1*641b8bafSpyr /* $OpenBSD: hce.c,v 1.25 2007/05/31 05:07:08 pyr Exp $ */ 2feb9ff76Sreyk 3feb9ff76Sreyk /* 4feb9ff76Sreyk * Copyright (c) 2006 Pierre-Yves Ritschard <pyr@spootnik.org> 5feb9ff76Sreyk * 6feb9ff76Sreyk * Permission to use, copy, modify, and distribute this software for any 7feb9ff76Sreyk * purpose with or without fee is hereby granted, provided that the above 8feb9ff76Sreyk * copyright notice and this permission notice appear in all copies. 9feb9ff76Sreyk * 10feb9ff76Sreyk * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11feb9ff76Sreyk * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12feb9ff76Sreyk * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13feb9ff76Sreyk * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14feb9ff76Sreyk * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15feb9ff76Sreyk * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16feb9ff76Sreyk * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17feb9ff76Sreyk */ 18feb9ff76Sreyk 19feb9ff76Sreyk #include <sys/queue.h> 20feb9ff76Sreyk #include <sys/param.h> 21feb9ff76Sreyk #include <sys/types.h> 22feb9ff76Sreyk #include <sys/time.h> 23feb9ff76Sreyk #include <sys/stat.h> 24feb9ff76Sreyk #include <sys/socket.h> 25feb9ff76Sreyk #include <sys/un.h> 26feb9ff76Sreyk #include <netinet/in_systm.h> 27feb9ff76Sreyk #include <netinet/in.h> 28feb9ff76Sreyk #include <netinet/ip.h> 29feb9ff76Sreyk #include <net/if.h> 30feb9ff76Sreyk #include <errno.h> 31feb9ff76Sreyk #include <event.h> 32feb9ff76Sreyk #include <fcntl.h> 33feb9ff76Sreyk #include <stdlib.h> 34feb9ff76Sreyk #include <string.h> 35feb9ff76Sreyk #include <unistd.h> 36feb9ff76Sreyk #include <err.h> 37feb9ff76Sreyk #include <pwd.h> 38feb9ff76Sreyk 39e8fb3979Spyr #include <openssl/ssl.h> 40e8fb3979Spyr 41ee9f3836Sderaadt #include "hoststated.h" 42feb9ff76Sreyk 43feb9ff76Sreyk void hce_sig_handler(int sig, short, void *); 44feb9ff76Sreyk void hce_shutdown(void); 45feb9ff76Sreyk void hce_dispatch_imsg(int, short, void *); 46feb9ff76Sreyk void hce_dispatch_parent(int, short, void *); 47feb9ff76Sreyk void hce_launch_checks(int, short, void *); 48*641b8bafSpyr void hce_setup_events(void); 49*641b8bafSpyr void hce_disable_events(void); 50feb9ff76Sreyk 518f79868bSpyr static struct hoststated *env = NULL; 52feb9ff76Sreyk struct imsgbuf *ibuf_pfe; 53feb9ff76Sreyk struct imsgbuf *ibuf_main; 54780e8f79Spyr int pipe_pfe; 55780e8f79Spyr int pipe_parent; 56780e8f79Spyr int running = 0; 57feb9ff76Sreyk 58feb9ff76Sreyk void 59feb9ff76Sreyk hce_sig_handler(int sig, short event, void *arg) 60feb9ff76Sreyk { 61feb9ff76Sreyk switch (sig) { 62feb9ff76Sreyk case SIGINT: 63feb9ff76Sreyk case SIGTERM: 64feb9ff76Sreyk hce_shutdown(); 65780e8f79Spyr break; 66780e8f79Spyr case SIGHUP: 67780e8f79Spyr break; 68feb9ff76Sreyk default: 69feb9ff76Sreyk fatalx("hce_sig_handler: unexpected signal"); 70feb9ff76Sreyk } 71feb9ff76Sreyk } 72feb9ff76Sreyk 73feb9ff76Sreyk