88 lines
1.7 KiB
C
88 lines
1.7 KiB
C
/*
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* CS 361: Process management lab
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*
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* Name:
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*/
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#include <assert.h>
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#include <getopt.h>
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#include <inttypes.h>
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#include <semaphore.h>
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#include <signal.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <unistd.h>
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#include "child.h"
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#include "signals.h"
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#define SIGNAL_MAX 20
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int cmdline (int, char **, int *, char **);
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void
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usage (void)
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{
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printf ("Usage: procs [option]\n");
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printf (" Options are:\n");
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printf (" -e N Create a child that exits with status N\n");
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printf (" -s N Override signal number N and run signal handler\n");
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printf ("\n Default is to create a child process with normal exit\n");
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}
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int
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main (int argc, char **argv)
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{
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char *signal_override = NULL;
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int rc = 42;
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if (cmdline (argc, argv, &rc, &signal_override) < 0)
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{
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usage ();
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return EXIT_FAILURE;
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}
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// Set up a timeout to kill the process after 5 seconds
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struct itimerval timeout;
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memset (&timeout, 0, sizeof (timeout));
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timeout.it_value.tv_sec = 5;
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timeout.it_value.tv_usec = 0;
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setitimer (ITIMER_REAL, &timeout, NULL);
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if (signal_override == NULL)
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run_child (rc);
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else
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override (signal_override);
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return EXIT_SUCCESS;
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}
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/* DO NOT MODIFY THIS FUNCTION. Parses the command line arguments to get
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the portion of the lab to run. */
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int
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cmdline (int argc, char **argv, int *rc, char **sig)
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{
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int option;
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while ((option = getopt (argc, argv, "e:s:")) != -1)
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{
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switch (option)
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{
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case 'e':
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*rc = (int)strtol (optarg, NULL, 10);
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break;
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case 's':
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*sig = optarg;
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break;
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default:
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return -1;
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}
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}
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return 0;
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}
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