1 .\" Copyright (C) 1995 Andries Brouwer (aeb@cwi.nl)
3 .\" Permission is granted to make and distribute verbatim copies of this
4 .\" manual provided the copyright notice and this permission notice are
5 .\" preserved on all copies.
7 .\" Permission is granted to copy and distribute modified versions of this
8 .\" manual under the conditions for verbatim copying, provided that the
9 .\" entire resulting derived work is distributed under the terms of a
10 .\" permission notice identical to this one.
12 .\" Since the Linux kernel and libraries are constantly changing, this
13 .\" manual page may be incorrect or out-of-date. The author(s) assume no
14 .\" responsibility for errors or omissions, or for damages resulting from
15 .\" the use of the information contained herein. The author(s) may not
16 .\" have taken the same level of care in the production of this manual,
17 .\" which is licensed free of charge, as they might when working
20 .\" Formatted or processed versions of this manual, if unaccompanied by
21 .\" the source, must acknowledge the copyright and authors of this work.
23 .\" Written 10 June 1995 by Andries Brouwer <aeb@cwi.nl>
24 .\" Modified Thu Oct 31 15:16:23 1996 by Eric S. Raymond <esr@thyrsus.com>
26 .\" Japanese Version Copyright (c) 1997 HANATAKA Shinya
27 .\" all rights reserved.
28 .\" Translated Sun Feb 23 16:22:27 JST 1997
29 .\" by HANATAKA Shinya <hanataka@abyss.rim.or.jp>
30 .\" Updated & Modified Sat Jun 2 18:27:49 JST 2001
31 .\" by Yuichi SATO <ysato@h4.dion.ne.jp>
32 .\" Updated & Modified Sat Sep 6 17:05:03 JST 2003
33 .\" by Yuichi SATO <ysato444@yahoo.co.jp>
34 .\" Updated & Modified Fri Dec 31 00:50:01 JST 2004 by Yuichi SATO
37 .\"WORD: descriptor ディスクリプター
42 .TH LLSEEK 2 2007-06-01 "Linux" "Linux Programmer's Manual"
45 .\"O _llseek \- reposition read/write file offset
46 _llseek \- ファイルの読み書きオフセットの位置を変える
50 .B #include <sys/types.h>
51 .B #include <unistd.h>
53 .BI "int _llseek(unsigned int " fd ", unsigned long " offset_high ,
54 .BI " unsigned long " offset_low ", loff_t *" result ,
55 .BI " unsigned int " whence );
61 .\"O function repositions the offset of the open file associated
62 .\"O with the file descriptor
65 .\"O .I (offset_high<<32) | offset_low
66 .\"O bytes relative to the beginning of the file, the current position in the file,
67 .\"O or the end of the file, depending on whether
75 .\"O It returns the resulting file position in the argument
78 関数は、ファイル・ディスクリプター (descriptor)
80 に関連づけられたオープンされたファイルのオフセットの位置を、相対的に
81 .I (offset_high<<32) | offset_low
95 .\"O .SH "RETURN VALUE"
97 .\"O Upon successful completion,
100 .\"O Otherwise, a value of \-1 is returned and
102 .\"O is set to indicate the error.
106 そうでなれば \-1 という値が返り、エラーを示す
114 .\"O is not an open file descriptor.
116 がオープンされたファイル・ディスクリプターでない。
119 .\"O Problem with copying results to user space.
120 結果をユーザ空間にコピーするときに問題があった。
127 .\"O .SH "CONFORMING TO"
129 .\"O This function is Linux-specific, and should not be used in programs
130 .\"O intended to be portable.
131 この関数は Linux 特有であり、移植性の必要なプログラムでは使用してはいけない。
134 .\"O Glibc does not provide a wrapper for this system call; call it using
135 .\"O .BR syscall (2).
136 glibc はこのシステムコールに対するラッパー関数を提供していない。