Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1 | /* Copyright 1986-1992 Emmet P. Gray. |
| 2 | * Copyright 1994,1996-2009 Alain Knaff. |
| 3 | * This file is part of mtools. |
| 4 | * |
| 5 | * Mtools is free software: you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation, either version 3 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * Mtools 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 |
| 16 | * along with Mtools. If not, see <http://www.gnu.org/licenses/>. |
| 17 | * |
| 18 | * mformat.c |
| 19 | */ |
| 20 | |
| 21 | #define DONT_NEED_WAIT |
| 22 | |
| 23 | #include "sysincludes.h" |
| 24 | #include "msdos.h" |
| 25 | #include "mtools.h" |
| 26 | #include "mainloop.h" |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 27 | #include "device.h" |
| 28 | #include "old_dos.h" |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 29 | #include "fsP.h" |
| 30 | #include "file.h" |
| 31 | #include "plain_io.h" |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 32 | #include "nameclash.h" |
| 33 | #include "buffer.h" |
| 34 | #ifdef HAVE_ASSERT_H |
| 35 | #include <assert.h> |
| 36 | #endif |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 37 | #include "stream.h" |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 38 | #include "partition.h" |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 39 | #include "open_image.h" |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 40 | #include "file_name.h" |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 41 | #include "lba.h" |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 42 | |
| 43 | #ifdef OS_linux |
| 44 | #include "linux/hdreg.h" |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 45 | #include "linux/fs.h" |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 46 | |
| 47 | #endif |
| 48 | |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 49 | static uint16_t init_geometry_boot(union bootsector *boot, struct device *dev, |
| 50 | uint8_t sectors0, |
| 51 | uint8_t rate_0, uint8_t rate_any, |
| 52 | uint32_t *tot_sectors, int keepBoot) |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 53 | { |
| 54 | int nb_renum; |
| 55 | int sector2; |
| 56 | int sum; |
| 57 | |
| 58 | set_word(boot->boot.nsect, dev->sectors); |
| 59 | set_word(boot->boot.nheads, dev->heads); |
| 60 | |
| 61 | #ifdef HAVE_ASSERT_H |
| 62 | assert(*tot_sectors != 0); |
| 63 | #endif |
| 64 | |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 65 | if (*tot_sectors <= UINT16_MAX && dev->hidden <= UINT16_MAX){ |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 66 | set_word(boot->boot.psect, (uint16_t) *tot_sectors); |
| 67 | set_dword(boot->boot.bigsect, 0); |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 68 | set_word(boot->boot.nhs, (uint16_t) dev->hidden); |
| 69 | } else { |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 70 | set_word(boot->boot.psect, 0); |
| 71 | set_dword(boot->boot.bigsect, (uint32_t) *tot_sectors); |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 72 | set_dword(boot->boot.nhs, dev->hidden); |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 73 | } |
| 74 | |
| 75 | if (dev->use_2m & 0x7f){ |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 76 | uint16_t bootOffset; |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 77 | uint8_t j; |
| 78 | uint8_t size2; |
| 79 | uint16_t i; |
| 80 | strncpy(boot->boot.banner, "2M-STV04", 8); |
| 81 | boot->boot.ext.old.res_2m = 0; |
| 82 | boot->boot.ext.old.fmt_2mf = 6; |
| 83 | if ( dev->sectors % ( ((1 << dev->ssize) + 3) >> 2 )) |
| 84 | boot->boot.ext.old.wt = 1; |
| 85 | else |
| 86 | boot->boot.ext.old.wt = 0; |
| 87 | boot->boot.ext.old.rate_0= rate_0; |
| 88 | boot->boot.ext.old.rate_any= rate_any; |
| 89 | if (boot->boot.ext.old.rate_any== 2 ) |
| 90 | boot->boot.ext.old.rate_any= 1; |
| 91 | i=76; |
| 92 | |
| 93 | /* Infp0 */ |
| 94 | set_word(boot->boot.ext.old.Infp0, i); |
| 95 | boot->bytes[i++] = sectors0; |
| 96 | boot->bytes[i++] = 108; |
| 97 | for(j=1; j<= sectors0; j++) |
| 98 | boot->bytes[i++] = j; |
| 99 | |
| 100 | set_word(boot->boot.ext.old.InfpX, i); |
| 101 | |
| 102 | boot->bytes[i++] = 64; |
| 103 | boot->bytes[i++] = 3; |
| 104 | nb_renum = i++; |
| 105 | sector2 = dev->sectors; |
| 106 | size2 = dev->ssize; |
| 107 | j=1; |
| 108 | while( sector2 ){ |
| 109 | while ( sector2 < (1 << size2) >> 2 ) |
| 110 | size2--; |
| 111 | boot->bytes[i++] = 128 + j; |
| 112 | boot->bytes[i++] = j++; |
| 113 | boot->bytes[i++] = size2; |
| 114 | sector2 -= (1 << size2) >> 2; |
| 115 | } |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 116 | boot->bytes[nb_renum] = (uint8_t)(( i - nb_renum - 1 )/3); |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 117 | |
| 118 | set_word(boot->boot.ext.old.InfTm, i); |
| 119 | |
| 120 | sector2 = dev->sectors; |
| 121 | size2= dev->ssize; |
| 122 | while(sector2){ |
| 123 | while ( sector2 < 1 << ( size2 - 2) ) |
| 124 | size2--; |
| 125 | boot->bytes[i++] = size2; |
| 126 | sector2 -= 1 << (size2 - 2 ); |
| 127 | } |
| 128 | |
| 129 | set_word(boot->boot.ext.old.BootP,i); |
| 130 | bootOffset = i; |
| 131 | |
| 132 | /* checksum */ |
| 133 | for (sum=0, j=64; j<i; j++) |
| 134 | sum += boot->bytes[j];/* checksum */ |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 135 | boot->boot.ext.old.CheckSum=(unsigned char)-sum; |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 136 | return bootOffset; |
| 137 | } else { |
| 138 | if(!keepBoot) { |
| 139 | boot->boot.jump[0] = 0xeb; |
| 140 | boot->boot.jump[1] = 0; |
| 141 | boot->boot.jump[2] = 0x90; |
| 142 | strncpy(boot->boot.banner, mformat_banner, 8); |
| 143 | /* It looks like some versions of DOS are |
| 144 | * rather picky about this, and assume default |
| 145 | * parameters without this, ignoring any |
| 146 | * indication about cluster size et al. */ |
| 147 | } |
| 148 | return 0; |
| 149 | } |
| 150 | } |
| 151 | |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 152 | static unsigned char bootprog[]= |
| 153 | {0xfa, 0x31, 0xc0, 0x8e, 0xd8, 0x8e, 0xc0, 0xfc, 0xb9, 0x00, 0x01, |
| 154 | 0xbe, 0x00, 0x7c, 0xbf, 0x00, 0x80, 0xf3, 0xa5, 0xea, 0x00, 0x00, |
| 155 | 0x00, 0x08, 0xb8, 0x01, 0x02, 0xbb, 0x00, 0x7c, 0xba, 0x80, 0x00, |
| 156 | 0xb9, 0x01, 0x00, 0xcd, 0x13, 0x72, 0x05, 0xea, 0x00, 0x7c, 0x00, |
| 157 | 0x00, 0xcd, 0x19}; |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 158 | |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 159 | static __inline__ void inst_boot_prg(union bootsector *boot, uint16_t offset) |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 160 | { |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 161 | memcpy(boot->bytes + offset, bootprog, sizeof(bootprog)); |
| 162 | if(offset - 2 < 0x80) { |
| 163 | /* short jump */ |
| 164 | boot->boot.jump[0] = 0xeb; |
| 165 | boot->boot.jump[1] = (uint8_t) (offset -2); |
| 166 | boot->boot.jump[2] = 0x90; |
| 167 | } else { |
| 168 | /* long jump, if offset is too large */ |
| 169 | boot->boot.jump[0] = 0xe9; |
| 170 | boot->boot.jump[1] = (uint8_t) (offset - 3); |
| 171 | boot->boot.jump[2] = (uint8_t) ( (offset - 3) >> 8); |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 172 | } |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 173 | set_word(boot->boot.jump + offset + 20, offset + 24); |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 174 | } |
