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Annotation of 43BSDReno/sys/hpstand/conf.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1982, 1986, 1990 The Regents of the University of California.
                      3:  * All rights reserved.
                      4:  *
                      5:  * Redistribution is only permitted until one year after the first shipment
                      6:  * of 4.4BSD by the Regents.  Otherwise, redistribution and use in source and
                      7:  * binary forms are permitted provided that: (1) source distributions retain
                      8:  * this entire copyright notice and comment, and (2) distributions including
                      9:  * binaries display the following acknowledgement:  This product includes
                     10:  * software developed by the University of California, Berkeley and its
                     11:  * contributors'' in the documentation or other materials provided with the
                     12:  * distribution and in all advertising materials mentioning features or use
                     13:  * of this software.  Neither the name of the University nor the names of
                     14:  * its contributors may be used to endorse or promote products derived from
                     15:  * this software without specific prior written permission.
                     16:  * THIS SOFTWARE IS PROVIDED AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
                     17:  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
                     18:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     19:  *
                     20:  *     @(#)conf.c      7.2 (Berkeley) 7/1/90
                     21:  */
                     22: 
                     23: #include "saio.h"
                     24: 
                     25: devread(io)
                     26:        register struct iob *io;
                     27: {
                     28:        int cc;
                     29: 
                     30:        /* check for interrupt */
                     31:        (void) peekchar();
                     32: 
                     33:        io->i_flgs |= F_RDDATA;
                     34:        io->i_error = 0;
                     35:        cc = (*devsw[io->i_dev].dv_strategy)(io, READ);
                     36:        io->i_flgs &= ~F_TYPEMASK;
                     37:        return (cc);
                     38: }
                     39: 
                     40: devwrite(io)
                     41:        register struct iob *io;
                     42: {
                     43:        int cc;
                     44: 
                     45:        io->i_flgs |= F_WRDATA;
                     46:        io->i_error = 0;
                     47:        cc = (*devsw[io->i_dev].dv_strategy)(io, WRITE);
                     48:        io->i_flgs &= ~F_TYPEMASK;
                     49:        return (cc);
                     50: }
                     51: 
                     52: devopen(io)
                     53:        register struct iob *io;
                     54: {
                     55: 
                     56:        (*devsw[io->i_dev].dv_open)(io);
                     57: }
                     58: 
                     59: devclose(io)
                     60:        register struct iob *io;
                     61: {
                     62: 
                     63:        (*devsw[io->i_dev].dv_close)(io);
                     64: }
                     65: 
                     66: devioctl(io, cmd, arg)
                     67:        register struct iob *io;
                     68:        int cmd;
                     69:        caddr_t arg;
                     70: {
                     71: 
                     72:        return ((*devsw[io->i_dev].dv_ioctl)(io, cmd, arg));
                     73: }
                     74: 
                     75: /*ARGSUSED*/
                     76: nullsys(io)
                     77:        struct iob *io;
                     78: {
                     79: 
                     80:        ;
                     81: }
                     82: 
                     83: /*ARGSUSED*/
                     84: nullioctl(io, cmd, arg)
                     85:        struct iob *io;
                     86:        int cmd;
                     87:        caddr_t arg;
                     88: {
                     89: 
                     90:        return (ECMD);
                     91: }
                     92: 
                     93: int    nullsys(), nullioctl();
                     94: int    rdstrategy(), rdopen(), rdioctl();
                     95: int    sdstrategy(), sdopen(), sdioctl();
                     96: #ifndef BOOT
                     97: int    ctstrategy(), ctopen(), ctclose();
                     98: #endif
                     99: 
                    100: struct devsw devsw[] = {
                    101:        { "rd", rdstrategy,     rdopen,         nullsys,        nullioctl },
                    102:        { "sd", sdstrategy,     sdopen,         nullsys,        nullioctl },
                    103: #ifndef BOOT
                    104:        { "ct", ctstrategy,     ctopen,         ctclose,        nullioctl },
                    105: #endif
                    106:        { 0, 0, 0, 0, 0 },
                    107: };

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