-
Notifications
You must be signed in to change notification settings - Fork 24
/
porting.h
236 lines (217 loc) · 6.2 KB
/
porting.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
/*
* Copyright 2005-2024 Gentoo Foundation
* Distributed under the terms of the GNU General Public License v2
*
* Copyright 2005-2012 Ned Ludd - <[email protected]>
* Copyright 2005-2024 Mike Frysinger - <[email protected]>
*
* Make sure all of the common elf stuff is setup as we expect
*/
#ifndef _PORTING_H
#define _PORTING_H
#include "config.h"
#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof(*arr))
#include <assert.h>
#include <ctype.h>
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <fnmatch.h>
#include <getopt.h>
#include <inttypes.h>
#include <libgen.h>
#include <limits.h>
#include <pwd.h>
#include <regex.h>
#include <sched.h>
#include <signal.h>
#include <stddef.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <time.h>
#include <unistd.h>
#include "elf.h"
#ifdef HAVE_SYS_PRCTL_H
# include <sys/prctl.h>
# ifdef HAVE_LINUX_SECCOMP_H
# include <linux/seccomp.h>
# endif
# ifdef HAVE_LINUX_SECUREBITS_H
# include <linux/securebits.h>
# endif
#endif
#if defined(HAVE_ENDIAN_H) && defined(HAVE_BYTESWAP_H)
# include <byteswap.h>
# include <endian.h>
#elif defined(HAVE_SYS_ENDIAN_H)
# include <sys/endian.h>
#elif defined(HAVE_ISA_DEFS_H)
# include <sys/isa_defs.h>
#elif defined(HAVE_MACHINE_ENDIAN_H)
# include <machine/endian.h>
#endif
#ifdef HAVE_GLOB_H
# include <glob.h>
#endif
#if defined(__GLIBC__) || defined(__UCLIBC__) || defined(__NetBSD__)
# define __PAX_UTILS_DEFAULT_LD_CACHE_CONFIG "/etc/ld.so.conf"
#elif defined(HAVE_ELF_HINTS_H)
# include <elf-hints.h>
# define __PAX_UTILS_DEFAULT_LD_CACHE_CONFIG _PATH_ELF_HINTS
#else
# define __PAX_UTILS_DEFAULT_LD_CACHE_CONFIG ""
#endif
#undef PAX_UTILS_CLEANUP
#ifndef __SANITIZE_ADDRESS__
# ifdef __has_feature
# if __has_feature (address_sanitizer)
# define __SANITIZE_ADDRESS__ 1
# endif
# endif
#endif
/* LSAN (Leak Sanitizer) will complain about things we leak. */
#ifdef __SANITIZE_ADDRESS__
# define PAX_UTILS_CLEANUP 1
#endif
/* Coverity catches some things we leak on purpose. */
#ifdef __COVERITY__
# define PAX_UTILS_CLEANUP 1
#endif
#ifndef PAX_UTILS_CLEANUP
# define PAX_UTILS_CLEANUP 0
#endif
/* Support for libFuzzer: https://llvm.org/docs/LibFuzzer.html */
#ifndef PAX_UTILS_LIBFUZZ
# define PAX_UTILS_LIBFUZZ 0
#endif
/* Few arches can safely do unaligned accesses */
#if defined(__cris__) || \
defined(__i386__) || \
defined(__powerpc__) || \
defined(__s390__) || \
defined(__x86_64__)
# define __PAX_UNALIGNED_OK 1
#else
# define __PAX_UNALIGNED_OK 0
#endif
#if !defined(bswap_16)
# if defined(bswap16)
# define bswap_16 bswap16
# define bswap_32 bswap32
# define bswap_64 bswap64
# else
# define bswap_16(x) \
((((x) & 0xff00) >> 8) | \
(((x) & 0x00ff) << 8))
# define bswap_32(x) \
((((x) & 0xff000000) >> 24) | \
(((x) & 0x00ff0000) >> 8) | \
(((x) & 0x0000ff00) << 8) | \
(((x) & 0x000000ff) << 24))
# if defined(__GNUC__)
# define bswap_64(x) \
((((x) & 0xff00000000000000ull) >> 56) | \
