19 #include <linux/path.h>
25 #include "include/path.h"
41 /* If the path is not connected to the expected root,
45  *     specifically directed to connect the path,
47  *     if in a chroot and doing chroot relative paths and the path
52 static int disconnect(const struct path *path, char *buf, char **name,  in disconnect()  argument
59 	      our_mnt(path->mnt))) {  in disconnect()
60 		/* disconnected path, don't return pathname starting  in disconnect()
79  * d_namespace_path - lookup a name associated with a given path
80  * @path: path to lookup  (NOT NULL)
81  * @buf:  buffer to store path to  (NOT NULL)
82  * @name: Returns - pointer for start of path name with in @buf (NOT NULL)
83  * @flags: flags controlling path lookup
86  * Handle path name lookup.
88  * Returns: %0 else error code if path lookup fails
89  *          When no error the path name is returned in @name which points to
92 static int d_namespace_path(const struct path *path, char *buf, char **name,  in d_namespace_path()  argument
101 	if (path->mnt->mnt_flags & MNT_INTERNAL) {  in d_namespace_path()
103 		res = dentry_path(path->dentry, buf, buflen);  in d_namespace_path()
109 		if (path->dentry->d_sb->s_magic == PROC_SUPER_MAGIC &&  in d_namespace_path()
117 			error = disconnect(path, buf, name, flags,  in d_namespace_path()
124 		struct path root;  in d_namespace_path()
126 		res = __d_path(path, &root, buf, buflen);  in d_namespace_path()
129 		res = d_absolute_path(path, buf, buflen);  in d_namespace_path()
130 		if (!our_mnt(path->mnt))  in d_namespace_path()
134 	/* handle error conditions - and still allow a partial path to  in d_namespace_path()
144 		res = dentry_path_raw(path->dentry, buf, buflen);  in d_namespace_path()
150 	} else if (!our_mnt(path->mnt))  in d_namespace_path()
156 		error = disconnect(path, buf, name, flags, disconnected);  in d_namespace_path()
164 	if (d_unlinked(path->dentry) && d_is_positive(path->dentry) &&  in d_namespace_path()
183  * @path: path the file  (NOT NULL)
184  * @flags: flags controlling path name generation
186  * @name: Returns - the generated path name if !error (NOT NULL)
187  * @info: Returns - information on why the path lookup failed (MAYBE NULL)
201 int aa_path_name(const struct path *path, int flags, char *buffer,  in aa_path_name()  argument
205 	int error = d_namespace_path(path, buffer, &str, flags, disconnected);  in aa_path_name()
211 			*info = "Failed name lookup - disconnected path";  in aa_path_name()