| 175 | |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 176 | /* Set up the root directory */ |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 177 | static __inline__ void format_root(Fs_t *Fs, char *label, union bootsector *boot) |
| 178 | { |
| 179 | Stream_t *RootDir; |
| 180 | char *buf; |
| 181 | unsigned int i; |
| 182 | struct ClashHandling_t ch; |
| 183 | unsigned int dirlen; |
| 184 | |
| 185 | init_clash_handling(&ch); |
| 186 | ch.name_converter = label_name_uc; |
| 187 | ch.ignore_entry = -2; |
| 188 | |
| 189 | buf = safe_malloc(Fs->sector_size); |
| 190 | RootDir = OpenRoot((Stream_t *)Fs); |
| 191 | if(!RootDir){ |
| 192 | fprintf(stderr,"Could not open root directory\n"); |
| 193 | exit(1); |
| 194 | } |
| 195 | |
| 196 | memset(buf, '\0', Fs->sector_size); |
| 197 | |
| 198 | if(Fs->fat_bits == 32) { |
| 199 | /* on a FAT32 system, we only write one sector, |
| 200 | * as the directory can be extended at will...*/ |
| 201 | dirlen = Fs->cluster_size; |
| 202 | fatAllocate(Fs, Fs->rootCluster, Fs->end_fat); |
| 203 | } else |
| 204 | dirlen = Fs->dir_len; |
| 205 | for (i = 0; i < dirlen; i++) |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 206 | PWRITES(RootDir, buf, sectorsToBytes(Fs, i), |
| 207 | Fs->sector_size); |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 208 | |
| 209 | ch.ignore_entry = 1; |
| 210 | if(label[0]) |
| 211 | mwrite_one(RootDir,label, 0, labelit, NULL,&ch); |
| 212 | |
| 213 | FREE(&RootDir); |
| 214 | if(Fs->fat_bits == 32) |
| 215 | set_word(boot->boot.dirents, 0); |
| 216 | else |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 217 | set_word(boot->boot.dirents, |
| 218 | (uint16_t) (Fs->dir_len * (Fs->sector_size / 32))); |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 219 | free(buf); |
| 220 | } |
| 221 | |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 222 | /* |
| 223 | * Calculate length of one FAT, in sectors, given the number of total sectors |
| 224 | * Returns |
| 225 | * -2: if there are less total sectors than even clus_start |
| 226 | * 0: if a length was successfully calculated. (in that case, it is filled |
| 227 | * into Fs->fat_len) |
| 228 | * 1: if the specified number of FAT bits cannot accomodate that many |
| 229 | * sectors => caller should raise FAT bits |
| 230 | */ |
| 231 | static int calc_fat_len(Fs_t *Fs, uint32_t tot_sectors) |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 232 | { |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 233 | uint32_t rem_sect; |
| 234 | uint32_t numerator; |
| 235 | uint32_t denominator; |
| 236 | uint32_t corr=0; /* correct numeric overflow */ |
| 237 | uint32_t clus_start; |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 238 | unsigned int fat_nybbles; |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 239 | |
| 240 | #ifdef HAVE_ASSERT_H |
| 241 | assert(Fs->fat_bits != 0); |
| 242 | #endif |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 243 | |
| 244 | #ifdef DEBUG |
| 245 | fprintf(stderr, "Fat start=%d\n", Fs->fat_start); |
| 246 | fprintf(stderr, "tot_sectors=%lu\n", tot_sectors); |
| 247 | fprintf(stderr, "dir_len=%d\n", Fs->dir_len); |
| 248 | #endif |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 249 | Fs->fat_len = 0; |
| 250 | clus_start = calc_clus_start(Fs); |
| 251 | if(tot_sectors < clus_start) |
| 252 | return -2; |
| 253 | rem_sect = tot_sectors - clus_start; |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 254 | |
| 255 | /* Cheat a little bit to address the _really_ common case of |
| 256 | odd number of remaining sectors while both nfat and cluster size |
| 257 | are even... */ |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 258 | if(rem_sect % 2 == 1 && |
| 259 | Fs->num_fat % 2 == 0 && |
| 260 | Fs->cluster_size % 2 == 0) |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 261 | rem_sect--; |
| 262 | |
| 263 | #ifdef DEBUG |
| 264 | fprintf(stderr, "Rem sect=%lu\n", rem_sect); |
| 265 | #endif |
| 266 | |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 267 | /* See fat_size_calculation.tex or |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 268 | (https://www.gnu.org/gnu/mtools/manual/fat_size_calculation.pdf) |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 269 | for an explantation about why the stuff below works... |
| 270 | */ |
| 271 | |
| 272 | fat_nybbles = Fs->fat_bits / 4; |
| 273 | numerator = rem_sect+2*Fs->cluster_size; |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 274 | /* Might overflow, but will be cancelled out below. As the |
| 275 | operation is unsigned, a posteriori fixup is allowable, as |
| 276 | wrap-around is part of the spec. For *signed* quantities, |
| 277 | this hack would be incorrect, as it would be "undefined |
| 278 | behavior" */ |
| 279 | |
| 280 | /* Initial denominator is nybbles consumed by one cluster, both in |
| 281 | * FAT and in cluster space */ |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 282 | denominator = |
| 283 | Fs->cluster_size * Fs->sector_size * 2 + |
| 284 | Fs->num_fat * fat_nybbles; |
| 285 | |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 286 | if(fat_nybbles == 3) { |
| 287 | /* We need to do this test here, or multiplying rem_sect with |
| 288 | * fat_nybbles might overflow */ |
| 289 | if(rem_sect > 256 * FAT12) |
| 290 | return 1; |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 291 | numerator *= fat_nybbles; |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 292 | } else |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 293 | /* Avoid numerical overflows, divide the denominator |
| 294 | * rather than multiplying the numerator */ |
| 295 | denominator = denominator / fat_nybbles; |
| 296 | |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 297 | /* Substract denominator from numerator to "cancel out" an |
| 298 | unsigned integer overflow which might have happened with |
| 299 | total number of sectors very near maximum (2^32-1) and huge |
| 300 | cluster size. This substraction removes 1 from the result |
| 301 | of the following division, so we will add 1 again after the |
| 302 | division. However, we only do this if (original) numerator |
| 303 | is bigger than denominator though, as otherwise we risk the |
| 304 | inverse problem of going below 0 on small disks */ |
| 305 | if(rem_sect > denominator) { |
| 306 | numerator -= denominator; |
| 307 | corr++; |
| 308 | } |
| 309 | |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 310 | #ifdef DEBUG |
| 311 | fprintf(stderr, "Numerator=%lu denominator=%lu\n", |
| 312 | numerator, denominator); |
| 313 | #endif |
| 314 | |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 315 | Fs->fat_len = (numerator-1)/denominator+1+corr; |
| 316 | return 0; |
| 317 | } |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 318 | |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 319 | /* Is there enough space in the FAT for the descriptors for all clusters. |
| 320 | * This only works if we assume that it is already clear that Fs->num_clus is |
| 321 | * less than FAT32, or else it might overflow */ |
| 322 | static inline bool clusters_fit_into_fat(Fs_t *Fs) { |
| 323 | return ((Fs->num_clus+2) * (Fs->fat_bits/4) - 1) / (Fs->sector_size*2) < |
| 324 | Fs->fat_len; |
