imrcpan/erofs-linux
1
0 Fork 0
mirror of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git synced 2026-11-01 14:53:11 +01:00
Code Issues Packages Projects Releases Wiki Activity

block: don't add or resize partition on the disk with GENHD_FL_NO_PART

Browse Source 
Commit a33df75c63 ("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: a33df75c63 ("block: use an xarray for disk->part_tbl")
Signed-off-by: Li Lingfeng <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Li Lingfeng authored and Jens Axboe committed 2023-08-31 08:00:35 -06:00
1 parent 0d997f1de8
commit 1a721de848
1 file changed
+2
Download Patch File Download Diff File Expand all files Collapse all files
block/ioctl.c
+2
View File
@@ -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)))