Code:
/ FXUpdate3074 / FXUpdate3074 / 1.1 / untmp / whidbey / QFE / ndp / clr / src / BCL / System / Security / AccessControl / MutexSecurity.cs / 1 / MutexSecurity.cs
// ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== /*============================================================ ** ** Class: MutexSecurity ** ** ** Purpose: Managed ACL wrapper for Win32 mutexes. ** ** ===========================================================*/ using System; using System.Collections; using System.Security.Permissions; using System.Security.Principal; using Microsoft.Win32; using Microsoft.Win32.SafeHandles; using System.Runtime.InteropServices; using System.IO; using System.Threading; namespace System.Security.AccessControl { // Derive this list of values from winnt.h and MSDN docs: // http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dllproc/base/synchronization_object_security_and_access_rights.asp // In order to call ReleaseMutex, you must have an ACL granting you // MUTEX_MODIFY_STATE rights (0x0001). The other interesting value // in a Mutex's ACL is MUTEX_ALL_ACCESS (0x1F0001). // You need SYNCHRONIZE to be able to open a handle to a mutex. [Flags] public enum MutexRights { Modify = 0x000001, Delete = 0x010000, ReadPermissions = 0x020000, ChangePermissions = 0x040000, TakeOwnership = 0x080000, Synchronize = 0x100000, // SYNCHRONIZE FullControl = 0x1F0001 } public sealed class MutexAccessRule : AccessRule { // Constructor for creating access rules for registry objects public MutexAccessRule(IdentityReference identity, MutexRights eventRights, AccessControlType type) : this(identity, (int) eventRights, false, InheritanceFlags.None, PropagationFlags.None, type) { } public MutexAccessRule(String identity, MutexRights eventRights, AccessControlType type) : this(new NTAccount(identity), (int) eventRights, false, InheritanceFlags.None, PropagationFlags.None, type) { } // // Internal constructor to be called by public constructors // and the access rule factory methods of {File|Folder}Security // internal MutexAccessRule( IdentityReference identity, int accessMask, bool isInherited, InheritanceFlags inheritanceFlags, PropagationFlags propagationFlags, AccessControlType type ) : base( identity, accessMask, isInherited, inheritanceFlags, propagationFlags, type ) { } public MutexRights MutexRights { get { return (MutexRights) base.AccessMask; } } } public sealed class MutexAuditRule : AuditRule { public MutexAuditRule(IdentityReference identity, MutexRights eventRights, AuditFlags flags) : this(identity, (int) eventRights, false, InheritanceFlags.None, PropagationFlags.None, flags) { } /* // Not in the spec public MutexAuditRule(string identity, MutexRights eventRights, AuditFlags flags) : this(new NTAccount(identity), (int) eventRights, false, InheritanceFlags.None, PropagationFlags.None, flags) { } */ internal MutexAuditRule(IdentityReference identity, int accessMask, bool isInherited, InheritanceFlags inheritanceFlags, PropagationFlags propagationFlags, AuditFlags flags) : base(identity, accessMask, isInherited, inheritanceFlags, propagationFlags, flags) { } public MutexRights MutexRights { get { return (MutexRights) base.AccessMask; } } } public sealed class MutexSecurity : NativeObjectSecurity { public MutexSecurity() : base(true, ResourceType.KernelObject) { } public MutexSecurity(String name, AccessControlSections includeSections) : base(true, ResourceType.KernelObject, name, includeSections, _HandleErrorCode, null) { // Let the underlying ACL API's demand unmanaged code permission. } internal MutexSecurity(SafeWaitHandle handle, AccessControlSections includeSections) : base(true, ResourceType.KernelObject, handle, includeSections, _HandleErrorCode, null) { // Let the underlying ACL API's demand unmanaged code permission. } private static Exception _HandleErrorCode(int errorCode, string name, SafeHandle handle, object context) { System.Exception exception = null; switch (errorCode) { case Win32Native.ERROR_INVALID_NAME: case Win32Native.ERROR_INVALID_HANDLE: case Win32Native.ERROR_FILE_NOT_FOUND: if ((name != null) && (name.Length != 0)) exception = new WaitHandleCannotBeOpenedException(Environment.GetResourceString("Threading.WaitHandleCannotBeOpenedException_InvalidHandle", name)); else exception = new WaitHandleCannotBeOpenedException(); break; default: break; } return exception; } public override AccessRule AccessRuleFactory(IdentityReference identityReference, int accessMask, bool isInherited, InheritanceFlags inheritanceFlags, PropagationFlags propagationFlags, AccessControlType type) { return new MutexAccessRule(identityReference, accessMask, isInherited, inheritanceFlags, propagationFlags, type); } public override AuditRule