| 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; |