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> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | #include <linux/nfsd_idmap.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | #include <linux/nfs4_acl.h> |
J. Bruce Fields | 4796f45 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 49 | #include <linux/sunrpc/svcauth_gss.h> |
Boaz Harrosh | 9a74af2 | 2009-12-03 20:30:56 +0200 | [diff] [blame] | 50 | |
| 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 | |
| 54 | #define NFSDDBG_FACILITY NFSDDBG_XDR |
| 55 | |
J.Bruce Fields | 42ca099 | 2006-10-04 02:16:20 -0700 | [diff] [blame] | 56 | /* |
| 57 | * As per referral draft, the fsid for a referral MUST be different from the fsid of the containing |
| 58 | * directory in order to indicate to the client that a filesystem boundary is present |
| 59 | * We use a fixed fsid for a referral |
| 60 | */ |
| 61 | #define NFS4_REFERRAL_FSID_MAJOR 0x8000000ULL |
| 62 | #define NFS4_REFERRAL_FSID_MINOR 0x8000000ULL |
| 63 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 64 | static __be32 |
| 65 | check_filename(char *str, int len, __be32 err) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | { |
| 67 | int i; |
| 68 | |
| 69 | if (len == 0) |
| 70 | return nfserr_inval; |
| 71 | if (isdotent(str, len)) |
| 72 | return err; |
| 73 | for (i = 0; i < len; i++) |
| 74 | if (str[i] == '/') |
| 75 | return err; |
| 76 | return 0; |
| 77 | } |
| 78 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | #define DECODE_HEAD \ |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 80 | __be32 *p; \ |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 81 | __be32 status |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | #define DECODE_TAIL \ |
| 83 | status = 0; \ |
| 84 | out: \ |
| 85 | return status; \ |
| 86 | xdr_error: \ |
Chuck Lever | 817cb9d | 2007-09-11 18:01:20 -0400 | [diff] [blame] | 87 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
| 88 | __FILE__, __LINE__); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | status = nfserr_bad_xdr; \ |
| 90 | goto out |
| 91 | |
| 92 | #define READ32(x) (x) = ntohl(*p++) |
| 93 | #define READ64(x) do { \ |
| 94 | (x) = (u64)ntohl(*p++) << 32; \ |
| 95 | (x) |= ntohl(*p++); \ |
| 96 | } while (0) |
| 97 | #define READTIME(x) do { \ |
| 98 | p++; \ |
| 99 | (x) = ntohl(*p++); \ |
| 100 | p++; \ |
| 101 | } while (0) |
| 102 | #define READMEM(x,nbytes) do { \ |
| 103 | x = (char *)p; \ |
| 104 | p += XDR_QUADLEN(nbytes); \ |
| 105 | } while (0) |
| 106 | #define SAVEMEM(x,nbytes) do { \ |
| 107 | if (!(x = (p==argp->tmp || p == argp->tmpp) ? \ |
| 108 | savemem(argp, p, nbytes) : \ |
| 109 | (char *)p)) { \ |
Chuck Lever | 817cb9d | 2007-09-11 18:01:20 -0400 | [diff] [blame] | 110 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
| 111 | __FILE__, __LINE__); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 112 | goto xdr_error; \ |
| 113 | } \ |
| 114 | p += XDR_QUADLEN(nbytes); \ |
| 115 | } while (0) |
| 116 | #define COPYMEM(x,nbytes) do { \ |
| 117 | memcpy((x), p, nbytes); \ |
| 118 | p += XDR_QUADLEN(nbytes); \ |
| 119 | } while (0) |
| 120 | |
| 121 | /* READ_BUF, read_buf(): nbytes must be <= PAGE_SIZE */ |
| 122 | #define READ_BUF(nbytes) do { \ |
| 123 | if (nbytes <= (u32)((char *)argp->end - (char *)argp->p)) { \ |
| 124 | p = argp->p; \ |
| 125 | argp->p += XDR_QUADLEN(nbytes); \ |
| 126 | } else if (!(p = read_buf(argp, nbytes))) { \ |
Chuck Lever | 817cb9d | 2007-09-11 18:01:20 -0400 | [diff] [blame] | 127 | dprintk("NFSD: xdr error (%s:%d)\n", \ |
| 128 | __FILE__, __LINE__); \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 129 | goto xdr_error; \ |
| 130 | } \ |
| 131 | } while (0) |
| 132 | |
J. Bruce Fields | ca2a05a | 2007-11-11 15:43:12 -0500 | [diff] [blame] | 133 | static __be32 *read_buf(struct nfsd4_compoundargs *argp, u32 nbytes) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | { |
| 135 | /* We want more bytes than seem to be available. |
| 136 | * Maybe we need a new page, maybe we have just run out |
| 137 | */ |
J. Bruce Fields | ca2a05a | 2007-11-11 15:43:12 -0500 | [diff] [blame] | 138 | unsigned int avail = (char *)argp->end - (char *)argp->p; |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 139 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 140 | if (avail + argp->pagelen < nbytes) |
| 141 | return NULL; |
| 142 | if (avail + PAGE_SIZE < nbytes) /* need more than a page !! */ |
| 143 | return NULL; |
| 144 | /* ok, we can do it with the current plus the next page */ |
| 145 | if (nbytes <= sizeof(argp->tmp)) |
| 146 | p = argp->tmp; |
| 147 | else { |
Jesper Juhl | f99d49a | 2005-11-07 01:01:34 -0800 | [diff] [blame] | 148 | kfree(argp->tmpp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | p = argp->tmpp = kmalloc(nbytes, GFP_KERNEL); |
| 150 | if (!p) |
| 151 | return NULL; |
| 152 | |
| 153 | } |
J. Bruce Fields | ca2a05a | 2007-11-11 15:43:12 -0500 | [diff] [blame] | 154 | /* |
| 155 | * The following memcpy is safe because read_buf is always |
| 156 | * called with nbytes > avail, and the two cases above both |
| 157 | * guarantee p points to at least nbytes bytes. |
| 158 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | memcpy(p, argp->p, avail); |
| 160 | /* step to next page */ |
| 161 | argp->p = page_address(argp->pagelist[0]); |
| 162 | argp->pagelist++; |
| 163 | if (argp->pagelen < PAGE_SIZE) { |
Neil Brown | 2bc3c11 | 2010-04-20 12:16:52 +1000 | [diff] [blame] | 164 | argp->end = argp->p + (argp->pagelen>>2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | argp->pagelen = 0; |
| 166 | } else { |
Neil Brown | 2bc3c11 | 2010-04-20 12:16:52 +1000 | [diff] [blame] | 167 | argp->end = argp->p + (PAGE_SIZE>>2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 168 | argp->pagelen -= PAGE_SIZE; |
| 169 | } |
| 170 | memcpy(((char*)p)+avail, argp->p, (nbytes - avail)); |
| 171 | argp->p += XDR_QUADLEN(nbytes - avail); |
| 172 | return p; |
| 173 | } |
| 174 | |
Andy Adamson | 60adfc5 | 2009-04-03 08:28:50 +0300 | [diff] [blame] | 175 | static int zero_clientid(clientid_t *clid) |
| 176 | { |
| 177 | return (clid->cl_boot == 0) && (clid->cl_id == 0); |
| 178 | } |
| 179 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | static int |
| 181 | defer_free(struct nfsd4_compoundargs *argp, |
| 182 | void (*release)(const void *), void *p) |
| 183 | { |
| 184 | struct tmpbuf *tb; |
| 185 | |
| 186 | tb = kmalloc(sizeof(*tb), GFP_KERNEL); |
| 187 | if (!tb) |
| 188 | return -ENOMEM; |
| 189 | tb->buf = p; |
| 190 | tb->release = release; |
| 191 | tb->next = argp->to_free; |
| 192 | argp->to_free = tb; |
| 193 | return 0; |
| 194 | } |
| 195 | |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 196 | static char *savemem(struct nfsd4_compoundargs *argp, __be32 *p, int nbytes) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | if (p == argp->tmp) { |
J. Bruce Fields | a4db5fe | 2007-02-16 01:28:30 -0800 | [diff] [blame] | 199 | p = kmalloc(nbytes, GFP_KERNEL); |
| 200 | if (!p) |
| 201 | return NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | memcpy(p, argp->tmp, nbytes); |
| 203 | } else { |
Eric Sesterhenn | 73dff8b | 2006-10-03 23:37:14 +0200 | [diff] [blame] | 204 | BUG_ON(p != argp->tmpp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | argp->tmpp = NULL; |
| 206 | } |
| 207 | if (defer_free(argp, kfree, p)) { |
J. Bruce Fields | a4db5fe | 2007-02-16 01:28:30 -0800 | [diff] [blame] | 208 | kfree(p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | return NULL; |
| 210 | } else |
| 211 | return (char *)p; |
| 212 | } |
| 213 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 214 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 215 | nfsd4_decode_bitmap(struct nfsd4_compoundargs *argp, u32 *bmval) |
| 216 | { |
| 217 | u32 bmlen; |
| 218 | DECODE_HEAD; |
| 219 | |
| 220 | bmval[0] = 0; |
| 221 | bmval[1] = 0; |
Andy Adamson | 7e70570 | 2009-04-03 08:29:11 +0300 | [diff] [blame] | 222 | bmval[2] = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 223 | |
| 224 | READ_BUF(4); |
| 225 | READ32(bmlen); |
| 226 | if (bmlen > 1000) |
| 227 | goto xdr_error; |
| 228 | |
| 229 | READ_BUF(bmlen << 2); |
| 230 | if (bmlen > 0) |
| 231 | READ32(bmval[0]); |
| 232 | if (bmlen > 1) |
| 233 | READ32(bmval[1]); |
Andy Adamson | 7e70570 | 2009-04-03 08:29:11 +0300 | [diff] [blame] | 234 | if (bmlen > 2) |
| 235 | READ32(bmval[2]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | |
| 237 | DECODE_TAIL; |
| 238 | } |
| 239 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 240 | static __be32 |
Yu Zhiguo | 3c8e031 | 2009-05-16 16:22:31 +0800 | [diff] [blame] | 241 | nfsd4_decode_fattr(struct nfsd4_compoundargs *argp, u32 *bmval, |
Benny Halevy | c0d6fc8 | 2009-04-03 08:29:05 +0300 | [diff] [blame] | 242 | struct iattr *iattr, struct nfs4_acl **acl) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 243 | { |
| 244 | int expected_len, len = 0; |
| 245 | u32 dummy32; |
| 246 | char *buf; |
Al Viro | b8dd7b9 | 2006-10-19 23:29:01 -0700 | [diff] [blame] | 247 | int host_err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 248 | |
| 249 | DECODE_HEAD; |
| 250 | iattr->ia_valid = 0; |
| 251 | if ((status = nfsd4_decode_bitmap(argp, bmval))) |
| 252 | return status; |
| 253 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | READ_BUF(4); |
| 255 | READ32(expected_len); |
| 256 | |
| 257 | if (bmval[0] & FATTR4_WORD0_SIZE) { |
| 258 | READ_BUF(8); |
| 259 | len += 8; |
| 260 | READ64(iattr->ia_size); |
| 261 | iattr->ia_valid |= ATTR_SIZE; |
| 262 | } |
| 263 | if (bmval[0] & FATTR4_WORD0_ACL) { |
J. Bruce Fields | 28e05dd | 2007-02-16 01:28:30 -0800 | [diff] [blame] | 264 | int nace; |
| 265 | struct nfs4_ace *ace; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | |
| 267 | READ_BUF(4); len += 4; |
| 268 | READ32(nace); |
| 269 | |
J. Bruce Fields | 28e05dd | 2007-02-16 01:28:30 -0800 | [diff] [blame] | 270 | if (nace > NFS4_ACL_MAX) |
| 271 | return nfserr_resource; |
| 272 | |
| 273 | *acl = nfs4_acl_new(nace); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 274 | if (*acl == NULL) { |
Al Viro | b8dd7b9 | 2006-10-19 23:29:01 -0700 | [diff] [blame] | 275 | host_err = -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 276 | goto out_nfserr; |
| 277 | } |
J. Bruce Fields | 28e05dd | 2007-02-16 01:28:30 -0800 | [diff] [blame] | 278 | defer_free(argp, kfree, *acl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | |
J. Bruce Fields | 28e05dd | 2007-02-16 01:28:30 -0800 | [diff] [blame] | 280 | (*acl)->naces = nace; |
| 281 | for (ace = (*acl)->aces; ace < (*acl)->aces + nace; ace++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | READ_BUF(16); len += 16; |
J. Bruce Fields | 28e05dd | 2007-02-16 01:28:30 -0800 | [diff] [blame] | 283 | READ32(ace->type); |
| 284 | READ32(ace->flag); |
| 285 | READ32(ace->access_mask); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | READ32(dummy32); |
| 287 | READ_BUF(dummy32); |
| 288 | len += XDR_QUADLEN(dummy32) << 2; |
| 289 | READMEM(buf, dummy32); |
J. Bruce Fields | 28e05dd | 2007-02-16 01:28:30 -0800 | [diff] [blame] | 290 | ace->whotype = nfs4_acl_get_whotype(buf, dummy32); |
Al Viro | b8dd7b9 | 2006-10-19 23:29:01 -0700 | [diff] [blame] | 291 | host_err = 0; |
J. Bruce Fields | 28e05dd | 2007-02-16 01:28:30 -0800 | [diff] [blame] | 292 | if (ace->whotype != NFS4_ACL_WHO_NAMED) |
| 293 | ace->who = 0; |
| 294 | else if (ace->flag & NFS4_ACE_IDENTIFIER_GROUP) |
Al Viro | b8dd7b9 | 2006-10-19 23:29:01 -0700 | [diff] [blame] | 295 | host_err = nfsd_map_name_to_gid(argp->rqstp, |
J. Bruce Fields | 28e05dd | 2007-02-16 01:28:30 -0800 | [diff] [blame] | 296 | buf, dummy32, &ace->who); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | else |
Al Viro | b8dd7b9 | 2006-10-19 23:29:01 -0700 | [diff] [blame] | 298 | host_err = nfsd_map_name_to_uid(argp->rqstp, |
J. Bruce Fields | 28e05dd | 2007-02-16 01:28:30 -0800 | [diff] [blame] | 299 | buf, dummy32, &ace->who); |
Al Viro | b8dd7b9 | 2006-10-19 23:29:01 -0700 | [diff] [blame] | 300 | if (host_err) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | goto out_nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | } |
| 303 | } else |
| 304 | *acl = NULL; |
| 305 | if (bmval[1] & FATTR4_WORD1_MODE) { |
| 306 | READ_BUF(4); |
| 307 | len += 4; |
| 308 | READ32(iattr->ia_mode); |
| 309 | iattr->ia_mode &= (S_IFMT | S_IALLUGO); |
| 310 | iattr->ia_valid |= ATTR_MODE; |
| 311 | } |
| 312 | if (bmval[1] & FATTR4_WORD1_OWNER) { |
| 313 | READ_BUF(4); |
| 314 | len += 4; |
| 315 | READ32(dummy32); |
| 316 | READ_BUF(dummy32); |
| 317 | len += (XDR_QUADLEN(dummy32) << 2); |
| 318 | READMEM(buf, dummy32); |
Al Viro | b8dd7b9 | 2006-10-19 23:29:01 -0700 | [diff] [blame] | 319 | if ((host_err = nfsd_map_name_to_uid(argp->rqstp, buf, dummy32, &iattr->ia_uid))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | goto out_nfserr; |
| 321 | iattr->ia_valid |= ATTR_UID; |
| 322 | } |
| 323 | if (bmval[1] & FATTR4_WORD1_OWNER_GROUP) { |
| 324 | READ_BUF(4); |
| 325 | len += 4; |
| 326 | READ32(dummy32); |
| 327 | READ_BUF(dummy32); |
| 328 | len += (XDR_QUADLEN(dummy32) << 2); |
| 329 | READMEM(buf, dummy32); |
Al Viro | b8dd7b9 | 2006-10-19 23:29:01 -0700 | [diff] [blame] | 330 | if ((host_err = nfsd_map_name_to_gid(argp->rqstp, buf, dummy32, &iattr->ia_gid))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | goto out_nfserr; |
| 332 | iattr->ia_valid |= ATTR_GID; |
| 333 | } |
| 334 | if (bmval[1] & FATTR4_WORD1_TIME_ACCESS_SET) { |
| 335 | READ_BUF(4); |
| 336 | len += 4; |
| 337 | READ32(dummy32); |
| 338 | switch (dummy32) { |
| 339 | case NFS4_SET_TO_CLIENT_TIME: |
| 340 | /* We require the high 32 bits of 'seconds' to be 0, and we ignore |
| 341 | all 32 bits of 'nseconds'. */ |
| 342 | READ_BUF(12); |
| 343 | len += 12; |
| 344 | READ32(dummy32); |
| 345 | if (dummy32) |
| 346 | return nfserr_inval; |
| 347 | READ32(iattr->ia_atime.tv_sec); |
| 348 | READ32(iattr->ia_atime.tv_nsec); |
| 349 | if (iattr->ia_atime.tv_nsec >= (u32)1000000000) |
| 350 | return nfserr_inval; |
| 351 | iattr->ia_valid |= (ATTR_ATIME | ATTR_ATIME_SET); |
| 352 | break; |
| 353 | case NFS4_SET_TO_SERVER_TIME: |
| 354 | iattr->ia_valid |= ATTR_ATIME; |
| 355 | break; |
| 356 | default: |
| 357 | goto xdr_error; |
| 358 | } |
| 359 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 360 | if (bmval[1] & FATTR4_WORD1_TIME_MODIFY_SET) { |
| 361 | READ_BUF(4); |
| 362 | len += 4; |
| 363 | READ32(dummy32); |
| 364 | switch (dummy32) { |
| 365 | case NFS4_SET_TO_CLIENT_TIME: |
| 366 | /* We require the high 32 bits of 'seconds' to be 0, and we ignore |
| 367 | all 32 bits of 'nseconds'. */ |
| 368 | READ_BUF(12); |
| 369 | len += 12; |
| 370 | READ32(dummy32); |
| 371 | if (dummy32) |
| 372 | return nfserr_inval; |
| 373 | READ32(iattr->ia_mtime.tv_sec); |
| 374 | READ32(iattr->ia_mtime.tv_nsec); |
| 375 | if (iattr->ia_mtime.tv_nsec >= (u32)1000000000) |
| 376 | return nfserr_inval; |
| 377 | iattr->ia_valid |= (ATTR_MTIME | ATTR_MTIME_SET); |
| 378 | break; |
| 379 | case NFS4_SET_TO_SERVER_TIME: |
| 380 | iattr->ia_valid |= ATTR_MTIME; |
| 381 | break; |
| 382 | default: |
| 383 | goto xdr_error; |
| 384 | } |
| 385 | } |
Yu Zhiguo | 3c8e031 | 2009-05-16 16:22:31 +0800 | [diff] [blame] | 386 | if (bmval[0] & ~NFSD_WRITEABLE_ATTRS_WORD0 |
| 387 | || bmval[1] & ~NFSD_WRITEABLE_ATTRS_WORD1 |
| 388 | || bmval[2] & ~NFSD_WRITEABLE_ATTRS_WORD2) |
| 389 | READ_BUF(expected_len - len); |
| 390 | else if (len != expected_len) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 391 | goto xdr_error; |
| 392 | |
| 393 | DECODE_TAIL; |
| 394 | |
| 395 | out_nfserr: |
Al Viro | b8dd7b9 | 2006-10-19 23:29:01 -0700 | [diff] [blame] | 396 | status = nfserrno(host_err); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 397 | goto out; |
| 398 | } |
| 399 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 400 | static __be32 |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 401 | nfsd4_decode_stateid(struct nfsd4_compoundargs *argp, stateid_t *sid) |
| 402 | { |
| 403 | DECODE_HEAD; |
| 404 | |
| 405 | READ_BUF(sizeof(stateid_t)); |
| 406 | READ32(sid->si_generation); |
| 407 | COPYMEM(&sid->si_opaque, sizeof(stateid_opaque_t)); |
| 408 | |
| 409 | DECODE_TAIL; |
| 410 | } |
| 411 | |
| 412 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 413 | nfsd4_decode_access(struct nfsd4_compoundargs *argp, struct nfsd4_access *access) |
| 414 | { |
| 415 | DECODE_HEAD; |
| 416 | |
| 417 | READ_BUF(4); |
| 418 | READ32(access->ac_req_access); |
| 419 | |
| 420 | DECODE_TAIL; |
| 421 | } |
| 422 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 423 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 424 | nfsd4_decode_close(struct nfsd4_compoundargs *argp, struct nfsd4_close *close) |
| 425 | { |
| 426 | DECODE_HEAD; |
| 427 | |
| 428 | close->cl_stateowner = NULL; |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 429 | READ_BUF(4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 430 | READ32(close->cl_seqid); |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 431 | return nfsd4_decode_stateid(argp, &close->cl_stateid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 432 | |
| 433 | DECODE_TAIL; |
| 434 | } |
| 435 | |
| 436 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 437 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | nfsd4_decode_commit(struct nfsd4_compoundargs *argp, struct nfsd4_commit *commit) |
| 439 | { |
| 440 | DECODE_HEAD; |
| 441 | |
| 442 | READ_BUF(12); |
| 443 | READ64(commit->co_offset); |
| 444 | READ32(commit->co_count); |
| 445 | |
| 446 | DECODE_TAIL; |
| 447 | } |
| 448 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 449 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 450 | nfsd4_decode_create(struct nfsd4_compoundargs *argp, struct nfsd4_create *create) |
| 451 | { |
| 452 | DECODE_HEAD; |
| 453 | |
| 454 | READ_BUF(4); |
| 455 | READ32(create->cr_type); |
| 456 | switch (create->cr_type) { |
| 457 | case NF4LNK: |
| 458 | READ_BUF(4); |
| 459 | READ32(create->cr_linklen); |
| 460 | READ_BUF(create->cr_linklen); |
| 461 | SAVEMEM(create->cr_linkname, create->cr_linklen); |
| 462 | break; |
| 463 | case NF4BLK: |
| 464 | case NF4CHR: |
| 465 | READ_BUF(8); |
| 466 | READ32(create->cr_specdata1); |
| 467 | READ32(create->cr_specdata2); |
| 468 | break; |
| 469 | case NF4SOCK: |
| 470 | case NF4FIFO: |
| 471 | case NF4DIR: |
| 472 | default: |
| 473 | break; |
| 474 | } |
| 475 | |
| 476 | READ_BUF(4); |
| 477 | READ32(create->cr_namelen); |
| 478 | READ_BUF(create->cr_namelen); |
| 479 | SAVEMEM(create->cr_name, create->cr_namelen); |
