79 lines
1.7 KiB
C
79 lines
1.7 KiB
C
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// SPDX-License-Identifier: GPL-2.0-only
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/* Test that empty argvs are swapped out for a single empty string. */
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#include <stdio.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include "../kselftest.h"
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#define FORK(exec) \
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do { \
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pid = fork(); \
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if (pid == 0) { \
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/* Child */ \
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exec; /* Some kind of exec */ \
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perror("# " #exec); \
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return 1; \
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} \
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check_result(pid, #exec); \
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} while (0)
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void check_result(pid_t pid, const char *msg)
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{
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int wstatus;
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if (pid == (pid_t)-1) {
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perror("# fork");
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ksft_test_result_fail("fork failed: %s\n", msg);
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return;
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}
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if (waitpid(pid, &wstatus, 0) < 0) {
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perror("# waitpid");
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ksft_test_result_fail("waitpid failed: %s\n", msg);
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return;
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}
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if (!WIFEXITED(wstatus)) {
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ksft_test_result_fail("child did not exit: %s\n", msg);
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return;
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}
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if (WEXITSTATUS(wstatus) != 0) {
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ksft_test_result_fail("non-zero exit: %s\n", msg);
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return;
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}
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ksft_test_result_pass("%s\n", msg);
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}
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int main(int argc, char *argv[], char *envp[])
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{
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pid_t pid;
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static char * const args[] = { NULL };
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static char * const str[] = { "", NULL };
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/* argc counting checks */
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if (argc < 1) {
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fprintf(stderr, "# FAIL: saw argc == 0 (old kernel?)\n");
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return 1;
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}
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if (argc != 1) {
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fprintf(stderr, "# FAIL: unknown argc (%d)\n", argc);
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return 1;
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}
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if (argv[0][0] == '\0') {
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/* Good, we found a NULL terminated string at argv[0]! */
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return 0;
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}
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/* Test runner. */
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ksft_print_header();
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ksft_set_plan(5);
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FORK(execve(argv[0], str, NULL));
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FORK(execve(argv[0], NULL, NULL));
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FORK(execve(argv[0], NULL, envp));
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FORK(execve(argv[0], args, NULL));
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FORK(execve(argv[0], args, envp));
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ksft_exit(ksft_cnt.ksft_pass == ksft_plan);
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}
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