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.\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de)
.\" Distributed under GPL
.\" Thanks to glibc info pages
.\"
.\" Modified 2003-11-18, aeb: glibc is broken
.\"
.\" Japanese Version Copyright (c) 2004 Yuichi SATO
.\" all rights reserved.
.\" Translated Sat Aug 7 07:39:48 JST 2004
.\" by Yuichi SATO <ysato444@yahoo.co.jp>
.\"
.TH GETGROUPLIST 3 2003-11-18 "GNU" "Linux Programmer's Manual"
.SH ̾
getgrouplist \- 桼°륰롼פΥꥹ
.SH
.sp
.B #include <grp.h>
.sp
.BI "int getgrouplist (const char *" user ", gid_t " group ,
.in 25
.BI "gid_t *" groups ", int *" ngroups );
.SH
.B getgrouplist()
ؿ
.I user
°ƤΥ롼פ롼ץǡ١Ĵ٤롣
롼 ID
.RI * ngroups
ޤǤб륰롼פ
.I groups
˳Ǽ;
δؿ֤ͤϡºݤ˳Ǽ줿롼 ID οǤ롣
롼
.I group
.B getgroup\%list()
֤륰롼פΥꥹȤ˼ưŪ˴ޤ롣
.SH ֤
ĤäƤΥ롼פο
.RI * ngroups
硢
.B getgrouplist()
`-1' ֤
⡢Ԥ⡢ºݤΥ롼פο
.RI * ngroups
˳Ǽ롣
.SH Х
δؿ glibc 2.3.2 Ǥμϴְ㤨Ƥ:
ºݤΥ롼פο
.RI * ngroups
礭硢Ƥޤ
.SH
δؿ glibc 2.2.4 ¸ߤ롣
.SH
.nf
/* glibc 2.3.2 Ǥϥå夹롣*/
#include <stdio.h>
#include <stdlib.h>
#include <grp.h>
#include <pwd.h>
int main() {
int i, ng = 0;
char *user = "who"; /* 桼̾˽*/
gid_t *groups = NULL;
struct passwd *pw = getpwnam(user);
if (pw == NULL)
return 0;
if (getgrouplist(user, pw->pw_gid, NULL, &ng) < 0) {
groups = (gid_t *) malloc(ng * sizeof (gid_t));
getgrouplist(user, pw->pw_gid, groups, &ng);
}
for(i = 0; i < ng; i++)
printf("%d\en", groups[i]);
return 0;
}
.fi
.SH Ϣ
.BR getgroups (3),
.BR setgroups (3)
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