[linux.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

#ifdef pr_fmt
#undef pr_fmt
#endif

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#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_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) \
	pr_warn("kernel malloc returns 0 at %s:%d\n", __FILE__, __LINE__); \
} while (0)


#define CODA_FREE(ptr, size) kvfree((ptr))

/* inode to cnode access functions */

static inline struct coda_inode_info *ITOC(struct inode *inode)
{
	return container_of(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
f38cfb25 FF	15	#ifdef pr_fmt
	16	#undef pr_fmt
	17	#endif
	18
	19	#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
	20
1da177e4 LT	21	#include <linux/kernel.h>
	22	#include <linux/param.h>
	23	#include <linux/mm.h>
	24	#include <linux/vmalloc.h>
	25	#include <linux/slab.h>
	26	#include <linux/wait.h>
	27	#include <linux/types.h>
	28	#include <linux/fs.h>
31a203df	29	#include "coda_fs_i.h"
1da177e4 LT	30
1da177e4 LT	31	/* operations */
c5ef1c42 AV	32	extern const struct inode_operations coda_dir_inode_operations;
	33	extern const struct inode_operations coda_file_inode_operations;
	34	extern const struct inode_operations coda_ioctl_inode_operations;
1da177e4	35
9501e4c4 AV	36	extern const struct dentry_operations coda_dentry_operations;
9501e4c4 AV	37
f5e54d6e CH	38	extern const struct address_space_operations coda_file_aops;
f5e54d6e CH	39	extern const struct address_space_operations coda_symlink_aops;
1da177e4	40
4b6f5d20 AV	41	extern const struct file_operations coda_dir_operations;
	42	extern const struct file_operations coda_file_operations;
	43	extern const struct file_operations coda_ioctl_operations;
1da177e4 LT	44
	45	/* operations shared over more than one file */
	46	int coda_open(struct inode i, struct file f);
1da177e4	47	int coda_release(struct inode i, struct file f);
10556cb2	48	int coda_permission(struct inode *inode, int mask);
11d100d9	49	int coda_revalidate_inode(struct inode *);
1da177e4 LT	50	int coda_getattr(struct vfsmount , struct dentry , struct kstat *);
	51	int coda_setattr(struct dentry , struct iattr );
	52
1da177e4	53	/* this file: heloers */
1da177e4	54	char coda_f2s(struct CodaFid f);
1da177e4 LT	55	int coda_iscontrol(const char *name, size_t length);
	56
	57	void coda_vattr_to_iattr(struct inode , struct coda_vattr );
	58	void coda_iattr_to_vattr(struct iattr , struct coda_vattr );
	59	unsigned short coda_flags_to_cflags(unsigned short);
	60
	61	/* sysctl.h */
	62	void coda_sysctl_init(void);
	63	void coda_sysctl_clean(void);
	64
	65	#define CODA_ALLOC(ptr, cast, size) do { \
	66	if (size < PAGE_SIZE) \
558feb08	67	ptr = kzalloc((unsigned long) size, GFP_KERNEL); \
1da177e4	68	else \
558feb08	69	ptr = (cast)vzalloc((unsigned long) size); \
1da177e4	70	if (!ptr) \
d9b4b319	71	pr_warn("kernel malloc returns 0 at %s:%d\n", __FILE__, __LINE__); \
1da177e4 LT	72	} while (0)
	73
	74
1d5cfdb0	75	#define CODA_FREE(ptr, size) kvfree((ptr))
1da177e4 LT	76
	77	/* inode to cnode access functions */
	78
	79	static inline struct coda_inode_info ITOC(struct inode inode)
	80	{
db6172c4	81	return container_of(inode, struct coda_inode_info, vfs_inode);
1da177e4 LT	82	}
	83
	84	static __inline__ struct CodaFid coda_i2f(struct inode inode)
	85	{
	86	return &(ITOC(inode)->c_fid);
	87	}
	88
	89	static __inline__ char coda_i2s(struct inode inode)
	90	{
	91	return coda_f2s(&(ITOC(inode)->c_fid));
	92	}
	93
	94	/* this will not zap the inode away */
	95	static __inline__ void coda_flag_inode(struct inode *inode, int flag)
	96	{
b5ce1d83 YA	97	struct coda_inode_info *cii = ITOC(inode);
	98
	99	spin_lock(&cii->c_lock);
	100	cii->c_flags \|= flag;
	101	spin_unlock(&cii->c_lock);
1da177e4 LT	102	}
	103
	104	#endif