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Annotation of 43BSD/sys/stand/confxx.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1982, 1986 Regents of the University of California.
        !             3:  * All rights reserved.  The Berkeley software License Agreement
        !             4:  * specifies the terms and conditions for redistribution.
        !             5:  *
        !             6:  *     @(#)confxx.c    7.1 (Berkeley) 6/5/86
        !             7:  */
        !             8: 
        !             9: #include "../machine/pte.h"
        !            10: 
        !            11: #include "../h/param.h"
        !            12: #include "../h/inode.h"
        !            13: #include "../h/fs.h"
        !            14: #include "saio.h"
        !            15: 
        !            16: devread(io)
        !            17:        register struct iob *io;
        !            18: {
        !            19:        int cc;
        !            20: 
        !            21:        io->i_flgs |= F_RDDATA;
        !            22:        io->i_error = 0;
        !            23:        cc = (*devsw[io->i_ino.i_dev].dv_strategy)(io, READ);
        !            24:        io->i_flgs &= ~F_TYPEMASK;
        !            25:        return (cc);
        !            26: }
        !            27: 
        !            28: devwrite(io)
        !            29:        register struct iob *io;
        !            30: {
        !            31:        int cc;
        !            32: 
        !            33:        io->i_flgs |= F_WRDATA;
        !            34:        io->i_error = 0;
        !            35:        cc = (*devsw[io->i_ino.i_dev].dv_strategy)(io, WRITE);
        !            36:        io->i_flgs &= ~F_TYPEMASK;
        !            37:        return (cc);
        !            38: }
        !            39: 
        !            40: devopen(io)
        !            41:        register struct iob *io;
        !            42: {
        !            43: 
        !            44:        (*devsw[io->i_ino.i_dev].dv_open)(io);
        !            45: }
        !            46: 
        !            47: devclose(io)
        !            48:        register struct iob *io;
        !            49: {
        !            50: 
        !            51:        (*devsw[io->i_ino.i_dev].dv_close)(io);
        !            52: }
        !            53: 
        !            54: devioctl(io, cmd, arg)
        !            55:        register struct iob *io;
        !            56:        int cmd;
        !            57:        caddr_t arg;
        !            58: {
        !            59: 
        !            60:        return ((*devsw[io->i_ino.i_dev].dv_ioctl)(io, cmd, arg));
        !            61: }
        !            62: 
        !            63: /*ARGSUSED*/
        !            64: nullsys(io)
        !            65:        struct iob *io;
        !            66: {
        !            67: 
        !            68:        ;
        !            69: }
        !            70: 
        !            71: /*ARGSUSED*/
        !            72: nullioctl(io, cmd, arg)
        !            73:        struct iob *io;
        !            74:        int cmd;
        !            75:        caddr_t arg;
        !            76: {
        !            77: 
        !            78:        return (ECMD);
        !            79: }
        !            80: 
        !            81: int    nullsys(), nullioctl();
        !            82: int    xxstrategy(), xxopen(), xxioctl();
        !            83: 
        !            84: struct devsw devsw[] = {
        !            85:        { "XX", xxstrategy,     xxopen,         nullsys,        xxioctl },
        !            86:        { 0, 0, 0, 0, 0 }
        !            87: };

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