| 480 | if ((status = check_filename(create->cr_name, create->cr_namelen, nfserr_inval))) |
| 481 | return status; |
| 482 | |
Yu Zhiguo | 3c8e031 | 2009-05-16 16:22:31 +0800 | [diff] [blame] | 483 | status = nfsd4_decode_fattr(argp, create->cr_bmval, &create->cr_iattr, |
| 484 | &create->cr_acl); |
Benny Halevy | c0d6fc8 | 2009-04-03 08:29:05 +0300 | [diff] [blame] | 485 | if (status) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 486 | goto out; |
| 487 | |
| 488 | DECODE_TAIL; |
| 489 | } |
| 490 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 491 | static inline __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 492 | nfsd4_decode_delegreturn(struct nfsd4_compoundargs *argp, struct nfsd4_delegreturn *dr) |
| 493 | { |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 494 | return nfsd4_decode_stateid(argp, &dr->dr_stateid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 495 | } |
| 496 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 497 | static inline __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 498 | nfsd4_decode_getattr(struct nfsd4_compoundargs *argp, struct nfsd4_getattr *getattr) |
| 499 | { |
| 500 | return nfsd4_decode_bitmap(argp, getattr->ga_bmval); |
| 501 | } |
| 502 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 503 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 504 | nfsd4_decode_link(struct nfsd4_compoundargs *argp, struct nfsd4_link *link) |
| 505 | { |
| 506 | DECODE_HEAD; |
| 507 | |
| 508 | READ_BUF(4); |
| 509 | READ32(link->li_namelen); |
| 510 | READ_BUF(link->li_namelen); |
| 511 | SAVEMEM(link->li_name, link->li_namelen); |
| 512 | if ((status = check_filename(link->li_name, link->li_namelen, nfserr_inval))) |
| 513 | return status; |
| 514 | |
| 515 | DECODE_TAIL; |
| 516 | } |
| 517 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 518 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 519 | nfsd4_decode_lock(struct nfsd4_compoundargs *argp, struct nfsd4_lock *lock) |
| 520 | { |
| 521 | DECODE_HEAD; |
| 522 | |
J. Bruce Fields | 3a65588 | 2006-01-18 17:43:19 -0800 | [diff] [blame] | 523 | lock->lk_replay_owner = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 524 | /* |
| 525 | * type, reclaim(boolean), offset, length, new_lock_owner(boolean) |
| 526 | */ |
| 527 | READ_BUF(28); |
| 528 | READ32(lock->lk_type); |
| 529 | if ((lock->lk_type < NFS4_READ_LT) || (lock->lk_type > NFS4_WRITEW_LT)) |
| 530 | goto xdr_error; |
| 531 | READ32(lock->lk_reclaim); |
| 532 | READ64(lock->lk_offset); |
| 533 | READ64(lock->lk_length); |
| 534 | READ32(lock->lk_is_new); |
| 535 | |
| 536 | if (lock->lk_is_new) { |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 537 | READ_BUF(4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 538 | READ32(lock->lk_new_open_seqid); |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 539 | status = nfsd4_decode_stateid(argp, &lock->lk_new_open_stateid); |
| 540 | if (status) |
| 541 | return status; |
| 542 | READ_BUF(8 + sizeof(clientid_t)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 543 | READ32(lock->lk_new_lock_seqid); |
| 544 | COPYMEM(&lock->lk_new_clientid, sizeof(clientid_t)); |
| 545 | READ32(lock->lk_new_owner.len); |
| 546 | READ_BUF(lock->lk_new_owner.len); |
| 547 | READMEM(lock->lk_new_owner.data, lock->lk_new_owner.len); |
| 548 | } else { |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 549 | status = nfsd4_decode_stateid(argp, &lock->lk_old_lock_stateid); |
| 550 | if (status) |
| 551 | return status; |
| 552 | READ_BUF(4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 553 | READ32(lock->lk_old_lock_seqid); |
| 554 | } |
| 555 | |
| 556 | DECODE_TAIL; |
| 557 | } |
| 558 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 559 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 560 | nfsd4_decode_lockt(struct nfsd4_compoundargs *argp, struct nfsd4_lockt *lockt) |
| 561 | { |
| 562 | DECODE_HEAD; |
| 563 | |
| 564 | READ_BUF(32); |
| 565 | READ32(lockt->lt_type); |
| 566 | if((lockt->lt_type < NFS4_READ_LT) || (lockt->lt_type > NFS4_WRITEW_LT)) |
| 567 | goto xdr_error; |
| 568 | READ64(lockt->lt_offset); |
| 569 | READ64(lockt->lt_length); |
| 570 | COPYMEM(&lockt->lt_clientid, 8); |
| 571 | READ32(lockt->lt_owner.len); |
| 572 | READ_BUF(lockt->lt_owner.len); |
| 573 | READMEM(lockt->lt_owner.data, lockt->lt_owner.len); |
| 574 | |
Andy Adamson | 60adfc5 | 2009-04-03 08:28:50 +0300 | [diff] [blame] | 575 | if (argp->minorversion && !zero_clientid(&lockt->lt_clientid)) |
| 576 | return nfserr_inval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 577 | DECODE_TAIL; |
| 578 | } |
| 579 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 580 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 581 | nfsd4_decode_locku(struct nfsd4_compoundargs *argp, struct nfsd4_locku *locku) |
| 582 | { |
| 583 | DECODE_HEAD; |
| 584 | |
| 585 | locku->lu_stateowner = NULL; |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 586 | READ_BUF(8); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 587 | READ32(locku->lu_type); |
| 588 | if ((locku->lu_type < NFS4_READ_LT) || (locku->lu_type > NFS4_WRITEW_LT)) |
| 589 | goto xdr_error; |
| 590 | READ32(locku->lu_seqid); |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 591 | status = nfsd4_decode_stateid(argp, &locku->lu_stateid); |
| 592 | if (status) |
| 593 | return status; |
| 594 | READ_BUF(16); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 595 | READ64(locku->lu_offset); |
| 596 | READ64(locku->lu_length); |
| 597 | |
| 598 | DECODE_TAIL; |
| 599 | } |
| 600 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 601 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 602 | nfsd4_decode_lookup(struct nfsd4_compoundargs *argp, struct nfsd4_lookup *lookup) |
| 603 | { |
| 604 | DECODE_HEAD; |
| 605 | |
| 606 | READ_BUF(4); |
| 607 | READ32(lookup->lo_len); |
| 608 | READ_BUF(lookup->lo_len); |
| 609 | SAVEMEM(lookup->lo_name, lookup->lo_len); |
| 610 | if ((status = check_filename(lookup->lo_name, lookup->lo_len, nfserr_noent))) |
| 611 | return status; |
| 612 | |
| 613 | DECODE_TAIL; |
| 614 | } |
| 615 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 616 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 617 | nfsd4_decode_open(struct nfsd4_compoundargs *argp, struct nfsd4_open *open) |
| 618 | { |
| 619 | DECODE_HEAD; |
| 620 | |
| 621 | memset(open->op_bmval, 0, sizeof(open->op_bmval)); |
| 622 | open->op_iattr.ia_valid = 0; |
| 623 | open->op_stateowner = NULL; |
| 624 | |
| 625 | /* seqid, share_access, share_deny, clientid, ownerlen */ |
| 626 | READ_BUF(16 + sizeof(clientid_t)); |
| 627 | READ32(open->op_seqid); |
| 628 | READ32(open->op_share_access); |
| 629 | READ32(open->op_share_deny); |
| 630 | COPYMEM(&open->op_clientid, sizeof(clientid_t)); |
| 631 | READ32(open->op_owner.len); |
| 632 | |
| 633 | /* owner, open_flag */ |
| 634 | READ_BUF(open->op_owner.len + 4); |
| 635 | SAVEMEM(open->op_owner.data, open->op_owner.len); |
| 636 | READ32(open->op_create); |
| 637 | switch (open->op_create) { |
| 638 | case NFS4_OPEN_NOCREATE: |
| 639 | break; |
| 640 | case NFS4_OPEN_CREATE: |
| 641 | READ_BUF(4); |
| 642 | READ32(open->op_createmode); |
| 643 | switch (open->op_createmode) { |
| 644 | case NFS4_CREATE_UNCHECKED: |
| 645 | case NFS4_CREATE_GUARDED: |
Benny Halevy | c0d6fc8 | 2009-04-03 08:29:05 +0300 | [diff] [blame] | 646 | status = nfsd4_decode_fattr(argp, open->op_bmval, |
Yu Zhiguo | 3c8e031 | 2009-05-16 16:22:31 +0800 | [diff] [blame] | 647 | &open->op_iattr, &open->op_acl); |
Benny Halevy | c0d6fc8 | 2009-04-03 08:29:05 +0300 | [diff] [blame] | 648 | if (status) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 649 | goto out; |
| 650 | break; |
| 651 | case NFS4_CREATE_EXCLUSIVE: |
| 652 | READ_BUF(8); |
| 653 | COPYMEM(open->op_verf.data, 8); |
| 654 | break; |
Benny Halevy | 79fb54a | 2009-04-03 08:29:17 +0300 | [diff] [blame] | 655 | case NFS4_CREATE_EXCLUSIVE4_1: |
| 656 | if (argp->minorversion < 1) |
| 657 | goto xdr_error; |
| 658 | READ_BUF(8); |
| 659 | COPYMEM(open->op_verf.data, 8); |
| 660 | status = nfsd4_decode_fattr(argp, open->op_bmval, |
Yu Zhiguo | 3c8e031 | 2009-05-16 16:22:31 +0800 | [diff] [blame] | 661 | &open->op_iattr, &open->op_acl); |
Benny Halevy | 79fb54a | 2009-04-03 08:29:17 +0300 | [diff] [blame] | 662 | if (status) |
| 663 | goto out; |
| 664 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 665 | default: |
| 666 | goto xdr_error; |
| 667 | } |
| 668 | break; |
| 669 | default: |
| 670 | goto xdr_error; |
| 671 | } |
| 672 | |
| 673 | /* open_claim */ |
| 674 | READ_BUF(4); |
| 675 | READ32(open->op_claim_type); |
| 676 | switch (open->op_claim_type) { |
| 677 | case NFS4_OPEN_CLAIM_NULL: |
| 678 | case NFS4_OPEN_CLAIM_DELEGATE_PREV: |
| 679 | READ_BUF(4); |
| 680 | READ32(open->op_fname.len); |
| 681 | READ_BUF(open->op_fname.len); |
| 682 | SAVEMEM(open->op_fname.data, open->op_fname.len); |
| 683 | if ((status = check_filename(open->op_fname.data, open->op_fname.len, nfserr_inval))) |
| 684 | return status; |
| 685 | break; |
| 686 | case NFS4_OPEN_CLAIM_PREVIOUS: |
| 687 | READ_BUF(4); |
| 688 | READ32(open->op_delegate_type); |
| 689 | break; |
| 690 | case NFS4_OPEN_CLAIM_DELEGATE_CUR: |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 691 | status = nfsd4_decode_stateid(argp, &open->op_delegate_stateid); |
| 692 | if (status) |
| 693 | return status; |
| 694 | READ_BUF(4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 695 | READ32(open->op_fname.len); |
| 696 | READ_BUF(open->op_fname.len); |
| 697 | SAVEMEM(open->op_fname.data, open->op_fname.len); |
| 698 | if ((status = check_filename(open->op_fname.data, open->op_fname.len, nfserr_inval))) |
| 699 | return status; |
| 700 | break; |
| 701 | default: |
| 702 | goto xdr_error; |
| 703 | } |
| 704 | |
| 705 | DECODE_TAIL; |
| 706 | } |
| 707 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 708 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 709 | nfsd4_decode_open_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_open_confirm *open_conf) |
| 710 | { |
| 711 | DECODE_HEAD; |
| 712 | |
| 713 | open_conf->oc_stateowner = NULL; |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 714 | status = nfsd4_decode_stateid(argp, &open_conf->oc_req_stateid); |
| 715 | if (status) |
| 716 | return status; |
| 717 | READ_BUF(4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 718 | READ32(open_conf->oc_seqid); |
| 719 | |
| 720 | DECODE_TAIL; |
| 721 | } |
| 722 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 723 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 724 | nfsd4_decode_open_downgrade(struct nfsd4_compoundargs *argp, struct nfsd4_open_downgrade *open_down) |
| 725 | { |
| 726 | DECODE_HEAD; |
| 727 | |
| 728 | open_down->od_stateowner = NULL; |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 729 | status = nfsd4_decode_stateid(argp, &open_down->od_stateid); |
| 730 | if (status) |
| 731 | return status; |
| 732 | READ_BUF(12); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 733 | READ32(open_down->od_seqid); |
| 734 | READ32(open_down->od_share_access); |
| 735 | READ32(open_down->od_share_deny); |
| 736 | |
| 737 | DECODE_TAIL; |
| 738 | } |
| 739 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 740 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 741 | nfsd4_decode_putfh(struct nfsd4_compoundargs *argp, struct nfsd4_putfh *putfh) |
| 742 | { |
| 743 | DECODE_HEAD; |
| 744 | |
| 745 | READ_BUF(4); |
| 746 | READ32(putfh->pf_fhlen); |
| 747 | if (putfh->pf_fhlen > NFS4_FHSIZE) |
| 748 | goto xdr_error; |
| 749 | READ_BUF(putfh->pf_fhlen); |
| 750 | SAVEMEM(putfh->pf_fhval, putfh->pf_fhlen); |
| 751 | |
| 752 | DECODE_TAIL; |
| 753 | } |
| 754 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 755 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 756 | nfsd4_decode_read(struct nfsd4_compoundargs *argp, struct nfsd4_read *read) |
| 757 | { |
| 758 | DECODE_HEAD; |
| 759 | |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 760 | status = nfsd4_decode_stateid(argp, &read->rd_stateid); |
| 761 | if (status) |
| 762 | return status; |
| 763 | READ_BUF(12); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 764 | READ64(read->rd_offset); |
| 765 | READ32(read->rd_length); |
| 766 | |
| 767 | DECODE_TAIL; |
| 768 | } |
| 769 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 770 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 771 | nfsd4_decode_readdir(struct nfsd4_compoundargs *argp, struct nfsd4_readdir *readdir) |
| 772 | { |
| 773 | DECODE_HEAD; |
| 774 | |
| 775 | READ_BUF(24); |
| 776 | READ64(readdir->rd_cookie); |
| 777 | COPYMEM(readdir->rd_verf.data, sizeof(readdir->rd_verf.data)); |
| 778 | READ32(readdir->rd_dircount); /* just in case you needed a useless field... */ |
| 779 | READ32(readdir->rd_maxcount); |
| 780 | if ((status = nfsd4_decode_bitmap(argp, readdir->rd_bmval))) |
| 781 | goto out; |
| 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_remove(struct nfsd4_compoundargs *argp, struct nfsd4_remove *remove) |
| 788 | { |
| 789 | DECODE_HEAD; |
| 790 | |
| 791 | READ_BUF(4); |
| 792 | READ32(remove->rm_namelen); |
| 793 | READ_BUF(remove->rm_namelen); |
| 794 | SAVEMEM(remove->rm_name, remove->rm_namelen); |
| 795 | if ((status = check_filename(remove->rm_name, remove->rm_namelen, nfserr_noent))) |
| 796 | return status; |
| 797 | |
| 798 | DECODE_TAIL; |
| 799 | } |
| 800 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 801 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 802 | nfsd4_decode_rename(struct nfsd4_compoundargs *argp, struct nfsd4_rename *rename) |
| 803 | { |
| 804 | DECODE_HEAD; |
| 805 | |
| 806 | READ_BUF(4); |
| 807 | READ32(rename->rn_snamelen); |
| 808 | READ_BUF(rename->rn_snamelen + 4); |
| 809 | SAVEMEM(rename->rn_sname, rename->rn_snamelen); |
| 810 | READ32(rename->rn_tnamelen); |
| 811 | READ_BUF(rename->rn_tnamelen); |
| 812 | SAVEMEM(rename->rn_tname, rename->rn_tnamelen); |
| 813 | if ((status = check_filename(rename->rn_sname, rename->rn_snamelen, nfserr_noent))) |
| 814 | return status; |
| 815 | if ((status = check_filename(rename->rn_tname, rename->rn_tnamelen, nfserr_inval))) |
| 816 | return status; |
| 817 | |
| 818 | DECODE_TAIL; |
| 819 | } |
| 820 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 821 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 822 | nfsd4_decode_renew(struct nfsd4_compoundargs *argp, clientid_t *clientid) |
| 823 | { |
| 824 | DECODE_HEAD; |
| 825 | |
| 826 | READ_BUF(sizeof(clientid_t)); |
| 827 | COPYMEM(clientid, sizeof(clientid_t)); |
| 828 | |
| 829 | DECODE_TAIL; |
| 830 | } |
| 831 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 832 | static __be32 |
Andy Adamson | dcb488a3 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 833 | nfsd4_decode_secinfo(struct nfsd4_compoundargs *argp, |
| 834 | struct nfsd4_secinfo *secinfo) |
| 835 | { |
| 836 | DECODE_HEAD; |
| 837 | |
| 838 | READ_BUF(4); |
| 839 | READ32(secinfo->si_namelen); |
| 840 | READ_BUF(secinfo->si_namelen); |
| 841 | SAVEMEM(secinfo->si_name, secinfo->si_namelen); |
| 842 | status = check_filename(secinfo->si_name, secinfo->si_namelen, |
| 843 | nfserr_noent); |
| 844 | if (status) |
| 845 | return status; |
| 846 | DECODE_TAIL; |
| 847 | } |
| 848 | |
| 849 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 850 | nfsd4_decode_setattr(struct nfsd4_compoundargs *argp, struct nfsd4_setattr *setattr) |
| 851 | { |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 852 | __be32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 853 | |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 854 | status = nfsd4_decode_stateid(argp, &setattr->sa_stateid); |
| 855 | if (status) |
| 856 | return status; |
Yu Zhiguo | 3c8e031 | 2009-05-16 16:22:31 +0800 | [diff] [blame] | 857 | return nfsd4_decode_fattr(argp, setattr->sa_bmval, &setattr->sa_iattr, |
| 858 | &setattr->sa_acl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 859 | } |
| 860 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 861 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 862 | nfsd4_decode_setclientid(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid *setclientid) |
| 863 | { |
| 864 | DECODE_HEAD; |
| 865 | |
| 866 | READ_BUF(12); |
| 867 | COPYMEM(setclientid->se_verf.data, 8); |
| 868 | READ32(setclientid->se_namelen); |
| 869 | |
| 870 | READ_BUF(setclientid->se_namelen + 8); |
| 871 | SAVEMEM(setclientid->se_name, setclientid->se_namelen); |
| 872 | READ32(setclientid->se_callback_prog); |
| 873 | READ32(setclientid->se_callback_netid_len); |
| 874 | |
| 875 | READ_BUF(setclientid->se_callback_netid_len + 4); |
| 876 | SAVEMEM(setclientid->se_callback_netid_val, setclientid->se_callback_netid_len); |
| 877 | READ32(setclientid->se_callback_addr_len); |
| 878 | |
| 879 | READ_BUF(setclientid->se_callback_addr_len + 4); |
| 880 | SAVEMEM(setclientid->se_callback_addr_val, setclientid->se_callback_addr_len); |
| 881 | READ32(setclientid->se_callback_ident); |
| 882 | |
| 883 | DECODE_TAIL; |
| 884 | } |
| 885 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 886 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 887 | nfsd4_decode_setclientid_confirm(struct nfsd4_compoundargs *argp, struct nfsd4_setclientid_confirm *scd_c) |
| 888 | { |
| 889 | DECODE_HEAD; |
| 890 | |
| 891 | READ_BUF(8 + sizeof(nfs4_verifier)); |
| 892 | COPYMEM(&scd_c->sc_clientid, 8); |
| 893 | COPYMEM(&scd_c->sc_confirm, sizeof(nfs4_verifier)); |
| 894 | |
| 895 | DECODE_TAIL; |
| 896 | } |
| 897 | |
| 898 | /* Also used for NVERIFY */ |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 899 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 900 | nfsd4_decode_verify(struct nfsd4_compoundargs *argp, struct nfsd4_verify *verify) |
| 901 | { |
| 902 | #if 0 |
| 903 | struct nfsd4_compoundargs save = { |
| 904 | .p = argp->p, |
| 905 | .end = argp->end, |
| 906 | .rqstp = argp->rqstp, |
| 907 | }; |
| 908 | u32 ve_bmval[2]; |
| 909 | struct iattr ve_iattr; /* request */ |
| 910 | struct nfs4_acl *ve_acl; /* request */ |
| 911 | #endif |
| 912 | DECODE_HEAD; |
| 913 | |
| 914 | if ((status = nfsd4_decode_bitmap(argp, verify->ve_bmval))) |
| 915 | goto out; |
| 916 | |
| 917 | /* For convenience's sake, we compare raw xdr'd attributes in |
| 918 | * nfsd4_proc_verify; however we still decode here just to return |
| 919 | * correct error in case of bad xdr. */ |
| 920 | #if 0 |
| 921 | status = nfsd4_decode_fattr(ve_bmval, &ve_iattr, &ve_acl); |
| 922 | if (status == nfserr_inval) { |
| 923 | status = nfserrno(status); |
| 924 | goto out; |
| 925 | } |
| 926 | #endif |
| 927 | READ_BUF(4); |
