| 1 | /* |
| 2 | * Copyright (c) 2011-2014 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 | |
| 65 | int |
| 66 | hammer2_ioctl(hammer2_inode_t *ip, u_long com, void *data, int fflag, |
| 67 | struct ucred *cred) |
| 68 | { |
| 69 | int error; |
| 70 | |
| 71 | /* |
| 72 | * Standard root cred checks, will be selectively ignored below |
| 73 | * for ioctls that do not require root creds. |
| 74 | */ |
| 75 | error = priv_check_cred(cred, PRIV_HAMMER_IOCTL, 0); |
| 76 | |
| 77 | switch(com) { |
| 78 | case HAMMER2IOC_VERSION_GET: |
| 79 | error = hammer2_ioctl_version_get(ip, data); |
| 80 | break; |
| 81 | case HAMMER2IOC_RECLUSTER: |
| 82 | if (error == 0) |
| 83 | error = hammer2_ioctl_recluster(ip, data); |
| 84 | break; |
| 85 | case HAMMER2IOC_REMOTE_SCAN: |
| 86 | if (error == 0) |
| 87 | error = hammer2_ioctl_remote_scan(ip, data); |
| 88 | break; |
| 89 | case HAMMER2IOC_REMOTE_ADD: |
| 90 | if (error == 0) |
| 91 | error = hammer2_ioctl_remote_add(ip, data); |
| 92 | break; |
| 93 | case HAMMER2IOC_REMOTE_DEL: |
| 94 | if (error == 0) |
| 95 | error = hammer2_ioctl_remote_del(ip, data); |
| 96 | break; |
| 97 | case HAMMER2IOC_REMOTE_REP: |
| 98 | if (error == 0) |
| 99 | error = hammer2_ioctl_remote_rep(ip, data); |
| 100 | break; |
| 101 | case HAMMER2IOC_SOCKET_GET: |
| 102 | if (error == 0) |
| 103 | error = hammer2_ioctl_socket_get(ip, data); |
| 104 | break; |
| 105 | case HAMMER2IOC_SOCKET_SET: |
| 106 | if (error == 0) |
| 107 | error = hammer2_ioctl_socket_set(ip, data); |
| 108 | break; |
| 109 | case HAMMER2IOC_PFS_GET: |
| 110 | if (error == 0) |
| 111 | error = hammer2_ioctl_pfs_get(ip, data); |
| 112 | break; |
| 113 | case HAMMER2IOC_PFS_LOOKUP: |
| 114 | if (error == 0) |
| 115 | error = hammer2_ioctl_pfs_lookup(ip, data); |
| 116 | break; |
| 117 | case HAMMER2IOC_PFS_CREATE: |
| 118 | if (error == 0) |
| 119 | error = hammer2_ioctl_pfs_create(ip, data); |
| 120 | break; |
| 121 | case HAMMER2IOC_PFS_DELETE: |
| 122 | if (error == 0) |
| 123 | error = hammer2_ioctl_pfs_delete(ip, data); |
| 124 | break; |
| 125 | case HAMMER2IOC_PFS_SNAPSHOT: |
| 126 | if (error == 0) |
| 127 | error = hammer2_ioctl_pfs_snapshot(ip, data); |
| 128 | break; |
| 129 | case HAMMER2IOC_INODE_GET: |
| 130 | error = hammer2_ioctl_inode_get(ip, data); |
| 131 | break; |
| 132 | case HAMMER2IOC_INODE_SET: |
| 133 | if (error == 0) |
| 134 | error = hammer2_ioctl_inode_set(ip, data); |
| 135 | break; |
| 136 | /*case HAMMER2IOC_INODE_COMP_SET: |
| 137 | error = hammer2_ioctl_inode_comp_set(ip, data); |
| 138 | break; |
| 139 | case HAMMER2IOC_INODE_COMP_REC_SET: |
| 140 | error = hammer2_ioctl_inode_comp_rec_set(ip, data); |
| 141 | break; |
| 142 | case HAMMER2IOC_INODE_COMP_REC_SET2: |
| 143 | error = hammer2_ioctl_inode_comp_rec_set2(ip, data); |
| 144 | break;*/ |
| 145 | case HAMMER2IOC_DEBUG_DUMP: |
| 146 | error = hammer2_ioctl_debug_dump(ip); |
| 147 | break; |
| 148 | default: |
