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Diffstat (limited to 'elf/rtld.c')
-rw-r--r--elf/rtld.c139
1 files changed, 78 insertions, 61 deletions
diff --git a/elf/rtld.c b/elf/rtld.c
index c3d81e198f..60a102a85c 100644
--- a/elf/rtld.c
+++ b/elf/rtld.c
@@ -53,13 +53,13 @@ static void print_unresolved (int errcode, const char *objname,
static void print_missing_version (int errcode, const char *objname,
const char *errsting);
-
int _dl_argc;
char **_dl_argv;
const char *_dl_rpath;
int _dl_verbose;
const char *_dl_platform;
size_t _dl_platformlen;
+unsigned long _dl_hwcap;
struct r_search_path *_dl_search_paths;
const char *_dl_profile;
const char *_dl_profile_output;
@@ -80,6 +80,7 @@ static void dl_main (const ElfW(Phdr) *phdr,
struct link_map _dl_rtld_map;
struct libname_list _dl_rtld_libname;
+struct libname_list _dl_rtld_libname2;
#ifdef RTLD_START
RTLD_START
@@ -119,19 +120,22 @@ _dl_start (void *arg)
the operating system's program loader where to find the program
header table in core. */
-
/* Transfer data about ourselves to the permanent link_map structure. */
_dl_rtld_map.l_addr = bootstrap_map.l_addr;
_dl_rtld_map.l_ld = bootstrap_map.l_ld;
+ _dl_rtld_map.l_opencount = 1;
memcpy (_dl_rtld_map.l_info, bootstrap_map.l_info,
sizeof _dl_rtld_map.l_info);
_dl_setup_hash (&_dl_rtld_map);
/* Cache the DT_RPATH stored in ld.so itself; this will be
the default search path. */
- _dl_rpath = (void *) (_dl_rtld_map.l_addr +
- _dl_rtld_map.l_info[DT_STRTAB]->d_un.d_ptr +
- _dl_rtld_map.l_info[DT_RPATH]->d_un.d_val);
+ if (_dl_rtld_map.l_info[DT_STRTAB] && _dl_rtld_map.l_info[DT_RPATH])
+ {
+ _dl_rpath = (void *) (_dl_rtld_map.l_addr +
+ _dl_rtld_map.l_info[DT_STRTAB]->d_un.d_ptr +
+ _dl_rtld_map.l_info[DT_RPATH]->d_un.d_val);
+ }
/* Call the OS-dependent function to set up life so we can do things like
file access. It will call `dl_main' (below) to do all the real work
@@ -416,6 +420,23 @@ of this helper program; chances are you did not intend to run this program.\n",
_dl_rtld_libname.name = (const char *) main_map->l_addr + ph->p_vaddr;
_dl_rtld_libname.next = NULL;
_dl_rtld_map.l_libname = &_dl_rtld_libname;
+
+ /* Ordinarilly, we would get additional names for the loader from
+ our DT_SONAME. This can't happen if we were actually linked as
+ a static executable (detect this case when we have no DYNAMIC).
+ If so, assume the filename component of the interpreter path to
+ be our SONAME, and add it to our name list. */
+ if (_dl_rtld_map.l_ld == NULL)
+ {
+ char *p = strrchr (_dl_rtld_libname.name, '/');
+ if (p)
+ {
+ _dl_rtld_libname2.name = p+1;
+ _dl_rtld_libname2.next = NULL;
+ _dl_rtld_libname.next = &_dl_rtld_libname2;
+ }
+ }
+
has_interp = 1;
break;
}
@@ -696,74 +717,70 @@ of this helper program; chances are you did not intend to run this program.\n",
for (map = _dl_loaded; map != NULL; map = map->l_next)
{
- const char *strtab =
- (const char *) (map->l_addr
- + map->l_info[DT_STRTAB]->d_un.d_ptr);
+ const char *strtab;
ElfW(Dyn) *dyn = map->l_info[VERNEEDTAG];
+ ElfW(Verneed) *ent;
+
+ if (dyn == NULL)
+ continue;
+
+ strtab = (const char *)
+ (map->l_addr + map->l_info[DT_STRTAB]->d_un.d_ptr);
+ ent = (ElfW(Verneed) *) (map->l_addr + dyn->d_un.d_ptr);
- if (dyn != NULL)
+ if (first)
{
- ElfW(Verneed) *ent =
- (ElfW(Verneed) *) (map->l_addr + dyn->d_un.d_ptr);
+ _dl_sysdep_message ("\n\tVersion information:\n", NULL);
+ first = 0;
+ }
- if (first)
- {
- _dl_sysdep_message ("\n\tVersion information:\n",
- NULL);
- first = 0;
- }
+ _dl_sysdep_message ("\t", (map->l_name[0]
+ ? map->l_name : _dl_argv[0]),
+ ":\n", NULL);
+
+ while (1)
+ {
+ ElfW(Vernaux) *aux;
+ struct link_map *needed;
- _dl_sysdep_message ("\t", (map->l_name[0]
- ? map->l_name
- : _dl_argv[0]), ":\n",
- NULL);
+ needed = find_needed (strtab + ent->vn_file);
+ aux = (ElfW(Vernaux) *) ((char *) ent + ent->vn_aux);
while (1)
{
- ElfW(Vernaux) *aux;
- struct link_map *needed;
-
- needed = find_needed (strtab + ent->vn_file);
- aux = (ElfW(Vernaux) *) ((char *) ent + ent->vn_aux);
-
- while (1)
- {
- const char *fname = NULL;
-
- _dl_sysdep_message ("\t\t",
- strtab + ent->vn_file,
- " (", strtab + aux->vna_name,
- ") ",
- (aux->vna_flags
- & VER_FLG_WEAK
- ? "[WEAK] " : ""),
- "=> ", NULL);
-
- if (needed != NULL
- && match_version (strtab + aux->vna_name,
- needed))
- fname = needed->l_name;
-
- _dl_sysdep_message (fname ?: "not found", "\n",
- NULL);
-
- if (aux->vna_next == 0)
- /* No more symbols. */
- break;
-
- /* Next symbol. */
- aux = (ElfW(Vernaux) *) ((char *) aux
- + aux->vna_next);
- }
+ const char *fname = NULL;
+
+ _dl_sysdep_message ("\t\t",
+ strtab + ent->vn_file,
+ " (", strtab + aux->vna_name,
+ ") ",
+ (aux->vna_flags
+ & VER_FLG_WEAK
+ ? "[WEAK] " : ""),
+ "=> ", NULL);
+
+ if (needed != NULL
+ && match_version (strtab+aux->vna_name, needed))
+ fname = needed->l_name;
+
+ _dl_sysdep_message (fname ?: "not found", "\n",
+ NULL);
- if (ent->vn_next == 0)
- /* No more dependencies. */
+ if (aux->vna_next == 0)
+ /* No more symbols. */
break;
- /* Next dependency. */
- ent = (ElfW(Verneed) *) ((char *) ent
- + ent->vn_next);
+ /* Next symbol. */
+ aux = (ElfW(Vernaux) *) ((char *) aux
+ + aux->vna_next);
}
+
+ if (ent->vn_next == 0)
+ /* No more dependencies. */
+ break;
+
+ /* Next dependency. */
+ ent = (ElfW(Verneed) *) ((char *) ent + ent->vn_next);
}
}
}