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1630 lines
41 KiB
1630 lines
41 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* Copyright (c) 2014 Anna Schumaker <[email protected]> |
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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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|
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#include "nfs42.h" |
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|
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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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1 + /* One cnr_source_server */\ |
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1 + /* nl4_type */ \ |
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1 + XDR_QUADLEN(NFS4_OPAQUE_LIMIT)) |
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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_offload_cancel_maxsz (op_encode_hdr_maxsz + \ |
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XDR_QUADLEN(NFS4_STATEID_SIZE)) |
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#define decode_offload_cancel_maxsz (op_decode_hdr_maxsz) |
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#define encode_copy_notify_maxsz (op_encode_hdr_maxsz + \ |
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XDR_QUADLEN(NFS4_STATEID_SIZE) + \ |
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1 + /* nl4_type */ \ |
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1 + XDR_QUADLEN(NFS4_OPAQUE_LIMIT)) |
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#define decode_copy_notify_maxsz (op_decode_hdr_maxsz + \ |
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3 + /* cnr_lease_time */\ |
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XDR_QUADLEN(NFS4_STATEID_SIZE) + \ |
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1 + /* Support 1 cnr_source_server */\ |
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1 + /* nl4_type */ \ |
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1 + XDR_QUADLEN(NFS4_OPAQUE_LIMIT)) |
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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_read_plus_maxsz (op_encode_hdr_maxsz + \ |
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encode_stateid_maxsz + 3) |
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#define NFS42_READ_PLUS_SEGMENT_SIZE (1 /* data_content4 */ + \ |
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2 /* data_info4.di_offset */ + \ |
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2 /* data_info4.di_length */) |
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#define decode_read_plus_maxsz (op_decode_hdr_maxsz + \ |
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1 /* rpr_eof */ + \ |
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1 /* rpr_contents count */ + \ |
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2 * NFS42_READ_PLUS_SEGMENT_SIZE) |
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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_device_error_maxsz (XDR_QUADLEN(NFS4_DEVICEID4_SIZE) + \ |
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1 /* status */ + 1 /* opnum */) |
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#define encode_layouterror_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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1 /* Array size */ + \ |
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encode_device_error_maxsz) |
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#define decode_layouterror_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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|
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#define NFS4_enc_allocate_sz (compound_encode_hdr_maxsz + \ |
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encode_sequence_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_sequence_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_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_copy_maxsz + \ |
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encode_commit_maxsz) |
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#define NFS4_dec_copy_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_copy_maxsz + \ |
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decode_commit_maxsz) |
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#define NFS4_enc_offload_cancel_sz (compound_encode_hdr_maxsz + \ |
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encode_sequence_maxsz + \ |
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encode_putfh_maxsz + \ |
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encode_offload_cancel_maxsz) |
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#define NFS4_dec_offload_cancel_sz (compound_decode_hdr_maxsz + \ |
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decode_sequence_maxsz + \ |
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decode_putfh_maxsz + \ |
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decode_offload_cancel_maxsz) |
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#define NFS4_enc_copy_notify_sz (compound_encode_hdr_maxsz + \ |
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encode_putfh_maxsz + \ |
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encode_copy_notify_maxsz) |
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#define NFS4_dec_copy_notify_sz (compound_decode_hdr_maxsz + \ |
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decode_putfh_maxsz + \ |
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decode_copy_notify_maxsz) |
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#define NFS4_enc_deallocate_sz (compound_encode_hdr_maxsz + \ |
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encode_sequence_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_sequence_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_read_plus_sz (compound_encode_hdr_maxsz + \ |
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encode_sequence_maxsz + \ |
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encode_putfh_maxsz + \ |
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encode_read_plus_maxsz) |