| 149 | error = EOPNOTSUPP; |
| 150 | break; |
| 151 | } |
| 152 | return (error); |
| 153 | } |
| 154 | |
| 155 | /* |
| 156 | * Retrieve version and basic info |
| 157 | */ |
| 158 | static int |
| 159 | hammer2_ioctl_version_get(hammer2_inode_t *ip, void *data) |
| 160 | { |
| 161 | hammer2_mount_t *hmp = ip->pmp->iroot->cluster.focus->hmp; |
| 162 | hammer2_ioc_version_t *version = data; |
| 163 | |
| 164 | version->version = hmp->voldata.version; |
| 165 | return 0; |
| 166 | } |
| 167 | |
| 168 | static int |
| 169 | hammer2_ioctl_recluster(hammer2_inode_t *ip, void *data) |
| 170 | { |
| 171 | hammer2_ioc_recluster_t *recl = data; |
| 172 | struct file *fp; |
| 173 | hammer2_cluster_t *cluster; |
| 174 | int error; |
| 175 | |
| 176 | fp = holdfp(curproc->p_fd, recl->fd, -1); |
| 177 | if (fp) { |
| 178 | kprintf("reconnect to cluster: "); |
| 179 | cluster = &ip->pmp->iroot->cluster; |
| 180 | if (cluster->nchains != 1 || cluster->focus == NULL) { |
| 181 | kprintf("not a local device mount\n"); |
| 182 | error = EINVAL; |
| 183 | } else { |
| 184 | hammer2_cluster_reconnect(cluster->focus->hmp, fp); |
| 185 | kprintf("ok\n"); |
| 186 | error = 0; |
| 187 | } |
| 188 | } else { |
| 189 | error = EINVAL; |
| 190 | } |
| 191 | return error; |
| 192 | } |
| 193 | |
| 194 | /* |
| 195 | * Retrieve information about a remote |
| 196 | */ |
| 197 | static int |
| 198 | hammer2_ioctl_remote_scan(hammer2_inode_t *ip, void *data) |
| 199 | { |
| 200 | hammer2_mount_t *hmp = ip->pmp->iroot->cluster.focus->hmp; |
| 201 | hammer2_ioc_remote_t *remote = data; |
| 202 | int copyid = remote->copyid; |
| 203 | |
| 204 | if (copyid < 0 || copyid >= HAMMER2_COPYID_COUNT) |
| 205 | return (EINVAL); |
| 206 | |
| 207 | hammer2_voldata_lock(hmp); |
| 208 | remote->copy1 = hmp->voldata.copyinfo[copyid]; |
| 209 | hammer2_voldata_unlock(hmp); |
| 210 | |
| 211 | /* |
| 212 | * Adjust nextid (GET only) |
| 213 | */ |
| 214 | while (++copyid < HAMMER2_COPYID_COUNT && |
| 215 | hmp->voldata.copyinfo[copyid].copyid == 0) { |
| 216 | ; |
| 217 | } |
| 218 | if (copyid == HAMMER2_COPYID_COUNT) |
| 219 | remote->nextid = -1; |
| 220 | else |
| 221 | remote->nextid = copyid; |
| 222 | |
| 223 | return(0); |
| 224 | } |
| 225 | |
| 226 | /* |
| 227 | * Add new remote entry |
| 228 | */ |
| 229 | static int |
| 230 | hammer2_ioctl_remote_add(hammer2_inode_t *ip, void *data) |
| 231 | { |
| 232 | hammer2_ioc_remote_t *remote = data; |
| 233 | hammer2_pfsmount_t *pmp = ip->pmp; |
| 234 | hammer2_mount_t *hmp; |
| 235 | int copyid = remote->copyid; |
| 236 | int error = 0; |
| 237 | |
| 238 | if (copyid >= HAMMER2_COPYID_COUNT) |
| 239 | return (EINVAL); |
| 240 | |
| 241 | hmp = pmp->iroot->cluster.focus->hmp; /* XXX */ |
| 242 | hammer2_voldata_lock(hmp); |
| 243 | if (copyid < 0) { |
| 244 | for (copyid = 1; copyid < HAMMER2_COPYID_COUNT; ++copyid) { |
| 245 | if (hmp->voldata.copyinfo[copyid].copyid == 0) |
| 246 | break; |
| 247 | } |
