| 234,61 → 234,22 |
|---|
| static void fat_node_put(void *node) |
| { |
| fat_node_t *nodep = (fat_node_t *)node; |
| bool destroy = false; |
| |
| futex_down(&nodep->lock); |
| if (!--nodep->refcnt) { |
| if (nodep->idx) { |
| futex_down(&ffn_futex); |
| list_append(&nodep->ffn_link, &ffn_head); |
| futex_up(&ffn_futex); |
| } else { |
| /* |
| * The node does not have any index structure associated |
| * with itself. This can only mean that we are releasing |
| * the node after a failed attempt to allocate the index |
| * structure for it. |
| */ |
| destroy = true; |
| } |
| futex_down(&ffn_futex); |
| list_append(&nodep->ffn_link, &ffn_head); |
| futex_up(&ffn_futex); |
| } |
| futex_up(&nodep->lock); |
| if (destroy) |
| free(node); |
| } |
| |
| static void *fat_create_node(dev_handle_t dev_handle, int flags) |
| static void *fat_create(dev_handle_t dev_handle, int flags) |
| { |
| fat_idx_t *idxp; |
| fat_node_t *nodep; |
| |
| nodep = fat_node_get_new(); |
| if (!nodep) |
| return NULL; |
| idxp = fat_idx_get_new(dev_handle); |
| if (!idxp) { |
| fat_node_put(nodep); |
| return NULL; |
| } |
| /* idxp->lock held */ |
| if (flags & L_DIRECTORY) { |
| nodep->type = FAT_DIRECTORY; |
| } else { |
| nodep->type = FAT_FILE; |
| } |
| nodep->size = 0; |
| nodep->firstc = FAT_CLST_RES0; |
| nodep->lnkcnt = 0; /* not linked anywhere */ |
| nodep->refcnt = 1; |
| |
| nodep->idx = idxp; |
| idxp->nodep = nodep; |
| |
| futex_up(&idxp->lock); |
| return nodep; |
| return NULL; /* not supported at the moment */ |
| } |
| |
| static int fat_destroy_node(void *node) |
| static int fat_destroy(void *node) |
| { |
| return ENOTSUP; /* not supported at the moment */ |
| } |
| 463,8 → 424,8 |
|---|
| .match = fat_match, |
| .node_get = fat_node_get, |
| .node_put = fat_node_put, |
| .create = fat_create_node, |
| .destroy = fat_destroy_node, |
| .create = fat_create, |
| .destroy = fat_destroy, |
| .link = fat_link, |
| .unlink = fat_unlink, |
| .index_get = fat_index_get, |