1b2441318SGreg Kroah-Hartman // SPDX-License-Identifier: GPL-2.0 21da177e4SLinus Torvalds /* 31da177e4SLinus Torvalds * linux/fs/nfs/callback_xdr.c 41da177e4SLinus Torvalds * 51da177e4SLinus Torvalds * Copyright (C) 2004 Trond Myklebust 61da177e4SLinus Torvalds * 71da177e4SLinus Torvalds * NFSv4 callback encode/decode procedures 81da177e4SLinus Torvalds */ 91da177e4SLinus Torvalds #include <linux/kernel.h> 101da177e4SLinus Torvalds #include <linux/sunrpc/svc.h> 111da177e4SLinus Torvalds #include <linux/nfs4.h> 121da177e4SLinus Torvalds #include <linux/nfs_fs.h> 139a3ba432STrond Myklebust #include <linux/ratelimit.h> 149a3ba432STrond Myklebust #include <linux/printk.h> 155a0e3ad6STejun Heo #include <linux/slab.h> 16c36fca52SAndy Adamson #include <linux/sunrpc/bc_xprt.h> 174ce79717STrond Myklebust #include "nfs4_fs.h" 181da177e4SLinus Torvalds #include "callback.h" 19c36fca52SAndy Adamson #include "internal.h" 2076e697baSTrond Myklebust #include "nfs4session.h" 212bb50aabSChuck Lever #include "nfs4trace.h" 221da177e4SLinus Torvalds 231da177e4SLinus Torvalds #define CB_OP_TAGLEN_MAXSZ (512) 2445724e8aSKinglong Mee #define CB_OP_HDR_RES_MAXSZ (2 * 4) // opcode, status 2545724e8aSKinglong Mee #define CB_OP_GETATTR_BITMAP_MAXSZ (4 * 4) // bitmap length, 3 bitmaps 261da177e4SLinus Torvalds #define CB_OP_GETATTR_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ + \ 271da177e4SLinus Torvalds CB_OP_GETATTR_BITMAP_MAXSZ + \ 2845724e8aSKinglong Mee /* change, size, ctime, mtime */\ 2945724e8aSKinglong Mee (2 + 2 + 3 + 3) * 4) 301da177e4SLinus Torvalds #define CB_OP_RECALL_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ) 311da177e4SLinus Torvalds 324aece6a1SBenny Halevy #if defined(CONFIG_NFS_V4_1) 33f2a62561SFred Isaman #define CB_OP_LAYOUTRECALL_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ) 341be5683bSMarc Eshel #define CB_OP_DEVICENOTIFY_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ) 354aece6a1SBenny Halevy #define CB_OP_SEQUENCE_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ + \ 3645724e8aSKinglong Mee NFS4_MAX_SESSIONID_LEN + \ 3745724e8aSKinglong Mee (1 + 3) * 4) // seqid, 3 slotids 3831f09607SAlexandros Batsakis #define CB_OP_RECALLANY_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ) 39b9efa1b2SAndy Adamson #define CB_OP_RECALLSLOT_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ) 40db783688SJeff Layton #define CB_OP_NOTIFY_LOCK_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ) 414aece6a1SBenny Halevy #endif /* CONFIG_NFS_V4_1 */ 425178a125SOlga Kornievskaia #ifdef CONFIG_NFS_V4_2 435178a125SOlga Kornievskaia #define CB_OP_OFFLOAD_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ) 445178a125SOlga Kornievskaia #endif /* CONFIG_NFS_V4_2 */ 454aece6a1SBenny Halevy 461da177e4SLinus Torvalds #define NFSDBG_FACILITY NFSDBG_CALLBACK 471da177e4SLinus Torvalds 4831d2b435SAndy Adamson /* Internal error code */ 4931d2b435SAndy Adamson #define NFS4ERR_RESOURCE_HDR 11050 5031d2b435SAndy Adamson 511da177e4SLinus Torvalds struct callback_op { 52f4dac4adSChristoph Hellwig __be32 (*process_op)(void *, void *, struct cb_process_state *); 53f4dac4adSChristoph Hellwig __be32 (*decode_args)(struct svc_rqst *, struct xdr_stream *, void *); 54f4dac4adSChristoph Hellwig __be32 (*encode_res)(struct svc_rqst *, struct xdr_stream *, 55f4dac4adSChristoph Hellwig const void *); 561da177e4SLinus Torvalds long res_maxsize; 571da177e4SLinus Torvalds }; 581da177e4SLinus Torvalds 591da177e4SLinus Torvalds static struct callback_op callback_ops[]; 601da177e4SLinus Torvalds 61a6beb732SChristoph Hellwig static __be32 nfs4_callback_null(struct svc_rqst *rqstp) 621da177e4SLinus Torvalds { 631da177e4SLinus Torvalds return htonl(NFS4_OK); 641da177e4SLinus Torvalds } 651da177e4SLinus Torvalds 66c35a810cSChuck Lever /* 67c35a810cSChuck Lever * svc_process_common() looks for an XDR encoder to know when 68c35a810cSChuck Lever * not to drop a Reply. 69c35a810cSChuck Lever */ 70130e2054SChuck Lever static bool nfs4_encode_void(struct svc_rqst *rqstp, struct xdr_stream *xdr) 711da177e4SLinus Torvalds { 72130e2054SChuck Lever return true; 731da177e4SLinus Torvalds } 741da177e4SLinus Torvalds 75c065eeeaSTrond Myklebust static __be32 decode_string(struct xdr_stream *xdr, unsigned int *len, 76c065eeeaSTrond Myklebust const char **str, size_t maxlen) 771da177e4SLinus Torvalds { 78c065eeeaSTrond Myklebust ssize_t err; 791da177e4SLinus Torvalds 80c065eeeaSTrond Myklebust err = xdr_stream_decode_opaque_inline(xdr, (void **)str, maxlen); 81c065eeeaSTrond Myklebust if (err < 0) 82c065eeeaSTrond Myklebust return cpu_to_be32(NFS4ERR_RESOURCE); 83c065eeeaSTrond Myklebust *len = err; 841da177e4SLinus Torvalds return 0; 851da177e4SLinus Torvalds } 861da177e4SLinus Torvalds 87e6f684f6SAl Viro static __be32 decode_fh(struct xdr_stream *xdr, struct nfs_fh *fh) 881da177e4SLinus Torvalds { 895704fdebSAl Viro __be32 *p; 901da177e4SLinus Torvalds 91eb72f484SChuck Lever p = xdr_inline_decode(xdr, 4); 921da177e4SLinus Torvalds if (unlikely(p == NULL)) 931da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 941da177e4SLinus Torvalds fh->size = ntohl(*p); 951da177e4SLinus Torvalds if (fh->size > NFS4_FHSIZE) 961da177e4SLinus Torvalds return htonl(NFS4ERR_BADHANDLE); 97eb72f484SChuck Lever p = xdr_inline_decode(xdr, fh->size); 981da177e4SLinus Torvalds if (unlikely(p == NULL)) 991da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 1001da177e4SLinus Torvalds memcpy(&fh->data[0], p, fh->size); 1011da177e4SLinus Torvalds memset(&fh->data[fh->size], 0, sizeof(fh->data) - fh->size); 1021da177e4SLinus Torvalds return 0; 1031da177e4SLinus Torvalds } 1041da177e4SLinus Torvalds 105e6f684f6SAl Viro static __be32 decode_bitmap(struct xdr_stream *xdr, uint32_t *bitmap) 1061da177e4SLinus Torvalds { 1075704fdebSAl Viro __be32 *p; 1081da177e4SLinus Torvalds unsigned int attrlen; 1091da177e4SLinus Torvalds 110eb72f484SChuck Lever p = xdr_inline_decode(xdr, 4); 1111da177e4SLinus Torvalds if (unlikely(p == NULL)) 1121da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 1131da177e4SLinus Torvalds attrlen = ntohl(*p); 114eb72f484SChuck Lever p = xdr_inline_decode(xdr, attrlen << 2); 1151da177e4SLinus Torvalds if (unlikely(p == NULL)) 1161da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 1171da177e4SLinus Torvalds if (likely(attrlen > 0)) 1181da177e4SLinus Torvalds bitmap[0] = ntohl(*p++); 1191da177e4SLinus Torvalds if (attrlen > 1) 1201da177e4SLinus Torvalds bitmap[1] = ntohl(*p); 1211da177e4SLinus Torvalds return 0; 1221da177e4SLinus Torvalds } 1231da177e4SLinus Torvalds 124e6f684f6SAl Viro static __be32 decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 1251da177e4SLinus Torvalds { 1265704fdebSAl Viro __be32 *p; 1271da177e4SLinus Torvalds 128eb72f484SChuck Lever p = xdr_inline_decode(xdr, NFS4_STATEID_SIZE); 1291da177e4SLinus Torvalds if (unlikely(p == NULL)) 1301da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 