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1 | /* |
1 | /* |
2 | * Copyright (c) 2008 Jakub Jermar |
2 | * Copyright (c) 2008 Jakub Jermar |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
8 | * |
8 | * |
9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
13 | * documentation and/or other materials provided with the distribution. |
14 | * - The name of the author may not be used to endorse or promote products |
14 | * - The name of the author may not be used to endorse or promote products |
15 | * derived from this software without specific prior written permission. |
15 | * derived from this software without specific prior written permission. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
29 | /** @addtogroup fs |
29 | /** @addtogroup fs |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | 32 | ||
33 | #ifndef TMPFS_TMPFS_H_ |
33 | #ifndef TMPFS_TMPFS_H_ |
34 | #define TMPFS_TMPFS_H_ |
34 | #define TMPFS_TMPFS_H_ |
35 | 35 | ||
36 | #include <ipc/ipc.h> |
36 | #include <ipc/ipc.h> |
37 | #include <libfs.h> |
37 | #include <libfs.h> |
38 | #include <atomic.h> |
38 | #include <atomic.h> |
39 | #include <sys/types.h> |
39 | #include <sys/types.h> |
40 | #include <bool.h> |
40 | #include <bool.h> |
41 | #include <libadt/hash_table.h> |
41 | #include <libadt/hash_table.h> |
42 | 42 | ||
43 | #ifndef dprintf |
43 | #ifndef dprintf |
44 | #define dprintf(...) printf(__VA_ARGS__) |
44 | #define dprintf(...) printf(__VA_ARGS__) |
45 | #endif |
45 | #endif |
46 | 46 | ||
- | 47 | #define TMPFS_NODE(node) ((node) ? (tmpfs_node_t *)(node)->data : NULL) |
|
- | 48 | #define FS_NODE(node) ((node) ? (node)->bp : NULL) |
|
- | 49 | ||
47 | typedef enum { |
50 | typedef enum { |
48 | TMPFS_NONE, |
51 | TMPFS_NONE, |
49 | TMPFS_FILE, |
52 | TMPFS_FILE, |
50 | TMPFS_DIRECTORY |
53 | TMPFS_DIRECTORY |
51 | } tmpfs_dentry_type_t; |
54 | } tmpfs_dentry_type_t; |
52 | 55 | ||
- | 56 | /* forward declaration */ |
|
- | 57 | struct tmpfs_node; |
|
- | 58 | ||
53 | typedef struct tmpfs_dentry { |
59 | typedef struct tmpfs_dentry { |
- | 60 | link_t link; /**< Linkage for the list of siblings. */ |
|
- | 61 | struct tmpfs_node *node;/**< Back pointer to TMPFS node. */ |
|
- | 62 | char *name; /**< Name of dentry. */ |
|
- | 63 | } tmpfs_dentry_t; |
|
- | 64 | ||
- | 65 | typedef struct tmpfs_node { |
|
- | 66 | fs_node_t *bp; /**< Back pointer to the FS node. */ |
|
54 | fs_index_t index; /**< TMPFS node index. */ |
67 | fs_index_t index; /**< TMPFS node index. */ |
55 | dev_handle_t dev_handle;/**< Device handle. */ |
68 | dev_handle_t dev_handle;/**< Device handle. */ |
56 | link_t dh_link; /**< Dentries hash table link. */ |
69 | link_t nh_link; /**< Nodes hash table link. */ |
57 | struct tmpfs_dentry *sibling; |
- | |
58 | struct tmpfs_dentry *child; |
- | |
59 | hash_table_t names; /**< All names linking to this TMPFS node. */ |
- | |
60 | tmpfs_dentry_type_t type; |
70 | tmpfs_dentry_type_t type; |
61 | unsigned lnkcnt; /**< Link count. */ |
71 | unsigned lnkcnt; /**< Link count. */ |
62 | size_t size; /**< File size if type is TMPFS_FILE. */ |
72 | size_t size; /**< File size if type is TMPFS_FILE. */ |
63 | void *data; /**< File content's if type is TMPFS_FILE. */ |
73 | void *data; /**< File content's if type is TMPFS_FILE. */ |
- | 74 | link_t cs_head; /**< Head of child's siblings list. */ |
|
64 | } tmpfs_dentry_t; |
75 | } tmpfs_node_t; |
65 | 76 | ||
66 | extern fs_reg_t tmpfs_reg; |
77 | extern fs_reg_t tmpfs_reg; |
67 | 78 | ||
68 | extern libfs_ops_t tmpfs_libfs_ops; |
79 | extern libfs_ops_t tmpfs_libfs_ops; |
69 | 80 | ||
70 | extern bool tmpfs_init(void); |
81 | extern bool tmpfs_init(void); |
71 | 82 | ||
72 | extern void tmpfs_mounted(ipc_callid_t, ipc_call_t *); |
83 | extern void tmpfs_mounted(ipc_callid_t, ipc_call_t *); |
73 | extern void tmpfs_mount(ipc_callid_t, ipc_call_t *); |
84 | extern void tmpfs_mount(ipc_callid_t, ipc_call_t *); |
74 | extern void tmpfs_lookup(ipc_callid_t, ipc_call_t *); |
85 | extern void tmpfs_lookup(ipc_callid_t, ipc_call_t *); |
75 | extern void tmpfs_read(ipc_callid_t, ipc_call_t *); |
86 | extern void tmpfs_read(ipc_callid_t, ipc_call_t *); |
76 | extern void tmpfs_write(ipc_callid_t, ipc_call_t *); |
87 | extern void tmpfs_write(ipc_callid_t, ipc_call_t *); |
77 | extern void tmpfs_truncate(ipc_callid_t, ipc_call_t *); |
88 | extern void tmpfs_truncate(ipc_callid_t, ipc_call_t *); |
78 | extern void tmpfs_destroy(ipc_callid_t, ipc_call_t *); |
89 | extern void tmpfs_destroy(ipc_callid_t, ipc_call_t *); |
79 | 90 | ||
80 | extern bool tmpfs_restore(dev_handle_t); |
91 | extern bool tmpfs_restore(dev_handle_t); |
81 | 92 | ||
82 | #endif |
93 | #endif |
83 | 94 | ||
84 | /** |
95 | /** |
85 | * @} |
96 | * @} |
86 | */ |
97 | */ |
87 | 98 |