nfs_xdr.h 35.2 KB
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#ifndef _LINUX_NFS_XDR_H
#define _LINUX_NFS_XDR_H

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#include <linux/nfsacl.h>
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#include <linux/sunrpc/gss_api.h>
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/*
 * 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)

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struct nfs4_string {
	unsigned int len;
	char *data;
};

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struct nfs_fsid {
	uint64_t		major;
	uint64_t		minor;
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};

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/*
 * 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;
}

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struct nfs4_threshold {
	__u32	bm;
	__u32	l_type;
	__u64	rd_sz;
	__u64	wr_sz;
	__u64	rd_io_sz;
	__u64	wr_io_sz;
};

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struct nfs_fattr {
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	unsigned int		valid;		/* which fields are valid */
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	umode_t			mode;
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	__u32			nlink;
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	kuid_t			uid;
	kgid_t			gid;
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	dev_t			rdev;
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	__u64			size;
	union {
		struct {
			__u32	blocksize;
			__u32	blocks;
		} nfs2;
		struct {
			__u64	used;
		} nfs3;
	} du;
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	struct nfs_fsid		fsid;
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	__u64			fileid;
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	__u64			mounted_on_fileid;
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	struct timespec		atime;
	struct timespec		mtime;
	struct timespec		ctime;
	__u64			change_attr;	/* NFSv4 change attribute */
	__u64			pre_change_attr;/* pre-op NFSv4 change attribute */
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	__u64			pre_size;	/* pre_op_attr.size	  */
	struct timespec		pre_mtime;	/* pre_op_attr.mtime	  */
	struct timespec		pre_ctime;	/* pre_op_attr.ctime	  */
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	unsigned long		time_start;
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	unsigned long		gencount;
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	struct nfs4_string	*owner_name;
	struct nfs4_string	*group_name;
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	struct nfs4_threshold	*mdsthreshold;	/* pNFS threshold hints */
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};

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#define NFS_ATTR_FATTR_TYPE		(1U << 0)
#define NFS_ATTR_FATTR_MODE		(1U << 1)
#define NFS_ATTR_FATTR_NLINK		(1U << 2)
#define NFS_ATTR_FATTR_OWNER		(1U << 3)
#define NFS_ATTR_FATTR_GROUP		(1U << 4)
#define NFS_ATTR_FATTR_RDEV		(1U << 5)
#define NFS_ATTR_FATTR_SIZE		(1U << 6)
#define NFS_ATTR_FATTR_PRESIZE		(1U << 7)
#define NFS_ATTR_FATTR_BLOCKS_USED	(1U << 8)
#define NFS_ATTR_FATTR_SPACE_USED	(1U << 9)
#define NFS_ATTR_FATTR_FSID		(1U << 10)
#define NFS_ATTR_FATTR_FILEID		(1U << 11)
#define NFS_ATTR_FATTR_ATIME		(1U << 12)
#define NFS_ATTR_FATTR_MTIME		(1U << 13)
#define NFS_ATTR_FATTR_CTIME		(1U << 14)
#define NFS_ATTR_FATTR_PREMTIME		(1U << 15)
#define NFS_ATTR_FATTR_PRECTIME		(1U << 16)
#define NFS_ATTR_FATTR_CHANGE		(1U << 17)
#define NFS_ATTR_FATTR_PRECHANGE	(1U << 18)
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#define NFS_ATTR_FATTR_V4_LOCATIONS	(1U << 19)
#define NFS_ATTR_FATTR_V4_REFERRAL	(1U << 20)
#define NFS_ATTR_FATTR_MOUNTPOINT	(1U << 21)
#define NFS_ATTR_FATTR_MOUNTED_ON_FILEID (1U << 22)
#define NFS_ATTR_FATTR_OWNER_NAME	(1U << 23)
#define NFS_ATTR_FATTR_GROUP_NAME	(1U << 24)
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#define NFS_ATTR_FATTR_V4_SECURITY_LABEL (1U << 25)
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#define NFS_ATTR_FATTR (NFS_ATTR_FATTR_TYPE \
		| NFS_ATTR_FATTR_MODE \
		| NFS_ATTR_FATTR_NLINK \
		| NFS_ATTR_FATTR_OWNER \
		| NFS_ATTR_FATTR_GROUP \
		| NFS_ATTR_FATTR_RDEV \
		| NFS_ATTR_FATTR_SIZE \
		| NFS_ATTR_FATTR_FSID \
		| NFS_ATTR_FATTR_FILEID \
		| NFS_ATTR_FATTR_ATIME \
		| NFS_ATTR_FATTR_MTIME \
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		| NFS_ATTR_FATTR_CTIME \
		| NFS_ATTR_FATTR_CHANGE)
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#define NFS_ATTR_FATTR_V2 (NFS_ATTR_FATTR \
		| NFS_ATTR_FATTR_BLOCKS_USED)
#define NFS_ATTR_FATTR_V3 (NFS_ATTR_FATTR \
		| NFS_ATTR_FATTR_SPACE_USED)
#define NFS_ATTR_FATTR_V4 (NFS_ATTR_FATTR \
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		| NFS_ATTR_FATTR_SPACE_USED \
		| NFS_ATTR_FATTR_V4_SECURITY_LABEL)
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/*
 * 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;
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	struct timespec		time_delta; /* server time granularity */
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	__u32			lease_time; /* in seconds */
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	__u32			layouttype; /* supported pnfs layout driver */
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	__u32			blksize; /* preferred pnfs io block size */
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};

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;
};

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struct nfs_seqid;
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/* nfs41 sessions channel attributes */
struct nfs4_channel_attrs {
	u32			max_rqst_sz;
	u32			max_resp_sz;
	u32			max_resp_sz_cached;
	u32			max_ops;
	u32			max_reqs;
};

