Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * linux/fs/nfs/callback_xdr.c |
| 3 | * |
| 4 | * Copyright (C) 2004 Trond Myklebust |
| 5 | * |
| 6 | * NFSv4 callback encode/decode procedures |
| 7 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | #include <linux/kernel.h> |
| 9 | #include <linux/sunrpc/svc.h> |
| 10 | #include <linux/nfs4.h> |
| 11 | #include <linux/nfs_fs.h> |
Trond Myklebust | 9a3ba43 | 2012-03-12 18:01:48 -0400 | [diff] [blame] | 12 | #include <linux/ratelimit.h> |
| 13 | #include <linux/printk.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 14 | #include <linux/slab.h> |
Andy Adamson | c36fca5 | 2011-01-06 02:04:32 +0000 | [diff] [blame] | 15 | #include <linux/sunrpc/bc_xprt.h> |
Trond Myklebust | 4ce7971 | 2005-06-22 17:16:21 +0000 | [diff] [blame] | 16 | #include "nfs4_fs.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | #include "callback.h" |
Andy Adamson | c36fca5 | 2011-01-06 02:04:32 +0000 | [diff] [blame] | 18 | #include "internal.h" |
Trond Myklebust | 76e697b | 2012-11-26 14:20:49 -0500 | [diff] [blame] | 19 | #include "nfs4session.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 20 | |
| 21 | #define CB_OP_TAGLEN_MAXSZ (512) |
| 22 | #define CB_OP_HDR_RES_MAXSZ (2 + CB_OP_TAGLEN_MAXSZ) |
| 23 | #define CB_OP_GETATTR_BITMAP_MAXSZ (4) |
| 24 | #define CB_OP_GETATTR_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ + \ |
| 25 | CB_OP_GETATTR_BITMAP_MAXSZ + \ |
| 26 | 2 + 2 + 3 + 3) |
| 27 | #define CB_OP_RECALL_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ) |
| 28 | |
Benny Halevy | 4aece6a | 2009-04-01 09:23:26 -0400 | [diff] [blame] | 29 | #if defined(CONFIG_NFS_V4_1) |
Fred Isaman | f2a6256 | 2011-01-06 11:36:29 +0000 | [diff] [blame] | 30 | #define CB_OP_LAYOUTRECALL_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ) |
Marc Eshel | 1be5683 | 2011-05-22 19:47:09 +0300 | [diff] [blame] | 31 | #define CB_OP_DEVICENOTIFY_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ) |
Benny Halevy | 4aece6a | 2009-04-01 09:23:26 -0400 | [diff] [blame] | 32 | #define CB_OP_SEQUENCE_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ + \ |
| 33 | 4 + 1 + 3) |
Alexandros Batsakis | 31f0960 | 2009-12-05 13:27:02 -0500 | [diff] [blame] | 34 | #define CB_OP_RECALLANY_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ) |
Andy Adamson | b9efa1b | 2010-01-20 16:06:27 -0500 | [diff] [blame] | 35 | #define CB_OP_RECALLSLOT_RES_MAXSZ (CB_OP_HDR_RES_MAXSZ) |
Benny Halevy | 4aece6a | 2009-04-01 09:23:26 -0400 | [diff] [blame] | 36 | #endif /* CONFIG_NFS_V4_1 */ |
| 37 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | #define NFSDBG_FACILITY NFSDBG_CALLBACK |
| 39 | |
Andy Adamson | 31d2b43 | 2010-01-14 17:45:04 -0500 | [diff] [blame] | 40 | /* Internal error code */ |
| 41 | #define NFS4ERR_RESOURCE_HDR 11050 |
| 42 | |
Andy Adamson | c36fca5 | 2011-01-06 02:04:32 +0000 | [diff] [blame] | 43 | typedef __be32 (*callback_process_op_t)(void *, void *, |
| 44 | struct cb_process_state *); |
Al Viro | e6f684f | 2006-10-19 23:28:50 -0700 | [diff] [blame] | 45 | typedef __be32 (*callback_decode_arg_t)(struct svc_rqst *, struct xdr_stream *, void *); |
| 46 | typedef __be32 (*callback_encode_res_t)(struct svc_rqst *, struct xdr_stream *, void *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | |
| 48 | |
| 49 | struct callback_op { |
| 50 | callback_process_op_t process_op; |
| 51 | callback_decode_arg_t decode_args; |
| 52 | callback_encode_res_t encode_res; |
| 53 | long res_maxsize; |
| 54 | }; |
| 55 | |
| 56 | static struct callback_op callback_ops[]; |
| 57 | |
Al Viro | 7111c66 | 2006-10-19 23:28:45 -0700 | [diff] [blame] | 58 | static __be32 nfs4_callback_null(struct svc_rqst *rqstp, void *argp, void *resp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | { |
| 60 | return htonl(NFS4_OK); |
| 61 | } |
| 62 | |
Al Viro | 5704fde | 2006-10-19 23:28:51 -0700 | [diff] [blame] | 63 | static int nfs4_decode_void(struct svc_rqst *rqstp, __be32 *p, void *dummy) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | { |
| 65 | return xdr_argsize_check(rqstp, p); |
| 66 | } |
| 67 | |
Al Viro | 5704fde | 2006-10-19 23:28:51 -0700 | [diff] [blame] | 68 | static int nfs4_encode_void(struct svc_rqst *rqstp, __be32 *p, void *dummy) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | { |
| 70 | return xdr_ressize_check(rqstp, p); |
| 71 | } |
| 72 | |
Al Viro | 5704fde | 2006-10-19 23:28:51 -0700 | [diff] [blame] | 73 | static __be32 *read_buf(struct xdr_stream *xdr, int nbytes) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | { |
Al Viro | 5704fde | 2006-10-19 23:28:51 -0700 | [diff] [blame] | 75 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 76 | |
| 77 | p = xdr_inline_decode(xdr, nbytes); |
| 78 | if (unlikely(p == NULL)) |
Weston Andros Adamson | a030889 | 2012-01-26 13:32:23 -0500 | [diff] [blame] | 79 | printk(KERN_WARNING "NFS: NFSv4 callback reply buffer overflowed!\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | return p; |
| 81 | } |
| 82 | |
Al Viro | e6f684f | 2006-10-19 23:28:50 -0700 | [diff] [blame] | 83 | static __be32 decode_string(struct xdr_stream *xdr, unsigned int *len, const char **str) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | { |
Al Viro | 5704fde | 2006-10-19 23:28:51 -0700 | [diff] [blame] | 85 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | |
| 87 | p = read_buf(xdr, 4); |
| 88 | if (unlikely(p == NULL)) |
| 89 | return htonl(NFS4ERR_RESOURCE); |
| 90 | *len = ntohl(*p); |
| 91 | |
| 92 | if (*len != 0) { |
| 93 | p = read_buf(xdr, *len); |
| 94 | if (unlikely(p == NULL)) |
| 95 | return htonl(NFS4ERR_RESOURCE); |
| 96 | *str = (const char *)p; |
| 97 | } else |
| 98 | *str = NULL; |
| 99 | |
| 100 | return 0; |
| 101 | } |
| 102 | |
Al Viro | e6f684f | 2006-10-19 23:28:50 -0700 | [diff] [blame] | 103 | static __be32 decode_fh(struct xdr_stream *xdr, struct nfs_fh *fh) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | { |
Al Viro | 5704fde | 2006-10-19 23:28:51 -0700 | [diff] [blame] | 105 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | |
| 107 | p = read_buf(xdr, 4); |
| 108 | if (unlikely(p == NULL)) |
| 109 | return htonl(NFS4ERR_RESOURCE); |
| 110 | fh->size = ntohl(*p); |
| 111 | if (fh->size > NFS4_FHSIZE) |
| 112 | return htonl(NFS4ERR_BADHANDLE); |
| 113 | p = read_buf(xdr, fh->size); |
| 114 | if (unlikely(p == NULL)) |
| 115 | return htonl(NFS4ERR_RESOURCE); |
| 116 | memcpy(&fh->data[0], p, fh->size); |
| 117 | memset(&fh->data[fh->size], 0, sizeof(fh->data) - fh->size); |
