11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * linux/fs/nfs/callback_xdr.c 31da177e4SLinus Torvalds * 41da177e4SLinus Torvalds * Copyright (C) 2004 Trond Myklebust 51da177e4SLinus Torvalds * 61da177e4SLinus Torvalds * NFSv4 callback encode/decode procedures 71da177e4SLinus Torvalds */ 81da177e4SLinus Torvalds #include <linux/kernel.h> 91da177e4SLinus Torvalds #include <linux/sunrpc/svc.h> 101da177e4SLinus Torvalds #include <linux/nfs4.h> 111da177e4SLinus Torvalds #include <linux/nfs_fs.h> 124ce79717STrond Myklebust #include "nfs4_fs.h" 131da177e4SLinus Torvalds #include "callback.h" 141da177e4SLinus Torvalds 151da177e4SLinus Torvalds #define CB_OP_TAGLEN_MAXSZ (512) 161da177e4SLinus Torvalds #define CB_OP_HDR_RES_MAXSZ (2 + CB_OP_TAGLEN_MAXSZ) 171da177e4SLinus Torvalds #define CB_OP_GETATTR_BITMAP_MAXSZ (4) 181da177e4SLinus Torvalds #define CB_OP_GETATTR_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ + \ 191da177e4SLinus Torvalds CB_OP_GETATTR_BITMAP_MAXSZ + \ 201da177e4SLinus Torvalds 2 + 2 + 3 + 3) 211da177e4SLinus Torvalds #define CB_OP_RECALL_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ) 221da177e4SLinus Torvalds 234aece6a1SBenny Halevy #if defined(CONFIG_NFS_V4_1) 244aece6a1SBenny Halevy #define CB_OP_SEQUENCE_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ + \ 254aece6a1SBenny Halevy 4 + 1 + 3) 2631f09607SAlexandros Batsakis #define CB_OP_RECALLANY_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ) 274aece6a1SBenny Halevy #endif /* CONFIG_NFS_V4_1 */ 284aece6a1SBenny Halevy 291da177e4SLinus Torvalds #define NFSDBG_FACILITY NFSDBG_CALLBACK 301da177e4SLinus Torvalds 3131d2b435SAndy Adamson /* Internal error code */ 3231d2b435SAndy Adamson #define NFS4ERR_RESOURCE_HDR 11050 3331d2b435SAndy Adamson 34e6f684f6SAl Viro typedef __be32 (*callback_process_op_t)(void *, void *); 35e6f684f6SAl Viro typedef __be32 (*callback_decode_arg_t)(struct svc_rqst *, struct xdr_stream *, void *); 36e6f684f6SAl Viro typedef __be32 (*callback_encode_res_t)(struct svc_rqst *, struct xdr_stream *, void *); 371da177e4SLinus Torvalds 381da177e4SLinus Torvalds 391da177e4SLinus Torvalds struct callback_op { 401da177e4SLinus Torvalds callback_process_op_t process_op; 411da177e4SLinus Torvalds callback_decode_arg_t decode_args; 421da177e4SLinus Torvalds callback_encode_res_t encode_res; 431da177e4SLinus Torvalds long res_maxsize; 441da177e4SLinus Torvalds }; 451da177e4SLinus Torvalds 461da177e4SLinus Torvalds static struct callback_op callback_ops[]; 471da177e4SLinus Torvalds 487111c66eSAl Viro static __be32 nfs4_callback_null(struct svc_rqst *rqstp, void *argp, void *resp) 491da177e4SLinus Torvalds { 501da177e4SLinus Torvalds return htonl(NFS4_OK); 511da177e4SLinus Torvalds } 521da177e4SLinus Torvalds 535704fdebSAl Viro static int nfs4_decode_void(struct svc_rqst *rqstp, __be32 *p, void *dummy) 541da177e4SLinus Torvalds { 551da177e4SLinus Torvalds return xdr_argsize_check(rqstp, p); 561da177e4SLinus Torvalds } 571da177e4SLinus Torvalds 585704fdebSAl Viro static int nfs4_encode_void(struct svc_rqst *rqstp, __be32 *p, void *dummy) 591da177e4SLinus Torvalds { 601da177e4SLinus Torvalds return xdr_ressize_check(rqstp, p); 611da177e4SLinus Torvalds } 621da177e4SLinus Torvalds 635704fdebSAl Viro static __be32 *read_buf(struct xdr_stream *xdr, int nbytes) 641da177e4SLinus Torvalds { 655704fdebSAl Viro __be32 *p; 661da177e4SLinus Torvalds 671da177e4SLinus Torvalds p = xdr_inline_decode(xdr, nbytes); 681da177e4SLinus Torvalds if (unlikely(p == NULL)) 691da177e4SLinus Torvalds printk(KERN_WARNING "NFSv4 callback reply buffer overflowed!\n"); 701da177e4SLinus Torvalds return p; 711da177e4SLinus Torvalds } 721da177e4SLinus Torvalds 73e6f684f6SAl Viro static __be32 decode_string(struct xdr_stream *xdr, unsigned int *len, const char **str) 741da177e4SLinus Torvalds { 755704fdebSAl Viro __be32 *p; 761da177e4SLinus Torvalds 771da177e4SLinus Torvalds p = read_buf(xdr, 4); 781da177e4SLinus Torvalds if (unlikely(p == NULL)) 791da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 801da177e4SLinus Torvalds *len = ntohl(*p); 811da177e4SLinus Torvalds 821da177e4SLinus Torvalds if (*len != 0) { 831da177e4SLinus Torvalds p = read_buf(xdr, *len); 841da177e4SLinus Torvalds if (unlikely(p == NULL)) 851da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 861da177e4SLinus Torvalds *str = (const char *)p; 871da177e4SLinus Torvalds } else 881da177e4SLinus Torvalds *str = NULL; 891da177e4SLinus Torvalds 901da177e4SLinus Torvalds return 0; 911da177e4SLinus Torvalds } 921da177e4SLinus Torvalds 93e6f684f6SAl Viro static __be32 decode_fh(struct xdr_stream *xdr, struct nfs_fh *fh) 941da177e4SLinus Torvalds { 955704fdebSAl Viro __be32 *p; 961da177e4SLinus Torvalds 971da177e4SLinus