1999-06-09 11:42:30 +00:00
|
|
|
/* Support for reading /etc/ld.so.cache files written by Linux ldconfig.
|
2015-01-02 16:28:19 +00:00
|
|
|
Copyright (C) 1999-2015 Free Software Foundation, Inc.
|
1999-06-09 11:42:30 +00:00
|
|
|
This file is part of the GNU C Library.
|
|
|
|
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
2001-07-06 04:58:11 +00:00
|
|
|
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.
|
1999-06-09 11:42:30 +00:00
|
|
|
|
|
|
|
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
|
2001-07-06 04:58:11 +00:00
|
|
|
Lesser General Public License for more details.
|
1999-06-09 11:42:30 +00:00
|
|
|
|
2001-07-06 04:58:11 +00:00
|
|
|
You should have received a copy of the GNU Lesser General Public
|
2012-02-09 23:18:22 +00:00
|
|
|
License along with the GNU C Library; if not, see
|
|
|
|
<http://www.gnu.org/licenses/>. */
|
1999-06-09 11:42:30 +00:00
|
|
|
|
2000-09-24 18:35:20 +00:00
|
|
|
#include <stdint.h>
|
|
|
|
|
2000-05-17 11:04:21 +00:00
|
|
|
#ifndef _DL_CACHE_DEFAULT_ID
|
|
|
|
# define _DL_CACHE_DEFAULT_ID 3
|
|
|
|
#endif
|
1999-06-09 11:42:30 +00:00
|
|
|
|
2000-05-17 11:04:21 +00:00
|
|
|
#ifndef _dl_cache_check_flags
|
|
|
|
# define _dl_cache_check_flags(flags) \
|
1999-06-09 11:42:30 +00:00
|
|
|
((flags) == 1 || (flags) == _DL_CACHE_DEFAULT_ID)
|
2000-05-17 11:04:21 +00:00
|
|
|
#endif
|
2000-05-07 21:23:56 +00:00
|
|
|
|
|
|
|
#ifndef LD_SO_CACHE
|
2000-07-12 21:10:41 +00:00
|
|
|
# define LD_SO_CACHE SYSCONFDIR "/ld.so.cache"
|
2000-05-07 21:23:56 +00:00
|
|
|
#endif
|
|
|
|
|
2003-06-25 08:19:44 +00:00
|
|
|
#ifndef add_system_dir
|
|
|
|
# define add_system_dir(dir) add_dir (dir)
|
|
|
|
#endif
|
|
|
|
|
2000-05-07 21:23:56 +00:00
|
|
|
#define CACHEMAGIC "ld.so-1.7.0"
|
|
|
|
|
|
|
|
/* libc5 and glibc 2.0/2.1 use the same format. For glibc 2.2 another
|
|
|
|
format has been added in a compatible way:
|
|
|
|
The beginning of the string table is used for the new table:
|
2000-05-17 11:04:21 +00:00
|
|
|
old_magic
|
2000-05-07 21:23:56 +00:00
|
|
|
nlibs
|
|
|
|
libs[0]
|
|
|
|
...
|
|
|
|
libs[nlibs-1]
|
2000-05-17 11:04:21 +00:00
|
|
|
pad, new magic needs to be aligned
|
|
|
|
- this is string[0] for the old format
|
|
|
|
new magic - this is string[0] for the new format
|
2000-05-07 21:23:56 +00:00
|
|
|
newnlibs
|
|
|
|
...
|
|
|
|
newlibs[0]
|
|
|
|
...
|
|
|
|
newlibs[newnlibs-1]
|
|
|
|
string 1
|
|
|
|
string 2
|
|
|
|
...
|
|
|
|
*/
|
|
|
|
struct file_entry
|
|
|
|
{
|
|
|
|
int flags; /* This is 1 for an ELF library. */
|
|
|
|
unsigned int key, value; /* String table indices. */
|
|
|
|
};
|
|
|
|
|
|
|
|
struct cache_file
|
|
|
|
{
|
|
|
|
char magic[sizeof CACHEMAGIC - 1];
|
|
|
|
unsigned int nlibs;
|
|
|
|
struct file_entry libs[0];
|
|
|
|
};
|
|
|
|
|
|
|
|
#define CACHEMAGIC_NEW "glibc-ld.so.cache"
|
2000-09-24 18:35:20 +00:00
|
|
|
#define CACHE_VERSION "1.1"
|
2000-10-25 17:52:54 +00:00
|
|
|
#define CACHEMAGIC_VERSION_NEW CACHEMAGIC_NEW CACHE_VERSION
|
2000-05-07 21:23:56 +00:00
|
|
|
|
|
|
|
|
|
|
|
struct file_entry_new
|
|
|
|
{
|
2000-09-24 18:35:20 +00:00
|
|
|
int32_t flags; /* This is 1 for an ELF library. */
|
|
|
|
uint32_t key, value; /* String table indices. */
|
Update.
