/// <summary>
/// Load native modules (i.e. DAC, DBI) from the runtime build id.
/// </summary>
/// <param name="callback">called back for each symbol file loaded</param>
/// <param name="parameter">callback parameter</param>
/// <param name="config">Target configuration: Windows, Linux or OSX</param>
/// <param name="moduleFilePath">module path</param>
/// <param name="specialKeys">if true, returns the DBI/DAC keys, otherwise the identity key</param>
/// <param name="moduleIndexSize">build id size</param>
/// <param name="moduleIndex">pointer to build id</param>
private void LoadNativeSymbolsFromIndex(
IntPtr self,
SymbolFileCallback callback,
IntPtr parameter,
RuntimeConfiguration config,
string moduleFilePath,
bool specialKeys,
int moduleIndexSize,
IntPtr moduleIndex)
{
if (_symbolService.IsSymbolStoreEnabled)
{
try
{
KeyTypeFlags flags = specialKeys ? KeyTypeFlags.DacDbiKeys : KeyTypeFlags.IdentityKey;
byte[] id = new byte[moduleIndexSize];
Marshal.Copy(moduleIndex, id, 0, moduleIndexSize);
IEnumerable <SymbolStoreKey> keys = null;
switch (config)
{
case RuntimeConfiguration.UnixCore:
keys = ELFFileKeyGenerator.GetKeys(flags, moduleFilePath, id, symbolFile: false, symbolFileName: null);
break;
case RuntimeConfiguration.OSXCore:
keys = MachOFileKeyGenerator.GetKeys(flags, moduleFilePath, id, symbolFile: false, symbolFileName: null);
break;
case RuntimeConfiguration.WindowsCore:
case RuntimeConfiguration.WindowsDesktop:
uint timeStamp = BitConverter.ToUInt32(id, 0);
uint fileSize = BitConverter.ToUInt32(id, 4);
SymbolStoreKey key = PEFileKeyGenerator.GetKey(moduleFilePath, timeStamp, fileSize);
keys = new SymbolStoreKey[] { key };
break;
default:
Trace.TraceError("LoadNativeSymbolsFromIndex: unsupported platform {0}", config);
return;
}
foreach (SymbolStoreKey key in keys)
{
string moduleFileName = Path.GetFileName(key.FullPathName);
Trace.TraceInformation("{0} {1}", key.FullPathName, key.Index);
string downloadFilePath = _symbolService.DownloadFile(key);
if (downloadFilePath != null)
{
Trace.TraceInformation("{0}: {1}", moduleFileName, downloadFilePath);
callback(parameter, moduleFileName, downloadFilePath);
}
}
}
catch (Exception ex) when(ex is BadInputFormatException || ex is InvalidVirtualAddressException || ex is TaskCanceledException)
{
Trace.TraceError("{0} - {1}", ex.Message, moduleFilePath);
}
}
}
/// <summary>
/// Creates a key generator for the runtime module pointed to by the address/size.
/// </summary>
/// <param name="memoryService">memory service instance</param>
/// <param name="config">Target configuration: Windows, Linux or OSX</param>
/// <param name="moduleFilePath">module path</param>
/// <param name="address">module base address</param>
/// <param name="size">module size</param>
/// <returns>KeyGenerator or null if error</returns>
public static KeyGenerator GetKeyGenerator(this IMemoryService memoryService, OSPlatform config, string moduleFilePath, ulong address, ulong size)
{
Stream stream = memoryService.CreateMemoryStream(address, size);
KeyGenerator generator = null;
if (config == OSPlatform.Linux)
{
var elfFile = new ELFFile(new StreamAddressSpace(stream), 0, true);
generator = new ELFFileKeyGenerator(Tracer.Instance, elfFile, moduleFilePath);
}
else if (config == OSPlatform.OSX)
{
var machOFile = new MachOFile(new StreamAddressSpace(stream), 0, true);
generator = new MachOFileKeyGenerator(Tracer.Instance, machOFile, moduleFilePath);
}
else if (config == OSPlatform.Windows)
{
var peFile = new PEFile(new StreamAddressSpace(stream), true);
generator = new PEFileKeyGenerator(Tracer.Instance, peFile, moduleFilePath);
}
else
{
Trace.TraceError("GetKeyGenerator: unsupported platform {0}", config);
}
return(generator);
}
/// <summary>
/// Finds or downloads the ELF module and creates a MachOFile instance for it.
