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; 59557a38daeSEric W. Biederman *p++ = cpu_to_be32(from_kuid(&init_user_ns, 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; 60157a38daeSEric W. Biederman *p++ = cpu_to_be32(from_kgid(&init_user_ns, 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++); 66057a38daeSEric W. Biederman fattr->uid = make_kuid(&init_user_ns, be32_to_cpup(p++)); 66157a38daeSEric W. Biederman if (!uid_valid(fattr->uid)) 66257a38daeSEric W. Biederman goto out_uid; 66357a38daeSEric W. Biederman fattr->gid = make_kgid(&init_user_ns, be32_to_cpup(p++)); 66457a38daeSEric W. Biederman if (!gid_valid(fattr->gid)) 66557a38daeSEric W. Biederman goto out_gid; 666f6048709SChuck Lever 667f6048709SChuck Lever p = xdr_decode_size3(p, &fattr->size); 668f6048709SChuck Lever p = xdr_decode_size3(p, &fattr->du.nfs3.used); 669f6048709SChuck Lever p = xdr_decode_specdata3(p, &fattr->rdev); 670f6048709SChuck Lever 671f6048709SChuck Lever p = xdr_decode_hyper(p, &fattr->fsid.major); 672f6048709SChuck Lever fattr->fsid.minor = 0; 673f6048709SChuck Lever 674f6048709SChuck Lever p = xdr_decode_fileid3(p, &fattr->fileid); 675f6048709SChuck Lever p = xdr_decode_nfstime3(p, &fattr->atime); 676f6048709SChuck Lever p = xdr_decode_nfstime3(p, &fattr->mtime); 677f6048709SChuck Lever xdr_decode_nfstime3(p, &fattr->ctime); 6783a1556e8STrond Myklebust fattr->change_attr = nfs_timespec_to_change_attr(&fattr->ctime); 679f6048709SChuck Lever 680f6048709SChuck Lever fattr->valid |= NFS_ATTR_FATTR_V3; 681e4f93234SChuck Lever return 0; 68257a38daeSEric W. Biederman out_uid: 68357a38daeSEric W. Biederman dprintk("NFS: returned invalid uid\n"); 68457a38daeSEric W. Biederman return -EINVAL; 68557a38daeSEric W. Biederman out_gid: 68657a38daeSEric W. Biederman dprintk("NFS: returned invalid gid\n"); 68757a38daeSEric W. Biederman return -EINVAL; 688e4f93234SChuck Lever out_overflow: 689e4f93234SChuck Lever print_overflow_msg(__func__, xdr); 690e4f93234SChuck Lever return -EIO; 691e4f93234SChuck Lever } 692e4f93234SChuck Lever 693e4f93234SChuck Lever /* 694e4f93234SChuck Lever * post_op_attr 695e4f93234SChuck Lever * 696e4f93234SChuck Lever * union post_op_attr switch (bool attributes_follow) { 697e4f93234SChuck Lever * case TRUE: 698e4f93234SChuck Lever * fattr3 attributes; 699e4f93234SChuck Lever * case FALSE: 700e4f93234SChuck Lever * void; 701e4f93234SChuck Lever * }; 702e4f93234SChuck Lever */ 703e4f93234SChuck Lever static int decode_post_op_attr(struct xdr_stream *xdr, struct nfs_fattr *fattr) 704e4f93234SChuck Lever { 705e4f93234SChuck Lever __be32 *p; 706e4f93234SChuck Lever 707e4f93234SChuck Lever p = xdr_inline_decode(xdr, 4); 708e4f93234SChuck Lever if (unlikely(p == NULL)) 709e4f93234SChuck Lever goto out_overflow; 710e4f93234SChuck Lever if (*p != xdr_zero) 711e4f93234SChuck Lever return decode_fattr3(xdr, fattr); 712e4f93234SChuck Lever return 0; 713e4f93234SChuck Lever out_overflow: 714e4f93234SChuck Lever print_overflow_msg(__func__, xdr); 715e4f93234SChuck Lever return -EIO; 716e4f93234SChuck Lever } 717e4f93234SChuck Lever 718e4f93234SChuck Lever /* 719e4f93234SChuck Lever * wcc_attr 720e4f93234SChuck Lever * struct wcc_attr { 721e4f93234SChuck Lever * size3 size; 722e4f93234SChuck Lever * nfstime3 mtime; 723e4f93234SChuck Lever * nfstime3 ctime; 724e4f93234SChuck Lever * }; 725e4f93234SChuck Lever */ 726e4f93234SChuck Lever static int decode_wcc_attr(struct xdr_stream *xdr, struct nfs_fattr *fattr) 727e4f93234SChuck Lever { 728e4f93234SChuck Lever __be32 *p; 729e4f93234SChuck Lever 730e4f93234SChuck Lever p = xdr_inline_decode(xdr, NFS3_wcc_attr_sz << 2); 731e4f93234SChuck Lever if (unlikely(p == NULL)) 732e4f93234SChuck Lever goto out_overflow; 733f6048709SChuck Lever 734f6048709SChuck Lever fattr->valid |= NFS_ATTR_FATTR_PRESIZE 7353a1556e8STrond Myklebust | NFS_ATTR_FATTR_PRECHANGE 736f6048709SChuck Lever | NFS_ATTR_FATTR_PREMTIME 737f6048709SChuck Lever | NFS_ATTR_FATTR_PRECTIME; 738f6048709SChuck Lever 739f6048709SChuck Lever p = xdr_decode_size3(p, &fattr->pre_size); 740f6048709SChuck Lever p = xdr_decode_nfstime3(p, &fattr->pre_mtime); 741f6048709SChuck Lever xdr_decode_nfstime3(p, &fattr->pre_ctime); 7423a1556e8STrond Myklebust fattr->pre_change_attr = nfs_timespec_to_change_attr(&fattr->pre_ctime); 743f6048709SChuck Lever 744e4f93234SChuck Lever return 0; 745e4f93234SChuck Lever out_overflow: 746e4f93234SChuck Lever print_overflow_msg(__func__, xdr); 747e4f93234SChuck Lever return -EIO; 748e4f93234SChuck Lever } 749e4f93234SChuck Lever 750e4f93234SChuck Lever /* 751e4f93234SChuck Lever * pre_op_attr 752e4f93234SChuck Lever * union pre_op_attr switch (bool attributes_follow) { 753e4f93234SChuck Lever * case TRUE: 754e4f93234SChuck Lever * wcc_attr attributes; 755e4f93234SChuck Lever * case FALSE: 756e4f93234SChuck Lever * void; 757e4f93234SChuck Lever * }; 758e4f93234SChuck Lever * 759e4f93234SChuck Lever * wcc_data 760e4f93234SChuck Lever * 761e4f93234SChuck Lever * struct wcc_data { 762e4f93234SChuck Lever * pre_op_attr before; 763e4f93234SChuck Lever * post_op_attr after; 764e4f93234SChuck Lever * }; 765e4f93234SChuck Lever */ 766e4f93234SChuck Lever static int decode_pre_op_attr(struct xdr_stream *xdr, struct nfs_fattr *fattr) 767e4f93234SChuck Lever { 768e4f93234SChuck Lever __be32 *p; 769e4f93234SChuck Lever 770e4f93234SChuck Lever p = xdr_inline_decode(xdr, 4); 771e4f93234SChuck Lever if (unlikely(p == NULL)) 772e4f93234SChuck Lever goto out_overflow; 773e4f93234SChuck Lever if (*p != xdr_zero) 774e4f93234SChuck Lever return decode_wcc_attr(xdr, fattr); 775e4f93234SChuck Lever return 0; 776e4f93234SChuck Lever out_overflow: 777e4f93234SChuck Lever print_overflow_msg(__func__, xdr); 778e4f93234SChuck Lever return -EIO; 779e4f93234SChuck Lever } 780e4f93234SChuck Lever 781e4f93234SChuck Lever static int decode_wcc_data(struct xdr_stream *xdr, struct nfs_fattr *fattr) 782e4f93234SChuck Lever { 783e4f93234SChuck Lever int error; 784e4f93234SChuck Lever 785e4f93234SChuck Lever error = decode_pre_op_attr(xdr, fattr); 786e4f93234SChuck Lever if (unlikely(error)) 787e4f93234SChuck Lever goto out; 788e4f93234SChuck Lever error = decode_post_op_attr(xdr, fattr); 789e4f93234SChuck Lever out: 790e4f93234SChuck Lever return error; 791e4f93234SChuck Lever } 792e4f93234SChuck Lever 793e4f93234SChuck Lever /* 794e4f93234SChuck Lever * post_op_fh3 795e4f93234SChuck Lever * 796e4f93234SChuck Lever * union post_op_fh3 switch (bool handle_follows) { 797e4f93234SChuck Lever * case TRUE: 798e4f93234SChuck Lever * nfs_fh3 handle; 799e4f93234SChuck Lever * case FALSE: 800e4f93234SChuck Lever * void; 801e4f93234SChuck Lever * }; 802e4f93234SChuck Lever */ 803e4f93234SChuck Lever static int decode_post_op_fh3(struct xdr_stream *xdr, struct nfs_fh *fh) 804e4f93234SChuck Lever { 805e4f93234SChuck Lever __be32 *p = xdr_inline_decode(xdr, 4); 806e4f93234SChuck Lever if (unlikely(p == NULL)) 807e4f93234SChuck Lever goto out_overflow; 808e4f93234SChuck Lever if (*p != xdr_zero) 809e4f93234SChuck Lever return decode_nfs_fh3(xdr, fh); 810e4f93234SChuck Lever zero_nfs_fh3(fh); 811e4f93234SChuck Lever return 0; 812e4f93234SChuck Lever out_overflow: 813e4f93234SChuck Lever print_overflow_msg(__func__, xdr); 814e4f93234SChuck Lever return -EIO; 815e4f93234SChuck Lever } 816e4f93234SChuck Lever 817e4f93234SChuck Lever /* 818d9c407b1SChuck Lever * diropargs3 819d9c407b1SChuck Lever * 820d9c407b1SChuck Lever * struct diropargs3 { 821d9c407b1SChuck Lever * nfs_fh3 dir; 822d9c407b1SChuck Lever * filename3 name; 823d9c407b1SChuck Lever * }; 824d9c407b1SChuck Lever */ 825d9c407b1SChuck Lever static void encode_diropargs3(struct xdr_stream *xdr, const struct nfs_fh *fh, 826d9c407b1SChuck Lever const char *name, u32 length) 827d9c407b1SChuck Lever { 828d9c407b1SChuck Lever encode_nfs_fh3(xdr, fh); 829d9c407b1SChuck Lever encode_filename3(xdr, name, length); 830d9c407b1SChuck Lever } 831d9c407b1SChuck Lever 832d9c407b1SChuck Lever 8331da177e4SLinus Torvalds /* 834499ff710SChuck Lever * NFSv3 XDR encode functions 835499ff710SChuck Lever * 836499ff710SChuck Lever * NFSv3 argument types are defined in section 3.3 of RFC 1813: 837499ff710SChuck Lever * "NFS Version 3 Protocol Specification". 8381da177e4SLinus Torvalds */ 8391da177e4SLinus Torvalds 8401da177e4SLinus Torvalds /* 841d9c407b1SChuck Lever * 3.3.1 GETATTR3args 842d9c407b1SChuck Lever * 843d9c407b1SChuck Lever * struct GETATTR3args { 844d9c407b1SChuck Lever * nfs_fh3 object; 845d9c407b1SChuck Lever * }; 846d9c407b1SChuck Lever */ 8479f06c719SChuck Lever static void nfs3_xdr_enc_getattr3args(struct rpc_rqst *req, 8489f06c719SChuck Lever struct xdr_stream *xdr, 849d9c407b1SChuck Lever const struct nfs_fh *fh) 850d9c407b1SChuck Lever { 8519f06c719SChuck Lever encode_nfs_fh3(xdr, fh); 852d9c407b1SChuck Lever } 853d9c407b1SChuck Lever 854d9c407b1SChuck Lever /* 855d9c407b1SChuck Lever * 3.3.2 SETATTR3args 856d9c407b1SChuck Lever * 857d9c407b1SChuck Lever * union sattrguard3 switch (bool check) { 858d9c407b1SChuck Lever * case TRUE: 859d9c407b1SChuck Lever * nfstime3 obj_ctime; 860d9c407b1SChuck Lever * case FALSE: 861d9c407b1SChuck Lever * void; 862d9c407b1SChuck Lever * }; 863d9c407b1SChuck Lever * 864d9c407b1SChuck Lever * struct SETATTR3args { 865d9c407b1SChuck Lever * nfs_fh3 object; 866d9c407b1SChuck Lever * sattr3 new_attributes; 867d9c407b1SChuck Lever * sattrguard3 guard; 868d9c407b1SChuck Lever * }; 869d9c407b1SChuck Lever */ 870d9c407b1SChuck Lever static void encode_sattrguard3(struct xdr_stream *xdr, 871d9c407b1SChuck Lever const struct nfs3_sattrargs *args) 872d9c407b1SChuck Lever { 873d9c407b1SChuck Lever __be32 *p; 874d9c407b1SChuck Lever 875d9c407b1SChuck Lever if (args->guard) { 876d9c407b1SChuck Lever p = xdr_reserve_space(xdr, 4 + 8); 877d9c407b1SChuck Lever *p++ = xdr_one; 8789d5a6434SChuck Lever xdr_encode_nfstime3(p, &args->guardtime); 879d9c407b1SChuck Lever } else { 880d9c407b1SChuck Lever p = xdr_reserve_space(xdr, 4); 881d9c407b1SChuck Lever *p = xdr_zero; 882d9c407b1SChuck Lever } 883d9c407b1SChuck Lever } 884d9c407b1SChuck Lever 8859f06c719SChuck Lever static void nfs3_xdr_enc_setattr3args(struct rpc_rqst *req, 8869f06c719SChuck Lever struct xdr_stream *xdr, 887d9c407b1SChuck Lever const struct nfs3_sattrargs *args) 888d9c407b1SChuck Lever { 8899f06c719SChuck Lever encode_nfs_fh3(xdr, args->fh); 8909f06c719SChuck Lever encode_sattr3(xdr, args->sattr); 8919f06c719SChuck Lever encode_sattrguard3(xdr, args); 892d9c407b1SChuck Lever } 893d9c407b1SChuck Lever 894d9c407b1SChuck Lever /* 895d9c407b1SChuck Lever * 3.3.3 LOOKUP3args 896d9c407b1SChuck Lever * 897d9c407b1SChuck Lever * struct LOOKUP3args { 898d9c407b1SChuck Lever * diropargs3 what; 899d9c407b1SChuck Lever * }; 900d9c407b1SChuck Lever */ 9019f06c719SChuck Lever static