105 lines
3.4 KiB
C++
105 lines
3.4 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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fs/kram.h
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Kernel RAM filesystem.
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*******************************************************************************/
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#ifndef SORTIX_FS_KRAM_H
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#define SORTIX_FS_KRAM_H
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#include <sortix/kernel/inode.h>
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#include <sortix/kernel/kthread.h>
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#include <sortix/kernel/fcache.h>
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namespace Sortix {
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namespace KRAMFS {
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struct DirEntry
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{
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Ref<Inode> inode;
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char* name;
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};
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class File : public AbstractInode
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{
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public:
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File(InodeType inode_type, mode_t type, dev_t dev, ino_t ino, uid_t owner,
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gid_t group, mode_t mode);
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virtual ~File();
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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 pread(ioctx_t* ctx, uint8_t* buf, size_t count,
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off_t off);
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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 ssize_t readlink(ioctx_t* ctx, char* buf, size_t bufsiz);
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virtual ssize_t tcgetblob(ioctx_t* ctx, const char* name, void* buffer,
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size_t count);
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virtual int statvfs(ioctx_t* ctx, struct statvfs* stvfs);
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private:
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FileCache fcache;
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};
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class Dir : public AbstractInode
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{
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public:
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Dir(dev_t dev, ino_t ino, uid_t owner, gid_t group, mode_t mode);
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virtual ~Dir();
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virtual ssize_t readdirents(ioctx_t* ctx, struct dirent* dirent,
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size_t size, off_t start);
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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 int rename_here(ioctx_t* ctx, Ref<Inode> from, const char* oldname,
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const char* newname);
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virtual ssize_t tcgetblob(ioctx_t* ctx, const char* name, void* buffer,
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size_t count);
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virtual int statvfs(ioctx_t* ctx, struct statvfs* stvfs);
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private:
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size_t FindChild(const char* filename);
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bool AddChild(const char* filename, Ref<Inode> inode);
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void RemoveChild(size_t index);
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private:
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kthread_mutex_t dir_lock;
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size_t children_used;
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size_t children_length;
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DirEntry* children;
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bool shut_down;
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};
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} // namespace KRAMFS
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} // namespace Sortix
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#endif
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