Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | * Server-side XDR for NFSv4 |
| 3 | * |
| 4 | * Copyright (c) 2002 The Regents of the University of Michigan. |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * Kendrick Smith <kmsmith@umich.edu> |
| 8 | * Andy Adamson <andros@umich.edu> |
| 9 | * |
| 10 | * Redistribution and use in source and binary forms, with or without |
| 11 | * modification, are permitted provided that the following conditions |
| 12 | * are met: |
| 13 | * |
| 14 | * 1. Redistributions of source code must retain the above copyright |
| 15 | * notice, this list of conditions and the following disclaimer. |
| 16 | * 2. Redistributions in binary form must reproduce the above copyright |
| 17 | * notice, this list of conditions and the following disclaimer in the |
| 18 | * documentation and/or other materials provided with the distribution. |
| 19 | * 3. Neither the name of the University nor the names of its |
| 20 | * contributors may be used to endorse or promote products derived |
| 21 | * from this software without specific prior written permission. |
| 22 | * |
| 23 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| 24 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 25 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| 26 | * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 27 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 28 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 29 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| 30 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| 31 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 32 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 33 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 34 | * |
| 35 | * TODO: Neil Brown made the following observation: We currently |
| 36 | * initially reserve NFSD_BUFSIZE space on the transmit queue and |
| 37 | * never release any of that until the request is complete. |
| 38 | * It would be good to calculate a new maximum response size while |
| 39 | * decoding the COMPOUND, and call svc_reserve with this number |
| 40 | * at the end of nfs4svc_decode_compoundargs. |
| 41 | */ |
| 42 | |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 43 | #include <linux/slab.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 44 | #include <linux/namei.h> |
Boaz Harrosh | 341eb18 | 2009-12-03 20:29:12 +0200 | [diff] [blame] | 45 | #include <linux/statfs.h> |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 46 | #include <linux/utsname.h> |
J. Bruce Fields | 4796f45 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 47 | #include <linux/sunrpc/svcauth_gss.h> |
Boaz Harrosh | 9a74af2 | 2009-12-03 20:30:56 +0200 | [diff] [blame] | 48 | |
J. Bruce Fields | 2ca72e1 | 2011-01-04 17:37:15 -0500 | [diff] [blame] | 49 | #include "idmap.h" |
| 50 | #include "acl.h" |
Boaz Harrosh | 9a74af2 | 2009-12-03 20:30:56 +0200 | [diff] [blame] | 51 | #include "xdr4.h" |
J. Bruce Fields | 0a3adad | 2009-11-04 18:12:35 -0500 | [diff] [blame] | 52 | #include "vfs.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 53 | |
J. Bruce Fields | 2ca72e1 | 2011-01-04 17:37:15 -0500 | [diff] [blame] | 54 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | #define NFSDDBG_FACILITY NFSDDBG_XDR |
| 56 | |
J.Bruce Fields | 42ca099 | 2006-10-04 02:16:20 -0700 | [diff] [blame] | 57 | /* |
| 58 | * As per referral draft, the fsid for a referral MUST be different from the fsid of the containing |
| 59 | * directory in order to indicate to the client that a filesystem boundary is present |
| 60 | * We use a fixed fsid for a referral |
| 61 | */ |
| 62 | #define NFS4_REFERRAL_FSID_MAJOR 0x8000000ULL |
| 63 | #define NFS4_REFERRAL_FSID_MINOR 0x8000000ULL |
| 64 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 65 | static __be32 |
| 66 | check_filename(char *str, int len, __be32 err) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | { |
| 68 | int i; |
| 69 | |
| 70 | if (len == 0) |
| 71 | return nfserr_inval; |
| 72 | if (isdotent(str, len)) |
| 73 | return err; |
| 74 | for (i = 0; i < len; i++) |
| 75 | if (str[i] == '/') |
| 76 | return err; |
| 77 | return 0; |
| 78 | } |
| 79 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | #define DECODE_HEAD \ |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 81 | __be32 *p; \ |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 82 | __be32 status |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | #define DECODE_TAIL \ |
| 84 | status = 0; \ |
| 85 | out: \ |
| 86 | return status; \ |
| 87 | xdr_error: \ |
Chuck Lever | 817cb9d | 2007-09-11 18:01:20 -0400 | [diff] [blame] | 88 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
| 89 | __FILE__, __LINE__); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | status = nfserr_bad_xdr; \ |
| 91 | goto out |
| 92 | |
| 93 | #define READ32(x) (x) = ntohl(*p++) |
| 94 | #define READ64(x) do { \ |
| 95 | (x) = (u64)ntohl(*p++) << 32; \ |
| 96 | (x) |= ntohl(*p++); \ |
| 97 | } while (0) |
| 98 | #define READTIME(x) do { \ |
| 99 | p++; \ |
| 100 | (x) = ntohl(*p++); \ |
| 101 | p++; \ |
| 102 | } while (0) |
| 103 | #define READMEM(x,nbytes) do { \ |
| 104 | x = (char *)p; \ |
| 105 | p += XDR_QUADLEN(nbytes); \ |
| 106 | } while (0) |
| 107 | #define SAVEMEM(x,nbytes) do { \ |
| 108 | if (!(x = (p==argp->tmp || p == argp->tmpp) ? \ |
| 109 | savemem(argp, p, nbytes) : \ |
| 110 | (char *)p)) { \ |
Chuck Lever | 817cb9d | 2007-09-11 18:01:20 -0400 | [diff] [blame] | 111 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
| 112 | __FILE__, __LINE__); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | goto xdr_error; \ |
| 114 | } \ |
| 115 | p += XDR_QUADLEN(nbytes); \ |
| 116 | } while (0) |
| 117 | #define COPYMEM(x,nbytes) do { \ |
| 118 | memcpy((x), p, nbytes); \ |
| 119 | p += XDR_QUADLEN(nbytes); \ |
| 120 | } while (0) |
| 121 | |
| 122 | /* READ_BUF, read_buf(): nbytes must be <= PAGE_SIZE */ |
| 123 | #define READ_BUF(nbytes) do { \ |
| 124 | if (nbytes <= (u32)((char *)argp->end - (char *)argp->p)) { \ |
| 125 | p = argp->p; \ |
| 126 | argp->p += XDR_QUADLEN(nbytes); \ |
| 127 | } else if (!(p = read_buf(argp, nbytes))) { \ |
Chuck Lever | 817cb9d | 2007-09-11 18:01:20 -0400 | [diff] [blame] | 128 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
| 129 | __FILE__, __LINE__); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | goto xdr_error; \ |
| 131 | } \ |
| 132 | } while (0) |
| 133 | |
J. Bruce Fields | ca2a05a | 2007-11-11 15:43:12 -0500 | [diff] [blame] | 134 | static __be32 *read_buf(struct nfsd4_compoundargs *argp, u32 nbytes) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 135 | { |
| 136 | /* We want more bytes than seem to be available. |
| 137 | * Maybe we need a new page, maybe we have just run out |
| 138 | */ |
J. Bruce Fields | ca2a05a | 2007-11-11 15:43:12 -0500 | [diff] [blame] | 139 | unsigned int avail = (char *)argp->end - (char *)argp->p; |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 140 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | if (avail + argp->pagelen < nbytes) |
| 142 | return NULL; |
| 143 | if (avail + PAGE_SIZE < nbytes) /* need more than a page !! */ |
| 144 | return NULL; |
| 145 | /* ok, we can do it with the current plus the next page */ |
| 146 | if (nbytes <= sizeof(argp->tmp)) |
| 147 | p = argp->tmp; |
| 148 | else { |
Jesper Juhl | f99d49a | 2005-11-07 01:01:34 -0800 | [diff] [blame] | 149 | kfree(argp->tmpp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | p = argp->tmpp = kmalloc(nbytes, GFP_KERNEL); |
| 151 | if (!p) |
| 152 | return NULL; |
| 153 | |
| 154 | } |
J. Bruce Fields | ca2a05a | 2007-11-11 15:43:12 -0500 | [diff] [blame] | 155 | /* |
| 156 | * The following memcpy is safe because read_buf is always |
| 157 | * called with nbytes > avail, and the two cases above both |
| 158 | * guarantee p points to at least nbytes bytes. |
| 159 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | memcpy(p, argp->p, avail); |
| 161 | /* step to next page */ |
| 162 | argp->p = page_address(argp->pagelist[0]); |
| 163 | argp->pagelist++; |
| 164 | if (argp->pagelen < PAGE_SIZE) { |
Neil Brown | 2bc3c11 | 2010-04-20 12:16:52 +1000 | [diff] [blame] | 165 | argp->end = argp->p + (argp->pagelen>>2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 166 | argp->pagelen = 0; |
| 167 | } else { |
Neil Brown | 2bc3c11 | 2010-04-20 12:16:52 +1000 | [diff] [blame] | 168 | argp->end = argp->p + (PAGE_SIZE>>2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | argp->pagelen -= PAGE_SIZE; |
| 170 | } |
| 171 | memcpy(((char*)p)+avail, argp->p, (nbytes - avail)); |
| 172 | argp->p += XDR_QUADLEN(nbytes - avail); |
| 173 | return p; |
| 174 | } |
| 175 | |
Andy Adamson | 60adfc5 | 2009-04-03 08:28:50 +0300 | [diff] [blame] | 176 | static int zero_clientid(clientid_t *clid) |
| 177 | { |
| 178 | return (clid->cl_boot == 0) && (clid->cl_id == 0); |
| 179 | } |
| 180 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | static int |
| 182 | defer_free(struct nfsd4_compoundargs *argp, |
| 183 | void (*release)(const void *), void *p) |
| 184 | { |
| 185 | struct tmpbuf *tb; |
| 186 | |
| 187 | tb = kmalloc(sizeof(*tb), GFP_KERNEL); |
| 188 | if (!tb) |
| 189 | return -ENOMEM; |
| 190 | tb->buf = p; |
| 191 | tb->release = release; |
| 192 | tb->next = argp->to_free; |
| 193 | argp->to_free = tb; |
| 194 | return 0; |
| 195 | } |
| 196 | |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 197 | static char *savemem(struct nfsd4_compoundargs *argp, __be32 *p, int nbytes) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | if (p == argp->tmp) { |
J. Bruce Fields | a4db5fe | 2007-02-16 01:28:30 -0800 | [diff] [blame] | 200 | p = kmalloc(nbytes, GFP_KERNEL); |
| 201 | if (!p) |
| 202 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 203 | memcpy(p, argp->tmp, nbytes); |
| 204 | } else { |
Eric Sesterhenn | 73dff8b | 2006-10-03 23:37:14 +0200 | [diff] [blame] | 205 | BUG_ON(p != argp->tmpp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | argp->tmpp = NULL; |
| 207 | } |
| 208 | if (defer_free(argp, kfree, p)) { |
J. Bruce Fields | a4db5fe | 2007-02-16 01:28:30 -0800 | [diff] [blame] | 209 | kfree(p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | return NULL; |
| 211 | } else |
| 212 | return (char *)p; |
| 213 | } |
| 214 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 215 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | nfsd4_decode_bitmap(struct nfsd4_compoundargs *argp, u32 *bmval) |
| 217 | { |
| 218 | u32 bmlen; |
| 219 | DECODE_HEAD; |
| 220 | |
| 221 | bmval[0] = 0; |
| 222 | bmval[1] = 0; |
Andy Adamson | 7e70570 | 2009-04-03 08:29:11 +0300 | [diff] [blame] | 223 | bmval[2] = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 224 | |
| 225 | READ_BUF(4); |
| 226 | READ32(bmlen); |
| 227 | if (bmlen > 1000) |
| 228 | goto xdr_error; |
| 229 | |
| 230 | READ_BUF(bmlen << 2); |
| 231 | if (bmlen > 0) |
| 232 | READ32(bmval[0]); |
| 233 | if (bmlen > 1) |
| 234 | READ32(bmval[1]); |
Andy Adamson | 7e70570 | 2009-04-03 08:29:11 +0300 | [diff] [blame] | 235 | if (bmlen > 2) |
| 236 | READ32(bmval[2]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 237 | |
| 238 | DECODE_TAIL; |
| 239 | } |
| 240 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 241 | static __be32 |
Yu Zhiguo | 3c8e031 | 2009-05-16 16:22:31 +0800 | [diff] [blame] | 242 | nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, |
Benny Halevy | c0d6fc8 | 2009-04-03 08:29:05 +0300 | [diff] [blame] | 243 | struct iattr *iattr, struct nfs4_acl **acl) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | { |
| 245 | int expected_len, len = 0; |
| 246 | u32 dummy32; |
| 247 | char *buf; |
Al Viro | b8dd7b9 | 2006-10-19 23:29:01 -0700 | [diff] [blame] | 248 | int host_err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 249 | |
| 250 | DECODE_HEAD; |
| 251 | iattr->ia_valid = 0; |
| 252 | if ((status = nfsd4_decode_bitmap(argp, bmval))) |
| 253 | return status; |
| 254 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | READ_BUF(4); |
| 256 | READ32(expected_len); |
| 257 | |
| 258 | if (bmval[0] & FATTR4_WORD0_SIZE) { |
| 259 | READ_BUF(8); |
| 260 | len += 8; |
| 261 | READ64(iattr->ia_size); |
| 262 | iattr->ia_valid |= ATTR_SIZE; |
| 263 | } |
| 264 | if (bmval[0] & FATTR4_WORD0_ACL) { |
J. Bruce Fields | 28e05dd | 2007-02-16 01:28:30 -0800 | [diff] [blame] | 265 | int nace; |
| 266 | struct nfs4_ace *ace; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | |
| 268 | READ_BUF(4); len += 4; |
| 269 | READ32(nace); |
| 270 | |
J. Bruce Fields | 28e05dd | 2007-02-16 01:28:30 -0800 | [diff] [blame] | 271 | if (nace > NFS4_ACL_MAX) |
| 272 | return nfserr_resource; |
| 273 | |
| 274 | *acl = nfs4_acl_new(nace); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | if (*acl == NULL) { |
Al Viro | b8dd7b9 | 2006-10-19 23:29:01 -0700 | [diff] [blame] | 276 | host_err = -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 277 | goto out_nfserr; |
| 278 | } |
J. Bruce Fields | 28e05dd | 2007-02-16 01:28:30 -0800 | [diff] [blame] | 279 | defer_free(argp, kfree, *acl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | |
J. Bruce Fields | 28e05dd | 2007-02-16 01:28:30 -0800 | [diff] [blame] | 281 | (*acl)->naces = nace; |
| 282 | for (ace = (*acl)->aces; ace < (*acl)->aces + nace; ace++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 283 | READ_BUF(16); len += 16; |
J. Bruce Fields | 28e05dd | 2007-02-16 01:28:30 -0800 | [diff] [blame] | 284 | READ32(ace->type); |
| 285 | READ32(ace->flag); |
| 286 | READ32(ace->access_mask); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | READ32(dummy32); |
| 288 | READ_BUF(dummy32); |
| 289 | len += XDR_QUADLEN(dummy32) << 2; |
| 290 | READMEM(buf, dummy32); |
J. Bruce Fields | 28e05dd | 2007-02-16 01:28:30 -0800 | [diff] [blame] | 291 | ace->whotype = nfs4_acl_get_whotype(buf, dummy32); |
J. Bruce Fields | 3c72602 | 2011-01-04 17:53:52 -0500 | [diff] [blame] | 292 | status = nfs_ok; |
J. Bruce Fields | 28e05dd | 2007-02-16 01:28:30 -0800 | [diff] [blame] | 293 | if (ace->whotype != NFS4_ACL_WHO_NAMED) |
| 294 | ace->who = 0; |
| 295 | else if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP) |
J. Bruce Fields | 3c72602 | 2011-01-04 17:53:52 -0500 | [diff] [blame] | 296 | status = nfsd_map_name_to_gid(argp->rqstp, |
J. Bruce Fields | 28e05dd | 2007-02-16 01:28:30 -0800 | [diff] [blame] | 297 | buf, dummy32, &ace->who); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 298 | else |
J. Bruce Fields | 3c72602 | 2011-01-04 17:53:52 -0500 | [diff] [blame] | 299 | status = nfsd_map_name_to_uid(argp->rqstp, |
J. Bruce Fields | 28e05dd | 2007-02-16 01:28:30 -0800 | [diff] [blame] | 300 | buf, dummy32, &ace->who); |
J. Bruce Fields | 3c72602 | 2011-01-04 17:53:52 -0500 | [diff] [blame] | 301 | if (status) |
| 302 | return status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | } |
| 304 | } else |
| 305 | *acl = NULL; |
| 306 | if (bmval[1] & FATTR4_WORD1_MODE) { |
| 307 | READ_BUF(4); |
| 308 | len += 4; |
| 309 | READ32(iattr->ia_mode); |
| 310 | iattr->ia_mode &= (S_IFMT | S_IALLUGO); |
| 311 | iattr->ia_valid |= ATTR_MODE; |
| 312 | } |
| 313 | if (bmval[1] & FATTR4_WORD1_OWNER) { |
| 314 | READ_BUF(4); |
| 315 | len += 4; |
| 316 | READ32(dummy32); |
| 317 | READ_BUF(dummy32); |
| 318 | len += (XDR_QUADLEN(dummy32) << 2); |
| 319 | READMEM(buf, dummy32); |
NeilBrown | 47c8529 | 2011-02-16 13:08:35 +1100 | [diff] [blame] | 320 | if ((status = nfsd_map_name_to_uid(argp->rqstp, buf, dummy32, &iattr->ia_uid))) |
| 321 | return status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | iattr->ia_valid |= ATTR_UID; |
| 323 | } |
| 324 | if (bmval[1] & FATTR4_WORD1_OWNER_GROUP) { |
| 325 | READ_BUF(4); |
| 326 | len += 4; |
| 327 | READ32(dummy32); |
| 328 | READ_BUF(dummy32); |
| 329 | len += (XDR_QUADLEN(dummy32) << 2); |
| 330 | READMEM(buf, dummy32); |
NeilBrown | 47c8529 | 2011-02-16 13:08:35 +1100 | [diff] [blame] | 331 | if ((status = nfsd_map_name_to_gid(argp->rqstp, buf, dummy32, &iattr->ia_gid))) |
| 332 | return status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 333 | iattr->ia_valid |= ATTR_GID; |
| 334 | } |
| 335 | if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) { |
| 336 | READ_BUF(4); |
| 337 | len += 4; |
| 338 | READ32(dummy32); |
| 339 | switch (dummy32) { |
| 340 | case NFS4_SET_TO_CLIENT_TIME: |
| 341 | /* We require the high 32 bits of 'seconds' to be 0, and we ignore |
| 342 | all 32 bits of 'nseconds'. */ |
| 343 | READ_BUF(12); |
| 344 | len += 12; |
| 345 | READ32(dummy32); |
| 346 | if (dummy32) |
| 347 | return nfserr_inval; |
| 348 | READ32(iattr->ia_atime.tv_sec); |
| 349 | READ32(iattr->ia_atime.tv_nsec); |
| 350 | if (iattr->ia_atime.tv_nsec >= (u32)1000000000) |
| 351 | return nfserr_inval; |
| 352 | iattr->ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET); |
| 353 | break; |
| 354 | case NFS4_SET_TO_SERVER_TIME: |
| 355 | iattr->ia_valid |= ATTR_ATIME; |
| 356 | break; |
| 357 | default: |
| 358 | goto xdr_error; |
| 359 | } |
| 360 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) { |
| 362 | READ_BUF(4); |
| 363 | len += 4; |
| 364 | READ32(dummy32); |
| 365 | switch (dummy32) { |
| 366 | case NFS4_SET_TO_CLIENT_TIME: |
| 367 | /* We require the high 32 bits of 'seconds' to be 0, and we ignore |
| 368 | all 32 bits of 'nseconds'. */ |
| 369 | READ_BUF(12); |
| 370 | len += 12; |
| 371 | READ32(dummy32); |
| 372 | if (dummy32) |
| 373 | return nfserr_inval; |
| 374 | READ32(iattr->ia_mtime.tv_sec); |
| 375 | READ32(iattr->ia_mtime.tv_nsec); |
| 376 | if (iattr->ia_mtime.tv_nsec >= (u32)1000000000) |
| 377 | return nfserr_inval; |
| 378 | iattr->ia_valid |= (ATTR_MTIME | ATTR_MTIME_SET); |
| 379 | break; |
| 380 | case NFS4_SET_TO_SERVER_TIME: |
| 381 | iattr->ia_valid |= ATTR_MTIME; |
| 382 | break; |
| 383 | default: |
| 384 | goto xdr_error; |
| 385 | } |
| 386 | } |
Yu Zhiguo | 3c8e031 | 2009-05-16 16:22:31 +0800 | [diff] [blame] | 387 | if (bmval[0] & ~NFSD_WRITEABLE_ATTRS_WORD0 |
| 388 | || bmval[1] & ~NFSD_WRITEABLE_ATTRS_WORD1 |
| 389 | || bmval[2] & ~NFSD_WRITEABLE_ATTRS_WORD2) |
| 390 | READ_BUF(expected_len - len); |
| 391 | else if (len != expected_len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | goto xdr_error; |
| 393 | |
| 394 | DECODE_TAIL; |
| 395 | |
| 396 | out_nfserr: |
Al Viro | b8dd7b9 | 2006-10-19 23:29:01 -0700 | [diff] [blame] | 397 | status = nfserrno(host_err); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | goto out; |
| 399 | } |
| 400 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 401 | static __be32 |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 402 | nfsd4_decode_stateid(struct nfsd4_compoundargs *argp, stateid_t *sid) |
| 403 | { |
| 404 | DECODE_HEAD; |
| 405 | |
| 406 | READ_BUF(sizeof(stateid_t)); |
| 407 | READ32(sid->si_generation); |
| 408 | COPYMEM(&sid->si_opaque, sizeof(stateid_opaque_t)); |
| 409 | |
| 410 | DECODE_TAIL; |
| 411 | } |
| 412 | |
| 413 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 414 | nfsd4_decode_access(struct nfsd4_compoundargs *argp, struct nfsd4_access *access) |
| 415 | { |
| 416 | DECODE_HEAD; |
| 417 | |
| 418 | READ_BUF(4); |
| 419 | READ32(access->ac_req_access); |
| 420 | |
| 421 | DECODE_TAIL; |
| 422 | } |
| 423 | |
J. Bruce Fields | 1d1bc8f | 2010-10-04 23:12:59 -0400 | [diff] [blame] | 424 | static __be32 nfsd4_decode_bind_conn_to_session(struct nfsd4_compoundargs *argp, struct nfsd4_bind_conn_to_session *bcts) |
| 425 | { |
| 426 | DECODE_HEAD; |
| 427 | u32 dummy; |
| 428 | |
| 429 | READ_BUF(NFS4_MAX_SESSIONID_LEN + 8); |
| 430 | COPYMEM(bcts->sessionid.data, NFS4_MAX_SESSIONID_LEN); |
| 431 | READ32(bcts->dir); |
| 432 | /* XXX: Perhaps Tom Tucker could help us figure out how we |
| 433 | * should be using ctsa_use_conn_in_rdma_mode: */ |
| 434 | READ32(dummy); |
| 435 | |
| 436 | DECODE_TAIL; |
| 437 | } |
