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https://github.com/torvalds/linux.git
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74f602dc96
Highlights include: Features: - NFSv3: Add emulation of lookupp() to improve open_by_filehandle() support. - A series of patches to improve readdir performance, particularly with large directories. - Basic support for using NFS/RDMA with the pNFS files and flexfiles drivers. - Micro-optimisations for RDMA. - RDMA tracing improvements. Bugfixes: - Fix a long standing bug with xs_read_xdr_buf() when receiving partial pages (Dan Aloni). - Various fixes for getxattr and listxattr, when used over non-TCP transports. - Fixes for containerised NFS from Sargun Dhillon. - switch nfsiod to be an UNBOUND workqueue (Neil Brown). - READDIR should not ask for security label information if there is no LSM policy. (Olga Kornievskaia) - Avoid using interval-based rebinding with TCP in lockd (Calum Mackay). - A series of RPC and NFS layer fixes to support the NFSv4.2 READ_PLUS code. - A couple of fixes for pnfs/flexfiles read failover Cleanups: - Various cleanups for the SUNRPC xdr code in conjunction with the READ_PLUS fixes. -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEESQctxSBg8JpV8KqEZwvnipYKAPIFAl/aiaIACgkQZwvnipYK APIOihAAvONscxrFSaGRh2ICNv9I/zXW/A5+R3qnkESPVLTqTPJVphoN7FlINAr1 B74pg6n4T4viycbvsogU2+kHrlJZO7B8lTkJL7ynm9Wgyw8+2Ga4QEn1bsAoqmuY b91p/+LfOLKrYeeojoH31PC73uOYYG1WHXJhjq0l9b5CTgThWpj6O3gDaFEbFvmz A7V3yqSp04sV70YxUhwelBHZ5BXdiXIKsPnIwvXXHuY7IcamrE4EA3wGCwtxkBnu 4dwbOtRXURNSev0r3n6FsH4wZl+/nvp9UpnGdPtVv94F1zm2JKLwkhoJejS/vpjq eyKc7ZXBQ0uHbTWI2Yj1YjA61VIUO0R0EDuyTAnRKDeaarID42n5kMG7J8cIglZR jQfyx99xm0eSrdwxC09tcRL/lBzYcOfc6pJo5P9BtaFtRvbp9iFIHuFKlrXbULd4 WrZzDMhiKVYGSTcTpfQyVoK2rCvn6W1Ida4iYeI0gkJ1v9X90UhbtJOyggn/bxyL DV/Qy40+l48n7CZfPU2eDv4WXqjKGRibpDoWMBLwUH20dDEX6kKYv3BfApFYGqyO /GTPAFUZarCy8BENvzZv/Jb9mt5pDQM5p9ZXpdUOhydLMMA+pauaT/Gr+pAHPIPx MPj546Gh2cEaT883xvRrJmQTG0nw/WscPNcHaJcgL5oYltmuwck= =IKWG -----END PGP SIGNATURE----- Merge tag 'nfs-for-5.11-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs Pull NFS client updates from Trond Myklebust: "Highlights include: Features: - NFSv3: Add emulation of lookupp() to improve open_by_filehandle() support - A series of patches to improve readdir performance, particularly with large directories - Basic support for using NFS/RDMA with the pNFS files and flexfiles drivers - Micro-optimisations for RDMA - RDMA tracing improvements Bugfixes: - Fix a long standing bug with xs_read_xdr_buf() when receiving partial pages (Dan Aloni) - Various fixes for getxattr and listxattr, when used over non-TCP transports - Fixes for containerised NFS from Sargun Dhillon - switch nfsiod to be an UNBOUND workqueue (Neil Brown) - READDIR should not ask for security label information if there is no LSM policy (Olga Kornievskaia) - Avoid using interval-based rebinding with TCP in lockd (Calum Mackay) - A series of RPC and NFS layer fixes to support the NFSv4.2 READ_PLUS code - A couple of fixes for pnfs/flexfiles