11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * linux/fs/nfs/nfs2xdr.c 31da177e4SLinus Torvalds * 41da177e4SLinus Torvalds * XDR functions to encode/decode NFS RPC arguments and results. 51da177e4SLinus Torvalds * 61da177e4SLinus Torvalds * Copyright (C) 1992, 1993, 1994 Rick Sladkey 71da177e4SLinus Torvalds * Copyright (C) 1996 Olaf Kirch 81da177e4SLinus Torvalds * 04 Aug 1998 Ion Badulescu <ionut@cs.columbia.edu> 91da177e4SLinus Torvalds * FIFO's need special handling in NFSv2 101da177e4SLinus Torvalds */ 111da177e4SLinus Torvalds 121da177e4SLinus Torvalds #include <linux/param.h> 131da177e4SLinus Torvalds #include <linux/time.h> 141da177e4SLinus Torvalds #include <linux/mm.h> 151da177e4SLinus Torvalds #include <linux/slab.h> 161da177e4SLinus Torvalds #include <linux/utsname.h> 171da177e4SLinus Torvalds #include <linux/errno.h> 181da177e4SLinus Torvalds #include <linux/string.h> 191da177e4SLinus Torvalds #include <linux/in.h> 201da177e4SLinus Torvalds #include <linux/pagemap.h> 211da177e4SLinus Torvalds #include <linux/proc_fs.h> 221da177e4SLinus Torvalds #include <linux/sunrpc/clnt.h> 231da177e4SLinus Torvalds #include <linux/nfs.h> 241da177e4SLinus Torvalds #include <linux/nfs2.h> 251da177e4SLinus Torvalds #include <linux/nfs_fs.h> 26816724e6STrond Myklebust #include "internal.h" 271da177e4SLinus Torvalds 281da177e4SLinus Torvalds #define NFSDBG_FACILITY NFSDBG_XDR 291da177e4SLinus Torvalds /* #define NFS_PARANOIA 1 */ 301da177e4SLinus Torvalds 311da177e4SLinus Torvalds /* Mapping from NFS error code to "errno" error code. */ 321da177e4SLinus Torvalds #define errno_NFSERR_IO EIO 331da177e4SLinus Torvalds 341da177e4SLinus Torvalds /* 351da177e4SLinus Torvalds * Declare the space requirements for NFS arguments and replies as 361da177e4SLinus Torvalds * number of 32bit-words 371da177e4SLinus Torvalds */ 381da177e4SLinus Torvalds #define NFS_fhandle_sz (8) 391da177e4SLinus Torvalds #define NFS_sattr_sz (8) 401da177e4SLinus Torvalds #define NFS_filename_sz (1+(NFS2_MAXNAMLEN>>2)) 411da177e4SLinus Torvalds #define NFS_path_sz (1+(NFS2_MAXPATHLEN>>2)) 421da177e4SLinus Torvalds #define NFS_fattr_sz (17) 431da177e4SLinus Torvalds #define NFS_info_sz (5) 441da177e4SLinus Torvalds #define NFS_entry_sz (NFS_filename_sz+3) 451da177e4SLinus Torvalds 461da177e4SLinus Torvalds #define NFS_diropargs_sz (NFS_fhandle_sz+NFS_filename_sz) 471da177e4SLinus Torvalds #define NFS_sattrargs_sz (NFS_fhandle_sz+NFS_sattr_sz) 481da177e4SLinus Torvalds #define NFS_readlinkargs_sz (NFS_fhandle_sz) 491da177e4SLinus Torvalds #define NFS_readargs_sz (NFS_fhandle_sz+3) 501da177e4SLinus Torvalds #define NFS_writeargs_sz (NFS_fhandle_sz+4) 511da177e4SLinus Torvalds #define NFS_createargs_sz (NFS_diropargs_sz+NFS_sattr_sz) 521da177e4SLinus Torvalds #define NFS_renameargs_sz (NFS_diropargs_sz+NFS_diropargs_sz) 531da177e4SLinus Torvalds #define NFS_linkargs_sz (NFS_fhandle_sz+NFS_diropargs_sz) 5494a6d753SChuck Lever #define NFS_symlinkargs_sz (NFS_diropargs_sz+1+NFS_sattr_sz) 551da177e4SLinus Torvalds #define NFS_readdirargs_sz (NFS_fhandle_sz+2) 561da177e4SLinus Torvalds 571da177e4SLinus Torvalds #define NFS_attrstat_sz (1+NFS_fattr_sz) 581da177e4SLinus Torvalds #define NFS_diropres_sz (1+NFS_fhandle_sz+NFS_fattr_sz) 591da177e4SLinus Torvalds #define NFS_readlinkres_sz (2) 601da177e4SLinus Torvalds #define NFS_readres_sz (1+NFS_fattr_sz+1) 611da177e4SLinus Torvalds #define NFS_writeres_sz (NFS_attrstat_sz) 621da177e4SLinus Torvalds #define NFS_stat_sz (1) 631da177e4SLinus Torvalds #define NFS_readdirres_sz (1) 641da177e4SLinus Torvalds #define NFS_statfsres_sz (1+NFS_info_sz) 651da177e4SLinus Torvalds 661da177e4SLinus Torvalds /* 671da177e4SLinus Torvalds * Common NFS XDR functions as inlines 681da177e4SLinus Torvalds */ 691da177e4SLinus Torvalds static inline u32 * 701da177e4SLinus Torvalds xdr_encode_fhandle(u32 *p, struct nfs_fh *fhandle) 711da177e4SLinus Torvalds { 721da177e4SLinus Torvalds memcpy(p, fhandle->data, NFS2_FHSIZE); 731da177e4SLinus Torvalds return p + XDR_QUADLEN(NFS2_FHSIZE); 741da177e4SLinus Torvalds } 751da177e4SLinus Torvalds 761da177e4SLinus Torvalds static inline u32 * 771da177e4SLinus Torvalds xdr_decode_fhandle(u32 *p, struct nfs_fh *fhandle) 781da177e4SLinus Torvalds { 791da177e4SLinus Torvalds /* NFSv2 handles have a fixed length */ 801da177e4SLinus Torvalds fhandle->size = NFS2_FHSIZE; 811da177e4SLinus Torvalds memcpy(fhandle->data, p, NFS2_FHSIZE); 821da177e4SLinus Torvalds return p + XDR_QUADLEN(NFS2_FHSIZE); 831da177e4SLinus Torvalds } 841da177e4SLinus Torvalds 851da177e4SLinus Torvalds static inline u32* 861da177e4SLinus Torvalds xdr_encode_time(u32 *p, struct timespec *timep) 871da177e4SLinus Torvalds { 881da177e4SLinus Torvalds *p++ = htonl(timep->tv_sec); 891da177e4SLinus Torvalds /* Convert nanoseconds into microseconds */ 901da177e4SLinus Torvalds *p++ = htonl(timep->tv_nsec ? timep->tv_nsec / 1000 : 0); 911da177e4SLinus Torvalds return p; 921da177e4SLinus Torvalds } 931da177e4SLinus Torvalds 941da177e4SLinus Torvalds static inline u32* 951da177e4SLinus Torvalds xdr_encode_current_server_time(u32 *p, struct timespec *timep) 961da177e4SLinus Torvalds { 971da177e4SLinus Torvalds /* 981da177e4SLinus Torvalds * Passing the invalid value useconds=1000000 is a 991da177e4SLinus Torvalds * Sun convention for "set to current server time". 