Torvalds p = read_buf(xdr, 4); 981da177e4SLinus Torvalds if (unlikely(p == NULL)) 991da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 1001da177e4SLinus Torvalds fh->size = ntohl(*p); 1011da177e4SLinus Torvalds if (fh->size > NFS4_FHSIZE) 1021da177e4SLinus Torvalds return htonl(NFS4ERR_BADHANDLE); 1031da177e4SLinus Torvalds p = read_buf(xdr, fh->size); 1041da177e4SLinus Torvalds if (unlikely(p == NULL)) 1051da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 1061da177e4SLinus Torvalds memcpy(&fh->data[0], p, fh->size); 1071da177e4SLinus Torvalds memset(&fh->data[fh->size], 0, sizeof(fh->data) - fh->size); 1081da177e4SLinus Torvalds return 0; 1091da177e4SLinus Torvalds } 1101da177e4SLinus Torvalds 111e6f684f6SAl Viro static __be32 decode_bitmap(struct xdr_stream *xdr, uint32_t *bitmap) 1121da177e4SLinus Torvalds { 1135704fdebSAl Viro __be32 *p; 1141da177e4SLinus Torvalds unsigned int attrlen; 1151da177e4SLinus Torvalds 1161da177e4SLinus Torvalds p = read_buf(xdr, 4); 1171da177e4SLinus Torvalds if (unlikely(p == NULL)) 1181da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 1191da177e4SLinus Torvalds attrlen = ntohl(*p); 1201da177e4SLinus Torvalds p = read_buf(xdr, attrlen << 2); 1211da177e4SLinus Torvalds if (unlikely(p == NULL)) 1221da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 1231da177e4SLinus Torvalds if (likely(attrlen > 0)) 1241da177e4SLinus Torvalds bitmap[0] = ntohl(*p++); 1251da177e4SLinus Torvalds if (attrlen > 1) 1261da177e4SLinus Torvalds bitmap[1] = ntohl(*p); 1271da177e4SLinus Torvalds return 0; 1281da177e4SLinus Torvalds } 1291da177e4SLinus Torvalds 130e6f684f6SAl Viro static __be32 decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 1311da177e4SLinus Torvalds { 1325704fdebSAl Viro __be32 *p; 1331da177e4SLinus Torvalds 1341da177e4SLinus Torvalds p = read_buf(xdr, 16); 1351da177e4SLinus Torvalds if (unlikely(p == NULL)) 1361da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 1371da177e4SLinus Torvalds memcpy(stateid->data, p, 16); 1381da177e4SLinus Torvalds return 0; 1391da177e4SLinus Torvalds } 1401da177e4SLinus Torvalds 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 1461da177e4SLinus Torvalds status = decode_string(xdr, &hdr->taglen, &hdr->tag); 1471da177e4SLinus Torvalds if (unlikely(status != 0)) 1481da177e4SLinus Torvalds return status; 1491da177e4SLinus Torvalds /* We do not like overly long tags! */ 1505cce428dSChuck Lever if (hdr->taglen > CB_OP_TAGLEN_MAXSZ - 12) { 1511da177e4SLinus Torvalds printk("NFSv4 CALLBACK %s: client sent tag of length %u\n", 1523110ff80SHarvey Harrison __func__, hdr->taglen); 1531da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 1541da177e4SLinus Torvalds } 1551da177e4SLinus Torvalds p = read_buf(xdr, 12); 1561da177e4SLinus Torvalds if (unlikely(p == NULL)) 1571da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 158b8f2ef84SBenny Halevy hdr->minorversion = ntohl(*p++); 15948a9e2d2SBenny Halevy /* Check minor version is zero or one. */ 16048a9e2d2SBenny Halevy if (hdr->minorversion <= 1) { 16148a9e2d2SBenny Halevy p++; /* skip callback_ident */ 16248a9e2d2SBenny Halevy } else { 163b8f2ef84SBenny Halevy printk(KERN_WARNING "%s: NFSv4 server callback with " 164b8f2ef84SBenny Halevy "illegal minor version %u!\n", 165b8f2ef84SBenny Halevy __func__, hdr->minorversion); 1661da177e4SLinus Torvalds return htonl(NFS4ERR_MINOR_VERS_MISMATCH); 1671da177e4SLinus Torvalds } 1681da177e4SLinus Torvalds hdr->nops = ntohl(*p); 169b8f2ef84SBenny Halevy dprintk("%s: minorversion %d nops %d\n", __func__, 170b8f2ef84SBenny Halevy hdr->minorversion, hdr->nops); 1711da177e4SLinus Torvalds return 0; 1721da177e4SLinus Torvalds } 1731da177e4SLinus Torvalds 174e6f684f6SAl Viro static __be32 decode_op_hdr(struct xdr_stream *xdr, unsigned int *op) 1751da177e4SLinus Torvalds { 1765704fdebSAl Viro __be32 *p; 1771da177e4SLinus Torvalds p = read_buf(xdr, 4); 1781da177e4SLinus Torvalds if (unlikely(p == NULL)) 17931d2b435SAndy Adamson return htonl(NFS4ERR_RESOURCE_HDR); 1801da177e4SLinus Torvalds *op = ntohl(*p); 1811da177e4SLinus Torvalds return 0; 1821da177e4SLinus Torvalds } 1831da177e4SLinus Torvalds 184e6f684f6SAl Viro static __be32 decode_getattr_args(struct svc_rqst *rqstp, struct xdr_stream *xdr, struct cb_getattrargs *args) 1851da177e4SLinus Torvalds { 186e6f684f6SAl Viro __be32 status; 1871da177e4SLinus Torvalds 1881da177e4SLinus Torvalds status = decode_fh(xdr, &args->fh); 1891da177e4SLinus Torvalds if (unlikely(status != 0)) 1901da177e4SLinus Torvalds goto out; 191671beed7SChuck Lever args->addr = svc_addr(rqstp); 1921da177e4SLinus Torvalds status = decode_bitmap(xdr, args->bitmap); 1931da177e4SLinus Torvalds out: 1943110ff80SHarvey Harrison dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); 