18fae3551SRodney W. Grimes /*- 28fae3551SRodney W. Grimes * Copyright (c) 1991, 1993 38fae3551SRodney W. Grimes * The Regents of the University of California. All rights reserved. 48fae3551SRodney W. Grimes * 58fae3551SRodney W. Grimes * This code is derived from software contributed to Berkeley by 68fae3551SRodney W. Grimes * Donn Seeley at Berkeley Software Design, Inc. 78fae3551SRodney W. Grimes * 88fae3551SRodney W. Grimes * Redistribution and use in source and binary forms, with or without 98fae3551SRodney W. Grimes * modification, are permitted provided that the following conditions 108fae3551SRodney W. Grimes * are met: 118fae3551SRodney W. Grimes * 1. Redistributions of source code must retain the above copyright 128fae3551SRodney W. Grimes * notice, this list of conditions and the following disclaimer. 138fae3551SRodney W. Grimes * 2. Redistributions in binary form must reproduce the above copyright 148fae3551SRodney W. Grimes * notice, this list of conditions and the following disclaimer in the 158fae3551SRodney W. Grimes * documentation and/or other materials provided with the distribution. 168fae3551SRodney W. Grimes * 4. Neither the name of the University nor the names of its contributors 178fae3551SRodney W. Grimes * may be used to endorse or promote products derived from this software 188fae3551SRodney W. Grimes * without specific prior written permission. 198fae3551SRodney W. Grimes * 208fae3551SRodney W. Grimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 218fae3551SRodney W. Grimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 228fae3551SRodney W. Grimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 238fae3551SRodney W. Grimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 248fae3551SRodney W. Grimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 258fae3551SRodney W. Grimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 268fae3551SRodney W. Grimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 278fae3551SRodney W. Grimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 288fae3551SRodney W. Grimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 298fae3551SRodney W. Grimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 308fae3551SRodney W. Grimes * SUCH DAMAGE. 318fae3551SRodney W. Grimes */ 328fae3551SRodney W. Grimes 338fae3551SRodney W. Grimes #ifndef lint 345df42cf4SPhilippe Charnier static const char copyright[] = 358fae3551SRodney W. Grimes "@(#) Copyright (c) 1991, 1993\n\ 368fae3551SRodney W. Grimes The Regents of the University of California. All rights reserved.\n"; 378fae3551SRodney W. Grimes #endif /* not lint */ 388fae3551SRodney W. Grimes 398fae3551SRodney W. Grimes #ifndef lint 405df42cf4SPhilippe Charnier #if 0 418fae3551SRodney W. Grimes static char sccsid[] = "@(#)init.c 8.1 (Berkeley) 7/15/93"; 425df42cf4SPhilippe Charnier #endif 435df42cf4SPhilippe Charnier static const char rcsid[] = 447f3dea24SPeter Wemm "$FreeBSD$"; 458fae3551SRodney W. Grimes #endif /* not lint */ 468fae3551SRodney W. Grimes 478fae3551SRodney W. Grimes #include <sys/param.h> 488889c700SDavid Nugent #include <sys/ioctl.h> 493f5ac575SEdward Tomasz Napierala #include <sys/mman.h> 5057622f22SPoul-Henning Kamp #include <sys/mount.h> 518fae3551SRodney W. Grimes #include <sys/sysctl.h> 528fae3551SRodney W. Grimes #include <sys/wait.h> 5386bf62dcSDavid Nugent #include <sys/stat.h> 541f083b1eSMaxime Henrion #include <sys/uio.h> 558fae3551SRodney W. Grimes 568fae3551SRodney W. Grimes #include <db.h> 578fae3551SRodney W. Grimes #include <errno.h> 588fae3551SRodney W. Grimes #include <fcntl.h> 591a7bec91SWarner Losh #include <kenv.h> 60423b6a39SAndrey A. Chernov #include <libutil.h> 611a37aa56SDavid E. O'Brien #include <paths.h> 628fae3551SRodney W. Grimes #include <signal.h> 638fae3551SRodney W. Grimes #include <stdio.h> 648fae3551SRodney W. Grimes #include <stdlib.h> 658fae3551SRodney W. Grimes #include <string.h> 668fae3551SRodney W. Grimes #include <syslog.h> 678fae3551SRodney W. Grimes #include <time.h> 688fae3551SRodney W. Grimes #include <ttyent.h> 698fae3551SRodney W. Grimes #include <unistd.h> 70e460cfd3SNate Williams #include <sys/reboot.h> 71c5842835SPhilippe Charnier #include <err.h> 728fae3551SRodney W. Grimes 738fae3551SRodney W. Grimes #include <stdarg.h> 748fae3551SRodney W. Grimes 758fae3551SRodney W. Grimes #ifdef SECURE 768fae3551SRodney W. Grimes #include <pwd.h> 778fae3551SRodney W. Grimes #endif 788fae3551SRodney W. Grimes 791ef60eb1SDavid Nugent #ifdef LOGIN_CAP 801ef60eb1SDavid Nugent #include <login_cap.h> 811ef60eb1SDavid Nugent #endif 821ef60eb1SDavid Nugent 833f5ac575SEdward Tomasz Napierala #include "mntopts.h" 848fae3551SRodney W. Grimes #include "pathnames.h" 858fae3551SRodney W. Grimes 868fae3551SRodney W. Grimes /* 878fae3551SRodney W. Grimes * Sleep times; used to prevent thrashing. 888fae3551SRodney W. Grimes */ 898fae3551SRodney W. Grimes #define GETTY_SPACING 5 /* N secs minimum getty spacing */ 908fae3551SRodney W. Grimes #define GETTY_SLEEP 30 /* sleep N secs after spacing problem */ 91b5df27e2SAndrey A. Chernov #define GETTY_NSPACE 3 /* max. spacing count to bring reaction */ 928fae3551SRodney W. Grimes #define WINDOW_WAIT 3 /* wait N secs after starting window */ 938fae3551SRodney W. Grimes #define STALL_TIMEOUT 30 /* wait N secs after warning */ 948fae3551SRodney W. Grimes #define DEATH_WATCH 10 /* wait N secs for procs to die */ 955df42cf4SPhilippe Charnier #define DEATH_SCRIPT 120 /* wait for 2min for /etc/rc.shutdown */ 96e82d5545SDavid Nugent #define RESOURCE_RC "daemon" 97e82d5545SDavid Nugent #define RESOURCE_WINDOW "default" 98e82d5545SDavid Nugent #define RESOURCE_GETTY "default" 998fae3551SRodney W. Grimes 10045cfb1dcSXin LI static void handle(sig_t, ...); 10145cfb1dcSXin LI static void delset(sigset_t *, ...); 1028fae3551SRodney W. Grimes 10345cfb1dcSXin LI static void stall(const char *, ...) __printflike(1, 2); 10445cfb1dcSXin LI static void warning(const char *, ...) __printflike(1, 2); 10545cfb1dcSXin LI static void emergency(const char *, ...) __printflike(1, 2); 10645cfb1dcSXin LI static void disaster(int); 10745cfb1dcSXin LI static void badsys(int); 1083f5ac575SEdward Tomasz Napierala static void revoke_ttys(void); 10945cfb1dcSXin LI static int runshutdown(void); 110ab03e6d5SXin LI static char *strk(char *); 1118fae3551SRodney W. Grimes 1128fae3551SRodney W. Grimes /* 1138fae3551SRodney W. Grimes * We really need a recursive typedef... 1148fae3551SRodney W. Grimes * The following at least guarantees that the return type of (*state_t)() 1158fae3551SRodney W. Grimes * is sufficiently wide to hold a function pointer. 1168fae3551SRodney W. Grimes */ 11773bf18edSWarner Losh typedef long (*state_func_t)(void); 11873bf18edSWarner Losh typedef state_func_t (*state_t)(void); 1198fae3551SRodney W. Grimes 12045cfb1dcSXin LI static state_func_t single_user(void); 12145cfb1dcSXin LI static state_func_t runcom(void); 12245cfb1dcSXin LI static state_func_t read_ttys(void); 12345cfb1dcSXin LI static state_func_t multi_user(void); 12445cfb1dcSXin LI static state_func_t clean_ttys(void); 12545cfb1dcSXin LI static state_func_t catatonia(void); 12645cfb1dcSXin LI static state_func_t death(void); 127acf0ab06SJilles Tjoelker static state_func_t death_single(void); 1283f5ac575SEdward Tomasz Napierala static state_func_t reroot(void); 1293f5ac575SEdward Tomasz Napierala static state_func_t reroot_phase_two(void); 1308fae3551SRodney W. Grimes 13145cfb1dcSXin LI static state_func_t run_script(const char *); 1321a7bec91SWarner Losh 1331efe3c6bSEd Schouten static enum { AUTOBOOT, FASTBOOT } runcom_mode = AUTOBOOT; 13477103ea3SPoul-Henning Kamp #define FALSE 0 13577103ea3SPoul-Henning Kamp #define TRUE 1 13677103ea3SPoul-Henning Kamp 1371efe3c6bSEd Schouten static int Reboot = FALSE; 1381efe3c6bSEd Schouten static int howto = RB_AUTOBOOT; 1398fae3551SRodney W. Grimes 1401efe3c6bSEd Schouten static int devfs; 14157622f22SPoul-Henning Kamp 14245cfb1dcSXin LI static void transition(state_t); 14345cfb1dcSXin LI static state_t requested_transition; 144acf0ab06SJilles Tjoelker static state_t current_state = death_single; 1458fae3551SRodney W. Grimes 1464c2c7b2cSEd Schouten static void open_console(void); 14745cfb1dcSXin LI static const char *get_shell(void); 14845cfb1dcSXin LI static void write_stderr(const char *message); 1498fae3551SRodney W. Grimes 1508fae3551SRodney W. Grimes typedef struct init_session { 1518fae3551SRodney W. Grimes pid_t se_process; /* controlling process */ 1528fae3551SRodney W. Grimes time_t se_started; /* used to avoid thrashing */ 1538fae3551SRodney W. Grimes int se_flags; /* status of session */ 1548fae3551SRodney W. Grimes #define SE_SHUTDOWN 0x1 /* session won't be restarted */ 155b0b670eeSAlfred Perlstein #define SE_PRESENT 0x2 /* session is in /etc/ttys */ 156b5df27e2SAndrey A. Chernov int se_nspace; /* spacing count */ 1578fae3551SRodney W. Grimes char *se_device; /* filename of port */ 1588fae3551SRodney W. Grimes char *se_getty; /* what to run on that port */ 159b5df27e2SAndrey A. Chernov char *se_getty_argv_space; /* pre-parsed argument array space */ 1608fae3551SRodney W. Grimes char **se_getty_argv; /* pre-parsed argument array */ 1618fae3551SRodney W. Grimes char *se_window; /* window system (started only once) */ 162b5df27e2SAndrey A. Chernov char *se_window_argv_space; /* pre-parsed argument array space */ 1638fae3551SRodney W. Grimes char **se_window_argv; /* pre-parsed argument array */ 164b5df27e2SAndrey A. Chernov char *se_type; /* default terminal type */ 1658fae3551SRodney W. Grimes struct init_session *se_prev; 1668fae3551SRodney W. Grimes struct init_session *se_next; 1678fae3551SRodney W. Grimes } session_t; 1688fae3551SRodney W. Grimes 16945cfb1dcSXin LI static void free_session(session_t *); 1700b57dd6bSJilles Tjoelker static session_t *new_session(session_t *, struct ttyent *); 17145cfb1dcSXin LI static session_t *sessions; 1728fae3551SRodney W. Grimes 17345cfb1dcSXin LI static char **construct_argv(char *); 17445cfb1dcSXin LI static void start_window_system(session_t *); 17545cfb1dcSXin LI static void collect_child(pid_t); 17645cfb1dcSXin LI static pid_t start_getty(session_t *); 17745cfb1dcSXin LI static void transition_handler(int); 17845cfb1dcSXin LI static void alrm_handler(int); 17945cfb1dcSXin LI static void setsecuritylevel(int); 18045cfb1dcSXin LI static int getsecuritylevel(void); 18145cfb1dcSXin LI static int setupargv(session_t *, struct ttyent *); 182e82d5545SDavid Nugent #ifdef LOGIN_CAP 18345cfb1dcSXin LI static void setprocresources(const char *); 184e82d5545SDavid Nugent #endif 18545cfb1dcSXin LI static int clang; 1868fae3551SRodney W. Grimes 18745cfb1dcSXin LI static int start_session_db(void); 18845cfb1dcSXin LI static void add_session(session_t *); 18945cfb1dcSXin LI static void del_session(session_t *); 19045cfb1dcSXin LI static session_t *find_session(pid_t); 19145cfb1dcSXin LI static DB *session_db; 1928fae3551SRodney W. Grimes 1938fae3551SRodney W. Grimes /* 1948fae3551SRodney W. Grimes * The mother of all processes. 1958fae3551SRodney W. Grimes */ 1968fae3551SRodney W. Grimes int 19773bf18edSWarner Losh main(int argc, char *argv[]) 1988fae3551SRodney W. Grimes { 1991a7bec91SWarner Losh state_t initial_transition = runcom; 2001a7bec91SWarner Losh char kenv_value[PATH_MAX]; 2013f5ac575SEdward Tomasz Napierala int c, error; 2028fae3551SRodney W. Grimes struct sigaction sa; 2038fae3551SRodney W. Grimes sigset_t mask; 2048fae3551SRodney W. Grimes 2058fae3551SRodney W. Grimes /* Dispose of random users. */ 206c5842835SPhilippe Charnier if (getuid() != 0) 207c5842835SPhilippe Charnier errx(1, "%s", strerror(EPERM)); 2088fae3551SRodney W. Grimes 2098fae3551SRodney W. Grimes /* System V users like to reexec init. */ 2101681d659SRuslan Ermilov if (getpid() != 1) { 2111681d659SRuslan Ermilov #ifdef COMPAT_SYSV_INIT 2121681d659SRuslan Ermilov /* So give them what they want */ 2131681d659SRuslan Ermilov if (argc > 1) { 2141681d659SRuslan Ermilov if (strlen(argv[1]) == 1) { 2153d438ad6SDavid E. O'Brien char runlevel = *argv[1]; 2163d438ad6SDavid E. O'Brien int sig; 2178fae3551SRodney W. Grimes 2181681d659SRuslan Ermilov switch (runlevel) { 2191681d659SRuslan Ermilov case '0': /* halt + poweroff */ 2201681d659SRuslan Ermilov sig = SIGUSR2; 2211681d659SRuslan Ermilov break; 2221681d659SRuslan Ermilov case '1': /* single-user */ 2231681d659SRuslan Ermilov sig = SIGTERM; 2241681d659SRuslan Ermilov break; 2251681d659SRuslan Ermilov case '6': /* reboot */ 2261681d659SRuslan Ermilov sig = SIGINT; 2271681d659SRuslan Ermilov break; 2281681d659SRuslan Ermilov case 'c': /* block further logins */ 2291681d659SRuslan Ermilov sig = SIGTSTP; 2301681d659SRuslan Ermilov break; 2311681d659SRuslan Ermilov case 'q': /* rescan /etc/ttys */ 2321681d659SRuslan Ermilov sig = SIGHUP; 2331681d659SRuslan Ermilov break; 2343f5ac575SEdward Tomasz Napierala case 'r': /* remount root */ 2353f5ac575SEdward Tomasz Napierala sig = SIGEMT; 2363f5ac575SEdward Tomasz Napierala break; 2371681d659SRuslan Ermilov default: 2381681d659SRuslan Ermilov goto invalid; 2391681d659SRuslan Ermilov } 2401681d659SRuslan Ermilov kill(1, sig); 2411681d659SRuslan Ermilov _exit(0); 2421681d659SRuslan Ermilov } else 2431681d659SRuslan Ermilov invalid: 2441681d659SRuslan Ermilov errx(1, "invalid run-level ``%s''", argv[1]); 2451681d659SRuslan Ermilov } else 2461681d659SRuslan Ermilov #endif 2471681d659SRuslan Ermilov errx(1, "already running"); 2481681d659SRuslan Ermilov } 2498fae3551SRodney W. Grimes /* 2508fae3551SRodney W. Grimes * Note that this does NOT open a file... 2518fae3551SRodney W. Grimes * Does 'init' deserve its own facility number? 