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1490 lines
50 KiB
1490 lines
50 KiB
//===-- Host.mm -------------------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "lldb/Host/Host.h"
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#include "PosixSpawnResponsible.h"
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#include <AvailabilityMacros.h>
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#include <TargetConditionals.h>
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#if TARGET_OS_OSX
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#define __XPC_PRIVATE_H__
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#include <xpc/xpc.h>
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#define LaunchUsingXPCRightName "com.apple.lldb.RootDebuggingXPCService"
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// These XPC messaging keys are used for communication between Host.mm and the
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// XPC service.
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#define LauncherXPCServiceAuthKey "auth-key"
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#define LauncherXPCServiceArgPrefxKey "arg"
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#define LauncherXPCServiceEnvPrefxKey "env"
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#define LauncherXPCServiceCPUTypeKey "cpuType"
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#define LauncherXPCServicePosixspawnFlagsKey "posixspawnFlags"
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#define LauncherXPCServiceStdInPathKeyKey "stdInPath"
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#define LauncherXPCServiceStdOutPathKeyKey "stdOutPath"
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#define LauncherXPCServiceStdErrPathKeyKey "stdErrPath"
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#define LauncherXPCServiceChildPIDKey "childPID"
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#define LauncherXPCServiceErrorTypeKey "errorType"
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#define LauncherXPCServiceCodeTypeKey "errorCode"
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#endif
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#include "llvm/Support/Host.h"
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#include <asl.h>
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#include <crt_externs.h>
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#include <grp.h>
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#include <libproc.h>
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#include <pwd.h>
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#include <spawn.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/proc.h>
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#include <sys/stat.h>
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#include <sys/sysctl.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include "lldb/Host/ConnectionFileDescriptor.h"
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#include "lldb/Host/FileSystem.h"
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#include "lldb/Host/HostInfo.h"
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#include "lldb/Host/ProcessLaunchInfo.h"
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#include "lldb/Host/ThreadLauncher.h"
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#include "lldb/Utility/ArchSpec.h"
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#include "lldb/Utility/DataBufferHeap.h"
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#include "lldb/Utility/DataExtractor.h"
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#include "lldb/Utility/Endian.h"
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#include "lldb/Utility/FileSpec.h"
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#include "lldb/Utility/Log.h"
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#include "lldb/Utility/NameMatches.h"
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#include "lldb/Utility/ProcessInfo.h"
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#include "lldb/Utility/StreamString.h"
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#include "lldb/Utility/StructuredData.h"
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#include "lldb/lldb-defines.h"
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#include "llvm/ADT/ScopeExit.h"
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#include "llvm/Support/Errno.h"
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#include "llvm/Support/FileSystem.h"
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#include "../cfcpp/CFCBundle.h"
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#include "../cfcpp/CFCMutableArray.h"
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#include "../cfcpp/CFCMutableDictionary.h"
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#include "../cfcpp/CFCReleaser.h"
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#include "../cfcpp/CFCString.h"
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#include <objc/objc-auto.h>
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#include <CoreFoundation/CoreFoundation.h>
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#include <Foundation/Foundation.h>
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#ifndef _POSIX_SPAWN_DISABLE_ASLR
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#define _POSIX_SPAWN_DISABLE_ASLR 0x0100
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#endif
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extern "C" {
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int __pthread_chdir(const char *path);
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int __pthread_fchdir(int fildes);
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}
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using namespace lldb;
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using namespace lldb_private;
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bool Host::GetBundleDirectory(const FileSpec &file,
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FileSpec &bundle_directory) {
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#if defined(__APPLE__)
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if (FileSystem::Instance().IsDirectory(file)) {
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char path[PATH_MAX];
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if (file.GetPath(path, sizeof(path))) {
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CFCBundle bundle(path);
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if (bundle.GetPath(path, sizeof(path))) {
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bundle_directory.SetFile(path, FileSpec::Style::native);
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return true;
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}
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}
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}
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#endif
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bundle_directory.Clear();
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return false;
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}
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bool Host::ResolveExecutableInBundle(FileSpec &file) {
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#if defined(__APPLE__)
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if (FileSystem::Instance().IsDirectory(file)) {
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char path[PATH_MAX];
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if (file.GetPath(path, sizeof(path))) {
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CFCBundle bundle(path);
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CFCReleaser<CFURLRef> url(bundle.CopyExecutableURL());
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if (url.get()) {
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if (::CFURLGetFileSystemRepresentation(url.get(), YES, (UInt8 *)path,
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sizeof(path))) {
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file.SetFile(path, FileSpec::Style::native);
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return true;
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}
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}
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}
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}
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#endif
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return false;
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}
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#if TARGET_OS_OSX
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static void *AcceptPIDFromInferior(void *arg) {
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const char *connect_url = (const char *)arg;
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ConnectionFileDescriptor file_conn;
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Status error;
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if (file_conn.Connect(connect_url, &error) == eConnectionStatusSuccess) {
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char pid_str[256];
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::memset(pid_str, 0, sizeof(pid_str));
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ConnectionStatus status;
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const size_t pid_str_len = file_conn.Read(
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pid_str, sizeof(pid_str), std::chrono::seconds(0), status, NULL);
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if (pid_str_len > 0) {
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int pid = atoi(pid_str);
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return (void *)(intptr_t)pid;
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}
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}
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return NULL;
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}
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const char *applscript_in_new_tty = "tell application \"Terminal\"\n"
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" activate\n"
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" do script \"/bin/bash -c '%s';exit\"\n"
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"end tell\n";
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const char *applscript_in_existing_tty = "\
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set the_shell_script to \"/bin/bash -c '%s';exit\"\n\
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tell application \"Terminal\"\n\
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repeat with the_window in (get windows)\n\
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repeat with the_tab in tabs of the_window\n\
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set the_tty to tty in the_tab\n\
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if the_tty contains \"%s\" then\n\
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if the_tab is not busy then\n\
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set selected of the_tab to true\n\
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set frontmost of the_window to true\n\
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do script the_shell_script in the_tab\n\
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return\n\
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end if\n\
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end if\n\
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end repeat\n\
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end repeat\n\
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do script the_shell_script\n\
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end tell\n";
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static Status
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LaunchInNewTerminalWithAppleScript(const char *exe_path,
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ProcessLaunchInfo &launch_info) {
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Status error;
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char unix_socket_name[PATH_MAX] = "/tmp/XXXXXX";
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if (::mktemp(unix_socket_name) == NULL) {
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error.SetErrorString("failed to make temporary path for a unix socket");
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return error;
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}
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StreamString command;
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FileSpec darwin_debug_file_spec = HostInfo::GetSupportExeDir();
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if (!darwin_debug_file_spec) {
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error.SetErrorString("can't locate the 'darwin-debug' executable");
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return error;
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}
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darwin_debug_file_spec.GetFilename().SetCString("darwin-debug");
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if (!FileSystem::Instance().Exists(darwin_debug_file_spec)) {
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error.SetErrorStringWithFormat(
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"the 'darwin-debug' executable doesn't exists at '%s'",
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darwin_debug_file_spec.GetPath().c_str());
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return error;
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}
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char launcher_path[PATH_MAX];
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darwin_debug_file_spec.GetPath(launcher_path, sizeof(launcher_path));
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const ArchSpec &arch_spec = launch_info.GetArchitecture();
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// Only set the architecture if it is valid and if it isn't Haswell (x86_64h).
