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user32: Use a critical section in RegisterUserApiHook.

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Signed-off-by: Jacek Caban <jacek@codeweavers.com>
This commit is contained in:
Jacek Caban 2022-06-07 23:30:46 +02:00 committed by Alexandre Julliard
parent 2a3b4c9bd7
commit 915ac1c197
1 changed files with 12 additions and 2 deletions
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14
dlls/user32/hook.c
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@ -100,6 +100,16 @@ struct hook_info
WCHAR module[MAX_PATH];
};
static CRITICAL_SECTION api_hook_cs;
static CRITICAL_SECTION_DEBUG critsect_debug =
{
0, 0, &api_hook_cs,
{ &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
0, 0, { (DWORD_PTR)(__FILE__ ": api_hook_cs") }
};
static CRITICAL_SECTION api_hook_cs = { &critsect_debug, -1, 0, 0, 0, 0 };
#define WH_WINEVENT (WH_MAXHOOK+1)
static const char * const hook_names[WH_WINEVENT - WH_MINHOOK + 1] =
@ -487,12 +497,12 @@ BOOL WINAPI RegisterUserApiHook(const struct user_api_hook *new_hook, struct use
if (!new_hook)
return FALSE;
USER_Lock();
EnterCriticalSection( &api_hook_cs );
hooked_user_api = *new_hook;
user_api = &hooked_user_api;
if (old_hook)
*old_hook = original_user_api;
USER_Unlock();
LeaveCriticalSection( &api_hook_cs );
return TRUE;
}