| 118 | return 0; |
| 119 | } |
| 120 | |
Al Viro | e6f684f | 2006-10-19 23:28:50 -0700 | [diff] [blame] | 121 | static __be32 decode_bitmap(struct xdr_stream *xdr, uint32_t *bitmap) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 122 | { |
Al Viro | 5704fde | 2006-10-19 23:28:51 -0700 | [diff] [blame] | 123 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | unsigned int attrlen; |
| 125 | |
| 126 | p = read_buf(xdr, 4); |
| 127 | if (unlikely(p == NULL)) |
| 128 | return htonl(NFS4ERR_RESOURCE); |
| 129 | attrlen = ntohl(*p); |
| 130 | p = read_buf(xdr, attrlen << 2); |
| 131 | if (unlikely(p == NULL)) |
| 132 | return htonl(NFS4ERR_RESOURCE); |
| 133 | if (likely(attrlen > 0)) |
| 134 | bitmap[0] = ntohl(*p++); |
| 135 | if (attrlen > 1) |
| 136 | bitmap[1] = ntohl(*p); |
| 137 | return 0; |
| 138 | } |
| 139 | |
Al Viro | e6f684f | 2006-10-19 23:28:50 -0700 | [diff] [blame] | 140 | static __be32 decode_stateid(struct xdr_stream *xdr, nfs4_stateid *stateid) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | { |
Al Viro | 5704fde | 2006-10-19 23:28:51 -0700 | [diff] [blame] | 142 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 143 | |
Trond Myklebust | 2d2f24a | 2012-03-04 18:13:57 -0500 | [diff] [blame] | 144 | p = read_buf(xdr, NFS4_STATEID_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 145 | if (unlikely(p == NULL)) |
| 146 | return htonl(NFS4ERR_RESOURCE); |
Trond Myklebust | 2d2f24a | 2012-03-04 18:13:57 -0500 | [diff] [blame] | 147 | memcpy(stateid, p, NFS4_STATEID_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | return 0; |
| 149 | } |
| 150 | |
Al Viro | e6f684f | 2006-10-19 23:28:50 -0700 | [diff] [blame] | 151 | static __be32 decode_compound_hdr_arg(struct xdr_stream *xdr, struct cb_compound_hdr_arg *hdr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 152 | { |
Al Viro | 5704fde | 2006-10-19 23:28:51 -0700 | [diff] [blame] | 153 | __be32 *p; |
Al Viro | e6f684f | 2006-10-19 23:28:50 -0700 | [diff] [blame] | 154 | __be32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 155 | |
| 156 | status = decode_string(xdr, &hdr->taglen, &hdr->tag); |
| 157 | if (unlikely(status != 0)) |
| 158 | return status; |
| 159 | /* We do not like overly long tags! */ |
Chuck Lever | 5cce428 | 2007-10-26 13:33:01 -0400 | [diff] [blame] | 160 | if (hdr->taglen > CB_OP_TAGLEN_MAXSZ - 12) { |
Weston Andros Adamson | a030889 | 2012-01-26 13:32:23 -0500 | [diff] [blame] | 161 | printk("NFS: NFSv4 CALLBACK %s: client sent tag of length %u\n", |
Harvey Harrison | 3110ff8 | 2008-05-02 13:42:44 -0700 | [diff] [blame] | 162 | __func__, hdr->taglen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | return htonl(NFS4ERR_RESOURCE); |
| 164 | } |
| 165 | p = read_buf(xdr, 12); |
| 166 | if (unlikely(p == NULL)) |
| 167 | return htonl(NFS4ERR_RESOURCE); |
Benny Halevy | b8f2ef8 | 2009-04-01 09:23:19 -0400 | [diff] [blame] | 168 | hdr->minorversion = ntohl(*p++); |
Benny Halevy | 48a9e2d | 2009-04-01 09:23:20 -0400 | [diff] [blame] | 169 | /* Check minor version is zero or one. */ |
| 170 | if (hdr->minorversion <= 1) { |
Andy Adamson | c36fca5 | 2011-01-06 02:04:32 +0000 | [diff] [blame] | 171 | hdr->cb_ident = ntohl(*p++); /* ignored by v4.1 */ |
Benny Halevy | 48a9e2d | 2009-04-01 09:23:20 -0400 | [diff] [blame] | 172 | } else { |
Trond Myklebust | 9a3ba43 | 2012-03-12 18:01:48 -0400 | [diff] [blame] | 173 | pr_warn_ratelimited("NFS: %s: NFSv4 server callback with " |
Benny Halevy | b8f2ef8 | 2009-04-01 09:23:19 -0400 | [diff] [blame] | 174 | "illegal minor version %u!\n", |
| 175 | __func__, hdr->minorversion); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | return htonl(NFS4ERR_MINOR_VERS_MISMATCH); |
| 177 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 178 | hdr->nops = ntohl(*p); |
Benny Halevy | b8f2ef8 | 2009-04-01 09:23:19 -0400 | [diff] [blame] | 179 | dprintk("%s: minorversion %d nops %d\n", __func__, |
| 180 | hdr->minorversion, hdr->nops); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | return 0; |
| 182 | } |
| 183 | |
Al Viro | e6f684f | 2006-10-19 23:28:50 -0700 | [diff] [blame] | 184 | static __be32 decode_op_hdr(struct xdr_stream *xdr, unsigned int *op) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 185 | { |
Al Viro | 5704fde | 2006-10-19 23:28:51 -0700 | [diff] [blame] | 186 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 187 | p = read_buf(xdr, 4); |
| 188 | if (unlikely(p == NULL)) |
Andy Adamson | 31d2b43 | 2010-01-14 17:45:04 -0500 | [diff] [blame] | 189 | return htonl(NFS4ERR_RESOURCE_HDR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | *op = ntohl(*p); |
| 191 | return 0; |
| 192 | } |
| 193 | |
Al Viro | e6f684f | 2006-10-19 23:28:50 -0700 | [diff] [blame] | 194 | static __be32 decode_getattr_args(struct svc_rqst *rqstp, struct xdr_stream *xdr, struct cb_getattrargs *args) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | { |
Al Viro | e6f684f | 2006-10-19 23:28:50 -0700 | [diff] [blame] | 196 | __be32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | |
| 198 | status = decode_fh(xdr, &args->fh); |
| 199 | if (unlikely(status != 0)) |
| 200 | goto out; |
Chuck Lever | 671beed | 2007-12-10 14:58:22 -0500 | [diff] [blame] | 201 | args->addr = svc_addr(rqstp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | status = decode_bitmap(xdr, args->bitmap); |
| 203 | out: |
Harvey Harrison | 3110ff8 | 2008-05-02 13:42:44 -0700 | [diff] [blame] | 204 | dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | return status; |
| 206 | } |
| 207 | |
Al Viro | e6f684f | 2006-10-19 23:28:50 -0700 | [diff] [blame] | 208 | static __be32 decode_recall_args(struct svc_rqst *rqstp, struct xdr_stream *xdr, struct cb_recallargs *args) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 209 | { |
Al Viro | 5704fde | 2006-10-19 23:28:51 -0700 | [diff] [blame] | 210 | __be32 *p; |
Al Viro | e6f684f | 2006-10-19 23:28:50 -0700 | [diff] [blame] | 211 | __be32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | |
Chuck Lever | c1d3586 | 2007-12-10 14:58:29 -0500 | [diff] [blame] | 213 | args->addr = svc_addr(rqstp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | status = decode_stateid(xdr, &args->stateid); |
| 215 | if (unlikely(status != 0)) |
| 216 | goto out; |
| 217 | p = read_buf(xdr, 4); |
| 218 | if (unlikely(p == NULL)) { |
| 219 | status = htonl(NFS4ERR_RESOURCE); |
| 220 | goto out; |
| 221 | } |
| 222 | args->truncate = ntohl(*p); |
| 223 | status = decode_fh(xdr, &args->fh); |
| 224 | out: |
