?? param.h
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/* * 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)
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