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#define NFS4_dec_read_plus_sz (compound_decode_hdr_maxsz + \ |
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decode_sequence_maxsz + \ |
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decode_putfh_maxsz + \ |
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decode_read_plus_maxsz) |
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#define NFS4_enc_seek_sz (compound_encode_hdr_maxsz + \ |
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encode_sequence_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_sequence_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_layouterror_sz (compound_encode_hdr_maxsz + \ |
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encode_sequence_maxsz + \ |
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encode_putfh_maxsz + \ |
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NFS42_LAYOUTERROR_MAX * \ |
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encode_layouterror_maxsz) |
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#define NFS4_dec_layouterror_sz (compound_decode_hdr_maxsz + \ |
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decode_sequence_maxsz + \ |
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decode_putfh_maxsz + \ |
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NFS42_LAYOUTERROR_MAX * \ |
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decode_layouterror_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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/* Not limited by NFS itself, limited by the generic xattr code */ |
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#define nfs4_xattr_name_maxsz XDR_QUADLEN(XATTR_NAME_MAX) |
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|
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#define encode_getxattr_maxsz (op_encode_hdr_maxsz + 1 + \ |
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nfs4_xattr_name_maxsz) |
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#define decode_getxattr_maxsz (op_decode_hdr_maxsz + 1 + pagepad_maxsz) |
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#define encode_setxattr_maxsz (op_encode_hdr_maxsz + \ |
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1 + nfs4_xattr_name_maxsz + 1) |
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#define decode_setxattr_maxsz (op_decode_hdr_maxsz + decode_change_info_maxsz) |
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#define encode_listxattrs_maxsz (op_encode_hdr_maxsz + 2 + 1) |
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#define decode_listxattrs_maxsz (op_decode_hdr_maxsz + 2 + 1 + 1 + 1) |
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#define encode_removexattr_maxsz (op_encode_hdr_maxsz + 1 + \ |
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nfs4_xattr_name_maxsz) |
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#define decode_removexattr_maxsz (op_decode_hdr_maxsz + \ |
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decode_change_info_maxsz) |
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#define NFS4_enc_getxattr_sz (compound_encode_hdr_maxsz + \ |
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encode_sequence_maxsz + \ |
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encode_putfh_maxsz + \ |
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encode_getxattr_maxsz) |
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#define NFS4_dec_getxattr_sz (compound_decode_hdr_maxsz + \ |
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decode_sequence_maxsz + \ |
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decode_putfh_maxsz + \ |
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decode_getxattr_maxsz) |
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#define NFS4_enc_setxattr_sz (compound_encode_hdr_maxsz + \ |
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encode_sequence_maxsz + \ |
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encode_putfh_maxsz + \ |
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encode_setxattr_maxsz) |
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#define NFS4_dec_setxattr_sz (compound_decode_hdr_maxsz + \ |
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decode_sequence_maxsz + \ |
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decode_putfh_maxsz + \ |
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decode_setxattr_maxsz) |
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#define NFS4_enc_listxattrs_sz (compound_encode_hdr_maxsz + \ |
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encode_sequence_maxsz + \ |
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encode_putfh_maxsz + \ |
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encode_listxattrs_maxsz) |
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#define NFS4_dec_listxattrs_sz (compound_decode_hdr_maxsz + \ |
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decode_sequence_maxsz + \ |
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decode_putfh_maxsz + \ |
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decode_listxattrs_maxsz) |
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#define NFS4_enc_removexattr_sz (compound_encode_hdr_maxsz + \ |
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encode_sequence_maxsz + \ |
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encode_putfh_maxsz + \ |
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encode_removexattr_maxsz) |
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#define NFS4_dec_removexattr_sz (compound_decode_hdr_maxsz + \ |
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decode_sequence_maxsz + \ |
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decode_putfh_maxsz + \ |
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decode_removexattr_maxsz) |
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/* |
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* These values specify the maximum amount of data that is not |
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* associated with the extended attribute name or extended |
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* attribute list in the SETXATTR, GETXATTR and LISTXATTR |
