David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 1 | /* AFS File Server client stubs |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | * |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 3 | * Copyright (C) 2002, 2007 Red Hat, Inc. All Rights Reserved. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | * Written by David Howells (dhowells@redhat.com) |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU General Public License |
| 8 | * as published by the Free Software Foundation; either version |
| 9 | * 2 of the License, or (at your option) any later version. |
| 10 | */ |
| 11 | |
| 12 | #include <linux/init.h> |
| 13 | #include <linux/sched.h> |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 14 | #include <linux/circ_buf.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 15 | #include "internal.h" |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 16 | #include "afs_fs.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 18 | /* |
David Howells | 260a980 | 2007-04-26 15:59:35 -0700 | [diff] [blame] | 19 | * decode an AFSFid block |
| 20 | */ |
| 21 | static void xdr_decode_AFSFid(const __be32 **_bp, struct afs_fid *fid) |
| 22 | { |
| 23 | const __be32 *bp = *_bp; |
| 24 | |
| 25 | fid->vid = ntohl(*bp++); |
| 26 | fid->vnode = ntohl(*bp++); |
| 27 | fid->unique = ntohl(*bp++); |
| 28 | *_bp = bp; |
| 29 | } |
| 30 | |
| 31 | /* |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 32 | * decode an AFSFetchStatus block |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | */ |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 34 | static void xdr_decode_AFSFetchStatus(const __be32 **_bp, |
David Howells | 260a980 | 2007-04-26 15:59:35 -0700 | [diff] [blame] | 35 | struct afs_file_status *status, |
David Howells | 31143d5 | 2007-05-09 02:33:46 -0700 | [diff] [blame] | 36 | struct afs_vnode *vnode, |
| 37 | afs_dataversion_t *store_version) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | { |
David Howells | 31143d5 | 2007-05-09 02:33:46 -0700 | [diff] [blame] | 39 | afs_dataversion_t expected_version; |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 40 | const __be32 *bp = *_bp; |
| 41 | umode_t mode; |
David Howells | 260a980 | 2007-04-26 15:59:35 -0700 | [diff] [blame] | 42 | u64 data_version, size; |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 43 | u32 changed = 0; /* becomes non-zero if ctime-type changes seen */ |
| 44 | |
| 45 | #define EXTRACT(DST) \ |
| 46 | do { \ |
| 47 | u32 x = ntohl(*bp++); \ |
| 48 | changed |= DST - x; \ |
| 49 | DST = x; \ |
| 50 | } while (0) |
| 51 | |
David Howells | 260a980 | 2007-04-26 15:59:35 -0700 | [diff] [blame] | 52 | status->if_version = ntohl(*bp++); |
| 53 | EXTRACT(status->type); |
| 54 | EXTRACT(status->nlink); |
| 55 | size = ntohl(*bp++); |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 56 | data_version = ntohl(*bp++); |
David Howells | 260a980 | 2007-04-26 15:59:35 -0700 | [diff] [blame] | 57 | EXTRACT(status->author); |
| 58 | EXTRACT(status->owner); |
| 59 | EXTRACT(status->caller_access); /* call ticket dependent */ |
| 60 | EXTRACT(status->anon_access); |
| 61 | EXTRACT(status->mode); |
| 62 | EXTRACT(status->parent.vnode); |
| 63 | EXTRACT(status->parent.unique); |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 64 | bp++; /* seg size */ |
David Howells | 260a980 | 2007-04-26 15:59:35 -0700 | [diff] [blame] | 65 | status->mtime_client = ntohl(*bp++); |
| 66 | status->mtime_server = ntohl(*bp++); |
| 67 | EXTRACT(status->group); |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 68 | bp++; /* sync counter */ |
| 69 | data_version |= (u64) ntohl(*bp++) << 32; |
David Howells | e8d6c55 | 2007-07-15 23:40:12 -0700 | [diff] [blame] | 70 | EXTRACT(status->lock_count); |
David Howells | 260a980 | 2007-04-26 15:59:35 -0700 | [diff] [blame] | 71 | size |= (u64) ntohl(*bp++) << 32; |
| 72 | bp++; /* spare 4 */ |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 73 | *_bp = bp; |
| 74 | |
David Howells | 260a980 | 2007-04-26 15:59:35 -0700 | [diff] [blame] | 75 | if (size != status->size) { |
| 76 | status->size = size; |
| 77 | changed |= true; |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 78 | } |
David Howells | 260a980 | 2007-04-26 15:59:35 -0700 | [diff] [blame] | 79 | status->mode &= S_IALLUGO; |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 80 | |
| 81 | _debug("vnode time %lx, %lx", |
David Howells | 260a980 | 2007-04-26 15:59:35 -0700 | [diff] [blame] | 82 | status->mtime_client, status->mtime_server); |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 83 | |
David Howells | 260a980 | 2007-04-26 15:59:35 -0700 | [diff] [blame] | 84 | if (vnode) { |
| 85 | status->parent.vid = vnode->fid.vid; |
| 86 | if (changed && !test_bit(AFS_VNODE_UNSET, &vnode->flags)) { |
| 87 | _debug("vnode changed"); |
| 88 | i_size_write(&vnode->vfs_inode, size); |
| 89 | vnode->vfs_inode.i_uid = status->owner; |
| 90 | vnode->vfs_inode.i_gid = status->group; |
| 91 | vnode->vfs_inode.i_version = vnode->fid.unique; |
| 92 | vnode->vfs_inode.i_nlink = status->nlink; |
| 93 | |
| 94 | mode = vnode->vfs_inode.i_mode; |
| 95 | mode &= ~S_IALLUGO; |
| 96 | mode |= status->mode; |
| 97 | barrier(); |
| 98 | vnode->vfs_inode.i_mode = mode; |
| 99 | } |
| 100 | |
| 101 | vnode->vfs_inode.i_ctime.tv_sec = status->mtime_server; |
| 102 | vnode->vfs_inode.i_mtime = vnode->vfs_inode.i_ctime; |
| 103 | vnode->vfs_inode.i_atime = vnode->vfs_inode.i_ctime; |
| 104 | } |
| 105 | |
David Howells | 31143d5 | 2007-05-09 02:33:46 -0700 | [diff] [blame] | 106 | expected_version = status->data_version; |
| 107 | if (store_version) |
| 108 | expected_version = *store_version; |
| 109 | |
| 110 | if (expected_version != data_version) { |
David Howells | 260a980 | 2007-04-26 15:59:35 -0700 | [diff] [blame] | 111 | status->data_version = data_version; |
| 112 | if (vnode && !test_bit(AFS_VNODE_UNSET, &vnode->flags)) { |
| 113 | _debug("vnode modified %llx on {%x:%u}", |
David S. Miller | ba3e0e1a | 2007-04-26 16:06:22 -0700 | [diff] [blame] | 114 | (unsigned long long) data_version, |
| 115 | vnode->fid.vid, vnode->fid.vnode); |
David Howells | 260a980 | 2007-04-26 15:59:35 -0700 | [diff] [blame] | 116 | set_bit(AFS_VNODE_MODIFIED, &vnode->flags); |
| 117 | set_bit(AFS_VNODE_ZAP_DATA, &vnode->flags); |
| 118 | } |
David Howells | 31143d5 | 2007-05-09 02:33:46 -0700 | [diff] [blame] | 119 | } else if (store_version) { |
| 120 | status->data_version = data_version; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | } |
David Howells | ec26815 | 2007-04-26 15:49:28 -0700 | [diff] [blame] | 122 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | /* |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 125 | * decode an AFSCallBack block |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | */ |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 127 | static void xdr_decode_AFSCallBack(const __be32 **_bp, struct afs_vnode *vnode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | { |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 129 | const __be32 *bp = *_bp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 130 | |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 131 | vnode->cb_version = ntohl(*bp++); |
| 132 | vnode->cb_expiry = ntohl(*bp++); |
| 133 | vnode->cb_type = ntohl(*bp++); |
| 134 | vnode->cb_expires = vnode->cb_expiry + get_seconds(); |
| 135 | *_bp = bp; |
David Howells | ec26815 | 2007-04-26 15:49:28 -0700 | [diff] [blame] | 136 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | |
David Howells | 260a980 | 2007-04-26 15:59:35 -0700 | [diff] [blame] | 138 | static void xdr_decode_AFSCallBack_raw(const __be32 **_bp, |
| 139 | struct afs_callback *cb) |
| 140 | { |
| 141 | const __be32 *bp = *_bp; |
| 142 | |
| 143 | cb->version = ntohl(*bp++); |
| 144 | cb->expiry = ntohl(*bp++); |
| 145 | cb->type = ntohl(*bp++); |
| 146 | *_bp = bp; |
| 147 | } |
| 148 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | /* |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 150 | * decode an AFSVolSync block |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | */ |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 152 | static void xdr_decode_AFSVolSync(const __be32 **_bp, |
| 153 | struct afs_volsync *volsync) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | { |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 155 | const __be32 *bp = *_bp; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 157 | volsync->creation = ntohl(*bp++); |
| 158 | bp++; /* spare2 */ |
| 159 | bp++; /* spare3 */ |
| 160 | bp++; /* spare4 */ |
| 161 | bp++; /* spare5 */ |
| 162 | bp++; /* spare6 */ |
| 163 | *_bp = bp; |
David Howells | ec26815 | 2007-04-26 15:49:28 -0700 | [diff] [blame] | 164 | } |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 165 | |
| 166 | /* |
David Howells | 31143d5 | 2007-05-09 02:33:46 -0700 | [diff] [blame] | 167 | * encode the requested attributes into an AFSStoreStatus block |
| 168 | */ |
| 169 | static void xdr_encode_AFS_StoreStatus(__be32 **_bp, struct iattr *attr) |
| 170 | { |
| 171 | __be32 *bp = *_bp; |
