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> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 12 | #include <linux/errno.h> |
| 13 | #include <linux/string.h> |
| 14 | #include <linux/in.h> |
| 15 | #include <linux/pagemap.h> |
| 16 | #include <linux/proc_fs.h> |
| 17 | #include <linux/kdev_t.h> |
| 18 | #include <linux/sunrpc/clnt.h> |
| 19 | #include <linux/nfs.h> |
| 20 | #include <linux/nfs3.h> |
| 21 | #include <linux/nfs_fs.h> |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 22 | #include <linux/nfsacl.h> |
David Howells | f7b422b | 2006-06-09 09:34:33 -0400 | [diff] [blame] | 23 | #include "internal.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | |
| 25 | #define NFSDBG_FACILITY NFSDBG_XDR |
| 26 | |
| 27 | /* Mapping from NFS error code to "errno" error code. */ |
| 28 | #define errno_NFSERR_IO EIO |
| 29 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | /* |
| 31 | * Declare the space requirements for NFS arguments and replies as |
| 32 | * number of 32bit-words |
| 33 | */ |
| 34 | #define NFS3_fhandle_sz (1+16) |
| 35 | #define NFS3_fh_sz (NFS3_fhandle_sz) /* shorthand */ |
| 36 | #define NFS3_sattr_sz (15) |
| 37 | #define NFS3_filename_sz (1+(NFS3_MAXNAMLEN>>2)) |
| 38 | #define NFS3_path_sz (1+(NFS3_MAXPATHLEN>>2)) |
| 39 | #define NFS3_fattr_sz (21) |
| 40 | #define NFS3_wcc_attr_sz (6) |
| 41 | #define NFS3_pre_op_attr_sz (1+NFS3_wcc_attr_sz) |
| 42 | #define NFS3_post_op_attr_sz (1+NFS3_fattr_sz) |
| 43 | #define NFS3_wcc_data_sz (NFS3_pre_op_attr_sz+NFS3_post_op_attr_sz) |
| 44 | #define NFS3_fsstat_sz |
| 45 | #define NFS3_fsinfo_sz |
| 46 | #define NFS3_pathconf_sz |
| 47 | #define NFS3_entry_sz (NFS3_filename_sz+3) |
| 48 | |
| 49 | #define NFS3_sattrargs_sz (NFS3_fh_sz+NFS3_sattr_sz+3) |
| 50 | #define NFS3_diropargs_sz (NFS3_fh_sz+NFS3_filename_sz) |
Trond Myklebust | 4fdc17b | 2007-07-14 15:39:57 -0400 | [diff] [blame] | 51 | #define NFS3_removeargs_sz (NFS3_fh_sz+NFS3_filename_sz) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | #define NFS3_accessargs_sz (NFS3_fh_sz+1) |
| 53 | #define NFS3_readlinkargs_sz (NFS3_fh_sz) |
| 54 | #define NFS3_readargs_sz (NFS3_fh_sz+3) |
| 55 | #define NFS3_writeargs_sz (NFS3_fh_sz+5) |
| 56 | #define NFS3_createargs_sz (NFS3_diropargs_sz+NFS3_sattr_sz) |
| 57 | #define NFS3_mkdirargs_sz (NFS3_diropargs_sz+NFS3_sattr_sz) |
Chuck Lever | 94a6d75 | 2006-08-22 20:06:23 -0400 | [diff] [blame] | 58 | #define NFS3_symlinkargs_sz (NFS3_diropargs_sz+1+NFS3_sattr_sz) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | #define NFS3_mknodargs_sz (NFS3_diropargs_sz+2+NFS3_sattr_sz) |
| 60 | #define NFS3_renameargs_sz (NFS3_diropargs_sz+NFS3_diropargs_sz) |
| 61 | #define NFS3_linkargs_sz (NFS3_fh_sz+NFS3_diropargs_sz) |
| 62 | #define NFS3_readdirargs_sz (NFS3_fh_sz+2) |
| 63 | #define NFS3_commitargs_sz (NFS3_fh_sz+3) |
| 64 | |
| 65 | #define NFS3_attrstat_sz (1+NFS3_fattr_sz) |
| 66 | #define NFS3_wccstat_sz (1+NFS3_wcc_data_sz) |
Trond Myklebust | 4fdc17b | 2007-07-14 15:39:57 -0400 | [diff] [blame] | 67 | #define NFS3_removeres_sz (NFS3_wccstat_sz) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | #define NFS3_lookupres_sz (1+NFS3_fh_sz+(2 * NFS3_post_op_attr_sz)) |
| 69 | #define NFS3_accessres_sz (1+NFS3_post_op_attr_sz+1) |
| 70 | #define NFS3_readlinkres_sz (1+NFS3_post_op_attr_sz+1) |
| 71 | #define NFS3_readres_sz (1+NFS3_post_op_attr_sz+3) |
| 72 | #define NFS3_writeres_sz (1+NFS3_wcc_data_sz+4) |
| 73 | #define NFS3_createres_sz (1+NFS3_fh_sz+NFS3_post_op_attr_sz+NFS3_wcc_data_sz) |
| 74 | #define NFS3_renameres_sz (1+(2 * NFS3_wcc_data_sz)) |
| 75 | #define NFS3_linkres_sz (1+NFS3_post_op_attr_sz+NFS3_wcc_data_sz) |
| 76 | #define NFS3_readdirres_sz (1+NFS3_post_op_attr_sz+2) |
| 77 | #define NFS3_fsstatres_sz (1+NFS3_post_op_attr_sz+13) |
| 78 | #define NFS3_fsinfores_sz (1+NFS3_post_op_attr_sz+12) |
| 79 | #define NFS3_pathconfres_sz (1+NFS3_post_op_attr_sz+6) |
| 80 | #define NFS3_commitres_sz (1+NFS3_wcc_data_sz+2) |
| 81 | |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 82 | #define ACL3_getaclargs_sz (NFS3_fh_sz+1) |
Trond Myklebust | ae46141 | 2009-03-10 20:33:18 -0400 | [diff] [blame] | 83 | #define ACL3_setaclargs_sz (NFS3_fh_sz+1+ \ |
| 84 | XDR_QUADLEN(NFS_ACL_INLINE_BUFSIZE)) |
| 85 | #define ACL3_getaclres_sz (1+NFS3_post_op_attr_sz+1+ \ |
| 86 | XDR_QUADLEN(NFS_ACL_INLINE_BUFSIZE)) |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 87 | #define ACL3_setaclres_sz (1+NFS3_post_op_attr_sz) |
| 88 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | /* |
| 90 | * Map file type to S_IFMT bits |
| 91 | */ |
Trond Myklebust | bca7947 | 2009-03-11 14:10:26 -0400 | [diff] [blame] | 92 | static const umode_t nfs_type2fmt[] = { |
| 93 | [NF3BAD] = 0, |
| 94 | [NF3REG] = S_IFREG, |
| 95 | [NF3DIR] = S_IFDIR, |
| 96 | [NF3BLK] = S_IFBLK, |
| 97 | [NF3CHR] = S_IFCHR, |
| 98 | [NF3LNK] = S_IFLNK, |
| 99 | [NF3SOCK] = S_IFSOCK, |
| 100 | [NF3FIFO] = S_IFIFO, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 101 | }; |
| 102 | |
| 103 | /* |
| 104 | * Common NFS XDR functions as inlines |
| 105 | */ |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 106 | static inline __be32 * |
Trond Myklebust | 4fdc17b | 2007-07-14 15:39:57 -0400 | [diff] [blame] | 107 | xdr_encode_fhandle(__be32 *p, const struct nfs_fh *fh) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | { |
| 109 | return xdr_encode_array(p, fh->data, fh->size); |
| 110 | } |
| 111 | |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 112 | static inline __be32 * |
| 113 | xdr_decode_fhandle(__be32 *p, struct nfs_fh *fh) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | { |
| 115 | if ((fh->size = ntohl(*p++)) <= NFS3_FHSIZE) { |
| 116 | memcpy(fh->data, p, fh->size); |
| 117 | return p + XDR_QUADLEN(fh->size); |
| 118 | } |
| 119 | return NULL; |
| 120 | } |
| 121 | |
| 122 | /* |
| 123 | * Encode/decode time. |
| 124 | */ |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 125 | static inline __be32 * |
| 126 | xdr_encode_time3(__be32 *p, struct timespec *timep) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 127 | { |
| 128 | *p++ = htonl(timep->tv_sec); |
| 129 | *p++ = htonl(timep->tv_nsec); |
| 130 | return p; |
| 131 | } |
| 132 | |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 133 | static inline __be32 * |
| 134 | xdr_decode_time3(__be32 *p, struct timespec *timep) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 135 | { |
