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58 lines
1.6 KiB
C++
58 lines
1.6 KiB
C++
/*
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* Copyright (c) 2021, Xavier Defrang <xavier.defrang@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Error.h>
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#include <AK/OwnPtr.h>
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#include <sys/stat.h>
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namespace Core {
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class FilePermissionsMask {
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public:
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static ErrorOr<FilePermissionsMask> parse(StringView string);
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static ErrorOr<FilePermissionsMask> from_numeric_notation(StringView string);
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static ErrorOr<FilePermissionsMask> from_symbolic_notation(StringView string);
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FilePermissionsMask()
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: m_clear_mask(0)
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, m_write_mask(0)
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{
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}
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FilePermissionsMask& assign_permissions(mode_t mode);
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FilePermissionsMask& add_permissions(mode_t mode);
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FilePermissionsMask& remove_permissions(mode_t mode);
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mode_t apply(mode_t mode) const
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{
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if (m_directory_or_executable_mask && (S_ISDIR(mode) || (mode & 0111) != 0))
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mode = m_directory_or_executable_mask->apply(mode);
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return m_write_mask | (mode & ~m_clear_mask);
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}
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mode_t clear_mask() const { return m_clear_mask; }
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mode_t write_mask() const { return m_write_mask; }
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FilePermissionsMask& directory_or_executable_mask()
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{
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if (!m_directory_or_executable_mask)
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m_directory_or_executable_mask = make<FilePermissionsMask>();
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return *m_directory_or_executable_mask;
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}
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private:
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mode_t m_clear_mask; // the bits that will be cleared
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mode_t m_write_mask; // the bits that will be set
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// A separate mask, only for files that already have some executable bit set or directories.
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OwnPtr<FilePermissionsMask> m_directory_or_executable_mask;
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};
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}
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