void nfs3_xdr_enc_lookup3args(struct rpc_rqst *req, 9029f06c719SChuck Lever struct xdr_stream *xdr, 903d9c407b1SChuck Lever const struct nfs3_diropargs *args) 904d9c407b1SChuck Lever { 9059f06c719SChuck Lever encode_diropargs3(xdr, args->fh, args->name, args->len); 906d9c407b1SChuck Lever } 907d9c407b1SChuck Lever 908d9c407b1SChuck Lever /* 909d9c407b1SChuck Lever * 3.3.4 ACCESS3args 910d9c407b1SChuck Lever * 911d9c407b1SChuck Lever * struct ACCESS3args { 912d9c407b1SChuck Lever * nfs_fh3 object; 913d9c407b1SChuck Lever * uint32 access; 914d9c407b1SChuck Lever * }; 915d9c407b1SChuck Lever */ 916d9c407b1SChuck Lever static void encode_access3args(struct xdr_stream *xdr, 917d9c407b1SChuck Lever const struct nfs3_accessargs *args) 918d9c407b1SChuck Lever { 919d9c407b1SChuck Lever encode_nfs_fh3(xdr, args->fh); 920d9c407b1SChuck Lever encode_uint32(xdr, args->access); 921d9c407b1SChuck Lever } 922d9c407b1SChuck Lever 9239f06c719SChuck Lever static void nfs3_xdr_enc_access3args(struct rpc_rqst *req, 9249f06c719SChuck Lever struct xdr_stream *xdr, 925d9c407b1SChuck Lever const struct nfs3_accessargs *args) 926d9c407b1SChuck Lever { 9279f06c719SChuck Lever encode_access3args(xdr, args); 928d9c407b1SChuck Lever } 929d9c407b1SChuck Lever 930d9c407b1SChuck Lever /* 931d9c407b1SChuck Lever * 3.3.5 READLINK3args 932d9c407b1SChuck Lever * 933d9c407b1SChuck Lever * struct READLINK3args { 934d9c407b1SChuck Lever * nfs_fh3 symlink; 935d9c407b1SChuck Lever * }; 936d9c407b1SChuck Lever */ 9379f06c719SChuck Lever static void nfs3_xdr_enc_readlink3args(struct rpc_rqst *req, 9389f06c719SChuck Lever struct xdr_stream *xdr, 939d9c407b1SChuck Lever const struct nfs3_readlinkargs *args) 940d9c407b1SChuck Lever { 9419f06c719SChuck Lever encode_nfs_fh3(xdr, args->fh); 942d9c407b1SChuck Lever prepare_reply_buffer(req, args->pages, args->pgbase, 943d9c407b1SChuck Lever args->pglen, NFS3_readlinkres_sz); 944d9c407b1SChuck Lever } 945d9c407b1SChuck Lever 946d9c407b1SChuck Lever /* 947d9c407b1SChuck Lever * 3.3.6 READ3args 948d9c407b1SChuck Lever * 949d9c407b1SChuck Lever * struct READ3args { 950d9c407b1SChuck Lever * nfs_fh3 file; 951d9c407b1SChuck Lever * offset3 offset; 952d9c407b1SChuck Lever * count3 count; 953d9c407b1SChuck Lever * }; 954d9c407b1SChuck Lever */ 955d9c407b1SChuck Lever static void encode_read3args(struct xdr_stream *xdr, 9563c6b899cSAnna Schumaker const struct nfs_pgio_args *args) 957d9c407b1SChuck Lever { 958d9c407b1SChuck Lever __be32 *p; 959d9c407b1SChuck Lever 960d9c407b1SChuck Lever encode_nfs_fh3(xdr, args->fh); 961d9c407b1SChuck Lever 962d9c407b1SChuck Lever p = xdr_reserve_space(xdr, 8 + 4); 963d9c407b1SChuck Lever p = xdr_encode_hyper(p, args->offset); 964d9c407b1SChuck Lever *p = cpu_to_be32(args->count); 965d9c407b1SChuck Lever } 966d9c407b1SChuck Lever 9679f06c719SChuck Lever static void nfs3_xdr_enc_read3args(struct rpc_rqst *req, 9689f06c719SChuck Lever struct xdr_stream *xdr, 9693c6b899cSAnna Schumaker const struct nfs_pgio_args *args) 970d9c407b1SChuck Lever { 9719f06c719SChuck Lever encode_read3args(xdr, args); 972d9c407b1SChuck Lever prepare_reply_buffer(req, args->pages, args->pgbase, 973d9c407b1SChuck Lever args->count, NFS3_readres_sz); 974d9c407b1SChuck Lever req->rq_rcv_buf.flags |= XDRBUF_READ; 975d9c407b1SChuck Lever } 976d9c407b1SChuck Lever 977d9c407b1SChuck Lever /* 978d9c407b1SChuck Lever * 3.3.7 WRITE3args 979d9c407b1SChuck Lever * 980d9c407b1SChuck Lever * enum stable_how { 981d9c407b1SChuck Lever * UNSTABLE = 0, 982d9c407b1SChuck Lever * DATA_SYNC = 1, 983d9c407b1SChuck Lever * FILE_SYNC = 2 984d9c407b1SChuck Lever * }; 985d9c407b1SChuck Lever * 986d9c407b1SChuck Lever * struct WRITE3args { 987d9c407b1SChuck Lever * nfs_fh3 file; 988d9c407b1SChuck Lever * offset3 offset; 989d9c407b1SChuck Lever * count3 count; 990d9c407b1SChuck Lever * stable_how stable; 991d9c407b1SChuck Lever * opaque data<>; 992d9c407b1SChuck Lever * }; 993d9c407b1SChuck Lever */ 994d9c407b1SChuck Lever static void encode_write3args(struct xdr_stream *xdr, 9953c6b899cSAnna Schumaker const struct nfs_pgio_args *args) 996d9c407b1SChuck Lever { 997d9c407b1SChuck Lever __be32 *p; 998d9c407b1SChuck Lever 999d9c407b1SChuck Lever encode_nfs_fh3(xdr, args->fh); 1000d9c407b1SChuck Lever 1001d9c407b1SChuck Lever p = xdr_reserve_space(xdr, 8 + 4 + 4 + 4); 1002d9c407b1SChuck Lever p = xdr_encode_hyper(p, args->offset); 1003d9c407b1SChuck Lever *p++ = cpu_to_be32(args->count); 1004d9c407b1SChuck Lever *p++ = cpu_to_be32(args->stable); 1005d9c407b1SChuck Lever *p = cpu_to_be32(args->count); 1006d9c407b1SChuck Lever xdr_write_pages(xdr, args->pages, args->pgbase, args->count); 1007d9c407b1SChuck Lever } 1008d9c407b1SChuck Lever 10099f06c719SChuck Lever static void nfs3_xdr_enc_write3args(struct rpc_rqst *req, 10109f06c719SChuck Lever struct xdr_stream *xdr, 10113c6b899cSAnna Schumaker const struct nfs_pgio_args *args) 1012d9c407b1SChuck Lever { 10139f06c719SChuck Lever encode_write3args(xdr, args); 10149f06c719SChuck Lever xdr->buf->flags |= XDRBUF_WRITE; 1015d9c407b1SChuck Lever } 1016d9c407b1SChuck Lever 1017d9c407b1SChuck Lever /* 1018d9c407b1SChuck Lever * 3.3.8 CREATE3args 1019d9c407b1SChuck Lever * 1020d9c407b1SChuck Lever * enum createmode3 { 1021d9c407b1SChuck Lever * UNCHECKED = 0, 1022d9c407b1SChuck Lever * GUARDED = 1, 1023d9c407b1SChuck Lever * EXCLUSIVE = 2 1024d9c407b1SChuck Lever * }; 1025d9c407b1SChuck Lever * 1026d9c407b1SChuck Lever * union createhow3 switch (createmode3 mode) { 1027d9c407b1SChuck Lever * case UNCHECKED: 1028d9c407b1SChuck Lever * case GUARDED: 1029d9c407b1SChuck Lever * sattr3 obj_attributes; 1030d9c407b1SChuck Lever * case EXCLUSIVE: 1031d9c407b1SChuck Lever * createverf3 verf; 1032d9c407b1SChuck Lever * }; 1033d9c407b1SChuck Lever * 1034d9c407b1SChuck Lever * struct CREATE3args { 1035d9c407b1SChuck Lever * diropargs3 where; 1036d9c407b1SChuck Lever * createhow3 how; 1037d9c407b1SChuck Lever * }; 1038d9c407b1SChuck Lever */ 1039d9c407b1SChuck Lever static void encode_createhow3(struct xdr_stream *xdr, 1040d9c407b1SChuck Lever const struct nfs3_createargs *args) 1041d9c407b1SChuck Lever { 1042d9c407b1SChuck Lever encode_uint32(xdr, args->createmode); 1043d9c407b1SChuck Lever switch (args->createmode) { 1044d9c407b1SChuck Lever case NFS3_CREATE_UNCHECKED: 1045d9c407b1SChuck Lever case NFS3_CREATE_GUARDED: 1046d9c407b1SChuck Lever encode_sattr3(xdr, args->sattr); 1047d9c407b1SChuck Lever break; 1048d9c407b1SChuck Lever case NFS3_CREATE_EXCLUSIVE: 1049d9c407b1SChuck Lever encode_createverf3(xdr, args->verifier); 1050d9c407b1SChuck Lever break; 1051d9c407b1SChuck Lever default: 1052d9c407b1SChuck Lever BUG(); 1053d9c407b1SChuck Lever } 1054d9c407b1SChuck Lever } 1055d9c407b1SChuck Lever 10569f06c719SChuck Lever static void nfs3_xdr_enc_create3args(struct rpc_rqst *req, 10579f06c719SChuck Lever struct xdr_stream *xdr, 1058d9c407b1SChuck Lever const struct nfs3_createargs *args) 1059d9c407b1SChuck Lever { 10609f06c719SChuck Lever encode_diropargs3(xdr, args->fh, args->name, args->len); 10619f06c719SChuck Lever encode_createhow3(xdr, args); 1062d9c407b1SChuck Lever } 1063d9c407b1SChuck Lever 1064d9c407b1SChuck Lever /* 1065d9c407b1SChuck Lever * 3.3.9 MKDIR3args 1066d9c407b1SChuck Lever * 1067d9c407b1SChuck Lever * struct MKDIR3args { 1068d9c407b1SChuck Lever * diropargs3 where; 1069d9c407b1SChuck Lever * sattr3 attributes; 1070d9c407b1SChuck Lever * }; 1071d9c407b1SChuck Lever */ 10729f06c719SChuck Lever static void nfs3_xdr_enc_mkdir3args(struct rpc_rqst *req, 10739f06c719SChuck Lever struct xdr_stream *xdr, 1074d9c407b1SChuck Lever const struct nfs3_mkdirargs *args) 1075d9c407b1SChuck Lever { 10769f06c719SChuck Lever encode_diropargs3(xdr, args->fh, args->name, args->len); 10779f06c719SChuck Lever encode_sattr3(xdr, args->sattr); 1078d9c407b1SChuck Lever } 1079d9c407b1SChuck Lever 1080d9c407b1SChuck Lever /* 1081d9c407b1SChuck Lever * 3.3.10 SYMLINK3args 1082d9c407b1SChuck Lever * 1083d9c407b1SChuck Lever * struct symlinkdata3 { 1084d9c407b1SChuck Lever * sattr3 symlink_attributes; 1085d9c407b1SChuck Lever * nfspath3 symlink_data; 1086d9c407b1SChuck Lever * }; 1087d9c407b1SChuck Lever * 1088d9c407b1SChuck Lever * struct SYMLINK3args { 1089d9c407b1SChuck Lever * diropargs3 where; 1090d9c407b1SChuck Lever * symlinkdata3 symlink; 1091d9c407b1SChuck Lever * }; 1092d9c407b1SChuck Lever */ 1093d9c407b1SChuck Lever static void encode_symlinkdata3(struct xdr_stream *xdr, 1094d9c407b1SChuck Lever const struct nfs3_symlinkargs *args) 1095d9c407b1SChuck Lever { 1096d9c407b1SChuck Lever encode_sattr3(xdr, args->sattr); 1097d9c407b1SChuck Lever encode_nfspath3(xdr, args->pages, args->pathlen); 1098d9c407b1SChuck Lever } 1099d9c407b1SChuck Lever 11009f06c719SChuck Lever static void nfs3_xdr_enc_symlink3args(struct rpc_rqst *req, 11019f06c719SChuck Lever struct xdr_stream *xdr, 1102d9c407b1SChuck Lever const struct nfs3_symlinkargs *args) 1103d9c407b1SChuck Lever { 11049f06c719SChuck Lever encode_diropargs3(xdr, args->fromfh, args->fromname, args->fromlen); 11059f06c719SChuck Lever encode_symlinkdata3(xdr, args); 1106d9c407b1SChuck Lever } 1107d9c407b1SChuck Lever 1108d9c407b1SChuck Lever /* 1109d9c407b1SChuck Lever * 3.3.11 MKNOD3args 1110d9c407b1SChuck Lever * 1111d9c407b1SChuck Lever * struct devicedata3 { 1112d9c407b1SChuck Lever * sattr3 dev_attributes; 1113d9c407b1SChuck Lever * specdata3 spec; 1114d9c407b1SChuck Lever * }; 1115d9c407b1SChuck Lever * 1116d9c407b1SChuck Lever * union mknoddata3 switch (ftype3 type) { 1117d9c407b1SChuck Lever * case NF3CHR: 1118d9c407b1SChuck Lever * case NF3BLK: 1119d9c407b1SChuck Lever * devicedata3 device; 1120d9c407b1SChuck Lever * case NF3SOCK: 1121d9c407b1SChuck Lever * case NF3FIFO: 1122d9c407b1SChuck Lever * sattr3 pipe_attributes; 1123d9c407b1SChuck Lever * default: 1124d9c407b1SChuck Lever * void; 1125d9c407b1SChuck Lever * }; 1126d9c407b1SChuck Lever * 1127d9c407b1SChuck Lever * struct MKNOD3args { 1128d9c407b1SChuck Lever * diropargs3 where; 1129d9c407b1SChuck Lever * mknoddata3 what; 1130d9c407b1SChuck Lever * }; 1131d9c407b1SChuck Lever */ 1132d9c407b1SChuck Lever static void encode_devicedata3(struct xdr_stream *xdr, 1133d9c407b1SChuck Lever const struct nfs3_mknodargs *args) 1134d9c407b1SChuck Lever { 1135d9c407b1SChuck Lever encode_sattr3(xdr, args->sattr); 1136d9c407b1SChuck Lever encode_specdata3(xdr, args->rdev); 1137d9c407b1SChuck Lever } 1138d9c407b1SChuck Lever 1139d9c407b1SChuck Lever static void encode_mknoddata3(struct xdr_stream *xdr, 1140d9c407b1SChuck Lever const struct nfs3_mknodargs *args) 1141d9c407b1SChuck Lever { 1142d9c407b1SChuck Lever encode_ftype3(xdr, args->type); 1143d9c407b1SChuck Lever switch (args->type) { 1144d9c407b1SChuck Lever case NF3CHR: 1145d9c407b1SChuck Lever case NF3BLK: 1146d9c407b1SChuck Lever