From 819e36b8ceadb1d67db1ffe91b99c5282bfc6159 Mon Sep 17 00:00:00 2001 From: "H. Nikolaus Schaller" Date: Fri, 20 Apr 2012 14:10:36 +0200 Subject: tree moved to a better location --- x-loader/fs/fat/fat.c | 960 -------------------------------------------------- 1 file changed, 960 deletions(-) delete mode 100644 x-loader/fs/fat/fat.c (limited to 'x-loader/fs/fat/fat.c') diff --git a/x-loader/fs/fat/fat.c b/x-loader/fs/fat/fat.c deleted file mode 100644 index e32cb62..0000000 --- a/x-loader/fs/fat/fat.c +++ /dev/null @@ -1,960 +0,0 @@ -/* - * fat.c - * - * R/O (V)FAT 12/16/32 filesystem implementation by Marcus Sundberg - * - * 2002-07-28 - rjones@nexus-tech.net - ported to ppcboot v1.1.6 - * 2003-03-10 - kharris@nexus-tech.net - ported to uboot - * - * See file CREDITS for list of people who contributed to this - * project. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, - * MA 02111-1307 USA - */ - -#include -#include -#include -#include -#include - -#ifdef CFG_CMD_FAT - -/* - * Convert a string to lowercase. - */ -static void -downcase(char *str) -{ - while (*str != '\0') { - TOLOWER(*str); - str++; - } -} - -static block_dev_desc_t *cur_dev = NULL; -static unsigned long part_offset = 0; -static int cur_part = 1; - -#define DOS_PART_TBL_OFFSET 0x1be -#define DOS_PART_MAGIC_OFFSET 0x1fe -#define DOS_FS_TYPE_OFFSET 0x52 - -int strncmp(const char * cs,const char * ct,size_t count) -{ - register signed char __res = 0; - - while (count) { - if ((__res = *cs - *ct++) != 0 || !*cs++) - break; - count--; - } - - return __res; -} - -char * strcpy(char * dest,const char *src) -{ - char *tmp = dest; - - while ((*dest++ = *src++) != '\0') - /* nothing */; - return tmp; -} - -int strcmp(const char * cs,const char * ct) -{ - register signed char __res; - - while (1) { - if ((__res = *cs - *ct++) != 0 || !*cs++) - break; - } - - return __res; -} -void * memcpy(void * dest,const void *src,size_t count) -{ - char *tmp = (char *) dest, *s = (char *) src; - - while (count--) - *tmp++ = *s++; - - return dest; -} - - -int disk_read (__u32 startblock, __u32 getsize, __u8 * bufptr) -{ - startblock += part_offset; - if (cur_dev == NULL) - return -1; - if (cur_dev->block_read) { - return cur_dev->block_read (cur_dev->dev, startblock, getsize, (unsigned long *)bufptr); - } - return -1; -} - - -int -fat_register_device(block_dev_desc_t *dev_desc, int part_no) -{ - unsigned char buffer[SECTOR_SIZE]; - - if (!dev_desc->block_read) - return -1; - cur_dev=dev_desc; - /* check if we have a MBR (on floppies we have only a PBR) */ - if (dev_desc->block_read (dev_desc->dev, 0, 1, (ulong *) buffer) != 1) { - printf ("** Can't read from device %d **\n", dev_desc->dev); - return -1; - } - if (buffer[DOS_PART_MAGIC_OFFSET] != 0x55 || - buffer[DOS_PART_MAGIC_OFFSET + 1] != 0xaa) { - /* no signature found */ - return -1; - } - if(!strncmp((char *)&buffer[DOS_FS_TYPE_OFFSET],"FAT",3)) { - /* ok, we assume we are on a PBR only */ - cur_part = 1; - part_offset=0; - } - else { -#if (CONFIG_COMMANDS & CFG_CMD_IDE) || (CONFIG_COMMANDS & CFG_CMD_SCSI) || \ - (CONFIG_COMMANDS & CFG_CMD_USB) || (CONFIG_COMMANDS & CFG_CMD_MMC) || defined(CONFIG_SYSTEMACE) - disk_partition_t info; - if(!get_partition_info(dev_desc, part_no, &info)) { - part_offset = info.start; - cur_part = part_no; - } - else { - printf ("** Partition %d not valid on device %d **\n",part_no,dev_desc->dev); - return -1; - } -#else - part_offset = buffer[DOS_PART_TBL_OFFSET+8] | - buffer[DOS_PART_TBL_OFFSET+9] <<8 | - buffer[DOS_PART_TBL_OFFSET+10]<<16 | - buffer[DOS_PART_TBL_OFFSET+11]<<24; - - cur_part = 1; -#endif - } - return 0; -} - - -/* - * Get the first occurence of a directory delimiter ('/' or '\') in a string. - * Return index into string if found, -1 otherwise. - */ -static int -dirdelim(char *str) -{ - char *start = str; - - while (*str != '\0') { - if (ISDIRDELIM(*str)) return str - start; - str++; - } - return -1; -} - - -/* - * Match volume_info fs_type strings. - * Return 0 on match, -1 otherwise. - */ -static int -compare_sign(char *str1, char *str2) -{ - char *end = str1+SIGNLEN; - - while (str1 != end) { - if (*str1 != *str2) { - return -1; - } - str1++; - str2++; - } - - return 0; -} - - -/* - * Extract zero terminated short name from a directory entry. - */ -static void get_name (dir_entry *dirent, char *s_name) -{ - char *ptr; - - memcpy (s_name, dirent->name, 8); - s_name[8] = '\0'; - ptr = s_name; - while (*ptr && *ptr != ' ') - ptr++; - if (dirent->ext[0] && dirent->ext[0] != ' ') { - *ptr = '.'; - ptr++; - memcpy (ptr, dirent->ext, 3); - ptr[3] = '\0'; - while (*ptr && *ptr != ' ') - ptr++; - } - *ptr = '\0'; - if (*s_name == DELETED_FLAG) - *s_name = '\0'; - else if (*s_name == aRING) - *s_name = 'å'; - downcase (s_name); -} - -/* - * Get the entry at index 'entry' in a FAT (12/16/32) table. - * On failure 0x00 is returned. - */ -static __u32 -get_fatent(fsdata *mydata, __u32 entry) -{ - __u32 bufnum; - __u32 offset; - __u32 ret = 0x00; - - switch (mydata->fatsize) { - case 32: - bufnum = entry / FAT32BUFSIZE; - offset = entry - bufnum * FAT32BUFSIZE; - break; - case 16: - bufnum = entry / FAT16BUFSIZE; - offset = entry - bufnum * FAT16BUFSIZE; - break; - case 12: - bufnum = entry / FAT12BUFSIZE; - offset = entry - bufnum * FAT12BUFSIZE; - break; - - default: - /* Unsupported FAT size */ - return ret; - } - /* Read a new block of FAT entries into the cache. */ - if (bufnum != mydata->fatbufnum) { - int getsize = FATBUFSIZE/FS_BLOCK_SIZE; - __u8 *bufptr = mydata->fatbuf; - __u32 fatlength = mydata->fatlength; - __u32 startblock = bufnum * FATBUFBLOCKS; - unsigned long i; - - fatlength *= SECTOR_SIZE; /* We want it in bytes now */ - startblock += mydata->fat_sect; /* Offset from start of disk */ - - if (getsize > fatlength) getsize = fatlength; - if (disk_read(startblock, getsize, bufptr) < 0) { - FAT_DPRINT("Error reading FAT blocks\n"); - return ret; - } - mydata->fatbufnum = bufnum; - } - - /* Get the actual entry from the table */ - switch (mydata->fatsize) { - case 32: - ret = FAT2CPU32(((__u32*)mydata->fatbuf)[offset]); - break; - case 16: - ret = FAT2CPU16(((__u16*)mydata->fatbuf)[offset]); - break; - case 12: { - __u32 off16 = (offset*3)/4; - __u16 val1, val2; - - switch (offset & 0x3) { - case 0: - ret = FAT2CPU16(((__u16*)mydata->fatbuf)[off16]); - ret &= 0xfff; - break; - case 1: - val1 = FAT2CPU16(((__u16*)mydata->fatbuf)[off16]); - val1 &= 0xf000; - val2 = FAT2CPU16(((__u16*)mydata->fatbuf)[off16+1]); - val2 &= 0x00ff; - ret = (val2 << 4) | (val1 >> 12); - break; - case 2: - val1 = FAT2CPU16(((__u16*)mydata->fatbuf)[off16]); - val1 &= 0xff00; - val2 = FAT2CPU16(((__u16*)mydata->fatbuf)[off16+1]); - val2 &= 0x000f; - ret = (val2 << 8) | (val1 >> 8); - break; - case 3: - ret = FAT2CPU16(((__u16*)mydata->fatbuf)[off16]);; - ret = (ret & 0xfff0) >> 4; - break; - default: - break; - } - } - break; - } - FAT_DPRINT("ret: %d, offset: %d\n", ret, offset); - - return ret; -} - -static int memcmp(__u8 *p1, __u8 *p2, unsigned long len) -{ - while(len-- > 0) { - __u8 diff=(*p1++ - *p2++); - if(diff) - return diff; - } - return 0; // equal -} - -/* - * Read at most 'size' bytes from the specified cluster into 'buffer'. - * Return 0 on success, -1 otherwise. - */ -static int -get_cluster(fsdata *mydata, __u32 clustnum, __u8 *buffer, unsigned long size) -{ - int idx = 0; - __u32 startsect; - __u8 tmpbuf[FS_BLOCK_SIZE]; - - if (clustnum > 0) { - startsect = mydata->data_begin + clustnum*mydata->clust_size; - } else { - startsect = mydata->rootdir_sect; - } - - // sacrifice speed for reliability (RAM-Test) - - idx = size/FS_BLOCK_SIZE; - while(idx-- > 0) { // read full blocks - if (disk_read(startsect, 1 , tmpbuf) < 0) { - FAT_DPRINT("Error reading data\n"); - return -1; - } - memcpy(buffer, tmpbuf, FS_BLOCK_SIZE); - if(memcmp(buffer, tmpbuf, FS_BLOCK_SIZE) != 0) { - FAT_ERROR("Memory error at 0x%8x\n", buffer); - return -1; - } - startsect++; - buffer += FS_BLOCK_SIZE; - } - - if(size % FS_BLOCK_SIZE) { // read last fragment - idx= size/FS_BLOCK_SIZE; - if (disk_read(startsect, 1, tmpbuf) < 0) { - FAT_DPRINT("Error reading data\n"); - return -1; - } - - memcpy(buffer, tmpbuf, size % FS_BLOCK_SIZE); - if(memcmp(buffer, tmpbuf, size % FS_BLOCK_SIZE) != 0) { - FAT_ERROR("Memory error at 0x%8x\n", buffer); - return -1; - } - return 0; - } - - return 0; -} - - -/* - * Read at most 'maxsize' bytes from the file associated with 'dentptr' - * into 'buffer'. - * Return the number of bytes read or -1 on fatal errors. - */ -static long -get_contents(fsdata *mydata, dir_entry *dentptr, __u8 *buffer, - unsigned long maxsize) -{ - unsigned long filesize = FAT2CPU32(dentptr->size), gotsize = 0; - unsigned int bytesperclust = mydata->clust_size * SECTOR_SIZE; - __u32 curclust = START(dentptr); - __u32 endclust, newclust; - unsigned long actsize; - - FAT_DPRINT("Filesize: %ld bytes\n", filesize); - - if (maxsize > 0 && filesize > maxsize) filesize = maxsize; - - FAT_DPRINT("Reading: %ld bytes\n", filesize); - - actsize=bytesperclust; - endclust=curclust; - do { - /* search for consecutive clusters */ - while(actsize < filesize) { - newclust = get_fatent(mydata, endclust); - if((newclust -1)!