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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * coda_fs_i.h
3 *
4 * Copyright (C) 1998 Carnegie Mellon University
5 *
6 */
7
8#ifndef _LINUX_CODA_FS_I
9#define _LINUX_CODA_FS_I
10
Linus Torvalds1da177e2005-04-16 15:20:36 -070011#include <linux/types.h>
12#include <linux/list.h>
Yoshihisa Abeb5ce1d82010-10-25 02:03:44 -040013#include <linux/spinlock.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070014#include <linux/coda.h>
15
16/*
17 * coda fs inode data
Yoshihisa Abeb5ce1d82010-10-25 02:03:44 -040018 * c_lock protects accesses to c_flags, c_mapcount, c_cached_epoch, c_uid and
19 * c_cached_perm.
20 * vfs_inode is set only when the inode is created and never changes.
21 * c_fid is set when the inode is created and should be considered immutable.
Linus Torvalds1da177e2005-04-16 15:20:36 -070022 */
23struct coda_inode_info {
Yoshihisa Abeb5ce1d82010-10-25 02:03:44 -040024 struct CodaFid c_fid; /* Coda identifier */
25 u_short c_flags; /* flags (see below) */
Linus Torvalds1da177e2005-04-16 15:20:36 -070026 unsigned int c_mapcount; /* nr of times this inode is mapped */
27 unsigned int c_cached_epoch; /* epoch for cached permissions */
28 vuid_t c_uid; /* fsuid for cached permissions */
Yoshihisa Abeb5ce1d82010-10-25 02:03:44 -040029 unsigned int c_cached_perm; /* cached access permissions */
30 spinlock_t c_lock;
Linus Torvalds1da177e2005-04-16 15:20:36 -070031 struct inode vfs_inode;
32};
33
34/*
35 * coda fs file private data
36 */
37#define CODA_MAGIC 0xC0DAC0DA
38struct coda_file_info {
39 int cfi_magic; /* magic number */
40 struct file *cfi_container; /* container file for this cnode */
41 unsigned int cfi_mapcount; /* nr of times this file is mapped */
42};
43
44#define CODA_FTOC(file) ((struct coda_file_info *)((file)->private_data))
45
46/* flags */
47#define C_VATTR 0x1 /* Validity of vattr in inode */
48#define C_FLUSH 0x2 /* used after a flush */
49#define C_DYING 0x4 /* from venus (which died) */
50#define C_PURGE 0x8
51
Al Virof4947fb2012-01-10 11:11:49 -050052struct inode *coda_cnode_make(struct CodaFid *, struct super_block *);
Linus Torvalds1da177e2005-04-16 15:20:36 -070053struct inode *coda_iget(struct super_block *sb, struct CodaFid *fid, struct coda_vattr *attr);
Al Viro0b2c4e32012-01-10 10:46:03 -050054struct inode *coda_cnode_makectl(struct super_block *sb);
Linus Torvalds1da177e2005-04-16 15:20:36 -070055struct inode *coda_fid_to_inode(struct CodaFid *fid, struct super_block *sb);
56void coda_replace_fid(struct inode *, struct CodaFid *, struct CodaFid *);
57
58#endif