4 * R/O (V)FAT 12/16/32 filesystem implementation by Marcus Sundberg
6 * 2002-07-28 - rjones@nexus-tech.net - ported to ppcboot v1.1.6
7 * 2003-03-10 - kharris@nexus-tech.net - ported to uboot
9 * See file CREDITS for list of people who contributed to this
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License as
14 * published by the Free Software Foundation; either version 2 of
15 * the License, or (at your option) any later version.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
32 #include <asm/byteorder.h>
36 * Convert a string to lowercase.
38 static void downcase (char *str)
40 while (*str != '\0') {
46 static block_dev_desc_t *cur_dev = NULL;
48 static unsigned long part_offset = 0;
50 static int cur_part = 1;
52 #define DOS_PART_TBL_OFFSET 0x1be
53 #define DOS_PART_MAGIC_OFFSET 0x1fe
54 #define DOS_FS_TYPE_OFFSET 0x36
55 #define DOS_FS32_TYPE_OFFSET 0x52
57 static int disk_read (__u32 startblock, __u32 getsize, __u8 * bufptr)
62 startblock += part_offset;
64 if (cur_dev->block_read) {
65 return cur_dev->block_read(cur_dev->dev, startblock, getsize,
66 (unsigned long *) bufptr);
71 int fat_register_device (block_dev_desc_t * dev_desc, int part_no)
73 unsigned char buffer[dev_desc->blksz];
74 disk_partition_t info;
76 if (!dev_desc->block_read)
80 /* check if we have a MBR (on floppies we have only a PBR) */
81 if (dev_desc->block_read(dev_desc->dev, 0, 1, (ulong *)buffer) != 1) {
82 printf("** Can't read from device %d **\n",
86 if (buffer[DOS_PART_MAGIC_OFFSET] != 0x55 ||
87 buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) {
88 /* no signature found */
91 #if (defined(CONFIG_CMD_IDE) || \
92 defined(CONFIG_CMD_MG_DISK) || \
93 defined(CONFIG_CMD_SATA) || \
94 defined(CONFIG_CMD_SCSI) || \
95 defined(CONFIG_CMD_USB) || \
96 defined(CONFIG_MMC) || \
97 defined(CONFIG_SYSTEMACE) )
98 /* First we assume there is a MBR */
99 if (!get_partition_info(dev_desc, part_no, &info)) {
100 part_offset = info.start;
102 } else if ((strncmp((char *)&buffer[DOS_FS_TYPE_OFFSET], "FAT", 3) == 0) ||
103 (strncmp((char *)&buffer[DOS_FS32_TYPE_OFFSET], "FAT32", 5) == 0)) {
104 /* ok, we assume we are on a PBR only */
108 printf("** Partition %d not valid on device %d **\n",
109 part_no, dev_desc->dev);
114 if ((strncmp((char *)&buffer[DOS_FS_TYPE_OFFSET], "FAT", 3) == 0) ||
115 (strncmp((char *)&buffer[DOS_FS32_TYPE_OFFSET], "FAT32", 5) == 0)) {
116 /* ok, we assume we are on a PBR only */
119 info.start = part_offset;
121 /* FIXME we need to determine the start block of the
122 * partition where the DOS FS resides. This can be done
123 * by using the get_partition_info routine. For this
124 * purpose the libpart must be included.
134 * Get the first occurence of a directory delimiter ('/' or '\') in a string.
135 * Return index into string if found, -1 otherwise.
137 static int dirdelim (char *str)
141 while (*str != '\0') {
142 if (ISDIRDELIM(*str))
150 * Extract zero terminated short name from a directory entry.
152 static void get_name (dir_entry *dirent, char *s_name)
156 memcpy(s_name, dirent->name, 8);
159 while (*ptr && *ptr != ' ')
161 if (dirent->ext[0] && dirent->ext[0] != ' ') {
164 memcpy(ptr, dirent->ext, 3);
166 while (*ptr && *ptr != ' ')
170 if (*s_name == DELETED_FLAG)
172 else if (*s_name == aRING)
173 *s_name = DELETED_FLAG;
178 * Get the entry at index 'entry' in a FAT (12/16/32) table.
179 * On failure 0x00 is returned.