=endclust) - goto getit; - if (newclust <= 0x0001 || newclust >= 0xfffff0) { - FAT_DPRINT("curclust: 0x%x\n", newclust); - FAT_DPRINT("Invalid FAT entry\n"); - return gotsize; - } - endclust=newclust; - actsize+= bytesperclust; - } - /* actsize >= file size */ - actsize -= bytesperclust; - /* get remaining clusters */ - if (get_cluster(mydata, curclust, buffer, (int)actsize) != 0) { - FAT_ERROR("Error reading cluster\n"); - return -1; - } - /* get remaining bytes */ - gotsize += (int)actsize; - filesize -= actsize; - buffer += actsize; - actsize= filesize; - if (get_cluster(mydata, endclust, buffer, (int)actsize) != 0) { - FAT_ERROR("Error reading cluster\n"); - return -1; - } - gotsize+=actsize; - return gotsize; -getit: - if (get_cluster(mydata, curclust, buffer, (int)actsize) != 0) { - FAT_ERROR("Error reading cluster\n"); - return -1; - } - gotsize += (int)actsize; - filesize -= actsize; - buffer += actsize; - curclust = get_fatent(mydata, endclust); - if (curclust <= 0x0001 || curclust >= 0xfffff0) { - FAT_DPRINT("curclust: 0x%x\n", curclust); - FAT_ERROR("Invalid FAT entry\n"); - return gotsize; - } - actsize=bytesperclust; - endclust=curclust; - } while (1); -} - - -#ifdef CONFIG_SUPPORT_VFAT -/* - * Extract the file name information from 'slotptr' into 'l_name', - * starting at l_name[*idx]. - * Return 1 if terminator (zero byte) is found, 0 otherwise. - */ -static int -slot2str(dir_slot *slotptr, char *l_name, int *idx) -{ - int j; - - for (j = 0; j <= 8; j += 2) { - l_name[*idx] = slotptr->name0_4[j]; - if (l_name[*idx] == 0x00) return 1; - (*idx)++; - } - for (j = 0; j <= 10; j += 2) { - l_name[*idx] = slotptr->name5_10[j]; - if (l_name[*idx] == 0x00) return 1; - (*idx)++; - } - for (j = 0; j <= 2; j += 2) { - l_name[*idx] = slotptr->name11_12[j]; - if (l_name[*idx] == 0x00) return 1; - (*idx)++; - } - - return 0; -} - -/* Calculate short name checksum */ -static __u8 -mkcksum(const char *str) -{ - int i; - __u8 ret = 0; - - for (i = 0; i < 11; i++) { - ret = (((ret&1)<<7)|((ret&0xfe)>>1)) + str[i]; - } - - return ret; -} -#endif - - -/* - * Get the directory entry associated with 'filename' from the directory - * starting at 'startsect' - */ - - -static dir_entry *get_dentfromdir (fsdata * mydata, int startsect, - char *filename, dir_entry * retdent, - int dols) -{ - -} - -#if 0 -__u8 get_dentfromdir_block[MAX_CLUSTSIZE]; -static dir_entry *get_dentfromdir (fsdata * mydata, int startsect, - char *filename, dir_entry * retdent, - int dols) -{ - __u16 prevcksum = 0xffff; - __u32 curclust = START (retdent); - int files = 0, dirs = 0; - - while (1) { - dir_entry *dentptr; - int i; - - if (get_cluster (mydata, curclust, get_dentfromdir_block, - mydata->clust_size * SECTOR_SIZE) != 0) { - FAT_DPRINT ("Error: reading directory block\n"); - return NULL; - } - dentptr = (dir_entry *) get_dentfromdir_block; - for (i = 0; i < DIRENTSPERCLUST; i++) { - char s_name[14], l_name[256]; - - l_name[0] = '\0'; - if (dentptr->name[0] == DELETED_FLAG) { - dentptr++; - continue; - } - if ((dentptr->attr & ATTR_VOLUME)) { - /* Volume label or VFAT entry */ - dentptr++; - continue; - } - if (dentptr->name[0] == 0) { - if (dols) { - printf ("\n%d file(s), %d dir(s)\n\n", files, dirs); - } - FAT_DPRINT ("Dentname == NULL - %d\n", i); - return NULL; - } -#ifdef CONFIG_SUPPORT_VFAT - if (dols && mkcksum (dentptr->name) == prevcksum) { - dentptr++; - continue; - } -#endif - get_name (dentptr, s_name); - if (dols) { - int isdir = (dentptr->attr & ATTR_DIR); - char dirc; - int doit = 0; - - if (isdir) { - dirs++; - dirc = '/'; - doit = 1; - } else { - dirc = ' '; - if (s_name[0] != 0) { - files++; - doit = 1; - } - } - if (doit) { - if (dirc == ' ') { - printf (" %8ld %s%c\n", - (long) FAT2CPU32 (dentptr->size), s_name, - dirc); - } else { - printf (" %s%c\n", s_name, dirc); - } - } - dentptr++; - continue; - } - if (strcmp (filename, s_name) && strcmp (filename, l_name)) { - FAT_DPRINT ("Mismatch: |%s|%s|\n", s_name, l_name); - dentptr++; - continue; - } - memcpy (retdent, dentptr, sizeof (dir_entry)); - - FAT_DPRINT ("DentName: %s", s_name); - FAT_DPRINT (", start: 0x%x", START (dentptr)); - FAT_DPRINT (", size: 0x%x %s\n", - FAT2CPU32 (dentptr->size), - (dentptr->attr & ATTR_DIR) ? "(DIR)" : ""); - - return retdent; - } - curclust = get_fatent (mydata, curclust); - if (curclust <= 0x0001 || curclust >= 0xfffff0) { - FAT_DPRINT ("curclust: 0x%x\n", curclust); - FAT_ERROR ("Invalid FAT entry\n"); - return NULL; - } - } - - return NULL; -} -#endif - - -/* - * Read boot sector and volume info from a FAT filesystem - */ -static int -read_bootsectandvi(boot_sector *bs, volume_info *volinfo, int *fatsize) -{ - __u8 block[FS_BLOCK_SIZE]; - volume_info *vistart; - - printf("Reading boot sector\n"); - - if (disk_read(0, 1, block) < 0) { - FAT_DPRINT("Error: reading block\n"); - return -1; - } - - memcpy(bs, block, sizeof(boot_sector)); - bs->reserved = FAT2CPU16(bs->reserved); - bs->fat_length = FAT2CPU16(bs->fat_length); - bs->secs_track = FAT2CPU16(bs->secs_track); - bs->heads = FAT2CPU16(bs->heads); -#if 0 /* UNUSED */ - bs->hidden = FAT2CPU32(bs->hidden); -#endif - bs->total_sect = FAT2CPU32(bs->total_sect); - - /* FAT32 entries */ - if (bs->fat_length == 0) { - /* Assume FAT32 */ - bs->fat32_length = FAT2CPU32(bs->fat32_length); - bs->flags = FAT2CPU16(bs->flags); - bs->root_cluster = FAT2CPU32(bs->root_cluster); - bs->info_sector = FAT2CPU16(bs->info_sector); - bs->backup_boot = FAT2CPU16(bs->backup_boot); - vistart = (volume_info*) (block + sizeof(boot_sector)); - *fatsize = 32; - } else { - vistart = (volume_info*) &(bs->fat32_length); - *fatsize = 0; - } - memcpy(volinfo, vistart, sizeof(volume_info)); - - /* Terminate fs_type string. Writing past the end of vistart - is ok - it's just the buffer. */ - vistart->fs_type[8] = '\0'; - - if (*fatsize == 32) { - if (compare_sign(FAT32_SIGN, vistart->fs_type) == 0) { - return 0; - } - } else { - if (compare_sign(FAT12_SIGN, vistart->fs_type) == 0) { - *fatsize = 12; - return 0; - } - if (compare_sign(FAT16_SIGN, vistart->fs_type) == 0) { - *fatsize = 16; - return 0; - } - } - - FAT_DPRINT("Error: broken fs_type sign\n"); - return -1; -} - -#if 0 -__u8 do_fat_read_block[MAX_CLUSTSIZE]; /* Block buffer */ -#endif - -__u8 *fnamecopy = 0x80500000; -__u8 *do_fat_read_block = 0x80500880; - -boot_sector bs; -volume_info volinfo; -fsdata datablock; - -long -do_fat_read(const char *filename, void *buffer, unsigned long maxsize, - int dols) -{ -#if