zoneadmd.c (6a634c9dca3093f3922e4b7ab826d7bdf17bf78e) zoneadmd.c (3c7284bd3243d42a710edac3a15f6019b4c849be)
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

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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/*
23 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
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

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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/*
23 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Copyright 2014 Nexenta Systems, Inc. All rights reserved.
24 */
25
26/*
27 * zoneadmd manages zones; one zoneadmd process is launched for each
28 * non-global zone on the system. This daemon juggles four jobs:
29 *
30 * - Implement setup and teardown of the zone "virtual platform": mount and
31 * unmount filesystems; create and destroy network interfaces; communicate

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94#include <sys/brand.h>
95#include <libcontract.h>
96#include <libcontract_priv.h>
97#include <sys/brand.h>
98#include <sys/contract/process.h>
99#include <sys/ctfs.h>
100#include <libdladm.h>
101#include <sys/dls_mgmt.h>
25 */
26
27/*
28 * zoneadmd manages zones; one zoneadmd process is launched for each
29 * non-global zone on the system. This daemon juggles four jobs:
30 *
31 * - Implement setup and teardown of the zone "virtual platform": mount and
32 * unmount filesystems; create and destroy network interfaces; communicate

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95#include <sys/brand.h>
96#include <libcontract.h>
97#include <libcontract_priv.h>
98#include <sys/brand.h>
99#include <sys/contract/process.h>
100#include <sys/ctfs.h>
101#include <libdladm.h>
102#include <sys/dls_mgmt.h>
103#include <libscf.h>
102
103#include <libzonecfg.h>
104#include <zonestat_impl.h>
105#include "zoneadmd.h"
106
107static char *progname;
108char *zone_name; /* zone which we are managing */
109char pool_name[MAXNAMELEN];
110char default_brand[MAXNAMELEN];
111char brand_name[MAXNAMELEN];
112boolean_t zone_isnative;
113boolean_t zone_iscluster;
114boolean_t zone_islabeled;
104
105#include <libzonecfg.h>
106#include <zonestat_impl.h>
107#include "zoneadmd.h"
108
109static char *progname;
110char *zone_name; /* zone which we are managing */
111char pool_name[MAXNAMELEN];
112char default_brand[MAXNAMELEN];
113char brand_name[MAXNAMELEN];
114boolean_t zone_isnative;
115boolean_t zone_iscluster;
116boolean_t zone_islabeled;
117boolean_t shutdown_in_progress;
115static zoneid_t zone_id;
116dladm_handle_t dld_handle = NULL;
117
118static char pre_statechg_hook[2 * MAXPATHLEN];
119static char post_statechg_hook[2 * MAXPATHLEN];
120char query_hook[2 * MAXPATHLEN];
121
122zlog_t logsys;

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139#define DEFAULT_LOCALE "C"
140
141static const char *
142z_cmd_name(zone_cmd_t zcmd)
143{
144 /* This list needs to match the enum in sys/zone.h */
145 static const char *zcmdstr[] = {
146 "ready", "boot", "forceboot", "reboot", "halt",
118static zoneid_t zone_id;
119dladm_handle_t dld_handle = NULL;
120
121static char pre_statechg_hook[2 * MAXPATHLEN];
122static char post_statechg_hook[2 * MAXPATHLEN];
123char query_hook[2 * MAXPATHLEN];
124
125zlog_t logsys;

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142#define DEFAULT_LOCALE "C"
143
144static const char *
145z_cmd_name(zone_cmd_t zcmd)
146{
147 /* This list needs to match the enum in sys/zone.h */
148 static const char *zcmdstr[] = {
149 "ready", "boot", "forceboot", "reboot", "halt",
147 "note_uninstalling", "mount", "forcemount", "unmount"
150 "note_uninstalling", "mount", "forcemount", "unmount",
151 "shutdown"
148 };
149
150 if (zcmd >= sizeof (zcmdstr) / sizeof (*zcmdstr))
151 return ("unknown");
152 else
153 return (zcmdstr[(int)zcmd]);
154}
155

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981 zonecfg_strerror(err));
982
983 if (brand_poststatechg(zlogp, zstate, Z_HALT) != 0)
984 return (-1);
985
986 return (0);
987}
988
152 };
153
154 if (zcmd >= sizeof (zcmdstr) / sizeof (*zcmdstr))
155 return ("unknown");
156 else
157 return (zcmdstr[(int)zcmd]);
158}
159