2001-03-12 Jakub Jelinek <jakub@redhat.com>
* csu/Makefile (abi-tag.h): Define OS and version separately, allow
version to be overriden from config.h.
* csu/abi-note.S: Use OS and version separately, include config.h.
* elf/dl-load.c (_dl_osversion): New.
(_dl_map_object_from_fd): Kill some warnings.
(open_verify): Check .note.ABI-tag of the library if present.
* elf/Makefile (CPPFLAGS-dl-load.c): Add -I$(csu-objpfx).
* elf/cache.c (struct cache_entry): Add osversion.
(print_entry): Print osversion.
(print_cache): Pass osversion to it.
(compare): Sort according to osversion.
(save_cache): Set osversion.
(add_to_cache): Add osversion argument.
* sysdeps/generic/ldconfig.h (add_to_cache, process_file,
process_elf_file): Add osversion argument.
* elf/readlib.c (process_file): Likewise.
* sysdeps/generic/readelflib.c (process_elf_file): Likewise.
* sysdeps/unix/sysv/linux/ia64/readelflib.c (process_elf_file,
process_elf32_file, process_elf64_file): Likewise.
* sysdeps/unix/sysv/linux/i386/readelflib.c (process_elf_file,
process_elf32_file, process_elf64_file): Likewise.
* sysdeps/unix/sysv/linux/sparc/readelflib.c (process_elf_file,
process_elf32_file, process_elf64_file): Likewise.
* elf/ldconfig.c (manual_link): Pass it.
(search_dir): Issue diagnostic if two libs with the same soname in
the same directory have different .note.ABI-tag. Record osversion in
dlib_entry and use it from there.
(struct lib_entry): Remove.
(struct dlib_entry): Add osversion.
* sysdeps/generic/dl-cache.c (_dl_load_cache_lookup): Check
osversion.
* sysdeps/generic/dl-cache.h (struct file_entry_new): Replace __unused
field with osversion.
* sysdeps/generic/ldsodefs.h (_dl_osversion): Declare.
* sysdeps/unix/sysv/linux/init-first.c: Include ldsodefs.h.
* sysdeps/unix/sysv/linux/dl-osinfo.h (DL_SYSDEP_OSCHECK): Save kernel
version in _dl_osversion.
* sysdeps/unix/sysv/linux/configure.in: Define __ABI_TAG_VERSION.
* Makerules (build-shlib-helper, build-module-helper): New.
(build-shlib, build-module-helper): Make sure .note.ABI-tag comes
early.
* config.h.in (__ABI_TAG_VERSION): Add.
* elf/dl-minimal.c (__strtoul_internal): Set endptr on return.
* sysdeps/unix/sysv/linux/i386/dl-librecon.h (EXTRA_LD_ENVVARS):
Handle LD_ASSUME_KERNEL.
* sysdeps/unix/sysv/linux/dl-librecon.h: New.
2001-03-16 07:40:05 +00:00
|
|
|
uint32_t osversion; /* Required OS version. */
|
2000-09-24 18:35:20 +00:00
|
|
|
uint64_t hwcap; /* Hwcap entry. */
|
2000-05-07 21:23:56 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
struct cache_file_new
|
|
|
|
{
|
|
|
|
char magic[sizeof CACHEMAGIC_NEW - 1];
|
|
|
|
char version[sizeof CACHE_VERSION - 1];
|
2000-09-24 18:35:20 +00:00
|
|
|
uint32_t nlibs; /* Number of entries. */
|
|
|
|
uint32_t len_strings; /* Size of string table. */
|
|
|
|
uint32_t unused[5]; /* Leave space for future extensions
|
|
|
|
and align to 8 byte boundary. */
|
2000-05-07 21:23:56 +00:00
|
|
|
struct file_entry_new libs[0]; /* Entries describing libraries. */
|
2000-09-24 18:35:20 +00:00
|
|
|
/* After this the string table of size len_strings is found. */
|
2000-05-07 21:23:56 +00:00
|
|
|
};
|
|
|
|
|
2000-05-17 11:04:21 +00:00
|
|
|
/* Used to align cache_file_new. */
|
|
|
|
#define ALIGN_CACHE(addr) \
|
|
|
|
(((addr) + __alignof__ (struct cache_file_new) -1) \
|
|
|
|
& (~(__alignof__ (struct cache_file_new) - 1)))
|
|
|
|
|
2003-06-11 23:22:36 +00:00
|
|
|
extern int _dl_cache_libcmp (const char *p1, const char *p2)
|
2015-10-15 21:04:00 +00:00
|
|
|
internal_function attribute_hidden;
|