[people/ms/linux.git] / fs / coda / coda_linux.h

/* SPDX-License-Identifier: GPL-2.0 */
/* 
 * 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 user_namespace *mnt_userns, struct inode *inode,
		    int mask);
int coda_revalidate_inode(struct inode *);
int coda_getattr(struct user_namespace *, const struct path *, struct kstat *,
		 u32, unsigned int);
int coda_setattr(struct user_namespace *, struct dentry *, struct iattr *);

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

umode_t coda_inode_type(struct coda_vattr *attr);
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);

/* 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);

	if (!inode)
		return;

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

#endif
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
1da177e4 LT	2	/*
	3	* Coda File System, Linux Kernel module
	4	*
	5	* Original version, adapted from cfs_mach.c, (C) Carnegie Mellon University
	6	* Linux modifications (C) 1996, Peter J. Braam
	7	* Rewritten for Linux 2.1 (C) 1997 Carnegie Mellon University
	8	*
	9	* Carnegie Mellon University encourages users of this software to
	10	* contribute improvements to the Coda project.
	11	*/
	12
	13	#ifndef _LINUX_CODA_FS
	14	#define _LINUX_CODA_FS
	15
f38cfb25 FF	16	#ifdef pr_fmt
	17	#undef pr_fmt
	18	#endif
	19
	20	#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
	21
1da177e4 LT	22	#include <linux/kernel.h>
	23	#include <linux/param.h>
	24	#include <linux/mm.h>
	25	#include <linux/vmalloc.h>
	26	#include <linux/slab.h>
	27	#include <linux/wait.h>
	28	#include <linux/types.h>
	29	#include <linux/fs.h>
31a203df	30	#include "coda_fs_i.h"
1da177e4 LT	31
1da177e4 LT	32	/* operations */
c5ef1c42 AV	33	extern const struct inode_operations coda_dir_inode_operations;
	34	extern const struct inode_operations coda_file_inode_operations;
	35	extern const struct inode_operations coda_ioctl_inode_operations;
1da177e4	36
9501e4c4 AV	37	extern const struct dentry_operations coda_dentry_operations;
9501e4c4 AV	38
f5e54d6e CH	39	extern const struct address_space_operations coda_file_aops;
f5e54d6e CH	40	extern const struct address_space_operations coda_symlink_aops;
1da177e4	41
4b6f5d20 AV	42	extern const struct file_operations coda_dir_operations;
	43	extern const struct file_operations coda_file_operations;
	44	extern const struct file_operations coda_ioctl_operations;
1da177e4 LT	45
	46	/* operations shared over more than one file */
	47	int coda_open(struct inode i, struct file f);
1da177e4	48	int coda_release(struct inode i, struct file f);
549c7297 CB	49	int coda_permission(struct user_namespace mnt_userns, struct inode inode,
549c7297 CB	50	int mask);
11d100d9	51	int coda_revalidate_inode(struct inode *);
549c7297 CB	52	int coda_getattr(struct user_namespace , const struct path , struct kstat *,
	53	u32, unsigned int);
	54	int coda_setattr(struct user_namespace , struct dentry , struct iattr *);
1da177e4	55
5a646fb3	56	/* this file: helpers */
1da177e4	57	char coda_f2s(struct CodaFid f);
1da177e4 LT	58	int coda_iscontrol(const char *name, size_t length);
1da177e4 LT	59
5a646fb3	60	umode_t coda_inode_type(struct coda_vattr *attr);
1da177e4 LT	61	void coda_vattr_to_iattr(struct inode , struct coda_vattr );
	62	void coda_iattr_to_vattr(struct iattr , struct coda_vattr );
	63	unsigned short coda_flags_to_cflags(unsigned short);
	64
1da177e4 LT	65	/* inode to cnode access functions */
	66
	67	static inline struct coda_inode_info ITOC(struct inode inode)
	68	{
db6172c4	69	return container_of(inode, struct coda_inode_info, vfs_inode);
1da177e4 LT	70	}
	71
	72	static __inline__ struct CodaFid coda_i2f(struct inode inode)
	73	{
	74	return &(ITOC(inode)->c_fid);
	75	}
	76
	77	static __inline__ char coda_i2s(struct inode inode)
	78	{
	79	return coda_f2s(&(ITOC(inode)->c_fid));
	80	}
	81
	82	/* this will not zap the inode away */
	83	static __inline__ void coda_flag_inode(struct inode *inode, int flag)
	84	{
b5ce1d83 YA	85	struct coda_inode_info *cii = ITOC(inode);
b5ce1d83 YA	86
76097eb7 JH	87	if (!inode)
	88	return;
	89
b5ce1d83 YA	90	spin_lock(&cii->c_lock);
	91	cii->c_flags \|= flag;
	92	spin_unlock(&cii->c_lock);
1da177e4 LT	93	}
	94
	95	#endif