| 172 | u32 mask = 0, mtime = 0, owner = 0, group = 0, mode = 0; |
| 173 | |
| 174 | mask = 0; |
| 175 | if (attr->ia_valid & ATTR_MTIME) { |
| 176 | mask |= AFS_SET_MTIME; |
| 177 | mtime = attr->ia_mtime.tv_sec; |
| 178 | } |
| 179 | |
| 180 | if (attr->ia_valid & ATTR_UID) { |
| 181 | mask |= AFS_SET_OWNER; |
| 182 | owner = attr->ia_uid; |
| 183 | } |
| 184 | |
| 185 | if (attr->ia_valid & ATTR_GID) { |
| 186 | mask |= AFS_SET_GROUP; |
| 187 | group = attr->ia_gid; |
| 188 | } |
| 189 | |
| 190 | if (attr->ia_valid & ATTR_MODE) { |
| 191 | mask |= AFS_SET_MODE; |
| 192 | mode = attr->ia_mode & S_IALLUGO; |
| 193 | } |
| 194 | |
| 195 | *bp++ = htonl(mask); |
| 196 | *bp++ = htonl(mtime); |
| 197 | *bp++ = htonl(owner); |
| 198 | *bp++ = htonl(group); |
| 199 | *bp++ = htonl(mode); |
| 200 | *bp++ = 0; /* segment size */ |
| 201 | *_bp = bp; |
| 202 | } |
| 203 | |
| 204 | /* |
David Howells | 45222b9 | 2007-05-10 22:22:20 -0700 | [diff] [blame] | 205 | * decode an AFSFetchVolumeStatus block |
| 206 | */ |
| 207 | static void xdr_decode_AFSFetchVolumeStatus(const __be32 **_bp, |
| 208 | struct afs_volume_status *vs) |
| 209 | { |
| 210 | const __be32 *bp = *_bp; |
| 211 | |
| 212 | vs->vid = ntohl(*bp++); |
| 213 | vs->parent_id = ntohl(*bp++); |
| 214 | vs->online = ntohl(*bp++); |
| 215 | vs->in_service = ntohl(*bp++); |
| 216 | vs->blessed = ntohl(*bp++); |
| 217 | vs->needs_salvage = ntohl(*bp++); |
| 218 | vs->type = ntohl(*bp++); |
| 219 | vs->min_quota = ntohl(*bp++); |
| 220 | vs->max_quota = ntohl(*bp++); |
| 221 | vs->blocks_in_use = ntohl(*bp++); |
| 222 | vs->part_blocks_avail = ntohl(*bp++); |
| 223 | vs->part_max_blocks = ntohl(*bp++); |
| 224 | *_bp = bp; |
| 225 | } |
| 226 | |
| 227 | /* |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 228 | * deliver reply data to an FS.FetchStatus |
| 229 | */ |
| 230 | static int afs_deliver_fs_fetch_status(struct afs_call *call, |
| 231 | struct sk_buff *skb, bool last) |
| 232 | { |
David Howells | 260a980 | 2007-04-26 15:59:35 -0700 | [diff] [blame] | 233 | struct afs_vnode *vnode = call->reply; |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 234 | const __be32 *bp; |
| 235 | |
| 236 | _enter(",,%u", last); |
| 237 | |
| 238 | afs_transfer_reply(call, skb); |
| 239 | if (!last) |
| 240 | return 0; |
| 241 | |
| 242 | if (call->reply_size != call->reply_max) |
| 243 | return -EBADMSG; |
| 244 | |
| 245 | /* unmarshall the reply once we've received all of it */ |
| 246 | bp = call->buffer; |
David Howells | 31143d5 | 2007-05-09 02:33:46 -0700 | [diff] [blame] | 247 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); |
David Howells | 260a980 | 2007-04-26 15:59:35 -0700 | [diff] [blame] | 248 | xdr_decode_AFSCallBack(&bp, vnode); |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 249 | if (call->reply2) |
| 250 | xdr_decode_AFSVolSync(&bp, call->reply2); |
| 251 | |
| 252 | _leave(" = 0 [done]"); |
| 253 | return 0; |
| 254 | } |
| 255 | |
| 256 | /* |
| 257 | * FS.FetchStatus operation type |
| 258 | */ |
| 259 | static const struct afs_call_type afs_RXFSFetchStatus = { |
David Howells | 00d3b7a | 2007-04-26 15:57:07 -0700 | [diff] [blame] | 260 | .name = "FS.FetchStatus", |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 261 | .deliver = afs_deliver_fs_fetch_status, |
| 262 | .abort_to_error = afs_abort_to_error, |
| 263 | .destructor = afs_flat_call_destructor, |
| 264 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 265 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | /* |
| 267 | * fetch the status information for a file |
| 268 | */ |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 269 | int afs_fs_fetch_file_status(struct afs_server *server, |
David Howells | 00d3b7a | 2007-04-26 15:57:07 -0700 | [diff] [blame] | 270 | struct key *key, |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 271 | struct afs_vnode *vnode, |
| 272 | struct afs_volsync *volsync, |
| 273 | const struct afs_wait_mode *wait_mode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 274 | { |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 275 | struct afs_call *call; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 276 | __be32 *bp; |
| 277 | |
David Howells | 416351f | 2007-05-09 02:33:45 -0700 | [diff] [blame] | 278 | _enter(",%x,{%x:%u},,", |
David Howells | 260a980 | 2007-04-26 15:59:35 -0700 | [diff] [blame] | 279 | key_serial(key), vnode->fid.vid, vnode->fid.vnode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 280 | |
David Howells | 260a980 | 2007-04-26 15:59:35 -0700 | [diff] [blame] | 281 | call = afs_alloc_flat_call(&afs_RXFSFetchStatus, 16, (21 + 3 + 6) * 4); |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 282 | if (!call) |
| 283 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | |
David Howells | 00d3b7a | 2007-04-26 15:57:07 -0700 | [diff] [blame] | 285 | call->key = key; |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 286 | call->reply = vnode; |
| 287 | call->reply2 = volsync; |
| 288 | call->service_id = FS_SERVICE; |
| 289 | call->port = htons(AFS_FS_PORT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | |
| 291 | /* marshall the parameters */ |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 292 | bp = call->request; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | bp[0] = htonl(FSFETCHSTATUS); |
| 294 | bp[1] = htonl(vnode->fid.vid); |
| 295 | bp[2] = htonl(vnode->fid.vnode); |
| 296 | bp[3] = htonl(vnode->fid.unique); |
| 297 | |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 298 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); |
David Howells | ec26815 | 2007-04-26 15:49:28 -0700 | [diff] [blame] | 299 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 301 | /* |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 302 | * deliver reply data to an FS.FetchData |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | */ |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 304 | static int afs_deliver_fs_fetch_data(struct afs_call *call, |
| 305 | struct sk_buff *skb, bool last) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 306 | { |
David Howells | 260a980 | 2007-04-26 15:59:35 -0700 | [diff] [blame] | 307 | struct afs_vnode *vnode = call->reply; |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 308 | const __be32 *bp; |
| 309 | struct page *page; |
| 310 | void *buffer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 311 | int ret; |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 312 | |
| 313 | _enter("{%u},{%u},%d", call->unmarshall, skb->len, last); |
| 314 | |
| 315 | switch (call->unmarshall) { |
| 316 | case 0: |
| 317 | call->offset = 0; |
| 318 | call->unmarshall++; |
David Howells | b9b1f8d | 2007-05-10 03:15:21 -0700 | [diff] [blame] | 319 | if (call->operation_ID != FSFETCHDATA64) { |
| 320 | call->unmarshall++; |
| 321 | goto no_msw; |
| 322 | } |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 323 | |
David Howells | b9b1f8d | 2007-05-10 03:15:21 -0700 | [diff] [blame] | 324 | /* extract the upper part of the returned data length of an |
| 325 | * FSFETCHDATA64 op (which should always be 0 using this |
| 326 | * client) */ |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 327 | case 1: |
David Howells | b9b1f8d | 2007-05-10 03:15:21 -0700 | [diff] [blame] | 328 | _debug("extract data length (MSW)"); |
| 329 | ret = afs_extract_data(call, skb, last, &call->tmp, 4); |
| 330 | switch (ret) { |
| 331 | case 0: break; |
| 332 | case -EAGAIN: return 0; |
| 333 | default: return ret; |
| 334 | } |
| 335 | |
| 336 | call->count = ntohl(call->tmp); |
| 337 | _debug("DATA length MSW: %u", call->count); |
| 338 | if (call->count > 0) |
| 339 | return -EBADMSG; |
| 340 | call->offset = 0; |
| 341 | call->unmarshall++; |
| 342 | |
| 343 | no_msw: |
| 344 | /* extract the returned data length */ |
| 345 | case 2: |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 346 | _debug("extract data length"); |
| 347 | ret = afs_extract_data(call, skb, last, &call->tmp, 4); |
| 348 | switch (ret) { |
| 349 | case 0: break; |
| 350 | case -EAGAIN: return 0; |
| 351 | default: return ret; |
| 352 | } |
| 353 | |
| 354 | call->count = ntohl(call->tmp); |
| 355 | _debug("DATA length: %u", call->count); |
| 356 | if (call->count > PAGE_SIZE) |
| 357 | return -EBADMSG; |
| 358 | call->offset = 0; |
| 359 | call->unmarshall++; |
| 360 | |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 361 | /* extract the returned data */ |
David Howells | b9b1f8d | 2007-05-10 03:15:21 -0700 | [diff] [blame] | 362 | case 3: |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 363 | _debug("extract data"); |
David Howells | 416351f | 2007-05-09 02:33:45 -0700 | [diff] [blame] | 364 | if (call->count > 0) { |
| 365 | page = call->reply3; |
| 366 | buffer = kmap_atomic(page, KM_USER0); |
| 367 | ret = afs_extract_data(call, skb, last, buffer, |
| 368 | call->count); |
| 369 | kunmap_atomic(buffer, KM_USER0); |
| 370 | switch (ret) { |
| 371 | case 0: break; |
| 372 | case -EAGAIN: return 0; |
| 373 | default: return ret; |
| 374 | } |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 375 | } |
| 376 | |
| 377 | call->offset = 0; |