Harvey Harrison | 3110ff8 | 2008-05-02 13:42:44 -0700 | [diff] [blame] | 225 | dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); |
Alexey Dobriyan | 3873bc5 | 2006-05-27 03:31:12 +0400 | [diff] [blame] | 226 | return status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | } |
| 228 | |
Benny Halevy | 4aece6a | 2009-04-01 09:23:26 -0400 | [diff] [blame] | 229 | #if defined(CONFIG_NFS_V4_1) |
| 230 | |
Fred Isaman | f2a6256 | 2011-01-06 11:36:29 +0000 | [diff] [blame] | 231 | static __be32 decode_layoutrecall_args(struct svc_rqst *rqstp, |
| 232 | struct xdr_stream *xdr, |
| 233 | struct cb_layoutrecallargs *args) |
| 234 | { |
| 235 | __be32 *p; |
| 236 | __be32 status = 0; |
| 237 | uint32_t iomode; |
| 238 | |
| 239 | args->cbl_addr = svc_addr(rqstp); |
| 240 | p = read_buf(xdr, 4 * sizeof(uint32_t)); |
| 241 | if (unlikely(p == NULL)) { |
| 242 | status = htonl(NFS4ERR_BADXDR); |
| 243 | goto out; |
| 244 | } |
| 245 | |
| 246 | args->cbl_layout_type = ntohl(*p++); |
| 247 | /* Depite the spec's xdr, iomode really belongs in the FILE switch, |
Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 248 | * as it is unusable and ignored with the other types. |
Fred Isaman | f2a6256 | 2011-01-06 11:36:29 +0000 | [diff] [blame] | 249 | */ |
| 250 | iomode = ntohl(*p++); |
| 251 | args->cbl_layoutchanged = ntohl(*p++); |
| 252 | args->cbl_recall_type = ntohl(*p++); |
| 253 | |
| 254 | if (args->cbl_recall_type == RETURN_FILE) { |
| 255 | args->cbl_range.iomode = iomode; |
| 256 | status = decode_fh(xdr, &args->cbl_fh); |
| 257 | if (unlikely(status != 0)) |
| 258 | goto out; |
| 259 | |
| 260 | p = read_buf(xdr, 2 * sizeof(uint64_t)); |
| 261 | if (unlikely(p == NULL)) { |
| 262 | status = htonl(NFS4ERR_BADXDR); |
| 263 | goto out; |
| 264 | } |
| 265 | p = xdr_decode_hyper(p, &args->cbl_range.offset); |
| 266 | p = xdr_decode_hyper(p, &args->cbl_range.length); |
| 267 | status = decode_stateid(xdr, &args->cbl_stateid); |
| 268 | if (unlikely(status != 0)) |
| 269 | goto out; |
| 270 | } else if (args->cbl_recall_type == RETURN_FSID) { |
| 271 | p = read_buf(xdr, 2 * sizeof(uint64_t)); |
| 272 | if (unlikely(p == NULL)) { |
| 273 | status = htonl(NFS4ERR_BADXDR); |
| 274 | goto out; |
| 275 | } |
| 276 | p = xdr_decode_hyper(p, &args->cbl_fsid.major); |
| 277 | p = xdr_decode_hyper(p, &args->cbl_fsid.minor); |
| 278 | } else if (args->cbl_recall_type != RETURN_ALL) { |
| 279 | status = htonl(NFS4ERR_BADXDR); |
| 280 | goto out; |
| 281 | } |
| 282 | dprintk("%s: ltype 0x%x iomode %d changed %d recall_type %d\n", |
| 283 | __func__, |
| 284 | args->cbl_layout_type, iomode, |
| 285 | args->cbl_layoutchanged, args->cbl_recall_type); |
| 286 | out: |
| 287 | dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); |
| 288 | return status; |
| 289 | } |
| 290 | |
Marc Eshel | 1be5683 | 2011-05-22 19:47:09 +0300 | [diff] [blame] | 291 | static |
| 292 | __be32 decode_devicenotify_args(struct svc_rqst *rqstp, |
| 293 | struct xdr_stream *xdr, |
| 294 | struct cb_devicenotifyargs *args) |
| 295 | { |
| 296 | __be32 *p; |
| 297 | __be32 status = 0; |
| 298 | u32 tmp; |
| 299 | int n, i; |
| 300 | args->ndevs = 0; |
| 301 | |
| 302 | /* Num of device notifications */ |
| 303 | p = read_buf(xdr, sizeof(uint32_t)); |
| 304 | if (unlikely(p == NULL)) { |
| 305 | status = htonl(NFS4ERR_BADXDR); |
| 306 | goto out; |
| 307 | } |
| 308 | n = ntohl(*p++); |
| 309 | if (n <= 0) |
| 310 | goto out; |
Dan Carpenter | 363e0df0 | 2012-01-12 10:16:14 +0300 | [diff] [blame] | 311 | if (n > ULONG_MAX / sizeof(*args->devs)) { |
| 312 | status = htonl(NFS4ERR_BADXDR); |
| 313 | goto out; |
| 314 | } |
Marc Eshel | 1be5683 | 2011-05-22 19:47:09 +0300 | [diff] [blame] | 315 | |
| 316 | args->devs = kmalloc(n * sizeof(*args->devs), GFP_KERNEL); |
| 317 | if (!args->devs) { |
| 318 | status = htonl(NFS4ERR_DELAY); |
| 319 | goto out; |
| 320 | } |
| 321 | |
| 322 | /* Decode each dev notification */ |
| 323 | for (i = 0; i < n; i++) { |
| 324 | struct cb_devicenotifyitem *dev = &args->devs[i]; |
| 325 | |
| 326 | p = read_buf(xdr, (4 * sizeof(uint32_t)) + NFS4_DEVICEID4_SIZE); |
| 327 | if (unlikely(p == NULL)) { |
| 328 | status = htonl(NFS4ERR_BADXDR); |
| 329 | goto err; |
| 330 | } |
| 331 | |
| 332 | tmp = ntohl(*p++); /* bitmap size */ |
| 333 | if (tmp != 1) { |
| 334 | status = htonl(NFS4ERR_INVAL); |
| 335 | goto err; |
| 336 | } |
| 337 | dev->cbd_notify_type = ntohl(*p++); |
| 338 | if (dev->cbd_notify_type != NOTIFY_DEVICEID4_CHANGE && |
| 339 | dev->cbd_notify_type != NOTIFY_DEVICEID4_DELETE) { |
| 340 | status = htonl(NFS4ERR_INVAL); |
| 341 | goto err; |
| 342 | } |
| 343 | |
| 344 | tmp = ntohl(*p++); /* opaque size */ |
| 345 | if (((dev->cbd_notify_type == NOTIFY_DEVICEID4_CHANGE) && |
| 346 | (tmp != NFS4_DEVICEID4_SIZE + 8)) || |
| 347 | ((dev->cbd_notify_type == NOTIFY_DEVICEID4_DELETE) && |
| 348 | (tmp != NFS4_DEVICEID4_SIZE + 4))) { |
| 349 | status = htonl(NFS4ERR_INVAL); |
| 350 | goto err; |
| 351 | } |
| 352 | dev->cbd_layout_type = ntohl(*p++); |
| 353 | memcpy(dev->cbd_dev_id.data, p, NFS4_DEVICEID4_SIZE); |
| 354 | p += XDR_QUADLEN(NFS4_DEVICEID4_SIZE); |
| 355 | |
| 356 | if (dev->cbd_layout_type == NOTIFY_DEVICEID4_CHANGE) { |
| 357 | p = read_buf(xdr, sizeof(uint32_t)); |
| 358 | if (unlikely(p == NULL)) { |
| 359 | status = htonl(NFS4ERR_BADXDR); |
| 360 | goto err; |
| 361 | } |
| 362 | dev->cbd_immediate = ntohl(*p++); |
| 363 | } else { |
| 364 | dev->cbd_immediate = 0; |
| 365 | } |
| 366 | |
| 367 | args->ndevs++; |
| 368 | |
| 369 | dprintk("%s: type %d layout 0x%x immediate %d\n", |
| 370 | __func__, dev->cbd_notify_type, dev->cbd_layout_type, |
| 371 | dev->cbd_immediate); |
| 372 | } |
| 373 | out: |
| 374 | dprintk("%s: status %d ndevs %d\n", |
| 375 | __func__, ntohl(status), args->ndevs); |
| 376 | return status; |
| 377 | err: |
| 378 | kfree(args->devs); |
| 379 | goto out; |
| 380 | } |
| 381 | |
Andy Adamson | 9733f0d | 2010-01-22 12:03:08 -0500 | [diff] [blame] | 382 | static __be32 decode_sessionid(struct xdr_stream *xdr, |
Benny Halevy | 4aece6a | 2009-04-01 09:23:26 -0400 | [diff] [blame] | 383 | struct nfs4_sessionid *sid) |
| 384 | { |
Andy Adamson | 9733f0d | 2010-01-22 12:03:08 -0500 | [diff] [blame] | 385 | __be32 *p; |
Benny Halevy | 4aece6a | 2009-04-01 09:23:26 -0400 | [diff] [blame] | 386 | int len = NFS4_MAX_SESSIONID_LEN; |
| 387 | |
| 388 | p = read_buf(xdr, len); |
| 389 | if (unlikely(p == NULL)) |
Joe Perches | a419aef | 2009-08-18 11:18:35 -0700 | [diff] [blame] | 390 | return htonl(NFS4ERR_RESOURCE); |
