uint32_t
Host::FindProcesses (const ProcessInstanceInfoMatch &match_info, ProcessInstanceInfoList &process_infos)
{
process_infos.Clear();
AutoHandle snapshot(CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0));
if (!snapshot.IsValid())
return 0;
PROCESSENTRY32 pe = {0};
pe.dwSize = sizeof(PROCESSENTRY32);
if (Process32First(snapshot.get(), &pe))
{
do
{
AutoHandle handle(::OpenProcess(PROCESS_QUERY_LIMITED_INFORMATION, FALSE, pe.th32ProcessID), nullptr);
ProcessInstanceInfo process;
process.SetExecutableFile(FileSpec(pe.szExeFile, false), true);
process.SetProcessID(pe.th32ProcessID);
process.SetParentProcessID(pe.th32ParentProcessID);
GetProcessExecutableAndTriple(handle, process);
if (match_info.MatchAllProcesses() || match_info.Matches(process))
process_infos.Append(process);
} while (Process32Next(snapshot.get(), &pe));
}
return process_infos.GetSize();
}
static bool
GetNetBSDProcessCPUType (ProcessInstanceInfo &process_info)
{
if (process_info.ProcessIDIsValid())
{
process_info.GetArchitecture() = HostInfo::GetArchitecture(HostInfo::eArchKindDefault);
return true;
}
process_info.GetArchitecture().Clear();
return false;
}
static bool
GetFreeBSDProcessCPUType (ProcessInstanceInfo &process_info)
{
if (process_info.ProcessIDIsValid())
{
process_info.GetArchitecture() = Host::GetArchitecture (Host::eSystemDefaultArchitecture);
return true;
}
process_info.GetArchitecture().Clear();
return false;
}
static bool
GetNetBSDProcessArgs (const ProcessInstanceInfoMatch *match_info_ptr,
ProcessInstanceInfo &process_info)
{
if (!process_info.ProcessIDIsValid())
return false;
int pid = process_info.GetProcessID();
int mib[4] = { CTL_KERN, KERN_PROC_ARGS, pid, KERN_PROC_ARGV };
char arg_data[8192];
size_t arg_data_size = sizeof(arg_data);
if (::sysctl (mib, 4, arg_data, &arg_data_size , NULL, 0) != 0)
return false;
DataExtractor data (arg_data, arg_data_size, lldb::endian::InlHostByteOrder(), sizeof(void *));
lldb::offset_t offset = 0;
const char *cstr;
cstr = data.GetCStr (&offset);
if (!cstr)
return false;
process_info.GetExecutableFile().SetFile(cstr, false);
if (!(match_info_ptr == NULL ||
NameMatches (process_info.GetExecutableFile().GetFilename().GetCString(),
match_info_ptr->GetNameMatchType(),
match_info_ptr->GetProcessInfo().GetName())))
return false;
Args &proc_args = process_info.GetArguments();
while (1)
{
const uint8_t *p = data.PeekData(offset, 1);
while ((p != NULL) && (*p == '\0') && offset < arg_data_size)
{
++offset;
p = data.PeekData(offset, 1);
}
if (p == NULL || offset >= arg_data_size)
break;
cstr = data.GetCStr(&offset);
if (!cstr)
break;
proc_args.AppendArgument(cstr);
}
return true;
}
bool
ProcessElfCore::GetProcessInfo(ProcessInstanceInfo &info)
{
info.Clear();
info.SetProcessID(GetID());
info.SetArchitecture(GetArchitecture());
lldb::ModuleSP module_sp = GetTarget().GetExecutableModule();
if (module_sp)
{
const bool add_exe_file_as_first_arg = false;
info.SetExecutableFile(GetTarget().GetExecutableModule()->GetFileSpec(), add_exe_file_as_first_arg);
}
return true;
}
bool
Host::GetProcessInfo (lldb::pid_t pid, ProcessInstanceInfo &process_info)
{
process_info.SetProcessID(pid);
if (GetNetBSDProcessArgs(NULL, process_info))
{
GetNetBSDProcessCPUType(process_info);
GetNetBSDProcessUserAndGroup(process_info);
return true;
}
process_info.Clear();
return false;
}
bool
Host::GetProcessInfo (lldb::pid_t pid, ProcessInstanceInfo &process_info)
{
process_info.SetProcessID(pid);
if (GetFreeBSDProcessArgs(NULL, process_info))
{
// should use libprocstat instead of going right into sysctl?
