Greg Kroah-Hartman | b244131 | 2017-11-01 15:07:57 +0100 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | /* |
| 3 | * linux/fs/nfs/nfs3xdr.c |
| 4 | * |
| 5 | * XDR functions to encode/decode NFSv3 RPC arguments and results. |
| 6 | * |
| 7 | * Copyright (C) 1996, 1997 Olaf Kirch |
| 8 | */ |
| 9 | |
| 10 | #include <linux/param.h> |
| 11 | #include <linux/time.h> |
| 12 | #include <linux/mm.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | #include <linux/errno.h> |
| 14 | #include <linux/string.h> |
| 15 | #include <linux/in.h> |
| 16 | #include <linux/pagemap.h> |
| 17 | #include <linux/proc_fs.h> |
| 18 | #include <linux/kdev_t.h> |
| 19 | #include <linux/sunrpc/clnt.h> |
| 20 | #include <linux/nfs.h> |
| 21 | #include <linux/nfs3.h> |
| 22 | #include <linux/nfs_fs.h> |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 23 | #include <linux/nfsacl.h> |
Chuck Lever | f23f658 | 2019-02-11 11:24:26 -0500 | [diff] [blame] | 24 | #include "nfstrace.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 | */ |
Trond Myklebust | 9ed5af26 | 2020-11-21 20:46:18 -0500 | [diff] [blame] | 36 | #define NFS3_pagepad_sz (1) /* Page padding */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | #define NFS3_fhandle_sz (1+16) |
| 38 | #define NFS3_fh_sz (NFS3_fhandle_sz) /* shorthand */ |
Frank Sorenson | ad3dbe3 | 2021-03-08 12:12:13 -0600 | [diff] [blame] | 39 | #define NFS3_post_op_fh_sz (1+NFS3_fh_sz) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | #define NFS3_sattr_sz (15) |
| 41 | #define NFS3_filename_sz (1+(NFS3_MAXNAMLEN>>2)) |
| 42 | #define NFS3_path_sz (1+(NFS3_MAXPATHLEN>>2)) |
| 43 | #define NFS3_fattr_sz (21) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 44 | #define NFS3_cookieverf_sz (NFS3_COOKIEVERFSIZE>>2) |
Chuck Lever | f5fc3c50 | 2010-12-14 14:56:42 +0000 | [diff] [blame] | 45 | #define NFS3_wcc_attr_sz (6) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | #define NFS3_pre_op_attr_sz (1+NFS3_wcc_attr_sz) |
| 47 | #define NFS3_post_op_attr_sz (1+NFS3_fattr_sz) |
Chuck Lever | f5fc3c50 | 2010-12-14 14:56:42 +0000 | [diff] [blame] | 48 | #define NFS3_wcc_data_sz (NFS3_pre_op_attr_sz+NFS3_post_op_attr_sz) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | #define NFS3_diropargs_sz (NFS3_fh_sz+NFS3_filename_sz) |
Chuck Lever | ad96b5b | 2010-12-14 14:56:01 +0000 | [diff] [blame] | 50 | |
| 51 | #define NFS3_getattrargs_sz (NFS3_fh_sz) |
| 52 | #define NFS3_setattrargs_sz (NFS3_fh_sz+NFS3_sattr_sz+3) |
| 53 | #define NFS3_lookupargs_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) |
Chuck Lever | ad96b5b | 2010-12-14 14:56:01 +0000 | [diff] [blame] | 62 | #define NFS3_removeargs_sz (NFS3_fh_sz+NFS3_filename_sz) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 63 | #define NFS3_renameargs_sz (NFS3_diropargs_sz+NFS3_diropargs_sz) |
| 64 | #define NFS3_linkargs_sz (NFS3_fh_sz+NFS3_diropargs_sz) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 65 | #define NFS3_readdirargs_sz (NFS3_fh_sz+NFS3_cookieverf_sz+3) |
| 66 | #define NFS3_readdirplusargs_sz (NFS3_fh_sz+NFS3_cookieverf_sz+4) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | #define NFS3_commitargs_sz (NFS3_fh_sz+3) |
| 68 | |
Chuck Lever | f5fc3c50 | 2010-12-14 14:56:42 +0000 | [diff] [blame] | 69 | #define NFS3_getattrres_sz (1+NFS3_fattr_sz) |
| 70 | #define NFS3_setattrres_sz (1+NFS3_wcc_data_sz) |
| 71 | #define NFS3_removeres_sz (NFS3_setattrres_sz) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | #define NFS3_lookupres_sz (1+NFS3_fh_sz+(2 * NFS3_post_op_attr_sz)) |
| 73 | #define NFS3_accessres_sz (1+NFS3_post_op_attr_sz+1) |
Trond Myklebust | 9ed5af26 | 2020-11-21 20:46:18 -0500 | [diff] [blame] | 74 | #define NFS3_readlinkres_sz (1+NFS3_post_op_attr_sz+1+NFS3_pagepad_sz) |
| 75 | #define NFS3_readres_sz (1+NFS3_post_op_attr_sz+3+NFS3_pagepad_sz) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | #define NFS3_writeres_sz (1+NFS3_wcc_data_sz+4) |
Frank Sorenson | ad3dbe3 | 2021-03-08 12:12:13 -0600 | [diff] [blame] | 77 | #define NFS3_createres_sz (1+NFS3_post_op_fh_sz+NFS3_post_op_attr_sz+NFS3_wcc_data_sz) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | #define NFS3_renameres_sz (1+(2 * NFS3_wcc_data_sz)) |
| 79 | #define NFS3_linkres_sz (1+NFS3_post_op_attr_sz+NFS3_wcc_data_sz) |
Trond Myklebust | 9ed5af26 | 2020-11-21 20:46:18 -0500 | [diff] [blame] | 80 | #define NFS3_readdirres_sz (1+NFS3_post_op_attr_sz+2+NFS3_pagepad_sz) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | #define NFS3_fsstatres_sz (1+NFS3_post_op_attr_sz+13) |
| 82 | #define NFS3_fsinfores_sz (1+NFS3_post_op_attr_sz+12) |
| 83 | #define NFS3_pathconfres_sz (1+NFS3_post_op_attr_sz+6) |
| 84 | #define NFS3_commitres_sz (1+NFS3_wcc_data_sz+2) |
| 85 | |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 86 | #define ACL3_getaclargs_sz (NFS3_fh_sz+1) |
Trond Myklebust | ae46141f | 2009-03-10 20:33:18 -0400 | [diff] [blame] | 87 | #define ACL3_setaclargs_sz (NFS3_fh_sz+1+ \ |
| 88 | XDR_QUADLEN(NFS_ACL_INLINE_BUFSIZE)) |
| 89 | #define ACL3_getaclres_sz (1+NFS3_post_op_attr_sz+1+ \ |
Trond Myklebust | 9ed5af26 | 2020-11-21 20:46:18 -0500 | [diff] [blame] | 90 | XDR_QUADLEN(NFS_ACL_INLINE_BUFSIZE)+\ |
| 91 | NFS3_pagepad_sz) |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 92 | #define ACL3_setaclres_sz (1+NFS3_post_op_attr_sz) |
| 93 | |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 94 | static int nfs3_stat_to_errno(enum nfs_stat); |
| 95 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 96 | /* |
| 97 | * Map file type to S_IFMT bits |
| 98 | */ |
Trond Myklebust | bca7947 | 2009-03-11 14:10:26 -0400 | [diff] [blame] | 99 | static const umode_t nfs_type2fmt[] = { |
| 100 | [NF3BAD] = 0, |
| 101 | [NF3REG] = S_IFREG, |
| 102 | [NF3DIR] = S_IFDIR, |
| 103 | [NF3BLK] = S_IFBLK, |
| 104 | [NF3CHR] = S_IFCHR, |
| 105 | [NF3LNK] = S_IFLNK, |
| 106 | [NF3SOCK] = S_IFSOCK, |
| 107 | [NF3FIFO] = S_IFIFO, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | }; |
| 109 | |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 110 | static struct user_namespace *rpc_userns(const struct rpc_clnt *clnt) |
| 111 | { |
| 112 | if (clnt && clnt->cl_cred) |
| 113 | return clnt->cl_cred->user_ns; |
| 114 | return &init_user_ns; |
| 115 | } |
| 116 | |
| 117 | static struct user_namespace *rpc_rqst_userns(const struct rpc_rqst *rqstp) |
| 118 | { |
| 119 | if (rqstp->rq_task) |
| 120 | return rpc_userns(rqstp->rq_task->tk_client); |
| 121 | return &init_user_ns; |
| 122 | } |
| 123 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 125 | * Encode/decode NFSv3 basic data types |
| 126 | * |
| 127 | * Basic NFSv3 data types are defined in section 2.5 of RFC 1813: |
| 128 | * "NFS Version 3 Protocol Specification". |
| 129 | * |
| 130 | * Not all basic data types have their own encoding and decoding |
| 131 | * functions. For run-time efficiency, some data types are encoded |
| 132 | * or decoded inline. |
| 133 | */ |
| 134 | |
| 135 | static void encode_uint32(struct xdr_stream *xdr, u32 value) |
| 136 | { |
| 137 | __be32 *p = xdr_reserve_space(xdr, 4); |
| 138 | *p = cpu_to_be32(value); |
| 139 | } |
| 140 | |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 141 | static int decode_uint32(struct xdr_stream *xdr, u32 *value) |
| 142 | { |
| 143 | __be32 *p; |
| 144 | |
| 145 | p = xdr_inline_decode(xdr, 4); |
Chuck Lever | eb72f48 | 2019-02-11 11:24:21 -0500 | [diff] [blame] | 146 | if (unlikely(!p)) |
| 147 | return -EIO; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 148 | *value = be32_to_cpup(p); |
| 149 | return 0; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 150 | } |
| 151 | |
| 152 | static int decode_uint64(struct xdr_stream *xdr, u64 *value) |
| 153 | { |
| 154 | __be32 *p; |
| 155 | |
| 156 | p = xdr_inline_decode(xdr, 8); |
Chuck Lever | eb72f48 | 2019-02-11 11:24:21 -0500 | [diff] [blame] | 157 | if (unlikely(!p)) |
| 158 | return -EIO; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 159 | xdr_decode_hyper(p, value); |
| 160 | return 0; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 161 | } |
| 162 | |
| 163 | /* |
| 164 | * fileid3 |
| 165 | * |
| 166 | * typedef uint64 fileid3; |
| 167 | */ |
Chuck Lever | f604870 | 2010-12-14 14:57:02 +0000 | [diff] [blame] | 168 | static __be32 *xdr_decode_fileid3(__be32 *p, u64 *fileid) |
| 169 | { |
| 170 | return xdr_decode_hyper(p, fileid); |
| 171 | } |
| 172 | |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 173 | static int decode_fileid3(struct xdr_stream *xdr, u64 *fileid) |
| 174 | { |
| 175 | return decode_uint64(xdr, fileid); |
| 176 | } |
| 177 | |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 178 | /* |
| 179 | * filename3 |
| 180 | * |
| 181 | * typedef string filename3<>; |
| 182 | */ |
| 183 | static void encode_filename3(struct xdr_stream *xdr, |
| 184 | const char *name, u32 length) |
| 185 | { |
| 186 | __be32 *p; |
| 187 | |
Trond Myklebust | 7fc3884 | 2012-10-15 11:51:21 -0400 | [diff] [blame] | 188 | WARN_ON_ONCE(length > NFS3_MAXNAMLEN); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 189 | p = xdr_reserve_space(xdr, 4 + length); |
| 190 | xdr_encode_opaque(p, name, length); |
| 191 | } |
| 192 | |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 193 | static int decode_inline_filename3(struct xdr_stream *xdr, |
| 194 | const char **name, u32 *length) |
| 195 | { |
| 196 | __be32 *p; |
| 197 | u32 count; |
| 198 | |
| 199 | p = xdr_inline_decode(xdr, 4); |
Chuck Lever | eb72f48 | 2019-02-11 11:24:21 -0500 | [diff] [blame] | 200 | if (unlikely(!p)) |
| 201 | return -EIO; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 202 | count = be32_to_cpup(p); |
| 203 | if (count > NFS3_MAXNAMLEN) |
| 204 | goto out_nametoolong; |
| 205 | p = xdr_inline_decode(xdr, count); |
Chuck Lever | eb72f48 | 2019-02-11 11:24:21 -0500 | [diff] [blame] | 206 | if (unlikely(!p)) |
| 207 | return -EIO; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 208 | *name = (const char *)p; |
| 209 | *length = count; |
| 210 | return 0; |
| 211 | |
| 212 | out_nametoolong: |
| 213 | dprintk("NFS: returned filename too long: %u\n", count); |
| 214 | return -ENAMETOOLONG; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 215 | } |
| 216 | |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 217 | /* |
| 218 | * nfspath3 |
| 219 | * |
| 220 | * typedef string nfspath3<>; |
| 221 | */ |
| 222 | static void encode_nfspath3(struct xdr_stream *xdr, struct page **pages, |
| 223 | const u32 length) |
| 224 | { |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 225 | encode_uint32(xdr, length); |
| 226 | xdr_write_pages(xdr, pages, 0, length); |
| 227 | } |
| 228 | |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 229 | static int decode_nfspath3(struct xdr_stream *xdr) |
| 230 | { |
| 231 | u32 recvd, count; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 232 | __be32 *p; |
| 233 | |
| 234 | p = xdr_inline_decode(xdr, 4); |
Chuck Lever | eb72f48 | 2019-02-11 11:24:21 -0500 | [diff] [blame] | 235 | if (unlikely(!p)) |
| 236 | return -EIO; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 237 | count = be32_to_cpup(p); |
| 238 | if (unlikely(count >= xdr->buf->page_len || count > NFS3_MAXPATHLEN)) |
| 239 | goto out_nametoolong; |
Trond Myklebust | 64bd577 | 2012-06-20 22:35:05 -0400 | [diff] [blame] | 240 | recvd = xdr_read_pages(xdr, count); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 241 | if (unlikely(count > recvd)) |
| 242 | goto out_cheating; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 243 | xdr_terminate_string(xdr->buf, count); |
| 244 | return 0; |
| 245 | |
| 246 | out_nametoolong: |
| 247 | dprintk("NFS: returned pathname too long: %u\n", count); |
| 248 | return -ENAMETOOLONG; |
| 249 | out_cheating: |
| 250 | dprintk("NFS: server cheating in pathname result: " |
| 251 | "count %u > recvd %u\n", count, recvd); |
| 252 | return -EIO; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 253 | } |
| 254 | |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 255 | /* |
| 256 | * cookie3 |
| 257 | * |
| 258 | * typedef uint64 cookie3 |
| 259 | */ |
| 260 | static __be32 *xdr_encode_cookie3(__be32 *p, u64 cookie) |
| 261 | { |
| 262 | return xdr_encode_hyper(p, cookie); |
| 263 | } |
| 264 | |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 265 | static int decode_cookie3(struct xdr_stream *xdr, u64 *cookie) |
| 266 | { |
| 267 | return decode_uint64(xdr, cookie); |
| 268 | } |
| 269 | |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 270 | /* |
| 271 | * cookieverf3 |
| 272 | * |
| 273 | * typedef opaque cookieverf3[NFS3_COOKIEVERFSIZE]; |
| 274 | */ |
| 275 | static __be32 *xdr_encode_cookieverf3(__be32 *p, const __be32 *verifier) |
| 276 | { |
| 277 | memcpy(p, verifier, NFS3_COOKIEVERFSIZE); |
| 278 | return p + XDR_QUADLEN(NFS3_COOKIEVERFSIZE); |
| 279 | } |
| 280 | |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 281 | static int decode_cookieverf3(struct xdr_stream *xdr, __be32 *verifier) |
| 282 | { |
| 283 | __be32 *p; |
| 284 | |
| 285 | p = xdr_inline_decode(xdr, NFS3_COOKIEVERFSIZE); |
Chuck Lever | eb72f48 | 2019-02-11 11:24:21 -0500 | [diff] [blame] | 286 | if (unlikely(!p)) |
| 287 | return -EIO; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 288 | memcpy(verifier, p, NFS3_COOKIEVERFSIZE); |
| 289 | return 0; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 290 | } |
| 291 | |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 292 | /* |
| 293 | * createverf3 |
| 294 | * |
| 295 | * typedef opaque createverf3[NFS3_CREATEVERFSIZE]; |
| 296 | */ |
| 297 | static void encode_createverf3(struct xdr_stream *xdr, const __be32 *verifier) |
| 298 | { |
| 299 | __be32 *p; |
| 300 | |
| 301 | p = xdr_reserve_space(xdr, NFS3_CREATEVERFSIZE); |
| 302 | memcpy(p, verifier, NFS3_CREATEVERFSIZE); |
| 303 | } |
| 304 | |
Trond Myklebust | 2f2c63b | 2012-06-08 11:56:09 -0400 | [diff] [blame] | 305 | static int decode_writeverf3(struct xdr_stream *xdr, struct nfs_write_verifier *verifier) |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 306 | { |
| 307 | __be32 *p; |
| 308 | |
| 309 | p = xdr_inline_decode(xdr, NFS3_WRITEVERFSIZE); |
Chuck Lever | eb72f48 | 2019-02-11 11:24:21 -0500 | [diff] [blame] | 310 | if (unlikely(!p)) |
| 311 | return -EIO; |
Trond Myklebust | 2f2c63b | 2012-06-08 11:56:09 -0400 | [diff] [blame] | 312 | memcpy(verifier->data, p, NFS3_WRITEVERFSIZE); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 313 | return 0; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 314 | } |
| 315 | |
| 316 | /* |
| 317 | * size3 |
| 318 | * |
| 319 | * typedef uint64 size3; |
| 320 | */ |
| 321 | static __be32 *xdr_decode_size3(__be32 *p, u64 *size) |
| 322 | { |
| 323 | return xdr_decode_hyper(p, size); |
| 324 | } |
| 325 | |
| 326 | /* |
| 327 | * nfsstat3 |
| 328 | * |
| 329 | * enum nfsstat3 { |
| 330 | * NFS3_OK = 0, |
| 331 | * ... |
| 332 | * } |
| 333 | */ |
| 334 | #define NFS3_OK NFS_OK |
| 335 | |
| 336 | static int decode_nfsstat3(struct xdr_stream *xdr, enum nfs_stat *status) |
| 337 | { |