Benny Halevy | 4aece6a | 2009-04-01 09:23:26 -0400 | [diff] [blame] | 391 | |
| 392 | memcpy(sid->data, p, len); |
| 393 | return 0; |
| 394 | } |
| 395 | |
Andy Adamson | 9733f0d | 2010-01-22 12:03:08 -0500 | [diff] [blame] | 396 | static __be32 decode_rc_list(struct xdr_stream *xdr, |
Benny Halevy | 4aece6a | 2009-04-01 09:23:26 -0400 | [diff] [blame] | 397 | struct referring_call_list *rc_list) |
| 398 | { |
Andy Adamson | 9733f0d | 2010-01-22 12:03:08 -0500 | [diff] [blame] | 399 | __be32 *p; |
Benny Halevy | 4aece6a | 2009-04-01 09:23:26 -0400 | [diff] [blame] | 400 | int i; |
Andy Adamson | 9733f0d | 2010-01-22 12:03:08 -0500 | [diff] [blame] | 401 | __be32 status; |
Benny Halevy | 4aece6a | 2009-04-01 09:23:26 -0400 | [diff] [blame] | 402 | |
| 403 | status = decode_sessionid(xdr, &rc_list->rcl_sessionid); |
| 404 | if (status) |
| 405 | goto out; |
| 406 | |
| 407 | status = htonl(NFS4ERR_RESOURCE); |
| 408 | p = read_buf(xdr, sizeof(uint32_t)); |
| 409 | if (unlikely(p == NULL)) |
| 410 | goto out; |
| 411 | |
| 412 | rc_list->rcl_nrefcalls = ntohl(*p++); |
| 413 | if (rc_list->rcl_nrefcalls) { |
| 414 | p = read_buf(xdr, |
| 415 | rc_list->rcl_nrefcalls * 2 * sizeof(uint32_t)); |
| 416 | if (unlikely(p == NULL)) |
| 417 | goto out; |
| 418 | rc_list->rcl_refcalls = kmalloc(rc_list->rcl_nrefcalls * |
| 419 | sizeof(*rc_list->rcl_refcalls), |
| 420 | GFP_KERNEL); |
| 421 | if (unlikely(rc_list->rcl_refcalls == NULL)) |
| 422 | goto out; |
| 423 | for (i = 0; i < rc_list->rcl_nrefcalls; i++) { |
| 424 | rc_list->rcl_refcalls[i].rc_sequenceid = ntohl(*p++); |
| 425 | rc_list->rcl_refcalls[i].rc_slotid = ntohl(*p++); |
| 426 | } |
| 427 | } |
| 428 | status = 0; |
| 429 | |
| 430 | out: |
| 431 | return status; |
| 432 | } |
| 433 | |
Andy Adamson | 9733f0d | 2010-01-22 12:03:08 -0500 | [diff] [blame] | 434 | static __be32 decode_cb_sequence_args(struct svc_rqst *rqstp, |
Benny Halevy | 4aece6a | 2009-04-01 09:23:26 -0400 | [diff] [blame] | 435 | struct xdr_stream *xdr, |
| 436 | struct cb_sequenceargs *args) |
| 437 | { |
Andy Adamson | 9733f0d | 2010-01-22 12:03:08 -0500 | [diff] [blame] | 438 | __be32 *p; |
Benny Halevy | 4aece6a | 2009-04-01 09:23:26 -0400 | [diff] [blame] | 439 | int i; |
Andy Adamson | 9733f0d | 2010-01-22 12:03:08 -0500 | [diff] [blame] | 440 | __be32 status; |
Benny Halevy | 4aece6a | 2009-04-01 09:23:26 -0400 | [diff] [blame] | 441 | |
| 442 | status = decode_sessionid(xdr, &args->csa_sessionid); |
| 443 | if (status) |
| 444 | goto out; |
| 445 | |
| 446 | status = htonl(NFS4ERR_RESOURCE); |
| 447 | p = read_buf(xdr, 5 * sizeof(uint32_t)); |
| 448 | if (unlikely(p == NULL)) |
| 449 | goto out; |
| 450 | |
Ricardo Labiaga | 65fc64e | 2009-04-01 09:23:30 -0400 | [diff] [blame] | 451 | args->csa_addr = svc_addr(rqstp); |
Benny Halevy | 4aece6a | 2009-04-01 09:23:26 -0400 | [diff] [blame] | 452 | args->csa_sequenceid = ntohl(*p++); |
| 453 | args->csa_slotid = ntohl(*p++); |
| 454 | args->csa_highestslotid = ntohl(*p++); |
| 455 | args->csa_cachethis = ntohl(*p++); |
| 456 | args->csa_nrclists = ntohl(*p++); |
| 457 | args->csa_rclists = NULL; |
| 458 | if (args->csa_nrclists) { |
Dan Carpenter | 0439f31 | 2012-06-12 10:37:08 +0300 | [diff] [blame] | 459 | args->csa_rclists = kmalloc_array(args->csa_nrclists, |
| 460 | sizeof(*args->csa_rclists), |
| 461 | GFP_KERNEL); |
Benny Halevy | 4aece6a | 2009-04-01 09:23:26 -0400 | [diff] [blame] | 462 | if (unlikely(args->csa_rclists == NULL)) |
| 463 | goto out; |
| 464 | |
| 465 | for (i = 0; i < args->csa_nrclists; i++) { |
| 466 | status = decode_rc_list(xdr, &args->csa_rclists[i]); |
| 467 | if (status) |
| 468 | goto out_free; |
| 469 | } |
| 470 | } |
| 471 | status = 0; |
| 472 | |
| 473 | dprintk("%s: sessionid %x:%x:%x:%x sequenceid %u slotid %u " |
| 474 | "highestslotid %u cachethis %d nrclists %u\n", |
| 475 | __func__, |
| 476 | ((u32 *)&args->csa_sessionid)[0], |
| 477 | ((u32 *)&args->csa_sessionid)[1], |
| 478 | ((u32 *)&args->csa_sessionid)[2], |
| 479 | ((u32 *)&args->csa_sessionid)[3], |
| 480 | args->csa_sequenceid, args->csa_slotid, |
| 481 | args->csa_highestslotid, args->csa_cachethis, |
| 482 | args->csa_nrclists); |
| 483 | out: |
| 484 | dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); |
| 485 | return status; |
| 486 | |
| 487 | out_free: |
| 488 | for (i = 0; i < args->csa_nrclists; i++) |
| 489 | kfree(args->csa_rclists[i].rcl_refcalls); |
| 490 | kfree(args->csa_rclists); |
| 491 | goto out; |
| 492 | } |
| 493 | |
Andy Adamson | 9733f0d | 2010-01-22 12:03:08 -0500 | [diff] [blame] | 494 | static __be32 decode_recallany_args(struct svc_rqst *rqstp, |
Alexandros Batsakis | 31f0960 | 2009-12-05 13:27:02 -0500 | [diff] [blame] | 495 | struct xdr_stream *xdr, |
| 496 | struct cb_recallanyargs *args) |
| 497 | { |
Peng Tao | d743c3c | 2011-10-23 20:22:38 -0700 | [diff] [blame] | 498 | uint32_t bitmap[2]; |
| 499 | __be32 *p, status; |
Alexandros Batsakis | 31f0960 | 2009-12-05 13:27:02 -0500 | [diff] [blame] | 500 | |
| 501 | args->craa_addr = svc_addr(rqstp); |
| 502 | p = read_buf(xdr, 4); |
| 503 | if (unlikely(p == NULL)) |
| 504 | return htonl(NFS4ERR_BADXDR); |
| 505 | args->craa_objs_to_keep = ntohl(*p++); |
Peng Tao | d743c3c | 2011-10-23 20:22:38 -0700 | [diff] [blame] | 506 | status = decode_bitmap(xdr, bitmap); |
| 507 | if (unlikely(status)) |
| 508 | return status; |
| 509 | args->craa_type_mask = bitmap[0]; |
Alexandros Batsakis | 31f0960 | 2009-12-05 13:27:02 -0500 | [diff] [blame] | 510 | |
| 511 | return 0; |
| 512 | } |
| 513 | |
Andy Adamson | 9733f0d | 2010-01-22 12:03:08 -0500 | [diff] [blame] | 514 | static __be32 decode_recallslot_args(struct svc_rqst *rqstp, |
Andy Adamson | b9efa1b | 2010-01-20 16:06:27 -0500 | [diff] [blame] | 515 | struct xdr_stream *xdr, |
| 516 | struct cb_recallslotargs *args) |
| 517 | { |
| 518 | __be32 *p; |
| 519 | |
| 520 | args->crsa_addr = svc_addr(rqstp); |
| 521 | p = read_buf(xdr, 4); |
| 522 | if (unlikely(p == NULL)) |
| 523 | return htonl(NFS4ERR_BADXDR); |
Trond Myklebust | d5fb4ce | 2012-11-20 20:24:02 -0500 | [diff] [blame] | 524 | args->crsa_target_highest_slotid = ntohl(*p++); |
Andy Adamson | b9efa1b | 2010-01-20 16:06:27 -0500 | [diff] [blame] | 525 | return 0; |
| 526 | } |
| 527 | |
Benny Halevy | 4aece6a | 2009-04-01 09:23:26 -0400 | [diff] [blame] | 528 | #endif /* CONFIG_NFS_V4_1 */ |
| 529 | |