| 378 | call->unmarshall++; |
| 379 | |
| 380 | /* extract the metadata */ |
David Howells | b9b1f8d | 2007-05-10 03:15:21 -0700 | [diff] [blame] | 381 | case 4: |
David Howells | 260a980 | 2007-04-26 15:59:35 -0700 | [diff] [blame] | 382 | ret = afs_extract_data(call, skb, last, call->buffer, |
| 383 | (21 + 3 + 6) * 4); |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 384 | switch (ret) { |
| 385 | case 0: break; |
| 386 | case -EAGAIN: return 0; |
| 387 | default: return ret; |
| 388 | } |
| 389 | |
| 390 | bp = call->buffer; |
David Howells | 31143d5 | 2007-05-09 02:33:46 -0700 | [diff] [blame] | 391 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); |
David Howells | 260a980 | 2007-04-26 15:59:35 -0700 | [diff] [blame] | 392 | xdr_decode_AFSCallBack(&bp, vnode); |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 393 | if (call->reply2) |
| 394 | xdr_decode_AFSVolSync(&bp, call->reply2); |
| 395 | |
| 396 | call->offset = 0; |
| 397 | call->unmarshall++; |
| 398 | |
David Howells | b9b1f8d | 2007-05-10 03:15:21 -0700 | [diff] [blame] | 399 | case 5: |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 400 | _debug("trailer"); |
| 401 | if (skb->len != 0) |
| 402 | return -EBADMSG; |
| 403 | break; |
| 404 | } |
| 405 | |
| 406 | if (!last) |
| 407 | return 0; |
| 408 | |
David Howells | 416351f | 2007-05-09 02:33:45 -0700 | [diff] [blame] | 409 | if (call->count < PAGE_SIZE) { |
| 410 | _debug("clear"); |
| 411 | page = call->reply3; |
| 412 | buffer = kmap_atomic(page, KM_USER0); |
| 413 | memset(buffer + call->count, 0, PAGE_SIZE - call->count); |
| 414 | kunmap_atomic(buffer, KM_USER0); |
| 415 | } |
| 416 | |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 417 | _leave(" = 0 [done]"); |
| 418 | return 0; |
| 419 | } |
| 420 | |
| 421 | /* |
| 422 | * FS.FetchData operation type |
| 423 | */ |
| 424 | static const struct afs_call_type afs_RXFSFetchData = { |
David Howells | 00d3b7a | 2007-04-26 15:57:07 -0700 | [diff] [blame] | 425 | .name = "FS.FetchData", |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 426 | .deliver = afs_deliver_fs_fetch_data, |
| 427 | .abort_to_error = afs_abort_to_error, |
| 428 | .destructor = afs_flat_call_destructor, |
| 429 | }; |
| 430 | |
David Howells | b9b1f8d | 2007-05-10 03:15:21 -0700 | [diff] [blame] | 431 | static const struct afs_call_type afs_RXFSFetchData64 = { |
| 432 | .name = "FS.FetchData64", |
| 433 | .deliver = afs_deliver_fs_fetch_data, |
| 434 | .abort_to_error = afs_abort_to_error, |
| 435 | .destructor = afs_flat_call_destructor, |
| 436 | }; |
| 437 | |
| 438 | /* |
| 439 | * fetch data from a very large file |
| 440 | */ |
| 441 | static int afs_fs_fetch_data64(struct afs_server *server, |
| 442 | struct key *key, |
| 443 | struct afs_vnode *vnode, |
| 444 | off_t offset, size_t length, |
| 445 | struct page *buffer, |
| 446 | const struct afs_wait_mode *wait_mode) |
| 447 | { |
| 448 | struct afs_call *call; |
| 449 | __be32 *bp; |
| 450 | |
| 451 | _enter(""); |
| 452 | |
| 453 | ASSERTCMP(length, <, ULONG_MAX); |
| 454 | |
| 455 | call = afs_alloc_flat_call(&afs_RXFSFetchData64, 32, (21 + 3 + 6) * 4); |
| 456 | if (!call) |
| 457 | return -ENOMEM; |
| 458 | |
| 459 | call->key = key; |
| 460 | call->reply = vnode; |
| 461 | call->reply2 = NULL; /* volsync */ |
| 462 | call->reply3 = buffer; |
| 463 | call->service_id = FS_SERVICE; |
| 464 | call->port = htons(AFS_FS_PORT); |
| 465 | call->operation_ID = FSFETCHDATA64; |
| 466 | |
| 467 | /* marshall the parameters */ |
| 468 | bp = call->request; |
| 469 | bp[0] = htonl(FSFETCHDATA64); |
| 470 | bp[1] = htonl(vnode->fid.vid); |
| 471 | bp[2] = htonl(vnode->fid.vnode); |
| 472 | bp[3] = htonl(vnode->fid.unique); |
| 473 | bp[4] = htonl(upper_32_bits(offset)); |
| 474 | bp[5] = htonl((u32) offset); |
| 475 | bp[6] = 0; |
| 476 | bp[7] = htonl((u32) length); |
| 477 | |
| 478 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); |
| 479 | } |
| 480 | |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 481 | /* |
| 482 | * fetch data from a file |
| 483 | */ |
| 484 | int afs_fs_fetch_data(struct afs_server *server, |
David Howells | 00d3b7a | 2007-04-26 15:57:07 -0700 | [diff] [blame] | 485 | struct key *key, |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 486 | struct afs_vnode *vnode, |
| 487 | off_t offset, size_t length, |
| 488 | struct page *buffer, |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 489 | const struct afs_wait_mode *wait_mode) |
| 490 | { |
| 491 | struct afs_call *call; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 492 | __be32 *bp; |
| 493 | |
David Howells | b9b1f8d | 2007-05-10 03:15:21 -0700 | [diff] [blame] | 494 | if (upper_32_bits(offset) || upper_32_bits(offset + length)) |
| 495 | return afs_fs_fetch_data64(server, key, vnode, offset, length, |
| 496 | buffer, wait_mode); |
| 497 | |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 498 | _enter(""); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 499 | |
David Howells | 260a980 | 2007-04-26 15:59:35 -0700 | [diff] [blame] | 500 | call = afs_alloc_flat_call(&afs_RXFSFetchData, 24, (21 + 3 + 6) * 4); |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 501 | if (!call) |
| 502 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 503 | |
David Howells | 00d3b7a | 2007-04-26 15:57:07 -0700 | [diff] [blame] | 504 | call->key = key; |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 505 | call->reply = vnode; |
David Howells | 260a980 | 2007-04-26 15:59:35 -0700 | [diff] [blame] | 506 | call->reply2 = NULL; /* volsync */ |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 507 | call->reply3 = buffer; |
| 508 | call->service_id = FS_SERVICE; |
| 509 | call->port = htons(AFS_FS_PORT); |
David Howells | b9b1f8d | 2007-05-10 03:15:21 -0700 | [diff] [blame] | 510 | call->operation_ID = FSFETCHDATA; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 511 | |
| 512 | /* marshall the parameters */ |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 513 | bp = call->request; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 514 | bp[0] = htonl(FSFETCHDATA); |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 515 | bp[1] = htonl(vnode->fid.vid); |
| 516 | bp[2] = htonl(vnode->fid.vnode); |
| 517 | bp[3] = htonl(vnode->fid.unique); |
| 518 | bp[4] = htonl(offset); |
| 519 | bp[5] = htonl(length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 520 | |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 521 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); |
David Howells | ec26815 | 2007-04-26 15:49:28 -0700 | [diff] [blame] | 522 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 523 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 524 | /* |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 525 | * deliver reply data to an FS.GiveUpCallBacks |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 526 | */ |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 527 | static int afs_deliver_fs_give_up_callbacks(struct afs_call *call, |
| 528 | struct sk_buff *skb, bool last) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 529 | { |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 530 | _enter(",{%u},%d", skb->len, last); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 531 | |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 532 | if (skb->len > 0) |
| 533 | return -EBADMSG; /* shouldn't be any reply data */ |
| 534 | return 0; |
| 535 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 536 | |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 537 | /* |
| 538 | * FS.GiveUpCallBacks operation type |
| 539 | */ |
| 540 | static const struct afs_call_type afs_RXFSGiveUpCallBacks = { |
David Howells | 00d3b7a | 2007-04-26 15:57:07 -0700 | [diff] [blame] | 541 | .name = "FS.GiveUpCallBacks", |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 542 | .deliver = afs_deliver_fs_give_up_callbacks, |
| 543 | .abort_to_error = afs_abort_to_error, |
| 544 | .destructor = afs_flat_call_destructor, |
| 545 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 546 | |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 547 | /* |
| 548 | * give up a set of callbacks |
| 549 | * - the callbacks are held in the server->cb_break ring |
| 550 | */ |
| 551 | int afs_fs_give_up_callbacks(struct afs_server *server, |
| 552 | const struct afs_wait_mode *wait_mode) |
| 553 | { |
| 554 | struct afs_call *call; |
| 555 | size_t ncallbacks; |
| 556 | __be32 *bp, *tp; |
| 557 | int loop; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 558 | |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 559 | ncallbacks = CIRC_CNT(server->cb_break_head, server->cb_break_tail, |
| 560 | ARRAY_SIZE(server->cb_break)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 561 | |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 562 | _enter("{%zu},", ncallbacks); |
| 563 | |
| 564 | if (ncallbacks == 0) |
| 565 | return 0; |
| 566 | if (ncallbacks > AFSCBMAX) |
| 567 | ncallbacks = AFSCBMAX; |
| 568 | |
| 569 | _debug("break %zu callbacks", ncallbacks); |
| 570 | |
| 571 | call = afs_alloc_flat_call(&afs_RXFSGiveUpCallBacks, |
