| 1 | /* |
| 2 | * XXX replace all the checks on object validity with |
| 3 | * calls to valid<object> |
| 4 | */ |
| 5 | /*- |
| 6 | * Copyright (c) 1997, 1998, 1999 |
| 7 | * Nan Yang Computer Services Limited. All rights reserved. |
| 8 | * |
| 9 | * Parts copyright (c) 1997, 1998 Cybernet Corporation, NetMAX project. |
| 10 | * |
| 11 | * Written by Greg Lehey |
| 12 | * |
| 13 | * This software is distributed under the so-called ``Berkeley |
| 14 | * License'': |
| 15 | * |
| 16 | * Redistribution and use in source and binary forms, with or without |
| 17 | * modification, are permitted provided that the following conditions |
| 18 | * are met: |
| 19 | * 1. Redistributions of source code must retain the above copyright |
| 20 | * notice, this list of conditions and the following disclaimer. |
| 21 | * 2. Redistributions in binary form must reproduce the above copyright |
| 22 | * notice, this list of conditions and the following disclaimer in the |
| 23 | * documentation and/or other materials provided with the distribution. |
| 24 | * 3. All advertising materials mentioning features or use of this software |
| 25 | * must display the following acknowledgement: |
| 26 | * This product includes software developed by Nan Yang Computer |
| 27 | * Services Limited. |
| 28 | * 4. Neither the name of the Company nor the names of its contributors |
| 29 | * may be used to endorse or promote products derived from this software |
| 30 | * without specific prior written permission. |
| 31 | * |
| 32 | * This software is provided ``as is'', and any express or implied |
| 33 | * warranties, including, but not limited to, the implied warranties of |
| 34 | * merchantability and fitness for a particular purpose are disclaimed. |
| 35 | * In no event shall the company or contributors be liable for any |
| 36 | * direct, indirect, incidental, special, exemplary, or consequential |
| 37 | * damages (including, but not limited to, procurement of substitute |
| 38 | * goods or services; loss of use, data, or profits; or business |
| 39 | * interruption) however caused and on any theory of liability, whether |
| 40 | * in contract, strict liability, or tort (including negligence or |
| 41 | * otherwise) arising in any way out of the use of this software, even if |
| 42 | * advised of the possibility of such damage. |
| 43 | * |
| 44 | * $Id: vinumioctl.c,v 1.14 2000/10/27 03:07:53 grog Exp grog $ |
| 45 | * $FreeBSD: src/sys/dev/vinum/vinumioctl.c,v 1.25.2.4 2002/02/03 00:44:19 grog Exp $ |
| 46 | * $DragonFly: src/sys/dev/raid/vinum/vinumioctl.c,v 1.5 2003/11/15 21:05:42 dillon Exp $ |
| 47 | */ |
| 48 | |
| 49 | #include "vinumhdr.h" |
| 50 | #include "request.h" |
| 51 | |
| 52 | #ifdef VINUMDEBUG |
| 53 | #include <sys/reboot.h> |
| 54 | #endif |
| 55 | |
| 56 | void attachobject(struct vinum_ioctl_msg *); |
| 57 | void detachobject(struct vinum_ioctl_msg *); |
| 58 | void renameobject(struct vinum_rename_msg *); |
| 59 | void replaceobject(struct vinum_ioctl_msg *); |
| 60 | void moveobject(struct vinum_ioctl_msg *); |
| 61 | |
| 62 | jmp_buf command_fail; /* return on a failed command */ |
| 63 | |
| 64 | /* ioctl routine */ |
| 65 | int |
| 66 | vinumioctl(dev_t dev, u_long cmd, caddr_t data, int flag, d_thread_t *td) |
| 67 | { |
| 68 | unsigned int objno; |
| 69 | int error = 0; |
| 70 | struct sd *sd; |
| 71 | struct plex *plex; |
| 72 | struct volume *vol; |
| 73 | unsigned int index; /* for transferring config info */ |
| 74 | unsigned int sdno; /* for transferring config info */ |
| 75 | int fe; /* free list element number */ |
| 76 | struct _ioctl_reply *ioctl_reply = (struct _ioctl_reply *) data; /* struct to return */ |
| 77 | |
| 78 | /* First, decide what we're looking at */ |
| 79 | switch (DEVTYPE(dev)) { |
| 80 | case VINUM_SUPERDEV_TYPE: /* ordinary super device */ |
| 81 | ioctl_reply = (struct _ioctl_reply *) data; /* save the address to reply to */ |
| 82 | switch (cmd) { |
| 83 | #ifdef VINUMDEBUG |
| 84 | case VINUM_DEBUG: |
| 85 | if (((struct debuginfo *) data)->changeit) /* change debug settings */ |
