[mirror_ubuntu-artful-kernel.git] / fs / afs / internal.h

/* internal.h: internal AFS stuff
 *
 * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
 * Written by David Howells (dhowells@redhat.com)
 *
 * This program 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.
 */

#ifndef AFS_INTERNAL_H
#define AFS_INTERNAL_H

#include <linux/compiler.h>
#include <linux/kernel.h>
#include <linux/fs.h>
#include <linux/pagemap.h>

/*
 * debug tracing
 */
#define kenter(FMT, a...)	printk("==> %s("FMT")\n",__FUNCTION__ , ## a)
#define kleave(FMT, a...)	printk("<== %s()"FMT"\n",__FUNCTION__ , ## a)
#define kdebug(FMT, a...)	printk(FMT"\n" , ## a)
#define kproto(FMT, a...)	printk("### "FMT"\n" , ## a)
#define knet(FMT, a...)		printk(FMT"\n" , ## a)

#ifdef __KDEBUG
#define _enter(FMT, a...)	kenter(FMT , ## a)
#define _leave(FMT, a...)	kleave(FMT , ## a)
#define _debug(FMT, a...)	kdebug(FMT , ## a)
#define _proto(FMT, a...)	kproto(FMT , ## a)
#define _net(FMT, a...)		knet(FMT , ## a)
#else
#define _enter(FMT, a...)	do { } while(0)
#define _leave(FMT, a...)	do { } while(0)
#define _debug(FMT, a...)	do { } while(0)
#define _proto(FMT, a...)	do { } while(0)
#define _net(FMT, a...)		do { } while(0)
#endif

static inline void afs_discard_my_signals(void)
{
	while (signal_pending(current)) {
		siginfo_t sinfo;

		spin_lock_irq(&current->sighand->siglock);
		dequeue_signal(current,&current->blocked, &sinfo);
		spin_unlock_irq(&current->sighand->siglock);
	}
}

/*
 * cell.c
 */
extern struct rw_semaphore afs_proc_cells_sem;
extern struct list_head afs_proc_cells;
#ifdef AFS_CACHING_SUPPORT
extern struct cachefs_index_def afs_cache_cell_index_def;
#endif

/*
 * dir.c
 */
extern struct inode_operations afs_dir_inode_operations;
extern const struct file_operations afs_dir_file_operations;

/*
 * file.c
 */
extern struct address_space_operations afs_fs_aops;
extern struct inode_operations afs_file_inode_operations;

#ifdef AFS_CACHING_SUPPORT
extern int afs_cache_get_page_cookie(struct page *page,
				     struct cachefs_page **_page_cookie);
#endif

/*
 * inode.c
 */
extern int afs_iget(struct super_block *sb, struct afs_fid *fid,
		    struct inode **_inode);
extern int afs_inode_getattr(struct vfsmount *mnt, struct dentry *dentry,
			     struct kstat *stat);
extern void afs_clear_inode(struct inode *inode);

/*
 * key_afs.c
 */
#ifdef CONFIG_KEYS
extern int afs_key_register(void);
extern void afs_key_unregister(void);
#endif

/*
 * main.c
 */
#ifdef AFS_CACHING_SUPPORT
extern struct cachefs_netfs afs_cache_netfs;
#endif

/*
 * mntpt.c
 */
extern struct inode_operations afs_mntpt_inode_operations;
extern const struct file_operations afs_mntpt_file_operations;
extern struct afs_timer afs_mntpt_expiry_timer;
extern struct afs_timer_ops afs_mntpt_expiry_timer_ops;
extern unsigned long afs_mntpt_expiry_timeout;

extern int afs_mntpt_check_symlink(struct afs_vnode *vnode);

/*
 * super.c
 */
extern int afs_fs_init(void);
extern void afs_fs_exit(void);

#define AFS_CB_HASH_COUNT (PAGE_SIZE / sizeof(struct list_head))

extern struct list_head afs_cb_hash_tbl[];
extern spinlock_t afs_cb_hash_lock;

#define afs_cb_hash(SRV,FID) \
	afs_cb_hash_tbl[((unsigned long)(SRV) + \
			(FID)->vid + (FID)->vnode + (FID)->unique) % \
			AFS_CB_HASH_COUNT]

/*
 * proc.c
 */
extern int afs_proc_init(void);
extern void afs_proc_cleanup(void);
extern int afs_proc_cell_setup(struct afs_cell *cell);
extern void afs_proc_cell_remove(struct afs_cell *cell);

