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> 251da177e4SLinus Torvalds 261da177e4SLinus Torvalds #define NFSDBG_FACILITY NFSDBG_XDR 271da177e4SLinus Torvalds 281da177e4SLinus Torvalds /* Mapping from NFS error code to "errno" error code. */ 291da177e4SLinus Torvalds #define errno_NFSERR_IO EIO 301da177e4SLinus Torvalds 311da177e4SLinus Torvalds extern int nfs_stat_to_errno(int); 321da177e4SLinus Torvalds 331da177e4SLinus Torvalds /* 341da177e4SLinus Torvalds * Declare the space requirements for NFS arguments and replies as 351da177e4SLinus Torvalds * number of 32bit-words 361da177e4SLinus Torvalds */ 371da177e4SLinus Torvalds #define NFS3_fhandle_sz (1+16) 381da177e4SLinus Torvalds #define NFS3_fh_sz (NFS3_fhandle_sz) /* shorthand */ 391da177e4SLinus Torvalds #define NFS3_sattr_sz (15) 401da177e4SLinus Torvalds #define NFS3_filename_sz (1+(NFS3_MAXNAMLEN>>2)) 411da177e4SLinus Torvalds #define NFS3_path_sz (1+(NFS3_MAXPATHLEN>>2)) 421da177e4SLinus Torvalds #define NFS3_fattr_sz (21) 431da177e4SLinus Torvalds #define NFS3_wcc_attr_sz (6) 441da177e4SLinus Torvalds #define NFS3_pre_op_attr_sz (1+NFS3_wcc_attr_sz) 451da177e4SLinus Torvalds #define NFS3_post_op_attr_sz (1+NFS3_fattr_sz) 461da177e4SLinus Torvalds #define NFS3_wcc_data_sz (NFS3_pre_op_attr_sz+NFS3_post_op_attr_sz) 471da177e4SLinus Torvalds #define NFS3_fsstat_sz 481da177e4SLinus Torvalds #define NFS3_fsinfo_sz 491da177e4SLinus Torvalds #define NFS3_pathconf_sz 501da177e4SLinus Torvalds #define NFS3_entry_sz (NFS3_filename_sz+3) 511da177e4SLinus Torvalds 521da177e4SLinus Torvalds #define NFS3_sattrargs_sz (NFS3_fh_sz+NFS3_sattr_sz+3) 531da177e4SLinus Torvalds #define NFS3_diropargs_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) 601da177e4SLinus Torvalds #define NFS3_symlinkargs_sz (NFS3_diropargs_sz+NFS3_path_sz+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) 691da177e4SLinus Torvalds #define NFS3_lookupres_sz (1+NFS3_fh_sz+(2 * NFS3_post_op_attr_sz)) 701da177e4SLinus Torvalds #define NFS3_accessres_sz (1+NFS3_post_op_attr_sz+1) 711da177e4SLinus Torvalds #define NFS3_readlinkres_sz (1+NFS3_post_op_attr_sz+1) 721da177e4SLinus Torvalds #define NFS3_readres_sz (1+NFS3_post_op_attr_sz+3) 731da177e4SLinus Torvalds #define NFS3_writeres_sz (1+NFS3_wcc_data_sz+4) 741da177e4SLinus Torvalds #define NFS3_createres_sz (1+NFS3_fh_sz+NFS3_post_op_attr_sz+NFS3_wcc_data_sz) 751da177e4SLinus Torvalds #define NFS3_renameres_sz (1+(2 * NFS3_wcc_data_sz)) 761da177e4SLinus Torvalds #define NFS3_linkres_sz (1+NFS3_post_op_attr_sz+NFS3_wcc_data_sz) 771da177e4SLinus Torvalds #define NFS3_readdirres_sz (1+NFS3_post_op_attr_sz+2) 781da177e4SLinus Torvalds #define NFS3_fsstatres_sz (1+NFS3_post_op_attr_sz+13) 791da177e4SLinus Torvalds #define NFS3_fsinfores_sz (1+NFS3_post_op_attr_sz+12) 801da177e4SLinus Torvalds #define NFS3_pathconfres_sz (1+NFS3_post_op_attr_sz+6) 811da177e4SLinus Torvalds #define NFS3_commitres_sz (1+NFS3_wcc_data_sz+2) 821da177e4SLinus Torvalds 83b7fa0554SAndreas Gruenbacher #define ACL3_getaclargs_sz (NFS3_fh_sz+1) 84b7fa0554SAndreas Gruenbacher #define ACL3_setaclargs_sz (NFS3_fh_sz+1+2*(2+5*3)) 85b7fa0554SAndreas Gruenbacher #define ACL3_getaclres_sz (1+NFS3_post_op_attr_sz+1+2*(2+5*3)) 86b7fa0554SAndreas Gruenbacher #define ACL3_setaclres_sz (1+NFS3_post_op_attr_sz) 87b7fa0554SAndreas Gruenbacher 881da177e4SLinus Torvalds /* 891da177e4SLinus Torvalds * Map file type to S_IFMT bits 901da177e4SLinus Torvalds */ 911da177e4SLinus Torvalds static struct { 921da177e4SLinus Torvalds unsigned int mode; 931da177e4SLinus Torvalds unsigned int nfs2type; 941da177e4SLinus Torvalds } nfs_type2fmt[] = { 951da177e4SLinus Torvalds { 0, NFNON }, 961da177e4SLinus Torvalds { S_IFREG, NFREG }, 971da177e4SLinus Torvalds { S_IFDIR, NFDIR }, 981da177e4SLinus Torvalds { S_IFBLK, NFBLK }, 991da177e4SLinus Torvalds { S_IFCHR, NFCHR }, 1001da177e4SLinus Torvalds { S_IFLNK, NFLNK }, 1011da177e4SLinus Torvalds { S_IFSOCK, NFSOCK }, 1021da177e4SLinus Torvalds { S_IFIFO, NFFIFO }, 1031da177e4SLinus Torvalds { 0, NFBAD } 1041da177e4SLinus Torvalds }; 1051da177e4SLinus Torvalds 1061da177e4SLinus Torvalds /* 1071da177e4SLinus Torvalds * Common NFS XDR functions as inlines 1081da177e4SLinus Torvalds */ 1091da177e4SLinus Torvalds static inline u32 * 1101da177e4SLinus Torvalds xdr_encode_fhandle(u32 *p, struct nfs_fh *fh) 1111da177e4SLinus Torvalds { 1121da177e4SLinus Torvalds return xdr_encode_array(p, fh->data, fh->size); 1131da177e4SLinus Torvalds } 1141da177e4SLinus Torvalds 1151da177e4SLinus Torvalds static inline u32 * 1161da177e4SLinus Torvalds xdr_decode_fhandle(u32 *p, struct nfs_fh *fh) 1171da177e4SLinus Torvalds { 1181da177e4SLinus Torvalds if ((fh->size = ntohl(*p++)) <= NFS3_FHSIZE) { 1191da177e4SLinus Torvalds memcpy(fh->data, p, fh->size); 1201da177e4SLinus Torvalds return p + XDR_QUADLEN(fh->size); 1211da177e4SLinus Torvalds } 1221da177e4SLinus Torvalds return NULL; 1231da177e4SLinus Torvalds } 1241da177e4SLinus Torvalds 1251da177e4SLinus Torvalds /* 1261da177e4SLinus Torvalds * Encode/decode time. 1271da177e4SLinus Torvalds */ 1281da177e4SLinus Torvalds static inline u32 * 1291da177e4SLinus Torvalds xdr_encode_time3(u32 *p, struct timespec *timep) 1301da177e4SLinus Torvalds { 1311da177e4SLinus Torvalds *p++ = htonl(timep->tv_sec); 1321da177e4SLinus Torvalds *p++ = htonl(timep->tv_nsec); 1331da177e4SLinus Torvalds return p; 1341da177e4SLinus Torvalds } 1351da177e4SLinus Torvalds 1361da177e4SLinus Torvalds static inline u32 * 1371da177e4SLinus Torvalds xdr_decode_time3(u32 *p, struct timespec *timep) 1381da177e4SLinus Torvalds { 1391da177e4SLinus Torvalds timep->tv_sec = ntohl(*p++); 1401da177e4SLinus Torvalds timep->tv_nsec = ntohl(*p++); 1411da177e4SLinus Torvalds return p; 1421da177e4SLinus Torvalds } 1431da177e4SLinus Torvalds 1441da177e4SLinus Torvalds static u32 * 1451da177e4SLinus Torvalds xdr_decode_fattr(u32 *p, struct nfs_fattr *fattr) 1461da177e4SLinus Torvalds { 1471da177e4SLinus Torvalds unsigned int type, major, minor; 1481da177e4SLinus Torvalds int fmode; 1491da177e4SLinus Torvalds 1501da177e4SLinus Torvalds type = ntohl(*p++); 1511da177e4SLinus Torvalds if (type >= NF3BAD) 1521da177e4SLinus Torvalds type = NF3BAD; 1531da177e4SLinus Torvalds fmode = nfs_type2fmt[type].mode; 1541da177e4SLinus Torvalds fattr->type = nfs_type2fmt[type].nfs2type; 1551da177e4SLinus Torvalds fattr->mode = (ntohl(*p++) & ~S_IFMT) | fmode; 1561da177e4SLinus Torvalds fattr->nlink = ntohl(*p++); 1571da177e4SLinus Torvalds fattr->uid = ntohl(*p++); 1581da177e4SLinus Torvalds fattr->gid = ntohl(*p++); 1591da177e4SLinus Torvalds p = xdr_decode_hyper(p, &fattr->size); 1601da177e4SLinus Torvalds p = xdr_decode_hyper(p, &fattr->du.nfs3.used); 1611da177e4SLinus Torvalds 1621da177e4SLinus Torvalds /* Turn remote device info into Linux-specific dev_t */ 1631da177e4SLinus Torvalds major = ntohl(*p++); 1641da177e4SLinus