| 86 | debug = (((struct debuginfo *) data)->param); |
| 87 | else { |
| 88 | if (debug & DEBUG_REMOTEGDB) |
| 89 | boothowto |= RB_GDB; /* serial debug line */ |
| 90 | else |
| 91 | boothowto &= ~RB_GDB; /* local ddb */ |
| 92 | Debugger("vinum debug"); |
| 93 | } |
| 94 | ioctl_reply = (struct _ioctl_reply *) data; /* reinstate the address to reply to */ |
| 95 | ioctl_reply->error = 0; |
| 96 | return 0; |
| 97 | #endif |
| 98 | |
| 99 | case VINUM_CREATE: /* create a vinum object */ |
| 100 | error = lock_config(); /* get the config for us alone */ |
| 101 | if (error) /* can't do it, */ |
| 102 | return error; /* give up */ |
| 103 | error = setjmp(command_fail); /* come back here on error */ |
| 104 | if (error == 0) /* first time, */ |
| 105 | ioctl_reply->error = parse_user_config((char *) data, /* update the config */ |
| 106 | &keyword_set); |
| 107 | else if (ioctl_reply->error == 0) { /* longjmp, but no error status */ |
| 108 | ioctl_reply->error = EINVAL; /* note that something's up */ |
| 109 | ioctl_reply->msg[0] = '\0'; /* no message? */ |
| 110 | } |
| 111 | unlock_config(); |
| 112 | return 0; /* must be 0 to return the real error info */ |
| 113 | |
| 114 | case VINUM_GETCONFIG: /* get the configuration information */ |
| 115 | bcopy(&vinum_conf, data, sizeof(vinum_conf)); |
| 116 | return 0; |
| 117 | |
| 118 | /* start configuring the subsystem */ |
| 119 | case VINUM_STARTCONFIG: |
| 120 | return start_config(*(int *) data); /* just lock it. Parameter is 'force' */ |
| 121 | |
| 122 | /* |
| 123 | * Move the individual parts of the config to user space. |
| 124 | * |
| 125 | * Specify the index of the object in the first word of data, |
| 126 | * and return the object there |
| 127 | */ |
| 128 | case VINUM_DRIVECONFIG: |
| 129 | index = *(int *) data; /* get the index */ |
| 130 | if (index >= (unsigned) vinum_conf.drives_allocated) /* can't do it */ |
| 131 | return ENXIO; /* bang */ |
| 132 | bcopy(&DRIVE[index], data, sizeof(struct drive)); /* copy the config item out */ |
| 133 | return 0; |
| 134 | |
| 135 | case VINUM_SDCONFIG: |
| 136 | index = *(int *) data; /* get the index */ |
| 137 | if (index >= (unsigned) vinum_conf.subdisks_allocated) /* can't do it */ |
| 138 | return ENXIO; /* bang */ |
| 139 | bcopy(&SD[index], data, sizeof(struct sd)); /* copy the config item out */ |
| 140 | return 0; |
| 141 | |
| 142 | case VINUM_PLEXCONFIG: |
| 143 | index = *(int *) data; /* get the index */ |
| 144 | if (index >= (unsigned) vinum_conf.plexes_allocated) /* can't do it */ |
| 145 | return ENXIO; /* bang */ |
| 146 | bcopy(&PLEX[index], data, sizeof(struct plex)); /* copy the config item out */ |
| 147 | return 0; |
| 148 | |
| 149 | case VINUM_VOLCONFIG: |
| 150 | index = *(int *) data; /* get the index */ |
| 151 | if (index >= (unsigned) vinum_conf.volumes_allocated) /* can't do it */ |
| 152 | return ENXIO; /* bang */ |
| 153 | bcopy(&VOL[index], data, sizeof(struct volume)); /* copy the config item out */ |
| 154 | return 0; |
| 155 | |
| 156 | case VINUM_PLEXSDCONFIG: |
| 157 | index = *(int *) data; /* get the plex index */ |
| 158 | sdno = ((int *) data)[1]; /* and the sd index */ |
| 159 | if ((index >= (unsigned) vinum_conf.plexes_allocated) /* plex doesn't exist */ |
| 160 | ||(sdno >= PLEX[index].subdisks)) /* or it doesn't have this many subdisks */ |
| 161 | return ENXIO; /* bang */ |
| 162 | bcopy(&SD[PLEX[index].sdnos[sdno]], /* copy the config item out */ |
| 163 | data, |
| 164 | sizeof(struct sd)); |
| 165 | return 0; |
| 166 | |
| 167 | /* |
| 168 | * We get called in two places: one from the |
| 169 | * userland config routines, which call us |
| 170 | * to complete the config and save it. This |
| 171 | * call supplies the value 0 as a parameter. |
| 172 | * |
| 173 | * The other place is from the user "saveconfig" |
| 174 | * routine, which can only work if we're *not* |
| 175 | * configuring. In this case, supply parameter 1. |
| 176 | */ |
| 177 | case VINUM_SAVECONFIG: |
| 178 | if (VFLAGS & VF_CONFIGURING) { /* must be us, the others are asleep */ |
