| 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_inode_comp_set(hammer2_inode_t *ip, void *data); |
| 61 | //static int hammer2_ioctl_inode_comp_rec_set(hammer2_inode_t *ip, void *data); |
| 62 | //static int hammer2_ioctl_inode_comp_rec_set2(hammer2_inode_t *ip, void *data); |
| 63 | |
| 64 | int |
| 65 | hammer2_ioctl(hammer2_inode_t *ip, u_long com, void *data, int fflag, |
| 66 | struct ucred *cred) |
| 67 | { |
| 68 | int error; |
| 69 | |
| 70 | /* |
| 71 | * Standard root cred checks, will be selectively ignored below |
| 72 | * for ioctls that do not require root creds. |
| 73 | */ |
| 74 | error = priv_check_cred(cred, PRIV_HAMMER_IOCTL, 0); |
| 75 | |
| 76 | switch(com) { |
| 77 | case HAMMER2IOC_VERSION_GET: |
| 78 | error = hammer2_ioctl_version_get(ip, data); |
| 79 | break; |
| 80 | case HAMMER2IOC_RECLUSTER: |
| 81 | if (error == 0) |
| 82 | error = hammer2_ioctl_recluster(ip, data); |
| 83 | break; |
| 84 | case HAMMER2IOC_REMOTE_SCAN: |
| 85 | if (error == 0) |
| 86 | error = hammer2_ioctl_remote_scan(ip, data); |
| 87 | break; |
| 88 | case HAMMER2IOC_REMOTE_ADD: |
| 89 | if (error == 0) |
| 90 | error = hammer2_ioctl_remote_add(ip, data); |
| 91 | break; |
| 92 | case HAMMER2IOC_REMOTE_DEL: |
| 93 | if (error == 0) |
| 94 | error = hammer2_ioctl_remote_del(ip, data); |
| 95 | break; |
| 96 | case HAMMER2IOC_REMOTE_REP: |
| 97 | if (error == 0) |
| 98 | error = hammer2_ioctl_remote_rep(ip, data); |
| 99 | break; |
| 100 | case HAMMER2IOC_SOCKET_GET: |
| 101 | if (error == 0) |
| 102 | error = hammer2_ioctl_socket_get(ip, data); |
| 103 | break; |
| 104 | case HAMMER2IOC_SOCKET_SET: |
| 105 | if (error == 0) |
| 106 | error = hammer2_ioctl_socket_set(ip, data); |
| 107 | break; |
| 108 | case HAMMER2IOC_PFS_GET: |
| 109 | if (error == 0) |
| 110 | error = hammer2_ioctl_pfs_get(ip, data); |
| 111 | break; |
| 112 | case HAMMER2IOC_PFS_LOOKUP: |
| 113 | if (error == 0) |
| 114 | error = hammer2_ioctl_pfs_lookup(ip, data); |
| 115 | break; |
| 116 | case HAMMER2IOC_PFS_CREATE: |
| 117 | if (error == 0) |
| 118 | error = hammer2_ioctl_pfs_create(ip, data); |
| 119 | break; |
| 120 | case HAMMER2IOC_PFS_DELETE: |
| 121 | if (error == 0) |
| 122 | error = hammer2_ioctl_pfs_delete(ip, data); |
| 123 | break; |
| 124 | case HAMMER2IOC_PFS_SNAPSHOT: |
| 125 | if (error == 0) |
| 126 | error = hammer2_ioctl_pfs_snapshot(ip, data); |
| 127 | break; |
| 128 | case HAMMER2IOC_INODE_GET: |
| 129 | error = hammer2_ioctl_inode_get(ip, data); |
| 130 | break; |
| 131 | case HAMMER2IOC_INODE_SET: |
| 132 | if (error == 0) |
| 133 | error = hammer2_ioctl_inode_set(ip, data); |
| 134 | break; |
| 135 | /*case HAMMER2IOC_INODE_COMP_SET: |
| 136 | error = hammer2_ioctl_inode_comp_set(ip, data); |