13193b717fdSTrond Myklebust memcpy(stateid->data, p, NFS4_STATEID_SIZE); 1321da177e4SLinus Torvalds return 0; 1331da177e4SLinus Torvalds } 1341da177e4SLinus Torvalds 13593b717fdSTrond Myklebust static __be32 decode_delegation_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 13693b717fdSTrond Myklebust { 13793b717fdSTrond Myklebust stateid->type = NFS4_DELEGATION_STATEID_TYPE; 13893b717fdSTrond Myklebust return decode_stateid(xdr, stateid); 13993b717fdSTrond Myklebust } 14093b717fdSTrond Myklebust 141e6f684f6SAl Viro static __be32 decode_compound_hdr_arg(struct xdr_stream *xdr, struct cb_compound_hdr_arg *hdr) 1421da177e4SLinus Torvalds { 1435704fdebSAl Viro __be32 *p; 144e6f684f6SAl Viro __be32 status; 1451da177e4SLinus Torvalds 146c065eeeaSTrond Myklebust status = decode_string(xdr, &hdr->taglen, &hdr->tag, CB_OP_TAGLEN_MAXSZ); 1471da177e4SLinus Torvalds if (unlikely(status != 0)) 1481da177e4SLinus Torvalds return status; 149eb72f484SChuck Lever p = xdr_inline_decode(xdr, 12); 1501da177e4SLinus Torvalds if (unlikely(p == NULL)) 1511da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 152b8f2ef84SBenny Halevy hdr->minorversion = ntohl(*p++); 153459de2edSBryan Schumaker /* Check for minor version support */ 154459de2edSBryan Schumaker if (hdr->minorversion <= NFS4_MAX_MINOR_VERSION) { 15542c2c424SSteve Dickson hdr->cb_ident = ntohl(*p++); /* ignored by v4.1 and v4.2 */ 15648a9e2d2SBenny Halevy } else { 1579a3ba432STrond Myklebust pr_warn_ratelimited("NFS: %s: NFSv4 server callback with " 158b8f2ef84SBenny Halevy "illegal minor version %u!\n", 159b8f2ef84SBenny Halevy __func__, hdr->minorversion); 1601da177e4SLinus Torvalds return htonl(NFS4ERR_MINOR_VERS_MISMATCH); 1611da177e4SLinus Torvalds } 1621da177e4SLinus Torvalds hdr->nops = ntohl(*p); 1631da177e4SLinus Torvalds return 0; 1641da177e4SLinus Torvalds } 1651da177e4SLinus Torvalds 166e6f684f6SAl Viro static __be32 decode_op_hdr(struct xdr_stream *xdr, unsigned int *op) 1671da177e4SLinus Torvalds { 1685704fdebSAl Viro __be32 *p; 169eb72f484SChuck Lever p = xdr_inline_decode(xdr, 4); 1701da177e4SLinus Torvalds if (unlikely(p == NULL)) 17131d2b435SAndy Adamson return htonl(NFS4ERR_RESOURCE_HDR); 1721da177e4SLinus Torvalds *op = ntohl(*p); 1731da177e4SLinus Torvalds return 0; 1741da177e4SLinus Torvalds } 1751da177e4SLinus Torvalds 176f4dac4adSChristoph Hellwig static __be32 decode_getattr_args(struct svc_rqst *rqstp, 177f4dac4adSChristoph Hellwig struct xdr_stream *xdr, void *argp) 1781da177e4SLinus Torvalds { 179f4dac4adSChristoph Hellwig struct cb_getattrargs *args = argp; 180e6f684f6SAl Viro __be32 status; 1811da177e4SLinus Torvalds 1821da177e4SLinus Torvalds status = decode_fh(xdr, &args->fh); 1831da177e4SLinus Torvalds if (unlikely(status != 0)) 1841da177e4SLinus Torvalds return status; 18556938bb7SAnna Schumaker return decode_bitmap(xdr, args->bitmap); 1861da177e4SLinus Torvalds } 1871da177e4SLinus Torvalds 188f4dac4adSChristoph Hellwig static __be32 decode_recall_args(struct svc_rqst *rqstp, 189f4dac4adSChristoph Hellwig struct xdr_stream *xdr, void *argp) 1901da177e4SLinus Torvalds { 191f4dac4adSChristoph Hellwig struct cb_recallargs *args = argp; 1925704fdebSAl Viro __be32 *p; 193e6f684f6SAl Viro __be32 status; 1941da177e4SLinus Torvalds 19593b717fdSTrond Myklebust status = decode_delegation_stateid(xdr, &args->stateid); 1961da177e4SLinus Torvalds if (unlikely(status != 0)) 1973873bc50SAlexey Dobriyan return status; 198eb72f484SChuck Lever p = xdr_inline_decode(xdr, 4); 199135a4ea0SAnna Schumaker if (unlikely(p == NULL)) 200135a4ea0SAnna Schumaker return htonl(NFS4ERR_RESOURCE); 201135a4ea0SAnna Schumaker args->truncate = ntohl(*p); 202135a4ea0SAnna Schumaker return decode_fh(xdr, &args->fh); 2031da177e4SLinus Torvalds } 2041da177e4SLinus Torvalds 2054aece6a1SBenny Halevy #if defined(CONFIG_NFS_V4_1) 20693b717fdSTrond Myklebust static __be32 decode_layout_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 20793b717fdSTrond Myklebust { 20893b717fdSTrond Myklebust stateid->type = NFS4_LAYOUT_STATEID_TYPE; 20993b717fdSTrond Myklebust return decode_stateid(xdr, stateid); 21093b717fdSTrond Myklebust } 2114aece6a1SBenny Halevy 212f2a62561SFred Isaman static __be32 decode_layoutrecall_args(struct svc_rqst *rqstp, 213f4dac4adSChristoph Hellwig struct xdr_stream *xdr, void *argp) 214f2a62561SFred Isaman { 215f4dac4adSChristoph Hellwig struct cb_layoutrecallargs *args = argp; 216f2a62561SFred Isaman __be32 *p; 217f2a62561SFred Isaman __be32 status = 0; 218f2a62561SFred Isaman uint32_t iomode; 219f2a62561SFred Isaman 220eb72f484SChuck Lever p = xdr_inline_decode(xdr, 4 * sizeof(uint32_t)); 221c79d56d2SAnna Schumaker if (unlikely(p == NULL)) 222c79d56d2SAnna Schumaker return htonl(NFS4ERR_BADXDR); 223f2a62561SFred Isaman 224f2a62561SFred Isaman args->cbl_layout_type = ntohl(*p++); 225f2a62561SFred Isaman /* Depite the spec's xdr, iomode really belongs in the FILE switch, 22625985edcSLucas De Marchi * as it is unusable and ignored with the other types. 227f2a62561SFred Isaman */ 228f2a62561SFred Isaman iomode = ntohl(*p++); 229f2a62561SFred Isaman args->cbl_layoutchanged = ntohl(*p++); 230f2a62561SFred Isaman args->cbl_recall_type = ntohl(*p++); 231f2a62561SFred Isaman 232f2a62561SFred Isaman if (args->cbl_recall_type == RETURN_FILE) { 233f2a62561SFred Isaman args->cbl_range.iomode = iomode; 234f2a62561SFred Isaman status = decode_fh(xdr, &args->cbl_fh); 235f2a62561SFred Isaman if (unlikely(status != 0)) 236c79d56d2SAnna Schumaker return status; 237f2a62561SFred Isaman 238eb72f484SChuck Lever p = xdr_inline_decode(xdr, 2 * sizeof(uint64_t)); 239c79d56d2SAnna Schumaker if (unlikely(p == NULL)) 240c79d56d2SAnna Schumaker return htonl(NFS4ERR_BADXDR); 241f2a62561SFred Isaman p = xdr_decode_hyper(p, &args->cbl_range.offset); 242f2a62561SFred Isaman p = xdr_decode_hyper(p, &args->cbl_range.length); 243c79d56d2SAnna Schumaker return decode_layout_stateid(xdr, &args->cbl_stateid); 244f2a62561SFred Isaman } else if (args->cbl_recall_type == RETURN_FSID) { 245eb72f484SChuck Lever p = xdr_inline_decode(xdr, 2 * sizeof(uint64_t)); 246c79d56d2SAnna Schumaker if (unlikely(p == NULL)) 247c79d56d2SAnna Schumaker return htonl(NFS4ERR_BADXDR); 248f2a62561SFred Isaman p = xdr_decode_hyper(p, &args->cbl_fsid.major); 249f2a62561SFred Isaman p = xdr_decode_hyper(p, &args->cbl_fsid.minor); 250c79d56d2SAnna Schumaker } else if (args->cbl_recall_type != RETURN_ALL) 251c79d56d2SAnna Schumaker return htonl(NFS4ERR_BADXDR); 252c79d56d2SAnna Schumaker return 0; 253f2a62561SFred Isaman } 254f2a62561SFred Isaman 2551be5683bSMarc Eshel static 2561be5683bSMarc Eshel __be32 decode_devicenotify_args(struct svc_rqst *rqstp, 2571be5683bSMarc Eshel struct xdr_stream *xdr, 258f4dac4adSChristoph Hellwig void *argp) 2591be5683bSMarc Eshel { 260f4dac4adSChristoph Hellwig struct cb_devicenotifyargs *args = argp; 261b05bf5c6STrond Myklebust