svn commit: r332437 - head/usr.bin/etdump

[Benno Rice]

Author: benno
Date: Thu Apr 12 15:50:19 2018
New Revision: 332437
URL: https://svnweb.freebsd.org/changeset/base/332437

Log:
  Check the return value of fseek.
  
  Reported by:	Coverity
  CID:		1388267
  Sponsored by:	iXsystems, Inc.

Modified:
  head/usr.bin/etdump/etdump.c

Modified: head/usr.bin/etdump/etdump.c
==============================================================================
--- head/usr.bin/etdump/etdump.c	Thu Apr 12 15:47:47 2018	(r332436)
+++ head/usr.bin/etdump/etdump.c	Thu Apr 12 15:50:19 2018	(r332437)
@@ -80,7 +80,9 @@ static int
 read_sector(FILE *iso, daddr_t sector, char *buffer)
 {
 
-	fseek(iso, sector * ISO_DEFAULT_BLOCK_SIZE, SEEK_SET);
+	if (fseek(iso, sector * ISO_DEFAULT_BLOCK_SIZE, SEEK_SET) != 0) {
+		return (errno);
+	}
 	if (fread(buffer, ISO_DEFAULT_BLOCK_SIZE, 1, iso) != 1) {
 		return (errno);
 	}