SysIII/usr/include/sys/param.h
/*
* fundamental variables
* don't change too often
*/
#define NOFILE 20 /* max open files per process */
#define MAXPID 30000 /* max process id */
#define MAXUID 60000 /* max user id */
#define MAXLINK 1000 /* max links */
#ifdef vax
#define MAXMEM (16*128) /* max core in 512-byte clicks */
/*
* NOTE: For the moment, MAXUMEM must be less than 60*128
*/
#define MAXUMEM (40*128) /* max no. clicks per process */
#define SWAPSIZE 64 /* granularity of partial swaps (in clicks) */
#define SSIZE 4 /* initial stack size (*512 bytes) */
#define SINCR 2 /* increment of stack (*512 bytes) */
#define UPAGES 4
#define USIZE (UPAGES + u.u_pcb.pcb_szpt) /* size of user block (*512) */
#define USRSTACK 0x80000000 /* Start of user stack */
#else
#define MAXMEM (64*32) /* max core per process */
#define SSIZE 12 /* initial stack size (*64 bytes) */
#define SINCR 12 /* increment of stack (*64 bytes) */
#define USIZE 16 /* size of user block (*64 bytes) */
#define USRSTACK 0 /* Start of user stack */
#define NSWB 3 /* size of swap pool */
#endif
#define CANBSIZ 256 /* max size of typewriter line */
#define HZ 60 /* Ticks/second of the clock */
#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
#define PIDLE 127
/*
* signals
* dont change
*/
#define NSIG 20
/*
* No more than 32 signals (1-32) because they are
* stored in bits in a long.
*/
#define SIGHUP 1 /* hangup */
#define SIGINT 2 /* interrupt (rubout) */
#define SIGQUIT 3 /* quit (FS) */
#define SIGILL 4 /* illegal instruction */
#define SIGTRAP 5 /* trace or breakpoint */
#define SIGIOT 6 /* iot */
#define SIGEMT 7 /* emt */
#define SIGFPE 8 /* floating exception */
#define SIGKILL 9 /* kill, uncatchable termination */
#define SIGBUS 10 /* bus error */
#define SIGSEGV 11 /* segmentation violation */
#define SIGSYS 12 /* bad system call */
#define SIGPIPE 13 /* end of pipe */
#define SIGALRM 14 /* alarm clock */
#define SIGTERM 15 /* Catchable termination */
#define SIGUSR1 16 /* user defined signal 1 */
#define SIGUSR2 17 /* user defined signal 2 */
#define SIGCLD 18 /* child death */
#define SIGPWR 19 /* power-fail restart */
/*
* 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) */
#define NINDIR (BSIZE/sizeof(daddr_t))
#define BMASK 0777 /* BSIZE-1 */
#define INOPB 8 /* inodes per block */
#define BSHIFT 9 /* LOG2(BSIZE) */
#define NMASK 0177 /* NINDIR-1 */
#define NSHIFT 7 /* LOG2(NINDIR) */
#define NICFREE 50 /* number of superblock free blocks */
#define NULL 0
#define CMASK 0 /* default mask for file creation */
#define CDLIMIT (1L<<11) /* default max write address */
#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 CLKTICK 16667 /* microseconds in a clock tick */
/*
* Some macros for units conversion
*/
/* Core clicks (512/64 bytes) to segments and vice versa */
#ifdef vax
#define ctos(x) (x)
#define stoc(x) (x)
#else
#define ctos(x) ((x+127)/128)
#define stoc(x) ((x)<<7)
#endif
/* Core clicks (512/64 bytes) to disk blocks */
#ifdef vax
#define ctod(x) (x)
#else
#define ctod(x) ((x+7)>>3)
#endif
/* 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 */
#ifdef vax
#define ctob(x) ((x)<<9)
#else
#define ctob(x) ((x)<<6)
#endif
/* bytes to clicks */
#ifdef vax
#define btoc(x) (((unsigned)x+511)>>9)
#define btoct(x) ((unsigned)(x)>>9)
#else
#define btoc(x) (((unsigned)x+63)>>6)
#define btoct(x) ((unsigned)(x)>>6)
#endif
/* 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 short ushort;
typedef ushort ino_t;
#ifdef vax
typedef short cnt_t;
#else
typedef char cnt_t;
#endif
typedef long time_t;
#ifdef vax
typedef int label_t[10];
#else
typedef int label_t[6];
#endif
typedef short dev_t;
typedef long off_t;
typedef long paddr_t;
#define UMODE PS_CUR /* usermode bits */
#define USERMODE(ps) ((ps & UMODE) == UMODE)
#define BASEPRI(ps) ((ps & PS_IPL) != 0)
#ifdef vax
#define lobyte(X) (((unsigned char *)&X)[0])
#define hibyte(X) (((unsigned char *)&X)[1])
#define loword(X) (((ushort *)&X)[0])
#define hiword(X) (((ushort *)&X)[1])
#else
#define lobyte(X) (((char *)&X)[0])
#define hibyte(X) (((char *)&X)[1])
#define loword(X) (((ushort *)&X)[1])
#define hiword(X) (((ushort *)&X)[0])
#endif