11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * Server-side XDR for NFSv4 31da177e4SLinus Torvalds * 41da177e4SLinus Torvalds * Copyright (c) 2002 The Regents of the University of Michigan. 51da177e4SLinus Torvalds * All rights reserved. 61da177e4SLinus Torvalds * 71da177e4SLinus Torvalds * Kendrick Smith <kmsmith@umich.edu> 81da177e4SLinus Torvalds * Andy Adamson <andros@umich.edu> 91da177e4SLinus Torvalds * 101da177e4SLinus Torvalds * Redistribution and use in source and binary forms, with or without 111da177e4SLinus Torvalds * modification, are permitted provided that the following conditions 121da177e4SLinus Torvalds * are met: 131da177e4SLinus Torvalds * 141da177e4SLinus Torvalds * 1. Redistributions of source code must retain the above copyright 151da177e4SLinus Torvalds * notice, this list of conditions and the following disclaimer. 161da177e4SLinus Torvalds * 2. Redistributions in binary form must reproduce the above copyright 171da177e4SLinus Torvalds * notice, this list of conditions and the following disclaimer in the 181da177e4SLinus Torvalds * documentation and/or other materials provided with the distribution. 191da177e4SLinus Torvalds * 3. Neither the name of the University nor the names of its 201da177e4SLinus Torvalds * contributors may be used to endorse or promote products derived 211da177e4SLinus Torvalds * from this software without specific prior written permission. 221da177e4SLinus Torvalds * 231da177e4SLinus Torvalds * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED 241da177e4SLinus Torvalds * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 251da177e4SLinus Torvalds * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 261da177e4SLinus Torvalds * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 271da177e4SLinus Torvalds * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 281da177e4SLinus Torvalds * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 291da177e4SLinus Torvalds * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 301da177e4SLinus Torvalds * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 311da177e4SLinus Torvalds * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 321da177e4SLinus Torvalds * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 331da177e4SLinus Torvalds * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 341da177e4SLinus Torvalds * 351da177e4SLinus Torvalds * TODO: Neil Brown made the following observation: We currently 361da177e4SLinus Torvalds * initially reserve NFSD_BUFSIZE space on the transmit queue and 371da177e4SLinus Torvalds * never release any of that until the request is complete. 381da177e4SLinus Torvalds * It would be good to calculate a new maximum response size while 391da177e4SLinus Torvalds * decoding the COMPOUND, and call svc_reserve with this number 401da177e4SLinus Torvalds * at the end of nfs4svc_decode_compoundargs. 411da177e4SLinus Torvalds */ 421da177e4SLinus Torvalds 435a0e3ad6STejun Heo #include <linux/slab.h> 441da177e4SLinus Torvalds #include <linux/namei.h> 45341eb184SBoaz Harrosh #include <linux/statfs.h> 460733d213SAndy Adamson #include <linux/utsname.h> 4717456804SBryan Schumaker #include <linux/pagemap.h> 484796f457SJ. Bruce Fields #include <linux/sunrpc/svcauth_gss.h> 499a74af21SBoaz Harrosh 502ca72e17SJ. Bruce Fields #include "idmap.h" 512ca72e17SJ. Bruce Fields #include "acl.h" 529a74af21SBoaz Harrosh #include "xdr4.h" 530a3adadeSJ. Bruce Fields #include "vfs.h" 5417456804SBryan Schumaker #include "state.h" 551091006cSJ. Bruce Fields #include "cache.h" 563d733711SStanislav Kinsbursky #include "netns.h" 572ca72e17SJ. Bruce Fields 5818032ca0SDavid Quigley #ifdef CONFIG_NFSD_V4_SECURITY_LABEL 5918032ca0SDavid Quigley #include <linux/security.h> 6018032ca0SDavid Quigley #endif 6118032ca0SDavid Quigley 6218032ca0SDavid Quigley 631da177e4SLinus Torvalds #define NFSDDBG_FACILITY NFSDDBG_XDR 641da177e4SLinus Torvalds 6542ca0993SJ.Bruce Fields /* 6642ca0993SJ.Bruce Fields * As per referral draft, the fsid for a referral MUST be different from the fsid of the containing 6742ca0993SJ.Bruce Fields * directory in order to indicate to the client that a filesystem boundary is present 6842ca0993SJ.Bruce Fields * We use a fixed fsid for a referral 6942ca0993SJ.Bruce Fields */ 7042ca0993SJ.Bruce Fields #define NFS4_REFERRAL_FSID_MAJOR 0x8000000ULL 7142ca0993SJ.Bruce Fields #define NFS4_REFERRAL_FSID_MINOR 0x8000000ULL 7242ca0993SJ.Bruce Fields 73b37ad28bSAl Viro static __be32 74a36b1725SJ. Bruce Fields check_filename(char *str, int len) 751da177e4SLinus Torvalds { 761da177e4SLinus Torvalds int i; 771da177e4SLinus Torvalds 781da177e4SLinus Torvalds if (len == 0) 791da177e4SLinus Torvalds return nfserr_inval; 801da177e4SLinus Torvalds if (isdotent(str, len)) 81a36b1725SJ. Bruce Fields return nfserr_badname; 821da177e4SLinus Torvalds for (i = 0; i < len; i++) 831da177e4SLinus Torvalds if (str[i] == '/') 84a36b1725SJ. Bruce Fields return nfserr_badname; 851da177e4SLinus Torvalds return 0; 861da177e4SLinus Torvalds } 871da177e4SLinus Torvalds 881da177e4SLinus Torvalds #define DECODE_HEAD \ 892ebbc012SAl Viro __be32 *p; \ 90b37ad28bSAl Viro __be32 status 911da177e4SLinus Torvalds #define DECODE_TAIL \ 921da177e4SLinus Torvalds status = 0; \ 931da177e4SLinus Torvalds out: \ 941da177e4SLinus Torvalds return status; \ 951da177e4SLinus Torvalds xdr_error: \ 96817cb9d4SChuck Lever dprintk("NFSD: xdr error (%s:%d)\n", \ 97817cb9d4SChuck Lever __FILE__, __LINE__); \ 981da177e4SLinus Torvalds status = nfserr_bad_xdr; \ 991da177e4SLinus Torvalds goto out 1001da177e4SLinus Torvalds 1011da177e4SLinus Torvalds #define READ32(x) (x) = ntohl(*p++) 1021da177e4SLinus Torvalds #define READ64(x) do { \ 1031da177e4SLinus Torvalds (x) = (u64)ntohl(*p++) << 32; \ 1041da177e4SLinus Torvalds (x) |= ntohl(*p++); \ 1051da177e4SLinus Torvalds } while (0) 1061da177e4SLinus Torvalds #define READTIME(x) do { \ 1071da177e4SLinus Torvalds p++; \ 1081da177e4SLinus Torvalds (x) = ntohl(*p++); \ 1091da177e4SLinus Torvalds p++; \ 1101da177e4SLinus Torvalds } while (0) 1111da177e4SLinus Torvalds #define READMEM(x,nbytes) do { \ 1121da177e4SLinus Torvalds x = (char *)p; \ 1131da177e4SLinus Torvalds p += XDR_QUADLEN(nbytes); \ 1141da177e4SLinus Torvalds } while (0) 1151da177e4SLinus Torvalds #define SAVEMEM(x,nbytes) do { \ 1161da177e4SLinus Torvalds if (!(x = (p==argp->tmp || p == argp->tmpp) ? \ 1171da177e4SLinus Torvalds savemem(argp, p, nbytes) : \ 1181da177e4SLinus Torvalds (char *)p)) { \ 119817cb9d4SChuck Lever dprintk("NFSD: xdr error (%s:%d)\n", \ 120817cb9d4SChuck Lever __FILE__, __LINE__); \ 1211da177e4SLinus Torvalds goto xdr_error; \ 1221da177e4SLinus Torvalds } \ 1231da177e4SLinus Torvalds p += XDR_QUADLEN(nbytes); \ 1241da177e4SLinus Torvalds } while (0) 1251da177e4SLinus Torvalds #define COPYMEM(x,nbytes) do { \ 1261da177e4SLinus Torvalds memcpy((x), p, nbytes); \ 1271da177e4SLinus Torvalds p += XDR_QUADLEN(nbytes); \ 1281da177e4SLinus Torvalds } while (0) 1291da177e4SLinus Torvalds 1301da177e4SLinus Torvalds /* READ_BUF, read_buf(): nbytes must be <= PAGE_SIZE */ 1311da177e4SLinus Torvalds #define READ_BUF(nbytes) do { \ 1321da177e4SLinus Torvalds if (nbytes <= (u32)((char *)argp->end - (char *)argp->p)) { \ 1331da177e4SLinus Torvalds p = argp->p; \ 1341da177e4SLinus Torvalds argp->p += XDR_QUADLEN(nbytes); \ 1351da177e4SLinus Torvalds } else if (!(p = read_buf(argp, nbytes))) { \ 136817cb9d4SChuck Lever dprintk("NFSD: xdr error (%s:%d)\n", \ 137817cb9d4SChuck Lever __FILE__, __LINE__); \ 1381da177e4SLinus Torvalds goto xdr_error; \ 1391da177e4SLinus Torvalds } \ 1401da177e4SLinus Torvalds } while (0) 1411da177e4SLinus Torvalds 142ca2a05aaSJ. Bruce Fields static __be32 *read_buf(struct nfsd4_compoundargs *argp, u32 nbytes) 1431da177e4SLinus Torvalds { 1441da177e4SLinus Torvalds /* We want more bytes than seem to be available. 1451da177e4SLinus Torvalds * Maybe we need a new page, maybe we have just run out 1461da177e4SLinus Torvalds */ 147ca2a05aaSJ. Bruce Fields unsigned int avail = (char *)argp->end - (char *)argp->p; 1482ebbc012SAl Viro __be32 *p; 1491da177e4SLinus Torvalds if (avail + argp->pagelen < nbytes) 1501da177e4SLinus Torvalds return NULL; 1511da177e4SLinus Torvalds if (avail + PAGE_SIZE < nbytes) /* need more than a page !! */ 1521da177e4SLinus Torvalds return NULL; 1531da177e4SLinus Torvalds /* ok, we can do it with the current plus the next page */ 1541da177e4SLinus Torvalds if (nbytes <= sizeof(argp->tmp)) 1551da177e4SLinus Torvalds p = argp->tmp; 1561da177e4SLinus Torvalds else { 1571da177e4SLinus Torvalds kfree(argp->tmpp); 1581da177e4SLinus Torvalds p = argp->tmpp = kmalloc(nbytes, GFP_KERNEL); 1591da177e4SLinus Torvalds if (!p) 1601da177e4SLinus Torvalds return NULL; 1611da177e4SLinus Torvalds 1621da177e4SLinus Torvalds } 163ca2a05aaSJ. Bruce Fields /* 164ca2a05aaSJ. Bruce Fields * The following memcpy is safe because read_buf is always 165ca2a05aaSJ. Bruce Fields * called with nbytes > avail, and the two cases above both 166ca2a05aaSJ. Bruce Fields * guarantee p points to at least nbytes bytes. 167ca2a05aaSJ. Bruce Fields */ 1681da177e4SLinus Torvalds memcpy(p, argp->p, avail); 1691da177e4SLinus Torvalds /* step to next page */ 1701da177e4SLinus Torvalds argp->p = page_address(argp->pagelist[0]); 1711da177e4SLinus Torvalds argp->pagelist++; 1721da177e4SLinus Torvalds if (argp->pagelen < PAGE_SIZE) { 1732bc3c117SNeil Brown argp->end = argp->p + (argp->pagelen>>2); 1741da177e4SLinus Torvalds argp->pagelen = 0; 1751da177e4SLinus Torvalds } else { 1762bc3c117SNeil Brown argp->end = argp->p + (PAGE_SIZE>>2); 1771da177e4SLinus Torvalds argp->pagelen -= PAGE_SIZE; 1781da177e4SLinus Torvalds } 1791da177e4SLinus Torvalds memcpy(((char*)p)+avail, argp->p, (nbytes - avail)); 1801da177e4SLinus Torvalds argp->p += XDR_QUADLEN(nbytes - avail); 1811da177e4SLinus Torvalds return p; 1821da177e4SLinus Torvalds } 1831da177e4SLinus Torvalds 18460adfc50SAndy Adamson static int zero_clientid(clientid_t *clid) 18560adfc50SAndy Adamson { 18660adfc50SAndy Adamson return (clid->cl_boot == 0) && (clid->cl_id == 0); 18760adfc50SAndy Adamson } 18860adfc50SAndy Adamson 1891da177e4SLinus Torvalds static int 1901da177e4SLinus Torvalds defer_free(struct nfsd4_compoundargs *argp, 1911da177e4SLinus Torvalds void (*release)(const void *), void *p) 1921da177e4SLinus Torvalds { 1931da177e4SLinus Torvalds struct tmpbuf *tb; 1941da177e4SLinus Torvalds 1951da177e4SLinus Torvalds tb = kmalloc(sizeof(*tb), GFP_KERNEL); 1961da177e4SLinus Torvalds if (!tb) 1971da177e4SLinus Torvalds return -ENOMEM; 1981da177e4SLinus Torvalds tb->buf = p; 1991da177e4SLinus Torvalds tb->release = release; 2001da177e4SLinus Torvalds tb->next = argp->to_free; 2011da177e4SLinus Torvalds argp->to_free = tb; 2021da177e4SLinus Torvalds return 0; 2031da177e4SLinus Torvalds } 2041da177e4SLinus Torvalds 2052ebbc012SAl Viro static char *savemem(struct nfsd4_compoundargs *argp, __be32 *p, int nbytes) 2061da177e4SLinus Torvalds { 2071da177e4SLinus Torvalds if (p == argp->tmp) { 20867114fe6SThomas Meyer p = kmemdup(argp->tmp, nbytes, GFP_KERNEL); 209a4db5fe5SJ. Bruce Fields if (!p) 210a4db5fe5SJ. Bruce Fields return NULL; 2111da177e4SLinus Torvalds } else { 21273dff8beSEric Sesterhenn BUG_ON(p != argp->tmpp); 2131da177e4SLinus Torvalds argp->tmpp = NULL; 2141da177e4SLinus Torvalds } 2151da177e4SLinus Torvalds if (defer_free(argp, kfree, p)) { 216a4db5fe5SJ. Bruce Fields kfree(p); 2171da177e4SLinus Torvalds return NULL; 2181da177e4SLinus Torvalds } else 2191da177e4SLinus Torvalds return (char *)p; 2201da177e4SLinus Torvalds } 2211da177e4SLinus Torvalds 222b37ad28bSAl Viro static __be32 2231da177e4SLinus Torvalds nfsd4_decode_bitmap(struct nfsd4_compoundargs *argp, u32 *bmval) 2241da177e4SLinus Torvalds { 2251da177e4SLinus Torvalds u32 bmlen; 2261da177e4SLinus Torvalds DECODE_HEAD; 2271da177e4SLinus Torvalds 2281da177e4SLinus Torvalds bmval[0] = 0; 2291da177e4SLinus Torvalds bmval[1] = 0; 2307e705706SAndy Adamson bmval[2] = 0; 2311da177e4SLinus Torvalds 2321da177e4SLinus Torvalds READ_BUF(4); 2331da177e4SLinus Torvalds READ32(bmlen); 2341da177e4SLinus Torvalds if (bmlen > 1000) 2351da177e4SLinus Torvalds goto xdr_error; 2361da177e4SLinus Torvalds 2371da177e4SLinus Torvalds READ_BUF(bmlen << 2); 2381da177e4SLinus Torvalds if (bmlen > 0) 2391da177e4SLinus Torvalds READ32(bmval[0]); 2401da177e4SLinus Torvalds if (bmlen > 1) 2411da177e4SLinus Torvalds READ32(bmval[1]); 2427e705706SAndy Adamson if (bmlen > 2) 2437e705706SAndy Adamson READ32(bmval[2]); 2441da177e4SLinus Torvalds 2451da177e4SLinus Torvalds DECODE_TAIL; 2461da177e4SLinus Torvalds } 2471da177e4SLinus Torvalds 248b37ad28bSAl Viro static __be32 2493c8e0316SYu Zhiguo nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, 25018032ca0SDavid Quigley struct iattr *iattr, struct nfs4_acl **acl, 25118032ca0SDavid Quigley struct xdr_netobj *label) 2521da177e4SLinus Torvalds { 2531da177e4SLinus Torvalds int expected_len, len = 0; 2541da177e4SLinus Torvalds u32 dummy32; 2551da177e4SLinus Torvalds char *buf; 256b8dd7b9aSAl Viro int host_err; 2571da177e4SLinus Torvalds 2581da177e4SLinus Torvalds DECODE_HEAD; 2591da177e4SLinus Torvalds iattr->ia_valid = 0; 2601da177e4SLinus Torvalds if ((status = nfsd4_decode_bitmap(argp, bmval))) 2611da177e4SLinus Torvalds return status; 2621da177e4SLinus Torvalds 2631da177e4SLinus Torvalds READ_BUF(4); 2641da177e4SLinus Torvalds READ32(expected_len); 2651da177e4SLinus Torvalds 2661da177e4SLinus Torvalds if (bmval[0] & FATTR4_WORD0_SIZE) { 2671da177e4SLinus Torvalds READ_BUF(8); 2681da177e4SLinus Torvalds len += 8; 2691da177e4SLinus Torvalds READ64(iattr->ia_size); 2701da177e4SLinus Torvalds iattr->ia_valid |= ATTR_SIZE; 2711da177e4SLinus Torvalds } 2721da177e4SLinus Torvalds if (bmval[0] & FATTR4_WORD0_ACL) { 27364a817cfSJ. Bruce Fields u32 nace; 27428e05dd8SJ. Bruce Fields struct nfs4_ace *ace; 2751da177e4SLinus Torvalds 2761da177e4SLinus Torvalds READ_BUF(4); len += 4; 2771da177e4SLinus Torvalds READ32(nace); 2781da177e4SLinus Torvalds 27928e05dd8SJ. Bruce Fields if (nace > NFS4_ACL_MAX) 28028e05dd8SJ. Bruce Fields return nfserr_resource; 28128e05dd8SJ. Bruce Fields 28228e05dd8SJ. Bruce Fields *acl = nfs4_acl_new(nace); 2831da177e4SLinus Torvalds if (*acl == NULL) { 284b8dd7b9aSAl Viro host_err = -ENOMEM; 2851da177e4SLinus Torvalds goto out_nfserr; 2861da177e4SLinus Torvalds } 28728e05dd8SJ. Bruce Fields defer_free(argp, kfree, *acl); 2881da177e4SLinus Torvalds 28928e05dd8SJ. Bruce Fields (*acl)->naces = nace; 29028e05dd8SJ. Bruce Fields for (ace = (*acl)->aces; ace < (*acl)->aces + nace; ace++) { 2911da177e4SLinus Torvalds READ_BUF(16); len += 16; 29228e05dd8SJ. Bruce Fields READ32(ace->type); 29328e05dd8SJ. Bruce Fields READ32(ace->flag); 29428e05dd8SJ. Bruce Fields READ32(ace->access_mask); 2951da177e4SLinus Torvalds READ32(dummy32); 2961da177e4SLinus Torvalds READ_BUF(dummy32); 2971da177e4SLinus Torvalds len += XDR_QUADLEN(dummy32) << 2; 2981da177e4SLinus Torvalds READMEM(buf, dummy32); 29928e05dd8SJ. Bruce Fields ace->whotype = nfs4_acl_get_whotype(buf, dummy32); 3003c726023SJ. Bruce Fields status = nfs_ok; 30128e05dd8SJ. Bruce Fields if (ace->whotype != NFS4_ACL_WHO_NAMED) 302ab8e4aeeSEric W. Biederman ; 30328e05dd8SJ. Bruce Fields else if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP) 3043c726023SJ. Bruce Fields status = nfsd_map_name_to_gid(argp->rqstp, 305ab8e4aeeSEric W. Biederman buf, dummy32, &ace->who_gid); 3061da177e4SLinus Torvalds else 3073c726023SJ. Bruce Fields status = nfsd_map_name_to_uid(argp->rqstp, 308ab8e4aeeSEric W. Biederman buf, dummy32, &ace->who_uid); 3093c726023SJ. Bruce Fields if (status) 3103c726023SJ. Bruce Fields return status; 3111da177e4SLinus Torvalds } 3121da177e4SLinus Torvalds } else 3131da177e4SLinus Torvalds *acl = NULL; 3141da177e4SLinus Torvalds if (bmval[1] & FATTR4_WORD1_MODE) { 3151da177e4SLinus Torvalds READ_BUF(4); 3161da177e4SLinus Torvalds len += 4; 3171da177e4SLinus Torvalds READ32(iattr->ia_mode); 3181da177e4SLinus Torvalds iattr->ia_mode &= (S_IFMT | S_IALLUGO); 3191da177e4SLinus Torvalds iattr->ia_valid |= ATTR_MODE; 3201da177e4SLinus Torvalds } 3211da177e4SLinus Torvalds if (bmval[1] & FATTR4_WORD1_OWNER) { 3221da177e4SLinus Torvalds READ_BUF(4); 3231da177e4SLinus Torvalds len += 4; 3241da177e4SLinus Torvalds READ32(dummy32); 3251da177e4SLinus Torvalds READ_BUF(dummy32); 3261da177e4SLinus Torvalds len += (XDR_QUADLEN(dummy32) << 2); 3271da177e4SLinus Torvalds READMEM(buf, dummy32); 32847c85291SNeilBrown if ((status = nfsd_map_name_to_uid(argp->rqstp, buf, dummy32, &iattr->ia_uid))) 32947c85291SNeilBrown return status; 3301da177e4SLinus Torvalds iattr->ia_valid |= ATTR_UID; 3311da177e4SLinus Torvalds } 3321da177e4SLinus Torvalds if (bmval[1] & FATTR4_WORD1_OWNER_GROUP) { 3331da177e4SLinus Torvalds READ_BUF(4); 3341da177e4SLinus Torvalds len += 4; 3351da177e4SLinus Torvalds READ32(dummy32); 3361da177e4SLinus Torvalds READ_BUF(dummy32); 3371da177e4SLinus Torvalds len += (XDR_QUADLEN(dummy32) << 2); 3381da177e4SLinus Torvalds READMEM(buf, dummy32); 33947c85291SNeilBrown if ((status = nfsd_map_name_to_gid(argp->rqstp, buf, dummy32, &iattr->ia_gid))) 34047c85291SNeilBrown return status; 3411da177e4SLinus Torvalds iattr->ia_valid |= ATTR_GID; 3421da177e4SLinus Torvalds } 3431da177e4SLinus Torvalds if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) { 3441da177e4SLinus Torvalds READ_BUF(4); 3451da177e4SLinus Torvalds len += 4; 3461da177e4SLinus Torvalds READ32(dummy32); 3471da177e4SLinus Torvalds switch (dummy32) { 3481da177e4SLinus Torvalds case NFS4_SET_TO_CLIENT_TIME: 3491da177e4SLinus Torvalds /* We require the high 32 bits of 'seconds' to be 0, and we ignore 3501da177e4SLinus Torvalds all 32 bits of 'nseconds'. */ 3511da177e4SLinus Torvalds READ_BUF(12); 3521da177e4SLinus Torvalds len += 12; 353bf8d9097SBryan Schumaker READ64(iattr->ia_atime.tv_sec); 3541da177e4SLinus Torvalds READ32(iattr->ia_atime.tv_nsec); 3551da177e4SLinus Torvalds if (iattr->ia_atime.tv_nsec >= (u32)1000000000) 3561da177e4SLinus Torvalds return nfserr_inval; 3571da177e4SLinus Torvalds iattr->ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET); 3581da177e4SLinus Torvalds break; 3591da177e4SLinus Torvalds case NFS4_SET_TO_SERVER_TIME: 3601da177e4SLinus Torvalds iattr->ia_valid |= ATTR_ATIME; 3611da177e4SLinus Torvalds break; 3621da177e4SLinus Torvalds default: 3631da177e4SLinus Torvalds goto xdr_error; 3641da177e4SLinus Torvalds } 3651da177e4SLinus Torvalds } 3661da177e4SLinus Torvalds if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) { 3671da177e4SLinus Torvalds READ_BUF(4); 3681da177e4SLinus Torvalds len += 4; 3691da177e4SLinus Torvalds READ32(dummy32); 3701da177e4SLinus Torvalds switch (dummy32) { 3711da177e4SLinus Torvalds case NFS4_SET_TO_CLIENT_TIME: 3721da177e4SLinus Torvalds /* We require the high 32 bits of 'seconds' to be 0, and we ignore 3731da177e4SLinus Torvalds all 32 bits of 'nseconds'. */ 3741da177e4SLinus Torvalds READ_BUF(12); 3751da177e4SLinus Torvalds len += 12; 376bf8d9097SBryan Schumaker READ64(iattr->ia_mtime.tv_sec); 3771da177e4SLinus Torvalds READ32(iattr->ia_mtime.tv_nsec); 3781da177e4SLinus Torvalds if (iattr->ia_mtime.tv_nsec >= (u32)1000000000) 3791da177e4SLinus Torvalds return nfserr_inval; 3801da177e4SLinus Torvalds iattr->ia_valid |= (ATTR_MTIME | ATTR_MTIME_SET); 3811da177e4SLinus Torvalds break; 3821da177e4SLinus Torvalds case NFS4_SET_TO_SERVER_TIME: 3831da177e4SLinus Torvalds iattr->ia_valid |= ATTR_MTIME; 3841da177e4SLinus Torvalds break; 3851da177e4SLinus Torvalds default: 3861da177e4SLinus Torvalds goto xdr_error; 3871da177e4SLinus Torvalds } 3881da177e4SLinus Torvalds } 38918032ca0SDavid Quigley 39018032ca0SDavid Quigley label->len = 0; 39118032ca0SDavid Quigley #ifdef CONFIG_NFSD_V4_SECURITY_LABEL 39218032ca0SDavid Quigley if (bmval[2] & FATTR4_WORD2_SECURITY_LABEL) { 39318032ca0SDavid Quigley READ_BUF(4); 39418032ca0SDavid Quigley len += 4; 39518032ca0SDavid Quigley READ32(dummy32); /* lfs: we don't use it */ 39618032ca0SDavid Quigley READ_BUF(4); 39718032ca0SDavid Quigley len += 4; 39818032ca0SDavid Quigley READ32(dummy32); /* pi: we don't use it either */ 39918032ca0SDavid Quigley READ_BUF(4); 40018032ca0SDavid Quigley len += 4; 40118032ca0SDavid Quigley READ32(dummy32); 40218032ca0SDavid Quigley READ_BUF(dummy32); 40318032ca0SDavid Quigley if (dummy32 > NFSD4_MAX_SEC_LABEL_LEN) 40418032ca0SDavid Quigley return nfserr_badlabel; 40518032ca0SDavid Quigley len += (XDR_QUADLEN(dummy32) << 2); 40618032ca0SDavid Quigley READMEM(buf, dummy32); 40718032ca0SDavid Quigley label->data = kzalloc(dummy32 + 1, GFP_KERNEL); 40818032ca0SDavid Quigley if (!label->data) 40918032ca0SDavid Quigley return nfserr_jukebox; 41018032ca0SDavid Quigley defer_free(argp, kfree, label->data); 41118032ca0SDavid Quigley memcpy(label->data, buf, dummy32); 41218032ca0SDavid Quigley } 41318032ca0SDavid Quigley #endif 41418032ca0SDavid Quigley 4153c8e0316SYu Zhiguo if (bmval[0] & ~NFSD_WRITEABLE_ATTRS_WORD0 4163c8e0316SYu Zhiguo || bmval[1] & ~NFSD_WRITEABLE_ATTRS_WORD1 4173c8e0316SYu Zhiguo || bmval[2] & ~NFSD_WRITEABLE_ATTRS_WORD2) 4183c8e0316SYu Zhiguo READ_BUF(expected_len - len); 4193c8e0316SYu Zhiguo else if (len != expected_len) 4201da177e4SLinus Torvalds goto xdr_error; 4211da177e4SLinus Torvalds 4221da177e4SLinus Torvalds DECODE_TAIL; 4231da177e4SLinus Torvalds 4241da177e4SLinus Torvalds out_nfserr: 425b8dd7b9aSAl Viro status = nfserrno(host_err); 4261da177e4SLinus Torvalds goto out; 4271da177e4SLinus Torvalds } 4281da177e4SLinus Torvalds 429b37ad28bSAl Viro static __be32 430e31a1b66SBenny Halevy nfsd4_decode_stateid(struct nfsd4_compoundargs *argp, stateid_t *sid) 431e31a1b66SBenny Halevy { 432e31a1b66SBenny Halevy DECODE_HEAD; 433e31a1b66SBenny Halevy 434e31a1b66SBenny Halevy READ_BUF(sizeof(stateid_t)); 435e31a1b66SBenny Halevy READ32(sid->si_generation); 436e31a1b66SBenny Halevy COPYMEM(&sid->si_opaque, sizeof(stateid_opaque_t)); 437e31a1b66SBenny Halevy 438e31a1b66SBenny Halevy DECODE_TAIL; 439e31a1b66SBenny Halevy } 440e31a1b66SBenny Halevy 441e31a1b66SBenny Halevy static __be32 4421da177e4SLinus Torvalds nfsd4_decode_access(struct nfsd4_compoundargs *argp, struct nfsd4_access *access) 4431da177e4SLinus Torvalds { 4441da177e4SLinus Torvalds DECODE_HEAD; 4451da177e4SLinus Torvalds 4461da177e4SLinus Torvalds READ_BUF(4); 4471da177e4SLinus Torvalds READ32(access->ac_req_access); 4481da177e4SLinus Torvalds 4491da177e4SLinus Torvalds DECODE_TAIL; 4501da177e4SLinus Torvalds } 4511da177e4SLinus Torvalds 452acb2887eSJ. Bruce Fields static __be32 nfsd4_decode_cb_sec(struct nfsd4_compoundargs *argp, struct nfsd4_cb_sec *cbs) 453acb2887eSJ. Bruce Fields { 454acb2887eSJ. Bruce Fields DECODE_HEAD; 45512fc3e92SJ. Bruce Fields u32 dummy, uid, gid; 456acb2887eSJ. Bruce Fields char *machine_name; 457acb2887eSJ. Bruce Fields int i; 458acb2887eSJ. Bruce Fields int nr_secflavs; 459acb2887eSJ. Bruce Fields 460acb2887eSJ. Bruce Fields /* callback_sec_params4 */ 461acb2887eSJ. Bruce Fields READ_BUF(4); 462acb2887eSJ. Bruce Fields READ32(nr_secflavs); 46312fc3e92SJ. Bruce Fields cbs->flavor = (u32)(-1); 464acb2887eSJ. Bruce Fields for (i = 0; i < nr_secflavs; ++i) { 465acb2887eSJ. Bruce Fields READ_BUF(4); 466acb2887eSJ. Bruce Fields READ32(dummy); 467acb2887eSJ. Bruce Fields switch (dummy) { 468acb2887eSJ. Bruce Fields case RPC_AUTH_NULL: 469acb2887eSJ. Bruce Fields /* Nothing to read */ 47012fc3e92SJ. Bruce Fields if (cbs->flavor == (u32)(-1)) 47112fc3e92SJ. Bruce Fields cbs->flavor = RPC_AUTH_NULL; 472acb2887eSJ. Bruce Fields break; 473acb2887eSJ. Bruce Fields case RPC_AUTH_UNIX: 474acb2887eSJ. Bruce Fields READ_BUF(8); 475acb2887eSJ. Bruce Fields /* stamp */ 476acb2887eSJ. Bruce Fields READ32(dummy); 477acb2887eSJ. Bruce Fields 478acb2887eSJ. Bruce Fields /* machine name */ 479acb2887eSJ. Bruce Fields READ32(dummy); 480acb2887eSJ. Bruce Fields READ_BUF(dummy); 481acb2887eSJ. Bruce Fields SAVEMEM(machine_name, dummy); 482acb2887eSJ. Bruce Fields 483acb2887eSJ. Bruce Fields /* uid, gid */ 484acb2887eSJ. Bruce Fields READ_BUF(8); 48512fc3e92SJ. Bruce Fields READ32(uid); 48612fc3e92SJ. Bruce Fields READ32(gid); 487acb2887eSJ. Bruce Fields 488acb2887eSJ. Bruce Fields /* more gids */ 489acb2887eSJ. Bruce Fields READ_BUF(4); 490acb2887eSJ. Bruce Fields READ32(dummy); 491acb2887eSJ. Bruce Fields READ_BUF(dummy * 4); 49212fc3e92SJ. Bruce Fields if (cbs->flavor == (u32)(-1)) { 49303bc6d1cSEric W. Biederman kuid_t kuid = make_kuid(&init_user_ns, uid); 49403bc6d1cSEric W. Biederman kgid_t kgid = make_kgid(&init_user_ns, gid); 49503bc6d1cSEric W. Biederman if (uid_valid(kuid) && gid_valid(kgid)) { 49603bc6d1cSEric W. Biederman cbs->uid = kuid; 49703bc6d1cSEric W. Biederman cbs->gid = kgid; 49812fc3e92SJ. Bruce Fields cbs->flavor = RPC_AUTH_UNIX; 49903bc6d1cSEric W. Biederman } else { 50003bc6d1cSEric W. Biederman dprintk("RPC_AUTH_UNIX with invalid" 50103bc6d1cSEric W. Biederman "uid or gid ignoring!