596 lines
15 KiB
C
596 lines
15 KiB
C
/*
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* Copyright (c) 2014 Anna Schumaker <Anna.Schumaker@Netapp.com>
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*/
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#ifndef __LINUX_FS_NFS_NFS4_2XDR_H
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#define __LINUX_FS_NFS_NFS4_2XDR_H
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#include "nfs42.h"
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#define encode_fallocate_maxsz (encode_stateid_maxsz + \
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2 /* offset */ + \
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2 /* length */)
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#define NFS42_WRITE_RES_SIZE (1 /* wr_callback_id size */ +\
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XDR_QUADLEN(NFS4_STATEID_SIZE) + \
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2 /* wr_count */ + \
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1 /* wr_committed */ + \
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XDR_QUADLEN(NFS4_VERIFIER_SIZE))
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#define encode_allocate_maxsz (op_encode_hdr_maxsz + \
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encode_fallocate_maxsz)
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#define decode_allocate_maxsz (op_decode_hdr_maxsz)
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#define encode_copy_maxsz (op_encode_hdr_maxsz + \
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XDR_QUADLEN(NFS4_STATEID_SIZE) + \
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XDR_QUADLEN(NFS4_STATEID_SIZE) + \
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2 + 2 + 2 + 1 + 1 + 1)
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#define decode_copy_maxsz (op_decode_hdr_maxsz + \
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NFS42_WRITE_RES_SIZE + \
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1 /* cr_consecutive */ + \
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1 /* cr_synchronous */)
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#define encode_deallocate_maxsz (op_encode_hdr_maxsz + \
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encode_fallocate_maxsz)
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#define decode_deallocate_maxsz (op_decode_hdr_maxsz)
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#define encode_seek_maxsz (op_encode_hdr_maxsz + \
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encode_stateid_maxsz + \
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2 /* offset */ + \
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1 /* whence */)
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#define decode_seek_maxsz (op_decode_hdr_maxsz + \
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1 /* eof */ + \
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1 /* whence */ + \
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2 /* offset */ + \
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2 /* length */)
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#define encode_io_info_maxsz 4
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#define encode_layoutstats_maxsz (op_decode_hdr_maxsz + \
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2 /* offset */ + \
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2 /* length */ + \
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encode_stateid_maxsz + \
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encode_io_info_maxsz + \
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encode_io_info_maxsz + \
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1 /* opaque devaddr4 length */ + \
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XDR_QUADLEN(PNFS_LAYOUTSTATS_MAXSIZE))
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#define decode_layoutstats_maxsz (op_decode_hdr_maxsz)
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#define encode_clone_maxsz (encode_stateid_maxsz + \
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encode_stateid_maxsz + \
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2 /* src offset */ + \
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2 /* dst offset */ + \
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2 /* count */)
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#define decode_clone_maxsz (op_decode_hdr_maxsz)
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#define NFS4_enc_allocate_sz (compound_encode_hdr_maxsz + \
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encode_putfh_maxsz + \
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encode_allocate_maxsz + \
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encode_getattr_maxsz)
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#define NFS4_dec_allocate_sz (compound_decode_hdr_maxsz + \
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decode_putfh_maxsz + \
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decode_allocate_maxsz + \
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decode_getattr_maxsz)
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#define NFS4_enc_copy_sz (compound_encode_hdr_maxsz + \
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encode_putfh_maxsz + \
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encode_savefh_maxsz + \
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encode_putfh_maxsz + \
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encode_copy_maxsz)
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#define NFS4_dec_copy_sz (compound_decode_hdr_maxsz + \
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decode_putfh_maxsz + \
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decode_savefh_maxsz + \
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decode_putfh_maxsz + \
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decode_copy_maxsz)
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#define NFS4_enc_deallocate_sz (compound_encode_hdr_maxsz + \
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encode_putfh_maxsz + \
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encode_deallocate_maxsz + \
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encode_getattr_maxsz)
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#define NFS4_dec_deallocate_sz (compound_decode_hdr_maxsz + \
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decode_putfh_maxsz + \
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decode_deallocate_maxsz + \
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decode_getattr_maxsz)
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#define NFS4_enc_seek_sz (compound_encode_hdr_maxsz + \
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encode_putfh_maxsz + \
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encode_seek_maxsz)
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#define NFS4_dec_seek_sz (compound_decode_hdr_maxsz + \
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decode_putfh_maxsz + \
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decode_seek_maxsz)
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#define NFS4_enc_layoutstats_sz (compound_encode_hdr_maxsz + \
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encode_sequence_maxsz + \
