.\" Hey Emacs! This file is -*- nroff -*- source.
.\"
.\" Copyright (c) 1992 Drew Eckhardt (drew@cs.colorado.edu), March 28, 1992
.\"
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.\" manual provided the copyright notice and this permission notice are
.\" preserved on all copies.
.\"
.\" Permission is granted to copy and distribute modified versions of this
.\" manual under the conditions for verbatim copying, provided that the
.\" entire resulting derived work is distributed under the terms of a
.\" permission notice identical to this one.
.\"
.\" Since the Linux kernel and libraries are constantly changing, this
.\" manual page may be incorrect or out-of-date.  The author(s) assume no
.\" responsibility for errors or omissions, or for damages resulting from
.\" the use of the information contained herein.  The author(s) may not
.\" have taken the same level of care in the production of this manual,
.\" which is licensed free of charge, as they might when working
.\" professionally.
.\"
.\" Formatted or processed versions of this manual, if unaccompanied by
.\" the source, must acknowledge the copyright and authors of this work.
.\"
.\" Modified by Michael Haardt <michael@moria.de>
.\" Modified 1993-07-24 by Rik Faith <faith@cs.unc.edu>
.\" Modified 1995-06-10 by Andries Brouwer <aeb@cwi.nl>
.\" Modified 2004-06-23 by Michael Kerrisk <mtk.manpages@gmail.com>
.\" Modified 2004-10-10 by Andries Brouwer <aeb@cwi.nl>
.\"
.\" Japanese Version Copyright (c) 1997 SUTO, Mitsuaki
.\"         all rights reserved.
.\" Translated Thu Jun 26 21:28:00 JST 1997
.\"         by SUTO, Mitsuaki <suto@av.crl.sony.co.jp>
.\" Updated & Modified Tue Feb 15 03:21:17 JST 2005
.\"         by Yuichi SATO <ysato444@yahoo.co.jp>
.\" Updated 2006-07-21, Akihiro MOTOKI, LDP v2.36
.\" Updated 2007-10-13, Akihiro MOTOKI, LDP v2.65
.\"
.TH UTIME 2 2007-07-27 "Linux" "Linux Programmer's Manual"
.SH ̾
utime, utimes \- inode Υ/ѹ
.SH 
.nf
.B #include <sys/types.h>
.br
.B #include <utime.h>
.sp
.BI "int utime(const char *" filename ", const struct utimbuf *" buf );
.sp
.B #include <sys/time.h>
.sp
.BI "int utimes(const char *" filename ", const struct timeval " times [2]);
.fi
.SH 
.BR utime ()

.I filename
Ǽ inode ΥȽ
.I buf

.IR actime "  " modtime
ˤ줾ѹ롣

.I buf

.B NULL
ξ硢եΥȽϸߤλꤵ롣

ॹפѹϰʲξ˵Ĥ:
ץŬڤø (Linux Ǥ
.B CAP_FOWNER
ѥӥƥ (capability) )
ޤϼ¸ (effective) 桼 ID եΥ桼 ID 
ޤ
.I buf
 NULL ǡĥץեؤν񤭹ߵĤäƤ롣

¤
.I utimbuf
ϰʲ˼褦ˤʤäƤ롣

.in +4n
.nf
struct utimbuf {
    time_t actime;       /*  */
    time_t modtime;      /*  */
};
.fi
.in

ؿ
.BR utime ()
 1 äʬǽǥॹפꤹ뤳ȤǤ롣
.SS utimes()
ؿ
.BR utimes ()

.BR utime ()
ƱͤǤ뤬
.I times
 1 ޥäʬǽΥॹפꤹ뤳ȤǤ롣
¤
.I timeval
ϰʲ˼̤Ǥ롣

.in +4n
.nf
struct timeval {
    long tv_sec;        /*  */
    long tv_usec;       /* ޥ */
};
.fi
.in
.PP
.IR times [0]
Ͽ
.IR times [1]
Ͽꤹ롣
.I times
 NULL ξ硢
.BR utime ()
Ʊ͡եΥȽϸߤλꤵ롣
.SH ֤
 0 ֤롣Ԥ \-1 ֤ꡢ
.I errno
顼Ƥ˽äꤵ롣
.SH 顼
.TP
.B EACCES
.I path
벿줫Υǥ쥯ȥ˸Ĥʤ
.RB ( path_resolution (7)
⻲Ȥ뤳)
ޤ
.I buf
 NULL ǡĥץ˥ॹפѹĤʤ
(嵭򻲾Ȥ뤳)
.TP
.B ENOENT
.I filename
¸ߤʤ
.TP
.B EPERM
.I buf
 NULL Ǥʤĥץ˥ॹפѹĤʤ
.TP
.B EROFS
.I path
ɤ߹ѤΥե륷ƥˤ롣
.SH 
.BR utime ():
SVr4, POSIX.1-2001.
.\" SVr4 ˤ¾ EFAULT, EINTR, ELOOP, EMULTIHOP,
.\" ENAMETOOLONG, ENOLINK, ENOLINK, ENOTDIR Υ顼ɤˤĤƤεҤ롣
.br
.BR utimes ():
4.3BSD
.SH 
Linux Ǥϡ (immutable) եΥॹפѹꡢ
ɲ (append-only) Υե˸߻ʳΥॹפ
ꤷꤹ뤳ȤϡĤƤʤ

libc4  libc5 Ǥϡ
.BR utimes ()
ñ
.BR utime ()
Υåѡ (wrapper) Ǥ롣
Τðʲꤹ뤳ȤϤǤʤ

POSIX.1-2001 Ǥ
.BR utimes ()
ϲ̾ĤǤȤƤ뤬Ի׵ĤʤȤ
.BR utimes ()

.BR utime ()
ⵡǽǤ롣
.\" FIXME . SUSv4 may remove the legacy marking.
.SH Х
Linux 
.B EACCES

.B EPERM
顼ζ̤դʧäƤʤ
ޤ POSIX.1-2001 Ǥ
.BR utimes ()
Υ顼εҤ˥Х롣
.SH Ϣ
.BR chattr (1),
.BR futimesat (2),
.BR stat (2),
.BR futimes (3)