| 137 | break; |
| 138 | case HAMMER2IOC_INODE_COMP_REC_SET: |
| 139 | error = hammer2_ioctl_inode_comp_rec_set(ip, data); |
| 140 | break; |
| 141 | case HAMMER2IOC_INODE_COMP_REC_SET2: |
| 142 | error = hammer2_ioctl_inode_comp_rec_set2(ip, data); |
| 143 | break;*/ |
| 144 | default: |
| 145 | error = EOPNOTSUPP; |
| 146 | break; |
| 147 | } |
| 148 | return (error); |
| 149 | } |
| 150 | |
| 151 | /* |
| 152 | * Retrieve version and basic info |
| 153 | */ |
| 154 | static int |
| 155 | hammer2_ioctl_version_get(hammer2_inode_t *ip, void *data) |
| 156 | { |
| 157 | hammer2_mount_t *hmp = ip->pmp->cluster.focus->hmp; |
| 158 | hammer2_ioc_version_t *version = data; |
| 159 | |
| 160 | version->version = hmp->voldata.version; |
| 161 | return 0; |
| 162 | } |
| 163 | |
| 164 | static int |
| 165 | hammer2_ioctl_recluster(hammer2_inode_t *ip, void *data) |
| 166 | { |
| 167 | hammer2_ioc_recluster_t *recl = data; |
| 168 | struct file *fp; |
| 169 | |
| 170 | fp = holdfp(curproc->p_fd, recl->fd, -1); |
| 171 | if (fp) { |
| 172 | kprintf("reconnect to cluster\n"); |
| 173 | hammer2_cluster_reconnect(ip->pmp, fp); |
| 174 | return 0; |
| 175 | } else { |
| 176 | return EINVAL; |
| 177 | } |
| 178 | } |
| 179 | |
| 180 | /* |
| 181 | * Retrieve information about a remote |
| 182 | */ |
| 183 | static int |
| 184 | hammer2_ioctl_remote_scan(hammer2_inode_t *ip, void *data) |
| 185 | { |
| 186 | hammer2_mount_t *hmp = ip->pmp->cluster.focus->hmp; |
| 187 | hammer2_ioc_remote_t *remote = data; |
| 188 | int copyid = remote->copyid; |
| 189 | |
| 190 | if (copyid < 0 || copyid >= HAMMER2_COPYID_COUNT) |
| 191 | return (EINVAL); |
| 192 | |
| 193 | hammer2_voldata_lock(hmp); |
| 194 | remote->copy1 = hmp->voldata.copyinfo[copyid]; |
| 195 | hammer2_voldata_unlock(hmp, 0); |
| 196 | |
| 197 | /* |
| 198 | * Adjust nextid (GET only) |
| 199 | */ |
| 200 | while (++copyid < HAMMER2_COPYID_COUNT && |
| 201 | hmp->voldata.copyinfo[copyid].copyid == 0) { |
| 202 | ; |
| 203 | } |
| 204 | if (copyid == HAMMER2_COPYID_COUNT) |
| 205 | remote->nextid = -1; |
| 206 | else |
| 207 | remote->nextid = copyid; |
| 208 | |
| 209 | return(0); |
| 210 | } |
| 211 | |
| 212 | /* |
| 213 | * Add new remote entry |
| 214 | */ |
| 215 | static int |
| 216 | hammer2_ioctl_remote_add(hammer2_inode_t *ip, void *data) |
| 217 | { |
| 218 | hammer2_ioc_remote_t *remote = data; |
| 219 | hammer2_pfsmount_t *pmp = ip->pmp; |
| 220 | hammer2_mount_t *hmp; |
| 221 | int copyid = remote->copyid; |
| 222 | int error = 0; |
| 223 | |
| 224 | if (copyid >= HAMMER2_COPYID_COUNT) |
| 225 | return (EINVAL); |
| 226 | |
| 227 | hmp = pmp->cluster.focus->hmp; /* XXX */ |
| 228 | hammer2_voldata_lock(hmp); |
| 229 | if (copyid < 0) { |
