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cifs: update super_operations to show_devname

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This is needed so that we display the correct //server/share vs
\\server\share in /proc/mounts for the device name (in the new
mount API).

Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Shyam Prasad N <sprasad@microsoft.com>
This commit is contained in:
Steve French 2020-12-14 20:08:10 -06:00
parent 5c4b642141
commit 653a5efb84
1 changed files with 21 additions and 0 deletions
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21
fs/cifs/cifsfs.c
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@ -462,6 +462,25 @@ cifs_show_cache_flavor(struct seq_file *s, struct cifs_sb_info *cifs_sb)
seq_puts(s, "loose");
}
/*
* cifs_show_devname() is used so we show the mount device name with correct
* format (e.g. forward slashes vs. back slashes) in /proc/mounts
*/
static int cifs_show_devname(struct seq_file *m, struct dentry *root)
{
struct cifs_sb_info *cifs_sb = CIFS_SB(root->d_sb);
char *devname = kstrdup(cifs_sb->ctx->UNC, GFP_KERNEL);
if (devname == NULL)
seq_puts(m, "none");
else {
convert_delimiter(devname, '/');
seq_puts(m, devname);
kfree(devname);
}
return 0;
}
/*
* cifs_show_options() is for displaying mount options in /proc/mounts.
* Not all settable options are displayed but most of the important
@ -695,6 +714,8 @@ static const struct super_operations cifs_super_ops = {
.free_inode = cifs_free_inode,
.drop_inode = cifs_drop_inode,
.evict_inode = cifs_evict_inode,
/* .show_path = cifs_show_path, */ /* Would we ever need show path? */
.show_devname = cifs_show_devname,
/* .delete_inode = cifs_delete_inode, */ /* Do not need above
function unless later we add lazy close of inodes or unless the
kernel forgets to call us with the same number of releases (closes)