1 //------------------------------------------------------------------------------
3 // System.Environment.cs
5 // Copyright (C) 2001 Moonlight Enterprises, All Rights Reserved
7 // Author: Jim Richardson, develop@wtfo-guru.com
8 // Dan Lewis (dihlewis@yahoo.co.uk)
9 // Created: Saturday, August 11, 2001
11 //------------------------------------------------------------------------------
13 // Copyright (C) 2004-2005 Novell, Inc (http://www.novell.com)
15 // Permission is hereby granted, free of charge, to any person obtaining
16 // a copy of this software and associated documentation files (the
17 // "Software"), to deal in the Software without restriction, including
18 // without limitation the rights to use, copy, modify, merge, publish,
19 // distribute, sublicense, and/or sell copies of the Software, and to
20 // permit persons to whom the Software is furnished to do so, subject to
21 // the following conditions:
23 // The above copyright notice and this permission notice shall be
24 // included in all copies or substantial portions of the Software.
26 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
27 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
28 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
29 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
30 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
31 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
32 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
36 using System.Collections;
37 using System.Runtime.CompilerServices;
38 using System.Security;
39 using System.Security.Permissions;
41 using System.Runtime.InteropServices;
42 using System.Threading;
43 using System.Diagnostics.Contracts;
48 public static partial class Environment {
51 * This is the version number of the corlib-runtime interface. When
52 * making changes to this interface (by changing the layout
53 * of classes the runtime knows about, changing icall signature or
54 * semantics etc), increment this variable. Also increment the
55 * pair of this variable in the runtime in metadata/appdomain.c.
56 * Changes which are already detected at runtime, like the addition
57 * of icalls, do not require an increment.
59 #pragma warning disable 169
60 private const int mono_corlib_version = 143;
61 #pragma warning restore 169
64 public enum SpecialFolder
77 DesktopDirectory = 0x10,
79 ApplicationData = 0x1a,
80 LocalApplicationData = 0x1c,
84 CommonApplicationData = 0x23,
88 CommonProgramFiles = 0x2b,
90 NetworkShortcuts = 0x13,
92 CommonStartMenu = 0x16,
93 CommonPrograms = 0x17,
95 CommonDesktopDirectory = 0x19,
96 PrinterShortcuts = 0x1b,
100 ProgramFilesX86 = 0x2a,
101 CommonProgramFilesX86 = 0x2c,
102 CommonTemplates = 0x2d,
103 CommonDocuments = 0x2e,
104 CommonAdminTools = 0x2f,
107 CommonPictures = 0x36,
110 LocalizedResources = 0x39,
111 CommonOemLinks = 0x3a,
116 enum SpecialFolderOption {
118 DoNotVerify = 0x4000,
123 /// Gets the command line for this process
125 public static string CommandLine {
126 // note: security demand inherited from calling GetCommandLineArgs
128 StringBuilder sb = new StringBuilder ();
129 foreach (string str in GetCommandLineArgs ()) {
133 for (int i = 0; i < s.Length; i++) {
134 if (quote.Length == 0 && Char.IsWhiteSpace (s [i])) {
136 } else if (s [i] == '"') {
140 if (escape && quote.Length != 0) {
141 s = s.Replace ("\"", "\\\"");
143 sb.AppendFormat ("{0}{1}{0} ", quote, s);
147 return sb.ToString ();
152 /// Gets or sets the current directory. Actually this is supposed to get
153 /// and/or set the process start directory acording to the documentation
154 /// but actually test revealed at beta2 it is just Getting/Setting the CurrentDirectory
156 public static string CurrentDirectory
159 return Directory.GetCurrentDirectory ();
162 Directory.SetCurrentDirectory (value);
166 public static int CurrentManagedThreadId {
168 return Thread.CurrentThread.ManagedThreadId;
173 /// Gets or sets the exit code of this process
175 public extern static int ExitCode
177 [MethodImplAttribute (MethodImplOptions.InternalCall)]
179 [MethodImplAttribute (MethodImplOptions.InternalCall)]
183 static public extern bool HasShutdownStarted
