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57 lines
1.7 KiB
C++
57 lines
1.7 KiB
C++
/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2012.
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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/util.h
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Utility classes for kernel filesystems.
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*******************************************************************************/
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#ifndef SORTIX_FS_UTIL_H
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#define SORTIX_FS_UTIL_H
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#include <sortix/kernel/inode.h>
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namespace Sortix {
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class UtilMemoryBuffer : public AbstractInode
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{
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public:
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UtilMemoryBuffer(dev_t dev, ino_t ino, uid_t owner, gid_t group,
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mode_t mode, uint8_t* buf, size_t bufsize,
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bool write = true, bool deletebuf = true);
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virtual ~UtilMemoryBuffer();
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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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private:
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kthread_mutex_t filelock;
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uint8_t* buf;
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size_t bufsize;
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bool write;
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bool deletebuf;
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};
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} // namespace Sortix
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#endif
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