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3c46fcae | 1 | /* |
2 | * $Source$ | |
3 | * $Author$ | |
4 | * $Header$ | |
5 | * | |
6 | * Copyright (C) 1987 by the Massachusetts Institute of Technology | |
c801de4c | 7 | * For copying and distribution information, please see the file |
8 | * <mit-copyright.h>. | |
3c46fcae | 9 | * |
2ce085d2 | 10 | * This program starts the moira server in a "clean" environment. |
3c46fcae | 11 | * and then waits for it to exit. |
5eaef520 | 12 | * |
3c46fcae | 13 | */ |
14 | ||
15 | #ifndef lint | |
a8db6c01 | 16 | static char *rcsid_mr_starter_c = "$Header$"; |
3c46fcae | 17 | #endif lint |
18 | ||
c801de4c | 19 | #include <mit-copyright.h> |
960b073b | 20 | #include <errno.h> |
3c46fcae | 21 | #include <stdio.h> |
960b073b | 22 | #include <string.h> |
3c46fcae | 23 | #include <sys/types.h> |
24 | #include <sys/file.h> | |
25 | #include <sys/wait.h> | |
26 | #include <sys/signal.h> | |
27 | #include <sys/ioctl.h> | |
960b073b | 28 | #include <time.h> |
03c05291 | 29 | #include <fcntl.h> |
c666a149 | 30 | #include <sys/resource.h> |
31 | #include <moira_site.h> | |
03c05291 | 32 | |
3c46fcae | 33 | |
2ce085d2 | 34 | #define PROG "moirad" |
3c46fcae | 35 | |
36 | int rdpipe[2]; | |
c666a149 | 37 | extern int errno; |
03c05291 | 38 | char *whoami; |
3c46fcae | 39 | |
5eaef520 | 40 | void cleanup(void) |
3c46fcae | 41 | { |
5eaef520 | 42 | int stat, serrno = errno; |
43 | char buf[BUFSIZ]; | |
44 | ||
45 | buf[0] = '\0'; | |
46 | ||
47 | while (waitpid(-1, &stat, WNOHANG) > 0) | |
48 | { | |
49 | if (WIFEXITED(stat)) | |
50 | { | |
51 | if (WEXITSTATUS(stat)) | |
52 | { | |
53 | sprintf(buf, "exited with code %d\n", WEXITSTATUS(stat)); | |
54 | critical_alert("startmoira", "%s", buf); | |
55 | } | |
3c46fcae | 56 | } |
5eaef520 | 57 | if (WIFSIGNALED(stat)) |
58 | { | |
59 | sprintf(buf, "exited on signal %d%s\n", WTERMSIG(stat), | |
60 | (WCOREDUMP(stat) ? "; Core dumped" : "")); | |
61 | if (WCOREDUMP(stat)) | |
62 | critical_alert("startmoira", "%s", buf); | |
63 | } | |
64 | write(rdpipe[1], buf, strlen(buf)); | |
65 | close(rdpipe[1]); | |
66 | } | |
67 | errno = serrno; | |
3c46fcae | 68 | } |
69 | ||
5eaef520 | 70 | int main(int argc, char *argv[]) |
3c46fcae | 71 | { |
5eaef520 | 72 | char buf[BUFSIZ]; |
73 | FILE *log, *prog; | |
74 | int logf, inf, i, done, pid, tty; | |
75 | struct rlimit rl; | |
76 | ||
77 | extern int errno; | |
78 | extern char *sys_errlist[]; | |
3c46fcae | 79 | |
5eaef520 | 80 | struct sigaction action; |
81 | int nfds; | |
82 | ||
83 | whoami = argv[0]; | |
84 | ||
85 | getrlimit(RLIMIT_NOFILE, &rl); | |
86 | nfds = rl.rlim_cur; | |
87 | ||
88 | action.sa_handler = cleanup; | |
89 | action.sa_flags = 0; | |
90 | sigemptyset(&action.sa_mask); | |
91 | sigaction(SIGCHLD, &action, NULL); | |
92 | ||
59ec8dae | 93 | sprintf(buf, "%s/moira.log", MOIRA_DIR); |
5eaef520 | 94 | logf = open(buf, O_CREAT|O_WRONLY|O_APPEND, 0640); |
95 | if (logf < 0) | |
96 | { | |
97 | perror(buf); | |
98 | exit(1); | |
99 | } | |
100 | inf = open("/dev/null", O_RDONLY , 0); | |
101 | if (inf < 0) | |
102 | { | |
103 | perror("/dev/null"); | |
104 | exit(1); | |
105 | } | |
106 | pipe(rdpipe); | |
107 | if (fork()) | |
108 | exit(0); | |
109 | chdir("/"); | |
110 | close(0); | |
111 | close(1); | |
112 | close(2); | |
113 | dup2(inf, 0); | |
114 | dup2(inf, 1); | |
115 | dup2(inf, 2); | |
116 | ||
117 | setpgrp(); | |
118 | sprintf(buf, "%s/%s", BIN_DIR, PROG); | |
119 | ||
120 | if ((pid = fork()) == 0) | |
121 | { | |
122 | dup2(inf, 0); | |
123 | dup2(rdpipe[1], 1); | |
124 | dup2(1, 2); | |
125 | for (i = 3; i < nfds; i++) | |
126 | close(i); | |
127 | execl(buf, PROG, 0); | |
128 | perror("cannot run moirad"); | |
129 | exit(1); | |
130 | } | |
131 | if (pid < 0) | |
132 | { | |
133 | perror("moira_starter"); | |
134 | exit(1); | |
135 | } | |
136 | ||
137 | log = fdopen(logf, "w"); | |
138 | prog = fdopen(rdpipe[0], "r"); | |
139 | ||
140 | do | |
141 | { | |
142 | char *time_s; | |
143 | long foo; | |
144 | ||
145 | done = 0; | |
146 | errno = 0; | |
147 | if (!fgets(buf, BUFSIZ, prog)) | |
148 | { | |
149 | if (errno && errno != EINTR) | |
150 | { | |
151 | strcpy(buf, "Unable to read from program: "); | |
152 | strcat(buf, sys_errlist[errno]); | |
153 | strcat(buf, "\n"); | |
154 | } | |
155 | else | |
156 | break; | |
157 | } | |
158 | time(&foo); | |
159 | time_s = ctime(&foo) + 4; | |
160 | time_s[strlen(time_s) - 6] = '\0'; | |
161 | fprintf(log, "%s %s", time_s, buf); | |
162 | fflush(log); | |
163 | } | |
164 | while (!done); | |
165 | exit(0); | |
3c46fcae | 166 | } |