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/slab.h> 131da177e4SLinus Torvalds #include <linux/utsname.h> 141da177e4SLinus Torvalds #include <linux/errno.h> 151da177e4SLinus Torvalds #include <linux/string.h> 161da177e4SLinus Torvalds #include <linux/in.h> 171da177e4SLinus Torvalds #include <linux/pagemap.h> 181da177e4SLinus Torvalds #include <linux/proc_fs.h> 191da177e4SLinus Torvalds #include <linux/kdev_t.h> 201da177e4SLinus Torvalds #include <linux/sunrpc/clnt.h> 211da177e4SLinus Torvalds #include <linux/nfs.h> 221da177e4SLinus Torvalds #include <linux/nfs3.h> 231da177e4SLinus Torvalds #include <linux/nfs_fs.h> 24b7fa0554SAndreas Gruenbacher #include <linux/nfsacl.h> 25f7b422b1SDavid Howells #include "internal.h" 261da177e4SLinus Torvalds 271da177e4SLinus Torvalds #define NFSDBG_FACILITY NFSDBG_XDR 281da177e4SLinus Torvalds 291da177e4SLinus Torvalds /* Mapping from NFS error code to "errno" error code. */ 301da177e4SLinus Torvalds #define errno_NFSERR_IO EIO 311da177e4SLinus Torvalds 321da177e4SLinus Torvalds /* 331da177e4SLinus Torvalds * Declare the space requirements for NFS arguments and replies as 341da177e4SLinus Torvalds * number of 32bit-words 351da177e4SLinus Torvalds */ 361da177e4SLinus Torvalds #define NFS3_fhandle_sz (1+16) 371da177e4SLinus Torvalds #define NFS3_fh_sz (NFS3_fhandle_sz) /* shorthand */ 381da177e4SLinus Torvalds #define NFS3_sattr_sz (15) 391da177e4SLinus Torvalds #define NFS3_filename_sz (1+(NFS3_MAXNAMLEN>>2)) 401da177e4SLinus Torvalds #define NFS3_path_sz (1+(NFS3_MAXPATHLEN>>2)) 411da177e4SLinus Torvalds #define NFS3_fattr_sz (21) 421da177e4SLinus Torvalds #define NFS3_wcc_attr_sz (6) 431da177e4SLinus Torvalds #define NFS3_pre_op_attr_sz (1+NFS3_wcc_attr_sz) 441da177e4SLinus Torvalds #define NFS3_post_op_attr_sz (1+NFS3_fattr_sz) 451da177e4SLinus Torvalds #define NFS3_wcc_data_sz (NFS3_pre_op_attr_sz+NFS3_post_op_attr_sz) 461da177e4SLinus Torvalds #define NFS3_fsstat_sz 471da177e4SLinus Torvalds #define NFS3_fsinfo_sz 481da177e4SLinus Torvalds #define NFS3_pathconf_sz 491da177e4SLinus Torvalds #define NFS3_entry_sz (NFS3_filename_sz+3) 501da177e4SLinus Torvalds 511da177e4SLinus Torvalds #define NFS3_sattrargs_sz (NFS3_fh_sz+NFS3_sattr_sz+3) 521da177e4SLinus Torvalds #define NFS3_diropargs_sz (NFS3_fh_sz+NFS3_filename_sz) 534fdc17b2STrond Myklebust #define NFS3_removeargs_sz (NFS3_fh_sz+NFS3_filename_sz) 541da177e4SLinus Torvalds #define NFS3_accessargs_sz (NFS3_fh_sz+1) 551da177e4SLinus Torvalds #define NFS3_readlinkargs_sz (NFS3_fh_sz) 561da177e4SLinus Torvalds #define NFS3_readargs_sz (NFS3_fh_sz+3) 571da177e4SLinus Torvalds #define NFS3_writeargs_sz (NFS3_fh_sz+5) 581da177e4SLinus Torvalds #define NFS3_createargs_sz (NFS3_diropargs_sz+NFS3_sattr_sz) 591da177e4SLinus Torvalds #define NFS3_mkdirargs_sz (NFS3_diropargs_sz+NFS3_sattr_sz) 6094a6d753SChuck Lever #define NFS3_symlinkargs_sz (NFS3_diropargs_sz+1+NFS3_sattr_sz) 611da177e4SLinus Torvalds #define NFS3_mknodargs_sz (NFS3_diropargs_sz+2+NFS3_sattr_sz) 621da177e4SLinus Torvalds #define NFS3_renameargs_sz (NFS3_diropargs_sz+NFS3_diropargs_sz) 631da177e4SLinus Torvalds #define NFS3_linkargs_sz (NFS3_fh_sz+NFS3_diropargs_sz) 641da177e4SLinus Torvalds #define NFS3_readdirargs_sz (NFS3_fh_sz+2) 651da177e4SLinus Torvalds #define NFS3_commitargs_sz (NFS3_fh_sz+3) 661da177e4SLinus Torvalds 671da177e4SLinus Torvalds #define NFS3_attrstat_sz (1+NFS3_fattr_sz) 681da177e4SLinus Torvalds #define NFS3_wccstat_sz (1+NFS3_wcc_data_sz) 694fdc17b2STrond Myklebust #define NFS3_removeres_sz (NFS3_wccstat_sz) 701da177e4SLinus Torvalds #define NFS3_lookupres_sz (1+NFS3_fh_sz+(2 * NFS3_post_op_attr_sz)) 711da177e4SLinus Torvalds #define NFS3_accessres_sz (1+NFS3_post_op_attr_sz+1) 721da177e4SLinus Torvalds #define NFS3_readlinkres_sz (1+NFS3_post_op_attr_sz+1) 731da177e4SLinus Torvalds #define NFS3_readres_sz (1+NFS3_post_op_attr_sz+3) 741da177e4SLinus Torvalds #define NFS3_writeres_sz (1+NFS3_wcc_data_sz+4) 751da177e4SLinus Torvalds #define NFS3_createres_sz (1+NFS3_fh_sz+NFS3_post_op_attr_sz+NFS3_wcc_data_sz) 761da177e4SLinus Torvalds #define NFS3_renameres_sz (1+(2 * NFS3_wcc_data_sz)) 771da177e4SLinus Torvalds #define NFS3_linkres_sz (1+NFS3_post_op_attr_sz+NFS3_wcc_data_sz) 781da177e4SLinus Torvalds #define NFS3_readdirres_sz (1+NFS3_post_op_attr_sz+2) 791da177e4SLinus Torvalds #define NFS3_fsstatres_sz (1+NFS3_post_op_attr_sz+13) 801da177e4SLinus Torvalds #define NFS3_fsinfores_sz (1+NFS3_post_op_attr_sz+12) 811da177e4SLinus Torvalds #define NFS3_pathconfres_sz (1+NFS3_post_op_attr_sz+6) 821da177e4SLinus Torvalds #define NFS3_commitres_sz (1+NFS3_wcc_data_sz+2) 831da177e4SLinus Torvalds 84b7fa0554SAndreas Gruenbacher #define ACL3_getaclargs_sz (NFS3_fh_sz+1) 85ae46141fSTrond Myklebust #define ACL3_setaclargs_sz (NFS3_fh_sz+1+ \ 86ae46141fSTrond Myklebust XDR_QUADLEN(NFS_ACL_INLINE_BUFSIZE)) 87ae46141fSTrond Myklebust #define ACL3_getaclres_sz (1+NFS3_post_op_attr_sz+1+ \ 88ae46141fSTrond Myklebust XDR_QUADLEN(NFS_ACL_INLINE_BUFSIZE)) 89b7fa0554SAndreas Gruenbacher #define ACL3_setaclres_sz (1+NFS3_post_op_attr_sz) 90b7fa0554SAndreas Gruenbacher 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 /* 1061da177e4SLinus Torvalds * Common NFS XDR functions as inlines 1071da177e4SLinus Torvalds */ 108d61005a6SAl Viro static inline __be32 * 1094fdc17b2STrond Myklebust xdr_encode_fhandle(__be32 *p, const struct nfs_fh *fh) 1101da177e4SLinus Torvalds { 1111da177e4SLinus Torvalds return xdr_encode_array(p, fh->data, fh->size); 1121da177e4SLinus Torvalds } 1131da177e4SLinus Torvalds 114d61005a6SAl Viro static inline __be32 * 115d61005a6SAl Viro xdr_decode_fhandle(__be32 *p, struct nfs_fh *fh) 1161da177e4SLinus Torvalds { 1171da177e4SLinus Torvalds if ((fh->size = ntohl(*p++)) <= NFS3_FHSIZE) { 1181da177e4SLinus Torvalds memcpy(fh->data, p, fh->size); 1191da177e4SLinus Torvalds return p + XDR_QUADLEN(fh->size); 1201da177e4SLinus Torvalds } 1211da177e4SLinus Torvalds return NULL; 1221da177e4SLinus Torvalds } 1231da177e4SLinus Torvalds 1241da177e4SLinus Torvalds /* 1251da177e4SLinus Torvalds * Encode/decode time. 1261da177e4SLinus Torvalds */ 127d61005a6SAl Viro static inline __be32 * 128d61005a6SAl Viro xdr_encode_time3(__be32 *p, struct timespec *timep) 1291da177e4SLinus Torvalds { 1301da177e4SLinus Torvalds *p++ = htonl(timep->tv_sec); 1311da177e4SLinus Torvalds *p++ = htonl(timep->tv_nsec); 1321da177e4SLinus Torvalds return p; 1331da177e4SLinus Torvalds } 1341da177e4SLinus Torvalds 135d61005a6SAl Viro static inline __be32 * 136d61005a6SAl Viro xdr_decode_time3(__be32 *p, struct timespec *timep) 1371da177e4SLinus Torvalds { 1381da177e4SLinus Torvalds timep->tv_sec = ntohl(*p++); 1391da177e4SLinus Torvalds timep->tv_nsec = ntohl(*p++); 1401da177e4SLinus Torvalds return p; 1411da177e4SLinus Torvalds } 1421da177e4SLinus Torvalds 143d61005a6SAl Viro static __be32 * 144d61005a6SAl Viro xdr_decode_fattr(__be32 *p, struct nfs_fattr *fattr) 1451da177e4SLinus Torvalds { 1461da177e4SLinus Torvalds unsigned int type, major, minor; 147bca79478STrond Myklebust umode_t fmode; 1481da177e4SLinus Torvalds 1491da177e4SLinus Torvalds type = ntohl(*p++); 150bca79478STrond Myklebust if (type > NF3FIFO) 151bca79478STrond Myklebust type = NF3NON; 152bca79478STrond Myklebust fmode = nfs_type2fmt[type]; 1531da177e4SLinus Torvalds fattr->mode = (ntohl(*p++) & ~S_IFMT) | fmode; 1541da177e4SLinus Torvalds fattr->nlink = ntohl(*p++); 1551da177e4SLinus Torvalds fattr->uid = ntohl(*p++); 1561da177e4SLinus Torvalds fattr->gid = ntohl(*p++); 