mergerfs/src/fuse_copy_file_range.cpp

71 lines
2.1 KiB
C++

/*
Copyright (c) 2019, Antonio SJ Musumeci <trapexit@spawn.link>
Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "errno.hpp"
#include "fileinfo.hpp"
#include "fs_copy_file_range.hpp"
#include "fuse.h"
#include <stdio.h>
namespace l
{
static
ssize_t
copy_file_range(const int fd_in_,
off_t offset_in_,
const int fd_out_,
off_t offset_out_,
size_t size_,
int flags_)
{
ssize_t rv;
rv = fs::copy_file_range(fd_in_,
&offset_in_,
fd_out_,
&offset_out_,
size_,
flags_);
return ((rv == -1) ? -errno : rv);
}
}
namespace FUSE
{
ssize_t
copy_file_range(const fuse_file_info_t *ffi_in_,
off_t offset_in_,
const fuse_file_info_t *ffi_out_,
off_t offset_out_,
size_t size_,
int flags_)
{
FileInfo *fi_in = reinterpret_cast<FileInfo*>(ffi_in_->fh);
FileInfo *fi_out = reinterpret_cast<FileInfo*>(ffi_out_->fh);
return l::copy_file_range(fi_in->fd,
offset_in_,
fi_out->fd,
offset_out_,
size_,
flags_);
}
}