encode_devicedata3(xdr, args); 1147d9c407b1SChuck Lever break; 1148d9c407b1SChuck Lever case NF3SOCK: 1149d9c407b1SChuck Lever case NF3FIFO: 1150d9c407b1SChuck Lever encode_sattr3(xdr, args->sattr); 1151d9c407b1SChuck Lever break; 1152d9c407b1SChuck Lever case NF3REG: 1153d9c407b1SChuck Lever case NF3DIR: 1154d9c407b1SChuck Lever break; 1155d9c407b1SChuck Lever default: 1156d9c407b1SChuck Lever BUG(); 1157d9c407b1SChuck Lever } 1158d9c407b1SChuck Lever } 1159d9c407b1SChuck Lever 11609f06c719SChuck Lever static void nfs3_xdr_enc_mknod3args(struct rpc_rqst *req, 11619f06c719SChuck Lever struct xdr_stream *xdr, 1162d9c407b1SChuck Lever const struct nfs3_mknodargs *args) 1163d9c407b1SChuck Lever { 11649f06c719SChuck Lever encode_diropargs3(xdr, args->fh, args->name, args->len); 11659f06c719SChuck Lever encode_mknoddata3(xdr, args); 1166d9c407b1SChuck Lever } 1167d9c407b1SChuck Lever 1168d9c407b1SChuck Lever /* 1169d9c407b1SChuck Lever * 3.3.12 REMOVE3args 1170d9c407b1SChuck Lever * 1171d9c407b1SChuck Lever * struct REMOVE3args { 1172d9c407b1SChuck Lever * diropargs3 object; 1173d9c407b1SChuck Lever * }; 1174d9c407b1SChuck Lever */ 11759f06c719SChuck Lever static void nfs3_xdr_enc_remove3args(struct rpc_rqst *req, 11769f06c719SChuck Lever struct xdr_stream *xdr, 1177d9c407b1SChuck Lever const struct nfs_removeargs *args) 1178d9c407b1SChuck Lever { 11799f06c719SChuck Lever encode_diropargs3(xdr, args->fh, args->name.name, args->name.len); 1180d9c407b1SChuck Lever } 1181d9c407b1SChuck Lever 1182d9c407b1SChuck Lever /* 1183d9c407b1SChuck Lever * 3.3.14 RENAME3args 1184d9c407b1SChuck Lever * 1185d9c407b1SChuck Lever * struct RENAME3args { 1186d9c407b1SChuck Lever * diropargs3 from; 1187d9c407b1SChuck Lever * diropargs3 to; 1188d9c407b1SChuck Lever * }; 1189d9c407b1SChuck Lever */ 11909f06c719SChuck Lever static void nfs3_xdr_enc_rename3args(struct rpc_rqst *req, 11919f06c719SChuck Lever struct xdr_stream *xdr, 1192d9c407b1SChuck Lever const struct nfs_renameargs *args) 1193d9c407b1SChuck Lever { 1194d9c407b1SChuck Lever const struct qstr *old = args->old_name; 1195d9c407b1SChuck Lever const struct qstr *new = args->new_name; 1196d9c407b1SChuck Lever 11979f06c719SChuck Lever encode_diropargs3(xdr, args->old_dir, old->name, old->len); 11989f06c719SChuck Lever encode_diropargs3(xdr, args->new_dir, new->name, new->len); 1199d9c407b1SChuck Lever } 1200d9c407b1SChuck Lever 1201d9c407b1SChuck Lever /* 1202d9c407b1SChuck Lever * 3.3.15 LINK3args 1203d9c407b1SChuck Lever * 1204d9c407b1SChuck Lever * struct LINK3args { 1205d9c407b1SChuck Lever * nfs_fh3 file; 1206d9c407b1SChuck Lever * diropargs3 link; 1207d9c407b1SChuck Lever * }; 1208d9c407b1SChuck Lever */ 12099f06c719SChuck Lever static void nfs3_xdr_enc_link3args(struct rpc_rqst *req, 12109f06c719SChuck Lever struct xdr_stream *xdr, 1211d9c407b1SChuck Lever const struct nfs3_linkargs *args) 1212d9c407b1SChuck Lever { 12139f06c719SChuck Lever encode_nfs_fh3(xdr, args->fromfh); 12149f06c719SChuck Lever encode_diropargs3(xdr, args->tofh, args->toname, args->tolen); 1215d9c407b1SChuck Lever } 1216d9c407b1SChuck Lever 1217d9c407b1SChuck Lever /* 1218d9c407b1SChuck Lever * 3.3.16 READDIR3args 1219d9c407b1SChuck Lever * 1220d9c407b1SChuck Lever * struct READDIR3args { 1221d9c407b1SChuck Lever * nfs_fh3 dir; 1222d9c407b1SChuck Lever * cookie3 cookie; 1223d9c407b1SChuck Lever * cookieverf3 cookieverf; 1224d9c407b1SChuck Lever * count3 count; 1225d9c407b1SChuck Lever * }; 1226d9c407b1SChuck Lever */ 1227d9c407b1SChuck Lever static void encode_readdir3args(struct xdr_stream *xdr, 1228d9c407b1SChuck Lever const struct nfs3_readdirargs *args) 1229d9c407b1SChuck Lever { 1230d9c407b1SChuck Lever __be32 *p; 1231d9c407b1SChuck Lever 1232d9c407b1SChuck Lever encode_nfs_fh3(xdr, args->fh); 1233d9c407b1SChuck Lever 1234d9c407b1SChuck Lever p = xdr_reserve_space(xdr, 8 + NFS3_COOKIEVERFSIZE + 4); 1235d9c407b1SChuck Lever p = xdr_encode_cookie3(p, args->cookie); 1236d9c407b1SChuck Lever p = xdr_encode_cookieverf3(p, args->verf); 1237d9c407b1SChuck Lever *p = cpu_to_be32(args->count); 1238d9c407b1SChuck Lever } 1239d9c407b1SChuck Lever 12409f06c719SChuck Lever static void nfs3_xdr_enc_readdir3args(struct rpc_rqst *req, 12419f06c719SChuck Lever struct xdr_stream *xdr, 1242d9c407b1SChuck Lever const struct nfs3_readdirargs *args) 1243d9c407b1SChuck Lever { 12449f06c719SChuck Lever encode_readdir3args(xdr, args); 1245d9c407b1SChuck Lever prepare_reply_buffer(req, args->pages, 0, 1246d9c407b1SChuck Lever args->count, NFS3_readdirres_sz); 1247d9c407b1SChuck Lever } 1248d9c407b1SChuck Lever 1249d9c407b1SChuck Lever /* 1250d9c407b1SChuck Lever * 3.3.17 READDIRPLUS3args 1251d9c407b1SChuck Lever * 1252d9c407b1SChuck Lever * struct READDIRPLUS3args { 1253d9c407b1SChuck Lever * nfs_fh3 dir; 1254d9c407b1SChuck Lever * cookie3 cookie; 1255d9c407b1SChuck Lever * cookieverf3 cookieverf; 1256d9c407b1SChuck Lever * count3 dircount; 1257d9c407b1SChuck Lever * count3 maxcount; 1258d9c407b1SChuck Lever * }; 1259d9c407b1SChuck Lever */ 1260d9c407b1SChuck Lever static void encode_readdirplus3args(struct xdr_stream *xdr, 1261d9c407b1SChuck Lever const struct nfs3_readdirargs *args) 1262d9c407b1SChuck Lever { 1263d9c407b1SChuck Lever __be32 *p; 1264d9c407b1SChuck Lever 1265d9c407b1SChuck Lever encode_nfs_fh3(xdr, args->fh); 1266d9c407b1SChuck Lever 1267d9c407b1SChuck Lever p = xdr_reserve_space(xdr, 8 + NFS3_COOKIEVERFSIZE + 4 + 4); 1268d9c407b1SChuck Lever p = xdr_encode_cookie3(p, args->cookie); 1269d9c407b1SChuck Lever p = xdr_encode_cookieverf3(p, args->verf); 1270d9c407b1SChuck Lever 1271d9c407b1SChuck Lever /* 1272d9c407b1SChuck Lever * readdirplus: need dircount + buffer size. 1273d9c407b1SChuck Lever * We just make sure we make dircount big enough 1274d9c407b1SChuck Lever */ 1275d9c407b1SChuck Lever *p++ = cpu_to_be32(args->count >> 3); 1276d9c407b1SChuck Lever 1277d9c407b1SChuck Lever *p = cpu_to_be32(args->count); 1278d9c407b1SChuck Lever } 1279d9c407b1SChuck Lever 12809f06c719SChuck Lever static void nfs3_xdr_enc_readdirplus3args(struct rpc_rqst *req, 12819f06c719SChuck Lever struct xdr_stream *xdr, 1282d9c407b1SChuck Lever const struct nfs3_readdirargs *args) 1283d9c407b1SChuck Lever { 12849f06c719SChuck Lever encode_readdirplus3args(xdr, args); 1285d9c407b1SChuck Lever prepare_reply_buffer(req, args->pages, 0, 1286d9c407b1SChuck Lever args->count, NFS3_readdirres_sz); 1287d9c407b1SChuck Lever } 1288d9c407b1SChuck Lever 1289d9c407b1SChuck Lever /* 1290d9c407b1SChuck Lever * 3.3.21 COMMIT3args 1291d9c407b1SChuck Lever * 1292d9c407b1SChuck Lever * struct COMMIT3args { 1293d9c407b1SChuck Lever * nfs_fh3 file; 1294d9c407b1SChuck Lever * offset3 offset; 1295d9c407b1SChuck Lever * count3 count; 1296d9c407b1SChuck Lever * }; 1297d9c407b1SChuck Lever */ 1298d9c407b1SChuck Lever static void encode_commit3args(struct xdr_stream *xdr, 12990b7c0153SFred Isaman const struct nfs_commitargs *args) 1300d9c407b1SChuck Lever { 1301d9c407b1SChuck Lever __be32 *p; 1302d9c407b1SChuck Lever 1303d9c407b1SChuck Lever encode_nfs_fh3(xdr, args->fh); 1304d9c407b1SChuck Lever 1305d9c407b1SChuck Lever p = xdr_reserve_space(xdr, 8 + 4); 1306d9c407b1SChuck Lever p = xdr_encode_hyper(p, args->offset); 1307d9c407b1SChuck Lever *p = cpu_to_be32(args->count); 1308d9c407b1SChuck Lever } 1309d9c407b1SChuck Lever 13109f06c719SChuck Lever static void nfs3_xdr_enc_commit3args(struct rpc_rqst *req, 13119f06c719SChuck Lever struct xdr_stream *xdr, 13120b7c0153SFred Isaman const struct nfs_commitargs *args) 1313d9c407b1SChuck Lever { 13149f06c719SChuck Lever encode_commit3args(xdr, args); 1315d9c407b1SChuck Lever } 1316d9c407b1SChuck Lever 1317b7fa0554SAndreas Gruenbacher #ifdef CONFIG_NFS_V3_ACL 1318b7fa0554SAndreas Gruenbacher 13199f06c719SChuck Lever static void nfs3_xdr_enc_getacl3args(struct rpc_rqst *req, 13209f06c719SChuck Lever struct xdr_stream *xdr, 1321d9c407b1SChuck Lever const struct nfs3_getaclargs *args) 1322d9c407b1SChuck Lever { 13239f06c719SChuck Lever encode_nfs_fh3(xdr, args->fh); 13249f06c719SChuck Lever encode_uint32(xdr, args->mask); 1325d9c407b1SChuck Lever if (args->mask & (NFS_ACL | NFS_DFACL)) 1326d9c407b1SChuck Lever prepare_reply_buffer(req, args->pages, 0, 1327d9c407b1SChuck Lever NFSACL_MAXPAGES << PAGE_SHIFT, 1328d9c407b1SChuck Lever ACL3_getaclres_sz); 1329d9c407b1SChuck Lever } 1330d9c407b1SChuck Lever 13319f06c719SChuck Lever static void nfs3_xdr_enc_setacl3args(struct rpc_rqst *req, 13329f06c719SChuck Lever struct xdr_stream *xdr, 1333d9c407b1SChuck Lever const struct nfs3_setaclargs *args) 1334d9c407b1SChuck Lever { 1335d9c407b1SChuck Lever unsigned int base; 1336d9c407b1SChuck Lever int error; 1337d9c407b1SChuck Lever 13389f06c719SChuck Lever encode_nfs_fh3(xdr, NFS_FH(args->inode)); 13399f06c719SChuck Lever encode_uint32(xdr, args->mask); 1340d9c407b1SChuck Lever 1341d9c407b1SChuck Lever base = req->rq_slen; 1342ee5dc773SChuck Lever if (args->npages != 0) 1343ee5dc773SChuck Lever xdr_write_pages(xdr, args->pages, 0, args->len); 1344ee5dc773SChuck Lever else 1345ee5dc773SChuck Lever xdr_reserve_space(xdr, NFS_ACL_INLINE_BUFSIZE); 1346ee5dc773SChuck Lever 13479f06c719SChuck Lever error = nfsacl_encode(xdr->buf, base, args->inode, 1348d9c407b1SChuck Lever (args->mask & NFS_ACL) ? 1349d9c407b1SChuck Lever args->acl_access : NULL, 1, 0); 13507fc38846STrond Myklebust /* FIXME: this is just broken */ 1351d9c407b1SChuck Lever BUG_ON(error < 0); 13529f06c719SChuck Lever error = nfsacl_encode(xdr->buf, base + error, args->inode, 1353d9c407b1SChuck Lever (args->mask & NFS_DFACL) ? 1354d9c407b1SChuck Lever args->acl_default : NULL, 1, 1355d9c407b1SChuck Lever NFS_ACL_DEFAULT); 1356d9c407b1SChuck Lever BUG_ON(error < 0); 1357d9c407b1SChuck Lever } 1358d9c407b1SChuck Lever 1359b7fa0554SAndreas Gruenbacher #endif /* CONFIG_NFS_V3_ACL */ 1360b7fa0554SAndreas Gruenbacher 13611da177e4SLinus Torvalds /* 1362b2cdd9c9SChuck Lever * NFSv3 XDR decode functions 1363b2cdd9c9SChuck Lever * 1364b2cdd9c9SChuck Lever * NFSv3 result types are defined in section 3.3 of RFC 1813: 1365b2cdd9c9SChuck Lever * "NFS Version 3 Protocol Specification". 