| 136 | timep->tv_sec = ntohl(*p++); |
| 137 | timep->tv_nsec = ntohl(*p++); |
| 138 | return p; |
| 139 | } |
| 140 | |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 141 | static __be32 * |
| 142 | xdr_decode_fattr(__be32 *p, struct nfs_fattr *fattr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 143 | { |
| 144 | unsigned int type, major, minor; |
Trond Myklebust | bca7947 | 2009-03-11 14:10:26 -0400 | [diff] [blame] | 145 | umode_t fmode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 146 | |
| 147 | type = ntohl(*p++); |
Trond Myklebust | bca7947 | 2009-03-11 14:10:26 -0400 | [diff] [blame] | 148 | if (type > NF3FIFO) |
| 149 | type = NF3NON; |
| 150 | fmode = nfs_type2fmt[type]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | fattr->mode = (ntohl(*p++) & ~S_IFMT) | fmode; |
| 152 | fattr->nlink = ntohl(*p++); |
| 153 | fattr->uid = ntohl(*p++); |
| 154 | fattr->gid = ntohl(*p++); |
| 155 | p = xdr_decode_hyper(p, &fattr->size); |
| 156 | p = xdr_decode_hyper(p, &fattr->du.nfs3.used); |
| 157 | |
| 158 | /* Turn remote device info into Linux-specific dev_t */ |
| 159 | major = ntohl(*p++); |
| 160 | minor = ntohl(*p++); |
| 161 | fattr->rdev = MKDEV(major, minor); |
| 162 | if (MAJOR(fattr->rdev) != major || MINOR(fattr->rdev) != minor) |
| 163 | fattr->rdev = 0; |
| 164 | |
Trond Myklebust | 8b4bdcf | 2006-06-09 09:34:19 -0400 | [diff] [blame] | 165 | p = xdr_decode_hyper(p, &fattr->fsid.major); |
| 166 | fattr->fsid.minor = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | p = xdr_decode_hyper(p, &fattr->fileid); |
| 168 | p = xdr_decode_time3(p, &fattr->atime); |
| 169 | p = xdr_decode_time3(p, &fattr->mtime); |
| 170 | p = xdr_decode_time3(p, &fattr->ctime); |
| 171 | |
| 172 | /* Update the mode bits */ |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 173 | fattr->valid |= NFS_ATTR_FATTR_V3; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | return p; |
| 175 | } |
| 176 | |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 177 | static inline __be32 * |
| 178 | xdr_encode_sattr(__be32 *p, struct iattr *attr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | { |
| 180 | if (attr->ia_valid & ATTR_MODE) { |
| 181 | *p++ = xdr_one; |
Trond Myklebust | cf3fff5 | 2006-01-03 09:55:53 +0100 | [diff] [blame] | 182 | *p++ = htonl(attr->ia_mode & S_IALLUGO); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 183 | } else { |
| 184 | *p++ = xdr_zero; |
| 185 | } |
| 186 | if (attr->ia_valid & ATTR_UID) { |
| 187 | *p++ = xdr_one; |
| 188 | *p++ = htonl(attr->ia_uid); |
| 189 | } else { |
| 190 | *p++ = xdr_zero; |
| 191 | } |
| 192 | if (attr->ia_valid & ATTR_GID) { |
| 193 | *p++ = xdr_one; |
| 194 | *p++ = htonl(attr->ia_gid); |
| 195 | } else { |
| 196 | *p++ = xdr_zero; |
| 197 | } |
| 198 | if (attr->ia_valid & ATTR_SIZE) { |
| 199 | *p++ = xdr_one; |
| 200 | p = xdr_encode_hyper(p, (__u64) attr->ia_size); |
| 201 | } else { |
| 202 | *p++ = xdr_zero; |
| 203 | } |
| 204 | if (attr->ia_valid & ATTR_ATIME_SET) { |
| 205 | *p++ = xdr_two; |
| 206 | p = xdr_encode_time3(p, &attr->ia_atime); |
| 207 | } else if (attr->ia_valid & ATTR_ATIME) { |
| 208 | *p++ = xdr_one; |
| 209 | } else { |
| 210 | *p++ = xdr_zero; |
| 211 | } |
| 212 | if (attr->ia_valid & ATTR_MTIME_SET) { |
| 213 | *p++ = xdr_two; |
| 214 | p = xdr_encode_time3(p, &attr->ia_mtime); |
| 215 | } else if (attr->ia_valid & ATTR_MTIME) { |
| 216 | *p++ = xdr_one; |
| 217 | } else { |
| 218 | *p++ = xdr_zero; |
| 219 | } |
| 220 | return p; |
| 221 | } |
| 222 | |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 223 | static inline __be32 * |
| 224 | xdr_decode_wcc_attr(__be32 *p, struct nfs_fattr *fattr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 225 | { |
| 226 | p = xdr_decode_hyper(p, &fattr->pre_size); |
| 227 | p = xdr_decode_time3(p, &fattr->pre_mtime); |
| 228 | p = xdr_decode_time3(p, &fattr->pre_ctime); |
Trond Myklebust | 9e6e70f | 2009-03-11 14:10:24 -0400 | [diff] [blame] | 229 | fattr->valid |= NFS_ATTR_FATTR_PRESIZE |
| 230 | | NFS_ATTR_FATTR_PREMTIME |
| 231 | | NFS_ATTR_FATTR_PRECTIME; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 232 | return p; |
| 233 | } |
| 234 | |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 235 | static inline __be32 * |
| 236 | xdr_decode_post_op_attr(__be32 *p, struct nfs_fattr *fattr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 237 | { |
| 238 | if (*p++) |
| 239 | p = xdr_decode_fattr(p, fattr); |
| 240 | return p; |
| 241 | } |
| 242 | |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 243 | static inline __be32 * |
| 244 | xdr_decode_pre_op_attr(__be32 *p, struct nfs_fattr *fattr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 245 | { |
| 246 | if (*p++) |
| 247 | return xdr_decode_wcc_attr(p, fattr); |
| 248 | return p; |
| 249 | } |
| 250 | |
| 251 | |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 252 | static inline __be32 * |
| 253 | xdr_decode_wcc_data(__be32 *p, struct nfs_fattr *fattr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | { |
| 255 | p = xdr_decode_pre_op_attr(p, fattr); |
| 256 | return xdr_decode_post_op_attr(p, fattr); |
| 257 | } |
| 258 | |
| 259 | /* |
| 260 | * NFS encode functions |
| 261 | */ |
| 262 | |
| 263 | /* |
| 264 | * Encode file handle argument |
| 265 | */ |
| 266 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 267 | 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] | 268 | { |
| 269 | p = xdr_encode_fhandle(p, fh); |
| 270 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
| 271 | return 0; |
| 272 | } |
| 273 | |
| 274 | /* |
| 275 | * Encode SETATTR arguments |
| 276 | */ |
| 277 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 278 | 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] | 279 | { |
| 280 | p = xdr_encode_fhandle(p, args->fh); |
| 281 | p = xdr_encode_sattr(p, args->sattr); |
| 282 | *p++ = htonl(args->guard); |
| 283 | if (args->guard) |
| 284 | p = xdr_encode_time3(p, &args->guardtime); |
| 285 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
| 286 | return 0; |
| 287 | } |
| 288 | |
| 289 | /* |
| 290 | * Encode directory ops argument |
| 291 | */ |
| 292 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 293 | 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] | 294 | { |
| 295 | p = xdr_encode_fhandle(p, args->fh); |
| 296 | p = xdr_encode_array(p, args->name, args->len); |
| 297 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
