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| author | Jens Axboe <axboe@kernel.dk> | 2023-01-04 14:44:02 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2023-01-04 14:44:02 -0700 |
| commit | 050a4f341f35bf51db321c7f68700f9e0b1a7552 (patch) | |
| tree | dc5209fd948a2a85c593ac84b6ef2fd69886fe58 | |
| parent | ee4b4e2248565babfba807d82c0f3e00c392a4c0 (diff) | |
Revert "block: remove devnode callback from struct block_device_operations"
This reverts commit 85d6ce58e493ac8b7122e2fbe3f41b94d6ebdc11.
We're reinstating the pktcdvd driver, which needs this API.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
| -rw-r--r-- | block/genhd.c | 11 | ||||
| -rw-r--r-- | include/linux/blkdev.h | 1 |
2 files changed, 12 insertions, 0 deletions
diff --git a/block/genhd.c b/block/genhd.c index 08f76135a637..14329dc278b2 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -1201,10 +1201,21 @@ struct class block_class = { .dev_uevent = block_uevent, }; +static char *block_devnode(struct device *dev, umode_t *mode, + kuid_t *uid, kgid_t *gid) +{ + struct gendisk *disk = dev_to_disk(dev); + + if (disk->fops->devnode) + return disk->fops->devnode(disk, mode); + return NULL; +} + const struct device_type disk_type = { .name = "disk", .groups = disk_attr_groups, .release = disk_release, + .devnode = block_devnode, }; #ifdef CONFIG_PROC_FS diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 301cf1cf4f2f..43d4e073b111 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -1395,6 +1395,7 @@ struct block_device_operations { void (*swap_slot_free_notify) (struct block_device *, unsigned long); int (*report_zones)(struct gendisk *, sector_t sector, unsigned int nr_zones, report_zones_cb cb, void *data); + char *(*devnode)(struct gendisk *disk, umode_t *mode); /* returns the length of the identifier or a negative errno: */ int (*get_unique_id)(struct gendisk *disk, u8 id[16], enum blk_unique_id id_type); |