CONFIG_NIOS /* NIOS CPU cannot access big automatic arrays */ - static -#endif - fsdata *mydata = &datablock; - dir_entry *dentptr; - __u16 prevcksum = 0xffff; - char *subname = ""; - int rootdir_size, cursect, curclus; - int idx, isdir = 0; - int files = 0, dirs = 0; - long ret = 0; - int firsttime; - - if (read_bootsectandvi (&bs, &volinfo, &mydata->fatsize)) { - printf ("Error: reading boot sector\n"); - return -1; - } - if (mydata->fatsize == 32) { - mydata->fatlength = bs.fat32_length; - } else { - mydata->fatlength = bs.fat_length; - } - mydata->fat_sect = bs.reserved; - cursect = mydata->rootdir_sect - = mydata->fat_sect + mydata->fatlength * bs.fats; - curclus = bs.root_cluster; // For FAT32 only - mydata->clust_size = bs.cluster_size; - if (mydata->fatsize == 32) { - rootdir_size = mydata->clust_size; - mydata->data_begin = mydata->rootdir_sect /* + rootdir_size */ - - (mydata->clust_size * 2); - } else { - rootdir_size = ((bs.dir_entries[1] * (int) 256 + bs.dir_entries[0]) - * sizeof (dir_entry)) / SECTOR_SIZE; - mydata->data_begin = mydata->rootdir_sect + rootdir_size - - (mydata->clust_size * 2); - } - mydata->fatbufnum = -1; - - FAT_DPRINT ("FAT%d, fatlength: %d\n", mydata->fatsize, - mydata->fatlength); - FAT_DPRINT ("Rootdir begins at sector: %d, offset: %x, size: %d\n" - "Data begins at: %d\n", - mydata->rootdir_sect, mydata->rootdir_sect * SECTOR_SIZE, - rootdir_size, mydata->data_begin); - FAT_DPRINT ("Cluster size: %d\n", mydata->clust_size); - - /* "cwd" is always the root... */ - while (ISDIRDELIM (*filename)) - filename++; - /* Make a copy of the filename and convert it to lowercase */ - strcpy (fnamecopy, filename); - downcase (fnamecopy); - if (*fnamecopy == '\0') { - if (!dols){ - printf("\n not there\n"); - return -1; - } - dols = LS_ROOT; - } else if ((idx = dirdelim (fnamecopy)) >= 0) { - isdir = 1; - fnamecopy[idx] = '\0'; - subname = fnamecopy + idx + 1; - /* Handle multiple delimiters */ - while (ISDIRDELIM (*subname)) - subname++; - } else if (dols) { - isdir = 1; - } - - while (1) { - int i; - - if (disk_read (cursect, mydata->clust_size, do_fat_read_block) < 0) { - printf ("Error: reading rootdir block\n"); - return -1; - } - dentptr = (dir_entry *) do_fat_read_block; - for (i = 0; i < DIRENTSPERBLOCK; i++) { - char s_name[14], l_name[256]; - - l_name[0] = '\0'; - if ((dentptr->attr & ATTR_VOLUME)) { - /* Volume label or VFAT entry */ - dentptr++; - continue; - } else if (dentptr->name[0] == 0) { - FAT_DPRINT ("RootDentname == NULL - %d\n", i); - if (dols == LS_ROOT) { - printf ("\n%d file(s), %d dir(s)\n\n", files, dirs); - return 0; - } - return -1; - } -#ifdef CONFIG_SUPPORT_VFAT - else if (dols == LS_ROOT - && mkcksum (dentptr->name) == prevcksum) { - dentptr++; - continue; - } -#endif - get_name (dentptr, s_name); - if (dols == LS_ROOT) { - int isdir = (dentptr->attr & ATTR_DIR); - char dirc; - int doit = 0; - - if (isdir) { - dirc = '/'; - if (s_name[0] != 0) { - dirs++; - doit = 1; - } - } else { - dirc = ' '; - if (s_name[0] != 0) { - files++; - doit = 1; - } - } - if (doit) { - if (dirc == ' ') { - printf (" %8ld %s%c\n", - (long) FAT2CPU32 (dentptr->size), s_name, - dirc); - } else { - printf (" %s%c\n", s_name, dirc); - } - } - dentptr++; - continue; - } - if (strcmp (fnamecopy, s_name) && strcmp (fnamecopy, l_name)) { - FAT_DPRINT ("RootMismatch: |%s|%s|\n", s_name, l_name); - dentptr++; - continue; - } - if (isdir && !