GetFreeBSDProcessCPUType(process_info);
GetFreeBSDProcessUserAndGroup(process_info);
return true;
}
process_info.Clear();
return false;
}
bool
PlatformRemoteiOS::GetProcessInfo (lldb::pid_t pid, ProcessInstanceInfo &process_info)
{
// TODO: if connected, send a packet to get the remote process info
process_info.Clear();
return false;
}
bool
Host::GetProcessInfo (lldb::pid_t pid, ProcessInstanceInfo &process_info)
{
process_info.Clear();
AutoHandle handle(::OpenProcess(PROCESS_QUERY_INFORMATION | PROCESS_VM_READ, FALSE, pid),
nullptr);
if (!handle.IsValid())
return false;
process_info.SetProcessID(pid);
GetProcessExecutableAndTriple(handle, process_info);
// Need to read the PEB to get parent process and command line arguments.
return true;
}
static void
GetLinuxProcessUserAndGroup (lldb::pid_t pid, ProcessInstanceInfo &process_info, lldb::pid_t &tracerpid)
{
tracerpid = 0;
uint32_t rUid = UINT32_MAX; // Real User ID
uint32_t eUid = UINT32_MAX; // Effective User ID
uint32_t rGid = UINT32_MAX; // Real Group ID
uint32_t eGid = UINT32_MAX; // Effective Group ID
// Read the /proc/$PID/status file and parse the Uid:, Gid:, and TracerPid: fields.
lldb::DataBufferSP buf_sp = ReadProcPseudoFile (pid, "status");
static const char uid_token[] = "Uid:";
char *buf_uid = strstr ((char *)buf_sp->GetBytes(), uid_token);
if (buf_uid)
{
// Real, effective, saved set, and file system UIDs. Read the first two.
buf_uid += sizeof(uid_token);
rUid = strtol (buf_uid, &buf_uid, 10);
eUid = strtol (buf_uid, &buf_uid, 10);
}
static const char gid_token[] = "Gid:";
char *buf_gid = strstr ((char *)buf_sp->GetBytes(), gid_token);
if (buf_gid)
{
// Real, effective, saved set, and file system GIDs. Read the first two.
buf_gid += sizeof(gid_token);
rGid = strtol (buf_gid, &buf_gid, 10);
eGid = strtol (buf_gid, &buf_gid, 10);
}
static const char tracerpid_token[] = "TracerPid:";
char *buf_tracerpid = strstr((char *)buf_sp->GetBytes(), tracerpid_token);
if (buf_tracerpid)
{
// Tracer PID. 0 if we're not being debugged.
buf_tracerpid += sizeof(tracerpid_token);
tracerpid = strtol (buf_tracerpid, &buf_tracerpid, 10);
}
process_info.SetUserID (rUid);
process_info.SetEffectiveUserID (eUid);
process_info.SetGroupID (rGid);
process_info.SetEffectiveGroupID (eGid);
}
static bool
GetELFProcessCPUType (const char *exe_path, ProcessInstanceInfo &process_info)
{
// Clear the architecture.
process_info.GetArchitecture().Clear();
ModuleSpecList specs;
FileSpec filespec (exe_path, false);
const size_t num_specs = ObjectFile::GetModuleSpecifications (filespec, 0, 0, specs);
// GetModuleSpecifications() could fail if the executable has been deleted or is locked.