/// </summary>
/// <param name="module">module instance</param>
/// <returns>MachO file instance or null</returns>
internal MachOFile GetMachOFile(IModule module)
{
string downloadFilePath = null;
MachOFile machoFile = null;
if (File.Exists(module.FileName))
{
// TODO - Need to verify the build id matches this local file
downloadFilePath = module.FileName;
}
else
{
if (SymbolService.IsSymbolStoreEnabled)
{
if (!module.BuildId.IsDefaultOrEmpty)
{
var key = MachOFileKeyGenerator.GetKeys(KeyTypeFlags.IdentityKey, module.FileName, module.BuildId.ToArray(), symbolFile: false, symbolFileName: null).SingleOrDefault();
if (key != null)
{
// Now download the module from the symbol server
downloadFilePath = SymbolService.DownloadFile(key);
}
}
}
}
if (!string.IsNullOrEmpty(downloadFilePath))
{
Trace.TraceInformation("GetMachOFile: downloaded {0}", downloadFilePath);
Stream stream;
try
{
stream = File.OpenRead(downloadFilePath);
}
catch (Exception ex) when(ex is DirectoryNotFoundException || ex is FileNotFoundException || ex is UnauthorizedAccessException || ex is IOException)
{
Trace.TraceError($"GetMachOFile: OpenRead exception {ex.Message}");
return(null);
}
try
{
machoFile = new MachOFile(new StreamAddressSpace(stream), position: 0, dataSourceIsVirtualAddressSpace: false);
if (!machoFile.IsValid())
{
return(null);
}
}
catch (Exception ex) when(ex is InvalidVirtualAddressException || ex is BadInputFormatException || ex is IOException)
{
Trace.TraceError($"GetMachOFile: exception {ex.Message}");
return(null);
}
}
return(machoFile);
}
/// <summary>
/// Load native symbols and modules (i.e. dac, dbi).
/// </summary>
/// <param name="callback">called back for each symbol file loaded</param>
/// <param name="parameter">callback parameter</param>
/// <param name="tempDirectory">temp directory unique to this instance of SOS</param>
/// <param name="moduleFilePath">module path</param>
/// <param name="address">module base address</param>
/// <param name="size">module size</param>
/// <param name="readMemory">read memory callback delegate</param>
public static void LoadNativeSymbols(SymbolFileCallback callback, IntPtr parameter, string tempDirectory, string moduleFilePath, ulong address, int size, ReadMemoryDelegate readMemory)
{
if (IsSymbolStoreEnabled())
{
Debug.Assert(s_tracer != null);
Stream stream = new TargetStream(address, size, readMemory);
KeyTypeFlags flags = KeyTypeFlags.SymbolKey | KeyTypeFlags.ClrKeys;
KeyGenerator generator = null;
if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
{
var elfFile = new ELFFile(new StreamAddressSpace(stream), 0, true);
generator = new ELFFileKeyGenerator(s_tracer, elfFile, moduleFilePath);
}
else if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
{
var machOFile = new MachOFile(new StreamAddressSpace(stream), 0, true);
generator = new MachOFileKeyGenerator(s_tracer, machOFile, moduleFilePath);
}
else if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
var peFile = new PEFile(new StreamAddressSpace(stream), true);
generator = new PEFileKeyGenerator(s_tracer, peFile, moduleFilePath);
}
else
{
return;
}
try
{
IEnumerable <SymbolStoreKey> keys = generator.GetKeys(flags);
foreach (SymbolStoreKey key in keys)
{
string moduleFileName = Path.GetFileName(key.FullPathName);
s_tracer.Verbose("{0} {1}", key.FullPathName, key.Index);
// Don't download the sos binaries that come with the runtime
if (moduleFileName != "SOS.NETCore.dll" && !moduleFileName.StartsWith("libsos."))
{
string downloadFilePath = GetSymbolFile(key, tempDirectory);
if (downloadFilePath != null)
{
s_tracer.Information("{0}: {1}", moduleFileName, downloadFilePath);
callback(parameter, moduleFileName, downloadFilePath);
}
}
}
}
catch (Exception ex) when(ex is BadInputFormatException || ex is InvalidVirtualAddressException)
{
s_tracer.Error("{0}/{1:X16}: {2}", moduleFilePath, address, ex.Message);
}
}
}
/// <summary>
/// Finds or downloads the MachO module.