\n"); 50203bc6d1cSEric W. Biederman } 50312fc3e92SJ. Bruce Fields } 504acb2887eSJ. Bruce Fields break; 505acb2887eSJ. Bruce Fields case RPC_AUTH_GSS: 506acb2887eSJ. Bruce Fields dprintk("RPC_AUTH_GSS callback secflavor " 507acb2887eSJ. Bruce Fields "not supported!\n"); 508acb2887eSJ. Bruce Fields READ_BUF(8); 509acb2887eSJ. Bruce Fields /* gcbp_service */ 510acb2887eSJ. Bruce Fields READ32(dummy); 511acb2887eSJ. Bruce Fields /* gcbp_handle_from_server */ 512acb2887eSJ. Bruce Fields READ32(dummy); 513acb2887eSJ. Bruce Fields READ_BUF(dummy); 514acb2887eSJ. Bruce Fields p += XDR_QUADLEN(dummy); 515acb2887eSJ. Bruce Fields /* gcbp_handle_from_client */ 516acb2887eSJ. Bruce Fields READ_BUF(4); 517acb2887eSJ. Bruce Fields READ32(dummy); 518acb2887eSJ. Bruce Fields READ_BUF(dummy); 519acb2887eSJ. Bruce Fields break; 520acb2887eSJ. Bruce Fields default: 521acb2887eSJ. Bruce Fields dprintk("Illegal callback secflavor\n"); 522acb2887eSJ. Bruce Fields return nfserr_inval; 523acb2887eSJ. Bruce Fields } 524acb2887eSJ. Bruce Fields } 525acb2887eSJ. Bruce Fields DECODE_TAIL; 526acb2887eSJ. Bruce Fields } 527acb2887eSJ. Bruce Fields 528cb73a9f4SJ. Bruce Fields static __be32 nfsd4_decode_backchannel_ctl(struct nfsd4_compoundargs *argp, struct nfsd4_backchannel_ctl *bc) 529cb73a9f4SJ. Bruce Fields { 530cb73a9f4SJ. Bruce Fields DECODE_HEAD; 531cb73a9f4SJ. Bruce Fields 532cb73a9f4SJ. Bruce Fields READ_BUF(4); 533cb73a9f4SJ. Bruce Fields READ32(bc->bc_cb_program); 534cb73a9f4SJ. Bruce Fields nfsd4_decode_cb_sec(argp, &bc->bc_cb_sec); 535cb73a9f4SJ. Bruce Fields 536cb73a9f4SJ. Bruce Fields DECODE_TAIL; 537cb73a9f4SJ. Bruce Fields } 538cb73a9f4SJ. Bruce Fields 5391d1bc8f2SJ. Bruce Fields static __be32 nfsd4_decode_bind_conn_to_session(struct nfsd4_compoundargs *argp, struct nfsd4_bind_conn_to_session *bcts) 5401d1bc8f2SJ. Bruce Fields { 5411d1bc8f2SJ. Bruce Fields DECODE_HEAD; 5421d1bc8f2SJ. Bruce Fields 5431d1bc8f2SJ. Bruce Fields READ_BUF(NFS4_MAX_SESSIONID_LEN + 8); 5441d1bc8f2SJ. Bruce Fields COPYMEM(bcts->sessionid.data, NFS4_MAX_SESSIONID_LEN); 5451d1bc8f2SJ. Bruce Fields READ32(bcts->dir); 5466ce2357fSBryan Schumaker /* XXX: skipping ctsa_use_conn_in_rdma_mode. Perhaps Tom Tucker 5476ce2357fSBryan Schumaker * could help us figure out we should be using it. */ 5481d1bc8f2SJ. Bruce Fields DECODE_TAIL; 5491d1bc8f2SJ. Bruce Fields } 5501d1bc8f2SJ. Bruce Fields 551b37ad28bSAl Viro static __be32 5521da177e4SLinus Torvalds nfsd4_decode_close(struct nfsd4_compoundargs *argp, struct nfsd4_close *close) 5531da177e4SLinus Torvalds { 5541da177e4SLinus Torvalds DECODE_HEAD; 5551da177e4SLinus Torvalds 556e31a1b66SBenny Halevy READ_BUF(4); 5571da177e4SLinus Torvalds READ32(close->cl_seqid); 558e31a1b66SBenny Halevy return nfsd4_decode_stateid(argp, &close->cl_stateid); 5591da177e4SLinus Torvalds 5601da177e4SLinus Torvalds DECODE_TAIL; 5611da177e4SLinus Torvalds } 5621da177e4SLinus Torvalds 5631da177e4SLinus Torvalds 564b37ad28bSAl Viro static __be32 5651da177e4SLinus Torvalds nfsd4_decode_commit(struct nfsd4_compoundargs *argp, struct nfsd4_commit *commit) 5661da177e4SLinus Torvalds { 5671da177e4SLinus Torvalds DECODE_HEAD; 5681da177e4SLinus Torvalds 5691da177e4SLinus Torvalds READ_BUF(12); 5701da177e4SLinus Torvalds READ64(commit->co_offset); 5711da177e4SLinus Torvalds READ32(commit->co_count); 5721da177e4SLinus Torvalds 5731da177e4SLinus Torvalds DECODE_TAIL; 5741da177e4SLinus Torvalds } 5751da177e4SLinus Torvalds 576b37ad28bSAl Viro static __be32 5771da177e4SLinus Torvalds nfsd4_decode_create(struct nfsd4_compoundargs *argp, struct nfsd4_create *create) 5781da177e4SLinus Torvalds { 5791da177e4SLinus Torvalds DECODE_HEAD; 5801da177e4SLinus Torvalds 5811da177e4SLinus Torvalds READ_BUF(4); 5821da177e4SLinus Torvalds READ32(create->cr_type); 5831da177e4SLinus Torvalds switch (create->cr_type) { 5841da177e4SLinus Torvalds case NF4LNK: 5851da177e4SLinus Torvalds READ_BUF(4); 5861da177e4SLinus Torvalds READ32(create->cr_linklen); 5871da177e4SLinus Torvalds READ_BUF(create->cr_linklen); 5881da177e4SLinus Torvalds SAVEMEM(create->cr_linkname, create->cr_linklen); 5891da177e4SLinus Torvalds break; 5901da177e4SLinus Torvalds case NF4BLK: 5911da177e4SLinus Torvalds case NF4CHR: 5921da177e4SLinus Torvalds READ_BUF(8); 5931da177e4SLinus Torvalds READ32(create->cr_specdata1); 5941da177e4SLinus Torvalds READ32(create->cr_specdata2); 5951da177e4SLinus Torvalds break; 5961da177e4SLinus Torvalds case NF4SOCK: 5971da177e4SLinus Torvalds case NF4FIFO: 5981da177e4SLinus Torvalds case NF4DIR: 5991da177e4SLinus Torvalds default: 6001da177e4SLinus Torvalds break; 6011da177e4SLinus Torvalds } 6021da177e4SLinus Torvalds 6031da177e4SLinus Torvalds READ_BUF(4); 6041da177e4SLinus Torvalds READ32(create->cr_namelen); 6051da177e4SLinus Torvalds READ_BUF(create->cr_namelen); 6061da177e4SLinus Torvalds SAVEMEM(create->cr_name, create->cr_namelen); 607a36b1725SJ. Bruce Fields if ((status = check_filename(create->cr_name, create->cr_namelen))) 6081da177e4SLinus Torvalds return status; 6091da177e4SLinus Torvalds 6103c8e0316SYu Zhiguo status = nfsd4_decode_fattr(argp, create->cr_bmval, &create->cr_iattr, 61118032ca0SDavid Quigley &create->cr_acl, &create->cr_label); 612c0d6fc8aSBenny Halevy if (status) 6131da177e4SLinus Torvalds goto out; 6141da177e4SLinus Torvalds 6151da177e4SLinus Torvalds DECODE_TAIL; 6161da177e4SLinus Torvalds } 6171da177e4SLinus Torvalds 618b37ad28bSAl Viro static inline __be32 6191da177e4SLinus Torvalds nfsd4_decode_delegreturn(struct nfsd4_compoundargs *argp, struct nfsd4_delegreturn *dr) 6201da177e4SLinus Torvalds { 621e31a1b66SBenny Halevy return nfsd4_decode_stateid(argp, &dr->dr_stateid); 6221da177e4SLinus Torvalds } 6231da177e4SLinus Torvalds 624b37ad28bSAl Viro static inline __be32 6251da177e4SLinus Torvalds nfsd4_decode_getattr(struct nfsd4_compoundargs *argp, struct nfsd4_getattr *getattr) 6261da177e4SLinus Torvalds { 6271da177e4SLinus Torvalds return nfsd4_decode_bitmap(argp, getattr->ga_bmval); 6281da177e4SLinus Torvalds } 6291da177e4SLinus Torvalds 630b37ad28bSAl Viro static __be32 6311da177e4SLinus Torvalds nfsd4_decode_link(struct nfsd4_compoundargs *argp, struct nfsd4_link *link) 6321da177e4SLinus Torvalds { 6331da177e4SLinus Torvalds DECODE_HEAD; 6341da177e4SLinus Torvalds 6351da177e4SLinus Torvalds READ_BUF(4); 6361da177e4SLinus Torvalds READ32(link->li_namelen); 6371da177e4SLinus Torvalds READ_BUF(link->li_namelen); 6381da177e4SLinus Torvalds SAVEMEM(link->li_name, link->li_namelen); 639a36b1725SJ. Bruce Fields if ((status = check_filename(link->li_name, link->li_namelen))) 6401da177e4SLinus Torvalds return status; 6411da177e4SLinus Torvalds 6421da177e4SLinus Torvalds DECODE_TAIL; 6431da177e4SLinus Torvalds } 6441da177e4SLinus Torvalds 645b37ad28bSAl Viro static __be32 6461da177e4SLinus Torvalds nfsd4_decode_lock(struct nfsd4_compoundargs *argp, struct nfsd4_lock *lock) 6471da177e4SLinus Torvalds { 6481da177e4SLinus Torvalds DECODE_HEAD; 6491da177e4SLinus Torvalds 6501da177e4SLinus Torvalds /* 6511da177e4SLinus Torvalds * type, reclaim(boolean), offset, length, new_lock_owner(boolean) 6521da177e4SLinus Torvalds */ 6531da177e4SLinus Torvalds READ_BUF(28); 6541da177e4SLinus Torvalds READ32(lock->lk_type); 6551da177e4SLinus Torvalds if ((lock->lk_type < NFS4_READ_LT) || (lock->lk_type > NFS4_WRITEW_LT)) 6561da177e4SLinus Torvalds goto xdr_error; 6571da177e4SLinus Torvalds READ32(lock->lk_reclaim); 6581da177e4SLinus Torvalds READ64(lock->lk_offset); 6591da177e4SLinus Torvalds READ64(lock->lk_length); 6601da177e4SLinus Torvalds READ32(lock->lk_is_new); 6611da177e4SLinus Torvalds 6621da177e4SLinus Torvalds if (lock->lk_is_new) { 663e31a1b66SBenny Halevy READ_BUF(4); 6641da177e4SLinus Torvalds READ32(lock->lk_new_open_seqid); 665e31a1b66SBenny Halevy status = nfsd4_decode_stateid(argp, &lock->lk_new_open_stateid); 666e31a1b66SBenny Halevy if (status) 667e31a1b66SBenny Halevy return status; 668e31a1b66SBenny Halevy READ_BUF(8 + sizeof(clientid_t)); 6691da177e4SLinus Torvalds READ32(lock->lk_new_lock_seqid); 6701da177e4SLinus Torvalds COPYMEM(&lock->lk_new_clientid, sizeof(clientid_t)); 6711da177e4SLinus Torvalds READ32(lock->lk_new_owner.len); 6721da177e4SLinus Torvalds READ_BUF(lock->lk_new_owner.len); 6731da177e4SLinus Torvalds READMEM(lock->lk_new_owner.data, lock->lk_new_owner.len); 6741da177e4SLinus Torvalds } else { 675e31a1b66SBenny Halevy status = nfsd4_decode_stateid(argp, &lock->lk_old_lock_stateid); 676e31a1b66SBenny Halevy if (status) 677e31a1b66SBenny Halevy return status; 678e31a1b66SBenny Halevy READ_BUF(4); 6791da177e4SLinus Torvalds READ32(lock->lk_old_lock_seqid); 6801da177e4SLinus Torvalds } 6811da177e4SLinus Torvalds 6821da177e4SLinus Torvalds DECODE_TAIL; 6831da177e4SLinus Torvalds } 6841da177e4SLinus Torvalds 685b37ad28bSAl Viro static __be32 6861da177e4SLinus Torvalds nfsd4_decode_lockt(struct nfsd4_compoundargs *argp, struct nfsd4_lockt *lockt) 6871da177e4SLinus Torvalds { 6881da177e4SLinus Torvalds DECODE_HEAD; 6891da177e4SLinus Torvalds 6901da177e4SLinus Torvalds READ_BUF(32); 6911da177e4SLinus Torvalds READ32(lockt->lt_type); 6921da177e4SLinus Torvalds if((lockt->lt_type < NFS4_READ_LT) || (lockt->lt_type > NFS4_WRITEW_LT)) 6931da177e4SLinus Torvalds goto xdr_error; 6941da177e4SLinus Torvalds READ64(lockt->lt_offset); 6951da177e4SLinus Torvalds READ64(lockt->lt_length); 6961da177e4SLinus Torvalds COPYMEM(&lockt->lt_clientid, 8); 6971da177e4SLinus Torvalds READ32(lockt->lt_owner.len); 6981da177e4SLinus Torvalds READ_BUF(lockt->lt_owner.len); 6991da177e4SLinus Torvalds READMEM(lockt->lt_owner.data, lockt->lt_owner.len); 7001da177e4SLinus Torvalds 7011da177e4SLinus Torvalds DECODE_TAIL; 7021da177e4SLinus Torvalds } 7031da177e4SLinus Torvalds 704b37ad28bSAl Viro static __be32 7051da177e4SLinus Torvalds nfsd4_decode_locku(struct nfsd4_compoundargs *argp, struct nfsd4_locku *locku) 7061da177e4SLinus Torvalds { 7071da177e4SLinus Torvalds DECODE_HEAD; 7081da177e4SLinus Torvalds 709e31a1b66SBenny Halevy READ_BUF(8); 7101da177e4SLinus Torvalds READ32(locku->lu_type); 7111da177e4SLinus Torvalds if ((locku->lu_type < NFS4_READ_LT) || (locku->lu_type > NFS4_WRITEW_LT)) 7121da177e4SLinus Torvalds goto xdr_error; 7131da177e4SLinus Torvalds READ32(locku->lu_seqid); 714e31a1b66SBenny Halevy status = nfsd4_decode_stateid(argp, &locku->lu_stateid); 715e31a1b66SBenny Halevy if (status) 716e31a1b66SBenny Halevy return status; 717e31a1b66SBenny Halevy READ_BUF(16); 7181da177e4SLinus Torvalds READ64(locku->lu_offset); 7191da177e4SLinus Torvalds READ64(locku->lu_length); 7201da177e4SLinus Torvalds 7211da177e4SLinus Torvalds DECODE_TAIL; 7221da177e4SLinus Torvalds } 7231da177e4SLinus Torvalds 724b37ad28bSAl Viro static __be32 7251da177e4SLinus Torvalds nfsd4_decode_lookup(struct nfsd4_compoundargs *argp, struct nfsd4_lookup *lookup) 7261da177e4SLinus Torvalds { 7271da177e4SLinus Torvalds DECODE_HEAD; 7281da177e4SLinus Torvalds 7291da177e4SLinus Torvalds READ_BUF(4); 7301da177e4SLinus Torvalds READ32(lookup->lo_len); 7311da177e4SLinus Torvalds READ_BUF(lookup->lo_len); 7321da177e4SLinus Torvalds SAVEMEM(lookup->lo_name, lookup->lo_len); 733a36b1725SJ. Bruce Fields if ((status = check_filename(lookup->lo_name, lookup->lo_len))) 7341da177e4SLinus Torvalds return status; 7351da177e4SLinus Torvalds 7361da177e4SLinus Torvalds DECODE_TAIL; 7371da177e4SLinus Torvalds } 7381da177e4SLinus Torvalds 7392c8bd7e0SBenny Halevy static __be32 nfsd4_decode_share_access(struct nfsd4_compoundargs *argp, u32 *share_access, u32 *deleg_want, u32 *deleg_when) 74004f9e664SJ. Bruce Fields { 74104f9e664SJ. Bruce Fields __be32 *p; 74204f9e664SJ. Bruce Fields u32 w; 74304f9e664SJ. Bruce Fields 74404f9e664SJ. Bruce Fields READ_BUF(4); 74504f9e664SJ. Bruce Fields READ32(w); 7462c8bd7e0SBenny Halevy *share_access = w & NFS4_SHARE_ACCESS_MASK; 7472c8bd7e0SBenny Halevy *deleg_want = w & NFS4_SHARE_WANT_MASK; 7482c8bd7e0SBenny Halevy if (deleg_when) 7492c8bd7e0SBenny Halevy *deleg_when = w & NFS4_SHARE_WHEN_MASK; 7502c8bd7e0SBenny Halevy 75104f9e664SJ. Bruce Fields switch (w & NFS4_SHARE_ACCESS_MASK) { 75204f9e664SJ. Bruce Fields case NFS4_SHARE_ACCESS_READ: 75304f9e664SJ. Bruce Fields case NFS4_SHARE_ACCESS_WRITE: 75404f9e664SJ. Bruce Fields case NFS4_SHARE_ACCESS_BOTH: 75504f9e664SJ. Bruce Fields break; 75604f9e664SJ. Bruce Fields default: 75704f9e664SJ. Bruce Fields return nfserr_bad_xdr; 75804f9e664SJ. Bruce Fields } 759fc0d14feSBenny Halevy w &= ~NFS4_SHARE_ACCESS_MASK; 76004f9e664SJ. Bruce Fields if (!w) 76104f9e664SJ. Bruce Fields return nfs_ok; 76204f9e664SJ. Bruce Fields if (!argp->minorversion) 76304f9e664SJ. Bruce Fields return nfserr_bad_xdr; 76404f9e664SJ. Bruce Fields switch (w & NFS4_SHARE_WANT_MASK) { 76504f9e664SJ. Bruce Fields case NFS4_SHARE_WANT_NO_PREFERENCE: 76604f9e664SJ. Bruce Fields case NFS4_SHARE_WANT_READ_DELEG: 76704f9e664SJ. Bruce Fields case NFS4_SHARE_WANT_WRITE_DELEG: 76804f9e664SJ. Bruce Fields case NFS4_SHARE_WANT_ANY_DELEG: 76904f9e664SJ. Bruce Fields case NFS4_SHARE_WANT_NO_DELEG: 77004f9e664SJ. Bruce Fields case NFS4_SHARE_WANT_CANCEL: 77104f9e664SJ. Bruce Fields break; 77204f9e664SJ. Bruce Fields default: 77304f9e664SJ. Bruce Fields return nfserr_bad_xdr; 77404f9e664SJ. Bruce Fields } 77592bac8c5SBenny Halevy w &= ~NFS4_SHARE_WANT_MASK; 77604f9e664SJ. Bruce Fields if (!w) 77704f9e664SJ. Bruce Fields return nfs_ok; 7782c8bd7e0SBenny Halevy 7792c8bd7e0SBenny Halevy if (!deleg_when) /* open_downgrade */ 7802c8bd7e0SBenny Halevy return nfserr_inval; 78104f9e664SJ. Bruce Fields switch (w) { 78204f9e664SJ. Bruce Fields case NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL: 78304f9e664SJ. Bruce Fields case NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED: 784c668fc6dSBenny Halevy case (NFS4_SHARE_SIGNAL_DELEG_WHEN_RESRC_AVAIL | 785c668fc6dSBenny Halevy NFS4_SHARE_PUSH_DELEG_WHEN_UNCONTENDED): 78604f9e664SJ. Bruce Fields return nfs_ok; 78704f9e664SJ. Bruce Fields } 78804f9e664SJ. Bruce Fields xdr_error: 78904f9e664SJ. Bruce Fields return nfserr_bad_xdr; 79004f9e664SJ. Bruce Fields } 79104f9e664SJ. Bruce Fields 79204f9e664SJ. Bruce Fields static __be32 nfsd4_decode_share_deny(struct nfsd4_compoundargs *argp, u32 *x) 79304f9e664SJ. Bruce Fields { 79404f9e664SJ. Bruce Fields __be32 *p; 79504f9e664SJ. Bruce Fields 79604f9e664SJ. Bruce Fields READ_BUF(4); 79704f9e664SJ. Bruce Fields READ32(*x); 79804f9e664SJ. Bruce Fields /* Note: unlinke access bits, deny bits may be zero. */ 79901cd4afaSDan Carpenter if (*x & ~NFS4_SHARE_DENY_BOTH) 80004f9e664SJ. Bruce Fields return nfserr_bad_xdr; 80104f9e664SJ. Bruce Fields return nfs_ok; 80204f9e664SJ. Bruce Fields xdr_error: 80304f9e664SJ. Bruce Fields return nfserr_bad_xdr; 80404f9e664SJ. Bruce Fields } 80504f9e664SJ. Bruce Fields 806a084daf5SJ. Bruce Fields static __be32 nfsd4_decode_opaque(struct nfsd4_compoundargs *argp, struct xdr_netobj *o) 807a084daf5SJ. Bruce Fields { 808a084daf5SJ. Bruce Fields __be32 *p; 809a084daf5SJ. Bruce Fields 810a084daf5SJ. Bruce Fields READ_BUF(4); 811a084daf5SJ. Bruce Fields READ32(o->len); 812a084daf5SJ. Bruce Fields 813a084daf5SJ. Bruce Fields if (o->len == 0 || o->len > NFS4_OPAQUE_LIMIT) 814a084daf5SJ. Bruce Fields return nfserr_bad_xdr; 815a084daf5SJ. Bruce Fields 816a084daf5SJ. Bruce Fields READ_BUF(o->len); 817a084daf5SJ. Bruce Fields SAVEMEM(o->data, o->len); 818a084daf5SJ. Bruce Fields return nfs_ok; 819a084daf5SJ. Bruce Fields xdr_error: 820a084daf5SJ. Bruce Fields return nfserr_bad_xdr; 821a084daf5SJ. Bruce Fields } 822a084daf5SJ. Bruce Fields 823b37ad28bSAl Viro static __be32 8241da177e4SLinus Torvalds nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open) 8251da177e4SLinus Torvalds { 8261da177e4SLinus Torvalds DECODE_HEAD; 8272c8bd7e0SBenny Halevy u32 dummy; 8281da177e4SLinus Torvalds 8291da177e4SLinus Torvalds memset(open->op_bmval, 0, sizeof(open->op_bmval)); 8301da177e4SLinus Torvalds open->op_iattr.ia_valid = 0; 831fe0750e5SJ. Bruce Fields open->op_openowner = NULL; 8321da177e4SLinus Torvalds 8339d313b17SJ. Bruce Fields open->op_xdr_error = 0; 8341da177e4SLinus Torvalds /* seqid, share_access, share_deny, clientid, ownerlen */ 83504f9e664SJ. Bruce Fields READ_BUF(4); 8361da177e4SLinus Torvalds READ32(open->op_seqid); 8372c8bd7e0SBenny Halevy /* decode, yet ignore deleg_when until supported */ 8382c8bd7e0SBenny Halevy status = nfsd4_decode_share_access(argp, &open->op_share_access, 8392c8bd7e0SBenny Halevy &open->op_deleg_want, &dummy); 84004f9e664SJ. Bruce Fields if (status) 84104f9e664SJ. Bruce Fields goto xdr_error; 84204f9e664SJ. Bruce Fields status = nfsd4_decode_share_deny(argp, &open->op_share_deny); 84304f9e664SJ. Bruce Fields if (status) 84404f9e664SJ. Bruce Fields goto xdr_error; 845a084daf5SJ. Bruce Fields READ_BUF(sizeof(clientid_t)); 8461da177e4SLinus Torvalds COPYMEM(&open->op_clientid, sizeof(clientid_t)); 847a084daf5SJ. Bruce Fields status = nfsd4_decode_opaque(argp, &open->op_owner); 848a084daf5SJ. Bruce Fields if (status) 849a084daf5SJ. Bruce Fields goto xdr_error; 850a084daf5SJ. Bruce Fields READ_BUF(4); 8511da177e4SLinus Torvalds READ32(open->op_create); 8521da177e4SLinus Torvalds switch (open->op_create) { 8531da177e4SLinus Torvalds case NFS4_OPEN_NOCREATE: 8541da177e4SLinus Torvalds break; 8551da177e4SLinus Torvalds case NFS4_OPEN_CREATE: 8561da177e4SLinus Torvalds READ_BUF(4); 8571da177e4SLinus Torvalds READ32(open->op_createmode); 8581da177e4SLinus Torvalds switch (open->op_createmode) { 8591da177e4SLinus Torvalds case NFS4_CREATE_UNCHECKED: 8601da177e4SLinus Torvalds case NFS4_CREATE_GUARDED: 861c0d6fc8aSBenny Halevy status = nfsd4_decode_fattr(argp, open->op_bmval, 86218032ca0SDavid Quigley &open->op_iattr, &open->op_acl, &open->op_label); 863c0d6fc8aSBenny Halevy if (status) 8641da177e4SLinus Torvalds goto out; 8651da177e4SLinus Torvalds break; 8661da177e4SLinus Torvalds case NFS4_CREATE_EXCLUSIVE: 867ab4684d1SChuck Lever READ_BUF(NFS4_VERIFIER_SIZE); 868ab4684d1SChuck Lever COPYMEM(open->op_verf.data, NFS4_VERIFIER_SIZE); 8691da177e4SLinus Torvalds break; 87079fb54abSBenny Halevy case NFS4_CREATE_EXCLUSIVE4_1: 87179fb54abSBenny Halevy if (argp->minorversion < 1) 87279fb54abSBenny Halevy goto xdr_error; 873ab4684d1SChuck Lever READ_BUF(NFS4_VERIFIER_SIZE); 874ab4684d1SChuck Lever COPYMEM(open->op_verf.data, NFS4_VERIFIER_SIZE); 87579fb54abSBenny Halevy status = nfsd4_decode_fattr(argp, open->op_bmval, 87618032ca0SDavid Quigley &open->op_iattr, &open->op_acl, &open->op_label); 87779fb54abSBenny Halevy if (status) 87879fb54abSBenny Halevy goto out; 87979fb54abSBenny Halevy break; 8801da177e4SLinus Torvalds default: 8811da177e4SLinus Torvalds goto xdr_error; 8821da177e4SLinus Torvalds } 8831da177e4SLinus Torvalds break; 8841da177e4SLinus Torvalds default: 8851da177e4SLinus Torvalds goto xdr_error; 8861da177e4SLinus Torvalds } 8871da177e4SLinus Torvalds 8881da177e4SLinus Torvalds /* open_claim */ 8891da177e4SLinus Torvalds READ_BUF(4); 8901da177e4SLinus Torvalds READ32(open->op_claim_type); 8911da177e4SLinus Torvalds switch (open->op_claim_type) { 8921da177e4SLinus Torvalds case NFS4_OPEN_CLAIM_NULL: 8931da177e4SLinus Torvalds case NFS4_OPEN_CLAIM_DELEGATE_PREV: 8941da177e4SLinus Torvalds READ_BUF(4); 8951da177e4SLinus Torvalds READ32(open->op_fname.len); 8961da177e4SLinus Torvalds READ_BUF(open->op_fname.len); 8971da177e4SLinus Torvalds SAVEMEM(open->op_fname.data, open->op_fname.len); 898a36b1725SJ. Bruce Fields if ((status = check_filename(open->op_fname.data, open->op_fname.len))) 8991da177e4SLinus Torvalds return status; 9001da177e4SLinus Torvalds break; 9011da177e4SLinus Torvalds case NFS4_OPEN_CLAIM_PREVIOUS: 9021da177e4SLinus Torvalds READ_BUF(4); 9031da177e4SLinus Torvalds READ32(open->op_delegate_type); 9041da177e4SLinus Torvalds break; 9051da177e4SLinus Torvalds case NFS4_OPEN_CLAIM_DELEGATE_CUR: 906e31a1b66SBenny Halevy status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid); 907e31a1b66SBenny Halevy if (status) 908e31a1b66SBenny Halevy return status; 909e31a1b66SBenny Halevy READ_BUF(4); 9101da177e4SLinus Torvalds READ32(open->op_fname.len); 9111da177e4SLinus Torvalds READ_BUF(open->op_fname.len); 9121da177e4SLinus Torvalds SAVEMEM(open->op_fname.data, open->op_fname.len); 913a36b1725SJ. Bruce Fields if ((status = check_filename(open->op_fname.data, open->op_fname.len))) 9141da177e4SLinus Torvalds return status; 9151da177e4SLinus Torvalds break; 9168b289b2cSJ. Bruce Fields case NFS4_OPEN_CLAIM_FH: 9178b289b2cSJ. Bruce Fields case NFS4_OPEN_CLAIM_DELEG_PREV_FH: 9188b289b2cSJ. Bruce Fields if (argp->minorversion < 1) 9198b289b2cSJ. Bruce Fields goto xdr_error; 9208b289b2cSJ. Bruce Fields /* void */ 9218b289b2cSJ. Bruce Fields break; 9228b289b2cSJ. Bruce Fields case NFS4_OPEN_CLAIM_DELEG_CUR_FH: 9238b289b2cSJ. Bruce Fields if (argp->minorversion < 1) 9248b289b2cSJ. Bruce Fields goto xdr_error; 9258b289b2cSJ. Bruce Fields status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid); 9268b289b2cSJ. Bruce Fields if (status) 9278b289b2cSJ. Bruce Fields return status; 9288b289b2cSJ. Bruce Fields break; 9291da177e4SLinus Torvalds default: 9301da177e4SLinus Torvalds goto xdr_error; 9311da177e4SLinus Torvalds } 9321da177e4SLinus Torvalds 9331da177e4SLinus Torvalds DECODE_TAIL; 9341da177e4SLinus Torvalds } 9351da177e4SLinus Torvalds 936b37ad28bSAl Viro static __be32 9371da177e4SLinus Torvalds nfsd4_decode_open_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_open_confirm *open_conf) 9381da177e4SLinus Torvalds { 9391da177e4SLinus Torvalds DECODE_HEAD; 9401da177e4SLinus Torvalds 941e31a1b66SBenny Halevy status = nfsd4_decode_stateid(argp, &open_conf->oc_req_stateid); 942e31a1b66SBenny Halevy if (status) 943e31a1b66SBenny Halevy return status; 944e31a1b66SBenny Halevy READ_BUF(4); 9451da177e4SLinus Torvalds READ32(open_conf->oc_seqid); 9461da177e4SLinus Torvalds 9471da177e4SLinus Torvalds DECODE_TAIL; 9481da177e4SLinus Torvalds } 9491da177e4SLinus Torvalds 950b37ad28bSAl Viro static __be32 9511da177e4SLinus Torvalds nfsd4_decode_open_downgrade(struct nfsd4_compoundargs *argp, struct nfsd4_open_downgrade *open_down) 9521da177e4SLinus Torvalds { 9531da177e4SLinus Torvalds DECODE_HEAD; 9541da177e4SLinus Torvalds 955e31a1b66SBenny Halevy status = nfsd4_decode_stateid(argp, &open_down->od_stateid); 956e31a1b66SBenny Halevy if (status) 957e31a1b66SBenny Halevy return status; 95804f9e664SJ. Bruce Fields READ_BUF(4); 9591da177e4SLinus Torvalds READ32(open_down->od_seqid); 9602c8bd7e0SBenny Halevy status = nfsd4_decode_share_access(argp, &open_down->od_share_access, 9612c8bd7e0SBenny Halevy &open_down->od_deleg_want, NULL); 96204f9e664SJ. Bruce Fields if (status) 96304f9e664SJ. Bruce Fields return status; 96404f9e664SJ. Bruce Fields status = nfsd4_decode_share_deny(argp, &open_down->od_share_deny); 96504f9e664SJ. Bruce Fields if (status) 96604f9e664SJ. Bruce Fields return status; 9671da177e4SLinus Torvalds DECODE_TAIL; 9681da177e4SLinus Torvalds } 9691da177e4SLinus Torvalds 970b37ad28bSAl