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c3351d4b9f
Instead of getting credentials from Process::current(), we now require that they be provided as input to the various VFS functions. This ensures that an atomic set of credentials is used throughout an entire VFS operation.
40 lines
1.1 KiB
C++
40 lines
1.1 KiB
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 <AK/StringView.h>
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#include <Kernel/FileSystem/VirtualFileSystem.h>
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#include <Kernel/Process.h>
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namespace Kernel {
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ErrorOr<FlatPtr> Process::sys$unlink(int dirfd, Userspace<char const*> user_path, size_t path_length, int flags)
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{
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VERIFY_NO_PROCESS_BIG_LOCK(this);
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TRY(require_promise(Pledge::cpath));
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auto path = TRY(get_syscall_path_argument(user_path, path_length));
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if (flags & ~AT_REMOVEDIR)
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return Error::from_errno(EINVAL);
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RefPtr<Custody> base;
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if (dirfd == AT_FDCWD) {
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base = current_directory();
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} else {
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auto base_description = TRY(open_file_description(dirfd));
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if (!base_description->custody())
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return Error::from_errno(EINVAL);
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base = base_description->custody();
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}
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if (flags & AT_REMOVEDIR)
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TRY(VirtualFileSystem::the().rmdir(credentials(), path->view(), *base));
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else
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TRY(VirtualFileSystem::the().unlink(credentials(), path->view(), *base));
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return 0;
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}
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}
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