| 141,6 → 141,7 |
|---|
| unsigned last = IPC_GET_ARG2(*request); |
| int dev_handle = IPC_GET_ARG3(*request); |
| int lflag = IPC_GET_ARG4(*request); |
| int index = IPC_GET_ARG5(*request); /* when L_LINK specified */ |
| |
| if (last < next) |
| last += PLB_SIZE; |
| 180,21 → 181,34 |
|---|
| |
| /* handle miss: match amongst siblings */ |
| if (!tmp) { |
| if ((next > last) && (lflag & L_CREATE)) { |
| /* no components left and L_CREATE specified */ |
| if (next <= last) { |
| /* there are unprocessed components */ |
| ipc_answer_0(rid, ENOENT); |
| return; |
| } |
| /* miss in the last component */ |
| if (lflag & (L_CREATE | L_LINK)) { |
| /* request to create a new link */ |
| if (!ops->is_directory(cur)) { |
| ipc_answer_0(rid, ENOTDIR); |
| return; |
| } |
| void *nodep = ops->create(lflag); |
| } |
| void *nodep; |
| if (lflag & L_CREATE) |
| nodep = ops->create(lflag); |
| else |
| nodep = ops->node_get(fs_handle, |
| dev_handle, index); |
| if (nodep) { |
| if (!ops->link(cur, nodep, component)) { |
| ops->destroy(nodep); |
| if (lflag & L_CREATE) |
| ops->destroy(nodep); |
| ipc_answer_0(rid, ENOSPC); |
| } else { |
| ipc_answer_5(rid, EOK, |
| fs_handle, dev_handle, |
| ops->index_get(nodep), 0, |
| ops->index_get(nodep), |
| ops->size_get(nodep), |
| ops->lnkcnt_get(nodep)); |
| } |
| } else { |
| 201,7 → 215,12 |
|---|
| ipc_answer_0(rid, ENOSPC); |
| } |
| return; |
| } |
| } else if (lflag & L_PARENT) { |
| /* return parent */ |
| ipc_answer_5(rid, EOK, fs_handle, dev_handle, |
| ops->index_get(cur), ops->size_get(cur), |
| ops->lnkcnt_get(cur)); |
| } |
| ipc_answer_0(rid, ENOENT); |
| return; |
| } |
| 214,7 → 233,7 |
|---|
| |
| /* handle miss: excessive components */ |
| if (!tmp && next <= last) { |
| if (lflag & L_CREATE) { |
| if (lflag & (L_CREATE | L_LINK)) { |
| if (!ops->is_directory(cur)) { |
| ipc_answer_0(rid, ENOTDIR); |
| return; |
| 239,15 → 258,22 |
|---|
| component[len] = '\0'; |
| len = 0; |
| |
| void *nodep = ops->create(lflag); |
| void *nodep; |
| if (lflag & L_CREATE) |
| nodep = ops->create(lflag); |
| else |
| nodep = ops->node_get(fs_handle, dev_handle, |
| index); |
| if (nodep) { |
| if (!ops->link(cur, nodep, component)) { |
| ops->destroy(nodep); |
| if (lflag & L_CREATE) |
| ops->destroy(nodep); |
| ipc_answer_0(rid, ENOSPC); |
| } else { |
| ipc_answer_5(rid, EOK, |
| fs_handle, dev_handle, |
| ops->index_get(nodep), 0, |
| ops->index_get(nodep), |
| ops->size_get(nodep), |
| ops->lnkcnt_get(nodep)); |
| } |
| } else { |
| 260,7 → 286,14 |
|---|
| } |
| |
| /* handle hit */ |
| if (lflag & L_DESTROY) { |
| if (lflag & L_PARENT) { |
| cur = par; |
| if (!cur) { |
| ipc_answer_0(rid, ENOENT); |
| return; |
| } |
| } |
| if (lflag & L_UNLINK) { |
| unsigned old_lnkcnt = ops->lnkcnt_get(cur); |
| int res = ops->unlink(par, cur); |
| ipc_answer_5(rid, (ipcarg_t)res, fs_handle, dev_handle, |
| 267,7 → 300,8 |
|---|
| ops->index_get(cur), ops->size_get(cur), old_lnkcnt); |
| return; |
| } |
| if ((lflag & (L_CREATE | L_EXCLUSIVE)) == (L_CREATE | L_EXCLUSIVE)) { |
| if (((lflag & (L_CREATE | L_EXCLUSIVE)) == (L_CREATE | L_EXCLUSIVE)) || |
| (lflag & L_LINK)) { |
| ipc_answer_0(rid, EEXIST); |
| return; |
| } |