11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * linux/fs/nfs/nfs3xdr.c 31da177e4SLinus Torvalds * 41da177e4SLinus Torvalds * XDR functions to encode/decode NFSv3 RPC arguments and results. 51da177e4SLinus Torvalds * 61da177e4SLinus Torvalds * Copyright (C) 1996, 1997 Olaf Kirch 71da177e4SLinus Torvalds */ 81da177e4SLinus Torvalds 91da177e4SLinus Torvalds #include <linux/param.h> 101da177e4SLinus Torvalds #include <linux/time.h> 111da177e4SLinus Torvalds #include <linux/mm.h> 121da177e4SLinus Torvalds #include <linux/errno.h> 131da177e4SLinus Torvalds #include <linux/string.h> 141da177e4SLinus Torvalds #include <linux/in.h> 151da177e4SLinus Torvalds #include <linux/pagemap.h> 161da177e4SLinus Torvalds #include <linux/proc_fs.h> 171da177e4SLinus Torvalds #include <linux/kdev_t.h> 181da177e4SLinus Torvalds #include <linux/sunrpc/clnt.h> 191da177e4SLinus Torvalds #include <linux/nfs.h> 201da177e4SLinus Torvalds #include <linux/nfs3.h> 211da177e4SLinus Torvalds #include <linux/nfs_fs.h> 22b7fa0554SAndreas Gruenbacher #include <linux/nfsacl.h> 23f7b422b1SDavid Howells #include "internal.h" 241da177e4SLinus Torvalds 251da177e4SLinus Torvalds #define NFSDBG_FACILITY NFSDBG_XDR 261da177e4SLinus Torvalds 271da177e4SLinus Torvalds /* Mapping from NFS error code to "errno" error code. */ 281da177e4SLinus Torvalds #define errno_NFSERR_IO EIO 291da177e4SLinus Torvalds 301da177e4SLinus Torvalds /* 311da177e4SLinus Torvalds * Declare the space requirements for NFS arguments and replies as 321da177e4SLinus Torvalds * number of 32bit-words 331da177e4SLinus Torvalds */ 341da177e4SLinus Torvalds #define NFS3_fhandle_sz (1+16) 351da177e4SLinus Torvalds #define NFS3_fh_sz (NFS3_fhandle_sz) /* shorthand */ 361da177e4SLinus Torvalds #define NFS3_sattr_sz (15) 371da177e4SLinus Torvalds #define NFS3_filename_sz (1+(NFS3_MAXNAMLEN>>2)) 381da177e4SLinus Torvalds #define NFS3_path_sz (1+(NFS3_MAXPATHLEN>>2)) 391da177e4SLinus Torvalds #define NFS3_fattr_sz (21) 40d9c407b1SChuck Lever #define NFS3_cookieverf_sz (NFS3_COOKIEVERFSIZE>>2) 411da177e4SLinus Torvalds #define NFS3_wcc_attr_sz (6) 421da177e4SLinus Torvalds #define NFS3_pre_op_attr_sz (1+NFS3_wcc_attr_sz) 431da177e4SLinus Torvalds #define NFS3_post_op_attr_sz (1+NFS3_fattr_sz) 441da177e4SLinus Torvalds #define NFS3_wcc_data_sz (NFS3_pre_op_attr_sz+NFS3_post_op_attr_sz) 451da177e4SLinus Torvalds #define NFS3_diropargs_sz (NFS3_fh_sz+NFS3_filename_sz) 46ad96b5b5SChuck Lever 47ad96b5b5SChuck Lever #define NFS3_getattrargs_sz (NFS3_fh_sz) 48ad96b5b5SChuck Lever #define NFS3_setattrargs_sz (NFS3_fh_sz+NFS3_sattr_sz+3) 49ad96b5b5SChuck Lever #define NFS3_lookupargs_sz (NFS3_fh_sz+NFS3_filename_sz) 501da177e4SLinus Torvalds #define NFS3_accessargs_sz (NFS3_fh_sz+1) 511da177e4SLinus Torvalds #define NFS3_readlinkargs_sz (NFS3_fh_sz) 521da177e4SLinus Torvalds #define NFS3_readargs_sz (NFS3_fh_sz+3) 531da177e4SLinus Torvalds #define NFS3_writeargs_sz (NFS3_fh_sz+5) 541da177e4SLinus Torvalds #define NFS3_createargs_sz (NFS3_diropargs_sz+NFS3_sattr_sz) 551da177e4SLinus Torvalds #define NFS3_mkdirargs_sz (NFS3_diropargs_sz+NFS3_sattr_sz) 5694a6d753SChuck Lever #define NFS3_symlinkargs_sz (NFS3_diropargs_sz+1+NFS3_sattr_sz) 571da177e4SLinus Torvalds #define NFS3_mknodargs_sz (NFS3_diropargs_sz+2+NFS3_sattr_sz) 58ad96b5b5SChuck Lever #define NFS3_removeargs_sz (NFS3_fh_sz+NFS3_filename_sz) 591da177e4SLinus Torvalds #define NFS3_renameargs_sz (NFS3_diropargs_sz+NFS3_diropargs_sz) 601da177e4SLinus Torvalds #define NFS3_linkargs_sz (NFS3_fh_sz+NFS3_diropargs_sz) 61d9c407b1SChuck Lever #define NFS3_readdirargs_sz (NFS3_fh_sz+NFS3_cookieverf_sz+3) 62d9c407b1SChuck Lever #define NFS3_readdirplusargs_sz (NFS3_fh_sz+NFS3_cookieverf_sz+4) 631da177e4SLinus Torvalds #define NFS3_commitargs_sz (NFS3_fh_sz+3) 641da177e4SLinus Torvalds 65f5fc3c50SChuck Lever #define NFS3_getattrres_sz (1+NFS3_fattr_sz) 66f5fc3c50SChuck Lever #define NFS3_setattrres_sz (1+NFS3_wcc_data_sz) 67f5fc3c50SChuck Lever #define NFS3_removeres_sz (NFS3_setattrres_sz) 681da177e4SLinus Torvalds #define NFS3_lookupres_sz (1+NFS3_fh_sz+(2 * NFS3_post_op_attr_sz)) 691da177e4SLinus Torvalds #define NFS3_accessres_sz (1+NFS3_post_op_attr_sz+1) 701da177e4SLinus Torvalds #define NFS3_readlinkres_sz (1+NFS3_post_op_attr_sz+1) 711da177e4SLinus Torvalds #define NFS3_readres_sz (1+NFS3_post_op_attr_sz+3) 721da177e4SLinus Torvalds #define NFS3_writeres_sz (1+NFS3_wcc_data_sz+4) 731da177e4SLinus Torvalds #define NFS3_createres_sz (1+NFS3_fh_sz+NFS3_post_op_attr_sz+NFS3_wcc_data_sz) 741da177e4SLinus Torvalds #define NFS3_renameres_sz (1+(2 * NFS3_wcc_data_sz)) 751da177e4SLinus Torvalds #define NFS3_linkres_sz (1+NFS3_post_op_attr_sz+NFS3_wcc_data_sz) 761da177e4SLinus Torvalds #define NFS3_readdirres_sz (1+NFS3_post_op_attr_sz+2) 771da177e4SLinus Torvalds #define NFS3_fsstatres_sz (1+NFS3_post_op_attr_sz+13) 781da177e4SLinus Torvalds #define NFS3_fsinfores_sz (1+NFS3_post_op_attr_sz+12) 791da177e4SLinus Torvalds #define NFS3_pathconfres_sz (1+NFS3_post_op_attr_sz+6) 801da177e4SLinus Torvalds #define NFS3_commitres_sz (1+NFS3_wcc_data_sz+2) 811da177e4SLinus Torvalds 82b7fa0554SAndreas Gruenbacher #define ACL3_getaclargs_sz (NFS3_fh_sz+1) 83ae46141fSTrond Myklebust #define ACL3_setaclargs_sz (NFS3_fh_sz+1+ \ 84ae46141fSTrond Myklebust XDR_QUADLEN(NFS_ACL_INLINE_BUFSIZE)) 85ae46141fSTrond Myklebust #define ACL3_getaclres_sz (1+NFS3_post_op_attr_sz+1+ \ 86ae46141fSTrond Myklebust XDR_QUADLEN(NFS_ACL_INLINE_BUFSIZE)) 87b7fa0554SAndreas Gruenbacher #define ACL3_setaclres_sz (1+NFS3_post_op_attr_sz) 88b7fa0554SAndreas Gruenbacher 895e7e5a0dSBryan Schumaker static int nfs3_stat_to_errno(enum nfs_stat); 905e7e5a0dSBryan Schumaker 911da177e4SLinus Torvalds /* 921da177e4SLinus Torvalds * Map file type to S_IFMT bits 931da177e4SLinus Torvalds */ 94bca79478STrond Myklebust static const umode_t nfs_type2fmt[] = { 95bca79478STrond Myklebust [NF3BAD] = 0, 96bca79478STrond Myklebust [NF3REG] = S_IFREG, 97bca79478STrond Myklebust [NF3DIR] = S_IFDIR, 98bca79478STrond Myklebust [NF3BLK] = S_IFBLK, 99bca79478STrond Myklebust [NF3CHR] = S_IFCHR, 100bca79478STrond Myklebust [NF3LNK] = S_IFLNK, 101bca79478STrond Myklebust [NF3SOCK] = S_IFSOCK, 102bca79478STrond Myklebust [NF3FIFO] = S_IFIFO, 1031da177e4SLinus Torvalds }; 1041da177e4SLinus Torvalds 1051da177e4SLinus Torvalds /* 106d9c407b1SChuck Lever * While encoding arguments, set up the reply buffer in advance to 107d9c407b1SChuck Lever * receive reply data directly into the page cache. 108d9c407b1SChuck Lever */ 109d9c407b1SChuck Lever static void prepare_reply_buffer(struct rpc_rqst *req, struct page **pages, 110d9c407b1SChuck Lever unsigned int base, unsigned int len, 111d9c407b1SChuck Lever unsigned int bufsize) 112d9c407b1SChuck Lever { 113d9c407b1SChuck Lever struct rpc_auth *auth = req->rq_cred->cr_auth; 114d9c407b1SChuck Lever unsigned int replen; 115d9c407b1SChuck Lever 116d9c407b1SChuck Lever replen = RPC_REPHDRSIZE + auth->au_rslack + bufsize; 117d9c407b1SChuck Lever xdr_inline_pages(&req->rq_rcv_buf, replen << 2, pages, base, len); 118d9c407b1SChuck Lever } 119d9c407b1SChuck Lever 120e4f93234SChuck Lever /* 121e4f93234SChuck Lever * Handle decode buffer overflows out-of-line. 122e4f93234SChuck Lever */ 123e4f93234SChuck Lever static void print_overflow_msg(const char *func, const struct xdr_stream *xdr) 124e4f93234SChuck Lever { 125e4f93234SChuck Lever dprintk("NFS: %s prematurely hit the end of our receive buffer. " 126e4f93234SChuck Lever "Remaining buffer length is %tu words.\n", 127e4f93234SChuck Lever func, xdr->end - xdr->p); 128e4f93234SChuck Lever } 129e4f93234SChuck Lever 130d9c407b1SChuck Lever 131d9c407b1SChuck Lever /* 132d9c407b1SChuck Lever * Encode/decode NFSv3 basic data types 133d9c407b1SChuck Lever * 134d9c407b1SChuck Lever * Basic NFSv3 data types are defined in section 2.5 of RFC 1813: 135d9c407b1SChuck Lever * "NFS Version 3 Protocol Specification". 136d9c407b1SChuck Lever * 137d9c407b1SChuck Lever * Not all basic data types have their own encoding and decoding 138d9c407b1SChuck Lever * functions. For run-time efficiency, some data types are encoded 139d9c407b1SChuck Lever * or decoded inline. 140d9c407b1SChuck Lever */ 141d9c407b1SChuck Lever 142d9c407b1SChuck Lever static void encode_uint32(struct xdr_stream *xdr, u32 value) 143d9c407b1SChuck Lever { 144d9c407b1SChuck Lever __be32 *p = xdr_reserve_space(xdr, 4); 145d9c407b1SChuck Lever *p = cpu_to_be32(value); 146d9c407b1SChuck Lever } 147d9c407b1SChuck Lever 148e4f93234SChuck Lever static int decode_uint32(struct xdr_stream *xdr, u32 *value) 149e4f93234SChuck Lever { 150e4f93234SChuck Lever __be32 *p; 151e4f93234SChuck Lever 152e4f93234SChuck Lever p = xdr_inline_decode(xdr, 4); 153e4f93234SChuck Lever if (unlikely(p == NULL)) 154e4f93234SChuck Lever goto out_overflow; 155e4f93234SChuck Lever *value = be32_to_cpup(p); 156e4f93234SChuck Lever return 0; 157e4f93234SChuck Lever out_overflow: 158e4f93234SChuck Lever print_overflow_msg(__func__, xdr); 159e4f93234SChuck Lever return -EIO; 160e4f93234SChuck Lever } 161e4f93234SChuck Lever 162e4f93234SChuck Lever static int decode_uint64(struct xdr_stream *xdr, u64 *value) 163e4f93234SChuck Lever { 164e4f93234SChuck Lever __be32 *p; 165e4f93234SChuck Lever 166e4f93234SChuck Lever p = xdr_inline_decode(xdr, 8); 167e4f93234SChuck Lever if (unlikely(p == NULL)) 168e4f93234SChuck Lever goto out_overflow; 169e4f93234SChuck Lever xdr_decode_hyper(p, value); 170e4f93234SChuck Lever return 0; 171e4f93234SChuck Lever out_overflow: 172e4f93234SChuck Lever print_overflow_msg(__func__, xdr); 173e4f93234SChuck Lever return -EIO; 174e4f93234SChuck Lever } 175e4f93234SChuck Lever 176e4f93234SChuck Lever /* 177e4f93234SChuck Lever * fileid3 178e4f93234SChuck Lever * 179e4f93234SChuck Lever * typedef uint64 fileid3; 180e4f93234SChuck Lever */ 181f6048709SChuck Lever static __be32 *xdr_decode_fileid3(__be32 *p, u64 *fileid) 182f6048709SChuck Lever { 183f6048709SChuck Lever return xdr_decode_hyper(p, fileid); 184f6048709SChuck Lever } 185f6048709SChuck Lever 186e4f93234SChuck Lever static int decode_fileid3(struct xdr_stream *xdr, u64 *fileid) 187e4f93234SChuck Lever { 188e4f93234SChuck Lever return decode_uint64(xdr, fileid); 189e4f93234SChuck Lever } 190e4f93234SChuck Lever 191d9c407b1SChuck Lever /* 192d9c407b1SChuck Lever * filename3 193d9c407b1SChuck Lever * 194d9c407b1SChuck Lever * typedef string filename3<>; 195d9c407b1SChuck Lever */ 196d9c407b1SChuck Lever static void encode_filename3(struct xdr_stream *xdr, 197d9c407b1SChuck Lever const char *name, u32 length) 198d9c407b1SChuck Lever { 199d9c407b1SChuck Lever __be32 *p; 200d9c407b1SChuck Lever 2017fc38846STrond Myklebust WARN_ON_ONCE(length > NFS3_MAXNAMLEN); 202d9c407b1SChuck Lever p = xdr_reserve_space(xdr, 4 + length); 203d9c407b1SChuck Lever xdr_encode_opaque(p, name, length); 204d9c407b1SChuck Lever } 205d9c407b1SChuck Lever 206e4f93234SChuck Lever static int decode_inline_filename3(struct xdr_stream *xdr, 207e4f93234SChuck Lever const char **name, u32 *length) 208e4f93234SChuck Lever { 209e4f93234SChuck Lever __be32 *p; 210e4f93234SChuck Lever u32 count; 211e4f93234SChuck Lever 212e4f93234SChuck Lever p = xdr_inline_decode(xdr, 4); 213e4f93234SChuck Lever if (unlikely(p == NULL)) 214e4f93234SChuck Lever goto out_overflow; 215e4f93234SChuck Lever count = be32_to_cpup(p); 216e4f93234SChuck Lever if (count > NFS3_MAXNAMLEN) 217e4f93234SChuck Lever goto out_nametoolong; 218e4f93234SChuck Lever p = xdr_inline_decode(xdr, count); 219e4f93234SChuck Lever if (unlikely(p == NULL)) 220e4f93234SChuck Lever goto out_overflow; 221e4f93234SChuck Lever *name = (const char *)p; 222e4f93234SChuck Lever *length = count; 223e4f93234SChuck Lever return 0; 224e4f93234SChuck Lever 225e4f93234SChuck Lever out_nametoolong: 226e4f93234SChuck Lever dprintk("NFS: returned filename too long: %u\n", count); 227e4f93234SChuck Lever return -ENAMETOOLONG; 228e4f93234SChuck Lever out_overflow: 229e4f93234SChuck Lever print_overflow_msg(__func__, xdr); 230e4f93234SChuck Lever return -EIO; 231e4f93234SChuck Lever } 232e4f93234SChuck Lever 233d9c407b1SChuck Lever /* 234d9c407b1SChuck Lever * nfspath3 235d9c407b1SChuck Lever * 236d9c407b1SChuck Lever * typedef string nfspath3<>; 237d9c407b1SChuck Lever */ 238d9c407b1SChuck Lever static void encode_nfspath3(struct xdr_stream *xdr, struct page **pages, 239d9c407b1SChuck Lever const u32 length) 240d9c407b1SChuck Lever { 241d9c407b1SChuck Lever encode_uint32(xdr, length); 242d9c407b1SChuck Lever xdr_write_pages(xdr, pages, 0, length); 243d9c407b1SChuck Lever } 244d9c407b1SChuck Lever 245e4f93234SChuck Lever static int decode_nfspath3(struct xdr_stream *xdr) 246e4f93234SChuck Lever { 247e4f93234SChuck Lever u32 recvd, count; 248e4f93234SChuck Lever __be32 *p; 249e4f93234SChuck Lever 250e4f93234SChuck Lever p = xdr_inline_decode(xdr, 4); 251e4f93234SChuck Lever if (unlikely(p == NULL)) 252e4f93234SChuck Lever goto out_overflow; 253e4f93234SChuck Lever count = be32_to_cpup(p); 254e4f93234SChuck Lever if (unlikely(count >= xdr->buf->page_len || count > NFS3_MAXPATHLEN)) 255e4f93234SChuck Lever goto out_nametoolong; 25664bd577eSTrond Myklebust recvd = xdr_read_pages(xdr, count); 257e4f93234SChuck Lever if (unlikely(count > recvd)) 258e4f93234SChuck Lever goto out_cheating; 259e4f93234SChuck Lever xdr_terminate_string(xdr->buf, count); 260e4f93234SChuck Lever return 0; 261e4f93234SChuck Lever 262e4f93234SChuck Lever out_nametoolong: 263e4f93234SChuck Lever dprintk("NFS: returned pathname too long: %u\n", count); 264e4f93234SChuck Lever return -ENAMETOOLONG; 265e4f93234SChuck Lever out_cheating: 266e4f93234SChuck Lever dprintk("NFS: server cheating in pathname result: " 267e4f93234SChuck Lever "count %u > recvd %u\n", count, recvd); 268e4f93234SChuck Lever return -EIO; 269e4f93234SChuck Lever out_overflow: 270e4f93234SChuck Lever print_overflow_msg(__func__, xdr); 271e4f93234SChuck Lever return -EIO; 272e4f93234SChuck Lever } 273e4f93234SChuck Lever 274d9c407b1SChuck Lever /* 275d9c407b1SChuck Lever * cookie3 276d9c407b1SChuck Lever * 277d9c407b1SChuck Lever * typedef uint64 cookie3 278d9c407b1SChuck Lever */ 279d9c407b1SChuck Lever static __be32 *xdr_encode_cookie3(__be32 *p, u64 cookie) 280d9c407b1SChuck Lever { 281d9c407b1SChuck Lever return xdr_encode_hyper(p, cookie); 282d9c407b1SChuck Lever } 283d9c407b1SChuck Lever 284e4f93234SChuck Lever static int decode_cookie3(struct xdr_stream *xdr, u64 *cookie) 285e4f93234SChuck Lever { 286e4f93234SChuck Lever return decode_uint64(xdr, cookie); 287e4f93234SChuck Lever } 288e4f93234SChuck Lever 289d9c407b1SChuck Lever /* 290d9c407b1SChuck Lever * cookieverf3 291d9c407b1SChuck Lever * 292d9c407b1SChuck Lever * typedef opaque cookieverf3[NFS3_COOKIEVERFSIZE]; 293d9c407b1SChuck Lever */ 294d9c407b1SChuck Lever static __be32 *xdr_encode_cookieverf3(__be32 *p, const __be32 *verifier) 295d9c407b1SChuck Lever { 296d9c407b1SChuck Lever memcpy(p, verifier, NFS3_COOKIEVERFSIZE); 297d9c407b1SChuck Lever return p + XDR_QUADLEN(NFS3_COOKIEVERFSIZE); 298d9c407b1SChuck Lever } 299d9c407b1SChuck Lever 300e4f93234SChuck Lever static int decode_cookieverf3(struct xdr_stream *xdr, __be32 *verifier) 301e4f93234SChuck Lever { 302e4f93234SChuck Lever __be32 *p; 303e4f93234SChuck Lever 304e4f93234SChuck Lever p = xdr_inline_decode(xdr, NFS3_COOKIEVERFSIZE); 305e4f93234SChuck Lever if (unlikely(p == NULL)) 306e4f93234SChuck Lever goto out_overflow; 307e4f93234SChuck Lever memcpy(verifier, p, NFS3_COOKIEVERFSIZE); 308e4f93234SChuck Lever return 0; 309e4f93234SChuck Lever out_overflow: 310e4f93234SChuck Lever print_overflow_msg(__func__, xdr); 311e4f93234SChuck Lever return -EIO; 312e4f93234SChuck Lever } 313e4f93234SChuck Lever 314d9c407b1SChuck Lever /* 315d9c407b1SChuck Lever * createverf3 316d9c407b1SChuck Lever * 317d9c407b1SChuck Lever * typedef opaque createverf3[NFS3_CREATEVERFSIZE]; 318d9c407b1SChuck Lever */ 319d9c407b1SChuck Lever static void encode_createverf3(struct xdr_stream *xdr, const __be32 *verifier) 320d9c407b1SChuck Lever { 321d9c407b1SChuck Lever __be32 *p; 322d9c407b1SChuck Lever 323d9c407b1SChuck Lever p = xdr_reserve_space(xdr, NFS3_CREATEVERFSIZE); 324d9c407b1SChuck Lever memcpy(p, verifier, NFS3_CREATEVERFSIZE); 325d9c407b1SChuck Lever } 326d9c407b1SChuck Lever 3272f2c63bcSTrond Myklebust static int decode_writeverf3(struct xdr_stream *xdr, struct nfs_write_verifier *verifier) 328e4f93234SChuck Lever { 329e4f93234SChuck Lever __be32 *p; 330e4f93234SChuck Lever 331e4f93234SChuck Lever p = xdr_inline_decode(xdr, NFS3_WRITEVERFSIZE); 332e4f93234SChuck Lever if (unlikely(p == NULL)) 333e4f93234SChuck Lever goto out_overflow; 3342f2c63bcSTrond Myklebust memcpy(verifier->data, p, NFS3_WRITEVERFSIZE); 335e4f93234SChuck Lever return 0; 336e4f93234SChuck Lever out_overflow: 337e4f93234SChuck Lever print_overflow_msg(__func__, xdr); 338e4f93234SChuck Lever return -EIO; 339e4f93234SChuck Lever } 340e4f93234SChuck Lever 341e4f93234SChuck Lever /* 342e4f93234SChuck Lever * size3 343e4f93234SChuck Lever * 344e4f93234SChuck Lever * typedef uint64 size3; 345e4f93234SChuck Lever */ 346e4f93234SChuck Lever static __be32 *xdr_decode_size3(__be32 *p, u64 *size) 347e4f93234SChuck Lever { 348e4f93234SChuck Lever return xdr_decode_hyper(p, size); 349e4f93234SChuck Lever } 350e4f93234SChuck Lever 351e4f93234SChuck Lever /* 352e4f93234SChuck Lever * nfsstat3 353e4f93234SChuck Lever * 354e4f93234SChuck Lever * enum nfsstat3 { 355e4f93234SChuck Lever * NFS3_OK = 0, 356e4f93234SChuck Lever * ... 357e4f93234SChuck Lever * } 358e4f93234SChuck Lever */ 359e4f93234SChuck Lever #define NFS3_OK NFS_OK 360e4f93234SChuck Lever 361e4f93234SChuck Lever static int decode_nfsstat3(struct xdr_stream *xdr, enum nfs_stat *status) 362e4f93234SChuck Lever { 363e4f93234SChuck Lever __be32 *p; 364e4f93234SChuck Lever 365e4f93234SChuck Lever p = xdr_inline_decode(xdr, 4); 366e4f93234SChuck Lever if (unlikely(p == NULL)) 367e4f93234SChuck Lever goto out_overflow; 368e4f93234SChuck Lever *status = be32_to_cpup(p); 369e4f93234SChuck Lever return 0; 370e4f93234SChuck Lever out_overflow: 371e4f93234SChuck Lever print_overflow_msg(__func__, xdr); 372e4f93234SChuck Lever return -EIO; 373e4f93234SChuck Lever } 374e4f93234SChuck Lever 375d9c407b1SChuck Lever /* 376d9c407b1SChuck Lever * ftype3 377d9c407b1SChuck Lever * 378d9c407b1SChuck Lever * enum ftype3 { 379d9c407b1SChuck Lever * NF3REG = 1, 380d9c407b1SChuck Lever * NF3DIR = 2, 381d9c407b1SChuck Lever * NF3BLK = 3, 382d9c407b1SChuck Lever * NF3CHR = 4, 383d9c407b1SChuck Lever * NF3LNK = 5, 384d9c407b1SChuck Lever * NF3SOCK = 6, 385d9c407b1SChuck Lever * NF3FIFO = 7 386d9c407b1SChuck Lever * }; 387d9c407b1SChuck Lever */ 388d9c407b1SChuck Lever static void encode_ftype3(struct xdr_stream *xdr, const u32 type) 389d9c407b1SChuck Lever { 390d9c407b1SChuck Lever encode_uint32(xdr, type); 391d9c407b1SChuck Lever } 392d9c407b1SChuck Lever 393f6048709SChuck Lever static __be32 *xdr_decode_ftype3(__be32 *p, umode_t *mode) 394f6048709SChuck Lever { 395f6048709SChuck Lever u32 type; 396f6048709SChuck Lever 397f6048709SChuck Lever type = be32_to_cpup(p++); 398f6048709SChuck Lever if (type > NF3FIFO) 399f6048709SChuck Lever type = NF3NON; 400f6048709SChuck Lever *mode = nfs_type2fmt[type]; 401f6048709SChuck Lever return p; 402f6048709SChuck Lever } 403f6048709SChuck Lever 404d9c407b1SChuck Lever /* 405d9c407b1SChuck Lever * specdata3 406d9c407b1SChuck Lever * 407d9c407b1SChuck Lever * struct specdata3 { 408d9c407b1SChuck Lever * uint32 specdata1; 409d9c407b1SChuck Lever * uint32 specdata2; 410d9c407b1SChuck Lever * }; 411d9c407b1SChuck Lever */ 412d9c407b1SChuck Lever static void encode_specdata3(struct xdr_stream *xdr, const dev_t rdev) 413d9c407b1SChuck Lever { 414d9c407b1SChuck Lever __be32 *p; 415d9c407b1SChuck Lever 416d9c407b1SChuck Lever p = xdr_reserve_space(xdr, 8); 417d9c407b1SChuck Lever *p++ = cpu_to_be32(MAJOR(rdev)); 418d9c407b1SChuck Lever *p = cpu_to_be32(MINOR(rdev)); 419d9c407b1SChuck Lever } 420d9c407b1SChuck Lever 421f6048709SChuck Lever static __be32 *xdr_decode_specdata3(__be32 *p, dev_t *rdev) 422f6048709SChuck Lever { 423f6048709SChuck Lever unsigned int major, minor; 424f6048709SChuck Lever 425f6048709SChuck Lever major = be32_to_cpup(p++); 426f6048709SChuck Lever minor = be32_to_cpup(p++); 427f6048709SChuck Lever *rdev = MKDEV(major, minor); 428f6048709SChuck Lever if (MAJOR(*rdev) != major || MINOR(*rdev) != minor) 429f6048709SChuck Lever *rdev = 0; 430f6048709SChuck Lever return p; 431f6048709SChuck Lever } 432f6048709SChuck Lever 433d9c407b1SChuck Lever /* 434d9c407b1SChuck Lever * nfs_fh3 435d9c407b1SChuck Lever * 436d9c407b1SChuck Lever * struct nfs_fh3 { 437d9c407b1SChuck Lever * opaque data<NFS3_FHSIZE>; 438d9c407b1SChuck Lever * }; 439d9c407b1SChuck Lever */ 440d9c407b1SChuck Lever static void encode_nfs_fh3(struct xdr_stream *xdr, const struct nfs_fh *fh) 441d9c407b1SChuck Lever { 442d9c407b1SChuck Lever __be32 *p; 443d9c407b1SChuck Lever 4447fc38846STrond Myklebust WARN_ON_ONCE(fh->size > NFS3_FHSIZE); 445d9c407b1SChuck Lever p = xdr_reserve_space(xdr, 4 + fh->size); 446d9c407b1SChuck Lever xdr_encode_opaque(p, fh->data, fh->size); 447d9c407b1SChuck Lever } 448d9c407b1SChuck Lever 449e4f93234SChuck Lever static int decode_nfs_fh3(struct xdr_stream *xdr, struct nfs_fh *fh) 450e4f93234SChuck Lever { 451e4f93234SChuck Lever u32 length; 452e4f93234SChuck Lever __be32 *p; 453e4f93234SChuck Lever 454e4f93234SChuck Lever p = xdr_inline_decode(xdr, 4); 455e4f93234SChuck Lever if (unlikely(p == NULL)) 456e4f93234SChuck Lever goto out_overflow; 457e4f93234SChuck Lever length = be32_to_cpup(p++); 458e4f93234SChuck Lever if (unlikely(length > NFS3_FHSIZE)) 459e4f93234SChuck Lever goto out_toobig; 460e4f93234SChuck Lever p = xdr_inline_decode(xdr, length); 461e4f93234SChuck Lever if (unlikely(p == NULL)) 462e4f93234SChuck Lever goto out_overflow; 463e4f93234SChuck Lever fh->size = length; 464e4f93234SChuck Lever memcpy(fh->data, p, length); 465e4f93234SChuck Lever return 0; 466e4f93234SChuck Lever out_toobig: 467e4f93234SChuck Lever dprintk("NFS: file handle size (%u) too big\n", length); 468e4f93234SChuck Lever return -E2BIG; 469e4f93234SChuck Lever out_overflow: 470e4f93234SChuck Lever print_overflow_msg(__func__, xdr); 471e4f93234SChuck Lever return -EIO; 472e4f93234SChuck Lever } 473e4f93234SChuck Lever 474e4f93234SChuck Lever static void zero_nfs_fh3(struct nfs_fh *fh) 475e4f93234SChuck Lever { 476e4f93234SChuck Lever memset(fh, 0, sizeof(*fh)); 477e4f93234SChuck Lever } 478e4f93234SChuck Lever 479d9c407b1SChuck Lever /* 4809d5a6434SChuck Lever * nfstime3 4819d5a6434SChuck Lever * 4829d5a6434SChuck Lever * struct nfstime3 { 4839d5a6434SChuck Lever * uint32 seconds; 4849d5a6434SChuck Lever * uint32 nseconds; 4859d5a6434SChuck Lever * }; 4869d5a6434SChuck Lever */ 4879d5a6434SChuck Lever static __be32 *xdr_encode_nfstime3(__be32 *p, const struct timespec *timep) 4889d5a6434SChuck Lever { 4899d5a6434SChuck Lever *p++ = cpu_to_be32(timep->tv_sec); 4909d5a6434SChuck Lever *p++ = cpu_to_be32(timep->tv_nsec); 4919d5a6434SChuck Lever return p; 4929d5a6434SChuck Lever } 4939d5a6434SChuck Lever 494f6048709SChuck Lever static __be32 *xdr_decode_nfstime3(__be32 *p, struct timespec *timep) 495f6048709SChuck Lever { 496f6048709SChuck Lever timep->tv_sec = be32_to_cpup(p++); 497f6048709SChuck Lever timep->tv_nsec = be32_to_cpup(p++); 498f6048709SChuck Lever return p; 499f6048709SChuck Lever } 500f6048709SChuck Lever 5019d5a6434SChuck Lever /* 502d9c407b1SChuck Lever * sattr3 503d9c407b1SChuck Lever * 504d9c407b1SChuck Lever * enum time_how { 505d9c407b1SChuck Lever * DONT_CHANGE = 0, 506d9c407b1SChuck Lever * SET_TO_SERVER_TIME = 1, 507d9c407b1SChuck Lever * SET_TO_CLIENT_TIME = 2 508d9c407b1SChuck Lever * }; 509d9c407b1SChuck Lever * 510d9c407b1SChuck Lever * union set_mode3 switch (bool set_it) { 511d9c407b1SChuck Lever * case TRUE: 512d9c407b1SChuck Lever * mode3 mode; 513d9c407b1SChuck Lever * default: 514d9c407b1SChuck Lever * void; 515d9c407b1SChuck Lever * }; 516d9c407b1SChuck Lever * 517d9c407b1SChuck Lever * union set_uid3 switch (bool set_it) { 518d9c407b1SChuck Lever * case TRUE: 519d9c407b1SChuck Lever * uid3 uid; 520d9c407b1SChuck Lever * default: 521d9c407b1SChuck Lever * void; 522d9c407b1SChuck Lever * }; 523d9c407b1SChuck Lever * 524d9c407b1SChuck Lever * union set_gid3 switch (bool set_it) { 525d9c407b1SChuck Lever * case TRUE: 526d9c407b1SChuck Lever * gid3 gid; 527d9c407b1SChuck Lever * default: 528d9c407b1SChuck Lever * void; 529d9c407b1SChuck Lever * }; 530d9c407b1SChuck Lever * 531d9c407b1SChuck Lever * union set_size3 switch (bool set_it) { 532d9c407b1SChuck Lever * case TRUE: 533d9c407b1SChuck Lever * size3 size; 534d9c407b1SChuck Lever * default: 535d9c407b1SChuck Lever * void; 536d9c407b1SChuck Lever * }; 537d9c407b1SChuck Lever * 538d9c407b1SChuck Lever * union set_atime switch (time_how set_it) { 539d9c407b1SChuck Lever * case SET_TO_CLIENT_TIME: 540d9c407b1SChuck Lever * nfstime3 atime; 541d9c407b1SChuck Lever * default: 542d9c407b1SChuck Lever * void; 543d9c407b1SChuck Lever * }; 544d9c407b1SChuck Lever * 545d9c407b1SChuck Lever * union set_mtime switch (time_how set_it) { 546d9c407b1SChuck Lever * case SET_TO_CLIENT_TIME: 547d9c407b1SChuck Lever * nfstime3 mtime; 548d9c407b1SChuck Lever * default: 549d9c407b1SChuck Lever * void; 550d9c407b1SChuck Lever * }; 551d9c407b1SChuck Lever * 552d9c407b1SChuck Lever * struct sattr3 { 553d9c407b1SChuck Lever * set_mode3 mode; 554d9c407b1SChuck Lever * set_uid3 uid; 555d9c407b1SChuck Lever * set_gid3 gid; 556d9c407b1SChuck Lever * set_size3 size; 557d9c407b1SChuck Lever * set_atime atime; 558d9c407b1SChuck Lever * set_mtime mtime; 559d9c407b1SChuck Lever * }; 560d9c407b1SChuck Lever */ 561d9c407b1SChuck Lever static void encode_sattr3(struct xdr_stream *xdr, const struct iattr *attr) 562d9c407b1SChuck Lever { 563d9c407b1SChuck Lever u32 nbytes; 564d9c407b1SChuck Lever __be32 *p; 565d9c407b1SChuck Lever 566d9c407b1SChuck Lever /* 567d9c407b1SChuck Lever * In order to make only a single xdr_reserve_space() call, 568d9c407b1SChuck Lever * pre-compute the total number of bytes to be reserved. 569d9c407b1SChuck Lever * Six boolean values, one for each set_foo field, are always 570d9c407b1SChuck Lever * present in the encoded result, so start there. 571d9c407b1SChuck Lever */ 572d9c407b1SChuck Lever nbytes = 6 * 4; 573d9c407b1SChuck Lever if (attr->ia_valid & ATTR_MODE) 574d9c407b1SChuck Lever nbytes += 4; 575d9c407b1SChuck Lever if (attr->ia_valid & ATTR_UID) 576d9c407b1SChuck Lever nbytes += 4; 577d9c407b1SChuck Lever if (attr->ia_valid & ATTR_GID) 578d9c407b1SChuck Lever nbytes += 4; 579d9c407b1SChuck Lever if (attr->ia_valid & ATTR_SIZE) 580d9c407b1SChuck Lever nbytes += 8; 581d9c407b1SChuck Lever if (attr->ia_valid & ATTR_ATIME_SET) 582d9c407b1SChuck Lever nbytes += 8; 583d9c407b1SChuck Lever if (attr->ia_valid & ATTR_MTIME_SET) 584d9c407b1SChuck Lever nbytes += 8; 585d9c407b1SChuck Lever p = xdr_reserve_space(xdr, nbytes); 586d9c407b1SChuck Lever 5879d5a6434SChuck Lever if (attr->ia_valid & ATTR_MODE) { 5889d5a6434SChuck Lever *p++ = xdr_one; 5899d5a6434SChuck Lever *p++ = cpu_to_be32(attr->ia_mode & S_IALLUGO); 5909d5a6434SChuck Lever } else 5919d5a6434SChuck Lever *p++ = xdr_zero; 5929d5a6434SChuck Lever 5939d5a6434SChuck Lever if (attr->ia_valid & ATTR_UID) { 5949d5a6434SChuck Lever *p++ = xdr_one; 5959d5a6434SChuck Lever *p++ = cpu_to_be32(attr->ia_uid); 5969d5a6434SChuck Lever } else 5979d5a6434SChuck Lever *p++ = xdr_zero; 5989d5a6434SChuck Lever 5999d5a6434SChuck Lever if (attr->ia_valid & ATTR_GID) { 6009d5a6434SChuck Lever *p++ = xdr_one; 6019d5a6434SChuck Lever *p++ = cpu_to_be32(attr->ia_gid); 6029d5a6434SChuck Lever } else 6039d5a6434SChuck Lever *p++ = xdr_zero; 6049d5a6434SChuck Lever 6059d5a6434SChuck Lever if (attr->ia_valid & ATTR_SIZE) { 6069d5a6434SChuck Lever *p++ = xdr_one; 6079d5a6434SChuck Lever p = xdr_encode_hyper(p, (u64)attr->ia_size); 6089d5a6434SChuck Lever } else 6099d5a6434SChuck Lever *p++ = xdr_zero; 6109d5a6434SChuck Lever 6119d5a6434SChuck Lever if (attr->ia_valid & ATTR_ATIME_SET) { 6129d5a6434SChuck Lever *p++ = xdr_two; 6139d5a6434SChuck Lever p = xdr_encode_nfstime3(p, &attr->ia_atime); 6149d5a6434SChuck Lever } else if (attr->ia_valid & ATTR_ATIME) { 6159d5a6434SChuck Lever *p++ = xdr_one; 6169d5a6434SChuck Lever } else 6179d5a6434SChuck Lever *p++ = xdr_zero; 6189d5a6434SChuck Lever 6199d5a6434SChuck Lever if (attr->ia_valid & ATTR_MTIME_SET) { 6209d5a6434SChuck Lever *p++ = xdr_two; 6219d5a6434SChuck Lever xdr_encode_nfstime3(p, &attr->ia_mtime); 6229d5a6434SChuck Lever } else if (attr->ia_valid & ATTR_MTIME) { 6239d5a6434SChuck Lever *p = xdr_one; 6249d5a6434SChuck Lever } else 6259d5a6434SChuck Lever *p = xdr_zero; 626d9c407b1SChuck Lever } 627d9c407b1SChuck Lever 628d9c407b1SChuck Lever /* 