pid_t 748f79868bSpyr hce(struct hoststated *x_env, int pipe_parent2pfe[2], int pipe_parent2hce[2], 75053249cdSpyr int pipe_parent2relay[RELAY_MAXPROC][2], int pipe_pfe2hce[2], 762edd718bSreyk int pipe_pfe2relay[RELAY_MAXPROC][2]) 77feb9ff76Sreyk { 78feb9ff76Sreyk pid_t pid; 79feb9ff76Sreyk struct passwd *pw; 802edd718bSreyk int i; 81*641b8bafSpyr struct event ev_sigint; 82*641b8bafSpyr struct event ev_sigterm; 83feb9ff76Sreyk 84feb9ff76Sreyk switch (pid = fork()) { 85feb9ff76Sreyk case -1: 86feb9ff76Sreyk fatal("hce: cannot fork"); 87feb9ff76Sreyk case 0: 88feb9ff76Sreyk break; 89feb9ff76Sreyk default: 90feb9ff76Sreyk return (pid); 91feb9ff76Sreyk } 92feb9ff76Sreyk 93feb9ff76Sreyk env = x_env; 9479446c9fSpyr purge_config(env, PURGE_SERVICES|PURGE_RELAYS|PURGE_PROTOS); 95feb9ff76Sreyk 968f79868bSpyr if ((pw = getpwnam(HOSTSTATED_USER)) == NULL) 97feb9ff76Sreyk fatal("hce: getpwnam"); 98feb9ff76Sreyk 99feb9ff76Sreyk if (chroot(pw->pw_dir) == -1) 100feb9ff76Sreyk fatal("hce: chroot"); 101feb9ff76Sreyk if (chdir("/") == -1) 102feb9ff76Sreyk fatal("hce: chdir(\"/\")"); 103feb9ff76Sreyk 104feb9ff76Sreyk setproctitle("host check engine"); 1058f79868bSpyr hoststated_process = PROC_HCE; 106feb9ff76Sreyk 10701d85ec5Sreyk /* this is needed for icmp tests */ 10801d85ec5Sreyk icmp_init(env); 10901d85ec5Sreyk 110feb9ff76Sreyk if (setgroups(1, &pw->pw_gid) || 111feb9ff76Sreyk setresgid(pw->pw_gid, pw->pw_gid, pw->pw_gid) || 112feb9ff76Sreyk setresuid(pw->pw_uid, pw->pw_uid, pw->pw_uid)) 113feb9ff76Sreyk fatal("hce: can't drop privileges"); 114feb9ff76Sreyk 115*641b8bafSpyr event_init(); 116feb9ff76Sreyk 117*641b8bafSpyr if ((ibuf_pfe = calloc(1, sizeof(struct imsgbuf))) == NULL || 118*641b8bafSpyr (ibuf_main = calloc(1, sizeof(struct imsgbuf))) == NULL) 119*641b8bafSpyr fatal("hce"); 120*641b8bafSpyr imsg_init(ibuf_pfe, pipe_pfe2hce[0], hce_dispatch_imsg); 121*641b8bafSpyr imsg_init(ibuf_main, pipe_parent2hce[1], hce_dispatch_parent); 122*641b8bafSpyr 123*641b8bafSpyr ibuf_pfe->events = EV_READ; 124*641b8bafSpyr event_set(&ibuf_pfe->ev, ibuf_pfe->fd, ibuf_pfe->events, 125*641b8bafSpyr ibuf_pfe->handler, ibuf_pfe); 126*641b8bafSpyr event_add(&ibuf_pfe->ev, NULL); 127*641b8bafSpyr 128*641b8bafSpyr ibuf_main->events = EV_READ; 129*641b8bafSpyr event_set(&ibuf_main->ev, ibuf_main->fd, ibuf_main->events, 130*641b8bafSpyr ibuf_main->handler, ibuf_main); 131*641b8bafSpyr event_add(&ibuf_main->ev, NULL); 132*641b8bafSpyr 133*641b8bafSpyr signal_set(&ev_sigint, SIGINT, hce_sig_handler, NULL); 134*641b8bafSpyr signal_set(&ev_sigterm, SIGTERM, hce_sig_handler, NULL); 135*641b8bafSpyr signal_add(&ev_sigint, NULL); 136*641b8bafSpyr signal_add(&ev_sigterm, NULL); 137*641b8bafSpyr signal(SIGPIPE, SIG_IGN); 138feb9ff76Sreyk 139feb9ff76Sreyk /* setup pipes */ 140feb9ff76Sreyk close(pipe_pfe2hce[1]); 141feb9ff76Sreyk close(pipe_parent2hce[0]); 142feb9ff76Sreyk close(pipe_parent2pfe[0]); 143feb9ff76Sreyk