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tst: ntptfs: NtQueryDirectoryFile workaround comment

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This commit is contained in:
Bill Zissimopoulos
2022-01-26 09:18:16 +00:00
parent f7ba091364
commit 172056b51e
1 changed files with 10 additions and 4 deletions
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14
tst/ntptfs/ptfs.c
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@@ -162,8 +162,11 @@ static NTSTATUS CreateEx(FSP_FILE_SYSTEM *FileSystem,
/* WORKAROUND:
*
* WOW64 appears to have a bug in some versions of the OS, where NtQueryDirectoryFile may fail
* if called on a directory that has been opened without FILE_SYNCHRONOUS_IO_NONALERT.
* WOW64 appears to have a bug in some versions of the OS (seen on Win10 1909 and
* Server 2012 R2), where NtQueryDirectoryFile may produce garbage if called on a
* directory that has been opened without FILE_SYNCHRONOUS_IO_NONALERT. (Garbage:
* after a STATUS_PENDING has been waited, Iosb.Information reports bytes transferred
* but the buffer does not get filled).
*
* So make sure to always open directories in a synchronous manner.
*/
@@ -273,8 +276,11 @@ static NTSTATUS Open(FSP_FILE_SYSTEM *FileSystem,
/* WORKAROUND:
*
* WOW64 appears to have a bug in some versions of the OS, where NtQueryDirectoryFile may fail
* if called on a directory that has been opened without FILE_SYNCHRONOUS_IO_NONALERT.
* WOW64 appears to have a bug in some versions of the OS (seen on Win10 1909 and
* Server 2012 R2), where NtQueryDirectoryFile may produce garbage if called on a
* directory that has been opened without FILE_SYNCHRONOUS_IO_NONALERT. (Garbage:
* after a STATUS_PENDING has been waited, Iosb.Information reports bytes transferred
* but the buffer does not get filled).
*
* So make sure to always open directories in a synchronous manner.
*/