1.\" Copyright (c) 1990 The Regents of the University of California. 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 3. All advertising materials mentioning features or use of this software 13.\" must display the following acknowledgement: 14.\" This product includes software developed by the University of 15.\" California, Berkeley and its contributors. 16.\" 4. 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 6.7 (Berkeley) 4/19/91 33.\" 34.Dd April 19, 1991 35.Dt UTIMES 2 36.Os BSD 4 37.Sh NAME 38.Nm utimes 39.Nd set file access and modification times 40.Sh SYNOPSIS 41.Fd #include <sys/time.h> 42.Ft int 43.Fn utimes "const char *file" "const struct timeval *times" 44.Sh DESCRIPTION 45The 46.Fn utimes 47function sets the access and modification times of the named. 48.Pp 49If 50.Fa times 51is 52.Dv NULL , 53the access and modification times are set to the current time. 54The caller must be the owner of the file, have permission to 55write the file, or be the super-user. 56.Pp 57If 58.Fa times 59is 60.Pf non- Dv NULL , 61it is assumed to point to an array of two timeval structures. 62The access time is set to the value of the first element, and the 63modification time is set to the value of the second element. 64The caller must be the owner of the file or be the super-user. 65.Pp 66In either case, the inode-change-time of the file is set to the current 67time. 68.Sh RETURN VALUES 69Upon successful completion, a value of 0 is returned. 70Otherwise, a value of -1 is returned and 71.Va errno 72is set to indicate the error. 73.Sh ERRORS 74.Fn Utimes 75will fail if: 76.Bl -tag -width Er 77.It Bq Er EACCES 78Search permission is denied for a component of the path prefix; 79or the 80.Fa times 81argument is 82.Dv NULL 83and the effective user ID of the process does not 84match the owner of the file, and is not the super-user, and write 85access is denied. 86.It Bq Er EFAULT 87.Xr File 88or 89.Fa times 90points outside the process's allocated address space. 91.It Bq Er EIO 92An I/O error occurred while reading or writing the affected inode. 93.It Bq Er ELOOP 94Too many symbolic links were encountered in translating the pathname. 95.It Bq Er ENAMETOOLONG 96A component of a pathname exceeded 97.Dv {NAME_MAX} 98characters, or an entire path name exceeded 99.Dv {PATH_MAX} 100characters. 101.It Bq Er ENOENT 102The named file does not exist. 103.It Bq Er ENOTDIR 104A component of the path prefix is not a directory. 105.It Bq Er EPERM 106The 107.Fa times 108argument is not 109.Dv NULL 110and the calling process's effective user ID 111does not match the owner of the file and is not the super-user. 112.It Bq Er EROFS 113The file system containing the file is mounted read-only. 114.El 115.Sh SEE ALSO 116.Xr stat 2 , 117.Xr utime 3 118.Sh HISTORY 119The 120.Fn utimes 121function call appeared in 122.Bx 4.2 . 123