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.
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.
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]
22 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
25 * Copyright 2018 Joyent, Inc.
31 #include "nscd_switch.h"
33 #include "nscd_door.h"
38 * Service states monitored by nscd. Protected by
39 * readers/writer lock nscd_smf_service_state_lock
41 nscd_smf_state_t
*nscd_smf_service_state
;
42 static rwlock_t nscd_smf_service_state_lock
= DEFAULTRWLOCK
;
44 * init service state table
47 _nscd_alloc_service_state_table()
51 nscd_smf_service_state
= calloc(NSCD_NUM_SMF_FMRI
,
52 sizeof (nscd_smf_state_t
));
54 if (nscd_smf_service_state
== NULL
)
55 return (NSCD_NO_MEMORY
);
57 for (i
= 1; i
< NSCD_NUM_SMF_FMRI
; i
++)
58 NSCD_SMF_SVC_STATE(i
) = NSCD_SVC_STATE_UNINITED
;
60 return (NSCD_SUCCESS
);
64 query_smf_state(int srci
)
67 int ret
= NSCD_SVC_STATE_UNINITED
;
69 char *me
= "query_smf_state";
71 state
= smf_get_state(NSCD_SMF_SVC_FMRI(srci
));
75 _NSCD_LOG(NSCD_LOG_SMF_MONITOR
, NSCD_LOG_LEVEL_DEBUG
)
76 (me
, "%s -- %s\n", state
, NSCD_SMF_SVC_FMRI(srci
));
78 (void) rw_wrlock(&nscd_smf_service_state_lock
);
80 if (nscd_smf_service_state
[srci
].src_name
== NULL
)
81 nscd_smf_service_state
[srci
].src_name
=
82 NSCD_NSW_SRC_NAME(srci
);
84 if (strcmp(state
, SCF_STATE_STRING_UNINIT
) == 0)
85 NSCD_SMF_SVC_STATE(srci
) = SCF_STATE_UNINIT
;
86 else if (strcmp(state
, SCF_STATE_STRING_MAINT
) == 0)
87 NSCD_SMF_SVC_STATE(srci
) = SCF_STATE_MAINT
;
88 else if (strcmp(state
, SCF_STATE_STRING_OFFLINE
) == 0)
89 NSCD_SMF_SVC_STATE(srci
) = SCF_STATE_OFFLINE
;
90 else if (strcmp(state
, SCF_STATE_STRING_DISABLED
) == 0)
91 NSCD_SMF_SVC_STATE(srci
) = SCF_STATE_DISABLED
;
92 else if (strcmp(state
, SCF_STATE_STRING_ONLINE
) == 0)
93 NSCD_SMF_SVC_STATE(srci
) = SCF_STATE_ONLINE
;
94 else if (strcmp(state
, SCF_STATE_STRING_DEGRADED
) == 0)
95 NSCD_SMF_SVC_STATE(srci
) = SCF_STATE_DEGRADED
;
97 ret
= NSCD_SMF_SVC_STATE(srci
);
98 (void) rw_unlock(&nscd_smf_service_state_lock
);
106 set_smf_state(void *arg
)
112 (void) thr_setname(thr_self(), "set_smf_state");
115 * the forker nscd needs not monitor the state
116 * of the client services
118 if (_whoami
== NSCD_FORKER
)
124 /* skip the first service which is nscd */
125 for (i
= 1; i
< NSCD_NUM_SMF_FMRI
; i
++) {
126 st
= query_smf_state(i
);
127 if (st
== NSCD_SVC_STATE_UNINITED
)
131 (void) sleep(NSCD_SW_CFG_G
.check_smf_state_interval_g
);
134 /*LINTED E_FUNC_HAS_NO_RETURN_STMT*/
138 _nscd_init_smf_monitor() {
141 char *me
= "_nscd_init_smf_monitor";
143 _NSCD_LOG(NSCD_LOG_SMF_MONITOR
, NSCD_LOG_LEVEL_DEBUG
)
144 (me
, "initializing the smf monitor\n");
147 * start a thread to check the state of the client services
149 if (thr_create(NULL
, NULL
, set_smf_state
,
150 NULL
, THR_DETACHED
, NULL
) != 0) {
152 _NSCD_LOG(NSCD_LOG_SMF_MONITOR
, NSCD_LOG_LEVEL_ERROR
)
153 (me
, "thr_create: %s\n", strerror(errnum
));
154 return (NSCD_THREAD_CREATE_ERROR
);
157 return (NSCD_SUCCESS
);
161 _nscd_get_smf_state(int srci
, int dbi
, int recheck
)
166 n
= NSCD_NSW_SRC_NAME(srci
);
168 /* the files, compat, and dns backends are always available */
169 if ((*n
== 'f' || *n
== 'c' || *n
== 'd' || *n
== 'a') &&
170 (strcmp(NSCD_NSW_SRC_NAME(srci
), "files") == 0 ||
171 strcmp(NSCD_NSW_SRC_NAME(srci
), "compat") == 0 ||
172 strcmp(NSCD_NSW_SRC_NAME(srci
), "ad") == 0 ||
173 strcmp(NSCD_NSW_SRC_NAME(srci
), "dns") == 0)) {
174 return (SCF_STATE_ONLINE
);
178 * for the printer database and user backend, treat the
179 * backend as a unsupported one, as nscd can not access
180 * the home directory of the user
182 if (*n
== 'u' && strcmp(NSCD_NSW_SRC_NAME(srci
), "user") == 0) {
183 if (strcmp(NSCD_NSW_DB_NAME(dbi
), NSS_DBNAM_PRINTERS
) == 0)
184 return (NSCD_SVC_STATE_UNSUPPORTED_SRC
);
186 return (SCF_STATE_ONLINE
);
190 * Foreign backend is not supported by nscd unless
191 * the backend supports the nss2 interface (global
192 * symbol _nss_<backname name>_version is present),
193 * tell the switch engine to return NSS_TRYLOCAL
194 * if needed via rc NSCD_SVC_STATE_FOREIGN_SRC.
196 if (srci
>= _nscd_cfg_num_nsw_src
)
197 return (NSCD_SVC_STATE_FOREIGN_SRC
);
200 return (query_smf_state(srci
));
202 (void) rw_rdlock(&nscd_smf_service_state_lock
);
203 s
= NSCD_SMF_SVC_STATE(srci
);
204 (void) rw_unlock(&nscd_smf_service_state_lock
);
207 * if the state has been queried at least once but is
208 * still not online, query one more time
210 if (s
!= NSCD_SVC_STATE_UNINITED
&& s
< SCF_STATE_ONLINE
)
211 s
= query_smf_state(srci
);