11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * fs/nfs/nfs4xdr.c 31da177e4SLinus Torvalds * 41da177e4SLinus Torvalds * Server-side XDR for NFSv4 51da177e4SLinus Torvalds * 61da177e4SLinus Torvalds * Copyright (c) 2002 The Regents of the University of Michigan. 71da177e4SLinus Torvalds * All rights reserved. 81da177e4SLinus Torvalds * 91da177e4SLinus Torvalds * Kendrick Smith <kmsmith@umich.edu> 101da177e4SLinus Torvalds * Andy Adamson <andros@umich.edu> 111da177e4SLinus Torvalds * 121da177e4SLinus Torvalds * Redistribution and use in source and binary forms, with or without 131da177e4SLinus Torvalds * modification, are permitted provided that the following conditions 141da177e4SLinus Torvalds * are met: 151da177e4SLinus Torvalds * 161da177e4SLinus Torvalds * 1. Redistributions of source code must retain the above copyright 171da177e4SLinus Torvalds * notice, this list of conditions and the following disclaimer. 181da177e4SLinus Torvalds * 2. Redistributions in binary form must reproduce the above copyright 191da177e4SLinus Torvalds * notice, this list of conditions and the following disclaimer in the 201da177e4SLinus Torvalds * documentation and/or other materials provided with the distribution. 211da177e4SLinus Torvalds * 3. Neither the name of the University nor the names of its 221da177e4SLinus Torvalds * contributors may be used to endorse or promote products derived 231da177e4SLinus Torvalds * from this software without specific prior written permission. 241da177e4SLinus Torvalds * 251da177e4SLinus Torvalds * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED 261da177e4SLinus Torvalds * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 271da177e4SLinus Torvalds * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 281da177e4SLinus Torvalds * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 291da177e4SLinus Torvalds * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 301da177e4SLinus Torvalds * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 311da177e4SLinus Torvalds * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 321da177e4SLinus Torvalds * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 331da177e4SLinus Torvalds * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 341da177e4SLinus Torvalds * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 351da177e4SLinus Torvalds * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 361da177e4SLinus Torvalds * 371da177e4SLinus Torvalds * TODO: Neil Brown made the following observation: We currently 381da177e4SLinus Torvalds * initially reserve NFSD_BUFSIZE space on the transmit queue and 391da177e4SLinus Torvalds * never release any of that until the request is complete. 401da177e4SLinus Torvalds * It would be good to calculate a new maximum response size while 411da177e4SLinus Torvalds * decoding the COMPOUND, and call svc_reserve with this number 421da177e4SLinus Torvalds * at the end of nfs4svc_decode_compoundargs. 431da177e4SLinus Torvalds */ 441da177e4SLinus Torvalds 451da177e4SLinus Torvalds #include <linux/param.h> 461da177e4SLinus Torvalds #include <linux/smp.h> 471da177e4SLinus Torvalds #include <linux/smp_lock.h> 481da177e4SLinus Torvalds #include <linux/fs.h> 491da177e4SLinus Torvalds #include <linux/namei.h> 501da177e4SLinus Torvalds #include <linux/vfs.h> 511da177e4SLinus Torvalds #include <linux/sunrpc/xdr.h> 521da177e4SLinus Torvalds #include <linux/sunrpc/svc.h> 531da177e4SLinus Torvalds #include <linux/sunrpc/clnt.h> 541da177e4SLinus Torvalds #include <linux/nfsd/nfsd.h> 551da177e4SLinus Torvalds #include <linux/nfsd/state.h> 561da177e4SLinus Torvalds #include <linux/nfsd/xdr4.h> 571da177e4SLinus Torvalds #include <linux/nfsd_idmap.h> 581da177e4SLinus Torvalds #include <linux/nfs4.h> 591da177e4SLinus Torvalds #include <linux/nfs4_acl.h> 601da177e4SLinus Torvalds 611da177e4SLinus Torvalds #define NFSDDBG_FACILITY NFSDDBG_XDR 621da177e4SLinus Torvalds 631da177e4SLinus Torvalds static int 641da177e4SLinus Torvalds check_filename(char *str, int len, int err) 651da177e4SLinus Torvalds { 661da177e4SLinus Torvalds int i; 671da177e4SLinus Torvalds 681da177e4SLinus Torvalds if (len == 0) 691da177e4SLinus Torvalds return nfserr_inval; 701da177e4SLinus Torvalds if (isdotent(str, len)) 711da177e4SLinus Torvalds return err; 721da177e4SLinus Torvalds for (i = 0; i < len; i++) 731da177e4SLinus Torvalds if (str[i] == '/') 741da177e4SLinus Torvalds return err; 751da177e4SLinus Torvalds return 0; 761da177e4SLinus Torvalds } 771da177e4SLinus Torvalds 781da177e4SLinus Torvalds /* 791da177e4SLinus Torvalds * START OF "GENERIC" DECODE ROUTINES. 801da177e4SLinus Torvalds * These may look a little ugly since they are imported from a "generic" 811da177e4SLinus Torvalds * set of XDR encode/decode routines which are intended to be shared by 821da177e4SLinus Torvalds * all of our NFSv4 implementations (OpenBSD, MacOS X...). 831da177e4SLinus Torvalds * 841da177e4SLinus Torvalds * If the pain of reading these is too great, it should be a straightforward 851da177e4SLinus Torvalds * task to translate them into Linux-specific versions which are more 861da177e4SLinus Torvalds * consistent with the style used in NFSv2/v3... 871da177e4SLinus Torvalds */ 881da177e4SLinus Torvalds #define DECODE_HEAD \ 891da177e4SLinus Torvalds u32 *p; \ 901da177e4SLinus Torvalds int status 911da177e4SLinus Torvalds #define DECODE_TAIL \ 921da177e4SLinus Torvalds status = 0; \ 931da177e4SLinus Torvalds out: \ 941da177e4SLinus Torvalds return status; \ 951da177e4SLinus Torvalds xdr_error: \ 961da177e4SLinus Torvalds printk(KERN_NOTICE "xdr error! (%s:%d)\n", __FILE__, __LINE__); \ 971da177e4SLinus Torvalds status = nfserr_bad_xdr; \ 981da177e4SLinus Torvalds goto out 991da177e4SLinus Torvalds 1001da177e4SLinus Torvalds #define READ32(x) (x) = ntohl(*p++) 1011da177e4SLinus Torvalds #define READ64(x) do { \ 1021da177e4SLinus Torvalds (x) = (u64)ntohl(*p++) << 32; \ 1031da177e4SLinus Torvalds (x) |= ntohl(*p++); \ 1041da177e4SLinus Torvalds } while (0) 1051da177e4SLinus Torvalds #define READTIME(x) do { \ 1061da177e4SLinus Torvalds p++; \ 1071da177e4SLinus Torvalds (x) = ntohl(*p++); \ 1081da177e4SLinus Torvalds p++; \ 1091da177e4SLinus Torvalds } while (0) 1101da177e4SLinus Torvalds #define READMEM(x,nbytes) do { \ 1111da177e4SLinus Torvalds x = (char *)p; \ 1121da177e4SLinus Torvalds p += XDR_QUADLEN(nbytes); \ 1131da177e4SLinus Torvalds } while (0) 1141da177e4SLinus Torvalds #define SAVEMEM(x,nbytes) do { \ 1151da177e4SLinus Torvalds if (!(x = (p==argp->tmp || p == argp->tmpp) ? \ 1161da177e4SLinus Torvalds savemem(argp, p, nbytes) : \ 1171da177e4SLinus Torvalds (char *)p)) { \ 1181da177e4SLinus Torvalds printk(KERN_NOTICE "xdr error! (%s:%d)\n", __FILE__, __LINE__); \ 1191da177e4SLinus Torvalds goto xdr_error; \ 1201da177e4SLinus Torvalds } \ 1211da177e4SLinus Torvalds p += XDR_QUADLEN(nbytes); \ 1221da177e4SLinus Torvalds } while (0) 1231da177e4SLinus Torvalds #define COPYMEM(x,nbytes) do { \ 1241da177e4SLinus Torvalds memcpy((x), p, nbytes); \ 1251da177e4SLinus Torvalds p += XDR_QUADLEN(nbytes); \ 1261da177e4SLinus Torvalds } while (0) 1271da177e4SLinus Torvalds 1281da177e4SLinus Torvalds /* READ_BUF, read_buf(): nbytes must be <= PAGE_SIZE */ 1291da177e4SLinus Torvalds #define READ_BUF(nbytes) do { \ 1301da177e4SLinus Torvalds if (nbytes <= (u32)((char *)argp->end - (char *)argp->p)) { \ 1311da177e4SLinus Torvalds p = argp->p; \ 1321da177e4SLinus Torvalds argp->p += XDR_QUADLEN(nbytes); \ 1331da177e4SLinus Torvalds } else if (!(p = read_buf(argp, nbytes))) { \ 1341da177e4SLinus Torvalds printk(KERN_NOTICE "xdr error! (%s:%d)\n", __FILE__, __LINE__); \ 1351da177e4SLinus Torvalds goto xdr_error; \ 1361da177e4SLinus Torvalds } \ 1371da177e4SLinus Torvalds } while (0) 1381da177e4SLinus Torvalds 139fd39ca9aSNeilBrown static u32 *read_buf(struct nfsd4_compoundargs *argp, int nbytes) 1401da177e4SLinus Torvalds { 1411da177e4SLinus Torvalds /* We want more bytes than seem to be available. 1421da177e4SLinus Torvalds * Maybe we need a new page, maybe we have just run out 1431da177e4SLinus Torvalds */ 1441da177e4SLinus Torvalds int avail = (char*)argp->end - (char*)argp->p; 1451da177e4SLinus Torvalds u32 *p; 1461da177e4SLinus Torvalds if (avail + argp->pagelen < nbytes) 1471da177e4SLinus Torvalds return NULL; 1481da177e4SLinus Torvalds if (avail + PAGE_SIZE < nbytes) /* need more than a page !! */ 1491da177e4SLinus Torvalds return NULL; 1501da177e4SLinus Torvalds /* ok, we can do it with the current plus the next page */ 1511da177e4SLinus Torvalds if (nbytes <= sizeof(argp->tmp)) 1521da177e4SLinus Torvalds p = argp->tmp; 1531da177e4SLinus Torvalds else { 1541da177e4SLinus Torvalds kfree(argp->tmpp); 1551da177e4SLinus Torvalds p = argp->tmpp = kmalloc(nbytes, GFP_KERNEL); 1561da177e4SLinus Torvalds if (!p) 1571da177e4SLinus Torvalds return NULL; 1581da177e4SLinus Torvalds 1591da177e4SLinus Torvalds } 1601da177e4SLinus Torvalds memcpy(p, argp->p, avail); 1611da177e4SLinus Torvalds /* step to next page */ 1621da177e4SLinus Torvalds argp->p = page_address(argp->pagelist[0]); 1631da177e4SLinus Torvalds argp->pagelist++; 1641da177e4SLinus Torvalds if (argp->pagelen < PAGE_SIZE) { 1651da177e4SLinus Torvalds argp->end = p + (argp->pagelen>>2); 1661da177e4SLinus Torvalds argp->pagelen = 0; 1671da177e4SLinus Torvalds } else { 1681da177e4SLinus Torvalds argp->end = p + (PAGE_SIZE>>2); 1691da177e4SLinus Torvalds argp->pagelen -= PAGE_SIZE; 1701da177e4SLinus Torvalds } 1711da177e4SLinus Torvalds memcpy(((char*)p)+avail, argp->p, (nbytes - avail)); 1721da177e4SLinus Torvalds argp->p += XDR_QUADLEN(nbytes - avail); 1731da177e4SLinus Torvalds return p; 1741da177e4SLinus Torvalds } 1751da177e4SLinus Torvalds 1761da177e4SLinus Torvalds static int 1771da177e4SLinus Torvalds defer_free(struct nfsd4_compoundargs *argp, 1781da177e4SLinus Torvalds void (*release)(const void *), void *p) 1791da177e4SLinus Torvalds { 1801da177e4SLinus Torvalds struct tmpbuf *tb; 1811da177e4SLinus Torvalds 1821da177e4SLinus Torvalds tb = kmalloc(sizeof(*tb), GFP_KERNEL); 1831da177e4SLinus Torvalds if (!tb) 1841da177e4SLinus Torvalds return -ENOMEM; 1851da177e4SLinus Torvalds tb->buf = p; 1861da177e4SLinus Torvalds tb->release = release; 1871da177e4SLinus Torvalds tb->next = argp->to_free; 1881da177e4SLinus Torvalds argp->to_free = tb; 1891da177e4SLinus Torvalds return 0; 1901da177e4SLinus Torvalds } 1911da177e4SLinus Torvalds 192fd39ca9aSNeilBrown static char *savemem(struct nfsd4_compoundargs *argp, u32 *p, int nbytes) 1931da177e4SLinus Torvalds { 1941da177e4SLinus Torvalds void *new = NULL; 1951da177e4SLinus Torvalds if (p == argp->tmp) { 1961da177e4SLinus Torvalds new = kmalloc(nbytes, GFP_KERNEL); 1971da177e4SLinus Torvalds if (!new) return NULL; 1981da177e4SLinus Torvalds p = new; 1991da177e4SLinus Torvalds memcpy(p, argp->tmp, nbytes); 2001da177e4SLinus Torvalds } else { 2011da177e4SLinus Torvalds if (p != argp->tmpp) 2021da177e4SLinus Torvalds BUG(); 2031da177e4SLinus Torvalds argp->tmpp = NULL; 2041da177e4SLinus Torvalds } 2051da177e4SLinus Torvalds if (defer_free(argp, kfree, p)) { 2061da177e4SLinus Torvalds kfree(new); 2071da177e4SLinus Torvalds return NULL; 2081da177e4SLinus Torvalds } else 2091da177e4SLinus Torvalds return (char *)p; 2101da177e4SLinus Torvalds } 2111da177e4SLinus Torvalds 2121da177e4SLinus Torvalds 2131da177e4SLinus Torvalds static int 2141da177e4SLinus Torvalds nfsd4_decode_bitmap(struct nfsd4_compoundargs *argp, u32 *bmval) 2151da177e4SLinus Torvalds { 2161da177e4SLinus Torvalds u32 bmlen; 2171da177e4SLinus Torvalds DECODE_HEAD; 2181da177e4SLinus Torvalds 2191da177e4SLinus Torvalds bmval[0] = 0; 2201da177e4SLinus Torvalds bmval[1] = 0; 2211da177e4SLinus Torvalds 2221da177e4SLinus Torvalds READ_BUF(4); 2231da177e4SLinus Torvalds READ32(bmlen); 2241da177e4SLinus Torvalds if (bmlen > 1000) 2251da177e4SLinus Torvalds goto xdr_error; 2261da177e4SLinus Torvalds 2271da177e4SLinus Torvalds READ_BUF(bmlen << 2); 2281da177e4SLinus Torvalds if (bmlen > 0) 2291da177e4SLinus Torvalds READ32(bmval[0]); 2301da177e4SLinus Torvalds if (bmlen > 1) 2311da177e4SLinus Torvalds READ32(bmval[1]); 2321da177e4SLinus Torvalds 2331da177e4SLinus Torvalds DECODE_TAIL; 2341da177e4SLinus Torvalds } 2351da177e4SLinus Torvalds 2361da177e4SLinus Torvalds static int 2371da177e4SLinus Torvalds nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, struct iattr *iattr, 2381da177e4SLinus Torvalds struct nfs4_acl **acl) 2391da177e4SLinus Torvalds { 2401da177e4SLinus Torvalds int expected_len, len = 0; 2411da177e4SLinus Torvalds u32 dummy32; 2421da177e4SLinus Torvalds char *buf; 2431da177e4SLinus Torvalds 2441da177e4SLinus Torvalds DECODE_HEAD; 2451da177e4SLinus Torvalds iattr->ia_valid = 0; 2461da177e4SLinus Torvalds if ((status = nfsd4_decode_bitmap(argp, bmval))) 2471da177e4SLinus Torvalds return status; 2481da177e4SLinus Torvalds 2491da177e4SLinus Torvalds /* 2501da177e4SLinus Torvalds * According to spec, unsupported attributes return ERR_NOTSUPP; 2511da177e4SLinus Torvalds * read-only attributes return ERR_INVAL. 2521da177e4SLinus Torvalds */ 2531da177e4SLinus Torvalds if ((bmval[0] & ~NFSD_SUPPORTED_ATTRS_WORD0) || (bmval[1] & ~NFSD_SUPPORTED_ATTRS_WORD1)) 2541da177e4SLinus Torvalds return nfserr_attrnotsupp; 2551da177e4SLinus Torvalds if ((bmval[0] & ~NFSD_WRITEABLE_ATTRS_WORD0) || (bmval[1] & ~NFSD_WRITEABLE_ATTRS_WORD1)) 2561da177e4SLinus Torvalds return nfserr_inval; 2571da177e4SLinus Torvalds 2581da177e4SLinus Torvalds READ_BUF(4); 2591da177e4SLinus Torvalds READ32(expected_len); 2601da177e4SLinus Torvalds 2611da177e4SLinus Torvalds if (bmval[0] & FATTR4_WORD0_SIZE) { 2621da177e4SLinus Torvalds READ_BUF(8); 2631da177e4SLinus Torvalds len += 8; 2641da177e4SLinus Torvalds READ64(iattr->ia_size); 2651da177e4SLinus Torvalds iattr->ia_valid |= ATTR_SIZE; 2661da177e4SLinus Torvalds } 2671da177e4SLinus Torvalds if (bmval[0] & FATTR4_WORD0_ACL) { 2681da177e4SLinus Torvalds int nace, i; 2691da177e4SLinus Torvalds struct nfs4_ace ace; 2701da177e4SLinus Torvalds 2711da177e4SLinus Torvalds READ_BUF(4); len += 4; 2721da177e4SLinus Torvalds READ32(nace); 2731da177e4SLinus Torvalds 2741da177e4SLinus Torvalds *acl = nfs4_acl_new(); 2751da177e4SLinus Torvalds if (*acl == NULL) { 2761da177e4SLinus Torvalds status = -ENOMEM; 2771da177e4SLinus Torvalds goto out_nfserr; 2781da177e4SLinus Torvalds } 2791da177e4SLinus Torvalds defer_free(argp, (void (*)(const void *))nfs4_acl_free, *acl); 2801da177e4SLinus Torvalds 2811da177e4SLinus Torvalds for (i = 0; i < nace; i++) { 2821da177e4SLinus Torvalds READ_BUF(16); len += 16; 2831da177e4SLinus Torvalds READ32(ace.type); 2841da177e4SLinus Torvalds READ32(ace.flag); 2851da177e4SLinus Torvalds READ32(ace.access_mask); 2861da177e4SLinus Torvalds READ32(dummy32); 2871da177e4SLinus Torvalds READ_BUF(dummy32); 2881da177e4SLinus Torvalds len += XDR_QUADLEN(dummy32) << 2; 2891da177e4SLinus Torvalds READMEM(buf, dummy32); 2901da177e4SLinus Torvalds ace.whotype = nfs4_acl_get_whotype(buf, dummy32); 2911da177e4SLinus Torvalds status = 0; 2921da177e4SLinus Torvalds if (ace.whotype != NFS4_ACL_WHO_NAMED) 2931da177e4SLinus Torvalds ace.who = 0; 2941da177e4SLinus Torvalds else if (ace.flag & NFS4_ACE_IDENTIFIER_GROUP) 2951da177e4SLinus Torvalds status = nfsd_map_name_to_gid(argp->rqstp, 2961da177e4SLinus Torvalds buf, dummy32, &ace.who); 2971da177e4SLinus Torvalds else 2981da177e4SLinus Torvalds status = nfsd_map_name_to_uid(argp->rqstp, 2991da177e4SLinus Torvalds buf, dummy32, &ace.who); 3001da177e4SLinus Torvalds if (status) 3011da177e4SLinus Torvalds goto out_nfserr; 302b905b7b0SNeilBrown status = nfs4_acl_add_ace(*acl, ace.type, ace.flag, 303b905b7b0SNeilBrown ace.access_mask, ace.whotype, ace.who); 304b905b7b0SNeilBrown if (status) 3051da177e4SLinus Torvalds goto out_nfserr; 3061da177e4SLinus Torvalds } 3071da177e4SLinus Torvalds } else 3081da177e4SLinus Torvalds *acl = NULL; 3091da177e4SLinus Torvalds if (bmval[1] & FATTR4_WORD1_MODE) { 3101da177e4SLinus Torvalds READ_BUF(4); 3111da177e4SLinus Torvalds len += 4; 3121da177e4SLinus Torvalds