1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
|
.\" Copyright (C), 1994, Graeme W. Wilford. (Wilf.)
.\"
.\" 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.\" manual page may be incorrect or out-of-date.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.
.\"
.\" Fri Jul 29th 12:56:44 BST 1994 Wilf. <G.Wilford@ee.surrey.ac.uk>
.\" Modified Fri Jan 31 17:06:56 1997 by Eric S. Raymond <esr@thyrsus.com>
.\"
.\" Japanese Version Copyright (c) 1997 HANATAKA Shinya
.\" all rights reserved.
.\" Translated Sat Mar 1 16:31:56 JST 1997
.\" by HANATAKA Shinya <hanataka@abyss.rim.or.jp>
.\"
.\"WORD: identity
.\"WORD: effective group ID ¸롼ID
.\"WORD: real group ID ¥롼ID
.\"WORD: saved set-group-ID ¸åȥ롼ID
.\"WORD: implement
.\"WORD: root 롼
.\"WORD: super-user ѡ桼
.\"
.TH SETGID 2 "29 July 1994" "Linux 1.1.36" "Linux Programmer's Manual"
.SH ̾
setgid \- 롼(identity)ꤹ
.SH
.B #include <unistd.h>
.sp
.BI "int setgid(gid_t " gid )
.SH
.B setgid
ϸߤΥץμ¸(effective)롼ID ꤹ롣
⤷ѡ桼ˤäƸƤӽФ줿ϡ
(real)롼ID ¸(saved)롼ID ꤵ롣
Linux ˤơ
.B setgid
_POSIX_SAVED_IDS ä POSIX ǤΤ褦˼Ƥ롣
(롼Ȱʳ) setgid ץˤΥ롼פø
ȤøɬפʤŻμ¸롼ID
ˡǺƤ᤹Ȥ
桼롼(root)ޤϥץब setgid 롼ȤʤС
̤դʧ롣
.B setgid
ؿϸƤӽФԤμ¸롼ID å줬ѡ桼ʤС
ץ˴ϢƤ 롼ID
.IR gid
ꤹ롣
줬Ԥʤ줿ˤϥץबƤӥ롼Ȥø뤳ȤϤǤʤ
Τ褦ˡsetgid-root ץϰŪ˥롼øȤ
롼ȡ롼פǤʤ褦˿ȤǤ줫
.BR setgid
ȤäƺƤӥ롼ø뤳ȤǤʤ褦ˤ롣
(POSIXǤʤBSD)
.BR setegid
ǹԤʤȤǤ롣
.SH ֤
ϥ֤롣顼ξ \-1 ֤졢
.I errno
Ŭڤꤵ롣
.SH 顼
.TP
.B EPERM
桼ѡ桼(super-user)Ǥʤ
.I gid
ƤӽФץμ¸롼ID ޤ¸åȥ롼ID Ȱפʤ
.SH
SVr4, SVID.
.SH Ϣ
.BR getgid (2),
.BR setregid (2),
.BR setegid (2)
|