1951da177e4SLinus Torvalds return status; 1961da177e4SLinus Torvalds } 1971da177e4SLinus Torvalds 198e6f684f6SAl Viro static __be32 decode_recall_args(struct svc_rqst *rqstp, struct xdr_stream *xdr, struct cb_recallargs *args) 1991da177e4SLinus Torvalds { 2005704fdebSAl Viro __be32 *p; 201e6f684f6SAl Viro __be32 status; 2021da177e4SLinus Torvalds 203c1d35866SChuck Lever args->addr = svc_addr(rqstp); 2041da177e4SLinus Torvalds status = decode_stateid(xdr, &args->stateid); 2051da177e4SLinus Torvalds if (unlikely(status != 0)) 2061da177e4SLinus Torvalds goto out; 2071da177e4SLinus Torvalds p = read_buf(xdr, 4); 2081da177e4SLinus Torvalds if (unlikely(p == NULL)) { 2091da177e4SLinus Torvalds status = htonl(NFS4ERR_RESOURCE); 2101da177e4SLinus Torvalds goto out; 2111da177e4SLinus Torvalds } 2121da177e4SLinus Torvalds args->truncate = ntohl(*p); 2131da177e4SLinus Torvalds status = decode_fh(xdr, &args->fh); 2141da177e4SLinus Torvalds out: 2153110ff80SHarvey Harrison dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); 2163873bc50SAlexey Dobriyan return status; 2171da177e4SLinus Torvalds } 2181da177e4SLinus Torvalds 2194aece6a1SBenny Halevy #if defined(CONFIG_NFS_V4_1) 2204aece6a1SBenny Halevy 2214aece6a1SBenny Halevy static unsigned decode_sessionid(struct xdr_stream *xdr, 2224aece6a1SBenny Halevy struct nfs4_sessionid *sid) 2234aece6a1SBenny Halevy { 2244aece6a1SBenny Halevy uint32_t *p; 2254aece6a1SBenny Halevy int len = NFS4_MAX_SESSIONID_LEN; 2264aece6a1SBenny Halevy 2274aece6a1SBenny Halevy p = read_buf(xdr, len); 2284aece6a1SBenny Halevy if (unlikely(p == NULL)) 229a419aef8SJoe Perches return htonl(NFS4ERR_RESOURCE); 2304aece6a1SBenny Halevy 2314aece6a1SBenny Halevy memcpy(sid->data, p, len); 2324aece6a1SBenny Halevy return 0; 2334aece6a1SBenny Halevy } 2344aece6a1SBenny Halevy 2354aece6a1SBenny Halevy static unsigned decode_rc_list(struct xdr_stream *xdr, 2364aece6a1SBenny Halevy struct referring_call_list *rc_list) 2374aece6a1SBenny Halevy { 2384aece6a1SBenny Halevy uint32_t *p; 2394aece6a1SBenny Halevy int i; 2404aece6a1SBenny Halevy unsigned status; 2414aece6a1SBenny Halevy 2424aece6a1SBenny Halevy status = decode_sessionid(xdr, &rc_list->rcl_sessionid); 2434aece6a1SBenny Halevy if (status) 2444aece6a1SBenny Halevy goto out; 2454aece6a1SBenny Halevy 2464aece6a1SBenny Halevy status = htonl(NFS4ERR_RESOURCE); 2474aece6a1SBenny Halevy p = read_buf(xdr, sizeof(uint32_t)); 2484aece6a1SBenny Halevy if (unlikely(p == NULL)) 2494aece6a1SBenny Halevy goto out; 2504aece6a1SBenny Halevy 2514aece6a1SBenny Halevy rc_list->rcl_nrefcalls = ntohl(*p++); 2524aece6a1SBenny Halevy if (rc_list->rcl_nrefcalls) { 2534aece6a1SBenny Halevy p = read_buf(xdr, 2544aece6a1SBenny Halevy rc_list->rcl_nrefcalls * 2 * sizeof(uint32_t)); 2554aece6a1SBenny Halevy if (unlikely(p == NULL)) 2564aece6a1SBenny Halevy goto out; 2574aece6a1SBenny Halevy rc_list->rcl_refcalls = kmalloc(rc_list->rcl_nrefcalls * 2584aece6a1SBenny Halevy sizeof(*rc_list->rcl_refcalls), 2594aece6a1SBenny Halevy GFP_KERNEL); 2604aece6a1SBenny Halevy if (unlikely(rc_list->rcl_refcalls == NULL)) 2614aece6a1SBenny Halevy goto out; 2624aece6a1SBenny Halevy for (i = 0; i < rc_list->rcl_nrefcalls; i++) { 2634aece6a1SBenny Halevy rc_list->rcl_refcalls[i].rc_sequenceid = ntohl(*p++); 2644aece6a1SBenny Halevy rc_list->rcl_refcalls[i].rc_slotid = ntohl(*p++); 2654aece6a1SBenny Halevy } 2664aece6a1SBenny Halevy } 2674aece6a1SBenny Halevy status = 0; 2684aece6a1SBenny Halevy 2694aece6a1SBenny Halevy out: 2704aece6a1SBenny Halevy return status; 2714aece6a1SBenny Halevy } 2724aece6a1SBenny Halevy 2734aece6a1SBenny Halevy static unsigned decode_cb_sequence_args(struct svc_rqst *rqstp, 2744aece6a1SBenny Halevy struct xdr_stream *xdr, 2754aece6a1SBenny Halevy struct cb_sequenceargs *args) 2764aece6a1SBenny Halevy { 2774aece6a1SBenny Halevy uint32_t *p; 2784aece6a1SBenny Halevy int i; 2794aece6a1SBenny Halevy unsigned status; 2804aece6a1SBenny Halevy 2814aece6a1SBenny Halevy status = decode_sessionid(xdr, &args->csa_sessionid); 2824aece6a1SBenny Halevy if (status) 2834aece6a1SBenny Halevy goto out; 2844aece6a1SBenny Halevy 2854aece6a1SBenny Halevy status = htonl(NFS4ERR_RESOURCE); 2864aece6a1SBenny Halevy p = read_buf(xdr, 5 * sizeof(uint32_t)); 2874aece6a1SBenny Halevy if (unlikely(p == NULL)) 2884aece6a1SBenny Halevy goto out; 2894aece6a1SBenny Halevy 29065fc64e5SRicardo Labiaga args->csa_addr = svc_addr(rqstp); 2914aece6a1SBenny Halevy args->csa_sequenceid = ntohl(*p++); 2924aece6a1SBenny Halevy args->csa_slotid = ntohl(*p++); 2934aece6a1SBenny Halevy args->csa_highestslotid = ntohl(*p++); 2944aece6a1SBenny Halevy args->csa_cachethis = ntohl(*p++); 2954aece6a1SBenny Halevy args->csa_nrclists = ntohl(*p++); 