| 179 | if (*(int *) data == 0) /* finish config */ |
| 180 | finish_config(1); /* finish the configuration and update it */ |
| 181 | else |
| 182 | return EBUSY; /* can't do it now */ |
| 183 | } |
| 184 | save_config(); /* save configuration to disk */ |
| 185 | return 0; |
| 186 | |
| 187 | case VINUM_RELEASECONFIG: /* release the config */ |
| 188 | if (VFLAGS & VF_CONFIGURING) { /* must be us, the others are asleep */ |
| 189 | finish_config(0); /* finish the configuration, don't change it */ |
| 190 | save_config(); /* save configuration to disk */ |
| 191 | } else |
| 192 | error = EINVAL; /* release what config? */ |
| 193 | return error; |
| 194 | |
| 195 | case VINUM_INIT: |
| 196 | ioctl_reply = (struct _ioctl_reply *) data; /* reinstate the address to reply to */ |
| 197 | ioctl_reply->error = 0; |
| 198 | return 0; |
| 199 | |
| 200 | case VINUM_RESETCONFIG: |
| 201 | if (vinum_inactive(0)) { /* if the volumes are not active */ |
| 202 | /* |
| 203 | * Note the open count. We may be called from v, so we'll be open. |
| 204 | * Keep the count so we don't underflow |
| 205 | */ |
| 206 | free_vinum(1); /* clean up everything */ |
| 207 | log(LOG_NOTICE, "vinum: CONFIGURATION OBLITERATED\n"); |
| 208 | ioctl_reply = (struct _ioctl_reply *) data; /* reinstate the address to reply to */ |
| 209 | ioctl_reply->error = 0; |
| 210 | return 0; |
| 211 | } |
| 212 | return EBUSY; |
| 213 | |
| 214 | case VINUM_SETSTATE: |
| 215 | setstate((struct vinum_ioctl_msg *) data); /* set an object state */ |
| 216 | return 0; |
| 217 | |
| 218 | /* |
| 219 | * Set state by force, without changing |
| 220 | * anything else. |
| 221 | */ |
| 222 | case VINUM_SETSTATE_FORCE: |
| 223 | setstate_by_force((struct vinum_ioctl_msg *) data); /* set an object state */ |
| 224 | return 0; |
| 225 | |
| 226 | #ifdef VINUMDEBUG |
| 227 | case VINUM_MEMINFO: |
| 228 | vinum_meminfo(data); |
| 229 | return 0; |
| 230 | |
| 231 | case VINUM_MALLOCINFO: |
| 232 | return vinum_mallocinfo(data); |
| 233 | |
| 234 | case VINUM_RQINFO: |
| 235 | return vinum_rqinfo(data); |
| 236 | #endif |
| 237 | |
| 238 | case VINUM_LABEL: /* label a volume */ |
| 239 | ioctl_reply->error = write_volume_label(*(int *) data); /* index of the volume to label */ |
| 240 | ioctl_reply->msg[0] = '\0'; /* no message */ |
| 241 | return 0; |
| 242 | |
| 243 | case VINUM_REMOVE: |
| 244 | remove((struct vinum_ioctl_msg *) data); /* remove an object */ |
| 245 | return 0; |
| 246 | |
| 247 | case VINUM_GETFREELIST: /* get a drive free list element */ |
| 248 | index = *(int *) data; /* get the drive index */ |
| 249 | fe = ((int *) data)[1]; /* and the free list element */ |
| 250 | if ((index >= (unsigned) vinum_conf.drives_allocated) /* plex doesn't exist */ |
| 251 | ||(DRIVE[index].state == drive_unallocated)) |
| 252 | return ENODEV; |
| 253 | if (fe >= DRIVE[index].freelist_entries) /* no such entry */ |
| 254 | return ENOENT; |
| 255 | bcopy(&DRIVE[index].freelist[fe], |
| 256 | data, |
| 257 | sizeof(struct drive_freelist)); |
| 258 | return 0; |
| 259 | |
| 260 | case VINUM_RESETSTATS: |
| 261 | resetstats((struct vinum_ioctl_msg *) data); /* reset object stats */ |
| 262 | return 0; |
| 263 | |
| 264 | /* attach an object to a superordinate object */ |
| 265 | case VINUM_ATTACH: |
| 266 | attachobject((struct vinum_ioctl_msg *) data); |
| 267 | return 0; |
| 268 | |
| 269 | /* detach an object from a superordinate object */ |
| 270 | case VINUM_DETACH: |
| 271 | detachobject((struct vinum_ioctl_msg *) data); |
| 272 | return 0; |
| 273 | |
| 274 | /* rename an object */ |
| 275 | case VINUM_RENAME: |
| 276 | renameobject((struct vinum_rename_msg *) data); |
| 277 | return 0; |
| 278 | |
| 279 | /* replace an object */ |
| 280 | case VINUM_REPLACE: |
| 281 | replaceobject((struct vinum_ioctl_msg *) data); |
| 282 | return 0; |
| 283 | |
| 284 | case VINUM_DAEMON: |
| 285 | vinum_daemon(); /* perform the daemon */ |
| 286 | return 0; |
| 287 | |
| 288 | case VINUM_FINDDAEMON: /* check for presence of daemon */ |
| 289 | return vinum_finddaemon(); |
