.\" Hey Emacs! This file is -*- nroff -*- source.
.\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk)
.\"
.\" 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.\" manual page may be incorrect or out-of-date.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.
.\"
.\" References consulted:
.\"     Linux libc source code
.\"     Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991)
.\"     386BSD man pages
.\"
.\" Modified 1993-07-24 by Rik Faith (faith@cs.unc.edu)
.\" Modified 2003-11-15 by aeb
.\"
.\" Japanese Version Copyright (c) 1997 HIROFUMI Nishizuka
.\"	all rights reserved.
.\" Translated 1997-12-19, HIROFUMI Nishizuka <nishi@rpts.cl.nec.co.jp>
.\" Updated & Modefied 1999-02-26, Shouichi Saito
.\" Updated & Modified 2004-06-05, Yuichi SATO <ysato444@yahoo.co.jp>
.\" Updated & Modified 2005-09-06, Akihiro MOTOKI <amotoki@dd.iij4u.or.jp>
.\" Updated 2008-12-24, Akihiro MOTOKI, LDP v3.14
.\"
.TH GETGRNAM 3 2009-03-30 "" "Linux Programmer's Manual"
.SH ̾
getgrnam, getgrnam_r, getgrgid, getgrgid_r \- 롼ץե륨ȥμФ
.SH 
.nf
.B #include <sys/types.h>
.B #include <grp.h>
.sp
.BI "struct group *getgrnam(const char *" name );
.sp
.BI "struct group *getgrgid(gid_t " gid );
.sp
.BI "int getgrnam_r(const char *" name ", struct group *" grp ,
.br
.BI "          char *" buf ", size_t " buflen ", struct group **" result );
.sp
.BI "int getgrgid_r(gid_t " gid ", struct group *" grp ,
.br
.BI "          char *" buf ", size_t " buflen ", struct group **" result );
.fi
.sp
.in -4n
glibc εǽޥ׷
.RB ( feature_test_macros (7)
):
.ad l
.in
.sp
.BR getgrnam_r (),
.BR getgrgid_r ():
_POSIX_C_SOURCE\ >=\ 1 || _XOPEN_SOURCE || _BSD_SOURCE ||
_SVID_SOURCE || _POSIX_SOURCE
.ad b
.SH 
.BR getgrnam ()
ؿϡ롼̾
.I name
˥ޥå륰롼סǡ١Υȥ
ʬ򤷡ǤǼ¤ΤؤΥݥ󥿤֤
(ѥɡǡ١:
Υ롼ץե
.IR /etc/group ,
NIS, LDAP)
.PP
.BR getgrgid ()
ؿϡ롼 ID
.I uid
˥ޥå륰롼סǡ١Υȥ
ʬ򤷡ǤǼ¤ΤؤΥݥ󥿤֤
.PP
.BR getgrnam_r ()

.BR getgrgid_r ()
ؿ (嵭δؿ) Ʊ뤬

.I group
¤Τ
.I grp
ؤΰ˳Ǽ롣

.I group
¤ΤˤʸؤΥݥ󥿤ޤޤ졢
ʸϥ
.I buflen
ΥХåե
.I buf
˳Ǽ롣

.I *gbufp
ˤϷ̤ؤΥݥ󥿤Ǽ롣
ȥ꤬Ĥʤä䥨顼ȯˤ
.I *result
ˤ NULL 롣
.PP
\fIgroup\fP ¤Τϡ\fI<grp.h>\fP ǰʲΤ褦Ƥ:
.sp
.in +4n
.nf
struct group {
    char   *gr_name;       /* 롼̾ */
    char   *gr_passwd;     /* 롼פΥХ */
    gid_t   gr_gid;        /* 롼 ID */
    char  **gr_mem;        /* 롼פΥ */
};
.fi
.in
.PP
.I buf
˺ɬפʥϡ
.BR sysconf (3)
˰
.B _SC_GETGR_R_SIZE_MAX
ꤷƼ¹Ԥ뤳Ȥʬ롣
.SH ֤
.BR getgrnam ()

.BR getgrgid ()
ؿϡ
.I group
¤ΤؤΥݥ󥿤֤
ޥå륨ȥ꤬Ĥʤä䡢
顼ȯ NULL ֤
顼ä硢
.I errno
Ŭڤꤵ롣
ƤӽФθ
.I errno
åϡ
ƤӽФ (ͤ) 0 ꤷƤ٤Ǥ롣
.LP
֤ͤŪΰؤƤꡢθ
.BR getgrent (3),
.BR getgrgid (),
.BR getgrnam ()
θƤӽФǾ񤭤뤫⤷ʤ
(֤줿ݥ󥿤
.BR free (3)
Ϥʤȡ)
.LP
ȡ
.BR getgrnam_r ()

.BR getgrgid_r ()
 0 ֤
.I *result

.I grp
ꤹ롣
ޥå륰롼סȥ꤬Ĥʤäˤϡ
0 ֤
.I *result
 NULL ꤹ롣
顼ξ硢顼ֹ֤
.I *result
 NULL ꤹ롣
.SH 顼
.TP
.BR 0 " ޤ " ENOENT " ޤ " ESRCH " ޤ " EBADF " ޤ " EPERM " ޤ ... "
ꤵ줿
.I name
ޤ
.I gid
Ĥʤä
.TP
.B EINTR
ʥ뤬å줿
.TP
.B EIO
I/O 顼
.TP
.B EMFILE
ƤӽФץˤơ
˺
.RB ( OPEN_MAX )
Υե뤬ץ󤵤Ƥ롣
.TP
.B ENFILE
ƥǴ˺Υե뤬ץ󤵤Ƥ롣
.TP
.B ENOMEM
.\" POSIX ˤϤʤ
.I group
¤ΤƤ뤿Υ꤬Խʬ
.\" 롼׾¤ΤƤ뤿ᡢޤϥХåեƤ뤿
.TP
.B ERANGE
Ϳ줿Хåե֤ԽʬǤ롣
.SH ե
.TP
.I /etc/group
Υ롼סǡ١ե
.SH 
SVr4, 4.3BSD, POSIX.1-2001.
.SH 
嵭Ρ֤͡װʲεҤ POSIX.1-2001 ˵롣
ɸϡ(ȥ꤬) Ĥʤȡפ򥨥顼ȤƤʤΤǡ
Τ褦ʾ
.I errno
ɤΤ褦ͤˤʤ뤫Ƥʤ
Τᡢ顼ǧ뤳ȤԲǽǤ롣
POSIX ˽򤷤ơȥ꤬Ĥʤ
.I errno
ѹʤ褦ˤ٤Ǥ롢ȼĥͤ⤤뤫⤷ʤ
͡ Unix ϤΥƥǻƤߤȡΤ褦ʾˤ
0, ENOENT, EBADF, ESRCH, EWOULDBLOCK, EPERM Ȥä֤ͤ͡롣
¾֤ͤ뤫⤷ʤ
.\" Τˤ:
.\" AIX 5.1  ESRCH ֤
.\" OSF1 4.0g  EWOULDBLOCK ֤
.\" libc, glibc (С 2.6 ޤ), Irix 6.5  ENOENT ֤
.\" glibc (С 2.7 ʹ)  0 ֤
.\" FreeBSD 4.8, OpenBSD 3.2, NetBSD 1.6  EPERM ֤
.\" SunOS 5.8  EBADF ֤
.\" Tru64 5.1b, HP-UX-11i, SunOS 5.7  0 ֤
.SH Ϣ
.BR endgrent (3),
.BR fgetgrent (3),
.BR getgrent (3),
.BR getpwnam (3),
.BR setgrent (3),
.BR group (5)