1 //===-- source/Host/freebsd/Host.cpp ------------------------------*- C++
4 // The LLVM Compiler Infrastructure
6 // This file is distributed under the University of Illinois Open Source
7 // License. See LICENSE.TXT for details.
9 //===----------------------------------------------------------------------===//
12 #include <sys/types.h>
16 #include <sys/ptrace.h>
17 #include <sys/sysctl.h>
20 #include <machine/elf.h>
27 // Other libraries and framework includes
29 #include "lldb/Core/Module.h"
30 #include "lldb/Core/StreamFile.h"
31 #include "lldb/Host/Host.h"
32 #include "lldb/Host/HostInfo.h"
33 #include "lldb/Target/Platform.h"
34 #include "lldb/Target/Process.h"
35 #include "lldb/Utility/DataExtractor.h"
36 #include "lldb/Utility/Endian.h"
37 #include "lldb/Utility/Error.h"
38 #include "lldb/Utility/Log.h"
39 #include "lldb/Utility/StreamString.h"
41 #include "lldb/Utility/CleanUp.h"
42 #include "lldb/Utility/DataBufferHeap.h"
43 #include "lldb/Utility/DataExtractor.h"
44 #include "lldb/Utility/NameMatches.h"
46 #include "llvm/Support/Host.h"
49 extern char **environ;
53 using namespace lldb_private;
56 GetFreeBSDProcessArgs(const ProcessInstanceInfoMatch *match_info_ptr,
57 ProcessInstanceInfo &process_info) {
58 if (!process_info.ProcessIDIsValid())
61 int pid = process_info.GetProcessID();
63 int mib[4] = {CTL_KERN, KERN_PROC, KERN_PROC_ARGS, pid};
66 size_t arg_data_size = sizeof(arg_data);
67 if (::sysctl(mib, 4, arg_data, &arg_data_size, NULL, 0) != 0)
70 DataExtractor data(arg_data, arg_data_size, endian::InlHostByteOrder(),
72 lldb::offset_t offset = 0;
75 cstr = data.GetCStr(&offset);
79 process_info.GetExecutableFile().SetFile(cstr, false);
81 if (!(match_info_ptr == NULL ||
82 NameMatches(process_info.GetExecutableFile().GetFilename().GetCString(),
83 match_info_ptr->GetNameMatchType(),
84 match_info_ptr->GetProcessInfo().GetName())))
87 Args &proc_args = process_info.GetArguments();
89 const uint8_t *p = data.PeekData(offset, 1);
90 while ((p != NULL) && (*p == '\0') && offset < arg_data_size) {
92 p = data.PeekData(offset, 1);
94 if (p == NULL || offset >= arg_data_size)
97 cstr = data.GetCStr(&offset);
101 proc_args.AppendArgument(llvm::StringRef(cstr));
107 static bool GetFreeBSDProcessCPUType(ProcessInstanceInfo &process_info) {
108 if (process_info.ProcessIDIsValid()) {
109 process_info.GetArchitecture() =
110 HostInfo::GetArchitecture(HostInfo::eArchKindDefault);
113 process_info.GetArchitecture().Clear();
117 static bool GetFreeBSDProcessUserAndGroup(ProcessInstanceInfo &process_info) {
118 struct kinfo_proc proc_kinfo;
119 size_t proc_kinfo_size;
120 const int pid = process_info.GetProcessID();
121 int mib[4] = {CTL_KERN, KERN_PROC, KERN_PROC_PID, pid};
123 if (!process_info.ProcessIDIsValid())
126 proc_kinfo_size = sizeof(struct kinfo_proc);
128 if (::sysctl(mib, 4, &proc_kinfo, &proc_kinfo_size, NULL, 0) != 0)
131 if (proc_kinfo_size == 0)
134 process_info.SetParentProcessID(proc_kinfo.ki_ppid);
135 process_info.SetUserID(proc_kinfo.ki_ruid);
136 process_info.SetGroupID(proc_kinfo.ki_rgid);
137 process_info.SetEffectiveUserID(proc_kinfo.ki_uid);
138 if (proc_kinfo.ki_ngroups > 0)
139 process_info.SetEffectiveGroupID(proc_kinfo.ki_groups[0]);
141 process_info.SetEffectiveGroupID(UINT32_MAX);
145 process_info.SetParentProcessID(LLDB_INVALID_PROCESS_ID);
146 process_info.SetUserID(UINT32_MAX);
147 process_info.SetGroupID(UINT32_MAX);
148 process_info.SetEffectiveUserID(UINT32_MAX);
149 process_info.SetEffectiveGroupID(UINT32_MAX);
153 uint32_t Host::FindProcesses(const ProcessInstanceInfoMatch &match_info,
154 ProcessInstanceInfoList &process_infos) {
155 const ::pid_t our_pid = ::getpid();
156 const ::uid_t our_uid = ::getuid();
157 std::vector<struct kinfo_proc> kinfos;
158 // Special case, if lldb is being run as root we can attach to anything.