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struct nfs4_slot;
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struct nfs4_sequence_args {
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	struct nfs4_slot	*sa_slot;
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	u8			sa_cache_this : 1,
				sa_privileged : 1;
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};

struct nfs4_sequence_res {
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	struct nfs4_slot	*sr_slot;	/* slot used to send request */
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	unsigned long		sr_timestamp;
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	int			sr_status;	/* sequence operation status */
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	u32			sr_status_flags;
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	u32			sr_highest_slotid;
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	u32			sr_target_highest_slotid;
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};

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struct nfs4_get_lease_time_args {
	struct nfs4_sequence_args	la_seq_args;
};

struct nfs4_get_lease_time_res {
	struct nfs4_sequence_res	lr_seq_res;
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	struct nfs_fsinfo	       *lr_fsinfo;
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};

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#define PNFS_LAYOUT_MAXSIZE 4096

struct nfs4_layoutdriver_data {
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	struct page **pages;
	__u32 pglen;
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	__u32 len;
};

struct pnfs_layout_range {
	u32 iomode;
	u64 offset;
	u64 length;
};

struct nfs4_layoutget_args {
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	struct nfs4_sequence_args seq_args;
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	__u32 type;
	struct pnfs_layout_range range;
	__u64 minlength;
	__u32 maxcount;
	struct inode *inode;
	struct nfs_open_context *ctx;
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	nfs4_stateid stateid;
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	unsigned long timestamp;
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	struct nfs4_layoutdriver_data layout;
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};

struct nfs4_layoutget_res {
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	struct nfs4_sequence_res seq_res;
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	__u32 return_on_close;
	struct pnfs_layout_range range;
	__u32 type;
	nfs4_stateid stateid;
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	struct nfs4_layoutdriver_data *layoutp;
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};

struct nfs4_layoutget {
	struct nfs4_layoutget_args args;
	struct nfs4_layoutget_res res;
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	struct rpc_cred *cred;
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	gfp_t gfp_flags;
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};

struct nfs4_getdeviceinfo_args {
	struct nfs4_sequence_args seq_args;
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	struct pnfs_device *pdev;
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};

struct nfs4_getdeviceinfo_res {
	struct nfs4_sequence_res seq_res;
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	struct pnfs_device *pdev;
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};

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struct nfs4_layoutcommit_args {
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	struct nfs4_sequence_args seq_args;
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	nfs4_stateid stateid;
	__u64 lastbytewritten;
	struct inode *inode;
	const u32 *bitmask;
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	size_t layoutupdate_len;
	struct page *layoutupdate_page;
	struct page **layoutupdate_pages;
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};

struct nfs4_layoutcommit_res {
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	struct nfs4_sequence_res seq_res;
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	struct nfs_fattr *fattr;
	const struct nfs_server *server;
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	int status;
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};

struct nfs4_layoutcommit_data {
	struct rpc_task task;
	struct nfs_fattr fattr;
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	struct list_head lseg_list;
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	struct rpc_cred *cred;
	struct nfs4_layoutcommit_args args;
	struct nfs4_layoutcommit_res res;
};

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struct nfs4_layoutreturn_args {
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	struct nfs4_sequence_args seq_args;
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	struct pnfs_layout_hdr *layout;
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	struct inode *inode;
	nfs4_stateid stateid;
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	__u32   layout_type;
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};

struct nfs4_layoutreturn_res {
	struct nfs4_sequence_res seq_res;
	u32 lrs_present;
	nfs4_stateid stateid;
};

struct nfs4_layoutreturn {
	struct nfs4_layoutreturn_args args;
	struct nfs4_layoutreturn_res res;
	struct rpc_cred *cred;
	struct nfs_client *clp;
	int rpc_status;
};

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struct stateowner_id {
	__u64	create_time;
	__u32	uniquifier;
};

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/*
 * Arguments to the open call.
 */
struct nfs_openargs {
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	struct nfs4_sequence_args	seq_args;
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	const struct nfs_fh *	fh;
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	struct nfs_seqid *	seqid;
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	int			open_flags;
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	fmode_t			fmode;
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	u32			access;
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	__u64                   clientid;
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	struct stateowner_id	id;
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	union {
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		struct {
			struct iattr *  attrs;    /* UNCHECKED, GUARDED */
			nfs4_verifier   verifier; /* EXCLUSIVE */
		};
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		nfs4_stateid	delegation;		/* CLAIM_DELEGATE_CUR */
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		fmode_t		delegation_type;	/* CLAIM_PREVIOUS */
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	} u;
	const struct qstr *	name;
	const struct nfs_server *server;	 /* Needed for ID mapping */
	const u32 *		bitmask;
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	const u32 *		open_bitmap;
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	__u32			claim;
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	enum createmode4	createmode;
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	const struct nfs4_label *label;
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};

struct nfs_openres {
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	struct nfs4_sequence_res	seq_res;
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	nfs4_stateid            stateid;
	struct nfs_fh           fh;
	struct nfs4_change_info	cinfo;
	__u32                   rflags;
	struct nfs_fattr *      f_attr;
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	struct nfs4_label	*f_label;
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	struct nfs_seqid *	seqid;
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	const struct nfs_server *server;
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	fmode_t			delegation_type;
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	nfs4_stateid		delegation;
	__u32			do_recall;
	__u64			maxsize;
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	__u32			attrset[NFS4_BITMAP_SIZE];
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	struct nfs4_string	*owner;
	struct nfs4_string	*group_owner;
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	__u32			access_request;
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	__u32			access_supported;
	__u32			access_result;
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};

/*
 * Arguments to the open_confirm call.
 */
struct nfs_open_confirmargs {
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	struct nfs4_sequence_args	seq_args;
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	const struct nfs_fh *	fh;
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	nfs4_stateid *		stateid;
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	struct nfs_seqid *	seqid;
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};

struct nfs_open_confirmres {
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	struct nfs4_sequence_res	seq_res;
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	nfs4_stateid            stateid;
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	struct nfs_seqid *	seqid;
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};

