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) 27b9efa1b2SAndy Adamson #define CB_OP_RECALLSLOT_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ) 284aece6a1SBenny Halevy #endif /* CONFIG_NFS_V4_1 */ 294aece6a1SBenny Halevy 301da177e4SLinus Torvalds #define NFSDBG_FACILITY NFSDBG_CALLBACK 311da177e4SLinus Torvalds 3231d2b435SAndy Adamson /* Internal error code */ 3331d2b435SAndy Adamson #define NFS4ERR_RESOURCE_HDR 11050 3431d2b435SAndy Adamson 35e6f684f6SAl Viro typedef __be32 (*callback_process_op_t)(void *, void *); 36e6f684f6SAl Viro typedef __be32 (*callback_decode_arg_t)(struct svc_rqst *, struct xdr_stream *, void *); 37e6f684f6SAl Viro typedef __be32 (*callback_encode_res_t)(struct svc_rqst *, struct xdr_stream *, void *); 381da177e4SLinus Torvalds 391da177e4SLinus Torvalds 401da177e4SLinus Torvalds struct callback_op { 411da177e4SLinus Torvalds callback_process_op_t process_op; 421da177e4SLinus Torvalds callback_decode_arg_t decode_args; 431da177e4SLinus Torvalds callback_encode_res_t encode_res; 441da177e4SLinus Torvalds long res_maxsize; 451da177e4SLinus Torvalds }; 461da177e4SLinus Torvalds 471da177e4SLinus Torvalds static struct callback_op callback_ops[]; 481da177e4SLinus Torvalds 497111c66eSAl Viro static __be32 nfs4_callback_null(struct svc_rqst *rqstp, void *argp, void *resp) 501da177e4SLinus Torvalds { 511da177e4SLinus Torvalds return htonl(NFS4_OK); 521da177e4SLinus Torvalds } 531da177e4SLinus Torvalds 545704fdebSAl Viro static int nfs4_decode_void(struct svc_rqst *rqstp, __be32 *p, void *dummy) 551da177e4SLinus Torvalds { 561da177e4SLinus Torvalds return xdr_argsize_check(rqstp, p); 571da177e4SLinus Torvalds } 581da177e4SLinus Torvalds 595704fdebSAl Viro static int nfs4_encode_void(struct svc_rqst *rqstp, __be32 *p, void *dummy) 601da177e4SLinus Torvalds { 611da177e4SLinus Torvalds return xdr_ressize_check(rqstp, p); 621da177e4SLinus Torvalds } 631da177e4SLinus Torvalds 645704fdebSAl Viro static __be32 *read_buf(struct xdr_stream *xdr, int nbytes) 651da177e4SLinus Torvalds { 665704fdebSAl Viro __be32 *p; 671da177e4SLinus Torvalds 681da177e4SLinus Torvalds p = xdr_inline_decode(xdr, nbytes); 691da177e4SLinus Torvalds if (unlikely(p == NULL)) 701da177e4SLinus Torvalds printk(KERN_WARNING "NFSv4 callback reply buffer overflowed!\n"); 711da177e4SLinus Torvalds return p; 721da177e4SLinus Torvalds } 731da177e4SLinus Torvalds 74e6f684f6SAl Viro static __be32 decode_string(struct xdr_stream *xdr, unsigned int *len, const char **str) 751da177e4SLinus Torvalds { 765704fdebSAl Viro __be32 *p; 771da177e4SLinus Torvalds 781da177e4SLinus Torvalds p = read_buf(xdr, 4); 791da177e4SLinus Torvalds if (unlikely(p == NULL)) 801da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 811da177e4SLinus Torvalds *len = ntohl(*p); 821da177e4SLinus Torvalds 831da177e4SLinus Torvalds if (*len != 0) { 841da177e4SLinus Torvalds p = read_buf(xdr, *len); 851da177e4SLinus Torvalds if (unlikely(p == NULL)) 861da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 871da177e4SLinus Torvalds *str = (const char *)p; 881da177e4SLinus Torvalds } else 891da177e4SLinus Torvalds *str = NULL; 901da177e4SLinus Torvalds 911da177e4SLinus Torvalds return 0; 921da177e4SLinus Torvalds } 931da177e4SLinus Torvalds 94e6f684f6SAl Viro static __be32 decode_fh(struct xdr_stream *xdr, struct nfs_fh *fh) 951da177e4SLinus Torvalds { 965704fdebSAl Viro __be32 *p; 971da177e4SLinus Torvalds 981da177e4SLinus Torvalds p = read_buf(xdr, 4); 991da177e4SLinus Torvalds if (unlikely(p == NULL)) 1001da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 1011da177e4SLinus Torvalds fh->size = ntohl(*p); 1021da177e4SLinus Torvalds if (fh->size > NFS4_FHSIZE) 1031da177e4SLinus Torvalds return htonl(NFS4ERR_BADHANDLE); 1041da177e4SLinus Torvalds p = read_buf(xdr, fh->size); 1051da177e4SLinus Torvalds if (unlikely(p == NULL)) 1061da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 1071da177e4SLinus Torvalds memcpy(&fh->data[0], p, fh->size); 1081da177e4SLinus Torvalds memset(&fh->data[fh->size], 0, sizeof(fh->data) - fh->size); 1091da177e4SLinus Torvalds return 0; 1101da177e4SLinus Torvalds } 1111da177e4SLinus Torvalds 112e6f684f6SAl Viro static __be32 decode_bitmap(struct xdr_stream *xdr, uint32_t *bitmap) 1131da177e4SLinus Torvalds { 1145704fdebSAl Viro __be32 *p; 1151da177e4SLinus Torvalds unsigned int attrlen; 1161da177e4SLinus Torvalds 1171da177e4SLinus Torvalds p = read_buf(xdr, 4); 1181da177e4SLinus Torvalds if (unlikely(p == NULL)) 1191da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 1201da177e4SLinus Torvalds attrlen = ntohl(*p); 1211da177e4SLinus Torvalds p = read_buf(xdr, attrlen << 2); 1221da177e4SLinus Torvalds if (unlikely(p == NULL)) 1231da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 1241da177e4SLinus Torvalds