249 lines
6.8 KiB
C
249 lines
6.8 KiB
C
/*-
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* Copyright (c) 2010 Isilon Systems, Inc.
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* Copyright (c) 2010 iX Systems, Inc.
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* Copyright (c) 2010 Panasas, Inc.
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* Copyright (c) 2013-2016 Mellanox Technologies, Ltd.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice unmodified, this list of conditions, and the following
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* disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _LINUX_FS_H_
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#define _LINUX_FS_H_
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#include <sys/cdefs.h>
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/conf.h>
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#include <sys/vnode.h>
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#include <sys/file.h>
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#include <sys/filedesc.h>
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#include <linux/types.h>
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#include <linux/wait.h>
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#include <linux/semaphore.h>
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struct module;
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struct kiocb;
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struct iovec;
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struct dentry;
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struct page;
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struct file_lock;
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struct pipe_inode_info;
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struct vm_area_struct;
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struct poll_table_struct;
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struct files_struct;
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#define inode vnode
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#define i_cdev v_rdev
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#define S_IRUGO (S_IRUSR | S_IRGRP | S_IROTH)
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#define S_IWUGO (S_IWUSR | S_IWGRP | S_IWOTH)
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typedef struct files_struct *fl_owner_t;
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struct dentry {
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struct inode *d_inode;
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};
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struct file_operations;
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struct linux_file {
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struct file *_file;
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const struct file_operations *f_op;
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void *private_data;
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int f_flags;
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int f_mode; /* Just starting mode. */
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struct dentry *f_dentry;
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struct dentry f_dentry_store;
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struct selinfo f_selinfo;
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struct sigio *f_sigio;
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struct vnode *f_vnode;
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};
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#define file linux_file
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#define fasync_struct sigio *
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#define fasync_helper(fd, filp, on, queue) \
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({ \
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if ((on)) \
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*(queue) = &(filp)->f_sigio; \
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else \
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*(queue) = NULL; \
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0; \
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})
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#define kill_fasync(queue, sig, pollstat) \
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do { \
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if (*(queue) != NULL) \
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pgsigio(*(queue), (sig), 0); \
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} while (0)
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typedef int (*filldir_t)(void *, const char *, int, loff_t, u64, unsigned);
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struct file_operations {
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struct module *owner;
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ssize_t (*read)(struct file *, char __user *, size_t, loff_t *);
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ssize_t (*write)(struct file *, const char __user *, size_t, loff_t *);
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unsigned int (*poll) (struct file *, struct poll_table_struct *);
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long (*unlocked_ioctl)(struct file *, unsigned int, unsigned long);
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int (*mmap)(struct file *, struct vm_area_struct *);
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int (*open)(struct inode *, struct file *);
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int (*release)(struct inode *, struct file *);
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int (*fasync)(int, struct file *, int);
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/* Although not supported in FreeBSD, to align with Linux code
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* we are adding llseek() only when it is mapped to no_llseek which returns
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* an illegal seek error
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*/
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loff_t (*llseek)(struct file *, loff_t, int);
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#if 0
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/* We do not support these methods. Don't permit them to compile. */
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loff_t (*llseek)(struct file *, loff_t, int);
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ssize_t (*aio_read)(struct kiocb *, const struct iovec *,
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unsigned long, loff_t);
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ssize_t (*aio_write)(struct kiocb *, const struct iovec *,
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unsigned long, loff_t);
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int (*readdir)(struct file *, void *, filldir_t);
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int (*ioctl)(struct inode *, struct file *, unsigned int,
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unsigned long);
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long (*compat_ioctl)(struct file *, unsigned int, unsigned long);
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int (*flush)(struct file *, fl_owner_t id);
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int (*fsync)(struct file *, struct dentry *, int datasync);
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int (*aio_fsync)(struct kiocb *, int datasync);
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int (*lock)(struct file *, int, struct file_lock *);
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ssize_t (*sendpage)(struct file *, struct page *, int, size_t,
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loff_t *, int);
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unsigned long (*get_unmapped_area)(struct file *, unsigned long,
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unsigned long, unsigned long, unsigned long);
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int (*check_flags)(int);
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int (*flock)(struct file *, int, struct file_lock *);
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ssize_t (*splice_write)(struct pipe_inode_info *, struct file *,
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loff_t *, size_t, unsigned int);
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ssize_t (*splice_read)(struct file *, loff_t *,
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struct pipe_inode_info *, size_t, unsigned int);
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int (*setlease)(struct file *, long, struct file_lock **);
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#endif
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};
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#define fops_get(fops) (fops)
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#define FMODE_READ FREAD
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#define FMODE_WRITE FWRITE
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#define FMODE_EXEC FEXEC
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int __register_chrdev(unsigned int major, unsigned int baseminor,
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unsigned int count, const char *name,
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const struct file_operations *fops);
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int __register_chrdev_p(unsigned int major, unsigned int baseminor,
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unsigned int count, const char *name,
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const struct file_operations *fops, uid_t uid,
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gid_t gid, int mode);
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void __unregister_chrdev(unsigned int major, unsigned int baseminor,
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unsigned int count, const char *name);
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static inline void
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unregister_chrdev(unsigned int major, const char *name)
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{
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__unregister_chrdev(major, 0, 256, name);
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}
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static inline int
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register_chrdev(unsigned int major, const char *name,
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const struct file_operations *fops)
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{
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return (__register_chrdev(major, 0, 256, name, fops));
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}
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static inline int
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register_chrdev_p(unsigned int major, const char *name,
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const struct file_operations *fops, uid_t uid, gid_t gid, int mode)
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{
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return (__register_chrdev_p(major, 0, 256, name, fops, uid, gid, mode));
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}
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static inline int
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register_chrdev_region(dev_t dev, unsigned range, const char *name)
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{
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return 0;
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}
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static inline void
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unregister_chrdev_region(dev_t dev, unsigned range)
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{
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return;
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}
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static inline int
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alloc_chrdev_region(dev_t *dev, unsigned baseminor, unsigned count,
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const char *name)
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{
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return 0;
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}
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/* No current support for seek op in FreeBSD */
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static inline int
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nonseekable_open(struct inode *inode, struct file *filp)
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{
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return 0;
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}
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static inline dev_t
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iminor(struct inode *inode)
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{
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return (minor(dev2unit(inode->v_rdev)));
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}
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static inline struct inode *
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igrab(struct inode *inode)
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{
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int error;
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error = vget(inode, 0, curthread);
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if (error)
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return (NULL);
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return (inode);
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}
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static inline void
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iput(struct inode *inode)
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{
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vrele(inode);
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}
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static inline loff_t
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no_llseek(struct file *file, loff_t offset, int whence)
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{
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return -ESPIPE;
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}
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#endif /* _LINUX_FS_H_ */
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