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) 531da177e4SLinus Torvalds #define NFS3_accessargs_sz (NFS3_fh_sz+1) 541da177e4SLinus Torvalds #define NFS3_readlinkargs_sz (NFS3_fh_sz) 551da177e4SLinus Torvalds #define NFS3_readargs_sz (NFS3_fh_sz+3) 561da177e4SLinus Torvalds #define NFS3_writeargs_sz (NFS3_fh_sz+5) 571da177e4SLinus Torvalds #define NFS3_createargs_sz (NFS3_diropargs_sz+NFS3_sattr_sz) 581da177e4SLinus Torvalds #define NFS3_mkdirargs_sz (NFS3_diropargs_sz+NFS3_sattr_sz) 5994a6d753SChuck Lever #define NFS3_symlinkargs_sz (NFS3_diropargs_sz+1+NFS3_sattr_sz) 601da177e4SLinus Torvalds #define NFS3_mknodargs_sz (NFS3_diropargs_sz+2+NFS3_sattr_sz) 611da177e4SLinus Torvalds #define NFS3_renameargs_sz (NFS3_diropargs_sz+NFS3_diropargs_sz) 621da177e4SLinus Torvalds #define NFS3_linkargs_sz (NFS3_fh_sz+NFS3_diropargs_sz) 631da177e4SLinus Torvalds #define NFS3_readdirargs_sz (NFS3_fh_sz+2) 641da177e4SLinus Torvalds #define NFS3_commitargs_sz (NFS3_fh_sz+3) 651da177e4SLinus Torvalds 661da177e4SLinus Torvalds #define NFS3_attrstat_sz (1+NFS3_fattr_sz) 671da177e4SLinus Torvalds #define NFS3_wccstat_sz (1+NFS3_wcc_data_sz) 681da177e4SLinus Torvalds #define NFS3_lookupres_sz (1+NFS3_fh_sz+(2 * NFS3_post_op_attr_sz)) 691da177e4SLinus Torvalds #define NFS3_accessres_sz (1+NFS3_post_op_attr_sz+1) 701da177e4SLinus Torvalds #define NFS3_readlinkres_sz (1+NFS3_post_op_attr_sz+1) 711da177e4SLinus Torvalds #define NFS3_readres_sz (1+NFS3_post_op_attr_sz+3) 721da177e4SLinus Torvalds #define NFS3_writeres_sz (1+NFS3_wcc_data_sz+4) 731da177e4SLinus Torvalds #define NFS3_createres_sz (1+NFS3_fh_sz+NFS3_post_op_attr_sz+NFS3_wcc_data_sz) 741da177e4SLinus Torvalds #define NFS3_renameres_sz (1+(2 * NFS3_wcc_data_sz)) 751da177e4SLinus Torvalds #define NFS3_linkres_sz (1+NFS3_post_op_attr_sz+NFS3_wcc_data_sz) 761da177e4SLinus Torvalds #define NFS3_readdirres_sz (1+NFS3_post_op_attr_sz+2) 771da177e4SLinus Torvalds #define NFS3_fsstatres_sz (1+NFS3_post_op_attr_sz+13) 781da177e4SLinus Torvalds #define NFS3_fsinfores_sz (1+NFS3_post_op_attr_sz+12) 791da177e4SLinus Torvalds #define NFS3_pathconfres_sz (1+NFS3_post_op_attr_sz+6) 801da177e4SLinus Torvalds #define NFS3_commitres_sz (1+NFS3_wcc_data_sz+2) 811da177e4SLinus Torvalds 82b7fa0554SAndreas Gruenbacher #define ACL3_getaclargs_sz (NFS3_fh_sz+1) 83b7fa0554SAndreas Gruenbacher #define ACL3_setaclargs_sz (NFS3_fh_sz+1+2*(2+5*3)) 84b7fa0554SAndreas Gruenbacher #define ACL3_getaclres_sz (1+NFS3_post_op_attr_sz+1+2*(2+5*3)) 85b7fa0554SAndreas Gruenbacher #define ACL3_setaclres_sz (1+NFS3_post_op_attr_sz) 86b7fa0554SAndreas Gruenbacher 871da177e4SLinus Torvalds /* 881da177e4SLinus Torvalds * Map file type to S_IFMT bits 891da177e4SLinus Torvalds */ 901da177e4SLinus Torvalds static struct { 911da177e4SLinus Torvalds unsigned int mode; 921da177e4SLinus Torvalds unsigned int nfs2type; 931da177e4SLinus Torvalds } nfs_type2fmt[] = { 941da177e4SLinus Torvalds { 0, NFNON }, 951da177e4SLinus Torvalds { S_IFREG, NFREG }, 961da177e4SLinus Torvalds { S_IFDIR, NFDIR }, 971da177e4SLinus Torvalds { S_IFBLK, NFBLK }, 981da177e4SLinus Torvalds { S_IFCHR, NFCHR }, 991da177e4SLinus Torvalds { S_IFLNK, NFLNK }, 1001da177e4SLinus Torvalds { S_IFSOCK, NFSOCK }, 1011da177e4SLinus Torvalds { S_IFIFO, NFFIFO }, 1021da177e4SLinus Torvalds { 0, NFBAD } 1031da177e4SLinus Torvalds }; 1041da177e4SLinus Torvalds 1051da177e4SLinus Torvalds /* 1061da177e4SLinus Torvalds * Common NFS XDR functions as inlines 1071da177e4SLinus Torvalds */ 108d61005a6SAl Viro static inline __be32 * 109d61005a6SAl Viro xdr_encode_fhandle(__be32 *p, 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; 1471da177e4SLinus Torvalds int fmode; 1481da177e4SLinus Torvalds 1491da177e4SLinus Torvalds type = ntohl(*p++); 1501da177e4SLinus Torvalds if (type >= NF3BAD) 1511da177e4SLinus Torvalds type = NF3BAD; 1521da177e4SLinus Torvalds fmode = nfs_type2fmt[type].mode; 1531da177e4SLinus Torvalds fattr->type = nfs_type2fmt[type].nfs2type; 1541da177e4SLinus Torvalds fattr->mode = (ntohl(*p++) & ~S_IFMT) | fmode; 1551da177e4SLinus Torvalds fattr->nlink = ntohl(*p++); 1561da177e4SLinus Torvalds fattr->uid = ntohl(*p++); 1571da177e4SLinus Torvalds fattr->gid = ntohl(*p++); 1581da177e4SLinus Torvalds p = xdr_decode_hyper(p, &fattr->size); 1591da177e4SLinus Torvalds p = xdr_decode_hyper(p, &fattr->du.nfs3.used); 1601da177e4SLinus Torvalds 1611da177e4SLinus Torvalds /* Turn remote device info into Linux-specific dev_t */ 1621da177e4SLinus Torvalds major = ntohl(*p++); 1631da177e4SLinus Torvalds minor = ntohl(*p++); 1641da177e4SLinus Torvalds fattr->rdev = MKDEV(major, minor); 1651da177e4SLinus Torvalds if (MAJOR(fattr->rdev) != major || MINOR(fattr->rdev) != minor) 1661da177e4SLinus Torvalds fattr->rdev = 0; 1671da177e4SLinus Torvalds 1688b4bdcf8STrond Myklebust p = xdr_decode_hyper(p, &fattr->fsid.major); 1698b4bdcf8STrond Myklebust fattr->fsid.minor = 0; 1701da177e4SLinus Torvalds p = xdr_decode_hyper(p, &fattr->fileid); 1711da177e4SLinus Torvalds p = xdr_decode_time3(p, &fattr->atime); 1721da177e4SLinus Torvalds p = xdr_decode_time3(p, &fattr->mtime); 1731da177e4SLinus Torvalds p = xdr_decode_time3(p, &fattr->ctime); 1741da177e4SLinus Torvalds 1751da177e4SLinus Torvalds /* Update the mode bits */ 1761da177e4SLinus Torvalds fattr->valid |= (NFS_ATTR_FATTR | NFS_ATTR_FATTR_V3); 1771da177e4SLinus Torvalds return p; 1781da177e4SLinus Torvalds } 1791da177e4SLinus Torvalds 180d61005a6SAl Viro static inline __be32 * 181d61005a6SAl Viro xdr_encode_sattr(__be32 *p, struct iattr *attr) 1821da177e4SLinus Torvalds { 1831da177e4SLinus Torvalds if (attr->ia_valid & ATTR_MODE) { 1841da177e4SLinus Torvalds *p++ = xdr_one; 185cf3fff54STrond Myklebust *p++ = htonl(attr->ia_mode & S_IALLUGO); 1861da177e4SLinus Torvalds } else { 1871da177e4SLinus Torvalds *p++ = xdr_zero; 1881da177e4SLinus Torvalds } 1891da177e4SLinus Torvalds if (attr->ia_valid & ATTR_UID) { 1901da177e4SLinus Torvalds *p++ = xdr_one; 1911da177e4SLinus Torvalds *p++ = htonl(attr->ia_uid); 1921da177e4SLinus Torvalds } else { 1931da177e4SLinus Torvalds *p++ = xdr_zero; 1941da177e4SLinus Torvalds } 1951da177e4SLinus Torvalds if (attr->ia_valid & ATTR_GID) { 1961da177e4SLinus Torvalds *p++ = xdr_one; 1971da177e4SLinus Torvalds *p++ = htonl(attr->ia_gid); 1981da177e4SLinus Torvalds } else { 1991da177e4SLinus Torvalds *p++ = xdr_zero; 2001da177e4SLinus Torvalds } 2011da177e4SLinus Torvalds if (attr->ia_valid & ATTR_SIZE) { 2021da177e4SLinus Torvalds *p++ = xdr_one; 2031da177e4SLinus Torvalds p = xdr_encode_hyper(p, (__u64) attr->ia_size); 2041da177e4SLinus Torvalds } else { 2051da177e4SLinus Torvalds *p++ = xdr_zero; 2061da177e4SLinus Torvalds } 2071da177e4SLinus Torvalds if (attr->ia_valid & ATTR_ATIME_SET) { 2081da177e4SLinus Torvalds *p++ = xdr_two; 2091da177e4SLinus Torvalds p = xdr_encode_time3(p, &attr->ia_atime); 2101da177e4SLinus Torvalds } else if (attr->ia_valid & ATTR_ATIME) { 