18d59ecb2SHans Petter Selasky /*- 28d59ecb2SHans Petter Selasky * Copyright (c) 2010 Isilon Systems, Inc. 38d59ecb2SHans Petter Selasky * Copyright (c) 2010 iX Systems, Inc. 48d59ecb2SHans Petter Selasky * Copyright (c) 2010 Panasas, Inc. 51125dbc0SHans Petter Selasky * Copyright (c) 2013-2016 Mellanox Technologies, Ltd. 68d59ecb2SHans Petter Selasky * All rights reserved. 78d59ecb2SHans Petter Selasky * 88d59ecb2SHans Petter Selasky * Redistribution and use in source and binary forms, with or without 98d59ecb2SHans Petter Selasky * modification, are permitted provided that the following conditions 108d59ecb2SHans Petter Selasky * are met: 118d59ecb2SHans Petter Selasky * 1. Redistributions of source code must retain the above copyright 128d59ecb2SHans Petter Selasky * notice unmodified, this list of conditions, and the following 138d59ecb2SHans Petter Selasky * disclaimer. 148d59ecb2SHans Petter Selasky * 2. Redistributions in binary form must reproduce the above copyright 158d59ecb2SHans Petter Selasky * notice, this list of conditions and the following disclaimer in the 168d59ecb2SHans Petter Selasky * documentation and/or other materials provided with the distribution. 178d59ecb2SHans Petter Selasky * 188d59ecb2SHans Petter Selasky * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 198d59ecb2SHans Petter Selasky * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 208d59ecb2SHans Petter Selasky * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 218d59ecb2SHans Petter Selasky * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 228d59ecb2SHans Petter Selasky * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 238d59ecb2SHans Petter Selasky * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 248d59ecb2SHans Petter Selasky * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 258d59ecb2SHans Petter Selasky * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 268d59ecb2SHans Petter Selasky * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 278d59ecb2SHans Petter Selasky * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 288d59ecb2SHans Petter Selasky * 298d59ecb2SHans Petter Selasky * $FreeBSD$ 308d59ecb2SHans Petter Selasky */ 318d59ecb2SHans Petter Selasky #ifndef _LINUX_FS_H_ 328d59ecb2SHans Petter Selasky #define _LINUX_FS_H_ 338d59ecb2SHans Petter Selasky 348d59ecb2SHans Petter Selasky #include <sys/cdefs.h> 358d59ecb2SHans Petter Selasky #include <sys/param.h> 368d59ecb2SHans Petter Selasky #include <sys/systm.h> 378d59ecb2SHans Petter Selasky #include <sys/conf.h> 388d59ecb2SHans Petter Selasky #include <sys/vnode.h> 398d59ecb2SHans Petter Selasky #include <sys/file.h> 408d59ecb2SHans Petter Selasky #include <sys/filedesc.h> 418d59ecb2SHans Petter Selasky #include <linux/types.h> 428d59ecb2SHans Petter Selasky #include <linux/wait.h> 438d59ecb2SHans Petter Selasky #include <linux/semaphore.h> 44a6b28ee0SHans Petter Selasky #include <linux/spinlock.h> 458d59ecb2SHans Petter Selasky 468d59ecb2SHans Petter Selasky struct module; 478d59ecb2SHans Petter Selasky struct kiocb; 488d59ecb2SHans Petter Selasky struct iovec; 498d59ecb2SHans Petter Selasky struct dentry; 508d59ecb2SHans Petter Selasky struct page; 518d59ecb2SHans Petter Selasky struct file_lock; 528d59ecb2SHans Petter Selasky struct pipe_inode_info; 538d59ecb2SHans Petter Selasky