| 290 | return 0; |
| 291 | |
| 292 | case VINUM_SETDAEMON: /* set daemon flags */ |
| 293 | return vinum_setdaemonopts(*(int *) data); |
| 294 | |
| 295 | case VINUM_GETDAEMON: /* get daemon flags */ |
| 296 | *(int *) data = daemon_options; |
| 297 | return 0; |
| 298 | |
| 299 | case VINUM_PARITYOP: /* check/rebuild RAID-4/5 parity */ |
| 300 | parityops((struct vinum_ioctl_msg *) data); |
| 301 | return 0; |
| 302 | |
| 303 | /* move an object */ |
| 304 | case VINUM_MOVE: |
| 305 | moveobject((struct vinum_ioctl_msg *) data); |
| 306 | return 0; |
| 307 | default: |
| 308 | /* FALLTHROUGH */ |
| 309 | break; |
| 310 | } |
| 311 | |
| 312 | case VINUM_DRIVE_TYPE: |
| 313 | default: |
| 314 | log(LOG_WARNING, |
| 315 | "vinumioctl: invalid ioctl from process %d (%s): %lx\n", |
| 316 | curproc->p_pid, |
| 317 | curproc->p_comm, |
| 318 | cmd); |
| 319 | return EINVAL; |
| 320 | |
| 321 | case VINUM_SD_TYPE: |
| 322 | case VINUM_RAWSD_TYPE: |
| 323 | objno = Sdno(dev); |
| 324 | |
| 325 | sd = &SD[objno]; |
| 326 | |
| 327 | switch (cmd) { |
| 328 | case DIOCGDINFO: /* get disk label */ |
| 329 | get_volume_label(sd->name, 1, sd->sectors, (struct disklabel *) data); |
| 330 | break; |
| 331 | |
| 332 | /* |
| 333 | * We don't have this stuff on hardware, |
| 334 | * so just pretend to do it so that |
| 335 | * utilities don't get upset. |
| 336 | */ |
| 337 | case DIOCWDINFO: /* write partition info */ |
| 338 | case DIOCSDINFO: /* set partition info */ |
| 339 | return 0; /* not a titty */ |
| 340 | |
| 341 | default: |
| 342 | return ENOTTY; /* not my kind of ioctl */ |
| 343 | } |
| 344 | |
| 345 | return 0; /* pretend we did it */ |
| 346 | |
| 347 | case VINUM_RAWPLEX_TYPE: |
| 348 | case VINUM_PLEX_TYPE: |
| 349 | objno = Plexno(dev); |
| 350 | |
| 351 | plex = &PLEX[objno]; |
| 352 | |
| 353 | switch (cmd) { |
| 354 | case DIOCGDINFO: /* get disk label */ |
| 355 | get_volume_label(plex->name, 1, plex->length, (struct disklabel *) data); |
| 356 | break; |
| 357 | |
| 358 | /* |
| 359 | * We don't have this stuff on hardware, |
| 360 | * so just pretend to do it so that |
| 361 | * utilities don't get upset. |
| 362 | */ |
| 363 | case DIOCWDINFO: /* write partition info */ |
| 364 | case DIOCSDINFO: /* set partition info */ |
| 365 | return 0; /* not a titty */ |
| 366 | |
| 367 | default: |
| 368 | return ENOTTY; /* not my kind of ioctl */ |
| 369 | } |
| 370 | |
| 371 | return 0; /* pretend we did it */ |
| 372 | |
| 373 | case VINUM_VOLUME_TYPE: |
| 374 | objno = Volno(dev); |
| 375 | |
| 376 | if ((unsigned) objno >= (unsigned) vinum_conf.volumes_allocated) /* not a valid volume */ |
| 377 | return ENXIO; |
| 378 | vol = &VOL[objno]; |
| 379 | if (vol->state != volume_up) /* not up, */ |
| 380 | return EIO; /* I/O error */ |
| 381 | |
| 382 | switch (cmd) { |
| 383 | case DIOCGDINFO: /* get disk label */ |
| 384 | get_volume_label(vol->name, vol->plexes, vol->size, (struct disklabel *) data); |
| 385 | break; |
| 386 | |
| 387 | /* |
| 388 | * Care! DIOCGPART returns *pointers* to |
| 389 | * the caller, so we need to store this crap |
| 390 | * as well. And yes, we need it. |
| 391 | */ |
| 392 | case DIOCGPART: /* get partition information */ |
| 393 | get_volume_label(vol->name, vol->plexes, vol->size, &vol->label); |
| 394 | ((struct partinfo *) data)->disklab = &vol->label; |
| 395 | ((struct partinfo *) data)->part = &vol->label.d_partitions[0]; |
| 396 | break; |
| 397 | |
| 398 | /* |
| 399 | * We don't have this stuff on hardware, |
| 400 | * so just pretend to do it so that |
| 401 | * utilities don't get upset. |
| 402 | */ |
| 403 | case DIOCWDINFO: /* write partition info */ |
| 404 | case DIOCSDINFO: /* set partition info */ |
| 405 | return 0; /* not a titty */ |
| 406 | |
| 407 | case DIOCWLABEL: /* set or reset label writeable */ |
| 408 | if ((flag & FWRITE) == 0) /* not writeable? */ |
| 409 | return EACCES; /* no, die */ |
| 410 | if (*(int *) data != 0) /* set it? */ |
| 411 | vol->flags |= VF_WLABEL; /* yes */ |
| 412 | else |
| 413 | vol->flags &= ~VF_WLABEL; /* no, reset */ |
