mdadm/super1: fix coverity issue CHECKED_RETURN

It needs to check return value when functions return value.

Signed-off-by: Xiao Ni <xni@redhat.com>
Signed-off-by: Mariusz Tkaczyk <mariusz.tkaczyk@linux.intel.com>

1 files changed, 16 insertions, 4 deletions

diff --git a/super1.c b/super1.c
index 81d29a65..4e4c7bfd 100644
--- a/super1.c
+++ b/super1.c
@@ -260,7 +260,10 @@ static int aread(struct align_fd *afd, void *buf, int len)
 	n = read(afd->fd, b, iosize);
 	if (n <= 0)
 		return n;
-	lseek(afd->fd, len - n, 1);
+	if (lseek(afd->fd, len - n, 1) < 0) {
+		pr_err("lseek fails\n");
+		return -1;
+	}
 	if (n > len)
 		n = len;
 	memcpy(buf, b, n);
@@ -294,14 +297,20 @@ static int awrite(struct align_fd *afd, void *buf, int len)
 		n = read(afd->fd, b, iosize);
 		if (n <= 0)
 			return n;
-		lseek(afd->fd, -n, 1);
+		if (lseek(afd->fd, -n, 1) < 0) {
+			pr_err("lseek fails\n");
+			return -1;
+		}
 	}
 
 	memcpy(b, buf, len);
 	n = write(afd->fd, b, iosize);
 	if (n <= 0)
 		return n;
-	lseek(afd->fd, len - n, 1);
+	if (lseek(afd->fd, len - n, 1) < 0) {
+		pr_err("lseek fails\n");
+		return -1;
+	}
 	return len;
 }
 
@@ -2667,7 +2676,10 @@ static int locate_bitmap1(struct supertype *st, int fd, int node_num)
 	}
 	if (mustfree)
 		free(sb);
-	lseek64(fd, offset<<9, 0);
+	if (lseek64(fd, offset<<9, 0) < 0) {
+		pr_err("lseek fails\n");
+		ret = -1;
+	}
 	return ret;
 }