Viro static __be32 9711da177e4SLinus Torvalds nfsd4_decode_putfh(struct nfsd4_compoundargs *argp, struct nfsd4_putfh *putfh) 9721da177e4SLinus Torvalds { 9731da177e4SLinus Torvalds DECODE_HEAD; 9741da177e4SLinus Torvalds 9751da177e4SLinus Torvalds READ_BUF(4); 9761da177e4SLinus Torvalds READ32(putfh->pf_fhlen); 9771da177e4SLinus Torvalds if (putfh->pf_fhlen > NFS4_FHSIZE) 9781da177e4SLinus Torvalds goto xdr_error; 9791da177e4SLinus Torvalds READ_BUF(putfh->pf_fhlen); 9801da177e4SLinus Torvalds SAVEMEM(putfh->pf_fhval, putfh->pf_fhlen); 9811da177e4SLinus Torvalds 9821da177e4SLinus Torvalds DECODE_TAIL; 9831da177e4SLinus Torvalds } 9841da177e4SLinus Torvalds 985b37ad28bSAl Viro static __be32 9861da177e4SLinus Torvalds nfsd4_decode_read(struct nfsd4_compoundargs *argp, struct nfsd4_read *read) 9871da177e4SLinus Torvalds { 9881da177e4SLinus Torvalds DECODE_HEAD; 9891da177e4SLinus Torvalds 990e31a1b66SBenny Halevy status = nfsd4_decode_stateid(argp, &read->rd_stateid); 991e31a1b66SBenny Halevy if (status) 992e31a1b66SBenny Halevy return status; 993e31a1b66SBenny Halevy READ_BUF(12); 9941da177e4SLinus Torvalds READ64(read->rd_offset); 9951da177e4SLinus Torvalds READ32(read->rd_length); 9961da177e4SLinus Torvalds 9971da177e4SLinus Torvalds DECODE_TAIL; 9981da177e4SLinus Torvalds } 9991da177e4SLinus Torvalds 1000b37ad28bSAl Viro static __be32 10011da177e4SLinus Torvalds nfsd4_decode_readdir(struct nfsd4_compoundargs *argp, struct nfsd4_readdir *readdir) 10021da177e4SLinus Torvalds { 10031da177e4SLinus Torvalds DECODE_HEAD; 10041da177e4SLinus Torvalds 10051da177e4SLinus Torvalds READ_BUF(24); 10061da177e4SLinus Torvalds READ64(readdir->rd_cookie); 10071da177e4SLinus Torvalds COPYMEM(readdir->rd_verf.data, sizeof(readdir->rd_verf.data)); 10081da177e4SLinus Torvalds READ32(readdir->rd_dircount); /* just in case you needed a useless field... */ 10091da177e4SLinus Torvalds READ32(readdir->rd_maxcount); 10101da177e4SLinus Torvalds if ((status = nfsd4_decode_bitmap(argp, readdir->rd_bmval))) 10111da177e4SLinus Torvalds goto out; 10121da177e4SLinus Torvalds 10131da177e4SLinus Torvalds DECODE_TAIL; 10141da177e4SLinus Torvalds } 10151da177e4SLinus Torvalds 1016b37ad28bSAl Viro static __be32 10171da177e4SLinus Torvalds nfsd4_decode_remove(struct nfsd4_compoundargs *argp, struct nfsd4_remove *remove) 10181da177e4SLinus Torvalds { 10191da177e4SLinus Torvalds DECODE_HEAD; 10201da177e4SLinus Torvalds 10211da177e4SLinus Torvalds READ_BUF(4); 10221da177e4SLinus Torvalds READ32(remove->rm_namelen); 10231da177e4SLinus Torvalds READ_BUF(remove->rm_namelen); 10241da177e4SLinus Torvalds SAVEMEM(remove->rm_name, remove->rm_namelen); 1025a36b1725SJ. Bruce Fields if ((status = check_filename(remove->rm_name, remove->rm_namelen))) 10261da177e4SLinus Torvalds return status; 10271da177e4SLinus Torvalds 10281da177e4SLinus Torvalds DECODE_TAIL; 10291da177e4SLinus Torvalds } 10301da177e4SLinus Torvalds 1031b37ad28bSAl Viro static __be32 10321da177e4SLinus Torvalds nfsd4_decode_rename(struct nfsd4_compoundargs *argp, struct nfsd4_rename *rename) 10331da177e4SLinus Torvalds { 10341da177e4SLinus Torvalds DECODE_HEAD; 10351da177e4SLinus Torvalds 10361da177e4SLinus Torvalds READ_BUF(4); 10371da177e4SLinus Torvalds READ32(rename->rn_snamelen); 10381da177e4SLinus Torvalds READ_BUF(rename->rn_snamelen + 4); 10391da177e4SLinus Torvalds SAVEMEM(rename->rn_sname, rename->rn_snamelen); 10401da177e4SLinus Torvalds READ32(rename->rn_tnamelen); 10411da177e4SLinus Torvalds READ_BUF(rename->rn_tnamelen); 10421da177e4SLinus Torvalds SAVEMEM(rename->rn_tname, rename->rn_tnamelen); 1043a36b1725SJ. Bruce Fields if ((status = check_filename(rename->rn_sname, rename->rn_snamelen))) 10441da177e4SLinus Torvalds return status; 1045a36b1725SJ. Bruce Fields if ((status = check_filename(rename->rn_tname, rename->rn_tnamelen))) 10461da177e4SLinus Torvalds return status; 10471da177e4SLinus Torvalds 10481da177e4SLinus Torvalds DECODE_TAIL; 10491da177e4SLinus Torvalds } 10501da177e4SLinus Torvalds 1051b37ad28bSAl Viro static __be32 10521da177e4SLinus Torvalds nfsd4_decode_renew(struct nfsd4_compoundargs *argp, clientid_t *clientid) 10531da177e4SLinus Torvalds { 10541da177e4SLinus Torvalds DECODE_HEAD; 10551da177e4SLinus Torvalds 10561da177e4SLinus Torvalds READ_BUF(sizeof(clientid_t)); 10571da177e4SLinus Torvalds COPYMEM(clientid, sizeof(clientid_t)); 10581da177e4SLinus Torvalds 10591da177e4SLinus Torvalds DECODE_TAIL; 10601da177e4SLinus Torvalds } 10611da177e4SLinus Torvalds 1062b37ad28bSAl Viro static __be32 1063dcb488a3SAndy Adamson nfsd4_decode_secinfo(struct nfsd4_compoundargs *argp, 1064dcb488a3SAndy Adamson struct nfsd4_secinfo *secinfo) 1065dcb488a3SAndy Adamson { 1066dcb488a3SAndy Adamson DECODE_HEAD; 1067dcb488a3SAndy Adamson 1068dcb488a3SAndy Adamson READ_BUF(4); 1069dcb488a3SAndy Adamson READ32(secinfo->si_namelen); 1070dcb488a3SAndy Adamson READ_BUF(secinfo->si_namelen); 1071dcb488a3SAndy Adamson SAVEMEM(secinfo->si_name, secinfo->si_namelen); 1072a36b1725SJ. Bruce Fields status = check_filename(secinfo->si_name, secinfo->si_namelen); 1073dcb488a3SAndy Adamson if (status) 1074dcb488a3SAndy Adamson return status; 1075dcb488a3SAndy Adamson DECODE_TAIL; 1076dcb488a3SAndy Adamson } 1077dcb488a3SAndy Adamson 1078dcb488a3SAndy Adamson static __be32 107904f4ad16SJ. Bruce Fields nfsd4_decode_secinfo_no_name(struct nfsd4_compoundargs *argp, 108004f4ad16SJ. Bruce Fields struct nfsd4_secinfo_no_name *sin) 108104f4ad16SJ. Bruce Fields { 108204f4ad16SJ. Bruce Fields DECODE_HEAD; 108304f4ad16SJ. Bruce Fields 108404f4ad16SJ. Bruce Fields READ_BUF(4); 108504f4ad16SJ. Bruce Fields READ32(sin->sin_style); 108604f4ad16SJ. Bruce Fields DECODE_TAIL; 108704f4ad16SJ. Bruce Fields } 108804f4ad16SJ. Bruce Fields 108904f4ad16SJ. Bruce Fields static __be32 10901da177e4SLinus Torvalds nfsd4_decode_setattr(struct nfsd4_compoundargs *argp, struct nfsd4_setattr *setattr) 10911da177e4SLinus Torvalds { 1092e31a1b66SBenny Halevy __be32 status; 10931da177e4SLinus Torvalds 1094e31a1b66SBenny Halevy status = nfsd4_decode_stateid(argp, &setattr->sa_stateid); 1095e31a1b66SBenny Halevy if (status) 1096e31a1b66SBenny Halevy return status; 10973c8e0316SYu Zhiguo return nfsd4_decode_fattr(argp, setattr->sa_bmval, &setattr->sa_iattr, 109818032ca0SDavid Quigley &setattr->sa_acl, &setattr->sa_label); 10991da177e4SLinus Torvalds } 11001da177e4SLinus Torvalds 1101b37ad28bSAl Viro static __be32 11021da177e4SLinus Torvalds nfsd4_decode_setclientid(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid *setclientid) 11031da177e4SLinus Torvalds { 11041da177e4SLinus Torvalds DECODE_HEAD; 11051da177e4SLinus Torvalds 1106ab4684d1SChuck Lever READ_BUF(NFS4_VERIFIER_SIZE); 1107ab4684d1SChuck Lever COPYMEM(setclientid->se_verf.data, NFS4_VERIFIER_SIZE); 11081da177e4SLinus Torvalds 1109a084daf5SJ. Bruce Fields status = nfsd4_decode_opaque(argp, &setclientid->se_name); 1110a084daf5SJ. Bruce Fields if (status) 1111a084daf5SJ. Bruce Fields return nfserr_bad_xdr; 1112a084daf5SJ. Bruce Fields READ_BUF(8); 11131da177e4SLinus Torvalds READ32(setclientid->se_callback_prog); 11141da177e4SLinus Torvalds READ32(setclientid->se_callback_netid_len); 11151da177e4SLinus Torvalds 11161da177e4SLinus Torvalds READ_BUF(setclientid->se_callback_netid_len + 4); 11171da177e4SLinus Torvalds SAVEMEM(setclientid->se_callback_netid_val, setclientid->se_callback_netid_len); 11181da177e4SLinus Torvalds READ32(setclientid->se_callback_addr_len); 11191da177e4SLinus Torvalds 11201da177e4SLinus Torvalds READ_BUF(setclientid->se_callback_addr_len + 4); 11211da177e4SLinus Torvalds SAVEMEM(setclientid->se_callback_addr_val, setclientid->se_callback_addr_len); 11221da177e4SLinus Torvalds READ32(setclientid->se_callback_ident); 11231da177e4SLinus Torvalds 11241da177e4SLinus Torvalds DECODE_TAIL; 11251da177e4SLinus Torvalds } 11261da177e4SLinus Torvalds 1127b37ad28bSAl Viro static __be32 11281da177e4SLinus Torvalds nfsd4_decode_setclientid_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid_confirm *scd_c) 11291da177e4SLinus Torvalds { 11301da177e4SLinus Torvalds DECODE_HEAD; 11311da177e4SLinus Torvalds 1132ab4684d1SChuck Lever READ_BUF(8 + NFS4_VERIFIER_SIZE); 11331da177e4SLinus Torvalds COPYMEM(&scd_c->sc_clientid, 8); 1134ab4684d1SChuck Lever COPYMEM(&scd_c->sc_confirm, NFS4_VERIFIER_SIZE); 11351da177e4SLinus Torvalds 11361da177e4SLinus Torvalds DECODE_TAIL; 11371da177e4SLinus Torvalds } 11381da177e4SLinus Torvalds 11391da177e4SLinus Torvalds /* Also used for NVERIFY */ 1140b37ad28bSAl Viro static __be32 11411da177e4SLinus Torvalds nfsd4_decode_verify(struct nfsd4_compoundargs *argp, struct nfsd4_verify *verify) 11421da177e4SLinus Torvalds { 11431da177e4SLinus Torvalds DECODE_HEAD; 11441da177e4SLinus Torvalds 11451da177e4SLinus Torvalds if ((status = nfsd4_decode_bitmap(argp, verify->ve_bmval))) 11461da177e4SLinus Torvalds goto out; 11471da177e4SLinus Torvalds 11481da177e4SLinus Torvalds /* For convenience's sake, we compare raw xdr'd attributes in 1149e5f95703SJ. Bruce Fields * nfsd4_proc_verify */ 1150e5f95703SJ. Bruce Fields 11511da177e4SLinus Torvalds READ_BUF(4); 11521da177e4SLinus Torvalds READ32(verify->ve_attrlen); 11531da177e4SLinus Torvalds READ_BUF(verify->ve_attrlen); 11541da177e4SLinus Torvalds SAVEMEM(verify->ve_attrval, verify->ve_attrlen); 11551da177e4SLinus Torvalds 11561da177e4SLinus Torvalds DECODE_TAIL; 11571da177e4SLinus Torvalds } 11581da177e4SLinus Torvalds 1159b37ad28bSAl Viro static __be32 11601da177e4SLinus Torvalds nfsd4_decode_write(struct nfsd4_compoundargs *argp, struct nfsd4_write *write) 11611da177e4SLinus Torvalds { 11621da177e4SLinus Torvalds int avail; 11631da177e4SLinus Torvalds int len; 11641da177e4SLinus Torvalds DECODE_HEAD; 11651da177e4SLinus Torvalds 1166e31a1b66SBenny Halevy status = nfsd4_decode_stateid(argp, &write->wr_stateid); 1167e31a1b66SBenny Halevy if (status) 1168e31a1b66SBenny Halevy return status; 1169e31a1b66SBenny Halevy READ_BUF(16); 11701da177e4SLinus Torvalds READ64(write->wr_offset); 11711da177e4SLinus Torvalds READ32(write->wr_stable_how); 11721da177e4SLinus Torvalds if (write->wr_stable_how > 2) 11731da177e4SLinus Torvalds goto xdr_error; 11741da177e4SLinus Torvalds READ32(write->wr_buflen); 11751da177e4SLinus Torvalds 11761da177e4SLinus Torvalds /* Sorry .. no magic macros for this.. * 11771da177e4SLinus Torvalds * READ_BUF(write->wr_buflen); 11781da177e4SLinus Torvalds * SAVEMEM(write->wr_buf, write->wr_buflen); 11791da177e4SLinus Torvalds */ 11801da177e4SLinus Torvalds avail = (char*)argp->end - (char*)argp->p; 11811da177e4SLinus Torvalds if (avail + argp->pagelen < write->wr_buflen) { 1182817cb9d4SChuck Lever dprintk("NFSD: xdr error (%s:%d)\n", 1183817cb9d4SChuck Lever __FILE__, __LINE__); 11841da177e4SLinus Torvalds goto xdr_error; 11851da177e4SLinus Torvalds } 118670cc7f75SJ. Bruce Fields write->wr_head.iov_base = p; 118770cc7f75SJ. Bruce Fields write->wr_head.iov_len = avail; 11885a80a54dSJ. Bruce Fields WARN_ON(avail != (XDR_QUADLEN(avail) << 2)); 118970cc7f75SJ. Bruce Fields write->wr_pagelist = argp->pagelist; 11905a80a54dSJ. Bruce Fields 11915a80a54dSJ. Bruce Fields len = XDR_QUADLEN(write->wr_buflen) << 2; 11925a80a54dSJ. Bruce Fields if (len >= avail) { 11935a80a54dSJ. Bruce Fields int pages; 11945a80a54dSJ. Bruce Fields 11955a80a54dSJ. Bruce Fields len -= avail; 11965a80a54dSJ. Bruce Fields 11975a80a54dSJ. Bruce Fields pages = len >> PAGE_SHIFT; 11985a80a54dSJ. Bruce Fields argp->pagelist += pages; 11995a80a54dSJ. Bruce Fields argp->pagelen -= pages * PAGE_SIZE; 12005a80a54dSJ. Bruce Fields len -= pages * PAGE_SIZE; 12015a80a54dSJ. Bruce Fields 12025a80a54dSJ. Bruce Fields argp->p = (__be32 *)page_address(argp->pagelist[0]); 12035a80a54dSJ. Bruce Fields argp->end = argp->p + XDR_QUADLEN(PAGE_SIZE); 12041da177e4SLinus Torvalds } 12055a80a54dSJ. Bruce Fields argp->p += XDR_QUADLEN(len); 12061da177e4SLinus Torvalds 12071da177e4SLinus Torvalds DECODE_TAIL; 12081da177e4SLinus Torvalds } 12091da177e4SLinus Torvalds 1210b37ad28bSAl Viro static __be32 12111da177e4SLinus Torvalds nfsd4_decode_release_lockowner(struct nfsd4_compoundargs *argp, struct nfsd4_release_lockowner *rlockowner) 12121da177e4SLinus Torvalds { 12131da177e4SLinus Torvalds DECODE_HEAD; 12141da177e4SLinus Torvalds 12151da177e4SLinus Torvalds READ_BUF(12); 12161da177e4SLinus Torvalds COPYMEM(&rlockowner->rl_clientid, sizeof(clientid_t)); 12171da177e4SLinus Torvalds READ32(rlockowner->rl_owner.len); 12181da177e4SLinus Torvalds READ_BUF(rlockowner->rl_owner.len); 12191da177e4SLinus Torvalds READMEM(rlockowner->rl_owner.data, rlockowner->rl_owner.len); 12201da177e4SLinus Torvalds 122160adfc50SAndy Adamson if (argp->minorversion && !zero_clientid(&rlockowner->rl_clientid)) 122260adfc50SAndy Adamson return nfserr_inval; 12231da177e4SLinus Torvalds DECODE_TAIL; 12241da177e4SLinus Torvalds } 12251da177e4SLinus Torvalds 1226b37ad28bSAl Viro static __be32 12272db134ebSAndy Adamson nfsd4_decode_exchange_id(struct nfsd4_compoundargs *argp, 12280733d213SAndy Adamson struct nfsd4_exchange_id *exid) 12292db134ebSAndy Adamson { 12305afa040bSMi Jinlong int dummy, tmp; 12310733d213SAndy Adamson DECODE_HEAD; 12320733d213SAndy Adamson 12330733d213SAndy Adamson READ_BUF(NFS4_VERIFIER_SIZE); 12340733d213SAndy Adamson COPYMEM(exid->verifier.data, NFS4_VERIFIER_SIZE); 12350733d213SAndy Adamson 1236a084daf5SJ. Bruce Fields status = nfsd4_decode_opaque(argp, &exid->clname); 1237a084daf5SJ. Bruce Fields if (status) 1238a084daf5SJ. Bruce Fields return nfserr_bad_xdr; 12390733d213SAndy Adamson 12400733d213SAndy Adamson READ_BUF(4); 12410733d213SAndy Adamson READ32(exid->flags); 12420733d213SAndy Adamson 12430733d213SAndy Adamson /* Ignore state_protect4_a */ 12440733d213SAndy Adamson READ_BUF(4); 12450733d213SAndy Adamson READ32(exid->spa_how); 12460733d213SAndy Adamson switch (exid->spa_how) { 12470733d213SAndy Adamson case SP4_NONE: 12480733d213SAndy Adamson break; 12490733d213SAndy Adamson case SP4_MACH_CRED: 12500733d213SAndy Adamson /* spo_must_enforce */ 12510733d213SAndy Adamson READ_BUF(4); 12520733d213SAndy Adamson READ32(dummy); 12530733d213SAndy Adamson READ_BUF(dummy * 4); 12540733d213SAndy Adamson p += dummy; 12550733d213SAndy Adamson 12560733d213SAndy Adamson /* spo_must_allow */ 12570733d213SAndy Adamson READ_BUF(4); 12580733d213SAndy Adamson READ32(dummy); 12590733d213SAndy Adamson READ_BUF(dummy * 4); 12600733d213SAndy Adamson p += dummy; 12610733d213SAndy Adamson break; 12620733d213SAndy Adamson case SP4_SSV: 12630733d213SAndy Adamson /* ssp_ops */ 12640733d213SAndy Adamson READ_BUF(4); 12650733d213SAndy Adamson READ32(dummy); 12660733d213SAndy Adamson READ_BUF(dummy * 4); 12670733d213SAndy Adamson p += dummy; 12680733d213SAndy Adamson 12690733d213SAndy Adamson READ_BUF(4); 12700733d213SAndy Adamson READ32(dummy); 12710733d213SAndy Adamson READ_BUF(dummy * 4); 12720733d213SAndy Adamson p += dummy; 12730733d213SAndy Adamson 12740733d213SAndy Adamson /* ssp_hash_algs<> */ 12750733d213SAndy Adamson READ_BUF(4); 12765afa040bSMi Jinlong READ32(tmp); 12775afa040bSMi Jinlong while (tmp--) { 12780733d213SAndy Adamson READ_BUF(4); 12790733d213SAndy Adamson READ32(dummy); 12800733d213SAndy Adamson READ_BUF(dummy); 12810733d213SAndy Adamson p += XDR_QUADLEN(dummy); 12825afa040bSMi Jinlong } 12835afa040bSMi Jinlong 12845afa040bSMi Jinlong /* ssp_encr_algs<> */ 12855afa040bSMi Jinlong READ_BUF(4); 12865afa040bSMi Jinlong READ32(tmp); 12875afa040bSMi Jinlong while (tmp--) { 12885afa040bSMi Jinlong READ_BUF(4); 12895afa040bSMi Jinlong READ32(dummy); 12905afa040bSMi Jinlong READ_BUF(dummy); 12915afa040bSMi Jinlong p += XDR_QUADLEN(dummy); 12925afa040bSMi Jinlong } 12930733d213SAndy Adamson 12940733d213SAndy Adamson /* ssp_window and ssp_num_gss_handles */ 12950733d213SAndy Adamson READ_BUF(8); 12960733d213SAndy Adamson READ32(dummy); 12970733d213SAndy Adamson READ32(dummy); 12980733d213SAndy Adamson break; 12990733d213SAndy Adamson default: 13000733d213SAndy Adamson goto xdr_error; 13010733d213SAndy Adamson } 13020733d213SAndy Adamson 13030733d213SAndy Adamson /* Ignore Implementation ID */ 13040733d213SAndy Adamson READ_BUF(4); /* nfs_impl_id4 array length */ 13050733d213SAndy Adamson READ32(dummy); 13060733d213SAndy Adamson 13070733d213SAndy Adamson if (dummy > 1) 13080733d213SAndy Adamson goto xdr_error; 13090733d213SAndy Adamson 13100733d213SAndy Adamson if (dummy == 1) { 13110733d213SAndy Adamson /* nii_domain */ 13120733d213SAndy Adamson READ_BUF(4); 13130733d213SAndy Adamson READ32(dummy); 13140733d213SAndy Adamson READ_BUF(dummy); 13150733d213SAndy Adamson p += XDR_QUADLEN(dummy); 13160733d213SAndy Adamson 13170733d213SAndy Adamson /* nii_name */ 13180733d213SAndy Adamson READ_BUF(4); 13190733d213SAndy Adamson READ32(dummy); 13200733d213SAndy Adamson READ_BUF(dummy); 13210733d213SAndy Adamson p += XDR_QUADLEN(dummy); 13220733d213SAndy Adamson 13230733d213SAndy Adamson /* nii_date */ 13240733d213SAndy Adamson READ_BUF(12); 13250733d213SAndy Adamson p += 3; 13260733d213SAndy Adamson } 13270733d213SAndy Adamson DECODE_TAIL; 13282db134ebSAndy Adamson } 13292db134ebSAndy Adamson 13302db134ebSAndy Adamson static __be32 13312db134ebSAndy Adamson nfsd4_decode_create_session(struct nfsd4_compoundargs *argp, 13322db134ebSAndy Adamson struct nfsd4_create_session *sess) 13332db134ebSAndy Adamson { 1334ec6b5d7bSAndy Adamson DECODE_HEAD; 1335ec6b5d7bSAndy Adamson u32 dummy; 1336ec6b5d7bSAndy Adamson 1337ec6b5d7bSAndy Adamson READ_BUF(16); 1338ec6b5d7bSAndy Adamson COPYMEM(&sess->clientid, 8); 1339ec6b5d7bSAndy Adamson READ32(sess->seqid); 1340ec6b5d7bSAndy Adamson READ32(sess->flags); 1341ec6b5d7bSAndy Adamson 1342ec6b5d7bSAndy Adamson /* Fore channel attrs */ 1343ec6b5d7bSAndy Adamson READ_BUF(28); 1344ec6b5d7bSAndy Adamson READ32(dummy); /* headerpadsz is always 0 */ 1345ec6b5d7bSAndy Adamson READ32(sess->fore_channel.maxreq_sz); 1346ec6b5d7bSAndy Adamson READ32(sess->fore_channel.maxresp_sz); 1347ec6b5d7bSAndy Adamson READ32(sess->fore_channel.maxresp_cached); 1348ec6b5d7bSAndy Adamson READ32(sess->fore_channel.maxops); 1349ec6b5d7bSAndy Adamson READ32(sess->fore_channel.maxreqs); 1350ec6b5d7bSAndy Adamson READ32(sess->fore_channel.nr_rdma_attrs); 1351ec6b5d7bSAndy Adamson if (sess->fore_channel.nr_rdma_attrs == 1) { 1352ec6b5d7bSAndy Adamson READ_BUF(4); 1353ec6b5d7bSAndy Adamson READ32(sess->fore_channel.rdma_attrs); 1354ec6b5d7bSAndy Adamson } else if (sess->fore_channel.nr_rdma_attrs > 1) { 1355ec6b5d7bSAndy Adamson dprintk("Too many fore channel attr bitmaps!\n"); 1356ec6b5d7bSAndy Adamson goto xdr_error; 1357ec6b5d7bSAndy Adamson } 1358ec6b5d7bSAndy Adamson 1359ec6b5d7bSAndy Adamson /* Back channel attrs */ 1360ec6b5d7bSAndy Adamson READ_BUF(28); 1361ec6b5d7bSAndy Adamson READ32(dummy); /* headerpadsz is always 0 */ 1362ec6b5d7bSAndy Adamson READ32(sess->back_channel.maxreq_sz); 1363ec6b5d7bSAndy Adamson READ32(sess->back_channel.maxresp_sz); 1364ec6b5d7bSAndy Adamson READ32(sess->back_channel.maxresp_cached); 1365ec6b5d7bSAndy Adamson READ32(sess->back_channel.maxops); 1366ec6b5d7bSAndy Adamson READ32(sess->back_channel.maxreqs); 1367ec6b5d7bSAndy Adamson READ32(sess->back_channel.nr_rdma_attrs); 1368ec6b5d7bSAndy Adamson if (sess->back_channel.nr_rdma_attrs == 1) { 1369ec6b5d7bSAndy Adamson READ_BUF(4); 1370ec6b5d7bSAndy Adamson READ32(sess->back_channel.rdma_attrs); 1371ec6b5d7bSAndy Adamson } else if (sess->back_channel.nr_rdma_attrs > 1) { 1372ec6b5d7bSAndy Adamson dprintk("Too many back channel attr bitmaps!\n"); 1373ec6b5d7bSAndy Adamson goto xdr_error; 1374ec6b5d7bSAndy Adamson } 1375ec6b5d7bSAndy Adamson 1376acb2887eSJ. Bruce Fields READ_BUF(4); 1377ec6b5d7bSAndy Adamson READ32(sess->callback_prog); 1378acb2887eSJ. Bruce Fields nfsd4_decode_cb_sec(argp, &sess->cb_sec); 1379ec6b5d7bSAndy Adamson DECODE_TAIL; 13802db134ebSAndy Adamson } 13812db134ebSAndy Adamson 13822db134ebSAndy Adamson static __be32 13832db134ebSAndy Adamson nfsd4_decode_destroy_session(struct nfsd4_compoundargs *argp, 13842db134ebSAndy Adamson struct nfsd4_destroy_session *destroy_session) 13852db134ebSAndy Adamson { 1386e10e0cfcSBenny Halevy DECODE_HEAD; 1387e10e0cfcSBenny Halevy READ_BUF(NFS4_MAX_SESSIONID_LEN); 1388e10e0cfcSBenny Halevy COPYMEM(destroy_session->sessionid.data, NFS4_MAX_SESSIONID_LEN); 1389e10e0cfcSBenny Halevy 1390e10e0cfcSBenny Halevy DECODE_TAIL; 13912db134ebSAndy Adamson } 13922db134ebSAndy Adamson 13932db134ebSAndy Adamson static __be32 1394e1ca12dfSBryan Schumaker nfsd4_decode_free_stateid(struct nfsd4_compoundargs *argp, 1395e1ca12dfSBryan Schumaker struct nfsd4_free_stateid *free_stateid) 1396e1ca12dfSBryan Schumaker { 1397e1ca12dfSBryan Schumaker DECODE_HEAD; 1398e1ca12dfSBryan Schumaker 1399e1ca12dfSBryan Schumaker READ_BUF(sizeof(stateid_t)); 1400e1ca12dfSBryan Schumaker READ32(free_stateid->fr_stateid.si_generation); 1401e1ca12dfSBryan Schumaker COPYMEM(&free_stateid->fr_stateid.si_opaque, sizeof(stateid_opaque_t)); 1402e1ca12dfSBryan Schumaker 1403e1ca12dfSBryan Schumaker DECODE_TAIL; 1404e1ca12dfSBryan Schumaker } 1405e1ca12dfSBryan Schumaker 1406e1ca12dfSBryan Schumaker static __be32 14072db134ebSAndy Adamson nfsd4_decode_sequence(struct nfsd4_compoundargs *argp, 14082db134ebSAndy Adamson struct nfsd4_sequence *seq) 14092db134ebSAndy Adamson { 1410b85d4c01SBenny Halevy DECODE_HEAD; 1411b85d4c01SBenny Halevy 1412b85d4c01SBenny Halevy READ_BUF(NFS4_MAX_SESSIONID_LEN + 16); 1413b85d4c01SBenny Halevy COPYMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN); 1414b85d4c01SBenny Halevy READ32(seq->seqid); 1415b85d4c01SBenny Halevy READ32(seq->slotid); 1416b85d4c01SBenny Halevy READ32(seq->maxslots); 1417b85d4c01SBenny Halevy READ32(seq->cachethis); 1418b85d4c01SBenny Halevy 1419b85d4c01SBenny Halevy DECODE_TAIL; 14202db134ebSAndy Adamson } 14212db134ebSAndy Adamson 142217456804SBryan Schumaker static __be32 142317456804SBryan Schumaker nfsd4_decode_test_stateid(struct nfsd4_compoundargs *argp, struct nfsd4_test_stateid *test_stateid) 142417456804SBryan Schumaker { 142517456804SBryan Schumaker int i; 142603cfb420SBryan Schumaker __be32 *p, status; 142703cfb420SBryan Schumaker struct nfsd4_test_stateid_id *stateid; 142817456804SBryan Schumaker 142917456804SBryan Schumaker READ_BUF(4); 143017456804SBryan Schumaker test_stateid->ts_num_ids = ntohl(*p++); 143117456804SBryan Schumaker 143203cfb420SBryan Schumaker INIT_LIST_HEAD(&test_stateid->ts_stateid_list); 143317456804SBryan Schumaker 143417456804SBryan Schumaker for (i = 0; i < test_stateid->ts_num_ids; i++) { 143503cfb420SBryan Schumaker stateid = kmalloc(sizeof(struct nfsd4_test_stateid_id), GFP_KERNEL); 143603cfb420SBryan Schumaker if (!stateid) { 1437afcf6792SAl Viro status = nfserrno(-ENOMEM); 143803cfb420SBryan Schumaker goto out; 143903cfb420SBryan Schumaker } 144003cfb420SBryan Schumaker 144103cfb420SBryan Schumaker defer_free(argp, kfree, stateid); 144203cfb420SBryan Schumaker INIT_LIST_HEAD(&stateid->ts_id_list); 144303cfb420SBryan Schumaker list_add_tail(&stateid->ts_id_list, &test_stateid->ts_stateid_list); 144403cfb420SBryan Schumaker 144503cfb420SBryan Schumaker status = nfsd4_decode_stateid(argp, &stateid->ts_id_stateid); 144617456804SBryan Schumaker if (status) 144703cfb420SBryan Schumaker goto out; 144817456804SBryan Schumaker } 144917456804SBryan Schumaker 145017456804SBryan Schumaker status = 0; 145117456804SBryan Schumaker out: 145217456804SBryan Schumaker return status; 145317456804SBryan Schumaker xdr_error: 145417456804SBryan Schumaker dprintk("NFSD: xdr error (%s:%d)\n", __FILE__, __LINE__); 145517456804SBryan Schumaker status = nfserr_bad_xdr; 145617456804SBryan Schumaker goto out; 145717456804SBryan Schumaker } 145817456804SBryan Schumaker 1459345c2842SMi Jinlong static __be32 nfsd4_decode_destroy_clientid(struct nfsd4_compoundargs *argp, struct nfsd4_destroy_clientid *dc) 1460345c2842SMi Jinlong { 1461345c2842SMi Jinlong DECODE_HEAD; 1462345c2842SMi Jinlong 1463345c2842SMi Jinlong READ_BUF(8); 1464345c2842SMi