1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * coda_fs_i.h 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * Copyright (C) 1998 Carnegie Mellon University 6*4882a593Smuzhiyun * 7*4882a593Smuzhiyun */ 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun #ifndef _LINUX_CODA_FS_I 10*4882a593Smuzhiyun #define _LINUX_CODA_FS_I 11*4882a593Smuzhiyun 12*4882a593Smuzhiyun #include <linux/types.h> 13*4882a593Smuzhiyun #include <linux/list.h> 14*4882a593Smuzhiyun #include <linux/spinlock.h> 15*4882a593Smuzhiyun #include <linux/coda.h> 16*4882a593Smuzhiyun 17*4882a593Smuzhiyun /* 18*4882a593Smuzhiyun * coda fs inode data 19*4882a593Smuzhiyun * c_lock protects accesses to c_flags, c_mapcount, c_cached_epoch, c_uid and 20*4882a593Smuzhiyun * c_cached_perm. 21*4882a593Smuzhiyun * vfs_inode is set only when the inode is created and never changes. 22*4882a593Smuzhiyun * c_fid is set when the inode is created and should be considered immutable. 23*4882a593Smuzhiyun */ 24*4882a593Smuzhiyun struct coda_inode_info { 25*4882a593Smuzhiyun struct CodaFid c_fid; /* Coda identifier */ 26*4882a593Smuzhiyun u_short c_flags; /* flags (see below) */ 27*4882a593Smuzhiyun unsigned int c_mapcount; /* nr of times this inode is mapped */ 28*4882a593Smuzhiyun unsigned int c_cached_epoch; /* epoch for cached permissions */ 29*4882a593Smuzhiyun kuid_t c_uid; /* fsuid for cached permissions */ 30*4882a593Smuzhiyun unsigned int c_cached_perm; /* cached access permissions */ 31*4882a593Smuzhiyun spinlock_t c_lock; 32*4882a593Smuzhiyun struct inode vfs_inode; 33*4882a593Smuzhiyun }; 34*4882a593Smuzhiyun 35*4882a593Smuzhiyun /* 36*4882a593Smuzhiyun * coda fs file private data 37*4882a593Smuzhiyun */ 38*4882a593Smuzhiyun #define CODA_MAGIC 0xC0DAC0DA 39*4882a593Smuzhiyun struct coda_file_info { 40*4882a593Smuzhiyun int cfi_magic; /* magic number */ 41*4882a593Smuzhiyun struct file *cfi_container; /* container file for this cnode */ 42*4882a593Smuzhiyun unsigned int cfi_mapcount; /* nr of times this file is mapped */ 43*4882a593Smuzhiyun bool cfi_access_intent; /* is access intent supported */ 44*4882a593Smuzhiyun }; 45*4882a593Smuzhiyun 46*4882a593Smuzhiyun /* flags */ 47*4882a593Smuzhiyun #define C_VATTR 0x1 /* Validity of vattr in inode */ 48*4882a593Smuzhiyun #define C_FLUSH 0x2 /* used after a flush */ 49*4882a593Smuzhiyun #define C_DYING 0x4 /* from venus (which died) */ 50*4882a593Smuzhiyun #define C_PURGE 0x8 51*4882a593Smuzhiyun 52*4882a593Smuzhiyun struct inode *coda_cnode_make(struct CodaFid *, struct super_block *); 53*4882a593Smuzhiyun struct inode *coda_iget(struct super_block *sb, struct CodaFid *fid, struct coda_vattr *attr); 54*4882a593Smuzhiyun struct inode *coda_cnode_makectl(struct super_block *sb); 55*4882a593Smuzhiyun struct inode *coda_fid_to_inode(struct CodaFid *fid, struct super_block *sb); 56*4882a593Smuzhiyun struct coda_file_info *coda_ftoc(struct file *file); 57*4882a593Smuzhiyun void coda_replace_fid(struct inode *, struct CodaFid *, struct CodaFid *); 58*4882a593Smuzhiyun 59*4882a593Smuzhiyun #endif 60