source: trunk/athena/etc/xdm/xlogin/timeout.c @ 7301

Revision 7301, 2.6 KB checked in by vrt, 31 years ago (diff)
had to play with the includes for timeout to compile under the RS6000
Line 
1/* $Header: /afs/dev.mit.edu/source/repository/athena/etc/xdm/xlogin/timeout.c,v 1.8 1994-05-02 11:01:00 vrt Exp $ */
2
3#include <mit-copyright.h>
4#include <stdio.h>
5#include <signal.h>
6#include <sys/types.h>
7#include <sys/stat.h>
8#include <sys/time.h>
9#ifdef _AIX
10#define _POSIX_SOURCE
11#undef _BSD
12#endif
13#include <sys/wait.h>
14#ifdef _AIX
15#undef _POSIX_SOURCE
16#endif
17
18#ifndef FALSE
19#define FALSE 0
20#define TRUE (!FALSE)
21#endif
22
23#ifndef __STDC__
24#define volatile
25#endif
26
27int app_pid;
28volatile int app_running;
29int app_exit_status;
30main(argc, argv)
31int argc;
32char **argv;
33{
34    int maxidle, ttl;
35    char *name, msg[512];
36    struct stat stbuf;
37    struct timeval now, start;
38    void child(), wakeup();
39#ifdef POSIX
40    struct sigaction sigact;
41    sigemptyset(&sigact.sa_mask);
42    sigact.sa_flags = 0;
43#endif
44
45    name = *argv++;
46    if (argc < 3) {
47        fprintf(stderr, "usage: %s max-idle-time application command line...\n",
48                name);
49        exit(1);
50    }
51    maxidle = atoi(*argv++);
52    argc -= 2;
53
54    app_running = TRUE;
55#ifdef POSIX
56     sigact.sa_handler = child;
57    sigaction(SIGCHLD, &sigact, NULL);
58    sigact.sa_handler = wakeup;
59    sigaction(SIGALRM, &sigact, NULL);
60#else
61    signal(SIGCHLD, child);
62    signal(SIGALRM, wakeup);
63#endif
64    /* launch application */
65    switch (app_pid = fork()) {
66    case 0:
67        execvp(argv[0], argv);
68        sprintf(msg, "%s: failed to exec application %s\n", name, argv[0]);
69        perror(msg);
70        exit(1);
71    case -1:
72        sprintf(msg, "%s: failed to fork to create application\n", name);
73        perror(msg);
74        exit(1);
75    default:
76        break;
77    }
78
79    gettimeofday(&start, NULL);
80    ttl = maxidle;
81
82    /* wait for application to die or idle-time to be reached */
83    while (app_running) {
84        alarm(ttl);
85        sigpause(0);
86        if (!app_running)
87          break;
88        fstat(1, &stbuf);
89        gettimeofday(&now, NULL);
90        ttl = start.tv_sec + maxidle - now.tv_sec;
91        /* only check idle time if we've been running at least that long */
92        if (ttl <= 0)
93          ttl = stbuf.st_atime + maxidle - now.tv_sec;
94        if (ttl <= 0) {
95            fprintf(stderr, "\nMAX IDLE TIME REACHED.\n");
96            kill(app_pid, SIGINT);
97            exit(0);
98        }
99    }
100    exit(app_exit_status);
101}
102
103void child()
104{
105#ifdef POSIX
106    int status;
107#else
108    union wait status;
109#endif
110    int pid;
111
112#ifdef POSIX
113    pid = waitpid(-1, &status, WNOHANG);
114#else
115    pid = wait3(&status, WNOHANG, 0);
116#endif
117    if (pid != app_pid || WIFSTOPPED(status))
118      return;
119    app_running = FALSE;
120    if (WIFEXITED(status))
121#ifdef POSIX
122      app_exit_status =  WEXITSTATUS(status);
123    else
124      app_exit_status = WTERMSIG(status);
125#else
126      app_exit_status = status.w_retcode;
127    else
128      app_exit_status = -status.w_termsig;
129#endif
130}
131
132void wakeup()
133{
134}
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