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https://github.com/SerenityOS/serenity
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a9204510a4
Instead of checking it at every call site (to generate EBADF), we make file_description(fd) return a KResultOr<NonnullRefPtr<FileDescription>>. This allows us to wrap all the calls in TRY(). :^) The only place that got a little bit messier from this is sys$mount(), and there's a whole bunch of things there in need of cleanup.
31 lines
854 B
C++
31 lines
854 B
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <Kernel/FileSystem/FileDescription.h>
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#include <Kernel/Process.h>
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namespace Kernel {
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KResultOr<FlatPtr> Process::sys$fchown(int fd, UserID uid, GroupID gid)
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{
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VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this);
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REQUIRE_PROMISE(chown);
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auto description = TRY(fds().file_description(fd));
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return description->chown(uid, gid);
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}
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KResultOr<FlatPtr> Process::sys$chown(Userspace<const Syscall::SC_chown_params*> user_params)
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{
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VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this);
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REQUIRE_PROMISE(chown);
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auto params = TRY(copy_typed_from_user(user_params));
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auto path = TRY(get_syscall_path_argument(params.path));
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return VirtualFileSystem::the().chown(path->view(), params.uid, params.gid, current_directory());
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}
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}
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