100 	if (!(x = (p==argp->tmp || p == argp->tmpp) ? \
101  		savemem(argp, p, nbytes) :	\
116 	if (nbytes <= (u32)((char *)argp->end - (char *)argp->p)) {	\
117 		p = argp->p;			\
118 		argp->p += XDR_QUADLEN(nbytes);	\
119 	} else if (!(p = read_buf(argp, nbytes))) { \
126 static void next_decode_page(struct nfsd4_compoundargs *argp)  in next_decode_page()  argument
128 	argp->p = page_address(argp->pagelist[0]);  in next_decode_page()
129 	argp->pagelist++;  in next_decode_page()
130 	if (argp->pagelen < PAGE_SIZE) {  in next_decode_page()
131 		argp->end = argp->p + (argp->pagelen>>2);  in next_decode_page()
132 		argp->pagelen = 0;  in next_decode_page()
134 		argp->end = argp->p + (PAGE_SIZE>>2);  in next_decode_page()
135 		argp->pagelen -= PAGE_SIZE;  in next_decode_page()
139 static __be32 *read_buf(struct nfsd4_compoundargs *argp, u32 nbytes)  in read_buf()  argument
144 	unsigned int avail = (char *)argp->end - (char *)argp->p;  in read_buf()
146 	if (avail + argp->pagelen < nbytes)  in read_buf()
151 	if (nbytes <= sizeof(argp->tmp))  in read_buf()
152 		p = argp->tmp;  in read_buf()
154 		kfree(argp->tmpp);  in read_buf()
155 		p = argp->tmpp = kmalloc(nbytes, GFP_KERNEL);  in read_buf()
165 	memcpy(p, argp->p, avail);  in read_buf()
166 	next_decode_page(argp);  in read_buf()
167 	memcpy(((char*)p)+avail, argp->p, (nbytes - avail));  in read_buf()
168 	argp->p += XDR_QUADLEN(nbytes - avail);  in read_buf()
186 svcxdr_tmpalloc(struct nfsd4_compoundargs *argp, u32 len)  in svcxdr_tmpalloc()  argument
193 	tb->next = argp->to_free;  in svcxdr_tmpalloc()
194 	argp->to_free = tb;  in svcxdr_tmpalloc()
206 svcxdr_dupstr(struct nfsd4_compoundargs *argp, void *buf, u32 len)  in svcxdr_dupstr()  argument
208 	char *p = svcxdr_tmpalloc(argp, len + 1);  in svcxdr_dupstr()
227 static char *savemem(struct nfsd4_compoundargs *argp, __be32 *p, int nbytes)  in savemem()  argument
231 	ret = svcxdr_tmpalloc(argp, nbytes);  in savemem()
243 nfsd4_decode_time(struct nfsd4_compoundargs *argp, struct timespec *tv)  in nfsd4_decode_time()  argument
259 nfsd4_decode_bitmap(struct nfsd4_compoundargs *argp, u32 *bmval)  in nfsd4_decode_bitmap()  argument
285 nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval,  in nfsd4_decode_fattr()  argument
295 	if ((status = nfsd4_decode_bitmap(argp, bmval)))  in nfsd4_decode_fattr()
317 		*acl = svcxdr_tmpalloc(argp, nfs4_acl_bytes(nace));  in nfsd4_decode_fattr()
336 				status = nfsd_map_name_to_gid(argp->rqstp,  in nfsd4_decode_fattr()
339 				status = nfsd_map_name_to_uid(argp->rqstp,  in nfsd4_decode_fattr()
360 		if ((status = nfsd_map_name_to_uid(argp->rqstp, buf, dummy32, &iattr->ia_uid)))  in nfsd4_decode_fattr()
371 		if ((status = nfsd_map_name_to_gid(argp->rqstp, buf, dummy32, &iattr->ia_gid)))  in nfsd4_decode_fattr()
382 			status = nfsd4_decode_time(argp, &iattr->ia_atime);  in nfsd4_decode_fattr()
401 			status = nfsd4_decode_time(argp, &iattr->ia_mtime);  in nfsd4_decode_fattr()
432 		label->data = svcxdr_dupstr(argp, buf, dummy32);  in nfsd4_decode_fattr()
449 nfsd4_decode_stateid(struct nfsd4_compoundargs *argp, stateid_t *sid)  in nfsd4_decode_stateid()  argument
461 nfsd4_decode_access(struct nfsd4_compoundargs *argp, struct nfsd4_access *access)  in nfsd4_decode_access()  argument
