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/*

 * 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 <linux/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 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, struct nameidata *nd);

int coda_revalidate_inode(struct dentry *);

int coda_getattr(struct vfsmount *, struct dentry *, struct kstat *);

int coda_setattr(struct dentry *, struct iattr *);

/* this file:  heloers */

static __inline__ struct CodaFid *coda_i2f(struct inode *);

static __inline__ char *coda_i2s(struct inode *);

static __inline__ void coda_flag_inode(struct inode *, int flag);

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 = kmalloc((unsigned long) size, GFP_KERNEL); \

    else \

        ptr = (cast)vmalloc((unsigned long) size); \

    if (!ptr) \

        printk("kernel malloc returns 0 at %s:%d\n", __FILE__, __LINE__); \

    else memset( ptr, 0, size ); \

} 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)

{

        ITOC(inode)->c_flags |= flag;

}

#endif