| /trunk/uspace/srv/vfs/vfs_open.c |
|---|
| 31,7 → 31,7 |
| */ |
| /** |
| * @file vfs.c |
| * @file vfs_open.c |
| * @brief VFS_OPEN method. |
| */ |
| 66,6 → 66,14 |
| /** Initialize the table of open files. */ |
| static bool vfs_conn_open_files_init(void) |
| { |
| /* |
| * Optimized fast path that will never go to sleep unnecessarily. |
| * The assumption is that once files is non-zero, it will never be zero |
| * again. |
| */ |
| if (files) |
| return true; |
| futex_down(&files_futex); |
| if (!files) { |
| files = malloc(MAX_OPEN_FILES * sizeof(vfs_file_t)); |
| 85,6 → 93,64 |
| ipc_answer_fast_0(rid, ENOMEM); |
| return; |
| } |
| /* |
| * The POSIX interface is open(path, flags, mode). |
| * We can receive flags and mode along with the VFS_OPEN call; the path |
| * will need to arrive in another call. |
| */ |
| int flags = IPC_GET_ARG1(*request); |
| int mode = IPC_GET_ARG2(*request); |
| size_t size; |
| ipc_callid_t callid; |
| ipc_call_t call; |
| if (!ipc_data_receive(&callid, &call, NULL, &size)) { |
| ipc_answer_fast_0(callid, EINVAL); |
| ipc_answer_fast_0(rid, EINVAL); |
| return; |
| } |
| /* |
| * Now we are on the verge of accepting the path. |
| * |
| * There is one optimization we could do in the future: copy the path |
| * directly into the PLB using some kind of a callback. |
| */ |
| char *path = malloc(size); |
| if (!path) { |
| ipc_answer_fast_0(callid, ENOMEM); |
| ipc_answer_fast_0(rid, ENOMEM); |
| return; |
| } |
| int rc; |
| if (rc = ipc_data_deliver(callid, &call, path, size)) { |
| ipc_answer_fast_0(rid, rc); |
| free(path); |
| return; |
| } |
| /* |
| * The path is now populated and we can call vfs_lookup_internal(). |
| */ |
| vfs_triplet_t triplet; |
| rc = vfs_lookup_internal(path, size, &triplet, NULL); |
| if (rc) { |
| ipc_answer_fast_0(rid, rc); |
| free(path); |
| return; |
| } |
| /* |
| * Path is no longer needed. |
| */ |
| free(path); |
| vfs_node_t *node = vfs_node_get(&triplet); |
| // TODO: not finished |
| } |
| /** |
| /trunk/uspace/srv/vfs/vfs_mount.c |
|---|
| 31,7 → 31,7 |
| */ |
| /** |
| * @file vfs.c |
| * @file vfs_mount.c |
| * @brief VFS_MOUNT method. |
| */ |
| /trunk/uspace/srv/vfs/vfs_register.c |
|---|
| 31,7 → 31,7 |
| */ |
| /** |
| * @file vfs.c |
| * @file vfs_register.c |
| * @brief VFS_REGISTER method. |
| */ |
| /trunk/uspace/srv/vfs/vfs.h |
|---|
| 172,6 → 172,7 |
| extern int fs_name_to_handle(char *, bool); |
| extern int vfs_lookup_internal(char *, size_t, vfs_triplet_t *, vfs_pair_t *); |
| extern vfs_node_t *vfs_node_get(vfs_triplet_t *); |
| #define MAX_OPEN_FILES 128 |
| /trunk/uspace/srv/vfs/vfs_node.c |
|---|
| 0,0 → 1,47 |
| /* |
| * Copyright (c) 2007 Jakub Jermar |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * - Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * - Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * - The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| /** @addtogroup fs |
| * @{ |
| */ |
| /** |
| * @file vfs_node.c |
| * @brief Various operations on VFS nodes have their home in this file. |
| */ |
| #include "vfs.h" |
| vfs_node_t *vfs_node_get(vfs_triplet_t *triplet) |
| { |
| return NULL; // TODO: not implemented |
| } |
| /** |
| * @} |
| */ |
| /trunk/uspace/srv/vfs/vfs_lookup.c |
|---|
| 31,7 → 31,7 |
| */ |
| /** |
| * @file vfs.c |
| * @file vfs_lookup.c |
| * @brief VFS_LOOKUP method and Path Lookup Buffer code. |
| */ |
| /trunk/uspace/srv/vfs/Makefile |
|---|
| 42,6 → 42,7 |
| OUTPUT = vfs |
| SOURCES = \ |
| vfs.c \ |
| vfs_node.c \ |
| vfs_register.c \ |
| vfs_lookup.c \ |
| vfs_mount.c \ |