Anna Schumaker | 1c6dcbe | 2014-09-26 13:58:48 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2014 Anna Schumaker <Anna.Schumaker@Netapp.com> |
| 3 | */ |
| 4 | #ifndef __LINUX_FS_NFS_NFS4_2XDR_H |
| 5 | #define __LINUX_FS_NFS_NFS4_2XDR_H |
| 6 | |
Anna Schumaker | f4ac167 | 2014-11-25 13:18:15 -0500 | [diff] [blame^] | 7 | #define encode_fallocate_maxsz (encode_stateid_maxsz + \ |
| 8 | 2 /* offset */ + \ |
| 9 | 2 /* length */) |
| 10 | #define encode_allocate_maxsz (op_encode_hdr_maxsz + \ |
| 11 | encode_fallocate_maxsz) |
| 12 | #define decode_allocate_maxsz (op_decode_hdr_maxsz) |
Anna Schumaker | 1c6dcbe | 2014-09-26 13:58:48 -0400 | [diff] [blame] | 13 | #define encode_seek_maxsz (op_encode_hdr_maxsz + \ |
| 14 | encode_stateid_maxsz + \ |
| 15 | 2 /* offset */ + \ |
| 16 | 1 /* whence */) |
| 17 | #define decode_seek_maxsz (op_decode_hdr_maxsz + \ |
| 18 | 1 /* eof */ + \ |
| 19 | 1 /* whence */ + \ |
| 20 | 2 /* offset */ + \ |
| 21 | 2 /* length */) |
| 22 | |
Anna Schumaker | f4ac167 | 2014-11-25 13:18:15 -0500 | [diff] [blame^] | 23 | #define NFS4_enc_allocate_sz (compound_encode_hdr_maxsz + \ |
| 24 | encode_putfh_maxsz + \ |
| 25 | encode_allocate_maxsz) |
| 26 | #define NFS4_dec_allocate_sz (compound_decode_hdr_maxsz + \ |
| 27 | decode_putfh_maxsz + \ |
| 28 | decode_allocate_maxsz) |
Anna Schumaker | 1c6dcbe | 2014-09-26 13:58:48 -0400 | [diff] [blame] | 29 | #define NFS4_enc_seek_sz (compound_encode_hdr_maxsz + \ |
| 30 | encode_putfh_maxsz + \ |
| 31 | encode_seek_maxsz) |
| 32 | #define NFS4_dec_seek_sz (compound_decode_hdr_maxsz + \ |
| 33 | decode_putfh_maxsz + \ |
| 34 | decode_seek_maxsz) |
| 35 | |
| 36 | |
Anna Schumaker | f4ac167 | 2014-11-25 13:18:15 -0500 | [diff] [blame^] | 37 | static void encode_fallocate(struct xdr_stream *xdr, |
| 38 | struct nfs42_falloc_args *args) |
| 39 | { |
| 40 | encode_nfs4_stateid(xdr, &args->falloc_stateid); |
| 41 | encode_uint64(xdr, args->falloc_offset); |
| 42 | encode_uint64(xdr, args->falloc_length); |
| 43 | } |
| 44 | |
| 45 | static void encode_allocate(struct xdr_stream *xdr, |
| 46 | struct nfs42_falloc_args *args, |
| 47 | struct compound_hdr *hdr) |
| 48 | { |
| 49 | encode_op_hdr(xdr, OP_ALLOCATE, decode_allocate_maxsz, hdr); |
| 50 | encode_fallocate(xdr, args); |
| 51 | } |
| 52 | |
Anna Schumaker | 1c6dcbe | 2014-09-26 13:58:48 -0400 | [diff] [blame] | 53 | static void encode_seek(struct xdr_stream *xdr, |
| 54 | struct nfs42_seek_args *args, |
| 55 | struct compound_hdr *hdr) |
| 56 | { |
| 57 | encode_op_hdr(xdr, OP_SEEK, decode_seek_maxsz, hdr); |
| 58 | encode_nfs4_stateid(xdr, &args->sa_stateid); |
| 59 | encode_uint64(xdr, args->sa_offset); |
| 60 | encode_uint32(xdr, args->sa_what); |
| 61 | } |
| 62 | |
| 63 | /* |
Anna Schumaker | f4ac167 | 2014-11-25 13:18:15 -0500 | [diff] [blame^] | 64 | * Encode ALLOCATE request |
| 65 | */ |
| 66 | static void nfs4_xdr_enc_allocate(struct rpc_rqst *req, |
| 67 | struct xdr_stream *xdr, |
| 68 | struct nfs42_falloc_args *args) |
| 69 | { |
| 70 | struct compound_hdr hdr = { |
| 71 | .minorversion = nfs4_xdr_minorversion(&args->seq_args), |
| 72 | }; |
| 73 | |
| 74 | encode_compound_hdr(xdr, req, &hdr); |
