[mirror_ubuntu-artful-kernel.git] / fs / coda / coda_fs_i.h

/*
 *  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
Commit	Line	Data
1da177e4 LT	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
1da177e4 LT	11	#include <linux/types.h>
1da177e4 LT	12	#include <linux/list.h>
b5ce1d83	13	#include <linux/spinlock.h>
1da177e4 LT	14	#include <linux/coda.h>
	15
	16	/*
	17	* coda fs inode data
b5ce1d83 YA	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.
1da177e4 LT	22	*/
1da177e4 LT	23	struct coda_inode_info {
b5ce1d83 YA	24	struct CodaFid c_fid; /* Coda identifier */
b5ce1d83 YA	25	u_short c_flags; /* flags (see below) */
1da177e4 LT	26	unsigned int c_mapcount; /* nr of times this inode is mapped */
1da177e4 LT	27	unsigned int c_cached_epoch; /* epoch for cached permissions */
17499e33	28	kuid_t c_uid; /* fsuid for cached permissions */
b5ce1d83 YA	29	unsigned int c_cached_perm; /* cached access permissions */
b5ce1d83 YA	30	spinlock_t c_lock;
1da177e4 LT	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
f4947fbc	52	struct inode coda_cnode_make(struct CodaFid , struct super_block *);
1da177e4	53	struct inode coda_iget(struct super_block sb, struct CodaFid fid, struct coda_vattr attr);
0b2c4e39	54	struct inode coda_cnode_makectl(struct super_block sb);
1da177e4 LT	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