| 928 | READ32(verify->ve_attrlen); |
| 929 | READ_BUF(verify->ve_attrlen); |
| 930 | SAVEMEM(verify->ve_attrval, verify->ve_attrlen); |
| 931 | |
| 932 | DECODE_TAIL; |
| 933 | } |
| 934 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 935 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 936 | nfsd4_decode_write(struct nfsd4_compoundargs *argp, struct nfsd4_write *write) |
| 937 | { |
| 938 | int avail; |
| 939 | int v; |
| 940 | int len; |
| 941 | DECODE_HEAD; |
| 942 | |
Benny Halevy | e31a1b6 | 2008-08-12 20:46:18 +0300 | [diff] [blame] | 943 | status = nfsd4_decode_stateid(argp, &write->wr_stateid); |
| 944 | if (status) |
| 945 | return status; |
| 946 | READ_BUF(16); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 947 | READ64(write->wr_offset); |
| 948 | READ32(write->wr_stable_how); |
| 949 | if (write->wr_stable_how > 2) |
| 950 | goto xdr_error; |
| 951 | READ32(write->wr_buflen); |
| 952 | |
| 953 | /* Sorry .. no magic macros for this.. * |
| 954 | * READ_BUF(write->wr_buflen); |
| 955 | * SAVEMEM(write->wr_buf, write->wr_buflen); |
| 956 | */ |
| 957 | avail = (char*)argp->end - (char*)argp->p; |
| 958 | if (avail + argp->pagelen < write->wr_buflen) { |
Chuck Lever | 817cb9d | 2007-09-11 18:01:20 -0400 | [diff] [blame] | 959 | dprintk("NFSD: xdr error (%s:%d)\n", |
| 960 | __FILE__, __LINE__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 961 | goto xdr_error; |
| 962 | } |
NeilBrown | 3cc03b1 | 2006-10-04 02:15:47 -0700 | [diff] [blame] | 963 | argp->rqstp->rq_vec[0].iov_base = p; |
| 964 | argp->rqstp->rq_vec[0].iov_len = avail; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 965 | v = 0; |
| 966 | len = write->wr_buflen; |
NeilBrown | 3cc03b1 | 2006-10-04 02:15:47 -0700 | [diff] [blame] | 967 | while (len > argp->rqstp->rq_vec[v].iov_len) { |
| 968 | len -= argp->rqstp->rq_vec[v].iov_len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 969 | v++; |
NeilBrown | 3cc03b1 | 2006-10-04 02:15:47 -0700 | [diff] [blame] | 970 | argp->rqstp->rq_vec[v].iov_base = page_address(argp->pagelist[0]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 971 | argp->pagelist++; |
| 972 | if (argp->pagelen >= PAGE_SIZE) { |
NeilBrown | 3cc03b1 | 2006-10-04 02:15:47 -0700 | [diff] [blame] | 973 | argp->rqstp->rq_vec[v].iov_len = PAGE_SIZE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 974 | argp->pagelen -= PAGE_SIZE; |
| 975 | } else { |
NeilBrown | 3cc03b1 | 2006-10-04 02:15:47 -0700 | [diff] [blame] | 976 | argp->rqstp->rq_vec[v].iov_len = argp->pagelen; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 977 | argp->pagelen -= len; |
| 978 | } |
| 979 | } |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 980 | argp->end = (__be32*) (argp->rqstp->rq_vec[v].iov_base + argp->rqstp->rq_vec[v].iov_len); |
| 981 | 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] | 982 | argp->rqstp->rq_vec[v].iov_len = len; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 983 | write->wr_vlen = v+1; |
| 984 | |
| 985 | DECODE_TAIL; |
| 986 | } |
| 987 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 988 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 989 | nfsd4_decode_release_lockowner(struct nfsd4_compoundargs *argp, struct nfsd4_release_lockowner *rlockowner) |
| 990 | { |
| 991 | DECODE_HEAD; |
| 992 | |
| 993 | READ_BUF(12); |
| 994 | COPYMEM(&rlockowner->rl_clientid, sizeof(clientid_t)); |
| 995 | READ32(rlockowner->rl_owner.len); |
| 996 | READ_BUF(rlockowner->rl_owner.len); |
| 997 | READMEM(rlockowner->rl_owner.data, rlockowner->rl_owner.len); |
| 998 | |
Andy Adamson | 60adfc5 | 2009-04-03 08:28:50 +0300 | [diff] [blame] | 999 | if (argp->minorversion && !zero_clientid(&rlockowner->rl_clientid)) |
| 1000 | return nfserr_inval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1001 | DECODE_TAIL; |
| 1002 | } |
| 1003 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1004 | static __be32 |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 1005 | nfsd4_decode_exchange_id(struct nfsd4_compoundargs *argp, |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 1006 | struct nfsd4_exchange_id *exid) |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 1007 | { |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 1008 | int dummy; |
| 1009 | DECODE_HEAD; |
| 1010 | |
| 1011 | READ_BUF(NFS4_VERIFIER_SIZE); |
| 1012 | COPYMEM(exid->verifier.data, NFS4_VERIFIER_SIZE); |
| 1013 | |
| 1014 | READ_BUF(4); |
| 1015 | READ32(exid->clname.len); |
| 1016 | |
| 1017 | READ_BUF(exid->clname.len); |
| 1018 | SAVEMEM(exid->clname.data, exid->clname.len); |
| 1019 | |
| 1020 | READ_BUF(4); |
| 1021 | READ32(exid->flags); |
| 1022 | |
| 1023 | /* Ignore state_protect4_a */ |
| 1024 | READ_BUF(4); |
| 1025 | READ32(exid->spa_how); |
| 1026 | switch (exid->spa_how) { |
| 1027 | case SP4_NONE: |
| 1028 | break; |
| 1029 | case SP4_MACH_CRED: |
| 1030 | /* spo_must_enforce */ |
| 1031 | READ_BUF(4); |
| 1032 | READ32(dummy); |
| 1033 | READ_BUF(dummy * 4); |
| 1034 | p += dummy; |
| 1035 | |
| 1036 | /* spo_must_allow */ |
| 1037 | READ_BUF(4); |
| 1038 | READ32(dummy); |
| 1039 | READ_BUF(dummy * 4); |
| 1040 | p += dummy; |
| 1041 | break; |
| 1042 | case SP4_SSV: |
| 1043 | /* ssp_ops */ |
| 1044 | READ_BUF(4); |
| 1045 | READ32(dummy); |
| 1046 | READ_BUF(dummy * 4); |
| 1047 | p += dummy; |
| 1048 | |
| 1049 | READ_BUF(4); |
| 1050 | READ32(dummy); |
| 1051 | READ_BUF(dummy * 4); |
| 1052 | p += dummy; |
| 1053 | |
| 1054 | /* ssp_hash_algs<> */ |
| 1055 | READ_BUF(4); |
| 1056 | READ32(dummy); |
| 1057 | READ_BUF(dummy); |
| 1058 | p += XDR_QUADLEN(dummy); |
| 1059 | |
| 1060 | /* ssp_encr_algs<> */ |
| 1061 | READ_BUF(4); |
| 1062 | READ32(dummy); |
| 1063 | READ_BUF(dummy); |
| 1064 | p += XDR_QUADLEN(dummy); |
| 1065 | |
| 1066 | /* ssp_window and ssp_num_gss_handles */ |
| 1067 | READ_BUF(8); |
| 1068 | READ32(dummy); |
| 1069 | READ32(dummy); |
| 1070 | break; |
| 1071 | default: |
| 1072 | goto xdr_error; |
| 1073 | } |
| 1074 | |
| 1075 | /* Ignore Implementation ID */ |
| 1076 | READ_BUF(4); /* nfs_impl_id4 array length */ |
| 1077 | READ32(dummy); |
| 1078 | |
| 1079 | if (dummy > 1) |
| 1080 | goto xdr_error; |
| 1081 | |
| 1082 | if (dummy == 1) { |
| 1083 | /* nii_domain */ |
| 1084 | READ_BUF(4); |
| 1085 | READ32(dummy); |
| 1086 | READ_BUF(dummy); |
| 1087 | p += XDR_QUADLEN(dummy); |
| 1088 | |
| 1089 | /* nii_name */ |
| 1090 | READ_BUF(4); |
| 1091 | READ32(dummy); |
| 1092 | READ_BUF(dummy); |
| 1093 | p += XDR_QUADLEN(dummy); |
| 1094 | |
| 1095 | /* nii_date */ |
| 1096 | READ_BUF(12); |
| 1097 | p += 3; |
| 1098 | } |
| 1099 | DECODE_TAIL; |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 1100 | } |
| 1101 | |
| 1102 | static __be32 |
| 1103 | nfsd4_decode_create_session(struct nfsd4_compoundargs *argp, |
| 1104 | struct nfsd4_create_session *sess) |
| 1105 | { |
Andy Adamson | ec6b5d7 | 2009-04-03 08:28:28 +0300 | [diff] [blame] | 1106 | DECODE_HEAD; |
| 1107 | |
| 1108 | u32 dummy; |
| 1109 | char *machine_name; |
| 1110 | int i; |
| 1111 | int nr_secflavs; |
| 1112 | |
| 1113 | READ_BUF(16); |
| 1114 | COPYMEM(&sess->clientid, 8); |
| 1115 | READ32(sess->seqid); |
| 1116 | READ32(sess->flags); |
| 1117 | |
| 1118 | /* Fore channel attrs */ |
| 1119 | READ_BUF(28); |
| 1120 | READ32(dummy); /* headerpadsz is always 0 */ |
| 1121 | READ32(sess->fore_channel.maxreq_sz); |
| 1122 | READ32(sess->fore_channel.maxresp_sz); |
| 1123 | READ32(sess->fore_channel.maxresp_cached); |
| 1124 | READ32(sess->fore_channel.maxops); |
| 1125 | READ32(sess->fore_channel.maxreqs); |
| 1126 | READ32(sess->fore_channel.nr_rdma_attrs); |
| 1127 | if (sess->fore_channel.nr_rdma_attrs == 1) { |
| 1128 | READ_BUF(4); |
| 1129 | READ32(sess->fore_channel.rdma_attrs); |
| 1130 | } else if (sess->fore_channel.nr_rdma_attrs > 1) { |
| 1131 | dprintk("Too many fore channel attr bitmaps!\n"); |
| 1132 | goto xdr_error; |
| 1133 | } |
| 1134 | |
| 1135 | /* Back channel attrs */ |
| 1136 | READ_BUF(28); |
| 1137 | READ32(dummy); /* headerpadsz is always 0 */ |
| 1138 | READ32(sess->back_channel.maxreq_sz); |
| 1139 | READ32(sess->back_channel.maxresp_sz); |
| 1140 | READ32(sess->back_channel.maxresp_cached); |
| 1141 | READ32(sess->back_channel.maxops); |
| 1142 | READ32(sess->back_channel.maxreqs); |
| 1143 | READ32(sess->back_channel.nr_rdma_attrs); |
| 1144 | if (sess->back_channel.nr_rdma_attrs == 1) { |
| 1145 | READ_BUF(4); |
| 1146 | READ32(sess->back_channel.rdma_attrs); |
| 1147 | } else if (sess->back_channel.nr_rdma_attrs > 1) { |
| 1148 | dprintk("Too many back channel attr bitmaps!\n"); |
| 1149 | goto xdr_error; |
| 1150 | } |
| 1151 | |
| 1152 | READ_BUF(8); |
| 1153 | READ32(sess->callback_prog); |
| 1154 | |
| 1155 | /* callback_sec_params4 */ |
| 1156 | READ32(nr_secflavs); |
| 1157 | for (i = 0; i < nr_secflavs; ++i) { |
| 1158 | READ_BUF(4); |
| 1159 | READ32(dummy); |
| 1160 | switch (dummy) { |
| 1161 | case RPC_AUTH_NULL: |
| 1162 | /* Nothing to read */ |
| 1163 | break; |
| 1164 | case RPC_AUTH_UNIX: |
| 1165 | READ_BUF(8); |
| 1166 | /* stamp */ |
| 1167 | READ32(dummy); |
| 1168 | |
| 1169 | /* machine name */ |
| 1170 | READ32(dummy); |
| 1171 | READ_BUF(dummy); |
| 1172 | SAVEMEM(machine_name, dummy); |
| 1173 | |
| 1174 | /* uid, gid */ |
| 1175 | READ_BUF(8); |
| 1176 | READ32(sess->uid); |
| 1177 | READ32(sess->gid); |
| 1178 | |
| 1179 | /* more gids */ |
| 1180 | READ_BUF(4); |
| 1181 | READ32(dummy); |
| 1182 | READ_BUF(dummy * 4); |
| 1183 | for (i = 0; i < dummy; ++i) |
| 1184 | READ32(dummy); |
| 1185 | break; |
| 1186 | case RPC_AUTH_GSS: |
| 1187 | dprintk("RPC_AUTH_GSS callback secflavor " |
| 1188 | "not supported!\n"); |
| 1189 | READ_BUF(8); |
| 1190 | /* gcbp_service */ |
| 1191 | READ32(dummy); |
| 1192 | /* gcbp_handle_from_server */ |
| 1193 | READ32(dummy); |
| 1194 | READ_BUF(dummy); |
| 1195 | p += XDR_QUADLEN(dummy); |
| 1196 | /* gcbp_handle_from_client */ |
| 1197 | READ_BUF(4); |
| 1198 | READ32(dummy); |
| 1199 | READ_BUF(dummy); |
| 1200 | p += XDR_QUADLEN(dummy); |
| 1201 | break; |
| 1202 | default: |
| 1203 | dprintk("Illegal callback secflavor\n"); |
| 1204 | return nfserr_inval; |
| 1205 | } |
| 1206 | } |
| 1207 | DECODE_TAIL; |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 1208 | } |
| 1209 | |
| 1210 | static __be32 |
| 1211 | nfsd4_decode_destroy_session(struct nfsd4_compoundargs *argp, |
| 1212 | struct nfsd4_destroy_session *destroy_session) |
| 1213 | { |
Benny Halevy | e10e0cf | 2009-04-03 08:28:38 +0300 | [diff] [blame] | 1214 | DECODE_HEAD; |
| 1215 | READ_BUF(NFS4_MAX_SESSIONID_LEN); |
| 1216 | COPYMEM(destroy_session->sessionid.data, NFS4_MAX_SESSIONID_LEN); |
| 1217 | |
| 1218 | DECODE_TAIL; |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 1219 | } |
| 1220 | |
| 1221 | static __be32 |
| 1222 | nfsd4_decode_sequence(struct nfsd4_compoundargs *argp, |
| 1223 | struct nfsd4_sequence *seq) |
| 1224 | { |
Benny Halevy | b85d4c0 | 2009-04-03 08:28:08 +0300 | [diff] [blame] | 1225 | DECODE_HEAD; |
| 1226 | |
| 1227 | READ_BUF(NFS4_MAX_SESSIONID_LEN + 16); |
| 1228 | COPYMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN); |
| 1229 | READ32(seq->seqid); |
| 1230 | READ32(seq->slotid); |
| 1231 | READ32(seq->maxslots); |
| 1232 | READ32(seq->cachethis); |
| 1233 | |
| 1234 | DECODE_TAIL; |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 1235 | } |
| 1236 | |
J. Bruce Fields | 4dc6ec0 | 2010-04-19 15:11:28 -0400 | [diff] [blame] | 1237 | static __be32 nfsd4_decode_reclaim_complete(struct nfsd4_compoundargs *argp, struct nfsd4_reclaim_complete *rc) |
| 1238 | { |
| 1239 | DECODE_HEAD; |
| 1240 | |
| 1241 | READ_BUF(4); |
| 1242 | READ32(rc->rca_one_fs); |
| 1243 | |
| 1244 | DECODE_TAIL; |
| 1245 | } |
| 1246 | |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 1247 | static __be32 |
Benny Halevy | 347e0ad | 2008-07-02 11:13:41 +0300 | [diff] [blame] | 1248 | nfsd4_decode_noop(struct nfsd4_compoundargs *argp, void *p) |
| 1249 | { |
| 1250 | return nfs_ok; |
| 1251 | } |
| 1252 | |
Benny Halevy | 3c375c6 | 2008-07-02 11:14:01 +0300 | [diff] [blame] | 1253 | static __be32 |
| 1254 | nfsd4_decode_notsupp(struct nfsd4_compoundargs *argp, void *p) |
| 1255 | { |
Benny Halevy | 1e685ec | 2009-03-04 23:06:06 +0200 | [diff] [blame] | 1256 | return nfserr_notsupp; |
Benny Halevy | 3c375c6 | 2008-07-02 11:14:01 +0300 | [diff] [blame] | 1257 | } |
| 1258 | |
Benny Halevy | 347e0ad | 2008-07-02 11:13:41 +0300 | [diff] [blame] | 1259 | typedef __be32(*nfsd4_dec)(struct nfsd4_compoundargs *argp, void *); |
| 1260 | |
| 1261 | static nfsd4_dec nfsd4_dec_ops[] = { |
J. Bruce Fields | ad1060c | 2008-07-18 15:04:16 -0400 | [diff] [blame] | 1262 | [OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access, |
| 1263 | [OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close, |
| 1264 | [OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit, |
| 1265 | [OP_CREATE] = (nfsd4_dec)nfsd4_decode_create, |
| 1266 | [OP_DELEGPURGE] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1267 | [OP_DELEGRETURN] = (nfsd4_dec)nfsd4_decode_delegreturn, |
| 1268 | [OP_GETATTR] = (nfsd4_dec)nfsd4_decode_getattr, |
| 1269 | [OP_GETFH] = (nfsd4_dec)nfsd4_decode_noop, |
| 1270 | [OP_LINK] = (nfsd4_dec)nfsd4_decode_link, |
| 1271 | [OP_LOCK] = (nfsd4_dec)nfsd4_decode_lock, |
| 1272 | [OP_LOCKT] = (nfsd4_dec)nfsd4_decode_lockt, |
| 1273 | [OP_LOCKU] = (nfsd4_dec)nfsd4_decode_locku, |
| 1274 | [OP_LOOKUP] = (nfsd4_dec)nfsd4_decode_lookup, |
| 1275 | [OP_LOOKUPP] = (nfsd4_dec)nfsd4_decode_noop, |
| 1276 | [OP_NVERIFY] = (nfsd4_dec)nfsd4_decode_verify, |
| 1277 | [OP_OPEN] = (nfsd4_dec)nfsd4_decode_open, |
| 1278 | [OP_OPENATTR] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1279 | [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_open_confirm, |
| 1280 | [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade, |
| 1281 | [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh, |
J. Bruce Fields | a1c8c4d | 2009-03-09 12:17:29 -0400 | [diff] [blame] | 1282 | [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_noop, |
J. Bruce Fields | ad1060c | 2008-07-18 15:04:16 -0400 | [diff] [blame] | 1283 | [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop, |
| 1284 | [OP_READ] = (nfsd4_dec)nfsd4_decode_read, |
| 1285 | [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir, |
| 1286 | [OP_READLINK] = (nfsd4_dec)nfsd4_decode_noop, |
| 1287 | [OP_REMOVE] = (nfsd4_dec)nfsd4_decode_remove, |
| 1288 | [OP_RENAME] = (nfsd4_dec)nfsd4_decode_rename, |
| 1289 | [OP_RENEW] = (nfsd4_dec)nfsd4_decode_renew, |
| 1290 | [OP_RESTOREFH] = (nfsd4_dec)nfsd4_decode_noop, |
| 1291 | [OP_SAVEFH] = (nfsd4_dec)nfsd4_decode_noop, |
| 1292 | [OP_SECINFO] = (nfsd4_dec)nfsd4_decode_secinfo, |
| 1293 | [OP_SETATTR] = (nfsd4_dec)nfsd4_decode_setattr, |
| 1294 | [OP_SETCLIENTID] = (nfsd4_dec)nfsd4_decode_setclientid, |
| 1295 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_dec)nfsd4_decode_setclientid_confirm, |
| 1296 | [OP_VERIFY] = (nfsd4_dec)nfsd4_decode_verify, |
| 1297 | [OP_WRITE] = (nfsd4_dec)nfsd4_decode_write, |
| 1298 | [OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_release_lockowner, |
Benny Halevy | 347e0ad | 2008-07-02 11:13:41 +0300 | [diff] [blame] | 1299 | }; |
| 1300 | |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 1301 | static nfsd4_dec nfsd41_dec_ops[] = { |
Randy Dunlap | 9064caa | 2009-04-28 16:48:25 -0700 | [diff] [blame] | 1302 | [OP_ACCESS] = (nfsd4_dec)nfsd4_decode_access, |
| 1303 | [OP_CLOSE] = (nfsd4_dec)nfsd4_decode_close, |
| 1304 | [OP_COMMIT] = (nfsd4_dec)nfsd4_decode_commit, |
| 1305 | [OP_CREATE] = (nfsd4_dec)nfsd4_decode_create, |
| 1306 | [OP_DELEGPURGE] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1307 | [OP_DELEGRETURN] = (nfsd4_dec)nfsd4_decode_delegreturn, |
| 1308 | [OP_GETATTR] = (nfsd4_dec)nfsd4_decode_getattr, |
| 1309 | [OP_GETFH] = (nfsd4_dec)nfsd4_decode_noop, |
| 1310 | [OP_LINK] = (nfsd4_dec)nfsd4_decode_link, |
| 1311 | [OP_LOCK] = (nfsd4_dec)nfsd4_decode_lock, |
| 1312 | [OP_LOCKT] = (nfsd4_dec)nfsd4_decode_lockt, |
| 1313 | [OP_LOCKU] = (nfsd4_dec)nfsd4_decode_locku, |
| 1314 | [OP_LOOKUP] = (nfsd4_dec)nfsd4_decode_lookup, |
| 1315 | [OP_LOOKUPP] = (nfsd4_dec)nfsd4_decode_noop, |
| 1316 | [OP_NVERIFY] = (nfsd4_dec)nfsd4_decode_verify, |
| 1317 | [OP_OPEN] = (nfsd4_dec)nfsd4_decode_open, |
| 1318 | [OP_OPENATTR] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1319 | [OP_OPEN_CONFIRM] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1320 | [OP_OPEN_DOWNGRADE] = (nfsd4_dec)nfsd4_decode_open_downgrade, |
| 1321 | [OP_PUTFH] = (nfsd4_dec)nfsd4_decode_putfh, |
| 1322 | [OP_PUTPUBFH] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1323 | [OP_PUTROOTFH] = (nfsd4_dec)nfsd4_decode_noop, |
| 1324 | [OP_READ] = (nfsd4_dec)nfsd4_decode_read, |
| 1325 | [OP_READDIR] = (nfsd4_dec)nfsd4_decode_readdir, |
| 1326 | [OP_READLINK] = (nfsd4_dec)nfsd4_decode_noop, |
| 1327 | [OP_REMOVE] = (nfsd4_dec)nfsd4_decode_remove, |
| 1328 | [OP_RENAME] = (nfsd4_dec)nfsd4_decode_rename, |
| 1329 | [OP_RENEW] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1330 | [OP_RESTOREFH] = (nfsd4_dec)nfsd4_decode_noop, |
| 1331 | [OP_SAVEFH] = (nfsd4_dec)nfsd4_decode_noop, |
| 1332 | [OP_SECINFO] = (nfsd4_dec)nfsd4_decode_secinfo, |
| 1333 | [OP_SETATTR] = (nfsd4_dec)nfsd4_decode_setattr, |
| 1334 | [OP_SETCLIENTID] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1335 | [OP_SETCLIENTID_CONFIRM]= (nfsd4_dec)nfsd4_decode_notsupp, |
| 1336 | [OP_VERIFY] = (nfsd4_dec)nfsd4_decode_verify, |
| 1337 | [OP_WRITE] = (nfsd4_dec)nfsd4_decode_write, |
| 1338 | [OP_RELEASE_LOCKOWNER] = (nfsd4_dec)nfsd4_decode_notsupp, |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 1339 | |
| 1340 | /* new operations for NFSv4.1 */ |
Randy Dunlap | 9064caa | 2009-04-28 16:48:25 -0700 | [diff] [blame] | 1341 | [OP_BACKCHANNEL_CTL] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1342 | [OP_BIND_CONN_TO_SESSION]= (nfsd4_dec)nfsd4_decode_notsupp, |
| 1343 | [OP_EXCHANGE_ID] = (nfsd4_dec)nfsd4_decode_exchange_id, |
| 1344 | [OP_CREATE_SESSION] = (nfsd4_dec)nfsd4_decode_create_session, |
| 1345 | [OP_DESTROY_SESSION] = (nfsd4_dec)nfsd4_decode_destroy_session, |
| 1346 | [OP_FREE_STATEID] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1347 | [OP_GET_DIR_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1348 | [OP_GETDEVICEINFO] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1349 | [OP_GETDEVICELIST] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1350 | [OP_LAYOUTCOMMIT] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1351 | [OP_LAYOUTGET] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1352 | [OP_LAYOUTRETURN] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1353 | [OP_SECINFO_NO_NAME] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1354 | [OP_SEQUENCE] = (nfsd4_dec)nfsd4_decode_sequence, |
