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Update.
2000-04-03 Ulrich Drepper <drepper@redhat.com> * elf/dl-load.c (_dl_init_paths): Use (void*) -1 to signal non-existing RUNPATH, RPATH, and LD_LIBRARY_PATH. (open_path): Change type of fourth parameter. Make pointer to array of pointers. Create variable dirs with original type. Track whether any directory for the object exists and if not, change *DIRSP to (void*) -1 to signal there is no such search path. (_dl_map_object): Change all calls of open_path. Rewrite decompose_rpath calls.
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Ulrich Drepper
parent
42ba2c1158
commit
152e7964d6
11
ChangeLog
11
ChangeLog
@ -1,3 +1,14 @@
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2000-04-03 Ulrich Drepper <drepper@redhat.com>
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* elf/dl-load.c (_dl_init_paths): Use (void*) -1 to signal non-existing
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RUNPATH, RPATH, and LD_LIBRARY_PATH.
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(open_path): Change type of fourth parameter. Make pointer to array
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of pointers. Create variable dirs with original type.
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Track whether any directory for the object exists and if not,
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change *DIRSP to (void*) -1 to signal there is no such search path.
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(_dl_map_object): Change all calls of open_path.
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Rewrite decompose_rpath calls.
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2000-03-31 Andreas Schwab <schwab@suse.de>
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* string/strfry.c: Declare STATE as array of char instead of int
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109
elf/dl-load.c
109
elf/dl-load.c
@ -596,11 +596,11 @@ _dl_init_paths (const char *llp)
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l, "RUNPATH");
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/* The RPATH is ignored. */
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l->l_rpath_dirs = NULL;
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l->l_rpath_dirs = (void *) -1;
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}
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else
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{
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l->l_runpath_dirs = NULL;
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l->l_runpath_dirs = (void *) -1;
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if (l->l_info[DT_RPATH])
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/* Allocate room for the search path and fill in information
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@ -610,7 +610,7 @@ _dl_init_paths (const char *llp)
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+ l->l_info[DT_RPATH]->d_un.d_val),
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l, "RPATH");
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else
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l->l_rpath_dirs = NULL;
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l->l_rpath_dirs = (void *) -1;
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}
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}
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#endif /* SHARED */
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@ -639,6 +639,8 @@ _dl_init_paths (const char *llp)
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(void) fillin_rpath (local_strdup (llp), env_path_list, ":;",
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__libc_enable_secure, "LD_LIBRARY_PATH", NULL);
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}
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else
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env_path_list = (void *) -1;
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}
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@ -1159,18 +1161,14 @@ print_search_path (struct r_search_path_elem **list,
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static int
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open_path (const char *name, size_t namelen, int preloaded,
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struct r_search_path_elem **dirs,
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struct r_search_path_elem ***dirsp,
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char **realname)
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{
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struct r_search_path_elem **dirs = *dirsp;
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char *buf;
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int fd = -1;
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const char *current_what = NULL;
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if (dirs == NULL || *dirs == NULL)
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{
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__set_errno (ENOENT);
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return -1;
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}
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int any = 0;
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buf = alloca (max_dirnamelen + max_capstrlen + namelen);
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do
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@ -1228,6 +1226,9 @@ open_path (const char *name, size_t namelen, int preloaded,
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}
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}
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/* Remember whether we found any existing directory. */
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any |= this_dir->status[cnt] == existing;
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if (fd != -1 && preloaded && __libc_enable_secure)
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{
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/* This is an extra security effort to make sure nobody can
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@ -1272,6 +1273,13 @@ open_path (const char *name, size_t namelen, int preloaded,
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}
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while (*++dirs != NULL);
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/* Remove the whole path if none of the directories exists. */
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if (! any)
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{
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free (*dirsp);
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*dirsp = (void *) -1;
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}
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return -1;
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}
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@ -1340,50 +1348,68 @@ _dl_map_object (struct link_map *loader, const char *name, int preloaded,
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/* First try the DT_RPATH of the dependent object that caused NAME
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to be loaded. Then that object's dependent, and on up. */
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for (l = loader; fd == -1 && l; l = l->l_loader)
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if (l->l_info[DT_RPATH])
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{
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/* Make sure the cache information is available. */
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if (l->l_rpath_dirs == NULL)
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{
