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 (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
23 */
24
25 /*
26 * svc-auditset - auditset transient service (AUDITSET_FMRI) startup method;
27 * sets non-/attributable mask in the kernel context.
28 */
29
30 #include <audit_scf.h>
31 #include <bsm/adt.h>
32 #include <bsm/libbsm.h>
33 #include <zone.h>
34 #include <errno.h>
35 #include <locale.h>
36 #include <stdio.h>
37
38 #if !defined(SMF_EXIT_ERR_OTHER)
39 #define SMF_EXIT_ERR_OTHER 1
40 #endif
41
42 /*
43 * update_kcontext() - updates the non-/attributable preselection masks in
44 * the kernel context. Returns B_TRUE on success, B_FALSE otherwise.
45 */
46 boolean_t
update_kcontext(int cmd,char * cmask)47 update_kcontext(int cmd, char *cmask)
48 {
49 au_mask_t bmask;
50
51 (void) getauditflagsbin(cmask, &bmask);
52 if (auditon(cmd, (caddr_t)&bmask, sizeof (bmask)) == -1) {
53 (void) printf("Could not update kernel context (%s).\n",
54 cmd == A_SETAMASK ? "A_SETAMASK" : "A_SETKMASK");
55 return (B_FALSE);
56 }
57
58 #ifdef DEBUG
59 (void) printf("svc-auditset: %s mask set to %s",
60 cmd == A_SETAMASK ? "Attributable" : "Non-Attributable", cmask);
61 #endif
62
63 return (B_TRUE);
64 }
65
66 int
main(void)67 main(void)
68 {
69 char *auditset_fmri;
70 char *mask_cfg;
71 uint32_t policy;
72
73 (void) setlocale(LC_ALL, "");
74 (void) textdomain(TEXT_DOMAIN);
75
76 /* allow execution only inside the SMF facility */
77 if ((auditset_fmri = getenv("SMF_FMRI")) == NULL ||
78 strcmp(auditset_fmri, AUDITSET_FMRI) != 0) {
79 (void) printf(gettext("svc-auditset can be executed only "
80 "inside the SMF facility.\n"));
81 return (SMF_EXIT_ERR_NOSMF);
82 }
83
84 /* check the c2audit module state */
85 if (adt_audit_state(AUC_DISABLED)) {
86 #ifdef DEBUG
87 if (errno == ENOTSUP) {
88 (void) printf("c2audit module is excluded from "
89 "the system(4); kernel won't be updated.\n");
90 } else {
91 (void) printf("%s\n", strerror(errno));
92 }
93 #endif
94 return (SMF_EXIT_OK);
95 }
96
97 /* check the audit policy */
98 if (auditon(A_GETPOLICY, (caddr_t)&policy, 0) == -1) {
99 (void) printf("Could not read audit policy: %s\n",
100 strerror(errno));
101 return (SMF_EXIT_ERR_OTHER);
102 }
103
104 if (!(policy & AUDIT_PERZONE) && (getzoneid() != GLOBAL_ZONEID))
105 return (SMF_EXIT_OK);
106
107 /* update attributable mask */
108 if (!do_getflags_scf(&mask_cfg) || mask_cfg == NULL) {
109 (void) printf("Could not get configured attributable audit "
110 "flags.\n");
111 return (SMF_EXIT_ERR_OTHER);
112 }
113 if (!update_kcontext(A_SETAMASK, mask_cfg)) {
114 free(mask_cfg);
115 return (SMF_EXIT_ERR_OTHER);
116 }
117 free(mask_cfg);
118
119 /* update non-attributable mask */
120 if (!do_getnaflags_scf(&mask_cfg) || mask_cfg == NULL) {
121 (void) printf("Could not get configured non-attributable "
122 "audit flags.\n");
123 return (SMF_EXIT_ERR_OTHER);
124 }
125 if (!update_kcontext(A_SETKMASK, mask_cfg)) {
126 free(mask_cfg);
127 return (SMF_EXIT_ERR_OTHER);
128 }
129 free(mask_cfg);
130
131 return (SMF_EXIT_OK);
132 }
133