13661da177e4SLinus Torvalds */ 13671da177e4SLinus Torvalds 13681da177e4SLinus Torvalds /* 1369e4f93234SChuck Lever * 3.3.1 GETATTR3res 1370e4f93234SChuck Lever * 1371e4f93234SChuck Lever * struct GETATTR3resok { 1372e4f93234SChuck Lever * fattr3 obj_attributes; 1373e4f93234SChuck Lever * }; 1374e4f93234SChuck Lever * 1375e4f93234SChuck Lever * union GETATTR3res switch (nfsstat3 status) { 1376e4f93234SChuck Lever * case NFS3_OK: 1377e4f93234SChuck Lever * GETATTR3resok resok; 1378e4f93234SChuck Lever * default: 1379e4f93234SChuck Lever * void; 1380e4f93234SChuck Lever * }; 1381e4f93234SChuck Lever */ 1382bf269551SChuck Lever static int nfs3_xdr_dec_getattr3res(struct rpc_rqst *req, 1383bf269551SChuck Lever struct xdr_stream *xdr, 1384e4f93234SChuck Lever struct nfs_fattr *result) 1385e4f93234SChuck Lever { 1386e4f93234SChuck Lever enum nfs_stat status; 1387e4f93234SChuck Lever int error; 1388e4f93234SChuck Lever 1389bf269551SChuck Lever error = decode_nfsstat3(xdr, &status); 1390e4f93234SChuck Lever if (unlikely(error)) 1391e4f93234SChuck Lever goto out; 1392e4f93234SChuck Lever if (status != NFS3_OK) 1393e4f93234SChuck Lever goto out_default; 1394bf269551SChuck Lever error = decode_fattr3(xdr, result); 1395e4f93234SChuck Lever out: 1396e4f93234SChuck Lever return error; 1397e4f93234SChuck Lever out_default: 13985e7e5a0dSBryan Schumaker return nfs3_stat_to_errno(status); 1399e4f93234SChuck Lever } 1400e4f93234SChuck Lever 1401e4f93234SChuck Lever /* 1402e4f93234SChuck Lever * 3.3.2 SETATTR3res 1403e4f93234SChuck Lever * 1404e4f93234SChuck Lever * struct SETATTR3resok { 1405e4f93234SChuck Lever * wcc_data obj_wcc; 1406e4f93234SChuck Lever * }; 1407e4f93234SChuck Lever * 1408e4f93234SChuck Lever * struct SETATTR3resfail { 1409e4f93234SChuck Lever * wcc_data obj_wcc; 1410e4f93234SChuck Lever * }; 1411e4f93234SChuck Lever * 1412e4f93234SChuck Lever * union SETATTR3res switch (nfsstat3 status) { 1413e4f93234SChuck Lever * case NFS3_OK: 1414e4f93234SChuck Lever * SETATTR3resok resok; 1415e4f93234SChuck Lever * default: 1416e4f93234SChuck Lever * SETATTR3resfail resfail; 1417e4f93234SChuck Lever * }; 1418e4f93234SChuck Lever */ 1419bf269551SChuck Lever static int nfs3_xdr_dec_setattr3res(struct rpc_rqst *req, 1420bf269551SChuck Lever struct xdr_stream *xdr, 1421e4f93234SChuck Lever struct nfs_fattr *result) 1422e4f93234SChuck Lever { 1423e4f93234SChuck Lever enum nfs_stat status; 1424e4f93234SChuck Lever int error; 1425e4f93234SChuck Lever 1426bf269551SChuck Lever error = decode_nfsstat3(xdr, &status); 1427e4f93234SChuck Lever if (unlikely(error)) 1428e4f93234SChuck Lever goto out; 1429bf269551SChuck Lever error = decode_wcc_data(xdr, result); 1430e4f93234SChuck Lever if (unlikely(error)) 1431e4f93234SChuck Lever goto out; 1432e4f93234SChuck Lever if (status != NFS3_OK) 1433e4f93234SChuck Lever goto out_status; 1434e4f93234SChuck Lever out: 1435e4f93234SChuck Lever return error; 1436e4f93234SChuck Lever out_status: 14375e7e5a0dSBryan Schumaker return nfs3_stat_to_errno(status); 1438e4f93234SChuck Lever } 1439e4f93234SChuck Lever 14401da177e4SLinus Torvalds /* 1441e4f93234SChuck Lever * 3.3.3 LOOKUP3res 1442e4f93234SChuck Lever * 1443e4f93234SChuck Lever * struct LOOKUP3resok { 1444e4f93234SChuck Lever * nfs_fh3 object; 1445e4f93234SChuck Lever * post_op_attr obj_attributes; 1446e4f93234SChuck Lever * post_op_attr dir_attributes; 1447e4f93234SChuck Lever * }; 1448e4f93234SChuck Lever * 1449e4f93234SChuck Lever * struct LOOKUP3resfail { 1450e4f93234SChuck Lever * post_op_attr dir_attributes; 1451e4f93234SChuck Lever * }; 1452e4f93234SChuck Lever * 1453e4f93234SChuck Lever * union LOOKUP3res switch (nfsstat3 status) { 1454e4f93234SChuck Lever * case NFS3_OK: 1455e4f93234SChuck Lever * LOOKUP3resok resok; 1456e4f93234SChuck Lever * default: 1457e4f93234SChuck Lever * LOOKUP3resfail resfail; 1458e4f93234SChuck Lever * }; 1459e4f93234SChuck Lever */ 1460bf269551SChuck Lever static int nfs3_xdr_dec_lookup3res(struct rpc_rqst *req, 1461bf269551SChuck Lever struct xdr_stream *xdr, 1462e4f93234SChuck Lever struct nfs3_diropres *result) 1463e4f93234SChuck Lever { 1464e4f93234SChuck Lever enum nfs_stat status; 1465e4f93234SChuck Lever int error; 1466e4f93234SChuck Lever 1467bf269551SChuck Lever error = decode_nfsstat3(xdr, &status); 1468e4f93234SChuck Lever if (unlikely(error)) 1469e4f93234SChuck Lever goto out; 1470e4f93234SChuck Lever if (status != NFS3_OK) 1471e4f93234SChuck Lever goto out_default; 1472bf269551SChuck Lever error = decode_nfs_fh3(xdr, result->fh); 1473e4f93234SChuck Lever if (unlikely(error)) 1474e4f93234SChuck Lever goto out; 1475bf269551SChuck Lever error = decode_post_op_attr(xdr, result->fattr); 1476e4f93234SChuck Lever if (unlikely(error)) 1477e4f93234SChuck Lever goto out; 1478bf269551SChuck Lever error = decode_post_op_attr(xdr, result->dir_attr); 1479e4f93234SChuck Lever out: 1480e4f93234SChuck Lever return error; 1481e4f93234SChuck Lever out_default: 1482bf269551SChuck Lever error = decode_post_op_attr(xdr, result->dir_attr); 1483e4f93234SChuck Lever if (unlikely(error)) 1484e4f93234SChuck Lever goto out; 14855e7e5a0dSBryan Schumaker return nfs3_stat_to_errno(status); 1486e4f93234SChuck Lever } 1487e4f93234SChuck Lever 1488e4f93234SChuck Lever /* 1489e4f93234SChuck Lever * 3.3.4 ACCESS3res 1490e4f93234SChuck Lever * 1491e4f93234SChuck Lever * struct ACCESS3resok { 1492e4f93234SChuck Lever * post_op_attr obj_attributes; 1493e4f93234SChuck Lever * uint32 access; 1494e4f93234SChuck Lever * }; 1495e4f93234SChuck Lever * 1496e4f93234SChuck Lever * struct ACCESS3resfail { 1497e4f93234SChuck Lever * post_op_attr obj_attributes; 1498e4f93234SChuck Lever * }; 1499e4f93234SChuck Lever * 1500e4f93234SChuck Lever * union ACCESS3res switch (nfsstat3 status) { 1501e4f93234SChuck Lever * case NFS3_OK: 1502e4f93234SChuck Lever * ACCESS3resok resok; 1503e4f93234SChuck Lever * default: 1504e4f93234SChuck Lever * ACCESS3resfail resfail; 1505e4f93234SChuck Lever * }; 1506e4f93234SChuck Lever */ 1507bf269551SChuck Lever static int nfs3_xdr_dec_access3res(struct rpc_rqst *req, 1508bf269551SChuck Lever struct xdr_stream *xdr, 1509e4f93234SChuck Lever struct nfs3_accessres *result) 1510e4f93234SChuck Lever { 1511e4f93234SChuck Lever enum nfs_stat status; 1512e4f93234SChuck Lever int error; 1513e4f93234SChuck Lever 1514bf269551SChuck Lever error = decode_nfsstat3(xdr, &status); 1515e4f93234SChuck Lever if (unlikely(error)) 1516e4f93234SChuck Lever goto out; 1517bf269551SChuck Lever error = decode_post_op_attr(xdr, result->fattr); 1518e4f93234SChuck Lever if (unlikely(error)) 1519e4f93234SChuck Lever goto out; 1520e4f93234SChuck Lever if (status != NFS3_OK) 1521e4f93234SChuck Lever goto out_default; 1522bf269551SChuck Lever error = decode_uint32(xdr, &result->access); 1523e4f93234SChuck Lever out: 1524e4f93234SChuck Lever return error; 1525e4f93234SChuck Lever out_default: 15265e7e5a0dSBryan Schumaker return nfs3_stat_to_errno(status); 1527e4f93234SChuck Lever } 1528e4f93234SChuck Lever 1529e4f93234SChuck Lever /* 1530e4f93234SChuck Lever * 3.3.5 READLINK3res 1531e4f93234SChuck Lever * 1532e4f93234SChuck Lever * struct READLINK3resok { 1533e4f93234SChuck Lever * post_op_attr symlink_attributes; 1534e4f93234SChuck Lever * nfspath3 data; 1535e4f93234SChuck Lever * }; 1536e4f93234SChuck Lever * 1537e4f93234SChuck Lever * struct READLINK3resfail { 1538e4f93234SChuck Lever * post_op_attr symlink_attributes; 1539e4f93234SChuck Lever * }; 1540e4f93234SChuck Lever * 1541e4f93234SChuck Lever * union READLINK3res switch (nfsstat3 status) { 1542e4f93234SChuck Lever * case NFS3_OK: 1543e4f93234SChuck Lever * READLINK3resok resok; 1544e4f93234SChuck Lever * default: 1545e4f93234SChuck Lever * READLINK3resfail resfail; 1546e4f93234SChuck Lever * }; 1547e4f93234SChuck Lever */ 1548bf269551SChuck Lever static int nfs3_xdr_dec_readlink3res(struct rpc_rqst *req, 1549bf269551SChuck Lever struct xdr_stream *xdr, 1550e4f93234SChuck Lever struct nfs_fattr *result) 1551e4f93234SChuck Lever { 1552e4f93234SChuck Lever enum nfs_stat status; 1553e4f93234SChuck Lever int error; 1554e4f93234SChuck Lever 1555bf269551SChuck Lever error = decode_nfsstat3(xdr, &status); 1556e4f93234SChuck Lever if (unlikely(error)) 1557e4f93234SChuck Lever goto out; 1558bf269551SChuck Lever error = decode_post_op_attr(xdr, result); 1559e4f93234SChuck Lever if (unlikely(error)) 1560e4f93234SChuck Lever goto out; 1561e4f93234SChuck Lever if (status != NFS3_OK) 1562e4f93234SChuck Lever goto out_default; 1563bf269551SChuck Lever error = decode_nfspath3(xdr); 1564e4f93234SChuck Lever out: 1565e4f93234SChuck Lever return error; 1566e4f93234SChuck Lever out_default: 15675e7e5a0dSBryan Schumaker return nfs3_stat_to_errno(status); 1568e4f93234SChuck Lever } 1569e4f93234SChuck Lever 1570e4f93234SChuck Lever /* 1571e4f93234SChuck Lever * 3.3.6 READ3res 1572e4f93234SChuck Lever * 1573e4f93234SChuck Lever * struct READ3resok { 1574e4f93234SChuck Lever * post_op_attr file_attributes; 1575e4f93234SChuck Lever * count3 count; 1576e4f93234SChuck Lever * bool eof; 1577e4f93234SChuck Lever * opaque data<>; 1578e4f93234SChuck Lever * }; 1579e4f93234SChuck Lever * 1580e4f93234SChuck Lever * struct READ3resfail { 1581e4f93234SChuck Lever * post_op_attr file_attributes; 1582e4f93234SChuck Lever * }; 1583e4f93234SChuck Lever * 1584e4f93234SChuck Lever * union READ3res switch (nfsstat3 status) { 1585e4f93234SChuck Lever * case NFS3_OK: 1586e4f93234SChuck Lever * READ3resok resok; 1587e4f93234SChuck Lever * default: 1588e4f93234SChuck Lever * READ3resfail resfail; 1589e4f93234SChuck Lever * }; 1590e4f93234SChuck Lever */ 1591e4f93234SChuck Lever static int decode_read3resok(struct xdr_stream *xdr, 1592e4f93234SChuck Lever struct nfs_readres *result) 1593e4f93234SChuck Lever { 1594e4f93234SChuck Lever u32 eof, count, ocount, recvd; 1595e4f93234SChuck Lever __be32 *p; 1596e4f93234SChuck Lever 1597e4f93234SChuck Lever p = xdr_inline_decode(xdr, 4 + 4 + 4); 1598e4f93234SChuck Lever if (unlikely(p == NULL)) 1599e4f93234SChuck Lever goto out_overflow; 1600e4f93234SChuck Lever count = be32_to_cpup(p++); 1601e4f93234SChuck Lever eof = be32_to_cpup(p++); 1602e4f93234SChuck Lever ocount = be32_to_cpup(p++); 1603e4f93234SChuck Lever if (unlikely(ocount != count)) 1604e4f93234SChuck Lever goto out_mismatch; 160564bd577eSTrond Myklebust recvd = xdr_read_pages(xdr, count); 1606e4f93234SChuck Lever if (unlikely(count > recvd)) 1607e4f93234SChuck Lever goto out_cheating; 1608e4f93234SChuck Lever out: 1609e4f93234SChuck Lever result->eof = eof; 1610e4f93234SChuck Lever result->count = count; 1611e4f93234SChuck Lever return count; 1612e4f93234SChuck Lever out_mismatch: 1613e4f93234SChuck Lever dprintk("NFS: READ count doesn't match length of opaque: " 1614e4f93234SChuck Lever "count %u != ocount %u\n", count, ocount); 1615e4f93234SChuck Lever return -EIO; 1616e4f93234SChuck Lever out_cheating: 1617e4f93234SChuck Lever dprintk("NFS: server cheating in read result: " 1618e4f93234SChuck Lever "count %u > recvd %u\n", count, recvd); 1619e4f93234SChuck Lever count = recvd; 1620e4f93234SChuck Lever eof = 0; 1621e4f93234SChuck Lever goto out; 1622e4f93234SChuck Lever out_overflow: 1623e4f93234SChuck Lever print_overflow_msg(__func__, xdr); 1624e4f93234SChuck Lever return -EIO; 1625e4f93234SChuck Lever } 1626e4f93234SChuck Lever 1627bf269551SChuck Lever static int nfs3_xdr_dec_read3res(struct rpc_rqst *req, struct xdr_stream *xdr, 1628e4f93234SChuck Lever struct