rflseek.c File Reference

#include <xinu.h>

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Functions
devcall	rflseek (struct dentry *devptr, uint32 pos)

Function Documentation

rflseek()

devcall rflseek	(	struct dentry *	devptr,
		uint32	pos
	)

Definition at line 9 of file rflseek.c.

References dentry::dvminor, OK, Rf_data, RF_FREE, rfdata::rf_mutex, rfltab, rflcblk::rfpos, rflcblk::rfstate, signal(), SYSERR, and wait().

{
    struct  rflcblk *rfptr;     /* Pointer to control block */

    /* Wait for exclusive access */

    wait(Rf_data.rf_mutex);

    /* Verify remote file device is open */

    rfptr = &rfltab[devptr->dvminor];
    if (rfptr->rfstate == RF_FREE) {
        signal(Rf_data.rf_mutex);
        return SYSERR;
    }

    /* Set the new position */

    rfptr->rfpos = pos;
    signal(Rf_data.rf_mutex);
    return OK;
}

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