2528fae3551SRodney W. Grimes */ 25306224a94SNeel Natu openlog("init", LOG_CONS, LOG_AUTH); 2548fae3551SRodney W. Grimes 2558fae3551SRodney W. Grimes /* 2568fae3551SRodney W. Grimes * Create an initial session. 2578fae3551SRodney W. Grimes */ 2583f5ac575SEdward Tomasz Napierala if (setsid() < 0 && (errno != EPERM || getsid(0) != 1)) 2598fae3551SRodney W. Grimes warning("initial setsid() failed: %m"); 2608fae3551SRodney W. Grimes 2618fae3551SRodney W. Grimes /* 2628fae3551SRodney W. Grimes * Establish an initial user so that programs running 2638fae3551SRodney W. Grimes * single user do not freak out and die (like passwd). 2648fae3551SRodney W. Grimes */ 2658fae3551SRodney W. Grimes if (setlogin("root") < 0) 2668fae3551SRodney W. Grimes warning("setlogin() failed: %m"); 2678fae3551SRodney W. Grimes 2688fae3551SRodney W. Grimes /* 2698fae3551SRodney W. Grimes * This code assumes that we always get arguments through flags, 2708fae3551SRodney W. Grimes * never through bits set in some random machine register. 2718fae3551SRodney W. Grimes */ 2723f5ac575SEdward Tomasz Napierala while ((c = getopt(argc, argv, "dsfr")) != -1) 2738fae3551SRodney W. Grimes switch (c) { 27457622f22SPoul-Henning Kamp case 'd': 27557622f22SPoul-Henning Kamp devfs = 1; 27657622f22SPoul-Henning Kamp break; 2778fae3551SRodney W. Grimes case 's': 2781a7bec91SWarner Losh initial_transition = single_user; 2798fae3551SRodney W. Grimes break; 2808fae3551SRodney W. Grimes case 'f': 2818fae3551SRodney W. Grimes runcom_mode = FASTBOOT; 2828fae3551SRodney W. Grimes break; 2833f5ac575SEdward Tomasz Napierala case 'r': 2843f5ac575SEdward Tomasz Napierala initial_transition = reroot_phase_two; 2853f5ac575SEdward Tomasz Napierala break; 2868fae3551SRodney W. Grimes default: 2878fae3551SRodney W. Grimes warning("unrecognized flag '-%c'", c); 2888fae3551SRodney W. Grimes break; 2898fae3551SRodney W. Grimes } 2908fae3551SRodney W. Grimes 2918fae3551SRodney W. Grimes if (optind != argc) 2928fae3551SRodney W. Grimes warning("ignoring excess arguments"); 2938fae3551SRodney W. Grimes 2941a7bec91SWarner Losh /* 2951a7bec91SWarner Losh * We catch or block signals rather than ignore them, 2961a7bec91SWarner Losh * so that they get reset on exec. 2971a7bec91SWarner Losh */ 2981a7bec91SWarner Losh handle(badsys, SIGSYS, 0); 299091abe40SDavid E. O'Brien handle(disaster, SIGABRT, SIGFPE, SIGILL, SIGSEGV, SIGBUS, SIGXCPU, 300091abe40SDavid E. O'Brien SIGXFSZ, 0); 3013f5ac575SEdward Tomasz Napierala handle(transition_handler, SIGHUP, SIGINT, SIGEMT, SIGTERM, SIGTSTP, 3023f5ac575SEdward Tomasz Napierala SIGUSR1, SIGUSR2, 0); 3031a7bec91SWarner Losh handle(alrm_handler, SIGALRM, 0); 3041a7bec91SWarner Losh sigfillset(&mask); 3051a7bec91SWarner Losh delset(&mask, SIGABRT, SIGFPE, SIGILL, SIGSEGV, SIGBUS, SIGSYS, 3063f5ac575SEdward Tomasz Napierala SIGXCPU, SIGXFSZ, SIGHUP, SIGINT, SIGEMT, SIGTERM, SIGTSTP, 3073f5ac575SEdward Tomasz Napierala SIGALRM, SIGUSR1, SIGUSR2, 0); 3081a7bec91SWarner Losh sigprocmask(SIG_SETMASK, &mask, (sigset_t *) 0); 3091a7bec91SWarner Losh sigemptyset(&sa.sa_mask); 3101a7bec91SWarner Losh sa.sa_flags = 0; 3111a7bec91SWarner Losh sa.sa_handler = SIG_IGN; 312091abe40SDavid E. O'Brien sigaction(SIGTTIN, &sa, (struct sigaction *)0); 313091abe40SDavid E. O'Brien sigaction(SIGTTOU, &sa, (struct sigaction *)0); 3141a7bec91SWarner Losh 3151a7bec91SWarner Losh /* 3161a7bec91SWarner Losh * Paranoia. 3171a7bec91SWarner Losh */ 3181a7bec91SWarner Losh close(0); 3191a7bec91SWarner Losh close(1); 3201a7bec91SWarner Losh close(2); 3211a7bec91SWarner Losh 3221a7bec91SWarner Losh if (kenv(KENV_GET, "init_script", kenv_value, sizeof(kenv_value)) > 0) { 3231a7bec91SWarner Losh state_func_t next_transition; 3241a7bec91SWarner Losh 3251a7bec91SWarner Losh if ((next_transition = run_script(kenv_value)) != 0) 3261a7bec91SWarner Losh initial_transition = (state_t) next_transition; 3271a7bec91SWarner Losh } 3281a7bec91SWarner Losh 3291a7bec91SWarner Losh if (kenv(KENV_GET, "init_chroot", kenv_value, sizeof(kenv_value)) > 0) { 3301a7bec91SWarner Losh if (chdir(kenv_value) != 0 || chroot(".") != 0) 3311a7bec91SWarner Losh warning("Can't chroot to %s: %m", kenv_value); 3321a7bec91SWarner Losh } 3331a7bec91SWarner Losh 3341a7bec91SWarner Losh /* 3351a7bec91SWarner Losh * Additional check if devfs needs to be mounted: 3361a7bec91SWarner Losh * If "/" and "/dev" have the same device number, 3371a7bec91SWarner Losh * then it hasn't been mounted yet. 3381a7bec91SWarner Losh */ 3391a7bec91SWarner Losh if (!devfs) { 3401a7bec91SWarner Losh struct stat stst; 3411a7bec91SWarner Losh dev_t root_devno; 3421a7bec91SWarner Losh 3431a7bec91SWarner Losh stat("/", &stst); 3441a7bec91SWarner Losh root_devno = stst.st_dev; 3451a7bec91SWarner Losh if (stat("/dev", &stst) != 0) 3461a7bec91SWarner Losh warning("Can't stat /dev: %m"); 3471a7bec91SWarner Losh else if (stst.st_dev == root_devno) 3481a7bec91SWarner Losh devfs++; 3491a7bec91SWarner Losh } 3501a7bec91SWarner Losh 35157622f22SPoul-Henning Kamp if (devfs) { 3521f083b1eSMaxime Henrion struct iovec iov[4]; 353421b0201SPoul-Henning Kamp char *s; 354421b0201SPoul-Henning Kamp int i; 355421b0201SPoul-Henning Kamp 356ab03e6d5SXin LI char _fstype[] = "fstype"; 357ab03e6d5SXin LI char _devfs[] = "devfs"; 358ab03e6d5SXin LI char _fspath[] = "fspath"; 359ab03e6d5SXin LI char _path_dev[]= _PATH_DEV; 360ab03e6d5SXin LI 361ab03e6d5SXin LI iov[0].iov_base = _fstype; 362ab03e6d5SXin LI iov[0].iov_len = sizeof(_fstype); 363ab03e6d5SXin LI iov[1].iov_base = _devfs; 364ab03e6d5SXin LI iov[1].iov_len = sizeof(_devfs); 365ab03e6d5SXin LI iov[2].iov_base = _fspath; 366ab03e6d5SXin LI iov[2].iov_len = sizeof(_fspath); 367421b0201SPoul-Henning Kamp /* 368421b0201SPoul-Henning Kamp * Try to avoid the trailing slash in _PATH_DEV. 369421b0201SPoul-Henning Kamp * Be *very* defensive. 370421b0201SPoul-Henning Kamp */ 371421b0201SPoul-Henning Kamp s = strdup(_PATH_DEV); 372421b0201SPoul-Henning Kamp if (s != NULL) { 373421b0201SPoul-Henning Kamp i = strlen(s); 374421b0201SPoul-Henning Kamp if (i > 0 && s[i - 1] == '/') 375421b0201SPoul-Henning Kamp s[i - 1] = '\0'; 3761f083b1eSMaxime Henrion iov[3].iov_base = s; 3771f083b1eSMaxime Henrion iov[3].iov_len = strlen(s) + 1; 378421b0201SPoul-Henning Kamp } else { 379ab03e6d5SXin LI iov[3].iov_base = _path_dev; 380ab03e6d5SXin LI iov[3].iov_len = sizeof(_path_dev); 38157622f22SPoul-Henning Kamp } 3821f083b1eSMaxime Henrion nmount(iov, 4, 0); 3831f083b1eSMaxime Henrion if (s != NULL) 3841f083b1eSMaxime Henrion free(s); 385421b0201SPoul-Henning Kamp } 38657622f22SPoul-Henning Kamp 3873f5ac575SEdward Tomasz Napierala if (initial_transition != reroot_phase_two) { 3883f5ac575SEdward Tomasz Napierala /* 3893f5ac575SEdward Tomasz Napierala * Unmount reroot leftovers. This runs after init(8) 3903f5ac575SEdward Tomasz Napierala * gets reexecuted after reroot_phase_two() is done. 3913f5ac575SEdward Tomasz Napierala */ 3923f5ac575SEdward Tomasz Napierala error = unmount(_PATH_REROOT, MNT_FORCE); 3933f5ac575SEdward Tomasz Napierala if (error != 0 && errno != EINVAL) 3943f5ac575SEdward Tomasz Napierala warning("Cannot unmount %s: %m", _PATH_REROOT); 3953f5ac575SEdward Tomasz Napierala } 3963f5ac575SEdward Tomasz Napierala 3978fae3551SRodney W. Grimes /* 3988fae3551SRodney W. Grimes * Start the state machine. 3998fae3551SRodney W. Grimes */ 4001a7bec91SWarner Losh transition(initial_transition); 4018fae3551SRodney W. Grimes 4028fae3551SRodney W. Grimes /* 4038fae3551SRodney W. Grimes * Should never reach here. 4048fae3551SRodney W. Grimes */ 4058fae3551SRodney W. Grimes return 1; 4068fae3551SRodney W. Grimes } 4078fae3551SRodney W. Grimes 4088fae3551SRodney W. Grimes /* 4098fae3551SRodney W. Grimes * Associate a function with a signal handler. 4108fae3551SRodney W. Grimes */ 41145cfb1dcSXin LI static void 4128fae3551SRodney W. Grimes handle(sig_t handler, ...) 4138fae3551SRodney W. Grimes { 4148fae3551SRodney W. Grimes int sig; 4158fae3551SRodney W. Grimes struct sigaction sa; 41639034633SJames Raynard sigset_t mask_everything; 4178fae3551SRodney W. Grimes va_list ap; 4188fae3551SRodney W. Grimes va_start(ap, handler); 4198fae3551SRodney W. Grimes 4208fae3551SRodney W. Grimes sa.sa_handler = handler; 4218fae3551SRodney W. Grimes sigfillset(&mask_everything); 4228fae3551SRodney W. Grimes 42330e8350cSBruce Evans while ((sig = va_arg(ap, int)) != 0) { 4248fae3551SRodney W. Grimes sa.sa_mask = mask_everything; 4258fae3551SRodney W. Grimes /* XXX SA_RESTART? */ 4268fae3551SRodney W. Grimes sa.sa_flags = sig == SIGCHLD ? SA_NOCLDSTOP : 0; 4278fae3551SRodney W. Grimes sigaction(sig, &sa, (struct sigaction *) 0); 4288fae3551SRodney W. Grimes } 4298fae3551SRodney W. Grimes va_end(ap); 4308fae3551SRodney W. Grimes } 4318fae3551SRodney W. Grimes 4328fae3551SRodney W. Grimes /* 4338fae3551SRodney W. Grimes * Delete a set of signals from a mask. 4348fae3551SRodney W. Grimes */ 43545cfb1dcSXin LI static void 4368fae3551SRodney W. Grimes delset(sigset_t *maskp, ...) 4378fae3551SRodney W. Grimes { 4388fae3551SRodney W. Grimes int sig; 4398fae3551SRodney W. Grimes va_list ap; 4408fae3551SRodney W. Grimes va_start(ap, maskp); 4418fae3551SRodney W. Grimes 44230e8350cSBruce Evans while ((sig = va_arg(ap, int)) != 0) 4438fae3551SRodney W. Grimes sigdelset(maskp, sig); 4448fae3551SRodney W. Grimes va_end(ap); 4458fae3551SRodney W. Grimes } 4468fae3551SRodney W. Grimes 4478fae3551SRodney W. Grimes /* 4488fae3551SRodney W. Grimes * Log a message and sleep for a while (to give someone an opportunity 4498fae3551SRodney W. Grimes * to read it and to save log or hardcopy output if the problem is chronic). 4508fae3551SRodney W. Grimes * NB: should send a message to the session logger to avoid blocking. 4518fae3551SRodney W. Grimes */ 45245cfb1dcSXin LI static void 4535979df34SKris Kennaway stall(const char *message, ...) 4548fae3551SRodney W. Grimes { 4558fae3551SRodney W. Grimes va_list ap; 4568fae3551SRodney W. Grimes va_start(ap, message); 4578fae3551SRodney W. Grimes 4588fae3551SRodney W. Grimes vsyslog(LOG_ALERT, message, ap); 4598fae3551SRodney W. Grimes va_end(ap); 4608fae3551SRodney W. Grimes sleep(STALL_TIMEOUT); 4618fae3551SRodney W. Grimes } 4628fae3551SRodney W. Grimes 4638fae3551SRodney W. Grimes /* 4648fae3551SRodney W. Grimes * Like stall(), but doesn't sleep. 4658fae3551SRodney W. Grimes * If cpp had variadic macros, the two functions could be #defines for another. 4668fae3551SRodney W. Grimes * NB: should send a message to the session logger to avoid blocking. 4678fae3551SRodney W. Grimes */ 46845cfb1dcSXin LI static void 4695979df34SKris Kennaway warning(const char *message, ...) 4708fae3551SRodney W. Grimes { 4718fae3551SRodney W. Grimes va_list ap; 4728fae3551SRodney W. Grimes va_start(ap, message); 4738fae3551SRodney W. Grimes 4748fae3551SRodney W. Grimes vsyslog(LOG_ALERT, message, ap); 4758fae3551SRodney W. Grimes va_end(ap); 4768fae3551SRodney W. Grimes } 4778fae3551SRodney W. Grimes 4788fae3551SRodney W. Grimes /* 4798fae3551SRodney W. Grimes * Log an emergency message. 4808fae3551SRodney W. Grimes * NB: should send a message to the session logger to avoid blocking. 4818fae3551SRodney W. Grimes */ 48245cfb1dcSXin LI static void 4835979df34SKris Kennaway emergency(const char *message, ...) 