if (likely(attrlen > 0)) 1251da177e4SLinus Torvalds bitmap[0] = ntohl(*p++); 1261da177e4SLinus Torvalds if (attrlen > 1) 1271da177e4SLinus Torvalds bitmap[1] = ntohl(*p); 1281da177e4SLinus Torvalds return 0; 1291da177e4SLinus Torvalds } 1301da177e4SLinus Torvalds 131e6f684f6SAl Viro static __be32 decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) 1321da177e4SLinus Torvalds { 1335704fdebSAl Viro __be32 *p; 1341da177e4SLinus Torvalds 1351da177e4SLinus Torvalds p = read_buf(xdr, 16); 1361da177e4SLinus Torvalds if (unlikely(p == NULL)) 1371da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 1381da177e4SLinus Torvalds memcpy(stateid->data, p, 16); 1391da177e4SLinus Torvalds return 0; 1401da177e4SLinus Torvalds } 1411da177e4SLinus Torvalds 142e6f684f6SAl Viro static __be32 decode_compound_hdr_arg(struct xdr_stream *xdr, struct cb_compound_hdr_arg *hdr) 1431da177e4SLinus Torvalds { 1445704fdebSAl Viro __be32 *p; 145e6f684f6SAl Viro __be32 status; 1461da177e4SLinus Torvalds 1471da177e4SLinus Torvalds status = decode_string(xdr, &hdr->taglen, &hdr->tag); 1481da177e4SLinus Torvalds if (unlikely(status != 0)) 1491da177e4SLinus Torvalds return status; 1501da177e4SLinus Torvalds /* We do not like overly long tags! */ 1515cce428dSChuck Lever if (hdr->taglen > CB_OP_TAGLEN_MAXSZ - 12) { 1521da177e4SLinus Torvalds printk("NFSv4 CALLBACK %s: client sent tag of length %u\n", 1533110ff80SHarvey Harrison __func__, hdr->taglen); 1541da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 1551da177e4SLinus Torvalds } 1561da177e4SLinus Torvalds p = read_buf(xdr, 12); 1571da177e4SLinus Torvalds if (unlikely(p == NULL)) 1581da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 159b8f2ef84SBenny Halevy hdr->minorversion = ntohl(*p++); 16048a9e2d2SBenny Halevy /* Check minor version is zero or one. */ 16148a9e2d2SBenny Halevy if (hdr->minorversion <= 1) { 16248a9e2d2SBenny Halevy p++; /* skip callback_ident */ 16348a9e2d2SBenny Halevy } else { 164b8f2ef84SBenny Halevy printk(KERN_WARNING "%s: NFSv4 server callback with " 165b8f2ef84SBenny Halevy "illegal minor version %u!\n", 166b8f2ef84SBenny Halevy __func__, hdr->minorversion); 1671da177e4SLinus Torvalds return htonl(NFS4ERR_MINOR_VERS_MISMATCH); 1681da177e4SLinus Torvalds } 1691da177e4SLinus Torvalds hdr->nops = ntohl(*p); 170b8f2ef84SBenny Halevy dprintk("%s: minorversion %d nops %d\n", __func__, 171b8f2ef84SBenny Halevy hdr->minorversion, hdr->nops); 1721da177e4SLinus Torvalds return 0; 1731da177e4SLinus Torvalds } 1741da177e4SLinus Torvalds 175e6f684f6SAl Viro static __be32 decode_op_hdr(struct xdr_stream *xdr, unsigned int *op) 1761da177e4SLinus Torvalds { 1775704fdebSAl Viro __be32 *p; 1781da177e4SLinus Torvalds p = read_buf(xdr, 4); 1791da177e4SLinus Torvalds if (unlikely(p == NULL)) 18031d2b435SAndy Adamson return htonl(NFS4ERR_RESOURCE_HDR); 1811da177e4SLinus Torvalds *op = ntohl(*p); 1821da177e4SLinus Torvalds return 0; 1831da177e4SLinus Torvalds } 1841da177e4SLinus Torvalds 185e6f684f6SAl Viro static __be32 decode_getattr_args(struct svc_rqst *rqstp, struct xdr_stream *xdr, struct cb_getattrargs *args) 1861da177e4SLinus Torvalds { 187e6f684f6SAl Viro __be32 status; 1881da177e4SLinus Torvalds 1891da177e4SLinus Torvalds status = decode_fh(xdr, &args->fh); 1901da177e4SLinus Torvalds if (unlikely(status != 0)) 1911da177e4SLinus Torvalds goto out; 192671beed7SChuck Lever args->addr = svc_addr(rqstp); 1931da177e4SLinus Torvalds status = decode_bitmap(xdr, args->bitmap); 1941da177e4SLinus Torvalds out: 1953110ff80SHarvey Harrison dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); 1961da177e4SLinus Torvalds return status; 1971da177e4SLinus Torvalds } 1981da177e4SLinus Torvalds 199e6f684f6SAl Viro static __be32 decode_recall_args(struct svc_rqst *rqstp, struct xdr_stream *xdr, struct cb_recallargs *args) 2001da177e4SLinus Torvalds { 2015704fdebSAl Viro __be32 *p; 202e6f684f6SAl Viro __be32 status; 2031da177e4SLinus Torvalds 204c1d35866SChuck Lever args->addr = svc_addr(rqstp); 2051da177e4SLinus Torvalds status = decode_stateid(xdr, &args->stateid); 2061da177e4SLinus Torvalds if (unlikely(status != 0)) 2071da177e4SLinus Torvalds goto out; 2081da177e4SLinus Torvalds p = read_buf(xdr, 4); 2091da177e4SLinus Torvalds if (unlikely(p == NULL)) { 2101da177e4SLinus Torvalds status = htonl(NFS4ERR_RESOURCE); 2111da177e4SLinus Torvalds goto out; 2121da177e4SLinus Torvalds } 2131da177e4SLinus Torvalds args->truncate = ntohl(*p); 2141da177e4SLinus Torvalds status = decode_fh(xdr, &args->fh); 2151da177e4SLinus Torvalds out: 2163110ff80SHarvey Harrison dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); 2173873bc50SAlexey Dobriyan return status; 2181da177e4SLinus Torvalds } 2191da177e4SLinus Torvalds 2204aece6a1SBenny Halevy #if defined(CONFIG_NFS_V4_1) 