diff options
Diffstat (limited to 'REORG.TODO/sysdeps/unix/sysv/linux/i386/dl-librecon.h')
| -rw-r--r-- | REORG.TODO/sysdeps/unix/sysv/linux/i386/dl-librecon.h | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/unix/sysv/linux/i386/dl-librecon.h b/REORG.TODO/sysdeps/unix/sysv/linux/i386/dl-librecon.h new file mode 100644 index 0000000000..5f91009a4c --- /dev/null +++ b/REORG.TODO/sysdeps/unix/sysv/linux/i386/dl-librecon.h @@ -0,0 +1,62 @@ +/* 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 */ |