(dentptr->attr & ATTR_DIR)) - return -1; - - FAT_DPRINT ("RootName: %s", s_name); - FAT_DPRINT (", start: 0x%x", START (dentptr)); - FAT_DPRINT (", size: 0x%x %s\n", - FAT2CPU32 (dentptr->size), isdir ? "(DIR)" : ""); - - goto rootdir_done; /* We got a match */ - } - - if (mydata->fatsize != 32) - cursect++; - else { - // FAT32 does not guarantee contiguous root directory - curclus = get_fatent (mydata, curclus); - cursect = (curclus * mydata->clust_size) + mydata->data_begin; - - FAT_DPRINT ("root clus %d sector %d\n", curclus, cursect); - } - } - rootdir_done: - - firsttime = 1; - while (isdir) { - int startsect = mydata->data_begin - + START (dentptr) * mydata->clust_size; - dir_entry dent; - char *nextname = NULL; - - dent = *dentptr; - dentptr = &dent; - idx = dirdelim (subname); - if (idx >= 0) { - subname[idx] = '\0'; - nextname = subname + idx + 1; - /* Handle multiple delimiters */ - while (ISDIRDELIM (*nextname)) - nextname++; - if (dols && *nextname == '\0') - firsttime = 0; - } else { - if (dols && firsttime) { - firsttime = 0; - } else { - isdir = 0; - } - } - - if (get_dentfromdir (mydata, startsect, subname, dentptr, - isdir ? 0 : dols) == NULL) { - if (dols && !isdir) - return 0; - return -1; - } - - if (idx >= 0) { - if (!(dentptr->attr & ATTR_DIR)) - return -1; - subname = nextname; - } - } - ret = get_contents (mydata, dentptr, buffer, maxsize); - FAT_DPRINT ("Size: %d, got: %ld\n", FAT2CPU32 (dentptr->size), ret); - - return ret; -} - - -int -file_fat_detectfs(void) -{ - boot_sector bs; - volume_info volinfo; - int fatsize; - char vol_label[12]; - - if(cur_dev==NULL) { - printf("No current device\n"); - return 1; - } -#if (CONFIG_COMMANDS & CFG_CMD_IDE) || (CONFIG_COMMANDS & CFG_CMD_SCSI) || \ - (CONFIG_COMMANDS & CFG_CMD_USB) || (CONFIG_MMC) - printf("Interface: "); - switch(cur_dev->if_type) { - case IF_TYPE_IDE : printf("IDE"); break; - case IF_TYPE_SCSI : printf("SCSI"); break; - case IF_TYPE_ATAPI : printf("ATAPI"); break; - case IF_TYPE_USB : printf("USB"); break; - case IF_TYPE_DOC : printf("DOC"); break; - case IF_TYPE_MMC : printf("MMC"); break; - default : printf("Unknown"); - } - printf("\n Device %d: ",cur_dev->dev); - dev_print(cur_dev); -#endif - if(read_bootsectandvi(&bs, &volinfo, &fatsize)) { - printf("\nNo valid FAT fs found\n"); - return 1; - } - memcpy (vol_label, volinfo.volume_label, 11); - vol_label[11] = '\0'; - volinfo.fs_type[5]='\0'; - printf("Partition %d: Filesystem: %s \"%s\"\n",cur_part,volinfo.fs_type,vol_label); - return 0; -} - - -int -file_fat_ls(const char *dir) -{ - return do_fat_read(dir, NULL, 0, LS_YES); -} - - -long -file_fat_read(const char *filename, void *buffer, unsigned long maxsize) -{ - long ret; - ret = do_fat_read(filename, buffer, maxsize, LS_NO); - return ret; -} - -#endif /* #if (CONFIG_COMMANDS & CFG_CMD_FAT) */ -- cgit v1.1