FreeBSD/Linux Kernel Cross Reference
sys/sys/kobj_impl.h
1 /* $NetBSD: kobj_impl.h,v 1.5 2016/07/20 13:36:19 maxv Exp $ */
2
3 /*-
4 * Copyright (c) 2008, 2009 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software developed for The NetBSD Foundation
8 * by Andrew Doran.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 /*-
33 * Copyright (c) 1998-2000 Doug Rabson
34 * Copyright (c) 2004 Peter Wemm
35 * All rights reserved.
36 *
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions
39 * are met:
40 * 1. Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * 2. Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in the
44 * documentation and/or other materials provided with the distribution.
45 *
46 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
47 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
48 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
49 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
50 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
51 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
52 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
53 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
54 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
55 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
56 * SUCH DAMAGE.
57 */
58
59 /*
60 * Data structures private to kobj, shared only with kernel grovellers.
61 */
62
63 #ifndef _SYS_KOBJ_IMPL_H_
64 #define _SYS_KOBJ_IMPL_H_
65
66 #define ELFSIZE ARCH_ELFSIZE
67
68 #include <sys/systm.h>
69 #include <sys/kobj.h>
70 #include <sys/exec.h>
71 #include <sys/exec_elf.h>
72 #include <sys/module.h>
73
74 typedef struct {
75 void *addr;
76 Elf_Off size;
77 int flags;
78 int sec; /* Original section */
79 const char *name;
80 } progent_t;
81
82 typedef struct {
83 Elf_Rel *rel;
84 int nrel;
85 int sec;
86 size_t size;
87 } relent_t;
88
89 typedef struct {
90 Elf_Rela *rela;
91 int nrela;
92 int sec;
93 size_t size;
94 } relaent_t;
95
96 typedef enum kobjtype {
97 KT_UNSET,
98 KT_VNODE,
99 KT_MEMORY
100 } kobjtype_t;
101
102 typedef int (*kobj_read_fn)(kobj_t, void **, size_t, off_t, bool);
103 typedef void (*kobj_close_fn)(kobj_t);
104
105 struct kobj {
106 char ko_name[MAXMODNAME];
107 kobjtype_t ko_type;
108 void *ko_source;
109 ssize_t ko_memsize;
110 vaddr_t ko_text_address; /* Address of text segment */
111 vaddr_t ko_data_address; /* Address of data segment */
112 vaddr_t ko_rodata_address; /* Address of rodata segment */
113 Elf_Shdr *ko_shdr;
114 progent_t *ko_progtab;
115 relaent_t *ko_relatab;
116 relent_t *ko_reltab;
117 Elf_Sym *ko_symtab; /* Symbol table */
118 char *ko_strtab; /* String table */
119 char *ko_shstrtab; /* Section name string table */
120 size_t ko_text_size; /* Size of text segment */
121 size_t ko_data_size; /* Size of data/bss segment */
122 size_t ko_rodata_size; /* Size of rodata segment */
123 size_t ko_symcnt; /* Number of symbols */
124 size_t ko_strtabsz; /* Number of bytes in string table */
125 size_t ko_shstrtabsz; /* Number of bytes in scn str table */
126 size_t ko_shdrsz;
127 int ko_nrel;
128 int ko_nrela;
129 int ko_nprogtab;
130 bool ko_ksyms;
131 bool ko_loaded;
132 kobj_read_fn ko_read;
133 kobj_close_fn ko_close;
134 };
135
136 #ifdef _KERNEL
137 int kobj_load(kobj_t);
138 void kobj_setname(kobj_t, const char *);
139 #endif
140
141 #endif /* _SYS_KOBJ_IMPL_H_ */
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