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Diffstat (limited to 'src/ldso')
-rw-r--r--src/ldso/dynlink.c18
1 files changed, 9 insertions, 9 deletions
diff --git a/src/ldso/dynlink.c b/src/ldso/dynlink.c
index 820e8a36..49ea5e9c 100644
--- a/src/ldso/dynlink.c
+++ b/src/ldso/dynlink.c
@@ -268,23 +268,20 @@ static void *map_library(int fd, size_t *lenp, unsigned char **basep, size_t *dy
prot = (((ph->p_flags&PF_R) ? PROT_READ : 0) |
((ph->p_flags&PF_W) ? PROT_WRITE: 0) |
((ph->p_flags&PF_X) ? PROT_EXEC : 0));
- if (mmap(base+this_min, this_max-this_min, prot, MAP_PRIVATE|MAP_FIXED, fd, off_start) == MAP_FAILED) {
- munmap(map, map_len);
- return 0;
- }
+ if (mmap(base+this_min, this_max-this_min, prot, MAP_PRIVATE|MAP_FIXED, fd, off_start) == MAP_FAILED)
+ goto error;
if (ph->p_memsz > ph->p_filesz) {
size_t brk = (size_t)base+ph->p_vaddr+ph->p_filesz;
size_t pgbrk = brk+PAGE_SIZE-1 & -PAGE_SIZE;
memset((void *)brk, 0, pgbrk-brk & PAGE_SIZE-1);
- if (pgbrk-(size_t)base < this_max && mmap((void *)pgbrk, (size_t)base+this_max-pgbrk, prot, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) == MAP_FAILED) {
- munmap(map, map_len);
- return 0;
- }
+ if (pgbrk-(size_t)base < this_max && mmap((void *)pgbrk, (size_t)base+this_max-pgbrk, prot, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) == MAP_FAILED)
+ goto error;
}
}
for (i=0; ((size_t *)(base+dyn))[i]; i+=2)
if (((size_t *)(base+dyn))[i]==DT_TEXTREL) {
- mprotect(map, map_len, PROT_READ|PROT_WRITE|PROT_EXEC);
+ if (mprotect(map, map_len, PROT_READ|PROT_WRITE|PROT_EXEC) < 0)
+ goto error;
break;
}
if (!runtime) reclaim_gaps(base, (void *)((char *)buf + eh->e_phoff),
@@ -293,6 +290,9 @@ static void *map_library(int fd, size_t *lenp, unsigned char **basep, size_t *dy
*basep = base;
*dynp = dyn;
return map;
+error:
+ munmap(map, map_len);
+ return 0;
}
static int path_open(const char *name, const char *search, char *buf, size_t buf_size)