/*
 * Arguments to the close call.
 */
struct nfs_closeargs {
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	struct nfs4_sequence_args	seq_args;
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	struct nfs_fh *         fh;
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	nfs4_stateid *		stateid;
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	struct nfs_seqid *	seqid;
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	fmode_t			fmode;
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	const u32 *		bitmask;
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};

struct nfs_closeres {
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	struct nfs4_sequence_res	seq_res;
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	nfs4_stateid            stateid;
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	struct nfs_fattr *	fattr;
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	struct nfs_seqid *	seqid;
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	const struct nfs_server *server;
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};
/*
 *  * Arguments to the lock,lockt, and locku call.
 *   */
struct nfs_lowner {
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	__u64			clientid;
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	__u64			id;
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	dev_t			s_dev;
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};

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struct nfs_lock_args {
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	struct nfs4_sequence_args	seq_args;
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	struct nfs_fh *		fh;
	struct file_lock *	fl;
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	struct nfs_seqid *	lock_seqid;
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	nfs4_stateid *		lock_stateid;
	struct nfs_seqid *	open_seqid;
	nfs4_stateid *		open_stateid;
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	struct nfs_lowner	lock_owner;
	unsigned char		block : 1;
	unsigned char		reclaim : 1;
	unsigned char		new_lock_owner : 1;
};

struct nfs_lock_res {
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	struct nfs4_sequence_res	seq_res;
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	nfs4_stateid		stateid;
	struct nfs_seqid *	lock_seqid;
	struct nfs_seqid *	open_seqid;
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};

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struct nfs_locku_args {
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	struct nfs4_sequence_args	seq_args;
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	struct nfs_fh *		fh;
	struct file_lock *	fl;
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	struct nfs_seqid *	seqid;
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	nfs4_stateid *		stateid;
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};

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struct nfs_locku_res {
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	struct nfs4_sequence_res	seq_res;
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	nfs4_stateid		stateid;
	struct nfs_seqid *	seqid;
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};

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struct nfs_lockt_args {
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	struct nfs4_sequence_args	seq_args;
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	struct nfs_fh *		fh;
	struct file_lock *	fl;
	struct nfs_lowner	lock_owner;
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};

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struct nfs_lockt_res {
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	struct nfs4_sequence_res	seq_res;
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	struct file_lock *	denied; /* LOCK, LOCKT failed */
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};

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struct nfs_release_lockowner_args {
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	struct nfs4_sequence_args	seq_args;
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	struct nfs_lowner	lock_owner;
};

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struct nfs_release_lockowner_res {
	struct nfs4_sequence_res	seq_res;
};

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struct nfs4_delegreturnargs {
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	struct nfs4_sequence_args	seq_args;
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	const struct nfs_fh *fhandle;
	const nfs4_stateid *stateid;
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	const u32 * bitmask;
};

struct nfs4_delegreturnres {
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	struct nfs4_sequence_res	seq_res;
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	struct nfs_fattr * fattr;
	const struct nfs_server *server;
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};

/*
 * Arguments to the write call.
 */
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struct nfs_write_verifier {
	char			data[8];
};

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struct nfs_writeverf {
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	struct nfs_write_verifier verifier;
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	enum nfs3_stable_how	committed;
};

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/*
 * Arguments shared by the read and write call.
 */
struct nfs_pgio_args {
	struct nfs4_sequence_args	seq_args;
	struct nfs_fh *		fh;
	struct nfs_open_context *context;
	struct nfs_lock_context *lock_context;
	nfs4_stateid		stateid;
	__u64			offset;
	__u32			count;
	unsigned int		pgbase;
	struct page **		pages;
	const u32 *		bitmask;	/* used by write */
	enum nfs3_stable_how	stable;		/* used by write */
};

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struct nfs_pgio_res {
	struct nfs4_sequence_res	seq_res;
	struct nfs_fattr *	fattr;
	__u32			count;
	int			eof;		/* used by read */
	struct nfs_writeverf *	verf;		/* used by write */
	const struct nfs_server *server;	/* used by write */

};

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/*
 * Arguments to the commit call.
 */
struct nfs_commitargs {
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	struct nfs4_sequence_args	seq_args;
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	struct nfs_fh		*fh;
	__u64			offset;
	__u32			count;
	const u32		*bitmask;
};

struct nfs_commitres {
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	struct nfs4_sequence_res	seq_res;
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	struct nfs_fattr	*fattr;
	struct nfs_writeverf	*verf;
	const struct nfs_server *server;
};

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/*
 * Common arguments to the unlink call
 */
struct nfs_removeargs {
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	struct nfs4_sequence_args	seq_args;
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	const struct nfs_fh	*fh;
	struct qstr		name;
};

struct nfs_removeres {
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	struct nfs4_sequence_res 	seq_res;
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	const struct nfs_server *server;
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	struct nfs_fattr	*dir_attr;
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	struct nfs4_change_info	cinfo;
};

556 557 558 559
/*
 * Common arguments to the rename call
 */
struct nfs_renameargs {
560
	struct nfs4_sequence_args	seq_args;
561 562 563 564 565 566
	const struct nfs_fh		*old_dir;
	const struct nfs_fh		*new_dir;
	const struct qstr		*old_name;
	const struct qstr		*new_name;
};

567
struct nfs_renameres {
568
	struct nfs4_sequence_res	seq_res;
569 570 571 572 573 574 575
	const struct nfs_server		*server;
	struct nfs4_change_info		old_cinfo;
	struct nfs_fattr		*old_fattr;
	struct nfs4_change_info		new_cinfo;
	struct nfs_fattr		*new_fattr;
};

