diff options
| author | San Mehat <san@google.com> | 2010-10-21 14:07:13 +0800 |
|---|---|---|
| committer | Lily Zhang <r58066@freescale.com> | 2010-11-22 09:38:30 +0800 |
| commit | 7bacd63f2f0a5d2aeed021f4508da27d699ac065 (patch) | |
| tree | 8c40ca21a5af8ad0387659ca6f7160aca305a9d9 | |
| parent | 61f9b474e76b9840e0ab6f1000b7fa1c09461827 (diff) | |
Android 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>
| -rw-r--r-- | block/genhd.c | 17 | ||||
| -rw-r--r-- | fs/partitions/check.c | 8 |
2 files changed, 25 insertions, 0 deletions
diff --git a/block/genhd.c b/block/genhd.c index 59a2db6fecef..aa628253bee1 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -1006,6 +1006,22 @@ static void disk_release(struct device *dev) free_part_stats(&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", }; @@ -1024,6 +1040,7 @@ static struct device_type disk_type = { .groups = disk_attr_groups, .release = disk_release, .devnode = block_devnode, + .uevent = disk_uevent, }; #ifdef CONFIG_PROC_FS diff --git a/fs/partitions/check.c b/fs/partitions/check.c index 5dcd4b0c5533..e37a2930189a 100644 --- a/fs/partitions/check.c +++ b/fs/partitions/check.c @@ -341,10 +341,18 @@ static void part_release(struct device *dev) kfree(p); } +static int part_uevent(struct device *dev, struct kobj_uevent_env *env) +{ + struct hd_struct *part = dev_to_part(dev); + add_uevent_var(env, "PARTN=%u", part->partno); + return 0; +} + struct device_type part_type = { .name = "partition", .groups = part_attr_groups, .release = part_release, + .uevent = part_uevent, }; static void delete_partition_rcu_cb(struct rcu_head *head) |