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if (arch_spec.IsValid() &&
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arch_spec.GetCore() != ArchSpec::eCore_x86_64_x86_64h)
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command.Printf("arch -arch %s ", arch_spec.GetArchitectureName());
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command.Printf("'%s' --unix-socket=%s", launcher_path, unix_socket_name);
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if (arch_spec.IsValid())
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command.Printf(" --arch=%s", arch_spec.GetArchitectureName());
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FileSpec working_dir{launch_info.GetWorkingDirectory()};
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if (working_dir)
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command.Printf(" --working-dir '%s'", working_dir.GetCString());
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else {
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char cwd[PATH_MAX];
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if (getcwd(cwd, PATH_MAX))
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command.Printf(" --working-dir '%s'", cwd);
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}
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if (launch_info.GetFlags().Test(eLaunchFlagDisableASLR))
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command.PutCString(" --disable-aslr");
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// We are launching on this host in a terminal. So compare the environment on
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// the host to what is supplied in the launch_info. Any items that aren't in
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// the host environment need to be sent to darwin-debug. If we send all
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// environment entries, we might blow the max command line length, so we only
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// send user modified entries.
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Environment host_env = Host::GetEnvironment();
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for (const auto &KV : launch_info.GetEnvironment()) {
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auto host_entry = host_env.find(KV.first());
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if (host_entry == host_env.end() || host_entry->second != KV.second)
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command.Format(" --env='{0}'", Environment::compose(KV));
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}
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command.PutCString(" -- ");
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const char **argv = launch_info.GetArguments().GetConstArgumentVector();
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if (argv) {
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for (size_t i = 0; argv[i] != NULL; ++i) {
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if (i == 0)
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command.Printf(" '%s'", exe_path);
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else
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command.Printf(" '%s'", argv[i]);
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}
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} else {
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command.Printf(" '%s'", exe_path);
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}
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command.PutCString(" ; echo Process exited with status $?");
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if (launch_info.GetFlags().Test(lldb::eLaunchFlagCloseTTYOnExit))
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command.PutCString(" ; exit");
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StreamString applescript_source;
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applescript_source.Printf(applscript_in_new_tty,
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command.GetString().str().c_str());
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NSAppleScript *applescript = [[NSAppleScript alloc]
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initWithSource:[NSString stringWithCString:applescript_source.GetString()
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.str()
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.c_str()
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encoding:NSUTF8StringEncoding]];
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lldb::pid_t pid = LLDB_INVALID_PROCESS_ID;
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Status lldb_error;
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// Sleep and wait a bit for debugserver to start to listen...
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ConnectionFileDescriptor file_conn;
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char connect_url[128];
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::snprintf(connect_url, sizeof(connect_url), "unix-accept://%s",
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unix_socket_name);
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// Spawn a new thread to accept incoming connection on the connect_url
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// so we can grab the pid from the inferior. We have to do this because we
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// are sending an AppleScript that will launch a process in Terminal.app,
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// in a shell and the shell will fork/exec a couple of times before we get
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// to the process that we wanted to launch. So when our process actually
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// gets launched, we will handshake with it and get the process ID for it.
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llvm::Expected<HostThread> accept_thread = ThreadLauncher::LaunchThread(
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unix_socket_name, AcceptPIDFromInferior, connect_url);
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if (!accept_thread)
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return Status(accept_thread.takeError());
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[applescript executeAndReturnError:nil];
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thread_result_t accept_thread_result = NULL;
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lldb_error = accept_thread->Join(&accept_thread_result);
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if (lldb_error.Success() && accept_thread_result) {
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pid = (intptr_t)accept_thread_result;
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}
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llvm::sys::fs::remove(unix_socket_name);
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[applescript release];
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if (pid != LLDB_INVALID_PROCESS_ID)
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launch_info.SetProcessID(pid);
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return error;
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}
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#endif // TARGET_OS_OSX
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bool Host::OpenFileInExternalEditor(const FileSpec &file_spec,
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uint32_t line_no) {
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#if !TARGET_OS_OSX
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return false;
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#else // !TARGET_OS_OSX
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// We attach this to an 'odoc' event to specify a particular selection
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typedef struct {
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int16_t reserved0; // must be zero
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int16_t fLineNumber;
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int32_t fSelStart;
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int32_t fSelEnd;
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uint32_t reserved1; // must be zero
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uint32_t reserved2; // must be zero
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} BabelAESelInfo;
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Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_HOST));
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char file_path[PATH_MAX];
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file_spec.GetPath(file_path, PATH_MAX);
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CFCString file_cfstr(file_path, kCFStringEncodingUTF8);
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CFCReleaser<CFURLRef> file_URL(::CFURLCreateWithFileSystemPath(
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NULL, file_cfstr.get(), kCFURLPOSIXPathStyle, false));
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LLDB_LOGF(log,
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"Sending source file: \"%s\" and line: %d to external editor.\n",
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file_path, line_no);
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long error;
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BabelAESelInfo file_and_line_info = {
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0, // reserved0
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(int16_t)(line_no - 1), // fLineNumber (zero based line number)
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1, // fSelStart
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1024, // fSelEnd
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0, // reserved1
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0 // reserved2
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};
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AEKeyDesc file_and_line_desc;
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error = ::AECreateDesc(typeUTF8Text, &file_and_line_info,
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sizeof(file_and_line_info),
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&(file_and_line_desc.descContent));
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if (error != noErr) {
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LLDB_LOGF(log, "Error creating AEDesc: %ld.\n", error);
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return false;
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}
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file_and_line_desc.descKey = keyAEPosition;
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static std::string g_app_name;
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static FSRef g_app_fsref;
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LSApplicationParameters app_params;
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::memset(&app_params, 0, sizeof(app_params));
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app_params.flags =
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kLSLaunchDefaults | kLSLaunchDontAddToRecents | kLSLaunchDontSwitch;
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char *external_editor = ::getenv("LLDB_EXTERNAL_EDITOR");
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if (external_editor) {
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LLDB_LOGF(log, "Looking for external editor \"%s\".\n", external_editor);
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if (g_app_name.empty() ||
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strcmp(g_app_name.c_str(), external_editor) != 0) {
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CFCString editor_name(external_editor, kCFStringEncodingUTF8);
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error = ::LSFindApplicationForInfo(kLSUnknownCreator, NULL,
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editor_name.get(), &g_app_fsref, NULL);
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// If we found the app, then store away the name so we don't have to
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// re-look it up.
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if (error != noErr) {
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LLDB_LOGF(log,
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"Could not find External Editor application, error: %ld.\n",
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error);
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return false;
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}
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}
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app_params.application = &g_app_fsref;
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}
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ProcessSerialNumber psn;
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CFCReleaser<CFArrayRef> file_array(
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CFArrayCreate(NULL, (const void **)file_URL.ptr_address(false), 1, NULL));
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error = ::LSOpenURLsWithRole(file_array.get(), kLSRolesAll,
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&file_and_line_desc, &app_params, &psn, 1);
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AEDisposeDesc(&(file_and_line_desc.descContent));
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if (error != noErr) {
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LLDB_LOGF(log, "LSOpenURLsWithRole failed, error: %ld.\n", error);
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return false;
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}
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return true;
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#endif // TARGET_OS_OSX
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}
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Environment Host::GetEnvironment() { return Environment(*_NSGetEnviron()); }
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static bool GetMacOSXProcessCPUType(ProcessInstanceInfo &process_info) {
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if (process_info.ProcessIDIsValid()) {
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// Make a new mib to stay thread safe
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int mib[CTL_MAXNAME] = {
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0,
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};
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size_t mib_len = CTL_MAXNAME;
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if (::sysctlnametomib("sysctl.proc_cputype", mib, &mib_len))
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return false;
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mib[mib_len] = process_info.GetProcessID();
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mib_len++;
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cpu_type_t cpu, sub = 0;
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size_t len = sizeof(cpu);
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if (::sysctl(mib, mib_len, &cpu, &len, 0, 0) == 0) {
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switch (cpu) {
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case CPU_TYPE_I386:
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sub = CPU_SUBTYPE_I386_ALL;
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break;
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case CPU_TYPE_X86_64:
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sub = CPU_SUBTYPE_X86_64_ALL;
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break;
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#if defined(CPU_TYPE_ARM64) && defined(CPU_SUBTYPE_ARM64_ALL)
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case CPU_TYPE_ARM64:
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sub = CPU_SUBTYPE_ARM64_ALL;
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break;
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#endif
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#if defined(CPU_TYPE_ARM64_32) && defined(CPU_SUBTYPE_ARM64_32_ALL)
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case CPU_TYPE_ARM64_32:
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sub = CPU_SUBTYPE_ARM64_32_ALL;
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break;
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#endif
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case CPU_TYPE_ARM: {
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// Note that we fetched the cpu type from the PROCESS but we can't get a
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// cpusubtype of the
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// process -- we can only get the host's cpu subtype.