185 [MethodImplAttribute (MethodImplOptions.InternalCall)]
191 /// Gets the name of the local computer
193 public extern static string MachineName {
194 [MethodImplAttribute (MethodImplOptions.InternalCall)]
195 [EnvironmentPermission (SecurityAction.Demand, Read="COMPUTERNAME")]
196 [SecurityPermission (SecurityAction.Demand, UnmanagedCode=true)]
200 [MethodImplAttribute (MethodImplOptions.InternalCall)]
201 extern static string GetNewLine ();
205 /// Gets the standard new line value
207 public static string NewLine {
218 // Support methods and fields for OSVersion property
220 static OperatingSystem os;
222 static extern PlatformID Platform {
223 [MethodImplAttribute (MethodImplOptions.InternalCall)]
227 [MethodImplAttribute (MethodImplOptions.InternalCall)]
228 internal static extern string GetOSVersionString ();
231 /// Gets the current OS version information
233 public static OperatingSystem OSVersion {
236 Version v = CreateVersionFromString (GetOSVersionString ());
237 PlatformID p = Platform;
238 if (p == PlatformID.MacOSX)
240 os = new OperatingSystem (p, v);
247 // a very gentle way to construct a Version object which takes
248 // the first four numbers in a string as the version
249 internal static Version CreateVersionFromString (string info)
256 int number = -1; // string may not begin with a digit
259 return new Version (0, 0, 0, 0);
261 for (int i=0; i < info.Length; i++) {
263 if (Char.IsDigit (c)) {
268 number = (number * 10) + (c - '0');
271 else if (number >= 0) {
290 // ignore end of string
312 return new Version (major, minor, build, revision);
318 public static string StackTrace {
319 [EnvironmentPermission (SecurityAction.Demand, Unrestricted=true)]
321 System.Diagnostics.StackTrace trace = new System.Diagnostics.StackTrace (0, true);
322 return trace.ToString ();
327 /// Get a fully qualified path to the system directory
329 public static string SystemDirectory {
331 return GetFolderPath (SpecialFolder.System);
336 /// Get the number of milliseconds that have elapsed since the system was booted
338 public extern static int TickCount {
339 [MethodImplAttribute (MethodImplOptions.InternalCall)]
344 /// Get UserDomainName
346 public static string UserDomainName {
347 // FIXME: this variable doesn't exist (at least not on WinXP) - reported to MS as FDBK20562
348 [EnvironmentPermission (SecurityAction.Demand, Read="USERDOMAINNAME")]
355 /// Gets a flag indicating whether the process is in interactive mode
357 [MonoTODO ("Currently always returns false, regardless of interactive state")]
358 public static bool UserInteractive {
365 /// Get the user name of current process is running under
367 public extern static string UserName {
368 [MethodImplAttribute (MethodImplOptions.InternalCall)]
369 [EnvironmentPermission (SecurityAction.Demand, Read="USERNAME;USER")]
374 /// Get the version of the common language runtime
376 public static Version Version {
378 return new Version (Consts.EnvironmentVersion);
383 /// Get the amount of physical memory mapped to process
385 [MonoTODO ("Currently always returns zero")]
386 public static long WorkingSet {
387 [EnvironmentPermission (SecurityAction.Demand, Unrestricted=true)]
391 [MethodImplAttribute (MethodImplOptions.InternalCall)]
392 [SecurityPermission (SecurityAction.Demand, UnmanagedCode=true)]
393 public extern static void Exit (int exitCode);
395 internal static void _Exit (int exitCode)
401 /// Substitute environment variables in the argument "name"
403 public static string ExpandEnvironmentVariables (string name)
406 throw new ArgumentNullException ("name");
408 int off1 = name.IndexOf ('%');
412 int len = name.Length;
414 if (off1 == len - 1 || (off2 = name.IndexOf ('%', off1 + 1)) == -1)
417 StringBuilder result = new StringBuilder ();
418 result.Append (name, 0, off1);
419 Hashtable tbl = null;
421 string var = name.Substring (off1 + 1, off2 - off1 - 1);
422 string value = GetEnvironmentVariable (var);
423 if (value == null && Environment.IsRunningOnWindows) {
424 // On windows, env. vars. are case insensitive
426 tbl = GetEnvironmentVariablesNoCase ();
428 value = tbl [var] as string;
431 // If value not found, add %FOO to stream,
432 // and use the closing % for the next iteration.
