Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * linux/fs/nfs/nfs3xdr.c |
| 3 | * |
| 4 | * XDR functions to encode/decode NFSv3 RPC arguments and results. |
| 5 | * |
| 6 | * Copyright (C) 1996, 1997 Olaf Kirch |
| 7 | */ |
| 8 | |
| 9 | #include <linux/param.h> |
| 10 | #include <linux/time.h> |
| 11 | #include <linux/mm.h> |
| 12 | #include <linux/slab.h> |
| 13 | #include <linux/utsname.h> |
| 14 | #include <linux/errno.h> |
| 15 | #include <linux/string.h> |
| 16 | #include <linux/in.h> |
| 17 | #include <linux/pagemap.h> |
| 18 | #include <linux/proc_fs.h> |
| 19 | #include <linux/kdev_t.h> |
| 20 | #include <linux/sunrpc/clnt.h> |
| 21 | #include <linux/nfs.h> |
| 22 | #include <linux/nfs3.h> |
| 23 | #include <linux/nfs_fs.h> |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 24 | #include <linux/nfsacl.h> |
David Howells | f7b422b | 2006-06-09 09:34:33 -0400 | [diff] [blame] | 25 | #include "internal.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | |
| 27 | #define NFSDBG_FACILITY NFSDBG_XDR |
| 28 | |
| 29 | /* Mapping from NFS error code to "errno" error code. */ |
| 30 | #define errno_NFSERR_IO EIO |
| 31 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | /* |
| 33 | * Declare the space requirements for NFS arguments and replies as |
| 34 | * number of 32bit-words |
| 35 | */ |
| 36 | #define NFS3_fhandle_sz (1+16) |
| 37 | #define NFS3_fh_sz (NFS3_fhandle_sz) /* shorthand */ |
| 38 | #define NFS3_sattr_sz (15) |
| 39 | #define NFS3_filename_sz (1+(NFS3_MAXNAMLEN>>2)) |
| 40 | #define NFS3_path_sz (1+(NFS3_MAXPATHLEN>>2)) |
| 41 | #define NFS3_fattr_sz (21) |
| 42 | #define NFS3_wcc_attr_sz (6) |
| 43 | #define NFS3_pre_op_attr_sz (1+NFS3_wcc_attr_sz) |
| 44 | #define NFS3_post_op_attr_sz (1+NFS3_fattr_sz) |
| 45 | #define NFS3_wcc_data_sz (NFS3_pre_op_attr_sz+NFS3_post_op_attr_sz) |
| 46 | #define NFS3_fsstat_sz |
| 47 | #define NFS3_fsinfo_sz |
| 48 | #define NFS3_pathconf_sz |
| 49 | #define NFS3_entry_sz (NFS3_filename_sz+3) |
| 50 | |
| 51 | #define NFS3_sattrargs_sz (NFS3_fh_sz+NFS3_sattr_sz+3) |
| 52 | #define NFS3_diropargs_sz (NFS3_fh_sz+NFS3_filename_sz) |
Trond Myklebust | 4fdc17b | 2007-07-14 15:39:57 -0400 | [diff] [blame] | 53 | #define NFS3_removeargs_sz (NFS3_fh_sz+NFS3_filename_sz) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | #define NFS3_accessargs_sz (NFS3_fh_sz+1) |
| 55 | #define NFS3_readlinkargs_sz (NFS3_fh_sz) |
| 56 | #define NFS3_readargs_sz (NFS3_fh_sz+3) |
| 57 | #define NFS3_writeargs_sz (NFS3_fh_sz+5) |
| 58 | #define NFS3_createargs_sz (NFS3_diropargs_sz+NFS3_sattr_sz) |
| 59 | #define NFS3_mkdirargs_sz (NFS3_diropargs_sz+NFS3_sattr_sz) |
Chuck Lever | 94a6d75 | 2006-08-22 20:06:23 -0400 | [diff] [blame] | 60 | #define NFS3_symlinkargs_sz (NFS3_diropargs_sz+1+NFS3_sattr_sz) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | #define NFS3_mknodargs_sz (NFS3_diropargs_sz+2+NFS3_sattr_sz) |
| 62 | #define NFS3_renameargs_sz (NFS3_diropargs_sz+NFS3_diropargs_sz) |
| 63 | #define NFS3_linkargs_sz (NFS3_fh_sz+NFS3_diropargs_sz) |
| 64 | #define NFS3_readdirargs_sz (NFS3_fh_sz+2) |
| 65 | #define NFS3_commitargs_sz (NFS3_fh_sz+3) |
| 66 | |
| 67 | #define NFS3_attrstat_sz (1+NFS3_fattr_sz) |
| 68 | #define NFS3_wccstat_sz (1+NFS3_wcc_data_sz) |
Trond Myklebust | 4fdc17b | 2007-07-14 15:39:57 -0400 | [diff] [blame] | 69 | #define NFS3_removeres_sz (NFS3_wccstat_sz) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | #define NFS3_lookupres_sz (1+NFS3_fh_sz+(2 * NFS3_post_op_attr_sz)) |
| 71 | #define NFS3_accessres_sz (1+NFS3_post_op_attr_sz+1) |
| 72 | #define NFS3_readlinkres_sz (1+NFS3_post_op_attr_sz+1) |
| 73 | #define NFS3_readres_sz (1+NFS3_post_op_attr_sz+3) |
| 74 | #define NFS3_writeres_sz (1+NFS3_wcc_data_sz+4) |
| 75 | #define NFS3_createres_sz (1+NFS3_fh_sz+NFS3_post_op_attr_sz+NFS3_wcc_data_sz) |
| 76 | #define NFS3_renameres_sz (1+(2 * NFS3_wcc_data_sz)) |
| 77 | #define NFS3_linkres_sz (1+NFS3_post_op_attr_sz+NFS3_wcc_data_sz) |
| 78 | #define NFS3_readdirres_sz (1+NFS3_post_op_attr_sz+2) |
| 79 | #define NFS3_fsstatres_sz (1+NFS3_post_op_attr_sz+13) |
| 80 | #define NFS3_fsinfores_sz (1+NFS3_post_op_attr_sz+12) |
| 81 | #define NFS3_pathconfres_sz (1+NFS3_post_op_attr_sz+6) |
| 82 | #define NFS3_commitres_sz (1+NFS3_wcc_data_sz+2) |
| 83 | |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 84 | #define ACL3_getaclargs_sz (NFS3_fh_sz+1) |
Trond Myklebust | ae46141 | 2009-03-10 20:33:18 -0400 | [diff] [blame] | 85 | #define ACL3_setaclargs_sz (NFS3_fh_sz+1+ \ |
| 86 | XDR_QUADLEN(NFS_ACL_INLINE_BUFSIZE)) |
| 87 | #define ACL3_getaclres_sz (1+NFS3_post_op_attr_sz+1+ \ |
| 88 | XDR_QUADLEN(NFS_ACL_INLINE_BUFSIZE)) |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 89 | #define ACL3_setaclres_sz (1+NFS3_post_op_attr_sz) |
| 90 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | /* |
| 92 | * Map file type to S_IFMT bits |
| 93 | */ |
| 94 | static struct { |
| 95 | unsigned int mode; |
| 96 | unsigned int nfs2type; |
| 97 | } nfs_type2fmt[] = { |
| 98 | { 0, NFNON }, |
| 99 | { S_IFREG, NFREG }, |
| 100 | { S_IFDIR, NFDIR }, |
| 101 | { S_IFBLK, NFBLK }, |
| 102 | { S_IFCHR, NFCHR }, |
| 103 | { S_IFLNK, NFLNK }, |
| 104 | { S_IFSOCK, NFSOCK }, |
| 105 | { S_IFIFO, NFFIFO }, |
| 106 | { 0, NFBAD } |
| 107 | }; |
| 108 | |
| 109 | /* |
| 110 | * Common NFS XDR functions as inlines |
| 111 | */ |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 112 | static inline __be32 * |
Trond Myklebust | 4fdc17b | 2007-07-14 15:39:57 -0400 | [diff] [blame] | 113 | xdr_encode_fhandle(__be32 *p, const struct nfs_fh *fh) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | { |
| 115 | return xdr_encode_array(p, fh->data, fh->size); |
| 116 | } |
| 117 | |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 118 | static inline __be32 * |
| 119 | xdr_decode_fhandle(__be32 *p, struct nfs_fh *fh) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | { |
| 121 | if ((fh->size = ntohl(*p++)) <= NFS3_FHSIZE) { |
| 122 | memcpy(fh->data, p, fh->size); |
| 123 | return p + XDR_QUADLEN(fh->size); |
| 124 | } |
| 125 | return NULL; |
| 126 | } |
| 127 | |
| 128 | /* |
| 129 | * Encode/decode time. |
| 130 | */ |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 131 | static inline __be32 * |
| 132 | xdr_encode_time3(__be32 *p, struct timespec *timep) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | { |
| 134 | *p++ = htonl(timep->tv_sec); |
| 135 | *p++ = htonl(timep->tv_nsec); |
| 136 | return p; |
| 137 | } |
| 138 | |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 139 | static inline __be32 * |
