linux/fs/nfsd/xdr4cb.h
Dai Ngo 6487a13b5c NFSD: add support for CB_GETATTR callback
Includes:
   . CB_GETATTR proc for nfs4_cb_procedures[]
   . XDR encoding and decoding function for CB_GETATTR request/reply
   . add nfs4_cb_fattr to nfs4_delegation for sending CB_GETATTR
     and store file attributes from client's reply.

Signed-off-by: Dai Ngo <dai.ngo@oracle.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
2024-03-01 09:12:31 -05:00

75 lines
2.6 KiB
C

/* SPDX-License-Identifier: GPL-2.0 */
#define NFS4_MAXTAGLEN 20
#define NFS4_enc_cb_null_sz 0
#define NFS4_dec_cb_null_sz 0
#define cb_compound_enc_hdr_sz 4
#define cb_compound_dec_hdr_sz (3 + (NFS4_MAXTAGLEN >> 2))
#define sessionid_sz (NFS4_MAX_SESSIONID_LEN >> 2)
#define cb_sequence_enc_sz (sessionid_sz + 4 + \
1 /* no referring calls list yet */)
#define cb_sequence_dec_sz (op_dec_sz + sessionid_sz + 4)
#define op_enc_sz 1
#define op_dec_sz 2
#define enc_nfs4_fh_sz (1 + (NFS4_FHSIZE >> 2))
#define enc_stateid_sz (NFS4_STATEID_SIZE >> 2)
#define NFS4_enc_cb_recall_sz (cb_compound_enc_hdr_sz + \
cb_sequence_enc_sz + \
1 + enc_stateid_sz + \
enc_nfs4_fh_sz)
#define NFS4_dec_cb_recall_sz (cb_compound_dec_hdr_sz + \
cb_sequence_dec_sz + \
op_dec_sz)
#define NFS4_enc_cb_layout_sz (cb_compound_enc_hdr_sz + \
cb_sequence_enc_sz + \
1 + 3 + \
enc_nfs4_fh_sz + 4)
#define NFS4_dec_cb_layout_sz (cb_compound_dec_hdr_sz + \
cb_sequence_dec_sz + \
op_dec_sz)
#define NFS4_enc_cb_notify_lock_sz (cb_compound_enc_hdr_sz + \
cb_sequence_enc_sz + \
2 + 1 + \
XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
enc_nfs4_fh_sz)
#define NFS4_dec_cb_notify_lock_sz (cb_compound_dec_hdr_sz + \
cb_sequence_dec_sz + \
op_dec_sz)
#define enc_cb_offload_info_sz (1 + 1 + 2 + 1 + \
XDR_QUADLEN(NFS4_VERIFIER_SIZE))
#define NFS4_enc_cb_offload_sz (cb_compound_enc_hdr_sz + \
cb_sequence_enc_sz + \
enc_nfs4_fh_sz + \
enc_stateid_sz + \
enc_cb_offload_info_sz)
#define NFS4_dec_cb_offload_sz (cb_compound_dec_hdr_sz + \
cb_sequence_dec_sz + \
op_dec_sz)
#define NFS4_enc_cb_recall_any_sz (cb_compound_enc_hdr_sz + \
cb_sequence_enc_sz + \
1 + 1 + 1)
#define NFS4_dec_cb_recall_any_sz (cb_compound_dec_hdr_sz + \
cb_sequence_dec_sz + \
op_dec_sz)
/*
* 1: CB_GETATTR opcode (32-bit)
* N: file_handle
* 1: number of entry in attribute array (32-bit)
* 1: entry 0 in attribute array (32-bit)
*/
#define NFS4_enc_cb_getattr_sz (cb_compound_enc_hdr_sz + \
cb_sequence_enc_sz + \
1 + enc_nfs4_fh_sz + 1 + 1)
/*
* 4: fattr_bitmap_maxsz
* 1: attribute array len
* 2: change attr (64-bit)
* 2: size (64-bit)
*/
#define NFS4_dec_cb_getattr_sz (cb_compound_dec_hdr_sz + \
cb_sequence_dec_sz + 4 + 1 + 2 + 2 + op_dec_sz)