diff options
| -rw-r--r-- | sysdeps/generic/dl-cache.c | 86 |
1 files changed, 0 insertions, 86 deletions
diff --git a/sysdeps/generic/dl-cache.c b/sysdeps/generic/dl-cache.c index 20a312fee3..6cd454c7ac 100644 --- a/sysdeps/generic/dl-cache.c +++ b/sysdeps/generic/dl-cache.c @@ -84,89 +84,3 @@ _dl_load_cache_lookup (const char *name) return NULL; } -/* Support for reading /etc/ld.so.cache files written by Linux ldconfig. -Copyright (C) 1996 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 <link.h> -#include <stddef.h> -#include <sys/mman.h> - -/* System-dependent function to read a file's whole contents - in the most convenient manner available. */ -extern void *_dl_sysdep_read_whole_file (const char *filename, - size_t *filesize_ptr, - int mmap_prot); - -#define CACHEMAGIC "ld.so-1.7.0" - -struct cache_file - { - char magic[sizeof CACHEMAGIC - 1]; - unsigned int nlibs; - struct - { - int flags; /* This is 1 for an ELF library. */ - unsigned int key, value; /* String table indices. */ - } libs[0]; - }; - -/* Look up NAME in ld.so.cache and return the file name stored there, - or null if none is found. */ - -const char * -_dl_load_cache_lookup (const char *name) -{ - static struct cache_file *cache; - static size_t cachesize; - unsigned int i; - - if (cache == (void *) -1) - /* Previously looked for the cache file and didn't find it. */ - return NULL; - - if (cache == NULL) - { - /* Read the contents of the file. */ - void *file = _dl_sysdep_read_whole_file ("/etc/ld.so.cache", &cachesize, - PROT_READ); - if (file && cachesize > sizeof *cache && - !memcmp (file, CACHEMAGIC, sizeof CACHEMAGIC - 1)) - /* Looks ok. */ - cache = file; - else - { - if (file) - __munmap (file, cachesize); - cache = (void *) -1; - return NULL; - } - } - - for (i = 0; i < cache->nlibs; ++i) - if (cache->libs[i].flags == 1 && /* ELF library entry. */ - /* Make sure string table indices are not bogus before using them. */ - cache->libs[i].key < cachesize - sizeof *cache && - cache->libs[i].value < cachesize - sizeof *cache && - /* Does the name match? */ - ! strcmp (name, ((const char *) &cache->libs[cache->nlibs] + - cache->libs[i].key))) - return (const char *) &cache->libs[cache->nlibs] + cache->libs[i].value; - - return NULL; -} |