4848fae3551SRodney W. Grimes { 4858fae3551SRodney W. Grimes va_list ap; 4868fae3551SRodney W. Grimes va_start(ap, message); 4878fae3551SRodney W. Grimes 4888fae3551SRodney W. Grimes vsyslog(LOG_EMERG, message, ap); 4898fae3551SRodney W. Grimes va_end(ap); 4908fae3551SRodney W. Grimes } 4918fae3551SRodney W. Grimes 4928fae3551SRodney W. Grimes /* 4938fae3551SRodney W. Grimes * Catch a SIGSYS signal. 4948fae3551SRodney W. Grimes * 4958fae3551SRodney W. Grimes * These may arise if a system does not support sysctl. 4968fae3551SRodney W. Grimes * We tolerate up to 25 of these, then throw in the towel. 4978fae3551SRodney W. Grimes */ 49845cfb1dcSXin LI static void 49973bf18edSWarner Losh badsys(int sig) 5008fae3551SRodney W. Grimes { 5018fae3551SRodney W. Grimes static int badcount = 0; 5028fae3551SRodney W. Grimes 5038fae3551SRodney W. Grimes if (badcount++ < 25) 5048fae3551SRodney W. Grimes return; 5058fae3551SRodney W. Grimes disaster(sig); 5068fae3551SRodney W. Grimes } 5078fae3551SRodney W. Grimes 5088fae3551SRodney W. Grimes /* 5098fae3551SRodney W. Grimes * Catch an unexpected signal. 5108fae3551SRodney W. Grimes */ 51145cfb1dcSXin LI static void 51273bf18edSWarner Losh disaster(int sig) 5138fae3551SRodney W. Grimes { 514091abe40SDavid E. O'Brien 5158fae3551SRodney W. Grimes emergency("fatal signal: %s", 5168889c700SDavid Nugent (unsigned)sig < NSIG ? sys_siglist[sig] : "unknown signal"); 5178fae3551SRodney W. Grimes 5188fae3551SRodney W. Grimes sleep(STALL_TIMEOUT); 5198fae3551SRodney W. Grimes _exit(sig); /* reboot */ 5208fae3551SRodney W. Grimes } 5218fae3551SRodney W. Grimes 5228fae3551SRodney W. Grimes /* 5238fae3551SRodney W. Grimes * Get the security level of the kernel. 5248fae3551SRodney W. Grimes */ 52545cfb1dcSXin LI static int 52673bf18edSWarner Losh getsecuritylevel(void) 5278fae3551SRodney W. Grimes { 5288fae3551SRodney W. Grimes #ifdef KERN_SECURELVL 5298fae3551SRodney W. Grimes int name[2], curlevel; 5308fae3551SRodney W. Grimes size_t len; 5318fae3551SRodney W. Grimes 5328fae3551SRodney W. Grimes name[0] = CTL_KERN; 5338fae3551SRodney W. Grimes name[1] = KERN_SECURELVL; 5348fae3551SRodney W. Grimes len = sizeof curlevel; 5358fae3551SRodney W. Grimes if (sysctl(name, 2, &curlevel, &len, NULL, 0) == -1) { 5368fae3551SRodney W. Grimes emergency("cannot get kernel security level: %s", 5378fae3551SRodney W. Grimes strerror(errno)); 5388fae3551SRodney W. Grimes return (-1); 5398fae3551SRodney W. Grimes } 5408fae3551SRodney W. Grimes return (curlevel); 5418fae3551SRodney W. Grimes #else 5428fae3551SRodney W. Grimes return (-1); 5438fae3551SRodney W. Grimes #endif 5448fae3551SRodney W. Grimes } 5458fae3551SRodney W. Grimes 5468fae3551SRodney W. Grimes /* 5478fae3551SRodney W. Grimes * Set the security level of the kernel. 5488fae3551SRodney W. Grimes */ 54945cfb1dcSXin LI static void 55073bf18edSWarner Losh setsecuritylevel(int newlevel) 5518fae3551SRodney W. Grimes { 5528fae3551SRodney W. Grimes #ifdef KERN_SECURELVL 5538fae3551SRodney W. Grimes int name[2], curlevel; 5548fae3551SRodney W. Grimes 5558fae3551SRodney W. Grimes curlevel = getsecuritylevel(); 5568fae3551SRodney W. Grimes if (newlevel == curlevel) 5578fae3551SRodney W. Grimes return; 5588fae3551SRodney W. Grimes name[0] = CTL_KERN; 5598fae3551SRodney W. Grimes name[1] = KERN_SECURELVL; 5608fae3551SRodney W. Grimes if (sysctl(name, 2, NULL, NULL, &newlevel, sizeof newlevel) == -1) { 5618fae3551SRodney W. Grimes emergency( 5628fae3551SRodney W. Grimes "cannot change kernel security level from %d to %d: %s", 5638fae3551SRodney W. Grimes curlevel, newlevel, strerror(errno)); 5648fae3551SRodney W. Grimes return; 5658fae3551SRodney W. Grimes } 5668fae3551SRodney W. Grimes #ifdef SECURE 5678fae3551SRodney W. Grimes warning("kernel security level changed from %d to %d", 5688fae3551SRodney W. Grimes curlevel, newlevel); 5698fae3551SRodney W. Grimes #endif 5708fae3551SRodney W. Grimes #endif 5718fae3551SRodney W. Grimes } 5728fae3551SRodney W. Grimes 5738fae3551SRodney W. Grimes /* 5748fae3551SRodney W. Grimes * Change states in the finite state machine. 5758fae3551SRodney W. Grimes * The initial state is passed as an argument. 5768fae3551SRodney W. Grimes */ 57745cfb1dcSXin LI static void 57873bf18edSWarner Losh transition(state_t s) 5798fae3551SRodney W. Grimes { 580091abe40SDavid E. O'Brien 581acf0ab06SJilles Tjoelker current_state = s; 5828fae3551SRodney W. Grimes for (;;) 583acf0ab06SJilles Tjoelker current_state = (state_t) (*current_state)(); 5848fae3551SRodney W. Grimes } 5858fae3551SRodney W. Grimes 5868fae3551SRodney W. Grimes /* 5878fae3551SRodney W. Grimes * Start a session and allocate a controlling terminal. 5888fae3551SRodney W. Grimes * Only called by children of init after forking. 5898fae3551SRodney W. Grimes */ 59045cfb1dcSXin LI static void 5914c2c7b2cSEd Schouten open_console(void) 5928fae3551SRodney W. Grimes { 5938fae3551SRodney W. Grimes int fd; 5948fae3551SRodney W. Grimes 5956ee5808bSEd Schouten /* 5966ee5808bSEd Schouten * Try to open /dev/console. Open the device with O_NONBLOCK to 5976ee5808bSEd Schouten * prevent potential blocking on a carrier. 5986ee5808bSEd Schouten */ 5994c2c7b2cSEd Schouten revoke(_PATH_CONSOLE); 6004c2c7b2cSEd Schouten if ((fd = open(_PATH_CONSOLE, O_RDWR | O_NONBLOCK)) != -1) { 6016ee5808bSEd Schouten (void)fcntl(fd, F_SETFL, fcntl(fd, F_GETFL) & ~O_NONBLOCK); 6024c2c7b2cSEd Schouten if (login_tty(fd) == 0) 6034c2c7b2cSEd Schouten return; 6044c2c7b2cSEd Schouten close(fd); 6054c2c7b2cSEd Schouten } 6064c2c7b2cSEd Schouten 6074c2c7b2cSEd Schouten /* No luck. Log output to file if possible. */ 6084c2c7b2cSEd Schouten if ((fd = open(_PATH_DEVNULL, O_RDWR)) == -1) { 6094c2c7b2cSEd Schouten stall("cannot open null device."); 6108fae3551SRodney W. Grimes _exit(1); 6118fae3551SRodney W. Grimes } 6124c2c7b2cSEd Schouten if (fd != STDIN_FILENO) { 6134c2c7b2cSEd Schouten dup2(fd, STDIN_FILENO); 6144c2c7b2cSEd Schouten close(fd); 6158fae3551SRodney W. Grimes } 6164c2c7b2cSEd Schouten fd = open(_PATH_INITLOG, O_WRONLY | O_APPEND | O_CREAT, 0644); 6174c2c7b2cSEd Schouten if (fd == -1) 6184c2c7b2cSEd Schouten dup2(STDIN_FILENO, STDOUT_FILENO); 6194c2c7b2cSEd Schouten else if (fd != STDOUT_FILENO) { 6204c2c7b2cSEd Schouten dup2(fd, STDOUT_FILENO); 6214c2c7b2cSEd Schouten close(fd); 6224c2c7b2cSEd Schouten } 6234c2c7b2cSEd Schouten dup2(STDOUT_FILENO, STDERR_FILENO); 6248fae3551SRodney W. Grimes } 6258fae3551SRodney W. Grimes 62645cfb1dcSXin LI static const char * 6271a7bec91SWarner Losh get_shell(void) 6281a7bec91SWarner Losh { 6291a7bec91SWarner Losh static char kenv_value[PATH_MAX]; 6301a7bec91SWarner Losh 6311a7bec91SWarner Losh if (kenv(KENV_GET, "init_shell", kenv_value, sizeof(kenv_value)) > 0) 6321a7bec91SWarner Losh return kenv_value; 6331a7bec91SWarner Losh else 6341a7bec91SWarner Losh return _PATH_BSHELL; 6351a7bec91SWarner Losh } 6361a7bec91SWarner Losh 63745cfb1dcSXin LI static void 6381a7bec91SWarner Losh write_stderr(const char *message) 6391a7bec91SWarner Losh { 640091abe40SDavid E. O'Brien 6411a7bec91SWarner Losh write(STDERR_FILENO, message, strlen(message)); 6421a7bec91SWarner Losh } 6431a7bec91SWarner Losh 6443f5ac575SEdward Tomasz Napierala static int 6453f5ac575SEdward Tomasz Napierala read_file(const char *path, void **bufp, size_t *bufsizep) 6463f5ac575SEdward Tomasz Napierala { 6473f5ac575SEdward Tomasz Napierala struct stat sb; 6483f5ac575SEdward Tomasz Napierala size_t bufsize; 6493f5ac575SEdward Tomasz Napierala void *buf; 6503f5ac575SEdward Tomasz Napierala ssize_t nbytes; 6513f5ac575SEdward Tomasz Napierala int error, fd; 6523f5ac575SEdward Tomasz Napierala 6533f5ac575SEdward Tomasz Napierala fd = open(path, O_RDONLY); 6543f5ac575SEdward Tomasz Napierala if (fd < 0) { 6553f5ac575SEdward Tomasz Napierala emergency("%s: %s", path, strerror(errno)); 6563f5ac575SEdward Tomasz Napierala return (-1); 6573f5ac575SEdward Tomasz Napierala } 6583f5ac575SEdward Tomasz Napierala 6593f5ac575SEdward Tomasz Napierala error = fstat(fd, &sb); 6603f5ac575SEdward Tomasz Napierala if (error != 0) { 6613f5ac575SEdward Tomasz Napierala emergency("fstat: %s", strerror(errno)); 662*b9124fc3SEdward Tomasz Napierala close(fd); 6633f5ac575SEdward Tomasz Napierala return (error); 6643f5ac575SEdward Tomasz Napierala } 6653f5ac575SEdward Tomasz Napierala 6663f5ac575SEdward Tomasz Napierala bufsize = sb.st_size; 6673f5ac575SEdward Tomasz Napierala buf = malloc(bufsize); 6683f5ac575SEdward Tomasz Napierala if (buf == NULL) { 6693f5ac575SEdward Tomasz Napierala emergency("malloc: %s", strerror(errno)); 670*b9124fc3SEdward Tomasz Napierala close(fd); 6713f5ac575SEdward Tomasz Napierala return (error); 6723f5ac575SEdward Tomasz Napierala } 6733f5ac575SEdward Tomasz Napierala 6743f5ac575SEdward Tomasz Napierala nbytes = read(fd, buf, bufsize); 6753f5ac575SEdward Tomasz Napierala if (nbytes != (ssize_t)bufsize) { 6763f5ac575SEdward Tomasz Napierala emergency("read: %s", strerror(errno)); 677*b9124fc3SEdward Tomasz Napierala close(fd); 6783f5ac575SEdward Tomasz Napierala free(buf); 6793f5ac575SEdward Tomasz Napierala return (error); 6803f5ac575SEdward Tomasz Napierala } 6813f5ac575SEdward Tomasz Napierala 6823f5ac575SEdward Tomasz Napierala error = close(fd); 6833f5ac575SEdward Tomasz Napierala if (error != 0) { 6843f5ac575SEdward Tomasz Napierala emergency("close: %s", strerror(errno)); 6853f5ac575SEdward Tomasz Napierala free(buf); 6863f5ac575SEdward Tomasz Napierala return (error); 6873f5ac575SEdward Tomasz Napierala } 6883f5ac575SEdward Tomasz Napierala 6893f5ac575SEdward Tomasz Napierala *bufp = buf; 6903f5ac575SEdward Tomasz Napierala *bufsizep = bufsize; 6913f5ac575SEdward Tomasz Napierala 6923f5ac575SEdward Tomasz Napierala return (0); 6933f5ac575SEdward Tomasz Napierala } 6943f5ac575SEdward Tomasz Napierala 6953f5ac575SEdward Tomasz Napierala static int 696*b9124fc3SEdward Tomasz Napierala create_file(const char *path, const void *buf, size_t bufsize) 6973f5ac575SEdward Tomasz Napierala { 6983f5ac575SEdward Tomasz Napierala ssize_t nbytes; 6993f5ac575SEdward Tomasz Napierala int error, fd; 7003f5ac575SEdward Tomasz Napierala 7013f5ac575SEdward Tomasz Napierala fd = open(path, O_WRONLY | O_CREAT | O_EXCL, 0700); 7023f5ac575SEdward Tomasz Napierala if (fd < 0) { 7033f5ac575SEdward Tomasz Napierala emergency("%s: %s", path, strerror(errno)); 7043f5ac575SEdward Tomasz Napierala return (-1); 7053f5ac575SEdward Tomasz Napierala } 7063f5ac575SEdward Tomasz Napierala 7073f5ac575SEdward Tomasz Napierala nbytes = write(fd, buf, bufsize); 7083f5ac575SEdward Tomasz Napierala if (nbytes != (ssize_t)bufsize) { 7093f5ac575SEdward Tomasz Napierala emergency("write: %s", strerror(errno)); 710*b9124fc3SEdward Tomasz Napierala close(fd); 7113f5ac575SEdward Tomasz Napierala return (-1); 7123f5ac575SEdward Tomasz Napierala } 7133f5ac575SEdward Tomasz Napierala 7143f5ac575SEdward Tomasz Napierala error = close(fd); 7153f5ac575SEdward Tomasz Napierala if (error != 0) { 7163f5ac575SEdward Tomasz Napierala emergency("close: %s", strerror(errno)); 7173f5ac575SEdward Tomasz Napierala return (-1); 7183f5ac575SEdward Tomasz Napierala } 7193f5ac575SEdward Tomasz Napierala 7203f5ac575SEdward Tomasz Napierala return (0); 7213f5ac575SEdward Tomasz Napierala } 7223f5ac575SEdward Tomasz Napierala 7233f5ac575SEdward Tomasz Napierala static int 7243f5ac575SEdward Tomasz Napierala mount_tmpfs(const char *fspath) 7253f5ac575SEdward Tomasz Napierala { 7263f5ac575SEdward Tomasz Napierala struct iovec *iov; 7273f5ac575SEdward Tomasz Napierala char errmsg[255]; 7283f5ac575SEdward Tomasz Napierala int error, iovlen; 7293f5ac575SEdward Tomasz Napierala 7303f5ac575SEdward Tomasz Napierala iov = NULL; 7313f5ac575SEdward Tomasz Napierala iovlen = 0; 7323f5ac575SEdward Tomasz Napierala memset(errmsg, 0, sizeof(errmsg)); 7333f5ac575SEdward Tomasz Napierala build_iovec(&iov, &iovlen, "fstype", 7343f5ac575SEdward Tomasz Napierala __DECONST(void *, "tmpfs"), (size_t)-1); 7353f5ac575SEdward Tomasz Napierala build_iovec(&iov, &iovlen, "fspath", 7363f5ac575SEdward Tomasz Napierala __DECONST(void *, fspath), (size_t)-1); 7373f5ac575SEdward Tomasz Napierala build_iovec(&iov, &iovlen, "errmsg", 7383f5ac575SEdward Tomasz Napierala errmsg, sizeof(errmsg)); 7393f5ac575SEdward Tomasz Napierala 7403f5ac575SEdward Tomasz Napierala error = nmount(iov, iovlen, 0); 7413f5ac575SEdward Tomasz Napierala if (error != 