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* respectively. |
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*/ |
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const u32 nfs42_maxsetxattr_overhead = ((RPC_MAX_HEADER_WITH_AUTH + |
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compound_encode_hdr_maxsz + |
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encode_sequence_maxsz + |
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encode_putfh_maxsz + 1 + |
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nfs4_xattr_name_maxsz) |
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* XDR_UNIT); |
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const u32 nfs42_maxgetxattr_overhead = ((RPC_MAX_HEADER_WITH_AUTH + |
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compound_decode_hdr_maxsz + |
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decode_sequence_maxsz + |
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decode_putfh_maxsz + 1) * XDR_UNIT); |
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const u32 nfs42_maxlistxattrs_overhead = ((RPC_MAX_HEADER_WITH_AUTH + |
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compound_decode_hdr_maxsz + |
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decode_sequence_maxsz + |
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decode_putfh_maxsz + 3) * XDR_UNIT); |
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static void encode_fallocate(struct xdr_stream *xdr, |
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const 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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const 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_nl4_server(struct xdr_stream *xdr, |
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const struct nl4_server *ns) |
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{ |
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encode_uint32(xdr, ns->nl4_type); |
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switch (ns->nl4_type) { |
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case NL4_NAME: |
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case NL4_URL: |
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encode_string(xdr, ns->u.nl4_str_sz, ns->u.nl4_str); |
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break; |
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case NL4_NETADDR: |
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encode_string(xdr, ns->u.nl4_addr.netid_len, |
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ns->u.nl4_addr.netid); |
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encode_string(xdr, ns->u.nl4_addr.addr_len, |
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ns->u.nl4_addr.addr); |
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break; |
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default: |
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WARN_ON_ONCE(1); |
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} |
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} |
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static void encode_copy(struct xdr_stream *xdr, |
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const 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, args->sync); |
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if (args->cp_src == NULL) { /* intra-ssc */ |
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encode_uint32(xdr, 0); /* no src server list */ |
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return; |
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} |
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encode_uint32(xdr, 1); /* supporting 1 server */ |
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encode_nl4_server(xdr, args->cp_src); |
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} |
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static void encode_offload_cancel(struct xdr_stream *xdr, |
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const struct nfs42_offload_status_args *args, |
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struct compound_hdr *hdr) |
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{ |
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encode_op_hdr(xdr, OP_OFFLOAD_CANCEL, decode_offload_cancel_maxsz, hdr); |
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encode_nfs4_stateid(xdr, &args->osa_stateid); |
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} |
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static void encode_copy_notify(struct xdr_stream *xdr, |
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const struct nfs42_copy_notify_args *args, |
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struct compound_hdr *hdr) |
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{ |
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encode_op_hdr(xdr, OP_COPY_NOTIFY, decode_copy_notify_maxsz, hdr); |
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encode_nfs4_stateid(xdr, &args->cna_src_stateid); |
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encode_nl4_server(xdr, &args->cna_dst); |
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} |
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static void encode_deallocate(struct xdr_stream *xdr, |
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const 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_read_plus(struct xdr_stream *xdr, |
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const struct nfs_pgio_args *args, |
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struct compound_hdr *hdr) |
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{ |
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encode_op_hdr(xdr, OP_READ_PLUS, decode_read_plus_maxsz, hdr); |
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encode_nfs4_stateid(xdr, &args->stateid); |
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encode_uint64(xdr, args->offset); |
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encode_uint32(xdr, args->count); |
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} |
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|