READ32(iattr->ia_mode); 3131da177e4SLinus Torvalds iattr->ia_mode &= (S_IFMT | S_IALLUGO); 3141da177e4SLinus Torvalds iattr->ia_valid |= ATTR_MODE; 3151da177e4SLinus Torvalds } 3161da177e4SLinus Torvalds if (bmval[1] & FATTR4_WORD1_OWNER) { 3171da177e4SLinus Torvalds READ_BUF(4); 3181da177e4SLinus Torvalds len += 4; 3191da177e4SLinus Torvalds READ32(dummy32); 3201da177e4SLinus Torvalds READ_BUF(dummy32); 3211da177e4SLinus Torvalds len += (XDR_QUADLEN(dummy32) << 2); 3221da177e4SLinus Torvalds READMEM(buf, dummy32); 3231da177e4SLinus Torvalds if ((status = nfsd_map_name_to_uid(argp->rqstp, buf, dummy32, &iattr->ia_uid))) 3241da177e4SLinus Torvalds goto out_nfserr; 3251da177e4SLinus Torvalds iattr->ia_valid |= ATTR_UID; 3261da177e4SLinus Torvalds } 3271da177e4SLinus Torvalds if (bmval[1] & FATTR4_WORD1_OWNER_GROUP) { 3281da177e4SLinus Torvalds READ_BUF(4); 3291da177e4SLinus Torvalds len += 4; 3301da177e4SLinus Torvalds READ32(dummy32); 3311da177e4SLinus Torvalds READ_BUF(dummy32); 3321da177e4SLinus Torvalds len += (XDR_QUADLEN(dummy32) << 2); 3331da177e4SLinus Torvalds READMEM(buf, dummy32); 3341da177e4SLinus Torvalds if ((status = nfsd_map_name_to_gid(argp->rqstp, buf, dummy32, &iattr->ia_gid))) 3351da177e4SLinus Torvalds goto out_nfserr; 3361da177e4SLinus Torvalds iattr->ia_valid |= ATTR_GID; 3371da177e4SLinus Torvalds } 3381da177e4SLinus Torvalds if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) { 3391da177e4SLinus Torvalds READ_BUF(4); 3401da177e4SLinus Torvalds len += 4; 3411da177e4SLinus Torvalds READ32(dummy32); 3421da177e4SLinus Torvalds switch (dummy32) { 3431da177e4SLinus Torvalds case NFS4_SET_TO_CLIENT_TIME: 3441da177e4SLinus Torvalds /* We require the high 32 bits of 'seconds' to be 0, and we ignore 3451da177e4SLinus Torvalds all 32 bits of 'nseconds'. */ 3461da177e4SLinus Torvalds READ_BUF(12); 3471da177e4SLinus Torvalds len += 12; 3481da177e4SLinus Torvalds READ32(dummy32); 3491da177e4SLinus Torvalds if (dummy32) 3501da177e4SLinus Torvalds return nfserr_inval; 3511da177e4SLinus Torvalds READ32(iattr->ia_atime.tv_sec); 3521da177e4SLinus Torvalds READ32(iattr->ia_atime.tv_nsec); 3531da177e4SLinus Torvalds if (iattr->ia_atime.tv_nsec >= (u32)1000000000) 3541da177e4SLinus Torvalds return nfserr_inval; 3551da177e4SLinus Torvalds iattr->ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET); 3561da177e4SLinus Torvalds break; 3571da177e4SLinus Torvalds case NFS4_SET_TO_SERVER_TIME: 3581da177e4SLinus Torvalds iattr->ia_valid |= ATTR_ATIME; 3591da177e4SLinus Torvalds break; 3601da177e4SLinus Torvalds default: 3611da177e4SLinus Torvalds goto xdr_error; 3621da177e4SLinus Torvalds } 3631da177e4SLinus Torvalds } 3641da177e4SLinus Torvalds if (bmval[1] & FATTR4_WORD1_TIME_METADATA) { 3651da177e4SLinus Torvalds /* We require the high 32 bits of 'seconds' to be 0, and we ignore 3661da177e4SLinus Torvalds all 32 bits of 'nseconds'. */ 3671da177e4SLinus Torvalds READ_BUF(12); 3681da177e4SLinus Torvalds len += 12; 3691da177e4SLinus Torvalds READ32(dummy32); 3701da177e4SLinus Torvalds if (dummy32) 3711da177e4SLinus Torvalds return nfserr_inval; 3721da177e4SLinus Torvalds READ32(iattr->ia_ctime.tv_sec); 3731da177e4SLinus Torvalds READ32(iattr->ia_ctime.tv_nsec); 3741da177e4SLinus Torvalds if (iattr->ia_ctime.tv_nsec >= (u32)1000000000) 3751da177e4SLinus Torvalds return nfserr_inval; 3761da177e4SLinus Torvalds iattr->ia_valid |= ATTR_CTIME; 3771da177e4SLinus Torvalds } 3781da177e4SLinus Torvalds if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) { 3791da177e4SLinus Torvalds READ_BUF(4); 3801da177e4SLinus Torvalds len += 4; 3811da177e4SLinus Torvalds READ32(dummy32); 3821da177e4SLinus Torvalds switch (dummy32) { 3831da177e4SLinus Torvalds case NFS4_SET_TO_CLIENT_TIME: 3841da177e4SLinus Torvalds /* We require the high 32 bits of 'seconds' to be 0, and we ignore 3851da177e4SLinus Torvalds all 32 bits of 'nseconds'. */ 3861da177e4SLinus Torvalds READ_BUF(12); 3871da177e4SLinus Torvalds len += 12; 3881da177e4SLinus Torvalds READ32(dummy32); 3891da177e4SLinus Torvalds if (dummy32) 3901da177e4SLinus Torvalds return nfserr_inval; 3911da177e4SLinus Torvalds READ32(iattr->ia_mtime.tv_sec); 3921da177e4SLinus Torvalds READ32(iattr->ia_mtime.tv_nsec); 3931da177e4SLinus Torvalds if (iattr->ia_mtime.tv_nsec >= (u32)1000000000) 3941da177e4SLinus Torvalds return nfserr_inval; 3951da177e4SLinus Torvalds iattr->ia_valid |= (ATTR_MTIME | ATTR_MTIME_SET); 3961da177e4SLinus Torvalds break; 3971da177e4SLinus Torvalds case NFS4_SET_TO_SERVER_TIME: 3981da177e4SLinus Torvalds iattr->ia_valid |= ATTR_MTIME; 3991da177e4SLinus Torvalds break; 4001da177e4SLinus Torvalds default: 4011da177e4SLinus Torvalds goto xdr_error; 4021da177e4SLinus Torvalds } 4031da177e4SLinus Torvalds } 4041da177e4SLinus Torvalds if (len != expected_len) 4051da177e4SLinus Torvalds goto xdr_error; 4061da177e4SLinus Torvalds 4071da177e4SLinus Torvalds DECODE_TAIL; 4081da177e4SLinus Torvalds 4091da177e4SLinus Torvalds out_nfserr: 4101da177e4SLinus Torvalds status = nfserrno(status); 4111da177e4SLinus Torvalds goto out; 4121da177e4SLinus Torvalds } 4131da177e4SLinus Torvalds 4141da177e4SLinus Torvalds static int 4151da177e4SLinus Torvalds nfsd4_decode_access(struct nfsd4_compoundargs *argp, struct nfsd4_access *access) 4161da177e4SLinus Torvalds { 4171da177e4SLinus Torvalds DECODE_HEAD; 4181da177e4SLinus Torvalds 4191da177e4SLinus Torvalds READ_BUF(4); 4201da177e4SLinus Torvalds READ32(access->ac_req_access); 4211da177e4SLinus Torvalds 4221da177e4SLinus Torvalds DECODE_TAIL; 4231da177e4SLinus Torvalds } 4241da177e4SLinus Torvalds 4251da177e4SLinus Torvalds static int 4261da177e4SLinus Torvalds nfsd4_decode_close(struct nfsd4_compoundargs *argp, struct nfsd4_close *close) 4271da177e4SLinus Torvalds { 4281da177e4SLinus Torvalds DECODE_HEAD; 4291da177e4SLinus Torvalds 4301da177e4SLinus Torvalds close->cl_stateowner = NULL; 4311da177e4SLinus Torvalds READ_BUF(4 + sizeof(stateid_t)); 4321da177e4SLinus Torvalds READ32(close->cl_seqid); 4331da177e4SLinus Torvalds READ32(close->cl_stateid.si_generation); 4341da177e4SLinus Torvalds COPYMEM(&close->cl_stateid.si_opaque, sizeof(stateid_opaque_t)); 4351da177e4SLinus Torvalds 4361da177e4SLinus Torvalds DECODE_TAIL; 4371da177e4SLinus Torvalds } 4381da177e4SLinus Torvalds 4391da177e4SLinus Torvalds 4401da177e4SLinus Torvalds static int 4411da177e4SLinus Torvalds nfsd4_decode_commit(struct nfsd4_compoundargs *argp, struct nfsd4_commit *commit) 4421da177e4SLinus Torvalds { 4431da177e4SLinus Torvalds DECODE_HEAD; 4441da177e4SLinus Torvalds 4451da177e4SLinus Torvalds READ_BUF(12); 4461da177e4SLinus Torvalds READ64(commit->co_offset); 4471da177e4SLinus Torvalds READ32(commit->co_count); 4481da177e4SLinus Torvalds 4491da177e4SLinus Torvalds DECODE_TAIL; 4501da177e4SLinus Torvalds } 4511da177e4SLinus Torvalds 4521da177e4SLinus Torvalds static int 4531da177e4SLinus Torvalds nfsd4_decode_create(struct nfsd4_compoundargs *argp, struct nfsd4_create *create) 4541da177e4SLinus Torvalds { 4551da177e4SLinus Torvalds DECODE_HEAD; 4561da177e4SLinus Torvalds 4571da177e4SLinus Torvalds READ_BUF(4); 4581da177e4SLinus Torvalds READ32(create->cr_type); 4591da177e4SLinus Torvalds switch (create->cr_type) { 4601da177e4SLinus Torvalds case NF4LNK: 4611da177e4SLinus Torvalds READ_BUF(4); 4621da177e4SLinus Torvalds READ32(create->cr_linklen); 4631da177e4SLinus Torvalds READ_BUF(create->cr_linklen); 4641da177e4SLinus Torvalds SAVEMEM(create->cr_linkname, create->cr_linklen); 4651da177e4SLinus Torvalds break; 4661da177e4SLinus Torvalds case NF4BLK: 4671da177e4SLinus Torvalds case NF4CHR: 4681da177e4SLinus Torvalds READ_BUF(8); 4691da177e4SLinus Torvalds READ32(create->cr_specdata1); 4701da177e4SLinus Torvalds READ32(create->cr_specdata2); 4711da177e4SLinus Torvalds break; 4721da177e4SLinus Torvalds case NF4SOCK: 4731da177e4SLinus Torvalds case NF4FIFO: 4741da177e4SLinus Torvalds case NF4DIR: 4751da177e4SLinus Torvalds default: 4761da177e4SLinus Torvalds break; 4771da177e4SLinus Torvalds } 4781da177e4SLinus Torvalds 4791da177e4SLinus Torvalds READ_BUF(4); 4801da177e4SLinus Torvalds READ32(create->cr_namelen); 4811da177e4SLinus Torvalds READ_BUF(create->cr_namelen); 4821da177e4SLinus Torvalds SAVEMEM(create->cr_name, create->cr_namelen); 4831da177e4SLinus Torvalds if ((status = check_filename(create->cr_name, create->cr_namelen, nfserr_inval))) 4841da177e4SLinus Torvalds return status; 4851da177e4SLinus Torvalds 4861da177e4SLinus Torvalds if ((status = nfsd4_decode_fattr(argp, create->cr_bmval, &create->cr_iattr, &create->cr_acl))) 4871da177e4SLinus Torvalds goto out; 4881da177e4SLinus Torvalds 4891da177e4SLinus Torvalds DECODE_TAIL; 4901da177e4SLinus Torvalds } 4911da177e4SLinus Torvalds 4921da177e4SLinus Torvalds static inline int 4931da177e4SLinus Torvalds nfsd4_decode_delegreturn(struct nfsd4_compoundargs *argp, struct nfsd4_delegreturn *dr) 4941da177e4SLinus Torvalds { 4951da177e4SLinus Torvalds DECODE_HEAD; 4961da177e4SLinus Torvalds 4971da177e4SLinus Torvalds READ_BUF(sizeof(stateid_t)); 4981da177e4SLinus Torvalds READ32(dr->dr_stateid.si_generation); 4991da177e4SLinus Torvalds COPYMEM(&dr->dr_stateid.si_opaque, sizeof(stateid_opaque_t)); 5001da177e4SLinus Torvalds 5011da177e4SLinus Torvalds DECODE_TAIL; 5021da177e4SLinus Torvalds } 5031da177e4SLinus Torvalds 5041da177e4SLinus Torvalds static inline int 5051da177e4SLinus Torvalds nfsd4_decode_getattr(struct nfsd4_compoundargs *argp, struct nfsd4_getattr *getattr) 5061da177e4SLinus Torvalds { 5071da177e4SLinus Torvalds return nfsd4_decode_bitmap(argp, getattr->ga_bmval); 5081da177e4SLinus Torvalds } 5091da177e4SLinus Torvalds 5101da177e4SLinus Torvalds static int 5111da177e4SLinus Torvalds nfsd4_decode_link(struct nfsd4_compoundargs *argp, struct nfsd4_link *link) 5121da177e4SLinus Torvalds { 5131da177e4SLinus Torvalds DECODE_HEAD; 5141da177e4SLinus Torvalds 5151da177e4SLinus Torvalds READ_BUF(4); 5161da177e4SLinus Torvalds READ32(link->li_namelen); 5171da177e4SLinus Torvalds READ_BUF(link->li_namelen); 5181da177e4SLinus Torvalds SAVEMEM(link->li_name, link->li_namelen); 5191da177e4SLinus Torvalds if ((status = check_filename(link->li_name, link->li_namelen, nfserr_inval))) 5201da177e4SLinus Torvalds return status; 5211da177e4SLinus Torvalds 5221da177e4SLinus Torvalds DECODE_TAIL; 5231da177e4SLinus Torvalds } 5241da177e4SLinus Torvalds 5251da177e4SLinus Torvalds static int 5261da177e4SLinus Torvalds nfsd4_decode_lock(struct nfsd4_compoundargs *argp, struct nfsd4_lock *lock) 5271da177e4SLinus Torvalds { 5281da177e4SLinus Torvalds DECODE_HEAD; 5291da177e4SLinus Torvalds 5303a65588aSJ. Bruce Fields lock->lk_replay_owner = NULL; 5311da177e4SLinus Torvalds /* 5321da177e4SLinus Torvalds * type, reclaim(boolean), offset, length, new_lock_owner(boolean) 5331da177e4SLinus Torvalds */ 5341da177e4SLinus Torvalds READ_BUF(28); 5351da177e4SLinus Torvalds READ32(lock->lk_type); 5361da177e4SLinus Torvalds if ((lock->lk_type < NFS4_READ_LT) || (lock->lk_type > NFS4_WRITEW_LT)) 5371da177e4SLinus Torvalds goto xdr_error; 5381da177e4SLinus Torvalds READ32(lock->lk_reclaim); 5391da177e4SLinus Torvalds READ64(lock->lk_offset); 5401da177e4SLinus Torvalds READ64(lock->lk_length); 5411da177e4SLinus Torvalds READ32(lock->lk_is_new); 5421da177e4SLinus Torvalds 5431da177e4SLinus Torvalds if (lock->lk_is_new) { 5441da177e4SLinus Torvalds READ_BUF(36); 5451da177e4SLinus Torvalds READ32(lock->lk_new_open_seqid); 5461da177e4SLinus Torvalds READ32(lock->lk_new_open_stateid.si_generation); 5471da177e4SLinus Torvalds 5481da177e4SLinus Torvalds COPYMEM(&lock->lk_new_open_stateid.si_opaque, sizeof(stateid_opaque_t)); 5491da177e4SLinus Torvalds READ32(lock->lk_new_lock_seqid); 5501da177e4SLinus Torvalds COPYMEM(&lock->lk_new_clientid, sizeof(clientid_t)); 5511da177e4SLinus Torvalds READ32(lock->lk_new_owner.len); 5521da177e4SLinus Torvalds READ_BUF(lock->lk_new_owner.len); 5531da177e4SLinus Torvalds READMEM(lock->lk_new_owner.data, lock->lk_new_owner.len); 5541da177e4SLinus Torvalds } else { 5551da177e4SLinus Torvalds READ_BUF(20); 5561da177e4SLinus Torvalds READ32(lock->lk_old_lock_stateid.si_generation); 5571da177e4SLinus Torvalds COPYMEM(&lock->lk_old_lock_stateid.si_opaque, sizeof(stateid_opaque_t)); 5581da177e4SLinus Torvalds READ32(lock->lk_old_lock_seqid); 5591da177e4SLinus Torvalds } 5601da177e4SLinus Torvalds 5611da177e4SLinus Torvalds DECODE_TAIL; 5621da177e4SLinus Torvalds } 5631da177e4SLinus Torvalds 5641da177e4SLinus Torvalds static int 5651da177e4SLinus Torvalds nfsd4_decode_lockt(struct nfsd4_compoundargs *argp, struct nfsd4_lockt *lockt) 5661da177e4SLinus Torvalds { 5671da177e4SLinus Torvalds DECODE_HEAD; 5681da177e4SLinus Torvalds 5691da177e4SLinus Torvalds READ_BUF(32); 5701da177e4SLinus Torvalds READ32(lockt->lt_type); 5711da177e4SLinus Torvalds if((lockt->lt_type < NFS4_READ_LT) || (lockt->lt_type > NFS4_WRITEW_LT)) 5721da177e4SLinus Torvalds goto xdr_error; 5731da177e4SLinus Torvalds READ64(lockt->lt_offset); 5741da177e4SLinus Torvalds READ64(lockt->lt_length); 5751da177e4SLinus Torvalds COPYMEM(&lockt->lt_clientid, 8); 5761da177e4SLinus Torvalds READ32(lockt->lt_owner.len); 5771da177e4SLinus Torvalds READ_BUF(lockt->lt_owner.len); 5781da177e4SLinus Torvalds READMEM(lockt->lt_owner.data, lockt->lt_owner.len); 5791da177e4SLinus Torvalds 5801da177e4SLinus Torvalds DECODE_TAIL; 5811da177e4SLinus Torvalds } 5821da177e4SLinus Torvalds 5831da177e4SLinus Torvalds static int 5841da177e4SLinus Torvalds nfsd4_decode_locku(struct nfsd4_compoundargs *argp, struct nfsd4_locku *locku) 5851da177e4SLinus Torvalds { 5861da177e4SLinus Torvalds DECODE_HEAD; 5871da177e4SLinus Torvalds 5881da177e4SLinus Torvalds locku->lu_stateowner = NULL; 5891da177e4SLinus Torvalds READ_BUF(24 + sizeof(stateid_t)); 5901da177e4SLinus Torvalds READ32(locku->lu_type); 5911da177e4SLinus Torvalds if ((locku->lu_type < NFS4_READ_LT) || (locku->lu_type > NFS4_WRITEW_LT)) 5921da177e4SLinus Torvalds goto xdr_error; 5931da177e4SLinus Torvalds READ32(locku->lu_seqid); 5941da177e4SLinus Torvalds READ32(locku->lu_stateid.si_generation); 5951da177e4SLinus Torvalds COPYMEM(&locku->lu_stateid.si_opaque, sizeof(stateid_opaque_t)); 5961da177e4SLinus Torvalds READ64(locku->lu_offset); 5971da177e4SLinus Torvalds READ64(locku->lu_length); 5981da177e4SLinus Torvalds 5991da177e4SLinus Torvalds DECODE_TAIL; 6001da177e4SLinus Torvalds } 6011da177e4SLinus Torvalds 6021da177e4SLinus Torvalds static int 6031da177e4SLinus Torvalds nfsd4_decode_lookup(struct nfsd4_compoundargs *argp, struct nfsd4_lookup *lookup) 6041da177e4SLinus Torvalds { 6051da177e4SLinus Torvalds DECODE_HEAD; 6061da177e4SLinus Torvalds 6071da177e4SLinus Torvalds READ_BUF(4); 6081da177e4SLinus Torvalds READ32(lookup->lo_len); 6091da177e4SLinus Torvalds READ_BUF(lookup->lo_len); 6101da177e4SLinus Torvalds SAVEMEM(lookup->lo_name, lookup->lo_len); 6111da177e4SLinus Torvalds if ((status = check_filename(lookup->lo_name, lookup->lo_len, nfserr_noent))) 6121da177e4SLinus Torvalds return status; 6131da177e4SLinus Torvalds 6141da177e4SLinus Torvalds DECODE_TAIL; 6151da177e4SLinus Torvalds } 6161da177e4SLinus Torvalds 6171da177e4SLinus Torvalds static int 6181da177e4SLinus Torvalds nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open) 6191da177e4SLinus Torvalds { 6201da177e4SLinus Torvalds DECODE_HEAD; 6211da177e4SLinus Torvalds 6221da177e4SLinus Torvalds memset(open->op_bmval, 0, sizeof(open->op_bmval)); 6231da177e4SLinus Torvalds open->op_iattr.ia_valid = 0; 6241da177e4SLinus Torvalds open->op_stateowner = NULL; 6251da177e4SLinus Torvalds 6261da177e4SLinus Torvalds /* seqid, share_access, share_deny, clientid, ownerlen */ 6271da177e4SLinus Torvalds READ_BUF(16 + sizeof(clientid_t)); 6281da177e4SLinus Torvalds READ32(open->op_seqid); 6291da177e4SLinus Torvalds READ32(open->op_share_access); 6301da177e4SLinus Torvalds READ32(open->op_share_deny); 6311da177e4SLinus Torvalds COPYMEM(&open->op_clientid, sizeof(clientid_t)); 6321da177e4SLinus Torvalds READ32(open->op_owner.len); 6331da177e4SLinus Torvalds 6341da177e4SLinus Torvalds /* owner, open_flag */ 