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-rw-r--r--elf/dl-deps.c5
-rw-r--r--elf/dl-load.c24
-rw-r--r--elf/dl-open.c4
-rw-r--r--elf/dl-runtime.c2
-rw-r--r--elf/link.h5
-rw-r--r--elf/rtld.c41
6 files changed, 54 insertions, 27 deletions
diff --git a/elf/dl-deps.c b/elf/dl-deps.c
index 8521c50d25..c310a5b82d 100644
--- a/elf/dl-deps.c
+++ b/elf/dl-deps.c
@@ -24,7 +24,8 @@ Cambridge, MA 02139, USA. */
void
_dl_map_object_deps (struct link_map *map,
- struct link_map **preloads, unsigned int npreloads)
+ struct link_map **preloads, unsigned int npreloads,
+ int trace_mode)
{
struct list
{
@@ -75,7 +76,7 @@ _dl_map_object_deps (struct link_map *map,
struct link_map *dep
= _dl_map_object (l, strtab + d->d_un.d_val,
l->l_type == lt_executable ? lt_library :
- l->l_type);
+ l->l_type, trace_mode);
if (dep->l_reserved)
/* This object is already in the search list we are
diff --git a/elf/dl-load.c b/elf/dl-load.c
index 9dfc961a2f..1a86cccb89 100644
--- a/elf/dl-load.c
+++ b/elf/dl-load.c
@@ -477,7 +477,8 @@ open_path (const char *name, size_t namelen,
/* Map in the shared object file NAME. */
struct link_map *
-_dl_map_object (struct link_map *loader, const char *name, int type)
+_dl_map_object (struct link_map *loader, const char *name, int type,
+ int trace_mode)
{
int fd;
char *realname;
@@ -582,7 +583,26 @@ _dl_map_object (struct link_map *loader, const char *name, int type)
}
if (fd == -1)
- _dl_signal_error (errno, name, "cannot open shared object file");
+ {
+ if (trace_mode)
+ {
+ /* We haven't found an appropriate library. But since we
+ are only interested in the list of libraries this isn't
+ so severe. Fake an entry with all the information we
+ have (in fact only the name). */
+
+ /* Enter the new object in the list of loaded objects. */
+ if ((name_copy = local_strdup (name)) == NULL
+ || (l = _dl_new_object (name_copy, name, type)) == NULL)
+ _dl_signal_error (ENOMEM, name,
+ "cannot create shared object descriptor");
+ /* We use an opencount of 0 as a sign for the faked entry. */
+ l->l_opencount = 0;
+ l->l_reserved = 0;
+ }
+ else
+ _dl_signal_error (errno, name, "cannot open shared object file");
+ }
return _dl_map_object_from_fd (name_copy, fd, realname, loader, type);
}
diff --git a/elf/dl-open.c b/elf/dl-open.c
index 25f2ba6fab..8f4f9f5015 100644
--- a/elf/dl-open.c
+++ b/elf/dl-open.c
@@ -46,13 +46,13 @@ _dl_open (const char *file, int mode)
struct r_debug *r;
/* Load the named object. */
- new = _dl_map_object (NULL, file, lt_loaded);
+ new = _dl_map_object (NULL, file, lt_loaded, 0);
if (new->l_searchlist)
/* It was already open. */
return new;
/* Load that object's dependencies. */
- _dl_map_object_deps (new, NULL, 0);
+ _dl_map_object_deps (new, NULL, 0, 0);
/* Relocate the objects loaded. We do this in reverse order so that copy
diff --git a/elf/dl-runtime.c b/elf/dl-runtime.c
index 4e7b5296d4..2a186f2d0b 100644
--- a/elf/dl-runtime.c
+++ b/elf/dl-runtime.c
@@ -41,7 +41,7 @@ _dl_object_relocation_scope (struct link_map *l)
if (! l->l_searchlist)
/* We must construct the searchlist for this object. */
- _dl_map_object_deps (l, NULL, 0);
+ _dl_map_object_deps (l, NULL, 0, 0);
/* The primary scope is this object itself and its
dependencies. */
diff --git a/elf/link.h b/elf/link.h
index a6281726c3..1e3828afbb 100644
--- a/elf/link.h
+++ b/elf/link.h
@@ -195,7 +195,8 @@ extern int _dlerror_run (void (*operate) (void));
LOADER's DT_RPATH is used in searching for NAME.
