mirror of
https://sourceware.org/git/glibc.git
synced 2024-09-29 18:47:50 +00:00
2064087b5f
* 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.
154 lines
3.3 KiB
C
154 lines
3.3 KiB
C
/* Operating system support for run-time dynamic linker. Generic Unix version.
|
|
Copyright (C) 1995, 96 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public License as
|
|
published by the Free Software Foundation; either version 2 of the
|
|
License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If
|
|
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
|
|
Cambridge, MA 02139, USA. */
|
|
|
|
#include <elf.h>
|
|
#include <sys/types.h>
|
|
#include <fcntl.h>
|
|
#include <link.h>
|
|
#include <unistd.h>
|
|
#include <stdarg.h>
|
|
#include <string.h>
|
|
|
|
|
|
extern int _dl_argc;
|
|
extern char **_dl_argv;
|
|
extern char **_environ;
|
|
extern void _start (void);
|
|
extern int _dl_secure;
|
|
|
|
ElfW(Addr)
|
|
_dl_sysdep_start (void **start_argptr,
|
|
void (*dl_main) (const ElfW(Phdr) *phdr, ElfW(Word) phnum,
|
|
ElfW(Addr) *user_entry))
|
|
{
|
|
const ElfW(Phdr) *phdr;
|
|
ElfW(Word) phnum;
|
|
ElfW(Addr) user_entry;
|
|
ElfW(auxv_t) *av;
|
|
uid_t uid, euid;
|
|
gid_t gid, egid;
|
|
unsigned int seen;
|
|
|
|
user_entry = (ElfW(Addr)) &_start;
|
|
_dl_argc = *(long *) start_argptr;
|
|
_dl_argv = (char **) start_argptr + 1;
|
|
_environ = &_dl_argv[_dl_argc + 1];
|
|
start_argptr = (void **) _environ;
|
|
while (*start_argptr)
|
|
++start_argptr;
|
|
|
|
seen = 0;
|
|
#define M(type) (1 << (type))
|
|
|
|
for (av = (void *) ++start_argptr;
|
|
av->a_type != AT_NULL;
|
|
seen |= M ((++av)->a_type))
|
|
switch (av->a_type)
|
|
{
|
|
case AT_PHDR:
|
|
phdr = av->a_un.a_ptr;
|
|
break;
|
|
case AT_PHNUM:
|
|
phnum = av->a_un.a_val;
|
|
break;
|
|
case AT_ENTRY:
|
|
user_entry = av->a_un.a_val;
|
|
break;
|
|
case AT_UID:
|
|
uid = av->a_un.a_val;
|
|
break;
|
|
case AT_GID:
|
|
gid = av->a_un.a_val;
|
|
break;
|
|
case AT_EUID:
|
|
euid = av->a_un.a_val;
|
|
break;
|
|
case AT_EGID:
|
|
egid = av->a_un.a_val;
|
|
break;
|
|
}
|
|
|
|
/* Linux doesn't provide us with any of these values on the stack
|
|
when the dynamic linker is run directly as a program. */
|
|
|
|
#define SEE(UID, uid) if ((seen & M (AT_##UID)) == 0) uid = __get##uid ()
|
|
SEE (UID, uid);
|
|
SEE (GID, gid);
|
|
SEE (EUID, euid);
|
|
SEE (EGID, egid);
|
|
|
|
|
|
_dl_secure = uid != euid || gid != egid;
|
|
|
|
#ifdef DL_SYSDEP_INIT
|
|
DL_SYSDEP_INIT;
|
|
#endif
|
|
|
|
(*dl_main) (phdr, phnum, &user_entry);
|
|
return user_entry;
|
|
}
|
|
|
|
void
|
|
_dl_sysdep_start_cleanup (void)
|
|
{
|
|
}
|
|
|
|
#ifndef MAP_ANON
|
|
/* This is only needed if the system doesn't support MAP_ANON. */
|
|
|
|
int
|
|
_dl_sysdep_open_zero_fill (void)
|
|
{
|
|
return __open ("/dev/zero", O_RDONLY);
|
|
}
|
|
#endif
|
|
|
|
void
|
|
_dl_sysdep_fatal (const char *msg, ...)
|
|
{
|
|
va_list ap;
|
|
|
|
va_start (ap, msg);
|
|
do
|
|
{
|
|
size_t len = strlen (msg);
|
|
__write (STDERR_FILENO, msg, len);
|
|
msg = va_arg (ap, const char *);
|
|
} while (msg);
|
|
va_end (ap);
|
|
|
|
_exit (127);
|
|
}
|
|
|
|
|
|
void
|
|
_dl_sysdep_message (const char *msg, ...)
|
|
{
|
|
va_list ap;
|
|
|
|
va_start (ap, msg);
|
|
do
|
|
{
|
|
size_t len = strlen (msg);
|
|
__write (STDOUT_FILENO, msg, len);
|
|
msg = va_arg (ap, const char *);
|
|
} while (msg);
|
|
va_end (ap);
|
|
}
|