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static void encode_seek(struct xdr_stream *xdr, |
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const 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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|
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static void encode_layoutstats(struct xdr_stream *xdr, |
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const 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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|
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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->ld_private.ops) |
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devinfo->ld_private.ops->encode(xdr, args, |
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&devinfo->ld_private); |
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else |
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encode_uint32(xdr, 0); |
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} |
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|
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static void encode_clone(struct xdr_stream *xdr, |
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const 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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|
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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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static void encode_device_error(struct xdr_stream *xdr, |
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const struct nfs42_device_error *error) |
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{ |
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__be32 *p; |
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|
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p = reserve_space(xdr, NFS4_DEVICEID4_SIZE + 2*4); |
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p = xdr_encode_opaque_fixed(p, error->dev_id.data, |
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NFS4_DEVICEID4_SIZE); |
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*p++ = cpu_to_be32(error->status); |
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*p = cpu_to_be32(error->opnum); |
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} |
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|
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static void encode_layouterror(struct xdr_stream *xdr, |
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const struct nfs42_layout_error *args, |
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struct compound_hdr *hdr) |
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{ |
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__be32 *p; |
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|
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encode_op_hdr(xdr, OP_LAYOUTERROR, decode_layouterror_maxsz, hdr); |
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p = reserve_space(xdr, 8 + 8); |
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p = xdr_encode_hyper(p, args->offset); |
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p = xdr_encode_hyper(p, args->length); |
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encode_nfs4_stateid(xdr, &args->stateid); |
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p = reserve_space(xdr, 4); |
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*p = cpu_to_be32(1); |
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encode_device_error(xdr, &args->errors[0]); |
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} |
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|
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static void encode_setxattr(struct xdr_stream *xdr, |
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const struct nfs42_setxattrargs *arg, |
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struct compound_hdr *hdr) |
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{ |
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__be32 *p; |
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|
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BUILD_BUG_ON(XATTR_CREATE != SETXATTR4_CREATE); |
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BUILD_BUG_ON(XATTR_REPLACE != SETXATTR4_REPLACE); |
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|
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encode_op_hdr(xdr, OP_SETXATTR, decode_setxattr_maxsz, hdr); |
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p = reserve_space(xdr, 4); |
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*p = cpu_to_be32(arg->xattr_flags); |
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encode_string(xdr, strlen(arg->xattr_name), arg->xattr_name); |
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p = reserve_space(xdr, 4); |
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*p = cpu_to_be32(arg->xattr_len); |
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if (arg->xattr_len) |
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xdr_write_pages(xdr, arg->xattr_pages, 0, arg->xattr_len); |
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} |
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|
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static int decode_setxattr(struct xdr_stream *xdr, |
|
struct nfs4_change_info *cinfo) |
|
{ |
|
int status; |
|
|
|
status = decode_op_hdr(xdr, OP_SETXATTR); |
|
if (status) |
|
goto out; |
|
status = decode_change_info(xdr, cinfo); |
|
out: |
|
return status; |
|
} |
|
|
|
|
|
static void encode_getxattr(struct xdr_stream *xdr, const char *name, |
|
struct compound_hdr *hdr) |
|
{ |
|
encode_op_hdr(xdr, OP_GETXATTR, decode_getxattr_maxsz, hdr); |
|
encode_string(xdr, strlen(name), name); |
|
} |
|
|
|
static int decode_getxattr(struct xdr_stream *xdr, |
|
struct nfs42_getxattrres *res, |
|
struct rpc_rqst *req) |
|
{ |
|
int status; |
|
__be32 *p; |
|
u32 len, rdlen; |
|
|
|
status = decode_op_hdr(xdr, OP_GETXATTR); |
|
if (status) |
|
return status; |
|
|
|
p = xdr_inline_decode(xdr, 4); |
|
if (unlikely(!p)) |
|
return -EIO; |
|
|
|
len = be32_to_cpup(p); |
|
|
|
/* |