2964aece6a1SBenny Halevy args->csa_rclists = NULL; 2974aece6a1SBenny Halevy if (args->csa_nrclists) { 2984aece6a1SBenny Halevy args->csa_rclists = kmalloc(args->csa_nrclists * 2994aece6a1SBenny Halevy sizeof(*args->csa_rclists), 3004aece6a1SBenny Halevy GFP_KERNEL); 3014aece6a1SBenny Halevy if (unlikely(args->csa_rclists == NULL)) 3024aece6a1SBenny Halevy goto out; 3034aece6a1SBenny Halevy 3044aece6a1SBenny Halevy for (i = 0; i < args->csa_nrclists; i++) { 3054aece6a1SBenny Halevy status = decode_rc_list(xdr, &args->csa_rclists[i]); 3064aece6a1SBenny Halevy if (status) 3074aece6a1SBenny Halevy goto out_free; 3084aece6a1SBenny Halevy } 3094aece6a1SBenny Halevy } 3104aece6a1SBenny Halevy status = 0; 3114aece6a1SBenny Halevy 3124aece6a1SBenny Halevy dprintk("%s: sessionid %x:%x:%x:%x sequenceid %u slotid %u " 3134aece6a1SBenny Halevy "highestslotid %u cachethis %d nrclists %u\n", 3144aece6a1SBenny Halevy __func__, 3154aece6a1SBenny Halevy ((u32 *)&args->csa_sessionid)[0], 3164aece6a1SBenny Halevy ((u32 *)&args->csa_sessionid)[1], 3174aece6a1SBenny Halevy ((u32 *)&args->csa_sessionid)[2], 3184aece6a1SBenny Halevy ((u32 *)&args->csa_sessionid)[3], 3194aece6a1SBenny Halevy args->csa_sequenceid, args->csa_slotid, 3204aece6a1SBenny Halevy args->csa_highestslotid, args->csa_cachethis, 3214aece6a1SBenny Halevy args->csa_nrclists); 3224aece6a1SBenny Halevy out: 3234aece6a1SBenny Halevy dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); 3244aece6a1SBenny Halevy return status; 3254aece6a1SBenny Halevy 3264aece6a1SBenny Halevy out_free: 3274aece6a1SBenny Halevy for (i = 0; i < args->csa_nrclists; i++) 3284aece6a1SBenny Halevy kfree(args->csa_rclists[i].rcl_refcalls); 3294aece6a1SBenny Halevy kfree(args->csa_rclists); 3304aece6a1SBenny Halevy goto out; 3314aece6a1SBenny Halevy } 3324aece6a1SBenny Halevy 33331f09607SAlexandros Batsakis static unsigned decode_recallany_args(struct svc_rqst *rqstp, 33431f09607SAlexandros Batsakis struct xdr_stream *xdr, 33531f09607SAlexandros Batsakis struct cb_recallanyargs *args) 33631f09607SAlexandros Batsakis { 33731f09607SAlexandros Batsakis uint32_t *p; 33831f09607SAlexandros Batsakis 33931f09607SAlexandros Batsakis args->craa_addr = svc_addr(rqstp); 34031f09607SAlexandros Batsakis p = read_buf(xdr, 4); 34131f09607SAlexandros Batsakis if (unlikely(p == NULL)) 34231f09607SAlexandros Batsakis return htonl(NFS4ERR_BADXDR); 34331f09607SAlexandros Batsakis args->craa_objs_to_keep = ntohl(*p++); 34431f09607SAlexandros Batsakis p = read_buf(xdr, 4); 34531f09607SAlexandros Batsakis if (unlikely(p == NULL)) 34631f09607SAlexandros Batsakis return htonl(NFS4ERR_BADXDR); 34731f09607SAlexandros Batsakis args->craa_type_mask = ntohl(*p); 34831f09607SAlexandros Batsakis 34931f09607SAlexandros Batsakis return 0; 35031f09607SAlexandros Batsakis } 35131f09607SAlexandros Batsakis 3524aece6a1SBenny Halevy #endif /* CONFIG_NFS_V4_1 */ 3534aece6a1SBenny Halevy 354e6f684f6SAl Viro static __be32 encode_string(struct xdr_stream *xdr, unsigned int len, const char *str) 3551da177e4SLinus Torvalds { 3565704fdebSAl Viro __be32 *p; 3571da177e4SLinus Torvalds 3581da177e4SLinus Torvalds p = xdr_reserve_space(xdr, 4 + len); 3591da177e4SLinus Torvalds if (unlikely(p == NULL)) 3601da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 3611da177e4SLinus Torvalds xdr_encode_opaque(p, str, len); 3621da177e4SLinus Torvalds return 0; 3631da177e4SLinus Torvalds } 3641da177e4SLinus Torvalds 3651da177e4SLinus Torvalds #define CB_SUPPORTED_ATTR0 (FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE) 3661da177e4SLinus Torvalds #define CB_SUPPORTED_ATTR1 (FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY) 3675704fdebSAl Viro static __be32 encode_attr_bitmap(struct xdr_stream *xdr, const uint32_t *bitmap, __be32 **savep) 3681da177e4SLinus Torvalds { 3695704fdebSAl Viro __be32 bm[2]; 3705704fdebSAl Viro __be32 *p; 3711da177e4SLinus Torvalds 3721da177e4SLinus Torvalds bm[0] = htonl(bitmap[0] & CB_SUPPORTED_ATTR0); 3731da177e4SLinus Torvalds bm[1] = htonl(bitmap[1] & CB_SUPPORTED_ATTR1); 3741da177e4SLinus Torvalds if (bm[1] != 0) { 3751da177e4SLinus Torvalds p = xdr_reserve_space(xdr, 16); 3761da177e4SLinus Torvalds if (unlikely(p == NULL)) 3771da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 3781da177e4SLinus Torvalds *p++ = htonl(2); 3791da177e4SLinus Torvalds *p++ = bm[0]; 3801da177e4SLinus Torvalds *p++ = bm[1]; 3811da177e4SLinus Torvalds } else if (bm[0] != 0) { 3821da177e4SLinus Torvalds p = xdr_reserve_space(xdr, 12); 3831da177e4SLinus Torvalds if (unlikely(p == NULL)) 3841da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 3851da177e4SLinus Torvalds *p++ = htonl(1); 3861da177e4SLinus Torvalds *p++ = bm[0]; 3871da177e4SLinus Torvalds } else { 3881da177e4SLinus Torvalds p = xdr_reserve_space(xdr, 8); 3891da177e4SLinus Torvalds if (unlikely(p == NULL)) 3901da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 3911da177e4SLinus Torvalds *p++ = htonl(0); 3921da177e4SLinus Torvalds } 3931da177e4SLinus Torvalds *savep = p; 3941da177e4SLinus Torvalds return 0; 3951da177e4SLinus Torvalds } 3961da177e4SLinus Torvalds 397e6f684f6SAl Viro static __be32 encode_attr_change(struct xdr_stream *xdr, const uint32_t *bitmap, uint64_t change) 3981da177e4SLinus Torvalds { 3995704fdebSAl Viro __be32 *p; 4001da177e4SLinus Torvalds 4011da177e4SLinus Torvalds if (!