225 lines
9.5 KiB
C++
225 lines
9.5 KiB
C++
/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2012, 2013, 2014, 2015.
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This file is part of Sortix.
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Sortix is free software: you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation, either version 3 of the License, or (at your option) any later
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version.
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Sortix is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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details.
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You should have received a copy of the GNU General Public License along with
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Sortix. If not, see <http://www.gnu.org/licenses/>.
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sortix/kernel/inode.h
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Interfaces and utility classes for implementing inodes.
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*******************************************************************************/
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#ifndef INCLUDE_SORTIX_KERNEL_INODE_H
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#define INCLUDE_SORTIX_KERNEL_INODE_H
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#include <sys/types.h>
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#include <stddef.h>
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#include <stdint.h>
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#include <sortix/timespec.h>
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#include <sortix/kernel/refcount.h>
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struct stat;
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struct statvfs;
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struct termios;
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struct wincurpos;
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struct winsize;
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struct kernel_dirent;
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namespace Sortix {
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class PollNode;
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struct ioctx_struct;
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typedef struct ioctx_struct ioctx_t;
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// An interface describing all operations possible on an inode.
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class Inode : public Refcountable
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{
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public: /* These must never change after construction and is read-only. */
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ino_t ino;
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dev_t dev;
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mode_t type; // For use by S_IS* macros.
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public:
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virtual ~Inode() { }
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virtual void linked() = 0;
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virtual void unlinked() = 0;
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virtual int sync(ioctx_t* ctx) = 0;
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virtual int stat(ioctx_t* ctx, struct stat* st) = 0;
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virtual int statvfs(ioctx_t* ctx, struct statvfs* stvfs) = 0;
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virtual int chmod(ioctx_t* ctx, mode_t mode) = 0;
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virtual int chown(ioctx_t* ctx, uid_t owner, gid_t group) = 0;
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virtual int truncate(ioctx_t* ctx, off_t length) = 0;
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virtual off_t lseek(ioctx_t* ctx, off_t offset, int whence) = 0;
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virtual ssize_t read(ioctx_t* ctx, uint8_t* buf, size_t count) = 0;
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virtual ssize_t pread(ioctx_t* ctx, uint8_t* buf, size_t count,
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off_t off) = 0;
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virtual ssize_t write(ioctx_t* ctx, const uint8_t* buf, size_t count) = 0;
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virtual ssize_t pwrite(ioctx_t* ctx, const uint8_t* buf, size_t count,
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off_t off) = 0;
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virtual int utimens(ioctx_t* ctx, const struct timespec* atime,
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const struct timespec* ctime,
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const struct timespec* mtime) = 0;
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virtual int isatty(ioctx_t* ctx) = 0;
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virtual ssize_t readdirents(ioctx_t* ctx, struct kernel_dirent* dirent,
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size_t size, off_t start, size_t maxcount) = 0;
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virtual Ref<Inode> open(ioctx_t* ctx, const char* filename, int flags,
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mode_t mode) = 0;
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virtual int mkdir(ioctx_t* ctx, const char* filename, mode_t mode) = 0;
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virtual int link(ioctx_t* ctx, const char* filename, Ref<Inode> node) = 0;
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virtual int link_raw(ioctx_t* ctx, const char* filename, Ref<Inode> node) = 0;
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virtual int unlink(ioctx_t* ctx, const char* filename) = 0;
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virtual int unlink_raw(ioctx_t* ctx, const char* filename) = 0;
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virtual int rmdir(ioctx_t* ctx, const char* filename) = 0;