| 75 | encode_sequence(xdr, &args->seq_args, &hdr); |
| 76 | encode_putfh(xdr, args->falloc_fh, &hdr); |
| 77 | encode_allocate(xdr, args, &hdr); |
| 78 | encode_nops(&hdr); |
| 79 | } |
| 80 | |
| 81 | /* |
Anna Schumaker | 1c6dcbe | 2014-09-26 13:58:48 -0400 | [diff] [blame] | 82 | * Encode SEEK request |
| 83 | */ |
| 84 | static void nfs4_xdr_enc_seek(struct rpc_rqst *req, |
| 85 | struct xdr_stream *xdr, |
| 86 | struct nfs42_seek_args *args) |
| 87 | { |
| 88 | struct compound_hdr hdr = { |
| 89 | .minorversion = nfs4_xdr_minorversion(&args->seq_args), |
| 90 | }; |
| 91 | |
| 92 | encode_compound_hdr(xdr, req, &hdr); |
| 93 | encode_sequence(xdr, &args->seq_args, &hdr); |
| 94 | encode_putfh(xdr, args->sa_fh, &hdr); |
| 95 | encode_seek(xdr, args, &hdr); |
| 96 | encode_nops(&hdr); |
| 97 | } |
| 98 | |
Anna Schumaker | f4ac167 | 2014-11-25 13:18:15 -0500 | [diff] [blame^] | 99 | static int decode_allocate(struct xdr_stream *xdr, struct nfs42_falloc_res *res) |
| 100 | { |
| 101 | return decode_op_hdr(xdr, OP_ALLOCATE); |
| 102 | } |
| 103 | |
Anna Schumaker | 1c6dcbe | 2014-09-26 13:58:48 -0400 | [diff] [blame] | 104 | static int decode_seek(struct xdr_stream *xdr, struct nfs42_seek_res *res) |
| 105 | { |
| 106 | int status; |
| 107 | __be32 *p; |
| 108 | |
| 109 | status = decode_op_hdr(xdr, OP_SEEK); |
| 110 | if (status) |
| 111 | return status; |
| 112 | |
| 113 | p = xdr_inline_decode(xdr, 4 + 8); |
| 114 | if (unlikely(!p)) |
| 115 | goto out_overflow; |
| 116 | |
| 117 | res->sr_eof = be32_to_cpup(p++); |
| 118 | p = xdr_decode_hyper(p, &res->sr_offset); |
| 119 | return 0; |
| 120 | |
| 121 | out_overflow: |
| 122 | print_overflow_msg(__func__, xdr); |
| 123 | return -EIO; |
| 124 | } |
| 125 | |
| 126 | /* |
Anna Schumaker | f4ac167 | 2014-11-25 13:18:15 -0500 | [diff] [blame^] | 127 | * Decode ALLOCATE request |
| 128 | */ |
| 129 | static int nfs4_xdr_dec_allocate(struct rpc_rqst *rqstp, |
| 130 | struct xdr_stream *xdr, |
| 131 | struct nfs42_falloc_res *res) |
| 132 | { |
| 133 | struct compound_hdr hdr; |
| 134 | int status; |
| 135 | |
| 136 | status = decode_compound_hdr(xdr, &hdr); |
| 137 | if (status) |
| 138 | goto out; |
| 139 | status = decode_sequence(xdr, &res->seq_res, rqstp); |
| 140 | if (status) |
| 141 | goto out; |
| 142 | status = decode_putfh(xdr); |
| 143 | if (status) |
| 144 | goto out; |
| 145 | status = decode_allocate(xdr, res); |
| 146 | out: |
| 147 | return status; |
| 148 | } |
| 149 | |
| 150 | /* |
Anna Schumaker | 1c6dcbe | 2014-09-26 13:58:48 -0400 | [diff] [blame] | 151 | * Decode SEEK request |
| 152 | */ |
| 153 | static int nfs4_xdr_dec_seek(struct rpc_rqst *rqstp, |
| 154 | struct xdr_stream *xdr, |
| 155 | struct nfs42_seek_res *res) |
| 156 | { |
| 157 | struct compound_hdr hdr; |
| 158 | int status; |
| 159 | |
| 160 | status = decode_compound_hdr(xdr, &hdr); |
| 161 | if (status) |
| 162 | goto out; |
| 163 | status = decode_sequence(xdr, &res->seq_res, rqstp); |
| 164 | if (status) |
| 165 | goto out; |
| 166 | status = decode_putfh(xdr); |
| 167 | if (status) |
| 168 | goto out; |
| 169 | status = decode_seek(xdr, res); |
| 170 | out: |
| 171 | return status; |
| 172 | } |
| 173 | #endif /* __LINUX_FS_NFS_NFS4_2XDR_H */ |