(bitmap[0] & FATTR4_WORD0_CHANGE)) 4021da177e4SLinus Torvalds return 0; 4031da177e4SLinus Torvalds p = xdr_reserve_space(xdr, 8); 40490dc7d27SHarvey Harrison if (unlikely(!p)) 4051da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 4061da177e4SLinus Torvalds p = xdr_encode_hyper(p, change); 4071da177e4SLinus Torvalds return 0; 4081da177e4SLinus Torvalds } 4091da177e4SLinus Torvalds 410e6f684f6SAl Viro static __be32 encode_attr_size(struct xdr_stream *xdr, const uint32_t *bitmap, uint64_t size) 4111da177e4SLinus Torvalds { 4125704fdebSAl Viro __be32 *p; 4131da177e4SLinus Torvalds 4141da177e4SLinus Torvalds if (!(bitmap[0] & FATTR4_WORD0_SIZE)) 4151da177e4SLinus Torvalds return 0; 4161da177e4SLinus Torvalds p = xdr_reserve_space(xdr, 8); 41790dc7d27SHarvey Harrison if (unlikely(!p)) 4181da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 4191da177e4SLinus Torvalds p = xdr_encode_hyper(p, size); 4201da177e4SLinus Torvalds return 0; 4211da177e4SLinus Torvalds } 4221da177e4SLinus Torvalds 423e6f684f6SAl Viro static __be32 encode_attr_time(struct xdr_stream *xdr, const struct timespec *time) 4241da177e4SLinus Torvalds { 4255704fdebSAl Viro __be32 *p; 4261da177e4SLinus Torvalds 4271da177e4SLinus Torvalds p = xdr_reserve_space(xdr, 12); 42890dc7d27SHarvey Harrison if (unlikely(!p)) 4291da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 4301da177e4SLinus Torvalds p = xdr_encode_hyper(p, time->tv_sec); 4311da177e4SLinus Torvalds *p = htonl(time->tv_nsec); 4321da177e4SLinus Torvalds return 0; 4331da177e4SLinus Torvalds } 4341da177e4SLinus Torvalds 435e6f684f6SAl Viro static __be32 encode_attr_ctime(struct xdr_stream *xdr, const uint32_t *bitmap, const struct timespec *time) 4361da177e4SLinus Torvalds { 4371da177e4SLinus Torvalds if (!(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) 4381da177e4SLinus Torvalds return 0; 4391da177e4SLinus Torvalds return encode_attr_time(xdr,time); 4401da177e4SLinus Torvalds } 4411da177e4SLinus Torvalds 442e6f684f6SAl Viro static __be32 encode_attr_mtime(struct xdr_stream *xdr, const uint32_t *bitmap, const struct timespec *time) 4431da177e4SLinus Torvalds { 4441da177e4SLinus Torvalds if (!(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) 4451da177e4SLinus Torvalds return 0; 4461da177e4SLinus Torvalds return encode_attr_time(xdr,time); 4471da177e4SLinus Torvalds } 4481da177e4SLinus Torvalds 449e6f684f6SAl Viro static __be32 encode_compound_hdr_res(struct xdr_stream *xdr, struct cb_compound_hdr_res *hdr) 4501da177e4SLinus Torvalds { 451e6f684f6SAl Viro __be32 status; 4521da177e4SLinus Torvalds 4531da177e4SLinus Torvalds hdr->status = xdr_reserve_space(xdr, 4); 4541da177e4SLinus Torvalds if (unlikely(hdr->status == NULL)) 4551da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 4561da177e4SLinus Torvalds status = encode_string(xdr, hdr->taglen, hdr->tag); 4571da177e4SLinus Torvalds if (unlikely(status != 0)) 4581da177e4SLinus Torvalds return status; 4591da177e4SLinus Torvalds hdr->nops = xdr_reserve_space(xdr, 4); 4601da177e4SLinus Torvalds if (unlikely(hdr->nops == NULL)) 4611da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 4621da177e4SLinus Torvalds return 0; 4631da177e4SLinus Torvalds } 4641da177e4SLinus Torvalds 465e6f684f6SAl Viro static __be32 encode_op_hdr(struct xdr_stream *xdr, uint32_t op, __be32 res) 4661da177e4SLinus Torvalds { 4675704fdebSAl Viro __be32 *p; 4681da177e4SLinus Torvalds 4691da177e4SLinus Torvalds p = xdr_reserve_space(xdr, 8); 4701da177e4SLinus Torvalds if (unlikely(p == NULL)) 47131d2b435SAndy Adamson return htonl(NFS4ERR_RESOURCE_HDR); 4721da177e4SLinus Torvalds *p++ = htonl(op); 4731da177e4SLinus Torvalds *p = res; 4741da177e4SLinus Torvalds return 0; 4751da177e4SLinus Torvalds } 4761da177e4SLinus Torvalds 477e6f684f6SAl Viro static __be32 encode_getattr_res(struct svc_rqst *rqstp, struct xdr_stream *xdr, const struct cb_getattrres *res) 4781da177e4SLinus Torvalds { 4795704fdebSAl Viro __be32 *savep = NULL; 480e6f684f6SAl Viro __be32 status = res->status; 4811da177e4SLinus Torvalds 4821da177e4SLinus Torvalds if (unlikely(status != 0)) 4831da177e4SLinus Torvalds goto out; 