| 298 | return 0; |
| 299 | } |
| 300 | |
| 301 | /* |
Trond Myklebust | 4fdc17b | 2007-07-14 15:39:57 -0400 | [diff] [blame] | 302 | * Encode REMOVE argument |
| 303 | */ |
| 304 | static int |
| 305 | nfs3_xdr_removeargs(struct rpc_rqst *req, __be32 *p, const struct nfs_removeargs *args) |
| 306 | { |
| 307 | p = xdr_encode_fhandle(p, args->fh); |
| 308 | p = xdr_encode_array(p, args->name.name, args->name.len); |
| 309 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
| 310 | return 0; |
| 311 | } |
| 312 | |
| 313 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | * Encode access() argument |
| 315 | */ |
| 316 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 317 | 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] | 318 | { |
| 319 | p = xdr_encode_fhandle(p, args->fh); |
| 320 | *p++ = htonl(args->access); |
| 321 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
| 322 | return 0; |
| 323 | } |
| 324 | |
| 325 | /* |
| 326 | * Arguments to a READ call. Since we read data directly into the page |
| 327 | * cache, we also set up the reply iovec here so that iov[1] points |
| 328 | * exactly to the page we want to fetch. |
| 329 | */ |
| 330 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 331 | 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] | 332 | { |
Trond Myklebust | a17c215 | 2010-07-31 14:29:08 -0400 | [diff] [blame] | 333 | struct rpc_auth *auth = req->rq_cred->cr_auth; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | unsigned int replen; |
| 335 | u32 count = args->count; |
| 336 | |
| 337 | p = xdr_encode_fhandle(p, args->fh); |
| 338 | p = xdr_encode_hyper(p, args->offset); |
| 339 | *p++ = htonl(count); |
| 340 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
| 341 | |
| 342 | /* Inline the page array */ |
| 343 | replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readres_sz) << 2; |
| 344 | xdr_inline_pages(&req->rq_rcv_buf, replen, |
| 345 | args->pages, args->pgbase, count); |
\"Talpey, Thomas\ | 4f22ccc | 2007-09-10 13:44:58 -0400 | [diff] [blame] | 346 | req->rq_rcv_buf.flags |= XDRBUF_READ; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 347 | return 0; |
| 348 | } |
| 349 | |
| 350 | /* |
| 351 | * Write arguments. Splice the buffer to be written into the iovec. |
| 352 | */ |
| 353 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 354 | 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] | 355 | { |
| 356 | struct xdr_buf *sndbuf = &req->rq_snd_buf; |
| 357 | u32 count = args->count; |
| 358 | |
| 359 | p = xdr_encode_fhandle(p, args->fh); |
| 360 | p = xdr_encode_hyper(p, args->offset); |
| 361 | *p++ = htonl(count); |
| 362 | *p++ = htonl(args->stable); |
| 363 | *p++ = htonl(count); |
| 364 | sndbuf->len = xdr_adjust_iovec(sndbuf->head, p); |
| 365 | |
| 366 | /* Copy the page array */ |
| 367 | xdr_encode_pages(sndbuf, args->pages, args->pgbase, count); |
\"Talpey, Thomas\ | 4f22ccc | 2007-09-10 13:44:58 -0400 | [diff] [blame] | 368 | sndbuf->flags |= XDRBUF_WRITE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 369 | return 0; |
| 370 | } |
| 371 | |
| 372 | /* |
| 373 | * Encode CREATE arguments |
| 374 | */ |
| 375 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 376 | 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] | 377 | { |
| 378 | p = xdr_encode_fhandle(p, args->fh); |
| 379 | p = xdr_encode_array(p, args->name, args->len); |
| 380 | |
| 381 | *p++ = htonl(args->createmode); |
| 382 | if (args->createmode == NFS3_CREATE_EXCLUSIVE) { |
| 383 | *p++ = args->verifier[0]; |
| 384 | *p++ = args->verifier[1]; |
| 385 | } else |
| 386 | p = xdr_encode_sattr(p, args->sattr); |
| 387 | |
| 388 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
| 389 | return 0; |
| 390 | } |
| 391 | |
| 392 | /* |
| 393 | * Encode MKDIR arguments |
| 394 | */ |
| 395 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 396 | 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] | 397 | { |
| 398 | p = xdr_encode_fhandle(p, args->fh); |
| 399 | p = xdr_encode_array(p, args->name, args->len); |
| 400 | p = xdr_encode_sattr(p, args->sattr); |
| 401 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
| 402 | return 0; |
| 403 | } |
| 404 | |
| 405 | /* |
| 406 | * Encode SYMLINK arguments |
| 407 | */ |
| 408 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 409 | 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] | 410 | { |
| 411 | p = xdr_encode_fhandle(p, args->fromfh); |
| 412 | p = xdr_encode_array(p, args->fromname, args->fromlen); |
| 413 | p = xdr_encode_sattr(p, args->sattr); |
Chuck Lever | 94a6d75 | 2006-08-22 20:06:23 -0400 | [diff] [blame] | 414 | *p++ = htonl(args->pathlen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 415 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
Chuck Lever | 94a6d75 | 2006-08-22 20:06:23 -0400 | [diff] [blame] | 416 | |
| 417 | /* Copy the page */ |
| 418 | xdr_encode_pages(&req->rq_snd_buf, args->pages, 0, args->pathlen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 419 | return 0; |
| 420 | } |
| 421 | |
| 422 | /* |
| 423 | * Encode MKNOD arguments |
| 424 | */ |
| 425 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 426 | 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] | 427 | { |
| 428 | p = xdr_encode_fhandle(p, args->fh); |
| 429 | p = xdr_encode_array(p, args->name, args->len); |
| 430 | *p++ = htonl(args->type); |
| 431 | p = xdr_encode_sattr(p, args->sattr); |
| 432 | if (args->type == NF3CHR || args->type == NF3BLK) { |
| 433 | *p++ = htonl(MAJOR(args->rdev)); |
| 434 | *p++ = htonl(MINOR(args->rdev)); |
| 435 | } |
| 436 | |
| 437 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
| 438 | return 0; |
| 439 | } |
| 440 | |
| 441 | /* |
| 442 | * Encode RENAME arguments |
| 443 | */ |
| 444 | static int |
Jeff Layton | 920769f | 2010-09-17 17:30:25 -0400 | [diff] [blame^] | 445 | nfs3_xdr_renameargs(struct rpc_rqst *req, __be32 *p, struct nfs_renameargs *args) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 446 | { |
Jeff Layton | 920769f | 2010-09-17 17:30:25 -0400 | [diff] [blame^] | 447 | p = xdr_encode_fhandle(p, args->old_dir); |
| 448 | p = xdr_encode_array(p, args->old_name->name, args->old_name->len); |
| 449 | p = xdr_encode_fhandle(p, args->new_dir); |
| 450 | p = xdr_encode_array(p, args->new_name->name, args->new_name->len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 451 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