| 325 | } |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 326 | |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 327 | /* |
| 328 | * Assert that FAT param calculation has been performed correctly, and |
| 329 | * set_fat |
| 330 | */ |
| 331 | static void check_fs_params_and_set_fat(Fs_t *Fs, uint32_t tot_sectors) |
| 332 | { |
| 333 | unsigned int provisional_fat_bits; |
| 334 | |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 335 | #ifdef DEBUG |
| 336 | fprintf(stderr, "Num_clus=%d fat_len=%d nybbles=%d\n", |
| 337 | Fs->num_clus, Fs->fat_len, fat_nybbles); |
| 338 | #endif |
| 339 | |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 340 | #ifdef HAVE_ASSERT_H |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 341 | /* if FAT bits is 32, dir_len must be zero, otherwise it must be |
| 342 | * non-zero */ |
| 343 | assert(Fs->fat_bits == 32 ? (Fs->dir_len == 0) : (Fs->dir_len != 0)); |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 344 | |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 345 | /* Clusters must fill disk up entirely, except for small amount of |
| 346 | * slack smaller than one sector */ |
| 347 | assert(tot_sectors >= |
| 348 | Fs->clus_start + Fs->num_clus * Fs->cluster_size); |
| 349 | assert(tot_sectors <= |
| 350 | Fs->clus_start + Fs->num_clus * Fs->cluster_size + |
| 351 | Fs->cluster_size - 1); |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 352 | |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 353 | /* Fat must be big enough for all clusters */ |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 354 | assert(clusters_fit_into_fat(Fs)); |
| 355 | #endif |
| 356 | provisional_fat_bits = Fs->fat_bits; |
| 357 | set_fat(Fs); |
| 358 | #ifdef HAVE_ASSERT_H |
| 359 | assert(provisional_fat_bits == Fs->fat_bits); |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 360 | #endif |
| 361 | } |
| 362 | |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 363 | static void fat32_specific_init(Fs_t *Fs) { |
| 364 | Fs->primaryFat = 0; |
| 365 | Fs->writeAllFats = 1; |
| 366 | if(!Fs->backupBoot) { |
| 367 | if(Fs->fat_start <= 6) |
| 368 | Fs->backupBoot = Fs->fat_start - 1; |
| 369 | else |
| 370 | Fs->backupBoot=6; |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 371 | } |
| 372 | |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 373 | if(Fs->fat_start < 3) { |
| 374 | fprintf(stderr, |
| 375 | "For FAT 32, reserved sectors need to be at least 3\n"); |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 376 | exit(1); |
| 377 | } |
| 378 | |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 379 | if(Fs->fat_start <= Fs->backupBoot) { |
| 380 | fprintf(stderr, |
| 381 | "Reserved sectors (%d) must be more than backupBoot (%d)\n", Fs->fat_start, Fs->backupBoot); |
| 382 | Fs->backupBoot = 0; |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 383 | } |
| 384 | } |
| 385 | |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 386 | /* Try given cluster- and fat_size (and other parameters), and say whether |
| 387 | * cluster_size/fat_bits should be increased, decreased, or is fine as is. |
| 388 | * Parameters |
| 389 | * Fs the file system object |
| 390 | * tot_sectors size of file system, in sectors |
| 391 | * may_change_boot_size try_cluster_size may increase number of boot |
| 392 | * (reserved) sectors to make everything fit |
| 393 | * may_change_fat_len try_cluster_size may change (compute) FAT length |
| 394 | * may_change_root_size try_cluster_size may increase root directory size |
| 395 | * to make everything fit |
| 396 | * may_pad if there are (slightly) too many clusters, |
| 397 | * try_cluster_size may artificially inflate number of |
| 398 | * boot sectors, fat length or root_size to take up |
| 399 | * space in order to reduce number clusters below limit |
| 400 | * |
| 401 | * Return values |
| 402 | * -2 Too few sectors to contain even the header (reserved sectors, minimal |
| 403 | * FAT and root directory), or other internal error |
| 404 | * -1 This cluster size leads to too few clusters for the FAT size. |
| 405 | * Caller should either reduce cluster size or FAT size, and try again |
| 406 | * 0 Everything fits |
| 407 | * 1 This cluster size leads to too many clusters for the FAT |
| 408 | * size. Caller should either increase cluster size or FAT size, and |
| 409 | * try again |
| 410 | * 2 Fat length is set, and there are too many clusters to fit into |
| 411 | * that Fat length. Caller should either increase cluster size, or |
| 412 | * decrease FAT size, and try again |
| 413 | * |
| 414 | */ |
| 415 | static int try_cluster_size(Fs_t *Fs, |
| 416 | uint32_t tot_sectors, |
| 417 | bool may_change_boot_size, |
| 418 | bool may_change_fat_len, |
| 419 | bool may_change_root_size, |
| 420 | bool may_pad) |
| 421 | { |
| 422 | uint32_t maxClus; |
| 423 | uint32_t minClus; |
| 424 | |
| 425 | switch(Fs->fat_bits) { |
| 426 | case 12: |
| 427 | minClus = 1; |
| 428 | maxClus = FAT12; |
| 429 | break; |
| 430 | case 16: |
| 431 | minClus = 4096; |
| 432 | maxClus = FAT16; |
| 433 | break; |
| 434 | case 32: |
| 435 | minClus = FAT16; |
| 436 | maxClus = FAT32; |
| 437 | break; |
| 438 | default: |
| 439 | #ifdef HAVE_ASSERT_H |
| 440 | assert(false && "Bad number of FAT bits"); |
| 441 | #endif |
| 442 | return -2; |
| 443 | } |
| 444 | |
| 445 | if(getenv("MTOOLS_DEBUG_FAT")) { |
| 446 | fprintf(stderr, "FAT=%d Cluster=%d%s\n", |
| 447 | Fs->fat_bits, Fs->cluster_size, |
| 448 | may_pad ? " may_pad" : ""); |
| 449 | } |
| 450 | |
| 451 | if(may_change_fat_len) { |
| 452 | int fit=calc_fat_len(Fs, tot_sectors); |
| 453 | if(fit != 0) |
| 454 | return fit; |
| 455 | } |
| 456 | |
| 457 | while(true) { |
| 458 | uint32_t bwaste; /* How many sectors we need to "waste" */ |
| 459 | uint16_t waste; |
| 460 | uint16_t dir_grow=0; |
| 461 | |
| 462 | if(calc_num_clus(Fs, tot_sectors) < 0) |
| 463 | return -2; |
| 464 | if(Fs->num_clus < minClus) |
| 465 | return -1; /* Not enough clusters => loop |
| 466 | * should shrink FAT bits again */ |
| 467 | |
| 468 | if(!may_change_fat_len) { |
| 469 | /* If fat_len has been explicitly specified by |
| 470 | * user, make sure that number of clusters |
| 471 | * fit within that fat_len */ |
| 472 | if(Fs->num_clus >= FAT32 || !clusters_fit_into_fat(Fs)) |
| 473 | return 2; /* Caller should should pick a |
| 474 | * bigger cluster size, but not a |
| 475 | * higher FAT bits */ |
| 476 | } |
| 477 | |
| 478 | if(Fs->num_clus < maxClus) |
| 479 | break; |
| 480 | if(!may_pad) |
| 481 | return 1; |
| 482 | |
| 483 | /* "Pad" fat by artifically adding sectors to boot sectors, |
| 484 | FAT or root directory to diminish number of clusters */ |
| 485 | |
| 486 | /* This is needed when a size of a FAT fs somehow is |
| 487 | * "in between" 2 fat bits: too large for FAT12, too small |
| 488 | * for FAT16. |
| 489 | |
| 490 | * This happens because if there slightly too may |
| 491 | * clusters for FAT12, the system passes to |
| 492 | * FAT16. However, this makes the space taken up by |
| 493 | * the descriptor of each sector in the FAT larger, |
| 494 | * making the FAT larger overall, leaving less space |
| 495 | * for the clusters themselves, i.e. less |
| 496 | * clusters. Sometimes this is enough to push the |
| 497 | * number of clusters *below* the minimum for FAT12. |
| 498 | |
| 499 | * a similar situation happens when switching from |
| 500 | * FAT16 to FAT32. |
