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-rw-r--r--elf/dl-load.c115
1 files changed, 75 insertions, 40 deletions
diff --git a/elf/dl-load.c b/elf/dl-load.c
index f0af292..ce3bd9f 100644
--- a/elf/dl-load.c
+++ b/elf/dl-load.c
@@ -94,6 +94,11 @@ size_t _dl_pagesize;
extern const char *_dl_platform;
extern size_t _dl_platformlen;
+/* This is a fake list to store the RPATH information for static
+ binaries. */
+static struct r_search_path_elem **fake_path_list;
+
+
/* Local version of `strdup' function. */
static inline char *
local_strdup (const char *s)
@@ -308,6 +313,12 @@ decompose_rpath (const char *rpath, size_t additional_room)
void
_dl_init_paths (void)
{
+ static const char *trusted_dirs[] =
+ {
+#include "trusted-dirs.h"
+ NULL
+ };
+
struct r_search_path_elem **pelem;
/* We have in `search_path' the information about the RPATH of the
@@ -333,53 +344,72 @@ _dl_init_paths (void)
nllp = 0;
l = _dl_loaded;
- if (l && l->l_type != lt_loaded && l->l_info[DT_RPATH])
+ if (l != NULL)
{
- /* Allocate room for the search path and fill in information from
- RPATH. */
- l->l_rpath_dirs =
- decompose_rpath ((const char *) (l->l_addr
- + l->l_info[DT_STRTAB]->d_un.d_ptr
- + l->l_info[DT_RPATH]->d_un.d_val),
- nllp);
+ if (l->l_type != lt_loaded && l->l_info[DT_RPATH])
+ {
+ /* Allocate room for the search path and fill in information
+ from RPATH. */
+ l->l_rpath_dirs =
+ decompose_rpath ((const char *)
+ (l->l_addr + l->l_info[DT_STRTAB]->d_un.d_ptr
+ + l->l_info[DT_RPATH]->d_un.d_val),
+ nllp);
+ }
+ else
+ {
+ /* If we have no LD_LIBRARY_PATH and no RPATH we must tell
+ this somehow to prevent we look this up again and again. */
+ if (nllp == 0)
+ l->l_rpath_dirs = (struct r_search_path_elem **) -1l;
+ else
+ {
+ l->l_rpath_dirs = (struct r_search_path_elem **)
+ malloc ((nllp + 1) * sizeof (*l->l_rpath_dirs));
+ if (l->l_rpath_dirs == NULL)
+ _dl_signal_error (ENOMEM, NULL,
+ "cannot create cache for search path");
+ l->l_rpath_dirs[0] = NULL;
+ }
+ }
+
+ /* We don't need to search the list of fake entries which is searched
+ when no dynamic objects were loaded at this time. */
+ fake_path_list = NULL;
+
+ if (nllp > 0)
+ {
+ char *copy = strdupa (llp);
+
+ /* Decompose the LD_LIBRARY_PATH and fill in the result.
+ First search for the next place to enter elements. */
+ struct r_search_path_elem **result = l->l_rpath_dirs;
+ while (*result != NULL)
+ ++result;
+
+ /* We need to take care that the LD_LIBRARY_PATH environment
+ variable can contain a semicolon. */
+ (void) fillin_rpath (copy, result, ":;",
+ __libc_enable_secure ? trusted_dirs : NULL);
+ }
}
else
{
- /* If we have no LD_LIBRARY_PATH and no RPATH we must tell this
- somehow to prevent we look this up again and again. */
+ /* This is a statically linked program but we still have to
+ take care for the LD_LIBRARY_PATH environment variable. We
+ use a fake link_map entry. This will only contain the
+ l_rpath_dirs information. */
+
if (nllp == 0)
- l->l_rpath_dirs = (struct r_search_path_elem **) -1l;
+ fake_path_list = NULL;
else
{
- l->l_rpath_dirs =
- (struct r_search_path_elem **) malloc ((nllp + 1)
- * sizeof (*l->l_rpath_dirs));
- if (l->l_rpath_dirs == NULL)
- _dl_signal_error (ENOMEM, NULL,
- "cannot create cache for search path");
- l->l_rpath_dirs[0] = NULL;
- }
- }
+ fake_path_list = (struct r_search_path_elem **)
+ malloc ((nllp + 1) * sizeof (struct r_search_path_elem *));
- if (nllp > 0)
- {
- static const char *trusted_dirs[] =
- {
-#include "trusted-dirs.h"
- NULL
- };
- char *copy = strdupa (llp);
-
- /* Decompose the LD_LIBRARY_PATH and fill in the result.
- First search for the next place to enter elements. */
- struct r_search_path_elem **result = l->l_rpath_dirs;
- while (*result != NULL)
- ++result;
-
- /* We need to take care that the LD_LIBRARY_PATH environement
- variable can contain a semicolon. */
- (void) fillin_rpath (copy, result, ":;",
- __libc_enable_secure ? trusted_dirs : NULL);
+ (void) fillin_rpath (local_strdup (llp), fake_path_list, ":;",
+ __libc_enable_secure ? trusted_dirs : NULL);
+ }
}
/* Now set up the rest of the rtld_search_dirs. */
@@ -871,7 +901,7 @@ _dl_map_object (struct link_map *loader, const char *name, int type,
/* Look for this name among those already loaded. */
for (l = _dl_loaded; l; l = l->l_next)
- if (_dl_name_match_p (name, l) ||
+ if (l->l_opencount > 0 && _dl_name_match_p (name, l) ||
/* If the requested name matches the soname of a loaded object,
use that object. */
(l->l_info[DT_SONAME] &&
@@ -923,6 +953,11 @@ _dl_map_object (struct link_map *loader, const char *name, int type,
&& l->l_rpath_dirs != (struct r_search_path_elem **) -1l)
fd = open_path (name, namelen, l->l_rpath_dirs, &realname);
+ /* This is used if a static binary uses dynamic loading and there
+ is a LD_LIBRARY_PATH given. */
+ if (fd == -1 && fake_path_list != NULL)
+ fd = open_path (name, namelen, fake_path_list, &realname);
+
if (fd == -1)
{
/* Check the list of libraries in the file /etc/ld.so.cache,