1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | /* |
3 | * coda_fs_i.h |
4 | * |
5 | * Copyright (C) 1998 Carnegie Mellon University |
6 | * |
7 | */ |
8 | |
9 | #ifndef _LINUX_CODA_FS_I |
10 | #define _LINUX_CODA_FS_I |
11 | |
12 | #include <linux/types.h> |
13 | #include <linux/list.h> |
14 | #include <linux/spinlock.h> |
15 | #include <linux/coda.h> |
16 | |
17 | /* |
18 | * coda fs inode data |
19 | * c_lock protects accesses to c_flags, c_mapcount, c_cached_epoch, c_uid and |
20 | * c_cached_perm. |
21 | * vfs_inode is set only when the inode is created and never changes. |
22 | * c_fid is set when the inode is created and should be considered immutable. |
23 | */ |
24 | struct coda_inode_info { |
25 | struct CodaFid c_fid; /* Coda identifier */ |
26 | u_short c_flags; /* flags (see below) */ |
27 | unsigned int c_mapcount; /* nr of times this inode is mapped */ |
28 | unsigned int c_cached_epoch; /* epoch for cached permissions */ |
29 | kuid_t c_uid; /* fsuid for cached permissions */ |
30 | unsigned int c_cached_perm; /* cached access permissions */ |
31 | spinlock_t c_lock; |
32 | struct inode vfs_inode; |
33 | }; |
34 | |
35 | /* |
36 | * coda fs file private data |
37 | */ |
38 | #define CODA_MAGIC 0xC0DAC0DA |
39 | struct coda_file_info { |
40 | int cfi_magic; /* magic number */ |
41 | struct file *cfi_container; /* container file for this cnode */ |
42 | unsigned int cfi_mapcount; /* nr of times this file is mapped */ |
43 | bool cfi_access_intent; /* is access intent supported */ |
44 | }; |
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 | struct inode *coda_cnode_make(struct CodaFid *, struct super_block *); |
53 | struct inode *coda_iget(struct super_block *sb, struct CodaFid *fid, struct coda_vattr *attr); |
54 | struct inode *coda_cnode_makectl(struct super_block *sb); |
55 | struct inode *coda_fid_to_inode(struct CodaFid *fid, struct super_block *sb); |
56 | struct coda_file_info *coda_ftoc(struct file *file); |
57 | void coda_replace_fid(struct inode *, struct CodaFid *, struct CodaFid *); |
58 | |
59 | #endif |
60 | |