mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-30 08:40:07 +00:00
63 lines
2.4 KiB
C
63 lines
2.4 KiB
C
/* Optional code to distinguish library flavours.
|
|
Copyright (C) 1998-2017 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 Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef _DL_LIBRECON_H
|
|
|
|
#include <sysdeps/unix/sysv/linux/dl-librecon.h>
|
|
|
|
#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 ElfW(Dyn) *d; \
|
|
const char *strtab; \
|
|
\
|
|
strtab = (const char *) D_PTR (main_map, l_info[DT_STRTAB]); \
|
|
\
|
|
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_printf (d->d_tag != DT_NULL ? "5\n" : "6\n"); \
|
|
} \
|
|
} \
|
|
while (0)
|
|
|
|
/* Recognizing extra environment variables. */
|
|
#define EXTRA_LD_ENVVARS \
|
|
case 15: \
|
|
if (memcmp (envline, "LIBRARY_VERSION", 15) == 0) \
|
|
GLRO(dl_correct_cache_id) = envline[16] == '5' ? 2 : 3; \
|
|
break; \
|
|
|
|
/* Extra unsecure variables. The names are all stuffed in a single
|
|
string which means they have to be terminated with a '\0' explicitly. */
|
|
#define EXTRA_UNSECURE_ENVVARS \
|
|
"LD_AOUT_LIBRARY_PATH\0" \
|
|
"LD_AOUT_PRELOAD\0"
|
|
|
|
#endif /* dl-librecon.h */
|