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
|
/* Declarations for common convenience functions.
Copyright (C) 2006-2011 Red Hat, Inc.
This file is part of elfutils.
This file is free software; you can redistribute it and/or modify
it under the terms of either
* the GNU Lesser General Public License as published by the Free
Software Foundation; either version 3 of the License, or (at
your option) any later version
or
* the GNU General Public License as published by the Free
Software Foundation; either version 2 of the License, or (at
your option) any later version
or both in parallel, as here.
elfutils is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received copies of the GNU General Public License and
the GNU Lesser General Public License along with this program. If
not, see <http://www.gnu.org/licenses/>. */
#ifndef LIB_SYSTEM_H
#define LIB_SYSTEM_H 1
#include <config.h>
#include <errno.h>
#include <stddef.h>
#include <stdint.h>
#include <sys/param.h>
#include <endian.h>
#include <byteswap.h>
#include <unistd.h>
#include <string.h>
#include <stdarg.h>
#include <stdlib.h>
#if defined(HAVE_ERROR_H)
#include <error.h>
#elif defined(HAVE_ERR_H)
extern int error_message_count;
void error(int status, int errnum, const char *format, ...);
#else
#error "err.h or error.h must be available"
#endif
#if __BYTE_ORDER == __LITTLE_ENDIAN
# define LE32(n) (n)
# define LE64(n) (n)
# define BE32(n) bswap_32 (n)
# define BE64(n) bswap_64 (n)
#elif __BYTE_ORDER == __BIG_ENDIAN
# define BE32(n) (n)
# define BE64(n) (n)
# define LE32(n) bswap_32 (n)
# define LE64(n) bswap_64 (n)
#else
# error "Unknown byte order"
#endif
#ifndef MAX
#define MAX(m, n) ((m) < (n) ? (n) : (m))
#endif
#ifndef MIN
#define MIN(m, n) ((m) < (n) ? (m) : (n))
#endif
#if !HAVE_DECL_POWEROF2
#define powerof2(x) (((x) & ((x) - 1)) == 0)
#endif
#if !HAVE_DECL_MEMPCPY
#define mempcpy(dest, src, n) \
((void *) ((char *) memcpy (dest, src, n) + (size_t) n))
#endif
#if !HAVE_DECL_REALLOCARRAY
static inline void *
reallocarray (void *ptr, size_t nmemb, size_t size)
{
if (size > 0 && nmemb > SIZE_MAX / size)
{
errno = ENOMEM;
return NULL;
}
return realloc (ptr, nmemb * size);
}
#endif
/* Return TRUE if the start of STR matches PREFIX, FALSE otherwise. */
static inline int
startswith (const char *str, const char *prefix)
{
return strncmp (str, prefix, strlen (prefix)) == 0;
}
/* A special gettext function we use if the strings are too short. */
#define sgettext(Str) \
({ const char *__res = strrchr (_(Str), '|'); \
__res ? __res + 1 : Str; })
#define gettext_noop(Str) Str
#ifndef TEMP_FAILURE_RETRY
#define TEMP_FAILURE_RETRY(expression) \
({ ssize_t __res; \
do \
__res = expression; \
while (__res == -1 && errno == EINTR); \
__res; })
#endif
#ifndef ACCESSPERMS
#define ACCESSPERMS (S_IRWXU|S_IRWXG|S_IRWXO) /* 0777 */
#endif
#ifndef ALLPERMS
#define ALLPERMS (S_ISUID|S_ISGID|S_ISVTX|S_IRWXU|S_IRWXG|S_IRWXO) /* 07777 */
#endif
#ifndef DEFFILEMODE
#define DEFFILEMODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)/* 0666 */
#endif
static inline ssize_t __attribute__ ((unused))
pwrite_retry (int fd, const void *buf, size_t len, off_t off)
{
ssize_t recvd = 0;
do
{
ssize_t ret = TEMP_FAILURE_RETRY (pwrite (fd, ((char *)buf) + recvd, len - recvd,
off + recvd));
if (ret <= 0)
return ret < 0 ? ret : recvd;
recvd += ret;
}
while ((size_t) recvd < len);
return recvd;
}
static inline ssize_t __attribute__ ((unused))
write_retry (int fd, const void *buf, size_t len)
{
ssize_t recvd = 0;
do
{
ssize_t ret = TEMP_FAILURE_RETRY (write (fd, ((char *)buf) + recvd, len - recvd));
if (ret <= 0)
return ret < 0 ? ret : recvd;
recvd += ret;
}
while ((size_t) recvd < len);
return recvd;
}
static inline ssize_t __attribute__ ((unused))
pread_retry (int fd, void *buf, size_t len, off_t off)
{
ssize_t recvd = 0;
do
{
ssize_t ret = TEMP_FAILURE_RETRY (pread (fd, ((char *)buf) + recvd, len - recvd,
off + recvd));
if (ret <= 0)
return ret < 0 ? ret : recvd;
recvd += ret;
}
while ((size_t) recvd < len);
return recvd;
}
/* The demangler from libstdc++. */
extern char *__cxa_demangle (const char *mangled_name, char *output_buffer,
size_t *length, int *status);
/* A static assertion. This will cause a compile-time error if EXPR,
which must be a compile-time constant, is false. */
#define eu_static_assert(expr) \
extern int never_defined_just_used_for_checking[(expr) ? 1 : -1] \
__attribute__ ((unused))
#endif /* system.h */
|
