projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| e1fc0b0e | 1 | static char *sccsid = "@(#)reboot.c 4.5 (Berkeley) %G%"; |
| cf5fda66 BJ |
2 | /* |
| 3 | * Reboot | |
| 4 | */ | |
| fe6cb666 BJ |
5 | #include <stdio.h> |
| 6 | #include <sys/reboot.h> | |
| 7 | #include <errno.h> | |
| 8 | #include <signal.h> | |
| 3111ba40 BJ |
9 | #include <sys/types.h> |
| 10 | #include <time.h> | |
| 11 | ||
| 12 | #define SHUTDOWNLOG "/usr/adm/shutdownlog" | |
| cf5fda66 BJ |
13 | |
| 14 | main(argc, argv) | |
| 15 | int argc; | |
| 16 | char **argv; | |
| 17 | { | |
| 18 | int howto; | |
| 19 | register char *argp; | |
| fe6cb666 BJ |
20 | register i; |
| 21 | register ok = 0; | |
| 22 | register qflag = 0; | |
| cf5fda66 BJ |
23 | |
| 24 | argc--, argv++; | |
| 25 | howto = 0; | |
| 26 | while (argc > 0) { | |
| fe6cb666 BJ |
27 | if (!strcmp(*argv, "-q")) |
| 28 | qflag++; | |
| cf5fda66 BJ |
29 | else if (!strcmp(*argv, "-n")) |
| 30 | howto |= RB_NOSYNC; | |
| cf5fda66 BJ |
31 | else { |
| 32 | fprintf(stderr, | |
| fe6cb666 | 33 | "usage: reboot [ -n ][ -q ]\n"); |
| cf5fda66 BJ |
34 | exit(1); |
| 35 | } | |
| 36 | argc--, argv++; | |
| 37 | } | |
| fe6cb666 BJ |
38 | |
| 39 | if (kill(1, SIGTSTP) == -1) { | |
| 40 | fprintf(stderr, "reboot: can't idle init\n"); | |
| 41 | exit(1); | |
| 42 | } | |
| 43 | ||
| 44 | if (!qflag) for (i = 1; ; i++) { | |
| 45 | if (kill(-1, SIGKILL) == -1) { | |
| 46 | extern int errno; | |
| 47 | ||
| 48 | if (errno == ESRCH) | |
| 49 | break; | |
| 50 | ||
| 51 | perror("reboot: kill"); | |
| 52 | kill(1, SIGHUP); | |
| 53 | exit(1); | |
| 54 | } | |
| 55 | if (i > 5) { | |
| 56 | fprintf(stderr, "CAUTION: some process(es) wouldn't die\n"); | |
| 57 | break; | |
| 58 | } | |
| 59 | setalarm(2 * i); | |
| 60 | pause(); | |
| 61 | } | |
| 62 | ||
| e8d9b3bd BJ |
63 | if ((howto & RB_NOSYNC) == 0) |
| 64 | log_entry(); | |
| fe6cb666 BJ |
65 | if (!qflag) { |
| 66 | if (!(howto & RB_NOSYNC)) { | |
| 67 | markdown(); | |
| 68 | sync(); | |
| 69 | sync(); | |
| 70 | } | |
| 71 | setalarm(5); | |
| 72 | pause(); | |
| 73 | } | |
| cf5fda66 BJ |
74 | syscall(55, howto); |
| 75 | perror("reboot"); | |
| fe6cb666 BJ |
76 | kill(1, SIGHUP); |
| 77 | exit(1); | |
| 78 | } | |
| 79 | ||
| 80 | dingdong() | |
| 81 | { | |
| 82 | /* RRRIIINNNGGG RRRIIINNNGGG */ | |
| 83 | } | |
| 84 | ||
| 85 | setalarm(n) | |
| 86 | { | |
| 87 | signal(SIGALRM, dingdong); | |
| 88 | alarm(n); | |
| 89 | } | |
| 90 | ||
| 91 | #include <utmp.h> | |
| 92 | #define SCPYN(a, b) strncpy(a, b, sizeof(a)) | |
| 93 | char wtmpf[] = "/usr/adm/wtmp"; | |
| 94 | struct utmp wtmp; | |
| 95 | ||
| 96 | markdown() | |
| 97 | { | |
| 98 | register f = open(wtmpf, 1); | |
| 99 | if (f >= 0) { | |
| 100 | lseek(f, 0L, 2); | |
| 101 | SCPYN(wtmp.ut_line, "~"); | |
| 102 | SCPYN(wtmp.ut_name, "shutdown"); | |
| 103 | time(&wtmp.ut_time); | |
| 104 | write(f, (char *)&wtmp, sizeof(wtmp)); | |
| 105 | close(f); | |
| 106 | } | |
| cf5fda66 | 107 | } |
| 3111ba40 BJ |
108 | |
| 109 | char *days[] = { | |
| 110 | "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" | |
| 111 | }; | |
| 112 | ||
| 113 | char *months[] = { | |
| 114 | "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", | |
| 115 | "Oct", "Nov", "Dec" | |
| 116 | }; | |
| 117 | ||
| 118 | log_entry() | |
| 119 | { | |
| 120 | FILE *fp; | |
| 121 | struct tm *tm, *localtime(); | |
| 122 | time_t now; | |
| 123 | ||
| 124 | time(&now); | |
| 125 | tm = localtime(&now); | |
| 126 | fp = fopen(SHUTDOWNLOG, "a"); | |
| e1fc0b0e BJ |
127 | if (fp == 0) |
| 128 | return; | |
| 3111ba40 BJ |
129 | fseek(fp, 0L, 2); |
| 130 | fprintf(fp, "%02d:%02d %s %s %2d, %4d. Halted for reboot.\n", tm->tm_hour, | |
| 131 | tm->tm_min, days[tm->tm_wday], months[tm->tm_mon], | |
| 132 | tm->tm_mday, tm->tm_year + 1900); | |
| 133 | fclose(fp); | |
| 134 | } |