|
* Only check against the page length here. The actual |
|
* requested length may be smaller, but that is only |
|
* checked against after possibly caching a valid reply. |
|
*/ |
|
if (len > req->rq_rcv_buf.page_len) |
|
return -ERANGE; |
|
|
|
res->xattr_len = len; |
|
|
|
if (len > 0) { |
|
rdlen = xdr_read_pages(xdr, len); |
|
if (rdlen < len) |
|
return -EIO; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static void encode_removexattr(struct xdr_stream *xdr, const char *name, |
|
struct compound_hdr *hdr) |
|
{ |
|
encode_op_hdr(xdr, OP_REMOVEXATTR, decode_removexattr_maxsz, hdr); |
|
encode_string(xdr, strlen(name), name); |
|
} |
|
|
|
|
|
static int decode_removexattr(struct xdr_stream *xdr, |
|
struct nfs4_change_info *cinfo) |
|
{ |
|
int status; |
|
|
|
status = decode_op_hdr(xdr, OP_REMOVEXATTR); |
|
if (status) |
|
goto out; |
|
|
|
status = decode_change_info(xdr, cinfo); |
|
out: |
|
return status; |
|
} |
|
|
|
static void encode_listxattrs(struct xdr_stream *xdr, |
|
const struct nfs42_listxattrsargs *arg, |
|
struct compound_hdr *hdr) |
|
{ |
|
__be32 *p; |
|
|
|
encode_op_hdr(xdr, OP_LISTXATTRS, decode_listxattrs_maxsz, hdr); |
|
|
|
p = reserve_space(xdr, 12); |
|
if (unlikely(!p)) |
|
return; |
|
|
|
p = xdr_encode_hyper(p, arg->cookie); |
|
/* |
|
* RFC 8276 says to specify the full max length of the LISTXATTRS |
|
* XDR reply. Count is set to the XDR length of the names array |
|
* plus the EOF marker. So, add the cookie and the names count. |
|
*/ |
|
*p = cpu_to_be32(arg->count + 8 + 4); |
|
} |
|
|
|
static int decode_listxattrs(struct xdr_stream *xdr, |
|
struct nfs42_listxattrsres *res) |
|
{ |
|
int status; |
|
__be32 *p; |
|
u32 count, len, ulen; |
|
size_t left, copied; |
|
char *buf; |
|
|
|
status = decode_op_hdr(xdr, OP_LISTXATTRS); |
|
if (status) { |
|
/* |
|
* Special case: for LISTXATTRS, NFS4ERR_TOOSMALL |
|
* should be translated to ERANGE. |
|
*/ |
|
if (status == -ETOOSMALL) |
|
status = -ERANGE; |
|
goto out; |
|
} |
|
|
|
p = xdr_inline_decode(xdr, 8); |
|
if (unlikely(!p)) |
|
return -EIO; |
|
|
|
xdr_decode_hyper(p, &res->cookie); |
|
|
|
p = xdr_inline_decode(xdr, 4); |
|
if (unlikely(!p)) |
|
return -EIO; |
|
|
|
left = res->xattr_len; |
|
buf = res->xattr_buf; |
|
|
|
count = be32_to_cpup(p); |
|
copied = 0; |
|
|
|
/* |
|
* We have asked for enough room to encode the maximum number |
|
* of possible attribute names, so everything should fit. |
|
* |
|
* But, don't rely on that assumption. Just decode entries |
|
* until they don't fit anymore, just in case the server did |
|
* something odd. |
|
*/ |
|
while (count--) { |
|
p = xdr_inline_decode(xdr, 4); |
|
if (unlikely(!p)) |
|
return -EIO; |
|
|
|
len = be32_to_cpup(p); |
|
if (len > (XATTR_NAME_MAX - XATTR_USER_PREFIX_LEN)) { |
|
status = -ERANGE; |
|
goto out; |
|
} |
|
|
|
p = xdr_inline_decode(xdr, len); |
|
if (unlikely(!p)) |
|
return -EIO; |
|
|
|
ulen = len + XATTR_USER_PREFIX_LEN + 1; |
|
if (buf) { |
|
if (ulen > left) { |
|
status = -ERANGE; |
|
goto out; |
|
} |
|
|
|
memcpy(buf, XATTR_USER_PREFIX, XATTR_USER_PREFIX_LEN); |
|
memcpy(buf + XATTR_USER_PREFIX_LEN, p, len); |
|
|
|
buf[ulen - 1] = 0; |
|
buf += ulen; |
|
left -= ulen; |
|
} |
|
copied += ulen; |
|
} |
|
|
|
p = xdr_inline_decode(xdr, 4); |
|
if (unlikely(!p)) |
|
return -EIO; |
|
|
|
res->eof = be32_to_cpup(p); |
|
res->copied = copied; |
|
|
|
out: |
|
if (status == -ERANGE && res->xattr_len == XATTR_LIST_MAX) |
|
status = -E2BIG; |
|
|
|
return status; |
|
} |
|
|
|
/* |
|
* Encode ALLOCATE request |
|
*/ |
|
static void nfs4_xdr_enc_allocate(struct rpc_rqst *req, |
|
struct xdr_stream *xdr, |
|
const void *data) |
|
{ |
|
const struct nfs42_falloc_args *args = data; |
|
struct compound_hdr hdr = { |
|
.minorversion = nfs4_xdr_minorversion(&args->seq_args), |
|
}; |
|
|
|
encode_compound_hdr(xdr, req, &hdr); |
|
encode_sequence(xdr, &args->seq_args, &hdr); |
|
encode_putfh(xdr, args->falloc_fh, &hdr); |
|
encode_allocate(xdr, args, &hdr); |
|
encode_getfattr(xdr, args->falloc_bitmask, &hdr); |
|
encode_nops(&hdr); |
|
} |
|
|
|
static void encode_copy_commit(struct xdr_stream *xdr, |
|
const struct nfs42_copy_args *args, |
|
struct compound_hdr *hdr) |
|
{ |
|
__be32 *p; |
|
|
|
encode_op_hdr(xdr, OP_COMMIT, decode_commit_maxsz, hdr); |
|
p = reserve_space(xdr, 12); |
|
p = xdr_encode_hyper(p, args->dst_pos); |
|
*p = cpu_to_be32(args->count); |
|
} |
|
|
|
/* |
|
* Encode COPY request |
|
*/ |
|
static void nfs4_xdr_enc_copy(struct rpc_rqst *req, |
|
struct xdr_stream *xdr, |
|
const void *data) |
|
{ |
|
const struct nfs42_copy_args *args = data; |
|
struct compound_hdr hdr = { |
|
.minorversion = nfs4_xdr_minorversion(&args->seq_args), |
|
}; |
|
|
|
encode_compound_hdr(xdr, req, &hdr); |
|
encode_sequence(xdr, &args->seq_args, &hdr); |
|
encode_putfh(xdr, args->src_fh, &hdr); |
|
encode_savefh(xdr, &hdr); |
|
encode_putfh(xdr, args->dst_fh, &hdr); |
|
encode_copy(xdr, args, &hdr); |
|
if (args->sync) |
|
encode_copy_commit(xdr, args, &hdr); |
|
encode_nops(&hdr); |
|
} |
|
|
|
/* |
|
* Encode OFFLOAD_CANEL request |
|
*/ |
|
static void nfs4_xdr_enc_offload_cancel(struct rpc_rqst *req, |
|
struct xdr_stream *xdr, |
|
const void *data) |
|
{ |
|
const struct nfs42_offload_status_args *args = data; |
|
struct compound_hdr hdr = { |
|
.minorversion = nfs4_xdr_minorversion(&args->osa_seq_args), |
|
}; |
|
|
|
encode_compound_hdr(xdr, req, &hdr); |
|
encode_sequence(xdr, &args->osa_seq_args, &hdr); |
|
encode_putfh(xdr, args->osa_src_fh, &hdr); |
|
encode_offload_cancel(xdr, args, &hdr); |
|
encode_nops(&hdr); |
|
} |
|
|
|
/* |
|
* Encode COPY_NOTIFY request |
|
*/ |
|
static void nfs4_xdr_enc_copy_notify(struct rpc_rqst *req, |
|
struct xdr_stream *xdr, |
|
const void *data) |
|
{ |
|
const struct nfs42_copy_notify_args *args = data; |
|
struct compound_hdr hdr = { |
|
.minorversion = nfs4_xdr_minorversion(&args->cna_seq_args), |
|
}; |
|
|
|
encode_compound_hdr(xdr, req, &hdr); |
|
encode_sequence(xdr, &args->cna_seq_args, &hdr); |
|
encode_putfh(xdr, args->cna_src_fh, &hdr); |
|
encode_copy_notify(xdr, args, &hdr); |
|
encode_nops(&hdr); |
|
} |
|
|
|
/* |
|
* Encode DEALLOCATE request |
|
*/ |
|
static void nfs4_xdr_enc_deallocate(struct rpc_rqst *req, |
|
struct xdr_stream *xdr, |
|
