From 1f7ea87871d9bd743d31618f96e1a3f2dd5bde91 Mon Sep 17 00:00:00 2001 From: David Sterba Date: Tue, 6 Jan 2015 18:54:48 +0100 Subject: [PATCH] btrfs-progs: convert, handle pwrite error in do_rollback Resolves-coverity-id: 1242984 Signed-off-by: David Sterba --- btrfs-convert.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/btrfs-convert.c b/btrfs-convert.c index c503bf6..bbd19bb 100644 --- a/btrfs-convert.c +++ b/btrfs-convert.c @@ -2675,6 +2675,12 @@ next_extent: if (bytenr >= total_bytes) break; ret = pwrite(fd, buf, sectorsize, bytenr); + if (ret != sectorsize) { + fprintf(stderr, + "error during zeroing supreblock %d: %d\n", + i, ret); + goto fail; + } } sb_bytenr = (u64)-1; -- 2.7.4