| 414 | break; |
| 415 | |
| 416 | default: |
| 417 | return ENOTTY; /* not my kind of ioctl */ |
| 418 | } |
| 419 | break; |
| 420 | } |
| 421 | return 0; /* XXX */ |
| 422 | } |
| 423 | |
| 424 | /* |
| 425 | * The following four functions check the supplied |
| 426 | * object index and return a pointer to the object |
| 427 | * if it exists. Otherwise they longjump out via |
| 428 | * throw_rude_remark. |
| 429 | */ |
| 430 | struct drive * |
| 431 | validdrive(int driveno, struct _ioctl_reply *reply) |
| 432 | { |
| 433 | if ((driveno < vinum_conf.drives_allocated) |
| 434 | && (DRIVE[driveno].state > drive_referenced)) |
| 435 | return &DRIVE[driveno]; |
| 436 | strcpy(reply->msg, "No such drive"); |
| 437 | reply->error = ENOENT; |
| 438 | return NULL; |
| 439 | } |
| 440 | |
| 441 | struct sd * |
| 442 | validsd(int sdno, struct _ioctl_reply *reply) |
| 443 | { |
| 444 | if ((sdno < vinum_conf.subdisks_allocated) |
| 445 | && (SD[sdno].state > sd_referenced)) |
| 446 | return &SD[sdno]; |
| 447 | strcpy(reply->msg, "No such subdisk"); |
| 448 | reply->error = ENOENT; |
| 449 | return NULL; |
| 450 | } |
| 451 | |
| 452 | struct plex * |
| 453 | validplex(int plexno, struct _ioctl_reply *reply) |
| 454 | { |
| 455 | if ((plexno < vinum_conf.plexes_allocated) |
| 456 | && (PLEX[plexno].state > plex_referenced)) |
| 457 | return &PLEX[plexno]; |
| 458 | strcpy(reply->msg, "No such plex"); |
| 459 | reply->error = ENOENT; |
| 460 | return NULL; |
| 461 | } |
| 462 | |
| 463 | struct volume * |
| 464 | validvol(int volno, struct _ioctl_reply *reply) |
| 465 | { |
| 466 | if ((volno < vinum_conf.volumes_allocated) |
| 467 | && (VOL[volno].state > volume_uninit)) |
| 468 | return &VOL[volno]; |
| 469 | strcpy(reply->msg, "No such volume"); |
| 470 | reply->error = ENOENT; |
| 471 | return NULL; |
| 472 | } |
| 473 | |
| 474 | /* reset an object's stats */ |
| 475 | void |
| 476 | resetstats(struct vinum_ioctl_msg *msg) |
| 477 | { |
| 478 | struct _ioctl_reply *reply = (struct _ioctl_reply *) msg; |
| 479 | |
| 480 | switch (msg->type) { |
| 481 | case drive_object: |
| 482 | if (msg->index < vinum_conf.drives_allocated) { |
| 483 | struct drive *drive = &DRIVE[msg->index]; |
| 484 | if (drive->state > drive_referenced) { |
| 485 | drive->reads = 0; /* number of reads on this drive */ |
| 486 | drive->writes = 0; /* number of writes on this drive */ |
| 487 | drive->bytes_read = 0; /* number of bytes read */ |
| 488 | drive->bytes_written = 0; /* number of bytes written */ |
| 489 | reply->error = 0; |
| 490 | return; |
| 491 | } |
| 492 | reply->error = EINVAL; |
| 493 | return; |
| 494 | } |
| 495 | case sd_object: |
| 496 | if (msg->index < vinum_conf.subdisks_allocated) { |
| 497 | struct sd *sd = &SD[msg->index]; |
| 498 | if (sd->state > sd_referenced) { |
| 499 | sd->reads = 0; /* number of reads on this subdisk */ |
| 500 | sd->writes = 0; /* number of writes on this subdisk */ |
| 501 | sd->bytes_read = 0; /* number of bytes read */ |
| 502 | sd->bytes_written = 0; /* number of bytes written */ |
| 503 | reply->error = 0; |
| 504 | return; |
| 505 | } |
| 506 | reply->error = EINVAL; |
| 507 | return; |
| 508 | } |
| 509 | break; |
| 510 | |
| 511 | case plex_object: |
| 512 | if (msg->index < vinum_conf.plexes_allocated) { |
| 513 | struct plex *plex = &PLEX[msg->index]; |
| 514 | if (plex->state > plex_referenced) { |
| 515 | plex->reads = 0; |
| 516 | plex->writes = 0; /* number of writes on this plex */ |
| 517 | plex->bytes_read = 0; /* number of bytes read */ |
| 518 | plex->bytes_written = 0; /* number of bytes written */ |
| 519 | plex->recovered_reads = 0; /* number of recovered read operations */ |
| 520 | plex->degraded_writes = 0; /* number of degraded writes */ |
| 521 | plex->parityless_writes = 0; /* number of parityless writes */ |
| 522 | plex->multiblock = 0; /* requests that needed more than one block */ |
| 523 | plex->multistripe = 0; /* requests that needed more than one stripe */ |
| 524 | reply->error = 0; |
| 525 | return; |
| 526 | } |
| 527 | reply->error = EINVAL; |