| 1355 | [OP_SET_SSV] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1356 | [OP_TEST_STATEID] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1357 | [OP_WANT_DELEGATION] = (nfsd4_dec)nfsd4_decode_notsupp, |
| 1358 | [OP_DESTROY_CLIENTID] = (nfsd4_dec)nfsd4_decode_notsupp, |
J. Bruce Fields | 4dc6ec0 | 2010-04-19 15:11:28 -0400 | [diff] [blame] | 1359 | [OP_RECLAIM_COMPLETE] = (nfsd4_dec)nfsd4_decode_reclaim_complete, |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 1360 | }; |
| 1361 | |
Benny Halevy | f2feb96 | 2008-07-02 11:14:22 +0300 | [diff] [blame] | 1362 | struct nfsd4_minorversion_ops { |
| 1363 | nfsd4_dec *decoders; |
| 1364 | int nops; |
| 1365 | }; |
| 1366 | |
| 1367 | static struct nfsd4_minorversion_ops nfsd4_minorversion[] = { |
J. Bruce Fields | ad1060c | 2008-07-18 15:04:16 -0400 | [diff] [blame] | 1368 | [0] = { nfsd4_dec_ops, ARRAY_SIZE(nfsd4_dec_ops) }, |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 1369 | [1] = { nfsd41_dec_ops, ARRAY_SIZE(nfsd41_dec_ops) }, |
Benny Halevy | f2feb96 | 2008-07-02 11:14:22 +0300 | [diff] [blame] | 1370 | }; |
| 1371 | |
Benny Halevy | 347e0ad | 2008-07-02 11:13:41 +0300 | [diff] [blame] | 1372 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1373 | nfsd4_decode_compound(struct nfsd4_compoundargs *argp) |
| 1374 | { |
| 1375 | DECODE_HEAD; |
| 1376 | struct nfsd4_op *op; |
Benny Halevy | f2feb96 | 2008-07-02 11:14:22 +0300 | [diff] [blame] | 1377 | struct nfsd4_minorversion_ops *ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1378 | int i; |
| 1379 | |
| 1380 | /* |
| 1381 | * XXX: According to spec, we should check the tag |
| 1382 | * for UTF-8 compliance. I'm postponing this for |
| 1383 | * now because it seems that some clients do use |
| 1384 | * binary tags. |
| 1385 | */ |
| 1386 | READ_BUF(4); |
| 1387 | READ32(argp->taglen); |
| 1388 | READ_BUF(argp->taglen + 8); |
| 1389 | SAVEMEM(argp->tag, argp->taglen); |
| 1390 | READ32(argp->minorversion); |
| 1391 | READ32(argp->opcnt); |
| 1392 | |
| 1393 | if (argp->taglen > NFSD4_MAX_TAGLEN) |
| 1394 | goto xdr_error; |
| 1395 | if (argp->opcnt > 100) |
| 1396 | goto xdr_error; |
| 1397 | |
Tobias Klauser | e8c96f8 | 2006-03-24 03:15:34 -0800 | [diff] [blame] | 1398 | if (argp->opcnt > ARRAY_SIZE(argp->iops)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1399 | argp->ops = kmalloc(argp->opcnt * sizeof(*argp->ops), GFP_KERNEL); |
| 1400 | if (!argp->ops) { |
| 1401 | argp->ops = argp->iops; |
Chuck Lever | 817cb9d | 2007-09-11 18:01:20 -0400 | [diff] [blame] | 1402 | dprintk("nfsd: couldn't allocate room for COMPOUND\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1403 | goto xdr_error; |
| 1404 | } |
| 1405 | } |
| 1406 | |
Benny Halevy | f2feb96 | 2008-07-02 11:14:22 +0300 | [diff] [blame] | 1407 | if (argp->minorversion >= ARRAY_SIZE(nfsd4_minorversion)) |
Benny Halevy | 30cff1f | 2008-07-02 11:13:18 +0300 | [diff] [blame] | 1408 | argp->opcnt = 0; |
| 1409 | |
Benny Halevy | f2feb96 | 2008-07-02 11:14:22 +0300 | [diff] [blame] | 1410 | ops = &nfsd4_minorversion[argp->minorversion]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1411 | for (i = 0; i < argp->opcnt; i++) { |
| 1412 | op = &argp->ops[i]; |
| 1413 | op->replay = NULL; |
| 1414 | |
| 1415 | /* |
| 1416 | * We can't use READ_BUF() here because we need to handle |
| 1417 | * a missing opcode as an OP_WRITE + 1. So we need to check |
| 1418 | * to see if we're truly at the end of our buffer or if there |
| 1419 | * is another page we need to flip to. |
| 1420 | */ |
| 1421 | |
| 1422 | if (argp->p == argp->end) { |
| 1423 | if (argp->pagelen < 4) { |
| 1424 | /* There isn't an opcode still on the wire */ |
| 1425 | op->opnum = OP_WRITE + 1; |
| 1426 | op->status = nfserr_bad_xdr; |
| 1427 | argp->opcnt = i+1; |
| 1428 | break; |
| 1429 | } |
| 1430 | |
| 1431 | /* |
| 1432 | * False alarm. We just hit a page boundary, but there |
| 1433 | * is still data available. Move pointer across page |
| 1434 | * boundary. *snip from READ_BUF* |
| 1435 | */ |
| 1436 | argp->p = page_address(argp->pagelist[0]); |
| 1437 | argp->pagelist++; |
| 1438 | if (argp->pagelen < PAGE_SIZE) { |
Neil Brown | 2bc3c11 | 2010-04-20 12:16:52 +1000 | [diff] [blame] | 1439 | argp->end = argp->p + (argp->pagelen>>2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1440 | argp->pagelen = 0; |
| 1441 | } else { |
Neil Brown | 2bc3c11 | 2010-04-20 12:16:52 +1000 | [diff] [blame] | 1442 | argp->end = argp->p + (PAGE_SIZE>>2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1443 | argp->pagelen -= PAGE_SIZE; |
| 1444 | } |
| 1445 | } |
| 1446 | op->opnum = ntohl(*argp->p++); |
| 1447 | |
Ricardo Labiaga | de3cab7 | 2009-12-11 20:03:27 -0800 | [diff] [blame] | 1448 | if (op->opnum >= FIRST_NFS4_OP && op->opnum <= LAST_NFS4_OP) |
Benny Halevy | f2feb96 | 2008-07-02 11:14:22 +0300 | [diff] [blame] | 1449 | op->status = ops->decoders[op->opnum](argp, &op->u); |
Benny Halevy | 347e0ad | 2008-07-02 11:13:41 +0300 | [diff] [blame] | 1450 | else { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1451 | op->opnum = OP_ILLEGAL; |
| 1452 | op->status = nfserr_op_illegal; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1453 | } |
| 1454 | |
| 1455 | if (op->status) { |
| 1456 | argp->opcnt = i+1; |
| 1457 | break; |
| 1458 | } |
| 1459 | } |
| 1460 | |
| 1461 | DECODE_TAIL; |
| 1462 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1463 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1464 | #define WRITE32(n) *p++ = htonl(n) |
| 1465 | #define WRITE64(n) do { \ |
| 1466 | *p++ = htonl((u32)((n) >> 32)); \ |
| 1467 | *p++ = htonl((u32)(n)); \ |
| 1468 | } while (0) |
Harvey Harrison | 5108b27 | 2008-07-17 21:33:04 -0700 | [diff] [blame] | 1469 | #define WRITEMEM(ptr,nbytes) do { if (nbytes > 0) { \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1470 | *(p + XDR_QUADLEN(nbytes) -1) = 0; \ |
| 1471 | memcpy(p, ptr, nbytes); \ |
| 1472 | p += XDR_QUADLEN(nbytes); \ |
Harvey Harrison | 5108b27 | 2008-07-17 21:33:04 -0700 | [diff] [blame] | 1473 | }} while (0) |
J. Bruce Fields | c654b8a | 2009-04-16 17:33:25 -0400 | [diff] [blame] | 1474 | |
| 1475 | static void write32(__be32 **p, u32 n) |
| 1476 | { |
| 1477 | *(*p)++ = n; |
| 1478 | } |
| 1479 | |
| 1480 | static void write64(__be32 **p, u64 n) |
| 1481 | { |
| 1482 | write32(p, (u32)(n >> 32)); |
| 1483 | write32(p, (u32)n); |
| 1484 | } |
| 1485 | |
| 1486 | static void write_change(__be32 **p, struct kstat *stat, struct inode *inode) |
| 1487 | { |
| 1488 | if (IS_I_VERSION(inode)) { |
| 1489 | write64(p, inode->i_version); |
| 1490 | } else { |
| 1491 | write32(p, stat->ctime.tv_sec); |
| 1492 | write32(p, stat->ctime.tv_nsec); |
| 1493 | } |
| 1494 | } |
| 1495 | |
| 1496 | static void write_cinfo(__be32 **p, struct nfsd4_change_info *c) |
| 1497 | { |
| 1498 | write32(p, c->atomic); |
| 1499 | if (c->change_supported) { |
| 1500 | write64(p, c->before_change); |
| 1501 | write64(p, c->after_change); |
| 1502 | } else { |
| 1503 | write32(p, c->before_ctime_sec); |
| 1504 | write32(p, c->before_ctime_nsec); |
| 1505 | write32(p, c->after_ctime_sec); |
| 1506 | write32(p, c->after_ctime_nsec); |
| 1507 | } |
| 1508 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1509 | |
| 1510 | #define RESERVE_SPACE(nbytes) do { \ |
| 1511 | p = resp->p; \ |
| 1512 | BUG_ON(p + XDR_QUADLEN(nbytes) > resp->end); \ |
| 1513 | } while (0) |
| 1514 | #define ADJUST_ARGS() resp->p = p |
| 1515 | |
| 1516 | /* |
| 1517 | * Header routine to setup seqid operation replay cache |
| 1518 | */ |
| 1519 | #define ENCODE_SEQID_OP_HEAD \ |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 1520 | __be32 *save; \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1521 | \ |
| 1522 | save = resp->p; |
| 1523 | |
| 1524 | /* |
NeilBrown | 7fb64ce | 2005-07-07 17:59:20 -0700 | [diff] [blame] | 1525 | * Routine for encoding the result of a "seqid-mutating" NFSv4 operation. This |
| 1526 | * is where sequence id's are incremented, and the replay cache is filled. |
| 1527 | * Note that we increment sequence id's here, at the last moment, so we're sure |
| 1528 | * 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] | 1529 | */ |
| 1530 | |
| 1531 | #define ENCODE_SEQID_OP_TAIL(stateowner) do { \ |
| 1532 | if (seqid_mutating_err(nfserr) && stateowner) { \ |
NeilBrown | bd9aac5 | 2005-07-07 17:59:19 -0700 | [diff] [blame] | 1533 | stateowner->so_seqid++; \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1534 | stateowner->so_replay.rp_status = nfserr; \ |
| 1535 | stateowner->so_replay.rp_buflen = \ |
| 1536 | (((char *)(resp)->p - (char *)save)); \ |
| 1537 | memcpy(stateowner->so_replay.rp_buf, save, \ |
| 1538 | stateowner->so_replay.rp_buflen); \ |
| 1539 | } } while (0); |
| 1540 | |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1541 | /* Encode as an array of strings the string given with components |
Daniel Mack | 3ad2f3f | 2010-02-03 08:01:28 +0800 | [diff] [blame] | 1542 | * separated @sep. |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1543 | */ |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1544 | static __be32 nfsd4_encode_components(char sep, char *components, |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 1545 | __be32 **pp, int *buflen) |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1546 | { |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 1547 | __be32 *p = *pp; |
| 1548 | __be32 *countp = p; |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1549 | int strlen, count=0; |
| 1550 | char *str, *end; |
| 1551 | |
| 1552 | dprintk("nfsd4_encode_components(%s)\n", components); |
| 1553 | if ((*buflen -= 4) < 0) |
| 1554 | return nfserr_resource; |
| 1555 | WRITE32(0); /* We will fill this in with @count later */ |
| 1556 | end = str = components; |
| 1557 | while (*end) { |
| 1558 | for (; *end && (*end != sep); end++) |
| 1559 | ; /* Point to end of component */ |
| 1560 | strlen = end - str; |
| 1561 | if (strlen) { |
| 1562 | if ((*buflen -= ((XDR_QUADLEN(strlen) << 2) + 4)) < 0) |
| 1563 | return nfserr_resource; |
| 1564 | WRITE32(strlen); |
| 1565 | WRITEMEM(str, strlen); |
| 1566 | count++; |
| 1567 | } |
| 1568 | else |
| 1569 | end++; |
| 1570 | str = end; |
| 1571 | } |
| 1572 | *pp = p; |
| 1573 | p = countp; |
| 1574 | WRITE32(count); |
| 1575 | return 0; |
| 1576 | } |
| 1577 | |
| 1578 | /* |
| 1579 | * encode a location element of a fs_locations structure |
| 1580 | */ |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1581 | static __be32 nfsd4_encode_fs_location4(struct nfsd4_fs_location *location, |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 1582 | __be32 **pp, int *buflen) |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1583 | { |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1584 | __be32 status; |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 1585 | __be32 *p = *pp; |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1586 | |
| 1587 | status = nfsd4_encode_components(':', location->hosts, &p, buflen); |
| 1588 | if (status) |
| 1589 | return status; |
| 1590 | status = nfsd4_encode_components('/', location->path, &p, buflen); |
| 1591 | if (status) |
| 1592 | return status; |
| 1593 | *pp = p; |
| 1594 | return 0; |
| 1595 | } |
| 1596 | |
| 1597 | /* |
| 1598 | * Return the path to an export point in the pseudo filesystem namespace |
| 1599 | * Returned string is safe to use as long as the caller holds a reference |
| 1600 | * to @exp. |
| 1601 | */ |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1602 | 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] | 1603 | { |
| 1604 | struct svc_fh tmp_fh; |
Trond Myklebust | 2671a4b | 2009-09-02 16:48:32 -0400 | [diff] [blame] | 1605 | char *path = NULL, *rootpath; |
| 1606 | size_t rootlen; |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1607 | |
| 1608 | fh_init(&tmp_fh, NFS4_FHSIZE); |
J. Bruce Fields | df547ef | 2007-07-17 04:04:43 -0700 | [diff] [blame] | 1609 | *stat = exp_pseudoroot(rqstp, &tmp_fh); |
Al Viro | cc45f01 | 2006-10-19 23:28:44 -0700 | [diff] [blame] | 1610 | if (*stat) |
| 1611 | return NULL; |
Jan Blunck | 5477549 | 2008-02-14 19:38:39 -0800 | [diff] [blame] | 1612 | rootpath = tmp_fh.fh_export->ex_pathname; |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1613 | |
Jan Blunck | 5477549 | 2008-02-14 19:38:39 -0800 | [diff] [blame] | 1614 | path = exp->ex_pathname; |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1615 | |
Trond Myklebust | 2671a4b | 2009-09-02 16:48:32 -0400 | [diff] [blame] | 1616 | rootlen = strlen(rootpath); |
| 1617 | if (strncmp(path, rootpath, rootlen)) { |
Chuck Lever | 817cb9d | 2007-09-11 18:01:20 -0400 | [diff] [blame] | 1618 | dprintk("nfsd: fs_locations failed;" |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1619 | "%s is not contained in %s\n", path, rootpath); |
Al Viro | cc45f01 | 2006-10-19 23:28:44 -0700 | [diff] [blame] | 1620 | *stat = nfserr_notsupp; |
Trond Myklebust | 2671a4b | 2009-09-02 16:48:32 -0400 | [diff] [blame] | 1621 | path = NULL; |
| 1622 | goto out; |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1623 | } |
Trond Myklebust | 2671a4b | 2009-09-02 16:48:32 -0400 | [diff] [blame] | 1624 | path += rootlen; |
| 1625 | out: |
| 1626 | fh_put(&tmp_fh); |
| 1627 | return path; |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1628 | } |
| 1629 | |
| 1630 | /* |
| 1631 | * encode a fs_locations structure |
| 1632 | */ |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1633 | static __be32 nfsd4_encode_fs_locations(struct svc_rqst *rqstp, |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1634 | struct svc_export *exp, |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 1635 | __be32 **pp, int *buflen) |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1636 | { |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1637 | __be32 status; |
Al Viro | cc45f01 | 2006-10-19 23:28:44 -0700 | [diff] [blame] | 1638 | int i; |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 1639 | __be32 *p = *pp; |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1640 | struct nfsd4_fs_locations *fslocs = &exp->ex_fslocs; |
Al Viro | cc45f01 | 2006-10-19 23:28:44 -0700 | [diff] [blame] | 1641 | char *root = nfsd4_path(rqstp, exp, &status); |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1642 | |
Al Viro | cc45f01 | 2006-10-19 23:28:44 -0700 | [diff] [blame] | 1643 | if (status) |
| 1644 | return status; |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 1645 | status = nfsd4_encode_components('/', root, &p, buflen); |
| 1646 | if (status) |
| 1647 | return status; |
| 1648 | if ((*buflen -= 4) < 0) |
| 1649 | return nfserr_resource; |
| 1650 | WRITE32(fslocs->locations_count); |
| 1651 | for (i=0; i<fslocs->locations_count; i++) { |
| 1652 | status = nfsd4_encode_fs_location4(&fslocs->locations[i], |
| 1653 | &p, buflen); |
| 1654 | if (status) |
| 1655 | return status; |
| 1656 | } |
| 1657 | *pp = p; |
| 1658 | return 0; |
| 1659 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1660 | |
| 1661 | static u32 nfs4_ftypes[16] = { |
| 1662 | NF4BAD, NF4FIFO, NF4CHR, NF4BAD, |
| 1663 | NF4DIR, NF4BAD, NF4BLK, NF4BAD, |
| 1664 | NF4REG, NF4BAD, NF4LNK, NF4BAD, |
| 1665 | NF4SOCK, NF4BAD, NF4LNK, NF4BAD, |
| 1666 | }; |
| 1667 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1668 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1669 | 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] | 1670 | __be32 **p, int *buflen) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1671 | { |
| 1672 | int status; |
| 1673 | |
| 1674 | if (*buflen < (XDR_QUADLEN(IDMAP_NAMESZ) << 2) + 4) |
| 1675 | return nfserr_resource; |
| 1676 | if (whotype != NFS4_ACL_WHO_NAMED) |
| 1677 | status = nfs4_acl_write_who(whotype, (u8 *)(*p + 1)); |
| 1678 | else if (group) |
| 1679 | status = nfsd_map_gid_to_name(rqstp, id, (u8 *)(*p + 1)); |
| 1680 | else |
| 1681 | status = nfsd_map_uid_to_name(rqstp, id, (u8 *)(*p + 1)); |
| 1682 | if (status < 0) |
| 1683 | return nfserrno(status); |
| 1684 | *p = xdr_encode_opaque(*p, NULL, status); |
| 1685 | *buflen -= (XDR_QUADLEN(status) << 2) + 4; |
| 1686 | BUG_ON(*buflen < 0); |
| 1687 | return 0; |
| 1688 | } |
| 1689 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1690 | static inline __be32 |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 1691 | 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] | 1692 | { |
| 1693 | return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, uid, 0, p, buflen); |
| 1694 | } |
| 1695 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1696 | static inline __be32 |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 1697 | 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] | 1698 | { |
| 1699 | return nfsd4_encode_name(rqstp, NFS4_ACL_WHO_NAMED, gid, 1, p, buflen); |
| 1700 | } |
| 1701 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1702 | static inline __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1703 | 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] | 1704 | __be32 **p, int *buflen) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1705 | { |
| 1706 | return nfsd4_encode_name(rqstp, whotype, id, group, p, buflen); |
| 1707 | } |
| 1708 | |
J.Bruce Fields | 42ca099 | 2006-10-04 02:16:20 -0700 | [diff] [blame] | 1709 | #define WORD0_ABSENT_FS_ATTRS (FATTR4_WORD0_FS_LOCATIONS | FATTR4_WORD0_FSID | \ |
| 1710 | FATTR4_WORD0_RDATTR_ERROR) |
| 1711 | #define WORD1_ABSENT_FS_ATTRS FATTR4_WORD1_MOUNTED_ON_FILEID |
| 1712 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1713 | 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] | 1714 | { |
| 1715 | /* As per referral draft: */ |
| 1716 | if (*bmval0 & ~WORD0_ABSENT_FS_ATTRS || |
| 1717 | *bmval1 & ~WORD1_ABSENT_FS_ATTRS) { |
| 1718 | if (*bmval0 & FATTR4_WORD0_RDATTR_ERROR || |
| 1719 | *bmval0 & FATTR4_WORD0_FS_LOCATIONS) |
| 1720 | *rdattr_err = NFSERR_MOVED; |
| 1721 | else |
| 1722 | return nfserr_moved; |
| 1723 | } |
| 1724 | *bmval0 &= WORD0_ABSENT_FS_ATTRS; |
| 1725 | *bmval1 &= WORD1_ABSENT_FS_ATTRS; |
| 1726 | return 0; |
| 1727 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1728 | |
| 1729 | /* |
| 1730 | * Note: @fhp can be NULL; in this case, we might have to compose the filehandle |
| 1731 | * ourselves. |
| 1732 | * |
| 1733 | * @countp is the buffer size in _words_; upon successful return this becomes |
| 1734 | * replaced with the number of words written. |