| 438 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 439 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 440 | nfsd4_decode_close(struct nfsd4_compoundargs *argp, struct nfsd4_close *close) |
| 441 | { |
| 442 | DECODE_HEAD; |
| 443 | |
| 444 | close->cl_stateowner = NULL; |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 445 | READ_BUF(4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 446 | READ32(close->cl_seqid); |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 447 | return nfsd4_decode_stateid(argp, &close->cl_stateid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 448 | |
| 449 | DECODE_TAIL; |
| 450 | } |
| 451 | |
| 452 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 453 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | nfsd4_decode_commit(struct nfsd4_compoundargs *argp, struct nfsd4_commit *commit) |
| 455 | { |
| 456 | DECODE_HEAD; |
| 457 | |
| 458 | READ_BUF(12); |
| 459 | READ64(commit->co_offset); |
| 460 | READ32(commit->co_count); |
| 461 | |
| 462 | DECODE_TAIL; |
| 463 | } |
| 464 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 465 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 466 | nfsd4_decode_create(struct nfsd4_compoundargs *argp, struct nfsd4_create *create) |
| 467 | { |
| 468 | DECODE_HEAD; |
| 469 | |
| 470 | READ_BUF(4); |
| 471 | READ32(create->cr_type); |
| 472 | switch (create->cr_type) { |
| 473 | case NF4LNK: |
| 474 | READ_BUF(4); |
| 475 | READ32(create->cr_linklen); |
| 476 | READ_BUF(create->cr_linklen); |
| 477 | SAVEMEM(create->cr_linkname, create->cr_linklen); |
| 478 | break; |
| 479 | case NF4BLK: |
| 480 | case NF4CHR: |
| 481 | READ_BUF(8); |
| 482 | READ32(create->cr_specdata1); |
| 483 | READ32(create->cr_specdata2); |
| 484 | break; |
| 485 | case NF4SOCK: |
| 486 | case NF4FIFO: |
| 487 | case NF4DIR: |
| 488 | default: |
| 489 | break; |
| 490 | } |
| 491 | |
| 492 | READ_BUF(4); |
| 493 | READ32(create->cr_namelen); |
| 494 | READ_BUF(create->cr_namelen); |
| 495 | SAVEMEM(create->cr_name, create->cr_namelen); |
| 496 | if ((status = check_filename(create->cr_name, create->cr_namelen, nfserr_inval))) |
| 497 | return status; |
| 498 | |
Yu Zhiguo | 3c8e031 | 2009-05-16 16:22:31 +0800 | [diff] [blame] | 499 | status = nfsd4_decode_fattr(argp, create->cr_bmval, &create->cr_iattr, |
| 500 | &create->cr_acl); |
Benny Halevy | c0d6fc8 | 2009-04-03 08:29:05 +0300 | [diff] [blame] | 501 | if (status) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 502 | goto out; |
| 503 | |
| 504 | DECODE_TAIL; |
| 505 | } |
| 506 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 507 | static inline __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 508 | nfsd4_decode_delegreturn(struct nfsd4_compoundargs *argp, struct nfsd4_delegreturn *dr) |
| 509 | { |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 510 | return nfsd4_decode_stateid(argp, &dr->dr_stateid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 511 | } |
| 512 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 513 | static inline __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 514 | nfsd4_decode_getattr(struct nfsd4_compoundargs *argp, struct nfsd4_getattr *getattr) |
| 515 | { |
| 516 | return nfsd4_decode_bitmap(argp, getattr->ga_bmval); |
| 517 | } |
| 518 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 519 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 520 | nfsd4_decode_link(struct nfsd4_compoundargs *argp, struct nfsd4_link *link) |
| 521 | { |
| 522 | DECODE_HEAD; |
| 523 | |
| 524 | READ_BUF(4); |
| 525 | READ32(link->li_namelen); |
| 526 | READ_BUF(link->li_namelen); |
| 527 | SAVEMEM(link->li_name, link->li_namelen); |
| 528 | if ((status = check_filename(link->li_name, link->li_namelen, nfserr_inval))) |
| 529 | return status; |
| 530 | |
| 531 | DECODE_TAIL; |
| 532 | } |
| 533 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 534 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | nfsd4_decode_lock(struct nfsd4_compoundargs *argp, struct nfsd4_lock *lock) |
| 536 | { |
| 537 | DECODE_HEAD; |
| 538 | |
J. Bruce Fields | 3a65588 | 2006-01-18 17:43:19 -0800 | [diff] [blame] | 539 | lock->lk_replay_owner = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 540 | /* |
| 541 | * type, reclaim(boolean), offset, length, new_lock_owner(boolean) |
| 542 | */ |
| 543 | READ_BUF(28); |
| 544 | READ32(lock->lk_type); |
| 545 | if ((lock->lk_type < NFS4_READ_LT) || (lock->lk_type > NFS4_WRITEW_LT)) |
| 546 | goto xdr_error; |
| 547 | READ32(lock->lk_reclaim); |
| 548 | READ64(lock->lk_offset); |
| 549 | READ64(lock->lk_length); |
| 550 | READ32(lock->lk_is_new); |
| 551 | |
| 552 | if (lock->lk_is_new) { |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 553 | READ_BUF(4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 554 | READ32(lock->lk_new_open_seqid); |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 555 | status = nfsd4_decode_stateid(argp, &lock->lk_new_open_stateid); |
| 556 | if (status) |
| 557 | return status; |
| 558 | READ_BUF(8 + sizeof(clientid_t)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 559 | READ32(lock->lk_new_lock_seqid); |
| 560 | COPYMEM(&lock->lk_new_clientid, sizeof(clientid_t)); |
| 561 | READ32(lock->lk_new_owner.len); |
| 562 | READ_BUF(lock->lk_new_owner.len); |
| 563 | READMEM(lock->lk_new_owner.data, lock->lk_new_owner.len); |
| 564 | } else { |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 565 | status = nfsd4_decode_stateid(argp, &lock->lk_old_lock_stateid); |
| 566 | if (status) |
| 567 | return status; |
| 568 | READ_BUF(4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 569 | READ32(lock->lk_old_lock_seqid); |
| 570 | } |
| 571 | |
| 572 | DECODE_TAIL; |
| 573 | } |
| 574 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 575 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 576 | nfsd4_decode_lockt(struct nfsd4_compoundargs *argp, struct nfsd4_lockt *lockt) |
| 577 | { |
| 578 | DECODE_HEAD; |
| 579 | |
| 580 | READ_BUF(32); |
| 581 | READ32(lockt->lt_type); |
| 582 | if((lockt->lt_type < NFS4_READ_LT) || (lockt->lt_type > NFS4_WRITEW_LT)) |
| 583 | goto xdr_error; |
| 584 | READ64(lockt->lt_offset); |
| 585 | READ64(lockt->lt_length); |
| 586 | COPYMEM(&lockt->lt_clientid, 8); |
| 587 | READ32(lockt->lt_owner.len); |
| 588 | READ_BUF(lockt->lt_owner.len); |
| 589 | READMEM(lockt->lt_owner.data, lockt->lt_owner.len); |
| 590 | |
Andy Adamson | 60adfc5 | 2009-04-03 08:28:50 +0300 | [diff] [blame] | 591 | if (argp->minorversion && !zero_clientid(&lockt->lt_clientid)) |
| 592 | return nfserr_inval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 593 | DECODE_TAIL; |
| 594 | } |
| 595 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 596 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 597 | nfsd4_decode_locku(struct nfsd4_compoundargs *argp, struct nfsd4_locku *locku) |
| 598 | { |
| 599 | DECODE_HEAD; |
| 600 | |
| 601 | locku->lu_stateowner = NULL; |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 602 | READ_BUF(8); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 603 | READ32(locku->lu_type); |
| 604 | if ((locku->lu_type < NFS4_READ_LT) || (locku->lu_type > NFS4_WRITEW_LT)) |
| 605 | goto xdr_error; |
| 606 | READ32(locku->lu_seqid); |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 607 | status = nfsd4_decode_stateid(argp, &locku->lu_stateid); |
| 608 | if (status) |
| 609 | return status; |
| 610 | READ_BUF(16); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 611 | READ64(locku->lu_offset); |
| 612 | READ64(locku->lu_length); |
| 613 | |
| 614 | DECODE_TAIL; |
| 615 | } |
| 616 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 617 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 618 | nfsd4_decode_lookup(struct nfsd4_compoundargs *argp, struct nfsd4_lookup *lookup) |
| 619 | { |
| 620 | DECODE_HEAD; |
| 621 | |
| 622 | READ_BUF(4); |
| 623 | READ32(lookup->lo_len); |
| 624 | READ_BUF(lookup->lo_len); |
| 625 | SAVEMEM(lookup->lo_name, lookup->lo_len); |
| 626 | if ((status = check_filename(lookup->lo_name, lookup->lo_len, nfserr_noent))) |
| 627 | return status; |
| 628 | |
| 629 | DECODE_TAIL; |
| 630 | } |
| 631 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 632 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 633 | nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open) |
| 634 | { |
| 635 | DECODE_HEAD; |
| 636 | |
| 637 | memset(open->op_bmval, 0, sizeof(open->op_bmval)); |
| 638 | open->op_iattr.ia_valid = 0; |
| 639 | open->op_stateowner = NULL; |
| 640 | |
| 641 | /* seqid, share_access, share_deny, clientid, ownerlen */ |
| 642 | READ_BUF(16 + sizeof(clientid_t)); |
| 643 | READ32(open->op_seqid); |
| 644 | READ32(open->op_share_access); |
| 645 | READ32(open->op_share_deny); |
| 646 | COPYMEM(&open->op_clientid, sizeof(clientid_t)); |
| 647 | READ32(open->op_owner.len); |
| 648 | |
| 649 | /* owner, open_flag */ |
| 650 | READ_BUF(open->op_owner.len + 4); |
| 651 | SAVEMEM(open->op_owner.data, open->op_owner.len); |
| 652 | READ32(open->op_create); |
| 653 | switch (open->op_create) { |
| 654 | case NFS4_OPEN_NOCREATE: |
| 655 | break; |
| 656 | case NFS4_OPEN_CREATE: |
| 657 | READ_BUF(4); |
| 658 | READ32(open->op_createmode); |
| 659 | switch (open->op_createmode) { |
| 660 | case NFS4_CREATE_UNCHECKED: |
| 661 | case NFS4_CREATE_GUARDED: |
Benny Halevy | c0d6fc8 | 2009-04-03 08:29:05 +0300 | [diff] [blame] | 662 | status = nfsd4_decode_fattr(argp, open->op_bmval, |
Yu Zhiguo | 3c8e031 | 2009-05-16 16:22:31 +0800 | [diff] [blame] | 663 | &open->op_iattr, &open->op_acl); |
Benny Halevy | c0d6fc8 | 2009-04-03 08:29:05 +0300 | [diff] [blame] | 664 | if (status) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 665 | goto out; |
| 666 | break; |
| 667 | case NFS4_CREATE_EXCLUSIVE: |
| 668 | READ_BUF(8); |
| 669 | COPYMEM(open->op_verf.data, 8); |
| 670 | break; |
Benny Halevy | 79fb54a | 2009-04-03 08:29:17 +0300 | [diff] [blame] | 671 | case NFS4_CREATE_EXCLUSIVE4_1: |
| 672 | if (argp->minorversion < 1) |
| 673 | goto xdr_error; |
| 674 | READ_BUF(8); |
| 675 | COPYMEM(open->op_verf.data, 8); |
| 676 | status = nfsd4_decode_fattr(argp, open->op_bmval, |
Yu Zhiguo | 3c8e031 | 2009-05-16 16:22:31 +0800 | [diff] [blame] | 677 | &open->op_iattr, &open->op_acl); |
Benny Halevy | 79fb54a | 2009-04-03 08:29:17 +0300 | [diff] [blame] | 678 | if (status) |
| 679 | goto out; |
| 680 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 681 | default: |
| 682 | goto xdr_error; |
| 683 | } |
| 684 | break; |
| 685 | default: |
| 686 | goto xdr_error; |
| 687 | } |
| 688 | |
| 689 | /* open_claim */ |
| 690 | READ_BUF(4); |
| 691 | READ32(open->op_claim_type); |
| 692 | switch (open->op_claim_type) { |
| 693 | case NFS4_OPEN_CLAIM_NULL: |
| 694 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: |
| 695 | READ_BUF(4); |
| 696 | READ32(open->op_fname.len); |
| 697 | READ_BUF(open->op_fname.len); |
| 698 | SAVEMEM(open->op_fname.data, open->op_fname.len); |
| 699 | if ((status = check_filename(open->op_fname.data, open->op_fname.len, nfserr_inval))) |
| 700 | return status; |
| 701 | break; |
| 702 | case NFS4_OPEN_CLAIM_PREVIOUS: |
| 703 | READ_BUF(4); |
| 704 | READ32(open->op_delegate_type); |
| 705 | break; |
| 706 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 707 | status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid); |
| 708 | if (status) |
| 709 | return status; |
| 710 | READ_BUF(4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 711 | READ32(open->op_fname.len); |
| 712 | READ_BUF(open->op_fname.len); |
| 713 | SAVEMEM(open->op_fname.data, open->op_fname.len); |
| 714 | if ((status = check_filename(open->op_fname.data, open->op_fname.len, nfserr_inval))) |
| 715 | return status; |
| 716 | break; |
| 717 | default: |
| 718 | goto xdr_error; |
| 719 | } |
| 720 | |
| 721 | DECODE_TAIL; |
| 722 | } |
| 723 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 724 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 725 | nfsd4_decode_open_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_open_confirm *open_conf) |
| 726 | { |
| 727 | DECODE_HEAD; |
| 728 | |
| 729 | open_conf->oc_stateowner = NULL; |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 730 | status = nfsd4_decode_stateid(argp, &open_conf->oc_req_stateid); |
| 731 | if (status) |
| 732 | return status; |
| 733 | READ_BUF(4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 734 | READ32(open_conf->oc_seqid); |
| 735 | |
| 736 | DECODE_TAIL; |
| 737 | } |
| 738 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 739 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 740 | nfsd4_decode_open_downgrade(struct nfsd4_compoundargs *argp, struct nfsd4_open_downgrade *open_down) |
| 741 | { |
| 742 | DECODE_HEAD; |
| 743 | |
| 744 | open_down->od_stateowner = NULL; |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 745 | status = nfsd4_decode_stateid(argp, &open_down->od_stateid); |
| 746 | if (status) |
| 747 | return status; |
| 748 | READ_BUF(12); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 749 | READ32(open_down->od_seqid); |
| 750 | READ32(open_down->od_share_access); |
| 751 | READ32(open_down->od_share_deny); |
| 752 | |
| 753 | DECODE_TAIL; |
| 754 | } |
| 755 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 756 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 757 | nfsd4_decode_putfh(struct nfsd4_compoundargs *argp, struct nfsd4_putfh *putfh) |
| 758 | { |
| 759 | DECODE_HEAD; |
| 760 | |
| 761 | READ_BUF(4); |
| 762 | READ32(putfh->pf_fhlen); |
| 763 | if (putfh->pf_fhlen > NFS4_FHSIZE) |
| 764 | goto xdr_error; |
| 765 | READ_BUF(putfh->pf_fhlen); |
| 766 | SAVEMEM(putfh->pf_fhval, putfh->pf_fhlen); |
| 767 | |
| 768 | DECODE_TAIL; |
| 769 | } |
| 770 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 771 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 772 | nfsd4_decode_read(struct nfsd4_compoundargs *argp, struct nfsd4_read *read) |
| 773 | { |
| 774 | DECODE_HEAD; |
| 775 | |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 776 | status = nfsd4_decode_stateid(argp, &read->rd_stateid); |
| 777 | if (status) |
| 778 | return status; |
| 779 | READ_BUF(12); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 780 | READ64(read->rd_offset); |
| 781 | READ32(read->rd_length); |
| 782 | |
| 783 | DECODE_TAIL; |
| 784 | } |
| 785 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 786 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 787 | nfsd4_decode_readdir(struct nfsd4_compoundargs *argp, struct nfsd4_readdir *readdir) |
| 788 | { |
| 789 | DECODE_HEAD; |
| 790 | |
| 791 | READ_BUF(24); |
| 792 | READ64(readdir->rd_cookie); |
| 793 | COPYMEM(readdir->rd_verf.data, sizeof(readdir->rd_verf.data)); |
| 794 | READ32(readdir->rd_dircount); /* just in case you needed a useless field... */ |
| 795 | READ32(readdir->rd_maxcount); |
| 796 | if ((status = nfsd4_decode_bitmap(argp, readdir->rd_bmval))) |
| 797 | goto out; |
| 798 | |
| 799 | DECODE_TAIL; |
| 800 | } |
| 801 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 802 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 803 | nfsd4_decode_remove(struct nfsd4_compoundargs *argp, struct nfsd4_remove *remove) |
| 804 | { |
| 805 | DECODE_HEAD; |
| 806 | |
| 807 | READ_BUF(4); |
| 808 | READ32(remove->rm_namelen); |
| 809 | READ_BUF(remove->rm_namelen); |
| 810 | SAVEMEM(remove->rm_name, remove->rm_namelen); |
| 811 | if ((status = check_filename(remove->rm_name, remove->rm_namelen, nfserr_noent))) |
| 812 | return status; |
| 813 | |
| 814 | DECODE_TAIL; |
| 815 | } |
| 816 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 817 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 818 | nfsd4_decode_rename(struct nfsd4_compoundargs *argp, struct nfsd4_rename *rename) |
| 819 | { |
| 820 | DECODE_HEAD; |
| 821 | |
| 822 | READ_BUF(4); |
| 823 | READ32(rename->rn_snamelen); |
| 824 | READ_BUF(rename->rn_snamelen + 4); |
| 825 | SAVEMEM(rename->rn_sname, rename->rn_snamelen); |
| 826 | READ32(rename->rn_tnamelen); |
| 827 | READ_BUF(rename->rn_tnamelen); |
| 828 | SAVEMEM(rename->rn_tname, rename->rn_tnamelen); |
| 829 | if ((status = check_filename(rename->rn_sname, rename->rn_snamelen, nfserr_noent))) |
| 830 | return status; |
| 831 | if ((status = check_filename(rename->rn_tname, rename->rn_tnamelen, nfserr_inval))) |
| 832 | return status; |
| 833 | |
| 834 | DECODE_TAIL; |
| 835 | } |
| 836 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 837 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 838 | nfsd4_decode_renew(struct nfsd4_compoundargs *argp, clientid_t *clientid) |
| 839 | { |
| 840 | DECODE_HEAD; |
| 841 | |
| 842 | READ_BUF(sizeof(clientid_t)); |
| 843 | COPYMEM(clientid, sizeof(clientid_t)); |
| 844 | |
| 845 | DECODE_TAIL; |
| 846 | } |
| 847 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 848 | static __be32 |
Andy Adamson | dcb488a3 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 849 | nfsd4_decode_secinfo(struct nfsd4_compoundargs *argp, |
| 850 | struct nfsd4_secinfo *secinfo) |
| 851 | { |
| 852 | DECODE_HEAD; |
| 853 | |
| 854 | READ_BUF(4); |
| 855 | READ32(secinfo->si_namelen); |
| 856 | READ_BUF(secinfo->si_namelen); |
| 857 | SAVEMEM(secinfo->si_name, secinfo->si_namelen); |
| 858 | status = check_filename(secinfo->si_name, secinfo->si_namelen, |
| 859 | nfserr_noent); |
| 860 | if (status) |
| 861 | return status; |
| 862 | DECODE_TAIL; |
| 863 | } |
| 864 | |
| 865 | static __be32 |
J. Bruce Fields | 04f4ad1 | 2010-12-16 09:51:13 -0500 | [diff] [blame] | 866 | nfsd4_decode_secinfo_no_name(struct nfsd4_compoundargs *argp, |
| 867 | struct nfsd4_secinfo_no_name *sin) |
| 868 | { |
| 869 | DECODE_HEAD; |
| 870 | |
| 871 | READ_BUF(4); |
| 872 | READ32(sin->sin_style); |
| 873 | DECODE_TAIL; |
| 874 | } |
| 875 | |
| 876 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 877 | nfsd4_decode_setattr(struct nfsd4_compoundargs *argp, struct nfsd4_setattr *setattr) |
| 878 | { |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 879 | __be32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 880 | |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 881 | status = nfsd4_decode_stateid(argp, &setattr->sa_stateid); |
| 882 | if (status) |
| 883 | return status; |
Yu Zhiguo | 3c8e031 | 2009-05-16 16:22:31 +0800 | [diff] [blame] | 884 | return nfsd4_decode_fattr(argp, setattr->sa_bmval, &setattr->sa_iattr, |
| 885 | &setattr->sa_acl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 886 | } |
| 887 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 888 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 889 | nfsd4_decode_setclientid(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid *setclientid) |
| 890 | { |
| 891 | DECODE_HEAD; |
| 892 | |
| 893 | READ_BUF(12); |
| 894 | COPYMEM(setclientid->se_verf.data, 8); |
| 895 | READ32(setclientid->se_namelen); |
| 896 | |
| 897 | READ_BUF(setclientid->se_namelen + 8); |
| 898 | SAVEMEM(setclientid->se_name, setclientid->se_namelen); |
| 899 | READ32(setclientid->se_callback_prog); |
| 900 | READ32(setclientid->se_callback_netid_len); |
| 901 | |
| 902 | READ_BUF(setclientid->se_callback_netid_len + 4); |
| 903 | SAVEMEM(setclientid->se_callback_netid_val, setclientid->se_callback_netid_len); |
| 904 | READ32(setclientid->se_callback_addr_len); |
| 905 | |
| 906 | READ_BUF(setclientid->se_callback_addr_len + 4); |
| 907 | SAVEMEM(setclientid->se_callback_addr_val, setclientid->se_callback_addr_len); |
| 908 | READ32(setclientid->se_callback_ident); |
| 909 | |
| 910 | DECODE_TAIL; |
| 911 | } |
| 912 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 913 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 914 | nfsd4_decode_setclientid_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid_confirm *scd_c) |
| 915 | { |
| 916 | DECODE_HEAD; |
| 917 | |
| 918 | READ_BUF(8 + sizeof(nfs4_verifier)); |
| 919 | COPYMEM(&scd_c->sc_clientid, 8); |