181 static __u32 get_fatent (fsdata *mydata, __u32 entry)
188 switch (mydata->fatsize) {
190 bufnum = entry / FAT32BUFSIZE;
191 offset = entry - bufnum * FAT32BUFSIZE;
194 bufnum = entry / FAT16BUFSIZE;
195 offset = entry - bufnum * FAT16BUFSIZE;
198 bufnum = entry / FAT12BUFSIZE;
199 offset = entry - bufnum * FAT12BUFSIZE;
203 /* Unsupported FAT size */
207 debug("FAT%d: entry: 0x%04x = %d, offset: 0x%04x = %d\n",
208 mydata->fatsize, entry, entry, offset, offset);
210 /* Read a new block of FAT entries into the cache. */
211 if (bufnum != mydata->fatbufnum) {
212 __u32 getsize = FATBUFBLOCKS;
213 __u8 *bufptr = mydata->fatbuf;
214 __u32 fatlength = mydata->fatlength;
215 __u32 startblock = bufnum * FATBUFBLOCKS;
217 if (getsize > fatlength)
220 fatlength *= mydata->sect_size; /* We want it in bytes now */
221 startblock += mydata->fat_sect; /* Offset from start of disk */
223 if (disk_read(startblock, getsize, bufptr) < 0) {
224 debug("Error reading FAT blocks\n");
227 mydata->fatbufnum = bufnum;
230 /* Get the actual entry from the table */
231 switch (mydata->fatsize) {
233 ret = FAT2CPU32(((__u32 *) mydata->fatbuf)[offset]);
236 ret = FAT2CPU16(((__u16 *) mydata->fatbuf)[offset]);
239 off16 = (offset * 3) / 4;
241 switch (offset & 0x3) {
243 ret = FAT2CPU16(((__u16 *) mydata->fatbuf)[off16]);
247 val1 = FAT2CPU16(((__u16 *)mydata->fatbuf)[off16]);
249 val2 = FAT2CPU16(((__u16 *)mydata->fatbuf)[off16 + 1]);
251 ret = (val2 << 4) | (val1 >> 12);
254 val1 = FAT2CPU16(((__u16 *)mydata->fatbuf)[off16]);
256 val2 = FAT2CPU16(((__u16 *)mydata->fatbuf)[off16 + 1]);
258 ret = (val2 << 8) | (val1 >> 8);
261 ret = FAT2CPU16(((__u16 *)mydata->fatbuf)[off16]);
262 ret = (ret & 0xfff0) >> 4;
269 debug("FAT%d: ret: %08x, offset: %04x\n",
270 mydata->fatsize, ret, offset);
276 * Read at most 'size' bytes from the specified cluster into 'buffer'.
277 * Return 0 on success, -1 otherwise.
280 get_cluster (fsdata *mydata, __u32 clustnum, __u8 *buffer,
287 startsect = mydata->data_begin +
288 clustnum * mydata->clust_size;
290 startsect = mydata->rootdir_sect;
293 debug("gc - clustnum: %d, startsect: %d\n", clustnum, startsect);
295 if (disk_read(startsect, size / mydata->sect_size, buffer) < 0) {
296 debug("Error reading data\n");
299 if (size % mydata->sect_size) {
300 __u8 tmpbuf[mydata->sect_size];
302 idx = size / mydata->sect_size;
303 if (disk_read(startsect + idx, 1, tmpbuf) < 0) {
304 debug("Error reading data\n");
307 buffer += idx * mydata->sect_size;
309 memcpy(buffer, tmpbuf, size % mydata->sect_size);
317 * Read at most 'maxsize' bytes from the file associated with 'dentptr'
319 * Return the number of bytes read or -1 on fatal errors.
