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Kernel: Use TRY() in sys$module_load() and sys$module_unload()

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This commit is contained in:
Andreas Kling 2021-09-06 20:23:08 +02:00
parent 56a2594de7
commit 274d535d0e
Notes: sideshowbarker 2024-07-18 04:34:57 +09:00 
Author: https://github.com/awesomekling
Commit: https://github.com/SerenityOS/serenity/commit/274d535d0e1
1 changed files with 6 additions and 17 deletions
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23
Kernel/Syscalls/module.cpp
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@ -23,22 +23,13 @@ KResultOr<FlatPtr> Process::sys$module_load(Userspace<const char*> user_path, si
REQUIRE_NO_PROMISES;
auto path = get_syscall_path_argument(user_path, path_length);
if (path.is_error())
return path.error();
auto description_or_error = VirtualFileSystem::the().open(path.value()->view(), O_RDONLY, 0, current_directory());
if (description_or_error.is_error())
return description_or_error.error();
auto& description = description_or_error.value();
auto payload_or_error = description->read_entire_file();
if (payload_or_error.is_error())
return payload_or_error.error();
auto path = TRY(get_syscall_path_argument(user_path, path_length));
auto description = TRY(VirtualFileSystem::the().open(path->view(), O_RDONLY, 0, current_directory()));
auto payload = TRY(description->read_entire_file());
auto& payload = *payload_or_error.value();
auto storage = KBuffer::try_create_with_size(payload.size());
auto storage = KBuffer::try_create_with_bytes(ReadonlyBytes { payload->data(), payload->size() });
if (!storage)
return ENOMEM;
memcpy(storage->data(), payload.data(), payload.size());
auto elf_image = try_make<ELF::Image>(storage->data(), storage->size());
if (!elf_image)
@ -155,11 +146,9 @@ KResultOr<FlatPtr> Process::sys$module_unload(Userspace<const char*> user_name,
REQUIRE_NO_PROMISES;
auto module_name_or_error = try_copy_kstring_from_user(user_name, name_length);
if (module_name_or_error.is_error())
return module_name_or_error.error();
auto module_name = TRY(try_copy_kstring_from_user(user_name, name_length));
auto it = g_modules->find(module_name_or_error.value()->view());
auto it = g_modules->find(module_name->view());
if (it == g_modules->end())
return ENOENT;