src/Agent.Windows/Security/UserOnlyDirectory.cs


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

namespace Agent.Windows.Security;

public static class UserOnlyDirectory
{
    public static void Ensure(string path)
    {
        Directory.CreateDirectory(path);
        using WindowsIdentity identity = WindowsIdentity.GetCurrent();
        SecurityIdentifier user = identity.User ?? throw new InvalidOperationException("Current Windows identity has no user SID.");
        var security = new DirectorySecurity();
        security.SetOwner(user);
        security.SetAccessRuleProtection(isProtected: true, preserveInheritance: false);
        security.AddAccessRule(new FileSystemAccessRule(user, FileSystemRights.FullControl,
            InheritanceFlags.ContainerInherit | InheritanceFlags.ObjectInherit, PropagationFlags.None, AccessControlType.Allow));
        FileSystemAclExtensions.SetAccessControl(new DirectoryInfo(path), security);
    }
}