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Kernel+Loader.so: Allow dynamic executables without an interpreter

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Commit a3a9016701 removed the PT_INTERP header
from Loader.so which cleaned up some kernel code in execve. Unfortunately
it prevents Loader.so from being run as an executable
This commit is contained in:
William Marlow 2021-01-02 21:31:01 +00:00 • committed by Andreas Kling
parent 137237b9c2
commit 747e8de96a
3 changed files with 28 additions and 16 deletions
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6
Kernel/Process.h
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@ -429,7 +429,7 @@ public:
Yes,
};
KResultOr<LoadResult> load(NonnullRefPtr<FileDescription> main_program_description, RefPtr<FileDescription> interpreter_description);
KResultOr<LoadResult> load(NonnullRefPtr<FileDescription> main_program_description, RefPtr<FileDescription> interpreter_description, bool is_dynamic);
KResultOr<LoadResult> load_elf_object(FileDescription& object_description, FlatPtr load_offset, ShouldAllocateTls);
bool is_superuser() const
@ -519,10 +519,10 @@ private:
void kill_threads_except_self();
void kill_all_threads();
int do_exec(NonnullRefPtr<FileDescription> main_program_description, Vector<String> arguments, Vector<String> environment, RefPtr<FileDescription> interpreter_description, Thread*& new_main_thread, u32& prev_flags);
int do_exec(NonnullRefPtr<FileDescription> main_program_description, Vector<String> arguments, Vector<String> environment, RefPtr<FileDescription> interpreter_description, Thread*& new_main_thread, u32& prev_flags, bool is_dynamic);
ssize_t do_write(FileDescription&, const UserOrKernelBuffer&, size_t);
KResultOr<NonnullRefPtr<FileDescription>> find_elf_interpreter_for_executable(const String& path, char (&first_page)[PAGE_SIZE], int nread, size_t file_size);
KResultOr<RefPtr<FileDescription>> find_elf_interpreter_for_executable(const String& path, char (&first_page)[PAGE_SIZE], int nread, size_t file_size);
int alloc_fd(int first_candidate_fd = 0);
void disown_all_shared_buffers();