| 501 | |
| 502 | * if this happens, we switch back to the lower FAT |
| 503 | * bits, and allow "padding", i.e. artificially |
| 504 | * "wasting" space by adding more reserved (boot) |
| 505 | * sectors, adding "useless" extra sectors to the FAT, |
| 506 | * or allowing more root directory entries. |
| 507 | |
| 508 | */ |
| 509 | bwaste = tot_sectors - Fs->clus_start - |
| 510 | maxClus * Fs->cluster_size + 1; |
| 511 | #ifdef HAVE_ASSERT_H |
| 512 | assert(bwaste <= UINT16_MAX); |
| 513 | #endif |
| 514 | waste = (uint16_t) bwaste; |
| 515 | |
| 516 | if(may_change_root_size) { |
| 517 | dir_grow = 32 - Fs->dir_len; |
| 518 | if(dir_grow > waste) |
| 519 | dir_grow = waste; |
| 520 | waste -= dir_grow; |
| 521 | } |
| 522 | if(may_change_fat_len && |
| 523 | (!may_change_boot_size || Fs->fat_bits == 12)) { |
| 524 | uint16_t fat_grow = |
| 525 | (waste + Fs->num_fat - 1) / Fs->num_fat; |
| 526 | uint16_t dir_shrink = 0; |
| 527 | Fs->fat_len += fat_grow; |
| 528 | |
| 529 | /* Shrink directory again, but at most as by as much |
| 530 | * as we grew it earlyer */ |
| 531 | dir_shrink = waste - fat_grow * Fs->num_fat; |
| 532 | if(dir_shrink > dir_grow) |
| 533 | dir_shrink = dir_grow; |
| 534 | dir_grow -= dir_shrink; |
| 535 | } else if(may_change_boot_size) { |
| 536 | Fs->fat_start += waste; |
| 537 | } |
| 538 | Fs->dir_len += dir_grow; |
| 539 | |
| 540 | /* If padding once failed, no point in keeping on retrying */ |
| 541 | may_pad=false; |
| 542 | } |
| 543 | #ifdef HAVE_ASSERT_H |
| 544 | /* number of clusters must be within allowable range for fat |
| 545 | bits */ |
| 546 | assert(Fs->num_clus >= minClus); |
| 547 | assert(Fs->num_clus < maxClus); |
| 548 | #endif |
| 549 | return 0; |
| 550 | } |
| 551 | |
| 552 | /* Finds a set of filesystem parameters, given the device size, and |
| 553 | * any presets specified by user |
| 554 | * On return, Fs will be initialized, or one of the following error codes |
| 555 | * will be returned: |
| 556 | * -1 Not enough sectors for any kind of FAT filesystem |
| 557 | * -2 Not enough clusters for given number of FAT bits |
| 558 | * -3 Too many clusters for given number of FAT bits |
| 559 | * -4 Too many clusters for chosen FAT length |
| 560 | */ |
| 561 | int calc_fs_parameters(struct device *dev, bool fat32, |
| 562 | uint32_t tot_sectors, |
| 563 | struct Fs_t *Fs, uint8_t *descr) |
| 564 | { |
| 565 | bool may_change_boot_size = (Fs->fat_start == 0); |
| 566 | bool may_change_fat_bits = (dev->fat_bits == 0) && !fat32; |
| 567 | bool may_change_cluster_size = (Fs->cluster_size == 0); |
| 568 | bool may_change_root_size = (Fs->dir_len == 0); |
| 569 | bool may_change_fat_len = (Fs->fat_len == 0); |
| 570 | bool may_pad = false; |
| 571 | uint16_t saved_dir_len; |
| 572 | |
| 573 | struct OldDos_t *params=NULL; |
| 574 | Fs->infoSectorLoc = 0; |
| 575 | if( (may_change_fat_bits || abs(dev->fat_bits) == 12) && |
| 576 | (may_change_boot_size || Fs->fat_start == 1) ) |
| 577 | params = getOldDosByParams(dev->tracks,dev->heads,dev->sectors, |
| 578 | Fs->dir_len, Fs->cluster_size); |
| 579 | if(params != NULL) { |
| 580 | int num_clus_valid; |
| 581 | *descr = params->media; |
| 582 | Fs->fat_start = 1; |
| 583 | Fs->cluster_size = params->cluster_size; |
| 584 | Fs->dir_len = params->dir_len; |
| 585 | Fs->fat_len = params->fat_len; |
| 586 | Fs->fat_bits = 12; |
| 587 | num_clus_valid = calc_num_clus(Fs, tot_sectors); |
| 588 | #ifdef HAVE_ASSERT_H |
| 589 | assert(num_clus_valid >= 0); |
| 590 | #endif |
| 591 | check_fs_params_and_set_fat(Fs, tot_sectors); |
| 592 | return 0; |
| 593 | } |
| 594 | |
| 595 | /* a format described by BPB */ |
| 596 | if(dev->hidden || tot_sectors % (dev->sectors * dev->heads)) |
| 597 | *descr = 0xf8; |
| 598 | else |
| 599 | *descr = 0xf0; |
| 600 | |
| 601 | Fs->fat_bits = abs(dev->fat_bits); |
| 602 | if(Fs->fat_bits == 0) |
| 603 | /* If fat_bits not specified by device, start with a 12-bit |
| 604 | * FAT, unless 32 bit specified on command line */ |
| 605 | Fs->fat_bits = fat32 ? 32 : 12; |
| 606 | if(!Fs->cluster_size) { |
| 607 | if(tot_sectors < 2400 && dev->heads == 2) |
| 608 | /* double sided double density floppies */ |
| 609 | Fs->cluster_size = 2; |
| 610 | else if(may_change_fat_len && Fs->fat_bits == 32) |
| 611 | /* FAT32 => start with 8 */ |
| 612 | Fs->cluster_size = 8; |
| 613 | else |
| 614 | /* In all other cases, start with 1 */ |
| 615 | Fs->cluster_size = 1; |
| 616 | } |
| 617 | |
| 618 | if(!Fs->dir_len) { |
| 619 | if(tot_sectors < 1200) { |
| 620 | /* Double density floppies */ |
| 621 | if (dev->heads == 1) |
| 622 | Fs->dir_len = 4; |
| 623 | else |
| 624 | Fs->dir_len = 7; |
| 625 | } else if(tot_sectors <= 3840) |
| 626 | /* High density floppies */ |
| 627 | Fs->dir_len = 14; |
| 628 | else if(tot_sectors <= 7680) |
| 629 | /* extra density floppies */ |
| 630 | Fs->dir_len = 15; |
| 631 | else |
| 632 | Fs->dir_len = 32; |
| 633 | } |
| 634 | saved_dir_len = Fs->dir_len; |
| 635 | |
| 636 | while(true) { |
| 637 | int fit; |
| 638 | if(may_change_boot_size) { |
| 639 | if(Fs->fat_bits == 32) |
| 640 | Fs->fat_start = 32; |
| 641 | else |
| 642 | Fs->fat_start = 1; |
| 643 | } |
| 644 | |
| 645 | if(Fs->fat_bits == 32) |
| 646 | Fs->dir_len = 0; |
| 647 | else if(Fs->dir_len == 0) |
| 648 | Fs->dir_len = saved_dir_len; |
| 649 | |
| 650 | if(Fs->fat_bits == 32 && |
| 651 | may_change_cluster_size && may_change_fat_len) { |
| 652 | /* |
| 653 | FAT32 cluster sizes for disks with 512 block size |
| 654 | according to Microsoft specification fatgen103.doc: |
| 655 | |
| 656 | ... |
| 657 | - 8 GB cluster_size = 8 |
| 658 | 8 GB - 16 GB cluster_size = 16 |
| 659 | 16 GB - 32 GB cluster_size = 32 |
| 660 | 32 GB - 2 TB cluster_size = 64 |
| 661 | |
| 662 | Below calculation is generalized and does not depend |
| 663 | on 512 block size. |
| 664 | */ |
| 665 | Fs->cluster_size = tot_sectors >= 32*1024*1024*2 ? 64 : |
| 666 | tot_sectors >= 16*1024*1024*2 ? 32 : |
| 667 | tot_sectors >= 8*1024*1024*2 ? 16 : |
| 668 | Fs->cluster_size; |
| 669 | } |
| 670 | |
| 671 | fit=try_cluster_size(Fs, |
| 672 | tot_sectors, |
| 673 | may_change_boot_size, |
| 674 | may_change_fat_len, |
| 675 | may_change_root_size, |
| 676 | may_pad); |
| 677 | |
| 678 | if(getenv("MTOOLS_DEBUG_FAT")) { |
| 679 | fprintf(stderr, " fit=%d\n", fit); |
| 680 | } |
| 681 | if(fit == 0) |
| 682 | break; |
| 683 | if(fit == -2) |
| 684 | return -1; |
| 685 | |
| 686 | #ifdef HAVE_ASSERT_H |
| 687 | assert(fit != 2 || !may_change_fat_len); |
| 688 | #endif |
| 689 | if(fit < 0) { |
| 690 | if(may_change_cluster_size && |
| 691 | may_change_fat_len && |
| 692 | Fs->cluster_size > 1) { |
| 693 | Fs->cluster_size = Fs->cluster_size / 2; |
| 694 | continue; |
| 695 | } |
| 696 | |
| 697 | /* Somehow we ended up with too few sectors |
| 698 | * for FAT size. This can only happen if |
| 699 | * cluster size is not adjustable, and if we |
| 700 | * had *barely* more clusters than allowed by |
| 701 | * previous fat bits. After raising fat bits, |
| 702 | * fat_len grew larger (due to each individual |
| 703 | * FAT entry now being larger), pushing the |
| 704 | * number of clusters *below* new limit. => |
| 705 | * we lower fat bits again */ |
| 706 | if(!may_change_fat_bits || Fs->fat_bits == 12) |
| 707 | return -2; |
| 708 | |
| 709 | switch(Fs->fat_bits) { |