| 452 | return 0; |
| 453 | } |
| 454 | |
| 455 | /* |
| 456 | * Encode LINK arguments |
| 457 | */ |
| 458 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 459 | 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] | 460 | { |
| 461 | p = xdr_encode_fhandle(p, args->fromfh); |
| 462 | p = xdr_encode_fhandle(p, args->tofh); |
| 463 | p = xdr_encode_array(p, args->toname, args->tolen); |
| 464 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
| 465 | return 0; |
| 466 | } |
| 467 | |
| 468 | /* |
| 469 | * Encode arguments to readdir call |
| 470 | */ |
| 471 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 472 | 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] | 473 | { |
Trond Myklebust | a17c215 | 2010-07-31 14:29:08 -0400 | [diff] [blame] | 474 | struct rpc_auth *auth = req->rq_cred->cr_auth; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 475 | unsigned int replen; |
| 476 | u32 count = args->count; |
| 477 | |
| 478 | p = xdr_encode_fhandle(p, args->fh); |
| 479 | p = xdr_encode_hyper(p, args->cookie); |
| 480 | *p++ = args->verf[0]; |
| 481 | *p++ = args->verf[1]; |
| 482 | if (args->plus) { |
| 483 | /* readdirplus: need dircount + buffer size. |
| 484 | * We just make sure we make dircount big enough */ |
| 485 | *p++ = htonl(count >> 3); |
| 486 | } |
| 487 | *p++ = htonl(count); |
| 488 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
| 489 | |
| 490 | /* Inline the page array */ |
| 491 | replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readdirres_sz) << 2; |
| 492 | xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, 0, count); |
| 493 | return 0; |
| 494 | } |
| 495 | |
| 496 | /* |
| 497 | * Decode the result of a readdir call. |
| 498 | * We just check for syntactical correctness. |
| 499 | */ |
| 500 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 501 | 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] | 502 | { |
| 503 | struct xdr_buf *rcvbuf = &req->rq_rcv_buf; |
| 504 | struct kvec *iov = rcvbuf->head; |
| 505 | struct page **page; |
Chuck Lever | c957c52 | 2007-10-26 13:31:57 -0400 | [diff] [blame] | 506 | size_t hdrlen; |
| 507 | u32 len, recvd, pglen; |
Jeff Layton | 643f811 | 2008-02-22 14:50:00 -0500 | [diff] [blame] | 508 | int status, nr = 0; |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 509 | __be32 *entry, *end, *kaddr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 510 | |
| 511 | status = ntohl(*p++); |
| 512 | /* Decode post_op_attrs */ |
| 513 | p = xdr_decode_post_op_attr(p, res->dir_attr); |
| 514 | if (status) |
Benny Halevy | 856dff3 | 2008-03-31 17:39:06 +0300 | [diff] [blame] | 515 | return nfs_stat_to_errno(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 516 | /* Decode verifier cookie */ |
| 517 | if (res->verf) { |
| 518 | res->verf[0] = *p++; |
| 519 | res->verf[1] = *p++; |
| 520 | } else { |
| 521 | p += 2; |
| 522 | } |
| 523 | |
| 524 | hdrlen = (u8 *) p - (u8 *) iov->iov_base; |
| 525 | if (iov->iov_len < hdrlen) { |
Chuck Lever | fe82a18 | 2007-09-11 18:01:10 -0400 | [diff] [blame] | 526 | dprintk("NFS: READDIR reply header overflowed:" |
Chuck Lever | c957c52 | 2007-10-26 13:31:57 -0400 | [diff] [blame] | 527 | "length %Zu > %Zu\n", hdrlen, iov->iov_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 528 | return -errno_NFSERR_IO; |
| 529 | } else if (iov->iov_len != hdrlen) { |
| 530 | dprintk("NFS: READDIR header is short. iovec will be shifted.\n"); |
| 531 | xdr_shift_buf(rcvbuf, iov->iov_len - hdrlen); |
| 532 | } |
| 533 | |
| 534 | pglen = rcvbuf->page_len; |
| 535 | recvd = rcvbuf->len - hdrlen; |
| 536 | if (pglen > recvd) |
| 537 | pglen = recvd; |
| 538 | page = rcvbuf->pages; |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 539 | kaddr = p = kmap_atomic(*page, KM_USER0); |
| 540 | end = (__be32 *)((char *)p + pglen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 541 | entry = p; |
Jeff Layton | 643f811 | 2008-02-22 14:50:00 -0500 | [diff] [blame] | 542 | |
| 543 | /* Make sure the packet actually has a value_follows and EOF entry */ |
| 544 | if ((entry + 1) > end) |
| 545 | goto short_pkt; |
| 546 | |
| 547 | for (; *p++; nr++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 548 | if (p + 3 > end) |
| 549 | goto short_pkt; |
| 550 | p += 2; /* inode # */ |
| 551 | len = ntohl(*p++); /* string length */ |
| 552 | p += XDR_QUADLEN(len) + 2; /* name + cookie */ |
| 553 | if (len > NFS3_MAXNAMLEN) { |
Chuck Lever | c957c52 | 2007-10-26 13:31:57 -0400 | [diff] [blame] | 554 | dprintk("NFS: giant filename in readdir (len 0x%x)!\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 555 | len); |
| 556 | goto err_unmap; |
| 557 | } |
| 558 | |
| 559 | if (res->plus) { |
| 560 | /* post_op_attr */ |
| 561 | if (p + 2 > end) |
| 562 | goto short_pkt; |
| 563 | if (*p++) { |
| 564 | p += 21; |
| 565 | if (p + 1 > end) |
| 566 | goto short_pkt; |
| 567 | } |
| 568 | /* post_op_fh3 */ |
| 569 | if (*p++) { |
| 570 | if (p + 1 > end) |
| 571 | goto short_pkt; |
| 572 | len = ntohl(*p++); |
| 573 | if (len > NFS3_FHSIZE) { |
Chuck Lever | fe82a18 | 2007-09-11 18:01:10 -0400 | [diff] [blame] | 574 | dprintk("NFS: giant filehandle in " |
Chuck Lever | c957c52 | 2007-10-26 13:31:57 -0400 | [diff] [blame] | 575 | "readdir (len 0x%x)!\n", len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 576 | goto err_unmap; |
| 577 | } |
| 578 | p += XDR_QUADLEN(len); |
| 579 | } |
| 580 | } |
| 581 | |
| 582 | if (p + 2 > end) |
| 583 | goto short_pkt; |
| 584 | entry = p; |
| 585 | } |
Jeff Layton | 643f811 | 2008-02-22 14:50:00 -0500 | [diff] [blame] | 586 | |
| 587 | /* |
| 588 | * Apparently some server sends responses that are a valid size, but |
| 589 | * contain no entries, and have value_follows==0 and EOF==0. For |
| 590 | * those, just set the EOF marker. |
| 591 | */ |
| 592 | if (!nr && entry[1] == 0) { |
| 593 | dprintk("NFS: readdir reply truncated!\n"); |
| 594 | entry[1] = 1; |
| 595 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 596 | out: |
| 597 | kunmap_atomic(kaddr, KM_USER0); |
| 598 | return nr; |
| 599 | short_pkt: |
Jeff Layton | 643f811 | 2008-02-22 14:50:00 -0500 | [diff] [blame] | 600 | /* |
| 601 | * When we get a short packet there are 2 possibilities. We can |
| 602 | * return an error, or fix up the response to look like a valid |
| 603 | * response and return what we have so far. If there are no |
| 604 | * entries and the packet was short, then return -EIO. If there |
