fusl/src/stdio/pclose.c

#include "stdio_impl.h"
#include <errno.h>
#include <unistd.h>

int pclose(FILE* f) {
  int status, r;
  pid_t pid = f->pipe_pid;
  fclose(f);
  while ((r = __syscall(SYS_wait4, pid, &status, 0, 0)) == -EINTR)
    ;
  if (r < 0)
    return __syscall_ret(r);
  return status;
}