| 710 | case 16: |
| 711 | Fs->fat_bits=12; |
| 712 | break; |
| 713 | case 32: |
| 714 | Fs->fat_bits=16; |
| 715 | break; |
| 716 | } |
| 717 | may_pad=true; |
| 718 | continue; |
| 719 | } |
| 720 | |
| 721 | if(fit == 1 && may_change_fat_bits && !may_pad) { |
| 722 | /* If cluster_size reached |
| 723 | * "maximum" for fat_bits, |
| 724 | * switch over to next |
| 725 | */ |
| 726 | if(Fs->fat_bits == 12 && |
| 727 | (!may_change_cluster_size || |
| 728 | Fs->cluster_size >= 8)) { |
| 729 | Fs->fat_bits = 16; |
| 730 | if(may_change_cluster_size) |
| 731 | Fs->cluster_size = 1; |
| 732 | continue; |
| 733 | } |
| 734 | |
| 735 | if(Fs->fat_bits == 16 && |
| 736 | (!may_change_cluster_size || |
| 737 | Fs->cluster_size >= 64)) { |
| 738 | Fs->fat_bits = 32; |
| 739 | if(may_change_cluster_size) |
| 740 | Fs->cluster_size = |
| 741 | may_change_fat_len ? 8 : 1; |
| 742 | continue; |
| 743 | } |
| 744 | } |
| 745 | |
| 746 | if(may_change_cluster_size && Fs->cluster_size < 128) { |
| 747 | /* Double cluster size, and try again */ |
| 748 | Fs->cluster_size = 2 * Fs->cluster_size; |
| 749 | continue; |
| 750 | } |
| 751 | |
| 752 | if(fit == 2 && may_change_fat_bits && |
| 753 | may_change_root_size && |
| 754 | Fs->fat_bits == 16) { |
| 755 | Fs->fat_bits=12; |
| 756 | may_pad=true; |
| 757 | continue; |
| 758 | } |
| 759 | |
| 760 | /* Still too many clusters? */ |
| 761 | return (fit == 2) ? -4 : -3; |
| 762 | } |
| 763 | |
| 764 | if(getenv("MTOOLS_DEBUG_FAT") || getenv("MTOOLS_DEBUG_FAT_SUMMARY")) { |
| 765 | fprintf(stderr, |
| 766 | " FAT%d Cluster_size=%d %d clusters FAT_LEN=%d\n", |
| 767 | Fs->fat_bits, |
| 768 | Fs->cluster_size, |
| 769 | Fs->num_clus, |
| 770 | Fs->fat_len); |
| 771 | } |
| 772 | check_fs_params_and_set_fat(Fs, tot_sectors); |
| 773 | if(Fs->fat_bits == 32) |
| 774 | fat32_specific_init(Fs); |
| 775 | return 0; |
| 776 | } |
| 777 | |
| 778 | void initFsForFormat(Fs_t *Fs) |
| 779 | { |
| 780 | memset(Fs, 0, sizeof(*Fs)); |
| 781 | init_head(&Fs->head, &FsClass, NULL); |
| 782 | |
| 783 | Fs->cluster_size = 0; |
| 784 | Fs->dir_len = 0; |
| 785 | Fs->fat_len = 0; |
| 786 | Fs->num_fat = 2; |
| 787 | Fs->backupBoot = 0; |
| 788 | } |
| 789 | |
| 790 | void setFsSectorSize(Fs_t *Fs, struct device *dev, uint16_t msize) { |
| 791 | unsigned int j; |
| 792 | Fs->sector_size = 512; |
| 793 | if( !(dev->use_2m & 0x7f)) { |
| 794 | Fs->sector_size = (uint16_t) (128u << (dev->ssize & 0x7f)); |
| 795 | } |
| 796 | |
| 797 | SET_INT(Fs->sector_size, msize); |
| 798 | for(j = 0; j < 31; j++) { |
| 799 | if (Fs->sector_size == (unsigned int) (1 << j)) { |
| 800 | Fs->sectorShift = j; |
| 801 | break; |
| 802 | } |
| 803 | } |
| 804 | Fs->sectorMask = Fs->sector_size - 1; |
| 805 | } |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 806 | |
| 807 | static int old_dos_size_to_geom(size_t size, |
| 808 | unsigned int *cyls, |
| 809 | unsigned short *heads, |
| 810 | unsigned short *sects) |
| 811 | { |
| 812 | struct OldDos_t *params = getOldDosBySize(size); |
| 813 | if(params != NULL) { |
| 814 | *cyls = params->tracks; |
| 815 | *heads = params->heads; |
| 816 | *sects = params->sectors; |
| 817 | return 0; |
| 818 | } else |
| 819 | return 1; |
| 820 | } |
| 821 | |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 822 | static void usage(int ret) NORETURN; |
| 823 | static void usage(int ret) |
| 824 | { |
| 825 | fprintf(stderr, |
| 826 | "Mtools version %s, dated %s\n", mversion, mdate); |
| 827 | fprintf(stderr, |
| 828 | "Usage: %s [-V] [-t tracks] [-h heads] [-n sectors] " |
| 829 | "[-v label] [-1] [-4] [-8] [-f size] " |
| 830 | "[-N serialnumber] " |
| 831 | "[-k] [-B bootsector] [-r root_dir_len] [-L fat_len] " |
| 832 | "[-F] [-I fsVersion] [-C] [-c cluster_size] " |
| 833 | "[-H hidden_sectors] " |
| 834 | #ifdef USE_XDF |
| 835 | "[-X] " |
| 836 | #endif |
| 837 | "[-S hardsectorsize] [-M softsectorsize] [-3] " |
| 838 | "[-2 track0sectors] [-0 rate0] [-A rateany] [-a]" |
| 839 | "device\n", progname); |
| 840 | exit(ret); |
| 841 | } |
| 842 | |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 843 | void mformat(int argc, char **argv, int dummy UNUSEDP) NORETURN; |
| 844 | void mformat(int argc, char **argv, int dummy UNUSEDP) |
| 845 | { |
| 846 | int r; /* generic return value */ |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 847 | Fs_t *Fs; |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 848 | unsigned int hs; |
| 849 | int hs_set; |
| 850 | unsigned int arguse_2m = 0; |
| 851 | uint8_t sectors0=18; /* number of sectors on track 0 */ |
| 852 | int create = 0; |
| 853 | uint8_t rate_0, rate_any; |
| 854 | int mangled; |
| 855 | uint8_t argssize=0; /* sector size */ |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 856 | uint16_t msize=0; |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 857 | int fat32 = 0; |
| 858 | struct label_blk_t *labelBlock; |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 859 | size_t bootOffset; |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 860 | |
| 861 | #ifdef USE_XDF |
| 862 | unsigned int i; |
| 863 | int format_xdf = 0; |
| 864 | struct xdf_info info; |
| 865 | #endif |
| 866 | union bootsector boot; |
| 867 | char *bootSector=0; |
| 868 | int c; |
| 869 | int keepBoot = 0; |
| 870 | struct device used_dev; |
| 871 | unsigned int argtracks; |
| 872 | uint16_t argheads, argsectors; |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 873 | uint32_t tot_sectors=0; |
| 874 | uint32_t blocksize; |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 875 | |
| 876 | char drive, name[EXPAND_BUF]; |
| 877 | |
| 878 | char label[VBUFSIZE]; |
| 879 | |
| 880 | dos_name_t shortlabel; |
| 881 | struct device *dev; |
| 882 | char errmsg[2100]; |
| 883 | |
| 884 | uint32_t serial; |
| 885 | int serial_set; |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 886 | uint16_t fsVersion; |
| 887 | uint8_t mediaDesc=0; |
| 888 | bool haveMediaDesc=false; |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 889 | |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 890 | mt_off_t maxSize; |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 891 | |
| 892 | int Atari = 0; /* should we add an Atari-style serial number ? */ |
| 893 | |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 894 | char *endptr; |
| 895 | |
| 896 | hs = hs_set = 0; |
| 897 | argtracks = 0; |
| 898 | argheads = 0; |
| 899 | argsectors = 0; |
| 900 | arguse_2m = 0; |
| 901 | argssize = 0x2; |
| 902 | label[0] = '\0'; |
| 903 | serial_set = 0; |
| 904 | serial = 0; |
| 905 | fsVersion = 0; |
| 906 | |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 907 | Fs = New(Fs_t); |
| 908 | if (!Fs) { |
| 909 | fprintf(stderr, "Out of memory\n"); |
| 910 | exit(1); |
| 911 | } |
| 912 | initFsForFormat(Fs); |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 913 | if(getenv("MTOOLS_DIR_LEN")) { |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 914 | Fs->dir_len = atou16(getenv("MTOOLS_DIR_LEN")); |
| 915 | if(Fs->dir_len <= 0) |
| 916 | Fs->dir_len=0; |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 917 | } |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 918 | if(getenv("MTOOLS_NFATS")) { |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 919 | Fs->num_fat = atou8(getenv("MTOOLS_NFATS")); |
| 920 | if(Fs->num_fat <= 0) |
