linux-stable/fs/coda/coda_fs_i.h
Eric W. Biederman 17499e3329 coda: Cache permisions in struct coda_inode_info in a kuid_t.
- Change c_uid in struct coda_indoe_info from a vuid_t to a kuid_t.
- Initialize c_uid to GLOBAL_ROOT_UID instead of 0.
- Use uid_eq to compare cached kuids.

Cc: Jan Harkes <jaharkes@cs.cmu.edu>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
2013-02-13 06:00:54 -08:00

58 lines
1.8 KiB
C

/*
* coda_fs_i.h
*
* Copyright (C) 1998 Carnegie Mellon University
*
*/
#ifndef _LINUX_CODA_FS_I
#define _LINUX_CODA_FS_I
#include <linux/types.h>
#include <linux/list.h>
#include <linux/spinlock.h>
#include <linux/coda.h>
/*
* coda fs inode data
* c_lock protects accesses to c_flags, c_mapcount, c_cached_epoch, c_uid and
* c_cached_perm.
* vfs_inode is set only when the inode is created and never changes.
* c_fid is set when the inode is created and should be considered immutable.
*/
struct coda_inode_info {
struct CodaFid c_fid; /* Coda identifier */
u_short c_flags; /* flags (see below) */
unsigned int c_mapcount; /* nr of times this inode is mapped */
unsigned int c_cached_epoch; /* epoch for cached permissions */
kuid_t c_uid; /* fsuid for cached permissions */
unsigned int c_cached_perm; /* cached access permissions */
spinlock_t c_lock;
struct inode vfs_inode;
};
/*
* coda fs file private data
*/
#define CODA_MAGIC 0xC0DAC0DA
struct coda_file_info {
int cfi_magic; /* magic number */
struct file *cfi_container; /* container file for this cnode */
unsigned int cfi_mapcount; /* nr of times this file is mapped */
};
#define CODA_FTOC(file) ((struct coda_file_info *)((file)->private_data))
/* flags */
#define C_VATTR 0x1 /* Validity of vattr in inode */
#define C_FLUSH 0x2 /* used after a flush */
#define C_DYING 0x4 /* from venus (which died) */
#define C_PURGE 0x8
struct inode *coda_cnode_make(struct CodaFid *, struct super_block *);
struct inode *coda_iget(struct super_block *sb, struct CodaFid *fid, struct coda_vattr *attr);
struct inode *coda_cnode_makectl(struct super_block *sb);
struct inode *coda_fid_to_inode(struct CodaFid *fid, struct super_block *sb);
void coda_replace_fid(struct inode *, struct CodaFid *, struct CodaFid *);
#endif