Jinlong COPYMEM(&dc->clientid, 8); 1465345c2842SMi Jinlong 1466345c2842SMi Jinlong DECODE_TAIL; 1467345c2842SMi Jinlong } 1468345c2842SMi Jinlong 14694dc6ec00SJ. Bruce Fields static __be32 nfsd4_decode_reclaim_complete(struct nfsd4_compoundargs *argp, struct nfsd4_reclaim_complete *rc) 14704dc6ec00SJ. Bruce Fields { 14714dc6ec00SJ. Bruce Fields DECODE_HEAD; 14724dc6ec00SJ. Bruce Fields 14734dc6ec00SJ. Bruce Fields READ_BUF(4); 14744dc6ec00SJ. Bruce Fields READ32(rc->rca_one_fs); 14754dc6ec00SJ. Bruce Fields 14764dc6ec00SJ. Bruce Fields DECODE_TAIL; 14774dc6ec00SJ. Bruce Fields } 14784dc6ec00SJ. Bruce Fields 14792db134ebSAndy Adamson static __be32 1480347e0ad9SBenny Halevy nfsd4_decode_noop(struct nfsd4_compoundargs *argp, void *p) 1481347e0ad9SBenny Halevy { 1482347e0ad9SBenny Halevy return nfs_ok; 1483347e0ad9SBenny Halevy } 1484347e0ad9SBenny Halevy 14853c375c6fSBenny Halevy static __be32 14863c375c6fSBenny Halevy nfsd4_decode_notsupp(struct nfsd4_compoundargs *argp, void *p) 14873c375c6fSBenny Halevy { 14881e685ec2SBenny Halevy return nfserr_notsupp; 14893c375c6fSBenny Halevy } 14903c375c6fSBenny Halevy 1491347e0ad9SBenny Halevy typedef __be32(*nfsd4_dec)(struct nfsd4_compoundargs *argp, void *); 1492347e0ad9SBenny Halevy 1493347e0ad9SBenny Halevy static nfsd4_dec nfsd4_dec_ops[] = { 1494ad1060c8SJ. Bruce Fields [OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access, 1495ad1060c8SJ. Bruce Fields [OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close, 1496ad1060c8SJ. Bruce Fields [OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit, 1497ad1060c8SJ. Bruce Fields [OP_CREATE] = (nfsd4_dec)nfsd4_decode_create, 1498ad1060c8SJ. Bruce Fields [OP_DELEGPURGE] = (nfsd4_dec)nfsd4_decode_notsupp, 1499ad1060c8SJ. Bruce Fields [OP_DELEGRETURN] = (nfsd4_dec)nfsd4_decode_delegreturn, 1500ad1060c8SJ. Bruce Fields [OP_GETATTR] = (nfsd4_dec)nfsd4_decode_getattr, 1501ad1060c8SJ. Bruce Fields [OP_GETFH] = (nfsd4_dec)nfsd4_decode_noop, 1502ad1060c8SJ. Bruce Fields [OP_LINK] = (nfsd4_dec)nfsd4_decode_link, 1503ad1060c8SJ. Bruce Fields [OP_LOCK] = (nfsd4_dec)nfsd4_decode_lock, 1504ad1060c8SJ. Bruce Fields [OP_LOCKT] = (nfsd4_dec)nfsd4_decode_lockt, 1505ad1060c8SJ. Bruce Fields [OP_LOCKU] = (nfsd4_dec)nfsd4_decode_locku, 1506ad1060c8SJ. Bruce Fields [OP_LOOKUP] = (nfsd4_dec)nfsd4_decode_lookup, 1507ad1060c8SJ. Bruce Fields [OP_LOOKUPP] = (nfsd4_dec)nfsd4_decode_noop, 1508ad1060c8SJ. Bruce Fields [OP_NVERIFY] = (nfsd4_dec)nfsd4_decode_verify, 1509ad1060c8SJ. Bruce Fields [OP_OPEN] = (nfsd4_dec)nfsd4_decode_open, 1510ad1060c8SJ. Bruce Fields [OP_OPENATTR] = (nfsd4_dec)nfsd4_decode_notsupp, 1511ad1060c8SJ. Bruce Fields [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_open_confirm, 1512ad1060c8SJ. Bruce Fields [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade, 1513ad1060c8SJ. Bruce Fields [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh, 1514a1c8c4d1SJ. Bruce Fields [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_noop, 1515ad1060c8SJ. Bruce Fields [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop, 1516ad1060c8SJ. Bruce Fields [OP_READ] = (nfsd4_dec)nfsd4_decode_read, 1517ad1060c8SJ. Bruce Fields [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir, 1518ad1060c8SJ. Bruce Fields [OP_READLINK] = (nfsd4_dec)nfsd4_decode_noop, 1519ad1060c8SJ. Bruce Fields [OP_REMOVE] = (nfsd4_dec)nfsd4_decode_remove, 1520ad1060c8SJ. Bruce Fields [OP_RENAME] = (nfsd4_dec)nfsd4_decode_rename, 1521ad1060c8SJ. Bruce Fields [OP_RENEW] = (nfsd4_dec)nfsd4_decode_renew, 1522ad1060c8SJ. Bruce Fields [OP_RESTOREFH] = (nfsd4_dec)nfsd4_decode_noop, 1523ad1060c8SJ. Bruce Fields [OP_SAVEFH] = (nfsd4_dec)nfsd4_decode_noop, 1524ad1060c8SJ. Bruce Fields [OP_SECINFO] = (nfsd4_dec)nfsd4_decode_secinfo, 1525ad1060c8SJ. Bruce Fields [OP_SETATTR] = (nfsd4_dec)nfsd4_decode_setattr, 1526ad1060c8SJ. Bruce Fields [OP_SETCLIENTID] = (nfsd4_dec)nfsd4_decode_setclientid, 1527ad1060c8SJ. Bruce Fields [OP_SETCLIENTID_CONFIRM] = (nfsd4_dec)nfsd4_decode_setclientid_confirm, 1528ad1060c8SJ. Bruce Fields [OP_VERIFY] = (nfsd4_dec)nfsd4_decode_verify, 1529ad1060c8SJ. Bruce Fields [OP_WRITE] = (nfsd4_dec)nfsd4_decode_write, 1530ad1060c8SJ. Bruce Fields [OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_release_lockowner, 1531347e0ad9SBenny Halevy }; 1532347e0ad9SBenny Halevy 15332db134ebSAndy Adamson static nfsd4_dec nfsd41_dec_ops[] = { 15349064caaeSRandy Dunlap [OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access, 15359064caaeSRandy Dunlap [OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close, 15369064caaeSRandy Dunlap [OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit, 15379064caaeSRandy Dunlap [OP_CREATE] = (nfsd4_dec)nfsd4_decode_create, 15389064caaeSRandy Dunlap [OP_DELEGPURGE] = (nfsd4_dec)nfsd4_decode_notsupp, 15399064caaeSRandy Dunlap [OP_DELEGRETURN] = (nfsd4_dec)nfsd4_decode_delegreturn, 15409064caaeSRandy Dunlap [OP_GETATTR] = (nfsd4_dec)nfsd4_decode_getattr, 15419064caaeSRandy Dunlap [OP_GETFH] = (nfsd4_dec)nfsd4_decode_noop, 15429064caaeSRandy Dunlap [OP_LINK] = (nfsd4_dec)nfsd4_decode_link, 15439064caaeSRandy Dunlap [OP_LOCK] = (nfsd4_dec)nfsd4_decode_lock, 15449064caaeSRandy Dunlap [OP_LOCKT] = (nfsd4_dec)nfsd4_decode_lockt, 15459064caaeSRandy Dunlap [OP_LOCKU] = (nfsd4_dec)nfsd4_decode_locku, 15469064caaeSRandy Dunlap [OP_LOOKUP] = (nfsd4_dec)nfsd4_decode_lookup, 15479064caaeSRandy Dunlap [OP_LOOKUPP] = (nfsd4_dec)nfsd4_decode_noop, 15489064caaeSRandy Dunlap [OP_NVERIFY] = (nfsd4_dec)nfsd4_decode_verify, 15499064caaeSRandy Dunlap [OP_OPEN] = (nfsd4_dec)nfsd4_decode_open, 15509064caaeSRandy Dunlap [OP_OPENATTR] = (nfsd4_dec)nfsd4_decode_notsupp, 15519064caaeSRandy Dunlap [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_notsupp, 15529064caaeSRandy Dunlap [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade, 15539064caaeSRandy Dunlap [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh, 15549064caaeSRandy Dunlap [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_notsupp, 15559064caaeSRandy Dunlap [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop, 15569064caaeSRandy Dunlap [OP_READ] = (nfsd4_dec)nfsd4_decode_read, 15579064caaeSRandy Dunlap [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir, 15589064caaeSRandy Dunlap [OP_READLINK] = (nfsd4_dec)nfsd4_decode_noop, 15599064caaeSRandy Dunlap [OP_REMOVE] = (nfsd4_dec)nfsd4_decode_remove, 15609064caaeSRandy Dunlap [OP_RENAME] = (nfsd4_dec)nfsd4_decode_rename, 15619064caaeSRandy Dunlap [OP_RENEW] = (nfsd4_dec)nfsd4_decode_notsupp, 15629064caaeSRandy Dunlap [OP_RESTOREFH] = (nfsd4_dec)nfsd4_decode_noop, 15639064caaeSRandy Dunlap [OP_SAVEFH] = (nfsd4_dec)nfsd4_decode_noop, 15649064caaeSRandy Dunlap [OP_SECINFO] = (nfsd4_dec)nfsd4_decode_secinfo, 15659064caaeSRandy Dunlap [OP_SETATTR] = (nfsd4_dec)nfsd4_decode_setattr, 15669064caaeSRandy Dunlap [OP_SETCLIENTID] = (nfsd4_dec)nfsd4_decode_notsupp, 15679064caaeSRandy Dunlap [OP_SETCLIENTID_CONFIRM]= (nfsd4_dec)nfsd4_decode_notsupp, 15689064caaeSRandy Dunlap [OP_VERIFY] = (nfsd4_dec)nfsd4_decode_verify, 15699064caaeSRandy Dunlap [OP_WRITE] = (nfsd4_dec)nfsd4_decode_write, 15709064caaeSRandy Dunlap [OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_notsupp, 15712db134ebSAndy Adamson 15722db134ebSAndy Adamson /* new operations for NFSv4.1 */ 1573cb73a9f4SJ. Bruce Fields [OP_BACKCHANNEL_CTL] = (nfsd4_dec)nfsd4_decode_backchannel_ctl, 15741d1bc8f2SJ. Bruce Fields [OP_BIND_CONN_TO_SESSION]= (nfsd4_dec)nfsd4_decode_bind_conn_to_session, 15759064caaeSRandy Dunlap [OP_EXCHANGE_ID] = (nfsd4_dec)nfsd4_decode_exchange_id, 15769064caaeSRandy Dunlap [OP_CREATE_SESSION] = (nfsd4_dec)nfsd4_decode_create_session, 15779064caaeSRandy Dunlap [OP_DESTROY_SESSION] = (nfsd4_dec)nfsd4_decode_destroy_session, 1578e1ca12dfSBryan Schumaker [OP_FREE_STATEID] = (nfsd4_dec)nfsd4_decode_free_stateid, 15799064caaeSRandy Dunlap [OP_GET_DIR_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, 15809064caaeSRandy Dunlap [OP_GETDEVICEINFO] = (nfsd4_dec)nfsd4_decode_notsupp, 15819064caaeSRandy Dunlap [OP_GETDEVICELIST] = (nfsd4_dec)nfsd4_decode_notsupp, 15829064caaeSRandy Dunlap [OP_LAYOUTCOMMIT] = (nfsd4_dec)nfsd4_decode_notsupp, 15839064caaeSRandy Dunlap [OP_LAYOUTGET] = (nfsd4_dec)nfsd4_decode_notsupp, 15849064caaeSRandy Dunlap [OP_LAYOUTRETURN] = (nfsd4_dec)nfsd4_decode_notsupp, 158504f4ad16SJ. Bruce Fields [OP_SECINFO_NO_NAME] = (nfsd4_dec)nfsd4_decode_secinfo_no_name, 15869064caaeSRandy Dunlap [OP_SEQUENCE] = (nfsd4_dec)nfsd4_decode_sequence, 15879064caaeSRandy Dunlap [OP_SET_SSV] = (nfsd4_dec)nfsd4_decode_notsupp, 158817456804SBryan Schumaker [OP_TEST_STATEID] = (nfsd4_dec)nfsd4_decode_test_stateid, 15899064caaeSRandy Dunlap [OP_WANT_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, 1590345c2842SMi Jinlong [OP_DESTROY_CLIENTID] = (nfsd4_dec)nfsd4_decode_destroy_clientid, 15914dc6ec00SJ. Bruce Fields [OP_RECLAIM_COMPLETE] = (nfsd4_dec)nfsd4_decode_reclaim_complete, 15922db134ebSAndy Adamson }; 15932db134ebSAndy Adamson 1594f2feb96bSBenny Halevy struct nfsd4_minorversion_ops { 1595f2feb96bSBenny Halevy nfsd4_dec *decoders; 1596f2feb96bSBenny Halevy int nops; 1597f2feb96bSBenny Halevy }; 1598f2feb96bSBenny Halevy 1599f2feb96bSBenny Halevy static struct nfsd4_minorversion_ops nfsd4_minorversion[] = { 1600ad1060c8SJ. Bruce Fields [0] = { nfsd4_dec_ops, ARRAY_SIZE(nfsd4_dec_ops) }, 16012db134ebSAndy Adamson [1] = { nfsd41_dec_ops, ARRAY_SIZE(nfsd41_dec_ops) }, 16024bdc33edSSteve Dickson [2] = { nfsd41_dec_ops, ARRAY_SIZE(nfsd41_dec_ops) }, 1603f2feb96bSBenny Halevy }; 1604f2feb96bSBenny Halevy 1605347e0ad9SBenny Halevy static __be32 16061da177e4SLinus Torvalds nfsd4_decode_compound(struct nfsd4_compoundargs *argp) 16071da177e4SLinus Torvalds { 16081da177e4SLinus Torvalds DECODE_HEAD; 16091da177e4SLinus Torvalds struct nfsd4_op *op; 1610f2feb96bSBenny Halevy struct nfsd4_minorversion_ops *ops; 16111091006cSJ. Bruce Fields bool cachethis = false; 16121da177e4SLinus Torvalds int i; 16131da177e4SLinus Torvalds 16141da177e4SLinus Torvalds READ_BUF(4); 16151da177e4SLinus Torvalds READ32(argp->taglen); 16161da177e4SLinus Torvalds READ_BUF(argp->taglen + 8); 16171da177e4SLinus Torvalds SAVEMEM(argp->tag, argp->taglen); 16181da177e4SLinus Torvalds READ32(argp->minorversion); 16191da177e4SLinus Torvalds READ32(argp->opcnt); 16201da177e4SLinus Torvalds 16211da177e4SLinus Torvalds if (argp->taglen > NFSD4_MAX_TAGLEN) 16221da177e4SLinus Torvalds goto xdr_error; 16231da177e4SLinus Torvalds if (argp->opcnt > 100) 16241da177e4SLinus Torvalds goto xdr_error; 16251da177e4SLinus Torvalds 1626e8c96f8cSTobias Klauser if (argp->opcnt > ARRAY_SIZE(argp->iops)) { 16271da177e4SLinus Torvalds argp->ops = kmalloc(argp->opcnt * sizeof(*argp->ops), GFP_KERNEL); 16281da177e4SLinus Torvalds if (!argp->ops) { 16291da177e4SLinus Torvalds argp->ops = argp->iops; 1630817cb9d4SChuck Lever dprintk("nfsd: couldn't allocate room for COMPOUND\n"); 16311da177e4SLinus Torvalds goto xdr_error; 16321da177e4SLinus Torvalds } 16331da177e4SLinus Torvalds } 16341da177e4SLinus Torvalds 1635f2feb96bSBenny Halevy if (argp->minorversion >= ARRAY_SIZE(nfsd4_minorversion)) 163630cff1ffSBenny Halevy argp->opcnt = 0; 163730cff1ffSBenny Halevy 1638f2feb96bSBenny Halevy ops = &nfsd4_minorversion[argp->minorversion]; 16391da177e4SLinus Torvalds for (i = 0; i < argp->opcnt; i++) { 16401da177e4SLinus Torvalds op = &argp->ops[i]; 16411da177e4SLinus Torvalds op->replay = NULL; 16421da177e4SLinus Torvalds 16438a61b18cSJ. Bruce Fields READ_BUF(4); 16448a61b18cSJ. Bruce Fields READ32(op->opnum); 16451da177e4SLinus Torvalds 1646de3cab79SRicardo Labiaga if (op->opnum >= FIRST_NFS4_OP && op->opnum <= LAST_NFS4_OP) 1647f2feb96bSBenny Halevy op->status = ops->decoders[op->opnum](argp, &op->u); 1648347e0ad9SBenny Halevy else { 16491da177e4SLinus Torvalds op->opnum = OP_ILLEGAL; 16501da177e4SLinus Torvalds op->status = nfserr_op_illegal; 16511da177e4SLinus Torvalds } 16521da177e4SLinus Torvalds 16531da177e4SLinus Torvalds if (op->status) { 16541da177e4SLinus Torvalds argp->opcnt = i+1; 16551da177e4SLinus Torvalds break; 16561da177e4SLinus Torvalds } 16571091006cSJ. Bruce Fields /* 16581091006cSJ. Bruce Fields * We'll try to cache the result in the DRC if any one 16591091006cSJ. Bruce Fields * op in the compound wants to be cached: 16601091006cSJ. Bruce Fields */ 16611091006cSJ. Bruce Fields cachethis |= nfsd4_cache_this_op(op); 16621da177e4SLinus Torvalds } 16631091006cSJ. Bruce Fields /* Sessions make the DRC unnecessary: */ 16641091006cSJ. Bruce Fields if (argp->minorversion) 16651091006cSJ. Bruce Fields cachethis = false; 16661091006cSJ. Bruce Fields argp->rqstp->rq_cachetype = cachethis ? RC_REPLBUFF : RC_NOCACHE; 16671da177e4SLinus Torvalds 16681da177e4SLinus Torvalds DECODE_TAIL; 16691da177e4SLinus Torvalds } 16701da177e4SLinus Torvalds 16711da177e4SLinus Torvalds #define WRITE32(n) *p++ = htonl(n) 16721da177e4SLinus Torvalds #define WRITE64(n) do { \ 16731da177e4SLinus Torvalds *p++ = htonl((u32)((n) >> 32)); \ 16741da177e4SLinus Torvalds *p++ = htonl((u32)(n)); \ 16751da177e4SLinus Torvalds } while (0) 16765108b276SHarvey Harrison #define WRITEMEM(ptr,nbytes) do { if (nbytes > 0) { \ 16771da177e4SLinus Torvalds *(p + XDR_QUADLEN(nbytes) -1) = 0; \ 16781da177e4SLinus Torvalds memcpy(p, ptr, nbytes); \ 16791da177e4SLinus Torvalds p += XDR_QUADLEN(nbytes); \ 16805108b276SHarvey Harrison }} while (0) 1681c654b8a9SJ. Bruce Fields 1682c654b8a9SJ. Bruce Fields static void write32(__be32 **p, u32 n) 1683c654b8a9SJ. Bruce Fields { 168445eaa1c1SJ. Bruce Fields *(*p)++ = htonl(n); 1685c654b8a9SJ. Bruce Fields } 1686c654b8a9SJ. Bruce Fields 1687c654b8a9SJ. Bruce Fields static void write64(__be32 **p, u64 n) 1688c654b8a9SJ. Bruce Fields { 168945eaa1c1SJ. Bruce Fields write32(p, (n >> 32)); 1690c654b8a9SJ. Bruce Fields write32(p, (u32)n); 1691c654b8a9SJ. Bruce Fields } 1692c654b8a9SJ. Bruce Fields 1693c654b8a9SJ. Bruce Fields static void write_change(__be32 **p, struct kstat *stat, struct inode *inode) 1694c654b8a9SJ. Bruce Fields { 1695c654b8a9SJ. Bruce Fields if (IS_I_VERSION(inode)) { 1696c654b8a9SJ. Bruce Fields write64(p, inode->i_version); 1697c654b8a9SJ. Bruce Fields } else { 1698c654b8a9SJ. Bruce Fields write32(p, stat->ctime.tv_sec); 1699c654b8a9SJ. Bruce Fields write32(p, stat->ctime.tv_nsec); 1700c654b8a9SJ. Bruce Fields } 1701c654b8a9SJ. Bruce Fields } 1702c654b8a9SJ. Bruce Fields 1703c654b8a9SJ. Bruce Fields static void write_cinfo(__be32 **p, struct nfsd4_change_info *c) 1704c654b8a9SJ. Bruce Fields { 1705c654b8a9SJ. Bruce Fields write32(p, c->atomic); 1706c654b8a9SJ. Bruce Fields if (c->change_supported) { 1707c654b8a9SJ. Bruce Fields write64(p, c->before_change); 1708c654b8a9SJ. Bruce Fields write64(p, c->after_change); 1709c654b8a9SJ. Bruce Fields } else { 1710c654b8a9SJ. Bruce Fields write32(p, c->before_ctime_sec); 1711c654b8a9SJ. Bruce Fields write32(p, c->before_ctime_nsec); 1712c654b8a9SJ. Bruce Fields write32(p, c->after_ctime_sec); 1713c654b8a9SJ. Bruce Fields write32(p, c->after_ctime_nsec); 1714c654b8a9SJ. Bruce Fields } 1715c654b8a9SJ. Bruce Fields } 17161da177e4SLinus Torvalds 17171da177e4SLinus Torvalds #define RESERVE_SPACE(nbytes) do { \ 17181da177e4SLinus Torvalds p = resp->p; \ 17191da177e4SLinus Torvalds BUG_ON(p + XDR_QUADLEN(nbytes) > resp->end); \ 17201da177e4SLinus Torvalds } while (0) 17211da177e4SLinus Torvalds #define ADJUST_ARGS() resp->p = p 17221da177e4SLinus Torvalds 172381c3f413SJ.Bruce Fields /* Encode as an array of strings the string given with components 1724e7a0444aSWeston Andros Adamson * separated @sep, escaped with esc_enter and esc_exit. 172581c3f413SJ.Bruce Fields */ 1726e7a0444aSWeston Andros Adamson static __be32 nfsd4_encode_components_esc(char sep, char *components, 1727e7a0444aSWeston Andros Adamson __be32 **pp, int *buflen, 1728e7a0444aSWeston Andros Adamson char esc_enter, char esc_exit) 172981c3f413SJ.Bruce Fields { 17302ebbc012SAl Viro __be32 *p = *pp; 17312ebbc012SAl Viro __be32 *countp = p; 173281c3f413SJ.Bruce Fields int strlen, count=0; 1733e7a0444aSWeston Andros Adamson char *str, *end, *next; 173481c3f413SJ.Bruce Fields 173581c3f413SJ.Bruce Fields dprintk("nfsd4_encode_components(%s)\n", components); 173681c3f413SJ.Bruce Fields if ((*buflen -= 4) < 0) 173781c3f413SJ.Bruce Fields return nfserr_resource; 173881c3f413SJ.Bruce Fields WRITE32(0); /* We will fill this in with @count later */ 173981c3f413SJ.Bruce Fields end = str = components; 174081c3f413SJ.Bruce Fields while (*end) { 1741e7a0444aSWeston Andros Adamson bool found_esc = false; 1742e7a0444aSWeston Andros Adamson 1743e7a0444aSWeston Andros Adamson /* try to parse as esc_start, ..., esc_end, sep */ 1744e7a0444aSWeston Andros Adamson if (*str == esc_enter) { 1745e7a0444aSWeston Andros Adamson for (; *end && (*end != esc_exit); end++) 1746e7a0444aSWeston Andros Adamson /* find esc_exit or end of string */; 1747e7a0444aSWeston Andros Adamson next = end + 1; 1748e7a0444aSWeston Andros Adamson if (*end && (!*next || *next == sep)) { 1749e7a0444aSWeston Andros Adamson str++; 1750e7a0444aSWeston Andros Adamson found_esc = true; 1751e7a0444aSWeston Andros Adamson } 1752e7a0444aSWeston Andros Adamson } 1753e7a0444aSWeston Andros Adamson 1754e7a0444aSWeston Andros Adamson if (!found_esc) 175581c3f413SJ.Bruce Fields for (; *end && (*end != sep); end++) 1756e7a0444aSWeston Andros Adamson /* find sep or end of string */; 1757e7a0444aSWeston Andros Adamson 175881c3f413SJ.Bruce Fields strlen = end - str; 175981c3f413SJ.Bruce Fields if (strlen) { 176081c3f413SJ.Bruce Fields if ((*buflen -= ((XDR_QUADLEN(strlen) << 2) + 4)) < 0) 176181c3f413SJ.Bruce Fields return nfserr_resource; 176281c3f413SJ.Bruce Fields WRITE32(strlen); 176381c3f413SJ.Bruce Fields WRITEMEM(str, strlen); 176481c3f413SJ.Bruce Fields count++; 176581c3f413SJ.Bruce Fields } 176681c3f413SJ.Bruce Fields else 176781c3f413SJ.Bruce Fields end++; 176881c3f413SJ.Bruce Fields str = end; 176981c3f413SJ.Bruce Fields } 177081c3f413SJ.Bruce Fields *pp = p; 177181c3f413SJ.Bruce Fields p = countp; 177281c3f413SJ.Bruce Fields WRITE32(count); 177381c3f413SJ.Bruce Fields return 0; 177481c3f413SJ.Bruce Fields } 177581c3f413SJ.Bruce Fields 1776e7a0444aSWeston Andros Adamson /* Encode as an array of strings the string given with components 1777e7a0444aSWeston Andros Adamson * separated @sep. 1778e7a0444aSWeston Andros Adamson */ 1779e7a0444aSWeston Andros Adamson static __be32 nfsd4_encode_components(char sep, char *components, 1780e7a0444aSWeston Andros Adamson __be32 **pp, int *buflen) 1781e7a0444aSWeston Andros Adamson { 1782e7a0444aSWeston Andros Adamson return nfsd4_encode_components_esc(sep, components, pp, buflen, 0, 0); 1783e7a0444aSWeston Andros Adamson } 1784e7a0444aSWeston Andros Adamson 178581c3f413SJ.Bruce Fields /* 178681c3f413SJ.Bruce Fields * encode a location element of a fs_locations structure 178781c3f413SJ.Bruce Fields */ 1788b37ad28bSAl Viro static __be32 nfsd4_encode_fs_location4(struct nfsd4_fs_location *location, 17892ebbc012SAl Viro __be32 **pp, int *buflen) 179081c3f413SJ.Bruce Fields { 1791b37ad28bSAl Viro __be32 status; 17922ebbc012SAl Viro __be32 *p = *pp; 179381c3f413SJ.Bruce Fields 1794e7a0444aSWeston Andros Adamson status = nfsd4_encode_components_esc(':', location->hosts, &p, buflen, 1795e7a0444aSWeston Andros Adamson '[', ']'); 179681c3f413SJ.Bruce Fields if (status) 179781c3f413SJ.Bruce Fields return status; 179881c3f413SJ.Bruce Fields status = nfsd4_encode_components('/', location->path, &p, buflen); 179981c3f413SJ.Bruce Fields if (status) 180081c3f413SJ.Bruce Fields return status; 180181c3f413SJ.Bruce Fields *pp = p; 180281c3f413SJ.Bruce Fields return 0; 180381c3f413SJ.Bruce Fields } 180481c3f413SJ.Bruce Fields 180581c3f413SJ.Bruce Fields /* 1806ed748aacSTrond Myklebust * Encode a path in RFC3530 'pathname4' format 180781c3f413SJ.Bruce Fields */ 1808ed748aacSTrond Myklebust static __be32 nfsd4_encode_path(const struct path *root, 1809ed748aacSTrond Myklebust const struct path *path, __be32 **pp, int *buflen) 181081c3f413SJ.Bruce Fields { 1811ed748aacSTrond Myklebust struct path cur = { 1812ed748aacSTrond Myklebust .mnt = path->mnt, 1813ed748aacSTrond Myklebust .dentry = path->dentry, 1814ed748aacSTrond Myklebust }; 1815ed748aacSTrond Myklebust __be32 *p = *pp; 1816ed748aacSTrond Myklebust struct dentry **components = NULL; 1817ed748aacSTrond Myklebust unsigned int ncomponents = 0; 1818ed748aacSTrond Myklebust __be32 err = nfserr_jukebox; 181981c3f413SJ.Bruce Fields 1820ed748aacSTrond Myklebust dprintk("nfsd4_encode_components("); 182181c3f413SJ.Bruce Fields 1822ed748aacSTrond Myklebust path_get(&cur); 1823ed748aacSTrond Myklebust /* First walk the path up to the nfsd root, and store the 1824ed748aacSTrond Myklebust * dentries/path components in an array. 