629e4f93234SChuck Lever * fattr3 630e4f93234SChuck Lever * 631e4f93234SChuck Lever * struct fattr3 { 632e4f93234SChuck Lever * ftype3 type; 633e4f93234SChuck Lever * mode3 mode; 634e4f93234SChuck Lever * uint32 nlink; 635e4f93234SChuck Lever * uid3 uid; 636e4f93234SChuck Lever * gid3 gid; 637e4f93234SChuck Lever * size3 size; 638e4f93234SChuck Lever * size3 used; 639e4f93234SChuck Lever * specdata3 rdev; 640e4f93234SChuck Lever * uint64 fsid; 641e4f93234SChuck Lever * fileid3 fileid; 642e4f93234SChuck Lever * nfstime3 atime; 643e4f93234SChuck Lever * nfstime3 mtime; 644e4f93234SChuck Lever * nfstime3 ctime; 645e4f93234SChuck Lever * }; 646e4f93234SChuck Lever */ 647e4f93234SChuck Lever static int decode_fattr3(struct xdr_stream *xdr, struct nfs_fattr *fattr) 648e4f93234SChuck Lever { 649f6048709SChuck Lever umode_t fmode; 650e4f93234SChuck Lever __be32 *p; 651e4f93234SChuck Lever 652e4f93234SChuck Lever p = xdr_inline_decode(xdr, NFS3_fattr_sz << 2); 653e4f93234SChuck Lever if (unlikely(p == NULL)) 654e4f93234SChuck Lever goto out_overflow; 655f6048709SChuck Lever 656f6048709SChuck Lever p = xdr_decode_ftype3(p, &fmode); 657f6048709SChuck Lever 658f6048709SChuck Lever fattr->mode = (be32_to_cpup(p++) & ~S_IFMT) | fmode; 659f6048709SChuck Lever fattr->nlink = be32_to_cpup(p++); 660f6048709SChuck Lever fattr->uid = be32_to_cpup(p++); 661f6048709SChuck Lever fattr->gid = be32_to_cpup(p++); 662f6048709SChuck Lever 663f6048709SChuck Lever p = xdr_decode_size3(p, &fattr->size); 664f6048709SChuck Lever p = xdr_decode_size3(p, &fattr->du.nfs3.used); 665f6048709SChuck Lever p = xdr_decode_specdata3(p, &fattr->rdev); 666f6048709SChuck Lever 667f6048709SChuck Lever p = xdr_decode_hyper(p, &fattr->fsid.major); 668f6048709SChuck Lever fattr->fsid.minor = 0; 669f6048709SChuck Lever 670f6048709SChuck Lever p = xdr_decode_fileid3(p, &fattr->fileid); 671f6048709SChuck Lever p = xdr_decode_nfstime3(p, &fattr->atime); 672f6048709SChuck Lever p = xdr_decode_nfstime3(p, &fattr->mtime); 673f6048709SChuck Lever xdr_decode_nfstime3(p, &fattr->ctime); 6743a1556e8STrond Myklebust fattr->change_attr = nfs_timespec_to_change_attr(&fattr->ctime); 675f6048709SChuck Lever 676f6048709SChuck Lever fattr->valid |= NFS_ATTR_FATTR_V3; 677e4f93234SChuck Lever return 0; 678e4f93234SChuck Lever out_overflow: 679e4f93234SChuck Lever print_overflow_msg(__func__, xdr); 680e4f93234SChuck Lever return -EIO; 681e4f93234SChuck Lever } 682e4f93234SChuck Lever 683e4f93234SChuck Lever /* 684e4f93234SChuck Lever * post_op_attr 685e4f93234SChuck Lever * 686e4f93234SChuck Lever * union post_op_attr switch (bool attributes_follow) { 687e4f93234SChuck Lever * case TRUE: 688e4f93234SChuck Lever * fattr3 attributes; 689e4f93234SChuck Lever * case FALSE: 690e4f93234SChuck Lever * void; 691e4f93234SChuck Lever * }; 692e4f93234SChuck Lever */ 693e4f93234SChuck Lever static int decode_post_op_attr(struct xdr_stream *xdr, struct nfs_fattr *fattr) 694e4f93234SChuck Lever { 695e4f93234SChuck Lever __be32 *p; 696e4f93234SChuck Lever 697e4f93234SChuck Lever p = xdr_inline_decode(xdr, 4); 698e4f93234SChuck Lever if (unlikely(p == NULL)) 699e4f93234SChuck Lever goto out_overflow; 700e4f93234SChuck Lever if (*p != xdr_zero) 701e4f93234SChuck Lever return decode_fattr3(xdr, fattr); 702e4f93234SChuck Lever return 0; 703e4f93234SChuck Lever out_overflow: 704e4f93234SChuck Lever print_overflow_msg(__func__, xdr); 705e4f93234SChuck Lever return -EIO; 706e4f93234SChuck Lever } 707e4f93234SChuck Lever 708e4f93234SChuck Lever /* 709e4f93234SChuck Lever * wcc_attr 710e4f93234SChuck Lever * struct wcc_attr { 711e4f93234SChuck Lever * size3 size; 712e4f93234SChuck Lever * nfstime3 mtime; 713e4f93234SChuck Lever * nfstime3 ctime; 714e4f93234SChuck Lever * }; 715e4f93234SChuck Lever */ 716e4f93234SChuck Lever static int decode_wcc_attr(struct xdr_stream *xdr, struct nfs_fattr *fattr) 717e4f93234SChuck Lever { 718e4f93234SChuck Lever __be32 *p; 719e4f93234SChuck Lever 720e4f93234SChuck Lever p = xdr_inline_decode(xdr, NFS3_wcc_attr_sz << 2); 721e4f93234SChuck Lever if (unlikely(p == NULL)) 722e4f93234SChuck Lever goto out_overflow; 723f6048709SChuck Lever 724f6048709SChuck Lever fattr->valid |= NFS_ATTR_FATTR_PRESIZE 7253a1556e8STrond Myklebust | NFS_ATTR_FATTR_PRECHANGE 726f6048709SChuck Lever | NFS_ATTR_FATTR_PREMTIME 727f6048709SChuck Lever | NFS_ATTR_FATTR_PRECTIME; 728f6048709SChuck Lever 729f6048709SChuck Lever p = xdr_decode_size3(p, &fattr->pre_size); 730f6048709SChuck Lever p = xdr_decode_nfstime3(p, &fattr->pre_mtime); 731f6048709SChuck Lever xdr_decode_nfstime3(p, &fattr->pre_ctime); 7323a1556e8STrond Myklebust fattr->pre_change_attr = nfs_timespec_to_change_attr(&fattr->pre_ctime); 733f6048709SChuck Lever 734e4f93234SChuck Lever return 0; 735e4f93234SChuck Lever out_overflow: 736e4f93234SChuck Lever print_overflow_msg(__func__, xdr); 737e4f93234SChuck Lever return -EIO; 738e4f93234SChuck Lever } 739e4f93234SChuck Lever 740e4f93234SChuck Lever /* 741e4f93234SChuck Lever * pre_op_attr 742e4f93234SChuck Lever * union pre_op_attr switch (bool attributes_follow) { 743e4f93234SChuck Lever * case TRUE: 744e4f93234SChuck Lever * wcc_attr attributes; 745e4f93234SChuck Lever * case FALSE: 746e4f93234SChuck Lever * void; 747e4f93234SChuck Lever * }; 748e4f93234SChuck Lever * 749e4f93234SChuck Lever * wcc_data 750e4f93234SChuck Lever * 751e4f93234SChuck Lever * struct wcc_data { 752e4f93234SChuck Lever * pre_op_attr before; 753e4f93234SChuck Lever * post_op_attr after; 754e4f93234SChuck Lever * }; 755e4f93234SChuck Lever */ 756e4f93234SChuck Lever static int decode_pre_op_attr(struct xdr_stream *xdr, struct nfs_fattr *fattr) 757e4f93234SChuck Lever { 758e4f93234SChuck Lever __be32 *p; 759e4f93234SChuck Lever 760e4f93234SChuck Lever p = xdr_inline_decode(xdr, 4); 761e4f93234SChuck Lever if (unlikely(p == NULL)) 762e4f93234SChuck Lever goto out_overflow; 763e4f93234SChuck Lever if (*p != xdr_zero) 764e4f93234SChuck Lever return decode_wcc_attr(xdr, fattr); 765e4f93234SChuck Lever return 0; 766e4f93234SChuck Lever out_overflow: 767e4f93234SChuck Lever print_overflow_msg(__func__, xdr); 768e4f93234SChuck Lever return -EIO; 769e4f93234SChuck Lever } 770e4f93234SChuck Lever 771e4f93234SChuck Lever static int decode_wcc_data(struct xdr_stream *xdr, struct nfs_fattr *fattr) 772e4f93234SChuck Lever { 773e4f93234SChuck Lever int error; 774e4f93234SChuck Lever 775e4f93234SChuck Lever error = decode_pre_op_attr(xdr, fattr); 776e4f93234SChuck Lever if (unlikely(error)) 777e4f93234SChuck Lever goto out; 778e4f93234SChuck Lever error = decode_post_op_attr(xdr, fattr); 779e4f93234SChuck Lever out: 780e4f93234SChuck Lever return error; 781e4f93234SChuck Lever } 782e4f93234SChuck Lever 783e4f93234SChuck Lever /* 784e4f93234SChuck Lever * post_op_fh3 785e4f93234SChuck Lever * 786e4f93234SChuck Lever * union post_op_fh3 switch (bool handle_follows) { 787e4f93234SChuck Lever * case TRUE: 788e4f93234SChuck Lever * nfs_fh3 handle; 789e4f93234SChuck Lever * case FALSE: 790e4f93234SChuck Lever * void; 791e4f93234SChuck Lever * }; 792e4f93234SChuck Lever */ 793e4f93234SChuck Lever static int decode_post_op_fh3(struct xdr_stream *xdr, struct nfs_fh *fh) 794e4f93234SChuck Lever { 795e4f93234SChuck Lever __be32 *p = xdr_inline_decode(xdr, 4); 796e4f93234SChuck Lever if (unlikely(p == NULL)) 797e4f93234SChuck Lever goto out_overflow; 798e4f93234SChuck Lever if (*p != xdr_zero) 799e4f93234SChuck Lever return decode_nfs_fh3(xdr, fh); 800e4f93234SChuck Lever zero_nfs_fh3(fh); 801e4f93234SChuck Lever return 0; 802e4f93234SChuck Lever out_overflow: 803e4f93234SChuck Lever print_overflow_msg(__func__, xdr); 804e4f93234SChuck Lever return -EIO; 805e4f93234SChuck Lever } 806e4f93234SChuck Lever 807e4f93234SChuck Lever /* 808d9c407b1SChuck Lever * diropargs3 809d9c407b1SChuck Lever * 810d9c407b1SChuck Lever * struct diropargs3 { 811d9c407b1SChuck Lever * nfs_fh3 dir; 812d9c407b1SChuck Lever * filename3 name; 813d9c407b1SChuck Lever * }; 814d9c407b1SChuck Lever */ 815d9c407b1SChuck Lever static void encode_diropargs3(struct xdr_stream *xdr, const struct nfs_fh *fh, 816d9c407b1SChuck Lever const char *name, u32 length) 817d9c407b1SChuck Lever { 818d9c407b1SChuck Lever encode_nfs_fh3(xdr, fh); 819d9c407b1SChuck Lever encode_filename3(xdr, name, length); 820d9c407b1SChuck Lever } 821d9c407b1SChuck Lever 822d9c407b1SChuck Lever 8231da177e4SLinus Torvalds /* 824499ff710SChuck Lever * NFSv3 XDR encode functions 825499ff710SChuck Lever * 826499ff710SChuck Lever * NFSv3 argument types are defined in section 3.3 of RFC 1813: 827499ff710SChuck Lever * "NFS Version 3 Protocol Specification". 8281da177e4SLinus Torvalds */ 8291da177e4SLinus Torvalds 8301da177e4SLinus Torvalds /* 831d9c407b1SChuck Lever * 3.3.1 GETATTR3args 832d9c407b1SChuck Lever * 833d9c407b1SChuck Lever * struct GETATTR3args { 834d9c407b1SChuck Lever * nfs_fh3 object; 835d9c407b1SChuck Lever * }; 836d9c407b1SChuck Lever */ 8379f06c719SChuck Lever static void nfs3_xdr_enc_getattr3args(struct rpc_rqst *req, 8389f06c719SChuck Lever struct xdr_stream *xdr, 839d9c407b1SChuck Lever const struct nfs_fh *fh) 840d9c407b1SChuck Lever { 8419f06c719SChuck Lever encode_nfs_fh3(xdr, fh); 842d9c407b1SChuck Lever } 843d9c407b1SChuck Lever 844d9c407b1SChuck Lever /* 845d9c407b1SChuck Lever * 3.3.2 SETATTR3args 846d9c407b1SChuck Lever * 847d9c407b1SChuck Lever * union sattrguard3 switch (bool check) { 848d9c407b1SChuck Lever * case TRUE: 849d9c407b1SChuck Lever * nfstime3 obj_ctime; 850d9c407b1SChuck Lever * case FALSE: 851d9c407b1SChuck Lever * void; 852d9c407b1SChuck Lever * }; 853d9c407b1SChuck Lever * 854d9c407b1SChuck Lever * struct SETATTR3args { 855d9c407b1SChuck Lever * nfs_fh3 object; 856d9c407b1SChuck Lever * sattr3 new_attributes; 857d9c407b1SChuck Lever * sattrguard3 guard; 858d9c407b1SChuck Lever * }; 859d9c407b1SChuck Lever */ 860d9c407b1SChuck Lever static void encode_sattrguard3(struct xdr_stream *xdr, 861d9c407b1SChuck Lever const struct nfs3_sattrargs *args) 862d9c407b1SChuck Lever { 863d9c407b1SChuck Lever __be32 *p; 864d9c407b1SChuck Lever 865d9c407b1SChuck Lever if (args->guard) { 866d9c407b1SChuck Lever p = xdr_reserve_space(xdr, 4 + 8); 867d9c407b1SChuck Lever *p++ = xdr_one; 8689d5a6434SChuck Lever xdr_encode_nfstime3(p, &args->guardtime); 869d9c407b1SChuck Lever } else { 870d9c407b1SChuck Lever p = xdr_reserve_space(xdr, 4); 871d9c407b1SChuck Lever *p = xdr_zero; 872d9c407b1SChuck Lever } 873d9c407b1SChuck Lever } 874d9c407b1SChuck Lever 8759f06c719SChuck Lever static void nfs3_xdr_enc_setattr3args(struct rpc_rqst *req, 8769f06c719SChuck Lever struct xdr_stream *xdr, 877d9c407b1SChuck Lever const struct nfs3_sattrargs *args) 878d9c407b1SChuck Lever { 8799f06c719SChuck Lever encode_nfs_fh3(xdr, args->fh); 8809f06c719SChuck Lever encode_sattr3(xdr, args->sattr); 8819f06c719SChuck Lever encode_sattrguard3(xdr, args); 882d9c407b1SChuck Lever } 883d9c407b1SChuck Lever 884d9c407b1SChuck Lever /* 885d9c407b1SChuck Lever * 3.3.3 LOOKUP3args 886d9c407b1SChuck Lever * 887d9c407b1SChuck Lever * struct LOOKUP3args { 888d9c407b1SChuck Lever * diropargs3 what; 889d9c407b1SChuck Lever * }; 890d9c407b1SChuck Lever */ 8919f06c719SChuck Lever static void nfs3_xdr_enc_lookup3args(struct rpc_rqst *req, 8929f06c719SChuck Lever struct xdr_stream *xdr, 893d9c407b1SChuck Lever const struct nfs3_diropargs *args) 894d9c407b1SChuck Lever { 8959f06c719SChuck Lever encode_diropargs3(xdr, args->fh, args->name, args->len); 896d9c407b1SChuck Lever } 897d9c407b1SChuck Lever 898d9c407b1SChuck Lever /* 899d9c407b1SChuck Lever * 3.3.4 ACCESS3args 900d9c407b1SChuck Lever * 901d9c407b1SChuck Lever * struct ACCESS3args { 902d9c407b1SChuck Lever * nfs_fh3 object; 903d9c407b1SChuck Lever * uint32 access; 904d9c407b1SChuck Lever * }; 905d9c407b1SChuck Lever */ 906d9c407b1SChuck Lever static void encode_access3args(struct xdr_stream *xdr, 907d9c407b1SChuck Lever const struct nfs3_accessargs *args) 908d9c407b1SChuck Lever { 909d9c407b1SChuck Lever encode_nfs_fh3(xdr, args->fh); 910d9c407b1SChuck Lever encode_uint32(xdr, args->access); 911d9c407b1SChuck Lever } 912d9c407b1SChuck Lever 9139f06c719SChuck Lever static void nfs3_xdr_enc_access3args(struct rpc_rqst *req, 9149f06c719SChuck Lever struct xdr_stream *xdr, 915d9c407b1SChuck Lever const struct nfs3_accessargs *args) 916d9c407b1SChuck Lever { 9179f06c719SChuck Lever encode_access3args(xdr, args); 918d9c407b1SChuck Lever } 919d9c407b1SChuck Lever 920d9c407b1SChuck Lever /* 921d9c407b1SChuck Lever * 3.3.5 READLINK3args 922d9c407b1SChuck Lever * 923d9c407b1SChuck Lever * struct READLINK3args { 924d9c407b1SChuck Lever * nfs_fh3 symlink; 925d9c407b1SChuck Lever * }; 926d9c407b1SChuck Lever */ 9279f06c719SChuck Lever static void nfs3_xdr_enc_readlink3args(struct rpc_rqst *req, 9289f06c719SChuck Lever struct xdr_stream *xdr, 929d9c407b1SChuck Lever const struct nfs3_readlinkargs *args) 930d9c407b1SChuck Lever { 9319f06c719SChuck Lever encode_nfs_fh3(xdr, args->fh); 932d9c407b1SChuck Lever prepare_reply_buffer(req, args->pages, args->pgbase, 933d9c407b1SChuck Lever args->pglen, NFS3_readlinkres_sz); 934d9c407b1SChuck Lever } 935d9c407b1SChuck Lever 936d9c407b1SChuck Lever /* 937d9c407b1SChuck Lever * 3.3.6 READ3args 938d9c407b1SChuck Lever * 939d9c407b1SChuck Lever * struct READ3args { 940d9c407b1SChuck Lever * nfs_fh3 file; 941d9c407b1SChuck Lever * offset3 offset; 942d9c407b1SChuck Lever * count3 count; 943d9c407b1SChuck Lever * }; 944d9c407b1SChuck Lever */ 945d9c407b1SChuck Lever static void encode_read3args(struct xdr_stream *xdr, 946d9c407b1SChuck Lever const struct nfs_readargs *args) 947d9c407b1SChuck Lever { 948d9c407b1SChuck Lever __be32 *p; 949d9c407b1SChuck Lever 950d9c407b1SChuck Lever encode_nfs_fh3(xdr, args->fh); 951d9c407b1SChuck Lever 952d9c407b1SChuck Lever p = xdr_reserve_space(xdr, 8 + 4); 953d9c407b1SChuck Lever p = xdr_encode_hyper(p, args->offset); 954d9c407b1SChuck Lever *p = cpu_to_be32(args->count); 955d9c407b1SChuck Lever } 956d9c407b1SChuck Lever 9579f06c719SChuck Lever static void nfs3_xdr_enc_read3args(struct rpc_rqst *req, 9589f06c719SChuck Lever struct xdr_stream *xdr, 959d9c407b1SChuck Lever const struct nfs_readargs *args) 960d9c407b1SChuck Lever { 9619f06c719SChuck Lever encode_read3args(xdr, args); 962d9c407b1SChuck Lever prepare_reply_buffer(req, args->pages, args->pgbase, 963d9c407b1SChuck Lever args->count, NFS3_readres_sz); 964d9c407b1SChuck Lever req->rq_rcv_buf.flags |= XDRBUF_READ; 