read failover Cleanups: - Various cleanups for the SUNRPC xdr code in conjunction with the READ_PLUS fixes" * tag 'nfs-for-5.11-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (90 commits) NFS/pNFS: Fix a typo in ff_layout_resend_pnfs_read() pNFS/flexfiles: Avoid spurious layout returns in ff_layout_choose_ds_for_read NFSv4/pnfs: Add tracing for the deviceid cache fs/lockd: convert comma to semicolon NFSv4.2: fix error return on memory allocation failure NFSv4.2/pnfs: Don't use READ_PLUS with pNFS yet NFSv4.2: Deal with potential READ_PLUS data extent buffer overflow NFSv4.2: Don't error when exiting early on a READ_PLUS buffer overflow NFSv4.2: Handle hole lengths that exceed the READ_PLUS read buffer NFSv4.2: decode_read_plus_hole() needs to check the extent offset NFSv4.2: decode_read_plus_data() must skip padding after data segment NFSv4.2: Ensure we always reset the result->count in decode_read_plus() SUNRPC: When expanding the buffer, we may need grow the sparse pages SUNRPC: Cleanup - constify a number of xdr_buf helpers SUNRPC: Clean up open coded setting of the xdr_stream 'nwords' field SUNRPC: _copy_to/from_pages() now check for zero length SUNRPC: Cleanup xdr_shrink_bufhead() SUNRPC: Fix xdr_expand_hole() SUNRPC: Fixes for xdr_align_data() SUNRPC: _shift_data_left/right_pages should check the shift length ...
1631 lines
41 KiB
C
1631 lines
41 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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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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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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#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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#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,
|
|
const struct nfs42_copy_notify_args *args,
|
|
struct compound_hdr *hdr)
|
|
{
|
|
encode_op_hdr(xdr, OP_COPY_NOTIFY, decode_copy_notify_maxsz, hdr);
|
|
encode_nfs4_stateid(xdr, &args->cna_src_stateid);
|
|
encode_nl4_server(xdr, &args->cna_dst);
|
|
}
|
|
|
|
static void encode_deallocate(struct xdr_stream *xdr,
|
|
const struct nfs42_falloc_args *args,
|
|
struct compound_hdr *hdr)
|
|
{
|
|
encode_op_hdr(xdr, OP_DEALLOCATE, decode_deallocate_maxsz, hdr);
|
|
encode_fallocate(xdr, args);
|
|
}
|
|
|
|
static void encode_read_plus(struct xdr_stream *xdr,
|
|
const struct nfs_pgio_args *args,
|
|
struct compound_hdr *hdr)
|
|
{
|
|
encode_op_hdr(xdr, OP_READ_PLUS, decode_read_plus_maxsz, hdr);
|
|
encode_nfs4_stateid(xdr, &args->stateid);
|
|
encode_uint64(xdr, args->offset);
|
|
encode_uint32(xdr, args->count);
|
|
}
|
|
|
|
static void encode_seek(struct xdr_stream *xdr,
|
|
const struct nfs42_seek_args *args,
|
|
struct compound_hdr *hdr)
|
|
{
|
|
encode_op_hdr(xdr, OP_SEEK, decode_seek_maxsz, hdr);
|
|
encode_nfs4_stateid(xdr, &args->sa_stateid);
|
|
encode_uint64(xdr, args->sa_offset);
|
|
encode_uint32(xdr, args->sa_what);
|
|
}
|
|
|
|
