Mon Jun 10 06:14:03 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* sysdeps/mach/hurd/dl-sysdep.c (__open): Define this instead of open.
(__close, __mmap): Likewise define with __ names now.
Mon Jun 10 05:13:18 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* elf/dl-support.c: New file.
* elf/Makefile (CFLAGS-dl-support.c): New variable.
(routines, elide-routines.so): Add dl-support.
* elf/dl-minimal.c (_dl_pagesize): Remove common defn.
* elf/dl-load.c (_dl_pagesize): Define it here.
(_dl_map_object_from_fd): Initialize it if zero.
* elf/link.h (_dl_pagesize): Remove const.
Sun Jun 9 04:04:26 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* elf/Makefile (routines): Add dl-symbol.
* elf/dl-lookup.c (_dl_symbol_value): Moved to ...
* elf/dl-symbol.c: New file.
* elf/elf.h (Elf32_Xword, Elf32_Sxword): New types.
(Elf32_Section, Elf64_Section): New types, 16 bits.
(Elf32_Sym, Elf64_Sym): Use it.
* elf/dl-deps.c (_dl_open): Moved to ...
* elf/dl-open.c: New file.
* Makefile (routines): Add dl-open.
* elf/Makefile (dl-routines): New variable.
(routines): Add $(dl-routines).
(elide-routines.so): New variable, set to $(dl-routines).
(libdl-inhibit-o): Variable removed; build all flavors of -ldl.
(rtld-routines): All but rtld, dl-sysdep, and dl-minimal moved to
$(dl-routines).
* elf/dl-lookup.c (_dl_lookup_symbol): Remove magic symbol grokage.
* elf/dladdr.c: Use ELFW(ST_BIND) in place of ELF32_ST_BIND.
* elf/dl-load.c (open_path): Use __ names for open and close. Avoid
using strdup.
(_dl_map_object): Likewise.
(_dl_map_object_from_fd): Use __ names for mmap, munmap, and mprotect.
* elf/dl-minimal.c (malloc): Likewise.
* elf/dl-reloc.c (_dl_relocate_object): Likewise.
* elf/dl-minimal.c (_dl_pagesize): New variable.
(malloc): Use that instead of a static variable.
* elf/dl-reloc.c (_dl_relocate_object): Use _dl_pagesize instead of
calling getpagesize.
* elf/dl-load.c (_dl_map_object_from_fd): Likewise.
* elf/link.h: Declare _dl_pagesize.
* elf/rtld.c (dl_r_debug): Renamed to _dl_r_debug.
* elf/link.h (struct link_map): Use Half for l_phnum instead of Word.
* elf/rtld.c (dl_main): Use Half for phdr count arg.
(_dl_sysdep_start): Update prototype of DL_MAIN function ptr arg.
* elf/dl-load.c (_dl_map_object_from_fd): Use explicit Elf32_Word to
extract 4-byte magic number, not ElfW(Word). Match EI_CLASS against
native wordsize, either 32 or 64.
* elf/elf.h (Elf64_Byte, Elf64_Section): Typedefs removed. In C a
char is always a byte, no need for a typedef. Section indices are
16-bit quantities in elf64, which already have a typedef Elf64_Half.
Remove partial -lelf implementation. There is now a
separately-distributed `libelf' package that implements it.
* elf/dl-lookup.c: Don't #include <libelf.h> any more.
(_dl_elf_hash): New function, moved from
libelf.h:elf_hash.
(_dl_lookup_symbol): Use it instead of elf_hash.
* elf/libelf.h: File removed.
* elf/elf_hash.c: File removed.
* elf/Makefile (headers): Remove libelf.h.
(extra-libs): Remove libelf.
(libelf-routines): Variable removed.
* elf/Makefile (libdl.so): Remove commands from this target. The
implicit rule commands are correct, this explicit rule just serves to
add some dependencies.
* elf/dl-lookup.c (_dl_lookup_symbol): Use ELFW(ST_TYPE) in place of
ELF32_ST_TYPE. Likewise ST_BIND.
* elf/do-rel.h (elf_dynamic_do_rel): Likewise R_SYM.
* elf/link.h (ElfW): New macro for wordsize-independent ElfXX_* type
naming.
(ELFW): New macro, likewise for ELFXX_* macro naming.
(_ElfW, _ElfW_1): New macros, subroutines of ElfW and ELF.
Sat Jun 8 20:52:38 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* elf/link.h, elf/do-rel.h, elf/dynamic-link.h, elf/dl-deps.c,
elf/dl-init.c, elf/dl-load.c, elf/dl-lookup.c, elf/dl-reloc.c,
elf/dl-runtime.c, elf/dladdr.c, elf/dlclose.c, elf/dlsym.c,
elf/linux-compat.c, elf/rtld.c: Change all uses of `Elf32_XXX' to
`ElfW(XXX)' for wordsize-independence.
Sat Jun 8 20:50:42 1996 Richard Henderson <rth@tamu.edu>
* elf/elf.h: Move Elf64_* types in parity with Elf32 counterparts.
(Elf64_auxv_t): New type.
(EM_ALPHA, R_ALPHA_*): New macros for elf64-alpha format.
1996-06-10 10:18:47 +00:00
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/* Load a shared object at runtime, relocate it, and run its initializer.
|
2024-01-01 18:12:26 +00:00
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|
|
Copyright (C) 1996-2024 Free Software Foundation, Inc.
|
update from main archive 961116
Sun Nov 17 03:13:57 1996 Ulrich Drepper <drepper@cygnus.com>
* db/makedb.c: Update and reformat copyright.
* elf/Makefile: Likewise.
* elf/dl-close.c: Likewise.
* elf/dl-debug.c: Likewise.
* elf/dl-deps.c: Likewise.
* elf/dl-error.c: Likewise.
* elf/dl-fini.c: Likewise.
* elf/dl-init.c: Likewise.
* elf/dl-load.c: Likewise.
* elf/dl-lookup.c: Likewise.
* elf/dl-minimal.c: Likewise.
* elf/dl-object.c: Likewise.
* elf/dl-open.c: Likewise.
* elf/dl-reloc.c: Likewise.
* elf/dl-runtime.c: Likewise.
* elf/dl-support.c: Likewise.
* elf/dl-symbol.c: Likewise.
* elf/dladdr.c: Likewise.
* elf/dlclose.c: Likewise.
* elf/dlerror.c: Likewise.
* elf/dlopen.c: Likewise.
* elf/dlsym.c: Likewise.
* elf/do-rel.h: Likewise.
* elf/dynamic-link.h: Likewise.
* elf/eval.c: Likewise.
* elf/rtld.c: Likewise.
* inet/ether_hton.c: Likewise.
* inet/ether_ntoh.c: Likewise.
* inet/ether_line.c: Likewise.
* inet/getnetgrent_r.c: Likewise.
* inet/Makefile (+gccwarn): Remove definition.
Instead set CFLAGS-rcmd.c, CFLAGS-rexec.c, and CFLAGS-ruserpass.c
to `-w'.
* inet/aliases.h: Add C++ protection.
* inet/ether_hton.c: Add prototype for __nss_ethers_lookup.
(ether_hostton): Remove unused variable result.
* inet/ether_ntoh.c: Likewise.
* inet/ether_line.c: Include <ctype.h> and <string.h>.
* inet/getnetgrent_r.c: Include <stdlib.h>.
Use casts to prevent warnings.
(innetgr): Initialize `known' and `needed'.
* inet/inet_net.c: Make local variable `i' of type u_int32_t.
* nss/getXXbyYY_r.c (INTERNAL (REENTRANT_NAME)) [NEED__RES]: Don't
return NULL. Instead set *RESULT to NULL and return -1.
* nss/getXXent_r.c (INTERNAL (REENTRANT_GETNAME)): Likewise.
(SETFUNC_NAME, ENDFUNC_NAME) [NEED__RES]: Don't return anything.
* nss/nss_files/files-alias.c: Debug function. I didn't worked at
all before.
Sat Nov 16 15:25:34 1996 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/posix/readv.c: Don't use PTR anymore.
* sysdeps/posix/writev.c: Likewise.
* version.h (VERSION): Bump to 1.98.
* nss/db-Makefile: Generate lines for getXXXent iteration.
* sysdeps/alpha/Dist: Don't distribute removed files divlu.S,
divqu.S, remlu.S, and remqu.S.
Fri Nov 15 08:55:54 1996 Andreas Jaeger <aj@arthur.pfalz.de>
* posix/unistd.h: Correct typo in documentation.
Thu Nov 14 18:08:14 1996 a sun <asun@zoology.washington.edu>
* inet/netinet/tcp.h: Use __ protected versions instead of
BYTE_ORDER, LITTLE_ENDIAN, and BIG_ENDIAN directly.
Sat Nov 16 13:44:55 1996 Ulrich Drepper <drepper@cygnus.com>
* intl/loadmsgcat.c (_nl_msg_cat_cntr): Initialize so that
references in libc.so are not anymore undefined.
Sat Nov 16 18:17:36 1996 NIIBE Yutaka <gniibe@mri.co.jp>
* io/utime.h: Rename second parameter for utime to prevent warning
for -Wshadow.
* dirent/dirent.h: Same here for scandir prototype.
* math/mathcalls.h: Likewise for frexp and ldexp.
* sysdeps/unix/sysv/linux/netinet/in.h: Likewise for bindresvport.
Sat Nov 16 03:49:27 1996 Ulrich Drepper <drepper@cygnus.com>
* stdlib/tst-strtod.c: Add test for error case below.
Sat Nov 16 03:48:39 1996 Wolfram Gloger <Wolfram.Gloger@dent.med.uni-muenchen.de>
* stdlib/strtod.c: Recognize numbers like 0e-19.
Fri Nov 15 08:38:43 1996 Andreas Jaeger <aj@arthur.pfalz.de>
* time/Makefile ($(installed-localtime-file)): Fix path to
rellns-sh.
* Makefile: Don't generate and install gnu/lib-names.h if
$(build-shared) is not `yes'.
Thu Nov 14 09:23:58 1996 H.J. Lu (hjl@gnu.ai.mit.edu)
* sysdeps/posix/Makefile ($(common-objpfx)mk-stdiolim): Depend
on $(..)posix/posix1_lim.h, not ../posix/posix1_lim.h.
* Makerules (REAL_MAKE_VERSION): New, use it instead of
MAKE_VERSION.
Thu Nov 14 22:10:43 1996 Ulrich Drepper <drepper@cygnus.com>
* nss/nss_files/files-XXX.x (_nss_files_get,ENTNAME_r): Fix typo.
* nss/getXXent_r.c: Fix typo. Set correct return value when
no further service is available.
Thu Nov 14 17:48:13 1996 Ulrich Drepper <drepper@cygnus.com>
* db/recno/rec_put.c: Add cast to avoid warning.
* db/recno/rec_close.c: Likewise.
* db/mpool/mpool.c: Likewise.
* db/hash/hash_bigkey.h: Likewise.
* db/hash/hash.c: Likewise.
* db/btree/bt_split.c: Likewise.
* db/btree/bt_put.c: Likewise.
Thu Nov 14 14:11:44 1996 Ulrich Drepper <drepper@cygnus.com>
* dirent/dirent.h: Update copyright.
* elf/elf.h: Likewise.
* elf/link.h: Likewise.
* gmon/sys/gmon_out.h: Likewise.
* gnu-versions.h: Likewise.
* intl/libintl.h: Likewise.
* io/fcntl.h: Likewise.
* io/ftw.h: Likewise.
* io/sys/statfs.h: Likewise.
* io/utime.h: Likewise.
* locale/langinfo.h: Likewise.
* malloc/malloc.h: Likewise.
* malloc/obstack.h: Likewise.
* misc/ar.h: Likewise.
* misc/error.h: Likewise.
* misc/mntent.h: Likewise.
* misc/sgtty.h: Likewise.
* misc/sys/cdefs.h: Likewise.
* misc/sys/dir.h: Likewise.
* misc/sys/file.h: Likewise.
* misc/sys/ioctl.h: Likewise.
* misc/sys/ustat.h: Likewise.
* posix/fnmatch.h: Likewise.
* posix/getopt.h: Likewise.
* posix/glob.h: Likewise.
* posix/posix2_lim.h: Likewise.
* posix/regex.h: Likewise.
* posix/sys/times.h: Likewise.
* posix/sys/types.h: Likewise.
* posix/sys/utsname.h: Likewise.
* posix/tar.h: Likewise.
* posix/wordexp.h: Likewise.
* resource/sys/resource.h: Likewise.
* resource/sys/vlimit.h: Likewise.
* resource/sys/vtimes.h: Likewise.
* socket/sys/socket.h: Likewise.
* socket/sys/un.h: Likewise.
* stdio-common/printf.h: Likewise.
* stdlib/alloca.h: Likewise.
* string/argz.h: Likewise.
* string/endian.h: Likewise.
* string/envz.h: Likewise.
* string/memory.h: Likewise.
* string/strings.h: Likewise.
* sysdeps/generic/crypt.h: Likewise.
* sysdeps/generic/direntry.h: Likewise.
* sysdeps/generic/gnu/types.h: Likewise.
* sysdeps/generic/ioctl-types.h: Likewise.
* sysdeps/generic/netinet/in.h: Likewise.
* sysdeps/generic/resourcebits.h: Likewise.
* sysdeps/generic/sigset.h: Likewise.
* sysdeps/generic/sockaddrcom.h: Likewise.
* sysdeps/generic/sys/mman.h: Likewise.
* sysdeps/generic/sys/ptrace.h: Likewise.
* sysdeps/generic/termbits.h: Likewise.
* sysdeps/generic/waitstatus.h: Likewise.
* sysdeps/ieee754/huge_val.h: Likewise.
* sysdeps/ieee754/nan.h: Likewise.
* sysdeps/mach/hurd/local_lim.h: Likewise.
* sysdeps/mach/hurd/statbuf.h: Likewise.
* sysdeps/stub/huge_val.h: Likewise.
* sysdeps/stub/libc-lock.h: Likewise.
* sysdeps/stub/signum.h: Likewise.
* sysdeps/stub/statbuf.h: Likewise.
* sysdeps/stub/waitflags.h: Likewise.
* sysdeps/unix/bsd/bsd4.4/sockaddrcom.h: Likewise.
* sysdeps/unix/bsd/osf/alpha/statbuf.h: Likewise.
* sysdeps/unix/bsd/osf/sys/mman.h: Likewise.
* sysdeps/unix/bsd/signum.h: Likewise.
* sysdeps/unix/bsd/statbuf.h: Likewise.
* sysdeps/unix/bsd/sun/signum.h: Likewise.
* sysdeps/unix/bsd/sun/sunos4/resourcebits.h: Likewise.
* sysdeps/unix/bsd/sun/sunos4/sys/mman.h: Likewise.
* sysdeps/unix/bsd/sun/sunos4/termbits.h: Likewise.
* sysdeps/unix/bsd/ultrix4/sys/mman.h: Likewise.
* sysdeps/unix/bsd/waitflags.h: Likewise.
* sysdeps/unix/sysv/irix4/signum.h: Likewise.
* sysdeps/unix/sysv/irix4/statbuf.h: Likewise.
* sysdeps/unix/sysv/irix4/sys/mman.h: Likewise.
* sysdeps/unix/sysv/linux/alpha/statbuf.h: Likewise.
* sysdeps/unix/sysv/linux/alpha/sys/io.h: Likewise.
* sysdeps/unix/sysv/linux/direntry.h: Likewise.
* sysdeps/unix/sysv/linux/gnu/types.h: Likewise.
* sysdeps/unix/sysv/linux/ioctl-types.h: Likewise.
* sysdeps/unix/sysv/linux/local_lim.h: Likewise.
* sysdeps/unix/sysv/linux/netinet/in.h: Likewise.
* sysdeps/unix/sysv/linux/resourcebits.h: Likewise.
* sysdeps/unix/sysv/linux/signum.h: Likewise.
* sysdeps/unix/sysv/linux/statbuf.h: Likewise.
* sysdeps/unix/sysv/linux/sys/io.h: Likewise.
* sysdeps/unix/sysv/linux/sys/klog.h: Likewise.
* sysdeps/unix/sysv/linux/sys/mman.h: Likewise.
* sysdeps/unix/sysv/linux/sys/ptrace.h: Likewise.
* sysdeps/unix/sysv/linux/syscall.h: Likewise.
* sysdeps/unix/sysv/linux/termbits.h: Likewise.
* sysdeps/unix/sysv/local_lim.h: Likewise.
* sysdeps/unix/sysv/sco3.2.4/syscall.h: Likewise.
* sysdeps/unix/sysv/sco3.2/local_lim.h: Likewise.
* sysdeps/unix/sysv/signum.h: Likewise.
* sysdeps/unix/sysv/sysv4/i386/statbuf.h: Likewise.
* sysdeps/unix/sysv/sysv4/signum.h: Likewise.
* sysdeps/unix/sysv/sysv4/sigset.h: Likewise.
* sysdeps/unix/sysv/sysv4/solaris2/signum.h: Likewise.
* sysdeps/unix/sysv/sysv4/solaris2/statbuf.h: Likewise.
* sysdeps/unix/sysv/sysv4/waitflags.h: Likewise.
* sysdeps/vax/huge_val.h: Likewise.
* values.h: Likewise.
Thu Nov 14 04:22:41 1996 Ulrich Drepper <drepper@cygnus.com>
* malloc/obstack.h: Use memcpy instead of bcopy and define a macro
`memcpy' using bcopy if memcpy is not available.
* manual/stdio.texi: Correct description of printf customization.
The argument info function is not optional anymore and the
interface for `printf_function' also changed.
* manual/examples/rprintf.c: Define and use argument info function.
* stdio-common/printf.h (struct printf_info): Change type for field
`pad' to wchar_t.
Correct comment for `register_printf_function'.
* nss/getXXbyYY.c [NEED_H_ERRNO]: Don't pass pointer to h_errno
to reentrant function. Instead use temporary variable and set
h_errno if an error occured.
Reported by NIIBE Yutaka.
are no bits set in the masks. Reported by baldazzi@csr.unibo.it.
1996-11-17 03:15:52 +00:00
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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2001-07-06 04:58:11 +00:00
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
|
update from main archive 961116
Sun Nov 17 03:13:57 1996 Ulrich Drepper <drepper@cygnus.com>
* db/makedb.c: Update and reformat copyright.
* elf/Makefile: Likewise.
* elf/dl-close.c: Likewise.
* elf/dl-debug.c: Likewise.
* elf/dl-deps.c: Likewise.
* elf/dl-error.c: Likewise.
* elf/dl-fini.c: Likewise.
* elf/dl-init.c: Likewise.
* elf/dl-load.c: Likewise.
* elf/dl-lookup.c: Likewise.
* elf/dl-minimal.c: Likewise.
* elf/dl-object.c: Likewise.
* elf/dl-open.c: Likewise.
* elf/dl-reloc.c: Likewise.
* elf/dl-runtime.c: Likewise.
* elf/dl-support.c: Likewise.
* elf/dl-symbol.c: Likewise.
* elf/dladdr.c: Likewise.
* elf/dlclose.c: Likewise.
* elf/dlerror.c: Likewise.
* elf/dlopen.c: Likewise.
* elf/dlsym.c: Likewise.
* elf/do-rel.h: Likewise.
* elf/dynamic-link.h: Likewise.
* elf/eval.c: Likewise.
* elf/rtld.c: Likewise.
* inet/ether_hton.c: Likewise.
* inet/ether_ntoh.c: Likewise.
* inet/ether_line.c: Likewise.
* inet/getnetgrent_r.c: Likewise.
* inet/Makefile (+gccwarn): Remove definition.
Instead set CFLAGS-rcmd.c, CFLAGS-rexec.c, and CFLAGS-ruserpass.c
to `-w'.
* inet/aliases.h: Add C++ protection.
* inet/ether_hton.c: Add prototype for __nss_ethers_lookup.
(ether_hostton): Remove unused variable result.
* inet/ether_ntoh.c: Likewise.
* inet/ether_line.c: Include <ctype.h> and <string.h>.
* inet/getnetgrent_r.c: Include <stdlib.h>.
Use casts to prevent warnings.
(innetgr): Initialize `known' and `needed'.
* inet/inet_net.c: Make local variable `i' of type u_int32_t.
* nss/getXXbyYY_r.c (INTERNAL (REENTRANT_NAME)) [NEED__RES]: Don't
return NULL. Instead set *RESULT to NULL and return -1.
* nss/getXXent_r.c (INTERNAL (REENTRANT_GETNAME)): Likewise.
(SETFUNC_NAME, ENDFUNC_NAME) [NEED__RES]: Don't return anything.
* nss/nss_files/files-alias.c: Debug function. I didn't worked at
all before.
Sat Nov 16 15:25:34 1996 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/posix/readv.c: Don't use PTR anymore.
* sysdeps/posix/writev.c: Likewise.
* version.h (VERSION): Bump to 1.98.
* nss/db-Makefile: Generate lines for getXXXent iteration.
* sysdeps/alpha/Dist: Don't distribute removed files divlu.S,
divqu.S, remlu.S, and remqu.S.
Fri Nov 15 08:55:54 1996 Andreas Jaeger <aj@arthur.pfalz.de>
* posix/unistd.h: Correct typo in documentation.
Thu Nov 14 18:08:14 1996 a sun <asun@zoology.washington.edu>
* inet/netinet/tcp.h: Use __ protected versions instead of
BYTE_ORDER, LITTLE_ENDIAN, and BIG_ENDIAN directly.
Sat Nov 16 13:44:55 1996 Ulrich Drepper <drepper@cygnus.com>
* intl/loadmsgcat.c (_nl_msg_cat_cntr): Initialize so that
references in libc.so are not anymore undefined.
Sat Nov 16 18:17:36 1996 NIIBE Yutaka <gniibe@mri.co.jp>
* io/utime.h: Rename second parameter for utime to prevent warning
for -Wshadow.
* dirent/dirent.h: Same here for scandir prototype.
* math/mathcalls.h: Likewise for frexp and ldexp.
* sysdeps/unix/sysv/linux/netinet/in.h: Likewise for bindresvport.
Sat Nov 16 03:49:27 1996 Ulrich Drepper <drepper@cygnus.com>
* stdlib/tst-strtod.c: Add test for error case below.
Sat Nov 16 03:48:39 1996 Wolfram Gloger <Wolfram.Gloger@dent.med.uni-muenchen.de>
* stdlib/strtod.c: Recognize numbers like 0e-19.
Fri Nov 15 08:38:43 1996 Andreas Jaeger <aj@arthur.pfalz.de>
* time/Makefile ($(installed-localtime-file)): Fix path to
rellns-sh.
* Makefile: Don't generate and install gnu/lib-names.h if
$(build-shared) is not `yes'.
Thu Nov 14 09:23:58 1996 H.J. Lu (hjl@gnu.ai.mit.edu)
* sysdeps/posix/Makefile ($(common-objpfx)mk-stdiolim): Depend
on $(..)posix/posix1_lim.h, not ../posix/posix1_lim.h.
* Makerules (REAL_MAKE_VERSION): New, use it instead of
MAKE_VERSION.
Thu Nov 14 22:10:43 1996 Ulrich Drepper <drepper@cygnus.com>
* nss/nss_files/files-XXX.x (_nss_files_get,ENTNAME_r): Fix typo.
* nss/getXXent_r.c: Fix typo. Set correct return value when
no further service is available.
Thu Nov 14 17:48:13 1996 Ulrich Drepper <drepper@cygnus.com>
* db/recno/rec_put.c: Add cast to avoid warning.
* db/recno/rec_close.c: Likewise.
* db/mpool/mpool.c: Likewise.
* db/hash/hash_bigkey.h: Likewise.
* db/hash/hash.c: Likewise.
* db/btree/bt_split.c: Likewise.
* db/btree/bt_put.c: Likewise.
Thu Nov 14 14:11:44 1996 Ulrich Drepper <drepper@cygnus.com>
* dirent/dirent.h: Update copyright.
* elf/elf.h: Likewise.
* elf/link.h: Likewise.
* gmon/sys/gmon_out.h: Likewise.
* gnu-versions.h: Likewise.
* intl/libintl.h: Likewise.
* io/fcntl.h: Likewise.
* io/ftw.h: Likewise.
* io/sys/statfs.h: Likewise.
* io/utime.h: Likewise.
* locale/langinfo.h: Likewise.
* malloc/malloc.h: Likewise.
* malloc/obstack.h: Likewise.
* misc/ar.h: Likewise.
* misc/error.h: Likewise.
* misc/mntent.h: Likewise.
* misc/sgtty.h: Likewise.
* misc/sys/cdefs.h: Likewise.
* misc/sys/dir.h: Likewise.
* misc/sys/file.h: Likewise.
* misc/sys/ioctl.h: Likewise.
* misc/sys/ustat.h: Likewise.
* posix/fnmatch.h: Likewise.
* posix/getopt.h: Likewise.
* posix/glob.h: Likewise.
* posix/posix2_lim.h: Likewise.
* posix/regex.h: Likewise.
* posix/sys/times.h: Likewise.
* posix/sys/types.h: Likewise.
* posix/sys/utsname.h: Likewise.
* posix/tar.h: Likewise.
* posix/wordexp.h: Likewise.
* resource/sys/resource.h: Likewise.
* resource/sys/vlimit.h: Likewise.
* resource/sys/vtimes.h: Likewise.
* socket/sys/socket.h: Likewise.
* socket/sys/un.h: Likewise.
* stdio-common/printf.h: Likewise.
* stdlib/alloca.h: Likewise.
* string/argz.h: Likewise.
* string/endian.h: Likewise.
* string/envz.h: Likewise.
* string/memory.h: Likewise.
* string/strings.h: Likewise.
* sysdeps/generic/crypt.h: Likewise.
* sysdeps/generic/direntry.h: Likewise.
* sysdeps/generic/gnu/types.h: Likewise.
* sysdeps/generic/ioctl-types.h: Likewise.
* sysdeps/generic/netinet/in.h: Likewise.
* sysdeps/generic/resourcebits.h: Likewise.
* sysdeps/generic/sigset.h: Likewise.
* sysdeps/generic/sockaddrcom.h: Likewise.
* sysdeps/generic/sys/mman.h: Likewise.
* sysdeps/generic/sys/ptrace.h: Likewise.
* sysdeps/generic/termbits.h: Likewise.
* sysdeps/generic/waitstatus.h: Likewise.
* sysdeps/ieee754/huge_val.h: Likewise.
* sysdeps/ieee754/nan.h: Likewise.
* sysdeps/mach/hurd/local_lim.h: Likewise.
* sysdeps/mach/hurd/statbuf.h: Likewise.
* sysdeps/stub/huge_val.h: Likewise.
* sysdeps/stub/libc-lock.h: Likewise.
* sysdeps/stub/signum.h: Likewise.
* sysdeps/stub/statbuf.h: Likewise.
* sysdeps/stub/waitflags.h: Likewise.
* sysdeps/unix/bsd/bsd4.4/sockaddrcom.h: Likewise.
* sysdeps/unix/bsd/osf/alpha/statbuf.h: Likewise.
* sysdeps/unix/bsd/osf/sys/mman.h: Likewise.
* sysdeps/unix/bsd/signum.h: Likewise.
* sysdeps/unix/bsd/statbuf.h: Likewise.
* sysdeps/unix/bsd/sun/signum.h: Likewise.
* sysdeps/unix/bsd/sun/sunos4/resourcebits.h: Likewise.
* sysdeps/unix/bsd/sun/sunos4/sys/mman.h: Likewise.
* sysdeps/unix/bsd/sun/sunos4/termbits.h: Likewise.
* sysdeps/unix/bsd/ultrix4/sys/mman.h: Likewise.
* sysdeps/unix/bsd/waitflags.h: Likewise.
* sysdeps/unix/sysv/irix4/signum.h: Likewise.
* sysdeps/unix/sysv/irix4/statbuf.h: Likewise.
* sysdeps/unix/sysv/irix4/sys/mman.h: Likewise.
* sysdeps/unix/sysv/linux/alpha/statbuf.h: Likewise.
* sysdeps/unix/sysv/linux/alpha/sys/io.h: Likewise.
* sysdeps/unix/sysv/linux/direntry.h: Likewise.
* sysdeps/unix/sysv/linux/gnu/types.h: Likewise.
* sysdeps/unix/sysv/linux/ioctl-types.h: Likewise.
* sysdeps/unix/sysv/linux/local_lim.h: Likewise.
* sysdeps/unix/sysv/linux/netinet/in.h: Likewise.
* sysdeps/unix/sysv/linux/resourcebits.h: Likewise.
* sysdeps/unix/sysv/linux/signum.h: Likewise.
* sysdeps/unix/sysv/linux/statbuf.h: Likewise.
* sysdeps/unix/sysv/linux/sys/io.h: Likewise.
* sysdeps/unix/sysv/linux/sys/klog.h: Likewise.
* sysdeps/unix/sysv/linux/sys/mman.h: Likewise.
* sysdeps/unix/sysv/linux/sys/ptrace.h: Likewise.
* sysdeps/unix/sysv/linux/syscall.h: Likewise.
* sysdeps/unix/sysv/linux/termbits.h: Likewise.
* sysdeps/unix/sysv/local_lim.h: Likewise.
* sysdeps/unix/sysv/sco3.2.4/syscall.h: Likewise.
* sysdeps/unix/sysv/sco3.2/local_lim.h: Likewise.
* sysdeps/unix/sysv/signum.h: Likewise.
* sysdeps/unix/sysv/sysv4/i386/statbuf.h: Likewise.
* sysdeps/unix/sysv/sysv4/signum.h: Likewise.
* sysdeps/unix/sysv/sysv4/sigset.h: Likewise.
* sysdeps/unix/sysv/sysv4/solaris2/signum.h: Likewise.
* sysdeps/unix/sysv/sysv4/solaris2/statbuf.h: Likewise.
* sysdeps/unix/sysv/sysv4/waitflags.h: Likewise.
* sysdeps/vax/huge_val.h: Likewise.
* values.h: Likewise.
Thu Nov 14 04:22:41 1996 Ulrich Drepper <drepper@cygnus.com>
* malloc/obstack.h: Use memcpy instead of bcopy and define a macro
`memcpy' using bcopy if memcpy is not available.
* manual/stdio.texi: Correct description of printf customization.
The argument info function is not optional anymore and the
interface for `printf_function' also changed.
* manual/examples/rprintf.c: Define and use argument info function.
* stdio-common/printf.h (struct printf_info): Change type for field
`pad' to wchar_t.
Correct comment for `register_printf_function'.
* nss/getXXbyYY.c [NEED_H_ERRNO]: Don't pass pointer to h_errno
to reentrant function. Instead use temporary variable and set
h_errno if an error occured.
Reported by NIIBE Yutaka.
are no bits set in the masks. Reported by baldazzi@csr.unibo.it.
1996-11-17 03:15:52 +00:00
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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2001-07-06 04:58:11 +00:00
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Lesser General Public License for more details.
|
update from main archive 961116
Sun Nov 17 03:13:57 1996 Ulrich Drepper <drepper@cygnus.com>
* db/makedb.c: Update and reformat copyright.
* elf/Makefile: Likewise.
* elf/dl-close.c: Likewise.
* elf/dl-debug.c: Likewise.
* elf/dl-deps.c: Likewise.
* elf/dl-error.c: Likewise.
* elf/dl-fini.c: Likewise.
* elf/dl-init.c: Likewise.
* elf/dl-load.c: Likewise.