Torvalds minor = ntohl(*p++); 1651da177e4SLinus Torvalds fattr->rdev = MKDEV(major, minor); 1661da177e4SLinus Torvalds if (MAJOR(fattr->rdev) != major || MINOR(fattr->rdev) != minor) 1671da177e4SLinus Torvalds fattr->rdev = 0; 1681da177e4SLinus Torvalds 1691da177e4SLinus Torvalds p = xdr_decode_hyper(p, &fattr->fsid_u.nfs3); 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 fattr->timestamp = jiffies; 1781da177e4SLinus Torvalds return p; 1791da177e4SLinus Torvalds } 1801da177e4SLinus Torvalds 1811da177e4SLinus Torvalds static inline u32 * 1821da177e4SLinus Torvalds xdr_encode_sattr(u32 *p, struct iattr *attr) 1831da177e4SLinus Torvalds { 1841da177e4SLinus Torvalds if (attr->ia_valid & ATTR_MODE) { 1851da177e4SLinus Torvalds *p++ = xdr_one; 1861da177e4SLinus Torvalds *p++ = htonl(attr->ia_mode); 1871da177e4SLinus Torvalds } else { 1881da177e4SLinus Torvalds *p++ = xdr_zero; 1891da177e4SLinus Torvalds } 1901da177e4SLinus Torvalds if (attr->ia_valid & ATTR_UID) { 1911da177e4SLinus Torvalds *p++ = xdr_one; 1921da177e4SLinus Torvalds *p++ = htonl(attr->ia_uid); 1931da177e4SLinus Torvalds } else { 1941da177e4SLinus Torvalds *p++ = xdr_zero; 1951da177e4SLinus Torvalds } 1961da177e4SLinus Torvalds if (attr->ia_valid & ATTR_GID) { 1971da177e4SLinus Torvalds *p++ = xdr_one; 1981da177e4SLinus Torvalds *p++ = htonl(attr->ia_gid); 1991da177e4SLinus Torvalds } else { 2001da177e4SLinus Torvalds *p++ = xdr_zero; 2011da177e4SLinus Torvalds } 2021da177e4SLinus Torvalds if (attr->ia_valid & ATTR_SIZE) { 2031da177e4SLinus Torvalds *p++ = xdr_one; 2041da177e4SLinus Torvalds p = xdr_encode_hyper(p, (__u64) attr->ia_size); 2051da177e4SLinus Torvalds } else { 2061da177e4SLinus Torvalds *p++ = xdr_zero; 2071da177e4SLinus Torvalds } 2081da177e4SLinus Torvalds if (attr->ia_valid & ATTR_ATIME_SET) { 2091da177e4SLinus Torvalds *p++ = xdr_two; 2101da177e4SLinus Torvalds p = xdr_encode_time3(p, &attr->ia_atime); 2111da177e4SLinus Torvalds } else if (attr->ia_valid & ATTR_ATIME) { 2121da177e4SLinus Torvalds *p++ = xdr_one; 2131da177e4SLinus Torvalds } else { 2141da177e4SLinus Torvalds *p++ = xdr_zero; 2151da177e4SLinus Torvalds } 2161da177e4SLinus Torvalds if (attr->ia_valid & ATTR_MTIME_SET) { 2171da177e4SLinus Torvalds *p++ = xdr_two; 2181da177e4SLinus Torvalds p = xdr_encode_time3(p, &attr->ia_mtime); 2191da177e4SLinus Torvalds } else if (attr->ia_valid & ATTR_MTIME) { 2201da177e4SLinus Torvalds *p++ = xdr_one; 2211da177e4SLinus Torvalds } else { 2221da177e4SLinus Torvalds *p++ = xdr_zero; 2231da177e4SLinus Torvalds } 2241da177e4SLinus Torvalds return p; 2251da177e4SLinus Torvalds } 2261da177e4SLinus Torvalds 2271da177e4SLinus Torvalds static inline u32 * 2281da177e4SLinus Torvalds xdr_decode_wcc_attr(u32 *p, struct nfs_fattr *fattr) 2291da177e4SLinus Torvalds { 2301da177e4SLinus Torvalds p = xdr_decode_hyper(p, &fattr->pre_size); 2311da177e4SLinus Torvalds p = xdr_decode_time3(p, &fattr->pre_mtime); 2321da177e4SLinus Torvalds p = xdr_decode_time3(p, &fattr->pre_ctime); 2331da177e4SLinus Torvalds fattr->valid |= NFS_ATTR_WCC; 2341da177e4SLinus Torvalds return p; 2351da177e4SLinus Torvalds } 2361da177e4SLinus Torvalds 2371da177e4SLinus Torvalds static inline u32 * 2381da177e4SLinus Torvalds xdr_decode_post_op_attr(u32 *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 2451da177e4SLinus Torvalds static inline u32 * 2461da177e4SLinus Torvalds xdr_decode_pre_op_attr(u32 *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 2541da177e4SLinus Torvalds static inline u32 * 2551da177e4SLinus Torvalds xdr_decode_wcc_data(u32 *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 2691da177e4SLinus Torvalds nfs3_xdr_fhandle(struct rpc_rqst *req, u32 *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 2801da177e4SLinus Torvalds nfs3_xdr_sattrargs(struct rpc_rqst *req, u32 *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 2951da177e4SLinus Torvalds nfs3_xdr_diropargs(struct rpc_rqst *req, u32 *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 /* 3041da177e4SLinus Torvalds * Encode access() argument 3051da177e4SLinus Torvalds */ 3061da177e4SLinus Torvalds static int 3071da177e4SLinus Torvalds nfs3_xdr_accessargs(struct rpc_rqst *req, u32 *p, struct nfs3_accessargs *args) 3081da177e4SLinus Torvalds { 3091da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fh); 3101da177e4SLinus Torvalds *p++ = htonl(args->access); 3111da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 3121da177e4SLinus Torvalds return 0; 3131da177e4SLinus Torvalds } 3141da177e4SLinus Torvalds 3151da177e4SLinus Torvalds /* 3161da177e4SLinus Torvalds * Arguments to a READ call. Since we read data directly into the page 3171da177e4SLinus Torvalds * cache, we also set up the reply iovec here so that iov[1] points 3181da177e4SLinus Torvalds * exactly to the page we want to fetch. 3191da177e4SLinus Torvalds */ 3201da177e4SLinus Torvalds static int 3211da177e4SLinus Torvalds nfs3_xdr_readargs(struct rpc_rqst *req, u32 *p, struct nfs_readargs *args) 3221da177e4SLinus Torvalds { 3231da177e4SLinus Torvalds struct rpc_auth *auth = req->rq_task->tk_auth; 3241da177e4SLinus Torvalds unsigned int replen; 3251da177e4SLinus Torvalds u32 count = args->count; 3261da177e4SLinus Torvalds 3271da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fh); 3281da177e4SLinus Torvalds p = xdr_encode_hyper(p, args->offset); 3291da177e4SLinus Torvalds *p++ = htonl(count); 3301da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 3311da177e4SLinus Torvalds 3321da177e4SLinus Torvalds /* Inline the page array */ 3331da177e4SLinus Torvalds replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readres_sz) << 2; 3341da177e4SLinus Torvalds xdr_inline_pages(&req->rq_rcv_buf, replen, 3351da177e4SLinus Torvalds args->pages, args->pgbase, count); 3361da177e4SLinus Torvalds return 0; 3371da177e4SLinus Torvalds } 3381da177e4SLinus Torvalds 3391da177e4SLinus Torvalds /* 3401da177e4SLinus Torvalds * Write arguments. Splice the buffer to be written into the iovec. 