2214aece6a1SBenny Halevy 2229733f0d9SAndy Adamson static __be32 decode_sessionid(struct xdr_stream *xdr, 2234aece6a1SBenny Halevy struct nfs4_sessionid *sid) 2244aece6a1SBenny Halevy { 2259733f0d9SAndy Adamson __be32 *p; 2264aece6a1SBenny Halevy int len = NFS4_MAX_SESSIONID_LEN; 2274aece6a1SBenny Halevy 2284aece6a1SBenny Halevy p = read_buf(xdr, len); 2294aece6a1SBenny Halevy if (unlikely(p == NULL)) 230a419aef8SJoe Perches return htonl(NFS4ERR_RESOURCE); 2314aece6a1SBenny Halevy 2324aece6a1SBenny Halevy memcpy(sid->data, p, len); 2334aece6a1SBenny Halevy return 0; 2344aece6a1SBenny Halevy } 2354aece6a1SBenny Halevy 2369733f0d9SAndy Adamson static __be32 decode_rc_list(struct xdr_stream *xdr, 2374aece6a1SBenny Halevy struct referring_call_list *rc_list) 2384aece6a1SBenny Halevy { 2399733f0d9SAndy Adamson __be32 *p; 2404aece6a1SBenny Halevy int i; 2419733f0d9SAndy Adamson __be32 status; 2424aece6a1SBenny Halevy 2434aece6a1SBenny Halevy status = decode_sessionid(xdr, &rc_list->rcl_sessionid); 2444aece6a1SBenny Halevy if (status) 2454aece6a1SBenny Halevy goto out; 2464aece6a1SBenny Halevy 2474aece6a1SBenny Halevy status = htonl(NFS4ERR_RESOURCE); 2484aece6a1SBenny Halevy p = read_buf(xdr, sizeof(uint32_t)); 2494aece6a1SBenny Halevy if (unlikely(p == NULL)) 2504aece6a1SBenny Halevy goto out; 2514aece6a1SBenny Halevy 2524aece6a1SBenny Halevy rc_list->rcl_nrefcalls = ntohl(*p++); 2534aece6a1SBenny Halevy if (rc_list->rcl_nrefcalls) { 2544aece6a1SBenny Halevy p = read_buf(xdr, 2554aece6a1SBenny Halevy rc_list->rcl_nrefcalls * 2 * sizeof(uint32_t)); 2564aece6a1SBenny Halevy if (unlikely(p == NULL)) 2574aece6a1SBenny Halevy goto out; 2584aece6a1SBenny Halevy rc_list->rcl_refcalls = kmalloc(rc_list->rcl_nrefcalls * 2594aece6a1SBenny Halevy sizeof(*rc_list->rcl_refcalls), 2604aece6a1SBenny Halevy GFP_KERNEL); 2614aece6a1SBenny Halevy if (unlikely(rc_list->rcl_refcalls == NULL)) 2624aece6a1SBenny Halevy goto out; 2634aece6a1SBenny Halevy for (i = 0; i < rc_list->rcl_nrefcalls; i++) { 2644aece6a1SBenny Halevy rc_list->rcl_refcalls[i].rc_sequenceid = ntohl(*p++); 2654aece6a1SBenny Halevy rc_list->rcl_refcalls[i].rc_slotid = ntohl(*p++); 2664aece6a1SBenny Halevy } 2674aece6a1SBenny Halevy } 2684aece6a1SBenny Halevy status = 0; 2694aece6a1SBenny Halevy 2704aece6a1SBenny Halevy out: 2714aece6a1SBenny Halevy return status; 2724aece6a1SBenny Halevy } 2734aece6a1SBenny Halevy 2749733f0d9SAndy Adamson static __be32 decode_cb_sequence_args(struct svc_rqst *rqstp, 2754aece6a1SBenny Halevy struct xdr_stream *xdr, 2764aece6a1SBenny Halevy struct cb_sequenceargs *args) 2774aece6a1SBenny Halevy { 2789733f0d9SAndy Adamson __be32 *p; 2794aece6a1SBenny Halevy int i; 2809733f0d9SAndy Adamson __be32 status; 2814aece6a1SBenny Halevy 2824aece6a1SBenny Halevy status = decode_sessionid(xdr, &args->csa_sessionid); 2834aece6a1SBenny Halevy if (status) 2844aece6a1SBenny Halevy goto out; 2854aece6a1SBenny Halevy 2864aece6a1SBenny Halevy status = htonl(NFS4ERR_RESOURCE); 2874aece6a1SBenny Halevy p = read_buf(xdr, 5 * sizeof(uint32_t)); 2884aece6a1SBenny Halevy if (unlikely(p == NULL)) 2894aece6a1SBenny Halevy goto out; 2904aece6a1SBenny Halevy 29165fc64e5SRicardo Labiaga args->csa_addr = svc_addr(rqstp); 2924aece6a1SBenny Halevy args->csa_sequenceid = ntohl(*p++); 2934aece6a1SBenny Halevy args->csa_slotid = ntohl(*p++); 2944aece6a1SBenny Halevy args->csa_highestslotid = ntohl(*p++); 2954aece6a1SBenny Halevy args->csa_cachethis = ntohl(*p++); 2964aece6a1SBenny Halevy args->csa_nrclists = ntohl(*p++); 2974aece6a1SBenny Halevy args->csa_rclists = NULL; 2984aece6a1SBenny Halevy if (args->csa_nrclists) { 2994aece6a1SBenny Halevy args->csa_rclists = kmalloc(args->csa_nrclists * 3004aece6a1SBenny Halevy sizeof(*args->csa_rclists), 3014aece6a1SBenny Halevy GFP_KERNEL); 3024aece6a1SBenny Halevy if (unlikely(args->csa_rclists == NULL)) 3034aece6a1SBenny Halevy goto out; 3044aece6a1SBenny Halevy 3054aece6a1SBenny Halevy for (i = 0; i < args->csa_nrclists; i++) { 3064aece6a1SBenny Halevy status = decode_rc_list(xdr, &args->csa_rclists[i]); 3074aece6a1SBenny Halevy if (status) 3084aece6a1SBenny Halevy goto out_free; 3094aece6a1SBenny Halevy } 3104aece6a1SBenny Halevy } 3114aece6a1SBenny Halevy status = 0; 3124aece6a1SBenny Halevy 3134aece6a1SBenny Halevy dprintk("%s: sessionid %x:%x:%x:%x sequenceid %u slotid %u " 3144aece6a1SBenny Halevy "highestslotid %u cachethis %d nrclists %u\n", 3154aece6a1SBenny Halevy __func__, 3164aece6a1SBenny Halevy ((u32 *)&args->csa_sessionid)[0], 3174aece6a1SBenny Halevy ((u32 *)&args->csa_sessionid)[1], 3184aece6a1SBenny Halevy ((u32 *)&args->csa_sessionid)[2], 3194aece6a1SBenny Halevy ((u32 *)&args->csa_sessionid)[3], 3204aece6a1SBenny Halevy args->csa_sequenceid, args->csa_slotid, 3214aece6a1SBenny Halevy