diff options
Diffstat (limited to 'elf')
| -rw-r--r-- | elf/dl-close.c | 60 | ||||
| -rw-r--r-- | elf/testobj1.c | 1 | ||||
| -rw-r--r-- | elf/testobj2.c | 1 | ||||
| -rw-r--r-- | elf/testobj3.c | 1 | ||||
| -rw-r--r-- | elf/testobj4.c | 1 | ||||
| -rw-r--r-- | elf/testobj5.c | 1 |
6 files changed, 46 insertions, 19 deletions
diff --git a/elf/dl-close.c b/elf/dl-close.c index 6a68651d22..8caa2973d9 100644 --- a/elf/dl-close.c +++ b/elf/dl-close.c @@ -106,29 +106,35 @@ _dl_close (struct link_map *map) unsigned int cnt = _dl_main_searchlist->r_nlist; do - --cnt; + if (--cnt < 0) + break; while (_dl_main_searchlist->r_list[cnt] != imap); - while (++cnt < _dl_main_searchlist->r_nlist) - _dl_main_searchlist->r_list[cnt - 1] - = _dl_main_searchlist->r_list[cnt]; + if (cnt >= 0) + { + /* The object was already correctly registered. */ + while (++cnt < _dl_main_searchlist->r_nlist) + _dl_main_searchlist->r_list[cnt - 1] + = _dl_main_searchlist->r_list[cnt]; - --_dl_main_searchlist->r_nlist; - if (_dl_main_searchlist->r_nlist - == _dl_initial_searchlist.r_nlist) + --_dl_main_searchlist->r_nlist; + } + else { - /* All object dynamically loaded by the program are - unloaded. Free the memory allocated for the global - scope variable. */ - struct link_map **old = _dl_main_searchlist->r_list; - - /* Put the old map in. */ - _dl_main_searchlist->r_list = _dl_initial_searchlist.r_list; - /* Signal that the old map is used. */ - _dl_global_scope_alloc = 0; - - /* Now free the old map. */ - free (old); + /* This can happen if loading was interrupted by something + like a missing symbol in the newly loaded objects. In + this case the object is already marked as global but + `r_nlist' does not count it in. The pointer is in the + `r_list' array so we keep searching in the other + direction. */ + cnt = _dl_main_searchlist->r_nlist; + while (_dl_main_searchlist->r_list[cnt] != imap) + { + ++cnt; + /* Note that if _dl_global_scope_alloc is zero we + should never come here in the first place. */ + assert (cnt < _dl_global_scope_alloc); + } } } @@ -186,6 +192,22 @@ _dl_close (struct link_map *map) free (list); + if (_dl_global_scope_alloc != 0 + && _dl_main_searchlist->r_nlist == _dl_initial_searchlist.r_nlist) + { + /* All object dynamically loaded by the program are unloaded. Free + the memory allocated for the global scope variable. */ + struct link_map **old = _dl_main_searchlist->r_list; + + /* Put the old map in. */ + _dl_main_searchlist->r_list = _dl_initial_searchlist.r_list; + /* Signal that the original map is used. */ + _dl_global_scope_alloc = 0; + + /* Now free the old map. */ + free (old); + } + /* Notify the debugger those objects are finalized and gone. */ _r_debug.r_state = RT_CONSISTENT; _dl_debug_state (); diff --git a/elf/testobj1.c b/elf/testobj1.c index b88a8d0ce6..354e1a7c6c 100644 --- a/elf/testobj1.c +++ b/elf/testobj1.c @@ -1,4 +1,5 @@ #include <dlfcn.h> +#include <stdlib.h> int obj1func1 (int a __attribute__ ((unused))) diff --git a/elf/testobj2.c b/elf/testobj2.c index ba91fe873d..dc34ecb323 100644 --- a/elf/testobj2.c +++ b/elf/testobj2.c @@ -1,4 +1,5 @@ #include <dlfcn.h> +#include <stdlib.h> int obj2func1 (int a __attribute__ ((unused))) diff --git a/elf/testobj3.c b/elf/testobj3.c index f89b904cd4..1fb10f9b7f 100644 --- a/elf/testobj3.c +++ b/elf/testobj3.c @@ -1,4 +1,5 @@ #include <dlfcn.h> +#include <stdlib.h> int obj3func1 (int a __attribute__ ((unused))) diff --git a/elf/testobj4.c b/elf/testobj4.c index 38905c824a..d780bef077 100644 --- a/elf/testobj4.c +++ b/elf/testobj4.c @@ -1,4 +1,5 @@ #include <dlfcn.h> +#include <stdlib.h> int obj4func1 (int a __attribute__ ((unused))) diff --git a/elf/testobj5.c b/elf/testobj5.c index 0a2bbe07db..e30ca14cdc 100644 --- a/elf/testobj5.c +++ b/elf/testobj5.c @@ -1,4 +1,5 @@ #include <dlfcn.h> +#include <stdlib.h> int obj5func1 (int a __attribute__ ((unused))) |