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985 zonecfg_strerror(err));
986
987 if (brand_poststatechg(zlogp, zstate, Z_HALT) != 0)
988 return (-1);
989
990 return (0);
991}
992
993static int
994zone_graceful_shutdown(zlog_t *zlogp)
995{
996 zoneid_t zoneid;
997 pid_t child;
998 char cmdbuf[MAXPATHLEN];
999 brand_handle_t bh = NULL;
1000 char zpath[MAXPATHLEN];
1001 ctid_t ct;
1002 int tmpl_fd;
1003 int child_status;
1004
1005 if (shutdown_in_progress) {
1006 zerror(zlogp, B_FALSE, "shutdown already in progress");
1007 return (-1);
1008 }
1009
1010 if ((zoneid = getzoneidbyname(zone_name)) == -1) {
1011 zerror(zlogp, B_TRUE, "unable to get zoneid");
1012 return (-1);
1013 }
1014
1015 /* Get a handle to the brand info for this zone */
1016 if ((bh = brand_open(brand_name)) == NULL) {
1017 zerror(zlogp, B_FALSE, "unable to determine zone brand");
1018 return (-1);
1019 }
1020
1021 if (zone_get_zonepath(zone_name, zpath, sizeof (zpath)) != Z_OK) {
1022 zerror(zlogp, B_FALSE, "unable to determine zone path");
1023 brand_close(bh);
1024 return (-1);
1025 }
1026
1027 /*
1028 * If there is a brand 'shutdown' callback, execute it now to give the
1029 * brand a chance to cleanup any custom configuration.
1030 */
1031 (void) strcpy(cmdbuf, EXEC_PREFIX);
1032 if (brand_get_shutdown(bh, zone_name, zpath, cmdbuf + EXEC_LEN,
1033 sizeof (cmdbuf) - EXEC_LEN) != 0 || strlen(cmdbuf) <= EXEC_LEN) {
1034 (void) strcat(cmdbuf, SHUTDOWN_DEFAULT);
1035 }
1036 brand_close(bh);
1037
1038 if ((tmpl_fd = init_template()) == -1) {
1039 zerror(zlogp, B_TRUE, "failed to create contract");
1040 return (-1);
1041 }
1042
1043 if ((child = fork()) == -1) {
1044 (void) ct_tmpl_clear(tmpl_fd);
1045 (void) close(tmpl_fd);
1046 zerror(zlogp, B_TRUE, "failed to fork");
1047 return (-1);
1048 } else if (child == 0) {
1049 (void) ct_tmpl_clear(tmpl_fd);
1050 if (zone_enter(zoneid) == -1) {
1051 _exit(errno);
1052 }
1053 _exit(execl("/bin/sh", "sh", "-c", cmdbuf, (char *)NULL));
1054 }
1055
1056 if (contract_latest(&ct) == -1)
1057 ct = -1;
1058 (void) ct_tmpl_clear(tmpl_fd);
1059 (void) close(tmpl_fd);
1060
1061 if (waitpid(child, &child_status, 0) != child) {
1062 /* unexpected: we must have been signalled */
1063 (void) contract_abandon_id(ct);
1064 return (-1);
1065 }
1066
1067 (void) contract_abandon_id(ct);
1068 if (WEXITSTATUS(child_status) != 0) {
1069 errno = WEXITSTATUS(child_status);
1070 zerror(zlogp, B_FALSE, "unable to shutdown zone");
1071 return (-1);
1072 }
1073
1074 shutdown_in_progress = B_TRUE;
1075
1076 return (0);
1077}
1078
1079static int
1080zone_wait_shutdown(zlog_t *zlogp)
1081{
1082 zone_state_t zstate;
1083 uint64_t *tm = NULL;
1084 scf_simple_prop_t *prop = NULL;
1085 int timeout;
1086 int tries;
1087 int rc = -1;
1088
1089 /* Get default stop timeout from SMF framework */
1090 timeout = SHUTDOWN_WAIT;
1091 if ((prop = scf_simple_prop_get(NULL, SHUTDOWN_FMRI, "stop",
1092 SCF_PROPERTY_TIMEOUT)) != NULL) {
1093 if ((tm = scf_simple_prop_next_count(prop)) != NULL) {
1094 if (tm != 0)
1095 timeout = *tm;
1096 }
1097 scf_simple_prop_free(prop);
1098 }
1099
1100 /* allow time for zone to shutdown cleanly */
1101 for (tries = 0; tries < timeout; tries ++) {
1102 (void) sleep(1);
1103 if (zone_get_state(zone_name, &zstate) == Z_OK &&
1104 zstate == ZONE_STATE_INSTALLED) {
1105 rc = 0;
1106 break;
1107 }
1108 }
1109
1110 if (rc != 0)
1111 zerror(zlogp, B_FALSE, "unable to shutdown zone");
1112
1113 shutdown_in_progress = B_FALSE;
1114
1115 return (rc);
1116}
1117
1118
1119
989/*
990 * Generate AUE_zone_state for a command that boots a zone.
991 */
992static void
993audit_put_record(zlog_t *zlogp, ucred_t *uc, int return_val,
994 char *new_state)
995{
996 adt_session_data_t *ah;