AuditRuleFactory(IdentityReference identityReference, int accessMask, bool isInherited, InheritanceFlags inheritanceFlags, PropagationFlags propagationFlags, AuditFlags flags) { return new MutexAuditRule(identityReference, accessMask, isInherited, inheritanceFlags, propagationFlags, flags); } internal AccessControlSections GetAccessControlSectionsFromChanges() { AccessControlSections persistRules = AccessControlSections.None; if (AccessRulesModified) persistRules = AccessControlSections.Access; if (AuditRulesModified) persistRules |= AccessControlSections.Audit; if (OwnerModified) persistRules |= AccessControlSections.Owner; if (GroupModified) persistRules |= AccessControlSections.Group; return persistRules; } internal void Persist(SafeWaitHandle handle) { // Let the underlying ACL API's demand unmanaged code. WriteLock(); try { AccessControlSections persistSections = GetAccessControlSectionsFromChanges(); if (persistSections == AccessControlSections.None) return; // Don't need to persist anything. base.Persist(handle, persistSections); OwnerModified = GroupModified = AuditRulesModified = AccessRulesModified = false; } finally { WriteUnlock(); } } public void AddAccessRule(MutexAccessRule rule) { base.AddAccessRule(rule); } public void SetAccessRule(MutexAccessRule rule) { base.SetAccessRule(rule); } public void ResetAccessRule(MutexAccessRule rule) { base.ResetAccessRule(rule); } public bool RemoveAccessRule(MutexAccessRule rule) { return base.RemoveAccessRule(rule); } public void RemoveAccessRuleAll(MutexAccessRule rule) { base.RemoveAccessRuleAll(rule); } public void RemoveAccessRuleSpecific(MutexAccessRule rule) { base.RemoveAccessRuleSpecific(rule); } public void AddAuditRule(MutexAuditRule rule) { base.AddAuditRule(rule); } public void SetAuditRule(MutexAuditRule rule) { base.SetAuditRule(rule); } public bool RemoveAuditRule(MutexAuditRule rule) { return base.RemoveAuditRule(rule); } public void RemoveAuditRuleAll(MutexAuditRule rule) { base.RemoveAuditRuleAll(rule); } public void RemoveAuditRuleSpecific(MutexAuditRule rule) { base.RemoveAuditRuleSpecific(rule); } public override Type AccessRightType { get { return typeof(MutexRights); } } public override Type AccessRuleType { get { return typeof(MutexAccessRule); } } public override Type AuditRuleType { get { return typeof(MutexAuditRule); } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- TypeLibConverter.cs
- WindowsSolidBrush.cs
- XmlSchemaAnnotation.cs
- TextBox.cs
- OdbcEnvironment.cs
- DataGridViewSelectedCellCollection.cs
- RegisteredHiddenField.cs
- StatusBarDesigner.cs
- RawStylusInputReport.cs
- ApplicationGesture.cs
- ToolStripComboBox.cs
- SoapProcessingBehavior.cs
- ChangePassword.cs
- XmlReaderSettings.cs
- GradientStop.cs
- DataComponentGenerator.cs
- cryptoapiTransform.cs
- ButtonChrome.cs
- NamedElement.cs
- AuthenticationServiceManager.cs
- UnsafeNativeMethods.cs
- Annotation.cs
- WindowAutomationPeer.cs
- Win32.cs
- TreeViewDataItemAutomationPeer.cs
- ClientBuildManager.cs
- BezierSegment.cs
- XmlQueryStaticData.cs
- StreamGeometry.cs
- FlatButtonAppearance.cs
- IndexedEnumerable.cs
- EntityWrapperFactory.cs
- Quack.cs
- AssemblyUtil.cs
- XPathPatternBuilder.cs
- DataServiceHostWrapper.cs
- ToolboxItem.cs
- CheckBox.cs
- SchemaConstraints.cs
- LocalizationParserHooks.cs
- Component.cs
- RightsManagementEncryptedStream.cs
- ToolboxItemSnapLineBehavior.cs
- TableRow.cs
- _TransmitFileOverlappedAsyncResult.cs
- BypassElementCollection.cs
- ImageSource.cs
- TextElementEditingBehaviorAttribute.cs
- XmlnsPrefixAttribute.cs
- SingleAnimation.cs
- Crypto.cs
- ApplicationSecurityManager.cs
- ListDictionaryInternal.cs
- WebPartConnectionsCancelEventArgs.cs
- NamespaceList.cs
- CodeMemberEvent.cs
- BitmapEffectCollection.cs
- InputScopeAttribute.cs
- InternalException.cs
- SimpleHandlerFactory.cs
- thaishape.cs
- BitmapEffectInput.cs
- ProvidersHelper.cs
- XamlSerializerUtil.cs
- ProcessModelSection.cs
- WebServiceEnumData.cs
- RPIdentityRequirement.cs
- ElementHostAutomationPeer.cs
- HandlerFactoryCache.cs
- FilterElement.cs
- SqlUtil.cs
- RangeExpression.cs
- WmlCalendarAdapter.cs
- MsmqIntegrationMessageProperty.cs
- HotSpotCollection.cs
- ToolStrip.cs
- ToolboxItemCollection.cs
- Label.cs
- FocusWithinProperty.cs
- ISO2022Encoding.cs
- EditorZoneAutoFormat.cs
- RowsCopiedEventArgs.cs
- OracleBinary.cs
- PolygonHotSpot.cs
- ColumnMapVisitor.cs
- UidManager.cs
- ClientUrlResolverWrapper.cs
- FaultPropagationRecord.cs
- ClientConfigPaths.cs
- PropertyIdentifier.cs
- Grammar.cs
- SecurityException.cs
- ProfileService.cs
- ScriptResourceHandler.cs
- EditorPartChrome.cs
- InputBinding.cs
- PolyQuadraticBezierSegmentFigureLogic.cs
- ConfigurationElementCollection.cs
- WorkItem.cs
- WrappedIUnknown.cs