[mirror_ubuntu-zesty-kernel.git] / fs / coda / coda_linux.h

/* 
 * Coda File System, Linux Kernel module
 * 
 * Original version, adapted from cfs_mach.c, (C) Carnegie Mellon University
 * Linux modifications (C) 1996, Peter J. Braam
 * Rewritten for Linux 2.1 (C) 1997 Carnegie Mellon University
 *
 * Carnegie Mellon University encourages users of this software to
 * contribute improvements to the Coda project.
 */

#ifndef _LINUX_CODA_FS
#define _LINUX_CODA_FS

#include <linux/kernel.h>
#include <linux/param.h>
#include <linux/mm.h>
#include <linux/vmalloc.h>
#include <linux/slab.h>
#include <linux/wait.h>		
#include <linux/types.h>
#include <linux/fs.h>
#include "coda_fs_i.h"

/* operations */
extern const struct inode_operations coda_dir_inode_operations;
extern const struct inode_operations coda_file_inode_operations;
extern const struct inode_operations coda_ioctl_inode_operations;

extern const struct dentry_operations coda_dentry_operations;

extern const struct address_space_operations coda_file_aops;
extern const struct address_space_operations coda_symlink_aops;

extern const struct file_operations coda_dir_operations;
extern const struct file_operations coda_file_operations;
extern const struct file_operations coda_ioctl_operations;

/* operations shared over more than one file */
int coda_open(struct inode *i, struct file *f);
int coda_release(struct inode *i, struct file *f);
int coda_permission(struct inode *inode, int mask);
int coda_revalidate_inode(struct inode *);
int coda_getattr(struct vfsmount *, struct dentry *, struct kstat *);
int coda_setattr(struct dentry *, struct iattr *);

/* this file:  heloers */
char *coda_f2s(struct CodaFid *f);
int coda_isroot(struct inode *i);
int coda_iscontrol(const char *name, size_t length);

void coda_vattr_to_iattr(struct inode *, struct coda_vattr *);
void coda_iattr_to_vattr(struct iattr *, struct coda_vattr *);
unsigned short coda_flags_to_cflags(unsigned short);

/* sysctl.h */
void coda_sysctl_init(void);
void coda_sysctl_clean(void);

#define CODA_ALLOC(ptr, cast, size) do { \
    if (size < PAGE_SIZE) \
        ptr = kzalloc((unsigned long) size, GFP_KERNEL); \
    else \
        ptr = (cast)vzalloc((unsigned long) size); \
    if (!ptr) \
        printk("kernel malloc returns 0 at %s:%d\n", __FILE__, __LINE__); \
} while (0)


#define CODA_FREE(ptr,size) \
    do { if (size < PAGE_SIZE) kfree((ptr)); else vfree((ptr)); } while (0)

/* inode to cnode access functions */

static inline struct coda_inode_info *ITOC(struct inode *inode)
{
	return list_entry(inode, struct coda_inode_info, vfs_inode);
}

static __inline__ struct CodaFid *coda_i2f(struct inode *inode)
{
	return &(ITOC(inode)->c_fid);
}

static __inline__ char *coda_i2s(struct inode *inode)
{
	return coda_f2s(&(ITOC(inode)->c_fid));
}

/* this will not zap the inode away */
static __inline__ void coda_flag_inode(struct inode *inode, int flag)
{
	struct coda_inode_info *cii = ITOC(inode);