| 338 | __be32 *p; |
| 339 | |
| 340 | p = xdr_inline_decode(xdr, 4); |
Chuck Lever | eb72f48 | 2019-02-11 11:24:21 -0500 | [diff] [blame] | 341 | if (unlikely(!p)) |
| 342 | return -EIO; |
Chuck Lever | f23f658 | 2019-02-11 11:24:26 -0500 | [diff] [blame] | 343 | if (unlikely(*p != cpu_to_be32(NFS3_OK))) |
| 344 | goto out_status; |
| 345 | *status = 0; |
| 346 | return 0; |
| 347 | out_status: |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 348 | *status = be32_to_cpup(p); |
Chuck Lever | 62a92ba | 2019-06-19 10:34:09 -0400 | [diff] [blame] | 349 | trace_nfs_xdr_status(xdr, (int)*status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 350 | return 0; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 351 | } |
| 352 | |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 353 | /* |
| 354 | * ftype3 |
| 355 | * |
| 356 | * enum ftype3 { |
| 357 | * NF3REG = 1, |
| 358 | * NF3DIR = 2, |
| 359 | * NF3BLK = 3, |
| 360 | * NF3CHR = 4, |
| 361 | * NF3LNK = 5, |
| 362 | * NF3SOCK = 6, |
| 363 | * NF3FIFO = 7 |
| 364 | * }; |
| 365 | */ |
| 366 | static void encode_ftype3(struct xdr_stream *xdr, const u32 type) |
| 367 | { |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 368 | encode_uint32(xdr, type); |
| 369 | } |
| 370 | |
Chuck Lever | f604870 | 2010-12-14 14:57:02 +0000 | [diff] [blame] | 371 | static __be32 *xdr_decode_ftype3(__be32 *p, umode_t *mode) |
| 372 | { |
| 373 | u32 type; |
| 374 | |
| 375 | type = be32_to_cpup(p++); |
| 376 | if (type > NF3FIFO) |
| 377 | type = NF3NON; |
| 378 | *mode = nfs_type2fmt[type]; |
| 379 | return p; |
| 380 | } |
| 381 | |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 382 | /* |
| 383 | * specdata3 |
| 384 | * |
| 385 | * struct specdata3 { |
| 386 | * uint32 specdata1; |
| 387 | * uint32 specdata2; |
| 388 | * }; |
| 389 | */ |
| 390 | static void encode_specdata3(struct xdr_stream *xdr, const dev_t rdev) |
| 391 | { |
| 392 | __be32 *p; |
| 393 | |
| 394 | p = xdr_reserve_space(xdr, 8); |
| 395 | *p++ = cpu_to_be32(MAJOR(rdev)); |
| 396 | *p = cpu_to_be32(MINOR(rdev)); |
| 397 | } |
| 398 | |
Chuck Lever | f604870 | 2010-12-14 14:57:02 +0000 | [diff] [blame] | 399 | static __be32 *xdr_decode_specdata3(__be32 *p, dev_t *rdev) |
| 400 | { |
| 401 | unsigned int major, minor; |
| 402 | |
| 403 | major = be32_to_cpup(p++); |
| 404 | minor = be32_to_cpup(p++); |
| 405 | *rdev = MKDEV(major, minor); |
| 406 | if (MAJOR(*rdev) != major || MINOR(*rdev) != minor) |
| 407 | *rdev = 0; |
| 408 | return p; |
| 409 | } |
| 410 | |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 411 | /* |
| 412 | * nfs_fh3 |
| 413 | * |
| 414 | * struct nfs_fh3 { |
| 415 | * opaque data<NFS3_FHSIZE>; |
| 416 | * }; |
| 417 | */ |
| 418 | static void encode_nfs_fh3(struct xdr_stream *xdr, const struct nfs_fh *fh) |
| 419 | { |
| 420 | __be32 *p; |
| 421 | |
Trond Myklebust | 7fc3884 | 2012-10-15 11:51:21 -0400 | [diff] [blame] | 422 | WARN_ON_ONCE(fh->size > NFS3_FHSIZE); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 423 | p = xdr_reserve_space(xdr, 4 + fh->size); |
| 424 | xdr_encode_opaque(p, fh->data, fh->size); |
| 425 | } |
| 426 | |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 427 | static int decode_nfs_fh3(struct xdr_stream *xdr, struct nfs_fh *fh) |
| 428 | { |
| 429 | u32 length; |
| 430 | __be32 *p; |
| 431 | |
| 432 | p = xdr_inline_decode(xdr, 4); |
Chuck Lever | eb72f48 | 2019-02-11 11:24:21 -0500 | [diff] [blame] | 433 | if (unlikely(!p)) |
| 434 | return -EIO; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 435 | length = be32_to_cpup(p++); |
Trond Myklebust | eb3d58c | 2021-04-01 14:03:26 -0400 | [diff] [blame] | 436 | if (unlikely(length > NFS3_FHSIZE || length == 0)) |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 437 | goto out_toobig; |
| 438 | p = xdr_inline_decode(xdr, length); |
Chuck Lever | eb72f48 | 2019-02-11 11:24:21 -0500 | [diff] [blame] | 439 | if (unlikely(!p)) |
| 440 | return -EIO; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 441 | fh->size = length; |
| 442 | memcpy(fh->data, p, length); |
| 443 | return 0; |
| 444 | out_toobig: |
Trond Myklebust | eb3d58c | 2021-04-01 14:03:26 -0400 | [diff] [blame] | 445 | trace_nfs_xdr_bad_filehandle(xdr, NFSERR_BADHANDLE); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 446 | return -E2BIG; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 447 | } |
| 448 | |
| 449 | static void zero_nfs_fh3(struct nfs_fh *fh) |
| 450 | { |
| 451 | memset(fh, 0, sizeof(*fh)); |
| 452 | } |
| 453 | |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 454 | /* |
Chuck Lever | 9d5a643 | 2010-12-14 14:56:20 +0000 | [diff] [blame] | 455 | * nfstime3 |
| 456 | * |
| 457 | * struct nfstime3 { |
| 458 | * uint32 seconds; |
| 459 | * uint32 nseconds; |
| 460 | * }; |
| 461 | */ |
Trond Myklebust | 6430b32 | 2019-10-04 17:00:02 -0400 | [diff] [blame] | 462 | static __be32 *xdr_encode_nfstime3(__be32 *p, const struct timespec64 *timep) |
Chuck Lever | 9d5a643 | 2010-12-14 14:56:20 +0000 | [diff] [blame] | 463 | { |
Trond Myklebust | 6430b32 | 2019-10-04 17:00:02 -0400 | [diff] [blame] | 464 | *p++ = cpu_to_be32((u32)timep->tv_sec); |
Chuck Lever | 9d5a643 | 2010-12-14 14:56:20 +0000 | [diff] [blame] | 465 | *p++ = cpu_to_be32(timep->tv_nsec); |
| 466 | return p; |
| 467 | } |
| 468 | |
Trond Myklebust | e86d5a0 | 2019-10-04 16:38:56 -0400 | [diff] [blame] | 469 | static __be32 *xdr_decode_nfstime3(__be32 *p, struct timespec64 *timep) |
Chuck Lever | f604870 | 2010-12-14 14:57:02 +0000 | [diff] [blame] | 470 | { |
| 471 | timep->tv_sec = be32_to_cpup(p++); |
| 472 | timep->tv_nsec = be32_to_cpup(p++); |
| 473 | return p; |
| 474 | } |
| 475 | |
Chuck Lever | 9d5a643 | 2010-12-14 14:56:20 +0000 | [diff] [blame] | 476 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 477 | * sattr3 |
| 478 | * |
| 479 | * enum time_how { |
| 480 | * DONT_CHANGE = 0, |
| 481 | * SET_TO_SERVER_TIME = 1, |
| 482 | * SET_TO_CLIENT_TIME = 2 |
| 483 | * }; |
| 484 | * |
| 485 | * union set_mode3 switch (bool set_it) { |
| 486 | * case TRUE: |
| 487 | * mode3 mode; |
| 488 | * default: |
| 489 | * void; |
| 490 | * }; |
| 491 | * |
| 492 | * union set_uid3 switch (bool set_it) { |
| 493 | * case TRUE: |
| 494 | * uid3 uid; |
| 495 | * default: |
| 496 | * void; |
| 497 | * }; |
| 498 | * |
| 499 | * union set_gid3 switch (bool set_it) { |
| 500 | * case TRUE: |
| 501 | * gid3 gid; |
| 502 | * default: |
| 503 | * void; |
| 504 | * }; |
| 505 | * |
| 506 | * union set_size3 switch (bool set_it) { |
| 507 | * case TRUE: |
| 508 | * size3 size; |
| 509 | * default: |
| 510 | * void; |
| 511 | * }; |
| 512 | * |
| 513 | * union set_atime switch (time_how set_it) { |
| 514 | * case SET_TO_CLIENT_TIME: |
| 515 | * nfstime3 atime; |
| 516 | * default: |
| 517 | * void; |
| 518 | * }; |
| 519 | * |
| 520 | * union set_mtime switch (time_how set_it) { |
| 521 | * case SET_TO_CLIENT_TIME: |
| 522 | * nfstime3 mtime; |
| 523 | * default: |
| 524 | * void; |
| 525 | * }; |
| 526 | * |
| 527 | * struct sattr3 { |
| 528 | * set_mode3 mode; |
| 529 | * set_uid3 uid; |
| 530 | * set_gid3 gid; |
| 531 | * set_size3 size; |
| 532 | * set_atime atime; |
| 533 | * set_mtime mtime; |
| 534 | * }; |
| 535 | */ |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 536 | static void encode_sattr3(struct xdr_stream *xdr, const struct iattr *attr, |
| 537 | struct user_namespace *userns) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 538 | { |
| 539 | u32 nbytes; |
| 540 | __be32 *p; |
| 541 | |
| 542 | /* |
| 543 | * In order to make only a single xdr_reserve_space() call, |
| 544 | * pre-compute the total number of bytes to be reserved. |
| 545 | * Six boolean values, one for each set_foo field, are always |
| 546 | * present in the encoded result, so start there. |
| 547 | */ |
| 548 | nbytes = 6 * 4; |
| 549 | if (attr->ia_valid & ATTR_MODE) |
| 550 | nbytes += 4; |
| 551 | if (attr->ia_valid & ATTR_UID) |
| 552 | nbytes += 4; |
| 553 | if (attr->ia_valid & ATTR_GID) |
| 554 | nbytes += 4; |
| 555 | if (attr->ia_valid & ATTR_SIZE) |
| 556 | nbytes += 8; |
| 557 | if (attr->ia_valid & ATTR_ATIME_SET) |
| 558 | nbytes += 8; |
| 559 | if (attr->ia_valid & ATTR_MTIME_SET) |
| 560 | nbytes += 8; |
| 561 | p = xdr_reserve_space(xdr, nbytes); |
| 562 | |
Chuck Lever | 9d5a643 | 2010-12-14 14:56:20 +0000 | [diff] [blame] | 563 | if (attr->ia_valid & ATTR_MODE) { |
| 564 | *p++ = xdr_one; |
| 565 | *p++ = cpu_to_be32(attr->ia_mode & S_IALLUGO); |
| 566 | } else |
| 567 | *p++ = xdr_zero; |
| 568 | |
| 569 | if (attr->ia_valid & ATTR_UID) { |
| 570 | *p++ = xdr_one; |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 571 | *p++ = cpu_to_be32(from_kuid_munged(userns, attr->ia_uid)); |
Chuck Lever | 9d5a643 | 2010-12-14 14:56:20 +0000 | [diff] [blame] | 572 | } else |
| 573 | *p++ = xdr_zero; |
| 574 | |
| 575 | if (attr->ia_valid & ATTR_GID) { |
| 576 | *p++ = xdr_one; |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 577 | *p++ = cpu_to_be32(from_kgid_munged(userns, attr->ia_gid)); |
Chuck Lever | 9d5a643 | 2010-12-14 14:56:20 +0000 | [diff] [blame] | 578 | } else |
| 579 | *p++ = xdr_zero; |
| 580 | |
| 581 | if (attr->ia_valid & ATTR_SIZE) { |
| 582 | *p++ = xdr_one; |
| 583 | p = xdr_encode_hyper(p, (u64)attr->ia_size); |
| 584 | } else |
| 585 | *p++ = xdr_zero; |
| 586 | |
| 587 | if (attr->ia_valid & ATTR_ATIME_SET) { |
| 588 | *p++ = xdr_two; |
Trond Myklebust | 6430b32 | 2019-10-04 17:00:02 -0400 | [diff] [blame] | 589 | p = xdr_encode_nfstime3(p, &attr->ia_atime); |
Chuck Lever | 9d5a643 | 2010-12-14 14:56:20 +0000 | [diff] [blame] | 590 | } else if (attr->ia_valid & ATTR_ATIME) { |
| 591 | *p++ = xdr_one; |
| 592 | } else |
| 593 | *p++ = xdr_zero; |
| 594 | |
| 595 | if (attr->ia_valid & ATTR_MTIME_SET) { |
| 596 | *p++ = xdr_two; |
Trond Myklebust | 6430b32 | 2019-10-04 17:00:02 -0400 | [diff] [blame] | 597 | xdr_encode_nfstime3(p, &attr->ia_mtime); |
Chuck Lever | 9d5a643 | 2010-12-14 14:56:20 +0000 | [diff] [blame] | 598 | } else if (attr->ia_valid & ATTR_MTIME) { |
| 599 | *p = xdr_one; |
| 600 | } else |
| 601 | *p = xdr_zero; |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 602 | } |
| 603 | |
| 604 | /* |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 605 | * fattr3 |
| 606 | * |
| 607 | * struct fattr3 { |
| 608 | * ftype3 type; |
| 609 | * mode3 mode; |
| 610 | * uint32 nlink; |
| 611 | * uid3 uid; |
| 612 | * gid3 gid; |
| 613 | * size3 size; |
| 614 | * size3 used; |
| 615 | * specdata3 rdev; |
| 616 | * uint64 fsid; |
| 617 | * fileid3 fileid; |
| 618 | * nfstime3 atime; |
| 619 | * nfstime3 mtime; |
| 620 | * nfstime3 ctime; |
| 621 | * }; |
| 622 | */ |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 623 | static int decode_fattr3(struct xdr_stream *xdr, struct nfs_fattr *fattr, |
| 624 | struct user_namespace *userns) |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 625 | { |
Chuck Lever | f604870 | 2010-12-14 14:57:02 +0000 | [diff] [blame] | 626 | umode_t fmode; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 627 | __be32 *p; |
| 628 | |
| 629 | p = xdr_inline_decode(xdr, NFS3_fattr_sz << 2); |
Chuck Lever | eb72f48 | 2019-02-11 11:24:21 -0500 | [diff] [blame] | 630 | if (unlikely(!p)) |
| 631 | return -EIO; |
Chuck Lever | f604870 | 2010-12-14 14:57:02 +0000 | [diff] [blame] | 632 | |
| 633 | p = xdr_decode_ftype3(p, &fmode); |
| 634 | |
| 635 | fattr->mode = (be32_to_cpup(p++) & ~S_IFMT) | fmode; |
| 636 | fattr->nlink = be32_to_cpup(p++); |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 637 | fattr->uid = make_kuid(userns, be32_to_cpup(p++)); |
Eric W. Biederman | 57a38da | 2013-02-01 03:50:00 -0800 | [diff] [blame] | 638 | if (!uid_valid(fattr->uid)) |
| 639 | goto out_uid; |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 640 | fattr->gid = make_kgid(userns, be32_to_cpup(p++)); |
Eric W. Biederman | 57a38da | 2013-02-01 03:50:00 -0800 | [diff] [blame] | 641 | if (!gid_valid(fattr->gid)) |
| 642 | goto out_gid; |
Chuck Lever | f604870 | 2010-12-14 14:57:02 +0000 | [diff] [blame] | 643 | |
| 644 | p = xdr_decode_size3(p, &fattr->size); |
| 645 | p = xdr_decode_size3(p, &fattr->du.nfs3.used); |
| 646 | p = xdr_decode_specdata3(p, &fattr->rdev); |
| 647 | |
| 648 | p = xdr_decode_hyper(p, &fattr->fsid.major); |
| 649 | fattr->fsid.minor = 0; |
| 650 | |
| 651 | p = xdr_decode_fileid3(p, &fattr->fileid); |
| 652 | p = xdr_decode_nfstime3(p, &fattr->atime); |
| 653 | p = xdr_decode_nfstime3(p, &fattr->mtime); |
| 654 | xdr_decode_nfstime3(p, &fattr->ctime); |
Trond Myklebust | 3a1556e | 2012-04-27 13:48:18 -0400 | [diff] [blame] | 655 | fattr->change_attr = nfs_timespec_to_change_attr(&fattr->ctime); |
Chuck Lever | f604870 | 2010-12-14 14:57:02 +0000 | [diff] [blame] | 656 | |
| 657 | fattr->valid |= NFS_ATTR_FATTR_V3; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 658 | return 0; |
Eric W. Biederman | 57a38da | 2013-02-01 03:50:00 -0800 | [diff] [blame] | 659 | out_uid: |
| 660 | dprintk("NFS: returned invalid uid\n"); |
| 661 | return -EINVAL; |
| 662 | out_gid: |
| 663 | dprintk("NFS: returned invalid gid\n"); |
| 664 | return -EINVAL; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 665 | } |
| 666 | |
| 667 | /* |
| 668 | * post_op_attr |
| 669 | * |
| 670 | * union post_op_attr switch (bool attributes_follow) { |
| 671 | * case TRUE: |
| 672 | * fattr3 attributes; |
| 673 | * case FALSE: |
| 674 | * void; |
| 675 | * }; |
| 676 | */ |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 677 | static int decode_post_op_attr(struct xdr_stream *xdr, struct nfs_fattr *fattr, |
| 678 | struct user_namespace *userns) |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 679 | { |
| 680 | __be32 *p; |
| 681 | |
| 682 | p = xdr_inline_decode(xdr, 4); |
Chuck Lever | eb72f48 | 2019-02-11 11:24:21 -0500 | [diff] [blame] | 683 | if (unlikely(!p)) |
| 684 | return -EIO; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 685 | if (*p != xdr_zero) |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 686 | return decode_fattr3(xdr, fattr, userns); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 687 | return 0; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 688 | } |
| 689 | |
| 690 | /* |
| 691 | * wcc_attr |
| 692 | * struct wcc_attr { |
| 693 | * size3 size; |
| 694 | * nfstime3 mtime; |
| 695 | * nfstime3 ctime; |
| 696 | * }; |
| 697 | */ |
| 698 | static int decode_wcc_attr(struct xdr_stream *xdr, struct nfs_fattr *fattr) |
| 699 | { |
| 700 | __be32 *p; |
| 701 | |
| 702 | p = xdr_inline_decode(xdr, NFS3_wcc_attr_sz << 2); |
Chuck Lever | eb72f48 | 2019-02-11 11:24:21 -0500 | [diff] [blame] | 703 | if (unlikely(!p)) |
| 704 | return -EIO; |
Chuck Lever | f604870 | 2010-12-14 14:57:02 +0000 | [diff] [blame] | 705 | |
| 706 | fattr->valid |= NFS_ATTR_FATTR_PRESIZE |
Trond Myklebust | 3a1556e | 2012-04-27 13:48:18 -0400 | [diff] [blame] | 707 | | NFS_ATTR_FATTR_PRECHANGE |
Chuck Lever | f604870 | 2010-12-14 14:57:02 +0000 | [diff] [blame] | 708 | | NFS_ATTR_FATTR_PREMTIME |
| 709 | | NFS_ATTR_FATTR_PRECTIME; |
| 710 | |