| 1735 | */ |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1736 | __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1737 | nfsd4_encode_fattr(struct svc_fh *fhp, struct svc_export *exp, |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 1738 | struct dentry *dentry, __be32 *buffer, int *countp, u32 *bmval, |
Frank Filz | 406a7ea | 2007-11-27 11:34:05 -0800 | [diff] [blame] | 1739 | struct svc_rqst *rqstp, int ignore_crossmnt) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1740 | { |
| 1741 | u32 bmval0 = bmval[0]; |
| 1742 | u32 bmval1 = bmval[1]; |
Andy Adamson | 7e70570 | 2009-04-03 08:29:11 +0300 | [diff] [blame] | 1743 | u32 bmval2 = bmval[2]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1744 | struct kstat stat; |
| 1745 | struct svc_fh tempfh; |
| 1746 | struct kstatfs statfs; |
| 1747 | int buflen = *countp << 2; |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 1748 | __be32 *attrlenp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1749 | u32 dummy; |
| 1750 | u64 dummy64; |
J.Bruce Fields | 42ca099 | 2006-10-04 02:16:20 -0700 | [diff] [blame] | 1751 | u32 rdattr_err = 0; |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 1752 | __be32 *p = buffer; |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 1753 | __be32 status; |
Al Viro | b8dd7b9 | 2006-10-19 23:29:01 -0700 | [diff] [blame] | 1754 | int err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1755 | int aclsupport = 0; |
| 1756 | struct nfs4_acl *acl = NULL; |
Andy Adamson | 7e70570 | 2009-04-03 08:29:11 +0300 | [diff] [blame] | 1757 | struct nfsd4_compoundres *resp = rqstp->rq_resp; |
| 1758 | u32 minorversion = resp->cstate.minorversion; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1759 | |
| 1760 | BUG_ON(bmval1 & NFSD_WRITEONLY_ATTRS_WORD1); |
Andy Adamson | 7e70570 | 2009-04-03 08:29:11 +0300 | [diff] [blame] | 1761 | BUG_ON(bmval0 & ~nfsd_suppattrs0(minorversion)); |
| 1762 | BUG_ON(bmval1 & ~nfsd_suppattrs1(minorversion)); |
| 1763 | BUG_ON(bmval2 & ~nfsd_suppattrs2(minorversion)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1764 | |
J.Bruce Fields | 42ca099 | 2006-10-04 02:16:20 -0700 | [diff] [blame] | 1765 | if (exp->ex_fslocs.migrated) { |
Andy Adamson | 7e70570 | 2009-04-03 08:29:11 +0300 | [diff] [blame] | 1766 | BUG_ON(bmval[2]); |
J.Bruce Fields | 42ca099 | 2006-10-04 02:16:20 -0700 | [diff] [blame] | 1767 | status = fattr_handle_absent_fs(&bmval0, &bmval1, &rdattr_err); |
| 1768 | if (status) |
| 1769 | goto out; |
| 1770 | } |
| 1771 | |
Jan Blunck | 5477549 | 2008-02-14 19:38:39 -0800 | [diff] [blame] | 1772 | err = vfs_getattr(exp->ex_path.mnt, dentry, &stat); |
Al Viro | b8dd7b9 | 2006-10-19 23:29:01 -0700 | [diff] [blame] | 1773 | if (err) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1774 | goto out_nfserr; |
J. Bruce Fields | a16e92e | 2007-09-28 16:45:51 -0400 | [diff] [blame] | 1775 | if ((bmval0 & (FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL | |
| 1776 | FATTR4_WORD0_MAXNAME)) || |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1777 | (bmval1 & (FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | |
| 1778 | FATTR4_WORD1_SPACE_TOTAL))) { |
Al Viro | b8dd7b9 | 2006-10-19 23:29:01 -0700 | [diff] [blame] | 1779 | err = vfs_statfs(dentry, &statfs); |
| 1780 | if (err) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1781 | goto out_nfserr; |
| 1782 | } |
| 1783 | if ((bmval0 & (FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FSID)) && !fhp) { |
| 1784 | fh_init(&tempfh, NFS4_FHSIZE); |
| 1785 | status = fh_compose(&tempfh, exp, dentry, NULL); |
| 1786 | if (status) |
| 1787 | goto out; |
| 1788 | fhp = &tempfh; |
| 1789 | } |
| 1790 | if (bmval0 & (FATTR4_WORD0_ACL | FATTR4_WORD0_ACLSUPPORT |
| 1791 | | FATTR4_WORD0_SUPPORTED_ATTRS)) { |
Al Viro | b8dd7b9 | 2006-10-19 23:29:01 -0700 | [diff] [blame] | 1792 | err = nfsd4_get_nfs4_acl(rqstp, dentry, &acl); |
| 1793 | aclsupport = (err == 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1794 | if (bmval0 & FATTR4_WORD0_ACL) { |
Al Viro | b8dd7b9 | 2006-10-19 23:29:01 -0700 | [diff] [blame] | 1795 | if (err == -EOPNOTSUPP) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1796 | bmval0 &= ~FATTR4_WORD0_ACL; |
Al Viro | b8dd7b9 | 2006-10-19 23:29:01 -0700 | [diff] [blame] | 1797 | else if (err == -EINVAL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1798 | status = nfserr_attrnotsupp; |
| 1799 | goto out; |
Al Viro | b8dd7b9 | 2006-10-19 23:29:01 -0700 | [diff] [blame] | 1800 | } else if (err != 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1801 | goto out_nfserr; |
| 1802 | } |
| 1803 | } |
| 1804 | if ((buflen -= 16) < 0) |
| 1805 | goto out_resource; |
| 1806 | |
Andy Adamson | 7e70570 | 2009-04-03 08:29:11 +0300 | [diff] [blame] | 1807 | if (unlikely(bmval2)) { |
| 1808 | WRITE32(3); |
| 1809 | WRITE32(bmval0); |
| 1810 | WRITE32(bmval1); |
| 1811 | WRITE32(bmval2); |
| 1812 | } else if (likely(bmval1)) { |
| 1813 | WRITE32(2); |
| 1814 | WRITE32(bmval0); |
| 1815 | WRITE32(bmval1); |
| 1816 | } else { |
| 1817 | WRITE32(1); |
| 1818 | WRITE32(bmval0); |
| 1819 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1820 | attrlenp = p++; /* to be backfilled later */ |
| 1821 | |
| 1822 | if (bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS) { |
Andy Adamson | 7e70570 | 2009-04-03 08:29:11 +0300 | [diff] [blame] | 1823 | u32 word0 = nfsd_suppattrs0(minorversion); |
| 1824 | u32 word1 = nfsd_suppattrs1(minorversion); |
| 1825 | u32 word2 = nfsd_suppattrs2(minorversion); |
| 1826 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1827 | if ((buflen -= 12) < 0) |
| 1828 | goto out_resource; |
J.Bruce Fields | 42ca099 | 2006-10-04 02:16:20 -0700 | [diff] [blame] | 1829 | if (!aclsupport) |
| 1830 | word0 &= ~FATTR4_WORD0_ACL; |
Andy Adamson | 7e70570 | 2009-04-03 08:29:11 +0300 | [diff] [blame] | 1831 | if (!word2) { |
| 1832 | WRITE32(2); |
| 1833 | WRITE32(word0); |
| 1834 | WRITE32(word1); |
| 1835 | } else { |
| 1836 | WRITE32(3); |
| 1837 | WRITE32(word0); |
| 1838 | WRITE32(word1); |
| 1839 | WRITE32(word2); |
| 1840 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1841 | } |
| 1842 | if (bmval0 & FATTR4_WORD0_TYPE) { |
| 1843 | if ((buflen -= 4) < 0) |
| 1844 | goto out_resource; |
| 1845 | dummy = nfs4_ftypes[(stat.mode & S_IFMT) >> 12]; |
| 1846 | if (dummy == NF4BAD) |
| 1847 | goto out_serverfault; |
| 1848 | WRITE32(dummy); |
| 1849 | } |
| 1850 | if (bmval0 & FATTR4_WORD0_FH_EXPIRE_TYPE) { |
| 1851 | if ((buflen -= 4) < 0) |
| 1852 | goto out_resource; |
NeilBrown | 4964000 | 2005-06-23 22:02:58 -0700 | [diff] [blame] | 1853 | if (exp->ex_flags & NFSEXP_NOSUBTREECHECK) |
NeilBrown | e34ac86 | 2005-07-07 17:59:30 -0700 | [diff] [blame] | 1854 | WRITE32(NFS4_FH_PERSISTENT); |
NeilBrown | 4964000 | 2005-06-23 22:02:58 -0700 | [diff] [blame] | 1855 | else |
NeilBrown | e34ac86 | 2005-07-07 17:59:30 -0700 | [diff] [blame] | 1856 | WRITE32(NFS4_FH_PERSISTENT|NFS4_FH_VOL_RENAME); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1857 | } |
| 1858 | if (bmval0 & FATTR4_WORD0_CHANGE) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1859 | if ((buflen -= 8) < 0) |
| 1860 | goto out_resource; |
J. Bruce Fields | c654b8a | 2009-04-16 17:33:25 -0400 | [diff] [blame] | 1861 | write_change(&p, &stat, dentry->d_inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1862 | } |
| 1863 | if (bmval0 & FATTR4_WORD0_SIZE) { |
| 1864 | if ((buflen -= 8) < 0) |
| 1865 | goto out_resource; |
| 1866 | WRITE64(stat.size); |
| 1867 | } |
| 1868 | if (bmval0 & FATTR4_WORD0_LINK_SUPPORT) { |
| 1869 | if ((buflen -= 4) < 0) |
| 1870 | goto out_resource; |
| 1871 | WRITE32(1); |
| 1872 | } |
| 1873 | if (bmval0 & FATTR4_WORD0_SYMLINK_SUPPORT) { |
| 1874 | if ((buflen -= 4) < 0) |
| 1875 | goto out_resource; |
| 1876 | WRITE32(1); |
| 1877 | } |
| 1878 | if (bmval0 & FATTR4_WORD0_NAMED_ATTR) { |
| 1879 | if ((buflen -= 4) < 0) |
| 1880 | goto out_resource; |
| 1881 | WRITE32(0); |
| 1882 | } |
| 1883 | if (bmval0 & FATTR4_WORD0_FSID) { |
| 1884 | if ((buflen -= 16) < 0) |
| 1885 | goto out_resource; |
J.Bruce Fields | 42ca099 | 2006-10-04 02:16:20 -0700 | [diff] [blame] | 1886 | if (exp->ex_fslocs.migrated) { |
| 1887 | WRITE64(NFS4_REFERRAL_FSID_MAJOR); |
| 1888 | WRITE64(NFS4_REFERRAL_FSID_MINOR); |
NeilBrown | af6a4e2 | 2007-02-14 00:33:12 -0800 | [diff] [blame] | 1889 | } else switch(fsid_source(fhp)) { |
| 1890 | case FSIDSOURCE_FSID: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1891 | WRITE64((u64)exp->ex_fsid); |
| 1892 | WRITE64((u64)0); |
NeilBrown | af6a4e2 | 2007-02-14 00:33:12 -0800 | [diff] [blame] | 1893 | break; |
| 1894 | case FSIDSOURCE_DEV: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1895 | WRITE32(0); |
| 1896 | WRITE32(MAJOR(stat.dev)); |
| 1897 | WRITE32(0); |
| 1898 | WRITE32(MINOR(stat.dev)); |
NeilBrown | af6a4e2 | 2007-02-14 00:33:12 -0800 | [diff] [blame] | 1899 | break; |
| 1900 | case FSIDSOURCE_UUID: |
| 1901 | WRITEMEM(exp->ex_uuid, 16); |
| 1902 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1903 | } |
| 1904 | } |
| 1905 | if (bmval0 & FATTR4_WORD0_UNIQUE_HANDLES) { |
| 1906 | if ((buflen -= 4) < 0) |
| 1907 | goto out_resource; |
| 1908 | WRITE32(0); |
| 1909 | } |
| 1910 | if (bmval0 & FATTR4_WORD0_LEASE_TIME) { |
| 1911 | if ((buflen -= 4) < 0) |
| 1912 | goto out_resource; |
J. Bruce Fields | cf07d2e | 2010-02-28 23:20:19 -0500 | [diff] [blame] | 1913 | WRITE32(nfsd4_lease); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1914 | } |
| 1915 | if (bmval0 & FATTR4_WORD0_RDATTR_ERROR) { |
| 1916 | if ((buflen -= 4) < 0) |
| 1917 | goto out_resource; |
J.Bruce Fields | 42ca099 | 2006-10-04 02:16:20 -0700 | [diff] [blame] | 1918 | WRITE32(rdattr_err); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1919 | } |
| 1920 | if (bmval0 & FATTR4_WORD0_ACL) { |
| 1921 | struct nfs4_ace *ace; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1922 | |
| 1923 | if (acl == NULL) { |
| 1924 | if ((buflen -= 4) < 0) |
| 1925 | goto out_resource; |
| 1926 | |
| 1927 | WRITE32(0); |
| 1928 | goto out_acl; |
| 1929 | } |
| 1930 | if ((buflen -= 4) < 0) |
| 1931 | goto out_resource; |
| 1932 | WRITE32(acl->naces); |
| 1933 | |
J. Bruce Fields | 28e05dd | 2007-02-16 01:28:30 -0800 | [diff] [blame] | 1934 | for (ace = acl->aces; ace < acl->aces + acl->naces; ace++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1935 | if ((buflen -= 4*3) < 0) |
| 1936 | goto out_resource; |
| 1937 | WRITE32(ace->type); |
| 1938 | WRITE32(ace->flag); |
| 1939 | WRITE32(ace->access_mask & NFS4_ACE_MASK_ALL); |
| 1940 | status = nfsd4_encode_aclname(rqstp, ace->whotype, |
| 1941 | ace->who, ace->flag & NFS4_ACE_IDENTIFIER_GROUP, |
| 1942 | &p, &buflen); |
| 1943 | if (status == nfserr_resource) |
| 1944 | goto out_resource; |
| 1945 | if (status) |
| 1946 | goto out; |
| 1947 | } |
| 1948 | } |
| 1949 | out_acl: |
| 1950 | if (bmval0 & FATTR4_WORD0_ACLSUPPORT) { |
| 1951 | if ((buflen -= 4) < 0) |
| 1952 | goto out_resource; |
| 1953 | WRITE32(aclsupport ? |
| 1954 | ACL4_SUPPORT_ALLOW_ACL|ACL4_SUPPORT_DENY_ACL : 0); |
| 1955 | } |
| 1956 | if (bmval0 & FATTR4_WORD0_CANSETTIME) { |
| 1957 | if ((buflen -= 4) < 0) |
| 1958 | goto out_resource; |
| 1959 | WRITE32(1); |
| 1960 | } |
| 1961 | if (bmval0 & FATTR4_WORD0_CASE_INSENSITIVE) { |
| 1962 | if ((buflen -= 4) < 0) |
| 1963 | goto out_resource; |
| 1964 | WRITE32(1); |
| 1965 | } |
| 1966 | if (bmval0 & FATTR4_WORD0_CASE_PRESERVING) { |
| 1967 | if ((buflen -= 4) < 0) |
| 1968 | goto out_resource; |
| 1969 | WRITE32(1); |
| 1970 | } |
| 1971 | if (bmval0 & FATTR4_WORD0_CHOWN_RESTRICTED) { |
| 1972 | if ((buflen -= 4) < 0) |
| 1973 | goto out_resource; |
| 1974 | WRITE32(1); |
| 1975 | } |
| 1976 | if (bmval0 & FATTR4_WORD0_FILEHANDLE) { |
| 1977 | buflen -= (XDR_QUADLEN(fhp->fh_handle.fh_size) << 2) + 4; |
| 1978 | if (buflen < 0) |
| 1979 | goto out_resource; |
| 1980 | WRITE32(fhp->fh_handle.fh_size); |
| 1981 | WRITEMEM(&fhp->fh_handle.fh_base, fhp->fh_handle.fh_size); |
| 1982 | } |
| 1983 | if (bmval0 & FATTR4_WORD0_FILEID) { |
| 1984 | if ((buflen -= 8) < 0) |
| 1985 | goto out_resource; |
Peter Staubach | 40ee5dc | 2007-08-16 12:10:07 -0400 | [diff] [blame] | 1986 | WRITE64(stat.ino); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1987 | } |
| 1988 | if (bmval0 & FATTR4_WORD0_FILES_AVAIL) { |
| 1989 | if ((buflen -= 8) < 0) |
| 1990 | goto out_resource; |
| 1991 | WRITE64((u64) statfs.f_ffree); |
| 1992 | } |
| 1993 | if (bmval0 & FATTR4_WORD0_FILES_FREE) { |
| 1994 | if ((buflen -= 8) < 0) |
| 1995 | goto out_resource; |
| 1996 | WRITE64((u64) statfs.f_ffree); |
| 1997 | } |
| 1998 | if (bmval0 & FATTR4_WORD0_FILES_TOTAL) { |
| 1999 | if ((buflen -= 8) < 0) |
| 2000 | goto out_resource; |
| 2001 | WRITE64((u64) statfs.f_files); |
| 2002 | } |
J.Bruce Fields | 81c3f41 | 2006-10-04 02:16:19 -0700 | [diff] [blame] | 2003 | if (bmval0 & FATTR4_WORD0_FS_LOCATIONS) { |
| 2004 | status = nfsd4_encode_fs_locations(rqstp, exp, &p, &buflen); |
| 2005 | if (status == nfserr_resource) |
| 2006 | goto out_resource; |
| 2007 | if (status) |
| 2008 | goto out; |
| 2009 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2010 | if (bmval0 & FATTR4_WORD0_HOMOGENEOUS) { |
| 2011 | if ((buflen -= 4) < 0) |
| 2012 | goto out_resource; |
| 2013 | WRITE32(1); |
| 2014 | } |
| 2015 | if (bmval0 & FATTR4_WORD0_MAXFILESIZE) { |
| 2016 | if ((buflen -= 8) < 0) |
| 2017 | goto out_resource; |
| 2018 | WRITE64(~(u64)0); |
| 2019 | } |
| 2020 | if (bmval0 & FATTR4_WORD0_MAXLINK) { |
| 2021 | if ((buflen -= 4) < 0) |
| 2022 | goto out_resource; |
| 2023 | WRITE32(255); |
| 2024 | } |
| 2025 | if (bmval0 & FATTR4_WORD0_MAXNAME) { |
| 2026 | if ((buflen -= 4) < 0) |
| 2027 | goto out_resource; |
J. Bruce Fields | a16e92e | 2007-09-28 16:45:51 -0400 | [diff] [blame] | 2028 | WRITE32(statfs.f_namelen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2029 | } |
| 2030 | if (bmval0 & FATTR4_WORD0_MAXREAD) { |
| 2031 | if ((buflen -= 8) < 0) |
| 2032 | goto out_resource; |
Greg Banks | 7adae48 | 2006-10-04 02:15:47 -0700 | [diff] [blame] | 2033 | WRITE64((u64) svc_max_payload(rqstp)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2034 | } |
| 2035 | if (bmval0 & FATTR4_WORD0_MAXWRITE) { |
| 2036 | if ((buflen -= 8) < 0) |
| 2037 | goto out_resource; |
Greg Banks | 7adae48 | 2006-10-04 02:15:47 -0700 | [diff] [blame] | 2038 | WRITE64((u64) svc_max_payload(rqstp)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2039 | } |
| 2040 | if (bmval1 & FATTR4_WORD1_MODE) { |
| 2041 | if ((buflen -= 4) < 0) |
| 2042 | goto out_resource; |
| 2043 | WRITE32(stat.mode & S_IALLUGO); |
| 2044 | } |
| 2045 | if (bmval1 & FATTR4_WORD1_NO_TRUNC) { |
| 2046 | if ((buflen -= 4) < 0) |
| 2047 | goto out_resource; |
| 2048 | WRITE32(1); |
| 2049 | } |
| 2050 | if (bmval1 & FATTR4_WORD1_NUMLINKS) { |
| 2051 | if ((buflen -= 4) < 0) |
| 2052 | goto out_resource; |
| 2053 | WRITE32(stat.nlink); |
| 2054 | } |
| 2055 | if (bmval1 & FATTR4_WORD1_OWNER) { |
| 2056 | status = nfsd4_encode_user(rqstp, stat.uid, &p, &buflen); |
| 2057 | if (status == nfserr_resource) |
| 2058 | goto out_resource; |
| 2059 | if (status) |
| 2060 | goto out; |
| 2061 | } |
| 2062 | if (bmval1 & FATTR4_WORD1_OWNER_GROUP) { |
| 2063 | status = nfsd4_encode_group(rqstp, stat.gid, &p, &buflen); |
| 2064 | if (status == nfserr_resource) |
| 2065 | goto out_resource; |
| 2066 | if (status) |
| 2067 | goto out; |
| 2068 | } |
| 2069 | if (bmval1 & FATTR4_WORD1_RAWDEV) { |
| 2070 | if ((buflen -= 8) < 0) |
| 2071 | goto out_resource; |
| 2072 | WRITE32((u32) MAJOR(stat.rdev)); |
| 2073 | WRITE32((u32) MINOR(stat.rdev)); |
| 2074 | } |
| 2075 | if (bmval1 & FATTR4_WORD1_SPACE_AVAIL) { |
| 2076 | if ((buflen -= 8) < 0) |
| 2077 | goto out_resource; |
| 2078 | dummy64 = (u64)statfs.f_bavail * (u64)statfs.f_bsize; |
| 2079 | WRITE64(dummy64); |
| 2080 | } |
| 2081 | if (bmval1 & FATTR4_WORD1_SPACE_FREE) { |
| 2082 | if ((buflen -= 8) < 0) |
| 2083 | goto out_resource; |
| 2084 | dummy64 = (u64)statfs.f_bfree * (u64)statfs.f_bsize; |
| 2085 | WRITE64(dummy64); |
| 2086 | } |
| 2087 | if (bmval1 & FATTR4_WORD1_SPACE_TOTAL) { |
| 2088 | if ((buflen -= 8) < 0) |
| 2089 | goto out_resource; |
| 2090 | dummy64 = (u64)statfs.f_blocks * (u64)statfs.f_bsize; |
| 2091 | WRITE64(dummy64); |
| 2092 | } |
| 2093 | if (bmval1 & FATTR4_WORD1_SPACE_USED) { |
| 2094 | if ((buflen -= 8) < 0) |
| 2095 | goto out_resource; |
| 2096 | dummy64 = (u64)stat.blocks << 9; |
| 2097 | WRITE64(dummy64); |
| 2098 | } |
| 2099 | if (bmval1 & FATTR4_WORD1_TIME_ACCESS) { |
| 2100 | if ((buflen -= 12) < 0) |
| 2101 | goto out_resource; |
| 2102 | WRITE32(0); |
| 2103 | WRITE32(stat.atime.tv_sec); |
| 2104 | WRITE32(stat.atime.tv_nsec); |
| 2105 | } |
| 2106 | if (bmval1 & FATTR4_WORD1_TIME_DELTA) { |
| 2107 | if ((buflen -= 12) < 0) |
| 2108 | goto out_resource; |
| 2109 | WRITE32(0); |
| 2110 | WRITE32(1); |
| 2111 | WRITE32(0); |
| 2112 | } |
| 2113 | if (bmval1 & FATTR4_WORD1_TIME_METADATA) { |
| 2114 | if ((buflen -= 12) < 0) |
| 2115 | goto out_resource; |
| 2116 | WRITE32(0); |
| 2117 | WRITE32(stat.ctime.tv_sec); |
| 2118 | WRITE32(stat.ctime.tv_nsec); |
| 2119 | } |
| 2120 | if (bmval1 & FATTR4_WORD1_TIME_MODIFY) { |
| 2121 | if ((buflen -= 12) < 0) |
| 2122 | goto out_resource; |
| 2123 | WRITE32(0); |
| 2124 | WRITE32(stat.mtime.tv_sec); |
| 2125 | WRITE32(stat.mtime.tv_nsec); |
| 2126 | } |
| 2127 | if (bmval1 & FATTR4_WORD1_MOUNTED_ON_FILEID) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2128 | if ((buflen -= 8) < 0) |
| 2129 | goto out_resource; |
Frank Filz | 406a7ea | 2007-11-27 11:34:05 -0800 | [diff] [blame] | 2130 | /* |
| 2131 | * Get parent's attributes if not ignoring crossmount |
| 2132 | * and this is the root of a cross-mounted filesystem. |
| 2133 | */ |
| 2134 | if (ignore_crossmnt == 0 && |
Al Viro | 462d605 | 2010-01-30 16:11:21 -0500 | [diff] [blame] | 2135 | dentry == exp->ex_path.mnt->mnt_root) { |
| 2136 | struct path path = exp->ex_path; |
| 2137 | path_get(&path); |
| 2138 | while (follow_up(&path)) { |
| 2139 | if (path.dentry != path.mnt->mnt_root) |
| 2140 | break; |
| 2141 | } |
| 2142 | err = vfs_getattr(path.mnt, path.dentry, &stat); |
| 2143 | path_put(&path); |
Peter Staubach | 40ee5dc | 2007-08-16 12:10:07 -0400 | [diff] [blame] | 2144 | if (err) |
| 2145 | goto out_nfserr; |
| 2146 | } |
| 2147 | WRITE64(stat.ino); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2148 | } |
Benny Halevy | 8c18f20 | 2009-04-03 08:29:14 +0300 | [diff] [blame] | 2149 | if (bmval2 & FATTR4_WORD2_SUPPATTR_EXCLCREAT) { |
| 2150 | WRITE32(3); |