576
/* parsed sec= options */
577
#define NFS_AUTH_INFO_MAX_FLAVORS 12 /* see fs/nfs/super.c */
578 579
struct nfs_auth_info {
	unsigned int            flavor_len;
580
	rpc_authflavor_t        flavors[NFS_AUTH_INFO_MAX_FLAVORS];
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};

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/*
 * 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;
595
	struct nfs4_label  *label;
596
	unsigned char		d_type;
597
	struct nfs_server *	server;
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};

/*
 * 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_setattrargs {
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	struct nfs4_sequence_args 	seq_args;
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	struct nfs_fh *                 fh;
	nfs4_stateid                    stateid;
	struct iattr *                  iap;
	const struct nfs_server *	server; /* Needed for name mapping */
	const u32 *			bitmask;
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	const struct nfs4_label		*label;
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};

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struct nfs_setaclargs {
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	struct nfs4_sequence_args	seq_args;
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	struct nfs_fh *			fh;
	size_t				acl_len;
	unsigned int			acl_pgbase;
	struct page **			acl_pages;
};

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struct nfs_setaclres {
	struct nfs4_sequence_res	seq_res;
};

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struct nfs_getaclargs {
644
	struct nfs4_sequence_args 	seq_args;
645 646 647 648 649 650
	struct nfs_fh *			fh;
	size_t				acl_len;
	unsigned int			acl_pgbase;
	struct page **			acl_pages;
};

651
/* getxattr ACL interface flags */
652
#define NFS4_ACL_TRUNC		0x0001	/* ACL was truncated */
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struct nfs_getaclres {
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	struct nfs4_sequence_res	seq_res;
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	size_t				acl_len;
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	size_t				acl_data_offset;
	int				acl_flags;
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	struct page *			acl_scratch;
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};

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struct nfs_setattrres {
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	struct nfs4_sequence_res	seq_res;
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	struct nfs_fattr *              fattr;
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	struct nfs4_label		*label;
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	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;
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	struct page **		pages;
	unsigned int		pathlen;
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	struct iattr *		sattr;
};

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

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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;
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	size_t			len;
	unsigned int		npages;
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	struct page **		pages;
};

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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;
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	__be32			verifier[2];
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};

struct nfs3_mkdirargs {
	struct nfs_fh *		fh;
	const char *		name;
	unsigned int		len;
	struct iattr *		sattr;
};

struct nfs3_symlinkargs {
	struct nfs_fh *		fromfh;
	const char *		fromname;
	unsigned int		fromlen;
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	struct page **		pages;
	unsigned int		pathlen;
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	struct iattr *		sattr;
};

struct nfs3_mknodargs {
	struct nfs_fh *		fh;
	const char *		name;
	unsigned int		len;
	enum nfs3_ftype		type;
	struct iattr *		sattr;
	dev_t			rdev;
};

struct nfs3_linkargs {
	struct nfs_fh *		fromfh;
	struct nfs_fh *		tofh;
	const char *		toname;
	unsigned int		tolen;
};

struct nfs3_readdirargs {
	struct nfs_fh *		fh;
	__u64			cookie;
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	__be32			verf[2];
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	int			plus;
	unsigned int            count;
	struct page **		pages;
};

struct nfs3_diropres {
	struct nfs_fattr *	dir_attr;
	struct nfs_fh *		fh;
	struct nfs_fattr *	fattr;
};

struct nfs3_accessres {
	struct nfs_fattr *	fattr;
	__u32			access;
};

struct nfs3_readlinkargs {
	struct nfs_fh *		fh;
	unsigned int		pgbase;
	unsigned int		pglen;
	struct page **		pages;
};

struct nfs3_linkres {
	struct nfs_fattr *	dir_attr;
	struct nfs_fattr *	fattr;
};

struct nfs3_readdirres {
	struct nfs_fattr *	dir_attr;
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	__be32 *		verf;
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	int			plus;
};

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struct nfs3_getaclres {
	struct nfs_fattr *	fattr;
	int			mask;
	unsigned int		acl_access_count;
	unsigned int		acl_default_count;
	struct posix_acl *	acl_access;
	struct posix_acl *	acl_default;
};

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#if IS_ENABLED(CONFIG_NFS_V4)
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typedef u64 clientid4;

struct nfs4_accessargs {
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	struct nfs4_sequence_args	seq_args;
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	const struct nfs_fh *		fh;
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	const u32 *			bitmask;
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	u32				access;
};

struct nfs4_accessres {
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	struct nfs4_sequence_res	seq_res;
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	const struct nfs_server *	server;
	struct nfs_fattr *		fattr;
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	u32				supported;
	u32				access;
};

struct nfs4_create_arg {
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	struct nfs4_sequence_args 	seq_args;
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	u32				ftype;
	union {
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		struct {
			struct page **	pages;
			unsigned int	len;
		} symlink;   /* NF4LNK */
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		struct {
			u32		specdata1;
			u32		specdata2;
		} device;    /* NF4BLK, NF4CHR */
	} u;
	const struct qstr *		name;
	const struct nfs_server *	server;
	const struct iattr *		attrs;
	const struct nfs_fh *		dir_fh;
	const u32 *			bitmask;
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	const struct nfs4_label		*label;
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};

struct nfs4_create_res {
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	struct nfs4_sequence_res	seq_res;
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	const struct nfs_server *	server;
	struct nfs_fh *			fh;
	struct nfs_fattr *		fattr;
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	struct nfs4_label		*label;
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	struct nfs4_change_info		dir_cinfo;
};

struct nfs4_fsinfo_arg {
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	struct nfs4_sequence_args	seq_args;
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	const struct nfs_fh *		fh;
	const u32 *			bitmask;
};

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struct nfs4_fsinfo_res {
	struct nfs4_sequence_res	seq_res;
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	struct nfs_fsinfo	       *fsinfo;
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};