1001da177e4SLinus Torvalds * It's needed to make permissions checks for the 1011da177e4SLinus Torvalds * "touch" program across v2 mounts to Solaris and 1021da177e4SLinus Torvalds * Irix boxes work correctly. See description of 1031da177e4SLinus Torvalds * sattr in section 6.1 of "NFS Illustrated" by 1041da177e4SLinus Torvalds * Brent Callaghan, Addison-Wesley, ISBN 0-201-32750-5 1051da177e4SLinus Torvalds */ 1061da177e4SLinus Torvalds *p++ = htonl(timep->tv_sec); 1071da177e4SLinus Torvalds *p++ = htonl(1000000); 1081da177e4SLinus Torvalds return p; 1091da177e4SLinus Torvalds } 1101da177e4SLinus Torvalds 1111da177e4SLinus Torvalds static inline u32* 1121da177e4SLinus Torvalds xdr_decode_time(u32 *p, struct timespec *timep) 1131da177e4SLinus Torvalds { 1141da177e4SLinus Torvalds timep->tv_sec = ntohl(*p++); 1151da177e4SLinus Torvalds /* Convert microseconds into nanoseconds */ 1161da177e4SLinus Torvalds timep->tv_nsec = ntohl(*p++) * 1000; 1171da177e4SLinus Torvalds return p; 1181da177e4SLinus Torvalds } 1191da177e4SLinus Torvalds 1201da177e4SLinus Torvalds static u32 * 1211da177e4SLinus Torvalds xdr_decode_fattr(u32 *p, struct nfs_fattr *fattr) 1221da177e4SLinus Torvalds { 1231da177e4SLinus Torvalds u32 rdev; 1241da177e4SLinus Torvalds fattr->type = (enum nfs_ftype) ntohl(*p++); 1251da177e4SLinus Torvalds fattr->mode = ntohl(*p++); 1261da177e4SLinus Torvalds fattr->nlink = ntohl(*p++); 1271da177e4SLinus Torvalds fattr->uid = ntohl(*p++); 1281da177e4SLinus Torvalds fattr->gid = ntohl(*p++); 1291da177e4SLinus Torvalds fattr->size = ntohl(*p++); 1301da177e4SLinus Torvalds fattr->du.nfs2.blocksize = ntohl(*p++); 1311da177e4SLinus Torvalds rdev = ntohl(*p++); 1321da177e4SLinus Torvalds fattr->du.nfs2.blocks = ntohl(*p++); 1338b4bdcf8STrond Myklebust fattr->fsid.major = ntohl(*p++); 1348b4bdcf8STrond Myklebust fattr->fsid.minor = 0; 1351da177e4SLinus Torvalds fattr->fileid = ntohl(*p++); 1361da177e4SLinus Torvalds p = xdr_decode_time(p, &fattr->atime); 1371da177e4SLinus Torvalds p = xdr_decode_time(p, &fattr->mtime); 1381da177e4SLinus Torvalds p = xdr_decode_time(p, &fattr->ctime); 1391da177e4SLinus Torvalds fattr->valid |= NFS_ATTR_FATTR; 1401da177e4SLinus Torvalds fattr->rdev = new_decode_dev(rdev); 1411da177e4SLinus Torvalds if (fattr->type == NFCHR && rdev == NFS2_FIFO_DEV) { 1421da177e4SLinus Torvalds fattr->type = NFFIFO; 1431da177e4SLinus Torvalds fattr->mode = (fattr->mode & ~S_IFMT) | S_IFIFO; 1441da177e4SLinus Torvalds fattr->rdev = 0; 1451da177e4SLinus Torvalds } 1461da177e4SLinus Torvalds return p; 1471da177e4SLinus Torvalds } 1481da177e4SLinus Torvalds 1491da177e4SLinus Torvalds static inline u32 * 1501da177e4SLinus Torvalds xdr_encode_sattr(u32 *p, struct iattr *attr) 1511da177e4SLinus Torvalds { 152eadb8c14STrond Myklebust const u32 not_set = __constant_htonl(0xFFFFFFFF); 153eadb8c14STrond Myklebust 154eadb8c14STrond Myklebust *p++ = (attr->ia_valid & ATTR_MODE) ? htonl(attr->ia_mode) : not_set; 155eadb8c14STrond Myklebust *p++ = (attr->ia_valid & ATTR_UID) ? htonl(attr->ia_uid) : not_set; 156eadb8c14STrond Myklebust *p++ = (attr->ia_valid & ATTR_GID) ? htonl(attr->ia_gid) : not_set; 157eadb8c14STrond Myklebust *p++ = (attr->ia_valid & ATTR_SIZE) ? htonl(attr->ia_size) : not_set; 1581da177e4SLinus Torvalds 1591da177e4SLinus Torvalds if (attr->ia_valid & ATTR_ATIME_SET) { 1601da177e4SLinus Torvalds p = xdr_encode_time(p, &attr->ia_atime); 1611da177e4SLinus Torvalds } else if (attr->ia_valid & ATTR_ATIME) { 1621da177e4SLinus Torvalds p = xdr_encode_current_server_time(p, &attr->ia_atime); 1631da177e4SLinus Torvalds } else { 164eadb8c14STrond Myklebust *p++ = not_set; 165eadb8c14STrond Myklebust *p++ = not_set; 1661da177e4SLinus Torvalds } 1671da177e4SLinus Torvalds 1681da177e4SLinus Torvalds if (attr->ia_valid & ATTR_MTIME_SET) { 1691da177e4SLinus Torvalds p = xdr_encode_time(p, &attr->ia_mtime); 1701da177e4SLinus Torvalds } else if (attr->ia_valid & ATTR_MTIME) { 1711da177e4SLinus Torvalds p = xdr_encode_current_server_time(p, &attr->ia_mtime); 1721da177e4SLinus Torvalds } else { 173eadb8c14STrond Myklebust *p++ = not_set; 174eadb8c14STrond Myklebust *p++ = not_set; 1751da177e4SLinus Torvalds } 1761da177e4SLinus Torvalds return p; 1771da177e4SLinus Torvalds } 1781da177e4SLinus Torvalds 1791da177e4SLinus Torvalds /* 1801da177e4SLinus Torvalds * NFS encode functions 1811da177e4SLinus Torvalds */ 1821da177e4SLinus Torvalds /* 1831da177e4SLinus Torvalds * Encode file handle argument 1841da177e4SLinus Torvalds * GETATTR, READLINK, STATFS 1851da177e4SLinus Torvalds */ 1861da177e4SLinus Torvalds static int 1871da177e4SLinus Torvalds nfs_xdr_fhandle(struct rpc_rqst *req, u32 *p, struct nfs_fh *fh) 1881da177e4SLinus Torvalds { 1891da177e4SLinus Torvalds p = xdr_encode_fhandle(p, fh); 1901da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 1911da177e4SLinus Torvalds return 0; 1921da177e4SLinus Torvalds } 1931da177e4SLinus Torvalds 1941da177e4SLinus Torvalds /* 1951da177e4SLinus Torvalds * Encode SETATTR arguments 1961da177e4SLinus Torvalds */ 1971da177e4SLinus Torvalds static int 1981da177e4SLinus Torvalds nfs_xdr_sattrargs(struct rpc_rqst *req, u32 *p, struct nfs_sattrargs *args) 1991da177e4SLinus Torvalds { 2001da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fh); 2011da177e4SLinus Torvalds p = xdr_encode_sattr(p, args->sattr); 2021da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 2031da177e4SLinus Torvalds return 0; 2041da177e4SLinus Torvalds } 2051da177e4SLinus Torvalds 2061da177e4SLinus Torvalds /* 2071da177e4SLinus Torvalds * Encode directory ops argument 2081da177e4SLinus Torvalds * LOOKUP, REMOVE, RMDIR 2091da177e4SLinus Torvalds */ 2101da177e4SLinus Torvalds static int 2111da177e4SLinus Torvalds nfs_xdr_diropargs(struct rpc_rqst *req, u32 *p, struct nfs_diropargs *args) 2121da177e4SLinus Torvalds { 2131da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fh); 2141da177e4SLinus Torvalds p = xdr_encode_array(p, args->name, args->len); 2151da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 2161da177e4SLinus Torvalds return 0; 2171da177e4SLinus Torvalds } 2181da177e4SLinus Torvalds 2191da177e4SLinus Torvalds /* 2201da177e4SLinus Torvalds * Arguments to a READ call. Since we read data directly into the page 2211da177e4SLinus Torvalds * cache, we also set up the reply iovec here so that iov[1] points 2221da177e4SLinus Torvalds * exactly to the page we want to fetch. 2231da177e4SLinus Torvalds */ 2241da177e4SLinus Torvalds static int 2251da177e4SLinus Torvalds nfs_xdr_readargs(struct rpc_rqst *req, u32 *p, struct nfs_readargs *args) 2261da177e4SLinus Torvalds { 2271da177e4SLinus Torvalds struct rpc_auth *auth = req->rq_task->tk_auth; 2281da177e4SLinus Torvalds unsigned int replen; 2291da177e4SLinus Torvalds u32 offset = (u32)args->offset; 2301da177e4SLinus Torvalds u32 count = args->count; 2311da177e4SLinus Torvalds 2321da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fh); 2331da177e4SLinus Torvalds *p++ = htonl(offset); 2341da177e4SLinus Torvalds *p++ = htonl(count); 2351da177e4SLinus Torvalds *p++ = htonl(count); 2361da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 2371da177e4SLinus Torvalds 2381da177e4SLinus Torvalds /* Inline the page array */ 2391da177e4SLinus Torvalds replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS_readres_sz) << 2; 2401da177e4SLinus Torvalds xdr_inline_pages(&req->rq_rcv_buf, replen, 2411da177e4SLinus Torvalds args->pages, args->pgbase, count); 2421da177e4SLinus Torvalds return 0; 2431da177e4SLinus Torvalds } 2441da177e4SLinus Torvalds 2451da177e4SLinus Torvalds /* 2461da177e4SLinus Torvalds * Decode READ reply 2471da177e4SLinus Torvalds */ 2481da177e4SLinus Torvalds static int 2491da177e4SLinus Torvalds nfs_xdr_readres(struct rpc_rqst *req, u32 *p, struct nfs_readres *res) 2501da177e4SLinus Torvalds { 2511da177e4SLinus Torvalds struct kvec *iov = req->rq_rcv_buf.head; 2521da177e4SLinus Torvalds int status, count, recvd, hdrlen; 2531da177e4SLinus Torvalds 2541da177e4SLinus Torvalds if ((status = ntohl(*p++))) 2551da177e4SLinus Torvalds return -nfs_stat_to_errno(status); 2561da177e4SLinus Torvalds p = xdr_decode_fattr(p, res->fattr); 2571da177e4SLinus Torvalds 2581da177e4SLinus Torvalds count = ntohl(*p++); 2591da177e4SLinus Torvalds res->eof = 0; 2601da177e4SLinus Torvalds hdrlen = (u8 *) p - (u8 *) iov->iov_base; 2611da177e4SLinus Torvalds if (iov->iov_len < hdrlen) { 2621da177e4SLinus Torvalds printk(KERN_WARNING "NFS: READ reply header overflowed:" 2631da177e4SLinus Torvalds "length %d > %Zu\n", hdrlen, iov->iov_len); 2641da177e4SLinus Torvalds return -errno_NFSERR_IO; 2651da177e4SLinus Torvalds } else if (iov->iov_len != hdrlen) { 2661da177e4SLinus Torvalds dprintk("NFS: READ header is short. iovec will be shifted.