nfs_xdr.h

Axis 221 camera embedded programing interface

#ifndef _LINUX_NFS_XDR_H
#define _LINUX_NFS_XDR_H

#include <linux/nfsacl.h>

/*
 * To change the maximum rsize and wsize supported by the NFS client, adjust
 * NFS_MAX_FILE_IO_SIZE.  64KB is a typical maximum, but some servers can
 * support a megabyte or more.  The default is left at 4096 bytes, which is
 * reasonable for NFS over UDP.
 */
#define NFS_MAX_FILE_IO_SIZE	(1048576U)
#define NFS_DEF_FILE_IO_SIZE	(4096U)
#define NFS_MIN_FILE_IO_SIZE	(1024U)

struct nfs_fsid {
	uint64_t		major;
	uint64_t		minor;
};

/*
 * Helper for checking equality between 2 fsids.
 */
static inline int nfs_fsid_equal(const struct nfs_fsid *a, const struct nfs_fsid *b)
{
	return a->major == b->major && a->minor == b->minor;
}

struct nfs_fattr {
	unsigned short		valid;		/* which fields are valid */
	__u64			pre_size;	/* pre_op_attr.size	  */
	struct timespec		pre_mtime;	/* pre_op_attr.mtime	  */
	struct timespec		pre_ctime;	/* pre_op_attr.ctime	  */
	enum nfs_ftype		type;		/* always use NFSv2 types */
	__u32			mode;
	__u32			nlink;
	__u32			uid;
	__u32			gid;
	__u64			size;
	union {
		struct {
			__u32	blocksize;
			__u32	blocks;
		} nfs2;
		struct {
			__u64	used;
		} nfs3;
	} du;
	dev_t			rdev;
	struct nfs_fsid		fsid;
	__u64			fileid;
	struct timespec		atime;
	struct timespec		mtime;
	struct timespec		ctime;
	__u32			bitmap[2];	/* NFSv4 returned attribute bitmap */
	__u64			change_attr;	/* NFSv4 change attribute */
	__u64			pre_change_attr;/* pre-op NFSv4 change attribute */
	unsigned long		time_start;
};

#define NFS_ATTR_WCC		0x0001		/* pre-op WCC data    */
#define NFS_ATTR_FATTR		0x0002		/* post-op attributes */
#define NFS_ATTR_FATTR_V3	0x0004		/* NFSv3 attributes */
#define NFS_ATTR_FATTR_V4	0x0008		/* NFSv4 change attribute */
#define NFS_ATTR_FATTR_V4_REFERRAL	0x0010		/* NFSv4 referral */

/*
 * Info on the file system
 */
struct nfs_fsinfo {
	struct nfs_fattr	*fattr; /* Post-op attributes */
	__u32			rtmax;	/* max.  read transfer size */
	__u32			rtpref;	/* pref. read transfer size */
	__u32			rtmult;	/* reads should be multiple of this */
	__u32			wtmax;	/* max.  write transfer size */
	__u32			wtpref;	/* pref. write transfer size */
	__u32			wtmult;	/* writes should be multiple of this */
	__u32			dtpref;	/* pref. readdir transfer size */
	__u64			maxfilesize;
	__u32			lease_time; /* in seconds */
};

struct nfs_fsstat {
	struct nfs_fattr	*fattr; /* Post-op attributes */
	__u64			tbytes;	/* total size in bytes */
	__u64			fbytes;	/* # of free bytes */
	__u64			abytes;	/* # of bytes available to user */
	__u64			tfiles;	/* # of files */
	__u64			ffiles;	/* # of free files */
	__u64			afiles;	/* # of files available to user */
};

struct nfs2_fsstat {
	__u32			tsize;  /* Server transfer size */
	__u32			bsize;  /* Filesystem block size */
	__u32			blocks; /* No. of "bsize" blocks on filesystem */
	__u32			bfree;  /* No. of free "bsize" blocks */
	__u32			bavail; /* No. of available "bsize" blocks */
};