uint32_t tmp, n, i; 2621be5683bSMarc Eshel __be32 *p; 2631be5683bSMarc Eshel __be32 status = 0; 2641be5683bSMarc Eshel 2651be5683bSMarc Eshel /* Num of device notifications */ 266eb72f484SChuck Lever p = xdr_inline_decode(xdr, sizeof(uint32_t)); 2671be5683bSMarc Eshel if (unlikely(p == NULL)) { 2681be5683bSMarc Eshel status = htonl(NFS4ERR_BADXDR); 2691be5683bSMarc Eshel goto out; 2701be5683bSMarc Eshel } 2711be5683bSMarc Eshel n = ntohl(*p++); 272b05bf5c6STrond Myklebust if (n == 0) 2731be5683bSMarc Eshel goto out; 2741be5683bSMarc Eshel 275a4f743a6STrond Myklebust args->devs = kmalloc_array(n, sizeof(*args->devs), GFP_KERNEL); 2761be5683bSMarc Eshel if (!args->devs) { 2771be5683bSMarc Eshel status = htonl(NFS4ERR_DELAY); 2781be5683bSMarc Eshel goto out; 2791be5683bSMarc Eshel } 2801be5683bSMarc Eshel 2811be5683bSMarc Eshel /* Decode each dev notification */ 2821be5683bSMarc Eshel for (i = 0; i < n; i++) { 2831be5683bSMarc Eshel struct cb_devicenotifyitem *dev = &args->devs[i]; 2841be5683bSMarc Eshel 285eb72f484SChuck Lever p = xdr_inline_decode(xdr, (4 * sizeof(uint32_t)) + 286eb72f484SChuck Lever NFS4_DEVICEID4_SIZE); 2871be5683bSMarc Eshel if (unlikely(p == NULL)) { 2881be5683bSMarc Eshel status = htonl(NFS4ERR_BADXDR); 2891be5683bSMarc Eshel goto err; 2901be5683bSMarc Eshel } 2911be5683bSMarc Eshel 2921be5683bSMarc Eshel tmp = ntohl(*p++); /* bitmap size */ 2931be5683bSMarc Eshel if (tmp != 1) { 2941be5683bSMarc Eshel status = htonl(NFS4ERR_INVAL); 2951be5683bSMarc Eshel goto err; 2961be5683bSMarc Eshel } 2971be5683bSMarc Eshel dev->cbd_notify_type = ntohl(*p++); 2981be5683bSMarc Eshel if (dev->cbd_notify_type != NOTIFY_DEVICEID4_CHANGE && 2991be5683bSMarc Eshel dev->cbd_notify_type != NOTIFY_DEVICEID4_DELETE) { 3001be5683bSMarc Eshel status = htonl(NFS4ERR_INVAL); 3011be5683bSMarc Eshel goto err; 3021be5683bSMarc Eshel } 3031be5683bSMarc Eshel 3041be5683bSMarc Eshel tmp = ntohl(*p++); /* opaque size */ 3051be5683bSMarc Eshel if (((dev->cbd_notify_type == NOTIFY_DEVICEID4_CHANGE) && 3061be5683bSMarc Eshel (tmp != NFS4_DEVICEID4_SIZE + 8)) || 3071be5683bSMarc Eshel ((dev->cbd_notify_type == NOTIFY_DEVICEID4_DELETE) && 3081be5683bSMarc Eshel (tmp != NFS4_DEVICEID4_SIZE + 4))) { 3091be5683bSMarc Eshel status = htonl(NFS4ERR_INVAL); 3101be5683bSMarc Eshel goto err; 3111be5683bSMarc Eshel } 3121be5683bSMarc Eshel dev->cbd_layout_type = ntohl(*p++); 3131be5683bSMarc Eshel memcpy(dev->cbd_dev_id.data, p, NFS4_DEVICEID4_SIZE); 3141be5683bSMarc Eshel p += XDR_QUADLEN(NFS4_DEVICEID4_SIZE); 3151be5683bSMarc Eshel 3161be5683bSMarc Eshel if (dev->cbd_layout_type == NOTIFY_DEVICEID4_CHANGE) { 317eb72f484SChuck Lever p = xdr_inline_decode(xdr, sizeof(uint32_t)); 3181be5683bSMarc Eshel if (unlikely(p == NULL)) { 3191be5683bSMarc Eshel status = htonl(NFS4ERR_BADXDR); 3201be5683bSMarc Eshel goto err; 3211be5683bSMarc Eshel } 3221be5683bSMarc Eshel dev->cbd_immediate = ntohl(*p++); 3231be5683bSMarc Eshel } else { 3241be5683bSMarc Eshel dev->cbd_immediate = 0; 3251be5683bSMarc Eshel } 3261be5683bSMarc Eshel 3271be5683bSMarc Eshel dprintk("%s: type %d layout 0x%x immediate %d\n", 3281be5683bSMarc Eshel __func__, dev->cbd_notify_type, dev->cbd_layout_type, 3291be5683bSMarc Eshel dev->cbd_immediate); 3301be5683bSMarc Eshel } 331b05bf5c6STrond Myklebust args->ndevs = n; 332b05bf5c6STrond Myklebust dprintk("%s: ndevs %d\n", __func__, args->ndevs); 333b05bf5c6STrond Myklebust return 0; 334b05bf5c6STrond Myklebust err: 335b05bf5c6STrond Myklebust kfree(args->devs); 3361be5683bSMarc Eshel out: 337b05bf5c6STrond Myklebust args->devs = NULL; 338b05bf5c6STrond Myklebust args->ndevs = 0; 3391be5683bSMarc Eshel dprintk("%s: status %d ndevs %d\n", 3401be5683bSMarc Eshel __func__, ntohl(status), args->ndevs); 3411be5683bSMarc Eshel return status; 3421be5683bSMarc Eshel } 3431be5683bSMarc Eshel 3449733f0d9SAndy Adamson static __be32 decode_sessionid(struct xdr_stream *xdr, 3454aece6a1SBenny Halevy struct nfs4_sessionid *sid) 3464aece6a1SBenny Halevy { 3479733f0d9SAndy Adamson __be32 *p; 3484aece6a1SBenny Halevy 349eb72f484SChuck Lever p = xdr_inline_decode(xdr, NFS4_MAX_SESSIONID_LEN); 3504aece6a1SBenny Halevy if (unlikely(p == NULL)) 351a419aef8SJoe Perches return htonl(NFS4ERR_RESOURCE); 3524aece6a1SBenny Halevy 353590184a6SKinglong Mee memcpy(sid->data, p, NFS4_MAX_SESSIONID_LEN); 3544aece6a1SBenny Halevy return 0; 3554aece6a1SBenny Halevy } 3564aece6a1SBenny Halevy 3579733f0d9SAndy Adamson static __be32 decode_rc_list(struct xdr_stream *xdr, 3584aece6a1SBenny Halevy struct referring_call_list *rc_list) 3594aece6a1SBenny Halevy { 3609733f0d9SAndy Adamson __be32 *p; 3614aece6a1SBenny Halevy int i; 3629733f0d9SAndy Adamson __be32 status; 3634aece6a1SBenny Halevy 3644aece6a1SBenny Halevy status = decode_sessionid(xdr, &rc_list->rcl_sessionid); 3654aece6a1SBenny Halevy if (status) 3664aece6a1SBenny Halevy goto out; 3674aece6a1SBenny Halevy 3684aece6a1SBenny Halevy status = htonl(NFS4ERR_RESOURCE); 369eb72f484SChuck Lever p = xdr_inline_decode(xdr, sizeof(uint32_t)); 3704aece6a1SBenny Halevy if (unlikely(p == NULL)) 3714aece6a1SBenny Halevy goto out; 3724aece6a1SBenny Halevy 3734aece6a1SBenny Halevy rc_list->rcl_nrefcalls = ntohl(*p++); 3744aece6a1SBenny Halevy if (rc_list->rcl_nrefcalls) { 375eb72f484SChuck Lever p = xdr_inline_decode(xdr, 3764aece6a1SBenny Halevy rc_list->rcl_nrefcalls * 2 * sizeof(uint32_t)); 3774aece6a1SBenny Halevy if (unlikely(p == NULL)) 3784aece6a1SBenny Halevy goto out; 379a4f743a6STrond Myklebust rc_list->rcl_refcalls = kmalloc_array(rc_list->rcl_nrefcalls, 3804aece6a1SBenny Halevy sizeof(*rc_list->rcl_refcalls), 3814aece6a1SBenny Halevy GFP_KERNEL); 3824aece6a1SBenny Halevy if (unlikely(rc_list->rcl_refcalls == NULL)) 3834aece6a1SBenny Halevy goto out; 3844aece6a1SBenny Halevy for (i = 0; i < rc_list->rcl_nrefcalls; i++) { 3854aece6a1SBenny Halevy rc_list->rcl_refcalls[i].rc_sequenceid = ntohl(*p++); 3864aece6a1SBenny Halevy rc_list->rcl_refcalls[i].rc_slotid = ntohl(*p++); 3874aece6a1SBenny Halevy } 3884aece6a1SBenny Halevy } 3894aece6a1SBenny Halevy status = 0; 3904aece6a1SBenny Halevy 3914aece6a1SBenny Halevy out: 3924aece6a1SBenny Halevy return status; 3934aece6a1SBenny Halevy } 3944aece6a1SBenny Halevy 3959733f0d9SAndy Adamson static __be32 decode_cb_sequence_args(struct svc_rqst *rqstp, 3964aece6a1SBenny Halevy struct xdr_stream *xdr, 397f4dac4adSChristoph Hellwig void *argp) 3984aece6a1SBenny Halevy { 399f4dac4adSChristoph Hellwig struct cb_sequenceargs *args = argp; 4009733f0d9SAndy Adamson __be32 *p; 4014aece6a1SBenny Halevy int i; 4029733f0d9SAndy Adamson __be32 status; 4034aece6a1SBenny Halevy 4044aece6a1SBenny Halevy status = decode_sessionid(xdr, &args->csa_sessionid); 4054aece6a1SBenny Halevy if (status) 4061796549aSAnna Schumaker return status; 4074aece6a1SBenny Halevy 408eb72f484SChuck Lever p = xdr_inline_decode(xdr, 5 * sizeof(uint32_t)); 4094aece6a1SBenny