[LOG4NET-496] RollingFileAppender.ActivateOptions throws UnauthorizedAccessException

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 1.2.14
• Assignee: Unassigned
• Reporter: Fabian Pachner
• Created: 10/Dec/15 15:04
• Updated: 04/Apr/20 22:28

Description

We upgraded our Azure cloud service project from log4net 1.2.13 to 1.2.14 and received the following exception when the web roles are starting up:

System.UnauthorizedAccessException: Access to the path 'C__Resources_directory_9b9a1e064b78414281c81f861d0634b0.Role.Web.Frontend.DiagnosticStore_LogFiles_UI_UI_0' is denied.
   at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
   at System.Threading.Mutex.MutexTryCodeHelper.MutexTryCode(Object userData)
   at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData)
   at System.Threading.Mutex.CreateMutexWithGuaranteedCleanup(Boolean initiallyOwned, String name, Boolean& createdNew, SECURITY_ATTRIBUTES secAttrs)
   at System.Threading.Mutex..ctor(Boolean initiallyOwned, String name, Boolean& createdNew, MutexSecurity mutexSecurity)
   at System.Threading.Mutex..ctor(Boolean initiallyOwned, String name, Boolean& createdNew)
   at log4net.Appender.RollingFileAppender.ActivateOptions()
   at Base.Logging.AzureFileLogAppender.ActivateOptions() in j:\Source\Commons\Logging\AzureFileLogAppender.cs:line 95
   at log4net.Repository.Hierarchy.XmlHierarchyConfigurator.ParseAppender(XmlElement appenderElement)

This affects the w3wp process of the web role. A consequence of this is that file logging isn't working for that process. We didn't have that exception with log4net 1.2.13 and recognized there was a change in 1.2.14 in RollingFileAppender.ActivateOptions: A mutex is created there and that seems to lead to the mentioned exception.

Can you tell us whether it is likely that this issue was already fixed with 1.2.15? And if so, when will this version be available via Nuget package? Thank you!

Issue Links

• relates to: LOG4NET-587 Mutex ~ Access to the path is denied in log4net.Appender.RollingFileAppender.ActivateOptions()