2111da177e4SLinus Torvalds *p++ = xdr_one; 2121da177e4SLinus Torvalds } else { 2131da177e4SLinus Torvalds *p++ = xdr_zero; 2141da177e4SLinus Torvalds } 2151da177e4SLinus Torvalds if (attr->ia_valid & ATTR_MTIME_SET) { 2161da177e4SLinus Torvalds *p++ = xdr_two; 2171da177e4SLinus Torvalds p = xdr_encode_time3(p, &attr->ia_mtime); 2181da177e4SLinus Torvalds } else if (attr->ia_valid & ATTR_MTIME) { 2191da177e4SLinus Torvalds *p++ = xdr_one; 2201da177e4SLinus Torvalds } else { 2211da177e4SLinus Torvalds *p++ = xdr_zero; 2221da177e4SLinus Torvalds } 2231da177e4SLinus Torvalds return p; 2241da177e4SLinus Torvalds } 2251da177e4SLinus Torvalds 226d61005a6SAl Viro static inline __be32 * 227d61005a6SAl Viro xdr_decode_wcc_attr(__be32 *p, struct nfs_fattr *fattr) 2281da177e4SLinus Torvalds { 2291da177e4SLinus Torvalds p = xdr_decode_hyper(p, &fattr->pre_size); 2301da177e4SLinus Torvalds p = xdr_decode_time3(p, &fattr->pre_mtime); 2311da177e4SLinus Torvalds p = xdr_decode_time3(p, &fattr->pre_ctime); 2321da177e4SLinus Torvalds fattr->valid |= NFS_ATTR_WCC; 2331da177e4SLinus Torvalds return p; 2341da177e4SLinus Torvalds } 2351da177e4SLinus Torvalds 236d61005a6SAl Viro static inline __be32 * 237d61005a6SAl Viro xdr_decode_post_op_attr(__be32 *p, struct nfs_fattr *fattr) 2381da177e4SLinus Torvalds { 2391da177e4SLinus Torvalds if (*p++) 2401da177e4SLinus Torvalds p = xdr_decode_fattr(p, fattr); 2411da177e4SLinus Torvalds return p; 2421da177e4SLinus Torvalds } 2431da177e4SLinus Torvalds 244d61005a6SAl Viro static inline __be32 * 245d61005a6SAl Viro xdr_decode_pre_op_attr(__be32 *p, struct nfs_fattr *fattr) 2461da177e4SLinus Torvalds { 2471da177e4SLinus Torvalds if (*p++) 2481da177e4SLinus Torvalds return xdr_decode_wcc_attr(p, fattr); 2491da177e4SLinus Torvalds return p; 2501da177e4SLinus Torvalds } 2511da177e4SLinus Torvalds 2521da177e4SLinus Torvalds 253d61005a6SAl Viro static inline __be32 * 254d61005a6SAl Viro xdr_decode_wcc_data(__be32 *p, struct nfs_fattr *fattr) 2551da177e4SLinus Torvalds { 2561da177e4SLinus Torvalds p = xdr_decode_pre_op_attr(p, fattr); 2571da177e4SLinus Torvalds return xdr_decode_post_op_attr(p, fattr); 2581da177e4SLinus Torvalds } 2591da177e4SLinus Torvalds 2601da177e4SLinus Torvalds /* 2611da177e4SLinus Torvalds * NFS encode functions 2621da177e4SLinus Torvalds */ 2631da177e4SLinus Torvalds 2641da177e4SLinus Torvalds /* 2651da177e4SLinus Torvalds * Encode file handle argument 2661da177e4SLinus Torvalds */ 2671da177e4SLinus Torvalds static int 268d61005a6SAl Viro nfs3_xdr_fhandle(struct rpc_rqst *req, __be32 *p, struct nfs_fh *fh) 2691da177e4SLinus Torvalds { 2701da177e4SLinus Torvalds p = xdr_encode_fhandle(p, fh); 2711da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 2721da177e4SLinus Torvalds return 0; 2731da177e4SLinus Torvalds } 2741da177e4SLinus Torvalds 2751da177e4SLinus Torvalds /* 2761da177e4SLinus Torvalds * Encode SETATTR arguments 2771da177e4SLinus Torvalds */ 2781da177e4SLinus Torvalds static int 279d61005a6SAl Viro nfs3_xdr_sattrargs(struct rpc_rqst *req, __be32 *p, struct nfs3_sattrargs *args) 2801da177e4SLinus Torvalds { 2811da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fh); 2821da177e4SLinus Torvalds p = xdr_encode_sattr(p, args->sattr); 2831da177e4SLinus Torvalds *p++ = htonl(args->guard); 2841da177e4SLinus Torvalds if (args->guard) 2851da177e4SLinus Torvalds p = xdr_encode_time3(p, &args->guardtime); 2861da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 2871da177e4SLinus Torvalds return 0; 2881da177e4SLinus Torvalds } 2891da177e4SLinus Torvalds 2901da177e4SLinus Torvalds /* 2911da177e4SLinus Torvalds * Encode directory ops argument 2921da177e4SLinus Torvalds */ 2931da177e4SLinus Torvalds static int 294d61005a6SAl Viro nfs3_xdr_diropargs(struct rpc_rqst *req, __be32 *p, struct nfs3_diropargs *args) 2951da177e4SLinus Torvalds { 2961da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fh); 2971da177e4SLinus Torvalds p = xdr_encode_array(p, args->name, args->len); 2981da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 2991da177e4SLinus Torvalds return 0; 3001da177e4SLinus Torvalds } 3011da177e4SLinus Torvalds 3021da177e4SLinus Torvalds /* 3031da177e4SLinus Torvalds * Encode access() argument 3041da177e4SLinus Torvalds */ 3051da177e4SLinus Torvalds static int 306d61005a6SAl Viro nfs3_xdr_accessargs(struct rpc_rqst *req, __be32 *p, struct nfs3_accessargs *args) 3071da177e4SLinus Torvalds { 3081da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fh); 3091da177e4SLinus Torvalds *p++ = htonl(args->access); 3101da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 3111da177e4SLinus Torvalds return 0; 3121da177e4SLinus Torvalds } 3131da177e4SLinus Torvalds 3141da177e4SLinus Torvalds /* 3151da177e4SLinus Torvalds * Arguments to a READ call. Since we read data directly into the page 3161da177e4SLinus Torvalds * cache, we also set up the reply iovec here so that iov[1] points 3171da177e4SLinus Torvalds * exactly to the page we want to fetch. 3181da177e4SLinus Torvalds */ 3191da177e4SLinus Torvalds static int 320d61005a6SAl Viro nfs3_xdr_readargs(struct rpc_rqst *req, __be32 *p, struct nfs_readargs *args) 3211da177e4SLinus Torvalds { 3221da177e4SLinus Torvalds struct rpc_auth *auth = req->rq_task->tk_auth; 3231da177e4SLinus Torvalds unsigned int replen; 3241da177e4SLinus Torvalds u32 count = args->count; 3251da177e4SLinus Torvalds 3261da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fh); 3271da177e4SLinus Torvalds p = xdr_encode_hyper(p, args->offset); 3281da177e4SLinus Torvalds *p++ = htonl(count); 3291da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 3301da177e4SLinus Torvalds 3311da177e4SLinus Torvalds /* Inline the page array */ 3321da177e4SLinus Torvalds replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readres_sz) << 2; 3331da177e4SLinus Torvalds xdr_inline_pages(&req->rq_rcv_buf, replen, 3341da177e4SLinus Torvalds args->pages, args->pgbase, count); 3351da177e4SLinus Torvalds return 0; 3361da177e4SLinus Torvalds } 3371da177e4SLinus Torvalds 3381da177e4SLinus Torvalds /* 3391da177e4SLinus Torvalds * Write arguments. Splice the buffer to be written into the iovec. 