| 605 | * are valid entries in the response, return them and pretend that |
| 606 | * the call was successful, but incomplete. The caller can retry the |
| 607 | * readdir starting at the last cookie. |
| 608 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 609 | entry[0] = entry[1] = 0; |
Jeff Layton | 643f811 | 2008-02-22 14:50:00 -0500 | [diff] [blame] | 610 | if (!nr) |
| 611 | nr = -errno_NFSERR_IO; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 612 | goto out; |
| 613 | err_unmap: |
| 614 | nr = -errno_NFSERR_IO; |
| 615 | goto out; |
| 616 | } |
| 617 | |
Al Viro | 0dbb4c6 | 2006-10-19 23:28:49 -0700 | [diff] [blame] | 618 | __be32 * |
| 619 | nfs3_decode_dirent(__be32 *p, struct nfs_entry *entry, int plus) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 620 | { |
| 621 | struct nfs_entry old = *entry; |
| 622 | |
| 623 | if (!*p++) { |
| 624 | if (!*p) |
| 625 | return ERR_PTR(-EAGAIN); |
| 626 | entry->eof = 1; |
| 627 | return ERR_PTR(-EBADCOOKIE); |
| 628 | } |
| 629 | |
| 630 | p = xdr_decode_hyper(p, &entry->ino); |
| 631 | entry->len = ntohl(*p++); |
| 632 | entry->name = (const char *) p; |
| 633 | p += XDR_QUADLEN(entry->len); |
| 634 | entry->prev_cookie = entry->cookie; |
| 635 | p = xdr_decode_hyper(p, &entry->cookie); |
| 636 | |
| 637 | if (plus) { |
| 638 | entry->fattr->valid = 0; |
| 639 | p = xdr_decode_post_op_attr(p, entry->fattr); |
| 640 | /* In fact, a post_op_fh3: */ |
| 641 | if (*p++) { |
| 642 | p = xdr_decode_fhandle(p, entry->fh); |
| 643 | /* Ugh -- server reply was truncated */ |
| 644 | if (p == NULL) { |
| 645 | dprintk("NFS: FH truncated\n"); |
| 646 | *entry = old; |
| 647 | return ERR_PTR(-EAGAIN); |
| 648 | } |
| 649 | } else |
| 650 | memset((u8*)(entry->fh), 0, sizeof(*entry->fh)); |
| 651 | } |
| 652 | |
| 653 | entry->eof = !p[0] && p[1]; |
| 654 | return p; |
| 655 | } |
| 656 | |
| 657 | /* |
| 658 | * Encode COMMIT arguments |
| 659 | */ |
| 660 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 661 | 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] | 662 | { |
| 663 | p = xdr_encode_fhandle(p, args->fh); |
| 664 | p = xdr_encode_hyper(p, args->offset); |
| 665 | *p++ = htonl(args->count); |
| 666 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
| 667 | return 0; |
| 668 | } |
| 669 | |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 670 | #ifdef CONFIG_NFS_V3_ACL |
| 671 | /* |
| 672 | * Encode GETACL arguments |
| 673 | */ |
| 674 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 675 | nfs3_xdr_getaclargs(struct rpc_rqst *req, __be32 *p, |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 676 | struct nfs3_getaclargs *args) |
| 677 | { |
Trond Myklebust | a17c215 | 2010-07-31 14:29:08 -0400 | [diff] [blame] | 678 | struct rpc_auth *auth = req->rq_cred->cr_auth; |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 679 | unsigned int replen; |
| 680 | |
| 681 | p = xdr_encode_fhandle(p, args->fh); |
| 682 | *p++ = htonl(args->mask); |
| 683 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
| 684 | |
| 685 | if (args->mask & (NFS_ACL | NFS_DFACL)) { |
| 686 | /* Inline the page array */ |
| 687 | replen = (RPC_REPHDRSIZE + auth->au_rslack + |
| 688 | ACL3_getaclres_sz) << 2; |
| 689 | xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, 0, |
| 690 | NFSACL_MAXPAGES << PAGE_SHIFT); |
| 691 | } |
| 692 | return 0; |
| 693 | } |
| 694 | |
| 695 | /* |
| 696 | * Encode SETACL arguments |
| 697 | */ |
| 698 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 699 | nfs3_xdr_setaclargs(struct rpc_rqst *req, __be32 *p, |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 700 | struct nfs3_setaclargs *args) |
| 701 | { |
| 702 | struct xdr_buf *buf = &req->rq_snd_buf; |
Trond Myklebust | ae46141 | 2009-03-10 20:33:18 -0400 | [diff] [blame] | 703 | unsigned int base; |
| 704 | int err; |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 705 | |
| 706 | p = xdr_encode_fhandle(p, NFS_FH(args->inode)); |
| 707 | *p++ = htonl(args->mask); |
Trond Myklebust | ae46141 | 2009-03-10 20:33:18 -0400 | [diff] [blame] | 708 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
| 709 | base = req->rq_slen; |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 710 | |
Trond Myklebust | ae46141 | 2009-03-10 20:33:18 -0400 | [diff] [blame] | 711 | if (args->npages != 0) |
| 712 | xdr_encode_pages(buf, args->pages, 0, args->len); |
| 713 | else |
Trond Myklebust | 8340437 | 2009-04-20 14:58:35 -0400 | [diff] [blame] | 714 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, |
| 715 | p + XDR_QUADLEN(args->len)); |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 716 | |
| 717 | err = nfsacl_encode(buf, base, args->inode, |
| 718 | (args->mask & NFS_ACL) ? |
| 719 | args->acl_access : NULL, 1, 0); |
| 720 | if (err > 0) |
| 721 | err = nfsacl_encode(buf, base + err, args->inode, |
| 722 | (args->mask & NFS_DFACL) ? |
| 723 | args->acl_default : NULL, 1, |
| 724 | NFS_ACL_DEFAULT); |
| 725 | return (err > 0) ? 0 : err; |
| 726 | } |
| 727 | #endif /* CONFIG_NFS_V3_ACL */ |
| 728 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 729 | /* |
| 730 | * NFS XDR decode functions |
| 731 | */ |
| 732 | |
| 733 | /* |
| 734 | * Decode attrstat reply. |
| 735 | */ |
| 736 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 737 | 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] | 738 | { |
| 739 | int status; |
| 740 | |
| 741 | if ((status = ntohl(*p++))) |
Benny Halevy | 856dff3 | 2008-03-31 17:39:06 +0300 | [diff] [blame] | 742 | return nfs_stat_to_errno(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 743 | xdr_decode_fattr(p, fattr); |
| 744 | return 0; |
| 745 | } |
| 746 | |
| 747 | /* |
| 748 | * Decode status+wcc_data reply |
| 749 | * SATTR, REMOVE, RMDIR |
| 750 | */ |
| 751 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 752 | 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] | 753 | { |
| 754 | int status; |
| 755 | |
| 756 | if ((status = ntohl(*p++))) |
Benny Halevy | 856dff3 | 2008-03-31 17:39:06 +0300 | [diff] [blame] | 757 | status = nfs_stat_to_errno(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 758 | xdr_decode_wcc_data(p, fattr); |
| 759 | return status; |
| 760 | } |
| 761 | |
Trond Myklebust | 4fdc17b | 2007-07-14 15:39:57 -0400 | [diff] [blame] | 762 | static int |
| 763 | nfs3_xdr_removeres(struct rpc_rqst *req, __be32 *p, struct nfs_removeres *res) |
| 764 | { |