3411da177e4SLinus Torvalds */ 3421da177e4SLinus Torvalds static int 3431da177e4SLinus Torvalds nfs3_xdr_writeargs(struct rpc_rqst *req, u32 *p, struct nfs_writeargs *args) 3441da177e4SLinus Torvalds { 3451da177e4SLinus Torvalds struct xdr_buf *sndbuf = &req->rq_snd_buf; 3461da177e4SLinus Torvalds u32 count = args->count; 3471da177e4SLinus Torvalds 3481da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fh); 3491da177e4SLinus Torvalds p = xdr_encode_hyper(p, args->offset); 3501da177e4SLinus Torvalds *p++ = htonl(count); 3511da177e4SLinus Torvalds *p++ = htonl(args->stable); 3521da177e4SLinus Torvalds *p++ = htonl(count); 3531da177e4SLinus Torvalds sndbuf->len = xdr_adjust_iovec(sndbuf->head, p); 3541da177e4SLinus Torvalds 3551da177e4SLinus Torvalds /* Copy the page array */ 3561da177e4SLinus Torvalds xdr_encode_pages(sndbuf, args->pages, args->pgbase, count); 3571da177e4SLinus Torvalds return 0; 3581da177e4SLinus Torvalds } 3591da177e4SLinus Torvalds 3601da177e4SLinus Torvalds /* 3611da177e4SLinus Torvalds * Encode CREATE arguments 3621da177e4SLinus Torvalds */ 3631da177e4SLinus Torvalds static int 3641da177e4SLinus Torvalds nfs3_xdr_createargs(struct rpc_rqst *req, u32 *p, struct nfs3_createargs *args) 3651da177e4SLinus Torvalds { 3661da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fh); 3671da177e4SLinus Torvalds p = xdr_encode_array(p, args->name, args->len); 3681da177e4SLinus Torvalds 3691da177e4SLinus Torvalds *p++ = htonl(args->createmode); 3701da177e4SLinus Torvalds if (args->createmode == NFS3_CREATE_EXCLUSIVE) { 3711da177e4SLinus Torvalds *p++ = args->verifier[0]; 3721da177e4SLinus Torvalds *p++ = args->verifier[1]; 3731da177e4SLinus Torvalds } else 3741da177e4SLinus Torvalds p = xdr_encode_sattr(p, args->sattr); 3751da177e4SLinus Torvalds 3761da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 3771da177e4SLinus Torvalds return 0; 3781da177e4SLinus Torvalds } 3791da177e4SLinus Torvalds 3801da177e4SLinus Torvalds /* 3811da177e4SLinus Torvalds * Encode MKDIR arguments 3821da177e4SLinus Torvalds */ 3831da177e4SLinus Torvalds static int 3841da177e4SLinus Torvalds nfs3_xdr_mkdirargs(struct rpc_rqst *req, u32 *p, struct nfs3_mkdirargs *args) 3851da177e4SLinus Torvalds { 3861da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fh); 3871da177e4SLinus Torvalds p = xdr_encode_array(p, args->name, args->len); 3881da177e4SLinus Torvalds p = xdr_encode_sattr(p, args->sattr); 3891da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 3901da177e4SLinus Torvalds return 0; 3911da177e4SLinus Torvalds } 3921da177e4SLinus Torvalds 3931da177e4SLinus Torvalds /* 3941da177e4SLinus Torvalds * Encode SYMLINK arguments 3951da177e4SLinus Torvalds */ 3961da177e4SLinus Torvalds static int 3971da177e4SLinus Torvalds nfs3_xdr_symlinkargs(struct rpc_rqst *req, u32 *p, struct nfs3_symlinkargs *args) 3981da177e4SLinus Torvalds { 3991da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fromfh); 4001da177e4SLinus Torvalds p = xdr_encode_array(p, args->fromname, args->fromlen); 4011da177e4SLinus Torvalds p = xdr_encode_sattr(p, args->sattr); 4021da177e4SLinus Torvalds p = xdr_encode_array(p, args->topath, args->tolen); 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 MKNOD arguments 4091da177e4SLinus Torvalds */ 4101da177e4SLinus Torvalds static int 4111da177e4SLinus Torvalds nfs3_xdr_mknodargs(struct rpc_rqst *req, u32 *p, struct nfs3_mknodargs *args) 4121da177e4SLinus Torvalds { 4131da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fh); 4141da177e4SLinus Torvalds p = xdr_encode_array(p, args->name, args->len); 4151da177e4SLinus Torvalds *p++ = htonl(args->type); 4161da177e4SLinus Torvalds p = xdr_encode_sattr(p, args->sattr); 4171da177e4SLinus Torvalds if (args->type == NF3CHR || args->type == NF3BLK) { 4181da177e4SLinus Torvalds *p++ = htonl(MAJOR(args->rdev)); 4191da177e4SLinus Torvalds *p++ = htonl(MINOR(args->rdev)); 4201da177e4SLinus Torvalds } 4211da177e4SLinus Torvalds 4221da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 4231da177e4SLinus Torvalds return 0; 4241da177e4SLinus Torvalds } 4251da177e4SLinus Torvalds 4261da177e4SLinus Torvalds /* 4271da177e4SLinus Torvalds * Encode RENAME arguments 4281da177e4SLinus Torvalds */ 4291da177e4SLinus Torvalds static int 4301da177e4SLinus Torvalds nfs3_xdr_renameargs(struct rpc_rqst *req, u32 *p, struct nfs3_renameargs *args) 4311da177e4SLinus Torvalds { 4321da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fromfh); 4331da177e4SLinus Torvalds p = xdr_encode_array(p, args->fromname, args->fromlen); 4341da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->tofh); 4351da177e4SLinus Torvalds p = xdr_encode_array(p, args->toname, args->tolen); 4361da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 4371da177e4SLinus Torvalds return 0; 4381da177e4SLinus Torvalds } 4391da177e4SLinus Torvalds 4401da177e4SLinus Torvalds /* 4411da177e4SLinus Torvalds * Encode LINK arguments 4421da177e4SLinus Torvalds */ 4431da177e4SLinus Torvalds static int 4441da177e4SLinus Torvalds nfs3_xdr_linkargs(struct rpc_rqst *req, u32 *p, struct nfs3_linkargs *args) 4451da177e4SLinus Torvalds { 4461da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fromfh); 4471da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->tofh); 4481da177e4SLinus Torvalds p = xdr_encode_array(p, args->toname, args->tolen); 4491da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 4501da177e4SLinus Torvalds return 0; 4511da177e4SLinus Torvalds } 4521da177e4SLinus Torvalds 4531da177e4SLinus Torvalds /* 4541da177e4SLinus Torvalds * Encode arguments to readdir call 4551da177e4SLinus Torvalds */ 4561da177e4SLinus Torvalds static int 4571da177e4SLinus Torvalds nfs3_xdr_readdirargs(struct rpc_rqst *req, u32 *p, struct nfs3_readdirargs *args) 4581da177e4SLinus Torvalds { 4591da177e4SLinus Torvalds struct rpc_auth *auth = req->rq_task->tk_auth; 4601da177e4SLinus Torvalds unsigned int replen; 4611da177e4SLinus Torvalds u32 count = args->count; 4621da177e4SLinus Torvalds 4631da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fh); 4641da177e4SLinus Torvalds p = xdr_encode_hyper(p, args->cookie); 4651da177e4SLinus Torvalds *p++ = args->verf[0]; 4661da177e4SLinus Torvalds *p++ = args->verf[1]; 4671da177e4SLinus Torvalds if (args->plus) { 4681da177e4SLinus Torvalds /* readdirplus: need dircount + buffer size. 4691da177e4SLinus Torvalds * We just make sure we make dircount big enough */ 4701da177e4SLinus Torvalds *p++ = htonl(count >> 3); 4711da177e4SLinus Torvalds } 4721da177e4SLinus Torvalds *p++ = htonl(count); 4731da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 4741da177e4SLinus Torvalds 4751da177e4SLinus Torvalds /* Inline the page array */ 4761da177e4SLinus Torvalds replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readdirres_sz) << 2; 4771da177e4SLinus Torvalds xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, 0, count); 4781da177e4SLinus Torvalds return 0; 4791da177e4SLinus Torvalds } 4801da177e4SLinus Torvalds 4811da177e4SLinus Torvalds /* 4821da177e4SLinus Torvalds * Decode the result of a readdir call. 4831da177e4SLinus Torvalds * We just check for syntactical correctness. 