Al Viro | e6f684f | 2006-10-19 23:28:50 -0700 | [diff] [blame] | 530 | static __be32 encode_string(struct xdr_stream *xdr, unsigned int len, const char *str) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 531 | { |
Al Viro | 5704fde | 2006-10-19 23:28:51 -0700 | [diff] [blame] | 532 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 533 | |
| 534 | p = xdr_reserve_space(xdr, 4 + len); |
| 535 | if (unlikely(p == NULL)) |
| 536 | return htonl(NFS4ERR_RESOURCE); |
| 537 | xdr_encode_opaque(p, str, len); |
| 538 | return 0; |
| 539 | } |
| 540 | |
| 541 | #define CB_SUPPORTED_ATTR0 (FATTR4_WORD0_CHANGE|FATTR4_WORD0_SIZE) |
| 542 | #define CB_SUPPORTED_ATTR1 (FATTR4_WORD1_TIME_METADATA|FATTR4_WORD1_TIME_MODIFY) |
Al Viro | 5704fde | 2006-10-19 23:28:51 -0700 | [diff] [blame] | 543 | static __be32 encode_attr_bitmap(struct xdr_stream *xdr, const uint32_t *bitmap, __be32 **savep) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 544 | { |
Al Viro | 5704fde | 2006-10-19 23:28:51 -0700 | [diff] [blame] | 545 | __be32 bm[2]; |
| 546 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 547 | |
| 548 | bm[0] = htonl(bitmap[0] & CB_SUPPORTED_ATTR0); |
| 549 | bm[1] = htonl(bitmap[1] & CB_SUPPORTED_ATTR1); |
| 550 | if (bm[1] != 0) { |
| 551 | p = xdr_reserve_space(xdr, 16); |
| 552 | if (unlikely(p == NULL)) |
| 553 | return htonl(NFS4ERR_RESOURCE); |
| 554 | *p++ = htonl(2); |
| 555 | *p++ = bm[0]; |
| 556 | *p++ = bm[1]; |
| 557 | } else if (bm[0] != 0) { |
| 558 | p = xdr_reserve_space(xdr, 12); |
| 559 | if (unlikely(p == NULL)) |
| 560 | return htonl(NFS4ERR_RESOURCE); |
| 561 | *p++ = htonl(1); |
| 562 | *p++ = bm[0]; |
| 563 | } else { |
| 564 | p = xdr_reserve_space(xdr, 8); |
| 565 | if (unlikely(p == NULL)) |
| 566 | return htonl(NFS4ERR_RESOURCE); |
| 567 | *p++ = htonl(0); |
| 568 | } |
| 569 | *savep = p; |
| 570 | return 0; |
| 571 | } |
| 572 | |
Al Viro | e6f684f | 2006-10-19 23:28:50 -0700 | [diff] [blame] | 573 | static __be32 encode_attr_change(struct xdr_stream *xdr, const uint32_t *bitmap, uint64_t change) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 574 | { |
Al Viro | 5704fde | 2006-10-19 23:28:51 -0700 | [diff] [blame] | 575 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 576 | |
| 577 | if (!(bitmap[0] & FATTR4_WORD0_CHANGE)) |
| 578 | return 0; |
| 579 | p = xdr_reserve_space(xdr, 8); |
Harvey Harrison | 90dc7d2 | 2008-02-20 13:03:05 -0800 | [diff] [blame] | 580 | if (unlikely(!p)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 581 | return htonl(NFS4ERR_RESOURCE); |
| 582 | p = xdr_encode_hyper(p, change); |
| 583 | return 0; |
| 584 | } |
| 585 | |
Al Viro | e6f684f | 2006-10-19 23:28:50 -0700 | [diff] [blame] | 586 | static __be32 encode_attr_size(struct xdr_stream *xdr, const uint32_t *bitmap, uint64_t size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 587 | { |
Al Viro | 5704fde | 2006-10-19 23:28:51 -0700 | [diff] [blame] | 588 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 589 | |
| 590 | if (!(bitmap[0] & FATTR4_WORD0_SIZE)) |
| 591 | return 0; |
| 592 | p = xdr_reserve_space(xdr, 8); |
Harvey Harrison | 90dc7d2 | 2008-02-20 13:03:05 -0800 | [diff] [blame] | 593 | if (unlikely(!p)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 594 | return htonl(NFS4ERR_RESOURCE); |
| 595 | p = xdr_encode_hyper(p, size); |
| 596 | return 0; |
| 597 | } |
| 598 | |
Al Viro | e6f684f | 2006-10-19 23:28:50 -0700 | [diff] [blame] | 599 | static __be32 encode_attr_time(struct xdr_stream *xdr, const struct timespec *time) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 600 | { |
Al Viro | 5704fde | 2006-10-19 23:28:51 -0700 | [diff] [blame] | 601 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 602 | |
| 603 | p = xdr_reserve_space(xdr, 12); |
Harvey Harrison | 90dc7d2 | 2008-02-20 13:03:05 -0800 | [diff] [blame] | 604 | if (unlikely(!p)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 605 | return htonl(NFS4ERR_RESOURCE); |
| 606 | p = xdr_encode_hyper(p, time->tv_sec); |
| 607 | *p = htonl(time->tv_nsec); |
| 608 | return 0; |
| 609 | } |
| 610 | |
Al Viro | e6f684f | 2006-10-19 23:28:50 -0700 | [diff] [blame] | 611 | static __be32 encode_attr_ctime(struct xdr_stream *xdr, const uint32_t *bitmap, const struct timespec *time) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 612 | { |
| 613 | if (!(bitmap[1] & FATTR4_WORD1_TIME_METADATA)) |
| 614 | return 0; |
| 615 | return encode_attr_time(xdr,time); |
| 616 | } |
| 617 | |
Al Viro | e6f684f | 2006-10-19 23:28:50 -0700 | [diff] [blame] | 618 | static __be32 encode_attr_mtime(struct xdr_stream *xdr, const uint32_t *bitmap, const struct timespec *time) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 619 | { |
| 620 | if (!(bitmap[1] & FATTR4_WORD1_TIME_MODIFY)) |
| 621 | return 0; |
| 622 | return encode_attr_time(xdr,time); |
| 623 | } |
| 624 | |
Al Viro | e6f684f | 2006-10-19 23:28:50 -0700 | [diff] [blame] | 625 | static __be32 encode_compound_hdr_res(struct xdr_stream *xdr, struct cb_compound_hdr_res *hdr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 626 | { |
Al Viro | e6f684f | 2006-10-19 23:28:50 -0700 | [diff] [blame] | 627 | __be32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 628 | |
| 629 | hdr->status = xdr_reserve_space(xdr, 4); |
| 630 | if (unlikely(hdr->status == NULL)) |
| 631 | return htonl(NFS4ERR_RESOURCE); |
| 632 | status = encode_string(xdr, hdr->taglen, hdr->tag); |
| 633 | if (unlikely(status != 0)) |
| 634 | return status; |
| 635 | hdr->nops = xdr_reserve_space(xdr, 4); |
| 636 | if (unlikely(hdr->nops == NULL)) |
| 637 | return htonl(NFS4ERR_RESOURCE); |
| 638 | return 0; |
| 639 | } |
| 640 | |
Al Viro | e6f684f | 2006-10-19 23:28:50 -0700 | [diff] [blame] | 641 | static __be32 encode_op_hdr(struct xdr_stream *xdr, uint32_t op, __be32 res) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 642 | { |
Al Viro | 5704fde | 2006-10-19 23:28:51 -0700 | [diff] [blame] | 643 | __be32 *p; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 644 | |
| 645 | p = xdr_reserve_space(xdr, 8); |
| 646 | if (unlikely(p == NULL)) |
Andy Adamson | 31d2b43 | 2010-01-14 17:45:04 -0500 | [diff] [blame] | 647 | return htonl(NFS4ERR_RESOURCE_HDR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 648 | *p++ = htonl(op); |
| 649 | *p = res; |
| 650 | return 0; |
| 651 | } |
| 652 | |
Al Viro | e6f684f | 2006-10-19 23:28:50 -0700 | [diff] [blame] | 653 | static __be32 encode_getattr_res(struct svc_rqst *rqstp, struct xdr_stream *xdr, const struct cb_getattrres *res) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 654 | { |