nfs_readres *result) 1629e4f93234SChuck Lever { 1630e4f93234SChuck Lever enum nfs_stat status; 1631e4f93234SChuck Lever int error; 1632e4f93234SChuck Lever 1633bf269551SChuck Lever error = decode_nfsstat3(xdr, &status); 1634e4f93234SChuck Lever if (unlikely(error)) 1635e4f93234SChuck Lever goto out; 1636bf269551SChuck Lever error = decode_post_op_attr(xdr, result->fattr); 1637e4f93234SChuck Lever if (unlikely(error)) 1638e4f93234SChuck Lever goto out; 1639e4f93234SChuck Lever if (status != NFS3_OK) 1640e4f93234SChuck Lever goto out_status; 1641bf269551SChuck Lever error = decode_read3resok(xdr, result); 1642e4f93234SChuck Lever out: 1643e4f93234SChuck Lever return error; 1644e4f93234SChuck Lever out_status: 16455e7e5a0dSBryan Schumaker return nfs3_stat_to_errno(status); 1646e4f93234SChuck Lever } 1647e4f93234SChuck Lever 1648e4f93234SChuck Lever /* 1649e4f93234SChuck Lever * 3.3.7 WRITE3res 1650e4f93234SChuck Lever * 1651e4f93234SChuck Lever * enum stable_how { 1652e4f93234SChuck Lever * UNSTABLE = 0, 1653e4f93234SChuck Lever * DATA_SYNC = 1, 1654e4f93234SChuck Lever * FILE_SYNC = 2 1655e4f93234SChuck Lever * }; 1656e4f93234SChuck Lever * 1657e4f93234SChuck Lever * struct WRITE3resok { 1658e4f93234SChuck Lever * wcc_data file_wcc; 1659e4f93234SChuck Lever * count3 count; 1660e4f93234SChuck Lever * stable_how committed; 1661e4f93234SChuck Lever * writeverf3 verf; 1662e4f93234SChuck Lever * }; 1663e4f93234SChuck Lever * 1664e4f93234SChuck Lever * struct WRITE3resfail { 1665e4f93234SChuck Lever * wcc_data file_wcc; 1666e4f93234SChuck Lever * }; 1667e4f93234SChuck Lever * 1668e4f93234SChuck Lever * union WRITE3res switch (nfsstat3 status) { 1669e4f93234SChuck Lever * case NFS3_OK: 1670e4f93234SChuck Lever * WRITE3resok resok; 1671e4f93234SChuck Lever * default: 1672e4f93234SChuck Lever * WRITE3resfail resfail; 1673e4f93234SChuck Lever * }; 1674e4f93234SChuck Lever */ 1675e4f93234SChuck Lever static int decode_write3resok(struct xdr_stream *xdr, 1676e4f93234SChuck Lever struct nfs_writeres *result) 1677e4f93234SChuck Lever { 1678e4f93234SChuck Lever __be32 *p; 1679e4f93234SChuck Lever 16802f2c63bcSTrond Myklebust p = xdr_inline_decode(xdr, 4 + 4); 1681e4f93234SChuck Lever if (unlikely(p == NULL)) 1682e4f93234SChuck Lever goto out_overflow; 1683e4f93234SChuck Lever result->count = be32_to_cpup(p++); 1684e4f93234SChuck Lever result->verf->committed = be32_to_cpup(p++); 1685e4f93234SChuck Lever if (unlikely(result->verf->committed > NFS_FILE_SYNC)) 1686e4f93234SChuck Lever goto out_badvalue; 16872f2c63bcSTrond Myklebust if (decode_writeverf3(xdr, &result->verf->verifier)) 16882f2c63bcSTrond Myklebust goto out_eio; 1689e4f93234SChuck Lever return result->count; 1690e4f93234SChuck Lever out_badvalue: 1691e4f93234SChuck Lever dprintk("NFS: bad stable_how value: %u\n", result->verf->committed); 1692e4f93234SChuck Lever return -EIO; 1693e4f93234SChuck Lever out_overflow: 1694e4f93234SChuck Lever print_overflow_msg(__func__, xdr); 16952f2c63bcSTrond Myklebust out_eio: 1696e4f93234SChuck Lever return -EIO; 1697e4f93234SChuck Lever } 1698e4f93234SChuck Lever 1699bf269551SChuck Lever static int nfs3_xdr_dec_write3res(struct rpc_rqst *req, struct xdr_stream *xdr, 1700e4f93234SChuck Lever struct nfs_writeres *result) 1701e4f93234SChuck Lever { 1702e4f93234SChuck Lever enum nfs_stat status; 1703e4f93234SChuck Lever int error; 1704e4f93234SChuck Lever 1705bf269551SChuck Lever error = decode_nfsstat3(xdr, &status); 1706e4f93234SChuck Lever if (unlikely(error)) 1707e4f93234SChuck Lever goto out; 1708bf269551SChuck Lever error = decode_wcc_data(xdr, result->fattr); 1709e4f93234SChuck Lever if (unlikely(error)) 1710e4f93234SChuck Lever goto out; 1711e4f93234SChuck Lever if (status != NFS3_OK) 1712e4f93234SChuck Lever goto out_status; 1713bf269551SChuck Lever error = decode_write3resok(xdr, result); 1714e4f93234SChuck Lever out: 1715e4f93234SChuck Lever return error; 1716e4f93234SChuck Lever out_status: 17175e7e5a0dSBryan Schumaker return nfs3_stat_to_errno(status); 1718e4f93234SChuck Lever } 1719e4f93234SChuck Lever 1720e4f93234SChuck Lever /* 1721e4f93234SChuck Lever * 3.3.8 CREATE3res 1722e4f93234SChuck Lever * 1723e4f93234SChuck Lever * struct CREATE3resok { 1724e4f93234SChuck Lever * post_op_fh3 obj; 1725e4f93234SChuck Lever * post_op_attr obj_attributes; 1726e4f93234SChuck Lever * wcc_data dir_wcc; 1727e4f93234SChuck Lever * }; 1728e4f93234SChuck Lever * 1729e4f93234SChuck Lever * struct CREATE3resfail { 1730e4f93234SChuck Lever * wcc_data dir_wcc; 1731e4f93234SChuck Lever * }; 1732e4f93234SChuck Lever * 1733e4f93234SChuck Lever * union CREATE3res switch (nfsstat3 status) { 1734e4f93234SChuck Lever * case NFS3_OK: 1735e4f93234SChuck Lever * CREATE3resok resok; 1736e4f93234SChuck Lever * default: 1737e4f93234SChuck Lever * CREATE3resfail resfail; 1738e4f93234SChuck Lever * }; 1739e4f93234SChuck Lever */ 1740e4f93234SChuck Lever static int decode_create3resok(struct xdr_stream *xdr, 1741e4f93234SChuck Lever struct nfs3_diropres *result) 1742e4f93234SChuck Lever { 1743e4f93234SChuck Lever int error; 1744e4f93234SChuck Lever 1745e4f93234SChuck Lever error = decode_post_op_fh3(xdr, result->fh); 1746e4f93234SChuck Lever if (unlikely(error)) 1747e4f93234SChuck Lever goto out; 1748e4f93234SChuck Lever error = decode_post_op_attr(xdr, result->fattr); 1749e4f93234SChuck Lever if (unlikely(error)) 1750e4f93234SChuck Lever goto out; 1751e4f93234SChuck Lever /* The server isn't required to return a file handle. 1752e4f93234SChuck Lever * If it didn't, force the client to perform a LOOKUP 1753e4f93234SChuck Lever * to determine the correct file handle and attribute 1754e4f93234SChuck Lever * values for the new object. */ 1755e4f93234SChuck Lever if (result->fh->size == 0) 1756e4f93234SChuck Lever result->fattr->valid = 0; 1757e4f93234SChuck Lever error = decode_wcc_data(xdr, result->dir_attr); 1758e4f93234SChuck Lever out: 1759e4f93234SChuck Lever return error; 1760e4f93234SChuck Lever } 1761e4f93234SChuck Lever 1762bf269551SChuck Lever static int nfs3_xdr_dec_create3res(struct rpc_rqst *req, 1763bf269551SChuck Lever struct xdr_stream *xdr, 1764e4f93234SChuck Lever struct nfs3_diropres *result) 1765e4f93234SChuck Lever { 1766e4f93234SChuck Lever enum nfs_stat status; 1767e4f93234SChuck Lever int error; 1768e4f93234SChuck Lever 1769bf269551SChuck Lever error = decode_nfsstat3(xdr, &status); 1770e4f93234SChuck Lever if (unlikely(error)) 1771e4f93234SChuck Lever goto out; 1772e4f93234SChuck Lever if (status != NFS3_OK) 1773e4f93234SChuck Lever goto out_default; 1774bf269551SChuck Lever error = decode_create3resok(xdr, result); 1775e4f93234SChuck Lever out: 1776e4f93234SChuck Lever return error; 1777e4f93234SChuck Lever out_default: 1778bf269551SChuck Lever error = decode_wcc_data(xdr, result->dir_attr); 1779e4f93234SChuck Lever if (unlikely(error)) 1780e4f93234SChuck Lever goto out; 17815e7e5a0dSBryan Schumaker return nfs3_stat_to_errno(status); 1782e4f93234SChuck Lever } 1783e4f93234SChuck Lever 1784e4f93234SChuck Lever /* 1785e4f93234SChuck Lever * 3.3.12 REMOVE3res 1786e4f93234SChuck Lever * 1787e4f93234SChuck Lever * struct REMOVE3resok { 1788e4f93234SChuck Lever * wcc_data dir_wcc; 1789e4f93234SChuck Lever * }; 1790e4f93234SChuck Lever * 1791e4f93234SChuck Lever * struct REMOVE3resfail { 1792e4f93234SChuck Lever * wcc_data dir_wcc; 1793e4f93234SChuck Lever * }; 1794e4f93234SChuck Lever * 1795e4f93234SChuck Lever * union REMOVE3res switch (nfsstat3 status) { 1796e4f93234SChuck Lever * case NFS3_OK: 1797e4f93234SChuck Lever * REMOVE3resok resok; 1798e4f93234SChuck Lever * default: 1799e4f93234SChuck Lever * REMOVE3resfail resfail; 1800e4f93234SChuck Lever * }; 1801e4f93234SChuck Lever */ 1802bf269551SChuck Lever static int nfs3_xdr_dec_remove3res(struct rpc_rqst *req, 1803bf269551SChuck Lever struct xdr_stream *xdr, 1804e4f93234SChuck Lever struct nfs_removeres *result) 1805e4f93234SChuck Lever { 1806e4f93234SChuck Lever enum nfs_stat status; 1807e4f93234SChuck Lever int error; 1808e4f93234SChuck Lever 1809bf269551SChuck Lever error = decode_nfsstat3(xdr, &status); 1810e4f93234SChuck Lever if (unlikely(error)) 1811e4f93234SChuck Lever goto out; 1812bf269551SChuck Lever error = decode_wcc_data(xdr, result->dir_attr); 1813e4f93234SChuck Lever if (unlikely(error)) 1814e4f93234SChuck Lever goto out; 1815e4f93234SChuck Lever if (status != NFS3_OK) 1816e4f93234SChuck Lever goto out_status; 1817e4f93234SChuck Lever out: 1818e4f93234SChuck Lever return error; 1819e4f93234SChuck Lever out_status: 18205e7e5a0dSBryan Schumaker return nfs3_stat_to_errno(status); 1821e4f93234SChuck Lever } 1822e4f93234SChuck Lever 1823e4f93234SChuck Lever /* 1824e4f93234SChuck Lever * 3.3.14 RENAME3res 1825e4f93234SChuck Lever * 1826e4f93234SChuck Lever * struct RENAME3resok { 1827e4f93234SChuck Lever * wcc_data fromdir_wcc; 1828e4f93234SChuck Lever * wcc_data todir_wcc; 1829e4f93234SChuck Lever * }; 1830e4f93234SChuck Lever * 1831e4f93234SChuck Lever * struct RENAME3resfail { 1832e4f93234SChuck Lever * wcc_data fromdir_wcc; 1833e4f93234SChuck Lever * wcc_data todir_wcc; 1834e4f93234SChuck Lever * }; 1835e4f93234SChuck Lever * 1836e4f93234SChuck Lever * union RENAME3res switch (nfsstat3 status) { 1837e4f93234SChuck Lever * case NFS3_OK: 1838e4f93234SChuck Lever * RENAME3resok resok; 1839e4f93234SChuck Lever * default: 1840e4f93234SChuck Lever * RENAME3resfail resfail; 1841e4f93234SChuck Lever * }; 1842e4f93234SChuck Lever */ 1843bf269551SChuck Lever static int nfs3_xdr_dec_rename3res(struct rpc_rqst *req, 1844bf269551SChuck Lever struct xdr_stream *xdr, 1845e4f93234SChuck Lever struct nfs_renameres *result) 1846e4f93234SChuck Lever { 1847e4f93234SChuck Lever enum nfs_stat status; 1848e4f93234SChuck Lever int error; 1849e4f93234SChuck Lever 1850bf269551SChuck Lever error = decode_nfsstat3(xdr, &status); 1851e4f93234SChuck Lever if (unlikely(error)) 1852e4f93234SChuck Lever goto out; 1853bf269551SChuck Lever error = decode_wcc_data(xdr, result->old_fattr); 1854e4f93234SChuck Lever if (unlikely(error)) 1855e4f93234SChuck Lever goto out; 1856bf269551SChuck Lever error = decode_wcc_data(xdr, result->new_fattr); 1857e4f93234SChuck Lever if (unlikely(error)) 1858e4f93234SChuck Lever goto out; 1859e4f93234SChuck Lever if (status != NFS3_OK) 1860e4f93234SChuck Lever goto out_status; 1861e4f93234SChuck Lever out: 1862e4f93234SChuck Lever return error; 1863e4f93234SChuck Lever out_status: 18645e7e5a0dSBryan Schumaker return nfs3_stat_to_errno(status); 1865e4f93234SChuck Lever } 1866e4f93234SChuck Lever 1867e4f93234SChuck Lever /* 1868e4f93234SChuck Lever * 3.3.15 LINK3res 1869e4f93234SChuck Lever * 1870e4f93234SChuck Lever * struct LINK3resok { 1871e4f93234SChuck Lever * post_op_attr file_attributes; 1872e4f93234SChuck Lever * wcc_data linkdir_wcc; 