Piteball
/
android_kernel_google_msm
mirror of https://github.com/followmsi/android_kernel_google_msm.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

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>
(cherry picked from commit 38c6302d9f)
This commit is contained in:
San Mehat 2009-10-10 09:35:24 -07:00 committed by Stephen Boyd
parent b3e662e5d0
commit 5298aae23f
2 changed files with 28 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
block/genhd.c
View File

@ -1109,6 +1109,22 @@ 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",
};
@ -1127,6 +1143,7 @@ static struct device_type disk_type = {
.groups = disk_attr_groups,
.release = disk_release,
.devnode = block_devnode,
.uevent = disk_uevent,
};
#ifdef CONFIG_PROC_FS

11
block/partition-generic.c
View File

@ -216,10 +216,21 @@ 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);
if (part->info && part->info->volname[0])
add_uevent_var(env, "PARTNAME=%s", part->info->volname);
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)