* elf/dl-lookup.c: Likewise.
* elf/dl-minimal.c: Likewise.
* elf/dl-object.c: Likewise.
* elf/dl-open.c: Likewise.
* elf/dl-reloc.c: Likewise.
* elf/dl-runtime.c: Likewise.
* elf/dl-support.c: Likewise.
* elf/dl-symbol.c: Likewise.
* elf/dladdr.c: Likewise.
* elf/dlclose.c: Likewise.
* elf/dlerror.c: Likewise.
* elf/dlopen.c: Likewise.
* elf/dlsym.c: Likewise.
* elf/do-rel.h: Likewise.
* elf/dynamic-link.h: Likewise.
* elf/eval.c: Likewise.
* elf/rtld.c: Likewise.
* inet/ether_hton.c: Likewise.
* inet/ether_ntoh.c: Likewise.
* inet/ether_line.c: Likewise.
* inet/getnetgrent_r.c: Likewise.
* inet/Makefile (+gccwarn): Remove definition.
Instead set CFLAGS-rcmd.c, CFLAGS-rexec.c, and CFLAGS-ruserpass.c
to `-w'.
* inet/aliases.h: Add C++ protection.
* inet/ether_hton.c: Add prototype for __nss_ethers_lookup.
(ether_hostton): Remove unused variable result.
* inet/ether_ntoh.c: Likewise.
* inet/ether_line.c: Include <ctype.h> and <string.h>.
* inet/getnetgrent_r.c: Include <stdlib.h>.
Use casts to prevent warnings.
(innetgr): Initialize `known' and `needed'.
* inet/inet_net.c: Make local variable `i' of type u_int32_t.
* nss/getXXbyYY_r.c (INTERNAL (REENTRANT_NAME)) [NEED__RES]: Don't
return NULL. Instead set *RESULT to NULL and return -1.
* nss/getXXent_r.c (INTERNAL (REENTRANT_GETNAME)): Likewise.
(SETFUNC_NAME, ENDFUNC_NAME) [NEED__RES]: Don't return anything.
* nss/nss_files/files-alias.c: Debug function. I didn't worked at
all before.
Sat Nov 16 15:25:34 1996 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/posix/readv.c: Don't use PTR anymore.
* sysdeps/posix/writev.c: Likewise.
* version.h (VERSION): Bump to 1.98.
* nss/db-Makefile: Generate lines for getXXXent iteration.
* sysdeps/alpha/Dist: Don't distribute removed files divlu.S,
divqu.S, remlu.S, and remqu.S.
Fri Nov 15 08:55:54 1996 Andreas Jaeger <aj@arthur.pfalz.de>
* posix/unistd.h: Correct typo in documentation.
Thu Nov 14 18:08:14 1996 a sun <asun@zoology.washington.edu>
* inet/netinet/tcp.h: Use __ protected versions instead of
BYTE_ORDER, LITTLE_ENDIAN, and BIG_ENDIAN directly.
Sat Nov 16 13:44:55 1996 Ulrich Drepper <drepper@cygnus.com>
* intl/loadmsgcat.c (_nl_msg_cat_cntr): Initialize so that
references in libc.so are not anymore undefined.
Sat Nov 16 18:17:36 1996 NIIBE Yutaka <gniibe@mri.co.jp>
* io/utime.h: Rename second parameter for utime to prevent warning
for -Wshadow.
* dirent/dirent.h: Same here for scandir prototype.
* math/mathcalls.h: Likewise for frexp and ldexp.
* sysdeps/unix/sysv/linux/netinet/in.h: Likewise for bindresvport.
Sat Nov 16 03:49:27 1996 Ulrich Drepper <drepper@cygnus.com>
* stdlib/tst-strtod.c: Add test for error case below.
Sat Nov 16 03:48:39 1996 Wolfram Gloger <Wolfram.Gloger@dent.med.uni-muenchen.de>
* stdlib/strtod.c: Recognize numbers like 0e-19.
Fri Nov 15 08:38:43 1996 Andreas Jaeger <aj@arthur.pfalz.de>
* time/Makefile ($(installed-localtime-file)): Fix path to
rellns-sh.
* Makefile: Don't generate and install gnu/lib-names.h if
$(build-shared) is not `yes'.
Thu Nov 14 09:23:58 1996 H.J. Lu (hjl@gnu.ai.mit.edu)
* sysdeps/posix/Makefile ($(common-objpfx)mk-stdiolim): Depend
on $(..)posix/posix1_lim.h, not ../posix/posix1_lim.h.
* Makerules (REAL_MAKE_VERSION): New, use it instead of
MAKE_VERSION.
Thu Nov 14 22:10:43 1996 Ulrich Drepper <drepper@cygnus.com>
* nss/nss_files/files-XXX.x (_nss_files_get,ENTNAME_r): Fix typo.
* nss/getXXent_r.c: Fix typo. Set correct return value when
no further service is available.
Thu Nov 14 17:48:13 1996 Ulrich Drepper <drepper@cygnus.com>
* db/recno/rec_put.c: Add cast to avoid warning.
* db/recno/rec_close.c: Likewise.
* db/mpool/mpool.c: Likewise.
* db/hash/hash_bigkey.h: Likewise.
* db/hash/hash.c: Likewise.
* db/btree/bt_split.c: Likewise.
* db/btree/bt_put.c: Likewise.
Thu Nov 14 14:11:44 1996 Ulrich Drepper <drepper@cygnus.com>
* dirent/dirent.h: Update copyright.
* elf/elf.h: Likewise.
* elf/link.h: Likewise.
* gmon/sys/gmon_out.h: Likewise.
* gnu-versions.h: Likewise.
* intl/libintl.h: Likewise.
* io/fcntl.h: Likewise.
* io/ftw.h: Likewise.
* io/sys/statfs.h: Likewise.
* io/utime.h: Likewise.
* locale/langinfo.h: Likewise.
* malloc/malloc.h: Likewise.
* malloc/obstack.h: Likewise.
* misc/ar.h: Likewise.
* misc/error.h: Likewise.
* misc/mntent.h: Likewise.
* misc/sgtty.h: Likewise.
* misc/sys/cdefs.h: Likewise.
* misc/sys/dir.h: Likewise.
* misc/sys/file.h: Likewise.
* misc/sys/ioctl.h: Likewise.
* misc/sys/ustat.h: Likewise.
* posix/fnmatch.h: Likewise.
* posix/getopt.h: Likewise.
* posix/glob.h: Likewise.
* posix/posix2_lim.h: Likewise.
* posix/regex.h: Likewise.
* posix/sys/times.h: Likewise.
* posix/sys/types.h: Likewise.
* posix/sys/utsname.h: Likewise.
* posix/tar.h: Likewise.
* posix/wordexp.h: Likewise.
* resource/sys/resource.h: Likewise.
* resource/sys/vlimit.h: Likewise.
* resource/sys/vtimes.h: Likewise.
* socket/sys/socket.h: Likewise.
* socket/sys/un.h: Likewise.
* stdio-common/printf.h: Likewise.
* stdlib/alloca.h: Likewise.
* string/argz.h: Likewise.
* string/endian.h: Likewise.
* string/envz.h: Likewise.
* string/memory.h: Likewise.
* string/strings.h: Likewise.
* sysdeps/generic/crypt.h: Likewise.
* sysdeps/generic/direntry.h: Likewise.
* sysdeps/generic/gnu/types.h: Likewise.
* sysdeps/generic/ioctl-types.h: Likewise.
* sysdeps/generic/netinet/in.h: Likewise.
* sysdeps/generic/resourcebits.h: Likewise.
* sysdeps/generic/sigset.h: Likewise.
* sysdeps/generic/sockaddrcom.h: Likewise.
* sysdeps/generic/sys/mman.h: Likewise.
* sysdeps/generic/sys/ptrace.h: Likewise.
* sysdeps/generic/termbits.h: Likewise.
* sysdeps/generic/waitstatus.h: Likewise.
* sysdeps/ieee754/huge_val.h: Likewise.
* sysdeps/ieee754/nan.h: Likewise.
* sysdeps/mach/hurd/local_lim.h: Likewise.
* sysdeps/mach/hurd/statbuf.h: Likewise.
* sysdeps/stub/huge_val.h: Likewise.
* sysdeps/stub/libc-lock.h: Likewise.
* sysdeps/stub/signum.h: Likewise.
* sysdeps/stub/statbuf.h: Likewise.
* sysdeps/stub/waitflags.h: Likewise.
* sysdeps/unix/bsd/bsd4.4/sockaddrcom.h: Likewise.
* sysdeps/unix/bsd/osf/alpha/statbuf.h: Likewise.
* sysdeps/unix/bsd/osf/sys/mman.h: Likewise.
* sysdeps/unix/bsd/signum.h: Likewise.
* sysdeps/unix/bsd/statbuf.h: Likewise.
* sysdeps/unix/bsd/sun/signum.h: Likewise.
* sysdeps/unix/bsd/sun/sunos4/resourcebits.h: Likewise.
* sysdeps/unix/bsd/sun/sunos4/sys/mman.h: Likewise.
* sysdeps/unix/bsd/sun/sunos4/termbits.h: Likewise.
* sysdeps/unix/bsd/ultrix4/sys/mman.h: Likewise.
* sysdeps/unix/bsd/waitflags.h: Likewise.
* sysdeps/unix/sysv/irix4/signum.h: Likewise.
* sysdeps/unix/sysv/irix4/statbuf.h: Likewise.
* sysdeps/unix/sysv/irix4/sys/mman.h: Likewise.
* sysdeps/unix/sysv/linux/alpha/statbuf.h: Likewise.
* sysdeps/unix/sysv/linux/alpha/sys/io.h: Likewise.
* sysdeps/unix/sysv/linux/direntry.h: Likewise.
* sysdeps/unix/sysv/linux/gnu/types.h: Likewise.
* sysdeps/unix/sysv/linux/ioctl-types.h: Likewise.
* sysdeps/unix/sysv/linux/local_lim.h: Likewise.
* sysdeps/unix/sysv/linux/netinet/in.h: Likewise.
* sysdeps/unix/sysv/linux/resourcebits.h: Likewise.
* sysdeps/unix/sysv/linux/signum.h: Likewise.
* sysdeps/unix/sysv/linux/statbuf.h: Likewise.
* sysdeps/unix/sysv/linux/sys/io.h: Likewise.
* sysdeps/unix/sysv/linux/sys/klog.h: Likewise.
* sysdeps/unix/sysv/linux/sys/mman.h: Likewise.
* sysdeps/unix/sysv/linux/sys/ptrace.h: Likewise.
* sysdeps/unix/sysv/linux/syscall.h: Likewise.
* sysdeps/unix/sysv/linux/termbits.h: Likewise.
* sysdeps/unix/sysv/local_lim.h: Likewise.
* sysdeps/unix/sysv/sco3.2.4/syscall.h: Likewise.
* sysdeps/unix/sysv/sco3.2/local_lim.h: Likewise.
* sysdeps/unix/sysv/signum.h: Likewise.
* sysdeps/unix/sysv/sysv4/i386/statbuf.h: Likewise.
* sysdeps/unix/sysv/sysv4/signum.h: Likewise.
* sysdeps/unix/sysv/sysv4/sigset.h: Likewise.
* sysdeps/unix/sysv/sysv4/solaris2/signum.h: Likewise.
* sysdeps/unix/sysv/sysv4/solaris2/statbuf.h: Likewise.
* sysdeps/unix/sysv/sysv4/waitflags.h: Likewise.
* sysdeps/vax/huge_val.h: Likewise.
* values.h: Likewise.
Thu Nov 14 04:22:41 1996 Ulrich Drepper <drepper@cygnus.com>
* malloc/obstack.h: Use memcpy instead of bcopy and define a macro
`memcpy' using bcopy if memcpy is not available.
* manual/stdio.texi: Correct description of printf customization.
The argument info function is not optional anymore and the
interface for `printf_function' also changed.
* manual/examples/rprintf.c: Define and use argument info function.
* stdio-common/printf.h (struct printf_info): Change type for field
`pad' to wchar_t.
Correct comment for `register_printf_function'.
* nss/getXXbyYY.c [NEED_H_ERRNO]: Don't pass pointer to h_errno
to reentrant function. Instead use temporary variable and set
h_errno if an error occured.
Reported by NIIBE Yutaka.
are no bits set in the masks. Reported by baldazzi@csr.unibo.it.
1996-11-17 03:15:52 +00:00
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2001-07-06 04:58:11 +00:00
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You should have received a copy of the GNU Lesser General Public
|
2012-02-09 23:18:22 +00:00
|
|
|
License along with the GNU C Library; if not, see
|
Prefer https to http for gnu.org and fsf.org URLs
Also, change sources.redhat.com to sourceware.org.
This patch was automatically generated by running the following shell
script, which uses GNU sed, and which avoids modifying files imported
from upstream:
sed -ri '
s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g
s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g
' \
$(find $(git ls-files) -prune -type f \
! -name '*.po' \
! -name 'ChangeLog*' \
! -path COPYING ! -path COPYING.LIB \
! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \
! -path manual/texinfo.tex ! -path scripts/config.guess \
! -path scripts/config.sub ! -path scripts/install-sh \
! -path scripts/mkinstalldirs ! -path scripts/move-if-change \
! -path INSTALL ! -path locale/programs/charmap-kw.h \
! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \
! '(' -name configure \
-execdir test -f configure.ac -o -f configure.in ';' ')' \
! '(' -name preconfigure \
-execdir test -f preconfigure.ac ';' ')' \
-print)
and then by running 'make dist-prepare' to regenerate files built
from the altered files, and then executing the following to cleanup:
chmod a+x sysdeps/unix/sysv/linux/riscv/configure
# Omit irrelevant whitespace and comment-only changes,
# perhaps from a slightly-different Autoconf version.
git checkout -f \
sysdeps/csky/configure \
sysdeps/hppa/configure \
sysdeps/riscv/configure \
sysdeps/unix/sysv/linux/csky/configure
# Omit changes that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines
git checkout -f \
sysdeps/powerpc/powerpc64/ppc-mcount.S \
sysdeps/unix/sysv/linux/s390/s390-64/syscall.S
# Omit change that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline
git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
2019-09-07 05:40:42 +00:00
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<https://www.gnu.org/licenses/>. */
|
Mon Jun 10 06:14:03 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* sysdeps/mach/hurd/dl-sysdep.c (__open): Define this instead of open.
(__close, __mmap): Likewise define with __ names now.
Mon Jun 10 05:13:18 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* elf/dl-support.c: New file.
* elf/Makefile (CFLAGS-dl-support.c): New variable.
(routines, elide-routines.so): Add dl-support.
* elf/dl-minimal.c (_dl_pagesize): Remove common defn.
* elf/dl-load.c (_dl_pagesize): Define it here.
(_dl_map_object_from_fd): Initialize it if zero.
* elf/link.h (_dl_pagesize): Remove const.
Sun Jun 9 04:04:26 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* elf/Makefile (routines): Add dl-symbol.
* elf/dl-lookup.c (_dl_symbol_value): Moved to ...
* elf/dl-symbol.c: New file.
* elf/elf.h (Elf32_Xword, Elf32_Sxword): New types.
(Elf32_Section, Elf64_Section): New types, 16 bits.
(Elf32_Sym, Elf64_Sym): Use it.
* elf/dl-deps.c (_dl_open): Moved to ...
* elf/dl-open.c: New file.
* Makefile (routines): Add dl-open.
* elf/Makefile (dl-routines): New variable.
(routines): Add $(dl-routines).
(elide-routines.so): New variable, set to $(dl-routines).
(libdl-inhibit-o): Variable removed; build all flavors of -ldl.
(rtld-routines): All but rtld, dl-sysdep, and dl-minimal moved to
$(dl-routines).
* elf/dl-lookup.c (_dl_lookup_symbol): Remove magic symbol grokage.
* elf/dladdr.c: Use ELFW(ST_BIND) in place of ELF32_ST_BIND.
* elf/dl-load.c (open_path): Use __ names for open and close. Avoid
using strdup.
(_dl_map_object): Likewise.
(_dl_map_object_from_fd): Use __ names for mmap, munmap, and mprotect.
* elf/dl-minimal.c (malloc): Likewise.
* elf/dl-reloc.c (_dl_relocate_object): Likewise.
* elf/dl-minimal.c (_dl_pagesize): New variable.
(malloc): Use that instead of a static variable.
* elf/dl-reloc.c (_dl_relocate_object): Use _dl_pagesize instead of
calling getpagesize.
* elf/dl-load.c (_dl_map_object_from_fd): Likewise.
* elf/link.h: Declare _dl_pagesize.
* elf/rtld.c (dl_r_debug): Renamed to _dl_r_debug.
* elf/link.h (struct link_map): Use Half for l_phnum instead of Word.
* elf/rtld.c (dl_main): Use Half for phdr count arg.
(_dl_sysdep_start): Update prototype of DL_MAIN function ptr arg.
* elf/dl-load.c (_dl_map_object_from_fd): Use explicit Elf32_Word to
extract 4-byte magic number, not ElfW(Word). Match EI_CLASS against
native wordsize, either 32 or 64.
* elf/elf.h (Elf64_Byte, Elf64_Section): Typedefs removed. In C a
char is always a byte, no need for a typedef. Section indices are
16-bit quantities in elf64, which already have a typedef Elf64_Half.
Remove partial -lelf implementation. There is now a
separately-distributed `libelf' package that implements it.
* elf/dl-lookup.c: Don't #include <libelf.h> any more.
(_dl_elf_hash): New function, moved from
libelf.h:elf_hash.
(_dl_lookup_symbol): Use it instead of elf_hash.
* elf/libelf.h: File removed.
* elf/elf_hash.c: File removed.
* elf/Makefile (headers): Remove libelf.h.
(extra-libs): Remove libelf.
(libelf-routines): Variable removed.
* elf/Makefile (libdl.so): Remove commands from this target. The
implicit rule commands are correct, this explicit rule just serves to
add some dependencies.
* elf/dl-lookup.c (_dl_lookup_symbol): Use ELFW(ST_TYPE) in place of
ELF32_ST_TYPE. Likewise ST_BIND.
* elf/do-rel.h (elf_dynamic_do_rel): Likewise R_SYM.
* elf/link.h (ElfW): New macro for wordsize-independent ElfXX_* type
naming.
(ELFW): New macro, likewise for ELFXX_* macro naming.
(_ElfW, _ElfW_1): New macros, subroutines of ElfW and ELF.
Sat Jun 8 20:52:38 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* elf/link.h, elf/do-rel.h, elf/dynamic-link.h, elf/dl-deps.c,
elf/dl-init.c, elf/dl-load.c, elf/dl-lookup.c, elf/dl-reloc.c,
elf/dl-runtime.c, elf/dladdr.c, elf/dlclose.c, elf/dlsym.c,
elf/linux-compat.c, elf/rtld.c: Change all uses of `Elf32_XXX' to
`ElfW(XXX)' for wordsize-independence.
Sat Jun 8 20:50:42 1996 Richard Henderson <rth@tamu.edu>
* elf/elf.h: Move Elf64_* types in parity with Elf32 counterparts.
(Elf64_auxv_t): New type.
(EM_ALPHA, R_ALPHA_*): New macros for elf64-alpha format.
1996-06-10 10:18:47 +00:00
|
|
|
|
1999-05-05 23:29:18 +00:00
|
|
|
#include <assert.h>
|
Mon Jun 10 06:14:03 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* sysdeps/mach/hurd/dl-sysdep.c (__open): Define this instead of open.
(__close, __mmap): Likewise define with __ names now.
Mon Jun 10 05:13:18 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* elf/dl-support.c: New file.
* elf/Makefile (CFLAGS-dl-support.c): New variable.
(routines, elide-routines.so): Add dl-support.
* elf/dl-minimal.c (_dl_pagesize): Remove common defn.
* elf/dl-load.c (_dl_pagesize): Define it here.
(_dl_map_object_from_fd): Initialize it if zero.
* elf/link.h (_dl_pagesize): Remove const.
Sun Jun 9 04:04:26 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* elf/Makefile (routines): Add dl-symbol.
* elf/dl-lookup.c (_dl_symbol_value): Moved to ...
* elf/dl-symbol.c: New file.
* elf/elf.h (Elf32_Xword, Elf32_Sxword): New types.
(Elf32_Section, Elf64_Section): New types, 16 bits.
(Elf32_Sym, Elf64_Sym): Use it.
* elf/dl-deps.c (_dl_open): Moved to ...
* elf/dl-open.c: New file.
* Makefile (routines): Add dl-open.
* elf/Makefile (dl-routines): New variable.
(routines): Add $(dl-routines).
(elide-routines.so): New variable, set to $(dl-routines).
(libdl-inhibit-o): Variable removed; build all flavors of -ldl.
(rtld-routines): All but rtld, dl-sysdep, and dl-minimal moved to
$(dl-routines).
* elf/dl-lookup.c (_dl_lookup_symbol): Remove magic symbol grokage.
* elf/dladdr.c: Use ELFW(ST_BIND) in place of ELF32_ST_BIND.
* elf/dl-load.c (open_path): Use __ names for open and close. Avoid
using strdup.
(_dl_map_object): Likewise.
(_dl_map_object_from_fd): Use __ names for mmap, munmap, and mprotect.
* elf/dl-minimal.c (malloc): Likewise.
* elf/dl-reloc.c (_dl_relocate_object): Likewise.
* elf/dl-minimal.c (_dl_pagesize): New variable.
(malloc): Use that instead of a static variable.
* elf/dl-reloc.c (_dl_relocate_object): Use _dl_pagesize instead of
calling getpagesize.
* elf/dl-load.c (_dl_map_object_from_fd): Likewise.
* elf/link.h: Declare _dl_pagesize.
* elf/rtld.c (dl_r_debug): Renamed to _dl_r_debug.
* elf/link.h (struct link_map): Use Half for l_phnum instead of Word.
* elf/rtld.c (dl_main): Use Half for phdr count arg.
(_dl_sysdep_start): Update prototype of DL_MAIN function ptr arg.
* elf/dl-load.c (_dl_map_object_from_fd): Use explicit Elf32_Word to
extract 4-byte magic number, not ElfW(Word). Match EI_CLASS against
native wordsize, either 32 or 64.
* elf/elf.h (Elf64_Byte, Elf64_Section): Typedefs removed. In C a
char is always a byte, no need for a typedef. Section indices are
16-bit quantities in elf64, which already have a typedef Elf64_Half.
Remove partial -lelf implementation. There is now a
separately-distributed `libelf' package that implements it.
* elf/dl-lookup.c: Don't #include <libelf.h> any more.
(_dl_elf_hash): New function, moved from
libelf.h:elf_hash.
(_dl_lookup_symbol): Use it instead of elf_hash.
* elf/libelf.h: File removed.
* elf/elf_hash.c: File removed.
* elf/Makefile (headers): Remove libelf.h.
(extra-libs): Remove libelf.
(libelf-routines): Variable removed.
* elf/Makefile (libdl.so): Remove commands from this target. The
implicit rule commands are correct, this explicit rule just serves to
add some dependencies.
* elf/dl-lookup.c (_dl_lookup_symbol): Use ELFW(ST_TYPE) in place of
ELF32_ST_TYPE. Likewise ST_BIND.
* elf/do-rel.h (elf_dynamic_do_rel): Likewise R_SYM.
* elf/link.h (ElfW): New macro for wordsize-independent ElfXX_* type
naming.
(ELFW): New macro, likewise for ELFXX_* macro naming.
(_ElfW, _ElfW_1): New macros, subroutines of ElfW and ELF.
Sat Jun 8 20:52:38 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* elf/link.h, elf/do-rel.h, elf/dynamic-link.h, elf/dl-deps.c,
elf/dl-init.c, elf/dl-load.c, elf/dl-lookup.c, elf/dl-reloc.c,
elf/dl-runtime.c, elf/dladdr.c, elf/dlclose.c, elf/dlsym.c,
elf/linux-compat.c, elf/rtld.c: Change all uses of `Elf32_XXX' to
`ElfW(XXX)' for wordsize-independence.
Sat Jun 8 20:50:42 1996 Richard Henderson <rth@tamu.edu>
* elf/elf.h: Move Elf64_* types in parity with Elf32 counterparts.
(Elf64_auxv_t): New type.
(EM_ALPHA, R_ALPHA_*): New macros for elf64-alpha format.
1996-06-10 10:18:47 +00:00
|
|
|
#include <dlfcn.h>
|
1996-06-10 20:19:39 +00:00
|
|
|
#include <errno.h>
|
1999-07-23 22:58:50 +00:00
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#include <libintl.h>
|
2002-02-16 00:21:33 +00:00
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#include <stdio.h>
|
1998-03-24 00:39:45 +00:00
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#include <stdlib.h>
|
1998-07-13 12:29:13 +00:00
|
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#include <string.h>
|
1999-07-23 22:58:50 +00:00
|
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|
#include <unistd.h>
|
1998-08-26 00:07:26 +00:00
|
|
|
#include <sys/mman.h> /* Check whether MAP_COPY is defined. */
|
1999-05-05 23:29:18 +00:00
|
|
|
#include <sys/param.h>
|
2015-09-08 21:11:03 +00:00
|
|
|
#include <libc-lock.h>
|
2000-03-23 20:31:46 +00:00
|
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|
#include <ldsodefs.h>
|
2006-10-18 19:26:30 +00:00
|
|
|
#include <sysdep-cancel.h>
|
2007-05-19 07:08:23 +00:00
|
|
|
#include <tls.h>
|
2012-07-26 10:03:35 +00:00
|
|
|
#include <stap-probe.h>
|
2012-08-14 23:04:29 +00:00
|
|
|
#include <atomic.h>
|
2017-08-21 12:32:21 +00:00
|
|
|
#include <libc-internal.h>
|
2019-11-27 15:37:17 +00:00
|
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#include <array_length.h>
|
elf: Implement __libc_early_init
This function is defined in libc.so, and the dynamic loader calls
right after relocation has been finished, before any ELF constructors
or the preinit function is invoked. It is also used in the static
build for initializing parts of the static libc.
To locate __libc_early_init, a direct symbol lookup function is used,
_dl_lookup_direct. It does not search the entire symbol scope and
consults merely a single link map. This function could also be used
to implement lookups in the vDSO (as an optimization).
A per-namespace variable (libc_map) is added for locating libc.so,
to avoid repeated traversals of the search scope. It is similar to
GL(dl_initfirst). An alternative would have been to thread a context
argument from _dl_open down to _dl_map_object_from_fd (where libc.so
is identified). This could have avoided the global variable, but
the change would be larger as a result. It would not have been
possible to use this to replace GL(dl_initfirst) because that global
variable is used to pass the function pointer past the stack switch
from dl_main to the main program. Replacing that requires adding
a new argument to _dl_init, which in turn needs changes to the
architecture-specific libc.so startup code written in assembler.
__libc_early_init should not be used to replace _dl_var_init (as
it exists today on some architectures). Instead, _dl_lookup_direct
should be used to look up a new variable symbol in libc.so, and
that should then be initialized from the dynamic loader, immediately
after the object has been loaded in _dl_map_object_from_fd (before
relocation is run). This way, more IFUNC resolvers which depend on
these variables will work.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
2020-04-24 20:31:15 +00:00
|
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#include <libc-early-init.h>
|
2021-05-17 07:59:14 +00:00
|
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#include <gnu/lib-names.h>
|
2021-12-28 21:52:56 +00:00
|
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#include <dl-find_object.h>
|
1996-06-10 20:19:39 +00:00
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1999-05-05 23:29:18 +00:00
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#include <dl-dst.h>
|
x86: Support IBT and SHSTK in Intel CET [BZ #21598]
Intel Control-flow Enforcement Technology (CET) instructions:
https://software.intel.com/sites/default/files/managed/4d/2a/control-flow-en
forcement-technology-preview.pdf
includes Indirect Branch Tracking (IBT) and Shadow Stack (SHSTK).
GNU_PROPERTY_X86_FEATURE_1_IBT is added to GNU program property to
indicate that all executable sections are compatible with IBT when
ENDBR instruction starts each valid target where an indirect branch
instruction can land. Linker sets GNU_PROPERTY_X86_FEATURE_1_IBT on
output only if it is set on all relocatable inputs.
On an IBT capable processor, the following steps should be taken:
1. When loading an executable without an interpreter, enable IBT and
lock IBT if GNU_PROPERTY_X86_FEATURE_1_IBT is set on the executable.
2. When loading an executable with an interpreter, enable IBT if
GNU_PROPERTY_X86_FEATURE_1_IBT is set on the interpreter.
a. If GNU_PROPERTY_X86_FEATURE_1_IBT isn't set on the executable,
disable IBT.
b. Lock IBT.
3. If IBT is enabled, when loading a shared object without
GNU_PROPERTY_X86_FEATURE_1_IBT:
a. If legacy interwork is allowed, then mark all pages in executable
PT_LOAD segments in legacy code page bitmap. Failure of legacy code
page bitmap allocation causes an error.
b. If legacy interwork isn't allowed, it causes an error.
GNU_PROPERTY_X86_FEATURE_1_SHSTK is added to GNU program property to
indicate that all executable sections are compatible with SHSTK where
return address popped from shadow stack always matches return address
popped from normal stack. Linker sets GNU_PROPERTY_X86_FEATURE_1_SHSTK
on output only if it is set on all relocatable inputs.
On a SHSTK capable processor, the following steps should be taken:
1. When loading an executable without an interpreter, enable SHSTK if
GNU_PROPERTY_X86_FEATURE_1_SHSTK is set on the executable.
2. When loading an executable with an interpreter, enable SHSTK if
GNU_PROPERTY_X86_FEATURE_1_SHSTK is set on interpreter.
a. If GNU_PROPERTY_X86_FEATURE_1_SHSTK isn't set on the executable
or any shared objects loaded via the DT_NEEDED tag, disable SHSTK.
b. Otherwise lock SHSTK.
3. After SHSTK is enabled, it is an error to load a shared object
without GNU_PROPERTY_X86_FEATURE_1_SHSTK.
To enable CET support in glibc, --enable-cet is required to configure
glibc. When CET is enabled, both compiler and assembler must support
CET. Otherwise, it is a configure-time error.
To support CET run-time control,
1. _dl_x86_feature_1 is added to the writable ld.so namespace to indicate
if IBT or SHSTK are enabled at run-time. It should be initialized by
init_cpu_features.
2. For dynamic executables:
a. A l_cet field is added to struct link_map to indicate if IBT or
SHSTK is enabled in an ELF module. _dl_process_pt_note or
_rtld_process_pt_note is called to process PT_NOTE segment for
GNU program property and set l_cet.
b. _dl_open_check is added to check IBT and SHSTK compatibilty when
dlopening a shared object.
3. Replace i386 _dl_runtime_resolve and _dl_runtime_profile with
_dl_runtime_resolve_shstk and _dl_runtime_profile_shstk, respectively if
SHSTK is enabled.
CET run-time control can be changed via GLIBC_TUNABLES with
$ export GLIBC_TUNABLES=glibc.tune.x86_shstk=[permissive|on|off]
$ export GLIBC_TUNABLES=glibc.tune.x86_ibt=[permissive|on|off]
1. permissive: SHSTK is disabled when dlopening a legacy ELF module.
2. on: IBT or SHSTK are always enabled, regardless if there are IBT or
SHSTK bits in GNU program property.
3. off: IBT or SHSTK are always disabled, regardless if there are IBT or
SHSTK bits in GNU program property.