| 230 | for (copyid = 1; copyid < HAMMER2_COPYID_COUNT; ++copyid) { |
| 231 | if (hmp->voldata.copyinfo[copyid].copyid == 0) |
| 232 | break; |
| 233 | } |
| 234 | if (copyid == HAMMER2_COPYID_COUNT) { |
| 235 | error = ENOSPC; |
| 236 | goto failed; |
| 237 | } |
| 238 | } |
| 239 | hammer2_modify_volume(hmp); |
| 240 | remote->copy1.copyid = copyid; |
| 241 | hmp->voldata.copyinfo[copyid] = remote->copy1; |
| 242 | hammer2_volconf_update(pmp, copyid); |
| 243 | failed: |
| 244 | hammer2_voldata_unlock(hmp, 1); |
| 245 | return (error); |
| 246 | } |
| 247 | |
| 248 | /* |
| 249 | * Delete existing remote entry |
| 250 | */ |
| 251 | static int |
| 252 | hammer2_ioctl_remote_del(hammer2_inode_t *ip, void *data) |
| 253 | { |
| 254 | hammer2_ioc_remote_t *remote = data; |
| 255 | hammer2_pfsmount_t *pmp = ip->pmp; |
| 256 | hammer2_mount_t *hmp; |
| 257 | int copyid = remote->copyid; |
| 258 | int error = 0; |
| 259 | |
| 260 | hmp = pmp->cluster.focus->hmp; /* XXX */ |
| 261 | if (copyid >= HAMMER2_COPYID_COUNT) |
| 262 | return (EINVAL); |
| 263 | remote->copy1.path[sizeof(remote->copy1.path) - 1] = 0; |
| 264 | hammer2_voldata_lock(hmp); |
| 265 | if (copyid < 0) { |
| 266 | for (copyid = 1; copyid < HAMMER2_COPYID_COUNT; ++copyid) { |
| 267 | if (hmp->voldata.copyinfo[copyid].copyid == 0) |
| 268 | continue; |
| 269 | if (strcmp(remote->copy1.path, |
| 270 | hmp->voldata.copyinfo[copyid].path) == 0) { |
| 271 | break; |
| 272 | } |
| 273 | } |
| 274 | if (copyid == HAMMER2_COPYID_COUNT) { |
| 275 | error = ENOENT; |
| 276 | goto failed; |
| 277 | } |
| 278 | } |
| 279 | hammer2_modify_volume(hmp); |
| 280 | hmp->voldata.copyinfo[copyid].copyid = 0; |
| 281 | hammer2_volconf_update(pmp, copyid); |
| 282 | failed: |
| 283 | hammer2_voldata_unlock(hmp, 1); |
| 284 | return (error); |
| 285 | } |
| 286 | |
| 287 | /* |
| 288 | * Replace existing remote entry |
| 289 | */ |
| 290 | static int |
| 291 | hammer2_ioctl_remote_rep(hammer2_inode_t *ip, void *data) |
| 292 | { |
| 293 | hammer2_ioc_remote_t *remote = data; |
| 294 | hammer2_mount_t *hmp; |
| 295 | int copyid = remote->copyid; |
| 296 | |
| 297 | hmp = ip->pmp->cluster.focus->hmp; /* XXX */ |
| 298 | |
| 299 | if (copyid < 0 || copyid >= HAMMER2_COPYID_COUNT) |
| 300 | return (EINVAL); |
| 301 | |
| 302 | hammer2_voldata_lock(hmp); |
| 303 | /*hammer2_volconf_update(pmp, copyid);*/ |
| 304 | hammer2_voldata_unlock(hmp, 1); |
| 305 | |
| 306 | return(0); |
| 307 | } |
| 308 | |
| 309 | /* |
| 310 | * Retrieve communications socket |
| 311 | */ |
| 312 | static int |
| 313 | hammer2_ioctl_socket_get(hammer2_inode_t *ip, void *data) |
| 314 | { |
| 315 | return (EOPNOTSUPP); |
| 316 | } |
| 317 | |
| 318 | /* |
