Annotated edit history of
setegid(2) version 1, including all changes.
View license author blame.
Rev |
Author |
# |
Line |
1 |
perry |
1 |
SETEUID |
|
|
2 |
!!!SETEUID |
|
|
3 |
NAME |
|
|
4 |
SYNOPSIS |
|
|
5 |
DESCRIPTION |
|
|
6 |
RETURN VALUE |
|
|
7 |
ERRORS |
|
|
8 |
NOTES |
|
|
9 |
CONFORMING TO |
|
|
10 |
SEE ALSO |
|
|
11 |
---- |
|
|
12 |
!!NAME |
|
|
13 |
|
|
|
14 |
|
|
|
15 |
seteuid, setegid - set effective user or group ID |
|
|
16 |
!!SYNOPSIS |
|
|
17 |
|
|
|
18 |
|
|
|
19 |
__#include __ |
|
|
20 |
#include __ |
|
|
21 |
|
|
|
22 |
|
|
|
23 |
__int seteuid(uid_t__ ''euid''__); |
|
|
24 |
int setegid(gid_t__ ''egid''__);__ |
|
|
25 |
!!DESCRIPTION |
|
|
26 |
|
|
|
27 |
|
|
|
28 |
__seteuid__ sets the effective user ID of the current |
|
|
29 |
process. Unprivileged user processes may only set the |
|
|
30 |
effective user ID to the real user ID, the effective user ID |
|
|
31 |
or the saved user ID. |
|
|
32 |
|
|
|
33 |
|
|
|
34 |
Precisely the same holds for __setegid__ with |
|
|
35 |
__ |
|
|
36 |
!!RETURN VALUE |
|
|
37 |
|
|
|
38 |
|
|
|
39 |
On success, zero is returned. On error, -1 is returned, and |
|
|
40 |
''errno'' is set appropriately. |
|
|
41 |
!!ERRORS |
|
|
42 |
|
|
|
43 |
|
|
|
44 |
__EPERM__ |
|
|
45 |
|
|
|
46 |
|
|
|
47 |
The current process is not the super-user and ''euid'' |
|
|
48 |
(resp. ''egid'') is not the real user (group) ID, the |
|
|
49 |
effective user (group) ID or the saved user (group) |
|
|
50 |
ID. |
|
|
51 |
!!NOTES |
|
|
52 |
|
|
|
53 |
|
|
|
54 |
Setting the effective user (group) ID to the saved user |
|
|
55 |
(group) ID is possible since Linux 1.1.37 (1.1.38). On an |
|
|
56 |
arbitrary system one should check |
|
|
57 |
_POSIX_SAVED_IDS. |
|
|
58 |
|
|
|
59 |
|
|
|
60 |
Under libc4, libc5 and glibc2.0 |
|
|
61 |
__seteuid(__''euid''__)__ is equivalent to |
|
|
62 |
__setreuid(-1,__ ''euid''__)__ and hence may change |
|
|
63 |
the saved user ID. Under glibc2.1 it is equivalent to |
|
|
64 |
__setresuid(-1,__ ''euid''__,-1)__ and hence does |
|
|
65 |
not change the saved user ID. Similar remarks hold for |
|
|
66 |
__setegid__. |
|
|
67 |
!!CONFORMING TO |
|
|
68 |
|
|
|
69 |
|
|
|
70 |
BSD 4.3 |
|
|
71 |
!!SEE ALSO |
|
|
72 |
|
|
|
73 |
|
|
|
74 |
geteuid(2), setuid(2), setreuid(2), |
|
|
75 |
setresuid(2) |
|
|
76 |
---- |
This page is a man page (or other imported legacy content). We are unable to automatically determine the license status of this page.