<cet.h> from CET-enabled GCC is automatically included by assembly codes
to add GNU_PROPERTY_X86_FEATURE_1_IBT and GNU_PROPERTY_X86_FEATURE_1_SHSTK
to GNU program property. _CET_ENDBR is added at the entrance of all
assembly functions whose address may be taken. _CET_NOTRACK is used to
insert NOTRACK prefix with indirect jump table to support IBT. It is
defined as notrack when _CET_NOTRACK is defined in <cet.h>.
[BZ #21598]
* configure.ac: Add --enable-cet.
* configure: Regenerated.
* elf/Makefille (all-built-dso): Add a comment.
* elf/dl-load.c (filebuf): Moved before "dynamic-link.h".
Include <dl-prop.h>.
(_dl_map_object_from_fd): Call _dl_process_pt_note on PT_NOTE
segment.
* elf/dl-open.c: Include <dl-prop.h>.
(dl_open_worker): Call _dl_open_check.
* elf/rtld.c: Include <dl-prop.h>.
(dl_main): Call _rtld_process_pt_note on PT_NOTE segment. Call
_rtld_main_check.
* sysdeps/generic/dl-prop.h: New file.
* sysdeps/i386/dl-cet.c: Likewise.
* sysdeps/unix/sysv/linux/x86/cpu-features.c: Likewise.
* sysdeps/unix/sysv/linux/x86/dl-cet.h: Likewise.
* sysdeps/x86/cet-tunables.h: Likewise.
* sysdeps/x86/check-cet.awk: Likewise.
* sysdeps/x86/configure: Likewise.
* sysdeps/x86/configure.ac: Likewise.
* sysdeps/x86/dl-cet.c: Likewise.
* sysdeps/x86/dl-procruntime.c: Likewise.
* sysdeps/x86/dl-prop.h: Likewise.
* sysdeps/x86/libc-start.h: Likewise.
* sysdeps/x86/link_map.h: Likewise.
* sysdeps/i386/dl-trampoline.S (_dl_runtime_resolve): Add
_CET_ENDBR.
(_dl_runtime_profile): Likewise.
(_dl_runtime_resolve_shstk): New.
(_dl_runtime_profile_shstk): Likewise.
* sysdeps/linux/x86/Makefile (sysdep-dl-routines): Add dl-cet
if CET is enabled.
(CFLAGS-.o): Add -fcf-protection if CET is enabled.
(CFLAGS-.os): Likewise.
(CFLAGS-.op): Likewise.
(CFLAGS-.oS): Likewise.
(asm-CPPFLAGS): Add -fcf-protection -include cet.h if CET
is enabled.
(tests-special): Add $(objpfx)check-cet.out.
(cet-built-dso): New.
(+$(cet-built-dso:=.note)): Likewise.
(common-generated): Add $(cet-built-dso:$(common-objpfx)%=%.note).
($(objpfx)check-cet.out): New.
(generated): Add check-cet.out.
* sysdeps/x86/cpu-features.c: Include <dl-cet.h> and
<cet-tunables.h>.
(TUNABLE_CALLBACK (set_x86_ibt)): New prototype.
(TUNABLE_CALLBACK (set_x86_shstk)): Likewise.
(init_cpu_features): Call get_cet_status to check CET status
and update dl_x86_feature_1 with CET status. Call
TUNABLE_CALLBACK (set_x86_ibt) and TUNABLE_CALLBACK
(set_x86_shstk). Disable and lock CET in libc.a.
* sysdeps/x86/cpu-tunables.c: Include <cet-tunables.h>.
(TUNABLE_CALLBACK (set_x86_ibt)): New function.
(TUNABLE_CALLBACK (set_x86_shstk)): Likewise.
* sysdeps/x86/sysdep.h (_CET_NOTRACK): New.
(_CET_ENDBR): Define if not defined.
(ENTRY): Add _CET_ENDBR.
* sysdeps/x86/dl-tunables.list (glibc.tune): Add x86_ibt and
x86_shstk.
* sysdeps/x86_64/dl-trampoline.h (_dl_runtime_resolve): Add
_CET_ENDBR.
(_dl_runtime_profile): Likewise.
2018-07-16 21:08:15 +00:00
|
|
|
#include <dl-prop.h>
|
1999-05-05 23:29:18 +00:00
|
|
|
|
1996-08-19 01:07:44 +00:00
|
|
|
|
2012-07-17 22:25:50 +00:00
|
|
|
/* We must be careful not to leave us in an inconsistent state. Thus we
|
1998-07-13 12:29:13 +00:00
|
|
|
catch any error and re-raise it after cleaning up. */
|
|
|
|
|
|
|
|
struct dl_open_args
|
Mon Jun 10 06:14:03 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* sysdeps/mach/hurd/dl-sysdep.c (__open): Define this instead of open.
(__close, __mmap): Likewise define with __ names now.
Mon Jun 10 05:13:18 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* elf/dl-support.c: New file.
* elf/Makefile (CFLAGS-dl-support.c): New variable.
(routines, elide-routines.so): Add dl-support.
* elf/dl-minimal.c (_dl_pagesize): Remove common defn.
* elf/dl-load.c (_dl_pagesize): Define it here.
(_dl_map_object_from_fd): Initialize it if zero.
* elf/link.h (_dl_pagesize): Remove const.
Sun Jun 9 04:04:26 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* elf/Makefile (routines): Add dl-symbol.
* elf/dl-lookup.c (_dl_symbol_value): Moved to ...
* elf/dl-symbol.c: New file.
* elf/elf.h (Elf32_Xword, Elf32_Sxword): New types.
(Elf32_Section, Elf64_Section): New types, 16 bits.
(Elf32_Sym, Elf64_Sym): Use it.
* elf/dl-deps.c (_dl_open): Moved to ...
* elf/dl-open.c: New file.
* Makefile (routines): Add dl-open.
* elf/Makefile (dl-routines): New variable.
(routines): Add $(dl-routines).
(elide-routines.so): New variable, set to $(dl-routines).
(libdl-inhibit-o): Variable removed; build all flavors of -ldl.
(rtld-routines): All but rtld, dl-sysdep, and dl-minimal moved to
$(dl-routines).
* elf/dl-lookup.c (_dl_lookup_symbol): Remove magic symbol grokage.
* elf/dladdr.c: Use ELFW(ST_BIND) in place of ELF32_ST_BIND.
* elf/dl-load.c (open_path): Use __ names for open and close. Avoid
using strdup.
(_dl_map_object): Likewise.
(_dl_map_object_from_fd): Use __ names for mmap, munmap, and mprotect.
* elf/dl-minimal.c (malloc): Likewise.
* elf/dl-reloc.c (_dl_relocate_object): Likewise.
* elf/dl-minimal.c (_dl_pagesize): New variable.
(malloc): Use that instead of a static variable.
* elf/dl-reloc.c (_dl_relocate_object): Use _dl_pagesize instead of
calling getpagesize.
* elf/dl-load.c (_dl_map_object_from_fd): Likewise.
* elf/link.h: Declare _dl_pagesize.
* elf/rtld.c (dl_r_debug): Renamed to _dl_r_debug.
* elf/link.h (struct link_map): Use Half for l_phnum instead of Word.
* elf/rtld.c (dl_main): Use Half for phdr count arg.
(_dl_sysdep_start): Update prototype of DL_MAIN function ptr arg.
* elf/dl-load.c (_dl_map_object_from_fd): Use explicit Elf32_Word to
extract 4-byte magic number, not ElfW(Word). Match EI_CLASS against
native wordsize, either 32 or 64.
* elf/elf.h (Elf64_Byte, Elf64_Section): Typedefs removed. In C a
char is always a byte, no need for a typedef. Section indices are
16-bit quantities in elf64, which already have a typedef Elf64_Half.
Remove partial -lelf implementation. There is now a
separately-distributed `libelf' package that implements it.
* elf/dl-lookup.c: Don't #include <libelf.h> any more.
(_dl_elf_hash): New function, moved from
libelf.h:elf_hash.
(_dl_lookup_symbol): Use it instead of elf_hash.
* elf/libelf.h: File removed.
* elf/elf_hash.c: File removed.
* elf/Makefile (headers): Remove libelf.h.
(extra-libs): Remove libelf.
(libelf-routines): Variable removed.
* elf/Makefile (libdl.so): Remove commands from this target. The
implicit rule commands are correct, this explicit rule just serves to
add some dependencies.
* elf/dl-lookup.c (_dl_lookup_symbol): Use ELFW(ST_TYPE) in place of
ELF32_ST_TYPE. Likewise ST_BIND.
* elf/do-rel.h (elf_dynamic_do_rel): Likewise R_SYM.
* elf/link.h (ElfW): New macro for wordsize-independent ElfXX_* type
naming.
(ELFW): New macro, likewise for ELFXX_* macro naming.
(_ElfW, _ElfW_1): New macros, subroutines of ElfW and ELF.
Sat Jun 8 20:52:38 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* elf/link.h, elf/do-rel.h, elf/dynamic-link.h, elf/dl-deps.c,
elf/dl-init.c, elf/dl-load.c, elf/dl-lookup.c, elf/dl-reloc.c,
elf/dl-runtime.c, elf/dladdr.c, elf/dlclose.c, elf/dlsym.c,
elf/linux-compat.c, elf/rtld.c: Change all uses of `Elf32_XXX' to
`ElfW(XXX)' for wordsize-independence.
Sat Jun 8 20:50:42 1996 Richard Henderson <rth@tamu.edu>
* elf/elf.h: Move Elf64_* types in parity with Elf32 counterparts.
(Elf64_auxv_t): New type.
(EM_ALPHA, R_ALPHA_*): New macros for elf64-alpha format.
1996-06-10 10:18:47 +00:00
|
|
|
{
|
1998-07-13 12:29:13 +00:00
|
|
|
const char *file;
|
|
|
|
int mode;
|
2004-03-05 03:47:38 +00:00
|
|
|
/* This is the caller of the dlopen() function. */
|
|
|
|
const void *caller_dlopen;
|
1998-07-13 12:29:13 +00:00
|
|
|
struct link_map *map;
|
[BZ #77]
Update.
Add support for namespaces in the dynamic linker.
* dlfcn/Makefile (libdl-routines): Add dlmopen.
* dlfcn/Versions [libdl, GLIBC_2.3.4]: Add dlmopen.
* dlfcn/dlfcn.h: Define Lmid_t, LM_ID_BASE, and LM_ID_NEWLM.
Declare dlmopen. Document RTLD_DI_LMID.
* dlfcn/dlinfo.c: Handle RTLD_DI_LMID.
* dlfcn/dlmopen.c: New file.
* dlfcn/dlopen.c: Pass new parameter to _dl_open.
* dlfcn/dlopenold.c: Likewise.
* elf/dl-addr.c: Adjust for removal of GL(dl_loaded).
* elf/dl-caller.c: Likewise.
* elf/dl-close.c: Likewise.
* elf/dl-conflict.c: Likewise.
* elf/dl-debug.c: Likewise.
* elf/dl-lookup.c: Likewise.
* elf/dl-sym.c: Likewise.
* elf/dl-version.c: Likewise.
* elf/do-lookup.h: Likewise.
* elf/rtld.c: Likewise.
* sysdeps/unix/sysv/linux/i386/dl-librecon.h: Likewise.
* elf/dl-depsc: Likewise. Add new parameter to _dl_map_object.
* elf/dl-fini.c: Call destructors in all namespaces.
* elf/dl-iteratephdr.c: Compute total nloaded. Adjust for removal of
GL(dl_loaded).
* elf/dl-libc.c: Pass new parameter to _dl_open. Adjust for removal
of GL(dl_loaded).
* elf/dl-load.c (_dl_map_object_from_fd): Don't load ld.so a second
time. Reuse the one from the main namespace in all others.
Pass new parameter to _dl_new_object.
Adjust for removal of GL(dl_loaded).
* elf/dl-object.c: Take new parameter. Use it to initialize l_ns.
Adjust for removal of GL(dl_loaded).
* elf/dl-open.c (_dl_open): Take new parameter.
Adjust for removal of GL(dl_loaded).
* elf/dl-support.c: Replace global _dl_loaded etc variables with
_dl_ns variable.
* include/dlfcn.h: Adjust prototype of _dl_open.
Define __LM_ID_CALLER.
* include/link.h: Add l_real, l_ns, and l_direct_opencount elements.
* sysdeps/generic/dl-tls.c: Bump TLS_STATIC_SURPLUS. Since libc is
using TLS we need memory appropriate to the number of namespaces.
* sysdeps/generic/ldsodefs.h (struct rtld_global): Replace _dl_loaded,
_dl_nloaded, _dl_global_scope, _dl_main_searchlist, and
_dl_global_scope_alloc with _dl_ns element. Define DL_NNS.
Adjust prototypes of _dl_map_object and member in rtld_global_ro.
* malloc/malloc.c: Include <dlfcn.h>.
* malloc/arena.c (ptmalloc_init): If libc is not in primary namespace,
never use brk.
* elf/Makefile: Add rules to build and run tst-dlmopen1 and
tst-dlmopen2.
* elf/tst-dlmopen1.c: New file.
* elf/tst-dlmopen1mod.c: New file.
* elf/tst-dlmopen2.c: New file.
* elf/dl-close.c: Improve reference counting by tracking direct loads.
* elf/dl-lookup.c (add_dependency): Likewise.
* elf/dl-open.c (dl_open_worker): Likewise.
* elf/rtld.c (dl_main): Likewise.
2004-09-09 GOTO Masanori <gotom@debian.or.jp>
[BZ #77]
* elf/dl-close.c: Count down l_opencount to check not only for
l_reldeps, but also l_initfini.
2004-10-13 Ulrich Drepper <drepper@redhat.com>
2004-10-14 02:08:23 +00:00
|
|
|
/* Namespace ID. */
|
|
|
|
Lmid_t nsid;
|
Avoid late failure in dlopen in global scope update [BZ #25112]
The call to add_to_global in dl_open_worker happens after running ELF
constructors for new objects. At this point, proper recovery from
malloc failure would be quite complicated: We would have to run the
ELF destructors and close all opened objects, something that we
currently do not do.
Instead, this change splits add_to_global into two phases,
add_to_global_resize (which can raise an exception, called before ELF
constructors run), and add_to_global_update (which cannot, called
after ELF constructors). A complication arises due to recursive
dlopen: After the inner dlopen consumes some space, the pre-allocation
in the outer dlopen may no longer be sufficient. A new member in the
namespace structure, _ns_global_scope_pending_adds keeps track of the
maximum number of objects that need to be added to the global scope.
This enables the inner add_to_global_resize call to take into account
the needs of an outer dlopen.
Most code in the dynamic linker assumes that the number of global
scope entries fits into an unsigned int (matching the r_nlist member
of struct r_scop_elem). Therefore, change the type of
_ns_global_scope_alloc to unsigned int (from size_t), and add overflow
checks.
Change-Id: Ie08e2f318510d5a6a4bcb1c315f46791b5b77524
2019-10-31 17:25:39 +00:00
|
|
|
|
|
|
|
/* Original value of _ns_global_scope_pending_adds. Set by
|
|
|
|
dl_open_worker. Only valid if nsid is a real namespace
|
|
|
|
(non-negative). */
|
|
|
|
unsigned int original_global_scope_pending_adds;
|
|
|
|
|
elf: Implement __libc_early_init
This function is defined in libc.so, and the dynamic loader calls
right after relocation has been finished, before any ELF constructors
or the preinit function is invoked. It is also used in the static
build for initializing parts of the static libc.
To locate __libc_early_init, a direct symbol lookup function is used,
_dl_lookup_direct. It does not search the entire symbol scope and
consults merely a single link map. This function could also be used
to implement lookups in the vDSO (as an optimization).
A per-namespace variable (libc_map) is added for locating libc.so,
to avoid repeated traversals of the search scope. It is similar to
GL(dl_initfirst). An alternative would have been to thread a context
argument from _dl_open down to _dl_map_object_from_fd (where libc.so
is identified). This could have avoided the global variable, but
the change would be larger as a result. It would not have been
possible to use this to replace GL(dl_initfirst) because that global
variable is used to pass the function pointer past the stack switch
from dl_main to the main program. Replacing that requires adding
a new argument to _dl_init, which in turn needs changes to the
architecture-specific libc.so startup code written in assembler.
__libc_early_init should not be used to replace _dl_var_init (as
it exists today on some architectures). Instead, _dl_lookup_direct
should be used to look up a new variable symbol in libc.so, and
that should then be initialized from the dynamic loader, immediately
after the object has been loaded in _dl_map_object_from_fd (before
relocation is run). This way, more IFUNC resolvers which depend on
these variables will work.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
2020-04-24 20:31:15 +00:00
|
|
|
/* Set to true by dl_open_worker if libc.so was already loaded into
|
|
|
|
the namespace at the time dl_open_worker was called. This is
|
|
|
|
used to determine whether libc.so early initialization has
|
|
|
|
already been done before, and whether to roll back the cached
|
|
|
|
libc_map value in the namespace in case of a dlopen failure. */
|
|
|
|
bool libc_already_loaded;
|
|
|
|
|
2021-09-15 14:16:19 +00:00
|
|
|
/* Set to true if the end of dl_open_worker_begin was reached. */
|
|
|
|
bool worker_continue;
|
|
|
|
|
2005-01-06 22:40:27 +00:00
|
|
|
/* Original parameters to the program and the current environment. */
|
|
|
|
int argc;
|
|
|
|
char **argv;
|
|
|
|
char **env;
|
1998-07-13 12:29:13 +00:00
|
|
|
};
|
|
|
|
|
Avoid late failure in dlopen in global scope update [BZ #25112]
The call to add_to_global in dl_open_worker happens after running ELF
constructors for new objects. At this point, proper recovery from
malloc failure would be quite complicated: We would have to run the
ELF destructors and close all opened objects, something that we
currently do not do.
Instead, this change splits add_to_global into two phases,
add_to_global_resize (which can raise an exception, called before ELF
constructors run), and add_to_global_update (which cannot, called
after ELF constructors). A complication arises due to recursive
dlopen: After the inner dlopen consumes some space, the pre-allocation
in the outer dlopen may no longer be sufficient. A new member in the
namespace structure, _ns_global_scope_pending_adds keeps track of the
maximum number of objects that need to be added to the global scope.
This enables the inner add_to_global_resize call to take into account
the needs of an outer dlopen.
Most code in the dynamic linker assumes that the number of global
scope entries fits into an unsigned int (matching the r_nlist member
of struct r_scop_elem). Therefore, change the type of
_ns_global_scope_alloc to unsigned int (from size_t), and add overflow
checks.
Change-Id: Ie08e2f318510d5a6a4bcb1c315f46791b5b77524
2019-10-31 17:25:39 +00:00
|
|
|
/* Called in case the global scope cannot be extended. */
|
|
|
|
static void __attribute__ ((noreturn))
|
|
|
|
add_to_global_resize_failure (struct link_map *new)
|
|
|
|
{
|
|
|
|
_dl_signal_error (ENOMEM, new->l_libname->name, NULL,
|
|
|
|
N_ ("cannot extend global scope"));
|
|
|
|
}
|
2000-10-21 07:16:18 +00:00
|
|
|
|
Avoid late failure in dlopen in global scope update [BZ #25112]
The call to add_to_global in dl_open_worker happens after running ELF
constructors for new objects. At this point, proper recovery from
malloc failure would be quite complicated: We would have to run the
ELF destructors and close all opened objects, something that we
currently do not do.
Instead, this change splits add_to_global into two phases,
add_to_global_resize (which can raise an exception, called before ELF
constructors run), and add_to_global_update (which cannot, called
after ELF constructors). A complication arises due to recursive
dlopen: After the inner dlopen consumes some space, the pre-allocation
in the outer dlopen may no longer be sufficient. A new member in the
namespace structure, _ns_global_scope_pending_adds keeps track of the
maximum number of objects that need to be added to the global scope.
This enables the inner add_to_global_resize call to take into account
the needs of an outer dlopen.
Most code in the dynamic linker assumes that the number of global
scope entries fits into an unsigned int (matching the r_nlist member
of struct r_scop_elem). Therefore, change the type of
_ns_global_scope_alloc to unsigned int (from size_t), and add overflow
checks.
Change-Id: Ie08e2f318510d5a6a4bcb1c315f46791b5b77524
2019-10-31 17:25:39 +00:00
|
|
|
/* Grow the global scope array for the namespace, so that all the new
|
|
|
|
global objects can be added later in add_to_global_update, without
|
|
|
|
risk of memory allocation failure. add_to_global_resize raises
|
|
|
|
exceptions for memory allocation errors. */
|
|
|
|
static void
|
|
|
|
add_to_global_resize (struct link_map *new)
|
2000-10-21 07:16:18 +00:00
|
|
|
{
|
Avoid late failure in dlopen in global scope update [BZ #25112]
The call to add_to_global in dl_open_worker happens after running ELF
constructors for new objects. At this point, proper recovery from
malloc failure would be quite complicated: We would have to run the
ELF destructors and close all opened objects, something that we
currently do not do.
Instead, this change splits add_to_global into two phases,
add_to_global_resize (which can raise an exception, called before ELF
constructors run), and add_to_global_update (which cannot, called
after ELF constructors). A complication arises due to recursive
dlopen: After the inner dlopen consumes some space, the pre-allocation
in the outer dlopen may no longer be sufficient. A new member in the
namespace structure, _ns_global_scope_pending_adds keeps track of the
maximum number of objects that need to be added to the global scope.
This enables the inner add_to_global_resize call to take into account
the needs of an outer dlopen.
Most code in the dynamic linker assumes that the number of global
scope entries fits into an unsigned int (matching the r_nlist member
of struct r_scop_elem). Therefore, change the type of
_ns_global_scope_alloc to unsigned int (from size_t), and add overflow
checks.
Change-Id: Ie08e2f318510d5a6a4bcb1c315f46791b5b77524
2019-10-31 17:25:39 +00:00
|
|
|
struct link_namespaces *ns = &GL (dl_ns)[new->l_ns];
|
2000-10-21 07:16:18 +00:00
|
|
|
|
|
|
|
/* Count the objects we have to put in the global scope. */
|
Avoid late failure in dlopen in global scope update [BZ #25112]
The call to add_to_global in dl_open_worker happens after running ELF
constructors for new objects. At this point, proper recovery from
malloc failure would be quite complicated: We would have to run the
ELF destructors and close all opened objects, something that we
currently do not do.
Instead, this change splits add_to_global into two phases,
add_to_global_resize (which can raise an exception, called before ELF
constructors run), and add_to_global_update (which cannot, called
after ELF constructors). A complication arises due to recursive
dlopen: After the inner dlopen consumes some space, the pre-allocation
in the outer dlopen may no longer be sufficient. A new member in the
namespace structure, _ns_global_scope_pending_adds keeps track of the
maximum number of objects that need to be added to the global scope.
This enables the inner add_to_global_resize call to take into account
the needs of an outer dlopen.
Most code in the dynamic linker assumes that the number of global
scope entries fits into an unsigned int (matching the r_nlist member
of struct r_scop_elem). Therefore, change the type of
_ns_global_scope_alloc to unsigned int (from size_t), and add overflow
checks.
Change-Id: Ie08e2f318510d5a6a4bcb1c315f46791b5b77524
2019-10-31 17:25:39 +00:00
|
|
|
unsigned int to_add = 0;
|
|
|
|
for (unsigned int cnt = 0; cnt < new->l_searchlist.r_nlist; ++cnt)
|
2000-10-21 07:16:18 +00:00
|
|
|
if (new->l_searchlist.r_list[cnt]->l_global == 0)
|
|
|
|
++to_add;
|
|
|
|
|
|
|
|
/* The symbols of the new objects and its dependencies are to be
|
|
|
|
introduced into the global scope that will be used to resolve
|
|
|
|
references from other dynamically-loaded objects.
|
|
|
|
|
|
|
|
The global scope is the searchlist in the main link map. We
|
|
|
|
extend this list if necessary. There is one problem though:
|
|
|
|
since this structure was allocated very early (before the libc
|
|
|
|
is loaded) the memory it uses is allocated by the malloc()-stub
|
|
|
|
in the ld.so. When we come here these functions are not used
|
|
|
|
anymore. Instead the malloc() implementation of the libc is
|
|
|
|
used. But this means the block from the main map cannot be used
|
|
|
|
in an realloc() call. Therefore we allocate a completely new
|
|
|
|
array the first time we have to add something to the locale scope. */
|
|
|
|
|
Avoid late failure in dlopen in global scope update [BZ #25112]
The call to add_to_global in dl_open_worker happens after running ELF
constructors for new objects. At this point, proper recovery from
malloc failure would be quite complicated: We would have to run the
ELF destructors and close all opened objects, something that we
currently do not do.
Instead, this change splits add_to_global into two phases,
add_to_global_resize (which can raise an exception, called before ELF
constructors run), and add_to_global_update (which cannot, called
after ELF constructors). A complication arises due to recursive
dlopen: After the inner dlopen consumes some space, the pre-allocation
in the outer dlopen may no longer be sufficient. A new member in the
namespace structure, _ns_global_scope_pending_adds keeps track of the
maximum number of objects that need to be added to the global scope.
This enables the inner add_to_global_resize call to take into account
the needs of an outer dlopen.
Most code in the dynamic linker assumes that the number of global
scope entries fits into an unsigned int (matching the r_nlist member
of struct r_scop_elem). Therefore, change the type of
_ns_global_scope_alloc to unsigned int (from size_t), and add overflow
checks.
Change-Id: Ie08e2f318510d5a6a4bcb1c315f46791b5b77524
2019-10-31 17:25:39 +00:00
|
|
|
if (__builtin_add_overflow (ns->_ns_global_scope_pending_adds, to_add,
|
|
|
|
&ns->_ns_global_scope_pending_adds))
|
|
|
|
add_to_global_resize_failure (new);
|
|
|
|
|
|
|
|
unsigned int new_size = 0; /* 0 means no new allocation. */
|
|
|
|
void *old_global = NULL; /* Old allocation if free-able. */
|
|
|
|
|
|
|
|
/* Minimum required element count for resizing. Adjusted below for
|
|
|
|
an exponential resizing policy. */
|
|
|
|
size_t required_new_size;
|
|
|
|
if (__builtin_add_overflow (ns->_ns_main_searchlist->r_nlist,
|
|
|
|
ns->_ns_global_scope_pending_adds,
|
|
|
|
&required_new_size))
|
|
|
|
add_to_global_resize_failure (new);
|
|
|
|
|
2007-05-11 18:27:20 +00:00
|
|
|
if (ns->_ns_global_scope_alloc == 0)
|
2000-10-21 07:16:18 +00:00
|
|
|
{
|
Avoid late failure in dlopen in global scope update [BZ #25112]
The call to add_to_global in dl_open_worker happens after running ELF
constructors for new objects. At this point, proper recovery from
malloc failure would be quite complicated: We would have to run the
ELF destructors and close all opened objects, something that we
currently do not do.
Instead, this change splits add_to_global into two phases,
add_to_global_resize (which can raise an exception, called before ELF
constructors run), and add_to_global_update (which cannot, called
after ELF constructors). A complication arises due to recursive
dlopen: After the inner dlopen consumes some space, the pre-allocation
in the outer dlopen may no longer be sufficient. A new member in the
namespace structure, _ns_global_scope_pending_adds keeps track of the
maximum number of objects that need to be added to the global scope.
This enables the inner add_to_global_resize call to take into account
the needs of an outer dlopen.
Most code in the dynamic linker assumes that the number of global
scope entries fits into an unsigned int (matching the r_nlist member
of struct r_scop_elem). Therefore, change the type of
_ns_global_scope_alloc to unsigned int (from size_t), and add overflow
checks.
Change-Id: Ie08e2f318510d5a6a4bcb1c315f46791b5b77524
2019-10-31 17:25:39 +00:00
|
|
|
if (__builtin_add_overflow (required_new_size, 8, &new_size))
|
|
|
|
add_to_global_resize_failure (new);
|
|
|
|
}
|
|
|
|
else if (required_new_size > ns->_ns_global_scope_alloc)
|
|
|
|
{
|
|
|
|
if (__builtin_mul_overflow (required_new_size, 2, &new_size))
|
|
|
|
add_to_global_resize_failure (new);
|
2000-10-21 07:16:18 +00:00
|
|
|
|
Avoid late failure in dlopen in global scope update [BZ #25112]
The call to add_to_global in dl_open_worker happens after running ELF
constructors for new objects. At this point, proper recovery from
malloc failure would be quite complicated: We would have to run the
ELF destructors and close all opened objects, something that we
currently do not do.
Instead, this change splits add_to_global into two phases,
add_to_global_resize (which can raise an exception, called before ELF
constructors run), and add_to_global_update (which cannot, called
after ELF constructors). A complication arises due to recursive
dlopen: After the inner dlopen consumes some space, the pre-allocation
in the outer dlopen may no longer be sufficient. A new member in the
namespace structure, _ns_global_scope_pending_adds keeps track of the
maximum number of objects that need to be added to the global scope.
This enables the inner add_to_global_resize call to take into account
the needs of an outer dlopen.
Most code in the dynamic linker assumes that the number of global
scope entries fits into an unsigned int (matching the r_nlist member
of struct r_scop_elem). Therefore, change the type of
_ns_global_scope_alloc to unsigned int (from size_t), and add overflow
checks.
Change-Id: Ie08e2f318510d5a6a4bcb1c315f46791b5b77524
2019-10-31 17:25:39 +00:00
|
|
|
/* The old array was allocated with our malloc, not the minimal
|
|
|
|
malloc. */
|
|
|
|
old_global = ns->_ns_main_searchlist->r_list;
|
2000-10-21 07:16:18 +00:00
|
|
|
}
|
Avoid late failure in dlopen in global scope update [BZ #25112]
The call to add_to_global in dl_open_worker happens after running ELF
constructors for new objects. At this point, proper recovery from
malloc failure would be quite complicated: We would have to run the
ELF destructors and close all opened objects, something that we
currently do not do.
Instead, this change splits add_to_global into two phases,
add_to_global_resize (which can raise an exception, called before ELF
constructors run), and add_to_global_update (which cannot, called
after ELF constructors). A complication arises due to recursive
dlopen: After the inner dlopen consumes some space, the pre-allocation
in the outer dlopen may no longer be sufficient. A new member in the
namespace structure, _ns_global_scope_pending_adds keeps track of the
maximum number of objects that need to be added to the global scope.
This enables the inner add_to_global_resize call to take into account
the needs of an outer dlopen.
Most code in the dynamic linker assumes that the number of global
scope entries fits into an unsigned int (matching the r_nlist member
of struct r_scop_elem). Therefore, change the type of
_ns_global_scope_alloc to unsigned int (from size_t), and add overflow
checks.
Change-Id: Ie08e2f318510d5a6a4bcb1c315f46791b5b77524
2019-10-31 17:25:39 +00:00
|
|
|
|
|
|
|
if (new_size > 0)
|
2000-10-21 07:16:18 +00:00
|
|
|
{
|
Avoid late failure in dlopen in global scope update [BZ #25112]
The call to add_to_global in dl_open_worker happens after running ELF
constructors for new objects. At this point, proper recovery from
malloc failure would be quite complicated: We would have to run the
ELF destructors and close all opened objects, something that we
currently do not do.
Instead, this change splits add_to_global into two phases,
add_to_global_resize (which can raise an exception, called before ELF
constructors run), and add_to_global_update (which cannot, called
after ELF constructors). A complication arises due to recursive
dlopen: After the inner dlopen consumes some space, the pre-allocation
in the outer dlopen may no longer be sufficient. A new member in the
namespace structure, _ns_global_scope_pending_adds keeps track of the
maximum number of objects that need to be added to the global scope.