| 2151 | WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD0); |
| 2152 | WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD1); |
| 2153 | WRITE32(NFSD_SUPPATTR_EXCLCREAT_WORD2); |
| 2154 | } |
Andy Adamson | 7e70570 | 2009-04-03 08:29:11 +0300 | [diff] [blame] | 2155 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2156 | *attrlenp = htonl((char *)p - (char *)attrlenp - 4); |
| 2157 | *countp = p - buffer; |
| 2158 | status = nfs_ok; |
| 2159 | |
| 2160 | out: |
J. Bruce Fields | 28e05dd | 2007-02-16 01:28:30 -0800 | [diff] [blame] | 2161 | kfree(acl); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2162 | if (fhp == &tempfh) |
| 2163 | fh_put(&tempfh); |
| 2164 | return status; |
| 2165 | out_nfserr: |
Al Viro | b8dd7b9 | 2006-10-19 23:29:01 -0700 | [diff] [blame] | 2166 | status = nfserrno(err); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2167 | goto out; |
| 2168 | out_resource: |
| 2169 | *countp = 0; |
| 2170 | status = nfserr_resource; |
| 2171 | goto out; |
| 2172 | out_serverfault: |
| 2173 | status = nfserr_serverfault; |
| 2174 | goto out; |
| 2175 | } |
| 2176 | |
J. Bruce Fields | c0ce6ec | 2008-02-11 15:48:47 -0500 | [diff] [blame] | 2177 | static inline int attributes_need_mount(u32 *bmval) |
| 2178 | { |
| 2179 | if (bmval[0] & ~(FATTR4_WORD0_RDATTR_ERROR | FATTR4_WORD0_LEASE_TIME)) |
| 2180 | return 1; |
| 2181 | if (bmval[1] & ~FATTR4_WORD1_MOUNTED_ON_FILEID) |
| 2182 | return 1; |
| 2183 | return 0; |
| 2184 | } |
| 2185 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2186 | static __be32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2187 | nfsd4_encode_dirent_fattr(struct nfsd4_readdir *cd, |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 2188 | const char *name, int namlen, __be32 *p, int *buflen) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2189 | { |
| 2190 | struct svc_export *exp = cd->rd_fhp->fh_export; |
| 2191 | struct dentry *dentry; |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2192 | __be32 nfserr; |
Frank Filz | 406a7ea | 2007-11-27 11:34:05 -0800 | [diff] [blame] | 2193 | int ignore_crossmnt = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2194 | |
| 2195 | dentry = lookup_one_len(name, cd->rd_fhp->fh_dentry, namlen); |
| 2196 | if (IS_ERR(dentry)) |
| 2197 | return nfserrno(PTR_ERR(dentry)); |
J. Bruce Fields | b2c0cea | 2009-05-05 19:04:29 -0400 | [diff] [blame] | 2198 | if (!dentry->d_inode) { |
| 2199 | /* |
| 2200 | * nfsd_buffered_readdir drops the i_mutex between |
| 2201 | * readdir and calling this callback, leaving a window |
| 2202 | * where this directory entry could have gone away. |
| 2203 | */ |
| 2204 | dput(dentry); |
| 2205 | return nfserr_noent; |
| 2206 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2207 | |
| 2208 | exp_get(exp); |
Frank Filz | 406a7ea | 2007-11-27 11:34:05 -0800 | [diff] [blame] | 2209 | /* |
| 2210 | * In the case of a mountpoint, the client may be asking for |
| 2211 | * attributes that are only properties of the underlying filesystem |
| 2212 | * as opposed to the cross-mounted file system. In such a case, |
| 2213 | * we will not follow the cross mount and will fill the attribtutes |
| 2214 | * directly from the mountpoint dentry. |
| 2215 | */ |
J. Bruce Fields | 3227fa4 | 2009-10-25 21:43:01 -0400 | [diff] [blame] | 2216 | if (nfsd_mountpoint(dentry, exp)) { |
J.Bruce Fields | 021d3a7 | 2006-12-13 00:35:24 -0800 | [diff] [blame] | 2217 | int err; |
| 2218 | |
J. Bruce Fields | 3227fa4 | 2009-10-25 21:43:01 -0400 | [diff] [blame] | 2219 | if (!(exp->ex_flags & NFSEXP_V4ROOT) |
| 2220 | && !attributes_need_mount(cd->rd_bmval)) { |
| 2221 | ignore_crossmnt = 1; |
| 2222 | goto out_encode; |
| 2223 | } |
Andy Adamson | dcb488a3 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 2224 | /* |
| 2225 | * Why the heck aren't we just using nfsd_lookup?? |
| 2226 | * Different "."/".." handling? Something else? |
| 2227 | * At least, add a comment here to explain.... |
| 2228 | */ |
J.Bruce Fields | 021d3a7 | 2006-12-13 00:35:24 -0800 | [diff] [blame] | 2229 | err = nfsd_cross_mnt(cd->rd_rqstp, &dentry, &exp); |
| 2230 | if (err) { |
| 2231 | nfserr = nfserrno(err); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2232 | goto out_put; |
| 2233 | } |
Andy Adamson | dcb488a3 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 2234 | nfserr = check_nfsd_access(exp, cd->rd_rqstp); |
| 2235 | if (nfserr) |
| 2236 | goto out_put; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2237 | |
| 2238 | } |
J. Bruce Fields | 3227fa4 | 2009-10-25 21:43:01 -0400 | [diff] [blame] | 2239 | out_encode: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2240 | nfserr = nfsd4_encode_fattr(NULL, exp, dentry, p, buflen, cd->rd_bmval, |
Frank Filz | 406a7ea | 2007-11-27 11:34:05 -0800 | [diff] [blame] | 2241 | cd->rd_rqstp, ignore_crossmnt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2242 | out_put: |
| 2243 | dput(dentry); |
| 2244 | exp_put(exp); |
| 2245 | return nfserr; |
| 2246 | } |
| 2247 | |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 2248 | static __be32 * |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2249 | nfsd4_encode_rdattr_error(__be32 *p, int buflen, __be32 nfserr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2250 | { |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 2251 | __be32 *attrlenp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2252 | |
| 2253 | if (buflen < 6) |
| 2254 | return NULL; |
| 2255 | *p++ = htonl(2); |
| 2256 | *p++ = htonl(FATTR4_WORD0_RDATTR_ERROR); /* bmval0 */ |
| 2257 | *p++ = htonl(0); /* bmval1 */ |
| 2258 | |
| 2259 | attrlenp = p++; |
| 2260 | *p++ = nfserr; /* no htonl */ |
| 2261 | *attrlenp = htonl((char *)p - (char *)attrlenp - 4); |
| 2262 | return p; |
| 2263 | } |
| 2264 | |
| 2265 | static int |
NeilBrown | a0ad13e | 2007-01-26 00:57:10 -0800 | [diff] [blame] | 2266 | nfsd4_encode_dirent(void *ccdv, const char *name, int namlen, |
| 2267 | loff_t offset, u64 ino, unsigned int d_type) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2268 | { |
NeilBrown | a0ad13e | 2007-01-26 00:57:10 -0800 | [diff] [blame] | 2269 | struct readdir_cd *ccd = ccdv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2270 | struct nfsd4_readdir *cd = container_of(ccd, struct nfsd4_readdir, common); |
| 2271 | int buflen; |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 2272 | __be32 *p = cd->buffer; |
J. Bruce Fields | b2c0cea | 2009-05-05 19:04:29 -0400 | [diff] [blame] | 2273 | __be32 *cookiep; |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2274 | __be32 nfserr = nfserr_toosmall; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2275 | |
| 2276 | /* In nfsv4, "." and ".." never make it onto the wire.. */ |
| 2277 | if (name && isdotent(name, namlen)) { |
| 2278 | cd->common.err = nfs_ok; |
| 2279 | return 0; |
| 2280 | } |
| 2281 | |
| 2282 | if (cd->offset) |
| 2283 | xdr_encode_hyper(cd->offset, (u64) offset); |
| 2284 | |
| 2285 | buflen = cd->buflen - 4 - XDR_QUADLEN(namlen); |
| 2286 | if (buflen < 0) |
| 2287 | goto fail; |
| 2288 | |
| 2289 | *p++ = xdr_one; /* mark entry present */ |
J. Bruce Fields | b2c0cea | 2009-05-05 19:04:29 -0400 | [diff] [blame] | 2290 | cookiep = p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2291 | p = xdr_encode_hyper(p, NFS_OFFSET_MAX); /* offset of next entry */ |
| 2292 | p = xdr_encode_array(p, name, namlen); /* name length & name */ |
| 2293 | |
| 2294 | nfserr = nfsd4_encode_dirent_fattr(cd, name, namlen, p, &buflen); |
| 2295 | switch (nfserr) { |
| 2296 | case nfs_ok: |
| 2297 | p += buflen; |
| 2298 | break; |
| 2299 | case nfserr_resource: |
| 2300 | nfserr = nfserr_toosmall; |
| 2301 | goto fail; |
| 2302 | case nfserr_dropit: |
| 2303 | goto fail; |
J. Bruce Fields | b2c0cea | 2009-05-05 19:04:29 -0400 | [diff] [blame] | 2304 | case nfserr_noent: |
| 2305 | goto skip_entry; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2306 | default: |
| 2307 | /* |
| 2308 | * If the client requested the RDATTR_ERROR attribute, |
| 2309 | * we stuff the error code into this attribute |
| 2310 | * and continue. If this attribute was not requested, |
| 2311 | * then in accordance with the spec, we fail the |
| 2312 | * entire READDIR operation(!) |
| 2313 | */ |
| 2314 | if (!(cd->rd_bmval[0] & FATTR4_WORD0_RDATTR_ERROR)) |
| 2315 | goto fail; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2316 | p = nfsd4_encode_rdattr_error(p, buflen, nfserr); |
Fred Isaman | 34081ef | 2006-01-18 17:43:40 -0800 | [diff] [blame] | 2317 | if (p == NULL) { |
| 2318 | nfserr = nfserr_toosmall; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2319 | goto fail; |
Fred Isaman | 34081ef | 2006-01-18 17:43:40 -0800 | [diff] [blame] | 2320 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2321 | } |
| 2322 | cd->buflen -= (p - cd->buffer); |
| 2323 | cd->buffer = p; |
J. Bruce Fields | b2c0cea | 2009-05-05 19:04:29 -0400 | [diff] [blame] | 2324 | cd->offset = cookiep; |
| 2325 | skip_entry: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2326 | cd->common.err = nfs_ok; |
| 2327 | return 0; |
| 2328 | fail: |
| 2329 | cd->common.err = nfserr; |
| 2330 | return -EINVAL; |
| 2331 | } |
| 2332 | |
Benny Halevy | e2f282b | 2008-08-12 20:45:07 +0300 | [diff] [blame] | 2333 | static void |
| 2334 | nfsd4_encode_stateid(struct nfsd4_compoundres *resp, stateid_t *sid) |
| 2335 | { |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 2336 | __be32 *p; |
Benny Halevy | e2f282b | 2008-08-12 20:45:07 +0300 | [diff] [blame] | 2337 | |
| 2338 | RESERVE_SPACE(sizeof(stateid_t)); |
| 2339 | WRITE32(sid->si_generation); |
| 2340 | WRITEMEM(&sid->si_opaque, sizeof(stateid_opaque_t)); |
| 2341 | ADJUST_ARGS(); |
| 2342 | } |
| 2343 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2344 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2345 | 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] | 2346 | { |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 2347 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2348 | |
| 2349 | if (!nfserr) { |
| 2350 | RESERVE_SPACE(8); |
| 2351 | WRITE32(access->ac_supported); |
| 2352 | WRITE32(access->ac_resp_access); |
| 2353 | ADJUST_ARGS(); |
| 2354 | } |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2355 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2356 | } |
| 2357 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2358 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2359 | 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] | 2360 | { |
| 2361 | ENCODE_SEQID_OP_HEAD; |
| 2362 | |
Benny Halevy | e2f282b | 2008-08-12 20:45:07 +0300 | [diff] [blame] | 2363 | if (!nfserr) |
| 2364 | nfsd4_encode_stateid(resp, &close->cl_stateid); |
| 2365 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2366 | ENCODE_SEQID_OP_TAIL(close->cl_stateowner); |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2367 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2368 | } |
| 2369 | |
| 2370 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2371 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2372 | 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] | 2373 | { |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 2374 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2375 | |
| 2376 | if (!nfserr) { |
| 2377 | RESERVE_SPACE(8); |
| 2378 | WRITEMEM(commit->co_verf.data, 8); |
| 2379 | ADJUST_ARGS(); |
| 2380 | } |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2381 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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_create(struct nfsd4_compoundres *resp, __be32 nfserr, struct nfsd4_create *create) |
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(32); |
J. Bruce Fields | c654b8a | 2009-04-16 17:33:25 -0400 | [diff] [blame] | 2391 | write_cinfo(&p, &create->cr_cinfo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2392 | WRITE32(2); |
| 2393 | WRITE32(create->cr_bmval[0]); |
| 2394 | WRITE32(create->cr_bmval[1]); |
| 2395 | ADJUST_ARGS(); |
| 2396 | } |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2397 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2398 | } |
| 2399 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2400 | static __be32 |
| 2401 | 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] | 2402 | { |
| 2403 | struct svc_fh *fhp = getattr->ga_fhp; |
| 2404 | int buflen; |
| 2405 | |
| 2406 | if (nfserr) |
| 2407 | return nfserr; |
| 2408 | |
| 2409 | buflen = resp->end - resp->p - (COMPOUND_ERR_SLACK_SPACE >> 2); |
| 2410 | nfserr = nfsd4_encode_fattr(fhp, fhp->fh_export, fhp->fh_dentry, |
| 2411 | resp->p, &buflen, getattr->ga_bmval, |
Frank Filz | 406a7ea | 2007-11-27 11:34:05 -0800 | [diff] [blame] | 2412 | resp->rqstp, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2413 | if (!nfserr) |
| 2414 | resp->p += buflen; |
| 2415 | return nfserr; |
| 2416 | } |
| 2417 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2418 | static __be32 |
| 2419 | 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] | 2420 | { |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2421 | struct svc_fh *fhp = *fhpp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2422 | unsigned int len; |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 2423 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2424 | |
| 2425 | if (!nfserr) { |
| 2426 | len = fhp->fh_handle.fh_size; |
| 2427 | RESERVE_SPACE(len + 4); |
| 2428 | WRITE32(len); |
| 2429 | WRITEMEM(&fhp->fh_handle.fh_base, len); |
| 2430 | ADJUST_ARGS(); |
| 2431 | } |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2432 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2433 | } |
| 2434 | |
| 2435 | /* |
| 2436 | * Including all fields other than the name, a LOCK4denied structure requires |
| 2437 | * 8(clientid) + 4(namelen) + 8(offset) + 8(length) + 4(type) = 32 bytes. |
| 2438 | */ |
| 2439 | static void |
| 2440 | nfsd4_encode_lock_denied(struct nfsd4_compoundres *resp, struct nfsd4_lock_denied *ld) |
| 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 | RESERVE_SPACE(32 + XDR_LEN(ld->ld_sop ? ld->ld_sop->so_owner.len : 0)); |
| 2445 | WRITE64(ld->ld_start); |
| 2446 | WRITE64(ld->ld_length); |
| 2447 | WRITE32(ld->ld_type); |
| 2448 | if (ld->ld_sop) { |
| 2449 | WRITEMEM(&ld->ld_clientid, 8); |
| 2450 | WRITE32(ld->ld_sop->so_owner.len); |
| 2451 | WRITEMEM(ld->ld_sop->so_owner.data, ld->ld_sop->so_owner.len); |
| 2452 | kref_put(&ld->ld_sop->so_ref, nfs4_free_stateowner); |
| 2453 | } else { /* non - nfsv4 lock in conflict, no clientid nor owner */ |
| 2454 | WRITE64((u64)0); /* clientid */ |
| 2455 | WRITE32(0); /* length of owner name */ |
| 2456 | } |
| 2457 | ADJUST_ARGS(); |
| 2458 | } |
| 2459 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2460 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2461 | 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] | 2462 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2463 | ENCODE_SEQID_OP_HEAD; |
| 2464 | |
Benny Halevy | e2f282b | 2008-08-12 20:45:07 +0300 | [diff] [blame] | 2465 | if (!nfserr) |
| 2466 | nfsd4_encode_stateid(resp, &lock->lk_resp_stateid); |
| 2467 | else if (nfserr == nfserr_denied) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2468 | nfsd4_encode_lock_denied(resp, &lock->lk_denied); |
| 2469 | |
J. Bruce Fields | 3a65588 | 2006-01-18 17:43:19 -0800 | [diff] [blame] | 2470 | ENCODE_SEQID_OP_TAIL(lock->lk_replay_owner); |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2471 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2472 | } |
| 2473 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2474 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2475 | 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] | 2476 | { |
| 2477 | if (nfserr == nfserr_denied) |
| 2478 | nfsd4_encode_lock_denied(resp, &lockt->lt_denied); |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2479 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2480 | } |
| 2481 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2482 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2483 | 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] | 2484 | { |
| 2485 | ENCODE_SEQID_OP_HEAD; |
| 2486 | |
Benny Halevy | e2f282b | 2008-08-12 20:45:07 +0300 | [diff] [blame] | 2487 | if (!nfserr) |
| 2488 | nfsd4_encode_stateid(resp, &locku->lu_stateid); |
| 2489 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2490 | ENCODE_SEQID_OP_TAIL(locku->lu_stateowner); |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2491 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2492 | } |
| 2493 | |
| 2494 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2495 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2496 | 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] | 2497 | { |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 2498 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2499 | |
| 2500 | if (!nfserr) { |
| 2501 | RESERVE_SPACE(20); |
J. Bruce Fields | c654b8a | 2009-04-16 17:33:25 -0400 | [diff] [blame] | 2502 | write_cinfo(&p, &link->li_cinfo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2503 | ADJUST_ARGS(); |
| 2504 | } |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2505 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2506 | } |
| 2507 | |
| 2508 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2509 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2510 | 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] | 2511 | { |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 2512 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2513 | ENCODE_SEQID_OP_HEAD; |
| 2514 | |
| 2515 | if (nfserr) |
| 2516 | goto out; |
| 2517 | |
Benny Halevy | e2f282b | 2008-08-12 20:45:07 +0300 | [diff] [blame] | 2518 | nfsd4_encode_stateid(resp, &open->op_stateid); |
| 2519 | RESERVE_SPACE(40); |
J. Bruce Fields | c654b8a | 2009-04-16 17:33:25 -0400 | [diff] [blame] | 2520 | write_cinfo(&p, &open->op_cinfo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2521 | WRITE32(open->op_rflags); |
| 2522 | WRITE32(2); |
| 2523 | WRITE32(open->op_bmval[0]); |
| 2524 | WRITE32(open->op_bmval[1]); |
| 2525 | WRITE32(open->op_delegate_type); |
| 2526 | ADJUST_ARGS(); |
| 2527 | |
| 2528 | switch (open->op_delegate_type) { |
| 2529 | case NFS4_OPEN_DELEGATE_NONE: |
| 2530 | break; |
| 2531 | case NFS4_OPEN_DELEGATE_READ: |
Benny Halevy | e2f282b | 2008-08-12 20:45:07 +0300 | [diff] [blame] | 2532 | nfsd4_encode_stateid(resp, &open->op_delegate_stateid); |
| 2533 | RESERVE_SPACE(20); |
NeilBrown | 7b190fe | 2005-06-23 22:03:23 -0700 | [diff] [blame] | 2534 | WRITE32(open->op_recall); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2535 | |