// But it shouldn't return more than 1 architecture.
assert(num_specs <= 1 && "Linux plugin supports only a single architecture");
if (num_specs == 1)
{
ModuleSpec module_spec;
if (specs.GetModuleSpecAtIndex (0, module_spec) && module_spec.GetArchitecture().IsValid())
{
process_info.GetArchitecture () = module_spec.GetArchitecture();
return true;
}
}
return false;
}
void GDBRemoteCommunicationServerCommon::CreateProcessInfoResponse(
const ProcessInstanceInfo &proc_info, StreamString &response) {
response.Printf(
"pid:%" PRIu64 ";ppid:%" PRIu64 ";uid:%i;gid:%i;euid:%i;egid:%i;",
proc_info.GetProcessID(), proc_info.GetParentProcessID(),
proc_info.GetUserID(), proc_info.GetGroupID(),
proc_info.GetEffectiveUserID(), proc_info.GetEffectiveGroupID());
response.PutCString("name:");
response.PutCStringAsRawHex8(proc_info.GetExecutableFile().GetCString());
response.PutChar(';');
const ArchSpec &proc_arch = proc_info.GetArchitecture();
if (proc_arch.IsValid()) {
const llvm::Triple &proc_triple = proc_arch.GetTriple();
response.PutCString("triple:");
response.PutCStringAsRawHex8(proc_triple.getTriple().c_str());
response.PutChar(';');
}
}
static void
CreateProcessInfoResponse (const ProcessInstanceInfo &proc_info, StreamString &response)
{
response.Printf ("pid:%llu;ppid:%llu;uid:%i;gid:%i;euid:%i;egid:%i;",
proc_info.GetProcessID(),
proc_info.GetParentProcessID(),
proc_info.GetUserID(),
proc_info.GetGroupID(),
proc_info.GetEffectiveUserID(),
proc_info.GetEffectiveGroupID());
response.PutCString ("name:");
response.PutCStringAsRawHex8(proc_info.GetName());
response.PutChar(';');
const ArchSpec &proc_arch = proc_info.GetArchitecture();
if (proc_arch.IsValid())
{
const llvm::Triple &proc_triple = proc_arch.GetTriple();
response.PutCString("triple:");
response.PutCStringAsRawHex8(proc_triple.getTriple().c_str());
response.PutChar(';');
}
}
static bool GetProcessAndStatInfo(::pid_t pid,
ProcessInstanceInfo &process_info,
ProcessState &State, ::pid_t &tracerpid) {
tracerpid = 0;
process_info.Clear();
Log *log(GetLogIfAllCategoriesSet(LIBLLDB_LOG_PROCESS));
// We can't use getProcFile here because proc/[pid]/exe is a symbolic link.
llvm::SmallString<64> ProcExe;
(llvm::Twine("/proc/") + llvm::Twine(pid) + "/exe").toVector(ProcExe);
std::string ExePath(PATH_MAX, '\0');
ssize_t len = readlink(ProcExe.c_str(), &ExePath[0], PATH_MAX);
if (len <= 0) {
LLDB_LOG(log, "failed to read link exe link for {0}: {1}", pid,
Status(errno, eErrorTypePOSIX));
return false;
}
ExePath.resize(len);
// If the binary has been deleted, the link name has " (deleted)" appended.
// Remove if there.
llvm::StringRef PathRef = ExePath;
PathRef.consume_back(" (deleted)");
GetELFProcessCPUType(PathRef, process_info);
// Get the process environment.
auto BufferOrError = getProcFile(pid, "environ");
if (!BufferOrError)
return false;
std::unique_ptr<llvm::MemoryBuffer> Environ = std::move(*BufferOrError);
// Get the command line used to start the process.