Al Viro | 5704fde | 2006-10-19 23:28:51 -0700 | [diff] [blame] | 655 | __be32 *savep = NULL; |
Al Viro | e6f684f | 2006-10-19 23:28:50 -0700 | [diff] [blame] | 656 | __be32 status = res->status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 657 | |
| 658 | if (unlikely(status != 0)) |
| 659 | goto out; |
| 660 | status = encode_attr_bitmap(xdr, res->bitmap, &savep); |
| 661 | if (unlikely(status != 0)) |
| 662 | goto out; |
| 663 | status = encode_attr_change(xdr, res->bitmap, res->change_attr); |
| 664 | if (unlikely(status != 0)) |
| 665 | goto out; |
| 666 | status = encode_attr_size(xdr, res->bitmap, res->size); |
| 667 | if (unlikely(status != 0)) |
| 668 | goto out; |
| 669 | status = encode_attr_ctime(xdr, res->bitmap, &res->ctime); |
| 670 | if (unlikely(status != 0)) |
| 671 | goto out; |
| 672 | status = encode_attr_mtime(xdr, res->bitmap, &res->mtime); |
| 673 | *savep = htonl((unsigned int)((char *)xdr->p - (char *)(savep+1))); |
| 674 | out: |
Harvey Harrison | 3110ff8 | 2008-05-02 13:42:44 -0700 | [diff] [blame] | 675 | dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 676 | return status; |
| 677 | } |
| 678 | |
Benny Halevy | 34bc47c9 | 2009-04-01 09:23:22 -0400 | [diff] [blame] | 679 | #if defined(CONFIG_NFS_V4_1) |
| 680 | |
Andy Adamson | 9733f0d | 2010-01-22 12:03:08 -0500 | [diff] [blame] | 681 | static __be32 encode_sessionid(struct xdr_stream *xdr, |
Benny Halevy | 4aece6a | 2009-04-01 09:23:26 -0400 | [diff] [blame] | 682 | const struct nfs4_sessionid *sid) |
| 683 | { |
Andy Adamson | 9733f0d | 2010-01-22 12:03:08 -0500 | [diff] [blame] | 684 | __be32 *p; |
Benny Halevy | 4aece6a | 2009-04-01 09:23:26 -0400 | [diff] [blame] | 685 | int len = NFS4_MAX_SESSIONID_LEN; |
| 686 | |
| 687 | p = xdr_reserve_space(xdr, len); |
| 688 | if (unlikely(p == NULL)) |
| 689 | return htonl(NFS4ERR_RESOURCE); |
| 690 | |
| 691 | memcpy(p, sid, len); |
| 692 | return 0; |
| 693 | } |
| 694 | |
Andy Adamson | 9733f0d | 2010-01-22 12:03:08 -0500 | [diff] [blame] | 695 | static __be32 encode_cb_sequence_res(struct svc_rqst *rqstp, |
Benny Halevy | 4aece6a | 2009-04-01 09:23:26 -0400 | [diff] [blame] | 696 | struct xdr_stream *xdr, |
| 697 | const struct cb_sequenceres *res) |
| 698 | { |
Andy Adamson | 9733f0d | 2010-01-22 12:03:08 -0500 | [diff] [blame] | 699 | __be32 *p; |
Dan Carpenter | e216c8c | 2012-06-12 10:37:39 +0300 | [diff] [blame] | 700 | __be32 status = res->csr_status; |
Benny Halevy | 4aece6a | 2009-04-01 09:23:26 -0400 | [diff] [blame] | 701 | |
| 702 | if (unlikely(status != 0)) |
| 703 | goto out; |
| 704 | |
| 705 | encode_sessionid(xdr, &res->csr_sessionid); |
| 706 | |
| 707 | p = xdr_reserve_space(xdr, 4 * sizeof(uint32_t)); |
| 708 | if (unlikely(p == NULL)) |
| 709 | return htonl(NFS4ERR_RESOURCE); |
| 710 | |
| 711 | *p++ = htonl(res->csr_sequenceid); |
| 712 | *p++ = htonl(res->csr_slotid); |
| 713 | *p++ = htonl(res->csr_highestslotid); |
| 714 | *p++ = htonl(res->csr_target_highestslotid); |
| 715 | out: |
| 716 | dprintk("%s: exit with status = %d\n", __func__, ntohl(status)); |
| 717 | return status; |
| 718 | } |
| 719 | |
Benny Halevy | 34bc47c9 | 2009-04-01 09:23:22 -0400 | [diff] [blame] | 720 | static __be32 |
| 721 | preprocess_nfs41_op(int nop, unsigned int op_nr, struct callback_op **op) |
| 722 | { |
Benny Halevy | 281fe15 | 2009-04-01 09:23:27 -0400 | [diff] [blame] | 723 | if (op_nr == OP_CB_SEQUENCE) { |
| 724 | if (nop != 0) |
| 725 | return htonl(NFS4ERR_SEQUENCE_POS); |
| 726 | } else { |
| 727 | if (nop == 0) |
| 728 | return htonl(NFS4ERR_OP_NOT_IN_SESSION); |
| 729 | } |
| 730 | |
Benny Halevy | 34bc47c9 | 2009-04-01 09:23:22 -0400 | [diff] [blame] | 731 | switch (op_nr) { |
| 732 | case OP_CB_GETATTR: |
| 733 | case OP_CB_RECALL: |
Benny Halevy | 4aece6a | 2009-04-01 09:23:26 -0400 | [diff] [blame] | 734 | case OP_CB_SEQUENCE: |
Alexandros Batsakis | 31f0960 | 2009-12-05 13:27:02 -0500 | [diff] [blame] | 735 | case OP_CB_RECALL_ANY: |
Andy Adamson | b9efa1b | 2010-01-20 16:06:27 -0500 | [diff] [blame] | 736 | case OP_CB_RECALL_SLOT: |
Fred Isaman | f2a6256 | 2011-01-06 11:36:29 +0000 | [diff] [blame] | 737 | case OP_CB_LAYOUTRECALL: |
Marc Eshel | 1be5683 | 2011-05-22 19:47:09 +0300 | [diff] [blame] | 738 | case OP_CB_NOTIFY_DEVICEID: |
Benny Halevy | 34bc47c9 | 2009-04-01 09:23:22 -0400 | [diff] [blame] | 739 | *op = &callback_ops[op_nr]; |
| 740 | break; |
| 741 | |
Benny Halevy | 34bc47c9 | 2009-04-01 09:23:22 -0400 | [diff] [blame] | 742 | case OP_CB_NOTIFY: |
| 743 | case OP_CB_PUSH_DELEG: |
Benny Halevy | 34bc47c9 | 2009-04-01 09:23:22 -0400 | [diff] [blame] | 744 | case OP_CB_RECALLABLE_OBJ_AVAIL: |
Benny Halevy | 34bc47c9 | 2009-04-01 09:23:22 -0400 | [diff] [blame] | 745 | case OP_CB_WANTS_CANCELLED: |
| 746 | case OP_CB_NOTIFY_LOCK: |
| 747 | return htonl(NFS4ERR_NOTSUPP); |
| 748 | |
| 749 | default: |
| 750 | return htonl(NFS4ERR_OP_ILLEGAL); |
| 751 | } |
| 752 | |
| 753 | return htonl(NFS_OK); |
| 754 | } |
| 755 | |
Andy Adamson | 42acd02 | 2011-01-06 02:04:34 +0000 | [diff] [blame] | 756 | static void nfs4_callback_free_slot(struct nfs4_session *session) |
| 757 | { |
| 758 | struct nfs4_slot_table *tbl = &session->bc_slot_table; |
| 759 | |
| 760 | spin_lock(&tbl->slot_tbl_lock); |
| 761 | /* |
| 762 | * Let the state manager know callback processing done. |
| 763 | * A single slot, so highest used slotid is either 0 or -1 |
| 764 | */ |
Trond Myklebust | 45d43c2 | 2012-02-06 19:38:51 -0500 | [diff] [blame] | 765 | tbl->highest_used_slotid = NFS4_NO_SLOT; |
Andy Adamson | 774d5f1 | 2013-05-20 14:13:50 -0400 | [diff] [blame] | 766 | nfs4_slot_tbl_drain_complete(tbl); |
Andy Adamson | 42acd02 | 2011-01-06 02:04:34 +0000 | [diff] [blame] | 767 | spin_unlock(&tbl->slot_tbl_lock); |
| 768 | } |
| 769 | |
Trond Myklebust | 55a6739 | 2011-08-02 14:46:29 -0400 | [diff] [blame] | 770 | static void nfs4_cb_free_slot(struct cb_process_state *cps) |
Andy Adamson | 42acd02 | 2011-01-06 02:04:34 +0000 | [diff] [blame] | 771 | { |
Trond Myklebust | 45d43c2 | 2012-02-06 19:38:51 -0500 | [diff] [blame] | 772 | if (cps->slotid != NFS4_NO_SLOT) |
Trond Myklebust | 55a6739 | 2011-08-02 14:46:29 -0400 | [diff] [blame] | 773 | nfs4_callback_free_slot(cps->clp->cl_session); |
Andy Adamson | 42acd02 | 2011-01-06 02:04:34 +0000 | [diff] [blame] | 774 | } |
| 775 | |
Benny Halevy | 34bc47c9 | 2009-04-01 09:23:22 -0400 | [diff] [blame] | 776 | #else /* CONFIG_NFS_V4_1 */ |
| 777 | |
| 778 | static __be32 |