1571da177e4SLinus Torvalds p = xdr_decode_hyper(p, &fattr->size); 1581da177e4SLinus Torvalds p = xdr_decode_hyper(p, &fattr->du.nfs3.used); 1591da177e4SLinus Torvalds 1601da177e4SLinus Torvalds /* Turn remote device info into Linux-specific dev_t */ 1611da177e4SLinus Torvalds major = ntohl(*p++); 1621da177e4SLinus Torvalds minor = ntohl(*p++); 1631da177e4SLinus Torvalds fattr->rdev = MKDEV(major, minor); 1641da177e4SLinus Torvalds if (MAJOR(fattr->rdev) != major || MINOR(fattr->rdev) != minor) 1651da177e4SLinus Torvalds fattr->rdev = 0; 1661da177e4SLinus Torvalds 1678b4bdcf8STrond Myklebust p = xdr_decode_hyper(p, &fattr->fsid.major); 1688b4bdcf8STrond Myklebust fattr->fsid.minor = 0; 1691da177e4SLinus Torvalds p = xdr_decode_hyper(p, &fattr->fileid); 1701da177e4SLinus Torvalds p = xdr_decode_time3(p, &fattr->atime); 1711da177e4SLinus Torvalds p = xdr_decode_time3(p, &fattr->mtime); 1721da177e4SLinus Torvalds p = xdr_decode_time3(p, &fattr->ctime); 1731da177e4SLinus Torvalds 1741da177e4SLinus Torvalds /* Update the mode bits */ 1759e6e70f8STrond Myklebust fattr->valid |= NFS_ATTR_FATTR_V3; 1761da177e4SLinus Torvalds return p; 1771da177e4SLinus Torvalds } 1781da177e4SLinus Torvalds 179d61005a6SAl Viro static inline __be32 * 180d61005a6SAl Viro xdr_encode_sattr(__be32 *p, struct iattr *attr) 1811da177e4SLinus Torvalds { 1821da177e4SLinus Torvalds if (attr->ia_valid & ATTR_MODE) { 1831da177e4SLinus Torvalds *p++ = xdr_one; 184cf3fff54STrond Myklebust *p++ = htonl(attr->ia_mode & S_IALLUGO); 1851da177e4SLinus Torvalds } else { 1861da177e4SLinus Torvalds *p++ = xdr_zero; 1871da177e4SLinus Torvalds } 1881da177e4SLinus Torvalds if (attr->ia_valid & ATTR_UID) { 1891da177e4SLinus Torvalds *p++ = xdr_one; 1901da177e4SLinus Torvalds *p++ = htonl(attr->ia_uid); 1911da177e4SLinus Torvalds } else { 1921da177e4SLinus Torvalds *p++ = xdr_zero; 1931da177e4SLinus Torvalds } 1941da177e4SLinus Torvalds if (attr->ia_valid & ATTR_GID) { 1951da177e4SLinus Torvalds *p++ = xdr_one; 1961da177e4SLinus Torvalds *p++ = htonl(attr->ia_gid); 1971da177e4SLinus Torvalds } else { 1981da177e4SLinus Torvalds *p++ = xdr_zero; 1991da177e4SLinus Torvalds } 2001da177e4SLinus Torvalds if (attr->ia_valid & ATTR_SIZE) { 2011da177e4SLinus Torvalds *p++ = xdr_one; 2021da177e4SLinus Torvalds p = xdr_encode_hyper(p, (__u64) attr->ia_size); 2031da177e4SLinus Torvalds } else { 2041da177e4SLinus Torvalds *p++ = xdr_zero; 2051da177e4SLinus Torvalds } 2061da177e4SLinus Torvalds if (attr->ia_valid & ATTR_ATIME_SET) { 2071da177e4SLinus Torvalds *p++ = xdr_two; 2081da177e4SLinus Torvalds p = xdr_encode_time3(p, &attr->ia_atime); 2091da177e4SLinus Torvalds } else if (attr->ia_valid & ATTR_ATIME) { 2101da177e4SLinus Torvalds *p++ = xdr_one; 2111da177e4SLinus Torvalds } else { 2121da177e4SLinus Torvalds *p++ = xdr_zero; 2131da177e4SLinus Torvalds } 2141da177e4SLinus Torvalds if (attr->ia_valid & ATTR_MTIME_SET) { 2151da177e4SLinus Torvalds *p++ = xdr_two; 2161da177e4SLinus Torvalds p = xdr_encode_time3(p, &attr->ia_mtime); 2171da177e4SLinus Torvalds } else if (attr->ia_valid & ATTR_MTIME) { 2181da177e4SLinus Torvalds *p++ = xdr_one; 2191da177e4SLinus Torvalds } else { 2201da177e4SLinus Torvalds *p++ = xdr_zero; 2211da177e4SLinus Torvalds } 2221da177e4SLinus Torvalds return p; 2231da177e4SLinus Torvalds } 2241da177e4SLinus Torvalds 225d61005a6SAl Viro static inline __be32 * 226d61005a6SAl Viro xdr_decode_wcc_attr(__be32 *p, struct nfs_fattr *fattr) 2271da177e4SLinus Torvalds { 2281da177e4SLinus Torvalds p = xdr_decode_hyper(p, &fattr->pre_size); 2291da177e4SLinus Torvalds p = xdr_decode_time3(p, &fattr->pre_mtime); 2301da177e4SLinus Torvalds p = xdr_decode_time3(p, &fattr->pre_ctime); 2319e6e70f8STrond Myklebust fattr->valid |= NFS_ATTR_FATTR_PRESIZE 2329e6e70f8STrond Myklebust | NFS_ATTR_FATTR_PREMTIME 2339e6e70f8STrond Myklebust | NFS_ATTR_FATTR_PRECTIME; 2341da177e4SLinus Torvalds return p; 2351da177e4SLinus Torvalds } 2361da177e4SLinus Torvalds 237d61005a6SAl Viro static inline __be32 * 238d61005a6SAl Viro xdr_decode_post_op_attr(__be32 *p, struct nfs_fattr *fattr) 2391da177e4SLinus Torvalds { 2401da177e4SLinus Torvalds if (*p++) 2411da177e4SLinus Torvalds p = xdr_decode_fattr(p, fattr); 2421da177e4SLinus Torvalds return p; 2431da177e4SLinus Torvalds } 2441da177e4SLinus Torvalds 245d61005a6SAl Viro static inline __be32 * 246d61005a6SAl Viro xdr_decode_pre_op_attr(__be32 *p, struct nfs_fattr *fattr) 2471da177e4SLinus Torvalds { 2481da177e4SLinus Torvalds if (*p++) 2491da177e4SLinus Torvalds return xdr_decode_wcc_attr(p, fattr); 2501da177e4SLinus Torvalds return p; 2511da177e4SLinus Torvalds } 2521da177e4SLinus Torvalds 2531da177e4SLinus Torvalds 254d61005a6SAl Viro static inline __be32 * 255d61005a6SAl Viro xdr_decode_wcc_data(__be32 *p, struct nfs_fattr *fattr) 2561da177e4SLinus Torvalds { 2571da177e4SLinus Torvalds p = xdr_decode_pre_op_attr(p, fattr); 2581da177e4SLinus Torvalds return xdr_decode_post_op_attr(p, fattr); 2591da177e4SLinus Torvalds } 2601da177e4SLinus Torvalds 2611da177e4SLinus Torvalds /* 2621da177e4SLinus Torvalds * NFS encode functions 2631da177e4SLinus Torvalds */ 2641da177e4SLinus Torvalds 2651da177e4SLinus Torvalds /* 2661da177e4SLinus Torvalds * Encode file handle argument 2671da177e4SLinus Torvalds */ 2681da177e4SLinus Torvalds static int 269d61005a6SAl Viro nfs3_xdr_fhandle(struct rpc_rqst *req, __be32 *p, struct nfs_fh *fh) 2701da177e4SLinus Torvalds { 2711da177e4SLinus Torvalds p = xdr_encode_fhandle(p, fh); 2721da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 2731da177e4SLinus Torvalds return 0; 2741da177e4SLinus Torvalds } 2751da177e4SLinus Torvalds 2761da177e4SLinus Torvalds /* 2771da177e4SLinus Torvalds * Encode SETATTR arguments 2781da177e4SLinus Torvalds */ 2791da177e4SLinus Torvalds static int 280d61005a6SAl Viro nfs3_xdr_sattrargs(struct rpc_rqst *req, __be32 *p, struct nfs3_sattrargs *args) 2811da177e4SLinus Torvalds { 2821da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fh); 2831da177e4SLinus Torvalds p = xdr_encode_sattr(p, args->sattr); 2841da177e4SLinus Torvalds *p++ = htonl(args->guard); 2851da177e4SLinus Torvalds if (args->guard) 2861da177e4SLinus Torvalds p = xdr_encode_time3(p, &args->guardtime); 2871da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 2881da177e4SLinus Torvalds return 0; 2891da177e4SLinus Torvalds } 2901da177e4SLinus Torvalds 2911da177e4SLinus Torvalds /* 2921da177e4SLinus Torvalds * Encode directory ops argument 2931da177e4SLinus Torvalds */ 2941da177e4SLinus Torvalds static int 295d61005a6SAl Viro nfs3_xdr_diropargs(struct rpc_rqst *req, __be32 *p, struct nfs3_diropargs *args) 2961da177e4SLinus Torvalds { 2971da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fh); 2981da177e4SLinus Torvalds p = xdr_encode_array(p, args->name, args->len); 2991da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 3001da177e4SLinus Torvalds return 0; 3011da177e4SLinus Torvalds } 3021da177e4SLinus Torvalds 3031da177e4SLinus Torvalds /* 3044fdc17b2STrond Myklebust * Encode REMOVE argument 3054fdc17b2STrond Myklebust */ 3064fdc17b2STrond Myklebust static int 3074fdc17b2STrond Myklebust nfs3_xdr_removeargs(struct rpc_rqst *req, __be32 *p, const struct nfs_removeargs *args) 3084fdc17b2STrond Myklebust { 3094fdc17b2STrond Myklebust p = xdr_encode_fhandle(p, args->fh); 3104fdc17b2STrond Myklebust p = xdr_encode_array(p, args->name.name, args->name.len); 3114fdc17b2STrond Myklebust req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 3124fdc17b2STrond Myklebust return 0; 3134fdc17b2STrond Myklebust } 3144fdc17b2STrond Myklebust 3154fdc17b2STrond Myklebust /* 3161da177e4SLinus Torvalds * Encode access() argument 3171da177e4SLinus Torvalds */ 3181da177e4SLinus Torvalds static int 319d61005a6SAl Viro nfs3_xdr_accessargs(struct rpc_rqst *req, __be32 *p, struct nfs3_accessargs *args) 3201da177e4SLinus Torvalds { 3211da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fh); 3221da177e4SLinus Torvalds *p++ = htonl(args->access); 3231da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 3241da177e4SLinus Torvalds return 0; 3251da177e4SLinus Torvalds } 3261da177e4SLinus Torvalds 3271da177e4SLinus Torvalds /* 3281da177e4SLinus Torvalds * Arguments to a READ call. Since we read data directly into the page 3291da177e4SLinus Torvalds * cache, we also set up the reply iovec here so that iov[1] points 3301da177e4SLinus Torvalds * exactly to the page we want to fetch. 