close(pipe_parent2pfe[1]); 1442edd718bSreyk for (i = 0; i < env->prefork_relay; i++) { 145053249cdSpyr close(pipe_parent2relay[i][0]); 146053249cdSpyr close(pipe_parent2relay[i][1]); 1472edd718bSreyk close(pipe_pfe2relay[i][0]); 1482edd718bSreyk close(pipe_pfe2relay[i][1]); 1492edd718bSreyk } 150feb9ff76Sreyk 151*641b8bafSpyr hce_setup_events(); 152*641b8bafSpyr event_dispatch(); 153780e8f79Spyr hce_shutdown(); 154780e8f79Spyr 155780e8f79Spyr return (0); 156780e8f79Spyr } 157780e8f79Spyr 158780e8f79Spyr void 159*641b8bafSpyr hce_setup_events(void) 160780e8f79Spyr { 161780e8f79Spyr struct timeval tv; 162780e8f79Spyr struct table *table; 163780e8f79Spyr 164780e8f79Spyr if (!TAILQ_EMPTY(env->tables)) { 16501d85ec5Sreyk evtimer_set(&env->ev, hce_launch_checks, env); 16601d85ec5Sreyk bzero(&tv, sizeof(tv)); 167feb9ff76Sreyk evtimer_add(&env->ev, &tv); 1682edd718bSreyk } 169feb9ff76Sreyk 170e8fb3979Spyr if (env->flags & F_SSL) { 171e8fb3979Spyr ssl_init(env); 172780e8f79Spyr TAILQ_FOREACH(table, env->tables, entry) { 17368b79041Spyr if (!(table->conf.flags & F_SSL)) 174e8fb3979Spyr continue; 175e8fb3979Spyr table->ssl_ctx = ssl_ctx_create(env); 176e8fb3979Spyr } 177e8fb3979Spyr } 178*641b8bafSpyr } 179*641b8bafSpyr 180*641b8bafSpyr void 181*641b8bafSpyr hce_disable_events(void) 182*641b8bafSpyr { 183*641b8bafSpyr struct table *table; 184*641b8bafSpyr struct host *host; 185*641b8bafSpyr 186*641b8bafSpyr evtimer_del(&env->ev); 187*641b8bafSpyr TAILQ_FOREACH(table, env->tables, entry) { 188*641b8bafSpyr TAILQ_FOREACH(host, &table->hosts, entry) { 189*641b8bafSpyr event_del(&host->cte.ev); 190*641b8bafSpyr close(host->cte.s); 191*641b8bafSpyr } 192*641b8bafSpyr } 193*641b8bafSpyr if (env->has_icmp) { 194*641b8bafSpyr event_del(&env->icmp_send.ev); 195*641b8bafSpyr event_del(&env->icmp_recv.ev); 196*641b8bafSpyr } 197*641b8bafSpyr if (env->has_icmp6) { 198*641b8bafSpyr event_del(&env->icmp6_send.ev); 199*641b8bafSpyr event_del(&env->icmp6_recv.ev); 200*641b8bafSpyr } 201feb9ff76Sreyk } 202feb9ff76Sreyk 203feb9ff76Sreyk void 204feb9ff76Sreyk hce_launch_checks(int fd, short event, void *arg) 205feb9ff76Sreyk { 206feb9ff76Sreyk struct host *host; 207feb9ff76Sreyk struct table *table; 20801d85ec5Sreyk struct timeval tv; 20901d85ec5Sreyk 21001d85ec5Sreyk /* 21101d85ec5Sreyk * notify pfe checks are done and schedule next check 21201d85ec5Sreyk */ 21301d85ec5Sreyk imsg_compose(ibuf_pfe, IMSG_SYNC, 0, 0, NULL, 0); 214780e8f79Spyr TAILQ_FOREACH(table, env->tables, entry) { 21501d85ec5Sreyk TAILQ_FOREACH(host, &table->hosts, entry) { 21601d85ec5Sreyk host->flags &= ~(F_CHECK_SENT|F_CHECK_DONE); 21701d85ec5Sreyk event_del(&host->cte.ev); 21801d85ec5Sreyk } 21901d85ec5Sreyk } 22001d85ec5Sreyk 22101d85ec5Sreyk if (gettimeofday(&tv, NULL)) 22201d85ec5Sreyk fatal("hce_launch_checks: gettimeofday"); 223feb9ff76Sreyk 224780e8f79Spyr TAILQ_FOREACH(table, env->tables, entry) { 22568b79041Spyr if (table->conf.flags & F_DISABLE) 2267e351ffdSreyk continue; 22768b79041Spyr if (table->conf.check == CHECK_NOCHECK) 2287e351ffdSreyk fatalx("hce_launch_checks: unknown check type"); 22901d85ec5Sreyk 2307e351ffdSreyk TAILQ_FOREACH(host, &table->hosts, entry) { 2317e351ffdSreyk if (host->flags & F_DISABLE) 2327e351ffdSreyk continue; 2334156152fSreyk switch (table->conf.check) { 2344156152fSreyk case CHECK_ICMP: 23501d85ec5Sreyk schedule_icmp(env, host); 2364156152fSreyk break; 2374156152fSreyk case CHECK_SCRIPT: 2384156152fSreyk check_script(host); 2394156152fSreyk break; 2404156152fSreyk default: 24101d85ec5Sreyk /* Any other TCP-style checks */ 2427e351ffdSreyk bzero(&host->cte, sizeof(host->cte)); 2437e351ffdSreyk host->last_up = host->up; 2447e351ffdSreyk host->cte.host = host; 2457e351ffdSreyk host->cte.table = table; 24601d85ec5Sreyk bcopy(&tv, &host->cte.tv_start, 24701d85ec5Sreyk sizeof(host->cte.tv_start)); 2487e351ffdSreyk check_tcp(&host->cte); 2494156152fSreyk break; 2504156152fSreyk } 2517e351ffdSreyk } 2527e351ffdSreyk } 25301d85ec5Sreyk check_icmp(env, &tv); 25401d85ec5Sreyk 25501d85ec5Sreyk bcopy(&env->interval, &tv, sizeof(tv)); 25601d85ec5Sreyk evtimer_add(&env->ev, &tv); 2577e351ffdSreyk } 2587e351ffdSreyk 2597e351ffdSreyk void 2607e351ffdSreyk hce_notify_done(struct host *host, const char *msg) 2617e351ffdSreyk { 262609cf3a7Sreyk struct table *table; 2637e351ffdSreyk struct ctl_status st; 264609cf3a7Sreyk struct timeval tv_now, tv_dur; 265609cf3a7Sreyk u_long duration; 266609cf3a7Sreyk u_int logopt; 2677e351ffdSreyk 2682edd718bSreyk if (host->up == HOST_DOWN && host->retry_cnt) { 2692edd718bSreyk log_debug("hce_notify_done: host %s retry %d", 27068b79041Spyr host->conf.name, host->retry_cnt); 271bd2508bcSreyk host->up = host->last_up; 2722edd718bSreyk host->retry_cnt--; 2732edd718bSreyk } else 27468b79041Spyr host->retry_cnt = host->conf.retry; 2752edd718bSreyk if (host->up != HOST_UNKNOWN) { 2762edd718bSreyk host->check_cnt++; 2772edd718bSreyk if (host->up == HOST_UP) 2782edd718bSreyk host->up_cnt++; 2792edd718bSreyk } 28068b79041Spyr st.id = host->conf.id; 281feb9ff76Sreyk st.up = host->up; 2822edd718bSreyk st.check_cnt = host->check_cnt; 2832edd718bSreyk st.retry_cnt = host->retry_cnt; 28401d85ec5Sreyk host->flags |= (F_CHECK_SENT|F_CHECK_DONE); 2857e351ffdSreyk if (msg) 28668b79041Spyr log_debug("hce_notify_done: %s (%s)", host->conf.name, msg); 287609cf3a7Sreyk 2887e351ffdSreyk imsg_compose(ibuf_pfe, IMSG_HOST_STATUS, 0, 0, &st, sizeof(st)); 2892edd718bSreyk if (host->up != host->last_up) 2902edd718bSreyk logopt = HOSTSTATED_OPT_LOGUPDATE; 2912edd718bSreyk else 292609cf3a7Sreyk logopt = HOSTSTATED_OPT_LOGNOTIFY; 293609cf3a7Sreyk 294609cf3a7Sreyk if (gettimeofday(&tv_now, NULL)) 295609cf3a7Sreyk fatal("hce_notify_done: gettimeofday"); 296609cf3a7Sreyk timersub(&tv_now, &host->cte.tv_start, &tv_dur); 297609cf3a7Sreyk if (timercmp(&host->cte.tv_start, &tv_dur, >)) 298609cf3a7Sreyk