| 319 | * Set communications socket for connection |
| 320 | */ |
| 321 | static int |
| 322 | hammer2_ioctl_socket_set(hammer2_inode_t *ip, void *data) |
| 323 | { |
| 324 | hammer2_ioc_remote_t *remote = data; |
| 325 | hammer2_mount_t *hmp; |
| 326 | int copyid = remote->copyid; |
| 327 | |
| 328 | hmp = ip->pmp->cluster.focus->hmp; /* XXX */ |
| 329 | if (copyid < 0 || copyid >= HAMMER2_COPYID_COUNT) |
| 330 | return (EINVAL); |
| 331 | |
| 332 | hammer2_voldata_lock(hmp); |
| 333 | hammer2_voldata_unlock(hmp, 0); |
| 334 | |
| 335 | return(0); |
| 336 | } |
| 337 | |
| 338 | /* |
| 339 | * Used to scan and retrieve PFS information. PFS's are directories under |
| 340 | * the super-root. |
| 341 | * |
| 342 | * To scan PFSs pass name_key=0. The function will scan for the next |
| 343 | * PFS and set all fields, as well as set name_next to the next key. |
| 344 | * When no PFSs remain, name_next is set to (hammer2_key_t)-1. |
| 345 | * |
| 346 | * To retrieve the PFS associated with the file descriptor, pass |
| 347 | * name_key set to (hammer2_key_t)-1. |
| 348 | */ |
| 349 | static int |
| 350 | hammer2_ioctl_pfs_get(hammer2_inode_t *ip, void *data) |
| 351 | { |
| 352 | hammer2_inode_data_t *ipdata; |
| 353 | hammer2_mount_t *hmp; |
| 354 | hammer2_ioc_pfs_t *pfs; |
| 355 | hammer2_cluster_t *cparent; |
| 356 | hammer2_cluster_t *rcluster; |
| 357 | hammer2_cluster_t *cluster; |
| 358 | hammer2_key_t key_next; |
| 359 | int error; |
| 360 | int ddflag; |
| 361 | |
| 362 | error = 0; |
| 363 | hmp = ip->pmp->cluster.focus->hmp; /* XXX */ |
| 364 | pfs = data; |
| 365 | cparent = hammer2_inode_lock_ex(hmp->sroot); |
| 366 | rcluster = hammer2_inode_lock_ex(ip->pmp->iroot); |
| 367 | |
| 368 | /* |
| 369 | * Search for the first key or specific key. Remember that keys |
| 370 | * can be returned in any order. |
| 371 | */ |
| 372 | if (pfs->name_key == 0) { |
| 373 | cluster = hammer2_cluster_lookup(cparent, &key_next, |
| 374 | 0, (hammer2_key_t)-1, |
| 375 | 0, &ddflag); |
| 376 | } else if (pfs->name_key == (hammer2_key_t)-1) { |
| 377 | ipdata = &hammer2_cluster_data(rcluster)->ipdata; |
| 378 | cluster = hammer2_cluster_lookup(cparent, &key_next, |
| 379 | ipdata->name_key, |
| 380 | ipdata->name_key, |
| 381 | 0, &ddflag); |
| 382 | ipdata = NULL; /* safety */ |
| 383 | } else { |
| 384 | cluster = hammer2_cluster_lookup(cparent, &key_next, |
| 385 | pfs->name_key, pfs->name_key, |
| 386 | 0, &ddflag); |
| 387 | } |
| 388 | hammer2_inode_unlock_ex(ip->pmp->iroot, rcluster); |
| 389 | |
| 390 | while (cluster && |
| 391 | hammer2_cluster_type(cluster) != HAMMER2_BREF_TYPE_INODE) { |
| 392 | cluster = hammer2_cluster_next(cparent, cluster, &key_next, |
| 393 | key_next, (hammer2_key_t)-1, |
| 394 | 0); |