3401da177e4SLinus Torvalds */ 3411da177e4SLinus Torvalds static int 342d61005a6SAl Viro nfs3_xdr_writeargs(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args) 3431da177e4SLinus Torvalds { 3441da177e4SLinus Torvalds struct xdr_buf *sndbuf = &req->rq_snd_buf; 3451da177e4SLinus Torvalds u32 count = args->count; 3461da177e4SLinus Torvalds 3471da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fh); 3481da177e4SLinus Torvalds p = xdr_encode_hyper(p, args->offset); 3491da177e4SLinus Torvalds *p++ = htonl(count); 3501da177e4SLinus Torvalds *p++ = htonl(args->stable); 3511da177e4SLinus Torvalds *p++ = htonl(count); 3521da177e4SLinus Torvalds sndbuf->len = xdr_adjust_iovec(sndbuf->head, p); 3531da177e4SLinus Torvalds 3541da177e4SLinus Torvalds /* Copy the page array */ 3551da177e4SLinus Torvalds xdr_encode_pages(sndbuf, args->pages, args->pgbase, count); 3561da177e4SLinus Torvalds return 0; 3571da177e4SLinus Torvalds } 3581da177e4SLinus Torvalds 3591da177e4SLinus Torvalds /* 3601da177e4SLinus Torvalds * Encode CREATE arguments 3611da177e4SLinus Torvalds */ 3621da177e4SLinus Torvalds static int 363d61005a6SAl Viro nfs3_xdr_createargs(struct rpc_rqst *req, __be32 *p, struct nfs3_createargs *args) 3641da177e4SLinus Torvalds { 3651da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fh); 3661da177e4SLinus Torvalds p = xdr_encode_array(p, args->name, args->len); 3671da177e4SLinus Torvalds 3681da177e4SLinus Torvalds *p++ = htonl(args->createmode); 3691da177e4SLinus Torvalds if (args->createmode == NFS3_CREATE_EXCLUSIVE) { 3701da177e4SLinus Torvalds *p++ = args->verifier[0]; 3711da177e4SLinus Torvalds *p++ = args->verifier[1]; 3721da177e4SLinus Torvalds } else 3731da177e4SLinus Torvalds p = xdr_encode_sattr(p, args->sattr); 3741da177e4SLinus Torvalds 3751da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 3761da177e4SLinus Torvalds return 0; 3771da177e4SLinus Torvalds } 3781da177e4SLinus Torvalds 3791da177e4SLinus Torvalds /* 3801da177e4SLinus Torvalds * Encode MKDIR arguments 3811da177e4SLinus Torvalds */ 3821da177e4SLinus Torvalds static int 383d61005a6SAl Viro nfs3_xdr_mkdirargs(struct rpc_rqst *req, __be32 *p, struct nfs3_mkdirargs *args) 3841da177e4SLinus Torvalds { 3851da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fh); 3861da177e4SLinus Torvalds p = xdr_encode_array(p, args->name, args->len); 3871da177e4SLinus Torvalds p = xdr_encode_sattr(p, args->sattr); 3881da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 3891da177e4SLinus Torvalds return 0; 3901da177e4SLinus Torvalds } 3911da177e4SLinus Torvalds 3921da177e4SLinus Torvalds /* 3931da177e4SLinus Torvalds * Encode SYMLINK arguments 3941da177e4SLinus Torvalds */ 3951da177e4SLinus Torvalds static int 396d61005a6SAl Viro nfs3_xdr_symlinkargs(struct rpc_rqst *req, __be32 *p, struct nfs3_symlinkargs *args) 3971da177e4SLinus Torvalds { 3981da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fromfh); 3991da177e4SLinus Torvalds p = xdr_encode_array(p, args->fromname, args->fromlen); 4001da177e4SLinus Torvalds p = xdr_encode_sattr(p, args->sattr); 40194a6d753SChuck Lever *p++ = htonl(args->pathlen); 4021da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 40394a6d753SChuck Lever 40494a6d753SChuck Lever /* Copy the page */ 40594a6d753SChuck Lever xdr_encode_pages(&req->rq_snd_buf, args->pages, 0, args->pathlen); 4061da177e4SLinus Torvalds return 0; 4071da177e4SLinus Torvalds } 4081da177e4SLinus Torvalds 4091da177e4SLinus Torvalds /* 4101da177e4SLinus Torvalds * Encode MKNOD arguments 4111da177e4SLinus Torvalds */ 4121da177e4SLinus Torvalds static int 413d61005a6SAl Viro nfs3_xdr_mknodargs(struct rpc_rqst *req, __be32 *p, struct nfs3_mknodargs *args) 4141da177e4SLinus Torvalds { 4151da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fh); 4161da177e4SLinus Torvalds p = xdr_encode_array(p, args->name, args->len); 4171da177e4SLinus Torvalds *p++ = htonl(args->type); 4181da177e4SLinus Torvalds p = xdr_encode_sattr(p, args->sattr); 4191da177e4SLinus Torvalds if (args->type == NF3CHR || args->type == NF3BLK) { 4201da177e4SLinus Torvalds *p++ = htonl(MAJOR(args->rdev)); 4211da177e4SLinus Torvalds *p++ = htonl(MINOR(args->rdev)); 4221da177e4SLinus Torvalds } 4231da177e4SLinus Torvalds 4241da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 4251da177e4SLinus Torvalds return 0; 4261da177e4SLinus Torvalds } 4271da177e4SLinus Torvalds 4281da177e4SLinus Torvalds /* 4291da177e4SLinus Torvalds * Encode RENAME arguments 4301da177e4SLinus Torvalds */ 4311da177e4SLinus Torvalds static int 432d61005a6SAl Viro nfs3_xdr_renameargs(struct rpc_rqst *req, __be32 *p, struct nfs3_renameargs *args) 4331da177e4SLinus Torvalds { 4341da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fromfh); 4351da177e4SLinus Torvalds p = xdr_encode_array(p, args->fromname, args->fromlen); 4361da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->tofh); 4371da177e4SLinus Torvalds p = xdr_encode_array(p, args->toname, args->tolen); 4381da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 4391da177e4SLinus Torvalds return 0; 4401da177e4SLinus Torvalds } 4411da177e4SLinus Torvalds 4421da177e4SLinus Torvalds /* 4431da177e4SLinus Torvalds * Encode LINK arguments 4441da177e4SLinus Torvalds */ 4451da177e4SLinus Torvalds static int 446d61005a6SAl Viro nfs3_xdr_linkargs(struct rpc_rqst *req, __be32 *p, struct nfs3_linkargs *args) 4471da177e4SLinus Torvalds { 4481da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fromfh); 4491da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->tofh); 4501da177e4SLinus Torvalds p = xdr_encode_array(p, args->toname, args->tolen); 4511da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 4521da177e4SLinus Torvalds return 0; 4531da177e4SLinus Torvalds } 4541da177e4SLinus Torvalds 4551da177e4SLinus Torvalds /* 4561da177e4SLinus Torvalds * Encode arguments to readdir call 4571da177e4SLinus Torvalds */ 4581da177e4SLinus Torvalds static int 459d61005a6SAl Viro nfs3_xdr_readdirargs(struct rpc_rqst *req, __be32 *p, struct nfs3_readdirargs *args) 4601da177e4SLinus Torvalds { 4611da177e4SLinus Torvalds struct rpc_auth *auth = req->rq_task->tk_auth; 4621da177e4SLinus Torvalds unsigned int replen; 4631da177e4SLinus Torvalds u32 count = args->count; 4641da177e4SLinus Torvalds 4651da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fh); 4661da177e4SLinus Torvalds p = xdr_encode_hyper(p, args->cookie); 4671da177e4SLinus Torvalds *p++ = args->verf[0]; 4681da177e4SLinus Torvalds *p++ = args->verf[1]; 4691da177e4SLinus Torvalds if (args->plus) { 4701da177e4SLinus Torvalds /* readdirplus: need dircount + buffer size. 4711da177e4SLinus Torvalds * We just make sure we make dircount big enough */ 4721da177e4SLinus Torvalds *p++ = htonl(count >> 3); 4731da177e4SLinus Torvalds } 4741da177e4SLinus Torvalds *p++ = htonl(count); 4751da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 4761da177e4SLinus Torvalds 4771da177e4SLinus Torvalds /* Inline the page array */ 4781da177e4SLinus Torvalds replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readdirres_sz) << 2; 4791da177e4SLinus Torvalds xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, 0, count); 4801da177e4SLinus Torvalds return 0; 4811da177e4SLinus Torvalds } 4821da177e4SLinus Torvalds 4831da177e4SLinus Torvalds /* 4841da177e4SLinus Torvalds * Decode the result of a readdir call. 4851da177e4SLinus Torvalds * We just check for syntactical correctness. 