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/*-
* Copyright (c) 2010 Isilon Systems, Inc.
* Copyright (c) 2010 iX Systems, Inc.
* Copyright (c) 2010 Panasas, Inc.
* Copyright (c) 2013-2016 Mellanox Technologies, Ltd.
* All rights reserved.
*
* 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 unmodified, 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 ``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 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_FS_H_
#define _LINUX_FS_H_
#include <sys/cdefs.h>
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/vnode.h>
#include <sys/file.h>
#include <sys/filedesc.h>
#include <linux/types.h>
#include <linux/wait.h>
#include <linux/semaphore.h>
struct module;
struct kiocb;
struct iovec;
struct dentry;
struct page;
struct file_lock;
struct pipe_inode_info;
struct vm_area_struct;
struct poll_table_struct;
struct files_struct;
#define inode vnode
#define i_cdev v_rdev
#define S_IRUGO (S_IRUSR | S_IRGRP | S_IROTH)
#define S_IWUGO (S_IWUSR | S_IWGRP | S_IWOTH)
typedef struct files_struct *fl_owner_t;
struct dentry {
struct inode *d_inode;
};
struct file_operations;
struct linux_file {
struct file *_file;
const struct file_operations *f_op;
void *private_data;
int f_flags;
int f_mode; /* Just starting mode. */
struct dentry *f_dentry;
struct dentry f_dentry_store;
struct selinfo f_selinfo;
struct sigio *f_sigio;
struct vnode *f_vnode;
};
#define file linux_file
#define fasync_struct sigio *
#define fasync_helper(fd, filp, on, queue) \
({ \
if ((on)) \
*(queue) = &(filp)->f_sigio; \
else \
*(queue) = NULL; \
0; \
})
#define kill_fasync(queue, sig, pollstat) \
do { \
if (*(queue) != NULL) \
pgsigio(*(queue), (sig), 0); \
} while (0)
typedef int (*filldir_t)(void *, const char *, int, loff_t, u64, unsigned);
struct file_operations {
struct module *owner;
ssize_t (*read)(struct file *, char __user *, size_t, loff_t *);
ssize_t (*write)(struct file *, const char __user *, size_t, loff_t *);
unsigned int (*poll) (struct file *, struct poll_table_struct *);
long (*unlocked_ioctl)(struct file *, unsigned int, unsigned long);
int (*mmap)(struct file *, struct vm_area_struct *);
int (*open)(struct inode *, struct file *);
int (*release)(struct inode *, struct file *);
int (*fasync)(int, struct file *, int);
/* Although not supported in FreeBSD, to align with Linux code
* we are adding llseek() only when it is mapped to no_llseek which returns
* an illegal seek error
*/
loff_t (*llseek)(struct file *, loff_t, int);
#if 0
/* We do not support these methods. Don't permit them to compile. */
loff_t (*llseek)(struct file *, loff_t, int);
ssize_t (*aio_read)(struct kiocb *, const struct iovec *,
unsigned long, loff_t);
ssize_t (*aio_write)(struct kiocb *, const struct iovec *,
unsigned long, loff_t);
int (*readdir)(struct file *, void *, filldir_t);
int (*ioctl)(struct inode *, struct file *, unsigned int,
unsigned long);
long (*compat_ioctl)(struct file *, unsigned int, unsigned long);
int (*flush)(struct file *, fl_owner_t id);
int (*fsync)(struct file *, struct dentry *, int datasync);
int (*aio_fsync)(struct kiocb *, int datasync);
int (*lock)(struct file *, int, struct file_lock *);
ssize_t (*sendpage)(struct file *, struct page *, int, size_t,
loff_t *, int);
unsigned long (*get_unmapped_area)(struct file *, unsigned long,
unsigned long, unsigned long, unsigned long);
int (*check_flags)(int);
int (*flock)(struct file *, int, struct file_lock *);
ssize_t (*splice_write)(struct pipe_inode_info *, struct file *,
loff_t *, size_t, unsigned int);
ssize_t (*splice_read)(struct file *, loff_t *,
struct pipe_inode_info *, size_t, unsigned int);
int (*setlease)(struct file *, long, struct file_lock **);
#endif
};
#define fops_get(fops) (fops)
#define FMODE_READ FREAD
#define FMODE_WRITE FWRITE
#define FMODE_EXEC FEXEC
int __register_chrdev(unsigned int major, unsigned int baseminor,
unsigned int count, const char *name,
const struct file_operations *fops);
int __register_chrdev_p(unsigned int major, unsigned int baseminor,
unsigned int count, const char *name,
const struct file_operations *fops, uid_t uid,
gid_t gid, int mode);
void __unregister_chrdev(unsigned int major, unsigned int baseminor,
unsigned int count, const char *name);
static inline void
unregister_chrdev(unsigned int major, const char *name)
{
__unregister_chrdev(major, 0, 256, name);
}
static inline int
register_chrdev(unsigned int major, const char *name,
const struct file_operations *fops)
{
return (__register_chrdev(major, 0, 256, name, fops));
}
static inline int
register_chrdev_p(unsigned int major, const char *name,
const struct file_operations *fops, uid_t uid, gid_t gid, int mode)
{
return (__register_chrdev_p(major, 0, 256, name, fops, uid, gid, mode));
}
static inline int
register_chrdev_region(dev_t dev, unsigned range, const char *name)
{
return 0;
}
static inline void
unregister_chrdev_region(dev_t dev, unsigned range)
{
return;
}
static inline int
alloc_chrdev_region(dev_t *dev, unsigned baseminor, unsigned count,
const char *name)
{
return 0;
}
/* No current support for seek op in FreeBSD */
static inline int
nonseekable_open(struct inode *inode, struct file *filp)
{
return 0;
}
static inline dev_t
iminor(struct inode *inode)
{
return (minor(dev2unit(inode->v_rdev)));
}
static inline struct inode *
igrab(struct inode *inode)
{
int error;
error = vget(inode, 0, curthread);
if (error)
return (NULL);
return (inode);
}
static inline void
iput(struct inode *inode)
{
vrele(inode);
}
static inline loff_t
no_llseek(struct file *file, loff_t offset, int whence)
{
return -ESPIPE;
}
#endif /* _LINUX_FS_H_ */
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