| 2536 | /* |
| 2537 | * TODO: ACE's in delegations |
| 2538 | */ |
| 2539 | WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); |
| 2540 | WRITE32(0); |
| 2541 | WRITE32(0); |
| 2542 | WRITE32(0); /* XXX: is NULL principal ok? */ |
| 2543 | ADJUST_ARGS(); |
| 2544 | break; |
| 2545 | case NFS4_OPEN_DELEGATE_WRITE: |
Benny Halevy | e2f282b | 2008-08-12 20:45:07 +0300 | [diff] [blame] | 2546 | nfsd4_encode_stateid(resp, &open->op_delegate_stateid); |
| 2547 | RESERVE_SPACE(32); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2548 | WRITE32(0); |
| 2549 | |
| 2550 | /* |
| 2551 | * TODO: space_limit's in delegations |
| 2552 | */ |
| 2553 | WRITE32(NFS4_LIMIT_SIZE); |
| 2554 | WRITE32(~(u32)0); |
| 2555 | WRITE32(~(u32)0); |
| 2556 | |
| 2557 | /* |
| 2558 | * TODO: ACE's in delegations |
| 2559 | */ |
| 2560 | WRITE32(NFS4_ACE_ACCESS_ALLOWED_ACE_TYPE); |
| 2561 | WRITE32(0); |
| 2562 | WRITE32(0); |
| 2563 | WRITE32(0); /* XXX: is NULL principal ok? */ |
| 2564 | ADJUST_ARGS(); |
| 2565 | break; |
| 2566 | default: |
| 2567 | BUG(); |
| 2568 | } |
| 2569 | /* XXX save filehandle here */ |
| 2570 | out: |
| 2571 | ENCODE_SEQID_OP_TAIL(open->op_stateowner); |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2572 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2573 | } |
| 2574 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2575 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2576 | 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] | 2577 | { |
| 2578 | ENCODE_SEQID_OP_HEAD; |
Benny Halevy | e2f282b | 2008-08-12 20:45:07 +0300 | [diff] [blame] | 2579 | |
| 2580 | if (!nfserr) |
| 2581 | nfsd4_encode_stateid(resp, &oc->oc_resp_stateid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2582 | |
| 2583 | ENCODE_SEQID_OP_TAIL(oc->oc_stateowner); |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2584 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2585 | } |
| 2586 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2587 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2588 | 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] | 2589 | { |
| 2590 | ENCODE_SEQID_OP_HEAD; |
Benny Halevy | e2f282b | 2008-08-12 20:45:07 +0300 | [diff] [blame] | 2591 | |
| 2592 | if (!nfserr) |
| 2593 | nfsd4_encode_stateid(resp, &od->od_stateid); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2594 | |
| 2595 | ENCODE_SEQID_OP_TAIL(od->od_stateowner); |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2596 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2597 | } |
| 2598 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2599 | static __be32 |
| 2600 | nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr, |
NeilBrown | 4452435 | 2006-10-04 02:15:46 -0700 | [diff] [blame] | 2601 | struct nfsd4_read *read) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2602 | { |
| 2603 | u32 eof; |
| 2604 | int v, pn; |
| 2605 | unsigned long maxcount; |
| 2606 | long len; |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 2607 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2608 | |
| 2609 | if (nfserr) |
| 2610 | return nfserr; |
| 2611 | if (resp->xbuf->page_len) |
| 2612 | return nfserr_resource; |
| 2613 | |
| 2614 | RESERVE_SPACE(8); /* eof flag and byte count */ |
| 2615 | |
Greg Banks | 7adae48 | 2006-10-04 02:15:47 -0700 | [diff] [blame] | 2616 | maxcount = svc_max_payload(resp->rqstp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2617 | if (maxcount > read->rd_length) |
| 2618 | maxcount = read->rd_length; |
| 2619 | |
| 2620 | len = maxcount; |
| 2621 | v = 0; |
| 2622 | while (len > 0) { |
NeilBrown | 4452435 | 2006-10-04 02:15:46 -0700 | [diff] [blame] | 2623 | pn = resp->rqstp->rq_resused++; |
NeilBrown | 3cc03b1 | 2006-10-04 02:15:47 -0700 | [diff] [blame] | 2624 | resp->rqstp->rq_vec[v].iov_base = |
NeilBrown | 4452435 | 2006-10-04 02:15:46 -0700 | [diff] [blame] | 2625 | page_address(resp->rqstp->rq_respages[pn]); |
NeilBrown | 3cc03b1 | 2006-10-04 02:15:47 -0700 | [diff] [blame] | 2626 | resp->rqstp->rq_vec[v].iov_len = |
NeilBrown | 4452435 | 2006-10-04 02:15:46 -0700 | [diff] [blame] | 2627 | len < PAGE_SIZE ? len : PAGE_SIZE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2628 | v++; |
| 2629 | len -= PAGE_SIZE; |
| 2630 | } |
| 2631 | read->rd_vlen = v; |
| 2632 | |
| 2633 | nfserr = nfsd_read(read->rd_rqstp, read->rd_fhp, read->rd_filp, |
NeilBrown | 3cc03b1 | 2006-10-04 02:15:47 -0700 | [diff] [blame] | 2634 | read->rd_offset, resp->rqstp->rq_vec, read->rd_vlen, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2635 | &maxcount); |
| 2636 | |
| 2637 | if (nfserr == nfserr_symlink) |
| 2638 | nfserr = nfserr_inval; |
| 2639 | if (nfserr) |
| 2640 | return nfserr; |
NeilBrown | 4452435 | 2006-10-04 02:15:46 -0700 | [diff] [blame] | 2641 | eof = (read->rd_offset + maxcount >= |
| 2642 | read->rd_fhp->fh_dentry->d_inode->i_size); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2643 | |
| 2644 | WRITE32(eof); |
| 2645 | WRITE32(maxcount); |
| 2646 | ADJUST_ARGS(); |
NeilBrown | 6ed6dec | 2006-04-10 22:55:32 -0700 | [diff] [blame] | 2647 | resp->xbuf->head[0].iov_len = (char*)p |
| 2648 | - (char*)resp->xbuf->head[0].iov_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2649 | resp->xbuf->page_len = maxcount; |
| 2650 | |
NeilBrown | 6ed6dec | 2006-04-10 22:55:32 -0700 | [diff] [blame] | 2651 | /* Use rest of head for padding and remaining ops: */ |
NeilBrown | 6ed6dec | 2006-04-10 22:55:32 -0700 | [diff] [blame] | 2652 | resp->xbuf->tail[0].iov_base = p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2653 | resp->xbuf->tail[0].iov_len = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2654 | if (maxcount&3) { |
NeilBrown | 6ed6dec | 2006-04-10 22:55:32 -0700 | [diff] [blame] | 2655 | RESERVE_SPACE(4); |
| 2656 | WRITE32(0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2657 | resp->xbuf->tail[0].iov_base += maxcount&3; |
| 2658 | resp->xbuf->tail[0].iov_len = 4 - (maxcount&3); |
NeilBrown | 6ed6dec | 2006-04-10 22:55:32 -0700 | [diff] [blame] | 2659 | ADJUST_ARGS(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2660 | } |
| 2661 | return 0; |
| 2662 | } |
| 2663 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2664 | static __be32 |
| 2665 | 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] | 2666 | { |
| 2667 | int maxcount; |
| 2668 | char *page; |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 2669 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2670 | |
| 2671 | if (nfserr) |
| 2672 | return nfserr; |
| 2673 | if (resp->xbuf->page_len) |
| 2674 | return nfserr_resource; |
| 2675 | |
NeilBrown | 4452435 | 2006-10-04 02:15:46 -0700 | [diff] [blame] | 2676 | page = page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused++]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2677 | |
| 2678 | maxcount = PAGE_SIZE; |
| 2679 | RESERVE_SPACE(4); |
| 2680 | |
| 2681 | /* |
| 2682 | * XXX: By default, the ->readlink() VFS op will truncate symlinks |
| 2683 | * if they would overflow the buffer. Is this kosher in NFSv4? If |
| 2684 | * not, one easy fix is: if ->readlink() precisely fills the buffer, |
| 2685 | * assume that truncation occurred, and return NFS4ERR_RESOURCE. |
| 2686 | */ |
| 2687 | nfserr = nfsd_readlink(readlink->rl_rqstp, readlink->rl_fhp, page, &maxcount); |
| 2688 | if (nfserr == nfserr_isdir) |
| 2689 | return nfserr_inval; |
| 2690 | if (nfserr) |
| 2691 | return nfserr; |
| 2692 | |
| 2693 | WRITE32(maxcount); |
| 2694 | ADJUST_ARGS(); |
NeilBrown | 6ed6dec | 2006-04-10 22:55:32 -0700 | [diff] [blame] | 2695 | resp->xbuf->head[0].iov_len = (char*)p |
| 2696 | - (char*)resp->xbuf->head[0].iov_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2697 | resp->xbuf->page_len = maxcount; |
NeilBrown | 6ed6dec | 2006-04-10 22:55:32 -0700 | [diff] [blame] | 2698 | |
| 2699 | /* Use rest of head for padding and remaining ops: */ |
NeilBrown | 6ed6dec | 2006-04-10 22:55:32 -0700 | [diff] [blame] | 2700 | resp->xbuf->tail[0].iov_base = p; |
| 2701 | resp->xbuf->tail[0].iov_len = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2702 | if (maxcount&3) { |
NeilBrown | 6ed6dec | 2006-04-10 22:55:32 -0700 | [diff] [blame] | 2703 | RESERVE_SPACE(4); |
| 2704 | WRITE32(0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2705 | resp->xbuf->tail[0].iov_base += maxcount&3; |
| 2706 | resp->xbuf->tail[0].iov_len = 4 - (maxcount&3); |
NeilBrown | 6ed6dec | 2006-04-10 22:55:32 -0700 | [diff] [blame] | 2707 | ADJUST_ARGS(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2708 | } |
| 2709 | return 0; |
| 2710 | } |
| 2711 | |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2712 | static __be32 |
| 2713 | 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] | 2714 | { |
| 2715 | int maxcount; |
| 2716 | loff_t offset; |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 2717 | __be32 *page, *savep, *tailbase; |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 2718 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2719 | |
| 2720 | if (nfserr) |
| 2721 | return nfserr; |
| 2722 | if (resp->xbuf->page_len) |
| 2723 | return nfserr_resource; |
| 2724 | |
| 2725 | RESERVE_SPACE(8); /* verifier */ |
| 2726 | savep = p; |
| 2727 | |
| 2728 | /* XXX: Following NFSv3, we ignore the READDIR verifier for now. */ |
| 2729 | WRITE32(0); |
| 2730 | WRITE32(0); |
| 2731 | ADJUST_ARGS(); |
| 2732 | 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] | 2733 | tailbase = p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2734 | |
| 2735 | maxcount = PAGE_SIZE; |
| 2736 | if (maxcount > readdir->rd_maxcount) |
| 2737 | maxcount = readdir->rd_maxcount; |
| 2738 | |
| 2739 | /* |
| 2740 | * Convert from bytes to words, account for the two words already |
| 2741 | * written, make sure to leave two words at the end for the next |
| 2742 | * pointer and eof field. |
| 2743 | */ |
| 2744 | maxcount = (maxcount >> 2) - 4; |
| 2745 | if (maxcount < 0) { |
| 2746 | nfserr = nfserr_toosmall; |
| 2747 | goto err_no_verf; |
| 2748 | } |
| 2749 | |
NeilBrown | 4452435 | 2006-10-04 02:15:46 -0700 | [diff] [blame] | 2750 | page = page_address(resp->rqstp->rq_respages[resp->rqstp->rq_resused++]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2751 | readdir->common.err = 0; |
| 2752 | readdir->buflen = maxcount; |
| 2753 | readdir->buffer = page; |
| 2754 | readdir->offset = NULL; |
| 2755 | |
| 2756 | offset = readdir->rd_cookie; |
| 2757 | nfserr = nfsd_readdir(readdir->rd_rqstp, readdir->rd_fhp, |
| 2758 | &offset, |
| 2759 | &readdir->common, nfsd4_encode_dirent); |
| 2760 | if (nfserr == nfs_ok && |
| 2761 | readdir->common.err == nfserr_toosmall && |
| 2762 | readdir->buffer == page) |
| 2763 | nfserr = nfserr_toosmall; |
| 2764 | if (nfserr == nfserr_symlink) |
| 2765 | nfserr = nfserr_notdir; |
| 2766 | if (nfserr) |
| 2767 | goto err_no_verf; |
| 2768 | |
| 2769 | if (readdir->offset) |
| 2770 | xdr_encode_hyper(readdir->offset, offset); |
| 2771 | |
| 2772 | p = readdir->buffer; |
| 2773 | *p++ = 0; /* no more entries */ |
| 2774 | *p++ = htonl(readdir->common.err == nfserr_eof); |
NeilBrown | 4452435 | 2006-10-04 02:15:46 -0700 | [diff] [blame] | 2775 | resp->xbuf->page_len = ((char*)p) - (char*)page_address( |
| 2776 | resp->rqstp->rq_respages[resp->rqstp->rq_resused-1]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2777 | |
NeilBrown | bb6e8a9 | 2006-04-10 22:55:33 -0700 | [diff] [blame] | 2778 | /* Use rest of head for padding and remaining ops: */ |
NeilBrown | bb6e8a9 | 2006-04-10 22:55:33 -0700 | [diff] [blame] | 2779 | resp->xbuf->tail[0].iov_base = tailbase; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2780 | resp->xbuf->tail[0].iov_len = 0; |
| 2781 | resp->p = resp->xbuf->tail[0].iov_base; |
NeilBrown | bb6e8a9 | 2006-04-10 22:55:33 -0700 | [diff] [blame] | 2782 | 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] | 2783 | |
| 2784 | return 0; |
| 2785 | err_no_verf: |
| 2786 | p = savep; |
| 2787 | ADJUST_ARGS(); |
| 2788 | return nfserr; |
| 2789 | } |
| 2790 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2791 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2792 | 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] | 2793 | { |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 2794 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2795 | |
| 2796 | if (!nfserr) { |
| 2797 | RESERVE_SPACE(20); |
J. Bruce Fields | c654b8a | 2009-04-16 17:33:25 -0400 | [diff] [blame] | 2798 | write_cinfo(&p, &remove->rm_cinfo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2799 | ADJUST_ARGS(); |
| 2800 | } |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2801 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2802 | } |
| 2803 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2804 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2805 | 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] | 2806 | { |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 2807 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2808 | |
| 2809 | if (!nfserr) { |
| 2810 | RESERVE_SPACE(40); |
J. Bruce Fields | c654b8a | 2009-04-16 17:33:25 -0400 | [diff] [blame] | 2811 | write_cinfo(&p, &rename->rn_sinfo); |
| 2812 | write_cinfo(&p, &rename->rn_tinfo); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2813 | ADJUST_ARGS(); |
| 2814 | } |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2815 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2816 | } |
| 2817 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2818 | static __be32 |
Al Viro | ca5c8cd | 2007-07-26 17:33:49 +0100 | [diff] [blame] | 2819 | nfsd4_encode_secinfo(struct nfsd4_compoundres *resp, __be32 nfserr, |
Andy Adamson | dcb488a3 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 2820 | struct nfsd4_secinfo *secinfo) |
| 2821 | { |
| 2822 | int i = 0; |
| 2823 | struct svc_export *exp = secinfo->si_exp; |
J. Bruce Fields | 4796f45 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 2824 | u32 nflavs; |
| 2825 | struct exp_flavor_info *flavs; |
| 2826 | struct exp_flavor_info def_flavs[2]; |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 2827 | __be32 *p; |
Andy Adamson | dcb488a3 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 2828 | |
| 2829 | if (nfserr) |
| 2830 | goto out; |
J. Bruce Fields | 4796f45 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 2831 | if (exp->ex_nflavors) { |
| 2832 | flavs = exp->ex_flavors; |
| 2833 | nflavs = exp->ex_nflavors; |
| 2834 | } else { /* Handling of some defaults in absence of real secinfo: */ |
| 2835 | flavs = def_flavs; |
| 2836 | if (exp->ex_client->flavour->flavour == RPC_AUTH_UNIX) { |
| 2837 | nflavs = 2; |
| 2838 | flavs[0].pseudoflavor = RPC_AUTH_UNIX; |
| 2839 | flavs[1].pseudoflavor = RPC_AUTH_NULL; |
| 2840 | } else if (exp->ex_client->flavour->flavour == RPC_AUTH_GSS) { |
| 2841 | nflavs = 1; |
| 2842 | flavs[0].pseudoflavor |
| 2843 | = svcauth_gss_flavor(exp->ex_client); |
| 2844 | } else { |
| 2845 | nflavs = 1; |
| 2846 | flavs[0].pseudoflavor |
| 2847 | = exp->ex_client->flavour->flavour; |
| 2848 | } |
| 2849 | } |
| 2850 | |
Andy Adamson | dcb488a3 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 2851 | RESERVE_SPACE(4); |
J. Bruce Fields | 4796f45 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 2852 | WRITE32(nflavs); |
Andy Adamson | dcb488a3 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 2853 | ADJUST_ARGS(); |
J. Bruce Fields | 4796f45 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 2854 | for (i = 0; i < nflavs; i++) { |
| 2855 | u32 flav = flavs[i].pseudoflavor; |
Andy Adamson | dcb488a3 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 2856 | struct gss_api_mech *gm = gss_mech_get_by_pseudoflavor(flav); |
| 2857 | |
| 2858 | if (gm) { |
| 2859 | RESERVE_SPACE(4); |
| 2860 | WRITE32(RPC_AUTH_GSS); |
| 2861 | ADJUST_ARGS(); |
| 2862 | RESERVE_SPACE(4 + gm->gm_oid.len); |
| 2863 | WRITE32(gm->gm_oid.len); |
| 2864 | WRITEMEM(gm->gm_oid.data, gm->gm_oid.len); |
| 2865 | ADJUST_ARGS(); |
| 2866 | RESERVE_SPACE(4); |
| 2867 | WRITE32(0); /* qop */ |
| 2868 | ADJUST_ARGS(); |
| 2869 | RESERVE_SPACE(4); |
| 2870 | WRITE32(gss_pseudoflavor_to_service(gm, flav)); |
| 2871 | ADJUST_ARGS(); |
| 2872 | gss_mech_put(gm); |
| 2873 | } else { |
| 2874 | RESERVE_SPACE(4); |
| 2875 | WRITE32(flav); |
| 2876 | ADJUST_ARGS(); |
| 2877 | } |
| 2878 | } |
| 2879 | out: |
| 2880 | if (exp) |
| 2881 | exp_put(exp); |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2882 | return nfserr; |
Andy Adamson | dcb488a3 | 2007-07-17 04:04:51 -0700 | [diff] [blame] | 2883 | } |
| 2884 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2885 | /* |
| 2886 | * The SETATTR encode routine is special -- it always encodes a bitmap, |
| 2887 | * regardless of the error status. |
| 2888 | */ |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2889 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2890 | 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] | 2891 | { |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 2892 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2893 | |
| 2894 | RESERVE_SPACE(12); |
| 2895 | if (nfserr) { |
| 2896 | WRITE32(2); |
| 2897 | WRITE32(0); |
| 2898 | WRITE32(0); |
| 2899 | } |
| 2900 | else { |
| 2901 | WRITE32(2); |
| 2902 | WRITE32(setattr->sa_bmval[0]); |
| 2903 | WRITE32(setattr->sa_bmval[1]); |
| 2904 | } |
| 2905 | ADJUST_ARGS(); |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2906 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2907 | } |
| 2908 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2909 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2910 | 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] | 2911 | { |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 2912 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2913 | |
| 2914 | if (!nfserr) { |
| 2915 | RESERVE_SPACE(8 + sizeof(nfs4_verifier)); |
| 2916 | WRITEMEM(&scd->se_clientid, 8); |
| 2917 | WRITEMEM(&scd->se_confirm, sizeof(nfs4_verifier)); |
| 2918 | ADJUST_ARGS(); |
| 2919 | } |
| 2920 | else if (nfserr == nfserr_clid_inuse) { |
| 2921 | RESERVE_SPACE(8); |
| 2922 | WRITE32(0); |
| 2923 | WRITE32(0); |
| 2924 | ADJUST_ARGS(); |
| 2925 | } |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2926 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2927 | } |
| 2928 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2929 | static __be32 |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 2930 | 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] | 2931 | { |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 2932 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2933 | |