0) { 7423f5ac575SEdward Tomasz Napierala if (*errmsg != '\0') { 7433f5ac575SEdward Tomasz Napierala emergency("cannot mount tmpfs on %s: %s: %s", 7443f5ac575SEdward Tomasz Napierala fspath, errmsg, strerror(errno)); 7453f5ac575SEdward Tomasz Napierala } else { 7463f5ac575SEdward Tomasz Napierala emergency("cannot mount tmpfs on %s: %s", 7473f5ac575SEdward Tomasz Napierala fspath, strerror(errno)); 7483f5ac575SEdward Tomasz Napierala } 7493f5ac575SEdward Tomasz Napierala return (error); 7503f5ac575SEdward Tomasz Napierala } 7513f5ac575SEdward Tomasz Napierala return (0); 7523f5ac575SEdward Tomasz Napierala } 7533f5ac575SEdward Tomasz Napierala 7543f5ac575SEdward Tomasz Napierala static state_func_t 7553f5ac575SEdward Tomasz Napierala reroot(void) 7563f5ac575SEdward Tomasz Napierala { 7573f5ac575SEdward Tomasz Napierala void *buf; 7583f5ac575SEdward Tomasz Napierala char init_path[PATH_MAX]; 7593f5ac575SEdward Tomasz Napierala size_t bufsize, init_path_len; 7603f5ac575SEdward Tomasz Napierala int error, name[4]; 7613f5ac575SEdward Tomasz Napierala 762*b9124fc3SEdward Tomasz Napierala buf = NULL; 763*b9124fc3SEdward Tomasz Napierala bufsize = 0; 764*b9124fc3SEdward Tomasz Napierala 7653f5ac575SEdward Tomasz Napierala name[0] = CTL_KERN; 7663f5ac575SEdward Tomasz Napierala name[1] = KERN_PROC; 7673f5ac575SEdward Tomasz Napierala name[2] = KERN_PROC_PATHNAME; 7683f5ac575SEdward Tomasz Napierala name[3] = -1; 7693f5ac575SEdward Tomasz Napierala init_path_len = sizeof(init_path); 7703f5ac575SEdward Tomasz Napierala error = sysctl(name, 4, init_path, &init_path_len, NULL, 0); 7713f5ac575SEdward Tomasz Napierala if (error != 0) { 7723f5ac575SEdward Tomasz Napierala emergency("failed to get kern.proc.pathname: %s", 7733f5ac575SEdward Tomasz Napierala strerror(errno)); 7743f5ac575SEdward Tomasz Napierala goto out; 7753f5ac575SEdward Tomasz Napierala } 7763f5ac575SEdward Tomasz Napierala 7773f5ac575SEdward Tomasz Napierala revoke_ttys(); 7783f5ac575SEdward Tomasz Napierala runshutdown(); 7793f5ac575SEdward Tomasz Napierala 7803f5ac575SEdward Tomasz Napierala /* 7813f5ac575SEdward Tomasz Napierala * Make sure nobody can interfere with our scheme. 7823f5ac575SEdward Tomasz Napierala */ 7833f5ac575SEdward Tomasz Napierala error = kill(-1, SIGKILL); 7843f5ac575SEdward Tomasz Napierala if (error != 0) { 7853f5ac575SEdward Tomasz Napierala emergency("kill(2) failed: %s", strerror(errno)); 7863f5ac575SEdward Tomasz Napierala goto out; 7873f5ac575SEdward Tomasz Napierala } 7883f5ac575SEdward Tomasz Napierala 7893f5ac575SEdward Tomasz Napierala /* 7903f5ac575SEdward Tomasz Napierala * Copy the init binary into tmpfs, so that we can unmount 7913f5ac575SEdward Tomasz Napierala * the old rootfs without committing suicide. 7923f5ac575SEdward Tomasz Napierala */ 7933f5ac575SEdward Tomasz Napierala error = read_file(init_path, &buf, &bufsize); 7943f5ac575SEdward Tomasz Napierala if (error != 0) 7953f5ac575SEdward Tomasz Napierala goto out; 7963f5ac575SEdward Tomasz Napierala error = mount_tmpfs(_PATH_REROOT); 7973f5ac575SEdward Tomasz Napierala if (error != 0) 7983f5ac575SEdward Tomasz Napierala goto out; 7993f5ac575SEdward Tomasz Napierala error = create_file(_PATH_REROOT_INIT, buf, bufsize); 8003f5ac575SEdward Tomasz Napierala if (error != 0) 8013f5ac575SEdward Tomasz Napierala goto out; 8023f5ac575SEdward Tomasz Napierala 8033f5ac575SEdward Tomasz Napierala /* 8043f5ac575SEdward Tomasz Napierala * Execute the temporary init. 8053f5ac575SEdward Tomasz Napierala */ 8063f5ac575SEdward Tomasz Napierala execl(_PATH_REROOT_INIT, _PATH_REROOT_INIT, "-r", NULL); 8073f5ac575SEdward Tomasz Napierala emergency("cannot exec %s: %s", _PATH_REROOT_INIT, strerror(errno)); 8083f5ac575SEdward Tomasz Napierala 8093f5ac575SEdward Tomasz Napierala out: 8103f5ac575SEdward Tomasz Napierala emergency("reroot failed; going to single user mode"); 811*b9124fc3SEdward Tomasz Napierala free(buf); 8123f5ac575SEdward Tomasz Napierala return (state_func_t) single_user; 8133f5ac575SEdward Tomasz Napierala } 8143f5ac575SEdward Tomasz Napierala 8153f5ac575SEdward Tomasz Napierala static state_func_t 8163f5ac575SEdward Tomasz Napierala reroot_phase_two(void) 8173f5ac575SEdward Tomasz Napierala { 8183f5ac575SEdward Tomasz Napierala char init_path[PATH_MAX], *path, *path_component; 8193f5ac575SEdward Tomasz Napierala size_t init_path_len; 8203f5ac575SEdward Tomasz Napierala int nbytes, error; 8213f5ac575SEdward Tomasz Napierala 8223f5ac575SEdward Tomasz Napierala /* 8233f5ac575SEdward Tomasz Napierala * Ask the kernel to mount the new rootfs. 8243f5ac575SEdward Tomasz Napierala */ 8253f5ac575SEdward Tomasz Napierala error = reboot(RB_REROOT); 8263f5ac575SEdward Tomasz Napierala if (error != 0) { 8273f5ac575SEdward Tomasz Napierala emergency("RB_REBOOT failed: %s", strerror(errno)); 8283f5ac575SEdward Tomasz Napierala goto out; 8293f5ac575SEdward Tomasz Napierala } 8303f5ac575SEdward Tomasz Napierala 8313f5ac575SEdward Tomasz Napierala /* 8323f5ac575SEdward Tomasz Napierala * Figure out where the destination init(8) binary is. Note that 8333f5ac575SEdward Tomasz Napierala * the path could be different than what we've started with. Use 8343f5ac575SEdward Tomasz Napierala * the value from kenv, if set, or the one from sysctl otherwise. 8353f5ac575SEdward Tomasz Napierala * The latter defaults to a hardcoded value, but can be overridden 8363f5ac575SEdward Tomasz Napierala * by a build time option. 8373f5ac575SEdward Tomasz Napierala */ 8383f5ac575SEdward Tomasz Napierala nbytes = kenv(KENV_GET, "init_path", init_path, sizeof(init_path)); 8393f5ac575SEdward Tomasz Napierala if (nbytes <= 0) { 8403f5ac575SEdward Tomasz Napierala init_path_len = sizeof(init_path); 8413f5ac575SEdward Tomasz Napierala error = sysctlbyname("kern.init_path", 8423f5ac575SEdward Tomasz Napierala init_path, &init_path_len, NULL, 0); 8433f5ac575SEdward Tomasz Napierala if (error != 0) { 8443f5ac575SEdward Tomasz Napierala emergency("failed to retrieve kern.init_path: %s", 8453f5ac575SEdward Tomasz Napierala strerror(errno)); 8463f5ac575SEdward Tomasz Napierala goto out; 8473f5ac575SEdward Tomasz Napierala } 8483f5ac575SEdward Tomasz Napierala } 8493f5ac575SEdward Tomasz Napierala 8503f5ac575SEdward Tomasz Napierala /* 8513f5ac575SEdward Tomasz Napierala * Repeat the init search logic from sys/kern/init_path.c 8523f5ac575SEdward Tomasz Napierala */ 8533f5ac575SEdward Tomasz Napierala path_component = init_path; 8543f5ac575SEdward Tomasz Napierala while ((path = strsep(&path_component, ":")) != NULL) { 8553f5ac575SEdward Tomasz Napierala /* 8563f5ac575SEdward Tomasz Napierala * Execute init(8) from the new rootfs. 8573f5ac575SEdward Tomasz Napierala */ 8583f5ac575SEdward Tomasz Napierala execl(path, path, NULL); 8593f5ac575SEdward Tomasz Napierala } 8603f5ac575SEdward Tomasz Napierala emergency("cannot exec init from %s: %s", init_path, strerror(errno)); 8613f5ac575SEdward Tomasz Napierala 8623f5ac575SEdward Tomasz Napierala out: 8633f5ac575SEdward Tomasz Napierala emergency("reroot failed; going to single user mode"); 8643f5ac575SEdward Tomasz Napierala return (state_func_t) single_user; 8653f5ac575SEdward Tomasz Napierala } 8663f5ac575SEdward Tomasz Napierala 8678fae3551SRodney W. Grimes /* 8688fae3551SRodney W. Grimes * Bring the system up single user. 8698fae3551SRodney W. Grimes */ 87045cfb1dcSXin LI static state_func_t 87173bf18edSWarner Losh single_user(void) 8728fae3551SRodney W. Grimes { 8738fae3551SRodney W. Grimes pid_t pid, wpid; 8748fae3551SRodney W. Grimes int status; 8758fae3551SRodney W. Grimes sigset_t mask; 8761a7bec91SWarner Losh const char *shell; 8778fae3551SRodney W. Grimes char *argv[2]; 8788fae3551SRodney W. Grimes #ifdef SECURE 8798fae3551SRodney W. Grimes struct ttyent *typ; 8808fae3551SRodney W. Grimes struct passwd *pp; 8818fae3551SRodney W. Grimes static const char banner[] = 8828fae3551SRodney W. Grimes "Enter root password, or ^D to go multi-user\n"; 8838fae3551SRodney W. Grimes char *clear, *password; 8848fae3551SRodney W. Grimes #endif 88563322c28SPoul-Henning Kamp #ifdef DEBUGSHELL 88663322c28SPoul-Henning Kamp char altshell[128]; 88763322c28SPoul-Henning Kamp #endif 8888fae3551SRodney W. Grimes 889db8ad19dSJordan K. Hubbard if (Reboot) { 890a0a549c7SRuslan Ermilov /* Instead of going single user, let's reboot the machine */ 891e460cfd3SNate Williams sync(); 892a0a549c7SRuslan Ermilov reboot(howto); 893e460cfd3SNate Williams _exit(0); 894e460cfd3SNate Williams } 895e460cfd3SNate Williams 8961a7bec91SWarner Losh shell = get_shell(); 8971a7bec91SWarner Losh 8988fae3551SRodney W. Grimes if ((pid = fork()) == 0) { 8998fae3551SRodney W. Grimes /* 9008fae3551SRodney W. Grimes * Start the single user session. 9018fae3551SRodney W. Grimes */ 9024c2c7b2cSEd Schouten open_console(); 9038fae3551SRodney W. Grimes 9048fae3551SRodney W. Grimes #ifdef SECURE 9058fae3551SRodney W. Grimes /* 9068fae3551SRodney W. Grimes * Check the root password. 9078fae3551SRodney W. Grimes * We don't care if the console is 'on' by default; 9088fae3551SRodney W. Grimes * it's the only tty that can be 'off' and 'secure'. 9098fae3551SRodney W. Grimes */ 9108fae3551SRodney W. Grimes typ = getttynam("console"); 9118fae3551SRodney W. Grimes pp = getpwnam("root"); 912a69497d7SMatthew Dillon if (typ && (typ->ty_status & TTY_SECURE) == 0 && 913a69497d7SMatthew Dillon pp && *pp->pw_passwd) { 9141a7bec91SWarner Losh write_stderr(banner); 9158fae3551SRodney W. Grimes for (;;) { 9168fae3551SRodney W. Grimes clear = getpass("Password:"); 9178fae3551SRodney W. Grimes if (clear == 0 || *clear == '\0') 9188fae3551SRodney W. Grimes _exit(0); 9198fae3551SRodney W. Grimes password = crypt(clear, pp->pw_passwd); 9208fae3551SRodney W. Grimes bzero(clear, _PASSWORD_LEN); 92129dcf726SKevin Lo if (password == NULL || 92229dcf726SKevin Lo strcmp(password, pp->pw_passwd) == 0) 9238fae3551SRodney W. Grimes break; 9248fae3551SRodney W. Grimes warning("single-user login failed\n"); 9258fae3551SRodney W. Grimes } 9268fae3551SRodney W. Grimes } 9278fae3551SRodney W. Grimes endttyent(); 9288fae3551SRodney W. Grimes endpwent(); 9298fae3551SRodney W. Grimes #endif /* SECURE */ 9308fae3551SRodney W. Grimes 9318fae3551SRodney W. Grimes #ifdef DEBUGSHELL 9328fae3551SRodney W. Grimes { 93363322c28SPoul-Henning Kamp char *cp = altshell; 9348fae3551SRodney W. Grimes int num; 9358fae3551SRodney W. Grimes 9361a7bec91SWarner Losh #define SHREQUEST "Enter full pathname of shell or RETURN for " 9371a7bec91SWarner Losh write_stderr(SHREQUEST); 9381a7bec91SWarner Losh write_stderr(shell); 9391a7bec91SWarner Losh write_stderr(": "); 9408fae3551SRodney W. Grimes while ((num = read(STDIN_FILENO, cp, 1)) != -1 && 9418fae3551SRodney W. Grimes num != 0 && *cp != '\n' && cp < &altshell[127]) 9428fae3551SRodney W. Grimes cp++; 9438fae3551SRodney W. Grimes *cp = '\0'; 9448fae3551SRodney W. Grimes if (altshell[0] != '\0') 9458fae3551SRodney W. Grimes shell = altshell; 9468fae3551SRodney W. Grimes } 9478fae3551SRodney W. Grimes #endif /* DEBUGSHELL */ 9488fae3551SRodney W. Grimes 9498fae3551SRodney W. Grimes /* 9508fae3551SRodney W. Grimes * Unblock signals. 9518fae3551SRodney W. Grimes * We catch all the interesting ones, 9528fae3551SRodney W. Grimes * and those are reset to SIG_DFL on exec. 9538fae3551SRodney W. Grimes */ 9548fae3551SRodney W. Grimes sigemptyset(&mask); 9558fae3551SRodney W. Grimes sigprocmask(SIG_SETMASK, &mask, (sigset_t *) 0); 9568fae3551SRodney W. Grimes 9578fae3551SRodney W. Grimes /* 9588fae3551SRodney W. Grimes * Fire off a shell. 9598fae3551SRodney W. Grimes * If the default one doesn't work, try the Bourne shell. 