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
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
|
/* $OpenBSD: osf1_prot.c,v 1.3 2007/03/15 10:22:30 art Exp $ */
/* $NetBSD: osf1_prot.c,v 1.2 1999/05/05 01:51:35 cgd Exp $ */
/*
* Copyright (c) 1999 Christopher G. Demetriou. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Christopher G. Demetriou
* for the NetBSD Project.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* Copyright (c) 1994, 1995 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Chris G. Demetriou
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/proc.h>
#include <sys/mount.h>
#include <sys/syscallargs.h>
#include <compat/osf1/osf1.h>
#include <compat/osf1/osf1_syscallargs.h>
#include <compat/osf1/osf1_cvt.h>
/*
* OSF/1 defines _POSIX_SAVED_IDS, which means that our normal
* setgid() won't work.
*
* If you change "uid" to "gid" in the discussion, below, about
* setuid(), you'll get a correct description of setgid().
*/
int
osf1_sys_setgid(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct osf1_sys_setgid_args *uap = v;
struct pcred *pc = p->p_cred;
gid_t gid = SCARG(uap, gid);
int error;
if ((error = suser(p, 0)) != 0 &&
gid != pc->p_rgid && gid != pc->p_svgid)
return (error);
pc->pc_ucred = crcopy(pc->pc_ucred);
pc->pc_ucred->cr_gid = gid;
if (error == 0) {
pc->p_rgid = gid;
pc->p_svgid = gid;
}
atomic_setbits_int(&p->p_flag, P_SUGID);
return (0);
}
/*
* OSF/1 defines _POSIX_SAVED_IDS, which means that our normal
* setuid() won't work.
*
* Instead, by P1003.1b-1993, setuid() is supposed to work like:
* If the process has appropriate [super-user] privileges, the
* setuid() function sets the real user ID, effective user
* ID, and the saved set-user-ID to uid.
* If the process does not have appropriate privileges, but uid
* is equal to the real user ID or the saved set-user-ID, the
* setuid() function sets the effective user ID to uid; the
* real user ID and saved set-user-ID remain unchanged by
* this function call.
*/
int
osf1_sys_setuid(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct osf1_sys_setuid_args *uap = v;
struct pcred *pc = p->p_cred;
uid_t uid = SCARG(uap, uid);
int error;
if ((error = suser(p, 0)) != 0 &&
uid != pc->p_ruid && uid != pc->p_svuid)
return (error);
pc->pc_ucred = crcopy(pc->pc_ucred);
pc->pc_ucred->cr_uid = uid;
if (error == 0) {
(void)chgproccnt(pc->p_ruid, -1);
(void)chgproccnt(uid, 1);
pc->p_ruid = uid;
pc->p_svuid = uid;
}
atomic_setbits_int(&p->p_flag, P_SUGID);
return (0);
}
|
