51 lines
1,019 B
C
51 lines
1,019 B
C
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#include <stdlib.h>
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#include <string.h>
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#include <limits.h>
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#include <fcntl.h>
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#include <sys/wait.h>
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#include "common.h"
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/*
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* Test for dynamic executables with no read permissions. This test relies on
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* being linked dynamically.
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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 *executable, cp_cmd[PATH_MAX + 9];
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int status;
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if (strcmp(argv[0], "DO CHECK") == 0)
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exit(EXIT_SUCCESS);
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start(86);
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/* Make a copy of this binary which is executable-only. */
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executable = argv[0];
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snprintf(cp_cmd, sizeof(cp_cmd), "cp ../%s .", executable);
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status = system(cp_cmd);
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if (status < 0 || !WIFEXITED(status) ||
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WEXITSTATUS(status) != EXIT_SUCCESS) e(0);
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if (chmod(executable, S_IXUSR) != 0) e(0);
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/* Invoke the changed binary in a child process. */
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switch (fork()) {
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case -1:
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e(0);
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case 0:
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execl(executable, "DO CHECK", NULL);
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exit(EXIT_FAILURE);
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default:
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if (wait(&status) <= 0) e(0);
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if (!WIFEXITED(status) || WEXITSTATUS(status) != EXIT_SUCCESS)
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e(0);
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}
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quit();
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/* NOTREACHED */
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}
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