This enables the inner add_to_global_resize call to take into account
the needs of an outer dlopen.
Most code in the dynamic linker assumes that the number of global
scope entries fits into an unsigned int (matching the r_nlist member
of struct r_scop_elem). Therefore, change the type of
_ns_global_scope_alloc to unsigned int (from size_t), and add overflow
checks.
Change-Id: Ie08e2f318510d5a6a4bcb1c315f46791b5b77524
2019-10-31 17:25:39 +00:00
|
|
|
size_t allocation_size;
|
|
|
|
if (__builtin_mul_overflow (new_size, sizeof (struct link_map *),
|
|
|
|
&allocation_size))
|
|
|
|
add_to_global_resize_failure (new);
|
|
|
|
struct link_map **new_global = malloc (allocation_size);
|
2000-10-21 07:16:18 +00:00
|
|
|
if (new_global == NULL)
|
Avoid late failure in dlopen in global scope update [BZ #25112]
The call to add_to_global in dl_open_worker happens after running ELF
constructors for new objects. At this point, proper recovery from
malloc failure would be quite complicated: We would have to run the
ELF destructors and close all opened objects, something that we
currently do not do.
Instead, this change splits add_to_global into two phases,
add_to_global_resize (which can raise an exception, called before ELF
constructors run), and add_to_global_update (which cannot, called
after ELF constructors). A complication arises due to recursive
dlopen: After the inner dlopen consumes some space, the pre-allocation
in the outer dlopen may no longer be sufficient. A new member in the
namespace structure, _ns_global_scope_pending_adds keeps track of the
maximum number of objects that need to be added to the global scope.
This enables the inner add_to_global_resize call to take into account
the needs of an outer dlopen.
Most code in the dynamic linker assumes that the number of global
scope entries fits into an unsigned int (matching the r_nlist member
of struct r_scop_elem). Therefore, change the type of
_ns_global_scope_alloc to unsigned int (from size_t), and add overflow
checks.
Change-Id: Ie08e2f318510d5a6a4bcb1c315f46791b5b77524
2019-10-31 17:25:39 +00:00
|
|
|
add_to_global_resize_failure (new);
|
2000-10-21 07:16:18 +00:00
|
|
|
|
Avoid late failure in dlopen in global scope update [BZ #25112]
The call to add_to_global in dl_open_worker happens after running ELF
constructors for new objects. At this point, proper recovery from
malloc failure would be quite complicated: We would have to run the
ELF destructors and close all opened objects, something that we
currently do not do.
Instead, this change splits add_to_global into two phases,
add_to_global_resize (which can raise an exception, called before ELF
constructors run), and add_to_global_update (which cannot, called
after ELF constructors). A complication arises due to recursive
dlopen: After the inner dlopen consumes some space, the pre-allocation
in the outer dlopen may no longer be sufficient. A new member in the
namespace structure, _ns_global_scope_pending_adds keeps track of the
maximum number of objects that need to be added to the global scope.
This enables the inner add_to_global_resize call to take into account
the needs of an outer dlopen.
Most code in the dynamic linker assumes that the number of global
scope entries fits into an unsigned int (matching the r_nlist member
of struct r_scop_elem). Therefore, change the type of
_ns_global_scope_alloc to unsigned int (from size_t), and add overflow
checks.
Change-Id: Ie08e2f318510d5a6a4bcb1c315f46791b5b77524
2019-10-31 17:25:39 +00:00
|
|
|
/* Copy over the old entries. */
|
|
|
|
memcpy (new_global, ns->_ns_main_searchlist->r_list,
|
|
|
|
ns->_ns_main_searchlist->r_nlist * sizeof (struct link_map *));
|
2007-05-19 07:08:23 +00:00
|
|
|
|
Avoid late failure in dlopen in global scope update [BZ #25112]
The call to add_to_global in dl_open_worker happens after running ELF
constructors for new objects. At this point, proper recovery from
malloc failure would be quite complicated: We would have to run the
ELF destructors and close all opened objects, something that we
currently do not do.
Instead, this change splits add_to_global into two phases,
add_to_global_resize (which can raise an exception, called before ELF
constructors run), and add_to_global_update (which cannot, called
after ELF constructors). A complication arises due to recursive
dlopen: After the inner dlopen consumes some space, the pre-allocation
in the outer dlopen may no longer be sufficient. A new member in the
namespace structure, _ns_global_scope_pending_adds keeps track of the
maximum number of objects that need to be added to the global scope.
This enables the inner add_to_global_resize call to take into account
the needs of an outer dlopen.
Most code in the dynamic linker assumes that the number of global
scope entries fits into an unsigned int (matching the r_nlist member
of struct r_scop_elem). Therefore, change the type of
_ns_global_scope_alloc to unsigned int (from size_t), and add overflow
checks.
Change-Id: Ie08e2f318510d5a6a4bcb1c315f46791b5b77524
2019-10-31 17:25:39 +00:00
|
|
|
ns->_ns_global_scope_alloc = new_size;
|
2007-05-11 18:27:20 +00:00
|
|
|
ns->_ns_main_searchlist->r_list = new_global;
|
2007-05-19 07:08:23 +00:00
|
|
|
|
|
|
|
if (!RTLD_SINGLE_THREAD_P)
|
|
|
|
THREAD_GSCOPE_WAIT ();
|
|
|
|
|
|
|
|
free (old_global);
|
2000-10-21 07:16:18 +00:00
|
|
|
}
|
Avoid late failure in dlopen in global scope update [BZ #25112]
The call to add_to_global in dl_open_worker happens after running ELF
constructors for new objects. At this point, proper recovery from
malloc failure would be quite complicated: We would have to run the
ELF destructors and close all opened objects, something that we
currently do not do.
Instead, this change splits add_to_global into two phases,
add_to_global_resize (which can raise an exception, called before ELF
constructors run), and add_to_global_update (which cannot, called
after ELF constructors). A complication arises due to recursive
dlopen: After the inner dlopen consumes some space, the pre-allocation
in the outer dlopen may no longer be sufficient. A new member in the
namespace structure, _ns_global_scope_pending_adds keeps track of the
maximum number of objects that need to be added to the global scope.
This enables the inner add_to_global_resize call to take into account
the needs of an outer dlopen.
Most code in the dynamic linker assumes that the number of global
scope entries fits into an unsigned int (matching the r_nlist member
of struct r_scop_elem). Therefore, change the type of
_ns_global_scope_alloc to unsigned int (from size_t), and add overflow
checks.
Change-Id: Ie08e2f318510d5a6a4bcb1c315f46791b5b77524
2019-10-31 17:25:39 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Actually add the new global objects to the global scope. Must be
|
|
|
|
called after add_to_global_resize. This function cannot fail. */
|
|
|
|
static void
|
|
|
|
add_to_global_update (struct link_map *new)
|
|
|
|
{
|
|
|
|
struct link_namespaces *ns = &GL (dl_ns)[new->l_ns];
|
2000-10-21 07:16:18 +00:00
|
|
|
|
|
|
|
/* Now add the new entries. */
|
2007-05-11 21:34:32 +00:00
|
|
|
unsigned int new_nlist = ns->_ns_main_searchlist->r_nlist;
|
Avoid late failure in dlopen in global scope update [BZ #25112]
The call to add_to_global in dl_open_worker happens after running ELF
constructors for new objects. At this point, proper recovery from
malloc failure would be quite complicated: We would have to run the
ELF destructors and close all opened objects, something that we
currently do not do.
Instead, this change splits add_to_global into two phases,
add_to_global_resize (which can raise an exception, called before ELF
constructors run), and add_to_global_update (which cannot, called
after ELF constructors). A complication arises due to recursive
dlopen: After the inner dlopen consumes some space, the pre-allocation
in the outer dlopen may no longer be sufficient. A new member in the
namespace structure, _ns_global_scope_pending_adds keeps track of the
maximum number of objects that need to be added to the global scope.
This enables the inner add_to_global_resize call to take into account
the needs of an outer dlopen.
Most code in the dynamic linker assumes that the number of global
scope entries fits into an unsigned int (matching the r_nlist member
of struct r_scop_elem). Therefore, change the type of
_ns_global_scope_alloc to unsigned int (from size_t), and add overflow
checks.
Change-Id: Ie08e2f318510d5a6a4bcb1c315f46791b5b77524
2019-10-31 17:25:39 +00:00
|
|
|
for (unsigned int cnt = 0; cnt < new->l_searchlist.r_nlist; ++cnt)
|
2000-10-21 07:16:18 +00:00
|
|
|
{
|
|
|
|
struct link_map *map = new->l_searchlist.r_list[cnt];
|
|
|
|
|
|
|
|
if (map->l_global == 0)
|
|
|
|
{
|
|
|
|
map->l_global = 1;
|
Avoid late failure in dlopen in global scope update [BZ #25112]
The call to add_to_global in dl_open_worker happens after running ELF
constructors for new objects. At this point, proper recovery from
malloc failure would be quite complicated: We would have to run the
ELF destructors and close all opened objects, something that we
currently do not do.
Instead, this change splits add_to_global into two phases,
add_to_global_resize (which can raise an exception, called before ELF
constructors run), and add_to_global_update (which cannot, called
after ELF constructors). A complication arises due to recursive
dlopen: After the inner dlopen consumes some space, the pre-allocation
in the outer dlopen may no longer be sufficient. A new member in the
namespace structure, _ns_global_scope_pending_adds keeps track of the
maximum number of objects that need to be added to the global scope.
This enables the inner add_to_global_resize call to take into account
the needs of an outer dlopen.
Most code in the dynamic linker assumes that the number of global
scope entries fits into an unsigned int (matching the r_nlist member
of struct r_scop_elem). Therefore, change the type of
_ns_global_scope_alloc to unsigned int (from size_t), and add overflow
checks.
Change-Id: Ie08e2f318510d5a6a4bcb1c315f46791b5b77524
2019-10-31 17:25:39 +00:00
|
|
|
|
|
|
|
/* The array has been resized by add_to_global_resize. */
|
|
|
|
assert (new_nlist < ns->_ns_global_scope_alloc);
|
|
|
|
|
2007-05-11 21:34:32 +00:00
|
|
|
ns->_ns_main_searchlist->r_list[new_nlist++] = map;
|
2011-08-20 16:59:45 +00:00
|
|
|
|
|
|
|
/* We modify the global scope. Report this. */
|
2014-02-10 13:45:42 +00:00
|
|
|
if (__glibc_unlikely (GLRO(dl_debug_mask) & DL_DEBUG_SCOPES))
|
2011-08-20 16:59:45 +00:00
|
|
|
_dl_debug_printf ("\nadd %s [%lu] to global scope\n",
|
|
|
|
map->l_name, map->l_ns);
|
2000-10-21 07:16:18 +00:00
|
|
|
}
|
|
|
|
}
|
Avoid late failure in dlopen in global scope update [BZ #25112]
The call to add_to_global in dl_open_worker happens after running ELF
constructors for new objects. At this point, proper recovery from
malloc failure would be quite complicated: We would have to run the
ELF destructors and close all opened objects, something that we
currently do not do.
Instead, this change splits add_to_global into two phases,
add_to_global_resize (which can raise an exception, called before ELF
constructors run), and add_to_global_update (which cannot, called
after ELF constructors). A complication arises due to recursive
dlopen: After the inner dlopen consumes some space, the pre-allocation
in the outer dlopen may no longer be sufficient. A new member in the
namespace structure, _ns_global_scope_pending_adds keeps track of the
maximum number of objects that need to be added to the global scope.
This enables the inner add_to_global_resize call to take into account
the needs of an outer dlopen.
Most code in the dynamic linker assumes that the number of global
scope entries fits into an unsigned int (matching the r_nlist member
of struct r_scop_elem). Therefore, change the type of
_ns_global_scope_alloc to unsigned int (from size_t), and add overflow
checks.
Change-Id: Ie08e2f318510d5a6a4bcb1c315f46791b5b77524
2019-10-31 17:25:39 +00:00
|
|
|
|
|
|
|
/* Some of the pending adds have been performed by the loop above.
|
|
|
|
Adjust the counter accordingly. */
|
|
|
|
unsigned int added = new_nlist - ns->_ns_main_searchlist->r_nlist;
|
|
|
|
assert (added <= ns->_ns_global_scope_pending_adds);
|
|
|
|
ns->_ns_global_scope_pending_adds -= added;
|
|
|
|
|
2007-05-11 18:27:20 +00:00
|
|
|
atomic_write_barrier ();
|
2007-05-11 21:34:32 +00:00
|
|
|
ns->_ns_main_searchlist->r_nlist = new_nlist;
|
2000-10-21 07:16:18 +00:00
|
|
|
}
|
|
|
|
|
2013-08-30 12:32:07 +00:00
|
|
|
/* Search link maps in all namespaces for the DSO that contains the object at
|
2013-02-18 12:30:17 +00:00
|
|
|
address ADDR. Returns the pointer to the link map of the matching DSO, or
|
|
|
|
NULL if a match is not found. */
|
|
|
|
struct link_map *
|
|
|
|
_dl_find_dso_for_object (const ElfW(Addr) addr)
|
|
|
|
{
|
|
|
|
struct link_map *l;
|
|
|
|
|
|
|
|
/* Find the highest-addressed object that ADDR is not below. */
|
|
|
|
for (Lmid_t ns = 0; ns < GL(dl_nns); ++ns)
|
|
|
|
for (l = GL(dl_ns)[ns]._ns_loaded; l != NULL; l = l->l_next)
|
|
|
|
if (addr >= l->l_map_start && addr < l->l_map_end
|
|
|
|
&& (l->l_contiguous
|
|
|
|
|| _dl_addr_inside_object (l, (ElfW(Addr)) addr)))
|
|
|
|
{
|
|
|
|
assert (ns == l->l_ns);
|
|
|
|
return l;
|
|
|
|
}
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
rtld_hidden_def (_dl_find_dso_for_object);
|
|
|
|
|
2019-11-27 15:37:17 +00:00
|
|
|
/* Return true if NEW is found in the scope for MAP. */
|
|
|
|
static size_t
|
|
|
|
scope_has_map (struct link_map *map, struct link_map *new)
|
|
|
|
{
|
|
|
|
size_t cnt;
|
|
|
|
for (cnt = 0; map->l_scope[cnt] != NULL; ++cnt)
|
|
|
|
if (map->l_scope[cnt] == &new->l_searchlist)
|
|
|
|
return true;
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Return the length of the scope for MAP. */
|
|
|
|
static size_t
|
|
|
|
scope_size (struct link_map *map)
|
|
|
|
{
|
|
|
|
size_t cnt;
|
|
|
|
for (cnt = 0; map->l_scope[cnt] != NULL; )
|
|
|
|
++cnt;
|
|
|
|
return cnt;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Resize the scopes of depended-upon objects, so that the new object
|
|
|
|
can be added later without further allocation of memory. This
|
|
|
|
function can raise an exceptions due to malloc failure. */
|
|
|
|
static void
|
|
|
|
resize_scopes (struct link_map *new)
|
|
|
|
{
|
|
|
|
/* If the file is not loaded now as a dependency, add the search
|
|
|
|
list of the newly loaded object to the scope. */
|
|
|
|
for (unsigned int i = 0; i < new->l_searchlist.r_nlist; ++i)
|
|
|
|
{
|
|
|
|
struct link_map *imap = new->l_searchlist.r_list[i];
|
|
|
|
|
|
|
|
/* If the initializer has been called already, the object has
|
|
|
|
not been loaded here and now. */
|
|
|
|
if (imap->l_init_called && imap->l_type == lt_loaded)
|
|
|
|
{
|
|
|
|
if (scope_has_map (imap, new))
|
|
|
|
/* Avoid duplicates. */
|
|
|
|
continue;
|
|
|
|
|
|
|
|
size_t cnt = scope_size (imap);
|
|
|
|
if (__glibc_unlikely (cnt + 1 >= imap->l_scope_max))
|
|
|
|
{
|
|
|
|
/* The l_scope array is too small. Allocate a new one
|
|
|
|
dynamically. */
|
|
|
|
size_t new_size;
|
|
|
|
struct r_scope_elem **newp;
|
|
|
|
|
|
|
|
if (imap->l_scope != imap->l_scope_mem
|
|
|
|
&& imap->l_scope_max < array_length (imap->l_scope_mem))
|
|
|
|
{
|
|
|
|
/* If the current l_scope memory is not pointing to
|
|
|
|
the static memory in the structure, but the
|
|
|
|
static memory in the structure is large enough to
|
|
|
|
use for cnt + 1 scope entries, then switch to
|
|
|
|
using the static memory. */
|
|
|
|
new_size = array_length (imap->l_scope_mem);
|
|
|
|
newp = imap->l_scope_mem;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
new_size = imap->l_scope_max * 2;
|
|
|
|
newp = (struct r_scope_elem **)
|
|
|
|
malloc (new_size * sizeof (struct r_scope_elem *));
|
|
|
|
if (newp == NULL)
|
|
|
|
_dl_signal_error (ENOMEM, "dlopen", NULL,
|
|
|
|
N_("cannot create scope list"));
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Copy the array and the terminating NULL. */
|
|
|
|
memcpy (newp, imap->l_scope,
|
|
|
|
(cnt + 1) * sizeof (imap->l_scope[0]));
|
|
|
|
struct r_scope_elem **old = imap->l_scope;
|
|
|
|
|
|
|
|
imap->l_scope = newp;
|
|
|
|
|
|
|
|
if (old != imap->l_scope_mem)
|
|
|
|
_dl_scope_free (old);
|
|
|
|
|
|
|
|
imap->l_scope_max = new_size;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Second stage of resize_scopes: Add NEW to the scopes. Also print
|
|
|
|
debugging information about scopes if requested.
|
|
|
|
|
|
|
|
This function cannot raise an exception because all required memory
|
|
|
|
has been allocated by a previous call to resize_scopes. */
|
|
|
|
static void
|
|
|
|
update_scopes (struct link_map *new)
|
|
|
|
{
|
|
|
|
for (unsigned int i = 0; i < new->l_searchlist.r_nlist; ++i)
|
|
|
|
{
|
|
|
|
struct link_map *imap = new->l_searchlist.r_list[i];
|
|
|
|
int from_scope = 0;
|
|
|
|
|
|
|
|
if (imap->l_init_called && imap->l_type == lt_loaded)
|
|
|
|
{
|
|
|
|
if (scope_has_map (imap, new))
|
|
|
|
/* Avoid duplicates. */
|
|
|
|
continue;
|
|
|
|
|
|
|
|
size_t cnt = scope_size (imap);
|
|
|
|
/* Assert that resize_scopes has sufficiently enlarged the
|
|
|
|
array. */
|
|
|
|
assert (cnt + 1 < imap->l_scope_max);
|
|
|
|
|
|
|
|
/* First terminate the extended list. Otherwise a thread
|
|
|
|
might use the new last element and then use the garbage
|
|
|
|
at offset IDX+1. */
|
|
|
|
imap->l_scope[cnt + 1] = NULL;
|
|
|
|
atomic_write_barrier ();
|
|
|
|
imap->l_scope[cnt] = &new->l_searchlist;
|
|
|
|
|
|
|
|
from_scope = cnt;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Print scope information. */
|
|
|
|
if (__glibc_unlikely (GLRO(dl_debug_mask) & DL_DEBUG_SCOPES))
|
|
|
|
_dl_show_scope (imap, from_scope);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Call _dl_add_to_slotinfo with DO_ADD set to false, to allocate
|
|
|
|
space in GL (dl_tls_dtv_slotinfo_list). This can raise an
|
|
|
|
exception. The return value is true if any of the new objects use
|
|
|
|
TLS. */
|
|
|
|
static bool
|
|
|
|
resize_tls_slotinfo (struct link_map *new)
|
|
|
|
{
|
|
|
|
bool any_tls = false;
|
|
|
|
for (unsigned int i = 0; i < new->l_searchlist.r_nlist; ++i)
|
|
|
|
{
|
|
|
|
struct link_map *imap = new->l_searchlist.r_list[i];
|
|
|
|
|
|
|
|
/* Only add TLS memory if this object is loaded now and
|
|
|
|
therefore is not yet initialized. */
|
|
|
|
if (! imap->l_init_called && imap->l_tls_blocksize > 0)
|
|
|
|
{
|
|
|
|
_dl_add_to_slotinfo (imap, false);
|
|
|
|
any_tls = true;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return any_tls;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Second stage of TLS update, after resize_tls_slotinfo. This
|
|
|
|
function does not raise any exception. It should only be called if
|
|
|
|
resize_tls_slotinfo returned true. */
|
|
|
|
static void
|
|
|
|
update_tls_slotinfo (struct link_map *new)
|
|
|
|
{
|
|
|
|
unsigned int first_static_tls = new->l_searchlist.r_nlist;
|
|
|
|
for (unsigned int i = 0; i < new->l_searchlist.r_nlist; ++i)
|
|
|
|
{
|
|
|
|
struct link_map *imap = new->l_searchlist.r_list[i];
|
|
|
|
|
|
|
|
/* Only add TLS memory if this object is loaded now and
|
|
|
|
therefore is not yet initialized. */
|
|
|
|
if (! imap->l_init_called && imap->l_tls_blocksize > 0)
|
|
|
|
{
|
|
|
|
_dl_add_to_slotinfo (imap, true);
|
|
|
|
|
|
|
|
if (imap->l_need_tls_init
|
|
|
|
&& first_static_tls == new->l_searchlist.r_nlist)
|
|
|
|
first_static_tls = i;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2020-12-30 19:19:37 +00:00
|
|
|
size_t newgen = GL(dl_tls_generation) + 1;
|
|
|
|
if (__glibc_unlikely (newgen == 0))
|
2019-11-27 15:37:17 +00:00
|
|
|
_dl_fatal_printf (N_("\
|
|
|
|
TLS generation counter wrapped! Please report this."));
|
2020-12-30 19:19:37 +00:00
|
|
|
/* Can be read concurrently. */
|
2021-02-16 12:55:13 +00:00
|
|
|
atomic_store_release (&GL(dl_tls_generation), newgen);
|
2019-11-27 15:37:17 +00:00
|
|
|
|
|
|
|
/* We need a second pass for static tls data, because
|
|
|
|
_dl_update_slotinfo must not be run while calls to
|
|
|
|
_dl_add_to_slotinfo are still pending. */
|
|
|
|
for (unsigned int i = first_static_tls; i < new->l_searchlist.r_nlist; ++i)
|
|
|
|
{
|
|
|
|
struct link_map *imap = new->l_searchlist.r_list[i];
|
|
|
|
|
|
|
|
if (imap->l_need_tls_init
|
|
|
|
&& ! imap->l_init_called
|
|
|
|
&& imap->l_tls_blocksize > 0)
|
|
|
|
{
|
|
|
|
/* For static TLS we have to allocate the memory here and
|
|
|
|
now, but we can delay updating the DTV. */
|
|
|
|
imap->l_need_tls_init = 0;
|
|
|
|
#ifdef SHARED
|
2021-02-16 12:55:13 +00:00
|
|
|
/* Update the slot information data for the current
|
|
|
|
generation. */
|
2019-11-27 15:37:17 +00:00
|
|
|
|
|
|
|
/* FIXME: This can terminate the process on memory
|
|
|
|
allocation failure. It is not possible to raise
|
|
|
|
exceptions from this context; to fix this bug,
|
|
|
|
_dl_update_slotinfo would have to be split into two
|
|
|
|
operations, similar to resize_scopes and update_scopes
|
|
|
|
above. This is related to bug 16134. */
|
2021-02-16 12:55:13 +00:00
|
|
|
_dl_update_slotinfo (imap->l_tls_modid, newgen);
|
2019-11-27 15:37:17 +00:00
|
|
|
#endif
|
|
|
|
|
2021-05-05 04:20:31 +00:00
|
|
|
dl_init_static_tls (imap);
|
2019-11-27 15:37:17 +00:00
|
|
|
assert (imap->l_need_tls_init == 0);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2019-11-13 14:44:56 +00:00
|
|
|
/* Mark the objects as NODELETE if required. This is delayed until
|
|
|
|
after dlopen failure is not possible, so that _dl_close can clean
|
|
|
|
up objects if necessary. */
|
|
|
|
static void
|
2019-12-13 09:18:24 +00:00
|
|
|
activate_nodelete (struct link_map *new)
|
2019-11-13 14:44:56 +00:00
|
|
|
{
|
2019-12-13 09:18:24 +00:00
|
|
|
/* It is necessary to traverse the entire namespace. References to
|
|
|
|
objects in the global scope and unique symbol bindings can force
|
|
|
|
NODELETE status for objects outside the local scope. */
|
|
|
|
for (struct link_map *l = GL (dl_ns)[new->l_ns]._ns_loaded; l != NULL;
|
|
|
|
l = l->l_next)
|
2019-12-13 09:18:46 +00:00
|
|
|
if (l->l_nodelete_pending)
|
2019-12-13 09:18:24 +00:00
|
|
|
{
|
|
|
|
if (__glibc_unlikely (GLRO (dl_debug_mask) & DL_DEBUG_FILES))
|
|
|
|
_dl_debug_printf ("activating NODELETE for %s [%lu]\n",
|
|
|
|
l->l_name, l->l_ns);
|
|
|
|
|
2019-12-13 09:23:10 +00:00
|
|
|
/* The flag can already be true at this point, e.g. a signal
|
|
|
|
handler may have triggered lazy binding and set NODELETE
|
|
|
|
status immediately. */
|
2019-12-13 09:18:46 +00:00
|
|
|
l->l_nodelete_active = true;
|
|
|
|
|
|
|
|
/* This is just a debugging aid, to indicate that
|
|
|
|
activate_nodelete has run for this map. */
|
|
|
|
l->l_nodelete_pending = false;
|
2019-12-13 09:18:24 +00:00
|
|
|
}
|
2019-11-13 14:44:56 +00:00
|
|
|
}
|
|
|
|
|
2023-11-27 10:28:10 +00:00
|
|
|
/* Relocate the object L. *RELOCATION_IN_PROGRESS controls whether
|
|
|
|
the debugger is notified of the start of relocation processing. */
|
|
|
|
static void
|
|
|
|
_dl_open_relocate_one_object (struct dl_open_args *args, struct r_debug *r,
|
|
|
|
struct link_map *l, int reloc_mode,
|
|
|
|
bool *relocation_in_progress)
|
|
|
|
{
|
|
|
|
if (l->l_real->l_relocated)
|
|
|
|
return;
|
|
|
|
|
|
|
|
if (!*relocation_in_progress)
|
|
|
|
{
|
|
|
|
/* Notify the debugger that relocations are about to happen. */
|
|
|
|
LIBC_PROBE (reloc_start, 2, args->nsid, r);
|
|
|
|
*relocation_in_progress = true;
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef SHARED
|
|
|
|
if (__glibc_unlikely (GLRO(dl_profile) != NULL))
|
|
|
|
{
|
|
|
|
/* If this here is the shared object which we want to profile
|
|
|
|
make sure the profile is started. We can find out whether
|
|
|
|
this is necessary or not by observing the `_dl_profile_map'
|
|
|
|
variable. If it was NULL but is not NULL afterwards we must
|
|
|
|
start the profiling. */
|
|
|
|
struct link_map *old_profile_map = GL(dl_profile_map);
|
|
|
|
|
|
|
|
_dl_relocate_object (l, l->l_scope, reloc_mode | RTLD_LAZY, 1);
|
|
|
|
|
|
|
|
if (old_profile_map == NULL && GL(dl_profile_map) != NULL)
|
|
|
|
{
|
|
|
|
/* We must prepare the profiling. */
|
|
|
|
_dl_start_profile ();
|
|
|
|
|
|
|
|
/* Prevent unloading the object. */
|
|
|
|
GL(dl_profile_map)->l_nodelete_active = true;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else
|
|
|
|
#endif
|
|
|
|
_dl_relocate_object (l, l->l_scope, reloc_mode, 0);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2019-11-27 15:20:47 +00:00
|
|
|
/* struct dl_init_args and call_dl_init are used to call _dl_init with
|
|
|
|
exception handling disabled. */
|
|
|
|
struct dl_init_args
|
|
|
|
{
|
|
|
|
struct link_map *new;
|
|
|
|
int argc;
|
|
|
|
char **argv;
|
|
|
|
char **env;
|
|
|
|
};
|
|
|
|
|
|
|
|
static void
|
|
|
|
call_dl_init (void *closure)
|
|
|
|
{
|
|
|
|
struct dl_init_args *args = closure;
|
|
|
|
_dl_init (args->new, args->argc, args->argv, args->env);
|
|
|
|
}
|
|
|
|
|
1998-07-13 12:29:13 +00:00
|
|
|
static void
|
2021-09-15 14:16:19 +00:00
|
|
|
dl_open_worker_begin (void *a)
|
1998-07-13 12:29:13 +00:00
|
|
|
{
|
|
|
|
struct dl_open_args *args = a;
|
|
|
|
const char *file = args->file;
|
|
|
|
int mode = args->mode;
|
2004-08-09 06:41:04 +00:00
|
|
|
struct link_map *call_map = NULL;
|
1999-05-05 23:29:18 +00:00
|
|
|
|
2004-08-09 06:41:04 +00:00
|
|
|
/* Determine the caller's map if necessary. This is needed in case
|
[BZ #77]
Update.
Add support for namespaces in the dynamic linker.
* dlfcn/Makefile (libdl-routines): Add dlmopen.
* dlfcn/Versions [libdl, GLIBC_2.3.4]: Add dlmopen.
* dlfcn/dlfcn.h: Define Lmid_t, LM_ID_BASE, and LM_ID_NEWLM.
Declare dlmopen. Document RTLD_DI_LMID.
* dlfcn/dlinfo.c: Handle RTLD_DI_LMID.
* dlfcn/dlmopen.c: New file.
* dlfcn/dlopen.c: Pass new parameter to _dl_open.
* dlfcn/dlopenold.c: Likewise.
* elf/dl-addr.c: Adjust for removal of GL(dl_loaded).
* elf/dl-caller.c: Likewise.
* elf/dl-close.c: Likewise.
* elf/dl-conflict.c: Likewise.
* elf/dl-debug.c: Likewise.
* elf/dl-lookup.c: Likewise.
* elf/dl-sym.c: Likewise.
* elf/dl-version.c: Likewise.
* elf/do-lookup.h: Likewise.
* elf/rtld.c: Likewise.
* sysdeps/unix/sysv/linux/i386/dl-librecon.h: Likewise.
* elf/dl-depsc: Likewise. Add new parameter to _dl_map_object.
* elf/dl-fini.c: Call destructors in all namespaces.
* elf/dl-iteratephdr.c: Compute total nloaded. Adjust for removal of
GL(dl_loaded).
* elf/dl-libc.c: Pass new parameter to _dl_open. Adjust for removal
of GL(dl_loaded).
* elf/dl-load.c (_dl_map_object_from_fd): Don't load ld.so a second
time. Reuse the one from the main namespace in all others.
Pass new parameter to _dl_new_object.
Adjust for removal of GL(dl_loaded).
* elf/dl-object.c: Take new parameter. Use it to initialize l_ns.
Adjust for removal of GL(dl_loaded).
* elf/dl-open.c (_dl_open): Take new parameter.
Adjust for removal of GL(dl_loaded).