static void encode_layoutstats(struct xdr_stream *xdr,
|
|
const struct nfs42_layoutstat_args *args,
|
|
struct nfs42_layoutstat_devinfo *devinfo,
|
|
struct compound_hdr *hdr)
|
|
{
|
|
__be32 *p;
|
|
|
|
encode_op_hdr(xdr, OP_LAYOUTSTATS, decode_layoutstats_maxsz, hdr);
|
|
p = reserve_space(xdr, 8 + 8);
|
|
p = xdr_encode_hyper(p, devinfo->offset);
|
|
p = xdr_encode_hyper(p, devinfo->length);
|
|
encode_nfs4_stateid(xdr, &args->stateid);
|
|
p = reserve_space(xdr, 4*8 + NFS4_DEVICEID4_SIZE + 4);
|
|
p = xdr_encode_hyper(p, devinfo->read_count);
|
|
p = xdr_encode_hyper(p, devinfo->read_bytes);
|
|
p = xdr_encode_hyper(p, devinfo->write_count);
|
|
p = xdr_encode_hyper(p, devinfo->write_bytes);
|
|
p = xdr_encode_opaque_fixed(p, devinfo->dev_id.data,
|
|
NFS4_DEVICEID4_SIZE);
|
|
/* Encode layoutupdate4 */
|
|
*p++ = cpu_to_be32(devinfo->layout_type);
|
|
if (devinfo->ld_private.ops)
|
|
devinfo->ld_private.ops->encode(xdr, args,
|
|
&devinfo->ld_private);
|
|
else
|
|
encode_uint32(xdr, 0);
|
|
}
|
|
|
|
static void encode_clone(struct xdr_stream *xdr,
|
|
const struct nfs42_clone_args *args,
|
|
struct compound_hdr *hdr)
|
|
{
|
|
__be32 *p;
|
|
|
|
encode_op_hdr(xdr, OP_CLONE, decode_clone_maxsz, hdr);
|
|
encode_nfs4_stateid(xdr, &args->src_stateid);
|
|
encode_nfs4_stateid(xdr, &args->dst_stateid);
|
|
p = reserve_space(xdr, 3*8);
|
|
p = xdr_encode_hyper(p, args->src_offset);
|
|
p = xdr_encode_hyper(p, args->dst_offset);
|
|
xdr_encode_hyper(p, args->count);
|
|
}
|
|
|
|
static void encode_device_error(struct xdr_stream *xdr,
|
|
const struct nfs42_device_error *error)
|
|
{
|
|
__be32 *p;
|
|
|
|
p = reserve_space(xdr, NFS4_DEVICEID4_SIZE + 2*4);
|
|
p = xdr_encode_opaque_fixed(p, error->dev_id.data,
|
|
NFS4_DEVICEID4_SIZE);
|
|
*p++ = cpu_to_be32(error->status);
|
|
*p = cpu_to_be32(error->opnum);
|
|
}
|
|
|
|
static void encode_layouterror(struct xdr_stream *xdr,
|
|
const struct nfs42_layout_error *args,
|
|
struct compound_hdr *hdr)
|
|
{
|
|
__be32 *p;
|
|
|
|
encode_op_hdr(xdr, OP_LAYOUTERROR, decode_layouterror_maxsz, hdr);
|
|
p = reserve_space(xdr, 8 + 8);
|
|
p = xdr_encode_hyper(p, args->offset);
|
|
p = xdr_encode_hyper(p, args->length);
|
|
encode_nfs4_stateid(xdr, &args->stateid);
|
|
p = reserve_space(xdr, 4);
|
|
*p = cpu_to_be32(1);
|
|
encode_device_error(xdr, &args->errors[0]);
|
|
}
|
|
|
|
static void encode_setxattr(struct xdr_stream *xdr,
|
|
const struct nfs42_setxattrargs *arg,
|
|
struct compound_hdr *hdr)
|
|
{
|
|
__be32 *p;
|
|
|
|
BUILD_BUG_ON(XATTR_CREATE != SETXATTR4_CREATE);
|
|
BUILD_BUG_ON(XATTR_REPLACE != SETXATTR4_REPLACE);
|
|
|
|
encode_op_hdr(xdr, OP_SETXATTR, decode_setxattr_maxsz, hdr);
|
|
p = reserve_space(xdr, 4);
|
|
*p = cpu_to_be32(arg->xattr_flags);
|
|
encode_string(xdr, strlen(arg->xattr_name), arg->xattr_name);
|
|
p = reserve_space(xdr, 4);
|
|
*p = cpu_to_be32(arg->xattr_len);
|
|
if (arg->xattr_len)
|
|
xdr_write_pages(xdr, arg->xattr_pages, 0, arg->xattr_len);
|
|
}
|
|
|
|
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 */
|