struct vm_area_struct; 548d59ecb2SHans Petter Selasky struct poll_table_struct; 558d59ecb2SHans Petter Selasky struct files_struct; 567e1a02baSMark Johnston struct pfs_node; 578d59ecb2SHans Petter Selasky 588d59ecb2SHans Petter Selasky #define inode vnode 598d59ecb2SHans Petter Selasky #define i_cdev v_rdev 607e1a02baSMark Johnston #define i_private v_data 618d59ecb2SHans Petter Selasky 628d59ecb2SHans Petter Selasky #define S_IRUGO (S_IRUSR | S_IRGRP | S_IROTH) 638d59ecb2SHans Petter Selasky #define S_IWUGO (S_IWUSR | S_IWGRP | S_IWOTH) 648d59ecb2SHans Petter Selasky 658d59ecb2SHans Petter Selasky 668d59ecb2SHans Petter Selasky typedef struct files_struct *fl_owner_t; 678d59ecb2SHans Petter Selasky 688d59ecb2SHans Petter Selasky struct dentry { 698d59ecb2SHans Petter Selasky struct inode *d_inode; 707e1a02baSMark Johnston struct pfs_node *d_pfs_node; 718d59ecb2SHans Petter Selasky }; 728d59ecb2SHans Petter Selasky 738d59ecb2SHans Petter Selasky struct file_operations; 748d59ecb2SHans Petter Selasky 756dec7efaSHans Petter Selasky struct linux_file_wait_queue { 766dec7efaSHans Petter Selasky struct wait_queue wq; 776dec7efaSHans Petter Selasky struct wait_queue_head *wqh; 786dec7efaSHans Petter Selasky atomic_t state; 796dec7efaSHans Petter Selasky #define LINUX_FWQ_STATE_INIT 0 806dec7efaSHans Petter Selasky #define LINUX_FWQ_STATE_NOT_READY 1 816dec7efaSHans Petter Selasky #define LINUX_FWQ_STATE_QUEUED 2 826dec7efaSHans Petter Selasky #define LINUX_FWQ_STATE_READY 3 836dec7efaSHans Petter Selasky #define LINUX_FWQ_STATE_MAX 4 846dec7efaSHans Petter Selasky }; 856dec7efaSHans Petter Selasky 868d59ecb2SHans Petter Selasky struct linux_file { 878d59ecb2SHans Petter Selasky struct file *_file; 888d59ecb2SHans Petter Selasky const struct file_operations *f_op; 898d59ecb2SHans Petter Selasky void *private_data; 908d59ecb2SHans Petter Selasky int f_flags; 918d59ecb2SHans Petter Selasky int f_mode; /* Just starting mode. */ 928d59ecb2SHans Petter Selasky struct dentry *f_dentry; 938d59ecb2SHans Petter Selasky struct dentry f_dentry_store; 948d59ecb2SHans Petter Selasky struct selinfo f_selinfo; 958d59ecb2SHans Petter Selasky struct sigio *f_sigio; 968d59ecb2SHans Petter Selasky struct vnode *f_vnode; 97dac6b88aSMark Johnston #define f_inode f_vnode 98f5a9867bSHans Petter Selasky volatile u_int f_count; 99a6b28ee0SHans Petter Selasky 100dac6b88aSMark Johnston /* anonymous shmem object */ 101dac6b88aSMark Johnston vm_object_t f_shmem; 102dac6b88aSMark Johnston 103a6b28ee0SHans Petter Selasky /* kqfilter support */ 104a6b28ee0SHans Petter Selasky int f_kqflags; 105a6b28ee0SHans Petter Selasky #define LINUX_KQ_FLAG_HAS_READ (1 << 0) 106a6b28ee0SHans Petter Selasky #define LINUX_KQ_FLAG_HAS_WRITE (1 << 1) 107a6b28ee0SHans Petter Selasky #define LINUX_KQ_FLAG_NEED_READ (1 << 2) 108a6b28ee0SHans Petter Selasky #define LINUX_KQ_FLAG_NEED_WRITE (1 << 3) 109a6b28ee0SHans Petter Selasky /* protects f_selinfo.si_note */ 110a6b28ee0SHans Petter Selasky spinlock_t f_kqlock; 1116dec7efaSHans Petter Selasky struct linux_file_wait_queue f_wait_queue; 1128d59ecb2SHans Petter Selasky }; 1138d59ecb2SHans Petter Selasky 1148d59ecb2SHans Petter Selasky #define file linux_file 1158d59ecb2SHans Petter Selasky #define fasync_struct sigio * 1168d59ecb2SHans Petter Selasky 1178d59ecb2SHans Petter Selasky #define fasync_helper(fd, filp, on, queue) \ 1188d59ecb2SHans Petter Selasky ({ \ 1198d59ecb2SHans Petter Selasky if ((on)) \ 1208d59ecb2SHans Petter Selasky *(queue) = &(filp)->f_sigio; \ 1218d59ecb2SHans Petter Selasky else \ 1228d59ecb2SHans Petter Selasky *(queue) = NULL; \ 1238d59ecb2SHans Petter Selasky 0; \ 1248d59ecb2SHans Petter Selasky }) 1258d59ecb2SHans Petter Selasky 1268d59ecb2SHans Petter Selasky #define kill_fasync(queue, sig, pollstat) \ 1278d59ecb2SHans Petter Selasky do { \ 1288d59ecb2SHans Petter Selasky if (*(queue) != NULL) \ 1298d59ecb2SHans Petter Selasky pgsigio(*(queue), (sig), 0); \ 1308d59ecb2SHans Petter Selasky } while (0) 1318d59ecb2SHans Petter Selasky 1328d59ecb2SHans Petter Selasky typedef int (*filldir_t)(void *, const char *, int, loff_t, u64, unsigned); 1338d59ecb2SHans Petter Selasky 1348d59ecb2SHans Petter Selasky struct file_operations { 1358d59ecb2SHans Petter Selasky struct module *owner; 1368d59ecb2SHans Petter Selasky ssize_t (*read)(struct file *, char __user *, size_t, loff_t *); 1378d59ecb2SHans Petter Selasky ssize_t (*write)(struct file *, const char __user *, size_t, loff_t *); 1388d59ecb2SHans Petter Selasky unsigned int (*poll) (struct file *, struct poll_table_struct *); 1398d59ecb2SHans Petter Selasky long (*unlocked_ioctl)(struct file *, unsigned int, unsigned long); 1408d59ecb2SHans Petter Selasky int (*mmap)(struct file *, struct vm_area_struct *); 1418d59ecb2SHans Petter Selasky int (*open)(struct inode *, struct file *); 1428d59ecb2SHans Petter Selasky int (*release)(struct inode *, struct file *); 1438d59ecb2SHans Petter Selasky int (*fasync)(int, struct file *, int); 1448d59ecb2SHans Petter Selasky 1458d59ecb2SHans Petter Selasky /* Although not supported in FreeBSD, to align with Linux code 1468d59ecb2SHans Petter Selasky * we are adding llseek() only when it is mapped to no_llseek which returns 1478d59ecb2SHans Petter Selasky * an illegal seek error 1488d59ecb2SHans Petter Selasky */ 1498d59ecb2SHans Petter Selasky loff_t (*llseek)(struct file *, loff_t, int); 1508d59ecb2SHans Petter Selasky #if 0 1518d59ecb2SHans Petter Selasky /* We do not support these methods. Don't permit them to compile. */ 1528d59ecb2SHans Petter Selasky loff_t (*llseek)(struct file *, loff_t, int); 1538d59ecb2SHans Petter Selasky ssize_t (*aio_read)(struct kiocb *, const struct iovec *, 1548d59ecb2SHans Petter Selasky unsigned long, loff_t); 1558d59ecb2SHans Petter Selasky ssize_t (*aio_write)(struct kiocb *, const struct iovec *, 1568d59ecb2SHans Petter Selasky unsigned long, loff_t); 1578d59ecb2SHans Petter Selasky int (*readdir)(struct file *, void *, filldir_t); 1588d59ecb2SHans Petter Selasky int (*ioctl)(struct inode *, struct file *, unsigned int, 1598d59ecb2SHans Petter Selasky unsigned long); 1608d59ecb2SHans Petter Selasky long (*compat_ioctl)(struct file *, unsigned int, unsigned long); 1618d59ecb2SHans Petter Selasky int (*flush)(struct file *, fl_owner_t id); 1628d59ecb2SHans Petter Selasky int (*fsync)(struct file *, struct dentry *, int datasync); 1638d59ecb2SHans Petter Selasky int (*aio_fsync)(struct kiocb *, int datasync); 1648d59ecb2SHans Petter Selasky int (*lock)(struct file *, int, struct file_lock *); 1658d59ecb2SHans Petter Selasky ssize_t (*sendpage)(struct file *, struct page *, int, size_t, 1668d59ecb2SHans