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encode_putfh_maxsz + \
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PNFS_LAYOUTSTATS_MAXDEV * encode_layoutstats_maxsz)
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#define NFS4_dec_layoutstats_sz (compound_decode_hdr_maxsz + \
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decode_sequence_maxsz + \
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decode_putfh_maxsz + \
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PNFS_LAYOUTSTATS_MAXDEV * decode_layoutstats_maxsz)
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#define NFS4_enc_clone_sz (compound_encode_hdr_maxsz + \
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encode_sequence_maxsz + \
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encode_putfh_maxsz + \
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encode_savefh_maxsz + \
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encode_putfh_maxsz + \
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encode_clone_maxsz + \
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encode_getattr_maxsz)
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#define NFS4_dec_clone_sz (compound_decode_hdr_maxsz + \
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decode_sequence_maxsz + \
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decode_putfh_maxsz + \
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decode_savefh_maxsz + \
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decode_putfh_maxsz + \
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decode_clone_maxsz + \
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decode_getattr_maxsz)
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static void encode_fallocate(struct xdr_stream *xdr,
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struct nfs42_falloc_args *args)
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{
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encode_nfs4_stateid(xdr, &args->falloc_stateid);
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encode_uint64(xdr, args->falloc_offset);
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encode_uint64(xdr, args->falloc_length);
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}
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static void encode_allocate(struct xdr_stream *xdr,
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struct nfs42_falloc_args *args,
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struct compound_hdr *hdr)
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{
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encode_op_hdr(xdr, OP_ALLOCATE, decode_allocate_maxsz, hdr);
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encode_fallocate(xdr, args);
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}
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static void encode_copy(struct xdr_stream *xdr,
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struct nfs42_copy_args *args,
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struct compound_hdr *hdr)
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{
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encode_op_hdr(xdr, OP_COPY, decode_copy_maxsz, hdr);
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encode_nfs4_stateid(xdr, &args->src_stateid);
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encode_nfs4_stateid(xdr, &args->dst_stateid);
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encode_uint64(xdr, args->src_pos);
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encode_uint64(xdr, args->dst_pos);
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encode_uint64(xdr, args->count);
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encode_uint32(xdr, 1); /* consecutive = true */
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encode_uint32(xdr, 1); /* synchronous = true */
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encode_uint32(xdr, 0); /* src server list */
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}
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static void encode_deallocate(struct xdr_stream *xdr,
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struct nfs42_falloc_args *args,
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struct compound_hdr *hdr)
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{
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encode_op_hdr(xdr, OP_DEALLOCATE, decode_deallocate_maxsz, hdr);
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encode_fallocate(xdr, args);
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}
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static void encode_seek(struct xdr_stream *xdr,
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struct nfs42_seek_args *args,
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struct compound_hdr *hdr)
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{
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encode_op_hdr(xdr, OP_SEEK, decode_seek_maxsz, hdr);
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encode_nfs4_stateid(xdr, &args->sa_stateid);
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encode_uint64(xdr, args->sa_offset);
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encode_uint32(xdr, args->sa_what);
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}
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static void encode_layoutstats(struct xdr_stream *xdr,
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struct nfs42_layoutstat_args *args,
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struct nfs42_layoutstat_devinfo *devinfo,
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struct compound_hdr *hdr)
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{
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__be32 *p;
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encode_op_hdr(xdr, OP_LAYOUTSTATS, decode_layoutstats_maxsz, hdr);
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p = reserve_space(xdr, 8 + 8);
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p = xdr_encode_hyper(p, devinfo->offset);
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p = xdr_encode_hyper(p, devinfo->length);
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encode_nfs4_stateid(xdr, &args->stateid);
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p = reserve_space(xdr, 4*8 + NFS4_DEVICEID4_SIZE + 4);
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p = xdr_encode_hyper(p, devinfo->read_count);
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p = xdr_encode_hyper(p, devinfo->read_bytes);
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p = xdr_encode_hyper(p, devinfo->write_count);
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p = xdr_encode_hyper(p, devinfo->write_bytes);
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p = xdr_encode_opaque_fixed(p, devinfo->dev_id.data,
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NFS4_DEVICEID4_SIZE);
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/* Encode layoutupdate4 */
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*p++ = cpu_to_be32(devinfo->layout_type);
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if (devinfo->layoutstats_encode != NULL)
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devinfo->layoutstats_encode(xdr, args, devinfo);
