diff options
Diffstat (limited to 'elf/dl-load.c')
| -rw-r--r-- | elf/dl-load.c | 42 |
1 files changed, 31 insertions, 11 deletions
diff --git a/elf/dl-load.c b/elf/dl-load.c index 8ccc838..6fd6a6c 100644 --- a/elf/dl-load.c +++ b/elf/dl-load.c @@ -70,11 +70,25 @@ int _dl_zerofd = -1; size_t _dl_pagesize; +/* Local version of `strdup' function. */ +static inline char * +local_strdup (const char *s) +{ + size_t len = strlen (s) + 1; + void *new = malloc (len); + + if (new == NULL) + return NULL; + + return (char *) memcpy (new, s, len); +} + + /* Map in the shared object NAME, actually located in REALNAME, and already opened on FD. */ struct link_map * -_dl_map_object_from_fd (const char *name, int fd, char *realname, +_dl_map_object_from_fd (char *name, int fd, char *realname, struct link_map *loader, int l_type) { struct link_map *l = NULL; @@ -96,6 +110,7 @@ _dl_map_object_from_fd (const char *name, int fd, char *realname, l->l_next->l_prev = l->l_prev; free (l); } + free (name); free (realname); _dl_signal_error (code, name, msg); } @@ -142,6 +157,7 @@ _dl_map_object_from_fd (const char *name, int fd, char *realname, /* The object is already loaded. Just bump its reference count and return it. */ __close (fd); + free (name); free (realname); ++l->l_opencount; return l; @@ -524,11 +540,8 @@ _dl_map_object (struct link_map *loader, const char *name, int type) fd = __open (cached, O_RDONLY); if (fd != -1) { - size_t cl = strlen (cached) + 1; - realname = malloc (cl); - if (realname) - memcpy (realname, cached, cl); - else + realname = local_strdup (cached); + if (realname == NULL) { __close (fd); fd = -1; @@ -548,11 +561,8 @@ _dl_map_object (struct link_map *loader, const char *name, int type) fd = __open (name, O_RDONLY); if (fd != -1) { - size_t len = strlen (name) + 1; - realname = malloc (len); - if (realname) - memcpy (realname, name, len); - else + realname = local_strdup (name); + if (realname == NULL) { __close (fd); fd = -1; @@ -560,6 +570,16 @@ _dl_map_object (struct link_map *loader, const char *name, int type) } } + if (fd != -1) + { + name = local_strdup (name); + if (name == NULL) + { + __close (fd); + fd = -1; + } + } + if (fd == -1) _dl_signal_error (errno, name, "cannot open shared object file"); |