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.\" Hey Emacs! This file is -*- nroff -*- source.
.\"
.\" Copyright (C) 1997 Andries Brouwer (aeb@cwi.nl)
.\"
.\" 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.\" manual page may be incorrect or out-of-date.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.
.\"
.\" Modified, 2003-05-26, Michael Kerrisk, <mtk.manpages@gmail.com>
.\"
.\" Japanese Version Copyright (c) 1997 HANATAKA Shinya
.\" all rights reserved.
.\" Translated 1997-08-30, HANATAKA Shinya <hanataka@abyss.rim.or.jp>
.\" Updated & Modified 2004-05-22, Yuichi SATO <ysato444@yahoo.co.jp>
.\" Updated & Modified 2005-01-04, Yuichi SATO
.\" Updated & Modified 2005-09-03, Akihiro MOTOKI <amotoki@dd.iij4u.or.jp>
.\" Updated & Modified 2005-11-04, Akihiro MOTOKI <amotoki@dd.iij4u.or.jp>
.\"
.\"WORD: effective user ID ¸桼ID
.\"WORD: real user ID ¥桼ID
.\"WORD: saved set-user-ID ¸åȥ桼ID
.\"WORD: effective group ID ¸롼ID
.\"WORD: real group ID ¥롼ID
.\"WORD: saved group ID ¸롼ID
.\"
.TH SETRESUID 2 2007-07-26 "Linux" "Linux Programmer's Manual"
.SH ̾
setresuid, setresgid \- 桼䥰롼פ ¡¸¸ ID ꤹ
.SH
.B #define _GNU_SOURCE
.br
.B #include <unistd.h>
.sp
.BI "int setresuid(uid_t " ruid ", uid_t " euid ", uid_t " suid );
.br
.BI "int setresgid(gid_t " rgid ", gid_t " egid ", gid_t " sgid );
.SH
.BR setresuid ()
ϸƤӽФΥץμ (real) 桼ID¸ (effective) 桼ID
¸ set-user-ID ꤹ롣
ø桼Υץϡμ UID¸ UID¸ set-user-ID
ߤμ UIDߤμ¸ UIDߤ¸ set-user-ID
Τɤ줫ѹ뤳ȤǤ:
øץ (Linux Ǥ \fBCAP_SETUID\fP ѥӥƥ (capability)
ץ) ϡ UID¸ UID¸ set-user-ID ǤդͤǤ롣
ѥΤɤ줫 \-1 ξϤͤѹ줺˻Ĥ롣
UID¸ UID¸ set-user-ID ˤɤѹԤ줿˴ؤ餺
ե륷ƥ UID Ͼ˼¸ UID (ǽǤѹο¸ UID)
Ʊͤꤵ롣
Ʊ褦ˡ
.BR setresgid ()
ϸƤӽФΥץμ GID¸ GID¸ set-group-ID ꤹ
(˥ե륷ƥ GID ¸ GID Ʊͤ˽)
øץƱͤ¤롣
.SH ֤
0 ֤롣顼ξ \-1 ֤졢
.I errno
Ŭڤꤵ롣
.SH 顼
.TP
.B EAGAIN
.I uid
ߤΥ桼 ID Ȱ㤦ͤǡ
θƤӽФˤ 桼 ID
.B RLIMIT_NPROC
ĶƤޤ
.TP
.B EPERM
ƤӽФץøʤΤ
(\fBCAP_SETUID\fP ѥӥƥʤΤ)
ID Ƥʤͤѹ褦Ȥ
.SH С
Linux ǤϥС 2.1.44 Ѳǽˤʤä
.SH
ΥɸǤ롣
HP-UX BSD ϤΤĤˤ¸ߤ롣
.SH
HP-UX FreeBSD Ǥ
.I <unistd.h>
˥ץȥפ¸ߤ롣
Linux Ǥϡglibc 2.3.2 ʹߤ
ץȥפƤ롣
.SH Ϣ
.BR getresuid (2),
.BR getuid (2),
.BR setfsuid (2),
.BR setfsgid (2),
.BR setreuid (2),
.BR setuid (2),
.BR capabilities (7),
.BR credentials (7),
.BR feature_test_macros (7)
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