| 528 | return; |
| 529 | } |
| 530 | break; |
| 531 | |
| 532 | case volume_object: |
| 533 | if (msg->index < vinum_conf.volumes_allocated) { |
| 534 | struct volume *vol = &VOL[msg->index]; |
| 535 | if (vol->state > volume_uninit) { |
| 536 | vol->bytes_read = 0; /* number of bytes read */ |
| 537 | vol->bytes_written = 0; /* number of bytes written */ |
| 538 | vol->reads = 0; /* number of reads on this volume */ |
| 539 | vol->writes = 0; /* number of writes on this volume */ |
| 540 | vol->recovered_reads = 0; /* reads recovered from another plex */ |
| 541 | reply->error = 0; |
| 542 | return; |
| 543 | } |
| 544 | reply->error = EINVAL; |
| 545 | return; |
| 546 | } |
| 547 | case invalid_object: /* can't get this */ |
| 548 | reply->error = EINVAL; |
| 549 | return; |
| 550 | } |
| 551 | } |
| 552 | |
| 553 | /* attach an object to a superior object */ |
| 554 | void |
| 555 | attachobject(struct vinum_ioctl_msg *msg) |
| 556 | { |
| 557 | struct _ioctl_reply *reply = (struct _ioctl_reply *) msg; |
| 558 | int sdno; |
| 559 | struct sd *sd; |
| 560 | struct plex *plex; |
| 561 | struct volume *vol; |
| 562 | |
| 563 | switch (msg->type) { |
| 564 | case drive_object: /* you can't attach a drive to anything */ |
| 565 | case volume_object: /* nor a volume */ |
| 566 | case invalid_object: /* "this can't happen" */ |
| 567 | reply->error = EINVAL; |
| 568 | reply->msg[0] = '\0'; /* vinum(8) doesn't do this */ |
| 569 | return; |
| 570 | |
| 571 | case sd_object: |
| 572 | sd = validsd(msg->index, reply); |
| 573 | if (sd == NULL) /* not a valid subdisk */ |
| 574 | return; |
| 575 | plex = validplex(msg->otherobject, reply); |
| 576 | if (plex) { |
| 577 | /* |
| 578 | * We should be more intelligent about this. |
| 579 | * We should be able to reattach a dead |
| 580 | * subdisk, but if we want to increase the total |
| 581 | * number of subdisks, we have a lot of reshuffling |
| 582 | * to do. XXX |
| 583 | */ |
| 584 | if ((plex->organization != plex_concat) /* can't attach to striped and RAID-4/5 */ |
| 585 | &&(!msg->force)) { /* without using force */ |
| 586 | reply->error = EINVAL; /* no message, the user should check */ |
| 587 | strcpy(reply->msg, "Can't attach to this plex organization"); |
| 588 | return; |
| 589 | } |
| 590 | if (sd->plexno >= 0) { /* already belong to a plex */ |
| 591 | reply->error = EBUSY; /* no message, the user should check */ |
| 592 | reply->msg[0] = '\0'; |
| 593 | return; |
| 594 | } |
| 595 | sd->plexoffset = msg->offset; /* this is where we want it */ |
| 596 | set_sd_state(sd->sdno, sd_stale, setstate_force); /* make sure it's stale */ |
| 597 | give_sd_to_plex(plex->plexno, sd->sdno); /* and give it to the plex */ |
| 598 | update_sd_config(sd->sdno, 0); |
| 599 | save_config(); |
| 600 | } |
| 601 | if (sd->state == sd_reviving) |
| 602 | reply->error = EAGAIN; /* need to revive it */ |
| 603 | else |
| 604 | reply->error = 0; |
| 605 | break; |
| 606 | |
| 607 | case plex_object: |
| 608 | plex = validplex(msg->index, reply); /* get plex */ |
| 609 | if (plex == NULL) |
| 610 | return; |
| 611 | vol = validvol(msg->otherobject, reply); /* and volume information */ |
| 612 | if (vol) { |
| 613 | if ((vol->plexes == MAXPLEX) /* we have too many already */ |
| 614 | ||(plex->volno >= 0)) { /* or the plex has an owner */ |
| 615 | reply->error = EINVAL; /* no message, the user should check */ |
| 616 | reply->msg[0] = '\0'; |
| 617 | return; |
| 618 | } |
| 619 | for (sdno = 0; sdno < plex->subdisks; sdno++) { |
| 620 | sd = &SD[plex->sdnos[sdno]]; |
| 621 | |
| 622 | if (sd->state > sd_down) /* real subdisk, vaguely accessible */ |
| 623 | set_sd_state(plex->sdnos[sdno], sd_stale, setstate_force); /* make it stale */ |
| 624 | } |
| 625 | set_plex_state(plex->plexno, plex_up, setstate_none); /* update plex state */ |
| 626 | give_plex_to_volume(msg->otherobject, msg->index); /* and give it to the volume */ |
| 627 | update_plex_config(plex->plexno, 0); |
| 628 | save_config(); |
| 629 | } |
| 630 | } |
| 631 | } |
| 632 | |
| 633 | /* detach an object from a superior object */ |