\n"); 2671da177e4SLinus Torvalds xdr_shift_buf(&req->rq_rcv_buf, iov->iov_len - hdrlen); 2681da177e4SLinus Torvalds } 2691da177e4SLinus Torvalds 2701da177e4SLinus Torvalds recvd = req->rq_rcv_buf.len - hdrlen; 2711da177e4SLinus Torvalds if (count > recvd) { 2721da177e4SLinus Torvalds printk(KERN_WARNING "NFS: server cheating in read reply: " 2731da177e4SLinus Torvalds "count %d > recvd %d\n", count, recvd); 2741da177e4SLinus Torvalds count = recvd; 2751da177e4SLinus Torvalds } 2761da177e4SLinus Torvalds 2771da177e4SLinus Torvalds dprintk("RPC: readres OK count %d\n", count); 2781da177e4SLinus Torvalds if (count < res->count) 2791da177e4SLinus Torvalds res->count = count; 2801da177e4SLinus Torvalds 2811da177e4SLinus Torvalds return count; 2821da177e4SLinus Torvalds } 2831da177e4SLinus Torvalds 2841da177e4SLinus Torvalds 2851da177e4SLinus Torvalds /* 2861da177e4SLinus Torvalds * Write arguments. Splice the buffer to be written into the iovec. 2871da177e4SLinus Torvalds */ 2881da177e4SLinus Torvalds static int 2891da177e4SLinus Torvalds nfs_xdr_writeargs(struct rpc_rqst *req, u32 *p, struct nfs_writeargs *args) 2901da177e4SLinus Torvalds { 2911da177e4SLinus Torvalds struct xdr_buf *sndbuf = &req->rq_snd_buf; 2921da177e4SLinus Torvalds u32 offset = (u32)args->offset; 2931da177e4SLinus Torvalds u32 count = args->count; 2941da177e4SLinus Torvalds 2951da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fh); 2961da177e4SLinus Torvalds *p++ = htonl(offset); 2971da177e4SLinus Torvalds *p++ = htonl(offset); 2981da177e4SLinus Torvalds *p++ = htonl(count); 2991da177e4SLinus Torvalds *p++ = htonl(count); 3001da177e4SLinus Torvalds sndbuf->len = xdr_adjust_iovec(sndbuf->head, p); 3011da177e4SLinus Torvalds 3021da177e4SLinus Torvalds /* Copy the page array */ 3031da177e4SLinus Torvalds xdr_encode_pages(sndbuf, args->pages, args->pgbase, count); 3041da177e4SLinus Torvalds return 0; 3051da177e4SLinus Torvalds } 3061da177e4SLinus Torvalds 3071da177e4SLinus Torvalds /* 3081da177e4SLinus Torvalds * Encode create arguments 3091da177e4SLinus Torvalds * CREATE, MKDIR 3101da177e4SLinus Torvalds */ 3111da177e4SLinus Torvalds static int 3121da177e4SLinus Torvalds nfs_xdr_createargs(struct rpc_rqst *req, u32 *p, struct nfs_createargs *args) 3131da177e4SLinus Torvalds { 3141da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fh); 3151da177e4SLinus Torvalds p = xdr_encode_array(p, args->name, args->len); 3161da177e4SLinus Torvalds p = xdr_encode_sattr(p, args->sattr); 3171da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 3181da177e4SLinus Torvalds return 0; 3191da177e4SLinus Torvalds } 3201da177e4SLinus Torvalds 3211da177e4SLinus Torvalds /* 3221da177e4SLinus Torvalds * Encode RENAME arguments 3231da177e4SLinus Torvalds */ 3241da177e4SLinus Torvalds static int 3251da177e4SLinus Torvalds nfs_xdr_renameargs(struct rpc_rqst *req, u32 *p, struct nfs_renameargs *args) 3261da177e4SLinus Torvalds { 3271da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fromfh); 3281da177e4SLinus Torvalds p = xdr_encode_array(p, args->fromname, args->fromlen); 3291da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->tofh); 3301da177e4SLinus Torvalds p = xdr_encode_array(p, args->toname, args->tolen); 3311da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 3321da177e4SLinus Torvalds return 0; 3331da177e4SLinus Torvalds } 3341da177e4SLinus Torvalds 3351da177e4SLinus Torvalds /* 3361da177e4SLinus Torvalds * Encode LINK arguments 3371da177e4SLinus Torvalds */ 3381da177e4SLinus Torvalds static int 3391da177e4SLinus Torvalds nfs_xdr_linkargs(struct rpc_rqst *req, u32 *p, struct nfs_linkargs *args) 3401da177e4SLinus Torvalds { 3411da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fromfh); 3421da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->tofh); 3431da177e4SLinus Torvalds p = xdr_encode_array(p, args->toname, args->tolen); 3441da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 3451da177e4SLinus Torvalds return 0; 3461da177e4SLinus Torvalds } 3471da177e4SLinus Torvalds 3481da177e4SLinus Torvalds /* 3491da177e4SLinus Torvalds * Encode SYMLINK arguments 3501da177e4SLinus Torvalds */ 3511da177e4SLinus Torvalds static int 3521da177e4SLinus Torvalds nfs_xdr_symlinkargs(struct rpc_rqst *req, u32 *p, struct nfs_symlinkargs *args) 3531da177e4SLinus Torvalds { 35494a6d753SChuck Lever struct xdr_buf *sndbuf = &req->rq_snd_buf; 35594a6d753SChuck Lever size_t pad; 35694a6d753SChuck Lever 3571da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fromfh); 3581da177e4SLinus Torvalds p = xdr_encode_array(p, args->fromname, args->fromlen); 35994a6d753SChuck Lever *p++ = htonl(args->pathlen); 36094a6d753SChuck Lever sndbuf->len = xdr_adjust_iovec(sndbuf->head, p); 36194a6d753SChuck Lever 36294a6d753SChuck Lever xdr_encode_pages(sndbuf, args->pages, 0, args->pathlen); 36394a6d753SChuck Lever 36494a6d753SChuck Lever /* 36594a6d753SChuck Lever * xdr_encode_pages may have added a few bytes to ensure the 36694a6d753SChuck Lever * pathname ends on a 4-byte boundary. Start encoding the 36794a6d753SChuck Lever * attributes after the pad bytes. 