devopen.c revision 1.5.2.2
1 1.5.2.2 jdolecek /* $NetBSD: devopen.c,v 1.5.2.2 2001/06/01 23:26:32 jdolecek Exp $ */ 2 1.5.2.2 jdolecek 3 1.5.2.2 jdolecek /* 4 1.5.2.2 jdolecek * Copyright (c) 1996 5 1.5.2.2 jdolecek * Matthias Drochner. All rights reserved. 6 1.5.2.2 jdolecek * 7 1.5.2.2 jdolecek * Redistribution and use in source and binary forms, with or without 8 1.5.2.2 jdolecek * modification, are permitted provided that the following conditions 9 1.5.2.2 jdolecek * are met: 10 1.5.2.2 jdolecek * 1. Redistributions of source code must retain the above copyright 11 1.5.2.2 jdolecek * notice, this list of conditions and the following disclaimer. 12 1.5.2.2 jdolecek * 2. Redistributions in binary form must reproduce the above copyright 13 1.5.2.2 jdolecek * notice, this list of conditions and the following disclaimer in the 14 1.5.2.2 jdolecek * documentation and/or other materials provided with the distribution. 15 1.5.2.2 jdolecek * 3. All advertising materials mentioning features or use of this software 16 1.5.2.2 jdolecek * must display the following acknowledgement: 17 1.5.2.2 jdolecek * This product includes software developed for the NetBSD Project 18 1.5.2.2 jdolecek * by Matthias Drochner. 19 1.5.2.2 jdolecek * 4. The name of the author may not be used to endorse or promote products 20 1.5.2.2 jdolecek * derived from this software without specific prior written permission. 21 1.5.2.2 jdolecek * 22 1.5.2.2 jdolecek * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 23 1.5.2.2 jdolecek * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 24 1.5.2.2 jdolecek * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 25 1.5.2.2 jdolecek * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 26 1.5.2.2 jdolecek * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27 1.5.2.2 jdolecek * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 1.5.2.2 jdolecek * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 1.5.2.2 jdolecek * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 1.5.2.2 jdolecek * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31 1.5.2.2 jdolecek * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 1.5.2.2 jdolecek */ 33 1.5.2.2 jdolecek 34 1.5.2.2 jdolecek 35 1.5.2.2 jdolecek #include <lib/libsa/stand.h> 36 1.5.2.2 jdolecek #include <lib/libkern/libkern.h> 37 1.5.2.2 jdolecek #include <lib/libsa/ufs.h> 38 1.5.2.2 jdolecek 39 1.5.2.2 jdolecek #include <libi386.h> 40 1.5.2.2 jdolecek #include <biosdisk.h> 41 1.5.2.2 jdolecek #include <dosfile.h> 42 1.5.2.2 jdolecek #include <bootinfo.h> 43 1.5.2.2 jdolecek 44 1.5.2.2 jdolecek struct devsw devsw[] = { 45 1.5.2.2 jdolecek {"disk", biosdiskstrategy, biosdiskopen, biosdiskclose, biosdiskioctl}, 46 1.5.2.2 jdolecek }; 47 1.5.2.2 jdolecek int ndevs = sizeof(devsw) / sizeof(struct devsw); 48 1.5.2.2 jdolecek 49 1.5.2.2 jdolecek static struct fs_ops dosfs = { 50 1.5.2.2 jdolecek dos_open, dos_close, dos_read, dos_write, dos_seek, dos_stat 51 1.5.2.2 jdolecek }; 52 1.5.2.2 jdolecek static struct fs_ops ufsfs = { 53 1.5.2.2 jdolecek ufs_open, ufs_close, ufs_read, ufs_write, ufs_seek, ufs_stat 54 1.5.2.2 jdolecek }; 55 1.5.2.2 jdolecek 56 1.5.2.2 jdolecek struct fs_ops file_system[] = { 