433 // If value found, expand it in place of %FOO%
434 int realOldOff2 = off2;
440 result.Append (value);
443 off1 = name.IndexOf ('%', off2 + 1);
444 // If no % found for off1, don't look for one for off2
445 off2 = (off1 == -1 || off2 > len-1)? -1 :name.IndexOf ('%', off1 + 1);
446 // textLen is the length of text between the closing % of current iteration
447 // and the starting % of the next iteration if any. This text is added to output
449 // If no new % found, use all the remaining text
450 if (off1 == -1 || off2 == -1)
451 textLen = len - oldOff2 - 1;
452 // If value found in current iteration, use text after current closing % and next %
453 else if(value != null)
454 textLen = off1 - oldOff2 - 1;
455 // If value not found in current iteration, but a % was found for next iteration,
456 // use text from current closing % to the next %.
458 textLen = off1 - realOldOff2;
459 if(off1 >= oldOff2 || off1 == -1)
460 result.Append (name, oldOff2+1, textLen);
461 } while (off2 > -1 && off2 < len);
463 return result.ToString ();
468 /// Return an array of the command line arguments of the current process
470 [MethodImplAttribute (MethodImplOptions.InternalCall)]
471 [EnvironmentPermissionAttribute (SecurityAction.Demand, Read = "PATH")]
472 public extern static string[] GetCommandLineArgs ();
474 [MethodImplAttribute (MethodImplOptions.InternalCall)]
475 internal extern static string internalGetEnvironmentVariable (string variable);
478 /// Return a string containing the value of the environment
479 /// variable identifed by parameter "variable"
481 public static string GetEnvironmentVariable (string variable)
484 if (SecurityManager.SecurityEnabled) {
485 new EnvironmentPermission (EnvironmentPermissionAccess.Read, variable).Demand ();
488 return internalGetEnvironmentVariable (variable);
491 static Hashtable GetEnvironmentVariablesNoCase ()
493 Hashtable vars = new Hashtable (CaseInsensitiveHashCodeProvider.Default,
494 CaseInsensitiveComparer.Default);
496 foreach (string name in GetEnvironmentVariableNames ()) {
497 vars [name] = internalGetEnvironmentVariable (name);
504 /// Return a set of all environment variables and their values
507 public static IDictionary GetEnvironmentVariables ()
509 StringBuilder sb = null;
510 if (SecurityManager.SecurityEnabled) {
511 // we must have access to each variable to get the lot
512 sb = new StringBuilder ();
513 // but (performance-wise) we do not want a stack-walk
514 // for each of them so we concatenate them
517 Hashtable vars = new Hashtable ();
518 foreach (string name in GetEnvironmentVariableNames ()) {
519 vars [name] = internalGetEnvironmentVariable (name);
527 new EnvironmentPermission (EnvironmentPermissionAccess.Read, sb.ToString ()).Demand ();
532 [EnvironmentPermission (SecurityAction.Demand, Unrestricted=true)]
533 public static IDictionary GetEnvironmentVariables ()
535 Hashtable vars = new Hashtable ();
536 foreach (string name in GetEnvironmentVariableNames ()) {
537 vars [name] = internalGetEnvironmentVariable (name);
544 /// Returns the fully qualified path of the
545 /// folder specified by the "folder" parameter
547 public static string GetFolderPath (SpecialFolder folder)
549 return GetFolderPath (folder, SpecialFolderOption.None);
553 [MethodImplAttribute (MethodImplOptions.InternalCall)]
554 private extern static string GetWindowsFolderPath (int folder);
557 static string GetFolderPath(SpecialFolder folder, SpecialFolderOption option)
559 SecurityManager.EnsureElevatedPermissions (); // this is a no-op outside moonlight
563 if (Environment.IsRunningOnWindows)
564 dir = GetWindowsFolderPath ((int) folder);
566 dir = UnixGetFolderPath (folder, option);
569 if ((dir != null) && (dir.Length > 0) && SecurityManager.SecurityEnabled) {
570 new FileIOPermission (FileIOPermissionAccess.PathDiscovery, dir).Demand ();
576 private static string ReadXdgUserDir (string config_dir, string home_dir, string key, string fallback)
578 string env_path = internalGetEnvironmentVariable (key);
579 if (env_path != null && env_path != String.Empty) {
583 string user_dirs_path = Path.Combine (config_dir, "user-dirs.dirs");
