ADD file via upload

include/sys/wait.h

@@ -0,0 +1,23 @@
+#ifndef _SYS_WAIT_H
+#define _SYS_WAIT_H
+
+#include <sys/types.h>
+
+#define _LOW(v)		( (v) & 0377)
+#define _HIGH(v)	( ((v) >> 8) & 0377)
+
+/* options for waitpid, WUNTRACED not supported */
+#define WNOHANG		1
+#define WUNTRACED	2
+
+#define WIFEXITED(s)	(!((s)&0xFF)
+#define WIFSTOPPED(s)	(((s)&0xFF)==0x7F)
+#define WEXITSTATUS(s)	(((s)>>8)&0xFF)
+#define WTERMSIG(s)	((s)&0x7F)
+#define WSTOPSIG(s)	(((s)>>8)&0xFF)
+#define WIFSIGNALED(s)	(((unsigned int)(s)-1 & 0xFFFF) < 0xFF)
+
+pid_t wait(int *stat_loc);
+pid_t waitpid(pid_t pid, int *stat_loc, int options);
+
+#endif