3311da177e4SLinus Torvalds */ 3321da177e4SLinus Torvalds static int 333d61005a6SAl Viro nfs3_xdr_readargs(struct rpc_rqst *req, __be32 *p, struct nfs_readargs *args) 3341da177e4SLinus Torvalds { 3351be27f36STrond Myklebust struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth; 3361da177e4SLinus Torvalds unsigned int replen; 3371da177e4SLinus Torvalds u32 count = args->count; 3381da177e4SLinus Torvalds 3391da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fh); 3401da177e4SLinus Torvalds p = xdr_encode_hyper(p, args->offset); 3411da177e4SLinus Torvalds *p++ = htonl(count); 3421da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 3431da177e4SLinus Torvalds 3441da177e4SLinus Torvalds /* Inline the page array */ 3451da177e4SLinus Torvalds replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readres_sz) << 2; 3461da177e4SLinus Torvalds xdr_inline_pages(&req->rq_rcv_buf, replen, 3471da177e4SLinus Torvalds args->pages, args->pgbase, count); 3484f22ccc3S\"Talpey, Thomas\ req->rq_rcv_buf.flags |= XDRBUF_READ; 3491da177e4SLinus Torvalds return 0; 3501da177e4SLinus Torvalds } 3511da177e4SLinus Torvalds 3521da177e4SLinus Torvalds /* 3531da177e4SLinus Torvalds * Write arguments. Splice the buffer to be written into the iovec. 3541da177e4SLinus Torvalds */ 3551da177e4SLinus Torvalds static int 356d61005a6SAl Viro nfs3_xdr_writeargs(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args) 3571da177e4SLinus Torvalds { 3581da177e4SLinus Torvalds struct xdr_buf *sndbuf = &req->rq_snd_buf; 3591da177e4SLinus Torvalds u32 count = args->count; 3601da177e4SLinus Torvalds 3611da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fh); 3621da177e4SLinus Torvalds p = xdr_encode_hyper(p, args->offset); 3631da177e4SLinus Torvalds *p++ = htonl(count); 3641da177e4SLinus Torvalds *p++ = htonl(args->stable); 3651da177e4SLinus Torvalds *p++ = htonl(count); 3661da177e4SLinus Torvalds sndbuf->len = xdr_adjust_iovec(sndbuf->head, p); 3671da177e4SLinus Torvalds 3681da177e4SLinus Torvalds /* Copy the page array */ 3691da177e4SLinus Torvalds xdr_encode_pages(sndbuf, args->pages, args->pgbase, count); 3704f22ccc3S\"Talpey, Thomas\ sndbuf->flags |= XDRBUF_WRITE; 3711da177e4SLinus Torvalds return 0; 3721da177e4SLinus Torvalds } 3731da177e4SLinus Torvalds 3741da177e4SLinus Torvalds /* 3751da177e4SLinus Torvalds * Encode CREATE arguments 3761da177e4SLinus Torvalds */ 3771da177e4SLinus Torvalds static int 378d61005a6SAl Viro nfs3_xdr_createargs(struct rpc_rqst *req, __be32 *p, struct nfs3_createargs *args) 3791da177e4SLinus Torvalds { 3801da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fh); 3811da177e4SLinus Torvalds p = xdr_encode_array(p, args->name, args->len); 3821da177e4SLinus Torvalds 3831da177e4SLinus Torvalds *p++ = htonl(args->createmode); 3841da177e4SLinus Torvalds if (args->createmode == NFS3_CREATE_EXCLUSIVE) { 3851da177e4SLinus Torvalds *p++ = args->verifier[0]; 3861da177e4SLinus Torvalds *p++ = args->verifier[1]; 3871da177e4SLinus Torvalds } else 3881da177e4SLinus Torvalds p = xdr_encode_sattr(p, args->sattr); 3891da177e4SLinus Torvalds 3901da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 3911da177e4SLinus Torvalds return 0; 3921da177e4SLinus Torvalds } 3931da177e4SLinus Torvalds 3941da177e4SLinus Torvalds /* 3951da177e4SLinus Torvalds * Encode MKDIR arguments 3961da177e4SLinus Torvalds */ 3971da177e4SLinus Torvalds static int 398d61005a6SAl Viro nfs3_xdr_mkdirargs(struct rpc_rqst *req, __be32 *p, struct nfs3_mkdirargs *args) 3991da177e4SLinus Torvalds { 4001da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fh); 4011da177e4SLinus Torvalds p = xdr_encode_array(p, args->name, args->len); 4021da177e4SLinus Torvalds p = xdr_encode_sattr(p, args->sattr); 4031da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 4041da177e4SLinus Torvalds return 0; 4051da177e4SLinus Torvalds } 4061da177e4SLinus Torvalds 4071da177e4SLinus Torvalds /* 4081da177e4SLinus Torvalds * Encode SYMLINK arguments 4091da177e4SLinus Torvalds */ 4101da177e4SLinus Torvalds static int 411d61005a6SAl Viro nfs3_xdr_symlinkargs(struct rpc_rqst *req, __be32 *p, struct nfs3_symlinkargs *args) 4121da177e4SLinus Torvalds { 4131da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fromfh); 4141da177e4SLinus Torvalds p = xdr_encode_array(p, args->fromname, args->fromlen); 4151da177e4SLinus Torvalds p = xdr_encode_sattr(p, args->sattr); 41694a6d753SChuck Lever *p++ = htonl(args->pathlen); 4171da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 41894a6d753SChuck Lever 41994a6d753SChuck Lever /* Copy the page */ 42094a6d753SChuck Lever xdr_encode_pages(&req->rq_snd_buf, args->pages, 0, args->pathlen); 4211da177e4SLinus Torvalds return 0; 4221da177e4SLinus Torvalds } 4231da177e4SLinus Torvalds 4241da177e4SLinus Torvalds /* 4251da177e4SLinus Torvalds * Encode MKNOD arguments 4261da177e4SLinus Torvalds */ 4271da177e4SLinus Torvalds static int 428d61005a6SAl Viro nfs3_xdr_mknodargs(struct rpc_rqst *req, __be32 *p, struct nfs3_mknodargs *args) 4291da177e4SLinus Torvalds { 4301da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fh); 4311da177e4SLinus Torvalds p = xdr_encode_array(p, args->name, args->len); 4321da177e4SLinus Torvalds *p++ = htonl(args->type); 4331da177e4SLinus Torvalds p = xdr_encode_sattr(p, args->sattr); 4341da177e4SLinus Torvalds if (args->type == NF3CHR || args->type == NF3BLK) { 4351da177e4SLinus Torvalds *p++ = htonl(MAJOR(args->rdev)); 4361da177e4SLinus Torvalds *p++ = htonl(MINOR(args->rdev)); 4371da177e4SLinus Torvalds } 4381da177e4SLinus Torvalds 4391da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 4401da177e4SLinus Torvalds return 0; 4411da177e4SLinus Torvalds } 4421da177e4SLinus Torvalds 4431da177e4SLinus Torvalds /* 4441da177e4SLinus Torvalds * Encode RENAME arguments 4451da177e4SLinus Torvalds */ 4461da177e4SLinus Torvalds static int 447d61005a6SAl Viro nfs3_xdr_renameargs(struct rpc_rqst *req, __be32 *p, struct nfs3_renameargs *args) 4481da177e4SLinus Torvalds { 4491da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fromfh); 4501da177e4SLinus Torvalds p = xdr_encode_array(p, args->fromname, args->fromlen); 4511da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->tofh); 4521da177e4SLinus Torvalds p = xdr_encode_array(p, args->toname, args->tolen); 4531da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 4541da177e4SLinus Torvalds return 0; 4551da177e4SLinus Torvalds } 4561da177e4SLinus Torvalds 4571da177e4SLinus Torvalds /* 4581da177e4SLinus Torvalds * Encode LINK arguments 4591da177e4SLinus Torvalds */ 4601da177e4SLinus Torvalds static int 461d61005a6SAl Viro nfs3_xdr_linkargs(struct