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Annotation of xinu/sys/read.c, revision 1.1

1.1     ! root        1: /* read.c - read */
        !             2: 
        !             3: #include <conf.h>
        !             4: #include <kernel.h>
        !             5: #include <io.h>
        !             6: 
        !             7: /*------------------------------------------------------------------------
        !             8:  *  read  -  read one or more bytes from a device
        !             9:  *------------------------------------------------------------------------
        !            10:  */
        !            11: SYSCALL        read(descrp, buff, count)
        !            12: int descrp, count;
        !            13: char *buff;
        !            14: {
        !            15:        struct  devsw   *devptr;
        !            16: 
        !            17:        if (isbaddev(descrp) )
        !            18:                return(SYSERR);
        !            19:        devptr = &devtab[descrp];
        !            20:        return( (*devptr->dvread)(devptr,buff,count) );
        !            21: }

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