const void *data) |
|
{ |
|
const struct nfs42_falloc_args *args = data; |
|
struct compound_hdr hdr = { |
|
.minorversion = nfs4_xdr_minorversion(&args->seq_args), |
|
}; |
|
|
|
encode_compound_hdr(xdr, req, &hdr); |
|
encode_sequence(xdr, &args->seq_args, &hdr); |
|
encode_putfh(xdr, args->falloc_fh, &hdr); |
|
encode_deallocate(xdr, args, &hdr); |
|
encode_getfattr(xdr, args->falloc_bitmask, &hdr); |
|
encode_nops(&hdr); |
|
} |
|
|
|
/* |
|
* Encode READ_PLUS request |
|
*/ |
|
static void nfs4_xdr_enc_read_plus(struct rpc_rqst *req, |
|
struct xdr_stream *xdr, |
|
const void *data) |
|
{ |
|
const struct nfs_pgio_args *args = data; |
|
struct compound_hdr hdr = { |
|
.minorversion = nfs4_xdr_minorversion(&args->seq_args), |
|
}; |
|
|
|
encode_compound_hdr(xdr, req, &hdr); |
|
encode_sequence(xdr, &args->seq_args, &hdr); |
|
encode_putfh(xdr, args->fh, &hdr); |
|
encode_read_plus(xdr, args, &hdr); |
|
|
|
rpc_prepare_reply_pages(req, args->pages, args->pgbase, |
|
args->count, hdr.replen); |
|
encode_nops(&hdr); |
|
} |
|
|
|
/* |
|
* Encode SEEK request |
|
*/ |
|
static void nfs4_xdr_enc_seek(struct rpc_rqst *req, |
|
struct xdr_stream *xdr, |
|
const void *data) |
|
{ |
|
const struct nfs42_seek_args *args = data; |
|
struct compound_hdr hdr = { |
|
.minorversion = nfs4_xdr_minorversion(&args->seq_args), |
|
}; |
|
|
|
encode_compound_hdr(xdr, req, &hdr); |
|
encode_sequence(xdr, &args->seq_args, &hdr); |
|
encode_putfh(xdr, args->sa_fh, &hdr); |
|
encode_seek(xdr, args, &hdr); |
|
encode_nops(&hdr); |
|
} |
|
|
|
/* |
|
* Encode LAYOUTSTATS request |
|
*/ |
|
static void nfs4_xdr_enc_layoutstats(struct rpc_rqst *req, |
|
struct xdr_stream *xdr, |
|
const void *data) |
|
{ |
|
const struct nfs42_layoutstat_args *args = data; |
|
int i; |
|
|
|
struct compound_hdr hdr = { |
|
.minorversion = nfs4_xdr_minorversion(&args->seq_args), |
|
}; |
|
|
|
encode_compound_hdr(xdr, req, &hdr); |
|
encode_sequence(xdr, &args->seq_args, &hdr); |
|
encode_putfh(xdr, args->fh, &hdr); |
|
WARN_ON(args->num_dev > PNFS_LAYOUTSTATS_MAXDEV); |
|
for (i = 0; i < args->num_dev; i++) |
|
encode_layoutstats(xdr, args, &args->devinfo[i], &hdr); |
|
encode_nops(&hdr); |
|
} |
|
|
|
/* |
|
* Encode CLONE request |
|
*/ |
|
static void nfs4_xdr_enc_clone(struct rpc_rqst *req, |
|
struct xdr_stream *xdr, |
|
const void *data) |
|
{ |
|
const struct nfs42_clone_args *args = data; |
|
struct compound_hdr hdr = { |
|
.minorversion = nfs4_xdr_minorversion(&args->seq_args), |
|
}; |
|
|
|
encode_compound_hdr(xdr, req, &hdr); |
|
encode_sequence(xdr, &args->seq_args, &hdr); |
|
encode_putfh(xdr, args->src_fh, &hdr); |
|
encode_savefh(xdr, &hdr); |
|
encode_putfh(xdr, args->dst_fh, &hdr); |
|
encode_clone(xdr, args, &hdr); |
|
encode_getfattr(xdr, args->dst_bitmask, &hdr); |
|
encode_nops(&hdr); |
|
} |
|
|
|
/* |
|
* Encode LAYOUTERROR request |
|
*/ |
|
static void nfs4_xdr_enc_layouterror(struct rpc_rqst *req, |
|
struct xdr_stream *xdr, |
|
const void *data) |
|
{ |
|
const struct nfs42_layouterror_args *args = data; |
|
struct compound_hdr hdr = { |
|
.minorversion = nfs4_xdr_minorversion(&args->seq_args), |
|
}; |
|
int i; |
|
|
|
encode_compound_hdr(xdr, req, &hdr); |
|
encode_sequence(xdr, &args->seq_args, &hdr); |
|
encode_putfh(xdr, NFS_FH(args->inode), &hdr); |
|
for (i = 0; i < args->num_errors; i++) |
|
encode_layouterror(xdr, &args->errors[i], &hdr); |
|
encode_nops(&hdr); |
|
} |
|
|
|
static int decode_allocate(struct xdr_stream *xdr, struct nfs42_falloc_res *res) |
|
{ |
|
return decode_op_hdr(xdr, OP_ALLOCATE); |
|
} |
|
|
|
static int decode_write_response(struct xdr_stream *xdr, |
|
struct nfs42_write_res *res) |
|
{ |
|
__be32 *p; |
|
int status, count; |
|
|
|
p = xdr_inline_decode(xdr, 4); |
|
if (unlikely(!p)) |
|
return -EIO; |
|
count = be32_to_cpup(p); |
|
if (count > 1) |
|
return -EREMOTEIO; |
|
else if (count == 1) { |
|
status = decode_opaque_fixed(xdr, &res->stateid, |
|
NFS4_STATEID_SIZE); |
|
if (unlikely(status)) |
|
return -EIO; |
|
} |
|
p = xdr_inline_decode(xdr, 8 + 4); |
|
if (unlikely(!p)) |
|
return -EIO; |
|
p = xdr_decode_hyper(p, &res->count); |
|
res->verifier.committed = be32_to_cpup(p); |
|
return decode_verifier(xdr, &res->verifier.verifier); |
|
} |
|
|
|
static int decode_nl4_server(struct xdr_stream *xdr, struct nl4_server *ns) |
|
{ |
|
struct nfs42_netaddr *naddr; |
|
uint32_t dummy; |
|
char *dummy_str; |
|
__be32 *p; |
|
int status; |
|
|
|
/* nl_type */ |
|
p = xdr_inline_decode(xdr, 4); |
|
if (unlikely(!p)) |
|
return -EIO; |
|
ns->nl4_type = be32_to_cpup(p); |
|
switch (ns->nl4_type) { |
|
case NL4_NAME: |
|
case NL4_URL: |
|
status = decode_opaque_inline(xdr, &dummy, &dummy_str); |
|
if (unlikely(status)) |
|
return status; |
|
if (unlikely(dummy > NFS4_OPAQUE_LIMIT)) |
|
return -EIO; |
|
memcpy(&ns->u.nl4_str, dummy_str, dummy); |
|
ns->u.nl4_str_sz = dummy; |
|
break; |
|
case NL4_NETADDR: |
|
naddr = &ns->u.nl4_addr; |
|
|
|
/* netid string */ |
|
status = decode_opaque_inline(xdr, &dummy, &dummy_str); |
|
if (unlikely(status)) |
|
return status; |
|
if (unlikely(dummy > RPCBIND_MAXNETIDLEN)) |
|
return -EIO; |
|
naddr->netid_len = dummy; |
|
memcpy(naddr->netid, dummy_str, naddr->netid_len); |
|
|
|
/* uaddr string */ |
|
status = decode_opaque_inline(xdr, &dummy, &dummy_str); |
|
if (unlikely(status)) |
|
return status; |
|
if (unlikely(dummy > RPCBIND_MAXUADDRLEN)) |
|
return -EIO; |
|
naddr->addr_len = dummy; |
|
memcpy(naddr->addr, dummy_str, naddr->addr_len); |
|
break; |
|
default: |
|
WARN_ON_ONCE(1); |
|
return -EIO; |
|
} |
|
return 0; |
|
} |
|
|
|
static int decode_copy_requirements(struct xdr_stream *xdr, |
|
struct nfs42_copy_res *res) { |
|
__be32 *p; |
|
|
|
p = xdr_inline_decode(xdr, 4 + 4); |
|
if (unlikely(!p)) |
|
return -EIO; |
|
|
|
res->consecutive = be32_to_cpup(p++); |
|
res->synchronous = be32_to_cpup(p++); |
|
return 0; |
|
} |
|
|
|
static int decode_copy(struct xdr_stream *xdr, struct nfs42_copy_res *res) |
|
{ |
|
int status; |
|
|
|
status = decode_op_hdr(xdr, OP_COPY); |
|
if (status == NFS4ERR_OFFLOAD_NO_REQS) { |
|
status = decode_copy_requirements(xdr, res); |
|
if (status) |
|
return status; |
|
return NFS4ERR_OFFLOAD_NO_REQS; |
|
} else if (status) |
|
return status; |
|
|
|
status = decode_write_response(xdr, &res->write_res); |