Halevy if (unlikely(p == NULL)) 4101796549aSAnna Schumaker return htonl(NFS4ERR_RESOURCE); 4114aece6a1SBenny Halevy 41265fc64e5SRicardo Labiaga args->csa_addr = svc_addr(rqstp); 4134aece6a1SBenny Halevy args->csa_sequenceid = ntohl(*p++); 4144aece6a1SBenny Halevy args->csa_slotid = ntohl(*p++); 4154aece6a1SBenny Halevy args->csa_highestslotid = ntohl(*p++); 4164aece6a1SBenny Halevy args->csa_cachethis = ntohl(*p++); 4174aece6a1SBenny Halevy args->csa_nrclists = ntohl(*p++); 4184aece6a1SBenny Halevy args->csa_rclists = NULL; 4194aece6a1SBenny Halevy if (args->csa_nrclists) { 4200439f31cSDan Carpenter args->csa_rclists = kmalloc_array(args->csa_nrclists, 4214aece6a1SBenny Halevy sizeof(*args->csa_rclists), 4224aece6a1SBenny Halevy GFP_KERNEL); 4234aece6a1SBenny Halevy if (unlikely(args->csa_rclists == NULL)) 4241796549aSAnna Schumaker return htonl(NFS4ERR_RESOURCE); 4254aece6a1SBenny Halevy 4264aece6a1SBenny Halevy for (i = 0; i < args->csa_nrclists; i++) { 4274aece6a1SBenny Halevy status = decode_rc_list(xdr, &args->csa_rclists[i]); 428d8ba1f97STrond Myklebust if (status) { 429d8ba1f97STrond Myklebust args->csa_nrclists = i; 4304aece6a1SBenny Halevy goto out_free; 4314aece6a1SBenny Halevy } 4324aece6a1SBenny Halevy } 433d8ba1f97STrond Myklebust } 4341796549aSAnna Schumaker return 0; 4354aece6a1SBenny Halevy 4364aece6a1SBenny Halevy out_free: 4374aece6a1SBenny Halevy for (i = 0; i < args->csa_nrclists; i++) 4384aece6a1SBenny Halevy kfree(args->csa_rclists[i].rcl_refcalls); 4394aece6a1SBenny Halevy kfree(args->csa_rclists); 4401796549aSAnna Schumaker return status; 4414aece6a1SBenny Halevy } 4424aece6a1SBenny Halevy 4439733f0d9SAndy Adamson static __be32 decode_recallany_args(struct svc_rqst *rqstp, 44431f09607SAlexandros Batsakis struct xdr_stream *xdr, 445f4dac4adSChristoph Hellwig void *argp) 44631f09607SAlexandros Batsakis { 447f4dac4adSChristoph Hellwig struct cb_recallanyargs *args = argp; 448d743c3c9SPeng Tao uint32_t bitmap[2]; 449d743c3c9SPeng Tao __be32 *p, status; 45031f09607SAlexandros Batsakis 451eb72f484SChuck Lever p = xdr_inline_decode(xdr, 4); 45231f09607SAlexandros Batsakis if (unlikely(p == NULL)) 45331f09607SAlexandros Batsakis return htonl(NFS4ERR_BADXDR); 45431f09607SAlexandros Batsakis args->craa_objs_to_keep = ntohl(*p++); 455d743c3c9SPeng Tao status = decode_bitmap(xdr, bitmap); 456d743c3c9SPeng Tao if (unlikely(status)) 457d743c3c9SPeng Tao return status; 458d743c3c9SPeng Tao args->craa_type_mask = bitmap[0]; 45931f09607SAlexandros Batsakis 46031f09607SAlexandros Batsakis return 0; 46131f09607SAlexandros Batsakis } 46231f09607SAlexandros Batsakis 4639733f0d9SAndy Adamson static __be32 decode_recallslot_args(struct svc_rqst *rqstp, 464b9efa1b2SAndy Adamson struct xdr_stream *xdr, 465f4dac4adSChristoph Hellwig void *argp) 466b9efa1b2SAndy Adamson { 467f4dac4adSChristoph Hellwig struct cb_recallslotargs *args = argp; 468b9efa1b2SAndy Adamson __be32 *p; 469b9efa1b2SAndy Adamson 470eb72f484SChuck Lever p = xdr_inline_decode(xdr, 4); 471b9efa1b2SAndy Adamson if (unlikely(p == NULL)) 472b9efa1b2SAndy Adamson return htonl(NFS4ERR_BADXDR); 473d5fb4ce3STrond Myklebust args->crsa_target_highest_slotid = ntohl(*p++); 474b9efa1b2SAndy Adamson return 0; 475b9efa1b2SAndy Adamson } 476b9efa1b2SAndy Adamson 477db783688SJeff Layton static __be32 decode_lockowner(struct xdr_stream *xdr, struct cb_notify_lock_args *args) 478db783688SJeff Layton { 479db783688SJeff Layton __be32 *p; 480db783688SJeff Layton unsigned int len; 481db783688SJeff Layton 482eb72f484SChuck Lever p = xdr_inline_decode(xdr, 12); 483db783688SJeff Layton if (unlikely(p == NULL)) 484db783688SJeff Layton return htonl(NFS4ERR_BADXDR); 485db783688SJeff Layton 486db783688SJeff Layton p = xdr_decode_hyper(p, &args->cbnl_owner.clientid); 487db783688SJeff Layton len = be32_to_cpu(*p); 488db783688SJeff Layton 489eb72f484SChuck Lever p = xdr_inline_decode(xdr, len); 490db783688SJeff Layton if (unlikely(p == NULL)) 491db783688SJeff Layton return htonl(NFS4ERR_BADXDR); 492db783688SJeff Layton 493db783688SJeff Layton /* Only try to decode if the length is right */ 494db783688SJeff Layton if (len == 20) { 495db783688SJeff Layton p += 2; /* skip "lock id:" */ 496db783688SJeff Layton args->cbnl_owner.s_dev = be32_to_cpu(*p++); 497db783688SJeff Layton xdr_decode_hyper(p, &args->cbnl_owner.id); 498db783688SJeff Layton args->cbnl_valid = true; 499db783688SJeff Layton } else { 500db783688SJeff Layton args->cbnl_owner.s_dev = 0; 501db783688SJeff Layton args->cbnl_owner.id = 0; 502db783688SJeff Layton args->cbnl_valid = false; 503db783688SJeff Layton } 504db783688SJeff Layton return 0; 505db783688SJeff Layton } 506db783688SJeff Layton 507f4dac4adSChristoph Hellwig static __be32 decode_notify_lock_args(struct svc_rqst *rqstp, 508f4dac4adSChristoph Hellwig struct xdr_stream *xdr, void *argp) 509db783688SJeff Layton { 510f4dac4adSChristoph Hellwig struct cb_notify_lock_args *args = argp; 511db783688SJeff Layton __be32 status; 512db783688SJeff Layton 513db783688SJeff Layton status = decode_fh(xdr, &args->cbnl_fh); 514db783688SJeff Layton if (unlikely(status != 0)) 515db783688SJeff Layton return status; 516535ece2bSAnna Schumaker return decode_lockowner(xdr, args); 517db783688SJeff Layton } 518db783688SJeff Layton 5194aece6a1SBenny Halevy #endif /* CONFIG_NFS_V4_1 */ 5205178a125SOlga Kornievskaia #ifdef CONFIG_NFS_V4_2 5215178a125SOlga Kornievskaia static __be32 decode_write_response(struct xdr_stream *xdr, 5225178a125SOlga Kornievskaia struct cb_offloadargs *args) 5235178a125SOlga Kornievskaia { 5245178a125SOlga Kornievskaia __be32 *p; 5254aece6a1SBenny Halevy 5265178a125SOlga Kornievskaia /* skip the always zero field */ 527eb72f484SChuck Lever p = xdr_inline_decode(xdr, 4); 5285178a125SOlga Kornievskaia if (unlikely(!p)) 5295178a125SOlga Kornievskaia goto out; 5305178a125SOlga Kornievskaia p++; 5315178a125SOlga Kornievskaia 5325178a125SOlga Kornievskaia /* decode count, stable_how, verifier */ 5335178a125SOlga Kornievskaia p = xdr_inline_decode(xdr, 8 + 4); 5345178a125SOlga Kornievskaia if (unlikely(!p)) 5355178a125SOlga Kornievskaia goto out; 5365178a125SOlga Kornievskaia p = xdr_decode_hyper(p, &args->wr_count); 5375178a125SOlga Kornievskaia args->wr_writeverf.committed = be32_to_cpup(p); 5385178a125SOlga Kornievskaia p = xdr_inline_decode(xdr, NFS4_VERIFIER_SIZE); 5395178a125SOlga Kornievskaia if (likely(p)) { 5405178a125SOlga Kornievskaia memcpy(&args->wr_writeverf.verifier.data[0], p, 5415178a125SOlga Kornievskaia NFS4_VERIFIER_SIZE); 5425178a125SOlga Kornievskaia return 0; 5435178a125SOlga Kornievskaia } 5445178a125SOlga Kornievskaia out: 5455178a125SOlga Kornievskaia return htonl(NFS4ERR_RESOURCE); 5465178a125SOlga Kornievskaia } 5475178a125SOlga Kornievskaia 5485178a125SOlga Kornievskaia static __be32 decode_offload_args(struct svc_rqst *rqstp, 5495178a125SOlga Kornievskaia struct xdr_stream *xdr, 5505178a125SOlga