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.\" (c) 1993 by Thomas Koenig (ig25@rz.uni-karlsruhe.de)
.\"
.\" Permission is granted to make and distribute verbatim copies of this
.\" 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.\" manual page may be incorrect or out-of-date.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.
.\" License.
.\" Modified Sat Jul 24 19:53:02 1993 by Rik Faith (faith@cs.unc.edu)
.\"
.\" Japanese Version Copyright (c) 1997 Hiroaki Nagoya
.\" all rights reserved.
.\" Translated by Hiroaki Nagoya <nagoya@is.titech.ac.jp>
.TH CONFSTR 3 "April 17, 1993" "GNU" "Linux Programmer's Manual"
.SH ̾
confstr \- ե졼˰¸ʸѿμ
.SH
.nf
.B #define _POSIX_C_SOURCE 2
ޤ
.B #define _XOPEN_SOURCE
.nl
.B #include <unistd.h>
.sp
.BI "size_t confstr(int " "name" ", char *" buf ", size_t " len );
.fi
.SH
.B confstr()
ϥե졼˰¸ʸѿͤ롣
.PP
.I name
䤤碌ΤΥƥѿǤ롣
ѿݡȤƤ롣
.TP
.B _CS_PATH
٤ƤPOSIX.2ɸ桼ƥƥߤĤ褦
.B PATH
͡
.PP
.I buf
.BR NULL
Ǥʤ
.I len
0Ǥʤ
.B confstr()
ϼʸƤ
.I buf
˥ԡ롣ɬפʤĹ
.I len \- 1
ʸڤΤƤƥ̥ʸǽü롣
.B confstr()
֤ͤ
.IR len
ӤȽǤ롣
.PP
⤷
.I len
0
.I buf
.BR NULL
ʤ
.B confstr()
Ͼ줿(: ڤΤƤΡʸĹ)֤
.SH ֤
⤷
.I name
ե졼ѿбƤʤС
.B confstr()
0֤
.SH
ʬŪʥɤPOSIX.2ƥΥ桼ƥƥѥ
ꤹ롣
.br
.nf
.in 10
char *pathbuf; size_t n;
n = confstr(_CS_PATH,NULL,(size_t)0);
if ((pathbuf = malloc(n)) == NULL) abort();
confstr(_CS_PATH, pathbuf, n);
.SH 顼
⤷
.I name
ͤǤäʤС
.I errno
.BR EINVAL
˥åȤ롣
.SH
POSIX.2Ƥ줿
.SH Х
POSIX.2Ϥޤǧ줿ɸˤϤʤäƤʤΤǡ
Υޥ˥奢ƤѹǤ
.SH Ϣ
.BR sh (1),
.BR exec (3),
.BR system (3)
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