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mufs: properly format block allocation bitmap

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This commit is contained in:
S.J.R. van Schaik 2017-06-16 14:21:04 +02:00
parent 3c35521979
commit bcf844aab4
1 changed files with 15 additions and 1 deletions
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16
source/fs/mufs/super.c
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@ -60,11 +60,25 @@ void mufs_unmount(struct mufs *fs)
int mufs_format(struct flash_dev *dev) int mufs_format(struct flash_dev *dev)
{ {
struct mufs fs;
struct mufs_super super; struct mufs_super super;
uint8_t log2_bits_per_block = dev->log2_block_size + ilog2(8);
size_t nbitmap_size;
uint32_t block;
fs.dev = dev;
fs.nblocks = flash_get_capacity(dev) >> dev->log2_block_size;
nbitmap_size = align_up(fs.nblocks, log2_bits_per_block) >>
log2_bits_per_block;
flash_erase(dev, 1, nbitmap_size);
for (block = 0; block < 1 + nbitmap_size; ++block)
mufs_mark_block(&fs, block, 1);
memcpy(super.magic, "mufs", 4); memcpy(super.magic, "mufs", 4);
super.nblocks = flash_get_capacity(dev) >> dev->log2_block_size; super.nblocks = fs.nblocks;
super.root.file_size = 0; super.root.file_size = 0;
super.root.root = 0; super.root.root = 0;