diff options
Diffstat (limited to 'sysdeps/generic')
| -rw-r--r-- | sysdeps/generic/dl-cache.c | 2 | ||||
| -rw-r--r-- | sysdeps/generic/dl-cache.h | 2 | ||||
| -rw-r--r-- | sysdeps/generic/ldconfig.h | 10 | ||||
| -rw-r--r-- | sysdeps/generic/ldsodefs.h | 3 | ||||
| -rw-r--r-- | sysdeps/generic/readelflib.c | 22 |
5 files changed, 31 insertions, 8 deletions
diff --git a/sysdeps/generic/dl-cache.c b/sysdeps/generic/dl-cache.c index 5e16f2852a..65135d467d 100644 --- a/sysdeps/generic/dl-cache.c +++ b/sysdeps/generic/dl-cache.c @@ -228,6 +228,8 @@ _dl_load_cache_lookup (const char *name) /* Only accept hwcap if it's for the right platform. */ #define HWCAP_CHECK \ + if (_dl_osversion && cache_new->libs[middle].osversion > _dl_osversion) \ + continue; \ if (_DL_PLATFORMS_COUNT && platform != -1 \ && (cache_new->libs[middle].hwcap & _DL_HWCAP_PLATFORM) != 0 \ && (cache_new->libs[middle].hwcap & _DL_HWCAP_PLATFORM) != platform) \ diff --git a/sysdeps/generic/dl-cache.h b/sysdeps/generic/dl-cache.h index 2d02dcf347..7938fc0b4a 100644 --- a/sysdeps/generic/dl-cache.h +++ b/sysdeps/generic/dl-cache.h @@ -76,7 +76,7 @@ struct file_entry_new { int32_t flags; /* This is 1 for an ELF library. */ uint32_t key, value; /* String table indices. */ - uint32_t __unused; /* Align next field always on 8 byte boundary. */ + uint32_t osversion; /* Required OS version. */ uint64_t hwcap; /* Hwcap entry. */ }; diff --git a/sysdeps/generic/ldconfig.h b/sysdeps/generic/ldconfig.h index aaad06de5d..0575f48c4b 100644 --- a/sysdeps/generic/ldconfig.h +++ b/sysdeps/generic/ldconfig.h @@ -39,17 +39,17 @@ extern void init_cache (void); extern void save_cache (const char *cache_name); extern void add_to_cache (const char *path, const char *lib, int flags, - uint64_t hwcap); + unsigned int osversion, uint64_t hwcap); /* Declared in readlib.c. */ extern int process_file (const char *real_file_name, const char *file_name, - const char *lib, int *flag, char **soname, - int is_link); + const char *lib, int *flag, unsigned int *osversion, + char **soname, int is_link); /* Declared in readelflib.c. */ extern int process_elf_file (const char *file_name, const char *lib, int *flag, - char **soname, void *file_contents, - size_t file_length); + unsigned int *osversion, char **soname, + void *file_contents, size_t file_length); /* Declared in chroot_canon.c. */ extern char *chroot_canon (const char *chroot, const char *name); diff --git a/sysdeps/generic/ldsodefs.h b/sysdeps/generic/ldsodefs.h index 0575eaf9a9..bcdcf7dd4f 100644 --- a/sysdeps/generic/ldsodefs.h +++ b/sysdeps/generic/ldsodefs.h @@ -173,6 +173,9 @@ extern char **_dl_argv; /* Cached value of `getpagesize ()'. */ extern size_t _dl_pagesize; +/* OS version. */ +extern unsigned int _dl_osversion; + /* File descriptor referring to the zero-fill device. */ extern int _dl_zerofd; diff --git a/sysdeps/generic/readelflib.c b/sysdeps/generic/readelflib.c index 2797c282f5..5354526a25 100644 --- a/sysdeps/generic/readelflib.c +++ b/sysdeps/generic/readelflib.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1999, 2000 Free Software Foundation, Inc. +/* Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Andreas Jaeger <aj@suse.de>, 1999 and Jakub Jelinek <jakub@redhat.com>, 1999. @@ -41,7 +41,8 @@ do \ /* Returns 0 if everything is ok, != 0 in case of error. */ int process_elf_file (const char *file_name, const char *lib, int *flag, - char **soname, void *file_contents, size_t file_length) + unsigned int *osversion, char **soname, void *file_contents, + size_t file_length) { int i; unsigned int j; @@ -56,6 +57,7 @@ process_elf_file (const char *file_name, const char *lib, int *flag, char *dynamic_strings; elf_header = (ElfW(Ehdr) *) file_contents; + *osversion = 0; if (elf_header->e_ident [EI_CLASS] != ElfW (CLASS)) { @@ -110,6 +112,7 @@ process_elf_file (const char *file_name, const char *lib, int *flag, dynamic_addr = segment->p_offset; dynamic_size = segment->p_filesz; break; + case PT_INTERP: program_interpreter = (char *) (file_contents + segment->p_offset); check_ptr (program_interpreter); @@ -123,6 +126,21 @@ process_elf_file (const char *file_name, const char *lib, int *flag, break; } break; + + case PT_NOTE: + if (!*osversion && segment->p_filesz == 32 && segment->p_align >= 4) + { + ElfW(Word) *abi_note = (ElfW(Word) *) (file_contents + + segment->p_offset); + if (abi_note [0] == 4 && abi_note [1] == 16 && abi_note [2] == 1 + && memcmp (abi_note + 3, "GNU", 4) == 0) + *osversion = (abi_note [4] << 24) | + ((abi_note [5] & 0xff) << 16) | + ((abi_note [6] & 0xff) << 8) | + (abi_note [7] & 0xff); + } + break; + default: break; } |