@@ -414,6 +414,7 @@ void blk_free_ext_minor(unsigned int minor);
#define ADDPART_FLAG_NONE 0
#define ADDPART_FLAG_RAID 1
#define ADDPART_FLAG_WHOLEDISK 2
+#define ADDPART_FLAG_READONLY 4
int bdev_add_partition(struct gendisk *disk, int partno, sector_t start,
sector_t length);
int bdev_del_partition(struct gendisk *disk, int partno);
@@ -398,6 +398,9 @@ static struct block_device *add_partition(struct gendisk *disk, int partno,
goto out_del;
}
+ if (flags & ADDPART_FLAG_READONLY)
+ bdev->bd_read_only = true;
+
/* everything is up and running, commence */
err = xa_insert(&disk->part_tbl, partno, bdev, GFP_KERNEL);
if (err)
Add flag ADDPART_FLAG_READONLY to allow partition parsers marking a partition to be set read-only. This is needed for the uImage.FIT partition parser added by a follow-up commit: we need to be sure the contents of uImage.FIT sub-images remain unaltered they are validated using a hash within the uImage.FIT structure which also serves as partition table. Signed-off-by: Daniel Golle <daniel@makrotopia.org> --- block/blk.h | 1 + block/partitions/core.c | 3 +++ 2 files changed, 4 insertions(+)