diff options
Diffstat (limited to 'elf/rtld.c')
| -rw-r--r-- | elf/rtld.c | 41 |
1 files changed, 30 insertions, 11 deletions
@@ -1,5 +1,5 @@ /* Run time dynamic linker. - Copyright (C) 1995-2006, 2007, 2008, 2009 Free Software Foundation, Inc. + Copyright (C) 1995-2006, 2007, 2008, 2009, 2010 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 @@ -182,7 +182,7 @@ extern struct rtld_global_ro _rtld_local_ro static void dl_main (const ElfW(Phdr) *phdr, ElfW(Word) phnum, - ElfW(Addr) *user_entry); + ElfW(Addr) *user_entry, ElfW(auxv_t) *auxv); /* These two variables cannot be moved into .data.rel.ro. */ static struct libname_list _dl_rtld_libname; @@ -882,7 +882,8 @@ static int version_info attribute_relro; static void dl_main (const ElfW(Phdr) *phdr, ElfW(Word) phnum, - ElfW(Addr) *user_entry) + ElfW(Addr) *user_entry, + ElfW(auxv_t) *auxv) { const ElfW(Phdr) *ph; enum mode mode; @@ -927,6 +928,8 @@ dl_main (const ElfW(Phdr) *phdr, if (*user_entry == (ElfW(Addr)) ENTRY_POINT) { + ElfW(auxv_t) *av; + /* Ho ho. We are not the program interpreter! We are the program itself! This means someone ran ld.so as a command. Well, that might be convenient to do sometimes. We support it by @@ -1013,11 +1016,11 @@ of this helper program; chances are you did not intend to run this program.\n\ \n\ --list list all dependencies and how they are resolved\n\ --verify verify that given object really is a dynamically linked\n\ - object we can handle\n\ + object we can handle\n\ --library-path PATH use given PATH instead of content of the environment\n\ - variable LD_LIBRARY_PATH\n\ + variable LD_LIBRARY_PATH\n\ --inhibit-rpath LIST ignore RUNPATH and RPATH information in object names\n\ - in LIST\n\ + in LIST\n\ --audit LIST use objects named in LIST as auditors\n"); ++_dl_skip_args; @@ -1082,6 +1085,22 @@ of this helper program; chances are you did not intend to run this program.\n\ makes sense to free the old string first. */ main_map->l_name = (char *) ""; *user_entry = main_map->l_entry; + + /* Adjust the on-stack auxiliary vector so that it looks like the + binary was executed directly. */ + for (av = auxv; av->a_type != AT_NULL; av++) + switch (av->a_type) + { + case AT_PHDR: + av->a_un.a_val = phdr; + break; + case AT_PHNUM: + av->a_un.a_val = phnum; + break; + case AT_ENTRY: + av->a_un.a_val = *user_entry; + break; + } } else { @@ -2013,7 +2032,7 @@ ERROR: ld.so: object '%s' cannot be loaded as audit interface: %s; ignored.\n", _dl_relocate_object (&GL(dl_rtld_map), main_map->l_scope, 0, 0); } - } + } #define VERNEEDTAG (DT_NUM + DT_THISPROCNUM + DT_VERSIONTAGIDX (DT_VERNEED)) if (version_info) { @@ -2682,10 +2701,10 @@ process_envvars (enum mode *modep) while (*nextp != '\0'); if (__access ("/etc/suid-debug", F_OK) != 0) - { + { unsetenv ("MALLOC_CHECK_"); GLRO(dl_debug_mask) = 0; - } + } if (mode != normal) _exit (5); @@ -2752,7 +2771,7 @@ print_statistics (hp_timing_t *rtld_total_timep) } *wp = '\0'; _dl_debug_printf ("\ - time needed for relocation: %s (%s%%)\n", buf, pbuf); + time needed for relocation: %s (%s%%)\n", buf, pbuf); } #endif @@ -2815,7 +2834,7 @@ print_statistics (hp_timing_t *rtld_total_timep) } *wp = '\0'; _dl_debug_printf ("\ - time needed to load objects: %s (%s%%)\n", + time needed to load objects: %s (%s%%)\n", buf, pbuf); } #endif |