4841da177e4SLinus Torvalds */ 4851da177e4SLinus Torvalds static int 4861da177e4SLinus Torvalds nfs3_xdr_readdirres(struct rpc_rqst *req, u32 *p, struct nfs3_readdirres *res) 4871da177e4SLinus Torvalds { 4881da177e4SLinus Torvalds struct xdr_buf *rcvbuf = &req->rq_rcv_buf; 4891da177e4SLinus Torvalds struct kvec *iov = rcvbuf->head; 4901da177e4SLinus Torvalds struct page **page; 4911da177e4SLinus Torvalds int hdrlen, recvd; 4921da177e4SLinus Torvalds int status, nr; 4931da177e4SLinus Torvalds unsigned int len, pglen; 4941da177e4SLinus Torvalds u32 *entry, *end, *kaddr; 4951da177e4SLinus Torvalds 4961da177e4SLinus Torvalds status = ntohl(*p++); 4971da177e4SLinus Torvalds /* Decode post_op_attrs */ 4981da177e4SLinus Torvalds p = xdr_decode_post_op_attr(p, res->dir_attr); 4991da177e4SLinus Torvalds if (status) 5001da177e4SLinus Torvalds return -nfs_stat_to_errno(status); 5011da177e4SLinus Torvalds /* Decode verifier cookie */ 5021da177e4SLinus Torvalds if (res->verf) { 5031da177e4SLinus Torvalds res->verf[0] = *p++; 5041da177e4SLinus Torvalds res->verf[1] = *p++; 5051da177e4SLinus Torvalds } else { 5061da177e4SLinus Torvalds p += 2; 5071da177e4SLinus Torvalds } 5081da177e4SLinus Torvalds 5091da177e4SLinus Torvalds hdrlen = (u8 *) p - (u8 *) iov->iov_base; 5101da177e4SLinus Torvalds if (iov->iov_len < hdrlen) { 5111da177e4SLinus Torvalds printk(KERN_WARNING "NFS: READDIR reply header overflowed:" 5121da177e4SLinus Torvalds "length %d > %Zu\n", hdrlen, iov->iov_len); 5131da177e4SLinus Torvalds return -errno_NFSERR_IO; 5141da177e4SLinus Torvalds } else if (iov->iov_len != hdrlen) { 5151da177e4SLinus Torvalds dprintk("NFS: READDIR header is short. iovec will be shifted.\n"); 5161da177e4SLinus Torvalds xdr_shift_buf(rcvbuf, iov->iov_len - hdrlen); 5171da177e4SLinus Torvalds } 5181da177e4SLinus Torvalds 5191da177e4SLinus Torvalds pglen = rcvbuf->page_len; 5201da177e4SLinus Torvalds recvd = rcvbuf->len - hdrlen; 5211da177e4SLinus Torvalds if (pglen > recvd) 5221da177e4SLinus Torvalds pglen = recvd; 5231da177e4SLinus Torvalds page = rcvbuf->pages; 5241da177e4SLinus Torvalds kaddr = p = (u32 *)kmap_atomic(*page, KM_USER0); 5251da177e4SLinus Torvalds end = (u32 *)((char *)p + pglen); 5261da177e4SLinus Torvalds entry = p; 5271da177e4SLinus Torvalds for (nr = 0; *p++; nr++) { 5281da177e4SLinus Torvalds if (p + 3 > end) 5291da177e4SLinus Torvalds goto short_pkt; 5301da177e4SLinus Torvalds p += 2; /* inode # */ 5311da177e4SLinus Torvalds len = ntohl(*p++); /* string length */ 5321da177e4SLinus Torvalds p += XDR_QUADLEN(len) + 2; /* name + cookie */ 5331da177e4SLinus Torvalds if (len > NFS3_MAXNAMLEN) { 5341da177e4SLinus Torvalds printk(KERN_WARNING "NFS: giant filename in readdir (len %x)!\n", 5351da177e4SLinus Torvalds len); 5361da177e4SLinus Torvalds goto err_unmap; 5371da177e4SLinus Torvalds } 5381da177e4SLinus Torvalds 5391da177e4SLinus Torvalds if (res->plus) { 5401da177e4SLinus Torvalds /* post_op_attr */ 5411da177e4SLinus Torvalds if (p + 2 > end) 5421da177e4SLinus Torvalds goto short_pkt; 5431da177e4SLinus Torvalds if (*p++) { 5441da177e4SLinus Torvalds p += 21; 5451da177e4SLinus Torvalds if (p + 1 > end) 5461da177e4SLinus Torvalds goto short_pkt; 5471da177e4SLinus Torvalds } 5481da177e4SLinus Torvalds /* post_op_fh3 */ 5491da177e4SLinus Torvalds if (*p++) { 5501da177e4SLinus Torvalds if (p + 1 > end) 5511da177e4SLinus Torvalds goto short_pkt; 5521da177e4SLinus Torvalds len = ntohl(*p++); 5531da177e4SLinus Torvalds if (len > NFS3_FHSIZE) { 5541da177e4SLinus Torvalds printk(KERN_WARNING "NFS: giant filehandle in " 5551da177e4SLinus Torvalds "readdir (len %x)!\n", len); 5561da177e4SLinus Torvalds goto err_unmap; 5571da177e4SLinus Torvalds } 5581da177e4SLinus Torvalds p += XDR_QUADLEN(len); 5591da177e4SLinus Torvalds } 5601da177e4SLinus Torvalds } 5611da177e4SLinus Torvalds 5621da177e4SLinus Torvalds if (p + 2 > end) 5631da177e4SLinus Torvalds goto short_pkt; 5641da177e4SLinus Torvalds entry = p; 5651da177e4SLinus Torvalds } 5661da177e4SLinus Torvalds if (!nr && (entry[0] != 0 || entry[1] == 0)) 5671da177e4SLinus Torvalds goto short_pkt; 5681da177e4SLinus Torvalds out: 5691da177e4SLinus Torvalds kunmap_atomic(kaddr, KM_USER0); 5701da177e4SLinus Torvalds return nr; 5711da177e4SLinus Torvalds short_pkt: 5721da177e4SLinus Torvalds entry[0] = entry[1] = 0; 5731da177e4SLinus Torvalds /* truncate listing ? */ 5741da177e4SLinus Torvalds if (!nr) { 5751da177e4SLinus Torvalds printk(KERN_NOTICE "NFS: readdir reply truncated!\n"); 5761da177e4SLinus Torvalds entry[1] = 1; 5771da177e4SLinus Torvalds } 5781da177e4SLinus Torvalds goto out; 5791da177e4SLinus Torvalds err_unmap: 5801da177e4SLinus Torvalds nr = -errno_NFSERR_IO; 5811da177e4SLinus Torvalds goto out; 5821da177e4SLinus Torvalds } 5831da177e4SLinus Torvalds 5841da177e4SLinus Torvalds u32 * 5851da177e4SLinus Torvalds nfs3_decode_dirent(u32 *p, struct nfs_entry *entry, int plus) 5861da177e4SLinus Torvalds { 5871da177e4SLinus Torvalds struct nfs_entry old = *entry; 5881da177e4SLinus Torvalds 5891da177e4SLinus Torvalds if (!*p++) { 5901da177e4SLinus Torvalds if (!*p) 5911da177e4SLinus Torvalds return ERR_PTR(-EAGAIN); 5921da177e4SLinus Torvalds entry->eof = 1; 5931da177e4SLinus Torvalds return ERR_PTR(-EBADCOOKIE); 5941da177e4SLinus Torvalds } 5951da177e4SLinus Torvalds 5961da177e4SLinus Torvalds p = xdr_decode_hyper(p, &entry->ino); 5971da177e4SLinus Torvalds entry->len = ntohl(*p++); 5981da177e4SLinus Torvalds entry->name = (const char *) p; 5991da177e4SLinus Torvalds p += XDR_QUADLEN(entry->len); 6001da177e4SLinus Torvalds entry->prev_cookie = entry->cookie; 6011da177e4SLinus Torvalds p = xdr_decode_hyper(p, &entry->cookie); 6021da177e4SLinus Torvalds 6031da177e4SLinus Torvalds if (plus) { 6041da177e4SLinus Torvalds entry->fattr->valid = 0; 6051da177e4SLinus Torvalds p = xdr_decode_post_op_attr(p, entry->fattr); 6061da177e4SLinus Torvalds /* In fact, a post_op_fh3: */ 6071da177e4SLinus Torvalds if (*p++) { 6081da177e4SLinus Torvalds p = xdr_decode_fhandle(p, entry->fh); 6091da177e4SLinus Torvalds /* Ugh -- server reply was truncated */ 6101da177e4SLinus Torvalds if (p == NULL) { 6111da177e4SLinus Torvalds dprintk("NFS: FH truncated\n"); 6121da177e4SLinus Torvalds *entry = old; 6131da177e4SLinus Torvalds return ERR_PTR(-EAGAIN); 6141da177e4SLinus Torvalds } 6151da177e4SLinus Torvalds } else 6161da177e4SLinus Torvalds memset((u8*)(entry->fh), 0, sizeof(*entry->fh)); 6171da177e4SLinus Torvalds } 6181da177e4SLinus Torvalds 6191da177e4SLinus Torvalds entry->eof = !p[0] && p[1]; 6201da177e4SLinus Torvalds return p; 6211da177e4SLinus Torvalds } 6221da177e4SLinus Torvalds 6231da177e4SLinus Torvalds /* 6241da177e4SLinus Torvalds * Encode COMMIT arguments 6251da177e4SLinus Torvalds */ 6261da177e4SLinus Torvalds static int 6271da177e4SLinus Torvalds nfs3_xdr_commitargs(struct rpc_rqst *req, u32 *p, struct nfs_writeargs *args) 6281da177e4SLinus Torvalds { 6291da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fh); 6301da177e4SLinus Torvalds p = xdr_encode_hyper(p, args->offset); 6311da177e4SLinus Torvalds *p++ = htonl(args->count); 6321da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 6331da177e4SLinus Torvalds return 0; 6341da177e4SLinus Torvalds } 6351da177e4SLinus Torvalds 636b7fa0554SAndreas Gruenbacher #ifdef CONFIG_NFS_V3_ACL 637b7fa0554SAndreas Gruenbacher /* 638b7fa0554SAndreas Gruenbacher * Encode GETACL arguments 639b7fa0554SAndreas Gruenbacher */ 640b7fa0554SAndreas Gruenbacher static int 641b7fa0554SAndreas Gruenbacher