| 921 | Fs->num_fat=2; |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 922 | } |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 923 | rate_0 = mtools_rate_0; |
| 924 | rate_any = mtools_rate_any; |
| 925 | |
| 926 | /* get command line options */ |
| 927 | if(helpFlag(argc, argv)) |
| 928 | usage(0); |
| 929 | while ((c = getopt(argc,argv, |
| 930 | "i:148f:t:n:v:qub" |
| 931 | "kK:R:B:r:L:I:FCc:Xh:s:T:l:N:H:M:S:2:30:Aad:m:"))!= EOF) { |
| 932 | errno = 0; |
| 933 | endptr = NULL; |
| 934 | switch (c) { |
| 935 | case 'i': |
| 936 | set_cmd_line_image(optarg); |
| 937 | break; |
| 938 | |
| 939 | /* standard DOS flags */ |
| 940 | case '1': |
| 941 | argheads = 1; |
| 942 | break; |
| 943 | case '4': |
| 944 | argsectors = 9; |
| 945 | argtracks = 40; |
| 946 | break; |
| 947 | case '8': |
| 948 | argsectors = 8; |
| 949 | argtracks = 40; |
| 950 | break; |
| 951 | case 'f': |
| 952 | r=old_dos_size_to_geom(atoul(optarg), |
| 953 | &argtracks, &argheads, |
| 954 | &argsectors); |
| 955 | if(r) { |
| 956 | fprintf(stderr, |
| 957 | "Bad size %s\n", optarg); |
| 958 | exit(1); |
| 959 | } |
| 960 | break; |
| 961 | case 't': |
| 962 | argtracks = atou16(optarg); |
| 963 | break; |
| 964 | |
| 965 | case 'T': |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 966 | tot_sectors = parseSize(optarg); |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 967 | break; |
| 968 | |
| 969 | case 'n': /*non-standard*/ |
| 970 | case 's': |
| 971 | argsectors = atou16(optarg); |
| 972 | break; |
| 973 | |
| 974 | case 'l': /* non-standard */ |
| 975 | case 'v': |
| 976 | strncpy(label, optarg, VBUFSIZE-1); |
| 977 | label[VBUFSIZE-1] = '\0'; |
| 978 | break; |
| 979 | |
| 980 | /* flags supported by Dos but not mtools */ |
| 981 | case 'q': |
| 982 | case 'u': |
| 983 | case 'b': |
| 984 | /*case 's': leave this for compatibility */ |
| 985 | fprintf(stderr, |
| 986 | "Flag %c not supported by mtools\n",c); |
| 987 | exit(1); |
| 988 | |
| 989 | |
| 990 | |
| 991 | /* flags added by mtools */ |
| 992 | case 'F': |
| 993 | fat32 = 1; |
| 994 | break; |
| 995 | |
| 996 | |
| 997 | case 'S': |
| 998 | argssize = atou8(optarg) | 0x80; |
| 999 | if(argssize < 0x80) |
| 1000 | usage(1); |
| 1001 | if(argssize >= 0x87) { |
| 1002 | fprintf(stderr, "argssize must be less than 6\n"); |
| 1003 | usage(1); |
| 1004 | } |
| 1005 | break; |
| 1006 | |
| 1007 | #ifdef USE_XDF |
| 1008 | case 'X': |
| 1009 | format_xdf = 1; |
| 1010 | break; |
| 1011 | #endif |
| 1012 | |
| 1013 | case '2': |
| 1014 | arguse_2m = 0xff; |
| 1015 | sectors0 = atou8(optarg); |
| 1016 | break; |
| 1017 | case '3': |
| 1018 | arguse_2m = 0x80; |
| 1019 | break; |
| 1020 | |
| 1021 | case '0': /* rate on track 0 */ |
| 1022 | rate_0 = atou8(optarg); |
| 1023 | break; |
| 1024 | case 'A': /* rate on other tracks */ |
| 1025 | rate_any = atou8(optarg); |
| 1026 | break; |
| 1027 | |
| 1028 | case 'M': |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1029 | msize = atou16(optarg); |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1030 | if(msize != 512 && |
| 1031 | msize != 1024 && |
| 1032 | msize != 2048 && |
| 1033 | msize != 4096) { |
| 1034 | fprintf(stderr, "Only sector sizes of 512, 1024, 2048 or 4096 bytes are allowed\n"); |
| 1035 | usage(1); |
| 1036 | } |
| 1037 | break; |
| 1038 | |
| 1039 | case 'N': |
| 1040 | serial = strtou32(optarg,&endptr,16); |
| 1041 | serial_set = 1; |
| 1042 | break; |
| 1043 | case 'a': /* Atari style serial number */ |
| 1044 | Atari = 1; |
| 1045 | break; |
| 1046 | |
| 1047 | case 'C': |
| 1048 | create = O_CREAT | O_TRUNC; |
| 1049 | break; |
| 1050 | |
| 1051 | case 'H': |
| 1052 | hs = atoui(optarg); |
| 1053 | hs_set = 1; |
| 1054 | break; |
| 1055 | |
| 1056 | case 'I': |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1057 | fsVersion = strtou16(optarg,&endptr,0); |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1058 | break; |
| 1059 | |
| 1060 | case 'c': |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1061 | Fs->cluster_size = atou8(optarg); |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1062 | break; |
| 1063 | |
| 1064 | case 'r': |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1065 | Fs->dir_len = strtou16(optarg,&endptr,0); |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1066 | break; |
| 1067 | case 'L': |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1068 | Fs->fat_len = strtoui(optarg,&endptr,0); |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1069 | break; |
| 1070 | |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1071 | case 'B': |
| 1072 | bootSector = optarg; |
| 1073 | break; |
| 1074 | case 'k': |
| 1075 | keepBoot = 1; |
| 1076 | break; |
| 1077 | case 'K': |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1078 | Fs->backupBoot = atou16(optarg); |
| 1079 | if(Fs->backupBoot < 2) { |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1080 | fprintf(stderr, "Backupboot must be greater than 2\n"); |
| 1081 | exit(1); |
| 1082 | } |
| 1083 | break; |
| 1084 | case 'R': |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1085 | Fs->fat_start = atou8(optarg); |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1086 | break; |
| 1087 | case 'h': |
| 1088 | argheads = atou16(optarg); |
| 1089 | break; |
| 1090 | case 'd': |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1091 | Fs->num_fat = atou8(optarg); |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1092 | break; |
| 1093 | case 'm': |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1094 | mediaDesc = strtou8(optarg,&endptr,0); |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1095 | if(*endptr) |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1096 | mediaDesc = strtou8(optarg,&endptr,16); |
| 1097 | if(optarg == endptr || *endptr) { |
| 1098 | fprintf(stderr, "Bad mediadesc %s\n", optarg); |
| 1099 | exit(1); |
| 1100 | } |
| 1101 | haveMediaDesc=true; |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1102 | break; |
| 1103 | default: |
| 1104 | usage(1); |
| 1105 | } |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1106 | check_number_parse_errno((char)c, optarg, endptr); |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1107 | } |
| 1108 | |
| 1109 | if (argc - optind > 1) |
| 1110 | usage(1); |
| 1111 | if(argc - optind == 1) { |
| 1112 | if(!argv[optind][0] || argv[optind][1] != ':') |
| 1113 | usage(1); |
| 1114 | drive = ch_toupper(argv[argc -1][0]); |
| 1115 | } else { |
| 1116 | drive = get_default_drive(); |
| 1117 | if(drive != ':') { |
| 1118 | /* Use default drive only if it is ":" (image file), as else |
| 1119 | it would be too dangerous... */ |
| 1120 | fprintf(stderr, "Drive letter missing\n"); |
| 1121 | exit(1); |
| 1122 | } |
| 1123 | } |
| 1124 | |
| 1125 | if(argtracks && tot_sectors) { |
| 1126 | fprintf(stderr, "Only one of -t or -T may be specified\n"); |
| 1127 | usage(1); |
| 1128 | } |
| 1129 | |
| 1130 | #ifdef USE_XDF |
| 1131 | if(create && format_xdf) { |
| 1132 | fprintf(stderr,"Create and XDF can't be used together\n"); |
| 1133 | exit(1); |
| 1134 | } |
| 1135 | #endif |
| 1136 | |
| 1137 | /* check out a drive whose letter and parameters match */ |
| 1138 | sprintf(errmsg, "Drive '%c:' not supported", drive); |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1139 | blocksize = 0; |