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struct nfs4_getattr_arg {
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	struct nfs4_sequence_args	seq_args;
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	const struct nfs_fh *		fh;
	const u32 *			bitmask;
};

struct nfs4_getattr_res {
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	struct nfs4_sequence_res	seq_res;
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	const struct nfs_server *	server;
	struct nfs_fattr *		fattr;
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	struct nfs4_label		*label;
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};

struct nfs4_link_arg {
899
	struct nfs4_sequence_args 	seq_args;
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	const struct nfs_fh *		fh;
	const struct nfs_fh *		dir_fh;
	const struct qstr *		name;
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	const u32 *			bitmask;
};

struct nfs4_link_res {
907
	struct nfs4_sequence_res	seq_res;
908 909
	const struct nfs_server *	server;
	struct nfs_fattr *		fattr;
910
	struct nfs4_label		*label;
911 912
	struct nfs4_change_info		cinfo;
	struct nfs_fattr *		dir_attr;
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};

915

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struct nfs4_lookup_arg {
917
	struct nfs4_sequence_args	seq_args;
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	const struct nfs_fh *		dir_fh;
	const struct qstr *		name;
	const u32 *			bitmask;
};

struct nfs4_lookup_res {
924
	struct nfs4_sequence_res	seq_res;
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	const struct nfs_server *	server;
	struct nfs_fattr *		fattr;
	struct nfs_fh *			fh;
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	struct nfs4_label		*label;
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};

struct nfs4_lookup_root_arg {
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	struct nfs4_sequence_args	seq_args;
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	const u32 *			bitmask;
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};

struct nfs4_pathconf_arg {
937
	struct nfs4_sequence_args	seq_args;
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	const struct nfs_fh *		fh;
	const u32 *			bitmask;
};

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struct nfs4_pathconf_res {
	struct nfs4_sequence_res	seq_res;
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	struct nfs_pathconf	       *pathconf;
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};

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struct nfs4_readdir_arg {
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	struct nfs4_sequence_args	seq_args;
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	const struct nfs_fh *		fh;
	u64				cookie;
	nfs4_verifier			verifier;
	u32				count;
	struct page **			pages;	/* zero-copy data */
	unsigned int			pgbase;	/* zero-copy data */
	const u32 *			bitmask;
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	int				plus;
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};

struct nfs4_readdir_res {
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	struct nfs4_sequence_res	seq_res;
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	nfs4_verifier			verifier;
	unsigned int			pgbase;
};

struct nfs4_readlink {
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	struct nfs4_sequence_args	seq_args;
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	const struct nfs_fh *		fh;
	unsigned int			pgbase;
	unsigned int			pglen;   /* zero-copy data */
	struct page **			pages;   /* zero-copy data */
};

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struct nfs4_readlink_res {
	struct nfs4_sequence_res	seq_res;
};

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#define NFS4_SETCLIENTID_NAMELEN	(127)
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struct nfs4_setclientid {
979
	const nfs4_verifier *		sc_verifier;
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	unsigned int			sc_name_len;
981
	char				sc_name[NFS4_SETCLIENTID_NAMELEN + 1];
982
	u32				sc_prog;
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	unsigned int			sc_netid_len;
984
	char				sc_netid[RPCBIND_MAXNETIDLEN + 1];
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	unsigned int			sc_uaddr_len;
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	char				sc_uaddr[RPCBIND_MAXUADDRLEN + 1];
987
	u32				sc_cb_ident;
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	struct rpc_cred			*sc_cred;
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};

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struct nfs4_setclientid_res {
	u64				clientid;
	nfs4_verifier			confirm;
};

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struct nfs4_statfs_arg {
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	struct nfs4_sequence_args	seq_args;
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	const struct nfs_fh *		fh;
	const u32 *			bitmask;
};

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struct nfs4_statfs_res {
	struct nfs4_sequence_res	seq_res;
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	struct nfs_fsstat	       *fsstat;
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};

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struct nfs4_server_caps_arg {
	struct nfs4_sequence_args	seq_args;
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	struct nfs_fh		       *fhandle;
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};

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struct nfs4_server_caps_res {
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	struct nfs4_sequence_res	seq_res;
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	u32				attr_bitmask[3];
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	u32				acl_bitmask;
	u32				has_links;
	u32				has_symlinks;
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	u32				fh_expire_type;
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};

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#define NFS4_PATHNAME_MAXCOMPONENTS 512
struct nfs4_pathname {
	unsigned int ncomponents;
	struct nfs4_string components[NFS4_PATHNAME_MAXCOMPONENTS];
};

#define NFS4_FS_LOCATION_MAXSERVERS 10
struct nfs4_fs_location {
	unsigned int nservers;
	struct nfs4_string servers[NFS4_FS_LOCATION_MAXSERVERS];
	struct nfs4_pathname rootpath;
};

#define NFS4_FS_LOCATIONS_MAXENTRIES 10
struct nfs4_fs_locations {
1036 1037
	struct nfs_fattr fattr;
	const struct nfs_server *server;
1038
	struct nfs4_pathname fs_path;
1039
	int nlocations;
1040
	struct nfs4_fs_location locations[NFS4_FS_LOCATIONS_MAXENTRIES];
1041 1042 1043
};

struct nfs4_fs_locations_arg {
1044
	struct nfs4_sequence_args	seq_args;
1045
	const struct nfs_fh *dir_fh;
1046
	const struct nfs_fh *fh;
1047 1048 1049
	const struct qstr *name;
	struct page *page;
	const u32 *bitmask;
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	clientid4 clientid;
	unsigned char migration:1, renew:1;
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};

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struct nfs4_fs_locations_res {
	struct nfs4_sequence_res	seq_res;
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	struct nfs4_fs_locations       *fs_locations;
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	unsigned char			migration:1, renew:1;
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};