965d9c407b1SChuck Lever } 966d9c407b1SChuck Lever 967d9c407b1SChuck Lever /* 968d9c407b1SChuck Lever * 3.3.7 WRITE3args 969d9c407b1SChuck Lever * 970d9c407b1SChuck Lever * enum stable_how { 971d9c407b1SChuck Lever * UNSTABLE = 0, 972d9c407b1SChuck Lever * DATA_SYNC = 1, 973d9c407b1SChuck Lever * FILE_SYNC = 2 974d9c407b1SChuck Lever * }; 975d9c407b1SChuck Lever * 976d9c407b1SChuck Lever * struct WRITE3args { 977d9c407b1SChuck Lever * nfs_fh3 file; 978d9c407b1SChuck Lever * offset3 offset; 979d9c407b1SChuck Lever * count3 count; 980d9c407b1SChuck Lever * stable_how stable; 981d9c407b1SChuck Lever * opaque data<>; 982d9c407b1SChuck Lever * }; 983d9c407b1SChuck Lever */ 984d9c407b1SChuck Lever static void encode_write3args(struct xdr_stream *xdr, 985d9c407b1SChuck Lever const struct nfs_writeargs *args) 986d9c407b1SChuck Lever { 987d9c407b1SChuck Lever __be32 *p; 988d9c407b1SChuck Lever 989d9c407b1SChuck Lever encode_nfs_fh3(xdr, args->fh); 990d9c407b1SChuck Lever 991d9c407b1SChuck Lever p = xdr_reserve_space(xdr, 8 + 4 + 4 + 4); 992d9c407b1SChuck Lever p = xdr_encode_hyper(p, args->offset); 993d9c407b1SChuck Lever *p++ = cpu_to_be32(args->count); 994d9c407b1SChuck Lever *p++ = cpu_to_be32(args->stable); 995d9c407b1SChuck Lever *p = cpu_to_be32(args->count); 996d9c407b1SChuck Lever xdr_write_pages(xdr, args->pages, args->pgbase, args->count); 997d9c407b1SChuck Lever } 998d9c407b1SChuck Lever 9999f06c719SChuck Lever static void nfs3_xdr_enc_write3args(struct rpc_rqst *req, 10009f06c719SChuck Lever struct xdr_stream *xdr, 1001d9c407b1SChuck Lever const struct nfs_writeargs *args) 1002d9c407b1SChuck Lever { 10039f06c719SChuck Lever encode_write3args(xdr, args); 10049f06c719SChuck Lever xdr->buf->flags |= XDRBUF_WRITE; 1005d9c407b1SChuck Lever } 1006d9c407b1SChuck Lever 1007d9c407b1SChuck Lever /* 1008d9c407b1SChuck Lever * 3.3.8 CREATE3args 1009d9c407b1SChuck Lever * 1010d9c407b1SChuck Lever * enum createmode3 { 1011d9c407b1SChuck Lever * UNCHECKED = 0, 1012d9c407b1SChuck Lever * GUARDED = 1, 1013d9c407b1SChuck Lever * EXCLUSIVE = 2 1014d9c407b1SChuck Lever * }; 1015d9c407b1SChuck Lever * 1016d9c407b1SChuck Lever * union createhow3 switch (createmode3 mode) { 1017d9c407b1SChuck Lever * case UNCHECKED: 1018d9c407b1SChuck Lever * case GUARDED: 1019d9c407b1SChuck Lever * sattr3 obj_attributes; 1020d9c407b1SChuck Lever * case EXCLUSIVE: 1021d9c407b1SChuck Lever * createverf3 verf; 1022d9c407b1SChuck Lever * }; 1023d9c407b1SChuck Lever * 1024d9c407b1SChuck Lever * struct CREATE3args { 1025d9c407b1SChuck Lever * diropargs3 where; 1026d9c407b1SChuck Lever * createhow3 how; 1027d9c407b1SChuck Lever * }; 1028d9c407b1SChuck Lever */ 1029d9c407b1SChuck Lever static void encode_createhow3(struct xdr_stream *xdr, 1030d9c407b1SChuck Lever const struct nfs3_createargs *args) 1031d9c407b1SChuck Lever { 1032d9c407b1SChuck Lever encode_uint32(xdr, args->createmode); 1033d9c407b1SChuck Lever switch (args->createmode) { 1034d9c407b1SChuck Lever case NFS3_CREATE_UNCHECKED: 1035d9c407b1SChuck Lever case NFS3_CREATE_GUARDED: 1036d9c407b1SChuck Lever encode_sattr3(xdr, args->sattr); 1037d9c407b1SChuck Lever break; 1038d9c407b1SChuck Lever case NFS3_CREATE_EXCLUSIVE: 1039d9c407b1SChuck Lever encode_createverf3(xdr, args->verifier); 1040d9c407b1SChuck Lever break; 1041d9c407b1SChuck Lever default: 1042d9c407b1SChuck Lever BUG(); 1043d9c407b1SChuck Lever } 1044d9c407b1SChuck Lever } 1045d9c407b1SChuck Lever 10469f06c719SChuck Lever static void nfs3_xdr_enc_create3args(struct rpc_rqst *req, 10479f06c719SChuck Lever struct xdr_stream *xdr, 1048d9c407b1SChuck Lever const struct nfs3_createargs *args) 1049d9c407b1SChuck Lever { 10509f06c719SChuck Lever encode_diropargs3(xdr, args->fh, args->name, args->len); 10519f06c719SChuck Lever encode_createhow3(xdr, args); 1052d9c407b1SChuck Lever } 1053d9c407b1SChuck Lever 1054d9c407b1SChuck Lever /* 1055d9c407b1SChuck Lever * 3.3.9 MKDIR3args 1056d9c407b1SChuck Lever * 1057d9c407b1SChuck Lever * struct MKDIR3args { 1058d9c407b1SChuck Lever * diropargs3 where; 1059d9c407b1SChuck Lever * sattr3 attributes; 1060d9c407b1SChuck Lever * }; 1061d9c407b1SChuck Lever */ 10629f06c719SChuck Lever static void nfs3_xdr_enc_mkdir3args(struct rpc_rqst *req, 10639f06c719SChuck Lever struct xdr_stream *xdr, 1064d9c407b1SChuck Lever const struct nfs3_mkdirargs *args) 1065d9c407b1SChuck Lever { 10669f06c719SChuck Lever encode_diropargs3(xdr, args->fh, args->name, args->len); 10679f06c719SChuck Lever encode_sattr3(xdr, args->sattr); 1068d9c407b1SChuck Lever } 1069d9c407b1SChuck Lever 1070d9c407b1SChuck Lever /* 1071d9c407b1SChuck Lever * 3.3.10 SYMLINK3args 1072d9c407b1SChuck Lever * 1073d9c407b1SChuck Lever * struct symlinkdata3 { 1074d9c407b1SChuck Lever * sattr3 symlink_attributes; 1075d9c407b1SChuck Lever * nfspath3 symlink_data; 1076d9c407b1SChuck Lever * }; 1077d9c407b1SChuck Lever * 1078d9c407b1SChuck Lever * struct SYMLINK3args { 1079d9c407b1SChuck Lever * diropargs3 where; 1080d9c407b1SChuck Lever * symlinkdata3 symlink; 1081d9c407b1SChuck Lever * }; 1082d9c407b1SChuck Lever */ 1083d9c407b1SChuck Lever static void encode_symlinkdata3(struct xdr_stream *xdr, 1084d9c407b1SChuck Lever const struct nfs3_symlinkargs *args) 1085d9c407b1SChuck Lever { 1086d9c407b1SChuck Lever encode_sattr3(xdr, args->sattr); 1087d9c407b1SChuck Lever encode_nfspath3(xdr, args->pages, args->pathlen); 1088d9c407b1SChuck Lever } 1089d9c407b1SChuck Lever 10909f06c719SChuck Lever static void nfs3_xdr_enc_symlink3args(struct rpc_rqst *req, 10919f06c719SChuck Lever struct xdr_stream *xdr, 1092d9c407b1SChuck Lever const struct nfs3_symlinkargs *args) 1093d9c407b1SChuck Lever { 10949f06c719SChuck Lever encode_diropargs3(xdr, args->fromfh, args->fromname, args->fromlen); 10959f06c719SChuck Lever encode_symlinkdata3(xdr, args); 1096d9c407b1SChuck Lever } 1097d9c407b1SChuck Lever 1098d9c407b1SChuck Lever /* 1099d9c407b1SChuck Lever * 3.3.11 MKNOD3args 1100d9c407b1SChuck Lever * 1101d9c407b1SChuck Lever * struct devicedata3 { 1102d9c407b1SChuck Lever * sattr3 dev_attributes; 1103d9c407b1SChuck Lever * specdata3 spec; 1104d9c407b1SChuck Lever * }; 1105d9c407b1SChuck Lever * 1106d9c407b1SChuck Lever * union mknoddata3 switch (ftype3 type) { 1107d9c407b1SChuck Lever * case NF3CHR: 1108d9c407b1SChuck Lever * case NF3BLK: 1109d9c407b1SChuck Lever * devicedata3 device; 1110d9c407b1SChuck Lever * case NF3SOCK: 1111d9c407b1SChuck Lever * case NF3FIFO: 1112d9c407b1SChuck Lever * sattr3 pipe_attributes; 1113d9c407b1SChuck Lever * default: 1114d9c407b1SChuck Lever * void; 1115d9c407b1SChuck Lever * }; 1116d9c407b1SChuck Lever * 1117d9c407b1SChuck Lever * struct MKNOD3args { 1118d9c407b1SChuck Lever * diropargs3 where; 1119d9c407b1SChuck Lever * mknoddata3 what; 1120d9c407b1SChuck Lever * }; 1121d9c407b1SChuck Lever */ 1122d9c407b1SChuck Lever static void encode_devicedata3(struct xdr_stream *xdr, 1123d9c407b1SChuck Lever const struct nfs3_mknodargs *args) 1124d9c407b1SChuck Lever { 1125d9c407b1SChuck Lever encode_sattr3(xdr, args->sattr); 1126d9c407b1SChuck Lever encode_specdata3(xdr, args->rdev); 1127d9c407b1SChuck Lever } 1128d9c407b1SChuck Lever 1129d9c407b1SChuck Lever static void encode_mknoddata3(struct xdr_stream *xdr, 1130d9c407b1SChuck Lever const struct nfs3_mknodargs *args) 1131d9c407b1SChuck Lever { 1132d9c407b1SChuck Lever encode_ftype3(xdr, args->type); 1133d9c407b1SChuck Lever switch (args->type) { 1134d9c407b1SChuck Lever case NF3CHR: 1135d9c407b1SChuck Lever case NF3BLK: 1136d9c407b1SChuck Lever encode_devicedata3(xdr, args); 1137d9c407b1SChuck Lever break; 1138d9c407b1SChuck Lever case NF3SOCK: 1139d9c407b1SChuck Lever case NF3FIFO: 1140d9c407b1SChuck Lever encode_sattr3(xdr, args->sattr); 1141d9c407b1SChuck Lever break; 1142d9c407b1SChuck Lever case NF3REG: 1143d9c407b1SChuck Lever case NF3DIR: 1144d9c407b1SChuck Lever break; 1145d9c407b1SChuck Lever default: 1146d9c407b1SChuck Lever BUG(); 1147d9c407b1SChuck Lever } 1148d9c407b1SChuck Lever } 1149d9c407b1SChuck Lever 11509f06c719SChuck Lever static void nfs3_xdr_enc_mknod3args(struct rpc_rqst *req, 11519f06c719SChuck Lever struct xdr_stream *xdr, 1152d9c407b1SChuck Lever const struct nfs3_mknodargs *args) 1153d9c407b1SChuck Lever { 11549f06c719SChuck Lever encode_diropargs3(xdr, args->fh, args->name, args->len); 11559f06c719SChuck Lever encode_mknoddata3(xdr, args); 1156d9c407b1SChuck Lever } 1157d9c407b1SChuck Lever 1158d9c407b1SChuck Lever /* 1159d9c407b1SChuck Lever * 3.3.12 REMOVE3args 1160d9c407b1SChuck Lever * 1161d9c407b1SChuck Lever * struct REMOVE3args { 1162d9c407b1SChuck Lever * diropargs3 object; 1163d9c407b1SChuck Lever * }; 1164d9c407b1SChuck Lever */ 11659f06c719SChuck Lever static void nfs3_xdr_enc_remove3args(struct rpc_rqst *req, 11669f06c719SChuck Lever struct xdr_stream *xdr, 1167d9c407b1SChuck Lever const struct nfs_removeargs *args) 1168d9c407b1SChuck Lever { 11699f06c719SChuck Lever encode_diropargs3(xdr, args->fh, args->name.name, args->name.len); 1170d9c407b1SChuck Lever } 1171d9c407b1SChuck Lever 1172d9c407b1SChuck Lever /* 1173d9c407b1SChuck Lever * 3.3.14 RENAME3args 1174d9c407b1SChuck Lever * 1175d9c407b1SChuck Lever * struct RENAME3args { 1176d9c407b1SChuck Lever * diropargs3 from; 1177d9c407b1SChuck Lever * diropargs3 to; 1178d9c407b1SChuck Lever * }; 1179d9c407b1SChuck Lever */ 11809f06c719SChuck Lever static void nfs3_xdr_enc_rename3args(struct rpc_rqst *req, 11819f06c719SChuck Lever struct xdr_stream *xdr, 1182d9c407b1SChuck Lever const struct nfs_renameargs *args) 1183d9c407b1SChuck Lever { 1184d9c407b1SChuck Lever const struct qstr *old = args->old_name; 1185d9c407b1SChuck Lever const struct qstr *new = args->new_name; 1186d9c407b1SChuck Lever 11879f06c719SChuck Lever encode_diropargs3(xdr, args->old_dir, old->name, old->len); 11889f06c719SChuck Lever encode_diropargs3(xdr, args->new_dir, new->name, new->len); 1189d9c407b1SChuck Lever } 1190d9c407b1SChuck Lever 1191d9c407b1SChuck Lever /* 1192d9c407b1SChuck Lever * 3.3.15 LINK3args 1193d9c407b1SChuck Lever * 1194d9c407b1SChuck Lever * struct LINK3args { 1195d9c407b1SChuck Lever * nfs_fh3 file; 1196d9c407b1SChuck Lever * diropargs3 link; 1197d9c407b1SChuck Lever * }; 1198d9c407b1SChuck Lever */ 11999f06c719SChuck Lever static void nfs3_xdr_enc_link3args(struct rpc_rqst *req, 12009f06c719SChuck Lever struct xdr_stream *xdr, 1201d9c407b1SChuck Lever const struct nfs3_linkargs *args) 1202d9c407b1SChuck Lever { 12039f06c719SChuck Lever encode_nfs_fh3(xdr, args->fromfh); 12049f06c719SChuck Lever encode_diropargs3(xdr, args->tofh, args->toname, args->tolen); 1205d9c407b1SChuck Lever } 1206d9c407b1SChuck Lever 1207d9c407b1SChuck Lever /* 1208d9c407b1SChuck Lever * 3.3.16 READDIR3args 1209d9c407b1SChuck Lever * 1210d9c407b1SChuck Lever * struct READDIR3args { 1211d9c407b1SChuck Lever * nfs_fh3 dir; 1212d9c407b1SChuck Lever * cookie3 cookie; 1213d9c407b1SChuck Lever * cookieverf3 cookieverf; 1214d9c407b1SChuck Lever * count3 count; 1215d9c407b1SChuck Lever * }; 1216d9c407b1SChuck Lever */ 1217d9c407b1SChuck Lever static void encode_readdir3args(struct xdr_stream *xdr, 1218d9c407b1SChuck Lever const struct nfs3_readdirargs *args) 1219d9c407b1SChuck Lever { 1220d9c407b1SChuck Lever __be32 *p; 1221d9c407b1SChuck Lever 1222d9c407b1SChuck Lever encode_nfs_fh3(xdr, args->fh); 1223d9c407b1SChuck Lever 1224d9c407b1SChuck Lever p = xdr_reserve_space(xdr, 8 + NFS3_COOKIEVERFSIZE + 4); 1225d9c407b1SChuck Lever p = xdr_encode_cookie3(p, args->cookie); 1226d9c407b1SChuck Lever p = xdr_encode_cookieverf3(p, args->verf); 1227d9c407b1SChuck Lever *p = cpu_to_be32(args->count); 1228d9c407b1SChuck Lever } 1229d9c407b1SChuck Lever 12309f06c719SChuck Lever static void nfs3_xdr_enc_readdir3args(struct rpc_rqst *req, 12319f06c719SChuck Lever struct xdr_stream *xdr, 1232d9c407b1SChuck Lever const struct nfs3_readdirargs *args) 1233d9c407b1SChuck Lever { 12349f06c719SChuck Lever encode_readdir3args(xdr, args); 1235d9c407b1SChuck Lever prepare_reply_buffer(req, args->pages, 0, 1236d9c407b1SChuck Lever args->count, NFS3_readdirres_sz); 1237d9c407b1SChuck Lever } 1238d9c407b1SChuck Lever 1239d9c407b1SChuck Lever /* 1240d9c407b1SChuck Lever * 3.3.17 READDIRPLUS3args 1241d9c407b1SChuck Lever * 1242d9c407b1SChuck Lever * struct READDIRPLUS3args { 1243d9c407b1SChuck Lever * nfs_fh3 dir; 1244d9c407b1SChuck Lever * cookie3 cookie; 1245d9c407b1SChuck Lever * cookieverf3 cookieverf; 1246d9c407b1SChuck Lever * count3 dircount; 1247d9c407b1SChuck Lever * count3 maxcount; 1248d9c407b1SChuck Lever * }; 1249d9c407b1SChuck Lever */ 1250d9c407b1SChuck Lever static void encode_readdirplus3args(struct xdr_stream *xdr, 1251d9c407b1SChuck Lever const struct nfs3_readdirargs *args) 1252d9c407b1SChuck Lever { 1253d9c407b1SChuck Lever __be32 *p; 1254d9c407b1SChuck Lever 1255d9c407b1SChuck Lever encode_nfs_fh3(xdr, args->fh); 1256d9c407b1SChuck Lever 1257d9c407b1SChuck Lever p = xdr_reserve_space(xdr, 8 + NFS3_COOKIEVERFSIZE + 4 + 4); 1258d9c407b1SChuck Lever p = xdr_encode_cookie3(p, args->cookie); 1259d9c407b1SChuck Lever p = xdr_encode_cookieverf3(p, args->verf); 1260d9c407b1SChuck Lever 1261d9c407b1SChuck Lever /* 1262d9c407b1SChuck Lever * readdirplus: need dircount + buffer size. 1263d9c407b1SChuck Lever * We just make sure we make dircount big enough 1264d9c407b1SChuck Lever */ 1265d9c407b1SChuck Lever *p++ = cpu_to_be32(args->count >> 3); 1266d9c407b1SChuck Lever 1267d9c407b1SChuck Lever *p = cpu_to_be32(args->count); 1268d9c407b1SChuck Lever } 1269d9c407b1SChuck Lever 12709f06c719SChuck Lever static void nfs3_xdr_enc_readdirplus3args(struct rpc_rqst *req, 12719f06c719SChuck Lever struct xdr_stream *xdr, 1272d9c407b1SChuck Lever const struct nfs3_readdirargs *args) 1273d9c407b1SChuck Lever { 12749f06c719SChuck Lever encode_readdirplus3args(xdr, args); 1275d9c407b1SChuck Lever prepare_reply_buffer(req, args->pages, 0, 1276d9c407b1SChuck Lever args->count, NFS3_readdirres_sz); 1277d9c407b1SChuck Lever } 1278d9c407b1SChuck Lever 1279d9c407b1SChuck Lever /* 1280d9c407b1SChuck Lever * 3.3.21 COMMIT3args 1281d9c407b1SChuck Lever * 1282d9c407b1SChuck Lever * struct COMMIT3args { 1283d9c407b1SChuck Lever * nfs_fh3 file; 1284d9c407b1SChuck Lever * offset3 offset; 1285d9c407b1SChuck Lever * count3 count; 1286d9c407b1SChuck Lever * }; 1287d9c407b1SChuck Lever */ 1288d9c407b1SChuck Lever static void encode_commit3args(struct xdr_stream *xdr, 12890b7c0153SFred Isaman const struct nfs_commitargs *args) 1290d9c407b1SChuck Lever { 1291d9c407b1SChuck Lever __be32 *p; 1292d9c407b1SChuck Lever 1293d9c407b1SChuck Lever encode_nfs_fh3(xdr, args->fh); 1294d9c407b1SChuck Lever 1295d9c407b1SChuck Lever p = xdr_reserve_space(xdr, 8 + 4); 1296d9c407b1SChuck Lever p = xdr_encode_hyper(p, args->offset); 1297d9c407b1SChuck Lever *p = cpu_to_be32(args->count); 1298d9c407b1SChuck Lever } 1299d9c407b1SChuck Lever 13009f06c719SChuck Lever static void nfs3_xdr_enc_commit3args(struct rpc_rqst *req, 13019f06c719SChuck Lever struct xdr_stream *xdr, 13020b7c0153SFred Isaman const struct nfs_commitargs *args) 1303d9c407b1SChuck Lever { 13049f06c719SChuck Lever encode_commit3args(xdr, args); 1305d9c407b1SChuck Lever } 1306d9c407b1SChuck Lever 1307b7fa0554SAndreas Gruenbacher #ifdef CONFIG_NFS_V3_ACL 1308b7fa0554SAndreas Gruenbacher 13099f06c719SChuck Lever static void nfs3_xdr_enc_getacl3args(struct rpc_rqst *req, 13109f06c719SChuck Lever struct xdr_stream *xdr, 1311d9c407b1SChuck Lever const struct nfs3_getaclargs *args) 1312d9c407b1SChuck Lever { 13139f06c719SChuck Lever encode_nfs_fh3(xdr, args->fh); 13149f06c719SChuck Lever encode_uint32(xdr, args->mask); 1315d9c407b1SChuck Lever if (args->mask & (NFS_ACL | NFS_DFACL)) 1316d9c407b1SChuck Lever prepare_reply_buffer(req, args->pages, 0, 1317d9c407b1SChuck Lever NFSACL_MAXPAGES << PAGE_SHIFT, 1318d9c407b1SChuck Lever ACL3_getaclres_sz); 1319d9c407b1SChuck Lever } 1320d9c407b1SChuck Lever 13219f06c719SChuck Lever static void nfs3_xdr_enc_setacl3args(struct rpc_rqst *req, 13229f06c719SChuck Lever struct xdr_stream *xdr, 1323d9c407b1SChuck Lever const struct nfs3_setaclargs *args) 1324d9c407b1SChuck Lever { 1325d9c407b1SChuck Lever unsigned int base; 1326d9c407b1SChuck Lever int error; 1327d9c407b1SChuck Lever 13289f06c719SChuck Lever encode_nfs_fh3(xdr, NFS_FH(args->inode)); 13299f06c719SChuck Lever encode_uint32(xdr, args->mask); 1330d9c407b1SChuck Lever 1331d9c407b1SChuck Lever base = req->rq_slen; 1332ee5dc773SChuck Lever if (args->npages != 0) 1333ee5dc773SChuck Lever xdr_write_pages(xdr, args->pages, 0, args->len); 1334ee5dc773SChuck Lever else 1335ee5dc773SChuck Lever xdr_reserve_space(xdr, NFS_ACL_INLINE_BUFSIZE); 1336ee5dc773SChuck Lever 13379f06c719SChuck Lever error = nfsacl_encode(xdr->buf, base, args->inode, 1338d9c407b1SChuck Lever (args->mask & NFS_ACL) ? 1339d9c407b1SChuck Lever args->acl_access : NULL, 1, 0); 13407fc38846STrond Myklebust /* FIXME: this is just broken */ 1341d9c407b1SChuck Lever BUG_ON(error < 0); 13429f06c719SChuck Lever error = nfsacl_encode(xdr->buf, base + error, args->inode, 1343d9c407b1SChuck Lever (args->mask & NFS_DFACL) ? 1344d9c407b1SChuck Lever args->acl_default : NULL, 1, 1345d9c407b1SChuck Lever NFS_ACL_DEFAULT); 1346d9c407b1SChuck Lever BUG_ON(error < 0); 1347d9c407b1SChuck Lever } 1348d9c407b1SChuck Lever 1349b7fa0554SAndreas Gruenbacher #endif /* CONFIG_NFS_V3_ACL */ 1350b7fa0554SAndreas Gruenbacher 13511da177e4SLinus Torvalds /* 1352b2cdd9c9SChuck Lever * NFSv3 XDR decode functions 1353b2cdd9c9SChuck Lever * 1354b2cdd9c9SChuck Lever * NFSv3 result types are defined in section 3.3 of RFC 1813: 1355b2cdd9c9SChuck Lever * "NFS Version 3 Protocol Specification". 13561da177e4SLinus Torvalds */ 13571da177e4SLinus Torvalds 13581da177e4SLinus Torvalds /* 1359e4f93234SChuck Lever * 3.3.1 GETATTR3res 1360e4f93234SChuck Lever * 1361e4f93234SChuck Lever * struct GETATTR3resok { 1362e4f93234SChuck Lever * fattr3 obj_attributes; 1363e4f93234SChuck Lever * }; 1364e4f93234SChuck Lever * 1365e4f93234SChuck Lever * union GETATTR3res switch (nfsstat3 status) { 1366e4f93234SChuck Lever * case NFS3_OK: 1367e4f93234SChuck Lever * GETATTR3resok resok; 1368e4f93234SChuck Lever * default: 1369e4f93234SChuck Lever * void; 1370e4f93234SChuck Lever * }; 1371e4f93234SChuck Lever */ 1372bf269551SChuck Lever static int nfs3_xdr_dec_getattr3res(struct rpc_rqst *req, 1373bf269551SChuck Lever struct xdr_stream *xdr, 1374e4f93234SChuck Lever struct nfs_fattr *result) 1375e4f93234SChuck Lever { 1376e4f93234SChuck Lever enum nfs_stat status; 1377e4f93234SChuck Lever int error; 1378e4f93234SChuck Lever 1379bf269551SChuck Lever error = decode_nfsstat3(xdr, &status); 1380e4f93234SChuck Lever if (unlikely(error)) 1381e4f93234SChuck Lever goto out; 1382e4f93234SChuck Lever if (status != NFS3_OK) 1383e4f93234SChuck Lever goto out_default; 1384bf269551SChuck Lever error = decode_fattr3(xdr, result); 1385e4f93234SChuck Lever out: 1386e4f93234SChuck Lever return error; 1387e4f93234SChuck Lever out_default: 13885e7e5a0dSBryan Schumaker return nfs3_stat_to_errno(status); 1389e4f93234SChuck Lever } 1390e4f93234SChuck Lever 1391e4f93234SChuck Lever /* 1392e4f93234SChuck Lever * 3.3.2 SETATTR3res 1393e4f93234SChuck Lever * 1394e4f93234SChuck Lever * struct SETATTR3resok { 1395e4f93234SChuck Lever * wcc_data obj_wcc; 1396e4f93234SChuck Lever * }; 1397e4f93234SChuck Lever * 1398e4f93234SChuck Lever * struct SETATTR3resfail { 1399e4f93234SChuck Lever * wcc_data obj_wcc; 1400e4f93234SChuck Lever * }; 1401e4f93234SChuck Lever * 1402e4f93234SChuck Lever * union SETATTR3res switch (nfsstat3 status) { 1403e4f93234SChuck Lever * case NFS3_OK: 1404e4f93234SChuck Lever * SETATTR3resok resok; 1405e4f93234SChuck Lever * default: 1406e4f93234SChuck Lever * SETATTR3resfail resfail; 1407e4f93234SChuck Lever * }; 1408e4f93234SChuck Lever */ 1409bf269551SChuck Lever static int nfs3_xdr_dec_setattr3res(struct rpc_rqst *req, 1410bf269551SChuck Lever struct xdr_stream *xdr, 1411e4f93234SChuck Lever struct nfs_fattr *result) 1412e4f93234SChuck Lever { 1413e4f93234SChuck Lever enum nfs_stat status; 1414e4f93234SChuck Lever int error; 1415e4f93234SChuck Lever 1416bf269551SChuck Lever error = decode_nfsstat3(xdr, &status); 1417e4f93234SChuck Lever if (unlikely(error)) 1418e4f93234SChuck Lever goto out; 1419bf269551SChuck Lever error = decode_wcc_data(xdr, result); 1420e4f93234SChuck Lever if (unlikely(error)) 1421e4f93234SChuck Lever goto out; 1422e4f93234SChuck Lever if (status != NFS3_OK) 1423e4f93234SChuck Lever goto out_status; 1424e4f93234SChuck Lever out: 1425e4f93234SChuck Lever return error; 1426e4f93234SChuck Lever out_status: 14275e7e5a0dSBryan Schumaker return nfs3_stat_to_errno(status); 1428e4f93234SChuck Lever } 1429e4f93234SChuck Lever 14301da177e4SLinus Torvalds /* 1431e4f93234SChuck Lever * 3.3.3 LOOKUP3res 1432e4f93234SChuck Lever * 1433e4f93234SChuck Lever * struct LOOKUP3resok { 1434e4f93234SChuck Lever * nfs_fh3 object; 1435e4f93234SChuck Lever * post_op_attr obj_attributes; 1436e4f93234SChuck Lever * post_op_attr dir_attributes; 1437e4f93234SChuck Lever * }; 1438e4f93234SChuck Lever * 1439e4f93234SChuck Lever * struct LOOKUP3resfail { 1440e4f93234SChuck Lever * post_op_attr dir_attributes; 1441e4f93234SChuck Lever * }; 1442e4f93234SChuck Lever * 1443e4f93234SChuck Lever * union LOOKUP3res switch (nfsstat3 status) { 1444e4f93234SChuck Lever * case NFS3_OK: 1445e4f93234SChuck Lever * LOOKUP3resok resok; 1446e4f93234SChuck Lever * default: 1447e4f93234SChuck Lever * LOOKUP3resfail resfail; 1448e4f93234SChuck Lever * }; 1449e4f93234SChuck Lever */ 1450bf269551SChuck Lever static int nfs3_xdr_dec_lookup3res(struct rpc_rqst *req, 1451bf269551SChuck Lever struct xdr_stream *xdr, 1452e4f93234SChuck Lever struct nfs3_diropres *result) 1453e4f93234SChuck Lever { 1454e4f93234SChuck Lever enum nfs_stat status; 1455e4f93234SChuck Lever int error; 1456e4f93234SChuck Lever 1457bf269551SChuck Lever error = decode_nfsstat3(xdr, &status); 1458e4f93234SChuck Lever if (unlikely(error)) 1459e4f93234SChuck Lever goto out; 1460e4f93234SChuck Lever if (status != NFS3_OK) 1461e4f93234SChuck Lever goto out_default; 1462bf269551SChuck Lever error = decode_nfs_fh3(xdr, result->fh); 1463e4f93234SChuck Lever if (unlikely(error)) 1464e4f93234SChuck Lever goto out; 1465bf269551SChuck Lever error = decode_post_op_attr(xdr, result->fattr); 1466e4f93234SChuck Lever if (unlikely(error)) 1467e4f93234SChuck Lever goto out; 1468bf269551SChuck Lever error = decode_post_op_attr(xdr, result->dir_attr); 1469e4f93234SChuck Lever out: 1470e4f93234SChuck Lever return error; 1471e4f93234SChuck Lever out_default: 1472bf269551SChuck Lever error = decode_post_op_attr(xdr, result->dir_attr); 1473e4f93234SChuck Lever if (unlikely(error)) 1474e4f93234SChuck Lever goto out; 14755e7e5a0dSBryan Schumaker return nfs3_stat_to_errno(status); 1476e4f93234SChuck Lever } 1477e4f93234SChuck Lever 1478e4f93234SChuck Lever /* 1479e4f93234SChuck Lever * 3.3.4 ACCESS3res 1480e4f93234SChuck Lever * 1481e4f93234SChuck Lever * struct ACCESS3resok { 1482e4f93234SChuck Lever * post_op_attr obj_attributes; 1483e4f93234SChuck Lever * uint32 access; 1484e4f93234SChuck Lever * }; 1485e4f93234SChuck Lever * 1486e4f93234SChuck Lever * struct ACCESS3resfail { 1487e4f93234SChuck Lever * post_op_attr obj_attributes; 1488e4f93234SChuck Lever * }; 1489e4f93234SChuck Lever * 1490e4f93234SChuck Lever * union ACCESS3res switch (nfsstat3 status) { 1491e4f93234SChuck Lever * case NFS3_OK: 1492e4f93234SChuck Lever * ACCESS3resok resok; 1493e4f93234SChuck Lever * default: 1494e4f93234SChuck Lever * ACCESS3resfail resfail; 1495e4f93234SChuck Lever * }; 1496e4f93234SChuck Lever */ 1497bf269551SChuck Lever static int nfs3_xdr_dec_access3res(struct rpc_rqst *req, 1498bf269551SChuck Lever struct xdr_stream *xdr, 1499e4f93234SChuck Lever struct nfs3_accessres *result) 1500e4f93234SChuck Lever { 1501e4f93234SChuck Lever enum nfs_stat status; 1502e4f93234SChuck Lever int error; 1503e4f93234SChuck Lever 1504bf269551SChuck Lever error = decode_nfsstat3(xdr, &status); 1505e4f93234SChuck Lever if (unlikely(error)) 1506e4f93234SChuck Lever goto out; 1507bf269551SChuck Lever error = decode_post_op_attr(xdr, result->fattr); 1508e4f93234SChuck Lever if (unlikely(error)) 1509e4f93234SChuck Lever goto out; 1510e4f93234SChuck Lever if (status != NFS3_OK) 1511e4f93234SChuck Lever goto out_default; 1512bf269551SChuck Lever error = decode_uint32(xdr, &result->access); 1513e4f93234SChuck Lever out: 1514e4f93234SChuck Lever return error; 1515e4f93234SChuck Lever out_default: 15165e7e5a0dSBryan Schumaker return nfs3_stat_to_errno(status); 1517e4f93234SChuck Lever } 1518e4f93234SChuck Lever 1519e4f93234SChuck Lever /* 1520e4f93234SChuck Lever * 3.3.5 READLINK3res 1521e4f93234SChuck Lever * 1522e4f93234SChuck Lever * struct READLINK3resok { 1523e4f93234SChuck Lever * post_op_attr symlink_attributes; 1524e4f93234SChuck Lever * nfspath3 data; 1525e4f93234SChuck Lever * }; 1526e4f93234SChuck Lever * 1527e4f93234SChuck Lever * struct READLINK3resfail { 1528e4f93234SChuck Lever * post_op_attr symlink_attributes; 1529e4f93234SChuck Lever * }; 1530e4f93234SChuck Lever * 1531e4f93234SChuck Lever * union READLINK3res switch (nfsstat3 status) { 1532e4f93234SChuck Lever * case NFS3_OK: 1533e4f93234SChuck Lever * READLINK3resok resok; 1534e4f93234SChuck Lever * default: 1535e4f93234SChuck Lever * READLINK3resfail resfail; 1536e4f93234SChuck Lever * }; 1537e4f93234SChuck Lever */ 1538bf269551SChuck Lever static int nfs3_xdr_dec_readlink3res(struct rpc_rqst *req, 1539bf269551SChuck Lever struct xdr_stream *xdr, 1540e4f93234SChuck Lever struct nfs_fattr *result) 1541e4f93234SChuck Lever { 1542e4f93234SChuck Lever enum nfs_stat status; 1543e4f93234SChuck Lever int error; 1544e4f93234SChuck Lever 1545bf269551SChuck Lever error = decode_nfsstat3(xdr, &status); 1546e4f93234SChuck Lever if (unlikely(error)) 1547e4f93234SChuck Lever goto out; 1548bf269551SChuck Lever error = decode_post_op_attr(xdr, result); 1549e4f93234SChuck Lever if (unlikely(error)) 1550e4f93234SChuck Lever goto out; 1551e4f93234SChuck Lever if (status != NFS3_OK) 1552e4f93234SChuck Lever goto out_default; 1553bf269551SChuck Lever error = decode_nfspath3(xdr); 1554e4f93234SChuck Lever out: 1555e4f93234SChuck Lever return error; 1556e4f93234SChuck Lever out_default: 15575e7e5a0dSBryan Schumaker return nfs3_stat_to_errno(status); 1558e4f93234SChuck Lever } 1559e4f93234SChuck Lever 1560e4f93234SChuck Lever /* 1561e4f93234SChuck Lever * 3.3.6 READ3res 1562e4f93234SChuck Lever * 1563e4f93234SChuck Lever * struct READ3resok { 1564e4f93234SChuck Lever * post_op_attr file_attributes; 1565e4f93234SChuck Lever * count3 count; 1566e4f93234SChuck Lever * bool eof; 1567e4f93234SChuck Lever * opaque data<>; 1568e4f93234SChuck Lever * }; 1569e4f93234SChuck Lever * 1570e4f93234SChuck Lever * struct READ3resfail { 1571e4f93234SChuck Lever * post_op_attr file_attributes; 1572e4f93234SChuck Lever * }; 1573e4f93234SChuck Lever * 1574e4f93234SChuck Lever * union READ3res switch (nfsstat3 status) { 1575e4f93234SChuck Lever * case NFS3_OK: 1576e4f93234SChuck Lever * READ3resok resok; 1577e4f93234SChuck Lever * default: 1578e4f93234SChuck Lever * READ3resfail resfail; 1579e4f93234SChuck Lever * }; 1580e4f93234SChuck Lever */ 1581e4f93234SChuck Lever static int decode_read3resok(struct xdr_stream *xdr, 1582e4f93234SChuck Lever struct nfs_readres *result) 1583e4f93234SChuck Lever { 1584e4f93234SChuck Lever u32 eof, count, ocount, recvd; 1585e4f93234SChuck Lever __be32 *p; 1586e4f93234SChuck Lever 1587e4f93234SChuck Lever p = xdr_inline_decode(xdr, 4 + 4 + 4); 1588e4f93234SChuck Lever if (unlikely(p == NULL)) 1589e4f93234SChuck Lever goto out_overflow; 1590e4f93234SChuck Lever count = be32_to_cpup(p++); 1591e4f93234SChuck Lever eof = be32_to_cpup(p++); 1592e4f93234SChuck Lever ocount = be32_to_cpup(p++); 1593e4f93234SChuck Lever if (unlikely(ocount != count)) 1594e4f93234SChuck Lever goto out_mismatch; 159564bd577eSTrond Myklebust recvd = xdr_read_pages(xdr, count); 1596e4f93234SChuck Lever if (unlikely(count > recvd)) 1597e4f93234SChuck Lever goto out_cheating; 1598e4f93234SChuck Lever out: 1599e4f93234SChuck Lever result->eof = eof; 1600e4f93234SChuck Lever result->count = count; 1601e4f93234SChuck Lever return count; 1602e4f93234SChuck Lever out_mismatch: 1603e4f93234SChuck Lever dprintk("NFS: READ count doesn't match length of opaque: " 1604e4f93234SChuck Lever "count %u != ocount %u\n", count, ocount); 1605e4f93234SChuck Lever return -EIO; 1606e4f93234SChuck Lever out_cheating: 1607e4f93234SChuck Lever dprintk("NFS: server cheating in read result: " 1608e4f93234SChuck Lever "count %u > recvd %u\n", count, recvd); 1609e4f93234SChuck Lever count = recvd; 1610e4f93234SChuck Lever eof = 0; 1611e4f93234SChuck Lever goto out; 1612e4f93234SChuck Lever out_overflow: 1613e4f93234SChuck Lever print_overflow_msg(__func__, xdr); 1614e4f93234SChuck Lever return -EIO; 