57 1.5.2.2 jdolecek {0}, 58 1.5.2.2 jdolecek }; 59 1.5.2.2 jdolecek int nfsys = 1; 60 1.5.2.2 jdolecek 61 1.5.2.2 jdolecek static struct { 62 1.5.2.2 jdolecek char *name; 63 1.5.2.2 jdolecek int biosdev; 64 1.5.2.2 jdolecek } biosdevtab[] = { 65 1.5.2.2 jdolecek { 66 1.5.2.2 jdolecek "fd", 0 67 1.5.2.2 jdolecek }, 68 1.5.2.2 jdolecek { 69 1.5.2.2 jdolecek "wd", 0x80 70 1.5.2.2 jdolecek }, 71 1.5.2.2 jdolecek { 72 1.5.2.2 jdolecek "sd", 0x80 73 1.5.2.2 jdolecek }, 74 1.5.2.2 jdolecek { 75 1.5.2.2 jdolecek "hd", 0x80 76 1.5.2.2 jdolecek } 77 1.5.2.2 jdolecek }; 78 1.5.2.2 jdolecek #define NUMBIOSDEVS (sizeof(biosdevtab) / sizeof(biosdevtab[0])) 79 1.5.2.2 jdolecek 80 1.5.2.2 jdolecek static int dev2bios __P((char *, unsigned int, int *)); 81 1.5.2.2 jdolecek 82 1.5.2.2 jdolecek static int 83 1.5.2.2 jdolecek dev2bios(devname, unit, biosdev) 84 1.5.2.2 jdolecek char *devname; 85 1.5.2.2 jdolecek unsigned int unit; 86 1.5.2.2 jdolecek int *biosdev; 87 1.5.2.2 jdolecek { 88 1.5.2.2 jdolecek int i; 89 1.5.2.2 jdolecek 90 1.5.2.2 jdolecek for (i = 0; i < NUMBIOSDEVS; i++) 91 1.5.2.2 jdolecek if (!strcmp(devname, biosdevtab[i].name)) { 92 1.5.2.2 jdolecek *biosdev = biosdevtab[i].biosdev + unit; 93 1.5.2.2 jdolecek if (unit >= 4) /* ??? */ 94 1.5.2.2 jdolecek return (EUNIT); 95 1.5.2.2 jdolecek return (0); 96 1.5.2.2 jdolecek } 97 1.5.2.2 jdolecek return (ENXIO); 98 1.5.2.2 jdolecek } 99 1.5.2.2 jdolecek 100 1.5.2.2 jdolecek struct btinfo_bootpath bibp; 101 1.5.2.2 jdolecek 102 1.5.2.2 jdolecek int 103 1.5.2.2 jdolecek devopen(f, fname, file) 104 1.5.2.2 jdolecek struct open_file *f; 105 1.5.2.2 jdolecek const char *fname; 106 1.5.2.2 jdolecek char **file; 107 1.5.2.2 jdolecek { 108 1.5.2.2 jdolecek char *devname; 109 1.5.2.2 jdolecek char *fsmode; 110 1.5.2.2 jdolecek unsigned int unit, partition; 111 1.5.2.2 jdolecek int biosdev; 112 1.5.2.2 jdolecek int error; 113 1.5.2.2 jdolecek struct devsw *dp; 114 1.5.2.2 jdolecek 115 1.5.2.2 jdolecek if ((error = parsebootfile(fname, &fsmode, &devname, &unit, 116 1.5.2.2 jdolecek &partition, (const char **) file))) 117 1.5.2.2 jdolecek return (error); 118 1.5.2.2 jdolecek 119 1.5.2.2 jdolecek if (!strcmp(fsmode, "dos")) { 120 1.5.2.2 jdolecek file_system[0] = dosfs; /* structure assignment! */ 121 1.5.2.2 jdolecek f->f_flags |= F_NODEV; /* handled by DOS */ 122 1.5.2.2 jdolecek return (0); 123 1.5.2.2 jdolecek } else if (!strcmp(fsmode, "ufs")) { 124 1.5.2.2 jdolecek if ((error = dev2bios(devname, unit, &biosdev))) 125 1.5.2.2 jdolecek return (error); 126 1.5.2.2 jdolecek file_system[0] = ufsfs; /* structure assignment! */ 127 1.5.2.2 jdolecek dp = &devsw[0]; /* must be biosdisk */ 128 1.5.2.2 jdolecek f->f_dev = dp; 129 1.5.2.2 jdolecek 130 1.5.2.2 jdolecek strncpy(bibp.bootpath, *file, sizeof(bibp.bootpath)); 131 1.5.2.2 jdolecek BI_ADD(&bibp, BTINFO_BOOTPATH, sizeof(bibp)); 132 1.5.2.2 jdolecek 133 1.5.2.2 jdolecek return (biosdiskopen(f, biosdev, partition)); 134 1.5.2.2 jdolecek } else { 135 1.5.2.2 jdolecek printf("no file system\n"); 136 1.5.2.2 jdolecek return (ENXIO); 137 1.5.2.2 jdolecek } 138 1.5.2.2 jdolecek /* NOTREACHED */ 139 1.5.2.2 jdolecek } 140
Indexes created Wed Oct 01 18:09:54 GMT 2025