1825ed748aacSTrond Myklebust */ 1826ed748aacSTrond Myklebust for (;;) { 1827ed748aacSTrond Myklebust if (cur.dentry == root->dentry && cur.mnt == root->mnt) 1828ed748aacSTrond Myklebust break; 1829ed748aacSTrond Myklebust if (cur.dentry == cur.mnt->mnt_root) { 1830ed748aacSTrond Myklebust if (follow_up(&cur)) 1831ed748aacSTrond Myklebust continue; 1832ed748aacSTrond Myklebust goto out_free; 183381c3f413SJ.Bruce Fields } 1834ed748aacSTrond Myklebust if ((ncomponents & 15) == 0) { 1835ed748aacSTrond Myklebust struct dentry **new; 1836ed748aacSTrond Myklebust new = krealloc(components, 1837ed748aacSTrond Myklebust sizeof(*new) * (ncomponents + 16), 1838ed748aacSTrond Myklebust GFP_KERNEL); 1839ed748aacSTrond Myklebust if (!new) 1840ed748aacSTrond Myklebust goto out_free; 1841ed748aacSTrond Myklebust components = new; 1842ed748aacSTrond Myklebust } 1843ed748aacSTrond Myklebust components[ncomponents++] = cur.dentry; 1844ed748aacSTrond Myklebust cur.dentry = dget_parent(cur.dentry); 1845ed748aacSTrond Myklebust } 1846ed748aacSTrond Myklebust 1847ed748aacSTrond Myklebust *buflen -= 4; 1848ed748aacSTrond Myklebust if (*buflen < 0) 1849ed748aacSTrond Myklebust goto out_free; 1850ed748aacSTrond Myklebust WRITE32(ncomponents); 1851ed748aacSTrond Myklebust 1852ed748aacSTrond Myklebust while (ncomponents) { 1853ed748aacSTrond Myklebust struct dentry *dentry = components[ncomponents - 1]; 1854ed748aacSTrond Myklebust unsigned int len = dentry->d_name.len; 1855ed748aacSTrond Myklebust 1856ed748aacSTrond Myklebust *buflen -= 4 + (XDR_QUADLEN(len) << 2); 1857ed748aacSTrond Myklebust if (*buflen < 0) 1858ed748aacSTrond Myklebust goto out_free; 1859ed748aacSTrond Myklebust WRITE32(len); 1860ed748aacSTrond Myklebust WRITEMEM(dentry->d_name.name, len); 1861ed748aacSTrond Myklebust dprintk("/%s", dentry->d_name.name); 1862ed748aacSTrond Myklebust dput(dentry); 1863ed748aacSTrond Myklebust ncomponents--; 1864ed748aacSTrond Myklebust } 1865ed748aacSTrond Myklebust 1866ed748aacSTrond Myklebust *pp = p; 1867ed748aacSTrond Myklebust err = 0; 1868ed748aacSTrond Myklebust out_free: 1869ed748aacSTrond Myklebust dprintk(")\n"); 1870ed748aacSTrond Myklebust while (ncomponents) 1871ed748aacSTrond Myklebust dput(components[--ncomponents]); 1872ed748aacSTrond Myklebust kfree(components); 1873ed748aacSTrond Myklebust path_put(&cur); 1874ed748aacSTrond Myklebust return err; 1875ed748aacSTrond Myklebust } 1876ed748aacSTrond Myklebust 1877ed748aacSTrond Myklebust static __be32 nfsd4_encode_fsloc_fsroot(struct svc_rqst *rqstp, 1878ed748aacSTrond Myklebust const struct path *path, __be32 **pp, int *buflen) 1879ed748aacSTrond Myklebust { 1880ed748aacSTrond Myklebust struct svc_export *exp_ps; 1881ed748aacSTrond Myklebust __be32 res; 1882ed748aacSTrond Myklebust 1883ed748aacSTrond Myklebust exp_ps = rqst_find_fsidzero_export(rqstp); 1884ed748aacSTrond Myklebust if (IS_ERR(exp_ps)) 1885ed748aacSTrond Myklebust return nfserrno(PTR_ERR(exp_ps)); 1886ed748aacSTrond Myklebust res = nfsd4_encode_path(&exp_ps->ex_path, path, pp, buflen); 1887ed748aacSTrond Myklebust exp_put(exp_ps); 1888ed748aacSTrond Myklebust return res; 188981c3f413SJ.Bruce Fields } 189081c3f413SJ.Bruce Fields 189181c3f413SJ.Bruce Fields /* 189281c3f413SJ.Bruce Fields * encode a fs_locations structure 189381c3f413SJ.Bruce Fields */ 1894b37ad28bSAl Viro static __be32 nfsd4_encode_fs_locations(struct svc_rqst *rqstp, 189581c3f413SJ.Bruce Fields struct svc_export *exp, 18962ebbc012SAl Viro __be32 **pp, int *buflen) 189781c3f413SJ.Bruce Fields { 1898b37ad28bSAl Viro __be32 status; 1899cc45f017SAl Viro int i; 19002ebbc012SAl Viro __be32 *p = *pp; 190181c3f413SJ.Bruce Fields struct nfsd4_fs_locations *fslocs = &exp->ex_fslocs; 190281c3f413SJ.Bruce Fields 1903ed748aacSTrond Myklebust status = nfsd4_encode_fsloc_fsroot(rqstp, &exp->ex_path, &p, buflen); 190481c3f413SJ.Bruce Fields if (status) 190581c3f413SJ.Bruce Fields return status; 190681c3f413SJ.Bruce Fields if ((*buflen -= 4) < 0) 190781c3f413SJ.Bruce Fields return nfserr_resource; 190881c3f413SJ.Bruce Fields WRITE32(fslocs->locations_count); 190981c3f413SJ.Bruce Fields for (i=0; i<fslocs->locations_count; i++) { 191081c3f413SJ.Bruce Fields status = nfsd4_encode_fs_location4(&fslocs->locations[i], 191181c3f413SJ.Bruce Fields &p, buflen); 191281c3f413SJ.Bruce Fields if (status) 191381c3f413SJ.Bruce Fields return status; 191481c3f413SJ.Bruce Fields } 191581c3f413SJ.Bruce Fields *pp = p; 191681c3f413SJ.Bruce Fields return 0; 191781c3f413SJ.Bruce Fields } 19181da177e4SLinus Torvalds 19193d2544b1SJ. Bruce Fields static u32 nfs4_file_type(umode_t mode) 19203d2544b1SJ. Bruce Fields { 19213d2544b1SJ. Bruce Fields switch (mode & S_IFMT) { 19223d2544b1SJ. Bruce Fields case S_IFIFO: return NF4FIFO; 19233d2544b1SJ. Bruce Fields case S_IFCHR: return NF4CHR; 19243d2544b1SJ. Bruce Fields case S_IFDIR: return NF4DIR; 19253d2544b1SJ. Bruce Fields case S_IFBLK: return NF4BLK; 19263d2544b1SJ. Bruce Fields case S_IFLNK: return NF4LNK; 19273d2544b1SJ. Bruce Fields case S_IFREG: return NF4REG; 19283d2544b1SJ. Bruce Fields case S_IFSOCK: return NF4SOCK; 19293d2544b1SJ. Bruce Fields default: return NF4BAD; 19301da177e4SLinus Torvalds }; 19313d2544b1SJ. Bruce Fields } 19321da177e4SLinus Torvalds 1933b37ad28bSAl Viro static __be32 1934ab8e4aeeSEric W. Biederman nfsd4_encode_name(struct svc_rqst *rqstp, int whotype, kuid_t uid, kgid_t gid, 19352ebbc012SAl Viro __be32 **p, int *buflen) 19361da177e4SLinus Torvalds { 19371da177e4SLinus Torvalds int status; 19381da177e4SLinus Torvalds 19391da177e4SLinus Torvalds if (*buflen < (XDR_QUADLEN(IDMAP_NAMESZ) << 2) + 4) 19401da177e4SLinus Torvalds return nfserr_resource; 19411da177e4SLinus Torvalds if (whotype != NFS4_ACL_WHO_NAMED) 19421da177e4SLinus Torvalds status = nfs4_acl_write_who(whotype, (u8 *)(*p + 1)); 1943ab8e4aeeSEric W. Biederman else if (gid_valid(gid)) 1944ab8e4aeeSEric W. Biederman status = nfsd_map_gid_to_name(rqstp, gid, (u8 *)(*p + 1)); 19451da177e4SLinus Torvalds else 1946ab8e4aeeSEric W. Biederman status = nfsd_map_uid_to_name(rqstp, uid, (u8 *)(*p + 1)); 19471da177e4SLinus Torvalds if (status < 0) 19481da177e4SLinus Torvalds return nfserrno(status); 19491da177e4SLinus Torvalds *p = xdr_encode_opaque(*p, NULL, status); 19501da177e4SLinus Torvalds *buflen -= (XDR_QUADLEN(status) << 2) + 4; 19511da177e4SLinus Torvalds BUG_ON(*buflen < 0); 19521da177e4SLinus Torvalds return 0; 19531da177e4SLinus Torvalds } 19541da177e4SLinus Torvalds 1955b37ad28bSAl Viro static inline __be32 1956ab8e4aeeSEric W. Biederman nfsd4_encode_user(struct svc_rqst *rqstp, kuid_t user, __be32 **p, int *buflen) 19571da177e4SLinus Torvalds { 1958ab8e4aeeSEric W. Biederman return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, user, INVALID_GID, 1959ab8e4aeeSEric W. Biederman p, buflen); 19601da177e4SLinus Torvalds } 19611da177e4SLinus Torvalds 1962b37ad28bSAl Viro static inline __be32 1963ab8e4aeeSEric W. Biederman nfsd4_encode_group(struct svc_rqst *rqstp, kgid_t group, __be32 **p, int *buflen) 19641da177e4SLinus Torvalds { 1965ab8e4aeeSEric W. Biederman return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, INVALID_UID, group, 1966ab8e4aeeSEric W. Biederman p, buflen); 19671da177e4SLinus Torvalds } 19681da177e4SLinus Torvalds 1969b37ad28bSAl Viro static inline __be32 1970ab8e4aeeSEric W. Biederman nfsd4_encode_aclname(struct svc_rqst *rqstp, struct nfs4_ace *ace, 19712ebbc012SAl Viro __be32 **p, int *buflen) 19721da177e4SLinus Torvalds { 1973ab8e4aeeSEric W. Biederman kuid_t uid = INVALID_UID; 1974ab8e4aeeSEric W. Biederman kgid_t gid = INVALID_GID; 1975ab8e4aeeSEric W. Biederman 1976ab8e4aeeSEric W. Biederman if (ace->whotype == NFS4_ACL_WHO_NAMED) { 1977ab8e4aeeSEric W. Biederman if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP) 1978ab8e4aeeSEric W. Biederman gid = ace->who_gid; 1979ab8e4aeeSEric W. Biederman else 1980ab8e4aeeSEric W. Biederman uid = ace->who_uid; 1981ab8e4aeeSEric W. Biederman } 1982ab8e4aeeSEric W. Biederman return nfsd4_encode_name(rqstp, ace->whotype, uid, gid, p, buflen); 19831da177e4SLinus Torvalds } 19841da177e4SLinus Torvalds 198542ca0993SJ.Bruce Fields #define WORD0_ABSENT_FS_ATTRS (FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_FSID | \ 198642ca0993SJ.Bruce Fields FATTR4_WORD0_RDATTR_ERROR) 198742ca0993SJ.Bruce Fields #define WORD1_ABSENT_FS_ATTRS FATTR4_WORD1_MOUNTED_ON_FILEID 198842ca0993SJ.Bruce Fields 198918032ca0SDavid Quigley #ifdef CONFIG_NFSD_V4_SECURITY_LABEL 199018032ca0SDavid Quigley static inline __be32 199118032ca0SDavid Quigley nfsd4_encode_security_label(struct svc_rqst *rqstp, void *context, int len, __be32 **pp, int *buflen) 199218032ca0SDavid Quigley { 199318032ca0SDavid Quigley __be32 *p = *pp; 199418032ca0SDavid Quigley 199518032ca0SDavid Quigley if (*buflen < ((XDR_QUADLEN(len) << 2) + 4 + 4 + 4)) 199618032ca0SDavid Quigley return nfserr_resource; 199718032ca0SDavid Quigley 199818032ca0SDavid Quigley /* 199918032ca0SDavid Quigley * For now we use a 0 here to indicate the null translation; in 200018032ca0SDavid Quigley * the future we may place a call to translation code here. 200118032ca0SDavid Quigley */ 200218032ca0SDavid Quigley if ((*buflen -= 8) < 0) 200318032ca0SDavid Quigley return nfserr_resource; 200418032ca0SDavid Quigley 200518032ca0SDavid Quigley WRITE32(0); /* lfs */ 200618032ca0SDavid Quigley WRITE32(0); /* pi */ 200718032ca0SDavid Quigley p = xdr_encode_opaque(p, context, len); 200818032ca0SDavid Quigley *buflen -= (XDR_QUADLEN(len) << 2) + 4; 200918032ca0SDavid Quigley 201018032ca0SDavid Quigley *pp = p; 201118032ca0SDavid Quigley return 0; 201218032ca0SDavid Quigley } 201318032ca0SDavid Quigley #else 201418032ca0SDavid Quigley static inline __be32 2015ba4e55bbSJ. Bruce Fields nfsd4_encode_security_label(struct svc_rqst *rqstp, void *context, int len, __be32 **pp, int *buflen) 201618032ca0SDavid Quigley { return 0; } 201718032ca0SDavid Quigley #endif 201818032ca0SDavid Quigley 2019b37ad28bSAl Viro static __be32 fattr_handle_absent_fs(u32 *bmval0, u32 *bmval1, u32 *rdattr_err) 202042ca0993SJ.Bruce Fields { 202142ca0993SJ.Bruce Fields /* As per referral draft: */ 202242ca0993SJ.Bruce Fields if (*bmval0 & ~WORD0_ABSENT_FS_ATTRS || 202342ca0993SJ.Bruce Fields *bmval1 & ~WORD1_ABSENT_FS_ATTRS) { 202442ca0993SJ.Bruce Fields if (*bmval0 & FATTR4_WORD0_RDATTR_ERROR || 202542ca0993SJ.Bruce Fields *bmval0 & FATTR4_WORD0_FS_LOCATIONS) 202642ca0993SJ.Bruce Fields *rdattr_err = NFSERR_MOVED; 202742ca0993SJ.Bruce Fields else 202842ca0993SJ.Bruce Fields return nfserr_moved; 202942ca0993SJ.Bruce Fields } 203042ca0993SJ.Bruce Fields *bmval0 &= WORD0_ABSENT_FS_ATTRS; 203142ca0993SJ.Bruce Fields *bmval1 &= WORD1_ABSENT_FS_ATTRS; 203242ca0993SJ.Bruce Fields return 0; 203342ca0993SJ.Bruce Fields } 20341da177e4SLinus Torvalds 2035ae7095a7SJ. Bruce Fields 2036ae7095a7SJ. Bruce Fields static int get_parent_attributes(struct svc_export *exp, struct kstat *stat) 2037ae7095a7SJ. Bruce Fields { 2038ae7095a7SJ. Bruce Fields struct path path = exp->ex_path; 2039ae7095a7SJ. Bruce Fields int err; 2040ae7095a7SJ. Bruce Fields 2041ae7095a7SJ. Bruce Fields path_get(&path); 2042ae7095a7SJ. Bruce Fields while (follow_up(&path)) { 2043ae7095a7SJ. Bruce Fields if (path.dentry != path.mnt->mnt_root) 2044ae7095a7SJ. Bruce Fields break; 2045ae7095a7SJ. Bruce Fields } 20463dadecceSAl Viro err = vfs_getattr(&path, stat); 2047ae7095a7SJ. Bruce Fields path_put(&path); 2048ae7095a7SJ. Bruce Fields return err; 2049ae7095a7SJ. Bruce Fields } 2050ae7095a7SJ. Bruce Fields 20511da177e4SLinus Torvalds /* 20521da177e4SLinus Torvalds * Note: @fhp can be NULL; in this case, we might have to compose the filehandle 20531da177e4SLinus Torvalds * ourselves. 20541da177e4SLinus Torvalds * 205584822d0bSJ. Bruce Fields * countp is the buffer size in _words_ 20561da177e4SLinus Torvalds */ 2057b37ad28bSAl Viro __be32 20581da177e4SLinus Torvalds nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp, 205984822d0bSJ. Bruce Fields struct dentry *dentry, __be32 **buffer, int count, u32 *bmval, 2060406a7ea9SFrank Filz struct svc_rqst *rqstp, int ignore_crossmnt) 20611da177e4SLinus Torvalds { 20621da177e4SLinus Torvalds u32 bmval0 = bmval[0]; 20631da177e4SLinus Torvalds u32 bmval1 = bmval[1]; 20647e705706SAndy Adamson u32 bmval2 = bmval[2]; 20651da177e4SLinus Torvalds struct kstat stat; 20661da177e4SLinus Torvalds struct svc_fh tempfh; 20671da177e4SLinus Torvalds struct kstatfs statfs; 206884822d0bSJ. Bruce Fields int buflen = count << 2; 20692ebbc012SAl Viro __be32 *attrlenp; 20701da177e4SLinus Torvalds u32 dummy; 20711da177e4SLinus Torvalds u64 dummy64; 207242ca0993SJ.Bruce Fields u32 rdattr_err = 0; 207384822d0bSJ. Bruce Fields __be32 *p = *buffer; 2074b37ad28bSAl Viro __be32 status; 2075b8dd7b9aSAl Viro int err; 20761da177e4SLinus Torvalds int aclsupport = 0; 20771da177e4SLinus Torvalds struct nfs4_acl *acl = NULL; 207818032ca0SDavid Quigley void *context = NULL; 207918032ca0SDavid Quigley int contextlen; 208018032ca0SDavid Quigley bool contextsupport = false; 20817e705706SAndy Adamson struct nfsd4_compoundres *resp = rqstp->rq_resp; 20827e705706SAndy Adamson u32 minorversion = resp->cstate.minorversion; 2083ebabe9a9SChristoph Hellwig struct path path = { 2084ebabe9a9SChristoph Hellwig .mnt = exp->ex_path.mnt, 2085ebabe9a9SChristoph Hellwig .dentry = dentry, 2086ebabe9a9SChristoph Hellwig }; 20873d733711SStanislav Kinsbursky struct nfsd_net *nn = net_generic(SVC_NET(rqstp), nfsd_net_id); 20881da177e4SLinus Torvalds 20891da177e4SLinus Torvalds BUG_ON(bmval1 & NFSD_WRITEONLY_ATTRS_WORD1); 20907e705706SAndy Adamson BUG_ON(bmval0 & ~nfsd_suppattrs0(minorversion)); 20917e705706SAndy Adamson BUG_ON(bmval1 & ~nfsd_suppattrs1(minorversion)); 20927e705706SAndy Adamson BUG_ON(bmval2 & ~nfsd_suppattrs2(minorversion)); 20931da177e4SLinus Torvalds 209442ca0993SJ.Bruce Fields if (exp->ex_fslocs.migrated) { 20957e705706SAndy Adamson BUG_ON(bmval[2]); 209642ca0993SJ.Bruce Fields status = fattr_handle_absent_fs(&bmval0, &bmval1, &rdattr_err); 209742ca0993SJ.Bruce Fields if (status) 209842ca0993SJ.Bruce Fields goto out; 209942ca0993SJ.Bruce Fields } 210042ca0993SJ.Bruce Fields 21013dadecceSAl Viro err = vfs_getattr(&path, &stat); 2102b8dd7b9aSAl Viro if (err) 21031da177e4SLinus Torvalds goto out_nfserr; 2104a16e92edSJ. Bruce Fields if ((bmval0 & (FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL | 2105a16e92edSJ. Bruce Fields FATTR4_WORD0_MAXNAME)) || 21061da177e4SLinus Torvalds (bmval1 & (FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | 21071da177e4SLinus Torvalds FATTR4_WORD1_SPACE_TOTAL))) { 2108ebabe9a9SChristoph Hellwig err = vfs_statfs(&path, &statfs); 2109b8dd7b9aSAl Viro if (err) 21101da177e4SLinus Torvalds goto out_nfserr; 21111da177e4SLinus Torvalds } 21121da177e4SLinus Torvalds if ((bmval0 & (FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FSID)) && !fhp) { 21131da177e4SLinus Torvalds fh_init(&tempfh, NFS4_FHSIZE); 21141da177e4SLinus Torvalds status = fh_compose(&tempfh, exp, dentry, NULL); 21151da177e4SLinus Torvalds if (status) 21161da177e4SLinus Torvalds goto out; 21171da177e4SLinus Torvalds fhp = &tempfh; 21181da177e4SLinus Torvalds } 21191da177e4SLinus Torvalds if (bmval0 & (FATTR4_WORD0_ACL | FATTR4_WORD0_ACLSUPPORT 21201da177e4SLinus Torvalds | FATTR4_WORD0_SUPPORTED_ATTRS)) { 2121b8dd7b9aSAl Viro err = nfsd4_get_nfs4_acl(rqstp, dentry, &acl); 2122b8dd7b9aSAl Viro aclsupport = (err == 0); 21231da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_ACL) { 2124b8dd7b9aSAl Viro if (err == -EOPNOTSUPP) 21251da177e4SLinus Torvalds bmval0 &= ~FATTR4_WORD0_ACL; 2126b8dd7b9aSAl Viro else if (err == -EINVAL) { 21271da177e4SLinus Torvalds status = nfserr_attrnotsupp; 21281da177e4SLinus Torvalds goto out; 2129b8dd7b9aSAl Viro } else if (err != 0) 21301da177e4SLinus Torvalds goto out_nfserr; 21311da177e4SLinus Torvalds } 21321da177e4SLinus Torvalds } 21332b44f1baSBenny Halevy 213418032ca0SDavid Quigley #ifdef CONFIG_NFSD_V4_SECURITY_LABEL 213518032ca0SDavid Quigley if ((bmval[2] & FATTR4_WORD2_SECURITY_LABEL) || 213618032ca0SDavid Quigley bmval[0] & FATTR4_WORD0_SUPPORTED_ATTRS) { 213718032ca0SDavid Quigley err = security_inode_getsecctx(dentry->d_inode, 213818032ca0SDavid Quigley &context, &contextlen); 213918032ca0SDavid Quigley contextsupport = (err == 0); 214018032ca0SDavid Quigley if (bmval2 & FATTR4_WORD2_SECURITY_LABEL) { 214118032ca0SDavid Quigley if (err == -EOPNOTSUPP) 214218032ca0SDavid Quigley bmval2 &= ~FATTR4_WORD2_SECURITY_LABEL; 214318032ca0SDavid Quigley else if (err) 214418032ca0SDavid Quigley goto out_nfserr; 214518032ca0SDavid Quigley } 214618032ca0SDavid Quigley } 214718032ca0SDavid Quigley #endif /* CONFIG_NFSD_V4_SECURITY_LABEL */ 214818032ca0SDavid Quigley 21492b44f1baSBenny Halevy if (bmval2) { 21501da177e4SLinus Torvalds if ((buflen -= 16) < 0) 21511da177e4SLinus Torvalds goto out_resource; 21527e705706SAndy Adamson WRITE32(3); 21537e705706SAndy Adamson WRITE32(bmval0); 21547e705706SAndy Adamson WRITE32(bmval1); 21557e705706SAndy Adamson WRITE32(bmval2); 21562b44f1baSBenny Halevy } else if (bmval1) { 21572b44f1baSBenny Halevy if ((buflen -= 12) < 0) 21582b44f1baSBenny Halevy goto out_resource; 21591da177e4SLinus Torvalds WRITE32(2); 21601da177e4SLinus Torvalds WRITE32(bmval0); 21611da177e4SLinus Torvalds WRITE32(bmval1); 21627e705706SAndy Adamson } else { 21632b44f1baSBenny Halevy if ((buflen -= 8) < 0) 21642b44f1baSBenny Halevy goto out_resource; 21657e705706SAndy Adamson WRITE32(1); 21667e705706SAndy Adamson WRITE32(bmval0); 21677e705706SAndy Adamson } 21681da177e4SLinus Torvalds attrlenp = p++; /* to be backfilled later */ 21691da177e4SLinus Torvalds 21701da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) { 21717e705706SAndy Adamson u32 word0 = nfsd_suppattrs0(minorversion); 21727e705706SAndy Adamson u32 word1 = nfsd_suppattrs1(minorversion); 21737e705706SAndy Adamson u32 word2 = nfsd_suppattrs2(minorversion); 21747e705706SAndy Adamson 217542ca0993SJ.Bruce Fields if (!aclsupport) 217642ca0993SJ.Bruce Fields word0 &= ~FATTR4_WORD0_ACL; 217718032ca0SDavid Quigley if (!contextsupport) 217818032ca0SDavid Quigley word2 &= ~FATTR4_WORD2_SECURITY_LABEL; 21797e705706SAndy Adamson if (!word2) { 21802b44f1baSBenny Halevy if ((buflen -= 12) < 0) 21812b44f1baSBenny Halevy goto out_resource; 21821da177e4SLinus Torvalds WRITE32(2); 218342ca0993SJ.Bruce Fields WRITE32(word0); 21847e705706SAndy Adamson WRITE32(word1); 21857e705706SAndy Adamson } else { 21862b44f1baSBenny Halevy if ((buflen -= 16) < 0) 21872b44f1baSBenny Halevy goto out_resource; 21887e705706SAndy Adamson WRITE32(3); 21897e705706SAndy Adamson WRITE32(word0); 21907e705706SAndy Adamson WRITE32(word1); 21917e705706SAndy Adamson WRITE32(word2); 21927e705706SAndy Adamson } 21931da177e4SLinus Torvalds } 21941da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_TYPE) { 21951da177e4SLinus Torvalds if ((buflen -= 4) < 0) 21961da177e4SLinus Torvalds goto out_resource; 21973d2544b1SJ. Bruce Fields dummy = nfs4_file_type(stat.mode); 21981da177e4SLinus Torvalds if (dummy == NF4BAD) 21991da177e4SLinus Torvalds goto out_serverfault; 22001da177e4SLinus Torvalds WRITE32(dummy); 22011da177e4SLinus Torvalds } 22021da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_FH_EXPIRE_TYPE) { 22031da177e4SLinus Torvalds if ((buflen -= 4) < 0) 22041da177e4SLinus Torvalds goto out_resource; 220549640001SNeilBrown if (exp->ex_flags & NFSEXP_NOSUBTREECHECK) 2206e34ac862SNeilBrown WRITE32(NFS4_FH_PERSISTENT); 220749640001SNeilBrown else 2208e34ac862SNeilBrown WRITE32(NFS4_FH_PERSISTENT|NFS4_FH_VOL_RENAME); 22091da177e4SLinus Torvalds } 22101da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_CHANGE) { 22111da177e4SLinus Torvalds if ((buflen -= 8) < 0) 22121da177e4SLinus Torvalds goto out_resource; 2213c654b8a9SJ. Bruce Fields write_change(&p, &stat, dentry->d_inode); 22141da177e4SLinus Torvalds } 22151da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_SIZE) { 22161da177e4SLinus Torvalds if ((buflen -= 8) < 0) 22171da177e4SLinus Torvalds goto out_resource; 22181da177e4SLinus Torvalds WRITE64(stat.size); 22191da177e4SLinus Torvalds } 22201da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_LINK_SUPPORT) { 22211da177e4SLinus Torvalds if ((buflen -= 4) < 0) 22221da177e4SLinus Torvalds goto out_resource; 22231da177e4SLinus Torvalds WRITE32(1); 22241da177e4SLinus Torvalds } 22251da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_SYMLINK_SUPPORT) { 22261da177e4SLinus Torvalds if ((buflen -= 4) < 0) 22271da177e4SLinus Torvalds goto out_resource; 22281da177e4SLinus Torvalds WRITE32(1); 22291da177e4SLinus Torvalds } 22301da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_NAMED_ATTR) { 22311da177e4SLinus Torvalds if ((buflen -= 4) < 0) 22321da177e4SLinus Torvalds goto out_resource; 22331da177e4SLinus Torvalds WRITE32(0); 22341da177e4SLinus Torvalds } 22351da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_FSID) { 22361da177e4SLinus Torvalds if ((buflen -= 16) < 0) 22371da177e4SLinus Torvalds goto out_resource; 223842ca0993SJ.Bruce Fields if (exp->ex_fslocs.migrated) { 223942ca0993SJ.Bruce Fields WRITE64(NFS4_REFERRAL_FSID_MAJOR); 224042ca0993SJ.Bruce Fields WRITE64(NFS4_REFERRAL_FSID_MINOR); 2241af6a4e28SNeilBrown } else switch(fsid_source(fhp)) { 2242af6a4e28SNeilBrown case FSIDSOURCE_FSID: 22431da177e4SLinus Torvalds WRITE64((u64)exp->ex_fsid); 22441da177e4SLinus Torvalds WRITE64((u64)0); 2245af6a4e28SNeilBrown break; 2246af6a4e28SNeilBrown case FSIDSOURCE_DEV: 22471da177e4SLinus Torvalds WRITE32(0); 22481da177e4SLinus Torvalds WRITE32(MAJOR(stat.dev)); 22491da177e4SLinus Torvalds WRITE32(0); 22501da177e4SLinus Torvalds WRITE32(MINOR(stat.dev)); 2251af6a4e28SNeilBrown break; 2252af6a4e28SNeilBrown case FSIDSOURCE_UUID: 2253af6a4e28SNeilBrown WRITEMEM(exp->ex_uuid, 16); 2254af6a4e28SNeilBrown break; 22551da177e4SLinus Torvalds } 22561da177e4SLinus Torvalds } 22571da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_UNIQUE_HANDLES) { 22581da177e4SLinus Torvalds if ((buflen -= 4) < 0) 22591da177e4SLinus Torvalds goto out_resource; 22601da177e4SLinus Torvalds WRITE32(0); 22611da177e4SLinus Torvalds } 22621da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_LEASE_TIME) { 22631da177e4SLinus Torvalds if ((buflen -= 4) < 0) 22641da177e4SLinus Torvalds goto out_resource; 22653d733711SStanislav Kinsbursky WRITE32(nn->nfsd4_lease); 22661da177e4SLinus Torvalds } 22671da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_RDATTR_ERROR) { 22681da177e4SLinus Torvalds if ((buflen -= 4) < 0) 22691da177e4SLinus Torvalds goto out_resource; 227042ca0993SJ.Bruce Fields WRITE32(rdattr_err); 22711da177e4SLinus Torvalds } 22721da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_ACL) { 22731da177e4SLinus Torvalds struct nfs4_ace *ace; 22741da177e4SLinus Torvalds 22751da177e4SLinus Torvalds if (acl == NULL) { 22761da177e4SLinus Torvalds if ((buflen -= 4) < 0) 22771da177e4SLinus Torvalds goto out_resource; 22781da177e4SLinus Torvalds 22791da177e4SLinus Torvalds WRITE32(0); 22801da177e4SLinus Torvalds goto out_acl; 22811da177e4SLinus Torvalds } 22821da177e4SLinus Torvalds if ((buflen -= 4) < 0) 22831da177e4SLinus Torvalds goto out_resource; 22841da177e4SLinus Torvalds WRITE32(acl->naces); 22851da177e4SLinus Torvalds 228628e05dd8SJ. Bruce Fields for (ace = acl->aces; ace < acl->aces + acl->naces; ace++) { 22871da177e4SLinus Torvalds if ((buflen -= 4*3) < 0) 22881da177e4SLinus Torvalds goto out_resource; 22891da177e4SLinus Torvalds WRITE32(ace->type); 22901da177e4SLinus Torvalds WRITE32(ace->flag); 22911da177e4SLinus Torvalds WRITE32(ace->access_mask & NFS4_ACE_MASK_ALL); 2292ab8e4aeeSEric W. Biederman status = nfsd4_encode_aclname(rqstp, ace, &p, &buflen); 22931da177e4SLinus Torvalds if (status == nfserr_resource) 22941da177e4SLinus Torvalds goto out_resource; 22951da177e4SLinus Torvalds if (status) 22961da177e4SLinus Torvalds goto out; 22971da177e4SLinus Torvalds } 22981da177e4SLinus Torvalds } 22991da177e4SLinus Torvalds out_acl: 23001da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_ACLSUPPORT) { 23011da177e4SLinus Torvalds if ((buflen -= 4) < 0) 23021da177e4SLinus Torvalds goto out_resource; 23031da177e4SLinus Torvalds WRITE32(aclsupport ? 