9608fae3551SRodney W. Grimes */ 961ab03e6d5SXin LI 962ab03e6d5SXin LI char name[] = "-sh"; 963ab03e6d5SXin LI 964ab03e6d5SXin LI argv[0] = name; 9658fae3551SRodney W. Grimes argv[1] = 0; 9668fae3551SRodney W. Grimes execv(shell, argv); 9678fae3551SRodney W. Grimes emergency("can't exec %s for single user: %m", shell); 9688fae3551SRodney W. Grimes execv(_PATH_BSHELL, argv); 9698fae3551SRodney W. Grimes emergency("can't exec %s for single user: %m", _PATH_BSHELL); 9708fae3551SRodney W. Grimes sleep(STALL_TIMEOUT); 9718fae3551SRodney W. Grimes _exit(1); 9728fae3551SRodney W. Grimes } 9738fae3551SRodney W. Grimes 9748fae3551SRodney W. Grimes if (pid == -1) { 9758fae3551SRodney W. Grimes /* 9768fae3551SRodney W. Grimes * We are seriously hosed. Do our best. 9778fae3551SRodney W. Grimes */ 9788fae3551SRodney W. Grimes emergency("can't fork single-user shell, trying again"); 9798fae3551SRodney W. Grimes while (waitpid(-1, (int *) 0, WNOHANG) > 0) 9808fae3551SRodney W. Grimes continue; 9818fae3551SRodney W. Grimes return (state_func_t) single_user; 9828fae3551SRodney W. Grimes } 9838fae3551SRodney W. Grimes 9848fae3551SRodney W. Grimes requested_transition = 0; 9858fae3551SRodney W. Grimes do { 9868fae3551SRodney W. Grimes if ((wpid = waitpid(-1, &status, WUNTRACED)) != -1) 9878fae3551SRodney W. Grimes collect_child(wpid); 9888fae3551SRodney W. Grimes if (wpid == -1) { 9898fae3551SRodney W. Grimes if (errno == EINTR) 9908fae3551SRodney W. Grimes continue; 9918fae3551SRodney W. Grimes warning("wait for single-user shell failed: %m; restarting"); 9928fae3551SRodney W. Grimes return (state_func_t) single_user; 9938fae3551SRodney W. Grimes } 9948fae3551SRodney W. Grimes if (wpid == pid && WIFSTOPPED(status)) { 9958fae3551SRodney W. Grimes warning("init: shell stopped, restarting\n"); 9968fae3551SRodney W. Grimes kill(pid, SIGCONT); 9978fae3551SRodney W. Grimes wpid = -1; 9988fae3551SRodney W. Grimes } 9998fae3551SRodney W. Grimes } while (wpid != pid && !requested_transition); 10008fae3551SRodney W. Grimes 10018fae3551SRodney W. Grimes if (requested_transition) 10028fae3551SRodney W. Grimes return (state_func_t) requested_transition; 10038fae3551SRodney W. Grimes 10048fae3551SRodney W. Grimes if (!WIFEXITED(status)) { 10058fae3551SRodney W. Grimes if (WTERMSIG(status) == SIGKILL) { 10068fae3551SRodney W. Grimes /* 10078fae3551SRodney W. Grimes * reboot(8) killed shell? 10088fae3551SRodney W. Grimes */ 10098fae3551SRodney W. Grimes warning("single user shell terminated."); 10108fae3551SRodney W. Grimes sleep(STALL_TIMEOUT); 10118fae3551SRodney W. Grimes _exit(0); 10128fae3551SRodney W. Grimes } else { 10138fae3551SRodney W. Grimes warning("single user shell terminated, restarting"); 10148fae3551SRodney W. Grimes return (state_func_t) single_user; 10158fae3551SRodney W. Grimes } 10168fae3551SRodney W. Grimes } 10178fae3551SRodney W. Grimes 10188fae3551SRodney W. Grimes runcom_mode = FASTBOOT; 10198fae3551SRodney W. Grimes return (state_func_t) runcom; 10208fae3551SRodney W. Grimes } 10218fae3551SRodney W. Grimes 10228fae3551SRodney W. Grimes /* 10238fae3551SRodney W. Grimes * Run the system startup script. 10248fae3551SRodney W. Grimes */ 102545cfb1dcSXin LI static state_func_t 102673bf18edSWarner Losh runcom(void) 10278fae3551SRodney W. Grimes { 10281a7bec91SWarner Losh state_func_t next_transition; 10291a7bec91SWarner Losh 10301a7bec91SWarner Losh if ((next_transition = run_script(_PATH_RUNCOM)) != 0) 10311a7bec91SWarner Losh return next_transition; 10321a7bec91SWarner Losh 10331a7bec91SWarner Losh runcom_mode = AUTOBOOT; /* the default */ 10341a7bec91SWarner Losh return (state_func_t) read_ttys; 10351a7bec91SWarner Losh } 10361a7bec91SWarner Losh 10371a7bec91SWarner Losh /* 10381a7bec91SWarner Losh * Run a shell script. 10391a7bec91SWarner Losh * Returns 0 on success, otherwise the next transition to enter: 10401a7bec91SWarner Losh * - single_user if fork/execv/waitpid failed, or if the script 10411a7bec91SWarner Losh * terminated with a signal or exit code != 0. 1042acf0ab06SJilles Tjoelker * - death_single if a SIGTERM was delivered to init(8). 10431a7bec91SWarner Losh */ 104445cfb1dcSXin LI static state_func_t 10451a7bec91SWarner Losh run_script(const char *script) 10461a7bec91SWarner Losh { 10478fae3551SRodney W. Grimes pid_t pid, wpid; 10488fae3551SRodney W. Grimes int status; 10498fae3551SRodney W. Grimes char *argv[4]; 10501a7bec91SWarner Losh const char *shell; 10518fae3551SRodney W. Grimes struct sigaction sa; 10528fae3551SRodney W. Grimes 10531a7bec91SWarner Losh shell = get_shell(); 10541a7bec91SWarner Losh 10558fae3551SRodney W. Grimes if ((pid = fork()) == 0) { 10568fae3551SRodney W. Grimes sigemptyset(&sa.sa_mask); 10578fae3551SRodney W. Grimes sa.sa_flags = 0; 10588fae3551SRodney W. Grimes sa.sa_handler = SIG_IGN; 1059091abe40SDavid E. O'Brien sigaction(SIGTSTP, &sa, (struct sigaction *)0); 1060091abe40SDavid E. O'Brien sigaction(SIGHUP, &sa, (struct sigaction *)0); 10618fae3551SRodney W. Grimes 10624c2c7b2cSEd Schouten open_console(); 10638fae3551SRodney W. Grimes 1064ab03e6d5SXin LI char _sh[] = "sh"; 1065ab03e6d5SXin LI char _autoboot[] = "autoboot"; 1066ab03e6d5SXin LI 1067ab03e6d5SXin LI argv[0] = _sh; 10681a7bec91SWarner Losh argv[1] = __DECONST(char *, script); 1069ab03e6d5SXin LI argv[2] = runcom_mode == AUTOBOOT ? _autoboot : 0; 10708fae3551SRodney W. Grimes argv[3] = 0; 10718fae3551SRodney W. Grimes 10728fae3551SRodney W. Grimes sigprocmask(SIG_SETMASK, &sa.sa_mask, (sigset_t *) 0); 10738fae3551SRodney W. Grimes 10741ef60eb1SDavid Nugent #ifdef LOGIN_CAP 10751ef60eb1SDavid Nugent setprocresources(RESOURCE_RC); 10761ef60eb1SDavid Nugent #endif 10771a7bec91SWarner Losh execv(shell, argv); 10781a7bec91SWarner Losh stall("can't exec %s for %s: %m", shell, script); 10798fae3551SRodney W. Grimes _exit(1); /* force single user mode */ 10808fae3551SRodney W. Grimes } 10818fae3551SRodney W. Grimes 10828fae3551SRodney W. Grimes if (pid == -1) { 10831a7bec91SWarner Losh emergency("can't fork for %s on %s: %m", shell, script); 10848fae3551SRodney W. Grimes while (waitpid(-1, (int *) 0, WNOHANG) > 0) 10858fae3551SRodney W. Grimes continue; 10868fae3551SRodney W. Grimes sleep(STALL_TIMEOUT); 10878fae3551SRodney W. Grimes return (state_func_t) single_user; 10888fae3551SRodney W. Grimes } 10898fae3551SRodney W. Grimes 10908fae3551SRodney W. Grimes /* 10918fae3551SRodney W. Grimes * Copied from single_user(). This is a bit paranoid. 10928fae3551SRodney W. Grimes */ 10936e8ff8b7SDag-Erling Smørgrav requested_transition = 0; 10948fae3551SRodney W. Grimes do { 10958fae3551SRodney W. Grimes if ((wpid = waitpid(-1, &status, WUNTRACED)) != -1) 10968fae3551SRodney W. Grimes collect_child(wpid); 10978fae3551SRodney W. Grimes if (wpid == -1) { 10983f5ac575SEdward Tomasz Napierala if (requested_transition == death_single || 10993f5ac575SEdward Tomasz Napierala requested_transition == reroot) 11003f5ac575SEdward Tomasz Napierala return (state_func_t) requested_transition; 11018fae3551SRodney W. Grimes if (errno == EINTR) 11028fae3551SRodney W. Grimes continue; 11031a7bec91SWarner Losh warning("wait for %s on %s failed: %m; going to " 11041a7bec91SWarner Losh "single user mode", shell, script); 11058fae3551SRodney W. Grimes return (state_func_t) single_user; 11068fae3551SRodney W. Grimes } 11078fae3551SRodney W. Grimes if (wpid == pid && WIFSTOPPED(status)) { 11088fae3551SRodney W. Grimes warning("init: %s on %s stopped, restarting\n", 11091a7bec91SWarner Losh shell, script); 11108fae3551SRodney W. Grimes kill(pid, SIGCONT); 11118fae3551SRodney W. Grimes wpid = -1; 11128fae3551SRodney W. Grimes } 11138fae3551SRodney W. Grimes } while (wpid != pid); 11148fae3551SRodney W. Grimes 11158fae3551SRodney W. Grimes if (WIFSIGNALED(status) && WTERMSIG(status) == SIGTERM && 11168fae3551SRodney W. Grimes requested_transition == catatonia) { 11178fae3551SRodney W. Grimes /* /etc/rc executed /sbin/reboot; wait for the end quietly */ 11188fae3551SRodney W. Grimes sigset_t s; 11198fae3551SRodney W. Grimes 11208fae3551SRodney W. Grimes sigfillset(&s); 11218fae3551SRodney W. Grimes for (;;) 11228fae3551SRodney W. Grimes sigsuspend(&s); 11238fae3551SRodney W. Grimes } 11248fae3551SRodney W. Grimes 11258fae3551SRodney W. Grimes if (!WIFEXITED(status)) { 11261a7bec91SWarner Losh warning("%s on %s terminated abnormally, going to single " 11271a7bec91SWarner Losh "user mode", shell, script); 11288fae3551SRodney W. Grimes return (state_func_t) single_user; 11298fae3551SRodney W. Grimes } 11308fae3551SRodney W. Grimes 11318fae3551SRodney W. Grimes if (WEXITSTATUS(status)) 11328fae3551SRodney W. Grimes return (state_func_t) single_user; 11338fae3551SRodney W. Grimes 11341a7bec91SWarner Losh return (state_func_t) 0; 11358fae3551SRodney W. Grimes } 11368fae3551SRodney W. Grimes 11378fae3551SRodney W. Grimes /* 11388fae3551SRodney W. Grimes * Open the session database. 11398fae3551SRodney W. Grimes * 11408fae3551SRodney W. Grimes * NB: We could pass in the size here; is it necessary? 11418fae3551SRodney W. Grimes */ 114245cfb1dcSXin LI static int 114373bf18edSWarner Losh start_session_db(void) 11448fae3551SRodney W. Grimes { 11458fae3551SRodney W. Grimes if (session_db && (*session_db->close)(session_db)) 11468fae3551SRodney W. Grimes emergency("session database close: %s", strerror(errno)); 11478fae3551SRodney W. Grimes if ((session_db = dbopen(NULL, O_RDWR, 0, DB_HASH, NULL)) == 0) { 11488fae3551SRodney W. Grimes emergency("session database open: %s", strerror(errno)); 11498fae3551SRodney W. Grimes return (1); 11508fae3551SRodney W. Grimes } 11518fae3551SRodney W. Grimes return (0); 11528fae3551SRodney W. Grimes 11538fae3551SRodney W. Grimes } 11548fae3551SRodney W. Grimes 11558fae3551SRodney W. Grimes /* 11568fae3551SRodney W. Grimes * Add a new login session. 11578fae3551SRodney W. Grimes */ 115845cfb1dcSXin LI static void 115973bf18edSWarner Losh add_session(session_t *sp) 11608fae3551SRodney W. Grimes { 11618fae3551SRodney W. Grimes DBT key; 11628fae3551SRodney W. Grimes DBT data; 11638fae3551SRodney W. Grimes 11648fae3551SRodney W. Grimes key.data = &sp->se_process; 11658fae3551SRodney W. Grimes key.size = sizeof sp->se_process; 11668fae3551SRodney W. Grimes data.data = &sp; 11678fae3551SRodney W. Grimes data.size = sizeof sp; 11688fae3551SRodney W. Grimes 11698fae3551SRodney W. Grimes if ((*session_db->put)(session_db, &key, &data, 0)) 11708fae3551SRodney W. Grimes emergency("insert %d: %s", sp->se_process, strerror(errno)); 11718fae3551SRodney W. Grimes } 11728fae3551SRodney W. Grimes 11738fae3551SRodney W. Grimes /* 11748fae3551SRodney W. Grimes * Delete an old login session. 11758fae3551SRodney W. Grimes */ 117645cfb1dcSXin LI static void 117773bf18edSWarner Losh del_session(session_t *sp) 11788fae3551SRodney W. Grimes { 11798fae3551SRodney W. Grimes DBT key; 11808fae3551SRodney W. Grimes 11818fae3551SRodney W. Grimes key.data = &sp->se_process; 11828fae3551SRodney W. Grimes key.size = sizeof sp->se_process; 11838fae3551SRodney W. Grimes 11848fae3551SRodney W. Grimes if ((*session_db->del)(session_db, &key, 0)) 11858fae3551SRodney W. Grimes emergency("delete %d: %s", sp->se_process, strerror(errno)); 11868fae3551SRodney W. Grimes } 11878fae3551SRodney W. Grimes 11888fae3551SRodney W. Grimes /* 11898fae3551SRodney W. Grimes * Look up a login session by pid. 11908fae3551SRodney W. Grimes */ 119145cfb1dcSXin LI static session_t * 11928fae3551SRodney W. Grimes find_session(pid_t pid) 11938fae3551SRodney W. Grimes { 11948fae3551SRodney W. Grimes DBT key; 11958fae3551SRodney W. Grimes DBT data; 11968fae3551SRodney W. Grimes session_t *ret; 11978fae3551SRodney W. Grimes 11988fae3551SRodney W. Grimes key.data = &pid; 11998fae3551SRodney W. Grimes key.size = sizeof pid; 12008fae3551SRodney W. Grimes if ((*session_db->get)(session_db, &key, &data, 0) != 0) 12018fae3551SRodney W. Grimes return 0; 12028fae3551SRodney W. Grimes bcopy(data.data, (char *)&ret, sizeof(ret)); 12038fae3551SRodney W. Grimes return ret; 12048fae3551SRodney W. Grimes } 12058fae3551SRodney W. Grimes 12068fae3551SRodney W. Grimes /* 12078fae3551SRodney W. Grimes * Construct an argument vector from a command line. 12088fae3551SRodney W. Grimes */ 120945cfb1dcSXin LI static char ** 121073bf18edSWarner Losh construct_argv(char *command) 12118fae3551SRodney W. Grimes { 12123d438ad6SDavid E. O'Brien int argc = 0; 12133d438ad6SDavid E. O'Brien char **argv = (char **) malloc(((strlen(command) + 1) / 2 + 1) 12148fae3551SRodney W. Grimes * sizeof (char *)); 12158fae3551SRodney W. Grimes 12166be40c95SRuslan Ermilov if ((argv[argc++] = strk(command)) == 0) { 12176be40c95SRuslan Ermilov free(argv); 12186be40c95SRuslan Ermilov return (NULL); 12196be40c95SRuslan Ermilov } 12208889c700SDavid Nugent while ((argv[argc++] = strk((char *) 0)) != NULL) 12218fae3551SRodney W. Grimes continue; 12228fae3551SRodney W. Grimes return argv; 12238fae3551SRodney W. Grimes } 12248fae3551SRodney W. Grimes 12258fae3551SRodney W. Grimes /* 12268fae3551SRodney W. Grimes * Deallocate a session descriptor. 