6351da177e4SLinus Torvalds READ_BUF(open->op_owner.len + 4); 6361da177e4SLinus Torvalds SAVEMEM(open->op_owner.data, open->op_owner.len); 6371da177e4SLinus Torvalds READ32(open->op_create); 6381da177e4SLinus Torvalds switch (open->op_create) { 6391da177e4SLinus Torvalds case NFS4_OPEN_NOCREATE: 6401da177e4SLinus Torvalds break; 6411da177e4SLinus Torvalds case NFS4_OPEN_CREATE: 6421da177e4SLinus Torvalds READ_BUF(4); 6431da177e4SLinus Torvalds READ32(open->op_createmode); 6441da177e4SLinus Torvalds switch (open->op_createmode) { 6451da177e4SLinus Torvalds case NFS4_CREATE_UNCHECKED: 6461da177e4SLinus Torvalds case NFS4_CREATE_GUARDED: 6471da177e4SLinus Torvalds if ((status = nfsd4_decode_fattr(argp, open->op_bmval, &open->op_iattr, &open->op_acl))) 6481da177e4SLinus Torvalds goto out; 6491da177e4SLinus Torvalds break; 6501da177e4SLinus Torvalds case NFS4_CREATE_EXCLUSIVE: 6511da177e4SLinus Torvalds READ_BUF(8); 6521da177e4SLinus Torvalds COPYMEM(open->op_verf.data, 8); 6531da177e4SLinus Torvalds break; 6541da177e4SLinus Torvalds default: 6551da177e4SLinus Torvalds goto xdr_error; 6561da177e4SLinus Torvalds } 6571da177e4SLinus Torvalds break; 6581da177e4SLinus Torvalds default: 6591da177e4SLinus Torvalds goto xdr_error; 6601da177e4SLinus Torvalds } 6611da177e4SLinus Torvalds 6621da177e4SLinus Torvalds /* open_claim */ 6631da177e4SLinus Torvalds READ_BUF(4); 6641da177e4SLinus Torvalds READ32(open->op_claim_type); 6651da177e4SLinus Torvalds switch (open->op_claim_type) { 6661da177e4SLinus Torvalds case NFS4_OPEN_CLAIM_NULL: 6671da177e4SLinus Torvalds case NFS4_OPEN_CLAIM_DELEGATE_PREV: 6681da177e4SLinus Torvalds READ_BUF(4); 6691da177e4SLinus Torvalds READ32(open->op_fname.len); 6701da177e4SLinus Torvalds READ_BUF(open->op_fname.len); 6711da177e4SLinus Torvalds SAVEMEM(open->op_fname.data, open->op_fname.len); 6721da177e4SLinus Torvalds if ((status = check_filename(open->op_fname.data, open->op_fname.len, nfserr_inval))) 6731da177e4SLinus Torvalds return status; 6741da177e4SLinus Torvalds break; 6751da177e4SLinus Torvalds case NFS4_OPEN_CLAIM_PREVIOUS: 6761da177e4SLinus Torvalds READ_BUF(4); 6771da177e4SLinus Torvalds READ32(open->op_delegate_type); 6781da177e4SLinus Torvalds break; 6791da177e4SLinus Torvalds case NFS4_OPEN_CLAIM_DELEGATE_CUR: 6801da177e4SLinus Torvalds READ_BUF(sizeof(stateid_t) + 4); 6811da177e4SLinus Torvalds COPYMEM(&open->op_delegate_stateid, sizeof(stateid_t)); 6821da177e4SLinus Torvalds READ32(open->op_fname.len); 6831da177e4SLinus Torvalds READ_BUF(open->op_fname.len); 6841da177e4SLinus Torvalds SAVEMEM(open->op_fname.data, open->op_fname.len); 6851da177e4SLinus Torvalds if ((status = check_filename(open->op_fname.data, open->op_fname.len, nfserr_inval))) 6861da177e4SLinus Torvalds return status; 6871da177e4SLinus Torvalds break; 6881da177e4SLinus Torvalds default: 6891da177e4SLinus Torvalds goto xdr_error; 6901da177e4SLinus Torvalds } 6911da177e4SLinus Torvalds 6921da177e4SLinus Torvalds DECODE_TAIL; 6931da177e4SLinus Torvalds } 6941da177e4SLinus Torvalds 6951da177e4SLinus Torvalds static int 6961da177e4SLinus Torvalds nfsd4_decode_open_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_open_confirm *open_conf) 6971da177e4SLinus Torvalds { 6981da177e4SLinus Torvalds DECODE_HEAD; 6991da177e4SLinus Torvalds 7001da177e4SLinus Torvalds open_conf->oc_stateowner = NULL; 7011da177e4SLinus Torvalds READ_BUF(4 + sizeof(stateid_t)); 7021da177e4SLinus Torvalds READ32(open_conf->oc_req_stateid.si_generation); 7031da177e4SLinus Torvalds COPYMEM(&open_conf->oc_req_stateid.si_opaque, sizeof(stateid_opaque_t)); 7041da177e4SLinus Torvalds READ32(open_conf->oc_seqid); 7051da177e4SLinus Torvalds 7061da177e4SLinus Torvalds DECODE_TAIL; 7071da177e4SLinus Torvalds } 7081da177e4SLinus Torvalds 7091da177e4SLinus Torvalds static int 7101da177e4SLinus Torvalds nfsd4_decode_open_downgrade(struct nfsd4_compoundargs *argp, struct nfsd4_open_downgrade *open_down) 7111da177e4SLinus Torvalds { 7121da177e4SLinus Torvalds DECODE_HEAD; 7131da177e4SLinus Torvalds 7141da177e4SLinus Torvalds open_down->od_stateowner = NULL; 7151da177e4SLinus Torvalds READ_BUF(12 + sizeof(stateid_t)); 7161da177e4SLinus Torvalds READ32(open_down->od_stateid.si_generation); 7171da177e4SLinus Torvalds COPYMEM(&open_down->od_stateid.si_opaque, sizeof(stateid_opaque_t)); 7181da177e4SLinus Torvalds READ32(open_down->od_seqid); 7191da177e4SLinus Torvalds READ32(open_down->od_share_access); 7201da177e4SLinus Torvalds READ32(open_down->od_share_deny); 7211da177e4SLinus Torvalds 7221da177e4SLinus Torvalds DECODE_TAIL; 7231da177e4SLinus Torvalds } 7241da177e4SLinus Torvalds 7251da177e4SLinus Torvalds static int 7261da177e4SLinus Torvalds nfsd4_decode_putfh(struct nfsd4_compoundargs *argp, struct nfsd4_putfh *putfh) 7271da177e4SLinus Torvalds { 7281da177e4SLinus Torvalds DECODE_HEAD; 7291da177e4SLinus Torvalds 7301da177e4SLinus Torvalds READ_BUF(4); 7311da177e4SLinus Torvalds READ32(putfh->pf_fhlen); 7321da177e4SLinus Torvalds if (putfh->pf_fhlen > NFS4_FHSIZE) 7331da177e4SLinus Torvalds goto xdr_error; 7341da177e4SLinus Torvalds READ_BUF(putfh->pf_fhlen); 7351da177e4SLinus Torvalds SAVEMEM(putfh->pf_fhval, putfh->pf_fhlen); 7361da177e4SLinus Torvalds 7371da177e4SLinus Torvalds DECODE_TAIL; 7381da177e4SLinus Torvalds } 7391da177e4SLinus Torvalds 7401da177e4SLinus Torvalds static int 7411da177e4SLinus Torvalds nfsd4_decode_read(struct nfsd4_compoundargs *argp, struct nfsd4_read *read) 7421da177e4SLinus Torvalds { 7431da177e4SLinus Torvalds DECODE_HEAD; 7441da177e4SLinus Torvalds 7451da177e4SLinus Torvalds READ_BUF(sizeof(stateid_t) + 12); 7461da177e4SLinus Torvalds READ32(read->rd_stateid.si_generation); 7471da177e4SLinus Torvalds COPYMEM(&read->rd_stateid.si_opaque, sizeof(stateid_opaque_t)); 7481da177e4SLinus Torvalds READ64(read->rd_offset); 7491da177e4SLinus Torvalds READ32(read->rd_length); 7501da177e4SLinus Torvalds 7511da177e4SLinus Torvalds DECODE_TAIL; 7521da177e4SLinus Torvalds } 7531da177e4SLinus Torvalds 7541da177e4SLinus Torvalds static int 7551da177e4SLinus Torvalds nfsd4_decode_readdir(struct nfsd4_compoundargs *argp, struct nfsd4_readdir *readdir) 7561da177e4SLinus Torvalds { 7571da177e4SLinus Torvalds DECODE_HEAD; 7581da177e4SLinus Torvalds 7591da177e4SLinus Torvalds READ_BUF(24); 7601da177e4SLinus Torvalds READ64(readdir->rd_cookie); 7611da177e4SLinus Torvalds COPYMEM(readdir->rd_verf.data, sizeof(readdir->rd_verf.data)); 7621da177e4SLinus Torvalds READ32(readdir->rd_dircount); /* just in case you needed a useless field... */ 7631da177e4SLinus Torvalds READ32(readdir->rd_maxcount); 7641da177e4SLinus Torvalds if ((status = nfsd4_decode_bitmap(argp, readdir->rd_bmval))) 7651da177e4SLinus Torvalds goto out; 7661da177e4SLinus Torvalds 7671da177e4SLinus Torvalds DECODE_TAIL; 7681da177e4SLinus Torvalds } 7691da177e4SLinus Torvalds 7701da177e4SLinus Torvalds static int 7711da177e4SLinus Torvalds nfsd4_decode_remove(struct nfsd4_compoundargs *argp, struct nfsd4_remove *remove) 7721da177e4SLinus Torvalds { 7731da177e4SLinus Torvalds DECODE_HEAD; 7741da177e4SLinus Torvalds 7751da177e4SLinus Torvalds READ_BUF(4); 7761da177e4SLinus Torvalds READ32(remove->rm_namelen); 7771da177e4SLinus Torvalds READ_BUF(remove->rm_namelen); 7781da177e4SLinus Torvalds SAVEMEM(remove->rm_name, remove->rm_namelen); 7791da177e4SLinus Torvalds if ((status = check_filename(remove->rm_name, remove->rm_namelen, nfserr_noent))) 7801da177e4SLinus Torvalds return status; 7811da177e4SLinus Torvalds 7821da177e4SLinus Torvalds DECODE_TAIL; 7831da177e4SLinus Torvalds } 7841da177e4SLinus Torvalds 7851da177e4SLinus Torvalds static int 7861da177e4SLinus Torvalds nfsd4_decode_rename(struct nfsd4_compoundargs *argp, struct nfsd4_rename *rename) 7871da177e4SLinus Torvalds { 7881da177e4SLinus Torvalds DECODE_HEAD; 7891da177e4SLinus Torvalds 7901da177e4SLinus Torvalds READ_BUF(4); 7911da177e4SLinus Torvalds READ32(rename->rn_snamelen); 7921da177e4SLinus Torvalds READ_BUF(rename->rn_snamelen + 4); 7931da177e4SLinus Torvalds SAVEMEM(rename->rn_sname, rename->rn_snamelen); 7941da177e4SLinus Torvalds READ32(rename->rn_tnamelen); 7951da177e4SLinus Torvalds READ_BUF(rename->rn_tnamelen); 7961da177e4SLinus Torvalds SAVEMEM(rename->rn_tname, rename->rn_tnamelen); 7971da177e4SLinus Torvalds if ((status = check_filename(rename->rn_sname, rename->rn_snamelen, nfserr_noent))) 7981da177e4SLinus Torvalds return status; 7991da177e4SLinus Torvalds if ((status = check_filename(rename->rn_tname, rename->rn_tnamelen, nfserr_inval))) 8001da177e4SLinus Torvalds return status; 8011da177e4SLinus Torvalds 8021da177e4SLinus Torvalds DECODE_TAIL; 8031da177e4SLinus Torvalds } 8041da177e4SLinus Torvalds 8051da177e4SLinus Torvalds static int 8061da177e4SLinus Torvalds nfsd4_decode_renew(struct nfsd4_compoundargs *argp, clientid_t *clientid) 8071da177e4SLinus Torvalds { 8081da177e4SLinus Torvalds DECODE_HEAD; 8091da177e4SLinus Torvalds 8101da177e4SLinus Torvalds READ_BUF(sizeof(clientid_t)); 8111da177e4SLinus Torvalds COPYMEM(clientid, sizeof(clientid_t)); 8121da177e4SLinus Torvalds 8131da177e4SLinus Torvalds DECODE_TAIL; 8141da177e4SLinus Torvalds } 8151da177e4SLinus Torvalds 8161da177e4SLinus Torvalds static int 8171da177e4SLinus Torvalds nfsd4_decode_setattr(struct nfsd4_compoundargs *argp, struct nfsd4_setattr *setattr) 8181da177e4SLinus Torvalds { 8191da177e4SLinus Torvalds DECODE_HEAD; 8201da177e4SLinus Torvalds 8211da177e4SLinus Torvalds READ_BUF(sizeof(stateid_t)); 8221da177e4SLinus Torvalds READ32(setattr->sa_stateid.si_generation); 8231da177e4SLinus Torvalds COPYMEM(&setattr->sa_stateid.si_opaque, sizeof(stateid_opaque_t)); 8241da177e4SLinus Torvalds if ((status = nfsd4_decode_fattr(argp, setattr->sa_bmval, &setattr->sa_iattr, &setattr->sa_acl))) 8251da177e4SLinus Torvalds goto out; 8261da177e4SLinus Torvalds 8271da177e4SLinus Torvalds DECODE_TAIL; 8281da177e4SLinus Torvalds } 8291da177e4SLinus Torvalds 8301da177e4SLinus Torvalds static int 8311da177e4SLinus Torvalds nfsd4_decode_setclientid(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid *setclientid) 8321da177e4SLinus Torvalds { 8331da177e4SLinus Torvalds DECODE_HEAD; 8341da177e4SLinus Torvalds 8351da177e4SLinus Torvalds READ_BUF(12); 8361da177e4SLinus Torvalds COPYMEM(setclientid->se_verf.data, 8); 8371da177e4SLinus Torvalds READ32(setclientid->se_namelen); 8381da177e4SLinus Torvalds 8391da177e4SLinus Torvalds READ_BUF(setclientid->se_namelen + 8); 8401da177e4SLinus Torvalds SAVEMEM(setclientid->se_name, setclientid->se_namelen); 8411da177e4SLinus Torvalds READ32(setclientid->se_callback_prog); 8421da177e4SLinus Torvalds READ32(setclientid->se_callback_netid_len); 8431da177e4SLinus Torvalds 8441da177e4SLinus Torvalds READ_BUF(setclientid->se_callback_netid_len + 4); 8451da177e4SLinus Torvalds SAVEMEM(setclientid->se_callback_netid_val, setclientid->se_callback_netid_len); 8461da177e4SLinus Torvalds READ32(setclientid->se_callback_addr_len); 8471da177e4SLinus Torvalds 8481da177e4SLinus Torvalds READ_BUF(setclientid->se_callback_addr_len + 4); 8491da177e4SLinus Torvalds SAVEMEM(setclientid->se_callback_addr_val, setclientid->se_callback_addr_len); 8501da177e4SLinus Torvalds READ32(setclientid->se_callback_ident); 8511da177e4SLinus Torvalds 8521da177e4SLinus Torvalds DECODE_TAIL; 8531da177e4SLinus Torvalds } 8541da177e4SLinus Torvalds 8551da177e4SLinus Torvalds static int 8561da177e4SLinus Torvalds nfsd4_decode_setclientid_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid_confirm *scd_c) 8571da177e4SLinus Torvalds { 8581da177e4SLinus Torvalds DECODE_HEAD; 8591da177e4SLinus Torvalds 8601da177e4SLinus Torvalds READ_BUF(8 + sizeof(nfs4_verifier)); 8611da177e4SLinus Torvalds COPYMEM(&scd_c->sc_clientid, 8); 8621da177e4SLinus Torvalds COPYMEM(&scd_c->sc_confirm, sizeof(nfs4_verifier)); 8631da177e4SLinus Torvalds 8641da177e4SLinus Torvalds DECODE_TAIL; 8651da177e4SLinus Torvalds } 8661da177e4SLinus Torvalds 8671da177e4SLinus Torvalds /* Also used for NVERIFY */ 8681da177e4SLinus Torvalds static int 8691da177e4SLinus Torvalds nfsd4_decode_verify(struct nfsd4_compoundargs *argp, struct nfsd4_verify *verify) 8701da177e4SLinus Torvalds { 8711da177e4SLinus Torvalds #if 0 8721da177e4SLinus Torvalds struct nfsd4_compoundargs save = { 8731da177e4SLinus Torvalds .p = argp->p, 8741da177e4SLinus Torvalds .end = argp->end, 8751da177e4SLinus Torvalds .rqstp = argp->rqstp, 8761da177e4SLinus Torvalds }; 8771da177e4SLinus Torvalds u32 ve_bmval[2]; 8781da177e4SLinus Torvalds struct iattr ve_iattr; /* request */ 8791da177e4SLinus Torvalds struct nfs4_acl *ve_acl; /* request */ 8801da177e4SLinus Torvalds #endif 8811da177e4SLinus Torvalds DECODE_HEAD; 8821da177e4SLinus Torvalds 8831da177e4SLinus Torvalds if ((status = nfsd4_decode_bitmap(argp, verify->ve_bmval))) 8841da177e4SLinus Torvalds goto out; 8851da177e4SLinus Torvalds 8861da177e4SLinus Torvalds /* For convenience's sake, we compare raw xdr'd attributes in 8871da177e4SLinus Torvalds * nfsd4_proc_verify; however we still decode here just to return 8881da177e4SLinus Torvalds * correct error in case of bad xdr. */ 8891da177e4SLinus Torvalds #if 0 8901da177e4SLinus Torvalds status = nfsd4_decode_fattr(ve_bmval, &ve_iattr, &ve_acl); 8911da177e4SLinus Torvalds if (status == nfserr_inval) { 8921da177e4SLinus Torvalds status = nfserrno(status); 8931da177e4SLinus Torvalds goto out; 8941da177e4SLinus Torvalds } 8951da177e4SLinus Torvalds #endif 8961da177e4SLinus Torvalds READ_BUF(4); 8971da177e4SLinus Torvalds READ32(verify->ve_attrlen); 8981da177e4SLinus Torvalds READ_BUF(verify->ve_attrlen); 8991da177e4SLinus Torvalds SAVEMEM(verify->ve_attrval, verify->ve_attrlen); 9001da177e4SLinus Torvalds 9011da177e4SLinus Torvalds DECODE_TAIL; 9021da177e4SLinus Torvalds } 9031da177e4SLinus Torvalds 9041da177e4SLinus Torvalds static int 9051da177e4SLinus Torvalds nfsd4_decode_write(struct nfsd4_compoundargs *argp, struct nfsd4_write *write) 9061da177e4SLinus Torvalds { 9071da177e4SLinus Torvalds int avail; 9081da177e4SLinus Torvalds int v; 9091da177e4SLinus Torvalds int len; 9101da177e4SLinus Torvalds DECODE_HEAD; 9111da177e4SLinus Torvalds 9121da177e4SLinus Torvalds READ_BUF(sizeof(stateid_opaque_t) + 20); 9131da177e4SLinus Torvalds READ32(write->wr_stateid.si_generation); 9141da177e4SLinus Torvalds COPYMEM(&write->wr_stateid.si_opaque, sizeof(stateid_opaque_t)); 9151da177e4SLinus Torvalds READ64(write->wr_offset); 9161da177e4SLinus Torvalds READ32(write->wr_stable_how); 9171da177e4SLinus Torvalds if (write->wr_stable_how > 2) 9181da177e4SLinus Torvalds goto xdr_error; 9191da177e4SLinus Torvalds READ32(write->wr_buflen); 9201da177e4SLinus Torvalds 9211da177e4SLinus Torvalds /* Sorry .. no magic macros for this.. * 9221da177e4SLinus Torvalds * READ_BUF(write->wr_buflen); 9231da177e4SLinus Torvalds * SAVEMEM(write->wr_buf, write->wr_buflen); 9241da177e4SLinus Torvalds */ 9251da177e4SLinus Torvalds avail = (char*)argp->end - (char*)argp->p; 9261da177e4SLinus Torvalds if (avail + argp->pagelen < write->wr_buflen) { 9271da177e4SLinus Torvalds printk(KERN_NOTICE "xdr error! (%s:%d)\n", __FILE__, __LINE__); 9281da177e4SLinus Torvalds goto xdr_error; 9291da177e4SLinus Torvalds } 9301da177e4SLinus Torvalds write->wr_vec[0].iov_base = p; 9311da177e4SLinus Torvalds write->wr_vec[0].iov_len = avail; 9321da177e4SLinus Torvalds v = 0; 9331da177e4SLinus Torvalds len = write->wr_buflen; 9341da177e4SLinus Torvalds while (len > write->wr_vec[v].iov_len) { 9351da177e4SLinus Torvalds len -= write->wr_vec[v].iov_len; 9361da177e4SLinus Torvalds v++; 9371da177e4SLinus Torvalds write->wr_vec[v].iov_base = page_address(argp->pagelist[0]); 9381da177e4SLinus Torvalds argp->pagelist++; 9391da177e4SLinus Torvalds if (argp->pagelen >= PAGE_SIZE) { 9401da177e4SLinus Torvalds write->wr_vec[v].iov_len = PAGE_SIZE; 9411da177e4SLinus Torvalds argp->pagelen -= PAGE_SIZE; 9421da177e4SLinus Torvalds } else { 9431da177e4SLinus Torvalds write->wr_vec[v].iov_len = argp->pagelen; 9441da177e4SLinus Torvalds argp->pagelen -= len; 9451da177e4SLinus Torvalds } 9461da177e4SLinus Torvalds } 9471da177e4SLinus Torvalds argp->end = (u32*) (write->wr_vec[v].iov_base + write->wr_vec[v].iov_len); 9481da177e4SLinus Torvalds argp->p = (u32*) (write->wr_vec[v].iov_base + (XDR_QUADLEN(len) << 2)); 9491da177e4SLinus Torvalds write->wr_vec[v].iov_len = len; 9501da177e4SLinus Torvalds write->wr_vlen = v+1; 9511da177e4SLinus Torvalds 9521da177e4SLinus Torvalds DECODE_TAIL; 9531da177e4SLinus Torvalds } 9541da177e4SLinus Torvalds 9551da177e4SLinus Torvalds static int 9561da177e4SLinus Torvalds nfsd4_decode_release_lockowner(struct nfsd4_compoundargs *argp, struct nfsd4_release_lockowner *rlockowner) 9571da177e4SLinus Torvalds { 9581da177e4SLinus Torvalds DECODE_HEAD; 9591da177e4SLinus Torvalds 9601da177e4SLinus Torvalds READ_BUF(12); 9611da177e4SLinus Torvalds COPYMEM(&rlockowner->rl_clientid, sizeof(clientid_t)); 9621da177e4SLinus Torvalds READ32(rlockowner->rl_owner.len); 9631da177e4SLinus Torvalds READ_BUF(rlockowner->rl_owner.len); 9641da177e4SLinus Torvalds READMEM(rlockowner->rl_owner.data, rlockowner->rl_owner.len); 9651da177e4SLinus Torvalds 9661da177e4SLinus Torvalds DECODE_TAIL; 9671da177e4SLinus Torvalds } 9681da177e4SLinus Torvalds 9691da177e4SLinus Torvalds static int 9701da177e4SLinus Torvalds nfsd4_decode_compound(struct nfsd4_compoundargs *argp) 9711da177e4SLinus Torvalds { 9721da177e4SLinus Torvalds DECODE_HEAD; 9731da177e4SLinus Torvalds struct nfsd4_op *op; 9741da177e4SLinus Torvalds int i; 9751da177e4SLinus Torvalds 9761da177e4SLinus Torvalds /* 9771da177e4SLinus Torvalds * XXX: According to spec, we should check the tag 9781da177e4SLinus Torvalds * for UTF-8 compliance. I'm postponing this for 9791da177e4SLinus Torvalds * now because it seems that some clients do use 9801da177e4SLinus Torvalds * binary tags. 9811da177e4SLinus Torvalds */ 9821da177e4SLinus Torvalds READ_BUF(4); 9831da177e4SLinus Torvalds READ32(argp->taglen); 9841da177e4SLinus Torvalds READ_BUF(argp->taglen + 8); 9851da177e4SLinus Torvalds SAVEMEM(argp->tag, argp->taglen); 9861da177e4SLinus Torvalds READ32(argp->minorversion); 9871da177e4SLinus Torvalds READ32(argp->opcnt); 9881da177e4SLinus Torvalds 9891da177e4SLinus Torvalds if (argp->taglen > NFSD4_MAX_TAGLEN) 9901da177e4SLinus Torvalds goto xdr_error; 9911da177e4SLinus Torvalds if (argp->opcnt > 100) 9921da177e4SLinus Torvalds goto xdr_error; 9931da177e4SLinus Torvalds 994e8c96f8cSTobias Klauser if (argp->opcnt > ARRAY_SIZE(argp->iops)) { 9951da177e4SLinus Torvalds argp->ops = kmalloc(argp->opcnt * sizeof(*argp->ops), GFP_KERNEL); 9961da177e4SLinus Torvalds if (!argp->ops) { 9971da177e4SLinus Torvalds argp->ops = argp->iops; 9981da177e4SLinus Torvalds printk(KERN_INFO "nfsd: couldn't allocate room for COMPOUND\n"); 9991da177e4SLinus Torvalds goto xdr_error; 10001da177e4SLinus Torvalds } 10011da177e4SLinus Torvalds } 10021da177e4SLinus Torvalds 10031da177e4SLinus Torvalds for (i = 0; i < argp->opcnt; i++) { 10041da177e4SLinus Torvalds op = &argp->ops[i]; 10051da177e4SLinus Torvalds op->replay = NULL; 10061da177e4SLinus Torvalds 10071da177e4SLinus Torvalds /* 10081da177e4SLinus Torvalds * We can't use READ_BUF() here because we need to handle 10091da177e4SLinus Torvalds * a missing opcode as an OP_WRITE + 1. So we need to check 10101da177e4SLinus Torvalds * to see if we're truly at the end of our buffer or if there 10111da177e4SLinus Torvalds * is another page we need to flip to. 10121da177e4SLinus Torvalds */ 10131da177e4SLinus Torvalds 10141da177e4SLinus Torvalds if (argp->p == argp->end) { 10151da177e4SLinus Torvalds if (argp->pagelen < 4) { 10161da177e4SLinus Torvalds /* There isn't an opcode still on the wire */ 10171da177e4SLinus Torvalds op->opnum = OP_WRITE + 1; 10181da177e4SLinus Torvalds op->status = nfserr_bad_xdr; 10191da177e4SLinus Torvalds argp->opcnt = i+1; 10201da177e4SLinus Torvalds break; 10211da177e4SLinus Torvalds } 10221da177e4SLinus Torvalds 10231da177e4SLinus Torvalds /* 10241da177e4SLinus Torvalds * False alarm. We just hit a page boundary, but there 10251da177e4SLinus Torvalds * is still data available. Move pointer across page 10261da177e4SLinus Torvalds * boundary. *snip from READ_BUF* 10271da177e4SLinus Torvalds */ 10281da177e4SLinus Torvalds argp->p = page_address(argp->pagelist[0]); 10291da177e4SLinus Torvalds argp->pagelist++; 10301da177e4SLinus Torvalds if (argp->pagelen < PAGE_SIZE) { 10311da177e4SLinus Torvalds argp->end = p + (argp->pagelen>>2); 10321da177e4SLinus Torvalds argp->pagelen = 0; 10331da177e4SLinus Torvalds } else { 10341da177e4SLinus Torvalds argp->end = p + (PAGE_SIZE>>2); 10351da177e4SLinus Torvalds argp->pagelen -= PAGE_SIZE; 10361da177e4SLinus Torvalds } 10371da177e4SLinus Torvalds } 10381da177e4SLinus Torvalds op->opnum = ntohl(*argp->p++); 10391da177e4SLinus Torvalds 10401da177e4SLinus Torvalds switch (op->opnum) { 10411da177e4SLinus Torvalds case 2: /* Reserved operation */ 10421da177e4SLinus Torvalds op->opnum = OP_ILLEGAL; 10431da177e4SLinus Torvalds if (argp->minorversion == 0) 10441da177e4SLinus Torvalds op->status = nfserr_op_illegal; 10451da177e4SLinus Torvalds else 10461da177e4SLinus Torvalds op->status = nfserr_minor_vers_mismatch; 10471da177e4SLinus Torvalds break; 10481da177e4SLinus Torvalds case OP_ACCESS: 10491da177e4SLinus Torvalds op->status = nfsd4_decode_access(argp, &op->u.access); 10501da177e4SLinus Torvalds break; 10511da177e4SLinus Torvalds case OP_CLOSE: 10521da177e4SLinus Torvalds op->status = nfsd4_decode_close(argp, &op->u.close); 10531da177e4SLinus Torvalds break; 10541da177e4SLinus Torvalds case OP_COMMIT: 10551da177e4SLinus Torvalds op->status = nfsd4_decode_commit(argp, &op->u.commit); 10561da177e4SLinus Torvalds break; 10571da177e4SLinus Torvalds case OP_CREATE: 10581da177e4SLinus Torvalds op->status = nfsd4_decode_create(argp, &op->u.create); 10591da177e4SLinus Torvalds break; 10601da177e4SLinus Torvalds case OP_DELEGRETURN: 10611da177e4SLinus Torvalds op->status = nfsd4_decode_delegreturn(argp, &op->u.delegreturn); 10621da177e4SLinus Torvalds break; 10631da177e4SLinus Torvalds case OP_GETATTR: 10641da177e4SLinus Torvalds op->status = nfsd4_decode_getattr(argp, &op->u.getattr); 10651da177e4SLinus Torvalds break; 10661da177e4SLinus Torvalds case OP_GETFH: 10671da177e4SLinus Torvalds op->status = nfs_ok; 10681da177e4SLinus Torvalds break; 10691da177e4SLinus Torvalds case OP_LINK: 10701da177e4SLinus Torvalds op->status = nfsd4_decode_link(argp, &op->u.link); 10711da177e4SLinus Torvalds break; 10721da177e4SLinus Torvalds case OP_LOCK: 10731da177e4SLinus Torvalds op->status = nfsd4_decode_lock(argp, &op->u.lock); 10741da177e4SLinus Torvalds break; 10751da177e4SLinus Torvalds case OP_LOCKT: 10761da177e4SLinus Torvalds op->status = nfsd4_decode_lockt(argp, &op->u.lockt); 10771da177e4SLinus Torvalds break; 10781da177e4SLinus Torvalds case OP_LOCKU: 10791da177e4SLinus Torvalds op->status = nfsd4_decode_locku(argp, &op->u.locku); 10801da177e4SLinus Torvalds break; 10811da177e4SLinus Torvalds case OP_LOOKUP: 10821da177e4SLinus Torvalds op->status = nfsd4_decode_lookup(argp, &op->u.lookup); 10831da177e4SLinus Torvalds break; 10841da177e4SLinus Torvalds case OP_LOOKUPP: 10851da177e4SLinus Torvalds op->status = nfs_ok; 10861da177e4SLinus Torvalds break; 10871da177e4SLinus Torvalds case OP_NVERIFY: 10881da177e4SLinus Torvalds op->status = nfsd4_decode_verify(argp, &op->u.nverify); 10891da177e4SLinus Torvalds break; 10901da177e4SLinus Torvalds case OP_OPEN: 10911da177e4SLinus Torvalds op->status = nfsd4_decode_open(argp, &op->u.open); 10921da177e4SLinus Torvalds break; 10931da177e4SLinus Torvalds case OP_OPEN_CONFIRM: 10941da177e4SLinus Torvalds op->status = nfsd4_decode_open_confirm(argp, &op->u.open_confirm); 10951da177e4SLinus Torvalds break; 10961da177e4SLinus Torvalds case OP_OPEN_DOWNGRADE: 10971da177e4SLinus Torvalds op->status = nfsd4_decode_open_downgrade(argp, &op->u.open_downgrade); 10981da177e4SLinus Torvalds break; 10991da177e4SLinus Torvalds case OP_PUTFH: 11001da177e4SLinus Torvalds op->status = nfsd4_decode_putfh(argp, &op->u.putfh); 11011da177e4SLinus Torvalds break; 11021da177e4SLinus Torvalds case OP_PUTROOTFH: 11031da177e4SLinus Torvalds op->status = nfs_ok; 11041da177e4SLinus Torvalds break; 11051da177e4SLinus Torvalds case OP_READ: 11061da177e4SLinus Torvalds op->status = nfsd4_decode_read(argp, &op->u.read); 11071da177e4SLinus Torvalds break; 11081da177e4SLinus Torvalds case OP_READDIR: 11091da177e4SLinus Torvalds op->status = nfsd4_decode_readdir(argp, &op->u.readdir); 11101da177e4SLinus Torvalds break; 11111da177e4SLinus Torvalds case OP_READLINK: 11121da177e4SLinus Torvalds op->status = nfs_ok; 11131da177e4SLinus Torvalds break; 11141da177e4SLinus Torvalds case OP_REMOVE: 11151da177e4SLinus Torvalds op->status = nfsd4_decode_remove(argp, &op->u.remove); 11161da177e4SLinus Torvalds break; 11171da177e4SLinus Torvalds case OP_RENAME: 11181da177e4SLinus Torvalds op->status = nfsd4_decode_rename(argp, &op->u.rename); 11191da177e4SLinus Torvalds break; 11201da177e4SLinus Torvalds case OP_RESTOREFH: 11211da177e4SLinus Torvalds op->status = nfs_ok; 11221da177e4SLinus Torvalds break; 11231da177e4SLinus Torvalds case OP_RENEW: 11241da177e4SLinus Torvalds op->status = nfsd4_decode_renew(argp, &op->u.renew); 11251da177e4SLinus Torvalds break; 11261da177e4SLinus Torvalds case OP_SAVEFH: 11271da177e4SLinus Torvalds op->status = nfs_ok; 11281da177e4SLinus Torvalds break; 11291da177e4SLinus Torvalds case OP_SETATTR: 11301da177e4SLinus Torvalds op->status = nfsd4_decode_setattr(argp, &op->u.setattr); 11311da177e4SLinus Torvalds break; 11321da177e4SLinus Torvalds case OP_SETCLIENTID: 11331da177e4SLinus Torvalds op->status = nfsd4_decode_setclientid(argp, &op->u.setclientid); 11341da177e4SLinus Torvalds break; 11351da177e4SLinus Torvalds case OP_SETCLIENTID_CONFIRM: 11361da177e4SLinus Torvalds op->status = nfsd4_decode_setclientid_confirm(argp, &op->u.setclientid_confirm); 11371da177e4SLinus Torvalds break; 11381da177e4SLinus Torvalds case OP_VERIFY: 11391da177e4SLinus Torvalds op->status = nfsd4_decode_verify(argp, &op->u.verify); 11401da177e4SLinus Torvalds break; 11411da177e4SLinus Torvalds case OP_WRITE: 11421da177e4SLinus Torvalds op->status = nfsd4_decode_write(argp, &op->u.write); 11431da177e4SLinus Torvalds break; 11441da177e4SLinus Torvalds case OP_RELEASE_LOCKOWNER: 11451da177e4SLinus Torvalds op->status = nfsd4_decode_release_lockowner(argp, &op->u.release_lockowner); 11461da177e4SLinus Torvalds break; 11471da177e4SLinus Torvalds default: 11481da177e4SLinus Torvalds op->opnum = OP_ILLEGAL; 11491da177e4SLinus Torvalds op->status = nfserr_op_illegal; 11501da177e4SLinus Torvalds break; 11511da177e4SLinus Torvalds } 11521da177e4SLinus Torvalds 11531da177e4SLinus Torvalds if (op->status) { 11541da177e4SLinus Torvalds argp->opcnt = i+1; 11551da177e4SLinus Torvalds break; 11561da177e4SLinus Torvalds } 11571da177e4SLinus Torvalds } 11581da177e4SLinus Torvalds 11591da177e4SLinus Torvalds DECODE_TAIL; 11601da177e4SLinus Torvalds } 11611da177e4SLinus Torvalds /* 11621da177e4SLinus Torvalds * END OF "GENERIC" DECODE ROUTINES. 11631da177e4SLinus Torvalds */ 11641da177e4SLinus Torvalds 11651da177e4SLinus Torvalds /* 11661da177e4SLinus Torvalds * START OF "GENERIC" ENCODE ROUTINES. 11671da177e4SLinus Torvalds * These may look a little ugly since they are imported from a "generic" 11681da177e4SLinus Torvalds * set of XDR encode/decode routines which are intended to be shared by 11691da177e4SLinus Torvalds * all of our NFSv4 implementations (OpenBSD, MacOS X...). 11701da177e4SLinus Torvalds * 11711da177e4SLinus Torvalds * If the pain of reading these is too great, it should be a straightforward 11721da177e4SLinus Torvalds * task to translate them into Linux-specific versions which are more 11731da177e4SLinus Torvalds * consistent with the style used in NFSv2/v3... 11741da177e4SLinus Torvalds */ 11751da177e4SLinus Torvalds #define ENCODE_HEAD u32 *p 11761da177e4SLinus Torvalds 11771da177e4SLinus Torvalds #define WRITE32(n) *p++ = htonl(n) 11781da177e4SLinus Torvalds #define WRITE64(n) do { \ 11791da177e4SLinus Torvalds *p++ = htonl((u32)((n) >> 32)); \ 11801da177e4SLinus Torvalds *p++ = htonl((u32)(n)); \ 11811da177e4SLinus Torvalds } while (0) 11821da177e4SLinus Torvalds #define WRITEMEM(ptr,nbytes) do { \ 11831da177e4SLinus Torvalds *(p + XDR_QUADLEN(nbytes) -1) = 0; \ 11841da177e4SLinus Torvalds memcpy(p, ptr, nbytes); \ 11851da177e4SLinus Torvalds p += XDR_QUADLEN(nbytes); \ 11861da177e4SLinus Torvalds } while (0) 11871da177e4SLinus Torvalds #define WRITECINFO(c) do { \ 11881da177e4SLinus Torvalds *p++ = htonl(c.atomic); \ 11891da177e4SLinus Torvalds *p++ = htonl(c.before_ctime_sec); \ 11901da177e4SLinus Torvalds *p++ = htonl(c.before_ctime_nsec); \ 11911da177e4SLinus Torvalds *p++ = htonl(c.after_ctime_sec); \ 11921da177e4SLinus Torvalds *p++ = htonl(c.after_ctime_nsec); \ 11931da177e4SLinus Torvalds } while (0) 11941da177e4SLinus Torvalds 11951da177e4SLinus Torvalds #define RESERVE_SPACE(nbytes) do { \ 11961da177e4SLinus Torvalds p = resp->p; \ 11971da177e4SLinus Torvalds BUG_ON(p + XDR_QUADLEN(nbytes) > resp->end); \ 11981da177e4SLinus Torvalds } while (0) 11991da177e4SLinus Torvalds #define ADJUST_ARGS() resp->p = p 12001da177e4SLinus Torvalds 12011da177e4SLinus Torvalds /* 12021da177e4SLinus Torvalds * Header routine to setup seqid operation replay cache 12031da177e4SLinus Torvalds */ 12041da177e4SLinus Torvalds #define ENCODE_SEQID_OP_HEAD \ 12051da177e4SLinus Torvalds u32 *p; \ 12061da177e4SLinus Torvalds u32 *save; \ 12071da177e4SLinus Torvalds \ 12081da177e4SLinus Torvalds save = resp->p; 12091da177e4SLinus Torvalds 12101da177e4SLinus Torvalds /* 12117fb64ceeSNeilBrown * Routine for encoding the result of a "seqid-mutating" NFSv4 operation. This 12127fb64ceeSNeilBrown * is where sequence id's are incremented, and the replay cache is filled. 12137fb64ceeSNeilBrown * Note that we increment sequence id's here, at the last moment, so we're sure 12147fb64ceeSNeilBrown * we know whether the error to be returned is a sequence id mutating error. 12151da177e4SLinus Torvalds */ 12161da177e4SLinus Torvalds 12171da177e4SLinus Torvalds #define ENCODE_SEQID_OP_TAIL(stateowner) do { \ 12181da177e4SLinus Torvalds if (seqid_mutating_err(nfserr) && stateowner) { \ 12191da177e4SLinus Torvalds stateowner->so_seqid++; \ 12201da177e4SLinus Torvalds stateowner->so_replay.rp_status = nfserr; \ 12211da177e4SLinus Torvalds stateowner->so_replay.rp_buflen = \ 12221da177e4SLinus Torvalds (((char *)(resp)->p - (char *)save)); \ 12231da177e4SLinus Torvalds memcpy(stateowner->so_replay.rp_buf, save, \ 12241da177e4SLinus Torvalds stateowner->so_replay.rp_buflen); \ 12251da177e4SLinus Torvalds } } while (0); 12261da177e4SLinus Torvalds 12271da177e4SLinus Torvalds 12281da177e4SLinus Torvalds static u32 nfs4_ftypes[16] = { 12291da177e4SLinus Torvalds NF4BAD, NF4FIFO, NF4CHR, NF4BAD, 12301da177e4SLinus Torvalds NF4DIR, NF4BAD, NF4BLK, NF4BAD, 12311da177e4SLinus Torvalds NF4REG, NF4BAD, NF4LNK, NF4BAD, 12321da177e4SLinus Torvalds NF4SOCK, NF4BAD, NF4LNK, NF4BAD, 12331da177e4SLinus Torvalds }; 12341da177e4SLinus Torvalds 12351da177e4SLinus Torvalds static int 12361da177e4SLinus Torvalds nfsd4_encode_name(struct svc_rqst *rqstp, int whotype, uid_t id, int group, 12371da177e4SLinus Torvalds u32 **p, int *buflen) 12381da177e4SLinus Torvalds { 12391da177e4SLinus Torvalds int status; 12401da177e4SLinus Torvalds 12411da177e4SLinus Torvalds if (*buflen < (XDR_QUADLEN(IDMAP_NAMESZ) << 2) + 4) 12421da177e4SLinus Torvalds return nfserr_resource; 12431da177e4SLinus Torvalds if (whotype != NFS4_ACL_WHO_NAMED) 12441da177e4SLinus Torvalds status = nfs4_acl_write_who(whotype, (u8 *)(*p + 1)); 12451da177e4SLinus Torvalds else if (group) 12461da177e4SLinus Torvalds status = nfsd_map_gid_to_name(rqstp, id, (u8 *)(*p + 1)); 12471da177e4SLinus Torvalds else 12481da177e4SLinus Torvalds status = nfsd_map_uid_to_name(rqstp, id, (u8 *)(*p + 1)); 12491da177e4SLinus Torvalds if (status < 0) 12501da177e4SLinus Torvalds return nfserrno(status); 12511da177e4SLinus Torvalds *p = xdr_encode_opaque(*p, NULL, status); 12521da177e4SLinus Torvalds *buflen -= (XDR_QUADLEN(status) << 2) + 4; 12531da177e4SLinus Torvalds BUG_ON(*buflen < 0); 12541da177e4SLinus Torvalds return 0; 12551da177e4SLinus Torvalds } 12561da177e4SLinus Torvalds 12571da177e4SLinus Torvalds static inline int 12581da177e4SLinus Torvalds nfsd4_encode_user(struct svc_rqst *rqstp, uid_t uid, u32 **p, int *buflen) 12591da177e4SLinus Torvalds { 12601da177e4SLinus Torvalds return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, uid, 0, p, buflen); 12611da177e4SLinus Torvalds } 12621da177e4SLinus Torvalds 12631da177e4SLinus Torvalds static inline int 12641da177e4SLinus Torvalds nfsd4_encode_group(struct svc_rqst *rqstp, uid_t gid, u32 **p, int *buflen) 12651da177e4SLinus Torvalds { 12661da177e4SLinus Torvalds return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, gid, 1, p, buflen); 12671da177e4SLinus Torvalds } 12681da177e4SLinus Torvalds 12691da177e4SLinus Torvalds static inline int 12701da177e4SLinus Torvalds nfsd4_encode_aclname(struct svc_rqst *rqstp, int whotype, uid_t id, int group, 12711da177e4SLinus Torvalds u32 **p, int *buflen) 12721da177e4SLinus Torvalds { 12731da177e4SLinus Torvalds return nfsd4_encode_name(rqstp, whotype, id, group, p, buflen); 12741da177e4SLinus Torvalds } 12751da177e4SLinus Torvalds 12761da177e4SLinus Torvalds 12771da177e4SLinus Torvalds /* 12781da177e4SLinus Torvalds * Note: @fhp can be NULL; in this case, we might have to compose the filehandle 12791da177e4SLinus Torvalds * ourselves. 