| /* Optional code to distinguish library flavours. |
| Copyright (C) 1998, 2001 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, 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 (_dl_loaded->l_info[DT_NEEDED]) \ |
| { \ |
| /* We have dependencies. */ \ |
| const ElfW(Dyn) *d; \ |
| const char *strtab; \ |
| \ |
| strtab = (const char *) D_PTR (_dl_loaded, l_info[DT_STRTAB]); \ |
| \ |
| for (d = _dl_loaded->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 13: \ |
| if (memcmp (envline, "ASSUME_KERNEL", 13) == 0) \ |
| { \ |
| unsigned long int i, j, osversion = 0; \ |
| char *p = &envline[14], *q; \ |
| \ |
| for (i = 0; i < 3; i++, p = q + 1) \ |
| { \ |
| j = __strtoul_internal (p, &q, 0, 0); \ |
| if (j >= 255 || p == q || (i < 2 && *q && *q != '.')) \ |
| { \ |
| osversion = 0; \ |
| break; \ |
| } \ |
| osversion |= j << (16 - 8 * i); \ |
| if (!*q) \ |
| break; \ |
| } \ |
| if (osversion) \ |
| _dl_osversion = osversion; \ |
| break; \ |
| } \ |
| \ |
| case 15: \ |
| if (memcmp (envline, "LIBRARY_VERSION", 15) == 0) \ |
| { \ |
| _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 */ |