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 2008 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25
26 /*
27 * vscand door server
28 */
29
30 #include <door.h>
31 #include <errno.h>
32 #include <syslog.h>
33 #include <unistd.h>
34 #include <varargs.h>
35 #include <stdio.h>
36 #include <stdlib.h>
37 #include <string.h>
38 #include <synch.h>
39 #include <fcntl.h>
40 #include <sys/types.h>
41 #include <sys/stat.h>
42 #include <sys/param.h>
43 #include <pthread.h>
44 #include "vs_incl.h"
45
46 #define VS_DOOR_VERSION 1
47 static int vs_door_cookie;
48
49 /* function prototype */
50 static void vs_door_scan_req(void *, char *, size_t, door_desc_t *, uint_t);
51
52 /* local data */
53 static int vs_door_fd = -1;
54 static pthread_mutex_t vs_door_mutex = PTHREAD_MUTEX_INITIALIZER;
55
56
57 /*
58 * vs_door_init
59 *
60 * Start the vscand door service.
61 * Returns 0 on success. Otherwise, -1.
62 */
63 int
vs_door_init(void)64 vs_door_init(void)
65 {
66 (void) pthread_mutex_lock(&vs_door_mutex);
67
68 if ((vs_door_fd = door_create(vs_door_scan_req,
69 &vs_door_cookie, (DOOR_UNREF | DOOR_REFUSE_DESC))) < 0) {
70 syslog(LOG_ERR, "vscand: door create%s", strerror(errno));
71 vs_door_fd = -1;
72 }
73
74 (void) pthread_mutex_unlock(&vs_door_mutex);
75 return (vs_door_fd);
76 }
77
78
79 /*
80 * vscan_door_fini
81 *
82 * Stop the vscand door service.
83 */
84 void
vs_door_fini(void)85 vs_door_fini(void)
86 {
87 (void) pthread_mutex_lock(&vs_door_mutex);
88
89 if (vs_door_fd >= 0) {
90 if (door_revoke(vs_door_fd) < 0)
91 syslog(LOG_ERR, "vscand: door revoke %s",
92 strerror(errno));
93 }
94
95 vs_door_fd = -1;
96
97 (void) pthread_mutex_unlock(&vs_door_mutex);
98 }
99
100
101 /*
102 * vs_door_scan_req
103 *
104 * Invoke the vscand door service.
105 */
106 /* ARGSUSED */
107 static void
vs_door_scan_req(void * cookie,char * ptr,size_t size,door_desc_t * dp,uint_t n_desc)108 vs_door_scan_req(void *cookie, char *ptr, size_t size, door_desc_t *dp,
109 uint_t n_desc)
110 {
111 vs_scan_req_t *scan_req;
112 uint32_t result = VS_STATUS_ERROR;
113
114 if (ptr != NULL) {
115 /* LINTED E_BAD_PTR_CAST_ALIGN - to be fixed with encoding */
116 scan_req = (vs_scan_req_t *)ptr;
117 result = vs_svc_queue_scan_req(scan_req);
118 }
119
120 (void) door_return((char *)&result, sizeof (uint32_t), NULL, 0);
121 }
122