27 lines
736 B
C
27 lines
736 B
C
#include <sys/syscall.h>
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#include <sys/wait.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <spawn.h>
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int main(int argc, const char* argv[]) {
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int ret, child_pid, status;
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printf("Run a parent process has pid = %d and ppid = %d\n", getpid(), getppid());
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ret = posix_spawn(&child_pid, "getpid", NULL, NULL, NULL, NULL);
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if (ret < 0) {
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printf("ERROR: failed to spawn a child process\n");
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return -1;
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}
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printf("Spawn a new proces successfully (pid = %d)\n", child_pid);
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ret = wait4(-1, &status, 0, NULL);
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if (ret < 0) {
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printf("ERROR: failed to wait4 the child process\n");
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return -1;
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}
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printf("Child process exited with status = %d\n", status);
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return 0;
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}
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