https://bugzilla.novell.com/show_bug.cgi?id=666225
https://bugzilla.novell.com/show_bug.cgi?id=666225#c0 Summary: System.IO.Directory.GetFiles throws IOException ERROR_NO_MORE_FILES Classification: Mono Product: Mono: Runtime Version: 2.8.x Platform: x86-64 OS/Version: Linux Status: NEW Severity: Normal Priority: P5 - None Component: io-layer AssignedTo: lu...@novell.com ReportedBy: bas...@symform.com QAContact: mono-bugs@lists.ximian.com Found By: --- Blocker: --- User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.13) Gecko/20101203 Firefox/3.6.13 ( .NET CLR 3.5.30729; .NET4.0E) There seems to be a race condition where if a file is enumerated in System.IO.GetFiles and then immediately deleted, an IOException is thrown as follows: System.IO.IOException : Win32 IO returned ERROR_NO_MORE_FILES. Path: /tmp at System.IO.Directory.GetFileSystemEntries (System.String path, System.String searchPattern, FileAttributes mask, FileAttributes attrs) [0x00000] in <filename unknown>:0 at System.IO.Directory.GetFiles (System.String path, System.String searchPattern) [0x00000] in <filename unknown>:0 Looking at FindFirstFile in mono/io-layer/io.c: if (handle != INVALID_HANDLE_VALUE && !FindNextFile (handle, find_data)) { FindClose (handle); SetLastError (ERROR_NO_MORE_FILES); handle = INVALID_HANDLE_VALUE; } So it looks like if a file is enumerated but disappears, FindFirstFile sets the last error to ERROR_NO_MORE_FILES. The wrapper code in mono/metadata/file-io.c in ves_icall_System_IO_MonoIO_GetFileSystemEntries, checks for ERROR_FILE_NOT_FOUND and returns an empty array. It does not however check for ERROR_NO_MORE_FILES. One suggestion is to check for ERROR_NO_MORE_FILES in ves_icall_System_IO_MonoIO_GetFileSystemEntries and return an empty array. Reproducible: Always Steps to Reproduce: 1. 2. 3. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the QA contact for the bug. _______________________________________________ mono-bugs maillist - mono-bugs@lists.ximian.com http://lists.ximian.com/mailman/listinfo/mono-bugs
