updated to minix 1.5

lib/minix/include/sys/wait.h

@@ -0,0 +1,40 @@
+/* The <sys/wait.h> header contains macros related to wait(). The value
+ * returned by wait() and waitpid() depends on whether the process 
+ * terminated by an exit() call, was killed by a signal, or was stopped
+ * due to job control, as follows:
+ *
+ *				 High byte   Low byte
+ *				+---------------------+
+ *	exit(status)		|  status  |    0     |
+ *				+---------------------+
+ *      killed by signal	|    0     |  signal  |
+ *				+---------------------+
+ *	stopped (job control)	|  signal  |   0177   |
+ *				+---------------------+
+ */
+
+#ifndef _WAIT_H
+#define _WAIT_H
+
+#define _LOW(v)		( (v) & 0377)
+#define _HIGH(v)	( ((v) >> 8) & 0377)
+
+#define WNOHANG         1	/* do not wait for child to exit */
+#define WUNTRACED       2	/* for job control; not implemented */
+
+#define WIFEXITED(s)	(_LOW(s) == 0)			    /* normal exit */
+#define WEXITSTATUS(s)	(_HIGH(s))			    /* exit status */
+#define WTERMSIG(s)	(_LOW(s) & 0177)		    /* sig value */
+#define WIFSIGNALED(s)	(((unsigned int)(s)-1 & 0xFFFF) < 0xFF) /* signaled */
+#define WIFSTOPPED(s)	(_LOW(s) == 0177)		    /* stopped */
+#define WSTOPSIG(s)	(_HIGH(s) & 0377)		    /* stop signal */
+
+/* Function Prototypes. */
+#ifndef _ANSI_H
+#include <ansi.h>
+#endif
+
+_PROTOTYPE( pid_t wait, (int *_stat_loc)				);
+_PROTOTYPE( pid_t waitpid, (pid_t _pid, int *_stat_loc, int _options)	);
+
+#endif /* _WAIT_H */