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1f7315a3 | 1 | /* |
4b13b216 | 2 | * GRUB -- GRand Unified Bootloader |
0b412211 | 3 | * Copyright (C) 2003, 2004, 2005 Free Software Foundation, Inc. |
1f7315a3 | 4 | * |
4b13b216 | 5 | * GRUB is free software; you can redistribute it and/or modify |
1f7315a3 | 6 | * it under the terms of the GNU General Public License as published by |
7 | * the Free Software Foundation; either version 2 of the License, or | |
8 | * (at your option) any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
4b13b216 | 16 | * along with GRUB; if not, write to the Free Software |
1f7315a3 | 17 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
18 | */ | |
19 | ||
20 | #include <stdlib.h> | |
21 | #include <malloc.h> | |
22 | #include <sys/stat.h> | |
23 | #include <argp.h> | |
24 | #include <string.h> | |
e6b92c8a | 25 | #include <signal.h> |
0a74e62f | 26 | #include <sys/types.h> |
27 | #include <unistd.h> | |
1f7315a3 | 28 | |
4b13b216 | 29 | #include <grub/mm.h> |
30 | #include <grub/setjmp.h> | |
31 | #include <grub/fs.h> | |
32 | #include <grub/i386/pc/util/biosdisk.h> | |
33 | #include <grub/dl.h> | |
8ceafda2 | 34 | #include <grub/machine/console.h> |
4b13b216 | 35 | #include <grub/util/misc.h> |
36 | #include <grub/kernel.h> | |
37 | #include <grub/normal.h> | |
38 | #include <grub/util/getroot.h> | |
39 | #include <grub/env.h> | |
3f1578fe | 40 | #include <grub/partition.h> |
1f7315a3 | 41 | |
42 | #ifdef __NetBSD__ | |
43 | /* NetBSD uses /boot for its boot block. */ | |
4b13b216 | 44 | # define DEFAULT_DIRECTORY "/grub" |
1f7315a3 | 45 | #else |
4b13b216 | 46 | # define DEFAULT_DIRECTORY "/boot/grub" |
1f7315a3 | 47 | #endif |
48 | ||
49 | #define DEFAULT_DEVICE_MAP DEFAULT_DIRECTORY "/device.map" | |
50 | ||
e6b92c8a | 51 | /* Used for going back to the main function. */ |
52 | jmp_buf main_env; | |
53 | ||
0b412211 | 54 | grub_addr_t |
55 | grub_arch_modules_addr (void) | |
56 | { | |
57 | return 0; | |
58 | } | |
1f7315a3 | 59 | |
c642636f | 60 | grub_err_t |
61 | grub_arch_dl_check_header (void *ehdr) | |
1f7315a3 | 62 | { |
63 | (void) ehdr; | |
1f7315a3 | 64 | |
4b13b216 | 65 | return GRUB_ERR_BAD_MODULE; |
1f7315a3 | 66 | } |
67 | ||
4b13b216 | 68 | grub_err_t |
69 | grub_arch_dl_relocate_symbols (grub_dl_t mod, void *ehdr) | |
1f7315a3 | 70 | { |
71 | (void) mod; | |
72 | (void) ehdr; | |
73 | ||
4b13b216 | 74 | return GRUB_ERR_BAD_MODULE; |
1f7315a3 | 75 | } |
76 | ||
77 | void | |
4b13b216 | 78 | grub_machine_init (void) |
1f7315a3 | 79 | { |
e6b92c8a | 80 | signal (SIGINT, SIG_IGN); |
4b13b216 | 81 | grub_console_init (); |
1f7315a3 | 82 | } |
e6b92c8a | 83 | |
84 | void | |
85 | grub_machine_fini (void) | |
86 | { | |
87 | grub_console_fini (); | |
88 | } | |
1f7315a3 | 89 | \f |
90 | ||
91 | const char *argp_program_version = PACKAGE_STRING; | |
