[mirror_ubuntu-jammy-kernel.git] / fs / coda / coda_psdev.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __CODA_PSDEV_H
#define __CODA_PSDEV_H

#include <linux/backing-dev.h>
#include <linux/magic.h>
#include <linux/mutex.h>

#define CODA_PSDEV_MAJOR 67
#define MAX_CODADEVS  5	   /* how many do we allow */

struct kstatfs;

/* messages between coda filesystem in kernel and Venus */
struct upc_req {
	struct list_head	uc_chain;
	caddr_t			uc_data;
	u_short			uc_flags;
	u_short			uc_inSize;  /* Size is at most 5000 bytes */
	u_short			uc_outSize;
	u_short			uc_opcode;  /* copied from data to save lookup */
	int			uc_unique;
	wait_queue_head_t	uc_sleep;   /* process' wait queue */
};

#define CODA_REQ_ASYNC  0x1
#define CODA_REQ_READ   0x2
#define CODA_REQ_WRITE  0x4
#define CODA_REQ_ABORT  0x8

/* communication pending/processing queues */
struct venus_comm {
	u_long		    vc_seq;
	wait_queue_head_t   vc_waitq; /* Venus wait queue */
	struct list_head    vc_pending;
	struct list_head    vc_processing;
	int                 vc_inuse;
	struct super_block *vc_sb;
	struct mutex	    vc_mutex;
};

static inline struct venus_comm *coda_vcp(struct super_block *sb)
{
	return (struct venus_comm *)((sb)->s_fs_info);
}

/* upcalls */
int venus_rootfid(struct super_block *sb, struct CodaFid *fidp);
int venus_getattr(struct super_block *sb, struct CodaFid *fid,
		  struct coda_vattr *attr);
int venus_setattr(struct super_block *, struct CodaFid *, struct coda_vattr *);
int venus_lookup(struct super_block *sb, struct CodaFid *fid,
		 const char *name, int length, int *type,
		 struct CodaFid *resfid);
int venus_close(struct super_block *sb, struct CodaFid *fid, int flags,
		kuid_t uid);
int venus_open(struct super_block *sb, struct CodaFid *fid, int flags,
	       struct file **f);
int venus_mkdir(struct super_block *sb, struct CodaFid *dirfid,
		const char *name, int length,
		struct CodaFid *newfid, struct coda_vattr *attrs);
int venus_create(struct super_block *sb, struct CodaFid *dirfid,
		 const char *name, int length, int excl, int mode,
		 struct CodaFid *newfid, struct coda_vattr *attrs);
int venus_rmdir(struct super_block *sb, struct CodaFid *dirfid,
		const char *name, int length);
int venus_remove(struct super_block *sb, struct CodaFid *dirfid,
		 const char *name, int length);
int venus_readlink(struct super_block *sb, struct CodaFid *fid,
		   char *buffer, int *length);
int venus_rename(struct super_block *sb, struct CodaFid *new_fid,
		 struct CodaFid *old_fid, size_t old_length,
		 size_t new_length, const char *old_name,
		 const char *new_name);
int venus_link(struct super_block *sb, struct CodaFid *fid,
		  struct CodaFid *dirfid, const char *name, int len );
int venus_symlink(struct super_block *sb, struct CodaFid *fid,
		  const char *name, int len, const char *symname, int symlen);
int venus_access(struct super_block *sb, struct CodaFid *fid, int mask);
int venus_pioctl(struct super_block *sb, struct CodaFid *fid,
		 unsigned int cmd, struct PioctlData *data);
int coda_downcall(struct venus_comm *vcp, int opcode, union outputArgs *out,
		  size_t nbytes);
int venus_fsync(struct super_block *sb, struct CodaFid *fid);
int venus_statfs(struct dentry *dentry, struct kstatfs *sfs);
int venus_access_intent(struct super_block *sb, struct CodaFid *fid,
			bool *access_intent_supported,
			size_t count, loff_t ppos, int type);