36894a6d753SChuck Lever */ 36994a6d753SChuck Lever pad = sndbuf->tail->iov_len; 37094a6d753SChuck Lever if (pad > 0) 37194a6d753SChuck Lever p++; 3721da177e4SLinus Torvalds p = xdr_encode_sattr(p, args->sattr); 37394a6d753SChuck Lever sndbuf->len += xdr_adjust_iovec(sndbuf->tail, p) - pad; 3741da177e4SLinus Torvalds return 0; 3751da177e4SLinus Torvalds } 3761da177e4SLinus Torvalds 3771da177e4SLinus Torvalds /* 3781da177e4SLinus Torvalds * Encode arguments to readdir call 3791da177e4SLinus Torvalds */ 3801da177e4SLinus Torvalds static int 3811da177e4SLinus Torvalds nfs_xdr_readdirargs(struct rpc_rqst *req, u32 *p, struct nfs_readdirargs *args) 3821da177e4SLinus Torvalds { 3831da177e4SLinus Torvalds struct rpc_task *task = req->rq_task; 3841da177e4SLinus Torvalds struct rpc_auth *auth = task->tk_auth; 3851da177e4SLinus Torvalds unsigned int replen; 3861da177e4SLinus Torvalds u32 count = args->count; 3871da177e4SLinus Torvalds 3881da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fh); 3891da177e4SLinus Torvalds *p++ = htonl(args->cookie); 3901da177e4SLinus Torvalds *p++ = htonl(count); /* see above */ 3911da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 3921da177e4SLinus Torvalds 3931da177e4SLinus Torvalds /* Inline the page array */ 3941da177e4SLinus Torvalds replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS_readdirres_sz) << 2; 3951da177e4SLinus Torvalds xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, 0, count); 3961da177e4SLinus Torvalds return 0; 3971da177e4SLinus Torvalds } 3981da177e4SLinus Torvalds 3991da177e4SLinus Torvalds /* 4001da177e4SLinus Torvalds * Decode the result of a readdir call. 4011da177e4SLinus Torvalds * We're not really decoding anymore, we just leave the buffer untouched 4021da177e4SLinus Torvalds * and only check that it is syntactically correct. 4031da177e4SLinus Torvalds * The real decoding happens in nfs_decode_entry below, called directly 4041da177e4SLinus Torvalds * from nfs_readdir for each entry. 4051da177e4SLinus Torvalds */ 4061da177e4SLinus Torvalds static int 4071da177e4SLinus Torvalds nfs_xdr_readdirres(struct rpc_rqst *req, u32 *p, void *dummy) 4081da177e4SLinus Torvalds { 4091da177e4SLinus Torvalds struct xdr_buf *rcvbuf = &req->rq_rcv_buf; 4101da177e4SLinus Torvalds struct kvec *iov = rcvbuf->head; 4111da177e4SLinus Torvalds struct page **page; 4121da177e4SLinus Torvalds int hdrlen, recvd; 4131da177e4SLinus Torvalds int status, nr; 4141da177e4SLinus Torvalds unsigned int len, pglen; 4151da177e4SLinus Torvalds u32 *end, *entry, *kaddr; 4161da177e4SLinus Torvalds 4171da177e4SLinus Torvalds if ((status = ntohl(*p++))) 4181da177e4SLinus Torvalds return -nfs_stat_to_errno(status); 4191da177e4SLinus Torvalds 4201da177e4SLinus Torvalds hdrlen = (u8 *) p - (u8 *) iov->iov_base; 4211da177e4SLinus Torvalds if (iov->iov_len < hdrlen) { 4221da177e4SLinus Torvalds printk(KERN_WARNING "NFS: READDIR reply header overflowed:" 4231da177e4SLinus Torvalds "length %d > %Zu\n", hdrlen, iov->iov_len); 4241da177e4SLinus Torvalds return -errno_NFSERR_IO; 4251da177e4SLinus Torvalds } else if (iov->iov_len != hdrlen) { 4261da177e4SLinus Torvalds dprintk("NFS: READDIR header is short. iovec will be shifted.\n"); 4271da177e4SLinus Torvalds xdr_shift_buf(rcvbuf, iov->iov_len - hdrlen); 4281da177e4SLinus Torvalds } 4291da177e4SLinus Torvalds 4301da177e4SLinus Torvalds pglen = rcvbuf->page_len; 4311da177e4SLinus Torvalds recvd = rcvbuf->len - hdrlen; 4321da177e4SLinus Torvalds if (pglen > recvd) 4331da177e4SLinus Torvalds pglen = recvd; 4341da177e4SLinus Torvalds page = rcvbuf->pages; 4351da177e4SLinus Torvalds kaddr = p = (u32 *)kmap_atomic(*page, KM_USER0); 4361da177e4SLinus Torvalds end = (u32 *)((char *)p + pglen); 4371da177e4SLinus Torvalds entry = p; 4381da177e4SLinus Torvalds for (nr = 0; *p++; nr++) { 4391da177e4SLinus Torvalds if (p + 2 > end) 4401da177e4SLinus Torvalds goto short_pkt; 4411da177e4SLinus Torvalds p++; /* fileid */ 4421da177e4SLinus Torvalds len = ntohl(*p++); 4431da177e4SLinus Torvalds p += XDR_QUADLEN(len) + 1; /* name plus cookie */ 4441da177e4SLinus Torvalds if (len > NFS2_MAXNAMLEN) { 4451da177e4SLinus Torvalds printk(KERN_WARNING "NFS: giant filename in readdir (len 0x%x)!