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1 | /* |
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 | |
11 | #include <linux/types.h> |
12 | #include <linux/list.h> |
13 | #include <linux/spinlock.h> |
14 | #include <linux/coda.h> |
15 | |
16 | /* |
17 | * coda fs inode data |
18 | * 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. |
22 | */ |
23 | struct coda_inode_info { |
24 | struct CodaFid c_fid; /* Coda identifier */ |
25 | u_short c_flags; /* flags (see below) */ |
26 | 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 */ |
29 | unsigned int c_cached_perm; /* cached access permissions */ |
30 | spinlock_t c_lock; |
31 | struct inode vfs_inode; |
32 | }; |
33 | |
34 | /* |
35 | * coda fs file private data |
36 | */ |
37 | #define CODA_MAGIC 0xC0DAC0DA |
38 | struct 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 | |
52 | int coda_cnode_make(struct inode **, struct CodaFid *, struct super_block *); |
53 | struct inode *coda_iget(struct super_block *sb, struct CodaFid *fid, struct coda_vattr *attr); |
54 | int coda_cnode_makectl(struct inode **inode, struct super_block *sb); |
55 | struct inode *coda_fid_to_inode(struct CodaFid *fid, struct super_block *sb); |
56 | void coda_replace_fid(struct inode *, struct CodaFid *, struct CodaFid *); |
57 | |
58 | #endif |
59 |
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