23041da177e4SLinus Torvalds ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL : 0); 23051da177e4SLinus Torvalds } 23061da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_CANSETTIME) { 23071da177e4SLinus Torvalds if ((buflen -= 4) < 0) 23081da177e4SLinus Torvalds goto out_resource; 23091da177e4SLinus Torvalds WRITE32(1); 23101da177e4SLinus Torvalds } 23111da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_CASE_INSENSITIVE) { 23121da177e4SLinus Torvalds if ((buflen -= 4) < 0) 23131da177e4SLinus Torvalds goto out_resource; 23142930d381SJ. Bruce Fields WRITE32(0); 23151da177e4SLinus Torvalds } 23161da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_CASE_PRESERVING) { 23171da177e4SLinus Torvalds if ((buflen -= 4) < 0) 23181da177e4SLinus Torvalds goto out_resource; 23191da177e4SLinus Torvalds WRITE32(1); 23201da177e4SLinus Torvalds } 23211da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_CHOWN_RESTRICTED) { 23221da177e4SLinus Torvalds if ((buflen -= 4) < 0) 23231da177e4SLinus Torvalds goto out_resource; 23241da177e4SLinus Torvalds WRITE32(1); 23251da177e4SLinus Torvalds } 23261da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_FILEHANDLE) { 23271da177e4SLinus Torvalds buflen -= (XDR_QUADLEN(fhp->fh_handle.fh_size) << 2) + 4; 23281da177e4SLinus Torvalds if (buflen < 0) 23291da177e4SLinus Torvalds goto out_resource; 23301da177e4SLinus Torvalds WRITE32(fhp->fh_handle.fh_size); 23311da177e4SLinus Torvalds WRITEMEM(&fhp->fh_handle.fh_base, fhp->fh_handle.fh_size); 23321da177e4SLinus Torvalds } 23331da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_FILEID) { 23341da177e4SLinus Torvalds if ((buflen -= 8) < 0) 23351da177e4SLinus Torvalds goto out_resource; 233640ee5dc6SPeter Staubach WRITE64(stat.ino); 23371da177e4SLinus Torvalds } 23381da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_FILES_AVAIL) { 23391da177e4SLinus Torvalds if ((buflen -= 8) < 0) 23401da177e4SLinus Torvalds goto out_resource; 23411da177e4SLinus Torvalds WRITE64((u64) statfs.f_ffree); 23421da177e4SLinus Torvalds } 23431da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_FILES_FREE) { 23441da177e4SLinus Torvalds if ((buflen -= 8) < 0) 23451da177e4SLinus Torvalds goto out_resource; 23461da177e4SLinus Torvalds WRITE64((u64) statfs.f_ffree); 23471da177e4SLinus Torvalds } 23481da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_FILES_TOTAL) { 23491da177e4SLinus Torvalds if ((buflen -= 8) < 0) 23501da177e4SLinus Torvalds goto out_resource; 23511da177e4SLinus Torvalds WRITE64((u64) statfs.f_files); 23521da177e4SLinus Torvalds } 235381c3f413SJ.Bruce Fields if (bmval0 & FATTR4_WORD0_FS_LOCATIONS) { 235481c3f413SJ.Bruce Fields status = nfsd4_encode_fs_locations(rqstp, exp, &p, &buflen); 235581c3f413SJ.Bruce Fields if (status == nfserr_resource) 235681c3f413SJ.Bruce Fields goto out_resource; 235781c3f413SJ.Bruce Fields if (status) 235881c3f413SJ.Bruce Fields goto out; 235981c3f413SJ.Bruce Fields } 23601da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_HOMOGENEOUS) { 23611da177e4SLinus Torvalds if ((buflen -= 4) < 0) 23621da177e4SLinus Torvalds goto out_resource; 23631da177e4SLinus Torvalds WRITE32(1); 23641da177e4SLinus Torvalds } 23651da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_MAXFILESIZE) { 23661da177e4SLinus Torvalds if ((buflen -= 8) < 0) 23671da177e4SLinus Torvalds goto out_resource; 23681da177e4SLinus Torvalds WRITE64(~(u64)0); 23691da177e4SLinus Torvalds } 23701da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_MAXLINK) { 23711da177e4SLinus Torvalds if ((buflen -= 4) < 0) 23721da177e4SLinus Torvalds goto out_resource; 23731da177e4SLinus Torvalds WRITE32(255); 23741da177e4SLinus Torvalds } 23751da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_MAXNAME) { 23761da177e4SLinus Torvalds if ((buflen -= 4) < 0) 23771da177e4SLinus Torvalds goto out_resource; 2378a16e92edSJ. Bruce Fields WRITE32(statfs.f_namelen); 23791da177e4SLinus Torvalds } 23801da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_MAXREAD) { 23811da177e4SLinus Torvalds if ((buflen -= 8) < 0) 23821da177e4SLinus Torvalds goto out_resource; 23837adae489SGreg Banks WRITE64((u64) svc_max_payload(rqstp)); 23841da177e4SLinus Torvalds } 23851da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_MAXWRITE) { 23861da177e4SLinus Torvalds if ((buflen -= 8) < 0) 23871da177e4SLinus Torvalds goto out_resource; 23887adae489SGreg Banks WRITE64((u64) svc_max_payload(rqstp)); 23891da177e4SLinus Torvalds } 23901da177e4SLinus Torvalds if (bmval1 & FATTR4_WORD1_MODE) { 23911da177e4SLinus Torvalds if ((buflen -= 4) < 0) 23921da177e4SLinus Torvalds goto out_resource; 23931da177e4SLinus Torvalds WRITE32(stat.mode & S_IALLUGO); 23941da177e4SLinus Torvalds } 23951da177e4SLinus Torvalds if (bmval1 & FATTR4_WORD1_NO_TRUNC) { 23961da177e4SLinus Torvalds if ((buflen -= 4) < 0) 23971da177e4SLinus Torvalds goto out_resource; 23981da177e4SLinus Torvalds WRITE32(1); 23991da177e4SLinus Torvalds } 24001da177e4SLinus Torvalds if (bmval1 & FATTR4_WORD1_NUMLINKS) { 24011da177e4SLinus Torvalds if ((buflen -= 4) < 0) 24021da177e4SLinus Torvalds goto out_resource; 24031da177e4SLinus Torvalds WRITE32(stat.nlink); 24041da177e4SLinus Torvalds } 24051da177e4SLinus Torvalds if (bmval1 & FATTR4_WORD1_OWNER) { 24061da177e4SLinus Torvalds status = nfsd4_encode_user(rqstp, stat.uid, &p, &buflen); 24071da177e4SLinus Torvalds if (status == nfserr_resource) 24081da177e4SLinus Torvalds goto out_resource; 24091da177e4SLinus Torvalds if (status) 24101da177e4SLinus Torvalds goto out; 24111da177e4SLinus Torvalds } 24121da177e4SLinus Torvalds if (bmval1 & FATTR4_WORD1_OWNER_GROUP) { 24131da177e4SLinus Torvalds status = nfsd4_encode_group(rqstp, stat.gid, &p, &buflen); 24141da177e4SLinus Torvalds if (status == nfserr_resource) 24151da177e4SLinus Torvalds goto out_resource; 24161da177e4SLinus Torvalds if (status) 24171da177e4SLinus Torvalds goto out; 24181da177e4SLinus Torvalds } 24191da177e4SLinus Torvalds if (bmval1 & FATTR4_WORD1_RAWDEV) { 24201da177e4SLinus Torvalds if ((buflen -= 8) < 0) 24211da177e4SLinus Torvalds goto out_resource; 24221da177e4SLinus Torvalds WRITE32((u32) MAJOR(stat.rdev)); 24231da177e4SLinus Torvalds WRITE32((u32) MINOR(stat.rdev)); 24241da177e4SLinus Torvalds } 24251da177e4SLinus Torvalds if (bmval1 & FATTR4_WORD1_SPACE_AVAIL) { 24261da177e4SLinus Torvalds if ((buflen -= 8) < 0) 24271da177e4SLinus Torvalds goto out_resource; 24281da177e4SLinus Torvalds dummy64 = (u64)statfs.f_bavail * (u64)statfs.f_bsize; 24291da177e4SLinus Torvalds WRITE64(dummy64); 24301da177e4SLinus Torvalds } 24311da177e4SLinus Torvalds if (bmval1 & FATTR4_WORD1_SPACE_FREE) { 24321da177e4SLinus Torvalds if ((buflen -= 8) < 0) 24331da177e4SLinus Torvalds goto out_resource; 24341da177e4SLinus Torvalds dummy64 = (u64)statfs.f_bfree * (u64)statfs.f_bsize; 24351da177e4SLinus Torvalds WRITE64(dummy64); 24361da177e4SLinus Torvalds } 24371da177e4SLinus Torvalds if (bmval1 & FATTR4_WORD1_SPACE_TOTAL) { 24381da177e4SLinus Torvalds if ((buflen -= 8) < 0) 24391da177e4SLinus Torvalds goto out_resource; 24401da177e4SLinus Torvalds dummy64 = (u64)statfs.f_blocks * (u64)statfs.f_bsize; 24411da177e4SLinus Torvalds WRITE64(dummy64); 24421da177e4SLinus Torvalds } 24431da177e4SLinus Torvalds if (bmval1 & FATTR4_WORD1_SPACE_USED) { 24441da177e4SLinus Torvalds if ((buflen -= 8) < 0) 24451da177e4SLinus Torvalds goto out_resource; 24461da177e4SLinus Torvalds dummy64 = (u64)stat.blocks << 9; 24471da177e4SLinus Torvalds WRITE64(dummy64); 24481da177e4SLinus Torvalds } 24491da177e4SLinus Torvalds if (bmval1 & FATTR4_WORD1_TIME_ACCESS) { 24501da177e4SLinus Torvalds if ((buflen -= 12) < 0) 24511da177e4SLinus Torvalds goto out_resource; 2452bf8d9097SBryan Schumaker WRITE64((s64)stat.atime.tv_sec); 24531da177e4SLinus Torvalds WRITE32(stat.atime.tv_nsec); 24541da177e4SLinus Torvalds } 24551da177e4SLinus Torvalds if (bmval1 & FATTR4_WORD1_TIME_DELTA) { 24561da177e4SLinus Torvalds if ((buflen -= 12) < 0) 24571da177e4SLinus Torvalds goto out_resource; 24581da177e4SLinus Torvalds WRITE32(0); 24591da177e4SLinus Torvalds WRITE32(1); 24601da177e4SLinus Torvalds WRITE32(0); 24611da177e4SLinus Torvalds } 24621da177e4SLinus Torvalds if (bmval1 & FATTR4_WORD1_TIME_METADATA) { 24631da177e4SLinus Torvalds if ((buflen -= 12) < 0) 24641da177e4SLinus Torvalds goto out_resource; 2465bf8d9097SBryan Schumaker WRITE64((s64)stat.ctime.tv_sec); 24661da177e4SLinus Torvalds WRITE32(stat.ctime.tv_nsec); 24671da177e4SLinus Torvalds } 24681da177e4SLinus Torvalds if (bmval1 & FATTR4_WORD1_TIME_MODIFY) { 24691da177e4SLinus Torvalds if ((buflen -= 12) < 0) 24701da177e4SLinus Torvalds goto out_resource; 2471bf8d9097SBryan Schumaker WRITE64((s64)stat.mtime.tv_sec); 24721da177e4SLinus Torvalds WRITE32(stat.mtime.tv_nsec); 24731da177e4SLinus Torvalds } 24741da177e4SLinus Torvalds if (bmval1 & FATTR4_WORD1_MOUNTED_ON_FILEID) { 24751da177e4SLinus Torvalds if ((buflen -= 8) < 0) 24761da177e4SLinus Torvalds goto out_resource; 2477406a7ea9SFrank Filz /* 2478406a7ea9SFrank Filz * Get parent's attributes if not ignoring crossmount 2479406a7ea9SFrank Filz * and this is the root of a cross-mounted filesystem. 2480406a7ea9SFrank Filz */ 2481406a7ea9SFrank Filz if (ignore_crossmnt == 0 && 2482ae7095a7SJ. Bruce Fields dentry == exp->ex_path.mnt->mnt_root) 2483ae7095a7SJ. Bruce Fields get_parent_attributes(exp, &stat); 248440ee5dc6SPeter Staubach WRITE64(stat.ino); 24851da177e4SLinus Torvalds } 248618032ca0SDavid Quigley if (bmval2 & FATTR4_WORD2_SECURITY_LABEL) { 248718032ca0SDavid Quigley status = nfsd4_encode_security_label(rqstp, context, 248818032ca0SDavid Quigley contextlen, &p, &buflen); 248918032ca0SDavid Quigley if (status) 249018032ca0SDavid Quigley goto out; 249118032ca0SDavid Quigley } 24928c18f205SBenny Halevy if (bmval2 & FATTR4_WORD2_SUPPATTR_EXCLCREAT) { 24938c18f205SBenny Halevy WRITE32(3); 24948c18f205SBenny Halevy WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD0); 24958c18f205SBenny Halevy WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD1); 24968c18f205SBenny Halevy WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD2); 24978c18f205SBenny Halevy } 24987e705706SAndy Adamson 24991da177e4SLinus Torvalds *attrlenp = htonl((char *)p - (char *)attrlenp - 4); 250084822d0bSJ. Bruce Fields *buffer = p; 25011da177e4SLinus Torvalds status = nfs_ok; 25021da177e4SLinus Torvalds 25031da177e4SLinus Torvalds out: 2504ba4e55bbSJ. Bruce Fields #ifdef CONFIG_NFSD_V4_SECURITY_LABEL 250518032ca0SDavid Quigley if (context) 250618032ca0SDavid Quigley security_release_secctx(context, contextlen); 2507ba4e55bbSJ. Bruce Fields #endif /* CONFIG_NFSD_V4_SECURITY_LABEL */ 250828e05dd8SJ. Bruce Fields kfree(acl); 25091da177e4SLinus Torvalds if (fhp == &tempfh) 25101da177e4SLinus Torvalds fh_put(&tempfh); 25111da177e4SLinus Torvalds return status; 25121da177e4SLinus Torvalds out_nfserr: 2513b8dd7b9aSAl Viro status = nfserrno(err); 25141da177e4SLinus Torvalds goto out; 25151da177e4SLinus Torvalds out_resource: 25161da177e4SLinus Torvalds status = nfserr_resource; 25171da177e4SLinus Torvalds goto out; 25181da177e4SLinus Torvalds out_serverfault: 25191da177e4SLinus Torvalds status = nfserr_serverfault; 25201da177e4SLinus Torvalds goto out; 25211da177e4SLinus Torvalds } 25221da177e4SLinus Torvalds 2523c0ce6ec8SJ. Bruce Fields static inline int attributes_need_mount(u32 *bmval) 2524c0ce6ec8SJ. Bruce Fields { 2525c0ce6ec8SJ. Bruce Fields if (bmval[0] & ~(FATTR4_WORD0_RDATTR_ERROR | FATTR4_WORD0_LEASE_TIME)) 2526c0ce6ec8SJ. Bruce Fields return 1; 2527c0ce6ec8SJ. Bruce Fields if (bmval[1] & ~FATTR4_WORD1_MOUNTED_ON_FILEID) 2528c0ce6ec8SJ. Bruce Fields return 1; 2529c0ce6ec8SJ. Bruce Fields return 0; 2530c0ce6ec8SJ. Bruce Fields } 2531c0ce6ec8SJ. Bruce Fields 2532b37ad28bSAl Viro static __be32 25331da177e4SLinus Torvalds nfsd4_encode_dirent_fattr(struct nfsd4_readdir *cd, 253484822d0bSJ. Bruce Fields const char *name, int namlen, __be32 **p, int buflen) 25351da177e4SLinus Torvalds { 25361da177e4SLinus Torvalds struct svc_export *exp = cd->rd_fhp->fh_export; 25371da177e4SLinus Torvalds struct dentry *dentry; 2538b37ad28bSAl Viro __be32 nfserr; 2539406a7ea9SFrank Filz int ignore_crossmnt = 0; 25401da177e4SLinus Torvalds 25411da177e4SLinus Torvalds dentry = lookup_one_len(name, cd->rd_fhp->fh_dentry, namlen); 25421da177e4SLinus Torvalds if (IS_ERR(dentry)) 25431da177e4SLinus Torvalds return nfserrno(PTR_ERR(dentry)); 2544b2c0cea6SJ. Bruce Fields if (!dentry->d_inode) { 2545b2c0cea6SJ. Bruce Fields /* 2546b2c0cea6SJ. Bruce Fields * nfsd_buffered_readdir drops the i_mutex between 2547b2c0cea6SJ. Bruce Fields * readdir and calling this callback, leaving a window 2548b2c0cea6SJ. Bruce Fields * where this directory entry could have gone away. 2549b2c0cea6SJ. Bruce Fields */ 2550b2c0cea6SJ. Bruce Fields dput(dentry); 2551b2c0cea6SJ. Bruce Fields return nfserr_noent; 2552b2c0cea6SJ. Bruce Fields } 25531da177e4SLinus Torvalds 25541da177e4SLinus Torvalds exp_get(exp); 2555406a7ea9SFrank Filz /* 2556406a7ea9SFrank Filz * In the case of a mountpoint, the client may be asking for 2557406a7ea9SFrank Filz * attributes that are only properties of the underlying filesystem 2558406a7ea9SFrank Filz * as opposed to the cross-mounted file system. In such a case, 2559406a7ea9SFrank Filz * we will not follow the cross mount and will fill the attribtutes 2560406a7ea9SFrank Filz * directly from the mountpoint dentry. 2561406a7ea9SFrank Filz */ 25623227fa41SJ. Bruce Fields if (nfsd_mountpoint(dentry, exp)) { 2563021d3a72SJ.Bruce Fields int err; 2564021d3a72SJ.Bruce Fields 25653227fa41SJ. Bruce Fields if (!(exp->ex_flags & NFSEXP_V4ROOT) 25663227fa41SJ. Bruce Fields && !attributes_need_mount(cd->rd_bmval)) { 25673227fa41SJ. Bruce Fields ignore_crossmnt = 1; 25683227fa41SJ. Bruce Fields goto out_encode; 25693227fa41SJ. Bruce Fields } 2570dcb488a3SAndy Adamson /* 2571dcb488a3SAndy Adamson * Why the heck aren't we just using nfsd_lookup?? 2572dcb488a3SAndy Adamson * Different "."/".." handling? Something else? 2573dcb488a3SAndy Adamson * At least, add a comment here to explain.... 2574dcb488a3SAndy Adamson */ 2575021d3a72SJ.Bruce Fields err = nfsd_cross_mnt(cd->rd_rqstp, &dentry, &exp); 2576021d3a72SJ.Bruce Fields if (err) { 2577021d3a72SJ.Bruce Fields nfserr = nfserrno(err); 25781da177e4SLinus Torvalds goto out_put; 25791da177e4SLinus Torvalds } 2580dcb488a3SAndy Adamson nfserr = check_nfsd_access(exp, cd->rd_rqstp); 2581dcb488a3SAndy Adamson if (nfserr) 2582dcb488a3SAndy Adamson goto out_put; 25831da177e4SLinus Torvalds 25841da177e4SLinus Torvalds } 25853227fa41SJ. Bruce Fields out_encode: 25861da177e4SLinus Torvalds nfserr = nfsd4_encode_fattr(NULL, exp, dentry, p, buflen, cd->rd_bmval, 2587406a7ea9SFrank Filz cd->rd_rqstp, ignore_crossmnt); 25881da177e4SLinus Torvalds out_put: 25891da177e4SLinus Torvalds dput(dentry); 25901da177e4SLinus Torvalds exp_put(exp); 25911da177e4SLinus Torvalds return nfserr; 25921da177e4SLinus Torvalds } 25931da177e4SLinus Torvalds 25942ebbc012SAl Viro static __be32 * 2595b37ad28bSAl Viro nfsd4_encode_rdattr_error(__be32 *p, int buflen, __be32 nfserr) 25961da177e4SLinus Torvalds { 25972ebbc012SAl Viro __be32 *attrlenp; 25981da177e4SLinus Torvalds 25991da177e4SLinus Torvalds if (buflen < 6) 26001da177e4SLinus Torvalds return NULL; 26011da177e4SLinus Torvalds *p++ = htonl(2); 26021da177e4SLinus Torvalds *p++ = htonl(FATTR4_WORD0_RDATTR_ERROR); /* bmval0 */ 26031da177e4SLinus Torvalds *p++ = htonl(0); /* bmval1 */ 26041da177e4SLinus Torvalds 26051da177e4SLinus Torvalds attrlenp = p++; 26061da177e4SLinus Torvalds *p++ = nfserr; /* no htonl */ 26071da177e4SLinus Torvalds *attrlenp = htonl((char *)p - (char *)attrlenp - 4); 26081da177e4SLinus Torvalds return p; 26091da177e4SLinus Torvalds } 26101da177e4SLinus Torvalds 26111da177e4SLinus Torvalds static int 2612a0ad13efSNeilBrown nfsd4_encode_dirent(void *ccdv, const char *name, int namlen, 2613a0ad13efSNeilBrown loff_t offset, u64 ino, unsigned int d_type) 26141da177e4SLinus Torvalds { 2615a0ad13efSNeilBrown struct readdir_cd *ccd = ccdv; 26161da177e4SLinus Torvalds struct nfsd4_readdir *cd = container_of(ccd, struct nfsd4_readdir, common); 26171da177e4SLinus Torvalds int buflen; 26182ebbc012SAl Viro __be32 *p = cd->buffer; 2619b2c0cea6SJ. Bruce Fields __be32 *cookiep; 2620b37ad28bSAl Viro __be32 nfserr = nfserr_toosmall; 26211da177e4SLinus Torvalds 26221da177e4SLinus Torvalds /* In nfsv4, "." and ".." never make it onto the wire.. */ 26231da177e4SLinus Torvalds if (name && isdotent(name, namlen)) { 26241da177e4SLinus Torvalds cd->common.err = nfs_ok; 26251da177e4SLinus Torvalds return 0; 26261da177e4SLinus Torvalds } 26271da177e4SLinus Torvalds 26281da177e4SLinus Torvalds if (cd->offset) 26291da177e4SLinus Torvalds xdr_encode_hyper(cd->offset, (u64) offset); 26301da177e4SLinus Torvalds 26311da177e4SLinus Torvalds buflen = cd->buflen - 4 - XDR_QUADLEN(namlen); 26321da177e4SLinus Torvalds if (buflen < 0) 26331da177e4SLinus Torvalds goto fail; 26341da177e4SLinus Torvalds 26351da177e4SLinus Torvalds *p++ = xdr_one; /* mark entry present */ 2636b2c0cea6SJ. Bruce Fields cookiep = p; 26371da177e4SLinus Torvalds p = xdr_encode_hyper(p, NFS_OFFSET_MAX); /* offset of next entry */ 26381da177e4SLinus Torvalds p = xdr_encode_array(p, name, namlen); /* name length & name */ 26391da177e4SLinus Torvalds 264084822d0bSJ. Bruce Fields nfserr = nfsd4_encode_dirent_fattr(cd, name, namlen, &p, buflen); 26411da177e4SLinus Torvalds switch (nfserr) { 26421da177e4SLinus Torvalds case nfs_ok: 26431da177e4SLinus Torvalds break; 26441da177e4SLinus Torvalds case nfserr_resource: 26451da177e4SLinus Torvalds nfserr = nfserr_toosmall; 26461da177e4SLinus Torvalds goto fail; 2647b2c0cea6SJ. Bruce Fields case nfserr_noent: 2648b2c0cea6SJ. Bruce Fields goto skip_entry; 26491da177e4SLinus Torvalds default: 26501da177e4SLinus Torvalds /* 26511da177e4SLinus Torvalds * If the client requested the RDATTR_ERROR attribute, 26521da177e4SLinus Torvalds * we stuff the error code into this attribute 26531da177e4SLinus Torvalds * and continue. If this attribute was not requested, 26541da177e4SLinus Torvalds * then in accordance with the spec, we fail the 26551da177e4SLinus Torvalds * entire READDIR operation(!) 26561da177e4SLinus Torvalds */ 26571da177e4SLinus Torvalds if (!(cd->rd_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)) 26581da177e4SLinus Torvalds goto fail; 26591da177e4SLinus Torvalds p = nfsd4_encode_rdattr_error(p, buflen, nfserr); 266034081efcSFred Isaman if (p == NULL) { 266134081efcSFred Isaman nfserr = nfserr_toosmall; 26621da177e4SLinus Torvalds goto fail; 26631da177e4SLinus Torvalds } 266434081efcSFred Isaman } 26651da177e4SLinus Torvalds cd->buflen -= (p - cd->buffer); 26661da177e4SLinus Torvalds cd->buffer = p; 2667b2c0cea6SJ. Bruce Fields cd->offset = cookiep; 2668b2c0cea6SJ. Bruce Fields skip_entry: 26691da177e4SLinus Torvalds cd->common.err = nfs_ok; 26701da177e4SLinus Torvalds return 0; 26711da177e4SLinus Torvalds fail: 26721da177e4SLinus Torvalds cd->common.err = nfserr; 26731da177e4SLinus Torvalds return -EINVAL; 26741da177e4SLinus Torvalds } 26751da177e4SLinus Torvalds 2676e2f282b9SBenny Halevy static void 2677e2f282b9SBenny Halevy nfsd4_encode_stateid(struct nfsd4_compoundres *resp, stateid_t *sid) 2678e2f282b9SBenny Halevy { 2679bc749ca4SJ. Bruce Fields __be32 *p; 2680e2f282b9SBenny Halevy 2681e2f282b9SBenny Halevy RESERVE_SPACE(sizeof(stateid_t)); 2682e2f282b9SBenny Halevy WRITE32(sid->si_generation); 2683e2f282b9SBenny Halevy WRITEMEM(&sid->si_opaque, sizeof(stateid_opaque_t)); 2684e2f282b9SBenny Halevy ADJUST_ARGS(); 2685e2f282b9SBenny Halevy } 2686e2f282b9SBenny Halevy 2687695e12f8SBenny Halevy static __be32 2688b37ad28bSAl Viro nfsd4_encode_access(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_access *access) 26891da177e4SLinus Torvalds { 2690bc749ca4SJ. Bruce Fields __be32 *p; 26911da177e4SLinus Torvalds 26921da177e4SLinus Torvalds if (!nfserr) { 26931da177e4SLinus Torvalds RESERVE_SPACE(8); 26941da177e4SLinus Torvalds WRITE32(access->ac_supported); 26951da177e4SLinus Torvalds WRITE32(access->ac_resp_access); 26961da177e4SLinus Torvalds ADJUST_ARGS(); 26971da177e4SLinus Torvalds } 2698695e12f8SBenny Halevy return nfserr; 26991da177e4SLinus Torvalds } 27001da177e4SLinus Torvalds 27011d1bc8f2SJ. Bruce Fields static __be32 nfsd4_encode_bind_conn_to_session(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_bind_conn_to_session *bcts) 27021d1bc8f2SJ. Bruce Fields { 27031d1bc8f2SJ. Bruce Fields __be32 *p; 27041d1bc8f2SJ. Bruce Fields 27051d1bc8f2SJ. Bruce Fields if (!nfserr) { 27061d1bc8f2SJ. Bruce Fields RESERVE_SPACE(NFS4_MAX_SESSIONID_LEN + 8); 27071d1bc8f2SJ. Bruce Fields WRITEMEM(bcts->sessionid.data, NFS4_MAX_SESSIONID_LEN); 27081d1bc8f2SJ. Bruce Fields WRITE32(bcts->dir); 27096e67b5d1SJ. Bruce Fields /* Sorry, we do not yet support RDMA over 4.1: */ 27101d1bc8f2SJ. Bruce Fields WRITE32(0); 27111d1bc8f2SJ. Bruce Fields ADJUST_ARGS(); 27121d1bc8f2SJ. Bruce Fields } 27131d1bc8f2SJ. Bruce Fields return nfserr; 27141d1bc8f2SJ. Bruce Fields } 27151d1bc8f2SJ. Bruce Fields 2716695e12f8SBenny Halevy static __be32 2717b37ad28bSAl Viro nfsd4_encode_close(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_close *close) 27181da177e4SLinus Torvalds { 2719e2f282b9SBenny Halevy if (!nfserr) 2720e2f282b9SBenny Halevy nfsd4_encode_stateid(resp, &close->cl_stateid); 2721e2f282b9SBenny Halevy 2722695e12f8SBenny Halevy return nfserr; 27231da177e4SLinus Torvalds } 27241da177e4SLinus Torvalds 27251da177e4SLinus Torvalds 2726695e12f8SBenny Halevy static __be32 2727b37ad28bSAl Viro nfsd4_encode_commit(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_commit *commit) 27281da177e4SLinus Torvalds { 2729bc749ca4SJ. Bruce Fields __be32 *p; 27301da177e4SLinus Torvalds 27311da177e4SLinus Torvalds if (!nfserr) { 2732ab4684d1SChuck Lever RESERVE_SPACE(NFS4_VERIFIER_SIZE); 2733ab4684d1SChuck Lever WRITEMEM(commit->co_verf.data, NFS4_VERIFIER_SIZE); 27341da177e4SLinus Torvalds ADJUST_ARGS(); 27351da177e4SLinus Torvalds } 2736695e12f8SBenny Halevy return nfserr; 27371da177e4SLinus Torvalds } 27381da177e4SLinus Torvalds 2739695e12f8SBenny Halevy static __be32 2740b37ad28bSAl Viro nfsd4_encode_create(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_create *create) 27411da177e4SLinus Torvalds { 2742bc749ca4SJ. Bruce Fields __be32 *p; 27431da177e4SLinus Torvalds 27441da177e4SLinus Torvalds if (!nfserr) { 27451da177e4SLinus Torvalds RESERVE_SPACE(32); 2746c654b8a9SJ. Bruce Fields write_cinfo(&p, &create->cr_cinfo); 27471da177e4SLinus Torvalds WRITE32(2); 27481da177e4SLinus Torvalds WRITE32(create->cr_bmval[0]); 27491da177e4SLinus Torvalds WRITE32(create->cr_bmval[1]); 27501da177e4SLinus Torvalds ADJUST_ARGS(); 27511da177e4SLinus Torvalds } 2752695e12f8SBenny Halevy return nfserr; 27531da177e4SLinus Torvalds } 27541da177e4SLinus Torvalds 2755b37ad28bSAl Viro static __be32 2756b37ad28bSAl Viro nfsd4_encode_getattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_getattr *getattr) 27571da177e4SLinus Torvalds { 27581da177e4SLinus Torvalds struct svc_fh *fhp = getattr->ga_fhp; 27591da177e4SLinus Torvalds int buflen; 27601da177e4SLinus Torvalds 27611da177e4SLinus Torvalds if (nfserr) 27621da177e4SLinus Torvalds return nfserr; 27631da177e4SLinus Torvalds 27641da177e4SLinus Torvalds buflen = resp->end - resp->p - (COMPOUND_ERR_SLACK_SPACE >> 2); 27651da177e4SLinus Torvalds nfserr = nfsd4_encode_fattr(fhp, fhp->fh_export, fhp->fh_dentry, 276684822d0bSJ. Bruce Fields &resp->p, buflen, getattr->ga_bmval, 2767406a7ea9SFrank Filz resp->rqstp, 0); 27681da177e4SLinus Torvalds return nfserr; 27691da177e4SLinus Torvalds } 27701da177e4SLinus Torvalds 2771695e12f8SBenny Halevy static __be32 2772695e12f8SBenny Halevy nfsd4_encode_getfh(struct nfsd4_compoundres *resp, __be32 nfserr, struct svc_fh **fhpp) 27731da177e4SLinus Torvalds { 2774695e12f8SBenny Halevy struct svc_fh *fhp = *fhpp; 27751da177e4SLinus Torvalds unsigned int len; 2776bc749ca4SJ. Bruce Fields __be32 *p; 27771da177e4SLinus Torvalds 27781da177e4SLinus Torvalds if (!nfserr) { 27791da177e4SLinus Torvalds len = fhp->fh_handle.fh_size; 27801da177e4SLinus Torvalds RESERVE_SPACE(len + 4); 27811da177e4SLinus Torvalds WRITE32(len); 27821da177e4SLinus Torvalds WRITEMEM(&fhp->fh_handle.fh_base, len); 27831da177e4SLinus Torvalds ADJUST_ARGS(); 27841da177e4SLinus Torvalds } 2785695e12f8SBenny Halevy return nfserr; 27861da177e4SLinus Torvalds } 27871da177e4SLinus Torvalds 27881da177e4SLinus Torvalds /* 27891da177e4SLinus Torvalds * Including all fields other than the name, a LOCK4denied structure requires 27901da177e4SLinus Torvalds * 8(clientid) + 4(namelen) + 8(offset) + 8(length) + 4(type) = 32 bytes. 