| 140 | xdr_decode_time3(__be32 *p, struct timespec *timep) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | { |
| 142 | timep->tv_sec = ntohl(*p++); |
| 143 | timep->tv_nsec = ntohl(*p++); |
| 144 | return p; |
| 145 | } |
| 146 | |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 147 | static __be32 * |
| 148 | xdr_decode_fattr(__be32 *p, struct nfs_fattr *fattr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | { |
| 150 | unsigned int type, major, minor; |
| 151 | int fmode; |
| 152 | |
| 153 | type = ntohl(*p++); |
| 154 | if (type >= NF3BAD) |
| 155 | type = NF3BAD; |
| 156 | fmode = nfs_type2fmt[type].mode; |
| 157 | fattr->type = nfs_type2fmt[type].nfs2type; |
| 158 | fattr->mode = (ntohl(*p++) & ~S_IFMT) | fmode; |
| 159 | fattr->nlink = ntohl(*p++); |
| 160 | fattr->uid = ntohl(*p++); |
| 161 | fattr->gid = ntohl(*p++); |
| 162 | p = xdr_decode_hyper(p, &fattr->size); |
| 163 | p = xdr_decode_hyper(p, &fattr->du.nfs3.used); |
| 164 | |
| 165 | /* Turn remote device info into Linux-specific dev_t */ |
| 166 | major = ntohl(*p++); |
| 167 | minor = ntohl(*p++); |
| 168 | fattr->rdev = MKDEV(major, minor); |
| 169 | if (MAJOR(fattr->rdev) != major || MINOR(fattr->rdev) != minor) |
| 170 | fattr->rdev = 0; |
| 171 | |
Trond Myklebust | 8b4bdcf | 2006-06-09 09:34:19 -0400 | [diff] [blame] | 172 | p = xdr_decode_hyper(p, &fattr->fsid.major); |
| 173 | fattr->fsid.minor = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | p = xdr_decode_hyper(p, &fattr->fileid); |
| 175 | p = xdr_decode_time3(p, &fattr->atime); |
| 176 | p = xdr_decode_time3(p, &fattr->mtime); |
| 177 | p = xdr_decode_time3(p, &fattr->ctime); |
| 178 | |
| 179 | /* Update the mode bits */ |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 180 | fattr->valid |= NFS_ATTR_FATTR_V3; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | return p; |
| 182 | } |
| 183 | |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 184 | static inline __be32 * |
| 185 | xdr_encode_sattr(__be32 *p, struct iattr *attr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | { |
| 187 | if (attr->ia_valid & ATTR_MODE) { |
| 188 | *p++ = xdr_one; |
Trond Myklebust | cf3fff5 | 2006-01-03 09:55:53 +0100 | [diff] [blame] | 189 | *p++ = htonl(attr->ia_mode & S_IALLUGO); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | } else { |
| 191 | *p++ = xdr_zero; |
| 192 | } |
| 193 | if (attr->ia_valid & ATTR_UID) { |
| 194 | *p++ = xdr_one; |
| 195 | *p++ = htonl(attr->ia_uid); |
| 196 | } else { |
| 197 | *p++ = xdr_zero; |
| 198 | } |
| 199 | if (attr->ia_valid & ATTR_GID) { |
| 200 | *p++ = xdr_one; |
| 201 | *p++ = htonl(attr->ia_gid); |
| 202 | } else { |
| 203 | *p++ = xdr_zero; |
| 204 | } |
| 205 | if (attr->ia_valid & ATTR_SIZE) { |
| 206 | *p++ = xdr_one; |
| 207 | p = xdr_encode_hyper(p, (__u64) attr->ia_size); |
| 208 | } else { |
| 209 | *p++ = xdr_zero; |
| 210 | } |
| 211 | if (attr->ia_valid & ATTR_ATIME_SET) { |
| 212 | *p++ = xdr_two; |
| 213 | p = xdr_encode_time3(p, &attr->ia_atime); |
| 214 | } else if (attr->ia_valid & ATTR_ATIME) { |
| 215 | *p++ = xdr_one; |
| 216 | } else { |
| 217 | *p++ = xdr_zero; |
| 218 | } |
| 219 | if (attr->ia_valid & ATTR_MTIME_SET) { |
| 220 | *p++ = xdr_two; |
| 221 | p = xdr_encode_time3(p, &attr->ia_mtime); |
| 222 | } else if (attr->ia_valid & ATTR_MTIME) { |
| 223 | *p++ = xdr_one; |
| 224 | } else { |
| 225 | *p++ = xdr_zero; |
| 226 | } |
| 227 | return p; |
| 228 | } |
| 229 | |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 230 | static inline __be32 * |
| 231 | xdr_decode_wcc_attr(__be32 *p, struct nfs_fattr *fattr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 232 | { |
| 233 | p = xdr_decode_hyper(p, &fattr->pre_size); |
| 234 | p = xdr_decode_time3(p, &fattr->pre_mtime); |
| 235 | p = xdr_decode_time3(p, &fattr->pre_ctime); |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 236 | fattr->valid |= NFS_ATTR_FATTR_PRESIZE |
| 237 | | NFS_ATTR_FATTR_PREMTIME |
| 238 | | NFS_ATTR_FATTR_PRECTIME; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | return p; |
| 240 | } |
| 241 | |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 242 | static inline __be32 * |
| 243 | xdr_decode_post_op_attr(__be32 *p, struct nfs_fattr *fattr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | { |
| 245 | if (*p++) |
| 246 | p = xdr_decode_fattr(p, fattr); |
| 247 | return p; |
| 248 | } |
| 249 | |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 250 | static inline __be32 * |
| 251 | xdr_decode_pre_op_attr(__be32 *p, struct nfs_fattr *fattr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | { |
| 253 | if (*p++) |
| 254 | return xdr_decode_wcc_attr(p, fattr); |
| 255 | return p; |
| 256 | } |
| 257 | |
| 258 | |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 259 | static inline __be32 * |
| 260 | xdr_decode_wcc_data(__be32 *p, struct nfs_fattr *fattr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | { |
| 262 | p = xdr_decode_pre_op_attr(p, fattr); |
| 263 | return xdr_decode_post_op_attr(p, fattr); |
| 264 | } |
| 265 | |
| 266 | /* |
| 267 | * NFS encode functions |
| 268 | */ |
| 269 | |
| 270 | /* |
| 271 | * Encode file handle argument |
| 272 | */ |
| 273 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 274 | nfs3_xdr_fhandle(struct rpc_rqst *req, __be32 *p, struct nfs_fh *fh) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | { |
| 276 | p = xdr_encode_fhandle(p, fh); |
| 277 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
| 278 | return 0; |
| 279 | } |
| 280 | |
| 281 | /* |
| 282 | * Encode SETATTR arguments |
| 283 | */ |
| 284 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 285 | nfs3_xdr_sattrargs(struct rpc_rqst *req, __be32 *p, struct nfs3_sattrargs *args) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | { |
| 287 | p = xdr_encode_fhandle(p, args->fh); |
| 288 | p = xdr_encode_sattr(p, args->sattr); |
| 289 | *p++ = htonl(args->guard); |
| 290 | if (args->guard) |
| 291 | p = xdr_encode_time3(p, &args->guardtime); |
| 292 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
| 293 | return 0; |
| 294 | } |
| 295 | |
| 296 | /* |
| 297 | * Encode directory ops argument |
| 298 | */ |
| 299 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 300 | nfs3_xdr_diropargs(struct rpc_rqst *req, __be32 *p, struct nfs3_diropargs *args) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | { |
| 302 | p = xdr_encode_fhandle(p, args->fh); |
| 303 | p = xdr_encode_array(p, args->name, args->len); |
| 304 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
| 305 | return 0; |
| 306 | } |
| 307 | |
| 308 | /* |
Trond Myklebust | 4fdc17b | 2007-07-14 15:39:57 -0400 | [diff] [blame] | 309 | * Encode REMOVE argument |