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uint32_t cpusubtype = 0;
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len = sizeof(cpusubtype);
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if (::sysctlbyname("hw.cpusubtype", &cpusubtype, &len, NULL, 0) == 0)
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sub = cpusubtype;
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bool host_cpu_is_64bit;
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uint32_t is64bit_capable;
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size_t is64bit_capable_len = sizeof(is64bit_capable);
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host_cpu_is_64bit =
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sysctlbyname("hw.cpu64bit_capable", &is64bit_capable,
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&is64bit_capable_len, NULL, 0) == 0;
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// if the host is an armv8 device, its cpusubtype will be in
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// CPU_SUBTYPE_ARM64 numbering
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|
// and we need to rewrite it to a reasonable CPU_SUBTYPE_ARM value
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// instead.
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if (host_cpu_is_64bit) {
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sub = CPU_SUBTYPE_ARM_V7;
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}
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} break;
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default:
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break;
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}
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|
process_info.GetArchitecture().SetArchitecture(eArchTypeMachO, cpu, sub);
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return true;
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}
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|
}
|
|
process_info.GetArchitecture().Clear();
|
|
return false;
|
|
}
|
|
|
|
static bool GetMacOSXProcessArgs(const ProcessInstanceInfoMatch *match_info_ptr,
|
|
ProcessInstanceInfo &process_info) {
|
|
if (process_info.ProcessIDIsValid()) {
|
|
int proc_args_mib[3] = {CTL_KERN, KERN_PROCARGS2,
|
|
(int)process_info.GetProcessID()};
|
|
|
|
size_t arg_data_size = 0;
|
|
if (::sysctl(proc_args_mib, 3, nullptr, &arg_data_size, NULL, 0) ||
|
|
arg_data_size == 0)
|
|
arg_data_size = 8192;
|
|
|
|
// Add a few bytes to the calculated length, I know we need to add at least
|
|
// one byte
|
|
// to this number otherwise we get junk back, so add 128 just in case...
|
|
DataBufferHeap arg_data(arg_data_size + 128, 0);
|
|
arg_data_size = arg_data.GetByteSize();
|
|
if (::sysctl(proc_args_mib, 3, arg_data.GetBytes(), &arg_data_size, NULL,
|
|
0) == 0) {
|
|
DataExtractor data(arg_data.GetBytes(), arg_data_size,
|
|
endian::InlHostByteOrder(), sizeof(void *));
|
|
lldb::offset_t offset = 0;
|
|
uint32_t argc = data.GetU32(&offset);
|
|
llvm::Triple &triple = process_info.GetArchitecture().GetTriple();
|
|
const llvm::Triple::ArchType triple_arch = triple.getArch();
|
|
const bool check_for_ios_simulator =
|
|
(triple_arch == llvm::Triple::x86 ||
|
|
triple_arch == llvm::Triple::x86_64);
|
|
const char *cstr = data.GetCStr(&offset);
|
|
if (cstr) {
|
|
process_info.GetExecutableFile().SetFile(cstr, FileSpec::Style::native);
|
|
|
|
if (match_info_ptr == NULL ||
|
|
NameMatches(
|
|
process_info.GetExecutableFile().GetFilename().GetCString(),
|
|
match_info_ptr->GetNameMatchType(),
|
|
match_info_ptr->GetProcessInfo().GetName())) {
|
|
// Skip NULLs
|
|
while (true) {
|
|
const uint8_t *p = data.PeekData(offset, 1);
|
|
if ((p == NULL) || (*p != '\0'))
|
|
break;
|
|
++offset;
|
|
}
|
|
// Now extract all arguments
|
|
Args &proc_args = process_info.GetArguments();
|
|
for (int i = 0; i < static_cast<int>(argc); ++i) {
|
|
cstr = data.GetCStr(&offset);
|
|
if (cstr)
|
|
proc_args.AppendArgument(llvm::StringRef(cstr));
|
|
}
|
|
|
|
Environment &proc_env = process_info.GetEnvironment();
|
|
while ((cstr = data.GetCStr(&offset))) {
|
|
if (cstr[0] == '\0')
|
|
break;
|
|
|
|
if (check_for_ios_simulator) {
|
|
if (strncmp(cstr, "SIMULATOR_UDID=", strlen("SIMULATOR_UDID=")) ==
|
|
0)
|
|
process_info.GetArchitecture().GetTriple().setOS(
|
|
llvm::Triple::IOS);
|
|
else
|
|
process_info.GetArchitecture().GetTriple().setOS(
|
|
llvm::Triple::MacOSX);
|
|
}
|
|
|
|
proc_env.insert(cstr);
|
|
}
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static bool GetMacOSXProcessUserAndGroup(ProcessInstanceInfo &process_info) {
|
|
if (process_info.ProcessIDIsValid()) {
|
|
int mib[4];
|
|
mib[0] = CTL_KERN;
|
|
mib[1] = KERN_PROC;
|
|
mib[2] = KERN_PROC_PID;
|
|
mib[3] = process_info.GetProcessID();
|
|
struct kinfo_proc proc_kinfo;
|
|
size_t 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.kp_eproc.e_ppid);
|
|
process_info.SetUserID(proc_kinfo.kp_eproc.e_pcred.p_ruid);
|
|
process_info.SetGroupID(proc_kinfo.kp_eproc.e_pcred.p_rgid);
|
|
process_info.SetEffectiveUserID(proc_kinfo.kp_eproc.e_ucred.cr_uid);
|
|
if (proc_kinfo.kp_eproc.e_ucred.cr_ngroups > 0)
|
|
process_info.SetEffectiveGroupID(
|
|
proc_kinfo.kp_eproc.e_ucred.cr_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;
|
|
}
|
|
|
|
uint32_t Host::FindProcessesImpl(const ProcessInstanceInfoMatch &match_info,
|
|
ProcessInstanceInfoList &process_infos) {
|
|
std::vector<struct kinfo_proc> kinfos;
|
|
|
|
int mib[3] = {CTL_KERN, KERN_PROC, KERN_PROC_ALL};
|
|
|
|
size_t pid_data_size = 0;
|
|
if (::sysctl(mib, 3, nullptr, &pid_data_size, nullptr, 0) != 0)
|
|
return 0;
|
|
|
|
// Add a few extra in case a few more show up
|
|
const size_t estimated_pid_count =
|
|
(pid_data_size / sizeof(struct kinfo_proc)) + 10;
|
|
|
|
kinfos.resize(estimated_pid_count);
|
|
pid_data_size = kinfos.size() * sizeof(struct kinfo_proc);
|
|
|
|
if (::sysctl(mib, 3, &kinfos[0], &pid_data_size, nullptr, 0) != 0)
|
|
return 0;
|
|
|
|
const size_t actual_pid_count = (pid_data_size / sizeof(struct kinfo_proc));
|
|
|
|
bool all_users = match_info.GetMatchAllUsers();
|
|
const lldb::pid_t our_pid = getpid();
|
|
const uid_t our_uid = getuid();
|
|
for (size_t i = 0; i < actual_pid_count; i++) {
|
|
const struct kinfo_proc &kinfo = kinfos[i];
|
|
|
|
bool kinfo_user_matches = false;
|
|
if (all_users)
|
|
kinfo_user_matches = true;
|
|
else
|
|
kinfo_user_matches = kinfo.kp_eproc.e_pcred.p_ruid == our_uid;
|
|
|
|
// Special case, if lldb is being run as root we can attach to anything.