|
if (status) |
|
return status; |
|
|
|
return decode_copy_requirements(xdr, res); |
|
} |
|
|
|
static int decode_offload_cancel(struct xdr_stream *xdr, |
|
struct nfs42_offload_status_res *res) |
|
{ |
|
return decode_op_hdr(xdr, OP_OFFLOAD_CANCEL); |
|
} |
|
|
|
static int decode_copy_notify(struct xdr_stream *xdr, |
|
struct nfs42_copy_notify_res *res) |
|
{ |
|
__be32 *p; |
|
int status, count; |
|
|
|
status = decode_op_hdr(xdr, OP_COPY_NOTIFY); |
|
if (status) |
|
return status; |
|
/* cnr_lease_time */ |
|
p = xdr_inline_decode(xdr, 12); |
|
if (unlikely(!p)) |
|
return -EIO; |
|
p = xdr_decode_hyper(p, &res->cnr_lease_time.seconds); |
|
res->cnr_lease_time.nseconds = be32_to_cpup(p); |
|
|
|
status = decode_opaque_fixed(xdr, &res->cnr_stateid, NFS4_STATEID_SIZE); |
|
if (unlikely(status)) |
|
return -EIO; |
|
|
|
/* number of source addresses */ |
|
p = xdr_inline_decode(xdr, 4); |
|
if (unlikely(!p)) |
|
return -EIO; |
|
|
|
count = be32_to_cpup(p); |
|
if (count > 1) |
|
pr_warn("NFS: %s: nsvr %d > Supported. Use first servers\n", |
|
__func__, count); |
|
|
|
status = decode_nl4_server(xdr, &res->cnr_src); |
|
if (unlikely(status)) |
|
return -EIO; |
|
return 0; |
|
} |
|
|
|
static int decode_deallocate(struct xdr_stream *xdr, struct nfs42_falloc_res *res) |
|
{ |
|
return decode_op_hdr(xdr, OP_DEALLOCATE); |
|
} |
|
|
|
static int decode_read_plus_data(struct xdr_stream *xdr, |
|
struct nfs_pgio_args *args, |
|
struct nfs_pgio_res *res) |
|
{ |
|
uint32_t count, recvd; |
|
uint64_t offset; |
|
__be32 *p; |
|
|
|
p = xdr_inline_decode(xdr, 8 + 4); |
|
if (!p) |
|
return 1; |
|
|
|
p = xdr_decode_hyper(p, &offset); |
|
count = be32_to_cpup(p); |
|
recvd = xdr_align_data(xdr, res->count, xdr_align_size(count)); |
|
if (recvd > count) |
|
recvd = count; |
|
if (res->count + recvd > args->count) { |
|
if (args->count > res->count) |
|
res->count += args->count - res->count; |
|
return 1; |
|
} |
|
res->count += recvd; |
|
if (count > recvd) |
|
return 1; |
|
return 0; |
|
} |
|
|
|
static int decode_read_plus_hole(struct xdr_stream *xdr, |
|
struct nfs_pgio_args *args, |
|
struct nfs_pgio_res *res, uint32_t *eof) |
|
{ |
|
uint64_t offset, length, recvd; |
|
__be32 *p; |
|
|
|
p = xdr_inline_decode(xdr, 8 + 8); |
|
if (!p) |
|
return 1; |
|
|
|
p = xdr_decode_hyper(p, &offset); |
|
p = xdr_decode_hyper(p, &length); |
|
if (offset != args->offset + res->count) { |
|
/* Server returned an out-of-sequence extent */ |
|
if (offset > args->offset + res->count || |
|
offset + length < args->offset + res->count) { |
|
dprintk("NFS: server returned out of sequence extent: " |
|
"offset/size = %llu/%llu != expected %llu\n", |
|
(unsigned long long)offset, |
|
(unsigned long long)length, |
|
(unsigned long long)(args->offset + |
|
res->count)); |
|
return 1; |
|
} |
|
length -= args->offset + res->count - offset; |
|
} |
|
if (length + res->count > args->count) { |
|
*eof = 0; |
|
if (unlikely(res->count >= args->count)) |
|
return 1; |
|
length = args->count - res->count; |
|
} |
|
recvd = xdr_expand_hole(xdr, res->count, length); |
|
res->count += recvd; |
|
|
|
if (recvd < length) |
|
return 1; |
|
return 0; |
|
} |
|
|
|
static int decode_read_plus(struct xdr_stream *xdr, struct nfs_pgio_res *res) |
|
{ |
|
struct nfs_pgio_header *hdr = |
|
container_of(res, struct nfs_pgio_header, res); |
|
struct nfs_pgio_args *args = &hdr->args; |
|
uint32_t eof, segments, type; |
|
int status, i; |
|
__be32 *p; |
|
|
|
status = decode_op_hdr(xdr, OP_READ_PLUS); |
|
if (status) |
|
return status; |
|
|
|
p = xdr_inline_decode(xdr, 4 + 4); |
|
if (unlikely(!p)) |
|
return -EIO; |
|
|
|
res->count = 0; |
|
eof = be32_to_cpup(p++); |
|
segments = be32_to_cpup(p++); |
|
if (segments == 0) |
|
goto out; |
|
|
|
for (i = 0; i < segments; i++) { |
|
p = xdr_inline_decode(xdr, 4); |
|
if (!p) |
|
goto early_out; |
|
|
|
type = be32_to_cpup(p++); |
|
if (type == NFS4_CONTENT_DATA) |
|
status = decode_read_plus_data(xdr, args, res); |
|
else if (type == NFS4_CONTENT_HOLE) |
|
status = decode_read_plus_hole(xdr, args, res, &eof); |
|
else |
|
return -EINVAL; |
|
|
|
if (status < 0) |
|
return status; |
|
if (status > 0) |
|
goto early_out; |
|
} |
|
|
|
out: |
|
res->eof = eof; |
|
return 0; |
|
early_out: |
|
if (unlikely(!i)) |
|
return -EIO; |
|
res->eof = 0; |
|
return 0; |
|
} |
|
|
|
static int decode_seek(struct xdr_stream *xdr, struct nfs42_seek_res *res) |
|
{ |
|
int status; |
|
__be32 *p; |
|
|
|
status = decode_op_hdr(xdr, OP_SEEK); |
|
if (status) |
|
return status; |
|
|
|
p = xdr_inline_decode(xdr, 4 + 8); |
|
if (unlikely(!p)) |
|
return -EIO; |
|
|
|
res->sr_eof = be32_to_cpup(p++); |
|
p = xdr_decode_hyper(p, &res->sr_offset); |
|
return 0; |
|
} |
|
|
|
static int decode_layoutstats(struct xdr_stream *xdr) |
|
{ |
|
return decode_op_hdr(xdr, OP_LAYOUTSTATS); |
|
} |
|
|
|
static int decode_clone(struct xdr_stream *xdr) |
|
{ |
|
return decode_op_hdr(xdr, OP_CLONE); |
|
} |
|
|
|
static int decode_layouterror(struct xdr_stream *xdr) |
|
{ |
|
return decode_op_hdr(xdr, OP_LAYOUTERROR); |
|
} |
|
|
|
/* |
|
* Decode ALLOCATE request |
|
*/ |
|
static int nfs4_xdr_dec_allocate(struct rpc_rqst *rqstp, |
|
struct xdr_stream *xdr, |
|
void *data) |
|
{ |
|
struct nfs42_falloc_res *res = data; |
|
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_allocate(xdr, res); |
|
if (status) |
|
goto out; |
|
decode_getfattr(xdr, res->falloc_fattr, res->falloc_server); |
|
out: |
|
return status; |
|
} |
|
|
|
/* |
|
* Decode COPY response |
|
*/ |
|
static int nfs4_xdr_dec_copy(struct rpc_rqst *rqstp, |
|
struct xdr_stream *xdr, |
|
void *data) |
|
{ |
|
struct nfs42_copy_res *res = data; |
|
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_copy(xdr, res); |
|
if (status) |
|
goto out; |
|
if (res->commit_res.verf) |
|
status = decode_commit(xdr, &res->commit_res); |
|
out: |
|
return status; |
|
} |
|
|
|
/* |
|
* Decode OFFLOAD_CANCEL response |
|
*/ |
|
static int nfs4_xdr_dec_offload_cancel(struct rpc_rqst *rqstp, |
|
struct xdr_stream *xdr, |
|
void *data) |
|
{ |
|
struct nfs42_offload_status_res *res = data; |
|
struct compound_hdr hdr; |
|
int status; |
|
|
|
status = decode_compound_hdr(xdr, &hdr); |
|
if (status) |
|
goto out; |
|
