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 //===----------------------------------------------------------------------===//
11 #include <sys/types.h>
15 #include <sys/ptrace.h>
16 #include <sys/sysctl.h>
19 #include <machine/elf.h>
25 #include "lldb/Host/Host.h"
26 #include "lldb/Host/HostInfo.h"
27 #include "lldb/Target/Process.h"
28 #include "lldb/Utility/DataBufferHeap.h"
29 #include "lldb/Utility/DataExtractor.h"
30 #include "lldb/Utility/Endian.h"
31 #include "lldb/Utility/Log.h"
32 #include "lldb/Utility/NameMatches.h"
33 #include "lldb/Utility/Status.h"
34 #include "lldb/Utility/StreamString.h"
36 #include "llvm/Support/Host.h"
39 extern char **environ;
43 using namespace lldb_private;
46 GetFreeBSDProcessArgs(const ProcessInstanceInfoMatch *match_info_ptr,
47 ProcessInstanceInfo &process_info) {
48 if (!process_info.ProcessIDIsValid())
51 int pid = process_info.GetProcessID();
53 int mib[4] = {CTL_KERN, KERN_PROC, KERN_PROC_ARGS, pid};
56 size_t arg_data_size = sizeof(arg_data);
57 if (::sysctl(mib, 4, arg_data, &arg_data_size, NULL, 0) != 0)
60 DataExtractor data(arg_data, arg_data_size, endian::InlHostByteOrder(),
62 lldb::offset_t offset = 0;
65 cstr = data.GetCStr(&offset);
69 // Get pathname for pid. If that fails fall back to argv[0].
70 char pathname[MAXPATHLEN];
71 size_t pathname_len = sizeof(pathname);
72 mib[2] = KERN_PROC_PATHNAME;
73 if (::sysctl(mib, 4, pathname, &pathname_len, NULL, 0) == 0)
74 process_info.GetExecutableFile().SetFile(pathname, FileSpec::Style::native);
76 process_info.GetExecutableFile().SetFile(cstr, FileSpec::Style::native);
78 if (!(match_info_ptr == NULL ||
79 NameMatches(process_info.GetExecutableFile().GetFilename().GetCString(),
80 match_info_ptr->GetNameMatchType(),
81 match_info_ptr->GetProcessInfo().GetName())))
84 Args &proc_args = process_info.GetArguments();
86 const uint8_t *p = data.PeekData(offset, 1);
87 while ((p != NULL) && (*p == '\0') && offset < arg_data_size) {
89 p = data.PeekData(offset, 1);
91 if (p == NULL || offset >= arg_data_size)
94 cstr = data.GetCStr(&offset);
98 proc_args.AppendArgument(llvm::StringRef(cstr));
104 static bool GetFreeBSDProcessCPUType(ProcessInstanceInfo &process_info) {
105 if (process_info.ProcessIDIsValid()) {
106 process_info.GetArchitecture() =
107 HostInfo::GetArchitecture(HostInfo::eArchKindDefault);
110 process_info.GetArchitecture().Clear();
114 static bool GetFreeBSDProcessUserAndGroup(ProcessInstanceInfo &process_info) {
115 struct kinfo_proc proc_kinfo;
116 size_t proc_kinfo_size;
117 const int pid = process_info.GetProcessID();
118 int mib[4] = {CTL_KERN, KERN_PROC, KERN_PROC_PID, pid};
120 if (!process_info.ProcessIDIsValid())
123 proc_kinfo_size = sizeof(struct kinfo_proc);
125 if (::sysctl(mib, 4, &proc_kinfo, &proc_kinfo_size, NULL, 0) != 0)
128 if (proc_kinfo_size == 0)
131 process_info.SetParentProcessID(proc_kinfo.ki_ppid);
132 process_info.SetUserID(proc_kinfo.ki_ruid);
133 process_info.SetGroupID(proc_kinfo.ki_rgid);
134 process_info.SetEffectiveUserID(proc_kinfo.ki_uid);
135 if (proc_kinfo.ki_ngroups > 0)
136 process_info.SetEffectiveGroupID(proc_kinfo.ki_groups[0]);
138 process_info.SetEffectiveGroupID(UINT32_MAX);
142 process_info.SetParentProcessID(LLDB_INVALID_PROCESS_ID);
143 process_info.SetUserID(UINT32_MAX);
144 process_info.SetGroupID(UINT32_MAX);
145 process_info.SetEffectiveUserID(UINT32_MAX);
146 process_info.SetEffectiveGroupID(UINT32_MAX);
150 uint32_t Host::FindProcesses(const ProcessInstanceInfoMatch &match_info,
151 ProcessInstanceInfoList &process_infos) {
152 const ::pid_t our_pid = ::getpid();
153 const ::uid_t our_uid = ::getuid();
154 std::vector<struct kinfo_proc> kinfos;
155 // Special case, if lldb is being run as root we can attach to anything.
