79 lines
1.3 KiB
C
79 lines
1.3 KiB
C
#include <signal.h>
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char console[] = "/dev/console";
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run(uid, gid, argv)
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char **argv;
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{
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for (;;)
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switch (fork()) {
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default:
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return;
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case 0:
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if (setgid(gid) < 0) perror("can't set gid");
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if (setuid(uid) < 0) perror("can't set uid");
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/*
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execvp(*argv, argv);
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*/
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execv(*argv, argv);
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perror("master: exec'ing");
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prints("can't execute %s\n", *argv);
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/*
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kill(getppid(), SIGTERM);
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*/
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/* If the exec failed, don't try it again immediately.
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* Give the kernel a chance to do something else.
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*/
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sleep (5);
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_exit(1);
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case -1:
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sleep(10);
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}
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}
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main(argc, argv)
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char **argv;
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{
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register n, uid, gid;
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/* Minix can't do this
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setpgrp(getpid(), getpid());
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*/
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if (argc < 4) {
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prints("Usage: master # uid gid command args ...\n");
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return(1);
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}
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n = atoi(argv[1]);
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if (n < 1 || n > 20) {
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prints("Bad count.\n");
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return(1);
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}
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signal(SIGHUP, SIG_IGN);
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signal(SIGINT, SIG_IGN);
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signal(SIGQUIT, SIG_IGN);
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/* Put the program into the background. */
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switch (fork()) {
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case 0:
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break;
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case -1:
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perror(argv[0]);
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return 1;
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default:
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return 0;
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}
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uid = atoi(argv[2]);
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gid = atoi(argv[3]);
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/* Start n copies of the program. */
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do
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run(uid, gid, &argv[4]);
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while (--n);
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/* Replace each one that dies. */
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while (wait((int *) 0) > 0)
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run(uid, gid, &argv[4]);
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return(0);
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}
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