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struct nfs4_secinfo4 {
	u32			flavor;
	struct rpcsec_gss_info	flavor_info;
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};

struct nfs4_secinfo_flavors {
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	unsigned int		num_flavors;
	struct nfs4_secinfo4	flavors[0];
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};

struct nfs4_secinfo_arg {
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	struct nfs4_sequence_args	seq_args;
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	const struct nfs_fh		*dir_fh;
	const struct qstr		*name;
};

struct nfs4_secinfo_res {
	struct nfs4_sequence_res	seq_res;
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	struct nfs4_secinfo_flavors	*flavors;
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};

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struct nfs4_fsid_present_arg {
	struct nfs4_sequence_args	seq_args;
	const struct nfs_fh		*fh;
	clientid4			clientid;
	unsigned char			renew:1;
};

struct nfs4_fsid_present_res {
	struct nfs4_sequence_res	seq_res;
	struct nfs_fh			*fh;
	unsigned char			renew:1;
};

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#endif /* CONFIG_NFS_V4 */

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struct nfstime4 {
	u64	seconds;
	u32	nseconds;
};

#ifdef CONFIG_NFS_V4_1
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struct pnfs_commit_bucket {
	struct list_head written;
	struct list_head committing;
	struct pnfs_layout_segment *wlseg;
	struct pnfs_layout_segment *clseg;
1108
	struct nfs_writeverf direct_verf;
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};

struct pnfs_ds_commit_info {
	int nwritten;
	int ncommitting;
	int nbuckets;
	struct pnfs_commit_bucket *buckets;
};

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#define NFS4_OP_MAP_NUM_LONGS \
	DIV_ROUND_UP(LAST_NFS4_OP, 8 * sizeof(unsigned long))
#define NFS4_OP_MAP_NUM_WORDS \
	(NFS4_OP_MAP_NUM_LONGS * sizeof(unsigned long) / sizeof(u32))
struct nfs4_op_map {
	union {
		unsigned long longs[NFS4_OP_MAP_NUM_LONGS];
		u32 words[NFS4_OP_MAP_NUM_WORDS];
	} u;
};

struct nfs41_state_protection {
	u32 how;
	struct nfs4_op_map enforce;
	struct nfs4_op_map allow;
};

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#define NFS4_EXCHANGE_ID_LEN	(48)
struct nfs41_exchange_id_args {
	struct nfs_client		*client;
	nfs4_verifier			*verifier;
	unsigned int 			id_len;
	char 				id[NFS4_EXCHANGE_ID_LEN];
	u32				flags;
1142
	struct nfs41_state_protection	state_protect;
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};

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struct nfs41_server_owner {
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	uint64_t			minor_id;
	uint32_t			major_id_sz;
	char				major_id[NFS4_OPAQUE_LIMIT];
};

1151
struct nfs41_server_scope {
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	uint32_t			server_scope_sz;
	char 				server_scope[NFS4_OPAQUE_LIMIT];
};

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struct nfs41_impl_id {
	char				domain[NFS4_OPAQUE_LIMIT + 1];
	char				name[NFS4_OPAQUE_LIMIT + 1];
	struct nfstime4			date;
};

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struct nfs41_bind_conn_to_session_res {
	struct nfs4_session		*session;
	u32				dir;
	bool				use_conn_in_rdma_mode;
};

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struct nfs41_exchange_id_res {
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	u64				clientid;
	u32				seqid;
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	u32				flags;
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	struct nfs41_server_owner	*server_owner;
1173
	struct nfs41_server_scope	*server_scope;
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	struct nfs41_impl_id		*impl_id;
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	struct nfs41_state_protection	state_protect;
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};
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struct nfs41_create_session_args {
	struct nfs_client	       *client;
	uint32_t			flags;
	uint32_t			cb_program;
	struct nfs4_channel_attrs	fc_attrs;	/* Fore Channel */
	struct nfs4_channel_attrs	bc_attrs;	/* Back Channel */
};

struct nfs41_create_session_res {
	struct nfs_client	       *client;
};
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struct nfs41_reclaim_complete_args {
1191
	struct nfs4_sequence_args	seq_args;
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	/* In the future extend to include curr_fh for use with migration */
	unsigned char			one_fs:1;
};

struct nfs41_reclaim_complete_res {
	struct nfs4_sequence_res	seq_res;
};
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#define SECINFO_STYLE_CURRENT_FH 0
#define SECINFO_STYLE_PARENT 1
struct nfs41_secinfo_no_name_args {
	struct nfs4_sequence_args	seq_args;
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	int				style;
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};

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struct nfs41_test_stateid_args {
	struct nfs4_sequence_args	seq_args;
1209
	nfs4_stateid			*stateid;
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};

struct nfs41_test_stateid_res {
	struct nfs4_sequence_res	seq_res;
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	unsigned int			status;
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};

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struct nfs41_free_stateid_args {
	struct nfs4_sequence_args	seq_args;
1219
	nfs4_stateid			stateid;
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};

struct nfs41_free_stateid_res {
	struct nfs4_sequence_res	seq_res;
1224
	unsigned int			status;
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};

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static inline void
nfs_free_pnfs_ds_cinfo(struct pnfs_ds_commit_info *cinfo)
{
	kfree(cinfo->buckets);
}

1233 1234 1235 1236 1237
#else

struct pnfs_ds_commit_info {
};

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static inline void
nfs_free_pnfs_ds_cinfo(struct pnfs_ds_commit_info *cinfo)
{
}

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#endif /* CONFIG_NFS_V4_1 */

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#ifdef CONFIG_NFS_V4_2
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struct nfs42_falloc_args {
	struct nfs4_sequence_args	seq_args;

	struct nfs_fh			*falloc_fh;
	nfs4_stateid			 falloc_stateid;
	u64				 falloc_offset;
	u64				 falloc_length;
};

struct nfs42_falloc_res {
	struct nfs4_sequence_res	seq_res;
	unsigned int			status;
};

