1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 #pragma ident "%Z%%M% %I% %E% SMI"
28
29 #include "libproc.h"
30 #include <alloca.h>
31 #include <string.h>
32
33 /*
34 * Convenience wrapper to set the cred attributes of a victim process
35 * to a set of new values. Caller must supply a prochandle and a
36 * fully populated prcred structure.
37 */
38 int
Psetcred(struct ps_prochandle * Pr,const prcred_t * credp)39 Psetcred(struct ps_prochandle *Pr, const prcred_t *credp)
40 {
41 int ngrp;
42 int ctlsize;
43 struct {
44 long cmd;
45 prcred_t cred;
46 } *ctlp;
47
48 if (Pr == NULL || credp == NULL)
49 return (-1);
50
51 ngrp = credp->pr_ngroups;
52 ctlsize = sizeof (prcred_t) + (ngrp - 1) * sizeof (gid_t);
53 ctlp = alloca(ctlsize + sizeof (long));
54
55 ctlp->cmd = PCSCREDX;
56 (void) memcpy(&ctlp->cred, credp, ctlsize);
57
58 if (write(Pctlfd(Pr), ctlp, sizeof (long) + ctlsize) < 0)
59 return (-1);
60
61 return (0);
62 }
63
64 /*
65 * Convenience wrapper to set the zoneid attribute of a victim process to a new
66 * value (only to and from GLOBAL_ZONEID makes sense). Caller must supply a
67 * prochandle and a valid zoneid.
68 */
69 int
Psetzoneid(struct ps_prochandle * Pr,zoneid_t zoneid)70 Psetzoneid(struct ps_prochandle *Pr, zoneid_t zoneid)
71 {
72 struct {
73 long cmd;
74 long zoneid;
75 } ctl;
76
77 if (Pr == NULL)
78 return (-1);
79
80 ctl.zoneid = zoneid;
81 ctl.cmd = PCSZONE;
82
83 if (write(Pctlfd(Pr), &ctl, sizeof (ctl)) < 0)
84 return (-1);
85 return (0);
86 }
87