| 711 | p = xdr_decode_size3(p, &fattr->pre_size); |
| 712 | p = xdr_decode_nfstime3(p, &fattr->pre_mtime); |
| 713 | xdr_decode_nfstime3(p, &fattr->pre_ctime); |
Trond Myklebust | 3a1556e | 2012-04-27 13:48:18 -0400 | [diff] [blame] | 714 | fattr->pre_change_attr = nfs_timespec_to_change_attr(&fattr->pre_ctime); |
Chuck Lever | f604870 | 2010-12-14 14:57:02 +0000 | [diff] [blame] | 715 | |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 716 | return 0; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 717 | } |
| 718 | |
| 719 | /* |
| 720 | * pre_op_attr |
| 721 | * union pre_op_attr switch (bool attributes_follow) { |
| 722 | * case TRUE: |
| 723 | * wcc_attr attributes; |
| 724 | * case FALSE: |
| 725 | * void; |
| 726 | * }; |
| 727 | * |
| 728 | * wcc_data |
| 729 | * |
| 730 | * struct wcc_data { |
| 731 | * pre_op_attr before; |
| 732 | * post_op_attr after; |
| 733 | * }; |
| 734 | */ |
| 735 | static int decode_pre_op_attr(struct xdr_stream *xdr, struct nfs_fattr *fattr) |
| 736 | { |
| 737 | __be32 *p; |
| 738 | |
| 739 | p = xdr_inline_decode(xdr, 4); |
Chuck Lever | eb72f48 | 2019-02-11 11:24:21 -0500 | [diff] [blame] | 740 | if (unlikely(!p)) |
| 741 | return -EIO; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 742 | if (*p != xdr_zero) |
| 743 | return decode_wcc_attr(xdr, fattr); |
| 744 | return 0; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 745 | } |
| 746 | |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 747 | static int decode_wcc_data(struct xdr_stream *xdr, struct nfs_fattr *fattr, |
| 748 | struct user_namespace *userns) |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 749 | { |
| 750 | int error; |
| 751 | |
| 752 | error = decode_pre_op_attr(xdr, fattr); |
| 753 | if (unlikely(error)) |
| 754 | goto out; |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 755 | error = decode_post_op_attr(xdr, fattr, userns); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 756 | out: |
| 757 | return error; |
| 758 | } |
| 759 | |
| 760 | /* |
| 761 | * post_op_fh3 |
| 762 | * |
| 763 | * union post_op_fh3 switch (bool handle_follows) { |
| 764 | * case TRUE: |
| 765 | * nfs_fh3 handle; |
| 766 | * case FALSE: |
| 767 | * void; |
| 768 | * }; |
| 769 | */ |
| 770 | static int decode_post_op_fh3(struct xdr_stream *xdr, struct nfs_fh *fh) |
| 771 | { |
| 772 | __be32 *p = xdr_inline_decode(xdr, 4); |
Chuck Lever | eb72f48 | 2019-02-11 11:24:21 -0500 | [diff] [blame] | 773 | if (unlikely(!p)) |
| 774 | return -EIO; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 775 | if (*p != xdr_zero) |
| 776 | return decode_nfs_fh3(xdr, fh); |
| 777 | zero_nfs_fh3(fh); |
| 778 | return 0; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 779 | } |
| 780 | |
| 781 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 782 | * diropargs3 |
| 783 | * |
| 784 | * struct diropargs3 { |
| 785 | * nfs_fh3 dir; |
| 786 | * filename3 name; |
| 787 | * }; |
| 788 | */ |
| 789 | static void encode_diropargs3(struct xdr_stream *xdr, const struct nfs_fh *fh, |
| 790 | const char *name, u32 length) |
| 791 | { |
| 792 | encode_nfs_fh3(xdr, fh); |
| 793 | encode_filename3(xdr, name, length); |
| 794 | } |
| 795 | |
| 796 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 797 | /* |
Chuck Lever | 499ff71 | 2010-12-14 14:56:10 +0000 | [diff] [blame] | 798 | * NFSv3 XDR encode functions |
| 799 | * |
| 800 | * NFSv3 argument types are defined in section 3.3 of RFC 1813: |
| 801 | * "NFS Version 3 Protocol Specification". |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 802 | */ |
| 803 | |
| 804 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 805 | * 3.3.1 GETATTR3args |
| 806 | * |
| 807 | * struct GETATTR3args { |
| 808 | * nfs_fh3 object; |
| 809 | * }; |
| 810 | */ |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 811 | static void nfs3_xdr_enc_getattr3args(struct rpc_rqst *req, |
| 812 | struct xdr_stream *xdr, |
Christoph Hellwig | fcc8581 | 2017-05-08 10:01:49 +0200 | [diff] [blame] | 813 | const void *data) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 814 | { |
Christoph Hellwig | fcc8581 | 2017-05-08 10:01:49 +0200 | [diff] [blame] | 815 | const struct nfs_fh *fh = data; |
| 816 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 817 | encode_nfs_fh3(xdr, fh); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 818 | } |
| 819 | |
| 820 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 821 | * 3.3.2 SETATTR3args |
| 822 | * |
| 823 | * union sattrguard3 switch (bool check) { |
| 824 | * case TRUE: |
| 825 | * nfstime3 obj_ctime; |
| 826 | * case FALSE: |
| 827 | * void; |
| 828 | * }; |
| 829 | * |
| 830 | * struct SETATTR3args { |
| 831 | * nfs_fh3 object; |
| 832 | * sattr3 new_attributes; |
| 833 | * sattrguard3 guard; |
| 834 | * }; |
| 835 | */ |
| 836 | static void encode_sattrguard3(struct xdr_stream *xdr, |
| 837 | const struct nfs3_sattrargs *args) |
| 838 | { |
| 839 | __be32 *p; |
| 840 | |
| 841 | if (args->guard) { |
| 842 | p = xdr_reserve_space(xdr, 4 + 8); |
| 843 | *p++ = xdr_one; |
Chuck Lever | 9d5a643 | 2010-12-14 14:56:20 +0000 | [diff] [blame] | 844 | xdr_encode_nfstime3(p, &args->guardtime); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 845 | } else { |
| 846 | p = xdr_reserve_space(xdr, 4); |
| 847 | *p = xdr_zero; |
| 848 | } |
| 849 | } |
| 850 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 851 | static void nfs3_xdr_enc_setattr3args(struct rpc_rqst *req, |
| 852 | struct xdr_stream *xdr, |
Christoph Hellwig | fcc8581 | 2017-05-08 10:01:49 +0200 | [diff] [blame] | 853 | const void *data) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 854 | { |
Christoph Hellwig | fcc8581 | 2017-05-08 10:01:49 +0200 | [diff] [blame] | 855 | const struct nfs3_sattrargs *args = data; |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 856 | encode_nfs_fh3(xdr, args->fh); |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 857 | encode_sattr3(xdr, args->sattr, rpc_rqst_userns(req)); |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 858 | encode_sattrguard3(xdr, args); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 859 | } |
| 860 | |
| 861 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 862 | * 3.3.3 LOOKUP3args |
| 863 | * |
| 864 | * struct LOOKUP3args { |
| 865 | * diropargs3 what; |
| 866 | * }; |
| 867 | */ |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 868 | static void nfs3_xdr_enc_lookup3args(struct rpc_rqst *req, |
| 869 | struct xdr_stream *xdr, |
Christoph Hellwig | fcc8581 | 2017-05-08 10:01:49 +0200 | [diff] [blame] | 870 | const void *data) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 871 | { |
Christoph Hellwig | fcc8581 | 2017-05-08 10:01:49 +0200 | [diff] [blame] | 872 | const struct nfs3_diropargs *args = data; |
| 873 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 874 | encode_diropargs3(xdr, args->fh, args->name, args->len); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 875 | } |
| 876 | |
| 877 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 878 | * 3.3.4 ACCESS3args |
| 879 | * |
| 880 | * struct ACCESS3args { |
| 881 | * nfs_fh3 object; |
| 882 | * uint32 access; |
| 883 | * }; |
| 884 | */ |
| 885 | static void encode_access3args(struct xdr_stream *xdr, |
| 886 | const struct nfs3_accessargs *args) |
| 887 | { |
| 888 | encode_nfs_fh3(xdr, args->fh); |
| 889 | encode_uint32(xdr, args->access); |
| 890 | } |
| 891 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 892 | static void nfs3_xdr_enc_access3args(struct rpc_rqst *req, |
| 893 | struct xdr_stream *xdr, |
Christoph Hellwig | fcc8581 | 2017-05-08 10:01:49 +0200 | [diff] [blame] | 894 | const void *data) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 895 | { |
Christoph Hellwig | fcc8581 | 2017-05-08 10:01:49 +0200 | [diff] [blame] | 896 | const struct nfs3_accessargs *args = data; |
| 897 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 898 | encode_access3args(xdr, args); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 899 | } |
| 900 | |
| 901 | /* |
| 902 | * 3.3.5 READLINK3args |
| 903 | * |
| 904 | * struct READLINK3args { |
| 905 | * nfs_fh3 symlink; |
| 906 | * }; |
| 907 | */ |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 908 | static void nfs3_xdr_enc_readlink3args(struct rpc_rqst *req, |
| 909 | struct xdr_stream *xdr, |
Christoph Hellwig | fcc8581 | 2017-05-08 10:01:49 +0200 | [diff] [blame] | 910 | const void *data) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 911 | { |
Christoph Hellwig | fcc8581 | 2017-05-08 10:01:49 +0200 | [diff] [blame] | 912 | const struct nfs3_readlinkargs *args = data; |
| 913 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 914 | encode_nfs_fh3(xdr, args->fh); |
Trond Myklebust | 9ed5af26 | 2020-11-21 20:46:18 -0500 | [diff] [blame] | 915 | rpc_prepare_reply_pages(req, args->pages, args->pgbase, args->pglen, |
| 916 | NFS3_readlinkres_sz - NFS3_pagepad_sz); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 917 | } |
| 918 | |
| 919 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 920 | * 3.3.6 READ3args |
| 921 | * |
| 922 | * struct READ3args { |
| 923 | * nfs_fh3 file; |
| 924 | * offset3 offset; |
| 925 | * count3 count; |
| 926 | * }; |
| 927 | */ |
| 928 | static void encode_read3args(struct xdr_stream *xdr, |
Anna Schumaker | 3c6b899 | 2014-05-06 09:12:24 -0400 | [diff] [blame] | 929 | const struct nfs_pgio_args *args) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 930 | { |
| 931 | __be32 *p; |
| 932 | |
| 933 | encode_nfs_fh3(xdr, args->fh); |
| 934 | |
| 935 | p = xdr_reserve_space(xdr, 8 + 4); |
| 936 | p = xdr_encode_hyper(p, args->offset); |
| 937 | *p = cpu_to_be32(args->count); |
| 938 | } |
| 939 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 940 | static void nfs3_xdr_enc_read3args(struct rpc_rqst *req, |
| 941 | struct xdr_stream *xdr, |
Christoph Hellwig | fcc8581 | 2017-05-08 10:01:49 +0200 | [diff] [blame] | 942 | const void *data) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 943 | { |
Christoph Hellwig | fcc8581 | 2017-05-08 10:01:49 +0200 | [diff] [blame] | 944 | const struct nfs_pgio_args *args = data; |
Trond Myklebust | 9ed5af26 | 2020-11-21 20:46:18 -0500 | [diff] [blame] | 945 | unsigned int replen = args->replen ? args->replen : |
| 946 | NFS3_readres_sz - NFS3_pagepad_sz; |
Christoph Hellwig | fcc8581 | 2017-05-08 10:01:49 +0200 | [diff] [blame] | 947 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 948 | encode_read3args(xdr, args); |
Chuck Lever | cf500ba | 2019-02-11 11:25:20 -0500 | [diff] [blame] | 949 | rpc_prepare_reply_pages(req, args->pages, args->pgbase, |
| 950 | args->count, replen); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 951 | req->rq_rcv_buf.flags |= XDRBUF_READ; |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 952 | } |
| 953 | |
| 954 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 955 | * 3.3.7 WRITE3args |
| 956 | * |
| 957 | * enum stable_how { |
| 958 | * UNSTABLE = 0, |
| 959 | * DATA_SYNC = 1, |
| 960 | * FILE_SYNC = 2 |
| 961 | * }; |
| 962 | * |
| 963 | * struct WRITE3args { |
| 964 | * nfs_fh3 file; |
| 965 | * offset3 offset; |
| 966 | * count3 count; |
| 967 | * stable_how stable; |
| 968 | * opaque data<>; |
| 969 | * }; |
| 970 | */ |
| 971 | static void encode_write3args(struct xdr_stream *xdr, |
Anna Schumaker | 3c6b899 | 2014-05-06 09:12:24 -0400 | [diff] [blame] | 972 | const struct nfs_pgio_args *args) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 973 | { |
| 974 | __be32 *p; |
| 975 | |
| 976 | encode_nfs_fh3(xdr, args->fh); |
| 977 | |
| 978 | p = xdr_reserve_space(xdr, 8 + 4 + 4 + 4); |
| 979 | p = xdr_encode_hyper(p, args->offset); |
| 980 | *p++ = cpu_to_be32(args->count); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 981 | *p++ = cpu_to_be32(args->stable); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 982 | *p = cpu_to_be32(args->count); |
| 983 | xdr_write_pages(xdr, args->pages, args->pgbase, args->count); |
| 984 | } |
| 985 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 986 | static void nfs3_xdr_enc_write3args(struct rpc_rqst *req, |
| 987 | struct xdr_stream *xdr, |
Christoph Hellwig | fcc8581 | 2017-05-08 10:01:49 +0200 | [diff] [blame] | 988 | const void *data) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 989 | { |
Christoph Hellwig | fcc8581 | 2017-05-08 10:01:49 +0200 | [diff] [blame] | 990 | const struct nfs_pgio_args *args = data; |
| 991 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 992 | encode_write3args(xdr, args); |
| 993 | xdr->buf->flags |= XDRBUF_WRITE; |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 994 | } |
| 995 | |
| 996 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 997 | * 3.3.8 CREATE3args |
| 998 | * |
| 999 | * enum createmode3 { |
| 1000 | * UNCHECKED = 0, |
| 1001 | * GUARDED = 1, |
| 1002 | * EXCLUSIVE = 2 |
| 1003 | * }; |
| 1004 | * |
| 1005 | * union createhow3 switch (createmode3 mode) { |
| 1006 | * case UNCHECKED: |
| 1007 | * case GUARDED: |
| 1008 | * sattr3 obj_attributes; |
| 1009 | * case EXCLUSIVE: |
| 1010 | * createverf3 verf; |
| 1011 | * }; |
| 1012 | * |
| 1013 | * struct CREATE3args { |
| 1014 | * diropargs3 where; |
| 1015 | * createhow3 how; |
| 1016 | * }; |
| 1017 | */ |
| 1018 | static void encode_createhow3(struct xdr_stream *xdr, |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 1019 | const struct nfs3_createargs *args, |
| 1020 | struct user_namespace *userns) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1021 | { |
| 1022 | encode_uint32(xdr, args->createmode); |
| 1023 | switch (args->createmode) { |
| 1024 | case NFS3_CREATE_UNCHECKED: |
| 1025 | case NFS3_CREATE_GUARDED: |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 1026 | encode_sattr3(xdr, args->sattr, userns); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1027 | break; |
| 1028 | case NFS3_CREATE_EXCLUSIVE: |
| 1029 | encode_createverf3(xdr, args->verifier); |
| 1030 | break; |
| 1031 | default: |
| 1032 | BUG(); |
| 1033 | } |
| 1034 | } |
| 1035 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1036 | static void nfs3_xdr_enc_create3args(struct rpc_rqst *req, |
| 1037 | struct xdr_stream *xdr, |
Christoph Hellwig | fcc8581 | 2017-05-08 10:01:49 +0200 | [diff] [blame] | 1038 | const void *data) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1039 | { |
Christoph Hellwig | fcc8581 | 2017-05-08 10:01:49 +0200 | [diff] [blame] | 1040 | const struct nfs3_createargs *args = data; |
| 1041 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1042 | encode_diropargs3(xdr, args->fh, args->name, args->len); |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 1043 | encode_createhow3(xdr, args, rpc_rqst_userns(req)); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1044 | } |
| 1045 | |
| 1046 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1047 | * 3.3.9 MKDIR3args |
| 1048 | * |
| 1049 | * struct MKDIR3args { |
| 1050 | * diropargs3 where; |
| 1051 | * sattr3 attributes; |
| 1052 | * }; |
| 1053 | */ |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1054 | static void nfs3_xdr_enc_mkdir3args(struct rpc_rqst *req, |
