.\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk)
.\"
.\" Japanese Version Copyright (c) 1997 HIROFUMI Nishizuka
.\"	all rights reserved.
.\" Translated Thu Dec 18 16:16:57 JST 1997
.\"	by HIROFUMI Nishizuka <nishi@rpts.cl.nec.co.jp>
.\" Updated & Modified Sun Jun  6 05:04:00 JST 2004
.\"         by Yuichi SATO <ysato444@yahoo.co.jp>
.\"
.\" 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.\" manual page may be incorrect or out-of-date.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 1996-05-27 by Martin Schulze (joey@linux.de)
.\" Modified 2003-11-15 by aeb
.\"
.TH GETPWNAM 3  1996-05-27 "GNU" "Linux Programmer's Manual"
.SH ̾
getpwnam, getpwnam_r, getpwuid, getpwuid_r \- ѥɥեΥȥμФ
.SH 
.nf
.B #include <sys/types.h>
.B #include <pwd.h>
.sp
.BI "struct passwd *getpwnam(const char *" name );
.sp
.BI "struct passwd *getpwuid(uid_t " uid );
.sp
.BI "int getpwnam_r(const char *" name ", struct passwd *" pwbuf ,
.br
.BI "        char *" buf ", size_t " buflen ", struct passwd **" pwbufp );
.sp
.BI "int getpwuid_r(uid_t " uid ", struct passwd *" pwbuf ,
.br
.BI "        char *" buf ", size_t " buflen ", struct passwd **" pwbufp );
.fi
.SH 
.B getpwnam()
ؿϡ桼̾
.I name
˥ޥå
.I /etc/passwd
ιԤʬ򤷤եɤޤ๽¤ΤؤΥݥ󥿤֤
.PP
.B getpwuid()
ؿϡ桼 ID 
.I uid
˥ޥå
.I /etc/passwd
ιԤʬ򤷤եɤޤ๽¤ΤؤΥݥ󥿤֤
.PP
.B getpwnam_r()

.B getpwuid_r()
ؿ (嵭δؿ) Ʊ򸫤Ĥ뤬
 passwd ¤Τ
.I pwbuf
ؤΰ˳Ǽ롣
 passwd ¤ΤˤʸؤΥݥ󥿤ޤޤ졢
ʸϥ
.I buflen
ΥХåե
.I buf
˳Ǽ롣
() ̤ؤΥݥ󥿤
(ȥ꤬Ĥʤä硢ޤϥ顼ä) NULL ϡ
.RI * pwbufp
˳Ǽ롣
.PP
\fIpasswd\fP ¤Τϡ\fI<pwd.h>\fP ǰʲΤ褦Ƥ:
.sp
.RS
.nf
struct passwd {
      char    *pw_name;      /* 桼̾ */
      char    *pw_passwd;    /* 桼Υѥ */
      uid_t   pw_uid;        /* 桼 ID */
      gid_t   pw_gid;        /* 롼 ID */
      char    *pw_gecos;     /* ̾ */
      char    *pw_dir;       /* ۡǥ쥯ȥ */
      char    *pw_shell;     /* ץ */
};
.fi
.RE
.PP
.I buf
˺ɬפʥϡ
.BR sysconf (3)
˰ _SC_GETPW_R_SIZE_MAX ꤷƼ¹Ԥ뤳Ȥʬ롣
.SH ֤
\fBgetpwnam()\fP  \fBgetpwuid()\fP ؿϡ
passwd ¤ΤؤΥݥ󥿤֤
פ륨ȥ̵꤬顼ȯ NULL ֤
顼ä硢
.I errno
Ŭڤꤵ롣
ƤӽФθ
.I errno
åϡ
ƤӽФ (ͤ) 0 ꤷƤ٤Ǥ롣
.LP
֤ͤŪΰؤƤꡢθ
.BR getpwent() ,
.BR getpwnam() ,
.B getpwuid()
θƤӽФǾ񤭤뤫⤷ʤ
.LP
\fBgetpwnam_r()\fP  \fBgetpwuid_r()\fP ؿϡ
 0 ֤
顼ξϡ顼֤ͤ롣
.SH 顼
.TP
.BR 0 " ޤ " ENOENT " ޤ " ESRCH " ޤ " EBADF " ޤ " EPERM " ޤ ... "
ꤵ줿
.I name
ޤ
.I uid
Ĥʤä
.TP
.B EINTR
ʥ뤬å줿
.TP
.B EIO
I/O 顼
.TP
.B EMFILE
ƤӽФץˤơ
˺ (OPEN_MAX) Υե뤬ץ󤵤Ƥ롣
.TP
.B ENFILE
ƥǴ˺Υե뤬ץ󤵤Ƥ롣
.TP
.B ENOMEM
passwd ¤ΤƤ뤿Υ꤬Խʬ
.\" ι¤ΤŪǤꡢ0 ޤ 1 Ƥ롣
.\" ꡼̵(libc45)
.TP
.B ERANGE
Ϳ줿Хåե֤ԽʬǤ롣
.SH ե
.TP
.I /etc/passwd
ѥɥǡ١ե
.fi
.SH 
SVID 3, BSD 4.3, POSIX 1003.1-2003
.SH 
嵭Ρ֤͡װʲεҤ POSIX 1003.1-2001 ˵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, Irix 6.5  ENOENT ֤
.\" 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 endpwent (3),
.BR fgetpwent (3),
.BR getgrnam (3),
.BR getpw (3),
.BR getpwent (3),
.BR putpwent (3),
.BR setpwent (3),
.BR passwd (5)