Re: [PATCH] console: fix output for console handles opened with GENERIC_WRITE access

[Eric Pouech]

this has already been discussed on wine-devel a couple of days ago
the "right" fix is either to fix WriteConsole so that it doesn't require
read access (actually FILE_READ_PROPERTIES), or to grant this access user
side
so the fix in the server will be rejected
A+

2010/11/12 Martin Wilck
> Writing to a console handle obtained with a requested access mode
> GENERIC_WRITE
> produces no output. This happens because get_console_mode() requires
> FILE_READ_PROPERTIES access on the handle, which a handle created with
> GENERIC_WRITE doesn't have.
>
> This affects many Microsoft console applications, e.g. nmake and cl from
> VC++
> express 2005.
>
> It can be tested with the following minimal test program (compiled with
> VC 2005 & run with native mscvr80):
>
> int main(void)
> {
>        _cprintf("Hi.\n");
>        return 0;
> }
>
> This behaves as follows:
>
> trace:console:OpenConsoleW (L"CONOUT$", 0x40000000, 0, 3)
> 0009: open_console( from=0001, access=40000000, attributes=00000000,
> share=3 )
> 0009: open_console() = 0 { handle=0028 }
> trace:console:WriteConsoleW 0x2b L"H" 1 0x33fb78 (nil)
> 0009: get_console_mode( handle=0028 )
> 0009: get_console_mode() = ACCESS_DENIED { mode=0, is_bare=0 }
>
> Because of the ACCESS_DENIED, this program produces no output on current
> wine.
> This patch fixies this with a new map_access() function for the console.
> Signed-off-by: Martin Wilck
>
> server/console.c |   10 ++++++++--
>  1 files changed, 8 insertions(+), 2 deletions(-)