mirror of
https://github.com/trapexit/mergerfs.git
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83 lines
2.2 KiB
C++
83 lines
2.2 KiB
C++
/*
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The MIT License (MIT)
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Copyright (c) 2014 Antonio SJ Musumeci <trapexit@spawn.link>
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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*/
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#if READ_BUF
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#include <fuse.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <string.h>
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#include "fileinfo.hpp"
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typedef struct fuse_bufvec fuse_bufvec;
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static
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int
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_read_buf(const int fd,
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fuse_bufvec **bufp,
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const size_t size,
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const off_t offset)
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{
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fuse_bufvec *src;
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src = (fuse_bufvec*)malloc(sizeof(fuse_bufvec));
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if(src == NULL)
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return -ENOMEM;
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*src = FUSE_BUFVEC_INIT(size);
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src->buf->flags = (fuse_buf_flags)(FUSE_BUF_IS_FD|FUSE_BUF_FD_SEEK|FUSE_BUF_FD_RETRY);
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src->buf->fd = fd;
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src->buf->pos = offset;
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*bufp = src;
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return 0;
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}
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namespace mergerfs
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{
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namespace fuse
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{
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int
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read_buf(const char *fusepath,
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fuse_bufvec **bufp,
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size_t size,
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off_t offset,
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fuse_file_info *ffi)
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{
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FileInfo *fi = reinterpret_cast<FileInfo*>(ffi->fh);
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return _read_buf(fi->fd,
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bufp,
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size,
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offset);
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}
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}
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}
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#endif
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