/*
 * Statistics
 */

extern struct venus_comm coda_comms[];
#endif
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
1da177e4 LT	2	#ifndef __CODA_PSDEV_H
	3	#define __CODA_PSDEV_H
	4
33f60e96	5	#include <linux/backing-dev.h>
6dc280eb	6	#include <linux/magic.h>
da47c19e	7	#include <linux/mutex.h>
6dc280eb JH	8
	9	#define CODA_PSDEV_MAJOR 67
	10	#define MAX_CODADEVS 5 /* how many do we allow */
33f60e96	11
1da177e4 LT	12	struct kstatfs;
1da177e4 LT	13
f90fb3c7 MR	14	/* messages between coda filesystem in kernel and Venus */
	15	struct upc_req {
	16	struct list_head uc_chain;
	17	caddr_t uc_data;
	18	u_short uc_flags;
	19	u_short uc_inSize; /* Size is at most 5000 bytes */
	20	u_short uc_outSize;
	21	u_short uc_opcode; /* copied from data to save lookup */
	22	int uc_unique;
	23	wait_queue_head_t uc_sleep; /* process' wait queue */
	24	};
1da177e4	25
2fe7491d JH	26	#define CODA_REQ_ASYNC 0x1
	27	#define CODA_REQ_READ 0x2
	28	#define CODA_REQ_WRITE 0x4
	29	#define CODA_REQ_ABORT 0x8
	30
8fc8b9df DH	31	/* communication pending/processing queues */
	32	struct venus_comm {
	33	u_long vc_seq;
	34	wait_queue_head_t vc_waitq; /* Venus wait queue */
	35	struct list_head vc_pending;
	36	struct list_head vc_processing;
	37	int vc_inuse;
	38	struct super_block *vc_sb;
	39	struct mutex vc_mutex;
	40	};
	41
a1b0aa87	42	static inline struct venus_comm coda_vcp(struct super_block sb)
1da177e4	43	{
a1b0aa87	44	return (struct venus_comm *)((sb)->s_fs_info);
1da177e4 LT	45	}
1da177e4 LT	46
1da177e4 LT	47	/* upcalls */
	48	int venus_rootfid(struct super_block sb, struct CodaFid fidp);
	49	int venus_getattr(struct super_block sb, struct CodaFid fid,
	50	struct coda_vattr *attr);
	51	int venus_setattr(struct super_block , struct CodaFid , struct coda_vattr *);
8fc8b9df DH	52	int venus_lookup(struct super_block sb, struct CodaFid fid,
8fc8b9df DH	53	const char name, int length, int type,
1da177e4	54	struct CodaFid *resfid);
1da177e4	55	int venus_close(struct super_block sb, struct CodaFid fid, int flags,
d83f5901	56	kuid_t uid);
1da177e4 LT	57	int venus_open(struct super_block sb, struct CodaFid fid, int flags,
1da177e4 LT	58	struct file **f);
8fc8b9df DH	59	int venus_mkdir(struct super_block sb, struct CodaFid dirfid,
8fc8b9df DH	60	const char *name, int length,
1da177e4	61	struct CodaFid newfid, struct coda_vattr attrs);
8fc8b9df	62	int venus_create(struct super_block sb, struct CodaFid dirfid,
1da177e4	63	const char *name, int length, int excl, int mode,
8fc8b9df DH	64	struct CodaFid newfid, struct coda_vattr attrs);
8fc8b9df DH	65	int venus_rmdir(struct super_block sb, struct CodaFid dirfid,
1da177e4	66	const char *name, int length);
8fc8b9df	67	int venus_remove(struct super_block sb, struct CodaFid dirfid,
1da177e4	68	const char *name, int length);
8fc8b9df	69	int venus_readlink(struct super_block sb, struct CodaFid fid,
1da177e4	70	char buffer, int length);
8fc8b9df DH	71	int venus_rename(struct super_block sb, struct CodaFid new_fid,
	72	struct CodaFid *old_fid, size_t old_length,
	73	size_t new_length, const char *old_name,
1da177e4	74	const char *new_name);
8fc8b9df	75	int venus_link(struct super_block sb, struct CodaFid fid,
1da177e4 LT	76	struct CodaFid dirfid, const char name, int len );
	77	int venus_symlink(struct super_block sb, struct CodaFid fid,
	78	const char name, int len, const char symname, int symlen);
	79	int venus_access(struct super_block sb, struct CodaFid fid, int mask);
	80	int venus_pioctl(struct super_block sb, struct CodaFid fid,
	81	unsigned int cmd, struct PioctlData *data);
6e51f8aa JH	82	int coda_downcall(struct venus_comm vcp, int opcode, union outputArgs out,
6e51f8aa JH	83	size_t nbytes);
1da177e4	84	int venus_fsync(struct super_block sb, struct CodaFid fid);
726c3342	85	int venus_statfs(struct dentry dentry, struct kstatfs sfs);
a9fba24c PC	86	int venus_access_intent(struct super_block sb, struct CodaFid fid,
	87	bool *access_intent_supported,
	88	size_t count, loff_t ppos, int type);
1da177e4	89
7e7f4eae JSR	90	/*
	91	* Statistics
	92	*/
	93
	94	extern struct venus_comm coda_comms[];
1da177e4	95	#endif