| 1 | #ifndef lint |
| 2 | static char *sccsid = "@(#)reboot.c 4.8 (Berkeley) %G%"; |
| 3 | #endif |
| 4 | |
| 5 | /* |
| 6 | * Reboot |
| 7 | */ |
| 8 | #include <stdio.h> |
| 9 | #include <sys/reboot.h> |
| 10 | #include <errno.h> |
| 11 | #include <signal.h> |
| 12 | #include <sys/types.h> |
| 13 | #include <sys/time.h> |
| 14 | |
| 15 | #define SHUTDOWNLOG "/usr/adm/shutdownlog" |
| 16 | |
| 17 | main(argc, argv) |
| 18 | int argc; |
| 19 | char **argv; |
| 20 | { |
| 21 | int howto; |
| 22 | register char *argp; |
| 23 | register i; |
| 24 | register ok = 0; |
| 25 | register qflag = 0; |
| 26 | |
| 27 | argc--, argv++; |
| 28 | howto = 0; |
| 29 | while (argc > 0) { |
| 30 | if (!strcmp(*argv, "-q")) |
| 31 | qflag++; |
| 32 | else if (!strcmp(*argv, "-n")) |
| 33 | howto |= RB_NOSYNC; |
| 34 | else { |
| 35 | fprintf(stderr, |
| 36 | "usage: reboot [ -n ][ -q ]\n"); |
| 37 | exit(1); |
| 38 | } |
| 39 | argc--, argv++; |
| 40 | } |
| 41 | |
| 42 | signal(SIGHUP, SIG_IGN); /* for remote connections */ |
| 43 | if (kill(1, SIGTSTP) == -1) { |
| 44 | fprintf(stderr, "reboot: can't idle init\n"); |
| 45 | exit(1); |
| 46 | } |
| 47 | |
| 48 | if (!qflag) for (i = 1; ; i++) { |
| 49 | if (kill(-1, SIGKILL) == -1) { |
| 50 | extern int errno; |
| 51 | |
| 52 | if (errno == ESRCH) |
| 53 | break; |
| 54 | |
| 55 | perror("reboot: kill"); |
| 56 | kill(1, SIGHUP); |
| 57 | exit(1); |
| 58 | } |
| 59 | if (i > 5) { |
| 60 | fprintf(stderr, "CAUTION: some process(es) wouldn't die\n"); |
| 61 | break; |
| 62 | } |
| 63 | setalarm(2 * i); |
| 64 | pause(); |
| 65 | } |
| 66 | |
| 67 | if ((howto & RB_NOSYNC) == 0) |
| 68 | log_entry(); |
| 69 | if (!qflag) { |
| 70 | if (!(howto & RB_NOSYNC)) { |
| 71 | markdown(); |
| 72 | sync(); |
| 73 | sync(); |
| 74 | } |
| 75 | setalarm(5); |
| 76 | pause(); |
| 77 | } |
| 78 | syscall(55, howto); |
| 79 | perror("reboot"); |
| 80 | kill(1, SIGHUP); |
| 81 | exit(1); |
| 82 | } |
| 83 | |
| 84 | dingdong() |
| 85 | { |
| 86 | /* RRRIIINNNGGG RRRIIINNNGGG */ |
| 87 | } |
| 88 | |
| 89 | setalarm(n) |
| 90 | { |
| 91 | signal(SIGALRM, dingdong); |
| 92 | alarm(n); |
| 93 | } |
| 94 | |
| 95 | #include <utmp.h> |
| 96 | #define SCPYN(a, b) strncpy(a, b, sizeof(a)) |
| 97 | char wtmpf[] = "/usr/adm/wtmp"; |
| 98 | struct utmp wtmp; |
| 99 | |
| 100 | markdown() |
| 101 | { |
| 102 | register f = open(wtmpf, 1); |
| 103 | if (f >= 0) { |
| 104 | lseek(f, 0L, 2); |
| 105 | SCPYN(wtmp.ut_line, "~"); |
| 106 | SCPYN(wtmp.ut_name, "shutdown"); |
| 107 | SCPYN(wtmp.ut_host, ""); |
| 108 | time(&wtmp.ut_time); |
| 109 | write(f, (char *)&wtmp, sizeof(wtmp)); |
| 110 | close(f); |
| 111 | } |
| 112 | } |
| 113 | |
| 114 | char *days[] = { |
| 115 | "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" |
| 116 | }; |
| 117 | |
| 118 | char *months[] = { |
| 119 | "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", |
| 120 | "Oct", "Nov", "Dec" |
| 121 | }; |
| 122 | |
| 123 | log_entry() |
| 124 | { |
| 125 | FILE *fp; |
| 126 | struct tm *tm, *localtime(); |
| 127 | time_t now; |
| 128 | |
| 129 | time(&now); |
| 130 | tm = localtime(&now); |
| 131 | fp = fopen(SHUTDOWNLOG, "a"); |
| 132 | if (fp == 0) |
| 133 | return; |
| 134 | fseek(fp, 0L, 2); |
| 135 | fprintf(fp, "%02d:%02d %s %s %2d, %4d. Halted for reboot.\n", tm->tm_hour, |
| 136 | tm->tm_min, days[tm->tm_wday], months[tm->tm_mon], |
| 137 | tm->tm_mday, tm->tm_year + 1900); |
| 138 | fclose(fp); |
| 139 | } |