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1 | /* | |
2 | * $Source$ | |
3 | * $Author$ | |
4 | * $Header$ | |
5 | * | |
6 | * Copyright (C) 1987 by the Massachusetts Institute of Technology | |
7 | * For copying and distribution information, please see the file | |
8 | * <mit-copyright.h>. | |
9 | * | |
10 | * This program starts the user registration server | |
11 | * in a "clean" environment, and then waits for it to exit. | |
12 | */ | |
13 | ||
14 | #ifndef lint | |
15 | static char *rcsid_mr_starter_c = "$Header$"; | |
16 | #endif lint | |
17 | ||
18 | #include <mit-copyright.h> | |
19 | #include <stdio.h> | |
20 | #include <strings.h> | |
21 | #include <sys/types.h> | |
22 | #include <sys/file.h> | |
23 | #include <sys/wait.h> | |
24 | #include <sys/signal.h> | |
25 | #include <sys/ioctl.h> | |
26 | #include <moira_site.h> | |
27 | ||
28 | #define PROG "reg_svr" | |
29 | ||
30 | int rdpipe[2]; | |
31 | extern char *sys_siglist[]; | |
32 | ||
33 | cleanup() | |
34 | { | |
35 | union wait stat; | |
36 | char buf[BUFSIZ]; | |
37 | extern int errno; | |
38 | int serrno = errno; | |
39 | ||
40 | buf[0]='\0'; | |
41 | ||
42 | while (wait3(&stat, WNOHANG, 0) > 0) { | |
43 | if (WIFEXITED(stat)) { | |
44 | if (stat.w_retcode) | |
45 | sprintf(buf, | |
46 | "exited with code %d\n", | |
47 | stat.w_retcode); | |
48 | } | |
49 | if (WIFSIGNALED(stat)) { | |
50 | sprintf(buf, "exited on %s signal%s\n", | |
51 | sys_siglist[stat.w_termsig], | |
52 | (stat.w_coredump?"; Core dumped":0)); | |
53 | } | |
54 | write(rdpipe[1], buf, strlen(buf)); | |
55 | close(rdpipe[1]); | |
56 | } | |
57 | errno = serrno; | |
58 | } | |
59 | ||
60 | main(argc, argv) | |
61 | { | |
62 | char buf[BUFSIZ]; | |
63 | FILE *log, *prog; | |
64 | int logf, inf, i, done, pid, tty; | |
65 | ||
66 | extern int errno; | |
67 | extern char *sys_errlist[]; | |
68 | ||
69 | int nfds = getdtablesize(); | |
70 | ||
71 | setreuid(0); | |
72 | signal(SIGCHLD, cleanup); | |
73 | ||
74 | sprintf(buf, "%s/%s.log", SMS_DIR, PROG); | |
75 | logf = open(buf, O_CREAT|O_WRONLY|O_APPEND, 0640); | |
76 | if (logf<0) { | |
77 | perror(buf); | |
78 | exit(1); | |
79 | } | |
80 | inf = open("/dev/null", O_RDONLY , 0); | |
81 | if (inf < 0) { | |
82 | perror("/dev/null"); | |
83 | exit(1); | |
84 | } | |
85 | pipe(rdpipe); | |
86 | if (fork()) { | |
87 | exit(0); | |
88 | } | |
89 | chdir("/"); | |
90 | close(0); | |
91 | close(1); | |
92 | close(2); | |
93 | dup2(inf, 0); | |
94 | dup2(inf, 1); | |
95 | dup2(inf, 2); | |
96 | ||
97 | tty = open("/dev/tty"); | |
98 | ioctl(tty, TIOCNOTTY, 0); | |
99 | close(tty); | |
100 | sprintf(buf, "%s/%s", BIN_DIR, PROG); | |
101 | ||
102 | if ((pid = fork()) == 0) { | |
103 | ||
104 | dup2(inf, 0); | |
105 | dup2(rdpipe[1], 1); | |
106 | dup2(1,2); | |
107 | for (i = 3; i <nfds; i++) close(i); | |
108 | execl(buf, PROG, 0); | |
109 | perror("cannot run reg_svr"); | |
110 | exit(1); | |
111 | } | |
112 | if (pid<0) { | |
113 | perror("startreg"); | |
114 | exit(1); | |
115 | } | |
116 | ||
117 | log = fdopen(logf, "w"); | |
118 | prog = fdopen(rdpipe[0], "r"); | |
119 | ||
120 | ||
121 | do { | |
122 | char *time_s; | |
123 | extern char *ctime(); | |
124 | long foo; | |
125 | ||
126 | done = 0; | |
127 | errno = 0; | |
128 | if (fgets(buf, BUFSIZ, prog) == NULL) { | |
129 | if (errno) { | |
130 | strcpy(buf, "Unable to read from program: "); | |
131 | strcat(buf, sys_errlist[errno]); | |
132 | strcat(buf, "\n"); | |
133 | } else break; | |
134 | } | |
135 | time(&foo); | |
136 | time_s = ctime(&foo)+4; | |
137 | time_s[strlen(time_s)-6]='\0'; | |
138 | fprintf(log, "%s <%d> %s", time_s, pid, buf); | |
139 | fflush(log); | |
140 | } while (!done); | |
141 | exit(0); | |
142 | } | |
143 | ||
144 | ||
145 | ||
146 |