| 395 | } |
| 396 | if (cluster) { |
| 397 | /* |
| 398 | * Load the data being returned by the ioctl. |
| 399 | */ |
| 400 | ipdata = &hammer2_cluster_data(cluster)->ipdata; |
| 401 | pfs->name_key = ipdata->name_key; |
| 402 | pfs->pfs_type = ipdata->pfs_type; |
| 403 | pfs->pfs_clid = ipdata->pfs_clid; |
| 404 | pfs->pfs_fsid = ipdata->pfs_fsid; |
| 405 | KKASSERT(ipdata->name_len < sizeof(pfs->name)); |
| 406 | bcopy(ipdata->filename, pfs->name, ipdata->name_len); |
| 407 | pfs->name[ipdata->name_len] = 0; |
| 408 | ipdata = NULL; /* safety */ |
| 409 | |
| 410 | /* |
| 411 | * Calculate the next field |
| 412 | */ |
| 413 | do { |
| 414 | cluster = hammer2_cluster_next(cparent, cluster, |
| 415 | &key_next, |
| 416 | 0, (hammer2_key_t)-1, |
| 417 | 0); |
| 418 | } while (cluster && |
| 419 | hammer2_cluster_type(cluster) != |
| 420 | HAMMER2_BREF_TYPE_INODE); |
| 421 | if (cluster) { |
| 422 | ipdata = &hammer2_cluster_data(cluster)->ipdata; |
| 423 | pfs->name_next = ipdata->name_key; |
| 424 | hammer2_cluster_unlock(cluster); |
| 425 | } else { |
| 426 | pfs->name_next = (hammer2_key_t)-1; |
| 427 | } |
| 428 | } else { |
| 429 | pfs->name_next = (hammer2_key_t)-1; |
| 430 | error = ENOENT; |
| 431 | } |
| 432 | hammer2_inode_unlock_ex(hmp->sroot, cparent); |
| 433 | |
| 434 | return (error); |
| 435 | } |
| 436 | |
| 437 | /* |
| 438 | * Find a specific PFS by name |
| 439 | */ |
| 440 | static int |
| 441 | hammer2_ioctl_pfs_lookup(hammer2_inode_t *ip, void *data) |
| 442 | { |
| 443 | hammer2_inode_data_t *ipdata; |
| 444 | hammer2_mount_t *hmp; |
| 445 | hammer2_ioc_pfs_t *pfs; |
| 446 | hammer2_cluster_t *cparent; |
| 447 | hammer2_cluster_t *cluster; |
| 448 | hammer2_key_t key_next; |
| 449 | hammer2_key_t lhc; |
| 450 | int error; |
| 451 | int ddflag; |
| 452 | size_t len; |
| 453 | |
| 454 | error = 0; |
| 455 | hmp = ip->pmp->cluster.focus->hmp; /* XXX */ |
| 456 | pfs = data; |
| 457 | cparent = hammer2_inode_lock_sh(hmp->sroot); |
| 458 | |
| 459 | pfs->name[sizeof(pfs->name) - 1] = 0; |
| 460 | len = strlen(pfs->name); |
| 461 | lhc = hammer2_dirhash(pfs->name, len); |
| 462 | |
| 463 | cluster = hammer2_cluster_lookup(cparent, &key_next, |
| 464 | lhc, lhc + HAMMER2_DIRHASH_LOMASK, |
| 465 | HAMMER2_LOOKUP_SHARED, &ddflag); |
| 466 | while (cluster) { |
| 467 | if (hammer2_cluster_type(cluster) == HAMMER2_BREF_TYPE_INODE) { |
| 468 | ipdata = &hammer2_cluster_data(cluster)->ipdata; |
| 469 | if (ipdata->name_len == len && |
| 470 | bcmp(ipdata->filename, pfs->name, len) == 0) { |
| 471 | break; |
| 472 | } |
| 473 | ipdata = NULL; /* safety */ |
| 474 | } |
| 475 | cluster = hammer2_cluster_next(cparent, cluster, &key_next, |
| 476 | key_next, |
| 477 | lhc + HAMMER2_DIRHASH_LOMASK, |
