53 lines
1.6 KiB
C++
53 lines
1.6 KiB
C++
/*
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* Copyright (c) 2012 Jonas 'Sortie' Termansen.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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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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