1873e4f93234SChuck Lever * }; 1874e4f93234SChuck Lever * 1875e4f93234SChuck Lever * struct LINK3resfail { 1876e4f93234SChuck Lever * post_op_attr file_attributes; 1877e4f93234SChuck Lever * wcc_data linkdir_wcc; 1878e4f93234SChuck Lever * }; 1879e4f93234SChuck Lever * 1880e4f93234SChuck Lever * union LINK3res switch (nfsstat3 status) { 1881e4f93234SChuck Lever * case NFS3_OK: 1882e4f93234SChuck Lever * LINK3resok resok; 1883e4f93234SChuck Lever * default: 1884e4f93234SChuck Lever * LINK3resfail resfail; 1885e4f93234SChuck Lever * }; 1886e4f93234SChuck Lever */ 1887bf269551SChuck Lever static int nfs3_xdr_dec_link3res(struct rpc_rqst *req, struct xdr_stream *xdr, 1888e4f93234SChuck Lever struct nfs3_linkres *result) 1889e4f93234SChuck Lever { 1890e4f93234SChuck Lever enum nfs_stat status; 1891e4f93234SChuck Lever int error; 1892e4f93234SChuck Lever 1893bf269551SChuck Lever error = decode_nfsstat3(xdr, &status); 1894e4f93234SChuck Lever if (unlikely(error)) 1895e4f93234SChuck Lever goto out; 1896bf269551SChuck Lever error = decode_post_op_attr(xdr, result->fattr); 1897e4f93234SChuck Lever if (unlikely(error)) 1898e4f93234SChuck Lever goto out; 1899bf269551SChuck Lever error = decode_wcc_data(xdr, result->dir_attr); 1900e4f93234SChuck Lever if (unlikely(error)) 1901e4f93234SChuck Lever goto out; 1902e4f93234SChuck Lever if (status != NFS3_OK) 1903e4f93234SChuck Lever goto out_status; 1904e4f93234SChuck Lever out: 1905e4f93234SChuck Lever return error; 1906e4f93234SChuck Lever out_status: 19075e7e5a0dSBryan Schumaker return nfs3_stat_to_errno(status); 1908e4f93234SChuck Lever } 1909e4f93234SChuck Lever 1910e4f93234SChuck Lever /** 1911e4f93234SChuck Lever * nfs3_decode_dirent - Decode a single NFSv3 directory entry stored in 1912e4f93234SChuck Lever * the local page cache 1913e4f93234SChuck Lever * @xdr: XDR stream where entry resides 1914e4f93234SChuck Lever * @entry: buffer to fill in with entry data 1915e4f93234SChuck Lever * @plus: boolean indicating whether this should be a readdirplus entry 1916e4f93234SChuck Lever * 1917573c4e1eSChuck Lever * Returns zero if successful, otherwise a negative errno value is 1918573c4e1eSChuck Lever * returned. 1919e4f93234SChuck Lever * 1920e4f93234SChuck Lever * This function is not invoked during READDIR reply decoding, but 1921e4f93234SChuck Lever * rather whenever an application invokes the getdents(2) system call 1922e4f93234SChuck Lever * on a directory already in our cache. 1923e4f93234SChuck Lever * 1924e4f93234SChuck Lever * 3.3.16 entry3 1925e4f93234SChuck Lever * 1926e4f93234SChuck Lever * struct entry3 { 1927e4f93234SChuck Lever * fileid3 fileid; 1928e4f93234SChuck Lever * filename3 name; 1929e4f93234SChuck Lever * cookie3 cookie; 1930e4f93234SChuck Lever * fhandle3 filehandle; 1931e4f93234SChuck Lever * post_op_attr3 attributes; 1932e4f93234SChuck Lever * entry3 *nextentry; 1933e4f93234SChuck Lever * }; 1934e4f93234SChuck Lever * 1935e4f93234SChuck Lever * 3.3.17 entryplus3 1936e4f93234SChuck Lever * struct entryplus3 { 1937e4f93234SChuck Lever * fileid3 fileid; 1938e4f93234SChuck Lever * filename3 name; 1939e4f93234SChuck Lever * cookie3 cookie; 1940e4f93234SChuck Lever * post_op_attr name_attributes; 1941e4f93234SChuck Lever * post_op_fh3 name_handle; 1942e4f93234SChuck Lever * entryplus3 *nextentry; 1943e4f93234SChuck Lever * }; 1944e4f93234SChuck Lever */ 1945573c4e1eSChuck Lever int nfs3_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, 1946573c4e1eSChuck Lever int plus) 1947e4f93234SChuck Lever { 1948e4f93234SChuck Lever struct nfs_entry old = *entry; 1949e4f93234SChuck Lever __be32 *p; 1950e4f93234SChuck Lever int error; 1951e4f93234SChuck Lever 1952e4f93234SChuck Lever p = xdr_inline_decode(xdr, 4); 1953e4f93234SChuck Lever if (unlikely(p == NULL)) 1954e4f93234SChuck Lever goto out_overflow; 1955e4f93234SChuck Lever if (*p == xdr_zero) { 1956e4f93234SChuck Lever p = xdr_inline_decode(xdr, 4); 1957e4f93234SChuck Lever if (unlikely(p == NULL)) 1958e4f93234SChuck Lever goto out_overflow; 1959e4f93234SChuck Lever if (*p == xdr_zero) 1960573c4e1eSChuck Lever return -EAGAIN; 1961e4f93234SChuck Lever entry->eof = 1; 1962573c4e1eSChuck Lever return -EBADCOOKIE; 1963e4f93234SChuck Lever } 1964e4f93234SChuck Lever 1965e4f93234SChuck Lever error = decode_fileid3(xdr, &entry->ino); 1966e4f93234SChuck Lever if (unlikely(error)) 1967573c4e1eSChuck Lever return error; 1968e4f93234SChuck Lever 1969e4f93234SChuck Lever error = decode_inline_filename3(xdr, &entry->name, &entry->len); 1970e4f93234SChuck Lever if (unlikely(error)) 1971573c4e1eSChuck Lever return error; 1972e4f93234SChuck Lever 1973e4f93234SChuck Lever entry->prev_cookie = entry->cookie; 1974e4f93234SChuck Lever error = decode_cookie3(xdr, &entry->cookie); 1975e4f93234SChuck Lever if (unlikely(error)) 1976573c4e1eSChuck Lever return error; 1977e4f93234SChuck Lever 1978e4f93234SChuck Lever entry->d_type = DT_UNKNOWN; 1979e4f93234SChuck Lever 1980e4f93234SChuck Lever if (plus) { 1981e4f93234SChuck Lever entry->fattr->valid = 0; 1982e4f93234SChuck Lever error = decode_post_op_attr(xdr, entry->fattr); 1983e4f93234SChuck Lever if (unlikely(error)) 1984573c4e1eSChuck Lever return error; 1985e4f93234SChuck Lever if (entry->fattr->valid & NFS_ATTR_FATTR_V3) 1986e4f93234SChuck Lever entry->d_type = nfs_umode_to_dtype(entry->fattr->mode); 1987e4f93234SChuck Lever 1988e4f93234SChuck Lever /* In fact, a post_op_fh3: */ 1989e4f93234SChuck Lever p = xdr_inline_decode(xdr, 4); 1990e4f93234SChuck Lever if (unlikely(p == NULL)) 1991e4f93234SChuck Lever goto out_overflow; 1992e4f93234SChuck Lever if (*p != xdr_zero) { 1993e4f93234SChuck Lever error = decode_nfs_fh3(xdr, entry->fh); 1994e4f93234SChuck Lever if (unlikely(error)) { 1995e4f93234SChuck Lever if (error == -E2BIG) 1996e4f93234SChuck Lever goto out_truncated; 1997573c4e1eSChuck Lever return error; 1998e4f93234SChuck Lever } 1999e4f93234SChuck Lever } else 2000e4f93234SChuck Lever zero_nfs_fh3(entry->fh); 2001e4f93234SChuck Lever } 2002e4f93234SChuck Lever 2003573c4e1eSChuck Lever return 0; 2004e4f93234SChuck Lever 2005e4f93234SChuck Lever out_overflow: 2006e4f93234SChuck Lever print_overflow_msg(__func__, xdr); 2007573c4e1eSChuck Lever return -EAGAIN; 2008e4f93234SChuck Lever out_truncated: 2009e4f93234SChuck Lever dprintk("NFS: directory entry contains invalid file handle\n"); 2010e4f93234SChuck Lever *entry = old; 2011573c4e1eSChuck Lever return -EAGAIN; 2012e4f93234SChuck Lever } 2013e4f93234SChuck Lever 2014e4f93234SChuck Lever /* 2015e4f93234SChuck Lever * 3.3.16 READDIR3res 2016e4f93234SChuck Lever * 2017e4f93234SChuck Lever * struct dirlist3 { 2018e4f93234SChuck Lever * entry3 *entries; 2019e4f93234SChuck Lever * bool eof; 2020e4f93234SChuck Lever * }; 2021e4f93234SChuck Lever * 2022e4f93234SChuck Lever * struct READDIR3resok { 2023e4f93234SChuck Lever * post_op_attr dir_attributes; 2024e4f93234SChuck Lever * cookieverf3 cookieverf; 2025e4f93234SChuck Lever * dirlist3 reply; 2026e4f93234SChuck Lever * }; 2027e4f93234SChuck Lever * 2028e4f93234SChuck Lever * struct READDIR3resfail { 2029e4f93234SChuck Lever * post_op_attr dir_attributes; 2030e4f93234SChuck Lever * }; 2031e4f93234SChuck Lever * 2032e4f93234SChuck Lever * union READDIR3res switch (nfsstat3 status) { 2033e4f93234SChuck Lever * case NFS3_OK: 2034e4f93234SChuck Lever * READDIR3resok resok; 2035e4f93234SChuck Lever * default: 2036e4f93234SChuck Lever * READDIR3resfail resfail; 2037e4f93234SChuck Lever * }; 2038e4f93234SChuck Lever * 2039e4f93234SChuck Lever * Read the directory contents into the page cache, but otherwise 2040e4f93234SChuck Lever * don't touch them. The actual decoding is done by nfs3_decode_entry() 2041e4f93234SChuck Lever * during subsequent nfs_readdir() calls. 2042e4f93234SChuck Lever */ 2043e4f93234SChuck Lever static int decode_dirlist3(struct xdr_stream *xdr) 2044e4f93234SChuck Lever { 204564bd577eSTrond Myklebust return xdr_read_pages(xdr, xdr->buf->page_len); 2046e4f93234SChuck Lever } 2047e4f93234SChuck Lever 2048e4f93234SChuck Lever static int decode_readdir3resok(struct xdr_stream *xdr, 2049e4f93234SChuck Lever struct nfs3_readdirres *result) 2050e4f93234SChuck Lever { 2051e4f93234SChuck Lever int error; 2052e4f93234SChuck Lever 2053e4f93234SChuck Lever error = decode_post_op_attr(xdr, result->dir_attr); 2054e4f93234SChuck Lever if (unlikely(error)) 2055e4f93234SChuck Lever goto out; 2056e4f93234SChuck Lever /* XXX: do we need to check if result->verf != NULL ? */ 2057e4f93234SChuck Lever error = decode_cookieverf3(xdr, result->verf); 2058e4f93234SChuck Lever if (unlikely(error)) 2059e4f93234SChuck Lever goto out; 2060e4f93234SChuck Lever error = decode_dirlist3(xdr); 2061e4f93234SChuck Lever out: 2062e4f93234SChuck Lever return error; 2063e4f93234SChuck Lever } 2064e4f93234SChuck Lever 2065bf269551SChuck Lever static int nfs3_xdr_dec_readdir3res(struct rpc_rqst *req, 2066bf269551SChuck Lever struct xdr_stream *xdr, 2067e4f93234SChuck Lever struct nfs3_readdirres *result) 2068e4f93234SChuck Lever { 2069e4f93234SChuck Lever enum nfs_stat status; 2070e4f93234SChuck Lever int error; 2071e4f93234SChuck Lever 2072bf269551SChuck Lever error = decode_nfsstat3(xdr, &status); 2073e4f93234SChuck Lever if (unlikely(error)) 2074e4f93234SChuck Lever goto out; 2075e4f93234SChuck Lever if (status != NFS3_OK) 2076e4f93234SChuck Lever goto out_default; 2077bf269551SChuck Lever error = decode_readdir3resok(xdr, result); 2078e4f93234SChuck Lever out: 2079e4f93234SChuck Lever return error; 2080e4f93234SChuck Lever out_default: 2081bf269551SChuck Lever error = decode_post_op_attr(xdr, result->dir_attr); 2082e4f93234SChuck Lever if (unlikely(error)) 2083e4f93234SChuck Lever goto out; 20845e7e5a0dSBryan Schumaker return nfs3_stat_to_errno(status); 2085e4f93234SChuck Lever } 2086e4f93234SChuck Lever 2087e4f93234SChuck Lever /* 2088e4f93234SChuck Lever * 3.3.18 FSSTAT3res 2089e4f93234SChuck Lever * 2090e4f93234SChuck Lever * struct FSSTAT3resok { 2091e4f93234SChuck Lever * post_op_attr obj_attributes; 2092e4f93234SChuck Lever * size3 tbytes; 2093e4f93234SChuck Lever * size3 fbytes; 2094e4f93234SChuck Lever * size3 abytes; 2095e4f93234SChuck Lever * size3 tfiles; 2096e4f93234SChuck Lever * size3 ffiles; 2097e4f93234SChuck Lever * size3 afiles; 2098e4f93234SChuck Lever * uint32 invarsec; 2099e4f93234SChuck Lever * }; 2100e4f93234SChuck Lever * 2101e4f93234SChuck Lever * struct FSSTAT3resfail { 2102e4f93234SChuck Lever * post_op_attr obj_attributes; 2103e4f93234SChuck Lever * }; 2104e4f93234SChuck Lever * 2105e4f93234SChuck Lever * union FSSTAT3res switch (nfsstat3 status) { 2106e4f93234SChuck Lever * case NFS3_OK: 2107e4f93234SChuck Lever * FSSTAT3resok resok; 2108e4f93234SChuck Lever * default: 2109e4f93234SChuck Lever * FSSTAT3resfail resfail; 2110e4f93234SChuck