4841da177e4SLinus Torvalds status = encode_attr_bitmap(xdr, res->bitmap, &savep); 4851da177e4SLinus Torvalds if (unlikely(status != 0)) 4861da177e4SLinus Torvalds goto out; 4871da177e4SLinus Torvalds status = encode_attr_change(xdr, res->bitmap, res->change_attr); 4881da177e4SLinus Torvalds if (unlikely(status != 0)) 4891da177e4SLinus Torvalds goto out; 4901da177e4SLinus Torvalds status = encode_attr_size(xdr, res->bitmap, res->size); 4911da177e4SLinus Torvalds if (unlikely(status != 0)) 4921da177e4SLinus Torvalds goto out; 4931da177e4SLinus Torvalds status = encode_attr_ctime(xdr, res->bitmap, &res->ctime); 4941da177e4SLinus Torvalds if (unlikely(status != 0)) 4951da177e4SLinus Torvalds goto out; 4961da177e4SLinus Torvalds status = encode_attr_mtime(xdr, res->bitmap, &res->mtime); 4971da177e4SLinus Torvalds *savep = htonl((unsigned int)((char *)xdr->p - (char *)(savep+1))); 4981da177e4SLinus Torvalds out: 4993110ff80SHarvey Harrison dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); 5001da177e4SLinus Torvalds return status; 5011da177e4SLinus Torvalds } 5021da177e4SLinus Torvalds 50334bc47c9SBenny Halevy #if defined(CONFIG_NFS_V4_1) 50434bc47c9SBenny Halevy 5054aece6a1SBenny Halevy static unsigned encode_sessionid(struct xdr_stream *xdr, 5064aece6a1SBenny Halevy const struct nfs4_sessionid *sid) 5074aece6a1SBenny Halevy { 5084aece6a1SBenny Halevy uint32_t *p; 5094aece6a1SBenny Halevy int len = NFS4_MAX_SESSIONID_LEN; 5104aece6a1SBenny Halevy 5114aece6a1SBenny Halevy p = xdr_reserve_space(xdr, len); 5124aece6a1SBenny Halevy if (unlikely(p == NULL)) 5134aece6a1SBenny Halevy return htonl(NFS4ERR_RESOURCE); 5144aece6a1SBenny Halevy 5154aece6a1SBenny Halevy memcpy(p, sid, len); 5164aece6a1SBenny Halevy return 0; 5174aece6a1SBenny Halevy } 5184aece6a1SBenny Halevy 5194aece6a1SBenny Halevy static unsigned encode_cb_sequence_res(struct svc_rqst *rqstp, 5204aece6a1SBenny Halevy struct xdr_stream *xdr, 5214aece6a1SBenny Halevy const struct cb_sequenceres *res) 5224aece6a1SBenny Halevy { 5234aece6a1SBenny Halevy uint32_t *p; 5244aece6a1SBenny Halevy unsigned status = res->csr_status; 5254aece6a1SBenny Halevy 5264aece6a1SBenny Halevy if (unlikely(status != 0)) 5274aece6a1SBenny Halevy goto out; 5284aece6a1SBenny Halevy 5294aece6a1SBenny Halevy encode_sessionid(xdr, &res->csr_sessionid); 5304aece6a1SBenny Halevy 5314aece6a1SBenny Halevy p = xdr_reserve_space(xdr, 4 * sizeof(uint32_t)); 5324aece6a1SBenny Halevy if (unlikely(p == NULL)) 5334aece6a1SBenny Halevy return htonl(NFS4ERR_RESOURCE); 5344aece6a1SBenny Halevy 5354aece6a1SBenny Halevy *p++ = htonl(res->csr_sequenceid); 5364aece6a1SBenny Halevy *p++ = htonl(res->csr_slotid); 5374aece6a1SBenny Halevy *p++ = htonl(res->csr_highestslotid); 5384aece6a1SBenny Halevy *p++ = htonl(res->csr_target_highestslotid); 5394aece6a1SBenny Halevy out: 5404aece6a1SBenny Halevy dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); 5414aece6a1SBenny Halevy return status; 5424aece6a1SBenny Halevy } 5434aece6a1SBenny Halevy 54434bc47c9SBenny Halevy static __be32 54534bc47c9SBenny Halevy preprocess_nfs41_op(int nop, unsigned int op_nr, struct callback_op **op) 54634bc47c9SBenny Halevy { 547281fe15dSBenny Halevy if (op_nr == OP_CB_SEQUENCE) { 548281fe15dSBenny Halevy if (nop != 0) 549281fe15dSBenny Halevy return htonl(NFS4ERR_SEQUENCE_POS); 550281fe15dSBenny Halevy } else { 551281fe15dSBenny Halevy if (nop == 0) 552281fe15dSBenny Halevy return htonl(NFS4ERR_OP_NOT_IN_SESSION); 553281fe15dSBenny Halevy } 554281fe15dSBenny Halevy 55534bc47c9SBenny Halevy switch (op_nr) { 55634bc47c9SBenny Halevy case OP_CB_GETATTR: 55734bc47c9SBenny Halevy case OP_CB_RECALL: 5584aece6a1SBenny Halevy case OP_CB_SEQUENCE: 55931f09607SAlexandros Batsakis case OP_CB_RECALL_ANY: 56034bc47c9SBenny Halevy *op = &callback_ops[op_nr]; 56134bc47c9SBenny Halevy break; 56234bc47c9SBenny Halevy 56334bc47c9SBenny Halevy case OP_CB_LAYOUTRECALL: 56434bc47c9SBenny Halevy case OP_CB_NOTIFY_DEVICEID: 56534bc47c9SBenny Halevy case OP_CB_NOTIFY: 56634bc47c9SBenny Halevy case OP_CB_PUSH_DELEG: 56734bc47c9SBenny Halevy case OP_CB_RECALLABLE_OBJ_AVAIL: 56834bc47c9SBenny Halevy case OP_CB_RECALL_SLOT: 56934bc47c9SBenny Halevy case OP_CB_WANTS_CANCELLED: 57034bc47c9SBenny Halevy case OP_CB_NOTIFY_LOCK: 57134bc47c9SBenny Halevy return htonl(NFS4ERR_NOTSUPP); 57234bc47c9SBenny Halevy 57334bc47c9SBenny Halevy default: 57434bc47c9SBenny Halevy return htonl(NFS4ERR_OP_ILLEGAL); 57534bc47c9SBenny Halevy } 57634bc47c9SBenny Halevy 57734bc47c9SBenny Halevy return htonl(NFS_OK); 57834bc47c9SBenny Halevy } 57934bc47c9SBenny Halevy 58034bc47c9SBenny Halevy #else /* CONFIG_NFS_V4_1 */ 58134bc47c9SBenny Halevy 58234bc47c9SBenny Halevy static __be32 58334bc47c9SBenny Halevy preprocess_nfs41_op(int