btrfs-progs: check for negative return value from ioctl

Handle only negative values returned by ioctl syscalls, with exception
of the device remove. It returns positive values that are handled later.

Signed-off-by: David Sterba <dsterba@suse.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/cmds-receive.c b/cmds-receive.c
index 6d50cd31..094a6073 100644
--- a/cmds-receive.c
+++ b/cmds-receive.c
@@ -771,7 +771,7 @@ static int process_clone(const char *path, u64 offset, u64 len,
 	clone_args.src_length = len;
 	clone_args.dest_offset = offset;
 	ret = ioctl(r->write_fd, BTRFS_IOC_CLONE_RANGE, &clone_args);
-	if (ret) {
+	if (ret < 0) {
 		ret = -errno;
 		error("failed to clone extents to %s\n%s\n",
 				path, strerror(-ret));