nfs3_xdr_getaclargs(struct rpc_rqst *req, u32 *p, 642b7fa0554SAndreas Gruenbacher struct nfs3_getaclargs *args) 643b7fa0554SAndreas Gruenbacher { 644b7fa0554SAndreas Gruenbacher struct rpc_auth *auth = req->rq_task->tk_auth; 645b7fa0554SAndreas Gruenbacher unsigned int replen; 646b7fa0554SAndreas Gruenbacher 647b7fa0554SAndreas Gruenbacher p = xdr_encode_fhandle(p, args->fh); 648b7fa0554SAndreas Gruenbacher *p++ = htonl(args->mask); 649b7fa0554SAndreas Gruenbacher req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 650b7fa0554SAndreas Gruenbacher 651b7fa0554SAndreas Gruenbacher if (args->mask & (NFS_ACL | NFS_DFACL)) { 652b7fa0554SAndreas Gruenbacher /* Inline the page array */ 653b7fa0554SAndreas Gruenbacher replen = (RPC_REPHDRSIZE + auth->au_rslack + 654b7fa0554SAndreas Gruenbacher ACL3_getaclres_sz) << 2; 655b7fa0554SAndreas Gruenbacher xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, 0, 656b7fa0554SAndreas Gruenbacher NFSACL_MAXPAGES << PAGE_SHIFT); 657b7fa0554SAndreas Gruenbacher } 658b7fa0554SAndreas Gruenbacher return 0; 659b7fa0554SAndreas Gruenbacher } 660b7fa0554SAndreas Gruenbacher 661b7fa0554SAndreas Gruenbacher /* 662b7fa0554SAndreas Gruenbacher * Encode SETACL arguments 663b7fa0554SAndreas Gruenbacher */ 664b7fa0554SAndreas Gruenbacher static int 665b7fa0554SAndreas Gruenbacher nfs3_xdr_setaclargs(struct rpc_rqst *req, u32 *p, 666b7fa0554SAndreas Gruenbacher struct nfs3_setaclargs *args) 667b7fa0554SAndreas Gruenbacher { 668b7fa0554SAndreas Gruenbacher struct xdr_buf *buf = &req->rq_snd_buf; 669b7fa0554SAndreas Gruenbacher unsigned int base, len_in_head, len = nfsacl_size( 670b7fa0554SAndreas Gruenbacher (args->mask & NFS_ACL) ? args->acl_access : NULL, 671b7fa0554SAndreas Gruenbacher (args->mask & NFS_DFACL) ? args->acl_default : NULL); 672b7fa0554SAndreas Gruenbacher int count, err; 673b7fa0554SAndreas Gruenbacher 674b7fa0554SAndreas Gruenbacher p = xdr_encode_fhandle(p, NFS_FH(args->inode)); 675b7fa0554SAndreas Gruenbacher *p++ = htonl(args->mask); 676b7fa0554SAndreas Gruenbacher base = (char *)p - (char *)buf->head->iov_base; 677b7fa0554SAndreas Gruenbacher /* put as much of the acls into head as possible. */ 678b7fa0554SAndreas Gruenbacher len_in_head = min_t(unsigned int, buf->head->iov_len - base, len); 679b7fa0554SAndreas Gruenbacher len -= len_in_head; 680b7fa0554SAndreas Gruenbacher req->rq_slen = xdr_adjust_iovec(req->rq_svec, p + len_in_head); 681b7fa0554SAndreas Gruenbacher 682b7fa0554SAndreas Gruenbacher for (count = 0; (count << PAGE_SHIFT) < len; count++) { 683b7fa0554SAndreas Gruenbacher args->pages[count] = alloc_page(GFP_KERNEL); 684b7fa0554SAndreas Gruenbacher if (!args->pages[count]) { 685b7fa0554SAndreas Gruenbacher while (count) 686b7fa0554SAndreas Gruenbacher __free_page(args->pages[--count]); 687b7fa0554SAndreas Gruenbacher return -ENOMEM; 688b7fa0554SAndreas Gruenbacher } 689b7fa0554SAndreas Gruenbacher } 690b7fa0554SAndreas Gruenbacher xdr_encode_pages(buf, args->pages, 0, len); 691b7fa0554SAndreas Gruenbacher 692b7fa0554SAndreas Gruenbacher err = nfsacl_encode(buf, base, args->inode, 693b7fa0554SAndreas Gruenbacher (args->mask & NFS_ACL) ? 694b7fa0554SAndreas Gruenbacher args->acl_access : NULL, 1, 0); 695b7fa0554SAndreas Gruenbacher if (err > 0) 696b7fa0554SAndreas Gruenbacher err = nfsacl_encode(buf, base + err, args->inode, 697b7fa0554SAndreas Gruenbacher (args->mask & NFS_DFACL) ? 698b7fa0554SAndreas Gruenbacher args->acl_default : NULL, 1, 699b7fa0554SAndreas Gruenbacher NFS_ACL_DEFAULT); 700b7fa0554SAndreas Gruenbacher return (err > 0) ? 0 : err; 701b7fa0554SAndreas Gruenbacher } 702b7fa0554SAndreas Gruenbacher #endif /* CONFIG_NFS_V3_ACL */ 703b7fa0554SAndreas Gruenbacher 7041da177e4SLinus Torvalds /* 7051da177e4SLinus Torvalds * NFS XDR decode functions 7061da177e4SLinus Torvalds */ 7071da177e4SLinus Torvalds 7081da177e4SLinus Torvalds /* 7091da177e4SLinus Torvalds * Decode attrstat reply. 7101da177e4SLinus Torvalds */ 7111da177e4SLinus Torvalds static int 7121da177e4SLinus Torvalds nfs3_xdr_attrstat(struct rpc_rqst *req, u32 *p, struct nfs_fattr *fattr) 7131da177e4SLinus Torvalds { 7141da177e4SLinus Torvalds int status; 7151da177e4SLinus Torvalds 7161da177e4SLinus Torvalds if ((status = ntohl(*p++))) 7171da177e4SLinus Torvalds return -nfs_stat_to_errno(status); 7181da177e4SLinus Torvalds xdr_decode_fattr(p, fattr); 7191da177e4SLinus Torvalds return 0; 7201da177e4SLinus Torvalds } 7211da177e4SLinus Torvalds 7221da177e4SLinus Torvalds /* 7231da177e4SLinus Torvalds * Decode status+wcc_data reply 7241da177e4SLinus Torvalds * SATTR, REMOVE, RMDIR 7251da177e4SLinus Torvalds */ 7261da177e4SLinus Torvalds static int 7271da177e4SLinus Torvalds nfs3_xdr_wccstat(struct rpc_rqst *req, u32 *p, struct nfs_fattr *fattr) 7281da177e4SLinus Torvalds { 7291da177e4SLinus Torvalds int status; 7301da177e4SLinus Torvalds 7311da177e4SLinus Torvalds if ((status = ntohl(*p++))) 7321da177e4SLinus Torvalds status = -nfs_stat_to_errno(status); 7331da177e4SLinus Torvalds xdr_decode_wcc_data(p, fattr); 7341da177e4SLinus Torvalds return status; 7351da177e4SLinus Torvalds } 7361da177e4SLinus Torvalds 7371da177e4SLinus Torvalds /* 7381da177e4SLinus Torvalds * Decode LOOKUP reply 7391da177e4SLinus Torvalds */ 7401da177e4SLinus Torvalds static int 7411da177e4SLinus Torvalds nfs3_xdr_lookupres(struct rpc_rqst *req, u32 *p, struct nfs3_diropres *res) 7421da177e4SLinus Torvalds { 7431da177e4SLinus Torvalds int status; 7441da177e4SLinus Torvalds 7451da177e4SLinus Torvalds if ((status = ntohl(*p++))) { 7461da177e4SLinus Torvalds status = -nfs_stat_to_errno(status); 7471da177e4SLinus Torvalds } else { 7481da177e4SLinus Torvalds if (!(p = xdr_decode_fhandle(p, res->fh))) 7491da177e4SLinus Torvalds return -errno_NFSERR_IO; 7501da177e4SLinus Torvalds p = xdr_decode_post_op_attr(p, res->fattr); 7511da177e4SLinus Torvalds } 7521da177e4SLinus Torvalds xdr_decode_post_op_attr(p, res->dir_attr); 7531da177e4SLinus Torvalds return status; 7541da177e4SLinus Torvalds } 7551da177e4SLinus Torvalds 7561da177e4SLinus Torvalds /* 7571da177e4SLinus Torvalds * Decode ACCESS reply 7581da177e4SLinus Torvalds */ 7591da177e4SLinus Torvalds static int 7601da177e4SLinus Torvalds nfs3_xdr_accessres(struct rpc_rqst *req, u32 *p, struct nfs3_accessres *res) 7611da177e4SLinus Torvalds { 7621da177e4SLinus Torvalds int status = ntohl(*p++); 7631da177e4SLinus Torvalds 7641da177e4SLinus Torvalds p = xdr_decode_post_op_attr(p, res->fattr); 7651da177e4SLinus Torvalds if (status) 7661da177e4SLinus Torvalds return -nfs_stat_to_errno(status); 7671da177e4SLinus Torvalds res->access = ntohl(*p++); 7681da177e4SLinus Torvalds return 0; 7691da177e4SLinus Torvalds } 7701da177e4SLinus Torvalds 7711da177e4SLinus Torvalds static int 7721da177e4SLinus Torvalds nfs3_xdr_readlinkargs(struct rpc_rqst *req, u32 *p, struct nfs3_readlinkargs *args) 7731da177e4SLinus Torvalds { 7741da177e4SLinus