| 1 | /* |
| 2 | * Copyright (c) 2011-2015 The DragonFly Project. All rights reserved. |
| 3 | * |
| 4 | * This code is derived from software contributed to The DragonFly Project |
| 5 | * by Matthew Dillon <dillon@dragonflybsd.org> |
| 6 | * by Venkatesh Srinivas <vsrinivas@dragonflybsd.org> |
| 7 | * |
| 8 | * Redistribution and use in source and binary forms, with or without |
| 9 | * modification, are permitted provided that the following conditions |
| 10 | * are met: |
| 11 | * |
| 12 | * 1. Redistributions of source code must retain the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer. |
| 14 | * 2. Redistributions in binary form must reproduce the above copyright |
| 15 | * notice, this list of conditions and the following disclaimer in |
| 16 | * the documentation and/or other materials provided with the |
| 17 | * distribution. |
| 18 | * 3. Neither the name of The DragonFly Project nor the names of its |
| 19 | * contributors may be used to endorse or promote products derived |
| 20 | * from this software without specific, prior written permission. |
| 21 | * |
| 22 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 23 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 24 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| 25 | * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| 26 | * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 27 | * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| 28 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 29 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
| 30 | * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| 31 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| 32 | * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 33 | * SUCH DAMAGE. |
| 34 | */ |
| 35 | /* |
| 36 | * Ioctl Functions. |
| 37 | * |
| 38 | * WARNING! The ioctl functions which manipulate the connection state need |
| 39 | * to be able to run without deadlock on the volume's chain lock. |
| 40 | * Most of these functions use a separate lock. |
| 41 | */ |
| 42 | |
| 43 | #include "hammer2.h" |
| 44 | |
| 45 | static int hammer2_ioctl_version_get(hammer2_inode_t *ip, void *data); |
| 46 | static int hammer2_ioctl_recluster(hammer2_inode_t *ip, void *data); |
| 47 | static int hammer2_ioctl_remote_scan(hammer2_inode_t *ip, void *data); |
| 48 | static int hammer2_ioctl_remote_add(hammer2_inode_t *ip, void *data); |
| 49 | static int hammer2_ioctl_remote_del(hammer2_inode_t *ip, void *data); |
| 50 | static int hammer2_ioctl_remote_rep(hammer2_inode_t *ip, void *data); |
| 51 | static int hammer2_ioctl_socket_get(hammer2_inode_t *ip, void *data); |
| 52 | static int hammer2_ioctl_socket_set(hammer2_inode_t *ip, void *data); |
| 53 | static int hammer2_ioctl_pfs_get(hammer2_inode_t *ip, void *data); |
| 54 | static int hammer2_ioctl_pfs_lookup(hammer2_inode_t *ip, void *data); |
| 55 | static int hammer2_ioctl_pfs_create(hammer2_inode_t *ip, void *data); |
| 56 | static int hammer2_ioctl_pfs_snapshot(hammer2_inode_t *ip, void *data); |
| 57 | static int hammer2_ioctl_pfs_delete(hammer2_inode_t *ip, void *data); |
| 58 | static int hammer2_ioctl_inode_get(hammer2_inode_t *ip, void *data); |
| 59 | static int hammer2_ioctl_inode_set(hammer2_inode_t *ip, void *data); |
| 60 | static int hammer2_ioctl_debug_dump(hammer2_inode_t *ip); |
| 61 | //static int hammer2_ioctl_inode_comp_set(hammer2_inode_t *ip, void *data); |
| 62 | //static int hammer2_ioctl_inode_comp_rec_set(hammer2_inode_t *ip, void *data); |
| 63 | //static int hammer2_ioctl_inode_comp_rec_set2(hammer2_inode_t *ip, void *data); |
| 64 | static int hammer2_ioctl_bulkfree_scan(hammer2_inode_t *ip, void *data); |