|
|
if (our_uid == 0)
|
|
kinfo_user_matches = true;
|
|
|
|
if (!kinfo_user_matches || // Make sure the user is acceptable
|
|
static_cast<lldb::pid_t>(kinfo.kp_proc.p_pid) ==
|
|
our_pid || // Skip this process
|
|
kinfo.kp_proc.p_pid == 0 || // Skip kernel (kernel pid is zero)
|
|
kinfo.kp_proc.p_stat == SZOMB || // Zombies are bad, they like brains...
|
|
kinfo.kp_proc.p_flag & P_TRACED || // Being debugged?
|
|
kinfo.kp_proc.p_flag & P_WEXIT)
|
|
continue;
|
|
|
|
ProcessInstanceInfo process_info;
|
|
process_info.SetProcessID(kinfo.kp_proc.p_pid);
|
|
process_info.SetParentProcessID(kinfo.kp_eproc.e_ppid);
|
|
process_info.SetUserID(kinfo.kp_eproc.e_pcred.p_ruid);
|
|
process_info.SetGroupID(kinfo.kp_eproc.e_pcred.p_rgid);
|
|
process_info.SetEffectiveUserID(kinfo.kp_eproc.e_ucred.cr_uid);
|
|
if (kinfo.kp_eproc.e_ucred.cr_ngroups > 0)
|
|
process_info.SetEffectiveGroupID(kinfo.kp_eproc.e_ucred.cr_groups[0]);
|
|
else
|
|
process_info.SetEffectiveGroupID(UINT32_MAX);
|
|
|
|
// Make sure our info matches before we go fetch the name and cpu type
|
|
if (!match_info.UserIDsMatch(process_info) ||
|
|
!match_info.ProcessIDsMatch(process_info))
|
|
continue;
|
|
|
|
// Get CPU type first so we can know to look for iOS simulator is we have
|
|
// x86 or x86_64
|
|
if (GetMacOSXProcessCPUType(process_info)) {
|
|
if (GetMacOSXProcessArgs(&match_info, process_info)) {
|
|
if (match_info.Matches(process_info))
|
|
process_infos.push_back(process_info);
|
|
}
|
|
}
|
|
}
|
|
return process_infos.size();
|
|
}
|
|
|
|
bool Host::GetProcessInfo(lldb::pid_t pid, ProcessInstanceInfo &process_info) {
|
|
process_info.SetProcessID(pid);
|
|
bool success = false;
|
|
|
|
// Get CPU type first so we can know to look for iOS simulator is we have x86
|
|
// or x86_64
|
|
if (GetMacOSXProcessCPUType(process_info))
|
|
success = true;
|
|
|
|
if (GetMacOSXProcessArgs(NULL, process_info))
|
|
success = true;
|
|
|
|
if (GetMacOSXProcessUserAndGroup(process_info))
|
|
success = true;
|
|
|
|
if (success)
|
|
return true;
|
|
|
|
process_info.Clear();
|
|
return false;
|
|
}
|
|
|
|
#if TARGET_OS_OSX
|
|
static void PackageXPCArguments(xpc_object_t message, const char *prefix,
|
|
const Args &args) {
|
|
size_t count = args.GetArgumentCount();
|
|
char buf[50]; // long enough for 'argXXX'
|
|
memset(buf, 0, 50);
|
|
sprintf(buf, "%sCount", prefix);
|
|
xpc_dictionary_set_int64(message, buf, count);
|
|
for (size_t i = 0; i < count; i++) {
|
|
memset(buf, 0, 50);
|
|
sprintf(buf, "%s%zi", prefix, i);
|
|
xpc_dictionary_set_string(message, buf, args.GetArgumentAtIndex(i));
|
|
}
|
|
}
|
|
|
|
static void PackageXPCEnvironment(xpc_object_t message, llvm::StringRef prefix,
|
|
const Environment &env) {
|
|
xpc_dictionary_set_int64(message, (prefix + "Count").str().c_str(),
|
|
env.size());
|
|
size_t i = 0;
|
|
for (const auto &KV : env) {
|
|
xpc_dictionary_set_string(message, (prefix + llvm::Twine(i)).str().c_str(),
|
|
Environment::compose(KV).c_str());
|
|
}
|
|
}
|
|
|
|
/*
|
|
A valid authorizationRef means that
|
|
- there is the LaunchUsingXPCRightName rights in the /etc/authorization
|
|
- we have successfully copied the rights to be send over the XPC wire
|
|
Once obtained, it will be valid for as long as the process lives.
|
|
*/
|
|
static AuthorizationRef authorizationRef = NULL;
|
|
static Status getXPCAuthorization(ProcessLaunchInfo &launch_info) {
|
|
Status error;
|
|
Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_HOST |
|
|
LIBLLDB_LOG_PROCESS));
|
|
|
|
if ((launch_info.GetUserID() == 0) && !authorizationRef) {
|
|
OSStatus createStatus =
|
|
AuthorizationCreate(NULL, kAuthorizationEmptyEnvironment,
|
|
kAuthorizationFlagDefaults, &authorizationRef);
|
|
if (createStatus != errAuthorizationSuccess) {
|
|
error.SetError(1, eErrorTypeGeneric);
|
|
error.SetErrorString("Can't create authorizationRef.");
|
|
LLDB_LOG(log, "error: {0}", error);
|
|
return error;
|
|
}
|
|
|
|
OSStatus rightsStatus =
|
|
AuthorizationRightGet(LaunchUsingXPCRightName, NULL);
|
|
if (rightsStatus != errAuthorizationSuccess) {
|
|
// No rights in the security database, Create it with the right prompt.
|
|
CFStringRef prompt =
|
|
CFSTR("Xcode is trying to take control of a root process.");
|
|
CFStringRef keys[] = {CFSTR("en")};
|
|
CFTypeRef values[] = {prompt};
|
|
CFDictionaryRef promptDict = CFDictionaryCreate(
|
|
kCFAllocatorDefault, (const void **)keys, (const void **)values, 1,
|
|
&kCFCopyStringDictionaryKeyCallBacks,
|
|
&kCFTypeDictionaryValueCallBacks);
|
|
|
|
CFStringRef keys1[] = {CFSTR("class"), CFSTR("group"), CFSTR("comment"),
|
|
CFSTR("default-prompt"), CFSTR("shared")};
|
|
CFTypeRef values1[] = {CFSTR("user"), CFSTR("admin"),
|
|
CFSTR(LaunchUsingXPCRightName), promptDict,
|
|
kCFBooleanFalse};
|
|
CFDictionaryRef dict = CFDictionaryCreate(
|
|
kCFAllocatorDefault, (const void **)keys1, (const void **)values1, 5,
|
|
&kCFCopyStringDictionaryKeyCallBacks,
|
|
&kCFTypeDictionaryValueCallBacks);
|
|
rightsStatus = AuthorizationRightSet(
|
|
authorizationRef, LaunchUsingXPCRightName, dict, NULL, NULL, NULL);
|
|
CFRelease(promptDict);
|
|
CFRelease(dict);
|
|
}
|
|
|
|
OSStatus copyRightStatus = errAuthorizationDenied;
|
|
if (rightsStatus == errAuthorizationSuccess) {
|
|
AuthorizationItem item1 = {LaunchUsingXPCRightName, 0, NULL, 0};
|
|
AuthorizationItem items[] = {item1};
|
|
AuthorizationRights requestedRights = {1, items};
|
|
AuthorizationFlags authorizationFlags =
|
|
kAuthorizationFlagInteractionAllowed | kAuthorizationFlagExtendRights;
|
|
copyRightStatus = AuthorizationCopyRights(
|
|
authorizationRef, &requestedRights, kAuthorizationEmptyEnvironment,
|
|
authorizationFlags, NULL);
|
|
}
|
|
|
|
if (copyRightStatus != errAuthorizationSuccess) {
|
|
// Eventually when the commandline supports running as root and the user
|
|
// is not
|
|
// logged in in the current audit session, we will need the trick in gdb
|
|
// where
|
|
// we ask the user to type in the root passwd in the terminal.