| 2934 | if (!nfserr) { |
| 2935 | RESERVE_SPACE(16); |
| 2936 | WRITE32(write->wr_bytes_written); |
| 2937 | WRITE32(write->wr_how_written); |
| 2938 | WRITEMEM(write->wr_verifier.data, 8); |
| 2939 | ADJUST_ARGS(); |
| 2940 | } |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2941 | return nfserr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2942 | } |
| 2943 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 2944 | static __be32 |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 2945 | nfsd4_encode_exchange_id(struct nfsd4_compoundres *resp, int nfserr, |
| 2946 | struct nfsd4_exchange_id *exid) |
| 2947 | { |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 2948 | __be32 *p; |
Andy Adamson | 0733d21 | 2009-04-03 08:28:01 +0300 | [diff] [blame] | 2949 | char *major_id; |
| 2950 | char *server_scope; |
| 2951 | int major_id_sz; |
| 2952 | int server_scope_sz; |
| 2953 | uint64_t minor_id = 0; |
| 2954 | |
| 2955 | if (nfserr) |
| 2956 | return nfserr; |
| 2957 | |
| 2958 | major_id = utsname()->nodename; |
| 2959 | major_id_sz = strlen(major_id); |
| 2960 | server_scope = utsname()->nodename; |
| 2961 | server_scope_sz = strlen(server_scope); |
| 2962 | |
| 2963 | RESERVE_SPACE( |
| 2964 | 8 /* eir_clientid */ + |
| 2965 | 4 /* eir_sequenceid */ + |
| 2966 | 4 /* eir_flags */ + |
| 2967 | 4 /* spr_how (SP4_NONE) */ + |
| 2968 | 8 /* so_minor_id */ + |
| 2969 | 4 /* so_major_id.len */ + |
| 2970 | (XDR_QUADLEN(major_id_sz) * 4) + |
| 2971 | 4 /* eir_server_scope.len */ + |
| 2972 | (XDR_QUADLEN(server_scope_sz) * 4) + |
| 2973 | 4 /* eir_server_impl_id.count (0) */); |
| 2974 | |
| 2975 | WRITEMEM(&exid->clientid, 8); |
| 2976 | WRITE32(exid->seqid); |
| 2977 | WRITE32(exid->flags); |
| 2978 | |
| 2979 | /* state_protect4_r. Currently only support SP4_NONE */ |
| 2980 | BUG_ON(exid->spa_how != SP4_NONE); |
| 2981 | WRITE32(exid->spa_how); |
| 2982 | |
| 2983 | /* The server_owner struct */ |
| 2984 | WRITE64(minor_id); /* Minor id */ |
| 2985 | /* major id */ |
| 2986 | WRITE32(major_id_sz); |
| 2987 | WRITEMEM(major_id, major_id_sz); |
| 2988 | |
| 2989 | /* Server scope */ |
| 2990 | WRITE32(server_scope_sz); |
| 2991 | WRITEMEM(server_scope, server_scope_sz); |
| 2992 | |
| 2993 | /* Implementation id */ |
| 2994 | WRITE32(0); /* zero length nfs_impl_id4 array */ |
| 2995 | ADJUST_ARGS(); |
| 2996 | return 0; |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 2997 | } |
| 2998 | |
| 2999 | static __be32 |
| 3000 | nfsd4_encode_create_session(struct nfsd4_compoundres *resp, int nfserr, |
| 3001 | struct nfsd4_create_session *sess) |
| 3002 | { |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 3003 | __be32 *p; |
Andy Adamson | ec6b5d7 | 2009-04-03 08:28:28 +0300 | [diff] [blame] | 3004 | |
| 3005 | if (nfserr) |
| 3006 | return nfserr; |
| 3007 | |
| 3008 | RESERVE_SPACE(24); |
| 3009 | WRITEMEM(sess->sessionid.data, NFS4_MAX_SESSIONID_LEN); |
| 3010 | WRITE32(sess->seqid); |
| 3011 | WRITE32(sess->flags); |
| 3012 | ADJUST_ARGS(); |
| 3013 | |
| 3014 | RESERVE_SPACE(28); |
| 3015 | WRITE32(0); /* headerpadsz */ |
| 3016 | WRITE32(sess->fore_channel.maxreq_sz); |
| 3017 | WRITE32(sess->fore_channel.maxresp_sz); |
| 3018 | WRITE32(sess->fore_channel.maxresp_cached); |
| 3019 | WRITE32(sess->fore_channel.maxops); |
| 3020 | WRITE32(sess->fore_channel.maxreqs); |
| 3021 | WRITE32(sess->fore_channel.nr_rdma_attrs); |
| 3022 | ADJUST_ARGS(); |
| 3023 | |
| 3024 | if (sess->fore_channel.nr_rdma_attrs) { |
| 3025 | RESERVE_SPACE(4); |
| 3026 | WRITE32(sess->fore_channel.rdma_attrs); |
| 3027 | ADJUST_ARGS(); |
| 3028 | } |
| 3029 | |
| 3030 | RESERVE_SPACE(28); |
| 3031 | WRITE32(0); /* headerpadsz */ |
| 3032 | WRITE32(sess->back_channel.maxreq_sz); |
| 3033 | WRITE32(sess->back_channel.maxresp_sz); |
| 3034 | WRITE32(sess->back_channel.maxresp_cached); |
| 3035 | WRITE32(sess->back_channel.maxops); |
| 3036 | WRITE32(sess->back_channel.maxreqs); |
| 3037 | WRITE32(sess->back_channel.nr_rdma_attrs); |
| 3038 | ADJUST_ARGS(); |
| 3039 | |
| 3040 | if (sess->back_channel.nr_rdma_attrs) { |
| 3041 | RESERVE_SPACE(4); |
| 3042 | WRITE32(sess->back_channel.rdma_attrs); |
| 3043 | ADJUST_ARGS(); |
| 3044 | } |
| 3045 | return 0; |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 3046 | } |
| 3047 | |
| 3048 | static __be32 |
| 3049 | nfsd4_encode_destroy_session(struct nfsd4_compoundres *resp, int nfserr, |
| 3050 | struct nfsd4_destroy_session *destroy_session) |
| 3051 | { |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 3052 | return nfserr; |
| 3053 | } |
| 3054 | |
Andy Adamson | bf864a3 | 2009-04-03 08:28:35 +0300 | [diff] [blame] | 3055 | __be32 |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 3056 | nfsd4_encode_sequence(struct nfsd4_compoundres *resp, int nfserr, |
| 3057 | struct nfsd4_sequence *seq) |
| 3058 | { |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 3059 | __be32 *p; |
Benny Halevy | b85d4c0 | 2009-04-03 08:28:08 +0300 | [diff] [blame] | 3060 | |
| 3061 | if (nfserr) |
| 3062 | return nfserr; |
| 3063 | |
| 3064 | RESERVE_SPACE(NFS4_MAX_SESSIONID_LEN + 20); |
| 3065 | WRITEMEM(seq->sessionid.data, NFS4_MAX_SESSIONID_LEN); |
| 3066 | WRITE32(seq->seqid); |
| 3067 | WRITE32(seq->slotid); |
| 3068 | WRITE32(seq->maxslots); |
| 3069 | /* |
| 3070 | * FIXME: for now: |
| 3071 | * target_maxslots = maxslots |
| 3072 | * status_flags = 0 |
| 3073 | */ |
| 3074 | WRITE32(seq->maxslots); |
| 3075 | WRITE32(0); |
| 3076 | |
| 3077 | ADJUST_ARGS(); |
Andy Adamson | 557ce26 | 2009-08-28 08:45:04 -0400 | [diff] [blame] | 3078 | resp->cstate.datap = p; /* DRC cache data pointer */ |
Benny Halevy | b85d4c0 | 2009-04-03 08:28:08 +0300 | [diff] [blame] | 3079 | return 0; |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 3080 | } |
| 3081 | |
| 3082 | static __be32 |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 3083 | nfsd4_encode_noop(struct nfsd4_compoundres *resp, __be32 nfserr, void *p) |
| 3084 | { |
| 3085 | return nfserr; |
| 3086 | } |
| 3087 | |
| 3088 | typedef __be32(* nfsd4_enc)(struct nfsd4_compoundres *, __be32, void *); |
| 3089 | |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 3090 | /* |
| 3091 | * Note: nfsd4_enc_ops vector is shared for v4.0 and v4.1 |
| 3092 | * since we don't need to filter out obsolete ops as this is |
| 3093 | * done in the decoding phase. |
| 3094 | */ |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 3095 | static nfsd4_enc nfsd4_enc_ops[] = { |
J. Bruce Fields | ad1060c | 2008-07-18 15:04:16 -0400 | [diff] [blame] | 3096 | [OP_ACCESS] = (nfsd4_enc)nfsd4_encode_access, |
| 3097 | [OP_CLOSE] = (nfsd4_enc)nfsd4_encode_close, |
| 3098 | [OP_COMMIT] = (nfsd4_enc)nfsd4_encode_commit, |
| 3099 | [OP_CREATE] = (nfsd4_enc)nfsd4_encode_create, |
| 3100 | [OP_DELEGPURGE] = (nfsd4_enc)nfsd4_encode_noop, |
| 3101 | [OP_DELEGRETURN] = (nfsd4_enc)nfsd4_encode_noop, |
| 3102 | [OP_GETATTR] = (nfsd4_enc)nfsd4_encode_getattr, |
| 3103 | [OP_GETFH] = (nfsd4_enc)nfsd4_encode_getfh, |
| 3104 | [OP_LINK] = (nfsd4_enc)nfsd4_encode_link, |
| 3105 | [OP_LOCK] = (nfsd4_enc)nfsd4_encode_lock, |
| 3106 | [OP_LOCKT] = (nfsd4_enc)nfsd4_encode_lockt, |
| 3107 | [OP_LOCKU] = (nfsd4_enc)nfsd4_encode_locku, |
| 3108 | [OP_LOOKUP] = (nfsd4_enc)nfsd4_encode_noop, |
| 3109 | [OP_LOOKUPP] = (nfsd4_enc)nfsd4_encode_noop, |
| 3110 | [OP_NVERIFY] = (nfsd4_enc)nfsd4_encode_noop, |
| 3111 | [OP_OPEN] = (nfsd4_enc)nfsd4_encode_open, |
Benny Halevy | 84f09f4 | 2009-03-04 23:05:35 +0200 | [diff] [blame] | 3112 | [OP_OPENATTR] = (nfsd4_enc)nfsd4_encode_noop, |
J. Bruce Fields | ad1060c | 2008-07-18 15:04:16 -0400 | [diff] [blame] | 3113 | [OP_OPEN_CONFIRM] = (nfsd4_enc)nfsd4_encode_open_confirm, |
| 3114 | [OP_OPEN_DOWNGRADE] = (nfsd4_enc)nfsd4_encode_open_downgrade, |
| 3115 | [OP_PUTFH] = (nfsd4_enc)nfsd4_encode_noop, |
| 3116 | [OP_PUTPUBFH] = (nfsd4_enc)nfsd4_encode_noop, |
| 3117 | [OP_PUTROOTFH] = (nfsd4_enc)nfsd4_encode_noop, |
| 3118 | [OP_READ] = (nfsd4_enc)nfsd4_encode_read, |
| 3119 | [OP_READDIR] = (nfsd4_enc)nfsd4_encode_readdir, |
| 3120 | [OP_READLINK] = (nfsd4_enc)nfsd4_encode_readlink, |
| 3121 | [OP_REMOVE] = (nfsd4_enc)nfsd4_encode_remove, |
| 3122 | [OP_RENAME] = (nfsd4_enc)nfsd4_encode_rename, |
| 3123 | [OP_RENEW] = (nfsd4_enc)nfsd4_encode_noop, |
| 3124 | [OP_RESTOREFH] = (nfsd4_enc)nfsd4_encode_noop, |
| 3125 | [OP_SAVEFH] = (nfsd4_enc)nfsd4_encode_noop, |
| 3126 | [OP_SECINFO] = (nfsd4_enc)nfsd4_encode_secinfo, |
| 3127 | [OP_SETATTR] = (nfsd4_enc)nfsd4_encode_setattr, |
| 3128 | [OP_SETCLIENTID] = (nfsd4_enc)nfsd4_encode_setclientid, |
| 3129 | [OP_SETCLIENTID_CONFIRM] = (nfsd4_enc)nfsd4_encode_noop, |
| 3130 | [OP_VERIFY] = (nfsd4_enc)nfsd4_encode_noop, |
| 3131 | [OP_WRITE] = (nfsd4_enc)nfsd4_encode_write, |
| 3132 | [OP_RELEASE_LOCKOWNER] = (nfsd4_enc)nfsd4_encode_noop, |
Andy Adamson | 2db134e | 2009-04-03 08:27:55 +0300 | [diff] [blame] | 3133 | |
| 3134 | /* NFSv4.1 operations */ |
| 3135 | [OP_BACKCHANNEL_CTL] = (nfsd4_enc)nfsd4_encode_noop, |
| 3136 | [OP_BIND_CONN_TO_SESSION] = (nfsd4_enc)nfsd4_encode_noop, |
| 3137 | [OP_EXCHANGE_ID] = (nfsd4_enc)nfsd4_encode_exchange_id, |
| 3138 | [OP_CREATE_SESSION] = (nfsd4_enc)nfsd4_encode_create_session, |
| 3139 | [OP_DESTROY_SESSION] = (nfsd4_enc)nfsd4_encode_destroy_session, |
| 3140 | [OP_FREE_STATEID] = (nfsd4_enc)nfsd4_encode_noop, |
| 3141 | [OP_GET_DIR_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, |
| 3142 | [OP_GETDEVICEINFO] = (nfsd4_enc)nfsd4_encode_noop, |
| 3143 | [OP_GETDEVICELIST] = (nfsd4_enc)nfsd4_encode_noop, |
| 3144 | [OP_LAYOUTCOMMIT] = (nfsd4_enc)nfsd4_encode_noop, |
| 3145 | [OP_LAYOUTGET] = (nfsd4_enc)nfsd4_encode_noop, |
| 3146 | [OP_LAYOUTRETURN] = (nfsd4_enc)nfsd4_encode_noop, |
| 3147 | [OP_SECINFO_NO_NAME] = (nfsd4_enc)nfsd4_encode_noop, |
| 3148 | [OP_SEQUENCE] = (nfsd4_enc)nfsd4_encode_sequence, |
| 3149 | [OP_SET_SSV] = (nfsd4_enc)nfsd4_encode_noop, |
| 3150 | [OP_TEST_STATEID] = (nfsd4_enc)nfsd4_encode_noop, |
| 3151 | [OP_WANT_DELEGATION] = (nfsd4_enc)nfsd4_encode_noop, |
| 3152 | [OP_DESTROY_CLIENTID] = (nfsd4_enc)nfsd4_encode_noop, |
| 3153 | [OP_RECLAIM_COMPLETE] = (nfsd4_enc)nfsd4_encode_noop, |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 3154 | }; |
| 3155 | |
Andy Adamson | 496c262 | 2009-04-03 08:28:48 +0300 | [diff] [blame] | 3156 | /* |
| 3157 | * Calculate the total amount of memory that the compound response has taken |
| 3158 | * after encoding the current operation. |
| 3159 | * |
| 3160 | * pad: add on 8 bytes for the next operation's op_code and status so that |
| 3161 | * there is room to cache a failure on the next operation. |
| 3162 | * |
| 3163 | * Compare this length to the session se_fmaxresp_cached. |
| 3164 | * |
| 3165 | * Our se_fmaxresp_cached will always be a multiple of PAGE_SIZE, and so |
| 3166 | * will be at least a page and will therefore hold the xdr_buf head. |
| 3167 | */ |
| 3168 | static int nfsd4_check_drc_limit(struct nfsd4_compoundres *resp) |
| 3169 | { |
| 3170 | int status = 0; |
| 3171 | struct xdr_buf *xb = &resp->rqstp->rq_res; |
| 3172 | struct nfsd4_compoundargs *args = resp->rqstp->rq_argp; |
| 3173 | struct nfsd4_session *session = NULL; |
| 3174 | struct nfsd4_slot *slot = resp->cstate.slot; |
| 3175 | u32 length, tlen = 0, pad = 8; |
| 3176 | |
| 3177 | if (!nfsd4_has_session(&resp->cstate)) |
| 3178 | return status; |
| 3179 | |
| 3180 | session = resp->cstate.session; |
Andy Adamson | 557ce26 | 2009-08-28 08:45:04 -0400 | [diff] [blame] | 3181 | if (session == NULL || slot->sl_cachethis == 0) |
Andy Adamson | 496c262 | 2009-04-03 08:28:48 +0300 | [diff] [blame] | 3182 | return status; |
| 3183 | |
| 3184 | if (resp->opcnt >= args->opcnt) |
| 3185 | pad = 0; /* this is the last operation */ |
| 3186 | |
| 3187 | if (xb->page_len == 0) { |
| 3188 | length = (char *)resp->p - (char *)xb->head[0].iov_base + pad; |
| 3189 | } else { |
| 3190 | if (xb->tail[0].iov_base && xb->tail[0].iov_len > 0) |
| 3191 | tlen = (char *)resp->p - (char *)xb->tail[0].iov_base; |
| 3192 | |
| 3193 | length = xb->head[0].iov_len + xb->page_len + tlen + pad; |
| 3194 | } |
| 3195 | dprintk("%s length %u, xb->page_len %u tlen %u pad %u\n", __func__, |
| 3196 | length, xb->page_len, tlen, pad); |
| 3197 | |
Alexandros Batsakis | 6c18ba9 | 2009-06-16 04:19:13 +0300 | [diff] [blame] | 3198 | if (length <= session->se_fchannel.maxresp_cached) |
Andy Adamson | 496c262 | 2009-04-03 08:28:48 +0300 | [diff] [blame] | 3199 | return status; |
| 3200 | else |
| 3201 | return nfserr_rep_too_big_to_cache; |
| 3202 | } |
| 3203 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3204 | void |
| 3205 | nfsd4_encode_operation(struct nfsd4_compoundres *resp, struct nfsd4_op *op) |
| 3206 | { |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 3207 | __be32 *statp; |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 3208 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3209 | |
| 3210 | RESERVE_SPACE(8); |
| 3211 | WRITE32(op->opnum); |
| 3212 | statp = p++; /* to be backfilled at the end */ |
| 3213 | ADJUST_ARGS(); |
| 3214 | |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 3215 | if (op->opnum == OP_ILLEGAL) |
| 3216 | goto status; |
| 3217 | BUG_ON(op->opnum < 0 || op->opnum >= ARRAY_SIZE(nfsd4_enc_ops) || |
| 3218 | !nfsd4_enc_ops[op->opnum]); |
| 3219 | op->status = nfsd4_enc_ops[op->opnum](resp, op->status, &op->u); |
Andy Adamson | 496c262 | 2009-04-03 08:28:48 +0300 | [diff] [blame] | 3220 | /* nfsd4_check_drc_limit guarantees enough room for error status */ |
| 3221 | if (!op->status && nfsd4_check_drc_limit(resp)) |
| 3222 | op->status = nfserr_rep_too_big_to_cache; |
Benny Halevy | 695e12f | 2008-07-04 14:38:33 +0300 | [diff] [blame] | 3223 | status: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3224 | /* |
| 3225 | * Note: We write the status directly, instead of using WRITE32(), |
| 3226 | * since it is already in network byte order. |
| 3227 | */ |
| 3228 | *statp = op->status; |
| 3229 | } |
| 3230 | |
| 3231 | /* |
| 3232 | * Encode the reply stored in the stateowner reply cache |
| 3233 | * |
| 3234 | * XDR note: do not encode rp->rp_buflen: the buffer contains the |
| 3235 | * previously sent already encoded operation. |
| 3236 | * |
| 3237 | * called with nfs4_lock_state() held |
| 3238 | */ |
| 3239 | void |
| 3240 | nfsd4_encode_replay(struct nfsd4_compoundres *resp, struct nfsd4_op *op) |
| 3241 | { |
J. Bruce Fields | bc749ca | 2009-04-07 16:55:27 -0700 | [diff] [blame] | 3242 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3243 | struct nfs4_replay *rp = op->replay; |
| 3244 | |
| 3245 | BUG_ON(!rp); |
| 3246 | |
| 3247 | RESERVE_SPACE(8); |
| 3248 | WRITE32(op->opnum); |
| 3249 | *p++ = rp->rp_status; /* already xdr'ed */ |
| 3250 | ADJUST_ARGS(); |
| 3251 | |
| 3252 | RESERVE_SPACE(rp->rp_buflen); |
| 3253 | WRITEMEM(rp->rp_buf, rp->rp_buflen); |
| 3254 | ADJUST_ARGS(); |
| 3255 | } |
| 3256 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3257 | int |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 3258 | nfs4svc_encode_voidres(struct svc_rqst *rqstp, __be32 *p, void *dummy) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3259 | { |
| 3260 | return xdr_ressize_check(rqstp, p); |
| 3261 | } |
| 3262 | |
| 3263 | void nfsd4_release_compoundargs(struct nfsd4_compoundargs *args) |
| 3264 | { |
| 3265 | if (args->ops != args->iops) { |
| 3266 | kfree(args->ops); |
| 3267 | args->ops = args->iops; |
| 3268 | } |
Jesper Juhl | f99d49a | 2005-11-07 01:01:34 -0800 | [diff] [blame] | 3269 | kfree(args->tmpp); |
| 3270 | args->tmpp = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3271 | while (args->to_free) { |
| 3272 | struct tmpbuf *tb = args->to_free; |
| 3273 | args->to_free = tb->next; |
| 3274 | tb->release(tb->buf); |
| 3275 | kfree(tb); |
| 3276 | } |
| 3277 | } |
| 3278 | |
| 3279 | int |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 3280 | 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] | 3281 | { |
Al Viro | b37ad28 | 2006-10-19 23:28:59 -0700 | [diff] [blame] | 3282 | __be32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3283 | |
| 3284 | args->p = p; |
| 3285 | args->end = rqstp->rq_arg.head[0].iov_base + rqstp->rq_arg.head[0].iov_len; |
| 3286 | args->pagelist = rqstp->rq_arg.pages; |
| 3287 | args->pagelen = rqstp->rq_arg.page_len; |
| 3288 | args->tmpp = NULL; |
| 3289 | args->to_free = NULL; |
| 3290 | args->ops = args->iops; |
| 3291 | args->rqstp = rqstp; |
| 3292 | |
| 3293 | status = nfsd4_decode_compound(args); |
| 3294 | if (status) { |
| 3295 | nfsd4_release_compoundargs(args); |
| 3296 | } |
| 3297 | return !status; |
| 3298 | } |
| 3299 | |
| 3300 | int |
Al Viro | 2ebbc01 | 2006-10-19 23:28:58 -0700 | [diff] [blame] | 3301 | 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] | 3302 | { |
| 3303 | /* |
| 3304 | * All that remains is to write the tag and operation count... |
| 3305 | */ |
Andy Adamson | 557ce26 | 2009-08-28 08:45:04 -0400 | [diff] [blame] | 3306 | struct nfsd4_compound_state *cs = &resp->cstate; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3307 | struct kvec *iov; |
| 3308 | p = resp->tagp; |
| 3309 | *p++ = htonl(resp->taglen); |
| 3310 | memcpy(p, resp->tag, resp->taglen); |
| 3311 | p += XDR_QUADLEN(resp->taglen); |
| 3312 | *p++ = htonl(resp->opcnt); |
| 3313 | |
| 3314 | if (rqstp->rq_res.page_len) |
| 3315 | iov = &rqstp->rq_res.tail[0]; |
| 3316 | else |
| 3317 | iov = &rqstp->rq_res.head[0]; |
| 3318 | iov->iov_len = ((char*)resp->p) - (char*)iov->iov_base; |
| 3319 | BUG_ON(iov->iov_len > PAGE_SIZE); |
J. Bruce Fields | 26c0c75 | 2010-04-24 15:35:43 -0400 | [diff] [blame] | 3320 | if (nfsd4_has_session(cs)) { |
| 3321 | if (cs->status != nfserr_replay_cache) { |
| 3322 | nfsd4_store_cache_entry(resp); |
| 3323 | dprintk("%s: SET SLOT STATE TO AVAILABLE\n", __func__); |
Benny Halevy | dbd65a7 | 2010-05-03 19:31:33 +0300 | [diff] [blame] | 3324 | cs->slot->sl_inuse = false; |
J. Bruce Fields | 26c0c75 | 2010-04-24 15:35:43 -0400 | [diff] [blame] | 3325 | } |
Benny Halevy | d768298 | 2010-05-12 00:13:54 +0300 | [diff] [blame] | 3326 | /* Renew the clientid on success and on replay */ |
| 3327 | release_session_client(cs->session); |
J. Bruce Fields | 76407f7 | 2010-06-22 14:10:14 -0400 | [diff] [blame^] | 3328 | nfsd4_put_session(cs->session); |
Andy Adamson | da3846a | 2009-04-03 08:28:22 +0300 | [diff] [blame] | 3329 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3330 | return 1; |
| 3331 | } |
| 3332 | |
| 3333 | /* |
| 3334 | * Local variables: |
| 3335 | * c-basic-offset: 8 |
| 3336 | * End: |
| 3337 | */ |