* elf/dl-support.c: Replace global _dl_loaded etc variables with
_dl_ns variable.
* include/dlfcn.h: Adjust prototype of _dl_open.
Define __LM_ID_CALLER.
* include/link.h: Add l_real, l_ns, and l_direct_opencount elements.
* sysdeps/generic/dl-tls.c: Bump TLS_STATIC_SURPLUS. Since libc is
using TLS we need memory appropriate to the number of namespaces.
* sysdeps/generic/ldsodefs.h (struct rtld_global): Replace _dl_loaded,
_dl_nloaded, _dl_global_scope, _dl_main_searchlist, and
_dl_global_scope_alloc with _dl_ns element. Define DL_NNS.
Adjust prototypes of _dl_map_object and member in rtld_global_ro.
* malloc/malloc.c: Include <dlfcn.h>.
* malloc/arena.c (ptmalloc_init): If libc is not in primary namespace,
never use brk.
* elf/Makefile: Add rules to build and run tst-dlmopen1 and
tst-dlmopen2.
* elf/tst-dlmopen1.c: New file.
* elf/tst-dlmopen1mod.c: New file.
* elf/tst-dlmopen2.c: New file.
* elf/dl-close.c: Improve reference counting by tracking direct loads.
* elf/dl-lookup.c (add_dependency): Likewise.
* elf/dl-open.c (dl_open_worker): Likewise.
* elf/rtld.c (dl_main): Likewise.
2004-09-09 GOTO Masanori <gotom@debian.or.jp>
[BZ #77]
* elf/dl-close.c: Count down l_opencount to check not only for
l_reldeps, but also l_initfini.
2004-10-13 Ulrich Drepper <drepper@redhat.com>
2004-10-14 02:08:23 +00:00
|
|
|
we have a DST, when we don't know the namespace ID we have to put
|
|
|
|
the new object in, or when the file name has no path in which
|
|
|
|
case we need to look along the RUNPATH/RPATH of the caller. */
|
2004-08-09 06:41:04 +00:00
|
|
|
const char *dst = strchr (file, '$');
|
[BZ #77]
Update.
Add support for namespaces in the dynamic linker.
* dlfcn/Makefile (libdl-routines): Add dlmopen.
* dlfcn/Versions [libdl, GLIBC_2.3.4]: Add dlmopen.
* dlfcn/dlfcn.h: Define Lmid_t, LM_ID_BASE, and LM_ID_NEWLM.
Declare dlmopen. Document RTLD_DI_LMID.
* dlfcn/dlinfo.c: Handle RTLD_DI_LMID.
* dlfcn/dlmopen.c: New file.
* dlfcn/dlopen.c: Pass new parameter to _dl_open.
* dlfcn/dlopenold.c: Likewise.
* elf/dl-addr.c: Adjust for removal of GL(dl_loaded).
* elf/dl-caller.c: Likewise.
* elf/dl-close.c: Likewise.
* elf/dl-conflict.c: Likewise.
* elf/dl-debug.c: Likewise.
* elf/dl-lookup.c: Likewise.
* elf/dl-sym.c: Likewise.
* elf/dl-version.c: Likewise.
* elf/do-lookup.h: Likewise.
* elf/rtld.c: Likewise.
* sysdeps/unix/sysv/linux/i386/dl-librecon.h: Likewise.
* elf/dl-depsc: Likewise. Add new parameter to _dl_map_object.
* elf/dl-fini.c: Call destructors in all namespaces.
* elf/dl-iteratephdr.c: Compute total nloaded. Adjust for removal of
GL(dl_loaded).
* elf/dl-libc.c: Pass new parameter to _dl_open. Adjust for removal
of GL(dl_loaded).
* elf/dl-load.c (_dl_map_object_from_fd): Don't load ld.so a second
time. Reuse the one from the main namespace in all others.
Pass new parameter to _dl_new_object.
Adjust for removal of GL(dl_loaded).
* elf/dl-object.c: Take new parameter. Use it to initialize l_ns.
Adjust for removal of GL(dl_loaded).
* elf/dl-open.c (_dl_open): Take new parameter.
Adjust for removal of GL(dl_loaded).
* elf/dl-support.c: Replace global _dl_loaded etc variables with
_dl_ns variable.
* include/dlfcn.h: Adjust prototype of _dl_open.
Define __LM_ID_CALLER.
* include/link.h: Add l_real, l_ns, and l_direct_opencount elements.
* sysdeps/generic/dl-tls.c: Bump TLS_STATIC_SURPLUS. Since libc is
using TLS we need memory appropriate to the number of namespaces.
* sysdeps/generic/ldsodefs.h (struct rtld_global): Replace _dl_loaded,
_dl_nloaded, _dl_global_scope, _dl_main_searchlist, and
_dl_global_scope_alloc with _dl_ns element. Define DL_NNS.
Adjust prototypes of _dl_map_object and member in rtld_global_ro.
* malloc/malloc.c: Include <dlfcn.h>.
* malloc/arena.c (ptmalloc_init): If libc is not in primary namespace,
never use brk.
* elf/Makefile: Add rules to build and run tst-dlmopen1 and
tst-dlmopen2.
* elf/tst-dlmopen1.c: New file.
* elf/tst-dlmopen1mod.c: New file.
* elf/tst-dlmopen2.c: New file.
* elf/dl-close.c: Improve reference counting by tracking direct loads.
* elf/dl-lookup.c (add_dependency): Likewise.
* elf/dl-open.c (dl_open_worker): Likewise.
* elf/rtld.c (dl_main): Likewise.
2004-09-09 GOTO Masanori <gotom@debian.or.jp>
[BZ #77]
* elf/dl-close.c: Count down l_opencount to check not only for
l_reldeps, but also l_initfini.
2004-10-13 Ulrich Drepper <drepper@redhat.com>
2004-10-14 02:08:23 +00:00
|
|
|
if (dst != NULL || args->nsid == __LM_ID_CALLER
|
|
|
|
|| strchr (file, '/') == NULL)
|
1999-05-05 23:29:18 +00:00
|
|
|
{
|
2004-03-05 03:47:38 +00:00
|
|
|
const void *caller_dlopen = args->caller_dlopen;
|
1999-07-23 22:58:50 +00:00
|
|
|
|
[BZ #77]
Update.
Add support for namespaces in the dynamic linker.
* dlfcn/Makefile (libdl-routines): Add dlmopen.
* dlfcn/Versions [libdl, GLIBC_2.3.4]: Add dlmopen.
* dlfcn/dlfcn.h: Define Lmid_t, LM_ID_BASE, and LM_ID_NEWLM.
Declare dlmopen. Document RTLD_DI_LMID.
* dlfcn/dlinfo.c: Handle RTLD_DI_LMID.
* dlfcn/dlmopen.c: New file.
* dlfcn/dlopen.c: Pass new parameter to _dl_open.
* dlfcn/dlopenold.c: Likewise.
* elf/dl-addr.c: Adjust for removal of GL(dl_loaded).
* elf/dl-caller.c: Likewise.
* elf/dl-close.c: Likewise.
* elf/dl-conflict.c: Likewise.
* elf/dl-debug.c: Likewise.
* elf/dl-lookup.c: Likewise.
* elf/dl-sym.c: Likewise.
* elf/dl-version.c: Likewise.
* elf/do-lookup.h: Likewise.
* elf/rtld.c: Likewise.
* sysdeps/unix/sysv/linux/i386/dl-librecon.h: Likewise.
* elf/dl-depsc: Likewise. Add new parameter to _dl_map_object.
* elf/dl-fini.c: Call destructors in all namespaces.
* elf/dl-iteratephdr.c: Compute total nloaded. Adjust for removal of
GL(dl_loaded).
* elf/dl-libc.c: Pass new parameter to _dl_open. Adjust for removal
of GL(dl_loaded).
* elf/dl-load.c (_dl_map_object_from_fd): Don't load ld.so a second
time. Reuse the one from the main namespace in all others.
Pass new parameter to _dl_new_object.
Adjust for removal of GL(dl_loaded).
* elf/dl-object.c: Take new parameter. Use it to initialize l_ns.
Adjust for removal of GL(dl_loaded).
* elf/dl-open.c (_dl_open): Take new parameter.
Adjust for removal of GL(dl_loaded).
* elf/dl-support.c: Replace global _dl_loaded etc variables with
_dl_ns variable.
* include/dlfcn.h: Adjust prototype of _dl_open.
Define __LM_ID_CALLER.
* include/link.h: Add l_real, l_ns, and l_direct_opencount elements.
* sysdeps/generic/dl-tls.c: Bump TLS_STATIC_SURPLUS. Since libc is
using TLS we need memory appropriate to the number of namespaces.
* sysdeps/generic/ldsodefs.h (struct rtld_global): Replace _dl_loaded,
_dl_nloaded, _dl_global_scope, _dl_main_searchlist, and
_dl_global_scope_alloc with _dl_ns element. Define DL_NNS.
Adjust prototypes of _dl_map_object and member in rtld_global_ro.
* malloc/malloc.c: Include <dlfcn.h>.
* malloc/arena.c (ptmalloc_init): If libc is not in primary namespace,
never use brk.
* elf/Makefile: Add rules to build and run tst-dlmopen1 and
tst-dlmopen2.
* elf/tst-dlmopen1.c: New file.
* elf/tst-dlmopen1mod.c: New file.
* elf/tst-dlmopen2.c: New file.
* elf/dl-close.c: Improve reference counting by tracking direct loads.
* elf/dl-lookup.c (add_dependency): Likewise.
* elf/dl-open.c (dl_open_worker): Likewise.
* elf/rtld.c (dl_main): Likewise.
2004-09-09 GOTO Masanori <gotom@debian.or.jp>
[BZ #77]
* elf/dl-close.c: Count down l_opencount to check not only for
l_reldeps, but also l_initfini.
2004-10-13 Ulrich Drepper <drepper@redhat.com>
2004-10-14 02:08:23 +00:00
|
|
|
/* We have to find out from which object the caller is calling.
|
|
|
|
By default we assume this is the main application. */
|
|
|
|
call_map = GL(dl_ns)[LM_ID_BASE]._ns_loaded;
|
1999-05-05 23:29:18 +00:00
|
|
|
|
2013-02-18 12:30:17 +00:00
|
|
|
struct link_map *l = _dl_find_dso_for_object ((ElfW(Addr)) caller_dlopen);
|
|
|
|
|
|
|
|
if (l)
|
2015-04-17 19:11:58 +00:00
|
|
|
call_map = l;
|
2013-02-18 12:30:17 +00:00
|
|
|
|
[BZ #77]
Update.
Add support for namespaces in the dynamic linker.
* dlfcn/Makefile (libdl-routines): Add dlmopen.
* dlfcn/Versions [libdl, GLIBC_2.3.4]: Add dlmopen.
* dlfcn/dlfcn.h: Define Lmid_t, LM_ID_BASE, and LM_ID_NEWLM.
Declare dlmopen. Document RTLD_DI_LMID.
* dlfcn/dlinfo.c: Handle RTLD_DI_LMID.
* dlfcn/dlmopen.c: New file.
* dlfcn/dlopen.c: Pass new parameter to _dl_open.
* dlfcn/dlopenold.c: Likewise.
* elf/dl-addr.c: Adjust for removal of GL(dl_loaded).
* elf/dl-caller.c: Likewise.
* elf/dl-close.c: Likewise.
* elf/dl-conflict.c: Likewise.
* elf/dl-debug.c: Likewise.
* elf/dl-lookup.c: Likewise.
* elf/dl-sym.c: Likewise.
* elf/dl-version.c: Likewise.
* elf/do-lookup.h: Likewise.
* elf/rtld.c: Likewise.
* sysdeps/unix/sysv/linux/i386/dl-librecon.h: Likewise.
* elf/dl-depsc: Likewise. Add new parameter to _dl_map_object.
* elf/dl-fini.c: Call destructors in all namespaces.
* elf/dl-iteratephdr.c: Compute total nloaded. Adjust for removal of
GL(dl_loaded).
* elf/dl-libc.c: Pass new parameter to _dl_open. Adjust for removal
of GL(dl_loaded).
* elf/dl-load.c (_dl_map_object_from_fd): Don't load ld.so a second
time. Reuse the one from the main namespace in all others.
Pass new parameter to _dl_new_object.
Adjust for removal of GL(dl_loaded).
* elf/dl-object.c: Take new parameter. Use it to initialize l_ns.
Adjust for removal of GL(dl_loaded).
* elf/dl-open.c (_dl_open): Take new parameter.
Adjust for removal of GL(dl_loaded).
* elf/dl-support.c: Replace global _dl_loaded etc variables with
_dl_ns variable.
* include/dlfcn.h: Adjust prototype of _dl_open.
Define __LM_ID_CALLER.
* include/link.h: Add l_real, l_ns, and l_direct_opencount elements.
* sysdeps/generic/dl-tls.c: Bump TLS_STATIC_SURPLUS. Since libc is
using TLS we need memory appropriate to the number of namespaces.
* sysdeps/generic/ldsodefs.h (struct rtld_global): Replace _dl_loaded,
_dl_nloaded, _dl_global_scope, _dl_main_searchlist, and
_dl_global_scope_alloc with _dl_ns element. Define DL_NNS.
Adjust prototypes of _dl_map_object and member in rtld_global_ro.
* malloc/malloc.c: Include <dlfcn.h>.
* malloc/arena.c (ptmalloc_init): If libc is not in primary namespace,
never use brk.
* elf/Makefile: Add rules to build and run tst-dlmopen1 and
tst-dlmopen2.
* elf/tst-dlmopen1.c: New file.
* elf/tst-dlmopen1mod.c: New file.
* elf/tst-dlmopen2.c: New file.
* elf/dl-close.c: Improve reference counting by tracking direct loads.
* elf/dl-lookup.c (add_dependency): Likewise.
* elf/dl-open.c (dl_open_worker): Likewise.
* elf/rtld.c (dl_main): Likewise.
2004-09-09 GOTO Masanori <gotom@debian.or.jp>
[BZ #77]
* elf/dl-close.c: Count down l_opencount to check not only for
l_reldeps, but also l_initfini.
2004-10-13 Ulrich Drepper <drepper@redhat.com>
2004-10-14 02:08:23 +00:00
|
|
|
if (args->nsid == __LM_ID_CALLER)
|
2013-06-28 15:20:26 +00:00
|
|
|
args->nsid = call_map->l_ns;
|
2004-08-09 06:41:04 +00:00
|
|
|
}
|
|
|
|
|
elf: Implement __libc_early_init
This function is defined in libc.so, and the dynamic loader calls
right after relocation has been finished, before any ELF constructors
or the preinit function is invoked. It is also used in the static
build for initializing parts of the static libc.
To locate __libc_early_init, a direct symbol lookup function is used,
_dl_lookup_direct. It does not search the entire symbol scope and
consults merely a single link map. This function could also be used
to implement lookups in the vDSO (as an optimization).
A per-namespace variable (libc_map) is added for locating libc.so,
to avoid repeated traversals of the search scope. It is similar to
GL(dl_initfirst). An alternative would have been to thread a context
argument from _dl_open down to _dl_map_object_from_fd (where libc.so
is identified). This could have avoided the global variable, but
the change would be larger as a result. It would not have been
possible to use this to replace GL(dl_initfirst) because that global
variable is used to pass the function pointer past the stack switch
from dl_main to the main program. Replacing that requires adding
a new argument to _dl_init, which in turn needs changes to the
architecture-specific libc.so startup code written in assembler.
__libc_early_init should not be used to replace _dl_var_init (as
it exists today on some architectures). Instead, _dl_lookup_direct
should be used to look up a new variable symbol in libc.so, and
that should then be initialized from the dynamic loader, immediately
after the object has been loaded in _dl_map_object_from_fd (before
relocation is run). This way, more IFUNC resolvers which depend on
these variables will work.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
2020-04-24 20:31:15 +00:00
|
|
|
/* The namespace ID is now known. Keep track of whether libc.so was
|
|
|
|
already loaded, to determine whether it is necessary to call the
|
|
|
|
early initialization routine (or clear libc_map on error). */
|
|
|
|
args->libc_already_loaded = GL(dl_ns)[args->nsid].libc_map != NULL;
|
|
|
|
|
Avoid late failure in dlopen in global scope update [BZ #25112]
The call to add_to_global in dl_open_worker happens after running ELF
constructors for new objects. At this point, proper recovery from
malloc failure would be quite complicated: We would have to run the
ELF destructors and close all opened objects, something that we
currently do not do.
Instead, this change splits add_to_global into two phases,
add_to_global_resize (which can raise an exception, called before ELF
constructors run), and add_to_global_update (which cannot, called
after ELF constructors). A complication arises due to recursive
dlopen: After the inner dlopen consumes some space, the pre-allocation
in the outer dlopen may no longer be sufficient. A new member in the
namespace structure, _ns_global_scope_pending_adds keeps track of the
maximum number of objects that need to be added to the global scope.
This enables the inner add_to_global_resize call to take into account
the needs of an outer dlopen.
Most code in the dynamic linker assumes that the number of global
scope entries fits into an unsigned int (matching the r_nlist member
of struct r_scop_elem). Therefore, change the type of
_ns_global_scope_alloc to unsigned int (from size_t), and add overflow
checks.
Change-Id: Ie08e2f318510d5a6a4bcb1c315f46791b5b77524
2019-10-31 17:25:39 +00:00
|
|
|
/* Retain the old value, so that it can be restored. */
|
|
|
|
args->original_global_scope_pending_adds
|
|
|
|
= GL (dl_ns)[args->nsid]._ns_global_scope_pending_adds;
|
|
|
|
|
2015-01-21 06:51:10 +00:00
|
|
|
/* One might be tempted to assert that we are RT_CONSISTENT at this point, but that
|
|
|
|
may not be true if this is a recursive call to dlopen. */
|
|
|
|
_dl_debug_initialize (0, args->nsid);
|
2005-01-09 08:29:25 +00:00
|
|
|
|
Mon Jun 10 06:14:03 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* sysdeps/mach/hurd/dl-sysdep.c (__open): Define this instead of open.
(__close, __mmap): Likewise define with __ names now.
Mon Jun 10 05:13:18 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* elf/dl-support.c: New file.
* elf/Makefile (CFLAGS-dl-support.c): New variable.
(routines, elide-routines.so): Add dl-support.
* elf/dl-minimal.c (_dl_pagesize): Remove common defn.
* elf/dl-load.c (_dl_pagesize): Define it here.
(_dl_map_object_from_fd): Initialize it if zero.
* elf/link.h (_dl_pagesize): Remove const.
Sun Jun 9 04:04:26 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* elf/Makefile (routines): Add dl-symbol.
* elf/dl-lookup.c (_dl_symbol_value): Moved to ...
* elf/dl-symbol.c: New file.
* elf/elf.h (Elf32_Xword, Elf32_Sxword): New types.
(Elf32_Section, Elf64_Section): New types, 16 bits.
(Elf32_Sym, Elf64_Sym): Use it.
* elf/dl-deps.c (_dl_open): Moved to ...
* elf/dl-open.c: New file.
* Makefile (routines): Add dl-open.
* elf/Makefile (dl-routines): New variable.
(routines): Add $(dl-routines).
(elide-routines.so): New variable, set to $(dl-routines).
(libdl-inhibit-o): Variable removed; build all flavors of -ldl.
(rtld-routines): All but rtld, dl-sysdep, and dl-minimal moved to
$(dl-routines).
* elf/dl-lookup.c (_dl_lookup_symbol): Remove magic symbol grokage.
* elf/dladdr.c: Use ELFW(ST_BIND) in place of ELF32_ST_BIND.
* elf/dl-load.c (open_path): Use __ names for open and close. Avoid
using strdup.
(_dl_map_object): Likewise.
(_dl_map_object_from_fd): Use __ names for mmap, munmap, and mprotect.
* elf/dl-minimal.c (malloc): Likewise.
* elf/dl-reloc.c (_dl_relocate_object): Likewise.
* elf/dl-minimal.c (_dl_pagesize): New variable.
(malloc): Use that instead of a static variable.
* elf/dl-reloc.c (_dl_relocate_object): Use _dl_pagesize instead of
calling getpagesize.
* elf/dl-load.c (_dl_map_object_from_fd): Likewise.
* elf/link.h: Declare _dl_pagesize.
* elf/rtld.c (dl_r_debug): Renamed to _dl_r_debug.
* elf/link.h (struct link_map): Use Half for l_phnum instead of Word.
* elf/rtld.c (dl_main): Use Half for phdr count arg.
(_dl_sysdep_start): Update prototype of DL_MAIN function ptr arg.
* elf/dl-load.c (_dl_map_object_from_fd): Use explicit Elf32_Word to
extract 4-byte magic number, not ElfW(Word). Match EI_CLASS against
native wordsize, either 32 or 64.
* elf/elf.h (Elf64_Byte, Elf64_Section): Typedefs removed. In C a
char is always a byte, no need for a typedef. Section indices are
16-bit quantities in elf64, which already have a typedef Elf64_Half.
Remove partial -lelf implementation. There is now a
separately-distributed `libelf' package that implements it.
* elf/dl-lookup.c: Don't #include <libelf.h> any more.
(_dl_elf_hash): New function, moved from
libelf.h:elf_hash.
(_dl_lookup_symbol): Use it instead of elf_hash.
* elf/libelf.h: File removed.
* elf/elf_hash.c: File removed.
* elf/Makefile (headers): Remove libelf.h.
(extra-libs): Remove libelf.
(libelf-routines): Variable removed.
* elf/Makefile (libdl.so): Remove commands from this target. The
implicit rule commands are correct, this explicit rule just serves to
add some dependencies.
* elf/dl-lookup.c (_dl_lookup_symbol): Use ELFW(ST_TYPE) in place of
ELF32_ST_TYPE. Likewise ST_BIND.
* elf/do-rel.h (elf_dynamic_do_rel): Likewise R_SYM.
* elf/link.h (ElfW): New macro for wordsize-independent ElfXX_* type
naming.
(ELFW): New macro, likewise for ELFXX_* macro naming.
(_ElfW, _ElfW_1): New macros, subroutines of ElfW and ELF.
Sat Jun 8 20:52:38 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* elf/link.h, elf/do-rel.h, elf/dynamic-link.h, elf/dl-deps.c,
elf/dl-init.c, elf/dl-load.c, elf/dl-lookup.c, elf/dl-reloc.c,
elf/dl-runtime.c, elf/dladdr.c, elf/dlclose.c, elf/dlsym.c,
elf/linux-compat.c, elf/rtld.c: Change all uses of `Elf32_XXX' to
`ElfW(XXX)' for wordsize-independence.
Sat Jun 8 20:50:42 1996 Richard Henderson <rth@tamu.edu>
* elf/elf.h: Move Elf64_* types in parity with Elf32 counterparts.
(Elf64_auxv_t): New type.
(EM_ALPHA, R_ALPHA_*): New macros for elf64-alpha format.
1996-06-10 10:18:47 +00:00
|
|
|
/* Load the named object. */
|
2009-04-01 00:26:36 +00:00
|
|
|
struct link_map *new;
|
2010-10-25 01:43:15 +00:00
|
|
|
args->map = new = _dl_map_object (call_map, file, lt_loaded, 0,
|
2005-01-06 22:40:27 +00:00
|
|
|
mode | __RTLD_CALLMAP, args->nsid);
|
2000-07-20 22:53:54 +00:00
|
|
|
|
|
|
|
/* If the pointer returned is NULL this means the RTLD_NOLOAD flag is
|
|
|
|
set and the object is not already loaded. */
|
|
|
|
if (new == NULL)
|
|
|
|
{
|
|
|
|
assert (mode & RTLD_NOLOAD);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2014-02-10 13:45:42 +00:00
|
|
|
if (__glibc_unlikely (mode & __RTLD_SPROF))
|
2019-12-13 09:23:10 +00:00
|
|
|
/* This happens only if we load a DSO for 'sprof'. */
|
|
|
|
return;
|
2001-09-23 02:10:30 +00:00
|
|
|
|
[BZ #77]
Update.
Add support for namespaces in the dynamic linker.
* dlfcn/Makefile (libdl-routines): Add dlmopen.
* dlfcn/Versions [libdl, GLIBC_2.3.4]: Add dlmopen.
* dlfcn/dlfcn.h: Define Lmid_t, LM_ID_BASE, and LM_ID_NEWLM.
Declare dlmopen. Document RTLD_DI_LMID.
* dlfcn/dlinfo.c: Handle RTLD_DI_LMID.
* dlfcn/dlmopen.c: New file.
* dlfcn/dlopen.c: Pass new parameter to _dl_open.
* dlfcn/dlopenold.c: Likewise.
* elf/dl-addr.c: Adjust for removal of GL(dl_loaded).
* elf/dl-caller.c: Likewise.
* elf/dl-close.c: Likewise.
* elf/dl-conflict.c: Likewise.
* elf/dl-debug.c: Likewise.
* elf/dl-lookup.c: Likewise.
* elf/dl-sym.c: Likewise.
* elf/dl-version.c: Likewise.
* elf/do-lookup.h: Likewise.
* elf/rtld.c: Likewise.
* sysdeps/unix/sysv/linux/i386/dl-librecon.h: Likewise.
* elf/dl-depsc: Likewise. Add new parameter to _dl_map_object.
* elf/dl-fini.c: Call destructors in all namespaces.
* elf/dl-iteratephdr.c: Compute total nloaded. Adjust for removal of
GL(dl_loaded).
* elf/dl-libc.c: Pass new parameter to _dl_open. Adjust for removal
of GL(dl_loaded).
* elf/dl-load.c (_dl_map_object_from_fd): Don't load ld.so a second
time. Reuse the one from the main namespace in all others.
Pass new parameter to _dl_new_object.
Adjust for removal of GL(dl_loaded).
* elf/dl-object.c: Take new parameter. Use it to initialize l_ns.
Adjust for removal of GL(dl_loaded).
* elf/dl-open.c (_dl_open): Take new parameter.
Adjust for removal of GL(dl_loaded).
* elf/dl-support.c: Replace global _dl_loaded etc variables with
_dl_ns variable.
* include/dlfcn.h: Adjust prototype of _dl_open.
Define __LM_ID_CALLER.
* include/link.h: Add l_real, l_ns, and l_direct_opencount elements.
* sysdeps/generic/dl-tls.c: Bump TLS_STATIC_SURPLUS. Since libc is
using TLS we need memory appropriate to the number of namespaces.
* sysdeps/generic/ldsodefs.h (struct rtld_global): Replace _dl_loaded,
_dl_nloaded, _dl_global_scope, _dl_main_searchlist, and
_dl_global_scope_alloc with _dl_ns element. Define DL_NNS.
Adjust prototypes of _dl_map_object and member in rtld_global_ro.
* malloc/malloc.c: Include <dlfcn.h>.
* malloc/arena.c (ptmalloc_init): If libc is not in primary namespace,
never use brk.
* elf/Makefile: Add rules to build and run tst-dlmopen1 and
tst-dlmopen2.
* elf/tst-dlmopen1.c: New file.
* elf/tst-dlmopen1mod.c: New file.
* elf/tst-dlmopen2.c: New file.
* elf/dl-close.c: Improve reference counting by tracking direct loads.
* elf/dl-lookup.c (add_dependency): Likewise.
* elf/dl-open.c (dl_open_worker): Likewise.
* elf/rtld.c (dl_main): Likewise.
2004-09-09 GOTO Masanori <gotom@debian.or.jp>
[BZ #77]
* elf/dl-close.c: Count down l_opencount to check not only for
l_reldeps, but also l_initfini.
2004-10-13 Ulrich Drepper <drepper@redhat.com>
2004-10-14 02:08:23 +00:00
|
|
|
/* This object is directly loaded. */
|
|
|
|
++new->l_direct_opencount;
|
|
|
|
|
2000-10-24 07:36:55 +00:00
|
|
|
/* It was already open. */
|
2014-02-10 13:45:42 +00:00
|
|
|
if (__glibc_unlikely (new->l_searchlist.r_list != NULL))
|
2000-08-28 08:32:23 +00:00
|
|
|
{
|
|
|
|
/* Let the user know about the opencount. */
|
2014-02-10 13:45:42 +00:00
|
|
|
if (__glibc_unlikely (GLRO(dl_debug_mask) & DL_DEBUG_FILES))
|
2005-03-18 11:11:42 +00:00
|
|
|
_dl_debug_printf ("opening file=%s [%lu]; direct_opencount=%u\n\n",
|
2005-03-19 07:51:35 +00:00
|
|
|
new->l_name, new->l_ns, new->l_direct_opencount);
|
2000-10-21 07:16:18 +00:00
|
|
|
|
2019-11-13 14:44:56 +00:00
|
|
|
/* If the user requested the object to be in the global
|
|
|
|
namespace but it is not so far, prepare to add it now. This
|
|
|
|
can raise an exception to do a malloc failure. */
|
2000-10-21 07:16:18 +00:00
|
|
|
if ((mode & RTLD_GLOBAL) && new->l_global == 0)
|
2019-11-13 14:44:56 +00:00
|
|
|
add_to_global_resize (new);
|
|
|
|
|
|
|
|
/* Mark the object as not deletable if the RTLD_NODELETE flags
|
|
|
|
was passed. */
|
|
|
|
if (__glibc_unlikely (mode & RTLD_NODELETE))
|
Avoid late failure in dlopen in global scope update [BZ #25112]
The call to add_to_global in dl_open_worker happens after running ELF
constructors for new objects. At this point, proper recovery from
malloc failure would be quite complicated: We would have to run the
ELF destructors and close all opened objects, something that we
currently do not do.
Instead, this change splits add_to_global into two phases,
add_to_global_resize (which can raise an exception, called before ELF
constructors run), and add_to_global_update (which cannot, called
after ELF constructors). A complication arises due to recursive
dlopen: After the inner dlopen consumes some space, the pre-allocation
in the outer dlopen may no longer be sufficient. A new member in the
namespace structure, _ns_global_scope_pending_adds keeps track of the
maximum number of objects that need to be added to the global scope.
This enables the inner add_to_global_resize call to take into account
the needs of an outer dlopen.
Most code in the dynamic linker assumes that the number of global
scope entries fits into an unsigned int (matching the r_nlist member
of struct r_scop_elem). Therefore, change the type of
_ns_global_scope_alloc to unsigned int (from size_t), and add overflow
checks.
Change-Id: Ie08e2f318510d5a6a4bcb1c315f46791b5b77524
2019-10-31 17:25:39 +00:00
|
|
|
{
|
2019-11-13 14:44:56 +00:00
|
|
|
if (__glibc_unlikely (GLRO (dl_debug_mask) & DL_DEBUG_FILES)
|
2019-12-13 09:18:46 +00:00
|
|
|
&& !new->l_nodelete_active)
|
2019-11-13 14:44:56 +00:00
|
|
|
_dl_debug_printf ("marking %s [%lu] as NODELETE\n",
|
|
|
|
new->l_name, new->l_ns);
|
2019-12-13 09:18:46 +00:00
|
|
|
new->l_nodelete_active = true;
|
Avoid late failure in dlopen in global scope update [BZ #25112]
The call to add_to_global in dl_open_worker happens after running ELF
constructors for new objects. At this point, proper recovery from
malloc failure would be quite complicated: We would have to run the
ELF destructors and close all opened objects, something that we
currently do not do.
