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 }; 44 45 #define CODA_FTOC(file) ((struct coda_file_info *)((file)->private_data)) 46 47 /* flags */ 48 #define C_VATTR 0x1 /* Validity of vattr in inode */ 49 #define C_FLUSH 0x2 /* used after a flush */ 50 #define C_DYING 0x4 /* from venus (which died) */ 51 #define C_PURGE 0x8 52 53 struct inode *coda_cnode_make(struct CodaFid *, struct super_block *); 54 struct inode *coda_iget(struct super_block *sb, struct CodaFid *fid, struct coda_vattr *attr); 55 struct inode *coda_cnode_makectl(struct super_block *sb); 56 struct inode *coda_fid_to_inode(struct CodaFid *fid, struct super_block *sb); 57 void coda_replace_fid(struct inode *, struct CodaFid *, struct CodaFid *); 58 59 #endif 60