1.\" $MirOS: src/lib/libc/sys/utimes.2,v 1.2 2007/05/19 21:47:41 tg Exp $ 2.\" $OpenBSD: utimes.2,v 1.8 2003/06/02 20:18:39 millert Exp $ 3.\" $NetBSD: utimes.2,v 1.9 1996/04/23 10:34:16 mycroft Exp $ 4.\" 5.\" Copyright (c) 1990, 1993 6.\" The Regents of the University of California. All rights reserved. 7.\" 8.\" Redistribution and use in source and binary forms, with or without 9.\" modification, are permitted provided that the following conditions 10.\" are met: 11.\" 1. Redistributions of source code must retain the above copyright 12.\" notice, this list of conditions and the following disclaimer. 13.\" 2. Redistributions in binary form must reproduce the above copyright 14.\" notice, this list of conditions and the following disclaimer in the 15.\" documentation and/or other materials provided with the distribution. 16.\" 3. Neither the name of the University nor the names of its contributors 17.\" may be used to endorse or promote products derived from this software 18.\" without specific prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" @(#)utimes.2 8.1 (Berkeley) 6/4/93 33.\" 34.Dd May 19, 2007 35.Dt UTIMES 2 36.Os 37.Sh NAME 38.Nm utimes , 39.Nm lutimes , 40.Nm futimes 41.Nd set access and modification times of a file or link 42.Sh SYNOPSIS 43.Fd #include <sys/time.h> 44.Ft int 45.Fn utimes "const char *file" "const struct timeval *times" 46.Ft int 47.Fn lutimes "const char *file" "const struct timeval *times" 48.Ft int 49.Fn futimes "int fd" "const struct timeval *times" 50.Sh DESCRIPTION 51The access and modification times of the file named by 52.Fa path 53or referenced by 54.Fa fd 55are changed as specified by the argument 56.Fa times . 57.Fn lutimes 58operates similarly to 59.Fn utimes 60but does not follow symbolic links. 61It allows the permission bits of a symbolic link to be set. 62.Pp 63If 64.Fa times 65is 66.Dv NULL , 67the access and modification times are set to the current time. 68The caller must be the owner of the file, have permission to 69write the file, or be the superuser. 70.Pp 71If 72.Fa times 73is non-null, 74it is assumed to point to an array of two timeval structures. 75The access time is set to the value of the first element, and the 76modification time is set to the value of the second element. 77The caller must be the owner of the file or be the superuser. 78.Pp 79In either case, the inode-change-time of the file is set to the current 80time. 81.Sh RETURN VALUES 82Upon successful completion, a value of 0 is returned. 83Otherwise, a value of \-1 is returned and 84.Va errno 85is set to indicate the error. 86.Sh ERRORS 87.Fn utimes 88or 89.Fn lutimes 90will fail if: 91.Bl -tag -width Er 92.It Bq Er EACCES 93Search permission is denied for a component of the path prefix; 94or the 95.Fa times 96argument is 97.Dv NULL 98and the effective user ID of the process does not 99match the owner of the file, and is not the superuser, and write 100access is denied. 101.It Bq Er EFAULT 102.Pa File 103or 104.Fa times 105points outside the process's allocated address space. 106.It Bq Er EIO 107An I/O error occurred while reading or writing the affected inode. 108.It Bq Er ELOOP 109Too many symbolic links were encountered in translating the pathname. 110.It Bq Er ENAMETOOLONG 111A component of a pathname exceeded 112.Dv {NAME_MAX} 113characters, or an entire path name exceeded 114.Dv {PATH_MAX} 115characters. 116.It Bq Er ENOENT 117The named file does not exist. 118.It Bq Er ENOTDIR 119A component of the path prefix is not a directory. 120.It Bq Er EPERM 121The 122.Fa times 123argument is not 124.Dv NULL 125and the calling process's effective user ID 126does not match the owner of the file and is not the superuser. 127.It Bq Er EROFS 128The file system containing the file is mounted read-only. 129.El 130.Fn futimes 131will fail if: 132.Bl -tag -width Er 133.It Bq Er EBADF 134.Fa fd 135does not refer to a valid descriptor. 136.It Bq Er EACCES 137The 138.Fa times 139argument is 140.Dv NULL 141and the effective user ID of the process does not 142match the owner of the file, and is not the superuser, and write 143access is denied. 144.It Bq Er EFAULT 145.Fa times 146points outside the process's allocated address space. 147.It Bq Er EIO 148An I/O error occurred while reading or writing the affected inode. 149.It Bq Er EPERM 150The 151.Fa times 152argument is not 153.Dv NULL 154and the calling process's effective user ID 155does not match the owner of the file and is not the superuser. 156.It Bq Er EROFS 157The file system containing the file is mounted read-only. 158.El 159.Sh SEE ALSO 160.Xr stat 2 , 161.Xr utime 3 162.Sh HISTORY 163The 164.Fn utimes 165function call appeared in 166.Bx 4.2 . 167The 168.Fn futimes 169function call appeared in 170.Nx 1.2 . 171The 172.Fn lutimes 173function call appeared in 174.Mx 10 . 175