From e5fd91f1ef340da553f7a79da9540c3db711c937 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Andr=C3=A9=20Fabian=20Silva=20Delgado?= Date: Tue, 8 Sep 2015 01:01:14 -0300 Subject: Linux-libre 4.2-gnu --- fs/aufs/file.h | 291 --------------------------------------------------------- 1 file changed, 291 deletions(-) delete mode 100644 fs/aufs/file.h (limited to 'fs/aufs/file.h') diff --git a/fs/aufs/file.h b/fs/aufs/file.h deleted file mode 100644 index 10ede169f..000000000 --- a/fs/aufs/file.h +++ /dev/null @@ -1,291 +0,0 @@ -/* - * Copyright (C) 2005-2015 Junjiro R. Okajima - * - * This program, aufs is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see . - */ - -/* - * file operations - */ - -#ifndef __AUFS_FILE_H__ -#define __AUFS_FILE_H__ - -#ifdef __KERNEL__ - -#include -#include -#include -#include "rwsem.h" - -struct au_branch; -struct au_hfile { - struct file *hf_file; - struct au_branch *hf_br; -}; - -struct au_vdir; -struct au_fidir { - aufs_bindex_t fd_bbot; - aufs_bindex_t fd_nent; - struct au_vdir *fd_vdir_cache; - struct au_hfile fd_hfile[]; -}; - -static inline int au_fidir_sz(int nent) -{ - AuDebugOn(nent < 0); - return sizeof(struct au_fidir) + sizeof(struct au_hfile) * nent; -} - -struct au_finfo { - atomic_t fi_generation; - - struct au_rwsem fi_rwsem; - aufs_bindex_t fi_btop; - - /* do not union them */ - struct { /* for non-dir */ - struct au_hfile fi_htop; - atomic_t fi_mmapped; - }; - struct au_fidir *fi_hdir; /* for dir only */ - - struct hlist_node fi_hlist; - struct file *fi_file; /* very ugly */ -} ____cacheline_aligned_in_smp; - -/* ---------------------------------------------------------------------- */ - -/* file.c */ -extern const struct address_space_operations aufs_aop; -unsigned int au_file_roflags(unsigned int flags); -struct file *au_h_open(struct dentry *dentry, aufs_bindex_t bindex, int flags, - struct file *file, int force_wr); -struct au_do_open_args { - int no_lock; - int (*open)(struct file *file, int flags, - struct file *h_file); - struct au_fidir *fidir; - struct file *h_file; -}; -int au_do_open(struct file *file, struct au_do_open_args *args); -int au_reopen_nondir(struct file *file); -struct au_pin; -int au_ready_to_write(struct file *file, loff_t len, struct au_pin *pin); -int au_reval_and_lock_fdi(struct file *file, int (*reopen)(struct file *file), - int wlock); -int au_do_flush(struct file *file, fl_owner_t id, - int (*flush)(struct file *file, fl_owner_t id)); - -/* poll.c */ -#ifdef CONFIG_AUFS_POLL -unsigned int aufs_poll(struct file *file, poll_table *wait); -#endif - -#ifdef CONFIG_AUFS_BR_HFSPLUS -/* hfsplus.c */ -struct file *au_h_open_pre(struct dentry *dentry, aufs_bindex_t bindex, - int force_wr); -void au_h_open_post(struct dentry *dentry, aufs_bindex_t bindex, - struct file *h_file); -#else -AuStub(struct file *, au_h_open_pre, return NULL, struct dentry *dentry, - aufs_bindex_t bindex, int force_wr) -AuStubVoid(au_h_open_post, struct dentry *dentry, aufs_bindex_t bindex, - struct file *h_file); -#endif - -/* f_op.c */ -extern const struct file_operations aufs_file_fop; -int au_do_open_nondir(struct file *file, int flags, struct file *h_file); -int aufs_release_nondir(struct inode *inode __maybe_unused, struct file *file); -struct file *au_read_pre(struct file *file, int keep_fi); - -/* finfo.c */ -void au_hfput(struct au_hfile *hf, struct file *file); -void au_set_h_fptr(struct file *file, aufs_bindex_t bindex, - struct file *h_file); - -void au_update_figen(struct file *file); -struct au_fidir *au_fidir_alloc(struct super_block *sb); -int au_fidir_realloc(struct au_finfo *finfo, int nbr); - -void au_fi_init_once(void *_fi); -void au_finfo_fin(struct file *file); -int au_finfo_init(struct file *file, struct au_fidir *fidir); - -/* ioctl.c */ -long aufs_ioctl_nondir(struct file *file, unsigned int cmd, unsigned long arg); -#ifdef CONFIG_COMPAT -long aufs_compat_ioctl_dir(struct