From e438eb91804abec5765e81631204d0fbc3feb68a Mon Sep 17 00:00:00 2001 From: duda Date: Wed, 20 Jun 2001 07:44:33 +0000 Subject: [PATCH] * fhandler.cc (fhandler_base::open): Work around windows bug when CreateFile() with dwDesiredAccess == 0 called on remote share returns valid handle even if file doesn't exist. --- winsup/cygwin/ChangeLog | 6 ++++++ winsup/cygwin/fhandler.cc | 11 +++++++++++ 2 files changed, 17 insertions(+) diff --git a/winsup/cygwin/ChangeLog b/winsup/cygwin/ChangeLog index 47a4c60c05..86341e03b3 100644 --- a/winsup/cygwin/ChangeLog +++ b/winsup/cygwin/ChangeLog @@ -1,3 +1,9 @@ +2001-06-30 Egor Duda + + * fhandler.cc (fhandler_base::open): Work around windows bug when + CreateFile() with dwDesiredAccess == 0 called on remote share returns + valid handle even if file doesn't exist. + 2001-06-20 Egor Duda * fhandler_socket.cc (fhandler_socket::signal_secret_event): New diff --git a/winsup/cygwin/fhandler.cc b/winsup/cygwin/fhandler.cc index a07bc85ab7..6c745c0972 100644 --- a/winsup/cygwin/fhandler.cc +++ b/winsup/cygwin/fhandler.cc @@ -370,6 +370,17 @@ fhandler_base::open (int flags, mode_t mode) if (get_device () == FH_SERIAL) file_attributes |= FILE_FLAG_OVERLAPPED; + /* CreateFile() with dwDesiredAccess == 0 when called on remote + share returns some handle, even if file doesn't exist. This code + works around this bug. */ + if (get_query_open () && + isremote () && + creation_distribution == OPEN_EXISTING && + GetFileAttributes (get_win32_name ()) == (DWORD) -1) + { + set_errno (ENOENT); + goto done; + } x = CreateFileA (get_win32_name (), access, shared, &sec_none, creation_distribution, file_attributes, -- 2.11.0