Trond Myklebust | d346890 | 2010-04-16 16:22:50 -0400 | [diff] [blame] | 765 | return nfs3_xdr_wccstat(req, p, res->dir_attr); |
Trond Myklebust | 4fdc17b | 2007-07-14 15:39:57 -0400 | [diff] [blame] | 766 | } |
| 767 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 768 | /* |
| 769 | * Decode LOOKUP reply |
| 770 | */ |
| 771 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 772 | 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] | 773 | { |
| 774 | int status; |
| 775 | |
| 776 | if ((status = ntohl(*p++))) { |
Benny Halevy | 856dff3 | 2008-03-31 17:39:06 +0300 | [diff] [blame] | 777 | status = nfs_stat_to_errno(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 778 | } else { |
| 779 | if (!(p = xdr_decode_fhandle(p, res->fh))) |
| 780 | return -errno_NFSERR_IO; |
| 781 | p = xdr_decode_post_op_attr(p, res->fattr); |
| 782 | } |
| 783 | xdr_decode_post_op_attr(p, res->dir_attr); |
| 784 | return status; |
| 785 | } |
| 786 | |
| 787 | /* |
| 788 | * Decode ACCESS reply |
| 789 | */ |
| 790 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 791 | 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] | 792 | { |
| 793 | int status = ntohl(*p++); |
| 794 | |
| 795 | p = xdr_decode_post_op_attr(p, res->fattr); |
| 796 | if (status) |
Benny Halevy | 856dff3 | 2008-03-31 17:39:06 +0300 | [diff] [blame] | 797 | return nfs_stat_to_errno(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 798 | res->access = ntohl(*p++); |
| 799 | return 0; |
| 800 | } |
| 801 | |
| 802 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 803 | 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] | 804 | { |
Trond Myklebust | a17c215 | 2010-07-31 14:29:08 -0400 | [diff] [blame] | 805 | struct rpc_auth *auth = req->rq_cred->cr_auth; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 806 | unsigned int replen; |
| 807 | |
| 808 | p = xdr_encode_fhandle(p, args->fh); |
| 809 | req->rq_slen = xdr_adjust_iovec(req->rq_svec, p); |
| 810 | |
| 811 | /* Inline the page array */ |
| 812 | replen = (RPC_REPHDRSIZE + auth->au_rslack + NFS3_readlinkres_sz) << 2; |
| 813 | xdr_inline_pages(&req->rq_rcv_buf, replen, args->pages, args->pgbase, args->pglen); |
| 814 | return 0; |
| 815 | } |
| 816 | |
| 817 | /* |
| 818 | * Decode READLINK reply |
| 819 | */ |
| 820 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 821 | 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] | 822 | { |
| 823 | struct xdr_buf *rcvbuf = &req->rq_rcv_buf; |
| 824 | struct kvec *iov = rcvbuf->head; |
Chuck Lever | c957c52 | 2007-10-26 13:31:57 -0400 | [diff] [blame] | 825 | size_t hdrlen; |
| 826 | u32 len, recvd; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 827 | char *kaddr; |
| 828 | int status; |
| 829 | |
| 830 | status = ntohl(*p++); |
| 831 | p = xdr_decode_post_op_attr(p, fattr); |
| 832 | |
| 833 | if (status != 0) |
Benny Halevy | 856dff3 | 2008-03-31 17:39:06 +0300 | [diff] [blame] | 834 | return nfs_stat_to_errno(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 835 | |
| 836 | /* Convert length of symlink */ |
| 837 | len = ntohl(*p++); |
Chuck Lever | c957c52 | 2007-10-26 13:31:57 -0400 | [diff] [blame] | 838 | if (len >= rcvbuf->page_len) { |
Chuck Lever | fe82a18 | 2007-09-11 18:01:10 -0400 | [diff] [blame] | 839 | dprintk("nfs: server returned giant symlink!\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 840 | return -ENAMETOOLONG; |
| 841 | } |
| 842 | |
| 843 | hdrlen = (u8 *) p - (u8 *) iov->iov_base; |
| 844 | if (iov->iov_len < hdrlen) { |
Chuck Lever | fe82a18 | 2007-09-11 18:01:10 -0400 | [diff] [blame] | 845 | dprintk("NFS: READLINK reply header overflowed:" |
Chuck Lever | c957c52 | 2007-10-26 13:31:57 -0400 | [diff] [blame] | 846 | "length %Zu > %Zu\n", hdrlen, iov->iov_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 847 | return -errno_NFSERR_IO; |
| 848 | } else if (iov->iov_len != hdrlen) { |
Chuck Lever | fe82a18 | 2007-09-11 18:01:10 -0400 | [diff] [blame] | 849 | dprintk("NFS: READLINK header is short. " |
| 850 | "iovec will be shifted.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 851 | xdr_shift_buf(rcvbuf, iov->iov_len - hdrlen); |
| 852 | } |
| 853 | recvd = req->rq_rcv_buf.len - hdrlen; |
| 854 | if (recvd < len) { |
Chuck Lever | fe82a18 | 2007-09-11 18:01:10 -0400 | [diff] [blame] | 855 | dprintk("NFS: server cheating in readlink reply: " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 856 | "count %u > recvd %u\n", len, recvd); |
| 857 | return -EIO; |
| 858 | } |
| 859 | |
| 860 | /* NULL terminate the string we got */ |
| 861 | kaddr = (char*)kmap_atomic(rcvbuf->pages[0], KM_USER0); |
| 862 | kaddr[len+rcvbuf->page_base] = '\0'; |
| 863 | kunmap_atomic(kaddr, KM_USER0); |
| 864 | return 0; |
| 865 | } |
| 866 | |
| 867 | /* |
| 868 | * Decode READ reply |
| 869 | */ |
| 870 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 871 | 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] | 872 | { |
| 873 | struct kvec *iov = req->rq_rcv_buf.head; |
Chuck Lever | c957c52 | 2007-10-26 13:31:57 -0400 | [diff] [blame] | 874 | size_t hdrlen; |
| 875 | u32 count, ocount, recvd; |
| 876 | int status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 877 | |
| 878 | status = ntohl(*p++); |
| 879 | p = xdr_decode_post_op_attr(p, res->fattr); |
| 880 | |
| 881 | if (status != 0) |
Benny Halevy | 856dff3 | 2008-03-31 17:39:06 +0300 | [diff] [blame] | 882 | return nfs_stat_to_errno(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 883 | |
Chuck Lever | c957c52 | 2007-10-26 13:31:57 -0400 | [diff] [blame] | 884 | /* Decode reply count and EOF flag. NFSv3 is somewhat redundant |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 885 | * in that it puts the count both in the res struct and in the |
| 886 | * opaque data count. */ |
| 887 | count = ntohl(*p++); |
| 888 | res->eof = ntohl(*p++); |
| 889 | ocount = ntohl(*p++); |
| 890 | |
| 891 | if (ocount != count) { |
Chuck Lever | fe82a18 | 2007-09-11 18:01:10 -0400 | [diff] [blame] | 892 | dprintk("NFS: READ count doesn't match RPC opaque count.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 893 | return -errno_NFSERR_IO; |
| 894 | } |
| 895 | |
| 896 | hdrlen = (u8 *) p - (u8 *) iov->iov_base; |
| 897 | if (iov->iov_len < hdrlen) { |
Chuck Lever | fe82a18 | 2007-09-11 18:01:10 -0400 | [diff] [blame] | 898 | dprintk("NFS: READ reply header overflowed:" |
Chuck Lever | c957c52 | 2007-10-26 13:31:57 -0400 | [diff] [blame] | 899 | "length %Zu > %Zu\n", hdrlen, iov->iov_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 900 | return -errno_NFSERR_IO; |