| 65 | |
| 66 | int |
| 67 | hammer2_ioctl(hammer2_inode_t *ip, u_long com, void *data, int fflag, |
| 68 | struct ucred *cred) |
| 69 | { |
| 70 | int error; |
| 71 | |
| 72 | /* |
| 73 | * Standard root cred checks, will be selectively ignored below |
| 74 | * for ioctls that do not require root creds. |
| 75 | */ |
| 76 | error = priv_check_cred(cred, PRIV_HAMMER_IOCTL, 0); |
| 77 | |
| 78 | switch(com) { |
| 79 | case HAMMER2IOC_VERSION_GET: |
| 80 | error = hammer2_ioctl_version_get(ip, data); |
| 81 | break; |
| 82 | case HAMMER2IOC_RECLUSTER: |
| 83 | if (error == 0) |
| 84 | error = hammer2_ioctl_recluster(ip, data); |
| 85 | break; |
| 86 | case HAMMER2IOC_REMOTE_SCAN: |
| 87 | if (error == 0) |
| 88 | error = hammer2_ioctl_remote_scan(ip, data); |
| 89 | break; |
| 90 | case HAMMER2IOC_REMOTE_ADD: |
| 91 | if (error == 0) |
| 92 | error = hammer2_ioctl_remote_add(ip, data); |
| 93 | break; |
| 94 | case HAMMER2IOC_REMOTE_DEL: |
| 95 | if (error == 0) |
| 96 | error = hammer2_ioctl_remote_del(ip, data); |
| 97 | break; |
| 98 | case HAMMER2IOC_REMOTE_REP: |
| 99 | if (error == 0) |
| 100 | error = hammer2_ioctl_remote_rep(ip, data); |
| 101 | break; |
| 102 | case HAMMER2IOC_SOCKET_GET: |
| 103 | if (error == 0) |
| 104 | error = hammer2_ioctl_socket_get(ip, data); |
| 105 | break; |
| 106 | case HAMMER2IOC_SOCKET_SET: |
| 107 | if (error == 0) |
| 108 | error = hammer2_ioctl_socket_set(ip, data); |
| 109 | break; |
| 110 | case HAMMER2IOC_PFS_GET: |
| 111 | if (error == 0) |
| 112 | error = hammer2_ioctl_pfs_get(ip, data); |
| 113 | break; |
| 114 | case HAMMER2IOC_PFS_LOOKUP: |
| 115 | if (error == 0) |
| 116 | error = hammer2_ioctl_pfs_lookup(ip, data); |
| 117 | break; |
| 118 | case HAMMER2IOC_PFS_CREATE: |
| 119 | if (error == 0) |
| 120 | error = hammer2_ioctl_pfs_create(ip, data); |
| 121 | break; |
| 122 | case HAMMER2IOC_PFS_DELETE: |
| 123 | if (error == 0) |
| 124 | error = hammer2_ioctl_pfs_delete(ip, data); |
| 125 | break; |
| 126 | case HAMMER2IOC_PFS_SNAPSHOT: |
| 127 | if (error == 0) |
| 128 | error = hammer2_ioctl_pfs_snapshot(ip, data); |
| 129 | break; |
| 130 | case HAMMER2IOC_INODE_GET: |
| 131 | error = hammer2_ioctl_inode_get(ip, data); |
| 132 | break; |
| 133 | case HAMMER2IOC_INODE_SET: |
| 134 | if (error == 0) |
| 135 | error = hammer2_ioctl_inode_set(ip, data); |
| 136 | break; |
| 137 | case HAMMER2IOC_BULKFREE_SCAN: |
| 138 | error = hammer2_ioctl_bulkfree_scan(ip, data); |
| 139 | break; |
| 140 | /*case HAMMER2IOC_INODE_COMP_SET: |
| 141 | error = hammer2_ioctl_inode_comp_set(ip, data); |
| 142 | break; |
| 143 | case HAMMER2IOC_INODE_COMP_REC_SET: |
| 144 | error = hammer2_ioctl_inode_comp_rec_set(ip, data); |
| 145 | break; |
| 146 | case HAMMER2IOC_INODE_COMP_REC_SET2: |
| 147 | error = hammer2_ioctl_inode_comp_rec_set2(ip, data); |
| 148 | break;*/ |
| 149 | case HAMMER2IOC_DEBUG_DUMP: |
| 150 | error = hammer2_ioctl_debug_dump(ip); |
| 151 | break; |
| 152 | default: |
| 153 | error = EOPNOTSUPP; |
| 154 | break; |
| 155 | } |
| 156 | return (error); |
| 157 | } |
| 158 | |
| 159 | /* |
| 160 | * Retrieve version and basic info |
| 161 | */ |
| 162 | static int |
| 163 | hammer2_ioctl_version_get(hammer2_inode_t *ip, void *data) |
| 164 | { |
| 165 | hammer2_ioc_version_t *version = data; |
| 166 | hammer2_dev_t *hmp; |
| 167 | |
| 168 | hmp = ip->pmp->pfs_hmps[0]; |
| 169 | if (hmp) |
| 170 | version->version = hmp->voldata.version; |
| 171 | else |
| 172 | version->version = -1; |
| 173 | return 0; |
| 174 | } |
| 175 | |
| 176 | static int |
| 177 | hammer2_ioctl_recluster(hammer2_inode_t *ip, void *data) |
