diff options
| -rw-r--r-- | compat/mmap.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/compat/mmap.c b/compat/mmap.c index 55cb120764..a4d2e507f7 100644 --- a/compat/mmap.c +++ b/compat/mmap.c @@ -7,6 +7,7 @@ void *gitfakemmap(void *start, size_t length, int prot , int flags, int fd, off_t offset) { int n = 0; + off_t current_offset = lseek(fd, 0, SEEK_CUR); if (start != NULL || !(flags & MAP_PRIVATE)) die("Invalid usage of gitfakemmap."); @@ -39,6 +40,11 @@ void *gitfakemmap(void *start, size_t length, int prot , int flags, int fd, off_ n += count; } + if (current_offset != lseek(fd, current_offset, SEEK_SET)) { + errno = EINVAL; + return MAP_FAILED; + } + return start; } |