| 920 | COPYMEM(&scd_c->sc_confirm, sizeof(nfs4_verifier)); |
| 921 | |
| 922 | DECODE_TAIL; |
| 923 | } |
| 924 | |
| 925 | /* Also used for NVERIFY */ |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 926 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 927 | nfsd4_decode_verify(struct nfsd4_compoundargs *argp, struct nfsd4_verify *verify) |
| 928 | { |
| 929 | #if 0 |
| 930 | struct nfsd4_compoundargs save = { |
| 931 | .p = argp->p, |
| 932 | .end = argp->end, |
| 933 | .rqstp = argp->rqstp, |
| 934 | }; |
| 935 | u32 ve_bmval[2]; |
| 936 | struct iattr ve_iattr; /* request */ |
| 937 | struct nfs4_acl *ve_acl; /* request */ |
| 938 | #endif |
| 939 | DECODE_HEAD; |
| 940 | |
| 941 | if ((status = nfsd4_decode_bitmap(argp, verify->ve_bmval))) |
| 942 | goto out; |
| 943 | |
| 944 | /* For convenience's sake, we compare raw xdr'd attributes in |
| 945 | * nfsd4_proc_verify; however we still decode here just to return |
| 946 | * correct error in case of bad xdr. */ |
| 947 | #if 0 |
| 948 | status = nfsd4_decode_fattr(ve_bmval, &ve_iattr, &ve_acl); |
| 949 | if (status == nfserr_inval) { |
| 950 | status = nfserrno(status); |
| 951 | goto out; |
| 952 | } |
| 953 | #endif |
| 954 | READ_BUF(4); |
| 955 | READ32(verify->ve_attrlen); |
| 956 | READ_BUF(verify->ve_attrlen); |
| 957 | SAVEMEM(verify->ve_attrval, verify->ve_attrlen); |
| 958 | |
| 959 | DECODE_TAIL; |
| 960 | } |
| 961 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 962 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 963 | nfsd4_decode_write(struct nfsd4_compoundargs *argp, struct nfsd4_write *write) |
| 964 | { |
| 965 | int avail; |
| 966 | int v; |
| 967 | int len; |
| 968 | DECODE_HEAD; |
| 969 | |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 970 | status = nfsd4_decode_stateid(argp, &write->wr_stateid); |
| 971 | if (status) |
| 972 | return status; |
| 973 | READ_BUF(16); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 974 | READ64(write->wr_offset); |
| 975 | READ32(write->wr_stable_how); |
| 976 | if (write->wr_stable_how > 2) |
| 977 | goto xdr_error; |
| 978 | READ32(write->wr_buflen); |
| 979 | |
| 980 | /* Sorry .. no magic macros for this.. * |
| 981 | * READ_BUF(write->wr_buflen); |
| 982 | * SAVEMEM(write->wr_buf, write->wr_buflen); |
| 983 | */ |
| 984 | avail = (char*)argp->end - (char*)argp->p; |
| 985 | if (avail + argp->pagelen < write->wr_buflen) { |
Chuck Lever | 817cb9d | 2007-09-11 18:01:20 -0400 | [diff] [blame] | 986 | dprintk("NFSD: xdr error (%s:%d)\n", |
| 987 | __FILE__, __LINE__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 988 | goto xdr_error; |
| 989 | } |
NeilBrown | 3cc03b1 | 2006-10-04 02:15:47 -0700 | [diff] [blame] | 990 | argp->rqstp->rq_vec[0].iov_base = p; |
| 991 | argp->rqstp->rq_vec[0].iov_len = avail; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 992 | v = 0; |
| 993 | len = write->wr_buflen; |
NeilBrown | 3cc03b1 | 2006-10-04 02:15:47 -0700 | [diff] [blame] | 994 | while (len > argp->rqstp->rq_vec[v].iov_len) { |
| 995 | len -= argp->rqstp->rq_vec[v].iov_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 996 | v++; |
NeilBrown | 3cc03b1 | 2006-10-04 02:15:47 -0700 | [diff] [blame] | 997 | argp->rqstp->rq_vec[v].iov_base = page_address(argp->pagelist[0]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 998 | argp->pagelist++; |
| 999 | if (argp->pagelen >= PAGE_SIZE) { |
NeilBrown | 3cc03b1 | 2006-10-04 02:15:47 -0700 | [diff] [blame] | 1000 | argp->rqstp->rq_vec[v].iov_len = PAGE_SIZE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1001 | argp->pagelen -= PAGE_SIZE; |
| 1002 | } else { |
NeilBrown | 3cc03b1 | 2006-10-04 02:15:47 -0700 | [diff] [blame] | 1003 | argp->rqstp->rq_vec[v].iov_len = argp->pagelen; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1004 | argp->pagelen -= len; |
| 1005 | } |
| 1006 | } |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 1007 | argp->end = (__be32*) (argp->rqstp->rq_vec[v].iov_base + argp->rqstp->rq_vec[v].iov_len); |
| 1008 | argp->p = (__be32*) (argp->rqstp->rq_vec[v].iov_base + (XDR_QUADLEN(len) << 2)); |
NeilBrown | 3cc03b1 | 2006-10-04 02:15:47 -0700 | [diff] [blame] | 1009 | argp->rqstp->rq_vec[v].iov_len = len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1010 | write->wr_vlen = v+1; |
| 1011 | |
| 1012 | DECODE_TAIL; |
| 1013 | } |
| 1014 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1015 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1016 | nfsd4_decode_release_lockowner(struct nfsd4_compoundargs *argp, struct nfsd4_release_lockowner *rlockowner) |
| 1017 | { |
| 1018 | DECODE_HEAD; |
| 1019 | |
| 1020 | READ_BUF(12); |
| 1021 | COPYMEM(&rlockowner->rl_clientid, sizeof(clientid_t)); |
| 1022 | READ32(rlockowner->rl_owner.len); |
| 1023 | READ_BUF(rlockowner->rl_owner.len); |
| 1024 | READMEM(rlockowner->rl_owner.data, rlockowner->rl_owner.len); |
| 1025 | |
Andy Adamson | 60adfc5 | 2009-04-03 08:28:50 +0300 | [diff] [blame] | 1026 | if (argp->minorversion && !zero_clientid(&rlockowner->rl_clientid)) |
| 1027 | return nfserr_inval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1028 | DECODE_TAIL; |
| 1029 | } |
| 1030 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1031 | static __be32 |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 1032 | nfsd4_decode_exchange_id(struct nfsd4_compoundargs *argp, |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 1033 | struct nfsd4_exchange_id *exid) |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 1034 | { |
Mi Jinlong | 5afa040 | 2010-11-09 09:39:23 +0800 | [diff] [blame] | 1035 | int dummy, tmp; |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 1036 | DECODE_HEAD; |
| 1037 | |
| 1038 | READ_BUF(NFS4_VERIFIER_SIZE); |
| 1039 | COPYMEM(exid->verifier.data, NFS4_VERIFIER_SIZE); |
| 1040 | |
| 1041 | READ_BUF(4); |
| 1042 | READ32(exid->clname.len); |
| 1043 | |
| 1044 | READ_BUF(exid->clname.len); |
| 1045 | SAVEMEM(exid->clname.data, exid->clname.len); |
| 1046 | |
| 1047 | READ_BUF(4); |
| 1048 | READ32(exid->flags); |
| 1049 | |
| 1050 | /* Ignore state_protect4_a */ |
| 1051 | READ_BUF(4); |
| 1052 | READ32(exid->spa_how); |
| 1053 | switch (exid->spa_how) { |
| 1054 | case SP4_NONE: |
| 1055 | break; |
| 1056 | case SP4_MACH_CRED: |
| 1057 | /* spo_must_enforce */ |
| 1058 | READ_BUF(4); |
| 1059 | READ32(dummy); |
| 1060 | READ_BUF(dummy * 4); |
| 1061 | p += dummy; |
| 1062 | |
| 1063 | /* spo_must_allow */ |
| 1064 | READ_BUF(4); |
| 1065 | READ32(dummy); |
| 1066 | READ_BUF(dummy * 4); |
| 1067 | p += dummy; |
| 1068 | break; |
| 1069 | case SP4_SSV: |
| 1070 | /* ssp_ops */ |
| 1071 | READ_BUF(4); |
| 1072 | READ32(dummy); |
| 1073 | READ_BUF(dummy * 4); |
| 1074 | p += dummy; |
| 1075 | |
| 1076 | READ_BUF(4); |
| 1077 | READ32(dummy); |
| 1078 | READ_BUF(dummy * 4); |
| 1079 | p += dummy; |
| 1080 | |
| 1081 | /* ssp_hash_algs<> */ |
| 1082 | READ_BUF(4); |
Mi Jinlong | 5afa040 | 2010-11-09 09:39:23 +0800 | [diff] [blame] | 1083 | READ32(tmp); |
| 1084 | while (tmp--) { |
| 1085 | READ_BUF(4); |
| 1086 | READ32(dummy); |
| 1087 | READ_BUF(dummy); |
| 1088 | p += XDR_QUADLEN(dummy); |
| 1089 | } |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 1090 | |
| 1091 | /* ssp_encr_algs<> */ |
| 1092 | READ_BUF(4); |
Mi Jinlong | 5afa040 | 2010-11-09 09:39:23 +0800 | [diff] [blame] | 1093 | READ32(tmp); |
| 1094 | while (tmp--) { |
| 1095 | READ_BUF(4); |
| 1096 | READ32(dummy); |
| 1097 | READ_BUF(dummy); |
| 1098 | p += XDR_QUADLEN(dummy); |
| 1099 | } |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 1100 | |
| 1101 | /* ssp_window and ssp_num_gss_handles */ |
| 1102 | READ_BUF(8); |
| 1103 | READ32(dummy); |
| 1104 | READ32(dummy); |
| 1105 | break; |
| 1106 | default: |
| 1107 | goto xdr_error; |
| 1108 | } |
| 1109 | |
| 1110 | /* Ignore Implementation ID */ |
| 1111 | READ_BUF(4); /* nfs_impl_id4 array length */ |
| 1112 | READ32(dummy); |
| 1113 | |
| 1114 | if (dummy > 1) |
| 1115 | goto xdr_error; |
| 1116 | |
| 1117 | if (dummy == 1) { |
| 1118 | /* nii_domain */ |
| 1119 | READ_BUF(4); |
| 1120 | READ32(dummy); |
| 1121 | READ_BUF(dummy); |
| 1122 | p += XDR_QUADLEN(dummy); |
| 1123 | |
| 1124 | /* nii_name */ |
| 1125 | READ_BUF(4); |
| 1126 | READ32(dummy); |
| 1127 | READ_BUF(dummy); |
| 1128 | p += XDR_QUADLEN(dummy); |
| 1129 | |
| 1130 | /* nii_date */ |
| 1131 | READ_BUF(12); |
| 1132 | p += 3; |
| 1133 | } |
| 1134 | DECODE_TAIL; |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 1135 | } |
| 1136 | |
| 1137 | static __be32 |
| 1138 | nfsd4_decode_create_session(struct nfsd4_compoundargs *argp, |
| 1139 | struct nfsd4_create_session *sess) |
| 1140 | { |
Andy Adamson | ec6b5d7 | 2009-04-03 08:28:28 +0300 | [diff] [blame] | 1141 | DECODE_HEAD; |
| 1142 | |
| 1143 | u32 dummy; |
| 1144 | char *machine_name; |
Mi Jinlong | 5a02ab7 | 2011-03-11 12:13:55 +0800 | [diff] [blame^] | 1145 | int i; |
Andy Adamson | ec6b5d7 | 2009-04-03 08:28:28 +0300 | [diff] [blame] | 1146 | int nr_secflavs; |
| 1147 | |
| 1148 | READ_BUF(16); |
| 1149 | COPYMEM(&sess->clientid, 8); |
| 1150 | READ32(sess->seqid); |
| 1151 | READ32(sess->flags); |
| 1152 | |
| 1153 | /* Fore channel attrs */ |
| 1154 | READ_BUF(28); |
| 1155 | READ32(dummy); /* headerpadsz is always 0 */ |
| 1156 | READ32(sess->fore_channel.maxreq_sz); |
| 1157 | READ32(sess->fore_channel.maxresp_sz); |
| 1158 | READ32(sess->fore_channel.maxresp_cached); |
| 1159 | READ32(sess->fore_channel.maxops); |
| 1160 | READ32(sess->fore_channel.maxreqs); |
| 1161 | READ32(sess->fore_channel.nr_rdma_attrs); |
| 1162 | if (sess->fore_channel.nr_rdma_attrs == 1) { |
| 1163 | READ_BUF(4); |
| 1164 | READ32(sess->fore_channel.rdma_attrs); |
| 1165 | } else if (sess->fore_channel.nr_rdma_attrs > 1) { |
| 1166 | dprintk("Too many fore channel attr bitmaps!\n"); |
| 1167 | goto xdr_error; |
| 1168 | } |
| 1169 | |
| 1170 | /* Back channel attrs */ |
| 1171 | READ_BUF(28); |
| 1172 | READ32(dummy); /* headerpadsz is always 0 */ |
| 1173 | READ32(sess->back_channel.maxreq_sz); |
| 1174 | READ32(sess->back_channel.maxresp_sz); |
| 1175 | READ32(sess->back_channel.maxresp_cached); |
| 1176 | READ32(sess->back_channel.maxops); |
| 1177 | READ32(sess->back_channel.maxreqs); |
| 1178 | READ32(sess->back_channel.nr_rdma_attrs); |
| 1179 | if (sess->back_channel.nr_rdma_attrs == 1) { |
| 1180 | READ_BUF(4); |
| 1181 | READ32(sess->back_channel.rdma_attrs); |
| 1182 | } else if (sess->back_channel.nr_rdma_attrs > 1) { |
| 1183 | dprintk("Too many back channel attr bitmaps!\n"); |
| 1184 | goto xdr_error; |
| 1185 | } |
| 1186 | |
| 1187 | READ_BUF(8); |
| 1188 | READ32(sess->callback_prog); |
| 1189 | |
| 1190 | /* callback_sec_params4 */ |
| 1191 | READ32(nr_secflavs); |
| 1192 | for (i = 0; i < nr_secflavs; ++i) { |
| 1193 | READ_BUF(4); |
| 1194 | READ32(dummy); |
| 1195 | switch (dummy) { |
| 1196 | case RPC_AUTH_NULL: |
| 1197 | /* Nothing to read */ |
| 1198 | break; |
| 1199 | case RPC_AUTH_UNIX: |
| 1200 | READ_BUF(8); |
| 1201 | /* stamp */ |
| 1202 | READ32(dummy); |
| 1203 | |
| 1204 | /* machine name */ |
| 1205 | READ32(dummy); |
| 1206 | READ_BUF(dummy); |
| 1207 | SAVEMEM(machine_name, dummy); |
| 1208 | |
| 1209 | /* uid, gid */ |
| 1210 | READ_BUF(8); |
| 1211 | READ32(sess->uid); |
| 1212 | READ32(sess->gid); |
| 1213 | |
| 1214 | /* more gids */ |
| 1215 | READ_BUF(4); |
| 1216 | READ32(dummy); |
| 1217 | READ_BUF(dummy * 4); |
Andy Adamson | ec6b5d7 | 2009-04-03 08:28:28 +0300 | [diff] [blame] | 1218 | break; |
| 1219 | case RPC_AUTH_GSS: |
| 1220 | dprintk("RPC_AUTH_GSS callback secflavor " |
| 1221 | "not supported!\n"); |
| 1222 | READ_BUF(8); |
| 1223 | /* gcbp_service */ |
| 1224 | READ32(dummy); |
| 1225 | /* gcbp_handle_from_server */ |
| 1226 | READ32(dummy); |
| 1227 | READ_BUF(dummy); |
| 1228 | p += XDR_QUADLEN(dummy); |
| 1229 | /* gcbp_handle_from_client */ |
| 1230 | READ_BUF(4); |
| 1231 | READ32(dummy); |
| 1232 | READ_BUF(dummy); |
Andy Adamson | ec6b5d7 | 2009-04-03 08:28:28 +0300 | [diff] [blame] | 1233 | break; |
| 1234 | default: |
| 1235 | dprintk("Illegal callback secflavor\n"); |
| 1236 | return nfserr_inval; |
| 1237 | } |
| 1238 | } |
| 1239 | DECODE_TAIL; |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 1240 | } |
| 1241 | |
| 1242 | static __be32 |
| 1243 | nfsd4_decode_destroy_session(struct nfsd4_compoundargs *argp, |
| 1244 | struct nfsd4_destroy_session *destroy_session) |
| 1245 | { |
Benny Halevy | e10e0cf | 2009-04-03 08:28:38 +0300 | [diff] [blame] | 1246 | DECODE_HEAD; |
| 1247 | READ_BUF(NFS4_MAX_SESSIONID_LEN); |
| 1248 | COPYMEM(destroy_session->sessionid.data, NFS4_MAX_SESSIONID_LEN); |
| 1249 | |
| 1250 | DECODE_TAIL; |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 1251 | } |
| 1252 | |
| 1253 | static __be32 |
| 1254 | nfsd4_decode_sequence(struct nfsd4_compoundargs *argp, |
| 1255 | struct nfsd4_sequence *seq) |
| 1256 | { |
Benny Halevy | b85d4c0 | 2009-04-03 08:28:08 +0300 | [diff] [blame] | 1257 | DECODE_HEAD; |
| 1258 | |
| 1259 | READ_BUF(NFS4_MAX_SESSIONID_LEN + 16); |
| 1260 | COPYMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN); |
| 1261 | READ32(seq->seqid); |
| 1262 | READ32(seq->slotid); |
| 1263 | READ32(seq->maxslots); |
| 1264 | READ32(seq->cachethis); |
| 1265 | |
| 1266 | DECODE_TAIL; |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 1267 | } |
| 1268 | |
J. Bruce Fields | 4dc6ec0 | 2010-04-19 15:11:28 -0400 | [diff] [blame] | 1269 | static __be32 nfsd4_decode_reclaim_complete(struct nfsd4_compoundargs *argp, struct nfsd4_reclaim_complete *rc) |
| 1270 | { |
| 1271 | DECODE_HEAD; |
| 1272 | |
| 1273 | READ_BUF(4); |
| 1274 | READ32(rc->rca_one_fs); |
| 1275 | |
| 1276 | DECODE_TAIL; |
| 1277 | } |
| 1278 | |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 1279 | static __be32 |
Benny Halevy | 347e0ad | 2008-07-02 11:13:41 +0300 | [diff] [blame] | 1280 | nfsd4_decode_noop(struct nfsd4_compoundargs *argp, void *p) |
| 1281 | { |
| 1282 | return nfs_ok; |
| 1283 | } |
| 1284 | |
Benny Halevy | 3c375c6 | 2008-07-02 11:14:01 +0300 | [diff] [blame] | 1285 | static __be32 |
| 1286 | nfsd4_decode_notsupp(struct nfsd4_compoundargs *argp, void *p) |
| 1287 | { |
Benny Halevy | 1e685ec | 2009-03-04 23:06:06 +0200 | [diff] [blame] | 1288 | return nfserr_notsupp; |
Benny Halevy | 3c375c6 | 2008-07-02 11:14:01 +0300 | [diff] [blame] | 1289 | } |
| 1290 | |
Benny Halevy | 347e0ad | 2008-07-02 11:13:41 +0300 | [diff] [blame] | 1291 | typedef __be32(*nfsd4_dec)(struct nfsd4_compoundargs *argp, void *); |
| 1292 | |
| 1293 | static nfsd4_dec nfsd4_dec_ops[] = { |
J. Bruce Fields | ad1060c | 2008-07-18 15:04:16 -0400 | [diff] [blame] | 1294 | [OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access, |
| 1295 | [OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close, |
| 1296 | [OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit, |
| 1297 | [OP_CREATE] = (nfsd4_dec)nfsd4_decode_create, |
| 1298 | [OP_DELEGPURGE] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1299 | [OP_DELEGRETURN] = (nfsd4_dec)nfsd4_decode_delegreturn, |
| 1300 | [OP_GETATTR] = (nfsd4_dec)nfsd4_decode_getattr, |
| 1301 | [OP_GETFH] = (nfsd4_dec)nfsd4_decode_noop, |
| 1302 | [OP_LINK] = (nfsd4_dec)nfsd4_decode_link, |
| 1303 | [OP_LOCK] = (nfsd4_dec)nfsd4_decode_lock, |
| 1304 | [OP_LOCKT] = (nfsd4_dec)nfsd4_decode_lockt, |
| 1305 | [OP_LOCKU] = (nfsd4_dec)nfsd4_decode_locku, |
| 1306 | [OP_LOOKUP] = (nfsd4_dec)nfsd4_decode_lookup, |
| 1307 | [OP_LOOKUPP] = (nfsd4_dec)nfsd4_decode_noop, |
| 1308 | [OP_NVERIFY] = (nfsd4_dec)nfsd4_decode_verify, |
| 1309 | [OP_OPEN] = (nfsd4_dec)nfsd4_decode_open, |
| 1310 | [OP_OPENATTR] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1311 | [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_open_confirm, |
| 1312 | [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade, |
| 1313 | [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh, |
J. Bruce Fields | a1c8c4d | 2009-03-09 12:17:29 -0400 | [diff] [blame] | 1314 | [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_noop, |
J. Bruce Fields | ad1060c | 2008-07-18 15:04:16 -0400 | [diff] [blame] | 1315 | [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop, |
| 1316 | [OP_READ] = (nfsd4_dec)nfsd4_decode_read, |
| 1317 | [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir, |
| 1318 | [OP_READLINK] = (nfsd4_dec)nfsd4_decode_noop, |
| 1319 | [OP_REMOVE] = (nfsd4_dec)nfsd4_decode_remove, |
| 1320 | [OP_RENAME] = (nfsd4_dec)nfsd4_decode_rename, |
| 1321 | [OP_RENEW] = (nfsd4_dec)nfsd4_decode_renew, |
| 1322 | [OP_RESTOREFH] = (nfsd4_dec)nfsd4_decode_noop, |
| 1323 | [OP_SAVEFH] = (nfsd4_dec)nfsd4_decode_noop, |
| 1324 | [OP_SECINFO] = (nfsd4_dec)nfsd4_decode_secinfo, |
| 1325 | [OP_SETATTR] = (nfsd4_dec)nfsd4_decode_setattr, |
| 1326 | [OP_SETCLIENTID] = (nfsd4_dec)nfsd4_decode_setclientid, |
| 1327 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_dec)nfsd4_decode_setclientid_confirm, |
| 1328 | [OP_VERIFY] = (nfsd4_dec)nfsd4_decode_verify, |
| 1329 | [OP_WRITE] = (nfsd4_dec)nfsd4_decode_write, |
| 1330 | [OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_release_lockowner, |
Benny Halevy | 347e0ad | 2008-07-02 11:13:41 +0300 | [diff] [blame] | 1331 | }; |
| 1332 | |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 1333 | static nfsd4_dec nfsd41_dec_ops[] = { |
Randy Dunlap | 9064caa | 2009-04-28 16:48:25 -0700 | [diff] [blame] | 1334 | [OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access, |
| 1335 | [OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close, |
| 1336 | [OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit, |
| 1337 | [OP_CREATE] = (nfsd4_dec)nfsd4_decode_create, |
| 1338 | [OP_DELEGPURGE] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1339 | [OP_DELEGRETURN] = (nfsd4_dec)nfsd4_decode_delegreturn, |
| 1340 | [OP_GETATTR] = (nfsd4_dec)nfsd4_decode_getattr, |
| 1341 | [OP_GETFH] = (nfsd4_dec)nfsd4_decode_noop, |
| 1342 | [OP_LINK] = (nfsd4_dec)nfsd4_decode_link, |
| 1343 | [OP_LOCK] = (nfsd4_dec)nfsd4_decode_lock, |
| 1344 | [OP_LOCKT] = (nfsd4_dec)nfsd4_decode_lockt, |
| 1345 | [OP_LOCKU] = (nfsd4_dec)nfsd4_decode_locku, |
| 1346 | [OP_LOOKUP] = (nfsd4_dec)nfsd4_decode_lookup, |
| 1347 | [OP_LOOKUPP] = (nfsd4_dec)nfsd4_decode_noop, |
| 1348 | [OP_NVERIFY] = (nfsd4_dec)nfsd4_decode_verify, |
| 1349 | [OP_OPEN] = (nfsd4_dec)nfsd4_decode_open, |
| 1350 | [OP_OPENATTR] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1351 | [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1352 | [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade, |
| 1353 | [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh, |
| 1354 | [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1355 | [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop, |
| 1356 | [OP_READ] = (nfsd4_dec)nfsd4_decode_read, |
| 1357 | [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir, |
| 1358 | [OP_READLINK] = (nfsd4_dec)nfsd4_decode_noop, |
| 1359 | [OP_REMOVE] = (nfsd4_dec)nfsd4_decode_remove, |
| 1360 | [OP_RENAME] = (nfsd4_dec)nfsd4_decode_rename, |
| 1361 | [OP_RENEW] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1362 | [OP_RESTOREFH] = (nfsd4_dec)nfsd4_decode_noop, |
| 1363 | [OP_SAVEFH] = (nfsd4_dec)nfsd4_decode_noop, |
| 1364 | [OP_SECINFO] = (nfsd4_dec)nfsd4_decode_secinfo, |
| 1365 | [OP_SETATTR] = (nfsd4_dec)nfsd4_decode_setattr, |
| 1366 | [OP_SETCLIENTID] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1367 | [OP_SETCLIENTID_CONFIRM]= (nfsd4_dec)nfsd4_decode_notsupp, |
| 1368 | [OP_VERIFY] = (nfsd4_dec)nfsd4_decode_verify, |
| 1369 | [OP_WRITE] = (nfsd4_dec)nfsd4_decode_write, |
| 1370 | [OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_notsupp, |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 1371 | |
| 1372 | /* new operations for NFSv4.1 */ |
Randy Dunlap | 9064caa | 2009-04-28 16:48:25 -0700 | [diff] [blame] | 1373 | [OP_BACKCHANNEL_CTL] = (nfsd4_dec)nfsd4_decode_notsupp, |