| 1055 | struct xdr_stream *xdr, |
Christoph Hellwig | fcc8581 | 2017-05-08 10:01:49 +0200 | [diff] [blame] | 1056 | const void *data) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1057 | { |
Christoph Hellwig | fcc8581 | 2017-05-08 10:01:49 +0200 | [diff] [blame] | 1058 | const struct nfs3_mkdirargs *args = data; |
| 1059 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1060 | encode_diropargs3(xdr, args->fh, args->name, args->len); |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 1061 | encode_sattr3(xdr, args->sattr, rpc_rqst_userns(req)); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1062 | } |
| 1063 | |
| 1064 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1065 | * 3.3.10 SYMLINK3args |
| 1066 | * |
| 1067 | * struct symlinkdata3 { |
| 1068 | * sattr3 symlink_attributes; |
| 1069 | * nfspath3 symlink_data; |
| 1070 | * }; |
| 1071 | * |
| 1072 | * struct SYMLINK3args { |
| 1073 | * diropargs3 where; |
| 1074 | * symlinkdata3 symlink; |
| 1075 | * }; |
| 1076 | */ |
| 1077 | static void encode_symlinkdata3(struct xdr_stream *xdr, |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 1078 | const void *data, |
| 1079 | struct user_namespace *userns) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1080 | { |
Christoph Hellwig | fcc8581 | 2017-05-08 10:01:49 +0200 | [diff] [blame] | 1081 | const struct nfs3_symlinkargs *args = data; |
| 1082 | |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 1083 | encode_sattr3(xdr, args->sattr, userns); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1084 | encode_nfspath3(xdr, args->pages, args->pathlen); |
| 1085 | } |
| 1086 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1087 | static void nfs3_xdr_enc_symlink3args(struct rpc_rqst *req, |
| 1088 | struct xdr_stream *xdr, |
Christoph Hellwig | fcc8581 | 2017-05-08 10:01:49 +0200 | [diff] [blame] | 1089 | const void *data) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1090 | { |
Christoph Hellwig | fcc8581 | 2017-05-08 10:01:49 +0200 | [diff] [blame] | 1091 | const struct nfs3_symlinkargs *args = data; |
| 1092 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1093 | encode_diropargs3(xdr, args->fromfh, args->fromname, args->fromlen); |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 1094 | encode_symlinkdata3(xdr, args, rpc_rqst_userns(req)); |
Chuck Lever | 2fcc213 | 2015-08-03 13:04:26 -0400 | [diff] [blame] | 1095 | xdr->buf->flags |= XDRBUF_WRITE; |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1096 | } |
| 1097 | |
| 1098 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1099 | * 3.3.11 MKNOD3args |
| 1100 | * |
| 1101 | * struct devicedata3 { |
| 1102 | * sattr3 dev_attributes; |
| 1103 | * specdata3 spec; |
| 1104 | * }; |
| 1105 | * |
| 1106 | * union mknoddata3 switch (ftype3 type) { |
| 1107 | * case NF3CHR: |
| 1108 | * case NF3BLK: |
| 1109 | * devicedata3 device; |
| 1110 | * case NF3SOCK: |
| 1111 | * case NF3FIFO: |
| 1112 | * sattr3 pipe_attributes; |
| 1113 | * default: |
| 1114 | * void; |
| 1115 | * }; |
| 1116 | * |
| 1117 | * struct MKNOD3args { |
| 1118 | * diropargs3 where; |
| 1119 | * mknoddata3 what; |
| 1120 | * }; |
| 1121 | */ |
| 1122 | static void encode_devicedata3(struct xdr_stream *xdr, |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 1123 | const struct nfs3_mknodargs *args, |
| 1124 | struct user_namespace *userns) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1125 | { |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 1126 | encode_sattr3(xdr, args->sattr, userns); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1127 | encode_specdata3(xdr, args->rdev); |
| 1128 | } |
| 1129 | |
| 1130 | static void encode_mknoddata3(struct xdr_stream *xdr, |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 1131 | const struct nfs3_mknodargs *args, |
| 1132 | struct user_namespace *userns) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1133 | { |
| 1134 | encode_ftype3(xdr, args->type); |
| 1135 | switch (args->type) { |
| 1136 | case NF3CHR: |
| 1137 | case NF3BLK: |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 1138 | encode_devicedata3(xdr, args, userns); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1139 | break; |
| 1140 | case NF3SOCK: |
| 1141 | case NF3FIFO: |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 1142 | encode_sattr3(xdr, args->sattr, userns); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1143 | break; |
| 1144 | case NF3REG: |
| 1145 | case NF3DIR: |
| 1146 | break; |
| 1147 | default: |
| 1148 | BUG(); |
| 1149 | } |
| 1150 | } |
| 1151 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1152 | static void nfs3_xdr_enc_mknod3args(struct rpc_rqst *req, |
| 1153 | struct xdr_stream *xdr, |
Christoph Hellwig | fcc8581 | 2017-05-08 10:01:49 +0200 | [diff] [blame] | 1154 | const void *data) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1155 | { |
Christoph Hellwig | fcc8581 | 2017-05-08 10:01:49 +0200 | [diff] [blame] | 1156 | const struct nfs3_mknodargs *args = data; |
| 1157 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1158 | encode_diropargs3(xdr, args->fh, args->name, args->len); |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 1159 | encode_mknoddata3(xdr, args, rpc_rqst_userns(req)); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1160 | } |
| 1161 | |
| 1162 | /* |
| 1163 | * 3.3.12 REMOVE3args |
| 1164 | * |
| 1165 | * struct REMOVE3args { |
| 1166 | * diropargs3 object; |
| 1167 | * }; |
| 1168 | */ |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1169 | static void nfs3_xdr_enc_remove3args(struct rpc_rqst *req, |
| 1170 | struct xdr_stream *xdr, |
Christoph Hellwig | fcc8581 | 2017-05-08 10:01:49 +0200 | [diff] [blame] | 1171 | const void *data) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1172 | { |
Christoph Hellwig | fcc8581 | 2017-05-08 10:01:49 +0200 | [diff] [blame] | 1173 | const struct nfs_removeargs *args = data; |
| 1174 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1175 | encode_diropargs3(xdr, args->fh, args->name.name, args->name.len); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1176 | } |
| 1177 | |
| 1178 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1179 | * 3.3.14 RENAME3args |
| 1180 | * |
| 1181 | * struct RENAME3args { |
| 1182 | * diropargs3 from; |
| 1183 | * diropargs3 to; |
| 1184 | * }; |
| 1185 | */ |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1186 | static void nfs3_xdr_enc_rename3args(struct rpc_rqst *req, |
| 1187 | struct xdr_stream *xdr, |
Christoph Hellwig | fcc8581 | 2017-05-08 10:01:49 +0200 | [diff] [blame] | 1188 | const void *data) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1189 | { |
Christoph Hellwig | fcc8581 | 2017-05-08 10:01:49 +0200 | [diff] [blame] | 1190 | const struct nfs_renameargs *args = data; |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1191 | const struct qstr *old = args->old_name; |
| 1192 | const struct qstr *new = args->new_name; |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1193 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1194 | encode_diropargs3(xdr, args->old_dir, old->name, old->len); |
| 1195 | encode_diropargs3(xdr, args->new_dir, new->name, new->len); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1196 | } |
| 1197 | |
| 1198 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1199 | * 3.3.15 LINK3args |
| 1200 | * |
| 1201 | * struct LINK3args { |
| 1202 | * nfs_fh3 file; |
| 1203 | * diropargs3 link; |
| 1204 | * }; |
| 1205 | */ |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1206 | static void nfs3_xdr_enc_link3args(struct rpc_rqst *req, |
| 1207 | struct xdr_stream *xdr, |
Christoph Hellwig | fcc8581 | 2017-05-08 10:01:49 +0200 | [diff] [blame] | 1208 | const void *data) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1209 | { |
Christoph Hellwig | fcc8581 | 2017-05-08 10:01:49 +0200 | [diff] [blame] | 1210 | const struct nfs3_linkargs *args = data; |
| 1211 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1212 | encode_nfs_fh3(xdr, args->fromfh); |
| 1213 | encode_diropargs3(xdr, args->tofh, args->toname, args->tolen); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1214 | } |
| 1215 | |
| 1216 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1217 | * 3.3.16 READDIR3args |
| 1218 | * |
| 1219 | * struct READDIR3args { |
| 1220 | * nfs_fh3 dir; |
| 1221 | * cookie3 cookie; |
| 1222 | * cookieverf3 cookieverf; |
| 1223 | * count3 count; |
| 1224 | * }; |
| 1225 | */ |
| 1226 | static void encode_readdir3args(struct xdr_stream *xdr, |
| 1227 | const struct nfs3_readdirargs *args) |
| 1228 | { |
| 1229 | __be32 *p; |
| 1230 | |
| 1231 | encode_nfs_fh3(xdr, args->fh); |
| 1232 | |
| 1233 | p = xdr_reserve_space(xdr, 8 + NFS3_COOKIEVERFSIZE + 4); |
| 1234 | p = xdr_encode_cookie3(p, args->cookie); |
| 1235 | p = xdr_encode_cookieverf3(p, args->verf); |
| 1236 | *p = cpu_to_be32(args->count); |
| 1237 | } |
| 1238 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1239 | static void nfs3_xdr_enc_readdir3args(struct rpc_rqst *req, |
| 1240 | struct xdr_stream *xdr, |
Christoph Hellwig | fcc8581 | 2017-05-08 10:01:49 +0200 | [diff] [blame] | 1241 | const void *data) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1242 | { |
Christoph Hellwig | fcc8581 | 2017-05-08 10:01:49 +0200 | [diff] [blame] | 1243 | const struct nfs3_readdirargs *args = data; |
| 1244 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1245 | encode_readdir3args(xdr, args); |
Trond Myklebust | 9ed5af26 | 2020-11-21 20:46:18 -0500 | [diff] [blame] | 1246 | rpc_prepare_reply_pages(req, args->pages, 0, args->count, |
| 1247 | NFS3_readdirres_sz - NFS3_pagepad_sz); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1248 | } |
| 1249 | |
| 1250 | /* |
| 1251 | * 3.3.17 READDIRPLUS3args |
| 1252 | * |
| 1253 | * struct READDIRPLUS3args { |
| 1254 | * nfs_fh3 dir; |
| 1255 | * cookie3 cookie; |
| 1256 | * cookieverf3 cookieverf; |
| 1257 | * count3 dircount; |
| 1258 | * count3 maxcount; |
| 1259 | * }; |
| 1260 | */ |
| 1261 | static void encode_readdirplus3args(struct xdr_stream *xdr, |
| 1262 | const struct nfs3_readdirargs *args) |
| 1263 | { |
Trond Myklebust | c49c6894 | 2022-02-18 12:04:06 -0500 | [diff] [blame] | 1264 | uint32_t dircount = args->count; |
| 1265 | uint32_t maxcount = args->count; |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1266 | __be32 *p; |
| 1267 | |
| 1268 | encode_nfs_fh3(xdr, args->fh); |
| 1269 | |
| 1270 | p = xdr_reserve_space(xdr, 8 + NFS3_COOKIEVERFSIZE + 4 + 4); |
| 1271 | p = xdr_encode_cookie3(p, args->cookie); |
| 1272 | p = xdr_encode_cookieverf3(p, args->verf); |
| 1273 | |
| 1274 | /* |
| 1275 | * readdirplus: need dircount + buffer size. |
| 1276 | * We just make sure we make dircount big enough |
| 1277 | */ |
Trond Myklebust | c49c6894 | 2022-02-18 12:04:06 -0500 | [diff] [blame] | 1278 | *p++ = cpu_to_be32(dircount); |
| 1279 | *p = cpu_to_be32(maxcount); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1280 | } |
| 1281 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1282 | static void nfs3_xdr_enc_readdirplus3args(struct rpc_rqst *req, |
| 1283 | struct xdr_stream *xdr, |
Christoph Hellwig | fcc8581 | 2017-05-08 10:01:49 +0200 | [diff] [blame] | 1284 | const void *data) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1285 | { |
Christoph Hellwig | fcc8581 | 2017-05-08 10:01:49 +0200 | [diff] [blame] | 1286 | const struct nfs3_readdirargs *args = data; |
| 1287 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1288 | encode_readdirplus3args(xdr, args); |
Trond Myklebust | 9ed5af26 | 2020-11-21 20:46:18 -0500 | [diff] [blame] | 1289 | rpc_prepare_reply_pages(req, args->pages, 0, args->count, |
| 1290 | NFS3_readdirres_sz - NFS3_pagepad_sz); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1291 | } |
| 1292 | |
| 1293 | /* |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1294 | * 3.3.21 COMMIT3args |
| 1295 | * |
| 1296 | * struct COMMIT3args { |
| 1297 | * nfs_fh3 file; |
| 1298 | * offset3 offset; |
| 1299 | * count3 count; |
| 1300 | * }; |
| 1301 | */ |
| 1302 | static void encode_commit3args(struct xdr_stream *xdr, |
Fred Isaman | 0b7c015 | 2012-04-20 14:47:39 -0400 | [diff] [blame] | 1303 | const struct nfs_commitargs *args) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1304 | { |
| 1305 | __be32 *p; |
| 1306 | |
| 1307 | encode_nfs_fh3(xdr, args->fh); |
| 1308 | |
| 1309 | p = xdr_reserve_space(xdr, 8 + 4); |
| 1310 | p = xdr_encode_hyper(p, args->offset); |
| 1311 | *p = cpu_to_be32(args->count); |
| 1312 | } |
| 1313 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1314 | static void nfs3_xdr_enc_commit3args(struct rpc_rqst *req, |
| 1315 | struct xdr_stream *xdr, |
Christoph Hellwig | fcc8581 | 2017-05-08 10:01:49 +0200 | [diff] [blame] | 1316 | const void *data) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1317 | { |
Christoph Hellwig | fcc8581 | 2017-05-08 10:01:49 +0200 | [diff] [blame] | 1318 | const struct nfs_commitargs *args = data; |
| 1319 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1320 | encode_commit3args(xdr, args); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1321 | } |
| 1322 | |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 1323 | #ifdef CONFIG_NFS_V3_ACL |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 1324 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1325 | static void nfs3_xdr_enc_getacl3args(struct rpc_rqst *req, |
| 1326 | struct xdr_stream *xdr, |
Christoph Hellwig | fcc8581 | 2017-05-08 10:01:49 +0200 | [diff] [blame] | 1327 | const void *data) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1328 | { |
Christoph Hellwig | fcc8581 | 2017-05-08 10:01:49 +0200 | [diff] [blame] | 1329 | const struct nfs3_getaclargs *args = data; |
| 1330 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1331 | encode_nfs_fh3(xdr, args->fh); |
| 1332 | encode_uint32(xdr, args->mask); |
Trond Myklebust | 431f6eb | 2018-09-16 00:08:20 -0400 | [diff] [blame] | 1333 | if (args->mask & (NFS_ACL | NFS_DFACL)) { |
Chuck Lever | cf500ba | 2019-02-11 11:25:20 -0500 | [diff] [blame] | 1334 | rpc_prepare_reply_pages(req, args->pages, 0, |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1335 | NFSACL_MAXPAGES << PAGE_SHIFT, |
Trond Myklebust | 9ed5af26 | 2020-11-21 20:46:18 -0500 | [diff] [blame] | 1336 | ACL3_getaclres_sz - NFS3_pagepad_sz); |
Trond Myklebust | 431f6eb | 2018-09-16 00:08:20 -0400 | [diff] [blame] | 1337 | req->rq_rcv_buf.flags |= XDRBUF_SPARSE_PAGES; |
| 1338 | } |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1339 | } |
| 1340 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1341 | static void nfs3_xdr_enc_setacl3args(struct rpc_rqst *req, |
| 1342 | struct xdr_stream *xdr, |
Christoph Hellwig | fcc8581 | 2017-05-08 10:01:49 +0200 | [diff] [blame] | 1343 | const void *data) |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1344 | { |
Christoph Hellwig | fcc8581 | 2017-05-08 10:01:49 +0200 | [diff] [blame] | 1345 | const struct nfs3_setaclargs *args = data; |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1346 | unsigned int base; |