| 178 | { |
| 179 | hammer2_ioc_recluster_t *recl = data; |
| 180 | struct file *fp; |
| 181 | hammer2_cluster_t *cluster; |
| 182 | int error; |
| 183 | |
| 184 | fp = holdfp(curproc->p_fd, recl->fd, -1); |
| 185 | if (fp) { |
| 186 | kprintf("reconnect to cluster: XXX "); |
| 187 | cluster = &ip->pmp->iroot->cluster; |
| 188 | if (cluster->nchains != 1 || cluster->focus == NULL) { |
| 189 | kprintf("not a local device mount\n"); |
| 190 | error = EINVAL; |
| 191 | } else { |
| 192 | hammer2_cluster_reconnect(cluster->focus->hmp, fp); |
| 193 | kprintf("ok\n"); |
| 194 | error = 0; |
| 195 | } |
| 196 | } else { |
| 197 | error = EINVAL; |
| 198 | } |
| 199 | return error; |
| 200 | } |
| 201 | |
| 202 | /* |
| 203 | * Retrieve information about a remote |
| 204 | */ |
| 205 | static int |
| 206 | hammer2_ioctl_remote_scan(hammer2_inode_t *ip, void *data) |
| 207 | { |
| 208 | hammer2_dev_t *hmp; |
| 209 | hammer2_ioc_remote_t *remote = data; |
| 210 | int copyid = remote->copyid; |
| 211 | |
| 212 | hmp = ip->pmp->pfs_hmps[0]; |
| 213 | if (hmp == NULL) |
| 214 | return (EINVAL); |
| 215 | |
| 216 | if (copyid < 0 || copyid >= HAMMER2_COPYID_COUNT) |
| 217 | return (EINVAL); |
| 218 | |
| 219 | hammer2_voldata_lock(hmp); |
| 220 | remote->copy1 = hmp->voldata.copyinfo[copyid]; |
| 221 | hammer2_voldata_unlock(hmp); |
| 222 | |
| 223 | /* |
| 224 | * Adjust nextid (GET only) |
| 225 | */ |
| 226 | while (++copyid < HAMMER2_COPYID_COUNT && |
| 227 | hmp->voldata.copyinfo[copyid].copyid == 0) { |
| 228 | ; |
| 229 | } |
| 230 | if (copyid == HAMMER2_COPYID_COUNT) |
| 231 | remote->nextid = -1; |
| 232 | else |
| 233 | remote->nextid = copyid; |
| 234 | |
| 235 | return(0); |
| 236 | } |
| 237 | |
| 238 | /* |
| 239 | * Add new remote entry |
| 240 | */ |
| 241 | static int |
| 242 | hammer2_ioctl_remote_add(hammer2_inode_t *ip, void *data) |
| 243 | { |
| 244 | hammer2_ioc_remote_t *remote = data; |
| 245 | hammer2_pfs_t *pmp = ip->pmp; |
| 246 | hammer2_dev_t *hmp; |
| 247 | int copyid = remote->copyid; |
| 248 | int error = 0; |
| 249 | |
| 250 | hmp = pmp->pfs_hmps[0]; |
| 251 | if (hmp == NULL) |
| 252 | return (EINVAL); |
| 253 | if (copyid >= HAMMER2_COPYID_COUNT) |
| 254 | return (EINVAL); |
| 255 | |
| 256 | hammer2_voldata_lock(hmp); |
| 257 | if (copyid < 0) { |
| 258 | for (copyid = 1; copyid < HAMMER2_COPYID_COUNT; ++copyid) { |
| 259 | if (hmp->voldata.copyinfo[copyid].copyid == 0) |
| 260 | break; |
| 261 | } |
| 262 | if (copyid == HAMMER2_COPYID_COUNT) { |
| 263 | error = ENOSPC; |
| 264 | goto failed; |
| 265 | } |
| 266 | } |
| 267 | hammer2_voldata_modify(hmp); |
| 268 | remote->copy1.copyid = copyid; |
| 269 | hmp->voldata.copyinfo[copyid] = remote->copy1; |
| 270 | hammer2_volconf_update(hmp, copyid); |
| 271 | failed: |
| 272 | hammer2_voldata_unlock(hmp); |
| 273 | return (error); |
| 274 | } |
| 275 | |
| 276 | /* |
| 277 | * Delete existing remote entry |
| 278 | */ |
| 279 | static int |
| 280 | hammer2_ioctl_remote_del(hammer2_inode_t *ip, void *data) |
| 281 | { |
| 282 | hammer2_ioc_remote_t *remote = data; |
| 283 | hammer2_pfs_t *pmp = ip->pmp; |
| 284 | hammer2_dev_t *hmp; |
| 285 | int copyid = remote->copyid; |
| 286 | int error = 0; |
| 287 | |
| 288 | hmp = pmp->pfs_hmps[0]; |
| 289 | if (hmp == NULL) |
| 290 | return (EINVAL); |
| 291 | if (copyid >= HAMMER2_COPYID_COUNT) |
| 292 | return (EINVAL); |
| 293 | remote->copy1.path[sizeof(remote->copy1.path) - 1] = 0; |
| 294 | hammer2_voldata_lock(hmp); |
| 295 | if (copyid < 0) { |
| 296 | for (copyid = 1; copyid < HAMMER2_COPYID_COUNT; ++copyid) { |
| 297 | if (hmp->voldata.copyinfo[copyid].copyid == 0) |
