/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2016-2018, Matthew Macy <mmacy@freebsd.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _LINUX_SEQ_FILE_H_
#define _LINUX_SEQ_FILE_H_
#include <linux/types.h>
#include <linux/fs.h>
#include <sys/sbuf.h>
#undef file
#define inode vnode
#define DEFINE_SHOW_ATTRIBUTE(__name) \
static int __name ## _open(struct inode *inode, struct linux_file *file) \
{ \
return single_open(file, __name ## _show, inode->i_private); \
} \
\
static const struct file_operations __name ## _fops = { \
.owner = THIS_MODULE, \
.open = __name ## _open, \
.read = seq_read, \
.llseek = seq_lseek, \
.release = single_release, \
}
struct seq_operations;
struct seq_file {
struct sbuf *buf;
const struct seq_operations *op;
const struct linux_file *file;
void *private;
};
struct seq_operations {
void * (*start) (struct seq_file *m, off_t *pos);
void (*stop) (struct seq_file *m, void *v);
void * (*next) (struct seq_file *m, void *v, off_t *pos);
int (*show) (struct seq_file *m, void *v);
};
ssize_t seq_read(struct linux_file *, char *, size_t, off_t *);
int seq_write(struct seq_file *seq, const void *data, size_t len);
int seq_open(struct linux_file *f, const struct seq_operations *op);
int seq_release(struct inode *inode, struct linux_file *file);
off_t seq_lseek(struct linux_file *file, off_t offset, int whence);
int single_open(struct linux_file *, int (*)(struct seq_file *, void *), void *);
int single_release(struct inode *, struct linux_file *);
#define seq_printf(m, fmt, ...) sbuf_printf((m)->buf, (fmt), ##__VA_ARGS__)
#define seq_puts(m, str) sbuf_printf((m)->buf, str)
#define seq_putc(m, str) sbuf_putc((m)->buf, str)
#define file linux_file
#endif /* _LINUX_SEQ_FILE_H_ */