| 310 | */ |
| 311 | static int |
| 312 | nfs3_xdr_removeargs(struct rpc_rqst *req, __be32 *p, const struct nfs_removeargs *args) |
| 313 | { |
| 314 | p = xdr_encode_fhandle(p, args->fh); |
| 315 | p = xdr_encode_array(p, args->name.name, args->name.len); |
| 316 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
| 317 | return 0; |
| 318 | } |
| 319 | |
| 320 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 321 | * Encode access() argument |
| 322 | */ |
| 323 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 324 | nfs3_xdr_accessargs(struct rpc_rqst *req, __be32 *p, struct nfs3_accessargs *args) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | { |
| 326 | p = xdr_encode_fhandle(p, args->fh); |
| 327 | *p++ = htonl(args->access); |
| 328 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
| 329 | return 0; |
| 330 | } |
| 331 | |
| 332 | /* |
| 333 | * Arguments to a READ call. Since we read data directly into the page |
| 334 | * cache, we also set up the reply iovec here so that iov[1] points |
| 335 | * exactly to the page we want to fetch. |
| 336 | */ |
| 337 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 338 | nfs3_xdr_readargs(struct rpc_rqst *req, __be32 *p, struct nfs_readargs *args) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | { |
Trond Myklebust | 1be27f3 | 2007-06-27 14:29:04 -0400 | [diff] [blame] | 340 | struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | unsigned int replen; |
| 342 | u32 count = args->count; |
| 343 | |
| 344 | p = xdr_encode_fhandle(p, args->fh); |
| 345 | p = xdr_encode_hyper(p, args->offset); |
| 346 | *p++ = htonl(count); |
| 347 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
| 348 | |
| 349 | /* Inline the page array */ |
| 350 | replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readres_sz) << 2; |
| 351 | xdr_inline_pages(&req->rq_rcv_buf, replen, |
| 352 | args->pages, args->pgbase, count); |
\"Talpey, Thomas\ | 4f22ccc | 2007-09-10 13:44:58 -0400 | [diff] [blame] | 353 | req->rq_rcv_buf.flags |= XDRBUF_READ; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 354 | return 0; |
| 355 | } |
| 356 | |
| 357 | /* |
| 358 | * Write arguments. Splice the buffer to be written into the iovec. |
| 359 | */ |
| 360 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 361 | nfs3_xdr_writeargs(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | { |
| 363 | struct xdr_buf *sndbuf = &req->rq_snd_buf; |
| 364 | u32 count = args->count; |
| 365 | |
| 366 | p = xdr_encode_fhandle(p, args->fh); |
| 367 | p = xdr_encode_hyper(p, args->offset); |
| 368 | *p++ = htonl(count); |
| 369 | *p++ = htonl(args->stable); |
| 370 | *p++ = htonl(count); |
| 371 | sndbuf->len = xdr_adjust_iovec(sndbuf->head, p); |
| 372 | |
| 373 | /* Copy the page array */ |
| 374 | xdr_encode_pages(sndbuf, args->pages, args->pgbase, count); |
\"Talpey, Thomas\ | 4f22ccc | 2007-09-10 13:44:58 -0400 | [diff] [blame] | 375 | sndbuf->flags |= XDRBUF_WRITE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 376 | return 0; |
| 377 | } |
| 378 | |
| 379 | /* |
| 380 | * Encode CREATE arguments |
| 381 | */ |
| 382 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 383 | nfs3_xdr_createargs(struct rpc_rqst *req, __be32 *p, struct nfs3_createargs *args) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | { |
| 385 | p = xdr_encode_fhandle(p, args->fh); |
| 386 | p = xdr_encode_array(p, args->name, args->len); |
| 387 | |
| 388 | *p++ = htonl(args->createmode); |
| 389 | if (args->createmode == NFS3_CREATE_EXCLUSIVE) { |
| 390 | *p++ = args->verifier[0]; |
| 391 | *p++ = args->verifier[1]; |
| 392 | } else |
| 393 | p = xdr_encode_sattr(p, args->sattr); |
| 394 | |
| 395 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
| 396 | return 0; |
| 397 | } |
| 398 | |
| 399 | /* |
| 400 | * Encode MKDIR arguments |
| 401 | */ |
| 402 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 403 | nfs3_xdr_mkdirargs(struct rpc_rqst *req, __be32 *p, struct nfs3_mkdirargs *args) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | { |
| 405 | p = xdr_encode_fhandle(p, args->fh); |
| 406 | p = xdr_encode_array(p, args->name, args->len); |
| 407 | p = xdr_encode_sattr(p, args->sattr); |
| 408 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
| 409 | return 0; |
| 410 | } |
| 411 | |
| 412 | /* |
| 413 | * Encode SYMLINK arguments |
| 414 | */ |
| 415 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 416 | nfs3_xdr_symlinkargs(struct rpc_rqst *req, __be32 *p, struct nfs3_symlinkargs *args) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 417 | { |
| 418 | p = xdr_encode_fhandle(p, args->fromfh); |
| 419 | p = xdr_encode_array(p, args->fromname, args->fromlen); |
| 420 | p = xdr_encode_sattr(p, args->sattr); |
Chuck Lever | 94a6d75 | 2006-08-22 20:06:23 -0400 | [diff] [blame] | 421 | *p++ = htonl(args->pathlen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 422 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
Chuck Lever | 94a6d75 | 2006-08-22 20:06:23 -0400 | [diff] [blame] | 423 | |
| 424 | /* Copy the page */ |
| 425 | xdr_encode_pages(&req->rq_snd_buf, args->pages, 0, args->pathlen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 426 | return 0; |
| 427 | } |
| 428 | |
| 429 | /* |
| 430 | * Encode MKNOD arguments |
| 431 | */ |
| 432 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 433 | nfs3_xdr_mknodargs(struct rpc_rqst *req, __be32 *p, struct nfs3_mknodargs *args) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 434 | { |
| 435 | p = xdr_encode_fhandle(p, args->fh); |
| 436 | p = xdr_encode_array(p, args->name, args->len); |
| 437 | *p++ = htonl(args->type); |
| 438 | p = xdr_encode_sattr(p, args->sattr); |
| 439 | if (args->type == NF3CHR || args->type == NF3BLK) { |
| 440 | *p++ = htonl(MAJOR(args->rdev)); |
| 441 | *p++ = htonl(MINOR(args->rdev)); |
| 442 | } |
| 443 | |
| 444 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
| 445 | return 0; |
| 446 | } |
| 447 | |
| 448 | /* |
| 449 | * Encode RENAME arguments |
| 450 | */ |
| 451 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 452 | nfs3_xdr_renameargs(struct rpc_rqst *req, __be32 *p, struct nfs3_renameargs *args) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 453 | { |
| 454 | p = xdr_encode_fhandle(p, args->fromfh); |
| 455 | p = xdr_encode_array(p, args->fromname, args->fromlen); |
| 456 | p = xdr_encode_fhandle(p, args->tofh); |
| 457 | p = xdr_encode_array(p, args->toname, args->tolen); |
| 458 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
| 459 | return 0; |
| 460 | } |
| 461 | |
| 462 | /* |
| 463 | * Encode LINK arguments |