status = decode_sequence(xdr, &res->osr_seq_res, rqstp); |
|
if (status) |
|
goto out; |
|
status = decode_putfh(xdr); |
|
if (status) |
|
goto out; |
|
status = decode_offload_cancel(xdr, res); |
|
|
|
out: |
|
return status; |
|
} |
|
|
|
/* |
|
* Decode COPY_NOTIFY response |
|
*/ |
|
static int nfs4_xdr_dec_copy_notify(struct rpc_rqst *rqstp, |
|
struct xdr_stream *xdr, |
|
void *data) |
|
{ |
|
struct nfs42_copy_notify_res *res = data; |
|
struct compound_hdr hdr; |
|
int status; |
|
|
|
status = decode_compound_hdr(xdr, &hdr); |
|
if (status) |
|
goto out; |
|
status = decode_sequence(xdr, &res->cnr_seq_res, rqstp); |
|
if (status) |
|
goto out; |
|
status = decode_putfh(xdr); |
|
if (status) |
|
goto out; |
|
status = decode_copy_notify(xdr, res); |
|
|
|
out: |
|
return status; |
|
} |
|
|
|
/* |
|
* Decode DEALLOCATE request |
|
*/ |
|
static int nfs4_xdr_dec_deallocate(struct rpc_rqst *rqstp, |
|
struct xdr_stream *xdr, |
|
void *data) |
|
{ |
|
struct nfs42_falloc_res *res = data; |
|
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 READ_PLUS request |
|
*/ |
|
static int nfs4_xdr_dec_read_plus(struct rpc_rqst *rqstp, |
|
struct xdr_stream *xdr, |
|
void *data) |
|
{ |
|
struct nfs_pgio_res *res = data; |
|
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_read_plus(xdr, res); |
|
if (!status) |
|
status = res->count; |
|
out: |
|
return status; |
|
} |
|
|
|
/* |
|
* Decode SEEK request |
|
*/ |
|
static int nfs4_xdr_dec_seek(struct rpc_rqst *rqstp, |
|
struct xdr_stream *xdr, |
|
void *data) |
|
{ |
|
struct nfs42_seek_res *res = data; |
|
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, |
|
void *data) |
|
{ |
|
struct nfs42_layoutstat_res *res = data; |
|
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, |
|
void *data) |
|
{ |
|
struct nfs42_clone_res *res = data; |
|
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; |
|
} |
|
|
|
/* |
|
* Decode LAYOUTERROR request |
|
*/ |
|
static int nfs4_xdr_dec_layouterror(struct rpc_rqst *rqstp, |
|
struct xdr_stream *xdr, |
|
void *data) |
|
{ |
|
struct nfs42_layouterror_res *res = data; |
|
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); |
|
|
|
for (i = 0; i < res->num_errors && status == 0; i++) |
|
status = decode_layouterror(xdr); |
|
out: |
|
res->rpc_status = status; |
|
return status; |
|
} |
|
|
|
#ifdef CONFIG_NFS_V4_2 |
|
static void nfs4_xdr_enc_setxattr(struct rpc_rqst *req, struct xdr_stream *xdr, |
|
const void *data) |
|
{ |
|
const struct nfs42_setxattrargs *args = data; |
|
struct compound_hdr hdr = { |
|
.minorversion = nfs4_xdr_minorversion(&args->seq_args), |
|
}; |
|
|
|
encode_compound_hdr(xdr, req, &hdr); |
|
encode_sequence(xdr, &args->seq_args, &hdr); |
|
encode_putfh(xdr, args->fh, &hdr); |
|
encode_setxattr(xdr, args, &hdr); |
|
encode_nops(&hdr); |
|
} |
|
|
|
static int nfs4_xdr_dec_setxattr(struct rpc_rqst *req, struct xdr_stream *xdr, |
|
void *data) |
|
{ |
|
struct nfs42_setxattrres *res = data; |
|
struct compound_hdr hdr; |
|
int status; |
|
|
|
status = decode_compound_hdr(xdr, &hdr); |
|
if (status) |
|
goto out; |
|
status = decode_sequence(xdr, &res->seq_res, req); |
|
if (status) |
|
goto out; |
|
status = decode_putfh(xdr); |
|
if (status) |
|
goto out; |
|
|
|
status = decode_setxattr(xdr, &res->cinfo); |
|
out: |
|
return status; |
|
} |
|
|
|
static void nfs4_xdr_enc_getxattr(struct rpc_rqst *req, struct xdr_stream *xdr, |
|
const void *data) |
|
{ |
|
const struct nfs42_getxattrargs *args = data; |
|
struct compound_hdr hdr = { |
|
.minorversion = nfs4_xdr_minorversion(&args->seq_args), |
|
}; |
|
uint32_t replen; |
|
|
|
encode_compound_hdr(xdr, req, &hdr); |
|
encode_sequence(xdr, &args->seq_args, &hdr); |
|
encode_putfh(xdr, args->fh, &hdr); |
|
replen = hdr.replen + op_decode_hdr_maxsz + 1; |
|
encode_getxattr(xdr, args->xattr_name, &hdr); |
|
|
|
rpc_prepare_reply_pages(req, args->xattr_pages, 0, args->xattr_len, |
|
replen); |
|
|
|
encode_nops(&hdr); |
|
} |
|
|
|
static int nfs4_xdr_dec_getxattr(struct rpc_rqst *rqstp, |
|
struct xdr_stream *xdr, void *data) |
|
{ |
|
struct nfs42_getxattrres *res = data; |
|
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_getxattr(xdr, res, rqstp); |
|
out: |
|
return status; |
|
} |
|
|
|
static void nfs4_xdr_enc_listxattrs(struct rpc_rqst *req, |
|
struct xdr_stream *xdr, const void *data) |
|
{ |
|
const struct nfs42_listxattrsargs *args = data; |
|
struct compound_hdr hdr = { |
|
.minorversion = nfs4_xdr_minorversion(&args->seq_args), |
|
}; |
|
uint32_t replen; |
|
|
|
encode_compound_hdr(xdr, req, &hdr); |
|
encode_sequence(xdr, &args->seq_args, &hdr); |
|
encode_putfh(xdr, args->fh, &hdr); |
|
replen = hdr.replen + op_decode_hdr_maxsz + 2 + 1; |
|
encode_listxattrs(xdr, args, &hdr); |
|
|
|
rpc_prepare_reply_pages(req, args->xattr_pages, 0, args->count, replen); |
|
|
|
encode_nops(&hdr); |
|
} |
|
|
|
static int nfs4_xdr_dec_listxattrs(struct rpc_rqst *rqstp, |
|
struct xdr_stream *xdr, void *data) |
|
{ |
|
struct nfs42_listxattrsres *res = data; |
|
struct compound_hdr hdr; |
|
int status; |
|
|
|
xdr_set_scratch_page(xdr, res->scratch); |
|
|
|
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_listxattrs(xdr, res); |
|
out: |
|
return status; |
|
} |
|
|
|
static void nfs4_xdr_enc_removexattr(struct rpc_rqst *req, |
|
struct xdr_stream *xdr, const void *data) |
|
{ |
|
const struct nfs42_removexattrargs *args = data; |
|
struct compound_hdr hdr = { |
|
.minorversion = nfs4_xdr_minorversion(&args->seq_args), |
|
}; |
|
|
|
encode_compound_hdr(xdr, req, &hdr); |
|
encode_sequence(xdr, &args->seq_args, &hdr); |
|
encode_putfh(xdr, args->fh, &hdr); |
|
encode_removexattr(xdr, args->xattr_name, &hdr); |
|
encode_nops(&hdr); |
|
} |
|
|
|
static int nfs4_xdr_dec_removexattr(struct rpc_rqst *req, |
|
struct xdr_stream *xdr, void *data) |
|
{ |
|
struct nfs42_removexattrres *res = data; |
|
struct compound_hdr hdr; |
|
int status; |
|
|
|
status = decode_compound_hdr(xdr, &hdr); |
|
if (status) |
|
goto out; |
|
status = decode_sequence(xdr, &res->seq_res, req); |
|
if (status) |
|
goto out; |
|
status = decode_putfh(xdr); |
|
if (status) |
|
goto out; |
|
|
|
status = decode_removexattr(xdr, &res->cinfo); |
|
out: |
|
return status; |
|
} |
|
#endif |
|
#endif /* __LINUX_FS_NFS_NFS4_2XDR_H */
|
|
|