They are both used by __libc_freeres to free all library malloc
allocated resources to help tooling like mtrace or valgrind with
memory leak tracking.
The current scheme uses assembly markers and linker script entries
to consolidate the free routine function pointers in the RELRO segment
and to be freed buffers in BSS.
This patch changes it to use specific free functions for
libc_freeres_ptrs buffers and call the function pointer array directly
with call_function_static_weak.
It allows the removal of both the internal macros and the linker
script sections.
Checked on x86_64-linux-gnu, i686-linux-gnu, and aarch64-linux-gnu.
Reviewed-by: Carlos O'Donell <carlos@redhat.com>
I used these shell commands:
../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")
and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 7061 files FOO.
I then removed trailing white space from math/tgmath.h,
support/tst-support-open-dev-null-range.c, and
sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following
obscure pre-commit check failure diagnostics from Savannah. I don't
know why I run into these diagnostics whereas others evidently do not.
remote: *** 912-#endif
remote: *** 913:
remote: *** 914-
remote: *** error: lines with trailing whitespace found
...
remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
I used these shell commands:
../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright
(cd ../glibc && git commit -am"[this commit message]")
and then ignored the output, which consisted lines saying "FOO: warning:
copyright statement not found" for each of 6694 files FOO.
I then removed trailing white space from benchtests/bench-pthread-locks.c
and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this
diagnostic from Savannah:
remote: *** pre-commit check failed ...
remote: *** error: lines with trailing whitespace found
remote: error: hook declined to update refs/heads/master
Both the buffer and struct mntent are now allocated on the heap.
This results in a slight reduction of RSS usage.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
2001-07-06 Paul Eggert <eggert@twinsun.com>
* manual/argp.texi: Remove ignored LGPL copyright notice; it's
not appropriate for documentation anyway.
* manual/libc-texinfo.sh: "Library General Public License" ->
"Lesser General Public License".
2001-07-06 Andreas Jaeger <aj@suse.de>
* All files under GPL/LGPL version 2: Place under LGPL version
2.1.
1997-10-31 23:16 Ulrich Drepper <drepper@cygnus.com>
* posix/glob.c (glob): If calling glob_in_dir for a list which was
generated by a glob call disable GLOB_ERR since there might be
non-directories in the list (PR203).
* posix/glob.h (GLOB_ONLYDIR): New flag.
(__GLOB_FLAGS): Add GLOB_ONLYDIR.
* posix/glob.c: Define HAVE_D_TYPE if _DIRENT_HAVE_D_TYPE is defined.
(glob): Add GLOB_ONLYDIR to recursive call to match dirname.
(glob_in_dir) [HAVE_D_TYPE]: While reading directory entries test
whether they are directories if GLOB_ONLYDIR flag is given.
* manual/pattern.texi: Document GLOB_ONLYDIR.
* misc/Makefile (tests): Add tst-fdset.
* sysdeps/i386/bits/select.h: Rewrite asm macros to be cleaner.
* sysdeps/unix/sysv/linux/Dist: Add xstatconv.c.
* sysdeps/unix/sysv/linux/alpha/Dist: Likewise.
* time/strptime.c (strptime_internal): In %y format, regard years
>= 69 as of twentieth century, all other as of twenty-first.
* time/tzset.c: Correct typo and little optimization.
1997-10-31 16:01 Ulrich Drepper <drepper@cygnus.com>
* inet/getnetgrent.c: Allocate buffer dynamically if needed.
Suggested by Joe Keane <jgk@jgk.org>.
1997-10-31 Andreas Jaeger <aj@arthur.rhein-neckar.de>
* io/ftw.h: Declare __ftw64_func_t and __nftw64_func_t only when
__USE_FILE_OFFSET64 || __USE_LARGEFILE64 is true.
1997-10-30 05:47 Ulrich Drepper <drepper@cygnus.com>
* misc/mntent.c: Don't use statically allocated buffer. Allocate
it dynamically if necessary.
* misc/efgcvt.c: Likewise.
Patch by Joe Keane <jgk@jgk.org>.
* misc/mntent.c: Allow freeing of allocated buffer in
__libc_subfreeres.
* misc/efgcvt.c: Likewise.
