1*7c478bd9Sstevel@tonic-gate /*
2*7c478bd9Sstevel@tonic-gate * CDDL HEADER START
3*7c478bd9Sstevel@tonic-gate *
4*7c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*7c478bd9Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
6*7c478bd9Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
7*7c478bd9Sstevel@tonic-gate * with the License.
8*7c478bd9Sstevel@tonic-gate *
9*7c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*7c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
11*7c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions
12*7c478bd9Sstevel@tonic-gate * and limitations under the License.
13*7c478bd9Sstevel@tonic-gate *
14*7c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
15*7c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*7c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
17*7c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
18*7c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
19*7c478bd9Sstevel@tonic-gate *
20*7c478bd9Sstevel@tonic-gate * CDDL HEADER END
21*7c478bd9Sstevel@tonic-gate */
22*7c478bd9Sstevel@tonic-gate /*
23*7c478bd9Sstevel@tonic-gate * Copyright 2005 Sun Microsystems, Inc. All rights reserved.
24*7c478bd9Sstevel@tonic-gate * Use is subject to license terms.
25*7c478bd9Sstevel@tonic-gate */
26*7c478bd9Sstevel@tonic-gate
27*7c478bd9Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI"
28*7c478bd9Sstevel@tonic-gate
29*7c478bd9Sstevel@tonic-gate #include <assert.h>
30*7c478bd9Sstevel@tonic-gate #include <door.h>
31*7c478bd9Sstevel@tonic-gate #include <errno.h>
32*7c478bd9Sstevel@tonic-gate #include <fcntl.h>
33*7c478bd9Sstevel@tonic-gate #include <pthread.h>
34*7c478bd9Sstevel@tonic-gate #include <signal.h>
35*7c478bd9Sstevel@tonic-gate #include <stdio.h>
36*7c478bd9Sstevel@tonic-gate #include <stdlib.h>
37*7c478bd9Sstevel@tonic-gate #include <sys/stat.h>
38*7c478bd9Sstevel@tonic-gate #include <unistd.h>
39*7c478bd9Sstevel@tonic-gate #include <ucred.h>
40*7c478bd9Sstevel@tonic-gate
41*7c478bd9Sstevel@tonic-gate #include "repcache_protocol.h"
42*7c478bd9Sstevel@tonic-gate #include "configd.h"
43*7c478bd9Sstevel@tonic-gate
44*7c478bd9Sstevel@tonic-gate #define INVALID_RESULT ((uint32_t)-1U)
45*7c478bd9Sstevel@tonic-gate
46*7c478bd9Sstevel@tonic-gate static int main_door_fd = -1;
47*7c478bd9Sstevel@tonic-gate
48*7c478bd9Sstevel@tonic-gate /*ARGSUSED*/
49*7c478bd9Sstevel@tonic-gate static void
main_switcher(void * cookie,char * argp,size_t arg_size,door_desc_t * desc,uint_t n_desc)50*7c478bd9Sstevel@tonic-gate main_switcher(void *cookie, char *argp, size_t arg_size, door_desc_t *desc,
51*7c478bd9Sstevel@tonic-gate uint_t n_desc)
52*7c478bd9Sstevel@tonic-gate {
53*7c478bd9Sstevel@tonic-gate repository_door_request_t *request;
54*7c478bd9Sstevel@tonic-gate repository_door_response_t reply;
55*7c478bd9Sstevel@tonic-gate door_desc_t reply_desc;
56*7c478bd9Sstevel@tonic-gate
57*7c478bd9Sstevel@tonic-gate thread_info_t *ti = thread_self();
58*7c478bd9Sstevel@tonic-gate
59*7c478bd9Sstevel@tonic-gate int send_desc = 0;
60*7c478bd9Sstevel@tonic-gate int fd;
61*7c478bd9Sstevel@tonic-gate
62*7c478bd9Sstevel@tonic-gate thread_newstate(ti, TI_MAIN_DOOR_CALL);
63*7c478bd9Sstevel@tonic-gate ti->ti_main_door_request = (void *)argp;
64*7c478bd9Sstevel@tonic-gate
65*7c478bd9Sstevel@tonic-gate assert(cookie == REPOSITORY_DOOR_COOKIE);
