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/*
* UVT - Userspace Virtual Terminals
*
* Copyright (c) 2011-2013 David Herrmann <dh.herrmann@gmail.com>
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* Userspace Virtual Terminals Internals
* Internal header of the UVT implementation.
*/
#ifndef UVT_INTERNAL_H
#define UVT_INTERNAL_H
#include <eloop.h>
#include <stdlib.h>
#include <uvt.h>
#include "shl_array.h"
#include "shl_dlist.h"
#include "shl_hook.h"
#include "shl_llog.h"
#include <fuse/fuse.h>
#include <fuse/fuse_common.h>
#include <fuse/fuse_lowlevel.h>
#include <fuse/fuse_opt.h>
#include <fuse/cuse_lowlevel.h>
/* contexts */
struct uvt_ctx {
unsigned long ref;
llog_submit_t llog;
void *llog_data;
struct ev_eloop *eloop;
char *cuse_file;
unsigned int major;
unsigned int minor_offset;
struct shl_array *minors;
};
/* character devices */
struct uvt_cdev {
unsigned long ref;
struct uvt_ctx *ctx;
llog_submit_t llog;
void *llog_data;
int error;
struct shl_hook *hook;
struct fuse_session *session;
int fd;
struct fuse_chan *channel;
struct ev_fd *efd;
size_t bufsize;
char *buf;
struct shl_dlist clients;
};
/* client sessions */
struct uvt_client {
unsigned long ref;
struct shl_dlist list;
struct uvt_cdev *cdev;
llog_submit_t llog;
void *llog_data;
struct fuse_pollhandle *ph;
struct shl_dlist waiters;
const struct uvt_vt_ops *vt;
void *vt_data;
bool vt_locked;
bool vt_in_unlock;
unsigned int vt_retry;
};
void uvt_client_cleanup(struct uvt_client *client);
int uvt_client_ll_open(struct uvt_client **out, struct uvt_cdev *cdev,
fuse_req_t req, struct fuse_file_info *fi);
void uvt_client_ll_release(fuse_req_t req, struct fuse_file_info *fi);
void uvt_client_ll_read(fuse_req_t req, size_t size, off_t off,
struct fuse_file_info *fi);
void uvt_client_ll_write(fuse_req_t req, const char *buf, size_t size,
off_t off, struct fuse_file_info *fi);
void uvt_client_ll_poll(fuse_req_t req, struct fuse_file_info *fi,
struct fuse_pollhandle *ph);
void uvt_client_ll_ioctl(fuse_req_t req, int cmd, void *arg,
struct fuse_file_info *fi, unsigned int flags,
const void *in_buf, size_t in_bufsz, size_t out_bufsz);
#endif /* UVT_INTERNAL_H */
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