12801da177e4SLinus Torvalds * 12811da177e4SLinus Torvalds * @countp is the buffer size in _words_; upon successful return this becomes 12821da177e4SLinus Torvalds * replaced with the number of words written. 12831da177e4SLinus Torvalds */ 12841da177e4SLinus Torvalds int 12851da177e4SLinus Torvalds nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp, 12861da177e4SLinus Torvalds struct dentry *dentry, u32 *buffer, int *countp, u32 *bmval, 12871da177e4SLinus Torvalds struct svc_rqst *rqstp) 12881da177e4SLinus Torvalds { 12891da177e4SLinus Torvalds u32 bmval0 = bmval[0]; 12901da177e4SLinus Torvalds u32 bmval1 = bmval[1]; 12911da177e4SLinus Torvalds struct kstat stat; 12921da177e4SLinus Torvalds struct svc_fh tempfh; 12931da177e4SLinus Torvalds struct kstatfs statfs; 12941da177e4SLinus Torvalds int buflen = *countp << 2; 12951da177e4SLinus Torvalds u32 *attrlenp; 12961da177e4SLinus Torvalds u32 dummy; 12971da177e4SLinus Torvalds u64 dummy64; 12981da177e4SLinus Torvalds u32 *p = buffer; 12991da177e4SLinus Torvalds int status; 13001da177e4SLinus Torvalds int aclsupport = 0; 13011da177e4SLinus Torvalds struct nfs4_acl *acl = NULL; 13021da177e4SLinus Torvalds 13031da177e4SLinus Torvalds BUG_ON(bmval1 & NFSD_WRITEONLY_ATTRS_WORD1); 13041da177e4SLinus Torvalds BUG_ON(bmval0 & ~NFSD_SUPPORTED_ATTRS_WORD0); 13051da177e4SLinus Torvalds BUG_ON(bmval1 & ~NFSD_SUPPORTED_ATTRS_WORD1); 13061da177e4SLinus Torvalds 13071da177e4SLinus Torvalds status = vfs_getattr(exp->ex_mnt, dentry, &stat); 13081da177e4SLinus Torvalds if (status) 13091da177e4SLinus Torvalds goto out_nfserr; 13101da177e4SLinus Torvalds if ((bmval0 & (FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL)) || 13111da177e4SLinus Torvalds (bmval1 & (FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | 13121da177e4SLinus Torvalds FATTR4_WORD1_SPACE_TOTAL))) { 13131da177e4SLinus Torvalds status = vfs_statfs(dentry->d_inode->i_sb, &statfs); 13141da177e4SLinus Torvalds if (status) 13151da177e4SLinus Torvalds goto out_nfserr; 13161da177e4SLinus Torvalds } 13171da177e4SLinus Torvalds if ((bmval0 & (FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FSID)) && !fhp) { 13181da177e4SLinus Torvalds fh_init(&tempfh, NFS4_FHSIZE); 13191da177e4SLinus Torvalds status = fh_compose(&tempfh, exp, dentry, NULL); 13201da177e4SLinus Torvalds if (status) 13211da177e4SLinus Torvalds goto out; 13221da177e4SLinus Torvalds fhp = &tempfh; 13231da177e4SLinus Torvalds } 13241da177e4SLinus Torvalds if (bmval0 & (FATTR4_WORD0_ACL | FATTR4_WORD0_ACLSUPPORT 13251da177e4SLinus Torvalds | FATTR4_WORD0_SUPPORTED_ATTRS)) { 13261da177e4SLinus Torvalds status = nfsd4_get_nfs4_acl(rqstp, dentry, &acl); 13271da177e4SLinus Torvalds aclsupport = (status == 0); 13281da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_ACL) { 13291da177e4SLinus Torvalds if (status == -EOPNOTSUPP) 13301da177e4SLinus Torvalds bmval0 &= ~FATTR4_WORD0_ACL; 13311da177e4SLinus Torvalds else if (status == -EINVAL) { 13321da177e4SLinus Torvalds status = nfserr_attrnotsupp; 13331da177e4SLinus Torvalds goto out; 13341da177e4SLinus Torvalds } else if (status != 0) 13351da177e4SLinus Torvalds goto out_nfserr; 13361da177e4SLinus Torvalds } 13371da177e4SLinus Torvalds } 13381da177e4SLinus Torvalds if ((buflen -= 16) < 0) 13391da177e4SLinus Torvalds goto out_resource; 13401da177e4SLinus Torvalds 13411da177e4SLinus Torvalds WRITE32(2); 13421da177e4SLinus Torvalds WRITE32(bmval0); 13431da177e4SLinus Torvalds WRITE32(bmval1); 13441da177e4SLinus Torvalds attrlenp = p++; /* to be backfilled later */ 13451da177e4SLinus Torvalds 13461da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) { 13471da177e4SLinus Torvalds if ((buflen -= 12) < 0) 13481da177e4SLinus Torvalds goto out_resource; 13491da177e4SLinus Torvalds WRITE32(2); 13501da177e4SLinus Torvalds WRITE32(aclsupport ? 13511da177e4SLinus Torvalds NFSD_SUPPORTED_ATTRS_WORD0 : 13521da177e4SLinus Torvalds NFSD_SUPPORTED_ATTRS_WORD0 & ~FATTR4_WORD0_ACL); 13531da177e4SLinus Torvalds WRITE32(NFSD_SUPPORTED_ATTRS_WORD1); 13541da177e4SLinus Torvalds } 13551da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_TYPE) { 13561da177e4SLinus Torvalds if ((buflen -= 4) < 0) 13571da177e4SLinus Torvalds goto out_resource; 13581da177e4SLinus Torvalds dummy = nfs4_ftypes[(stat.mode & S_IFMT) >> 12]; 13591da177e4SLinus Torvalds if (dummy == NF4BAD) 13601da177e4SLinus Torvalds goto out_serverfault; 13611da177e4SLinus Torvalds WRITE32(dummy); 13621da177e4SLinus Torvalds } 13631da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_FH_EXPIRE_TYPE) { 13641da177e4SLinus Torvalds if ((buflen -= 4) < 0) 13651da177e4SLinus Torvalds goto out_resource; 136649640001SNeilBrown if (exp->ex_flags & NFSEXP_NOSUBTREECHECK) 1367e34ac862SNeilBrown WRITE32(NFS4_FH_PERSISTENT); 136849640001SNeilBrown else 1369e34ac862SNeilBrown WRITE32(NFS4_FH_PERSISTENT|NFS4_FH_VOL_RENAME); 13701da177e4SLinus Torvalds } 13711da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_CHANGE) { 13721da177e4SLinus Torvalds /* 13731da177e4SLinus Torvalds * Note: This _must_ be consistent with the scheme for writing 13741da177e4SLinus Torvalds * change_info, so any changes made here must be reflected there 13751da177e4SLinus Torvalds * as well. (See xdr4.h:set_change_info() and the WRITECINFO() 13761da177e4SLinus Torvalds * macro above.) 13771da177e4SLinus Torvalds */ 13781da177e4SLinus Torvalds if ((buflen -= 8) < 0) 13791da177e4SLinus Torvalds goto out_resource; 13801da177e4SLinus Torvalds WRITE32(stat.ctime.tv_sec); 13811da177e4SLinus Torvalds WRITE32(stat.ctime.tv_nsec); 13821da177e4SLinus Torvalds } 13831da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_SIZE) { 13841da177e4SLinus Torvalds if ((buflen -= 8) < 0) 13851da177e4SLinus Torvalds goto out_resource; 13861da177e4SLinus Torvalds WRITE64(stat.size); 13871da177e4SLinus Torvalds } 13881da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_LINK_SUPPORT) { 13891da177e4SLinus Torvalds if ((buflen -= 4) < 0) 13901da177e4SLinus Torvalds goto out_resource; 13911da177e4SLinus Torvalds WRITE32(1); 13921da177e4SLinus Torvalds } 13931da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_SYMLINK_SUPPORT) { 13941da177e4SLinus Torvalds if ((buflen -= 4) < 0) 13951da177e4SLinus Torvalds goto out_resource; 13961da177e4SLinus Torvalds WRITE32(1); 13971da177e4SLinus Torvalds } 13981da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_NAMED_ATTR) { 13991da177e4SLinus Torvalds if ((buflen -= 4) < 0) 14001da177e4SLinus Torvalds goto out_resource; 14011da177e4SLinus Torvalds WRITE32(0); 14021da177e4SLinus Torvalds } 14031da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_FSID) { 14041da177e4SLinus Torvalds if ((buflen -= 16) < 0) 14051da177e4SLinus Torvalds goto out_resource; 14061da177e4SLinus Torvalds if (is_fsid(fhp, rqstp->rq_reffh)) { 14071da177e4SLinus Torvalds WRITE64((u64)exp->ex_fsid); 14081da177e4SLinus Torvalds WRITE64((u64)0); 14091da177e4SLinus Torvalds } else { 14101da177e4SLinus Torvalds WRITE32(0); 14111da177e4SLinus Torvalds WRITE32(MAJOR(stat.dev)); 14121da177e4SLinus Torvalds WRITE32(0); 14131da177e4SLinus Torvalds WRITE32(MINOR(stat.dev)); 14141da177e4SLinus Torvalds } 14151da177e4SLinus Torvalds } 14161da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_UNIQUE_HANDLES) { 14171da177e4SLinus Torvalds if ((buflen -= 4) < 0) 14181da177e4SLinus Torvalds goto out_resource; 14191da177e4SLinus Torvalds WRITE32(0); 14201da177e4SLinus Torvalds } 14211da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_LEASE_TIME) { 14221da177e4SLinus Torvalds if ((buflen -= 4) < 0) 14231da177e4SLinus Torvalds goto out_resource; 14241da177e4SLinus Torvalds WRITE32(NFSD_LEASE_TIME); 14251da177e4SLinus Torvalds } 14261da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_RDATTR_ERROR) { 14271da177e4SLinus Torvalds if ((buflen -= 4) < 0) 14281da177e4SLinus Torvalds goto out_resource; 14291da177e4SLinus Torvalds WRITE32(0); 14301da177e4SLinus Torvalds } 14311da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_ACL) { 14321da177e4SLinus Torvalds struct nfs4_ace *ace; 14331da177e4SLinus Torvalds struct list_head *h; 14341da177e4SLinus Torvalds 14351da177e4SLinus Torvalds if (acl == NULL) { 14361da177e4SLinus Torvalds if ((buflen -= 4) < 0) 14371da177e4SLinus Torvalds goto out_resource; 14381da177e4SLinus Torvalds 14391da177e4SLinus Torvalds WRITE32(0); 14401da177e4SLinus Torvalds goto out_acl; 14411da177e4SLinus Torvalds } 14421da177e4SLinus Torvalds if ((buflen -= 4) < 0) 14431da177e4SLinus Torvalds goto out_resource; 14441da177e4SLinus Torvalds WRITE32(acl->naces); 14451da177e4SLinus Torvalds 14461da177e4SLinus Torvalds list_for_each(h, &acl->ace_head) { 14471da177e4SLinus Torvalds ace = list_entry(h, struct nfs4_ace, l_ace); 14481da177e4SLinus Torvalds 14491da177e4SLinus Torvalds if ((buflen -= 4*3) < 0) 14501da177e4SLinus Torvalds goto out_resource; 14511da177e4SLinus Torvalds WRITE32(ace->type); 14521da177e4SLinus Torvalds WRITE32(ace->flag); 14531da177e4SLinus Torvalds WRITE32(ace->access_mask & NFS4_ACE_MASK_ALL); 14541da177e4SLinus Torvalds status = nfsd4_encode_aclname(rqstp, ace->whotype, 14551da177e4SLinus Torvalds ace->who, ace->flag & NFS4_ACE_IDENTIFIER_GROUP, 14561da177e4SLinus Torvalds &p, &buflen); 14571da177e4SLinus Torvalds if (status == nfserr_resource) 14581da177e4SLinus Torvalds goto out_resource; 14591da177e4SLinus Torvalds if (status) 14601da177e4SLinus Torvalds goto out; 14611da177e4SLinus Torvalds } 14621da177e4SLinus Torvalds } 14631da177e4SLinus Torvalds out_acl: 14641da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_ACLSUPPORT) { 14651da177e4SLinus Torvalds if ((buflen -= 4) < 0) 14661da177e4SLinus Torvalds goto out_resource; 14671da177e4SLinus Torvalds WRITE32(aclsupport ? 14681da177e4SLinus Torvalds ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL : 0); 14691da177e4SLinus Torvalds } 14701da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_CANSETTIME) { 14711da177e4SLinus Torvalds if ((buflen -= 4) < 0) 14721da177e4SLinus Torvalds goto out_resource; 14731da177e4SLinus Torvalds WRITE32(1); 14741da177e4SLinus Torvalds } 14751da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_CASE_INSENSITIVE) { 14761da177e4SLinus Torvalds if ((buflen -= 4) < 0) 14771da177e4SLinus Torvalds goto out_resource; 14781da177e4SLinus Torvalds WRITE32(1); 14791da177e4SLinus Torvalds } 14801da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_CASE_PRESERVING) { 14811da177e4SLinus Torvalds if ((buflen -= 4) < 0) 14821da177e4SLinus Torvalds goto out_resource; 14831da177e4SLinus Torvalds WRITE32(1); 14841da177e4SLinus Torvalds } 14851da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_CHOWN_RESTRICTED) { 14861da177e4SLinus Torvalds if ((buflen -= 4) < 0) 14871da177e4SLinus Torvalds goto out_resource; 14881da177e4SLinus Torvalds WRITE32(1); 14891da177e4SLinus Torvalds } 14901da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_FILEHANDLE) { 14911da177e4SLinus Torvalds buflen -= (XDR_QUADLEN(fhp->fh_handle.fh_size) << 2) + 4; 14921da177e4SLinus Torvalds if (buflen < 0) 14931da177e4SLinus Torvalds goto out_resource; 14941da177e4SLinus Torvalds WRITE32(fhp->fh_handle.fh_size); 14951da177e4SLinus Torvalds WRITEMEM(&fhp->fh_handle.fh_base, fhp->fh_handle.fh_size); 14961da177e4SLinus Torvalds } 14971da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_FILEID) { 14981da177e4SLinus Torvalds if ((buflen -= 8) < 0) 14991da177e4SLinus Torvalds goto out_resource; 15001da177e4SLinus Torvalds WRITE64((u64) stat.ino); 15011da177e4SLinus Torvalds } 15021da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_FILES_AVAIL) { 15031da177e4SLinus Torvalds if ((buflen -= 8) < 0) 15041da177e4SLinus Torvalds goto out_resource; 15051da177e4SLinus Torvalds WRITE64((u64) statfs.f_ffree); 15061da177e4SLinus Torvalds } 15071da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_FILES_FREE) { 15081da177e4SLinus Torvalds if ((buflen -= 8) < 0) 15091da177e4SLinus Torvalds goto out_resource; 15101da177e4SLinus Torvalds WRITE64((u64) statfs.f_ffree); 15111da177e4SLinus Torvalds } 15121da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_FILES_TOTAL) { 15131da177e4SLinus Torvalds if ((buflen -= 8) < 0) 15141da177e4SLinus Torvalds goto out_resource; 15151da177e4SLinus Torvalds WRITE64((u64) statfs.f_files); 15161da177e4SLinus Torvalds } 15171da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_HOMOGENEOUS) { 15181da177e4SLinus Torvalds if ((buflen -= 4) < 0) 15191da177e4SLinus Torvalds goto out_resource; 15201da177e4SLinus Torvalds WRITE32(1); 15211da177e4SLinus Torvalds } 15221da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_MAXFILESIZE) { 15231da177e4SLinus Torvalds if ((buflen -= 8) < 0) 15241da177e4SLinus Torvalds goto out_resource; 15251da177e4SLinus Torvalds WRITE64(~(u64)0); 15261da177e4SLinus Torvalds } 15271da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_MAXLINK) { 15281da177e4SLinus Torvalds if ((buflen -= 4) < 0) 15291da177e4SLinus Torvalds goto out_resource; 15301da177e4SLinus Torvalds WRITE32(255); 15311da177e4SLinus Torvalds } 15321da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_MAXNAME) { 15331da177e4SLinus Torvalds if ((buflen -= 4) < 0) 15341da177e4SLinus Torvalds goto out_resource; 15351da177e4SLinus Torvalds WRITE32(~(u32) 0); 15361da177e4SLinus Torvalds } 15371da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_MAXREAD) { 15381da177e4SLinus Torvalds if ((buflen -= 8) < 0) 15391da177e4SLinus Torvalds goto out_resource; 15401da177e4SLinus Torvalds WRITE64((u64) NFSSVC_MAXBLKSIZE); 15411da177e4SLinus Torvalds } 15421da177e4SLinus Torvalds if (bmval0 & FATTR4_WORD0_MAXWRITE) { 15431da177e4SLinus Torvalds if ((buflen -= 8) < 0) 15441da177e4SLinus Torvalds goto out_resource; 15451da177e4SLinus Torvalds WRITE64((u64) NFSSVC_MAXBLKSIZE); 15461da177e4SLinus Torvalds } 15471da177e4SLinus Torvalds if (bmval1 & FATTR4_WORD1_MODE) { 15481da177e4SLinus Torvalds if ((buflen -= 4) < 0) 15491da177e4SLinus Torvalds goto out_resource; 15501da177e4SLinus Torvalds WRITE32(stat.mode & S_IALLUGO); 15511da177e4SLinus Torvalds } 15521da177e4SLinus Torvalds if (bmval1 & FATTR4_WORD1_NO_TRUNC) { 15531da177e4SLinus Torvalds if ((buflen -= 4) < 0) 15541da177e4SLinus Torvalds goto out_resource; 15551da177e4SLinus Torvalds WRITE32(1); 15561da177e4SLinus Torvalds } 15571da177e4SLinus Torvalds if (bmval1 & FATTR4_WORD1_NUMLINKS) { 15581da177e4SLinus Torvalds if ((buflen -= 4) < 0) 15591da177e4SLinus Torvalds goto out_resource; 15601da177e4SLinus Torvalds WRITE32(stat.nlink); 15611da177e4SLinus Torvalds } 15621da177e4SLinus Torvalds if (bmval1 & FATTR4_WORD1_OWNER) { 