thirdparty/scummvm
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PLUGINS: Additional plugin check for the ELF loader.

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The ELF loader does not have access to the symbols of the main
executable, it just relocates symbols to it via fixed offsets. We need
to make sure that loaded plugins are from the same link process to
prevent crashes. An embedded build date is used for that.

svn-id: r52730
This commit is contained in:
Andre Heider 2010-09-15 07:44:08 +00:00
parent 76ca653972
commit 2596143e2b
9 changed files with 98 additions and 1 deletions
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9
base/plugins.h
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@ -30,6 +30,7 @@
#include "common/error.h"
#include "common/singleton.h"
#include "common/util.h"
#include "backends/plugins/elf/version.h"
namespace Common {
class FSList;
@ -98,6 +99,13 @@ extern int pluginTypeVersions[PLUGIN_TYPE_MAX];
#define PLUGIN_DYNAMIC_DSO_HANDLE
#endif
#ifdef USE_ELF_LOADER
#define PLUGIN_DYNAMIC_BUILD_DATE \
PLUGIN_EXPORT const char *PLUGIN_getBuildDate() { return gScummVMPluginBuildDate; }
#else
#define PLUGIN_DYNAMIC_BUILD_DATE
#endif
/**
* REGISTER_PLUGIN_STATIC is a convenience macro which is used to declare
* the plugin interface for static plugins. Code (such as game engines)
@ -128,6 +136,7 @@ extern int pluginTypeVersions[PLUGIN_TYPE_MAX];
#define REGISTER_PLUGIN_DYNAMIC(ID,TYPE,PLUGINCLASS) \
extern "C" { \
PLUGIN_DYNAMIC_DSO_HANDLE \
PLUGIN_DYNAMIC_BUILD_DATE \
PLUGIN_EXPORT int32 PLUGIN_getVersion() { return PLUGIN_VERSION; } \
PLUGIN_EXPORT int32 PLUGIN_getType() { return TYPE; } \
PLUGIN_EXPORT int32 PLUGIN_getTypeVersion() { return TYPE##_VERSION; } \