/// </summary>
/// <param name="module">module instance</param>
/// <param name="flags"></param>
/// <returns>module path or null</returns>
private string DownloadMachO(IModule module, KeyTypeFlags flags)
{
if ((flags & (KeyTypeFlags.IdentityKey | KeyTypeFlags.SymbolKey)) == 0)
{
throw new ArgumentException($"Key flag not supported {flags}");
}
if (module.BuildId.IsDefaultOrEmpty)
{
Trace.TraceWarning($"DownloadMachO: module {module.FileName} has no build id");
return(null);
}
SymbolStoreKey fileKey = MachOFileKeyGenerator.GetKeys(flags, module.FileName, module.BuildId.ToArray(), symbolFile: false, module.GetSymbolFileName()).SingleOrDefault();
if (fileKey is null)
{
Trace.TraceWarning($"DownloadMachO: no index generated for module {module.FileName} ");
return(null);
}
// Check if the file is local and the key matches the module
string fileName = fileKey.FullPathName;
if (File.Exists(fileName))
{
using MachOModule machOModule = MachOModule.OpenFile(fileName);
if (machOModule is not null)
{
var generator = new MachOFileKeyGenerator(Tracer.Instance, machOModule, fileName);
IEnumerable <SymbolStoreKey> keys = generator.GetKeys(flags);
foreach (SymbolStoreKey key in keys)
{
if (fileKey.Equals(key))
{
Trace.TraceInformation("DownloadMachO: local file match {0}", fileName);
return(fileName);
}
}
}
}
// Now download the module from the symbol server if local file doesn't exists or doesn't have the right key
string downloadFilePath = DownloadFile(fileKey);
if (!string.IsNullOrEmpty(downloadFilePath))
{
Trace.TraceInformation("DownloadMachO: downloaded {0}", downloadFilePath);
return(downloadFilePath);
}
return(null);
}
/// <summary>
/// Finds or downloads the ELF module and creates a MachOFile instance for it.
/// </summary>
/// <param name="module">module instance</param>
/// <returns>MachO file instance or null</returns>
internal MachOFile GetMachOFile(IModule module)
{
if (module.BuildId.IsDefaultOrEmpty)
{
Trace.TraceWarning($"GetMachOFile: module {module.FileName} has no build id");
return(null);
}
SymbolStoreKey moduleKey = MachOFileKeyGenerator.GetKeys(KeyTypeFlags.IdentityKey, module.FileName, module.BuildId.ToArray(), symbolFile: false, symbolFileName: null).SingleOrDefault();
if (moduleKey is null)
{
Trace.TraceWarning($"GetMachOFile: no index generated for module {module.FileName} ");
return(null);
}
if (File.Exists(module.FileName))
{
MachOFile machOFile = OpenMachOFile(module.FileName);
if (machOFile is not null)
{
var generator = new MachOFileKeyGenerator(Tracer.Instance, machOFile, module.FileName);
IEnumerable <SymbolStoreKey> keys = generator.GetKeys(KeyTypeFlags.IdentityKey);
foreach (SymbolStoreKey key in keys)
{
if (moduleKey.Equals(key))
{
Trace.TraceInformation("GetMachOFile: local file match {0}", module.FileName);
return(machOFile);
}
}
}
}
// Now download the module from the symbol server if local file doesn't exists or doesn't have the right key
string downloadFilePath = SymbolService.DownloadFile(moduleKey);
if (!string.IsNullOrEmpty(downloadFilePath))
{
Trace.TraceInformation("GetMachOFile: downloaded {0}", downloadFilePath);
return(OpenMachOFile(downloadFilePath));
}
return(null);
}
private string DownloadModule(string moduleName, byte[] buildId)
{
Assert.True(buildId.Length > 0);
SymbolStoreKey key = null;
OSPlatform platform;
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
// This is the cross-DAC case when OpenVirtualProcess calls on a Linux/MacOS dump. Should never
// get here for a Windows dump or for live sessions (RegisterForRuntimeStartup, etc).
