Add original unix v6

sys/proc.h

@@ -0,0 +1,42 @@
+/*
+ * One structure allocated per active
+ * process. It contains all data needed
+ * about the process while the
+ * process may be swapped out.
+ * Other per process data (user.h)
+ * is swapped with the process.
+ */
+struct	proc
+{
+	char	p_stat;
+	char	p_flag;
+	char	p_pri;		/* priority, negative is high */
+	char	p_sig;		/* signal number sent to this process */
+	char	p_uid;		/* user id, used to direct tty signals */
+	char	p_time;		/* resident time for scheduling */
+	char	p_cpu;		/* cpu usage for scheduling */
+	char	p_nice;		/* nice for scheduling */
+	int	p_ttyp;		/* controlling tty */
+	int	p_pid;		/* unique process id */
+	int	p_ppid;		/* process id of parent */
+	int	p_addr;		/* address of swappable image */
+	int	p_size;		/* size of swappable image (*64 bytes) */
+	int	p_wchan;	/* event process is awaiting */
+	int	*p_textp;	/* pointer to text structure */
+} proc[NPROC];
+
+/* stat codes */
+#define	SSLEEP	1		/* sleeping on high priority */
+#define	SWAIT	2		/* sleeping on low priority */
+#define	SRUN	3		/* running */
+#define	SIDL	4		/* intermediate state in process creation */
+#define	SZOMB	5		/* intermediate state in process termination */
+#define	SSTOP	6		/* process being traced */
+
+/* flag codes */
+#define	SLOAD	01		/* in core */
+#define	SSYS	02		/* scheduling process */
+#define	SLOCK	04		/* process cannot be swapped */
+#define	SSWAP	010		/* process is being swapped out */
+#define	STRC	020		/* process is being traced */
+#define	SWTED	040		/* another tracing flag */