| 248 | if (copyid == HAMMER2_COPYID_COUNT) { |
| 249 | error = ENOSPC; |
| 250 | goto failed; |
| 251 | } |
| 252 | } |
| 253 | hammer2_voldata_modify(hmp); |
| 254 | remote->copy1.copyid = copyid; |
| 255 | hmp->voldata.copyinfo[copyid] = remote->copy1; |
| 256 | hammer2_volconf_update(hmp, copyid); |
| 257 | failed: |
| 258 | hammer2_voldata_unlock(hmp); |
| 259 | return (error); |
| 260 | } |
| 261 | |
| 262 | /* |
| 263 | * Delete existing remote entry |
| 264 | */ |
| 265 | static int |
| 266 | hammer2_ioctl_remote_del(hammer2_inode_t *ip, void *data) |
| 267 | { |
| 268 | hammer2_ioc_remote_t *remote = data; |
| 269 | hammer2_pfsmount_t *pmp = ip->pmp; |
| 270 | hammer2_mount_t *hmp; |
| 271 | int copyid = remote->copyid; |
| 272 | int error = 0; |
| 273 | |
| 274 | hmp = pmp->iroot->cluster.focus->hmp; /* XXX */ |
| 275 | if (copyid >= HAMMER2_COPYID_COUNT) |
| 276 | return (EINVAL); |
| 277 | remote->copy1.path[sizeof(remote->copy1.path) - 1] = 0; |
| 278 | hammer2_voldata_lock(hmp); |
| 279 | if (copyid < 0) { |
| 280 | for (copyid = 1; copyid < HAMMER2_COPYID_COUNT; ++copyid) { |
| 281 | if (hmp->voldata.copyinfo[copyid].copyid == 0) |
| 282 | continue; |
| 283 | if (strcmp(remote->copy1.path, |
| 284 | hmp->voldata.copyinfo[copyid].path) == 0) { |
| 285 | break; |
| 286 | } |
| 287 | } |
| 288 | if (copyid == HAMMER2_COPYID_COUNT) { |
| 289 | error = ENOENT; |
| 290 | goto failed; |
| 291 | } |
| 292 | } |
| 293 | hammer2_voldata_modify(hmp); |
| 294 | hmp->voldata.copyinfo[copyid].copyid = 0; |
| 295 | hammer2_volconf_update(hmp, copyid); |
| 296 | failed: |
| 297 | hammer2_voldata_unlock(hmp); |
| 298 | return (error); |
| 299 | } |
| 300 | |
| 301 | /* |
| 302 | * Replace existing remote entry |
| 303 | */ |
| 304 | static int |
| 305 | hammer2_ioctl_remote_rep(hammer2_inode_t *ip, void *data) |
| 306 | { |
| 307 | hammer2_ioc_remote_t *remote = data; |
| 308 | hammer2_mount_t *hmp; |
| 309 | int copyid = remote->copyid; |
| 310 | |
| 311 | hmp = ip->pmp->iroot->cluster.focus->hmp; /* XXX */ |
| 312 | |
| 313 | if (copyid < 0 || copyid >= HAMMER2_COPYID_COUNT) |
| 314 | return (EINVAL); |
| 315 | |
| 316 | hammer2_voldata_lock(hmp); |
| 317 | hammer2_voldata_modify(hmp); |
| 318 | /*hammer2_volconf_update(hmp, copyid);*/ |
| 319 | hammer2_voldata_unlock(hmp); |
| 320 | |
| 321 | return(0); |
| 322 | } |
| 323 | |
| 324 | /* |
| 325 | * Retrieve communications socket |
| 326 | */ |
| 327 | static int |
| 328 | hammer2_ioctl_socket_get(hammer2_inode_t *ip, void *data) |
| 329 | { |
| 330 | return (EOPNOTSUPP); |
| 331 | } |
| 332 | |
| 333 | /* |
| 334 | * Set communications socket for connection |
| 335 | */ |
| 336 | static int |
| 337 | hammer2_ioctl_socket_set(hammer2_inode_t *ip, void *data) |
| 338 | { |
| 339 | hammer2_ioc_remote_t *remote = data; |
| 340 | hammer2_mount_t *hmp; |
| 341 | int copyid = remote->copyid; |
| 342 | |
| 343 | hmp = ip->pmp->iroot->cluster.focus->hmp; /* XXX */ |
