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Rev 3022 | Rev 4055 | ||
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Line 38... | Line 38... | ||
38 | #include <futex.h> |
38 | #include <futex.h> |
39 | #include <rwlock.h> |
39 | #include <rwlock.h> |
40 | #include <sys/types.h> |
40 | #include <sys/types.h> |
41 | #include <bool.h> |
41 | #include <bool.h> |
42 | 42 | ||
- | 43 | // FIXME: according to CONFIG_DEBUG |
|
43 | #define dprintf(...) printf(__VA_ARGS__) |
44 | // #define dprintf(...) printf(__VA_ARGS__) |
44 | 45 | ||
45 | #define VFS_FIRST IPC_FIRST_USER_METHOD |
46 | #define dprintf(...) |
46 | 47 | ||
47 | #define IPC_METHOD_TO_VFS_OP(m) ((m) - VFS_FIRST) |
48 | #define VFS_FIRST IPC_FIRST_USER_METHOD |
48 | 49 | ||
49 | /* Basic types. */ |
50 | /* Basic types. */ |
50 | typedef int16_t fs_handle_t; |
51 | typedef int16_t fs_handle_t; |
51 | typedef int16_t dev_handle_t; |
52 | typedef int16_t dev_handle_t; |
52 | typedef uint32_t fs_index_t; |
53 | typedef uint32_t fs_index_t; |
Line 60... | Line 61... | ||
60 | VFS_LAST_CMN, /* keep this the last member of this enum */ |
61 | VFS_LAST_CMN, /* keep this the last member of this enum */ |
61 | } vfs_request_cmn_t; |
62 | } vfs_request_cmn_t; |
62 | 63 | ||
63 | typedef enum { |
64 | typedef enum { |
64 | VFS_LOOKUP = VFS_LAST_CMN, |
65 | VFS_LOOKUP = VFS_LAST_CMN, |
- | 66 | VFS_MOUNTED, |
|
65 | VFS_DESTROY, |
67 | VFS_DESTROY, |
66 | VFS_LAST_CLNT, /* keep this the last member of this enum */ |
68 | VFS_LAST_CLNT, /* keep this the last member of this enum */ |
67 | } vfs_request_clnt_t; |
69 | } vfs_request_clnt_t; |
68 | 70 | ||
69 | typedef enum { |
71 | typedef enum { |
Line 75... | Line 77... | ||
75 | VFS_UNLINK, |
77 | VFS_UNLINK, |
76 | VFS_RENAME, |
78 | VFS_RENAME, |
77 | VFS_LAST_SRV, /* keep this the last member of this enum */ |
79 | VFS_LAST_SRV, /* keep this the last member of this enum */ |
78 | } vfs_request_srv_t; |
80 | } vfs_request_srv_t; |
79 | 81 | ||
80 | - | ||
81 | /** |
- | |
82 | * An instance of this structure is associated with a particular FS operation. |
- | |
83 | * It tells VFS if the FS supports the operation or maybe if a default one |
- | |
84 | * should be used. |
- | |
85 | */ |
- | |
86 | typedef enum { |
- | |
87 | VFS_OP_NULL = 0, |
- | |
88 | VFS_OP_DEFAULT, |
- | |
89 | VFS_OP_DEFINED |
- | |
90 | } vfs_op_t; |
- | |
91 | - | ||
92 | #define FS_NAME_MAXLEN 20 |
82 | #define FS_NAME_MAXLEN 20 |
93 | 83 | ||
94 | /** |
84 | /** |
95 | * A structure like this is passed to VFS by each individual FS upon its |
85 | * A structure like this is passed to VFS by each individual FS upon its |
96 | * registration. It assosiates a human-readable identifier with each |
86 | * registration. It assosiates a human-readable identifier with each |
97 | * registered FS. More importantly, through this structure, the FS announces |
- | |
98 | * what operations it supports. |
87 | * registered FS. |
99 | */ |
88 | */ |
100 | typedef struct { |
89 | typedef struct { |
101 | /** Unique identifier of the fs. */ |
90 | /** Unique identifier of the fs. */ |
102 | char name[FS_NAME_MAXLEN + 1]; |
91 | char name[FS_NAME_MAXLEN + 1]; |
103 | - | ||
104 | /** Operations. */ |
- | |
105 | vfs_op_t ops[VFS_LAST_CLNT - VFS_FIRST]; |
- | |
106 | } vfs_info_t; |
92 | } vfs_info_t; |
107 | 93 | ||
108 | /** |
94 | /** |
109 | * A structure like this will be allocated for each registered file system. |
95 | * A structure like this will be allocated for each registered file system. |
110 | */ |
96 | */ |
Line 184... | Line 170... | ||
184 | * L_PARENT performs a lookup but returns the triplet of the parent node. |
170 | * L_PARENT performs a lookup but returns the triplet of the parent node. |