Kornievskaia void *data) 5515178a125SOlga Kornievskaia { 5525178a125SOlga Kornievskaia struct cb_offloadargs *args = data; 5535178a125SOlga Kornievskaia __be32 *p; 5545178a125SOlga Kornievskaia __be32 status; 5555178a125SOlga Kornievskaia 5565178a125SOlga Kornievskaia /* decode fh */ 5575178a125SOlga Kornievskaia status = decode_fh(xdr, &args->coa_fh); 5585178a125SOlga Kornievskaia if (unlikely(status != 0)) 5595178a125SOlga Kornievskaia return status; 5605178a125SOlga Kornievskaia 5615178a125SOlga Kornievskaia /* decode stateid */ 5625178a125SOlga Kornievskaia status = decode_stateid(xdr, &args->coa_stateid); 5635178a125SOlga Kornievskaia if (unlikely(status != 0)) 5645178a125SOlga Kornievskaia return status; 5655178a125SOlga Kornievskaia 5665178a125SOlga Kornievskaia /* decode status */ 567eb72f484SChuck Lever p = xdr_inline_decode(xdr, 4); 5685178a125SOlga Kornievskaia if (unlikely(!p)) 5695178a125SOlga Kornievskaia goto out; 5705178a125SOlga Kornievskaia args->error = ntohl(*p++); 5715178a125SOlga Kornievskaia if (!args->error) { 5725178a125SOlga Kornievskaia status = decode_write_response(xdr, args); 5735178a125SOlga Kornievskaia if (unlikely(status != 0)) 5745178a125SOlga Kornievskaia return status; 5755178a125SOlga Kornievskaia } else { 5765178a125SOlga Kornievskaia p = xdr_inline_decode(xdr, 8); 5775178a125SOlga Kornievskaia if (unlikely(!p)) 5785178a125SOlga Kornievskaia goto out; 5795178a125SOlga Kornievskaia p = xdr_decode_hyper(p, &args->wr_count); 5805178a125SOlga Kornievskaia } 5815178a125SOlga Kornievskaia return 0; 5825178a125SOlga Kornievskaia out: 5835178a125SOlga Kornievskaia return htonl(NFS4ERR_RESOURCE); 5845178a125SOlga Kornievskaia } 5855178a125SOlga Kornievskaia #endif /* CONFIG_NFS_V4_2 */ 586e6f684f6SAl Viro static __be32 encode_string(struct xdr_stream *xdr, unsigned int len, const char *str) 5871da177e4SLinus Torvalds { 588ab6e9aafSTrond Myklebust if (unlikely(xdr_stream_encode_opaque(xdr, str, len) < 0)) 589ab6e9aafSTrond Myklebust return cpu_to_be32(NFS4ERR_RESOURCE); 5901da177e4SLinus Torvalds return 0; 5911da177e4SLinus Torvalds } 5921da177e4SLinus Torvalds 5938b064946STrond Myklebust static __be32 encode_attr_bitmap(struct xdr_stream *xdr, const uint32_t *bitmap, size_t sz) 5941da177e4SLinus Torvalds { 5958b064946STrond Myklebust if (xdr_stream_encode_uint32_array(xdr, bitmap, sz) < 0) 5968b064946STrond Myklebust return cpu_to_be32(NFS4ERR_RESOURCE); 5971da177e4SLinus Torvalds return 0; 5981da177e4SLinus Torvalds } 5991da177e4SLinus Torvalds 600e6f684f6SAl Viro static __be32 encode_attr_change(struct xdr_stream *xdr, const uint32_t *bitmap, uint64_t change) 6011da177e4SLinus Torvalds { 6025704fdebSAl Viro __be32 *p; 6031da177e4SLinus Torvalds 6041da177e4SLinus Torvalds if (!(bitmap[0] & FATTR4_WORD0_CHANGE)) 6051da177e4SLinus Torvalds return 0; 6061da177e4SLinus Torvalds p = xdr_reserve_space(xdr, 8); 60790dc7d27SHarvey Harrison if (unlikely(!p)) 6081da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 6091da177e4SLinus Torvalds p = xdr_encode_hyper(p, change); 6101da177e4SLinus Torvalds return 0; 6111da177e4SLinus Torvalds } 6121da177e4SLinus Torvalds 613e6f684f6SAl Viro static __be32 encode_attr_size(struct xdr_stream *xdr, const uint32_t *bitmap, uint64_t size) 6141da177e4SLinus Torvalds { 6155704fdebSAl Viro __be32 *p; 6161da177e4SLinus Torvalds 6171da177e4SLinus Torvalds if (!(bitmap[0] & FATTR4_WORD0_SIZE)) 6181da177e4SLinus Torvalds return 0; 6191da177e4SLinus Torvalds p = xdr_reserve_space(xdr, 8); 62090dc7d27SHarvey Harrison if (unlikely(!p)) 6211da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 6221da177e4SLinus Torvalds p = xdr_encode_hyper(p, size); 6231da177e4SLinus Torvalds return 0; 6241da177e4SLinus Torvalds } 6251da177e4SLinus Torvalds 6267d34ff51STrond Myklebust static __be32 encode_attr_time(struct xdr_stream *xdr, const struct timespec64 *time) 6271da177e4SLinus Torvalds { 6285704fdebSAl Viro __be32 *p; 6291da177e4SLinus Torvalds 6301da177e4SLinus Torvalds p = xdr_reserve_space(xdr, 12); 63190dc7d27SHarvey Harrison if (unlikely(!p)) 6321da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 6331da177e4SLinus Torvalds p = xdr_encode_hyper(p, time->tv_sec); 6341da177e4SLinus Torvalds *p = htonl(time->tv_nsec); 6351da177e4SLinus Torvalds return 0; 6361da177e4SLinus Torvalds } 6371da177e4SLinus Torvalds 6387d34ff51STrond Myklebust static __be32 encode_attr_ctime(struct xdr_stream *xdr, const uint32_t *bitmap, const struct timespec64 *time) 6391da177e4SLinus Torvalds { 6401da177e4SLinus Torvalds if (!(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) 6411da177e4SLinus Torvalds return 0; 6421da177e4SLinus Torvalds return encode_attr_time(xdr,time); 6431da177e4SLinus Torvalds } 6441da177e4SLinus Torvalds 6457d34ff51STrond Myklebust static __be32 encode_attr_mtime(struct xdr_stream *xdr, const uint32_t *bitmap, const struct timespec64 *time) 6461da177e4SLinus Torvalds { 6471da177e4SLinus Torvalds if (!(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) 6481da177e4SLinus Torvalds return 0; 6491da177e4SLinus Torvalds return encode_attr_time(xdr,time); 6501da177e4SLinus Torvalds } 6511da177e4SLinus Torvalds 652e6f684f6SAl Viro static __be32 encode_compound_hdr_res(struct xdr_stream *xdr, struct cb_compound_hdr_res *hdr) 6531da177e4SLinus Torvalds { 654e6f684f6SAl Viro __be32 status; 6551da177e4SLinus Torvalds 6561da177e4SLinus Torvalds hdr->status = xdr_reserve_space(xdr, 4); 6571da177e4SLinus Torvalds if (unlikely(hdr->status == NULL)) 6581da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 6591da177e4SLinus Torvalds status = encode_string(xdr, hdr->taglen, hdr->tag); 6601da177e4SLinus Torvalds if (unlikely(status != 0)) 6611da177e4SLinus Torvalds return status; 6621da177e4SLinus Torvalds hdr->nops = xdr_reserve_space(xdr, 4); 6631da177e4SLinus Torvalds if (unlikely(hdr->nops == NULL)) 6641da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 6651da177e4SLinus Torvalds return 0; 6661da177e4SLinus Torvalds } 6671da177e4SLinus Torvalds 668e6f684f6SAl Viro static __be32 encode_op_hdr(struct xdr_stream *xdr, uint32_t op, __be32 res) 6691da177e4SLinus Torvalds { 6705704fdebSAl Viro __be32 *p; 6711da177e4SLinus Torvalds 6721da177e4SLinus Torvalds p = xdr_reserve_space(xdr, 8); 6731da177e4SLinus Torvalds if (unlikely(p == NULL)) 67431d2b435SAndy Adamson return htonl(NFS4ERR_RESOURCE_HDR); 6751da177e4SLinus Torvalds *p++ = htonl(op); 6761da177e4SLinus Torvalds *p = res; 6771da177e4SLinus Torvalds return 0; 6781da177e4SLinus Torvalds } 6791da177e4SLinus Torvalds 680f4dac4adSChristoph Hellwig static __be32 encode_getattr_res(struct svc_rqst *rqstp, struct xdr_stream *xdr, 681f4dac4adSChristoph Hellwig const void *resp) 6821da177e4SLinus Torvalds { 683f4dac4adSChristoph Hellwig const struct cb_getattrres *res = resp; 6845704fdebSAl Viro __be32 *savep = NULL; 685e6f684f6SAl Viro __be32 status = res->status; 6861da177e4SLinus