12278fae3551SRodney W. Grimes */ 122845cfb1dcSXin LI static void 122973bf18edSWarner Losh free_session(session_t *sp) 12308fae3551SRodney W. Grimes { 12318fae3551SRodney W. Grimes free(sp->se_device); 12328fae3551SRodney W. Grimes if (sp->se_getty) { 12338fae3551SRodney W. Grimes free(sp->se_getty); 1234b5df27e2SAndrey A. Chernov free(sp->se_getty_argv_space); 12358fae3551SRodney W. Grimes free(sp->se_getty_argv); 12368fae3551SRodney W. Grimes } 12378fae3551SRodney W. Grimes if (sp->se_window) { 12388fae3551SRodney W. Grimes free(sp->se_window); 1239b5df27e2SAndrey A. Chernov free(sp->se_window_argv_space); 12408fae3551SRodney W. Grimes free(sp->se_window_argv); 12418fae3551SRodney W. Grimes } 1242b5df27e2SAndrey A. Chernov if (sp->se_type) 1243b5df27e2SAndrey A. Chernov free(sp->se_type); 12448fae3551SRodney W. Grimes free(sp); 12458fae3551SRodney W. Grimes } 12468fae3551SRodney W. Grimes 12478fae3551SRodney W. Grimes /* 12488fae3551SRodney W. Grimes * Allocate a new session descriptor. 1249b0b670eeSAlfred Perlstein * Mark it SE_PRESENT. 12508fae3551SRodney W. Grimes */ 125145cfb1dcSXin LI static session_t * 12520b57dd6bSJilles Tjoelker new_session(session_t *sprev, struct ttyent *typ) 12538fae3551SRodney W. Grimes { 12543d438ad6SDavid E. O'Brien session_t *sp; 12554cbf8903SPaul Traina int fd; 12568fae3551SRodney W. Grimes 12578fae3551SRodney W. Grimes if ((typ->ty_status & TTY_ON) == 0 || 12588fae3551SRodney W. Grimes typ->ty_name == 0 || 12598fae3551SRodney W. Grimes typ->ty_getty == 0) 12608fae3551SRodney W. Grimes return 0; 12618fae3551SRodney W. Grimes 12621054bb1eSAndrey A. Chernov sp = (session_t *) calloc(1, sizeof (session_t)); 12638fae3551SRodney W. Grimes 1264b0b670eeSAlfred Perlstein sp->se_flags |= SE_PRESENT; 12658fae3551SRodney W. Grimes 12668fae3551SRodney W. Grimes sp->se_device = malloc(sizeof(_PATH_DEV) + strlen(typ->ty_name)); 1267091abe40SDavid E. O'Brien sprintf(sp->se_device, "%s%s", _PATH_DEV, typ->ty_name); 12688fae3551SRodney W. Grimes 12694cbf8903SPaul Traina /* 12704cbf8903SPaul Traina * Attempt to open the device, if we get "device not configured" 12714cbf8903SPaul Traina * then don't add the device to the session list. 12724cbf8903SPaul Traina */ 12734cbf8903SPaul Traina if ((fd = open(sp->se_device, O_RDONLY | O_NONBLOCK, 0)) < 0) { 127489e3b380SWarner Losh if (errno == ENXIO) { 12754cbf8903SPaul Traina free_session(sp); 12764cbf8903SPaul Traina return (0); 12774cbf8903SPaul Traina } 12784cbf8903SPaul Traina } else 12794cbf8903SPaul Traina close(fd); 12804cbf8903SPaul Traina 12818fae3551SRodney W. Grimes if (setupargv(sp, typ) == 0) { 12828fae3551SRodney W. Grimes free_session(sp); 12838fae3551SRodney W. Grimes return (0); 12848fae3551SRodney W. Grimes } 12858fae3551SRodney W. Grimes 12868fae3551SRodney W. Grimes sp->se_next = 0; 12878fae3551SRodney W. Grimes if (sprev == 0) { 12888fae3551SRodney W. Grimes sessions = sp; 12898fae3551SRodney W. Grimes sp->se_prev = 0; 12908fae3551SRodney W. Grimes } else { 12918fae3551SRodney W. Grimes sprev->se_next = sp; 12928fae3551SRodney W. Grimes sp->se_prev = sprev; 12938fae3551SRodney W. Grimes } 12948fae3551SRodney W. Grimes 12958fae3551SRodney W. Grimes return sp; 12968fae3551SRodney W. Grimes } 12978fae3551SRodney W. Grimes 12988fae3551SRodney W. Grimes /* 12998fae3551SRodney W. Grimes * Calculate getty and if useful window argv vectors. 13008fae3551SRodney W. Grimes */ 130145cfb1dcSXin LI static int 130273bf18edSWarner Losh setupargv(session_t *sp, struct ttyent *typ) 13038fae3551SRodney W. Grimes { 13048fae3551SRodney W. Grimes 13058fae3551SRodney W. Grimes if (sp->se_getty) { 13068fae3551SRodney W. Grimes free(sp->se_getty); 1307b5df27e2SAndrey A. Chernov free(sp->se_getty_argv_space); 13088fae3551SRodney W. Grimes free(sp->se_getty_argv); 13098fae3551SRodney W. Grimes } 13108fae3551SRodney W. Grimes sp->se_getty = malloc(strlen(typ->ty_getty) + strlen(typ->ty_name) + 2); 1311091abe40SDavid E. O'Brien sprintf(sp->se_getty, "%s %s", typ->ty_getty, typ->ty_name); 1312b5df27e2SAndrey A. Chernov sp->se_getty_argv_space = strdup(sp->se_getty); 1313b5df27e2SAndrey A. Chernov sp->se_getty_argv = construct_argv(sp->se_getty_argv_space); 13148fae3551SRodney W. Grimes if (sp->se_getty_argv == 0) { 13158fae3551SRodney W. Grimes warning("can't parse getty for port %s", sp->se_device); 13168fae3551SRodney W. Grimes free(sp->se_getty); 1317b5df27e2SAndrey A. Chernov free(sp->se_getty_argv_space); 1318b5df27e2SAndrey A. Chernov sp->se_getty = sp->se_getty_argv_space = 0; 13198fae3551SRodney W. Grimes return (0); 13208fae3551SRodney W. Grimes } 1321b5df27e2SAndrey A. Chernov if (sp->se_window) { 13228fae3551SRodney W. Grimes free(sp->se_window); 1323b5df27e2SAndrey A. Chernov free(sp->se_window_argv_space); 1324b5df27e2SAndrey A. Chernov free(sp->se_window_argv); 1325b5df27e2SAndrey A. Chernov } 1326b5df27e2SAndrey A. Chernov sp->se_window = sp->se_window_argv_space = 0; 1327b5df27e2SAndrey A. Chernov sp->se_window_argv = 0; 1328b5df27e2SAndrey A. Chernov if (typ->ty_window) { 13298fae3551SRodney W. Grimes sp->se_window = strdup(typ->ty_window); 1330b5df27e2SAndrey A. Chernov sp->se_window_argv_space = strdup(sp->se_window); 1331b5df27e2SAndrey A. Chernov sp->se_window_argv = construct_argv(sp->se_window_argv_space); 13328fae3551SRodney W. Grimes if (sp->se_window_argv == 0) { 13338fae3551SRodney W. Grimes warning("can't parse window for port %s", 13348fae3551SRodney W. Grimes sp->se_device); 1335b5df27e2SAndrey A. Chernov free(sp->se_window_argv_space); 13368fae3551SRodney W. Grimes free(sp->se_window); 1337b5df27e2SAndrey A. Chernov sp->se_window = sp->se_window_argv_space = 0; 13388fae3551SRodney W. Grimes return (0); 13398fae3551SRodney W. Grimes } 13408fae3551SRodney W. Grimes } 1341b5df27e2SAndrey A. Chernov if (sp->se_type) 1342b5df27e2SAndrey A. Chernov free(sp->se_type); 1343b5df27e2SAndrey A. Chernov sp->se_type = typ->ty_type ? strdup(typ->ty_type) : 0; 13448fae3551SRodney W. Grimes return (1); 13458fae3551SRodney W. Grimes } 13468fae3551SRodney W. Grimes 13478fae3551SRodney W. Grimes /* 13488fae3551SRodney W. Grimes * Walk the list of ttys and create sessions for each active line. 13498fae3551SRodney W. Grimes */ 135045cfb1dcSXin LI static state_func_t 135173bf18edSWarner Losh read_ttys(void) 13528fae3551SRodney W. Grimes { 13533d438ad6SDavid E. O'Brien session_t *sp, *snext; 13543d438ad6SDavid E. O'Brien struct ttyent *typ; 13558fae3551SRodney W. Grimes 13568fae3551SRodney W. Grimes /* 13578fae3551SRodney W. Grimes * Destroy any previous session state. 13588fae3551SRodney W. Grimes * There shouldn't be any, but just in case... 13598fae3551SRodney W. Grimes */ 13608fae3551SRodney W. Grimes for (sp = sessions; sp; sp = snext) { 13618fae3551SRodney W. Grimes snext = sp->se_next; 13628fae3551SRodney W. Grimes free_session(sp); 13638fae3551SRodney W. Grimes } 13648fae3551SRodney W. Grimes sessions = 0; 13658fae3551SRodney W. Grimes if (start_session_db()) 13668fae3551SRodney W. Grimes return (state_func_t) single_user; 13678fae3551SRodney W. Grimes 13688fae3551SRodney W. Grimes /* 13698fae3551SRodney W. Grimes * Allocate a session entry for each active port. 13708fae3551SRodney W. Grimes * Note that sp starts at 0. 13718fae3551SRodney W. Grimes */ 13728889c700SDavid Nugent while ((typ = getttyent()) != NULL) 13730b57dd6bSJilles Tjoelker if ((snext = new_session(sp, typ)) != NULL) 13748fae3551SRodney W. Grimes sp = snext; 13758fae3551SRodney W. Grimes 13768fae3551SRodney W. Grimes endttyent(); 13778fae3551SRodney W. Grimes 13788fae3551SRodney W. Grimes return (state_func_t) multi_user; 13798fae3551SRodney W. Grimes } 13808fae3551SRodney W. Grimes 13818fae3551SRodney W. Grimes /* 13828fae3551SRodney W. Grimes * Start a window system running. 13838fae3551SRodney W. Grimes */ 138445cfb1dcSXin LI static void 138573bf18edSWarner Losh start_window_system(session_t *sp) 13868fae3551SRodney W. Grimes { 13878fae3551SRodney W. Grimes pid_t pid; 13888fae3551SRodney W. Grimes sigset_t mask; 1389b5df27e2SAndrey A. Chernov char term[64], *env[2]; 13905010c3b6SKonstantin Belousov int status; 13918fae3551SRodney W. Grimes 13928fae3551SRodney W. Grimes if ((pid = fork()) == -1) { 13938fae3551SRodney W. Grimes emergency("can't fork for window system on port %s: %m", 13948fae3551SRodney W. Grimes sp->se_device); 13958fae3551SRodney W. Grimes /* hope that getty fails and we can try again */ 13968fae3551SRodney W. Grimes return; 13978fae3551SRodney W. Grimes } 1398091abe40SDavid E. O'Brien if (pid) { 13995010c3b6SKonstantin Belousov waitpid(-1, &status, 0); 14008fae3551SRodney W. Grimes return; 14015010c3b6SKonstantin Belousov } 14025010c3b6SKonstantin Belousov 14035010c3b6SKonstantin Belousov /* reparent window process to the init to not make a zombie on exit */ 14045010c3b6SKonstantin Belousov if ((pid = fork()) == -1) { 14055010c3b6SKonstantin Belousov emergency("can't fork for window system on port %s: %m", 14065010c3b6SKonstantin Belousov sp->se_device); 14075010c3b6SKonstantin Belousov _exit(1); 14085010c3b6SKonstantin Belousov } 14095010c3b6SKonstantin Belousov if (pid) 14105010c3b6SKonstantin Belousov _exit(0); 14118fae3551SRodney W. Grimes 14128fae3551SRodney W. Grimes sigemptyset(&mask); 14138fae3551SRodney W. Grimes sigprocmask(SIG_SETMASK, &mask, (sigset_t *) 0); 14148fae3551SRodney W. Grimes 14158fae3551SRodney W. Grimes if (setsid() < 0) 14168fae3551SRodney W. Grimes emergency("setsid failed (window) %m"); 14178fae3551SRodney W. Grimes 14181ef60eb1SDavid Nugent #ifdef LOGIN_CAP 14191ef60eb1SDavid Nugent setprocresources(RESOURCE_WINDOW); 14201ef60eb1SDavid Nugent #endif 1421b5df27e2SAndrey A. Chernov if (sp->se_type) { 1422b5df27e2SAndrey A. Chernov /* Don't use malloc after fork */ 1423b5df27e2SAndrey A. Chernov strcpy(term, "TERM="); 142433a20f82SDavid Greenman strncat(term, sp->se_type, sizeof(term) - 6); 1425b5df27e2SAndrey A. Chernov env[0] = term; 1426b5df27e2SAndrey A. Chernov env[1] = 0; 1427b5df27e2SAndrey A. Chernov } 1428b5df27e2SAndrey A. Chernov else 1429b5df27e2SAndrey A. Chernov env[0] = 0; 1430b5df27e2SAndrey A. Chernov execve(sp->se_window_argv[0], sp->se_window_argv, env); 14318fae3551SRodney W. Grimes stall("can't exec window system '%s' for port %s: %m", 14328fae3551SRodney W. Grimes sp->se_window_argv[0], sp->se_device); 14338fae3551SRodney W. Grimes _exit(1); 14348fae3551SRodney W. Grimes } 14358fae3551SRodney W. Grimes 14368fae3551SRodney W. Grimes /* 14378fae3551SRodney W. Grimes * Start a login session running. 14388fae3551SRodney W. Grimes */ 143945cfb1dcSXin LI static pid_t 144073bf18edSWarner Losh start_getty(session_t *sp) 14418fae3551SRodney W. Grimes { 14428fae3551SRodney W. Grimes pid_t pid; 14438fae3551SRodney W. Grimes sigset_t mask; 14448fae3551SRodney W. Grimes time_t current_time = time((time_t *) 0); 1445228d7ef2SAndrey A. Chernov int too_quick = 0; 1446b5df27e2SAndrey A. Chernov char term[64], *env[2]; 14478fae3551SRodney W. Grimes 1448bb2e87c4SMike Pritchard if (current_time >= sp->se_started && 1449228d7ef2SAndrey A. Chernov current_time - sp->se_started < GETTY_SPACING) { 1450228d7ef2SAndrey A. Chernov if (++sp->se_nspace > GETTY_NSPACE) { 1451228d7ef2SAndrey A. Chernov sp->se_nspace = 0; 1452228d7ef2SAndrey A. Chernov too_quick = 1; 1453228d7ef2SAndrey A. Chernov } 1454228d7ef2SAndrey A. Chernov } else 1455228d7ef2SAndrey A. Chernov sp->se_nspace = 0; 1456228d7ef2SAndrey A. Chernov 14578fae3551SRodney W. Grimes /* 14588fae3551SRodney W. Grimes * fork(), not vfork() -- we can't afford to block. 14598fae3551SRodney W. Grimes */ 14608fae3551SRodney W. Grimes if ((pid = fork()) == -1) { 14618fae3551SRodney W. Grimes emergency("can't fork for getty on port %s: %m", sp->se_device); 14628fae3551SRodney W. Grimes return -1; 14638fae3551SRodney W. Grimes } 14648fae3551SRodney W. Grimes 14658fae3551SRodney W. Grimes if (pid) 14668fae3551SRodney W. Grimes return pid; 14678fae3551SRodney W. Grimes 1468228d7ef2SAndrey A. Chernov if (too_quick) { 1469b5df27e2SAndrey A. Chernov warning("getty repeating too quickly on port %s, sleeping %d secs", 1470b5df27e2SAndrey A. Chernov sp->se_device, GETTY_SLEEP); 14718fae3551SRodney W. Grimes sleep((unsigned) GETTY_SLEEP); 14728fae3551SRodney W. Grimes } 14738fae3551SRodney W. Grimes 14748fae3551SRodney W. Grimes if (sp->se_window) { 14758fae3551SRodney W. Grimes start_window_system(sp); 14768fae3551SRodney W. Grimes sleep(WINDOW_WAIT); 14778fae3551SRodney W. Grimes } 14788fae3551SRodney W. Grimes 14798fae3551SRodney W. Grimes sigemptyset(&mask); 14808fae3551SRodney W. Grimes sigprocmask(SIG_SETMASK, &mask, (sigset_t *) 0); 14818fae3551SRodney W. Grimes 14821ef60eb1SDavid Nugent #ifdef LOGIN_CAP 14831ef60eb1SDavid Nugent setprocresources(RESOURCE_GETTY); 14841ef60eb1SDavid Nugent #endif 1485b5df27e2SAndrey A. Chernov if (sp->se_type) { 1486b5df27e2SAndrey A. Chernov /* Don't use malloc after fork */ 1487b5df27e2SAndrey A. Chernov strcpy(term, "TERM="); 148833a20f82SDavid Greenman strncat(term, sp->se_type, sizeof(term) - 6); 1489b5df27e2SAndrey A. Chernov env[0] = term; 1490b5df27e2SAndrey A. Chernov env[1] = 0; 1491091abe40SDavid E. O'Brien } else 1492b5df27e2SAndrey A. Chernov env[0] = 0; 1493b5df27e2SAndrey A. Chernov execve(sp->se_getty_argv[0], sp->se_getty_argv, env); 14948fae3551SRodney W. Grimes stall("can't exec getty '%s' for port %s: %m", 14958fae3551SRodney W. Grimes sp->se_getty_argv[0], sp->se_device); 14968fae3551SRodney W. Grimes _exit(1); 14978fae3551SRodney W. Grimes } 14988fae3551SRodney W. Grimes 14998fae3551SRodney W. Grimes /* 15008fae3551SRodney W. Grimes * Collect exit status for a child. 