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| author | San Mehat <san@google.com> | 2009-10-10 09:35:24 -0700 |
|---|---|---|
| committer | Erik Gilling <konkers@android.com> | 2011-03-30 10:03:27 -0700 |
| commit | c0fb617d7b799d498f90d68b2f376fd191277233 (patch) | |
| tree | 8464357c113c651db827d4c5356a74c2cd9bb201 | |
| parent | 0ce790e7d736cedc563e1fb4e998babf5a4dbc3d (diff) | |
| download | experimental-c0fb617d7b799d498f90d68b2f376fd191277233.tar.gz | |
block: genhd: Add disk/partition specific uevent callbacks for partition info
For disk and partition devices, add new uevent parameters:
NPARTS specifies the number of partitions on a disk device
PARTN specifies the partition number of a partition device
PARTNAME specifices the partition name of a partition device
Signed-off-by: San Mehat <san@google.com>
Signed-off-by: Colin Cross <ccross@android.com>
Signed-off-by: Brian Swetland <swetland@google.com>
| -rw-r--r-- | block/genhd.c | 17 | ||||
| -rw-r--r-- | fs/partitions/check.c | 11 |
2 files changed, 28 insertions, 0 deletions
diff --git a/block/genhd.c b/block/genhd.c index c91a2dac6b6..ff50323688e 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 diff --git a/fs/partitions/check.c b/fs/partitions/check.c index ac546975031..a4abb597734 100644 --- a/fs/partitions/check.c +++ b/fs/partitions/check.c @@ -366,10 +366,21 @@ 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) |