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
|
/*
* Copyright (C) the libgit2 contributors. All rights reserved.
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#ifndef INCLUDE_git2_util_h__
#define INCLUDE_git2_util_h__
#if !defined(LIBGIT2_NO_FEATURES_H)
# include "git2_features.h"
#endif
#include "git2/common.h"
#include "cc-compat.h"
typedef struct git_str git_str;
/** Declare a function as always inlined. */
#if defined(_MSC_VER)
# define GIT_INLINE(type) static __inline type
#elif defined(__GNUC__)
# define GIT_INLINE(type) static __inline__ type
#else
# define GIT_INLINE(type) static type
#endif
/** Support for gcc/clang __has_builtin intrinsic */
#ifndef __has_builtin
# define __has_builtin(x) 0
#endif
/**
* Declare that a function's return value must be used.
*
* Used mostly to guard against potential silent bugs at runtime. This is
* recommended to be added to functions that:
*
* - Allocate / reallocate memory. This prevents memory leaks or errors where
* buffers are expected to have grown to a certain size, but could not be
* resized.
* - Acquire locks. When a lock cannot be acquired, that will almost certainly
* cause a data race / undefined behavior.
*/
#if defined(__GNUC__)
# define GIT_WARN_UNUSED_RESULT __attribute__((warn_unused_result))
#else
# define GIT_WARN_UNUSED_RESULT
#endif
#include <assert.h>
#include <errno.h>
#include <limits.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#ifdef GIT_WIN32
# include <io.h>
# include <direct.h>
# include <winsock2.h>
# include <windows.h>
# include <ws2tcpip.h>
# include "win32/msvc-compat.h"
# include "win32/mingw-compat.h"
# include "win32/win32-compat.h"
# include "win32/w32_common.h"
# include "win32/version.h"
# include "win32/error.h"
# ifdef GIT_THREADS
# include "win32/thread.h"
# endif
#else
# include <unistd.h>
# include <strings.h>
# ifdef GIT_THREADS
# include <pthread.h>
# include <sched.h>
# endif
#define GIT_LIBGIT2_CALL
#define GIT_SYSTEM_CALL
#ifdef GIT_USE_STAT_ATIMESPEC
# define st_atim st_atimespec
# define st_ctim st_ctimespec
# define st_mtim st_mtimespec
#endif
# include <arpa/inet.h>
#endif
#include "git2/types.h"
#include "git2/errors.h"
#include "thread.h"
#include "integer.h"
#include "assert_safe.h"
#include "posix.h"
#define GIT_BUFSIZE_DEFAULT 65536
#define GIT_BUFSIZE_FILEIO GIT_BUFSIZE_DEFAULT
#define GIT_BUFSIZE_FILTERIO GIT_BUFSIZE_DEFAULT
#define GIT_BUFSIZE_NETIO GIT_BUFSIZE_DEFAULT
/**
* Check a pointer allocation result, returning -1 if it failed.
*/
#define GIT_ERROR_CHECK_ALLOC(ptr) do { \
if ((ptr) == NULL) { return -1; } \
} while(0)
/**
* Check a buffer allocation result, returning -1 if it failed.
*/
#define GIT_ERROR_CHECK_ALLOC_STR(buf) do { \
if ((void *)(buf) == NULL || git_str_oom(buf)) { return -1; } \
} while(0)
/**
* Check a return value and propagate result if non-zero.
*/
#define GIT_ERROR_CHECK_ERROR(code) \
do { int _err = (code); if (_err) return _err; } while (0)
/** Check for additive overflow, setting an error if would occur. */
#define GIT_ADD_SIZET_OVERFLOW(out, one, two) \
(git__add_sizet_overflow(out, one, two) ? (git_error_set_oom(), 1) : 0)
/** Check for additive overflow, setting an error if would occur. */
#define GIT_MULTIPLY_SIZET_OVERFLOW(out, nelem, elsize) \
(git__multiply_sizet_overflow(out, nelem, elsize) ? (git_error_set_oom(), 1) : 0)
/** Check for additive overflow, failing if it would occur. */
#define GIT_ERROR_CHECK_ALLOC_ADD(out, one, two) \
if (GIT_ADD_SIZET_OVERFLOW(out, one, two)) { return -1; }
#define GIT_ERROR_CHECK_ALLOC_ADD3(out, one, two, three) \
if (GIT_ADD_SIZET_OVERFLOW(out, one, two) || \
GIT_ADD_SIZET_OVERFLOW(out, *(out), three)) { return -1; }
#define GIT_ERROR_CHECK_ALLOC_ADD4(out, one, two, three, four) \
if (GIT_ADD_SIZET_OVERFLOW(out, one, two) || \
GIT_ADD_SIZET_OVERFLOW(out, *(out), three) || \
GIT_ADD_SIZET_OVERFLOW(out, *(out), four)) { return -1; }
#define GIT_ERROR_CHECK_ALLOC_ADD5(out, one, two, three, four, five) \
if (GIT_ADD_SIZET_OVERFLOW(out, one, two) || \
GIT_ADD_SIZET_OVERFLOW(out, *(out), three) || \
GIT_ADD_SIZET_OVERFLOW(out, *(out), four) || \
GIT_ADD_SIZET_OVERFLOW(out, *(out), five)) { return -1; }
/** Check for multiplicative overflow, failing if it would occur. */
#define GIT_ERROR_CHECK_ALLOC_MULTIPLY(out, nelem, elsize) \
if (GIT_MULTIPLY_SIZET_OVERFLOW(out, nelem, elsize)) { return -1; }
#include "util.h"
#endif
|
