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Annotation of 42BSD/sys/h/systm.h, revision 1.1.1.1

1.1       root        1: /*     systm.h 6.1     83/07/29        */
                      2: 
                      3: /*
                      4:  * Random set of variables
                      5:  * used by more than one
                      6:  * routine.
                      7:  */
                      8: int    hand;                   /* current index into coremap used by daemon */
                      9: extern char version[];         /* system version */
                     10: 
                     11: /*
                     12:  * Nblkdev is the number of entries
                     13:  * (rows) in the block switch. It is
                     14:  * set in binit/bio.c by making
                     15:  * a pass over the switch.
                     16:  * Used in bounds checking on major
                     17:  * device numbers.
                     18:  */
                     19: int    nblkdev;
                     20: 
                     21: /*
                     22:  * Number of character switch entries.
                     23:  * Set by cinit/prim.c
                     24:  */
                     25: int    nchrdev;
                     26: 
                     27: int    nswdev;                 /* number of swap devices */
                     28: int    mpid;                   /* generic for unique process id's */
                     29: char   runin;                  /* scheduling flag */
                     30: char   runout;                 /* scheduling flag */
                     31: int    runrun;                 /* scheduling flag */
                     32: char   kmapwnt;                /* kernel map want flag */
                     33: char   curpri;                 /* more scheduling */
                     34: 
                     35: int    maxmem;                 /* actual max memory per process */
                     36: int    physmem;                /* physical memory on this CPU */
                     37: 
                     38: int    nswap;                  /* size of swap space */
                     39: int    updlock;                /* lock for sync */
                     40: daddr_t        rablock;                /* block to be read ahead */
                     41: int    rasize;                 /* size of block in rablock */
                     42: extern int intstack[];         /* stack for interrupts */
                     43: dev_t  rootdev;                /* device of the root */
                     44: dev_t  dumpdev;                /* device to take dumps on */
                     45: long   dumplo;                 /* offset into dumpdev */
                     46: dev_t  swapdev;                /* swapping device */
                     47: dev_t  argdev;                 /* device for argument lists */
                     48: 
                     49: #ifdef vax
                     50: extern int icode[];            /* user init code */
                     51: extern int szicode;            /* its size */
                     52: #endif
                     53: 
                     54: daddr_t        bmap();
                     55: caddr_t        calloc();
                     56: unsigned max();
                     57: unsigned min();
                     58: int    memall();
                     59: int    uchar(), schar();
                     60: int    vmemall();
                     61: caddr_t        wmemall();
                     62: swblk_t        vtod();
                     63: 
                     64: /*
                     65:  * Structure of the system-entry table
                     66:  */
                     67: extern struct sysent
                     68: {
                     69:        int     sy_narg;                /* total number of arguments */
                     70:        int     (*sy_call)();           /* handler */
                     71: } sysent[];
                     72: 
                     73: int    noproc;                 /* no one is running just now */
                     74: char   *panicstr;
                     75: int    wantin;
                     76: int    boothowto;              /* reboot flags, from console subsystem */
                     77: int    selwait;
                     78: 
                     79: extern char vmmap[];           /* poor name! */
                     80: 
                     81: /* casts to keep lint happy */
                     82: #define        insque(q,p)     _insque((caddr_t)q,(caddr_t)p)
                     83: #define        remque(q)       _remque((caddr_t)q)
                     84: #define        queue(q,p)      _queue((caddr_t)q,(caddr_t)p)
                     85: #define        dequeue(q)      _dequeue((caddr_t)q)

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