| 478 | HAMMER2_LOOKUP_SHARED); |
| 479 | } |
| 480 | |
| 481 | /* |
| 482 | * Load the data being returned by the ioctl. |
| 483 | */ |
| 484 | if (cluster) { |
| 485 | ipdata = &hammer2_cluster_data(cluster)->ipdata; |
| 486 | pfs->name_key = ipdata->name_key; |
| 487 | pfs->pfs_type = ipdata->pfs_type; |
| 488 | pfs->pfs_clid = ipdata->pfs_clid; |
| 489 | pfs->pfs_fsid = ipdata->pfs_fsid; |
| 490 | ipdata = NULL; |
| 491 | |
| 492 | hammer2_cluster_unlock(cluster); |
| 493 | } else { |
| 494 | error = ENOENT; |
| 495 | } |
| 496 | hammer2_inode_unlock_sh(hmp->sroot, cparent); |
| 497 | |
| 498 | return (error); |
| 499 | } |
| 500 | |
| 501 | /* |
| 502 | * Create a new PFS under the super-root |
| 503 | */ |
| 504 | static int |
| 505 | hammer2_ioctl_pfs_create(hammer2_inode_t *ip, void *data) |
| 506 | { |
| 507 | hammer2_inode_data_t *nipdata; |
| 508 | hammer2_mount_t *hmp; |
| 509 | hammer2_ioc_pfs_t *pfs; |
| 510 | hammer2_inode_t *nip; |
| 511 | hammer2_cluster_t *ncluster; |
| 512 | hammer2_trans_t trans; |
| 513 | int error; |
| 514 | |
| 515 | hmp = ip->pmp->cluster.focus->hmp; /* XXX */ |
| 516 | pfs = data; |
| 517 | nip = NULL; |
| 518 | |
| 519 | if (pfs->name[0] == 0) |
| 520 | return(EINVAL); |
| 521 | pfs->name[sizeof(pfs->name) - 1] = 0; /* ensure 0-termination */ |
| 522 | |
| 523 | hammer2_trans_init(&trans, ip->pmp, NULL, HAMMER2_TRANS_NEWINODE); |
| 524 | nip = hammer2_inode_create(&trans, hmp->sroot, NULL, NULL, |
| 525 | pfs->name, strlen(pfs->name), |
| 526 | &ncluster, &error); |
| 527 | if (error == 0) { |
| 528 | nipdata = hammer2_cluster_modify_ip(&trans, nip, ncluster, |
| 529 | HAMMER2_MODIFY_ASSERTNOCOPY); |
| 530 | nipdata->pfs_type = pfs->pfs_type; |
| 531 | nipdata->pfs_clid = pfs->pfs_clid; |
| 532 | nipdata->pfs_fsid = pfs->pfs_fsid; |
| 533 | |
| 534 | /* |
| 535 | * Do not allow compression on PFS's with the special name |
| 536 | * "boot", the boot loader can't decompress (yet). |
| 537 | */ |
| 538 | if (strcmp(pfs->name, "boot") == 0) |
| 539 | nipdata->comp_algo = HAMMER2_COMP_AUTOZERO; |
| 540 | hammer2_inode_unlock_ex(nip, ncluster); |
| 541 | } |
| 542 | hammer2_trans_done(&trans); |
| 543 | |
| 544 | return (error); |
| 545 | } |
| 546 | |
| 547 | /* |
| 548 | * Destroy an existing PFS under the super-root |
| 549 | */ |
| 550 | static int |
| 551 | hammer2_ioctl_pfs_delete(hammer2_inode_t *ip, void *data) |
| 552 | { |
| 553 | hammer2_mount_t *hmp; |
| 554 | hammer2_ioc_pfs_t *pfs = data; |
| 555 | hammer2_trans_t trans; |
| 556 | int error; |
| 557 | |
| 558 | hmp = ip->pmp->cluster.focus->hmp; /* XXX */ |
| 559 | hammer2_trans_init(&trans, ip->pmp, NULL, 0); |
| 560 | error = hammer2_unlink_file(&trans, hmp->sroot, |