322 get_contents (fsdata *mydata, dir_entry *dentptr, __u8 *buffer,
323 unsigned long maxsize)
325 unsigned long filesize = FAT2CPU32(dentptr->size), gotsize = 0;
326 unsigned int bytesperclust = mydata->clust_size * mydata->sect_size;
327 __u32 curclust = START(dentptr);
328 __u32 endclust, newclust;
329 unsigned long actsize;
331 debug("Filesize: %ld bytes\n", filesize);
333 if (maxsize > 0 && filesize > maxsize)
336 debug("%ld bytes\n", filesize);
338 actsize = bytesperclust;
342 /* search for consecutive clusters */
343 while (actsize < filesize) {
344 newclust = get_fatent(mydata, endclust);
345 if ((newclust - 1) != endclust)
347 if (CHECK_CLUST(newclust, mydata->fatsize)) {
348 debug("curclust: 0x%x\n", newclust);
349 debug("Invalid FAT entry\n");
353 actsize += bytesperclust;
356 /* actsize >= file size */
357 actsize -= bytesperclust;
359 /* get remaining clusters */
360 if (get_cluster(mydata, curclust, buffer, (int)actsize) != 0) {
361 printf("Error reading cluster\n");
365 /* get remaining bytes */
366 gotsize += (int)actsize;
370 if (get_cluster(mydata, endclust, buffer, (int)actsize) != 0) {
371 printf("Error reading cluster\n");
377 if (get_cluster(mydata, curclust, buffer, (int)actsize) != 0) {
378 printf("Error reading cluster\n");
381 gotsize += (int)actsize;
385 curclust = get_fatent(mydata, endclust);
386 if (CHECK_CLUST(curclust, mydata->fatsize)) {
387 debug("curclust: 0x%x\n", curclust);
388 printf("Invalid FAT entry\n");
391 actsize = bytesperclust;
396 #ifdef CONFIG_SUPPORT_VFAT
398 * Extract the file name information from 'slotptr' into 'l_name',
399 * starting at l_name[*idx].
400 * Return 1 if terminator (zero byte) is found, 0 otherwise.
402 static int slot2str (dir_slot *slotptr, char *l_name, int *idx)
406 for (j = 0; j <= 8; j += 2) {
407 l_name[*idx] = slotptr->name0_4[j];
408 if (l_name[*idx] == 0x00)
412 for (j = 0; j <= 10; j += 2) {
413 l_name[*idx] = slotptr->name5_10[j];
414 if (l_name[*idx] == 0x00)
418 for (j = 0; j <= 2; j += 2) {
419 l_name[*idx] = slotptr->name11_12[j];
420 if (l_name[*idx] == 0x00)
429 * Extract the full long filename starting at 'retdent' (which is really
430 * a slot) into 'l_name'. If successful also copy the real directory entry
432 * Return 0 on success, -1 otherwise.
434 __attribute__ ((__aligned__ (__alignof__ (dir_entry))))
435 __u8 get_vfatname_block[MAX_CLUSTSIZE];
438 get_vfatname (fsdata *mydata, int curclust, __u8 *cluster,
439 dir_entry *retdent, char *l_name)
442 dir_slot *slotptr = (dir_slot *)retdent;
443 __u8 *buflimit = cluster + mydata->sect_size * ((curclust == 0) ?
446 __u8 counter = (slotptr->id & ~LAST_LONG_ENTRY_MASK) & 0xff;
449 if (counter > VFAT_MAXSEQ) {
450 debug("Error: VFAT name is too long\n");
454 while ((__u8 *)slotptr < buflimit) {
457 if (((slotptr->id & ~LAST_LONG_ENTRY_MASK) & 0xff) != counter)
463 if ((__u8 *)slotptr >= buflimit) {
468 curclust = get_fatent(mydata, curclust);
469 if (CHECK_CLUST(curclust, mydata->fatsize)) {
470 debug("curclust: 0x%x\n", curclust);
471 printf("Invalid FAT entry\n");
475 if (get_cluster(mydata, curclust, get_vfatname_block,
476 mydata->clust_size * mydata->sect_size) != 0) {
477 debug("Error: reading directory block\n");
481 slotptr2 = (dir_slot *)get_vfatname_block;
482 while (counter > 0) {
