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devopen.c revision 1.5 
      1 /*	$NetBSD: devopen.c,v 1.5 2009/03/14 15:36:07 dsl Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1999 Shin Takemura.
      5  * All rights reserved.
      6  *
      7  * This software is part of the PocketBSD.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  * 3. All advertising materials mentioning features or use of this software
     18  *    must display the following acknowledgement:
     19  *	This product includes software developed by the PocketBSD project
     20  *	and its contributors.
     21  * 4. Neither the name of the project nor the names of its contributors
     22  *    may be used to endorse or promote products derived from this software
     23  *    without specific prior written permission.
     24  *
     25  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     27  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     28  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     29  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     30  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     31  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     35  * SUCH DAMAGE.
     36  *
     37  */
     38 #define STANDALONE_WINDOWS_SIDE
     39 #include <stand.h>
     40 #include <winblk.h>
     41 #include <winfs.h>
     42 #include <lib/libsa/ufs.h>
     43 
     44 extern int parsebootfile(const char *, char**, char**, unsigned int*,
     45                               unsigned int*, const char**);
     46 
     47 struct devsw devsw[] = {
     48 	{"winblk", winblkstrategy, winblkopen, winblkclose, winblkioctl },
     49 };
     50 int ndevs = sizeof(devsw) / sizeof(struct devsw);
     51 
     52 static struct fs_ops winop = {
     53         win_open, win_close, win_read, win_write, win_seek, win_stat
     54 };
     55 
     56 static struct fs_ops ufsop = {
     57         ufs_open, ufs_close, ufs_read, ufs_write, ufs_seek, ufs_stat
     58 };
     59 
     60 struct fs_ops   file_system[] = {
     61 	{ 0 },
     62 };
     63 int nfsys = 1;
     64 
     65 int
     66 parsebootfile(fnamexx, fsmode, devname, unit, partition, file)
     67         const char     *fnamexx;
     68         char          **fsmode; /* out */
     69         char          **devname; /* out */
     70         unsigned int   *unit, *partition; /* out */
     71         const char    **file; /* out */
     72 {
     73 	TCHAR *fname = (TCHAR*)fnamexx;
     74 
     75 	if (fname[0] == TEXT('\\')) {
     76 	        *fsmode = "win";
     77 	        *devname = "";
     78 	        *unit = 0;
     79 	        *partition = 0;
     80 		*file = fname;
     81 	} else {
     82 		static char name[1024]; /* XXX */
     83 
     84 		if (wcstombs(name, (TCHAR*)fname, sizeof(name)) < 0) {
     85 			return (ENOENT);
     86 		}
     87 		if ('1' <= name[0] && name[0] <= '9' && name[1] == ':') {
     88 			*unit = name[0] - '0';
     89 			*file = &name[2];
     90 		} else {
     91 		        *unit = 1;
     92 			*file = name;
     93 		}
     94 	        *fsmode = "ufs";
     95 	        *devname = "DSK";
     96 	        *partition = 0;
     97 	}
     98 
     99 	return (0);
    100 }
    101 
    102 
    103 int
    104 devopen(struct open_file *f, const char *fname, char **file)
    105 {
    106         char           *devname;
    107         char           *fsmode;
    108         unsigned int    unit, partition;
    109         int             error;
    110 
    111         if ((error = parsebootfile(fname, &fsmode, &devname, &unit,
    112             &partition, (const char **) file)))
    113                 return (error);
    114 
    115         if (!strcmp(fsmode, "win")) {
    116                 file_system[0] = winop;
    117                 f->f_flags |= F_NODEV;  /* handled by Windows */
    118                 return (0);
    119 	} else
    120         if (!strcmp(fsmode, "ufs")) {
    121                 file_system[0] = ufsop;
    122 		f->f_dev = &devsw[0];	/* Windows block device. */
    123                 return (*f->f_dev->dv_open)(f, devname, unit, partition);
    124 	} else {
    125                 printf("no file system\n");
    126                 return (ENXIO);
    127 	}
    128 	/* NOTREACHED */
    129 }
    130