92 | const char *argp_program_bug_address = PACKAGE_BUGREPORT; | |
4b13b216 | 93 | static char doc[] = "GRUB emulator"; |
1f7315a3 | 94 | |
95 | static struct argp_option options[] = { | |
db1771cf | 96 | {"root-device", 'r', "DEV", 0, "use DEV as the root device [default=guessed]", 0}, |
97 | {"device-map", 'm', "FILE", 0, "use FILE as the device map", 0}, | |
4b13b216 | 98 | {"directory", 'd', "DIR", 0, "use GRUB files in the directory DIR", 0}, |
db1771cf | 99 | {"verbose", 'v', 0 , 0, "print verbose messages", 0}, |
0a74e62f | 100 | {"hold", 'H', "SECONDS", OPTION_ARG_OPTIONAL, "wait until a debugger will attach", 0}, |
db1771cf | 101 | { 0, 0, 0, 0, 0, 0 } |
1f7315a3 | 102 | }; |
103 | ||
104 | struct arguments | |
105 | { | |
106 | char *root_dev; | |
107 | char *dev_map; | |
108 | char *dir; | |
0a74e62f | 109 | int hold; |
1f7315a3 | 110 | }; |
111 | ||
112 | static error_t | |
113 | parse_opt (int key, char *arg, struct argp_state *state) | |
114 | { | |
115 | struct arguments *args = state->input; | |
116 | ||
117 | switch (key) | |
118 | { | |
119 | case 'r': | |
120 | args->root_dev = arg; | |
121 | break; | |
122 | case 'd': | |
123 | args->dir = arg; | |
124 | break; | |
125 | case 'm': | |
126 | args->dev_map = arg; | |
127 | break; | |
128 | case 'v': | |
129 | verbosity++; | |
130 | break; | |
0a74e62f | 131 | case 'H': |
132 | args->hold = arg ? atoi (arg) : -1; | |
133 | break; | |
1f7315a3 | 134 | case ARGP_KEY_END: |
135 | break; | |
136 | default: | |
137 | return ARGP_ERR_UNKNOWN; | |
138 | } | |
139 | return 0; | |
140 | } | |
141 | ||
db1771cf | 142 | static struct argp argp = {options, parse_opt, 0, doc, 0, 0, 0}; |
1f7315a3 | 143 | \f |
144 | ||
145 | int | |
146 | main (int argc, char *argv[]) | |
147 | { | |
148 | char *prefix = 0; | |
149 | char rootprefix[100]; | |
150 | struct arguments args = | |
151 | { | |
152 | .dir = DEFAULT_DIRECTORY, | |
0a74e62f | 153 | .dev_map = DEFAULT_DEVICE_MAP, |
154 | .hold = 0 | |
1f7315a3 | 155 | }; |
777aff39 | 156 | |
157 | progname = "grub-emu"; | |
158 | ||
1f7315a3 | 159 | argp_parse (&argp, argc, argv, 0, 0, &args); |
160 | ||
0a74e62f | 161 | /* Wait until the ARGS.HOLD variable is cleared by an attached debugger. */ |
162 | if (args.hold && verbosity > 0) | |
163 | printf ("Run \"gdb %s %d\", and set ARGS.HOLD to zero.\n", | |
164 | progname, (int) getpid ()); | |
165 | while (args.hold) | |
166 | { | |
167 | if (args.hold > 0) | |
168 | args.hold--; | |
169 | ||
170 | sleep (1); | |
171 | } | |
172 | ||
e6b92c8a | 173 | /* Make sure that there is a root device. */ |
1f7315a3 | 174 | if (! args.root_dev) |
175 | { | |
4b13b216 | 176 | args.root_dev = grub_guess_root_device (args.dir ? : DEFAULT_DIRECTORY); |
1f7315a3 | 177 | if (! args.root_dev) |
178 | { | |
4b13b216 | 179 | grub_util_info ("guessing the root device failed, because of `%s'", |
180 | grub_errmsg); | |
