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
|
//===-- HostInfoPosix.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/lldb-python.h"
#include "lldb/Core/Log.h"
#include "lldb/Host/posix/HostInfoPosix.h"
#include "llvm/ADT/SmallString.h"
#include "llvm/Support/raw_ostream.h"
#include <grp.h>
#include <limits.h>
#include <netdb.h>
#include <pwd.h>
#include <sys/types.h>
#include <unistd.h>
using namespace lldb_private;
size_t
HostInfoPosix::GetPageSize()
{
return ::getpagesize();
}
bool
HostInfoPosix::GetHostname(std::string &s)
{
char hostname[PATH_MAX];
hostname[sizeof(hostname) - 1] = '\0';
if (::gethostname(hostname, sizeof(hostname) - 1) == 0)
{
struct hostent *h = ::gethostbyname(hostname);
if (h)
s.assign(h->h_name);
else
s.assign(hostname);
return true;
}
return false;
}
const char *
HostInfoPosix::LookupUserName(uint32_t uid, std::string &user_name)
{
struct passwd user_info;
struct passwd *user_info_ptr = &user_info;
char user_buffer[PATH_MAX];
size_t user_buffer_size = sizeof(user_buffer);
if (::getpwuid_r(uid, &user_info, user_buffer, user_buffer_size, &user_info_ptr) == 0)
{
if (user_info_ptr)
{
user_name.assign(user_info_ptr->pw_name);
return user_name.c_str();
}
}
user_name.clear();
return NULL;
}
const char *
HostInfoPosix::LookupGroupName(uint32_t gid, std::string &group_name)
{
char group_buffer[PATH_MAX];
size_t group_buffer_size = sizeof(group_buffer);
struct group group_info;
struct group *group_info_ptr = &group_info;
// Try the threadsafe version first
if (::getgrgid_r(gid, &group_info, group_buffer, group_buffer_size, &group_info_ptr) == 0)
{
if (group_info_ptr)
{
group_name.assign(group_info_ptr->gr_name);
return group_name.c_str();
}
}
else
{
// The threadsafe version isn't currently working for me on darwin, but the non-threadsafe version
// is, so I am calling it below.
group_info_ptr = ::getgrgid(gid);
if (group_info_ptr)
{
group_name.assign(group_info_ptr->gr_name);
return group_name.c_str();
}
}
group_name.clear();
return NULL;
}
uint32_t
HostInfoPosix::GetUserID()
{
return getuid();
}
uint32_t
HostInfoPosix::GetGroupID()
{
return getgid();
}
uint32_t
HostInfoPosix::GetEffectiveUserID()
{
return geteuid();
}
uint32_t
HostInfoPosix::GetEffectiveGroupID()
{
return getegid();
}
bool
HostInfoPosix::ComputeSupportExeDirectory(FileSpec &file_spec)
{
Log *log = lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_HOST);
FileSpec lldb_file_spec;
if (!GetLLDBPath(lldb::ePathTypeLLDBShlibDir, lldb_file_spec))
return false;
char raw_path[PATH_MAX];
lldb_file_spec.GetPath(raw_path, sizeof(raw_path));
// Most Posix systems (e.g. Linux/*BSD) will attempt to replace a */lib with */bin as the base
// directory for helper exe programs. This will fail if the /lib and /bin directories are
// rooted in entirely different trees.
if (log)
log->Printf("HostInfoPosix::ComputeSupportExeDirectory() attempting to derive the bin path (ePathTypeSupportExecutableDir) from "
"this path: %s",
raw_path);
char *lib_pos = ::strstr(raw_path, "/lib");
if (lib_pos != nullptr)
{
// First terminate the raw path at the start of lib.
*lib_pos = '\0';
// Now write in bin in place of lib.
::strncpy(lib_pos, "/bin", PATH_MAX - (lib_pos - raw_path));
if (log)
log->Printf("Host::%s() derived the bin path as: %s", __FUNCTION__, raw_path);
}
else
{
if (log)
log->Printf("Host::%s() failed to find /lib/liblldb within the shared lib path, bailing on bin path construction",
__FUNCTION__);
}
file_spec.GetDirectory().SetCString(raw_path);
return (bool)file_spec.GetDirectory();
}
bool
HostInfoPosix::ComputeHeaderDirectory(FileSpec &file_spec)
{
FileSpec temp_file("/opt/local/include/lldb", false);
file_spec.GetDirectory().SetCString(temp_file.GetPath().c_str());
return true;
}
bool
HostInfoPosix::ComputePythonDirectory(FileSpec &file_spec)
{
FileSpec lldb_file_spec;
if (!GetLLDBPath(lldb::ePathTypeLLDBShlibDir, lldb_file_spec))
return false;
char raw_path[PATH_MAX];
lldb_file_spec.GetPath(raw_path, sizeof(raw_path));
llvm::SmallString<256> python_version_dir;
llvm::raw_svector_ostream os(python_version_dir);
os << "/python" << PY_MAJOR_VERSION << '.' << PY_MINOR_VERSION << "/site-packages";
os.flush();
// We may get our string truncated. Should we protect this with an assert?
::strncat(raw_path, python_version_dir.c_str(), sizeof(raw_path) - strlen(raw_path) - 1);
file_spec.GetDirectory().SetCString(raw_path);
return true;
}
|