471 static __be32 nfsd4_decode_cb_sec(struct nfsd4_compoundargs *argp, struct nfsd4_cb_sec *cbs)  in nfsd4_decode_cb_sec()  argument
551 static __be32 nfsd4_decode_backchannel_ctl(struct nfsd4_compoundargs *argp, struct nfsd4_backchanne…  in nfsd4_decode_backchannel_ctl()  argument
557 	nfsd4_decode_cb_sec(argp, &bc->bc_cb_sec);  in nfsd4_decode_backchannel_ctl()
562 static __be32 nfsd4_decode_bind_conn_to_session(struct nfsd4_compoundargs *argp, struct nfsd4_bind_…  in nfsd4_decode_bind_conn_to_session()  argument
575 nfsd4_decode_close(struct nfsd4_compoundargs *argp, struct nfsd4_close *close)  in nfsd4_decode_close()  argument
581 	return nfsd4_decode_stateid(argp, &close->cl_stateid);  in nfsd4_decode_close()
588 nfsd4_decode_commit(struct nfsd4_compoundargs *argp, struct nfsd4_commit *commit)  in nfsd4_decode_commit()  argument
600 nfsd4_decode_create(struct nfsd4_compoundargs *argp, struct nfsd4_create *create)  in nfsd4_decode_create()  argument
611 		create->cr_data = svcxdr_dupstr(argp, p, create->cr_datalen);  in nfsd4_decode_create()
635 	status = nfsd4_decode_fattr(argp, create->cr_bmval, &create->cr_iattr,  in nfsd4_decode_create()
644 nfsd4_decode_delegreturn(struct nfsd4_compoundargs *argp, struct nfsd4_delegreturn *dr)  in nfsd4_decode_delegreturn()  argument
646 	return nfsd4_decode_stateid(argp, &dr->dr_stateid);  in nfsd4_decode_delegreturn()
650 nfsd4_decode_getattr(struct nfsd4_compoundargs *argp, struct nfsd4_getattr *getattr)  in nfsd4_decode_getattr()  argument
652 	return nfsd4_decode_bitmap(argp, getattr->ga_bmval);  in nfsd4_decode_getattr()
656 nfsd4_decode_link(struct nfsd4_compoundargs *argp, struct nfsd4_link *link)  in nfsd4_decode_link()  argument
671 nfsd4_decode_lock(struct nfsd4_compoundargs *argp, struct nfsd4_lock *lock)  in nfsd4_decode_lock()  argument
690 		status = nfsd4_decode_stateid(argp, &lock->lk_new_open_stateid);  in nfsd4_decode_lock()
700 		status = nfsd4_decode_stateid(argp, &lock->lk_old_lock_stateid);  in nfsd4_decode_lock()
711 nfsd4_decode_lockt(struct nfsd4_compoundargs *argp, struct nfsd4_lockt *lockt)  in nfsd4_decode_lockt()  argument
730 nfsd4_decode_locku(struct nfsd4_compoundargs *argp, struct nfsd4_locku *locku)  in nfsd4_decode_locku()  argument
739 	status = nfsd4_decode_stateid(argp, &locku->lu_stateid);  in nfsd4_decode_locku()
750 nfsd4_decode_lookup(struct nfsd4_compoundargs *argp, struct nfsd4_lookup *lookup)  in nfsd4_decode_lookup()  argument
764 static __be32 nfsd4_decode_share_access(struct nfsd4_compoundargs *argp, u32 *share_access, u32 *de…  in nfsd4_decode_share_access()  argument
787 	if (!argp->minorversion)  in nfsd4_decode_share_access()
817 static __be32 nfsd4_decode_share_deny(struct nfsd4_compoundargs *argp, u32 *x)  in nfsd4_decode_share_deny()  argument
831 static __be32 nfsd4_decode_opaque(struct nfsd4_compoundargs *argp, struct xdr_netobj *o)  in nfsd4_decode_opaque()  argument
849 nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open)  in nfsd4_decode_open()  argument
863 	status = nfsd4_decode_share_access(argp, &open->op_share_access,  in nfsd4_decode_open()
867 	status = nfsd4_decode_share_deny(argp, &open->op_share_deny);  in nfsd4_decode_open()
872 	status = nfsd4_decode_opaque(argp, &open->op_owner);  in nfsd4_decode_open()
886 			status = nfsd4_decode_fattr(argp, open->op_bmval,  in nfsd4_decode_open()
