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17 lines
500 B
C
17 lines
500 B
C
/*
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* Seek.c -- Whitesmith's equivalent of V6 seek
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*/
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seek(fildes,offset,ptrname)
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int fildes; /* UNIX / WS file descriptor */
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int offset; /* File offset, bytes */
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int ptrname; /* Sense variable */
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{
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offset &= 0xffff; /* Clear sign extension problems*/
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if(ptrname > 2) /* Not byte sense seek */
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{ /* */
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offset = offset << 9; /* Multiply by 512 */
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ptrname -= 3; /* reset to range 0 .. 2 */
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} /********************************/
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return(lseek(fildes,offset,ptrname));
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}
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