|
|
error.SetError(2, eErrorTypeGeneric);
|
|
error.SetErrorStringWithFormat(
|
|
"Launching as root needs root authorization.");
|
|
LLDB_LOG(log, "error: {0}", error);
|
|
|
|
if (authorizationRef) {
|
|
AuthorizationFree(authorizationRef, kAuthorizationFlagDefaults);
|
|
authorizationRef = NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
return error;
|
|
}
|
|
#endif
|
|
|
|
static short GetPosixspawnFlags(const ProcessLaunchInfo &launch_info) {
|
|
short flags = POSIX_SPAWN_SETSIGDEF | POSIX_SPAWN_SETSIGMASK;
|
|
|
|
if (launch_info.GetFlags().Test(eLaunchFlagExec))
|
|
flags |= POSIX_SPAWN_SETEXEC; // Darwin specific posix_spawn flag
|
|
|
|
if (launch_info.GetFlags().Test(eLaunchFlagDebug))
|
|
flags |= POSIX_SPAWN_START_SUSPENDED; // Darwin specific posix_spawn flag
|
|
|
|
if (launch_info.GetFlags().Test(eLaunchFlagDisableASLR))
|
|
flags |= _POSIX_SPAWN_DISABLE_ASLR; // Darwin specific posix_spawn flag
|
|
|
|
if (launch_info.GetLaunchInSeparateProcessGroup())
|
|
flags |= POSIX_SPAWN_SETPGROUP;
|
|
|
|
#ifdef POSIX_SPAWN_CLOEXEC_DEFAULT
|
|
#if defined(__x86_64__) || defined(__i386__)
|
|
static LazyBool g_use_close_on_exec_flag = eLazyBoolCalculate;
|
|
if (g_use_close_on_exec_flag == eLazyBoolCalculate) {
|
|
g_use_close_on_exec_flag = eLazyBoolNo;
|
|
|
|
llvm::VersionTuple version = HostInfo::GetOSVersion();
|
|
if (version > llvm::VersionTuple(10, 7)) {
|
|
// Kernel panic if we use the POSIX_SPAWN_CLOEXEC_DEFAULT on 10.7 or
|
|
// earlier
|
|
g_use_close_on_exec_flag = eLazyBoolYes;
|
|
}
|
|
}
|
|
#else
|
|
static LazyBool g_use_close_on_exec_flag = eLazyBoolYes;
|
|
#endif // defined(__x86_64__) || defined(__i386__)
|
|
// Close all files exception those with file actions if this is supported.
|
|
if (g_use_close_on_exec_flag == eLazyBoolYes)
|
|
flags |= POSIX_SPAWN_CLOEXEC_DEFAULT;
|
|
#endif // ifdef POSIX_SPAWN_CLOEXEC_DEFAULT
|
|
return flags;
|
|
}
|
|
|
|
static Status LaunchProcessXPC(const char *exe_path,
|
|
ProcessLaunchInfo &launch_info,
|
|
lldb::pid_t &pid) {
|
|
#if TARGET_OS_OSX
|
|
Status error = getXPCAuthorization(launch_info);
|
|
if (error.Fail())
|
|
return error;
|
|
|
|
Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_HOST |
|
|
LIBLLDB_LOG_PROCESS));
|
|
|
|
uid_t requested_uid = launch_info.GetUserID();
|
|
const char *xpc_service = nil;
|
|
bool send_auth = false;
|
|
AuthorizationExternalForm extForm;
|
|
if (requested_uid == 0) {
|
|
if (AuthorizationMakeExternalForm(authorizationRef, &extForm) ==
|
|
errAuthorizationSuccess) {
|
|
send_auth = true;
|
|
} else {
|
|
error.SetError(3, eErrorTypeGeneric);
|
|
error.SetErrorStringWithFormat("Launching root via XPC needs to "
|
|
"externalize authorization reference.");
|
|
LLDB_LOG(log, "error: {0}", error);
|
|
return error;
|
|
}
|
|
xpc_service = LaunchUsingXPCRightName;
|
|
} else {
|
|
error.SetError(4, eErrorTypeGeneric);
|
|
error.SetErrorStringWithFormat(
|
|
"Launching via XPC is only currently available for root.");
|
|
LLDB_LOG(log, "error: {0}", error);
|
|
return error;
|
|
}
|
|
|
|
xpc_connection_t conn = xpc_connection_create(xpc_service, NULL);
|
|
|
|
xpc_connection_set_event_handler(conn, ^(xpc_object_t event) {
|
|
xpc_type_t type = xpc_get_type(event);
|
|
|
|
if (type == XPC_TYPE_ERROR) {
|
|
if (event == XPC_ERROR_CONNECTION_INTERRUPTED) {
|
|
// The service has either canceled itself, crashed, or been terminated.
|
|
// The XPC connection is still valid and sending a message to it will
|
|
// re-launch the service.
|
|
// If the service is state-full, this is the time to initialize the new
|
|
// service.
|
|
return;
|
|
} else if (event == XPC_ERROR_CONNECTION_INVALID) {
|
|
// The service is invalid. Either the service name supplied to
|
|
// xpc_connection_create() is incorrect
|
|
// or we (this process) have canceled the service; we can do any cleanup
|
|
// of application state at this point.
|
|
// printf("Service disconnected");
|
|
return;
|
|
} else {
|
|
// printf("Unexpected error from service: %s",
|
|
// xpc_dictionary_get_string(event, XPC_ERROR_KEY_DESCRIPTION));
|
|
}
|
|
|
|
} else {
|
|
// printf("Received unexpected event in handler");
|
|
}
|
|
});
|
|
|
|
xpc_connection_set_finalizer_f(conn, xpc_finalizer_t(xpc_release));
|
|
xpc_connection_resume(conn);
|
|
xpc_object_t message = xpc_dictionary_create(nil, nil, 0);
|
|
|
|
if (send_auth) {
|
|
xpc_dictionary_set_data(message, LauncherXPCServiceAuthKey, extForm.bytes,
|
|
sizeof(AuthorizationExternalForm));
|
|
}
|
|
|
|
PackageXPCArguments(message, LauncherXPCServiceArgPrefxKey,
|
|
launch_info.GetArguments());
|
|
PackageXPCEnvironment(message, LauncherXPCServiceEnvPrefxKey,
|
|
launch_info.GetEnvironment());
|
|
|
|
// Posix spawn stuff.