| 572 | 12 + ncallbacks * 6 * 4, 0); |
| 573 | if (!call) |
| 574 | return -ENOMEM; |
| 575 | |
| 576 | call->service_id = FS_SERVICE; |
| 577 | call->port = htons(AFS_FS_PORT); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 578 | |
| 579 | /* marshall the parameters */ |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 580 | bp = call->request; |
| 581 | tp = bp + 2 + ncallbacks * 3; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 582 | *bp++ = htonl(FSGIVEUPCALLBACKS); |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 583 | *bp++ = htonl(ncallbacks); |
| 584 | *tp++ = htonl(ncallbacks); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 585 | |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 586 | atomic_sub(ncallbacks, &server->cb_break_n); |
| 587 | for (loop = ncallbacks; loop > 0; loop--) { |
| 588 | struct afs_callback *cb = |
| 589 | &server->cb_break[server->cb_break_tail]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 590 | |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 591 | *bp++ = htonl(cb->fid.vid); |
| 592 | *bp++ = htonl(cb->fid.vnode); |
| 593 | *bp++ = htonl(cb->fid.unique); |
| 594 | *tp++ = htonl(cb->version); |
| 595 | *tp++ = htonl(cb->expiry); |
| 596 | *tp++ = htonl(cb->type); |
| 597 | smp_mb(); |
| 598 | server->cb_break_tail = |
| 599 | (server->cb_break_tail + 1) & |
| 600 | (ARRAY_SIZE(server->cb_break) - 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 601 | } |
| 602 | |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 603 | ASSERT(ncallbacks > 0); |
| 604 | wake_up_nr(&server->cb_break_waitq, ncallbacks); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 605 | |
David Howells | 08e0e7c | 2007-04-26 15:55:03 -0700 | [diff] [blame] | 606 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); |
David Howells | ec26815 | 2007-04-26 15:49:28 -0700 | [diff] [blame] | 607 | } |
David Howells | 260a980 | 2007-04-26 15:59:35 -0700 | [diff] [blame] | 608 | |
| 609 | /* |
| 610 | * deliver reply data to an FS.CreateFile or an FS.MakeDir |
| 611 | */ |
| 612 | static int afs_deliver_fs_create_vnode(struct afs_call *call, |
| 613 | struct sk_buff *skb, bool last) |
| 614 | { |
| 615 | struct afs_vnode *vnode = call->reply; |
| 616 | const __be32 *bp; |
| 617 | |
| 618 | _enter("{%u},{%u},%d", call->unmarshall, skb->len, last); |
| 619 | |
| 620 | afs_transfer_reply(call, skb); |
| 621 | if (!last) |
| 622 | return 0; |
| 623 | |
| 624 | if (call->reply_size != call->reply_max) |
| 625 | return -EBADMSG; |
| 626 | |
| 627 | /* unmarshall the reply once we've received all of it */ |
| 628 | bp = call->buffer; |
| 629 | xdr_decode_AFSFid(&bp, call->reply2); |
David Howells | 31143d5 | 2007-05-09 02:33:46 -0700 | [diff] [blame] | 630 | xdr_decode_AFSFetchStatus(&bp, call->reply3, NULL, NULL); |
| 631 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); |
David Howells | 260a980 | 2007-04-26 15:59:35 -0700 | [diff] [blame] | 632 | xdr_decode_AFSCallBack_raw(&bp, call->reply4); |
| 633 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ |
| 634 | |
| 635 | _leave(" = 0 [done]"); |
| 636 | return 0; |
| 637 | } |
| 638 | |
| 639 | /* |
| 640 | * FS.CreateFile and FS.MakeDir operation type |
| 641 | */ |
| 642 | static const struct afs_call_type afs_RXFSCreateXXXX = { |
| 643 | .name = "FS.CreateXXXX", |
| 644 | .deliver = afs_deliver_fs_create_vnode, |
| 645 | .abort_to_error = afs_abort_to_error, |
| 646 | .destructor = afs_flat_call_destructor, |
| 647 | }; |
| 648 | |
| 649 | /* |
| 650 | * create a file or make a directory |
| 651 | */ |
| 652 | int afs_fs_create(struct afs_server *server, |
| 653 | struct key *key, |
| 654 | struct afs_vnode *vnode, |
| 655 | const char *name, |
| 656 | umode_t mode, |
| 657 | struct afs_fid *newfid, |
| 658 | struct afs_file_status *newstatus, |
| 659 | struct afs_callback *newcb, |
| 660 | const struct afs_wait_mode *wait_mode) |
| 661 | { |
| 662 | struct afs_call *call; |
| 663 | size_t namesz, reqsz, padsz; |
| 664 | __be32 *bp; |
| 665 | |
| 666 | _enter(""); |
| 667 | |
| 668 | namesz = strlen(name); |
| 669 | padsz = (4 - (namesz & 3)) & 3; |
| 670 | reqsz = (5 * 4) + namesz + padsz + (6 * 4); |
| 671 | |
| 672 | call = afs_alloc_flat_call(&afs_RXFSCreateXXXX, reqsz, |
| 673 | (3 + 21 + 21 + 3 + 6) * 4); |
| 674 | if (!call) |
| 675 | return -ENOMEM; |
| 676 | |
| 677 | call->key = key; |
| 678 | call->reply = vnode; |
| 679 | call->reply2 = newfid; |
| 680 | call->reply3 = newstatus; |
| 681 | call->reply4 = newcb; |
| 682 | call->service_id = FS_SERVICE; |
| 683 | call->port = htons(AFS_FS_PORT); |
| 684 | |
| 685 | /* marshall the parameters */ |
| 686 | bp = call->request; |
| 687 | *bp++ = htonl(S_ISDIR(mode) ? FSMAKEDIR : FSCREATEFILE); |
| 688 | *bp++ = htonl(vnode->fid.vid); |
| 689 | *bp++ = htonl(vnode->fid.vnode); |
| 690 | *bp++ = htonl(vnode->fid.unique); |
| 691 | *bp++ = htonl(namesz); |
| 692 | memcpy(bp, name, namesz); |
| 693 | bp = (void *) bp + namesz; |
| 694 | if (padsz > 0) { |
| 695 | memset(bp, 0, padsz); |
| 696 | bp = (void *) bp + padsz; |
| 697 | } |
| 698 | *bp++ = htonl(AFS_SET_MODE); |
| 699 | *bp++ = 0; /* mtime */ |
| 700 | *bp++ = 0; /* owner */ |
| 701 | *bp++ = 0; /* group */ |
| 702 | *bp++ = htonl(mode & S_IALLUGO); /* unix mode */ |
| 703 | *bp++ = 0; /* segment size */ |
| 704 | |
| 705 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); |
| 706 | } |
| 707 | |
| 708 | /* |
| 709 | * deliver reply data to an FS.RemoveFile or FS.RemoveDir |
| 710 | */ |
| 711 | static int afs_deliver_fs_remove(struct afs_call *call, |
| 712 | struct sk_buff *skb, bool last) |
| 713 | { |
| 714 | struct afs_vnode *vnode = call->reply; |
| 715 | const __be32 *bp; |
| 716 | |
| 717 | _enter("{%u},{%u},%d", call->unmarshall, skb->len, last); |
| 718 | |
| 719 | afs_transfer_reply(call, skb); |
| 720 | if (!last) |
| 721 | return 0; |
| 722 | |
| 723 | if (call->reply_size != call->reply_max) |
| 724 | return -EBADMSG; |
| 725 | |
| 726 | /* unmarshall the reply once we've received all of it */ |
| 727 | bp = call->buffer; |
David Howells | 31143d5 | 2007-05-09 02:33:46 -0700 | [diff] [blame] | 728 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); |
David Howells | 260a980 | 2007-04-26 15:59:35 -0700 | [diff] [blame] | 729 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ |
| 730 | |
| 731 | _leave(" = 0 [done]"); |
| 732 | return 0; |
| 733 | } |
| 734 | |
| 735 | /* |
| 736 | * FS.RemoveDir/FS.RemoveFile operation type |
| 737 | */ |
| 738 | static const struct afs_call_type afs_RXFSRemoveXXXX = { |
| 739 | .name = "FS.RemoveXXXX", |
| 740 | .deliver = afs_deliver_fs_remove, |
| 741 | .abort_to_error = afs_abort_to_error, |
| 742 | .destructor = afs_flat_call_destructor, |
| 743 | }; |
| 744 | |
| 745 | /* |
| 746 | * remove a file or directory |
| 747 | */ |
| 748 | int afs_fs_remove(struct afs_server *server, |
| 749 | struct key *key, |
| 750 | struct afs_vnode *vnode, |
| 751 | const char *name, |
| 752 | bool isdir, |
| 753 | const struct afs_wait_mode *wait_mode) |
| 754 | { |
| 755 | struct afs_call *call; |
| 756 | size_t namesz, reqsz, padsz; |
| 757 | __be32 *bp; |
| 758 | |
| 759 | _enter(""); |
| 760 | |
| 761 | namesz = strlen(name); |
| 762 | padsz = (4 - (namesz & 3)) & 3; |
| 763 | reqsz = (5 * 4) + namesz + padsz; |
| 764 | |
| 765 | call = afs_alloc_flat_call(&afs_RXFSRemoveXXXX, reqsz, (21 + 6) * 4); |
| 766 | if (!call) |
| 767 | return -ENOMEM; |
| 768 | |
| 769 | call->key = key; |
| 770 | call->reply = vnode; |
| 771 | call->service_id = FS_SERVICE; |
| 772 | call->port = htons(AFS_FS_PORT); |
| 773 | |
| 774 | /* marshall the parameters */ |
| 775 | bp = call->request; |
| 776 | *bp++ = htonl(isdir ? FSREMOVEDIR : FSREMOVEFILE); |
| 777 | *bp++ = htonl(vnode->fid.vid); |
| 778 | *bp++ = htonl(vnode->fid.vnode); |
| 779 | *bp++ = htonl(vnode->fid.unique); |
| 780 | *bp++ = htonl(namesz); |
| 781 | memcpy(bp, name, namesz); |
| 782 | bp = (void *) bp + namesz; |
| 783 | if (padsz > 0) { |
| 784 | memset(bp, 0, padsz); |
| 785 | bp = (void *) bp + padsz; |
| 786 | } |
| 787 | |
| 788 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); |
| 789 | } |
| 790 | |
| 791 | /* |
| 792 | * deliver reply data to an FS.Link |
| 793 | */ |
| 794 | static int afs_deliver_fs_link(struct afs_call *call, |
| 795 | struct sk_buff *skb, bool last) |
| 796 | { |
| 797 | struct afs_vnode *dvnode = call->reply, *vnode = call->reply2; |
| 798 | const __be32 *bp; |
| 799 | |
| 800 | _enter("{%u},{%u},%d", call->unmarshall, skb->len, last); |
| 801 | |
| 802 | afs_transfer_reply(call, skb); |
| 803 | if (!last) |
| 804 | return 0; |
| 805 | |
| 806 | if (call->reply_size != call->reply_max) |
| 807 | return -EBADMSG; |
| 808 | |
| 809 | /* unmarshall the reply once we've received all of it */ |
| 810 | bp = call->buffer; |
David Howells | 31143d5 | 2007-05-09 02:33:46 -0700 | [diff] [blame] | 811 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); |
| 812 | xdr_decode_AFSFetchStatus(&bp, &dvnode->status, dvnode, NULL); |
David Howells | 260a980 | 2007-04-26 15:59:35 -0700 | [diff] [blame] | 813 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ |
| 814 | |
| 815 | _leave(" = 0 [done]"); |
| 816 | return 0; |
| 817 | } |
| 818 | |
| 819 | /* |
| 820 | * FS.Link operation type |
| 821 | */ |
| 822 | static const struct afs_call_type afs_RXFSLink = { |
| 823 | .name = "FS.Link", |
| 824 | .deliver = afs_deliver_fs_link, |
| 825 | .abort_to_error = afs_abort_to_error, |
| 826 | .destructor = afs_flat_call_destructor, |
| 827 | }; |
| 828 | |
| 829 | /* |
| 830 | * make a hard link |
| 831 | */ |
| 832 | int afs_fs_link(struct afs_server *server, |
| 833 | struct key *key, |
| 834 | struct afs_vnode *dvnode, |
| 835 | struct afs_vnode *vnode, |
| 836 | const char *name, |
| 837 | const struct afs_wait_mode *wait_mode) |
| 838 | { |
| 839 | struct afs_call *call; |
| 840 | size_t namesz, reqsz, padsz; |
| 841 | __be32 *bp; |
| 842 | |
| 843 | _enter(""); |
| 844 | |
| 845 | namesz = strlen(name); |
| 846 | padsz = (4 - (namesz & 3)) & 3; |
| 847 | reqsz = (5 * 4) + namesz + padsz + (3 * 4); |
| 848 | |
| 849 | call = afs_alloc_flat_call(&afs_RXFSLink, reqsz, (21 + 21 + 6) * 4); |
| 850 | if (!call) |
| 851 | return -ENOMEM; |
| 852 | |
| 853 | call->key = key; |
| 854 | call->reply = dvnode; |
| 855 | call->reply2 = vnode; |
| 856 | call->service_id = FS_SERVICE; |
| 857 | call->port = htons(AFS_FS_PORT); |
| 858 | |
| 859 | /* marshall the parameters */ |
| 860 | bp = call->request; |
| 861 | *bp++ = htonl(FSLINK); |
| 862 | *bp++ = htonl(dvnode->fid.vid); |
| 863 | *bp++ = htonl(dvnode->fid.vnode); |
| 864 | *bp++ = htonl(dvnode->fid.unique); |
| 865 | *bp++ = htonl(namesz); |
| 866 | memcpy(bp, name, namesz); |
| 867 | bp = (void *) bp + namesz; |
| 868 | if (padsz > 0) { |
| 869 | memset(bp, 0, padsz); |
| 870 | bp = (void *) bp + padsz; |
| 871 | } |
| 872 | *bp++ = htonl(vnode->fid.vid); |
| 873 | *bp++ = htonl(vnode->fid.vnode); |
| 874 | *bp++ = htonl(vnode->fid.unique); |
| 875 | |
| 876 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); |
| 877 | } |
| 878 | |
| 879 | /* |
| 880 | * deliver reply data to an FS.Symlink |
| 881 | */ |
| 882 | static int afs_deliver_fs_symlink(struct afs_call *call, |
| 883 | struct sk_buff *skb, bool last) |
| 884 | { |
| 885 | struct afs_vnode *vnode = call->reply; |
| 886 | const __be32 *bp; |
| 887 | |
| 888 | _enter("{%u},{%u},%d", call->unmarshall, skb->len, last); |
| 889 | |
| 890 | afs_transfer_reply(call, skb); |
| 891 | if (!last) |
| 892 | return 0; |
| 893 | |
| 894 | if (call->reply_size != call->reply_max) |
| 895 | return -EBADMSG; |
| 896 | |
| 897 | /* unmarshall the reply once we've received all of it */ |
| 898 | bp = call->buffer; |
| 899 | xdr_decode_AFSFid(&bp, call->reply2); |
David Howells | 31143d5 | 2007-05-09 02:33:46 -0700 | [diff] [blame] | 900 | xdr_decode_AFSFetchStatus(&bp, call->reply3, NULL, NULL); |
| 901 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, NULL); |
David Howells | 260a980 | 2007-04-26 15:59:35 -0700 | [diff] [blame] | 902 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ |
| 903 | |
| 904 | _leave(" = 0 [done]"); |
| 905 | return 0; |
| 906 | } |
| 907 | |
| 908 | /* |
| 909 | * FS.Symlink operation type |
| 910 | */ |
| 911 | static const struct afs_call_type afs_RXFSSymlink = { |
| 912 | .name = "FS.Symlink", |
| 913 | .deliver = afs_deliver_fs_symlink, |
| 914 | .abort_to_error = afs_abort_to_error, |
| 915 | .destructor = afs_flat_call_destructor, |
| 916 | }; |
| 917 | |
| 918 | /* |
| 919 | * create a symbolic link |
| 920 | */ |
| 921 | int afs_fs_symlink(struct afs_server *server, |
| 922 | struct key *key, |
| 923 | struct afs_vnode *vnode, |
| 924 | const char *name, |
| 925 | const char *contents, |
| 926 | struct afs_fid *newfid, |
| 927 | struct afs_file_status *newstatus, |
| 928 | const struct afs_wait_mode *wait_mode) |
| 929 | { |
| 930 | struct afs_call *call; |
| 931 | size_t namesz, reqsz, padsz, c_namesz, c_padsz; |
| 932 | __be32 *bp; |
| 933 | |
| 934 | _enter(""); |
| 935 | |
| 936 | namesz = strlen(name); |
| 937 | padsz = (4 - (namesz & 3)) & 3; |
| 938 | |
| 939 | c_namesz = strlen(contents); |
| 940 | c_padsz = (4 - (c_namesz & 3)) & 3; |
| 941 | |
| 942 | reqsz = (6 * 4) + namesz + padsz + c_namesz + c_padsz + (6 * 4); |
| 943 | |
| 944 | call = afs_alloc_flat_call(&afs_RXFSSymlink, reqsz, |
| 945 | (3 + 21 + 21 + 6) * 4); |
| 946 | if (!call) |
| 947 | return -ENOMEM; |
| 948 | |
| 949 | call->key = key; |
| 950 | call->reply = vnode; |
| 951 | call->reply2 = newfid; |
| 952 | call->reply3 = newstatus; |
| 953 | call->service_id = FS_SERVICE; |
| 954 | call->port = htons(AFS_FS_PORT); |
| 955 | |
| 956 | /* marshall the parameters */ |
| 957 | bp = call->request; |
| 958 | *bp++ = htonl(FSSYMLINK); |
| 959 | *bp++ = htonl(vnode->fid.vid); |
| 960 | *bp++ = htonl(vnode->fid.vnode); |
| 961 | *bp++ = htonl(vnode->fid.unique); |
| 962 | *bp++ = htonl(namesz); |
| 963 | memcpy(bp, name, namesz); |
| 964 | bp = (void *) bp + namesz; |
| 965 | if (padsz > 0) { |
| 966 | memset(bp, 0, padsz); |
| 967 | bp = (void *) bp + padsz; |
| 968 | } |
| 969 | *bp++ = htonl(c_namesz); |
| 970 | memcpy(bp, contents, c_namesz); |
| 971 | bp = (void *) bp + c_namesz; |
| 972 | if (c_padsz > 0) { |
| 973 | memset(bp, 0, c_padsz); |
| 974 | bp = (void *) bp + c_padsz; |
| 975 | } |
| 976 | *bp++ = htonl(AFS_SET_MODE); |
| 977 | *bp++ = 0; /* mtime */ |
| 978 | *bp++ = 0; /* owner */ |
| 979 | *bp++ = 0; /* group */ |
| 980 | *bp++ = htonl(S_IRWXUGO); /* unix mode */ |
| 981 | *bp++ = 0; /* segment size */ |
| 982 | |
| 983 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); |
| 984 | } |
| 985 | |
| 986 | /* |
| 987 | * deliver reply data to an FS.Rename |
| 988 | */ |
| 989 | static int afs_deliver_fs_rename(struct afs_call *call, |
| 990 | struct sk_buff *skb, bool last) |
| 991 | { |
| 992 | struct afs_vnode *orig_dvnode = call->reply, *new_dvnode = call->reply2; |
| 993 | const __be32 *bp; |
| 994 | |
| 995 | _enter("{%u},{%u},%d", call->unmarshall, skb->len, last); |
| 996 | |
| 997 | afs_transfer_reply(call, skb); |
| 998 | if (!last) |
| 999 | return 0; |
| 1000 | |
| 1001 | if (call->reply_size != call->reply_max) |
| 1002 | return -EBADMSG; |
| 1003 | |
| 1004 | /* unmarshall the reply once we've received all of it */ |
| 1005 | bp = call->buffer; |
David Howells | 31143d5 | 2007-05-09 02:33:46 -0700 | [diff] [blame] | 1006 | xdr_decode_AFSFetchStatus(&bp, &orig_dvnode->status, orig_dvnode, NULL); |
David Howells | 260a980 | 2007-04-26 15:59:35 -0700 | [diff] [blame] | 1007 | if (new_dvnode != orig_dvnode) |
David Howells | 31143d5 | 2007-05-09 02:33:46 -0700 | [diff] [blame] | 1008 | xdr_decode_AFSFetchStatus(&bp, &new_dvnode->status, new_dvnode, |
| 1009 | NULL); |
David Howells | 260a980 | 2007-04-26 15:59:35 -0700 | [diff] [blame] | 1010 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ |
| 1011 | |
| 1012 | _leave(" = 0 [done]"); |
| 1013 | return 0; |
| 1014 | } |
| 1015 | |
| 1016 | /* |
| 1017 | * FS.Rename operation type |
| 1018 | */ |
| 1019 | static const struct afs_call_type afs_RXFSRename = { |
| 1020 | .name = "FS.Rename", |
| 1021 | .deliver = afs_deliver_fs_rename, |
| 1022 | .abort_to_error = afs_abort_to_error, |
| 1023 | .destructor = afs_flat_call_destructor, |
| 1024 | }; |
| 1025 | |
| 1026 | /* |
| 1027 | * create a symbolic link |
| 1028 | */ |
| 1029 | int afs_fs_rename(struct afs_server *server, |
| 1030 | struct key *key, |
| 1031 | struct afs_vnode *orig_dvnode, |
| 1032 | const char *orig_name, |
| 1033 | struct afs_vnode *new_dvnode, |
| 1034 | const char *new_name, |
| 1035 | const struct afs_wait_mode *wait_mode) |
| 1036 | { |
| 1037 | struct afs_call *call; |
| 1038 | size_t reqsz, o_namesz, o_padsz, n_namesz, n_padsz; |
| 1039 | __be32 *bp; |
| 1040 | |
| 1041 | _enter(""); |
| 1042 | |
| 1043 | o_namesz = strlen(orig_name); |
| 1044 | o_padsz = (4 - (o_namesz & 3)) & 3; |
| 1045 | |
| 1046 | n_namesz = strlen(new_name); |
| 1047 | n_padsz = (4 - (n_namesz & 3)) & 3; |
| 1048 | |
| 1049 | reqsz = (4 * 4) + |
| 1050 | 4 + o_namesz + o_padsz + |
| 1051 | (3 * 4) + |
| 1052 | 4 + n_namesz + n_padsz; |
| 1053 | |
| 1054 | call = afs_alloc_flat_call(&afs_RXFSRename, reqsz, (21 + 21 + 6) * 4); |
| 1055 | if (!call) |
| 1056 | return -ENOMEM; |
| 1057 | |
| 1058 | call->key = key; |
| 1059 | call->reply = orig_dvnode; |
| 1060 | call->reply2 = new_dvnode; |
| 1061 | call->service_id = FS_SERVICE; |
| 1062 | call->port = htons(AFS_FS_PORT); |
| 1063 | |
| 1064 | /* marshall the parameters */ |
| 1065 | bp = call->request; |
| 1066 | *bp++ = htonl(FSRENAME); |
| 1067 | *bp++ = htonl(orig_dvnode->fid.vid); |
| 1068 | *bp++ = htonl(orig_dvnode->fid.vnode); |
| 1069 | *bp++ = htonl(orig_dvnode->fid.unique); |
| 1070 | *bp++ = htonl(o_namesz); |
| 1071 | memcpy(bp, orig_name, o_namesz); |
| 1072 | bp = (void *) bp + o_namesz; |
| 1073 | if (o_padsz > 0) { |
| 1074 | memset(bp, 0, o_padsz); |
| 1075 | bp = (void *) bp + o_padsz; |
| 1076 | } |
| 1077 | |
| 1078 | *bp++ = htonl(new_dvnode->fid.vid); |
| 1079 | *bp++ = htonl(new_dvnode->fid.vnode); |
| 1080 | *bp++ = htonl(new_dvnode->fid.unique); |
| 1081 | *bp++ = htonl(n_namesz); |
| 1082 | memcpy(bp, new_name, n_namesz); |
| 1083 | bp = (void *) bp + n_namesz; |