27911da177e4SLinus Torvalds */ 27921da177e4SLinus Torvalds static void 27931da177e4SLinus Torvalds nfsd4_encode_lock_denied(struct nfsd4_compoundres *resp, struct nfsd4_lock_denied *ld) 27941da177e4SLinus Torvalds { 27957c13f344SJ. Bruce Fields struct xdr_netobj *conf = &ld->ld_owner; 2796bc749ca4SJ. Bruce Fields __be32 *p; 27971da177e4SLinus Torvalds 27987c13f344SJ. Bruce Fields RESERVE_SPACE(32 + XDR_LEN(conf->len)); 27991da177e4SLinus Torvalds WRITE64(ld->ld_start); 28001da177e4SLinus Torvalds WRITE64(ld->ld_length); 28011da177e4SLinus Torvalds WRITE32(ld->ld_type); 28027c13f344SJ. Bruce Fields if (conf->len) { 28031da177e4SLinus Torvalds WRITEMEM(&ld->ld_clientid, 8); 28047c13f344SJ. Bruce Fields WRITE32(conf->len); 28057c13f344SJ. Bruce Fields WRITEMEM(conf->data, conf->len); 28067c13f344SJ. Bruce Fields kfree(conf->data); 28071da177e4SLinus Torvalds } else { /* non - nfsv4 lock in conflict, no clientid nor owner */ 28081da177e4SLinus Torvalds WRITE64((u64)0); /* clientid */ 28091da177e4SLinus Torvalds WRITE32(0); /* length of owner name */ 28101da177e4SLinus Torvalds } 28111da177e4SLinus Torvalds ADJUST_ARGS(); 28121da177e4SLinus Torvalds } 28131da177e4SLinus Torvalds 2814695e12f8SBenny Halevy static __be32 2815b37ad28bSAl Viro nfsd4_encode_lock(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lock *lock) 28161da177e4SLinus Torvalds { 2817e2f282b9SBenny Halevy if (!nfserr) 2818e2f282b9SBenny Halevy nfsd4_encode_stateid(resp, &lock->lk_resp_stateid); 2819e2f282b9SBenny Halevy else if (nfserr == nfserr_denied) 28201da177e4SLinus Torvalds nfsd4_encode_lock_denied(resp, &lock->lk_denied); 28211da177e4SLinus Torvalds 2822695e12f8SBenny Halevy return nfserr; 28231da177e4SLinus Torvalds } 28241da177e4SLinus Torvalds 2825695e12f8SBenny Halevy static __be32 2826b37ad28bSAl Viro nfsd4_encode_lockt(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lockt *lockt) 28271da177e4SLinus Torvalds { 28281da177e4SLinus Torvalds if (nfserr == nfserr_denied) 28291da177e4SLinus Torvalds nfsd4_encode_lock_denied(resp, &lockt->lt_denied); 2830695e12f8SBenny Halevy return nfserr; 28311da177e4SLinus Torvalds } 28321da177e4SLinus Torvalds 2833695e12f8SBenny Halevy static __be32 2834b37ad28bSAl Viro nfsd4_encode_locku(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_locku *locku) 28351da177e4SLinus Torvalds { 2836e2f282b9SBenny Halevy if (!nfserr) 2837e2f282b9SBenny Halevy nfsd4_encode_stateid(resp, &locku->lu_stateid); 28381da177e4SLinus Torvalds 2839695e12f8SBenny Halevy return nfserr; 28401da177e4SLinus Torvalds } 28411da177e4SLinus Torvalds 28421da177e4SLinus Torvalds 2843695e12f8SBenny Halevy static __be32 2844b37ad28bSAl Viro nfsd4_encode_link(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_link *link) 28451da177e4SLinus Torvalds { 2846bc749ca4SJ. Bruce Fields __be32 *p; 28471da177e4SLinus Torvalds 28481da177e4SLinus Torvalds if (!nfserr) { 28491da177e4SLinus Torvalds RESERVE_SPACE(20); 2850c654b8a9SJ. Bruce Fields write_cinfo(&p, &link->li_cinfo); 28511da177e4SLinus Torvalds ADJUST_ARGS(); 28521da177e4SLinus Torvalds } 2853695e12f8SBenny Halevy return nfserr; 28541da177e4SLinus Torvalds } 28551da177e4SLinus Torvalds 28561da177e4SLinus Torvalds 2857695e12f8SBenny Halevy static __be32 2858b37ad28bSAl Viro nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open *open) 28591da177e4SLinus Torvalds { 2860bc749ca4SJ. Bruce Fields __be32 *p; 28611da177e4SLinus Torvalds 28621da177e4SLinus Torvalds if (nfserr) 28631da177e4SLinus Torvalds goto out; 28641da177e4SLinus Torvalds 2865e2f282b9SBenny Halevy nfsd4_encode_stateid(resp, &open->op_stateid); 2866e2f282b9SBenny Halevy RESERVE_SPACE(40); 2867c654b8a9SJ. Bruce Fields write_cinfo(&p, &open->op_cinfo); 28681da177e4SLinus Torvalds WRITE32(open->op_rflags); 28691da177e4SLinus Torvalds WRITE32(2); 28701da177e4SLinus Torvalds WRITE32(open->op_bmval[0]); 28711da177e4SLinus Torvalds WRITE32(open->op_bmval[1]); 28721da177e4SLinus Torvalds WRITE32(open->op_delegate_type); 28731da177e4SLinus Torvalds ADJUST_ARGS(); 28741da177e4SLinus Torvalds 28751da177e4SLinus Torvalds switch (open->op_delegate_type) { 28761da177e4SLinus Torvalds case NFS4_OPEN_DELEGATE_NONE: 28771da177e4SLinus Torvalds break; 28781da177e4SLinus Torvalds case NFS4_OPEN_DELEGATE_READ: 2879e2f282b9SBenny Halevy nfsd4_encode_stateid(resp, &open->op_delegate_stateid); 2880e2f282b9SBenny Halevy RESERVE_SPACE(20); 28817b190fecSNeilBrown WRITE32(open->op_recall); 28821da177e4SLinus Torvalds 28831da177e4SLinus Torvalds /* 28841da177e4SLinus Torvalds * TODO: ACE's in delegations 28851da177e4SLinus Torvalds */ 28861da177e4SLinus Torvalds WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); 28871da177e4SLinus Torvalds WRITE32(0); 28881da177e4SLinus Torvalds WRITE32(0); 28891da177e4SLinus Torvalds WRITE32(0); /* XXX: is NULL principal ok? */ 28901da177e4SLinus Torvalds ADJUST_ARGS(); 28911da177e4SLinus Torvalds break; 28921da177e4SLinus Torvalds case NFS4_OPEN_DELEGATE_WRITE: 2893e2f282b9SBenny Halevy nfsd4_encode_stateid(resp, &open->op_delegate_stateid); 2894e2f282b9SBenny Halevy RESERVE_SPACE(32); 28951da177e4SLinus Torvalds WRITE32(0); 28961da177e4SLinus Torvalds 28971da177e4SLinus Torvalds /* 28981da177e4SLinus Torvalds * TODO: space_limit's in delegations 28991da177e4SLinus Torvalds */ 29001da177e4SLinus Torvalds WRITE32(NFS4_LIMIT_SIZE); 29011da177e4SLinus Torvalds WRITE32(~(u32)0); 29021da177e4SLinus Torvalds WRITE32(~(u32)0); 29031da177e4SLinus Torvalds 29041da177e4SLinus Torvalds /* 29051da177e4SLinus Torvalds * TODO: ACE's in delegations 29061da177e4SLinus Torvalds */ 29071da177e4SLinus Torvalds WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); 29081da177e4SLinus Torvalds WRITE32(0); 29091da177e4SLinus Torvalds WRITE32(0); 29101da177e4SLinus Torvalds WRITE32(0); /* XXX: is NULL principal ok? */ 29111da177e4SLinus Torvalds ADJUST_ARGS(); 29121da177e4SLinus Torvalds break; 2913d24433cdSBenny Halevy case NFS4_OPEN_DELEGATE_NONE_EXT: /* 4.1 */ 2914d24433cdSBenny Halevy switch (open->op_why_no_deleg) { 2915d24433cdSBenny Halevy case WND4_CONTENTION: 2916d24433cdSBenny Halevy case WND4_RESOURCE: 2917d24433cdSBenny Halevy RESERVE_SPACE(8); 2918d24433cdSBenny Halevy WRITE32(open->op_why_no_deleg); 2919d24433cdSBenny Halevy WRITE32(0); /* deleg signaling not supported yet */ 2920d24433cdSBenny Halevy break; 2921d24433cdSBenny Halevy default: 2922d24433cdSBenny Halevy RESERVE_SPACE(4); 2923d24433cdSBenny Halevy WRITE32(open->op_why_no_deleg); 2924d24433cdSBenny Halevy } 2925d24433cdSBenny Halevy ADJUST_ARGS(); 2926d24433cdSBenny Halevy break; 29271da177e4SLinus Torvalds default: 29281da177e4SLinus Torvalds BUG(); 29291da177e4SLinus Torvalds } 29301da177e4SLinus Torvalds /* XXX save filehandle here */ 29311da177e4SLinus Torvalds out: 2932695e12f8SBenny Halevy return nfserr; 29331da177e4SLinus Torvalds } 29341da177e4SLinus Torvalds 2935695e12f8SBenny Halevy static __be32 2936b37ad28bSAl Viro nfsd4_encode_open_confirm(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_confirm *oc) 29371da177e4SLinus Torvalds { 2938e2f282b9SBenny Halevy if (!nfserr) 2939e2f282b9SBenny Halevy nfsd4_encode_stateid(resp, &oc->oc_resp_stateid); 29401da177e4SLinus Torvalds 2941695e12f8SBenny Halevy return nfserr; 29421da177e4SLinus Torvalds } 29431da177e4SLinus Torvalds 2944695e12f8SBenny Halevy static __be32 2945b37ad28bSAl Viro nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_downgrade *od) 29461da177e4SLinus Torvalds { 2947e2f282b9SBenny Halevy if (!nfserr) 2948e2f282b9SBenny Halevy nfsd4_encode_stateid(resp, &od->od_stateid); 29491da177e4SLinus Torvalds 2950695e12f8SBenny Halevy return nfserr; 29511da177e4SLinus Torvalds } 29521da177e4SLinus Torvalds 2953b37ad28bSAl Viro static __be32 2954b37ad28bSAl Viro nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr, 295544524359SNeilBrown struct nfsd4_read *read) 29561da177e4SLinus Torvalds { 29571da177e4SLinus Torvalds u32 eof; 2958afc59400SJ. Bruce Fields int v; 2959afc59400SJ. Bruce Fields struct page *page; 29601da177e4SLinus Torvalds unsigned long maxcount; 29611da177e4SLinus Torvalds long len; 2962bc749ca4SJ. Bruce Fields __be32 *p; 29631da177e4SLinus Torvalds 29641da177e4SLinus Torvalds if (nfserr) 29651da177e4SLinus Torvalds return nfserr; 29661da177e4SLinus Torvalds if (resp->xbuf->page_len) 29671da177e4SLinus Torvalds return nfserr_resource; 29681da177e4SLinus Torvalds 29691da177e4SLinus Torvalds RESERVE_SPACE(8); /* eof flag and byte count */ 29701da177e4SLinus Torvalds 29717adae489SGreg Banks maxcount = svc_max_payload(resp->rqstp); 29721da177e4SLinus Torvalds if (maxcount > read->rd_length) 29731da177e4SLinus Torvalds maxcount = read->rd_length; 29741da177e4SLinus Torvalds 29751da177e4SLinus Torvalds len = maxcount; 29761da177e4SLinus Torvalds v = 0; 29771da177e4SLinus Torvalds while (len > 0) { 2978afc59400SJ. Bruce Fields page = *(resp->rqstp->rq_next_page); 2979afc59400SJ. Bruce Fields if (!page) { /* ran out of pages */ 2980d5f50b0cSJ. Bruce Fields maxcount -= len; 2981d5f50b0cSJ. Bruce Fields break; 2982d5f50b0cSJ. Bruce Fields } 2983afc59400SJ. Bruce Fields resp->rqstp->rq_vec[v].iov_base = page_address(page); 29843cc03b16SNeilBrown resp->rqstp->rq_vec[v].iov_len = 298544524359SNeilBrown len < PAGE_SIZE ? len : PAGE_SIZE; 2986afc59400SJ. Bruce Fields resp->rqstp->rq_next_page++; 29871da177e4SLinus Torvalds v++; 29881da177e4SLinus Torvalds len -= PAGE_SIZE; 29891da177e4SLinus Torvalds } 29901da177e4SLinus Torvalds read->rd_vlen = v; 29911da177e4SLinus Torvalds 2992039a87caSJ. Bruce Fields nfserr = nfsd_read_file(read->rd_rqstp, read->rd_fhp, read->rd_filp, 29933cc03b16SNeilBrown read->rd_offset, resp->rqstp->rq_vec, read->rd_vlen, 29941da177e4SLinus Torvalds &maxcount); 29951da177e4SLinus Torvalds 29961da177e4SLinus Torvalds if (nfserr) 29971da177e4SLinus Torvalds return nfserr; 299844524359SNeilBrown eof = (read->rd_offset + maxcount >= 299944524359SNeilBrown read->rd_fhp->fh_dentry->d_inode->i_size); 30001da177e4SLinus Torvalds 30011da177e4SLinus Torvalds WRITE32(eof); 30021da177e4SLinus Torvalds WRITE32(maxcount); 30031da177e4SLinus Torvalds ADJUST_ARGS(); 30046ed6deccSNeilBrown resp->xbuf->head[0].iov_len = (char*)p 30056ed6deccSNeilBrown - (char*)resp->xbuf->head[0].iov_base; 30061da177e4SLinus Torvalds resp->xbuf->page_len = maxcount; 30071da177e4SLinus Torvalds 30086ed6deccSNeilBrown /* Use rest of head for padding and remaining ops: */ 30096ed6deccSNeilBrown resp->xbuf->tail[0].iov_base = p; 30101da177e4SLinus Torvalds resp->xbuf->tail[0].iov_len = 0; 30111da177e4SLinus Torvalds if (maxcount&3) { 30126ed6deccSNeilBrown RESERVE_SPACE(4); 30136ed6deccSNeilBrown WRITE32(0); 30141da177e4SLinus Torvalds resp->xbuf->tail[0].iov_base += maxcount&3; 30151da177e4SLinus Torvalds resp->xbuf->tail[0].iov_len = 4 - (maxcount&3); 30166ed6deccSNeilBrown ADJUST_ARGS(); 30171da177e4SLinus Torvalds } 30181da177e4SLinus Torvalds return 0; 30191da177e4SLinus Torvalds } 30201da177e4SLinus Torvalds 3021b37ad28bSAl Viro static __be32 3022b37ad28bSAl Viro nfsd4_encode_readlink(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readlink *readlink) 30231da177e4SLinus Torvalds { 30241da177e4SLinus Torvalds int maxcount; 30251da177e4SLinus Torvalds char *page; 3026bc749ca4SJ. Bruce Fields __be32 *p; 30271da177e4SLinus Torvalds 30281da177e4SLinus Torvalds if (nfserr) 30291da177e4SLinus Torvalds return nfserr; 30301da177e4SLinus Torvalds if (resp->xbuf->page_len) 30311da177e4SLinus Torvalds return nfserr_resource; 3032afc59400SJ. Bruce Fields if (!*resp->rqstp->rq_next_page) 3033d5f50b0cSJ. Bruce Fields return nfserr_resource; 30341da177e4SLinus Torvalds 3035afc59400SJ. Bruce Fields page = page_address(*(resp->rqstp->rq_next_page++)); 30361da177e4SLinus Torvalds 30371da177e4SLinus Torvalds maxcount = PAGE_SIZE; 30381da177e4SLinus Torvalds RESERVE_SPACE(4); 30391da177e4SLinus Torvalds 30401da177e4SLinus Torvalds /* 30411da177e4SLinus Torvalds * XXX: By default, the ->readlink() VFS op will truncate symlinks 30421da177e4SLinus Torvalds * if they would overflow the buffer. Is this kosher in NFSv4? If 30431da177e4SLinus Torvalds * not, one easy fix is: if ->readlink() precisely fills the buffer, 30441da177e4SLinus Torvalds * assume that truncation occurred, and return NFS4ERR_RESOURCE. 30451da177e4SLinus Torvalds */ 30461da177e4SLinus Torvalds nfserr = nfsd_readlink(readlink->rl_rqstp, readlink->rl_fhp, page, &maxcount); 30471da177e4SLinus Torvalds if (nfserr == nfserr_isdir) 30481da177e4SLinus Torvalds return nfserr_inval; 30491da177e4SLinus Torvalds if (nfserr) 30501da177e4SLinus Torvalds return nfserr; 30511da177e4SLinus Torvalds 30521da177e4SLinus Torvalds WRITE32(maxcount); 30531da177e4SLinus Torvalds ADJUST_ARGS(); 30546ed6deccSNeilBrown resp->xbuf->head[0].iov_len = (char*)p 30556ed6deccSNeilBrown - (char*)resp->xbuf->head[0].iov_base; 30561da177e4SLinus Torvalds resp->xbuf->page_len = maxcount; 30576ed6deccSNeilBrown 30586ed6deccSNeilBrown /* Use rest of head for padding and remaining ops: */ 30596ed6deccSNeilBrown resp->xbuf->tail[0].iov_base = p; 30606ed6deccSNeilBrown resp->xbuf->tail[0].iov_len = 0; 30611da177e4SLinus Torvalds if (maxcount&3) { 30626ed6deccSNeilBrown RESERVE_SPACE(4); 30636ed6deccSNeilBrown WRITE32(0); 30641da177e4SLinus Torvalds resp->xbuf->tail[0].iov_base += maxcount&3; 30651da177e4SLinus Torvalds resp->xbuf->tail[0].iov_len = 4 - (maxcount&3); 30666ed6deccSNeilBrown ADJUST_ARGS(); 30671da177e4SLinus Torvalds } 30681da177e4SLinus Torvalds return 0; 30691da177e4SLinus Torvalds } 30701da177e4SLinus Torvalds 3071b37ad28bSAl Viro static __be32 3072b37ad28bSAl Viro nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readdir *readdir) 30731da177e4SLinus Torvalds { 30741da177e4SLinus Torvalds int maxcount; 30751da177e4SLinus Torvalds loff_t offset; 30762ebbc012SAl Viro __be32 *page, *savep, *tailbase; 3077bc749ca4SJ. Bruce Fields __be32 *p; 30781da177e4SLinus Torvalds 30791da177e4SLinus Torvalds if (nfserr) 30801da177e4SLinus Torvalds return nfserr; 30811da177e4SLinus Torvalds if (resp->xbuf->page_len) 30821da177e4SLinus Torvalds return nfserr_resource; 3083afc59400SJ. Bruce Fields if (!*resp->rqstp->rq_next_page) 3084d5f50b0cSJ. Bruce Fields return nfserr_resource; 30851da177e4SLinus Torvalds 3086ab4684d1SChuck Lever RESERVE_SPACE(NFS4_VERIFIER_SIZE); 30871da177e4SLinus Torvalds savep = p; 30881da177e4SLinus Torvalds 30891da177e4SLinus Torvalds /* XXX: Following NFSv3, we ignore the READDIR verifier for now. */ 30901da177e4SLinus Torvalds WRITE32(0); 30911da177e4SLinus Torvalds WRITE32(0); 30921da177e4SLinus Torvalds ADJUST_ARGS(); 30931da177e4SLinus Torvalds resp->xbuf->head[0].iov_len = ((char*)resp->p) - (char*)resp->xbuf->head[0].iov_base; 3094bb6e8a9fSNeilBrown tailbase = p; 30951da177e4SLinus Torvalds 30961da177e4SLinus Torvalds maxcount = PAGE_SIZE; 30971da177e4SLinus Torvalds if (maxcount > readdir->rd_maxcount) 30981da177e4SLinus Torvalds maxcount = readdir->rd_maxcount; 30991da177e4SLinus Torvalds 31001da177e4SLinus Torvalds /* 31011da177e4SLinus Torvalds * Convert from bytes to words, account for the two words already 31021da177e4SLinus Torvalds * written, make sure to leave two words at the end for the next 31031da177e4SLinus Torvalds * pointer and eof field. 31041da177e4SLinus Torvalds */ 31051da177e4SLinus Torvalds maxcount = (maxcount >> 2) - 4; 31061da177e4SLinus Torvalds if (maxcount < 0) { 31071da177e4SLinus Torvalds nfserr = nfserr_toosmall; 31081da177e4SLinus Torvalds goto err_no_verf; 31091da177e4SLinus Torvalds } 31101da177e4SLinus Torvalds 3111afc59400SJ. Bruce Fields page = page_address(*(resp->rqstp->rq_next_page++)); 31121da177e4SLinus Torvalds readdir->common.err = 0; 31131da177e4SLinus Torvalds readdir->buflen = maxcount; 31141da177e4SLinus Torvalds readdir->buffer = page; 31151da177e4SLinus Torvalds readdir->offset = NULL; 31161da177e4SLinus Torvalds 31171da177e4SLinus Torvalds offset = readdir->rd_cookie; 31181da177e4SLinus Torvalds nfserr = nfsd_readdir(readdir->rd_rqstp, readdir->rd_fhp, 31191da177e4SLinus Torvalds &offset, 31201da177e4SLinus Torvalds &readdir->common, nfsd4_encode_dirent); 31211da177e4SLinus Torvalds if (nfserr == nfs_ok && 31221da177e4SLinus Torvalds readdir->common.err == nfserr_toosmall && 31231da177e4SLinus Torvalds readdir->buffer == page) 31241da177e4SLinus Torvalds nfserr = nfserr_toosmall; 31251da177e4SLinus Torvalds if (nfserr) 31261da177e4SLinus Torvalds goto err_no_verf; 31271da177e4SLinus Torvalds 31281da177e4SLinus Torvalds if (readdir->offset) 31291da177e4SLinus Torvalds xdr_encode_hyper(readdir->offset, offset); 31301da177e4SLinus Torvalds 31311da177e4SLinus Torvalds p = readdir->buffer; 31321da177e4SLinus Torvalds *p++ = 0; /* no more entries */ 31331da177e4SLinus Torvalds *p++ = htonl(readdir->common.err == nfserr_eof); 3134afc59400SJ. Bruce Fields resp->xbuf->page_len = ((char*)p) - 3135afc59400SJ. Bruce Fields (char*)page_address(*(resp->rqstp->rq_next_page-1)); 31361da177e4SLinus Torvalds 3137bb6e8a9fSNeilBrown /* Use rest of head for padding and remaining ops: */ 3138bb6e8a9fSNeilBrown resp->xbuf->tail[0].iov_base = tailbase; 31391da177e4SLinus Torvalds resp->xbuf->tail[0].iov_len = 0; 31401da177e4SLinus Torvalds resp->p = resp->xbuf->tail[0].iov_base; 3141bb6e8a9fSNeilBrown resp->end = resp->p + (PAGE_SIZE - resp->xbuf->head[0].iov_len)/4; 31421da177e4SLinus Torvalds 31431da177e4SLinus Torvalds return 0; 31441da177e4SLinus Torvalds err_no_verf: 31451da177e4SLinus Torvalds p = savep; 31461da177e4SLinus Torvalds ADJUST_ARGS(); 31471da177e4SLinus Torvalds return nfserr; 31481da177e4SLinus Torvalds } 31491da177e4SLinus Torvalds 3150695e12f8SBenny Halevy static __be32 3151b37ad28bSAl Viro nfsd4_encode_remove(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_remove *remove) 31521da177e4SLinus Torvalds { 3153bc749ca4SJ. Bruce Fields __be32 *p; 31541da177e4SLinus Torvalds 31551da177e4SLinus Torvalds if (!nfserr) { 31561da177e4SLinus Torvalds RESERVE_SPACE(20); 3157c654b8a9SJ. Bruce Fields write_cinfo(&p, &remove->rm_cinfo); 31581da177e4SLinus Torvalds ADJUST_ARGS(); 31591da177e4SLinus Torvalds } 3160695e12f8SBenny Halevy return nfserr; 31611da177e4SLinus Torvalds } 31621da177e4SLinus Torvalds 3163695e12f8SBenny Halevy static __be32 3164b37ad28bSAl Viro nfsd4_encode_rename(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_rename *rename) 31651da177e4SLinus Torvalds { 3166bc749ca4SJ. Bruce Fields __be32 *p; 31671da177e4SLinus Torvalds 31681da177e4SLinus Torvalds if (!nfserr) { 31691da177e4SLinus Torvalds RESERVE_SPACE(40); 3170c654b8a9SJ. Bruce Fields write_cinfo(&p, &rename->rn_sinfo); 3171c654b8a9SJ. Bruce Fields write_cinfo(&p, &rename->rn_tinfo); 31721da177e4SLinus Torvalds ADJUST_ARGS(); 31731da177e4SLinus Torvalds } 3174695e12f8SBenny Halevy return nfserr; 31751da177e4SLinus Torvalds } 31761da177e4SLinus Torvalds 3177695e12f8SBenny Halevy static __be32 317822b6dee8SMi Jinlong nfsd4_do_encode_secinfo(struct nfsd4_compoundres *resp, 317922b6dee8SMi Jinlong __be32 nfserr, struct svc_export *exp) 3180dcb488a3SAndy Adamson { 3181676e4ebdSChuck Lever u32 i, nflavs, supported; 31824796f457SJ. Bruce Fields struct exp_flavor_info *flavs; 31834796f457SJ. Bruce Fields struct exp_flavor_info def_flavs[2]; 3184676e4ebdSChuck Lever __be32 *p, *flavorsp; 3185676e4ebdSChuck Lever static bool report = true; 3186dcb488a3SAndy Adamson 3187dcb488a3SAndy Adamson if (nfserr) 3188dcb488a3SAndy Adamson goto out; 31894796f457SJ. Bruce Fields if (exp->ex_nflavors) { 31904796f457SJ. Bruce Fields flavs = exp->ex_flavors; 31914796f457SJ. Bruce Fields nflavs = exp->ex_nflavors; 31924796f457SJ. Bruce Fields } else { /* Handling of some defaults in absence of real secinfo: */ 31934796f457SJ. Bruce Fields flavs = def_flavs; 31944796f457SJ. Bruce Fields if (exp->ex_client->flavour->flavour == RPC_AUTH_UNIX) { 31954796f457SJ. Bruce Fields nflavs = 2; 31964796f457SJ. Bruce Fields flavs[0].pseudoflavor = RPC_AUTH_UNIX; 31974796f457SJ. Bruce Fields flavs[1].pseudoflavor = RPC_AUTH_NULL; 31984796f457SJ. Bruce Fields } else if (exp->ex_client->flavour->flavour == RPC_AUTH_GSS) { 31994796f457SJ. Bruce Fields nflavs = 1; 32004796f457SJ. Bruce Fields flavs[0].pseudoflavor 32014796f457SJ. Bruce Fields = svcauth_gss_flavor(exp->ex_client); 32024796f457SJ. Bruce Fields } else { 32034796f457SJ. Bruce Fields nflavs = 1; 32044796f457SJ. Bruce Fields flavs[0].pseudoflavor 32054796f457SJ. Bruce Fields = exp->ex_client->flavour->flavour; 32064796f457SJ. Bruce Fields } 32074796f457SJ. Bruce Fields } 32084796f457SJ. Bruce Fields 3209676e4ebdSChuck Lever supported = 0; 3210dcb488a3SAndy Adamson RESERVE_SPACE(4); 3211676e4ebdSChuck Lever flavorsp = p++; /* to be backfilled later */ 3212dcb488a3SAndy Adamson ADJUST_ARGS(); 3213676e4ebdSChuck Lever 32144796f457SJ. Bruce Fields for (i = 0; i < nflavs; i++) { 3215676e4ebdSChuck Lever rpc_authflavor_t pf = flavs[i].pseudoflavor; 3216a77c806fSChuck Lever struct rpcsec_gss_info info; 3217dcb488a3SAndy Adamson 3218676e4ebdSChuck Lever if (rpcauth_get_gssinfo(pf, &info) == 0) { 3219676e4ebdSChuck Lever supported++; 3220ed9411a0SChuck Lever RESERVE_SPACE(4 + 4 + info.oid.len + 4 + 4); 3221dcb488a3SAndy Adamson WRITE32(RPC_AUTH_GSS); 3222a77c806fSChuck Lever WRITE32(info.oid.len); 3223a77c806fSChuck Lever WRITEMEM(info.oid.data, info.oid.len); 3224a77c806fSChuck Lever WRITE32(info.qop); 3225a77c806fSChuck Lever WRITE32(info.service); 3226dcb488a3SAndy Adamson ADJUST_ARGS(); 3227676e4ebdSChuck Lever } else if (pf < RPC_AUTH_MAXFLAVOR) { 3228676e4ebdSChuck Lever supported++; 3229dcb488a3SAndy Adamson RESERVE_SPACE(4); 3230676e4ebdSChuck Lever WRITE32(pf); 3231dcb488a3SAndy Adamson ADJUST_ARGS(); 3232676e4ebdSChuck Lever } else { 3233676e4ebdSChuck Lever if (report) 3234676e4ebdSChuck Lever pr_warn("NFS: SECINFO: security flavor %u " 3235676e4ebdSChuck Lever "is not supported\n", pf); 3236dcb488a3SAndy Adamson } 3237dcb488a3SAndy Adamson } 3238a77c806fSChuck Lever 3239676e4ebdSChuck Lever if (nflavs != supported) 3240676e4ebdSChuck Lever report = false; 3241676e4ebdSChuck Lever *flavorsp = htonl(supported); 3242676e4ebdSChuck Lever 3243dcb488a3SAndy Adamson out: 3244dcb488a3SAndy Adamson if (exp) 3245dcb488a3SAndy Adamson exp_put(exp); 3246695e12f8SBenny Halevy return nfserr; 3247dcb488a3SAndy Adamson } 3248dcb488a3SAndy Adamson 324922b6dee8SMi Jinlong static __be32 325022b6dee8SMi Jinlong nfsd4_encode_secinfo(struct nfsd4_compoundres *resp, __be32 nfserr, 325122b6dee8SMi Jinlong struct nfsd4_secinfo *secinfo) 325222b6dee8SMi Jinlong { 325322b6dee8SMi Jinlong return nfsd4_do_encode_secinfo(resp, nfserr, secinfo->si_exp); 325422b6dee8SMi Jinlong } 325522b6dee8SMi Jinlong 325622b6dee8SMi Jinlong static __be32 325722b6dee8SMi Jinlong nfsd4_encode_secinfo_no_name(struct nfsd4_compoundres *resp, __be32 nfserr, 325822b6dee8SMi Jinlong struct nfsd4_secinfo_no_name *secinfo) 325922b6dee8SMi Jinlong { 326022b6dee8SMi Jinlong return nfsd4_do_encode_secinfo(resp, nfserr, secinfo->sin_exp); 326122b6dee8SMi Jinlong } 326222b6dee8SMi Jinlong 32631da177e4SLinus Torvalds /* 32641da177e4SLinus Torvalds * The SETATTR encode routine is special -- it always encodes a bitmap, 32651da177e4SLinus Torvalds * regardless of the error status. 