WebSVN – HelenOS – Diff – /branches/dynload/uspace/srv/fs/tmpfs/tmpfs.h


/*
 * Copyright (c) 2008 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
 * @{
 */
 
#ifndef TMPFS_TMPFS_H_
#define TMPFS_TMPFS_H_
 
#include <ipc/ipc.h>
#include <libfs.h>
#include <atomic.h>
#include <sys/types.h>
#include <bool.h>
#include <libadt/hash_table.h>
 
#ifndef dprintf
#define dprintf(...)    printf(__VA_ARGS__)
#endif
 
#define TMPFS_NODE(node)    ((node) ? (tmpfs_node_t *)(node)->data : NULL)
#define FS_NODE(node)       ((node) ? (node)->bp : NULL)
 
typedef enum {
    TMPFS_NONE,
    TMPFS_FILE,
    TMPFS_DIRECTORY
} tmpfs_dentry_type_t;
 
/* forward declaration */
struct tmpfs_node;
 
typedef struct tmpfs_dentry {
    link_t link;        /**< Linkage for the list of siblings. */
    struct tmpfs_node *node;/**< Back pointer to TMPFS node. */
    char *name;     /**< Name of dentry. */
} tmpfs_dentry_t;
 
typedef struct tmpfs_node {
    fs_node_t *bp;      /**< Back pointer to the FS node. */
    fs_index_t index;   /**< TMPFS node index. */
    dev_handle_t dev_handle;/**< Device handle. */
    link_t nh_link;     /**< Nodes hash table link. */
 
 
 
    tmpfs_dentry_type_t type;
    unsigned lnkcnt;    /**< Link count. */
    size_t size;        /**< File size if type is TMPFS_FILE. */
    void *data;     /**< File content's if type is TMPFS_FILE. */
    link_t cs_head;     /**< Head of child's siblings list. */
} tmpfs_node_t;
 
extern fs_reg_t tmpfs_reg;
 
extern libfs_ops_t tmpfs_libfs_ops;
 
extern bool tmpfs_init(void);
 
extern void tmpfs_mounted(ipc_callid_t, ipc_call_t *);
extern void tmpfs_mount(ipc_callid_t, ipc_call_t *);
extern void tmpfs_lookup(ipc_callid_t, ipc_call_t *);
extern void tmpfs_read(ipc_callid_t, ipc_call_t *);
extern void tmpfs_write(ipc_callid_t, ipc_call_t *);
extern void tmpfs_truncate(ipc_callid_t, ipc_call_t *);
extern void tmpfs_destroy(ipc_callid_t, ipc_call_t *);
 
extern bool tmpfs_restore(dev_handle_t);
 
#endif
 
/**
 * @}
 */
 

Rev 4348	Rev 4389
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

Subversion Repositories HelenOS

(root)/branches/dynload/uspace/srv/fs/tmpfs/tmpfs.h – Rev 4348 → 4389