BufferOrError = getProcFile(pid, "cmdline");
if (!BufferOrError)
return false;
std::unique_ptr<llvm::MemoryBuffer> Cmdline = std::move(*BufferOrError);
// Get User and Group IDs and get tracer pid.
if (!GetStatusInfo(pid, process_info, State, tracerpid))
return false;
process_info.SetProcessID(pid);
process_info.GetExecutableFile().SetFile(PathRef, false);
process_info.GetArchitecture().MergeFrom(HostInfo::GetArchitecture());
llvm::StringRef Rest = Environ->getBuffer();
while (!Rest.empty()) {
llvm::StringRef Var;
std::tie(Var, Rest) = Rest.split('\0');
process_info.GetEnvironmentEntries().AppendArgument(Var);
}
llvm::StringRef Arg0;
std::tie(Arg0, Rest) = Cmdline->getBuffer().split('\0');
process_info.SetArg0(Arg0);
while (!Rest.empty()) {
llvm::StringRef Arg;
std::tie(Arg, Rest) = Rest.split('\0');
process_info.GetArguments().AppendArgument(Arg);
}
return true;
}
static bool
GetNetBSDProcessUserAndGroup(ProcessInstanceInfo &process_info)
{
::kvm_t *kdp;
char errbuf[_POSIX2_LINE_MAX]; /* XXX: error string unused */
struct ::kinfo_proc2 *proc_kinfo;
const int pid = process_info.GetProcessID();
int nproc;
if (!process_info.ProcessIDIsValid())
goto error;
if ((kdp = ::kvm_openfiles(NULL, NULL, NULL, KVM_NO_FILES, errbuf)) == NULL)
goto error;
if ((proc_kinfo = ::kvm_getproc2(kdp, KERN_PROC_PID, pid,
sizeof(struct ::kinfo_proc2),
&nproc)) == NULL) {
::kvm_close(kdp);
goto error;
}
if (nproc < 1) {
::kvm_close(kdp); /* XXX: we don't check for error here */
goto error;
}
process_info.SetParentProcessID (proc_kinfo->p_ppid);
process_info.SetUserID (proc_kinfo->p_ruid);
process_info.SetGroupID (proc_kinfo->p_rgid);
process_info.SetEffectiveUserID (proc_kinfo->p_uid);
process_info.SetEffectiveGroupID (proc_kinfo->p_gid);
::kvm_close(kdp); /* XXX: we don't check for error here */
return true;
error:
process_info.SetParentProcessID (LLDB_INVALID_PROCESS_ID);
process_info.SetUserID (UINT32_MAX);
process_info.SetGroupID (UINT32_MAX);
process_info.SetEffectiveUserID (UINT32_MAX);
process_info.SetEffectiveGroupID (UINT32_MAX);
return false;
}
bool
Host::GetProcessInfo (lldb::pid_t pid, ProcessInstanceInfo &process_info)
{
process_info.Clear();
return false;
}
static bool
GetFreeBSDProcessUserAndGroup(ProcessInstanceInfo &process_info)
{
struct kinfo_proc proc_kinfo;
size_t proc_kinfo_size;
if (process_info.ProcessIDIsValid())
{
int mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_PID,
(int)process_info.GetProcessID() };
proc_kinfo_size = sizeof(struct kinfo_proc);
if (::sysctl (mib, 4, &proc_kinfo, &proc_kinfo_size, NULL, 0) == 0)
{
if (proc_kinfo_size > 0)
{
process_info.SetParentProcessID (proc_kinfo.ki_ppid);
process_info.SetUserID (proc_kinfo.ki_ruid);
process_info.SetGroupID (proc_kinfo.ki_rgid);
process_info.SetEffectiveUserID (proc_kinfo.ki_uid);
if (proc_kinfo.ki_ngroups > 0)
process_info.SetEffectiveGroupID (proc_kinfo.ki_groups[0]);
else
process_info.SetEffectiveGroupID (UINT32_MAX);
return true;
}
}
}
process_info.SetParentProcessID (LLDB_INVALID_PROCESS_ID);
process_info.SetUserID (UINT32_MAX);
process_info.SetGroupID (UINT32_MAX);
process_info.SetEffectiveUserID (UINT32_MAX);
process_info.SetEffectiveGroupID (UINT32_MAX);
return false;
}
void GDBRemoteCommunicationServerCommon::
CreateProcessInfoResponse_DebugServerStyle(
const ProcessInstanceInfo &proc_info, StreamString &response) {
response.Printf("pid:%" PRIx64 ";parent-pid:%" PRIx64
";real-uid:%x;real-gid:%x;effective-uid:%x;effective-gid:%x;",
proc_info.GetProcessID(), proc_info.GetParentProcessID(),
proc_info.GetUserID(), proc_info.GetGroupID(),
proc_info.GetEffectiveUserID(),
proc_info.GetEffectiveGroupID());
const ArchSpec &proc_arch = proc_info.GetArchitecture();
if (proc_arch.IsValid()) {
const llvm::Triple &proc_triple = proc_arch.GetTriple();
#if defined(__APPLE__)
// We'll send cputype/cpusubtype.
