[PATCH] kernel32: Fix regression in CancelIoEx error code
Keno Fischer
keno at juliacomputing.com
Wed Dec 22 06:26:23 CST 2021
In commit 27ecc6ba5 ("ntdll: Fix iosb handling in NtCancelIoFile()"),
NtCancelIoFile(Ex) was updated to return its status rather than
unconditionally setting it in io_status->u.Status (though the write
was retained in the success case). As a result, in the error case,
the kernelbase wrappers now interpret unitialized memory as an error
code, since io_status->u.Status is never written. Fix that by using
the return status instead and add an appropriate test that covers
this case.
Issue Reference: https://github.com/JuliaLang/julia/issues/43490
Signed-Off-By: Keno Fischer <keno at juliacomputing.com>
---
dlls/kernel32/tests/pipe.c | 12 ++++++++++++
dlls/kernelbase/file.c | 6 ++----
2 files changed, 14 insertions(+), 4 deletions(-)
diff --git a/dlls/kernel32/tests/pipe.c b/dlls/kernel32/tests/pipe.c
index 5af92f8f8a5..f73ef627c67 100644
--- a/dlls/kernel32/tests/pipe.c
+++ b/dlls/kernel32/tests/pipe.c
@@ -2941,6 +2941,7 @@ static void test_blocking_rw(HANDLE writer, HANDLE reader, DWORD buf_size, BOOL
OVERLAPPED read_overlapped, read_overlapped2, write_overlapped, write_overlapped2;
char buf[10000], read_buf[10000];
HANDLE flush_thread;
+ BOOL res;
memset(buf, 0xaa, sizeof(buf));
@@ -3074,6 +3075,17 @@ static void test_blocking_rw(HANDLE writer, HANDLE reader, DWORD buf_size, BOOL
overlapped_write_sync(writer, buf, 1);
test_overlapped_result(reader, &read_overlapped, 1, FALSE);
+ /* Test that canceling the same operation twice gives a sensible error */
+ SetLastError(0xdeadbeef);
+ overlapped_read_async(reader, read_buf, 1, &read_overlapped2);
+ res = pCancelIoEx(reader, &read_overlapped2);
+ ok(res, "CancelIoEx failed with error %d\n", GetLastError());
+ res = pCancelIoEx(reader, &read_overlapped2);
+ ok(!res, "CancelIOEx succeeded unexpectedly");
+ ok(GetLastError() == ERROR_NOT_FOUND,
+ "In CancelIoEx failure, expected ERROR_NOT_FOUND, got %d\n", GetLastError());
+ test_overlapped_failure(reader, &read_overlapped2, ERROR_OPERATION_ABORTED);
+
/* make two async writes, cancel the first one and make sure that we read from the second one */
overlapped_write_async(writer, buf, buf_size+2000, &write_overlapped);
overlapped_write_async(writer, buf, 1, &write_overlapped2);
diff --git a/dlls/kernelbase/file.c b/dlls/kernelbase/file.c
index 5c7b649d805..576e03eb62b 100644
--- a/dlls/kernelbase/file.c
+++ b/dlls/kernelbase/file.c
@@ -2872,8 +2872,7 @@ BOOL WINAPI DECLSPEC_HOTPATCH CancelIo( HANDLE handle )
{
IO_STATUS_BLOCK io;
- NtCancelIoFile( handle, &io );
- return set_ntstatus( io.u.Status );
+ return set_ntstatus( NtCancelIoFile( handle, &io ) );
}
@@ -2884,8 +2883,7 @@ BOOL WINAPI DECLSPEC_HOTPATCH CancelIoEx( HANDLE handle, LPOVERLAPPED overlapped
{
IO_STATUS_BLOCK io;
- NtCancelIoFileEx( handle, (PIO_STATUS_BLOCK)overlapped, &io );
- return set_ntstatus( io.u.Status );
+ return set_ntstatus( NtCancelIoFileEx( handle, (PIO_STATUS_BLOCK)overlapped, &io ) );
}
--
2.25.1
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