| 901 | } else if (iov->iov_len != hdrlen) { |
| 902 | dprintk("NFS: READ header is short. iovec will be shifted.\n"); |
| 903 | xdr_shift_buf(&req->rq_rcv_buf, iov->iov_len - hdrlen); |
| 904 | } |
| 905 | |
| 906 | recvd = req->rq_rcv_buf.len - hdrlen; |
| 907 | if (count > recvd) { |
Chuck Lever | fe82a18 | 2007-09-11 18:01:10 -0400 | [diff] [blame] | 908 | dprintk("NFS: server cheating in read reply: " |
Chuck Lever | c957c52 | 2007-10-26 13:31:57 -0400 | [diff] [blame] | 909 | "count %u > recvd %u\n", count, recvd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 910 | count = recvd; |
| 911 | res->eof = 0; |
| 912 | } |
| 913 | |
| 914 | if (count < res->count) |
| 915 | res->count = count; |
| 916 | |
| 917 | return count; |
| 918 | } |
| 919 | |
| 920 | /* |
| 921 | * Decode WRITE response |
| 922 | */ |
| 923 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 924 | 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] | 925 | { |
| 926 | int status; |
| 927 | |
| 928 | status = ntohl(*p++); |
| 929 | p = xdr_decode_wcc_data(p, res->fattr); |
| 930 | |
| 931 | if (status != 0) |
Benny Halevy | 856dff3 | 2008-03-31 17:39:06 +0300 | [diff] [blame] | 932 | return nfs_stat_to_errno(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 933 | |
| 934 | res->count = ntohl(*p++); |
| 935 | res->verf->committed = (enum nfs3_stable_how)ntohl(*p++); |
| 936 | res->verf->verifier[0] = *p++; |
| 937 | res->verf->verifier[1] = *p++; |
| 938 | |
| 939 | return res->count; |
| 940 | } |
| 941 | |
| 942 | /* |
| 943 | * Decode a CREATE response |
| 944 | */ |
| 945 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 946 | 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] | 947 | { |
| 948 | int status; |
| 949 | |
| 950 | status = ntohl(*p++); |
| 951 | if (status == 0) { |
| 952 | if (*p++) { |
| 953 | if (!(p = xdr_decode_fhandle(p, res->fh))) |
| 954 | return -errno_NFSERR_IO; |
| 955 | p = xdr_decode_post_op_attr(p, res->fattr); |
| 956 | } else { |
| 957 | memset(res->fh, 0, sizeof(*res->fh)); |
| 958 | /* Do decode post_op_attr but set it to NULL */ |
| 959 | p = xdr_decode_post_op_attr(p, res->fattr); |
| 960 | res->fattr->valid = 0; |
| 961 | } |
| 962 | } else { |
Benny Halevy | 856dff3 | 2008-03-31 17:39:06 +0300 | [diff] [blame] | 963 | status = nfs_stat_to_errno(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 964 | } |
| 965 | p = xdr_decode_wcc_data(p, res->dir_attr); |
| 966 | return status; |
| 967 | } |
| 968 | |
| 969 | /* |
| 970 | * Decode RENAME reply |
| 971 | */ |
| 972 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 973 | 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] | 974 | { |
| 975 | int status; |
| 976 | |
| 977 | if ((status = ntohl(*p++)) != 0) |
Benny Halevy | 856dff3 | 2008-03-31 17:39:06 +0300 | [diff] [blame] | 978 | status = nfs_stat_to_errno(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 979 | p = xdr_decode_wcc_data(p, res->fromattr); |
| 980 | p = xdr_decode_wcc_data(p, res->toattr); |
| 981 | return status; |
| 982 | } |
| 983 | |
| 984 | /* |
| 985 | * Decode LINK reply |
| 986 | */ |
| 987 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 988 | 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] | 989 | { |
| 990 | int status; |
| 991 | |
| 992 | if ((status = ntohl(*p++)) != 0) |
Benny Halevy | 856dff3 | 2008-03-31 17:39:06 +0300 | [diff] [blame] | 993 | status = nfs_stat_to_errno(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 994 | p = xdr_decode_post_op_attr(p, res->fattr); |
| 995 | p = xdr_decode_wcc_data(p, res->dir_attr); |
| 996 | return status; |
| 997 | } |
| 998 | |
| 999 | /* |
| 1000 | * Decode FSSTAT reply |
| 1001 | */ |
| 1002 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 1003 | 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] | 1004 | { |
| 1005 | int status; |
| 1006 | |
| 1007 | status = ntohl(*p++); |
| 1008 | |
| 1009 | p = xdr_decode_post_op_attr(p, res->fattr); |
| 1010 | if (status != 0) |
Benny Halevy | 856dff3 | 2008-03-31 17:39:06 +0300 | [diff] [blame] | 1011 | return nfs_stat_to_errno(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1012 | |
| 1013 | p = xdr_decode_hyper(p, &res->tbytes); |
| 1014 | p = xdr_decode_hyper(p, &res->fbytes); |
| 1015 | p = xdr_decode_hyper(p, &res->abytes); |
| 1016 | p = xdr_decode_hyper(p, &res->tfiles); |
| 1017 | p = xdr_decode_hyper(p, &res->ffiles); |
| 1018 | p = xdr_decode_hyper(p, &res->afiles); |
| 1019 | |
| 1020 | /* ignore invarsec */ |
| 1021 | return 0; |
| 1022 | } |
| 1023 | |
| 1024 | /* |
| 1025 | * Decode FSINFO reply |
| 1026 | */ |
| 1027 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 1028 | 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] | 1029 | { |
| 1030 | int status; |
| 1031 | |
| 1032 | status = ntohl(*p++); |
| 1033 | |
| 1034 | p = xdr_decode_post_op_attr(p, res->fattr); |
| 1035 | if (status != 0) |
Benny Halevy | 856dff3 | 2008-03-31 17:39:06 +0300 | [diff] [blame] | 1036 | return nfs_stat_to_errno(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1037 | |
| 1038 | res->rtmax = ntohl(*p++); |
| 1039 | res->rtpref = ntohl(*p++); |
| 1040 | res->rtmult = ntohl(*p++); |
| 1041 | res->wtmax = ntohl(*p++); |
| 1042 | res->wtpref = ntohl(*p++); |
| 1043 | res->wtmult = ntohl(*p++); |
| 1044 | res->dtpref = ntohl(*p++); |
| 1045 | p = xdr_decode_hyper(p, &res->maxfilesize); |
| 1046 | |
| 1047 | /* ignore time_delta and properties */ |
| 1048 | res->lease_time = 0; |
| 1049 | return 0; |
| 1050 | } |
| 1051 | |
| 1052 | /* |
| 1053 | * Decode PATHCONF reply |
| 1054 | */ |
| 1055 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 1056 | 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] | 1057 | { |
| 1058 | int status; |
| 1059 | |
| 1060 | status = ntohl(*p++); |
| 1061 | |
| 1062 | p = xdr_decode_post_op_attr(p, res->fattr); |
| 1063 | if (status != 0) |
Benny Halevy | 856dff3 | 2008-03-31 17:39:06 +0300 | [diff] [blame] | 1064 | return nfs_stat_to_errno(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1065 | res->max_link = ntohl(*p++); |
| 1066 | res->max_namelen = ntohl(*p++); |
| 1067 | |
| 1068 | /* ignore remaining fields */ |
| 1069 | return 0; |
| 1070 | } |
| 1071 | |
| 1072 | /* |
| 1073 | * Decode COMMIT reply |
| 1074 | */ |
| 1075 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 1076 | 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] | 1077 | { |
