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70fb4419 WJ |
1 | /* |
2 | * Copyright (c) 1980, 1986 The Regents of the University of California. | |
3 | * All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms, with or without | |
6 | * modification, are permitted provided that the following conditions | |
7 | * are met: | |
8 | * 1. Redistributions of source code must retain the above copyright | |
9 | * notice, this list of conditions and the following disclaimer. | |
10 | * 2. Redistributions in binary form must reproduce the above copyright | |
11 | * notice, this list of conditions and the following disclaimer in the | |
12 | * documentation and/or other materials provided with the distribution. | |
13 | * 3. All advertising materials mentioning features or use of this software | |
14 | * must display the following acknowledgement: | |
15 | * This product includes software developed by the University of | |
16 | * California, Berkeley and its contributors. | |
17 | * 4. Neither the name of the University nor the names of its contributors | |
18 | * may be used to endorse or promote products derived from this software | |
19 | * without specific prior written permission. | |
20 | * | |
21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
31 | * SUCH DAMAGE. | |
32 | */ | |
33 | ||
34 | #ifndef lint | |
35 | char copyright[] = | |
36 | "@(#) Copyright (c) 1980, 1986 The Regents of the University of California.\n\ | |
37 | All rights reserved.\n"; | |
38 | #endif /* not lint */ | |
39 | ||
40 | #ifndef lint | |
41 | static char sccsid[] = "@(#)reboot.c 5.11 (Berkeley) 2/27/91"; | |
42 | #endif /* not lint */ | |
43 | ||
44 | #include <sys/types.h> | |
45 | #include <sys/time.h> | |
46 | #include <sys/syslog.h> | |
47 | #include <sys/syscall.h> | |
48 | #include <sys/reboot.h> | |
49 | #include <sys/signal.h> | |
50 | #include <pwd.h> | |
51 | #include <stdio.h> | |
52 | #include <errno.h> | |
53 | ||
54 | main(argc, argv) | |
55 | int argc; | |
56 | char **argv; | |
57 | { | |
58 | int howto; | |
59 | register char *argp; | |
60 | register i; | |
61 | register ok = 0; | |
62 | register qflag = 0; | |
63 | int needlog = 1; | |
64 | char *user, *getlogin(); | |
65 | struct passwd *pw; | |
66 | ||
67 | openlog("reboot", 0, LOG_AUTH); | |
68 | argc--, argv++; | |
69 | howto = 0; | |
70 | while (argc > 0) { | |
71 | if (!strcmp(*argv, "-q")) | |
72 | qflag++; | |
73 | else if (!strcmp(*argv, "-n")) | |
74 | howto |= RB_NOSYNC; | |
75 | else if (!strcmp(*argv, "-l")) | |
76 | needlog = 0; | |
77 | else { | |
78 | fprintf(stderr, | |
79 | "usage: reboot [ -n ][ -q ]\n"); | |
80 | exit(1); | |
81 | } | |
82 | argc--, argv++; | |
83 | } | |
84 | ||
85 | if (needlog) { | |
86 | user = getlogin(); | |
87 | if (user == (char *)0 && (pw = getpwuid(getuid()))) | |
88 | user = pw->pw_name; | |
89 | if (user == (char *)0) | |
90 | user = "root"; | |
91 | syslog(LOG_CRIT, "rebooted by %s", user); | |
92 | } | |
93 | ||
94 | signal(SIGHUP, SIG_IGN); /* for remote connections */ | |
95 | if (kill(1, SIGTSTP) == -1) { | |
96 | fprintf(stderr, "reboot: can't idle init\n"); | |
97 | exit(1); | |
98 | } | |
99 | sleep(1); | |
100 | (void) kill(-1, SIGTERM); /* one chance to catch it */ | |
101 | sleep(5); | |
102 | ||
103 | if (!qflag) for (i = 1; ; i++) { | |
104 | if (kill(-1, SIGKILL) == -1) { | |
105 | extern int errno; | |
106 | ||
107 | if (errno == ESRCH) | |
108 | break; | |
109 | ||
110 | perror("reboot: kill"); | |
111 | kill(1, SIGHUP); | |
112 | exit(1); | |
113 | } | |
114 | if (i > 5) { | |
115 | fprintf(stderr, | |
116 | "CAUTION: some process(es) wouldn't die\n"); | |
117 | break; | |
118 | } | |
119 | setalarm(2 * i); | |
120 | pause(); | |
121 | } | |
122 | ||
123 | if (!qflag && (howto & RB_NOSYNC) == 0) { | |
124 | logwtmp("~", "shutdown", ""); | |
125 | sync(); | |
126 | setalarm(5); | |
127 | pause(); | |
128 | } | |
129 | syscall(SYS_reboot, howto); | |
130 | perror("reboot"); | |
131 | kill(1, SIGHUP); | |
132 | exit(1); | |
133 | } | |
134 | ||
135 | void | |
136 | dingdong() | |
137 | { | |
138 | /* RRRIIINNNGGG RRRIIINNNGGG */ | |
139 | } | |
140 | ||
141 | setalarm(n) | |
142 | int n; | |
143 | { | |
144 | signal(SIGALRM, dingdong); | |
145 | alarm(n); | |
146 | } |