85 lines
2.2 KiB
C++
85 lines
2.2 KiB
C++
#pragma once
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#include <BAN/Array.h>
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#include <kernel/FS/Inode.h>
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#include <limits.h>
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#include <sys/stat.h>
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namespace Kernel
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{
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class OpenFileDescriptorSet
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{
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BAN_NON_COPYABLE(OpenFileDescriptorSet);
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public:
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OpenFileDescriptorSet(const Credentials&);
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~OpenFileDescriptorSet();
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OpenFileDescriptorSet& operator=(OpenFileDescriptorSet&&);
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BAN::ErrorOr<void> clone_from(const OpenFileDescriptorSet&);
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BAN::ErrorOr<int> open(BAN::RefPtr<Inode>, int flags);
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BAN::ErrorOr<int> open(BAN::StringView absolute_path, int flags);
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BAN::ErrorOr<int> socket(int domain, int type, int protocol);
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BAN::ErrorOr<void> pipe(int fds[2]);
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BAN::ErrorOr<int> dup(int);
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BAN::ErrorOr<int> dup2(int, int);
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BAN::ErrorOr<int> fcntl(int fd, int cmd, int extra);
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BAN::ErrorOr<void> seek(int fd, off_t offset, int whence);
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BAN::ErrorOr<off_t> tell(int) const;
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BAN::ErrorOr<void> fstat(int fd, struct stat*) const;
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BAN::ErrorOr<void> fstatat(int fd, BAN::StringView path, struct stat* buf, int flag);
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BAN::ErrorOr<void> stat(BAN::StringView absolute_path, struct stat* buf, int flag);
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BAN::ErrorOr<void> close(int);
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void close_all();
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void close_cloexec();
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BAN::ErrorOr<size_t> read(int fd, BAN::ByteSpan);
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BAN::ErrorOr<size_t> write(int fd, BAN::ConstByteSpan);
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BAN::ErrorOr<void> read_dir_entries(int fd, DirectoryEntryList* list, size_t list_size);
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BAN::ErrorOr<BAN::StringView> path_of(int) const;
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BAN::ErrorOr<BAN::RefPtr<Inode>> inode_of(int);
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BAN::ErrorOr<int> flags_of(int) const;
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private:
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struct OpenFileDescription : public BAN::RefCounted<OpenFileDescription>
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{
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OpenFileDescription(BAN::RefPtr<Inode> inode, BAN::String path, off_t offset, int flags)
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: inode(inode)
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, path(BAN::move(path))
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, offset(offset)
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, flags(flags)
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{ }
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BAN::RefPtr<Inode> inode;
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BAN::String path;
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off_t offset { 0 };
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int flags { 0 };
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friend class BAN::RefPtr<OpenFileDescription>;
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};
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BAN::ErrorOr<void> validate_fd(int) const;
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BAN::ErrorOr<int> get_free_fd() const;
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BAN::ErrorOr<void> get_free_fd_pair(int fds[2]) const;
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private:
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const Credentials& m_credentials;
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BAN::Array<BAN::RefPtr<OpenFileDescription>, OPEN_MAX> m_open_files;
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};
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}
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