diff options
Diffstat (limited to 'elf')
| -rw-r--r-- | elf/dl-map-segments.h | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/elf/dl-map-segments.h b/elf/dl-map-segments.h index 31d6861..d36f9bd 100644 --- a/elf/dl-map-segments.h +++ b/elf/dl-map-segments.h @@ -64,14 +64,18 @@ _dl_map_segments (struct link_map *l, int fd, l->l_addr = l->l_map_start - c->mapstart; if (has_holes) - /* Change protection on the excess portion to disallow all access; - the portions we do not remap later will be inaccessible as if - unallocated. Then jump into the normal segment-mapping loop to - handle the portion of the segment past the end of the file - mapping. */ - __mprotect ((caddr_t) (l->l_addr + c->mapend), - loadcmds[nloadcmds - 1].mapstart - c->mapend, - PROT_NONE); + { + /* Change protection on the excess portion to disallow all access; + the portions we do not remap later will be inaccessible as if + unallocated. Then jump into the normal segment-mapping loop to + handle the portion of the segment past the end of the file + mapping. */ + if (__glibc_unlikely + (__mprotect ((caddr_t) (l->l_addr + c->mapend), + loadcmds[nloadcmds - 1].mapstart - c->mapend, + PROT_NONE) < 0)) + return DL_MAP_SEGMENTS_ERROR_MPROTECT; + } l->l_contiguous = 1; |