159 bool all_users = match_info.GetMatchAllUsers() || (our_uid == 0);
161 int mib[3] = {CTL_KERN, KERN_PROC, KERN_PROC_ALL};
163 size_t pid_data_size = 0;
164 if (::sysctl(mib, 3, NULL, &pid_data_size, NULL, 0) != 0)
167 // Add a few extra in case a few more show up
168 const size_t estimated_pid_count =
169 (pid_data_size / sizeof(struct kinfo_proc)) + 10;
171 kinfos.resize(estimated_pid_count);
172 pid_data_size = kinfos.size() * sizeof(struct kinfo_proc);
174 if (::sysctl(mib, 3, &kinfos[0], &pid_data_size, NULL, 0) != 0)
177 const size_t actual_pid_count = (pid_data_size / sizeof(struct kinfo_proc));
179 for (size_t i = 0; i < actual_pid_count; i++) {
180 const struct kinfo_proc &kinfo = kinfos[i];
182 /* Make sure the user is acceptable */
183 if (!all_users && kinfo.ki_ruid != our_uid)
186 if (kinfo.ki_pid == our_pid || // Skip this process
187 kinfo.ki_pid == 0 || // Skip kernel (kernel pid is 0)
188 kinfo.ki_stat == SZOMB || // Zombies are bad
189 kinfo.ki_flag & P_TRACED || // Being debugged?
190 kinfo.ki_flag & P_WEXIT) // Working on exiting
193 // Every thread is a process in FreeBSD, but all the threads of a single
194 // process have the same pid. Do not store the process info in the
195 // result list if a process with given identifier is already registered
197 bool already_registered = false;
198 for (uint32_t pi = 0;
199 !already_registered && (const int)kinfo.ki_numthreads > 1 &&
200 pi < (const uint32_t)process_infos.GetSize();
203 (process_infos.GetProcessIDAtIndex(pi) == (uint32_t)kinfo.ki_pid);
205 if (already_registered)
208 ProcessInstanceInfo process_info;
209 process_info.SetProcessID(kinfo.ki_pid);
210 process_info.SetParentProcessID(kinfo.ki_ppid);
211 process_info.SetUserID(kinfo.ki_ruid);
212 process_info.SetGroupID(kinfo.ki_rgid);
213 process_info.SetEffectiveUserID(kinfo.ki_svuid);
214 process_info.SetEffectiveGroupID(kinfo.ki_svgid);
216 // Make sure our info matches before we go fetch the name and cpu type
217 if (match_info.Matches(process_info) &&
218 GetFreeBSDProcessArgs(&match_info, process_info)) {
219 GetFreeBSDProcessCPUType(process_info);
220 if (match_info.Matches(process_info))
221 process_infos.Append(process_info);
225 return process_infos.GetSize();
228 bool Host::GetProcessInfo(lldb::pid_t pid, ProcessInstanceInfo &process_info) {
229 process_info.SetProcessID(pid);
231 if (GetFreeBSDProcessArgs(NULL, process_info)) {
232 // should use libprocstat instead of going right into sysctl?
233 GetFreeBSDProcessCPUType(process_info);
234 GetFreeBSDProcessUserAndGroup(process_info);
238 process_info.Clear();
242 size_t Host::GetEnvironment(StringList &env) {
243 char **host_env = environ;
246 for (i = 0; (env_entry = host_env[i]) != NULL; ++i)
247 env.AppendString(env_entry);
251 Error Host::ShellExpandArguments(ProcessLaunchInfo &launch_info) {
252 return Error("unimplemented");