diff options
| author | San Mehat <san@google.com> | 2009-10-10 09:35:24 -0700 |
|---|---|---|
| committer | Brian Swetland <swetland@google.com> | 2011-03-29 13:57:52 -0700 |
| commit | 92dc67146f172a8021155a016265b1a10e77062b (patch) | |
| tree | 9927bdcdc9b69f9378eb1b17aa5ca39c4e37cf0e /block | |
| parent | 0ee06fc9cae575fa4dc8592f0d447c9f51a3ef6b (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 cbf1112a885c..e70544beb83e 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -1105,6 +1105,22 @@ 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", }; @@ -1123,6 +1139,7 @@ static struct device_type disk_type = { .groups = disk_attr_groups, .release = disk_release, .devnode = block_devnode, + .uevent = disk_uevent, }; #ifdef CONFIG_PROC_FS |