\n", 4461da177e4SLinus Torvalds len); 4471da177e4SLinus Torvalds goto err_unmap; 4481da177e4SLinus Torvalds } 4491da177e4SLinus Torvalds if (p + 2 > end) 4501da177e4SLinus Torvalds goto short_pkt; 4511da177e4SLinus Torvalds entry = p; 4521da177e4SLinus Torvalds } 4531da177e4SLinus Torvalds if (!nr && (entry[0] != 0 || entry[1] == 0)) 4541da177e4SLinus Torvalds goto short_pkt; 4551da177e4SLinus Torvalds out: 4561da177e4SLinus Torvalds kunmap_atomic(kaddr, KM_USER0); 4571da177e4SLinus Torvalds return nr; 4581da177e4SLinus Torvalds short_pkt: 4591da177e4SLinus Torvalds entry[0] = entry[1] = 0; 4601da177e4SLinus Torvalds /* truncate listing ? */ 4611da177e4SLinus Torvalds if (!nr) { 4621da177e4SLinus Torvalds printk(KERN_NOTICE "NFS: readdir reply truncated!\n"); 4631da177e4SLinus Torvalds entry[1] = 1; 4641da177e4SLinus Torvalds } 4651da177e4SLinus Torvalds goto out; 4661da177e4SLinus Torvalds err_unmap: 4671da177e4SLinus Torvalds nr = -errno_NFSERR_IO; 4681da177e4SLinus Torvalds goto out; 4691da177e4SLinus Torvalds } 4701da177e4SLinus Torvalds 4711da177e4SLinus Torvalds u32 * 4721da177e4SLinus Torvalds nfs_decode_dirent(u32 *p, struct nfs_entry *entry, int plus) 4731da177e4SLinus Torvalds { 4741da177e4SLinus Torvalds if (!*p++) { 4751da177e4SLinus Torvalds if (!*p) 4761da177e4SLinus Torvalds return ERR_PTR(-EAGAIN); 4771da177e4SLinus Torvalds entry->eof = 1; 4781da177e4SLinus Torvalds return ERR_PTR(-EBADCOOKIE); 4791da177e4SLinus Torvalds } 4801da177e4SLinus Torvalds 4811da177e4SLinus Torvalds entry->ino = ntohl(*p++); 4821da177e4SLinus Torvalds entry->len = ntohl(*p++); 4831da177e4SLinus Torvalds entry->name = (const char *) p; 4841da177e4SLinus Torvalds p += XDR_QUADLEN(entry->len); 4851da177e4SLinus Torvalds entry->prev_cookie = entry->cookie; 4861da177e4SLinus Torvalds entry->cookie = ntohl(*p++); 4871da177e4SLinus Torvalds entry->eof = !p[0] && p[1]; 4881da177e4SLinus Torvalds 4891da177e4SLinus Torvalds return p; 4901da177e4SLinus Torvalds } 4911da177e4SLinus Torvalds 4921da177e4SLinus Torvalds /* 4931da177e4SLinus Torvalds * NFS XDR decode functions 4941da177e4SLinus Torvalds */ 4951da177e4SLinus Torvalds /* 4961da177e4SLinus Torvalds * Decode simple status reply 4971da177e4SLinus Torvalds */ 4981da177e4SLinus Torvalds static int 4991da177e4SLinus Torvalds nfs_xdr_stat(struct rpc_rqst *req, u32 *p, void *dummy) 5001da177e4SLinus Torvalds { 5011da177e4SLinus Torvalds int status; 5021da177e4SLinus Torvalds 5031da177e4SLinus Torvalds if ((status = ntohl(*p++)) != 0) 5041da177e4SLinus Torvalds status = -nfs_stat_to_errno(status); 5051da177e4SLinus Torvalds return status; 5061da177e4SLinus Torvalds } 5071da177e4SLinus Torvalds 5081da177e4SLinus Torvalds /* 5091da177e4SLinus Torvalds * Decode attrstat reply 5101da177e4SLinus Torvalds * GETATTR, SETATTR, WRITE 5111da177e4SLinus Torvalds */ 5121da177e4SLinus Torvalds static int 5131da177e4SLinus Torvalds nfs_xdr_attrstat(struct rpc_rqst *req, u32 *p, struct nfs_fattr *fattr) 5141da177e4SLinus Torvalds { 5151da177e4SLinus Torvalds int status; 5161da177e4SLinus Torvalds 5171da177e4SLinus Torvalds if ((status = ntohl(*p++))) 5181da177e4SLinus Torvalds return -nfs_stat_to_errno(status); 5191da177e4SLinus Torvalds xdr_decode_fattr(p, fattr); 5201da177e4SLinus Torvalds return 0; 5211da177e4SLinus Torvalds } 5221da177e4SLinus Torvalds 5231da177e4SLinus Torvalds /* 5241da177e4SLinus Torvalds * Decode diropres reply 5251da177e4SLinus Torvalds * LOOKUP, CREATE, MKDIR 5261da177e4SLinus Torvalds */ 5271da177e4SLinus Torvalds static int 5281da177e4SLinus Torvalds nfs_xdr_diropres(struct rpc_rqst *req, u32 *p, struct nfs_diropok *res) 5291da177e4SLinus Torvalds { 5301da177e4SLinus Torvalds int status; 5311da177e4SLinus Torvalds 5321da177e4SLinus Torvalds if ((status = ntohl(*p++))) 5331da177e4SLinus Torvalds return -nfs_stat_to_errno(status); 5341da177e4SLinus Torvalds p = xdr_decode_fhandle(p, res->fh); 5351da177e4SLinus Torvalds xdr_decode_fattr(p, res->fattr); 5361da177e4SLinus Torvalds return 0; 5371da177e4SLinus Torvalds } 5381da177e4SLinus Torvalds 5391da177e4SLinus Torvalds /* 5401da177e4SLinus Torvalds * Encode READLINK args 5411da177e4SLinus Torvalds */ 5421da177e4SLinus Torvalds static int 5431da177e4SLinus Torvalds nfs_xdr_readlinkargs(struct rpc_rqst *req, u32 *p, struct nfs_readlinkargs *args) 5441da177e4SLinus Torvalds { 5451da177e4SLinus Torvalds struct rpc_auth *auth = req->rq_task->tk_auth; 5461da177e4SLinus Torvalds unsigned int replen; 5471da177e4SLinus Torvalds 5481da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fh); 