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1 | /** |
2 | * Tool utility functions | |
3 | * | |
4 | * Copyright (c) 2014 Red Hat <pmoore@redhat.com> | |
5 | * Author: Paul Moore <paul@paul-moore.com> | |
6 | */ | |
7 | ||
8 | /* | |
9 | * This library is free software; you can redistribute it and/or modify it | |
10 | * under the terms of version 2.1 of the GNU Lesser General Public License as | |
11 | * published by the Free Software Foundation. | |
12 | * | |
13 | * This library is distributed in the hope that it will be useful, but WITHOUT | |
14 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License | |
16 | * for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU Lesser General Public License | |
19 | * along with this library; if not, see <http://www.gnu.org/licenses>. | |
20 | */ | |
21 | ||
22 | #include <errno.h> | |
23 | #include <stdlib.h> | |
24 | #include <stdio.h> | |
25 | #include <linux/audit.h> | |
26 | ||
27 | #ifndef _BSD_SOURCE | |
28 | #define _BSD_SOURCE | |
29 | #endif | |
30 | #include <endian.h> | |
31 | ||
32 | #include "util.h" | |
33 | ||
34 | /* determine the native architecture */ | |
35 | #if __i386__ | |
36 | #define ARCH_NATIVE AUDIT_ARCH_I386 | |
37 | #elif __x86_64__ | |
38 | #ifdef __ILP32__ | |
39 | #define ARCH_NATIVE AUDIT_ARCH_X86_64 | |
40 | #else | |
41 | #define ARCH_NATIVE AUDIT_ARCH_X86_64 | |
42 | #endif /* __ILP32__ */ | |
43 | #elif __arm__ | |
44 | #define ARCH_NATIVE AUDIT_ARCH_ARM | |
45 | #elif __aarch64__ | |
46 | #define ARCH_NATIVE AUDIT_ARCH_AARCH64 | |
47 | #elif __mips__ && _MIPS_SIM == _MIPS_SIM_ABI32 | |
48 | #if __MIPSEB__ | |
49 | #define ARCH_NATIVE AUDIT_ARCH_MIPS | |
50 | #elif __MIPSEL__ | |
51 | #define ARCH_NATIVE AUDIT_ARCH_MIPSEL | |
52 | #endif /* _MIPS_SIM_ABI32 */ | |
53 | #elif __mips__ && _MIPS_SIM == _MIPS_SIM_ABI64 | |
54 | #if __MIPSEB__ | |
55 | #define ARCH_NATIVE AUDIT_ARCH_MIPS64 | |
56 | #elif __MIPSEL__ | |
57 | #define ARCH_NATIVE AUDIT_ARCH_MIPSEL64 | |
58 | #endif /* _MIPS_SIM_ABI64 */ | |
59 | #elif __mips__ && _MIPS_SIM == _MIPS_SIM_NABI32 | |
60 | #if __MIPSEB__ | |
61 | #define ARCH_NATIVE AUDIT_ARCH_MIPS64N32 | |
62 | #elif __MIPSEL__ | |
63 | #define ARCH_NATIVE AUDIT_ARCH_MIPSEL64N32 | |
64 | #endif /* _MIPS_SIM_NABI32 */ | |
65 | #elif __PPC64__ | |
66 | #ifdef __BIG_ENDIAN__ | |
67 | #define ARCH_NATIVE AUDIT_ARCH_PPC64 | |
68 | #else | |
69 | #define ARCH_NATIVE AUDIT_ARCH_PPC64LE | |
70 | #endif | |
71 | #elif __PPC__ | |
72 | #define ARCH_NATIVE AUDIT_ARCH_PPC | |
73 | #elif __s390x__ /* s390x must be checked before s390 */ | |
74 | #define ARCH_NATIVE AUDIT_ARCH_S390X | |
75 | #elif __s390__ | |
76 | #define ARCH_NATIVE AUDIT_ARCH_S390 | |
77 | #else | |
78 | #error the simulator code needs to know about your machine type | |
79 | #endif | |
80 | ||
81 | /* default to the native arch */ | |
82 | uint32_t arch = ARCH_NATIVE; | |
83 | ||
84 | /** | |
85 | * Convert a 16-bit target integer into the host's endianess | |
86 | * @param arch the architecture token | |
87 | * @param val the 16-bit integer | |
88 | * | |
89 | * Convert the endianess of the supplied value and return it to the caller. | |
90 | * | |
91 | */ | |
92 | uint16_t ttoh16(uint32_t arch, uint16_t val) | |
93 | { | |
94 | if (arch & __AUDIT_ARCH_LE) | |
95 | return le16toh(val); | |
96 | else | |
97 | return be16toh(val); | |
98 | } | |
99 | ||
100 | /** | |
101 | * Convert a 32-bit target integer into the host's endianess | |
102 | * @param arch the architecture token | |
103 | * @param val the 32-bit integer | |
104 | * | |
105 | * Convert the endianess of the supplied value and return it to the caller. | |
106 | * | |
107 | */ | |
108 | uint32_t ttoh32(uint32_t arch, uint32_t val) | |
109 | { | |
110 | if (arch & __AUDIT_ARCH_LE) | |
111 | return le32toh(val); | |
112 | else | |
113 | return be32toh(val); | |
114 | } | |
115 | ||
116 | /** | |
117 | * Convert a 32-bit host integer into the target's endianess | |
118 | * @param arch the architecture token | |
119 | * @param val the 32-bit integer | |
120 | * | |
121 | * Convert the endianess of the supplied value and return it to the caller. | |
122 | * | |
123 | */ | |
124 | uint32_t htot32(uint32_t arch, uint32_t val) | |
125 | { | |
126 | if (arch & __AUDIT_ARCH_LE) | |
127 | return htole32(val); | |
128 | else | |
129 | return htobe32(val); | |
130 | } | |
131 | ||
132 | /** | |
133 | * Convert a 64-bit host integer into the target's endianess | |
134 | * @param arch the architecture token | |
135 | * @param val the 64-bit integer | |
136 | * | |
137 | * Convert the endianess of the supplied value and return it to the caller. | |
138 | * | |
139 | */ | |
140 | uint64_t htot64(uint32_t arch, uint64_t val) | |
141 | { | |
142 | if (arch & __AUDIT_ARCH_LE) | |
143 | return htole64(val); | |
144 | else | |
145 | return htobe64(val); | |
146 | } |