585 if (!File.Exists (user_dirs_path)) {
586 return Path.Combine (home_dir, fallback);
590 using(StreamReader reader = new StreamReader (user_dirs_path)) {
592 while ((line = reader.ReadLine ()) != null) {
594 int delim_index = line.IndexOf ('=');
595 if(delim_index > 8 && line.Substring (0, delim_index) == key) {
596 string path = line.Substring (delim_index + 1).Trim ('"');
597 bool relative = false;
599 if (path.StartsWithOrdinalUnchecked ("$HOME/")) {
601 path = path.Substring (6);
602 } else if (!path.StartsWithOrdinalUnchecked ("/")) {
606 return relative ? Path.Combine (home_dir, path) : path;
610 } catch (FileNotFoundException) {
613 return Path.Combine (home_dir, fallback);
617 // the security runtime (and maybe other parts of corlib) needs the
618 // information to initialize themselves before permissions can be checked
619 internal static string UnixGetFolderPath (SpecialFolder folder, SpecialFolderOption option)
621 string home = internalGetHome ();
623 // http://freedesktop.org/Standards/basedir-spec/basedir-spec-0.6.html
625 // note: skip security check for environment variables
626 string data = internalGetEnvironmentVariable ("XDG_DATA_HOME");
627 if ((data == null) || (data == String.Empty)) {
628 data = Path.Combine (home, ".local");
629 data = Path.Combine (data, "share");
632 // note: skip security check for environment variables
633 string config = internalGetEnvironmentVariable ("XDG_CONFIG_HOME");
634 if ((config == null) || (config == String.Empty)) {
635 config = Path.Combine (home, ".config");
639 // MyComputer is a virtual directory
640 case SpecialFolder.MyComputer:
644 case SpecialFolder.Personal:
647 // use FDO's CONFIG_HOME. This data will be synced across a network like the windows counterpart.
648 case SpecialFolder.ApplicationData:
651 //use FDO's DATA_HOME. This is *NOT* synced
652 case SpecialFolder.LocalApplicationData:
655 case SpecialFolder.Desktop:
656 case SpecialFolder.DesktopDirectory:
657 return ReadXdgUserDir (config, home, "XDG_DESKTOP_DIR", "Desktop");
659 case SpecialFolder.MyMusic:
660 if (Platform == PlatformID.MacOSX)
661 return Path.Combine (home, "Music");
663 return ReadXdgUserDir (config, home, "XDG_MUSIC_DIR", "Music");
665 case SpecialFolder.MyPictures:
666 if (Platform == PlatformID.MacOSX)
667 return Path.Combine (home, "Pictures");
669 return ReadXdgUserDir (config, home, "XDG_PICTURES_DIR", "Pictures");
671 case SpecialFolder.Templates:
672 return ReadXdgUserDir (config, home, "XDG_TEMPLATES_DIR", "Templates");
673 case SpecialFolder.MyVideos:
674 return ReadXdgUserDir (config, home, "XDG_VIDEOS_DIR", "Videos");
675 case SpecialFolder.CommonTemplates:
676 return "/usr/share/templates";
677 case SpecialFolder.Fonts:
678 if (Platform == PlatformID.MacOSX)
679 return Path.Combine (home, "Library", "Fonts");
681 return Path.Combine (home, ".fonts");
682 // these simply dont exist on Linux
683 // The spec says if a folder doesnt exist, we
685 case SpecialFolder.Favorites:
686 if (Platform == PlatformID.MacOSX)
687 return Path.Combine (home, "Library", "Favorites");
691 case SpecialFolder.ProgramFiles:
692 if (Platform == PlatformID.MacOSX)
693 return "/Applications";
697 case SpecialFolder.InternetCache:
698 if (Platform == PlatformID.MacOSX)
699 return Path.Combine (home, "Library", "Caches");
704 case SpecialFolder.UserProfile:
707 case SpecialFolder.Programs:
708 case SpecialFolder.SendTo:
709 case SpecialFolder.StartMenu:
710 case SpecialFolder.Startup:
711 case SpecialFolder.Cookies:
712 case SpecialFolder.History:
713 case SpecialFolder.Recent:
714 case SpecialFolder.CommonProgramFiles:
715 case SpecialFolder.System:
716 case SpecialFolder.NetworkShortcuts:
717 case SpecialFolder.CommonStartMenu:
718 case SpecialFolder.CommonPrograms:
719 case SpecialFolder.CommonStartup:
720 case SpecialFolder.CommonDesktopDirectory:
721 case SpecialFolder.PrinterShortcuts:
722 case SpecialFolder.Windows:
723 case SpecialFolder.SystemX86:
724 case SpecialFolder.ProgramFilesX86:
725 case SpecialFolder.CommonProgramFilesX86:
726 case SpecialFolder.CommonDocuments:
