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 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 void coda_replace_fid(struct inode *, struct CodaFid *, struct CodaFid *); 57 58 #endif 59