* misc/efgcvt.c: Call correct reentrant functions.
Use better values for MAXDIG.
* misc/qefgcvt.c: Use better values for MAXDIG.
1997-10-29 18:48 Richard Henderson <rth@cygnus.com>
* sysdeps/unix/sysv/linux/Makefile [io]: Add xstatconv.
* sysdeps/unix/sysv/linux/alpha/xstatconv.c: New file. Convert
between kernel_stat and the userland version indicated.
* sysdeps/unix/sysv/linux/xstatconv.c: Likewise.
* sysdeps/unix/sysv/linux/bits/stat.h: Define _STAT_VER_KERNEL.
* sysdeps/unix/sysv/linux/fxstat.c: Defer to __xstat_conv. Alias
to __*xstat64 if requested.
* sysdeps/unix/sysv/linux/lxstat.c: Likewise.
* sysdeps/unix/sysv/linux/xstat.c: Likewise.
* sysdeps/unix/sysv/linux/alpha/bits/stat.h: Add struct stat64.
Increment _STAT_VER, and make struct stat the same.
* sysdeps/unix/sysv/linux/alpha/bits/types.h: Add __ino64_t, and
__off64_t. Reorganize.
* sysdeps/unix/sysv/linux/alpha/kernel_stat.h: Add struct glibc2_stat
for backward compatibility. Define XSTAT_IS_XSTAT64.
* sysdeps/unix/sysv/linux/alpha/fxstat64.c: Empty file.
* sysdeps/unix/sysv/linux/alpha/lxstat64.c: Likewise.
* sysdeps/unix/sysv/linux/alpha/xstat64.c: Likewise.
* sysdeps/unix/sysv/linux/alpha/bits/dirent.h (struct dirent): For
consistency, force d_ino to use ino_t and supply padding.
1997-10-29 18:47 Richard Henderson <rth@cygnus.com>
* libio/iofopen.c: Correct weak_alias.
* manual/Makefile (glibc-targets): Variable and targets removed.
Sat Jul 13 23:50:17 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* manual/Makefile (lib): New phony target. Depend on stamp files.
($(objpfx)stamp%-$(subdir)): New rule to create them when necessary.
1996-07-13 Paul Eggert <eggert@twinsun.com>
* time/strftime.c (strftime): Use space padding for %e, %k, %l,
to match Emacs format-time-string specification.
(DO_NUMBER_SPACEPAD): Renamed from DO_NUMBER_NOPAD.
Sat Jul 13 20:17:38 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* elf/dl-deps.c (_dl_map_object_deps): Take new args PRELOADS and
NPRELOADS, vector of `struct link_map *'s; add them to the searchlist
between MAP and its deps.
* elf/link.h: Fix decl.
* elf/rtld.c (dl_main): If not secure, parse LD_PRELOAD for
colon-separated list of names, map those and pass vector of ptrs as
PRELOADS list to _dl_map_object_deps.
* elf/dl-runtime.c (_dl_object_relocation_scope): Pass new args to
_dl_map_object_deps with empty preload list.
* elf/dl-open.c (_dl_open): Likewise.
* sysdeps/mach/hurd/dl-sysdep.c (_dl_sysdep_open_zero_fill): Function
removed.
(__mmap): Pass MACH_PORT_NULL for memobj port when (flags & MAP_ANON).
* sysdeps/generic/dl-sysdep.c (_dl_sysdep_open_zero_fill):
Conditionalize defn on [! MAP_ANON].
* elf/dl-minimal.c (malloc): Conditionalize use of _dl_zerofd
on [! MAP_ANON].
* elf/rtld.c (dl_main): Likewise.
* elf/dl-load.c (_dl_zerofd): Conditionalize defn on [! MAP_ANON].
(_dl_map_object_from_fd): Conditionalize initialization of _dl_zerofd.
* elf/dl-fini.c (_dl_fini): Skip finalizer for executable itself.
Sat Jul 13 02:47:53 1996 David Mosberger-Tang <davidm@azstarnet.com>
* stdlib/random.c (__random): Declare as int32_t to be in sync
with declaration.
* socket/Makefile (headers): Add socketbits.h.
