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-rw-r--r--source/Host/linux/Host.cpp297
1 files changed, 0 insertions, 297 deletions
diff --git a/source/Host/linux/Host.cpp b/source/Host/linux/Host.cpp
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index bd596f8cbfe0..000000000000
--- a/source/Host/linux/Host.cpp
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-//===-- source/Host/linux/Host.cpp ------------------------------*- C++ -*-===//
-//
-// The LLVM Compiler Infrastructure
-//
-// This file is distributed under the University of Illinois Open Source
-// License. See LICENSE.TXT for details.
-//
-//===----------------------------------------------------------------------===//
-
-#include <dirent.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <string.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <sys/utsname.h>
-#include <unistd.h>
-
-#include "llvm/Object/ELF.h"
-#include "llvm/Support/ScopedPrinter.h"
-
-#include "lldb/Target/Process.h"
-#include "lldb/Utility/Log.h"
-#include "lldb/Utility/Status.h"
-
-#include "lldb/Host/FileSystem.h"
-#include "lldb/Host/Host.h"
-#include "lldb/Host/HostInfo.h"
-#include "lldb/Host/linux/Support.h"
-#include "lldb/Utility/DataExtractor.h"
-
-using namespace lldb;
-using namespace lldb_private;
-
-namespace {
-enum class ProcessState {
- Unknown,
- DiskSleep,
- Paging,
- Running,
- Sleeping,
- TracedOrStopped,
- Zombie,
-};
-}
-
-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;
-}
-
-static bool IsDirNumeric(const char *dname) {
- for (; *dname; dname++) {
- if (!isdigit(*dname))
- return false;
- }
- return true;
-}
-
-static ArchSpec GetELFProcessCPUType(llvm::StringRef exe_path) {
- Log *log = GetLogIfAllCategoriesSet(LIBLLDB_LOG_HOST);
-
- auto buffer_sp = FileSystem::Instance().CreateDataBuffer(exe_path, 0x20, 0);
- if (!buffer_sp)
- return ArchSpec();
-
- uint8_t exe_class =
- llvm::object::getElfArchType(
- {buffer_sp->GetChars(), size_t(buffer_sp->GetByteSize())})
- .first;
-
- switch (exe_class) {
- case llvm::ELF::ELFCLASS32:
- return HostInfo::GetArchitecture(HostInfo::eArchKind32);
- case llvm::ELF::ELFCLASS64:
- return HostInfo::GetArchitecture(HostInfo::eArchKind64);
- default:
- LLDB_LOG(log, "Unknown elf class ({0}) in file {1}", exe_class, exe_path);
- return ArchSpec();
- }
-}
-
-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)");
-
- process_info.SetArchitecture(GetELFProcessCPUType(PathRef));
-
- // 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, FileSpec::Style::native);
-
- llvm::StringRef Rest = Environ->getBuffer();
- while (!Rest.empty()) {
- llvm::StringRef Var;
- std::tie(Var, Rest) = Rest.split('\0');
- process_info.GetEnvironment().insert(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;
-}
-
-uint32_t Host::FindProcesses(const ProcessInstanceInfoMatch &match_info,
- ProcessInstanceInfoList &process_infos) {
- static const char procdir[] = "/proc/";
-
- DIR *dirproc = opendir(procdir);
- if (dirproc) {
- struct dirent *direntry = NULL;
- const uid_t our_uid = getuid();
- const lldb::pid_t our_pid = getpid();
- bool all_users = match_info.GetMatchAllUsers();
-
- while ((direntry = readdir(dirproc)) != NULL) {
- if (direntry->d_type != DT_DIR || !IsDirNumeric(direntry->d_name))
- continue;
-
- lldb::pid_t pid = atoi(direntry->d_name);
-
- // Skip this process.
- if (pid == our_pid)
- continue;
-
- ::pid_t tracerpid;
- ProcessState State;
- ProcessInstanceInfo process_info;
-
- if (!GetProcessAndStatInfo(pid, process_info, State, tracerpid))
- continue;
-
- // Skip if process is being debugged.
- if (tracerpid != 0)
- continue;
-
- if (State == ProcessState::Zombie)
- continue;
-
- // Check for user match if we're not matching all users and not running
- // as root.
- if (!all_users && (our_uid != 0) && (process_info.GetUserID() != our_uid))
- continue;
-
- if (match_info.Matches(process_info)) {
- process_infos.Append(process_info);
- }
- }
-
- closedir(dirproc);
- }
-
- return process_infos.GetSize();
-}
-
-bool Host::FindProcessThreads(const lldb::pid_t pid, TidMap &tids_to_attach) {
- bool tids_changed = false;
- static const char procdir[] = "/proc/";
- static const char taskdir[] = "/task/";
- std::string process_task_dir = procdir + llvm::to_string(pid) + taskdir;
- DIR *dirproc = opendir(process_task_dir.c_str());
-
- if (dirproc) {
- struct dirent *direntry = NULL;
- while ((direntry = readdir(dirproc)) != NULL) {
- if (direntry->d_type != DT_DIR || !IsDirNumeric(direntry->d_name))
- continue;
-
- lldb::tid_t tid = atoi(direntry->d_name);
- TidMap::iterator it = tids_to_attach.find(tid);
- if (it == tids_to_attach.end()) {
- tids_to_attach.insert(TidPair(tid, false));
- tids_changed = true;
- }
- }
- closedir(dirproc);
- }
-
- return tids_changed;
-}
-
-bool Host::GetProcessInfo(lldb::pid_t pid, ProcessInstanceInfo &process_info) {
- ::pid_t tracerpid;
- ProcessState State;
- return GetProcessAndStatInfo(pid, process_info, State, tracerpid);
-}
-
-Environment Host::GetEnvironment() { return Environment(environ); }
-
-Status Host::ShellExpandArguments(ProcessLaunchInfo &launch_info) {
- return Status("unimplemented");
-}
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