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jazclib1.arc
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JZGETFAT.C
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1986-04-10
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/*
┌────────────────────────────────────────────────────────────────────────────┐
│jzgetfat.c │
│Return a dynamically allocated fat table for the specifed disk. This can │
│then be used for cluster searches ala chkdsk. │
│ │
│Usage: │
│ char *wfat; │
│ │
│ jzgetfat(&wfat , 0); │
│ │
│ (C) JazSoft Software by Jack A. Zucker (301) 794-5950 │
└────────────────────────────────────────────────────────────────────────────┘
*/
jzgetfat( ffat , fdisk )
char **ffat;
int fdisk; /* 0 = 'A' , 1 = 'B' etc */
{
int woffset,w; /* work integers */
char wbuf[512]; /* disk buffer */
int werr;
TDISKBLK *wblock = (TDISKBLK *) wbuf;
char *malloc();
diskinfo(fdisk,wbuf); /* get disk parameters */
/* bytes per sector * sectors per fat table */
if ( ! (*ffat = malloc(wblock->bytes * wblock->sectfat))) {
printf("\nInsufficient Memory. Aborting...");
exit(-1);
}
woffset = (int) *ffat;
for (w = 1 ; w <= wblock->sectfat ; w ++) {
dosreads(fdisk , w , 1 ,woffset); /* read fat sector */
woffset += wblock->bytes; /* increment by sector size */
}
}