Petter Selasky loff_t *, int); 1678d59ecb2SHans Petter Selasky unsigned long (*get_unmapped_area)(struct file *, unsigned long, 1688d59ecb2SHans Petter Selasky unsigned long, unsigned long, unsigned long); 1698d59ecb2SHans Petter Selasky int (*check_flags)(int); 1708d59ecb2SHans Petter Selasky int (*flock)(struct file *, int, struct file_lock *); 1718d59ecb2SHans Petter Selasky ssize_t (*splice_write)(struct pipe_inode_info *, struct file *, 1728d59ecb2SHans Petter Selasky loff_t *, size_t, unsigned int); 1738d59ecb2SHans Petter Selasky ssize_t (*splice_read)(struct file *, loff_t *, 1748d59ecb2SHans Petter Selasky struct pipe_inode_info *, size_t, unsigned int); 1758d59ecb2SHans Petter Selasky int (*setlease)(struct file *, long, struct file_lock **); 1768d59ecb2SHans Petter Selasky #endif 1778d59ecb2SHans Petter Selasky }; 1788d59ecb2SHans Petter Selasky #define fops_get(fops) (fops) 179dac6b88aSMark Johnston #define replace_fops(f, fops) ((f)->f_op = (fops)) 1808d59ecb2SHans Petter Selasky 1818d59ecb2SHans Petter Selasky #define FMODE_READ FREAD 1828d59ecb2SHans Petter Selasky #define FMODE_WRITE FWRITE 1838d59ecb2SHans Petter Selasky #define FMODE_EXEC FEXEC 1848d59ecb2SHans Petter Selasky 1851125dbc0SHans Petter Selasky int __register_chrdev(unsigned int major, unsigned int baseminor, 1861125dbc0SHans Petter Selasky unsigned int count, const char *name, 1871125dbc0SHans Petter Selasky const struct file_operations *fops); 1881125dbc0SHans Petter Selasky int __register_chrdev_p(unsigned int major, unsigned int baseminor, 1891125dbc0SHans Petter Selasky unsigned int count, const char *name, 1901125dbc0SHans Petter Selasky const struct file_operations *fops, uid_t uid, 1911125dbc0SHans Petter Selasky gid_t gid, int mode); 1921125dbc0SHans Petter Selasky void __unregister_chrdev(unsigned int major, unsigned int baseminor, 1931125dbc0SHans Petter Selasky unsigned int count, const char *name); 1941125dbc0SHans Petter Selasky 1951125dbc0SHans Petter Selasky static inline void 1961125dbc0SHans Petter Selasky unregister_chrdev(unsigned int major, const char *name) 1971125dbc0SHans Petter Selasky { 1981125dbc0SHans Petter Selasky 1991125dbc0SHans Petter Selasky __unregister_chrdev(major, 0, 256, name); 2001125dbc0SHans Petter Selasky } 2011125dbc0SHans Petter Selasky 2021125dbc0SHans Petter Selasky static inline int 2031125dbc0SHans Petter Selasky register_chrdev(unsigned int major, const char *name, 2041125dbc0SHans Petter Selasky const struct file_operations *fops) 2051125dbc0SHans Petter Selasky { 2061125dbc0SHans Petter Selasky 2071125dbc0SHans Petter Selasky return (__register_chrdev(major, 0, 256, name, fops)); 2081125dbc0SHans Petter Selasky } 2091125dbc0SHans Petter Selasky 2101125dbc0SHans Petter Selasky static inline int 2111125dbc0SHans Petter Selasky register_chrdev_p(unsigned int major, const char *name, 2121125dbc0SHans Petter Selasky const struct file_operations *fops, uid_t uid, gid_t gid, int mode) 2131125dbc0SHans Petter Selasky { 2141125dbc0SHans Petter Selasky 2151125dbc0SHans Petter Selasky return (__register_chrdev_p(major, 0, 256, name, fops, uid, gid, mode)); 2161125dbc0SHans Petter Selasky } 2171125dbc0SHans Petter Selasky 2188d59ecb2SHans Petter Selasky static inline int 2198d59ecb2SHans Petter Selasky register_chrdev_region(dev_t dev, unsigned