185 | * This flag may not be combined with any other lookup flag. |
171 | * This flag may not be combined with any other lookup flag. |
186 | */ |
172 | */ |
187 | #define L_PARENT 64 |
173 | #define L_PARENT 64 |
188 | 174 | ||
- | 175 | typedef enum vfs_node_type { |
|
- | 176 | VFS_NODE_UNKNOWN, |
|
- | 177 | VFS_NODE_FILE, |
|
- | 178 | VFS_NODE_DIRECTORY, |
|
- | 179 | } vfs_node_type_t; |
|
- | 180 | ||
189 | typedef struct { |
181 | typedef struct { |
190 | vfs_triplet_t triplet; |
182 | vfs_triplet_t triplet; |
- | 183 | vfs_node_type_t type; |
|
191 | size_t size; |
184 | size_t size; |
192 | unsigned lnkcnt; |
185 | unsigned lnkcnt; |
193 | } vfs_lookup_res_t; |
186 | } vfs_lookup_res_t; |
194 | 187 | ||
195 | /** |
188 | /** |
Line 207... | Line 200... | ||
207 | 200 | ||
208 | /** Number of names this node has in the file system namespace. */ |
201 | /** Number of names this node has in the file system namespace. */ |
209 | unsigned lnkcnt; |
202 | unsigned lnkcnt; |
210 | 203 | ||
211 | link_t nh_link; /**< Node hash-table link. */ |
204 | link_t nh_link; /**< Node hash-table link. */ |
- | 205 | ||
- | 206 | vfs_node_type_t type; /**< Partial info about the node type. */ |
|
- | 207 | ||
212 | size_t size; /**< Cached size if the node is a file. */ |
208 | size_t size; /**< Cached size if the node is a file. */ |
213 | 209 | ||
214 | /** |
210 | /** |
215 | * Holding this rwlock prevents modifications of the node's contents. |
211 | * Holding this rwlock prevents modifications of the node's contents. |
216 | */ |
212 | */ |
Line 239... | Line 235... | ||
239 | 235 | ||
240 | extern futex_t nodes_futex; |
236 | extern futex_t nodes_futex; |
241 | 237 | ||
242 | extern link_t fs_head; /**< List of registered file systems. */ |
238 | extern link_t fs_head; /**< List of registered file systems. */ |
243 | 239 | ||
244 | extern vfs_triplet_t rootfs; /**< Root node of the root file system. */ |
240 | extern vfs_pair_t rootfs; /**< Root file system. */ |
245 | 241 | ||
246 | #define MAX_PATH_LEN (64 * 1024) |
242 | #define MAX_PATH_LEN (64 * 1024) |
247 | 243 | ||
248 | #define PLB_SIZE (2 * MAX_PATH_LEN) |
244 | #define PLB_SIZE (2 * MAX_PATH_LEN) |
249 | 245 | ||
Line 276... | Line 272... | ||
276 | #define MAX_OPEN_FILES 128 |
272 | #define MAX_OPEN_FILES 128 |
277 | 273 | ||
278 | extern bool vfs_files_init(void); |
274 | extern bool vfs_files_init(void); |
279 | extern vfs_file_t *vfs_file_get(int); |
275 | extern vfs_file_t *vfs_file_get(int); |
280 | extern int vfs_fd_alloc(void); |
276 | extern int vfs_fd_alloc(void); |
281 | extern void vfs_fd_free(int); |
277 | extern int vfs_fd_free(int); |
282 | 278 | ||
283 | extern void vfs_file_addref(vfs_file_t *); |
279 | extern void vfs_file_addref(vfs_file_t *); |
284 | extern void vfs_file_delref(vfs_file_t *); |
280 | extern void vfs_file_delref(vfs_file_t *); |
285 | 281 | ||
286 | extern void vfs_node_addref(vfs_node_t *); |
282 | extern void vfs_node_addref(vfs_node_t *); |
287 | extern void vfs_node_delref(vfs_node_t *); |
283 | extern void vfs_node_delref(vfs_node_t *); |
288 | 284 | ||
- | 285 | extern void vfs_process_pending_mount(void); |
|
289 | extern void vfs_register(ipc_callid_t, ipc_call_t *); |
286 | extern void vfs_register(ipc_callid_t, ipc_call_t *); |
290 | extern void vfs_mount(ipc_callid_t, ipc_call_t *); |
287 | extern void vfs_mount(ipc_callid_t, ipc_call_t *); |
291 | extern void vfs_open(ipc_callid_t, ipc_call_t *); |
288 | extern void vfs_open(ipc_callid_t, ipc_call_t *); |
292 | extern void vfs_close(ipc_callid_t, ipc_call_t *); |
289 | extern void vfs_close(ipc_callid_t, ipc_call_t *); |
293 | extern void vfs_read(ipc_callid_t, ipc_call_t *); |
290 | extern void vfs_read(ipc_callid_t, ipc_call_t *); |