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Annotation of xinu/sys/read.c, revision 1.1.1.1

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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