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struct nfs42_seek_args {
	struct nfs4_sequence_args	seq_args;

	struct nfs_fh			*sa_fh;
	nfs4_stateid			sa_stateid;
	u64				sa_offset;
	u32				sa_what;
};

struct nfs42_seek_res {
	struct nfs4_sequence_res	seq_res;
	unsigned int			status;

	u32	sr_eof;
	u64	sr_offset;
};
#endif

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struct nfs_page;

1280 1281
#define NFS_PAGEVEC_SIZE	(8U)

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struct nfs_page_array {
	struct page		**pagevec;
	unsigned int		npages;		/* Max length of pagevec */
	struct page		*page_array[NFS_PAGEVEC_SIZE];
};

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/* used as flag bits in nfs_pgio_header */
enum {
	NFS_IOHDR_ERROR = 0,
	NFS_IOHDR_EOF,
	NFS_IOHDR_REDO,
};

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struct nfs_pgio_header {
	struct inode		*inode;
	struct rpc_cred		*cred;
	struct list_head	pages;
	struct nfs_page		*req;
1300
	struct nfs_writeverf	verf;		/* Used for writes */
1301
	struct pnfs_layout_segment *lseg;
1302
	loff_t			io_start;
1303
	const struct rpc_call_ops *mds_ops;
1304
	void (*release) (struct nfs_pgio_header *hdr);
1305
	const struct nfs_pgio_completion_ops *completion_ops;
1306
	const struct nfs_rw_ops	*rw_ops;
1307
	struct nfs_direct_req	*dreq;
1308
	void			*layout_private;
1309 1310
	spinlock_t		lock;
	/* fields protected by lock */
1311
	int			pnfs_error;
1312 1313 1314
	int			error;		/* merge with pnfs_error */
	unsigned long		good_bytes;	/* boundary of good data */
	unsigned long		flags;
1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328

	/*
	 * rpc data
	 */
	struct rpc_task		task;
	struct nfs_fattr	fattr;
	struct nfs_pgio_args	args;		/* argument struct */
	struct nfs_pgio_res	res;		/* result struct */
	unsigned long		timestamp;	/* For lease renewal */
	int (*pgio_done_cb)(struct rpc_task *, struct nfs_pgio_header *);
	__u64			mds_offset;	/* Filelayout dense stripe */
	struct nfs_page_array	page_array;
	struct nfs_client	*ds_clp;	/* pNFS data server */
	int			ds_idx;		/* ds index if ds_clp is set */
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};

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struct nfs_mds_commit_info {
	atomic_t rpcs_out;
	unsigned long		ncommit;
	struct list_head	list;
};

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struct nfs_commit_data;
struct nfs_inode;
struct nfs_commit_completion_ops {
	void (*error_cleanup) (struct nfs_inode *nfsi);
	void (*completion) (struct nfs_commit_data *data);
};

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struct nfs_commit_info {
	spinlock_t			*lock;
	struct nfs_mds_commit_info	*mds;
	struct pnfs_ds_commit_info	*ds;
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	struct nfs_direct_req		*dreq;	/* O_DIRECT request */
1349
	const struct nfs_commit_completion_ops *completion_ops;
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};

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struct nfs_commit_data {
	struct rpc_task		task;
	struct inode		*inode;
	struct rpc_cred		*cred;
	struct nfs_fattr	fattr;
	struct nfs_writeverf	verf;
	struct list_head	pages;		/* Coalesced requests we wish to flush */
	struct list_head	list;		/* lists of struct nfs_write_data */
	struct nfs_direct_req	*dreq;		/* O_DIRECT request */
	struct nfs_commitargs	args;		/* argument struct */
	struct nfs_commitres	res;		/* result struct */
	struct nfs_open_context *context;
	struct pnfs_layout_segment *lseg;
	struct nfs_client	*ds_clp;	/* pNFS data server */
	int			ds_commit_index;
1367
	loff_t			lwb;
1368
	const struct rpc_call_ops *mds_ops;
1369
	const struct nfs_commit_completion_ops *completion_ops;
1370 1371 1372
	int (*commit_done_cb) (struct rpc_task *task, struct nfs_commit_data *data);
};

1373 1374
struct nfs_pgio_completion_ops {
	void	(*error_cleanup)(struct list_head *head);
1375
	void	(*init_hdr)(struct nfs_pgio_header *hdr);
1376 1377 1378
	void	(*completion)(struct nfs_pgio_header *hdr);
};

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struct nfs_unlinkdata {
	struct hlist_node list;
	struct nfs_removeargs args;
	struct nfs_removeres res;
	struct inode *dir;
	struct rpc_cred	*cred;
	struct nfs_fattr dir_attr;
1386
	long timeout;
1387 1388
};

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struct nfs_renamedata {
	struct nfs_renameargs	args;
	struct nfs_renameres	res;
	struct rpc_cred		*cred;
	struct inode		*old_dir;
	struct dentry		*old_dentry;
	struct nfs_fattr	old_fattr;
	struct inode		*new_dir;
	struct dentry		*new_dentry;
	struct nfs_fattr	new_fattr;
1399
	void (*complete)(struct rpc_task *, struct nfs_renamedata *);
1400
	long timeout;
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};

