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 #include "libproc.h"
28 #include <alloca.h>
29 #include <string.h>
30
31 /*
32 * Convenience wrapper to set the cred attributes of a victim process
33 * to a set of new values. Caller must supply a prochandle and a
34 * fully populated prcred structure.
35 */
36 int
Psetcred(struct ps_prochandle * Pr,const prcred_t * credp)37 Psetcred(struct ps_prochandle *Pr, const prcred_t *credp)
38 {
39 int ngrp;
40 int ctlsize;
41 struct {
42 long cmd;
43 prcred_t cred;
44 } *ctlp;
45
46 if (Pr == NULL || credp == NULL)
47 return (-1);
48
49 ngrp = credp->pr_ngroups;
50 ctlsize = sizeof (prcred_t) + (ngrp - 1) * sizeof (gid_t);
51 ctlp = alloca(ctlsize + sizeof (long));
52
53 ctlp->cmd = PCSCREDX;
54 (void) memcpy(&ctlp->cred, credp, ctlsize);
55
56 if (write(Pctlfd(Pr), ctlp, sizeof (long) + ctlsize) < 0)
57 return (-1);
58
59 return (0);
60 }
61
62 /*
63 * Convenience wrapper to set the zoneid attribute of a victim process to a new
64 * value (only to and from GLOBAL_ZONEID makes sense). Caller must supply a
65 * prochandle and a valid zoneid.
66 */
67 int
Psetzoneid(struct ps_prochandle * Pr,zoneid_t zoneid)68 Psetzoneid(struct ps_prochandle *Pr, zoneid_t zoneid)
69 {
70 struct {
71 long cmd;
72 long zoneid;
73 } ctl;
74
75 if (Pr == NULL)
76 return (-1);
77
78 ctl.zoneid = zoneid;
79 ctl.cmd = PCSZONE;
80
81 if (write(Pctlfd(Pr), &ctl, sizeof (ctl)) < 0)
82 return (-1);
83 return (0);
84 }
85