| 344 | if (copyid < 0 || copyid >= HAMMER2_COPYID_COUNT) |
| 345 | return (EINVAL); |
| 346 | |
| 347 | hammer2_voldata_lock(hmp); |
| 348 | hammer2_voldata_unlock(hmp); |
| 349 | |
| 350 | return(0); |
| 351 | } |
| 352 | |
| 353 | /* |
| 354 | * Used to scan and retrieve PFS information. PFS's are directories under |
| 355 | * the super-root. |
| 356 | * |
| 357 | * To scan PFSs pass name_key=0. The function will scan for the next |
| 358 | * PFS and set all fields, as well as set name_next to the next key. |
| 359 | * When no PFSs remain, name_next is set to (hammer2_key_t)-1. |
| 360 | * |
| 361 | * To retrieve the PFS associated with the file descriptor, pass |
| 362 | * name_key set to (hammer2_key_t)-1. |
| 363 | */ |
| 364 | static int |
| 365 | hammer2_ioctl_pfs_get(hammer2_inode_t *ip, void *data) |
| 366 | { |
| 367 | const hammer2_inode_data_t *ripdata; |
| 368 | hammer2_mount_t *hmp; |
| 369 | hammer2_ioc_pfs_t *pfs; |
| 370 | hammer2_cluster_t *cparent; |
| 371 | hammer2_cluster_t *rcluster; |
| 372 | hammer2_cluster_t *cluster; |
| 373 | hammer2_key_t key_next; |
| 374 | int error; |
| 375 | int ddflag; |
| 376 | |
| 377 | error = 0; |
| 378 | hmp = ip->pmp->iroot->cluster.focus->hmp; /* XXX */ |
| 379 | pfs = data; |
| 380 | cparent = hammer2_inode_lock_ex(hmp->spmp->iroot); |
| 381 | rcluster = hammer2_inode_lock_ex(ip->pmp->iroot); |
| 382 | |
| 383 | /* |
| 384 | * Search for the first key or specific key. Remember that keys |
| 385 | * can be returned in any order. |
| 386 | */ |
| 387 | if (pfs->name_key == 0) { |
| 388 | cluster = hammer2_cluster_lookup(cparent, &key_next, |
| 389 | 0, (hammer2_key_t)-1, |
| 390 | 0, &ddflag); |
| 391 | } else if (pfs->name_key == (hammer2_key_t)-1) { |
| 392 | ripdata = &hammer2_cluster_rdata(rcluster)->ipdata; |
| 393 | cluster = hammer2_cluster_lookup(cparent, &key_next, |
| 394 | ripdata->name_key, |
| 395 | ripdata->name_key, |
| 396 | 0, &ddflag); |
| 397 | ripdata = NULL; /* safety */ |
| 398 | } else { |
| 399 | cluster = hammer2_cluster_lookup(cparent, &key_next, |
| 400 | pfs->name_key, pfs->name_key, |
| 401 | 0, &ddflag); |
| 402 | } |
| 403 | hammer2_inode_unlock_ex(ip->pmp->iroot, rcluster); |
| 404 | |
| 405 | while (cluster && |
| 406 | hammer2_cluster_type(cluster) != HAMMER2_BREF_TYPE_INODE) { |
| 407 | cluster = hammer2_cluster_next(cparent, cluster, &key_next, |
| 408 | key_next, (hammer2_key_t)-1, |
| 409 | 0); |
| 410 | } |
| 411 | if (cluster) { |
| 412 | /* |
| 413 | * Load the data being returned by the ioctl. |
| 414 | */ |
| 415 | ripdata = &hammer2_cluster_rdata(cluster)->ipdata; |
| 416 | pfs->name_key = ripdata->name_key; |
| 417 | pfs->pfs_type = ripdata->pfs_type; |
| 418 | pfs->pfs_clid = ripdata->pfs_clid; |
| 419 | pfs->pfs_fsid = ripdata->pfs_fsid; |
| 420 | KKASSERT(ripdata->name_len < sizeof(pfs->name)); |
| 421 | bcopy(ripdata->filename, pfs->name, ripdata->name_len); |
| 422 | pfs->name[ripdata->name_len] = 0; |