896 			if (argp->minorversion < 1)  in nfsd4_decode_open()
900 			status = nfsd4_decode_fattr(argp, open->op_bmval,  in nfsd4_decode_open()
931 		status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid);  in nfsd4_decode_open()
943 		if (argp->minorversion < 1)  in nfsd4_decode_open()
948 		if (argp->minorversion < 1)  in nfsd4_decode_open()
950 		status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid);  in nfsd4_decode_open()
962 nfsd4_decode_open_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_open_confirm *open_conf)  in nfsd4_decode_open_confirm()  argument
966 	if (argp->minorversion >= 1)  in nfsd4_decode_open_confirm()
969 	status = nfsd4_decode_stateid(argp, &open_conf->oc_req_stateid);  in nfsd4_decode_open_confirm()
979 nfsd4_decode_open_downgrade(struct nfsd4_compoundargs *argp, struct nfsd4_open_downgrade *open_down)  in nfsd4_decode_open_downgrade()  argument
983 	status = nfsd4_decode_stateid(argp, &open_down->od_stateid);  in nfsd4_decode_open_downgrade()
988 	status = nfsd4_decode_share_access(argp, &open_down->od_share_access,  in nfsd4_decode_open_downgrade()
992 	status = nfsd4_decode_share_deny(argp, &open_down->od_share_deny);  in nfsd4_decode_open_downgrade()
999 nfsd4_decode_putfh(struct nfsd4_compoundargs *argp, struct nfsd4_putfh *putfh)  in nfsd4_decode_putfh()  argument
1014 nfsd4_decode_putpubfh(struct nfsd4_compoundargs *argp, void *p)  in nfsd4_decode_putpubfh()  argument
1016 	if (argp->minorversion == 0)  in nfsd4_decode_putpubfh()
1022 nfsd4_decode_read(struct nfsd4_compoundargs *argp, struct nfsd4_read *read)  in nfsd4_decode_read()  argument
1026 	status = nfsd4_decode_stateid(argp, &read->rd_stateid);  in nfsd4_decode_read()
1037 nfsd4_decode_readdir(struct nfsd4_compoundargs *argp, struct nfsd4_readdir *readdir)  in nfsd4_decode_readdir()  argument
1046 	if ((status = nfsd4_decode_bitmap(argp, readdir->rd_bmval)))  in nfsd4_decode_readdir()
1053 nfsd4_decode_remove(struct nfsd4_compoundargs *argp, struct nfsd4_remove *remove)  in nfsd4_decode_remove()  argument
1068 nfsd4_decode_rename(struct nfsd4_compoundargs *argp, struct nfsd4_rename *rename)  in nfsd4_decode_rename()  argument
1089 nfsd4_decode_renew(struct nfsd4_compoundargs *argp, clientid_t *clientid)  in nfsd4_decode_renew()  argument
1093 	if (argp->minorversion >= 1)  in nfsd4_decode_renew()
1103 nfsd4_decode_secinfo(struct nfsd4_compoundargs *argp,  in nfsd4_decode_secinfo()  argument
1119 nfsd4_decode_secinfo_no_name(struct nfsd4_compoundargs *argp,  in nfsd4_decode_secinfo_no_name()  argument
1130 nfsd4_decode_setattr(struct nfsd4_compoundargs *argp, struct nfsd4_setattr *setattr)  in nfsd4_decode_setattr()  argument
1134 	status = nfsd4_decode_stateid(argp, &setattr->sa_stateid);  in nfsd4_decode_setattr()
1137 	return nfsd4_decode_fattr(argp, setattr->sa_bmval, &setattr->sa_iattr,  in nfsd4_decode_setattr()
1142 nfsd4_decode_setclientid(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid *setclientid)  in nfsd4_decode_setclientid()  argument
1146 	if (argp->minorversion >= 1)  in nfsd4_decode_setclientid()
1152 	status = nfsd4_decode_opaque(argp, &setclientid->se_name);  in nfsd4_decode_setclientid()
1172 nfsd4_decode_setclientid_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid_confirm …  in nfsd4_decode_setclientid_confirm()  argument