Torvalds 6871da177e4SLinus Torvalds if (unlikely(status != 0)) 6881da177e4SLinus Torvalds goto out; 6898b064946STrond Myklebust status = encode_attr_bitmap(xdr, res->bitmap, ARRAY_SIZE(res->bitmap)); 6901da177e4SLinus Torvalds if (unlikely(status != 0)) 6911da177e4SLinus Torvalds goto out; 6928b064946STrond Myklebust status = cpu_to_be32(NFS4ERR_RESOURCE); 6938b064946STrond Myklebust savep = xdr_reserve_space(xdr, sizeof(*savep)); 6948b064946STrond Myklebust if (unlikely(!savep)) 6958b064946STrond Myklebust goto out; 6961da177e4SLinus Torvalds status = encode_attr_change(xdr, res->bitmap, res->change_attr); 6971da177e4SLinus Torvalds if (unlikely(status != 0)) 6981da177e4SLinus Torvalds goto out; 6991da177e4SLinus Torvalds status = encode_attr_size(xdr, res->bitmap, res->size); 7001da177e4SLinus Torvalds if (unlikely(status != 0)) 7011da177e4SLinus Torvalds goto out; 7021da177e4SLinus Torvalds status = encode_attr_ctime(xdr, res->bitmap, &res->ctime); 7031da177e4SLinus Torvalds if (unlikely(status != 0)) 7041da177e4SLinus Torvalds goto out; 7051da177e4SLinus Torvalds status = encode_attr_mtime(xdr, res->bitmap, &res->mtime); 7061da177e4SLinus Torvalds *savep = htonl((unsigned int)((char *)xdr->p - (char *)(savep+1))); 7071da177e4SLinus Torvalds out: 7081da177e4SLinus Torvalds return status; 7091da177e4SLinus Torvalds } 7101da177e4SLinus Torvalds 71134bc47c9SBenny Halevy #if defined(CONFIG_NFS_V4_1) 71234bc47c9SBenny Halevy 7139733f0d9SAndy Adamson static __be32 encode_sessionid(struct xdr_stream *xdr, 7144aece6a1SBenny Halevy const struct nfs4_sessionid *sid) 7154aece6a1SBenny Halevy { 7169733f0d9SAndy Adamson __be32 *p; 7174aece6a1SBenny Halevy 718590184a6SKinglong Mee p = xdr_reserve_space(xdr, NFS4_MAX_SESSIONID_LEN); 7194aece6a1SBenny Halevy if (unlikely(p == NULL)) 7204aece6a1SBenny Halevy return htonl(NFS4ERR_RESOURCE); 7214aece6a1SBenny Halevy 722590184a6SKinglong Mee memcpy(p, sid, NFS4_MAX_SESSIONID_LEN); 7234aece6a1SBenny Halevy return 0; 7244aece6a1SBenny Halevy } 7254aece6a1SBenny Halevy 7269733f0d9SAndy Adamson static __be32 encode_cb_sequence_res(struct svc_rqst *rqstp, 7274aece6a1SBenny Halevy struct xdr_stream *xdr, 728f4dac4adSChristoph Hellwig const void *resp) 7294aece6a1SBenny Halevy { 730f4dac4adSChristoph Hellwig const struct cb_sequenceres *res = resp; 7319733f0d9SAndy Adamson __be32 *p; 732e216c8c7SDan Carpenter __be32 status = res->csr_status; 7334aece6a1SBenny Halevy 7344aece6a1SBenny Halevy if (unlikely(status != 0)) 7353d0bfaa6SAnna Schumaker return status; 7364aece6a1SBenny Halevy 737e0a63c0bSKinglong Mee status = encode_sessionid(xdr, &res->csr_sessionid); 738e0a63c0bSKinglong Mee if (status) 7393d0bfaa6SAnna Schumaker return status; 7404aece6a1SBenny Halevy 7414aece6a1SBenny Halevy p = xdr_reserve_space(xdr, 4 * sizeof(uint32_t)); 7424aece6a1SBenny Halevy if (unlikely(p == NULL)) 7434aece6a1SBenny Halevy return htonl(NFS4ERR_RESOURCE); 7444aece6a1SBenny Halevy 7454aece6a1SBenny Halevy *p++ = htonl(res->csr_sequenceid); 7464aece6a1SBenny Halevy *p++ = htonl(res->csr_slotid); 7474aece6a1SBenny Halevy *p++ = htonl(res->csr_highestslotid); 7484aece6a1SBenny Halevy *p++ = htonl(res->csr_target_highestslotid); 7493d0bfaa6SAnna Schumaker return 0; 7504aece6a1SBenny Halevy } 7514aece6a1SBenny Halevy 75234bc47c9SBenny Halevy static __be32 75334bc47c9SBenny Halevy preprocess_nfs41_op(int nop, unsigned int op_nr, struct callback_op **op) 75434bc47c9SBenny Halevy { 755281fe15dSBenny Halevy if (op_nr == OP_CB_SEQUENCE) { 756281fe15dSBenny Halevy if (nop != 0) 757281fe15dSBenny Halevy return htonl(NFS4ERR_SEQUENCE_POS); 758281fe15dSBenny Halevy } else { 759281fe15dSBenny Halevy if (nop == 0) 760281fe15dSBenny Halevy return htonl(NFS4ERR_OP_NOT_IN_SESSION); 761281fe15dSBenny Halevy } 762281fe15dSBenny Halevy 76334bc47c9SBenny Halevy switch (op_nr) { 76434bc47c9SBenny Halevy case OP_CB_GETATTR: 76534bc47c9SBenny Halevy case OP_CB_RECALL: 7664aece6a1SBenny Halevy case OP_CB_SEQUENCE: 76731f09607SAlexandros Batsakis case OP_CB_RECALL_ANY: 768b9efa1b2SAndy Adamson case OP_CB_RECALL_SLOT: 769f2a62561SFred Isaman case OP_CB_LAYOUTRECALL: 7701be5683bSMarc Eshel case OP_CB_NOTIFY_DEVICEID: 771db783688SJeff Layton case OP_CB_NOTIFY_LOCK: 77234bc47c9SBenny Halevy *op = &callback_ops[op_nr]; 77334bc47c9SBenny Halevy break; 77434bc47c9SBenny Halevy 77534bc47c9SBenny Halevy case OP_CB_NOTIFY: 77634bc47c9SBenny Halevy case OP_CB_PUSH_DELEG: 77734bc47c9SBenny Halevy case OP_CB_RECALLABLE_OBJ_AVAIL: 77834bc47c9SBenny Halevy case OP_CB_WANTS_CANCELLED: 77934bc47c9SBenny Halevy return htonl(NFS4ERR_NOTSUPP); 78034bc47c9SBenny Halevy 78134bc47c9SBenny Halevy default: 78234bc47c9SBenny Halevy return htonl(NFS4ERR_OP_ILLEGAL); 78334bc47c9SBenny Halevy } 78434bc47c9SBenny Halevy 78534bc47c9SBenny Halevy return htonl(NFS_OK); 78634bc47c9SBenny Halevy } 78734bc47c9SBenny Halevy 788810d82e6STrond Myklebust static void nfs4_callback_free_slot(struct nfs4_session *session, 789810d82e6STrond Myklebust struct nfs4_slot *slot) 79042acd021SAndy Adamson { 79142acd021SAndy Adamson struct nfs4_slot_table *tbl = &session->bc_slot_table; 79242acd021SAndy Adamson 79342acd021SAndy Adamson spin_lock(&tbl->slot_tbl_lock); 79442acd021SAndy Adamson /* 79542acd021SAndy Adamson * Let the state manager know callback processing done. 79642acd021SAndy Adamson * A single slot, so highest used slotid is either 0 or -1 79742acd021SAndy Adamson */ 798810d82e6STrond Myklebust nfs4_free_slot(tbl, slot); 79942acd021SAndy Adamson spin_unlock(&tbl->slot_tbl_lock); 80042acd021SAndy Adamson } 80142acd021SAndy Adamson 80255a67399STrond Myklebust static void nfs4_cb_free_slot(struct cb_process_state *cps) 80342acd021SAndy Adamson { 804810d82e6STrond Myklebust if (cps->slot) { 805810d82e6STrond Myklebust nfs4_callback_free_slot(cps->clp->cl_session, cps->slot); 806810d82e6STrond Myklebust cps->slot = NULL; 807810d82e6STrond Myklebust } 80842acd021SAndy Adamson } 80942acd021SAndy Adamson 81034bc47c9SBenny Halevy #else /* CONFIG_NFS_V4_1 */ 81134bc47c9SBenny Halevy 81234bc47c9SBenny Halevy static __be32 81334bc47c9SBenny Halevy preprocess_nfs41_op(int nop, unsigned int op_nr, struct callback_op **op) 81434bc47c9SBenny Halevy { 81534bc47c9SBenny Halevy return htonl(NFS4ERR_MINOR_VERS_MISMATCH); 81634bc47c9SBenny Halevy } 81734bc47c9SBenny Halevy 81855a67399STrond Myklebust static void nfs4_cb_free_slot(struct cb_process_state *cps) 81942acd021SAndy Adamson { 82042acd021SAndy Adamson } 82134bc47c9SBenny Halevy #endif /* CONFIG_NFS_V4_1 */ 82234bc47c9SBenny Halevy 8236b140b85SBryan Schumaker #ifdef CONFIG_NFS_V4_2 8246b140b85SBryan Schumaker static __be32 8256b140b85SBryan Schumaker preprocess_nfs42_op(int nop, unsigned int op_nr, struct callback_op **op) 8266b140b85SBryan Schumaker { 8276b140b85SBryan Schumaker __be32 status = preprocess_nfs41_op(nop, op_nr, op); 8286b140b85SBryan Schumaker if (status != htonl(NFS4ERR_OP_ILLEGAL)) 8296b140b85SBryan Schumaker return status; 8306b140b85SBryan Schumaker 8315178a125SOlga Kornievskaia if (op_nr == OP_CB_OFFLOAD) { 8325178a125SOlga Kornievskaia *op = &callback_ops[op_nr]; 8335178a125SOlga Kornievskaia return htonl(NFS_OK); 8345178a125SOlga Kornievskaia } else 8356b140b85SBryan Schumaker return htonl(NFS4ERR_NOTSUPP); 8366b140b85SBryan Schumaker return htonl(NFS4ERR_OP_ILLEGAL); 8376b140b85SBryan Schumaker } 8386b140b85SBryan Schumaker #else /* CONFIG_NFS_V4_2 */ 8396b140b85SBryan Schumaker static __be32 8406b140b85SBryan Schumaker preprocess_nfs42_op(int nop, unsigned int op_nr, struct callback_op **op) 8416b140b85SBryan Schumaker { 8426b140b85SBryan Schumaker return htonl(NFS4ERR_MINOR_VERS_MISMATCH); 8436b140b85SBryan Schumaker } 8446b140b85SBryan Schumaker #endif /* CONFIG_NFS_V4_2 */ 8456b140b85SBryan Schumaker 84634bc47c9SBenny Halevy static __be32 84734bc47c9SBenny Halevy preprocess_nfs4_op(unsigned int op_nr, struct callback_op **op) 84834bc47c9SBenny Halevy { 84934bc47c9SBenny Halevy switch (op_nr) { 85034bc47c9SBenny Halevy case OP_CB_GETATTR: 85134bc47c9SBenny Halevy case OP_CB_RECALL: 85234bc47c9SBenny Halevy *op = &callback_ops[op_nr]; 85334bc47c9SBenny Halevy break; 85434bc47c9SBenny Halevy default: 85534bc47c9SBenny Halevy return htonl(NFS4ERR_OP_ILLEGAL); 85634bc47c9SBenny Halevy } 85734bc47c9SBenny Halevy 85834bc47c9SBenny Halevy return htonl(NFS_OK); 85934bc47c9SBenny Halevy } 86034bc47c9SBenny Halevy 861459de2edSBryan Schumaker static __be32 process_op(int nop, struct svc_rqst *rqstp, 862c36fca52SAndy Adamson struct cb_process_state *cps) 8631da177e4SLinus Torvalds { 8649eff97abSChuck Lever struct xdr_stream *xdr_out = &rqstp->rq_res_stream; 865a162a6b8STrond Myklebust struct callback_op *op = &callback_ops[0]; 86631d2b435SAndy Adamson unsigned int op_nr; 86734bc47c9SBenny Halevy __be32 status; 8681da177e4SLinus Torvalds long maxlen; 869e6f684f6SAl Viro __be32 res; 8701da177e4SLinus Torvalds 8719eff97abSChuck Lever status = decode_op_hdr(&rqstp->rq_arg_stream, &op_nr); 87231d2b435SAndy Adamson if (unlikely(status)) 87331d2b435SAndy Adamson return status; 8741da177e4SLinus Torvalds 8756b140b85SBryan Schumaker switch (cps->minorversion) { 8766b140b85SBryan Schumaker case 0: 8776b140b85SBryan Schumaker status = preprocess_nfs4_op(op_nr, &op); 8786b140b85SBryan Schumaker break; 8796b140b85SBryan Schumaker case 1: 8806b140b85SBryan Schumaker status = preprocess_nfs41_op(nop, op_nr, &op); 8816b140b85SBryan Schumaker break; 8826b140b85SBryan Schumaker case 2: 8836b140b85SBryan Schumaker status = preprocess_nfs42_op(nop, op_nr, &op); 8846b140b85SBryan Schumaker break; 8856b140b85SBryan Schumaker default: 8866b140b85SBryan Schumaker status = htonl(NFS4ERR_MINOR_VERS_MISMATCH); 8876b140b85SBryan Schumaker } 8886b140b85SBryan Schumaker 88934bc47c9SBenny Halevy if (status == htonl(NFS4ERR_OP_ILLEGAL)) 89034bc47c9SBenny Halevy op_nr = OP_CB_ILLEGAL; 891b92b3019SAndy Adamson if (status) 892b92b3019SAndy Adamson goto encode_hdr; 89331d2b435SAndy Adamson 894c36fca52SAndy Adamson if (cps->drc_status) { 895c36fca52SAndy Adamson status = cps->drc_status; 8964911096fSAndy Adamson goto encode_hdr; 8974911096fSAndy Adamson } 8984911096fSAndy Adamson 8991da177e4SLinus Torvalds maxlen = xdr_out->end - xdr_out->p; 9001da177e4SLinus Torvalds if (maxlen > 0 && maxlen < PAGE_SIZE) { 9019eff97abSChuck Lever status = op->decode_args(rqstp, &rqstp->rq_arg_stream, 9029eff97abSChuck Lever rqstp->rq_argp); 903e95e60daSAndy Adamson if (likely(status == 0)) 9049eff97abSChuck Lever status = op->process_op(rqstp->rq_argp, rqstp->rq_resp, 9059eff97abSChuck Lever cps); 9061da177e4SLinus Torvalds } else 9071da177e4SLinus Torvalds status = htonl(NFS4ERR_RESOURCE); 9081da177e4SLinus Torvalds 909b92b3019SAndy Adamson encode_hdr: 9101da177e4SLinus Torvalds res = encode_op_hdr(xdr_out, op_nr, status); 91131d2b435SAndy Adamson if (unlikely(res)) 91231d2b435SAndy Adamson return res; 9131da177e4SLinus Torvalds if (op->encode_res != NULL && status == 0) 9149eff97abSChuck Lever status = op->encode_res(rqstp, xdr_out, rqstp->rq_resp); 9151da177e4SLinus Torvalds return status; 9161da177e4SLinus Torvalds } 9171da177e4SLinus Torvalds 9181da177e4SLinus Torvalds /* 9191da177e4SLinus Torvalds * Decode, process and encode a COMPOUND 9201da177e4SLinus Torvalds */ 921a6beb732SChristoph Hellwig static __be32 nfs4_callback_compound(struct svc_rqst *rqstp) 9221da177e4SLinus Torvalds { 9233a6258e1STrond Myklebust struct cb_compound_hdr_arg hdr_arg = { 0 }; 9243a6258e1STrond Myklebust struct cb_compound_hdr_res hdr_res = { NULL }; 925c36fca52SAndy Adamson struct cb_process_state cps = { 926c36fca52SAndy Adamson .drc_status = 0, 927c36fca52SAndy Adamson .clp = NULL, 9289695c705SStanislav Kinsbursky .net = SVC_NET(rqstp), 929c36fca52SAndy Adamson }; 9303a6258e1STrond Myklebust unsigned int nops = 0; 93189ef17b6SChuck Lever __be32 status; 9321da177e4SLinus Torvalds 93389ef17b6SChuck Lever status = decode_compound_hdr_arg(&rqstp->rq_arg_stream, &hdr_arg); 9344ed0d83dSVaishali Thakkar if (status == htonl(NFS4ERR_RESOURCE)) 9353a6258e1STrond Myklebust return rpc_garbage_args; 9363a6258e1STrond Myklebust 937c36fca52SAndy Adamson if (hdr_arg.minorversion == 0) { 9389695c705SStanislav Kinsbursky cps.clp = nfs4_find_client_ident(SVC_NET(rqstp), hdr_arg.cb_ident); 9392bb50aabSChuck Lever if (!cps.clp) { 9402bb50aabSChuck Lever trace_nfs_cb_no_clp(rqstp->rq_xid, hdr_arg.cb_ident); 9412bb50aabSChuck Lever goto out_invalidcred; 9422bb50aabSChuck Lever } 9432bb50aabSChuck Lever if (!check_gss_callback_principal(cps.clp, rqstp)) { 9442bb50aabSChuck Lever trace_nfs_cb_badprinc(rqstp->rq_xid, hdr_arg.cb_ident); 94532cd3ee5SOlga Kornievskaia nfs_put_client(cps.clp); 946a4e187d8SChuck Lever goto out_invalidcred; 947778be232SAndy Adamson } 94832cd3ee5SOlga Kornievskaia } 949c36fca52SAndy Adamson 950459de2edSBryan Schumaker cps.minorversion = hdr_arg.minorversion; 9511da177e4SLinus Torvalds hdr_res.taglen = hdr_arg.taglen; 9521da177e4SLinus Torvalds hdr_res.tag = hdr_arg.tag; 95389ef17b6SChuck Lever if (encode_compound_hdr_res(&rqstp->rq_res_stream, &hdr_res) != 0) { 95432cd3ee5SOlga Kornievskaia if (cps.clp) 95532cd3ee5SOlga Kornievskaia nfs_put_client(cps.clp); 9563a6258e1STrond Myklebust return rpc_system_err; 95732cd3ee5SOlga Kornievskaia } 9583a6258e1STrond Myklebust while (status == 0 && nops != hdr_arg.nops) { 9599eff97abSChuck Lever status = process_op(nops, rqstp, &cps); 9601da177e4SLinus Torvalds nops++; 9611da177e4SLinus Torvalds } 9623a6258e1STrond Myklebust 96331d2b435SAndy Adamson /* Buffer overflow in decode_ops_hdr or encode_ops_hdr. Return 96431d2b435SAndy Adamson * resource error in cb_compound status without returning op */ 96531d2b435SAndy Adamson if (unlikely(status == htonl(NFS4ERR_RESOURCE_HDR))) { 96631d2b435SAndy Adamson status = htonl(NFS4ERR_RESOURCE); 96731d2b435SAndy Adamson nops--; 