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Added some checks that metadata_max makes sense

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Like the read/prog/block_size checks, these are just asserts. If these
invariants are broken the filesystem will break in surprising ways.
This commit is contained in:
Christopher Haster
2024-10-04 13:29:03 -05:00
parent 2d62d2f4c9
commit ea431bd6ae
1 changed files with 9 additions and 0 deletions
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9
lfs.c
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@ -4210,6 +4210,15 @@ static int lfs_init(lfs_t *lfs, const struct lfs_config *cfg) {
LFS_ASSERT(lfs->cfg->compact_thresh == (lfs_size_t)-1
|| lfs->cfg->compact_thresh <= lfs->cfg->block_size);
// check that metadata_max is a multiple of read_size and prog_size,
// and a factor of the block_size
LFS_ASSERT(!lfs->cfg->metadata_max
|| lfs->cfg->metadata_max % lfs->cfg->read_size == 0);
LFS_ASSERT(!lfs->cfg->metadata_max
|| lfs->cfg->metadata_max % lfs->cfg->prog_size == 0);
LFS_ASSERT(!lfs->cfg->metadata_max
|| lfs->cfg->block_size % lfs->cfg->metadata_max == 0);
// setup read cache
if (lfs->cfg->read_buffer) {
lfs->rcache.buffer = lfs->cfg->read_buffer;