platform = _targetOS;
}
else if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
{
platform = OSPlatform.Linux;
}
else if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
{
platform = OSPlatform.OSX;
}
else
{
throw new NotSupportedException($"OS not supported {RuntimeInformation.OSDescription}");
}
if (platform == OSPlatform.Linux)
{
key = ELFFileKeyGenerator.GetKeys(KeyTypeFlags.IdentityKey, moduleName, buildId, symbolFile: false, symbolFileName: null).SingleOrDefault();
}
else if (platform == OSPlatform.OSX)
{
key = MachOFileKeyGenerator.GetKeys(KeyTypeFlags.IdentityKey, moduleName, buildId, symbolFile: false, symbolFileName: null).SingleOrDefault();
}
Assert.NotNull(key);
string downloadedPath = SymbolService.DownloadFile(key);
Assert.NotNull(downloadedPath);
return(downloadedPath);
}
/// <summary>
/// Load native symbols and modules (i.e. dac, dbi).
/// </summary>
/// <param name="callback">called back for each symbol file loaded</param>
/// <param name="parameter">callback parameter</param>
/// <param name="moduleDirectory">module path</param>
/// <param name="moduleFileName">module file name</param>
/// <param name="address">module base address</param>
/// <param name="size">module size</param>
/// <param name="readMemory">read memory callback delegate</param>
internal static void LoadNativeSymbols(SymbolFileCallback callback, IntPtr parameter, string tempDirectory, string moduleDirectory, string moduleFileName,
ulong address, int size, ReadMemoryDelegate readMemory)
{
if (s_symbolStore != null)
{
Debug.Assert(s_tracer != null);
string path = Path.Combine(moduleDirectory, moduleFileName);
Stream stream = new TargetStream(address, size, readMemory);
KeyTypeFlags flags = KeyTypeFlags.SymbolKey | KeyTypeFlags.ClrKeys;
KeyGenerator generator = null;
if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
{
var elfFile = new ELFFile(new StreamAddressSpace(stream), 0, true);
generator = new ELFFileKeyGenerator(s_tracer, elfFile, path);
}
else if (RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
{
var machOFile = new MachOFile(new StreamAddressSpace(stream), 0, true);
generator = new MachOFileKeyGenerator(s_tracer, machOFile, path);
}
else
{
return;
}
try
{
IEnumerable <SymbolStoreKey> keys = generator.GetKeys(flags);
foreach (SymbolStoreKey key in keys)
{
string symbolFileName = Path.GetFileName(key.FullPathName);
s_tracer.Verbose("{0} {1}", key.FullPathName, key.Index);
// Don't download the sos binaries that come with the runtime
if (symbolFileName != "SOS.NETCore.dll" && !symbolFileName.StartsWith("libsos."))
{
using (SymbolStoreFile file = GetSymbolStoreFile(key))
{
if (file != null)
{
try
{
string downloadFileName = file.FileName;
// If the downloaded doesn't already exists on disk in the cache, then write it to a temporary location.
if (!File.Exists(downloadFileName))
{
downloadFileName = Path.Combine(tempDirectory, symbolFileName);
using (Stream destinationStream = File.OpenWrite(downloadFileName)) {
file.Stream.CopyTo(destinationStream);
}
s_tracer.WriteLine("Downloaded symbol file {0}", key.FullPathName);
}
s_tracer.Information("{0}: {1}", symbolFileName, downloadFileName);
callback(parameter, symbolFileName, downloadFileName);
}
catch (Exception ex) when(ex is UnauthorizedAccessException || ex is DirectoryNotFoundException)
{
s_tracer.Error("{0}", ex.Message);
}
}
}
}
}
}
catch (Exception ex) when(ex is BadInputFormatException || ex is InvalidVirtualAddressException)
{
s_tracer.Error("Exception: {0}/{1}: {2:X16}", moduleDirectory, moduleFileName, address);
}
}
}
/// <summary>
/// Load native symbols and modules (i.e. DAC, DBI).
