diff --git a/index-pack.c b/index-pack.c index 530d820370..c45ae20e8f 100644 --- a/index-pack.c +++ b/index-pack.c @@ -365,8 +365,11 @@ static void *get_data_from_pack(struct object_entry *obj) data = src; do { ssize_t n = pread(pack_fd, data + rdy, len - rdy, from + rdy); - if (n <= 0) + if (n < 0) die("cannot pread pack file: %s", strerror(errno)); + if (!n) + die("premature end of pack file, %lu bytes missing", + len - rdy); rdy += n; } while (rdy < len); data = xmalloc(obj->size);