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1056 uint64_t uniqid;
1057 zoneid_t zoneid = -1;
1058 zlog_t zlog;
1059 zlog_t *zlogp;
1060 zone_cmd_rval_t *rvalp;
1061 size_t rlen = getpagesize(); /* conservative */
1062 fs_callback_t cb;
1063 brand_handle_t bh;
1120/*
1121 * Generate AUE_zone_state for a command that boots a zone.
1122 */
1123static void
1124audit_put_record(zlog_t *zlogp, ucred_t *uc, int return_val,
1125 char *new_state)
1126{
1127 adt_session_data_t *ah;

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1187 uint64_t uniqid;
1188 zoneid_t zoneid = -1;
1189 zlog_t zlog;
1190 zlog_t *zlogp;
1191 zone_cmd_rval_t *rvalp;
1192 size_t rlen = getpagesize(); /* conservative */
1193 fs_callback_t cb;
1194 brand_handle_t bh;
1195 boolean_t wait_shut = B_FALSE;
1064
1065 /* LINTED E_BAD_PTR_CAST_ALIGN */
1066 zargp = (zone_cmd_arg_t *)args;
1067
1068 /*
1069 * When we get the door unref message, we've fdetach'd the door, and
1070 * it is time for us to shut down zoneadmd.
1071 */

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1132 (void) door_return(NULL, 0, 0, 0);
1133 thr_exit(NULL);
1134 }
1135
1136 /*
1137 * Check for validity of command.
1138 */
1139 if (cmd != Z_READY && cmd != Z_BOOT && cmd != Z_FORCEBOOT &&
1196
1197 /* LINTED E_BAD_PTR_CAST_ALIGN */
1198 zargp = (zone_cmd_arg_t *)args;
1199
1200 /*
1201 * When we get the door unref message, we've fdetach'd the door, and
1202 * it is time for us to shut down zoneadmd.
1203 */

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1264 (void) door_return(NULL, 0, 0, 0);
1265 thr_exit(NULL);
1266 }
1267
1268 /*
1269 * Check for validity of command.
1270 */
1271 if (cmd != Z_READY && cmd != Z_BOOT && cmd != Z_FORCEBOOT &&
1140 cmd != Z_REBOOT && cmd != Z_HALT && cmd != Z_NOTE_UNINSTALLING &&
1141 cmd != Z_MOUNT && cmd != Z_FORCEMOUNT && cmd != Z_UNMOUNT) {
1272 cmd != Z_REBOOT && cmd != Z_SHUTDOWN && cmd != Z_HALT &&
1273 cmd != Z_NOTE_UNINSTALLING && cmd != Z_MOUNT &&
1274 cmd != Z_FORCEMOUNT && cmd != Z_UNMOUNT) {
1142 zerror(&logsys, B_FALSE, "invalid command %d", (int)cmd);
1143 goto out;
1144 }
1145
1146 if (kernelcall && (cmd != Z_HALT && cmd != Z_REBOOT)) {
1147 /*
1148 * Can't happen
1149 */

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1219 audit_put_record(zlogp, uc, rval, "boot");
1220 if (rval != 0) {
1221 bringup_failure_recovery = B_TRUE;
1222 (void) zone_halt(zlogp, B_FALSE, B_FALSE,
1223 zstate);
1224 eventstream_write(Z_EVT_ZONE_BOOTFAILED);
1225 }
1226 break;
1275 zerror(&logsys, B_FALSE, "invalid command %d", (int)cmd);
1276 goto out;
1277 }
1278
1279 if (kernelcall && (cmd != Z_HALT && cmd != Z_REBOOT)) {
1280 /*
1281 * Can't happen
1282 */

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1352 audit_put_record(zlogp, uc, rval, "boot");
1353 if (rval != 0) {
1354 bringup_failure_recovery = B_TRUE;
1355 (void) zone_halt(zlogp, B_FALSE, B_FALSE,
1356 zstate);
1357 eventstream_write(Z_EVT_ZONE_BOOTFAILED);
1358 }
1359 break;
1360 case Z_SHUTDOWN:
1227 case Z_HALT:
1228 if (kernelcall) /* Invalid; can't happen */
1229 abort();
1230 /*
1231 * We could have two clients racing to halt this
1232 * zone; the second client loses, but his request
1233 * doesn't fail, since the zone is now in the desired
1234 * state.