| 464 | */ |
| 465 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 466 | nfs3_xdr_linkargs(struct rpc_rqst *req, __be32 *p, struct nfs3_linkargs *args) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | { |
| 468 | p = xdr_encode_fhandle(p, args->fromfh); |
| 469 | p = xdr_encode_fhandle(p, args->tofh); |
| 470 | p = xdr_encode_array(p, args->toname, args->tolen); |
| 471 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
| 472 | return 0; |
| 473 | } |
| 474 | |
| 475 | /* |
| 476 | * Encode arguments to readdir call |
| 477 | */ |
| 478 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 479 | nfs3_xdr_readdirargs(struct rpc_rqst *req, __be32 *p, struct nfs3_readdirargs *args) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 480 | { |
Trond Myklebust | 1be27f3 | 2007-06-27 14:29:04 -0400 | [diff] [blame] | 481 | struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 482 | unsigned int replen; |
| 483 | u32 count = args->count; |
| 484 | |
| 485 | p = xdr_encode_fhandle(p, args->fh); |
| 486 | p = xdr_encode_hyper(p, args->cookie); |
| 487 | *p++ = args->verf[0]; |
| 488 | *p++ = args->verf[1]; |
| 489 | if (args->plus) { |
| 490 | /* readdirplus: need dircount + buffer size. |
| 491 | * We just make sure we make dircount big enough */ |
| 492 | *p++ = htonl(count >> 3); |
| 493 | } |
| 494 | *p++ = htonl(count); |
| 495 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
| 496 | |
| 497 | /* Inline the page array */ |
| 498 | replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readdirres_sz) << 2; |
| 499 | xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, 0, count); |
| 500 | return 0; |
| 501 | } |
| 502 | |
| 503 | /* |
| 504 | * Decode the result of a readdir call. |
| 505 | * We just check for syntactical correctness. |
| 506 | */ |
| 507 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 508 | nfs3_xdr_readdirres(struct rpc_rqst *req, __be32 *p, struct nfs3_readdirres *res) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 509 | { |
| 510 | struct xdr_buf *rcvbuf = &req->rq_rcv_buf; |
| 511 | struct kvec *iov = rcvbuf->head; |
| 512 | struct page **page; |
Chuck Lever | c957c52 | 2007-10-26 13:31:57 -0400 | [diff] [blame] | 513 | size_t hdrlen; |
| 514 | u32 len, recvd, pglen; |
Jeff Layton | 643f811 | 2008-02-22 14:50:00 -0500 | [diff] [blame] | 515 | int status, nr = 0; |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 516 | __be32 *entry, *end, *kaddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | |
| 518 | status = ntohl(*p++); |
| 519 | /* Decode post_op_attrs */ |
| 520 | p = xdr_decode_post_op_attr(p, res->dir_attr); |
| 521 | if (status) |
Benny Halevy | 856dff3 | 2008-03-31 17:39:06 +0300 | [diff] [blame] | 522 | return nfs_stat_to_errno(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 523 | /* Decode verifier cookie */ |
| 524 | if (res->verf) { |
| 525 | res->verf[0] = *p++; |
| 526 | res->verf[1] = *p++; |
| 527 | } else { |
| 528 | p += 2; |
| 529 | } |
| 530 | |
| 531 | hdrlen = (u8 *) p - (u8 *) iov->iov_base; |
| 532 | if (iov->iov_len < hdrlen) { |
Chuck Lever | fe82a18 | 2007-09-11 18:01:10 -0400 | [diff] [blame] | 533 | dprintk("NFS: READDIR reply header overflowed:" |
Chuck Lever | c957c52 | 2007-10-26 13:31:57 -0400 | [diff] [blame] | 534 | "length %Zu > %Zu\n", hdrlen, iov->iov_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | return -errno_NFSERR_IO; |
| 536 | } else if (iov->iov_len != hdrlen) { |
| 537 | dprintk("NFS: READDIR header is short. iovec will be shifted.\n"); |
| 538 | xdr_shift_buf(rcvbuf, iov->iov_len - hdrlen); |
| 539 | } |
| 540 | |
| 541 | pglen = rcvbuf->page_len; |
| 542 | recvd = rcvbuf->len - hdrlen; |
| 543 | if (pglen > recvd) |
| 544 | pglen = recvd; |
| 545 | page = rcvbuf->pages; |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 546 | kaddr = p = kmap_atomic(*page, KM_USER0); |
| 547 | end = (__be32 *)((char *)p + pglen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 548 | entry = p; |
Jeff Layton | 643f811 | 2008-02-22 14:50:00 -0500 | [diff] [blame] | 549 | |
| 550 | /* Make sure the packet actually has a value_follows and EOF entry */ |
| 551 | if ((entry + 1) > end) |
| 552 | goto short_pkt; |
| 553 | |
| 554 | for (; *p++; nr++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 555 | if (p + 3 > end) |
| 556 | goto short_pkt; |
| 557 | p += 2; /* inode # */ |
| 558 | len = ntohl(*p++); /* string length */ |
| 559 | p += XDR_QUADLEN(len) + 2; /* name + cookie */ |
| 560 | if (len > NFS3_MAXNAMLEN) { |
Chuck Lever | c957c52 | 2007-10-26 13:31:57 -0400 | [diff] [blame] | 561 | dprintk("NFS: giant filename in readdir (len 0x%x)!\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 562 | len); |
| 563 | goto err_unmap; |
| 564 | } |
| 565 | |
| 566 | if (res->plus) { |
| 567 | /* post_op_attr */ |
| 568 | if (p + 2 > end) |
| 569 | goto short_pkt; |
| 570 | if (*p++) { |
| 571 | p += 21; |
| 572 | if (p + 1 > end) |
| 573 | goto short_pkt; |
| 574 | } |
| 575 | /* post_op_fh3 */ |
| 576 | if (*p++) { |
| 577 | if (p + 1 > end) |
| 578 | goto short_pkt; |
| 579 | len = ntohl(*p++); |
| 580 | if (len > NFS3_FHSIZE) { |
Chuck Lever | fe82a18 | 2007-09-11 18:01:10 -0400 | [diff] [blame] | 581 | dprintk("NFS: giant filehandle in " |
Chuck Lever | c957c52 | 2007-10-26 13:31:57 -0400 | [diff] [blame] | 582 | "readdir (len 0x%x)!\n", len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 583 | goto err_unmap; |
| 584 | } |
| 585 | p += XDR_QUADLEN(len); |
| 586 | } |
| 587 | } |
| 588 | |
| 589 | if (p + 2 > end) |
| 590 | goto short_pkt; |
| 591 | entry = p; |
| 592 | } |
Jeff Layton | 643f811 | 2008-02-22 14:50:00 -0500 | [diff] [blame] | 593 | |
| 594 | /* |
| 595 | * Apparently some server sends responses that are a valid size, but |
| 596 | * contain no entries, and have value_follows==0 and EOF==0. For |
| 597 | * those, just set the EOF marker. |
| 598 | */ |
| 599 | if (!nr && entry[1] == 0) { |
| 600 | dprintk("NFS: readdir reply truncated!\n"); |
| 601 | entry[1] = 1; |
| 602 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 603 | out: |
| 604 | kunmap_atomic(kaddr, KM_USER0); |
| 605 | return nr; |
| 606 | short_pkt: |
Jeff Layton | 643f811 | 2008-02-22 14:50:00 -0500 | [diff] [blame] | 607 | /* |
| 608 | * When we get a short packet there are 2 possibilities. We can |
| 609 | * return an error, or fix up the response to look like a valid |
| 610 | * response and return what we have so far. If there are no |
| 611 | * entries and the packet was short, then return -EIO. If there |
| 612 | * are valid entries in the response, return them and pretend that |