32661da177e4SLinus Torvalds */ 3267695e12f8SBenny Halevy static __be32 3268b37ad28bSAl Viro nfsd4_encode_setattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setattr *setattr) 32691da177e4SLinus Torvalds { 3270bc749ca4SJ. Bruce Fields __be32 *p; 32711da177e4SLinus Torvalds 327218032ca0SDavid Quigley RESERVE_SPACE(16); 32731da177e4SLinus Torvalds if (nfserr) { 327418032ca0SDavid Quigley WRITE32(3); 327518032ca0SDavid Quigley WRITE32(0); 32761da177e4SLinus Torvalds WRITE32(0); 32771da177e4SLinus Torvalds WRITE32(0); 32781da177e4SLinus Torvalds } 32791da177e4SLinus Torvalds else { 328018032ca0SDavid Quigley WRITE32(3); 32811da177e4SLinus Torvalds WRITE32(setattr->sa_bmval[0]); 32821da177e4SLinus Torvalds WRITE32(setattr->sa_bmval[1]); 328318032ca0SDavid Quigley WRITE32(setattr->sa_bmval[2]); 32841da177e4SLinus Torvalds } 32851da177e4SLinus Torvalds ADJUST_ARGS(); 3286695e12f8SBenny Halevy return nfserr; 32871da177e4SLinus Torvalds } 32881da177e4SLinus Torvalds 3289695e12f8SBenny Halevy static __be32 3290b37ad28bSAl Viro nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setclientid *scd) 32911da177e4SLinus Torvalds { 3292bc749ca4SJ. Bruce Fields __be32 *p; 32931da177e4SLinus Torvalds 32941da177e4SLinus Torvalds if (!nfserr) { 3295ab4684d1SChuck Lever RESERVE_SPACE(8 + NFS4_VERIFIER_SIZE); 32961da177e4SLinus Torvalds WRITEMEM(&scd->se_clientid, 8); 3297ab4684d1SChuck Lever WRITEMEM(&scd->se_confirm, NFS4_VERIFIER_SIZE); 32981da177e4SLinus Torvalds ADJUST_ARGS(); 32991da177e4SLinus Torvalds } 33001da177e4SLinus Torvalds else if (nfserr == nfserr_clid_inuse) { 33011da177e4SLinus Torvalds RESERVE_SPACE(8); 33021da177e4SLinus Torvalds WRITE32(0); 33031da177e4SLinus Torvalds WRITE32(0); 33041da177e4SLinus Torvalds ADJUST_ARGS(); 33051da177e4SLinus Torvalds } 3306695e12f8SBenny Halevy return nfserr; 33071da177e4SLinus Torvalds } 33081da177e4SLinus Torvalds 3309695e12f8SBenny Halevy static __be32 3310b37ad28bSAl Viro nfsd4_encode_write(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_write *write) 33111da177e4SLinus Torvalds { 3312bc749ca4SJ. Bruce Fields __be32 *p; 33131da177e4SLinus Torvalds 33141da177e4SLinus Torvalds if (!nfserr) { 33151da177e4SLinus Torvalds RESERVE_SPACE(16); 33161da177e4SLinus Torvalds WRITE32(write->wr_bytes_written); 33171da177e4SLinus Torvalds WRITE32(write->wr_how_written); 3318ab4684d1SChuck Lever WRITEMEM(write->wr_verifier.data, NFS4_VERIFIER_SIZE); 33191da177e4SLinus Torvalds ADJUST_ARGS(); 33201da177e4SLinus Torvalds } 3321695e12f8SBenny Halevy return nfserr; 33221da177e4SLinus Torvalds } 33231da177e4SLinus Torvalds 3324*57266a6eSJ. Bruce Fields static const u32 nfs4_minimal_spo_must_enforce[2] = { 3325*57266a6eSJ. Bruce Fields [1] = 1 << (OP_BIND_CONN_TO_SESSION - 32) | 3326*57266a6eSJ. Bruce Fields 1 << (OP_EXCHANGE_ID - 32) | 3327*57266a6eSJ. Bruce Fields 1 << (OP_CREATE_SESSION - 32) | 3328*57266a6eSJ. Bruce Fields 1 << (OP_DESTROY_SESSION - 32) | 3329*57266a6eSJ. Bruce Fields 1 << (OP_DESTROY_CLIENTID - 32) 3330*57266a6eSJ. Bruce Fields }; 3331*57266a6eSJ. Bruce Fields 3332695e12f8SBenny Halevy static __be32 333357b7b43bSJ. Bruce Fields nfsd4_encode_exchange_id(struct nfsd4_compoundres *resp, __be32 nfserr, 33342db134ebSAndy Adamson struct nfsd4_exchange_id *exid) 33352db134ebSAndy Adamson { 3336bc749ca4SJ. Bruce Fields __be32 *p; 33370733d213SAndy Adamson char *major_id; 33380733d213SAndy Adamson char *server_scope; 33390733d213SAndy Adamson int major_id_sz; 33400733d213SAndy Adamson int server_scope_sz; 33410733d213SAndy Adamson uint64_t minor_id = 0; 33420733d213SAndy Adamson 33430733d213SAndy Adamson if (nfserr) 33442db134ebSAndy Adamson return nfserr; 33450733d213SAndy Adamson 33460733d213SAndy Adamson major_id = utsname()->nodename; 33470733d213SAndy Adamson major_id_sz = strlen(major_id); 33480733d213SAndy Adamson server_scope = utsname()->nodename; 33490733d213SAndy Adamson server_scope_sz = strlen(server_scope); 33500733d213SAndy Adamson 33510733d213SAndy Adamson RESERVE_SPACE( 33520733d213SAndy Adamson 8 /* eir_clientid */ + 33530733d213SAndy Adamson 4 /* eir_sequenceid */ + 33540733d213SAndy Adamson 4 /* eir_flags */ + 33550733d213SAndy Adamson 4 /* spr_how (SP4_NONE) */ + 33560733d213SAndy Adamson 8 /* so_minor_id */ + 33570733d213SAndy Adamson 4 /* so_major_id.len */ + 33580733d213SAndy Adamson (XDR_QUADLEN(major_id_sz) * 4) + 33590733d213SAndy Adamson 4 /* eir_server_scope.len */ + 33600733d213SAndy Adamson (XDR_QUADLEN(server_scope_sz) * 4) + 33610733d213SAndy Adamson 4 /* eir_server_impl_id.count (0) */); 33620733d213SAndy Adamson 33630733d213SAndy Adamson WRITEMEM(&exid->clientid, 8); 33640733d213SAndy Adamson WRITE32(exid->seqid); 33650733d213SAndy Adamson WRITE32(exid->flags); 33660733d213SAndy Adamson 33670733d213SAndy Adamson /* state_protect4_r. Currently only support SP4_NONE */ 33680733d213SAndy Adamson BUG_ON(exid->spa_how != SP4_NONE); 33690733d213SAndy Adamson WRITE32(exid->spa_how); 3370*57266a6eSJ. Bruce Fields switch (exid->spa_how) { 3371*57266a6eSJ. Bruce Fields case SP4_NONE: 3372*57266a6eSJ. Bruce Fields break; 3373*57266a6eSJ. Bruce Fields case SP4_MACH_CRED: 3374*57266a6eSJ. Bruce Fields /* spo_must_enforce bitmap: */ 3375*57266a6eSJ. Bruce Fields WRITE32(2); 3376*57266a6eSJ. Bruce Fields WRITE32(nfs4_minimal_spo_must_enforce[0]); 3377*57266a6eSJ. Bruce Fields WRITE32(nfs4_minimal_spo_must_enforce[1]); 3378*57266a6eSJ. Bruce Fields /* empty spo_must_allow bitmap: */ 3379*57266a6eSJ. Bruce Fields WRITE32(0); 3380*57266a6eSJ. Bruce Fields break; 3381*57266a6eSJ. Bruce Fields default: 3382*57266a6eSJ. Bruce Fields WARN_ON_ONCE(1); 3383*57266a6eSJ. Bruce Fields } 33840733d213SAndy Adamson 33850733d213SAndy Adamson /* The server_owner struct */ 33860733d213SAndy Adamson WRITE64(minor_id); /* Minor id */ 33870733d213SAndy Adamson /* major id */ 33880733d213SAndy Adamson WRITE32(major_id_sz); 33890733d213SAndy Adamson WRITEMEM(major_id, major_id_sz); 33900733d213SAndy Adamson 33910733d213SAndy Adamson /* Server scope */ 33920733d213SAndy Adamson WRITE32(server_scope_sz); 33930733d213SAndy Adamson WRITEMEM(server_scope, server_scope_sz); 33940733d213SAndy Adamson 33950733d213SAndy Adamson /* Implementation id */ 33960733d213SAndy Adamson WRITE32(0); /* zero length nfs_impl_id4 array */ 33970733d213SAndy Adamson ADJUST_ARGS(); 33980733d213SAndy Adamson return 0; 33992db134ebSAndy Adamson } 34002db134ebSAndy Adamson 34012db134ebSAndy Adamson static __be32 340257b7b43bSJ. Bruce Fields nfsd4_encode_create_session(struct nfsd4_compoundres *resp, __be32 nfserr, 34032db134ebSAndy Adamson struct nfsd4_create_session *sess) 34042db134ebSAndy Adamson { 3405bc749ca4SJ. Bruce Fields __be32 *p; 3406ec6b5d7bSAndy Adamson 3407ec6b5d7bSAndy Adamson if (nfserr) 34082db134ebSAndy Adamson return nfserr; 3409ec6b5d7bSAndy Adamson 3410ec6b5d7bSAndy Adamson RESERVE_SPACE(24); 3411ec6b5d7bSAndy Adamson WRITEMEM(sess->sessionid.data, NFS4_MAX_SESSIONID_LEN); 3412ec6b5d7bSAndy Adamson WRITE32(sess->seqid); 3413ec6b5d7bSAndy Adamson WRITE32(sess->flags); 3414ec6b5d7bSAndy Adamson ADJUST_ARGS(); 3415ec6b5d7bSAndy Adamson 3416ec6b5d7bSAndy Adamson RESERVE_SPACE(28); 3417ec6b5d7bSAndy Adamson WRITE32(0); /* headerpadsz */ 3418ec6b5d7bSAndy Adamson WRITE32(sess->fore_channel.maxreq_sz); 3419ec6b5d7bSAndy Adamson WRITE32(sess->fore_channel.maxresp_sz); 3420ec6b5d7bSAndy Adamson WRITE32(sess->fore_channel.maxresp_cached); 3421ec6b5d7bSAndy Adamson WRITE32(sess->fore_channel.maxops); 3422ec6b5d7bSAndy Adamson WRITE32(sess->fore_channel.maxreqs); 3423ec6b5d7bSAndy Adamson WRITE32(sess->fore_channel.nr_rdma_attrs); 3424ec6b5d7bSAndy Adamson ADJUST_ARGS(); 3425ec6b5d7bSAndy Adamson 3426ec6b5d7bSAndy Adamson if (sess->fore_channel.nr_rdma_attrs) { 3427ec6b5d7bSAndy Adamson RESERVE_SPACE(4); 3428ec6b5d7bSAndy Adamson WRITE32(sess->fore_channel.rdma_attrs); 3429ec6b5d7bSAndy Adamson ADJUST_ARGS(); 3430ec6b5d7bSAndy Adamson } 3431ec6b5d7bSAndy Adamson 3432ec6b5d7bSAndy Adamson RESERVE_SPACE(28); 3433ec6b5d7bSAndy Adamson WRITE32(0); /* headerpadsz */ 3434ec6b5d7bSAndy Adamson WRITE32(sess->back_channel.maxreq_sz); 3435ec6b5d7bSAndy Adamson WRITE32(sess->back_channel.maxresp_sz); 3436ec6b5d7bSAndy Adamson WRITE32(sess->back_channel.maxresp_cached); 3437ec6b5d7bSAndy Adamson WRITE32(sess->back_channel.maxops); 3438ec6b5d7bSAndy Adamson WRITE32(sess->back_channel.maxreqs); 3439ec6b5d7bSAndy Adamson WRITE32(sess->back_channel.nr_rdma_attrs); 3440ec6b5d7bSAndy Adamson ADJUST_ARGS(); 3441ec6b5d7bSAndy Adamson 3442ec6b5d7bSAndy Adamson if (sess->back_channel.nr_rdma_attrs) { 3443ec6b5d7bSAndy Adamson RESERVE_SPACE(4); 3444ec6b5d7bSAndy Adamson WRITE32(sess->back_channel.rdma_attrs); 3445ec6b5d7bSAndy Adamson ADJUST_ARGS(); 3446ec6b5d7bSAndy Adamson } 3447ec6b5d7bSAndy Adamson return 0; 34482db134ebSAndy Adamson } 34492db134ebSAndy Adamson 34502db134ebSAndy Adamson static __be32 345157b7b43bSJ. Bruce Fields nfsd4_encode_destroy_session(struct nfsd4_compoundres *resp, __be32 nfserr, 34522db134ebSAndy Adamson struct nfsd4_destroy_session *destroy_session) 34532db134ebSAndy Adamson { 34542db134ebSAndy Adamson return nfserr; 34552db134ebSAndy Adamson } 34562db134ebSAndy Adamson 3457c47d832bSDaniel Mack static __be32 3458d1829b38SJ. Bruce Fields nfsd4_encode_free_stateid(struct nfsd4_compoundres *resp, __be32 nfserr, 3459e1ca12dfSBryan Schumaker struct nfsd4_free_stateid *free_stateid) 3460e1ca12dfSBryan Schumaker { 3461e1ca12dfSBryan Schumaker __be32 *p; 3462e1ca12dfSBryan Schumaker 3463e1ca12dfSBryan Schumaker if (nfserr) 3464e1ca12dfSBryan Schumaker return nfserr; 3465e1ca12dfSBryan Schumaker 3466e1ca12dfSBryan Schumaker RESERVE_SPACE(4); 3467d1829b38SJ. Bruce Fields *p++ = nfserr; 3468e1ca12dfSBryan Schumaker ADJUST_ARGS(); 3469e1ca12dfSBryan Schumaker return nfserr; 3470e1ca12dfSBryan Schumaker } 3471e1ca12dfSBryan Schumaker 3472e1ca12dfSBryan Schumaker static __be32 347357b7b43bSJ. Bruce Fields nfsd4_encode_sequence(struct nfsd4_compoundres *resp, __be32 nfserr, 34742db134ebSAndy Adamson struct nfsd4_sequence *seq) 34752db134ebSAndy Adamson { 3476bc749ca4SJ. Bruce Fields __be32 *p; 3477b85d4c01SBenny Halevy 3478b85d4c01SBenny Halevy if (nfserr) 34792db134ebSAndy Adamson return nfserr; 3480b85d4c01SBenny Halevy 3481b85d4c01SBenny Halevy RESERVE_SPACE(NFS4_MAX_SESSIONID_LEN + 20); 3482b85d4c01SBenny Halevy WRITEMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN); 3483b85d4c01SBenny Halevy WRITE32(seq->seqid); 3484b85d4c01SBenny Halevy WRITE32(seq->slotid); 3485b7d7ca35SJ. Bruce Fields /* Note slotid's are numbered from zero: */ 3486b7d7ca35SJ. Bruce Fields WRITE32(seq->maxslots - 1); /* sr_highest_slotid */ 3487b7d7ca35SJ. Bruce Fields WRITE32(seq->maxslots - 1); /* sr_target_highest_slotid */ 34880d7bb719SJ. Bruce Fields WRITE32(seq->status_flags); 3489b85d4c01SBenny Halevy 3490b85d4c01SBenny Halevy ADJUST_ARGS(); 3491557ce264SAndy Adamson resp->cstate.datap = p; /* DRC cache data pointer */ 3492b85d4c01SBenny Halevy return 0; 34932db134ebSAndy Adamson } 34942db134ebSAndy Adamson 34952355c596SJ. Bruce Fields static __be32 349657b7b43bSJ. Bruce Fields nfsd4_encode_test_stateid(struct nfsd4_compoundres *resp, __be32 nfserr, 349717456804SBryan Schumaker struct nfsd4_test_stateid *test_stateid) 349817456804SBryan Schumaker { 349903cfb420SBryan Schumaker struct nfsd4_test_stateid_id *stateid, *next; 350017456804SBryan Schumaker __be32 *p; 350117456804SBryan Schumaker 350203cfb420SBryan Schumaker RESERVE_SPACE(4 + (4 * test_stateid->ts_num_ids)); 350317456804SBryan Schumaker *p++ = htonl(test_stateid->ts_num_ids); 350417456804SBryan Schumaker 350503cfb420SBryan Schumaker list_for_each_entry_safe(stateid, next, &test_stateid->ts_stateid_list, ts_id_list) { 350602f5fde5SAl Viro *p++ = stateid->ts_id_status; 350717456804SBryan Schumaker } 350817456804SBryan Schumaker 350903cfb420SBryan Schumaker ADJUST_ARGS(); 351017456804SBryan Schumaker return nfserr; 351117456804SBryan Schumaker } 351217456804SBryan Schumaker 35132db134ebSAndy Adamson static __be32 3514695e12f8SBenny Halevy nfsd4_encode_noop(struct nfsd4_compoundres *resp, __be32 nfserr, void *p) 3515695e12f8SBenny Halevy { 3516695e12f8SBenny Halevy return nfserr; 3517695e12f8SBenny Halevy } 3518695e12f8SBenny Halevy 3519695e12f8SBenny Halevy typedef __be32(* nfsd4_enc)(struct nfsd4_compoundres *, __be32, void *); 3520695e12f8SBenny Halevy 35212db134ebSAndy Adamson /* 35222db134ebSAndy Adamson * Note: nfsd4_enc_ops vector is shared for v4.0 and v4.1 35232db134ebSAndy Adamson * since we don't need to filter out obsolete ops as this is 35242db134ebSAndy Adamson * done in the decoding phase. 35252db134ebSAndy Adamson */ 3526695e12f8SBenny Halevy static nfsd4_enc nfsd4_enc_ops[] = { 3527ad1060c8SJ. Bruce Fields [OP_ACCESS] = (nfsd4_enc)nfsd4_encode_access, 3528ad1060c8SJ. Bruce Fields [OP_CLOSE] = (nfsd4_enc)nfsd4_encode_close, 3529ad1060c8SJ. Bruce Fields [OP_COMMIT] = (nfsd4_enc)nfsd4_encode_commit, 3530ad1060c8SJ. Bruce Fields [OP_CREATE] = (nfsd4_enc)nfsd4_encode_create, 3531ad1060c8SJ. Bruce Fields [OP_DELEGPURGE] = (nfsd4_enc)nfsd4_encode_noop, 3532ad1060c8SJ. Bruce Fields [OP_DELEGRETURN] = (nfsd4_enc)nfsd4_encode_noop, 3533ad1060c8SJ. Bruce Fields [OP_GETATTR] = (nfsd4_enc)nfsd4_encode_getattr, 3534ad1060c8SJ. Bruce Fields [OP_GETFH] = (nfsd4_enc)nfsd4_encode_getfh, 3535ad1060c8SJ. Bruce Fields [OP_LINK] = (nfsd4_enc)nfsd4_encode_link, 3536ad1060c8SJ. Bruce Fields [OP_LOCK] = (nfsd4_enc)nfsd4_encode_lock, 3537ad1060c8SJ. Bruce Fields [OP_LOCKT] = (nfsd4_enc)nfsd4_encode_lockt, 3538ad1060c8SJ. Bruce Fields [OP_LOCKU] = (nfsd4_enc)nfsd4_encode_locku, 3539ad1060c8SJ. Bruce Fields [OP_LOOKUP] = (nfsd4_enc)nfsd4_encode_noop, 3540ad1060c8SJ. Bruce Fields [OP_LOOKUPP] = (nfsd4_enc)nfsd4_encode_noop, 3541ad1060c8SJ. Bruce Fields [OP_NVERIFY] = (nfsd4_enc)nfsd4_encode_noop, 3542ad1060c8SJ. Bruce Fields [OP_OPEN] = (nfsd4_enc)nfsd4_encode_open, 354384f09f46SBenny Halevy [OP_OPENATTR] = (nfsd4_enc)nfsd4_encode_noop, 3544ad1060c8SJ. Bruce Fields [OP_OPEN_CONFIRM] = (nfsd4_enc)nfsd4_encode_open_confirm, 3545ad1060c8SJ. Bruce Fields [OP_OPEN_DOWNGRADE] = (nfsd4_enc)nfsd4_encode_open_downgrade, 3546ad1060c8SJ. Bruce Fields [OP_PUTFH] = (nfsd4_enc)nfsd4_encode_noop, 3547ad1060c8SJ. Bruce Fields [OP_PUTPUBFH] = (nfsd4_enc)nfsd4_encode_noop, 3548ad1060c8SJ. Bruce Fields [OP_PUTROOTFH] = (nfsd4_enc)nfsd4_encode_noop, 3549ad1060c8SJ. Bruce Fields [OP_READ] = (nfsd4_enc)nfsd4_encode_read, 3550ad1060c8SJ. Bruce Fields [OP_READDIR] = (nfsd4_enc)nfsd4_encode_readdir, 3551ad1060c8SJ. Bruce Fields [OP_READLINK] = (nfsd4_enc)nfsd4_encode_readlink, 3552ad1060c8SJ. Bruce Fields [OP_REMOVE] = (nfsd4_enc)nfsd4_encode_remove, 3553ad1060c8SJ. Bruce Fields [OP_RENAME] = (nfsd4_enc)nfsd4_encode_rename, 3554ad1060c8SJ. Bruce Fields [OP_RENEW] = (nfsd4_enc)nfsd4_encode_noop, 3555ad1060c8SJ. Bruce Fields [OP_RESTOREFH] = (nfsd4_enc)nfsd4_encode_noop, 3556ad1060c8SJ. Bruce Fields [OP_SAVEFH] = (nfsd4_enc)nfsd4_encode_noop, 3557ad1060c8SJ. Bruce Fields [OP_SECINFO] = (nfsd4_enc)nfsd4_encode_secinfo, 3558ad1060c8SJ. Bruce Fields [OP_SETATTR] = (nfsd4_enc)nfsd4_encode_setattr, 3559ad1060c8SJ. Bruce Fields [OP_SETCLIENTID] = (nfsd4_enc)nfsd4_encode_setclientid, 3560ad1060c8SJ. Bruce Fields [OP_SETCLIENTID_CONFIRM] = (nfsd4_enc)nfsd4_encode_noop, 3561ad1060c8SJ. Bruce Fields [OP_VERIFY] = (nfsd4_enc)nfsd4_encode_noop, 3562ad1060c8SJ. Bruce Fields [OP_WRITE] = (nfsd4_enc)nfsd4_encode_write, 3563ad1060c8SJ. Bruce Fields [OP_RELEASE_LOCKOWNER] = (nfsd4_enc)nfsd4_encode_noop, 35642db134ebSAndy Adamson 35652db134ebSAndy Adamson /* NFSv4.1 operations */ 35662db134ebSAndy Adamson [OP_BACKCHANNEL_CTL] = (nfsd4_enc)nfsd4_encode_noop, 35671d1bc8f2SJ. Bruce Fields [OP_BIND_CONN_TO_SESSION] = (nfsd4_enc)nfsd4_encode_bind_conn_to_session, 35682db134ebSAndy Adamson [OP_EXCHANGE_ID] = (nfsd4_enc)nfsd4_encode_exchange_id, 35692db134ebSAndy Adamson [OP_CREATE_SESSION] = (nfsd4_enc)nfsd4_encode_create_session, 35702db134ebSAndy Adamson [OP_DESTROY_SESSION] = (nfsd4_enc)nfsd4_encode_destroy_session, 3571e1ca12dfSBryan Schumaker [OP_FREE_STATEID] = (nfsd4_enc)nfsd4_encode_free_stateid, 35722db134ebSAndy Adamson [OP_GET_DIR_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, 35732db134ebSAndy Adamson [OP_GETDEVICEINFO] = (nfsd4_enc)nfsd4_encode_noop, 35742db134ebSAndy Adamson [OP_GETDEVICELIST] = (nfsd4_enc)nfsd4_encode_noop, 35752db134ebSAndy Adamson [OP_LAYOUTCOMMIT] = (nfsd4_enc)nfsd4_encode_noop, 35762db134ebSAndy Adamson [OP_LAYOUTGET] = (nfsd4_enc)nfsd4_encode_noop, 35772db134ebSAndy Adamson [OP_LAYOUTRETURN] = (nfsd4_enc)nfsd4_encode_noop, 357822b6dee8SMi Jinlong [OP_SECINFO_NO_NAME] = (nfsd4_enc)nfsd4_encode_secinfo_no_name, 35792db134ebSAndy Adamson [OP_SEQUENCE] = (nfsd4_enc)nfsd4_encode_sequence, 35802db134ebSAndy Adamson [OP_SET_SSV] = (nfsd4_enc)nfsd4_encode_noop, 358117456804SBryan Schumaker [OP_TEST_STATEID] = (nfsd4_enc)nfsd4_encode_test_stateid, 35822db134ebSAndy Adamson [OP_WANT_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, 35832db134ebSAndy Adamson [OP_DESTROY_CLIENTID] = (nfsd4_enc)nfsd4_encode_noop, 35842db134ebSAndy Adamson [OP_RECLAIM_COMPLETE] = (nfsd4_enc)nfsd4_encode_noop, 3585695e12f8SBenny Halevy }; 3586695e12f8SBenny Halevy 3587496c262cSAndy Adamson /* 3588496c262cSAndy Adamson * Calculate the total amount of memory that the compound response has taken 358958e7b33aSMi Jinlong * after encoding the current operation with pad. 3590496c262cSAndy Adamson * 359158e7b33aSMi Jinlong * pad: if operation is non-idempotent, pad was calculate by op_rsize_bop() 359258e7b33aSMi Jinlong * which was specified at nfsd4_operation, else pad is zero. 3593496c262cSAndy Adamson * 359458e7b33aSMi Jinlong * Compare this length to the session se_fmaxresp_sz and se_fmaxresp_cached. 3595496c262cSAndy Adamson * 3596496c262cSAndy Adamson * Our se_fmaxresp_cached will always be a multiple of PAGE_SIZE, and so 3597496c262cSAndy Adamson * will be at least a page and will therefore hold the xdr_buf head. 3598496c262cSAndy Adamson */ 359957b7b43bSJ. Bruce Fields __be32 nfsd4_check_resp_size(struct nfsd4_compoundres *resp, u32 pad) 3600496c262cSAndy Adamson { 3601496c262cSAndy Adamson struct xdr_buf *xb = &resp->rqstp->rq_res; 3602496c262cSAndy Adamson struct nfsd4_session *session = NULL; 3603496c262cSAndy Adamson struct nfsd4_slot *slot = resp->cstate.slot; 360458e7b33aSMi Jinlong u32 length, tlen = 0; 3605496c262cSAndy Adamson 3606496c262cSAndy Adamson if (!nfsd4_has_session(&resp->cstate)) 360758e7b33aSMi Jinlong return 0; 3608496c262cSAndy Adamson 3609496c262cSAndy Adamson session = resp->cstate.session; 361058e7b33aSMi Jinlong if (session == NULL) 361158e7b33aSMi Jinlong return 0; 3612496c262cSAndy Adamson 3613496c262cSAndy Adamson if (xb->page_len == 0) { 3614496c262cSAndy Adamson length = (char *)resp->p - (char *)xb->head[0].iov_base + pad; 3615496c262cSAndy Adamson } else { 3616496c262cSAndy Adamson if (xb->tail[0].iov_base && xb->tail[0].iov_len > 0) 3617496c262cSAndy Adamson tlen = (char *)resp->p - (char *)xb->tail[0].iov_base; 3618496c262cSAndy Adamson 3619496c262cSAndy Adamson length = xb->head[0].iov_len + xb->page_len + tlen + pad; 3620496c262cSAndy Adamson } 3621496c262cSAndy Adamson dprintk("%s length %u, xb->page_len %u tlen %u pad %u\n", __func__, 3622496c262cSAndy Adamson length, xb->page_len, tlen, pad); 3623496c262cSAndy Adamson 362458e7b33aSMi Jinlong if (length > session->se_fchannel.maxresp_sz) 362558e7b33aSMi Jinlong return nfserr_rep_too_big; 362658e7b33aSMi Jinlong 362773e79482SJ. Bruce Fields if ((slot->sl_flags & NFSD4_SLOT_CACHETHIS) && 362858e7b33aSMi Jinlong length > session->se_fchannel.maxresp_cached) 3629496c262cSAndy Adamson return nfserr_rep_too_big_to_cache; 363058e7b33aSMi Jinlong 363158e7b33aSMi Jinlong return 0; 3632496c262cSAndy Adamson } 3633496c262cSAndy Adamson 36341da177e4SLinus Torvalds void 36351da177e4SLinus Torvalds nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op) 36361da177e4SLinus Torvalds { 36379411b1d4SJ. Bruce Fields struct nfs4_stateowner *so = resp->cstate.replay_owner; 36382ebbc012SAl Viro __be32 *statp; 3639bc749ca4SJ. Bruce Fields __be32 *p; 36401da177e4SLinus Torvalds 36411da177e4SLinus Torvalds RESERVE_SPACE(8); 36421da177e4SLinus Torvalds WRITE32(op->opnum); 36431da177e4SLinus Torvalds statp = p++; /* to be backfilled at the end */ 36441da177e4SLinus Torvalds ADJUST_ARGS(); 36451da177e4SLinus Torvalds 3646695e12f8SBenny Halevy if (op->opnum == OP_ILLEGAL) 3647695e12f8SBenny Halevy goto status; 3648695e12f8SBenny Halevy BUG_ON(op->opnum < 0 || op->opnum >= ARRAY_SIZE(nfsd4_enc_ops) || 3649695e12f8SBenny Halevy !nfsd4_enc_ops[op->opnum]); 3650695e12f8SBenny Halevy op->status = nfsd4_enc_ops[op->opnum](resp, op->status, &op->u); 3651496c262cSAndy Adamson /* nfsd4_check_drc_limit guarantees enough room for error status */ 365258e7b33aSMi Jinlong if (!op->status) 365358e7b33aSMi Jinlong op->status = nfsd4_check_resp_size(resp, 0); 36549411b1d4SJ. Bruce Fields if (so) { 36559411b1d4SJ. Bruce Fields so->so_replay.rp_status = op->status; 36569411b1d4SJ. Bruce Fields so->so_replay.rp_buflen = (char *)resp->p - (char *)(statp+1); 36579411b1d4SJ. Bruce Fields memcpy(so->so_replay.rp_buf, statp+1, so->so_replay.rp_buflen); 36589411b1d4SJ. Bruce Fields } 3659695e12f8SBenny Halevy status: 36601da177e4SLinus Torvalds /* 36611da177e4SLinus Torvalds * Note: We write the status directly, instead of using WRITE32(), 36621da177e4SLinus Torvalds * since it is already in network byte order. 36631da177e4SLinus Torvalds */ 36641da177e4SLinus Torvalds *statp = op->status; 36651da177e4SLinus Torvalds } 36661da177e4SLinus Torvalds 36671da177e4SLinus Torvalds /* 36681da177e4SLinus Torvalds * Encode the reply stored in the stateowner reply cache 36691da177e4SLinus Torvalds * 36701da177e4SLinus Torvalds * XDR note: do not encode rp->rp_buflen: the buffer contains the 36711da177e4SLinus Torvalds * previously sent already encoded operation. 36721da177e4SLinus Torvalds * 36731da177e4SLinus Torvalds * called with nfs4_lock_state() held 36741da177e4SLinus Torvalds */ 36751da177e4SLinus Torvalds void 36761da177e4SLinus Torvalds nfsd4_encode_replay(struct nfsd4_compoundres *resp, struct nfsd4_op *op) 36771da177e4SLinus Torvalds { 3678bc749ca4SJ. Bruce Fields __be32 *p; 36791da177e4SLinus Torvalds struct nfs4_replay *rp = op->replay; 36801da177e4SLinus Torvalds 36811da177e4SLinus Torvalds BUG_ON(!rp); 36821da177e4SLinus Torvalds 36831da177e4SLinus Torvalds RESERVE_SPACE(8); 36841da177e4SLinus Torvalds WRITE32(op->opnum); 36851da177e4SLinus Torvalds *p++ = rp->rp_status; /* already xdr'ed */ 36861da177e4SLinus Torvalds ADJUST_ARGS(); 36871da177e4SLinus Torvalds 36881da177e4SLinus Torvalds RESERVE_SPACE(rp->rp_buflen); 36891da177e4SLinus Torvalds WRITEMEM(rp->rp_buf, rp->rp_buflen); 36901da177e4SLinus Torvalds ADJUST_ARGS(); 36911da177e4SLinus Torvalds } 36921da177e4SLinus Torvalds 36931da177e4SLinus Torvalds int 36942ebbc012SAl Viro nfs4svc_encode_voidres(struct svc_rqst *rqstp, __be32 *p, void *dummy) 36951da177e4SLinus Torvalds { 36961da177e4SLinus Torvalds return xdr_ressize_check(rqstp, p); 36971da177e4SLinus Torvalds } 36981da177e4SLinus Torvalds 36993e98abffSJ. Bruce Fields int nfsd4_release_compoundargs(void *rq, __be32 *p, void *resp) 37001da177e4SLinus Torvalds { 37013e98abffSJ. Bruce Fields struct svc_rqst *rqstp = rq; 37023e98abffSJ. Bruce Fields struct nfsd4_compoundargs *args = rqstp->rq_argp; 37033e98abffSJ. Bruce Fields 37041da177e4SLinus Torvalds if (args->ops != args->iops) { 37051da177e4SLinus Torvalds kfree(args->ops); 37061da177e4SLinus Torvalds args->ops = args->iops; 37071da177e4SLinus Torvalds } 37081da177e4SLinus Torvalds kfree(args->tmpp); 37091da177e4SLinus Torvalds args->tmpp = NULL; 37101da177e4SLinus Torvalds while (args->to_free) { 37111da177e4SLinus Torvalds struct tmpbuf *tb = args->to_free; 37121da177e4SLinus Torvalds args->to_free = tb->next; 37131da177e4SLinus Torvalds tb->release(tb->buf); 37141da177e4SLinus Torvalds kfree(tb); 37151da177e4SLinus Torvalds } 37163e98abffSJ. Bruce Fields return 1; 37171da177e4SLinus Torvalds } 37181da177e4SLinus Torvalds 37191da177e4SLinus Torvalds int 37202ebbc012SAl Viro nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundargs *args) 37211da177e4SLinus Torvalds { 37221da177e4SLinus Torvalds args->p = p; 37231da177e4SLinus Torvalds args->end = rqstp->rq_arg.head[0].iov_base + rqstp->rq_arg.head[0].iov_len; 37241da177e4SLinus Torvalds args->pagelist = rqstp->rq_arg.pages; 37251da177e4SLinus Torvalds args->pagelen = rqstp->rq_arg.page_len; 37261da177e4SLinus Torvalds args->tmpp = NULL; 37271da177e4SLinus Torvalds args->to_free = NULL; 37281da177e4SLinus Torvalds args->ops = args->iops; 37291da177e4SLinus Torvalds args->rqstp = rqstp; 37301da177e4SLinus Torvalds 37313e98abffSJ. Bruce Fields return !nfsd4_decode_compound(args); 37321da177e4SLinus Torvalds } 37331da177e4SLinus Torvalds 37341da177e4SLinus Torvalds int 37352ebbc012SAl Viro nfs4svc_encode_compoundres(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundres *resp) 37361da177e4SLinus Torvalds { 37371da177e4SLinus Torvalds /* 37381da177e4SLinus Torvalds * All that remains is to write the tag and operation count... 37391da177e4SLinus Torvalds */ 3740557ce264SAndy Adamson struct nfsd4_compound_state *cs = &resp->cstate; 37411da177e4SLinus Torvalds struct kvec *iov; 37421da177e4SLinus Torvalds p = resp->tagp; 37431da177e4SLinus Torvalds *p++ = htonl(resp->taglen); 37441da177e4SLinus Torvalds memcpy(p, resp->tag, resp->taglen); 37451da177e4SLinus Torvalds p += XDR_QUADLEN(resp->taglen); 37461da177e4SLinus Torvalds *p++ = htonl(resp->opcnt); 37471da177e4SLinus Torvalds 37481da177e4SLinus Torvalds if (rqstp->rq_res.page_len) 37491da177e4SLinus Torvalds iov = &rqstp->rq_res.tail[0]; 37501da177e4SLinus Torvalds else 37511da177e4SLinus Torvalds iov = &rqstp->rq_res.head[0]; 37521da177e4SLinus Torvalds iov->iov_len = ((char*)resp->p) - (char*)iov->iov_base; 37531da177e4SLinus Torvalds BUG_ON(iov->iov_len > PAGE_SIZE); 375426c0c75eSJ. Bruce Fields if (nfsd4_has_session(cs)) { 375526c0c75eSJ. Bruce Fields if (cs->status != nfserr_replay_cache) { 3756da3846a2SAndy Adamson nfsd4_store_cache_entry(resp); 375773e79482SJ. Bruce Fields cs->slot->sl_flags &= ~NFSD4_SLOT_INUSE; 375826c0c75eSJ. Bruce Fields } 3759d7682988SBenny Halevy /* Renew the clientid on success and on replay */ 3760221a6876SJ. Bruce Fields put_client_renew(cs->session->se_client); 3761221a6876SJ. Bruce Fields nfsd4_put_session(cs->session); 3762da3846a2SAndy Adamson } 37631da177e4SLinus Torvalds return 1; 37641da177e4SLinus Torvalds } 37651da177e4SLinus Torvalds 37661da177e4SLinus Torvalds /* 37671da177e4SLinus Torvalds * Local variables: 37681da177e4SLinus Torvalds * c-basic-offset: 8 37691da177e4SLinus Torvalds * End: 37701da177e4SLinus Torvalds */ 3771