| 1140 | for(dev=devices;dev->drive;dev++) { |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1141 | FREE(&(Fs->head.Next)); |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1142 | /* drive letter */ |
| 1143 | if (dev->drive != drive) |
| 1144 | continue; |
| 1145 | used_dev = *dev; |
| 1146 | |
| 1147 | SET_INT(used_dev.tracks, argtracks); |
| 1148 | SET_INT(used_dev.heads, argheads); |
| 1149 | SET_INT(used_dev.sectors, argsectors); |
| 1150 | SET_INT(used_dev.use_2m, arguse_2m); |
| 1151 | SET_INT(used_dev.ssize, argssize); |
| 1152 | if(hs_set) |
| 1153 | used_dev.hidden = hs; |
| 1154 | |
| 1155 | expand(dev->name, name); |
| 1156 | #ifdef USING_NEW_VOLD |
| 1157 | strcpy(name, getVoldName(dev, name)); |
| 1158 | #endif |
| 1159 | |
| 1160 | #ifdef USE_XDF |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1161 | if(format_xdf) |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1162 | used_dev.misc_flags |= USE_XDF_FLAG; |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1163 | info.FatSize=0; |
| 1164 | #endif |
| 1165 | if(tot_sectors) |
| 1166 | used_dev.tot_sectors = tot_sectors; |
| 1167 | Fs->head.Next = OpenImage(&used_dev, dev, name, |
| 1168 | O_RDWR|create, errmsg, |
| 1169 | ALWAYS_GET_GEOMETRY, |
| 1170 | O_RDWR, |
| 1171 | &maxSize, NULL, |
| 1172 | #ifdef USE_XDF |
| 1173 | &info |
| 1174 | #else |
| 1175 | NULL |
| 1176 | #endif |
| 1177 | ); |
| 1178 | |
| 1179 | #ifdef USE_XDF |
| 1180 | if(Fs->head.Next && info.FatSize) { |
| 1181 | if(!Fs->fat_len) |
| 1182 | Fs->fat_len = info.FatSize; |
| 1183 | if(!Fs->dir_len) |
| 1184 | Fs->dir_len = info.RootDirSize; |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1185 | } |
| 1186 | #endif |
| 1187 | |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1188 | if (!Fs->head.Next) |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1189 | continue; |
| 1190 | |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1191 | if(tot_sectors) |
| 1192 | used_dev.tot_sectors = tot_sectors; |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1193 | |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1194 | setFsSectorSize(Fs, &used_dev, msize); |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1195 | |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1196 | if(!used_dev.blocksize || used_dev.blocksize < Fs->sector_size) |
| 1197 | blocksize = Fs->sector_size; |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1198 | else |
| 1199 | blocksize = used_dev.blocksize; |
| 1200 | |
| 1201 | if(blocksize > MAX_SECTOR) |
| 1202 | blocksize = MAX_SECTOR; |
| 1203 | |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1204 | if(chs_to_totsectors(&used_dev, errmsg) < 0 || |
| 1205 | check_if_sectors_fit(dev->tot_sectors, maxSize, blocksize, |
| 1206 | errmsg) < 0) { |
| 1207 | FREE(&Fs->head.Next); |
| 1208 | continue; |
| 1209 | } |
| 1210 | |
| 1211 | if(!tot_sectors) |
| 1212 | tot_sectors = used_dev.tot_sectors; |
| 1213 | |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1214 | /* do a "test" read */ |
| 1215 | if (!create && |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1216 | PREADS(Fs->head.Next, |
| 1217 | &boot.characters, 0, Fs->sector_size) != |
| 1218 | (signed int) Fs->sector_size) { |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1219 | #ifdef HAVE_SNPRINTF |
| 1220 | snprintf(errmsg, sizeof(errmsg)-1, |
| 1221 | "Error reading from '%s', wrong parameters?", |
| 1222 | name); |
| 1223 | #else |
| 1224 | sprintf(errmsg, |
| 1225 | "Error reading from '%s', wrong parameters?", |
| 1226 | name); |
| 1227 | #endif |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1228 | FREE(&Fs->head.Next); |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1229 | continue; |
| 1230 | } |
| 1231 | break; |
| 1232 | } |
| 1233 | |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1234 | /* print error msg if needed */ |
| 1235 | if ( dev->drive == 0 ){ |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1236 | FREE(&Fs->head.Next); |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1237 | fprintf(stderr,"%s: %s\n", argv[0],errmsg); |
| 1238 | exit(1); |
| 1239 | } |
| 1240 | |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1241 | if(tot_sectors == 0) { |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1242 | fprintf(stderr, "Number of sectors not known\n"); |
| 1243 | exit(1); |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1244 | } |
| 1245 | |
| 1246 | /* create the image file if needed */ |
| 1247 | if (create) { |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1248 | PWRITES(Fs->head.Next, &boot.characters, |
| 1249 | sectorsToBytes(Fs, tot_sectors-1), |
| 1250 | Fs->sector_size); |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1251 | } |
| 1252 | |
| 1253 | /* the boot sector */ |
| 1254 | if(bootSector) { |
| 1255 | int fd; |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1256 | ssize_t ret; |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1257 | |
| 1258 | fd = open(bootSector, O_RDONLY | O_BINARY | O_LARGEFILE); |
| 1259 | if(fd < 0) { |
| 1260 | perror("open boot sector"); |
| 1261 | exit(1); |
| 1262 | } |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1263 | ret=read(fd, &boot.bytes, blocksize); |
| 1264 | if(ret < 0 || (size_t) ret < blocksize) { |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1265 | perror("short read on boot sector"); |
| 1266 | exit(1); |
| 1267 | } |
| 1268 | keepBoot = 1; |
| 1269 | close(fd); |
| 1270 | } |
| 1271 | if(!keepBoot && !(used_dev.use_2m & 0x7f)) |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1272 | memset(boot.characters, '\0', Fs->sector_size); |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1273 | |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1274 | Fs->head.Next = buf_init(Fs->head.Next, |
| 1275 | blocksize * used_dev.heads * used_dev.sectors, |
| 1276 | blocksize * used_dev.heads * used_dev.sectors, |
| 1277 | blocksize); |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1278 | |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1279 | boot.boot.nfat = Fs->num_fat; |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1280 | if(!keepBoot) |
| 1281 | set_word(&boot.bytes[510], 0xaa55); |
| 1282 | |
| 1283 | /* Initialize the remaining parameters */ |
| 1284 | set_word(boot.boot.nsect, used_dev.sectors); |
| 1285 | set_word(boot.boot.nheads, used_dev.heads); |
| 1286 | |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1287 | switch(calc_fs_parameters(&used_dev, fat32, tot_sectors, Fs, |
| 1288 | &boot.boot.descr)) { |
| 1289 | case -1: |
| 1290 | fprintf(stderr, "Too few sectors\n"); |
| 1291 | exit(1); |
| 1292 | case -2: |
| 1293 | fprintf(stderr, "Too few clusters for %d bit fat\n", |
| 1294 | Fs->fat_bits); |
| 1295 | exit(1); |
| 1296 | case -3: |
| 1297 | fprintf(stderr, "Too many clusters for %d bit FAT\n", |
| 1298 | Fs->fat_bits); |
| 1299 | exit(1); |
| 1300 | case -4: |
| 1301 | fprintf(stderr, "Too many clusters for fat length %d\n", |
| 1302 | Fs->fat_len); |
| 1303 | exit(1); |
| 1304 | } |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1305 | |
| 1306 | if(!keepBoot && !(used_dev.use_2m & 0x7f)) { |
| 1307 | if(!used_dev.partition) { |
| 1308 | /* install fake partition table pointing to itself */ |
| 1309 | struct partition *partTable=(struct partition *) |
| 1310 | (&boot.bytes[0x1ae]); |
| 1311 | setBeginEnd(&partTable[1], 0, |