4861da177e4SLinus Torvalds */ 4871da177e4SLinus Torvalds static int 488d61005a6SAl Viro nfs3_xdr_readdirres(struct rpc_rqst *req, __be32 *p, struct nfs3_readdirres *res) 4891da177e4SLinus Torvalds { 4901da177e4SLinus Torvalds struct xdr_buf *rcvbuf = &req->rq_rcv_buf; 4911da177e4SLinus Torvalds struct kvec *iov = rcvbuf->head; 4921da177e4SLinus Torvalds struct page **page; 4931da177e4SLinus Torvalds int hdrlen, recvd; 4941da177e4SLinus Torvalds int status, nr; 4951da177e4SLinus Torvalds unsigned int len, pglen; 496d61005a6SAl Viro __be32 *entry, *end, *kaddr; 4971da177e4SLinus Torvalds 4981da177e4SLinus Torvalds status = ntohl(*p++); 4991da177e4SLinus Torvalds /* Decode post_op_attrs */ 5001da177e4SLinus Torvalds p = xdr_decode_post_op_attr(p, res->dir_attr); 5011da177e4SLinus Torvalds if (status) 5021da177e4SLinus Torvalds return -nfs_stat_to_errno(status); 5031da177e4SLinus Torvalds /* Decode verifier cookie */ 5041da177e4SLinus Torvalds if (res->verf) { 5051da177e4SLinus Torvalds res->verf[0] = *p++; 5061da177e4SLinus Torvalds res->verf[1] = *p++; 5071da177e4SLinus Torvalds } else { 5081da177e4SLinus Torvalds p += 2; 5091da177e4SLinus Torvalds } 5101da177e4SLinus Torvalds 5111da177e4SLinus Torvalds hdrlen = (u8 *) p - (u8 *) iov->iov_base; 5121da177e4SLinus Torvalds if (iov->iov_len < hdrlen) { 5131da177e4SLinus Torvalds printk(KERN_WARNING "NFS: READDIR reply header overflowed:" 5141da177e4SLinus Torvalds "length %d > %Zu\n", hdrlen, iov->iov_len); 5151da177e4SLinus Torvalds return -errno_NFSERR_IO; 5161da177e4SLinus Torvalds } else if (iov->iov_len != hdrlen) { 5171da177e4SLinus Torvalds dprintk("NFS: READDIR header is short. iovec will be shifted.\n"); 5181da177e4SLinus Torvalds xdr_shift_buf(rcvbuf, iov->iov_len - hdrlen); 5191da177e4SLinus Torvalds } 5201da177e4SLinus Torvalds 5211da177e4SLinus Torvalds pglen = rcvbuf->page_len; 5221da177e4SLinus Torvalds recvd = rcvbuf->len - hdrlen; 5231da177e4SLinus Torvalds if (pglen > recvd) 5241da177e4SLinus Torvalds pglen = recvd; 5251da177e4SLinus Torvalds page = rcvbuf->pages; 526d61005a6SAl Viro kaddr = p = kmap_atomic(*page, KM_USER0); 527d61005a6SAl Viro end = (__be32 *)((char *)p + pglen); 5281da177e4SLinus Torvalds entry = p; 5291da177e4SLinus Torvalds for (nr = 0; *p++; nr++) { 5301da177e4SLinus Torvalds if (p + 3 > end) 5311da177e4SLinus Torvalds goto short_pkt; 5321da177e4SLinus Torvalds p += 2; /* inode # */ 5331da177e4SLinus Torvalds len = ntohl(*p++); /* string length */ 5341da177e4SLinus Torvalds p += XDR_QUADLEN(len) + 2; /* name + cookie */ 5351da177e4SLinus Torvalds if (len > NFS3_MAXNAMLEN) { 5361da177e4SLinus Torvalds printk(KERN_WARNING "NFS: giant filename in readdir (len %x)!\n", 5371da177e4SLinus Torvalds len); 5381da177e4SLinus Torvalds goto err_unmap; 5391da177e4SLinus Torvalds } 5401da177e4SLinus Torvalds 5411da177e4SLinus Torvalds if (res->plus) { 5421da177e4SLinus Torvalds /* post_op_attr */ 5431da177e4SLinus Torvalds if (p + 2 > end) 5441da177e4SLinus Torvalds goto short_pkt; 5451da177e4SLinus Torvalds if (*p++) { 5461da177e4SLinus Torvalds p += 21; 5471da177e4SLinus Torvalds if (p + 1 > end) 5481da177e4SLinus Torvalds goto short_pkt; 5491da177e4SLinus Torvalds } 5501da177e4SLinus Torvalds /* post_op_fh3 */ 5511da177e4SLinus Torvalds if (*p++) { 5521da177e4SLinus Torvalds if (p + 1 > end) 5531da177e4SLinus Torvalds goto short_pkt; 5541da177e4SLinus Torvalds len = ntohl(*p++); 5551da177e4SLinus Torvalds if (len > NFS3_FHSIZE) { 5561da177e4SLinus Torvalds printk(KERN_WARNING "NFS: giant filehandle in " 5571da177e4SLinus Torvalds "readdir (len %x)!\n", len); 5581da177e4SLinus Torvalds goto err_unmap; 5591da177e4SLinus Torvalds } 5601da177e4SLinus Torvalds p += XDR_QUADLEN(len); 5611da177e4SLinus Torvalds } 5621da177e4SLinus Torvalds } 5631da177e4SLinus Torvalds 5641da177e4SLinus Torvalds if (p + 2 > end) 5651da177e4SLinus Torvalds goto short_pkt; 5661da177e4SLinus Torvalds entry = p; 5671da177e4SLinus Torvalds } 5681da177e4SLinus Torvalds if (!nr && (entry[0] != 0 || entry[1] == 0)) 5691da177e4SLinus Torvalds goto short_pkt; 5701da177e4SLinus Torvalds out: 5711da177e4SLinus Torvalds kunmap_atomic(kaddr, KM_USER0); 5721da177e4SLinus Torvalds return nr; 5731da177e4SLinus Torvalds short_pkt: 5741da177e4SLinus Torvalds entry[0] = entry[1] = 0; 5751da177e4SLinus Torvalds /* truncate listing ? */ 5761da177e4SLinus Torvalds if (!nr) { 5771da177e4SLinus Torvalds printk(KERN_NOTICE "NFS: readdir reply truncated!\n"); 5781da177e4SLinus Torvalds entry[1] = 1; 5791da177e4SLinus Torvalds } 5801da177e4SLinus Torvalds goto out; 5811da177e4SLinus Torvalds err_unmap: 5821da177e4SLinus Torvalds nr = -errno_NFSERR_IO; 5831da177e4SLinus Torvalds goto out; 5841da177e4SLinus Torvalds } 5851da177e4SLinus Torvalds 5860dbb4c67SAl Viro __be32 * 5870dbb4c67SAl Viro nfs3_decode_dirent(__be32 *p, struct nfs_entry *entry, int plus) 5881da177e4SLinus Torvalds { 5891da177e4SLinus Torvalds struct nfs_entry old = *entry; 5901da177e4SLinus Torvalds 5911da177e4SLinus Torvalds if (!*p++) { 5921da177e4SLinus Torvalds if (!*p) 5931da177e4SLinus Torvalds return ERR_PTR(-EAGAIN); 5941da177e4SLinus Torvalds entry->eof = 1; 5951da177e4SLinus Torvalds return ERR_PTR(-EBADCOOKIE); 5961da177e4SLinus Torvalds } 5971da177e4SLinus Torvalds 5981da177e4SLinus Torvalds p = xdr_decode_hyper(p, &entry->ino); 5991da177e4SLinus Torvalds entry->len = ntohl(*p++); 6001da177e4SLinus Torvalds entry->name = (const char *) p; 6011da177e4SLinus Torvalds p += XDR_QUADLEN(entry->len); 6021da177e4SLinus Torvalds entry->prev_cookie = entry->cookie; 6031da177e4SLinus Torvalds p = xdr_decode_hyper(p, &entry->cookie); 6041da177e4SLinus Torvalds 6051da177e4SLinus Torvalds if (plus) { 6061da177e4SLinus Torvalds entry->fattr->valid = 0; 6071da177e4SLinus Torvalds p = xdr_decode_post_op_attr(p, entry->fattr); 6081da177e4SLinus Torvalds /* In fact, a post_op_fh3: */ 6091da177e4SLinus Torvalds if (*p++) { 6101da177e4SLinus Torvalds p = xdr_decode_fhandle(p, entry->fh); 6111da177e4SLinus Torvalds /* Ugh -- server reply was truncated */ 6121da177e4SLinus Torvalds if (p == NULL) { 6131da177e4SLinus Torvalds dprintk("NFS: FH truncated\n"); 6141da177e4SLinus Torvalds *entry = old; 6151da177e4SLinus Torvalds return ERR_PTR(-EAGAIN); 6161da177e4SLinus Torvalds } 6171da177e4SLinus Torvalds } else 6181da177e4SLinus Torvalds memset((u8*)(entry->fh), 0, sizeof(*entry->fh)); 6191da177e4SLinus Torvalds } 6201da177e4SLinus Torvalds 6211da177e4SLinus Torvalds entry->eof = !p[0] && p[1]; 6221da177e4SLinus Torvalds return p; 6231da177e4SLinus Torvalds } 6241da177e4SLinus Torvalds 6251da177e4SLinus Torvalds /* 6261da177e4SLinus Torvalds * Encode COMMIT arguments 6271da177e4SLinus Torvalds */ 6281da177e4SLinus Torvalds static int 629d61005a6SAl Viro nfs3_xdr_commitargs(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args) 6301da177e4SLinus Torvalds { 6311da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fh); 6321da177e4SLinus Torvalds p = xdr_encode_hyper(p, args->offset); 6331da177e4SLinus Torvalds *p++ = htonl(args->count); 6341da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 6351da177e4SLinus Torvalds return 0; 6361da177e4SLinus Torvalds } 6371da177e4SLinus Torvalds 638b7fa0554SAndreas Gruenbacher #ifdef CONFIG_NFS_V3_ACL 639b7fa0554SAndreas Gruenbacher /* 640b7fa0554SAndreas Gruenbacher * Encode GETACL arguments 641b7fa0554SAndreas Gruenbacher */ 642b7fa0554SAndreas Gruenbacher static int 643d61005a6SAl Viro nfs3_xdr_getaclargs(struct rpc_rqst *req, __be32 *p, 644b7fa0554SAndreas Gruenbacher struct nfs3_getaclargs *args) 645b7fa0554SAndreas Gruenbacher { 646b7fa0554SAndreas Gruenbacher struct rpc_auth *auth = req->rq_task->tk_auth; 647b7fa0554SAndreas Gruenbacher unsigned int replen; 648b7fa0554SAndreas Gruenbacher 649b7fa0554SAndreas Gruenbacher p = xdr_encode_fhandle(p, args->fh); 650b7fa0554SAndreas Gruenbacher *p++ = htonl(args->mask); 651b7fa0554SAndreas Gruenbacher req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 652b7fa0554SAndreas Gruenbacher 653b7fa0554SAndreas Gruenbacher if (args->mask & (NFS_ACL | NFS_DFACL)) { 654b7fa0554SAndreas Gruenbacher /* Inline the page array */ 655b7fa0554SAndreas Gruenbacher replen = (RPC_REPHDRSIZE + auth->au_rslack + 656b7fa0554SAndreas Gruenbacher ACL3_getaclres_sz) << 2; 657b7fa0554SAndreas Gruenbacher xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, 0, 658b7fa0554SAndreas Gruenbacher NFSACL_MAXPAGES << PAGE_SHIFT); 659b7fa0554SAndreas Gruenbacher } 660b7fa0554SAndreas Gruenbacher return 0; 661b7fa0554SAndreas Gruenbacher } 662b7fa0554SAndreas Gruenbacher 663b7fa0554SAndreas Gruenbacher /* 664b7fa0554SAndreas Gruenbacher * Encode SETACL arguments 665b7fa0554SAndreas Gruenbacher */ 666b7fa0554SAndreas Gruenbacher static int 667d61005a6SAl Viro nfs3_xdr_setaclargs(struct rpc_rqst *req, __be32 *p, 668b7fa0554SAndreas Gruenbacher struct nfs3_setaclargs *args) 669b7fa0554SAndreas Gruenbacher { 670b7fa0554SAndreas Gruenbacher struct xdr_buf *buf = &req->rq_snd_buf; 671b7fa0554SAndreas Gruenbacher unsigned int base, len_in_head, len = nfsacl_size( 672b7fa0554SAndreas Gruenbacher (args->mask & NFS_ACL) ? args->acl_access : NULL, 673b7fa0554SAndreas Gruenbacher (args->mask & NFS_DFACL) ? args->acl_default : NULL); 674b7fa0554SAndreas Gruenbacher int count, err; 675b7fa0554SAndreas Gruenbacher 676b7fa0554SAndreas Gruenbacher p = xdr_encode_fhandle(p, NFS_FH(args->inode)); 677b7fa0554SAndreas Gruenbacher *p++ = htonl(args->mask); 678b7fa0554SAndreas Gruenbacher base = (char *)p - (char *)buf->head->iov_base; 679b7fa0554SAndreas Gruenbacher /* put as much of the acls into head as possible. */ 680b7fa0554SAndreas Gruenbacher len_in_head = min_t(unsigned int, buf->head->iov_len - base, len); 681b7fa0554SAndreas Gruenbacher len -= len_in_head; 68221348425SAndreas Gruenbacher req->rq_slen = xdr_adjust_iovec(req->rq_svec, p + (len_in_head >> 2)); 683b7fa0554SAndreas Gruenbacher 684b7fa0554SAndreas Gruenbacher for (count = 0; (count << PAGE_SHIFT) < len; count++) { 685b7fa0554SAndreas Gruenbacher args->pages[count] = alloc_page(GFP_KERNEL); 686b7fa0554SAndreas Gruenbacher if (!args->pages[count]) { 687b7fa0554SAndreas Gruenbacher while (count) 688b7fa0554SAndreas Gruenbacher __free_page(args->pages[--count]); 689b7fa0554SAndreas Gruenbacher return -ENOMEM; 690b7fa0554SAndreas Gruenbacher } 691b7fa0554SAndreas Gruenbacher } 692b7fa0554SAndreas Gruenbacher xdr_encode_pages(buf, args->pages, 0, len); 693b7fa0554SAndreas Gruenbacher 694b7fa0554SAndreas Gruenbacher err = nfsacl_encode(buf, base, args->inode, 695b7fa0554SAndreas Gruenbacher (args->mask & NFS_ACL) ? 696b7fa0554SAndreas Gruenbacher args->acl_access : NULL, 1, 0); 697b7fa0554SAndreas Gruenbacher if (err > 0) 698b7fa0554SAndreas Gruenbacher err = nfsacl_encode(buf, base + err, args->inode, 699b7fa0554SAndreas Gruenbacher (args->mask & NFS_DFACL) ? 700b7fa0554SAndreas Gruenbacher args->acl_default : NULL, 1, 701b7fa0554SAndreas Gruenbacher NFS_ACL_DEFAULT); 702b7fa0554SAndreas Gruenbacher return (err > 0) ? 0 : err; 703b7fa0554SAndreas Gruenbacher } 704b7fa0554SAndreas Gruenbacher #endif /* CONFIG_NFS_V3_ACL */ 705b7fa0554SAndreas Gruenbacher 7061da177e4SLinus Torvalds /* 7071da177e4SLinus Torvalds * NFS XDR decode functions 7081da177e4SLinus Torvalds */ 7091da177e4SLinus Torvalds 7101da177e4SLinus Torvalds /* 7111da177e4SLinus Torvalds * Decode attrstat reply. 7121da177e4SLinus Torvalds */ 7131da177e4SLinus Torvalds static int 714d61005a6SAl Viro nfs3_xdr_attrstat(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr) 7151da177e4SLinus Torvalds { 7161da177e4SLinus Torvalds int status; 7171da177e4SLinus Torvalds 7181da177e4SLinus Torvalds if ((status = ntohl(*p++))) 7191da177e4SLinus Torvalds return -nfs_stat_to_errno(status); 7201da177e4SLinus Torvalds xdr_decode_fattr(p, fattr); 7211da177e4SLinus Torvalds return 0; 7221da177e4SLinus Torvalds } 7231da177e4SLinus Torvalds 7241da177e4SLinus Torvalds /* 7251da177e4SLinus Torvalds * Decode status+wcc_data reply 7261da177e4SLinus Torvalds * SATTR, REMOVE, RMDIR 7271da177e4SLinus Torvalds */ 7281da177e4SLinus Torvalds static int 729d61005a6SAl Viro nfs3_xdr_wccstat(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr) 7301da177e4SLinus Torvalds { 7311da177e4SLinus Torvalds int status; 7321da177e4SLinus Torvalds 7331da177e4SLinus Torvalds if ((status = ntohl(*p++))) 7341da177e4SLinus Torvalds status = -nfs_stat_to_errno(status); 7351da177e4SLinus Torvalds xdr_decode_wcc_data(p, fattr); 7361da177e4SLinus Torvalds return status; 7371da177e4SLinus Torvalds } 7381da177e4SLinus Torvalds 7391da177e4SLinus Torvalds /* 7401da177e4SLinus Torvalds * Decode LOOKUP reply 7411da177e4SLinus Torvalds */ 7421da177e4SLinus Torvalds static int 743d61005a6SAl Viro nfs3_xdr_lookupres(struct rpc_rqst *req, __be32 *p, struct nfs3_diropres *res) 7441da177e4SLinus Torvalds { 7451da177e4SLinus Torvalds int status; 7461da177e4SLinus Torvalds 7471da177e4SLinus Torvalds if ((status = ntohl(*p++))) { 7481da177e4SLinus Torvalds status = -nfs_stat_to_errno(status); 7491da177e4SLinus Torvalds } else { 7501da177e4SLinus Torvalds if (!(p = xdr_decode_fhandle(p, res->fh))) 7511da177e4SLinus Torvalds return -errno_NFSERR_IO; 7521da177e4SLinus Torvalds p = xdr_decode_post_op_attr(p, res->fattr); 7531da177e4SLinus Torvalds } 7541da177e4SLinus Torvalds xdr_decode_post_op_attr(p, res->dir_attr); 7551da177e4SLinus Torvalds return status; 7561da177e4SLinus Torvalds } 7571da177e4SLinus Torvalds 7581da177e4SLinus Torvalds /* 7591da177e4SLinus Torvalds * Decode ACCESS reply 7601da177e4SLinus Torvalds */ 7611da177e4SLinus Torvalds static int 762d61005a6SAl Viro nfs3_xdr_accessres(struct rpc_rqst *req, __be32 *p, struct nfs3_accessres *res) 7631da177e4SLinus Torvalds { 7641da177e4SLinus Torvalds int status = ntohl(*p++); 7651da177e4SLinus Torvalds 7661da177e4SLinus Torvalds p = xdr_decode_post_op_attr(p, res->fattr); 7671da177e4SLinus Torvalds if (status) 7681da177e4SLinus Torvalds return -nfs_stat_to_errno(status); 7691da177e4SLinus Torvalds res->access = ntohl(*p++); 7701da177e4SLinus Torvalds return 0; 7711da177e4SLinus Torvalds } 7721da177e4SLinus Torvalds 7731da177e4SLinus Torvalds static