| 298 | continue; |
| 299 | if (strcmp(remote->copy1.path, |
| 300 | hmp->voldata.copyinfo[copyid].path) == 0) { |
| 301 | break; |
| 302 | } |
| 303 | } |
| 304 | if (copyid == HAMMER2_COPYID_COUNT) { |
| 305 | error = ENOENT; |
| 306 | goto failed; |
| 307 | } |
| 308 | } |
| 309 | hammer2_voldata_modify(hmp); |
| 310 | hmp->voldata.copyinfo[copyid].copyid = 0; |
| 311 | hammer2_volconf_update(hmp, copyid); |
| 312 | failed: |
| 313 | hammer2_voldata_unlock(hmp); |
| 314 | return (error); |
| 315 | } |
| 316 | |
| 317 | /* |
| 318 | * Replace existing remote entry |
| 319 | */ |
| 320 | static int |
| 321 | hammer2_ioctl_remote_rep(hammer2_inode_t *ip, void *data) |
| 322 | { |
| 323 | hammer2_ioc_remote_t *remote = data; |
| 324 | hammer2_dev_t *hmp; |
| 325 | int copyid = remote->copyid; |
| 326 | |
| 327 | hmp = ip->pmp->pfs_hmps[0]; |
| 328 | if (hmp == NULL) |
| 329 | return (EINVAL); |
| 330 | if (copyid < 0 || copyid >= HAMMER2_COPYID_COUNT) |
| 331 | return (EINVAL); |
| 332 | |
| 333 | hammer2_voldata_lock(hmp); |
| 334 | hammer2_voldata_modify(hmp); |
| 335 | /*hammer2_volconf_update(hmp, copyid);*/ |
| 336 | hammer2_voldata_unlock(hmp); |
| 337 | |
| 338 | return(0); |
| 339 | } |
| 340 | |
| 341 | /* |
| 342 | * Retrieve communications socket |
| 343 | */ |
| 344 | static int |
| 345 | hammer2_ioctl_socket_get(hammer2_inode_t *ip, void *data) |
| 346 | { |
| 347 | return (EOPNOTSUPP); |
| 348 | } |
| 349 | |
| 350 | /* |
| 351 | * Set communications socket for connection |
| 352 | */ |
| 353 | static int |
| 354 | hammer2_ioctl_socket_set(hammer2_inode_t *ip, void *data) |
| 355 | { |
| 356 | hammer2_ioc_remote_t *remote = data; |
| 357 | hammer2_dev_t *hmp; |
| 358 | int copyid = remote->copyid; |
| 359 | |
| 360 | hmp = ip->pmp->pfs_hmps[0]; |
| 361 | if (hmp == NULL) |
| 362 | return (EINVAL); |
| 363 | if (copyid < 0 || copyid >= HAMMER2_COPYID_COUNT) |
| 364 | return (EINVAL); |
| 365 | |
| 366 | hammer2_voldata_lock(hmp); |
| 367 | hammer2_voldata_unlock(hmp); |
| 368 | |
| 369 | return(0); |
| 370 | } |
| 371 | |
| 372 | /* |
| 373 | * Used to scan and retrieve PFS information. PFS's are directories under |
| 374 | * the super-root. |
| 375 | * |
| 376 | * To scan PFSs pass name_key=0. The function will scan for the next |
| 377 | * PFS and set all fields, as well as set name_next to the next key. |
| 378 | * When no PFSs remain, name_next is set to (hammer2_key_t)-1. |
| 379 | * |
| 380 | * To retrieve a particular PFS by key, specify the key but note that |
| 381 | * the ioctl will return the lowest key >= specified_key, so the caller |
| 382 | * must verify the key. |
| 383 | * |
| 384 | * To retrieve the PFS associated with the file descriptor, pass |
| 385 | * name_key set to (hammer2_key_t)-1. |
| 386 | */ |
| 387 | static int |
| 388 | hammer2_ioctl_pfs_get(hammer2_inode_t *ip, void *data) |
| 389 | { |
| 390 | const hammer2_inode_data_t *ripdata; |
| 391 | hammer2_dev_t *hmp; |
| 392 | hammer2_ioc_pfs_t *pfs; |
| 393 | hammer2_chain_t *parent; |
| 394 | hammer2_chain_t *chain; |
| 395 | hammer2_key_t key_next; |
| 396 | hammer2_key_t save_key; |
| 397 | int cache_index = -1; |
| 398 | int error; |
| 399 | |
| 400 | hmp = ip->pmp->pfs_hmps[0]; |
| 401 | if (hmp == NULL) |
| 402 | return (EINVAL); |
| 403 | |
| 404 | pfs = data; |
| 405 | save_key = pfs->name_key; |
| 406 | error = 0; |
| 407 | |
| 408 | /* |
| 409 | * Setup |
| 410 | */ |
| 411 | if (save_key == (hammer2_key_t)-1) { |
| 412 | hammer2_inode_lock(ip->pmp->iroot, 0); |
| 413 | parent = NULL; |
| 414 | chain = hammer2_inode_chain(hmp->spmp->iroot, 0, |
| 415 | HAMMER2_RESOLVE_ALWAYS | |
| 416 | HAMMER2_RESOLVE_SHARED); |
