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UZI.ARC
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EXTERN.H
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C/C++ Source or Header
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1988-11-29
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1KB
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47 lines
/**************************************************
UZI (Unix Z80 Implementation) Kernel: extern.h
***************************************************/
/* These are the global data structures */
#ifdef MAIN
#define extern
#endif
extern struct u_data udata; /* MUST BE FIRST */
extern struct p_tab ptab[PTABSIZE];
extern inoptr root; /* Address of root dir in inode table */
extern int16 ROOTDEV; /* Device number of root filesystem. */
extern struct cinode i_tab[ITABSIZE]; /* In-core inode table */
extern struct oft of_tab[OFTSIZE]; /* Open File Table */
extern struct filesys fs_tab[NDEVS]; /* Table entry for each
device with a filesystem. */
extern struct blkbuf bufpool[NBUFS];
extern ptptr initproc; /* The process table address of the first process. */
extern int16 inint; /* flag is set whenever interrupts are being serviced */
extern int16 sec; /* Tick counter for counting off one second */
extern int16 runticks; /* Number of ticks current process has been
swapped in */
extern time_t tod; /* Time of day */
extern time_t ticks; /* Cumulative tick counter, in minutes and ticks */
extern char *swapbase; /* Used by device driver for swapping */
extern unsigned swapcnt;
extern blkno_t swapblk;
extern char vector[3]; /* Place for interrupt vector */
#ifdef MAIN
#undef extern
#endif