From 3cdcc7ef32e90c411d7f4e14a896f9bf7afa4f29 Mon Sep 17 00:00:00 2001
From: Peter Jones <pjones@redhat.com>
Date: Wed, 10 Sep 2014 16:56:49 -0400
Subject: [PATCH 17/18] Check lseek() for errors.

Covscan.

Signed-off-by: Peter Jones <pjones@redhat.com>
---
 src/lib/gpt.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/lib/gpt.c b/src/lib/gpt.c
index 67a8c41..fc2acf3 100644
--- a/src/lib/gpt.c
+++ b/src/lib/gpt.c
@@ -221,6 +221,7 @@ read_lba(int fd, uint64_t lba, void *buffer, size_t bytes)
         void *iobuf;
         size_t iobuf_size;
         int rc;
+	off_t new_offset;
 
         iobuf_size = lcm(bytes, sector_size);
         rc = posix_memalign(&iobuf, sector_size, iobuf_size);
@@ -228,8 +229,11 @@ read_lba(int fd, uint64_t lba, void *buffer, size_t bytes)
                 return rc;
         memset(iobuf, 0, bytes);
 
-
-        lseek(fd, offset, SEEK_SET);
+        new_offset = lseek(fd, offset, SEEK_SET);
+	if (new_offset == (off_t)-1) {
+		free(iobuf);
+		return 0;
+	}
         bytesread = read(fd, iobuf, iobuf_size);
         memcpy(buffer, iobuf, bytes);
         free(iobuf);
-- 
1.9.3