Annotation of sys/compat/osf1/osf1_prot.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: osf1_prot.c,v 1.3 2007/03/15 10:22:30 art Exp $ */
2: /* $NetBSD: osf1_prot.c,v 1.2 1999/05/05 01:51:35 cgd Exp $ */
3:
4: /*
5: * Copyright (c) 1999 Christopher G. Demetriou. All rights reserved.
6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
15: * 3. All advertising materials mentioning features or use of this software
16: * must display the following acknowledgement:
17: * This product includes software developed by Christopher G. Demetriou
18: * for the NetBSD Project.
19: * 4. The name of the author may not be used to endorse or promote products
20: * derived from this software without specific prior written permission
21: *
22: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
26: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
31: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32: */
33:
34: /*
35: * Copyright (c) 1994, 1995 Carnegie-Mellon University.
36: * All rights reserved.
37: *
38: * Author: Chris G. Demetriou
39: *
40: * Permission to use, copy, modify and distribute this software and
41: * its documentation is hereby granted, provided that both the copyright
42: * notice and this permission notice appear in all copies of the
43: * software, derivative works or modified versions, and any portions
44: * thereof, and that both notices appear in supporting documentation.
45: *
46: * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
47: * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
48: * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
49: *
50: * Carnegie Mellon requests users of this software to return to
51: *
52: * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
53: * School of Computer Science
54: * Carnegie Mellon University
55: * Pittsburgh PA 15213-3890
56: *
57: * any improvements or extensions that they make and grant Carnegie the
58: * rights to redistribute these changes.
59: */
60:
61: #include <sys/param.h>
62: #include <sys/systm.h>
63: #include <sys/proc.h>
64: #include <sys/mount.h>
65: #include <sys/syscallargs.h>
66:
67: #include <compat/osf1/osf1.h>
68: #include <compat/osf1/osf1_syscallargs.h>
69: #include <compat/osf1/osf1_cvt.h>
70:
71: /*
72: * OSF/1 defines _POSIX_SAVED_IDS, which means that our normal
73: * setgid() won't work.
74: *
75: * If you change "uid" to "gid" in the discussion, below, about
76: * setuid(), you'll get a correct description of setgid().
77: */
78: int
79: osf1_sys_setgid(p, v, retval)
80: struct proc *p;
81: void *v;
82: register_t *retval;
83: {
84: struct osf1_sys_setgid_args *uap = v;
85: struct pcred *pc = p->p_cred;
86: gid_t gid = SCARG(uap, gid);
87: int error;
88:
89: if ((error = suser(p, 0)) != 0 &&
90: gid != pc->p_rgid && gid != pc->p_svgid)
91: return (error);
92:
93: pc->pc_ucred = crcopy(pc->pc_ucred);
94: pc->pc_ucred->cr_gid = gid;
95: if (error == 0) {
96: pc->p_rgid = gid;
97: pc->p_svgid = gid;
98: }
99: atomic_setbits_int(&p->p_flag, P_SUGID);
100: return (0);
101: }
102:
103: /*
104: * OSF/1 defines _POSIX_SAVED_IDS, which means that our normal
105: * setuid() won't work.
106: *
107: * Instead, by P1003.1b-1993, setuid() is supposed to work like:
108: * If the process has appropriate [super-user] privileges, the
109: * setuid() function sets the real user ID, effective user
110: * ID, and the saved set-user-ID to uid.
111: * If the process does not have appropriate privileges, but uid
112: * is equal to the real user ID or the saved set-user-ID, the
113: * setuid() function sets the effective user ID to uid; the
114: * real user ID and saved set-user-ID remain unchanged by
115: * this function call.
116: */
117: int
118: osf1_sys_setuid(p, v, retval)
119: struct proc *p;
120: void *v;
121: register_t *retval;
122: {
123: struct osf1_sys_setuid_args *uap = v;
124: struct pcred *pc = p->p_cred;
125: uid_t uid = SCARG(uap, uid);
126: int error;
127:
128: if ((error = suser(p, 0)) != 0 &&
129: uid != pc->p_ruid && uid != pc->p_svuid)
130: return (error);
131:
132: pc->pc_ucred = crcopy(pc->pc_ucred);
133: pc->pc_ucred->cr_uid = uid;
134: if (error == 0) {
135: (void)chgproccnt(pc->p_ruid, -1);
136: (void)chgproccnt(uid, 1);
137: pc->p_ruid = uid;
138: pc->p_svuid = uid;
139: }
140: atomic_setbits_int(&p->p_flag, P_SUGID);
141: return (0);
142: }
CVSweb
![[BACK]](/icons/back.gif){kind=icon}
Return to osf1_prot.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / sys / compat / osf1