rpc_rqst *req, __be32 *p, struct nfs3_linkargs *args) 4621da177e4SLinus Torvalds { 4631da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fromfh); 4641da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->tofh); 4651da177e4SLinus Torvalds p = xdr_encode_array(p, args->toname, args->tolen); 4661da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 4671da177e4SLinus Torvalds return 0; 4681da177e4SLinus Torvalds } 4691da177e4SLinus Torvalds 4701da177e4SLinus Torvalds /* 4711da177e4SLinus Torvalds * Encode arguments to readdir call 4721da177e4SLinus Torvalds */ 4731da177e4SLinus Torvalds static int 474d61005a6SAl Viro nfs3_xdr_readdirargs(struct rpc_rqst *req, __be32 *p, struct nfs3_readdirargs *args) 4751da177e4SLinus Torvalds { 4761be27f36STrond Myklebust struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth; 4771da177e4SLinus Torvalds unsigned int replen; 4781da177e4SLinus Torvalds u32 count = args->count; 4791da177e4SLinus Torvalds 4801da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fh); 4811da177e4SLinus Torvalds p = xdr_encode_hyper(p, args->cookie); 4821da177e4SLinus Torvalds *p++ = args->verf[0]; 4831da177e4SLinus Torvalds *p++ = args->verf[1]; 4841da177e4SLinus Torvalds if (args->plus) { 4851da177e4SLinus Torvalds /* readdirplus: need dircount + buffer size. 4861da177e4SLinus Torvalds * We just make sure we make dircount big enough */ 4871da177e4SLinus Torvalds *p++ = htonl(count >> 3); 4881da177e4SLinus Torvalds } 4891da177e4SLinus Torvalds *p++ = htonl(count); 4901da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 4911da177e4SLinus Torvalds 4921da177e4SLinus Torvalds /* Inline the page array */ 4931da177e4SLinus Torvalds replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readdirres_sz) << 2; 4941da177e4SLinus Torvalds xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, 0, count); 4951da177e4SLinus Torvalds return 0; 4961da177e4SLinus Torvalds } 4971da177e4SLinus Torvalds 4981da177e4SLinus Torvalds /* 4991da177e4SLinus Torvalds * Decode the result of a readdir call. 5001da177e4SLinus Torvalds * We just check for syntactical correctness. 5011da177e4SLinus Torvalds */ 5021da177e4SLinus Torvalds static int 503d61005a6SAl Viro nfs3_xdr_readdirres(struct rpc_rqst *req, __be32 *p, struct nfs3_readdirres *res) 5041da177e4SLinus Torvalds { 5051da177e4SLinus Torvalds struct xdr_buf *rcvbuf = &req->rq_rcv_buf; 5061da177e4SLinus Torvalds struct kvec *iov = rcvbuf->head; 5071da177e4SLinus Torvalds struct page **page; 508c957c526SChuck Lever size_t hdrlen; 509c957c526SChuck Lever u32 len, recvd, pglen; 510643f8111SJeff Layton int status, nr = 0; 511d61005a6SAl Viro __be32 *entry, *end, *kaddr; 5121da177e4SLinus Torvalds 5131da177e4SLinus Torvalds status = ntohl(*p++); 5141da177e4SLinus Torvalds /* Decode post_op_attrs */ 5151da177e4SLinus Torvalds p = xdr_decode_post_op_attr(p, res->dir_attr); 5161da177e4SLinus Torvalds if (status) 517856dff3dSBenny Halevy return nfs_stat_to_errno(status); 5181da177e4SLinus Torvalds /* Decode verifier cookie */ 5191da177e4SLinus Torvalds if (res->verf) { 5201da177e4SLinus Torvalds res->verf[0] = *p++; 5211da177e4SLinus Torvalds res->verf[1] = *p++; 5221da177e4SLinus Torvalds } else { 5231da177e4SLinus Torvalds p += 2; 5241da177e4SLinus Torvalds } 5251da177e4SLinus Torvalds 5261da177e4SLinus Torvalds hdrlen = (u8 *) p - (u8 *) iov->iov_base; 5271da177e4SLinus Torvalds if (iov->iov_len < hdrlen) { 528fe82a183SChuck Lever dprintk("NFS: READDIR reply header overflowed:" 529c957c526SChuck Lever "length %Zu > %Zu\n", hdrlen, iov->iov_len); 5301da177e4SLinus Torvalds return -errno_NFSERR_IO; 5311da177e4SLinus Torvalds } else if (iov->iov_len != hdrlen) { 5321da177e4SLinus Torvalds dprintk("NFS: READDIR header is short. iovec will be shifted.\n"); 5331da177e4SLinus Torvalds xdr_shift_buf(rcvbuf, iov->iov_len - hdrlen); 5341da177e4SLinus Torvalds } 5351da177e4SLinus Torvalds 5361da177e4SLinus Torvalds pglen = rcvbuf->page_len; 5371da177e4SLinus Torvalds recvd = rcvbuf->len - hdrlen; 5381da177e4SLinus Torvalds if (pglen > recvd) 5391da177e4SLinus Torvalds pglen = recvd; 5401da177e4SLinus Torvalds page = rcvbuf->pages; 541d61005a6SAl Viro kaddr = p = kmap_atomic(*page, KM_USER0); 542d61005a6SAl Viro end = (__be32 *)((char *)p + pglen); 5431da177e4SLinus Torvalds entry = p; 544643f8111SJeff Layton 545643f8111SJeff Layton /* Make sure the packet actually has a value_follows and EOF entry */ 546643f8111SJeff Layton if ((entry + 1) > end) 547643f8111SJeff Layton goto short_pkt; 548643f8111SJeff Layton 549643f8111SJeff Layton for (; *p++; nr++) { 5501da177e4SLinus Torvalds if (p + 3 > end) 5511da177e4SLinus Torvalds goto short_pkt; 5521da177e4SLinus Torvalds p += 2; /* inode # */ 5531da177e4SLinus Torvalds len = ntohl(*p++); /* string length */ 5541da177e4SLinus Torvalds p += XDR_QUADLEN(len) + 2; /* name + cookie */ 5551da177e4SLinus Torvalds if (len > NFS3_MAXNAMLEN) { 556c957c526SChuck Lever dprintk("NFS: giant filename in readdir (len 0x%x)!\n", 5571da177e4SLinus Torvalds len); 5581da177e4SLinus Torvalds goto err_unmap; 5591da177e4SLinus Torvalds } 5601da177e4SLinus Torvalds 5611da177e4SLinus Torvalds if (res->plus) { 5621da177e4SLinus Torvalds /* post_op_attr */ 5631da177e4SLinus Torvalds if (p + 2 > end) 5641da177e4SLinus Torvalds goto short_pkt; 5651da177e4SLinus Torvalds if (*p++) { 5661da177e4SLinus Torvalds p += 21; 5671da177e4SLinus Torvalds if (p + 1 > end) 5681da177e4SLinus Torvalds goto short_pkt; 5691da177e4SLinus Torvalds } 5701da177e4SLinus Torvalds /* post_op_fh3 */ 5711da177e4SLinus Torvalds if (*p++) { 5721da177e4SLinus Torvalds if (p + 1 > end) 5731da177e4SLinus Torvalds goto short_pkt; 5741da177e4SLinus Torvalds len = ntohl(*p++); 5751da177e4SLinus Torvalds if (len > NFS3_FHSIZE) { 576fe82a183SChuck Lever dprintk("NFS: giant filehandle in " 577c957c526SChuck Lever "readdir (len 0x%x)!\n", len); 5781da177e4SLinus Torvalds goto err_unmap; 5791da177e4SLinus Torvalds } 5801da177e4SLinus Torvalds p += XDR_QUADLEN(len); 5811da177e4SLinus Torvalds } 5821da177e4SLinus Torvalds } 5831da177e4SLinus Torvalds 5841da177e4SLinus Torvalds if (p + 2 > end) 5851da177e4SLinus Torvalds goto short_pkt; 5861da177e4SLinus Torvalds entry = p; 5871da177e4SLinus Torvalds } 588643f8111SJeff Layton 589643f8111SJeff Layton /* 590643f8111SJeff Layton * Apparently some server sends responses that are a valid size, but 591643f8111SJeff Layton * contain no entries, and have value_follows==0 and EOF==0. For 592643f8111SJeff Layton * those, just set the EOF marker. 593643f8111SJeff Layton */ 594643f8111SJeff Layton if (!nr && entry[1] == 0) { 595643f8111SJeff Layton dprintk("NFS: readdir reply truncated!\n"); 596643f8111SJeff Layton entry[1] = 1; 597643f8111SJeff Layton } 5981da177e4SLinus Torvalds out: 5991da177e4SLinus Torvalds kunmap_atomic(kaddr, KM_USER0); 6001da177e4SLinus Torvalds return nr; 6011da177e4SLinus Torvalds short_pkt: 602643f8111SJeff Layton /* 603643f8111SJeff Layton * When we get a short packet there are 2 possibilities. We can 604643f8111SJeff Layton * return an error, or fix up the response to look like a valid 605643f8111SJeff Layton * response and return what we have so far. If there are no 606643f8111SJeff Layton * entries and the packet was short, then return -EIO. If there 607643f8111SJeff Layton * are valid entries in the response, return them and pretend that 608643f8111SJeff Layton * the call was successful, but incomplete. The caller can retry the 609643f8111SJeff Layton * readdir starting at the last cookie. 