Paul Gofman : ntdll: Return STATUS_PENDING from NtReadFile() for async read in case of EOF.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: b0d3b5b69cf0be469a94a7330285a82f534ca3f1
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=b0d3b5b69cf0be469a94a7330285a82f534ca3f1

Author: Paul Gofman <pgofman at codeweavers.com>
Date:   Mon Apr 20 02:06:00 2020 +0300

ntdll: Return STATUS_PENDING from NtReadFile() for async read in case of EOF.

Fixes crashes in "Planet Zoo" during character or game save.

Signed-off-by: Paul Gofman <pgofman at codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 dlls/ntdll/file.c       | 6 +++---
 dlls/ntdll/tests/file.c | 6 ++++--
 2 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/dlls/ntdll/file.c b/dlls/ntdll/file.c
index a9770290e0..9997a5e1cd 100644
--- a/dlls/ntdll/file.c
+++ b/dlls/ntdll/file.c
@@ -1018,13 +1018,13 @@ done:
 
 err:
     if (needs_close) close( unix_handle );
-    if (status == STATUS_SUCCESS || (status == STATUS_END_OF_FILE && !async_read))
+    if (status == STATUS_SUCCESS || (status == STATUS_END_OF_FILE && (!async_read || type == FD_TYPE_FILE)))
     {
         io_status->u.Status = status;
         io_status->Information = total;
         TRACE("= SUCCESS (%u)\n", total);
         if (hEvent) NtSetEvent( hEvent, NULL );
-        if (apc && !status) NtQueueApcThread( GetCurrentThread(), (PNTAPCFUNC)apc,
+        if (apc && (!status || async_read)) NtQueueApcThread( GetCurrentThread(), (PNTAPCFUNC)apc,
                                               (ULONG_PTR)apc_user, (ULONG_PTR)io_status, 0 );
     }
     else
@@ -1033,7 +1033,7 @@ err:
         if (status != STATUS_PENDING && hEvent) NtResetEvent( hEvent, NULL );
     }
 
-    ret_status = async_read && type == FD_TYPE_FILE && status == STATUS_SUCCESS
+    ret_status = async_read && type == FD_TYPE_FILE && (status == STATUS_SUCCESS || status == STATUS_END_OF_FILE)
             ? STATUS_PENDING : status;
 
     if (send_completion) NTDLL_AddCompletion( hFile, cvalue, status, total, ret_status == STATUS_PENDING );
diff --git a/dlls/ntdll/tests/file.c b/dlls/ntdll/tests/file.c
index 68c6a79e79..31c18454f0 100644
--- a/dlls/ntdll/tests/file.c
+++ b/dlls/ntdll/tests/file.c
@@ -652,7 +652,8 @@ static void read_file_test(void)
     iosb.Information = 0xdeadbeef;
     offset.QuadPart = strlen(text) + 2;
     status = pNtReadFile( handle, event, apc, &apc_count, &iosb, buffer, 2, &offset, NULL );
-    ok(status == STATUS_PENDING || status == STATUS_END_OF_FILE /* before Vista */, "expected STATUS_PENDING or STATUS_END_OF_FILE, got %#x\n", status);
+    ok(status == STATUS_PENDING || broken(status == STATUS_END_OF_FILE) /* before Vista */,
+            "expected STATUS_PENDING, got %#x\n", status);
     if (status == STATUS_PENDING)  /* vista */
     {
         WaitForSingleObject( event, 1000 );
@@ -4540,7 +4541,8 @@ static void test_read_write(void)
     ret = ReadFile(hfile, buf, sizeof(buf), &bytes, &ovl);
     ok(!ret, "ReadFile should fail\n");
     ret = GetLastError();
-    ok(ret == ERROR_IO_PENDING || ret == ERROR_HANDLE_EOF /* before Vista */, "expected ERROR_IO_PENDING or ERROR_HANDLE_EOF, got %d\n", ret);
+    ok(ret == ERROR_IO_PENDING || broken(ret == ERROR_HANDLE_EOF) /* before Vista */,
+            "expected ERROR_IO_PENDING, got %d\n", ret);
     ok(bytes == 0, "bytes %u\n", bytes);
 
     off = SetFilePointer(hfile, 0, NULL, FILE_CURRENT);