const uint32_t cpu_type = proc_arch.GetMachOCPUType();
if (cpu_type != 0)
response.Printf("cputype:%" PRIx32 ";", cpu_type);
const uint32_t cpu_subtype = proc_arch.GetMachOCPUSubType();
if (cpu_subtype != 0)
response.Printf("cpusubtype:%" PRIx32 ";", cpu_subtype);
const std::string vendor = proc_triple.getVendorName();
if (!vendor.empty())
response.Printf("vendor:%s;", vendor.c_str());
#else
// We'll send the triple.
response.PutCString("triple:");
response.PutCStringAsRawHex8(proc_triple.getTriple().c_str());
response.PutChar(';');
#endif
std::string ostype = proc_triple.getOSName();
// Adjust so ostype reports ios for Apple/ARM and Apple/ARM64.
if (proc_triple.getVendor() == llvm::Triple::Apple) {
switch (proc_triple.getArch()) {
case llvm::Triple::arm:
case llvm::Triple::thumb:
case llvm::Triple::aarch64:
ostype = "ios";
break;
default:
// No change.
break;
}
}
response.Printf("ostype:%s;", ostype.c_str());
switch (proc_arch.GetByteOrder()) {
case lldb::eByteOrderLittle:
response.PutCString("endian:little;");
break;
case lldb::eByteOrderBig:
response.PutCString("endian:big;");
break;
case lldb::eByteOrderPDP:
response.PutCString("endian:pdp;");
break;
default:
// Nothing.
break;
}
// In case of MIPS64, pointer size is depend on ELF ABI
// For N32 the pointer size is 4 and for N64 it is 8
std::string abi = proc_arch.GetTargetABI();
if (!abi.empty())
response.Printf("elf_abi:%s;", abi.c_str());
response.Printf("ptrsize:%d;", proc_arch.GetAddressByteSize());
}
}
static bool
GetProcessAndStatInfo (lldb::pid_t pid, ProcessInstanceInfo &process_info, ProcessStatInfo &stat_info, lldb::pid_t &tracerpid)
{
tracerpid = 0;
process_info.Clear();
::memset (&stat_info, 0, sizeof(stat_info));
stat_info.ppid = LLDB_INVALID_PROCESS_ID;
// Use special code here because proc/[pid]/exe is a symbolic link.
char link_path[PATH_MAX];
char exe_path[PATH_MAX] = "";
if (snprintf (link_path, PATH_MAX, "/proc/%" PRIu64 "/exe", pid) <= 0)
return false;
ssize_t len = readlink (link_path, exe_path, sizeof(exe_path) - 1);
if (len <= 0)
return false;
// readlink does not append a null byte.
exe_path[len] = 0;
// If the binary has been deleted, the link name has " (deleted)" appended.
