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aoe: provide file operations for debugfs files 

The place holder in the file contents is filled out in the following
patch.

Signed-off-by: Ed Cashin <ecashin@coraid.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Ed Cashin 2013-09-11 14:25:41 -07:00 committed by Linus Torvalds
parent e8866cf2b9
commit 1cf94797c2
1 changed files with 24 additions and 1 deletions
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25
drivers/block/aoe/aoeblk.c
View File

@ -110,6 +110,24 @@ static ssize_t aoedisk_show_payload(struct device *dev,
return snprintf(page, PAGE_SIZE, "%lu\n", d->maxbcnt);
}
static int aoedisk_debugfs_show(struct seq_file *s, void *ignored)
{
struct aoedev *d;
unsigned long flags;
d = s->private;
spin_lock_irqsave(&d->lock, flags);
seq_printf(s, "%s\n", d->gd->disk_name); /* place holder */
spin_unlock_irqrestore(&d->lock, flags);
return 0;
}
static int aoe_debugfs_open(struct inode *inode, struct file *file)
{
return single_open(file, aoedisk_debugfs_show, inode->i_private);
}
static DEVICE_ATTR(state, S_IRUGO, aoedisk_show_state, NULL);
static DEVICE_ATTR(mac, S_IRUGO, aoedisk_show_mac, NULL);
static DEVICE_ATTR(netif, S_IRUGO, aoedisk_show_netif, NULL);
@ -132,7 +150,12 @@ static const struct attribute_group attr_group = {
.attrs = aoe_attrs,
};
static const struct file_operations aoe_debugfs_fops;
static const struct file_operations aoe_debugfs_fops = {
.open = aoe_debugfs_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static void
aoedisk_add_debugfs(struct aoedev *d)