Lever * }; 2111e4f93234SChuck Lever */ 2112e4f93234SChuck Lever static int decode_fsstat3resok(struct xdr_stream *xdr, 2113e4f93234SChuck Lever struct nfs_fsstat *result) 2114e4f93234SChuck Lever { 2115e4f93234SChuck Lever __be32 *p; 2116e4f93234SChuck Lever 2117e4f93234SChuck Lever p = xdr_inline_decode(xdr, 8 * 6 + 4); 2118e4f93234SChuck Lever if (unlikely(p == NULL)) 2119e4f93234SChuck Lever goto out_overflow; 2120e4f93234SChuck Lever p = xdr_decode_size3(p, &result->tbytes); 2121e4f93234SChuck Lever p = xdr_decode_size3(p, &result->fbytes); 2122e4f93234SChuck Lever p = xdr_decode_size3(p, &result->abytes); 2123e4f93234SChuck Lever p = xdr_decode_size3(p, &result->tfiles); 2124e4f93234SChuck Lever p = xdr_decode_size3(p, &result->ffiles); 2125e4f93234SChuck Lever xdr_decode_size3(p, &result->afiles); 2126e4f93234SChuck Lever /* ignore invarsec */ 2127e4f93234SChuck Lever return 0; 2128e4f93234SChuck Lever out_overflow: 2129e4f93234SChuck Lever print_overflow_msg(__func__, xdr); 2130e4f93234SChuck Lever return -EIO; 2131e4f93234SChuck Lever } 2132e4f93234SChuck Lever 2133bf269551SChuck Lever static int nfs3_xdr_dec_fsstat3res(struct rpc_rqst *req, 2134bf269551SChuck Lever struct xdr_stream *xdr, 2135e4f93234SChuck Lever struct nfs_fsstat *result) 2136e4f93234SChuck Lever { 2137e4f93234SChuck Lever enum nfs_stat status; 2138e4f93234SChuck Lever int error; 2139e4f93234SChuck Lever 2140bf269551SChuck Lever error = decode_nfsstat3(xdr, &status); 2141e4f93234SChuck Lever if (unlikely(error)) 2142e4f93234SChuck Lever goto out; 2143bf269551SChuck Lever error = decode_post_op_attr(xdr, result->fattr); 2144e4f93234SChuck Lever if (unlikely(error)) 2145e4f93234SChuck Lever goto out; 2146e4f93234SChuck Lever if (status != NFS3_OK) 2147e4f93234SChuck Lever goto out_status; 2148bf269551SChuck Lever error = decode_fsstat3resok(xdr, result); 2149e4f93234SChuck Lever out: 2150e4f93234SChuck Lever return error; 2151e4f93234SChuck Lever out_status: 21525e7e5a0dSBryan Schumaker return nfs3_stat_to_errno(status); 2153e4f93234SChuck Lever } 2154e4f93234SChuck Lever 2155e4f93234SChuck Lever /* 2156e4f93234SChuck Lever * 3.3.19 FSINFO3res 2157e4f93234SChuck Lever * 2158e4f93234SChuck Lever * struct FSINFO3resok { 2159e4f93234SChuck Lever * post_op_attr obj_attributes; 2160e4f93234SChuck Lever * uint32 rtmax; 2161e4f93234SChuck Lever * uint32 rtpref; 2162e4f93234SChuck Lever * uint32 rtmult; 2163e4f93234SChuck Lever * uint32 wtmax; 2164e4f93234SChuck Lever * uint32 wtpref; 2165e4f93234SChuck Lever * uint32 wtmult; 2166e4f93234SChuck Lever * uint32 dtpref; 2167e4f93234SChuck Lever * size3 maxfilesize; 2168e4f93234SChuck Lever * nfstime3 time_delta; 2169e4f93234SChuck Lever * uint32 properties; 2170e4f93234SChuck Lever * }; 2171e4f93234SChuck Lever * 2172e4f93234SChuck Lever * struct FSINFO3resfail { 2173e4f93234SChuck Lever * post_op_attr obj_attributes; 2174e4f93234SChuck Lever * }; 2175e4f93234SChuck Lever * 2176e4f93234SChuck Lever * union FSINFO3res switch (nfsstat3 status) { 2177e4f93234SChuck Lever * case NFS3_OK: 2178e4f93234SChuck Lever * FSINFO3resok resok; 2179e4f93234SChuck Lever * default: 2180e4f93234SChuck Lever * FSINFO3resfail resfail; 2181e4f93234SChuck Lever * }; 2182e4f93234SChuck Lever */ 2183e4f93234SChuck Lever static int decode_fsinfo3resok(struct xdr_stream *xdr, 2184e4f93234SChuck Lever struct nfs_fsinfo *result) 2185e4f93234SChuck Lever { 2186e4f93234SChuck Lever __be32 *p; 2187e4f93234SChuck Lever 2188e4f93234SChuck Lever p = xdr_inline_decode(xdr, 4 * 7 + 8 + 8 + 4); 2189e4f93234SChuck Lever if (unlikely(p == NULL)) 2190e4f93234SChuck Lever goto out_overflow; 2191e4f93234SChuck Lever result->rtmax = be32_to_cpup(p++); 2192e4f93234SChuck Lever result->rtpref = be32_to_cpup(p++); 2193e4f93234SChuck Lever result->rtmult = be32_to_cpup(p++); 2194e4f93234SChuck Lever result->wtmax = be32_to_cpup(p++); 2195e4f93234SChuck Lever result->wtpref = be32_to_cpup(p++); 2196e4f93234SChuck Lever result->wtmult = be32_to_cpup(p++); 2197e4f93234SChuck Lever result->dtpref = be32_to_cpup(p++); 2198e4f93234SChuck Lever p = xdr_decode_size3(p, &result->maxfilesize); 2199f6048709SChuck Lever xdr_decode_nfstime3(p, &result->time_delta); 2200e4f93234SChuck Lever 2201e4f93234SChuck Lever /* ignore properties */ 2202e4f93234SChuck Lever result->lease_time = 0; 2203e4f93234SChuck Lever return 0; 2204e4f93234SChuck Lever out_overflow: 2205e4f93234SChuck Lever print_overflow_msg(__func__, xdr); 2206e4f93234SChuck Lever return -EIO; 2207e4f93234SChuck Lever } 2208e4f93234SChuck Lever 2209bf269551SChuck Lever static int nfs3_xdr_dec_fsinfo3res(struct rpc_rqst *req, 2210bf269551SChuck Lever struct xdr_stream *xdr, 2211e4f93234SChuck Lever struct nfs_fsinfo *result) 2212e4f93234SChuck Lever { 2213e4f93234SChuck Lever enum nfs_stat status; 2214e4f93234SChuck Lever int error; 2215e4f93234SChuck Lever 2216bf269551SChuck Lever error = decode_nfsstat3(xdr, &status); 2217e4f93234SChuck Lever if (unlikely(error)) 2218e4f93234SChuck Lever goto out; 2219bf269551SChuck Lever error = decode_post_op_attr(xdr, result->fattr); 2220e4f93234SChuck Lever if (unlikely(error)) 2221e4f93234SChuck Lever goto out; 2222e4f93234SChuck Lever if (status != NFS3_OK) 2223e4f93234SChuck Lever goto out_status; 2224bf269551SChuck Lever error = decode_fsinfo3resok(xdr, result); 2225e4f93234SChuck Lever out: 2226e4f93234SChuck Lever return error; 2227e4f93234SChuck Lever out_status: 22285e7e5a0dSBryan Schumaker return nfs3_stat_to_errno(status); 2229e4f93234SChuck Lever } 2230e4f93234SChuck Lever 2231e4f93234SChuck Lever /* 2232e4f93234SChuck Lever * 3.3.20 PATHCONF3res 2233e4f93234SChuck Lever * 2234e4f93234SChuck Lever * struct PATHCONF3resok { 2235e4f93234SChuck Lever * post_op_attr obj_attributes; 2236e4f93234SChuck Lever * uint32 linkmax; 2237e4f93234SChuck Lever * uint32 name_max; 2238e4f93234SChuck Lever * bool no_trunc; 2239e4f93234SChuck Lever * bool chown_restricted; 2240e4f93234SChuck Lever * bool case_insensitive; 2241e4f93234SChuck Lever * bool case_preserving; 2242e4f93234SChuck Lever * }; 2243e4f93234SChuck Lever * 2244e4f93234SChuck Lever * struct PATHCONF3resfail { 2245e4f93234SChuck Lever * post_op_attr obj_attributes; 2246e4f93234SChuck Lever * }; 2247e4f93234SChuck Lever * 2248e4f93234SChuck Lever * union PATHCONF3res switch (nfsstat3 status) { 2249e4f93234SChuck Lever * case NFS3_OK: 2250e4f93234SChuck Lever * PATHCONF3resok resok; 2251e4f93234SChuck Lever * default: 2252e4f93234SChuck Lever * PATHCONF3resfail resfail; 2253e4f93234SChuck Lever * }; 2254e4f93234SChuck Lever */ 2255e4f93234SChuck Lever static int decode_pathconf3resok(struct xdr_stream *xdr, 2256e4f93234SChuck Lever struct nfs_pathconf *result) 2257e4f93234SChuck Lever { 2258e4f93234SChuck Lever __be32 *p; 2259e4f93234SChuck Lever 2260e4f93234SChuck Lever p = xdr_inline_decode(xdr, 4 * 6); 2261e4f93234SChuck Lever if (unlikely(p == NULL)) 2262e4f93234SChuck Lever goto out_overflow; 2263e4f93234SChuck Lever result->max_link = be32_to_cpup(p++); 2264e4f93234SChuck Lever result->max_namelen = be32_to_cpup(p); 2265e4f93234SChuck Lever /* ignore remaining fields */ 2266e4f93234SChuck Lever return 0; 2267e4f93234SChuck Lever out_overflow: 2268e4f93234SChuck Lever print_overflow_msg(__func__, xdr); 2269e4f93234SChuck Lever return -EIO; 2270e4f93234SChuck Lever } 2271e4f93234SChuck Lever 2272bf269551SChuck Lever static int nfs3_xdr_dec_pathconf3res(struct rpc_rqst *req, 2273bf269551SChuck Lever struct xdr_stream *xdr, 2274e4f93234SChuck Lever struct nfs_pathconf *result) 2275e4f93234SChuck Lever { 2276e4f93234SChuck Lever enum nfs_stat status; 2277e4f93234SChuck Lever int error; 2278e4f93234SChuck Lever 2279bf269551SChuck Lever error = decode_nfsstat3(xdr, &status); 2280e4f93234SChuck Lever if (unlikely(error)) 2281e4f93234SChuck Lever goto out; 2282bf269551SChuck Lever error = decode_post_op_attr(xdr, result->fattr); 2283e4f93234SChuck Lever if (unlikely(error)) 2284e4f93234SChuck Lever goto out; 2285e4f93234SChuck Lever if (status != NFS3_OK) 2286e4f93234SChuck Lever goto out_status; 2287bf269551SChuck Lever error = decode_pathconf3resok(xdr, result); 2288e4f93234SChuck Lever out: 2289e4f93234SChuck Lever return error; 2290e4f93234SChuck Lever out_status: 22915e7e5a0dSBryan Schumaker return nfs3_stat_to_errno(status); 2292e4f93234SChuck Lever } 2293e4f93234SChuck Lever 2294e4f93234SChuck Lever /* 2295e4f93234SChuck Lever * 3.3.21 COMMIT3res 2296e4f93234SChuck Lever * 2297e4f93234SChuck Lever * struct COMMIT3resok { 2298e4f93234SChuck Lever * wcc_data file_wcc; 2299e4f93234SChuck Lever * writeverf3 verf; 2300e4f93234SChuck Lever * }; 2301e4f93234SChuck Lever * 2302e4f93234SChuck Lever * struct COMMIT3resfail { 2303e4f93234SChuck Lever * wcc_data file_wcc; 2304e4f93234SChuck Lever * }; 2305e4f93234SChuck Lever * 2306e4f93234SChuck Lever * union COMMIT3res switch (nfsstat3 status) { 2307e4f93234SChuck Lever * case NFS3_OK: 2308e4f93234SChuck Lever * COMMIT3resok resok; 2309e4f93234SChuck Lever * default: 2310e4f93234SChuck Lever * COMMIT3resfail resfail; 2311e4f93234SChuck Lever * }; 2312e4f93234SChuck Lever */ 2313bf269551SChuck Lever static int nfs3_xdr_dec_commit3res(struct rpc_rqst *req, 2314bf269551SChuck Lever struct xdr_stream *xdr, 23150b7c0153SFred Isaman struct nfs_commitres *result) 2316e4f93234SChuck Lever { 2317e4f93234SChuck Lever enum nfs_stat status; 2318e4f93234SChuck Lever int error; 2319e4f93234SChuck Lever 2320bf269551SChuck Lever error = decode_nfsstat3(xdr, &status); 2321e4f93234SChuck Lever if (unlikely(error)) 2322e4f93234SChuck Lever goto out; 2323bf269551SChuck Lever error = decode_wcc_data(xdr, result->fattr); 2324e4f93234SChuck Lever if (unlikely(error)) 2325e4f93234SChuck Lever goto out; 2326e4f93234SChuck Lever if (status != NFS3_OK) 2327e4f93234SChuck Lever goto out_status; 23282f2c63bcSTrond Myklebust error = decode_writeverf3(xdr, &result->verf->verifier); 2329e4f93234SChuck Lever out: 2330e4f93234SChuck Lever return error; 2331e4f93234SChuck Lever out_status: 23325e7e5a0dSBryan Schumaker return nfs3_stat_to_errno(status); 2333e4f93234SChuck Lever } 2334e4f93234SChuck Lever 2335b7fa0554SAndreas Gruenbacher #ifdef CONFIG_NFS_V3_ACL 2336b7fa0554SAndreas Gruenbacher 2337e4f93234SChuck Lever static inline int decode_getacl3resok(struct xdr_stream *xdr, 2338e4f93234SChuck Lever struct nfs3_getaclres *result) 2339e4f93234SChuck Lever { 2340e4f93234SChuck Lever struct posix_acl **acl; 2341e4f93234SChuck Lever unsigned int *aclcnt; 2342e4f93234SChuck Lever size_t hdrlen; 2343e4f93234SChuck Lever int error; 2344e4f93234SChuck Lever 2345e4f93234SChuck Lever error = decode_post_op_attr(xdr, result->fattr); 2346e4f93234SChuck Lever if (unlikely(error)) 2347e4f93234SChuck Lever goto out; 2348e4f93234SChuck Lever error = decode_uint32(xdr, &result->mask); 