| 417 | } else { |
| 418 | hammer2_inode_lock(hmp->spmp->iroot, 0); |
| 419 | parent = hammer2_inode_chain(hmp->spmp->iroot, 0, |
| 420 | HAMMER2_RESOLVE_ALWAYS | |
| 421 | HAMMER2_RESOLVE_SHARED); |
| 422 | chain = hammer2_chain_lookup(&parent, &key_next, |
| 423 | pfs->name_key, HAMMER2_KEY_MAX, |
| 424 | &cache_index, |
| 425 | HAMMER2_LOOKUP_SHARED); |
| 426 | } |
| 427 | |
| 428 | /* |
| 429 | * Locate next PFS |
| 430 | */ |
| 431 | while (chain) { |
| 432 | if (chain->bref.type == HAMMER2_BREF_TYPE_INODE) |
| 433 | break; |
| 434 | if (parent == NULL) { |
| 435 | hammer2_chain_unlock(chain); |
| 436 | hammer2_chain_drop(chain); |
| 437 | chain = NULL; |
| 438 | break; |
| 439 | } |
| 440 | chain = hammer2_chain_next(&parent, chain, &key_next, |
| 441 | key_next, HAMMER2_KEY_MAX, |
| 442 | &cache_index, |
| 443 | HAMMER2_LOOKUP_SHARED); |
| 444 | } |
| 445 | |
| 446 | /* |
| 447 | * Load the data being returned by the ioctl. |
| 448 | */ |
| 449 | if (chain) { |
| 450 | ripdata = &chain->data->ipdata; |
| 451 | pfs->name_key = ripdata->meta.name_key; |
| 452 | pfs->pfs_type = ripdata->meta.pfs_type; |
| 453 | pfs->pfs_subtype = ripdata->meta.pfs_subtype; |
| 454 | pfs->pfs_clid = ripdata->meta.pfs_clid; |
| 455 | pfs->pfs_fsid = ripdata->meta.pfs_fsid; |
| 456 | KKASSERT(ripdata->meta.name_len < sizeof(pfs->name)); |
| 457 | bcopy(ripdata->filename, pfs->name, ripdata->meta.name_len); |
| 458 | pfs->name[ripdata->meta.name_len] = 0; |
| 459 | ripdata = NULL; /* safety */ |
| 460 | |
| 461 | /* |
| 462 | * Calculate name_next, if any. |
| 463 | */ |
| 464 | if (parent == NULL) { |
| 465 | pfs->name_next = (hammer2_key_t)-1; |
| 466 | } else { |
| 467 | chain = hammer2_chain_next(&parent, chain, &key_next, |
| 468 | key_next, HAMMER2_KEY_MAX, |
| 469 | &cache_index, |
| 470 | HAMMER2_LOOKUP_SHARED); |
| 471 | if (chain) |
| 472 | pfs->name_next = chain->bref.key; |
| 473 | else |
| 474 | pfs->name_next = (hammer2_key_t)-1; |
| 475 | } |
| 476 | } else { |
| 477 | pfs->name_next = (hammer2_key_t)-1; |
| 478 | error = ENOENT; |
| 479 | } |
| 480 | |
| 481 | /* |
| 482 | * Cleanup |
| 483 | */ |
| 484 | if (chain) { |
| 485 | hammer2_chain_unlock(chain); |
| 486 | hammer2_chain_drop(chain); |
| 487 | } |
| 488 | if (parent) { |
| 489 | hammer2_chain_unlock(parent); |
| 490 | hammer2_chain_drop(parent); |
| 491 | } |
| 492 | if (save_key == (hammer2_key_t)-1) { |
| 493 | hammer2_inode_unlock(ip->pmp->iroot); |
| 494 | } else { |
| 495 | hammer2_inode_unlock(hmp->spmp->iroot); |
| 496 | } |
| 497 | |
| 498 | return (error); |
| 499 | } |
| 500 | |
| 501 | /* |
| 502 | * Find a specific PFS by name |
| 503 | */ |
| 504 | static int |
| 505 | hammer2_ioctl_pfs_lookup(hammer2_inode_t *ip, void *data) |
| 506 | { |
| 507 | const hammer2_inode_data_t *ripdata; |
| 508 | hammer2_dev_t *hmp; |
| 509 | hammer2_ioc_pfs_t *pfs; |
| 510 | hammer2_chain_t *parent; |
| 511 | hammer2_chain_t *chain; |
| 512 | hammer2_key_t key_next; |
| 513 | hammer2_key_t lhc; |
| 514 | int cache_index = -1; |
| 515 | int error; |
| 516 | size_t len; |
| 517 | |
| 518 | hmp = ip->pmp->pfs_hmps[0]; |
| 519 | if (hmp == NULL) |
| 520 | return (EINVAL); |
| 521 | |
| 522 | pfs = data; |
| 523 | error = 0; |
| 524 | |
| 525 | hammer2_inode_lock(hmp->spmp->iroot, HAMMER2_RESOLVE_SHARED); |
| 526 | parent = hammer2_inode_chain(hmp->spmp->iroot, 0, |
| 527 | HAMMER2_RESOLVE_ALWAYS | |
| 528 | HAMMER2_RESOLVE_SHARED); |
| 529 | |
| 530 | pfs->name[sizeof(pfs->name) - 1] = 0; |
| 531 | len = strlen(pfs->name); |
| 532 | lhc = hammer2_dirhash(pfs->name, len); |
| 533 | |
| 534 | chain = hammer2_chain_lookup(&parent, &key_next, |