| 1347 | int error; |
| 1348 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1349 | encode_nfs_fh3(xdr, NFS_FH(args->inode)); |
| 1350 | encode_uint32(xdr, args->mask); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1351 | |
| 1352 | base = req->rq_slen; |
Chuck Lever | ee5dc773 | 2011-01-21 03:05:18 +0000 | [diff] [blame] | 1353 | if (args->npages != 0) |
| 1354 | xdr_write_pages(xdr, args->pages, 0, args->len); |
| 1355 | else |
Chuck Lever | d683cc4 | 2015-05-26 11:53:52 -0400 | [diff] [blame] | 1356 | xdr_reserve_space(xdr, args->len); |
Chuck Lever | ee5dc773 | 2011-01-21 03:05:18 +0000 | [diff] [blame] | 1357 | |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1358 | error = nfsacl_encode(xdr->buf, base, args->inode, |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1359 | (args->mask & NFS_ACL) ? |
| 1360 | args->acl_access : NULL, 1, 0); |
Trond Myklebust | 7fc3884 | 2012-10-15 11:51:21 -0400 | [diff] [blame] | 1361 | /* FIXME: this is just broken */ |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1362 | BUG_ON(error < 0); |
Chuck Lever | 9f06c71 | 2010-12-14 14:59:18 +0000 | [diff] [blame] | 1363 | error = nfsacl_encode(xdr->buf, base + error, args->inode, |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1364 | (args->mask & NFS_DFACL) ? |
| 1365 | args->acl_default : NULL, 1, |
| 1366 | NFS_ACL_DEFAULT); |
| 1367 | BUG_ON(error < 0); |
Chuck Lever | d9c407b | 2010-12-14 14:55:50 +0000 | [diff] [blame] | 1368 | } |
| 1369 | |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 1370 | #endif /* CONFIG_NFS_V3_ACL */ |
| 1371 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1372 | /* |
Chuck Lever | b2cdd9c | 2010-12-14 14:56:52 +0000 | [diff] [blame] | 1373 | * NFSv3 XDR decode functions |
| 1374 | * |
| 1375 | * NFSv3 result types are defined in section 3.3 of RFC 1813: |
| 1376 | * "NFS Version 3 Protocol Specification". |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1377 | */ |
| 1378 | |
| 1379 | /* |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1380 | * 3.3.1 GETATTR3res |
| 1381 | * |
| 1382 | * struct GETATTR3resok { |
| 1383 | * fattr3 obj_attributes; |
| 1384 | * }; |
| 1385 | * |
| 1386 | * union GETATTR3res switch (nfsstat3 status) { |
| 1387 | * case NFS3_OK: |
| 1388 | * GETATTR3resok resok; |
| 1389 | * default: |
| 1390 | * void; |
| 1391 | * }; |
| 1392 | */ |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1393 | static int nfs3_xdr_dec_getattr3res(struct rpc_rqst *req, |
| 1394 | struct xdr_stream *xdr, |
Christoph Hellwig | fc01648 | 2017-05-08 15:09:02 +0200 | [diff] [blame] | 1395 | void *result) |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1396 | { |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1397 | enum nfs_stat status; |
| 1398 | int error; |
| 1399 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1400 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1401 | if (unlikely(error)) |
| 1402 | goto out; |
| 1403 | if (status != NFS3_OK) |
| 1404 | goto out_default; |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 1405 | error = decode_fattr3(xdr, result, rpc_rqst_userns(req)); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1406 | out: |
| 1407 | return error; |
| 1408 | out_default: |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 1409 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1410 | } |
| 1411 | |
| 1412 | /* |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1413 | * 3.3.2 SETATTR3res |
| 1414 | * |
| 1415 | * struct SETATTR3resok { |
| 1416 | * wcc_data obj_wcc; |
| 1417 | * }; |
| 1418 | * |
| 1419 | * struct SETATTR3resfail { |
| 1420 | * wcc_data obj_wcc; |
| 1421 | * }; |
| 1422 | * |
| 1423 | * union SETATTR3res switch (nfsstat3 status) { |
| 1424 | * case NFS3_OK: |
| 1425 | * SETATTR3resok resok; |
| 1426 | * default: |
| 1427 | * SETATTR3resfail resfail; |
| 1428 | * }; |
| 1429 | */ |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1430 | static int nfs3_xdr_dec_setattr3res(struct rpc_rqst *req, |
| 1431 | struct xdr_stream *xdr, |
Christoph Hellwig | fc01648 | 2017-05-08 15:09:02 +0200 | [diff] [blame] | 1432 | void *result) |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1433 | { |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1434 | enum nfs_stat status; |
| 1435 | int error; |
| 1436 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1437 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1438 | if (unlikely(error)) |
| 1439 | goto out; |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 1440 | error = decode_wcc_data(xdr, result, rpc_rqst_userns(req)); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1441 | if (unlikely(error)) |
| 1442 | goto out; |
| 1443 | if (status != NFS3_OK) |
| 1444 | goto out_status; |
| 1445 | out: |
| 1446 | return error; |
| 1447 | out_status: |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 1448 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1449 | } |
| 1450 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1451 | /* |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1452 | * 3.3.3 LOOKUP3res |
| 1453 | * |
| 1454 | * struct LOOKUP3resok { |
| 1455 | * nfs_fh3 object; |
| 1456 | * post_op_attr obj_attributes; |
| 1457 | * post_op_attr dir_attributes; |
| 1458 | * }; |
| 1459 | * |
| 1460 | * struct LOOKUP3resfail { |
| 1461 | * post_op_attr dir_attributes; |
| 1462 | * }; |
| 1463 | * |
| 1464 | * union LOOKUP3res switch (nfsstat3 status) { |
| 1465 | * case NFS3_OK: |
| 1466 | * LOOKUP3resok resok; |
| 1467 | * default: |
| 1468 | * LOOKUP3resfail resfail; |
| 1469 | * }; |
| 1470 | */ |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1471 | static int nfs3_xdr_dec_lookup3res(struct rpc_rqst *req, |
| 1472 | struct xdr_stream *xdr, |
Christoph Hellwig | fc01648 | 2017-05-08 15:09:02 +0200 | [diff] [blame] | 1473 | void *data) |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1474 | { |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 1475 | struct user_namespace *userns = rpc_rqst_userns(req); |
Christoph Hellwig | fc01648 | 2017-05-08 15:09:02 +0200 | [diff] [blame] | 1476 | struct nfs3_diropres *result = data; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1477 | enum nfs_stat status; |
| 1478 | int error; |
| 1479 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1480 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1481 | if (unlikely(error)) |
| 1482 | goto out; |
| 1483 | if (status != NFS3_OK) |
| 1484 | goto out_default; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1485 | error = decode_nfs_fh3(xdr, result->fh); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1486 | if (unlikely(error)) |
| 1487 | goto out; |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 1488 | error = decode_post_op_attr(xdr, result->fattr, userns); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1489 | if (unlikely(error)) |
| 1490 | goto out; |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 1491 | error = decode_post_op_attr(xdr, result->dir_attr, userns); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1492 | out: |
| 1493 | return error; |
| 1494 | out_default: |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 1495 | error = decode_post_op_attr(xdr, result->dir_attr, userns); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1496 | if (unlikely(error)) |
| 1497 | goto out; |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 1498 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1499 | } |
| 1500 | |
| 1501 | /* |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1502 | * 3.3.4 ACCESS3res |
| 1503 | * |
| 1504 | * struct ACCESS3resok { |
| 1505 | * post_op_attr obj_attributes; |
| 1506 | * uint32 access; |
| 1507 | * }; |
| 1508 | * |
| 1509 | * struct ACCESS3resfail { |
| 1510 | * post_op_attr obj_attributes; |
| 1511 | * }; |
| 1512 | * |
| 1513 | * union ACCESS3res switch (nfsstat3 status) { |
| 1514 | * case NFS3_OK: |
| 1515 | * ACCESS3resok resok; |
| 1516 | * default: |
| 1517 | * ACCESS3resfail resfail; |
| 1518 | * }; |
| 1519 | */ |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1520 | static int nfs3_xdr_dec_access3res(struct rpc_rqst *req, |
| 1521 | struct xdr_stream *xdr, |
Christoph Hellwig | fc01648 | 2017-05-08 15:09:02 +0200 | [diff] [blame] | 1522 | void *data) |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1523 | { |
Christoph Hellwig | fc01648 | 2017-05-08 15:09:02 +0200 | [diff] [blame] | 1524 | struct nfs3_accessres *result = data; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1525 | enum nfs_stat status; |
| 1526 | int error; |
| 1527 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1528 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1529 | if (unlikely(error)) |
| 1530 | goto out; |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 1531 | error = decode_post_op_attr(xdr, result->fattr, rpc_rqst_userns(req)); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1532 | if (unlikely(error)) |
| 1533 | goto out; |
| 1534 | if (status != NFS3_OK) |
| 1535 | goto out_default; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1536 | error = decode_uint32(xdr, &result->access); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1537 | out: |
| 1538 | return error; |
| 1539 | out_default: |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 1540 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1541 | } |
| 1542 | |
| 1543 | /* |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1544 | * 3.3.5 READLINK3res |
| 1545 | * |
| 1546 | * struct READLINK3resok { |
| 1547 | * post_op_attr symlink_attributes; |
| 1548 | * nfspath3 data; |
| 1549 | * }; |
| 1550 | * |
| 1551 | * struct READLINK3resfail { |
| 1552 | * post_op_attr symlink_attributes; |
| 1553 | * }; |
| 1554 | * |
| 1555 | * union READLINK3res switch (nfsstat3 status) { |
| 1556 | * case NFS3_OK: |
| 1557 | * READLINK3resok resok; |
| 1558 | * default: |
| 1559 | * READLINK3resfail resfail; |
| 1560 | * }; |
| 1561 | */ |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1562 | static int nfs3_xdr_dec_readlink3res(struct rpc_rqst *req, |
| 1563 | struct xdr_stream *xdr, |
Christoph Hellwig | fc01648 | 2017-05-08 15:09:02 +0200 | [diff] [blame] | 1564 | void *result) |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1565 | { |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1566 | enum nfs_stat status; |
| 1567 | int error; |
| 1568 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1569 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1570 | if (unlikely(error)) |
| 1571 | goto out; |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 1572 | error = decode_post_op_attr(xdr, result, rpc_rqst_userns(req)); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1573 | if (unlikely(error)) |
| 1574 | goto out; |
| 1575 | if (status != NFS3_OK) |
| 1576 | goto out_default; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1577 | error = decode_nfspath3(xdr); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1578 | out: |
| 1579 | return error; |
| 1580 | out_default: |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 1581 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1582 | } |
| 1583 | |
| 1584 | /* |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1585 | * 3.3.6 READ3res |
| 1586 | * |
| 1587 | * struct READ3resok { |
| 1588 | * post_op_attr file_attributes; |
| 1589 | * count3 count; |
| 1590 | * bool eof; |
| 1591 | * opaque data<>; |
| 1592 | * }; |
| 1593 | * |
| 1594 | * struct READ3resfail { |
| 1595 | * post_op_attr file_attributes; |
| 1596 | * }; |
| 1597 | * |
| 1598 | * union READ3res switch (nfsstat3 status) { |
| 1599 | * case NFS3_OK: |
| 1600 | * READ3resok resok; |
| 1601 | * default: |
| 1602 | * READ3resfail resfail; |
| 1603 | * }; |
| 1604 | */ |
| 1605 | static int decode_read3resok(struct xdr_stream *xdr, |
Anna Schumaker | 9137bdf | 2014-05-06 09:12:25 -0400 | [diff] [blame] | 1606 | struct nfs_pgio_res *result) |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1607 | { |
| 1608 | u32 eof, count, ocount, recvd; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1609 | __be32 *p; |
| 1610 | |
| 1611 | p = xdr_inline_decode(xdr, 4 + 4 + 4); |
Chuck Lever | eb72f48 | 2019-02-11 11:24:21 -0500 | [diff] [blame] | 1612 | if (unlikely(!p)) |
| 1613 | return -EIO; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1614 | count = be32_to_cpup(p++); |
| 1615 | eof = be32_to_cpup(p++); |
| 1616 | ocount = be32_to_cpup(p++); |
| 1617 | if (unlikely(ocount != count)) |
| 1618 | goto out_mismatch; |
Trond Myklebust | 64bd577 | 2012-06-20 22:35:05 -0400 | [diff] [blame] | 1619 | recvd = xdr_read_pages(xdr, count); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1620 | if (unlikely(count > recvd)) |
| 1621 | goto out_cheating; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1622 | out: |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1623 | result->eof = eof; |
| 1624 | result->count = count; |
| 1625 | return count; |
| 1626 | out_mismatch: |
| 1627 | dprintk("NFS: READ count doesn't match length of opaque: " |
| 1628 | "count %u != ocount %u\n", count, ocount); |
| 1629 | return -EIO; |
| 1630 | out_cheating: |
| 1631 | dprintk("NFS: server cheating in read result: " |
| 1632 | "count %u > recvd %u\n", count, recvd); |
| 1633 | count = recvd; |
| 1634 | eof = 0; |
| 1635 | goto out; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1636 | } |
| 1637 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1638 | static int nfs3_xdr_dec_read3res(struct rpc_rqst *req, struct xdr_stream *xdr, |
Christoph Hellwig | fc01648 | 2017-05-08 15:09:02 +0200 | [diff] [blame] | 1639 | void *data) |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1640 | { |
Christoph Hellwig | fc01648 | 2017-05-08 15:09:02 +0200 | [diff] [blame] | 1641 | struct nfs_pgio_res *result = data; |
Trond Myklebust | 8d8928d | 2018-03-05 12:03:00 -0500 | [diff] [blame] | 1642 | unsigned int pos; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1643 | enum nfs_stat status; |
| 1644 | int error; |
| 1645 | |
Trond Myklebust | 8d8928d | 2018-03-05 12:03:00 -0500 | [diff] [blame] | 1646 | pos = xdr_stream_pos(xdr); |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1647 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1648 | if (unlikely(error)) |
| 1649 | goto out; |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 1650 | error = decode_post_op_attr(xdr, result->fattr, rpc_rqst_userns(req)); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1651 | if (unlikely(error)) |
| 1652 | goto out; |
Peng Tao | aabff4d | 2014-08-27 10:47:14 +0800 | [diff] [blame] | 1653 | result->op_status = status; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1654 | if (status != NFS3_OK) |
| 1655 | goto out_status; |
Trond Myklebust | 9ed5af26 | 2020-11-21 20:46:18 -0500 | [diff] [blame] | 1656 | result->replen = 3 + ((xdr_stream_pos(xdr) - pos) >> 2); |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1657 | error = decode_read3resok(xdr, result); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1658 | out: |
