devopen.c revision 1.5.6.1
1 /* $NetBSD: devopen.c,v 1.5.6.1 2019/09/13 07:00:13 martin Exp $ */ 2 3 /*- 4 * Copyright (c) 2005 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Bang Jun-Young. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * Copyright (c) 1996, 1997 34 * Matthias Drochner. All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 45 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 46 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 47 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 48 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 49 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 50 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 51 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 52 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 53 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 54 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 55 */ 56 57 #include "efiboot.h" 58 59 #include <lib/libsa/dev_net.h> 60 61 #include <biosdisk.h> 62 #include "devopen.h" 63 #include <bootinfo.h> 64 #include "efidisk.h" 65 66 static int 67 dev2bios(char *devname, int unit, int *biosdev) 68 { 69 70 if (strcmp(devname, "hd") == 0) 71 *biosdev = 0x80 + unit; 72 else if (strcmp(devname, "cd") == 0) 73 *biosdev = 0x80 + get_harddrives() + unit; 74 else 75 return ENXIO; 76 77 return 0; 78 } 79 80 void 81 bios2dev(int biosdev, daddr_t sector, char **devname, int *unit, 82 int *partition, const char **part_name) 83 { 84 static char savedevname[MAXDEVNAME+1]; 85 86 *unit = biosdev & 0x7f; 87 88 if (efi_bootdp_type == BOOT_DEVICE_TYPE_NET) { 89 *devname = "net"; 90 *unit = efi_net_get_booted_interface_unit(); 91 if (*unit < 0) 92 *unit = 0; 93 *partition = 0; 94 return; 95 } else if (biosdev >= 0x80 + get_harddrives()) { 96 *devname = "cd"; 97 *unit -= get_harddrives(); 98 } else 99 *devname = "hd"; 100 101 (void)biosdisk_findpartition(biosdev, sector, partition, part_name); 102 if (*part_name != NULL) { 103 snprintf(savedevname, sizeof(savedevname), 104 "NAME=%s", *part_name); 105 *devname = savedevname; 106 } 107 } 108 109 struct btinfo_bootpath bibp; 110 extern bool kernel_loaded; 111 112 /* 113 * Open the EFI disk device 114 */ 115 int 116 devopen(struct open_file *f, const char *fname, char **file) 117 { 118 #if defined(SUPPORT_NFS) || defined(SUPPORT_TFTP) 119 static const char *net_devnames[] = { 120 #if defined(SUPPORT_NFS) 121 "nfs", 122 #endif 123 #if defined(SUPPORT_TFTP) 124 "tftp", 125 #endif 126 }; 127 #endif 128 struct devdesc desc; 129 struct devsw *dev; 130 char *fsname, *devname; 131 int unit, partition; 132 int biosdev; 133 int i, n, error; 134 135 error = parsebootfile(fname, &fsname, &devname, &unit, &partition, 136 (const char **) file); 137 if (error) 138 return error; 139 140 /* Search by GPT label or raidframe name */ 141 if ((strstr(devname, "NAME=") == devname) || 142 (strstr(devname, "raid") == devname)) { 143 f->f_dev = &devsw[0]; /* must be biosdisk */ 144 145 if (!kernel_loaded) { 146 strncpy(bibp.bootpath, *file, sizeof(bibp.bootpath)); 147 BI_ADD(&bibp, BTINFO_BOOTPATH, sizeof(bibp)); 148 } 149 150 error = biosdisk_open_name(f, devname); 151 return error; 152 } 153 154 memcpy(file_system, file_system_disk, sizeof(*file_system) * nfsys); 155 nfsys = nfsys_disk; 156 157 #if defined(SUPPORT_NFS) || defined(SUPPORT_TFTP) 158 for (i = 0; i < __arraycount(net_devnames); i++) { 159 if (strcmp(devname, net_devnames[i]) == 0) { 160 fsname = devname; 161 devname = "net"; 162 break; 163 } 164 } 165 #endif 166 167 for (i = 1; i < ndevs; i++) { 168 dev = &devsw[i]; 169 if (strcmp(devname, DEV_NAME(dev)) == 0) { 170 if (strcmp(devname, "net") == 0) { 171 n = 0; 172 #if defined(SUPPORT_NFS) 173 if (strcmp(fsname, "nfs") == 0) { 174 memcpy(&file_system[n++], &file_system_nfs, 175 sizeof(file_system_nfs)); 176 } else 177 #endif 178 #if defined(SUPPORT_TFTP) 179 if (strcmp(fsname, "tftp") == 0) { 180 memcpy(&file_system[n++], &file_system_tftp, 181 sizeof(file_system_tftp)); 182 } else 183 #endif 184 { 185 #if defined(SUPPORT_NFS) 186 memcpy(&file_system[n++], &file_system_nfs, 187 sizeof(file_system_nfs)); 188 #endif 189 #if defined(SUPPORT_TFTP) 190 memcpy(&file_system[n++], &file_system_tftp, 191 sizeof(file_system_tftp)); 192 #endif 193 } 194 nfsys = n; 195 196 try_bootp = 1; 197 } 198 199 memset(&desc, 0, sizeof(desc)); 200 strlcpy(desc.d_name, devname, sizeof(desc.d_name)); 201 desc.d_unit = unit; 202 203 f->f_dev = dev; 204 if (!kernel_loaded) { 205 strncpy(bibp.bootpath, *file, 206 sizeof(bibp.bootpath)); 207 BI_ADD(&bibp, BTINFO_BOOTPATH, sizeof(bibp)); 208 } 209 return DEV_OPEN(f->f_dev)(f, &desc); 210 } 211 } 212 213 /* 214 * biosdisk 215 */ 216 if (strcmp(devname, "esp") == 0) { 217 bios2dev(boot_biosdev, boot_biossector, &devname, &unit, 218 &partition, NULL); 219 if (efidisk_get_efi_system_partition(boot_biosdev, &partition)) 220 return ENXIO; 221 } 222 223 error = dev2bios(devname, unit, &biosdev); 224 if (error) 225 return error; 226 227 f->f_dev = &devsw[0]; /* must be biosdisk */ 228 229 if (!kernel_loaded) { 230 strncpy(bibp.bootpath, *file, sizeof(bibp.bootpath)); 231 BI_ADD(&bibp, BTINFO_BOOTPATH, sizeof(bibp)); 232 } 233 234 return biosdisk_open(f, biosdev, partition); 235 } 236
Indexes created Fri Oct 03 02:09:57 GMT 2025