(((x) & 0x00ff000000000000ull) >> 40) | \
(((x) & 0x0000ff0000000000ull) >> 24) | \
(((x) & 0x000000ff00000000ull) >> 8) | \
(((x) & 0x00000000ff000000ull) << 8) | \
(((x) & 0x0000000000ff0000ull) << 24) | \
(((x) & 0x000000000000ff00ull) << 40) | \
(((x) & 0x00000000000000ffull) << 56))
# else
# define bswap_64(x) \
((((x) & 0xff00000000000000) >> 56) | \
(((x) & 0x00ff000000000000) >> 40) | \
(((x) & 0x0000ff0000000000) >> 24) | \
(((x) & 0x000000ff00000000) >> 8) | \
(((x) & 0x00000000ff000000) << 8) | \
(((x) & 0x0000000000ff0000) << 24) | \
(((x) & 0x000000000000ff00) << 40) | \
(((x) & 0x00000000000000ff) << 56))
# endif
# endif
#endif
#define _minmax(x, y, op) \
({ __typeof__(x) __x = (x); __typeof__(y) __y = (y); (__x op __y ? __x : __y); })
#if !defined(min)
# define min(x, y) _minmax(x, y, <)
#endif
#if !defined(max)
# define max(x, y) _minmax(x, y, >)
#endif
#if !defined(_POSIX_PATH_MAX) && !defined(PATH_MAX) /* __PAX_UTILS_PATH_MAX */
# define __PAX_UTILS_PATH_MAX 8192
#elif _POSIX_PATH_MAX > PATH_MAX /* __PAX_UTILS_PATH_MAX */
# define __PAX_UTILS_PATH_MAX _POSIX_PATH_MAX
#else
# define __PAX_UTILS_PATH_MAX PATH_MAX
#endif
#if !defined(ELF_DATA)
# if defined(BYTE_ORDER)
# if BYTE_ORDER == LITTLE_ENDIAN
# define ELF_DATA ELFDATA2LSB
# elif BYTE_ORDER == BIG_ENDIAN
# define ELF_DATA ELFDATA2MSB
# else
# error "BYTE_ORDER: you fail"
# endif
# elif defined(__BYTE_ORDER)
# if __BYTE_ORDER == __LITTLE_ENDIAN
# define ELF_DATA ELFDATA2LSB
# elif __BYTE_ORDER == __BIG_ENDIAN
# define ELF_DATA ELFDATA2BSB
# else
# error "__BYTE_ORDER: you fail"
# endif
# elif defined(WORDS_LITTLENDIAN)
# define ELF_DATA ELFDATA2LSB
# elif defined(WORDS_BIGENDIAN)
# define ELF_DATA ELFDATA2MSB
# elif defined(_LITTLE_ENDIAN)
# define ELF_DATA ELFDATA2LSB
# elif defined(_BIG_ENDIAN) || defined(__BIG_ENDIAN__)
# define ELF_DATA ELFDATA2MSB
# else
# error "no idea what the native byte order is"
# endif
#endif
/*
* Probably will never be officially added to the toolchain.
* But none the less we should try to get 0x65041580 reserved
*/
#ifndef PT_PAX_FLAGS
# define PT_PAX_FLAGS 0x65041580
# define PF_PAGEEXEC (1 << 4) /* Enable PAGEEXEC */
# define PF_NOPAGEEXEC (1 << 5) /* Disable PAGEEXEC */
# define PF_SEGMEXEC (1 << 6) /* Enable SEGMEXEC */
# define PF_NOSEGMEXEC (1 << 7) /* Disable SEGMEXEC */
# define PF_MPROTECT (1 << 8) /* Enable MPROTECT */
# define PF_NOMPROTECT (1 << 9) /* Disable MPROTECT */
# define PF_RANDEXEC (1 << 10) /* Enable RANDEXEC */
# define PF_NORANDEXEC (1 << 11) /* Disable RANDEXEC */
# define PF_EMUTRAMP (1 << 12) /* Enable EMUTRAMP */
# define PF_NOEMUTRAMP (1 << 13) /* Disable EMUTRAMP */
# define PF_RANDMMAP (1 << 14) /* Enable RANDMMAP */
# define PF_NORANDMMAP (1 << 15) /* Disable RANDMMAP */
#endif /* PT_PAX_ */
/* older glibc/uclibc will need this since they typo-ed the define */
#ifndef EM_ST19
# ifdef EM_AT19
# define EM_ST19 EM_AT19
# else
# define EM_ST19 74
# endif
#endif
#ifndef O_CLOEXEC
# define O_CLOEXEC 0
#endif
#ifndef O_PATH
# define O_PATH 0
#endif
#define __unused__ __attribute__((__unused__))
#endif /* _PORTING_H */