| 1659 | return error; |
| 1660 | out_status: |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 1661 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1662 | } |
| 1663 | |
| 1664 | /* |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1665 | * 3.3.7 WRITE3res |
| 1666 | * |
| 1667 | * enum stable_how { |
| 1668 | * UNSTABLE = 0, |
| 1669 | * DATA_SYNC = 1, |
| 1670 | * FILE_SYNC = 2 |
| 1671 | * }; |
| 1672 | * |
| 1673 | * struct WRITE3resok { |
| 1674 | * wcc_data file_wcc; |
| 1675 | * count3 count; |
| 1676 | * stable_how committed; |
| 1677 | * writeverf3 verf; |
| 1678 | * }; |
| 1679 | * |
| 1680 | * struct WRITE3resfail { |
| 1681 | * wcc_data file_wcc; |
| 1682 | * }; |
| 1683 | * |
| 1684 | * union WRITE3res switch (nfsstat3 status) { |
| 1685 | * case NFS3_OK: |
| 1686 | * WRITE3resok resok; |
| 1687 | * default: |
| 1688 | * WRITE3resfail resfail; |
| 1689 | * }; |
| 1690 | */ |
| 1691 | static int decode_write3resok(struct xdr_stream *xdr, |
Anna Schumaker | 9137bdf | 2014-05-06 09:12:25 -0400 | [diff] [blame] | 1692 | struct nfs_pgio_res *result) |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1693 | { |
| 1694 | __be32 *p; |
| 1695 | |
Trond Myklebust | 2f2c63b | 2012-06-08 11:56:09 -0400 | [diff] [blame] | 1696 | p = xdr_inline_decode(xdr, 4 + 4); |
Chuck Lever | eb72f48 | 2019-02-11 11:24:21 -0500 | [diff] [blame] | 1697 | if (unlikely(!p)) |
| 1698 | return -EIO; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1699 | result->count = be32_to_cpup(p++); |
| 1700 | result->verf->committed = be32_to_cpup(p++); |
| 1701 | if (unlikely(result->verf->committed > NFS_FILE_SYNC)) |
| 1702 | goto out_badvalue; |
Trond Myklebust | 2f2c63b | 2012-06-08 11:56:09 -0400 | [diff] [blame] | 1703 | if (decode_writeverf3(xdr, &result->verf->verifier)) |
Chuck Lever | eb72f48 | 2019-02-11 11:24:21 -0500 | [diff] [blame] | 1704 | return -EIO; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1705 | return result->count; |
| 1706 | out_badvalue: |
| 1707 | dprintk("NFS: bad stable_how value: %u\n", result->verf->committed); |
| 1708 | return -EIO; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1709 | } |
| 1710 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1711 | static int nfs3_xdr_dec_write3res(struct rpc_rqst *req, struct xdr_stream *xdr, |
Christoph Hellwig | fc01648 | 2017-05-08 15:09:02 +0200 | [diff] [blame] | 1712 | void *data) |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1713 | { |
Christoph Hellwig | fc01648 | 2017-05-08 15:09:02 +0200 | [diff] [blame] | 1714 | struct nfs_pgio_res *result = data; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1715 | enum nfs_stat status; |
| 1716 | int error; |
| 1717 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1718 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1719 | if (unlikely(error)) |
| 1720 | goto out; |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 1721 | error = decode_wcc_data(xdr, result->fattr, rpc_rqst_userns(req)); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1722 | if (unlikely(error)) |
| 1723 | goto out; |
Peng Tao | aabff4d | 2014-08-27 10:47:14 +0800 | [diff] [blame] | 1724 | result->op_status = status; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1725 | if (status != NFS3_OK) |
| 1726 | goto out_status; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1727 | error = decode_write3resok(xdr, result); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1728 | out: |
| 1729 | return error; |
| 1730 | out_status: |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 1731 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1732 | } |
| 1733 | |
| 1734 | /* |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1735 | * 3.3.8 CREATE3res |
| 1736 | * |
| 1737 | * struct CREATE3resok { |
| 1738 | * post_op_fh3 obj; |
| 1739 | * post_op_attr obj_attributes; |
| 1740 | * wcc_data dir_wcc; |
| 1741 | * }; |
| 1742 | * |
| 1743 | * struct CREATE3resfail { |
| 1744 | * wcc_data dir_wcc; |
| 1745 | * }; |
| 1746 | * |
| 1747 | * union CREATE3res switch (nfsstat3 status) { |
| 1748 | * case NFS3_OK: |
| 1749 | * CREATE3resok resok; |
| 1750 | * default: |
| 1751 | * CREATE3resfail resfail; |
| 1752 | * }; |
| 1753 | */ |
| 1754 | static int decode_create3resok(struct xdr_stream *xdr, |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 1755 | struct nfs3_diropres *result, |
| 1756 | struct user_namespace *userns) |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1757 | { |
| 1758 | int error; |
| 1759 | |
| 1760 | error = decode_post_op_fh3(xdr, result->fh); |
| 1761 | if (unlikely(error)) |
| 1762 | goto out; |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 1763 | error = decode_post_op_attr(xdr, result->fattr, userns); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1764 | if (unlikely(error)) |
| 1765 | goto out; |
| 1766 | /* The server isn't required to return a file handle. |
| 1767 | * If it didn't, force the client to perform a LOOKUP |
| 1768 | * to determine the correct file handle and attribute |
| 1769 | * values for the new object. */ |
| 1770 | if (result->fh->size == 0) |
| 1771 | result->fattr->valid = 0; |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 1772 | error = decode_wcc_data(xdr, result->dir_attr, userns); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1773 | out: |
| 1774 | return error; |
| 1775 | } |
| 1776 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1777 | static int nfs3_xdr_dec_create3res(struct rpc_rqst *req, |
| 1778 | struct xdr_stream *xdr, |
Christoph Hellwig | fc01648 | 2017-05-08 15:09:02 +0200 | [diff] [blame] | 1779 | void *data) |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1780 | { |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 1781 | struct user_namespace *userns = rpc_rqst_userns(req); |
Christoph Hellwig | fc01648 | 2017-05-08 15:09:02 +0200 | [diff] [blame] | 1782 | struct nfs3_diropres *result = data; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1783 | enum nfs_stat status; |
| 1784 | int error; |
| 1785 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1786 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1787 | if (unlikely(error)) |
| 1788 | goto out; |
| 1789 | if (status != NFS3_OK) |
| 1790 | goto out_default; |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 1791 | error = decode_create3resok(xdr, result, userns); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1792 | out: |
| 1793 | return error; |
| 1794 | out_default: |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 1795 | error = decode_wcc_data(xdr, result->dir_attr, userns); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1796 | if (unlikely(error)) |
| 1797 | goto out; |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 1798 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1799 | } |
| 1800 | |
| 1801 | /* |
| 1802 | * 3.3.12 REMOVE3res |
| 1803 | * |
| 1804 | * struct REMOVE3resok { |
| 1805 | * wcc_data dir_wcc; |
| 1806 | * }; |
| 1807 | * |
| 1808 | * struct REMOVE3resfail { |
| 1809 | * wcc_data dir_wcc; |
| 1810 | * }; |
| 1811 | * |
| 1812 | * union REMOVE3res switch (nfsstat3 status) { |
| 1813 | * case NFS3_OK: |
| 1814 | * REMOVE3resok resok; |
| 1815 | * default: |
| 1816 | * REMOVE3resfail resfail; |
| 1817 | * }; |
| 1818 | */ |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1819 | static int nfs3_xdr_dec_remove3res(struct rpc_rqst *req, |
| 1820 | struct xdr_stream *xdr, |
Christoph Hellwig | fc01648 | 2017-05-08 15:09:02 +0200 | [diff] [blame] | 1821 | void *data) |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1822 | { |
Christoph Hellwig | fc01648 | 2017-05-08 15:09:02 +0200 | [diff] [blame] | 1823 | struct nfs_removeres *result = data; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1824 | enum nfs_stat status; |
| 1825 | int error; |
| 1826 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1827 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1828 | if (unlikely(error)) |
| 1829 | goto out; |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 1830 | error = decode_wcc_data(xdr, result->dir_attr, rpc_rqst_userns(req)); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1831 | if (unlikely(error)) |
| 1832 | goto out; |
| 1833 | if (status != NFS3_OK) |
| 1834 | goto out_status; |
| 1835 | out: |
| 1836 | return error; |
| 1837 | out_status: |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 1838 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1839 | } |
| 1840 | |
| 1841 | /* |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1842 | * 3.3.14 RENAME3res |
| 1843 | * |
| 1844 | * struct RENAME3resok { |
| 1845 | * wcc_data fromdir_wcc; |
| 1846 | * wcc_data todir_wcc; |
| 1847 | * }; |
| 1848 | * |
| 1849 | * struct RENAME3resfail { |
| 1850 | * wcc_data fromdir_wcc; |
| 1851 | * wcc_data todir_wcc; |
| 1852 | * }; |
| 1853 | * |
| 1854 | * union RENAME3res switch (nfsstat3 status) { |
| 1855 | * case NFS3_OK: |
| 1856 | * RENAME3resok resok; |
| 1857 | * default: |
| 1858 | * RENAME3resfail resfail; |
| 1859 | * }; |
| 1860 | */ |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1861 | static int nfs3_xdr_dec_rename3res(struct rpc_rqst *req, |
| 1862 | struct xdr_stream *xdr, |
Christoph Hellwig | fc01648 | 2017-05-08 15:09:02 +0200 | [diff] [blame] | 1863 | void *data) |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1864 | { |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 1865 | struct user_namespace *userns = rpc_rqst_userns(req); |
Christoph Hellwig | fc01648 | 2017-05-08 15:09:02 +0200 | [diff] [blame] | 1866 | struct nfs_renameres *result = data; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1867 | enum nfs_stat status; |
| 1868 | int error; |
| 1869 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1870 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1871 | if (unlikely(error)) |
| 1872 | goto out; |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 1873 | error = decode_wcc_data(xdr, result->old_fattr, userns); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1874 | if (unlikely(error)) |
| 1875 | goto out; |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 1876 | error = decode_wcc_data(xdr, result->new_fattr, userns); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1877 | if (unlikely(error)) |
| 1878 | goto out; |
| 1879 | if (status != NFS3_OK) |
| 1880 | goto out_status; |
| 1881 | out: |
| 1882 | return error; |
| 1883 | out_status: |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 1884 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1885 | } |
| 1886 | |
| 1887 | /* |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1888 | * 3.3.15 LINK3res |
| 1889 | * |
| 1890 | * struct LINK3resok { |
| 1891 | * post_op_attr file_attributes; |
| 1892 | * wcc_data linkdir_wcc; |
| 1893 | * }; |
| 1894 | * |
| 1895 | * struct LINK3resfail { |
| 1896 | * post_op_attr file_attributes; |
| 1897 | * wcc_data linkdir_wcc; |
| 1898 | * }; |
| 1899 | * |
| 1900 | * union LINK3res switch (nfsstat3 status) { |
| 1901 | * case NFS3_OK: |
| 1902 | * LINK3resok resok; |
| 1903 | * default: |
| 1904 | * LINK3resfail resfail; |
| 1905 | * }; |
| 1906 | */ |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1907 | static int nfs3_xdr_dec_link3res(struct rpc_rqst *req, struct xdr_stream *xdr, |
Christoph Hellwig | fc01648 | 2017-05-08 15:09:02 +0200 | [diff] [blame] | 1908 | void *data) |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1909 | { |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 1910 | struct user_namespace *userns = rpc_rqst_userns(req); |
Christoph Hellwig | fc01648 | 2017-05-08 15:09:02 +0200 | [diff] [blame] | 1911 | struct nfs3_linkres *result = data; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1912 | enum nfs_stat status; |
| 1913 | int error; |
| 1914 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 1915 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1916 | if (unlikely(error)) |
| 1917 | goto out; |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 1918 | error = decode_post_op_attr(xdr, result->fattr, userns); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1919 | if (unlikely(error)) |
| 1920 | goto out; |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 1921 | error = decode_wcc_data(xdr, result->dir_attr, userns); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1922 | if (unlikely(error)) |
| 1923 | goto out; |
| 1924 | if (status != NFS3_OK) |
| 1925 | goto out_status; |
| 1926 | out: |
| 1927 | return error; |
| 1928 | out_status: |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 1929 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1930 | } |
| 1931 | |
| 1932 | /** |
| 1933 | * nfs3_decode_dirent - Decode a single NFSv3 directory entry stored in |
| 1934 | * the local page cache |
| 1935 | * @xdr: XDR stream where entry resides |
| 1936 | * @entry: buffer to fill in with entry data |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1937 | * @plus: boolean indicating whether this should be a readdirplus entry |
| 1938 | * |
Chuck Lever | 573c4e1 | 2010-12-14 14:58:11 +0000 | [diff] [blame] | 1939 | * Returns zero if successful, otherwise a negative errno value is |
| 1940 | * returned. |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1941 | * |
| 1942 | * This function is not invoked during READDIR reply decoding, but |
| 1943 | * rather whenever an application invokes the getdents(2) system call |
| 1944 | * on a directory already in our cache. |
| 1945 | * |
| 1946 | * 3.3.16 entry3 |
| 1947 | * |
| 1948 | * struct entry3 { |
| 1949 | * fileid3 fileid; |
| 1950 | * filename3 name; |
| 1951 | * cookie3 cookie; |
| 1952 | * fhandle3 filehandle; |
| 1953 | * post_op_attr3 attributes; |
| 1954 | * entry3 *nextentry; |
| 1955 | * }; |
| 1956 | * |
| 1957 | * 3.3.17 entryplus3 |
| 1958 | * struct entryplus3 { |
| 1959 | * fileid3 fileid; |
| 1960 | * filename3 name; |
| 1961 | * cookie3 cookie; |
| 1962 | * post_op_attr name_attributes; |
| 1963 | * post_op_fh3 name_handle; |
| 1964 | * entryplus3 *nextentry; |
| 1965 | * }; |
| 1966 | */ |
Chuck Lever | 573c4e1 | 2010-12-14 14:58:11 +0000 | [diff] [blame] | 1967 | int nfs3_decode_dirent(struct xdr_stream *xdr, struct nfs_entry *entry, |
Benjamin Coddington | a7a3b1e | 2017-06-20 08:33:44 -0400 | [diff] [blame] | 1968 | bool plus) |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1969 | { |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 1970 | struct user_namespace *userns = rpc_userns(entry->server->client); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1971 | __be32 *p; |
| 1972 | int error; |
Frank Sorenson | 98de9ce | 2018-04-02 16:12:45 -0500 | [diff] [blame] | 1973 | u64 new_cookie; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1974 | |
| 1975 | p = xdr_inline_decode(xdr, 4); |
Chuck Lever | eb72f48 | 2019-02-11 11:24:21 -0500 | [diff] [blame] | 1976 | if (unlikely(!p)) |
