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authorLi Lingfeng <lilingfeng3@huawei.com>2023-08-31 10:59:00 +0300
committerJens Axboe <axboe@kernel.dk>2023-08-31 17:00:35 +0300
commit1a721de8489fa559ff4471f73c58bb74ac5580d3 (patch)
treee1300f5ae99942348720ea7d8caff20962f1f8ef /block
parent0d997f1de89970bff4be1b6f0142c0bd036c3ee8 (diff)
downloadlinux-1a721de8489fa559ff4471f73c58bb74ac5580d3.tar.xz
block: don't add or resize partition on the disk with GENHD_FL_NO_PART
Commit a33df75c6328 ("block: use an xarray for disk->part_tbl") remove disk_expand_part_tbl() in add_partition(), which means all kinds of devices will support extended dynamic `dev_t`. However, some devices with GENHD_FL_NO_PART are not expected to add or resize partition. Fix this by adding check of GENHD_FL_NO_PART before add or resize partition. Fixes: a33df75c6328 ("block: use an xarray for disk->part_tbl") Signed-off-by: Li Lingfeng <lilingfeng3@huawei.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20230831075900.1725842-1-lilingfeng@huaweicloud.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block')
-rw-r--r--block/ioctl.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/block/ioctl.c b/block/ioctl.c
index 648670ddb164..d5f5cd61efd7 100644
--- a/block/ioctl.c
+++ b/block/ioctl.c
@@ -20,6 +20,8 @@ static int blkpg_do_ioctl(struct block_device *bdev,
struct blkpg_partition p;
long long start, length;
+ if (disk->flags & GENHD_FL_NO_PART)
+ return -EINVAL;
if (!capable(CAP_SYS_ADMIN))
return -EACCES;
if (copy_from_user(&p, upart, sizeof(struct blkpg_partition)))