15018fae3551SRodney W. Grimes * If an exiting login, start a new login running. 15028fae3551SRodney W. Grimes */ 150345cfb1dcSXin LI static void 15048fae3551SRodney W. Grimes collect_child(pid_t pid) 15058fae3551SRodney W. Grimes { 15063d438ad6SDavid E. O'Brien session_t *sp, *sprev, *snext; 15078fae3551SRodney W. Grimes 15088fae3551SRodney W. Grimes if (! sessions) 15098fae3551SRodney W. Grimes return; 15108fae3551SRodney W. Grimes 15118fae3551SRodney W. Grimes if (! (sp = find_session(pid))) 15128fae3551SRodney W. Grimes return; 15138fae3551SRodney W. Grimes 15148fae3551SRodney W. Grimes del_session(sp); 15158fae3551SRodney W. Grimes sp->se_process = 0; 15168fae3551SRodney W. Grimes 15178fae3551SRodney W. Grimes if (sp->se_flags & SE_SHUTDOWN) { 15188889c700SDavid Nugent if ((sprev = sp->se_prev) != NULL) 15198fae3551SRodney W. Grimes sprev->se_next = sp->se_next; 15208fae3551SRodney W. Grimes else 15218fae3551SRodney W. Grimes sessions = sp->se_next; 15228889c700SDavid Nugent if ((snext = sp->se_next) != NULL) 15238fae3551SRodney W. Grimes snext->se_prev = sp->se_prev; 15248fae3551SRodney W. Grimes free_session(sp); 15258fae3551SRodney W. Grimes return; 15268fae3551SRodney W. Grimes } 15278fae3551SRodney W. Grimes 15288fae3551SRodney W. Grimes if ((pid = start_getty(sp)) == -1) { 15298fae3551SRodney W. Grimes /* serious trouble */ 15308fae3551SRodney W. Grimes requested_transition = clean_ttys; 15318fae3551SRodney W. Grimes return; 15328fae3551SRodney W. Grimes } 15338fae3551SRodney W. Grimes 15348fae3551SRodney W. Grimes sp->se_process = pid; 15358fae3551SRodney W. Grimes sp->se_started = time((time_t *) 0); 15368fae3551SRodney W. Grimes add_session(sp); 15378fae3551SRodney W. Grimes } 15388fae3551SRodney W. Grimes 15398fae3551SRodney W. Grimes /* 15408fae3551SRodney W. Grimes * Catch a signal and request a state transition. 15418fae3551SRodney W. Grimes */ 154245cfb1dcSXin LI static void 154373bf18edSWarner Losh transition_handler(int sig) 15448fae3551SRodney W. Grimes { 15458fae3551SRodney W. Grimes 15468fae3551SRodney W. Grimes switch (sig) { 15478fae3551SRodney W. Grimes case SIGHUP: 1548acf0ab06SJilles Tjoelker if (current_state == read_ttys || current_state == multi_user || 1549acf0ab06SJilles Tjoelker current_state == clean_ttys || current_state == catatonia) 15508fae3551SRodney W. Grimes requested_transition = clean_ttys; 15518fae3551SRodney W. Grimes break; 1552a0a549c7SRuslan Ermilov case SIGUSR2: 1553a0a549c7SRuslan Ermilov howto = RB_POWEROFF; 1554a0a549c7SRuslan Ermilov case SIGUSR1: 1555a0a549c7SRuslan Ermilov howto |= RB_HALT; 1556e460cfd3SNate Williams case SIGINT: 1557db8ad19dSJordan K. Hubbard Reboot = TRUE; 15588fae3551SRodney W. Grimes case SIGTERM: 1559acf0ab06SJilles Tjoelker if (current_state == read_ttys || current_state == multi_user || 1560acf0ab06SJilles Tjoelker current_state == clean_ttys || current_state == catatonia) 15618fae3551SRodney W. Grimes requested_transition = death; 1562acf0ab06SJilles Tjoelker else 1563acf0ab06SJilles Tjoelker requested_transition = death_single; 15648fae3551SRodney W. Grimes break; 15658fae3551SRodney W. Grimes case SIGTSTP: 1566acf0ab06SJilles Tjoelker if (current_state == runcom || current_state == read_ttys || 1567acf0ab06SJilles Tjoelker current_state == clean_ttys || 1568acf0ab06SJilles Tjoelker current_state == multi_user || current_state == catatonia) 15698fae3551SRodney W. Grimes requested_transition = catatonia; 15708fae3551SRodney W. Grimes break; 15713f5ac575SEdward Tomasz Napierala case SIGEMT: 15723f5ac575SEdward Tomasz Napierala requested_transition = reroot; 15733f5ac575SEdward Tomasz Napierala break; 15748fae3551SRodney W. Grimes default: 15758fae3551SRodney W. Grimes requested_transition = 0; 15768fae3551SRodney W. Grimes break; 15778fae3551SRodney W. Grimes } 15788fae3551SRodney W. Grimes } 15798fae3551SRodney W. Grimes 15808fae3551SRodney W. Grimes /* 15818fae3551SRodney W. Grimes * Take the system multiuser. 15828fae3551SRodney W. Grimes */ 158345cfb1dcSXin LI static state_func_t 158473bf18edSWarner Losh multi_user(void) 15858fae3551SRodney W. Grimes { 15868fae3551SRodney W. Grimes pid_t pid; 15873d438ad6SDavid E. O'Brien session_t *sp; 15888fae3551SRodney W. Grimes 15898fae3551SRodney W. Grimes requested_transition = 0; 15908fae3551SRodney W. Grimes 15918fae3551SRodney W. Grimes /* 15928fae3551SRodney W. Grimes * If the administrator has not set the security level to -1 15938fae3551SRodney W. Grimes * to indicate that the kernel should not run multiuser in secure 15948fae3551SRodney W. Grimes * mode, and the run script has not set a higher level of security 15958fae3551SRodney W. Grimes * than level 1, then put the kernel into secure mode. 15968fae3551SRodney W. Grimes */ 15978fae3551SRodney W. Grimes if (getsecuritylevel() == 0) 15988fae3551SRodney W. Grimes setsecuritylevel(1); 15998fae3551SRodney W. Grimes 16008fae3551SRodney W. Grimes for (sp = sessions; sp; sp = sp->se_next) { 16018fae3551SRodney W. Grimes if (sp->se_process) 16028fae3551SRodney W. Grimes continue; 16038fae3551SRodney W. Grimes if ((pid = start_getty(sp)) == -1) { 16048fae3551SRodney W. Grimes /* serious trouble */ 16058fae3551SRodney W. Grimes requested_transition = clean_ttys; 16068fae3551SRodney W. Grimes break; 16078fae3551SRodney W. Grimes } 16088fae3551SRodney W. Grimes sp->se_process = pid; 16098fae3551SRodney W. Grimes sp->se_started = time((time_t *) 0); 16108fae3551SRodney W. Grimes add_session(sp); 16118fae3551SRodney W. Grimes } 16128fae3551SRodney W. Grimes 16138fae3551SRodney W. Grimes while (!requested_transition) 16148fae3551SRodney W. Grimes if ((pid = waitpid(-1, (int *) 0, 0)) != -1) 16158fae3551SRodney W. Grimes collect_child(pid); 16168fae3551SRodney W. Grimes 16178fae3551SRodney W. Grimes return (state_func_t) requested_transition; 16188fae3551SRodney W. Grimes } 16198fae3551SRodney W. Grimes 16208fae3551SRodney W. Grimes /* 1621b0b670eeSAlfred Perlstein * This is an (n*2)+(n^2) algorithm. We hope it isn't run often... 16228fae3551SRodney W. Grimes */ 162345cfb1dcSXin LI static state_func_t 162473bf18edSWarner Losh clean_ttys(void) 16258fae3551SRodney W. Grimes { 16263d438ad6SDavid E. O'Brien session_t *sp, *sprev; 16273d438ad6SDavid E. O'Brien struct ttyent *typ; 16283d438ad6SDavid E. O'Brien int devlen; 1629b5df27e2SAndrey A. Chernov char *old_getty, *old_window, *old_type; 16308fae3551SRodney W. Grimes 1631b0b670eeSAlfred Perlstein /* 1632b0b670eeSAlfred Perlstein * mark all sessions for death, (!SE_PRESENT) 1633b0b670eeSAlfred Perlstein * as we find or create new ones they'll be marked as keepers, 1634b0b670eeSAlfred Perlstein * we'll later nuke all the ones not found in /etc/ttys 1635b0b670eeSAlfred Perlstein */ 1636b0b670eeSAlfred Perlstein for (sp = sessions; sp != NULL; sp = sp->se_next) 1637b0b670eeSAlfred Perlstein sp->se_flags &= ~SE_PRESENT; 1638b0b670eeSAlfred Perlstein 16398fae3551SRodney W. Grimes devlen = sizeof(_PATH_DEV) - 1; 16408889c700SDavid Nugent while ((typ = getttyent()) != NULL) { 16418fae3551SRodney W. Grimes for (sprev = 0, sp = sessions; sp; sprev = sp, sp = sp->se_next) 16428fae3551SRodney W. Grimes if (strcmp(typ->ty_name, sp->se_device + devlen) == 0) 16438fae3551SRodney W. Grimes break; 16448fae3551SRodney W. Grimes 16458fae3551SRodney W. Grimes if (sp) { 1646b0b670eeSAlfred Perlstein /* we want this one to live */ 1647b0b670eeSAlfred Perlstein sp->se_flags |= SE_PRESENT; 16488fae3551SRodney W. Grimes if ((typ->ty_status & TTY_ON) == 0 || 16498fae3551SRodney W. Grimes typ->ty_getty == 0) { 16508fae3551SRodney W. Grimes sp->se_flags |= SE_SHUTDOWN; 16518fae3551SRodney W. Grimes kill(sp->se_process, SIGHUP); 16528fae3551SRodney W. Grimes continue; 16538fae3551SRodney W. Grimes } 16548fae3551SRodney W. Grimes sp->se_flags &= ~SE_SHUTDOWN; 1655b5df27e2SAndrey A. Chernov old_getty = sp->se_getty ? strdup(sp->se_getty) : 0; 1656b5df27e2SAndrey A. Chernov old_window = sp->se_window ? strdup(sp->se_window) : 0; 1657b5df27e2SAndrey A. Chernov old_type = sp->se_type ? strdup(sp->se_type) : 0; 16588fae3551SRodney W. Grimes if (setupargv(sp, typ) == 0) { 16598fae3551SRodney W. Grimes warning("can't parse getty for port %s", 16608fae3551SRodney W. Grimes sp->se_device); 16618fae3551SRodney W. Grimes sp->se_flags |= SE_SHUTDOWN; 16628fae3551SRodney W. Grimes kill(sp->se_process, SIGHUP); 16638fae3551SRodney W. Grimes } 1664b5df27e2SAndrey A. Chernov else if ( !old_getty 16658889c700SDavid Nugent || (!old_type && sp->se_type) 16668889c700SDavid Nugent || (old_type && !sp->se_type) 16678889c700SDavid Nugent || (!old_window && sp->se_window) 16688889c700SDavid Nugent || (old_window && !sp->se_window) 16698889c700SDavid Nugent || (strcmp(old_getty, sp->se_getty) != 0) 16708889c700SDavid Nugent || (old_window && strcmp(old_window, sp->se_window) != 0) 16718889c700SDavid Nugent || (old_type && strcmp(old_type, sp->se_type) != 0) 1672b5df27e2SAndrey A. Chernov ) { 1673b5df27e2SAndrey A. Chernov /* Don't set SE_SHUTDOWN here */ 1674b5df27e2SAndrey A. Chernov sp->se_nspace = 0; 1675b5df27e2SAndrey A. Chernov sp->se_started = 0; 1676b5df27e2SAndrey A. Chernov kill(sp->se_process, SIGHUP); 1677b5df27e2SAndrey A. Chernov } 1678b5df27e2SAndrey A. Chernov if (old_getty) 1679b5df27e2SAndrey A. Chernov free(old_getty); 16802d887af5SMike Heffner if (old_window) 1681b5df27e2SAndrey A. Chernov free(old_window); 1682b5df27e2SAndrey A. Chernov if (old_type) 1683b5df27e2SAndrey A. Chernov free(old_type); 16848fae3551SRodney W. Grimes continue; 16858fae3551SRodney W. Grimes } 16868fae3551SRodney W. Grimes 16870b57dd6bSJilles Tjoelker new_session(sprev, typ); 16888fae3551SRodney W. Grimes } 16898fae3551SRodney W. Grimes 16908fae3551SRodney W. Grimes endttyent(); 16918fae3551SRodney W. Grimes 1692b0b670eeSAlfred Perlstein /* 1693b0b670eeSAlfred Perlstein * sweep through and kill all deleted sessions 1694b0b670eeSAlfred Perlstein * ones who's /etc/ttys line was deleted (SE_PRESENT unset) 1695b0b670eeSAlfred Perlstein */ 1696b0b670eeSAlfred Perlstein for (sp = sessions; sp != NULL; sp = sp->se_next) { 1697b0b670eeSAlfred Perlstein if ((sp->se_flags & SE_PRESENT) == 0) { 1698b0b670eeSAlfred Perlstein sp->se_flags |= SE_SHUTDOWN; 1699b0b670eeSAlfred Perlstein kill(sp->se_process, SIGHUP); 1700b0b670eeSAlfred Perlstein } 1701b0b670eeSAlfred Perlstein } 1702b0b670eeSAlfred Perlstein 17038fae3551SRodney W. Grimes return (state_func_t) multi_user; 17048fae3551SRodney W. Grimes } 17058fae3551SRodney W. Grimes 17068fae3551SRodney W. Grimes /* 17078fae3551SRodney W. Grimes * Block further logins. 17088fae3551SRodney W. Grimes */ 170945cfb1dcSXin LI static state_func_t 171073bf18edSWarner Losh catatonia(void) 17118fae3551SRodney W. Grimes { 17123d438ad6SDavid E. O'Brien session_t *sp; 17138fae3551SRodney W. Grimes 17148fae3551SRodney W. Grimes for (sp = sessions; sp; sp = sp->se_next) 17158fae3551SRodney W. Grimes sp->se_flags |= SE_SHUTDOWN; 17168fae3551SRodney W. Grimes 17178fae3551SRodney W. Grimes return (state_func_t) multi_user; 17188fae3551SRodney W. Grimes } 17198fae3551SRodney W. Grimes 17208fae3551SRodney W. Grimes /* 17218fae3551SRodney W. Grimes * Note SIGALRM. 