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1 | /* | |
2 | * $Source$ | |
3 | * $Author$ | |
4 | * $Header$ | |
5 | * | |
6 | * Copyright (C) 1987 by the Massachusetts Institute of Technology | |
7 | * | |
8 | * This program starts the sms server in a "clean" environment. | |
9 | * and then waits for it to exit. | |
10 | * | |
11 | * $Log$ | |
12 | * Revision 1.2 1987-06-02 20:08:16 wesommer | |
13 | * Changed logging, location of daemon to run. | |
14 | * | |
15 | * Revision 1.1 87/06/01 03:35:33 wesommer | |
16 | * Initial revision | |
17 | * | |
18 | */ | |
19 | ||
20 | #ifndef lint | |
21 | static char *rcsid_sms_starter_c = "$Header$"; | |
22 | #endif lint | |
23 | ||
24 | #include <stdio.h> | |
25 | #include <strings.h> | |
26 | #include <sys/types.h> | |
27 | #include <sys/file.h> | |
28 | #include <sys/wait.h> | |
29 | #include <sys/signal.h> | |
30 | #include <sys/ioctl.h> | |
31 | ||
32 | #define SMS_LOG_FILE "/u1/sms/sms.log" | |
33 | ||
34 | #define SMS_PROG "/u1/sms/server/smsd" | |
35 | ||
36 | int rdpipe[2]; | |
37 | char *sigdescr[] = { | |
38 | 0, | |
39 | "hangup", | |
40 | "interrupt", | |
41 | "quit", | |
42 | "illegal instruction", | |
43 | "trace/BPT trap", | |
44 | "IOT trap", | |
45 | "EMT trap", | |
46 | "floating exception", | |
47 | "kill", | |
48 | "bus error", | |
49 | "segmentation violation", | |
50 | "bad system call", | |
51 | "broken pipe", | |
52 | "alarm clock", | |
53 | "termination", | |
54 | "urgent I/O condition", | |
55 | "stopped", | |
56 | "stopped", | |
57 | "continued", | |
58 | "child exited", | |
59 | "stopped (tty input)", | |
60 | "stopped (tty output)", | |
61 | "I/O possible", | |
62 | "cputime limit exceeded", | |
63 | "filesize limit exceeded", | |
64 | "virtual timer expired", | |
65 | "profiling timer expired", | |
66 | "window size changed", | |
67 | "signal 29", | |
68 | "user defined signal 1", | |
69 | "user defined signal 2", | |
70 | "signal 32" | |
71 | }; | |
72 | ||
73 | cleanup() | |
74 | { | |
75 | union wait stat; | |
76 | char buf[BUFSIZ]; | |
77 | extern int errno; | |
78 | int serrno = errno; | |
79 | ||
80 | buf[0]='\0'; | |
81 | ||
82 | while (wait3(&stat, WNOHANG, 0) > 0) { | |
83 | if (WIFEXITED(stat)) { | |
84 | if (stat.w_retcode) | |
85 | sprintf(buf, | |
86 | "exited with code %d\n", | |
87 | stat.w_retcode); | |
88 | } | |
89 | if (WIFSIGNALED(stat)) { | |
90 | sprintf(buf, "exited on %s signal%s\n", | |
91 | sigdescr[stat.w_termsig], | |
92 | (stat.w_coredump?"; Core dumped":0)); | |
93 | } | |
94 | write(rdpipe[1], buf, strlen(buf)); | |
95 | close(rdpipe[1]); | |
96 | } | |
97 | errno = serrno; | |
98 | } | |
99 | ||
100 | main(argc, argv) | |
101 | { | |
102 | char buf[BUFSIZ]; | |
103 | FILE *log, *prog; | |
104 | int logf, inf, i, done, pid, tty; | |
105 | ||
106 | extern int errno; | |
107 | extern char *sys_errlist[]; | |
108 | ||
109 | int nfds = getdtablesize(); | |
110 | ||
111 | setreuid(0); | |
112 | signal(SIGCHLD, cleanup); | |
113 | ||
114 | logf = open(SMS_LOG_FILE, O_CREAT|O_WRONLY|O_APPEND, 0640); | |
115 | if (logf<0) { | |
116 | perror(SMS_LOG_FILE); | |
117 | exit(1); | |
118 | } | |
119 | inf = open("/dev/null", O_RDONLY , 0); | |
120 | if (inf < 0) { | |
121 | perror("/dev/null"); | |
122 | exit(1); | |
123 | } | |
124 | pipe(rdpipe); | |
125 | if (fork()) { | |
126 | exit(); | |
127 | } | |
128 | chdir("/"); | |
129 | close(0); | |
130 | close(1); | |
131 | close(2); | |
132 | dup2(inf, 0); | |
133 | dup2(inf, 1); | |
134 | dup2(inf, 2); | |
135 | ||
136 | tty = open("/dev/tty"); | |
137 | ioctl(tty, TIOCNOTTY, 0); | |
138 | close(tty); | |
139 | ||
140 | if ((pid = fork()) == 0) { | |
141 | ||
142 | dup2(inf, 0); | |
143 | dup2(rdpipe[1], 1); | |
144 | dup2(1,2); | |
145 | for (i = 3; i <nfds; i++) close(i); | |
146 | execl(SMS_PROG, "smsd", 0); | |
147 | perror("cannot run smsd"); | |
148 | exit(1); | |
149 | } | |
150 | if (pid<0) { | |
151 | perror("sms_starter"); | |
152 | exit(1); | |
153 | } | |
154 | ||
155 | log = fdopen(logf, "w"); | |
156 | prog = fdopen(rdpipe[0], "r"); | |
157 | ||
158 | ||
159 | do { | |
160 | char *time_s; | |
161 | extern char *ctime(); | |
162 | long foo; | |
163 | ||
164 | done = 0; | |
165 | errno = 0; | |
166 | if (fgets(buf, BUFSIZ, prog) == NULL) { | |
167 | if (errno) { | |
168 | strcpy(buf, "Unable to read from program: "); | |
169 | strcat(buf, sys_errlist[errno]); | |
170 | strcat(buf, "\n"); | |
171 | } else break; | |
172 | } | |
173 | time(&foo); | |
174 | time_s = ctime(&foo)+4; | |
175 | time_s[strlen(time_s)-6]='\0'; | |
176 | fprintf(log, "%s <%d> %s", time_s, pid, buf); | |
177 | fflush(log); | |
178 | } while (!done); | |
179 | exit(0); | |
180 | } | |
181 | ||
182 | ||
183 | ||
184 |