nop, unsigned int op_nr, struct callback_op **op) 58434bc47c9SBenny Halevy { 58534bc47c9SBenny Halevy return htonl(NFS4ERR_MINOR_VERS_MISMATCH); 58634bc47c9SBenny Halevy } 58734bc47c9SBenny Halevy 58834bc47c9SBenny Halevy #endif /* CONFIG_NFS_V4_1 */ 58934bc47c9SBenny Halevy 59034bc47c9SBenny Halevy static __be32 59134bc47c9SBenny Halevy preprocess_nfs4_op(unsigned int op_nr, struct callback_op **op) 59234bc47c9SBenny Halevy { 59334bc47c9SBenny Halevy switch (op_nr) { 59434bc47c9SBenny Halevy case OP_CB_GETATTR: 59534bc47c9SBenny Halevy case OP_CB_RECALL: 59634bc47c9SBenny Halevy *op = &callback_ops[op_nr]; 59734bc47c9SBenny Halevy break; 59834bc47c9SBenny Halevy default: 59934bc47c9SBenny Halevy return htonl(NFS4ERR_OP_ILLEGAL); 60034bc47c9SBenny Halevy } 60134bc47c9SBenny Halevy 60234bc47c9SBenny Halevy return htonl(NFS_OK); 60334bc47c9SBenny Halevy } 60434bc47c9SBenny Halevy 60534bc47c9SBenny Halevy static __be32 process_op(uint32_t minorversion, int nop, 60634bc47c9SBenny Halevy struct svc_rqst *rqstp, 6071da177e4SLinus Torvalds struct xdr_stream *xdr_in, void *argp, 6081da177e4SLinus Torvalds struct xdr_stream *xdr_out, void *resp) 6091da177e4SLinus Torvalds { 610a162a6b8STrond Myklebust struct callback_op *op = &callback_ops[0]; 61131d2b435SAndy Adamson unsigned int op_nr; 61234bc47c9SBenny Halevy __be32 status; 6131da177e4SLinus Torvalds long maxlen; 614e6f684f6SAl Viro __be32 res; 6151da177e4SLinus Torvalds 6163110ff80SHarvey Harrison dprintk("%s: start\n", __func__); 6171da177e4SLinus Torvalds status = decode_op_hdr(xdr_in, &op_nr); 61831d2b435SAndy Adamson if (unlikely(status)) 61931d2b435SAndy Adamson return status; 6201da177e4SLinus Torvalds 62134bc47c9SBenny Halevy dprintk("%s: minorversion=%d nop=%d op_nr=%u\n", 62234bc47c9SBenny Halevy __func__, minorversion, nop, op_nr); 62334bc47c9SBenny Halevy 62434bc47c9SBenny Halevy status = minorversion ? preprocess_nfs41_op(nop, op_nr, &op) : 62534bc47c9SBenny Halevy preprocess_nfs4_op(op_nr, &op); 62634bc47c9SBenny Halevy if (status == htonl(NFS4ERR_OP_ILLEGAL)) 62734bc47c9SBenny Halevy op_nr = OP_CB_ILLEGAL; 628b92b3019SAndy Adamson if (status) 629b92b3019SAndy Adamson goto encode_hdr; 63031d2b435SAndy Adamson 6311da177e4SLinus Torvalds maxlen = xdr_out->end - xdr_out->p; 6321da177e4SLinus Torvalds if (maxlen > 0 && maxlen < PAGE_SIZE) { 6331da177e4SLinus Torvalds status = op->decode_args(rqstp, xdr_in, argp); 634e95e60daSAndy Adamson if (likely(status == 0)) 6351da177e4SLinus Torvalds status = op->process_op(argp, resp); 6361da177e4SLinus Torvalds } else 6371da177e4SLinus Torvalds status = htonl(NFS4ERR_RESOURCE); 6381da177e4SLinus Torvalds 639b92b3019SAndy Adamson encode_hdr: 6401da177e4SLinus Torvalds res = encode_op_hdr(xdr_out, op_nr, status); 64131d2b435SAndy Adamson if (unlikely(res)) 64231d2b435SAndy Adamson return res; 6431da177e4SLinus Torvalds if (op->encode_res != NULL && status == 0) 6441da177e4SLinus Torvalds status = op->encode_res(rqstp, xdr_out, resp); 6453110ff80SHarvey Harrison dprintk("%s: done, status = %d\n", __func__, ntohl(status)); 6461da177e4SLinus Torvalds return status; 6471da177e4SLinus Torvalds } 6481da177e4SLinus Torvalds 6491da177e4SLinus Torvalds /* 6501da177e4SLinus Torvalds * Decode, process and encode a COMPOUND 6511da177e4SLinus Torvalds */ 6527111c66eSAl Viro static __be32 nfs4_callback_compound(struct svc_rqst *rqstp, void *argp, void *resp) 6531da177e4SLinus Torvalds { 6543a6258e1STrond Myklebust struct cb_compound_hdr_arg hdr_arg = { 0 }; 6553a6258e1STrond Myklebust struct cb_compound_hdr_res hdr_res = { NULL }; 6561da177e4SLinus Torvalds struct xdr_stream xdr_in, xdr_out; 6575704fdebSAl Viro __be32 *p; 658e6f684f6SAl Viro __be32 status; 6593a6258e1STrond Myklebust unsigned int nops = 0; 6601da177e4SLinus Torvalds 6613110ff80SHarvey Harrison dprintk("%s: start\n", __func__); 6621da177e4SLinus Torvalds 6631da177e4SLinus Torvalds xdr_init_decode(&xdr_in, &rqstp->rq_arg, rqstp->rq_arg.head[0].iov_base); 6641da177e4SLinus Torvalds 6655704fdebSAl Viro p = (__be32*)((char *)rqstp->rq_res.head[0].iov_base + rqstp->rq_res.head[0].iov_len); 6661da177e4SLinus Torvalds xdr_init_encode(&xdr_out, &rqstp->rq_res, p); 6671da177e4SLinus Torvalds 6683a6258e1STrond Myklebust status = decode_compound_hdr_arg(&xdr_in, &hdr_arg); 6693a6258e1STrond Myklebust if (status == __constant_htonl(NFS4ERR_RESOURCE)) 6703a6258e1STrond Myklebust return rpc_garbage_args; 6713a6258e1STrond Myklebust 6721da177e4SLinus Torvalds hdr_res.taglen = hdr_arg.taglen; 6731da177e4SLinus Torvalds hdr_res.tag = hdr_arg.tag; 6743a6258e1STrond Myklebust if (encode_compound_hdr_res(&xdr_out, &hdr_res) != 0) 6753a6258e1STrond Myklebust return rpc_system_err; 6761da177e4SLinus Torvalds 6773a6258e1STrond