Torvalds struct rpc_auth *auth = req->rq_task->tk_auth; 7751da177e4SLinus Torvalds unsigned int replen; 7761da177e4SLinus Torvalds 7771da177e4SLinus Torvalds p = xdr_encode_fhandle(p, args->fh); 7781da177e4SLinus Torvalds req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); 7791da177e4SLinus Torvalds 7801da177e4SLinus Torvalds /* Inline the page array */ 7811da177e4SLinus Torvalds replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readlinkres_sz) << 2; 7821da177e4SLinus Torvalds xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, args->pgbase, args->pglen); 7831da177e4SLinus Torvalds return 0; 7841da177e4SLinus Torvalds } 7851da177e4SLinus Torvalds 7861da177e4SLinus Torvalds /* 7871da177e4SLinus Torvalds * Decode READLINK reply 7881da177e4SLinus Torvalds */ 7891da177e4SLinus Torvalds static int 7901da177e4SLinus Torvalds nfs3_xdr_readlinkres(struct rpc_rqst *req, u32 *p, struct nfs_fattr *fattr) 7911da177e4SLinus Torvalds { 7921da177e4SLinus Torvalds struct xdr_buf *rcvbuf = &req->rq_rcv_buf; 7931da177e4SLinus Torvalds struct kvec *iov = rcvbuf->head; 7941da177e4SLinus Torvalds int hdrlen, len, recvd; 7951da177e4SLinus Torvalds char *kaddr; 7961da177e4SLinus Torvalds int status; 7971da177e4SLinus Torvalds 7981da177e4SLinus Torvalds status = ntohl(*p++); 7991da177e4SLinus Torvalds p = xdr_decode_post_op_attr(p, fattr); 8001da177e4SLinus Torvalds 8011da177e4SLinus Torvalds if (status != 0) 8021da177e4SLinus Torvalds return -nfs_stat_to_errno(status); 8031da177e4SLinus Torvalds 8041da177e4SLinus Torvalds /* Convert length of symlink */ 8051da177e4SLinus Torvalds len = ntohl(*p++); 8061da177e4SLinus Torvalds if (len >= rcvbuf->page_len || len <= 0) { 8071da177e4SLinus Torvalds dprintk(KERN_WARNING "nfs: server returned giant symlink!\n"); 8081da177e4SLinus Torvalds return -ENAMETOOLONG; 8091da177e4SLinus Torvalds } 8101da177e4SLinus Torvalds 8111da177e4SLinus Torvalds hdrlen = (u8 *) p - (u8 *) iov->iov_base; 8121da177e4SLinus Torvalds if (iov->iov_len < hdrlen) { 8131da177e4SLinus Torvalds printk(KERN_WARNING "NFS: READLINK reply header overflowed:" 8141da177e4SLinus Torvalds "length %d > %Zu\n", hdrlen, iov->iov_len); 8151da177e4SLinus Torvalds return -errno_NFSERR_IO; 8161da177e4SLinus Torvalds } else if (iov->iov_len != hdrlen) { 8171da177e4SLinus Torvalds dprintk("NFS: READLINK header is short. iovec will be shifted.\n"); 8181da177e4SLinus Torvalds xdr_shift_buf(rcvbuf, iov->iov_len - hdrlen); 8191da177e4SLinus Torvalds } 8201da177e4SLinus Torvalds recvd = req->rq_rcv_buf.len - hdrlen; 8211da177e4SLinus Torvalds if (recvd < len) { 8221da177e4SLinus Torvalds printk(KERN_WARNING "NFS: server cheating in readlink reply: " 8231da177e4SLinus Torvalds "count %u > recvd %u\n", len, recvd); 8241da177e4SLinus Torvalds return -EIO; 8251da177e4SLinus Torvalds } 8261da177e4SLinus Torvalds 8271da177e4SLinus Torvalds /* NULL terminate the string we got */ 8281da177e4SLinus Torvalds kaddr = (char*)kmap_atomic(rcvbuf->pages[0], KM_USER0); 8291da177e4SLinus Torvalds kaddr[len+rcvbuf->page_base] = '\0'; 8301da177e4SLinus Torvalds kunmap_atomic(kaddr, KM_USER0); 8311da177e4SLinus Torvalds return 0; 8321da177e4SLinus Torvalds } 8331da177e4SLinus Torvalds 8341da177e4SLinus Torvalds /* 8351da177e4SLinus Torvalds * Decode READ reply 8361da177e4SLinus Torvalds */ 8371da177e4SLinus Torvalds static int 8381da177e4SLinus Torvalds nfs3_xdr_readres(struct rpc_rqst *req, u32 *p, struct nfs_readres *res) 8391da177e4SLinus Torvalds { 8401da177e4SLinus Torvalds struct kvec *iov = req->rq_rcv_buf.head; 8411da177e4SLinus Torvalds int status, count, ocount, recvd, hdrlen; 8421da177e4SLinus Torvalds 8431da177e4SLinus Torvalds status = ntohl(*p++); 8441da177e4SLinus Torvalds p = xdr_decode_post_op_attr(p, res->fattr); 8451da177e4SLinus Torvalds 8461da177e4SLinus Torvalds if (status != 0) 8471da177e4SLinus Torvalds return -nfs_stat_to_errno(status); 8481da177e4SLinus Torvalds 8491da177e4SLinus Torvalds /* Decode reply could and EOF flag. NFSv3 is somewhat redundant 8501da177e4SLinus Torvalds * in that it puts the count both in the res struct and in the 8511da177e4SLinus Torvalds * opaque data count. */ 8521da177e4SLinus Torvalds count = ntohl(*p++); 8531da177e4SLinus Torvalds res->eof = ntohl(*p++); 8541da177e4SLinus Torvalds ocount = ntohl(*p++); 8551da177e4SLinus Torvalds 8561da177e4SLinus Torvalds if (ocount != count) { 8571da177e4SLinus Torvalds printk(KERN_WARNING "NFS: READ count doesn't match RPC opaque count.\n"); 8581da177e4SLinus Torvalds return -errno_NFSERR_IO; 8591da177e4SLinus Torvalds } 8601da177e4SLinus Torvalds 8611da177e4SLinus Torvalds hdrlen = (u8 *) p - (u8 *) iov->iov_base; 8621da177e4SLinus Torvalds if (iov->iov_len < hdrlen) { 8631da177e4SLinus Torvalds printk(KERN_WARNING "NFS: READ reply header overflowed:" 8641da177e4SLinus Torvalds "length %d > %Zu\n", hdrlen, iov->iov_len); 8651da177e4SLinus Torvalds return -errno_NFSERR_IO; 8661da177e4SLinus Torvalds } else if (iov->iov_len != hdrlen) { 8671da177e4SLinus Torvalds dprintk("NFS: READ header is short. iovec will be shifted.\n"); 8681da177e4SLinus Torvalds xdr_shift_buf(&req->rq_rcv_buf, iov->iov_len - hdrlen); 8691da177e4SLinus Torvalds } 8701da177e4SLinus Torvalds 8711da177e4SLinus Torvalds recvd = req->rq_rcv_buf.len - hdrlen; 8721da177e4SLinus Torvalds if (count > recvd) { 8731da177e4SLinus Torvalds printk(KERN_WARNING "NFS: server cheating in read reply: " 8741da177e4SLinus Torvalds "count %d > recvd %d\n", count, recvd); 8751da177e4SLinus Torvalds count = recvd; 8761da177e4SLinus Torvalds res->eof = 0; 8771da177e4SLinus Torvalds } 8781da177e4SLinus Torvalds 8791da177e4SLinus Torvalds if (count < res->count) 8801da177e4SLinus Torvalds res->count = count; 8811da177e4SLinus Torvalds 8821da177e4SLinus Torvalds return count; 8831da177e4SLinus Torvalds } 8841da177e4SLinus Torvalds 8851da177e4SLinus Torvalds /* 8861da177e4SLinus Torvalds * Decode WRITE response 8871da177e4SLinus Torvalds */ 8881da177e4SLinus Torvalds static int 8891da177e4SLinus Torvalds nfs3_xdr_writeres(struct rpc_rqst *req, u32 *p, struct nfs_writeres *res) 8901da177e4SLinus Torvalds { 8911da177e4SLinus Torvalds int status; 8921da177e4SLinus Torvalds 8931da177e4SLinus Torvalds status = ntohl(*p++); 8941da177e4SLinus Torvalds p = xdr_decode_wcc_data(p, res->fattr); 8951da177e4SLinus Torvalds 8961da177e4SLinus Torvalds if (status != 0) 8971da177e4SLinus Torvalds return -nfs_stat_to_errno(status); 8981da177e4SLinus Torvalds 8991da177e4SLinus Torvalds res->count = ntohl(*p++); 9001da177e4SLinus Torvalds res->verf->committed = (enum nfs3_stable_how)ntohl(*p++); 9011da177e4SLinus Torvalds res->verf->verifier[0] = *p++; 9021da177e4SLinus Torvalds res->verf->verifier[1] = *p++; 9031da177e4SLinus Torvalds 9041da177e4SLinus Torvalds return res->count; 9051da177e4SLinus Torvalds } 9061da177e4SLinus Torvalds 9071da177e4SLinus Torvalds /* 9081da177e4SLinus Torvalds * Decode a CREATE response 9091da177e4SLinus Torvalds */ 9101da177e4SLinus Torvalds static int 9111da177e4SLinus Torvalds nfs3_xdr_createres(struct rpc_rqst *req, u32 *p, struct nfs3_diropres *res) 9121da177e4SLinus Torvalds { 9131da177e4SLinus Torvalds int status; 9141da177e4SLinus Torvalds 9151da177e4SLinus Torvalds status = ntohl(*p++); 9161da177e4SLinus Torvalds if (status == 0) { 9171da177e4SLinus Torvalds if (*p++) { 9181da177e4SLinus Torvalds if (!