J. Bruce Fields | 1d1bc8f | 2010-10-04 23:12:59 -0400 | [diff] [blame] | 1374 | [OP_BIND_CONN_TO_SESSION]= (nfsd4_dec)nfsd4_decode_bind_conn_to_session, |
Randy Dunlap | 9064caa | 2009-04-28 16:48:25 -0700 | [diff] [blame] | 1375 | [OP_EXCHANGE_ID] = (nfsd4_dec)nfsd4_decode_exchange_id, |
| 1376 | [OP_CREATE_SESSION] = (nfsd4_dec)nfsd4_decode_create_session, |
| 1377 | [OP_DESTROY_SESSION] = (nfsd4_dec)nfsd4_decode_destroy_session, |
| 1378 | [OP_FREE_STATEID] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1379 | [OP_GET_DIR_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1380 | [OP_GETDEVICEINFO] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1381 | [OP_GETDEVICELIST] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1382 | [OP_LAYOUTCOMMIT] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1383 | [OP_LAYOUTGET] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1384 | [OP_LAYOUTRETURN] = (nfsd4_dec)nfsd4_decode_notsupp, |
J. Bruce Fields | 04f4ad1 | 2010-12-16 09:51:13 -0500 | [diff] [blame] | 1385 | [OP_SECINFO_NO_NAME] = (nfsd4_dec)nfsd4_decode_secinfo_no_name, |
Randy Dunlap | 9064caa | 2009-04-28 16:48:25 -0700 | [diff] [blame] | 1386 | [OP_SEQUENCE] = (nfsd4_dec)nfsd4_decode_sequence, |
| 1387 | [OP_SET_SSV] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1388 | [OP_TEST_STATEID] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1389 | [OP_WANT_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1390 | [OP_DESTROY_CLIENTID] = (nfsd4_dec)nfsd4_decode_notsupp, |
J. Bruce Fields | 4dc6ec0 | 2010-04-19 15:11:28 -0400 | [diff] [blame] | 1391 | [OP_RECLAIM_COMPLETE] = (nfsd4_dec)nfsd4_decode_reclaim_complete, |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 1392 | }; |
| 1393 | |
Benny Halevy | f2feb96 | 2008-07-02 11:14:22 +0300 | [diff] [blame] | 1394 | struct nfsd4_minorversion_ops { |
| 1395 | nfsd4_dec *decoders; |
| 1396 | int nops; |
| 1397 | }; |
| 1398 | |
| 1399 | static struct nfsd4_minorversion_ops nfsd4_minorversion[] = { |
J. Bruce Fields | ad1060c | 2008-07-18 15:04:16 -0400 | [diff] [blame] | 1400 | [0] = { nfsd4_dec_ops, ARRAY_SIZE(nfsd4_dec_ops) }, |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 1401 | [1] = { nfsd41_dec_ops, ARRAY_SIZE(nfsd41_dec_ops) }, |
Benny Halevy | f2feb96 | 2008-07-02 11:14:22 +0300 | [diff] [blame] | 1402 | }; |
| 1403 | |
Benny Halevy | 347e0ad | 2008-07-02 11:13:41 +0300 | [diff] [blame] | 1404 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1405 | nfsd4_decode_compound(struct nfsd4_compoundargs *argp) |
| 1406 | { |
| 1407 | DECODE_HEAD; |
| 1408 | struct nfsd4_op *op; |
Benny Halevy | f2feb96 | 2008-07-02 11:14:22 +0300 | [diff] [blame] | 1409 | struct nfsd4_minorversion_ops *ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1410 | int i; |
| 1411 | |
| 1412 | /* |
| 1413 | * XXX: According to spec, we should check the tag |
| 1414 | * for UTF-8 compliance. I'm postponing this for |
| 1415 | * now because it seems that some clients do use |
| 1416 | * binary tags. |
| 1417 | */ |
| 1418 | READ_BUF(4); |
| 1419 | READ32(argp->taglen); |
| 1420 | READ_BUF(argp->taglen + 8); |
| 1421 | SAVEMEM(argp->tag, argp->taglen); |
| 1422 | READ32(argp->minorversion); |
| 1423 | READ32(argp->opcnt); |
| 1424 | |
| 1425 | if (argp->taglen > NFSD4_MAX_TAGLEN) |
| 1426 | goto xdr_error; |
| 1427 | if (argp->opcnt > 100) |
| 1428 | goto xdr_error; |
| 1429 | |
Tobias Klauser | e8c96f8 | 2006-03-24 03:15:34 -0800 | [diff] [blame] | 1430 | if (argp->opcnt > ARRAY_SIZE(argp->iops)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1431 | argp->ops = kmalloc(argp->opcnt * sizeof(*argp->ops), GFP_KERNEL); |
| 1432 | if (!argp->ops) { |
| 1433 | argp->ops = argp->iops; |
Chuck Lever | 817cb9d | 2007-09-11 18:01:20 -0400 | [diff] [blame] | 1434 | dprintk("nfsd: couldn't allocate room for COMPOUND\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1435 | goto xdr_error; |
| 1436 | } |
| 1437 | } |
| 1438 | |
Benny Halevy | f2feb96 | 2008-07-02 11:14:22 +0300 | [diff] [blame] | 1439 | if (argp->minorversion >= ARRAY_SIZE(nfsd4_minorversion)) |
Benny Halevy | 30cff1f | 2008-07-02 11:13:18 +0300 | [diff] [blame] | 1440 | argp->opcnt = 0; |
| 1441 | |
Benny Halevy | f2feb96 | 2008-07-02 11:14:22 +0300 | [diff] [blame] | 1442 | ops = &nfsd4_minorversion[argp->minorversion]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1443 | for (i = 0; i < argp->opcnt; i++) { |
| 1444 | op = &argp->ops[i]; |
| 1445 | op->replay = NULL; |
| 1446 | |
| 1447 | /* |
| 1448 | * We can't use READ_BUF() here because we need to handle |
| 1449 | * a missing opcode as an OP_WRITE + 1. So we need to check |
| 1450 | * to see if we're truly at the end of our buffer or if there |
| 1451 | * is another page we need to flip to. |
| 1452 | */ |
| 1453 | |
| 1454 | if (argp->p == argp->end) { |
| 1455 | if (argp->pagelen < 4) { |
| 1456 | /* There isn't an opcode still on the wire */ |
| 1457 | op->opnum = OP_WRITE + 1; |
| 1458 | op->status = nfserr_bad_xdr; |
| 1459 | argp->opcnt = i+1; |
| 1460 | break; |
| 1461 | } |
| 1462 | |
| 1463 | /* |
| 1464 | * False alarm. We just hit a page boundary, but there |
| 1465 | * is still data available. Move pointer across page |
| 1466 | * boundary. *snip from READ_BUF* |
| 1467 | */ |
| 1468 | argp->p = page_address(argp->pagelist[0]); |
| 1469 | argp->pagelist++; |
| 1470 | if (argp->pagelen < PAGE_SIZE) { |
Neil Brown | 2bc3c11 | 2010-04-20 12:16:52 +1000 | [diff] [blame] | 1471 | argp->end = argp->p + (argp->pagelen>>2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1472 | argp->pagelen = 0; |
| 1473 | } else { |
Neil Brown | 2bc3c11 | 2010-04-20 12:16:52 +1000 | [diff] [blame] | 1474 | argp->end = argp->p + (PAGE_SIZE>>2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1475 | argp->pagelen -= PAGE_SIZE; |
| 1476 | } |
| 1477 | } |
| 1478 | op->opnum = ntohl(*argp->p++); |
| 1479 | |
Ricardo Labiaga | de3cab7 | 2009-12-11 20:03:27 -0800 | [diff] [blame] | 1480 | if (op->opnum >= FIRST_NFS4_OP && op->opnum <= LAST_NFS4_OP) |
Benny Halevy | f2feb96 | 2008-07-02 11:14:22 +0300 | [diff] [blame] | 1481 | op->status = ops->decoders[op->opnum](argp, &op->u); |
Benny Halevy | 347e0ad | 2008-07-02 11:13:41 +0300 | [diff] [blame] | 1482 | else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1483 | op->opnum = OP_ILLEGAL; |
| 1484 | op->status = nfserr_op_illegal; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1485 | } |
| 1486 | |
| 1487 | if (op->status) { |
| 1488 | argp->opcnt = i+1; |
| 1489 | break; |
| 1490 | } |
| 1491 | } |
| 1492 | |
| 1493 | DECODE_TAIL; |
| 1494 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1495 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1496 | #define WRITE32(n) *p++ = htonl(n) |
| 1497 | #define WRITE64(n) do { \ |
| 1498 | *p++ = htonl((u32)((n) >> 32)); \ |
| 1499 | *p++ = htonl((u32)(n)); \ |
| 1500 | } while (0) |
Harvey Harrison | 5108b27 | 2008-07-17 21:33:04 -0700 | [diff] [blame] | 1501 | #define WRITEMEM(ptr,nbytes) do { if (nbytes > 0) { \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1502 | *(p + XDR_QUADLEN(nbytes) -1) = 0; \ |
| 1503 | memcpy(p, ptr, nbytes); \ |
| 1504 | p += XDR_QUADLEN(nbytes); \ |
Harvey Harrison | 5108b27 | 2008-07-17 21:33:04 -0700 | [diff] [blame] | 1505 | }} while (0) |
J. Bruce Fields | c654b8a | 2009-04-16 17:33:25 -0400 | [diff] [blame] | 1506 | |
| 1507 | static void write32(__be32 **p, u32 n) |
| 1508 | { |
| 1509 | *(*p)++ = n; |
| 1510 | } |
| 1511 | |
| 1512 | static void write64(__be32 **p, u64 n) |
| 1513 | { |
| 1514 | write32(p, (u32)(n >> 32)); |
| 1515 | write32(p, (u32)n); |
| 1516 | } |
| 1517 | |
| 1518 | static void write_change(__be32 **p, struct kstat *stat, struct inode *inode) |
| 1519 | { |
| 1520 | if (IS_I_VERSION(inode)) { |
| 1521 | write64(p, inode->i_version); |
| 1522 | } else { |
| 1523 | write32(p, stat->ctime.tv_sec); |
| 1524 | write32(p, stat->ctime.tv_nsec); |
| 1525 | } |
| 1526 | } |
| 1527 | |
| 1528 | static void write_cinfo(__be32 **p, struct nfsd4_change_info *c) |
| 1529 | { |
| 1530 | write32(p, c->atomic); |
| 1531 | if (c->change_supported) { |
| 1532 | write64(p, c->before_change); |
| 1533 | write64(p, c->after_change); |
| 1534 | } else { |
| 1535 | write32(p, c->before_ctime_sec); |
| 1536 | write32(p, c->before_ctime_nsec); |
| 1537 | write32(p, c->after_ctime_sec); |
| 1538 | write32(p, c->after_ctime_nsec); |
| 1539 | } |
| 1540 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1541 | |
| 1542 | #define RESERVE_SPACE(nbytes) do { \ |
| 1543 | p = resp->p; \ |
| 1544 | BUG_ON(p + XDR_QUADLEN(nbytes) > resp->end); \ |
| 1545 | } while (0) |
| 1546 | #define ADJUST_ARGS() resp->p = p |
| 1547 | |
| 1548 | /* |
| 1549 | * Header routine to setup seqid operation replay cache |
| 1550 | */ |
| 1551 | #define ENCODE_SEQID_OP_HEAD \ |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 1552 | __be32 *save; \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1553 | \ |
| 1554 | save = resp->p; |
| 1555 | |
| 1556 | /* |
NeilBrown | 7fb64ce | 2005-07-07 17:59:20 -0700 | [diff] [blame] | 1557 | * Routine for encoding the result of a "seqid-mutating" NFSv4 operation. This |
| 1558 | * is where sequence id's are incremented, and the replay cache is filled. |
| 1559 | * Note that we increment sequence id's here, at the last moment, so we're sure |
| 1560 | * we know whether the error to be returned is a sequence id mutating error. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1561 | */ |
| 1562 | |
| 1563 | #define ENCODE_SEQID_OP_TAIL(stateowner) do { \ |
| 1564 | if (seqid_mutating_err(nfserr) && stateowner) { \ |
NeilBrown | bd9aac5 | 2005-07-07 17:59:19 -0700 | [diff] [blame] | 1565 | stateowner->so_seqid++; \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1566 | stateowner->so_replay.rp_status = nfserr; \ |
| 1567 | stateowner->so_replay.rp_buflen = \ |
| 1568 | (((char *)(resp)->p - (char *)save)); \ |
| 1569 | memcpy(stateowner->so_replay.rp_buf, save, \ |
| 1570 | stateowner->so_replay.rp_buflen); \ |
| 1571 | } } while (0); |
| 1572 | |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1573 | /* Encode as an array of strings the string given with components |
Daniel Mack | 3ad2f3f | 2010-02-03 08:01:28 +0800 | [diff] [blame] | 1574 | * separated @sep. |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1575 | */ |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1576 | static __be32 nfsd4_encode_components(char sep, char *components, |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 1577 | __be32 **pp, int *buflen) |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1578 | { |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 1579 | __be32 *p = *pp; |
| 1580 | __be32 *countp = p; |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1581 | int strlen, count=0; |
| 1582 | char *str, *end; |
| 1583 | |
| 1584 | dprintk("nfsd4_encode_components(%s)\n", components); |
| 1585 | if ((*buflen -= 4) < 0) |
| 1586 | return nfserr_resource; |
| 1587 | WRITE32(0); /* We will fill this in with @count later */ |
| 1588 | end = str = components; |
| 1589 | while (*end) { |
| 1590 | for (; *end && (*end != sep); end++) |
| 1591 | ; /* Point to end of component */ |
| 1592 | strlen = end - str; |
| 1593 | if (strlen) { |
| 1594 | if ((*buflen -= ((XDR_QUADLEN(strlen) << 2) + 4)) < 0) |
| 1595 | return nfserr_resource; |
| 1596 | WRITE32(strlen); |
| 1597 | WRITEMEM(str, strlen); |
| 1598 | count++; |
| 1599 | } |
| 1600 | else |
| 1601 | end++; |
| 1602 | str = end; |
| 1603 | } |
| 1604 | *pp = p; |
| 1605 | p = countp; |
| 1606 | WRITE32(count); |
| 1607 | return 0; |
| 1608 | } |
| 1609 | |
| 1610 | /* |
| 1611 | * encode a location element of a fs_locations structure |
| 1612 | */ |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1613 | static __be32 nfsd4_encode_fs_location4(struct nfsd4_fs_location *location, |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 1614 | __be32 **pp, int *buflen) |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1615 | { |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1616 | __be32 status; |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 1617 | __be32 *p = *pp; |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1618 | |
| 1619 | status = nfsd4_encode_components(':', location->hosts, &p, buflen); |
| 1620 | if (status) |
| 1621 | return status; |
| 1622 | status = nfsd4_encode_components('/', location->path, &p, buflen); |
| 1623 | if (status) |
| 1624 | return status; |
| 1625 | *pp = p; |
| 1626 | return 0; |
| 1627 | } |
| 1628 | |
| 1629 | /* |
| 1630 | * Return the path to an export point in the pseudo filesystem namespace |
| 1631 | * Returned string is safe to use as long as the caller holds a reference |
| 1632 | * to @exp. |
| 1633 | */ |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1634 | static char *nfsd4_path(struct svc_rqst *rqstp, struct svc_export *exp, __be32 *stat) |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1635 | { |
| 1636 | struct svc_fh tmp_fh; |
Trond Myklebust | 2671a4b | 2009-09-02 16:48:32 -0400 | [diff] [blame] | 1637 | char *path = NULL, *rootpath; |
| 1638 | size_t rootlen; |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1639 | |
| 1640 | fh_init(&tmp_fh, NFS4_FHSIZE); |
J. Bruce Fields | df547ef | 2007-07-17 04:04:43 -0700 | [diff] [blame] | 1641 | *stat = exp_pseudoroot(rqstp, &tmp_fh); |
Al Viro | cc45f01 | 2006-10-19 23:28:44 -0700 | [diff] [blame] | 1642 | if (*stat) |
| 1643 | return NULL; |
Jan Blunck | 5477549 | 2008-02-14 19:38:39 -0800 | [diff] [blame] | 1644 | rootpath = tmp_fh.fh_export->ex_pathname; |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1645 | |
Jan Blunck | 5477549 | 2008-02-14 19:38:39 -0800 | [diff] [blame] | 1646 | path = exp->ex_pathname; |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1647 | |
Trond Myklebust | 2671a4b | 2009-09-02 16:48:32 -0400 | [diff] [blame] | 1648 | rootlen = strlen(rootpath); |
| 1649 | if (strncmp(path, rootpath, rootlen)) { |
Chuck Lever | 817cb9d | 2007-09-11 18:01:20 -0400 | [diff] [blame] | 1650 | dprintk("nfsd: fs_locations failed;" |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1651 | "%s is not contained in %s\n", path, rootpath); |
Al Viro | cc45f01 | 2006-10-19 23:28:44 -0700 | [diff] [blame] | 1652 | *stat = nfserr_notsupp; |
Trond Myklebust | 2671a4b | 2009-09-02 16:48:32 -0400 | [diff] [blame] | 1653 | path = NULL; |
| 1654 | goto out; |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1655 | } |
Trond Myklebust | 2671a4b | 2009-09-02 16:48:32 -0400 | [diff] [blame] | 1656 | path += rootlen; |
| 1657 | out: |
| 1658 | fh_put(&tmp_fh); |
| 1659 | return path; |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1660 | } |
| 1661 | |
| 1662 | /* |
| 1663 | * encode a fs_locations structure |
| 1664 | */ |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1665 | static __be32 nfsd4_encode_fs_locations(struct svc_rqst *rqstp, |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1666 | struct svc_export *exp, |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 1667 | __be32 **pp, int *buflen) |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1668 | { |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1669 | __be32 status; |
Al Viro | cc45f01 | 2006-10-19 23:28:44 -0700 | [diff] [blame] | 1670 | int i; |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 1671 | __be32 *p = *pp; |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1672 | struct nfsd4_fs_locations *fslocs = &exp->ex_fslocs; |
Al Viro | cc45f01 | 2006-10-19 23:28:44 -0700 | [diff] [blame] | 1673 | char *root = nfsd4_path(rqstp, exp, &status); |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1674 | |
Al Viro | cc45f01 | 2006-10-19 23:28:44 -0700 | [diff] [blame] | 1675 | if (status) |
| 1676 | return status; |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1677 | status = nfsd4_encode_components('/', root, &p, buflen); |
| 1678 | if (status) |
| 1679 | return status; |
| 1680 | if ((*buflen -= 4) < 0) |
| 1681 | return nfserr_resource; |
| 1682 | WRITE32(fslocs->locations_count); |
| 1683 | for (i=0; i<fslocs->locations_count; i++) { |
| 1684 | status = nfsd4_encode_fs_location4(&fslocs->locations[i], |
| 1685 | &p, buflen); |
| 1686 | if (status) |
| 1687 | return status; |
| 1688 | } |
| 1689 | *pp = p; |
| 1690 | return 0; |
| 1691 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1692 | |
| 1693 | static u32 nfs4_ftypes[16] = { |
| 1694 | NF4BAD, NF4FIFO, NF4CHR, NF4BAD, |
| 1695 | NF4DIR, NF4BAD, NF4BLK, NF4BAD, |
| 1696 | NF4REG, NF4BAD, NF4LNK, NF4BAD, |
| 1697 | NF4SOCK, NF4BAD, NF4LNK, NF4BAD, |
| 1698 | }; |
| 1699 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1700 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1701 | nfsd4_encode_name(struct svc_rqst *rqstp, int whotype, uid_t id, int group, |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 1702 | __be32 **p, int *buflen) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1703 | { |
| 1704 | int status; |
| 1705 | |
| 1706 | if (*buflen < (XDR_QUADLEN(IDMAP_NAMESZ) << 2) + 4) |
| 1707 | return nfserr_resource; |
| 1708 | if (whotype != NFS4_ACL_WHO_NAMED) |
| 1709 | status = nfs4_acl_write_who(whotype, (u8 *)(*p + 1)); |
| 1710 | else if (group) |
| 1711 | status = nfsd_map_gid_to_name(rqstp, id, (u8 *)(*p + 1)); |
| 1712 | else |
| 1713 | status = nfsd_map_uid_to_name(rqstp, id, (u8 *)(*p + 1)); |
| 1714 | if (status < 0) |
| 1715 | return nfserrno(status); |
| 1716 | *p = xdr_encode_opaque(*p, NULL, status); |
| 1717 | *buflen -= (XDR_QUADLEN(status) << 2) + 4; |
| 1718 | BUG_ON(*buflen < 0); |
| 1719 | return 0; |
| 1720 | } |
| 1721 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1722 | static inline __be32 |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 1723 | nfsd4_encode_user(struct svc_rqst *rqstp, uid_t uid, __be32 **p, int *buflen) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1724 | { |
| 1725 | return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, uid, 0, p, buflen); |
| 1726 | } |
| 1727 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1728 | static inline __be32 |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 1729 | nfsd4_encode_group(struct svc_rqst *rqstp, uid_t gid, __be32 **p, int *buflen) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1730 | { |
| 1731 | return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, gid, 1, p, buflen); |
| 1732 | } |
| 1733 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1734 | static inline __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1735 | nfsd4_encode_aclname(struct svc_rqst *rqstp, int whotype, uid_t id, int group, |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 1736 | __be32 **p, int *buflen) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1737 | { |
| 1738 | return nfsd4_encode_name(rqstp, whotype, id, group, p, buflen); |
| 1739 | } |
| 1740 | |
J.Bruce Fields | 42ca099 | 2006-10-04 02:16:20 -0700 | [diff] [blame] | 1741 | #define WORD0_ABSENT_FS_ATTRS (FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_FSID | \ |
| 1742 | FATTR4_WORD0_RDATTR_ERROR) |
| 1743 | #define WORD1_ABSENT_FS_ATTRS FATTR4_WORD1_MOUNTED_ON_FILEID |
| 1744 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1745 | static __be32 fattr_handle_absent_fs(u32 *bmval0, u32 *bmval1, u32 *rdattr_err) |
J.Bruce Fields | 42ca099 | 2006-10-04 02:16:20 -0700 | [diff] [blame] | 1746 | { |
| 1747 | /* As per referral draft: */ |
| 1748 | if (*bmval0 & ~WORD0_ABSENT_FS_ATTRS || |
| 1749 | *bmval1 & ~WORD1_ABSENT_FS_ATTRS) { |
| 1750 | if (*bmval0 & FATTR4_WORD0_RDATTR_ERROR || |
| 1751 | *bmval0 & FATTR4_WORD0_FS_LOCATIONS) |
| 1752 | *rdattr_err = NFSERR_MOVED; |
| 1753 | else |
| 1754 | return nfserr_moved; |
| 1755 | } |
| 1756 | *bmval0 &= WORD0_ABSENT_FS_ATTRS; |
| 1757 | *bmval1 &= WORD1_ABSENT_FS_ATTRS; |
| 1758 | return 0; |
| 1759 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1760 | |
