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2645 | jermar | 1 | /* |
2693 | jermar | 2 | * Copyright (c) 2008 Jakub Jermar |
2645 | jermar | 3 | * All rights reserved. |
4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions |
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7 | * are met: |
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8 | * |
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9 | * - Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * - Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * - The name of the author may not be used to endorse or promote products |
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15 | * derived from this software without specific prior written permission. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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27 | */ |
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28 | |||
29 | /** @addtogroup fs |
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30 | * @{ |
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31 | */ |
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32 | |||
33 | #ifndef TMPFS_TMPFS_H_ |
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34 | #define TMPFS_TMPFS_H_ |
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35 | |||
36 | #include <ipc/ipc.h> |
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37 | #include <libfs.h> |
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38 | #include <atomic.h> |
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39 | #include <sys/types.h> |
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40 | #include <bool.h> |
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4509 | decky | 41 | #include <adt/hash_table.h> |
2645 | jermar | 42 | |
3109 | jermar | 43 | #ifndef dprintf |
2645 | jermar | 44 | #define dprintf(...) printf(__VA_ARGS__) |
3109 | jermar | 45 | #endif |
2645 | jermar | 46 | |
4370 | jermar | 47 | #define TMPFS_NODE(node) ((node) ? (tmpfs_node_t *)(node)->data : NULL) |
4357 | jermar | 48 | #define FS_NODE(node) ((node) ? (node)->bp : NULL) |
49 | |||
3247 | jermar | 50 | typedef enum { |
51 | TMPFS_NONE, |
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52 | TMPFS_FILE, |
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53 | TMPFS_DIRECTORY |
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54 | } tmpfs_dentry_type_t; |
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55 | |||
4370 | jermar | 56 | /* forward declaration */ |
57 | struct tmpfs_node; |
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58 | |||
2645 | jermar | 59 | typedef struct tmpfs_dentry { |
4370 | jermar | 60 | link_t link; /**< Linkage for the list of siblings. */ |
61 | struct tmpfs_node *node;/**< Back pointer to TMPFS node. */ |
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62 | char *name; /**< Name of dentry. */ |
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63 | } tmpfs_dentry_t; |
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64 | |||
65 | typedef struct tmpfs_node { |
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4357 | jermar | 66 | fs_node_t *bp; /**< Back pointer to the FS node. */ |
2770 | jermar | 67 | fs_index_t index; /**< TMPFS node index. */ |
4306 | jermar | 68 | dev_handle_t dev_handle;/**< Device handle. */ |
4370 | jermar | 69 | link_t nh_link; /**< Nodes hash table link. */ |
3247 | jermar | 70 | tmpfs_dentry_type_t type; |
2756 | jermar | 71 | unsigned lnkcnt; /**< Link count. */ |
2655 | jermar | 72 | size_t size; /**< File size if type is TMPFS_FILE. */ |
73 | void *data; /**< File content's if type is TMPFS_FILE. */ |
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4370 | jermar | 74 | link_t cs_head; /**< Head of child's siblings list. */ |
75 | } tmpfs_node_t; |
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2645 | jermar | 76 | |
77 | extern fs_reg_t tmpfs_reg; |
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78 | |||
3103 | jermar | 79 | extern libfs_ops_t tmpfs_libfs_ops; |
80 | |||
4306 | jermar | 81 | extern bool tmpfs_init(void); |
82 | |||
3109 | jermar | 83 | extern void tmpfs_mounted(ipc_callid_t, ipc_call_t *); |
2958 | jermar | 84 | extern void tmpfs_mount(ipc_callid_t, ipc_call_t *); |
2645 | jermar | 85 | extern void tmpfs_lookup(ipc_callid_t, ipc_call_t *); |
2658 | jermar | 86 | extern void tmpfs_read(ipc_callid_t, ipc_call_t *); |
2666 | jermar | 87 | extern void tmpfs_write(ipc_callid_t, ipc_call_t *); |
2693 | jermar | 88 | extern void tmpfs_truncate(ipc_callid_t, ipc_call_t *); |
4465 | decky | 89 | extern void tmpfs_close(ipc_callid_t, ipc_call_t *); |
2742 | jermar | 90 | extern void tmpfs_destroy(ipc_callid_t, ipc_call_t *); |
4465 | decky | 91 | extern void tmpfs_open_node(ipc_callid_t, ipc_call_t *); |
92 | extern void tmpfs_device(ipc_callid_t, ipc_call_t *); |
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93 | extern void tmpfs_sync(ipc_callid_t, ipc_call_t *); |
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2645 | jermar | 94 | |
3103 | jermar | 95 | extern bool tmpfs_restore(dev_handle_t); |
96 | |||
2645 | jermar | 97 | #endif |
98 | |||
99 | /** |
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100 | * @} |
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101 | */ |