727 case SpecialFolder.CommonAdminTools:
728 case SpecialFolder.AdminTools:
729 case SpecialFolder.CommonMusic:
730 case SpecialFolder.CommonPictures:
731 case SpecialFolder.CommonVideos:
732 case SpecialFolder.Resources:
733 case SpecialFolder.LocalizedResources:
734 case SpecialFolder.CommonOemLinks:
735 case SpecialFolder.CDBurning:
737 // This is where data common to all users goes
738 case SpecialFolder.CommonApplicationData:
741 throw new ArgumentException ("Invalid SpecialFolder");
747 [EnvironmentPermission (SecurityAction.Demand, Unrestricted=true)]
748 public static string[] GetLogicalDrives ()
750 return GetLogicalDrivesInternal ();
754 [MethodImplAttribute (MethodImplOptions.InternalCall)]
755 private static extern void internalBroadcastSettingChange ();
757 public static string GetEnvironmentVariable (string variable, EnvironmentVariableTarget target)
760 case EnvironmentVariableTarget.Process:
761 return GetEnvironmentVariable (variable);
762 case EnvironmentVariableTarget.Machine:
763 new EnvironmentPermission (PermissionState.Unrestricted).Demand ();
764 if (!IsRunningOnWindows)
766 using (Microsoft.Win32.RegistryKey env = Microsoft.Win32.Registry.LocalMachine.OpenSubKey (@"SYSTEM\CurrentControlSet\Control\Session Manager\Environment")) {
767 object regvalue = env.GetValue (variable);
768 return (regvalue == null) ? null : regvalue.ToString ();
770 case EnvironmentVariableTarget.User:
771 new EnvironmentPermission (PermissionState.Unrestricted).Demand ();
772 if (!IsRunningOnWindows)
774 using (Microsoft.Win32.RegistryKey env = Microsoft.Win32.Registry.CurrentUser.OpenSubKey ("Environment", false)) {
775 object regvalue = env.GetValue (variable);
776 return (regvalue == null) ? null : regvalue.ToString ();
779 throw new ArgumentException ("target");
783 public static IDictionary GetEnvironmentVariables (EnvironmentVariableTarget target)
785 IDictionary variables = (IDictionary)new Hashtable ();
787 case EnvironmentVariableTarget.Process:
788 variables = GetEnvironmentVariables ();
790 case EnvironmentVariableTarget.Machine:
791 new EnvironmentPermission (PermissionState.Unrestricted).Demand ();
792 if (IsRunningOnWindows) {
793 using (Microsoft.Win32.RegistryKey env = Microsoft.Win32.Registry.LocalMachine.OpenSubKey (@"SYSTEM\CurrentControlSet\Control\Session Manager\Environment")) {
794 string[] value_names = env.GetValueNames ();
795 foreach (string value_name in value_names)
796 variables.Add (value_name, env.GetValue (value_name));
800 case EnvironmentVariableTarget.User:
801 new EnvironmentPermission (PermissionState.Unrestricted).Demand ();
802 if (IsRunningOnWindows) {
803 using (Microsoft.Win32.RegistryKey env = Microsoft.Win32.Registry.CurrentUser.OpenSubKey ("Environment")) {
804 string[] value_names = env.GetValueNames ();
805 foreach (string value_name in value_names)
806 variables.Add (value_name, env.GetValue (value_name));
811 throw new ArgumentException ("target");
816 [EnvironmentPermission (SecurityAction.Demand, Unrestricted=true)]
817 public static void SetEnvironmentVariable (string variable, string value)
819 SetEnvironmentVariable (variable, value, EnvironmentVariableTarget.Process);
822 [EnvironmentPermission (SecurityAction.Demand, Unrestricted = true)]
823 public static void SetEnvironmentVariable (string variable, string value, EnvironmentVariableTarget target)
825 if (variable == null)
826 throw new ArgumentNullException ("variable");
827 if (variable == String.Empty)
828 throw new ArgumentException ("String cannot be of zero length.", "variable");
829 if (variable.IndexOf ('=') != -1)
830 throw new ArgumentException ("Environment variable name cannot contain an equal character.", "variable");
831 if (variable[0] == '\0')
832 throw new ArgumentException ("The first char in the string is the null character.", "variable");
835 case EnvironmentVariableTarget.Process:
836 InternalSetEnvironmentVariable (variable, value);
838 case EnvironmentVariableTarget.Machine:
839 if (!IsRunningOnWindows)
841 using (Microsoft.Win32.RegistryKey env = Microsoft.Win32.Registry.LocalMachine.OpenSubKey (@"SYSTEM\CurrentControlSet\Control\Session Manager\Environment", true)) {