int 774d61005a6SAl Viro nfs3_xdr_readlinkargs(struct rpc_rqst *req, __be32 *p, struct nfs3_readlinkargs *args) 7751da177e4SLinus Torvalds { 7761da177e4SLinus Torvalds struct rpc_auth *auth = req->rq_task->tk_auth; 7771da177e4SLinus Torvalds unsigned int replen; 7781da177e4SLinus Torvalds 7791da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fh); 7801da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 7811da177e4SLinus Torvalds 7821da177e4SLinus Torvalds /* Inline the page array */ 7831da177e4SLinus Torvalds replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readlinkres_sz) << 2; 7841da177e4SLinus Torvalds xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, args->pgbase, args->pglen); 7851da177e4SLinus Torvalds return 0; 7861da177e4SLinus Torvalds } 7871da177e4SLinus Torvalds 7881da177e4SLinus Torvalds /* 7891da177e4SLinus Torvalds * Decode READLINK reply 7901da177e4SLinus Torvalds */ 7911da177e4SLinus Torvalds static int 792d61005a6SAl Viro nfs3_xdr_readlinkres(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr) 7931da177e4SLinus Torvalds { 7941da177e4SLinus Torvalds struct xdr_buf *rcvbuf = &req->rq_rcv_buf; 7951da177e4SLinus Torvalds struct kvec *iov = rcvbuf->head; 7961da177e4SLinus Torvalds int hdrlen, len, recvd; 7971da177e4SLinus Torvalds char *kaddr; 7981da177e4SLinus Torvalds int status; 7991da177e4SLinus Torvalds 8001da177e4SLinus Torvalds status = ntohl(*p++); 8011da177e4SLinus Torvalds p = xdr_decode_post_op_attr(p, fattr); 8021da177e4SLinus Torvalds 8031da177e4SLinus Torvalds if (status != 0) 8041da177e4SLinus Torvalds return -nfs_stat_to_errno(status); 8051da177e4SLinus Torvalds 8061da177e4SLinus Torvalds /* Convert length of symlink */ 8071da177e4SLinus Torvalds len = ntohl(*p++); 8081da177e4SLinus Torvalds if (len >= rcvbuf->page_len || len <= 0) { 8091da177e4SLinus Torvalds dprintk(KERN_WARNING "nfs: server returned giant symlink!\n"); 8101da177e4SLinus Torvalds return -ENAMETOOLONG; 8111da177e4SLinus Torvalds } 8121da177e4SLinus Torvalds 8131da177e4SLinus Torvalds hdrlen = (u8 *) p - (u8 *) iov->iov_base; 8141da177e4SLinus Torvalds if (iov->iov_len < hdrlen) { 8151da177e4SLinus Torvalds printk(KERN_WARNING "NFS: READLINK reply header overflowed:" 8161da177e4SLinus Torvalds "length %d > %Zu\n", hdrlen, iov->iov_len); 8171da177e4SLinus Torvalds return -errno_NFSERR_IO; 8181da177e4SLinus Torvalds } else if (iov->iov_len != hdrlen) { 8191da177e4SLinus Torvalds dprintk("NFS: READLINK header is short. iovec will be shifted.\n"); 8201da177e4SLinus Torvalds xdr_shift_buf(rcvbuf, iov->iov_len - hdrlen); 8211da177e4SLinus Torvalds } 8221da177e4SLinus Torvalds recvd = req->rq_rcv_buf.len - hdrlen; 8231da177e4SLinus Torvalds if (recvd < len) { 8241da177e4SLinus Torvalds printk(KERN_WARNING "NFS: server cheating in readlink reply: " 8251da177e4SLinus Torvalds "count %u > recvd %u\n", len, recvd); 8261da177e4SLinus Torvalds return -EIO; 8271da177e4SLinus Torvalds } 8281da177e4SLinus Torvalds 8291da177e4SLinus Torvalds /* NULL terminate the string we got */ 8301da177e4SLinus Torvalds kaddr = (char*)kmap_atomic(rcvbuf->pages[0], KM_USER0); 8311da177e4SLinus Torvalds kaddr[len+rcvbuf->page_base] = '\0'; 8321da177e4SLinus Torvalds kunmap_atomic(kaddr, KM_USER0); 8331da177e4SLinus Torvalds return 0; 8341da177e4SLinus Torvalds } 8351da177e4SLinus Torvalds 8361da177e4SLinus Torvalds /* 8371da177e4SLinus Torvalds * Decode READ reply 8381da177e4SLinus Torvalds */ 8391da177e4SLinus Torvalds static int 840d61005a6SAl Viro nfs3_xdr_readres(struct rpc_rqst *req, __be32 *p, struct nfs_readres *res) 8411da177e4SLinus Torvalds { 8421da177e4SLinus Torvalds struct kvec *iov = req->rq_rcv_buf.head; 8431da177e4SLinus Torvalds int status, count, ocount, recvd, hdrlen; 8441da177e4SLinus Torvalds 8451da177e4SLinus Torvalds status = ntohl(*p++); 8461da177e4SLinus Torvalds p = xdr_decode_post_op_attr(p, res->fattr); 8471da177e4SLinus Torvalds 8481da177e4SLinus Torvalds if (status != 0) 8491da177e4SLinus Torvalds return -nfs_stat_to_errno(status); 8501da177e4SLinus Torvalds 8511da177e4SLinus Torvalds /* Decode reply could and EOF flag. NFSv3 is somewhat redundant 8521da177e4SLinus Torvalds * in that it puts the count both in the res struct and in the 8531da177e4SLinus Torvalds * opaque data count. */ 8541da177e4SLinus Torvalds count = ntohl(*p++); 8551da177e4SLinus Torvalds res->eof = ntohl(*p++); 8561da177e4SLinus Torvalds ocount = ntohl(*p++); 8571da177e4SLinus Torvalds 8581da177e4SLinus Torvalds if (ocount != count) { 8591da177e4SLinus Torvalds printk(KERN_WARNING "NFS: READ count doesn't match RPC opaque count.\n"); 8601da177e4SLinus Torvalds return -errno_NFSERR_IO; 8611da177e4SLinus Torvalds } 8621da177e4SLinus Torvalds 8631da177e4SLinus Torvalds hdrlen = (u8 *) p - (u8 *) iov->iov_base; 8641da177e4SLinus Torvalds if (iov->iov_len < hdrlen) { 8651da177e4SLinus Torvalds printk(KERN_WARNING "NFS: READ reply header overflowed:" 8661da177e4SLinus Torvalds "length %d > %Zu\n", hdrlen, iov->iov_len); 8671da177e4SLinus Torvalds return -errno_NFSERR_IO; 8681da177e4SLinus Torvalds } else if (iov->iov_len != hdrlen) { 8691da177e4SLinus Torvalds dprintk("NFS: READ header is short. iovec will be shifted.\n"); 8701da177e4SLinus Torvalds xdr_shift_buf(&req->rq_rcv_buf, iov->iov_len - hdrlen); 8711da177e4SLinus Torvalds } 8721da177e4SLinus Torvalds 8731da177e4SLinus Torvalds recvd = req->rq_rcv_buf.len - hdrlen; 8741da177e4SLinus Torvalds if (count > recvd) { 8751da177e4SLinus Torvalds printk(KERN_WARNING "NFS: server cheating in read reply: " 8761da177e4SLinus Torvalds "count %d > recvd %d\n", count, recvd); 8771da177e4SLinus Torvalds count = recvd; 8781da177e4SLinus Torvalds res->eof = 0; 8791da177e4SLinus Torvalds } 8801da177e4SLinus Torvalds 8811da177e4SLinus Torvalds if (count < res->count) 8821da177e4SLinus Torvalds res->count = count; 8831da177e4SLinus Torvalds 8841da177e4SLinus Torvalds return count; 8851da177e4SLinus Torvalds } 8861da177e4SLinus Torvalds 8871da177e4SLinus Torvalds /* 8881da177e4SLinus Torvalds * Decode WRITE response 8891da177e4SLinus Torvalds */ 8901da177e4SLinus Torvalds static int 891d61005a6SAl Viro nfs3_xdr_writeres(struct rpc_rqst *req, __be32 *p, struct nfs_writeres *res) 8921da177e4SLinus Torvalds { 8931da177e4SLinus Torvalds int status; 8941da177e4SLinus Torvalds 8951da177e4SLinus Torvalds status = ntohl(*p++); 8961da177e4SLinus Torvalds p = xdr_decode_wcc_data(p, res->fattr); 8971da177e4SLinus Torvalds 8981da177e4SLinus Torvalds if (status != 0) 8991da177e4SLinus Torvalds return -nfs_stat_to_errno(status); 9001da177e4SLinus Torvalds 9011da177e4SLinus Torvalds res->count = ntohl(*p++); 9021da177e4SLinus Torvalds res->verf->committed = (enum nfs3_stable_how)ntohl(*p++); 9031da177e4SLinus Torvalds res->verf->verifier[0] = *p++; 9041da177e4SLinus Torvalds res->verf->verifier[1] = *p++; 9051da177e4SLinus Torvalds 9061da177e4SLinus Torvalds return res->count; 9071da177e4SLinus Torvalds } 9081da177e4SLinus Torvalds 9091da177e4SLinus Torvalds /* 9101da177e4SLinus Torvalds * Decode a CREATE response 9111da177e4SLinus Torvalds */ 9121da177e4SLinus Torvalds static int 913d61005a6SAl Viro nfs3_xdr_createres(struct rpc_rqst *req, __be32 *p, struct nfs3_diropres *res) 9141da177e4SLinus Torvalds { 9151da177e4SLinus Torvalds int status; 9161da177e4SLinus Torvalds 9171da177e4SLinus Torvalds status = ntohl(*p++); 9181da177e4SLinus Torvalds if (status == 0) { 9191da177e4SLinus Torvalds if (*p++) { 9201da177e4SLinus Torvalds if (!