| 613 | * the call was successful, but incomplete. The caller can retry the |
| 614 | * readdir starting at the last cookie. |
| 615 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 616 | entry[0] = entry[1] = 0; |
Jeff Layton | 643f811 | 2008-02-22 14:50:00 -0500 | [diff] [blame] | 617 | if (!nr) |
| 618 | nr = -errno_NFSERR_IO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 619 | goto out; |
| 620 | err_unmap: |
| 621 | nr = -errno_NFSERR_IO; |
| 622 | goto out; |
| 623 | } |
| 624 | |
Al Viro | 0dbb4c6 | 2006-10-19 23:28:49 -0700 | [diff] [blame] | 625 | __be32 * |
| 626 | nfs3_decode_dirent(__be32 *p, struct nfs_entry *entry, int plus) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 627 | { |
| 628 | struct nfs_entry old = *entry; |
| 629 | |
| 630 | if (!*p++) { |
| 631 | if (!*p) |
| 632 | return ERR_PTR(-EAGAIN); |
| 633 | entry->eof = 1; |
| 634 | return ERR_PTR(-EBADCOOKIE); |
| 635 | } |
| 636 | |
| 637 | p = xdr_decode_hyper(p, &entry->ino); |
| 638 | entry->len = ntohl(*p++); |
| 639 | entry->name = (const char *) p; |
| 640 | p += XDR_QUADLEN(entry->len); |
| 641 | entry->prev_cookie = entry->cookie; |
| 642 | p = xdr_decode_hyper(p, &entry->cookie); |
| 643 | |
| 644 | if (plus) { |
| 645 | entry->fattr->valid = 0; |
| 646 | p = xdr_decode_post_op_attr(p, entry->fattr); |
| 647 | /* In fact, a post_op_fh3: */ |
| 648 | if (*p++) { |
| 649 | p = xdr_decode_fhandle(p, entry->fh); |
| 650 | /* Ugh -- server reply was truncated */ |
| 651 | if (p == NULL) { |
| 652 | dprintk("NFS: FH truncated\n"); |
| 653 | *entry = old; |
| 654 | return ERR_PTR(-EAGAIN); |
| 655 | } |
| 656 | } else |
| 657 | memset((u8*)(entry->fh), 0, sizeof(*entry->fh)); |
| 658 | } |
| 659 | |
| 660 | entry->eof = !p[0] && p[1]; |
| 661 | return p; |
| 662 | } |
| 663 | |
| 664 | /* |
| 665 | * Encode COMMIT arguments |
| 666 | */ |
| 667 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 668 | nfs3_xdr_commitargs(struct rpc_rqst *req, __be32 *p, struct nfs_writeargs *args) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 669 | { |
| 670 | p = xdr_encode_fhandle(p, args->fh); |
| 671 | p = xdr_encode_hyper(p, args->offset); |
| 672 | *p++ = htonl(args->count); |
| 673 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
| 674 | return 0; |
| 675 | } |
| 676 | |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 677 | #ifdef CONFIG_NFS_V3_ACL |
| 678 | /* |
| 679 | * Encode GETACL arguments |
| 680 | */ |
| 681 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 682 | nfs3_xdr_getaclargs(struct rpc_rqst *req, __be32 *p, |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 683 | struct nfs3_getaclargs *args) |
| 684 | { |
Trond Myklebust | 1be27f3 | 2007-06-27 14:29:04 -0400 | [diff] [blame] | 685 | struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth; |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 686 | unsigned int replen; |
| 687 | |
| 688 | p = xdr_encode_fhandle(p, args->fh); |
| 689 | *p++ = htonl(args->mask); |
| 690 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
| 691 | |
| 692 | if (args->mask & (NFS_ACL | NFS_DFACL)) { |
| 693 | /* Inline the page array */ |
| 694 | replen = (RPC_REPHDRSIZE + auth->au_rslack + |
| 695 | ACL3_getaclres_sz) << 2; |
| 696 | xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, 0, |
| 697 | NFSACL_MAXPAGES << PAGE_SHIFT); |
| 698 | } |
| 699 | return 0; |
| 700 | } |
| 701 | |
| 702 | /* |
| 703 | * Encode SETACL arguments |
| 704 | */ |
| 705 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 706 | nfs3_xdr_setaclargs(struct rpc_rqst *req, __be32 *p, |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 707 | struct nfs3_setaclargs *args) |
| 708 | { |
| 709 | struct xdr_buf *buf = &req->rq_snd_buf; |
Trond Myklebust | ae46141 | 2009-03-10 20:33:18 -0400 | [diff] [blame] | 710 | unsigned int base; |
| 711 | int err; |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 712 | |
| 713 | p = xdr_encode_fhandle(p, NFS_FH(args->inode)); |
| 714 | *p++ = htonl(args->mask); |
Trond Myklebust | ae46141 | 2009-03-10 20:33:18 -0400 | [diff] [blame] | 715 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
| 716 | base = req->rq_slen; |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 717 | |
Trond Myklebust | ae46141 | 2009-03-10 20:33:18 -0400 | [diff] [blame] | 718 | if (args->npages != 0) |
| 719 | xdr_encode_pages(buf, args->pages, 0, args->len); |
| 720 | else |
| 721 | req->rq_slen += args->len; |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 722 | |
| 723 | err = nfsacl_encode(buf, base, args->inode, |
| 724 | (args->mask & NFS_ACL) ? |
| 725 | args->acl_access : NULL, 1, 0); |
| 726 | if (err > 0) |
| 727 | err = nfsacl_encode(buf, base + err, args->inode, |
| 728 | (args->mask & NFS_DFACL) ? |
| 729 | args->acl_default : NULL, 1, |
| 730 | NFS_ACL_DEFAULT); |
| 731 | return (err > 0) ? 0 : err; |
| 732 | } |
| 733 | #endif /* CONFIG_NFS_V3_ACL */ |
| 734 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 735 | /* |
| 736 | * NFS XDR decode functions |
| 737 | */ |
| 738 | |
| 739 | /* |
| 740 | * Decode attrstat reply. |
| 741 | */ |
| 742 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 743 | nfs3_xdr_attrstat(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 744 | { |
| 745 | int status; |
| 746 | |
| 747 | if ((status = ntohl(*p++))) |
Benny Halevy | 856dff3 | 2008-03-31 17:39:06 +0300 | [diff] [blame] | 748 | return nfs_stat_to_errno(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 749 | xdr_decode_fattr(p, fattr); |
| 750 | return 0; |
| 751 | } |
| 752 | |
| 753 | /* |
| 754 | * Decode status+wcc_data reply |
| 755 | * SATTR, REMOVE, RMDIR |
| 756 | */ |
| 757 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 758 | nfs3_xdr_wccstat(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 759 | { |
| 760 | int status; |
| 761 | |
| 762 | if ((status = ntohl(*p++))) |
Benny Halevy | 856dff3 | 2008-03-31 17:39:06 +0300 | [diff] [blame] | 763 | status = nfs_stat_to_errno(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 764 | xdr_decode_wcc_data(p, fattr); |
| 765 | return status; |
| 766 | } |
| 767 | |
Trond Myklebust | 4fdc17b | 2007-07-14 15:39:57 -0400 | [diff] [blame] | 768 | static int |
| 769 | nfs3_xdr_removeres(struct rpc_rqst *req, __be32 *p, struct nfs_removeres *res) |
| 770 | { |
| 771 | return nfs3_xdr_wccstat(req, p, &res->dir_attr); |
| 772 | } |
| 773 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 774 | /* |
| 775 | * Decode LOOKUP reply |
| 776 | */ |
| 777 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 778 | nfs3_xdr_lookupres(struct rpc_rqst *req, __be32 *p, struct nfs3_diropres *res) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 779 | { |
