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Fix EIO error accessing certain (OS X SMB?) drives 

* path.cc (symlink_info::check_reparse_point): Don't generate an EIO
	error if NtFsControlFile returns STATUS_NOT_A_REPARSE_POINT.

Signed-off-by: Corinna Vinschen <corinna@vinschen.de>
This commit is contained in:
Corinna Vinschen 2015-10-21 12:01:11 +02:00
parent 215dbf05fe
commit 713161b28b
3 changed files with 15 additions and 1 deletions
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5
winsup/cygwin/ChangeLog
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@ -1,3 +1,8 @@
2015-10-21 Corinna Vinschen <corinna@vinschen.de>
* path.cc (symlink_info::check_reparse_point): Don't generate an EIO
error if NtFsControlFile returns STATUS_NOT_A_REPARSE_POINT.
2015-09-23 Evgeny Grin <k2k@yandex.ru>
* fhandler_socket.cc (fhandler_socket::wait_for_events): Fix compiler

8
winsup/cygwin/path.cc
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@ -2289,7 +2289,13 @@ symlink_info::check_reparse_point (HANDLE h, bool remote)
{
debug_printf ("NtFsControlFile(FSCTL_GET_REPARSE_POINT) failed, %y",
status);
set_error (EIO);
/* When accessing the root dir of some remote drives (observed with
OS X shares), the FILE_ATTRIBUTE_REPARSE_POINT flag is set, but
the followup call to NtFsControlFile(FSCTL_GET_REPARSE_POINT)
returns with STATUS_NOT_A_REPARSE_POINT. That's quite buggy, but
we cope here with this scenario by not setting an error code. */
if (status != STATUS_NOT_A_REPARSE_POINT)
set_error (EIO);
return 0;
}
if (rp->ReparseTag == IO_REPARSE_TAG_SYMLINK)

3
winsup/cygwin/release/2.3.0
View File

@ -36,3 +36,6 @@ Bug Fixes
- Fix a potential crash in advisory file locking due to usage of stack space
out of scope.
Addresses: https://cygwin.com/ml/cygwin/2015-09/msg00079.html
- Fix EIO error accessing certain (OS X SMB?) drives
Addresses: https://cygwin.com/ml/cygwin/2015-09/msg00229.html