* misc/mntent.c (endmntent): Allow for NULL stream. SunOS does
it that way.
* grp/initgroups.c (initgroups): Add groups that user is a member
of, not the ones he is _not_ a member of.
* nss/nsswitch.c (known_compare): Make known_compare() a static
instead of a local function. The latter are difficult to debug
and slow to execute on certain platforms.
* sysdeps/posix/ttyname_r.c (ttyname_r): Use sizeof (dev) - 1 in
place of sizeof (dev). The size of a literal string includes the
NUL byte.
* sysdeps/unix/getlogin.c (getlogin): Initialize ut_fd with -1.
Thu Jul 11 16:59:10 1996 David Mosberger-Tang <davidm@azstarnet.com>
* misc/mntent.c (addmntent): Seek to end of file before writing
entry. Return 1 on error, not -1.
Tue Jul 9 19:08:05 1996 David Mosberger-Tang <davidm@azstarnet.com>
* sysdeps/unix/sysv/linux/syscalls.list: Mark bdflush as EXTRA
syscall.
Fri Jul 5 18:44:55 1996 David Mosberger-Tang <davidm@azstarnet.com>
* sysdeps/unix/sysv/linux/alpha/ioperm.c (port_to_cpu_addr): Size
shift amount for Jensen must be 5 not 4.
Sat Jul 13 20:04:28 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* socket/sys/socket.h (struct osockaddr): New type.
Sat Jul 13 03:50:53 1996 Ulrich Drepper <drepper@cygnus.com>
* misc/Makefile (routines): Add qefgcvt and qefgcvt_r.
* misc/efgcvt.c, misc/efgcvt_r.c: Change code so that the `double'
and `long double' versions can be generated.
* misc/qefgcvt.c, misc/qefgcvt_r.c: New files. Define macros
so that included efgcvt{,_r}.c file generate `long double'
versions.
* stdlib/stdlib.h: Add prototypes for q[efg]cvt() and q[ef]cvt_r()
functions.
* manual/startup.texi: Document new getsubopt function.
* manual/examples/subopt.c: New example program for documenting
getsubopt function.
Fri Jul 12 23:58:37 1996 Ulrich Drepper <drepper@cygnus.com>
* stdlib/Makefile (routines): Add getsubopt.
* stdlib/stdlib.h: Add prototype for getsubopt.
* stdlib/getsubopt.c: New file. Implement getsubopt function
to handle suboption parsing.
* nss/nss_files/files-service.c (getservbyname): Take second arg PROTO
and check it.
* nss/nss_files/files-XXX.c: Comment fix.
Fri Jul 12 01:28:35 1996 Ulrich Drepper <drepper@cygnus.com>
* nss/getXXent_r.c (GETFUNC_NAME_STRING): Define with name
of reentrant function.
(setup): Pass additional argument with function name we are
looking for.
(SETFUNC_NAME, ENDFUNC_NAME, GETFUNC_NAME): Call setup with
new argument {SET,END,GET}FUNC_NAME_STRING.
* nss/getXXent.c (GETFUNC_NAME): RESULT must be static because
we return a pointer.
Thu Jul 11 18:20:44 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* nss/nss_files/files-parse.c: Add comment about things to #define.
* nss/nss_files/files-hosts.c (NEED_H_ERRNO): Define it.
* nss/nss_files/files-parse.c (STRING_FIELD): Don't flag NUL before
terminator char as an error.
* nss/getXXbyYY_r.c (REENTRANT_NAME): Set *H_ERRNOP, not h_errno.
Thu Jul 11 03:21:10 1996 Ulrich Drepper <drepper@cygnus.com>
* catgets/gencat.c (write_out): Move code to determine new
best size out of inner loop.
Wed Jul 10 05:24:40 1996 David Mosberger-Tang <davidm@azstarnet.com>
* misc/mntent.c: Include <sys/types.h>.
(endmntent): Return 1 one success, 0 on failure.
(getmntent): Chop newline and ignore empty lines.
Mon Jul 8 21:18:40 1996 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* sysdeps/m68k/dl-machine.h (RESOLVE): New macro, defined
differently based on [RTLD_BOOTSTRAP].
(elf_machine_rela): Use it instead of the fn ptr arg directly.