1615e4f93234SChuck Lever } 1616e4f93234SChuck Lever 1617bf269551SChuck Lever static int nfs3_xdr_dec_read3res(struct rpc_rqst *req, struct xdr_stream *xdr, 1618e4f93234SChuck Lever struct nfs_readres *result) 1619e4f93234SChuck Lever { 1620e4f93234SChuck Lever enum nfs_stat status; 1621e4f93234SChuck Lever int error; 1622e4f93234SChuck Lever 1623bf269551SChuck Lever error = decode_nfsstat3(xdr, &status); 1624e4f93234SChuck Lever if (unlikely(error)) 1625e4f93234SChuck Lever goto out; 1626bf269551SChuck Lever error = decode_post_op_attr(xdr, result->fattr); 1627e4f93234SChuck Lever if (unlikely(error)) 1628e4f93234SChuck Lever goto out; 1629e4f93234SChuck Lever if (status != NFS3_OK) 1630e4f93234SChuck Lever goto out_status; 1631bf269551SChuck Lever error = decode_read3resok(xdr, result); 1632e4f93234SChuck Lever out: 1633e4f93234SChuck Lever return error; 1634e4f93234SChuck Lever out_status: 16355e7e5a0dSBryan Schumaker return nfs3_stat_to_errno(status); 1636e4f93234SChuck Lever } 1637e4f93234SChuck Lever 1638e4f93234SChuck Lever /* 1639e4f93234SChuck Lever * 3.3.7 WRITE3res 1640e4f93234SChuck Lever * 1641e4f93234SChuck Lever * enum stable_how { 1642e4f93234SChuck Lever * UNSTABLE = 0, 1643e4f93234SChuck Lever * DATA_SYNC = 1, 1644e4f93234SChuck Lever * FILE_SYNC = 2 1645e4f93234SChuck Lever * }; 1646e4f93234SChuck Lever * 1647e4f93234SChuck Lever * struct WRITE3resok { 1648e4f93234SChuck Lever * wcc_data file_wcc; 1649e4f93234SChuck Lever * count3 count; 1650e4f93234SChuck Lever * stable_how committed; 1651e4f93234SChuck Lever * writeverf3 verf; 1652e4f93234SChuck Lever * }; 1653e4f93234SChuck Lever * 1654e4f93234SChuck Lever * struct WRITE3resfail { 1655e4f93234SChuck Lever * wcc_data file_wcc; 1656e4f93234SChuck Lever * }; 1657e4f93234SChuck Lever * 1658e4f93234SChuck Lever * union WRITE3res switch (nfsstat3 status) { 1659e4f93234SChuck Lever * case NFS3_OK: 1660e4f93234SChuck Lever * WRITE3resok resok; 1661e4f93234SChuck Lever * default: 1662e4f93234SChuck Lever * WRITE3resfail resfail; 1663e4f93234SChuck Lever * }; 1664e4f93234SChuck Lever */ 1665e4f93234SChuck Lever static int decode_write3resok(struct xdr_stream *xdr, 1666e4f93234SChuck Lever struct nfs_writeres *result) 1667e4f93234SChuck Lever { 1668e4f93234SChuck Lever __be32 *p; 1669e4f93234SChuck Lever 16702f2c63bcSTrond Myklebust p = xdr_inline_decode(xdr, 4 + 4); 1671e4f93234SChuck Lever if (unlikely(p == NULL)) 1672e4f93234SChuck Lever goto out_overflow; 1673e4f93234SChuck Lever result->count = be32_to_cpup(p++); 1674e4f93234SChuck Lever result->verf->committed = be32_to_cpup(p++); 1675e4f93234SChuck Lever if (unlikely(result->verf->committed > NFS_FILE_SYNC)) 1676e4f93234SChuck Lever goto out_badvalue; 16772f2c63bcSTrond Myklebust if (decode_writeverf3(xdr, &result->verf->verifier)) 16782f2c63bcSTrond Myklebust goto out_eio; 1679e4f93234SChuck Lever return result->count; 1680e4f93234SChuck Lever out_badvalue: 1681e4f93234SChuck Lever dprintk("NFS: bad stable_how value: %u\n", result->verf->committed); 1682e4f93234SChuck Lever return -EIO; 1683e4f93234SChuck Lever out_overflow: 1684e4f93234SChuck Lever print_overflow_msg(__func__, xdr); 16852f2c63bcSTrond Myklebust out_eio: 1686e4f93234SChuck Lever return -EIO; 1687e4f93234SChuck Lever } 1688e4f93234SChuck Lever 1689bf269551SChuck Lever static int nfs3_xdr_dec_write3res(struct rpc_rqst *req, struct xdr_stream *xdr, 1690e4f93234SChuck Lever struct nfs_writeres *result) 1691e4f93234SChuck Lever { 1692e4f93234SChuck Lever enum nfs_stat status; 1693e4f93234SChuck Lever int error; 1694e4f93234SChuck Lever 1695bf269551SChuck Lever error = decode_nfsstat3(xdr, &status); 1696e4f93234SChuck Lever if (unlikely(error)) 1697e4f93234SChuck Lever goto out; 1698bf269551SChuck Lever error = decode_wcc_data(xdr, result->fattr); 1699e4f93234SChuck Lever if (unlikely(error)) 1700e4f93234SChuck Lever goto out; 1701e4f93234SChuck Lever if (status != NFS3_OK) 1702e4f93234SChuck Lever goto out_status; 1703bf269551SChuck Lever error = decode_write3resok(xdr, result); 1704e4f93234SChuck Lever out: 1705e4f93234SChuck Lever return error; 1706e4f93234SChuck Lever out_status: 17075e7e5a0dSBryan Schumaker return nfs3_stat_to_errno(status); 1708e4f93234SChuck Lever } 1709e4f93234SChuck Lever 1710e4f93234SChuck Lever /* 1711e4f93234SChuck Lever * 3.3.8 CREATE3res 1712e4f93234SChuck Lever * 1713e4f93234SChuck Lever * struct CREATE3resok { 1714e4f93234SChuck Lever * post_op_fh3 obj; 1715e4f93234SChuck Lever * post_op_attr obj_attributes; 1716e4f93234SChuck Lever * wcc_data dir_wcc; 1717e4f93234SChuck Lever * }; 1718e4f93234SChuck Lever * 1719e4f93234SChuck Lever * struct CREATE3resfail { 1720e4f93234SChuck Lever * wcc_data dir_wcc; 1721e4f93234SChuck Lever * }; 1722e4f93234SChuck Lever * 1723e4f93234SChuck Lever * union CREATE3res switch (nfsstat3 status) { 1724e4f93234SChuck Lever * case NFS3_OK: 1725e4f93234SChuck Lever * CREATE3resok resok; 1726e4f93234SChuck Lever * default: 1727e4f93234SChuck Lever * CREATE3resfail resfail; 1728e4f93234SChuck Lever * }; 1729e4f93234SChuck Lever */ 1730e4f93234SChuck Lever static int decode_create3resok(struct xdr_stream *xdr, 1731e4f93234SChuck Lever struct nfs3_diropres *result) 1732e4f93234SChuck Lever { 1733e4f93234SChuck Lever int error; 1734e4f93234SChuck Lever 1735e4f93234SChuck Lever error = decode_post_op_fh3(xdr, result->fh); 1736e4f93234SChuck Lever if (unlikely(error)) 1737e4f93234SChuck Lever goto out; 1738e4f93234SChuck Lever error = decode_post_op_attr(xdr, result->fattr); 1739e4f93234SChuck Lever if (unlikely(error)) 1740e4f93234SChuck Lever goto out; 1741e4f93234SChuck Lever /* The server isn't required to return a file handle. 1742e4f93234SChuck Lever * If it didn't, force the client to perform a LOOKUP 1743e4f93234SChuck Lever * to determine the correct file handle and attribute 1744e4f93234SChuck Lever * values for the new object. */ 1745e4f93234SChuck Lever if (result->fh->size == 0) 1746e4f93234SChuck Lever result->fattr->valid = 0; 1747e4f93234SChuck Lever error = decode_wcc_data(xdr, result->dir_attr); 1748e4f93234SChuck Lever out: 1749e4f93234SChuck Lever return error; 1750e4f93234SChuck Lever } 1751e4f93234SChuck Lever 1752bf269551SChuck Lever static int nfs3_xdr_dec_create3res(struct rpc_rqst *req, 1753bf269551SChuck Lever struct xdr_stream *xdr, 1754e4f93234SChuck Lever struct nfs3_diropres *result) 1755e4f93234SChuck Lever { 1756e4f93234SChuck Lever enum nfs_stat status; 1757e4f93234SChuck Lever int error; 1758e4f93234SChuck Lever 1759bf269551SChuck Lever error = decode_nfsstat3(xdr, &status); 1760e4f93234SChuck Lever if (unlikely(error)) 1761e4f93234SChuck Lever goto out; 1762e4f93234SChuck Lever if (status != NFS3_OK) 1763e4f93234SChuck Lever goto out_default; 1764bf269551SChuck Lever error = decode_create3resok(xdr, result); 1765e4f93234SChuck Lever out: 1766e4f93234SChuck Lever return error; 1767e4f93234SChuck Lever out_default: 1768bf269551SChuck Lever error = decode_wcc_data(xdr, result->dir_attr); 1769e4f93234SChuck Lever if (unlikely(error)) 1770e4f93234SChuck Lever goto out; 17715e7e5a0dSBryan Schumaker return nfs3_stat_to_errno(status); 1772e4f93234SChuck Lever } 1773e4f93234SChuck Lever 1774e4f93234SChuck Lever /* 1775e4f93234SChuck Lever * 3.3.12 REMOVE3res 1776e4f93234SChuck Lever * 1777e4f93234SChuck Lever * struct REMOVE3resok { 1778e4f93234SChuck Lever * wcc_data dir_wcc; 1779e4f93234SChuck Lever * }; 1780e4f93234SChuck Lever * 1781e4f93234SChuck Lever * struct REMOVE3resfail { 1782e4f93234SChuck Lever * wcc_data dir_wcc; 1783e4f93234SChuck Lever * }; 1784e4f93234SChuck Lever * 1785e4f93234SChuck Lever * union REMOVE3res switch (nfsstat3 status) { 1786e4f93234SChuck Lever * case NFS3_OK: 1787e4f93234SChuck Lever * REMOVE3resok resok; 1788e4f93234SChuck Lever * default: 1789e4f93234SChuck Lever * REMOVE3resfail resfail; 1790e4f93234SChuck Lever * }; 1791e4f93234SChuck Lever */ 1792bf269551SChuck Lever static int nfs3_xdr_dec_remove3res(struct rpc_rqst *req, 1793bf269551SChuck Lever struct xdr_stream *xdr, 1794e4f93234SChuck Lever struct nfs_removeres *result) 1795e4f93234SChuck Lever { 1796e4f93234SChuck Lever enum nfs_stat status; 1797e4f93234SChuck Lever int error; 1798e4f93234SChuck Lever 1799bf269551SChuck Lever error = decode_nfsstat3(xdr, &status); 1800e4f93234SChuck Lever if (unlikely(error)) 1801e4f93234SChuck Lever goto out; 1802bf269551SChuck Lever error = decode_wcc_data(xdr, result->dir_attr); 1803e4f93234SChuck Lever if (unlikely(error)) 1804e4f93234SChuck Lever goto out; 1805e4f93234SChuck Lever if (status != NFS3_OK) 1806e4f93234SChuck Lever goto out_status; 1807e4f93234SChuck Lever out: 1808e4f93234SChuck Lever return error; 1809e4f93234SChuck Lever out_status: 18105e7e5a0dSBryan Schumaker return nfs3_stat_to_errno(status); 1811e4f93234SChuck Lever } 1812e4f93234SChuck Lever 1813e4f93234SChuck Lever /* 1814e4f93234SChuck Lever * 3.3.14 RENAME3res 1815e4f93234SChuck Lever * 1816e4f93234SChuck Lever * struct RENAME3resok { 1817e4f93234SChuck Lever * wcc_data fromdir_wcc; 1818e4f93234SChuck Lever * wcc_data todir_wcc; 1819e4f93234SChuck Lever * }; 1820e4f93234SChuck Lever * 1821e4f93234SChuck Lever * struct RENAME3resfail { 1822e4f93234SChuck Lever * wcc_data fromdir_wcc; 1823e4f93234SChuck Lever * wcc_data todir_wcc; 1824e4f93234SChuck Lever * }; 1825e4f93234SChuck Lever * 1826e4f93234SChuck Lever * union RENAME3res switch (nfsstat3 status) { 1827e4f93234SChuck Lever * case NFS3_OK: 1828e4f93234SChuck Lever * RENAME3resok resok; 1829e4f93234SChuck Lever * default: 1830e4f93234SChuck Lever * RENAME3resfail resfail; 1831e4f93234SChuck Lever * }; 1832e4f93234SChuck Lever */ 1833bf269551SChuck Lever static int nfs3_xdr_dec_rename3res(struct rpc_rqst *req, 1834bf269551SChuck Lever struct xdr_stream *xdr, 1835e4f93234SChuck Lever struct nfs_renameres *result) 1836e4f93234SChuck Lever { 1837e4f93234SChuck Lever enum nfs_stat status; 1838e4f93234SChuck Lever int error; 1839e4f93234SChuck Lever 1840bf269551SChuck Lever error = decode_nfsstat3(xdr, &status); 1841e4f93234SChuck Lever if (unlikely(error)) 1842e4f93234SChuck Lever goto out; 1843bf269551SChuck Lever error = decode_wcc_data(xdr, result->old_fattr); 1844e4f93234SChuck Lever if (unlikely(error)) 1845e4f93234SChuck Lever goto out; 1846bf269551SChuck Lever error = decode_wcc_data(xdr, result->new_fattr); 1847e4f93234SChuck Lever if (unlikely(error)) 1848e4f93234SChuck Lever goto out; 1849e4f93234SChuck Lever if (status != NFS3_OK) 1850e4f93234SChuck Lever goto out_status; 1851e4f93234SChuck Lever out: 1852e4f93234SChuck Lever return error; 1853e4f93234SChuck Lever out_status: 18545e7e5a0dSBryan Schumaker return nfs3_stat_to_errno(status); 1855e4f93234SChuck Lever } 1856e4f93234SChuck Lever 1857e4f93234SChuck Lever /* 1858e4f93234SChuck Lever * 3.3.15 LINK3res 1859e4f93234SChuck Lever * 1860e4f93234SChuck Lever * struct LINK3resok { 1861e4f93234SChuck Lever * post_op_attr file_attributes; 1862e4f93234SChuck Lever * wcc_data linkdir_wcc; 1863e4f93234SChuck Lever * }; 1864e4f93234SChuck Lever * 1865e4f93234SChuck Lever * struct LINK3resfail { 1866e4f93234SChuck Lever * post_op_attr file_attributes; 1867e4f93234SChuck Lever * wcc_data linkdir_wcc; 1868e4f93234SChuck Lever * }; 1869e4f93234SChuck Lever * 1870e4f93234SChuck Lever * union LINK3res switch (nfsstat3 status) { 1871e4f93234SChuck Lever * case NFS3_OK: 1872e4f93234SChuck Lever * LINK3resok resok; 1873e4f93234SChuck Lever * default: 1874e4f93234SChuck Lever * LINK3resfail resfail; 1875e4f93234SChuck Lever * }; 1876e4f93234SChuck Lever */ 1877bf269551SChuck Lever static int nfs3_xdr_dec_link3res(struct rpc_rqst *req, struct xdr_stream *xdr, 1878e4f93234SChuck Lever struct nfs3_linkres *result) 1879e4f93234SChuck Lever { 1880e4f93234SChuck Lever enum nfs_stat status; 1881e4f93234SChuck Lever int error; 1882e4f93234SChuck Lever 1883bf269551SChuck Lever error = decode_nfsstat3(xdr, &status); 1884e4f93234SChuck Lever if (unlikely(error)) 1885e4f93234SChuck Lever goto out; 1886bf269551SChuck Lever error = decode_post_op_attr(xdr, result->fattr); 1887e4f93234SChuck Lever if (unlikely(error)) 1888e4f93234SChuck Lever goto out; 1889bf269551SChuck Lever error = decode_wcc_data(xdr, result->dir_attr); 1890e4f93234SChuck Lever if (unlikely(error)) 1891e4f93234SChuck Lever goto out; 1892e4f93234SChuck Lever if (status != NFS3_OK) 1893e4f93234SChuck Lever goto out_status; 1894e4f93234SChuck Lever out: 1895e4f93234SChuck Lever return error; 1896e4f93234SChuck Lever out_status: 18975e7e5a0dSBryan Schumaker return nfs3_stat_to_errno(status); 1898e4f93234SChuck Lever } 1899e4f93234SChuck Lever 1900e4f93234SChuck Lever /** 1901e4f93234SChuck Lever * nfs3_decode_dirent - Decode a single NFSv3 directory entry stored in 1902e4f93234SChuck Lever * the local page cache 1903e4f93234SChuck Lever * @xdr: XDR stream where entry resides 1904e4f93234SChuck Lever * @entry: buffer to fill in with entry data 1905e4f93234SChuck Lever * @plus: boolean indicating whether this should be a readdirplus entry 1906e4f93234SChuck Lever * 1907573c4e1eSChuck Lever * Returns zero if successful, otherwise a negative errno value is 1908573c4e1eSChuck Lever * returned. 1909e4f93234SChuck Lever * 1910e4f93234SChuck Lever * This function is not invoked during READDIR reply decoding, but 1911e4f93234SChuck Lever * rather whenever an application invokes the getdents(2) system call 1912e4f93234SChuck Lever * on a directory already in our cache. 