| 1084 | if (n_padsz > 0) { |
| 1085 | memset(bp, 0, n_padsz); |
| 1086 | bp = (void *) bp + n_padsz; |
| 1087 | } |
| 1088 | |
| 1089 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); |
| 1090 | } |
David Howells | 31143d5 | 2007-05-09 02:33:46 -0700 | [diff] [blame] | 1091 | |
| 1092 | /* |
| 1093 | * deliver reply data to an FS.StoreData |
| 1094 | */ |
| 1095 | static int afs_deliver_fs_store_data(struct afs_call *call, |
| 1096 | struct sk_buff *skb, bool last) |
| 1097 | { |
| 1098 | struct afs_vnode *vnode = call->reply; |
| 1099 | const __be32 *bp; |
| 1100 | |
| 1101 | _enter(",,%u", last); |
| 1102 | |
| 1103 | afs_transfer_reply(call, skb); |
| 1104 | if (!last) { |
| 1105 | _leave(" = 0 [more]"); |
| 1106 | return 0; |
| 1107 | } |
| 1108 | |
| 1109 | if (call->reply_size != call->reply_max) { |
| 1110 | _leave(" = -EBADMSG [%u != %u]", |
| 1111 | call->reply_size, call->reply_max); |
| 1112 | return -EBADMSG; |
| 1113 | } |
| 1114 | |
| 1115 | /* unmarshall the reply once we've received all of it */ |
| 1116 | bp = call->buffer; |
| 1117 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, |
| 1118 | &call->store_version); |
| 1119 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ |
| 1120 | |
| 1121 | afs_pages_written_back(vnode, call); |
| 1122 | |
| 1123 | _leave(" = 0 [done]"); |
| 1124 | return 0; |
| 1125 | } |
| 1126 | |
| 1127 | /* |
| 1128 | * FS.StoreData operation type |
| 1129 | */ |
| 1130 | static const struct afs_call_type afs_RXFSStoreData = { |
| 1131 | .name = "FS.StoreData", |
| 1132 | .deliver = afs_deliver_fs_store_data, |
| 1133 | .abort_to_error = afs_abort_to_error, |
| 1134 | .destructor = afs_flat_call_destructor, |
| 1135 | }; |
| 1136 | |
David Howells | b9b1f8d | 2007-05-10 03:15:21 -0700 | [diff] [blame] | 1137 | static const struct afs_call_type afs_RXFSStoreData64 = { |
| 1138 | .name = "FS.StoreData64", |
| 1139 | .deliver = afs_deliver_fs_store_data, |
| 1140 | .abort_to_error = afs_abort_to_error, |
| 1141 | .destructor = afs_flat_call_destructor, |
| 1142 | }; |
| 1143 | |
| 1144 | /* |
| 1145 | * store a set of pages to a very large file |
| 1146 | */ |
| 1147 | static int afs_fs_store_data64(struct afs_server *server, |
| 1148 | struct afs_writeback *wb, |
| 1149 | pgoff_t first, pgoff_t last, |
| 1150 | unsigned offset, unsigned to, |
| 1151 | loff_t size, loff_t pos, loff_t i_size, |
| 1152 | const struct afs_wait_mode *wait_mode) |
| 1153 | { |
| 1154 | struct afs_vnode *vnode = wb->vnode; |
| 1155 | struct afs_call *call; |
| 1156 | __be32 *bp; |
| 1157 | |
| 1158 | _enter(",%x,{%x:%u},,", |
| 1159 | key_serial(wb->key), vnode->fid.vid, vnode->fid.vnode); |
| 1160 | |
| 1161 | call = afs_alloc_flat_call(&afs_RXFSStoreData64, |
| 1162 | (4 + 6 + 3 * 2) * 4, |
| 1163 | (21 + 6) * 4); |
| 1164 | if (!call) |
| 1165 | return -ENOMEM; |
| 1166 | |
| 1167 | call->wb = wb; |
| 1168 | call->key = wb->key; |
| 1169 | call->reply = vnode; |
| 1170 | call->service_id = FS_SERVICE; |
| 1171 | call->port = htons(AFS_FS_PORT); |
| 1172 | call->mapping = vnode->vfs_inode.i_mapping; |
| 1173 | call->first = first; |
| 1174 | call->last = last; |
| 1175 | call->first_offset = offset; |
| 1176 | call->last_to = to; |
| 1177 | call->send_pages = true; |
| 1178 | call->store_version = vnode->status.data_version + 1; |
| 1179 | |
| 1180 | /* marshall the parameters */ |
| 1181 | bp = call->request; |
| 1182 | *bp++ = htonl(FSSTOREDATA64); |
| 1183 | *bp++ = htonl(vnode->fid.vid); |
| 1184 | *bp++ = htonl(vnode->fid.vnode); |
| 1185 | *bp++ = htonl(vnode->fid.unique); |
| 1186 | |
| 1187 | *bp++ = 0; /* mask */ |
| 1188 | *bp++ = 0; /* mtime */ |
| 1189 | *bp++ = 0; /* owner */ |
| 1190 | *bp++ = 0; /* group */ |
| 1191 | *bp++ = 0; /* unix mode */ |
| 1192 | *bp++ = 0; /* segment size */ |
| 1193 | |
| 1194 | *bp++ = htonl(pos >> 32); |
| 1195 | *bp++ = htonl((u32) pos); |
| 1196 | *bp++ = htonl(size >> 32); |
| 1197 | *bp++ = htonl((u32) size); |
| 1198 | *bp++ = htonl(i_size >> 32); |
| 1199 | *bp++ = htonl((u32) i_size); |
| 1200 | |
| 1201 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); |
| 1202 | } |
| 1203 | |
David Howells | 31143d5 | 2007-05-09 02:33:46 -0700 | [diff] [blame] | 1204 | /* |
| 1205 | * store a set of pages |
| 1206 | */ |
| 1207 | int afs_fs_store_data(struct afs_server *server, struct afs_writeback *wb, |
| 1208 | pgoff_t first, pgoff_t last, |
| 1209 | unsigned offset, unsigned to, |
| 1210 | const struct afs_wait_mode *wait_mode) |
| 1211 | { |
| 1212 | struct afs_vnode *vnode = wb->vnode; |
| 1213 | struct afs_call *call; |
| 1214 | loff_t size, pos, i_size; |
| 1215 | __be32 *bp; |
| 1216 | |
| 1217 | _enter(",%x,{%x:%u},,", |
| 1218 | key_serial(wb->key), vnode->fid.vid, vnode->fid.vnode); |
| 1219 | |
| 1220 | size = to - offset; |
| 1221 | if (first != last) |
| 1222 | size += (loff_t)(last - first) << PAGE_SHIFT; |
| 1223 | pos = (loff_t)first << PAGE_SHIFT; |
| 1224 | pos += offset; |
| 1225 | |
| 1226 | i_size = i_size_read(&vnode->vfs_inode); |
| 1227 | if (pos + size > i_size) |
| 1228 | i_size = size + pos; |
| 1229 | |
| 1230 | _debug("size %llx, at %llx, i_size %llx", |
| 1231 | (unsigned long long) size, (unsigned long long) pos, |
| 1232 | (unsigned long long) i_size); |
| 1233 | |
David Howells | b9b1f8d | 2007-05-10 03:15:21 -0700 | [diff] [blame] | 1234 | if (pos >> 32 || i_size >> 32 || size >> 32 || (pos + size) >> 32) |
| 1235 | return afs_fs_store_data64(server, wb, first, last, offset, to, |
| 1236 | size, pos, i_size, wait_mode); |
David Howells | 31143d5 | 2007-05-09 02:33:46 -0700 | [diff] [blame] | 1237 | |
| 1238 | call = afs_alloc_flat_call(&afs_RXFSStoreData, |
| 1239 | (4 + 6 + 3) * 4, |
| 1240 | (21 + 6) * 4); |
| 1241 | if (!call) |
| 1242 | return -ENOMEM; |
| 1243 | |
| 1244 | call->wb = wb; |
| 1245 | call->key = wb->key; |
| 1246 | call->reply = vnode; |
| 1247 | call->service_id = FS_SERVICE; |
| 1248 | call->port = htons(AFS_FS_PORT); |
| 1249 | call->mapping = vnode->vfs_inode.i_mapping; |
| 1250 | call->first = first; |
| 1251 | call->last = last; |
| 1252 | call->first_offset = offset; |
| 1253 | call->last_to = to; |
| 1254 | call->send_pages = true; |
| 1255 | call->store_version = vnode->status.data_version + 1; |
| 1256 | |
| 1257 | /* marshall the parameters */ |
| 1258 | bp = call->request; |
| 1259 | *bp++ = htonl(FSSTOREDATA); |
| 1260 | *bp++ = htonl(vnode->fid.vid); |
| 1261 | *bp++ = htonl(vnode->fid.vnode); |
| 1262 | *bp++ = htonl(vnode->fid.unique); |
| 1263 | |
| 1264 | *bp++ = 0; /* mask */ |
| 1265 | *bp++ = 0; /* mtime */ |
| 1266 | *bp++ = 0; /* owner */ |
| 1267 | *bp++ = 0; /* group */ |
| 1268 | *bp++ = 0; /* unix mode */ |
| 1269 | *bp++ = 0; /* segment size */ |
| 1270 | |
| 1271 | *bp++ = htonl(pos); |
| 1272 | *bp++ = htonl(size); |
| 1273 | *bp++ = htonl(i_size); |
| 1274 | |
| 1275 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); |
| 1276 | } |
| 1277 | |
| 1278 | /* |
| 1279 | * deliver reply data to an FS.StoreStatus |
| 1280 | */ |
| 1281 | static int afs_deliver_fs_store_status(struct afs_call *call, |
| 1282 | struct sk_buff *skb, bool last) |
| 1283 | { |
| 1284 | afs_dataversion_t *store_version; |
| 1285 | struct afs_vnode *vnode = call->reply; |
| 1286 | const __be32 *bp; |
| 1287 | |
| 1288 | _enter(",,%u", last); |
| 1289 | |
| 1290 | afs_transfer_reply(call, skb); |
| 1291 | if (!last) { |
| 1292 | _leave(" = 0 [more]"); |
| 1293 | return 0; |
| 1294 | } |
| 1295 | |
| 1296 | if (call->reply_size != call->reply_max) { |
| 1297 | _leave(" = -EBADMSG [%u != %u]", |
| 1298 | call->reply_size, call->reply_max); |
| 1299 | return -EBADMSG; |
| 1300 | } |
| 1301 | |
| 1302 | /* unmarshall the reply once we've received all of it */ |
| 1303 | store_version = NULL; |
| 1304 | if (call->operation_ID == FSSTOREDATA) |
| 1305 | store_version = &call->store_version; |
| 1306 | |
| 1307 | bp = call->buffer; |
| 1308 | xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode, store_version); |
| 1309 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ |
| 1310 | |
| 1311 | _leave(" = 0 [done]"); |
| 1312 | return 0; |
| 1313 | } |
| 1314 | |
| 1315 | /* |
| 1316 | * FS.StoreStatus operation type |
| 1317 | */ |
| 1318 | static const struct afs_call_type afs_RXFSStoreStatus = { |
| 1319 | .name = "FS.StoreStatus", |
| 1320 | .deliver = afs_deliver_fs_store_status, |
| 1321 | .abort_to_error = afs_abort_to_error, |
| 1322 | .destructor = afs_flat_call_destructor, |
| 1323 | }; |
| 1324 | |
| 1325 | static const struct afs_call_type afs_RXFSStoreData_as_Status = { |
| 1326 | .name = "FS.StoreData", |
| 1327 | .deliver = afs_deliver_fs_store_status, |
| 1328 | .abort_to_error = afs_abort_to_error, |
| 1329 | .destructor = afs_flat_call_destructor, |
| 1330 | }; |
| 1331 | |
David Howells | b9b1f8d | 2007-05-10 03:15:21 -0700 | [diff] [blame] | 1332 | static const struct afs_call_type afs_RXFSStoreData64_as_Status = { |
| 1333 | .name = "FS.StoreData64", |
| 1334 | .deliver = afs_deliver_fs_store_status, |
| 1335 | .abort_to_error = afs_abort_to_error, |
| 1336 | .destructor = afs_flat_call_destructor, |
| 1337 | }; |
| 1338 | |