duration = (tv_dur.tv_sec * 1000) + (tv_dur.tv_usec / 1000.0); 299609cf3a7Sreyk else 300609cf3a7Sreyk duration = 0; 301609cf3a7Sreyk 30268b79041Spyr if ((table = table_find(env, host->conf.tableid)) == NULL) 3032edd718bSreyk fatalx("hce_notify_done: invalid table id"); 3042edd718bSreyk 305609cf3a7Sreyk if (env->opts & logopt) { 3062edd718bSreyk log_info("host %s, check %s%s (%lums), state %s -> %s, " 3072edd718bSreyk "availability %s", 30868b79041Spyr host->conf.name, table_check(table->conf.check), 30968b79041Spyr (table->conf.flags & F_SSL) ? " use ssl" : "", duration, 3102edd718bSreyk host_status(host->last_up), host_status(host->up), 3112edd718bSreyk print_availability(host->check_cnt, host->up_cnt)); 312feb9ff76Sreyk } 313609cf3a7Sreyk host->last_up = host->up; 314feb9ff76Sreyk } 315feb9ff76Sreyk 316feb9ff76Sreyk void 317feb9ff76Sreyk hce_shutdown(void) 318feb9ff76Sreyk { 319feb9ff76Sreyk log_info("host check engine exiting"); 320feb9ff76Sreyk _exit(0); 321feb9ff76Sreyk } 322feb9ff76Sreyk 323feb9ff76Sreyk void 324feb9ff76Sreyk hce_dispatch_imsg(int fd, short event, void *ptr) 325feb9ff76Sreyk { 326feb9ff76Sreyk struct imsgbuf *ibuf; 327feb9ff76Sreyk struct imsg imsg; 328feb9ff76Sreyk ssize_t n; 329feb9ff76Sreyk objid_t id; 330feb9ff76Sreyk struct host *host; 331feb9ff76Sreyk struct table *table; 332feb9ff76Sreyk 333feb9ff76Sreyk ibuf = ptr; 334feb9ff76Sreyk switch (event) { 335feb9ff76Sreyk case EV_READ: 336feb9ff76Sreyk if ((n = imsg_read(ibuf)) == -1) 337feb9ff76Sreyk fatal("hce_dispatch_imsg: imsg_read_error"); 338feb9ff76Sreyk if (n == 0) 339feb9ff76Sreyk fatalx("hce_dispatch_imsg: pipe closed"); 340feb9ff76Sreyk break; 341feb9ff76Sreyk case EV_WRITE: 342feb9ff76Sreyk if (msgbuf_write(&ibuf->w) == -1) 343feb9ff76Sreyk fatal("hce_dispatch_imsg: msgbuf_write"); 344feb9ff76Sreyk imsg_event_add(ibuf); 345feb9ff76Sreyk return; 346feb9ff76Sreyk default: 347feb9ff76Sreyk fatalx("hce_dispatch_imsg: unknown event"); 348feb9ff76Sreyk } 349feb9ff76Sreyk 350feb9ff76Sreyk for (;;) { 351feb9ff76Sreyk if ((n = imsg_get(ibuf, &imsg)) == -1) 352feb9ff76Sreyk fatal("hce_dispatch_imsg: imsg_read error"); 353feb9ff76Sreyk if (n == 0) 354feb9ff76Sreyk break; 355feb9ff76Sreyk 356feb9ff76Sreyk switch (imsg.hdr.type) { 357feb9ff76Sreyk case IMSG_HOST_DISABLE: 358feb9ff76Sreyk memcpy(&id, imsg.data, sizeof(id)); 359feb9ff76Sreyk if ((host = host_find(env, id)) == NULL) 360feb9ff76Sreyk fatalx("hce_dispatch_imsg: desynchronized"); 361feb9ff76Sreyk host->flags |= F_DISABLE; 362feb9ff76Sreyk host->up = HOST_UNKNOWN; 3632edd718bSreyk host->check_cnt = 0; 3642edd718bSreyk host->up_cnt = 0; 365feb9ff76Sreyk break; 366feb9ff76Sreyk case IMSG_HOST_ENABLE: 367feb9ff76Sreyk memcpy(&id, imsg.data, sizeof(id)); 368feb9ff76Sreyk if ((host = host_find(env, id)) == NULL) 369feb9ff76Sreyk fatalx("hce_dispatch_imsg: desynchronized"); 370feb9ff76Sreyk host->flags &= ~(F_DISABLE); 371feb9ff76Sreyk host->up = HOST_UNKNOWN; 372feb9ff76Sreyk break; 373feb9ff76Sreyk case IMSG_TABLE_DISABLE: 374feb9ff76Sreyk memcpy(&id, imsg.data, sizeof(id)); 375feb9ff76Sreyk if ((table = table_find(env, id)) == NULL) 376feb9ff76Sreyk fatalx("hce_dispatch_imsg: desynchronized"); 37768b79041Spyr table->conf.flags |= F_DISABLE; 378feb9ff76Sreyk TAILQ_FOREACH(host, &table->hosts, entry) 379feb9ff76Sreyk host->up = HOST_UNKNOWN; 380feb9ff76Sreyk break; 381feb9ff76Sreyk case IMSG_TABLE_ENABLE: 382feb9ff76Sreyk memcpy(&id, imsg.data, sizeof(id)); 383feb9ff76Sreyk if ((table = table_find(env, id)) == NULL) 384feb9ff76Sreyk fatalx("hce_dispatch_imsg: desynchronized"); 38568b79041Spyr table->conf.flags &= ~(F_DISABLE); 386feb9ff76Sreyk TAILQ_FOREACH(host, &table->hosts, entry) 387feb9ff76Sreyk host->up = HOST_UNKNOWN; 388feb9ff76Sreyk break; 389feb9ff76Sreyk default: 390feb9ff76Sreyk log_debug("hce_dispatch_msg: unexpected imsg %d", 391feb9ff76Sreyk imsg.hdr.type); 392feb9ff76Sreyk break; 393feb9ff76Sreyk } 394feb9ff76Sreyk imsg_free(&imsg); 395feb9ff76Sreyk } 396feb9ff76Sreyk imsg_event_add(ibuf); 397feb9ff76Sreyk } 398feb9ff76Sreyk 399feb9ff76Sreyk void 400feb9ff76Sreyk hce_dispatch_parent(int fd, short event, void * ptr) 401feb9ff76Sreyk { 402feb9ff76Sreyk struct imsgbuf *ibuf; 403feb9ff76Sreyk struct imsg imsg; 4044156152fSreyk struct ctl_script scr; 405feb9ff76Sreyk ssize_t n; 406feb9ff76Sreyk 407feb9ff76Sreyk ibuf = ptr; 408feb9ff76Sreyk switch (event) { 409feb9ff76Sreyk case EV_READ: 410feb9ff76Sreyk if ((n = imsg_read(ibuf)) == -1) 411feb9ff76Sreyk fatal("hce_dispatch_parent: imsg_read error"); 4122edd718bSreyk if (n == 0) 413feb9ff76Sreyk fatalx("hce_dispatch_parent: pipe closed"); 414feb9ff76Sreyk break; 415feb9ff76Sreyk case EV_WRITE: 416feb9ff76Sreyk if (msgbuf_write(&ibuf->w) == -1) 417feb9ff76Sreyk fatal("hce_dispatch_parent: msgbuf_write"); 418feb9ff76Sreyk imsg_event_add(ibuf); 419feb9ff76Sreyk return; 420feb9ff76Sreyk default: 421feb9ff76Sreyk fatalx("hce_dispatch_parent: unknown event"); 422feb9ff76Sreyk } 423feb9ff76Sreyk 424feb9ff76Sreyk for (;;) { 425feb9ff76Sreyk if ((n = imsg_get(ibuf, &imsg)) == -1) 426feb9ff76Sreyk fatal("hce_dispatch_parent: imsg_read error"); 427feb9ff76Sreyk if (n == 0) 428feb9ff76Sreyk break; 429feb9ff76Sreyk 430feb9ff76Sreyk switch (imsg.hdr.type) { 4314156152fSreyk case IMSG_SCRIPT: 4324156152fSreyk if (imsg.hdr.len - IMSG_HEADER_SIZE != 4334156152fSreyk sizeof(scr)) 4344156152fSreyk fatalx("hce_dispatch_parent: " 4354156152fSreyk "invalid size of script request"); 4364156152fSreyk bcopy(imsg.data, &scr, sizeof(scr)); 4374156152fSreyk script_done(env, &scr); 4384156152fSreyk break; 439feb9ff76Sreyk default: 440feb9ff76Sreyk log_debug("hce_dispatch_parent: unexpected imsg %d", 441feb9ff76Sreyk imsg.hdr.type); 442feb9ff76Sreyk break; 443feb9ff76Sreyk } 444feb9ff76Sreyk imsg_free(&imsg); 445feb9ff76Sreyk } 4464156152fSreyk imsg_event_add(ibuf); 447feb9ff76Sreyk } 448