15631da177e4SLinus Torvalds status = nfsd4_encode_user(rqstp, stat.uid, &p, &buflen); 15641da177e4SLinus Torvalds if (status == nfserr_resource) 15651da177e4SLinus Torvalds goto out_resource; 15661da177e4SLinus Torvalds if (status) 15671da177e4SLinus Torvalds goto out; 15681da177e4SLinus Torvalds } 15691da177e4SLinus Torvalds if (bmval1 & FATTR4_WORD1_OWNER_GROUP) { 15701da177e4SLinus Torvalds status = nfsd4_encode_group(rqstp, stat.gid, &p, &buflen); 15711da177e4SLinus Torvalds if (status == nfserr_resource) 15721da177e4SLinus Torvalds goto out_resource; 15731da177e4SLinus Torvalds if (status) 15741da177e4SLinus Torvalds goto out; 15751da177e4SLinus Torvalds } 15761da177e4SLinus Torvalds if (bmval1 & FATTR4_WORD1_RAWDEV) { 15771da177e4SLinus Torvalds if ((buflen -= 8) < 0) 15781da177e4SLinus Torvalds goto out_resource; 15791da177e4SLinus Torvalds WRITE32((u32) MAJOR(stat.rdev)); 15801da177e4SLinus Torvalds WRITE32((u32) MINOR(stat.rdev)); 15811da177e4SLinus Torvalds } 15821da177e4SLinus Torvalds if (bmval1 & FATTR4_WORD1_SPACE_AVAIL) { 15831da177e4SLinus Torvalds if ((buflen -= 8) < 0) 15841da177e4SLinus Torvalds goto out_resource; 15851da177e4SLinus Torvalds dummy64 = (u64)statfs.f_bavail * (u64)statfs.f_bsize; 15861da177e4SLinus Torvalds WRITE64(dummy64); 15871da177e4SLinus Torvalds } 15881da177e4SLinus Torvalds if (bmval1 & FATTR4_WORD1_SPACE_FREE) { 15891da177e4SLinus Torvalds if ((buflen -= 8) < 0) 15901da177e4SLinus Torvalds goto out_resource; 15911da177e4SLinus Torvalds dummy64 = (u64)statfs.f_bfree * (u64)statfs.f_bsize; 15921da177e4SLinus Torvalds WRITE64(dummy64); 15931da177e4SLinus Torvalds } 15941da177e4SLinus Torvalds if (bmval1 & FATTR4_WORD1_SPACE_TOTAL) { 15951da177e4SLinus Torvalds if ((buflen -= 8) < 0) 15961da177e4SLinus Torvalds goto out_resource; 15971da177e4SLinus Torvalds dummy64 = (u64)statfs.f_blocks * (u64)statfs.f_bsize; 15981da177e4SLinus Torvalds WRITE64(dummy64); 15991da177e4SLinus Torvalds } 16001da177e4SLinus Torvalds if (bmval1 & FATTR4_WORD1_SPACE_USED) { 16011da177e4SLinus Torvalds if ((buflen -= 8) < 0) 16021da177e4SLinus Torvalds goto out_resource; 16031da177e4SLinus Torvalds dummy64 = (u64)stat.blocks << 9; 16041da177e4SLinus Torvalds WRITE64(dummy64); 16051da177e4SLinus Torvalds } 16061da177e4SLinus Torvalds if (bmval1 & FATTR4_WORD1_TIME_ACCESS) { 16071da177e4SLinus Torvalds if ((buflen -= 12) < 0) 16081da177e4SLinus Torvalds goto out_resource; 16091da177e4SLinus Torvalds WRITE32(0); 16101da177e4SLinus Torvalds WRITE32(stat.atime.tv_sec); 16111da177e4SLinus Torvalds WRITE32(stat.atime.tv_nsec); 16121da177e4SLinus Torvalds } 16131da177e4SLinus Torvalds if (bmval1 & FATTR4_WORD1_TIME_DELTA) { 16141da177e4SLinus Torvalds if ((buflen -= 12) < 0) 16151da177e4SLinus Torvalds goto out_resource; 16161da177e4SLinus Torvalds WRITE32(0); 16171da177e4SLinus Torvalds WRITE32(1); 16181da177e4SLinus Torvalds WRITE32(0); 16191da177e4SLinus Torvalds } 16201da177e4SLinus Torvalds if (bmval1 & FATTR4_WORD1_TIME_METADATA) { 16211da177e4SLinus Torvalds if ((buflen -= 12) < 0) 16221da177e4SLinus Torvalds goto out_resource; 16231da177e4SLinus Torvalds WRITE32(0); 16241da177e4SLinus Torvalds WRITE32(stat.ctime.tv_sec); 16251da177e4SLinus Torvalds WRITE32(stat.ctime.tv_nsec); 16261da177e4SLinus Torvalds } 16271da177e4SLinus Torvalds if (bmval1 & FATTR4_WORD1_TIME_MODIFY) { 16281da177e4SLinus Torvalds if ((buflen -= 12) < 0) 16291da177e4SLinus Torvalds goto out_resource; 16301da177e4SLinus Torvalds WRITE32(0); 16311da177e4SLinus Torvalds WRITE32(stat.mtime.tv_sec); 16321da177e4SLinus Torvalds WRITE32(stat.mtime.tv_nsec); 16331da177e4SLinus Torvalds } 16341da177e4SLinus Torvalds if (bmval1 & FATTR4_WORD1_MOUNTED_ON_FILEID) { 16351da177e4SLinus Torvalds struct dentry *mnt_pnt, *mnt_root; 16361da177e4SLinus Torvalds 16371da177e4SLinus Torvalds if ((buflen -= 8) < 0) 16381da177e4SLinus Torvalds goto out_resource; 16391da177e4SLinus Torvalds mnt_root = exp->ex_mnt->mnt_root; 16401da177e4SLinus Torvalds if (mnt_root->d_inode == dentry->d_inode) { 16411da177e4SLinus Torvalds mnt_pnt = exp->ex_mnt->mnt_mountpoint; 16421da177e4SLinus Torvalds WRITE64((u64) mnt_pnt->d_inode->i_ino); 16431da177e4SLinus Torvalds } else 16441da177e4SLinus Torvalds WRITE64((u64) stat.ino); 16451da177e4SLinus Torvalds } 16461da177e4SLinus Torvalds *attrlenp = htonl((char *)p - (char *)attrlenp - 4); 16471da177e4SLinus Torvalds *countp = p - buffer; 16481da177e4SLinus Torvalds status = nfs_ok; 16491da177e4SLinus Torvalds 16501da177e4SLinus Torvalds out: 16511da177e4SLinus Torvalds nfs4_acl_free(acl); 16521da177e4SLinus Torvalds if (fhp == &tempfh) 16531da177e4SLinus Torvalds fh_put(&tempfh); 16541da177e4SLinus Torvalds return status; 16551da177e4SLinus Torvalds out_nfserr: 16561da177e4SLinus Torvalds status = nfserrno(status); 16571da177e4SLinus Torvalds goto out; 16581da177e4SLinus Torvalds out_resource: 16591da177e4SLinus Torvalds *countp = 0; 16601da177e4SLinus Torvalds status = nfserr_resource; 16611da177e4SLinus Torvalds goto out; 16621da177e4SLinus Torvalds out_serverfault: 16631da177e4SLinus Torvalds status = nfserr_serverfault; 16641da177e4SLinus Torvalds goto out; 16651da177e4SLinus Torvalds } 16661da177e4SLinus Torvalds 16671da177e4SLinus Torvalds static int 16681da177e4SLinus Torvalds nfsd4_encode_dirent_fattr(struct nfsd4_readdir *cd, 16691da177e4SLinus Torvalds const char *name, int namlen, u32 *p, int *buflen) 16701da177e4SLinus Torvalds { 16711da177e4SLinus Torvalds struct svc_export *exp = cd->rd_fhp->fh_export; 16721da177e4SLinus Torvalds struct dentry *dentry; 16731da177e4SLinus Torvalds int nfserr; 16741da177e4SLinus Torvalds 16751da177e4SLinus Torvalds dentry = lookup_one_len(name, cd->rd_fhp->fh_dentry, namlen); 16761da177e4SLinus Torvalds if (IS_ERR(dentry)) 16771da177e4SLinus Torvalds return nfserrno(PTR_ERR(dentry)); 16781da177e4SLinus Torvalds 16791da177e4SLinus Torvalds exp_get(exp); 16801da177e4SLinus Torvalds if (d_mountpoint(dentry)) { 16811da177e4SLinus Torvalds if (nfsd_cross_mnt(cd->rd_rqstp, &dentry, &exp)) { 16821da177e4SLinus Torvalds /* 16831da177e4SLinus Torvalds * -EAGAIN is the only error returned from 16841da177e4SLinus Torvalds * nfsd_cross_mnt() and it indicates that an 16851da177e4SLinus Torvalds * up-call has been initiated to fill in the export 16861da177e4SLinus Torvalds * options on exp. When the answer comes back, 16871da177e4SLinus Torvalds * this call will be retried. 16881da177e4SLinus Torvalds */ 16891da177e4SLinus Torvalds nfserr = nfserr_dropit; 16901da177e4SLinus Torvalds goto out_put; 16911da177e4SLinus Torvalds } 16921da177e4SLinus Torvalds 16931da177e4SLinus Torvalds } 16941da177e4SLinus Torvalds nfserr = nfsd4_encode_fattr(NULL, exp, dentry, p, buflen, cd->rd_bmval, 16951da177e4SLinus Torvalds cd->rd_rqstp); 16961da177e4SLinus Torvalds out_put: 16971da177e4SLinus Torvalds dput(dentry); 16981da177e4SLinus Torvalds exp_put(exp); 16991da177e4SLinus Torvalds return nfserr; 17001da177e4SLinus Torvalds } 17011da177e4SLinus Torvalds 17021da177e4SLinus Torvalds static u32 * 17031da177e4SLinus Torvalds nfsd4_encode_rdattr_error(u32 *p, int buflen, int nfserr) 17041da177e4SLinus Torvalds { 17051da177e4SLinus Torvalds u32 *attrlenp; 17061da177e4SLinus Torvalds 17071da177e4SLinus Torvalds if (buflen < 6) 17081da177e4SLinus Torvalds return NULL; 17091da177e4SLinus Torvalds *p++ = htonl(2); 17101da177e4SLinus Torvalds *p++ = htonl(FATTR4_WORD0_RDATTR_ERROR); /* bmval0 */ 17111da177e4SLinus Torvalds *p++ = htonl(0); /* bmval1 */ 17121da177e4SLinus Torvalds 17131da177e4SLinus Torvalds attrlenp = p++; 17141da177e4SLinus Torvalds *p++ = nfserr; /* no htonl */ 17151da177e4SLinus Torvalds *attrlenp = htonl((char *)p - (char *)attrlenp - 4); 17161da177e4SLinus Torvalds return p; 17171da177e4SLinus Torvalds } 17181da177e4SLinus Torvalds 17191da177e4SLinus Torvalds static int 17201da177e4SLinus Torvalds nfsd4_encode_dirent(struct readdir_cd *ccd, const char *name, int namlen, 17211da177e4SLinus Torvalds loff_t offset, ino_t ino, unsigned int d_type) 17221da177e4SLinus Torvalds { 17231da177e4SLinus Torvalds struct nfsd4_readdir *cd = container_of(ccd, struct nfsd4_readdir, common); 17241da177e4SLinus Torvalds int buflen; 17251da177e4SLinus Torvalds u32 *p = cd->buffer; 17261da177e4SLinus Torvalds int nfserr = nfserr_toosmall; 17271da177e4SLinus Torvalds 17281da177e4SLinus Torvalds /* In nfsv4, "." and ".." never make it onto the wire.. */ 17291da177e4SLinus Torvalds if (name && isdotent(name, namlen)) { 17301da177e4SLinus Torvalds cd->common.err = nfs_ok; 17311da177e4SLinus Torvalds return 0; 17321da177e4SLinus Torvalds } 17331da177e4SLinus Torvalds 17341da177e4SLinus Torvalds if (cd->offset) 17351da177e4SLinus Torvalds xdr_encode_hyper(cd->offset, (u64) offset); 17361da177e4SLinus Torvalds 17371da177e4SLinus Torvalds buflen = cd->buflen - 4 - XDR_QUADLEN(namlen); 17381da177e4SLinus Torvalds if (buflen < 0) 17391da177e4SLinus Torvalds goto fail; 17401da177e4SLinus Torvalds 17411da177e4SLinus Torvalds *p++ = xdr_one; /* mark entry present */ 17421da177e4SLinus Torvalds cd->offset = p; /* remember pointer */ 17431da177e4SLinus Torvalds p = xdr_encode_hyper(p, NFS_OFFSET_MAX); /* offset of next entry */ 17441da177e4SLinus Torvalds p = xdr_encode_array(p, name, namlen); /* name length & name */ 17451da177e4SLinus Torvalds 17461da177e4SLinus Torvalds nfserr = nfsd4_encode_dirent_fattr(cd, name, namlen, p, &buflen); 17471da177e4SLinus Torvalds switch (nfserr) { 17481da177e4SLinus Torvalds case nfs_ok: 17491da177e4SLinus Torvalds p += buflen; 17501da177e4SLinus Torvalds break; 17511da177e4SLinus Torvalds case nfserr_resource: 17521da177e4SLinus Torvalds nfserr = nfserr_toosmall; 17531da177e4SLinus Torvalds goto fail; 17541da177e4SLinus Torvalds case nfserr_dropit: 17551da177e4SLinus Torvalds goto fail; 17561da177e4SLinus Torvalds default: 17571da177e4SLinus Torvalds /* 17581da177e4SLinus Torvalds * If the client requested the RDATTR_ERROR attribute, 17591da177e4SLinus Torvalds * we stuff the error code into this attribute 17601da177e4SLinus Torvalds * and continue. If this attribute was not requested, 17611da177e4SLinus Torvalds * then in accordance with the spec, we fail the 17621da177e4SLinus Torvalds * entire READDIR operation(!) 17631da177e4SLinus Torvalds */ 17641da177e4SLinus Torvalds if (!(cd->rd_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)) 17651da177e4SLinus Torvalds goto fail; 17661da177e4SLinus Torvalds p = nfsd4_encode_rdattr_error(p, buflen, nfserr); 176734081efcSFred Isaman if (p == NULL) { 176834081efcSFred Isaman nfserr = nfserr_toosmall; 17691da177e4SLinus Torvalds goto fail; 17701da177e4SLinus Torvalds } 177134081efcSFred Isaman } 17721da177e4SLinus Torvalds cd->buflen -= (p - cd->buffer); 17731da177e4SLinus Torvalds cd->buffer = p; 17741da177e4SLinus Torvalds cd->common.err = nfs_ok; 17751da177e4SLinus Torvalds return 0; 17761da177e4SLinus Torvalds fail: 17771da177e4SLinus Torvalds cd->common.err = nfserr; 17781da177e4SLinus Torvalds return -EINVAL; 17791da177e4SLinus Torvalds } 17801da177e4SLinus Torvalds 17811da177e4SLinus Torvalds static void 17821da177e4SLinus Torvalds nfsd4_encode_access(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_access *access) 17831da177e4SLinus Torvalds { 17841da177e4SLinus Torvalds ENCODE_HEAD; 17851da177e4SLinus Torvalds 17861da177e4SLinus Torvalds if (!nfserr) { 17871da177e4SLinus Torvalds RESERVE_SPACE(8); 17881da177e4SLinus Torvalds WRITE32(access->ac_supported); 17891da177e4SLinus Torvalds WRITE32(access->ac_resp_access); 17901da177e4SLinus Torvalds ADJUST_ARGS(); 17911da177e4SLinus Torvalds } 17921da177e4SLinus Torvalds } 17931da177e4SLinus Torvalds 17941da177e4SLinus Torvalds static void 17951da177e4SLinus Torvalds nfsd4_encode_close(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_close *close) 17961da177e4SLinus Torvalds { 17971da177e4SLinus Torvalds ENCODE_SEQID_OP_HEAD; 17981da177e4SLinus Torvalds 17991da177e4SLinus Torvalds if (!nfserr) { 18001da177e4SLinus Torvalds RESERVE_SPACE(sizeof(stateid_t)); 18011da177e4SLinus Torvalds WRITE32(close->cl_stateid.si_generation); 18021da177e4SLinus Torvalds WRITEMEM(&close->cl_stateid.si_opaque, sizeof(stateid_opaque_t)); 18031da177e4SLinus Torvalds ADJUST_ARGS(); 18041da177e4SLinus Torvalds } 18051da177e4SLinus Torvalds ENCODE_SEQID_OP_TAIL(close->cl_stateowner); 18061da177e4SLinus Torvalds } 18071da177e4SLinus Torvalds 18081da177e4SLinus Torvalds 18091da177e4SLinus Torvalds static void 18101da177e4SLinus Torvalds nfsd4_encode_commit(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_commit *commit) 18111da177e4SLinus Torvalds { 18121da177e4SLinus Torvalds ENCODE_HEAD; 18131da177e4SLinus Torvalds 18141da177e4SLinus Torvalds if (!nfserr) { 18151da177e4SLinus Torvalds RESERVE_SPACE(8); 18161da177e4SLinus Torvalds WRITEMEM(commit->co_verf.data, 8); 18171da177e4SLinus Torvalds ADJUST_ARGS(); 18181da177e4SLinus Torvalds } 18191da177e4SLinus Torvalds } 18201da177e4SLinus Torvalds 18211da177e4SLinus Torvalds static void 18221da177e4SLinus Torvalds nfsd4_encode_create(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_create *create) 18231da177e4SLinus Torvalds { 18241da177e4SLinus Torvalds ENCODE_HEAD; 18251da177e4SLinus Torvalds 18261da177e4SLinus Torvalds if (!nfserr) { 18271da177e4SLinus Torvalds RESERVE_SPACE(32); 18281da177e4SLinus Torvalds WRITECINFO(create->cr_cinfo); 18291da177e4SLinus Torvalds WRITE32(2); 18301da177e4SLinus Torvalds WRITE32(create->cr_bmval[0]); 18311da177e4SLinus Torvalds WRITE32(create->cr_bmval[1]); 18321da177e4SLinus Torvalds ADJUST_ARGS(); 18331da177e4SLinus Torvalds } 18341da177e4SLinus Torvalds } 18351da177e4SLinus Torvalds 18361da177e4SLinus Torvalds static int 18371da177e4SLinus Torvalds nfsd4_encode_getattr(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_getattr *getattr) 18381da177e4SLinus Torvalds { 18391da177e4SLinus Torvalds struct svc_fh *fhp = getattr->ga_fhp; 18401da177e4SLinus Torvalds int buflen; 18411da177e4SLinus Torvalds 18421da177e4SLinus Torvalds if (nfserr) 18431da177e4SLinus Torvalds return nfserr; 18441da177e4SLinus Torvalds 18451da177e4SLinus Torvalds buflen = resp->end - resp->p - (COMPOUND_ERR_SLACK_SPACE >> 2); 18461da177e4SLinus Torvalds nfserr = nfsd4_encode_fattr(fhp, fhp->fh_export, fhp->fh_dentry, 18471da177e4SLinus Torvalds resp->p, &buflen, getattr->ga_bmval, 18481da177e4SLinus Torvalds resp->rqstp); 18491da177e4SLinus Torvalds 18501da177e4SLinus Torvalds if (!nfserr) 18511da177e4SLinus Torvalds resp->p += buflen; 18521da177e4SLinus Torvalds return nfserr; 18531da177e4SLinus Torvalds } 18541da177e4SLinus Torvalds 18551da177e4SLinus Torvalds static void 18561da177e4SLinus Torvalds nfsd4_encode_getfh(struct nfsd4_compoundres *resp, int nfserr, struct svc_fh *fhp) 18571da177e4SLinus Torvalds { 18581da177e4SLinus Torvalds unsigned int len; 18591da177e4SLinus Torvalds ENCODE_HEAD; 18601da177e4SLinus Torvalds 18611da177e4SLinus Torvalds if (!nfserr) { 18621da177e4SLinus Torvalds len = fhp->fh_handle.fh_size; 18631da177e4SLinus Torvalds RESERVE_SPACE(len + 4); 18641da177e4SLinus Torvalds WRITE32(len); 18651da177e4SLinus Torvalds WRITEMEM(&fhp->fh_handle.fh_base, len); 18661da177e4SLinus Torvalds ADJUST_ARGS(); 18671da177e4SLinus Torvalds } 18681da177e4SLinus Torvalds } 18691da177e4SLinus Torvalds 18701da177e4SLinus Torvalds /* 18711da177e4SLinus Torvalds * Including all fields other than the name, a LOCK4denied structure requires 18721da177e4SLinus Torvalds * 8(clientid) + 4(namelen) + 8(offset) + 8(length) + 4(type) = 32 bytes. 