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7864898f52
`Directory::path()` returning `ErrorOr` makes it awkward to use, and all current users create a Directory with a path. If we find we need pathless directories later, we can come up with a clever solution then. :^)
101 lines
2.7 KiB
C++
101 lines
2.7 KiB
C++
/*
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* Copyright (c) 2022, kleines Filmröllchen <filmroellchen@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 "Directory.h"
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#include "DirIterator.h"
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#include "System.h"
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#include <dirent.h>
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namespace Core {
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// We assume that the fd is a valid directory.
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Directory::Directory(int fd, LexicalPath path)
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: m_path(move(path))
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, m_directory_fd(fd)
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{
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}
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Directory::Directory(Directory&& other)
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: m_path(move(other.m_path))
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, m_directory_fd(other.m_directory_fd)
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{
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other.m_directory_fd = -1;
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}
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Directory::~Directory()
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{
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if (m_directory_fd != -1)
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MUST(System::close(m_directory_fd));
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}
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ErrorOr<void> Directory::chown(uid_t uid, gid_t gid)
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{
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if (m_directory_fd == -1)
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return Error::from_syscall("fchown"sv, -EBADF);
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TRY(Core::System::fchown(m_directory_fd, uid, gid));
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return {};
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}
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ErrorOr<bool> Directory::is_valid_directory(int fd)
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{
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auto stat = TRY(System::fstat(fd));
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return stat.st_mode & S_IFDIR;
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}
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ErrorOr<Directory> Directory::adopt_fd(int fd, LexicalPath path)
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{
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// This will also fail if the fd is invalid in the first place.
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if (!TRY(Directory::is_valid_directory(fd)))
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return Error::from_errno(ENOTDIR);
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return Directory { fd, move(path) };
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}
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ErrorOr<Directory> Directory::create(DeprecatedString path, CreateDirectories create_directories, mode_t creation_mode)
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{
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return create(LexicalPath { move(path) }, create_directories, creation_mode);
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}
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ErrorOr<Directory> Directory::create(LexicalPath path, CreateDirectories create_directories, mode_t creation_mode)
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{
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if (create_directories == CreateDirectories::Yes)
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TRY(ensure_directory(path, creation_mode));
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// FIXME: doesn't work on Linux probably
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auto fd = TRY(System::open(path.string(), O_CLOEXEC));
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return adopt_fd(fd, move(path));
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}
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ErrorOr<void> Directory::ensure_directory(LexicalPath const& path, mode_t creation_mode)
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{
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if (path.basename() == "/" || path.basename() == ".")
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return {};
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TRY(ensure_directory(path.parent(), creation_mode));
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auto return_value = System::mkdir(path.string(), creation_mode);
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// We don't care if the directory already exists.
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if (return_value.is_error() && return_value.error().code() != EEXIST)
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return return_value;
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return {};
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}
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ErrorOr<NonnullOwnPtr<File>> Directory::open(StringView filename, File::OpenMode mode) const
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{
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auto fd = TRY(System::openat(m_directory_fd, filename, File::open_mode_to_options(mode)));
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return File::adopt_fd(fd, mode);
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}
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ErrorOr<struct stat> Directory::stat() const
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{
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return System::fstat(m_directory_fd);
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}
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ErrorOr<DirIterator> Directory::create_iterator() const
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{
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return DirIterator { path().string() };
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}
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}
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