fs/afs/internal.h

   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;
  67 extern const struct file_operations afs_dir_file_operations;
  68
  69 /*
  70  * file.c
  71  */
  72 extern struct address_space_operations afs_fs_aops;
  73 extern struct inode_operations afs_file_inode_operations;
  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;
 108 extern const struct file_operations afs_mntpt_file_operations;
 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 */