(p = xdr_decode_fhandle(p, res->fh))) 9191da177e4SLinus Torvalds return -errno_NFSERR_IO; 9201da177e4SLinus Torvalds p = xdr_decode_post_op_attr(p, res->fattr); 9211da177e4SLinus Torvalds } else { 9221da177e4SLinus Torvalds memset(res->fh, 0, sizeof(*res->fh)); 9231da177e4SLinus Torvalds /* Do decode post_op_attr but set it to NULL */ 9241da177e4SLinus Torvalds p = xdr_decode_post_op_attr(p, res->fattr); 9251da177e4SLinus Torvalds res->fattr->valid = 0; 9261da177e4SLinus Torvalds } 9271da177e4SLinus Torvalds } else { 9281da177e4SLinus Torvalds status = -nfs_stat_to_errno(status); 9291da177e4SLinus Torvalds } 9301da177e4SLinus Torvalds p = xdr_decode_wcc_data(p, res->dir_attr); 9311da177e4SLinus Torvalds return status; 9321da177e4SLinus Torvalds } 9331da177e4SLinus Torvalds 9341da177e4SLinus Torvalds /* 9351da177e4SLinus Torvalds * Decode RENAME reply 9361da177e4SLinus Torvalds */ 9371da177e4SLinus Torvalds static int 9381da177e4SLinus Torvalds nfs3_xdr_renameres(struct rpc_rqst *req, u32 *p, struct nfs3_renameres *res) 9391da177e4SLinus Torvalds { 9401da177e4SLinus Torvalds int status; 9411da177e4SLinus Torvalds 9421da177e4SLinus Torvalds if ((status = ntohl(*p++)) != 0) 9431da177e4SLinus Torvalds status = -nfs_stat_to_errno(status); 9441da177e4SLinus Torvalds p = xdr_decode_wcc_data(p, res->fromattr); 9451da177e4SLinus Torvalds p = xdr_decode_wcc_data(p, res->toattr); 9461da177e4SLinus Torvalds return status; 9471da177e4SLinus Torvalds } 9481da177e4SLinus Torvalds 9491da177e4SLinus Torvalds /* 9501da177e4SLinus Torvalds * Decode LINK reply 9511da177e4SLinus Torvalds */ 9521da177e4SLinus Torvalds static int 9531da177e4SLinus Torvalds nfs3_xdr_linkres(struct rpc_rqst *req, u32 *p, struct nfs3_linkres *res) 9541da177e4SLinus Torvalds { 9551da177e4SLinus Torvalds int status; 9561da177e4SLinus Torvalds 9571da177e4SLinus Torvalds if ((status = ntohl(*p++)) != 0) 9581da177e4SLinus Torvalds status = -nfs_stat_to_errno(status); 9591da177e4SLinus Torvalds p = xdr_decode_post_op_attr(p, res->fattr); 9601da177e4SLinus Torvalds p = xdr_decode_wcc_data(p, res->dir_attr); 9611da177e4SLinus Torvalds return status; 9621da177e4SLinus Torvalds } 9631da177e4SLinus Torvalds 9641da177e4SLinus Torvalds /* 9651da177e4SLinus Torvalds * Decode FSSTAT reply 9661da177e4SLinus Torvalds */ 9671da177e4SLinus Torvalds static int 9681da177e4SLinus Torvalds nfs3_xdr_fsstatres(struct rpc_rqst *req, u32 *p, struct nfs_fsstat *res) 9691da177e4SLinus Torvalds { 9701da177e4SLinus Torvalds int status; 9711da177e4SLinus Torvalds 9721da177e4SLinus Torvalds status = ntohl(*p++); 9731da177e4SLinus Torvalds 9741da177e4SLinus Torvalds p = xdr_decode_post_op_attr(p, res->fattr); 9751da177e4SLinus Torvalds if (status != 0) 9761da177e4SLinus Torvalds return -nfs_stat_to_errno(status); 9771da177e4SLinus Torvalds 9781da177e4SLinus Torvalds p = xdr_decode_hyper(p, &res->tbytes); 9791da177e4SLinus Torvalds p = xdr_decode_hyper(p, &res->fbytes); 9801da177e4SLinus Torvalds p = xdr_decode_hyper(p, &res->abytes); 9811da177e4SLinus Torvalds p = xdr_decode_hyper(p, &res->tfiles); 9821da177e4SLinus Torvalds p = xdr_decode_hyper(p, &res->ffiles); 9831da177e4SLinus Torvalds p = xdr_decode_hyper(p, &res->afiles); 9841da177e4SLinus Torvalds 9851da177e4SLinus Torvalds /* ignore invarsec */ 9861da177e4SLinus Torvalds return 0; 9871da177e4SLinus Torvalds } 9881da177e4SLinus Torvalds 9891da177e4SLinus Torvalds /* 9901da177e4SLinus Torvalds * Decode FSINFO reply 9911da177e4SLinus Torvalds */ 9921da177e4SLinus Torvalds static int 9931da177e4SLinus Torvalds nfs3_xdr_fsinfores(struct rpc_rqst *req, u32 *p, struct nfs_fsinfo *res) 9941da177e4SLinus Torvalds { 9951da177e4SLinus Torvalds int status; 9961da177e4SLinus Torvalds 9971da177e4SLinus Torvalds status = ntohl(*p++); 9981da177e4SLinus Torvalds 9991da177e4SLinus Torvalds p = xdr_decode_post_op_attr(p, res->fattr); 10001da177e4SLinus Torvalds if (status != 0) 10011da177e4SLinus Torvalds return -nfs_stat_to_errno(status); 10021da177e4SLinus Torvalds 10031da177e4SLinus Torvalds res->rtmax = ntohl(*p++); 10041da177e4SLinus Torvalds res->rtpref = ntohl(*p++); 10051da177e4SLinus Torvalds res->rtmult = ntohl(*p++); 10061da177e4SLinus Torvalds res->wtmax = ntohl(*p++); 10071da177e4SLinus Torvalds res->wtpref = ntohl(*p++); 10081da177e4SLinus Torvalds res->wtmult = ntohl(*p++); 10091da177e4SLinus Torvalds res->dtpref = ntohl(*p++); 10101da177e4SLinus Torvalds p = xdr_decode_hyper(p, &res->maxfilesize); 10111da177e4SLinus Torvalds 10121da177e4SLinus Torvalds /* ignore time_delta and properties */ 10131da177e4SLinus Torvalds res->lease_time = 0; 10141da177e4SLinus Torvalds return 0; 10151da177e4SLinus Torvalds } 10161da177e4SLinus Torvalds 10171da177e4SLinus Torvalds /* 10181da177e4SLinus Torvalds * Decode PATHCONF reply 10191da177e4SLinus Torvalds */ 10201da177e4SLinus Torvalds static int 10211da177e4SLinus Torvalds nfs3_xdr_pathconfres(struct rpc_rqst *req, u32 *p, struct nfs_pathconf *res) 10221da177e4SLinus Torvalds { 10231da177e4SLinus Torvalds int status; 10241da177e4SLinus Torvalds 10251da177e4SLinus Torvalds status = ntohl(*p++); 10261da177e4SLinus Torvalds 10271da177e4SLinus Torvalds p = xdr_decode_post_op_attr(p, res->fattr); 10281da177e4SLinus Torvalds if (status != 0) 10291da177e4SLinus Torvalds return -nfs_stat_to_errno(status); 10301da177e4SLinus Torvalds res->max_link = ntohl(*p++); 10311da177e4SLinus Torvalds res->max_namelen = ntohl(*p++); 10321da177e4SLinus Torvalds 10331da177e4SLinus Torvalds /* ignore remaining fields */ 10341da177e4SLinus Torvalds return 0; 10351da177e4SLinus Torvalds } 10361da177e4SLinus Torvalds 10371da177e4SLinus Torvalds /* 10381da177e4SLinus Torvalds * Decode COMMIT reply 10391da177e4SLinus Torvalds */ 10401da177e4SLinus Torvalds static int 10411da177e4SLinus Torvalds nfs3_xdr_commitres(struct rpc_rqst *req, u32 *p, struct nfs_writeres *res) 10421da177e4SLinus Torvalds { 10431da177e4SLinus Torvalds int status; 10441da177e4SLinus Torvalds 10451da177e4SLinus Torvalds status = ntohl(*p++); 10461da177e4SLinus Torvalds p = xdr_decode_wcc_data(p, res->fattr); 10471da177e4SLinus Torvalds if (status != 0) 10481da177e4SLinus Torvalds return -nfs_stat_to_errno(status); 10491da177e4SLinus Torvalds 10501da177e4SLinus Torvalds res->verf->verifier[0] = *p++; 10511da177e4SLinus Torvalds res->verf->verifier[1] = *p++; 10521da177e4SLinus Torvalds return 0; 10531da177e4SLinus Torvalds } 10541da177e4SLinus Torvalds 1055b7fa0554SAndreas Gruenbacher #ifdef CONFIG_NFS_V3_ACL 1056b7fa0554SAndreas Gruenbacher /* 1057b7fa0554SAndreas Gruenbacher * Decode GETACL reply 1058b7fa0554SAndreas Gruenbacher */ 1059b7fa0554SAndreas Gruenbacher static int 1060b7fa0554SAndreas Gruenbacher nfs3_xdr_getaclres(struct rpc_rqst *req, u32 *p, 1061b7fa0554SAndreas Gruenbacher struct nfs3_getaclres *res) 1062b7fa0554SAndreas Gruenbacher { 1063b7fa0554SAndreas Gruenbacher struct xdr_buf *buf = &req->rq_rcv_buf; 1064b7fa0554SAndreas Gruenbacher int status = ntohl(*p++); 1065b7fa0554SAndreas Gruenbacher struct posix_acl **acl; 1066b7fa0554SAndreas Gruenbacher unsigned int *aclcnt; 1067b7fa0554SAndreas Gruenbacher int err, base; 1068b7fa0554SAndreas Gruenbacher 1069b7fa0554SAndreas Gruenbacher if (status != 0) 1070b7fa0554SAndreas Gruenbacher return -nfs_stat_to_errno(status); 1071b7fa0554SAndreas Gruenbacher p = xdr_decode_post_op_attr(p, res->fattr); 1072b7fa0554SAndreas Gruenbacher res->mask = ntohl(*p++); 1073b7fa0554SAndreas Gruenbacher if (res->mask & ~(NFS_ACL|NFS_ACLCNT|NFS_DFACL|NFS_DFACLCNT)) 1074b7fa0554SAndreas Gruenbacher return -EINVAL; 1075b7fa0554SAndreas Gruenbacher base = (char *)p - (char *)req->rq_rcv_buf.head->iov_base; 1076b7fa0554SAndreas Gruenbacher 1077b7fa0554SAndreas Gruenbacher acl = (res->mask & NFS_ACL) ? &res->acl_access : NULL; 1078b7fa0554SAndreas Gruenbacher aclcnt = (res->mask & NFS_ACLCNT) ? &res->acl_access_count : NULL; 1079b7fa0554SAndreas Gruenbacher err = nfsacl_decode(buf, base, aclcnt, acl); 1080b7fa0554SAndreas Gruenbacher 1081b7fa0554SAndreas Gruenbacher acl = (res->mask & NFS_DFACL) ? &res->acl_default : NULL; 1082b7fa0554SAndreas Gruenbacher aclcnt = (res->mask & NFS_DFACLCNT) ? &res->acl_default_count : NULL; 1083b7fa0554SAndreas Gruenbacher if (err > 0) 1084b7fa0554SAndreas Gruenbacher err = nfsacl_decode(buf, base + err, aclcnt, acl); 1085b7fa0554SAndreas Gruenbacher return (err > 0) ? 0 : err; 1086b7fa0554SAndreas Gruenbacher } 1087b7fa0554SAndreas Gruenbacher 1088b7fa0554SAndreas Gruenbacher /* 1089b7fa0554SAndreas Gruenbacher * Decode setacl reply. 1090b7fa0554SAndreas Gruenbacher */ 1091b7fa0554SAndreas Gruenbacher static int 1092b7fa0554SAndreas Gruenbacher nfs3_xdr_setaclres(struct rpc_rqst *req, u32 *p, struct nfs_fattr *fattr) 1093b7fa0554SAndreas Gruenbacher { 1094b7fa0554SAndreas Gruenbacher int status = ntohl(*p++); 1095b7fa0554SAndreas Gruenbacher 1096b7fa0554SAndreas Gruenbacher if (status) 1097b7fa0554SAndreas Gruenbacher return -nfs_stat_to_errno(status); 1098b7fa0554SAndreas Gruenbacher xdr_decode_post_op_attr(p, fattr); 1099b7fa0554SAndreas Gruenbacher return 0; 1100b7fa0554SAndreas Gruenbacher } 1101b7fa0554SAndreas Gruenbacher #endif /* CONFIG_NFS_V3_ACL */ 1102b7fa0554SAndreas Gruenbacher 11031da177e4SLinus Torvalds #ifndef MAX 11041da177e4SLinus Torvalds # define MAX(a, b) (((a) > (b))? (a) : (b)) 11051da177e4SLinus Torvalds #endif 11061da177e4SLinus Torvalds 11071da177e4SLinus Torvalds #define PROC(proc, argtype, restype, timer) \ 11081da177e4SLinus Torvalds [NFS3PROC_##proc] = { \ 11091da177e4SLinus Torvalds .p_proc = NFS3PROC_##proc, \ 11101da177e4SLinus Torvalds .p_encode = (kxdrproc_t) nfs3_xdr_##argtype, \ 11111da177e4SLinus Torvalds .p_decode = (kxdrproc_t) nfs3_xdr_##restype, \ 11121da177e4SLinus Torvalds .p_bufsiz = MAX(NFS3_##argtype##_sz,NFS3_##restype##_sz) << 2, \ 11131da177e4SLinus Torvalds .p_timer = timer \ 11141da177e4SLinus Torvalds } 11151da177e4SLinus Torvalds 11161da177e4SLinus Torvalds struct rpc_procinfo nfs3_procedures[] = { 11171da177e4SLinus Torvalds PROC(GETATTR, fhandle, attrstat, 1), 11181da177e4SLinus Torvalds PROC(SETATTR, sattrargs, wccstat, 0), 11191da177e4SLinus Torvalds PROC(LOOKUP, diropargs, lookupres, 2), 11201da177e4SLinus Torvalds PROC(ACCESS, accessargs, accessres, 1), 11211da177e4SLinus Torvalds PROC(READLINK, readlinkargs, readlinkres, 3), 11221da177e4SLinus Torvalds PROC(READ, readargs, readres, 3), 11231da177e4SLinus Torvalds PROC(WRITE, writeargs, writeres, 4), 11241da177e4SLinus Torvalds PROC(CREATE, createargs, createres, 0), 11251da177e4SLinus Torvalds PROC(MKDIR, mkdirargs, createres, 0), 11261da177e4SLinus Torvalds PROC(SYMLINK, symlinkargs, createres, 0), 11271da177e4SLinus Torvalds PROC(MKNOD, mknodargs, createres, 0), 11281da177e4SLinus Torvalds PROC(REMOVE, diropargs, wccstat, 0), 11291da177e4SLinus Torvalds PROC(RMDIR, diropargs, wccstat, 0), 11301da177e4SLinus Torvalds PROC(RENAME, renameargs, renameres, 0), 11311da177e4SLinus Torvalds PROC(LINK, linkargs, linkres, 0), 11321da177e4SLinus Torvalds PROC(READDIR, readdirargs, readdirres, 3), 11331da177e4SLinus Torvalds PROC(READDIRPLUS, readdirargs, readdirres, 3), 11341da177e4SLinus Torvalds PROC(FSSTAT, fhandle, fsstatres, 0), 11351da177e4SLinus Torvalds PROC(FSINFO, fhandle, fsinfores, 0), 11361da177e4SLinus Torvalds PROC(PATHCONF, fhandle, pathconfres, 0), 11371da177e4SLinus Torvalds PROC(COMMIT, commitargs, commitres, 5), 11381da177e4SLinus Torvalds }; 11391da177e4SLinus Torvalds 11401da177e4SLinus Torvalds struct rpc_version nfs_version3 = { 11411da177e4SLinus Torvalds .number = 3, 11421da177e4SLinus Torvalds .nrprocs = sizeof(nfs3_procedures)/sizeof(nfs3_procedures[0]), 11431da177e4SLinus Torvalds .procs = nfs3_procedures 11441da177e4SLinus Torvalds }; 11451da177e4SLinus Torvalds 1146b7fa0554SAndreas Gruenbacher #ifdef CONFIG_NFS_V3_ACL 1147b7fa0554SAndreas Gruenbacher static struct rpc_procinfo nfs3_acl_procedures[] = { 1148b7fa0554SAndreas Gruenbacher [ACLPROC3_GETACL] = { 1149b7fa0554SAndreas Gruenbacher .p_proc = ACLPROC3_GETACL, 1150b7fa0554SAndreas Gruenbacher .p_encode = (kxdrproc_t) nfs3_xdr_getaclargs, 1151b7fa0554SAndreas Gruenbacher .p_decode = (kxdrproc_t) nfs3_xdr_getaclres, 1152b7fa0554SAndreas Gruenbacher .p_bufsiz = MAX(ACL3_getaclargs_sz, ACL3_getaclres_sz) << 2, 1153b7fa0554SAndreas Gruenbacher .p_timer = 1, 1154b7fa0554SAndreas Gruenbacher }, 1155b7fa0554SAndreas Gruenbacher [ACLPROC3_SETACL] = { 1156b7fa0554SAndreas Gruenbacher .p_proc = ACLPROC3_SETACL, 1157b7fa0554SAndreas Gruenbacher .p_encode = (kxdrproc_t) nfs3_xdr_setaclargs, 1158b7fa0554SAndreas Gruenbacher .p_decode = (kxdrproc_t) nfs3_xdr_setaclres, 1159b7fa0554SAndreas Gruenbacher .p_bufsiz = MAX(ACL3_setaclargs_sz, ACL3_setaclres_sz) << 2, 1160b7fa0554SAndreas Gruenbacher .p_timer = 0, 1161b7fa0554SAndreas Gruenbacher }, 1162b7fa0554SAndreas Gruenbacher }; 1163b7fa0554SAndreas Gruenbacher 1164b7fa0554SAndreas Gruenbacher struct rpc_version nfsacl_version3 = { 1165b7fa0554SAndreas Gruenbacher .number = 3, 1166b7fa0554SAndreas Gruenbacher .nrprocs = sizeof(nfs3_acl_procedures)/ 1167b7fa0554SAndreas Gruenbacher sizeof(nfs3_acl_procedures[0]), 1168b7fa0554SAndreas Gruenbacher .procs = nfs3_acl_procedures, 1169b7fa0554SAndreas Gruenbacher }; 1170b7fa0554SAndreas Gruenbacher #endif /* CONFIG_NFS_V3_ACL */ 1171