System.Threading.AccessControl 9.0.0-rc.1.24431.7

About

System.Threading.AccessControl provides types that enable you to control access to threading synchronization primitives. This includes the ability to control access to Mutexes, Semaphores, and Events using Windows Access Control Lists (ACLs).

Key Features

  • Extension methods to allow ACL modifications on Mutex, Semaphore, and EventWaitHandle.
  • Simplified security management for threading synchronization objects.

How to Use

using System.Security.AccessControl;
using System.Security.Principal;

// Create a string representing the current user.
string user = $"{Environment.UserDomainName}\\{Environment.UserName}";

// Create a security object that grants no access
MutexSecurity mutexSecurity = new MutexSecurity();

// Add a rule that grants the current user the right to enter or release the mutex
MutexAccessRule rule = new MutexAccessRule(user, MutexRights.Synchronize | MutexRights.Modify, AccessControlType.Allow);
mutexSecurity.AddAccessRule(rule);

// Add a rule that denies the current user the right to change permissions on the mutex
rule = new MutexAccessRule(user, MutexRights.ChangePermissions, AccessControlType.Deny);
mutexSecurity.AddAccessRule(rule);

// Display the rules in the security object
ShowSecurity(mutexSecurity);

// Add a rule that allows the current user the right to read permissions on the mutex
// This rule is merged with the existing Allow rule
rule = new MutexAccessRule(user, MutexRights.ReadPermissions, AccessControlType.Allow);
mutexSecurity.AddAccessRule(rule);

// Display the rules in the security object
ShowSecurity(mutexSecurity);

static void ShowSecurity(MutexSecurity security)
{
    Console.WriteLine("\nCurrent access rules:\n");

    foreach (MutexAccessRule ar in security.GetAccessRules(true, true, typeof(NTAccount)))
    {
        Console.WriteLine($"   User: {ar.IdentityReference}");
        Console.WriteLine($"   Type: {ar.AccessControlType}");
        Console.WriteLine($" Rights: {ar.MutexRights}");
        Console.WriteLine();
    }
}

/*
 * This code example produces output similar to following:
 * 
 * Current access rules:
 * 
 *    User: TestDomain\TestUser
 *    Type: Deny
 *  Rights: ChangePermissions
 * 
 *    User: TestDomain\TestUser
 *    Type: Allow
 *  Rights: Modify, Synchronize
 * 
 * 
 * Current access rules:
 * 
 *    User: TestDomain\TestUser
 *    Type: Deny
 *  Rights: ChangePermissions
 * 
 *    User: TestDomain\TestUser
 *    Type: Allow
 *  Rights: Modify, ReadPermissions, Synchronize
 */

Main Types

The main types provided by this library are:

  • System.Threading.EventWaitHandleAcl
  • System.Threading.MutexAcl
  • System.Threading.SemaphoreAcl
  • System.Threading.ThreadingAclExtensions

Additional Documentation

Feedback & Contributing

System.Threading.AccessControl is released as open source under the MIT license. Bug reports and contributions are welcome at the GitHub repository.

Showing the top 20 packages that depend on System.Threading.AccessControl.

Packages Downloads
System.Diagnostics.EventLog
Provides the System.Diagnostics.EventLog class, which allows the applications to use the windows event log service. Commonly Used Types: System.Diagnostics.EventLog 00490982c7952e96a1089818467caa6fd07541b2 When using NuGet 3.x this package requires at least version 3.4.
43
System.Diagnostics.EventLog
Provides the System.Diagnostics.EventLog class, which allows the applications to use the windows event log service. Commonly Used Types: System.Diagnostics.EventLog 7e3dbdb95b30650eabade0ac73a10b22d4dbe8b3 When using NuGet 3.x this package requires at least version 3.4.
41
System.Diagnostics.EventLog
Provides the System.Diagnostics.EventLog class, which allows the applications to use the windows event log service. Commonly Used Types: System.Diagnostics.EventLog 10dc31ea70c14a33f371cea5a757a3d95b218acf When using NuGet 3.x this package requires at least version 3.4.
39
System.Diagnostics.EventLog
Provides the System.Diagnostics.EventLog class, which allows the applications to use the windows event log service. Commonly Used Types: System.Diagnostics.EventLog When using NuGet 3.x this package requires at least version 3.4.
37
System.Diagnostics.EventLog
Provides the System.Diagnostics.EventLog class, which allows the applications to use the windows event log service. Commonly Used Types: System.Diagnostics.EventLog 8f968b9e79c5721d78cc88e46fe57457fe9d490d When using NuGet 3.x this package requires at least version 3.4.
36
System.Diagnostics.EventLog
Provides the System.Diagnostics.EventLog class, which allows the applications to use the windows event log service. Commonly Used Types: System.Diagnostics.EventLog 30ab651fcb4354552bd4891619a0bdd81e0ebdbf When using NuGet 3.x this package requires at least version 3.4.
31

.NET Framework 4.6.2

.NET 8.0

  • No dependencies.

.NET 9.0

  • No dependencies.

.NET Standard 2.0

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