struct nfs_pathconf {
	struct nfs_fattr	*fattr; /* Post-op attributes */
	__u32			max_link; /* max # of hard links */
	__u32			max_namelen; /* max name length */
};

struct nfs4_change_info {
	u32			atomic;
	u64			before;
	u64			after;
};

struct nfs_seqid;
/*
 * Arguments to the open call.
 */
struct nfs_openargs {
	const struct nfs_fh *	fh;
	struct nfs_seqid *	seqid;
	int			open_flags;
	__u64                   clientid;
	__u32                   id;
	union {
		struct iattr *  attrs;    /* UNCHECKED, GUARDED */
		nfs4_verifier   verifier; /* EXCLUSIVE */
		nfs4_stateid	delegation;		/* CLAIM_DELEGATE_CUR */
		int		delegation_type;	/* CLAIM_PREVIOUS */
	} u;
	const struct qstr *	name;
	const struct nfs_server *server;	 /* Needed for ID mapping */
	const u32 *		bitmask;
	__u32			claim;
};

struct nfs_openres {
	nfs4_stateid            stateid;
	struct nfs_fh           fh;
	struct nfs4_change_info	cinfo;
	__u32                   rflags;
	struct nfs_fattr *      f_attr;
	struct nfs_fattr *      dir_attr;
	const struct nfs_server *server;
	int			delegation_type;
	nfs4_stateid		delegation;
	__u32			do_recall;
	__u64			maxsize;
};

/*
 * Arguments to the open_confirm call.
 */
struct nfs_open_confirmargs {
	const struct nfs_fh *	fh;
	nfs4_stateid *		stateid;
	struct nfs_seqid *	seqid;
};

struct nfs_open_confirmres {
	nfs4_stateid            stateid;
};

/*
 * Arguments to the close call.
 */
struct nfs_closeargs {
	struct nfs_fh *         fh;
	nfs4_stateid *		stateid;
	struct nfs_seqid *	seqid;
	int			open_flags;
	const u32 *		bitmask;
};

struct nfs_closeres {
	nfs4_stateid            stateid;
	struct nfs_fattr *	fattr;
	const struct nfs_server *server;
};
/*
 *  * Arguments to the lock,lockt, and locku call.
 *   */
struct nfs_lowner {
	__u64			clientid;
	u32			id;
};

struct nfs_lock_args {
	struct nfs_fh *		fh;
	struct file_lock *	fl;
	struct nfs_seqid *	lock_seqid;
	nfs4_stateid *		lock_stateid;
	struct nfs_seqid *	open_seqid;
	nfs4_stateid *		open_stateid;
	struct nfs_lowner	lock_owner;
	unsigned char		block : 1;
	unsigned char		reclaim : 1;
	unsigned char		new_lock_owner : 1;
};

struct nfs_lock_res {
	nfs4_stateid			stateid;
};

struct nfs_locku_args {
	struct nfs_fh *		fh;
	struct file_lock *	fl;
	struct nfs_seqid *	seqid;
	nfs4_stateid *		stateid;
};

struct nfs_locku_res {
	nfs4_stateid			stateid;
};

struct nfs_lockt_args {
	struct nfs_fh *		fh;
	struct file_lock *	fl;
	struct nfs_lowner	lock_owner;
};

struct nfs_lockt_res {
	struct file_lock *	denied; /* LOCK, LOCKT failed */
};

struct nfs4_delegreturnargs {
	const struct nfs_fh *fhandle;
	const nfs4_stateid *stateid;
	const u32 * bitmask;
};

struct nfs4_delegreturnres {
	struct nfs_fattr * fattr;
	const struct nfs_server *server;
};

/*
 * Arguments to the read call.
 */
struct nfs_readargs {
	struct nfs_fh *		fh;
	struct nfs_open_context *context;
	__u64			offset;
	__u32			count;
	unsigned int		pgbase;
	struct page **		pages;
};

struct nfs_readres {
	struct nfs_fattr *	fattr;
	__u32			count;
	int                     eof;
};

