diff options
| author | San Mehat <san@google.com> | 2009-10-10 09:35:24 -0700 |
|---|---|---|
| committer | Colin Cross <ccross@android.com> | 2012-04-09 13:57:50 -0700 |
| commit | 38c6302d9f919410ea05a5820c05a7807573917e (patch) | |
| tree | 4772323ea3f8f6eecf28f47bc45b783cca9be5d7 /block/genhd.c | |
| parent | 2d39f683c5f48bfdd574d4c3c188ae9b15747c65 (diff) | |
block: genhd: Add disk/partition specific uevent callbacks for partition info
For disk devices, a new uevent parameter 'NPARTS' specifies the number
of partitions detected by the kernel. Partition devices get 'PARTN' which
specifies the partitions index in the table, and 'PARTNAME', which
specifies PARTNAME specifices the partition name of a partition device
Signed-off-by: Dima Zavin <dima@android.com>
Diffstat (limited to 'block/genhd.c')
| -rw-r--r-- | block/genhd.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/block/genhd.c b/block/genhd.c index df9816ede75..dba026281a3 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -1107,6 +1107,22 @@ static void disk_release(struct device *dev) blk_put_queue(disk->queue); kfree(disk); } + +static int disk_uevent(struct device *dev, struct kobj_uevent_env *env) +{ + struct gendisk *disk = dev_to_disk(dev); + struct disk_part_iter piter; + struct hd_struct *part; + int cnt = 0; + + disk_part_iter_init(&piter, disk, 0); + while((part = disk_part_iter_next(&piter))) + cnt++; + disk_part_iter_exit(&piter); + add_uevent_var(env, "NPARTS=%u", cnt); + return 0; +} + struct class block_class = { .name = "block", }; @@ -1125,6 +1141,7 @@ static struct device_type disk_type = { .groups = disk_attr_groups, .release = disk_release, .devnode = block_devnode, + .uevent = disk_uevent, }; #ifdef CONFIG_PROC_FS |