Replace macros defined by linux/wait.h. Just include that kernel header.

Author: nickdesaulniers

libc/include/llvm-libc-macros/linux/sys-wait-macros.h

@@ -9,12 +9,7 @@
 #ifndef LLVM_LIBC_MACROS_LINUX_SYS_WAIT_MACROS_H
 #define LLVM_LIBC_MACROS_LINUX_SYS_WAIT_MACROS_H
 
-// Wait flags
-#define WNOHANG 1    // Do not block
-#define WUNTRACED 2  // Report is a child has stopped even if untraced
-#define WEXITED 4    // Report dead child
-#define WCONTINUED 8 // Report if a stopped child has been resumed by SIGCONT
-#define WSTOPPED WUNTRACED
+#include <linux/wait.h>
 
 // Wait status info macros
 #define __WEXITSTATUS(status) (((status)&0xff00) >> 8)
@@ -35,10 +30,4 @@
 #define W_EXITCODE(ret, sig) __W_EXITCODE(ret, sig)
 #define W_STOPCODE(sig) __W_STOPCODE(sig)
 
-// First argument to waitid:
-#define P_ALL 0
-#define P_PID 1
-#define P_PGID 2
-#define P_PIDFD 3
-
 #endif // LLVM_LIBC_MACROS_LINUX_SYS_WAIT_MACROS_H