xref: /freebsd/lib/libgeom/libgeom.h (revision c98323078dede7579020518ec84cdcb478e5c142)
1 /*-
2  * Copyright (c) 2003 Poul-Henning Kamp
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  * 3. The names of the authors may not be used to endorse or promote
14  *    products derived from this software without specific prior written
15  *    permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  *
29  * $FreeBSD$
30  */
31 #ifndef _LIBGEOM_H_
32 #define _LIBGEOM_H_
33 
34 #include <sys/cdefs.h>
35 
36 #include <sys/queue.h>
37 #include <sys/time.h>
38 
39 #include <geom/geom_ctl.h>
40 
41 __BEGIN_DECLS
42 
43 void geom_stats_close(void);
44 void geom_stats_resync(void);
45 int geom_stats_open(void);
46 void *geom_stats_snapshot_get(void);
47 void geom_stats_snapshot_free(void *arg);
48 void geom_stats_snapshot_timestamp(void *arg, struct timespec *tp);
49 void geom_stats_snapshot_reset(void *arg);
50 struct devstat *geom_stats_snapshot_next(void *arg);
51 
52 char *geom_getxml(void);
53 
54 /* geom_xml2tree.c */
55 
56 /*
57  * These structs are used to build the tree based on the XML.
58  * they're named as the kernel variant without the first '_'.
59  */
60 
61 struct gclass;
62 struct ggeom;
63 struct gconsumer;
64 struct gprovider;
65 
66 LIST_HEAD(gconf, gconfig);
67 
68 struct gident {
69 	void			*lg_id;
70 	void			*lg_ptr;
71 	enum {	ISCLASS,
72 		ISGEOM,
73 		ISPROVIDER,
74 		ISCONSUMER }	lg_what;
75 };
76 
77 struct gmesh {
78 	LIST_HEAD(, gclass)	lg_class;
79 	struct gident		*lg_ident;
80 };
81 
82 struct gconfig {
83 	LIST_ENTRY(gconfig)	lg_config;
84 	char			*lg_name;
85 	char			*lg_val;
86 };
87 
88 struct gclass {
89 	void			*lg_id;
90 	char			*lg_name;
91 	LIST_ENTRY(gclass)	lg_class;
92 	LIST_HEAD(, ggeom)	lg_geom;
93 	struct gconf		lg_config;
94 };
95 
96 struct ggeom {
97 	void			*lg_id;
98 	struct gclass		*lg_class;
99 	char			*lg_name;
100 	u_int			lg_rank;
101 	LIST_ENTRY(ggeom)	lg_geom;
102 	LIST_HEAD(, gconsumer)	lg_consumer;
103 	LIST_HEAD(, gprovider)	lg_provider;
104 	struct gconf		lg_config;
105 };
106 
107 struct gconsumer {
108 	void			*lg_id;
109 	struct ggeom		*lg_geom;
110 	LIST_ENTRY(gconsumer)	lg_consumer;
111 	struct gprovider	*lg_provider;
112 	LIST_ENTRY(gconsumer)	lg_consumers;
113 	char			*lg_mode;
114 	struct gconf		lg_config;
115 };
116 
117 struct gprovider {
118 	void			*lg_id;
119 	char			*lg_name;
120 	struct ggeom		*lg_geom;
121 	LIST_ENTRY(gprovider)	lg_provider;
122 	LIST_HEAD(, gconsumer)	lg_consumers;
123 	char			*lg_mode;
124 	off_t			lg_mediasize;
125 	u_int			lg_sectorsize;
126 	struct gconf		lg_config;
127 };
128 
129 struct gident * geom_lookupid(struct gmesh *gmp, const void *id);
130 int geom_xml2tree(struct gmesh *gmp, char *p);
131 int geom_gettree(struct gmesh *gmp);
132 void geom_deletetree(struct gmesh *gmp);
133 
134 /* geom_ctl.c */
135 
136 struct gctl_req;
137 
138 #ifdef _STDIO_H_			/* limit #include pollution */
139 void gctl_dump(struct gctl_req *req, FILE *f);
140 #endif
141 void gctl_free(struct gctl_req *req);
142 struct gctl_req *gctl_get_handle(void);
143 const char *gctl_issue(struct gctl_req *req);
144 void gctl_ro_param(struct gctl_req *req, const char *name, int len, const void* val);
145 void gctl_rw_param(struct gctl_req *req, const char *name, int len, void* val);
146 
147 __END_DECLS
148 
149 #endif /* _LIBGEOM_H_ */
150