Instead, this change splits add_to_global into two phases,
add_to_global_resize (which can raise an exception, called before ELF
constructors run), and add_to_global_update (which cannot, called
after ELF constructors). A complication arises due to recursive
dlopen: After the inner dlopen consumes some space, the pre-allocation
in the outer dlopen may no longer be sufficient. A new member in the
namespace structure, _ns_global_scope_pending_adds keeps track of the
maximum number of objects that need to be added to the global scope.
This enables the inner add_to_global_resize call to take into account
the needs of an outer dlopen.
Most code in the dynamic linker assumes that the number of global
scope entries fits into an unsigned int (matching the r_nlist member
of struct r_scop_elem). Therefore, change the type of
_ns_global_scope_alloc to unsigned int (from size_t), and add overflow
checks.
Change-Id: Ie08e2f318510d5a6a4bcb1c315f46791b5b77524
2019-10-31 17:25:39 +00:00
|
|
|
}
|
2000-10-21 07:16:18 +00:00
|
|
|
|
2019-11-13 14:44:56 +00:00
|
|
|
/* Finalize the addition to the global scope. */
|
|
|
|
if ((mode & RTLD_GLOBAL) && new->l_global == 0)
|
|
|
|
add_to_global_update (new);
|
|
|
|
|
2023-03-25 21:27:01 +00:00
|
|
|
const int r_state __attribute__ ((unused))
|
|
|
|
= _dl_debug_update (args->nsid)->r_state;
|
|
|
|
assert (r_state == RT_CONSISTENT);
|
2005-01-06 22:40:27 +00:00
|
|
|
|
2000-08-28 08:32:23 +00:00
|
|
|
return;
|
|
|
|
}
|
Mon Jun 10 06:14:03 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* sysdeps/mach/hurd/dl-sysdep.c (__open): Define this instead of open.
(__close, __mmap): Likewise define with __ names now.
Mon Jun 10 05:13:18 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* elf/dl-support.c: New file.
* elf/Makefile (CFLAGS-dl-support.c): New variable.
(routines, elide-routines.so): Add dl-support.
* elf/dl-minimal.c (_dl_pagesize): Remove common defn.
* elf/dl-load.c (_dl_pagesize): Define it here.
(_dl_map_object_from_fd): Initialize it if zero.
* elf/link.h (_dl_pagesize): Remove const.
Sun Jun 9 04:04:26 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* elf/Makefile (routines): Add dl-symbol.
* elf/dl-lookup.c (_dl_symbol_value): Moved to ...
* elf/dl-symbol.c: New file.
* elf/elf.h (Elf32_Xword, Elf32_Sxword): New types.
(Elf32_Section, Elf64_Section): New types, 16 bits.
(Elf32_Sym, Elf64_Sym): Use it.
* elf/dl-deps.c (_dl_open): Moved to ...
* elf/dl-open.c: New file.
* Makefile (routines): Add dl-open.
* elf/Makefile (dl-routines): New variable.
(routines): Add $(dl-routines).
(elide-routines.so): New variable, set to $(dl-routines).
(libdl-inhibit-o): Variable removed; build all flavors of -ldl.
(rtld-routines): All but rtld, dl-sysdep, and dl-minimal moved to
$(dl-routines).
* elf/dl-lookup.c (_dl_lookup_symbol): Remove magic symbol grokage.
* elf/dladdr.c: Use ELFW(ST_BIND) in place of ELF32_ST_BIND.
* elf/dl-load.c (open_path): Use __ names for open and close. Avoid
using strdup.
(_dl_map_object): Likewise.
(_dl_map_object_from_fd): Use __ names for mmap, munmap, and mprotect.
* elf/dl-minimal.c (malloc): Likewise.
* elf/dl-reloc.c (_dl_relocate_object): Likewise.
* elf/dl-minimal.c (_dl_pagesize): New variable.
(malloc): Use that instead of a static variable.
* elf/dl-reloc.c (_dl_relocate_object): Use _dl_pagesize instead of
calling getpagesize.
* elf/dl-load.c (_dl_map_object_from_fd): Likewise.
* elf/link.h: Declare _dl_pagesize.
* elf/rtld.c (dl_r_debug): Renamed to _dl_r_debug.
* elf/link.h (struct link_map): Use Half for l_phnum instead of Word.
* elf/rtld.c (dl_main): Use Half for phdr count arg.
(_dl_sysdep_start): Update prototype of DL_MAIN function ptr arg.
* elf/dl-load.c (_dl_map_object_from_fd): Use explicit Elf32_Word to
extract 4-byte magic number, not ElfW(Word). Match EI_CLASS against
native wordsize, either 32 or 64.
* elf/elf.h (Elf64_Byte, Elf64_Section): Typedefs removed. In C a
char is always a byte, no need for a typedef. Section indices are
16-bit quantities in elf64, which already have a typedef Elf64_Half.
Remove partial -lelf implementation. There is now a
separately-distributed `libelf' package that implements it.
* elf/dl-lookup.c: Don't #include <libelf.h> any more.
(_dl_elf_hash): New function, moved from
libelf.h:elf_hash.
(_dl_lookup_symbol): Use it instead of elf_hash.
* elf/libelf.h: File removed.
* elf/elf_hash.c: File removed.
* elf/Makefile (headers): Remove libelf.h.
(extra-libs): Remove libelf.
(libelf-routines): Variable removed.
* elf/Makefile (libdl.so): Remove commands from this target. The
implicit rule commands are correct, this explicit rule just serves to
add some dependencies.
* elf/dl-lookup.c (_dl_lookup_symbol): Use ELFW(ST_TYPE) in place of
ELF32_ST_TYPE. Likewise ST_BIND.
* elf/do-rel.h (elf_dynamic_do_rel): Likewise R_SYM.
* elf/link.h (ElfW): New macro for wordsize-independent ElfXX_* type
naming.
(ELFW): New macro, likewise for ELFXX_* macro naming.
(_ElfW, _ElfW_1): New macros, subroutines of ElfW and ELF.
Sat Jun 8 20:52:38 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* elf/link.h, elf/do-rel.h, elf/dynamic-link.h, elf/dl-deps.c,
elf/dl-init.c, elf/dl-load.c, elf/dl-lookup.c, elf/dl-reloc.c,
elf/dl-runtime.c, elf/dladdr.c, elf/dlclose.c, elf/dlsym.c,
elf/linux-compat.c, elf/rtld.c: Change all uses of `Elf32_XXX' to
`ElfW(XXX)' for wordsize-independence.
Sat Jun 8 20:50:42 1996 Richard Henderson <rth@tamu.edu>
* elf/elf.h: Move Elf64_* types in parity with Elf32 counterparts.
(Elf64_auxv_t): New type.
(EM_ALPHA, R_ALPHA_*): New macros for elf64-alpha format.
1996-06-10 10:18:47 +00:00
|
|
|
|
2019-11-13 14:44:56 +00:00
|
|
|
/* Schedule NODELETE marking for the directly loaded object if
|
|
|
|
requested. */
|
|
|
|
if (__glibc_unlikely (mode & RTLD_NODELETE))
|
2019-12-13 09:18:46 +00:00
|
|
|
new->l_nodelete_pending = true;
|
2019-11-13 14:44:56 +00:00
|
|
|
|
Mon Jun 10 06:14:03 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* sysdeps/mach/hurd/dl-sysdep.c (__open): Define this instead of open.
(__close, __mmap): Likewise define with __ names now.
Mon Jun 10 05:13:18 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* elf/dl-support.c: New file.
* elf/Makefile (CFLAGS-dl-support.c): New variable.
(routines, elide-routines.so): Add dl-support.
* elf/dl-minimal.c (_dl_pagesize): Remove common defn.
* elf/dl-load.c (_dl_pagesize): Define it here.
(_dl_map_object_from_fd): Initialize it if zero.
* elf/link.h (_dl_pagesize): Remove const.
Sun Jun 9 04:04:26 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* elf/Makefile (routines): Add dl-symbol.
* elf/dl-lookup.c (_dl_symbol_value): Moved to ...
* elf/dl-symbol.c: New file.
* elf/elf.h (Elf32_Xword, Elf32_Sxword): New types.
(Elf32_Section, Elf64_Section): New types, 16 bits.
(Elf32_Sym, Elf64_Sym): Use it.
* elf/dl-deps.c (_dl_open): Moved to ...
* elf/dl-open.c: New file.
* Makefile (routines): Add dl-open.
* elf/Makefile (dl-routines): New variable.
(routines): Add $(dl-routines).
(elide-routines.so): New variable, set to $(dl-routines).
(libdl-inhibit-o): Variable removed; build all flavors of -ldl.
(rtld-routines): All but rtld, dl-sysdep, and dl-minimal moved to
$(dl-routines).
* elf/dl-lookup.c (_dl_lookup_symbol): Remove magic symbol grokage.
* elf/dladdr.c: Use ELFW(ST_BIND) in place of ELF32_ST_BIND.
* elf/dl-load.c (open_path): Use __ names for open and close. Avoid
using strdup.
(_dl_map_object): Likewise.
(_dl_map_object_from_fd): Use __ names for mmap, munmap, and mprotect.
* elf/dl-minimal.c (malloc): Likewise.
* elf/dl-reloc.c (_dl_relocate_object): Likewise.
* elf/dl-minimal.c (_dl_pagesize): New variable.
(malloc): Use that instead of a static variable.
* elf/dl-reloc.c (_dl_relocate_object): Use _dl_pagesize instead of
calling getpagesize.
* elf/dl-load.c (_dl_map_object_from_fd): Likewise.
* elf/link.h: Declare _dl_pagesize.
* elf/rtld.c (dl_r_debug): Renamed to _dl_r_debug.
* elf/link.h (struct link_map): Use Half for l_phnum instead of Word.
* elf/rtld.c (dl_main): Use Half for phdr count arg.
(_dl_sysdep_start): Update prototype of DL_MAIN function ptr arg.
* elf/dl-load.c (_dl_map_object_from_fd): Use explicit Elf32_Word to
extract 4-byte magic number, not ElfW(Word). Match EI_CLASS against
native wordsize, either 32 or 64.
* elf/elf.h (Elf64_Byte, Elf64_Section): Typedefs removed. In C a
char is always a byte, no need for a typedef. Section indices are
16-bit quantities in elf64, which already have a typedef Elf64_Half.
Remove partial -lelf implementation. There is now a
separately-distributed `libelf' package that implements it.
* elf/dl-lookup.c: Don't #include <libelf.h> any more.
(_dl_elf_hash): New function, moved from
libelf.h:elf_hash.
(_dl_lookup_symbol): Use it instead of elf_hash.
* elf/libelf.h: File removed.
* elf/elf_hash.c: File removed.
* elf/Makefile (headers): Remove libelf.h.
(extra-libs): Remove libelf.
(libelf-routines): Variable removed.
* elf/Makefile (libdl.so): Remove commands from this target. The
implicit rule commands are correct, this explicit rule just serves to
add some dependencies.
* elf/dl-lookup.c (_dl_lookup_symbol): Use ELFW(ST_TYPE) in place of
ELF32_ST_TYPE. Likewise ST_BIND.
* elf/do-rel.h (elf_dynamic_do_rel): Likewise R_SYM.
* elf/link.h (ElfW): New macro for wordsize-independent ElfXX_* type
naming.
(ELFW): New macro, likewise for ELFXX_* macro naming.
(_ElfW, _ElfW_1): New macros, subroutines of ElfW and ELF.
Sat Jun 8 20:52:38 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* elf/link.h, elf/do-rel.h, elf/dynamic-link.h, elf/dl-deps.c,
elf/dl-init.c, elf/dl-load.c, elf/dl-lookup.c, elf/dl-reloc.c,
elf/dl-runtime.c, elf/dladdr.c, elf/dlclose.c, elf/dlsym.c,
elf/linux-compat.c, elf/rtld.c: Change all uses of `Elf32_XXX' to
`ElfW(XXX)' for wordsize-independence.
Sat Jun 8 20:50:42 1996 Richard Henderson <rth@tamu.edu>
* elf/elf.h: Move Elf64_* types in parity with Elf32 counterparts.
(Elf64_auxv_t): New type.
(EM_ALPHA, R_ALPHA_*): New macros for elf64-alpha format.
1996-06-10 10:18:47 +00:00
|
|
|
/* Load that object's dependencies. */
|
2005-01-06 22:40:27 +00:00
|
|
|
_dl_map_object_deps (new, NULL, 0, 0,
|
2005-01-13 02:08:37 +00:00
|
|
|
mode & (__RTLD_DLOPEN | RTLD_DEEPBIND | __RTLD_AUDIT));
|
Mon Jun 10 06:14:03 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* sysdeps/mach/hurd/dl-sysdep.c (__open): Define this instead of open.
(__close, __mmap): Likewise define with __ names now.
Mon Jun 10 05:13:18 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* elf/dl-support.c: New file.
* elf/Makefile (CFLAGS-dl-support.c): New variable.
(routines, elide-routines.so): Add dl-support.
* elf/dl-minimal.c (_dl_pagesize): Remove common defn.
* elf/dl-load.c (_dl_pagesize): Define it here.
(_dl_map_object_from_fd): Initialize it if zero.
* elf/link.h (_dl_pagesize): Remove const.
Sun Jun 9 04:04:26 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* elf/Makefile (routines): Add dl-symbol.
* elf/dl-lookup.c (_dl_symbol_value): Moved to ...
* elf/dl-symbol.c: New file.
* elf/elf.h (Elf32_Xword, Elf32_Sxword): New types.
(Elf32_Section, Elf64_Section): New types, 16 bits.
(Elf32_Sym, Elf64_Sym): Use it.
* elf/dl-deps.c (_dl_open): Moved to ...
* elf/dl-open.c: New file.
* Makefile (routines): Add dl-open.
* elf/Makefile (dl-routines): New variable.
(routines): Add $(dl-routines).
(elide-routines.so): New variable, set to $(dl-routines).
(libdl-inhibit-o): Variable removed; build all flavors of -ldl.
(rtld-routines): All but rtld, dl-sysdep, and dl-minimal moved to
$(dl-routines).
* elf/dl-lookup.c (_dl_lookup_symbol): Remove magic symbol grokage.
* elf/dladdr.c: Use ELFW(ST_BIND) in place of ELF32_ST_BIND.
* elf/dl-load.c (open_path): Use __ names for open and close. Avoid
using strdup.
(_dl_map_object): Likewise.
(_dl_map_object_from_fd): Use __ names for mmap, munmap, and mprotect.
* elf/dl-minimal.c (malloc): Likewise.
* elf/dl-reloc.c (_dl_relocate_object): Likewise.
* elf/dl-minimal.c (_dl_pagesize): New variable.
(malloc): Use that instead of a static variable.
* elf/dl-reloc.c (_dl_relocate_object): Use _dl_pagesize instead of
calling getpagesize.
* elf/dl-load.c (_dl_map_object_from_fd): Likewise.
* elf/link.h: Declare _dl_pagesize.
* elf/rtld.c (dl_r_debug): Renamed to _dl_r_debug.
* elf/link.h (struct link_map): Use Half for l_phnum instead of Word.
* elf/rtld.c (dl_main): Use Half for phdr count arg.
(_dl_sysdep_start): Update prototype of DL_MAIN function ptr arg.
* elf/dl-load.c (_dl_map_object_from_fd): Use explicit Elf32_Word to
extract 4-byte magic number, not ElfW(Word). Match EI_CLASS against
native wordsize, either 32 or 64.
* elf/elf.h (Elf64_Byte, Elf64_Section): Typedefs removed. In C a
char is always a byte, no need for a typedef. Section indices are
16-bit quantities in elf64, which already have a typedef Elf64_Half.
Remove partial -lelf implementation. There is now a
separately-distributed `libelf' package that implements it.
* elf/dl-lookup.c: Don't #include <libelf.h> any more.
(_dl_elf_hash): New function, moved from
libelf.h:elf_hash.
(_dl_lookup_symbol): Use it instead of elf_hash.
* elf/libelf.h: File removed.
* elf/elf_hash.c: File removed.
* elf/Makefile (headers): Remove libelf.h.
(extra-libs): Remove libelf.
(libelf-routines): Variable removed.
* elf/Makefile (libdl.so): Remove commands from this target. The
implicit rule commands are correct, this explicit rule just serves to
add some dependencies.
* elf/dl-lookup.c (_dl_lookup_symbol): Use ELFW(ST_TYPE) in place of
ELF32_ST_TYPE. Likewise ST_BIND.
* elf/do-rel.h (elf_dynamic_do_rel): Likewise R_SYM.
* elf/link.h (ElfW): New macro for wordsize-independent ElfXX_* type
naming.
(ELFW): New macro, likewise for ELFXX_* macro naming.
(_ElfW, _ElfW_1): New macros, subroutines of ElfW and ELF.
Sat Jun 8 20:52:38 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* elf/link.h, elf/do-rel.h, elf/dynamic-link.h, elf/dl-deps.c,
elf/dl-init.c, elf/dl-load.c, elf/dl-lookup.c, elf/dl-reloc.c,
elf/dl-runtime.c, elf/dladdr.c, elf/dlclose.c, elf/dlsym.c,
elf/linux-compat.c, elf/rtld.c: Change all uses of `Elf32_XXX' to
`ElfW(XXX)' for wordsize-independence.
Sat Jun 8 20:50:42 1996 Richard Henderson <rth@tamu.edu>
* elf/elf.h: Move Elf64_* types in parity with Elf32 counterparts.
(Elf64_auxv_t): New type.
(EM_ALPHA, R_ALPHA_*): New macros for elf64-alpha format.
1996-06-10 10:18:47 +00:00
|
|
|
|
1997-02-15 04:31:36 +00:00
|
|
|
/* So far, so good. Now check the versions. */
|
2009-04-01 00:26:36 +00:00
|
|
|
for (unsigned int i = 0; i < new->l_searchlist.r_nlist; ++i)
|
[BZ #77]
Update.
Add support for namespaces in the dynamic linker.
* dlfcn/Makefile (libdl-routines): Add dlmopen.
* dlfcn/Versions [libdl, GLIBC_2.3.4]: Add dlmopen.
* dlfcn/dlfcn.h: Define Lmid_t, LM_ID_BASE, and LM_ID_NEWLM.
Declare dlmopen. Document RTLD_DI_LMID.
* dlfcn/dlinfo.c: Handle RTLD_DI_LMID.
* dlfcn/dlmopen.c: New file.
* dlfcn/dlopen.c: Pass new parameter to _dl_open.
* dlfcn/dlopenold.c: Likewise.
* elf/dl-addr.c: Adjust for removal of GL(dl_loaded).
* elf/dl-caller.c: Likewise.
* elf/dl-close.c: Likewise.
* elf/dl-conflict.c: Likewise.
* elf/dl-debug.c: Likewise.
* elf/dl-lookup.c: Likewise.
* elf/dl-sym.c: Likewise.
* elf/dl-version.c: Likewise.
* elf/do-lookup.h: Likewise.
* elf/rtld.c: Likewise.
* sysdeps/unix/sysv/linux/i386/dl-librecon.h: Likewise.
* elf/dl-depsc: Likewise. Add new parameter to _dl_map_object.
* elf/dl-fini.c: Call destructors in all namespaces.
* elf/dl-iteratephdr.c: Compute total nloaded. Adjust for removal of
GL(dl_loaded).
* elf/dl-libc.c: Pass new parameter to _dl_open. Adjust for removal
of GL(dl_loaded).
* elf/dl-load.c (_dl_map_object_from_fd): Don't load ld.so a second
time. Reuse the one from the main namespace in all others.
Pass new parameter to _dl_new_object.
Adjust for removal of GL(dl_loaded).
* elf/dl-object.c: Take new parameter. Use it to initialize l_ns.
Adjust for removal of GL(dl_loaded).
* elf/dl-open.c (_dl_open): Take new parameter.
Adjust for removal of GL(dl_loaded).
* elf/dl-support.c: Replace global _dl_loaded etc variables with
_dl_ns variable.
* include/dlfcn.h: Adjust prototype of _dl_open.
Define __LM_ID_CALLER.
* include/link.h: Add l_real, l_ns, and l_direct_opencount elements.
* sysdeps/generic/dl-tls.c: Bump TLS_STATIC_SURPLUS. Since libc is
using TLS we need memory appropriate to the number of namespaces.
* sysdeps/generic/ldsodefs.h (struct rtld_global): Replace _dl_loaded,
_dl_nloaded, _dl_global_scope, _dl_main_searchlist, and
_dl_global_scope_alloc with _dl_ns element. Define DL_NNS.
Adjust prototypes of _dl_map_object and member in rtld_global_ro.
* malloc/malloc.c: Include <dlfcn.h>.
* malloc/arena.c (ptmalloc_init): If libc is not in primary namespace,
never use brk.
* elf/Makefile: Add rules to build and run tst-dlmopen1 and
tst-dlmopen2.
* elf/tst-dlmopen1.c: New file.
* elf/tst-dlmopen1mod.c: New file.
* elf/tst-dlmopen2.c: New file.
* elf/dl-close.c: Improve reference counting by tracking direct loads.
* elf/dl-lookup.c (add_dependency): Likewise.
* elf/dl-open.c (dl_open_worker): Likewise.
* elf/rtld.c (dl_main): Likewise.
2004-09-09 GOTO Masanori <gotom@debian.or.jp>
[BZ #77]
* elf/dl-close.c: Count down l_opencount to check not only for
l_reldeps, but also l_initfini.
2004-10-13 Ulrich Drepper <drepper@redhat.com>
2004-10-14 02:08:23 +00:00
|
|
|
if (new->l_searchlist.r_list[i]->l_real->l_versions == NULL)
|
2021-05-17 07:59:14 +00:00
|
|
|
{
|
|
|
|
struct link_map *map = new->l_searchlist.r_list[i]->l_real;
|
|
|
|
_dl_check_map_versions (map, 0, 0);
|
|
|
|
#ifndef SHARED
|
|
|
|
/* During static dlopen, check if ld.so has been loaded.
|
|
|
|
Perform partial initialization in this case. This must
|
|
|
|
come after the symbol versioning initialization in
|
|
|
|
_dl_check_map_versions. */
|
|
|
|
if (map->l_info[DT_SONAME] != NULL
|
|
|
|
&& strcmp (((const char *) D_PTR (map, l_info[DT_STRTAB])
|
|
|
|
+ map->l_info[DT_SONAME]->d_un.d_val), LD_SO) == 0)
|
|
|
|
__rtld_static_init (map);
|
|
|
|
#endif
|
|
|
|
}
|
1996-06-10 20:19:39 +00:00
|
|
|
|
2005-01-06 22:40:27 +00:00
|
|
|
#ifdef SHARED
|
|
|
|
/* Auditing checkpoint: we have added all objects. */
|
2021-07-20 14:03:34 +00:00
|
|
|
_dl_audit_activity_nsid (new->l_ns, LA_ACT_CONSISTENT);
|
2005-01-06 22:40:27 +00:00
|
|
|
#endif
|
|
|
|
|
|
|
|
/* Notify the debugger all new objects are now ready to go. */
|
2021-08-18 02:35:48 +00:00
|
|
|
struct r_debug *r = _dl_debug_update (args->nsid);
|
2005-01-06 22:40:27 +00:00
|
|
|
r->r_state = RT_CONSISTENT;
|
|
|
|
_dl_debug_state ();
|
2012-07-26 10:03:35 +00:00
|
|
|
LIBC_PROBE (map_complete, 3, args->nsid, r, new);
|
2005-01-06 22:40:27 +00:00
|
|
|
|
2019-10-31 17:48:43 +00:00
|
|
|
_dl_open_check (new);
|
|
|
|
|
2011-08-16 20:11:03 +00:00
|
|
|
/* Print scope information. */
|
2014-02-10 13:45:42 +00:00
|
|
|
if (__glibc_unlikely (GLRO(dl_debug_mask) & DL_DEBUG_SCOPES))
|
2011-08-16 20:11:03 +00:00
|
|
|
_dl_show_scope (new, 0);
|
|
|
|
|
1999-05-11 13:00:20 +00:00
|
|
|
/* Only do lazy relocation if `LD_BIND_NOW' is not set. */
|
2009-03-16 02:16:30 +00:00
|
|
|
int reloc_mode = mode & __RTLD_AUDIT;
|
|
|
|
if (GLRO(dl_lazy))
|
|
|
|
reloc_mode |= mode & RTLD_LAZY;
|
1999-05-11 13:00:20 +00:00
|
|
|
|
2020-02-12 17:30:31 +00:00
|
|
|
/* Objects must be sorted by dependency for the relocation process.
|
|
|
|
This allows IFUNC relocations to work and it also means copy
|
|
|
|
relocation of dependencies are if necessary overwritten.
|
|
|
|
__dl_map_object_deps has already sorted l_initfini for us. */
|
2020-02-12 17:31:17 +00:00
|
|
|
unsigned int first = UINT_MAX;
|
|
|
|
unsigned int last = 0;
|
2020-02-12 17:28:15 +00:00
|
|
|
unsigned int j = 0;
|
|
|
|
struct link_map *l = new->l_initfini[0];
|
2012-01-27 20:05:19 +00:00
|
|
|
do
|
|
|
|
{
|
|
|
|
if (! l->l_real->l_relocated)
|
2020-02-12 17:31:17 +00:00
|
|
|
{
|
|
|
|
if (first == UINT_MAX)
|
|
|
|
first = j;
|
|
|
|
last = j + 1;
|
|
|
|
}
|
2020-02-12 17:28:15 +00:00
|
|
|
l = new->l_initfini[++j];
|
2012-01-27 20:05:19 +00:00
|
|
|
}
|
|
|
|
while (l != NULL);
|
1996-06-10 20:19:39 +00:00
|
|
|
|
2023-11-27 10:28:10 +00:00
|
|
|
bool relocation_in_progress = false;
|
2012-07-26 10:03:35 +00:00
|
|
|
|
2019-11-13 14:44:56 +00:00
|
|
|
/* Perform relocation. This can trigger lazy binding in IFUNC
|
|
|
|
resolvers. For NODELETE mappings, these dependencies are not
|
|
|
|
recorded because the flag has not been applied to the newly
|
|
|
|
loaded objects. This means that upon dlopen failure, these
|
|
|
|
NODELETE objects can be unloaded despite existing references to
|
|
|
|
them. However, such relocation dependencies in IFUNC resolvers
|
|
|
|
are undefined anyway, so this is not a problem. */
|
|
|
|
|
2023-11-27 10:28:13 +00:00
|
|
|
/* Ensure that libc is relocated first. This helps with the
|
|
|
|
execution of IFUNC resolvers in libc, and matters only to newly
|
|
|
|
created dlmopen namespaces. Do not do this for static dlopen
|
|
|
|
because libc has relocations against ld.so, which may not have
|
|
|
|
been relocated at this point. */
|
|
|
|
#ifdef SHARED
|
|
|
|
if (GL(dl_ns)[args->nsid].libc_map != NULL)
|
|
|
|
_dl_open_relocate_one_object (args, r, GL(dl_ns)[args->nsid].libc_map,
|
|
|
|
reloc_mode, &relocation_in_progress);
|
|
|
|
#endif
|
|
|
|
|
2020-02-12 17:31:17 +00:00
|
|
|
for (unsigned int i = last; i-- > first; )
|
2023-11-27 10:28:10 +00:00
|
|
|
_dl_open_relocate_one_object (args, r, new->l_initfini[i], reloc_mode,
|
|
|
|
&relocation_in_progress);
|
1996-06-10 20:19:39 +00:00
|
|
|
|
2019-11-27 15:37:17 +00:00
|
|
|
/* This only performs the memory allocations. The actual update of
|
|
|
|
the scopes happens below, after failure is impossible. */
|
|
|
|
resize_scopes (new);
|
2005-03-18 11:11:42 +00:00
|
|
|
|
2019-11-27 15:37:17 +00:00
|
|
|
/* Increase the size of the GL (dl_tls_dtv_slotinfo_list) data
|
|
|
|
structure. */
|
|
|
|
bool any_tls = resize_tls_slotinfo (new);
|
2006-10-27 15:54:20 +00:00
|
|
|
|
2019-11-27 15:37:17 +00:00
|
|
|
/* Perform the necessary allocations for adding new global objects
|
|
|
|
to the global scope below. */
|
|
|
|
if (mode & RTLD_GLOBAL)
|
|
|
|
add_to_global_resize (new);
|
2014-02-05 11:14:59 +00:00
|
|
|
|
2019-11-27 15:37:17 +00:00
|
|
|
/* Demarcation point: After this, no recoverable errors are allowed.
|
|
|
|
All memory allocations for new objects must have happened
|
|
|
|
before. */
|
|
|
|
|
2019-12-13 09:23:10 +00:00
|
|
|
/* Finalize the NODELETE status first. This comes before
|
|
|
|
update_scopes, so that lazy binding will not see pending NODELETE
|
|
|
|
state for newly loaded objects. There is a compiler barrier in
|
|
|
|
update_scopes which ensures that the changes from
|
|
|
|
activate_nodelete are visible before new objects show up in the
|
|
|
|
local scope. */
|
2019-12-13 09:18:24 +00:00
|
|
|
activate_nodelete (new);
|
2019-11-13 14:44:56 +00:00
|
|
|
|
2019-11-27 15:37:17 +00:00
|
|
|
/* Second stage after resize_scopes: Actually perform the scope
|
|
|
|
update. After this, dlsym and lazy binding can bind to new
|
|
|
|
objects. */
|
|
|
|
update_scopes (new);
|
|
|
|
|
2021-12-28 21:52:56 +00:00
|
|
|
if (!_dl_find_object_update (new))
|
|
|
|
_dl_signal_error (ENOMEM, new->l_libname->name, NULL,
|
|
|
|
N_ ("cannot allocate address lookup data"));
|
|
|
|
|
2019-11-27 15:37:17 +00:00
|
|
|
/* FIXME: It is unclear whether the order here is correct.
|
|
|
|
Shouldn't new objects be made available for binding (and thus
|
|
|
|
execution) only after there TLS data has been set up fully?
|
|
|
|
Fixing bug 16134 will likely make this distinction less
|
|
|
|
important. */
|
|
|
|
|
|
|
|
/* Second stage after resize_tls_slotinfo: Update the slotinfo data
|
|
|
|
structures. */
|
|
|
|
if (any_tls)
|
|
|
|
/* FIXME: This calls _dl_update_slotinfo, which aborts the process
|
|
|
|
on memory allocation failure. See bug 16134. */
|
|
|
|
update_tls_slotinfo (new);
|
2011-05-15 01:25:43 +00:00
|
|
|
|
2012-07-26 10:03:35 +00:00
|
|
|
/* Notify the debugger all new objects have been relocated. */
|
|
|
|
if (relocation_in_progress)
|
|
|
|
LIBC_PROBE (reloc_complete, 3, args->nsid, r, new);
|
|
|
|
|
elf: Implement __libc_early_init
This function is defined in libc.so, and the dynamic loader calls
right after relocation has been finished, before any ELF constructors
or the preinit function is invoked. It is also used in the static
build for initializing parts of the static libc.
To locate __libc_early_init, a direct symbol lookup function is used,
_dl_lookup_direct. It does not search the entire symbol scope and
consults merely a single link map. This function could also be used
to implement lookups in the vDSO (as an optimization).
A per-namespace variable (libc_map) is added for locating libc.so,
to avoid repeated traversals of the search scope. It is similar to
GL(dl_initfirst). An alternative would have been to thread a context
argument from _dl_open down to _dl_map_object_from_fd (where libc.so
is identified). This could have avoided the global variable, but
the change would be larger as a result. It would not have been
possible to use this to replace GL(dl_initfirst) because that global
variable is used to pass the function pointer past the stack switch
from dl_main to the main program. Replacing that requires adding
a new argument to _dl_init, which in turn needs changes to the
architecture-specific libc.so startup code written in assembler.