|
|
xpc_dictionary_set_int64(message, LauncherXPCServiceCPUTypeKey,
|
|
launch_info.GetArchitecture().GetMachOCPUType());
|
|
xpc_dictionary_set_int64(message, LauncherXPCServicePosixspawnFlagsKey,
|
|
GetPosixspawnFlags(launch_info));
|
|
const FileAction *file_action = launch_info.GetFileActionForFD(STDIN_FILENO);
|
|
if (file_action && !file_action->GetPath().empty()) {
|
|
xpc_dictionary_set_string(message, LauncherXPCServiceStdInPathKeyKey,
|
|
file_action->GetPath().str().c_str());
|
|
}
|
|
file_action = launch_info.GetFileActionForFD(STDOUT_FILENO);
|
|
if (file_action && !file_action->GetPath().empty()) {
|
|
xpc_dictionary_set_string(message, LauncherXPCServiceStdOutPathKeyKey,
|
|
file_action->GetPath().str().c_str());
|
|
}
|
|
file_action = launch_info.GetFileActionForFD(STDERR_FILENO);
|
|
if (file_action && !file_action->GetPath().empty()) {
|
|
xpc_dictionary_set_string(message, LauncherXPCServiceStdErrPathKeyKey,
|
|
file_action->GetPath().str().c_str());
|
|
}
|
|
|
|
xpc_object_t reply =
|
|
xpc_connection_send_message_with_reply_sync(conn, message);
|
|
xpc_type_t returnType = xpc_get_type(reply);
|
|
if (returnType == XPC_TYPE_DICTIONARY) {
|
|
pid = xpc_dictionary_get_int64(reply, LauncherXPCServiceChildPIDKey);
|
|
if (pid == 0) {
|
|
int errorType =
|
|
xpc_dictionary_get_int64(reply, LauncherXPCServiceErrorTypeKey);
|
|
int errorCode =
|
|
xpc_dictionary_get_int64(reply, LauncherXPCServiceCodeTypeKey);
|
|
|
|
error.SetError(errorCode, eErrorTypeGeneric);
|
|
error.SetErrorStringWithFormat(
|
|
"Problems with launching via XPC. Error type : %i, code : %i",
|
|
errorType, errorCode);
|
|
LLDB_LOG(log, "error: {0}", error);
|
|
|
|
if (authorizationRef) {
|
|
AuthorizationFree(authorizationRef, kAuthorizationFlagDefaults);
|
|
authorizationRef = NULL;
|
|
}
|
|
}
|
|
} else if (returnType == XPC_TYPE_ERROR) {
|
|
error.SetError(5, eErrorTypeGeneric);
|
|
error.SetErrorStringWithFormat(
|
|
"Problems with launching via XPC. XPC error : %s",
|
|
xpc_dictionary_get_string(reply, XPC_ERROR_KEY_DESCRIPTION));
|
|
LLDB_LOG(log, "error: {0}", error);
|
|
}
|
|
|
|
return error;
|
|
#else
|
|
Status error;
|
|
return error;
|
|
#endif
|
|
}
|
|
|
|
static bool AddPosixSpawnFileAction(void *_file_actions, const FileAction *info,
|
|
Log *log, Status &error) {
|
|
if (info == NULL)
|
|
return false;
|
|
|
|
posix_spawn_file_actions_t *file_actions =
|
|
static_cast<posix_spawn_file_actions_t *>(_file_actions);
|
|
|
|
switch (info->GetAction()) {
|
|
case FileAction::eFileActionNone:
|
|
error.Clear();
|
|
break;
|
|
|
|
case FileAction::eFileActionClose:
|
|
if (info->GetFD() == -1)
|
|
error.SetErrorString(
|
|
"invalid fd for posix_spawn_file_actions_addclose(...)");
|
|
else {
|
|
error.SetError(
|
|
::posix_spawn_file_actions_addclose(file_actions, info->GetFD()),
|
|
eErrorTypePOSIX);
|
|
if (error.Fail())
|
|
LLDB_LOG(log,
|
|
"error: {0}, posix_spawn_file_actions_addclose "
|
|
"(action={1}, fd={2})",
|
|
error, file_actions, info->GetFD());
|
|
}
|
|
break;
|
|
|
|
case FileAction::eFileActionDuplicate:
|
|
if (info->GetFD() == -1)
|
|
error.SetErrorString(
|
|
"invalid fd for posix_spawn_file_actions_adddup2(...)");
|
|
else if (info->GetActionArgument() == -1)
|
|
error.SetErrorString(
|
|
"invalid duplicate fd for posix_spawn_file_actions_adddup2(...)");
|
|
else {
|
|
error.SetError(
|
|
::posix_spawn_file_actions_adddup2(file_actions, info->GetFD(),
|
|
info->GetActionArgument()),
|
|
eErrorTypePOSIX);
|
|
if (error.Fail())
|
|
LLDB_LOG(log,
|
|
"error: {0}, posix_spawn_file_actions_adddup2 "
|
|
"(action={1}, fd={2}, dup_fd={3})",
|
|
error, file_actions, info->GetFD(), info->GetActionArgument());
|
|
}
|
|
break;
|
|
|
|
case FileAction::eFileActionOpen:
|
|
if (info->GetFD() == -1)
|
|
error.SetErrorString(
|
|
"invalid fd in posix_spawn_file_actions_addopen(...)");
|
|
else {
|
|
int oflag = info->GetActionArgument();
|
|
|
|
mode_t mode = 0;
|
|
|
|
if (oflag & O_CREAT)
|
|
mode = 0640;
|
|
|
|
error.SetError(::posix_spawn_file_actions_addopen(
|
|
file_actions, info->GetFD(),
|
|
info->GetPath().str().c_str(), oflag, mode),
|
|
eErrorTypePOSIX);
|
|
if (error.Fail())
|
|
LLDB_LOG(log,
|
|
"error: {0}, posix_spawn_file_actions_addopen (action={1}, "
|
|
"fd={2}, path='{3}', oflag={4}, mode={5})",
|
|
error, file_actions, info->GetFD(), info->GetPath(), oflag,
|
|
mode);
|
|
}
|
|
break;
|
|
}
|
|
return error.Success();
|
|
}
|
|
|
|
static Status LaunchProcessPosixSpawn(const char *exe_path,
|
|
const ProcessLaunchInfo &launch_info,
|
|
lldb::pid_t &pid) {
|
|
Status error;
|
|
Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_HOST |
|
|
LIBLLDB_LOG_PROCESS));
|
|
|
|
posix_spawnattr_t attr;
|
|
error.SetError(::posix_spawnattr_init(&attr), eErrorTypePOSIX);
|
|
|
|
if (error.Fail()) {
|
|
LLDB_LOG(log, "error: {0}, ::posix_spawnattr_init ( &attr )", error);
|
|
return error;
|
|
}
|
|
|
|
// Make sure we clean up the posix spawn attributes before exiting this scope.
|
|
auto cleanup_attr =
|
|
llvm::make_scope_exit([&]() { posix_spawnattr_destroy(&attr); });
|
|
|
|
sigset_t no_signals;
|
|
sigset_t all_signals;
|
|
sigemptyset(&no_signals);
|
|
sigfillset(&all_signals);
|
|
::posix_spawnattr_setsigmask(&attr, &no_signals);
|
|
::posix_spawnattr_setsigdefault(&attr, &all_signals);
|
|
|
|
short flags = GetPosixspawnFlags(launch_info);
|
|
|
|
error.SetError(::posix_spawnattr_setflags(&attr, flags), eErrorTypePOSIX);
|
|
if (error.Fail()) {
|
|
LLDB_LOG(log,
|
|
"error: {0}, ::posix_spawnattr_setflags ( &attr, flags={1:x} )",
|
|
error, flags);
|
|
return error;
|
|
}
|
|
|
|
bool is_graphical = true;
|
|
|
|
#if TARGET_OS_OSX
|
|
SecuritySessionId session_id;
|
|
SessionAttributeBits session_attributes;
|
|
OSStatus status =
|
|
SessionGetInfo(callerSecuritySession, &session_id, &session_attributes);
|
|
if (status == errSessionSuccess)
|
|
is_graphical = session_attributes & sessionHasGraphicAccess;
|
|
#endif
|
|
|
|
// When lldb is ran through a graphical session, make the debuggee process
|
|
// responsible for its own TCC permissions instead of inheriting them from
|
|
// its parent.
|
|
if (is_graphical && launch_info.GetFlags().Test(eLaunchFlagDebug) &&
|
|
!launch_info.GetFlags().Test(eLaunchFlagInheritTCCFromParent)) {
|
|
error.SetError(setup_posix_spawn_responsible_flag(&attr), eErrorTypePOSIX);
|
|
if (error.Fail()) {
|
|
LLDB_LOG(log, "error: {0}, setup_posix_spawn_responsible_flag(&attr)",
|
|
error);
|
|
return error;
|
|
}
|
|
}
|
|
|
|
const char *tmp_argv[2];
|
|
char *const *argv = const_cast<char *const *>(
|
|
launch_info.GetArguments().GetConstArgumentVector());
|
|
Environment::Envp envp = launch_info.GetEnvironment().getEnvp();
|
|
if (argv == NULL) {
|
|
// posix_spawn gets very unhappy if it doesn't have at least the program
|
|
// name in argv[0]. One of the side affects I have noticed is the
|
|
// environment
|
|
// variables don't make it into the child process if "argv == NULL"!!!