(p = xdr_decode_fhandle(p, res->fh))) 9211da177e4SLinus Torvalds return -errno_NFSERR_IO; 9221da177e4SLinus Torvalds p = xdr_decode_post_op_attr(p, res->fattr); 9231da177e4SLinus Torvalds } else { 9241da177e4SLinus Torvalds memset(res->fh, 0, sizeof(*res->fh)); 9251da177e4SLinus Torvalds /* Do decode post_op_attr but set it to NULL */ 9261da177e4SLinus Torvalds p = xdr_decode_post_op_attr(p, res->fattr); 9271da177e4SLinus Torvalds res->fattr->valid = 0; 9281da177e4SLinus Torvalds } 9291da177e4SLinus Torvalds } else { 9301da177e4SLinus Torvalds status = -nfs_stat_to_errno(status); 9311da177e4SLinus Torvalds } 9321da177e4SLinus Torvalds p = xdr_decode_wcc_data(p, res->dir_attr); 9331da177e4SLinus Torvalds return status; 9341da177e4SLinus Torvalds } 9351da177e4SLinus Torvalds 9361da177e4SLinus Torvalds /* 9371da177e4SLinus Torvalds * Decode RENAME reply 9381da177e4SLinus Torvalds */ 9391da177e4SLinus Torvalds static int 940d61005a6SAl Viro nfs3_xdr_renameres(struct rpc_rqst *req, __be32 *p, struct nfs3_renameres *res) 9411da177e4SLinus Torvalds { 9421da177e4SLinus Torvalds int status; 9431da177e4SLinus Torvalds 9441da177e4SLinus Torvalds if ((status = ntohl(*p++)) != 0) 9451da177e4SLinus Torvalds status = -nfs_stat_to_errno(status); 9461da177e4SLinus Torvalds p = xdr_decode_wcc_data(p, res->fromattr); 9471da177e4SLinus Torvalds p = xdr_decode_wcc_data(p, res->toattr); 9481da177e4SLinus Torvalds return status; 9491da177e4SLinus Torvalds } 9501da177e4SLinus Torvalds 9511da177e4SLinus Torvalds /* 9521da177e4SLinus Torvalds * Decode LINK reply 9531da177e4SLinus Torvalds */ 9541da177e4SLinus Torvalds static int 955d61005a6SAl Viro nfs3_xdr_linkres(struct rpc_rqst *req, __be32 *p, struct nfs3_linkres *res) 9561da177e4SLinus Torvalds { 9571da177e4SLinus Torvalds int status; 9581da177e4SLinus Torvalds 9591da177e4SLinus Torvalds if ((status = ntohl(*p++)) != 0) 9601da177e4SLinus Torvalds status = -nfs_stat_to_errno(status); 9611da177e4SLinus Torvalds p = xdr_decode_post_op_attr(p, res->fattr); 9621da177e4SLinus Torvalds p = xdr_decode_wcc_data(p, res->dir_attr); 9631da177e4SLinus Torvalds return status; 9641da177e4SLinus Torvalds } 9651da177e4SLinus Torvalds 9661da177e4SLinus Torvalds /* 9671da177e4SLinus Torvalds * Decode FSSTAT reply 9681da177e4SLinus Torvalds */ 9691da177e4SLinus Torvalds static int 970d61005a6SAl Viro nfs3_xdr_fsstatres(struct rpc_rqst *req, __be32 *p, struct nfs_fsstat *res) 9711da177e4SLinus Torvalds { 9721da177e4SLinus Torvalds int status; 9731da177e4SLinus Torvalds 9741da177e4SLinus Torvalds status = ntohl(*p++); 9751da177e4SLinus Torvalds 9761da177e4SLinus Torvalds p = xdr_decode_post_op_attr(p, res->fattr); 9771da177e4SLinus Torvalds if (status != 0) 9781da177e4SLinus Torvalds return -nfs_stat_to_errno(status); 9791da177e4SLinus Torvalds 9801da177e4SLinus Torvalds p = xdr_decode_hyper(p, &res->tbytes); 9811da177e4SLinus Torvalds p = xdr_decode_hyper(p, &res->fbytes); 9821da177e4SLinus Torvalds p = xdr_decode_hyper(p, &res->abytes); 9831da177e4SLinus Torvalds p = xdr_decode_hyper(p, &res->tfiles); 9841da177e4SLinus Torvalds p = xdr_decode_hyper(p, &res->ffiles); 9851da177e4SLinus Torvalds p = xdr_decode_hyper(p, &res->afiles); 9861da177e4SLinus Torvalds 9871da177e4SLinus Torvalds /* ignore invarsec */ 9881da177e4SLinus Torvalds return 0; 9891da177e4SLinus Torvalds } 9901da177e4SLinus Torvalds 9911da177e4SLinus Torvalds /* 9921da177e4SLinus Torvalds * Decode FSINFO reply 9931da177e4SLinus Torvalds */ 9941da177e4SLinus Torvalds static int 995d61005a6SAl Viro nfs3_xdr_fsinfores(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *res) 9961da177e4SLinus Torvalds { 9971da177e4SLinus Torvalds int status; 9981da177e4SLinus Torvalds 9991da177e4SLinus Torvalds status = ntohl(*p++); 10001da177e4SLinus Torvalds 10011da177e4SLinus Torvalds p = xdr_decode_post_op_attr(p, res->fattr); 10021da177e4SLinus Torvalds if (status != 0) 10031da177e4SLinus Torvalds return -nfs_stat_to_errno(status); 10041da177e4SLinus Torvalds 10051da177e4SLinus Torvalds res->rtmax = ntohl(*p++); 10061da177e4SLinus Torvalds res->rtpref = ntohl(*p++); 10071da177e4SLinus Torvalds res->rtmult = ntohl(*p++); 10081da177e4SLinus Torvalds res->wtmax = ntohl(*p++); 10091da177e4SLinus Torvalds res->wtpref = ntohl(*p++); 10101da177e4SLinus Torvalds res->wtmult = ntohl(*p++); 10111da177e4SLinus Torvalds res->dtpref = ntohl(*p++); 10121da177e4SLinus Torvalds p = xdr_decode_hyper(p, &res->maxfilesize); 10131da177e4SLinus Torvalds 10141da177e4SLinus Torvalds /* ignore time_delta and properties */ 10151da177e4SLinus Torvalds res->lease_time = 0; 10161da177e4SLinus Torvalds return 0; 10171da177e4SLinus Torvalds } 10181da177e4SLinus Torvalds 10191da177e4SLinus Torvalds /* 10201da177e4SLinus Torvalds * Decode PATHCONF reply 10211da177e4SLinus Torvalds */ 10221da177e4SLinus Torvalds static int 1023d61005a6SAl Viro nfs3_xdr_pathconfres(struct rpc_rqst *req, __be32 *p, struct nfs_pathconf *res) 10241da177e4SLinus Torvalds { 10251da177e4SLinus Torvalds int status; 10261da177e4SLinus Torvalds 10271da177e4SLinus Torvalds status = ntohl(*p++); 10281da177e4SLinus Torvalds 10291da177e4SLinus Torvalds p = xdr_decode_post_op_attr(p, res->fattr); 10301da177e4SLinus Torvalds if (status != 0) 10311da177e4SLinus Torvalds return -nfs_stat_to_errno(status); 10321da177e4SLinus Torvalds res->max_link = ntohl(*p++); 10331da177e4SLinus Torvalds res->max_namelen = ntohl(*p++); 10341da177e4SLinus Torvalds 10351da177e4SLinus Torvalds /* ignore remaining fields */ 10361da177e4SLinus Torvalds return 0; 10371da177e4SLinus Torvalds } 10381da177e4SLinus Torvalds 10391da177e4SLinus Torvalds /* 10401da177e4SLinus Torvalds * Decode COMMIT reply 10411da177e4SLinus Torvalds */ 10421da177e4SLinus Torvalds static int 1043d61005a6SAl Viro nfs3_xdr_commitres(struct rpc_rqst *req, __be32 *p, struct nfs_writeres *res) 10441da177e4SLinus Torvalds { 10451da177e4SLinus Torvalds int status; 10461da177e4SLinus Torvalds 10471da177e4SLinus Torvalds status = ntohl(*p++); 10481da177e4SLinus Torvalds p = xdr_decode_wcc_data(p, res->fattr); 10491da177e4SLinus Torvalds if (status != 0) 10501da177e4SLinus Torvalds return -nfs_stat_to_errno(status); 10511da177e4SLinus Torvalds 10521da177e4SLinus Torvalds res->verf->verifier[0] = *p++; 10531da177e4SLinus Torvalds res->verf->verifier[1] = *p++; 10541da177e4SLinus Torvalds return 0; 10551da177e4SLinus