5491da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 5501da177e4SLinus Torvalds 5511da177e4SLinus Torvalds /* Inline the page array */ 5521da177e4SLinus Torvalds replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS_readlinkres_sz) << 2; 5531da177e4SLinus Torvalds xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, args->pgbase, args->pglen); 5541da177e4SLinus Torvalds return 0; 5551da177e4SLinus Torvalds } 5561da177e4SLinus Torvalds 5571da177e4SLinus Torvalds /* 5581da177e4SLinus Torvalds * Decode READLINK reply 5591da177e4SLinus Torvalds */ 5601da177e4SLinus Torvalds static int 5611da177e4SLinus Torvalds nfs_xdr_readlinkres(struct rpc_rqst *req, u32 *p, void *dummy) 5621da177e4SLinus Torvalds { 5631da177e4SLinus Torvalds struct xdr_buf *rcvbuf = &req->rq_rcv_buf; 5641da177e4SLinus Torvalds struct kvec *iov = rcvbuf->head; 5651da177e4SLinus Torvalds int hdrlen, len, recvd; 5661da177e4SLinus Torvalds char *kaddr; 5671da177e4SLinus Torvalds int status; 5681da177e4SLinus Torvalds 5691da177e4SLinus Torvalds if ((status = ntohl(*p++))) 5701da177e4SLinus Torvalds return -nfs_stat_to_errno(status); 5711da177e4SLinus Torvalds /* Convert length of symlink */ 5721da177e4SLinus Torvalds len = ntohl(*p++); 5731da177e4SLinus Torvalds if (len >= rcvbuf->page_len || len <= 0) { 5741da177e4SLinus Torvalds dprintk(KERN_WARNING "nfs: server returned giant symlink!\n"); 5751da177e4SLinus Torvalds return -ENAMETOOLONG; 5761da177e4SLinus Torvalds } 5771da177e4SLinus Torvalds hdrlen = (u8 *) p - (u8 *) iov->iov_base; 5781da177e4SLinus Torvalds if (iov->iov_len < hdrlen) { 5791da177e4SLinus Torvalds printk(KERN_WARNING "NFS: READLINK reply header overflowed:" 5801da177e4SLinus Torvalds "length %d > %Zu\n", hdrlen, iov->iov_len); 5811da177e4SLinus Torvalds return -errno_NFSERR_IO; 5821da177e4SLinus Torvalds } else if (iov->iov_len != hdrlen) { 5831da177e4SLinus Torvalds dprintk("NFS: READLINK header is short. iovec will be shifted.\n"); 5841da177e4SLinus Torvalds xdr_shift_buf(rcvbuf, iov->iov_len - hdrlen); 5851da177e4SLinus Torvalds } 5861da177e4SLinus Torvalds recvd = req->rq_rcv_buf.len - hdrlen; 5871da177e4SLinus Torvalds if (recvd < len) { 5881da177e4SLinus Torvalds printk(KERN_WARNING "NFS: server cheating in readlink reply: " 5891da177e4SLinus Torvalds "count %u > recvd %u\n", len, recvd); 5901da177e4SLinus Torvalds return -EIO; 5911da177e4SLinus Torvalds } 5921da177e4SLinus Torvalds 5931da177e4SLinus Torvalds /* NULL terminate the string we got */ 5941da177e4SLinus Torvalds kaddr = (char *)kmap_atomic(rcvbuf->pages[0], KM_USER0); 5951da177e4SLinus Torvalds kaddr[len+rcvbuf->page_base] = '\0'; 5961da177e4SLinus Torvalds kunmap_atomic(kaddr, KM_USER0); 5971da177e4SLinus Torvalds return 0; 5981da177e4SLinus Torvalds } 5991da177e4SLinus Torvalds 6001da177e4SLinus Torvalds /* 6011da177e4SLinus Torvalds * Decode WRITE reply 6021da177e4SLinus Torvalds */ 6031da177e4SLinus Torvalds static int 6041da177e4SLinus Torvalds nfs_xdr_writeres(struct rpc_rqst *req, u32 *p, struct nfs_writeres *res) 6051da177e4SLinus Torvalds { 6061da177e4SLinus Torvalds res->verf->committed = NFS_FILE_SYNC; 6071da177e4SLinus Torvalds return nfs_xdr_attrstat(req, p, res->fattr); 6081da177e4SLinus Torvalds } 6091da177e4SLinus Torvalds 6101da177e4SLinus Torvalds /* 6111da177e4SLinus Torvalds * Decode STATFS reply 6121da177e4SLinus Torvalds */ 6131da177e4SLinus Torvalds static int 6141da177e4SLinus Torvalds nfs_xdr_statfsres(struct rpc_rqst *req, u32 *p, struct nfs2_fsstat *res) 6151da177e4SLinus Torvalds { 6161da177e4SLinus Torvalds int status; 6171da177e4SLinus Torvalds 6181da177e4SLinus Torvalds if ((status = ntohl(*p++))) 6191da177e4SLinus Torvalds return -nfs_stat_to_errno(status); 6201da177e4SLinus Torvalds 6211da177e4SLinus Torvalds res->tsize = ntohl(*p++); 6221da177e4SLinus Torvalds res->bsize = ntohl(*p++); 6231da177e4SLinus Torvalds res->blocks = ntohl(*p++); 6241da177e4SLinus Torvalds res->bfree = ntohl(*p++); 6251da177e4SLinus Torvalds res->bavail = ntohl(*p++); 6261da177e4SLinus Torvalds return 0; 6271da177e4SLinus Torvalds } 6281da177e4SLinus Torvalds 6291da177e4SLinus Torvalds /* 6301da177e4SLinus Torvalds * We need to translate between nfs status return values and 6311da177e4SLinus Torvalds * the local errno values which may not be the same. 6321da177e4SLinus Torvalds */ 6331da177e4SLinus Torvalds static struct { 6341da177e4SLinus Torvalds int stat; 6351da177e4SLinus Torvalds int errno; 6361da177e4SLinus Torvalds } nfs_errtbl[] = { 6371da177e4SLinus Torvalds { NFS_OK, 0 }, 6381da177e4SLinus Torvalds { NFSERR_PERM, EPERM }, 6391da177e4SLinus Torvalds { NFSERR_NOENT, ENOENT }, 6401da177e4SLinus Torvalds { NFSERR_IO, errno_NFSERR_IO }, 6411da177e4SLinus Torvalds { NFSERR_NXIO, ENXIO }, 6421da177e4SLinus Torvalds /* { NFSERR_EAGAIN, EAGAIN }, */ 6431da177e4SLinus Torvalds { NFSERR_ACCES, EACCES }, 6441da177e4SLinus Torvalds { NFSERR_EXIST, EEXIST }, 6451da177e4SLinus Torvalds { NFSERR_XDEV, EXDEV }, 6461da177e4SLinus Torvalds { NFSERR_NODEV, ENODEV }, 6471da177e4SLinus Torvalds { NFSERR_NOTDIR, ENOTDIR }, 6481da177e4SLinus Torvalds { NFSERR_ISDIR, EISDIR }, 6491da177e4SLinus Torvalds { NFSERR_INVAL, EINVAL }, 6501da177e4SLinus Torvalds { NFSERR_FBIG, EFBIG }, 6511da177e4SLinus Torvalds { NFSERR_NOSPC, ENOSPC }, 6521da177e4SLinus Torvalds { NFSERR_ROFS, EROFS }, 6531da177e4SLinus Torvalds { NFSERR_MLINK, EMLINK }, 6541da177e4SLinus Torvalds { NFSERR_NAMETOOLONG, ENAMETOOLONG }, 6551da177e4SLinus Torvalds { NFSERR_NOTEMPTY, ENOTEMPTY }, 6561da177e4SLinus Torvalds { NFSERR_DQUOT, EDQUOT }, 6571da177e4SLinus Torvalds { NFSERR_STALE, ESTALE }, 6581da177e4SLinus Torvalds { NFSERR_REMOTE, EREMOTE }, 6591da177e4SLinus Torvalds #ifdef EWFLUSH 6601da177e4SLinus Torvalds { NFSERR_WFLUSH, EWFLUSH }, 6611da177e4SLinus Torvalds #endif 6621da177e4SLinus Torvalds { NFSERR_BADHANDLE, EBADHANDLE }, 6631da177e4SLinus Torvalds { NFSERR_NOT_SYNC, ENOTSYNC }, 6641da177e4SLinus Torvalds { NFSERR_BAD_COOKIE, EBADCOOKIE }, 6651da177e4SLinus Torvalds { NFSERR_NOTSUPP, ENOTSUPP }, 6661da177e4SLinus Torvalds { NFSERR_TOOSMALL, ETOOSMALL }, 6671da177e4SLinus Torvalds { NFSERR_SERVERFAULT, ESERVERFAULT }, 6681da177e4SLinus Torvalds { NFSERR_BADTYPE, EBADTYPE }, 6691da177e4SLinus Torvalds { NFSERR_JUKEBOX, EJUKEBOX }, 6701da177e4SLinus Torvalds { -1, EIO } 6711da177e4SLinus Torvalds }; 6721da177e4SLinus Torvalds 6731da177e4SLinus Torvalds /* 6741da177e4SLinus Torvalds * Convert an NFS error code to a local one. 6751da177e4SLinus Torvalds * This one is used jointly by NFSv2 and NFSv3. 6761da177e4SLinus Torvalds */ 6771da177e4SLinus Torvalds int 6781da177e4SLinus Torvalds nfs_stat_to_errno(int stat) 6791da177e4SLinus Torvalds { 6801da177e4SLinus Torvalds int i; 6811da177e4SLinus Torvalds 6821da177e4SLinus Torvalds for (i = 0; nfs_errtbl[i].stat != -1; i++) { 6831da177e4SLinus Torvalds if (nfs_errtbl[i].stat == stat) 6841da177e4SLinus Torvalds return nfs_errtbl[i].errno; 6851da177e4SLinus Torvalds } 6861da177e4SLinus Torvalds printk(KERN_ERR "nfs_stat_to_errno: bad nfs status return value: %d\n", stat); 6871da177e4SLinus Torvalds return nfs_errtbl[i].errno; 6881da177e4SLinus Torvalds } 6891da177e4SLinus Torvalds 6901da177e4SLinus Torvalds #ifndef MAX 6911da177e4SLinus Torvalds # define MAX(a, b) (((a) > (b))? (a) : (b)) 6921da177e4SLinus Torvalds #endif 6931da177e4SLinus Torvalds 6941da177e4SLinus Torvalds #define PROC(proc, argtype, restype, timer) \ 6951da177e4SLinus Torvalds [NFSPROC_##proc] = { \ 6961da177e4SLinus Torvalds .p_proc = NFSPROC_##proc, \ 6971da177e4SLinus Torvalds .p_encode = (kxdrproc_t) nfs_xdr_##argtype, \ 6981da177e4SLinus Torvalds .p_decode = (kxdrproc_t) nfs_xdr_##restype, \ 6991da177e4SLinus Torvalds .p_bufsiz = MAX(NFS_##argtype##_sz,NFS_##restype##_sz) << 2, \ 700cc0175c1SChuck Lever .p_timer = timer, \ 701cc0175c1SChuck Lever .p_statidx = NFSPROC_##proc, \ 702cc0175c1SChuck Lever .p_name = #proc, \ 7031da177e4SLinus Torvalds } 7041da177e4SLinus Torvalds struct rpc_procinfo nfs_procedures[] = { 7051da177e4SLinus Torvalds PROC(GETATTR, fhandle, attrstat, 1), 7061da177e4SLinus Torvalds PROC(SETATTR, sattrargs, attrstat, 0), 7071da177e4SLinus Torvalds PROC(LOOKUP, diropargs, diropres, 2), 7081da177e4SLinus Torvalds PROC(READLINK, readlinkargs, readlinkres, 3), 7091da177e4SLinus Torvalds PROC(READ, readargs, readres, 3), 7101da177e4SLinus Torvalds PROC(WRITE, writeargs, writeres, 4), 7111da177e4SLinus Torvalds PROC(CREATE, createargs, diropres, 0), 7121da177e4SLinus Torvalds PROC(REMOVE, diropargs, stat, 0), 7131da177e4SLinus Torvalds PROC(RENAME, renameargs, stat, 0), 7141da177e4SLinus Torvalds PROC(LINK, linkargs, stat, 0), 7151da177e4SLinus Torvalds PROC(SYMLINK, symlinkargs, stat, 0), 7161da177e4SLinus Torvalds PROC(MKDIR, createargs, diropres, 0), 7171da177e4SLinus Torvalds PROC(RMDIR, diropargs, stat, 0), 7181da177e4SLinus Torvalds PROC(READDIR, readdirargs, readdirres, 3), 7191da177e4SLinus Torvalds PROC(STATFS, fhandle, statfsres, 0), 7201da177e4SLinus Torvalds }; 7211da177e4SLinus Torvalds 7221da177e4SLinus Torvalds struct rpc_version nfs_version2 = { 7231da177e4SLinus Torvalds .number = 2, 724e8c96f8cSTobias Klauser .nrprocs = ARRAY_SIZE(nfs_procedures), 7251da177e4SLinus Torvalds .procs = nfs_procedures 7261da177e4SLinus Torvalds }; 727