156 bool all_users = match_info.GetMatchAllUsers() || (our_uid == 0);
158 int mib[3] = {CTL_KERN, KERN_PROC, KERN_PROC_ALL};
160 size_t pid_data_size = 0;
161 if (::sysctl(mib, 3, NULL, &pid_data_size, NULL, 0) != 0)
164 // Add a few extra in case a few more show up
165 const size_t estimated_pid_count =
166 (pid_data_size / sizeof(struct kinfo_proc)) + 10;
168 kinfos.resize(estimated_pid_count);
169 pid_data_size = kinfos.size() * sizeof(struct kinfo_proc);
171 if (::sysctl(mib, 3, &kinfos[0], &pid_data_size, NULL, 0) != 0)
174 const size_t actual_pid_count = (pid_data_size / sizeof(struct kinfo_proc));
176 for (size_t i = 0; i < actual_pid_count; i++) {
177 const struct kinfo_proc &kinfo = kinfos[i];
179 /* Make sure the user is acceptable */
180 if (!all_users && kinfo.ki_ruid != our_uid)
183 if (kinfo.ki_pid == our_pid || // Skip this process
184 kinfo.ki_pid == 0 || // Skip kernel (kernel pid is 0)
185 kinfo.ki_stat == SZOMB || // Zombies are bad
186 kinfo.ki_flag & P_TRACED || // Being debugged?
187 kinfo.ki_flag & P_WEXIT) // Working on exiting
190 // Every thread is a process in FreeBSD, but all the threads of a single
191 // process have the same pid. Do not store the process info in the result
192 // list if a process with given identifier is already registered there.
193 bool already_registered = false;
194 for (uint32_t pi = 0;
195 !already_registered && (const int)kinfo.ki_numthreads > 1 &&
196 pi < (const uint32_t)process_infos.GetSize();
199 (process_infos.GetProcessIDAtIndex(pi) == (uint32_t)kinfo.ki_pid);
201 if (already_registered)
204 ProcessInstanceInfo process_info;
205 process_info.SetProcessID(kinfo.ki_pid);
206 process_info.SetParentProcessID(kinfo.ki_ppid);
207 process_info.SetUserID(kinfo.ki_ruid);
208 process_info.SetGroupID(kinfo.ki_rgid);
209 process_info.SetEffectiveUserID(kinfo.ki_svuid);
210 process_info.SetEffectiveGroupID(kinfo.ki_svgid);
212 // Make sure our info matches before we go fetch the name and cpu type
213 if (match_info.Matches(process_info) &&
214 GetFreeBSDProcessArgs(&match_info, process_info)) {
215 GetFreeBSDProcessCPUType(process_info);
216 if (match_info.Matches(process_info))
217 process_infos.Append(process_info);
221 return process_infos.GetSize();
224 bool Host::GetProcessInfo(lldb::pid_t pid, ProcessInstanceInfo &process_info) {
225 process_info.SetProcessID(pid);
227 if (GetFreeBSDProcessArgs(NULL, process_info)) {
228 // should use libprocstat instead of going right into sysctl?
229 GetFreeBSDProcessCPUType(process_info);
230 GetFreeBSDProcessUserAndGroup(process_info);
234 process_info.Clear();
238 Environment Host::GetEnvironment() { return Environment(environ); }
240 Status Host::ShellExpandArguments(ProcessLaunchInfo &launch_info) {
241 return Status("unimplemented");