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| author | Ed Cashin <ecashin@coraid.com> | 2013-09-11 14:25:41 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-09-11 15:59:24 -0700 |
| commit | 1cf94797c2bbc514c2bd0892e1774a0a8ca9afdb (patch) | |
| tree | 033aea3daa4046adf14484dc056f25fa95e92456 /drivers/block/aoe/aoeblk.c | |
| parent | e8866cf2b90f3a29859d2113c0fd23daf189c282 (diff) | |
| download | linux-1cf94797c2bbc514c2bd0892e1774a0a8ca9afdb.tar.gz linux-1cf94797c2bbc514c2bd0892e1774a0a8ca9afdb.tar.bz2 linux-1cf94797c2bbc514c2bd0892e1774a0a8ca9afdb.zip | |
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>
Diffstat (limited to 'drivers/block/aoe/aoeblk.c')
| -rw-r--r-- | drivers/block/aoe/aoeblk.c | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/drivers/block/aoe/aoeblk.c b/drivers/block/aoe/aoeblk.c index d76c5cb3c708..0511d38e412d 100644 --- a/drivers/block/aoe/aoeblk.c +++ b/drivers/block/aoe/aoeblk.c @@ -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) |