| 634 | void |
| 635 | detachobject(struct vinum_ioctl_msg *msg) |
| 636 | { |
| 637 | struct _ioctl_reply *reply = (struct _ioctl_reply *) msg; |
| 638 | struct sd *sd; |
| 639 | struct plex *plex; |
| 640 | struct volume *vol; |
| 641 | int sdno; |
| 642 | int plexno; |
| 643 | |
| 644 | switch (msg->type) { |
| 645 | case drive_object: /* you can't detach a drive from anything */ |
| 646 | case volume_object: /* nor a volume */ |
| 647 | case invalid_object: /* "this can't happen" */ |
| 648 | reply->error = EINVAL; |
| 649 | reply->msg[0] = '\0'; /* vinum(8) doesn't do this */ |
| 650 | return; |
| 651 | |
| 652 | case sd_object: |
| 653 | sd = validsd(msg->index, reply); |
| 654 | if (sd == NULL) |
| 655 | return; |
| 656 | if (sd->plexno < 0) { /* doesn't belong to a plex */ |
| 657 | reply->error = ENOENT; |
| 658 | strcpy(reply->msg, "Subdisk is not attached"); |
| 659 | return; |
| 660 | } else { /* valid plex number */ |
| 661 | plex = &PLEX[sd->plexno]; |
| 662 | if ((!msg->force) /* don't force things */ |
| 663 | &&((plex->state == plex_up) /* and the plex is up */ |
| 664 | ||((plex->state == plex_flaky) && sd->state == sd_up))) { /* or flaky with this sd up */ |
| 665 | reply->error = EBUSY; /* we need this sd */ |
| 666 | reply->msg[0] = '\0'; |
| 667 | return; |
| 668 | } |
| 669 | sd->plexno = -1; /* anonymous sd */ |
| 670 | if (plex->subdisks == 1) { /* this was the only subdisk */ |
| 671 | Free(plex->sdnos); /* free the subdisk array */ |
| 672 | plex->sdnos = NULL; /* and note the fact */ |
| 673 | plex->subdisks_allocated = 0; /* no subdisk space */ |
| 674 | } else { |
| 675 | for (sdno = 0; sdno < plex->subdisks; sdno++) { |
| 676 | if (plex->sdnos[sdno] == msg->index) /* found our subdisk */ |
| 677 | break; |
| 678 | } |
| 679 | if (sdno < (plex->subdisks - 1)) /* not the last one, compact */ |
| 680 | bcopy(&plex->sdnos[sdno + 1], |
| 681 | &plex->sdnos[sdno], |
| 682 | (plex->subdisks - 1 - sdno) * sizeof(int)); |
| 683 | } |
| 684 | plex->subdisks--; |
| 685 | if (!bcmp(plex->name, sd->name, strlen(plex->name) + 1)) |
| 686 | /* this subdisk is named after the plex */ |
| 687 | { |
| 688 | bcopy(sd->name, |
| 689 | &sd->name[3], |
| 690 | min(strlen(sd->name) + 1, MAXSDNAME - 3)); |
| 691 | bcopy("ex-", sd->name, 3); |
| 692 | sd->name[MAXSDNAME - 1] = '\0'; |
| 693 | } |
| 694 | update_plex_config(plex->plexno, 0); |
| 695 | if (isstriped(plex)) /* we've just mutilated our plex, */ |
| 696 | set_plex_state(plex->plexno, |
| 697 | plex_down, |
| 698 | setstate_force | setstate_configuring); |
| 699 | save_config(); |
| 700 | reply->error = 0; |
| 701 | } |
| 702 | return; |
| 703 | |
| 704 | case plex_object: |
| 705 | plex = validplex(msg->index, reply); /* get plex */ |
| 706 | if (plex == NULL) |
| 707 | return; |
| 708 | if (plex->volno >= 0) { |
| 709 | int volno = plex->volno; |
| 710 | |
| 711 | vol = &VOL[volno]; |
| 712 | if ((!msg->force) /* don't force things */ |
| 713 | &&((vol->state == volume_up) /* and the volume is up */ |
| 714 | &&(vol->plexes == 1))) { /* and this is the last plex */ |
| 715 | /* |
| 716 | * XXX As elsewhere, check whether we will lose |
| 717 | * mapping by removing this plex |
| 718 | */ |
| 719 | reply->error = EBUSY; /* we need this plex */ |
| 720 | reply->msg[0] = '\0'; |
| 721 | return; |
| 722 | } |
| 723 | plex->volno = -1; /* anonymous plex */ |
| 724 | for (plexno = 0; plexno < vol->plexes; plexno++) { |
| 725 | if (vol->plex[plexno] == msg->index) /* found our plex */ |
| 726 | break; |
| 727 | } |
| 728 | if (plexno < (vol->plexes - 1)) /* not the last one, compact */ |
| 729 | bcopy(&vol->plex[plexno + 1], |
| 730 | &vol->plex[plexno], |
| 731 | (vol->plexes - 1 - plexno) * sizeof(int)); |
| 732 | vol->plexes--; |
| 733 | vol->last_plex_read = 0; /* don't go beyond the end */ |
| 734 | if (!bcmp(vol->name, plex->name, strlen(vol->name) + 1)) |
| 735 | /* this plex is named after the volume */ |
| 736 | { |
| 737 | /* First, check if the subdisks are the same */ |
| 738 | if (msg->recurse) { |
| 739 | int sdno; |