| 1339 | /* |
| 1340 | * set the attributes on a very large file, using FS.StoreData rather than |
| 1341 | * FS.StoreStatus so as to alter the file size also |
| 1342 | */ |
| 1343 | static int afs_fs_setattr_size64(struct afs_server *server, struct key *key, |
| 1344 | struct afs_vnode *vnode, struct iattr *attr, |
| 1345 | const struct afs_wait_mode *wait_mode) |
| 1346 | { |
| 1347 | struct afs_call *call; |
| 1348 | __be32 *bp; |
| 1349 | |
| 1350 | _enter(",%x,{%x:%u},,", |
| 1351 | key_serial(key), vnode->fid.vid, vnode->fid.vnode); |
| 1352 | |
| 1353 | ASSERT(attr->ia_valid & ATTR_SIZE); |
| 1354 | |
| 1355 | call = afs_alloc_flat_call(&afs_RXFSStoreData64_as_Status, |
| 1356 | (4 + 6 + 3 * 2) * 4, |
| 1357 | (21 + 6) * 4); |
| 1358 | if (!call) |
| 1359 | return -ENOMEM; |
| 1360 | |
| 1361 | call->key = key; |
| 1362 | call->reply = vnode; |
| 1363 | call->service_id = FS_SERVICE; |
| 1364 | call->port = htons(AFS_FS_PORT); |
| 1365 | call->store_version = vnode->status.data_version + 1; |
| 1366 | call->operation_ID = FSSTOREDATA; |
| 1367 | |
| 1368 | /* marshall the parameters */ |
| 1369 | bp = call->request; |
| 1370 | *bp++ = htonl(FSSTOREDATA64); |
| 1371 | *bp++ = htonl(vnode->fid.vid); |
| 1372 | *bp++ = htonl(vnode->fid.vnode); |
| 1373 | *bp++ = htonl(vnode->fid.unique); |
| 1374 | |
| 1375 | xdr_encode_AFS_StoreStatus(&bp, attr); |
| 1376 | |
| 1377 | *bp++ = 0; /* position of start of write */ |
| 1378 | *bp++ = 0; |
| 1379 | *bp++ = 0; /* size of write */ |
| 1380 | *bp++ = 0; |
| 1381 | *bp++ = htonl(attr->ia_size >> 32); /* new file length */ |
| 1382 | *bp++ = htonl((u32) attr->ia_size); |
| 1383 | |
| 1384 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); |
| 1385 | } |
| 1386 | |
David Howells | 31143d5 | 2007-05-09 02:33:46 -0700 | [diff] [blame] | 1387 | /* |
| 1388 | * set the attributes on a file, using FS.StoreData rather than FS.StoreStatus |
| 1389 | * so as to alter the file size also |
| 1390 | */ |
| 1391 | static int afs_fs_setattr_size(struct afs_server *server, struct key *key, |
| 1392 | struct afs_vnode *vnode, struct iattr *attr, |
| 1393 | const struct afs_wait_mode *wait_mode) |
| 1394 | { |
| 1395 | struct afs_call *call; |
| 1396 | __be32 *bp; |
| 1397 | |
| 1398 | _enter(",%x,{%x:%u},,", |
| 1399 | key_serial(key), vnode->fid.vid, vnode->fid.vnode); |
| 1400 | |
| 1401 | ASSERT(attr->ia_valid & ATTR_SIZE); |
David Howells | b9b1f8d | 2007-05-10 03:15:21 -0700 | [diff] [blame] | 1402 | if (attr->ia_size >> 32) |
| 1403 | return afs_fs_setattr_size64(server, key, vnode, attr, |
| 1404 | wait_mode); |
David Howells | 31143d5 | 2007-05-09 02:33:46 -0700 | [diff] [blame] | 1405 | |
| 1406 | call = afs_alloc_flat_call(&afs_RXFSStoreData_as_Status, |
| 1407 | (4 + 6 + 3) * 4, |
| 1408 | (21 + 6) * 4); |
| 1409 | if (!call) |
| 1410 | return -ENOMEM; |
| 1411 | |
| 1412 | call->key = key; |
| 1413 | call->reply = vnode; |
| 1414 | call->service_id = FS_SERVICE; |
| 1415 | call->port = htons(AFS_FS_PORT); |
| 1416 | call->store_version = vnode->status.data_version + 1; |
| 1417 | call->operation_ID = FSSTOREDATA; |
| 1418 | |
| 1419 | /* marshall the parameters */ |
| 1420 | bp = call->request; |
| 1421 | *bp++ = htonl(FSSTOREDATA); |
| 1422 | *bp++ = htonl(vnode->fid.vid); |
| 1423 | *bp++ = htonl(vnode->fid.vnode); |
| 1424 | *bp++ = htonl(vnode->fid.unique); |
| 1425 | |
| 1426 | xdr_encode_AFS_StoreStatus(&bp, attr); |
| 1427 | |
| 1428 | *bp++ = 0; /* position of start of write */ |
| 1429 | *bp++ = 0; /* size of write */ |
| 1430 | *bp++ = htonl(attr->ia_size); /* new file length */ |
| 1431 | |
| 1432 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); |
| 1433 | } |
| 1434 | |
| 1435 | /* |
| 1436 | * set the attributes on a file, using FS.StoreData if there's a change in file |
| 1437 | * size, and FS.StoreStatus otherwise |
| 1438 | */ |
| 1439 | int afs_fs_setattr(struct afs_server *server, struct key *key, |
| 1440 | struct afs_vnode *vnode, struct iattr *attr, |
| 1441 | const struct afs_wait_mode *wait_mode) |
| 1442 | { |
| 1443 | struct afs_call *call; |
| 1444 | __be32 *bp; |
| 1445 | |
| 1446 | if (attr->ia_valid & ATTR_SIZE) |
| 1447 | return afs_fs_setattr_size(server, key, vnode, attr, |
| 1448 | wait_mode); |
| 1449 | |
| 1450 | _enter(",%x,{%x:%u},,", |
| 1451 | key_serial(key), vnode->fid.vid, vnode->fid.vnode); |
| 1452 | |
| 1453 | call = afs_alloc_flat_call(&afs_RXFSStoreStatus, |
| 1454 | (4 + 6) * 4, |
| 1455 | (21 + 6) * 4); |
| 1456 | if (!call) |
| 1457 | return -ENOMEM; |
| 1458 | |
| 1459 | call->key = key; |
| 1460 | call->reply = vnode; |
| 1461 | call->service_id = FS_SERVICE; |
| 1462 | call->port = htons(AFS_FS_PORT); |
| 1463 | call->operation_ID = FSSTORESTATUS; |
| 1464 | |
| 1465 | /* marshall the parameters */ |
| 1466 | bp = call->request; |
| 1467 | *bp++ = htonl(FSSTORESTATUS); |
| 1468 | *bp++ = htonl(vnode->fid.vid); |
| 1469 | *bp++ = htonl(vnode->fid.vnode); |
| 1470 | *bp++ = htonl(vnode->fid.unique); |
| 1471 | |
| 1472 | xdr_encode_AFS_StoreStatus(&bp, attr); |
| 1473 | |
| 1474 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); |
| 1475 | } |
David Howells | 45222b9 | 2007-05-10 22:22:20 -0700 | [diff] [blame] | 1476 | |
| 1477 | /* |
| 1478 | * deliver reply data to an FS.GetVolumeStatus |
| 1479 | */ |
| 1480 | static int afs_deliver_fs_get_volume_status(struct afs_call *call, |
| 1481 | struct sk_buff *skb, bool last) |
| 1482 | { |
| 1483 | const __be32 *bp; |
| 1484 | char *p; |
| 1485 | int ret; |
| 1486 | |
| 1487 | _enter("{%u},{%u},%d", call->unmarshall, skb->len, last); |
| 1488 | |
| 1489 | switch (call->unmarshall) { |
| 1490 | case 0: |
| 1491 | call->offset = 0; |
| 1492 | call->unmarshall++; |
| 1493 | |
| 1494 | /* extract the returned status record */ |
| 1495 | case 1: |
| 1496 | _debug("extract status"); |
| 1497 | ret = afs_extract_data(call, skb, last, call->buffer, |
| 1498 | 12 * 4); |
| 1499 | switch (ret) { |
| 1500 | case 0: break; |
| 1501 | case -EAGAIN: return 0; |
| 1502 | default: return ret; |
| 1503 | } |
| 1504 | |
| 1505 | bp = call->buffer; |
| 1506 | xdr_decode_AFSFetchVolumeStatus(&bp, call->reply2); |
| 1507 | call->offset = 0; |
| 1508 | call->unmarshall++; |
| 1509 | |
| 1510 | /* extract the volume name length */ |
| 1511 | case 2: |
| 1512 | ret = afs_extract_data(call, skb, last, &call->tmp, 4); |
| 1513 | switch (ret) { |
| 1514 | case 0: break; |
| 1515 | case -EAGAIN: return 0; |
| 1516 | default: return ret; |
| 1517 | } |
| 1518 | |
| 1519 | call->count = ntohl(call->tmp); |
| 1520 | _debug("volname length: %u", call->count); |
| 1521 | if (call->count >= AFSNAMEMAX) |
| 1522 | return -EBADMSG; |
| 1523 | call->offset = 0; |
| 1524 | call->unmarshall++; |
| 1525 | |
| 1526 | /* extract the volume name */ |
| 1527 | case 3: |
| 1528 | _debug("extract volname"); |
| 1529 | if (call->count > 0) { |
| 1530 | ret = afs_extract_data(call, skb, last, call->reply3, |
| 1531 | call->count); |
| 1532 | switch (ret) { |
| 1533 | case 0: break; |
| 1534 | case -EAGAIN: return 0; |
| 1535 | default: return ret; |
| 1536 | } |
| 1537 | } |
| 1538 | |
| 1539 | p = call->reply3; |
| 1540 | p[call->count] = 0; |
| 1541 | _debug("volname '%s'", p); |
| 1542 | |
| 1543 | call->offset = 0; |
| 1544 | call->unmarshall++; |
| 1545 | |
| 1546 | /* extract the volume name padding */ |
| 1547 | if ((call->count & 3) == 0) { |
| 1548 | call->unmarshall++; |
| 1549 | goto no_volname_padding; |
| 1550 | } |
| 1551 | call->count = 4 - (call->count & 3); |
| 1552 | |
| 1553 | case 4: |
| 1554 | ret = afs_extract_data(call, skb, last, call->buffer, |
| 1555 | call->count); |
| 1556 | switch (ret) { |
| 1557 | case 0: break; |
| 1558 | case -EAGAIN: return 0; |
| 1559 | default: return ret; |
| 1560 | } |
| 1561 | |
| 1562 | call->offset = 0; |
| 1563 | call->unmarshall++; |
| 1564 | no_volname_padding: |
| 1565 | |
| 1566 | /* extract the offline message length */ |
| 1567 | case 5: |
| 1568 | ret = afs_extract_data(call, skb, last, &call->tmp, 4); |
| 1569 | switch (ret) { |
| 1570 | case 0: break; |
| 1571 | case -EAGAIN: return 0; |
| 1572 | default: return ret; |
| 1573 | } |
| 1574 | |
| 1575 | call->count = ntohl(call->tmp); |
| 1576 | _debug("offline msg length: %u", call->count); |
| 1577 | if (call->count >= AFSNAMEMAX) |
| 1578 | return -EBADMSG; |
| 1579 | call->offset = 0; |
| 1580 | call->unmarshall++; |
| 1581 | |
| 1582 | /* extract the offline message */ |
| 1583 | case 6: |
| 1584 | _debug("extract offline"); |
| 1585 | if (call->count > 0) { |
| 1586 | ret = afs_extract_data(call, skb, last, call->reply3, |
| 1587 | call->count); |
| 1588 | switch (ret) { |
| 1589 | case 0: break; |
| 1590 | case -EAGAIN: return 0; |
| 1591 | default: return ret; |
| 1592 | } |
| 1593 | } |
| 1594 | |
| 1595 | p = call->reply3; |
| 1596 | p[call->count] = 0; |
| 1597 | _debug("offline '%s'", p); |
| 1598 | |
| 1599 | call->offset = 0; |
| 1600 | call->unmarshall++; |
| 1601 | |
| 1602 | /* extract the offline message padding */ |
| 1603 | if ((call->count & 3) == 0) { |
| 1604 | call->unmarshall++; |
| 1605 | goto no_offline_padding; |
| 1606 | } |
