44 lines
1.5 KiB
C++
44 lines
1.5 KiB
C++
/*
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* Copyright (c) 2013 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/null.h
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* Bit bucket special device.
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*/
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#ifndef SORTIX_FS_NULL_H
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#define SORTIX_FS_NULL_H
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#include <sortix/kernel/inode.h>
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namespace Sortix {
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class Null : public AbstractInode
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{
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public:
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Null(dev_t dev, ino_t ino, uid_t owner, gid_t group, mode_t mode);
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virtual ~Null();
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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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};
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} // namespace Sortix
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#endif
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