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else
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encode_uint32(xdr, 0);
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}
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static void encode_clone(struct xdr_stream *xdr,
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struct nfs42_clone_args *args,
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struct compound_hdr *hdr)
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{
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__be32 *p;
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encode_op_hdr(xdr, OP_CLONE, decode_clone_maxsz, hdr);
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encode_nfs4_stateid(xdr, &args->src_stateid);
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encode_nfs4_stateid(xdr, &args->dst_stateid);
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p = reserve_space(xdr, 3*8);
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p = xdr_encode_hyper(p, args->src_offset);
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p = xdr_encode_hyper(p, args->dst_offset);
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xdr_encode_hyper(p, args->count);
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}
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/*
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* Encode ALLOCATE request
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*/
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static void nfs4_xdr_enc_allocate(struct rpc_rqst *req,
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struct xdr_stream *xdr,
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struct nfs42_falloc_args *args)
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{
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struct compound_hdr hdr = {
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.minorversion = nfs4_xdr_minorversion(&args->seq_args),
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};
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encode_compound_hdr(xdr, req, &hdr);
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encode_sequence(xdr, &args->seq_args, &hdr);
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encode_putfh(xdr, args->falloc_fh, &hdr);
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encode_allocate(xdr, args, &hdr);
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encode_getfattr(xdr, args->falloc_bitmask, &hdr);
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encode_nops(&hdr);
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}
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/*
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* Encode COPY request
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*/
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static void nfs4_xdr_enc_copy(struct rpc_rqst *req,
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struct xdr_stream *xdr,
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struct nfs42_copy_args *args)
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{
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struct compound_hdr hdr = {
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.minorversion = nfs4_xdr_minorversion(&args->seq_args),
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};
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encode_compound_hdr(xdr, req, &hdr);
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encode_sequence(xdr, &args->seq_args, &hdr);
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encode_putfh(xdr, args->src_fh, &hdr);
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encode_savefh(xdr, &hdr);
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encode_putfh(xdr, args->dst_fh, &hdr);
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encode_copy(xdr, args, &hdr);
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encode_nops(&hdr);
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}
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/*
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* Encode DEALLOCATE request
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*/
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static void nfs4_xdr_enc_deallocate(struct rpc_rqst *req,
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struct xdr_stream *xdr,
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struct nfs42_falloc_args *args)
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{
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struct compound_hdr hdr = {
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.minorversion = nfs4_xdr_minorversion(&args->seq_args),
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};
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encode_compound_hdr(xdr, req, &hdr);
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encode_sequence(xdr, &args->seq_args, &hdr);
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encode_putfh(xdr, args->falloc_fh, &hdr);
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encode_deallocate(xdr, args, &hdr);
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encode_getfattr(xdr, args->falloc_bitmask, &hdr);
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encode_nops(&hdr);
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}
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/*
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* Encode SEEK request
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*/
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static void nfs4_xdr_enc_seek(struct rpc_rqst *req,
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struct xdr_stream *xdr,
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struct nfs42_seek_args *args)
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{
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struct compound_hdr hdr = {
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.minorversion = nfs4_xdr_minorversion(&args->seq_args),
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};
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encode_compound_hdr(xdr, req, &hdr);
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encode_sequence(xdr, &args->seq_args, &hdr);
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encode_putfh(xdr, args->sa_fh, &hdr);
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encode_seek(xdr, args, &hdr);
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encode_nops(&hdr);
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}
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/*
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* Encode LAYOUTSTATS request
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*/
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static void nfs4_xdr_enc_layoutstats(struct rpc_rqst *req,
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struct xdr_stream *xdr,
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struct nfs42_layoutstat_args *args)
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{
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int i;
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struct compound_hdr hdr = {
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.minorversion = nfs4_xdr_minorversion(&args->seq_args),