18731da177e4SLinus Torvalds */ 18741da177e4SLinus Torvalds static void 18751da177e4SLinus Torvalds nfsd4_encode_lock_denied(struct nfsd4_compoundres *resp, struct nfsd4_lock_denied *ld) 18761da177e4SLinus Torvalds { 18771da177e4SLinus Torvalds ENCODE_HEAD; 18781da177e4SLinus Torvalds 18791da177e4SLinus Torvalds RESERVE_SPACE(32 + XDR_LEN(ld->ld_sop ? ld->ld_sop->so_owner.len : 0)); 18801da177e4SLinus Torvalds WRITE64(ld->ld_start); 18811da177e4SLinus Torvalds WRITE64(ld->ld_length); 18821da177e4SLinus Torvalds WRITE32(ld->ld_type); 18831da177e4SLinus Torvalds if (ld->ld_sop) { 18841da177e4SLinus Torvalds WRITEMEM(&ld->ld_clientid, 8); 18851da177e4SLinus Torvalds WRITE32(ld->ld_sop->so_owner.len); 18861da177e4SLinus Torvalds WRITEMEM(ld->ld_sop->so_owner.data, ld->ld_sop->so_owner.len); 18871da177e4SLinus Torvalds kref_put(&ld->ld_sop->so_ref, nfs4_free_stateowner); 18881da177e4SLinus Torvalds } else { /* non - nfsv4 lock in conflict, no clientid nor owner */ 18891da177e4SLinus Torvalds WRITE64((u64)0); /* clientid */ 18901da177e4SLinus Torvalds WRITE32(0); /* length of owner name */ 18911da177e4SLinus Torvalds } 18921da177e4SLinus Torvalds ADJUST_ARGS(); 18931da177e4SLinus Torvalds } 18941da177e4SLinus Torvalds 18951da177e4SLinus Torvalds static void 18961da177e4SLinus Torvalds nfsd4_encode_lock(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_lock *lock) 18971da177e4SLinus Torvalds { 18981da177e4SLinus Torvalds ENCODE_SEQID_OP_HEAD; 18991da177e4SLinus Torvalds 19001da177e4SLinus Torvalds if (!nfserr) { 19011da177e4SLinus Torvalds RESERVE_SPACE(4 + sizeof(stateid_t)); 19021da177e4SLinus Torvalds WRITE32(lock->lk_resp_stateid.si_generation); 19031da177e4SLinus Torvalds WRITEMEM(&lock->lk_resp_stateid.si_opaque, sizeof(stateid_opaque_t)); 19041da177e4SLinus Torvalds ADJUST_ARGS(); 19051da177e4SLinus Torvalds } else if (nfserr == nfserr_denied) 19061da177e4SLinus Torvalds nfsd4_encode_lock_denied(resp, &lock->lk_denied); 19071da177e4SLinus Torvalds 19083a65588aSJ. Bruce Fields ENCODE_SEQID_OP_TAIL(lock->lk_replay_owner); 19091da177e4SLinus Torvalds } 19101da177e4SLinus Torvalds 19111da177e4SLinus Torvalds static void 19121da177e4SLinus Torvalds nfsd4_encode_lockt(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_lockt *lockt) 19131da177e4SLinus Torvalds { 19141da177e4SLinus Torvalds if (nfserr == nfserr_denied) 19151da177e4SLinus Torvalds nfsd4_encode_lock_denied(resp, &lockt->lt_denied); 19161da177e4SLinus Torvalds } 19171da177e4SLinus Torvalds 19181da177e4SLinus Torvalds static void 19191da177e4SLinus Torvalds nfsd4_encode_locku(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_locku *locku) 19201da177e4SLinus Torvalds { 19211da177e4SLinus Torvalds ENCODE_SEQID_OP_HEAD; 19221da177e4SLinus Torvalds 19231da177e4SLinus Torvalds if (!nfserr) { 19241da177e4SLinus Torvalds RESERVE_SPACE(sizeof(stateid_t)); 19251da177e4SLinus Torvalds WRITE32(locku->lu_stateid.si_generation); 19261da177e4SLinus Torvalds WRITEMEM(&locku->lu_stateid.si_opaque, sizeof(stateid_opaque_t)); 19271da177e4SLinus Torvalds ADJUST_ARGS(); 19281da177e4SLinus Torvalds } 19291da177e4SLinus Torvalds 19301da177e4SLinus Torvalds ENCODE_SEQID_OP_TAIL(locku->lu_stateowner); 19311da177e4SLinus Torvalds } 19321da177e4SLinus Torvalds 19331da177e4SLinus Torvalds 19341da177e4SLinus Torvalds static void 19351da177e4SLinus Torvalds nfsd4_encode_link(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_link *link) 19361da177e4SLinus Torvalds { 19371da177e4SLinus Torvalds ENCODE_HEAD; 19381da177e4SLinus Torvalds 19391da177e4SLinus Torvalds if (!nfserr) { 19401da177e4SLinus Torvalds RESERVE_SPACE(20); 19411da177e4SLinus Torvalds WRITECINFO(link->li_cinfo); 19421da177e4SLinus Torvalds ADJUST_ARGS(); 19431da177e4SLinus Torvalds } 19441da177e4SLinus Torvalds } 19451da177e4SLinus Torvalds 19461da177e4SLinus Torvalds 19471da177e4SLinus Torvalds static void 19481da177e4SLinus Torvalds nfsd4_encode_open(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_open *open) 19491da177e4SLinus Torvalds { 19501da177e4SLinus Torvalds ENCODE_SEQID_OP_HEAD; 19511da177e4SLinus Torvalds 19521da177e4SLinus Torvalds if (nfserr) 19531da177e4SLinus Torvalds goto out; 19541da177e4SLinus Torvalds 19551da177e4SLinus Torvalds RESERVE_SPACE(36 + sizeof(stateid_t)); 19561da177e4SLinus Torvalds WRITE32(open->op_stateid.si_generation); 19571da177e4SLinus Torvalds WRITEMEM(&open->op_stateid.si_opaque, sizeof(stateid_opaque_t)); 19581da177e4SLinus Torvalds WRITECINFO(open->op_cinfo); 19591da177e4SLinus Torvalds WRITE32(open->op_rflags); 19601da177e4SLinus Torvalds WRITE32(2); 19611da177e4SLinus Torvalds WRITE32(open->op_bmval[0]); 19621da177e4SLinus Torvalds WRITE32(open->op_bmval[1]); 19631da177e4SLinus Torvalds WRITE32(open->op_delegate_type); 19641da177e4SLinus Torvalds ADJUST_ARGS(); 19651da177e4SLinus Torvalds 19661da177e4SLinus Torvalds switch (open->op_delegate_type) { 19671da177e4SLinus Torvalds case NFS4_OPEN_DELEGATE_NONE: 19681da177e4SLinus Torvalds break; 19691da177e4SLinus Torvalds case NFS4_OPEN_DELEGATE_READ: 19701da177e4SLinus Torvalds RESERVE_SPACE(20 + sizeof(stateid_t)); 19711da177e4SLinus Torvalds WRITEMEM(&open->op_delegate_stateid, sizeof(stateid_t)); 19727b190fecSNeilBrown WRITE32(open->op_recall); 19731da177e4SLinus Torvalds 19741da177e4SLinus Torvalds /* 19751da177e4SLinus Torvalds * TODO: ACE's in delegations 19761da177e4SLinus Torvalds */ 19771da177e4SLinus Torvalds WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); 19781da177e4SLinus Torvalds WRITE32(0); 19791da177e4SLinus Torvalds WRITE32(0); 19801da177e4SLinus Torvalds WRITE32(0); /* XXX: is NULL principal ok? */ 19811da177e4SLinus Torvalds ADJUST_ARGS(); 19821da177e4SLinus Torvalds break; 19831da177e4SLinus Torvalds case NFS4_OPEN_DELEGATE_WRITE: 19841da177e4SLinus Torvalds RESERVE_SPACE(32 + sizeof(stateid_t)); 19851da177e4SLinus Torvalds WRITEMEM(&open->op_delegate_stateid, sizeof(stateid_t)); 19861da177e4SLinus Torvalds WRITE32(0); 19871da177e4SLinus Torvalds 19881da177e4SLinus Torvalds /* 19891da177e4SLinus Torvalds * TODO: space_limit's in delegations 19901da177e4SLinus Torvalds */ 19911da177e4SLinus Torvalds WRITE32(NFS4_LIMIT_SIZE); 19921da177e4SLinus Torvalds WRITE32(~(u32)0); 19931da177e4SLinus Torvalds WRITE32(~(u32)0); 19941da177e4SLinus Torvalds 19951da177e4SLinus Torvalds /* 19961da177e4SLinus Torvalds * TODO: ACE's in delegations 19971da177e4SLinus Torvalds */ 19981da177e4SLinus Torvalds WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); 19991da177e4SLinus Torvalds WRITE32(0); 20001da177e4SLinus Torvalds WRITE32(0); 20011da177e4SLinus Torvalds WRITE32(0); /* XXX: is NULL principal ok? */ 20021da177e4SLinus Torvalds ADJUST_ARGS(); 20031da177e4SLinus Torvalds break; 20041da177e4SLinus Torvalds default: 20051da177e4SLinus Torvalds BUG(); 20061da177e4SLinus Torvalds } 20071da177e4SLinus Torvalds /* XXX save filehandle here */ 20081da177e4SLinus Torvalds out: 20091da177e4SLinus Torvalds ENCODE_SEQID_OP_TAIL(open->op_stateowner); 20101da177e4SLinus Torvalds } 20111da177e4SLinus Torvalds 20121da177e4SLinus Torvalds static void 20131da177e4SLinus Torvalds nfsd4_encode_open_confirm(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_open_confirm *oc) 20141da177e4SLinus Torvalds { 20151da177e4SLinus Torvalds ENCODE_SEQID_OP_HEAD; 20161da177e4SLinus Torvalds 20171da177e4SLinus Torvalds if (!nfserr) { 20181da177e4SLinus Torvalds RESERVE_SPACE(sizeof(stateid_t)); 20191da177e4SLinus Torvalds WRITE32(oc->oc_resp_stateid.si_generation); 20201da177e4SLinus Torvalds WRITEMEM(&oc->oc_resp_stateid.si_opaque, sizeof(stateid_opaque_t)); 20211da177e4SLinus Torvalds ADJUST_ARGS(); 20221da177e4SLinus Torvalds } 20231da177e4SLinus Torvalds 20241da177e4SLinus Torvalds ENCODE_SEQID_OP_TAIL(oc->oc_stateowner); 20251da177e4SLinus Torvalds } 20261da177e4SLinus Torvalds 20271da177e4SLinus Torvalds static void 20281da177e4SLinus Torvalds nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_open_downgrade *od) 20291da177e4SLinus Torvalds { 20301da177e4SLinus Torvalds ENCODE_SEQID_OP_HEAD; 20311da177e4SLinus Torvalds 20321da177e4SLinus Torvalds if (!nfserr) { 20331da177e4SLinus Torvalds RESERVE_SPACE(sizeof(stateid_t)); 20341da177e4SLinus Torvalds WRITE32(od->od_stateid.si_generation); 20351da177e4SLinus Torvalds WRITEMEM(&od->od_stateid.si_opaque, sizeof(stateid_opaque_t)); 20361da177e4SLinus Torvalds ADJUST_ARGS(); 20371da177e4SLinus Torvalds } 20381da177e4SLinus Torvalds 20391da177e4SLinus Torvalds ENCODE_SEQID_OP_TAIL(od->od_stateowner); 20401da177e4SLinus Torvalds } 20411da177e4SLinus Torvalds 20421da177e4SLinus Torvalds static int 20431da177e4SLinus Torvalds nfsd4_encode_read(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_read *read) 20441da177e4SLinus Torvalds { 20451da177e4SLinus Torvalds u32 eof; 20461da177e4SLinus Torvalds int v, pn; 20471da177e4SLinus Torvalds unsigned long maxcount; 20481da177e4SLinus Torvalds long len; 20491da177e4SLinus Torvalds ENCODE_HEAD; 20501da177e4SLinus Torvalds 20511da177e4SLinus Torvalds if (nfserr) 20521da177e4SLinus Torvalds return nfserr; 20531da177e4SLinus Torvalds if (resp->xbuf->page_len) 20541da177e4SLinus Torvalds return nfserr_resource; 20551da177e4SLinus Torvalds 20561da177e4SLinus Torvalds RESERVE_SPACE(8); /* eof flag and byte count */ 20571da177e4SLinus Torvalds 20581da177e4SLinus Torvalds maxcount = NFSSVC_MAXBLKSIZE; 20591da177e4SLinus Torvalds if (maxcount > read->rd_length) 20601da177e4SLinus Torvalds maxcount = read->rd_length; 20611da177e4SLinus Torvalds 20621da177e4SLinus Torvalds len = maxcount; 20631da177e4SLinus Torvalds v = 0; 20641da177e4SLinus Torvalds while (len > 0) { 20651da177e4SLinus Torvalds pn = resp->rqstp->rq_resused; 20661da177e4SLinus Torvalds svc_take_page(resp->rqstp); 20671da177e4SLinus Torvalds read->rd_iov[v].iov_base = page_address(resp->rqstp->rq_respages[pn]); 20681da177e4SLinus Torvalds read->rd_iov[v].iov_len = len < PAGE_SIZE ? len : PAGE_SIZE; 20691da177e4SLinus Torvalds v++; 20701da177e4SLinus Torvalds len -= PAGE_SIZE; 20711da177e4SLinus Torvalds } 20721da177e4SLinus Torvalds read->rd_vlen = v; 20731da177e4SLinus Torvalds 20741da177e4SLinus Torvalds nfserr = nfsd_read(read->rd_rqstp, read->rd_fhp, read->rd_filp, 20751da177e4SLinus Torvalds read->rd_offset, read->rd_iov, read->rd_vlen, 20761da177e4SLinus Torvalds &maxcount); 20771da177e4SLinus Torvalds 20781da177e4SLinus Torvalds if (nfserr == nfserr_symlink) 20791da177e4SLinus Torvalds nfserr = nfserr_inval; 20801da177e4SLinus Torvalds if (nfserr) 20811da177e4SLinus Torvalds return nfserr; 20821da177e4SLinus Torvalds eof = (read->rd_offset + maxcount >= read->rd_fhp->fh_dentry->d_inode->i_size); 20831da177e4SLinus Torvalds 20841da177e4SLinus Torvalds WRITE32(eof); 20851da177e4SLinus Torvalds WRITE32(maxcount); 20861da177e4SLinus Torvalds ADJUST_ARGS(); 2087*6ed6deccSNeilBrown resp->xbuf->head[0].iov_len = (char*)p 2088*6ed6deccSNeilBrown - (char*)resp->xbuf->head[0].iov_base; 20891da177e4SLinus Torvalds resp->xbuf->page_len = maxcount; 20901da177e4SLinus Torvalds 2091*6ed6deccSNeilBrown /* Use rest of head for padding and remaining ops: */ 2092*6ed6deccSNeilBrown resp->rqstp->rq_restailpage = 0; 2093*6ed6deccSNeilBrown resp->xbuf->tail[0].iov_base = p; 20941da177e4SLinus Torvalds resp->xbuf->tail[0].iov_len = 0; 20951da177e4SLinus Torvalds if (maxcount&3) { 2096*6ed6deccSNeilBrown RESERVE_SPACE(4); 2097*6ed6deccSNeilBrown WRITE32(0); 20981da177e4SLinus Torvalds resp->xbuf->tail[0].iov_base += maxcount&3; 20991da177e4SLinus Torvalds resp->xbuf->tail[0].iov_len = 4 - (maxcount&3); 2100*6ed6deccSNeilBrown ADJUST_ARGS(); 21011da177e4SLinus Torvalds } 21021da177e4SLinus Torvalds return 0; 21031da177e4SLinus Torvalds } 21041da177e4SLinus Torvalds 21051da177e4SLinus Torvalds static int 21061da177e4SLinus Torvalds nfsd4_encode_readlink(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_readlink *readlink) 21071da177e4SLinus Torvalds { 21081da177e4SLinus Torvalds int maxcount; 21091da177e4SLinus Torvalds char *page; 21101da177e4SLinus Torvalds ENCODE_HEAD; 21111da177e4SLinus Torvalds 21121da177e4SLinus Torvalds if (nfserr) 21131da177e4SLinus Torvalds return nfserr; 21141da177e4SLinus Torvalds if (resp->xbuf->page_len) 21151da177e4SLinus Torvalds return nfserr_resource; 21161da177e4SLinus Torvalds 21171da177e4SLinus Torvalds svc_take_page(resp->rqstp); 21181da177e4SLinus Torvalds page = page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused-1]); 21191da177e4SLinus Torvalds 21201da177e4SLinus Torvalds maxcount = PAGE_SIZE; 21211da177e4SLinus Torvalds RESERVE_SPACE(4); 21221da177e4SLinus Torvalds 21231da177e4SLinus Torvalds /* 21241da177e4SLinus Torvalds * XXX: By default, the ->readlink() VFS op will truncate symlinks 21251da177e4SLinus Torvalds * if they would overflow the buffer. Is this kosher in NFSv4? If 21261da177e4SLinus Torvalds * not, one easy fix is: if ->readlink() precisely fills the buffer, 21271da177e4SLinus Torvalds * assume that truncation occurred, and return NFS4ERR_RESOURCE. 21281da177e4SLinus Torvalds */ 21291da177e4SLinus Torvalds nfserr = nfsd_readlink(readlink->rl_rqstp, readlink->rl_fhp, page, &maxcount); 21301da177e4SLinus Torvalds if (nfserr == nfserr_isdir) 21311da177e4SLinus Torvalds return nfserr_inval; 21321da177e4SLinus Torvalds if (nfserr) 21331da177e4SLinus Torvalds return nfserr; 21341da177e4SLinus Torvalds 21351da177e4SLinus Torvalds WRITE32(maxcount); 21361da177e4SLinus Torvalds ADJUST_ARGS(); 2137*6ed6deccSNeilBrown resp->xbuf->head[0].iov_len = (char*)p 2138*6ed6deccSNeilBrown - (char*)resp->xbuf->head[0].iov_base; 21391da177e4SLinus Torvalds resp->xbuf->page_len = maxcount; 2140*6ed6deccSNeilBrown 2141*6ed6deccSNeilBrown /* Use rest of head for padding and remaining ops: */ 2142*6ed6deccSNeilBrown resp->rqstp->rq_restailpage = 0; 2143*6ed6deccSNeilBrown resp->xbuf->tail[0].iov_base = p; 2144*6ed6deccSNeilBrown resp->xbuf->tail[0].iov_len = 0; 21451da177e4SLinus Torvalds if (maxcount&3) { 2146*6ed6deccSNeilBrown RESERVE_SPACE(4); 2147*6ed6deccSNeilBrown WRITE32(0); 21481da177e4SLinus Torvalds resp->xbuf->tail[0].iov_base += maxcount&3; 21491da177e4SLinus Torvalds resp->xbuf->tail[0].iov_len = 4 - (maxcount&3); 2150*6ed6deccSNeilBrown ADJUST_ARGS(); 21511da177e4SLinus Torvalds } 21521da177e4SLinus Torvalds return 0; 21531da177e4SLinus Torvalds } 21541da177e4SLinus Torvalds 21551da177e4SLinus Torvalds static int 21561da177e4SLinus Torvalds nfsd4_encode_readdir(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_readdir *readdir) 21571da177e4SLinus Torvalds { 21581da177e4SLinus Torvalds int maxcount; 21591da177e4SLinus Torvalds loff_t offset; 21601da177e4SLinus Torvalds u32 *page, *savep; 21611da177e4SLinus Torvalds ENCODE_HEAD; 21621da177e4SLinus Torvalds 21631da177e4SLinus Torvalds if (nfserr) 21641da177e4SLinus Torvalds return nfserr; 21651da177e4SLinus Torvalds if (resp->xbuf->page_len) 21661da177e4SLinus Torvalds return nfserr_resource; 21671da177e4SLinus Torvalds 21681da177e4SLinus Torvalds RESERVE_SPACE(8); /* verifier */ 21691da177e4SLinus Torvalds savep = p; 21701da177e4SLinus Torvalds 21711da177e4SLinus Torvalds /* XXX: Following NFSv3, we ignore the READDIR verifier for now. */ 21721da177e4SLinus Torvalds WRITE32(0); 21731da177e4SLinus Torvalds WRITE32(0); 21741da177e4SLinus Torvalds ADJUST_ARGS(); 21751da177e4SLinus Torvalds resp->xbuf->head[0].iov_len = ((char*)resp->p) - (char*)resp->xbuf->head[0].iov_base; 21761da177e4SLinus Torvalds 21771da177e4SLinus Torvalds maxcount = PAGE_SIZE; 21781da177e4SLinus Torvalds if (maxcount > readdir->rd_maxcount) 21791da177e4SLinus Torvalds maxcount = readdir->rd_maxcount; 21801da177e4SLinus Torvalds 21811da177e4SLinus Torvalds /* 21821da177e4SLinus Torvalds * Convert from bytes to words, account for the two words already 21831da177e4SLinus Torvalds * written, make sure to leave two words at the end for the next 21841da177e4SLinus Torvalds * pointer and eof field. 