glibc/sysdeps/unix/sysv/linux/i386/dl-librecon.h
Ulrich Drepper e2102c1422 Update.
1998-03-29 20:59  Ulrich Drepper  <drepper@cygnus.com>

	* elf/Makefile: Fix typo.
	* elf/ldd.bash.in: Collect output of ldd --verify in verify_out.
	* elf/ldd.sh.in: Likewise.
	* elf/ldsodefs.h: Declare _dl_correct_cache_id.
	* elf/rtld.c (dl_main): In --verify mode allow platform specifc action.
	Use strsep correctly.
	(process_envvars): Allow platform specific variables.
	* sysdeps/generic/dl-cache.c (_dl_correct_cache_id): New variable.
	(_dl_load_cache_lookup): Test cache IDs found against
	_dl_correct_cache_id.
	* sysdeps/generic/dl-librecon.h: New file.
	* sysdeps/unix/sysv/linux/dl-librecon.h: New file.

	* sysdeps/unix/sysv/linux/lddlibc4.c: Include error.h.

	* sysdeps/unix/sysv/linux/ldd-rewrite.sed: New file.
1998-03-29 21:14:40 +00:00

58 lines
2.3 KiB
C

/* Optional code to distinguish library flavours.
Copyright (C) 1998 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
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., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#ifndef _DL_LIBRECON_H
#define _DL_LIBRECON_H 1
#define DISTINGUISH_LIB_VERSIONS \
do \
{ \
/* We have to find out whether the binary is linked against \
libc 5 or glibc. We do this by looking at all the DT_NEEDED \
entries. If one is libc.so.5 this is a libc 5 linked binary. */ \
if (main_map->l_info[DT_NEEDED]) \
{ \
/* We have dependencies. */ \
const char *strtab = ((void *) main_map->l_addr \
+ main_map->l_info[DT_STRTAB]->d_un.d_ptr); \
const ElfW(Dyn) *d; \
\
for (d = main_map->l_ld; d->d_tag != DT_NULL; ++d) \
if (d->d_tag == DT_NEEDED \
&& strcmp (strtab + d->d_un.d_val, "libc.so.5") == 0) \
break; \
\
/* We print a `5' or `6' depending on the outcome. */ \
_dl_sysdep_message (d->d_tag != DT_NULL ? "5\n" : "6\n", NULL); \
} \
} \
while (0)
/* Recognizing extra environment variables. */
#define EXTRA_LD_ENVVARS \
case 15: \
if (memcmp (&envline[3], "LIBRARY_VERSION", 15) == 0) \
{ \
_dl_correct_cache_id = envline[19] == '5' ? 2 : 3; \
break; \
}
#endif /* dl-librecon.h */