| 779 | preprocess_nfs41_op(int nop, unsigned int op_nr, struct callback_op **op) |
| 780 | { |
| 781 | return htonl(NFS4ERR_MINOR_VERS_MISMATCH); |
| 782 | } |
| 783 | |
Trond Myklebust | 55a6739 | 2011-08-02 14:46:29 -0400 | [diff] [blame] | 784 | static void nfs4_cb_free_slot(struct cb_process_state *cps) |
Andy Adamson | 42acd02 | 2011-01-06 02:04:34 +0000 | [diff] [blame] | 785 | { |
| 786 | } |
Benny Halevy | 34bc47c9 | 2009-04-01 09:23:22 -0400 | [diff] [blame] | 787 | #endif /* CONFIG_NFS_V4_1 */ |
| 788 | |
| 789 | static __be32 |
| 790 | preprocess_nfs4_op(unsigned int op_nr, struct callback_op **op) |
| 791 | { |
| 792 | switch (op_nr) { |
| 793 | case OP_CB_GETATTR: |
| 794 | case OP_CB_RECALL: |
| 795 | *op = &callback_ops[op_nr]; |
| 796 | break; |
| 797 | default: |
| 798 | return htonl(NFS4ERR_OP_ILLEGAL); |
| 799 | } |
| 800 | |
| 801 | return htonl(NFS_OK); |
| 802 | } |
| 803 | |
| 804 | static __be32 process_op(uint32_t minorversion, int nop, |
| 805 | struct svc_rqst *rqstp, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 806 | struct xdr_stream *xdr_in, void *argp, |
Andy Adamson | c36fca5 | 2011-01-06 02:04:32 +0000 | [diff] [blame] | 807 | struct xdr_stream *xdr_out, void *resp, |
| 808 | struct cb_process_state *cps) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 809 | { |
Trond Myklebust | a162a6b | 2006-03-20 13:44:10 -0500 | [diff] [blame] | 810 | struct callback_op *op = &callback_ops[0]; |
Andy Adamson | 31d2b43 | 2010-01-14 17:45:04 -0500 | [diff] [blame] | 811 | unsigned int op_nr; |
Benny Halevy | 34bc47c9 | 2009-04-01 09:23:22 -0400 | [diff] [blame] | 812 | __be32 status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 813 | long maxlen; |
Al Viro | e6f684f | 2006-10-19 23:28:50 -0700 | [diff] [blame] | 814 | __be32 res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 815 | |
Harvey Harrison | 3110ff8 | 2008-05-02 13:42:44 -0700 | [diff] [blame] | 816 | dprintk("%s: start\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 817 | status = decode_op_hdr(xdr_in, &op_nr); |
Andy Adamson | 31d2b43 | 2010-01-14 17:45:04 -0500 | [diff] [blame] | 818 | if (unlikely(status)) |
| 819 | return status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 820 | |
Benny Halevy | 34bc47c9 | 2009-04-01 09:23:22 -0400 | [diff] [blame] | 821 | dprintk("%s: minorversion=%d nop=%d op_nr=%u\n", |
| 822 | __func__, minorversion, nop, op_nr); |
| 823 | |
| 824 | status = minorversion ? preprocess_nfs41_op(nop, op_nr, &op) : |
| 825 | preprocess_nfs4_op(op_nr, &op); |
| 826 | if (status == htonl(NFS4ERR_OP_ILLEGAL)) |
| 827 | op_nr = OP_CB_ILLEGAL; |
Andy Adamson | b92b301 | 2010-01-14 17:45:05 -0500 | [diff] [blame] | 828 | if (status) |
| 829 | goto encode_hdr; |
Andy Adamson | 31d2b43 | 2010-01-14 17:45:04 -0500 | [diff] [blame] | 830 | |
Andy Adamson | c36fca5 | 2011-01-06 02:04:32 +0000 | [diff] [blame] | 831 | if (cps->drc_status) { |
| 832 | status = cps->drc_status; |
Andy Adamson | 4911096 | 2010-01-14 17:45:08 -0500 | [diff] [blame] | 833 | goto encode_hdr; |
| 834 | } |
| 835 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 836 | maxlen = xdr_out->end - xdr_out->p; |
| 837 | if (maxlen > 0 && maxlen < PAGE_SIZE) { |
Andy Adamson | e95e60d | 2010-01-14 17:45:06 -0500 | [diff] [blame] | 838 | status = op->decode_args(rqstp, xdr_in, argp); |
| 839 | if (likely(status == 0)) |
Andy Adamson | c36fca5 | 2011-01-06 02:04:32 +0000 | [diff] [blame] | 840 | status = op->process_op(argp, resp, cps); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 841 | } else |
| 842 | status = htonl(NFS4ERR_RESOURCE); |
| 843 | |
Andy Adamson | b92b301 | 2010-01-14 17:45:05 -0500 | [diff] [blame] | 844 | encode_hdr: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 845 | res = encode_op_hdr(xdr_out, op_nr, status); |
Andy Adamson | 31d2b43 | 2010-01-14 17:45:04 -0500 | [diff] [blame] | 846 | if (unlikely(res)) |
| 847 | return res; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 848 | if (op->encode_res != NULL && status == 0) |
| 849 | status = op->encode_res(rqstp, xdr_out, resp); |
Harvey Harrison | 3110ff8 | 2008-05-02 13:42:44 -0700 | [diff] [blame] | 850 | dprintk("%s: done, status = %d\n", __func__, ntohl(status)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 851 | return status; |
| 852 | } |
| 853 | |
| 854 | /* |
| 855 | * Decode, process and encode a COMPOUND |
| 856 | */ |
Al Viro | 7111c66 | 2006-10-19 23:28:45 -0700 | [diff] [blame] | 857 | static __be32 nfs4_callback_compound(struct svc_rqst *rqstp, void *argp, void *resp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 858 | { |
Trond Myklebust | 3a6258e | 2008-05-06 13:32:40 -0400 | [diff] [blame] | 859 | struct cb_compound_hdr_arg hdr_arg = { 0 }; |
| 860 | struct cb_compound_hdr_res hdr_res = { NULL }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 861 | struct xdr_stream xdr_in, xdr_out; |
Andy Adamson | c36fca5 | 2011-01-06 02:04:32 +0000 | [diff] [blame] | 862 | __be32 *p, status; |
| 863 | struct cb_process_state cps = { |
| 864 | .drc_status = 0, |
| 865 | .clp = NULL, |
Trond Myklebust | 45d43c2 | 2012-02-06 19:38:51 -0500 | [diff] [blame] | 866 | .slotid = NFS4_NO_SLOT, |
Stanislav Kinsbursky | 9695c70 | 2012-07-25 16:57:06 +0400 | [diff] [blame] | 867 | .net = SVC_NET(rqstp), |
Andy Adamson | c36fca5 | 2011-01-06 02:04:32 +0000 | [diff] [blame] | 868 | }; |
Trond Myklebust | 3a6258e | 2008-05-06 13:32:40 -0400 | [diff] [blame] | 869 | unsigned int nops = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 870 | |
Harvey Harrison | 3110ff8 | 2008-05-02 13:42:44 -0700 | [diff] [blame] | 871 | dprintk("%s: start\n", __func__); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 872 | |
| 873 | xdr_init_decode(&xdr_in, &rqstp->rq_arg, rqstp->rq_arg.head[0].iov_base); |
| 874 | |
Al Viro | 5704fde | 2006-10-19 23:28:51 -0700 | [diff] [blame] | 875 | p = (__be32*)((char *)rqstp->rq_res.head[0].iov_base + rqstp->rq_res.head[0].iov_len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 876 | xdr_init_encode(&xdr_out, &rqstp->rq_res, p); |
| 877 | |
Trond Myklebust | 3a6258e | 2008-05-06 13:32:40 -0400 | [diff] [blame] | 878 | status = decode_compound_hdr_arg(&xdr_in, &hdr_arg); |
| 879 | if (status == __constant_htonl(NFS4ERR_RESOURCE)) |
| 880 | return rpc_garbage_args; |
| 881 | |
Andy Adamson | c36fca5 | 2011-01-06 02:04:32 +0000 | [diff] [blame] | 882 | if (hdr_arg.minorversion == 0) { |
Stanislav Kinsbursky | 9695c70 | 2012-07-25 16:57:06 +0400 | [diff] [blame] | 883 | cps.clp = nfs4_find_client_ident(SVC_NET(rqstp), hdr_arg.cb_ident); |