1913e4f93234SChuck Lever * 1914e4f93234SChuck Lever * 3.3.16 entry3 1915e4f93234SChuck Lever * 1916e4f93234SChuck Lever * struct entry3 { 1917e4f93234SChuck Lever * fileid3 fileid; 1918e4f93234SChuck Lever * filename3 name; 1919e4f93234SChuck Lever * cookie3 cookie; 1920e4f93234SChuck Lever * fhandle3 filehandle; 1921e4f93234SChuck Lever * post_op_attr3 attributes; 1922e4f93234SChuck Lever * entry3 *nextentry; 1923e4f93234SChuck Lever * }; 1924e4f93234SChuck Lever * 1925e4f93234SChuck Lever * 3.3.17 entryplus3 1926e4f93234SChuck Lever * struct entryplus3 { 1927e4f93234SChuck Lever * fileid3 fileid; 1928e4f93234SChuck Lever * filename3 name; 1929e4f93234SChuck Lever * cookie3 cookie; 1930e4f93234SChuck Lever * post_op_attr name_attributes; 1931e4f93234SChuck Lever * post_op_fh3 name_handle; 1932e4f93234SChuck Lever * entryplus3 *nextentry; 1933e4f93234SChuck Lever * }; 1934e4f93234SChuck Lever */ 1935573c4e1eSChuck Lever int nfs3_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, 1936573c4e1eSChuck Lever int plus) 1937e4f93234SChuck Lever { 1938e4f93234SChuck Lever struct nfs_entry old = *entry; 1939e4f93234SChuck Lever __be32 *p; 1940e4f93234SChuck Lever int error; 1941e4f93234SChuck Lever 1942e4f93234SChuck Lever p = xdr_inline_decode(xdr, 4); 1943e4f93234SChuck Lever if (unlikely(p == NULL)) 1944e4f93234SChuck Lever goto out_overflow; 1945e4f93234SChuck Lever if (*p == xdr_zero) { 1946e4f93234SChuck Lever p = xdr_inline_decode(xdr, 4); 1947e4f93234SChuck Lever if (unlikely(p == NULL)) 1948e4f93234SChuck Lever goto out_overflow; 1949e4f93234SChuck Lever if (*p == xdr_zero) 1950573c4e1eSChuck Lever return -EAGAIN; 1951e4f93234SChuck Lever entry->eof = 1; 1952573c4e1eSChuck Lever return -EBADCOOKIE; 1953e4f93234SChuck Lever } 1954e4f93234SChuck Lever 1955e4f93234SChuck Lever error = decode_fileid3(xdr, &entry->ino); 1956e4f93234SChuck Lever if (unlikely(error)) 1957573c4e1eSChuck Lever return error; 1958e4f93234SChuck Lever 1959e4f93234SChuck Lever error = decode_inline_filename3(xdr, &entry->name, &entry->len); 1960e4f93234SChuck Lever if (unlikely(error)) 1961573c4e1eSChuck Lever return error; 1962e4f93234SChuck Lever 1963e4f93234SChuck Lever entry->prev_cookie = entry->cookie; 1964e4f93234SChuck Lever error = decode_cookie3(xdr, &entry->cookie); 1965e4f93234SChuck Lever if (unlikely(error)) 1966573c4e1eSChuck Lever return error; 1967e4f93234SChuck Lever 1968e4f93234SChuck Lever entry->d_type = DT_UNKNOWN; 1969e4f93234SChuck Lever 1970e4f93234SChuck Lever if (plus) { 1971e4f93234SChuck Lever entry->fattr->valid = 0; 1972e4f93234SChuck Lever error = decode_post_op_attr(xdr, entry->fattr); 1973e4f93234SChuck Lever if (unlikely(error)) 1974573c4e1eSChuck Lever return error; 1975e4f93234SChuck Lever if (entry->fattr->valid & NFS_ATTR_FATTR_V3) 1976e4f93234SChuck Lever entry->d_type = nfs_umode_to_dtype(entry->fattr->mode); 1977e4f93234SChuck Lever 1978e4f93234SChuck Lever /* In fact, a post_op_fh3: */ 1979e4f93234SChuck Lever p = xdr_inline_decode(xdr, 4); 1980e4f93234SChuck Lever if (unlikely(p == NULL)) 1981e4f93234SChuck Lever goto out_overflow; 1982e4f93234SChuck Lever if (*p != xdr_zero) { 1983e4f93234SChuck Lever error = decode_nfs_fh3(xdr, entry->fh); 1984e4f93234SChuck Lever if (unlikely(error)) { 1985e4f93234SChuck Lever if (error == -E2BIG) 1986e4f93234SChuck Lever goto out_truncated; 1987573c4e1eSChuck Lever return error; 1988e4f93234SChuck Lever } 1989e4f93234SChuck Lever } else 1990e4f93234SChuck Lever zero_nfs_fh3(entry->fh); 1991e4f93234SChuck Lever } 1992e4f93234SChuck Lever 1993573c4e1eSChuck Lever return 0; 1994e4f93234SChuck Lever 1995e4f93234SChuck Lever out_overflow: 1996e4f93234SChuck Lever print_overflow_msg(__func__, xdr); 1997573c4e1eSChuck Lever return -EAGAIN; 1998e4f93234SChuck Lever out_truncated: 1999e4f93234SChuck Lever dprintk("NFS: directory entry contains invalid file handle\n"); 2000e4f93234SChuck Lever *entry = old; 2001573c4e1eSChuck Lever return -EAGAIN; 2002e4f93234SChuck Lever } 2003e4f93234SChuck Lever 2004e4f93234SChuck Lever /* 2005e4f93234SChuck Lever * 3.3.16 READDIR3res 2006e4f93234SChuck Lever * 2007e4f93234SChuck Lever * struct dirlist3 { 2008e4f93234SChuck Lever * entry3 *entries; 2009e4f93234SChuck Lever * bool eof; 2010e4f93234SChuck Lever * }; 2011e4f93234SChuck Lever * 2012e4f93234SChuck Lever * struct READDIR3resok { 2013e4f93234SChuck Lever * post_op_attr dir_attributes; 2014e4f93234SChuck Lever * cookieverf3 cookieverf; 2015e4f93234SChuck Lever * dirlist3 reply; 2016e4f93234SChuck Lever * }; 2017e4f93234SChuck Lever * 2018e4f93234SChuck Lever * struct READDIR3resfail { 2019e4f93234SChuck Lever * post_op_attr dir_attributes; 2020e4f93234SChuck Lever * }; 2021e4f93234SChuck Lever * 2022e4f93234SChuck Lever * union READDIR3res switch (nfsstat3 status) { 2023e4f93234SChuck Lever * case NFS3_OK: 2024e4f93234SChuck Lever * READDIR3resok resok; 2025e4f93234SChuck Lever * default: 2026e4f93234SChuck Lever * READDIR3resfail resfail; 2027e4f93234SChuck Lever * }; 2028e4f93234SChuck Lever * 2029e4f93234SChuck Lever * Read the directory contents into the page cache, but otherwise 2030e4f93234SChuck Lever * don't touch them. The actual decoding is done by nfs3_decode_entry() 2031e4f93234SChuck Lever * during subsequent nfs_readdir() calls. 2032e4f93234SChuck Lever */ 2033e4f93234SChuck Lever static int decode_dirlist3(struct xdr_stream *xdr) 2034e4f93234SChuck Lever { 203564bd577eSTrond Myklebust return xdr_read_pages(xdr, xdr->buf->page_len); 2036e4f93234SChuck Lever } 2037e4f93234SChuck Lever 2038e4f93234SChuck Lever static int decode_readdir3resok(struct xdr_stream *xdr, 2039e4f93234SChuck Lever struct nfs3_readdirres *result) 2040e4f93234SChuck Lever { 2041e4f93234SChuck Lever int error; 2042e4f93234SChuck Lever 2043e4f93234SChuck Lever error = decode_post_op_attr(xdr, result->dir_attr); 2044e4f93234SChuck Lever if (unlikely(error)) 2045e4f93234SChuck Lever goto out; 2046e4f93234SChuck Lever /* XXX: do we need to check if result->verf != NULL ? */ 2047e4f93234SChuck Lever error = decode_cookieverf3(xdr, result->verf); 2048e4f93234SChuck Lever if (unlikely(error)) 2049e4f93234SChuck Lever goto out; 2050e4f93234SChuck Lever error = decode_dirlist3(xdr); 2051e4f93234SChuck Lever out: 2052e4f93234SChuck Lever return error; 2053e4f93234SChuck Lever } 2054e4f93234SChuck Lever 2055bf269551SChuck Lever static int nfs3_xdr_dec_readdir3res(struct rpc_rqst *req, 2056bf269551SChuck Lever struct xdr_stream *xdr, 2057e4f93234SChuck Lever struct nfs3_readdirres *result) 2058e4f93234SChuck Lever { 2059e4f93234SChuck Lever enum nfs_stat status; 2060e4f93234SChuck Lever int error; 2061e4f93234SChuck Lever 2062bf269551SChuck Lever error = decode_nfsstat3(xdr, &status); 2063e4f93234SChuck Lever if (unlikely(error)) 2064e4f93234SChuck Lever goto out; 2065e4f93234SChuck Lever if (status != NFS3_OK) 2066e4f93234SChuck Lever goto out_default; 2067bf269551SChuck Lever error = decode_readdir3resok(xdr, result); 2068e4f93234SChuck Lever out: 2069e4f93234SChuck Lever return error; 2070e4f93234SChuck Lever out_default: 2071bf269551SChuck Lever error = decode_post_op_attr(xdr, result->dir_attr); 2072e4f93234SChuck Lever if (unlikely(error)) 2073e4f93234SChuck Lever goto out; 20745e7e5a0dSBryan Schumaker return nfs3_stat_to_errno(status); 2075e4f93234SChuck Lever } 2076e4f93234SChuck Lever 2077e4f93234SChuck Lever /* 2078e4f93234SChuck Lever * 3.3.18 FSSTAT3res 2079e4f93234SChuck Lever * 2080e4f93234SChuck Lever * struct FSSTAT3resok { 2081e4f93234SChuck Lever * post_op_attr obj_attributes; 2082e4f93234SChuck Lever * size3 tbytes; 2083e4f93234SChuck Lever * size3 fbytes; 2084e4f93234SChuck Lever * size3 abytes; 2085e4f93234SChuck Lever * size3 tfiles; 2086e4f93234SChuck Lever * size3 ffiles; 2087e4f93234SChuck Lever * size3 afiles; 2088e4f93234SChuck Lever * uint32 invarsec; 2089e4f93234SChuck Lever * }; 2090e4f93234SChuck Lever * 2091e4f93234SChuck Lever * struct FSSTAT3resfail { 2092e4f93234SChuck Lever * post_op_attr obj_attributes; 2093e4f93234SChuck Lever * }; 2094e4f93234SChuck Lever * 2095e4f93234SChuck Lever * union FSSTAT3res switch (nfsstat3 status) { 2096e4f93234SChuck Lever * case NFS3_OK: 2097e4f93234SChuck Lever * FSSTAT3resok resok; 2098e4f93234SChuck Lever * default: 2099e4f93234SChuck Lever * FSSTAT3resfail resfail; 2100e4f93234SChuck Lever * }; 2101e4f93234SChuck Lever */ 2102e4f93234SChuck Lever static int decode_fsstat3resok(struct xdr_stream *xdr, 2103e4f93234SChuck Lever struct nfs_fsstat *result) 2104e4f93234SChuck Lever { 2105e4f93234SChuck Lever __be32 *p; 2106e4f93234SChuck Lever 2107e4f93234SChuck Lever p = xdr_inline_decode(xdr, 8 * 6 + 4); 2108e4f93234SChuck Lever if (unlikely(p == NULL)) 2109e4f93234SChuck Lever goto out_overflow; 2110e4f93234SChuck Lever p = xdr_decode_size3(p, &result->tbytes); 2111e4f93234SChuck Lever p = xdr_decode_size3(p, &result->fbytes); 2112e4f93234SChuck Lever p = xdr_decode_size3(p, &result->abytes); 2113e4f93234SChuck Lever p = xdr_decode_size3(p, &result->tfiles); 2114e4f93234SChuck Lever p = xdr_decode_size3(p, &result->ffiles); 2115e4f93234SChuck Lever xdr_decode_size3(p, &result->afiles); 2116e4f93234SChuck Lever /* ignore invarsec */ 2117e4f93234SChuck Lever return 0; 2118e4f93234SChuck Lever out_overflow: 2119e4f93234SChuck Lever print_overflow_msg(__func__, xdr); 2120e4f93234SChuck Lever return -EIO; 2121e4f93234SChuck Lever } 2122e4f93234SChuck Lever 2123bf269551SChuck Lever static int nfs3_xdr_dec_fsstat3res(struct rpc_rqst *req, 2124bf269551SChuck Lever struct xdr_stream *xdr, 2125e4f93234SChuck Lever struct nfs_fsstat *result) 2126e4f93234SChuck Lever { 2127e4f93234SChuck Lever enum nfs_stat status; 2128e4f93234SChuck Lever int error; 2129e4f93234SChuck Lever 2130bf269551SChuck Lever error = decode_nfsstat3(xdr, &status); 2131e4f93234SChuck Lever if (unlikely(error)) 2132e4f93234SChuck Lever goto out; 2133bf269551SChuck Lever error = decode_post_op_attr(xdr, result->fattr); 2134e4f93234SChuck Lever if (unlikely(error)) 2135e4f93234SChuck Lever goto out; 2136e4f93234SChuck Lever if (status != NFS3_OK) 2137e4f93234SChuck Lever goto out_status; 2138bf269551SChuck Lever error = decode_fsstat3resok(xdr, result); 2139e4f93234SChuck Lever out: 2140e4f93234SChuck Lever return error; 2141e4f93234SChuck Lever out_status: 21425e7e5a0dSBryan Schumaker return nfs3_stat_to_errno(status); 2143e4f93234SChuck Lever } 2144e4f93234SChuck Lever 2145e4f93234SChuck Lever /* 2146e4f93234SChuck Lever * 3.3.19 FSINFO3res 2147e4f93234SChuck Lever * 2148e4f93234SChuck Lever * struct FSINFO3resok { 2149e4f93234SChuck Lever * post_op_attr obj_attributes; 2150e4f93234SChuck Lever * uint32 rtmax; 2151e4f93234SChuck Lever * uint32 rtpref; 2152e4f93234SChuck Lever * uint32 rtmult; 2153e4f93234SChuck Lever * uint32 wtmax; 2154e4f93234SChuck Lever * uint32 wtpref; 2155e4f93234SChuck Lever * uint32 wtmult; 2156e4f93234SChuck Lever * uint32 dtpref; 2157e4f93234SChuck Lever * size3 maxfilesize; 2158e4f93234SChuck Lever * nfstime3 time_delta; 2159e4f93234SChuck Lever * uint32 properties; 2160e4f93234SChuck Lever * }; 2161e4f93234SChuck Lever * 2162e4f93234SChuck Lever * struct FSINFO3resfail { 2163e4f93234SChuck Lever * post_op_attr obj_attributes; 2164e4f93234SChuck Lever * }; 2165e4f93234SChuck Lever * 2166e4f93234SChuck Lever * union FSINFO3res switch (nfsstat3 status) { 2167e4f93234SChuck Lever * case NFS3_OK: 2168e4f93234SChuck Lever * FSINFO3resok resok; 2169e4f93234SChuck Lever * default: 2170e4f93234SChuck Lever * FSINFO3resfail resfail; 2171e4f93234SChuck Lever * }; 2172e4f93234SChuck Lever */ 2173e4f93234SChuck Lever static int decode_fsinfo3resok(struct xdr_stream *xdr, 2174e4f93234SChuck Lever struct nfs_fsinfo *result) 2175e4f93234SChuck Lever { 2176e4f93234SChuck Lever __be32 *p; 2177e4f93234SChuck Lever 2178e4f93234SChuck Lever p = xdr_inline_decode(xdr, 4 * 7 + 8 + 8 + 4); 2179e4f93234SChuck Lever if (unlikely(p == NULL)) 2180e4f93234SChuck Lever goto out_overflow; 2181e4f93234SChuck Lever result->rtmax = be32_to_cpup(p++); 2182e4f93234SChuck Lever result->rtpref = be32_to_cpup(p++); 2183e4f93234SChuck Lever result->rtmult = be32_to_cpup(p++); 2184e4f93234SChuck Lever result->wtmax = be32_to_cpup(p++); 2185e4f93234SChuck Lever result->wtpref = be32_to_cpup(p++); 2186e4f93234SChuck Lever result->wtmult = be32_to_cpup(p++); 2187e4f93234SChuck Lever result->dtpref = be32_to_cpup(p++); 2188e4f93234SChuck Lever p = xdr_decode_size3(p, &result->maxfilesize); 2189f6048709SChuck Lever xdr_decode_nfstime3(p, &result->time_delta); 2190e4f93234SChuck Lever 2191e4f93234SChuck Lever /* ignore properties */ 2192e4f93234SChuck Lever result->lease_time = 0; 2193e4f93234SChuck Lever return 0; 2194e4f93234SChuck Lever out_overflow: 2195e4f93234SChuck Lever print_overflow_msg(__func__, xdr); 2196e4f93234SChuck Lever return -EIO; 2197e4f93234SChuck Lever } 2198e4f93234SChuck Lever 2199bf269551SChuck Lever static int nfs3_xdr_dec_fsinfo3res(struct rpc_rqst *req, 2200bf269551SChuck Lever struct xdr_stream *xdr, 2201e4f93234SChuck Lever struct nfs_fsinfo *result) 2202e4f93234SChuck Lever { 2203e4f93234SChuck Lever enum nfs_stat status; 2204e4f93234SChuck Lever int error; 2205e4f93234SChuck Lever 2206bf269551SChuck Lever error = decode_nfsstat3(xdr, &status); 2207e4f93234SChuck Lever if (unlikely(error)) 2208e4f93234SChuck Lever goto out; 2209bf269551SChuck Lever error = decode_post_op_attr(xdr, result->fattr); 2210e4f93234SChuck Lever if (unlikely(error)) 2211e4f93234SChuck Lever goto out; 2212e4f93234SChuck Lever if (status != NFS3_OK) 2213e4f93234SChuck Lever goto out_status; 2214bf269551SChuck Lever error = decode_fsinfo3resok(xdr, result); 2215e4f93234SChuck Lever out: 2216e4f93234SChuck Lever return error; 2217e4f93234SChuck Lever out_status: 22185e7e5a0dSBryan Schumaker return nfs3_stat_to_errno(status); 2219e4f93234SChuck Lever } 2220e4f93234SChuck Lever 2221e4f93234SChuck Lever /* 2222e4f93234SChuck Lever * 3.3.20 PATHCONF3res 2223e4f93234SChuck Lever * 2224e4f93234SChuck Lever * struct PATHCONF3resok { 2225e4f93234SChuck Lever * post_op_attr obj_attributes; 2226e4f93234SChuck Lever * uint32 linkmax; 2227e4f93234SChuck Lever * uint32 name_max; 2228e4f93234SChuck Lever * bool no_trunc; 2229e4f93234SChuck Lever * bool chown_restricted; 2230e4f93234SChuck Lever * bool case_insensitive; 2231e4f93234SChuck Lever * bool case_preserving; 2232e4f93234SChuck Lever * }; 2233e4f93234SChuck Lever * 2234e4f93234SChuck Lever * struct PATHCONF3resfail { 2235e4f93234SChuck Lever * post_op_attr obj_attributes; 2236e4f93234SChuck Lever * }; 2237e4f93234SChuck Lever * 2238e4f93234SChuck Lever * union PATHCONF3res switch (nfsstat3 status) { 2239e4f93234SChuck Lever * case NFS3_OK: 2240e4f93234SChuck Lever * PATHCONF3resok resok; 2241e4f93234SChuck Lever * default: 2242e4f93234SChuck Lever * PATHCONF3resfail resfail; 2243e4f93234SChuck Lever * }; 2244e4f93234SChuck Lever */ 2245e4f93234SChuck Lever static int decode_pathconf3resok(struct xdr_stream *xdr, 2246e4f93234SChuck Lever struct nfs_pathconf *result) 2247e4f93234SChuck Lever { 2248e4f93234SChuck Lever __be32 *p; 2249e4f93234SChuck Lever 2250e4f93234SChuck Lever p = xdr_inline_decode(xdr, 4 * 6); 2251e4f93234SChuck Lever if (unlikely(p == NULL)) 2252e4f93234SChuck Lever goto out_overflow; 2253e4f93234SChuck Lever result->max_link = be32_to_cpup(p++); 2254e4f93234SChuck Lever result->max_namelen = be32_to_cpup(p); 2255e4f93234SChuck Lever /* ignore remaining fields */ 