| 368,7 → 368,7 |
|---|
| ipc_answer_1(rid, EOK, 0); |
| return; |
| } |
| /* Clear any newly allocated memory in order to emulate gaps. */ |
| /* Clear any newly allocated memory in order to emulate gaps. */ |
| memset(newdata + dentry->size, 0, delta); |
| dentry->size += delta; |
| dentry->data = newdata; |
| 376,6 → 376,43 |
|---|
| ipc_answer_2(rid, EOK, len, dentry->size); |
| } |
| |
| void tmpfs_truncate(ipc_callid_t rid, ipc_call_t *request) |
| { |
| int dev_handle = IPC_GET_ARG1(*request); |
| unsigned long index = IPC_GET_ARG2(*request); |
| size_t size = IPC_GET_ARG3(*request); |
| |
| /* |
| * Lookup the respective dentry. |
| */ |
| link_t *hlp; |
| hlp = hash_table_find(&dentries, &index); |
| if (!hlp) { |
| ipc_answer_0(rid, ENOENT); |
| return; |
| } |
| tmpfs_dentry_t *dentry = hash_table_get_instance(hlp, tmpfs_dentry_t, |
| dh_link); |
| |
| if (size == dentry->size) { |
| ipc_answer_0(rid, EOK); |
| return; |
| } |
| |
| void *newdata = realloc(dentry->data, size); |
| if (!newdata) { |
| ipc_answer_0(rid, ENOMEM); |
| return; |
| } |
| if (size > dentry->size) { |
| size_t delta = size - dentry->size; |
| memset(newdata + dentry->size, 0, delta); |
| } |
| dentry->size = size; |
| dentry->data = newdata; |
| ipc_answer_0(rid, EOK); |
| } |
| |
| /** |
| * @} |
| */ |