1 .\" $NetBSD: utimes.2,v 1.26 2010/04/29 17:02:38 jruoho Exp $
3 .\" Copyright (c) 1990, 1993
4 .\" The Regents of the University of California. All rights reserved.
6 .\" Redistribution and use in source and binary forms, with or without
7 .\" modification, are permitted provided that the following conditions
9 .\" 1. Redistributions of source code must retain the above copyright
10 .\" notice, this list of conditions and the following disclaimer.
11 .\" 2. Redistributions in binary form must reproduce the above copyright
12 .\" notice, this list of conditions and the following disclaimer in the
13 .\" documentation and/or other materials provided with the distribution.
14 .\" 3. Neither the name of the University nor the names of its contributors
15 .\" may be used to endorse or promote products derived from this software
16 .\" without specific prior written permission.
18 .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
19 .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
22 .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 .\" @(#)utimes.2 8.1 (Berkeley) 6/4/93
39 .Nd set file access and modification times
45 .Fn utimes "const char *path" "const struct timeval times[2]"
47 .Fn lutimes "const char *path" "const struct timeval times[2]"
49 .Fn futimes "int fd" "const struct timeval times[2]"
51 The access and modification times of the file named by
55 are changed as specified by the argument
62 the access and modification times are set to the current time.
63 The caller must be the owner of the file, have permission to
64 write the file, or be the super-user.
70 it is assumed to point to an array of two timeval structures.
71 The access time is set to the value of the first element, and the
72 modification time is set to the value of the second element.
73 For file systems that support file birth (creation) times (such as
74 UFS2), the birth time will be set to the value of the second element
75 if the second element is older than the currently set birth time.
76 To set both a birth time and a modification time, two calls are
77 required; the first to set the birth time and the second to set
78 the (presumably newer) modification time.
79 Ideally a new system call will be added that allows the setting of
80 all three times at once.
81 The caller must be the owner of the file or be the super-user.
83 In either case, the inode-change-time of the file is set to the current
89 except in the case where the named file is a symbolic link,
92 changes the access and modification times of the link,
95 changes the times of the file the link references.
97 Upon successful completion, a value of 0 is returned.
98 Otherwise, a value of \-1 is returned and
100 is set to indicate the error.
108 Search permission is denied for a component of the path prefix;
113 and the effective user ID of the process does not
114 match the owner of the file, and is not the super-user, and write
120 points outside the process's allocated address space.
122 An I/O error occurred while reading or writing the affected inode.
124 Too many symbolic links were encountered in translating the pathname.
125 .It Bq Er ENAMETOOLONG
126 A component of a pathname exceeded
128 characters, or an entire path name exceeded
132 The named file does not exist.
134 A component of the path prefix is not a directory.
140 and the calling process's effective user ID
141 does not match the owner of the file and is not the super-user.
143 The file system containing the file is mounted read-only.
154 and the effective user ID of the process does not
155 match the owner of the file, and is not the super-user, and write
159 does not refer to a valid descriptor.
162 points outside the process's allocated address space.
164 An I/O error occurred while reading or writing the affected inode.
170 and the calling process's effective user ID
171 does not match the owner of the file and is not the super-user.
173 The file system containing the file is mounted read-only.
184 It was however marked as legacy in the
190 function call appeared in
194 function call appeared in
198 function call appeared in
200 Birthtime setting support was added in