/*
 * Arguments to the write call.
 */
struct nfs_writeargs {
	struct nfs_fh *		fh;
	struct nfs_open_context *context;
	__u64			offset;
	__u32			count;
	enum nfs3_stable_how	stable;
	unsigned int		pgbase;
	struct page **		pages;
	const u32 *		bitmask;
};

struct nfs_writeverf {
	enum nfs3_stable_how	committed;
	__be32			verifier[2];
};

struct nfs_writeres {
	struct nfs_fattr *	fattr;
	struct nfs_writeverf *	verf;
	__u32			count;
	const struct nfs_server *server;
};

/*
 * Argument struct for decode_entry function
 */
struct nfs_entry {
	__u64			ino;
	__u64			cookie,
				prev_cookie;
	const char *		name;
	unsigned int		len;
	int			eof;
	struct nfs_fh *		fh;
	struct nfs_fattr *	fattr;
};

/*
 * The following types are for NFSv2 only.
 */
struct nfs_sattrargs {
	struct nfs_fh *		fh;
	struct iattr *		sattr;
};

struct nfs_diropargs {
	struct nfs_fh *		fh;
	const char *		name;
	unsigned int		len;
};

struct nfs_createargs {
	struct nfs_fh *		fh;
	const char *		name;
	unsigned int		len;
	struct iattr *		sattr;
};

struct nfs_renameargs {
	struct nfs_fh *		fromfh;
	const char *		fromname;
	unsigned int		fromlen;
	struct nfs_fh *		tofh;
	const char *		toname;
	unsigned int		tolen;
};

struct nfs_setattrargs {
	struct nfs_fh *                 fh;
	nfs4_stateid                    stateid;
	struct iattr *                  iap;
	const struct nfs_server *	server; /* Needed for name mapping */
	const u32 *			bitmask;
};

struct nfs_setaclargs {
	struct nfs_fh *			fh;
	size_t				acl_len;
	unsigned int			acl_pgbase;
	struct page **			acl_pages;
};

struct nfs_getaclargs {
	struct nfs_fh *			fh;
	size_t				acl_len;
	unsigned int			acl_pgbase;
	struct page **			acl_pages;
};

struct nfs_setattrres {
	struct nfs_fattr *              fattr;
	const struct nfs_server *	server;
};

struct nfs_linkargs {
	struct nfs_fh *		fromfh;
	struct nfs_fh *		tofh;
	const char *		toname;
	unsigned int		tolen;
};

struct nfs_symlinkargs {
	struct nfs_fh *		fromfh;
	const char *		fromname;
	unsigned int		fromlen;
	struct page **		pages;
	unsigned int		pathlen;
	struct iattr *		sattr;
};

struct nfs_readdirargs {
	struct nfs_fh *		fh;
	__u32			cookie;
	unsigned int		count;
	struct page **		pages;
};

struct nfs3_getaclargs {
	struct nfs_fh *		fh;
	int			mask;
	struct page **		pages;
};

struct nfs3_setaclargs {
	struct inode *		inode;
	int			mask;
	struct posix_acl *	acl_access;
	struct posix_acl *	acl_default;
	struct page **		pages;
};

struct nfs_diropok {
	struct nfs_fh *		fh;
	struct nfs_fattr *	fattr;
};

struct nfs_readlinkargs {
	struct nfs_fh *		fh;
	unsigned int		pgbase;
	unsigned int		pglen;
	struct page **		pages;
};

struct nfs3_sattrargs {
	struct nfs_fh *		fh;
	struct iattr *		sattr;
	unsigned int		guard;
	struct timespec		guardtime;
};

struct nfs3_diropargs {
	struct nfs_fh *		fh;
	const char *		name;
	unsigned int		len;
};

struct nfs3_accessargs {
	struct nfs_fh *		fh;
	__u32			access;
};

struct nfs3_createargs {
	struct nfs_fh *		fh;
	const char *		name;
	unsigned int		len;
	struct iattr *		sattr;
	enum nfs3_createmode	createmode;
	__be32			verifier[2];