lflwrite.c

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/* lflwrite.c - lflwrite */

#include <xinu.h>

/*------------------------------------------------------------------------
 * lflwrite  --  Write data to a previously opened local disk file
 *------------------------------------------------------------------------
 */
devcall lflwrite (
      struct dentry *devptr,    /* Entry in device switch table */
      char  *buff,          /* Buffer holding data to write */
      int32 count           /* Number of bytes to write */
    )
{
    int32       i;      /* Number of bytes written  */

    if (count < 0) {
        return SYSERR;
    }

    /* Iteratate and write one byte at a time */

    for (i=0; i<count; i++) {
        if (lflputc(devptr, *buff++) == SYSERR) {
            return SYSERR;
        }
    }
    return count;
}