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/version.h>
  16 #include <linux/compiler.h>
  17 #include <linux/kernel.h>
  18 #include <linux/fs.h>
  19 #include <linux/pagemap.h>
  20
  21 /*
  22  * debug tracing
  23  */
  24 #define kenter(FMT, a...)       printk("==> %s("FMT")\n",__FUNCTION__ , ## a)
  25 #define kleave(FMT, a...)       printk("<== %s()"FMT"\n",__FUNCTION__ , ## a)
  26 #define kdebug(FMT, a...)       printk(FMT"\n" , ## a)
  27 #define kproto(FMT, a...)       printk("### "FMT"\n" , ## a)
  28 #define knet(FMT, a...)         printk(FMT"\n" , ## a)
  29
  30 #if 0
  31 #define _enter(FMT, a...)       kenter(FMT , ## a)
  32 #define _leave(FMT, a...)       kleave(FMT , ## a)
  33 #define _debug(FMT, a...)       kdebug(FMT , ## a)
  34 #define _proto(FMT, a...)       kproto(FMT , ## a)
  35 #define _net(FMT, a...)         knet(FMT , ## a)
  36 #else
  37 #define _enter(FMT, a...)       do { } while(0)
  38 #define _leave(FMT, a...)       do { } while(0)
  39 #define _debug(FMT, a...)       do { } while(0)
  40 #define _proto(FMT, a...)       do { } while(0)
  41 #define _net(FMT, a...)         do { } while(0)
  42 #endif
  43
  44 static inline void afs_discard_my_signals(void)
  45 {
  46         while (signal_pending(current)) {
  47                 siginfo_t sinfo;
  48
  49                 spin_lock_irq(&current->sighand->siglock);
  50                 dequeue_signal(current,&current->blocked,&sinfo);
  51                 spin_unlock_irq(&current->sighand->siglock);
  52         }
  53 }
  54
  55 /*
  56  * cell.c
  57  */
  58 extern struct rw_semaphore afs_proc_cells_sem;
  59 extern struct list_head afs_proc_cells;
  60
  61 /*
  62  * dir.c
  63  */
  64 extern struct inode_operations afs_dir_inode_operations;
  65 extern struct file_operations afs_dir_file_operations;
  66
  67 /*
  68  * file.c
  69  */
  70 extern struct address_space_operations afs_fs_aops;
  71 extern struct inode_operations afs_file_inode_operations;
  72 extern struct file_operations afs_file_file_operations;
  73
  74 /*
  75  * inode.c
  76  */
  77 extern int afs_iget(struct super_block *sb, afs_fid_t *fid, struct inode **_inode);
  78 extern int afs_inode_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat);
  79 extern void afs_clear_inode(struct inode *inode);
  80
  81 /*
  82  * mntpt.c
  83  */
  84 extern struct inode_operations afs_mntpt_inode_operations;
  85 extern struct file_operations afs_mntpt_file_operations;
  86
  87 extern int afs_mntpt_check_symlink(afs_vnode_t *vnode);
  88
  89 /*
  90  * super.c
  91  */
  92 extern int afs_fs_init(void);
  93 extern void afs_fs_exit(void);
  94
  95 #define AFS_CB_HASH_COUNT (PAGE_SIZE/sizeof(struct list_head))
  96
  97 extern struct list_head afs_cb_hash_tbl[];
  98 extern spinlock_t afs_cb_hash_lock;
  99
 100 #define afs_cb_hash(SRV,FID) \
 101         afs_cb_hash_tbl[((unsigned long)(SRV) + (FID)->vid + (FID)->vnode + (FID)->unique) % \
 102                         AFS_CB_HASH_COUNT]
 103
 104 /*
 105  * proc.c
 106  */
 107 extern int afs_proc_init(void);
 108 extern void afs_proc_cleanup(void);
 109 extern int afs_proc_cell_setup(afs_cell_t *cell);
 110 extern void afs_proc_cell_remove(afs_cell_t *cell);
 111
 112 #endif /* AFS_INTERNAL_H */