| 1977 | return -EAGAIN; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1978 | if (*p == xdr_zero) { |
| 1979 | p = xdr_inline_decode(xdr, 4); |
Chuck Lever | eb72f48 | 2019-02-11 11:24:21 -0500 | [diff] [blame] | 1980 | if (unlikely(!p)) |
| 1981 | return -EAGAIN; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1982 | if (*p == xdr_zero) |
Chuck Lever | 573c4e1 | 2010-12-14 14:58:11 +0000 | [diff] [blame] | 1983 | return -EAGAIN; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1984 | entry->eof = 1; |
Chuck Lever | 573c4e1 | 2010-12-14 14:58:11 +0000 | [diff] [blame] | 1985 | return -EBADCOOKIE; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1986 | } |
| 1987 | |
| 1988 | error = decode_fileid3(xdr, &entry->ino); |
| 1989 | if (unlikely(error)) |
Trond Myklebust | 64cfca8 | 2022-02-24 10:59:37 -0500 | [diff] [blame] | 1990 | return -EAGAIN; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1991 | |
| 1992 | error = decode_inline_filename3(xdr, &entry->name, &entry->len); |
| 1993 | if (unlikely(error)) |
Benjamin Coddington | f67b55b | 2023-08-22 14:22:38 -0400 | [diff] [blame] | 1994 | return error == -ENAMETOOLONG ? -ENAMETOOLONG : -EAGAIN; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1995 | |
Frank Sorenson | 98de9ce | 2018-04-02 16:12:45 -0500 | [diff] [blame] | 1996 | error = decode_cookie3(xdr, &new_cookie); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1997 | if (unlikely(error)) |
Trond Myklebust | 64cfca8 | 2022-02-24 10:59:37 -0500 | [diff] [blame] | 1998 | return -EAGAIN; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 1999 | |
| 2000 | entry->d_type = DT_UNKNOWN; |
| 2001 | |
| 2002 | if (plus) { |
| 2003 | entry->fattr->valid = 0; |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 2004 | error = decode_post_op_attr(xdr, entry->fattr, userns); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2005 | if (unlikely(error)) |
Trond Myklebust | 64cfca8 | 2022-02-24 10:59:37 -0500 | [diff] [blame] | 2006 | return -EAGAIN; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2007 | if (entry->fattr->valid & NFS_ATTR_FATTR_V3) |
| 2008 | entry->d_type = nfs_umode_to_dtype(entry->fattr->mode); |
| 2009 | |
Trond Myklebust | 1ae04b2 | 2015-02-23 16:15:00 -0500 | [diff] [blame] | 2010 | if (entry->fattr->fileid != entry->ino) { |
| 2011 | entry->fattr->mounted_on_fileid = entry->ino; |
| 2012 | entry->fattr->valid |= NFS_ATTR_FATTR_MOUNTED_ON_FILEID; |
| 2013 | } |
| 2014 | |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2015 | /* In fact, a post_op_fh3: */ |
| 2016 | p = xdr_inline_decode(xdr, 4); |
Chuck Lever | eb72f48 | 2019-02-11 11:24:21 -0500 | [diff] [blame] | 2017 | if (unlikely(!p)) |
| 2018 | return -EAGAIN; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2019 | if (*p != xdr_zero) { |
| 2020 | error = decode_nfs_fh3(xdr, entry->fh); |
Trond Myklebust | 64cfca8 | 2022-02-24 10:59:37 -0500 | [diff] [blame] | 2021 | if (unlikely(error)) |
| 2022 | return -EAGAIN; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2023 | } else |
| 2024 | zero_nfs_fh3(entry->fh); |
| 2025 | } |
| 2026 | |
Frank Sorenson | 98de9ce | 2018-04-02 16:12:45 -0500 | [diff] [blame] | 2027 | entry->cookie = new_cookie; |
| 2028 | |
Chuck Lever | 573c4e1 | 2010-12-14 14:58:11 +0000 | [diff] [blame] | 2029 | return 0; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2030 | } |
| 2031 | |
| 2032 | /* |
| 2033 | * 3.3.16 READDIR3res |
| 2034 | * |
| 2035 | * struct dirlist3 { |
| 2036 | * entry3 *entries; |
| 2037 | * bool eof; |
| 2038 | * }; |
| 2039 | * |
| 2040 | * struct READDIR3resok { |
| 2041 | * post_op_attr dir_attributes; |
| 2042 | * cookieverf3 cookieverf; |
| 2043 | * dirlist3 reply; |
| 2044 | * }; |
| 2045 | * |
| 2046 | * struct READDIR3resfail { |
| 2047 | * post_op_attr dir_attributes; |
| 2048 | * }; |
| 2049 | * |
| 2050 | * union READDIR3res switch (nfsstat3 status) { |
| 2051 | * case NFS3_OK: |
| 2052 | * READDIR3resok resok; |
| 2053 | * default: |
| 2054 | * READDIR3resfail resfail; |
| 2055 | * }; |
| 2056 | * |
| 2057 | * Read the directory contents into the page cache, but otherwise |
| 2058 | * don't touch them. The actual decoding is done by nfs3_decode_entry() |
| 2059 | * during subsequent nfs_readdir() calls. |
| 2060 | */ |
| 2061 | static int decode_dirlist3(struct xdr_stream *xdr) |
| 2062 | { |
Trond Myklebust | 64bd577 | 2012-06-20 22:35:05 -0400 | [diff] [blame] | 2063 | return xdr_read_pages(xdr, xdr->buf->page_len); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2064 | } |
| 2065 | |
| 2066 | static int decode_readdir3resok(struct xdr_stream *xdr, |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 2067 | struct nfs3_readdirres *result, |
| 2068 | struct user_namespace *userns) |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2069 | { |
| 2070 | int error; |
| 2071 | |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 2072 | error = decode_post_op_attr(xdr, result->dir_attr, userns); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2073 | if (unlikely(error)) |
| 2074 | goto out; |
| 2075 | /* XXX: do we need to check if result->verf != NULL ? */ |
| 2076 | error = decode_cookieverf3(xdr, result->verf); |
| 2077 | if (unlikely(error)) |
| 2078 | goto out; |
| 2079 | error = decode_dirlist3(xdr); |
| 2080 | out: |
| 2081 | return error; |
| 2082 | } |
| 2083 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2084 | static int nfs3_xdr_dec_readdir3res(struct rpc_rqst *req, |
| 2085 | struct xdr_stream *xdr, |
Christoph Hellwig | fc01648 | 2017-05-08 15:09:02 +0200 | [diff] [blame] | 2086 | void *data) |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2087 | { |
Christoph Hellwig | fc01648 | 2017-05-08 15:09:02 +0200 | [diff] [blame] | 2088 | struct nfs3_readdirres *result = data; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2089 | enum nfs_stat status; |
| 2090 | int error; |
| 2091 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2092 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2093 | if (unlikely(error)) |
| 2094 | goto out; |
| 2095 | if (status != NFS3_OK) |
| 2096 | goto out_default; |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 2097 | error = decode_readdir3resok(xdr, result, rpc_rqst_userns(req)); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2098 | out: |
| 2099 | return error; |
| 2100 | out_default: |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 2101 | error = decode_post_op_attr(xdr, result->dir_attr, rpc_rqst_userns(req)); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2102 | if (unlikely(error)) |
| 2103 | goto out; |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 2104 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2105 | } |
| 2106 | |
| 2107 | /* |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2108 | * 3.3.18 FSSTAT3res |
| 2109 | * |
| 2110 | * struct FSSTAT3resok { |
| 2111 | * post_op_attr obj_attributes; |
| 2112 | * size3 tbytes; |
| 2113 | * size3 fbytes; |
| 2114 | * size3 abytes; |
| 2115 | * size3 tfiles; |
| 2116 | * size3 ffiles; |
| 2117 | * size3 afiles; |
| 2118 | * uint32 invarsec; |
| 2119 | * }; |
| 2120 | * |
| 2121 | * struct FSSTAT3resfail { |
| 2122 | * post_op_attr obj_attributes; |
| 2123 | * }; |
| 2124 | * |
| 2125 | * union FSSTAT3res switch (nfsstat3 status) { |
| 2126 | * case NFS3_OK: |
| 2127 | * FSSTAT3resok resok; |
| 2128 | * default: |
| 2129 | * FSSTAT3resfail resfail; |
| 2130 | * }; |
| 2131 | */ |
| 2132 | static int decode_fsstat3resok(struct xdr_stream *xdr, |
| 2133 | struct nfs_fsstat *result) |
| 2134 | { |
| 2135 | __be32 *p; |
| 2136 | |
| 2137 | p = xdr_inline_decode(xdr, 8 * 6 + 4); |
Chuck Lever | eb72f48 | 2019-02-11 11:24:21 -0500 | [diff] [blame] | 2138 | if (unlikely(!p)) |
| 2139 | return -EIO; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2140 | p = xdr_decode_size3(p, &result->tbytes); |
| 2141 | p = xdr_decode_size3(p, &result->fbytes); |
| 2142 | p = xdr_decode_size3(p, &result->abytes); |
| 2143 | p = xdr_decode_size3(p, &result->tfiles); |
| 2144 | p = xdr_decode_size3(p, &result->ffiles); |
| 2145 | xdr_decode_size3(p, &result->afiles); |
| 2146 | /* ignore invarsec */ |
| 2147 | return 0; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2148 | } |
| 2149 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2150 | static int nfs3_xdr_dec_fsstat3res(struct rpc_rqst *req, |
| 2151 | struct xdr_stream *xdr, |
Christoph Hellwig | fc01648 | 2017-05-08 15:09:02 +0200 | [diff] [blame] | 2152 | void *data) |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2153 | { |
Christoph Hellwig | fc01648 | 2017-05-08 15:09:02 +0200 | [diff] [blame] | 2154 | struct nfs_fsstat *result = data; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2155 | enum nfs_stat status; |
| 2156 | int error; |
| 2157 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2158 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2159 | if (unlikely(error)) |
| 2160 | goto out; |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 2161 | error = decode_post_op_attr(xdr, result->fattr, rpc_rqst_userns(req)); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2162 | if (unlikely(error)) |
| 2163 | goto out; |
| 2164 | if (status != NFS3_OK) |
| 2165 | goto out_status; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2166 | error = decode_fsstat3resok(xdr, result); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2167 | out: |
| 2168 | return error; |
| 2169 | out_status: |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 2170 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2171 | } |
| 2172 | |
| 2173 | /* |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2174 | * 3.3.19 FSINFO3res |
| 2175 | * |
| 2176 | * struct FSINFO3resok { |
| 2177 | * post_op_attr obj_attributes; |
| 2178 | * uint32 rtmax; |
| 2179 | * uint32 rtpref; |
| 2180 | * uint32 rtmult; |
| 2181 | * uint32 wtmax; |
| 2182 | * uint32 wtpref; |
| 2183 | * uint32 wtmult; |
| 2184 | * uint32 dtpref; |
| 2185 | * size3 maxfilesize; |
| 2186 | * nfstime3 time_delta; |
| 2187 | * uint32 properties; |
| 2188 | * }; |
| 2189 | * |
| 2190 | * struct FSINFO3resfail { |
| 2191 | * post_op_attr obj_attributes; |
| 2192 | * }; |
| 2193 | * |
| 2194 | * union FSINFO3res switch (nfsstat3 status) { |
| 2195 | * case NFS3_OK: |
| 2196 | * FSINFO3resok resok; |
| 2197 | * default: |
| 2198 | * FSINFO3resfail resfail; |
| 2199 | * }; |
| 2200 | */ |
| 2201 | static int decode_fsinfo3resok(struct xdr_stream *xdr, |
| 2202 | struct nfs_fsinfo *result) |
| 2203 | { |
| 2204 | __be32 *p; |
| 2205 | |
| 2206 | p = xdr_inline_decode(xdr, 4 * 7 + 8 + 8 + 4); |
Chuck Lever | eb72f48 | 2019-02-11 11:24:21 -0500 | [diff] [blame] | 2207 | if (unlikely(!p)) |
| 2208 | return -EIO; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2209 | result->rtmax = be32_to_cpup(p++); |
| 2210 | result->rtpref = be32_to_cpup(p++); |
| 2211 | result->rtmult = be32_to_cpup(p++); |
| 2212 | result->wtmax = be32_to_cpup(p++); |
| 2213 | result->wtpref = be32_to_cpup(p++); |
| 2214 | result->wtmult = be32_to_cpup(p++); |
| 2215 | result->dtpref = be32_to_cpup(p++); |
| 2216 | p = xdr_decode_size3(p, &result->maxfilesize); |
Chuck Lever | f604870 | 2010-12-14 14:57:02 +0000 | [diff] [blame] | 2217 | xdr_decode_nfstime3(p, &result->time_delta); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2218 | |
| 2219 | /* ignore properties */ |
| 2220 | result->lease_time = 0; |
Trond Myklebust | eea4133 | 2021-09-26 14:05:04 -0400 | [diff] [blame] | 2221 | result->change_attr_type = NFS4_CHANGE_TYPE_IS_UNDEFINED; |
Trond Myklebust | b622ffe | 2022-02-22 18:20:38 -0500 | [diff] [blame] | 2222 | result->xattr_support = 0; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2223 | return 0; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2224 | } |
| 2225 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2226 | static int nfs3_xdr_dec_fsinfo3res(struct rpc_rqst *req, |
| 2227 | struct xdr_stream *xdr, |
Christoph Hellwig | fc01648 | 2017-05-08 15:09:02 +0200 | [diff] [blame] | 2228 | void *data) |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2229 | { |
Christoph Hellwig | fc01648 | 2017-05-08 15:09:02 +0200 | [diff] [blame] | 2230 | struct nfs_fsinfo *result = data; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2231 | enum nfs_stat status; |
| 2232 | int error; |
| 2233 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2234 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2235 | if (unlikely(error)) |
| 2236 | goto out; |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 2237 | error = decode_post_op_attr(xdr, result->fattr, rpc_rqst_userns(req)); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2238 | if (unlikely(error)) |
| 2239 | goto out; |
| 2240 | if (status != NFS3_OK) |
| 2241 | goto out_status; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2242 | error = decode_fsinfo3resok(xdr, result); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2243 | out: |
| 2244 | return error; |
| 2245 | out_status: |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 2246 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2247 | } |
| 2248 | |
| 2249 | /* |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2250 | * 3.3.20 PATHCONF3res |
| 2251 | * |
| 2252 | * struct PATHCONF3resok { |
| 2253 | * post_op_attr obj_attributes; |
| 2254 | * uint32 linkmax; |
| 2255 | * uint32 name_max; |
| 2256 | * bool no_trunc; |
| 2257 | * bool chown_restricted; |
| 2258 | * bool case_insensitive; |
| 2259 | * bool case_preserving; |
| 2260 | * }; |
| 2261 | * |
| 2262 | * struct PATHCONF3resfail { |
| 2263 | * post_op_attr obj_attributes; |
| 2264 | * }; |
| 2265 | * |
| 2266 | * union PATHCONF3res switch (nfsstat3 status) { |
| 2267 | * case NFS3_OK: |
| 2268 | * PATHCONF3resok resok; |
| 2269 | * default: |
| 2270 | * PATHCONF3resfail resfail; |
| 2271 | * }; |
| 2272 | */ |
| 2273 | static int decode_pathconf3resok(struct xdr_stream *xdr, |
| 2274 | struct nfs_pathconf *result) |
| 2275 | { |
| 2276 | __be32 *p; |
| 2277 | |
| 2278 | p = xdr_inline_decode(xdr, 4 * 6); |
Chuck Lever | eb72f48 | 2019-02-11 11:24:21 -0500 | [diff] [blame] | 2279 | if (unlikely(!p)) |
| 2280 | return -EIO; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2281 | result->max_link = be32_to_cpup(p++); |
| 2282 | result->max_namelen = be32_to_cpup(p); |
| 2283 | /* ignore remaining fields */ |
| 2284 | return 0; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2285 | } |
| 2286 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2287 | static int nfs3_xdr_dec_pathconf3res(struct rpc_rqst *req, |
| 2288 | struct xdr_stream *xdr, |
Christoph Hellwig | fc01648 | 2017-05-08 15:09:02 +0200 | [diff] [blame] | 2289 | void *data) |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2290 | { |
Christoph Hellwig | fc01648 | 2017-05-08 15:09:02 +0200 | [diff] [blame] | 2291 | struct nfs_pathconf *result = data; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2292 | enum nfs_stat status; |
| 2293 | int error; |