1176 	if (argp->minorversion >= 1)  in nfsd4_decode_setclientid_confirm()
1188 nfsd4_decode_verify(struct nfsd4_compoundargs *argp, struct nfsd4_verify *verify)  in nfsd4_decode_verify()  argument
1192 	if ((status = nfsd4_decode_bitmap(argp, verify->ve_bmval)))  in nfsd4_decode_verify()
1207 nfsd4_decode_write(struct nfsd4_compoundargs *argp, struct nfsd4_write *write)  in nfsd4_decode_write()  argument
1213 	status = nfsd4_decode_stateid(argp, &write->wr_stateid);  in nfsd4_decode_write()
1227 	avail = (char*)argp->end - (char*)argp->p;  in nfsd4_decode_write()
1228 	if (avail + argp->pagelen < write->wr_buflen) {  in nfsd4_decode_write()
1235 	write->wr_pagelist = argp->pagelist;  in nfsd4_decode_write()
1244 		argp->pagelist += pages;  in nfsd4_decode_write()
1245 		argp->pagelen -= pages * PAGE_SIZE;  in nfsd4_decode_write()
1248 		argp->p = (__be32 *)page_address(argp->pagelist[0]);  in nfsd4_decode_write()
1249 		argp->pagelist++;  in nfsd4_decode_write()
1250 		argp->end = argp->p + XDR_QUADLEN(PAGE_SIZE);  in nfsd4_decode_write()
1252 	argp->p += XDR_QUADLEN(len);  in nfsd4_decode_write()
1258 nfsd4_decode_release_lockowner(struct nfsd4_compoundargs *argp, struct nfsd4_release_lockowner *rlo…  in nfsd4_decode_release_lockowner()  argument
1262 	if (argp->minorversion >= 1)  in nfsd4_decode_release_lockowner()
1271 	if (argp->minorversion && !zero_clientid(&rlockowner->rl_clientid))  in nfsd4_decode_release_lockowner()
1277 nfsd4_decode_exchange_id(struct nfsd4_compoundargs *argp,  in nfsd4_decode_exchange_id()  argument
1286 	status = nfsd4_decode_opaque(argp, &exid->clname);  in nfsd4_decode_exchange_id()
1381 nfsd4_decode_create_session(struct nfsd4_compoundargs *argp,  in nfsd4_decode_create_session()  argument
1428 	nfsd4_decode_cb_sec(argp, &sess->cb_sec);  in nfsd4_decode_create_session()
1433 nfsd4_decode_destroy_session(struct nfsd4_compoundargs *argp,  in nfsd4_decode_destroy_session()  argument
1444 nfsd4_decode_free_stateid(struct nfsd4_compoundargs *argp,  in nfsd4_decode_free_stateid()  argument
1457 nfsd4_decode_sequence(struct nfsd4_compoundargs *argp,  in nfsd4_decode_sequence()  argument
1473 nfsd4_decode_test_stateid(struct nfsd4_compoundargs *argp, struct nfsd4_test_stateid *test_stateid)  in nfsd4_decode_test_stateid()  argument
1485 		stateid = svcxdr_tmpalloc(argp, sizeof(*stateid));  in nfsd4_decode_test_stateid()
1494 		status = nfsd4_decode_stateid(argp, &stateid->ts_id_stateid);  in nfsd4_decode_test_stateid()
1508 static __be32 nfsd4_decode_destroy_clientid(struct nfsd4_compoundargs *argp, struct nfsd4_destroy_c…  in nfsd4_decode_destroy_clientid()  argument
1518 static __be32 nfsd4_decode_reclaim_complete(struct nfsd4_compoundargs *argp, struct nfsd4_reclaim_c…  in nfsd4_decode_reclaim_complete()  argument
1530 nfsd4_decode_getdeviceinfo(struct nfsd4_compoundargs *argp,  in nfsd4_decode_getdeviceinfo()  argument
1555 nfsd4_decode_layoutget(struct nfsd4_compoundargs *argp,  in nfsd4_decode_layoutget()  argument
1568 	status = nfsd4_decode_stateid(argp, &lgp->lg_sid);  in nfsd4_decode_layoutget()
1579 nfsd4_decode_layoutcommit(struct nfsd4_compoundargs *argp,  in nfsd4_decode_layoutcommit()  argument
1590 	status = nfsd4_decode_stateid(argp, &lcp->lc_sid);  in nfsd4_decode_layoutcommit()
