/* * tunable variables */#define	NBUF	15		/* size of buffer cache */#define	NINODE	20		/* number of in core inodes */#define	NFILE	20		/* number of in core file structures */#define	NMOUNT	2		/* number of mountable file systems */#define	MAXMEM	(64*32)		/* max core per process - first # is Kw */#define	MAXUPRC	15		/* max processes per user */#define	SSIZE	20		/* initial stack size (*64 bytes) */#define	SINCR	20		/* increment of stack (*64 bytes) */#define	NOFILE	20		/* max open files per process */#define	CANBSIZ	256		/* max size of typewriter line */#define	CMAPSIZ	20		/* size of core allocation area */#define	SMAPSIZ	20		/* size of swap allocation area */#define	NCALL	10		/* max simultaneous time callouts */#define	NPROC	20		/* max number of processes */#define	NTEXT	10		/* max number of pure texts */#define	NCLIST	40		/* max total clist size */#define	HZ	60		/* Ticks/second of the clock */#define	TIMEZONE (5*60)		/* Minutes westward from Greenwich */#define	DSTFLAG	1		/* Daylight Saving Time applies in this locality */#define	MSGBUFS	128		/* Characters saved from error messages */#define	NCARGS	5120		/* # characters in exec arglist *//* * priorities * probably should not be * altered too much */#define	PSWP	0#define	PINOD	10#define	PRIBIO	20#define	PZERO	25#define	NZERO	20#define	PPIPE	26#define	PWAIT	30#define	PSLEP	40#define	PUSER	50/* * signals * dont change */#define	NSIG	17/* * No more than 16 signals (1-16) because they are * stored in bits in a word. */#define	SIGHUP	1	/* hangup */#define	SIGINT	2	/* interrupt (rubout) */#define	SIGQUIT	3	/* quit (FS) */#define	SIGINS	4	/* illegal instruction */#define	SIGTRC	5	/* trace or breakpoint */#define	SIGIOT	6	/* iot */#define	SIGEMT	7	/* emt */#define	SIGFPT	8	/* floating exception */#define	SIGKIL	9	/* kill, uncatchable termination */#define	SIGBUS	10	/* bus error */#define	SIGSEG	11	/* segmentation violation */#define	SIGSYS	12	/* bad system call */#define	SIGPIPE	13	/* end of pipe */#define	SIGCLK	14	/* alarm clock */#define	SIGTRM	15	/* Catchable termination *//* * fundamental constants of the implementation-- * cannot be changed easily */#define	NBPW	sizeof(int)	/* number of bytes in an integer */#define	BSIZE	512		/* size of secondary block (bytes) *//* BSLOP can be 0 unless you have a TIU/Spider */#define	BSLOP	2		/* In case some device needs bigger buffers */#define	NINDIR	(BSIZE/sizeof(daddr_t))#define	BMASK	0777		/* BSIZE-1 */#define	BSHIFT	9		/* LOG2(BSIZE) */#define	NMASK	0177		/* NINDIR-1 */#define	NSHIFT	7		/* LOG2(NINDIR) */#define	USIZE	16		/* size of user block (*64) */#define	UBASE	0140000		/* abs. addr of user block */#define	NULL	0#define	CMASK	0		/* default mask for file creation */#define	NODEV	(dev_t)(-1)#define	ROOTINO	((ino_t)2)	/* i number of all roots */#define	SUPERB	((daddr_t)1)	/* block number of the super block */#define	DIRSIZ	14		/* max characters per directory */#define	NICINOD	100		/* number of superblock inodes */#define	NICFREE	50		/* number of superblock free blocks */#define	INFSIZE	138		/* size of per-proc info for users */#define	CBSIZE	6		/* number of chars in a clist block */#define	CROUND	07		/* clist rounding: sizeof(int *) + CBSIZE - 1*//* * Some macros for units conversion *//* Core clicks (64 bytes) to segments and vice versa */#define	ctos(x)	((x+127)/128)#define stoc(x) ((x)*128)/* Core clicks (64 bytes) to disk blocks */#define	ctod(x)	((x+7)>>3)/* inumber to disk address */#define	itod(x)	(daddr_t)((((unsigned)x+15)>>3))/* inumber to disk offset */#define	itoo(x)	(int)((x+15)&07)/* clicks to bytes */#define	ctob(x)	(x<<6)/* bytes to clicks */#define	btoc(x)	((((unsigned)x+63)>>6))/* major part of a device */#define	major(x)	(int)(((unsigned)x>>8))/* minor part of a device */#define	minor(x)	(int)(x&0377)/* make a device number */#define	makedev(x,y)	(dev_t)((x)<<8 | (y))typedef	struct { int r[1]; } *	physadr;typedef	long		daddr_t;typedef char *		caddr_t;typedef	unsigned int	ino_t;typedef	long		time_t;typedef	int		label_t[6];	/* regs 2-7 */typedef	int		dev_t;typedef	long		off_t;/* * Machine-dependent bits and macros */#define	UMODE	0170000		/* usermode bits */#define	USERMODE(ps)	((ps & UMODE)==UMODE)#define	INTPRI	0340		/* Priority bits */#define	BASEPRI(ps)	((ps & INTPRI) != 0)