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Diffstat (limited to 'fs/afs/dir.c')
-rw-r--r--fs/afs/dir.c47
1 files changed, 45 insertions, 2 deletions
diff --git a/fs/afs/dir.c b/fs/afs/dir.c
index b42d5cc1d6d..0d38c09bd55 100644
--- a/fs/afs/dir.c
+++ b/fs/afs/dir.c
@@ -477,6 +477,40 @@ static int afs_do_lookup(struct inode *dir, struct dentry *dentry,
}
/*
+ * Try to auto mount the mountpoint with pseudo directory, if the autocell
+ * operation is setted.
+ */
+static struct inode *afs_try_auto_mntpt(
+ int ret, struct dentry *dentry, struct inode *dir, struct key *key,
+ struct afs_fid *fid)
+{
+ const char *devname = dentry->d_name.name;
+ struct afs_vnode *vnode = AFS_FS_I(dir);
+ struct inode *inode;
+
+ _enter("%d, %p{%s}, {%x:%u}, %p",
+ ret, dentry, devname, vnode->fid.vid, vnode->fid.vnode, key);
+
+ if (ret != -ENOENT ||
+ !test_bit(AFS_VNODE_AUTOCELL, &vnode->flags))
+ goto out;
+
+ inode = afs_iget_autocell(dir, devname, strlen(devname), key);
+ if (IS_ERR(inode)) {
+ ret = PTR_ERR(inode);
+ goto out;
+ }
+
+ *fid = AFS_FS_I(inode)->fid;
+ _leave("= %p", inode);
+ return inode;
+
+out:
+ _leave("= %d", ret);
+ return ERR_PTR(ret);
+}
+
+/*
* look up an entry in a directory
*/
static struct dentry *afs_lookup(struct inode *dir, struct dentry *dentry,
@@ -520,6 +554,13 @@ static struct dentry *afs_lookup(struct inode *dir, struct dentry *dentry,
ret = afs_do_lookup(dir, dentry, &fid, key);
if (ret < 0) {
+ inode = afs_try_auto_mntpt(ret, dentry, dir, key, &fid);
+ if (!IS_ERR(inode)) {
+ key_put(key);
+ goto success;
+ }
+
+ ret = PTR_ERR(inode);
key_put(key);
if (ret == -ENOENT) {
d_add(dentry, NULL);
@@ -539,6 +580,7 @@ static struct dentry *afs_lookup(struct inode *dir, struct dentry *dentry,
return ERR_CAST(inode);
}
+success:
dentry->d_op = &afs_fs_dentry_operations;
d_add(dentry, inode);
@@ -696,8 +738,9 @@ static int afs_d_delete(struct dentry *dentry)
goto zap;
if (dentry->d_inode &&
- test_bit(AFS_VNODE_DELETED, &AFS_FS_I(dentry->d_inode)->flags))
- goto zap;
+ (test_bit(AFS_VNODE_DELETED, &AFS_FS_I(dentry->d_inode)->flags) ||
+ test_bit(AFS_VNODE_PSEUDODIR, &AFS_FS_I(dentry->d_inode)->flags)))
+ goto zap;
_leave(" = 0 [keep]");
return 0;