| 1607 | call->count = 4 - (call->count & 3); |
| 1608 | |
| 1609 | case 7: |
| 1610 | ret = afs_extract_data(call, skb, last, call->buffer, |
| 1611 | call->count); |
| 1612 | switch (ret) { |
| 1613 | case 0: break; |
| 1614 | case -EAGAIN: return 0; |
| 1615 | default: return ret; |
| 1616 | } |
| 1617 | |
| 1618 | call->offset = 0; |
| 1619 | call->unmarshall++; |
| 1620 | no_offline_padding: |
| 1621 | |
| 1622 | /* extract the message of the day length */ |
| 1623 | case 8: |
| 1624 | ret = afs_extract_data(call, skb, last, &call->tmp, 4); |
| 1625 | switch (ret) { |
| 1626 | case 0: break; |
| 1627 | case -EAGAIN: return 0; |
| 1628 | default: return ret; |
| 1629 | } |
| 1630 | |
| 1631 | call->count = ntohl(call->tmp); |
| 1632 | _debug("motd length: %u", call->count); |
| 1633 | if (call->count >= AFSNAMEMAX) |
| 1634 | return -EBADMSG; |
| 1635 | call->offset = 0; |
| 1636 | call->unmarshall++; |
| 1637 | |
| 1638 | /* extract the message of the day */ |
| 1639 | case 9: |
| 1640 | _debug("extract motd"); |
| 1641 | if (call->count > 0) { |
| 1642 | ret = afs_extract_data(call, skb, last, call->reply3, |
| 1643 | call->count); |
| 1644 | switch (ret) { |
| 1645 | case 0: break; |
| 1646 | case -EAGAIN: return 0; |
| 1647 | default: return ret; |
| 1648 | } |
| 1649 | } |
| 1650 | |
| 1651 | p = call->reply3; |
| 1652 | p[call->count] = 0; |
| 1653 | _debug("motd '%s'", p); |
| 1654 | |
| 1655 | call->offset = 0; |
| 1656 | call->unmarshall++; |
| 1657 | |
| 1658 | /* extract the message of the day padding */ |
| 1659 | if ((call->count & 3) == 0) { |
| 1660 | call->unmarshall++; |
| 1661 | goto no_motd_padding; |
| 1662 | } |
| 1663 | call->count = 4 - (call->count & 3); |
| 1664 | |
| 1665 | case 10: |
| 1666 | ret = afs_extract_data(call, skb, last, call->buffer, |
| 1667 | call->count); |
| 1668 | switch (ret) { |
| 1669 | case 0: break; |
| 1670 | case -EAGAIN: return 0; |
| 1671 | default: return ret; |
| 1672 | } |
| 1673 | |
| 1674 | call->offset = 0; |
| 1675 | call->unmarshall++; |
| 1676 | no_motd_padding: |
| 1677 | |
| 1678 | case 11: |
| 1679 | _debug("trailer %d", skb->len); |
| 1680 | if (skb->len != 0) |
| 1681 | return -EBADMSG; |
| 1682 | break; |
| 1683 | } |
| 1684 | |
| 1685 | if (!last) |
| 1686 | return 0; |
| 1687 | |
| 1688 | _leave(" = 0 [done]"); |
| 1689 | return 0; |
| 1690 | } |
| 1691 | |
| 1692 | /* |
| 1693 | * destroy an FS.GetVolumeStatus call |
| 1694 | */ |
| 1695 | static void afs_get_volume_status_call_destructor(struct afs_call *call) |
| 1696 | { |
| 1697 | kfree(call->reply3); |
| 1698 | call->reply3 = NULL; |
| 1699 | afs_flat_call_destructor(call); |
| 1700 | } |
| 1701 | |
| 1702 | /* |
| 1703 | * FS.GetVolumeStatus operation type |
| 1704 | */ |
| 1705 | static const struct afs_call_type afs_RXFSGetVolumeStatus = { |
| 1706 | .name = "FS.GetVolumeStatus", |
| 1707 | .deliver = afs_deliver_fs_get_volume_status, |
| 1708 | .abort_to_error = afs_abort_to_error, |
| 1709 | .destructor = afs_get_volume_status_call_destructor, |
| 1710 | }; |
| 1711 | |
| 1712 | /* |
| 1713 | * fetch the status of a volume |
| 1714 | */ |
| 1715 | int afs_fs_get_volume_status(struct afs_server *server, |
| 1716 | struct key *key, |
| 1717 | struct afs_vnode *vnode, |
| 1718 | struct afs_volume_status *vs, |
| 1719 | const struct afs_wait_mode *wait_mode) |
| 1720 | { |
| 1721 | struct afs_call *call; |
| 1722 | __be32 *bp; |
| 1723 | void *tmpbuf; |
| 1724 | |
| 1725 | _enter(""); |
| 1726 | |
| 1727 | tmpbuf = kmalloc(AFSOPAQUEMAX, GFP_KERNEL); |
| 1728 | if (!tmpbuf) |
| 1729 | return -ENOMEM; |
| 1730 | |
| 1731 | call = afs_alloc_flat_call(&afs_RXFSGetVolumeStatus, 2 * 4, 12 * 4); |
| 1732 | if (!call) { |
| 1733 | kfree(tmpbuf); |
| 1734 | return -ENOMEM; |
| 1735 | } |
| 1736 | |
| 1737 | call->key = key; |
| 1738 | call->reply = vnode; |
| 1739 | call->reply2 = vs; |
| 1740 | call->reply3 = tmpbuf; |
| 1741 | call->service_id = FS_SERVICE; |
| 1742 | call->port = htons(AFS_FS_PORT); |
| 1743 | |
| 1744 | /* marshall the parameters */ |
| 1745 | bp = call->request; |
| 1746 | bp[0] = htonl(FSGETVOLUMESTATUS); |
| 1747 | bp[1] = htonl(vnode->fid.vid); |
| 1748 | |
| 1749 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); |
| 1750 | } |
David Howells | e8d6c55 | 2007-07-15 23:40:12 -0700 | [diff] [blame] | 1751 | |
| 1752 | /* |
| 1753 | * deliver reply data to an FS.SetLock, FS.ExtendLock or FS.ReleaseLock |
| 1754 | */ |
| 1755 | static int afs_deliver_fs_xxxx_lock(struct afs_call *call, |
| 1756 | struct sk_buff *skb, bool last) |
| 1757 | { |
| 1758 | const __be32 *bp; |
| 1759 | |
| 1760 | _enter("{%u},{%u},%d", call->unmarshall, skb->len, last); |
| 1761 | |
| 1762 | afs_transfer_reply(call, skb); |
| 1763 | if (!last) |
| 1764 | return 0; |
| 1765 | |
| 1766 | if (call->reply_size != call->reply_max) |
| 1767 | return -EBADMSG; |
| 1768 | |
| 1769 | /* unmarshall the reply once we've received all of it */ |
| 1770 | bp = call->buffer; |
| 1771 | /* xdr_decode_AFSVolSync(&bp, call->replyX); */ |
| 1772 | |
| 1773 | _leave(" = 0 [done]"); |
| 1774 | return 0; |
| 1775 | } |
| 1776 | |
| 1777 | /* |
| 1778 | * FS.SetLock operation type |
| 1779 | */ |
| 1780 | static const struct afs_call_type afs_RXFSSetLock = { |
| 1781 | .name = "FS.SetLock", |
| 1782 | .deliver = afs_deliver_fs_xxxx_lock, |
| 1783 | .abort_to_error = afs_abort_to_error, |
| 1784 | .destructor = afs_flat_call_destructor, |
| 1785 | }; |
| 1786 | |
| 1787 | /* |
| 1788 | * FS.ExtendLock operation type |
| 1789 | */ |
| 1790 | static const struct afs_call_type afs_RXFSExtendLock = { |
| 1791 | .name = "FS.ExtendLock", |
| 1792 | .deliver = afs_deliver_fs_xxxx_lock, |
| 1793 | .abort_to_error = afs_abort_to_error, |
| 1794 | .destructor = afs_flat_call_destructor, |
| 1795 | }; |
| 1796 | |
| 1797 | /* |
| 1798 | * FS.ReleaseLock operation type |
| 1799 | */ |
| 1800 | static const struct afs_call_type afs_RXFSReleaseLock = { |
| 1801 | .name = "FS.ReleaseLock", |
| 1802 | .deliver = afs_deliver_fs_xxxx_lock, |
| 1803 | .abort_to_error = afs_abort_to_error, |
| 1804 | .destructor = afs_flat_call_destructor, |
| 1805 | }; |
| 1806 | |
| 1807 | /* |
| 1808 | * get a lock on a file |
| 1809 | */ |
| 1810 | int afs_fs_set_lock(struct afs_server *server, |
| 1811 | struct key *key, |
| 1812 | struct afs_vnode *vnode, |
| 1813 | afs_lock_type_t type, |
| 1814 | const struct afs_wait_mode *wait_mode) |
| 1815 | { |
| 1816 | struct afs_call *call; |
| 1817 | __be32 *bp; |
| 1818 | |
| 1819 | _enter(""); |
| 1820 | |
| 1821 | call = afs_alloc_flat_call(&afs_RXFSSetLock, 5 * 4, 6 * 4); |
| 1822 | if (!call) |
| 1823 | return -ENOMEM; |
| 1824 | |
| 1825 | call->key = key; |
| 1826 | call->reply = vnode; |
| 1827 | call->service_id = FS_SERVICE; |
| 1828 | call->port = htons(AFS_FS_PORT); |
| 1829 | |
| 1830 | /* marshall the parameters */ |
| 1831 | bp = call->request; |
| 1832 | *bp++ = htonl(FSSETLOCK); |
| 1833 | *bp++ = htonl(vnode->fid.vid); |
| 1834 | *bp++ = htonl(vnode->fid.vnode); |
| 1835 | *bp++ = htonl(vnode->fid.unique); |
| 1836 | *bp++ = htonl(type); |
| 1837 | |
| 1838 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); |
| 1839 | } |
| 1840 | |
| 1841 | /* |
| 1842 | * extend a lock on a file |
| 1843 | */ |
| 1844 | int afs_fs_extend_lock(struct afs_server *server, |
| 1845 | struct key *key, |
| 1846 | struct afs_vnode *vnode, |
| 1847 | const struct afs_wait_mode *wait_mode) |
| 1848 | { |
| 1849 | struct afs_call *call; |
| 1850 | __be32 *bp; |
| 1851 | |
| 1852 | _enter(""); |
| 1853 | |
| 1854 | call = afs_alloc_flat_call(&afs_RXFSExtendLock, 4 * 4, 6 * 4); |
| 1855 | if (!call) |
| 1856 | return -ENOMEM; |
| 1857 | |
| 1858 | call->key = key; |
| 1859 | call->reply = vnode; |
| 1860 | call->service_id = FS_SERVICE; |
| 1861 | call->port = htons(AFS_FS_PORT); |
| 1862 | |
| 1863 | /* marshall the parameters */ |
| 1864 | bp = call->request; |
| 1865 | *bp++ = htonl(FSEXTENDLOCK); |
| 1866 | *bp++ = htonl(vnode->fid.vid); |
| 1867 | *bp++ = htonl(vnode->fid.vnode); |
| 1868 | *bp++ = htonl(vnode->fid.unique); |
| 1869 | |
| 1870 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); |
| 1871 | } |
| 1872 | |
| 1873 | /* |
| 1874 | * release a lock on a file |
| 1875 | */ |
| 1876 | int afs_fs_release_lock(struct afs_server *server, |
| 1877 | struct key *key, |
| 1878 | struct afs_vnode *vnode, |
| 1879 | const struct afs_wait_mode *wait_mode) |
| 1880 | { |
| 1881 | struct afs_call *call; |
| 1882 | __be32 *bp; |
| 1883 | |
| 1884 | _enter(""); |
| 1885 | |
| 1886 | call = afs_alloc_flat_call(&afs_RXFSReleaseLock, 4 * 4, 6 * 4); |
| 1887 | if (!call) |
| 1888 | return -ENOMEM; |
| 1889 | |
| 1890 | call->key = key; |
| 1891 | call->reply = vnode; |
| 1892 | call->service_id = FS_SERVICE; |
| 1893 | call->port = htons(AFS_FS_PORT); |
| 1894 | |
| 1895 | /* marshall the parameters */ |
| 1896 | bp = call->request; |
| 1897 | *bp++ = htonl(FSRELEASELOCK); |
| 1898 | *bp++ = htonl(vnode->fid.vid); |
| 1899 | *bp++ = htonl(vnode->fid.vnode); |
| 1900 | *bp++ = htonl(vnode->fid.unique); |
| 1901 | |
| 1902 | return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode); |
| 1903 | } |