0,0 → 1,147 |
/* |
* Copyright (c) 2009 Martin Decky |
* 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 libcipc |
* @{ |
*/ |
/** @file |
*/ |
|
#ifndef LIBC_IPC_VFS_H_ |
#define LIBC_IPC_VFS_H_ |
|
#include <sys/types.h> |
#include <ipc/ipc.h> |
|
#define FS_NAME_MAXLEN 20 |
#define MAX_PATH_LEN (64 * 1024) |
#define PLB_SIZE (2 * MAX_PATH_LEN) |
|
/* Basic types. */ |
typedef int16_t fs_handle_t; |
typedef uint32_t fs_index_t; |
|
/** |
* A structure like this is passed to VFS by each individual FS upon its |
* registration. It assosiates a human-readable identifier with each |
* registered FS. |
*/ |
typedef struct { |
/** Unique identifier of the fs. */ |
char name[FS_NAME_MAXLEN + 1]; |
} vfs_info_t; |
|
typedef enum { |
VFS_OPEN_NODE = IPC_FIRST_USER_METHOD, |
VFS_READ, |
VFS_WRITE, |
VFS_TRUNCATE, |
VFS_MOUNT, |
VFS_UNMOUNT, |
VFS_DEVICE, |
VFS_SYNC, |
VFS_CLOSE, |
VFS_LAST_CMN /* keep this the last member of this enum */ |
} vfs_request_cmn_t; |
|
typedef enum { |
VFS_LOOKUP = VFS_LAST_CMN, |
VFS_MOUNTED, |
VFS_DESTROY, |
VFS_LAST_CLNT /* keep this the last member of this enum */ |
} vfs_request_clnt_t; |
|
typedef enum { |
VFS_REGISTER = VFS_LAST_CMN, |
VFS_OPEN, |
VFS_SEEK, |
VFS_MKDIR, |
VFS_UNLINK, |
VFS_RENAME, |
VFS_NODE, |
VFS_LAST_SRV /* keep this the last member of this enum */ |
} vfs_request_srv_t; |
|
/* |
* Lookup flags. |
*/ |
|
/** |
* No lookup flags used. |
*/ |
#define L_NONE 0 |
|
/** |
* Lookup will succeed only if the object is a regular file. If L_CREATE is |
* specified, an empty file will be created. This flag is mutually exclusive |
* with L_DIRECTORY. |
*/ |
#define L_FILE 1 |
|
/** |
* Lookup wil succeed only if the object is a directory. If L_CREATE is |
* specified, an empty directory will be created. This flag is mutually |
* exclusive with L_FILE. |
*/ |
#define L_DIRECTORY 2 |
|
/** |
* When used with L_CREATE, L_EXCLUSIVE will cause the lookup to fail if the |
* object already exists. L_EXCLUSIVE is implied when L_DIRECTORY is used. |
*/ |
#define L_EXCLUSIVE 4 |
|
/** |
* L_CREATE is used for creating both regular files and directories. |
*/ |
#define L_CREATE 8 |
|
/** |
* L_LINK is used for linking to an already existing nodes. |
*/ |
#define L_LINK 16 |
|
/** |
* L_UNLINK is used to remove leaves from the file system namespace. This flag |
* cannot be passed directly by the client, but will be set by VFS during |
* VFS_UNLINK. |
*/ |
#define L_UNLINK 32 |
|
/** |
* L_OPEN is used to indicate that the lookup operation is a part of VFS_OPEN |
* call from the client. This means that the server might allocate some |
* resources for the opened file. This flag cannot be passed directly by the |
* client. |
*/ |
#define L_OPEN 64 |
|
#endif |
|
/** @} |
*/ |