[Bug 40225] New: NtQuerySection returns wrong size

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=40225

            Bug ID: 40225
           Summary: NtQuerySection returns wrong size
           Product: Wine
           Version: 1.9.3
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: ntdll
          Assignee: wine-bugs at winehq.org
          Reporter: mail at georg.so
      Distribution: ---

Created attachment 53743
  --> https://bugs.winehq.org/attachment.cgi?id=53743
NtQuerySection test case via boost interprocess

When using NtQuerySection to get the file size of a file mapping the wine
result deviates from the native one.

With wine, it seems that the size is rounded up to the next page. On native
windows, the real file size is returned.

How to reproduce (e.g. with a mingw cross compile environment):

mkdir build
cd build
mingw64-cmake ..
mingw64-make
wine64 main

Actual behavior:

fixme:winediag:start_process Wine Staging 1.9.3 is a testing version containing
experimental patches.
fixme:winediag:start_process Please mention your exact version when filing bug
reports on winehq.org.
region.get_size() == 4096
sizeof(inp)-1 == 5
Assertion failed!

Program: Z:\home\gms\program\libixxxutil\build-case-win-rel\main.exe
File: /home/gms/program/libixxxutil/test/mapped_size_case/main.cc, Line 28

Expression: region.get_size() == sizeof(inp)-1

abnormal program termination

Expected behavior (as e.g. on Windows 7):

No output and success exit code.

How reproducible:
always

The test program uses Boost Interprocess functions for creating that mapping
and getting the size.

See also:

cf.
http://www.boost.org/doc/libs/1_60_0/doc/html/boost/interprocess/mapped_region.html
> The OS could allocate more pages than size/page_size(), but get_address() will always return the address passed in this function (if not null) and get_size() will return the specified size. 

http://stackoverflow.com/a/26983182/427158
 -> NtQuerySection

-- 
Do not reply to this email, post in Bugzilla using the
above URL to reply.
You are receiving this mail because:
You are watching all bug changes.