66*7c478bd9Sstevel@tonic-gate
67*7c478bd9Sstevel@tonic-gate reply.rdr_status = INVALID_RESULT;
68*7c478bd9Sstevel@tonic-gate
69*7c478bd9Sstevel@tonic-gate if (argp == DOOR_UNREF_DATA) {
70*7c478bd9Sstevel@tonic-gate backend_fini();
71*7c478bd9Sstevel@tonic-gate
72*7c478bd9Sstevel@tonic-gate exit(CONFIGD_EXIT_LOST_MAIN_DOOR);
73*7c478bd9Sstevel@tonic-gate }
74*7c478bd9Sstevel@tonic-gate
75*7c478bd9Sstevel@tonic-gate /*
76*7c478bd9Sstevel@tonic-gate * No file descriptors allowed
77*7c478bd9Sstevel@tonic-gate */
78*7c478bd9Sstevel@tonic-gate assert(n_desc == 0);
79*7c478bd9Sstevel@tonic-gate
80*7c478bd9Sstevel@tonic-gate /*
81*7c478bd9Sstevel@tonic-gate * first, we just check the version
82*7c478bd9Sstevel@tonic-gate */
83*7c478bd9Sstevel@tonic-gate if (arg_size < offsetofend(repository_door_request_t, rdr_version)) {
84*7c478bd9Sstevel@tonic-gate reply.rdr_status = REPOSITORY_DOOR_FAIL_BAD_REQUEST;
85*7c478bd9Sstevel@tonic-gate goto fail;
86*7c478bd9Sstevel@tonic-gate }
87*7c478bd9Sstevel@tonic-gate
88*7c478bd9Sstevel@tonic-gate /* LINTED alignment */
89*7c478bd9Sstevel@tonic-gate request = (repository_door_request_t *)argp;
90*7c478bd9Sstevel@tonic-gate ti->ti_main_door_request = request;
91*7c478bd9Sstevel@tonic-gate
92*7c478bd9Sstevel@tonic-gate if (request->rdr_version != REPOSITORY_DOOR_VERSION) {
93*7c478bd9Sstevel@tonic-gate reply.rdr_status = REPOSITORY_DOOR_FAIL_VERSION_MISMATCH;
94*7c478bd9Sstevel@tonic-gate goto fail;
95*7c478bd9Sstevel@tonic-gate }
96*7c478bd9Sstevel@tonic-gate
97*7c478bd9Sstevel@tonic-gate /*
98*7c478bd9Sstevel@tonic-gate * Now, check that the argument is of the minimum required size
99*7c478bd9Sstevel@tonic-gate */
100*7c478bd9Sstevel@tonic-gate if (arg_size < offsetofend(repository_door_request_t, rdr_request)) {
101*7c478bd9Sstevel@tonic-gate reply.rdr_status = REPOSITORY_DOOR_FAIL_BAD_REQUEST;
102*7c478bd9Sstevel@tonic-gate goto fail;
103*7c478bd9Sstevel@tonic-gate }
104*7c478bd9Sstevel@tonic-gate
105*7c478bd9Sstevel@tonic-gate if (door_ucred(&ti->ti_ucred) != 0) {
106*7c478bd9Sstevel@tonic-gate reply.rdr_status = REPOSITORY_DOOR_FAIL_PERMISSION_DENIED;
107*7c478bd9Sstevel@tonic-gate goto fail;
108*7c478bd9Sstevel@tonic-gate }
109*7c478bd9Sstevel@tonic-gate
110*7c478bd9Sstevel@tonic-gate switch (request->rdr_request) {
111*7c478bd9Sstevel@tonic-gate case REPOSITORY_DOOR_REQUEST_CONNECT:
112*7c478bd9Sstevel@tonic-gate fd = -1;
113*7c478bd9Sstevel@tonic-gate reply.rdr_status = create_connection(ti->ti_ucred, request,
114*7c478bd9Sstevel@tonic-gate arg_size, &fd);
115*7c478bd9Sstevel@tonic-gate if (reply.rdr_status != REPOSITORY_DOOR_SUCCESS) {
116*7c478bd9Sstevel@tonic-gate assert(fd == -1);
117*7c478bd9Sstevel@tonic-gate goto fail;
118*7c478bd9Sstevel@tonic-gate }
119*7c478bd9Sstevel@tonic-gate assert(fd != -1);
120*7c478bd9Sstevel@tonic-gate reply_desc.d_attributes = DOOR_DESCRIPTOR | DOOR_RELEASE;
121*7c478bd9Sstevel@tonic-gate reply_desc.d_data.d_desc.d_descriptor = fd;
122*7c478bd9Sstevel@tonic-gate send_desc = 1;
123*7c478bd9Sstevel@tonic-gate break;
124*7c478bd9Sstevel@tonic-gate
125*7c478bd9Sstevel@tonic-gate default:
126*7c478bd9Sstevel@tonic-gate reply.rdr_status = REPOSITORY_DOOR_FAIL_BAD_REQUEST;
127*7c478bd9Sstevel@tonic-gate goto fail;
128*7c478bd9Sstevel@tonic-gate }
