91 lines
2.1 KiB
C++
91 lines
2.1 KiB
C++
/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2013.
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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/null.cpp
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Bit bucket special device.
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*******************************************************************************/
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#include <sys/types.h>
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#include <stdint.h>
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#include <sortix/stat.h>
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#include <sortix/kernel/inode.h>
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#include "null.h"
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namespace Sortix {
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Null::Null(dev_t dev, ino_t ino, uid_t owner, gid_t group, mode_t mode)
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{
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inode_type = INODE_TYPE_STREAM;
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if ( !dev )
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dev = (dev_t) this;
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if ( !ino )
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ino = (ino_t) this;
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this->type = S_IFCHR;
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this->stat_uid = owner;
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this->stat_gid = group;
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this->stat_mode = (mode & S_SETABLE) | this->type;
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this->stat_size = 0;
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this->stat_blksize = 1;
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this->dev = dev;
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this->ino = ino;
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}
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Null::~Null()
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{
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}
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int Null::truncate(ioctx_t* /*ctx*/, off_t /*length*/)
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{
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return 0;
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}
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off_t Null::lseek(ioctx_t* /*ctx*/, off_t offset, int /*whence*/)
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{
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return offset;
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}
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ssize_t Null::read(ioctx_t* /*ctx*/, uint8_t* /*buf*/, size_t /*count*/)
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{
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return 0;
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}
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ssize_t Null::pread(ioctx_t* /*ctx*/, uint8_t* /*buf*/, size_t /*count*/,
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off_t /*off*/)
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{
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return 0;
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}
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ssize_t Null::write(ioctx_t* /*ctx*/, const uint8_t* /*buf*/, size_t count)
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{
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return count;
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}
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ssize_t Null::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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return count;
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}
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} // namespace Sortix
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