610643f8111SJeff Layton */ 6111da177e4SLinus Torvalds entry[0] = entry[1] = 0; 612643f8111SJeff Layton if (!nr) 613643f8111SJeff Layton nr = -errno_NFSERR_IO; 6141da177e4SLinus Torvalds goto out; 6151da177e4SLinus Torvalds err_unmap: 6161da177e4SLinus Torvalds nr = -errno_NFSERR_IO; 6171da177e4SLinus Torvalds goto out; 6181da177e4SLinus Torvalds } 6191da177e4SLinus Torvalds 6200dbb4c67SAl Viro __be32 * 6210dbb4c67SAl Viro nfs3_decode_dirent(__be32 *p, struct nfs_entry *entry, int plus) 6221da177e4SLinus Torvalds { 6231da177e4SLinus Torvalds struct nfs_entry old = *entry; 6241da177e4SLinus Torvalds 6251da177e4SLinus Torvalds if (!*p++) { 6261da177e4SLinus Torvalds if (!*p) 6271da177e4SLinus Torvalds return ERR_PTR(-EAGAIN); 6281da177e4SLinus Torvalds entry->eof = 1; 6291da177e4SLinus Torvalds return ERR_PTR(-EBADCOOKIE); 6301da177e4SLinus Torvalds } 6311da177e4SLinus Torvalds 6321da177e4SLinus Torvalds p = xdr_decode_hyper(p, &entry->ino); 6331da177e4SLinus Torvalds entry->len = ntohl(*p++); 6341da177e4SLinus Torvalds entry->name = (const char *) p; 6351da177e4SLinus Torvalds p += XDR_QUADLEN(entry->len); 6361da177e4SLinus Torvalds entry->prev_cookie = entry->cookie; 6371da177e4SLinus Torvalds p = xdr_decode_hyper(p, &entry->cookie); 6381da177e4SLinus Torvalds 6391da177e4SLinus Torvalds if (plus) { 6401da177e4SLinus Torvalds entry->fattr->valid = 0; 6411da177e4SLinus Torvalds p = xdr_decode_post_op_attr(p, entry->fattr); 6421da177e4SLinus Torvalds /* In fact, a post_op_fh3: */ 6431da177e4SLinus Torvalds if (*p++) { 6441da177e4SLinus Torvalds p = xdr_decode_fhandle(p, entry->fh); 6451da177e4SLinus Torvalds /* Ugh -- server reply was truncated */ 6461da177e4SLinus Torvalds if (p == NULL) { 6471da177e4SLinus Torvalds dprintk("NFS: FH truncated\n"); 6481da177e4SLinus Torvalds *entry = old; 6491da177e4SLinus Torvalds return ERR_PTR(-EAGAIN); 6501da177e4SLinus Torvalds } 6511da177e4SLinus Torvalds } else 6521da177e4SLinus Torvalds memset((u8*)(entry->fh), 0, sizeof(*entry->fh)); 6531da177e4SLinus Torvalds } 6541da177e4SLinus Torvalds 6551da177e4SLinus Torvalds entry->eof = !p[0] && p[1]; 6561da177e4SLinus Torvalds return p; 6571da177e4SLinus Torvalds } 6581da177e4SLinus Torvalds 6591da177e4SLinus Torvalds /* 6601da177e4SLinus Torvalds * Encode COMMIT arguments 6611da177e4SLinus Torvalds */ 6621da177e4SLinus Torvalds static int 663d61005a6SAl Viro nfs3_xdr_commitargs(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args) 6641da177e4SLinus Torvalds { 6651da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fh); 6661da177e4SLinus Torvalds p = xdr_encode_hyper(p, args->offset); 6671da177e4SLinus Torvalds *p++ = htonl(args->count); 6681da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 6691da177e4SLinus Torvalds return 0; 6701da177e4SLinus Torvalds } 6711da177e4SLinus Torvalds 672b7fa0554SAndreas Gruenbacher #ifdef CONFIG_NFS_V3_ACL 673b7fa0554SAndreas Gruenbacher /* 674b7fa0554SAndreas Gruenbacher * Encode GETACL arguments 675b7fa0554SAndreas Gruenbacher */ 676b7fa0554SAndreas Gruenbacher static int 677d61005a6SAl Viro nfs3_xdr_getaclargs(struct rpc_rqst *req, __be32 *p, 678b7fa0554SAndreas Gruenbacher struct nfs3_getaclargs *args) 679b7fa0554SAndreas Gruenbacher { 6801be27f36STrond Myklebust struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth; 681b7fa0554SAndreas Gruenbacher unsigned int replen; 682b7fa0554SAndreas Gruenbacher 683b7fa0554SAndreas Gruenbacher p = xdr_encode_fhandle(p, args->fh); 684b7fa0554SAndreas Gruenbacher *p++ = htonl(args->mask); 685b7fa0554SAndreas Gruenbacher req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 686b7fa0554SAndreas Gruenbacher 687b7fa0554SAndreas Gruenbacher if (args->mask & (NFS_ACL | NFS_DFACL)) { 688b7fa0554SAndreas Gruenbacher /* Inline the page array */ 689b7fa0554SAndreas Gruenbacher replen = (RPC_REPHDRSIZE + auth->au_rslack + 690b7fa0554SAndreas Gruenbacher ACL3_getaclres_sz) << 2; 691b7fa0554SAndreas Gruenbacher xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, 0, 692b7fa0554SAndreas Gruenbacher NFSACL_MAXPAGES << PAGE_SHIFT); 693b7fa0554SAndreas Gruenbacher } 694b7fa0554SAndreas Gruenbacher return 0; 695b7fa0554SAndreas Gruenbacher } 696b7fa0554SAndreas Gruenbacher 697b7fa0554SAndreas Gruenbacher /* 698b7fa0554SAndreas Gruenbacher * Encode SETACL arguments 699b7fa0554SAndreas Gruenbacher */ 700b7fa0554SAndreas Gruenbacher static int 701d61005a6SAl Viro nfs3_xdr_setaclargs(struct rpc_rqst *req, __be32 *p, 702b7fa0554SAndreas Gruenbacher struct nfs3_setaclargs *args) 703b7fa0554SAndreas Gruenbacher { 704b7fa0554SAndreas Gruenbacher struct xdr_buf *buf = &req->rq_snd_buf; 705ae46141fSTrond Myklebust unsigned int base; 706ae46141fSTrond Myklebust int err; 707b7fa0554SAndreas Gruenbacher 708b7fa0554SAndreas Gruenbacher p = xdr_encode_fhandle(p, NFS_FH(args->inode)); 709b7fa0554SAndreas Gruenbacher *p++ = htonl(args->mask); 710ae46141fSTrond Myklebust req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 711ae46141fSTrond Myklebust base = req->rq_slen; 712b7fa0554SAndreas Gruenbacher 713ae46141fSTrond Myklebust if (args->npages != 0) 714ae46141fSTrond Myklebust xdr_encode_pages(buf, args->pages, 0, args->len); 715ae46141fSTrond Myklebust else 716ae46141fSTrond Myklebust req->rq_slen += args->len; 717b7fa0554SAndreas Gruenbacher 718b7fa0554SAndreas Gruenbacher err = nfsacl_encode(buf, base, args->inode, 719b7fa0554SAndreas Gruenbacher (args->mask & NFS_ACL) ? 720b7fa0554SAndreas Gruenbacher args->acl_access : NULL, 1, 0); 721b7fa0554SAndreas Gruenbacher if (err > 0) 722b7fa0554SAndreas Gruenbacher err = nfsacl_encode(buf, base + err, args->inode, 723b7fa0554SAndreas Gruenbacher (args->mask & NFS_DFACL) ? 724b7fa0554SAndreas Gruenbacher args->acl_default : NULL, 1, 725b7fa0554SAndreas Gruenbacher NFS_ACL_DEFAULT); 726b7fa0554SAndreas Gruenbacher return (err > 0) ? 0 : err; 727b7fa0554SAndreas Gruenbacher } 728b7fa0554SAndreas Gruenbacher #endif /* CONFIG_NFS_V3_ACL */ 729b7fa0554SAndreas Gruenbacher 7301da177e4SLinus Torvalds /* 7311da177e4SLinus Torvalds * NFS XDR decode functions 7321da177e4SLinus Torvalds */ 7331da177e4SLinus Torvalds 7341da177e4SLinus Torvalds /* 7351da177e4SLinus Torvalds * Decode attrstat reply. 7361da177e4SLinus Torvalds */ 7371da177e4SLinus Torvalds static int 738d61005a6SAl Viro nfs3_xdr_attrstat(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr) 7391da177e4SLinus Torvalds { 7401da177e4SLinus Torvalds int status; 7411da177e4SLinus Torvalds 7421da177e4SLinus Torvalds if ((status = ntohl(*p++))) 743856dff3dSBenny Halevy return nfs_stat_to_errno(status); 7441da177e4SLinus Torvalds xdr_decode_fattr(p, fattr); 7451da177e4SLinus Torvalds return 0; 7461da177e4SLinus Torvalds } 7471da177e4SLinus Torvalds 7481da177e4SLinus Torvalds /* 7491da177e4SLinus Torvalds * Decode status+wcc_data reply 7501da177e4SLinus Torvalds * SATTR, REMOVE, RMDIR 7511da177e4SLinus Torvalds */ 7521da177e4SLinus Torvalds static int 753d61005a6SAl Viro nfs3_xdr_wccstat(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr) 7541da177e4SLinus Torvalds { 7551da177e4SLinus Torvalds int status; 7561da177e4SLinus Torvalds 7571da177e4SLinus Torvalds if ((status = ntohl(*p++))) 758856dff3dSBenny Halevy status = nfs_stat_to_errno(status); 7591da177e4SLinus Torvalds xdr_decode_wcc_data(p, fattr); 7601da177e4SLinus Torvalds return status; 7611da177e4SLinus Torvalds } 7621da177e4SLinus Torvalds 7634fdc17b2STrond Myklebust static int 7644fdc17b2STrond Myklebust nfs3_xdr_removeres(struct rpc_rqst *req, __be32 *p, struct nfs_removeres *res) 7654fdc17b2STrond Myklebust { 7664fdc17b2STrond Myklebust return nfs3_xdr_wccstat(req, p, &res->dir_attr); 7674fdc17b2STrond Myklebust } 7684fdc17b2STrond Myklebust 7691da177e4SLinus Torvalds /* 7701da177e4SLinus Torvalds * Decode LOOKUP reply 7711da177e4SLinus Torvalds */ 7721da177e4SLinus Torvalds static int 773d61005a6SAl Viro nfs3_xdr_lookupres(struct rpc_rqst *req, __be32 *p, struct nfs3_diropres *res) 7741da177e4SLinus Torvalds { 7751da177e4SLinus Torvalds int status; 7761da177e4SLinus Torvalds 7771da177e4SLinus Torvalds if ((status = ntohl(*p++))) { 778856dff3dSBenny Halevy status = nfs_stat_to_errno(status); 7791da177e4SLinus Torvalds } else { 7801da177e4SLinus Torvalds if (!