From 1c9ce5276324ae566ca409491b99a2cc8d5986fa Mon Sep 17 00:00:00 2001 From: Kay Sievers Date: Fri, 13 Jun 2008 09:41:00 +0200 Subject: block: export "ro" attribute Signed-off-by: Kay Sievers Signed-off-by: Jens Axboe --- block/genhd.c | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'block/genhd.c') diff --git a/block/genhd.c b/block/genhd.c index b922d4801c8..43e468ee599 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, -- cgit v1.2.3