[Bug 14360] New: dosmem forgot MAP_FIXED

http://bugs.winehq.org/show_bug.cgi?id=14360

Summary: dosmem forgot MAP_FIXED
           Product: Wine
           Version: 1.0.0
          Platform: PC
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P2
         Component: kernel32
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

Created an attachment (id=14657)
 --> (http://bugs.winehq.org/attachment.cgi?id=14657)
dosmem use MAP_FIXED; new WINE_NO_DOSMEM_64KB environment variable

Dosmem forgot MAP_FIXED when calling wine_anon_mmap() to allocate memory at
assumed fixed addresses for the low 1 MiB and 64 KiB.  It is a bug to assume
that the result address equals the requested address, unless MAP_FIXED.  Also,
add a new environment variable WINE_NO_DOSMEM_64KB to inhibit the low 64 KiB,
even if the opreating system would allow it.  By default, Linux 2.6.24
prohibits mmap in the range [0, 0x10000).  Patch is attached and will be sent
to [e-mail].

[Bug 14360] dosmem forgot MAP_FIXED

http://bugs.winehq.org/show_bug.cgi?id=14360

Austin English  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |patch

--- Comment #1 from Austin English   2009-01-05 11:12:06 ---
Is this still an issue in current (1.1.12 or newer) wine? Would you mind
resubmitting the patch and asking for comments?

[Bug 14360] dosmem forgot MAP_FIXED

http://bugs.winehq.org/show_bug.cgi?id=14360

--- Comment #2 from Austin English   2009-07-16 13:10:17 ---
This area has changed a lot recently, might be worth taking another
look/re-valgrinding.

[Bug 14360] dosmem forgot MAP_FIXED

http://bugs.winehq.org/show_bug.cgi?id=14360

Austin English  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |[e-mail]

[Bug 14360] dosmem forgot MAP_FIXED

http://bugs.winehq.org/show_bug.cgi?id=14360

Alexandre Julliard  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |INVALID

--- Comment #3 from Alexandre Julliard   2010-05-19 16:39:50 ---
It's not supposed to use MAP_FIXED, we don't know what's in there, and in fact
getting a different address is OK. There's nothing to fix here.

[Bug 14360] dosmem forgot MAP_FIXED

http://bugs.winehq.org/show_bug.cgi?id=14360

Austin English  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |CLOSED

--- Comment #4 from Austin English   2010-05-19 16:55:31 ---
Closing.