| 1761 | /* |
| 1762 | * Note: @fhp can be NULL; in this case, we might have to compose the filehandle |
| 1763 | * ourselves. |
| 1764 | * |
| 1765 | * @countp is the buffer size in _words_; upon successful return this becomes |
| 1766 | * replaced with the number of words written. |
| 1767 | */ |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1768 | __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1769 | nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp, |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 1770 | struct dentry *dentry, __be32 *buffer, int *countp, u32 *bmval, |
Frank Filz | 406a7ea | 2007-11-27 11:34:05 -0800 | [diff] [blame] | 1771 | struct svc_rqst *rqstp, int ignore_crossmnt) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1772 | { |
| 1773 | u32 bmval0 = bmval[0]; |
| 1774 | u32 bmval1 = bmval[1]; |
Andy Adamson | 7e70570 | 2009-04-03 08:29:11 +0300 | [diff] [blame] | 1775 | u32 bmval2 = bmval[2]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1776 | struct kstat stat; |
| 1777 | struct svc_fh tempfh; |
| 1778 | struct kstatfs statfs; |
| 1779 | int buflen = *countp << 2; |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 1780 | __be32 *attrlenp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1781 | u32 dummy; |
| 1782 | u64 dummy64; |
J.Bruce Fields | 42ca099 | 2006-10-04 02:16:20 -0700 | [diff] [blame] | 1783 | u32 rdattr_err = 0; |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 1784 | __be32 *p = buffer; |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1785 | __be32 status; |
Al Viro | b8dd7b9 | 2006-10-19 23:29:01 -0700 | [diff] [blame] | 1786 | int err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1787 | int aclsupport = 0; |
| 1788 | struct nfs4_acl *acl = NULL; |
Andy Adamson | 7e70570 | 2009-04-03 08:29:11 +0300 | [diff] [blame] | 1789 | struct nfsd4_compoundres *resp = rqstp->rq_resp; |
| 1790 | u32 minorversion = resp->cstate.minorversion; |
Christoph Hellwig | ebabe9a | 2010-07-07 18:53:11 +0200 | [diff] [blame] | 1791 | struct path path = { |
| 1792 | .mnt = exp->ex_path.mnt, |
| 1793 | .dentry = dentry, |
| 1794 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1795 | |
| 1796 | BUG_ON(bmval1 & NFSD_WRITEONLY_ATTRS_WORD1); |
Andy Adamson | 7e70570 | 2009-04-03 08:29:11 +0300 | [diff] [blame] | 1797 | BUG_ON(bmval0 & ~nfsd_suppattrs0(minorversion)); |
| 1798 | BUG_ON(bmval1 & ~nfsd_suppattrs1(minorversion)); |
| 1799 | BUG_ON(bmval2 & ~nfsd_suppattrs2(minorversion)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1800 | |
J.Bruce Fields | 42ca099 | 2006-10-04 02:16:20 -0700 | [diff] [blame] | 1801 | if (exp->ex_fslocs.migrated) { |
Andy Adamson | 7e70570 | 2009-04-03 08:29:11 +0300 | [diff] [blame] | 1802 | BUG_ON(bmval[2]); |
J.Bruce Fields | 42ca099 | 2006-10-04 02:16:20 -0700 | [diff] [blame] | 1803 | status = fattr_handle_absent_fs(&bmval0, &bmval1, &rdattr_err); |
| 1804 | if (status) |
| 1805 | goto out; |
| 1806 | } |
| 1807 | |
Jan Blunck | 5477549 | 2008-02-14 19:38:39 -0800 | [diff] [blame] | 1808 | err = vfs_getattr(exp->ex_path.mnt, dentry, &stat); |
Al Viro | b8dd7b9 | 2006-10-19 23:29:01 -0700 | [diff] [blame] | 1809 | if (err) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1810 | goto out_nfserr; |
J. Bruce Fields | a16e92e | 2007-09-28 16:45:51 -0400 | [diff] [blame] | 1811 | if ((bmval0 & (FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL | |
| 1812 | FATTR4_WORD0_MAXNAME)) || |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1813 | (bmval1 & (FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | |
| 1814 | FATTR4_WORD1_SPACE_TOTAL))) { |
Christoph Hellwig | ebabe9a | 2010-07-07 18:53:11 +0200 | [diff] [blame] | 1815 | err = vfs_statfs(&path, &statfs); |
Al Viro | b8dd7b9 | 2006-10-19 23:29:01 -0700 | [diff] [blame] | 1816 | if (err) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1817 | goto out_nfserr; |
| 1818 | } |
| 1819 | if ((bmval0 & (FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FSID)) && !fhp) { |
| 1820 | fh_init(&tempfh, NFS4_FHSIZE); |
| 1821 | status = fh_compose(&tempfh, exp, dentry, NULL); |
| 1822 | if (status) |
| 1823 | goto out; |
| 1824 | fhp = &tempfh; |
| 1825 | } |
| 1826 | if (bmval0 & (FATTR4_WORD0_ACL | FATTR4_WORD0_ACLSUPPORT |
| 1827 | | FATTR4_WORD0_SUPPORTED_ATTRS)) { |
Al Viro | b8dd7b9 | 2006-10-19 23:29:01 -0700 | [diff] [blame] | 1828 | err = nfsd4_get_nfs4_acl(rqstp, dentry, &acl); |
| 1829 | aclsupport = (err == 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1830 | if (bmval0 & FATTR4_WORD0_ACL) { |
Al Viro | b8dd7b9 | 2006-10-19 23:29:01 -0700 | [diff] [blame] | 1831 | if (err == -EOPNOTSUPP) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1832 | bmval0 &= ~FATTR4_WORD0_ACL; |
Al Viro | b8dd7b9 | 2006-10-19 23:29:01 -0700 | [diff] [blame] | 1833 | else if (err == -EINVAL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1834 | status = nfserr_attrnotsupp; |
| 1835 | goto out; |
Al Viro | b8dd7b9 | 2006-10-19 23:29:01 -0700 | [diff] [blame] | 1836 | } else if (err != 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1837 | goto out_nfserr; |
| 1838 | } |
| 1839 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1840 | |
Benny Halevy | 2b44f1b | 2010-09-30 20:47:46 +0200 | [diff] [blame] | 1841 | if (bmval2) { |
| 1842 | if ((buflen -= 16) < 0) |
| 1843 | goto out_resource; |
Andy Adamson | 7e70570 | 2009-04-03 08:29:11 +0300 | [diff] [blame] | 1844 | WRITE32(3); |
| 1845 | WRITE32(bmval0); |
| 1846 | WRITE32(bmval1); |
| 1847 | WRITE32(bmval2); |
Benny Halevy | 2b44f1b | 2010-09-30 20:47:46 +0200 | [diff] [blame] | 1848 | } else if (bmval1) { |
| 1849 | if ((buflen -= 12) < 0) |
| 1850 | goto out_resource; |
Andy Adamson | 7e70570 | 2009-04-03 08:29:11 +0300 | [diff] [blame] | 1851 | WRITE32(2); |
| 1852 | WRITE32(bmval0); |
| 1853 | WRITE32(bmval1); |
| 1854 | } else { |
Benny Halevy | 2b44f1b | 2010-09-30 20:47:46 +0200 | [diff] [blame] | 1855 | if ((buflen -= 8) < 0) |
| 1856 | goto out_resource; |
Andy Adamson | 7e70570 | 2009-04-03 08:29:11 +0300 | [diff] [blame] | 1857 | WRITE32(1); |
| 1858 | WRITE32(bmval0); |
| 1859 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1860 | attrlenp = p++; /* to be backfilled later */ |
| 1861 | |
| 1862 | if (bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) { |
Andy Adamson | 7e70570 | 2009-04-03 08:29:11 +0300 | [diff] [blame] | 1863 | u32 word0 = nfsd_suppattrs0(minorversion); |
| 1864 | u32 word1 = nfsd_suppattrs1(minorversion); |
| 1865 | u32 word2 = nfsd_suppattrs2(minorversion); |
| 1866 | |
J.Bruce Fields | 42ca099 | 2006-10-04 02:16:20 -0700 | [diff] [blame] | 1867 | if (!aclsupport) |
| 1868 | word0 &= ~FATTR4_WORD0_ACL; |
Andy Adamson | 7e70570 | 2009-04-03 08:29:11 +0300 | [diff] [blame] | 1869 | if (!word2) { |
Benny Halevy | 2b44f1b | 2010-09-30 20:47:46 +0200 | [diff] [blame] | 1870 | if ((buflen -= 12) < 0) |
| 1871 | goto out_resource; |
Andy Adamson | 7e70570 | 2009-04-03 08:29:11 +0300 | [diff] [blame] | 1872 | WRITE32(2); |
| 1873 | WRITE32(word0); |
| 1874 | WRITE32(word1); |
| 1875 | } else { |
Benny Halevy | 2b44f1b | 2010-09-30 20:47:46 +0200 | [diff] [blame] | 1876 | if ((buflen -= 16) < 0) |
| 1877 | goto out_resource; |
Andy Adamson | 7e70570 | 2009-04-03 08:29:11 +0300 | [diff] [blame] | 1878 | WRITE32(3); |
| 1879 | WRITE32(word0); |
| 1880 | WRITE32(word1); |
| 1881 | WRITE32(word2); |
| 1882 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1883 | } |
| 1884 | if (bmval0 & FATTR4_WORD0_TYPE) { |
| 1885 | if ((buflen -= 4) < 0) |
| 1886 | goto out_resource; |
| 1887 | dummy = nfs4_ftypes[(stat.mode & S_IFMT) >> 12]; |
| 1888 | if (dummy == NF4BAD) |
| 1889 | goto out_serverfault; |
| 1890 | WRITE32(dummy); |
| 1891 | } |
| 1892 | if (bmval0 & FATTR4_WORD0_FH_EXPIRE_TYPE) { |
| 1893 | if ((buflen -= 4) < 0) |
| 1894 | goto out_resource; |
NeilBrown | 4964000 | 2005-06-23 22:02:58 -0700 | [diff] [blame] | 1895 | if (exp->ex_flags & NFSEXP_NOSUBTREECHECK) |
NeilBrown | e34ac86 | 2005-07-07 17:59:30 -0700 | [diff] [blame] | 1896 | WRITE32(NFS4_FH_PERSISTENT); |
NeilBrown | 4964000 | 2005-06-23 22:02:58 -0700 | [diff] [blame] | 1897 | else |
NeilBrown | e34ac86 | 2005-07-07 17:59:30 -0700 | [diff] [blame] | 1898 | WRITE32(NFS4_FH_PERSISTENT|NFS4_FH_VOL_RENAME); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1899 | } |
| 1900 | if (bmval0 & FATTR4_WORD0_CHANGE) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1901 | if ((buflen -= 8) < 0) |
| 1902 | goto out_resource; |
J. Bruce Fields | c654b8a | 2009-04-16 17:33:25 -0400 | [diff] [blame] | 1903 | write_change(&p, &stat, dentry->d_inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1904 | } |
| 1905 | if (bmval0 & FATTR4_WORD0_SIZE) { |
| 1906 | if ((buflen -= 8) < 0) |
| 1907 | goto out_resource; |
| 1908 | WRITE64(stat.size); |
| 1909 | } |
| 1910 | if (bmval0 & FATTR4_WORD0_LINK_SUPPORT) { |
| 1911 | if ((buflen -= 4) < 0) |
| 1912 | goto out_resource; |
| 1913 | WRITE32(1); |
| 1914 | } |
| 1915 | if (bmval0 & FATTR4_WORD0_SYMLINK_SUPPORT) { |
| 1916 | if ((buflen -= 4) < 0) |
| 1917 | goto out_resource; |
| 1918 | WRITE32(1); |
| 1919 | } |
| 1920 | if (bmval0 & FATTR4_WORD0_NAMED_ATTR) { |
| 1921 | if ((buflen -= 4) < 0) |
| 1922 | goto out_resource; |
| 1923 | WRITE32(0); |
| 1924 | } |
| 1925 | if (bmval0 & FATTR4_WORD0_FSID) { |
| 1926 | if ((buflen -= 16) < 0) |
| 1927 | goto out_resource; |
J.Bruce Fields | 42ca099 | 2006-10-04 02:16:20 -0700 | [diff] [blame] | 1928 | if (exp->ex_fslocs.migrated) { |
| 1929 | WRITE64(NFS4_REFERRAL_FSID_MAJOR); |
| 1930 | WRITE64(NFS4_REFERRAL_FSID_MINOR); |
NeilBrown | af6a4e2 | 2007-02-14 00:33:12 -0800 | [diff] [blame] | 1931 | } else switch(fsid_source(fhp)) { |
| 1932 | case FSIDSOURCE_FSID: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1933 | WRITE64((u64)exp->ex_fsid); |
| 1934 | WRITE64((u64)0); |
NeilBrown | af6a4e2 | 2007-02-14 00:33:12 -0800 | [diff] [blame] | 1935 | break; |
| 1936 | case FSIDSOURCE_DEV: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1937 | WRITE32(0); |
| 1938 | WRITE32(MAJOR(stat.dev)); |
| 1939 | WRITE32(0); |
| 1940 | WRITE32(MINOR(stat.dev)); |
NeilBrown | af6a4e2 | 2007-02-14 00:33:12 -0800 | [diff] [blame] | 1941 | break; |
| 1942 | case FSIDSOURCE_UUID: |
| 1943 | WRITEMEM(exp->ex_uuid, 16); |
| 1944 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1945 | } |
| 1946 | } |
| 1947 | if (bmval0 & FATTR4_WORD0_UNIQUE_HANDLES) { |
| 1948 | if ((buflen -= 4) < 0) |
| 1949 | goto out_resource; |
| 1950 | WRITE32(0); |
| 1951 | } |
| 1952 | if (bmval0 & FATTR4_WORD0_LEASE_TIME) { |
| 1953 | if ((buflen -= 4) < 0) |
| 1954 | goto out_resource; |
J. Bruce Fields | cf07d2e | 2010-02-28 23:20:19 -0500 | [diff] [blame] | 1955 | WRITE32(nfsd4_lease); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1956 | } |
| 1957 | if (bmval0 & FATTR4_WORD0_RDATTR_ERROR) { |
| 1958 | if ((buflen -= 4) < 0) |
| 1959 | goto out_resource; |
J.Bruce Fields | 42ca099 | 2006-10-04 02:16:20 -0700 | [diff] [blame] | 1960 | WRITE32(rdattr_err); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1961 | } |
| 1962 | if (bmval0 & FATTR4_WORD0_ACL) { |
| 1963 | struct nfs4_ace *ace; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1964 | |
| 1965 | if (acl == NULL) { |
| 1966 | if ((buflen -= 4) < 0) |
| 1967 | goto out_resource; |
| 1968 | |
| 1969 | WRITE32(0); |
| 1970 | goto out_acl; |
| 1971 | } |
| 1972 | if ((buflen -= 4) < 0) |
| 1973 | goto out_resource; |
| 1974 | WRITE32(acl->naces); |
| 1975 | |
J. Bruce Fields | 28e05dd | 2007-02-16 01:28:30 -0800 | [diff] [blame] | 1976 | for (ace = acl->aces; ace < acl->aces + acl->naces; ace++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1977 | if ((buflen -= 4*3) < 0) |
| 1978 | goto out_resource; |
| 1979 | WRITE32(ace->type); |
| 1980 | WRITE32(ace->flag); |
| 1981 | WRITE32(ace->access_mask & NFS4_ACE_MASK_ALL); |
| 1982 | status = nfsd4_encode_aclname(rqstp, ace->whotype, |
| 1983 | ace->who, ace->flag & NFS4_ACE_IDENTIFIER_GROUP, |
| 1984 | &p, &buflen); |
| 1985 | if (status == nfserr_resource) |
| 1986 | goto out_resource; |
| 1987 | if (status) |
| 1988 | goto out; |
| 1989 | } |
| 1990 | } |
| 1991 | out_acl: |
| 1992 | if (bmval0 & FATTR4_WORD0_ACLSUPPORT) { |
| 1993 | if ((buflen -= 4) < 0) |
| 1994 | goto out_resource; |
| 1995 | WRITE32(aclsupport ? |
| 1996 | ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL : 0); |
| 1997 | } |
| 1998 | if (bmval0 & FATTR4_WORD0_CANSETTIME) { |
| 1999 | if ((buflen -= 4) < 0) |
| 2000 | goto out_resource; |
| 2001 | WRITE32(1); |
| 2002 | } |
| 2003 | if (bmval0 & FATTR4_WORD0_CASE_INSENSITIVE) { |
| 2004 | if ((buflen -= 4) < 0) |
| 2005 | goto out_resource; |
| 2006 | WRITE32(1); |
| 2007 | } |
| 2008 | if (bmval0 & FATTR4_WORD0_CASE_PRESERVING) { |
| 2009 | if ((buflen -= 4) < 0) |
| 2010 | goto out_resource; |
| 2011 | WRITE32(1); |
| 2012 | } |
| 2013 | if (bmval0 & FATTR4_WORD0_CHOWN_RESTRICTED) { |
| 2014 | if ((buflen -= 4) < 0) |
| 2015 | goto out_resource; |
| 2016 | WRITE32(1); |
| 2017 | } |
| 2018 | if (bmval0 & FATTR4_WORD0_FILEHANDLE) { |
| 2019 | buflen -= (XDR_QUADLEN(fhp->fh_handle.fh_size) << 2) + 4; |
| 2020 | if (buflen < 0) |
| 2021 | goto out_resource; |
| 2022 | WRITE32(fhp->fh_handle.fh_size); |
| 2023 | WRITEMEM(&fhp->fh_handle.fh_base, fhp->fh_handle.fh_size); |
| 2024 | } |
| 2025 | if (bmval0 & FATTR4_WORD0_FILEID) { |
| 2026 | if ((buflen -= 8) < 0) |
| 2027 | goto out_resource; |
Peter Staubach | 40ee5dc | 2007-08-16 12:10:07 -0400 | [diff] [blame] | 2028 | WRITE64(stat.ino); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2029 | } |
| 2030 | if (bmval0 & FATTR4_WORD0_FILES_AVAIL) { |
| 2031 | if ((buflen -= 8) < 0) |
| 2032 | goto out_resource; |
| 2033 | WRITE64((u64) statfs.f_ffree); |
| 2034 | } |
| 2035 | if (bmval0 & FATTR4_WORD0_FILES_FREE) { |
| 2036 | if ((buflen -= 8) < 0) |
| 2037 | goto out_resource; |
| 2038 | WRITE64((u64) statfs.f_ffree); |
| 2039 | } |
| 2040 | if (bmval0 & FATTR4_WORD0_FILES_TOTAL) { |
| 2041 | if ((buflen -= 8) < 0) |
| 2042 | goto out_resource; |
| 2043 | WRITE64((u64) statfs.f_files); |
| 2044 | } |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 2045 | if (bmval0 & FATTR4_WORD0_FS_LOCATIONS) { |
| 2046 | status = nfsd4_encode_fs_locations(rqstp, exp, &p, &buflen); |
| 2047 | if (status == nfserr_resource) |
| 2048 | goto out_resource; |
| 2049 | if (status) |
| 2050 | goto out; |
| 2051 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2052 | if (bmval0 & FATTR4_WORD0_HOMOGENEOUS) { |
| 2053 | if ((buflen -= 4) < 0) |
| 2054 | goto out_resource; |
| 2055 | WRITE32(1); |
| 2056 | } |
| 2057 | if (bmval0 & FATTR4_WORD0_MAXFILESIZE) { |
| 2058 | if ((buflen -= 8) < 0) |
| 2059 | goto out_resource; |
| 2060 | WRITE64(~(u64)0); |
| 2061 | } |
| 2062 | if (bmval0 & FATTR4_WORD0_MAXLINK) { |
| 2063 | if ((buflen -= 4) < 0) |
| 2064 | goto out_resource; |
| 2065 | WRITE32(255); |
| 2066 | } |
| 2067 | if (bmval0 & FATTR4_WORD0_MAXNAME) { |
| 2068 | if ((buflen -= 4) < 0) |
| 2069 | goto out_resource; |
J. Bruce Fields | a16e92e | 2007-09-28 16:45:51 -0400 | [diff] [blame] | 2070 | WRITE32(statfs.f_namelen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2071 | } |
| 2072 | if (bmval0 & FATTR4_WORD0_MAXREAD) { |
| 2073 | if ((buflen -= 8) < 0) |
| 2074 | goto out_resource; |
Greg Banks | 7adae48 | 2006-10-04 02:15:47 -0700 | [diff] [blame] | 2075 | WRITE64((u64) svc_max_payload(rqstp)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2076 | } |
| 2077 | if (bmval0 & FATTR4_WORD0_MAXWRITE) { |
| 2078 | if ((buflen -= 8) < 0) |
| 2079 | goto out_resource; |
Greg Banks | 7adae48 | 2006-10-04 02:15:47 -0700 | [diff] [blame] | 2080 | WRITE64((u64) svc_max_payload(rqstp)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2081 | } |
| 2082 | if (bmval1 & FATTR4_WORD1_MODE) { |
| 2083 | if ((buflen -= 4) < 0) |
| 2084 | goto out_resource; |
| 2085 | WRITE32(stat.mode & S_IALLUGO); |
| 2086 | } |
| 2087 | if (bmval1 & FATTR4_WORD1_NO_TRUNC) { |
| 2088 | if ((buflen -= 4) < 0) |
| 2089 | goto out_resource; |
| 2090 | WRITE32(1); |
| 2091 | } |
| 2092 | if (bmval1 & FATTR4_WORD1_NUMLINKS) { |
| 2093 | if ((buflen -= 4) < 0) |
| 2094 | goto out_resource; |
| 2095 | WRITE32(stat.nlink); |
| 2096 | } |
| 2097 | if (bmval1 & FATTR4_WORD1_OWNER) { |
| 2098 | status = nfsd4_encode_user(rqstp, stat.uid, &p, &buflen); |
| 2099 | if (status == nfserr_resource) |
| 2100 | goto out_resource; |
| 2101 | if (status) |
| 2102 | goto out; |
| 2103 | } |
| 2104 | if (bmval1 & FATTR4_WORD1_OWNER_GROUP) { |
| 2105 | status = nfsd4_encode_group(rqstp, stat.gid, &p, &buflen); |
| 2106 | if (status == nfserr_resource) |
| 2107 | goto out_resource; |
| 2108 | if (status) |
| 2109 | goto out; |
| 2110 | } |
| 2111 | if (bmval1 & FATTR4_WORD1_RAWDEV) { |
| 2112 | if ((buflen -= 8) < 0) |
| 2113 | goto out_resource; |
| 2114 | WRITE32((u32) MAJOR(stat.rdev)); |
| 2115 | WRITE32((u32) MINOR(stat.rdev)); |
| 2116 | } |
| 2117 | if (bmval1 & FATTR4_WORD1_SPACE_AVAIL) { |
| 2118 | if ((buflen -= 8) < 0) |
| 2119 | goto out_resource; |
| 2120 | dummy64 = (u64)statfs.f_bavail * (u64)statfs.f_bsize; |
| 2121 | WRITE64(dummy64); |
| 2122 | } |
| 2123 | if (bmval1 & FATTR4_WORD1_SPACE_FREE) { |
| 2124 | if ((buflen -= 8) < 0) |
| 2125 | goto out_resource; |
| 2126 | dummy64 = (u64)statfs.f_bfree * (u64)statfs.f_bsize; |
| 2127 | WRITE64(dummy64); |
| 2128 | } |
| 2129 | if (bmval1 & FATTR4_WORD1_SPACE_TOTAL) { |
| 2130 | if ((buflen -= 8) < 0) |
| 2131 | goto out_resource; |
| 2132 | dummy64 = (u64)statfs.f_blocks * (u64)statfs.f_bsize; |
| 2133 | WRITE64(dummy64); |
| 2134 | } |
| 2135 | if (bmval1 & FATTR4_WORD1_SPACE_USED) { |
| 2136 | if ((buflen -= 8) < 0) |
| 2137 | goto out_resource; |
| 2138 | dummy64 = (u64)stat.blocks << 9; |
| 2139 | WRITE64(dummy64); |
| 2140 | } |
| 2141 | if (bmval1 & FATTR4_WORD1_TIME_ACCESS) { |
| 2142 | if ((buflen -= 12) < 0) |
| 2143 | goto out_resource; |
| 2144 | WRITE32(0); |
| 2145 | WRITE32(stat.atime.tv_sec); |
| 2146 | WRITE32(stat.atime.tv_nsec); |
| 2147 | } |
| 2148 | if (bmval1 & FATTR4_WORD1_TIME_DELTA) { |
| 2149 | if ((buflen -= 12) < 0) |
| 2150 | goto out_resource; |
| 2151 | WRITE32(0); |
| 2152 | WRITE32(1); |
| 2153 | WRITE32(0); |
| 2154 | } |
| 2155 | if (bmval1 & FATTR4_WORD1_TIME_METADATA) { |
| 2156 | if ((buflen -= 12) < 0) |
| 2157 | goto out_resource; |
| 2158 | WRITE32(0); |
| 2159 | WRITE32(stat.ctime.tv_sec); |
| 2160 | WRITE32(stat.ctime.tv_nsec); |
| 2161 | } |
| 2162 | if (bmval1 & FATTR4_WORD1_TIME_MODIFY) { |
| 2163 | if ((buflen -= 12) < 0) |
| 2164 | goto out_resource; |
| 2165 | WRITE32(0); |
| 2166 | WRITE32(stat.mtime.tv_sec); |
| 2167 | WRITE32(stat.mtime.tv_nsec); |
| 2168 | } |
| 2169 | if (bmval1 & FATTR4_WORD1_MOUNTED_ON_FILEID) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2170 | if ((buflen -= 8) < 0) |
| 2171 | goto out_resource; |
Frank Filz | 406a7ea | 2007-11-27 11:34:05 -0800 | [diff] [blame] | 2172 | /* |
| 2173 | * Get parent's attributes if not ignoring crossmount |
| 2174 | * and this is the root of a cross-mounted filesystem. |
| 2175 | */ |
| 2176 | if (ignore_crossmnt == 0 && |
Al Viro | 462d605 | 2010-01-30 16:11:21 -0500 | [diff] [blame] | 2177 | dentry == exp->ex_path.mnt->mnt_root) { |
| 2178 | struct path path = exp->ex_path; |
| 2179 | path_get(&path); |
| 2180 | while (follow_up(&path)) { |
| 2181 | if (path.dentry != path.mnt->mnt_root) |
| 2182 | break; |
| 2183 | } |
| 2184 | err = vfs_getattr(path.mnt, path.dentry, &stat); |
| 2185 | path_put(&path); |
Peter Staubach | 40ee5dc | 2007-08-16 12:10:07 -0400 | [diff] [blame] | 2186 | if (err) |
| 2187 | goto out_nfserr; |
| 2188 | } |
| 2189 | WRITE64(stat.ino); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2190 | } |
Benny Halevy | 8c18f20 | 2009-04-03 08:29:14 +0300 | [diff] [blame] | 2191 | if (bmval2 & FATTR4_WORD2_SUPPATTR_EXCLCREAT) { |
| 2192 | WRITE32(3); |