Myklebust while (status == 0 && nops != hdr_arg.nops) { 67834bc47c9SBenny Halevy status = process_op(hdr_arg.minorversion, nops, 67934bc47c9SBenny Halevy rqstp, &xdr_in, argp, &xdr_out, resp); 6801da177e4SLinus Torvalds nops++; 6811da177e4SLinus Torvalds } 6823a6258e1STrond Myklebust 68331d2b435SAndy Adamson /* Buffer overflow in decode_ops_hdr or encode_ops_hdr. Return 68431d2b435SAndy Adamson * resource error in cb_compound status without returning op */ 68531d2b435SAndy Adamson if (unlikely(status == htonl(NFS4ERR_RESOURCE_HDR))) { 68631d2b435SAndy Adamson status = htonl(NFS4ERR_RESOURCE); 68731d2b435SAndy Adamson nops--; 68831d2b435SAndy Adamson } 68931d2b435SAndy Adamson 6901da177e4SLinus Torvalds *hdr_res.status = status; 6911da177e4SLinus Torvalds *hdr_res.nops = htonl(nops); 6923110ff80SHarvey Harrison dprintk("%s: done, status = %u\n", __func__, ntohl(status)); 6931da177e4SLinus Torvalds return rpc_success; 6941da177e4SLinus Torvalds } 6951da177e4SLinus Torvalds 6961da177e4SLinus Torvalds /* 6971da177e4SLinus Torvalds * Define NFS4 callback COMPOUND ops. 6981da177e4SLinus Torvalds */ 6991da177e4SLinus Torvalds static struct callback_op callback_ops[] = { 7001da177e4SLinus Torvalds [0] = { 7011da177e4SLinus Torvalds .res_maxsize = CB_OP_HDR_RES_MAXSZ, 7021da177e4SLinus Torvalds }, 7031da177e4SLinus Torvalds [OP_CB_GETATTR] = { 7041da177e4SLinus Torvalds .process_op = (callback_process_op_t)nfs4_callback_getattr, 7051da177e4SLinus Torvalds .decode_args = (callback_decode_arg_t)decode_getattr_args, 7061da177e4SLinus Torvalds .encode_res = (callback_encode_res_t)encode_getattr_res, 7071da177e4SLinus Torvalds .res_maxsize = CB_OP_GETATTR_RES_MAXSZ, 7081da177e4SLinus Torvalds }, 7091da177e4SLinus Torvalds [OP_CB_RECALL] = { 7101da177e4SLinus Torvalds .process_op = (callback_process_op_t)nfs4_callback_recall, 7111da177e4SLinus Torvalds .decode_args = (callback_decode_arg_t)decode_recall_args, 7121da177e4SLinus Torvalds .res_maxsize = CB_OP_RECALL_RES_MAXSZ, 7134aece6a1SBenny Halevy }, 7144aece6a1SBenny Halevy #if defined(CONFIG_NFS_V4_1) 7154aece6a1SBenny Halevy [OP_CB_SEQUENCE] = { 7164aece6a1SBenny Halevy .process_op = (callback_process_op_t)nfs4_callback_sequence, 7174aece6a1SBenny Halevy .decode_args = (callback_decode_arg_t)decode_cb_sequence_args, 7184aece6a1SBenny Halevy .encode_res = (callback_encode_res_t)encode_cb_sequence_res, 7194aece6a1SBenny Halevy .res_maxsize = CB_OP_SEQUENCE_RES_MAXSZ, 7204aece6a1SBenny Halevy }, 72131f09607SAlexandros Batsakis [OP_CB_RECALL_ANY] = { 72231f09607SAlexandros Batsakis .process_op = (callback_process_op_t)nfs4_callback_recallany, 72331f09607SAlexandros Batsakis .decode_args = (callback_decode_arg_t)decode_recallany_args, 72431f09607SAlexandros Batsakis .res_maxsize = CB_OP_RECALLANY_RES_MAXSZ, 72531f09607SAlexandros Batsakis }, 7264aece6a1SBenny Halevy #endif /* CONFIG_NFS_V4_1 */ 7271da177e4SLinus Torvalds }; 7281da177e4SLinus Torvalds 7291da177e4SLinus Torvalds /* 7301da177e4SLinus Torvalds * Define NFS4 callback procedures 7311da177e4SLinus Torvalds */ 7321da177e4SLinus Torvalds static struct svc_procedure nfs4_callback_procedures1[] = { 7331da177e4SLinus Torvalds [CB_NULL] = { 7341da177e4SLinus Torvalds .pc_func = nfs4_callback_null, 7351da177e4SLinus Torvalds .pc_decode = (kxdrproc_t)nfs4_decode_void, 7361da177e4SLinus Torvalds .pc_encode = (kxdrproc_t)nfs4_encode_void, 7371da177e4SLinus Torvalds .pc_xdrressize = 1, 7381da177e4SLinus Torvalds }, 7391da177e4SLinus Torvalds [CB_COMPOUND] = { 7401da177e4SLinus Torvalds .pc_func = nfs4_callback_compound, 7411da177e4SLinus Torvalds .pc_encode = (kxdrproc_t)nfs4_encode_void, 7421da177e4SLinus Torvalds .pc_argsize = 256, 7431da177e4SLinus Torvalds .pc_ressize = 256, 7441da177e4SLinus Torvalds .pc_xdrressize = NFS4_CALLBACK_BUFSIZE, 7451da177e4SLinus Torvalds } 7461da177e4SLinus Torvalds }; 7471da177e4SLinus Torvalds 7481da177e4SLinus Torvalds struct svc_version nfs4_callback_version1 = { 7491da177e4SLinus Torvalds .vs_vers = 1, 7501da177e4SLinus Torvalds .vs_nproc = ARRAY_SIZE(nfs4_callback_procedures1), 7511da177e4SLinus Torvalds .vs_proc = nfs4_callback_procedures1, 7521da177e4SLinus Torvalds .vs_xdrsize = NFS4_CALLBACK_XDRSIZE, 7531da177e4SLinus Torvalds .vs_dispatch = NULL, 7541da177e4SLinus Torvalds }; 7551da177e4SLinus Torvalds 75607bccc2dSAlexandros Batsakis struct svc_version nfs4_callback_version4 = { 75707bccc2dSAlexandros Batsakis .vs_vers = 4, 75807bccc2dSAlexandros Batsakis .vs_nproc = ARRAY_SIZE(nfs4_callback_procedures1), 75907bccc2dSAlexandros Batsakis .vs_proc = nfs4_callback_procedures1, 76007bccc2dSAlexandros Batsakis .vs_xdrsize = NFS4_CALLBACK_XDRSIZE, 76107bccc2dSAlexandros Batsakis .vs_dispatch = NULL, 76207bccc2dSAlexandros Batsakis }; 763