| 561 | pfs->name, strlen(pfs->name), |
| 562 | 2, NULL, NULL); |
| 563 | hammer2_trans_done(&trans); |
| 564 | |
| 565 | return (error); |
| 566 | } |
| 567 | |
| 568 | static int |
| 569 | hammer2_ioctl_pfs_snapshot(hammer2_inode_t *ip, void *data) |
| 570 | { |
| 571 | hammer2_ioc_pfs_t *pfs = data; |
| 572 | hammer2_trans_t trans; |
| 573 | hammer2_cluster_t *cparent; |
| 574 | int error; |
| 575 | |
| 576 | if (pfs->name[0] == 0) |
| 577 | return(EINVAL); |
| 578 | if (pfs->name[sizeof(pfs->name)-1] != 0) |
| 579 | return(EINVAL); |
| 580 | |
| 581 | hammer2_vfs_sync(ip->pmp->mp, MNT_WAIT); |
| 582 | |
| 583 | hammer2_trans_init(&trans, ip->pmp, NULL, HAMMER2_TRANS_NEWINODE); |
| 584 | cparent = hammer2_inode_lock_ex(ip); |
| 585 | error = hammer2_cluster_snapshot(&trans, cparent, pfs); |
| 586 | hammer2_inode_unlock_ex(ip, cparent); |
| 587 | hammer2_trans_done(&trans); |
| 588 | |
| 589 | return (error); |
| 590 | } |
| 591 | |
| 592 | /* |
| 593 | * Retrieve the raw inode structure |
| 594 | */ |
| 595 | static int |
| 596 | hammer2_ioctl_inode_get(hammer2_inode_t *ip, void *data) |
| 597 | { |
| 598 | hammer2_ioc_inode_t *ino = data; |
| 599 | hammer2_inode_data_t *ipdata; |
| 600 | hammer2_cluster_t *cparent; |
| 601 | |
| 602 | cparent = hammer2_inode_lock_sh(ip); |
| 603 | ipdata = &hammer2_cluster_data(cparent)->ipdata; |
| 604 | ino->ip_data = *ipdata; |
| 605 | ino->kdata = ip; |
| 606 | hammer2_inode_unlock_sh(ip, cparent); |
| 607 | |
| 608 | return (0); |
| 609 | } |
| 610 | |
| 611 | /* |
| 612 | * Set various parameters in an inode which cannot be set through |
| 613 | * normal filesystem VNOPS. |
| 614 | */ |
| 615 | static int |
| 616 | hammer2_ioctl_inode_set(hammer2_inode_t *ip, void *data) |
| 617 | { |
| 618 | hammer2_inode_data_t *ipdata; |
| 619 | hammer2_ioc_inode_t *ino = data; |
| 620 | hammer2_cluster_t *cparent; |
| 621 | hammer2_trans_t trans; |
| 622 | int error = 0; |
| 623 | |
| 624 | hammer2_trans_init(&trans, ip->pmp, NULL, 0); |
| 625 | cparent = hammer2_inode_lock_ex(ip); |
| 626 | ipdata = &hammer2_cluster_data(cparent)->ipdata; |
| 627 | |
| 628 | if (ino->ip_data.comp_algo != ipdata->comp_algo) { |
| 629 | ipdata = hammer2_cluster_modify_ip(&trans, ip, cparent, 0); |
| 630 | ipdata->comp_algo = ino->ip_data.comp_algo; |
| 631 | } |
| 632 | ino->kdata = ip; |
| 633 | |
| 634 | /* Ignore these flags for now...*/ |
| 635 | if (ino->flags & HAMMER2IOC_INODE_FLAG_IQUOTA) { |
| 636 | } |
| 637 | if (ino->flags & HAMMER2IOC_INODE_FLAG_DQUOTA) { |
| 638 | } |
| 639 | if (ino->flags & HAMMER2IOC_INODE_FLAG_COPIES) { |
| 640 | } |
| 641 | hammer2_trans_done(&trans); |
| 642 | hammer2_inode_unlock_ex(ip, cparent); |
| 643 | |
| 644 | return (error); |
| 645 | } |