483 if (((slotptr2->id & ~LAST_LONG_ENTRY_MASK)
490 /* Save the real directory entry */
491 realdent = (dir_entry *)slotptr2;
492 while ((__u8 *)slotptr2 > get_vfatname_block) {
494 slot2str(slotptr2, l_name, &idx);
497 /* Save the real directory entry */
498 realdent = (dir_entry *)slotptr;
503 if (slot2str(slotptr, l_name, &idx))
505 } while (!(slotptr->id & LAST_LONG_ENTRY_MASK));
508 if (*l_name == DELETED_FLAG)
510 else if (*l_name == aRING)
511 *l_name = DELETED_FLAG;
514 /* Return the real directory entry */
515 memcpy(retdent, realdent, sizeof(dir_entry));
520 /* Calculate short name checksum */
521 static __u8 mkcksum (const char *str)
527 for (i = 0; i < 11; i++) {
528 ret = (((ret & 1) << 7) | ((ret & 0xfe) >> 1)) + str[i];
533 #endif /* CONFIG_SUPPORT_VFAT */
536 * Get the directory entry associated with 'filename' from the directory
537 * starting at 'startsect'
539 __attribute__ ((__aligned__ (__alignof__ (dir_entry))))
540 __u8 get_dentfromdir_block[MAX_CLUSTSIZE];
542 static dir_entry *get_dentfromdir (fsdata *mydata, int startsect,
543 char *filename, dir_entry *retdent,
546 __u16 prevcksum = 0xffff;
547 __u32 curclust = START(retdent);
548 int files = 0, dirs = 0;
550 debug("get_dentfromdir: %s\n", filename);
557 if (get_cluster(mydata, curclust, get_dentfromdir_block,
558 mydata->clust_size * mydata->sect_size) != 0) {
559 debug("Error: reading directory block\n");
563 dentptr = (dir_entry *)get_dentfromdir_block;
565 for (i = 0; i < DIRENTSPERCLUST; i++) {
566 char s_name[14], l_name[VFAT_MAXLEN_BYTES];
569 if (dentptr->name[0] == DELETED_FLAG) {
573 if ((dentptr->attr & ATTR_VOLUME)) {
574 #ifdef CONFIG_SUPPORT_VFAT
575 if ((dentptr->attr & ATTR_VFAT) == ATTR_VFAT &&
576 (dentptr->name[0] & LAST_LONG_ENTRY_MASK)) {
577 prevcksum = ((dir_slot *)dentptr)->alias_checksum;
578 get_vfatname(mydata, curclust,
579 get_dentfromdir_block,
586 isdir = (dentptr->attr & ATTR_DIR);
594 if (l_name[0] != 0) {
601 printf(" %8ld %s%c\n",
602 (long)FAT2CPU32(dentptr->size),
614 debug("vfatname: |%s|\n", l_name);
618 /* Volume label or VFAT entry */
623 if (dentptr->name[0] == 0) {
625 printf("\n%d file(s), %d dir(s)\n\n",
628 debug("Dentname == NULL - %d\n", i);
631 #ifdef CONFIG_SUPPORT_VFAT
632 if (dols && mkcksum(dentptr->name) == prevcksum) {
637 get_name(dentptr, s_name);
639 int isdir = (dentptr->attr & ATTR_DIR);
649 if (s_name[0] != 0) {
657 printf(" %8ld %s%c\n",
658 (long)FAT2CPU32(dentptr->size),
670 if (strcmp(filename, s_name)
671 && strcmp(filename, l_name)) {
672 debug("Mismatch: |%s|%s|\n", s_name, l_name);
677 memcpy(retdent, dentptr, sizeof(dir_entry));
679 debug("DentName: %s", s_name);
680 debug(", start: 0x%x", START(dentptr));
681 debug(", size: 0x%x %s\n",
682 FAT2CPU32(dentptr->size),
683 (dentptr->attr & ATTR_DIR) ? "(DIR)" : "");
688 curclust = get_fatent(mydata, curclust);
689 if (CHECK_CLUST(curclust, mydata->fatsize)) {
690 debug("curclust: 0x%x\n", curclust);
691 printf("Invalid FAT entry\n");
700 * Read boot sector and volume info from a FAT filesystem
703 read_bootsectandvi (boot_sector *bs, volume_info *volinfo, int *fatsize)
706 volume_info *vistart;
709 if (cur_dev == NULL) {
710 debug("Error: no device selected\n");
714 block = malloc(cur_dev->blksz);