__libc_early_init should not be used to replace _dl_var_init (as
it exists today on some architectures). Instead, _dl_lookup_direct
should be used to look up a new variable symbol in libc.so, and
that should then be initialized from the dynamic loader, immediately
after the object has been loaded in _dl_map_object_from_fd (before
relocation is run). This way, more IFUNC resolvers which depend on
these variables will work.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
2020-04-24 20:31:15 +00:00
|
|
|
/* If libc.so was not there before, attempt to call its early
|
2020-04-29 13:44:03 +00:00
|
|
|
initialization routine. Indicate to the initialization routine
|
|
|
|
whether the libc being initialized is the one in the base
|
|
|
|
namespace. */
|
elf: Implement __libc_early_init
This function is defined in libc.so, and the dynamic loader calls
right after relocation has been finished, before any ELF constructors
or the preinit function is invoked. It is also used in the static
build for initializing parts of the static libc.
To locate __libc_early_init, a direct symbol lookup function is used,
_dl_lookup_direct. It does not search the entire symbol scope and
consults merely a single link map. This function could also be used
to implement lookups in the vDSO (as an optimization).
A per-namespace variable (libc_map) is added for locating libc.so,
to avoid repeated traversals of the search scope. It is similar to
GL(dl_initfirst). An alternative would have been to thread a context
argument from _dl_open down to _dl_map_object_from_fd (where libc.so
is identified). This could have avoided the global variable, but
the change would be larger as a result. It would not have been
possible to use this to replace GL(dl_initfirst) because that global
variable is used to pass the function pointer past the stack switch
from dl_main to the main program. Replacing that requires adding
a new argument to _dl_init, which in turn needs changes to the
architecture-specific libc.so startup code written in assembler.
__libc_early_init should not be used to replace _dl_var_init (as
it exists today on some architectures). Instead, _dl_lookup_direct
should be used to look up a new variable symbol in libc.so, and
that should then be initialized from the dynamic loader, immediately
after the object has been loaded in _dl_map_object_from_fd (before
relocation is run). This way, more IFUNC resolvers which depend on
these variables will work.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
2020-04-24 20:31:15 +00:00
|
|
|
if (!args->libc_already_loaded)
|
2020-04-29 13:44:03 +00:00
|
|
|
{
|
2021-06-30 03:21:18 +00:00
|
|
|
/* dlopen cannot be used to load an initial libc by design. */
|
2022-08-25 16:46:41 +00:00
|
|
|
struct link_map *libc_map = GL(dl_ns)[args->nsid].libc_map;
|
|
|
|
_dl_call_libc_early_init (libc_map, false);
|
2020-04-29 13:44:03 +00:00
|
|
|
}
|
elf: Implement __libc_early_init
This function is defined in libc.so, and the dynamic loader calls
right after relocation has been finished, before any ELF constructors
or the preinit function is invoked. It is also used in the static
build for initializing parts of the static libc.
To locate __libc_early_init, a direct symbol lookup function is used,
_dl_lookup_direct. It does not search the entire symbol scope and
consults merely a single link map. This function could also be used
to implement lookups in the vDSO (as an optimization).
A per-namespace variable (libc_map) is added for locating libc.so,
to avoid repeated traversals of the search scope. It is similar to
GL(dl_initfirst). An alternative would have been to thread a context
argument from _dl_open down to _dl_map_object_from_fd (where libc.so
is identified). This could have avoided the global variable, but
the change would be larger as a result. It would not have been
possible to use this to replace GL(dl_initfirst) because that global
variable is used to pass the function pointer past the stack switch
from dl_main to the main program. Replacing that requires adding
a new argument to _dl_init, which in turn needs changes to the
architecture-specific libc.so startup code written in assembler.
__libc_early_init should not be used to replace _dl_var_init (as
it exists today on some architectures). Instead, _dl_lookup_direct
should be used to look up a new variable symbol in libc.so, and
that should then be initialized from the dynamic loader, immediately
after the object has been loaded in _dl_map_object_from_fd (before
relocation is run). This way, more IFUNC resolvers which depend on
these variables will work.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
2020-04-24 20:31:15 +00:00
|
|
|
|
2021-09-15 14:16:19 +00:00
|
|
|
args->worker_continue = true;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
dl_open_worker (void *a)
|
|
|
|
{
|
|
|
|
struct dl_open_args *args = a;
|
|
|
|
|
|
|
|
args->worker_continue = false;
|
|
|
|
|
|
|
|
{
|
|
|
|
/* Protects global and module specific TLS state. */
|
|
|
|
__rtld_lock_lock_recursive (GL(dl_load_tls_lock));
|
|
|
|
|
|
|
|
struct dl_exception ex;
|
|
|
|
int err = _dl_catch_exception (&ex, dl_open_worker_begin, args);
|
|
|
|
|
|
|
|
__rtld_lock_unlock_recursive (GL(dl_load_tls_lock));
|
|
|
|
|
|
|
|
if (__glibc_unlikely (ex.errstring != NULL))
|
|
|
|
/* Reraise the error. */
|
|
|
|
_dl_signal_exception (err, &ex, NULL);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!args->worker_continue)
|
|
|
|
return;
|
|
|
|
|
|
|
|
int mode = args->mode;
|
|
|
|
struct link_map *new = args->map;
|
|
|
|
|
2019-11-27 15:20:47 +00:00
|
|
|
/* Run the initializer functions of new objects. Temporarily
|
|
|
|
disable the exception handler, so that lazy binding failures are
|
|
|
|
fatal. */
|
|
|
|
{
|
|
|
|
struct dl_init_args init_args =
|
|
|
|
{
|
|
|
|
.new = new,
|
|
|
|
.argc = args->argc,
|
|
|
|
.argv = args->argv,
|
|
|
|
.env = args->env
|
|
|
|
};
|
|
|
|
_dl_catch_exception (NULL, call_dl_init, &init_args);
|
|
|
|
}
|
Mon Jun 10 06:14:03 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* sysdeps/mach/hurd/dl-sysdep.c (__open): Define this instead of open.
(__close, __mmap): Likewise define with __ names now.
Mon Jun 10 05:13:18 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* elf/dl-support.c: New file.
* elf/Makefile (CFLAGS-dl-support.c): New variable.
(routines, elide-routines.so): Add dl-support.
* elf/dl-minimal.c (_dl_pagesize): Remove common defn.
* elf/dl-load.c (_dl_pagesize): Define it here.
(_dl_map_object_from_fd): Initialize it if zero.
* elf/link.h (_dl_pagesize): Remove const.
Sun Jun 9 04:04:26 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* elf/Makefile (routines): Add dl-symbol.
* elf/dl-lookup.c (_dl_symbol_value): Moved to ...
* elf/dl-symbol.c: New file.
* elf/elf.h (Elf32_Xword, Elf32_Sxword): New types.
(Elf32_Section, Elf64_Section): New types, 16 bits.
(Elf32_Sym, Elf64_Sym): Use it.
* elf/dl-deps.c (_dl_open): Moved to ...
* elf/dl-open.c: New file.
* Makefile (routines): Add dl-open.
* elf/Makefile (dl-routines): New variable.
(routines): Add $(dl-routines).
(elide-routines.so): New variable, set to $(dl-routines).
(libdl-inhibit-o): Variable removed; build all flavors of -ldl.
(rtld-routines): All but rtld, dl-sysdep, and dl-minimal moved to
$(dl-routines).
* elf/dl-lookup.c (_dl_lookup_symbol): Remove magic symbol grokage.
* elf/dladdr.c: Use ELFW(ST_BIND) in place of ELF32_ST_BIND.
* elf/dl-load.c (open_path): Use __ names for open and close. Avoid
using strdup.
(_dl_map_object): Likewise.
(_dl_map_object_from_fd): Use __ names for mmap, munmap, and mprotect.
* elf/dl-minimal.c (malloc): Likewise.
* elf/dl-reloc.c (_dl_relocate_object): Likewise.
* elf/dl-minimal.c (_dl_pagesize): New variable.
(malloc): Use that instead of a static variable.
* elf/dl-reloc.c (_dl_relocate_object): Use _dl_pagesize instead of
calling getpagesize.
* elf/dl-load.c (_dl_map_object_from_fd): Likewise.
* elf/link.h: Declare _dl_pagesize.
* elf/rtld.c (dl_r_debug): Renamed to _dl_r_debug.
* elf/link.h (struct link_map): Use Half for l_phnum instead of Word.
* elf/rtld.c (dl_main): Use Half for phdr count arg.
(_dl_sysdep_start): Update prototype of DL_MAIN function ptr arg.
* elf/dl-load.c (_dl_map_object_from_fd): Use explicit Elf32_Word to
extract 4-byte magic number, not ElfW(Word). Match EI_CLASS against
native wordsize, either 32 or 64.
* elf/elf.h (Elf64_Byte, Elf64_Section): Typedefs removed. In C a
char is always a byte, no need for a typedef. Section indices are
16-bit quantities in elf64, which already have a typedef Elf64_Half.
Remove partial -lelf implementation. There is now a
separately-distributed `libelf' package that implements it.
* elf/dl-lookup.c: Don't #include <libelf.h> any more.
(_dl_elf_hash): New function, moved from
libelf.h:elf_hash.
(_dl_lookup_symbol): Use it instead of elf_hash.
* elf/libelf.h: File removed.
* elf/elf_hash.c: File removed.
* elf/Makefile (headers): Remove libelf.h.
(extra-libs): Remove libelf.
(libelf-routines): Variable removed.
* elf/Makefile (libdl.so): Remove commands from this target. The
implicit rule commands are correct, this explicit rule just serves to
add some dependencies.
* elf/dl-lookup.c (_dl_lookup_symbol): Use ELFW(ST_TYPE) in place of
ELF32_ST_TYPE. Likewise ST_BIND.
* elf/do-rel.h (elf_dynamic_do_rel): Likewise R_SYM.
* elf/link.h (ElfW): New macro for wordsize-independent ElfXX_* type
naming.
(ELFW): New macro, likewise for ELFXX_* macro naming.
(_ElfW, _ElfW_1): New macros, subroutines of ElfW and ELF.
Sat Jun 8 20:52:38 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* elf/link.h, elf/do-rel.h, elf/dynamic-link.h, elf/dl-deps.c,
elf/dl-init.c, elf/dl-load.c, elf/dl-lookup.c, elf/dl-reloc.c,
elf/dl-runtime.c, elf/dladdr.c, elf/dlclose.c, elf/dlsym.c,
elf/linux-compat.c, elf/rtld.c: Change all uses of `Elf32_XXX' to
`ElfW(XXX)' for wordsize-independence.
Sat Jun 8 20:50:42 1996 Richard Henderson <rth@tamu.edu>
* elf/elf.h: Move Elf64_* types in parity with Elf32 counterparts.
(Elf64_auxv_t): New type.
(EM_ALPHA, R_ALPHA_*): New macros for elf64-alpha format.
1996-06-10 10:18:47 +00:00
|
|
|
|
1999-01-21 14:17:43 +00:00
|
|
|
/* Now we can make the new map available in the global scope. */
|
2000-03-15 05:32:11 +00:00
|
|
|
if (mode & RTLD_GLOBAL)
|
Avoid late failure in dlopen in global scope update [BZ #25112]
The call to add_to_global in dl_open_worker happens after running ELF
constructors for new objects. At this point, proper recovery from
malloc failure would be quite complicated: We would have to run the
ELF destructors and close all opened objects, something that we
currently do not do.
Instead, this change splits add_to_global into two phases,
add_to_global_resize (which can raise an exception, called before ELF
constructors run), and add_to_global_update (which cannot, called
after ELF constructors). A complication arises due to recursive
dlopen: After the inner dlopen consumes some space, the pre-allocation
in the outer dlopen may no longer be sufficient. A new member in the
namespace structure, _ns_global_scope_pending_adds keeps track of the
maximum number of objects that need to be added to the global scope.
This enables the inner add_to_global_resize call to take into account
the needs of an outer dlopen.
Most code in the dynamic linker assumes that the number of global
scope entries fits into an unsigned int (matching the r_nlist member
of struct r_scop_elem). Therefore, change the type of
_ns_global_scope_alloc to unsigned int (from size_t), and add overflow
checks.
Change-Id: Ie08e2f318510d5a6a4bcb1c315f46791b5b77524
2019-10-31 17:25:39 +00:00
|
|
|
add_to_global_update (new);
|
1998-09-06 09:16:53 +00:00
|
|
|
|
2000-08-28 08:32:23 +00:00
|
|
|
/* Let the user know about the opencount. */
|
2014-02-10 13:45:42 +00:00
|
|
|
if (__glibc_unlikely (GLRO(dl_debug_mask) & DL_DEBUG_FILES))
|
2005-03-18 11:11:42 +00:00
|
|
|
_dl_debug_printf ("opening file=%s [%lu]; direct_opencount=%u\n\n",
|
|
|
|
new->l_name, new->l_ns, new->l_direct_opencount);
|
1998-07-13 12:29:13 +00:00
|
|
|
}
|
|
|
|
|
Update.
* sysdeps/gnu/Makefile (libdl-routines): Add eval.
1999-07-06 Zack Weinberg <zack@rabi.columbia.edu>
* dlfcn: New directory. Move the following files from elf:
dladdr.c, dlclose.c, dlerror.c, dlfcn.h, dlopen.c,
dlopenold.c, dlsym.c, dlvsym.c.
* dlfcn/Makefile: New file.
* dlfcn/Versions: New file.
* dlfcn/dlsym.c: All ELF-specific code split out to new
function _dl_sym.
* dlfcn/dlvsym.c: All ELF-specific code split out to new
function _dl_vsym.
* elf/dl-sym.c: New file. _dl_sym and _dl_vsym are
implemented here.
* dlfcn/dladdr.c: Remove all references to ELF data structures
or headers.
* dlfcn/dlclose.c: Likewise.
* dlfcn/dlerror.c: Likewise.
* dlfcn/dlopen.c: Likewise.
* dlfcn/dlopenold.c: Likewise.
* Makeconfig (dlfcn): New variable - set to `dlfcn' if elf is
yes, empty otherwise.
(libdl): Set to dlfcn/libdl.so or libdl.a if elf is yes,
depending on build-shared.
(subdirs): Add $(dlfcn).
(rpath-dirs): Add dlfcn.
* elf/Makefile: Remove all references to libdl or its
components, except the ones relating to the test cases.
(routines): Add dl-sym.
* elf/Versions (libc): Add _dl_sym and _dl_vsym for GLIBC_2.2.
(libdl): Delete.
* elf/dl-close.c (_dl_close): Change argument to void *.
* elf/dl-open.c (_dl_open): Change return type to void *.
* elf/eval.c: Removed.
* elf/ldsodefs.h: Move prototypes of _dl_catch_error,
_dlerror_run, _dl_open, _dl_close, _dl_addr, and
_dl_mcount_wrapper_check to include/dlfcn.h. Delete
_CALL_DL_FCT macro.
* include/dlfcn.h: Also prototype _dl_sym and _dl_vsym here.
Include real header from dlfcn directory.
* include/ldsodefs.h: Removed.
* grp/initgroups.c: Use DL_CALL_FCT not _CALL_DL_FCT.
* nss/getXXbyYY_r.c: Likewise.
* nss/getXXent_r.c: Likewise.
* iconv/gconv.c: Likewise. Don't include ldsodefs.h.
* iconv/gconv_db.c: Likewise. Don't include ldsodefs.h.
* iconv/skeleton.c: Don't include ldsodefs.h.
* nss/nsswitch.h: Don't include ldsodefs.h. Include dlfcn.h.
1999-07-07 Ulrich Drepper <drepper@cygnus.com>
1999-07-07 18:39:33 +00:00
|
|
|
void *
|
2005-01-06 22:40:27 +00:00
|
|
|
_dl_open (const char *file, int mode, const void *caller_dlopen, Lmid_t nsid,
|
|
|
|
int argc, char *argv[], char *env[])
|
1998-07-13 12:29:13 +00:00
|
|
|
{
|
1998-11-02 22:26:02 +00:00
|
|
|
if ((mode & RTLD_BINDING_MASK) == 0)
|
|
|
|
/* One of the flags must be set. */
|
2005-01-06 22:40:27 +00:00
|
|
|
_dl_signal_error (EINVAL, file, NULL, N_("invalid mode for dlopen()"));
|
1998-11-02 22:26:02 +00:00
|
|
|
|
1998-07-13 12:29:13 +00:00
|
|
|
/* Make sure we are alone. */
|
2002-12-06 11:49:42 +00:00
|
|
|
__rtld_lock_lock_recursive (GL(dl_load_lock));
|
1998-07-13 12:29:13 +00:00
|
|
|
|
2014-02-10 13:45:42 +00:00
|
|
|
if (__glibc_unlikely (nsid == LM_ID_NEWLM))
|
[BZ #77]
Update.
Add support for namespaces in the dynamic linker.
* dlfcn/Makefile (libdl-routines): Add dlmopen.
* dlfcn/Versions [libdl, GLIBC_2.3.4]: Add dlmopen.
* dlfcn/dlfcn.h: Define Lmid_t, LM_ID_BASE, and LM_ID_NEWLM.
Declare dlmopen. Document RTLD_DI_LMID.
* dlfcn/dlinfo.c: Handle RTLD_DI_LMID.
* dlfcn/dlmopen.c: New file.
* dlfcn/dlopen.c: Pass new parameter to _dl_open.
* dlfcn/dlopenold.c: Likewise.
* elf/dl-addr.c: Adjust for removal of GL(dl_loaded).
* elf/dl-caller.c: Likewise.
* elf/dl-close.c: Likewise.
* elf/dl-conflict.c: Likewise.
* elf/dl-debug.c: Likewise.
* elf/dl-lookup.c: Likewise.
* elf/dl-sym.c: Likewise.
* elf/dl-version.c: Likewise.
* elf/do-lookup.h: Likewise.
* elf/rtld.c: Likewise.
* sysdeps/unix/sysv/linux/i386/dl-librecon.h: Likewise.
* elf/dl-depsc: Likewise. Add new parameter to _dl_map_object.
* elf/dl-fini.c: Call destructors in all namespaces.
* elf/dl-iteratephdr.c: Compute total nloaded. Adjust for removal of
GL(dl_loaded).
* elf/dl-libc.c: Pass new parameter to _dl_open. Adjust for removal
of GL(dl_loaded).
* elf/dl-load.c (_dl_map_object_from_fd): Don't load ld.so a second
time. Reuse the one from the main namespace in all others.
Pass new parameter to _dl_new_object.
Adjust for removal of GL(dl_loaded).
* elf/dl-object.c: Take new parameter. Use it to initialize l_ns.
Adjust for removal of GL(dl_loaded).
* elf/dl-open.c (_dl_open): Take new parameter.
Adjust for removal of GL(dl_loaded).
* elf/dl-support.c: Replace global _dl_loaded etc variables with
_dl_ns variable.
* include/dlfcn.h: Adjust prototype of _dl_open.
Define __LM_ID_CALLER.
* include/link.h: Add l_real, l_ns, and l_direct_opencount elements.
* sysdeps/generic/dl-tls.c: Bump TLS_STATIC_SURPLUS. Since libc is
using TLS we need memory appropriate to the number of namespaces.
* sysdeps/generic/ldsodefs.h (struct rtld_global): Replace _dl_loaded,
_dl_nloaded, _dl_global_scope, _dl_main_searchlist, and
_dl_global_scope_alloc with _dl_ns element. Define DL_NNS.
Adjust prototypes of _dl_map_object and member in rtld_global_ro.
* malloc/malloc.c: Include <dlfcn.h>.
* malloc/arena.c (ptmalloc_init): If libc is not in primary namespace,
never use brk.
* elf/Makefile: Add rules to build and run tst-dlmopen1 and
tst-dlmopen2.
* elf/tst-dlmopen1.c: New file.
* elf/tst-dlmopen1mod.c: New file.
* elf/tst-dlmopen2.c: New file.
* elf/dl-close.c: Improve reference counting by tracking direct loads.
* elf/dl-lookup.c (add_dependency): Likewise.
* elf/dl-open.c (dl_open_worker): Likewise.
* elf/rtld.c (dl_main): Likewise.
2004-09-09 GOTO Masanori <gotom@debian.or.jp>
[BZ #77]
* elf/dl-close.c: Count down l_opencount to check not only for
l_reldeps, but also l_initfini.
2004-10-13 Ulrich Drepper <drepper@redhat.com>
2004-10-14 02:08:23 +00:00
|
|
|
{
|
|
|
|
/* Find a new namespace. */
|
2011-06-10 19:45:09 +00:00
|
|
|
for (nsid = 1; DL_NNS > 1 && nsid < GL(dl_nns); ++nsid)
|
[BZ #77]
Update.
Add support for namespaces in the dynamic linker.
* dlfcn/Makefile (libdl-routines): Add dlmopen.
* dlfcn/Versions [libdl, GLIBC_2.3.4]: Add dlmopen.
* dlfcn/dlfcn.h: Define Lmid_t, LM_ID_BASE, and LM_ID_NEWLM.
Declare dlmopen. Document RTLD_DI_LMID.
* dlfcn/dlinfo.c: Handle RTLD_DI_LMID.
* dlfcn/dlmopen.c: New file.
* dlfcn/dlopen.c: Pass new parameter to _dl_open.
* dlfcn/dlopenold.c: Likewise.
* elf/dl-addr.c: Adjust for removal of GL(dl_loaded).
* elf/dl-caller.c: Likewise.
* elf/dl-close.c: Likewise.
* elf/dl-conflict.c: Likewise.
* elf/dl-debug.c: Likewise.
* elf/dl-lookup.c: Likewise.
* elf/dl-sym.c: Likewise.
* elf/dl-version.c: Likewise.
* elf/do-lookup.h: Likewise.
* elf/rtld.c: Likewise.
* sysdeps/unix/sysv/linux/i386/dl-librecon.h: Likewise.
* elf/dl-depsc: Likewise. Add new parameter to _dl_map_object.
* elf/dl-fini.c: Call destructors in all namespaces.
* elf/dl-iteratephdr.c: Compute total nloaded. Adjust for removal of
GL(dl_loaded).
* elf/dl-libc.c: Pass new parameter to _dl_open. Adjust for removal
of GL(dl_loaded).
* elf/dl-load.c (_dl_map_object_from_fd): Don't load ld.so a second
time. Reuse the one from the main namespace in all others.
Pass new parameter to _dl_new_object.
Adjust for removal of GL(dl_loaded).
* elf/dl-object.c: Take new parameter. Use it to initialize l_ns.
Adjust for removal of GL(dl_loaded).
* elf/dl-open.c (_dl_open): Take new parameter.
Adjust for removal of GL(dl_loaded).
* elf/dl-support.c: Replace global _dl_loaded etc variables with
_dl_ns variable.
* include/dlfcn.h: Adjust prototype of _dl_open.
Define __LM_ID_CALLER.
* include/link.h: Add l_real, l_ns, and l_direct_opencount elements.
* sysdeps/generic/dl-tls.c: Bump TLS_STATIC_SURPLUS. Since libc is
using TLS we need memory appropriate to the number of namespaces.
* sysdeps/generic/ldsodefs.h (struct rtld_global): Replace _dl_loaded,
_dl_nloaded, _dl_global_scope, _dl_main_searchlist, and
_dl_global_scope_alloc with _dl_ns element. Define DL_NNS.
Adjust prototypes of _dl_map_object and member in rtld_global_ro.
* malloc/malloc.c: Include <dlfcn.h>.
* malloc/arena.c (ptmalloc_init): If libc is not in primary namespace,
never use brk.
* elf/Makefile: Add rules to build and run tst-dlmopen1 and
tst-dlmopen2.
* elf/tst-dlmopen1.c: New file.
* elf/tst-dlmopen1mod.c: New file.
* elf/tst-dlmopen2.c: New file.
* elf/dl-close.c: Improve reference counting by tracking direct loads.
* elf/dl-lookup.c (add_dependency): Likewise.
* elf/dl-open.c (dl_open_worker): Likewise.
* elf/rtld.c (dl_main): Likewise.
2004-09-09 GOTO Masanori <gotom@debian.or.jp>
[BZ #77]
* elf/dl-close.c: Count down l_opencount to check not only for
l_reldeps, but also l_initfini.
2004-10-13 Ulrich Drepper <drepper@redhat.com>
2004-10-14 02:08:23 +00:00
|
|
|
if (GL(dl_ns)[nsid]._ns_loaded == NULL)
|
|
|
|
break;
|
|
|
|
|
2014-02-10 13:45:42 +00:00
|
|
|
if (__glibc_unlikely (nsid == DL_NNS))
|
[BZ #77]
Update.
Add support for namespaces in the dynamic linker.
* dlfcn/Makefile (libdl-routines): Add dlmopen.
* dlfcn/Versions [libdl, GLIBC_2.3.4]: Add dlmopen.
* dlfcn/dlfcn.h: Define Lmid_t, LM_ID_BASE, and LM_ID_NEWLM.
Declare dlmopen. Document RTLD_DI_LMID.
* dlfcn/dlinfo.c: Handle RTLD_DI_LMID.
* dlfcn/dlmopen.c: New file.
* dlfcn/dlopen.c: Pass new parameter to _dl_open.
* dlfcn/dlopenold.c: Likewise.
* elf/dl-addr.c: Adjust for removal of GL(dl_loaded).
* elf/dl-caller.c: Likewise.
* elf/dl-close.c: Likewise.
* elf/dl-conflict.c: Likewise.
* elf/dl-debug.c: Likewise.
* elf/dl-lookup.c: Likewise.
* elf/dl-sym.c: Likewise.
* elf/dl-version.c: Likewise.
* elf/do-lookup.h: Likewise.
* elf/rtld.c: Likewise.
* sysdeps/unix/sysv/linux/i386/dl-librecon.h: Likewise.
* elf/dl-depsc: Likewise. Add new parameter to _dl_map_object.
* elf/dl-fini.c: Call destructors in all namespaces.
* elf/dl-iteratephdr.c: Compute total nloaded. Adjust for removal of
GL(dl_loaded).
* elf/dl-libc.c: Pass new parameter to _dl_open. Adjust for removal
of GL(dl_loaded).
* elf/dl-load.c (_dl_map_object_from_fd): Don't load ld.so a second
time. Reuse the one from the main namespace in all others.
Pass new parameter to _dl_new_object.
Adjust for removal of GL(dl_loaded).
* elf/dl-object.c: Take new parameter. Use it to initialize l_ns.
Adjust for removal of GL(dl_loaded).
* elf/dl-open.c (_dl_open): Take new parameter.
Adjust for removal of GL(dl_loaded).
* elf/dl-support.c: Replace global _dl_loaded etc variables with
_dl_ns variable.
* include/dlfcn.h: Adjust prototype of _dl_open.
Define __LM_ID_CALLER.
* include/link.h: Add l_real, l_ns, and l_direct_opencount elements.
* sysdeps/generic/dl-tls.c: Bump TLS_STATIC_SURPLUS. Since libc is
using TLS we need memory appropriate to the number of namespaces.
* sysdeps/generic/ldsodefs.h (struct rtld_global): Replace _dl_loaded,
_dl_nloaded, _dl_global_scope, _dl_main_searchlist, and
_dl_global_scope_alloc with _dl_ns element. Define DL_NNS.
Adjust prototypes of _dl_map_object and member in rtld_global_ro.
* malloc/malloc.c: Include <dlfcn.h>.
* malloc/arena.c (ptmalloc_init): If libc is not in primary namespace,
never use brk.
* elf/Makefile: Add rules to build and run tst-dlmopen1 and
tst-dlmopen2.
* elf/tst-dlmopen1.c: New file.
* elf/tst-dlmopen1mod.c: New file.
* elf/tst-dlmopen2.c: New file.
* elf/dl-close.c: Improve reference counting by tracking direct loads.
* elf/dl-lookup.c (add_dependency): Likewise.
* elf/dl-open.c (dl_open_worker): Likewise.
* elf/rtld.c (dl_main): Likewise.
2004-09-09 GOTO Masanori <gotom@debian.or.jp>
[BZ #77]
* elf/dl-close.c: Count down l_opencount to check not only for
l_reldeps, but also l_initfini.
2004-10-13 Ulrich Drepper <drepper@redhat.com>
2004-10-14 02:08:23 +00:00
|
|
|
{
|
|
|
|
/* No more namespace available. */
|
|
|
|
__rtld_lock_unlock_recursive (GL(dl_load_lock));
|
|
|
|
|
2005-01-06 22:40:27 +00:00
|
|
|
_dl_signal_error (EINVAL, file, NULL, N_("\
|
[BZ #77]
Update.
Add support for namespaces in the dynamic linker.
* dlfcn/Makefile (libdl-routines): Add dlmopen.
* dlfcn/Versions [libdl, GLIBC_2.3.4]: Add dlmopen.
* dlfcn/dlfcn.h: Define Lmid_t, LM_ID_BASE, and LM_ID_NEWLM.
Declare dlmopen. Document RTLD_DI_LMID.
* dlfcn/dlinfo.c: Handle RTLD_DI_LMID.
* dlfcn/dlmopen.c: New file.
* dlfcn/dlopen.c: Pass new parameter to _dl_open.
* dlfcn/dlopenold.c: Likewise.
* elf/dl-addr.c: Adjust for removal of GL(dl_loaded).
* elf/dl-caller.c: Likewise.
* elf/dl-close.c: Likewise.
* elf/dl-conflict.c: Likewise.
* elf/dl-debug.c: Likewise.
* elf/dl-lookup.c: Likewise.
* elf/dl-sym.c: Likewise.
* elf/dl-version.c: Likewise.
* elf/do-lookup.h: Likewise.
* elf/rtld.c: Likewise.
* sysdeps/unix/sysv/linux/i386/dl-librecon.h: Likewise.
* elf/dl-depsc: Likewise. Add new parameter to _dl_map_object.
* elf/dl-fini.c: Call destructors in all namespaces.
* elf/dl-iteratephdr.c: Compute total nloaded. Adjust for removal of
GL(dl_loaded).
* elf/dl-libc.c: Pass new parameter to _dl_open. Adjust for removal
of GL(dl_loaded).
* elf/dl-load.c (_dl_map_object_from_fd): Don't load ld.so a second
time. Reuse the one from the main namespace in all others.
Pass new parameter to _dl_new_object.
Adjust for removal of GL(dl_loaded).
* elf/dl-object.c: Take new parameter. Use it to initialize l_ns.
Adjust for removal of GL(dl_loaded).
* elf/dl-open.c (_dl_open): Take new parameter.
Adjust for removal of GL(dl_loaded).
* elf/dl-support.c: Replace global _dl_loaded etc variables with
_dl_ns variable.
* include/dlfcn.h: Adjust prototype of _dl_open.
Define __LM_ID_CALLER.
* include/link.h: Add l_real, l_ns, and l_direct_opencount elements.
* sysdeps/generic/dl-tls.c: Bump TLS_STATIC_SURPLUS. Since libc is
using TLS we need memory appropriate to the number of namespaces.
* sysdeps/generic/ldsodefs.h (struct rtld_global): Replace _dl_loaded,
_dl_nloaded, _dl_global_scope, _dl_main_searchlist, and
_dl_global_scope_alloc with _dl_ns element. Define DL_NNS.
Adjust prototypes of _dl_map_object and member in rtld_global_ro.
