diff options
Diffstat (limited to 'fs/fat/fat_write.c')
| -rw-r--r-- | fs/fat/fat_write.c | 30 |
1 files changed, 9 insertions, 21 deletions
diff --git a/fs/fat/fat_write.c b/fs/fat/fat_write.c index 3bfc1c4..a6181e7 100644 --- a/fs/fat/fat_write.c +++ b/fs/fat/fat_write.c @@ -41,23 +41,19 @@ static void uppercase(char *str, int len) } static int total_sector; -static int disk_write(__u32 startblock, __u32 getsize, __u8 *bufptr) +static int disk_write(__u32 block, __u32 nr_blocks, void *buf) { - if (cur_dev == NULL) + if (!cur_dev || !cur_dev->block_write) return -1; - if (startblock + getsize > total_sector) { + if (cur_part_info.start + block + nr_blocks > + cur_part_info.start + total_sector) { printf("error: overflow occurs\n"); return -1; } - startblock += part_offset; - - if (cur_dev->block_read) { - return cur_dev->block_write(cur_dev->dev, startblock, getsize, - (unsigned long *) bufptr); - } - return -1; + return cur_dev->block_write(cur_dev->dev, + cur_part_info.start + block, nr_blocks, buf); } /* @@ -797,7 +793,7 @@ static int check_overflow(fsdata *mydata, __u32 clustnum, unsigned long size) if (size % mydata->sect_size) sect_num++; - if (startsect + sect_num > total_sector) + if (startsect + sect_num > cur_part_info.start + total_sector) return -1; return 0; @@ -827,7 +823,6 @@ static dir_entry *empty_dentptr; static dir_entry *find_directory_entry(fsdata *mydata, int startsect, char *filename, dir_entry *retdent, __u32 start) { - __u16 prevcksum = 0xffff; __u32 curclust = (startsect - mydata->data_begin) / mydata->clust_size; debug("get_dentfromdir: %s\n", filename); @@ -861,8 +856,6 @@ static dir_entry *find_directory_entry(fsdata *mydata, int startsect, #ifdef CONFIG_SUPPORT_VFAT if ((dentptr->attr & ATTR_VFAT) && (dentptr->name[0] & LAST_LONG_ENTRY_MASK)) { - prevcksum = - ((dir_slot *)dentptr)->alias_checksum; get_long_file_name(mydata, curclust, get_dentfromdir_block, &dentptr, l_name); @@ -926,7 +919,6 @@ static int do_fat_write(const char *filename, void *buffer, unsigned long size) { dir_entry *dentptr, *retdent; - dir_slot *slotptr; __u32 startsect; __u32 start_cluster; boot_sector bs; @@ -934,7 +926,7 @@ static int do_fat_write(const char *filename, void *buffer, fsdata datablock; fsdata *mydata = &datablock; int cursect; - int root_cluster, ret = -1, name_len; + int ret = -1, name_len; char l_filename[VFAT_MAXLEN_BYTES]; int write_size = size; @@ -947,9 +939,7 @@ static int do_fat_write(const char *filename, void *buffer, total_sector = bs.total_sect; if (total_sector == 0) - total_sector = part_size; - - root_cluster = bs.root_cluster; + total_sector = cur_part_info.size; if (mydata->fatsize == 32) mydata->fatlength = bs.fat32_length; @@ -1051,8 +1041,6 @@ static int do_fat_write(const char *filename, void *buffer, goto exit; } } else { - slotptr = (dir_slot *)empty_dentptr; - /* Set short name to set alias checksum field in dir_slot */ set_name(empty_dentptr, filename); fill_dir_slot(mydata, &empty_dentptr, filename); |