args->csa_highestslotid, args->csa_cachethis, 3224aece6a1SBenny Halevy args->csa_nrclists); 3234aece6a1SBenny Halevy out: 3244aece6a1SBenny Halevy dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); 3254aece6a1SBenny Halevy return status; 3264aece6a1SBenny Halevy 3274aece6a1SBenny Halevy out_free: 3284aece6a1SBenny Halevy for (i = 0; i < args->csa_nrclists; i++) 3294aece6a1SBenny Halevy kfree(args->csa_rclists[i].rcl_refcalls); 3304aece6a1SBenny Halevy kfree(args->csa_rclists); 3314aece6a1SBenny Halevy goto out; 3324aece6a1SBenny Halevy } 3334aece6a1SBenny Halevy 3349733f0d9SAndy Adamson static __be32 decode_recallany_args(struct svc_rqst *rqstp, 33531f09607SAlexandros Batsakis struct xdr_stream *xdr, 33631f09607SAlexandros Batsakis struct cb_recallanyargs *args) 33731f09607SAlexandros Batsakis { 3389733f0d9SAndy Adamson __be32 *p; 33931f09607SAlexandros Batsakis 34031f09607SAlexandros Batsakis args->craa_addr = svc_addr(rqstp); 34131f09607SAlexandros Batsakis p = read_buf(xdr, 4); 34231f09607SAlexandros Batsakis if (unlikely(p == NULL)) 34331f09607SAlexandros Batsakis return htonl(NFS4ERR_BADXDR); 34431f09607SAlexandros Batsakis args->craa_objs_to_keep = ntohl(*p++); 34531f09607SAlexandros Batsakis p = read_buf(xdr, 4); 34631f09607SAlexandros Batsakis if (unlikely(p == NULL)) 34731f09607SAlexandros Batsakis return htonl(NFS4ERR_BADXDR); 34831f09607SAlexandros Batsakis args->craa_type_mask = ntohl(*p); 34931f09607SAlexandros Batsakis 35031f09607SAlexandros Batsakis return 0; 35131f09607SAlexandros Batsakis } 35231f09607SAlexandros Batsakis 3539733f0d9SAndy Adamson static __be32 decode_recallslot_args(struct svc_rqst *rqstp, 354b9efa1b2SAndy Adamson struct xdr_stream *xdr, 355b9efa1b2SAndy Adamson struct cb_recallslotargs *args) 356b9efa1b2SAndy Adamson { 357b9efa1b2SAndy Adamson __be32 *p; 358b9efa1b2SAndy Adamson 359b9efa1b2SAndy Adamson args->crsa_addr = svc_addr(rqstp); 360b9efa1b2SAndy Adamson p = read_buf(xdr, 4); 361b9efa1b2SAndy Adamson if (unlikely(p == NULL)) 362b9efa1b2SAndy Adamson return htonl(NFS4ERR_BADXDR); 363b9efa1b2SAndy Adamson args->crsa_target_max_slots = ntohl(*p++); 364b9efa1b2SAndy Adamson return 0; 365b9efa1b2SAndy Adamson } 366b9efa1b2SAndy Adamson 3674aece6a1SBenny Halevy #endif /* CONFIG_NFS_V4_1 */ 3684aece6a1SBenny Halevy 369e6f684f6SAl Viro static __be32 encode_string(struct xdr_stream *xdr, unsigned int len, const char *str) 3701da177e4SLinus Torvalds { 3715704fdebSAl Viro __be32 *p; 3721da177e4SLinus Torvalds 3731da177e4SLinus Torvalds p = xdr_reserve_space(xdr, 4 + len); 3741da177e4SLinus Torvalds if (unlikely(p == NULL)) 3751da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 3761da177e4SLinus Torvalds xdr_encode_opaque(p, str, len); 3771da177e4SLinus Torvalds return 0; 3781da177e4SLinus Torvalds } 3791da177e4SLinus Torvalds 3801da177e4SLinus Torvalds #define CB_SUPPORTED_ATTR0 (FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE) 3811da177e4SLinus Torvalds #define CB_SUPPORTED_ATTR1 (FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY) 3825704fdebSAl Viro static __be32 encode_attr_bitmap(struct xdr_stream *xdr, const uint32_t *bitmap, __be32 **savep) 3831da177e4SLinus Torvalds { 3845704fdebSAl Viro __be32 bm[2]; 3855704fdebSAl Viro __be32 *p; 3861da177e4SLinus Torvalds 3871da177e4SLinus Torvalds bm[0] = htonl(bitmap[0] & CB_SUPPORTED_ATTR0); 3881da177e4SLinus Torvalds bm[1] = htonl(bitmap[1] & CB_SUPPORTED_ATTR1); 3891da177e4SLinus Torvalds if (bm[1] != 0) { 3901da177e4SLinus Torvalds p = xdr_reserve_space(xdr, 16); 3911da177e4SLinus Torvalds if (unlikely(p == NULL)) 3921da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 3931da177e4SLinus Torvalds *p++ = htonl(2); 3941da177e4SLinus Torvalds *p++ = bm[0]; 3951da177e4SLinus Torvalds *p++ = bm[1]; 3961da177e4SLinus Torvalds } else if (bm[0] != 0) { 3971da177e4SLinus Torvalds p = xdr_reserve_space(xdr, 12); 3981da177e4SLinus Torvalds if (unlikely(p == NULL)) 3991da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 4001da177e4SLinus Torvalds *p++ = htonl(1); 4011da177e4SLinus Torvalds *p++ = bm[0]; 4021da177e4SLinus Torvalds } else { 4031da177e4SLinus Torvalds p = xdr_reserve_space(xdr, 8); 4041da177e4SLinus Torvalds if (unlikely(p == NULL)) 4051da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 4061da177e4SLinus Torvalds *p++ = htonl(0); 4071da177e4SLinus Torvalds } 4081da177e4SLinus Torvalds *savep = p; 4091da177e4SLinus Torvalds return 0; 4101da177e4SLinus Torvalds } 4111da177e4SLinus Torvalds 412e6f684f6SAl Viro static __be32 encode_attr_change(struct xdr_stream *xdr, const uint32_t *bitmap, uint64_t change) 4131da177e4SLinus Torvalds { 4145704fdebSAl Viro __be32 *p; 4151da177e4SLinus Torvalds 4161da177e4SLinus Torvalds if (!