diff options
Diffstat (limited to 'src/blind-rewrite-head.c')
| -rw-r--r-- | src/blind-rewrite-head.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/src/blind-rewrite-head.c b/src/blind-rewrite-head.c index 0de1716..1de8a29 100644 --- a/src/blind-rewrite-head.c +++ b/src/blind-rewrite-head.c @@ -42,22 +42,22 @@ rewrite(struct stream *stream, int frames_auto) stream->frames, stream->width, stream->height, stream->pixfmt, 0, &headlen); length = stream->frames * frame_size; - if (length > (size_t)SSIZE_MAX || headlen > (size_t)SSIZE_MAX - length) + if (length > (size_t)SSIZE_MAX || (size_t)headlen > (size_t)SSIZE_MAX - length) eprintf("%s: video is too long\n", stream->file); - if (headlen > stream->headlen) + if ((size_t)headlen > stream->headlen) if (ftruncate(stream->fd, length + headlen)) eprintf("ftruncate %s:", stream->file); - data = mmap(0, length + (size_t)headlen, PROT_READ | PROT_WRITE, MAP_PRIVATE, stream->fd, 0); + data = mmap(0, length + (size_t)headlen, PROT_READ | PROT_WRITE, MAP_SHARED, stream->fd, 0); if (data == MAP_FAILED) eprintf("mmap %s:", stream->file); - if (headlen != stream->headlen) + if ((size_t)headlen != stream->headlen) memmove(data + headlen, data + stream->headlen, length); memcpy(data, head, (size_t)headlen); munmap(data, length + (size_t)headlen); - if (headlen < stream->headlen) + if ((size_t)headlen < stream->headlen) if (ftruncate(stream->fd, length + headlen)) eprintf("ftruncate %s:", stream->file); } @@ -80,7 +80,7 @@ main(int argc, char *argv[]) if (headless) { if (argc != 5) eprintf("all positional arguments are mandatory unless -h is used\n"); - } else if (argc != 1 || argc != 2 || argc != 4 || argc != 5) { + } else if (argc != 1 && argc != 2 && argc != 4 && argc != 5) { usage(); } |