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| author | Ulrich Drepper <drepper@redhat.com> | 2004-01-24 08:36:13 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2004-01-24 08:36:13 +0000 |
| commit | e8648a5a87fd0c472cb6002df8111b9a8ec3fba6 (patch) | |
| tree | 87992735d4b94569a7938455ff304b630b66b8f0 | |
| parent | 75631a576303d3bf23c0db077dcf5dc15c863063 (diff) | |
| download | glibc-e8648a5a87fd0c472cb6002df8111b9a8ec3fba6.zip glibc-e8648a5a87fd0c472cb6002df8111b9a8ec3fba6.tar.gz glibc-e8648a5a87fd0c472cb6002df8111b9a8ec3fba6.tar.bz2 | |
Update.
2004-01-22 Jakub Jelinek <jakub@redhat.com>
* elf/dl-reloc.c (_dl_relocate_object): Move PT_GNU_RELRO protection
into...
(_dl_protect_relro): New routine.
* sysdeps/generic/ldsodefs.h (_dl_protect_relro): New prototype.
* elf/rtld.c (_dl_start_final): Copy l_relro_addr and l_relro_size
from bootstrap_map.
(_dl_main): Don't set GL(_dl_loaded)->l_relro_{addr,size} here.
Call _dl_protect_relro for libraries if prelinking.
| -rw-r--r-- | ChangeLog | 13 | ||||
| -rw-r--r-- | elf/rtld.c | 13 | ||||
| -rw-r--r-- | sysdeps/generic/ldsodefs.h | 4 |
3 files changed, 22 insertions, 8 deletions
@@ -1,3 +1,14 @@ +2004-01-22 Jakub Jelinek <jakub@redhat.com> + + * elf/dl-reloc.c (_dl_relocate_object): Move PT_GNU_RELRO protection + into... + (_dl_protect_relro): New routine. + * sysdeps/generic/ldsodefs.h (_dl_protect_relro): New prototype. + * elf/rtld.c (_dl_start_final): Copy l_relro_addr and l_relro_size + from bootstrap_map. + (_dl_main): Don't set GL(_dl_loaded)->l_relro_{addr,size} here. + Call _dl_protect_relro for libraries if prelinking. + 2004-01-23 Richard Henderson <rth@redhat.com> * Versions.def (libm): Replace GLIBC_2.3.3 with GLIBC_2.3.4. @@ -10,8 +21,6 @@ * sysdeps/ieee754/dbl-64/e_pow.c (log2): Rename to my_log2 to avoid warnings for builtin function log2. -2004-01-22 Andreas Jaeger <aj@suse.de> - * sysdeps/unix/sysv/linux/x86_64/setcontext.S: Add proper unwind information. @@ -224,6 +224,8 @@ _dl_start_final (void *arg, struct dl_start_final_info *info) memcpy (GL(dl_rtld_map).l_info, info->l.l_info, sizeof GL(dl_rtld_map).l_info); GL(dl_rtld_map).l_mach = info->l.l_mach; + GL(dl_rtld_map).l_relro_addr = info->l.l_relro_addr; + GL(dl_rtld_map).l_relro_size = info->l.l_relro_size; #endif _dl_setup_hash (&GL(dl_rtld_map)); GL(dl_rtld_map).l_opencount = 1; @@ -794,11 +796,6 @@ of this helper program; chances are you did not intend to run this program.\n\ GL(dl_stack_flags) = ph->p_flags; break; } - else if (ph->p_type == PT_GNU_RELRO) - { - GL(dl_loaded)->l_relro_addr = ph->p_vaddr; - GL(dl_loaded)->l_relro_size = ph->p_memsz; - } if (__builtin_expect (mode, normal) == verify) { @@ -1676,7 +1673,11 @@ cannot allocate TLS data structures for initial thread"); /* Mark all the objects so we know they have been already relocated. */ for (l = GL(dl_loaded); l != NULL; l = l->l_next) - l->l_relocated = 1; + { + l->l_relocated = 1; + if (l->l_relro_size) + _dl_protect_relro (l); + } _dl_sysdep_start_cleanup (); } diff --git a/sysdeps/generic/ldsodefs.h b/sysdeps/generic/ldsodefs.h index a05e5c7..eed7893 100644 --- a/sysdeps/generic/ldsodefs.h +++ b/sysdeps/generic/ldsodefs.h @@ -697,6 +697,10 @@ extern void _dl_relocate_object_internal (struct link_map *map, int lazy, int consider_profiling) attribute_hidden; +/* Protect PT_GNU_RELRO area. */ +extern void _dl_protect_relro (struct link_map *map) + internal_function attribute_hidden; + /* Call _dl_signal_error with a message about an unhandled reloc type. TYPE is the result of ELFW(R_TYPE) (r_info), i.e. an R_<CPU>_* value. PLT is nonzero if this was a PLT reloc; it just affects the message. */ |