2349e4f93234SChuck Lever if (unlikely(error)) 2350e4f93234SChuck Lever goto out; 2351e4f93234SChuck Lever error = -EINVAL; 2352e4f93234SChuck Lever if (result->mask & ~(NFS_ACL|NFS_ACLCNT|NFS_DFACL|NFS_DFACLCNT)) 2353e4f93234SChuck Lever goto out; 2354e4f93234SChuck Lever 23551aecca3eSTrond Myklebust hdrlen = xdr_stream_pos(xdr); 2356e4f93234SChuck Lever 2357e4f93234SChuck Lever acl = NULL; 2358e4f93234SChuck Lever if (result->mask & NFS_ACL) 2359e4f93234SChuck Lever acl = &result->acl_access; 2360e4f93234SChuck Lever aclcnt = NULL; 2361e4f93234SChuck Lever if (result->mask & NFS_ACLCNT) 2362e4f93234SChuck Lever aclcnt = &result->acl_access_count; 2363e4f93234SChuck Lever error = nfsacl_decode(xdr->buf, hdrlen, aclcnt, acl); 2364e4f93234SChuck Lever if (unlikely(error <= 0)) 2365e4f93234SChuck Lever goto out; 2366e4f93234SChuck Lever 2367e4f93234SChuck Lever acl = NULL; 2368e4f93234SChuck Lever if (result->mask & NFS_DFACL) 2369e4f93234SChuck Lever acl = &result->acl_default; 2370e4f93234SChuck Lever aclcnt = NULL; 2371e4f93234SChuck Lever if (result->mask & NFS_DFACLCNT) 2372e4f93234SChuck Lever aclcnt = &result->acl_default_count; 2373e4f93234SChuck Lever error = nfsacl_decode(xdr->buf, hdrlen + error, aclcnt, acl); 2374e4f93234SChuck Lever if (unlikely(error <= 0)) 2375e4f93234SChuck Lever return error; 2376e4f93234SChuck Lever error = 0; 2377e4f93234SChuck Lever out: 2378e4f93234SChuck Lever return error; 2379e4f93234SChuck Lever } 2380e4f93234SChuck Lever 2381bf269551SChuck Lever static int nfs3_xdr_dec_getacl3res(struct rpc_rqst *req, 2382bf269551SChuck Lever struct xdr_stream *xdr, 2383e4f93234SChuck Lever struct nfs3_getaclres *result) 2384e4f93234SChuck Lever { 2385e4f93234SChuck Lever enum nfs_stat status; 2386e4f93234SChuck Lever int error; 2387e4f93234SChuck Lever 2388bf269551SChuck Lever error = decode_nfsstat3(xdr, &status); 2389e4f93234SChuck Lever if (unlikely(error)) 2390e4f93234SChuck Lever goto out; 2391e4f93234SChuck Lever if (status != NFS3_OK) 2392e4f93234SChuck Lever goto out_default; 2393bf269551SChuck Lever error = decode_getacl3resok(xdr, result); 2394e4f93234SChuck Lever out: 2395e4f93234SChuck Lever return error; 2396e4f93234SChuck Lever out_default: 23975e7e5a0dSBryan Schumaker return nfs3_stat_to_errno(status); 2398e4f93234SChuck Lever } 2399e4f93234SChuck Lever 2400bf269551SChuck Lever static int nfs3_xdr_dec_setacl3res(struct rpc_rqst *req, 2401bf269551SChuck Lever struct xdr_stream *xdr, 2402e4f93234SChuck Lever struct nfs_fattr *result) 2403e4f93234SChuck Lever { 2404e4f93234SChuck Lever enum nfs_stat status; 2405e4f93234SChuck Lever int error; 2406e4f93234SChuck Lever 2407bf269551SChuck Lever error = decode_nfsstat3(xdr, &status); 2408e4f93234SChuck Lever if (unlikely(error)) 2409e4f93234SChuck Lever goto out; 2410e4f93234SChuck Lever if (status != NFS3_OK) 2411e4f93234SChuck Lever goto out_default; 2412bf269551SChuck Lever error = decode_post_op_attr(xdr, result); 2413e4f93234SChuck Lever out: 2414e4f93234SChuck Lever return error; 2415e4f93234SChuck Lever out_default: 24165e7e5a0dSBryan Schumaker return nfs3_stat_to_errno(status); 2417e4f93234SChuck Lever } 2418e4f93234SChuck Lever 2419b7fa0554SAndreas Gruenbacher #endif /* CONFIG_NFS_V3_ACL */ 2420b7fa0554SAndreas Gruenbacher 24215e7e5a0dSBryan Schumaker 24225e7e5a0dSBryan Schumaker /* 24235e7e5a0dSBryan Schumaker * We need to translate between nfs status return values and 24245e7e5a0dSBryan Schumaker * the local errno values which may not be the same. 24255e7e5a0dSBryan Schumaker */ 24265e7e5a0dSBryan Schumaker static const struct { 24275e7e5a0dSBryan Schumaker int stat; 24285e7e5a0dSBryan Schumaker int errno; 24295e7e5a0dSBryan Schumaker } nfs_errtbl[] = { 24305e7e5a0dSBryan Schumaker { NFS_OK, 0 }, 24315e7e5a0dSBryan Schumaker { NFSERR_PERM, -EPERM }, 24325e7e5a0dSBryan Schumaker { NFSERR_NOENT, -ENOENT }, 24335e7e5a0dSBryan Schumaker { NFSERR_IO, -errno_NFSERR_IO}, 24345e7e5a0dSBryan Schumaker { NFSERR_NXIO, -ENXIO }, 24355e7e5a0dSBryan Schumaker /* { NFSERR_EAGAIN, -EAGAIN }, */ 24365e7e5a0dSBryan Schumaker { NFSERR_ACCES, -EACCES }, 24375e7e5a0dSBryan Schumaker { NFSERR_EXIST, -EEXIST }, 24385e7e5a0dSBryan Schumaker { NFSERR_XDEV, -EXDEV }, 24395e7e5a0dSBryan Schumaker { NFSERR_NODEV, -ENODEV }, 24405e7e5a0dSBryan Schumaker { NFSERR_NOTDIR, -ENOTDIR }, 24415e7e5a0dSBryan Schumaker { NFSERR_ISDIR, -EISDIR }, 24425e7e5a0dSBryan Schumaker { NFSERR_INVAL, -EINVAL }, 24435e7e5a0dSBryan Schumaker { NFSERR_FBIG, -EFBIG }, 24445e7e5a0dSBryan Schumaker { NFSERR_NOSPC, -ENOSPC }, 24455e7e5a0dSBryan Schumaker { NFSERR_ROFS, -EROFS }, 24465e7e5a0dSBryan Schumaker { NFSERR_MLINK, -EMLINK }, 24475e7e5a0dSBryan Schumaker { NFSERR_NAMETOOLONG, -ENAMETOOLONG }, 24485e7e5a0dSBryan Schumaker { NFSERR_NOTEMPTY, -ENOTEMPTY }, 24495e7e5a0dSBryan Schumaker { NFSERR_DQUOT, -EDQUOT }, 24505e7e5a0dSBryan Schumaker { NFSERR_STALE, -ESTALE }, 24515e7e5a0dSBryan Schumaker { NFSERR_REMOTE, -EREMOTE }, 24525e7e5a0dSBryan Schumaker #ifdef EWFLUSH 24535e7e5a0dSBryan Schumaker { NFSERR_WFLUSH, -EWFLUSH }, 24545e7e5a0dSBryan Schumaker #endif 24555e7e5a0dSBryan Schumaker { NFSERR_BADHANDLE, -EBADHANDLE }, 24565e7e5a0dSBryan Schumaker { NFSERR_NOT_SYNC, -ENOTSYNC }, 24575e7e5a0dSBryan Schumaker { NFSERR_BAD_COOKIE, -EBADCOOKIE }, 24585e7e5a0dSBryan Schumaker { NFSERR_NOTSUPP, -ENOTSUPP }, 24595e7e5a0dSBryan Schumaker { NFSERR_TOOSMALL, -ETOOSMALL }, 24605e7e5a0dSBryan Schumaker { NFSERR_SERVERFAULT, -EREMOTEIO }, 24615e7e5a0dSBryan Schumaker { NFSERR_BADTYPE, -EBADTYPE }, 24625e7e5a0dSBryan Schumaker { NFSERR_JUKEBOX, -EJUKEBOX }, 24635e7e5a0dSBryan Schumaker { -1, -EIO } 24645e7e5a0dSBryan Schumaker }; 24655e7e5a0dSBryan Schumaker 24665e7e5a0dSBryan Schumaker /** 24675e7e5a0dSBryan Schumaker * nfs3_stat_to_errno - convert an NFS status code to a local errno 24685e7e5a0dSBryan Schumaker * @status: NFS status code to convert 24695e7e5a0dSBryan Schumaker * 24705e7e5a0dSBryan Schumaker * Returns a local errno value, or -EIO if the NFS status code is 24715e7e5a0dSBryan Schumaker * not recognized. This function is used jointly by NFSv2 and NFSv3. 24725e7e5a0dSBryan Schumaker */ 24735e7e5a0dSBryan Schumaker static int nfs3_stat_to_errno(enum nfs_stat status) 24745e7e5a0dSBryan Schumaker { 24755e7e5a0dSBryan Schumaker int i; 24765e7e5a0dSBryan Schumaker 24775e7e5a0dSBryan Schumaker for (i = 0; nfs_errtbl[i].stat != -1; i++) { 24785e7e5a0dSBryan Schumaker if (nfs_errtbl[i].stat == (int)status) 24795e7e5a0dSBryan Schumaker return nfs_errtbl[i].errno; 24805e7e5a0dSBryan Schumaker } 24815e7e5a0dSBryan Schumaker dprintk("NFS: Unrecognized nfs status value: %u\n", status); 24825e7e5a0dSBryan Schumaker return nfs_errtbl[i].errno; 24835e7e5a0dSBryan Schumaker } 24845e7e5a0dSBryan Schumaker 24855e7e5a0dSBryan Schumaker 24861da177e4SLinus Torvalds #define PROC(proc, argtype, restype, timer) \ 24871da177e4SLinus Torvalds [NFS3PROC_##proc] = { \ 24881da177e4SLinus Torvalds .p_proc = NFS3PROC_##proc, \ 24899f06c719SChuck Lever .p_encode = (kxdreproc_t)nfs3_xdr_enc_##argtype##3args, \ 2490bf269551SChuck Lever .p_decode = (kxdrdproc_t)nfs3_xdr_dec_##restype##3res, \ 2491ad96b5b5SChuck Lever .p_arglen = NFS3_##argtype##args_sz, \ 2492f5fc3c50SChuck Lever .p_replen = NFS3_##restype##res_sz, \ 2493cc0175c1SChuck Lever .p_timer = timer, \ 2494cc0175c1SChuck Lever .p_statidx = NFS3PROC_##proc, \ 2495cc0175c1SChuck Lever .p_name = #proc, \ 24961da177e4SLinus Torvalds } 24971da177e4SLinus Torvalds 24981da177e4SLinus Torvalds struct rpc_procinfo nfs3_procedures[] = { 2499f5fc3c50SChuck Lever PROC(GETATTR, getattr, getattr, 1), 2500f5fc3c50SChuck Lever PROC(SETATTR, setattr, setattr, 0), 2501f5fc3c50SChuck Lever PROC(LOOKUP, lookup, lookup, 2), 2502f5fc3c50SChuck Lever PROC(ACCESS, access, access, 1), 2503f5fc3c50SChuck Lever PROC(READLINK, readlink, readlink, 3), 2504f5fc3c50SChuck Lever PROC(READ, read, read, 3), 2505f5fc3c50SChuck Lever PROC(WRITE, write, write, 4), 2506f5fc3c50SChuck Lever PROC(CREATE, create, create, 0), 2507f5fc3c50SChuck Lever PROC(MKDIR, mkdir, create, 0), 2508f5fc3c50SChuck Lever PROC(SYMLINK, symlink, create, 0), 2509f5fc3c50SChuck Lever PROC(MKNOD, mknod, create, 0), 2510f5fc3c50SChuck Lever PROC(REMOVE, remove, remove, 0), 2511f5fc3c50SChuck Lever PROC(RMDIR, lookup, setattr, 0), 2512f5fc3c50SChuck Lever PROC(RENAME, rename, rename, 0), 2513f5fc3c50SChuck Lever PROC(LINK, link, link, 0), 2514f5fc3c50SChuck Lever PROC(READDIR, readdir, readdir, 3), 2515f5fc3c50SChuck Lever PROC(READDIRPLUS, readdirplus, readdir, 3), 2516f5fc3c50SChuck Lever PROC(FSSTAT, getattr, fsstat, 0), 2517f5fc3c50SChuck Lever PROC(FSINFO, getattr, fsinfo, 0), 2518f5fc3c50SChuck Lever PROC(PATHCONF, getattr, pathconf, 0), 2519f5fc3c50SChuck Lever PROC(COMMIT, commit, commit, 5), 25201da177e4SLinus Torvalds }; 25211da177e4SLinus Torvalds 2522a613fa16STrond Myklebust const struct rpc_version nfs_version3 = { 25231da177e4SLinus Torvalds .number = 3, 2524e8c96f8cSTobias Klauser .nrprocs = ARRAY_SIZE(nfs3_procedures), 25251da177e4SLinus Torvalds .procs = nfs3_procedures 25261da177e4SLinus Torvalds }; 25271da177e4SLinus Torvalds 2528b7fa0554SAndreas Gruenbacher #ifdef CONFIG_NFS_V3_ACL 2529b7fa0554SAndreas Gruenbacher static struct rpc_procinfo nfs3_acl_procedures[] = { 2530b7fa0554SAndreas Gruenbacher [ACLPROC3_GETACL] = { 2531b7fa0554SAndreas Gruenbacher .p_proc = ACLPROC3_GETACL, 25329f06c719SChuck Lever .p_encode = (kxdreproc_t)nfs3_xdr_enc_getacl3args, 2533bf269551SChuck Lever .p_decode = (kxdrdproc_t)nfs3_xdr_dec_getacl3res, 25342bea90d4SChuck Lever .p_arglen = ACL3_getaclargs_sz, 25352bea90d4SChuck Lever .p_replen = ACL3_getaclres_sz, 2536b7fa0554SAndreas Gruenbacher .p_timer = 1, 2537cc0175c1SChuck Lever .p_name = "GETACL", 2538b7fa0554SAndreas Gruenbacher }, 2539b7fa0554SAndreas Gruenbacher [ACLPROC3_SETACL] = { 2540b7fa0554SAndreas Gruenbacher .p_proc = ACLPROC3_SETACL, 25419f06c719SChuck Lever .p_encode = (kxdreproc_t)nfs3_xdr_enc_setacl3args, 2542bf269551SChuck Lever .p_decode = (kxdrdproc_t)nfs3_xdr_dec_setacl3res, 25432bea90d4SChuck Lever .p_arglen = ACL3_setaclargs_sz, 25442bea90d4SChuck Lever .p_replen = ACL3_setaclres_sz, 2545b7fa0554SAndreas Gruenbacher .p_timer = 0, 2546cc0175c1SChuck Lever .p_name = "SETACL", 2547b7fa0554SAndreas Gruenbacher }, 2548b7fa0554SAndreas Gruenbacher }; 2549b7fa0554SAndreas Gruenbacher 2550a613fa16STrond Myklebust const struct rpc_version nfsacl_version3 = { 2551b7fa0554SAndreas Gruenbacher .number = 3, 2552b7fa0554SAndreas Gruenbacher .nrprocs = sizeof(nfs3_acl_procedures)/ 2553b7fa0554SAndreas Gruenbacher sizeof(nfs3_acl_procedures[0]), 2554b7fa0554SAndreas Gruenbacher .procs = nfs3_acl_procedures, 2555b7fa0554SAndreas Gruenbacher }; 2556b7fa0554SAndreas Gruenbacher #endif /* CONFIG_NFS_V3_ACL */ 2557