|
|
tmp_argv[0] = exe_path;
|
|
tmp_argv[1] = NULL;
|
|
argv = const_cast<char *const *>(tmp_argv);
|
|
}
|
|
|
|
FileSpec working_dir{launch_info.GetWorkingDirectory()};
|
|
if (working_dir) {
|
|
// Set the working directory on this thread only
|
|
if (__pthread_chdir(working_dir.GetCString()) < 0) {
|
|
if (errno == ENOENT) {
|
|
error.SetErrorStringWithFormat("No such file or directory: %s",
|
|
working_dir.GetCString());
|
|
} else if (errno == ENOTDIR) {
|
|
error.SetErrorStringWithFormat("Path doesn't name a directory: %s",
|
|
working_dir.GetCString());
|
|
} else {
|
|
error.SetErrorStringWithFormat("An unknown error occurred when "
|
|
"changing directory for process "
|
|
"execution.");
|
|
}
|
|
return error;
|
|
}
|
|
}
|
|
|
|
::pid_t result_pid = LLDB_INVALID_PROCESS_ID;
|
|
const size_t num_file_actions = launch_info.GetNumFileActions();
|
|
if (num_file_actions > 0) {
|
|
posix_spawn_file_actions_t file_actions;
|
|
error.SetError(::posix_spawn_file_actions_init(&file_actions),
|
|
eErrorTypePOSIX);
|
|
if (error.Fail()) {
|
|
LLDB_LOG(log,
|
|
"error: {0}, ::posix_spawn_file_actions_init ( &file_actions )",
|
|
error);
|
|
return error;
|
|
}
|
|
|
|
// Make sure we clean up the posix file actions before exiting this scope.
|
|
auto cleanup_fileact = llvm::make_scope_exit(
|
|
[&]() { posix_spawn_file_actions_destroy(&file_actions); });
|
|
|
|
for (size_t i = 0; i < num_file_actions; ++i) {
|
|
const FileAction *launch_file_action =
|
|
launch_info.GetFileActionAtIndex(i);
|
|
if (launch_file_action) {
|
|
if (!AddPosixSpawnFileAction(&file_actions, launch_file_action, log,
|
|
error))
|
|
return error;
|
|
}
|
|
}
|
|
|
|
error.SetError(
|
|
::posix_spawnp(&result_pid, exe_path, &file_actions, &attr, argv, envp),
|
|
eErrorTypePOSIX);
|
|
|
|
if (error.Fail()) {
|
|
LLDB_LOG(log,
|
|
"error: {0}, ::posix_spawnp(pid => {1}, path = '{2}', "
|
|
"file_actions = {3}, "
|
|
"attr = {4}, argv = {5}, envp = {6} )",
|
|
error, result_pid, exe_path, &file_actions, &attr, argv,
|
|
envp.get());
|
|
if (log) {
|
|
for (int ii = 0; argv[ii]; ++ii)
|
|
LLDB_LOG(log, "argv[{0}] = '{1}'", ii, argv[ii]);
|
|
}
|
|
}
|
|
|
|
} else {
|
|
error.SetError(
|
|
::posix_spawnp(&result_pid, exe_path, NULL, &attr, argv, envp),
|
|
eErrorTypePOSIX);
|
|
|
|
if (error.Fail()) {
|
|
LLDB_LOG(log,
|
|
"error: {0}, ::posix_spawnp ( pid => {1}, path = '{2}', "
|
|
"file_actions = NULL, attr = {3}, argv = {4}, envp = {5} )",
|
|
error, result_pid, exe_path, &attr, argv, envp.get());
|
|
if (log) {
|
|
for (int ii = 0; argv[ii]; ++ii)
|
|
LLDB_LOG(log, "argv[{0}] = '{1}'", ii, argv[ii]);
|
|
}
|
|
}
|
|
}
|
|
pid = result_pid;
|
|
|
|
if (working_dir) {
|
|
// No more thread specific current working directory
|
|
__pthread_fchdir(-1);
|
|
}
|
|
|
|
return error;
|
|
}
|
|
|
|
static bool ShouldLaunchUsingXPC(ProcessLaunchInfo &launch_info) {
|
|
bool result = false;
|
|
|
|
#if TARGET_OS_OSX
|
|
bool launchingAsRoot = launch_info.GetUserID() == 0;
|
|
bool currentUserIsRoot = HostInfo::GetEffectiveUserID() == 0;
|
|
|
|
if (launchingAsRoot && !currentUserIsRoot) {
|
|
// If current user is already root, we don't need XPC's help.
|
|
result = true;
|
|
}
|
|
#endif
|
|
|
|
return result;
|
|
}
|
|
|
|
Status Host::LaunchProcess(ProcessLaunchInfo &launch_info) {
|
|
Status error;
|
|
|
|
FileSystem &fs = FileSystem::Instance();
|
|
FileSpec exe_spec(launch_info.GetExecutableFile());
|
|
|
|
if (!fs.Exists(exe_spec))
|
|
FileSystem::Instance().Resolve(exe_spec);
|
|
|
|
if (!fs.Exists(exe_spec))
|
|
FileSystem::Instance().ResolveExecutableLocation(exe_spec);
|
|
|
|
if (!fs.Exists(exe_spec)) {
|
|
error.SetErrorStringWithFormatv("executable doesn't exist: '{0}'",
|
|
exe_spec);
|
|
return error;
|
|
}
|
|
|
|
if (launch_info.GetFlags().Test(eLaunchFlagLaunchInTTY)) {
|
|
#if TARGET_OS_OSX
|
|
return LaunchInNewTerminalWithAppleScript(exe_spec.GetPath().c_str(),
|
|
launch_info);
|
|
#else
|
|
error.SetErrorString("launching a process in a new terminal is not "
|
|
"supported on iOS devices");
|
|
return error;
|
|
#endif
|
|
}
|
|
|
|
lldb::pid_t pid = LLDB_INVALID_PROCESS_ID;
|
|
|
|
// From now on we'll deal with the external (devirtualized) path.
|
|
auto exe_path = fs.GetExternalPath(exe_spec);
|
|
if (!exe_path)
|
|
return Status(exe_path.getError());
|
|
|
|
if (ShouldLaunchUsingXPC(launch_info))
|
|
error = LaunchProcessXPC(exe_path->c_str(), launch_info, pid);
|
|
else
|
|
error = LaunchProcessPosixSpawn(exe_path->c_str(), launch_info, pid);
|
|
|
|
if (pid != LLDB_INVALID_PROCESS_ID) {
|
|
// If all went well, then set the process ID into the launch info
|
|
launch_info.SetProcessID(pid);
|
|
|
|
// Make sure we reap any processes we spawn or we will have zombies.
