1.\" $NetBSD: utime.3,v 1.14 1999/03/22 19:44:48 garbled Exp $ 2.\" 3.\" Copyright (c) 1980, 1991, 1993 4.\" The Regents of the University of California. All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 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. All advertising materials mentioning features or use of this software 15.\" must display the following acknowledgement: 16.\" This product includes software developed by the University of 17.\" California, Berkeley and its contributors. 18.\" 4. Neither the name of the University nor the names of its contributors 19.\" may be used to endorse or promote products derived from this software 20.\" without specific prior written permission. 21.\" 22.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32.\" SUCH DAMAGE. 33.\" 34.\" @(#)utime.3 8.1 (Berkeley) 6/4/93 35.\" 36.Dd August 13, 1993 37.Dt UTIME 3 38.Os 39.Sh NAME 40.Nm utime 41.Nd set file times 42.Sh LIBRARY 43.Lb libc 44.Sh SYNOPSIS 45.Fd #include <sys/types.h> 46.Fd #include <utime.h> 47.Ft int 48.Fn utime "const char *file" "const struct utimbuf *timep" 49.Sh DESCRIPTION 50.Bf -symbolic 51This interface is obsoleted by 52.Xr utimes 2 . 53.Ef 54.Pp 55The 56.Fn utime 57function sets the access and modification times of the named file. 58.Pp 59If 60.Fa timep 61is 62.Dv NULL , 63the access and modification times are set to the current time. 64The calling process must be the owner of the file or have permission to 65write the file. 66.Pp 67If 68.Fa timep 69is 70.Pf non- Dv NULL , 71.Fa time 72is assumed to be a pointer to a utimbuf structure, as defined in 73.Aq Pa utime.h : 74.Bd -literal -offset indent 75struct utimbuf { 76 time_t actime; /* Access time */ 77 time_t modtime; /* Modification time */ 78}; 79.Ed 80.Pp 81The access time is set to the value of the actime member, and the 82modification time is set to the value of the modtime member. 83The times are measured in seconds since 0 hours, 0 minutes, 0 84seconds, January 1, 1970 Coordinated Universal Time (UTC). 85The calling process must be the owner of the file or be the super-user. 86.Pp 87In either case, the inode-change-time of the file is set to the current 88time. 89.Sh RETURN VALUES 90Upon successful completion, a value of 0 is returned. 91Otherwise, a value of -1 is returned and 92.Va errno 93is set to indicate the error. 94.Sh ERRORS 95.Fn utime 96will fail if: 97.Bl -tag -width Er 98.It Bq Er EACCES 99Search permission is denied for a component of the path prefix; 100or the 101.Fa times 102argument is 103.Dv NULL 104and the effective user ID of the process does not 105match the owner of the file, and is not the super-user, and write 106access is denied. 107.It Bq Er EFAULT 108.Fa file 109or 110.Fa times 111points outside the process's allocated address space. 112.It Bq Er EINVAL 113The pathname contains a character with the high-order bit set. 114.It Bq Er EIO 115An I/O error occurred while reading or writing the affected inode. 116.It Bq Er ELOOP 117Too many symbolic links were encountered in translating the pathname. 118.It Bq Er ENAMETOOLONG 119A component of a pathname exceeded 255 characters, 120or an entire path name exceeded 1023 characters. 121.It Bq Er ENOENT 122The named file does not exist. 123.It Bq Er ENOTDIR 124A component of the path prefix is not a directory. 125.It Bq Er EPERM 126The 127.Fa times 128argument is not 129.Dv NULL 130and the calling process's effective user ID 131does not match the owner of the file and is not the super-user. 132.It Bq Er EROFS 133The file system containing the file is mounted read-only. 134.El 135.Sh SEE ALSO 136.Xr stat 2 , 137.Xr utimes 2 138.Sh STANDARDS 139The 140.Fn utime 141function conforms to 142.St -p1003.1-90 . 143.Sh HISTORY 144A 145.Fn utime 146function appeared in 147.At v7 . 148