716 debug("Error: allocating block\n");
720 if (disk_read (0, 1, block) < 0) {
721 debug("Error: reading block\n");
725 memcpy(bs, block, sizeof(boot_sector));
726 bs->reserved = FAT2CPU16(bs->reserved);
727 bs->fat_length = FAT2CPU16(bs->fat_length);
728 bs->secs_track = FAT2CPU16(bs->secs_track);
729 bs->heads = FAT2CPU16(bs->heads);
730 bs->total_sect = FAT2CPU32(bs->total_sect);
733 if (bs->fat_length == 0) {
735 bs->fat32_length = FAT2CPU32(bs->fat32_length);
736 bs->flags = FAT2CPU16(bs->flags);
737 bs->root_cluster = FAT2CPU32(bs->root_cluster);
738 bs->info_sector = FAT2CPU16(bs->info_sector);
739 bs->backup_boot = FAT2CPU16(bs->backup_boot);
740 vistart = (volume_info *)(block + sizeof(boot_sector));
743 vistart = (volume_info *)&(bs->fat32_length);
746 memcpy(volinfo, vistart, sizeof(volume_info));
748 if (*fatsize == 32) {
749 if (strncmp(FAT32_SIGN, vistart->fs_type, SIGNLEN) == 0)
752 if (strncmp(FAT12_SIGN, vistart->fs_type, SIGNLEN) == 0) {
756 if (strncmp(FAT16_SIGN, vistart->fs_type, SIGNLEN) == 0) {
762 debug("Error: broken fs_type sign\n");
770 __attribute__ ((__aligned__ (__alignof__ (dir_entry))))
771 __u8 do_fat_read_block[MAX_CLUSTSIZE];
774 do_fat_read (const char *filename, void *buffer, unsigned long maxsize,
777 char fnamecopy[2048];
781 fsdata *mydata = &datablock;
783 __u16 prevcksum = 0xffff;
787 int files = 0, dirs = 0;
790 __u32 root_cluster = 0;
791 int rootdir_size = 0;
794 if (read_bootsectandvi(&bs, &volinfo, &mydata->fatsize)) {
795 debug("Error: reading boot sector\n");
799 if (mydata->fatsize == 32) {
800 root_cluster = bs.root_cluster;
801 mydata->fatlength = bs.fat32_length;
803 mydata->fatlength = bs.fat_length;
806 mydata->fat_sect = bs.reserved;
808 cursect = mydata->rootdir_sect
809 = mydata->fat_sect + mydata->fatlength * bs.fats;
811 mydata->sect_size = (bs.sector_size[1] << 8) + bs.sector_size[0];
812 mydata->clust_size = bs.cluster_size;
814 if (mydata->fatsize == 32) {
815 mydata->data_begin = mydata->rootdir_sect -
816 (mydata->clust_size * 2);
818 rootdir_size = ((bs.dir_entries[1] * (int)256 +
822 mydata->data_begin = mydata->rootdir_sect +
824 (mydata->clust_size * 2);
827 mydata->fatbufnum = -1;
828 mydata->fatbuf = malloc(FATBUFSIZE);
829 if (mydata->fatbuf == NULL) {
830 debug("Error: allocating memory\n");
834 #ifdef CONFIG_SUPPORT_VFAT
835 debug("VFAT Support enabled\n");
837 debug("FAT%d, fat_sect: %d, fatlength: %d\n",
838 mydata->fatsize, mydata->fat_sect, mydata->fatlength);
839 debug("Rootdir begins at cluster: %d, sector: %d, offset: %x\n"
840 "Data begins at: %d\n",
842 mydata->rootdir_sect,
843 mydata->rootdir_sect * mydata->sect_size, mydata->data_begin);
844 debug("Sector size: %d, cluster size: %d\n", mydata->sect_size,
847 /* "cwd" is always the root... */
848 while (ISDIRDELIM(*filename))
851 /* Make a copy of the filename and convert it to lowercase */
852 strcpy(fnamecopy, filename);
855 if (*fnamecopy == '\0') {
860 } else if ((idx = dirdelim(fnamecopy)) >= 0) {
862 fnamecopy[idx] = '\0';
863 subname = fnamecopy + idx + 1;
865 /* Handle multiple delimiters */
866 while (ISDIRDELIM(*subname))
876 debug("FAT read sect=%d, clust_size=%d, DIRENTSPERBLOCK=%d\n",
877 cursect, mydata->clust_size, DIRENTSPERBLOCK);
879 if (disk_read(cursect,
880 (mydata->fatsize == 32) ?