Torvalds } 10561da177e4SLinus Torvalds 1057b7fa0554SAndreas Gruenbacher #ifdef CONFIG_NFS_V3_ACL 1058b7fa0554SAndreas Gruenbacher /* 1059b7fa0554SAndreas Gruenbacher * Decode GETACL reply 1060b7fa0554SAndreas Gruenbacher */ 1061b7fa0554SAndreas Gruenbacher static int 1062d61005a6SAl Viro nfs3_xdr_getaclres(struct rpc_rqst *req, __be32 *p, 1063b7fa0554SAndreas Gruenbacher struct nfs3_getaclres *res) 1064b7fa0554SAndreas Gruenbacher { 1065b7fa0554SAndreas Gruenbacher struct xdr_buf *buf = &req->rq_rcv_buf; 1066b7fa0554SAndreas Gruenbacher int status = ntohl(*p++); 1067b7fa0554SAndreas Gruenbacher struct posix_acl **acl; 1068b7fa0554SAndreas Gruenbacher unsigned int *aclcnt; 1069b7fa0554SAndreas Gruenbacher int err, base; 1070b7fa0554SAndreas Gruenbacher 1071b7fa0554SAndreas Gruenbacher if (status != 0) 1072b7fa0554SAndreas Gruenbacher return -nfs_stat_to_errno(status); 1073b7fa0554SAndreas Gruenbacher p = xdr_decode_post_op_attr(p, res->fattr); 1074b7fa0554SAndreas Gruenbacher res->mask = ntohl(*p++); 1075b7fa0554SAndreas Gruenbacher if (res->mask & ~(NFS_ACL|NFS_ACLCNT|NFS_DFACL|NFS_DFACLCNT)) 1076b7fa0554SAndreas Gruenbacher return -EINVAL; 1077b7fa0554SAndreas Gruenbacher base = (char *)p - (char *)req->rq_rcv_buf.head->iov_base; 1078b7fa0554SAndreas Gruenbacher 1079b7fa0554SAndreas Gruenbacher acl = (res->mask & NFS_ACL) ? &res->acl_access : NULL; 1080b7fa0554SAndreas Gruenbacher aclcnt = (res->mask & NFS_ACLCNT) ? &res->acl_access_count : NULL; 1081b7fa0554SAndreas Gruenbacher err = nfsacl_decode(buf, base, aclcnt, acl); 1082b7fa0554SAndreas Gruenbacher 1083b7fa0554SAndreas Gruenbacher acl = (res->mask & NFS_DFACL) ? &res->acl_default : NULL; 1084b7fa0554SAndreas Gruenbacher aclcnt = (res->mask & NFS_DFACLCNT) ? &res->acl_default_count : NULL; 1085b7fa0554SAndreas Gruenbacher if (err > 0) 1086b7fa0554SAndreas Gruenbacher err = nfsacl_decode(buf, base + err, aclcnt, acl); 1087b7fa0554SAndreas Gruenbacher return (err > 0) ? 0 : err; 1088b7fa0554SAndreas Gruenbacher } 1089b7fa0554SAndreas Gruenbacher 1090b7fa0554SAndreas Gruenbacher /* 1091b7fa0554SAndreas Gruenbacher * Decode setacl reply. 1092b7fa0554SAndreas Gruenbacher */ 1093b7fa0554SAndreas Gruenbacher static int 1094d61005a6SAl Viro nfs3_xdr_setaclres(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr) 1095b7fa0554SAndreas Gruenbacher { 1096b7fa0554SAndreas Gruenbacher int status = ntohl(*p++); 1097b7fa0554SAndreas Gruenbacher 1098b7fa0554SAndreas Gruenbacher if (status) 1099b7fa0554SAndreas Gruenbacher return -nfs_stat_to_errno(status); 1100b7fa0554SAndreas Gruenbacher xdr_decode_post_op_attr(p, fattr); 1101b7fa0554SAndreas Gruenbacher return 0; 1102b7fa0554SAndreas Gruenbacher } 1103b7fa0554SAndreas Gruenbacher #endif /* CONFIG_NFS_V3_ACL */ 1104b7fa0554SAndreas Gruenbacher 11051da177e4SLinus Torvalds #define PROC(proc, argtype, restype, timer) \ 11061da177e4SLinus Torvalds [NFS3PROC_##proc] = { \ 11071da177e4SLinus Torvalds .p_proc = NFS3PROC_##proc, \ 11081da177e4SLinus Torvalds .p_encode = (kxdrproc_t) nfs3_xdr_##argtype, \ 11091da177e4SLinus Torvalds .p_decode = (kxdrproc_t) nfs3_xdr_##restype, \ 11102bea90d4SChuck Lever .p_arglen = NFS3_##argtype##_sz, \ 11112bea90d4SChuck Lever .p_replen = NFS3_##restype##_sz, \ 1112cc0175c1SChuck Lever .p_timer = timer, \ 1113cc0175c1SChuck Lever .p_statidx = NFS3PROC_##proc, \ 1114cc0175c1SChuck Lever .p_name = #proc, \ 11151da177e4SLinus Torvalds } 11161da177e4SLinus Torvalds 11171da177e4SLinus Torvalds struct rpc_procinfo nfs3_procedures[] = { 11181da177e4SLinus Torvalds PROC(GETATTR, fhandle, attrstat, 1), 11191da177e4SLinus Torvalds PROC(SETATTR, sattrargs, wccstat, 0), 11201da177e4SLinus Torvalds PROC(LOOKUP, diropargs, lookupres, 2), 11211da177e4SLinus Torvalds PROC(ACCESS, accessargs, accessres, 1), 11221da177e4SLinus Torvalds PROC(READLINK, readlinkargs, readlinkres, 3), 11231da177e4SLinus Torvalds PROC(READ, readargs, readres, 3), 11241da177e4SLinus Torvalds PROC(WRITE, writeargs, writeres, 4), 11251da177e4SLinus Torvalds PROC(CREATE, createargs, createres, 0), 11261da177e4SLinus Torvalds PROC(MKDIR, mkdirargs, createres, 0), 11271da177e4SLinus Torvalds PROC(SYMLINK, symlinkargs, createres, 0), 11281da177e4SLinus Torvalds PROC(MKNOD, mknodargs, createres, 0), 11291da177e4SLinus Torvalds PROC(REMOVE, diropargs, wccstat, 0), 11301da177e4SLinus Torvalds PROC(RMDIR, diropargs, wccstat, 0), 11311da177e4SLinus Torvalds PROC(RENAME, renameargs, renameres, 0), 11321da177e4SLinus Torvalds PROC(LINK, linkargs, linkres, 0), 11331da177e4SLinus Torvalds PROC(READDIR, readdirargs, readdirres, 3), 11341da177e4SLinus Torvalds PROC(READDIRPLUS, readdirargs, readdirres, 3), 11351da177e4SLinus Torvalds PROC(FSSTAT, fhandle, fsstatres, 0), 11361da177e4SLinus Torvalds PROC(FSINFO, fhandle, fsinfores, 0), 11371da177e4SLinus Torvalds PROC(PATHCONF, fhandle, pathconfres, 0), 11381da177e4SLinus Torvalds PROC(COMMIT, commitargs, commitres, 5), 11391da177e4SLinus Torvalds }; 11401da177e4SLinus Torvalds 11411da177e4SLinus Torvalds struct rpc_version nfs_version3 = { 11421da177e4SLinus Torvalds .number = 3, 1143e8c96f8cSTobias Klauser .nrprocs = ARRAY_SIZE(nfs3_procedures), 11441da177e4SLinus Torvalds .procs = nfs3_procedures 11451da177e4SLinus Torvalds }; 11461da177e4SLinus Torvalds 1147b7fa0554SAndreas Gruenbacher #ifdef CONFIG_NFS_V3_ACL 1148b7fa0554SAndreas Gruenbacher static struct rpc_procinfo nfs3_acl_procedures[] = { 1149b7fa0554SAndreas Gruenbacher [ACLPROC3_GETACL] = { 1150b7fa0554SAndreas Gruenbacher .p_proc = ACLPROC3_GETACL, 1151b7fa0554SAndreas Gruenbacher .p_encode = (kxdrproc_t) nfs3_xdr_getaclargs, 1152b7fa0554SAndreas Gruenbacher .p_decode = (kxdrproc_t) nfs3_xdr_getaclres, 11532bea90d4SChuck Lever .p_arglen = ACL3_getaclargs_sz, 11542bea90d4SChuck Lever .p_replen = ACL3_getaclres_sz, 1155b7fa0554SAndreas Gruenbacher .p_timer = 1, 1156cc0175c1SChuck Lever .p_name = "GETACL", 1157b7fa0554SAndreas Gruenbacher }, 1158b7fa0554SAndreas Gruenbacher [ACLPROC3_SETACL] = { 1159b7fa0554SAndreas Gruenbacher .p_proc = ACLPROC3_SETACL, 1160b7fa0554SAndreas Gruenbacher .p_encode = (kxdrproc_t) nfs3_xdr_setaclargs, 1161b7fa0554SAndreas Gruenbacher .p_decode = (kxdrproc_t) nfs3_xdr_setaclres, 11622bea90d4SChuck Lever .p_arglen = ACL3_setaclargs_sz, 11632bea90d4SChuck Lever .p_replen = ACL3_setaclres_sz, 1164b7fa0554SAndreas Gruenbacher .p_timer = 0, 1165cc0175c1SChuck Lever .p_name = "SETACL", 1166b7fa0554SAndreas Gruenbacher }, 1167b7fa0554SAndreas Gruenbacher }; 1168b7fa0554SAndreas Gruenbacher 1169b7fa0554SAndreas Gruenbacher struct rpc_version nfsacl_version3 = { 1170b7fa0554SAndreas Gruenbacher .number = 3, 1171b7fa0554SAndreas Gruenbacher .nrprocs = sizeof(nfs3_acl_procedures)/ 1172b7fa0554SAndreas Gruenbacher sizeof(nfs3_acl_procedures[0]), 1173b7fa0554SAndreas Gruenbacher .procs = nfs3_acl_procedures, 1174b7fa0554SAndreas Gruenbacher }; 1175b7fa0554SAndreas Gruenbacher #endif /* CONFIG_NFS_V3_ACL */ 1176