/// </summary>
/// <param name="callback">called back for each symbol file loaded</param>
/// <param name="parameter">callback parameter</param>
/// <param name="config">Target configuration: Windows, Linux or OSX</param>
/// <param name="moduleFilePath">module path</param>
/// <param name="address">module base address</param>
/// <param name="size">module size</param>
/// <param name="readMemory">read memory callback delegate</param>
private void LoadNativeSymbols(
IntPtr self,
SymbolFileCallback callback,
IntPtr parameter,
RuntimeConfiguration config,
string moduleFilePath,
ulong address,
uint size)
{
if (_symbolService.IsSymbolStoreEnabled)
{
try
{
Stream stream = MemoryService.CreateMemoryStream(address, size);
KeyGenerator generator = null;
if (config == RuntimeConfiguration.UnixCore)
{
var elfFile = new ELFFile(new StreamAddressSpace(stream), 0, true);
generator = new ELFFileKeyGenerator(Tracer.Instance, elfFile, moduleFilePath);
}
else if (config == RuntimeConfiguration.OSXCore)
{
var machOFile = new MachOFile(new StreamAddressSpace(stream), 0, true);
generator = new MachOFileKeyGenerator(Tracer.Instance, machOFile, moduleFilePath);
}
else if (config == RuntimeConfiguration.WindowsCore || config == RuntimeConfiguration.WindowsDesktop)
{
var peFile = new PEFile(new StreamAddressSpace(stream), true);
generator = new PEFileKeyGenerator(Tracer.Instance, peFile, moduleFilePath);
}
else
{
Trace.TraceError("LoadNativeSymbols: unsupported config {0}", config);
}
if (generator != null)
{
IEnumerable <SymbolStoreKey> keys = generator.GetKeys(KeyTypeFlags.SymbolKey | KeyTypeFlags.DacDbiKeys);
foreach (SymbolStoreKey key in keys)
{
string moduleFileName = Path.GetFileName(key.FullPathName);
Trace.TraceInformation("{0} {1}", key.FullPathName, key.Index);
string downloadFilePath = _symbolService.DownloadFile(key);
if (downloadFilePath != null)
{
Trace.TraceInformation("{0}: {1}", moduleFileName, downloadFilePath);
callback(parameter, moduleFileName, downloadFilePath);
}
}
}
}
catch (Exception ex) when
(ex is DiagnosticsException ||
ex is BadInputFormatException ||
ex is InvalidVirtualAddressException ||
ex is ArgumentOutOfRangeException ||
ex is IndexOutOfRangeException ||
ex is TaskCanceledException)
{
Trace.TraceError("{0} address {1:X16}: {2}", moduleFilePath, address, ex.Message);
}
}
}
private string DownloadFile(string fileName)
{
OSPlatform platform = _target.OperatingSystem;
string filePath = null;
if (SymbolService.IsSymbolStoreEnabled)
{
SymbolStoreKey key = null;
if (platform == OSPlatform.Windows)
{
// It is the coreclr.dll's id (timestamp/filesize) in the DacInfo used to download the the dac module.
if (_clrInfo.DacInfo.IndexTimeStamp != 0 && _clrInfo.DacInfo.IndexFileSize != 0)
{
key = PEFileKeyGenerator.GetKey(fileName, (uint)_clrInfo.DacInfo.IndexTimeStamp, (uint)_clrInfo.DacInfo.IndexFileSize);
}
else
{
Trace.TraceError($"DownloadFile: {fileName}: key not generated - no index timestamp/filesize");
}
}
else
{
// Use the runtime's build id to download the the dac module.
if (!_clrInfo.DacInfo.ClrBuildId.IsDefaultOrEmpty)
{
byte[] buildId = _clrInfo.DacInfo.ClrBuildId.ToArray();
IEnumerable <SymbolStoreKey> keys = null;
if (platform == OSPlatform.Linux)
{
keys = ELFFileKeyGenerator.GetKeys(KeyTypeFlags.DacDbiKeys, "libcoreclr.so", buildId, symbolFile: false, symbolFileName: null);
}
else if (platform == OSPlatform.OSX)
{
keys = MachOFileKeyGenerator.GetKeys(KeyTypeFlags.DacDbiKeys, "libcoreclr.dylib", buildId, symbolFile: false, symbolFileName: null);
}
else
{
Trace.TraceError($"DownloadFile: {fileName}: platform not supported - {platform}");
}
key = keys?.SingleOrDefault((k) => Path.GetFileName(k.FullPathName) == fileName);
}
else
{
Trace.TraceError($"DownloadFile: {fileName}: key not generated - no index time stamp or file size");
}
}
if (key is not null)
{
// Now download the DAC module from the symbol server
filePath = SymbolService.DownloadFile(key);
}
}
else
{
Trace.TraceInformation($"DownLoadFile: {fileName}: symbol store not enabled");
}
return(filePath);
}