| 423 | ripdata = NULL; /* safety */ |
| 424 | |
| 425 | /* |
| 426 | * Calculate the next field |
| 427 | */ |
| 428 | do { |
| 429 | cluster = hammer2_cluster_next(cparent, cluster, |
| 430 | &key_next, |
| 431 | 0, (hammer2_key_t)-1, |
| 432 | 0); |
| 433 | } while (cluster && |
| 434 | hammer2_cluster_type(cluster) != |
| 435 | HAMMER2_BREF_TYPE_INODE); |
| 436 | if (cluster) { |
| 437 | ripdata = &hammer2_cluster_rdata(cluster)->ipdata; |
| 438 | pfs->name_next = ripdata->name_key; |
| 439 | hammer2_cluster_unlock(cluster); |
| 440 | } else { |
| 441 | pfs->name_next = (hammer2_key_t)-1; |
| 442 | } |
| 443 | } else { |
| 444 | pfs->name_next = (hammer2_key_t)-1; |
| 445 | error = ENOENT; |
| 446 | } |
| 447 | hammer2_inode_unlock_ex(hmp->spmp->iroot, cparent); |
| 448 | |
| 449 | return (error); |
| 450 | } |
| 451 | |
| 452 | /* |
| 453 | * Find a specific PFS by name |
| 454 | */ |
| 455 | static int |
| 456 | hammer2_ioctl_pfs_lookup(hammer2_inode_t *ip, void *data) |
| 457 | { |
| 458 | const hammer2_inode_data_t *ripdata; |
| 459 | hammer2_mount_t *hmp; |
| 460 | hammer2_ioc_pfs_t *pfs; |
| 461 | hammer2_cluster_t *cparent; |
| 462 | hammer2_cluster_t *cluster; |
| 463 | hammer2_key_t key_next; |
| 464 | hammer2_key_t lhc; |
| 465 | int error; |
| 466 | int ddflag; |
| 467 | size_t len; |
| 468 | |
| 469 | error = 0; |
| 470 | hmp = ip->pmp->iroot->cluster.focus->hmp; /* XXX */ |
| 471 | pfs = data; |
| 472 | cparent = hammer2_inode_lock_sh(hmp->spmp->iroot); |
| 473 | |
| 474 | pfs->name[sizeof(pfs->name) - 1] = 0; |
| 475 | len = strlen(pfs->name); |
| 476 | lhc = hammer2_dirhash(pfs->name, len); |
| 477 | |
| 478 | cluster = hammer2_cluster_lookup(cparent, &key_next, |
| 479 | lhc, lhc + HAMMER2_DIRHASH_LOMASK, |
| 480 | HAMMER2_LOOKUP_SHARED, &ddflag); |
| 481 | while (cluster) { |
| 482 | if (hammer2_cluster_type(cluster) == HAMMER2_BREF_TYPE_INODE) { |
| 483 | ripdata = &hammer2_cluster_rdata(cluster)->ipdata; |
| 484 | if (ripdata->name_len == len && |
| 485 | bcmp(ripdata->filename, pfs->name, len) == 0) { |
| 486 | break; |
| 487 | } |
| 488 | ripdata = NULL; /* safety */ |
| 489 | } |
| 490 | cluster = hammer2_cluster_next(cparent, cluster, &key_next, |
| 491 | key_next, |
| 492 | lhc + HAMMER2_DIRHASH_LOMASK, |
| 493 | HAMMER2_LOOKUP_SHARED); |
| 494 | } |
| 495 | |
| 496 | /* |
| 497 | * Load the data being returned by the ioctl. |
| 498 | */ |
| 499 | if (cluster) { |
| 500 | ripdata = &hammer2_cluster_rdata(cluster)->ipdata; |
| 501 | pfs->name_key = ripdata->name_key; |
| 502 | pfs->pfs_type = ripdata->pfs_type; |
| 503 | pfs->pfs_clid = ripdata->pfs_clid; |
| 504 | pfs->pfs_fsid = ripdata->pfs_fsid; |
| 505 | ripdata = NULL; |
| 506 | |
| 507 | hammer2_cluster_unlock(cluster); |
| 508 | } else { |
| 509 | error = ENOENT; |
| 510 | } |
| 511 | hammer2_inode_unlock_sh(hmp->spmp->iroot, cparent); |
| 512 | |
| 513 | return (error); |
| 514 | } |
| 515 | |
| 516 | /* |
