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8168797: do not load any archived classes from a patched module

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Add new runtime shared class visibility check to ensure shared classes from patched module are not loaded at runtime.

Reviewed-by: acorn, ccheung, hseigel, iklam, lfoltan
This commit is contained in:
Jiangli Zhou 2016-12-19 13:54:33 -05:00
parent a601028e0f
commit bae7bbd382
9 changed files with 31 additions and 210 deletions
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8
hotspot/src/share/vm/classfile/classLoader.hpp
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@ -69,7 +69,6 @@ public:
// Attempt to locate file_name through this class path entry.
// Returns a class file parsing stream if successfull.
virtual ClassFileStream* open_stream(const char* name, TRAPS) = 0;
virtual bool stream_exists(const char* name) = 0;
// Debugging
NOT_PRODUCT(virtual void compile_the_world(Handle loader, TRAPS) = 0;)
};
@ -84,7 +83,6 @@ class ClassPathDirEntry: public ClassPathEntry {
JImageFile* jimage() const { return NULL; }
ClassPathDirEntry(const char* dir);
ClassFileStream* open_stream(const char* name, TRAPS);
bool stream_exists(const char* name) { return false; }
// Debugging
NOT_PRODUCT(void compile_the_world(Handle loader, TRAPS);)
};
@ -128,7 +126,6 @@ class ClassPathZipEntry: public ClassPathEntry {
ClassFileStream* open_stream(const char* name, TRAPS);
void contents_do(void f(const char* name, void* context), void* context);
bool is_multiple_versioned(TRAPS) NOT_CDS_RETURN_(false);
bool stream_exists(const char* name);
// Debugging
NOT_PRODUCT(void compile_the_world(Handle loader, TRAPS);)
};
@ -148,7 +145,6 @@ public:
ClassPathImageEntry(JImageFile* jimage, const char* name);
~ClassPathImageEntry();
ClassFileStream* open_stream(const char* name, TRAPS);
bool stream_exists(const char* name) { return false; }
// Debugging
NOT_PRODUCT(void compile_the_world(Handle loader, TRAPS);)
@ -259,7 +255,6 @@ class ClassLoader: AllStatic {
// Info used by CDS
CDS_ONLY(static SharedPathsMiscInfo * _shared_paths_misc_info;)
CDS_ONLY(static int _num_patch_mod_prefixes;)
// Initialization:
// - setup the boot loader's system class path
@ -434,9 +429,6 @@ class ClassLoader: AllStatic {
static void initialize_module_loader_map(JImageFile* jimage);
static s2 classloader_type(Symbol* class_name, ClassPathEntry* e,
int classpath_index, TRAPS);
static bool is_in_patch_module(const char* const file_name);
static void setup_patch_mod_path(); // Only when -Xshare:dump
static int num_patch_mod_prefixes() { return _num_patch_mod_prefixes; }
#endif
static void trace_class_path(const char* msg, const char* name = NULL);