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| author | Kay Sievers <kay.sievers@vrfy.org> | 2008-06-13 09:41:00 +0200 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2008-07-03 13:21:12 +0200 |
| commit | 1c9ce5276324ae566ca409491b99a2cc8d5986fa (patch) | |
| tree | eca8ad1317880de5da3f7126e746d366f699348d /block | |
| parent | 02c62304e6af60f1963695c6bc1bbffe619aa585 (diff) | |
| download | blackbird-op-linux-1c9ce5276324ae566ca409491b99a2cc8d5986fa.tar.gz blackbird-op-linux-1c9ce5276324ae566ca409491b99a2cc8d5986fa.zip | |
block: export "ro" attribute
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'block')
| -rw-r--r-- | block/genhd.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/block/genhd.c b/block/genhd.c index b922d4801c87..43e468ee5993 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -400,6 +400,14 @@ static ssize_t disk_removable_show(struct device *dev, (disk->flags & GENHD_FL_REMOVABLE ? 1 : 0)); } +static ssize_t disk_ro_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct gendisk *disk = dev_to_disk(dev); + + return sprintf(buf, "%d\n", disk->policy ? 1 : 0); +} + static ssize_t disk_size_show(struct device *dev, struct device_attribute *attr, char *buf) { @@ -472,6 +480,7 @@ static ssize_t disk_fail_store(struct device *dev, static DEVICE_ATTR(range, S_IRUGO, disk_range_show, NULL); static DEVICE_ATTR(removable, S_IRUGO, disk_removable_show, NULL); +static DEVICE_ATTR(ro, S_IRUGO, disk_ro_show, NULL); static DEVICE_ATTR(size, S_IRUGO, disk_size_show, NULL); static DEVICE_ATTR(capability, S_IRUGO, disk_capability_show, NULL); static DEVICE_ATTR(stat, S_IRUGO, disk_stat_show, NULL); @@ -483,6 +492,7 @@ static struct device_attribute dev_attr_fail = static struct attribute *disk_attrs[] = { &dev_attr_range.attr, &dev_attr_removable.attr, + &dev_attr_ro.attr, &dev_attr_size.attr, &dev_attr_capability.attr, &dev_attr_stat.attr, |