| 2193 | WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD0); |
| 2194 | WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD1); |
| 2195 | WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD2); |
| 2196 | } |
Andy Adamson | 7e70570 | 2009-04-03 08:29:11 +0300 | [diff] [blame] | 2197 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2198 | *attrlenp = htonl((char *)p - (char *)attrlenp - 4); |
| 2199 | *countp = p - buffer; |
| 2200 | status = nfs_ok; |
| 2201 | |
| 2202 | out: |
J. Bruce Fields | 28e05dd | 2007-02-16 01:28:30 -0800 | [diff] [blame] | 2203 | kfree(acl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2204 | if (fhp == &tempfh) |
| 2205 | fh_put(&tempfh); |
| 2206 | return status; |
| 2207 | out_nfserr: |
Al Viro | b8dd7b9 | 2006-10-19 23:29:01 -0700 | [diff] [blame] | 2208 | status = nfserrno(err); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2209 | goto out; |
| 2210 | out_resource: |
| 2211 | *countp = 0; |
| 2212 | status = nfserr_resource; |
| 2213 | goto out; |
| 2214 | out_serverfault: |
| 2215 | status = nfserr_serverfault; |
| 2216 | goto out; |
| 2217 | } |
| 2218 | |
J. Bruce Fields | c0ce6ec | 2008-02-11 15:48:47 -0500 | [diff] [blame] | 2219 | static inline int attributes_need_mount(u32 *bmval) |
| 2220 | { |
| 2221 | if (bmval[0] & ~(FATTR4_WORD0_RDATTR_ERROR | FATTR4_WORD0_LEASE_TIME)) |
| 2222 | return 1; |
| 2223 | if (bmval[1] & ~FATTR4_WORD1_MOUNTED_ON_FILEID) |
| 2224 | return 1; |
| 2225 | return 0; |
| 2226 | } |
| 2227 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2228 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2229 | nfsd4_encode_dirent_fattr(struct nfsd4_readdir *cd, |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 2230 | const char *name, int namlen, __be32 *p, int *buflen) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2231 | { |
| 2232 | struct svc_export *exp = cd->rd_fhp->fh_export; |
| 2233 | struct dentry *dentry; |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2234 | __be32 nfserr; |
Frank Filz | 406a7ea | 2007-11-27 11:34:05 -0800 | [diff] [blame] | 2235 | int ignore_crossmnt = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2236 | |
| 2237 | dentry = lookup_one_len(name, cd->rd_fhp->fh_dentry, namlen); |
| 2238 | if (IS_ERR(dentry)) |
| 2239 | return nfserrno(PTR_ERR(dentry)); |
J. Bruce Fields | b2c0cea | 2009-05-05 19:04:29 -0400 | [diff] [blame] | 2240 | if (!dentry->d_inode) { |
| 2241 | /* |
| 2242 | * nfsd_buffered_readdir drops the i_mutex between |
| 2243 | * readdir and calling this callback, leaving a window |
| 2244 | * where this directory entry could have gone away. |
| 2245 | */ |
| 2246 | dput(dentry); |
| 2247 | return nfserr_noent; |
| 2248 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2249 | |
| 2250 | exp_get(exp); |
Frank Filz | 406a7ea | 2007-11-27 11:34:05 -0800 | [diff] [blame] | 2251 | /* |
| 2252 | * In the case of a mountpoint, the client may be asking for |
| 2253 | * attributes that are only properties of the underlying filesystem |
| 2254 | * as opposed to the cross-mounted file system. In such a case, |
| 2255 | * we will not follow the cross mount and will fill the attribtutes |
| 2256 | * directly from the mountpoint dentry. |
| 2257 | */ |
J. Bruce Fields | 3227fa4 | 2009-10-25 21:43:01 -0400 | [diff] [blame] | 2258 | if (nfsd_mountpoint(dentry, exp)) { |
J.Bruce Fields | 021d3a7 | 2006-12-13 00:35:24 -0800 | [diff] [blame] | 2259 | int err; |
| 2260 | |
J. Bruce Fields | 3227fa4 | 2009-10-25 21:43:01 -0400 | [diff] [blame] | 2261 | if (!(exp->ex_flags & NFSEXP_V4ROOT) |
| 2262 | && !attributes_need_mount(cd->rd_bmval)) { |
| 2263 | ignore_crossmnt = 1; |
| 2264 | goto out_encode; |
| 2265 | } |
Andy Adamson | dcb488a3 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 2266 | /* |
| 2267 | * Why the heck aren't we just using nfsd_lookup?? |
| 2268 | * Different "."/".." handling? Something else? |
| 2269 | * At least, add a comment here to explain.... |
| 2270 | */ |
J.Bruce Fields | 021d3a7 | 2006-12-13 00:35:24 -0800 | [diff] [blame] | 2271 | err = nfsd_cross_mnt(cd->rd_rqstp, &dentry, &exp); |
| 2272 | if (err) { |
| 2273 | nfserr = nfserrno(err); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2274 | goto out_put; |
| 2275 | } |
Andy Adamson | dcb488a3 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 2276 | nfserr = check_nfsd_access(exp, cd->rd_rqstp); |
| 2277 | if (nfserr) |
| 2278 | goto out_put; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2279 | |
| 2280 | } |
J. Bruce Fields | 3227fa4 | 2009-10-25 21:43:01 -0400 | [diff] [blame] | 2281 | out_encode: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2282 | nfserr = nfsd4_encode_fattr(NULL, exp, dentry, p, buflen, cd->rd_bmval, |
Frank Filz | 406a7ea | 2007-11-27 11:34:05 -0800 | [diff] [blame] | 2283 | cd->rd_rqstp, ignore_crossmnt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2284 | out_put: |
| 2285 | dput(dentry); |
| 2286 | exp_put(exp); |
| 2287 | return nfserr; |
| 2288 | } |
| 2289 | |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 2290 | static __be32 * |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2291 | nfsd4_encode_rdattr_error(__be32 *p, int buflen, __be32 nfserr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2292 | { |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 2293 | __be32 *attrlenp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2294 | |
| 2295 | if (buflen < 6) |
| 2296 | return NULL; |
| 2297 | *p++ = htonl(2); |
| 2298 | *p++ = htonl(FATTR4_WORD0_RDATTR_ERROR); /* bmval0 */ |
| 2299 | *p++ = htonl(0); /* bmval1 */ |
| 2300 | |
| 2301 | attrlenp = p++; |
| 2302 | *p++ = nfserr; /* no htonl */ |
| 2303 | *attrlenp = htonl((char *)p - (char *)attrlenp - 4); |
| 2304 | return p; |
| 2305 | } |
| 2306 | |
| 2307 | static int |
NeilBrown | a0ad13e | 2007-01-26 00:57:10 -0800 | [diff] [blame] | 2308 | nfsd4_encode_dirent(void *ccdv, const char *name, int namlen, |
| 2309 | loff_t offset, u64 ino, unsigned int d_type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2310 | { |
NeilBrown | a0ad13e | 2007-01-26 00:57:10 -0800 | [diff] [blame] | 2311 | struct readdir_cd *ccd = ccdv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2312 | struct nfsd4_readdir *cd = container_of(ccd, struct nfsd4_readdir, common); |
| 2313 | int buflen; |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 2314 | __be32 *p = cd->buffer; |
J. Bruce Fields | b2c0cea | 2009-05-05 19:04:29 -0400 | [diff] [blame] | 2315 | __be32 *cookiep; |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2316 | __be32 nfserr = nfserr_toosmall; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2317 | |
| 2318 | /* In nfsv4, "." and ".." never make it onto the wire.. */ |
| 2319 | if (name && isdotent(name, namlen)) { |
| 2320 | cd->common.err = nfs_ok; |
| 2321 | return 0; |
| 2322 | } |
| 2323 | |
| 2324 | if (cd->offset) |
| 2325 | xdr_encode_hyper(cd->offset, (u64) offset); |
| 2326 | |
| 2327 | buflen = cd->buflen - 4 - XDR_QUADLEN(namlen); |
| 2328 | if (buflen < 0) |
| 2329 | goto fail; |
| 2330 | |
| 2331 | *p++ = xdr_one; /* mark entry present */ |
J. Bruce Fields | b2c0cea | 2009-05-05 19:04:29 -0400 | [diff] [blame] | 2332 | cookiep = p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2333 | p = xdr_encode_hyper(p, NFS_OFFSET_MAX); /* offset of next entry */ |
| 2334 | p = xdr_encode_array(p, name, namlen); /* name length & name */ |
| 2335 | |
| 2336 | nfserr = nfsd4_encode_dirent_fattr(cd, name, namlen, p, &buflen); |
| 2337 | switch (nfserr) { |
| 2338 | case nfs_ok: |
| 2339 | p += buflen; |
| 2340 | break; |
| 2341 | case nfserr_resource: |
| 2342 | nfserr = nfserr_toosmall; |
| 2343 | goto fail; |
J. Bruce Fields | b2c0cea | 2009-05-05 19:04:29 -0400 | [diff] [blame] | 2344 | case nfserr_noent: |
| 2345 | goto skip_entry; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2346 | default: |
| 2347 | /* |
| 2348 | * If the client requested the RDATTR_ERROR attribute, |
| 2349 | * we stuff the error code into this attribute |
| 2350 | * and continue. If this attribute was not requested, |
| 2351 | * then in accordance with the spec, we fail the |
| 2352 | * entire READDIR operation(!) |
| 2353 | */ |
| 2354 | if (!(cd->rd_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)) |
| 2355 | goto fail; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2356 | p = nfsd4_encode_rdattr_error(p, buflen, nfserr); |
Fred Isaman | 34081ef | 2006-01-18 17:43:40 -0800 | [diff] [blame] | 2357 | if (p == NULL) { |
| 2358 | nfserr = nfserr_toosmall; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2359 | goto fail; |
Fred Isaman | 34081ef | 2006-01-18 17:43:40 -0800 | [diff] [blame] | 2360 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2361 | } |
| 2362 | cd->buflen -= (p - cd->buffer); |
| 2363 | cd->buffer = p; |
J. Bruce Fields | b2c0cea | 2009-05-05 19:04:29 -0400 | [diff] [blame] | 2364 | cd->offset = cookiep; |
| 2365 | skip_entry: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2366 | cd->common.err = nfs_ok; |
| 2367 | return 0; |
| 2368 | fail: |
| 2369 | cd->common.err = nfserr; |
| 2370 | return -EINVAL; |
| 2371 | } |
| 2372 | |
Benny Halevy | e2f282b | 2008-08-12 20:45:07 +0300 | [diff] [blame] | 2373 | static void |
| 2374 | nfsd4_encode_stateid(struct nfsd4_compoundres *resp, stateid_t *sid) |
| 2375 | { |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 2376 | __be32 *p; |
Benny Halevy | e2f282b | 2008-08-12 20:45:07 +0300 | [diff] [blame] | 2377 | |
| 2378 | RESERVE_SPACE(sizeof(stateid_t)); |
| 2379 | WRITE32(sid->si_generation); |
| 2380 | WRITEMEM(&sid->si_opaque, sizeof(stateid_opaque_t)); |
| 2381 | ADJUST_ARGS(); |
| 2382 | } |
| 2383 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2384 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2385 | nfsd4_encode_access(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_access *access) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2386 | { |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 2387 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2388 | |
| 2389 | if (!nfserr) { |
| 2390 | RESERVE_SPACE(8); |
| 2391 | WRITE32(access->ac_supported); |
| 2392 | WRITE32(access->ac_resp_access); |
| 2393 | ADJUST_ARGS(); |
| 2394 | } |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2395 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2396 | } |
| 2397 | |
J. Bruce Fields | 1d1bc8f | 2010-10-04 23:12:59 -0400 | [diff] [blame] | 2398 | static __be32 nfsd4_encode_bind_conn_to_session(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_bind_conn_to_session *bcts) |
| 2399 | { |
| 2400 | __be32 *p; |
| 2401 | |
| 2402 | if (!nfserr) { |
| 2403 | RESERVE_SPACE(NFS4_MAX_SESSIONID_LEN + 8); |
| 2404 | WRITEMEM(bcts->sessionid.data, NFS4_MAX_SESSIONID_LEN); |
| 2405 | WRITE32(bcts->dir); |
| 2406 | /* XXX: ? */ |
| 2407 | WRITE32(0); |
| 2408 | ADJUST_ARGS(); |
| 2409 | } |
| 2410 | return nfserr; |
| 2411 | } |
| 2412 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2413 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2414 | nfsd4_encode_close(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_close *close) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2415 | { |
| 2416 | ENCODE_SEQID_OP_HEAD; |
| 2417 | |
Benny Halevy | e2f282b | 2008-08-12 20:45:07 +0300 | [diff] [blame] | 2418 | if (!nfserr) |
| 2419 | nfsd4_encode_stateid(resp, &close->cl_stateid); |
| 2420 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2421 | ENCODE_SEQID_OP_TAIL(close->cl_stateowner); |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2422 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2423 | } |
| 2424 | |
| 2425 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2426 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2427 | nfsd4_encode_commit(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_commit *commit) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2428 | { |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 2429 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2430 | |
| 2431 | if (!nfserr) { |
| 2432 | RESERVE_SPACE(8); |
| 2433 | WRITEMEM(commit->co_verf.data, 8); |
| 2434 | ADJUST_ARGS(); |
| 2435 | } |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2436 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2437 | } |
| 2438 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2439 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2440 | nfsd4_encode_create(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_create *create) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2441 | { |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 2442 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2443 | |
| 2444 | if (!nfserr) { |
| 2445 | RESERVE_SPACE(32); |
J. Bruce Fields | c654b8a | 2009-04-16 17:33:25 -0400 | [diff] [blame] | 2446 | write_cinfo(&p, &create->cr_cinfo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2447 | WRITE32(2); |
| 2448 | WRITE32(create->cr_bmval[0]); |
| 2449 | WRITE32(create->cr_bmval[1]); |
| 2450 | ADJUST_ARGS(); |
| 2451 | } |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2452 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2453 | } |
| 2454 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2455 | static __be32 |
| 2456 | nfsd4_encode_getattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_getattr *getattr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2457 | { |
| 2458 | struct svc_fh *fhp = getattr->ga_fhp; |
| 2459 | int buflen; |
| 2460 | |
| 2461 | if (nfserr) |
| 2462 | return nfserr; |
| 2463 | |
| 2464 | buflen = resp->end - resp->p - (COMPOUND_ERR_SLACK_SPACE >> 2); |
| 2465 | nfserr = nfsd4_encode_fattr(fhp, fhp->fh_export, fhp->fh_dentry, |
| 2466 | resp->p, &buflen, getattr->ga_bmval, |
Frank Filz | 406a7ea | 2007-11-27 11:34:05 -0800 | [diff] [blame] | 2467 | resp->rqstp, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2468 | if (!nfserr) |
| 2469 | resp->p += buflen; |
| 2470 | return nfserr; |
| 2471 | } |
| 2472 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2473 | static __be32 |
| 2474 | nfsd4_encode_getfh(struct nfsd4_compoundres *resp, __be32 nfserr, struct svc_fh **fhpp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2475 | { |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2476 | struct svc_fh *fhp = *fhpp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2477 | unsigned int len; |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 2478 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2479 | |
| 2480 | if (!nfserr) { |
| 2481 | len = fhp->fh_handle.fh_size; |
| 2482 | RESERVE_SPACE(len + 4); |
| 2483 | WRITE32(len); |
| 2484 | WRITEMEM(&fhp->fh_handle.fh_base, len); |
| 2485 | ADJUST_ARGS(); |
| 2486 | } |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2487 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2488 | } |
| 2489 | |
| 2490 | /* |
| 2491 | * Including all fields other than the name, a LOCK4denied structure requires |
| 2492 | * 8(clientid) + 4(namelen) + 8(offset) + 8(length) + 4(type) = 32 bytes. |
| 2493 | */ |
| 2494 | static void |
| 2495 | nfsd4_encode_lock_denied(struct nfsd4_compoundres *resp, struct nfsd4_lock_denied *ld) |
| 2496 | { |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 2497 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2498 | |
| 2499 | RESERVE_SPACE(32 + XDR_LEN(ld->ld_sop ? ld->ld_sop->so_owner.len : 0)); |
| 2500 | WRITE64(ld->ld_start); |
| 2501 | WRITE64(ld->ld_length); |
| 2502 | WRITE32(ld->ld_type); |
| 2503 | if (ld->ld_sop) { |
| 2504 | WRITEMEM(&ld->ld_clientid, 8); |
| 2505 | WRITE32(ld->ld_sop->so_owner.len); |
| 2506 | WRITEMEM(ld->ld_sop->so_owner.data, ld->ld_sop->so_owner.len); |
| 2507 | kref_put(&ld->ld_sop->so_ref, nfs4_free_stateowner); |
| 2508 | } else { /* non - nfsv4 lock in conflict, no clientid nor owner */ |
| 2509 | WRITE64((u64)0); /* clientid */ |
| 2510 | WRITE32(0); /* length of owner name */ |
| 2511 | } |
| 2512 | ADJUST_ARGS(); |
| 2513 | } |
| 2514 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2515 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2516 | nfsd4_encode_lock(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lock *lock) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2517 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2518 | ENCODE_SEQID_OP_HEAD; |
| 2519 | |
Benny Halevy | e2f282b | 2008-08-12 20:45:07 +0300 | [diff] [blame] | 2520 | if (!nfserr) |
| 2521 | nfsd4_encode_stateid(resp, &lock->lk_resp_stateid); |
| 2522 | else if (nfserr == nfserr_denied) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2523 | nfsd4_encode_lock_denied(resp, &lock->lk_denied); |
| 2524 | |
J. Bruce Fields | 3a65588 | 2006-01-18 17:43:19 -0800 | [diff] [blame] | 2525 | ENCODE_SEQID_OP_TAIL(lock->lk_replay_owner); |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2526 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2527 | } |
| 2528 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2529 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2530 | nfsd4_encode_lockt(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_lockt *lockt) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2531 | { |
| 2532 | if (nfserr == nfserr_denied) |
| 2533 | nfsd4_encode_lock_denied(resp, &lockt->lt_denied); |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2534 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2535 | } |
| 2536 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2537 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2538 | nfsd4_encode_locku(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_locku *locku) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2539 | { |
| 2540 | ENCODE_SEQID_OP_HEAD; |
| 2541 | |
Benny Halevy | e2f282b | 2008-08-12 20:45:07 +0300 | [diff] [blame] | 2542 | if (!nfserr) |
| 2543 | nfsd4_encode_stateid(resp, &locku->lu_stateid); |
| 2544 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2545 | ENCODE_SEQID_OP_TAIL(locku->lu_stateowner); |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2546 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2547 | } |
| 2548 | |
| 2549 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2550 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2551 | nfsd4_encode_link(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_link *link) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2552 | { |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 2553 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2554 | |
| 2555 | if (!nfserr) { |
| 2556 | RESERVE_SPACE(20); |
J. Bruce Fields | c654b8a | 2009-04-16 17:33:25 -0400 | [diff] [blame] | 2557 | write_cinfo(&p, &link->li_cinfo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2558 | ADJUST_ARGS(); |
| 2559 | } |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2560 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2561 | } |
| 2562 | |
| 2563 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2564 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2565 | nfsd4_encode_open(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open *open) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2566 | { |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 2567 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2568 | ENCODE_SEQID_OP_HEAD; |
| 2569 | |
| 2570 | if (nfserr) |
| 2571 | goto out; |
| 2572 | |
Benny Halevy | e2f282b | 2008-08-12 20:45:07 +0300 | [diff] [blame] | 2573 | nfsd4_encode_stateid(resp, &open->op_stateid); |
| 2574 | RESERVE_SPACE(40); |
J. Bruce Fields | c654b8a | 2009-04-16 17:33:25 -0400 | [diff] [blame] | 2575 | write_cinfo(&p, &open->op_cinfo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2576 | WRITE32(open->op_rflags); |
| 2577 | WRITE32(2); |
| 2578 | WRITE32(open->op_bmval[0]); |
| 2579 | WRITE32(open->op_bmval[1]); |
| 2580 | WRITE32(open->op_delegate_type); |