	spin_lock(&cii->c_lock);
	cii->c_flags |= flag;
	spin_unlock(&cii->c_lock);
}		

#endif
Commit	Line	Data
1da177e4 LT	1	/*
	2	* Coda File System, Linux Kernel module
	3	*
	4	* Original version, adapted from cfs_mach.c, (C) Carnegie Mellon University
	5	* Linux modifications (C) 1996, Peter J. Braam
	6	* Rewritten for Linux 2.1 (C) 1997 Carnegie Mellon University
	7	*
	8	* Carnegie Mellon University encourages users of this software to
	9	* contribute improvements to the Coda project.
	10	*/
	11
	12	#ifndef _LINUX_CODA_FS
	13	#define _LINUX_CODA_FS
	14
	15	#include <linux/kernel.h>
	16	#include <linux/param.h>
	17	#include <linux/mm.h>
	18	#include <linux/vmalloc.h>
	19	#include <linux/slab.h>
	20	#include <linux/wait.h>
	21	#include <linux/types.h>
	22	#include <linux/fs.h>
31a203df	23	#include "coda_fs_i.h"
1da177e4 LT	24
1da177e4 LT	25	/* operations */
c5ef1c42 AV	26	extern const struct inode_operations coda_dir_inode_operations;
	27	extern const struct inode_operations coda_file_inode_operations;
	28	extern const struct inode_operations coda_ioctl_inode_operations;
1da177e4	29
9501e4c4 AV	30	extern const struct dentry_operations coda_dentry_operations;
9501e4c4 AV	31
f5e54d6e CH	32	extern const struct address_space_operations coda_file_aops;
f5e54d6e CH	33	extern const struct address_space_operations coda_symlink_aops;
1da177e4	34
4b6f5d20 AV	35	extern const struct file_operations coda_dir_operations;
	36	extern const struct file_operations coda_file_operations;
	37	extern const struct file_operations coda_ioctl_operations;
1da177e4 LT	38
	39	/* operations shared over more than one file */
	40	int coda_open(struct inode i, struct file f);
1da177e4	41	int coda_release(struct inode i, struct file f);
10556cb2	42	int coda_permission(struct inode *inode, int mask);
11d100d9	43	int coda_revalidate_inode(struct inode *);
1da177e4 LT	44	int coda_getattr(struct vfsmount , struct dentry , struct kstat *);
	45	int coda_setattr(struct dentry , struct iattr );
	46
1da177e4	47	/* this file: heloers */
1da177e4 LT	48	char coda_f2s(struct CodaFid f);
	49	int coda_isroot(struct inode *i);
	50	int coda_iscontrol(const char *name, size_t length);
	51
	52	void coda_vattr_to_iattr(struct inode , struct coda_vattr );
	53	void coda_iattr_to_vattr(struct iattr , struct coda_vattr );
	54	unsigned short coda_flags_to_cflags(unsigned short);
	55
	56	/* sysctl.h */
	57	void coda_sysctl_init(void);
	58	void coda_sysctl_clean(void);
	59
	60	#define CODA_ALLOC(ptr, cast, size) do { \
	61	if (size < PAGE_SIZE) \
558feb08	62	ptr = kzalloc((unsigned long) size, GFP_KERNEL); \
1da177e4	63	else \
558feb08	64	ptr = (cast)vzalloc((unsigned long) size); \
1da177e4 LT	65	if (!ptr) \
1da177e4 LT	66	printk("kernel malloc returns 0 at %s:%d\n", __FILE__, __LINE__); \
1da177e4 LT	67	} while (0)
	68
	69
	70	#define CODA_FREE(ptr,size) \
	71	do { if (size < PAGE_SIZE) kfree((ptr)); else vfree((ptr)); } while (0)
	72
	73	/* inode to cnode access functions */
	74
	75	static inline struct coda_inode_info ITOC(struct inode inode)
	76	{
	77	return list_entry(inode, struct coda_inode_info, vfs_inode);
	78	}
	79
	80	static __inline__ struct CodaFid coda_i2f(struct inode inode)
	81	{
	82	return &(ITOC(inode)->c_fid);
	83	}
	84
	85	static __inline__ char coda_i2s(struct inode inode)
	86	{
	87	return coda_f2s(&(ITOC(inode)->c_fid));
	88	}
	89
	90	/* this will not zap the inode away */
	91	static __inline__ void coda_flag_inode(struct inode *inode, int flag)
	92	{
b5ce1d83 YA	93	struct coda_inode_info *cii = ITOC(inode);
	94
	95	spin_lock(&cii->c_lock);
	96	cii->c_flags \|= flag;
	97	spin_unlock(&cii->c_lock);
1da177e4 LT	98	}
	99
	100	#endif