Code:
/ FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / 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); } } } }
Link Menu

This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- COM2PropertyDescriptor.cs
- DefaultTextStore.cs
- BuildResult.cs
- InputProcessorProfilesLoader.cs
- AttachedPropertyBrowsableAttribute.cs
- FigureParaClient.cs
- FileLoadException.cs
- CrossSiteScriptingValidation.cs
- SingleAnimationUsingKeyFrames.cs
- XpsFilter.cs
- BasicKeyConstraint.cs
- xsdvalidator.cs
- RequestCacheManager.cs
- XmlElementCollection.cs
- MsmqChannelFactory.cs
- WebPartAuthorizationEventArgs.cs
- EntityDataSourceReferenceGroup.cs
- ConfigUtil.cs
- RegexRunner.cs
- TextParagraphCache.cs
- WebPartConnectionsConnectVerb.cs
- _BasicClient.cs
- GroupItemAutomationPeer.cs
- SecureUICommand.cs
- ScriptingWebServicesSectionGroup.cs
- TextRange.cs
- LinqExpressionNormalizer.cs
- QueryProcessor.cs
- ExceptionNotification.cs
- DeviceFiltersSection.cs
- IncrementalReadDecoders.cs
- DisplayInformation.cs
- DefaultPrintController.cs
- ClockGroup.cs
- HelpProvider.cs
- COSERVERINFO.cs
- webeventbuffer.cs
- ApplicationSecurityInfo.cs
- XsltException.cs
- DuplicateWaitObjectException.cs
- DataGridViewRowCollection.cs
- XsdValidatingReader.cs
- VerificationAttribute.cs
- StatusBarAutomationPeer.cs
- SpAudioStreamWrapper.cs
- Region.cs
- JsonSerializer.cs
- XmlQueryOutput.cs
- BeginEvent.cs
- ByteArrayHelperWithString.cs
- RMEnrollmentPage3.cs
- CellCreator.cs
- ColumnResult.cs
- HtmlButton.cs
- ActivationArguments.cs
- DBSqlParserColumn.cs
- Stylesheet.cs
- _UriTypeConverter.cs
- DateTimeOffsetStorage.cs
- WebResponse.cs
- LogEntry.cs
- printdlgexmarshaler.cs
- ArgumentNullException.cs
- PolicyException.cs
- SerializationObjectManager.cs
- Events.cs
- XmlElementAttribute.cs
- ExpressionEvaluator.cs
- Zone.cs
- Button.cs
- DataContractAttribute.cs
- FixedPageStructure.cs
- UntrustedRecipientException.cs
- InvokeGenerator.cs
- ProviderConnectionPoint.cs
- ItemMap.cs
- NodeInfo.cs
- BindingGroup.cs
- SHA1CryptoServiceProvider.cs
- SafeFileMapViewHandle.cs
- PointLightBase.cs
- XPathExpr.cs
- ConfigurationCollectionAttribute.cs
- VerificationAttribute.cs
- ListControlDesigner.cs
- StylusPlugin.cs
- SR.cs
- ListViewInsertionMark.cs
- XmlCharacterData.cs
- CallSiteHelpers.cs
- SqlBulkCopy.cs
- codemethodreferenceexpression.cs
- ProfileSection.cs
- RNGCryptoServiceProvider.cs
- DragEventArgs.cs
- TextEffect.cs
- SendDesigner.xaml.cs
- NegotiateStream.cs
- XmlResolver.cs
- ParameterCollection.cs