* malloc/malloc.c: Include <dlfcn.h>.
* malloc/arena.c (ptmalloc_init): If libc is not in primary namespace,
never use brk.
* elf/Makefile: Add rules to build and run tst-dlmopen1 and
tst-dlmopen2.
* elf/tst-dlmopen1.c: New file.
* elf/tst-dlmopen1mod.c: New file.
* elf/tst-dlmopen2.c: New file.
* elf/dl-close.c: Improve reference counting by tracking direct loads.
* elf/dl-lookup.c (add_dependency): Likewise.
* elf/dl-open.c (dl_open_worker): Likewise.
* elf/rtld.c (dl_main): Likewise.
2004-09-09 GOTO Masanori <gotom@debian.or.jp>
[BZ #77]
* elf/dl-close.c: Count down l_opencount to check not only for
l_reldeps, but also l_initfini.
2004-10-13 Ulrich Drepper <drepper@redhat.com>
2004-10-14 02:08:23 +00:00
|
|
|
no more namespaces available for dlmopen()"));
|
|
|
|
}
|
2022-10-14 09:02:25 +00:00
|
|
|
else if (nsid == GL(dl_nns))
|
|
|
|
{
|
|
|
|
__rtld_lock_initialize (GL(dl_ns)[nsid]._ns_unique_sym_table.lock);
|
|
|
|
++GL(dl_nns);
|
|
|
|
}
|
2022-08-26 19:15:43 +00:00
|
|
|
|
2022-10-14 09:02:25 +00:00
|
|
|
GL(dl_ns)[nsid].libc_map = NULL;
|
2021-08-18 02:35:48 +00:00
|
|
|
_dl_debug_update (nsid)->r_state = RT_CONSISTENT;
|
[BZ #77]
Update.
Add support for namespaces in the dynamic linker.
* dlfcn/Makefile (libdl-routines): Add dlmopen.
* dlfcn/Versions [libdl, GLIBC_2.3.4]: Add dlmopen.
* dlfcn/dlfcn.h: Define Lmid_t, LM_ID_BASE, and LM_ID_NEWLM.
Declare dlmopen. Document RTLD_DI_LMID.
* dlfcn/dlinfo.c: Handle RTLD_DI_LMID.
* dlfcn/dlmopen.c: New file.
* dlfcn/dlopen.c: Pass new parameter to _dl_open.
* dlfcn/dlopenold.c: Likewise.
* elf/dl-addr.c: Adjust for removal of GL(dl_loaded).
* elf/dl-caller.c: Likewise.
* elf/dl-close.c: Likewise.
* elf/dl-conflict.c: Likewise.
* elf/dl-debug.c: Likewise.
* elf/dl-lookup.c: Likewise.
* elf/dl-sym.c: Likewise.
* elf/dl-version.c: Likewise.
* elf/do-lookup.h: Likewise.
* elf/rtld.c: Likewise.
* sysdeps/unix/sysv/linux/i386/dl-librecon.h: Likewise.
* elf/dl-depsc: Likewise. Add new parameter to _dl_map_object.
* elf/dl-fini.c: Call destructors in all namespaces.
* elf/dl-iteratephdr.c: Compute total nloaded. Adjust for removal of
GL(dl_loaded).
* elf/dl-libc.c: Pass new parameter to _dl_open. Adjust for removal
of GL(dl_loaded).
* elf/dl-load.c (_dl_map_object_from_fd): Don't load ld.so a second
time. Reuse the one from the main namespace in all others.
Pass new parameter to _dl_new_object.
Adjust for removal of GL(dl_loaded).
* elf/dl-object.c: Take new parameter. Use it to initialize l_ns.
Adjust for removal of GL(dl_loaded).
* elf/dl-open.c (_dl_open): Take new parameter.
Adjust for removal of GL(dl_loaded).
* elf/dl-support.c: Replace global _dl_loaded etc variables with
_dl_ns variable.
* include/dlfcn.h: Adjust prototype of _dl_open.
Define __LM_ID_CALLER.
* include/link.h: Add l_real, l_ns, and l_direct_opencount elements.
* sysdeps/generic/dl-tls.c: Bump TLS_STATIC_SURPLUS. Since libc is
using TLS we need memory appropriate to the number of namespaces.
* sysdeps/generic/ldsodefs.h (struct rtld_global): Replace _dl_loaded,
_dl_nloaded, _dl_global_scope, _dl_main_searchlist, and
_dl_global_scope_alloc with _dl_ns element. Define DL_NNS.
Adjust prototypes of _dl_map_object and member in rtld_global_ro.
* malloc/malloc.c: Include <dlfcn.h>.
* malloc/arena.c (ptmalloc_init): If libc is not in primary namespace,
never use brk.
* elf/Makefile: Add rules to build and run tst-dlmopen1 and
tst-dlmopen2.
* elf/tst-dlmopen1.c: New file.
* elf/tst-dlmopen1mod.c: New file.
* elf/tst-dlmopen2.c: New file.
* elf/dl-close.c: Improve reference counting by tracking direct loads.
* elf/dl-lookup.c (add_dependency): Likewise.
* elf/dl-open.c (dl_open_worker): Likewise.
* elf/rtld.c (dl_main): Likewise.
2004-09-09 GOTO Masanori <gotom@debian.or.jp>
[BZ #77]
* elf/dl-close.c: Count down l_opencount to check not only for
l_reldeps, but also l_initfini.
2004-10-13 Ulrich Drepper <drepper@redhat.com>
2004-10-14 02:08:23 +00:00
|
|
|
}
|
2004-10-27 21:33:40 +00:00
|
|
|
/* Never allow loading a DSO in a namespace which is empty. Such
|
2005-01-06 22:40:27 +00:00
|
|
|
direct placements is only causing problems. Also don't allow
|
|
|
|
loading into a namespace used for auditing. */
|
2015-04-17 19:11:58 +00:00
|
|
|
else if (__glibc_unlikely (nsid != LM_ID_BASE && nsid != __LM_ID_CALLER)
|
|
|
|
&& (__glibc_unlikely (nsid < 0 || nsid >= GL(dl_nns))
|
|
|
|
/* This prevents the [NSID] index expressions from being
|
|
|
|
evaluated, so the compiler won't think that we are
|
|
|
|
accessing an invalid index here in the !SHARED case where
|
|
|
|
DL_NNS is 1 and so any NSID != 0 is invalid. */
|
|
|
|
|| DL_NNS == 1
|
|
|
|
|| GL(dl_ns)[nsid]._ns_nloaded == 0
|
2005-01-06 22:40:27 +00:00
|
|
|
|| GL(dl_ns)[nsid]._ns_loaded->l_auditing))
|
|
|
|
_dl_signal_error (EINVAL, file, NULL,
|
|
|
|
N_("invalid target namespace in dlmopen()"));
|
[BZ #77]
Update.
Add support for namespaces in the dynamic linker.
* dlfcn/Makefile (libdl-routines): Add dlmopen.
* dlfcn/Versions [libdl, GLIBC_2.3.4]: Add dlmopen.
* dlfcn/dlfcn.h: Define Lmid_t, LM_ID_BASE, and LM_ID_NEWLM.
Declare dlmopen. Document RTLD_DI_LMID.
* dlfcn/dlinfo.c: Handle RTLD_DI_LMID.
* dlfcn/dlmopen.c: New file.
* dlfcn/dlopen.c: Pass new parameter to _dl_open.
* dlfcn/dlopenold.c: Likewise.
* elf/dl-addr.c: Adjust for removal of GL(dl_loaded).
* elf/dl-caller.c: Likewise.
* elf/dl-close.c: Likewise.
* elf/dl-conflict.c: Likewise.
* elf/dl-debug.c: Likewise.
* elf/dl-lookup.c: Likewise.
* elf/dl-sym.c: Likewise.
* elf/dl-version.c: Likewise.
* elf/do-lookup.h: Likewise.
* elf/rtld.c: Likewise.
* sysdeps/unix/sysv/linux/i386/dl-librecon.h: Likewise.
* elf/dl-depsc: Likewise. Add new parameter to _dl_map_object.
* elf/dl-fini.c: Call destructors in all namespaces.
* elf/dl-iteratephdr.c: Compute total nloaded. Adjust for removal of
GL(dl_loaded).
* elf/dl-libc.c: Pass new parameter to _dl_open. Adjust for removal
of GL(dl_loaded).
* elf/dl-load.c (_dl_map_object_from_fd): Don't load ld.so a second
time. Reuse the one from the main namespace in all others.
Pass new parameter to _dl_new_object.
Adjust for removal of GL(dl_loaded).
* elf/dl-object.c: Take new parameter. Use it to initialize l_ns.
Adjust for removal of GL(dl_loaded).
* elf/dl-open.c (_dl_open): Take new parameter.
Adjust for removal of GL(dl_loaded).
* elf/dl-support.c: Replace global _dl_loaded etc variables with
_dl_ns variable.
* include/dlfcn.h: Adjust prototype of _dl_open.
Define __LM_ID_CALLER.
* include/link.h: Add l_real, l_ns, and l_direct_opencount elements.
* sysdeps/generic/dl-tls.c: Bump TLS_STATIC_SURPLUS. Since libc is
using TLS we need memory appropriate to the number of namespaces.
* sysdeps/generic/ldsodefs.h (struct rtld_global): Replace _dl_loaded,
_dl_nloaded, _dl_global_scope, _dl_main_searchlist, and
_dl_global_scope_alloc with _dl_ns element. Define DL_NNS.
Adjust prototypes of _dl_map_object and member in rtld_global_ro.
* malloc/malloc.c: Include <dlfcn.h>.
* malloc/arena.c (ptmalloc_init): If libc is not in primary namespace,
never use brk.
* elf/Makefile: Add rules to build and run tst-dlmopen1 and
tst-dlmopen2.
* elf/tst-dlmopen1.c: New file.
* elf/tst-dlmopen1mod.c: New file.
* elf/tst-dlmopen2.c: New file.
* elf/dl-close.c: Improve reference counting by tracking direct loads.
* elf/dl-lookup.c (add_dependency): Likewise.
* elf/dl-open.c (dl_open_worker): Likewise.
* elf/rtld.c (dl_main): Likewise.
2004-09-09 GOTO Masanori <gotom@debian.or.jp>
[BZ #77]
* elf/dl-close.c: Count down l_opencount to check not only for
l_reldeps, but also l_initfini.
2004-10-13 Ulrich Drepper <drepper@redhat.com>
2004-10-14 02:08:23 +00:00
|
|
|
|
2005-06-12 16:29:51 +00:00
|
|
|
struct dl_open_args args;
|
1998-07-13 12:29:13 +00:00
|
|
|
args.file = file;
|
|
|
|
args.mode = mode;
|
2004-03-05 03:47:38 +00:00
|
|
|
args.caller_dlopen = caller_dlopen;
|
1998-07-13 12:29:13 +00:00
|
|
|
args.map = NULL;
|
[BZ #77]
Update.
Add support for namespaces in the dynamic linker.
* dlfcn/Makefile (libdl-routines): Add dlmopen.
* dlfcn/Versions [libdl, GLIBC_2.3.4]: Add dlmopen.
* dlfcn/dlfcn.h: Define Lmid_t, LM_ID_BASE, and LM_ID_NEWLM.
Declare dlmopen. Document RTLD_DI_LMID.
* dlfcn/dlinfo.c: Handle RTLD_DI_LMID.
* dlfcn/dlmopen.c: New file.
* dlfcn/dlopen.c: Pass new parameter to _dl_open.
* dlfcn/dlopenold.c: Likewise.
* elf/dl-addr.c: Adjust for removal of GL(dl_loaded).
* elf/dl-caller.c: Likewise.
* elf/dl-close.c: Likewise.
* elf/dl-conflict.c: Likewise.
* elf/dl-debug.c: Likewise.
* elf/dl-lookup.c: Likewise.
* elf/dl-sym.c: Likewise.
* elf/dl-version.c: Likewise.
* elf/do-lookup.h: Likewise.
* elf/rtld.c: Likewise.
* sysdeps/unix/sysv/linux/i386/dl-librecon.h: Likewise.
* elf/dl-depsc: Likewise. Add new parameter to _dl_map_object.
* elf/dl-fini.c: Call destructors in all namespaces.
* elf/dl-iteratephdr.c: Compute total nloaded. Adjust for removal of
GL(dl_loaded).
* elf/dl-libc.c: Pass new parameter to _dl_open. Adjust for removal
of GL(dl_loaded).
* elf/dl-load.c (_dl_map_object_from_fd): Don't load ld.so a second
time. Reuse the one from the main namespace in all others.
Pass new parameter to _dl_new_object.
Adjust for removal of GL(dl_loaded).
* elf/dl-object.c: Take new parameter. Use it to initialize l_ns.
Adjust for removal of GL(dl_loaded).
* elf/dl-open.c (_dl_open): Take new parameter.
Adjust for removal of GL(dl_loaded).
* elf/dl-support.c: Replace global _dl_loaded etc variables with
_dl_ns variable.
* include/dlfcn.h: Adjust prototype of _dl_open.
Define __LM_ID_CALLER.
* include/link.h: Add l_real, l_ns, and l_direct_opencount elements.
* sysdeps/generic/dl-tls.c: Bump TLS_STATIC_SURPLUS. Since libc is
using TLS we need memory appropriate to the number of namespaces.
* sysdeps/generic/ldsodefs.h (struct rtld_global): Replace _dl_loaded,
_dl_nloaded, _dl_global_scope, _dl_main_searchlist, and
_dl_global_scope_alloc with _dl_ns element. Define DL_NNS.
Adjust prototypes of _dl_map_object and member in rtld_global_ro.
* malloc/malloc.c: Include <dlfcn.h>.
* malloc/arena.c (ptmalloc_init): If libc is not in primary namespace,
never use brk.
* elf/Makefile: Add rules to build and run tst-dlmopen1 and
tst-dlmopen2.
* elf/tst-dlmopen1.c: New file.
* elf/tst-dlmopen1mod.c: New file.
* elf/tst-dlmopen2.c: New file.
* elf/dl-close.c: Improve reference counting by tracking direct loads.
* elf/dl-lookup.c (add_dependency): Likewise.
* elf/dl-open.c (dl_open_worker): Likewise.
* elf/rtld.c (dl_main): Likewise.
2004-09-09 GOTO Masanori <gotom@debian.or.jp>
[BZ #77]
* elf/dl-close.c: Count down l_opencount to check not only for
l_reldeps, but also l_initfini.
2004-10-13 Ulrich Drepper <drepper@redhat.com>
2004-10-14 02:08:23 +00:00
|
|
|
args.nsid = nsid;
|
elf: Implement __libc_early_init
This function is defined in libc.so, and the dynamic loader calls
right after relocation has been finished, before any ELF constructors
or the preinit function is invoked. It is also used in the static
build for initializing parts of the static libc.
To locate __libc_early_init, a direct symbol lookup function is used,
_dl_lookup_direct. It does not search the entire symbol scope and
consults merely a single link map. This function could also be used
to implement lookups in the vDSO (as an optimization).
A per-namespace variable (libc_map) is added for locating libc.so,
to avoid repeated traversals of the search scope. It is similar to
GL(dl_initfirst). An alternative would have been to thread a context
argument from _dl_open down to _dl_map_object_from_fd (where libc.so
is identified). This could have avoided the global variable, but
the change would be larger as a result. It would not have been
possible to use this to replace GL(dl_initfirst) because that global
variable is used to pass the function pointer past the stack switch
from dl_main to the main program. Replacing that requires adding
a new argument to _dl_init, which in turn needs changes to the
architecture-specific libc.so startup code written in assembler.
__libc_early_init should not be used to replace _dl_var_init (as
it exists today on some architectures). Instead, _dl_lookup_direct
should be used to look up a new variable symbol in libc.so, and
that should then be initialized from the dynamic loader, immediately
after the object has been loaded in _dl_map_object_from_fd (before
relocation is run). This way, more IFUNC resolvers which depend on
these variables will work.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
2020-04-24 20:31:15 +00:00
|
|
|
/* args.libc_already_loaded is always assigned by dl_open_worker
|
|
|
|
(before any explicit/non-local returns). */
|
2005-01-06 22:40:27 +00:00
|
|
|
args.argc = argc;
|
|
|
|
args.argv = argv;
|
|
|
|
args.env = env;
|
2005-06-12 16:29:51 +00:00
|
|
|
|
2017-08-10 11:40:22 +00:00
|
|
|
struct dl_exception exception;
|
|
|
|
int errcode = _dl_catch_exception (&exception, dl_open_worker, &args);
|
1996-08-19 01:07:44 +00:00
|
|
|
|
2012-10-03 23:13:14 +00:00
|
|
|
#if defined USE_LDCONFIG && !defined MAP_COPY
|
|
|
|
/* We must unmap the cache file. */
|
2005-01-06 22:40:27 +00:00
|
|
|
_dl_unload_cache ();
|
1998-08-26 00:07:26 +00:00
|
|
|
#endif
|
|
|
|
|
Avoid late failure in dlopen in global scope update [BZ #25112]
The call to add_to_global in dl_open_worker happens after running ELF
constructors for new objects. At this point, proper recovery from
malloc failure would be quite complicated: We would have to run the
ELF destructors and close all opened objects, something that we
currently do not do.
Instead, this change splits add_to_global into two phases,
add_to_global_resize (which can raise an exception, called before ELF
constructors run), and add_to_global_update (which cannot, called
after ELF constructors). A complication arises due to recursive
dlopen: After the inner dlopen consumes some space, the pre-allocation
in the outer dlopen may no longer be sufficient. A new member in the
namespace structure, _ns_global_scope_pending_adds keeps track of the
maximum number of objects that need to be added to the global scope.
This enables the inner add_to_global_resize call to take into account
the needs of an outer dlopen.
Most code in the dynamic linker assumes that the number of global
scope entries fits into an unsigned int (matching the r_nlist member
of struct r_scop_elem). Therefore, change the type of
_ns_global_scope_alloc to unsigned int (from size_t), and add overflow
checks.
Change-Id: Ie08e2f318510d5a6a4bcb1c315f46791b5b77524
2019-10-31 17:25:39 +00:00
|
|
|
/* Do this for both the error and success cases. The old value has
|
|
|
|
only been determined if the namespace ID was assigned (i.e., it
|
|
|
|
is not __LM_ID_CALLER). In the success case, we actually may
|
|
|
|
have consumed more pending adds than planned (because the local
|
|
|
|
scopes overlap in case of a recursive dlopen, the inner dlopen
|
|
|
|
doing some of the globalization work of the outer dlopen), so the
|
|
|
|
old pending adds value is larger than absolutely necessary.
|
|
|
|
Since it is just a conservative upper bound, this is harmless.
|
|
|
|
The top-level dlopen call will restore the field to zero. */
|
|
|
|
if (args.nsid >= 0)
|
|
|
|
GL (dl_ns)[args.nsid]._ns_global_scope_pending_adds
|
|
|
|
= args.original_global_scope_pending_adds;
|
|
|
|
|
2006-10-27 18:43:38 +00:00
|
|
|
/* See if an error occurred during loading. */
|
2017-08-10 11:40:22 +00:00
|
|
|
if (__glibc_unlikely (exception.errstring != NULL))
|
1998-07-13 12:29:13 +00:00
|
|
|
{
|
elf: Implement __libc_early_init
This function is defined in libc.so, and the dynamic loader calls
right after relocation has been finished, before any ELF constructors
or the preinit function is invoked. It is also used in the static
build for initializing parts of the static libc.
To locate __libc_early_init, a direct symbol lookup function is used,
_dl_lookup_direct. It does not search the entire symbol scope and
consults merely a single link map. This function could also be used
to implement lookups in the vDSO (as an optimization).
A per-namespace variable (libc_map) is added for locating libc.so,
to avoid repeated traversals of the search scope. It is similar to
GL(dl_initfirst). An alternative would have been to thread a context
argument from _dl_open down to _dl_map_object_from_fd (where libc.so
is identified). This could have avoided the global variable, but
the change would be larger as a result. It would not have been
possible to use this to replace GL(dl_initfirst) because that global
variable is used to pass the function pointer past the stack switch
from dl_main to the main program. Replacing that requires adding
a new argument to _dl_init, which in turn needs changes to the
architecture-specific libc.so startup code written in assembler.
__libc_early_init should not be used to replace _dl_var_init (as
it exists today on some architectures). Instead, _dl_lookup_direct
should be used to look up a new variable symbol in libc.so, and
that should then be initialized from the dynamic loader, immediately
after the object has been loaded in _dl_map_object_from_fd (before
relocation is run). This way, more IFUNC resolvers which depend on
these variables will work.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
2020-04-24 20:31:15 +00:00
|
|
|
/* Avoid keeping around a dangling reference to the libc.so link
|
|
|
|
map in case it has been cached in libc_map. */
|
|
|
|
if (!args.libc_already_loaded)
|
2021-09-30 17:29:17 +00:00
|
|
|
GL(dl_ns)[args.nsid].libc_map = NULL;
|
elf: Implement __libc_early_init
This function is defined in libc.so, and the dynamic loader calls
right after relocation has been finished, before any ELF constructors
or the preinit function is invoked. It is also used in the static
build for initializing parts of the static libc.
To locate __libc_early_init, a direct symbol lookup function is used,
_dl_lookup_direct. It does not search the entire symbol scope and
consults merely a single link map. This function could also be used
to implement lookups in the vDSO (as an optimization).
A per-namespace variable (libc_map) is added for locating libc.so,
to avoid repeated traversals of the search scope. It is similar to
GL(dl_initfirst). An alternative would have been to thread a context
argument from _dl_open down to _dl_map_object_from_fd (where libc.so
is identified). This could have avoided the global variable, but
the change would be larger as a result. It would not have been
possible to use this to replace GL(dl_initfirst) because that global
variable is used to pass the function pointer past the stack switch
from dl_main to the main program. Replacing that requires adding
a new argument to _dl_init, which in turn needs changes to the
architecture-specific libc.so startup code written in assembler.
__libc_early_init should not be used to replace _dl_var_init (as
it exists today on some architectures). Instead, _dl_lookup_direct
should be used to look up a new variable symbol in libc.so, and
that should then be initialized from the dynamic loader, immediately
after the object has been loaded in _dl_map_object_from_fd (before
relocation is run). This way, more IFUNC resolvers which depend on
these variables will work.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
2020-04-24 20:31:15 +00:00
|
|
|
|
1998-07-13 12:29:13 +00:00
|
|
|
/* Remove the object from memory. It may be in an inconsistent
|
|
|
|
state if relocation failed, for example. */
|
|
|
|
if (args.map)
|
2000-12-31 06:09:08 +00:00
|
|
|
{
|
2015-07-07 15:45:46 +00:00
|
|
|
_dl_close_worker (args.map, true);
|
2019-11-13 14:44:56 +00:00
|
|
|
|
2019-12-13 09:18:46 +00:00
|
|
|
/* All l_nodelete_pending objects should have been deleted
|
|
|
|
at this point, which is why it is not necessary to reset
|
|
|
|
the flag here. */
|
2000-12-31 06:09:08 +00:00
|
|
|
}
|
1998-07-13 12:29:13 +00:00
|
|
|
|
2006-10-27 18:43:38 +00:00
|
|
|
/* Release the lock. */
|
|
|
|
__rtld_lock_unlock_recursive (GL(dl_load_lock));
|
|
|
|
|
1998-07-13 12:29:13 +00:00
|
|
|
/* Reraise the error. */
|
2017-08-10 11:40:22 +00:00
|
|
|
_dl_signal_exception (errcode, &exception, NULL);
|
1998-07-13 12:29:13 +00:00
|
|
|
}
|
|
|
|
|
2023-03-25 21:27:01 +00:00
|
|
|
const int r_state __attribute__ ((unused))
|
|
|
|
= _dl_debug_update (args.nsid)->r_state;
|
|
|
|
assert (r_state == RT_CONSISTENT);
|
2005-01-06 22:40:27 +00:00
|
|
|
|
2006-10-27 18:43:38 +00:00
|
|
|
/* Release the lock. */
|
|
|
|
__rtld_lock_unlock_recursive (GL(dl_load_lock));
|
|
|
|
|
1998-07-13 12:29:13 +00:00
|
|
|
return args.map;
|
Mon Jun 10 06:14:03 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* sysdeps/mach/hurd/dl-sysdep.c (__open): Define this instead of open.
(__close, __mmap): Likewise define with __ names now.
Mon Jun 10 05:13:18 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* elf/dl-support.c: New file.
* elf/Makefile (CFLAGS-dl-support.c): New variable.
(routines, elide-routines.so): Add dl-support.
* elf/dl-minimal.c (_dl_pagesize): Remove common defn.
* elf/dl-load.c (_dl_pagesize): Define it here.
(_dl_map_object_from_fd): Initialize it if zero.
* elf/link.h (_dl_pagesize): Remove const.
Sun Jun 9 04:04:26 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* elf/Makefile (routines): Add dl-symbol.
* elf/dl-lookup.c (_dl_symbol_value): Moved to ...
* elf/dl-symbol.c: New file.
* elf/elf.h (Elf32_Xword, Elf32_Sxword): New types.
(Elf32_Section, Elf64_Section): New types, 16 bits.
(Elf32_Sym, Elf64_Sym): Use it.
* elf/dl-deps.c (_dl_open): Moved to ...
* elf/dl-open.c: New file.
* Makefile (routines): Add dl-open.
* elf/Makefile (dl-routines): New variable.
(routines): Add $(dl-routines).
(elide-routines.so): New variable, set to $(dl-routines).
(libdl-inhibit-o): Variable removed; build all flavors of -ldl.
(rtld-routines): All but rtld, dl-sysdep, and dl-minimal moved to
$(dl-routines).
* elf/dl-lookup.c (_dl_lookup_symbol): Remove magic symbol grokage.
* elf/dladdr.c: Use ELFW(ST_BIND) in place of ELF32_ST_BIND.
* elf/dl-load.c (open_path): Use __ names for open and close. Avoid
using strdup.
(_dl_map_object): Likewise.
(_dl_map_object_from_fd): Use __ names for mmap, munmap, and mprotect.
* elf/dl-minimal.c (malloc): Likewise.
* elf/dl-reloc.c (_dl_relocate_object): Likewise.
* elf/dl-minimal.c (_dl_pagesize): New variable.
(malloc): Use that instead of a static variable.
* elf/dl-reloc.c (_dl_relocate_object): Use _dl_pagesize instead of
calling getpagesize.
* elf/dl-load.c (_dl_map_object_from_fd): Likewise.
* elf/link.h: Declare _dl_pagesize.
* elf/rtld.c (dl_r_debug): Renamed to _dl_r_debug.
* elf/link.h (struct link_map): Use Half for l_phnum instead of Word.
* elf/rtld.c (dl_main): Use Half for phdr count arg.
(_dl_sysdep_start): Update prototype of DL_MAIN function ptr arg.
* elf/dl-load.c (_dl_map_object_from_fd): Use explicit Elf32_Word to
extract 4-byte magic number, not ElfW(Word). Match EI_CLASS against
native wordsize, either 32 or 64.
* elf/elf.h (Elf64_Byte, Elf64_Section): Typedefs removed. In C a
char is always a byte, no need for a typedef. Section indices are
16-bit quantities in elf64, which already have a typedef Elf64_Half.
Remove partial -lelf implementation. There is now a
separately-distributed `libelf' package that implements it.
* elf/dl-lookup.c: Don't #include <libelf.h> any more.
(_dl_elf_hash): New function, moved from
libelf.h:elf_hash.
(_dl_lookup_symbol): Use it instead of elf_hash.
* elf/libelf.h: File removed.
* elf/elf_hash.c: File removed.
* elf/Makefile (headers): Remove libelf.h.
(extra-libs): Remove libelf.
(libelf-routines): Variable removed.
* elf/Makefile (libdl.so): Remove commands from this target. The
implicit rule commands are correct, this explicit rule just serves to
add some dependencies.
* elf/dl-lookup.c (_dl_lookup_symbol): Use ELFW(ST_TYPE) in place of
ELF32_ST_TYPE. Likewise ST_BIND.
* elf/do-rel.h (elf_dynamic_do_rel): Likewise R_SYM.
* elf/link.h (ElfW): New macro for wordsize-independent ElfXX_* type
naming.
(ELFW): New macro, likewise for ELFXX_* macro naming.
(_ElfW, _ElfW_1): New macros, subroutines of ElfW and ELF.
Sat Jun 8 20:52:38 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* elf/link.h, elf/do-rel.h, elf/dynamic-link.h, elf/dl-deps.c,
elf/dl-init.c, elf/dl-load.c, elf/dl-lookup.c, elf/dl-reloc.c,
elf/dl-runtime.c, elf/dladdr.c, elf/dlclose.c, elf/dlsym.c,
elf/linux-compat.c, elf/rtld.c: Change all uses of `Elf32_XXX' to
`ElfW(XXX)' for wordsize-independence.
Sat Jun 8 20:50:42 1996 Richard Henderson <rth@tamu.edu>
* elf/elf.h: Move Elf64_* types in parity with Elf32 counterparts.
(Elf64_auxv_t): New type.
(EM_ALPHA, R_ALPHA_*): New macros for elf64-alpha format.
1996-06-10 10:18:47 +00:00
|
|
|
}
|
1999-01-16 17:09:04 +00:00
|
|
|
|
|
|
|
|
2011-08-14 02:24:08 +00:00
|
|
|
void
|
2011-08-16 20:11:03 +00:00
|
|
|
_dl_show_scope (struct link_map *l, int from)
|
1999-01-16 17:09:04 +00:00
|
|
|
{
|
2011-08-14 02:24:08 +00:00
|
|
|
_dl_debug_printf ("object=%s [%lu]\n",
|
2013-05-29 16:00:20 +00:00
|
|
|
DSO_FILENAME (l->l_name), l->l_ns);
|
2011-08-14 02:24:08 +00:00
|
|
|
if (l->l_scope != NULL)
|
2011-08-16 20:11:03 +00:00
|
|
|
for (int scope_cnt = from; l->l_scope[scope_cnt] != NULL; ++scope_cnt)
|
2011-08-14 02:24:08 +00:00
|
|
|
{
|
2011-08-16 16:35:28 +00:00
|
|
|
_dl_debug_printf (" scope %u:", scope_cnt);
|
2011-08-14 02:24:08 +00:00
|
|
|
|
2011-08-16 15:17:15 +00:00
|
|
|
for (unsigned int cnt = 0; cnt < l->l_scope[scope_cnt]->r_nlist; ++cnt)
|
2011-08-14 02:24:08 +00:00
|
|
|
if (*l->l_scope[scope_cnt]->r_list[cnt]->l_name)
|
|
|
|
_dl_debug_printf_c (" %s",
|
|
|
|
l->l_scope[scope_cnt]->r_list[cnt]->l_name);
|
|
|
|
else
|
2013-05-29 16:00:20 +00:00
|
|
|
_dl_debug_printf_c (" %s", RTLD_PROGNAME);
|
1999-01-16 17:09:04 +00:00
|
|
|
|
2011-08-14 02:24:08 +00:00
|
|
|
_dl_debug_printf_c ("\n");
|
|
|
|
}
|
2011-08-20 19:16:42 +00:00
|
|
|
else
|
|
|
|
_dl_debug_printf (" no scope\n");
|
2011-08-14 02:24:08 +00:00
|
|
|
_dl_debug_printf ("\n");
|
1999-01-16 17:09:04 +00:00
|
|
|
}
|