(bitmap[0] & FATTR4_WORD0_CHANGE)) 4171da177e4SLinus Torvalds return 0; 4181da177e4SLinus Torvalds p = xdr_reserve_space(xdr, 8); 41990dc7d27SHarvey Harrison if (unlikely(!p)) 4201da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 4211da177e4SLinus Torvalds p = xdr_encode_hyper(p, change); 4221da177e4SLinus Torvalds return 0; 4231da177e4SLinus Torvalds } 4241da177e4SLinus Torvalds 425e6f684f6SAl Viro static __be32 encode_attr_size(struct xdr_stream *xdr, const uint32_t *bitmap, uint64_t size) 4261da177e4SLinus Torvalds { 4275704fdebSAl Viro __be32 *p; 4281da177e4SLinus Torvalds 4291da177e4SLinus Torvalds if (!(bitmap[0] & FATTR4_WORD0_SIZE)) 4301da177e4SLinus Torvalds return 0; 4311da177e4SLinus Torvalds p = xdr_reserve_space(xdr, 8); 43290dc7d27SHarvey Harrison if (unlikely(!p)) 4331da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 4341da177e4SLinus Torvalds p = xdr_encode_hyper(p, size); 4351da177e4SLinus Torvalds return 0; 4361da177e4SLinus Torvalds } 4371da177e4SLinus Torvalds 438e6f684f6SAl Viro static __be32 encode_attr_time(struct xdr_stream *xdr, const struct timespec *time) 4391da177e4SLinus Torvalds { 4405704fdebSAl Viro __be32 *p; 4411da177e4SLinus Torvalds 4421da177e4SLinus Torvalds p = xdr_reserve_space(xdr, 12); 44390dc7d27SHarvey Harrison if (unlikely(!p)) 4441da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 4451da177e4SLinus Torvalds p = xdr_encode_hyper(p, time->tv_sec); 4461da177e4SLinus Torvalds *p = htonl(time->tv_nsec); 4471da177e4SLinus Torvalds return 0; 4481da177e4SLinus Torvalds } 4491da177e4SLinus Torvalds 450e6f684f6SAl Viro static __be32 encode_attr_ctime(struct xdr_stream *xdr, const uint32_t *bitmap, const struct timespec *time) 4511da177e4SLinus Torvalds { 4521da177e4SLinus Torvalds if (!(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) 4531da177e4SLinus Torvalds return 0; 4541da177e4SLinus Torvalds return encode_attr_time(xdr,time); 4551da177e4SLinus Torvalds } 4561da177e4SLinus Torvalds 457e6f684f6SAl Viro static __be32 encode_attr_mtime(struct xdr_stream *xdr, const uint32_t *bitmap, const struct timespec *time) 4581da177e4SLinus Torvalds { 4591da177e4SLinus Torvalds if (!(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) 4601da177e4SLinus Torvalds return 0; 4611da177e4SLinus Torvalds return encode_attr_time(xdr,time); 4621da177e4SLinus Torvalds } 4631da177e4SLinus Torvalds 464e6f684f6SAl Viro static __be32 encode_compound_hdr_res(struct xdr_stream *xdr, struct cb_compound_hdr_res *hdr) 4651da177e4SLinus Torvalds { 466e6f684f6SAl Viro __be32 status; 4671da177e4SLinus Torvalds 4681da177e4SLinus Torvalds hdr->status = xdr_reserve_space(xdr, 4); 4691da177e4SLinus Torvalds if (unlikely(hdr->status == NULL)) 4701da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 4711da177e4SLinus Torvalds status = encode_string(xdr, hdr->taglen, hdr->tag); 4721da177e4SLinus Torvalds if (unlikely(status != 0)) 4731da177e4SLinus Torvalds return status; 4741da177e4SLinus Torvalds hdr->nops = xdr_reserve_space(xdr, 4); 4751da177e4SLinus Torvalds if (unlikely(hdr->nops == NULL)) 4761da177e4SLinus Torvalds return htonl(NFS4ERR_RESOURCE); 4771da177e4SLinus Torvalds return 0; 4781da177e4SLinus Torvalds } 4791da177e4SLinus Torvalds 480e6f684f6SAl Viro static __be32 encode_op_hdr(struct xdr_stream *xdr, uint32_t op, __be32 res) 4811da177e4SLinus Torvalds { 4825704fdebSAl Viro __be32 *p; 4831da177e4SLinus Torvalds 4841da177e4SLinus Torvalds p = xdr_reserve_space(xdr, 8); 4851da177e4SLinus Torvalds if (unlikely(p == NULL)) 48631d2b435SAndy Adamson return htonl(NFS4ERR_RESOURCE_HDR); 4871da177e4SLinus Torvalds *p++ = htonl(op); 4881da177e4SLinus Torvalds *p = res; 4891da177e4SLinus Torvalds return 0; 4901da177e4SLinus Torvalds } 4911da177e4SLinus Torvalds 492e6f684f6SAl Viro static __be32 encode_getattr_res(struct svc_rqst *rqstp, struct xdr_stream *xdr, const struct cb_getattrres *res) 4931da177e4SLinus Torvalds { 4945704fdebSAl Viro __be32 *savep = NULL; 495e6f684f6SAl Viro __be32 status = res->status; 4961da177e4SLinus Torvalds 4971da177e4SLinus Torvalds if (unlikely(status != 0)) 4981da177e4SLinus Torvalds goto out; 4991da177e4SLinus Torvalds status = encode_attr_bitmap(xdr, res->bitmap, &savep); 5001da177e4SLinus Torvalds if (unlikely(status != 0)) 5011da177e4SLinus Torvalds goto out; 5021da177e4SLinus Torvalds status = encode_attr_change(xdr, res->bitmap, res->change_attr); 5031da177e4SLinus Torvalds if (unlikely(status != 0)) 5041da177e4SLinus Torvalds goto out; 5051da177e4SLinus Torvalds status = encode_attr_size(xdr, res->bitmap, res->size); 5061da177e4SLinus Torvalds if (unlikely(status != 0)) 5071da177e4SLinus Torvalds goto out; 5081da177e4SLinus Torvalds status = encode_attr_ctime(xdr, res->bitmap, &res->ctime); 5091da177e4SLinus Torvalds if (unlikely(status != 0)) 5101da177e4SLinus Torvalds goto out; 5111da177e4SLinus Torvalds status = encode_attr_mtime(xdr, res->bitmap, &res->mtime); 5121da177e4SLinus Torvalds *savep = htonl((unsigned int)((char *)xdr->p - (char *)(savep+1))); 5131da177e4SLinus Torvalds out: 5143110ff80SHarvey Harrison dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); 5151da177e4SLinus Torvalds return status; 5161da177e4SLinus Torvalds } 5171da177e4SLinus Torvalds 51834bc47c9SBenny Halevy #if defined(CONFIG_NFS_V4_1) 51934bc47c9SBenny Halevy 5209733f0d9SAndy Adamson static __be32 encode_sessionid(struct xdr_stream *xdr, 5214aece6a1SBenny Halevy const struct nfs4_sessionid *sid) 5224aece6a1SBenny Halevy { 5239733f0d9SAndy Adamson __be32 *p; 5244aece6a1SBenny Halevy int len = NFS4_MAX_SESSIONID_LEN; 5254aece6a1SBenny Halevy 5264aece6a1SBenny Halevy p = xdr_reserve_space(xdr, len); 5274aece6a1SBenny Halevy if (unlikely(p == NULL)) 5284aece6a1SBenny Halevy return htonl(NFS4ERR_RESOURCE); 5294aece6a1SBenny Halevy 5304aece6a1SBenny Halevy memcpy(p, sid, len); 5314aece6a1SBenny Halevy return 0; 5324aece6a1SBenny Halevy } 5334aece6a1SBenny Halevy 5349733f0d9SAndy Adamson static __be32 encode_cb_sequence_res(struct svc_rqst *rqstp, 5354aece6a1SBenny Halevy struct xdr_stream *xdr, 5364aece6a1SBenny Halevy const struct cb_sequenceres *res) 5374aece6a1SBenny Halevy { 5389733f0d9SAndy Adamson __be32 *p; 5394aece6a1SBenny Halevy unsigned status = res->csr_status; 5404aece6a1SBenny Halevy 5414aece6a1SBenny Halevy if (unlikely(status != 0)) 5424aece6a1SBenny Halevy goto out; 5434aece6a1SBenny Halevy 5444aece6a1SBenny Halevy encode_sessionid(xdr, &res->csr_sessionid); 5454aece6a1SBenny Halevy 5464aece6a1SBenny Halevy p = xdr_reserve_space(xdr, 4 * sizeof(uint32_t)); 5474aece6a1SBenny Halevy if (unlikely(p == NULL)) 5484aece6a1SBenny Halevy return htonl(NFS4ERR_RESOURCE); 5494aece6a1SBenny Halevy 5504aece6a1SBenny Halevy *p++ = htonl(res->csr_sequenceid); 5514aece6a1SBenny Halevy *p++ = htonl(res->csr_slotid); 5524aece6a1SBenny Halevy *p++ = htonl(res->csr_highestslotid); 5534aece6a1SBenny Halevy *p++ = htonl(res->csr_target_highestslotid); 5544aece6a1SBenny Halevy out: 5554aece6a1SBenny Halevy dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); 5564aece6a1SBenny Halevy return status; 5574aece6a1SBenny Halevy } 5584aece6a1SBenny Halevy 55934bc47c9SBenny Halevy static __be32 56034bc47c9SBenny Halevy preprocess_nfs41_op(int nop, unsigned int op_nr, struct callback_op **op) 56134bc47c9SBenny Halevy { 562281fe15dSBenny Halevy if (op_nr == OP_CB_SEQUENCE) { 563281fe15dSBenny Halevy if (nop != 0) 564281fe15dSBenny Halevy return htonl(NFS4ERR_SEQUENCE_POS); 565281fe15dSBenny Halevy } else { 566281fe15dSBenny Halevy if (nop == 0) 567281fe15dSBenny Halevy return htonl(NFS4ERR_OP_NOT_IN_SESSION); 568281fe15dSBenny Halevy } 569281fe15dSBenny Halevy 57034bc47c9SBenny Halevy switch (op_nr) { 57134bc47c9SBenny Halevy case OP_CB_GETATTR: 57234bc47c9SBenny Halevy case OP_CB_RECALL: 5734aece6a1SBenny Halevy case OP_CB_SEQUENCE: 57431f09607SAlexandros Batsakis case OP_CB_RECALL_ANY: 575b9efa1b2SAndy Adamson case OP_CB_RECALL_SLOT: 57634bc47c9SBenny Halevy *op = &callback_ops[op_nr]; 57734bc47c9SBenny Halevy break; 57834bc47c9SBenny Halevy 57934bc47c9SBenny Halevy case OP_CB_LAYOUTRECALL: 58034bc47c9SBenny Halevy case OP_CB_NOTIFY_DEVICEID: 58134bc47c9SBenny Halevy case OP_CB_NOTIFY: 58234bc47c9SBenny Halevy case OP_CB_PUSH_DELEG: 58334bc47c9SBenny Halevy case OP_CB_RECALLABLE_OBJ_AVAIL: 58434bc47c9SBenny Halevy case OP_CB_WANTS_CANCELLED: 58534bc47c9SBenny Halevy case OP_CB_NOTIFY_LOCK: 58634bc47c9SBenny Halevy return htonl(NFS4ERR_NOTSUPP); 58734bc47c9SBenny Halevy 58834bc47c9SBenny Halevy default: 58934bc47c9SBenny Halevy return htonl(NFS4ERR_OP_ILLEGAL); 59034bc47c9SBenny Halevy } 59134bc47c9SBenny Halevy 59234bc47c9SBenny Halevy return htonl(NFS_OK); 59334bc47c9SBenny Halevy } 59434bc47c9SBenny Halevy 59534bc47c9SBenny Halevy #else /* CONFIG_NFS_V4_1 */ 59634bc47c9SBenny Halevy 59734bc47c9SBenny Halevy static __be32 59834bc47c9SBenny Halevy preprocess_nfs41_op(int nop, unsigned int op_nr, struct callback_op **op) 59934bc47c9SBenny Halevy { 60034bc47c9SBenny Halevy return htonl(NFS4ERR_MINOR_VERS_MISMATCH); 60134bc47c9SBenny Halevy } 60234bc47c9SBenny Halevy 60334bc47c9SBenny Halevy #endif /* CONFIG_NFS_V4_1 */ 60434bc47c9SBenny Halevy 60534bc47c9SBenny Halevy static __be32 60634bc47c9SBenny Halevy preprocess_nfs4_op(unsigned int op_nr, struct callback_op **op) 60734bc47c9SBenny Halevy { 60834bc47c9SBenny Halevy switch (op_nr) { 60934bc47c9SBenny Halevy case OP_CB_GETATTR: 61034bc47c9SBenny Halevy case OP_CB_RECALL: 61134bc47c9SBenny Halevy *op = &callback_ops[op_nr]; 61234bc47c9SBenny Halevy break; 61334bc47c9SBenny Halevy default: 61434bc47c9SBenny Halevy return htonl(NFS4ERR_OP_ILLEGAL); 61534bc47c9SBenny Halevy } 61634bc47c9SBenny