(p = xdr_decode_fhandle(p, res->fh))) 7811da177e4SLinus Torvalds return -errno_NFSERR_IO; 7821da177e4SLinus Torvalds p = xdr_decode_post_op_attr(p, res->fattr); 7831da177e4SLinus Torvalds } 7841da177e4SLinus Torvalds xdr_decode_post_op_attr(p, res->dir_attr); 7851da177e4SLinus Torvalds return status; 7861da177e4SLinus Torvalds } 7871da177e4SLinus Torvalds 7881da177e4SLinus Torvalds /* 7891da177e4SLinus Torvalds * Decode ACCESS reply 7901da177e4SLinus Torvalds */ 7911da177e4SLinus Torvalds static int 792d61005a6SAl Viro nfs3_xdr_accessres(struct rpc_rqst *req, __be32 *p, struct nfs3_accessres *res) 7931da177e4SLinus Torvalds { 7941da177e4SLinus Torvalds int status = ntohl(*p++); 7951da177e4SLinus Torvalds 7961da177e4SLinus Torvalds p = xdr_decode_post_op_attr(p, res->fattr); 7971da177e4SLinus Torvalds if (status) 798856dff3dSBenny Halevy return nfs_stat_to_errno(status); 7991da177e4SLinus Torvalds res->access = ntohl(*p++); 8001da177e4SLinus Torvalds return 0; 8011da177e4SLinus Torvalds } 8021da177e4SLinus Torvalds 8031da177e4SLinus Torvalds static int 804d61005a6SAl Viro nfs3_xdr_readlinkargs(struct rpc_rqst *req, __be32 *p, struct nfs3_readlinkargs *args) 8051da177e4SLinus Torvalds { 8061be27f36STrond Myklebust struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth; 8071da177e4SLinus Torvalds unsigned int replen; 8081da177e4SLinus Torvalds 8091da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fh); 8101da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 8111da177e4SLinus Torvalds 8121da177e4SLinus Torvalds /* Inline the page array */ 8131da177e4SLinus Torvalds replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readlinkres_sz) << 2; 8141da177e4SLinus Torvalds xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, args->pgbase, args->pglen); 8151da177e4SLinus Torvalds return 0; 8161da177e4SLinus Torvalds } 8171da177e4SLinus Torvalds 8181da177e4SLinus Torvalds /* 8191da177e4SLinus Torvalds * Decode READLINK reply 8201da177e4SLinus Torvalds */ 8211da177e4SLinus Torvalds static int 822d61005a6SAl Viro nfs3_xdr_readlinkres(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr) 8231da177e4SLinus Torvalds { 8241da177e4SLinus Torvalds struct xdr_buf *rcvbuf = &req->rq_rcv_buf; 8251da177e4SLinus Torvalds struct kvec *iov = rcvbuf->head; 826c957c526SChuck Lever size_t hdrlen; 827c957c526SChuck Lever u32 len, recvd; 8281da177e4SLinus Torvalds char *kaddr; 8291da177e4SLinus Torvalds int status; 8301da177e4SLinus Torvalds 8311da177e4SLinus Torvalds status = ntohl(*p++); 8321da177e4SLinus Torvalds p = xdr_decode_post_op_attr(p, fattr); 8331da177e4SLinus Torvalds 8341da177e4SLinus Torvalds if (status != 0) 835856dff3dSBenny Halevy return nfs_stat_to_errno(status); 8361da177e4SLinus Torvalds 8371da177e4SLinus Torvalds /* Convert length of symlink */ 8381da177e4SLinus Torvalds len = ntohl(*p++); 839c957c526SChuck Lever if (len >= rcvbuf->page_len) { 840fe82a183SChuck Lever dprintk("nfs: server returned giant symlink!\n"); 8411da177e4SLinus Torvalds return -ENAMETOOLONG; 8421da177e4SLinus Torvalds } 8431da177e4SLinus Torvalds 8441da177e4SLinus Torvalds hdrlen = (u8 *) p - (u8 *) iov->iov_base; 8451da177e4SLinus Torvalds if (iov->iov_len < hdrlen) { 846fe82a183SChuck Lever dprintk("NFS: READLINK reply header overflowed:" 847c957c526SChuck Lever "length %Zu > %Zu\n", hdrlen, iov->iov_len); 8481da177e4SLinus Torvalds return -errno_NFSERR_IO; 8491da177e4SLinus Torvalds } else if (iov->iov_len != hdrlen) { 850fe82a183SChuck Lever dprintk("NFS: READLINK header is short. " 851fe82a183SChuck Lever "iovec will be shifted.\n"); 8521da177e4SLinus Torvalds xdr_shift_buf(rcvbuf, iov->iov_len - hdrlen); 8531da177e4SLinus Torvalds } 8541da177e4SLinus Torvalds recvd = req->rq_rcv_buf.len - hdrlen; 8551da177e4SLinus Torvalds if (recvd < len) { 856fe82a183SChuck Lever dprintk("NFS: server cheating in readlink reply: " 8571da177e4SLinus Torvalds "count %u > recvd %u\n", len, recvd); 8581da177e4SLinus Torvalds return -EIO; 8591da177e4SLinus Torvalds } 8601da177e4SLinus Torvalds 8611da177e4SLinus Torvalds /* NULL terminate the string we got */ 8621da177e4SLinus Torvalds kaddr = (char*)kmap_atomic(rcvbuf->pages[0], KM_USER0); 8631da177e4SLinus Torvalds kaddr[len+rcvbuf->page_base] = '\0'; 8641da177e4SLinus Torvalds kunmap_atomic(kaddr, KM_USER0); 8651da177e4SLinus Torvalds return 0; 8661da177e4SLinus Torvalds } 8671da177e4SLinus Torvalds 8681da177e4SLinus Torvalds /* 8691da177e4SLinus Torvalds * Decode READ reply 8701da177e4SLinus Torvalds */ 8711da177e4SLinus Torvalds static int 872d61005a6SAl Viro nfs3_xdr_readres(struct rpc_rqst *req, __be32 *p, struct nfs_readres *res) 8731da177e4SLinus Torvalds { 8741da177e4SLinus Torvalds struct kvec *iov = req->rq_rcv_buf.head; 875c957c526SChuck Lever size_t hdrlen; 876c957c526SChuck Lever u32 count, ocount, recvd; 877c957c526SChuck Lever int status; 8781da177e4SLinus Torvalds 8791da177e4SLinus Torvalds status = ntohl(*p++); 8801da177e4SLinus Torvalds p = xdr_decode_post_op_attr(p, res->fattr); 8811da177e4SLinus Torvalds 8821da177e4SLinus Torvalds if (status != 0) 883856dff3dSBenny Halevy return nfs_stat_to_errno(status); 8841da177e4SLinus Torvalds 885c957c526SChuck Lever /* Decode reply count and EOF flag. NFSv3 is somewhat redundant 8861da177e4SLinus Torvalds * in that it puts the count both in the res struct and in the 8871da177e4SLinus Torvalds * opaque data count. */ 8881da177e4SLinus Torvalds count = ntohl(*p++); 8891da177e4SLinus Torvalds res->eof = ntohl(*p++); 8901da177e4SLinus Torvalds ocount = ntohl(*p++); 8911da177e4SLinus Torvalds 8921da177e4SLinus Torvalds if (ocount != count) { 893fe82a183SChuck Lever dprintk("NFS: READ count doesn't match RPC opaque count.\n"); 8941da177e4SLinus Torvalds return -errno_NFSERR_IO; 8951da177e4SLinus Torvalds } 8961da177e4SLinus Torvalds 8971da177e4SLinus Torvalds hdrlen = (u8 *) p - (u8 *) iov->iov_base; 8981da177e4SLinus Torvalds if (iov->iov_len < hdrlen) { 899fe82a183SChuck Lever dprintk("NFS: READ reply header overflowed:" 900c957c526SChuck Lever "length %Zu > %Zu\n", hdrlen, iov->iov_len); 9011da177e4SLinus Torvalds return -errno_NFSERR_IO; 9021da177e4SLinus Torvalds } else if (iov->iov_len != hdrlen) { 9031da177e4SLinus Torvalds dprintk("NFS: READ header is short. iovec will be shifted.