881 (mydata->clust_size) :
883 do_fat_read_block) < 0) {
884 debug("Error: reading rootdir block\n");
888 dentptr = (dir_entry *) do_fat_read_block;
890 for (i = 0; i < DIRENTSPERBLOCK; i++) {
891 char s_name[14], l_name[VFAT_MAXLEN_BYTES];
894 if (dentptr->name[0] == DELETED_FLAG) {
898 if ((dentptr->attr & ATTR_VOLUME)) {
899 #ifdef CONFIG_SUPPORT_VFAT
900 if ((dentptr->attr & ATTR_VFAT) == ATTR_VFAT &&
901 (dentptr->name[0] & LAST_LONG_ENTRY_MASK)) {
903 ((dir_slot *)dentptr)->alias_checksum;
910 if (dols == LS_ROOT) {
914 (dentptr->attr & ATTR_DIR);
922 if (l_name[0] != 0) {
929 printf(" %8ld %s%c\n",
930 (long)FAT2CPU32(dentptr->size),
942 debug("Rootvfatname: |%s|\n",
947 /* Volume label or VFAT entry */
951 } else if (dentptr->name[0] == 0) {
952 debug("RootDentname == NULL - %d\n", i);
953 if (dols == LS_ROOT) {
954 printf("\n%d file(s), %d dir(s)\n\n",
960 #ifdef CONFIG_SUPPORT_VFAT
961 else if (dols == LS_ROOT &&
962 mkcksum(dentptr->name) == prevcksum) {
967 get_name(dentptr, s_name);
969 if (dols == LS_ROOT) {
970 int isdir = (dentptr->attr & ATTR_DIR);
976 if (s_name[0] != 0) {
982 if (s_name[0] != 0) {
989 printf(" %8ld %s%c\n",
990 (long)FAT2CPU32(dentptr->size),
1001 if (strcmp(fnamecopy, s_name)
1002 && strcmp(fnamecopy, l_name)) {
1003 debug("RootMismatch: |%s|%s|\n", s_name,
1009 if (isdir && !(dentptr->attr & ATTR_DIR))
1012 debug("RootName: %s", s_name);
1013 debug(", start: 0x%x", START(dentptr));
1014 debug(", size: 0x%x %s\n",
1015 FAT2CPU32(dentptr->size),
1016 isdir ? "(DIR)" : "");
1018 goto rootdir_done; /* We got a match */
1020 debug("END LOOP: j=%d clust_size=%d\n", j,
1021 mydata->clust_size);
1024 * On FAT32 we must fetch the FAT entries for the next
1025 * root directory clusters when a cluster has been
1026 * completely processed.
1030 if ((mydata->fatsize == 32) && (j == mydata->clust_size)) {
1034 nxt_clust = get_fatent(mydata, root_cluster);
1035 fat32_end = CHECK_CLUST(nxt_clust, 32);
1037 nxtsect = mydata->data_begin +
1038 (nxt_clust * mydata->clust_size);
1040 root_cluster = nxt_clust;
1048 /* If end of rootdir reached */
1049 if ((mydata->fatsize == 32 && fat32_end) ||
1050 (mydata->fatsize != 32 && j == rootdir_size)) {
1051 if (dols == LS_ROOT) {
1052 printf("\n%d file(s), %d dir(s)\n\n",
1064 int startsect = mydata->data_begin
1065 + START(dentptr) * mydata->clust_size;
1067 char *nextname = NULL;
1072 idx = dirdelim(subname);
1075 subname[idx] = '\0';
1076 nextname = subname + idx + 1;
1077 /* Handle multiple delimiters */
1078 while (ISDIRDELIM(*nextname))
1080 if (dols && *nextname == '\0')
1083 if (dols && firsttime) {
1090 if (get_dentfromdir(mydata, startsect, subname, dentptr,
1091 isdir ? 0 : dols) == NULL) {
1098 if (!(dentptr->attr & ATTR_DIR))
1104 ret = get_contents(mydata, dentptr, buffer, maxsize);
1105 debug("Size: %d, got: %ld\n", FAT2CPU32(dentptr->size), ret);
1108 free(mydata->fatbuf);
1112 int file_fat_detectfs (void)
1115 volume_info volinfo;
1119 if (cur_dev == NULL) {
1120 printf("No current device\n");
1124 #if defined(CONFIG_CMD_IDE) || \
1125 defined(CONFIG_CMD_MG_DISK) || \
1126 defined(CONFIG_CMD_SATA) || \
1127 defined(CONFIG_CMD_SCSI) || \
1128 defined(CONFIG_CMD_USB) || \
1130 printf("Interface: ");
1131 switch (cur_dev->if_type) {
1157 printf("\n Device %d: ", cur_dev->dev);
1161 if (read_bootsectandvi(&bs, &volinfo, &fatsize)) {
1162 printf("\nNo valid FAT fs found\n");
1166 memcpy(vol_label, volinfo.volume_label, 11);
1167 vol_label[11] = '\0';
1168 volinfo.fs_type[5] = '\0';
1170 printf("Partition %d: Filesystem: %s \"%s\"\n", cur_part,
1171 volinfo.fs_type, vol_label);
1176 int file_fat_ls (const char *dir)
1178 return do_fat_read(dir, NULL, 0, LS_YES);
1181 long file_fat_read (const char *filename, void *buffer, unsigned long maxsize)
1183 printf("reading %s\n", filename);
1184 return do_fat_read(filename, buffer, maxsize, LS_NO);