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virtual int rmdir_me(ioctx_t* ctx) = 0;
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virtual int symlink(ioctx_t* ctx, const char* oldname,
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const char* filename) = 0;
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virtual ssize_t readlink(ioctx_t* ctx, char* buf, size_t bufsiz) = 0;
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virtual int tcgetwincurpos(ioctx_t* ctx, struct wincurpos* wcp) = 0;
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virtual int tcgetwinsize(ioctx_t* ctx, struct winsize* ws) = 0;
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virtual int tcsetpgrp(ioctx_t* ctx, pid_t pgid) = 0;
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virtual pid_t tcgetpgrp(ioctx_t* ctx) = 0;
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virtual int settermmode(ioctx_t* ctx, unsigned mode) = 0;
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virtual int gettermmode(ioctx_t* ctx, unsigned* mode) = 0;
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virtual int poll(ioctx_t* ctx, PollNode* node) = 0;
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virtual int rename_here(ioctx_t* ctx, Ref<Inode> from, const char* oldname,
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const char* newname) = 0;
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virtual Ref<Inode> accept(ioctx_t* ctx, uint8_t* addr, size_t* addrlen,
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int flags) = 0;
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virtual int bind(ioctx_t* ctx, const uint8_t* addr, size_t addrlen) = 0;
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virtual int connect(ioctx_t* ctx, const uint8_t* addr, size_t addrlen) = 0;
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virtual int listen(ioctx_t* ctx, int backlog) = 0;
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virtual ssize_t recv(ioctx_t* ctx, uint8_t* buf, size_t count, int flags) = 0;
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virtual ssize_t send(ioctx_t* ctx, const uint8_t* buf, size_t count,
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int flags) = 0;
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virtual int getsockopt(ioctx_t* ctx, int level, int option_name,
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void* option_value, size_t* option_size_ptr) = 0;
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virtual int setsockopt(ioctx_t* ctx, int level, int option_name,
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const void* option_value, size_t option_size) = 0;
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virtual ssize_t tcgetblob(ioctx_t* ctx, const char* name, void* buffer, size_t count) = 0;
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virtual ssize_t tcsetblob(ioctx_t* ctx, const char* name, const void* buffer, size_t count) = 0;
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virtual int unmounted(ioctx_t* ctx) = 0;
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virtual int tcdrain(ioctx_t* ctx) = 0;
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virtual int tcflow(ioctx_t* ctx, int action) = 0;
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virtual int tcflush(ioctx_t* ctx, int queue_selector) = 0;
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virtual int tcgetattr(ioctx_t* ctx, struct termios* tio) = 0;
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virtual pid_t tcgetsid(ioctx_t* ctx) = 0;
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virtual int tcsendbreak(ioctx_t* ctx, int duration) = 0;
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virtual int tcsetattr(ioctx_t* ctx, int actions, const struct termios* tio) = 0;
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};
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enum InodeType
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{
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INODE_TYPE_UNKNOWN = 0,
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INODE_TYPE_FILE,
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INODE_TYPE_STREAM,
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INODE_TYPE_TTY,
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INODE_TYPE_DIR,
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INODE_TYPE_SYMLINK,
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};
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class AbstractInode : public Inode
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{
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protected:
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kthread_mutex_t metalock;
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InodeType inode_type;
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mode_t stat_mode;
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/*nlink_t*/ unsigned long stat_nlink;
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uid_t stat_uid;
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gid_t stat_gid;
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off_t stat_size;
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struct timespec stat_atim;
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struct timespec stat_mtim;
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struct timespec stat_ctim;
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blksize_t stat_blksize;
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blkcnt_t stat_blocks;
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public:
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AbstractInode();
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virtual ~AbstractInode();
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virtual void linked();
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virtual void unlinked();
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virtual int sync(ioctx_t* ctx);
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virtual int stat(ioctx_t* ctx, struct stat* st);
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virtual int statvfs(ioctx_t* ctx, struct statvfs* stvfs);
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virtual int chmod(ioctx_t* ctx, mode_t mode);