| 1312 | used_dev.heads * used_dev.sectors * |
| 1313 | used_dev.tracks, |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1314 | (uint8_t) used_dev.heads, |
| 1315 | (uint8_t) used_dev.sectors, 1, 0, |
| 1316 | Fs->fat_bits); |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1317 | } |
| 1318 | } |
| 1319 | |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1320 | if(Fs->fat_bits == 32) { |
| 1321 | set_word(boot.boot.fatlen, 0); |
| 1322 | set_dword(boot.boot.ext.fat32.bigFat, Fs->fat_len); |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1323 | |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1324 | Fs->clus_start = Fs->num_fat * Fs->fat_len + Fs->fat_start; |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1325 | |
| 1326 | /* extension flags: mirror fats, and use #0 as primary */ |
| 1327 | set_word(boot.boot.ext.fat32.extFlags,0); |
| 1328 | |
| 1329 | /* fs version. What should go here? */ |
| 1330 | set_word(boot.boot.ext.fat32.fsVersion,fsVersion); |
| 1331 | |
| 1332 | /* root directory */ |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1333 | set_dword(boot.boot.ext.fat32.rootCluster, Fs->rootCluster = 2); |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1334 | |
| 1335 | /* info sector */ |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1336 | set_word(boot.boot.ext.fat32.infoSector, Fs->infoSectorLoc = 1); |
| 1337 | Fs->infoSectorLoc = 1; |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1338 | |
| 1339 | /* no backup boot sector */ |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1340 | set_word(boot.boot.ext.fat32.backupBoot, Fs->backupBoot); |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1341 | |
| 1342 | labelBlock = & boot.boot.ext.fat32.labelBlock; |
| 1343 | } else { |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1344 | set_word(boot.boot.fatlen, (uint16_t) Fs->fat_len); |
| 1345 | Fs->dir_start = Fs->num_fat * Fs->fat_len + Fs->fat_start; |
| 1346 | Fs->clus_start = Fs->dir_start + Fs->dir_len; |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1347 | labelBlock = & boot.boot.ext.old.labelBlock; |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1348 | } |
| 1349 | |
| 1350 | /* Set the codepage */ |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1351 | Fs->cp = cp_open(used_dev.codepage); |
| 1352 | if(Fs->cp == NULL) |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1353 | exit(1); |
| 1354 | |
| 1355 | if (!keepBoot) |
| 1356 | /* only zero out physdrive if we don't have a template |
| 1357 | * bootsector */ |
| 1358 | labelBlock->physdrive = 0x00; |
| 1359 | labelBlock->reserved = 0; |
| 1360 | labelBlock->dos4 = 0x29; |
| 1361 | |
| 1362 | if (!serial_set || Atari) |
| 1363 | init_random(); |
| 1364 | if (!serial_set) |
| 1365 | serial=(uint32_t) random(); |
| 1366 | set_dword(labelBlock->serial, serial); |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1367 | label_name_pc(GET_DOSCONVERT((Stream_t *)Fs), |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1368 | label[0] ? label : "NO NAME ", 0, |
| 1369 | &mangled, &shortlabel); |
| 1370 | strncpy(labelBlock->label, shortlabel.base, 8); |
| 1371 | strncpy(labelBlock->label+8, shortlabel.ext, 3); |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1372 | sprintf(labelBlock->fat_type, "FAT%2.2d ", Fs->fat_bits); |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1373 | labelBlock->fat_type[7] = ' '; |
| 1374 | |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1375 | set_word(boot.boot.secsiz, Fs->sector_size); |
| 1376 | boot.boot.clsiz = (unsigned char) Fs->cluster_size; |
| 1377 | set_word(boot.boot.nrsvsect, Fs->fat_start); |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1378 | |
| 1379 | bootOffset = init_geometry_boot(&boot, &used_dev, sectors0, |
| 1380 | rate_0, rate_any, |
| 1381 | &tot_sectors, keepBoot); |
| 1382 | if(!bootOffset) { |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1383 | bootOffset = ptrdiff((char *) labelBlock, (char*)boot.bytes) + |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1384 | sizeof(struct label_blk_t); |
| 1385 | } |
| 1386 | if(Atari) { |
| 1387 | boot.boot.banner[4] = 0; |
| 1388 | boot.boot.banner[5] = (char) random(); |
| 1389 | boot.boot.banner[6] = (char) random(); |
| 1390 | boot.boot.banner[7] = (char) random(); |
| 1391 | } |
| 1392 | |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1393 | if(!keepBoot && bootOffset <= UINT16_MAX) |
| 1394 | inst_boot_prg(&boot, (uint16_t)bootOffset); |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1395 | /* Mimic 3.8 behavior, else 2m disk do not work (???) |
| 1396 | * luferbu@fluidsignal.com (Luis Bustamante), Fri, 14 Jun 2002 |
| 1397 | */ |
| 1398 | if(used_dev.use_2m & 0x7f) { |
| 1399 | boot.boot.jump[0] = 0xeb; |
| 1400 | boot.boot.jump[1] = 0x80; |
| 1401 | boot.boot.jump[2] = 0x90; |
| 1402 | } |
| 1403 | if(used_dev.use_2m & 0x7f) |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1404 | Fs->num_fat = 1; |
| 1405 | if(haveMediaDesc) |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1406 | boot.boot.descr=mediaDesc; |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1407 | Fs->lastFatSectorNr = 0; |
| 1408 | Fs->lastFatSectorData = 0; |
| 1409 | zero_fat(Fs, boot.boot.descr); |
| 1410 | Fs->freeSpace = Fs->num_clus; |
| 1411 | Fs->last = 2; |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1412 | |
| 1413 | #ifdef USE_XDF |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1414 | if(used_dev.misc_flags & USE_XDF_FLAG) |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1415 | for(i=0; |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1416 | i < (info.BadSectors+Fs->cluster_size-1)/Fs->cluster_size; |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1417 | i++) |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1418 | fatEncode(Fs, i+2, 0xfff7); |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1419 | #endif |
| 1420 | |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1421 | format_root(Fs, label, &boot); |
| 1422 | if(PWRITES((Stream_t *)Fs, boot.characters, 0, Fs->sector_size) < 0) { |
| 1423 | fprintf(stderr, "Error writing boot sector\n"); |
| 1424 | exit(1); |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1425 | } |
| 1426 | |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1427 | if(Fs->fat_bits == 32 && WORD_S(ext.fat32.backupBoot) != MAX16) { |
| 1428 | if(PWRITES((Stream_t *)Fs, boot.characters, |
| 1429 | sectorsToBytes(Fs, WORD_S(ext.fat32.backupBoot)), |
| 1430 | Fs->sector_size) < 0) { |
| 1431 | fprintf(stderr, "Error writing backup boot sector\n"); |
| 1432 | exit(1); |
| 1433 | } |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1434 | } |
Yi Kong | 39bbd96 | 2022-01-09 19:41:38 +0800 | [diff] [blame] | 1435 | |
| 1436 | FREE((Stream_t **)&Fs); |
Alistair Delva | beaee83 | 2021-02-24 11:27:23 -0800 | [diff] [blame] | 1437 | #ifdef USE_XDF |
| 1438 | if(format_xdf && isatty(0) && !getenv("MTOOLS_USE_XDF")) |
| 1439 | fprintf(stderr, |
| 1440 | "Note:\n" |
| 1441 | "Remember to set the \"MTOOLS_USE_XDF\" environmental\n" |
| 1442 | "variable before accessing this disk\n\n" |
| 1443 | "Bourne shell syntax (sh, ash, bash, ksh, zsh etc):\n" |
| 1444 | " export MTOOLS_USE_XDF=1\n\n" |
| 1445 | "C shell syntax (csh and tcsh):\n" |
| 1446 | " setenv MTOOLS_USE_XDF 1\n" ); |
| 1447 | #endif |
| 1448 | exit(0); |
| 1449 | } |