\n"); 9041da177e4SLinus Torvalds xdr_shift_buf(&req->rq_rcv_buf, iov->iov_len - hdrlen); 9051da177e4SLinus Torvalds } 9061da177e4SLinus Torvalds 9071da177e4SLinus Torvalds recvd = req->rq_rcv_buf.len - hdrlen; 9081da177e4SLinus Torvalds if (count > recvd) { 909fe82a183SChuck Lever dprintk("NFS: server cheating in read reply: " 910c957c526SChuck Lever "count %u > recvd %u\n", count, recvd); 9111da177e4SLinus Torvalds count = recvd; 9121da177e4SLinus Torvalds res->eof = 0; 9131da177e4SLinus Torvalds } 9141da177e4SLinus Torvalds 9151da177e4SLinus Torvalds if (count < res->count) 9161da177e4SLinus Torvalds res->count = count; 9171da177e4SLinus Torvalds 9181da177e4SLinus Torvalds return count; 9191da177e4SLinus Torvalds } 9201da177e4SLinus Torvalds 9211da177e4SLinus Torvalds /* 9221da177e4SLinus Torvalds * Decode WRITE response 9231da177e4SLinus Torvalds */ 9241da177e4SLinus Torvalds static int 925d61005a6SAl Viro nfs3_xdr_writeres(struct rpc_rqst *req, __be32 *p, struct nfs_writeres *res) 9261da177e4SLinus Torvalds { 9271da177e4SLinus Torvalds int status; 9281da177e4SLinus Torvalds 9291da177e4SLinus Torvalds status = ntohl(*p++); 9301da177e4SLinus Torvalds p = xdr_decode_wcc_data(p, res->fattr); 9311da177e4SLinus Torvalds 9321da177e4SLinus Torvalds if (status != 0) 933856dff3dSBenny Halevy return nfs_stat_to_errno(status); 9341da177e4SLinus Torvalds 9351da177e4SLinus Torvalds res->count = ntohl(*p++); 9361da177e4SLinus Torvalds res->verf->committed = (enum nfs3_stable_how)ntohl(*p++); 9371da177e4SLinus Torvalds res->verf->verifier[0] = *p++; 9381da177e4SLinus Torvalds res->verf->verifier[1] = *p++; 9391da177e4SLinus Torvalds 9401da177e4SLinus Torvalds return res->count; 9411da177e4SLinus Torvalds } 9421da177e4SLinus Torvalds 9431da177e4SLinus Torvalds /* 9441da177e4SLinus Torvalds * Decode a CREATE response 9451da177e4SLinus Torvalds */ 9461da177e4SLinus Torvalds static int 947d61005a6SAl Viro nfs3_xdr_createres(struct rpc_rqst *req, __be32 *p, struct nfs3_diropres *res) 9481da177e4SLinus Torvalds { 9491da177e4SLinus Torvalds int status; 9501da177e4SLinus Torvalds 9511da177e4SLinus Torvalds status = ntohl(*p++); 9521da177e4SLinus Torvalds if (status == 0) { 9531da177e4SLinus Torvalds if (*p++) { 9541da177e4SLinus Torvalds if (!(p = xdr_decode_fhandle(p, res->fh))) 9551da177e4SLinus Torvalds return -errno_NFSERR_IO; 9561da177e4SLinus Torvalds p = xdr_decode_post_op_attr(p, res->fattr); 9571da177e4SLinus Torvalds } else { 9581da177e4SLinus Torvalds memset(res->fh, 0, sizeof(*res->fh)); 9591da177e4SLinus Torvalds /* Do decode post_op_attr but set it to NULL */ 9601da177e4SLinus Torvalds p = xdr_decode_post_op_attr(p, res->fattr); 9611da177e4SLinus Torvalds res->fattr->valid = 0; 9621da177e4SLinus Torvalds } 9631da177e4SLinus Torvalds } else { 964856dff3dSBenny Halevy status = nfs_stat_to_errno(status); 9651da177e4SLinus Torvalds } 9661da177e4SLinus Torvalds p = xdr_decode_wcc_data(p, res->dir_attr); 9671da177e4SLinus Torvalds return status; 9681da177e4SLinus Torvalds } 9691da177e4SLinus Torvalds 9701da177e4SLinus Torvalds /* 9711da177e4SLinus Torvalds * Decode RENAME reply 9721da177e4SLinus Torvalds */ 9731da177e4SLinus Torvalds static int 974d61005a6SAl Viro nfs3_xdr_renameres(struct rpc_rqst *req, __be32 *p, struct nfs3_renameres *res) 9751da177e4SLinus Torvalds { 9761da177e4SLinus Torvalds int status; 9771da177e4SLinus Torvalds 9781da177e4SLinus Torvalds if ((status = ntohl(*p++)) != 0) 979856dff3dSBenny Halevy status = nfs_stat_to_errno(status); 9801da177e4SLinus Torvalds p = xdr_decode_wcc_data(p, res->fromattr); 9811da177e4SLinus Torvalds p = xdr_decode_wcc_data(p, res->toattr); 9821da177e4SLinus Torvalds return status; 9831da177e4SLinus Torvalds } 9841da177e4SLinus Torvalds 9851da177e4SLinus Torvalds /* 9861da177e4SLinus Torvalds * Decode LINK reply 9871da177e4SLinus Torvalds */ 9881da177e4SLinus Torvalds static int 989d61005a6SAl Viro nfs3_xdr_linkres(struct rpc_rqst *req, __be32 *p, struct nfs3_linkres *res) 9901da177e4SLinus Torvalds { 9911da177e4SLinus Torvalds int status; 9921da177e4SLinus Torvalds 9931da177e4SLinus Torvalds if ((status = ntohl(*p++)) != 0) 994856dff3dSBenny Halevy status = nfs_stat_to_errno(status); 9951da177e4SLinus Torvalds p = xdr_decode_post_op_attr(p, res->fattr); 9961da177e4SLinus Torvalds p = xdr_decode_wcc_data(p, res->dir_attr); 9971da177e4SLinus Torvalds return status; 9981da177e4SLinus Torvalds } 9991da177e4SLinus Torvalds 10001da177e4SLinus Torvalds /* 10011da177e4SLinus Torvalds * Decode FSSTAT reply 10021da177e4SLinus Torvalds */ 10031da177e4SLinus Torvalds static int 1004d61005a6SAl Viro nfs3_xdr_fsstatres(struct rpc_rqst *req, __be32 *p, struct nfs_fsstat *res) 10051da177e4SLinus Torvalds { 10061da177e4SLinus Torvalds int status; 10071da177e4SLinus Torvalds 10081da177e4SLinus Torvalds status = ntohl(*p++); 10091da177e4SLinus Torvalds 10101da177e4SLinus Torvalds p = xdr_decode_post_op_attr(p, res->fattr); 10111da177e4SLinus Torvalds if (status != 0) 1012856dff3dSBenny Halevy return nfs_stat_to_errno(status); 10131da177e4SLinus Torvalds 10141da177e4SLinus Torvalds p = xdr_decode_hyper(p, &res->tbytes); 10151da177e4SLinus Torvalds p = xdr_decode_hyper(p, &res->fbytes); 10161da177e4SLinus Torvalds p = xdr_decode_hyper(p, &res->abytes); 10171da177e4SLinus Torvalds p = xdr_decode_hyper(p, &res->tfiles); 10181da177e4SLinus Torvalds p = xdr_decode_hyper(p, &res->ffiles); 10191da177e4SLinus Torvalds p = xdr_decode_hyper(p, &res->afiles); 10201da177e4SLinus Torvalds 10211da177e4SLinus Torvalds /* ignore invarsec */ 10221da177e4SLinus Torvalds return 0; 10231da177e4SLinus Torvalds } 10241da177e4SLinus Torvalds 10251da177e4SLinus Torvalds /* 10261da177e4SLinus Torvalds * Decode FSINFO reply 10271da177e4SLinus Torvalds */ 10281da177e4SLinus Torvalds static int 1029d61005a6SAl Viro nfs3_xdr_fsinfores(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *res) 10301da177e4SLinus Torvalds { 10311da177e4SLinus Torvalds int status; 10321da177e4SLinus Torvalds 10331da177e4SLinus Torvalds status = ntohl(*p++); 10341da177e4SLinus Torvalds 10351da177e4SLinus Torvalds p = xdr_decode_post_op_attr(p, res->fattr); 10361da177e4SLinus Torvalds if (status != 0) 1037856dff3dSBenny Halevy return nfs_stat_to_errno(status); 10381da177e4SLinus Torvalds 10391da177e4SLinus Torvalds res->rtmax = ntohl(*p++); 10401da177e4SLinus Torvalds res->rtpref = ntohl(*p++); 10411da177e4SLinus Torvalds res->rtmult = ntohl(*p++); 10421da177e4SLinus Torvalds res->wtmax = ntohl(*p++); 10431da177e4SLinus Torvalds res->wtpref = ntohl(*p++); 10441da177e4SLinus Torvalds res->wtmult = ntohl(*p++); 10451da177e4SLinus Torvalds res->dtpref = ntohl(*p++); 10461da177e4SLinus Torvalds p = xdr_decode_hyper(p, &res->maxfilesize); 10471da177e4SLinus Torvalds 10481da177e4SLinus Torvalds /* ignore time_delta and properties */ 10491da177e4SLinus Torvalds res->lease_time = 0; 10501da177e4SLinus Torvalds return 0; 10511da177e4SLinus Torvalds } 10521da177e4SLinus Torvalds 10531da177e4SLinus Torvalds /* 10541da177e4SLinus Torvalds * Decode PATHCONF reply 10551da177e4SLinus Torvalds */ 10561da177e4SLinus Torvalds static int 1057d61005a6SAl Viro nfs3_xdr_pathconfres(struct rpc_rqst *req, __be32 *p, struct nfs_pathconf *res) 10581da177e4SLinus Torvalds { 10591da177e4SLinus Torvalds int status; 10601da177e4SLinus Torvalds 10611da177e4SLinus Torvalds status = ntohl(*p++); 10621da177e4SLinus Torvalds 10631da177e4SLinus Torvalds p = xdr_decode_post_op_attr(p, res->fattr); 10641da177e4SLinus Torvalds if (status != 0) 1065856dff3dSBenny Halevy return nfs_stat_to_errno(status); 10661da177e4SLinus Torvalds res->max_link = ntohl(*p++); 10671da177e4SLinus Torvalds res->max_namelen = ntohl(*p++); 10681da177e4SLinus Torvalds 10691da177e4SLinus Torvalds /* ignore remaining fields */ 10701da177e4SLinus Torvalds return 0; 10711da177e4SLinus Torvalds } 10721da177e4SLinus Torvalds 10731da177e4SLinus Torvalds /* 10741da177e4SLinus Torvalds * Decode COMMIT reply 10751da177e4SLinus Torvalds */ 10761da177e4SLinus Torvalds static int 1077d61005a6SAl Viro