129*7c478bd9Sstevel@tonic-gate
130*7c478bd9Sstevel@tonic-gate fail:
131*7c478bd9Sstevel@tonic-gate assert(reply.rdr_status != INVALID_RESULT);
132*7c478bd9Sstevel@tonic-gate
133*7c478bd9Sstevel@tonic-gate thread_newstate(ti, TI_DOOR_RETURN);
134*7c478bd9Sstevel@tonic-gate ti->ti_main_door_request = NULL;
135*7c478bd9Sstevel@tonic-gate
136*7c478bd9Sstevel@tonic-gate (void) door_return((char *)&reply, sizeof (reply),
137*7c478bd9Sstevel@tonic-gate &reply_desc, (send_desc)? 1:0);
138*7c478bd9Sstevel@tonic-gate (void) door_return(NULL, 0, NULL, 0);
139*7c478bd9Sstevel@tonic-gate }
140*7c478bd9Sstevel@tonic-gate
141*7c478bd9Sstevel@tonic-gate int
setup_main_door(const char * doorpath)142*7c478bd9Sstevel@tonic-gate setup_main_door(const char *doorpath)
143*7c478bd9Sstevel@tonic-gate {
144*7c478bd9Sstevel@tonic-gate mode_t oldmask;
145*7c478bd9Sstevel@tonic-gate int fd;
146*7c478bd9Sstevel@tonic-gate
147*7c478bd9Sstevel@tonic-gate int door_flags = DOOR_UNREF | DOOR_REFUSE_DESC;
148*7c478bd9Sstevel@tonic-gate #ifdef DOOR_NO_CANCEL
149*7c478bd9Sstevel@tonic-gate door_flags |= DOOR_NO_CANCEL;
150*7c478bd9Sstevel@tonic-gate #endif
151*7c478bd9Sstevel@tonic-gate if ((main_door_fd = door_create(main_switcher, REPOSITORY_DOOR_COOKIE,
152*7c478bd9Sstevel@tonic-gate door_flags)) < 0) {
153*7c478bd9Sstevel@tonic-gate perror("door_create");
154*7c478bd9Sstevel@tonic-gate return (0);
155*7c478bd9Sstevel@tonic-gate }
156*7c478bd9Sstevel@tonic-gate
157*7c478bd9Sstevel@tonic-gate #ifdef DOOR_PARAM_DATA_MIN
158*7c478bd9Sstevel@tonic-gate if (door_setparam(main_door_fd, DOOR_PARAM_DATA_MIN,
159*7c478bd9Sstevel@tonic-gate offsetofend(repository_door_request_t, rdr_request)) == -1 ||
160*7c478bd9Sstevel@tonic-gate door_setparam(main_door_fd, DOOR_PARAM_DATA_MAX,
161*7c478bd9Sstevel@tonic-gate sizeof (repository_door_request_t)) == -1) {
162*7c478bd9Sstevel@tonic-gate perror("door_setparam");
163*7c478bd9Sstevel@tonic-gate return (0);
164*7c478bd9Sstevel@tonic-gate }
165*7c478bd9Sstevel@tonic-gate #endif /* DOOR_PARAM_DATA_MIN */
166*7c478bd9Sstevel@tonic-gate
167*7c478bd9Sstevel@tonic-gate /*
168*7c478bd9Sstevel@tonic-gate * Create the file if it doesn't exist. Ignore errors, since
169*7c478bd9Sstevel@tonic-gate * fattach(3C) will catch any real problems.
170*7c478bd9Sstevel@tonic-gate */
171*7c478bd9Sstevel@tonic-gate oldmask = umask(000); /* disable umask temporarily */
172*7c478bd9Sstevel@tonic-gate fd = open(doorpath, O_RDWR | O_CREAT | O_EXCL, 0644);
173*7c478bd9Sstevel@tonic-gate (void) umask(oldmask);
174*7c478bd9Sstevel@tonic-gate
175*7c478bd9Sstevel@tonic-gate if (fd >= 0)
176*7c478bd9Sstevel@tonic-gate (void) close(fd);
177*7c478bd9Sstevel@tonic-gate
178*7c478bd9Sstevel@tonic-gate if (fattach(main_door_fd, doorpath) < 0) {
179*7c478bd9Sstevel@tonic-gate if ((errno != EBUSY) ||
180*7c478bd9Sstevel@tonic-gate (fdetach(doorpath) < 0) ||
181*7c478bd9Sstevel@tonic-gate (fattach(main_door_fd, doorpath) < 0)) {
182*7c478bd9Sstevel@tonic-gate perror("fattach");
183*7c478bd9Sstevel@tonic-gate (void) door_revoke(main_door_fd);
184*7c478bd9Sstevel@tonic-gate main_door_fd = -1;
185*7c478bd9Sstevel@tonic-gate return (0);
186*7c478bd9Sstevel@tonic-gate }
187*7c478bd9Sstevel@tonic-gate }
188*7c478bd9Sstevel@tonic-gate
189*7c478bd9Sstevel@tonic-gate return (1);
190*7c478bd9Sstevel@tonic-gate }
191