If the object is already opened, returns its existing map. */
extern struct link_map *_dl_map_object (struct link_map *loader,
- const char *name, int type);
+ const char *name, int type,
+ int trace_mode);
/* Call _dl_map_object on the dependencies of MAP, and set up
MAP->l_searchlist. PRELOADS points to a vector of NPRELOADS previously
@@ -203,7 +204,7 @@ extern struct link_map *_dl_map_object (struct link_map *loader,
but before its dependencies. */
extern void _dl_map_object_deps (struct link_map *map,
struct link_map **preloads,
- unsigned int npreloads);
+ unsigned int npreloads, int trace_mode);
/* Cache the locations of MAP's hash table. */
extern void _dl_setup_hash (struct link_map *map);
diff --git a/elf/rtld.c b/elf/rtld.c
index 58676924e5..1fae3488d9 100644
--- a/elf/rtld.c
+++ b/elf/rtld.c
@@ -149,6 +149,9 @@ dl_main (const ElfW(Phdr) *phdr,
mode = getenv ("LD_TRACE_LOADED_OBJECTS") != NULL ? trace : normal;
+ /* Set up a flag which tells we are just starting. */
+ _dl_starting_up = 1;
+
if (*user_entry == (ElfW(Addr)) &_start)
{
/* Ho ho. We are not the program interpreter! We are the program
@@ -210,7 +213,7 @@ of this helper program; chances are you did not intend to run this program.\n",
{
void doit (void)
{
- l = _dl_map_object (NULL, _dl_argv[0], lt_library);
+ l = _dl_map_object (NULL, _dl_argv[0], lt_library, 0);
}
char *err_str = NULL;
const char *obj_name __attribute__ ((unused));
@@ -223,7 +226,7 @@ of this helper program; chances are you did not intend to run this program.\n",
}
}
else
- l = _dl_map_object (NULL, _dl_argv[0], lt_library);
+ l = _dl_map_object (NULL, _dl_argv[0], lt_library, 0);
phdr = l->l_phdr;
phent = l->l_phnum;
@@ -322,7 +325,7 @@ of this helper program; chances are you did not intend to run this program.\n",
char *p;
while ((p = strsep (&list, ":")) != NULL)
{
- (void) _dl_map_object (NULL, p, lt_library);
+ (void) _dl_map_object (NULL, p, lt_library, 0);
++npreloads;
}
}
@@ -378,7 +381,7 @@ of this helper program; chances are you did not intend to run this program.\n",
runp = file;
while ((p = strsep (&runp, ": \t\n")) != NULL)
{
- (void) _dl_map_object (NULL, p, lt_library);
+ (void) _dl_map_object (NULL, p, lt_library, 0);
++npreloads;
}
}
@@ -386,7 +389,7 @@ of this helper program; chances are you did not intend to run this program.\n",
if (problem != NULL)
{
char *p = strndupa (problem, file_size - (problem - file));
- (void) _dl_map_object (NULL, p, lt_library);
+ (void) _dl_map_object (NULL, p, lt_library, 0);
}
/* We don't need the file anymore. */
@@ -412,7 +415,7 @@ of this helper program; chances are you did not intend to run this program.\n",
/* Load all the libraries specified by DT_NEEDED entries. If LD_PRELOAD
specified some libraries to load, these are inserted before the actual
dependencies in the executable's searchlist for symbol resolution. */
- _dl_map_object_deps (l, preloads, npreloads);
+ _dl_map_object_deps (l, preloads, npreloads, mode == trace);
#ifndef MAP_ANON
/* We are done mapping things, so close the zero-fill descriptor. */
@@ -459,15 +462,20 @@ of this helper program; chances are you did not intend to run this program.\n",
_dl_sysdep_message ("\t", "statically linked\n", NULL);
else
for (l = _dl_loaded->l_next; l; l = l->l_next)
- {
- char buf[20], *bp;
- buf[sizeof buf - 1] = '\0';
- bp = _itoa (l->l_addr, &buf[sizeof buf - 1], 16, 0);
- while ((size_t) (&buf[sizeof buf - 1] - bp) < sizeof l->l_addr * 2)
- *--bp = '0';
- _dl_sysdep_message ("\t", l->l_libname, " => ", l->l_name,
- " (0x", bp, ")\n", NULL);
- }
+ if (l->l_opencount == 0)
+ /* The library was not found. */
+ _dl_sysdep_message ("\t", l->l_libname, " => not found\n", NULL);
+ else
+ {
+ char buf[20], *bp;
+ buf[sizeof buf - 1] = '\0';
+ bp = _itoa (l->l_addr, &buf[sizeof buf - 1], 16, 0);
+ while ((size_t) (&buf[sizeof buf - 1] - bp)
+ < sizeof l->l_addr * 2)
+ *--bp = '0';
+ _dl_sysdep_message ("\t", l->l_libname, " => ", l->l_name,
+ " (0x", bp, ")\n", NULL);
+ }
if (mode != trace)
for (i = 1; i < _dl_argc; ++i)
@@ -563,9 +571,6 @@ of this helper program; chances are you did not intend to run this program.\n",
_dl_debug_state ();
}
- /* We finished the intialization and will start up. */
- _dl_starting_up = 1;
-
/* Once we return, _dl_sysdep_start will invoke
the DT_INIT functions and then *USER_ENTRY. */
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-17 04:05:56 +0000