// Remove if there.
static const ssize_t deleted_len = strlen(" (deleted)");
if (len > deleted_len &&
!strcmp(exe_path + len - deleted_len, " (deleted)"))
{
exe_path[len - deleted_len] = 0;
}
else
{
GetELFProcessCPUType (exe_path, process_info);
}
process_info.SetProcessID(pid);
process_info.GetExecutableFile().SetFile(exe_path, false);
lldb::DataBufferSP buf_sp;
// Get the process environment.
buf_sp = ReadProcPseudoFile(pid, "environ");
Args &info_env = process_info.GetEnvironmentEntries();
char *next_var = (char *)buf_sp->GetBytes();
char *end_buf = next_var + buf_sp->GetByteSize();
while (next_var < end_buf && 0 != *next_var)
{
info_env.AppendArgument(next_var);
next_var += strlen(next_var) + 1;
}
// Get the commond line used to start the process.
buf_sp = ReadProcPseudoFile(pid, "cmdline");
// Grab Arg0 first.
char *cmd = (char *)buf_sp->GetBytes();
process_info.SetArg0(cmd);
// Now process any remaining arguments.
Args &info_args = process_info.GetArguments();
char *next_arg = cmd + strlen(cmd) + 1;
end_buf = cmd + buf_sp->GetByteSize();
while (next_arg < end_buf && 0 != *next_arg)
{
info_args.AppendArgument(next_arg);
next_arg += strlen(next_arg) + 1;
}
// Read /proc/$PID/stat to get our parent pid.
if (ReadProcPseudoFileStat (pid, stat_info))
{
process_info.SetParentProcessID (stat_info.ppid);
}
// Get User and Group IDs and get tracer pid.
GetLinuxProcessUserAndGroup (pid, process_info, tracerpid);
return true;
}
static bool GetStatusInfo(::pid_t Pid, ProcessInstanceInfo &ProcessInfo,
ProcessState &State, ::pid_t &TracerPid) {
auto BufferOrError = getProcFile(Pid, "status");
if (!BufferOrError)
return false;
llvm::StringRef Rest = BufferOrError.get()->getBuffer();
while(!Rest.empty()) {
llvm::StringRef Line;
std::tie(Line, Rest) = Rest.split('\n');
if (Line.consume_front("Gid:")) {
// Real, effective, saved set, and file system GIDs. Read the first two.
Line = Line.ltrim();
uint32_t RGid, EGid;
Line.consumeInteger(10, RGid);
Line = Line.ltrim();
Line.consumeInteger(10, EGid);
ProcessInfo.SetGroupID(RGid);
ProcessInfo.SetEffectiveGroupID(EGid);
} else if (Line.consume_front("Uid:")) {
// Real, effective, saved set, and file system UIDs. Read the first two.
Line = Line.ltrim();
uint32_t RUid, EUid;
Line.consumeInteger(10, RUid);
Line = Line.ltrim();
Line.consumeInteger(10, EUid);
ProcessInfo.SetUserID(RUid);
ProcessInfo.SetEffectiveUserID(EUid);
} else if (Line.consume_front("PPid:")) {
::pid_t PPid;
Line.ltrim().consumeInteger(10, PPid);
ProcessInfo.SetParentProcessID(PPid);
} else if (Line.consume_front("State:")) {
char S = Line.ltrim().front();
switch (S) {
case 'R':
State = ProcessState::Running;
break;
case 'S':
State = ProcessState::Sleeping;
break;
case 'D':
State = ProcessState::DiskSleep;
break;
case 'Z':
State = ProcessState::Zombie;
break;
case 'T':
State = ProcessState::TracedOrStopped;
break;
case 'W':
State = ProcessState::Paging;
break;
}
} else if (Line.consume_front("TracerPid:")) {
Line = Line.ltrim();
Line.consumeInteger(10, TracerPid);
}
}
return true;
}
