From: Abdel Benamrouche <draconux@gmail.com>
Date: Fri, 25 Jul 2008 08:48:26 +0000 (-0700)
Subject: block/ioctl.c and fs/partition/check.c: check value returned by add_partition()
X-Git-Tag: firefly_0821_release~18880
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=04ebd4aee52b06a2c38127d9208546e5b96f3a19;p=firefly-linux-kernel-4.4.55.git

block/ioctl.c and fs/partition/check.c: check value returned by add_partition()

Now that add_partition() has been aught to propagate errors, let's check them.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Abdel Benamrouche <draconux@gmail.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/block/ioctl.c b/block/ioctl.c
index 52d6385216ad..77185e5c026a 100644
--- a/block/ioctl.c
+++ b/block/ioctl.c
@@ -17,6 +17,7 @@ static int blkpg_ioctl(struct block_device *bdev, struct blkpg_ioctl_arg __user
 	long long start, length;
 	int part;
 	int i;
+	int err;
 
 	if (!capable(CAP_SYS_ADMIN))
 		return -EACCES;
@@ -61,9 +62,9 @@ static int blkpg_ioctl(struct block_device *bdev, struct blkpg_ioctl_arg __user
 				}
 			}
 			/* all seems OK */
-			add_partition(disk, part, start, length, ADDPART_FLAG_NONE);
+			err = add_partition(disk, part, start, length, ADDPART_FLAG_NONE);
 			mutex_unlock(&bdev->bd_mutex);
-			return 0;
+			return err;
 		case BLKPG_DEL_PARTITION:
 			if (!disk->part[part-1])
 				return -ENXIO;
diff --git a/fs/partitions/check.c b/fs/partitions/check.c
index 2e6413fbd2d8..7d6b34e201db 100644
--- a/fs/partitions/check.c
+++ b/fs/partitions/check.c
@@ -499,10 +499,16 @@ int rescan_partitions(struct gendisk *disk, struct block_device *bdev)
 		if (!size)
 			continue;
 		if (from + size > get_capacity(disk)) {
-			printk(" %s: p%d exceeds device capacity\n",
+			printk(KERN_ERR " %s: p%d exceeds device capacity\n",
 				disk->disk_name, p);
+			continue;
+		}
+		res = add_partition(disk, p, from, size, state->parts[p].flags);
+		if (res) {
+			printk(KERN_ERR " %s: p%d could not be added: %d\n",
+				disk->disk_name, p, -res);
+			continue;
 		}
-		add_partition(disk, p, from, size, state->parts[p].flags);
 #ifdef CONFIG_BLK_DEV_MD
 		if (state->parts[p].flags & ADDPART_FLAG_RAID)
 			md_autodetect_dev(bdev->bd_dev+p);