diff options
Diffstat (limited to 'elf/rtld.c')
| -rw-r--r-- | elf/rtld.c | 55 |
1 files changed, 38 insertions, 17 deletions
@@ -26,6 +26,7 @@ #include <stdio-common/_itoa.h> #include <entry.h> #include "dynamic-link.h" +#include "dl-librecon.h" #include <assert.h> @@ -468,17 +469,30 @@ of this helper program; chances are you did not intend to run this program.\n\ else assert (_dl_rtld_map.l_libname); /* How else did we get here? */ - if (mode == verify) - /* We were called just to verify that this is a dynamic executable - using us as the program interpreter. */ - _exit (main_map->l_ld == NULL ? 1 : has_interp ? 0 : 2); - /* Extract the contents of the dynamic section for easy access. */ elf_get_dynamic_info (main_map->l_ld, main_map->l_info); if (main_map->l_info[DT_HASH]) /* Set up our cache of pointers into the hash table. */ _dl_setup_hash (main_map); + if (mode == verify) + { + /* We were called just to verify that this is a dynamic + executable using us as the program interpreter. Exit with an + error if we were not able to load the binary or no interpreter + is specified (i.e., this is no dynamically linked binary. */ + if (main_map->l_ld == NULL) + _exit (1); + if (!has_interp) + _exit (2); + + /* We allow here some platform specific code. */ +#ifdef DISTINGUISH_LIB_VERSIONS + DISTINGUISH_LIB_VERSIONS; +#endif + _exit (0); + } + if (*user_entry != (ElfW(Addr)) &ENTRY_POINT) /* Initialize the data structures for the search paths for shared objects. */ @@ -511,7 +525,8 @@ of this helper program; chances are you did not intend to run this program.\n\ char *list = strdupa (preloadlist); char *p; while ((p = strsep (&list, " :")) != NULL) - if (! __libc_enable_secure || strchr (p, '/') == NULL) + if (p[0] != '\0' + && (! __libc_enable_secure || strchr (p, '/') == NULL)) { struct link_map *new_map = _dl_map_object (main_map, p, 1, lt_library, 0); @@ -571,18 +586,16 @@ of this helper program; chances are you did not intend to run this program.\n\ if (file != problem) { char *p; - runp = file + strspn (file, ": \t\n"); + runp = file; while ((p = strsep (&runp, ": \t\n")) != NULL) - { - struct link_map *new_map = _dl_map_object (main_map, p, 1, - lt_library, 0); - if (new_map->l_opencount == 1) - /* It is no duplicate. */ - ++npreloads; - - if (runp != NULL) - runp += strspn (runp, ": \t\n"); - } + if (p[0] != '\0') + { + struct link_map *new_map = _dl_map_object (main_map, p, 1, + lt_library, 0); + if (new_map->l_opencount == 1) + /* It is no duplicate. */ + ++npreloads; + } } if (problem != NULL) @@ -1127,6 +1140,14 @@ process_envvars (enum mode *modep, int *lazyp) if (memcmp (&envline[3], "TRACE_LOADED_OBJECTS", 20) == 0) mode = trace; break; + + /* We might have some extra environment variable to handle. This + is tricky due to the pre-processing of the length of the name + in the switch statement here. The code here assumes that added + environment variables have a different length. */ +#ifdef EXTRA_LD_ENVVARS + EXTRA_LD_ENVVARS +#endif } } |