| 2294 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2295 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2296 | if (unlikely(error)) |
| 2297 | goto out; |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 2298 | error = decode_post_op_attr(xdr, result->fattr, rpc_rqst_userns(req)); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2299 | if (unlikely(error)) |
| 2300 | goto out; |
| 2301 | if (status != NFS3_OK) |
| 2302 | goto out_status; |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2303 | error = decode_pathconf3resok(xdr, result); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2304 | out: |
| 2305 | return error; |
| 2306 | out_status: |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 2307 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2308 | } |
| 2309 | |
| 2310 | /* |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2311 | * 3.3.21 COMMIT3res |
| 2312 | * |
| 2313 | * struct COMMIT3resok { |
| 2314 | * wcc_data file_wcc; |
| 2315 | * writeverf3 verf; |
| 2316 | * }; |
| 2317 | * |
| 2318 | * struct COMMIT3resfail { |
| 2319 | * wcc_data file_wcc; |
| 2320 | * }; |
| 2321 | * |
| 2322 | * union COMMIT3res switch (nfsstat3 status) { |
| 2323 | * case NFS3_OK: |
| 2324 | * COMMIT3resok resok; |
| 2325 | * default: |
| 2326 | * COMMIT3resfail resfail; |
| 2327 | * }; |
| 2328 | */ |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2329 | static int nfs3_xdr_dec_commit3res(struct rpc_rqst *req, |
| 2330 | struct xdr_stream *xdr, |
Christoph Hellwig | fc01648 | 2017-05-08 15:09:02 +0200 | [diff] [blame] | 2331 | void *data) |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2332 | { |
Christoph Hellwig | fc01648 | 2017-05-08 15:09:02 +0200 | [diff] [blame] | 2333 | struct nfs_commitres *result = data; |
Trond Myklebust | 221203c | 2020-01-06 15:25:04 -0500 | [diff] [blame] | 2334 | struct nfs_writeverf *verf = result->verf; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2335 | enum nfs_stat status; |
| 2336 | int error; |
| 2337 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2338 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2339 | if (unlikely(error)) |
| 2340 | goto out; |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 2341 | error = decode_wcc_data(xdr, result->fattr, rpc_rqst_userns(req)); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2342 | if (unlikely(error)) |
| 2343 | goto out; |
Peng Tao | aabff4d | 2014-08-27 10:47:14 +0800 | [diff] [blame] | 2344 | result->op_status = status; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2345 | if (status != NFS3_OK) |
| 2346 | goto out_status; |
Trond Myklebust | 221203c | 2020-01-06 15:25:04 -0500 | [diff] [blame] | 2347 | error = decode_writeverf3(xdr, &verf->verifier); |
| 2348 | if (!error) |
| 2349 | verf->committed = NFS_FILE_SYNC; |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2350 | out: |
| 2351 | return error; |
| 2352 | out_status: |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 2353 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2354 | } |
| 2355 | |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 2356 | #ifdef CONFIG_NFS_V3_ACL |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 2357 | |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2358 | static inline int decode_getacl3resok(struct xdr_stream *xdr, |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 2359 | struct nfs3_getaclres *result, |
| 2360 | struct user_namespace *userns) |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2361 | { |
| 2362 | struct posix_acl **acl; |
| 2363 | unsigned int *aclcnt; |
| 2364 | size_t hdrlen; |
| 2365 | int error; |
| 2366 | |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 2367 | error = decode_post_op_attr(xdr, result->fattr, userns); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2368 | if (unlikely(error)) |
| 2369 | goto out; |
| 2370 | error = decode_uint32(xdr, &result->mask); |
| 2371 | if (unlikely(error)) |
| 2372 | goto out; |
| 2373 | error = -EINVAL; |
| 2374 | if (result->mask & ~(NFS_ACL|NFS_ACLCNT|NFS_DFACL|NFS_DFACLCNT)) |
| 2375 | goto out; |
| 2376 | |
Trond Myklebust | 1aecca3 | 2012-06-21 11:41:29 -0400 | [diff] [blame] | 2377 | hdrlen = xdr_stream_pos(xdr); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2378 | |
| 2379 | acl = NULL; |
| 2380 | if (result->mask & NFS_ACL) |
| 2381 | acl = &result->acl_access; |
| 2382 | aclcnt = NULL; |
| 2383 | if (result->mask & NFS_ACLCNT) |
| 2384 | aclcnt = &result->acl_access_count; |
| 2385 | error = nfsacl_decode(xdr->buf, hdrlen, aclcnt, acl); |
| 2386 | if (unlikely(error <= 0)) |
| 2387 | goto out; |
| 2388 | |
| 2389 | acl = NULL; |
| 2390 | if (result->mask & NFS_DFACL) |
| 2391 | acl = &result->acl_default; |
| 2392 | aclcnt = NULL; |
| 2393 | if (result->mask & NFS_DFACLCNT) |
| 2394 | aclcnt = &result->acl_default_count; |
| 2395 | error = nfsacl_decode(xdr->buf, hdrlen + error, aclcnt, acl); |
| 2396 | if (unlikely(error <= 0)) |
| 2397 | return error; |
| 2398 | error = 0; |
| 2399 | out: |
| 2400 | return error; |
| 2401 | } |
| 2402 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2403 | static int nfs3_xdr_dec_getacl3res(struct rpc_rqst *req, |
| 2404 | struct xdr_stream *xdr, |
Christoph Hellwig | fc01648 | 2017-05-08 15:09:02 +0200 | [diff] [blame] | 2405 | void *result) |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2406 | { |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2407 | enum nfs_stat status; |
| 2408 | int error; |
| 2409 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2410 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2411 | if (unlikely(error)) |
| 2412 | goto out; |
| 2413 | if (status != NFS3_OK) |
| 2414 | goto out_default; |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 2415 | error = decode_getacl3resok(xdr, result, rpc_rqst_userns(req)); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2416 | out: |
| 2417 | return error; |
| 2418 | out_default: |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 2419 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2420 | } |
| 2421 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2422 | static int nfs3_xdr_dec_setacl3res(struct rpc_rqst *req, |
| 2423 | struct xdr_stream *xdr, |
Christoph Hellwig | fc01648 | 2017-05-08 15:09:02 +0200 | [diff] [blame] | 2424 | void *result) |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2425 | { |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2426 | enum nfs_stat status; |
| 2427 | int error; |
| 2428 | |
Chuck Lever | bf26955 | 2010-12-14 14:59:29 +0000 | [diff] [blame] | 2429 | error = decode_nfsstat3(xdr, &status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2430 | if (unlikely(error)) |
| 2431 | goto out; |
| 2432 | if (status != NFS3_OK) |
| 2433 | goto out_default; |
Trond Myklebust | 264d948 | 2019-04-24 17:46:46 -0400 | [diff] [blame] | 2434 | error = decode_post_op_attr(xdr, result, rpc_rqst_userns(req)); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2435 | out: |
| 2436 | return error; |
| 2437 | out_default: |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 2438 | return nfs3_stat_to_errno(status); |
Chuck Lever | e4f9323 | 2010-12-14 14:56:30 +0000 | [diff] [blame] | 2439 | } |
| 2440 | |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 2441 | #endif /* CONFIG_NFS_V3_ACL */ |
| 2442 | |
Bryan Schumaker | 5e7e5a0 | 2012-05-10 16:47:18 -0400 | [diff] [blame] | 2443 | |
| 2444 | /* |
| 2445 | * We need to translate between nfs status return values and |
| 2446 | * the local errno values which may not be the same. |
| 2447 | */ |
| 2448 | static const struct { |
| 2449 | int stat; |
| 2450 | int errno; |
| 2451 | } nfs_errtbl[] = { |
| 2452 | { NFS_OK, 0 }, |
| 2453 | { NFSERR_PERM, -EPERM }, |
| 2454 | { NFSERR_NOENT, -ENOENT }, |
| 2455 | { NFSERR_IO, -errno_NFSERR_IO}, |
| 2456 | { NFSERR_NXIO, -ENXIO }, |
| 2457 | /* { NFSERR_EAGAIN, -EAGAIN }, */ |
| 2458 | { NFSERR_ACCES, -EACCES }, |
| 2459 | { NFSERR_EXIST, -EEXIST }, |
| 2460 | { NFSERR_XDEV, -EXDEV }, |
| 2461 | { NFSERR_NODEV, -ENODEV }, |
| 2462 | { NFSERR_NOTDIR, -ENOTDIR }, |
| 2463 | { NFSERR_ISDIR, -EISDIR }, |
| 2464 | { NFSERR_INVAL, -EINVAL }, |
| 2465 | { NFSERR_FBIG, -EFBIG }, |
| 2466 | { NFSERR_NOSPC, -ENOSPC }, |
| 2467 | { NFSERR_ROFS, -EROFS }, |
| 2468 | { NFSERR_MLINK, -EMLINK }, |
| 2469 | { NFSERR_NAMETOOLONG, -ENAMETOOLONG }, |
| 2470 | { NFSERR_NOTEMPTY, -ENOTEMPTY }, |
| 2471 | { NFSERR_DQUOT, -EDQUOT }, |
| 2472 | { NFSERR_STALE, -ESTALE }, |
| 2473 | { NFSERR_REMOTE, -EREMOTE }, |
| 2474 | #ifdef EWFLUSH |
| 2475 | { NFSERR_WFLUSH, -EWFLUSH }, |
| 2476 | #endif |
| 2477 | { NFSERR_BADHANDLE, -EBADHANDLE }, |
| 2478 | { NFSERR_NOT_SYNC, -ENOTSYNC }, |
| 2479 | { NFSERR_BAD_COOKIE, -EBADCOOKIE }, |
| 2480 | { NFSERR_NOTSUPP, -ENOTSUPP }, |
| 2481 | { NFSERR_TOOSMALL, -ETOOSMALL }, |
| 2482 | { NFSERR_SERVERFAULT, -EREMOTEIO }, |
| 2483 | { NFSERR_BADTYPE, -EBADTYPE }, |
| 2484 | { NFSERR_JUKEBOX, -EJUKEBOX }, |
| 2485 | { -1, -EIO } |
| 2486 | }; |
| 2487 | |
| 2488 | /** |
| 2489 | * nfs3_stat_to_errno - convert an NFS status code to a local errno |
| 2490 | * @status: NFS status code to convert |
| 2491 | * |
| 2492 | * Returns a local errno value, or -EIO if the NFS status code is |
| 2493 | * not recognized. This function is used jointly by NFSv2 and NFSv3. |
| 2494 | */ |
| 2495 | static int nfs3_stat_to_errno(enum nfs_stat status) |
| 2496 | { |
| 2497 | int i; |
| 2498 | |
| 2499 | for (i = 0; nfs_errtbl[i].stat != -1; i++) { |
| 2500 | if (nfs_errtbl[i].stat == (int)status) |
| 2501 | return nfs_errtbl[i].errno; |
| 2502 | } |
| 2503 | dprintk("NFS: Unrecognized nfs status value: %u\n", status); |
| 2504 | return nfs_errtbl[i].errno; |
| 2505 | } |
| 2506 | |
| 2507 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2508 | #define PROC(proc, argtype, restype, timer) \ |
| 2509 | [NFS3PROC_##proc] = { \ |
| 2510 | .p_proc = NFS3PROC_##proc, \ |
Christoph Hellwig | fcc8581 | 2017-05-08 10:01:49 +0200 | [diff] [blame] | 2511 | .p_encode = nfs3_xdr_enc_##argtype##3args, \ |
Christoph Hellwig | fc01648 | 2017-05-08 15:09:02 +0200 | [diff] [blame] | 2512 | .p_decode = nfs3_xdr_dec_##restype##3res, \ |
Chuck Lever | ad96b5b | 2010-12-14 14:56:01 +0000 | [diff] [blame] | 2513 | .p_arglen = NFS3_##argtype##args_sz, \ |
Chuck Lever | f5fc3c50 | 2010-12-14 14:56:42 +0000 | [diff] [blame] | 2514 | .p_replen = NFS3_##restype##res_sz, \ |
Chuck Lever | cc0175c | 2006-03-20 13:44:22 -0500 | [diff] [blame] | 2515 | .p_timer = timer, \ |
| 2516 | .p_statidx = NFS3PROC_##proc, \ |
| 2517 | .p_name = #proc, \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2518 | } |
| 2519 | |
Christoph Hellwig | 511e936 | 2017-05-12 15:36:49 +0200 | [diff] [blame] | 2520 | const struct rpc_procinfo nfs3_procedures[] = { |
Chuck Lever | f5fc3c50 | 2010-12-14 14:56:42 +0000 | [diff] [blame] | 2521 | PROC(GETATTR, getattr, getattr, 1), |
| 2522 | PROC(SETATTR, setattr, setattr, 0), |
| 2523 | PROC(LOOKUP, lookup, lookup, 2), |
| 2524 | PROC(ACCESS, access, access, 1), |
| 2525 | PROC(READLINK, readlink, readlink, 3), |
| 2526 | PROC(READ, read, read, 3), |
| 2527 | PROC(WRITE, write, write, 4), |
| 2528 | PROC(CREATE, create, create, 0), |
| 2529 | PROC(MKDIR, mkdir, create, 0), |
| 2530 | PROC(SYMLINK, symlink, create, 0), |
| 2531 | PROC(MKNOD, mknod, create, 0), |
| 2532 | PROC(REMOVE, remove, remove, 0), |
| 2533 | PROC(RMDIR, lookup, setattr, 0), |
| 2534 | PROC(RENAME, rename, rename, 0), |
| 2535 | PROC(LINK, link, link, 0), |
| 2536 | PROC(READDIR, readdir, readdir, 3), |
| 2537 | PROC(READDIRPLUS, readdirplus, readdir, 3), |
| 2538 | PROC(FSSTAT, getattr, fsstat, 0), |
| 2539 | PROC(FSINFO, getattr, fsinfo, 0), |
| 2540 | PROC(PATHCONF, getattr, pathconf, 0), |
| 2541 | PROC(COMMIT, commit, commit, 5), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2542 | }; |
| 2543 | |
Christoph Hellwig | c551858 | 2017-05-08 23:27:10 +0200 | [diff] [blame] | 2544 | static unsigned int nfs_version3_counts[ARRAY_SIZE(nfs3_procedures)]; |
Trond Myklebust | a613fa1 | 2012-01-20 13:53:56 -0500 | [diff] [blame] | 2545 | const struct rpc_version nfs_version3 = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2546 | .number = 3, |
Tobias Klauser | e8c96f8 | 2006-03-24 03:15:34 -0800 | [diff] [blame] | 2547 | .nrprocs = ARRAY_SIZE(nfs3_procedures), |
Christoph Hellwig | c551858 | 2017-05-08 23:27:10 +0200 | [diff] [blame] | 2548 | .procs = nfs3_procedures, |
| 2549 | .counts = nfs_version3_counts, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2550 | }; |
| 2551 | |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 2552 | #ifdef CONFIG_NFS_V3_ACL |
Christoph Hellwig | 511e936 | 2017-05-12 15:36:49 +0200 | [diff] [blame] | 2553 | static const struct rpc_procinfo nfs3_acl_procedures[] = { |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 2554 | [ACLPROC3_GETACL] = { |
| 2555 | .p_proc = ACLPROC3_GETACL, |
Christoph Hellwig | fcc8581 | 2017-05-08 10:01:49 +0200 | [diff] [blame] | 2556 | .p_encode = nfs3_xdr_enc_getacl3args, |
Christoph Hellwig | fc01648 | 2017-05-08 15:09:02 +0200 | [diff] [blame] | 2557 | .p_decode = nfs3_xdr_dec_getacl3res, |
Chuck Lever | 2bea90d | 2007-03-29 16:47:53 -0400 | [diff] [blame] | 2558 | .p_arglen = ACL3_getaclargs_sz, |
| 2559 | .p_replen = ACL3_getaclres_sz, |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 2560 | .p_timer = 1, |
Chuck Lever | cc0175c | 2006-03-20 13:44:22 -0500 | [diff] [blame] | 2561 | .p_name = "GETACL", |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 2562 | }, |
| 2563 | [ACLPROC3_SETACL] = { |
| 2564 | .p_proc = ACLPROC3_SETACL, |
Christoph Hellwig | fcc8581 | 2017-05-08 10:01:49 +0200 | [diff] [blame] | 2565 | .p_encode = nfs3_xdr_enc_setacl3args, |
Christoph Hellwig | fc01648 | 2017-05-08 15:09:02 +0200 | [diff] [blame] | 2566 | .p_decode = nfs3_xdr_dec_setacl3res, |
Chuck Lever | 2bea90d | 2007-03-29 16:47:53 -0400 | [diff] [blame] | 2567 | .p_arglen = ACL3_setaclargs_sz, |
| 2568 | .p_replen = ACL3_setaclres_sz, |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 2569 | .p_timer = 0, |
Chuck Lever | cc0175c | 2006-03-20 13:44:22 -0500 | [diff] [blame] | 2570 | .p_name = "SETACL", |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 2571 | }, |
| 2572 | }; |
| 2573 | |
Christoph Hellwig | c551858 | 2017-05-08 23:27:10 +0200 | [diff] [blame] | 2574 | static unsigned int nfs3_acl_counts[ARRAY_SIZE(nfs3_acl_procedures)]; |
Trond Myklebust | a613fa1 | 2012-01-20 13:53:56 -0500 | [diff] [blame] | 2575 | const struct rpc_version nfsacl_version3 = { |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 2576 | .number = 3, |
Christoph Hellwig | 9ae7d8f | 2017-05-12 15:51:24 +0200 | [diff] [blame] | 2577 | .nrprocs = ARRAY_SIZE(nfs3_acl_procedures), |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 2578 | .procs = nfs3_acl_procedures, |
Christoph Hellwig | c551858 | 2017-05-08 23:27:10 +0200 | [diff] [blame] | 2579 | .counts = nfs3_acl_counts, |
Andreas Gruenbacher | b7fa055 | 2005-06-22 17:16:27 +0000 | [diff] [blame] | 2580 | }; |
| 2581 | #endif /* CONFIG_NFS_V3_ACL */ |