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bf180e98f4
intelligently than the shell implementation. C code by Jaroslav Stava. I have done a rudimentary review and checked that tests still pass.
37 lines
701 B
C
37 lines
701 B
C
#include <unistd.h>
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#include <stdio.h>
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#include <stdarg.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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int main(int args, char **argv) {
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pid_t pid;
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int status;
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int FAILURE = 6;
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if (args < 2) {
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fprintf(stderr, "Need args\n");
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return FAILURE;
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}
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pid = fork();
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if (pid == -1) {
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fprintf(stderr, "Could not fork\n");
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return FAILURE;
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} else if (pid == 0) { /* child */
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execvp(argv[1], &argv[1]);
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/* should not be accessible */
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return FAILURE;
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} else { /* parent */
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waitpid(pid, &status, 0);
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if (!WIFEXITED(status)) {
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/* did not exit correctly */
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return FAILURE;
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}
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/* return the opposite */
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return !WEXITSTATUS(status);
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}
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/* not accessible */
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return FAILURE;
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}
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