| 517 | * Create a new PFS under the super-root |
| 518 | */ |
| 519 | static int |
| 520 | hammer2_ioctl_pfs_create(hammer2_inode_t *ip, void *data) |
| 521 | { |
| 522 | hammer2_inode_data_t *nipdata; |
| 523 | hammer2_mount_t *hmp; |
| 524 | hammer2_ioc_pfs_t *pfs; |
| 525 | hammer2_inode_t *nip; |
| 526 | hammer2_cluster_t *ncluster; |
| 527 | hammer2_trans_t trans; |
| 528 | int error; |
| 529 | |
| 530 | hmp = ip->pmp->iroot->cluster.focus->hmp; /* XXX */ |
| 531 | pfs = data; |
| 532 | nip = NULL; |
| 533 | |
| 534 | if (pfs->name[0] == 0) |
| 535 | return(EINVAL); |
| 536 | pfs->name[sizeof(pfs->name) - 1] = 0; /* ensure 0-termination */ |
| 537 | |
| 538 | hammer2_trans_init(&trans, ip->pmp, HAMMER2_TRANS_NEWINODE); |
| 539 | nip = hammer2_inode_create(&trans, hmp->spmp->iroot, NULL, NULL, |
| 540 | pfs->name, strlen(pfs->name), |
| 541 | &ncluster, &error); |
| 542 | if (error == 0) { |
| 543 | nipdata = hammer2_cluster_modify_ip(&trans, nip, ncluster, 0); |
| 544 | nipdata->pfs_type = pfs->pfs_type; |
| 545 | nipdata->pfs_clid = pfs->pfs_clid; |
| 546 | nipdata->pfs_fsid = pfs->pfs_fsid; |
| 547 | |
| 548 | /* |
| 549 | * Do not allow compression on PFS's with the special name |
| 550 | * "boot", the boot loader can't decompress (yet). |
| 551 | */ |
| 552 | if (strcmp(pfs->name, "boot") == 0) |
| 553 | nipdata->comp_algo = HAMMER2_ENC_ALGO( |
| 554 | HAMMER2_COMP_AUTOZERO); |
| 555 | hammer2_cluster_modsync(ncluster); |
| 556 | hammer2_inode_unlock_ex(nip, ncluster); |
| 557 | } |
| 558 | hammer2_trans_done(&trans); |
| 559 | |
| 560 | return (error); |
| 561 | } |
| 562 | |
| 563 | /* |
| 564 | * Destroy an existing PFS under the super-root |
| 565 | */ |
| 566 | static int |
| 567 | hammer2_ioctl_pfs_delete(hammer2_inode_t *ip, void *data) |
| 568 | { |
| 569 | hammer2_mount_t *hmp; |
| 570 | hammer2_ioc_pfs_t *pfs = data; |
| 571 | hammer2_trans_t trans; |
| 572 | int error; |
| 573 | |
| 574 | hmp = ip->pmp->iroot->cluster.focus->hmp; /* XXX */ |
| 575 | hammer2_trans_init(&trans, ip->pmp, 0); |
| 576 | error = hammer2_unlink_file(&trans, hmp->spmp->iroot, |
| 577 | pfs->name, strlen(pfs->name), |
| 578 | 2, NULL, NULL, -1); |
| 579 | hammer2_trans_done(&trans); |
| 580 | |
| 581 | return (error); |
| 582 | } |
| 583 | |
| 584 | static int |
| 585 | hammer2_ioctl_pfs_snapshot(hammer2_inode_t *ip, void *data) |
| 586 | { |
| 587 | hammer2_ioc_pfs_t *pfs = data; |
| 588 | hammer2_trans_t trans; |
| 589 | hammer2_cluster_t *cparent; |
| 590 | int error; |
| 591 | |
| 592 | if (pfs->name[0] == 0) |
| 593 | return(EINVAL); |
| 594 | if (pfs->name[sizeof(pfs->name)-1] != 0) |
| 595 | return(EINVAL); |
| 596 | |
| 597 | hammer2_vfs_sync(ip->pmp->mp, MNT_WAIT); |
| 598 | |
| 599 | hammer2_trans_init(&trans, ip->pmp, |
| 600 | HAMMER2_TRANS_ISFLUSH | HAMMER2_TRANS_NEWINODE); |
| 601 | cparent = hammer2_inode_lock_ex(ip); |
| 602 | error = hammer2_cluster_snapshot(&trans, cparent, pfs); |