181 | grub_util_error ("Cannot guess the root device. Specify the option ``--root-device''."); | |
1f7315a3 | 182 | } |
183 | } | |
184 | ||
4b13b216 | 185 | prefix = grub_get_prefix (args.dir ? : DEFAULT_DIRECTORY); |
1f7315a3 | 186 | sprintf (rootprefix, "%s%s", args.root_dev, prefix); |
db1771cf | 187 | |
4b13b216 | 188 | grub_env_set ("prefix", rootprefix); |
1f7315a3 | 189 | |
190 | /* XXX: This is a bit unportable. */ | |
4b13b216 | 191 | grub_util_biosdisk_init (args.dev_map); |
3f1578fe | 192 | grub_pc_partition_map_init (); |
193 | grub_amiga_partition_map_init (); | |
194 | grub_apple_partition_map_init (); | |
4ed2e1dd | 195 | grub_sun_partition_map_init (); |
1f7315a3 | 196 | |
197 | /* Initialize the default modules. */ | |
ad0bd20b | 198 | grub_iso9660_init (); |
b4093103 | 199 | grub_xfs_init (); |
4b13b216 | 200 | grub_fat_init (); |
201 | grub_ext2_init (); | |
66e19ef8 | 202 | grub_ufs_init (); |
203 | grub_minix_init (); | |
64372eb4 | 204 | grub_hfs_init (); |
aa033560 | 205 | grub_jfs_init (); |
b2499b29 | 206 | grub_xfs_init (); |
4b13b216 | 207 | grub_ls_init (); |
208 | grub_boot_init (); | |
209 | grub_cmp_init (); | |
210 | grub_cat_init (); | |
211 | grub_terminal_init (); | |
67bbaf0f | 212 | grub_loop_init (); |
990cf3aa | 213 | grub_help_init (); |
e6b92c8a | 214 | grub_halt_init (); |
215 | grub_reboot_init (); | |
93f3a1d8 | 216 | grub_default_init (); |
217 | grub_timeout_init (); | |
062aaf39 | 218 | grub_configfile_init (); |
6a85ce79 | 219 | grub_search_init (); |
67bbaf0f | 220 | |
1f7315a3 | 221 | /* XXX: Should normal mode be started by default? */ |
4b13b216 | 222 | grub_normal_init (); |
223 | ||
224 | /* Start GRUB! */ | |
e6b92c8a | 225 | if (setjmp (main_env) == 0) |
226 | grub_main (); | |
4b13b216 | 227 | |
6a85ce79 | 228 | grub_search_fini (); |
062aaf39 | 229 | grub_configfile_fini (); |
93f3a1d8 | 230 | grub_timeout_fini (); |
231 | grub_default_fini (); | |
e6b92c8a | 232 | grub_reboot_fini (); |
233 | grub_halt_fini (); | |
990cf3aa | 234 | grub_help_fini (); |
67bbaf0f | 235 | grub_loop_fini (); |
4b13b216 | 236 | grub_util_biosdisk_fini (); |
237 | grub_normal_fini (); | |
b2499b29 | 238 | grub_xfs_fini (); |
66e19ef8 | 239 | grub_ufs_fini (); |
4b13b216 | 240 | grub_ext2_fini (); |
66e19ef8 | 241 | grub_minix_fini (); |
64372eb4 | 242 | grub_hfs_fini (); |
aa033560 | 243 | grub_jfs_fini (); |
4b13b216 | 244 | grub_fat_fini (); |
b4093103 | 245 | grub_xfs_fini (); |
4b13b216 | 246 | grub_boot_fini (); |
247 | grub_cmp_fini (); | |
248 | grub_cat_fini (); | |
249 | grub_terminal_fini (); | |
3f1578fe | 250 | grub_amiga_partition_map_fini (); |
251 | grub_pc_partition_map_fini (); | |
252 | grub_apple_partition_map_fini (); | |
4ed2e1dd | 253 | grub_sun_partition_map_fini (); |
e6b92c8a | 254 | |
255 | grub_machine_fini (); | |
3f1578fe | 256 | |
1f7315a3 | 257 | return 0; |
258 | } |