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[28/39] kpartx: Handle errors from lseek()

Message ID 1466070465-1021-29-git-send-email-hare@suse.de (mailing list archive)
State Not Applicable, archived
Delegated to: christophe varoqui
Headers show

Commit Message

Hannes Reinecke June 16, 2016, 9:47 a.m. UTC 
Found by coverity.

Signed-off-by: Hannes Reinecke <hare@suse.com>
---
 kpartx/gpt.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
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Patch

diff --git a/kpartx/gpt.c b/kpartx/gpt.c
index 5a54970..3dac605 100644
--- a/kpartx/gpt.c
+++ b/kpartx/gpt.c
@@ -206,9 +206,10 @@  read_lba(int fd, uint64_t lba, void *buffer, size_t bytes)
 	int sector_size = get_sector_size(fd);
 	off_t offset = lba * sector_size;
 	uint64_t lastlba;
-        ssize_t bytesread;
+	ssize_t bytesread;
 
-	lseek(fd, offset, SEEK_SET);
+	if (lseek(fd, offset, SEEK_SET) < 0)
+		return 0;
 	bytesread = read(fd, buffer, bytes);
 
 	lastlba = last_lba(fd);