Halevy 61734bc47c9SBenny Halevy return htonl(NFS_OK); 61834bc47c9SBenny Halevy } 61934bc47c9SBenny Halevy 62034bc47c9SBenny Halevy static __be32 process_op(uint32_t minorversion, int nop, 62134bc47c9SBenny Halevy struct svc_rqst *rqstp, 6221da177e4SLinus Torvalds struct xdr_stream *xdr_in, void *argp, 6234911096fSAndy Adamson struct xdr_stream *xdr_out, void *resp, int* drc_status) 6241da177e4SLinus Torvalds { 625a162a6b8STrond Myklebust struct callback_op *op = &callback_ops[0]; 62631d2b435SAndy Adamson unsigned int op_nr; 62734bc47c9SBenny Halevy __be32 status; 6281da177e4SLinus Torvalds long maxlen; 629e6f684f6SAl Viro __be32 res; 6301da177e4SLinus Torvalds 6313110ff80SHarvey Harrison dprintk("%s: start\n", __func__); 6321da177e4SLinus Torvalds status = decode_op_hdr(xdr_in, &op_nr); 63331d2b435SAndy Adamson if (unlikely(status)) 63431d2b435SAndy Adamson return status; 6351da177e4SLinus Torvalds 63634bc47c9SBenny Halevy dprintk("%s: minorversion=%d nop=%d op_nr=%u\n", 63734bc47c9SBenny Halevy __func__, minorversion, nop, op_nr); 63834bc47c9SBenny Halevy 63934bc47c9SBenny Halevy status = minorversion ? preprocess_nfs41_op(nop, op_nr, &op) : 64034bc47c9SBenny Halevy preprocess_nfs4_op(op_nr, &op); 64134bc47c9SBenny Halevy if (status == htonl(NFS4ERR_OP_ILLEGAL)) 64234bc47c9SBenny Halevy op_nr = OP_CB_ILLEGAL; 643b92b3019SAndy Adamson if (status) 644b92b3019SAndy Adamson goto encode_hdr; 64531d2b435SAndy Adamson 6464911096fSAndy Adamson if (*drc_status) { 6474911096fSAndy Adamson status = *drc_status; 6484911096fSAndy Adamson goto encode_hdr; 6494911096fSAndy Adamson } 6504911096fSAndy Adamson 6511da177e4SLinus Torvalds maxlen = xdr_out->end - xdr_out->p; 6521da177e4SLinus Torvalds if (maxlen > 0 && maxlen < PAGE_SIZE) { 6531da177e4SLinus Torvalds status = op->decode_args(rqstp, xdr_in, argp); 654e95e60daSAndy Adamson if (likely(status == 0)) 6551da177e4SLinus Torvalds status = op->process_op(argp, resp); 6561da177e4SLinus Torvalds } else 6571da177e4SLinus Torvalds status = htonl(NFS4ERR_RESOURCE); 6581da177e4SLinus Torvalds 6594911096fSAndy Adamson /* Only set by OP_CB_SEQUENCE processing */ 6604911096fSAndy Adamson if (status == htonl(NFS4ERR_RETRY_UNCACHED_REP)) { 6614911096fSAndy Adamson *drc_status = status; 6624911096fSAndy Adamson status = 0; 6634911096fSAndy Adamson } 6644911096fSAndy Adamson 665b92b3019SAndy Adamson encode_hdr: 6661da177e4SLinus Torvalds res = encode_op_hdr(xdr_out, op_nr, status); 66731d2b435SAndy Adamson if (unlikely(res)) 66831d2b435SAndy Adamson return res; 6691da177e4SLinus Torvalds if (op->encode_res != NULL && status == 0) 6701da177e4SLinus Torvalds status = op->encode_res(rqstp, xdr_out, resp); 6713110ff80SHarvey Harrison dprintk("%s: done, status = %d\n", __func__, ntohl(status)); 6721da177e4SLinus Torvalds return status; 6731da177e4SLinus Torvalds } 6741da177e4SLinus Torvalds 6751da177e4SLinus Torvalds /* 6761da177e4SLinus Torvalds * Decode, process and encode a COMPOUND 6771da177e4SLinus Torvalds */ 6787111c66eSAl Viro static __be32 nfs4_callback_compound(struct svc_rqst *rqstp, void *argp, void *resp) 6791da177e4SLinus Torvalds { 6803a6258e1STrond Myklebust struct cb_compound_hdr_arg hdr_arg = { 0 }; 6813a6258e1STrond Myklebust struct cb_compound_hdr_res hdr_res = { NULL }; 6821da177e4SLinus Torvalds struct xdr_stream xdr_in, xdr_out; 6835704fdebSAl Viro __be32 *p; 6844911096fSAndy Adamson __be32 status, drc_status = 0; 6853a6258e1STrond Myklebust unsigned int nops = 0; 6861da177e4SLinus Torvalds 6873110ff80SHarvey Harrison dprintk("%s: start\n", __func__); 6881da177e4SLinus Torvalds 6891da177e4SLinus Torvalds xdr_init_decode(&xdr_in, &rqstp->rq_arg, rqstp->rq_arg.head[0].iov_base); 6901da177e4SLinus Torvalds 6915704fdebSAl Viro p = (__be32*)((char *)rqstp->rq_res.head[0].iov_base + rqstp->rq_res.head[0].iov_len); 6921da177e4SLinus Torvalds xdr_init_encode(&xdr_out, &rqstp->rq_res, p); 6931da177e4SLinus Torvalds 6943a6258e1STrond Myklebust status = decode_compound_hdr_arg(&xdr_in, &hdr_arg); 6953a6258e1STrond Myklebust if (status == __constant_htonl(NFS4ERR_RESOURCE)) 6963a6258e1STrond Myklebust return rpc_garbage_args; 6973a6258e1STrond Myklebust 6981da177e4SLinus Torvalds hdr_res.taglen = hdr_arg.taglen; 6991da177e4SLinus Torvalds hdr_res.tag = hdr_arg.tag; 7003a6258e1STrond Myklebust if (encode_compound_hdr_res(&xdr_out, &hdr_res) != 0) 7013a6258e1STrond Myklebust return rpc_system_err; 7021da177e4SLinus Torvalds 7033a6258e1STrond Myklebust while (status == 0 && nops != hdr_arg.nops) { 7044911096fSAndy Adamson status = process_op(hdr_arg.minorversion, nops, rqstp, 7054911096fSAndy Adamson &xdr_in, argp, &xdr_out, resp, &drc_status); 7061da177e4SLinus Torvalds nops++; 7071da177e4SLinus Torvalds } 7083a6258e1STrond Myklebust 70931d2b435SAndy Adamson /* Buffer