| 535 | lhc, lhc + HAMMER2_DIRHASH_LOMASK, |
| 536 | &cache_index, |
| 537 | HAMMER2_LOOKUP_SHARED); |
| 538 | while (chain) { |
| 539 | if (chain->bref.type == HAMMER2_BREF_TYPE_INODE) { |
| 540 | ripdata = &chain->data->ipdata; |
| 541 | if (ripdata->meta.name_len == len && |
| 542 | bcmp(ripdata->filename, pfs->name, len) == 0) { |
| 543 | break; |
| 544 | } |
| 545 | ripdata = NULL; /* safety */ |
| 546 | } |
| 547 | chain = hammer2_chain_next(&parent, chain, &key_next, |
| 548 | key_next, |
| 549 | lhc + HAMMER2_DIRHASH_LOMASK, |
| 550 | &cache_index, |
| 551 | HAMMER2_LOOKUP_SHARED); |
| 552 | } |
| 553 | |
| 554 | /* |
| 555 | * Load the data being returned by the ioctl. |
| 556 | */ |
| 557 | if (chain) { |
| 558 | ripdata = &chain->data->ipdata; |
| 559 | pfs->name_key = ripdata->meta.name_key; |
| 560 | pfs->pfs_type = ripdata->meta.pfs_type; |
| 561 | pfs->pfs_subtype = ripdata->meta.pfs_subtype; |
| 562 | pfs->pfs_clid = ripdata->meta.pfs_clid; |
| 563 | pfs->pfs_fsid = ripdata->meta.pfs_fsid; |
| 564 | ripdata = NULL; |
| 565 | |
| 566 | hammer2_chain_unlock(chain); |
| 567 | hammer2_chain_drop(chain); |
| 568 | } else { |
| 569 | error = ENOENT; |
| 570 | } |
| 571 | if (parent) { |
| 572 | hammer2_chain_unlock(parent); |
| 573 | hammer2_chain_drop(parent); |
| 574 | } |
| 575 | hammer2_inode_unlock(hmp->spmp->iroot); |
| 576 | |
| 577 | return (error); |
| 578 | } |
| 579 | |
| 580 | /* |
| 581 | * Create a new PFS under the super-root |
| 582 | */ |
| 583 | static int |
| 584 | hammer2_ioctl_pfs_create(hammer2_inode_t *ip, void *data) |
| 585 | { |
| 586 | hammer2_inode_data_t *nipdata; |
| 587 | hammer2_chain_t *nchain; |
| 588 | hammer2_dev_t *hmp; |
| 589 | hammer2_dev_t *force_local; |
| 590 | hammer2_ioc_pfs_t *pfs; |
| 591 | hammer2_inode_t *nip; |
| 592 | hammer2_tid_t mtid; |
| 593 | int error; |
| 594 | |
| 595 | hmp = ip->pmp->pfs_hmps[0]; /* XXX */ |
| 596 | if (hmp == NULL) |
| 597 | return (EINVAL); |
| 598 | |
| 599 | pfs = data; |
| 600 | nip = NULL; |
| 601 | |
| 602 | if (pfs->name[0] == 0) |
| 603 | return(EINVAL); |
| 604 | pfs->name[sizeof(pfs->name) - 1] = 0; /* ensure 0-termination */ |
| 605 | |
| 606 | if (hammer2_ioctl_pfs_lookup(ip, pfs) == 0) |
| 607 | return(EEXIST); |
| 608 | |
| 609 | hammer2_trans_init(hmp->spmp, 0); |
| 610 | mtid = hammer2_trans_sub(hmp->spmp); |
| 611 | nip = hammer2_inode_create(hmp->spmp->iroot, NULL, NULL, |
| 612 | pfs->name, strlen(pfs->name), 0, |
| 613 | 1, HAMMER2_OBJTYPE_DIRECTORY, 0, |
| 614 | HAMMER2_INSERT_PFSROOT, &error); |
| 615 | if (error == 0) { |
| 616 | hammer2_inode_modify(nip); |
| 617 | nchain = hammer2_inode_chain(nip, 0, HAMMER2_RESOLVE_ALWAYS); |
| 618 | hammer2_chain_modify(nchain, mtid, 0, 0); |
| 619 | nipdata = &nchain->data->ipdata; |
| 620 | |
| 621 | nip->meta.pfs_type = pfs->pfs_type; |
| 622 | nip->meta.pfs_subtype = pfs->pfs_subtype; |
| 623 | nip->meta.pfs_clid = pfs->pfs_clid; |
| 624 | nip->meta.pfs_fsid = pfs->pfs_fsid; |
| 625 | nip->meta.op_flags |= HAMMER2_OPFLAG_PFSROOT; |
| 626 | |
| 627 | /* |
| 628 | * Set default compression and check algorithm. This |
| 629 | * can be changed later. |
| 630 | * |
| 631 | * Do not allow compression on PFS's with the special name |
| 632 | * "boot", the boot loader can't decompress (yet). |
| 633 | */ |
| 634 | nip->meta.comp_algo = |
| 635 | HAMMER2_ENC_ALGO(HAMMER2_COMP_NEWFS_DEFAULT); |
| 636 | nip->meta.check_algo = |
| 637 | HAMMER2_ENC_ALGO( HAMMER2_CHECK_ISCSI32); |
| 638 | |
| 639 | if (strcasecmp(pfs->name, "boot") == 0) { |
| 640 | nip->meta.comp_algo = |
| 641 | HAMMER2_ENC_ALGO(HAMMER2_COMP_AUTOZERO); |
| 642 | } |
| 643 | |