|
|
bool monitoring = launch_info.MonitorProcess();
|
|
UNUSED_IF_ASSERT_DISABLED(monitoring);
|
|
assert(monitoring);
|
|
} else {
|
|
// Invalid process ID, something didn't go well
|
|
if (error.Success())
|
|
error.SetErrorString("process launch failed for unknown reasons");
|
|
}
|
|
return error;
|
|
}
|
|
|
|
Status Host::ShellExpandArguments(ProcessLaunchInfo &launch_info) {
|
|
Status error;
|
|
if (launch_info.GetFlags().Test(eLaunchFlagShellExpandArguments)) {
|
|
FileSpec expand_tool_spec = HostInfo::GetSupportExeDir();
|
|
if (!expand_tool_spec) {
|
|
error.SetErrorString(
|
|
"could not get support executable directory for lldb-argdumper tool");
|
|
return error;
|
|
}
|
|
expand_tool_spec.AppendPathComponent("lldb-argdumper");
|
|
if (!FileSystem::Instance().Exists(expand_tool_spec)) {
|
|
error.SetErrorStringWithFormat(
|
|
"could not find the lldb-argdumper tool: %s",
|
|
expand_tool_spec.GetPath().c_str());
|
|
return error;
|
|
}
|
|
|
|
StreamString expand_tool_spec_stream;
|
|
expand_tool_spec_stream.Printf("\"%s\"",
|
|
expand_tool_spec.GetPath().c_str());
|
|
|
|
Args expand_command(expand_tool_spec_stream.GetData());
|
|
expand_command.AppendArguments(launch_info.GetArguments());
|
|
|
|
int status;
|
|
std::string output;
|
|
FileSpec cwd(launch_info.GetWorkingDirectory());
|
|
if (!FileSystem::Instance().Exists(cwd)) {
|
|
char *wd = getcwd(nullptr, 0);
|
|
if (wd == nullptr) {
|
|
error.SetErrorStringWithFormat(
|
|
"cwd does not exist; cannot launch with shell argument expansion");
|
|
return error;
|
|
} else {
|
|
FileSpec working_dir(wd);
|
|
free(wd);
|
|
launch_info.SetWorkingDirectory(working_dir);
|
|
}
|
|
}
|
|
bool run_in_shell = true;
|
|
bool hide_stderr = true;
|
|
Status e =
|
|
RunShellCommand(expand_command, cwd, &status, nullptr, &output,
|
|
std::chrono::seconds(10), run_in_shell, hide_stderr);
|
|
|
|
if (e.Fail())
|
|
return e;
|
|
|
|
if (status != 0) {
|
|
error.SetErrorStringWithFormat("lldb-argdumper exited with error %d",
|
|
status);
|
|
return error;
|
|
}
|
|
|
|
auto data_sp = StructuredData::ParseJSON(output);
|
|
if (!data_sp) {
|
|
error.SetErrorString("invalid JSON");
|
|
return error;
|
|
}
|
|
|
|
auto dict_sp = data_sp->GetAsDictionary();
|
|
if (!data_sp) {
|
|
error.SetErrorString("invalid JSON");
|
|
return error;
|
|
}
|
|
|
|
auto args_sp = dict_sp->GetObjectForDotSeparatedPath("arguments");
|
|
if (!args_sp) {
|
|
error.SetErrorString("invalid JSON");
|
|
return error;
|
|
}
|
|
|
|
auto args_array_sp = args_sp->GetAsArray();
|
|
if (!args_array_sp) {
|
|
error.SetErrorString("invalid JSON");
|
|
return error;
|
|
}
|
|
|
|
launch_info.GetArguments().Clear();
|
|
|
|
for (size_t i = 0; i < args_array_sp->GetSize(); i++) {
|
|
auto item_sp = args_array_sp->GetItemAtIndex(i);
|
|
if (!item_sp)
|
|
continue;
|
|
auto str_sp = item_sp->GetAsString();
|
|
if (!str_sp)
|
|
continue;
|
|
|
|
launch_info.GetArguments().AppendArgument(str_sp->GetValue());
|
|
}
|
|
}
|
|
|
|
return error;
|
|
}
|
|
|
|
llvm::Expected<HostThread> Host::StartMonitoringChildProcess(
|
|
const Host::MonitorChildProcessCallback &callback, lldb::pid_t pid,
|
|
bool monitor_signals) {
|
|
unsigned long mask = DISPATCH_PROC_EXIT;
|
|
if (monitor_signals)
|
|
mask |= DISPATCH_PROC_SIGNAL;
|
|
|
|
Log *log(lldb_private::GetLogIfAnyCategoriesSet(LIBLLDB_LOG_HOST |
|
|
LIBLLDB_LOG_PROCESS));
|
|
|
|
dispatch_source_t source = ::dispatch_source_create(
|
|
DISPATCH_SOURCE_TYPE_PROC, pid, mask,
|
|
::dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0));
|
|
|
|
LLDB_LOGF(log,
|
|
"Host::StartMonitoringChildProcess "
|
|
"(callback, pid=%i, monitor_signals=%i) "
|
|
"source = %p\n",
|
|
static_cast<int>(pid), monitor_signals,
|
|
static_cast<void *>(source));
|
|
|
|
if (source) {
|
|
Host::MonitorChildProcessCallback callback_copy = callback;
|
|
::dispatch_source_set_cancel_handler(source, ^{
|
|
dispatch_release(source);
|
|
});
|
|
::dispatch_source_set_event_handler(source, ^{
|
|
|
|
int status = 0;
|
|
int wait_pid = 0;
|
|
bool cancel = false;
|
|
bool exited = false;
|
|
wait_pid = llvm::sys::RetryAfterSignal(-1, ::waitpid, pid, &status, 0);
|
|
if (wait_pid >= 0) {
|
|
int signal = 0;
|
|
int exit_status = 0;
|
|
const char *status_cstr = NULL;
|
|
if (WIFSTOPPED(status)) {
|
|
signal = WSTOPSIG(status);
|
|
status_cstr = "STOPPED";
|
|
} else if (WIFEXITED(status)) {
|
|
exit_status = WEXITSTATUS(status);
|
|
status_cstr = "EXITED";
|
|
exited = true;
|
|
} else if (WIFSIGNALED(status)) {
|
|
signal = WTERMSIG(status);
|
|
status_cstr = "SIGNALED";
|
|
exited = true;
|
|
exit_status = -1;
|
|
} else {
|
|
status_cstr = "???";
|
|
}
|
|
|
|
LLDB_LOGF(log,
|
|
"::waitpid (pid = %llu, &status, 0) => pid = %i, status "
|
|
"= 0x%8.8x (%s), signal = %i, exit_status = %i",
|
|
pid, wait_pid, status, status_cstr, signal, exit_status);
|
|
|
|
if (callback_copy)
|
|
cancel = callback_copy(pid, exited, signal, exit_status);
|
|
|
|
if (exited || cancel) {
|
|
::dispatch_source_cancel(source);
|
|
}
|
|
}
|
|
});
|
|
|
|
::dispatch_resume(source);
|
|
}
|
|
return HostThread();
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
// Log to both stderr and to ASL Logging when running on MacOSX.
|
|
//----------------------------------------------------------------------
|
|
void Host::SystemLog(SystemLogType type, const char *format, va_list args) {
|
|
if (format && format[0]) {
|
|
static aslmsg g_aslmsg = NULL;
|
|
if (g_aslmsg == NULL) {
|
|
g_aslmsg = ::asl_new(ASL_TYPE_MSG);
|
|
char asl_key_sender[PATH_MAX];
|
|
snprintf(asl_key_sender, sizeof(asl_key_sender),
|
|
"com.apple.LLDB.framework");
|
|
::asl_set(g_aslmsg, ASL_KEY_SENDER, asl_key_sender);
|
|
}
|
|
|
|
// Copy the va_list so we can log this message twice
|
|
va_list copy_args;
|
|
va_copy(copy_args, args);
|
|
// Log to stderr
|
|
::vfprintf(stderr, format, copy_args);
|
|
va_end(copy_args);
|
|
|
|
int asl_level;
|
|
switch (type) {
|
|
case eSystemLogError:
|
|
asl_level = ASL_LEVEL_ERR;
|
|
break;
|
|
|
|
case eSystemLogWarning:
|
|
asl_level = ASL_LEVEL_WARNING;
|
|
break;
|
|
}
|
|
|
|
// Log to ASL
|
|
::asl_vlog(NULL, g_aslmsg, asl_level, format, args);
|
|
}
|
|
}
|