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};
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encode_compound_hdr(xdr, req, &hdr);
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encode_sequence(xdr, &args->seq_args, &hdr);
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encode_putfh(xdr, args->fh, &hdr);
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WARN_ON(args->num_dev > PNFS_LAYOUTSTATS_MAXDEV);
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for (i = 0; i < args->num_dev; i++)
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encode_layoutstats(xdr, args, &args->devinfo[i], &hdr);
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encode_nops(&hdr);
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}
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/*
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* Encode CLONE request
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*/
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static void nfs4_xdr_enc_clone(struct rpc_rqst *req,
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struct xdr_stream *xdr,
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struct nfs42_clone_args *args)
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{
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struct compound_hdr hdr = {
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.minorversion = nfs4_xdr_minorversion(&args->seq_args),
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};
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encode_compound_hdr(xdr, req, &hdr);
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encode_sequence(xdr, &args->seq_args, &hdr);
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encode_putfh(xdr, args->src_fh, &hdr);
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encode_savefh(xdr, &hdr);
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encode_putfh(xdr, args->dst_fh, &hdr);
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encode_clone(xdr, args, &hdr);
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encode_getfattr(xdr, args->dst_bitmask, &hdr);
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encode_nops(&hdr);
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}
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static int decode_allocate(struct xdr_stream *xdr, struct nfs42_falloc_res *res)
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{
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return decode_op_hdr(xdr, OP_ALLOCATE);
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}
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static int decode_write_response(struct xdr_stream *xdr,
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struct nfs42_write_res *res)
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{
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__be32 *p;
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int stateids;
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p = xdr_inline_decode(xdr, 4 + 8 + 4);
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if (unlikely(!p))
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goto out_overflow;
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stateids = be32_to_cpup(p++);
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p = xdr_decode_hyper(p, &res->count);
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res->verifier.committed = be32_to_cpup(p);
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return decode_verifier(xdr, &res->verifier.verifier);
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out_overflow:
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print_overflow_msg(__func__, xdr);
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return -EIO;
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}
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static int decode_copy_requirements(struct xdr_stream *xdr,
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struct nfs42_copy_res *res) {
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__be32 *p;
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p = xdr_inline_decode(xdr, 4 + 4);
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if (unlikely(!p))
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goto out_overflow;
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res->consecutive = be32_to_cpup(p++);
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res->synchronous = be32_to_cpup(p++);
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return 0;
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out_overflow:
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print_overflow_msg(__func__, xdr);
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return -EIO;
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}
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static int decode_copy(struct xdr_stream *xdr, struct nfs42_copy_res *res)
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{
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int status;
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status = decode_op_hdr(xdr, OP_COPY);
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if (status == NFS4ERR_OFFLOAD_NO_REQS) {
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status = decode_copy_requirements(xdr, res);
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if (status)
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return status;
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return NFS4ERR_OFFLOAD_NO_REQS;
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} else if (status)
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return status;
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status = decode_write_response(xdr, &res->write_res);
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if (status)
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return status;
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return decode_copy_requirements(xdr, res);
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}
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static int decode_deallocate(struct xdr_stream *xdr, struct nfs42_falloc_res *res)
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{
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return decode_op_hdr(xdr, OP_DEALLOCATE);
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}
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static int decode_seek(struct xdr_stream *xdr, struct nfs42_seek_res *res)
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{
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int status;
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__be32 *p;
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status = decode_op_hdr(xdr, OP_SEEK);
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if (status)
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return status;
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p = xdr_inline_decode(xdr, 4 + 8);
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if (unlikely(!p))
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goto out_overflow;
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res->sr_eof = be32_to_cpup(p++);