| 780 | int status; |
| 781 | |
| 782 | if ((status = ntohl(*p++))) { |
Benny Halevy | 856dff3 | 2008-03-31 17:39:06 +0300 | [diff] [blame] | 783 | status = nfs_stat_to_errno(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 784 | } else { |
| 785 | if (!(p = xdr_decode_fhandle(p, res->fh))) |
| 786 | return -errno_NFSERR_IO; |
| 787 | p = xdr_decode_post_op_attr(p, res->fattr); |
| 788 | } |
| 789 | xdr_decode_post_op_attr(p, res->dir_attr); |
| 790 | return status; |
| 791 | } |
| 792 | |
| 793 | /* |
| 794 | * Decode ACCESS reply |
| 795 | */ |
| 796 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 797 | nfs3_xdr_accessres(struct rpc_rqst *req, __be32 *p, struct nfs3_accessres *res) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 798 | { |
| 799 | int status = ntohl(*p++); |
| 800 | |
| 801 | p = xdr_decode_post_op_attr(p, res->fattr); |
| 802 | if (status) |
Benny Halevy | 856dff3 | 2008-03-31 17:39:06 +0300 | [diff] [blame] | 803 | return nfs_stat_to_errno(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 804 | res->access = ntohl(*p++); |
| 805 | return 0; |
| 806 | } |
| 807 | |
| 808 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 809 | nfs3_xdr_readlinkargs(struct rpc_rqst *req, __be32 *p, struct nfs3_readlinkargs *args) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 810 | { |
Trond Myklebust | 1be27f3 | 2007-06-27 14:29:04 -0400 | [diff] [blame] | 811 | struct rpc_auth *auth = req->rq_task->tk_msg.rpc_cred->cr_auth; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 812 | unsigned int replen; |
| 813 | |
| 814 | p = xdr_encode_fhandle(p, args->fh); |
| 815 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
| 816 | |
| 817 | /* Inline the page array */ |
| 818 | replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readlinkres_sz) << 2; |
| 819 | xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, args->pgbase, args->pglen); |
| 820 | return 0; |
| 821 | } |
| 822 | |
| 823 | /* |
| 824 | * Decode READLINK reply |
| 825 | */ |
| 826 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 827 | nfs3_xdr_readlinkres(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 828 | { |
| 829 | struct xdr_buf *rcvbuf = &req->rq_rcv_buf; |
| 830 | struct kvec *iov = rcvbuf->head; |
Chuck Lever | c957c52 | 2007-10-26 13:31:57 -0400 | [diff] [blame] | 831 | size_t hdrlen; |
| 832 | u32 len, recvd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 833 | char *kaddr; |
| 834 | int status; |
| 835 | |
| 836 | status = ntohl(*p++); |
| 837 | p = xdr_decode_post_op_attr(p, fattr); |
| 838 | |
| 839 | if (status != 0) |
Benny Halevy | 856dff3 | 2008-03-31 17:39:06 +0300 | [diff] [blame] | 840 | return nfs_stat_to_errno(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 841 | |
| 842 | /* Convert length of symlink */ |
| 843 | len = ntohl(*p++); |
Chuck Lever | c957c52 | 2007-10-26 13:31:57 -0400 | [diff] [blame] | 844 | if (len >= rcvbuf->page_len) { |
Chuck Lever | fe82a18 | 2007-09-11 18:01:10 -0400 | [diff] [blame] | 845 | dprintk("nfs: server returned giant symlink!\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 846 | return -ENAMETOOLONG; |
| 847 | } |
| 848 | |
| 849 | hdrlen = (u8 *) p - (u8 *) iov->iov_base; |
| 850 | if (iov->iov_len < hdrlen) { |
Chuck Lever | fe82a18 | 2007-09-11 18:01:10 -0400 | [diff] [blame] | 851 | dprintk("NFS: READLINK reply header overflowed:" |
Chuck Lever | c957c52 | 2007-10-26 13:31:57 -0400 | [diff] [blame] | 852 | "length %Zu > %Zu\n", hdrlen, iov->iov_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 853 | return -errno_NFSERR_IO; |
| 854 | } else if (iov->iov_len != hdrlen) { |
Chuck Lever | fe82a18 | 2007-09-11 18:01:10 -0400 | [diff] [blame] | 855 | dprintk("NFS: READLINK header is short. " |
| 856 | "iovec will be shifted.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 857 | xdr_shift_buf(rcvbuf, iov->iov_len - hdrlen); |
| 858 | } |
| 859 | recvd = req->rq_rcv_buf.len - hdrlen; |
| 860 | if (recvd < len) { |
Chuck Lever | fe82a18 | 2007-09-11 18:01:10 -0400 | [diff] [blame] | 861 | dprintk("NFS: server cheating in readlink reply: " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 862 | "count %u > recvd %u\n", len, recvd); |
| 863 | return -EIO; |
| 864 | } |
| 865 | |
| 866 | /* NULL terminate the string we got */ |
| 867 | kaddr = (char*)kmap_atomic(rcvbuf->pages[0], KM_USER0); |
| 868 | kaddr[len+rcvbuf->page_base] = '\0'; |
| 869 | kunmap_atomic(kaddr, KM_USER0); |
| 870 | return 0; |
| 871 | } |
| 872 | |
| 873 | /* |
| 874 | * Decode READ reply |
| 875 | */ |
| 876 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 877 | nfs3_xdr_readres(struct rpc_rqst *req, __be32 *p, struct nfs_readres *res) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 878 | { |
| 879 | struct kvec *iov = req->rq_rcv_buf.head; |
Chuck Lever | c957c52 | 2007-10-26 13:31:57 -0400 | [diff] [blame] | 880 | size_t hdrlen; |
| 881 | u32 count, ocount, recvd; |
| 882 | int status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 883 | |
| 884 | status = ntohl(*p++); |
| 885 | p = xdr_decode_post_op_attr(p, res->fattr); |
| 886 | |
| 887 | if (status != 0) |
Benny Halevy | 856dff3 | 2008-03-31 17:39:06 +0300 | [diff] [blame] | 888 | return nfs_stat_to_errno(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 889 | |
Chuck Lever | c957c52 | 2007-10-26 13:31:57 -0400 | [diff] [blame] | 890 | /* Decode reply count and EOF flag. NFSv3 is somewhat redundant |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 891 | * in that it puts the count both in the res struct and in the |
| 892 | * opaque data count. */ |
| 893 | count = ntohl(*p++); |
| 894 | res->eof = ntohl(*p++); |
| 895 | ocount = ntohl(*p++); |
| 896 | |
| 897 | if (ocount != count) { |
Chuck Lever | fe82a18 | 2007-09-11 18:01:10 -0400 | [diff] [blame] | 898 | dprintk("NFS: READ count doesn't match RPC opaque count.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 899 | return -errno_NFSERR_IO; |
| 900 | } |
| 901 | |
| 902 | hdrlen = (u8 *) p - (u8 *) iov->iov_base; |
| 903 | if (iov->iov_len < hdrlen) { |
Chuck Lever | fe82a18 | 2007-09-11 18:01:10 -0400 | [diff] [blame] | 904 | dprintk("NFS: READ reply header overflowed:" |
Chuck Lever | c957c52 | 2007-10-26 13:31:57 -0400 | [diff] [blame] | 905 | "length %Zu > %Zu\n", hdrlen, iov->iov_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 906 | return -errno_NFSERR_IO; |
| 907 | } else if (iov->iov_len != hdrlen) { |
| 908 | dprintk("NFS: READ header is short. iovec will be shifted.\n"); |
| 909 | xdr_shift_buf(&req->rq_rcv_buf, iov->iov_len - hdrlen); |
