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https://github.com/RGBCube/serenity
synced 2025-07-27 01:47:35 +00:00
AK: Make Vector::try_* functions return ErrorOr<void>
Instead of signalling allocation failure with a bool return value (false), we now use ErrorOr<void> and return ENOMEM as appropriate. This allows us to use TRY() and MUST() with Vector. :^)
This commit is contained in:
parent
cd49f30bea
commit
88b6428c25
16 changed files with 98 additions and 152 deletions
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@ -100,15 +100,13 @@ static ErrorOr<FlatPtr> make_userspace_context_for_main_thread([[maybe_unused]]
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Vector<FlatPtr> argv_entries;
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for (auto& argument : arguments) {
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push_string_on_new_stack(argument.view());
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if (!argv_entries.try_append(new_sp))
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return ENOMEM;
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TRY(argv_entries.try_append(new_sp));
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}
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Vector<FlatPtr> env_entries;
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for (auto& variable : environment) {
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push_string_on_new_stack(variable.view());
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if (!env_entries.try_append(new_sp))
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return ENOMEM;
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TRY(env_entries.try_append(new_sp));
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}
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for (auto& value : auxiliary_values) {
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@ -810,8 +808,7 @@ ErrorOr<void> Process::exec(NonnullOwnPtr<KString> path, NonnullOwnPtrVector<KSt
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auto shebang_words = shebang_result.release_value();
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auto shebang_path = TRY(shebang_words.first().try_clone());
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arguments.ptr_at(0) = move(path);
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if (!arguments.try_prepend(move(shebang_words)))
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return ENOMEM;
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TRY(arguments.try_prepend(move(shebang_words)));
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return exec(move(shebang_path), move(arguments), move(environment), ++recursion_depth);
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}
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@ -881,13 +878,11 @@ ErrorOr<FlatPtr> Process::sys$execve(Userspace<const Syscall::SC_execve_params*>
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if (size.has_overflow())
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return EOVERFLOW;
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Vector<Syscall::StringArgument, 32> strings;
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if (!strings.try_resize(list.length))
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return ENOMEM;
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TRY(strings.try_resize(list.length));
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TRY(copy_from_user(strings.data(), list.strings, size.value()));
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for (size_t i = 0; i < list.length; ++i) {
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auto string = TRY(try_copy_kstring_from_user(strings[i]));
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if (!output.try_append(move(string)))
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return ENOMEM;
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TRY(output.try_append(move(string)));
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}
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return {};
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};
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@ -27,8 +27,8 @@ ErrorOr<FlatPtr> Process::sys$purge(int mode)
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if (vmobject.is_anonymous()) {
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// In the event that the append fails, only attempt to continue
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// the purge if we have already appended something successfully.
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if (!vmobjects.try_append(static_cast<Memory::AnonymousVMObject&>(vmobject)) && vmobjects.is_empty()) {
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result = ENOMEM;
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if (auto append_result = vmobjects.try_append(static_cast<Memory::AnonymousVMObject&>(vmobject)); append_result.is_error() && vmobjects.is_empty()) {
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result = append_result.release_error();
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return IterationDecision::Break;
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}
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}
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@ -50,8 +50,8 @@ ErrorOr<FlatPtr> Process::sys$purge(int mode)
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if (vmobject.is_inode()) {
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// In the event that the append fails, only attempt to continue
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// the purge if we have already appended something successfully.
