diff options
Diffstat (limited to 'fs/namei.c')
| -rw-r--r-- | fs/namei.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/fs/namei.c b/fs/namei.c index ae833dfa277c..696e4b794416 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -3275,6 +3275,54 @@ struct dentry *start_removing(struct mnt_idmap *idmap, struct dentry *parent, } EXPORT_SYMBOL(start_removing); +/** + * start_creating_noperm - prepare to create a given name without permission checking + * @parent: directory in which to prepare to create the name + * @name: the name to be created + * + * Locks are taken and a lookup in performed prior to creating + * an object in a directory. + * + * If the name already exists, a positive dentry is returned. + * + * Returns: a negative or positive dentry, or an error. + */ +struct dentry *start_creating_noperm(struct dentry *parent, + struct qstr *name) +{ + int err = lookup_noperm_common(name, parent); + + if (err) + return ERR_PTR(err); + return start_dirop(parent, name, LOOKUP_CREATE); +} +EXPORT_SYMBOL(start_creating_noperm); + +/** + * start_removing_noperm - prepare to remove a given name without permission checking + * @parent: directory in which to find the name + * @name: the name to be removed + * + * Locks are taken and a lookup in performed prior to removing + * an object from a directory. + * + * If the name doesn't exist, an error is returned. + * + * end_removing() should be called when removal is complete, or aborted. + * + * Returns: a positive dentry, or an error. + */ +struct dentry *start_removing_noperm(struct dentry *parent, + struct qstr *name) +{ + int err = lookup_noperm_common(name, parent); + + if (err) + return ERR_PTR(err); + return start_dirop(parent, name, 0); +} +EXPORT_SYMBOL(start_removing_noperm); + #ifdef CONFIG_UNIX98_PTYS int path_pts(struct path *path) { |