96831d2b435SAndy Adamson } 96931d2b435SAndy Adamson 9701da177e4SLinus Torvalds *hdr_res.status = status; 9711da177e4SLinus Torvalds *hdr_res.nops = htonl(nops); 97255a67399STrond Myklebust nfs4_cb_free_slot(&cps); 973c36fca52SAndy Adamson nfs_put_client(cps.clp); 9741da177e4SLinus Torvalds return rpc_success; 975a4e187d8SChuck Lever 976a4e187d8SChuck Lever out_invalidcred: 977a4e187d8SChuck Lever pr_warn_ratelimited("NFS: NFSv4 callback contains invalid cred\n"); 9789082e1d9SChuck Lever rqstp->rq_auth_stat = rpc_autherr_badcred; 9799082e1d9SChuck Lever return rpc_success; 9801da177e4SLinus Torvalds } 9811da177e4SLinus Torvalds 9827d34c962SChuck Lever static int 983*cee4db19SChuck Lever nfs_callback_dispatch(struct svc_rqst *rqstp) 9847d34c962SChuck Lever { 9857d34c962SChuck Lever const struct svc_procedure *procp = rqstp->rq_procinfo; 9867d34c962SChuck Lever 987*cee4db19SChuck Lever *rqstp->rq_accept_statp = procp->pc_func(rqstp); 9887d34c962SChuck Lever return 1; 9897d34c962SChuck Lever } 9907d34c962SChuck Lever 9911da177e4SLinus Torvalds /* 9921da177e4SLinus Torvalds * Define NFS4 callback COMPOUND ops. 9931da177e4SLinus Torvalds */ 9941da177e4SLinus Torvalds static struct callback_op callback_ops[] = { 9951da177e4SLinus Torvalds [0] = { 9961da177e4SLinus Torvalds .res_maxsize = CB_OP_HDR_RES_MAXSZ, 9971da177e4SLinus Torvalds }, 9981da177e4SLinus Torvalds [OP_CB_GETATTR] = { 999f4dac4adSChristoph Hellwig .process_op = nfs4_callback_getattr, 1000f4dac4adSChristoph Hellwig .decode_args = decode_getattr_args, 1001f4dac4adSChristoph Hellwig .encode_res = encode_getattr_res, 10021da177e4SLinus Torvalds .res_maxsize = CB_OP_GETATTR_RES_MAXSZ, 10031da177e4SLinus Torvalds }, 10041da177e4SLinus Torvalds [OP_CB_RECALL] = { 1005f4dac4adSChristoph Hellwig .process_op = nfs4_callback_recall, 1006f4dac4adSChristoph Hellwig .decode_args = decode_recall_args, 10071da177e4SLinus Torvalds .res_maxsize = CB_OP_RECALL_RES_MAXSZ, 10084aece6a1SBenny Halevy }, 10094aece6a1SBenny Halevy #if defined(CONFIG_NFS_V4_1) 1010f2a62561SFred Isaman [OP_CB_LAYOUTRECALL] = { 1011f4dac4adSChristoph Hellwig .process_op = nfs4_callback_layoutrecall, 1012f4dac4adSChristoph Hellwig .decode_args = decode_layoutrecall_args, 1013f2a62561SFred Isaman .res_maxsize = CB_OP_LAYOUTRECALL_RES_MAXSZ, 1014f2a62561SFred Isaman }, 10151be5683bSMarc Eshel [OP_CB_NOTIFY_DEVICEID] = { 1016f4dac4adSChristoph Hellwig .process_op = nfs4_callback_devicenotify, 1017f4dac4adSChristoph Hellwig .decode_args = decode_devicenotify_args, 10181be5683bSMarc Eshel .res_maxsize = CB_OP_DEVICENOTIFY_RES_MAXSZ, 10191be5683bSMarc Eshel }, 10204aece6a1SBenny Halevy [OP_CB_SEQUENCE] = { 1021f4dac4adSChristoph Hellwig .process_op = nfs4_callback_sequence, 1022f4dac4adSChristoph Hellwig .decode_args = decode_cb_sequence_args, 1023f4dac4adSChristoph Hellwig .encode_res = encode_cb_sequence_res, 10244aece6a1SBenny Halevy .res_maxsize = CB_OP_SEQUENCE_RES_MAXSZ, 10254aece6a1SBenny Halevy }, 102631f09607SAlexandros Batsakis [OP_CB_RECALL_ANY] = { 1027f4dac4adSChristoph Hellwig .process_op = nfs4_callback_recallany, 1028f4dac4adSChristoph Hellwig .decode_args = decode_recallany_args, 102931f09607SAlexandros Batsakis .res_maxsize = CB_OP_RECALLANY_RES_MAXSZ, 103031f09607SAlexandros Batsakis }, 1031b9efa1b2SAndy Adamson [OP_CB_RECALL_SLOT] = { 1032f4dac4adSChristoph Hellwig .process_op = nfs4_callback_recallslot, 1033f4dac4adSChristoph Hellwig .decode_args = decode_recallslot_args, 1034b9efa1b2SAndy Adamson .res_maxsize = CB_OP_RECALLSLOT_RES_MAXSZ, 1035b9efa1b2SAndy Adamson }, 1036db783688SJeff Layton [OP_CB_NOTIFY_LOCK] = { 1037f4dac4adSChristoph Hellwig .process_op = nfs4_callback_notify_lock, 1038f4dac4adSChristoph Hellwig .decode_args = decode_notify_lock_args, 1039db783688SJeff Layton .res_maxsize = CB_OP_NOTIFY_LOCK_RES_MAXSZ, 1040db783688SJeff Layton }, 10414aece6a1SBenny Halevy #endif /* CONFIG_NFS_V4_1 */ 10425178a125SOlga Kornievskaia #ifdef CONFIG_NFS_V4_2 10435178a125SOlga Kornievskaia [OP_CB_OFFLOAD] = { 10445178a125SOlga Kornievskaia .process_op = nfs4_callback_offload, 10455178a125SOlga Kornievskaia .decode_args = decode_offload_args, 10465178a125SOlga Kornievskaia .res_maxsize = CB_OP_OFFLOAD_RES_MAXSZ, 10475178a125SOlga Kornievskaia }, 10485178a125SOlga Kornievskaia #endif /* CONFIG_NFS_V4_2 */ 10491da177e4SLinus Torvalds }; 10501da177e4SLinus Torvalds 10511da177e4SLinus Torvalds /* 10521da177e4SLinus Torvalds * Define NFS4 callback procedures 10531da177e4SLinus Torvalds */ 1054860bda29SChristoph Hellwig static const struct svc_procedure nfs4_callback_procedures1[] = { 10551da177e4SLinus Torvalds [CB_NULL] = { 10561da177e4SLinus Torvalds .pc_func = nfs4_callback_null, 105763f8de37SChristoph Hellwig .pc_encode = nfs4_encode_void, 10581da177e4SLinus Torvalds .pc_xdrressize = 1, 10592289e87bSChuck Lever .pc_name = "NULL", 10601da177e4SLinus Torvalds }, 10611da177e4SLinus Torvalds [CB_COMPOUND] = { 10621da177e4SLinus Torvalds .pc_func = nfs4_callback_compound, 106363f8de37SChristoph Hellwig .pc_encode = nfs4_encode_void, 10641da177e4SLinus Torvalds .pc_argsize = 256, 1065103cc1faSChuck Lever .pc_argzero = 256, 10661da177e4SLinus Torvalds .pc_ressize = 256, 10671da177e4SLinus Torvalds .pc_xdrressize = NFS4_CALLBACK_BUFSIZE, 10682289e87bSChuck Lever .pc_name = "COMPOUND", 10691da177e4SLinus Torvalds } 10701da177e4SLinus Torvalds }; 10711da177e4SLinus Torvalds 10727fd38af9SChristoph Hellwig static unsigned int nfs4_callback_count1[ARRAY_SIZE(nfs4_callback_procedures1)]; 1073e9679189SChristoph Hellwig const struct svc_version nfs4_callback_version1 = { 10741da177e4SLinus Torvalds .vs_vers = 1, 10751da177e4SLinus Torvalds .vs_nproc = ARRAY_SIZE(nfs4_callback_procedures1), 10761da177e4SLinus Torvalds .vs_proc = nfs4_callback_procedures1, 10777fd38af9SChristoph Hellwig .vs_count = nfs4_callback_count1, 10781da177e4SLinus Torvalds .vs_xdrsize = NFS4_CALLBACK_XDRSIZE, 10797d34c962SChuck Lever .vs_dispatch = nfs_callback_dispatch, 108005a45a2dSJeff Layton .vs_hidden = true, 10815283b03eSJeff Layton .vs_need_cong_ctrl = true, 10821da177e4SLinus Torvalds }; 10831da177e4SLinus Torvalds 10847fd38af9SChristoph Hellwig static unsigned int nfs4_callback_count4[ARRAY_SIZE(nfs4_callback_procedures1)]; 1085e9679189SChristoph Hellwig const struct svc_version nfs4_callback_version4 = { 108607bccc2dSAlexandros Batsakis .vs_vers = 4, 108707bccc2dSAlexandros Batsakis .vs_nproc = ARRAY_SIZE(nfs4_callback_procedures1), 108807bccc2dSAlexandros Batsakis .vs_proc = nfs4_callback_procedures1, 10897fd38af9SChristoph Hellwig .vs_count = nfs4_callback_count4, 109007bccc2dSAlexandros Batsakis .vs_xdrsize = NFS4_CALLBACK_XDRSIZE, 10917d34c962SChuck Lever .vs_dispatch = nfs_callback_dispatch, 109205a45a2dSJeff Layton .vs_hidden = true, 10935283b03eSJeff Layton .vs_need_cong_ctrl = true, 109407bccc2dSAlexandros Batsakis }; 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