1604 		status = nfsd4_decode_time(argp, &lcp->lc_mtime);  in nfsd4_decode_layoutcommit()
1627 nfsd4_decode_layoutreturn(struct nfsd4_compoundargs *argp,  in nfsd4_decode_layoutreturn()  argument
1642 		status = nfsd4_decode_stateid(argp, &lrp->lr_sid);  in nfsd4_decode_layoutreturn()
1662 nfsd4_decode_fallocate(struct nfsd4_compoundargs *argp,  in nfsd4_decode_fallocate()  argument
1667 	status = nfsd4_decode_stateid(argp, &fallocate->falloc_stateid);  in nfsd4_decode_fallocate()
1679 nfsd4_decode_seek(struct nfsd4_compoundargs *argp, struct nfsd4_seek *seek)  in nfsd4_decode_seek()  argument
1683 	status = nfsd4_decode_stateid(argp, &seek->seek_stateid);  in nfsd4_decode_seek()
1695 nfsd4_decode_noop(struct nfsd4_compoundargs *argp, void *p)  in nfsd4_decode_noop()  argument
1701 nfsd4_decode_notsupp(struct nfsd4_compoundargs *argp, void *p)  in nfsd4_decode_notsupp()  argument
1706 typedef __be32(*nfsd4_dec)(struct nfsd4_compoundargs *argp, void *);
1792 nfsd4_opnum_in_range(struct nfsd4_compoundargs *argp, struct nfsd4_op *op)  in nfsd4_opnum_in_range()  argument
1796 	else if (argp->minorversion == 0 && op->opnum > LAST_NFS40_OP)  in nfsd4_opnum_in_range()
1798 	else if (argp->minorversion == 1 && op->opnum > LAST_NFS41_OP)  in nfsd4_opnum_in_range()
1800 	else if (argp->minorversion == 2 && op->opnum > LAST_NFS42_OP)  in nfsd4_opnum_in_range()
1806 nfsd4_decode_compound(struct nfsd4_compoundargs *argp)  in nfsd4_decode_compound()  argument
1811 	int auth_slack= argp->rqstp->rq_auth_slack;  in nfsd4_decode_compound()
1818 	argp->taglen = be32_to_cpup(p++);  in nfsd4_decode_compound()
1819 	READ_BUF(argp->taglen);  in nfsd4_decode_compound()
1820 	SAVEMEM(argp->tag, argp->taglen);  in nfsd4_decode_compound()
1822 	argp->minorversion = be32_to_cpup(p++);  in nfsd4_decode_compound()
1823 	argp->opcnt = be32_to_cpup(p++);  in nfsd4_decode_compound()
1824 	max_reply += 4 + (XDR_QUADLEN(argp->taglen) << 2);  in nfsd4_decode_compound()
1826 	if (argp->taglen > NFSD4_MAX_TAGLEN)  in nfsd4_decode_compound()
1828 	if (argp->opcnt > 100)  in nfsd4_decode_compound()
1831 	if (argp->opcnt > ARRAY_SIZE(argp->iops)) {  in nfsd4_decode_compound()
1832 		argp->ops = kzalloc(argp->opcnt * sizeof(*argp->ops), GFP_KERNEL);  in nfsd4_decode_compound()
1833 		if (!argp->ops) {  in nfsd4_decode_compound()
1834 			argp->ops = argp->iops;  in nfsd4_decode_compound()
1840 	if (argp->minorversion > NFSD_SUPPORTED_MINOR_VERSION)  in nfsd4_decode_compound()
1841 		argp->opcnt = 0;  in nfsd4_decode_compound()
1843 	for (i = 0; i < argp->opcnt; i++) {  in nfsd4_decode_compound()
1844 		op = &argp->ops[i];  in nfsd4_decode_compound()
1850 		if (nfsd4_opnum_in_range(argp, op))  in nfsd4_decode_compound()
1851 			op->status = nfsd4_dec_ops[op->opnum](argp, &op->u);  in nfsd4_decode_compound()
1864 			readbytes += nfsd4_max_reply(argp->rqstp, op);  in nfsd4_decode_compound()
1866 			max_reply += nfsd4_max_reply(argp->rqstp, op);  in nfsd4_decode_compound()
1877 			argp->opcnt = i+1;  in nfsd4_decode_compound()
1882 	if (argp->minorversion)  in nfsd4_decode_compound()
1884 	svc_reserve(argp->rqstp, max_reply + readbytes);  in nfsd4_decode_compound()
1885 	argp->rqstp->rq_cachetype = cachethis ? RC_REPLBUFF : RC_NOCACHE;  in nfsd4_decode_compound()
1888 		clear_bit(RQ_SPLICE_OK, &argp->rqstp->rq_flags);  in nfsd4_decode_compound()