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1349 case Z_HALT:
1350 if (kernelcall) /* Invalid; can't happen */
1351 abort();
1352 if ((rval = zone_halt(zlogp, B_FALSE, B_FALSE, zstate))
1353 != 0)
1354 break;
1355 eventstream_write(Z_EVT_ZONE_HALTED);
1356 break;
1361 case Z_HALT:
1362 if (kernelcall) /* Invalid; can't happen */
1363 abort();
1364 /*
1365 * We could have two clients racing to halt this
1366 * zone; the second client loses, but his request
1367 * doesn't fail, since the zone is now in the desired
1368 * state.

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1483 case Z_HALT:
1484 if (kernelcall) /* Invalid; can't happen */
1485 abort();
1486 if ((rval = zone_halt(zlogp, B_FALSE, B_FALSE, zstate))
1487 != 0)
1488 break;
1489 eventstream_write(Z_EVT_ZONE_HALTED);
1490 break;
1491 case Z_SHUTDOWN:
1357 case Z_REBOOT:
1358 case Z_NOTE_UNINSTALLING:
1359 case Z_MOUNT:
1360 case Z_UNMOUNT:
1361 if (kernelcall) /* Invalid; can't happen */
1362 abort();
1363 zerror(zlogp, B_FALSE, "%s operation is invalid "
1364 "for zones in state '%s'", z_cmd_name(cmd),

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1439 audit_put_record(zlogp, uc, rval, "reboot");
1440 if (rval != 0) {
1441 (void) zone_halt(zlogp, B_FALSE, B_TRUE,
1442 zstate);
1443 eventstream_write(Z_EVT_ZONE_BOOTFAILED);
1444 }
1445 boot_args[0] = '\0';
1446 break;
1492 case Z_REBOOT:
1493 case Z_NOTE_UNINSTALLING:
1494 case Z_MOUNT:
1495 case Z_UNMOUNT:
1496 if (kernelcall) /* Invalid; can't happen */
1497 abort();
1498 zerror(zlogp, B_FALSE, "%s operation is invalid "
1499 "for zones in state '%s'", z_cmd_name(cmd),

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1574 audit_put_record(zlogp, uc, rval, "reboot");
1575 if (rval != 0) {
1576 (void) zone_halt(zlogp, B_FALSE, B_TRUE,
1577 zstate);
1578 eventstream_write(Z_EVT_ZONE_BOOTFAILED);
1579 }
1580 boot_args[0] = '\0';
1581 break;
1582 case Z_SHUTDOWN:
1583 if ((rval = zone_graceful_shutdown(zlogp)) == 0) {
1584 wait_shut = B_TRUE;
1585 }
1586 break;
1447 case Z_NOTE_UNINSTALLING:
1448 case Z_MOUNT:
1449 case Z_UNMOUNT:
1450 zerror(zlogp, B_FALSE, "%s operation is invalid "
1451 "for zones in state '%s'", z_cmd_name(cmd),
1452 zone_state_str(zstate));
1453 rval = -1;
1454 break;

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1462 * Because the state of the zone may have changed, we make sure
1463 * to wake the console poller, which is in charge of initiating
1464 * the shutdown procedure as necessary.
1465 */
1466 eventstream_write(Z_EVT_NULL);
1467
1468out:
1469 (void) mutex_unlock(&lock);
1587 case Z_NOTE_UNINSTALLING:
1588 case Z_MOUNT:
1589 case Z_UNMOUNT:
1590 zerror(zlogp, B_FALSE, "%s operation is invalid "
1591 "for zones in state '%s'", z_cmd_name(cmd),
1592 zone_state_str(zstate));
1593 rval = -1;
1594 break;

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1602 * Because the state of the zone may have changed, we make sure
1603 * to wake the console poller, which is in charge of initiating
1604 * the shutdown procedure as necessary.
1605 */
1606 eventstream_write(Z_EVT_NULL);
1607
1608out:
1609 (void) mutex_unlock(&lock);
1610
1611 /* Wait for the Z_SHUTDOWN commands to complete */
1612 if (wait_shut)
1613 rval = zone_wait_shutdown(zlogp);
1614
1470 if (kernelcall) {
1471 rvalp = NULL;
1472 rlen = 0;
1473 } else {
1474 rvalp->rval = rval;
1475 }
1476 if (uc != NULL)
1477 ucred_free(uc);

--- 659 unchanged lines hidden --- 		1615 if (kernelcall) {
1616 rvalp = NULL;
1617 rlen = 0;
1618 } else {
1619 rvalp->rval = rval;
1620 }
1621 if (uc != NULL)
1622 ucred_free(uc);

--- 659 unchanged lines hidden ---