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
|
// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/process_util.h"
#include <ctype.h>
#include <dirent.h>
#include <dlfcn.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/sysctl.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/user.h>
#include <sys/wait.h>
#include <time.h>
#include <unistd.h>
#include "base/logging.h"
#include "base/string_tokenizer.h"
#include "base/string_util.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_split.h"
#include "base/sys_info.h"
namespace base {
ProcessId GetParentProcessId(ProcessHandle process) {
struct kinfo_proc info;
size_t length;
int mib[] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, process };
if (sysctl(mib, arraysize(mib), &info, &length, NULL, 0) < 0)
return -1;
return info.ki_ppid;
}
FilePath GetProcessExecutablePath(ProcessHandle process) {
char pathname[PATH_MAX];
size_t length;
int mib[] = { CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, process };
length = sizeof(pathname);
if (sysctl(mib, arraysize(mib), pathname, &length, NULL, 0) < 0 ||
length == 0) {
return FilePath();
}
return FilePath(std::string(pathname));
}
ProcessIterator::ProcessIterator(const ProcessFilter* filter)
: index_of_kinfo_proc_(),
filter_(filter) {
int mib[] = { CTL_KERN, KERN_PROC, KERN_PROC_UID, getuid() };
bool done = false;
int try_num = 1;
const int max_tries = 10;
do {
size_t len = 0;
if (sysctl(mib, arraysize(mib), NULL, &len, NULL, 0) < 0) {
LOG(ERROR) << "failed to get the size needed for the process list";
kinfo_procs_.resize(0);
done = true;
} else {
size_t num_of_kinfo_proc = len / sizeof(struct kinfo_proc);
// Leave some spare room for process table growth (more could show up
// between when we check and now)
num_of_kinfo_proc += 16;
kinfo_procs_.resize(num_of_kinfo_proc);
len = num_of_kinfo_proc * sizeof(struct kinfo_proc);
if (sysctl(mib, arraysize(mib), &kinfo_procs_[0], &len, NULL, 0) <0) {
// If we get a mem error, it just means we need a bigger buffer, so
// loop around again. Anything else is a real error and give up.
if (errno != ENOMEM) {
LOG(ERROR) << "failed to get the process list";
kinfo_procs_.resize(0);
done = true;
}
} else {
// Got the list, just make sure we're sized exactly right
size_t num_of_kinfo_proc = len / sizeof(struct kinfo_proc);
kinfo_procs_.resize(num_of_kinfo_proc);
done = true;
}
}
} while (!done && (try_num++ < max_tries));
if (!done) {
LOG(ERROR) << "failed to collect the process list in a few tries";
kinfo_procs_.resize(0);
}
}
ProcessIterator::~ProcessIterator() {
}
bool ProcessIterator::CheckForNextProcess() {
std::string data;
for (; index_of_kinfo_proc_ < kinfo_procs_.size(); ++index_of_kinfo_proc_) {
size_t length;
struct kinfo_proc kinfo = kinfo_procs_[index_of_kinfo_proc_];
int mib[] = { CTL_KERN, KERN_PROC_ARGS, kinfo.ki_pid };
if ((kinfo.ki_pid > 0) && (kinfo.ki_stat == SZOMB))
continue;
length = 0;
if (sysctl(mib, arraysize(mib), NULL, &length, NULL, 0) < 0) {
LOG(ERROR) << "failed to figure out the buffer size for a command line";
continue;
}
data.resize(length);
if (sysctl(mib, arraysize(mib), &data[0], &length, NULL, 0) < 0) {
LOG(ERROR) << "failed to fetch a commandline";
continue;
}
std::string delimiters;
delimiters.push_back('\0');
Tokenize(data, delimiters, &entry_.cmd_line_args_);
size_t exec_name_end = data.find('\0');
if (exec_name_end == std::string::npos) {
LOG(ERROR) << "command line data didn't match expected format";
continue;
}
entry_.pid_ = kinfo.ki_pid;
entry_.ppid_ = kinfo.ki_ppid;
entry_.gid_ = kinfo.ki_pgid;
size_t last_slash = data.rfind('/', exec_name_end);
if (last_slash == std::string::npos) {
entry_.exe_file_.assign(data, 0, exec_name_end);
} else {
entry_.exe_file_.assign(data, last_slash + 1,
exec_name_end - last_slash - 1);
}
// Start w/ the next entry next time through
++index_of_kinfo_proc_;
return true;
}
return false;
}
bool NamedProcessIterator::IncludeEntry() {
if (executable_name_ != entry().exe_file())
return false;
return ProcessIterator::IncludeEntry();
}
void EnableTerminationOnOutOfMemory() {
DLOG(WARNING) << "Not feasible.";
}
void EnableTerminationOnHeapCorruption() {
// Nothing to do.
}
bool AdjustOOMScore(ProcessId process, int score) {
NOTIMPLEMENTED();
return false;
}
} // namespace base
|