| 2581 | ADJUST_ARGS(); |
| 2582 | |
| 2583 | switch (open->op_delegate_type) { |
| 2584 | case NFS4_OPEN_DELEGATE_NONE: |
| 2585 | break; |
| 2586 | case NFS4_OPEN_DELEGATE_READ: |
Benny Halevy | e2f282b | 2008-08-12 20:45:07 +0300 | [diff] [blame] | 2587 | nfsd4_encode_stateid(resp, &open->op_delegate_stateid); |
| 2588 | RESERVE_SPACE(20); |
NeilBrown | 7b190fe | 2005-06-23 22:03:23 -0700 | [diff] [blame] | 2589 | WRITE32(open->op_recall); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2590 | |
| 2591 | /* |
| 2592 | * TODO: ACE's in delegations |
| 2593 | */ |
| 2594 | WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); |
| 2595 | WRITE32(0); |
| 2596 | WRITE32(0); |
| 2597 | WRITE32(0); /* XXX: is NULL principal ok? */ |
| 2598 | ADJUST_ARGS(); |
| 2599 | break; |
| 2600 | case NFS4_OPEN_DELEGATE_WRITE: |
Benny Halevy | e2f282b | 2008-08-12 20:45:07 +0300 | [diff] [blame] | 2601 | nfsd4_encode_stateid(resp, &open->op_delegate_stateid); |
| 2602 | RESERVE_SPACE(32); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2603 | WRITE32(0); |
| 2604 | |
| 2605 | /* |
| 2606 | * TODO: space_limit's in delegations |
| 2607 | */ |
| 2608 | WRITE32(NFS4_LIMIT_SIZE); |
| 2609 | WRITE32(~(u32)0); |
| 2610 | WRITE32(~(u32)0); |
| 2611 | |
| 2612 | /* |
| 2613 | * TODO: ACE's in delegations |
| 2614 | */ |
| 2615 | WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); |
| 2616 | WRITE32(0); |
| 2617 | WRITE32(0); |
| 2618 | WRITE32(0); /* XXX: is NULL principal ok? */ |
| 2619 | ADJUST_ARGS(); |
| 2620 | break; |
| 2621 | default: |
| 2622 | BUG(); |
| 2623 | } |
| 2624 | /* XXX save filehandle here */ |
| 2625 | out: |
| 2626 | ENCODE_SEQID_OP_TAIL(open->op_stateowner); |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2627 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2628 | } |
| 2629 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2630 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2631 | nfsd4_encode_open_confirm(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_confirm *oc) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2632 | { |
| 2633 | ENCODE_SEQID_OP_HEAD; |
Benny Halevy | e2f282b | 2008-08-12 20:45:07 +0300 | [diff] [blame] | 2634 | |
| 2635 | if (!nfserr) |
| 2636 | nfsd4_encode_stateid(resp, &oc->oc_resp_stateid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2637 | |
| 2638 | ENCODE_SEQID_OP_TAIL(oc->oc_stateowner); |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2639 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2640 | } |
| 2641 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2642 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2643 | nfsd4_encode_open_downgrade(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_open_downgrade *od) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2644 | { |
| 2645 | ENCODE_SEQID_OP_HEAD; |
Benny Halevy | e2f282b | 2008-08-12 20:45:07 +0300 | [diff] [blame] | 2646 | |
| 2647 | if (!nfserr) |
| 2648 | nfsd4_encode_stateid(resp, &od->od_stateid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2649 | |
| 2650 | ENCODE_SEQID_OP_TAIL(od->od_stateowner); |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2651 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2652 | } |
| 2653 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2654 | static __be32 |
| 2655 | nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr, |
NeilBrown | 4452435 | 2006-10-04 02:15:46 -0700 | [diff] [blame] | 2656 | struct nfsd4_read *read) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2657 | { |
| 2658 | u32 eof; |
| 2659 | int v, pn; |
| 2660 | unsigned long maxcount; |
| 2661 | long len; |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 2662 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2663 | |
| 2664 | if (nfserr) |
| 2665 | return nfserr; |
| 2666 | if (resp->xbuf->page_len) |
| 2667 | return nfserr_resource; |
| 2668 | |
| 2669 | RESERVE_SPACE(8); /* eof flag and byte count */ |
| 2670 | |
Greg Banks | 7adae48 | 2006-10-04 02:15:47 -0700 | [diff] [blame] | 2671 | maxcount = svc_max_payload(resp->rqstp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2672 | if (maxcount > read->rd_length) |
| 2673 | maxcount = read->rd_length; |
| 2674 | |
| 2675 | len = maxcount; |
| 2676 | v = 0; |
| 2677 | while (len > 0) { |
NeilBrown | 4452435 | 2006-10-04 02:15:46 -0700 | [diff] [blame] | 2678 | pn = resp->rqstp->rq_resused++; |
NeilBrown | 3cc03b1 | 2006-10-04 02:15:47 -0700 | [diff] [blame] | 2679 | resp->rqstp->rq_vec[v].iov_base = |
NeilBrown | 4452435 | 2006-10-04 02:15:46 -0700 | [diff] [blame] | 2680 | page_address(resp->rqstp->rq_respages[pn]); |
NeilBrown | 3cc03b1 | 2006-10-04 02:15:47 -0700 | [diff] [blame] | 2681 | resp->rqstp->rq_vec[v].iov_len = |
NeilBrown | 4452435 | 2006-10-04 02:15:46 -0700 | [diff] [blame] | 2682 | len < PAGE_SIZE ? len : PAGE_SIZE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2683 | v++; |
| 2684 | len -= PAGE_SIZE; |
| 2685 | } |
| 2686 | read->rd_vlen = v; |
| 2687 | |
J. Bruce Fields | 039a87c | 2010-07-30 11:33:32 -0400 | [diff] [blame] | 2688 | nfserr = nfsd_read_file(read->rd_rqstp, read->rd_fhp, read->rd_filp, |
NeilBrown | 3cc03b1 | 2006-10-04 02:15:47 -0700 | [diff] [blame] | 2689 | read->rd_offset, resp->rqstp->rq_vec, read->rd_vlen, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2690 | &maxcount); |
| 2691 | |
| 2692 | if (nfserr == nfserr_symlink) |
| 2693 | nfserr = nfserr_inval; |
| 2694 | if (nfserr) |
| 2695 | return nfserr; |
NeilBrown | 4452435 | 2006-10-04 02:15:46 -0700 | [diff] [blame] | 2696 | eof = (read->rd_offset + maxcount >= |
| 2697 | read->rd_fhp->fh_dentry->d_inode->i_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2698 | |
| 2699 | WRITE32(eof); |
| 2700 | WRITE32(maxcount); |
| 2701 | ADJUST_ARGS(); |
NeilBrown | 6ed6dec | 2006-04-10 22:55:32 -0700 | [diff] [blame] | 2702 | resp->xbuf->head[0].iov_len = (char*)p |
| 2703 | - (char*)resp->xbuf->head[0].iov_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2704 | resp->xbuf->page_len = maxcount; |
| 2705 | |
NeilBrown | 6ed6dec | 2006-04-10 22:55:32 -0700 | [diff] [blame] | 2706 | /* Use rest of head for padding and remaining ops: */ |
NeilBrown | 6ed6dec | 2006-04-10 22:55:32 -0700 | [diff] [blame] | 2707 | resp->xbuf->tail[0].iov_base = p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2708 | resp->xbuf->tail[0].iov_len = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2709 | if (maxcount&3) { |
NeilBrown | 6ed6dec | 2006-04-10 22:55:32 -0700 | [diff] [blame] | 2710 | RESERVE_SPACE(4); |
| 2711 | WRITE32(0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2712 | resp->xbuf->tail[0].iov_base += maxcount&3; |
| 2713 | resp->xbuf->tail[0].iov_len = 4 - (maxcount&3); |
NeilBrown | 6ed6dec | 2006-04-10 22:55:32 -0700 | [diff] [blame] | 2714 | ADJUST_ARGS(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2715 | } |
| 2716 | return 0; |
| 2717 | } |
| 2718 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2719 | static __be32 |
| 2720 | nfsd4_encode_readlink(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readlink *readlink) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2721 | { |
| 2722 | int maxcount; |
| 2723 | char *page; |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 2724 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2725 | |
| 2726 | if (nfserr) |
| 2727 | return nfserr; |
| 2728 | if (resp->xbuf->page_len) |
| 2729 | return nfserr_resource; |
| 2730 | |
NeilBrown | 4452435 | 2006-10-04 02:15:46 -0700 | [diff] [blame] | 2731 | page = page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused++]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2732 | |
| 2733 | maxcount = PAGE_SIZE; |
| 2734 | RESERVE_SPACE(4); |
| 2735 | |
| 2736 | /* |
| 2737 | * XXX: By default, the ->readlink() VFS op will truncate symlinks |
| 2738 | * if they would overflow the buffer. Is this kosher in NFSv4? If |
| 2739 | * not, one easy fix is: if ->readlink() precisely fills the buffer, |
| 2740 | * assume that truncation occurred, and return NFS4ERR_RESOURCE. |
| 2741 | */ |
| 2742 | nfserr = nfsd_readlink(readlink->rl_rqstp, readlink->rl_fhp, page, &maxcount); |
| 2743 | if (nfserr == nfserr_isdir) |
| 2744 | return nfserr_inval; |
| 2745 | if (nfserr) |
| 2746 | return nfserr; |
| 2747 | |
| 2748 | WRITE32(maxcount); |
| 2749 | ADJUST_ARGS(); |
NeilBrown | 6ed6dec | 2006-04-10 22:55:32 -0700 | [diff] [blame] | 2750 | resp->xbuf->head[0].iov_len = (char*)p |
| 2751 | - (char*)resp->xbuf->head[0].iov_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2752 | resp->xbuf->page_len = maxcount; |
NeilBrown | 6ed6dec | 2006-04-10 22:55:32 -0700 | [diff] [blame] | 2753 | |
| 2754 | /* Use rest of head for padding and remaining ops: */ |
NeilBrown | 6ed6dec | 2006-04-10 22:55:32 -0700 | [diff] [blame] | 2755 | resp->xbuf->tail[0].iov_base = p; |
| 2756 | resp->xbuf->tail[0].iov_len = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2757 | if (maxcount&3) { |
NeilBrown | 6ed6dec | 2006-04-10 22:55:32 -0700 | [diff] [blame] | 2758 | RESERVE_SPACE(4); |
| 2759 | WRITE32(0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2760 | resp->xbuf->tail[0].iov_base += maxcount&3; |
| 2761 | resp->xbuf->tail[0].iov_len = 4 - (maxcount&3); |
NeilBrown | 6ed6dec | 2006-04-10 22:55:32 -0700 | [diff] [blame] | 2762 | ADJUST_ARGS(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2763 | } |
| 2764 | return 0; |
| 2765 | } |
| 2766 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2767 | static __be32 |
| 2768 | nfsd4_encode_readdir(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_readdir *readdir) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2769 | { |
| 2770 | int maxcount; |
| 2771 | loff_t offset; |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 2772 | __be32 *page, *savep, *tailbase; |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 2773 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2774 | |
| 2775 | if (nfserr) |
| 2776 | return nfserr; |
| 2777 | if (resp->xbuf->page_len) |
| 2778 | return nfserr_resource; |
| 2779 | |
| 2780 | RESERVE_SPACE(8); /* verifier */ |
| 2781 | savep = p; |
| 2782 | |
| 2783 | /* XXX: Following NFSv3, we ignore the READDIR verifier for now. */ |
| 2784 | WRITE32(0); |
| 2785 | WRITE32(0); |
| 2786 | ADJUST_ARGS(); |
| 2787 | resp->xbuf->head[0].iov_len = ((char*)resp->p) - (char*)resp->xbuf->head[0].iov_base; |
NeilBrown | bb6e8a9 | 2006-04-10 22:55:33 -0700 | [diff] [blame] | 2788 | tailbase = p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2789 | |
| 2790 | maxcount = PAGE_SIZE; |
| 2791 | if (maxcount > readdir->rd_maxcount) |
| 2792 | maxcount = readdir->rd_maxcount; |
| 2793 | |
| 2794 | /* |
| 2795 | * Convert from bytes to words, account for the two words already |
| 2796 | * written, make sure to leave two words at the end for the next |
| 2797 | * pointer and eof field. |
| 2798 | */ |
| 2799 | maxcount = (maxcount >> 2) - 4; |
| 2800 | if (maxcount < 0) { |
| 2801 | nfserr = nfserr_toosmall; |
| 2802 | goto err_no_verf; |
| 2803 | } |
| 2804 | |
NeilBrown | 4452435 | 2006-10-04 02:15:46 -0700 | [diff] [blame] | 2805 | page = page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused++]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2806 | readdir->common.err = 0; |
| 2807 | readdir->buflen = maxcount; |
| 2808 | readdir->buffer = page; |
| 2809 | readdir->offset = NULL; |
| 2810 | |
| 2811 | offset = readdir->rd_cookie; |
| 2812 | nfserr = nfsd_readdir(readdir->rd_rqstp, readdir->rd_fhp, |
| 2813 | &offset, |
| 2814 | &readdir->common, nfsd4_encode_dirent); |
| 2815 | if (nfserr == nfs_ok && |
| 2816 | readdir->common.err == nfserr_toosmall && |
| 2817 | readdir->buffer == page) |
| 2818 | nfserr = nfserr_toosmall; |
| 2819 | if (nfserr == nfserr_symlink) |
| 2820 | nfserr = nfserr_notdir; |
| 2821 | if (nfserr) |
| 2822 | goto err_no_verf; |
| 2823 | |
| 2824 | if (readdir->offset) |
| 2825 | xdr_encode_hyper(readdir->offset, offset); |
| 2826 | |
| 2827 | p = readdir->buffer; |
| 2828 | *p++ = 0; /* no more entries */ |
| 2829 | *p++ = htonl(readdir->common.err == nfserr_eof); |
NeilBrown | 4452435 | 2006-10-04 02:15:46 -0700 | [diff] [blame] | 2830 | resp->xbuf->page_len = ((char*)p) - (char*)page_address( |
| 2831 | resp->rqstp->rq_respages[resp->rqstp->rq_resused-1]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2832 | |
NeilBrown | bb6e8a9 | 2006-04-10 22:55:33 -0700 | [diff] [blame] | 2833 | /* Use rest of head for padding and remaining ops: */ |
NeilBrown | bb6e8a9 | 2006-04-10 22:55:33 -0700 | [diff] [blame] | 2834 | resp->xbuf->tail[0].iov_base = tailbase; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2835 | resp->xbuf->tail[0].iov_len = 0; |
| 2836 | resp->p = resp->xbuf->tail[0].iov_base; |
NeilBrown | bb6e8a9 | 2006-04-10 22:55:33 -0700 | [diff] [blame] | 2837 | resp->end = resp->p + (PAGE_SIZE - resp->xbuf->head[0].iov_len)/4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2838 | |
| 2839 | return 0; |
| 2840 | err_no_verf: |
| 2841 | p = savep; |
| 2842 | ADJUST_ARGS(); |
| 2843 | return nfserr; |
| 2844 | } |
| 2845 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2846 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2847 | nfsd4_encode_remove(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_remove *remove) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2848 | { |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 2849 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2850 | |
| 2851 | if (!nfserr) { |
| 2852 | RESERVE_SPACE(20); |
J. Bruce Fields | c654b8a | 2009-04-16 17:33:25 -0400 | [diff] [blame] | 2853 | write_cinfo(&p, &remove->rm_cinfo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2854 | ADJUST_ARGS(); |
| 2855 | } |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2856 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2857 | } |
| 2858 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2859 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2860 | nfsd4_encode_rename(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_rename *rename) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2861 | { |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 2862 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2863 | |
| 2864 | if (!nfserr) { |
| 2865 | RESERVE_SPACE(40); |
J. Bruce Fields | c654b8a | 2009-04-16 17:33:25 -0400 | [diff] [blame] | 2866 | write_cinfo(&p, &rename->rn_sinfo); |
| 2867 | write_cinfo(&p, &rename->rn_tinfo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2868 | ADJUST_ARGS(); |
| 2869 | } |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2870 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2871 | } |
| 2872 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2873 | static __be32 |
Mi Jinlong | 22b6dee | 2010-12-27 14:29:57 +0800 | [diff] [blame] | 2874 | nfsd4_do_encode_secinfo(struct nfsd4_compoundres *resp, |
| 2875 | __be32 nfserr,struct svc_export *exp) |
Andy Adamson | dcb488a3 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 2876 | { |
| 2877 | int i = 0; |
J. Bruce Fields | 4796f45 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 2878 | u32 nflavs; |
| 2879 | struct exp_flavor_info *flavs; |
| 2880 | struct exp_flavor_info def_flavs[2]; |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 2881 | __be32 *p; |
Andy Adamson | dcb488a3 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 2882 | |
| 2883 | if (nfserr) |
| 2884 | goto out; |
J. Bruce Fields | 4796f45 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 2885 | if (exp->ex_nflavors) { |
| 2886 | flavs = exp->ex_flavors; |
| 2887 | nflavs = exp->ex_nflavors; |
| 2888 | } else { /* Handling of some defaults in absence of real secinfo: */ |
| 2889 | flavs = def_flavs; |
| 2890 | if (exp->ex_client->flavour->flavour == RPC_AUTH_UNIX) { |
| 2891 | nflavs = 2; |
| 2892 | flavs[0].pseudoflavor = RPC_AUTH_UNIX; |
| 2893 | flavs[1].pseudoflavor = RPC_AUTH_NULL; |
| 2894 | } else if (exp->ex_client->flavour->flavour == RPC_AUTH_GSS) { |
| 2895 | nflavs = 1; |
| 2896 | flavs[0].pseudoflavor |
| 2897 | = svcauth_gss_flavor(exp->ex_client); |
| 2898 | } else { |
| 2899 | nflavs = 1; |
| 2900 | flavs[0].pseudoflavor |
| 2901 | = exp->ex_client->flavour->flavour; |
| 2902 | } |
| 2903 | } |
| 2904 | |
Andy Adamson | dcb488a3 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 2905 | RESERVE_SPACE(4); |
J. Bruce Fields | 4796f45 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 2906 | WRITE32(nflavs); |
Andy Adamson | dcb488a3 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 2907 | ADJUST_ARGS(); |
J. Bruce Fields | 4796f45 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 2908 | for (i = 0; i < nflavs; i++) { |
| 2909 | u32 flav = flavs[i].pseudoflavor; |
Andy Adamson | dcb488a3 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 2910 | struct gss_api_mech *gm = gss_mech_get_by_pseudoflavor(flav); |
| 2911 | |
| 2912 | if (gm) { |
| 2913 | RESERVE_SPACE(4); |
| 2914 | WRITE32(RPC_AUTH_GSS); |
| 2915 | ADJUST_ARGS(); |
| 2916 | RESERVE_SPACE(4 + gm->gm_oid.len); |
| 2917 | WRITE32(gm->gm_oid.len); |
| 2918 | WRITEMEM(gm->gm_oid.data, gm->gm_oid.len); |
| 2919 | ADJUST_ARGS(); |
| 2920 | RESERVE_SPACE(4); |
| 2921 | WRITE32(0); /* qop */ |
| 2922 | ADJUST_ARGS(); |
| 2923 | RESERVE_SPACE(4); |
| 2924 | WRITE32(gss_pseudoflavor_to_service(gm, flav)); |
| 2925 | ADJUST_ARGS(); |
| 2926 | gss_mech_put(gm); |
| 2927 | } else { |
| 2928 | RESERVE_SPACE(4); |
| 2929 | WRITE32(flav); |
| 2930 | ADJUST_ARGS(); |
| 2931 | } |
| 2932 | } |
| 2933 | out: |
| 2934 | if (exp) |
| 2935 | exp_put(exp); |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2936 | return nfserr; |
Andy Adamson | dcb488a3 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 2937 | } |
| 2938 | |
Mi Jinlong | 22b6dee | 2010-12-27 14:29:57 +0800 | [diff] [blame] | 2939 | static __be32 |
| 2940 | nfsd4_encode_secinfo(struct nfsd4_compoundres *resp, __be32 nfserr, |
| 2941 | struct nfsd4_secinfo *secinfo) |
| 2942 | { |
| 2943 | return nfsd4_do_encode_secinfo(resp, nfserr, secinfo->si_exp); |
| 2944 | } |
| 2945 | |
| 2946 | static __be32 |
| 2947 | nfsd4_encode_secinfo_no_name(struct nfsd4_compoundres *resp, __be32 nfserr, |
| 2948 | struct nfsd4_secinfo_no_name *secinfo) |
| 2949 | { |
| 2950 | return nfsd4_do_encode_secinfo(resp, nfserr, secinfo->sin_exp); |
| 2951 | } |
| 2952 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2953 | /* |
| 2954 | * The SETATTR encode routine is special -- it always encodes a bitmap, |
| 2955 | * regardless of the error status. |
| 2956 | */ |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2957 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2958 | nfsd4_encode_setattr(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setattr *setattr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2959 | { |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 2960 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2961 | |
| 2962 | RESERVE_SPACE(12); |
| 2963 | if (nfserr) { |
| 2964 | WRITE32(2); |
| 2965 | WRITE32(0); |
| 2966 | WRITE32(0); |
| 2967 | } |
| 2968 | else { |
| 2969 | WRITE32(2); |
| 2970 | WRITE32(setattr->sa_bmval[0]); |
| 2971 | WRITE32(setattr->sa_bmval[1]); |
| 2972 | } |
| 2973 | ADJUST_ARGS(); |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2974 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2975 | } |
| 2976 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2977 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2978 | nfsd4_encode_setclientid(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_setclientid *scd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2979 | { |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 2980 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2981 | |
| 2982 | if (!nfserr) { |
| 2983 | RESERVE_SPACE(8 + sizeof(nfs4_verifier)); |
| 2984 | WRITEMEM(&scd->se_clientid, 8); |