overflow in decode_ops_hdr or encode_ops_hdr. Return 71031d2b435SAndy Adamson * resource error in cb_compound status without returning op */ 71131d2b435SAndy Adamson if (unlikely(status == htonl(NFS4ERR_RESOURCE_HDR))) { 71231d2b435SAndy Adamson status = htonl(NFS4ERR_RESOURCE); 71331d2b435SAndy Adamson nops--; 71431d2b435SAndy Adamson } 71531d2b435SAndy Adamson 7161da177e4SLinus Torvalds *hdr_res.status = status; 7171da177e4SLinus Torvalds *hdr_res.nops = htonl(nops); 7183110ff80SHarvey Harrison dprintk("%s: done, status = %u\n", __func__, ntohl(status)); 7191da177e4SLinus Torvalds return rpc_success; 7201da177e4SLinus Torvalds } 7211da177e4SLinus Torvalds 7221da177e4SLinus Torvalds /* 7231da177e4SLinus Torvalds * Define NFS4 callback COMPOUND ops. 7241da177e4SLinus Torvalds */ 7251da177e4SLinus Torvalds static struct callback_op callback_ops[] = { 7261da177e4SLinus Torvalds [0] = { 7271da177e4SLinus Torvalds .res_maxsize = CB_OP_HDR_RES_MAXSZ, 7281da177e4SLinus Torvalds }, 7291da177e4SLinus Torvalds [OP_CB_GETATTR] = { 7301da177e4SLinus Torvalds .process_op = (callback_process_op_t)nfs4_callback_getattr, 7311da177e4SLinus Torvalds .decode_args = (callback_decode_arg_t)decode_getattr_args, 7321da177e4SLinus Torvalds .encode_res = (callback_encode_res_t)encode_getattr_res, 7331da177e4SLinus Torvalds .res_maxsize = CB_OP_GETATTR_RES_MAXSZ, 7341da177e4SLinus Torvalds }, 7351da177e4SLinus Torvalds [OP_CB_RECALL] = { 7361da177e4SLinus Torvalds .process_op = (callback_process_op_t)nfs4_callback_recall, 7371da177e4SLinus Torvalds .decode_args = (callback_decode_arg_t)decode_recall_args, 7381da177e4SLinus Torvalds .res_maxsize = CB_OP_RECALL_RES_MAXSZ, 7394aece6a1SBenny Halevy }, 7404aece6a1SBenny Halevy #if defined(CONFIG_NFS_V4_1) 7414aece6a1SBenny Halevy [OP_CB_SEQUENCE] = { 7424aece6a1SBenny Halevy .process_op = (callback_process_op_t)nfs4_callback_sequence, 7434aece6a1SBenny Halevy .decode_args = (callback_decode_arg_t)decode_cb_sequence_args, 7444aece6a1SBenny Halevy .encode_res = (callback_encode_res_t)encode_cb_sequence_res, 7454aece6a1SBenny Halevy .res_maxsize = CB_OP_SEQUENCE_RES_MAXSZ, 7464aece6a1SBenny Halevy }, 74731f09607SAlexandros Batsakis [OP_CB_RECALL_ANY] = { 74831f09607SAlexandros Batsakis .process_op = (callback_process_op_t)nfs4_callback_recallany, 74931f09607SAlexandros Batsakis .decode_args = (callback_decode_arg_t)decode_recallany_args, 75031f09607SAlexandros Batsakis .res_maxsize = CB_OP_RECALLANY_RES_MAXSZ, 75131f09607SAlexandros Batsakis }, 752b9efa1b2SAndy Adamson [OP_CB_RECALL_SLOT] = { 753b9efa1b2SAndy Adamson .process_op = (callback_process_op_t)nfs4_callback_recallslot, 754b9efa1b2SAndy Adamson .decode_args = (callback_decode_arg_t)decode_recallslot_args, 755b9efa1b2SAndy Adamson .res_maxsize = CB_OP_RECALLSLOT_RES_MAXSZ, 756b9efa1b2SAndy Adamson }, 7574aece6a1SBenny Halevy #endif /* CONFIG_NFS_V4_1 */ 7581da177e4SLinus Torvalds }; 7591da177e4SLinus Torvalds 7601da177e4SLinus Torvalds /* 7611da177e4SLinus Torvalds * Define NFS4 callback procedures 7621da177e4SLinus Torvalds */ 7631da177e4SLinus Torvalds static struct svc_procedure nfs4_callback_procedures1[] = { 7641da177e4SLinus Torvalds [CB_NULL] = { 7651da177e4SLinus Torvalds .pc_func = nfs4_callback_null, 7661da177e4SLinus Torvalds .pc_decode = (kxdrproc_t)nfs4_decode_void, 7671da177e4SLinus Torvalds .pc_encode = (kxdrproc_t)nfs4_encode_void, 7681da177e4SLinus Torvalds .pc_xdrressize = 1, 7691da177e4SLinus Torvalds }, 7701da177e4SLinus Torvalds [CB_COMPOUND] = { 7711da177e4SLinus Torvalds .pc_func = nfs4_callback_compound, 7721da177e4SLinus Torvalds .pc_encode = (kxdrproc_t)nfs4_encode_void, 7731da177e4SLinus Torvalds .pc_argsize = 256, 7741da177e4SLinus Torvalds .pc_ressize = 256, 7751da177e4SLinus Torvalds .pc_xdrressize = NFS4_CALLBACK_BUFSIZE, 7761da177e4SLinus Torvalds } 7771da177e4SLinus Torvalds }; 7781da177e4SLinus Torvalds 7791da177e4SLinus Torvalds struct svc_version nfs4_callback_version1 = { 7801da177e4SLinus Torvalds .vs_vers = 1, 7811da177e4SLinus Torvalds .vs_nproc = ARRAY_SIZE(nfs4_callback_procedures1), 7821da177e4SLinus Torvalds .vs_proc = nfs4_callback_procedures1, 7831da177e4SLinus Torvalds .vs_xdrsize = NFS4_CALLBACK_XDRSIZE, 7841da177e4SLinus Torvalds .vs_dispatch = NULL, 78549697ee7SSteve Dickson .vs_hidden = 1, 7861da177e4SLinus Torvalds }; 7871da177e4SLinus Torvalds 78807bccc2dSAlexandros Batsakis struct svc_version nfs4_callback_version4 = { 78907bccc2dSAlexandros Batsakis .vs_vers = 4, 79007bccc2dSAlexandros Batsakis .vs_nproc = ARRAY_SIZE(nfs4_callback_procedures1), 79107bccc2dSAlexandros Batsakis .vs_proc = nfs4_callback_procedures1, 79207bccc2dSAlexandros Batsakis .vs_xdrsize = NFS4_CALLBACK_XDRSIZE, 79307bccc2dSAlexandros Batsakis .vs_dispatch = NULL, 79407bccc2dSAlexandros Batsakis }; 795