file *file, unsigned int cmd, - unsigned long arg); -long aufs_compat_ioctl_nondir(struct file *file, unsigned int cmd, - unsigned long arg); -#endif - -/* ---------------------------------------------------------------------- */ - -static inline struct au_finfo *au_fi(struct file *file) -{ - return file->private_data; -} - -/* ---------------------------------------------------------------------- */ - -/* - * fi_read_lock, fi_write_lock, - * fi_read_unlock, fi_write_unlock, fi_downgrade_lock - */ -AuSimpleRwsemFuncs(fi, struct file *f, &au_fi(f)->fi_rwsem); - -#define FiMustNoWaiters(f) AuRwMustNoWaiters(&au_fi(f)->fi_rwsem) -#define FiMustAnyLock(f) AuRwMustAnyLock(&au_fi(f)->fi_rwsem) -#define FiMustWriteLock(f) AuRwMustWriteLock(&au_fi(f)->fi_rwsem) - -/* ---------------------------------------------------------------------- */ - -/* todo: hard/soft set? */ -static inline aufs_bindex_t au_fbstart(struct file *file) -{ - FiMustAnyLock(file); - return au_fi(file)->fi_btop; -} - -static inline aufs_bindex_t au_fbend_dir(struct file *file) -{ - FiMustAnyLock(file); - AuDebugOn(!au_fi(file)->fi_hdir); - return au_fi(file)->fi_hdir->fd_bbot; -} - -static inline struct au_vdir *au_fvdir_cache(struct file *file) -{ - FiMustAnyLock(file); - AuDebugOn(!au_fi(file)->fi_hdir); - return au_fi(file)->fi_hdir->fd_vdir_cache; -} - -static inline void au_set_fbstart(struct file *file, aufs_bindex_t bindex) -{ - FiMustWriteLock(file); - au_fi(file)->fi_btop = bindex; -} - -static inline void au_set_fbend_dir(struct file *file, aufs_bindex_t bindex) -{ - FiMustWriteLock(file); - AuDebugOn(!au_fi(file)->fi_hdir); - au_fi(file)->fi_hdir->fd_bbot = bindex; -} - -static inline void au_set_fvdir_cache(struct file *file, - struct au_vdir *vdir_cache) -{ - FiMustWriteLock(file); - AuDebugOn(!au_fi(file)->fi_hdir); - au_fi(file)->fi_hdir->fd_vdir_cache = vdir_cache; -} - -static inline struct file *au_hf_top(struct file *file) -{ - FiMustAnyLock(file); - AuDebugOn(au_fi(file)->fi_hdir); - return au_fi(file)->fi_htop.hf_file; -} - -static inline struct file *au_hf_dir(struct file *file, aufs_bindex_t bindex) -{ - FiMustAnyLock(file); - AuDebugOn(!au_fi(file)->fi_hdir); - return au_fi(file)->fi_hdir->fd_hfile[0 + bindex].hf_file; -} - -/* todo: memory barrier? */ -static inline unsigned int au_figen(struct file *f) -{ - return atomic_read(&au_fi(f)->fi_generation); -} - -static inline void au_set_mmapped(struct file *f) -{ - if (atomic_inc_return(&au_fi(f)->fi_mmapped)) - return; - pr_warn("fi_mmapped wrapped around\n"); - while (!atomic_inc_return(&au_fi(f)->fi_mmapped)) - ; -} - -static inline void au_unset_mmapped(struct file *f) -{ - atomic_dec(&au_fi(f)->fi_mmapped); -} - -static inline int au_test_mmapped(struct file *f) -{ - return atomic_read(&au_fi(f)->fi_mmapped); -} - -/* customize vma->vm_file */ - -static inline void au_do_vm_file_reset(struct vm_area_struct *vma, - struct file *file) -{ - struct file *f; - - f = vma->vm_file; - get_file(file); - vma->vm_file = file; - fput(f); -} - -#ifdef CONFIG_MMU -#define AuDbgVmRegion(file, vma) do {} while (0) - -static inline void au_vm_file_reset(struct vm_area_struct *vma, - struct file *file) -{ - au_do_vm_file_reset(vma, file); -} -#else -#define AuDbgVmRegion(file, vma) \ - AuDebugOn((vma)->vm_region && (vma)->vm_region->vm_file != (file)) - -static inline void au_vm_file_reset(struct vm_area_struct *vma, - struct file *file) -{ - struct file *f; - - au_do_vm_file_reset(vma, file); - f = vma->vm_region->vm_file; - get_file(file); - vma->vm_region->vm_file = file; - fput(f); -} -#endif /* CONFIG_MMU */ - -/* handle vma->vm_prfile */ -static inline void au_vm_prfile_set(struct vm_area_struct *vma, - struct file *file) -{ - get_file(file); - vma->vm_prfile = file; -#ifndef CONFIG_MMU - get_file(file); - vma->vm_region->vm_prfile = file; -#endif -} - -#endif /* __KERNEL__ */ -#endif /* __AUFS_FILE_H__ */ -- cgit v1.2.3