Andy Adamson | 778be23 | 2011-01-25 15:38:01 +0000 | [diff] [blame] | 884 | if (!cps.clp || !check_gss_callback_principal(cps.clp, rqstp)) |
Andy Adamson | c36fca5 | 2011-01-06 02:04:32 +0000 | [diff] [blame] | 885 | return rpc_drop_reply; |
Andy Adamson | 778be23 | 2011-01-25 15:38:01 +0000 | [diff] [blame] | 886 | } |
Andy Adamson | c36fca5 | 2011-01-06 02:04:32 +0000 | [diff] [blame] | 887 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 888 | hdr_res.taglen = hdr_arg.taglen; |
| 889 | hdr_res.tag = hdr_arg.tag; |
Trond Myklebust | 3a6258e | 2008-05-06 13:32:40 -0400 | [diff] [blame] | 890 | if (encode_compound_hdr_res(&xdr_out, &hdr_res) != 0) |
| 891 | return rpc_system_err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 892 | |
Trond Myklebust | 3a6258e | 2008-05-06 13:32:40 -0400 | [diff] [blame] | 893 | while (status == 0 && nops != hdr_arg.nops) { |
Andy Adamson | 4911096 | 2010-01-14 17:45:08 -0500 | [diff] [blame] | 894 | status = process_op(hdr_arg.minorversion, nops, rqstp, |
Andy Adamson | c36fca5 | 2011-01-06 02:04:32 +0000 | [diff] [blame] | 895 | &xdr_in, argp, &xdr_out, resp, &cps); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 896 | nops++; |
| 897 | } |
Trond Myklebust | 3a6258e | 2008-05-06 13:32:40 -0400 | [diff] [blame] | 898 | |
Andy Adamson | 31d2b43 | 2010-01-14 17:45:04 -0500 | [diff] [blame] | 899 | /* Buffer overflow in decode_ops_hdr or encode_ops_hdr. Return |
| 900 | * resource error in cb_compound status without returning op */ |
| 901 | if (unlikely(status == htonl(NFS4ERR_RESOURCE_HDR))) { |
| 902 | status = htonl(NFS4ERR_RESOURCE); |
| 903 | nops--; |
| 904 | } |
| 905 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 906 | *hdr_res.status = status; |
| 907 | *hdr_res.nops = htonl(nops); |
Trond Myklebust | 55a6739 | 2011-08-02 14:46:29 -0400 | [diff] [blame] | 908 | nfs4_cb_free_slot(&cps); |
Andy Adamson | c36fca5 | 2011-01-06 02:04:32 +0000 | [diff] [blame] | 909 | nfs_put_client(cps.clp); |
Harvey Harrison | 3110ff8 | 2008-05-02 13:42:44 -0700 | [diff] [blame] | 910 | dprintk("%s: done, status = %u\n", __func__, ntohl(status)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 911 | return rpc_success; |
| 912 | } |
| 913 | |
| 914 | /* |
| 915 | * Define NFS4 callback COMPOUND ops. |
| 916 | */ |
| 917 | static struct callback_op callback_ops[] = { |
| 918 | [0] = { |
| 919 | .res_maxsize = CB_OP_HDR_RES_MAXSZ, |
| 920 | }, |
| 921 | [OP_CB_GETATTR] = { |
| 922 | .process_op = (callback_process_op_t)nfs4_callback_getattr, |
| 923 | .decode_args = (callback_decode_arg_t)decode_getattr_args, |
| 924 | .encode_res = (callback_encode_res_t)encode_getattr_res, |
| 925 | .res_maxsize = CB_OP_GETATTR_RES_MAXSZ, |
| 926 | }, |
| 927 | [OP_CB_RECALL] = { |
| 928 | .process_op = (callback_process_op_t)nfs4_callback_recall, |
| 929 | .decode_args = (callback_decode_arg_t)decode_recall_args, |
| 930 | .res_maxsize = CB_OP_RECALL_RES_MAXSZ, |
Benny Halevy | 4aece6a | 2009-04-01 09:23:26 -0400 | [diff] [blame] | 931 | }, |
| 932 | #if defined(CONFIG_NFS_V4_1) |
Fred Isaman | f2a6256 | 2011-01-06 11:36:29 +0000 | [diff] [blame] | 933 | [OP_CB_LAYOUTRECALL] = { |
| 934 | .process_op = (callback_process_op_t)nfs4_callback_layoutrecall, |
| 935 | .decode_args = |
| 936 | (callback_decode_arg_t)decode_layoutrecall_args, |
| 937 | .res_maxsize = CB_OP_LAYOUTRECALL_RES_MAXSZ, |
| 938 | }, |
Marc Eshel | 1be5683 | 2011-05-22 19:47:09 +0300 | [diff] [blame] | 939 | [OP_CB_NOTIFY_DEVICEID] = { |
| 940 | .process_op = (callback_process_op_t)nfs4_callback_devicenotify, |
| 941 | .decode_args = |
| 942 | (callback_decode_arg_t)decode_devicenotify_args, |
| 943 | .res_maxsize = CB_OP_DEVICENOTIFY_RES_MAXSZ, |
| 944 | }, |
Benny Halevy | 4aece6a | 2009-04-01 09:23:26 -0400 | [diff] [blame] | 945 | [OP_CB_SEQUENCE] = { |
| 946 | .process_op = (callback_process_op_t)nfs4_callback_sequence, |
| 947 | .decode_args = (callback_decode_arg_t)decode_cb_sequence_args, |
| 948 | .encode_res = (callback_encode_res_t)encode_cb_sequence_res, |
| 949 | .res_maxsize = CB_OP_SEQUENCE_RES_MAXSZ, |
| 950 | }, |
Alexandros Batsakis | 31f0960 | 2009-12-05 13:27:02 -0500 | [diff] [blame] | 951 | [OP_CB_RECALL_ANY] = { |
| 952 | .process_op = (callback_process_op_t)nfs4_callback_recallany, |
| 953 | .decode_args = (callback_decode_arg_t)decode_recallany_args, |
| 954 | .res_maxsize = CB_OP_RECALLANY_RES_MAXSZ, |
| 955 | }, |
Andy Adamson | b9efa1b | 2010-01-20 16:06:27 -0500 | [diff] [blame] | 956 | [OP_CB_RECALL_SLOT] = { |
| 957 | .process_op = (callback_process_op_t)nfs4_callback_recallslot, |
| 958 | .decode_args = (callback_decode_arg_t)decode_recallslot_args, |
| 959 | .res_maxsize = CB_OP_RECALLSLOT_RES_MAXSZ, |
| 960 | }, |
Benny Halevy | 4aece6a | 2009-04-01 09:23:26 -0400 | [diff] [blame] | 961 | #endif /* CONFIG_NFS_V4_1 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 962 | }; |
| 963 | |
| 964 | /* |
| 965 | * Define NFS4 callback procedures |
| 966 | */ |
| 967 | static struct svc_procedure nfs4_callback_procedures1[] = { |
| 968 | [CB_NULL] = { |
| 969 | .pc_func = nfs4_callback_null, |
| 970 | .pc_decode = (kxdrproc_t)nfs4_decode_void, |
| 971 | .pc_encode = (kxdrproc_t)nfs4_encode_void, |
| 972 | .pc_xdrressize = 1, |
| 973 | }, |
| 974 | [CB_COMPOUND] = { |
| 975 | .pc_func = nfs4_callback_compound, |
| 976 | .pc_encode = (kxdrproc_t)nfs4_encode_void, |
| 977 | .pc_argsize = 256, |
| 978 | .pc_ressize = 256, |
| 979 | .pc_xdrressize = NFS4_CALLBACK_BUFSIZE, |
| 980 | } |
| 981 | }; |
| 982 | |
| 983 | struct svc_version nfs4_callback_version1 = { |
| 984 | .vs_vers = 1, |
| 985 | .vs_nproc = ARRAY_SIZE(nfs4_callback_procedures1), |
| 986 | .vs_proc = nfs4_callback_procedures1, |
| 987 | .vs_xdrsize = NFS4_CALLBACK_XDRSIZE, |
| 988 | .vs_dispatch = NULL, |
Steve Dickson | 49697ee | 2009-10-13 16:07:33 -0400 | [diff] [blame] | 989 | .vs_hidden = 1, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 990 | }; |
| 991 | |
Alexandros Batsakis | 07bccc2 | 2009-12-05 13:19:01 -0500 | [diff] [blame] | 992 | struct svc_version nfs4_callback_version4 = { |
| 993 | .vs_vers = 4, |
| 994 | .vs_nproc = ARRAY_SIZE(nfs4_callback_procedures1), |
| 995 | .vs_proc = nfs4_callback_procedures1, |
| 996 | .vs_xdrsize = NFS4_CALLBACK_XDRSIZE, |
| 997 | .vs_dispatch = NULL, |
Jeff Layton | 6070295 | 2011-11-04 07:04:10 -0400 | [diff] [blame] | 998 | .vs_hidden = 1, |
Alexandros Batsakis | 07bccc2 | 2009-12-05 13:19:01 -0500 | [diff] [blame] | 999 | }; |