| 910 | } |
| 911 | |
| 912 | recvd = req->rq_rcv_buf.len - hdrlen; |
| 913 | if (count > recvd) { |
Chuck Lever | fe82a18 | 2007-09-11 18:01:10 -0400 | [diff] [blame] | 914 | dprintk("NFS: server cheating in read reply: " |
Chuck Lever | c957c52 | 2007-10-26 13:31:57 -0400 | [diff] [blame] | 915 | "count %u > recvd %u\n", count, recvd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 916 | count = recvd; |
| 917 | res->eof = 0; |
| 918 | } |
| 919 | |
| 920 | if (count < res->count) |
| 921 | res->count = count; |
| 922 | |
| 923 | return count; |
| 924 | } |
| 925 | |
| 926 | /* |
| 927 | * Decode WRITE response |
| 928 | */ |
| 929 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 930 | nfs3_xdr_writeres(struct rpc_rqst *req, __be32 *p, struct nfs_writeres *res) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 931 | { |
| 932 | int status; |
| 933 | |
| 934 | status = ntohl(*p++); |
| 935 | p = xdr_decode_wcc_data(p, res->fattr); |
| 936 | |
| 937 | if (status != 0) |
Benny Halevy | 856dff3 | 2008-03-31 17:39:06 +0300 | [diff] [blame] | 938 | return nfs_stat_to_errno(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 939 | |
| 940 | res->count = ntohl(*p++); |
| 941 | res->verf->committed = (enum nfs3_stable_how)ntohl(*p++); |
| 942 | res->verf->verifier[0] = *p++; |
| 943 | res->verf->verifier[1] = *p++; |
| 944 | |
| 945 | return res->count; |
| 946 | } |
| 947 | |
| 948 | /* |
| 949 | * Decode a CREATE response |
| 950 | */ |
| 951 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 952 | nfs3_xdr_createres(struct rpc_rqst *req, __be32 *p, struct nfs3_diropres *res) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 953 | { |
| 954 | int status; |
| 955 | |
| 956 | status = ntohl(*p++); |
| 957 | if (status == 0) { |
| 958 | if (*p++) { |
| 959 | if (!(p = xdr_decode_fhandle(p, res->fh))) |
| 960 | return -errno_NFSERR_IO; |
| 961 | p = xdr_decode_post_op_attr(p, res->fattr); |
| 962 | } else { |
| 963 | memset(res->fh, 0, sizeof(*res->fh)); |
| 964 | /* Do decode post_op_attr but set it to NULL */ |
| 965 | p = xdr_decode_post_op_attr(p, res->fattr); |
| 966 | res->fattr->valid = 0; |
| 967 | } |
| 968 | } else { |
Benny Halevy | 856dff3 | 2008-03-31 17:39:06 +0300 | [diff] [blame] | 969 | status = nfs_stat_to_errno(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 970 | } |
| 971 | p = xdr_decode_wcc_data(p, res->dir_attr); |
| 972 | return status; |
| 973 | } |
| 974 | |
| 975 | /* |
| 976 | * Decode RENAME reply |
| 977 | */ |
| 978 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 979 | nfs3_xdr_renameres(struct rpc_rqst *req, __be32 *p, struct nfs3_renameres *res) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 980 | { |
| 981 | int status; |
| 982 | |
| 983 | if ((status = ntohl(*p++)) != 0) |
Benny Halevy | 856dff3 | 2008-03-31 17:39:06 +0300 | [diff] [blame] | 984 | status = nfs_stat_to_errno(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 985 | p = xdr_decode_wcc_data(p, res->fromattr); |
| 986 | p = xdr_decode_wcc_data(p, res->toattr); |
| 987 | return status; |
| 988 | } |
| 989 | |
| 990 | /* |
| 991 | * Decode LINK reply |
| 992 | */ |
| 993 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 994 | nfs3_xdr_linkres(struct rpc_rqst *req, __be32 *p, struct nfs3_linkres *res) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 995 | { |
| 996 | int status; |
| 997 | |
| 998 | if ((status = ntohl(*p++)) != 0) |
Benny Halevy | 856dff3 | 2008-03-31 17:39:06 +0300 | [diff] [blame] | 999 | status = nfs_stat_to_errno(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1000 | p = xdr_decode_post_op_attr(p, res->fattr); |
| 1001 | p = xdr_decode_wcc_data(p, res->dir_attr); |
| 1002 | return status; |
| 1003 | } |
| 1004 | |
| 1005 | /* |
| 1006 | * Decode FSSTAT reply |
| 1007 | */ |
| 1008 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 1009 | nfs3_xdr_fsstatres(struct rpc_rqst *req, __be32 *p, struct nfs_fsstat *res) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1010 | { |
| 1011 | int status; |
| 1012 | |
| 1013 | status = ntohl(*p++); |
| 1014 | |
| 1015 | p = xdr_decode_post_op_attr(p, res->fattr); |
| 1016 | if (status != 0) |
Benny Halevy | 856dff3 | 2008-03-31 17:39:06 +0300 | [diff] [blame] | 1017 | return nfs_stat_to_errno(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1018 | |
| 1019 | p = xdr_decode_hyper(p, &res->tbytes); |
| 1020 | p = xdr_decode_hyper(p, &res->fbytes); |
| 1021 | p = xdr_decode_hyper(p, &res->abytes); |
| 1022 | p = xdr_decode_hyper(p, &res->tfiles); |
| 1023 | p = xdr_decode_hyper(p, &res->ffiles); |
| 1024 | p = xdr_decode_hyper(p, &res->afiles); |
| 1025 | |
| 1026 | /* ignore invarsec */ |
| 1027 | return 0; |
| 1028 | } |
| 1029 | |
| 1030 | /* |
| 1031 | * Decode FSINFO reply |
| 1032 | */ |
| 1033 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 1034 | nfs3_xdr_fsinfores(struct rpc_rqst *req, __be32 *p, struct nfs_fsinfo *res) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1035 | { |
| 1036 | int status; |
| 1037 | |
| 1038 | status = ntohl(*p++); |
| 1039 | |
| 1040 | p = xdr_decode_post_op_attr(p, res->fattr); |
| 1041 | if (status != 0) |
Benny Halevy | 856dff3 | 2008-03-31 17:39:06 +0300 | [diff] [blame] | 1042 | return nfs_stat_to_errno(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1043 | |
| 1044 | res->rtmax = ntohl(*p++); |
| 1045 | res->rtpref = ntohl(*p++); |
| 1046 | res->rtmult = ntohl(*p++); |
| 1047 | res->wtmax = ntohl(*p++); |
| 1048 | res->wtpref = ntohl(*p++); |
| 1049 | res->wtmult = ntohl(*p++); |
| 1050 | res->dtpref = ntohl(*p++); |
| 1051 | p = xdr_decode_hyper(p, &res->maxfilesize); |
| 1052 | |
| 1053 | /* ignore time_delta and properties */ |
| 1054 | res->lease_time = 0; |
| 1055 | return 0; |
| 1056 | } |
| 1057 | |
| 1058 | /* |
| 1059 | * Decode PATHCONF reply |
| 1060 | */ |
| 1061 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 1062 | nfs3_xdr_pathconfres(struct rpc_rqst *req, __be32 *p, struct nfs_pathconf *res) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1063 | { |
| 1064 | int status; |
| 1065 | |
| 1066 | status = ntohl(*p++); |
| 1067 | |
| 1068 | p = xdr_decode_post_op_attr(p, res->fattr); |
| 1069 | if (status != 0) |
Benny Halevy | 856dff3 | 2008-03-31 17:39:06 +0300 | [diff] [blame] | 1070 | return nfs_stat_to_errno(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1071 | res->max_link = ntohl(*p++); |
| 1072 | res->max_namelen = ntohl(*p++); |
| 1073 | |
| 1074 | /* ignore remaining fields */ |
| 1075 | return 0; |
| 1076 | } |
| 1077 | |
| 1078 | /* |
| 1079 | * Decode COMMIT reply |
| 1080 | */ |