range, const char *name) 2208d59ecb2SHans Petter Selasky { 2218d59ecb2SHans Petter Selasky 2228d59ecb2SHans Petter Selasky return 0; 2238d59ecb2SHans Petter Selasky } 2248d59ecb2SHans Petter Selasky 2258d59ecb2SHans Petter Selasky static inline void 2268d59ecb2SHans Petter Selasky unregister_chrdev_region(dev_t dev, unsigned range) 2278d59ecb2SHans Petter Selasky { 2288d59ecb2SHans Petter Selasky 2298d59ecb2SHans Petter Selasky return; 2308d59ecb2SHans Petter Selasky } 2318d59ecb2SHans Petter Selasky 2328d59ecb2SHans Petter Selasky static inline int 2338d59ecb2SHans Petter Selasky alloc_chrdev_region(dev_t *dev, unsigned baseminor, unsigned count, 2348d59ecb2SHans Petter Selasky const char *name) 2358d59ecb2SHans Petter Selasky { 2368d59ecb2SHans Petter Selasky 2378d59ecb2SHans Petter Selasky return 0; 2388d59ecb2SHans Petter Selasky } 2398d59ecb2SHans Petter Selasky 2408d59ecb2SHans Petter Selasky /* No current support for seek op in FreeBSD */ 2418d59ecb2SHans Petter Selasky static inline int 2428d59ecb2SHans Petter Selasky nonseekable_open(struct inode *inode, struct file *filp) 2438d59ecb2SHans Petter Selasky { 2448d59ecb2SHans Petter Selasky return 0; 2458d59ecb2SHans Petter Selasky } 2468d59ecb2SHans Petter Selasky 2472b79a966SHans Petter Selasky extern unsigned int linux_iminor(struct inode *); 2482b79a966SHans Petter Selasky #define iminor(...) linux_iminor(__VA_ARGS__) 2498d59ecb2SHans Petter Selasky 250f5a9867bSHans Petter Selasky static inline struct linux_file * 251f5a9867bSHans Petter Selasky get_file(struct linux_file *f) 252f5a9867bSHans Petter Selasky { 253f5a9867bSHans Petter Selasky 254f5a9867bSHans Petter Selasky refcount_acquire(f->_file == NULL ? &f->f_count : &f->_file->f_count); 255f5a9867bSHans Petter Selasky return (f); 256f5a9867bSHans Petter Selasky } 257f5a9867bSHans Petter Selasky 2588d59ecb2SHans Petter Selasky static inline struct inode * 2598d59ecb2SHans Petter Selasky igrab(struct inode *inode) 2608d59ecb2SHans Petter Selasky { 2618d59ecb2SHans Petter Selasky int error; 2628d59ecb2SHans Petter Selasky 2638d59ecb2SHans Petter Selasky error = vget(inode, 0, curthread); 2648d59ecb2SHans Petter Selasky if (error) 2658d59ecb2SHans Petter Selasky return (NULL); 2668d59ecb2SHans Petter Selasky 2678d59ecb2SHans Petter Selasky return (inode); 2688d59ecb2SHans Petter Selasky } 2698d59ecb2SHans Petter Selasky 2708d59ecb2SHans Petter Selasky static inline void 2718d59ecb2SHans Petter Selasky iput(struct inode *inode) 2728d59ecb2SHans Petter Selasky { 2738d59ecb2SHans Petter Selasky 2748d59ecb2SHans Petter Selasky vrele(inode); 2758d59ecb2SHans Petter Selasky } 2768d59ecb2SHans Petter Selasky 2778d59ecb2SHans Petter Selasky static inline loff_t 2788d59ecb2SHans Petter Selasky no_llseek(struct file *file, loff_t offset, int whence) 2798d59ecb2SHans Petter Selasky { 2804eb1bcfcSMark Johnston 2814eb1bcfcSMark Johnston return (-ESPIPE); 2824eb1bcfcSMark Johnston } 2834eb1bcfcSMark Johnston 2844eb1bcfcSMark Johnston static inline loff_t 2854eb1bcfcSMark Johnston noop_llseek(struct linux_file *file, loff_t offset, int whence) 2864eb1bcfcSMark Johnston { 2874eb1bcfcSMark Johnston 2884eb1bcfcSMark Johnston return (file->_file->f_offset); 2898d59ecb2SHans Petter Selasky } 2908d59ecb2SHans Petter Selasky 2918d59ecb2SHans Petter Selasky #endif /* _LINUX_FS_H_ */ 292