842 if (String.IsNullOrEmpty (value))
843 env.DeleteValue (variable, false);
845 env.SetValue (variable, value);
846 internalBroadcastSettingChange ();
849 case EnvironmentVariableTarget.User:
850 if (!IsRunningOnWindows)
852 using (Microsoft.Win32.RegistryKey env = Microsoft.Win32.Registry.CurrentUser.OpenSubKey ("Environment", true)) {
853 if (String.IsNullOrEmpty (value))
854 env.DeleteValue (variable, false);
856 env.SetValue (variable, value);
857 internalBroadcastSettingChange ();
861 throw new ArgumentException ("target");
865 public static void SetEnvironmentVariable (string variable, string value)
867 if (variable == null)
868 throw new ArgumentNullException ("variable");
869 if (variable == String.Empty)
870 throw new ArgumentException ("String cannot be of zero length.", "variable");
871 if (variable.IndexOf ('=') != -1)
872 throw new ArgumentException ("Environment variable name cannot contain an equal character.", "variable");
873 if (variable[0] == '\0')
874 throw new ArgumentException ("The first char in the string is the null character.", "variable");
876 InternalSetEnvironmentVariable (variable, value);
879 [MethodImplAttribute (MethodImplOptions.InternalCall)]
880 internal static extern void InternalSetEnvironmentVariable (string variable, string value);
882 [SecurityPermission (SecurityAction.LinkDemand, UnmanagedCode=true)]
883 public static void FailFast (string message)
885 throw new NotImplementedException ();
888 internal static void FailFast (String message, uint exitCode)
890 throw new NotImplementedException ();
894 public static void FailFast (string message, Exception exception)
896 throw new NotImplementedException ();
899 [MethodImplAttribute (MethodImplOptions.InternalCall)]
900 extern static bool GetIs64BitOperatingSystem ();
902 public static bool Is64BitOperatingSystem {
903 get { return GetIs64BitOperatingSystem (); }
906 public static int SystemPageSize {
907 get { return GetPageSize (); }
911 static bool Is64BitProcess {
912 get { return IntPtr.Size == 8; }
915 public static extern int ProcessorCount {
916 [EnvironmentPermission (SecurityAction.Demand, Read="NUMBER_OF_PROCESSORS")]
917 [MethodImplAttribute (MethodImplOptions.InternalCall)]
922 #if (MONOTOUCH || MONODROID || XAMMAC)
923 internal const bool IsRunningOnWindows = false;
925 internal static bool IsRunningOnWindows {
926 get { return ((int) Platform < 4); }
932 // Used by gacutil.exe
934 #pragma warning disable 169
935 private static string GacPath {
937 if (Environment.IsRunningOnWindows) {
938 /* On windows, we don't know the path where mscorlib.dll will be installed */
939 string corlibDir = new DirectoryInfo (Path.GetDirectoryName (typeof (int).Assembly.Location)).Parent.Parent.FullName;
940 return Path.Combine (Path.Combine (corlibDir, "mono"), "gac");
943 return Path.Combine (Path.Combine (internalGetGacPath (), "mono"), "gac");
946 #pragma warning restore 169
947 [MethodImplAttribute (MethodImplOptions.InternalCall)]
948 internal extern static string internalGetGacPath ();
950 [MethodImplAttribute (MethodImplOptions.InternalCall)]
951 private extern static string [] GetLogicalDrivesInternal ();
953 [MethodImplAttribute (MethodImplOptions.InternalCall)]
954 private extern static string [] GetEnvironmentVariableNames ();
956 [MethodImplAttribute (MethodImplOptions.InternalCall)]
957 internal extern static string GetMachineConfigPath ();
959 [MethodImplAttribute (MethodImplOptions.InternalCall)]
960 internal extern static string internalGetHome ();
962 [MethodImplAttribute (MethodImplOptions.InternalCall)]
963 internal extern static int GetPageSize ();
965 static internal bool IsUnix {
967 int platform = (int) Environment.Platform;
969 return (platform == 4 || platform == 128 || platform == 6);
972 static internal bool IsMacOS {
974 return Environment.Platform == PlatformID.MacOSX;
978 internal static bool IsCLRHosted {
984 internal static void TriggerCodeContractFailure(ContractFailureKind failureKind, String message, String condition, String exceptionAsString)