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.\" Hey Emacs! This file is -*- nroff -*- source.
.\"
.\" Copyright (c) 1995 Michael Chastain (mec@shell.portal.com), 15 April 1995.
.\"
.\" This is free documentation; you can redistribute it and/or
.\" modify it under the terms of the GNU General Public License as
.\" published by the Free Software Foundation; either version 2 of
.\" the License, or (at your option) any later version.
.\"
.\" The GNU General Public License's references to "object code"
.\" and "executables" are to be interpreted as the output of any
.\" document formatting or typesetting system, including
.\" intermediate and printed output.
.\"
.\" This manual is distributed in the hope that it will be useful,
.\" but WITHOUT ANY WARRANTY; without even the implied warranty of
.\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
.\" GNU General Public License for more details.
.\"
.\" You should have received a copy of the GNU General Public
.\" License along with this manual; if not, write to the Free
.\" Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111,
.\" USA.
.\"
.\" Modified 1997-01-31 by Eric S. Raymond <esr@thyrsus.com>
.\" Modified 1997-07-30 by Paul Slootman <paul@wurtel.demon.nl>
.\" Modified 2004-05-27 by Michael Kerrisk <mtk.manpages@gmail.com>
.\"
.\" Japanese Version Copyright (c) 1997 HANATAKA Shinya
.\" all rights reserved.
.\" Translated 1997-12-17, HANATAKA Shinya <hanataka@abyss.rim.or.jp>
.\" Updated and Modified 2001-06-12,Yuichi SATO <ysato@h4.dion.ne.jp>
.\" Updated and Modified 2004-12-28, Yuichi SATO <ysato444@yahoo.co.jp>
.\" Updated 2006-07-16, Akihiro MOTOKI <amotoki@dd.iij4u.or.jp>, LDP v2.34
.\"
.\"WORD: kernel ͥ
.\"WORD: algorithm 르ꥺ
.\"WORD: update
.\"WORD: parameter ѥ
.\"WORD: field ե
.\"WORD: super user ѡ桼
.\"WORD: timer ޡ
.\"WORD: interrupt
.\"WORD: memory
.\"
.TH ADJTIMEX 2 2004-05-27 "Linux" "Linux Programmer's Manual"
.SH ̾
adjtimex \- ͥλפĴ
.SH
.B #include <sys/timex.h>
.sp
.BI "int adjtimex(struct timex *" "buf" );
.SH
Linux David L. Mill λĴᥢ르ꥺѤƤ
(RFC\ 1305 )
ƥॳ
.BR adjtimex ()
ϤΥ르ꥺĴΥѥɤäꡢꤷꤹ롣
δؿ
.I timex
¤ΤؤΥݥꡢͤǥͥΥѥơ
Ʊ¤Τ˸ߤΥ֤ͥͤ
ι¤ΤϰʲΤ褦:
.PP
.in +4n
.nf
struct timex {
int modes; /* mode selector */
long offset; /* time offset (usec) */
long freq; /* frequency offset (scaled ppm) */
.\" FIXME -- what is the scaling unit? 2^16 ?
long maxerror; /* maximum error (usec) */
long esterror; /* estimated error (usec) */
int status; /* clock command/status */
long constant; /* pll time constant */
long precision; /* clock precision (usec) (read-only) */
long tolerance; /* clock frequency tolerance (ppm)
(read-only) */
struct timeval time; /* current time (read-only) */
long tick; /* usecs between clock ticks */
};
.fi
.in
.PP
.I modes
եɤ (ɬפ˱) ɤΥѥꤹ뤫ꤹ롣
ϰʲΥӥåͤ 0 İʾ
.RI "ӥå " OR
ʤ:
.PP
.in +4n
.nf
#define ADJ_OFFSET 0x0001 /* time offset */
#define ADJ_FREQUENCY 0x0002 /* frequency offset */
#define ADJ_MAXERROR 0x0004 /* maximum time error */
#define ADJ_ESTERROR 0x0008 /* estimated time error */
#define ADJ_STATUS 0x0010 /* clock status */
#define ADJ_TIMECONST 0x0020 /* pll time constant */
#define ADJ_TICK 0x4000 /* tick value */
#define ADJ_OFFSET_SINGLESHOT 0x8001 /* old-fashioned adjtime() */
.fi
.in
.PP
̾Υ桼
.I mode
ͤ 0 ¤Ƥ롣
ѡ桼ΤߤƤΥѥǤ롣
.br
.ne 12v
.SH ֤
硢
.BR adjtimex ()
åξ֤֤:
.PP
.in +4n
.nf
#define TIME_OK 0 /* clock synchronized */
#define TIME_INS 1 /* insert leap second */
#define TIME_DEL 2 /* delete leap second */
#define TIME_OOP 3 /* leap second in progress */
#define TIME_BAD 4 /* clock not synchronized */
.fi
.in
.PP
Ԥ
.BR adjtimex ()
\-1 ֤
.I errno
ꤵ롣
.SH 顼
.TP
.B EFAULT
.I buf
߲ǽʥؤƤʤ
.TP
.B EINVAL
.I buf.offset
\-131071 +131071 ϰϰʳͤꤷ褦Ȥ
.I buf.status
˾嵭ʳͤꤷ褦Ȥ
.I buf.tick
.RB 900000/ HZ
.RB 1100000/ HZ
ϰϰʳͤꤷ褦Ȥ
.B HZ
ϥƥΥޡߤμǤ롣
.TP
.B EPERM
.I buf.mode
0 ǤʤĸƤӽФʬøäƤʤ
Linux Ǥ
.B CAP_SYS_TIME
ѥӥƥɬפǤ롣
.SH
.BR adjtimex ()
Linux ͭǤꡢ
ܿտޤץǻѤ٤ǤϤʤ
ƥ९åĴˡǡ
ܿ뤬ͳ٤ˡˤĤƤ
.BR adjtime (3)
ȤΤȡ
.SH Ϣ
.BR settimeofday (2),
.BR adjtime (3),
.BR capabilities (7),
.BR time (7)
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