diff options
| author | San Mehat <san@google.com> | 2011-10-09 02:20:16 +0100 |
|---|---|---|
| committer | Andy Green <andy.green@linaro.org> | 2011-10-17 10:20:58 +0800 |
| commit | 3b7ad5f3162ebeb5332d17650c3d275a3fdc8799 (patch) | |
| tree | 38bfb4b2da53c3f28a7d2478ed2614c08032e427 /block | |
| parent | 435d7172ff8390c2dab96d6a41862eae3c4012e7 (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.
Signed-off-by: San Mehat <san@google.com>
Diffstat (limited to 'block')
| -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 e2f67902dd0..558d7a44272 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -1097,6 +1097,22 @@ static void disk_release(struct device *dev) free_part_info(&disk->part0); 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", }; @@ -1115,6 +1131,7 @@ static struct device_type disk_type = { .groups = disk_attr_groups, .release = disk_release, .devnode = block_devnode, + .uevent = disk_uevent, }; #ifdef CONFIG_PROC_FS |