| 644 | /* |
| 645 | * Super-root isn't mounted, fsync it |
| 646 | */ |
| 647 | hammer2_chain_unlock(nchain); |
| 648 | hammer2_inode_ref(nip); |
| 649 | hammer2_inode_unlock(nip); |
| 650 | hammer2_inode_chain_sync(nip); |
| 651 | hammer2_inode_drop(nip); |
| 652 | |
| 653 | /* |
| 654 | * We still have a ref on the chain, relock and associate |
| 655 | * with an appropriate PFS. |
| 656 | */ |
| 657 | force_local = (hmp->hflags & HMNT2_LOCAL) ? hmp : NULL; |
| 658 | |
| 659 | hammer2_chain_lock(nchain, HAMMER2_RESOLVE_ALWAYS); |
| 660 | nipdata = &nchain->data->ipdata; |
| 661 | kprintf("ADD LOCAL PFS (IOCTL): %s\n", nipdata->filename); |
| 662 | hammer2_pfsalloc(nchain, nipdata, |
| 663 | nchain->bref.modify_tid, force_local); |
| 664 | |
| 665 | hammer2_chain_unlock(nchain); |
| 666 | hammer2_chain_drop(nchain); |
| 667 | |
| 668 | } |
| 669 | hammer2_trans_done(hmp->spmp); |
| 670 | |
| 671 | return (error); |
| 672 | } |
| 673 | |
| 674 | /* |
| 675 | * Destroy an existing PFS under the super-root |
| 676 | */ |
| 677 | static int |
| 678 | hammer2_ioctl_pfs_delete(hammer2_inode_t *ip, void *data) |
| 679 | { |
| 680 | hammer2_ioc_pfs_t *pfs = data; |
| 681 | hammer2_dev_t *hmp; |
| 682 | hammer2_pfs_t *spmp; |
| 683 | hammer2_xop_unlink_t *xop; |
| 684 | hammer2_inode_t *dip; |
| 685 | int error; |
| 686 | |
| 687 | pfs->name[sizeof(pfs->name) - 1] = 0; /* ensure termination */ |
| 688 | |
| 689 | hmp = ip->pmp->pfs_hmps[0]; |
| 690 | if (hmp == NULL) |
| 691 | return (EINVAL); |
| 692 | |
| 693 | spmp = hmp->spmp; |
| 694 | dip = spmp->iroot; |
| 695 | hammer2_trans_init(spmp, 0); |
| 696 | hammer2_inode_lock(dip, 0); |
| 697 | |
| 698 | xop = hammer2_xop_alloc(dip, HAMMER2_XOP_MODIFYING); |
| 699 | hammer2_xop_setname(&xop->head, pfs->name, strlen(pfs->name)); |
| 700 | xop->isdir = 2; |
| 701 | xop->dopermanent = 1; |
| 702 | hammer2_xop_start(&xop->head, hammer2_xop_unlink); |
| 703 | |
| 704 | error = hammer2_xop_collect(&xop->head, 0); |
| 705 | |
| 706 | hammer2_inode_unlock(dip); |
| 707 | hammer2_trans_done(spmp); |
| 708 | |
| 709 | return (error); |
| 710 | } |
| 711 | |
| 712 | static int |
| 713 | hammer2_ioctl_pfs_snapshot(hammer2_inode_t *ip, void *data) |
| 714 | { |
| 715 | hammer2_ioc_pfs_t *pfs = data; |
| 716 | hammer2_dev_t *hmp; |
| 717 | hammer2_chain_t *chain; |
| 718 | hammer2_tid_t mtid; |
| 719 | int error; |
| 720 | |
| 721 | if (pfs->name[0] == 0) |
| 722 | return(EINVAL); |
| 723 | if (pfs->name[sizeof(pfs->name)-1] != 0) |
| 724 | return(EINVAL); |
| 725 | |
| 726 | hmp = ip->pmp->pfs_hmps[0]; |
| 727 | if (hmp == NULL) |
| 728 | return (EINVAL); |
| 729 | |
| 730 | hammer2_vfs_sync(ip->pmp->mp, MNT_WAIT); |
| 731 | |
| 732 | hammer2_trans_init(ip->pmp, HAMMER2_TRANS_ISFLUSH); |
| 733 | mtid = hammer2_trans_sub(ip->pmp); |
| 734 | hammer2_inode_lock(ip, 0); |
| 735 | |
| 736 | chain = hammer2_inode_chain(ip, 0, HAMMER2_RESOLVE_ALWAYS); |
| 737 | error = hammer2_chain_snapshot(chain, pfs, mtid); |
| 738 | hammer2_chain_unlock(chain); |
| 739 | hammer2_chain_drop(chain); |
| 740 | |
| 741 | hammer2_inode_unlock(ip); |
| 742 | hammer2_trans_done(ip->pmp); |
| 743 | |
| 744 | return (error); |
| 745 | } |
| 746 | |
| 747 | /* |
| 748 | * Retrieve the raw inode structure, non-inclusive of node-specific data. |
| 749 | */ |
| 750 | static int |
| 751 | hammer2_ioctl_inode_get(hammer2_inode_t *ip, void *data) |
| 752 | { |
| 753 | hammer2_ioc_inode_t *ino; |
| 754 | hammer2_chain_t *chain; |
| 755 | int error; |
| 756 | int i; |
| 757 | |
| 758 | ino = data; |
| 759 | error = 0; |
| 760 | |
| 761 | hammer2_inode_lock(ip, HAMMER2_RESOLVE_SHARED); |
| 762 | ino->data_count = 0; |