#endif /* AFS_INTERNAL_H */
Commit	Line	Data
1da177e4 LT	1	/* internal.h: internal AFS stuff
	2	*
	3	* Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
	4	* Written by David Howells (dhowells@redhat.com)
	5	*
	6	* This program is free software; you can redistribute it and/or
	7	* modify it under the terms of the GNU General Public License
	8	* as published by the Free Software Foundation; either version
	9	* 2 of the License, or (at your option) any later version.
	10	*/
	11
	12	#ifndef AFS_INTERNAL_H
	13	#define AFS_INTERNAL_H
	14
	15	#include <linux/compiler.h>
	16	#include <linux/kernel.h>
	17	#include <linux/fs.h>
	18	#include <linux/pagemap.h>
	19
	20	/*
	21	* debug tracing
	22	*/
	23	#define kenter(FMT, a...) printk("==> %s("FMT")\n",__FUNCTION__ , ## a)
	24	#define kleave(FMT, a...) printk("<== %s()"FMT"\n",__FUNCTION__ , ## a)
	25	#define kdebug(FMT, a...) printk(FMT"\n" , ## a)
	26	#define kproto(FMT, a...) printk("### "FMT"\n" , ## a)
	27	#define knet(FMT, a...) printk(FMT"\n" , ## a)
	28
	29	#ifdef __KDEBUG
	30	#define _enter(FMT, a...) kenter(FMT , ## a)
	31	#define _leave(FMT, a...) kleave(FMT , ## a)
	32	#define _debug(FMT, a...) kdebug(FMT , ## a)
	33	#define _proto(FMT, a...) kproto(FMT , ## a)
	34	#define _net(FMT, a...) knet(FMT , ## a)
	35	#else
	36	#define _enter(FMT, a...) do { } while(0)
	37	#define _leave(FMT, a...) do { } while(0)
	38	#define _debug(FMT, a...) do { } while(0)
	39	#define _proto(FMT, a...) do { } while(0)
	40	#define _net(FMT, a...) do { } while(0)
	41	#endif
	42
	43	static inline void afs_discard_my_signals(void)
	44	{
	45	while (signal_pending(current)) {
	46	siginfo_t sinfo;
	47
	48	spin_lock_irq(&current->sighand->siglock);
	49	dequeue_signal(current,&current->blocked, &sinfo);
	50	spin_unlock_irq(&current->sighand->siglock);
	51	}
	52	}
	53
	54	/*
	55	* cell.c
	56	*/
	57	extern struct rw_semaphore afs_proc_cells_sem;
	58	extern struct list_head afs_proc_cells;
	59	#ifdef AFS_CACHING_SUPPORT
	60	extern struct cachefs_index_def afs_cache_cell_index_def;
	61	#endif
	62
	63	/*
	64	* dir.c
65	*/
66	extern struct inode_operations afs_dir_inode_operations;
4b6f5d20	67	extern const struct file_operations afs_dir_file_operations;
1da177e4 LT	68
	69	/*
	70	* file.c
	71	*/
	72	extern struct address_space_operations afs_fs_aops;
	73	extern struct inode_operations afs_file_inode_operations;
1da177e4 LT	74
	75	#ifdef AFS_CACHING_SUPPORT
	76	extern int afs_cache_get_page_cookie(struct page *page,
	77	struct cachefs_page **_page_cookie);
	78	#endif
	79
	80	/*
	81	* inode.c
	82	*/
	83	extern int afs_iget(struct super_block sb, struct afs_fid fid,
	84	struct inode **_inode);
	85	extern int afs_inode_getattr(struct vfsmount mnt, struct dentry dentry,
	86	struct kstat *stat);
	87	extern void afs_clear_inode(struct inode *inode);
	88
	89	/*
	90	* key_afs.c
	91	*/
	92	#ifdef CONFIG_KEYS
	93	extern int afs_key_register(void);
	94	extern void afs_key_unregister(void);
	95	#endif
	96
	97	/*
	98	* main.c
	99	*/
	100	#ifdef AFS_CACHING_SUPPORT
	101	extern struct cachefs_netfs afs_cache_netfs;
	102	#endif
	103
	104	/*
	105	* mntpt.c
	106	*/
	107	extern struct inode_operations afs_mntpt_inode_operations;
4b6f5d20	108	extern const struct file_operations afs_mntpt_file_operations;
1da177e4 LT	109	extern struct afs_timer afs_mntpt_expiry_timer;
	110	extern struct afs_timer_ops afs_mntpt_expiry_timer_ops;
	111	extern unsigned long afs_mntpt_expiry_timeout;
	112
	113	extern int afs_mntpt_check_symlink(struct afs_vnode *vnode);
	114
	115	/*
	116	* super.c
	117	*/
	118	extern int afs_fs_init(void);
	119	extern void afs_fs_exit(void);
	120
	121	#define AFS_CB_HASH_COUNT (PAGE_SIZE / sizeof(struct list_head))
	122
	123	extern struct list_head afs_cb_hash_tbl[];
	124	extern spinlock_t afs_cb_hash_lock;
	125
	126	#define afs_cb_hash(SRV,FID) \
	127	afs_cb_hash_tbl[((unsigned long)(SRV) + \
	128	(FID)->vid + (FID)->vnode + (FID)->unique) % \
	129	AFS_CB_HASH_COUNT]
	130
	131	/*
	132	* proc.c
	133	*/
	134	extern int afs_proc_init(void);
	135	extern void afs_proc_cleanup(void);
	136	extern int afs_proc_cell_setup(struct afs_cell *cell);
	137	extern void afs_proc_cell_remove(struct afs_cell *cell);
	138
	139	#endif /* AFS_INTERNAL_H */