3 .\" The Regents of the University of California. All rights reserved.
5 .\" Redistribution and use in source and binary forms, with or without
6 .\" modification, are permitted provided that the following conditions
8 .\" 1. Redistributions of source code must retain the above copyright
9 .\" notice, this list of conditions and the following disclaimer.
10 .\" 2. Redistributions in binary form must reproduce the above copyright
11 .\" notice, this list of conditions and the following disclaimer in the
12 .\" documentation and/or other materials provided with the distribution.
13 .\" 3. Neither the name of the University nor the names of its contributors
14 .\" may be used to endorse or promote products derived from this software
15 .\" without specific prior written permission.
17 .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 .\" @(#)undelete.2 8.4 (Berkeley) 10/18/94
30 .\" $FreeBSD: src/lib/libc/sys/undelete.2,v 1.4.2.5 2001/12/14 18:34:02 ru Exp $
37 .Nd attempt to recover a deleted file
43 .Fn undelete "const char *path"
47 function attempts to recover the deleted file named by
49 Currently, this works only when the named object
50 is a whiteout in a union filesystem.
51 The system call removes the whiteout causing
52 any objects in a lower layer of the
53 union stack to become visible once more.
57 functionality may be expanded to other filesystems able to recover
58 deleted files such as the log-structured filesystem.
67 A component of the path prefix is not a directory.
68 .It Bq Er ENAMETOOLONG
69 A component of a pathname exceeded 255 characters,
70 or an entire path name exceeded 1023 characters.
72 The path does not reference a whiteout.
74 The named whiteout does not exist.
76 Search permission is denied for a component of the path prefix.
78 Write permission is denied on the directory containing the name
81 Too many symbolic links were encountered in translating the pathname.
83 The directory containing the name is marked sticky,
84 and the containing directory is not owned by the effective user ID.
86 An I/O error occurred while updating the directory entry.
88 The name resides on a read-only file system.
91 points outside the process's allocated address space.
98 function call first appeared in