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.\" Copyright (c) 2003 Andries Brouwer (aeb@cwi.nl)
.\"
.\" 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.
.\"
.\" Japanese Version Copyright (c) 2004 Yuichi SATO
.\" all rights reserved.
.\" Translated Thu Jul 29 02:26:07 JST 2004
.\" by Yuichi SATO <ysato444@yahoo.co.jp>
.\"
.TH GETGRENT 3 2003-11-15 "GNU" "Linux Programmer's Manual"
.SH ̾
getgrent_r, fgetgrent_r \- 롼ץե륨ȥꥨȥ (reentrant) ˼Ф
.SH
.nf
.B "#define _GNU_SOURCE"
.br
.B #include <grp.h>
.sp
.BI "int getgrent_r(struct group *" gbuf ", char *" buf ,
.br
.BI " size_t " buflen ", struct group **" gbufp );
.sp
.BI "int fgetgrent_r(FILE *" fp ", struct group *" gbuf ", char *" buf ,
.br
.BI " size_t " buflen ", struct group **" gbufp );
.SH
ؿ
.B getgrent_r()
.B fgetgrent_r()
.BR getgrent (3)
.BR fgetgrent (3)
ΥꥨȥǤǤ롣
Ԥϡ
.BR setgrent (3)
ˤäƽ줿ȥफ顢Υ롼ץեΥȥɤ߹ࡣ
Ԥϡ
.I fp
ȤͿ줿ȥफ顢Υ롼ץեΥȥɤ߹ࡣ
.PP
\fIgroup\fP ¤Τ
.I <grp.h>
ˤưʲΤ褦Ƥ:
.sp
.RS
.nf
struct group {
char *gr_name; /* 롼̾ */
char *gr_passwd; /* 롼ץѥ */
gid_t gr_gid; /* 롼 ID */
char **gr_mem; /* 롼ץ */
};
.ta
.fi
.RE
.sp
ꥨȥȤǤʤؿŪʳǼΰؤΥݥ֤
ŪʳǼΰˤϡ˥롼̾ѥɡ
ФؤΥݥޤޤ롣
ƤꥨȥȤʴؿϡ
ƤӽФ¦Хåե˥롼̾ʤƤ֤
ǽΰȤ struct group ݻǤХåե
.I gbuf
롣
ˤ¾ʸݻǤ륵
.I buflen
ΥХåե
.I buf
롣
δؿη (ȥफɤ߹ޤ줿 struct group) ϡ
줿Хåե
.RI * gbuf
˳Ǽ졢 struct group ؤΥݥ
.RI * gbufp
֤롣
.SH ֤
硢δؿ 0 ֤
.RI * gbufp
struct group ؤΥݥȤʤ롣
顼ξ硢δؿϥ顼֤ͤ
.RI * gbufp
NULL ˤʤ롣
.SH 顼
.TP
.B ENOENT
Υȥ꤬ʤ
.TP
.B ERANGE
ʬʥХåե֤ͿƤʤ
ä礭ʥХåեǺټ¹Ԥ뤳ȡ
.SH
.nf
#define _GNU_SOURCE
#include <grp.h>
#include <stdio.h>
#define BUFLEN 4096
int main() {
struct group grp, *grpp;
char buf[BUFLEN];
int i;
setgrent();
while (1) {
i = getgrent_r(&grp, buf, BUFLEN, &grpp);
if (i)
break;
printf("%s (%d):", grpp->gr_name, grpp->gr_gid);
for (i = 0; ; i++) {
if (grpp->gr_mem[i] == NULL)
break;
printf(" %s", grpp->gr_mem[i]);
}
printf("\en");
}
endgrent();
return 0;
}
.fi
.\" ֤顼åɲäơstrerror_r Ȥ٤
.\" #include <errno.h>
.\" #include <stdlib.h>
.\" if (i) {
.\" if (i == ENOENT)
.\" break;
.\" printf("getgrent_r: %s", strerror(i));
.\" exit(1);
.\" }
.SH
δؿ GNU ĥǤꡢPOSIX Ǥδؿ
.BR getpwnam_r (3)
η˻Ƥ롣
¾ΥƥǤϥץȥ
.sp
.nf
.in +4
struct group *
getgrent_r(struct group *grp, char *buf, int buflen);
.in
.fi
.sp
ȤƤ롣
ɤΤǤϡ
.sp
.nf
.in +4
int
getgrent_r(struct group *grp, char *buf, int buflen,
FILE **gr_fp);
.in
.fi
.sp
ȤƤ롣
.SH
ؿ
.B getgrent_r()
ΥꥨȥȤǤϤʤ
ʤʤ顢ȥɤ߹֤߰
¾ƤΥåɤȶͭƤ뤿Ǥ롣
.SH Ϣ
.BR fgetgrent (3),
.BR getgrent (3),
.BR getgrgid (3),
.BR getgrnam (3),
.BR group (5)
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