* Add support for Windows 8, first step
@ 2011-10-11 19:39 Teemu Nätkinniemi
2011-10-12 8:27 ` Corinna Vinschen
0 siblings, 1 reply; 3+ messages in thread
From: Teemu Nätkinniemi @ 2011-10-11 19:39 UTC (permalink / raw)
To: cygwin-patches
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Hello!
Here's a small patch that enables Cygwin to run on Windows 8 (tested on
x64 build 8102, the Windows Developer Preview). Windows 8 does not seem
to support FAST_CWD or the current implementation of FAST_CWD is not
compatible with Windows 8 so it is disabled at the moment.
Teemu Nätkinniemi
[-- Attachment #2: wincap_win8.patch --]
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2011-10-11 Teemu Nätkinniemi <tnatkinn@gmail.com>
* wincap.cc (wincap_8): Add support to Windows 8
(wincapc::init): Ditto
--- wincap.cc.orig 2011-07-30 23:51:03.000000000 +0300
+++ wincap.cc 2011-10-11 22:13:44.556795800 +0300
@@ -263,6 +263,36 @@
has_stack_size_param_is_a_reservation:true,
};
+wincaps wincap_8 __attribute__((section (".cygwin_dll_common"), shared)) = {
+ max_sys_priv:SE_CREATE_SYMBOLIC_LINK_PRIVILEGE,
+ is_server:false,
+ has_physical_mem_access:false,
+ has_create_global_privilege:true,
+ has_ioctl_storage_get_media_types_ex:true,
+ has_disk_ex_ioctls:true,
+ has_buggy_restart_scan:false,
+ has_mandatory_integrity_control:true,
+ needs_logon_sid_in_sid_list:false,
+ needs_count_in_si_lpres2:false,
+ has_recycle_dot_bin:true,
+ has_gaa_prefixes:true,
+ has_gaa_on_link_prefix:true,
+ supports_all_posix_ai_flags:true,
+ has_restricted_stack_args:false,
+ has_transactions:true,
+ has_recvmsg:true,
+ has_sendmsg:true,
+ has_broken_udf:false,
+ has_console_handle_problem:true,
+ has_broken_alloc_console:true,
+ has_always_all_codepages:true,
+ has_localenames:true,
+ has_fast_cwd:false,
+ has_restricted_raw_disk_access:true,
+ use_dont_resolve_hack:false,
+ has_stack_size_param_is_a_reservation:true,
+};
+
wincapc wincap __attribute__((section (".cygwin_dll_common"), shared));
void
@@ -320,9 +350,12 @@
case 0:
caps = &wincap_vista;
break;
- default:
+ case 1:
caps = &wincap_7;
break;
+ default:
+ caps = &wincap_8;
+ break;
}
break;
default:
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Add support for Windows 8, first step
2011-10-11 19:39 Add support for Windows 8, first step Teemu Nätkinniemi
@ 2011-10-12 8:27 ` Corinna Vinschen
2011-10-12 20:45 ` Teemu Nätkinniemi
0 siblings, 1 reply; 3+ messages in thread
From: Corinna Vinschen @ 2011-10-12 8:27 UTC (permalink / raw)
To: cygwin-patches
Hi Teemu,
First of all, we need a copyright assignment from you before we can
accept non-trivial patches to Cygwin, see http://cygwin.com/contrib.html,
the "Before you get started" section.
On Oct 11 22:38, Teemu Nätkinniemi wrote:
> Hello!
>
> Here's a small patch that enables Cygwin to run on Windows 8 (tested
> on x64 build 8102, the Windows Developer Preview). Windows 8 does
> not seem to support FAST_CWD or the current implementation of
> FAST_CWD is not compatible with Windows 8 so it is disabled at the
> moment.
Windows 8 will very likely support the FAST_CWD stuff, the problem is
just to find out how to find the global pointer pointing to the current
FAST_CWD structure, and then, if the FAST_CWD structure changed.
Having this annoying message at startup was intentional, so that we
know that there's some work to do yet. However, personally I don't plan
to look into W8 so soon. Stuff like that is bound to change this early
in the release game anyway.
Therefore I don't want to disable this message. If you're interested
to get rid of it, it would be most helpful trying to track down how to
find the global FAST_CWD pointer in W8.
Corinna
--
Corinna Vinschen Please, send mails regarding Cygwin to
Cygwin Project Co-Leader cygwin AT cygwin DOT com
Red Hat
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Add support for Windows 8, first step
2011-10-12 8:27 ` Corinna Vinschen
@ 2011-10-12 20:45 ` Teemu Nätkinniemi
0 siblings, 0 replies; 3+ messages in thread
From: Teemu Nätkinniemi @ 2011-10-12 20:45 UTC (permalink / raw)
To: cygwin-patches
Hello Corinna,
On 12.10.2011 11:26, Corinna Vinschen wrote:
> First of all, we need a copyright assignment from you before we can
> accept non-trivial patches to Cygwin, see http://cygwin.com/contrib.html,
> the "Before you get started" section.
I am going to do that just in case I actually get something working (see
below).
> Windows 8 will very likely support the FAST_CWD stuff, the problem is
> just to find out how to find the global pointer pointing to the current
> FAST_CWD structure, and then, if the FAST_CWD structure changed.
It does do that, the code looks almost the same as in Windows 7. There
are some differences that I haven't figured out yet. But I might
actually wait for a beta version of Windows 8 before going forward.
> Therefore I don't want to disable this message. If you're interested
> to get rid of it, it would be most helpful trying to track down how to
> find the global FAST_CWD pointer in W8.
If I understood the code correctly f_cwd_ptr is the location of
ntdll!RtlpCurDirRef and find_fast_cwd_pointer tries to find that
location. For some reason I couldn't get breakpoints working when
debugging cygwin1.dll so I did some disassembling and found the correct
location for ntdll!RtlpCurDirRef in Windows 8 version of ntdll (wow64).
Any hints for debugging the Cygwin dll itself as find_fast_cwd runs once
per session so it has been very difficult trying to get a working
breakpoint.
Teemu
^ permalink raw reply [flat|nested] 3+ messages in thread
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2011-10-11 19:39 Add support for Windows 8, first step Teemu Nätkinniemi
2011-10-12 8:27 ` Corinna Vinschen
2011-10-12 20:45 ` Teemu Nätkinniemi
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