| 1078 | int status; |
| 1079 | |
| 1080 | status = ntohl(*p++); |
| 1081 | p = xdr_decode_wcc_data(p, res->fattr); |
| 1082 | if (status != 0) |
Benny Halevy | 856dff3 | 2008-03-31 17:39:06 +0300 | [diff] [blame] | 1083 | return nfs_stat_to_errno(status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1084 | |
| 1085 | res->verf->verifier[0] = *p++; |
| 1086 | res->verf->verifier[1] = *p++; |
| 1087 | return 0; |
| 1088 | } |
| 1089 | |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 1090 | #ifdef CONFIG_NFS_V3_ACL |
| 1091 | /* |
| 1092 | * Decode GETACL reply |
| 1093 | */ |
| 1094 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 1095 | nfs3_xdr_getaclres(struct rpc_rqst *req, __be32 *p, |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 1096 | struct nfs3_getaclres *res) |
| 1097 | { |
| 1098 | struct xdr_buf *buf = &req->rq_rcv_buf; |
| 1099 | int status = ntohl(*p++); |
| 1100 | struct posix_acl **acl; |
| 1101 | unsigned int *aclcnt; |
| 1102 | int err, base; |
| 1103 | |
| 1104 | if (status != 0) |
Benny Halevy | 856dff3 | 2008-03-31 17:39:06 +0300 | [diff] [blame] | 1105 | return nfs_stat_to_errno(status); |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 1106 | p = xdr_decode_post_op_attr(p, res->fattr); |
| 1107 | res->mask = ntohl(*p++); |
| 1108 | if (res->mask & ~(NFS_ACL|NFS_ACLCNT|NFS_DFACL|NFS_DFACLCNT)) |
| 1109 | return -EINVAL; |
| 1110 | base = (char *)p - (char *)req->rq_rcv_buf.head->iov_base; |
| 1111 | |
| 1112 | acl = (res->mask & NFS_ACL) ? &res->acl_access : NULL; |
| 1113 | aclcnt = (res->mask & NFS_ACLCNT) ? &res->acl_access_count : NULL; |
| 1114 | err = nfsacl_decode(buf, base, aclcnt, acl); |
| 1115 | |
| 1116 | acl = (res->mask & NFS_DFACL) ? &res->acl_default : NULL; |
| 1117 | aclcnt = (res->mask & NFS_DFACLCNT) ? &res->acl_default_count : NULL; |
| 1118 | if (err > 0) |
| 1119 | err = nfsacl_decode(buf, base + err, aclcnt, acl); |
| 1120 | return (err > 0) ? 0 : err; |
| 1121 | } |
| 1122 | |
| 1123 | /* |
| 1124 | * Decode setacl reply. |
| 1125 | */ |
| 1126 | static int |
Al Viro | d61005a | 2006-10-19 23:28:48 -0700 | [diff] [blame] | 1127 | 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] | 1128 | { |
| 1129 | int status = ntohl(*p++); |
| 1130 | |
| 1131 | if (status) |
Benny Halevy | 856dff3 | 2008-03-31 17:39:06 +0300 | [diff] [blame] | 1132 | return nfs_stat_to_errno(status); |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 1133 | xdr_decode_post_op_attr(p, fattr); |
| 1134 | return 0; |
| 1135 | } |
| 1136 | #endif /* CONFIG_NFS_V3_ACL */ |
| 1137 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1138 | #define PROC(proc, argtype, restype, timer) \ |
| 1139 | [NFS3PROC_##proc] = { \ |
| 1140 | .p_proc = NFS3PROC_##proc, \ |
| 1141 | .p_encode = (kxdrproc_t) nfs3_xdr_##argtype, \ |
| 1142 | .p_decode = (kxdrproc_t) nfs3_xdr_##restype, \ |
Chuck Lever | 2bea90d | 2007-03-29 16:47:53 -0400 | [diff] [blame] | 1143 | .p_arglen = NFS3_##argtype##_sz, \ |
| 1144 | .p_replen = NFS3_##restype##_sz, \ |
Chuck Lever | cc0175c | 2006-03-20 13:44:22 -0500 | [diff] [blame] | 1145 | .p_timer = timer, \ |
| 1146 | .p_statidx = NFS3PROC_##proc, \ |
| 1147 | .p_name = #proc, \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1148 | } |
| 1149 | |
| 1150 | struct rpc_procinfo nfs3_procedures[] = { |
| 1151 | PROC(GETATTR, fhandle, attrstat, 1), |
| 1152 | PROC(SETATTR, sattrargs, wccstat, 0), |
| 1153 | PROC(LOOKUP, diropargs, lookupres, 2), |
| 1154 | PROC(ACCESS, accessargs, accessres, 1), |
| 1155 | PROC(READLINK, readlinkargs, readlinkres, 3), |
| 1156 | PROC(READ, readargs, readres, 3), |
| 1157 | PROC(WRITE, writeargs, writeres, 4), |
| 1158 | PROC(CREATE, createargs, createres, 0), |
| 1159 | PROC(MKDIR, mkdirargs, createres, 0), |
| 1160 | PROC(SYMLINK, symlinkargs, createres, 0), |
| 1161 | PROC(MKNOD, mknodargs, createres, 0), |
Trond Myklebust | 4fdc17b | 2007-07-14 15:39:57 -0400 | [diff] [blame] | 1162 | PROC(REMOVE, removeargs, removeres, 0), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1163 | PROC(RMDIR, diropargs, wccstat, 0), |
| 1164 | PROC(RENAME, renameargs, renameres, 0), |
| 1165 | PROC(LINK, linkargs, linkres, 0), |
| 1166 | PROC(READDIR, readdirargs, readdirres, 3), |
| 1167 | PROC(READDIRPLUS, readdirargs, readdirres, 3), |
| 1168 | PROC(FSSTAT, fhandle, fsstatres, 0), |
| 1169 | PROC(FSINFO, fhandle, fsinfores, 0), |
| 1170 | PROC(PATHCONF, fhandle, pathconfres, 0), |
| 1171 | PROC(COMMIT, commitargs, commitres, 5), |
| 1172 | }; |
| 1173 | |
| 1174 | struct rpc_version nfs_version3 = { |
| 1175 | .number = 3, |
Tobias Klauser | e8c96f8 | 2006-03-24 03:15:34 -0800 | [diff] [blame] | 1176 | .nrprocs = ARRAY_SIZE(nfs3_procedures), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1177 | .procs = nfs3_procedures |
| 1178 | }; |
| 1179 | |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 1180 | #ifdef CONFIG_NFS_V3_ACL |
| 1181 | static struct rpc_procinfo nfs3_acl_procedures[] = { |
| 1182 | [ACLPROC3_GETACL] = { |
| 1183 | .p_proc = ACLPROC3_GETACL, |
| 1184 | .p_encode = (kxdrproc_t) nfs3_xdr_getaclargs, |
| 1185 | .p_decode = (kxdrproc_t) nfs3_xdr_getaclres, |
Chuck Lever | 2bea90d | 2007-03-29 16:47:53 -0400 | [diff] [blame] | 1186 | .p_arglen = ACL3_getaclargs_sz, |
| 1187 | .p_replen = ACL3_getaclres_sz, |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 1188 | .p_timer = 1, |
Chuck Lever | cc0175c | 2006-03-20 13:44:22 -0500 | [diff] [blame] | 1189 | .p_name = "GETACL", |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 1190 | }, |
| 1191 | [ACLPROC3_SETACL] = { |
| 1192 | .p_proc = ACLPROC3_SETACL, |
| 1193 | .p_encode = (kxdrproc_t) nfs3_xdr_setaclargs, |
| 1194 | .p_decode = (kxdrproc_t) nfs3_xdr_setaclres, |
Chuck Lever | 2bea90d | 2007-03-29 16:47:53 -0400 | [diff] [blame] | 1195 | .p_arglen = ACL3_setaclargs_sz, |
| 1196 | .p_replen = ACL3_setaclres_sz, |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 1197 | .p_timer = 0, |
Chuck Lever | cc0175c | 2006-03-20 13:44:22 -0500 | [diff] [blame] | 1198 | .p_name = "SETACL", |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 1199 | }, |
| 1200 | }; |
| 1201 | |
| 1202 | struct rpc_version nfsacl_version3 = { |
| 1203 | .number = 3, |
| 1204 | .nrprocs = sizeof(nfs3_acl_procedures)/ |
| 1205 | sizeof(nfs3_acl_procedures[0]), |
| 1206 | .procs = nfs3_acl_procedures, |
| 1207 | }; |
| 1208 | #endif /* CONFIG_NFS_V3_ACL */ |