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if (!vmobjects.try_append(static_cast<Memory::InodeVMObject&>(vmobject)) && vmobjects.is_empty()) {
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result = ENOMEM;
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if (auto append_result = vmobjects.try_append(static_cast<Memory::InodeVMObject&>(vmobject)); append_result.is_error() && vmobjects.is_empty()) {
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result = append_result.release_error();
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return IterationDecision::Break;
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}
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}
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@ -50,8 +50,7 @@ ErrorOr<FlatPtr> Process::sys$readv(int fd, Userspace<const struct iovec*> iov,
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u64 total_length = 0;
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Vector<iovec, 32> vecs;
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if (!vecs.try_resize(iov_count))
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return ENOMEM;
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TRY(vecs.try_resize(iov_count));
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TRY(copy_n_from_user(vecs.data(), iov, iov_count));
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for (auto& vec : vecs) {
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total_length += vec.iov_len;
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@ -72,10 +72,8 @@ ErrorOr<FlatPtr> Process::sys$select(Userspace<const Syscall::SC_select_params*>
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continue;
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auto description = TRY(fds().open_file_description(fd));
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if (!fds_info.try_append({ move(description), block_flags }))
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return ENOMEM;
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if (!selected_fds.try_append(fd))
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return ENOMEM;
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TRY(fds_info.try_append({ move(description), block_flags }));
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TRY(selected_fds.try_append(fd));
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}
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if constexpr (IO_DEBUG || POLL_SELECT_DEBUG)
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@ -146,8 +144,7 @@ ErrorOr<FlatPtr> Process::sys$poll(Userspace<const Syscall::SC_poll_params*> use
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nfds_checked *= params.nfds;
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if (nfds_checked.has_overflow())
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return EFAULT;
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if (!fds_copy.try_resize(params.nfds))
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return ENOMEM;
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TRY(fds_copy.try_resize(params.nfds));
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TRY(copy_from_user(fds_copy.data(), ¶ms.fds[0], nfds_checked.value()));
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}
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@ -162,8 +159,7 @@ ErrorOr<FlatPtr> Process::sys$poll(Userspace<const Syscall::SC_poll_params*> use
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block_flags |= BlockFlags::Write;
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if (pfd.events & POLLPRI)
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block_flags |= BlockFlags::ReadPriority;
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if (!fds_info.try_append({ move(description), block_flags }))
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return ENOMEM;
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TRY(fds_info.try_append({ move(description), block_flags }));
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}
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auto current_thread = Thread::current();
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@ -169,8 +169,7 @@ ErrorOr<FlatPtr> Process::sys$setgroups(size_t count, Userspace<const gid_t*> us
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}
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Vector<gid_t> new_extra_gids;
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if (!new_extra_gids.try_resize(count))
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return ENOMEM;
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TRY(new_extra_gids.try_resize(count));
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TRY(copy_n_from_user(new_extra_gids.data(), user_gids, count));
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HashTable<gid_t> unique_extra_gids;
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@ -180,8 +179,7 @@ ErrorOr<FlatPtr> Process::sys$setgroups(size_t count, Userspace<const gid_t*> us
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}
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ProtectedDataMutationScope scope { *this };
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if (!m_protected_values.extra_gids.try_resize(unique_extra_gids.size()))
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return ENOMEM;
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TRY(m_protected_values.extra_gids.try_resize(unique_extra_gids.size()));
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size_t i = 0;
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for (auto& extra_gid : unique_extra_gids) {
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if (extra_gid == gid())
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@ -168,8 +168,7 @@ ErrorOr<FlatPtr> Process::sys$sendmsg(int sockfd, Userspace<const struct msghdr*
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if (msg.msg_iovlen != 1)
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return ENOTSUP; // FIXME: Support this :)
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Vector<iovec, 1> iovs;
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if (!iovs.try_resize(msg.msg_iovlen))
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return ENOMEM;
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TRY(iovs.try_resize(msg.msg_iovlen));
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TRY(copy_n_from_user(iovs.data(), msg.msg_iov, msg.msg_iovlen));
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if (iovs[0].iov_len > NumericLimits<ssize_t>::max())
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return EINVAL;
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@ -201,8 +200,7 @@ ErrorOr<FlatPtr> Process::sys$recvmsg(int sockfd, Userspace<struct msghdr*> user
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if (msg.msg_iovlen != 1)
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return ENOTSUP; // FIXME: Support this :)
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Vector<iovec, 1> iovs;
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if (!iovs.try_resize(msg.msg_iovlen))
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return ENOMEM;
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TRY(iovs.try_resize(msg.msg_iovlen));
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TRY(copy_n_from_user(iovs.data(), msg.msg_iov, msg.msg_iovlen));
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Userspace<sockaddr*> user_addr((FlatPtr)msg.msg_name);
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@ -24,8 +24,7 @@ ErrorOr<FlatPtr> Process::sys$writev(int fd, Userspace<const struct iovec*> iov,
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u64 total_length = 0;
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Vector<iovec, 32> vecs;
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if (!vecs.try_resize(iov_count))
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return ENOMEM;
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TRY(vecs.try_resize(iov_count));
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TRY(copy_n_from_user(vecs.data(), iov, iov_count));
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for (auto& vec : vecs) {
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total_length += vec.iov_len;
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