288,25 → 288,60 |
{ |
fat_idx_t *idxp; |
fat_node_t *nodep; |
fat_bs_t *bs; |
fat_cluster_t mcl, lcl; |
uint16_t bps; |
int rc; |
|
bs = block_bb_get(dev_handle); |
bps = uint16_t_le2host(bs->bps); |
if (flags & L_DIRECTORY) { |
/* allocate a cluster */ |
rc = fat_alloc_clusters(bs, dev_handle, 1, &mcl, &lcl); |
if (rc != EOK) |
return NULL; |
} |
|
nodep = fat_node_get_new(); |
if (!nodep) |
if (!nodep) { |
fat_free_clusters(bs, dev_handle, mcl); |
return NULL; |
} |
idxp = fat_idx_get_new(dev_handle); |
if (!idxp) { |
fat_free_clusters(bs, dev_handle, mcl); |
fat_node_put(nodep); |
return NULL; |
} |
/* idxp->lock held */ |
if (flags & L_DIRECTORY) { |
int i; |
block_t *b; |
|
/* |
* Populate the new cluster with unused dentries. |
* We don't create the '.' and '..' entries, since they are |
* optional and HelenOS VFS does not need them. |
*/ |
for (i = 0; i < bs->spc; i++) { |
b = _fat_block_get(bs, dev_handle, mcl, i, |
BLOCK_FLAGS_NOREAD); |
/* mark all dentries as never-used */ |
memset(b->data, 0, bps); |
b->dirty = false; |
block_put(b); |
} |
nodep->type = FAT_DIRECTORY; |
nodep->firstc = mcl; |
nodep->size = bps * bs->spc; |
} else { |
nodep->type = FAT_FILE; |
nodep->firstc = FAT_CLST_RES0; |
nodep->size = 0; |
} |
nodep->size = 0; |
nodep->firstc = FAT_CLST_RES0; |
nodep->lnkcnt = 0; /* not linked anywhere */ |
nodep->refcnt = 1; |
nodep->dirty = true; |
|
nodep->idx = idxp; |
idxp->nodep = nodep; |