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virtual int chown(ioctx_t* ctx, uid_t owner, gid_t group);
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virtual int truncate(ioctx_t* ctx, off_t length);
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virtual off_t lseek(ioctx_t* ctx, off_t offset, int whence);
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virtual ssize_t read(ioctx_t* ctx, uint8_t* buf, size_t count);
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virtual ssize_t pread(ioctx_t* ctx, uint8_t* buf, size_t count, off_t off);
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virtual ssize_t write(ioctx_t* ctx, const uint8_t* buf, size_t count);
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virtual ssize_t pwrite(ioctx_t* ctx, const uint8_t* buf, size_t count,
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off_t off);
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virtual int utimens(ioctx_t* ctx, const struct timespec* atime,
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const struct timespec* ctime,
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const struct timespec* mtime);
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virtual int isatty(ioctx_t* ctx);
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virtual ssize_t readdirents(ioctx_t* ctx, struct kernel_dirent* dirent,
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size_t size, off_t start, size_t maxcount);
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virtual Ref<Inode> open(ioctx_t* ctx, const char* filename, int flags,
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mode_t mode);
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virtual int mkdir(ioctx_t* ctx, const char* filename, mode_t mode);
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virtual int link(ioctx_t* ctx, const char* filename, Ref<Inode> node);
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virtual int link_raw(ioctx_t* ctx, const char* filename, Ref<Inode> node);
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virtual int unlink(ioctx_t* ctx, const char* filename);
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virtual int unlink_raw(ioctx_t* ctx, const char* filename);
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virtual int rmdir(ioctx_t* ctx, const char* filename);
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virtual int rmdir_me(ioctx_t* ctx);
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virtual int symlink(ioctx_t* ctx, const char* oldname,
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const char* filename);
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virtual ssize_t readlink(ioctx_t* ctx, char* buf, size_t bufsiz);
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virtual int tcgetwincurpos(ioctx_t* ctx, struct wincurpos* wcp);
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virtual int tcgetwinsize(ioctx_t* ctx, struct winsize* ws);
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virtual int tcsetpgrp(ioctx_t* ctx, pid_t pgid);
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virtual pid_t tcgetpgrp(ioctx_t* ctx);
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virtual int settermmode(ioctx_t* ctx, unsigned mode);
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virtual int gettermmode(ioctx_t* ctx, unsigned* mode);
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virtual int poll(ioctx_t* ctx, PollNode* node);
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virtual int rename_here(ioctx_t* ctx, Ref<Inode> from, const char* oldname,
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const char* newname);
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virtual Ref<Inode> accept(ioctx_t* ctx, uint8_t* addr, size_t* addrlen,
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int flags);
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virtual int bind(ioctx_t* ctx, const uint8_t* addr, size_t addrlen);
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virtual int connect(ioctx_t* ctx, const uint8_t* addr, size_t addrlen);
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virtual int listen(ioctx_t* ctx, int backlog);
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virtual ssize_t recv(ioctx_t* ctx, uint8_t* buf, size_t count, int flags);
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virtual ssize_t send(ioctx_t* ctx, const uint8_t* buf, size_t count,
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int flags);
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virtual int getsockopt(ioctx_t* ctx, int level, int option_name,
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void* option_value, size_t* option_size_ptr);
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virtual int setsockopt(ioctx_t* ctx, int level, int option_name,
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const void* option_value, size_t option_size);
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virtual ssize_t tcgetblob(ioctx_t* ctx, const char* name, void* buffer, size_t count);
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virtual ssize_t tcsetblob(ioctx_t* ctx, const char* name, const void* buffer, size_t count);
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virtual int unmounted(ioctx_t* ctx);
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virtual int tcdrain(ioctx_t* ctx);
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virtual int tcflow(ioctx_t* ctx, int action);
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virtual int tcflush(ioctx_t* ctx, int queue_selector);
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virtual int tcgetattr(ioctx_t* ctx, struct termios* tio);
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virtual pid_t tcgetsid(ioctx_t* ctx);
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virtual int tcsendbreak(ioctx_t* ctx, int duration);
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virtual int tcsetattr(ioctx_t* ctx, int actions, const struct termios* tio);
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};
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} // namespace Sortix
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#endif
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