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Kernel: Consolidate finding the ELF stack size with validation

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Previously, we started parsing the ELF file again in a completely
different place, and without the partial mapping that we do while
validating.

Instead of doing manual parsing in two places, just capture the
requested stack size right after we validated it.
This commit is contained in:
Tim Schumacher 2023-07-10 11:13:13 +02:00 • committed by Andrew Kaster
parent 398f7ae988
commit 9d6372ff07
5 changed files with 29 additions and 49 deletions
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6
Kernel/Tasks/Process.h
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@ -494,7 +494,7 @@ public:
ErrorOr<void> exec(NonnullOwnPtr<KString> path, Vector<NonnullOwnPtr<KString>> arguments, Vector<NonnullOwnPtr<KString>> environment, Thread*& new_main_thread, InterruptsState& previous_interrupts_state, int recursion_depth = 0);
ErrorOr<LoadResult> load(Memory::AddressSpace& new_space, NonnullRefPtr<OpenFileDescription> main_program_description, RefPtr<OpenFileDescription> interpreter_description, const ElfW(Ehdr) & main_program_header);
ErrorOr<LoadResult> load(Memory::AddressSpace& new_space, NonnullRefPtr<OpenFileDescription> main_program_description, RefPtr<OpenFileDescription> interpreter_description, const ElfW(Ehdr) & main_program_header, Optional<size_t> minimum_stack_size = {});
void terminate_due_to_signal(u8 signal);
ErrorOr<void> send_signal(u8 signal, Process* sender);
@ -624,12 +624,12 @@ private:
bool create_perf_events_buffer_if_needed();
void delete_perf_events_buffer();
ErrorOr<void> do_exec(NonnullRefPtr<OpenFileDescription> main_program_description, Vector<NonnullOwnPtr<KString>> arguments, Vector<NonnullOwnPtr<KString>> environment, RefPtr<OpenFileDescription> interpreter_description, Thread*& new_main_thread, InterruptsState& previous_interrupts_state, const ElfW(Ehdr) & main_program_header);
ErrorOr<void> do_exec(NonnullRefPtr<OpenFileDescription> main_program_description, Vector<NonnullOwnPtr<KString>> arguments, Vector<NonnullOwnPtr<KString>> environment, RefPtr<OpenFileDescription> interpreter_description, Thread*& new_main_thread, InterruptsState& previous_interrupts_state, const ElfW(Ehdr) & main_program_header, Optional<size_t> minimum_stack_size = {});
ErrorOr<FlatPtr> do_write(OpenFileDescription&, UserOrKernelBuffer const&, size_t, Optional<off_t> = {});
ErrorOr<FlatPtr> do_statvfs(FileSystem const& path, Custody const*, statvfs* buf);
ErrorOr<RefPtr<OpenFileDescription>> find_elf_interpreter_for_executable(StringView path, ElfW(Ehdr) const& main_executable_header, size_t main_executable_header_size, size_t file_size);
ErrorOr<RefPtr<OpenFileDescription>> find_elf_interpreter_for_executable(StringView path, ElfW(Ehdr) const& main_executable_header, size_t main_executable_header_size, size_t file_size, Optional<size_t>& minimum_stack_size);
ErrorOr<void> do_kill(Process&, int signal);
ErrorOr<void> do_killpg(ProcessGroupID pgrp, int signal);