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
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
|
.\" Copyright (C) 2001 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.\" manual page may be incorrect or out-of-date.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.
.\"
.\" [should really be seteuid.3]
.\" Modified, 27 May 2004, Michael Kerrisk <mtk.manpages@gmail.com>
.\" Added notes on capability requirements
.\"
.\" Japanese Version Copyright (c) 2001, 2005 Yuichi SATO
.\" all rights reserved.
.\" Translated Mon Jun 4 09:08:41 JST 2001
.\" by Yuichi SATO <ysato@h4.dion.ne.jp>
.\" Updated & Modified Tue Jan 4 05:51:25 JST 2005
.\" by Yuichi SATO <ysato444@yahoo.co.jp>
.\"
.\"WORD: effective user ID ¸桼 ID
.\"WORD: real user ID ¥桼 ID
.\"WORD: saved user ID ¸桼 ID
.\"WORD:
.\"
.TH SETEUID 2 2007-07-26 "Linux" "Linux Programmer's Manual"
.SH ̾
seteuid, setegid \- ¸桼 ID ¸롼 ID ꤹ
.SH
.B #include <sys/types.h>
.br
.B #include <unistd.h>
.sp
.BI "int seteuid(uid_t " euid );
.br
.BI "int setegid(gid_t " egid );
.sp
.in -4n
glibc εǽޥ
.RB ( feature_test_macros (7)
):
.in
.sp
.ad l
.BR seteuid (),
.BR setegid ():
_BSD_SOURCE || _POSIX_C_SOURCE\ >=\ 200112L || _XOPEN_SOURCE\ >=\ 600
.ad b
.SH
.BR seteuid ()
ϸƤӽФΥץμ¸桼 ID ꤹ롣
ø桼Υץϡ桼 ID
¥桼 ID¸桼 ID¸ set-user-ID ˤǤʤ
.BR setegid ()
Ǥ⡢֥桼פˡ֥롼ספФƱȤԤ롣
.\" When
.\" .I euid
.\" equals \-1, nothing is changed.
.\" (This is an artifact of the implementation in glibc of seteuid()
.\" using setresuid(2).)
.SH ֤
0 ֤롣
顼ξ \-1 ֤졢
.I errno
Ŭڤꤵ롣
.SH 顼
.\" .TP
.\" .B EINVAL
.TP
.B EPERM
ƤӽФΥץøʤ
(Linux Ǥ
.BR seteuid ()
ξ
.B CAP_SETUID
ѥӥƥ (capability) ʤ
.BR setegid ()
ξ
.B CAP_SETGID
ѥӥƥʤ)
.I euid
(ޤ
.IR egid )
¥桼 (롼) IDޤϼ¸桼 (롼) ID
ޤ¸ set-user-ID (¸ set-group-ID) ǤϤʤ
.SH
4.3BSD, POSIX.1-2001.
.SH
¸桼 (롼) ID ¸ set-user-ID (¸ set-group-ID)
ꤹ뤳ȤLinux 1.1.37 (1.1.38) ǽˤʤä
ƤΥƥǡ
.B _POSIX_SAVED_IDS
å٤Ǥ롣
.LP
libc4, libc5, glibc 2.0 Ǥ
.BI seteuid( euid )
.BI setreuid(\-1, " euid" )
ƱʤΤǡ¸ set-user-ID ѹ롣
glibc 2.1 Ǥ
.BI setresuid(\-1, " euid" ", \-1)"
ƱʤΤǡ¸ set-user-ID ѹʤ
Ʊͤ
.BR setegid ()
ˤ⤢롣
.SH Ϣ
.BR geteuid (2),
.BR setresuid (2),
.BR setreuid (2),
.BR setuid (2),
.BR capabilities (7),
.BR credentials (7)
|