2256e4f93234SChuck Lever return 0; 2257e4f93234SChuck Lever out_overflow: 2258e4f93234SChuck Lever print_overflow_msg(__func__, xdr); 2259e4f93234SChuck Lever return -EIO; 2260e4f93234SChuck Lever } 2261e4f93234SChuck Lever 2262bf269551SChuck Lever static int nfs3_xdr_dec_pathconf3res(struct rpc_rqst *req, 2263bf269551SChuck Lever struct xdr_stream *xdr, 2264e4f93234SChuck Lever struct nfs_pathconf *result) 2265e4f93234SChuck Lever { 2266e4f93234SChuck Lever enum nfs_stat status; 2267e4f93234SChuck Lever int error; 2268e4f93234SChuck Lever 2269bf269551SChuck Lever error = decode_nfsstat3(xdr, &status); 2270e4f93234SChuck Lever if (unlikely(error)) 2271e4f93234SChuck Lever goto out; 2272bf269551SChuck Lever error = decode_post_op_attr(xdr, result->fattr); 2273e4f93234SChuck Lever if (unlikely(error)) 2274e4f93234SChuck Lever goto out; 2275e4f93234SChuck Lever if (status != NFS3_OK) 2276e4f93234SChuck Lever goto out_status; 2277bf269551SChuck Lever error = decode_pathconf3resok(xdr, result); 2278e4f93234SChuck Lever out: 2279e4f93234SChuck Lever return error; 2280e4f93234SChuck Lever out_status: 22815e7e5a0dSBryan Schumaker return nfs3_stat_to_errno(status); 2282e4f93234SChuck Lever } 2283e4f93234SChuck Lever 2284e4f93234SChuck Lever /* 2285e4f93234SChuck Lever * 3.3.21 COMMIT3res 2286e4f93234SChuck Lever * 2287e4f93234SChuck Lever * struct COMMIT3resok { 2288e4f93234SChuck Lever * wcc_data file_wcc; 2289e4f93234SChuck Lever * writeverf3 verf; 2290e4f93234SChuck Lever * }; 2291e4f93234SChuck Lever * 2292e4f93234SChuck Lever * struct COMMIT3resfail { 2293e4f93234SChuck Lever * wcc_data file_wcc; 2294e4f93234SChuck Lever * }; 2295e4f93234SChuck Lever * 2296e4f93234SChuck Lever * union COMMIT3res switch (nfsstat3 status) { 2297e4f93234SChuck Lever * case NFS3_OK: 2298e4f93234SChuck Lever * COMMIT3resok resok; 2299e4f93234SChuck Lever * default: 2300e4f93234SChuck Lever * COMMIT3resfail resfail; 2301e4f93234SChuck Lever * }; 2302e4f93234SChuck Lever */ 2303bf269551SChuck Lever static int nfs3_xdr_dec_commit3res(struct rpc_rqst *req, 2304bf269551SChuck Lever struct xdr_stream *xdr, 23050b7c0153SFred Isaman struct nfs_commitres *result) 2306e4f93234SChuck Lever { 2307e4f93234SChuck Lever enum nfs_stat status; 2308e4f93234SChuck Lever int error; 2309e4f93234SChuck Lever 2310bf269551SChuck Lever error = decode_nfsstat3(xdr, &status); 2311e4f93234SChuck Lever if (unlikely(error)) 2312e4f93234SChuck Lever goto out; 2313bf269551SChuck Lever error = decode_wcc_data(xdr, result->fattr); 2314e4f93234SChuck Lever if (unlikely(error)) 2315e4f93234SChuck Lever goto out; 2316e4f93234SChuck Lever if (status != NFS3_OK) 2317e4f93234SChuck Lever goto out_status; 23182f2c63bcSTrond Myklebust error = decode_writeverf3(xdr, &result->verf->verifier); 2319e4f93234SChuck Lever out: 2320e4f93234SChuck Lever return error; 2321e4f93234SChuck Lever out_status: 23225e7e5a0dSBryan Schumaker return nfs3_stat_to_errno(status); 2323e4f93234SChuck Lever } 2324e4f93234SChuck Lever 2325b7fa0554SAndreas Gruenbacher #ifdef CONFIG_NFS_V3_ACL 2326b7fa0554SAndreas Gruenbacher 2327e4f93234SChuck Lever static inline int decode_getacl3resok(struct xdr_stream *xdr, 2328e4f93234SChuck Lever struct nfs3_getaclres *result) 2329e4f93234SChuck Lever { 2330e4f93234SChuck Lever struct posix_acl **acl; 2331e4f93234SChuck Lever unsigned int *aclcnt; 2332e4f93234SChuck Lever size_t hdrlen; 2333e4f93234SChuck Lever int error; 2334e4f93234SChuck Lever 2335e4f93234SChuck Lever error = decode_post_op_attr(xdr, result->fattr); 2336e4f93234SChuck Lever if (unlikely(error)) 2337e4f93234SChuck Lever goto out; 2338e4f93234SChuck Lever error = decode_uint32(xdr, &result->mask); 2339e4f93234SChuck Lever if (unlikely(error)) 2340e4f93234SChuck Lever goto out; 2341e4f93234SChuck Lever error = -EINVAL; 2342e4f93234SChuck Lever if (result->mask & ~(NFS_ACL|NFS_ACLCNT|NFS_DFACL|NFS_DFACLCNT)) 2343e4f93234SChuck Lever goto out; 2344e4f93234SChuck Lever 23451aecca3eSTrond Myklebust hdrlen = xdr_stream_pos(xdr); 2346e4f93234SChuck Lever 2347e4f93234SChuck Lever acl = NULL; 2348e4f93234SChuck Lever if (result->mask & NFS_ACL) 2349e4f93234SChuck Lever acl = &result->acl_access; 2350e4f93234SChuck Lever aclcnt = NULL; 2351e4f93234SChuck Lever if (result->mask & NFS_ACLCNT) 2352e4f93234SChuck Lever aclcnt = &result->acl_access_count; 2353e4f93234SChuck Lever error = nfsacl_decode(xdr->buf, hdrlen, aclcnt, acl); 2354e4f93234SChuck Lever if (unlikely(error <= 0)) 2355e4f93234SChuck Lever goto out; 2356e4f93234SChuck Lever 2357e4f93234SChuck Lever acl = NULL; 2358e4f93234SChuck Lever if (result->mask & NFS_DFACL) 2359e4f93234SChuck Lever acl = &result->acl_default; 2360e4f93234SChuck Lever aclcnt = NULL; 2361e4f93234SChuck Lever if (result->mask & NFS_DFACLCNT) 2362e4f93234SChuck Lever aclcnt = &result->acl_default_count; 2363e4f93234SChuck Lever error = nfsacl_decode(xdr->buf, hdrlen + error, aclcnt, acl); 2364e4f93234SChuck Lever if (unlikely(error <= 0)) 2365e4f93234SChuck Lever return error; 2366e4f93234SChuck Lever error = 0; 2367e4f93234SChuck Lever out: 2368e4f93234SChuck Lever return error; 2369e4f93234SChuck Lever } 2370e4f93234SChuck Lever 2371bf269551SChuck Lever static int nfs3_xdr_dec_getacl3res(struct rpc_rqst *req, 2372bf269551SChuck Lever struct xdr_stream *xdr, 2373e4f93234SChuck Lever struct nfs3_getaclres *result) 2374e4f93234SChuck Lever { 2375e4f93234SChuck Lever enum nfs_stat status; 2376e4f93234SChuck Lever int error; 2377e4f93234SChuck Lever 2378bf269551SChuck Lever error = decode_nfsstat3(xdr, &status); 2379e4f93234SChuck Lever if (unlikely(error)) 2380e4f93234SChuck Lever goto out; 2381e4f93234SChuck Lever if (status != NFS3_OK) 2382e4f93234SChuck Lever goto out_default; 2383bf269551SChuck Lever error = decode_getacl3resok(xdr, result); 2384e4f93234SChuck Lever out: 2385e4f93234SChuck Lever return error; 2386e4f93234SChuck Lever out_default: 23875e7e5a0dSBryan Schumaker return nfs3_stat_to_errno(status); 2388e4f93234SChuck Lever } 2389e4f93234SChuck Lever 2390bf269551SChuck Lever static int nfs3_xdr_dec_setacl3res(struct rpc_rqst *req, 2391bf269551SChuck Lever struct xdr_stream *xdr, 2392e4f93234SChuck Lever struct nfs_fattr *result) 2393e4f93234SChuck Lever { 2394e4f93234SChuck Lever enum nfs_stat status; 2395e4f93234SChuck Lever int error; 2396e4f93234SChuck Lever 2397bf269551SChuck Lever error = decode_nfsstat3(xdr, &status); 2398e4f93234SChuck Lever if (unlikely(error)) 2399e4f93234SChuck Lever goto out; 2400e4f93234SChuck Lever if (status != NFS3_OK) 2401e4f93234SChuck Lever goto out_default; 2402bf269551SChuck Lever error = decode_post_op_attr(xdr, result); 2403e4f93234SChuck Lever out: 2404e4f93234SChuck Lever return error; 2405e4f93234SChuck Lever out_default: 24065e7e5a0dSBryan Schumaker return nfs3_stat_to_errno(status); 2407e4f93234SChuck Lever } 2408e4f93234SChuck Lever 2409b7fa0554SAndreas Gruenbacher #endif /* CONFIG_NFS_V3_ACL */ 2410b7fa0554SAndreas Gruenbacher 24115e7e5a0dSBryan Schumaker 24125e7e5a0dSBryan Schumaker /* 24135e7e5a0dSBryan Schumaker * We need to translate between nfs status return values and 24145e7e5a0dSBryan Schumaker * the local errno values which may not be the same. 24155e7e5a0dSBryan Schumaker */ 24165e7e5a0dSBryan Schumaker static const struct { 24175e7e5a0dSBryan Schumaker int stat; 24185e7e5a0dSBryan Schumaker int errno; 24195e7e5a0dSBryan Schumaker } nfs_errtbl[] = { 24205e7e5a0dSBryan Schumaker { NFS_OK, 0 }, 24215e7e5a0dSBryan Schumaker { NFSERR_PERM, -EPERM }, 24225e7e5a0dSBryan Schumaker { NFSERR_NOENT, -ENOENT }, 24235e7e5a0dSBryan Schumaker { NFSERR_IO, -errno_NFSERR_IO}, 24245e7e5a0dSBryan Schumaker { NFSERR_NXIO, -ENXIO }, 24255e7e5a0dSBryan Schumaker /* { NFSERR_EAGAIN, -EAGAIN }, */ 24265e7e5a0dSBryan Schumaker { NFSERR_ACCES, -EACCES }, 24275e7e5a0dSBryan Schumaker { NFSERR_EXIST, -EEXIST }, 24285e7e5a0dSBryan Schumaker { NFSERR_XDEV, -EXDEV }, 24295e7e5a0dSBryan Schumaker { NFSERR_NODEV, -ENODEV }, 24305e7e5a0dSBryan Schumaker { NFSERR_NOTDIR, -ENOTDIR }, 24315e7e5a0dSBryan Schumaker { NFSERR_ISDIR, -EISDIR }, 24325e7e5a0dSBryan Schumaker { NFSERR_INVAL, -EINVAL }, 24335e7e5a0dSBryan Schumaker { NFSERR_FBIG, -EFBIG }, 24345e7e5a0dSBryan Schumaker { NFSERR_NOSPC, -ENOSPC }, 24355e7e5a0dSBryan Schumaker { NFSERR_ROFS, -EROFS }, 24365e7e5a0dSBryan Schumaker { NFSERR_MLINK, -EMLINK }, 24375e7e5a0dSBryan Schumaker { NFSERR_NAMETOOLONG, -ENAMETOOLONG }, 24385e7e5a0dSBryan Schumaker { NFSERR_NOTEMPTY, -ENOTEMPTY }, 24395e7e5a0dSBryan Schumaker { NFSERR_DQUOT, -EDQUOT }, 24405e7e5a0dSBryan Schumaker { NFSERR_STALE, -ESTALE }, 24415e7e5a0dSBryan Schumaker { NFSERR_REMOTE, -EREMOTE }, 24425e7e5a0dSBryan Schumaker #ifdef EWFLUSH 24435e7e5a0dSBryan Schumaker { NFSERR_WFLUSH, -EWFLUSH }, 24445e7e5a0dSBryan Schumaker #endif 24455e7e5a0dSBryan Schumaker { NFSERR_BADHANDLE, -EBADHANDLE }, 24465e7e5a0dSBryan Schumaker { NFSERR_NOT_SYNC, -ENOTSYNC }, 24475e7e5a0dSBryan Schumaker { NFSERR_BAD_COOKIE, -EBADCOOKIE }, 24485e7e5a0dSBryan Schumaker { NFSERR_NOTSUPP, -ENOTSUPP }, 24495e7e5a0dSBryan Schumaker { NFSERR_TOOSMALL, -ETOOSMALL }, 24505e7e5a0dSBryan Schumaker { NFSERR_SERVERFAULT, -EREMOTEIO }, 24515e7e5a0dSBryan Schumaker { NFSERR_BADTYPE, -EBADTYPE }, 24525e7e5a0dSBryan Schumaker { NFSERR_JUKEBOX, -EJUKEBOX }, 24535e7e5a0dSBryan Schumaker { -1, -EIO } 24545e7e5a0dSBryan Schumaker }; 24555e7e5a0dSBryan Schumaker 24565e7e5a0dSBryan Schumaker /** 24575e7e5a0dSBryan Schumaker * nfs3_stat_to_errno - convert an NFS status code to a local errno 24585e7e5a0dSBryan Schumaker * @status: NFS status code to convert 24595e7e5a0dSBryan Schumaker * 24605e7e5a0dSBryan Schumaker * Returns a local errno value, or -EIO if the NFS status code is 24615e7e5a0dSBryan Schumaker * not recognized. This function is used jointly by NFSv2 and NFSv3. 24625e7e5a0dSBryan Schumaker */ 24635e7e5a0dSBryan Schumaker static int nfs3_stat_to_errno(enum nfs_stat status) 24645e7e5a0dSBryan Schumaker { 24655e7e5a0dSBryan Schumaker int i; 24665e7e5a0dSBryan Schumaker 24675e7e5a0dSBryan Schumaker for (i = 0; nfs_errtbl[i].stat != -1; i++) { 24685e7e5a0dSBryan Schumaker if (nfs_errtbl[i].stat == (int)status) 24695e7e5a0dSBryan Schumaker return nfs_errtbl[i].errno; 24705e7e5a0dSBryan Schumaker } 24715e7e5a0dSBryan Schumaker dprintk("NFS: Unrecognized nfs status value: %u\n", status); 24725e7e5a0dSBryan Schumaker return nfs_errtbl[i].errno; 24735e7e5a0dSBryan Schumaker } 24745e7e5a0dSBryan Schumaker 24755e7e5a0dSBryan Schumaker 24761da177e4SLinus Torvalds #define PROC(proc, argtype, restype, timer) \ 24771da177e4SLinus Torvalds [NFS3PROC_##proc] = { \ 24781da177e4SLinus Torvalds .p_proc = NFS3PROC_##proc, \ 24799f06c719SChuck Lever .p_encode = (kxdreproc_t)nfs3_xdr_enc_##argtype##3args, \ 2480bf269551SChuck Lever .p_decode = (kxdrdproc_t)nfs3_xdr_dec_##restype##3res, \ 2481ad96b5b5SChuck Lever .p_arglen = NFS3_##argtype##args_sz, \ 2482f5fc3c50SChuck Lever .p_replen = NFS3_##restype##res_sz, \ 2483cc0175c1SChuck Lever .p_timer = timer, \ 2484cc0175c1SChuck Lever .p_statidx = NFS3PROC_##proc, \ 2485cc0175c1SChuck Lever .p_name = #proc, \ 24861da177e4SLinus Torvalds } 24871da177e4SLinus Torvalds 24881da177e4SLinus Torvalds struct rpc_procinfo nfs3_procedures[] = { 2489f5fc3c50SChuck Lever PROC(GETATTR, getattr, getattr, 1), 2490f5fc3c50SChuck Lever PROC(SETATTR, setattr, setattr, 0), 2491f5fc3c50SChuck Lever PROC(LOOKUP, lookup, lookup, 2), 2492f5fc3c50SChuck Lever PROC(ACCESS, access, access, 1), 2493f5fc3c50SChuck Lever PROC(READLINK, readlink, readlink, 3), 2494f5fc3c50SChuck Lever PROC(READ, read, read, 3), 2495f5fc3c50SChuck Lever PROC(WRITE, write, write, 4), 2496f5fc3c50SChuck Lever PROC(CREATE, create, create, 0), 2497f5fc3c50SChuck Lever PROC(MKDIR, mkdir, create, 0), 2498f5fc3c50SChuck Lever PROC(SYMLINK, symlink, create, 0), 2499f5fc3c50SChuck Lever PROC(MKNOD, mknod, create, 0), 2500f5fc3c50SChuck Lever PROC(REMOVE, remove, remove, 0), 2501f5fc3c50SChuck Lever PROC(RMDIR, lookup, setattr, 0), 2502f5fc3c50SChuck Lever PROC(RENAME, rename, rename, 0), 2503f5fc3c50SChuck Lever PROC(LINK, link, link, 0), 2504f5fc3c50SChuck Lever PROC(READDIR, readdir, readdir, 3), 2505f5fc3c50SChuck Lever PROC(READDIRPLUS, readdirplus, readdir, 3), 2506f5fc3c50SChuck Lever PROC(FSSTAT, getattr, fsstat, 0), 2507f5fc3c50SChuck Lever PROC(FSINFO, getattr, fsinfo, 0), 2508f5fc3c50SChuck Lever PROC(PATHCONF, getattr, pathconf, 0), 2509f5fc3c50SChuck Lever PROC(COMMIT, commit, commit, 5), 25101da177e4SLinus Torvalds }; 25111da177e4SLinus Torvalds 2512a613fa16STrond Myklebust const struct rpc_version nfs_version3 = { 25131da177e4SLinus Torvalds .number = 3, 2514e8c96f8cSTobias Klauser .nrprocs = ARRAY_SIZE(nfs3_procedures), 25151da177e4SLinus Torvalds .procs = nfs3_procedures 25161da177e4SLinus Torvalds }; 25171da177e4SLinus Torvalds 2518b7fa0554SAndreas Gruenbacher #ifdef CONFIG_NFS_V3_ACL 2519b7fa0554SAndreas Gruenbacher static struct rpc_procinfo nfs3_acl_procedures[] = { 2520b7fa0554SAndreas Gruenbacher [ACLPROC3_GETACL] = { 2521b7fa0554SAndreas Gruenbacher .p_proc = ACLPROC3_GETACL, 25229f06c719SChuck Lever .p_encode = (kxdreproc_t)nfs3_xdr_enc_getacl3args, 2523bf269551SChuck Lever .p_decode = (kxdrdproc_t)nfs3_xdr_dec_getacl3res, 25242bea90d4SChuck Lever .p_arglen = ACL3_getaclargs_sz, 25252bea90d4SChuck Lever .p_replen = ACL3_getaclres_sz, 2526b7fa0554SAndreas Gruenbacher .p_timer = 1, 2527cc0175c1SChuck Lever .p_name = "GETACL", 2528b7fa0554SAndreas Gruenbacher }, 2529b7fa0554SAndreas Gruenbacher [ACLPROC3_SETACL] = { 2530b7fa0554SAndreas Gruenbacher .p_proc = ACLPROC3_SETACL, 25319f06c719SChuck Lever .p_encode = (kxdreproc_t)nfs3_xdr_enc_setacl3args, 2532bf269551SChuck Lever .p_decode = (kxdrdproc_t)nfs3_xdr_dec_setacl3res, 25332bea90d4SChuck Lever .p_arglen = ACL3_setaclargs_sz, 25342bea90d4SChuck Lever .p_replen = ACL3_setaclres_sz, 2535b7fa0554SAndreas Gruenbacher .p_timer = 0, 2536cc0175c1SChuck Lever .p_name = "SETACL", 2537b7fa0554SAndreas Gruenbacher }, 2538b7fa0554SAndreas Gruenbacher }; 2539b7fa0554SAndreas Gruenbacher 2540a613fa16STrond Myklebust const struct rpc_version nfsacl_version3 = { 2541b7fa0554SAndreas Gruenbacher .number = 3, 2542b7fa0554SAndreas Gruenbacher .nrprocs = sizeof(nfs3_acl_procedures)/ 2543b7fa0554SAndreas Gruenbacher sizeof(nfs3_acl_procedures[0]), 2544b7fa0554SAndreas Gruenbacher .procs = nfs3_acl_procedures, 2545b7fa0554SAndreas Gruenbacher }; 2546b7fa0554SAndreas Gruenbacher #endif /* CONFIG_NFS_V3_ACL */ 2547