21851da177e4SLinus Torvalds */ 21861da177e4SLinus Torvalds maxcount = (maxcount >> 2) - 4; 21871da177e4SLinus Torvalds if (maxcount < 0) { 21881da177e4SLinus Torvalds nfserr = nfserr_toosmall; 21891da177e4SLinus Torvalds goto err_no_verf; 21901da177e4SLinus Torvalds } 21911da177e4SLinus Torvalds 21921da177e4SLinus Torvalds svc_take_page(resp->rqstp); 21931da177e4SLinus Torvalds page = page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused-1]); 21941da177e4SLinus Torvalds readdir->common.err = 0; 21951da177e4SLinus Torvalds readdir->buflen = maxcount; 21961da177e4SLinus Torvalds readdir->buffer = page; 21971da177e4SLinus Torvalds readdir->offset = NULL; 21981da177e4SLinus Torvalds 21991da177e4SLinus Torvalds offset = readdir->rd_cookie; 22001da177e4SLinus Torvalds nfserr = nfsd_readdir(readdir->rd_rqstp, readdir->rd_fhp, 22011da177e4SLinus Torvalds &offset, 22021da177e4SLinus Torvalds &readdir->common, nfsd4_encode_dirent); 22031da177e4SLinus Torvalds if (nfserr == nfs_ok && 22041da177e4SLinus Torvalds readdir->common.err == nfserr_toosmall && 22051da177e4SLinus Torvalds readdir->buffer == page) 22061da177e4SLinus Torvalds nfserr = nfserr_toosmall; 22071da177e4SLinus Torvalds if (nfserr == nfserr_symlink) 22081da177e4SLinus Torvalds nfserr = nfserr_notdir; 22091da177e4SLinus Torvalds if (nfserr) 22101da177e4SLinus Torvalds goto err_no_verf; 22111da177e4SLinus Torvalds 22121da177e4SLinus Torvalds if (readdir->offset) 22131da177e4SLinus Torvalds xdr_encode_hyper(readdir->offset, offset); 22141da177e4SLinus Torvalds 22151da177e4SLinus Torvalds p = readdir->buffer; 22161da177e4SLinus Torvalds *p++ = 0; /* no more entries */ 22171da177e4SLinus Torvalds *p++ = htonl(readdir->common.err == nfserr_eof); 22181da177e4SLinus Torvalds resp->xbuf->page_len = ((char*)p) - (char*)page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused-1]); 22191da177e4SLinus Torvalds 22201da177e4SLinus Torvalds /* allocate a page for the tail */ 22211da177e4SLinus Torvalds svc_take_page(resp->rqstp); 22221da177e4SLinus Torvalds resp->xbuf->tail[0].iov_base = 22231da177e4SLinus Torvalds page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused-1]); 22241da177e4SLinus Torvalds resp->rqstp->rq_restailpage = resp->rqstp->rq_resused-1; 22251da177e4SLinus Torvalds resp->xbuf->tail[0].iov_len = 0; 22261da177e4SLinus Torvalds resp->p = resp->xbuf->tail[0].iov_base; 22271da177e4SLinus Torvalds resp->end = resp->p + PAGE_SIZE/4; 22281da177e4SLinus Torvalds 22291da177e4SLinus Torvalds return 0; 22301da177e4SLinus Torvalds err_no_verf: 22311da177e4SLinus Torvalds p = savep; 22321da177e4SLinus Torvalds ADJUST_ARGS(); 22331da177e4SLinus Torvalds return nfserr; 22341da177e4SLinus Torvalds } 22351da177e4SLinus Torvalds 22361da177e4SLinus Torvalds static void 22371da177e4SLinus Torvalds nfsd4_encode_remove(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_remove *remove) 22381da177e4SLinus Torvalds { 22391da177e4SLinus Torvalds ENCODE_HEAD; 22401da177e4SLinus Torvalds 22411da177e4SLinus Torvalds if (!nfserr) { 22421da177e4SLinus Torvalds RESERVE_SPACE(20); 22431da177e4SLinus Torvalds WRITECINFO(remove->rm_cinfo); 22441da177e4SLinus Torvalds ADJUST_ARGS(); 22451da177e4SLinus Torvalds } 22461da177e4SLinus Torvalds } 22471da177e4SLinus Torvalds 22481da177e4SLinus Torvalds static void 22491da177e4SLinus Torvalds nfsd4_encode_rename(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_rename *rename) 22501da177e4SLinus Torvalds { 22511da177e4SLinus Torvalds ENCODE_HEAD; 22521da177e4SLinus Torvalds 22531da177e4SLinus Torvalds if (!nfserr) { 22541da177e4SLinus Torvalds RESERVE_SPACE(40); 22551da177e4SLinus Torvalds WRITECINFO(rename->rn_sinfo); 22561da177e4SLinus Torvalds WRITECINFO(rename->rn_tinfo); 22571da177e4SLinus Torvalds ADJUST_ARGS(); 22581da177e4SLinus Torvalds } 22591da177e4SLinus Torvalds } 22601da177e4SLinus Torvalds 22611da177e4SLinus Torvalds /* 22621da177e4SLinus Torvalds * The SETATTR encode routine is special -- it always encodes a bitmap, 22631da177e4SLinus Torvalds * regardless of the error status. 22641da177e4SLinus Torvalds */ 22651da177e4SLinus Torvalds static void 22661da177e4SLinus Torvalds nfsd4_encode_setattr(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_setattr *setattr) 22671da177e4SLinus Torvalds { 22681da177e4SLinus Torvalds ENCODE_HEAD; 22691da177e4SLinus Torvalds 22701da177e4SLinus Torvalds RESERVE_SPACE(12); 22711da177e4SLinus Torvalds if (nfserr) { 22721da177e4SLinus Torvalds WRITE32(2); 22731da177e4SLinus Torvalds WRITE32(0); 22741da177e4SLinus Torvalds WRITE32(0); 22751da177e4SLinus Torvalds } 22761da177e4SLinus Torvalds else { 22771da177e4SLinus Torvalds WRITE32(2); 22781da177e4SLinus Torvalds WRITE32(setattr->sa_bmval[0]); 22791da177e4SLinus Torvalds WRITE32(setattr->sa_bmval[1]); 22801da177e4SLinus Torvalds } 22811da177e4SLinus Torvalds ADJUST_ARGS(); 22821da177e4SLinus Torvalds } 22831da177e4SLinus Torvalds 22841da177e4SLinus Torvalds static void 22851da177e4SLinus Torvalds nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_setclientid *scd) 22861da177e4SLinus Torvalds { 22871da177e4SLinus Torvalds ENCODE_HEAD; 22881da177e4SLinus Torvalds 22891da177e4SLinus Torvalds if (!nfserr) { 22901da177e4SLinus Torvalds RESERVE_SPACE(8 + sizeof(nfs4_verifier)); 22911da177e4SLinus Torvalds WRITEMEM(&scd->se_clientid, 8); 22921da177e4SLinus Torvalds WRITEMEM(&scd->se_confirm, sizeof(nfs4_verifier)); 22931da177e4SLinus Torvalds ADJUST_ARGS(); 22941da177e4SLinus Torvalds } 22951da177e4SLinus Torvalds else if (nfserr == nfserr_clid_inuse) { 22961da177e4SLinus Torvalds RESERVE_SPACE(8); 22971da177e4SLinus Torvalds WRITE32(0); 22981da177e4SLinus Torvalds WRITE32(0); 22991da177e4SLinus Torvalds ADJUST_ARGS(); 23001da177e4SLinus Torvalds } 23011da177e4SLinus Torvalds } 23021da177e4SLinus Torvalds 23031da177e4SLinus Torvalds static void 23041da177e4SLinus Torvalds nfsd4_encode_write(struct nfsd4_compoundres *resp, int nfserr, struct nfsd4_write *write) 23051da177e4SLinus Torvalds { 23061da177e4SLinus Torvalds ENCODE_HEAD; 23071da177e4SLinus Torvalds 23081da177e4SLinus Torvalds if (!nfserr) { 23091da177e4SLinus Torvalds RESERVE_SPACE(16); 23101da177e4SLinus Torvalds WRITE32(write->wr_bytes_written); 23111da177e4SLinus Torvalds WRITE32(write->wr_how_written); 23121da177e4SLinus Torvalds WRITEMEM(write->wr_verifier.data, 8); 23131da177e4SLinus Torvalds ADJUST_ARGS(); 23141da177e4SLinus Torvalds } 23151da177e4SLinus Torvalds } 23161da177e4SLinus Torvalds 23171da177e4SLinus Torvalds void 23181da177e4SLinus Torvalds nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op) 23191da177e4SLinus Torvalds { 23201da177e4SLinus Torvalds u32 *statp; 23211da177e4SLinus Torvalds ENCODE_HEAD; 23221da177e4SLinus Torvalds 23231da177e4SLinus Torvalds RESERVE_SPACE(8); 23241da177e4SLinus Torvalds WRITE32(op->opnum); 23251da177e4SLinus Torvalds statp = p++; /* to be backfilled at the end */ 23261da177e4SLinus Torvalds ADJUST_ARGS(); 23271da177e4SLinus Torvalds 23281da177e4SLinus Torvalds switch (op->opnum) { 23291da177e4SLinus Torvalds case OP_ACCESS: 23301da177e4SLinus Torvalds nfsd4_encode_access(resp, op->status, &op->u.access); 23311da177e4SLinus Torvalds break; 23321da177e4SLinus Torvalds case OP_CLOSE: 23331da177e4SLinus Torvalds nfsd4_encode_close(resp, op->status, &op->u.close); 23341da177e4SLinus Torvalds break; 23351da177e4SLinus Torvalds case OP_COMMIT: 23361da177e4SLinus Torvalds nfsd4_encode_commit(resp, op->status, &op->u.commit); 23371da177e4SLinus Torvalds break; 23381da177e4SLinus Torvalds case OP_CREATE: 23391da177e4SLinus Torvalds nfsd4_encode_create(resp, op->status, &op->u.create); 23401da177e4SLinus Torvalds break; 23411da177e4SLinus Torvalds case OP_DELEGRETURN: 23421da177e4SLinus Torvalds break; 23431da177e4SLinus Torvalds case OP_GETATTR: 23441da177e4SLinus Torvalds op->status = nfsd4_encode_getattr(resp, op->status, &op->u.getattr); 23451da177e4SLinus Torvalds break; 23461da177e4SLinus Torvalds case OP_GETFH: 23471da177e4SLinus Torvalds nfsd4_encode_getfh(resp, op->status, op->u.getfh); 23481da177e4SLinus Torvalds break; 23491da177e4SLinus Torvalds case OP_LINK: 23501da177e4SLinus Torvalds nfsd4_encode_link(resp, op->status, &op->u.link); 23511da177e4SLinus Torvalds break; 23521da177e4SLinus Torvalds case OP_LOCK: 23531da177e4SLinus Torvalds nfsd4_encode_lock(resp, op->status, &op->u.lock); 23541da177e4SLinus Torvalds break; 23551da177e4SLinus Torvalds case OP_LOCKT: 23561da177e4SLinus Torvalds nfsd4_encode_lockt(resp, op->status, &op->u.lockt); 23571da177e4SLinus Torvalds break; 23581da177e4SLinus Torvalds case OP_LOCKU: 23591da177e4SLinus Torvalds nfsd4_encode_locku(resp, op->status, &op->u.locku); 23601da177e4SLinus Torvalds break; 23611da177e4SLinus Torvalds case OP_LOOKUP: 23621da177e4SLinus Torvalds break; 23631da177e4SLinus Torvalds case OP_LOOKUPP: 23641da177e4SLinus Torvalds break; 23651da177e4SLinus Torvalds case OP_NVERIFY: 23661da177e4SLinus Torvalds break; 23671da177e4SLinus Torvalds case OP_OPEN: 23681da177e4SLinus Torvalds nfsd4_encode_open(resp, op->status, &op->u.open); 23691da177e4SLinus Torvalds break; 23701da177e4SLinus Torvalds case OP_OPEN_CONFIRM: 23711da177e4SLinus Torvalds nfsd4_encode_open_confirm(resp, op->status, &op->u.open_confirm); 23721da177e4SLinus Torvalds break; 23731da177e4SLinus Torvalds case OP_OPEN_DOWNGRADE: 23741da177e4SLinus Torvalds nfsd4_encode_open_downgrade(resp, op->status, &op->u.open_downgrade); 23751da177e4SLinus Torvalds break; 23761da177e4SLinus Torvalds case OP_PUTFH: 23771da177e4SLinus Torvalds break; 23781da177e4SLinus Torvalds case OP_PUTROOTFH: 23791da177e4SLinus Torvalds break; 23801da177e4SLinus Torvalds case OP_READ: 23811da177e4SLinus Torvalds op->status = nfsd4_encode_read(resp, op->status, &op->u.read); 23821da177e4SLinus Torvalds break; 23831da177e4SLinus Torvalds case OP_READDIR: 23841da177e4SLinus Torvalds op->status = nfsd4_encode_readdir(resp, op->status, &op->u.readdir); 23851da177e4SLinus Torvalds break; 23861da177e4SLinus Torvalds case OP_READLINK: 23871da177e4SLinus Torvalds op->status = nfsd4_encode_readlink(resp, op->status, &op->u.readlink); 23881da177e4SLinus Torvalds break; 23891da177e4SLinus Torvalds case OP_REMOVE: 23901da177e4SLinus Torvalds nfsd4_encode_remove(resp, op->status, &op->u.remove); 23911da177e4SLinus Torvalds break; 23921da177e4SLinus Torvalds case OP_RENAME: 23931da177e4SLinus Torvalds nfsd4_encode_rename(resp, op->status, &op->u.rename); 23941da177e4SLinus Torvalds break; 23951da177e4SLinus Torvalds case OP_RENEW: 23961da177e4SLinus Torvalds break; 23971da177e4SLinus Torvalds case OP_RESTOREFH: 23981da177e4SLinus Torvalds break; 23991da177e4SLinus Torvalds case OP_SAVEFH: 24001da177e4SLinus Torvalds break; 24011da177e4SLinus Torvalds case OP_SETATTR: 24021da177e4SLinus Torvalds nfsd4_encode_setattr(resp, op->status, &op->u.setattr); 24031da177e4SLinus Torvalds break; 24041da177e4SLinus Torvalds case OP_SETCLIENTID: 24051da177e4SLinus Torvalds nfsd4_encode_setclientid(resp, op->status, &op->u.setclientid); 24061da177e4SLinus Torvalds break; 24071da177e4SLinus Torvalds case OP_SETCLIENTID_CONFIRM: 24081da177e4SLinus Torvalds break; 24091da177e4SLinus Torvalds case OP_VERIFY: 24101da177e4SLinus Torvalds break; 24111da177e4SLinus Torvalds case OP_WRITE: 24121da177e4SLinus Torvalds nfsd4_encode_write(resp, op->status, &op->u.write); 24131da177e4SLinus Torvalds break; 24141da177e4SLinus Torvalds case OP_RELEASE_LOCKOWNER: 24151da177e4SLinus Torvalds break; 24161da177e4SLinus Torvalds default: 24171da177e4SLinus Torvalds break; 24181da177e4SLinus Torvalds } 24191da177e4SLinus Torvalds 24201da177e4SLinus Torvalds /* 24211da177e4SLinus Torvalds * Note: We write the status directly, instead of using WRITE32(), 24221da177e4SLinus Torvalds * since it is already in network byte order. 24231da177e4SLinus Torvalds */ 24241da177e4SLinus Torvalds *statp = op->status; 24251da177e4SLinus Torvalds } 24261da177e4SLinus Torvalds 24271da177e4SLinus Torvalds /* 24281da177e4SLinus Torvalds * Encode the reply stored in the stateowner reply cache 24291da177e4SLinus Torvalds * 24301da177e4SLinus Torvalds * XDR note: do not encode rp->rp_buflen: the buffer contains the 24311da177e4SLinus Torvalds * previously sent already encoded operation. 24321da177e4SLinus Torvalds * 24331da177e4SLinus Torvalds * called with nfs4_lock_state() held 24341da177e4SLinus Torvalds */ 24351da177e4SLinus Torvalds void 24361da177e4SLinus Torvalds nfsd4_encode_replay(struct nfsd4_compoundres *resp, struct nfsd4_op *op) 24371da177e4SLinus Torvalds { 24381da177e4SLinus Torvalds ENCODE_HEAD; 24391da177e4SLinus Torvalds struct nfs4_replay *rp = op->replay; 24401da177e4SLinus Torvalds 24411da177e4SLinus Torvalds BUG_ON(!rp); 24421da177e4SLinus Torvalds 24431da177e4SLinus Torvalds RESERVE_SPACE(8); 24441da177e4SLinus Torvalds WRITE32(op->opnum); 24451da177e4SLinus Torvalds *p++ = rp->rp_status; /* already xdr'ed */ 24461da177e4SLinus Torvalds ADJUST_ARGS(); 24471da177e4SLinus Torvalds 24481da177e4SLinus Torvalds RESERVE_SPACE(rp->rp_buflen); 24491da177e4SLinus Torvalds WRITEMEM(rp->rp_buf, rp->rp_buflen); 24501da177e4SLinus Torvalds ADJUST_ARGS(); 24511da177e4SLinus Torvalds } 24521da177e4SLinus Torvalds 24531da177e4SLinus Torvalds /* 24541da177e4SLinus Torvalds * END OF "GENERIC" ENCODE ROUTINES. 24551da177e4SLinus Torvalds */ 24561da177e4SLinus Torvalds 24571da177e4SLinus Torvalds int 24581da177e4SLinus Torvalds nfs4svc_encode_voidres(struct svc_rqst *rqstp, u32 *p, void *dummy) 24591da177e4SLinus Torvalds { 24601da177e4SLinus Torvalds return xdr_ressize_check(rqstp, p); 24611da177e4SLinus Torvalds } 24621da177e4SLinus Torvalds 24631da177e4SLinus Torvalds void nfsd4_release_compoundargs(struct nfsd4_compoundargs *args) 24641da177e4SLinus Torvalds { 24651da177e4SLinus Torvalds if (args->ops != args->iops) { 24661da177e4SLinus Torvalds kfree(args->ops); 24671da177e4SLinus Torvalds args->ops = args->iops; 24681da177e4SLinus Torvalds } 24691da177e4SLinus Torvalds kfree(args->tmpp); 24701da177e4SLinus Torvalds args->tmpp = NULL; 24711da177e4SLinus Torvalds while (args->to_free) { 24721da177e4SLinus Torvalds struct tmpbuf *tb = args->to_free; 24731da177e4SLinus Torvalds args->to_free = tb->next; 24741da177e4SLinus Torvalds tb->release(tb->buf); 24751da177e4SLinus Torvalds kfree(tb); 24761da177e4SLinus Torvalds } 24771da177e4SLinus Torvalds } 24781da177e4SLinus Torvalds 24791da177e4SLinus Torvalds int 24801da177e4SLinus Torvalds nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, u32 *p, struct nfsd4_compoundargs *args) 24811da177e4SLinus Torvalds { 24821da177e4SLinus Torvalds int status; 24831da177e4SLinus Torvalds 24841da177e4SLinus Torvalds args->p = p; 24851da177e4SLinus Torvalds args->end = rqstp->rq_arg.head[0].iov_base + rqstp->rq_arg.head[0].iov_len; 24861da177e4SLinus Torvalds args->pagelist = rqstp->rq_arg.pages; 24871da177e4SLinus Torvalds args->pagelen = rqstp->rq_arg.page_len; 24881da177e4SLinus Torvalds args->tmpp = NULL; 24891da177e4SLinus Torvalds args->to_free = NULL; 24901da177e4SLinus Torvalds args->ops = args->iops; 24911da177e4SLinus Torvalds args->rqstp = rqstp; 24921da177e4SLinus Torvalds 24931da177e4SLinus Torvalds status = nfsd4_decode_compound(args); 24941da177e4SLinus Torvalds if (status) { 24951da177e4SLinus Torvalds nfsd4_release_compoundargs(args); 24961da177e4SLinus Torvalds } 24971da177e4SLinus Torvalds return !status; 24981da177e4SLinus Torvalds } 24991da177e4SLinus Torvalds 25001da177e4SLinus Torvalds int 25011da177e4SLinus Torvalds nfs4svc_encode_compoundres(struct svc_rqst *rqstp, u32 *p, struct nfsd4_compoundres *resp) 25021da177e4SLinus Torvalds { 25031da177e4SLinus Torvalds /* 25041da177e4SLinus Torvalds * All that remains is to write the tag and operation count... 25051da177e4SLinus Torvalds */ 25061da177e4SLinus Torvalds struct kvec *iov; 25071da177e4SLinus Torvalds p = resp->tagp; 25081da177e4SLinus Torvalds *p++ = htonl(resp->taglen); 25091da177e4SLinus Torvalds memcpy(p, resp->tag, resp->taglen); 25101da177e4SLinus Torvalds p += XDR_QUADLEN(resp->taglen); 25111da177e4SLinus Torvalds *p++ = htonl(resp->opcnt); 25121da177e4SLinus Torvalds 25131da177e4SLinus Torvalds if (rqstp->rq_res.page_len) 25141da177e4SLinus Torvalds iov = &rqstp->rq_res.tail[0]; 25151da177e4SLinus Torvalds else 25161da177e4SLinus Torvalds iov = &rqstp->rq_res.head[0]; 25171da177e4SLinus Torvalds iov->iov_len = ((char*)resp->p) - (char*)iov->iov_base; 25181da177e4SLinus Torvalds BUG_ON(iov->iov_len > PAGE_SIZE); 25191da177e4SLinus Torvalds return 1; 25201da177e4SLinus Torvalds } 25211da177e4SLinus Torvalds 25221da177e4SLinus Torvalds /* 25231da177e4SLinus Torvalds * Local variables: 25241da177e4SLinus Torvalds * c-basic-offset: 8 25251da177e4SLinus Torvalds * End: 25261da177e4SLinus Torvalds */ 2527