| 763 | ino->inode_count = 0; |
| 764 | for (i = 0; i < ip->cluster.nchains; ++i) { |
| 765 | if ((chain = ip->cluster.array[i].chain) != NULL) { |
| 766 | if (ino->data_count < chain->bref.data_count) |
| 767 | ino->data_count = chain->bref.data_count; |
| 768 | if (ino->inode_count < chain->bref.inode_count) |
| 769 | ino->inode_count = chain->bref.inode_count; |
| 770 | } |
| 771 | } |
| 772 | bzero(&ino->ip_data, sizeof(ino->ip_data)); |
| 773 | ino->ip_data.meta = ip->meta; |
| 774 | ino->kdata = ip; |
| 775 | hammer2_inode_unlock(ip); |
| 776 | |
| 777 | return error; |
| 778 | } |
| 779 | |
| 780 | /* |
| 781 | * Set various parameters in an inode which cannot be set through |
| 782 | * normal filesystem VNOPS. |
| 783 | */ |
| 784 | static int |
| 785 | hammer2_ioctl_inode_set(hammer2_inode_t *ip, void *data) |
| 786 | { |
| 787 | hammer2_ioc_inode_t *ino = data; |
| 788 | int error = 0; |
| 789 | |
| 790 | hammer2_trans_init(ip->pmp, 0); |
| 791 | hammer2_inode_lock(ip, 0); |
| 792 | |
| 793 | if ((ino->flags & HAMMER2IOC_INODE_FLAG_CHECK) && |
| 794 | ip->meta.check_algo != ino->ip_data.meta.check_algo) { |
| 795 | hammer2_inode_modify(ip); |
| 796 | ip->meta.check_algo = ino->ip_data.meta.check_algo; |
| 797 | } |
| 798 | if ((ino->flags & HAMMER2IOC_INODE_FLAG_COMP) && |
| 799 | ip->meta.comp_algo != ino->ip_data.meta.comp_algo) { |
| 800 | hammer2_inode_modify(ip); |
| 801 | ip->meta.comp_algo = ino->ip_data.meta.comp_algo; |
| 802 | } |
| 803 | ino->kdata = ip; |
| 804 | |
| 805 | /* Ignore these flags for now...*/ |
| 806 | if ((ino->flags & HAMMER2IOC_INODE_FLAG_IQUOTA) && |
| 807 | ip->meta.inode_quota != ino->ip_data.meta.inode_quota) { |
| 808 | hammer2_inode_modify(ip); |
| 809 | ip->meta.inode_quota = ino->ip_data.meta.inode_quota; |
| 810 | } |
| 811 | if ((ino->flags & HAMMER2IOC_INODE_FLAG_DQUOTA) && |
| 812 | ip->meta.data_quota != ino->ip_data.meta.data_quota) { |
| 813 | hammer2_inode_modify(ip); |
| 814 | ip->meta.data_quota = ino->ip_data.meta.data_quota; |
| 815 | } |
| 816 | if ((ino->flags & HAMMER2IOC_INODE_FLAG_COPIES) && |
| 817 | ip->meta.ncopies != ino->ip_data.meta.ncopies) { |
| 818 | hammer2_inode_modify(ip); |
| 819 | ip->meta.ncopies = ino->ip_data.meta.ncopies; |
| 820 | } |
| 821 | hammer2_inode_unlock(ip); |
| 822 | hammer2_trans_done(ip->pmp); |
| 823 | |
| 824 | return (error); |
| 825 | } |
| 826 | |
| 827 | static |
| 828 | int |
| 829 | hammer2_ioctl_debug_dump(hammer2_inode_t *ip) |
| 830 | { |
| 831 | hammer2_chain_t *chain; |
| 832 | int count = 1000; |
| 833 | int i; |
| 834 | |
| 835 | for (i = 0; i < ip->cluster.nchains; ++i) { |
| 836 | chain = ip->cluster.array[i].chain; |
| 837 | if (chain == NULL) |
| 838 | continue; |
| 839 | hammer2_dump_chain(chain, 0, &count, 'i'); |
| 840 | } |
| 841 | return 0; |
| 842 | } |
| 843 | |
| 844 | /* |
| 845 | * Executes one flush/free pass per call. If trying to recover |
| 846 | * data we just freed up a moment ago it can take up to six passes |
| 847 | * to fully free the blocks. Note that passes occur automatically based |
| 848 | * on free space as the storage fills up, but manual passes may be needed |
| 849 | * if storage becomes almost completely full. |
| 850 | */ |
| 851 | static |
| 852 | int |
| 853 | hammer2_ioctl_bulkfree_scan(hammer2_inode_t *ip, void *data) |
| 854 | { |
| 855 | hammer2_ioc_bulkfree_t *bfi = data; |
| 856 | hammer2_dev_t *hmp; |
| 857 | int error; |
| 858 | |
| 859 | hmp = ip->pmp->pfs_hmps[0]; |
| 860 | if (hmp == NULL) |
| 861 | return (EINVAL); |
| 862 | |
| 863 | error = hammer2_bulkfree_pass(hmp, bfi); |
| 864 | |
| 865 | return error; |
| 866 | } |