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Rework fuse read to use same buffers as messages

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This commit is contained in:
Antonio SJ Musumeci 2023-02-26 15:16:18 -05:00
parent 4a647beec1
commit 373d331f39
9 changed files with 188 additions and 202 deletions
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98
src/fuse_read_buf.cpp
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@ -1,98 +0,0 @@
/*
Copyright (c) 2016, 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 "fuse.h"
#include <stdlib.h>
#include <string.h>
typedef struct fuse_bufvec fuse_bufvec;
namespace l
{
static
int
read_buf(const int fd_,
fuse_bufvec **bufp_,
const size_t size_,
const off_t offset_)
{
fuse_bufvec *src;
src = (fuse_bufvec*)malloc(sizeof(fuse_bufvec));
if(src == NULL)
return -ENOMEM;
*src = FUSE_BUFVEC_INIT(size_);
src->buf->flags = (fuse_buf_flags)(FUSE_BUF_IS_FD|FUSE_BUF_FD_SEEK|FUSE_BUF_FD_RETRY);
src->buf->fd = fd_;
src->buf->pos = offset_;
*bufp_ = src;
return 0;
}
}
namespace FUSE
{
int
read_buf(const fuse_file_info_t *ffi_,
fuse_bufvec **bufp_,
size_t size_,
off_t offset_)
{
FileInfo *fi = reinterpret_cast<FileInfo*>(ffi_->fh);
return l::read_buf(fi->fd,
bufp_,
size_,
offset_);
}
int
read_buf_null(const fuse_file_info_t *ffi_,
fuse_bufvec **bufp_,
size_t size_,
off_t offset_)
{
void *mem;
struct fuse_bufvec *buf;
buf = (struct fuse_bufvec*)malloc(sizeof(struct fuse_bufvec));
if(buf == NULL)
return -ENOMEM;
mem = (void*)calloc(1,size_);
if(mem == NULL)
{
free(buf);
return -ENOMEM;
}
*buf = FUSE_BUFVEC_INIT(size_);
buf->buf[0].mem = mem;
*bufp_ = buf;
return 0;
}
}