| 1081 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 1082 | nfs3_xdr_commitres(struct rpc_rqst *req, __be32 *p, struct nfs_writeres *res) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1083 | { |
| 1084 | int status; |
| 1085 | |
| 1086 | status = ntohl(*p++); |
| 1087 | p = xdr_decode_wcc_data(p, res->fattr); |
| 1088 | if (status != 0) |
Benny Halevy | 856dff3 | 2008-03-31 17:39:06 +0300 | [diff] [blame] | 1089 | return nfs_stat_to_errno(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1090 | |
| 1091 | res->verf->verifier[0] = *p++; |
| 1092 | res->verf->verifier[1] = *p++; |
| 1093 | return 0; |
| 1094 | } |
| 1095 | |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 1096 | #ifdef CONFIG_NFS_V3_ACL |
| 1097 | /* |
| 1098 | * Decode GETACL reply |
| 1099 | */ |
| 1100 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 1101 | nfs3_xdr_getaclres(struct rpc_rqst *req, __be32 *p, |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 1102 | struct nfs3_getaclres *res) |
| 1103 | { |
| 1104 | struct xdr_buf *buf = &req->rq_rcv_buf; |
| 1105 | int status = ntohl(*p++); |
| 1106 | struct posix_acl **acl; |
| 1107 | unsigned int *aclcnt; |
| 1108 | int err, base; |
| 1109 | |
| 1110 | if (status != 0) |
Benny Halevy | 856dff3 | 2008-03-31 17:39:06 +0300 | [diff] [blame] | 1111 | return nfs_stat_to_errno(status); |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 1112 | p = xdr_decode_post_op_attr(p, res->fattr); |
| 1113 | res->mask = ntohl(*p++); |
| 1114 | if (res->mask & ~(NFS_ACL|NFS_ACLCNT|NFS_DFACL|NFS_DFACLCNT)) |
| 1115 | return -EINVAL; |
| 1116 | base = (char *)p - (char *)req->rq_rcv_buf.head->iov_base; |
| 1117 | |
| 1118 | acl = (res->mask & NFS_ACL) ? &res->acl_access : NULL; |
| 1119 | aclcnt = (res->mask & NFS_ACLCNT) ? &res->acl_access_count : NULL; |
| 1120 | err = nfsacl_decode(buf, base, aclcnt, acl); |
| 1121 | |
| 1122 | acl = (res->mask & NFS_DFACL) ? &res->acl_default : NULL; |
| 1123 | aclcnt = (res->mask & NFS_DFACLCNT) ? &res->acl_default_count : NULL; |
| 1124 | if (err > 0) |
| 1125 | err = nfsacl_decode(buf, base + err, aclcnt, acl); |
| 1126 | return (err > 0) ? 0 : err; |
| 1127 | } |
| 1128 | |
| 1129 | /* |
| 1130 | * Decode setacl reply. |
| 1131 | */ |
| 1132 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 1133 | nfs3_xdr_setaclres(struct rpc_rqst *req, __be32 *p, struct nfs_fattr *fattr) |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 1134 | { |
| 1135 | int status = ntohl(*p++); |
| 1136 | |
| 1137 | if (status) |
Benny Halevy | 856dff3 | 2008-03-31 17:39:06 +0300 | [diff] [blame] | 1138 | return nfs_stat_to_errno(status); |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 1139 | xdr_decode_post_op_attr(p, fattr); |
| 1140 | return 0; |
| 1141 | } |
| 1142 | #endif /* CONFIG_NFS_V3_ACL */ |
| 1143 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1144 | #define PROC(proc, argtype, restype, timer) \ |
| 1145 | [NFS3PROC_##proc] = { \ |
| 1146 | .p_proc = NFS3PROC_##proc, \ |
| 1147 | .p_encode = (kxdrproc_t) nfs3_xdr_##argtype, \ |
| 1148 | .p_decode = (kxdrproc_t) nfs3_xdr_##restype, \ |
Chuck Lever | 2bea90d | 2007-03-29 16:47:53 -0400 | [diff] [blame] | 1149 | .p_arglen = NFS3_##argtype##_sz, \ |
| 1150 | .p_replen = NFS3_##restype##_sz, \ |
Chuck Lever | cc0175c | 2006-03-20 13:44:22 -0500 | [diff] [blame] | 1151 | .p_timer = timer, \ |
| 1152 | .p_statidx = NFS3PROC_##proc, \ |
| 1153 | .p_name = #proc, \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1154 | } |
| 1155 | |
| 1156 | struct rpc_procinfo nfs3_procedures[] = { |
| 1157 | PROC(GETATTR, fhandle, attrstat, 1), |
| 1158 | PROC(SETATTR, sattrargs, wccstat, 0), |
| 1159 | PROC(LOOKUP, diropargs, lookupres, 2), |
| 1160 | PROC(ACCESS, accessargs, accessres, 1), |
| 1161 | PROC(READLINK, readlinkargs, readlinkres, 3), |
| 1162 | PROC(READ, readargs, readres, 3), |
| 1163 | PROC(WRITE, writeargs, writeres, 4), |
| 1164 | PROC(CREATE, createargs, createres, 0), |
| 1165 | PROC(MKDIR, mkdirargs, createres, 0), |
| 1166 | PROC(SYMLINK, symlinkargs, createres, 0), |
| 1167 | PROC(MKNOD, mknodargs, createres, 0), |
Trond Myklebust | 4fdc17b | 2007-07-14 15:39:57 -0400 | [diff] [blame] | 1168 | PROC(REMOVE, removeargs, removeres, 0), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1169 | PROC(RMDIR, diropargs, wccstat, 0), |
| 1170 | PROC(RENAME, renameargs, renameres, 0), |
| 1171 | PROC(LINK, linkargs, linkres, 0), |
| 1172 | PROC(READDIR, readdirargs, readdirres, 3), |
| 1173 | PROC(READDIRPLUS, readdirargs, readdirres, 3), |
| 1174 | PROC(FSSTAT, fhandle, fsstatres, 0), |
| 1175 | PROC(FSINFO, fhandle, fsinfores, 0), |
| 1176 | PROC(PATHCONF, fhandle, pathconfres, 0), |
| 1177 | PROC(COMMIT, commitargs, commitres, 5), |
| 1178 | }; |
| 1179 | |
| 1180 | struct rpc_version nfs_version3 = { |
| 1181 | .number = 3, |
Tobias Klauser | e8c96f8 | 2006-03-24 03:15:34 -0800 | [diff] [blame] | 1182 | .nrprocs = ARRAY_SIZE(nfs3_procedures), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1183 | .procs = nfs3_procedures |
| 1184 | }; |
| 1185 | |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 1186 | #ifdef CONFIG_NFS_V3_ACL |
| 1187 | static struct rpc_procinfo nfs3_acl_procedures[] = { |
| 1188 | [ACLPROC3_GETACL] = { |
| 1189 | .p_proc = ACLPROC3_GETACL, |
| 1190 | .p_encode = (kxdrproc_t) nfs3_xdr_getaclargs, |
| 1191 | .p_decode = (kxdrproc_t) nfs3_xdr_getaclres, |
Chuck Lever | 2bea90d | 2007-03-29 16:47:53 -0400 | [diff] [blame] | 1192 | .p_arglen = ACL3_getaclargs_sz, |
| 1193 | .p_replen = ACL3_getaclres_sz, |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 1194 | .p_timer = 1, |
Chuck Lever | cc0175c | 2006-03-20 13:44:22 -0500 | [diff] [blame] | 1195 | .p_name = "GETACL", |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 1196 | }, |
| 1197 | [ACLPROC3_SETACL] = { |
| 1198 | .p_proc = ACLPROC3_SETACL, |
| 1199 | .p_encode = (kxdrproc_t) nfs3_xdr_setaclargs, |
| 1200 | .p_decode = (kxdrproc_t) nfs3_xdr_setaclres, |
Chuck Lever | 2bea90d | 2007-03-29 16:47:53 -0400 | [diff] [blame] | 1201 | .p_arglen = ACL3_setaclargs_sz, |
| 1202 | .p_replen = ACL3_setaclres_sz, |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 1203 | .p_timer = 0, |
Chuck Lever | cc0175c | 2006-03-20 13:44:22 -0500 | [diff] [blame] | 1204 | .p_name = "SETACL", |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 1205 | }, |
| 1206 | }; |
| 1207 | |
| 1208 | struct rpc_version nfsacl_version3 = { |
| 1209 | .number = 3, |
| 1210 | .nrprocs = sizeof(nfs3_acl_procedures)/ |
| 1211 | sizeof(nfs3_acl_procedures[0]), |
| 1212 | .procs = nfs3_acl_procedures, |
| 1213 | }; |
| 1214 | #endif /* CONFIG_NFS_V3_ACL */ |