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struct nfs_access_entry;
1404
struct nfs_client;
1405
struct rpc_timeout;
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struct nfs_subversion;
struct nfs_mount_info;
1408
struct nfs_client_initdata;
1409
struct nfs_pageio_descriptor;
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/*
 * RPC procedure vector for NFSv2/NFSv3 demuxing
 */
struct nfs_rpc_ops {
1415
	u32	version;		/* Protocol version */
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	const struct dentry_operations *dentry_ops;
1417 1418
	const struct inode_operations *dir_inode_ops;
	const struct inode_operations *file_inode_ops;
1419
	const struct file_operations *file_ops;
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	int	(*getroot) (struct nfs_server *, struct nfs_fh *,
			    struct nfs_fsinfo *);
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	struct vfsmount *(*submount) (struct nfs_server *, struct dentry *,
				      struct nfs_fh *, struct nfs_fattr *);
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	struct dentry *(*try_mount) (int, const char *, struct nfs_mount_info *,
				     struct nfs_subversion *);
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	int	(*getattr) (struct nfs_server *, struct nfs_fh *,
1428
			    struct nfs_fattr *, struct nfs4_label *);
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	int	(*setattr) (struct dentry *, struct nfs_fattr *,
			    struct iattr *);
1431
	int	(*lookup)  (struct inode *, struct qstr *,
1432 1433
			    struct nfs_fh *, struct nfs_fattr *,
			    struct nfs4_label *);
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	int	(*access)  (struct inode *, struct nfs_access_entry *);
	int	(*readlink)(struct inode *, struct page *, unsigned int,
			    unsigned int);
	int	(*create)  (struct inode *, struct dentry *,
1438
			    struct iattr *, int);
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	int	(*remove)  (struct inode *, struct qstr *);
1440
	void	(*unlink_setup)  (struct rpc_message *, struct inode *dir);
1441
	void	(*unlink_rpc_prepare) (struct rpc_task *, struct nfs_unlinkdata *);
1442
	int	(*unlink_done) (struct rpc_task *, struct inode *);
1443
	void	(*rename_setup)  (struct rpc_message *msg, struct inode *dir);
1444
	void	(*rename_rpc_prepare)(struct rpc_task *task, struct nfs_renamedata *);
1445
	int	(*rename_done) (struct rpc_task *task, struct inode *old_dir, struct inode *new_dir);
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	int	(*link)    (struct inode *, struct inode *, struct qstr *);
1447 1448
	int	(*symlink) (struct inode *, struct dentry *, struct page *,
			    unsigned int, struct iattr *);
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	int	(*mkdir)   (struct inode *, struct dentry *, struct iattr *);
	int	(*rmdir)   (struct inode *, struct qstr *);
	int	(*readdir) (struct dentry *, struct rpc_cred *,
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			    u64, struct page **, unsigned int, int);
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	int	(*mknod)   (struct inode *, struct dentry *, struct iattr *,
			    dev_t);
	int	(*statfs)  (struct nfs_server *, struct nfs_fh *,
			    struct nfs_fsstat *);
	int	(*fsinfo)  (struct nfs_server *, struct nfs_fh *,
			    struct nfs_fsinfo *);
	int	(*pathconf) (struct nfs_server *, struct nfs_fh *,
			     struct nfs_pathconf *);
1461
	int	(*set_capabilities)(struct nfs_server *, struct nfs_fh *);
1462
	int	(*decode_dirent)(struct xdr_stream *, struct nfs_entry *, int);
1463 1464 1465 1466 1467 1468
	int	(*pgio_rpc_prepare)(struct rpc_task *,
				    struct nfs_pgio_header *);
	void	(*read_setup)(struct nfs_pgio_header *, struct rpc_message *);
	int	(*read_done)(struct rpc_task *, struct nfs_pgio_header *);
	void	(*write_setup)(struct nfs_pgio_header *, struct rpc_message *);
	int	(*write_done)(struct rpc_task *, struct nfs_pgio_header *);
1469 1470 1471
	void	(*commit_setup) (struct nfs_commit_data *, struct rpc_message *);
	void	(*commit_rpc_prepare)(struct rpc_task *, struct nfs_commit_data *);
	int	(*commit_done) (struct rpc_task *, struct nfs_commit_data *);
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	int	(*lock)(struct file *, int, struct file_lock *);
1473
	int	(*lock_check_bounds)(const struct file_lock *);
1474
	void	(*clear_acl_cache)(struct inode *);
T
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	void	(*close_context)(struct nfs_open_context *ctx, int);
1476 1477 1478
	struct inode * (*open_context) (struct inode *dir,
				struct nfs_open_context *ctx,
				int open_flags,
1479 1480
				struct iattr *iattr,
				int *);
1481
	int (*have_delegation)(struct inode *, fmode_t);
1482
	int (*return_delegation)(struct inode *);
1483
	struct nfs_client *(*alloc_client) (const struct nfs_client_initdata *);
1484 1485
	struct nfs_client *
		(*init_client) (struct nfs_client *, const struct rpc_timeout *,
1486
				const char *);
1487
	void	(*free_client) (struct nfs_client *);
1488 1489 1490
	struct nfs_server *(*create_server)(struct nfs_mount_info *, struct nfs_subversion *);
	struct nfs_server *(*clone_server)(struct nfs_server *, struct nfs_fh *,
					   struct nfs_fattr *, rpc_authflavor_t);
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};

/*
 * 	NFS_CALL(getattr, inode, (fattr));
 * into
 *	NFS_PROTO(inode)->getattr(fattr);
 */
#define NFS_CALL(op, inode, args)	NFS_PROTO(inode)->op args

/*
 * Function vectors etc. for the NFS client
 */
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extern const struct nfs_rpc_ops	nfs_v2_clientops;
extern const struct nfs_rpc_ops	nfs_v3_clientops;
extern const struct nfs_rpc_ops	nfs_v4_clientops;
1506 1507 1508
extern const struct rpc_version nfs_version2;
extern const struct rpc_version nfs_version3;
extern const struct rpc_version nfs_version4;
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1510 1511
extern const struct rpc_version nfsacl_version3;
extern const struct rpc_program nfsacl_program;
1512

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#endif