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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
43static inline void afs_discard_my_signals(void)
44{
45 while (signal_pending(current)) {
46 siginfo_t sinfo;
47
48 spin_lock_irq(¤t->sighand->siglock);
49 dequeue_signal(current,¤t->blocked, &sinfo);
50 spin_unlock_irq(¤t->sighand->siglock);
51 }
52}
53
54/*
55 * cell.c
56 */
57extern struct rw_semaphore afs_proc_cells_sem;
58extern struct list_head afs_proc_cells;
59#ifdef AFS_CACHING_SUPPORT
60extern struct cachefs_index_def afs_cache_cell_index_def;
61#endif
62
63/*
64 * dir.c
65 */
66extern struct inode_operations afs_dir_inode_operations;
67extern const struct file_operations afs_dir_file_operations;
68
69/*
70 * file.c
71 */
72extern const struct address_space_operations afs_fs_aops;
73extern struct inode_operations afs_file_inode_operations;
74
75#ifdef AFS_CACHING_SUPPORT
76extern int afs_cache_get_page_cookie(struct page *page,
77 struct cachefs_page **_page_cookie);
78#endif
79
80/*
81 * inode.c
82 */
83extern int afs_iget(struct super_block *sb, struct afs_fid *fid,
84 struct inode **_inode);
85extern int afs_inode_getattr(struct vfsmount *mnt, struct dentry *dentry,
86 struct kstat *stat);
87extern void afs_clear_inode(struct inode *inode);
88
89/*
90 * key_afs.c
91 */
92#ifdef CONFIG_KEYS
93extern int afs_key_register(void);
94extern void afs_key_unregister(void);
95#endif
96
97/*
98 * main.c
99 */
100#ifdef AFS_CACHING_SUPPORT
101extern struct cachefs_netfs afs_cache_netfs;
102#endif
103
104/*
105 * mntpt.c
106 */
107extern struct inode_operations afs_mntpt_inode_operations;
108extern const struct file_operations afs_mntpt_file_operations;
109extern struct afs_timer afs_mntpt_expiry_timer;
110extern struct afs_timer_ops afs_mntpt_expiry_timer_ops;
111extern unsigned long afs_mntpt_expiry_timeout;
112
113extern int afs_mntpt_check_symlink(struct afs_vnode *vnode);
114
115/*
116 * super.c
117 */
118extern int afs_fs_init(void);
119extern void afs_fs_exit(void);
120
121#define AFS_CB_HASH_COUNT (PAGE_SIZE / sizeof(struct list_head))
122
123extern struct list_head afs_cb_hash_tbl[];
124extern 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 */
134extern int afs_proc_init(void);
135extern void afs_proc_cleanup(void);
136extern int afs_proc_cell_setup(struct afs_cell *cell);
137extern void afs_proc_cell_remove(struct afs_cell *cell);
138
139#endif /* AFS_INTERNAL_H */