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size_t ptrval = (D_PTR (l, l_info[DT_STRTAB])
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+ l->l_info[DT_RPATH]->d_un.d_val);
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l->l_rpath_dirs =
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decompose_rpath ((const char *) ptrval, l, "RPATH");
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}
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{
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if (l->l_rpath_dirs == NULL)
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{
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if (l->l_info[DT_RPATH] == NULL)
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/* There is no path. */
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l->l_rpath_dirs = (void *) -1;
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else
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{
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/* Make sure the cache information is available. */
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size_t ptrval = (D_PTR (l, l_info[DT_STRTAB])
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+ l->l_info[DT_RPATH]->d_un.d_val);
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l->l_rpath_dirs =
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decompose_rpath ((const char *) ptrval, l,
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"RPATH");
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if (l->l_rpath_dirs != NULL)
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fd = open_path (name, namelen, preloaded, l->l_rpath_dirs,
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&realname);
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}
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if (l->l_rpath_dirs != (void *) -1)
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fd = open_path (name, namelen, preloaded,
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&l->l_rpath_dirs, &realname);
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}
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}
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else if (l->l_rpath_dirs != (void *) -1)
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fd = open_path (name, namelen, preloaded, &l->l_rpath_dirs,
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&realname);
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}
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/* If dynamically linked, try the DT_RPATH of the executable
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itself. */
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l = _dl_loaded;
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if (fd == -1 && l && l->l_type != lt_loaded && l != loader
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&& l->l_rpath_dirs != NULL)
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fd = open_path (name, namelen, preloaded, l->l_rpath_dirs,
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&& l->l_rpath_dirs != (void *) -1)
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fd = open_path (name, namelen, preloaded, &l->l_rpath_dirs,
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&realname);
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}
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/* Try the LD_LIBRARY_PATH environment variable. */
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if (fd == -1 && env_path_list != NULL)
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fd = open_path (name, namelen, preloaded, env_path_list, &realname);
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if (fd == -1 && env_path_list != (void *) -1)
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fd = open_path (name, namelen, preloaded, &env_path_list, &realname);
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/* Look at the RUNPATH informaiton for this binary. */
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if (loader != NULL && loader->l_info[DT_RUNPATH])
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if (loader != NULL && loader->l_runpath_dirs != (void *) -1)
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{
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/* Make sure the cache information is available. */
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if (loader->l_runpath_dirs == NULL)
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{
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size_t ptrval = (D_PTR (loader, l_info[DT_STRTAB])
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+ loader->l_info[DT_RUNPATH]->d_un.d_val);
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loader->l_runpath_dirs =
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decompose_rpath ((const char *) ptrval, loader, "RUNPATH");
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}
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if (loader->l_runpath_dirs == NULL)
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{
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if (loader->l_info[DT_RUNPATH] == NULL)
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/* No RUNPATH. */
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loader->l_runpath_dirs = (void *) -1;
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else
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{
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/* Make sure the cache information is available. */
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size_t ptrval = (D_PTR (loader, l_info[DT_STRTAB])
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+ loader->l_info[DT_RUNPATH]->d_un.d_val);
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loader->l_runpath_dirs =
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decompose_rpath ((const char *) ptrval, loader, "RUNPATH");
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if (loader->l_runpath_dirs != NULL)
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fd = open_path (name, namelen, preloaded, loader->l_runpath_dirs,
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&realname);
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if (loader->l_runpath_dirs != (void *) -1)
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fd = open_path (name, namelen, preloaded,
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&loader->l_runpath_dirs, &realname);
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}
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}
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else if (loader->l_runpath_dirs != (void *) -1)
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fd = open_path (name, namelen, preloaded,
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&loader->l_runpath_dirs, &realname);
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}
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if (fd == -1)
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@ -1409,7 +1435,8 @@ _dl_map_object (struct link_map *loader, const char *name, int preloaded,
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/* Finally, try the default path. */
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if (fd == -1)
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fd = open_path (name, namelen, preloaded, rtld_search_dirs, &realname);
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fd = open_path (name, namelen, preloaded, &rtld_search_dirs,
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&realname);
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/* Add another newline when we a tracing the library loading. */
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if (__builtin_expect (_dl_debug_libs, 0))
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