diff options
Diffstat (limited to 'REORG.TODO/sysdeps/generic/dl-cache.h')
| -rw-r--r-- | REORG.TODO/sysdeps/generic/dl-cache.h | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/generic/dl-cache.h b/REORG.TODO/sysdeps/generic/dl-cache.h new file mode 100644 index 0000000000..1f0b8f629d --- /dev/null +++ b/REORG.TODO/sysdeps/generic/dl-cache.h @@ -0,0 +1,104 @@ +/* Support for reading /etc/ld.so.cache files written by Linux ldconfig. + Copyright (C) 1999-2017 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 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/>. */ + +#include <stdint.h> + +#ifndef _DL_CACHE_DEFAULT_ID +# define _DL_CACHE_DEFAULT_ID 3 +#endif + +#ifndef _dl_cache_check_flags +# define _dl_cache_check_flags(flags) \ + ((flags) == 1 || (flags) == _DL_CACHE_DEFAULT_ID) +#endif + +#ifndef LD_SO_CACHE +# define LD_SO_CACHE SYSCONFDIR "/ld.so.cache" +#endif + +#ifndef add_system_dir +# define add_system_dir(dir) add_dir (dir) +#endif + +#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: + old_magic + nlibs + libs[0] + ... + libs[nlibs-1] + 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 + 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" +#define CACHE_VERSION "1.1" +#define CACHEMAGIC_VERSION_NEW CACHEMAGIC_NEW CACHE_VERSION + + +struct file_entry_new +{ + int32_t flags; /* This is 1 for an ELF library. */ + uint32_t key, value; /* String table indices. */ + uint32_t osversion; /* Required OS version. */ + uint64_t hwcap; /* Hwcap entry. */ +}; + +struct cache_file_new +{ + char magic[sizeof CACHEMAGIC_NEW - 1]; + char version[sizeof CACHE_VERSION - 1]; + 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. */ + struct file_entry_new libs[0]; /* Entries describing libraries. */ + /* After this the string table of size len_strings is found. */ +}; + +/* Used to align cache_file_new. */ +#define ALIGN_CACHE(addr) \ +(((addr) + __alignof__ (struct cache_file_new) -1) \ + & (~(__alignof__ (struct cache_file_new) - 1))) + +extern int _dl_cache_libcmp (const char *p1, const char *p2) + internal_function attribute_hidden; |