44 lines
873 B
C
44 lines
873 B
C
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#include <sys/wait.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <stdio.h>
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int
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main(int argc, char *argv[])
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{
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pid_t cpid, w;
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int status;
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cpid = fork();
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if(cpid == -1){
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perror("fork");
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exit(EXIT_FAILURE);
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}
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if (cpid == 0) { /* Code executed by child */
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printf("Child PID is %ld\n", (long) getpid());
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_exit(10);
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}
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/* Code executed by parent */
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do {
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w = waitpid(cpid, &status, WUNTRACED);
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if (w == -1) {
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perror("waitpid");
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exit(EXIT_FAILURE);
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}
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if (WIFEXITED(status)) {
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printf("exited, status=%d\n", WEXITSTATUS(status));
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} else if (WIFSIGNALED(status)) {
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printf("killed by signal %d\n", WTERMSIG(status));
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exit(EXIT_FAILURE);
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} else if (WIFSTOPPED(status)) {
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printf("stopped by signal %d\n", WSTOPSIG(status));
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exit(EXIT_FAILURE);
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}
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} while (!WIFEXITED(status) && !WIFSIGNALED(status));
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exit(EXIT_SUCCESS);
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}
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