#include <stdio.h>
#include <string.h>
#include <assert.h>
+#include <fcntl.h>
+#include <unistd.h>
#include <sys/poll.h>
#include <sys/types.h>
#include <sys/time.h>
extern void *safe_malloc(size_t size, const char *message);
extern void *safe_malloc_ary(size_t size, size_t count, const char *message);
+void setcloexec(int fd); /* cannot fail */
+
extern int sys_cmd(const char *file, const char *argc, ...);
extern uint64_t now_global;