| 603 | hammer2_inode_unlock_ex(ip, cparent); |
| 604 | hammer2_trans_done(&trans); |
| 605 | |
| 606 | return (error); |
| 607 | } |
| 608 | |
| 609 | /* |
| 610 | * Retrieve the raw inode structure |
| 611 | */ |
| 612 | static int |
| 613 | hammer2_ioctl_inode_get(hammer2_inode_t *ip, void *data) |
| 614 | { |
| 615 | const hammer2_inode_data_t *ripdata; |
| 616 | hammer2_ioc_inode_t *ino; |
| 617 | hammer2_cluster_t *cparent; |
| 618 | |
| 619 | ino = data; |
| 620 | |
| 621 | cparent = hammer2_inode_lock_sh(ip); |
| 622 | ripdata = &hammer2_cluster_rdata(cparent)->ipdata; |
| 623 | ino->ip_data = *ripdata; |
| 624 | ino->kdata = ip; |
| 625 | hammer2_inode_unlock_sh(ip, cparent); |
| 626 | |
| 627 | return (0); |
| 628 | } |
| 629 | |
| 630 | /* |
| 631 | * Set various parameters in an inode which cannot be set through |
| 632 | * normal filesystem VNOPS. |
| 633 | */ |
| 634 | static int |
| 635 | hammer2_ioctl_inode_set(hammer2_inode_t *ip, void *data) |
| 636 | { |
| 637 | const hammer2_inode_data_t *ripdata; |
| 638 | hammer2_inode_data_t *wipdata; |
| 639 | hammer2_ioc_inode_t *ino = data; |
| 640 | hammer2_cluster_t *cparent; |
| 641 | hammer2_trans_t trans; |
| 642 | int error = 0; |
| 643 | int dosync = 0; |
| 644 | |
| 645 | hammer2_trans_init(&trans, ip->pmp, 0); |
| 646 | cparent = hammer2_inode_lock_ex(ip); |
| 647 | ripdata = &hammer2_cluster_rdata(cparent)->ipdata; |
| 648 | |
| 649 | if (ino->ip_data.check_algo != ripdata->check_algo) { |
| 650 | wipdata = hammer2_cluster_modify_ip(&trans, ip, cparent, 0); |
| 651 | wipdata->check_algo = ino->ip_data.check_algo; |
| 652 | ripdata = wipdata; /* safety */ |
| 653 | hammer2_cluster_setmethod_check(&trans, cparent, |
| 654 | wipdata->check_algo); |
| 655 | dosync = 1; |
| 656 | } |
| 657 | if (ino->ip_data.comp_algo != ripdata->comp_algo) { |
| 658 | wipdata = hammer2_cluster_modify_ip(&trans, ip, cparent, 0); |
| 659 | wipdata->comp_algo = ino->ip_data.comp_algo; |
| 660 | ripdata = wipdata; /* safety */ |
| 661 | dosync = 1; |
| 662 | } |
| 663 | ino->kdata = ip; |
| 664 | |
| 665 | /* Ignore these flags for now...*/ |
| 666 | if (ino->flags & HAMMER2IOC_INODE_FLAG_IQUOTA) { |
| 667 | } |
| 668 | if (ino->flags & HAMMER2IOC_INODE_FLAG_DQUOTA) { |
| 669 | } |
| 670 | if (ino->flags & HAMMER2IOC_INODE_FLAG_COPIES) { |
| 671 | } |
| 672 | if (dosync) |
| 673 | hammer2_cluster_modsync(cparent); |
| 674 | hammer2_trans_done(&trans); |
| 675 | hammer2_inode_unlock_ex(ip, cparent); |
| 676 | |
| 677 | return (error); |
| 678 | } |
| 679 | |
| 680 | static |
| 681 | int |
| 682 | hammer2_ioctl_debug_dump(hammer2_inode_t *ip) |
| 683 | { |
| 684 | hammer2_chain_t *chain; |
| 685 | int count = 1000; |
| 686 | int i; |
| 687 | |
| 688 | for (i = 0; i < ip->cluster.nchains; ++i) { |
| 689 | chain = ip->cluster.array[i]; |
| 690 | if (chain == NULL) |
| 691 | continue; |
| 692 | hammer2_dump_chain(chain, 0, &count, 'i'); |
| 693 | } |
| 694 | return 0; |
| 695 | } |