| 2985 | WRITEMEM(&scd->se_confirm, sizeof(nfs4_verifier)); |
| 2986 | ADJUST_ARGS(); |
| 2987 | } |
| 2988 | else if (nfserr == nfserr_clid_inuse) { |
| 2989 | RESERVE_SPACE(8); |
| 2990 | WRITE32(0); |
| 2991 | WRITE32(0); |
| 2992 | ADJUST_ARGS(); |
| 2993 | } |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2994 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2995 | } |
| 2996 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2997 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2998 | nfsd4_encode_write(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_write *write) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2999 | { |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 3000 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3001 | |
| 3002 | if (!nfserr) { |
| 3003 | RESERVE_SPACE(16); |
| 3004 | WRITE32(write->wr_bytes_written); |
| 3005 | WRITE32(write->wr_how_written); |
| 3006 | WRITEMEM(write->wr_verifier.data, 8); |
| 3007 | ADJUST_ARGS(); |
| 3008 | } |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 3009 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3010 | } |
| 3011 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 3012 | static __be32 |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 3013 | nfsd4_encode_exchange_id(struct nfsd4_compoundres *resp, int nfserr, |
| 3014 | struct nfsd4_exchange_id *exid) |
| 3015 | { |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 3016 | __be32 *p; |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 3017 | char *major_id; |
| 3018 | char *server_scope; |
| 3019 | int major_id_sz; |
| 3020 | int server_scope_sz; |
| 3021 | uint64_t minor_id = 0; |
| 3022 | |
| 3023 | if (nfserr) |
| 3024 | return nfserr; |
| 3025 | |
| 3026 | major_id = utsname()->nodename; |
| 3027 | major_id_sz = strlen(major_id); |
| 3028 | server_scope = utsname()->nodename; |
| 3029 | server_scope_sz = strlen(server_scope); |
| 3030 | |
| 3031 | RESERVE_SPACE( |
| 3032 | 8 /* eir_clientid */ + |
| 3033 | 4 /* eir_sequenceid */ + |
| 3034 | 4 /* eir_flags */ + |
| 3035 | 4 /* spr_how (SP4_NONE) */ + |
| 3036 | 8 /* so_minor_id */ + |
| 3037 | 4 /* so_major_id.len */ + |
| 3038 | (XDR_QUADLEN(major_id_sz) * 4) + |
| 3039 | 4 /* eir_server_scope.len */ + |
| 3040 | (XDR_QUADLEN(server_scope_sz) * 4) + |
| 3041 | 4 /* eir_server_impl_id.count (0) */); |
| 3042 | |
| 3043 | WRITEMEM(&exid->clientid, 8); |
| 3044 | WRITE32(exid->seqid); |
| 3045 | WRITE32(exid->flags); |
| 3046 | |
| 3047 | /* state_protect4_r. Currently only support SP4_NONE */ |
| 3048 | BUG_ON(exid->spa_how != SP4_NONE); |
| 3049 | WRITE32(exid->spa_how); |
| 3050 | |
| 3051 | /* The server_owner struct */ |
| 3052 | WRITE64(minor_id); /* Minor id */ |
| 3053 | /* major id */ |
| 3054 | WRITE32(major_id_sz); |
| 3055 | WRITEMEM(major_id, major_id_sz); |
| 3056 | |
| 3057 | /* Server scope */ |
| 3058 | WRITE32(server_scope_sz); |
| 3059 | WRITEMEM(server_scope, server_scope_sz); |
| 3060 | |
| 3061 | /* Implementation id */ |
| 3062 | WRITE32(0); /* zero length nfs_impl_id4 array */ |
| 3063 | ADJUST_ARGS(); |
| 3064 | return 0; |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 3065 | } |
| 3066 | |
| 3067 | static __be32 |
| 3068 | nfsd4_encode_create_session(struct nfsd4_compoundres *resp, int nfserr, |
| 3069 | struct nfsd4_create_session *sess) |
| 3070 | { |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 3071 | __be32 *p; |
Andy Adamson | ec6b5d7 | 2009-04-03 08:28:28 +0300 | [diff] [blame] | 3072 | |
| 3073 | if (nfserr) |
| 3074 | return nfserr; |
| 3075 | |
| 3076 | RESERVE_SPACE(24); |
| 3077 | WRITEMEM(sess->sessionid.data, NFS4_MAX_SESSIONID_LEN); |
| 3078 | WRITE32(sess->seqid); |
| 3079 | WRITE32(sess->flags); |
| 3080 | ADJUST_ARGS(); |
| 3081 | |
| 3082 | RESERVE_SPACE(28); |
| 3083 | WRITE32(0); /* headerpadsz */ |
| 3084 | WRITE32(sess->fore_channel.maxreq_sz); |
| 3085 | WRITE32(sess->fore_channel.maxresp_sz); |
| 3086 | WRITE32(sess->fore_channel.maxresp_cached); |
| 3087 | WRITE32(sess->fore_channel.maxops); |
| 3088 | WRITE32(sess->fore_channel.maxreqs); |
| 3089 | WRITE32(sess->fore_channel.nr_rdma_attrs); |
| 3090 | ADJUST_ARGS(); |
| 3091 | |
| 3092 | if (sess->fore_channel.nr_rdma_attrs) { |
| 3093 | RESERVE_SPACE(4); |
| 3094 | WRITE32(sess->fore_channel.rdma_attrs); |
| 3095 | ADJUST_ARGS(); |
| 3096 | } |
| 3097 | |
| 3098 | RESERVE_SPACE(28); |
| 3099 | WRITE32(0); /* headerpadsz */ |
| 3100 | WRITE32(sess->back_channel.maxreq_sz); |
| 3101 | WRITE32(sess->back_channel.maxresp_sz); |
| 3102 | WRITE32(sess->back_channel.maxresp_cached); |
| 3103 | WRITE32(sess->back_channel.maxops); |
| 3104 | WRITE32(sess->back_channel.maxreqs); |
| 3105 | WRITE32(sess->back_channel.nr_rdma_attrs); |
| 3106 | ADJUST_ARGS(); |
| 3107 | |
| 3108 | if (sess->back_channel.nr_rdma_attrs) { |
| 3109 | RESERVE_SPACE(4); |
| 3110 | WRITE32(sess->back_channel.rdma_attrs); |
| 3111 | ADJUST_ARGS(); |
| 3112 | } |
| 3113 | return 0; |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 3114 | } |
| 3115 | |
| 3116 | static __be32 |
| 3117 | nfsd4_encode_destroy_session(struct nfsd4_compoundres *resp, int nfserr, |
| 3118 | struct nfsd4_destroy_session *destroy_session) |
| 3119 | { |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 3120 | return nfserr; |
| 3121 | } |
| 3122 | |
Andy Adamson | bf864a3 | 2009-04-03 08:28:35 +0300 | [diff] [blame] | 3123 | __be32 |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 3124 | nfsd4_encode_sequence(struct nfsd4_compoundres *resp, int nfserr, |
| 3125 | struct nfsd4_sequence *seq) |
| 3126 | { |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 3127 | __be32 *p; |
Benny Halevy | b85d4c0 | 2009-04-03 08:28:08 +0300 | [diff] [blame] | 3128 | |
| 3129 | if (nfserr) |
| 3130 | return nfserr; |
| 3131 | |
| 3132 | RESERVE_SPACE(NFS4_MAX_SESSIONID_LEN + 20); |
| 3133 | WRITEMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN); |
| 3134 | WRITE32(seq->seqid); |
| 3135 | WRITE32(seq->slotid); |
| 3136 | WRITE32(seq->maxslots); |
J. Bruce Fields | 0d7bb71 | 2010-11-18 08:30:33 -0500 | [diff] [blame] | 3137 | /* For now: target_maxslots = maxslots */ |
Benny Halevy | b85d4c0 | 2009-04-03 08:28:08 +0300 | [diff] [blame] | 3138 | WRITE32(seq->maxslots); |
J. Bruce Fields | 0d7bb71 | 2010-11-18 08:30:33 -0500 | [diff] [blame] | 3139 | WRITE32(seq->status_flags); |
Benny Halevy | b85d4c0 | 2009-04-03 08:28:08 +0300 | [diff] [blame] | 3140 | |
| 3141 | ADJUST_ARGS(); |
Andy Adamson | 557ce26 | 2009-08-28 08:45:04 -0400 | [diff] [blame] | 3142 | resp->cstate.datap = p; /* DRC cache data pointer */ |
Benny Halevy | b85d4c0 | 2009-04-03 08:28:08 +0300 | [diff] [blame] | 3143 | return 0; |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 3144 | } |
| 3145 | |
| 3146 | static __be32 |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 3147 | nfsd4_encode_noop(struct nfsd4_compoundres *resp, __be32 nfserr, void *p) |
| 3148 | { |
| 3149 | return nfserr; |
| 3150 | } |
| 3151 | |
| 3152 | typedef __be32(* nfsd4_enc)(struct nfsd4_compoundres *, __be32, void *); |
| 3153 | |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 3154 | /* |
| 3155 | * Note: nfsd4_enc_ops vector is shared for v4.0 and v4.1 |
| 3156 | * since we don't need to filter out obsolete ops as this is |
| 3157 | * done in the decoding phase. |
| 3158 | */ |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 3159 | static nfsd4_enc nfsd4_enc_ops[] = { |
J. Bruce Fields | ad1060c | 2008-07-18 15:04:16 -0400 | [diff] [blame] | 3160 | [OP_ACCESS] = (nfsd4_enc)nfsd4_encode_access, |
| 3161 | [OP_CLOSE] = (nfsd4_enc)nfsd4_encode_close, |
| 3162 | [OP_COMMIT] = (nfsd4_enc)nfsd4_encode_commit, |
| 3163 | [OP_CREATE] = (nfsd4_enc)nfsd4_encode_create, |
| 3164 | [OP_DELEGPURGE] = (nfsd4_enc)nfsd4_encode_noop, |
| 3165 | [OP_DELEGRETURN] = (nfsd4_enc)nfsd4_encode_noop, |
| 3166 | [OP_GETATTR] = (nfsd4_enc)nfsd4_encode_getattr, |
| 3167 | [OP_GETFH] = (nfsd4_enc)nfsd4_encode_getfh, |
| 3168 | [OP_LINK] = (nfsd4_enc)nfsd4_encode_link, |
| 3169 | [OP_LOCK] = (nfsd4_enc)nfsd4_encode_lock, |
| 3170 | [OP_LOCKT] = (nfsd4_enc)nfsd4_encode_lockt, |
| 3171 | [OP_LOCKU] = (nfsd4_enc)nfsd4_encode_locku, |
| 3172 | [OP_LOOKUP] = (nfsd4_enc)nfsd4_encode_noop, |
| 3173 | [OP_LOOKUPP] = (nfsd4_enc)nfsd4_encode_noop, |
| 3174 | [OP_NVERIFY] = (nfsd4_enc)nfsd4_encode_noop, |
| 3175 | [OP_OPEN] = (nfsd4_enc)nfsd4_encode_open, |
Benny Halevy | 84f09f4 | 2009-03-04 23:05:35 +0200 | [diff] [blame] | 3176 | [OP_OPENATTR] = (nfsd4_enc)nfsd4_encode_noop, |
J. Bruce Fields | ad1060c | 2008-07-18 15:04:16 -0400 | [diff] [blame] | 3177 | [OP_OPEN_CONFIRM] = (nfsd4_enc)nfsd4_encode_open_confirm, |
| 3178 | [OP_OPEN_DOWNGRADE] = (nfsd4_enc)nfsd4_encode_open_downgrade, |
| 3179 | [OP_PUTFH] = (nfsd4_enc)nfsd4_encode_noop, |
| 3180 | [OP_PUTPUBFH] = (nfsd4_enc)nfsd4_encode_noop, |
| 3181 | [OP_PUTROOTFH] = (nfsd4_enc)nfsd4_encode_noop, |
| 3182 | [OP_READ] = (nfsd4_enc)nfsd4_encode_read, |
| 3183 | [OP_READDIR] = (nfsd4_enc)nfsd4_encode_readdir, |
| 3184 | [OP_READLINK] = (nfsd4_enc)nfsd4_encode_readlink, |
| 3185 | [OP_REMOVE] = (nfsd4_enc)nfsd4_encode_remove, |
| 3186 | [OP_RENAME] = (nfsd4_enc)nfsd4_encode_rename, |
| 3187 | [OP_RENEW] = (nfsd4_enc)nfsd4_encode_noop, |
| 3188 | [OP_RESTOREFH] = (nfsd4_enc)nfsd4_encode_noop, |
| 3189 | [OP_SAVEFH] = (nfsd4_enc)nfsd4_encode_noop, |
| 3190 | [OP_SECINFO] = (nfsd4_enc)nfsd4_encode_secinfo, |
| 3191 | [OP_SETATTR] = (nfsd4_enc)nfsd4_encode_setattr, |
| 3192 | [OP_SETCLIENTID] = (nfsd4_enc)nfsd4_encode_setclientid, |
| 3193 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_enc)nfsd4_encode_noop, |
| 3194 | [OP_VERIFY] = (nfsd4_enc)nfsd4_encode_noop, |
| 3195 | [OP_WRITE] = (nfsd4_enc)nfsd4_encode_write, |
| 3196 | [OP_RELEASE_LOCKOWNER] = (nfsd4_enc)nfsd4_encode_noop, |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 3197 | |
| 3198 | /* NFSv4.1 operations */ |
| 3199 | [OP_BACKCHANNEL_CTL] = (nfsd4_enc)nfsd4_encode_noop, |
J. Bruce Fields | 1d1bc8f | 2010-10-04 23:12:59 -0400 | [diff] [blame] | 3200 | [OP_BIND_CONN_TO_SESSION] = (nfsd4_enc)nfsd4_encode_bind_conn_to_session, |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 3201 | [OP_EXCHANGE_ID] = (nfsd4_enc)nfsd4_encode_exchange_id, |
| 3202 | [OP_CREATE_SESSION] = (nfsd4_enc)nfsd4_encode_create_session, |
| 3203 | [OP_DESTROY_SESSION] = (nfsd4_enc)nfsd4_encode_destroy_session, |
| 3204 | [OP_FREE_STATEID] = (nfsd4_enc)nfsd4_encode_noop, |
| 3205 | [OP_GET_DIR_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, |
| 3206 | [OP_GETDEVICEINFO] = (nfsd4_enc)nfsd4_encode_noop, |
| 3207 | [OP_GETDEVICELIST] = (nfsd4_enc)nfsd4_encode_noop, |
| 3208 | [OP_LAYOUTCOMMIT] = (nfsd4_enc)nfsd4_encode_noop, |
| 3209 | [OP_LAYOUTGET] = (nfsd4_enc)nfsd4_encode_noop, |
| 3210 | [OP_LAYOUTRETURN] = (nfsd4_enc)nfsd4_encode_noop, |
Mi Jinlong | 22b6dee | 2010-12-27 14:29:57 +0800 | [diff] [blame] | 3211 | [OP_SECINFO_NO_NAME] = (nfsd4_enc)nfsd4_encode_secinfo_no_name, |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 3212 | [OP_SEQUENCE] = (nfsd4_enc)nfsd4_encode_sequence, |
| 3213 | [OP_SET_SSV] = (nfsd4_enc)nfsd4_encode_noop, |
| 3214 | [OP_TEST_STATEID] = (nfsd4_enc)nfsd4_encode_noop, |
| 3215 | [OP_WANT_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, |
| 3216 | [OP_DESTROY_CLIENTID] = (nfsd4_enc)nfsd4_encode_noop, |
| 3217 | [OP_RECLAIM_COMPLETE] = (nfsd4_enc)nfsd4_encode_noop, |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 3218 | }; |
| 3219 | |
Andy Adamson | 496c262 | 2009-04-03 08:28:48 +0300 | [diff] [blame] | 3220 | /* |
| 3221 | * Calculate the total amount of memory that the compound response has taken |
| 3222 | * after encoding the current operation. |
| 3223 | * |
| 3224 | * pad: add on 8 bytes for the next operation's op_code and status so that |
| 3225 | * there is room to cache a failure on the next operation. |
| 3226 | * |
| 3227 | * Compare this length to the session se_fmaxresp_cached. |
| 3228 | * |
| 3229 | * Our se_fmaxresp_cached will always be a multiple of PAGE_SIZE, and so |
| 3230 | * will be at least a page and will therefore hold the xdr_buf head. |
| 3231 | */ |
| 3232 | static int nfsd4_check_drc_limit(struct nfsd4_compoundres *resp) |
| 3233 | { |
| 3234 | int status = 0; |
| 3235 | struct xdr_buf *xb = &resp->rqstp->rq_res; |
| 3236 | struct nfsd4_compoundargs *args = resp->rqstp->rq_argp; |
| 3237 | struct nfsd4_session *session = NULL; |
| 3238 | struct nfsd4_slot *slot = resp->cstate.slot; |
| 3239 | u32 length, tlen = 0, pad = 8; |
| 3240 | |
| 3241 | if (!nfsd4_has_session(&resp->cstate)) |
| 3242 | return status; |
| 3243 | |
| 3244 | session = resp->cstate.session; |
Andy Adamson | 557ce26 | 2009-08-28 08:45:04 -0400 | [diff] [blame] | 3245 | if (session == NULL || slot->sl_cachethis == 0) |
Andy Adamson | 496c262 | 2009-04-03 08:28:48 +0300 | [diff] [blame] | 3246 | return status; |
| 3247 | |
| 3248 | if (resp->opcnt >= args->opcnt) |
| 3249 | pad = 0; /* this is the last operation */ |
| 3250 | |
| 3251 | if (xb->page_len == 0) { |
| 3252 | length = (char *)resp->p - (char *)xb->head[0].iov_base + pad; |
| 3253 | } else { |
| 3254 | if (xb->tail[0].iov_base && xb->tail[0].iov_len > 0) |
| 3255 | tlen = (char *)resp->p - (char *)xb->tail[0].iov_base; |
| 3256 | |
| 3257 | length = xb->head[0].iov_len + xb->page_len + tlen + pad; |
| 3258 | } |
| 3259 | dprintk("%s length %u, xb->page_len %u tlen %u pad %u\n", __func__, |
| 3260 | length, xb->page_len, tlen, pad); |
| 3261 | |
Alexandros Batsakis | 6c18ba9 | 2009-06-16 04:19:13 +0300 | [diff] [blame] | 3262 | if (length <= session->se_fchannel.maxresp_cached) |
Andy Adamson | 496c262 | 2009-04-03 08:28:48 +0300 | [diff] [blame] | 3263 | return status; |
| 3264 | else |
| 3265 | return nfserr_rep_too_big_to_cache; |
| 3266 | } |
| 3267 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3268 | void |
| 3269 | nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op) |
| 3270 | { |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 3271 | __be32 *statp; |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 3272 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3273 | |
| 3274 | RESERVE_SPACE(8); |
| 3275 | WRITE32(op->opnum); |
| 3276 | statp = p++; /* to be backfilled at the end */ |
| 3277 | ADJUST_ARGS(); |
| 3278 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 3279 | if (op->opnum == OP_ILLEGAL) |
| 3280 | goto status; |
| 3281 | BUG_ON(op->opnum < 0 || op->opnum >= ARRAY_SIZE(nfsd4_enc_ops) || |
| 3282 | !nfsd4_enc_ops[op->opnum]); |
| 3283 | op->status = nfsd4_enc_ops[op->opnum](resp, op->status, &op->u); |
Andy Adamson | 496c262 | 2009-04-03 08:28:48 +0300 | [diff] [blame] | 3284 | /* nfsd4_check_drc_limit guarantees enough room for error status */ |
| 3285 | if (!op->status && nfsd4_check_drc_limit(resp)) |
| 3286 | op->status = nfserr_rep_too_big_to_cache; |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 3287 | status: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3288 | /* |
| 3289 | * Note: We write the status directly, instead of using WRITE32(), |
| 3290 | * since it is already in network byte order. |
| 3291 | */ |
| 3292 | *statp = op->status; |
| 3293 | } |
| 3294 | |
| 3295 | /* |
| 3296 | * Encode the reply stored in the stateowner reply cache |
| 3297 | * |
| 3298 | * XDR note: do not encode rp->rp_buflen: the buffer contains the |
| 3299 | * previously sent already encoded operation. |
| 3300 | * |
| 3301 | * called with nfs4_lock_state() held |
| 3302 | */ |
| 3303 | void |
| 3304 | nfsd4_encode_replay(struct nfsd4_compoundres *resp, struct nfsd4_op *op) |
| 3305 | { |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 3306 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3307 | struct nfs4_replay *rp = op->replay; |
| 3308 | |
| 3309 | BUG_ON(!rp); |
| 3310 | |
| 3311 | RESERVE_SPACE(8); |
| 3312 | WRITE32(op->opnum); |
| 3313 | *p++ = rp->rp_status; /* already xdr'ed */ |
| 3314 | ADJUST_ARGS(); |
| 3315 | |
| 3316 | RESERVE_SPACE(rp->rp_buflen); |
| 3317 | WRITEMEM(rp->rp_buf, rp->rp_buflen); |
| 3318 | ADJUST_ARGS(); |
| 3319 | } |
| 3320 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3321 | int |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 3322 | nfs4svc_encode_voidres(struct svc_rqst *rqstp, __be32 *p, void *dummy) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3323 | { |
| 3324 | return xdr_ressize_check(rqstp, p); |
| 3325 | } |
| 3326 | |
| 3327 | void nfsd4_release_compoundargs(struct nfsd4_compoundargs *args) |
| 3328 | { |
| 3329 | if (args->ops != args->iops) { |
| 3330 | kfree(args->ops); |
| 3331 | args->ops = args->iops; |
| 3332 | } |
Jesper Juhl | f99d49a | 2005-11-07 01:01:34 -0800 | [diff] [blame] | 3333 | kfree(args->tmpp); |
| 3334 | args->tmpp = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3335 | while (args->to_free) { |
| 3336 | struct tmpbuf *tb = args->to_free; |
| 3337 | args->to_free = tb->next; |
| 3338 | tb->release(tb->buf); |
| 3339 | kfree(tb); |
| 3340 | } |
| 3341 | } |
| 3342 | |
| 3343 | int |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 3344 | nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundargs *args) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3345 | { |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 3346 | __be32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3347 | |
| 3348 | args->p = p; |
| 3349 | args->end = rqstp->rq_arg.head[0].iov_base + rqstp->rq_arg.head[0].iov_len; |
| 3350 | args->pagelist = rqstp->rq_arg.pages; |
| 3351 | args->pagelen = rqstp->rq_arg.page_len; |
| 3352 | args->tmpp = NULL; |
| 3353 | args->to_free = NULL; |
| 3354 | args->ops = args->iops; |
| 3355 | args->rqstp = rqstp; |
| 3356 | |
| 3357 | status = nfsd4_decode_compound(args); |
| 3358 | if (status) { |
| 3359 | nfsd4_release_compoundargs(args); |
| 3360 | } |
| 3361 | return !status; |
| 3362 | } |
| 3363 | |
| 3364 | int |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 3365 | nfs4svc_encode_compoundres(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundres *resp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3366 | { |
| 3367 | /* |
| 3368 | * All that remains is to write the tag and operation count... |
| 3369 | */ |
Andy Adamson | 557ce26 | 2009-08-28 08:45:04 -0400 | [diff] [blame] | 3370 | struct nfsd4_compound_state *cs = &resp->cstate; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3371 | struct kvec *iov; |
| 3372 | p = resp->tagp; |
| 3373 | *p++ = htonl(resp->taglen); |
| 3374 | memcpy(p, resp->tag, resp->taglen); |
| 3375 | p += XDR_QUADLEN(resp->taglen); |
| 3376 | *p++ = htonl(resp->opcnt); |
| 3377 | |
| 3378 | if (rqstp->rq_res.page_len) |
| 3379 | iov = &rqstp->rq_res.tail[0]; |
| 3380 | else |
| 3381 | iov = &rqstp->rq_res.head[0]; |
| 3382 | iov->iov_len = ((char*)resp->p) - (char*)iov->iov_base; |
| 3383 | BUG_ON(iov->iov_len > PAGE_SIZE); |
J. Bruce Fields | 26c0c75 | 2010-04-24 15:35:43 -0400 | [diff] [blame] | 3384 | if (nfsd4_has_session(cs)) { |
| 3385 | if (cs->status != nfserr_replay_cache) { |
| 3386 | nfsd4_store_cache_entry(resp); |
| 3387 | dprintk("%s: SET SLOT STATE TO AVAILABLE\n", __func__); |
Benny Halevy | dbd65a7 | 2010-05-03 19:31:33 +0300 | [diff] [blame] | 3388 | cs->slot->sl_inuse = false; |
J. Bruce Fields | 26c0c75 | 2010-04-24 15:35:43 -0400 | [diff] [blame] | 3389 | } |
Benny Halevy | d768298 | 2010-05-12 00:13:54 +0300 | [diff] [blame] | 3390 | /* Renew the clientid on success and on replay */ |
| 3391 | release_session_client(cs->session); |
J. Bruce Fields | 76407f7 | 2010-06-22 14:10:14 -0400 | [diff] [blame] | 3392 | nfsd4_put_session(cs->session); |
Andy Adamson | da3846a | 2009-04-03 08:28:22 +0300 | [diff] [blame] | 3393 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3394 | return 1; |
| 3395 | } |
| 3396 | |
| 3397 | /* |
| 3398 | * Local variables: |
| 3399 | * c-basic-offset: 8 |
| 3400 | * End: |
| 3401 | */ |