17228fae3551SRodney W. Grimes */ 172345cfb1dcSXin LI static void 172473bf18edSWarner Losh alrm_handler(int sig) 17258fae3551SRodney W. Grimes { 1726091abe40SDavid E. O'Brien 17278889c700SDavid Nugent (void)sig; 17288fae3551SRodney W. Grimes clang = 1; 17298fae3551SRodney W. Grimes } 17308fae3551SRodney W. Grimes 17318fae3551SRodney W. Grimes /* 17328fae3551SRodney W. Grimes * Bring the system down to single user. 17338fae3551SRodney W. Grimes */ 173445cfb1dcSXin LI static state_func_t 173573bf18edSWarner Losh death(void) 17368fae3551SRodney W. Grimes { 17372eb0015aSColin Percival int block, blocked; 17382eb0015aSColin Percival size_t len; 17392eb0015aSColin Percival 17402eb0015aSColin Percival /* Temporarily block suspend. */ 17412eb0015aSColin Percival len = sizeof(blocked); 17422eb0015aSColin Percival block = 1; 17432eb0015aSColin Percival if (sysctlbyname("kern.suspend_blocked", &blocked, &len, 17442eb0015aSColin Percival &block, sizeof(block)) == -1) 17452eb0015aSColin Percival blocked = 0; 17468fae3551SRodney W. Grimes 17474ae35b5dSEd Schouten /* 17484ae35b5dSEd Schouten * Also revoke the TTY here. Because runshutdown() may reopen 17494ae35b5dSEd Schouten * the TTY whose getty we're killing here, there is no guarantee 17504ae35b5dSEd Schouten * runshutdown() will perform the initial open() call, causing 17514ae35b5dSEd Schouten * the terminal attributes to be misconfigured. 17524ae35b5dSEd Schouten */ 17533f5ac575SEdward Tomasz Napierala revoke_ttys(); 17548fae3551SRodney W. Grimes 17558889c700SDavid Nugent /* Try to run the rc.shutdown script within a period of time */ 1756091abe40SDavid E. O'Brien runshutdown(); 17578889c700SDavid Nugent 17582eb0015aSColin Percival /* Unblock suspend if we blocked it. */ 17592eb0015aSColin Percival if (!blocked) 17602eb0015aSColin Percival sysctlbyname("kern.suspend_blocked", NULL, NULL, 17612eb0015aSColin Percival &blocked, sizeof(blocked)); 17622eb0015aSColin Percival 1763acf0ab06SJilles Tjoelker return (state_func_t) death_single; 1764acf0ab06SJilles Tjoelker } 1765acf0ab06SJilles Tjoelker 1766acf0ab06SJilles Tjoelker /* 1767acf0ab06SJilles Tjoelker * Do what is necessary to reinitialize single user mode or reboot 1768acf0ab06SJilles Tjoelker * from an incomplete state. 1769acf0ab06SJilles Tjoelker */ 1770acf0ab06SJilles Tjoelker static state_func_t 1771acf0ab06SJilles Tjoelker death_single(void) 1772acf0ab06SJilles Tjoelker { 1773acf0ab06SJilles Tjoelker int i; 1774acf0ab06SJilles Tjoelker pid_t pid; 1775acf0ab06SJilles Tjoelker static const int death_sigs[2] = { SIGTERM, SIGKILL }; 1776acf0ab06SJilles Tjoelker 1777acf0ab06SJilles Tjoelker revoke(_PATH_CONSOLE); 1778acf0ab06SJilles Tjoelker 1779c3d7c52eSAndrey A. Chernov for (i = 0; i < 2; ++i) { 17808fae3551SRodney W. Grimes if (kill(-1, death_sigs[i]) == -1 && errno == ESRCH) 17818fae3551SRodney W. Grimes return (state_func_t) single_user; 17828fae3551SRodney W. Grimes 17838fae3551SRodney W. Grimes clang = 0; 17848fae3551SRodney W. Grimes alarm(DEATH_WATCH); 17858fae3551SRodney W. Grimes do 17868fae3551SRodney W. Grimes if ((pid = waitpid(-1, (int *)0, 0)) != -1) 17878fae3551SRodney W. Grimes collect_child(pid); 17888fae3551SRodney W. Grimes while (clang == 0 && errno != ECHILD); 17898fae3551SRodney W. Grimes 17908fae3551SRodney W. Grimes if (errno == ECHILD) 17918fae3551SRodney W. Grimes return (state_func_t) single_user; 17928fae3551SRodney W. Grimes } 17938fae3551SRodney W. Grimes 17948fae3551SRodney W. Grimes warning("some processes would not die; ps axl advised"); 17958fae3551SRodney W. Grimes 17968fae3551SRodney W. Grimes return (state_func_t) single_user; 17978fae3551SRodney W. Grimes } 17988889c700SDavid Nugent 17993f5ac575SEdward Tomasz Napierala static void 18003f5ac575SEdward Tomasz Napierala revoke_ttys(void) 18013f5ac575SEdward Tomasz Napierala { 18023f5ac575SEdward Tomasz Napierala session_t *sp; 18033f5ac575SEdward Tomasz Napierala 18043f5ac575SEdward Tomasz Napierala for (sp = sessions; sp; sp = sp->se_next) { 18053f5ac575SEdward Tomasz Napierala sp->se_flags |= SE_SHUTDOWN; 18063f5ac575SEdward Tomasz Napierala kill(sp->se_process, SIGHUP); 18073f5ac575SEdward Tomasz Napierala revoke(sp->se_device); 18083f5ac575SEdward Tomasz Napierala } 18093f5ac575SEdward Tomasz Napierala } 18103f5ac575SEdward Tomasz Napierala 18118889c700SDavid Nugent /* 18128889c700SDavid Nugent * Run the system shutdown script. 18138889c700SDavid Nugent * 18148889c700SDavid Nugent * Exit codes: XXX I should document more 18158889c700SDavid Nugent * -2 shutdown script terminated abnormally 18168889c700SDavid Nugent * -1 fatal error - can't run script 18178889c700SDavid Nugent * 0 good. 18188889c700SDavid Nugent * >0 some error (exit code) 18198889c700SDavid Nugent */ 182045cfb1dcSXin LI static int 182173bf18edSWarner Losh runshutdown(void) 18228889c700SDavid Nugent { 18238889c700SDavid Nugent pid_t pid, wpid; 18248889c700SDavid Nugent int status; 18258889c700SDavid Nugent int shutdowntimeout; 18268889c700SDavid Nugent size_t len; 1827a69497d7SMatthew Dillon char *argv[4]; 18281a7bec91SWarner Losh const char *shell; 18298889c700SDavid Nugent struct sigaction sa; 183086bf62dcSDavid Nugent struct stat sb; 183186bf62dcSDavid Nugent 183286bf62dcSDavid Nugent /* 183386bf62dcSDavid Nugent * rc.shutdown is optional, so to prevent any unnecessary 183486bf62dcSDavid Nugent * complaints from the shell we simply don't run it if the 183586bf62dcSDavid Nugent * file does not exist. If the stat() here fails for other 183686bf62dcSDavid Nugent * reasons, we'll let the shell complain. 183786bf62dcSDavid Nugent */ 183886bf62dcSDavid Nugent if (stat(_PATH_RUNDOWN, &sb) == -1 && errno == ENOENT) 183986bf62dcSDavid Nugent return 0; 18408889c700SDavid Nugent 18411a7bec91SWarner Losh shell = get_shell(); 18421a7bec91SWarner Losh 18438889c700SDavid Nugent if ((pid = fork()) == 0) { 18448889c700SDavid Nugent sigemptyset(&sa.sa_mask); 18458889c700SDavid Nugent sa.sa_flags = 0; 18468889c700SDavid Nugent sa.sa_handler = SIG_IGN; 1847091abe40SDavid E. O'Brien sigaction(SIGTSTP, &sa, (struct sigaction *)0); 1848091abe40SDavid E. O'Brien sigaction(SIGHUP, &sa, (struct sigaction *)0); 18498889c700SDavid Nugent 18504c2c7b2cSEd Schouten open_console(); 1851ab03e6d5SXin LI 1852ab03e6d5SXin LI char _sh[] = "sh"; 1853ab03e6d5SXin LI char _reboot[] = "reboot"; 1854ab03e6d5SXin LI char _single[] = "single"; 1855ab03e6d5SXin LI char _path_rundown[] = _PATH_RUNDOWN; 1856ab03e6d5SXin LI 1857ab03e6d5SXin LI argv[0] = _sh; 1858ab03e6d5SXin LI argv[1] = _path_rundown; 1859ab03e6d5SXin LI argv[2] = Reboot ? _reboot : _single; 1860a69497d7SMatthew Dillon argv[3] = 0; 18618889c700SDavid Nugent 18628889c700SDavid Nugent sigprocmask(SIG_SETMASK, &sa.sa_mask, (sigset_t *) 0); 18638889c700SDavid Nugent 186425cf4a54SAndrey A. Chernov #ifdef LOGIN_CAP 186525cf4a54SAndrey A. Chernov setprocresources(RESOURCE_RC); 186625cf4a54SAndrey A. Chernov #endif 18671a7bec91SWarner Losh execv(shell, argv); 18681a7bec91SWarner Losh warning("can't exec %s for %s: %m", shell, _PATH_RUNDOWN); 18698889c700SDavid Nugent _exit(1); /* force single user mode */ 18708889c700SDavid Nugent } 18718889c700SDavid Nugent 18728889c700SDavid Nugent if (pid == -1) { 18731a7bec91SWarner Losh emergency("can't fork for %s on %s: %m", shell, _PATH_RUNDOWN); 18748889c700SDavid Nugent while (waitpid(-1, (int *) 0, WNOHANG) > 0) 18758889c700SDavid Nugent continue; 18768889c700SDavid Nugent sleep(STALL_TIMEOUT); 18778889c700SDavid Nugent return -1; 18788889c700SDavid Nugent } 18798889c700SDavid Nugent 18808889c700SDavid Nugent len = sizeof(shutdowntimeout); 1881091abe40SDavid E. O'Brien if (sysctlbyname("kern.init_shutdown_timeout", &shutdowntimeout, &len, 1882091abe40SDavid E. O'Brien NULL, 0) == -1 || shutdowntimeout < 2) 18838889c700SDavid Nugent shutdowntimeout = DEATH_SCRIPT; 18848889c700SDavid Nugent alarm(shutdowntimeout); 18858889c700SDavid Nugent clang = 0; 18868889c700SDavid Nugent /* 18878889c700SDavid Nugent * Copied from single_user(). This is a bit paranoid. 18888889c700SDavid Nugent * Use the same ALRM handler. 18898889c700SDavid Nugent */ 18908889c700SDavid Nugent do { 18918889c700SDavid Nugent if ((wpid = waitpid(-1, &status, WUNTRACED)) != -1) 18928889c700SDavid Nugent collect_child(wpid); 18938889c700SDavid Nugent if (clang == 1) { 18948889c700SDavid Nugent /* we were waiting for the sub-shell */ 18958889c700SDavid Nugent kill(wpid, SIGTERM); 18961a7bec91SWarner Losh warning("timeout expired for %s on %s: %m; going to " 18971a7bec91SWarner Losh "single user mode", shell, _PATH_RUNDOWN); 18988889c700SDavid Nugent return -1; 18998889c700SDavid Nugent } 19008889c700SDavid Nugent if (wpid == -1) { 19018889c700SDavid Nugent if (errno == EINTR) 19028889c700SDavid Nugent continue; 19031a7bec91SWarner Losh warning("wait for %s on %s failed: %m; going to " 19041a7bec91SWarner Losh "single user mode", shell, _PATH_RUNDOWN); 19058889c700SDavid Nugent return -1; 19068889c700SDavid Nugent } 19078889c700SDavid Nugent if (wpid == pid && WIFSTOPPED(status)) { 19088889c700SDavid Nugent warning("init: %s on %s stopped, restarting\n", 19091a7bec91SWarner Losh shell, _PATH_RUNDOWN); 19108889c700SDavid Nugent kill(pid, SIGCONT); 19118889c700SDavid Nugent wpid = -1; 19128889c700SDavid Nugent } 19138889c700SDavid Nugent } while (wpid != pid && !clang); 19148889c700SDavid Nugent 19158889c700SDavid Nugent /* Turn off the alarm */ 19168889c700SDavid Nugent alarm(0); 19178889c700SDavid Nugent 19188889c700SDavid Nugent if (WIFSIGNALED(status) && WTERMSIG(status) == SIGTERM && 19198889c700SDavid Nugent requested_transition == catatonia) { 19208889c700SDavid Nugent /* 19218889c700SDavid Nugent * /etc/rc.shutdown executed /sbin/reboot; 19228889c700SDavid Nugent * wait for the end quietly 19238889c700SDavid Nugent */ 19248889c700SDavid Nugent sigset_t s; 19258889c700SDavid Nugent 19268889c700SDavid Nugent sigfillset(&s); 19278889c700SDavid Nugent for (;;) 19288889c700SDavid Nugent sigsuspend(&s); 19298889c700SDavid Nugent } 19308889c700SDavid Nugent 19318889c700SDavid Nugent if (!WIFEXITED(status)) { 19321a7bec91SWarner Losh warning("%s on %s terminated abnormally, going to " 19331a7bec91SWarner Losh "single user mode", shell, _PATH_RUNDOWN); 19348889c700SDavid Nugent return -2; 19358889c700SDavid Nugent } 19368889c700SDavid Nugent 19378889c700SDavid Nugent if ((status = WEXITSTATUS(status)) != 0) 19388889c700SDavid Nugent warning("%s returned status %d", _PATH_RUNDOWN, status); 19398889c700SDavid Nugent 19408889c700SDavid Nugent return status; 19418889c700SDavid Nugent } 19428889c700SDavid Nugent 1943ab03e6d5SXin LI static char * 194481ab7fb2SAndrey A. Chernov strk(char *p) 194581ab7fb2SAndrey A. Chernov { 194681ab7fb2SAndrey A. Chernov static char *t; 194781ab7fb2SAndrey A. Chernov char *q; 194881ab7fb2SAndrey A. Chernov int c; 194981ab7fb2SAndrey A. Chernov 195081ab7fb2SAndrey A. Chernov if (p) 195181ab7fb2SAndrey A. Chernov t = p; 195281ab7fb2SAndrey A. Chernov if (!t) 195381ab7fb2SAndrey A. Chernov return 0; 195481ab7fb2SAndrey A. Chernov 195581ab7fb2SAndrey A. Chernov c = *t; 195681ab7fb2SAndrey A. Chernov while (c == ' ' || c == '\t' ) 195781ab7fb2SAndrey A. Chernov c = *++t; 195881ab7fb2SAndrey A. Chernov if (!c) { 195981ab7fb2SAndrey A. Chernov t = 0; 196081ab7fb2SAndrey A. Chernov return 0; 196181ab7fb2SAndrey A. Chernov } 196281ab7fb2SAndrey A. Chernov q = t; 196381ab7fb2SAndrey A. Chernov if (c == '\'') { 196481ab7fb2SAndrey A. Chernov c = *++t; 196581ab7fb2SAndrey A. Chernov q = t; 196681ab7fb2SAndrey A. Chernov while (c && c != '\'') 196781ab7fb2SAndrey A. Chernov c = *++t; 196881ab7fb2SAndrey A. Chernov if (!c) /* unterminated string */ 196981ab7fb2SAndrey A. Chernov q = t = 0; 197081ab7fb2SAndrey A. Chernov else 197181ab7fb2SAndrey A. Chernov *t++ = 0; 197281ab7fb2SAndrey A. Chernov } else { 197381ab7fb2SAndrey A. Chernov while (c && c != ' ' && c != '\t' ) 197481ab7fb2SAndrey A. Chernov c = *++t; 197581ab7fb2SAndrey A. Chernov *t++ = 0; 197681ab7fb2SAndrey A. Chernov if (!c) 197781ab7fb2SAndrey A. Chernov t = 0; 197881ab7fb2SAndrey A. Chernov } 197981ab7fb2SAndrey A. Chernov return q; 198081ab7fb2SAndrey A. Chernov } 19811ef60eb1SDavid Nugent 19821ef60eb1SDavid Nugent #ifdef LOGIN_CAP 198345cfb1dcSXin LI static void 198473bf18edSWarner Losh setprocresources(const char *cname) 19851ef60eb1SDavid Nugent { 1986e82d5545SDavid Nugent login_cap_t *lc; 1987a2ee73bcSAndrey A. Chernov if ((lc = login_getclassbyname(cname, NULL)) != NULL) { 1988091abe40SDavid E. O'Brien setusercontext(lc, (struct passwd*)NULL, 0, 1989595ab563SJilles Tjoelker LOGIN_SETPRIORITY | LOGIN_SETRESOURCES | 1990595ab563SJilles Tjoelker LOGIN_SETLOGINCLASS | LOGIN_SETCPUMASK); 19911ef60eb1SDavid Nugent login_close(lc); 19921ef60eb1SDavid Nugent } 19931ef60eb1SDavid Nugent } 19941ef60eb1SDavid Nugent #endif 1995