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
|
//===-- FileSystem.cpp ------------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "lldb/Host/FileSystem.h"
// C includes
#include <sys/stat.h>
#include <sys/types.h>
// lldb Includes
#include "lldb/Core/Error.h"
#include "lldb/Core/StreamString.h"
#include "lldb/Host/Host.h"
using namespace lldb;
using namespace lldb_private;
FileSpec::PathSyntax
FileSystem::GetNativePathSyntax()
{
return FileSpec::ePathSyntaxPosix;
}
Error
FileSystem::MakeDirectory(const char *path, uint32_t file_permissions)
{
Error error;
if (path && path[0])
{
if (::mkdir(path, file_permissions) != 0)
{
error.SetErrorToErrno();
switch (error.GetError())
{
case ENOENT:
{
// Parent directory doesn't exist, so lets make it if we can
FileSpec spec(path, false);
if (spec.GetDirectory() && spec.GetFilename())
{
// Make the parent directory and try again
Error error2 = MakeDirectory(spec.GetDirectory().GetCString(), file_permissions);
if (error2.Success())
{
// Try and make the directory again now that the parent directory was made successfully
if (::mkdir(path, file_permissions) == 0)
error.Clear();
else
error.SetErrorToErrno();
}
}
}
break;
case EEXIST:
{
FileSpec path_spec(path, false);
if (path_spec.IsDirectory())
error.Clear(); // It is a directory and it already exists
}
break;
}
}
}
else
{
error.SetErrorString("empty path");
}
return error;
}
Error
FileSystem::DeleteDirectory(const char *path, bool recurse)
{
Error error;
if (path && path[0])
{
if (recurse)
{
StreamString command;
command.Printf("rm -rf \"%s\"", path);
int status = ::system(command.GetString().c_str());
if (status != 0)
error.SetError(status, eErrorTypeGeneric);
}
else
{
if (::rmdir(path) != 0)
error.SetErrorToErrno();
}
}
else
{
error.SetErrorString("empty path");
}
return error;
}
Error
FileSystem::GetFilePermissions(const char *path, uint32_t &file_permissions)
{
Error error;
struct stat file_stats;
if (::stat(path, &file_stats) == 0)
{
// The bits in "st_mode" currently match the definitions
// for the file mode bits in unix.
file_permissions = file_stats.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO);
}
else
{
error.SetErrorToErrno();
}
return error;
}
Error
FileSystem::SetFilePermissions(const char *path, uint32_t file_permissions)
{
Error error;
if (::chmod(path, file_permissions) != 0)
error.SetErrorToErrno();
return error;
}
lldb::user_id_t
FileSystem::GetFileSize(const FileSpec &file_spec)
{
return file_spec.GetByteSize();
}
bool
FileSystem::GetFileExists(const FileSpec &file_spec)
{
return file_spec.Exists();
}
Error
FileSystem::Symlink(const char *src, const char *dst)
{
Error error;
if (::symlink(dst, src) == -1)
error.SetErrorToErrno();
return error;
}
Error
FileSystem::Unlink(const char *path)
{
Error error;
if (::unlink(path) == -1)
error.SetErrorToErrno();
return error;
}
Error
FileSystem::Readlink(const char *path, char *buf, size_t buf_len)
{
Error error;
ssize_t count = ::readlink(path, buf, buf_len);
if (count < 0)
error.SetErrorToErrno();
else if (static_cast<size_t>(count) < (buf_len - 1))
buf[count] = '\0'; // Success
else
error.SetErrorString("'buf' buffer is too small to contain link contents");
return error;
}
bool
FileSystem::CalculateMD5(const FileSpec &file_spec, uint64_t &low, uint64_t &high)
{
#if defined(__APPLE__)
StreamString md5_cmd_line;
md5_cmd_line.Printf("md5 -q '%s'", file_spec.GetPath().c_str());
std::string hash_string;
Error err = Host::RunShellCommand(md5_cmd_line.GetData(), NULL, NULL, NULL, &hash_string, 60);
if (err.Fail())
return false;
// a correctly formed MD5 is 16-bytes, that is 32 hex digits
// if the output is any other length it is probably wrong
if (hash_string.size() != 32)
return false;
std::string part1(hash_string, 0, 16);
std::string part2(hash_string, 16);
const char *part1_cstr = part1.c_str();
const char *part2_cstr = part2.c_str();
high = ::strtoull(part1_cstr, NULL, 16);
low = ::strtoull(part2_cstr, NULL, 16);
return true;
#else
// your own MD5 implementation here
return false;
#endif
}
|