nfs3_xdr_commitres(struct rpc_rqst *req, __be32 *p, struct nfs_writeres *res) 10781da177e4SLinus Torvalds { 10791da177e4SLinus Torvalds int status; 10801da177e4SLinus Torvalds 10811da177e4SLinus Torvalds status = ntohl(*p++); 10821da177e4SLinus Torvalds p = xdr_decode_wcc_data(p, res->fattr); 10831da177e4SLinus Torvalds if (status != 0) 1084856dff3dSBenny Halevy return nfs_stat_to_errno(status); 10851da177e4SLinus Torvalds 10861da177e4SLinus Torvalds res->verf->verifier[0] = *p++; 10871da177e4SLinus Torvalds res->verf->verifier[1] = *p++; 10881da177e4SLinus Torvalds return 0; 10891da177e4SLinus Torvalds } 10901da177e4SLinus Torvalds 1091b7fa0554SAndreas Gruenbacher #ifdef CONFIG_NFS_V3_ACL 1092b7fa0554SAndreas Gruenbacher /* 1093b7fa0554SAndreas Gruenbacher * Decode GETACL reply 1094b7fa0554SAndreas Gruenbacher */ 1095b7fa0554SAndreas Gruenbacher static int 1096d61005a6SAl Viro nfs3_xdr_getaclres(struct rpc_rqst *req, __be32 *p, 1097b7fa0554SAndreas Gruenbacher struct nfs3_getaclres *res) 1098b7fa0554SAndreas Gruenbacher { 1099b7fa0554SAndreas Gruenbacher struct xdr_buf *buf = &req->rq_rcv_buf; 1100b7fa0554SAndreas Gruenbacher int status = ntohl(*p++); 1101b7fa0554SAndreas Gruenbacher struct posix_acl **acl; 1102b7fa0554SAndreas Gruenbacher unsigned int *aclcnt; 1103b7fa0554SAndreas Gruenbacher int err, base; 1104b7fa0554SAndreas Gruenbacher 1105b7fa0554SAndreas Gruenbacher if (status != 0) 1106856dff3dSBenny Halevy return nfs_stat_to_errno(status); 1107b7fa0554SAndreas Gruenbacher p = xdr_decode_post_op_attr(p, res->fattr); 1108b7fa0554SAndreas Gruenbacher res->mask = ntohl(*p++); 1109b7fa0554SAndreas Gruenbacher if (res->mask & ~(NFS_ACL|NFS_ACLCNT|NFS_DFACL|NFS_DFACLCNT)) 1110b7fa0554SAndreas Gruenbacher return -EINVAL; 1111b7fa0554SAndreas Gruenbacher base = (char *)p - (char *)req->rq_rcv_buf.head->iov_base; 1112b7fa0554SAndreas Gruenbacher 1113b7fa0554SAndreas Gruenbacher acl = (res->mask & NFS_ACL) ? &res->acl_access : NULL; 1114b7fa0554SAndreas Gruenbacher aclcnt = (res->mask & NFS_ACLCNT) ? &res->acl_access_count : NULL; 1115b7fa0554SAndreas Gruenbacher err = nfsacl_decode(buf, base, aclcnt, acl); 1116b7fa0554SAndreas Gruenbacher 1117b7fa0554SAndreas Gruenbacher acl = (res->mask & NFS_DFACL) ? &res->acl_default : NULL; 1118b7fa0554SAndreas Gruenbacher aclcnt = (res->mask & NFS_DFACLCNT) ? &res->acl_default_count : NULL; 1119b7fa0554SAndreas Gruenbacher if (err > 0) 1120b7fa0554SAndreas Gruenbacher err = nfsacl_decode(buf, base + err, aclcnt, acl); 1121b7fa0554SAndreas Gruenbacher return (err > 0) ? 0 : err; 1122b7fa0554SAndreas Gruenbacher } 1123b7fa0554SAndreas Gruenbacher 1124b7fa0554SAndreas Gruenbacher /* 1125b7fa0554SAndreas Gruenbacher * Decode setacl reply. 1126b7fa0554SAndreas Gruenbacher */ 1127b7fa0554SAndreas Gruenbacher static int 1128d61005a6SAl Viro nfs3_xdr_setaclres(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr) 1129b7fa0554SAndreas Gruenbacher { 1130b7fa0554SAndreas Gruenbacher int status = ntohl(*p++); 1131b7fa0554SAndreas Gruenbacher 1132b7fa0554SAndreas Gruenbacher if (status) 1133856dff3dSBenny Halevy return nfs_stat_to_errno(status); 1134b7fa0554SAndreas Gruenbacher xdr_decode_post_op_attr(p, fattr); 1135b7fa0554SAndreas Gruenbacher return 0; 1136b7fa0554SAndreas Gruenbacher } 1137b7fa0554SAndreas Gruenbacher #endif /* CONFIG_NFS_V3_ACL */ 1138b7fa0554SAndreas Gruenbacher 11391da177e4SLinus Torvalds #define PROC(proc, argtype, restype, timer) \ 11401da177e4SLinus Torvalds [NFS3PROC_##proc] = { \ 11411da177e4SLinus Torvalds .p_proc = NFS3PROC_##proc, \ 11421da177e4SLinus Torvalds .p_encode = (kxdrproc_t) nfs3_xdr_##argtype, \ 11431da177e4SLinus Torvalds .p_decode = (kxdrproc_t) nfs3_xdr_##restype, \ 11442bea90d4SChuck Lever .p_arglen = NFS3_##argtype##_sz, \ 11452bea90d4SChuck Lever .p_replen = NFS3_##restype##_sz, \ 1146cc0175c1SChuck Lever .p_timer = timer, \ 1147cc0175c1SChuck Lever .p_statidx = NFS3PROC_##proc, \ 1148cc0175c1SChuck Lever .p_name = #proc, \ 11491da177e4SLinus Torvalds } 11501da177e4SLinus Torvalds 11511da177e4SLinus Torvalds struct rpc_procinfo nfs3_procedures[] = { 11521da177e4SLinus Torvalds PROC(GETATTR, fhandle, attrstat, 1), 11531da177e4SLinus Torvalds PROC(SETATTR, sattrargs, wccstat, 0), 11541da177e4SLinus Torvalds PROC(LOOKUP, diropargs, lookupres, 2), 11551da177e4SLinus Torvalds PROC(ACCESS, accessargs, accessres, 1), 11561da177e4SLinus Torvalds PROC(READLINK, readlinkargs, readlinkres, 3), 11571da177e4SLinus Torvalds PROC(READ, readargs, readres, 3), 11581da177e4SLinus Torvalds PROC(WRITE, writeargs, writeres, 4), 11591da177e4SLinus Torvalds PROC(CREATE, createargs, createres, 0), 11601da177e4SLinus Torvalds PROC(MKDIR, mkdirargs, createres, 0), 11611da177e4SLinus Torvalds PROC(SYMLINK, symlinkargs, createres, 0), 11621da177e4SLinus Torvalds PROC(MKNOD, mknodargs, createres, 0), 11634fdc17b2STrond Myklebust PROC(REMOVE, removeargs, removeres, 0), 11641da177e4SLinus Torvalds PROC(RMDIR, diropargs, wccstat, 0), 11651da177e4SLinus Torvalds PROC(RENAME, renameargs, renameres, 0), 11661da177e4SLinus Torvalds PROC(LINK, linkargs, linkres, 0), 11671da177e4SLinus Torvalds PROC(READDIR, readdirargs, readdirres, 3), 11681da177e4SLinus Torvalds PROC(READDIRPLUS, readdirargs, readdirres, 3), 11691da177e4SLinus Torvalds PROC(FSSTAT, fhandle, fsstatres, 0), 11701da177e4SLinus Torvalds PROC(FSINFO, fhandle, fsinfores, 0), 11711da177e4SLinus Torvalds PROC(PATHCONF, fhandle, pathconfres, 0), 11721da177e4SLinus Torvalds PROC(COMMIT, commitargs, commitres, 5), 11731da177e4SLinus Torvalds }; 11741da177e4SLinus Torvalds 11751da177e4SLinus Torvalds struct rpc_version nfs_version3 = { 11761da177e4SLinus Torvalds .number = 3, 1177e8c96f8cSTobias Klauser .nrprocs = ARRAY_SIZE(nfs3_procedures), 11781da177e4SLinus Torvalds .procs = nfs3_procedures 11791da177e4SLinus Torvalds }; 11801da177e4SLinus Torvalds 1181b7fa0554SAndreas Gruenbacher #ifdef CONFIG_NFS_V3_ACL 1182b7fa0554SAndreas Gruenbacher static struct rpc_procinfo nfs3_acl_procedures[] = { 1183b7fa0554SAndreas Gruenbacher [ACLPROC3_GETACL] = { 1184b7fa0554SAndreas Gruenbacher .p_proc = ACLPROC3_GETACL, 1185b7fa0554SAndreas Gruenbacher .p_encode = (kxdrproc_t) nfs3_xdr_getaclargs, 1186b7fa0554SAndreas Gruenbacher .p_decode = (kxdrproc_t) nfs3_xdr_getaclres, 11872bea90d4SChuck Lever .p_arglen = ACL3_getaclargs_sz, 11882bea90d4SChuck Lever .p_replen = ACL3_getaclres_sz, 1189b7fa0554SAndreas Gruenbacher .p_timer = 1, 1190cc0175c1SChuck Lever .p_name = "GETACL", 1191b7fa0554SAndreas Gruenbacher }, 1192b7fa0554SAndreas Gruenbacher [ACLPROC3_SETACL] = { 1193b7fa0554SAndreas Gruenbacher .p_proc = ACLPROC3_SETACL, 1194b7fa0554SAndreas Gruenbacher .p_encode = (kxdrproc_t) nfs3_xdr_setaclargs, 1195b7fa0554SAndreas Gruenbacher .p_decode = (kxdrproc_t) nfs3_xdr_setaclres, 11962bea90d4SChuck Lever .p_arglen = ACL3_setaclargs_sz, 11972bea90d4SChuck Lever .p_replen = ACL3_setaclres_sz, 1198b7fa0554SAndreas Gruenbacher .p_timer = 0, 1199cc0175c1SChuck Lever .p_name = "SETACL", 1200b7fa0554SAndreas Gruenbacher }, 1201b7fa0554SAndreas Gruenbacher }; 1202b7fa0554SAndreas Gruenbacher 1203b7fa0554SAndreas Gruenbacher struct rpc_version nfsacl_version3 = { 1204b7fa0554SAndreas Gruenbacher .number = 3, 1205b7fa0554SAndreas Gruenbacher .nrprocs = sizeof(nfs3_acl_procedures)/ 1206b7fa0554SAndreas Gruenbacher sizeof(nfs3_acl_procedures[0]), 1207b7fa0554SAndreas Gruenbacher .procs = nfs3_acl_procedures, 1208b7fa0554SAndreas Gruenbacher }; 1209b7fa0554SAndreas Gruenbacher #endif /* CONFIG_NFS_V3_ACL */ 1210