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p = xdr_decode_hyper(p, &res->sr_offset);
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return 0;
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out_overflow:
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print_overflow_msg(__func__, xdr);
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return -EIO;
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}
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static int decode_layoutstats(struct xdr_stream *xdr)
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{
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return decode_op_hdr(xdr, OP_LAYOUTSTATS);
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}
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static int decode_clone(struct xdr_stream *xdr)
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{
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return decode_op_hdr(xdr, OP_CLONE);
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}
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/*
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* Decode ALLOCATE request
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*/
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static int nfs4_xdr_dec_allocate(struct rpc_rqst *rqstp,
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struct xdr_stream *xdr,
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struct nfs42_falloc_res *res)
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{
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struct compound_hdr hdr;
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int status;
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status = decode_compound_hdr(xdr, &hdr);
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if (status)
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goto out;
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status = decode_sequence(xdr, &res->seq_res, rqstp);
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if (status)
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goto out;
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status = decode_putfh(xdr);
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if (status)
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goto out;
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status = decode_allocate(xdr, res);
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if (status)
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goto out;
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decode_getfattr(xdr, res->falloc_fattr, res->falloc_server);
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out:
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return status;
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}
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/*
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* Decode COPY response
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*/
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static int nfs4_xdr_dec_copy(struct rpc_rqst *rqstp,
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struct xdr_stream *xdr,
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struct nfs42_copy_res *res)
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{
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struct compound_hdr hdr;
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int status;
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status = decode_compound_hdr(xdr, &hdr);
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if (status)
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goto out;
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status = decode_sequence(xdr, &res->seq_res, rqstp);
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if (status)
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goto out;
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status = decode_putfh(xdr);
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if (status)
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goto out;
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status = decode_savefh(xdr);
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if (status)
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goto out;
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status = decode_putfh(xdr);
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if (status)
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goto out;
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status = decode_copy(xdr, res);
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|
out:
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Decode DEALLOCATE request
|
|
*/
|
|
static int nfs4_xdr_dec_deallocate(struct rpc_rqst *rqstp,
|
|
struct xdr_stream *xdr,
|
|
struct nfs42_falloc_res *res)
|
|
{
|
|
struct compound_hdr hdr;
|
|
int status;
|
|
|
|
status = decode_compound_hdr(xdr, &hdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_sequence(xdr, &res->seq_res, rqstp);
|
|
if (status)
|
|
goto out;
|
|
status = decode_putfh(xdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_deallocate(xdr, res);
|
|
if (status)
|
|
goto out;
|
|
decode_getfattr(xdr, res->falloc_fattr, res->falloc_server);
|
|
out:
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Decode SEEK request
|
|
*/
|
|
static int nfs4_xdr_dec_seek(struct rpc_rqst *rqstp,
|
|
struct xdr_stream *xdr,
|
|
struct nfs42_seek_res *res)
|
|
{
|
|
struct compound_hdr hdr;
|
|
int status;
|
|
|
|
status = decode_compound_hdr(xdr, &hdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_sequence(xdr, &res->seq_res, rqstp);
|
|
if (status)
|
|
goto out;
|
|
status = decode_putfh(xdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_seek(xdr, res);
|
|
out:
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Decode LAYOUTSTATS request
|
|
*/
|
|
static int nfs4_xdr_dec_layoutstats(struct rpc_rqst *rqstp,
|
|
struct xdr_stream *xdr,
|
|
struct nfs42_layoutstat_res *res)
|
|
{
|
|
struct compound_hdr hdr;
|
|
int status, i;
|
|
|
|
status = decode_compound_hdr(xdr, &hdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_sequence(xdr, &res->seq_res, rqstp);
|
|
if (status)
|
|
goto out;
|
|
status = decode_putfh(xdr);
|
|
if (status)
|
|
goto out;
|
|
WARN_ON(res->num_dev > PNFS_LAYOUTSTATS_MAXDEV);
|
|
for (i = 0; i < res->num_dev; i++) {
|
|
status = decode_layoutstats(xdr);
|
|
if (status)
|
|
goto out;
|
|
}
|
|
out:
|
|
res->rpc_status = status;
|
|
return status;
|
|
}
|
|
|
|
/*
|
|
* Decode CLONE request
|
|
*/
|
|
static int nfs4_xdr_dec_clone(struct rpc_rqst *rqstp,
|
|
struct xdr_stream *xdr,
|
|
struct nfs42_clone_res *res)
|
|
{
|
|
struct compound_hdr hdr;
|
|
int status;
|
|
|
|
status = decode_compound_hdr(xdr, &hdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_sequence(xdr, &res->seq_res, rqstp);
|
|
if (status)
|
|
goto out;
|
|
status = decode_putfh(xdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_savefh(xdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_putfh(xdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_clone(xdr);
|
|
if (status)
|
|
goto out;
|
|
status = decode_getfattr(xdr, res->dst_fattr, res->server);
|
|
|
|
out:
|
|
res->rpc_status = status;
|
|
return status;
|
|
}
|
|
|
|
#endif /* __LINUX_FS_NFS_NFS4_2XDR_H */
|