Commit | Line | Data |
---|---|---|
37c640e2 | 1 | #ifndef lint |
ce4fd43b | 2 | static char *sccsid = "@(#)halt.c 4.9 (Berkeley) %G%"; |
37c640e2 SL |
3 | #endif |
4 | ||
a2588a32 BJ |
5 | /* |
6 | * Halt | |
7 | */ | |
8 | #include <stdio.h> | |
9 | #include <sys/reboot.h> | |
ccb2b0b8 | 10 | #include <sys/types.h> |
ce4fd43b | 11 | #include <sys/time.h> |
fe6cb666 BJ |
12 | #include <errno.h> |
13 | #include <signal.h> | |
a2588a32 | 14 | |
ccb2b0b8 BJ |
15 | #define SHUTDOWNLOG "/usr/adm/shutdownlog" |
16 | ||
a2588a32 BJ |
17 | main(argc, argv) |
18 | int argc; | |
19 | char **argv; | |
20 | { | |
21 | int howto; | |
037df60e | 22 | char *ttyn = (char *)ttyname(2); |
fe6cb666 | 23 | register i; |
821f38b7 | 24 | register qflag = 0; |
a2588a32 BJ |
25 | |
26 | howto = RB_HALT; | |
27 | argc--, argv++; | |
28 | while (argc > 0) { | |
29 | if (!strcmp(*argv, "-n")) | |
30 | howto |= RB_NOSYNC; | |
037df60e BJ |
31 | else if (!strcmp(*argv, "-y")) |
32 | ttyn = 0; | |
fe6cb666 BJ |
33 | else if (!strcmp(*argv, "-q")) |
34 | qflag++; | |
a2588a32 BJ |
35 | else { |
36 | fprintf(stderr, "usage: halt [ -n ]\n"); | |
37 | exit(1); | |
38 | } | |
39 | argc--, argv++; | |
40 | } | |
037df60e BJ |
41 | if (ttyn && *(ttyn+strlen("/dev/tty")) == 'd') { |
42 | fprintf(stderr, "halt: dangerous on a dialup; use ``halt -y'' if you are really sure\n"); | |
43 | exit(1); | |
44 | } | |
fe6cb666 | 45 | |
4f509481 | 46 | signal(SIGHUP, SIG_IGN); /* for network connections */ |
fe6cb666 BJ |
47 | if (kill(1, SIGTSTP) == -1) { |
48 | fprintf(stderr, "reboot: can't idle init\n"); | |
49 | exit(1); | |
50 | } | |
51 | ||
52 | if (!qflag) for (i = 1; ; i++) { | |
53 | if (kill(-1, SIGKILL) == -1) { | |
54 | extern int errno; | |
55 | ||
56 | if (errno == ESRCH) | |
57 | break; | |
58 | ||
59 | perror("reboot: kill"); | |
60 | kill(1, SIGHUP); | |
61 | exit(1); | |
62 | } | |
63 | if (i > 5) { | |
64 | fprintf(stderr, "CAUTION: some process(es) wouldn't die\n"); | |
65 | break; | |
66 | } | |
67 | setalarm(2 * i); | |
68 | pause(); | |
69 | } | |
70 | ||
ccb2b0b8 BJ |
71 | if ((howto & RB_NOSYNC) == 0) |
72 | log_entry(); | |
fe6cb666 BJ |
73 | if (!qflag) { |
74 | if ((howto & RB_NOSYNC)==0) { | |
75 | markdown(); | |
76 | sync(); | |
77 | sync(); | |
78 | } | |
79 | setalarm(5); | |
80 | pause(); | |
81 | } | |
a2588a32 BJ |
82 | syscall(55, howto); |
83 | perror("reboot"); | |
84 | } | |
fe6cb666 BJ |
85 | |
86 | dingdong() | |
87 | { | |
88 | /* RRRIIINNNGGG RRRIIINNNGGG */ | |
89 | } | |
90 | ||
91 | setalarm(n) | |
92 | { | |
93 | signal(SIGALRM, dingdong); | |
94 | alarm(n); | |
95 | } | |
96 | ||
97 | #include <utmp.h> | |
98 | #define SCPYN(a, b) strncpy(a, b, sizeof(a)) | |
99 | char wtmpf[] = "/usr/adm/wtmp"; | |
100 | struct utmp wtmp; | |
101 | ||
102 | markdown() | |
103 | { | |
104 | register f = open(wtmpf, 1); | |
105 | if (f >= 0) { | |
106 | lseek(f, 0L, 2); | |
107 | SCPYN(wtmp.ut_line, "~"); | |
108 | SCPYN(wtmp.ut_name, "shutdown"); | |
37c640e2 | 109 | SCPYN(wtmp.ut_host, ""); |
fe6cb666 BJ |
110 | time(&wtmp.ut_time); |
111 | write(f, (char *)&wtmp, sizeof(wtmp)); | |
112 | close(f); | |
113 | } | |
114 | } | |
ccb2b0b8 BJ |
115 | |
116 | char *days[] = { | |
117 | "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" | |
118 | }; | |
119 | ||
120 | char *months[] = { | |
121 | "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", | |
122 | "Oct", "Nov", "Dec" | |
123 | }; | |
124 | ||
125 | log_entry() | |
126 | { | |
127 | FILE *fp; | |
128 | struct tm *tm, *localtime(); | |
129 | time_t now; | |
130 | ||
131 | time(&now); | |
132 | tm = localtime(&now); | |
133 | fp = fopen(SHUTDOWNLOG, "a"); | |
31b4d3e1 BJ |
134 | if (fp == NULL) |
135 | return; | |
ccb2b0b8 BJ |
136 | fseek(fp, 0L, 2); |
137 | fprintf(fp, "%02d:%02d %s %s %2d, %4d. Halted.\n", tm->tm_hour, | |
138 | tm->tm_min, days[tm->tm_wday], months[tm->tm_mon], | |
139 | tm->tm_mday, tm->tm_year + 1900); | |
140 | fclose(fp); | |
141 | } |