| 740 | |
| 741 | for (sdno = 0; sdno < plex->subdisks; sdno++) { |
| 742 | struct sd *sd = &SD[plex->sdnos[sdno]]; |
| 743 | |
| 744 | if (!bcmp(plex->name, sd->name, strlen(plex->name) + 1)) |
| 745 | /* subdisk is named after the plex */ |
| 746 | { |
| 747 | bcopy(sd->name, |
| 748 | &sd->name[3], |
| 749 | min(strlen(sd->name) + 1, MAXSDNAME - 3)); |
| 750 | bcopy("ex-", sd->name, 3); |
| 751 | sd->name[MAXSDNAME - 1] = '\0'; |
| 752 | } |
| 753 | } |
| 754 | } |
| 755 | bcopy(plex->name, |
| 756 | &plex->name[3], |
| 757 | min(strlen(plex->name) + 1, MAXPLEXNAME - 3)); |
| 758 | bcopy("ex-", plex->name, 3); |
| 759 | plex->name[MAXPLEXNAME - 1] = '\0'; |
| 760 | } |
| 761 | update_volume_config(volno, 0); |
| 762 | save_config(); |
| 763 | reply->error = 0; |
| 764 | } else { |
| 765 | reply->error = ENOENT; |
| 766 | strcpy(reply->msg, "Plex is not attached"); |
| 767 | } |
| 768 | } |
| 769 | } |
| 770 | |
| 771 | void |
| 772 | renameobject(struct vinum_rename_msg *msg) |
| 773 | { |
| 774 | struct _ioctl_reply *reply = (struct _ioctl_reply *) msg; |
| 775 | struct drive *drive; |
| 776 | struct sd *sd; |
| 777 | struct plex *plex; |
| 778 | struct volume *vol; |
| 779 | |
| 780 | switch (msg->type) { |
| 781 | case drive_object: /* you can't attach a drive to anything */ |
| 782 | if (find_drive(msg->newname, 0) >= 0) { /* we have that name already, */ |
| 783 | reply->error = EEXIST; |
| 784 | reply->msg[0] = '\0'; |
| 785 | return; |
| 786 | } |
| 787 | drive = validdrive(msg->index, reply); |
| 788 | if (drive) { |
| 789 | bcopy(msg->newname, drive->label.name, MAXDRIVENAME); |
| 790 | save_config(); |
| 791 | reply->error = 0; |
| 792 | } |
| 793 | return; |
| 794 | |
| 795 | case sd_object: /* you can't attach a subdisk to anything */ |
| 796 | if (find_subdisk(msg->newname, 0) >= 0) { /* we have that name already, */ |
| 797 | reply->error = EEXIST; |
| 798 | reply->msg[0] = '\0'; |
| 799 | return; |
| 800 | } |
| 801 | sd = validsd(msg->index, reply); |
| 802 | if (sd) { |
| 803 | bcopy(msg->newname, sd->name, MAXSDNAME); |
| 804 | update_sd_config(sd->sdno, 0); |
| 805 | save_config(); |
| 806 | reply->error = 0; |
| 807 | } |
| 808 | return; |
| 809 | |
| 810 | case plex_object: /* you can't attach a plex to anything */ |
| 811 | if (find_plex(msg->newname, 0) >= 0) { /* we have that name already, */ |
| 812 | reply->error = EEXIST; |
| 813 | reply->msg[0] = '\0'; |
| 814 | return; |
| 815 | } |
| 816 | plex = validplex(msg->index, reply); |
| 817 | if (plex) { |
| 818 | bcopy(msg->newname, plex->name, MAXPLEXNAME); |
| 819 | update_plex_config(plex->plexno, 0); |
| 820 | save_config(); |
| 821 | reply->error = 0; |
| 822 | } |
| 823 | return; |
| 824 | |
| 825 | case volume_object: /* you can't attach a volume to anything */ |
| 826 | if (find_volume(msg->newname, 0) >= 0) { /* we have that name already, */ |
| 827 | reply->error = EEXIST; |
| 828 | reply->msg[0] = '\0'; |
| 829 | return; |
| 830 | } |
| 831 | vol = validvol(msg->index, reply); |
| 832 | if (vol) { |
| 833 | bcopy(msg->newname, vol->name, MAXVOLNAME); |
| 834 | update_volume_config(msg->index, 0); |
| 835 | save_config(); |
| 836 | reply->error = 0; |
| 837 | } |
| 838 | return; |
| 839 | |
| 840 | case invalid_object: |
| 841 | reply->error = EINVAL; |
| 842 | reply->msg[0] = '\0'; |
| 843 | } |
| 844 | } |
| 845 | |
| 846 | /* |
| 847 | * Replace one object with another. |
| 848 | * Currently only for drives. |
| 849 | * message->index is the drive number of the old drive |
| 850 | * message->otherobject is the drive number of the new drive |
| 851 | */ |
| 852 | void |
| 853 | replaceobject(struct vinum_ioctl_msg *msg) |
| 854 | { |
| 855 | struct _ioctl_reply *reply = (struct _ioctl_reply *) msg; |
| 856 | |
| 857 | reply->error = ENODEV; /* until I know how to do this */ |
| 858 | strcpy(reply->msg, "replace not implemented yet"); |
| 859 | /* save_config (); */ |
| 860 | } |
| 861 | |
| 862 | void |
| 863 | moveobject(struct vinum_ioctl_msg *msg) |
| 864 | { |
| 865 | struct _ioctl_reply *reply = (struct _ioctl_reply *) msg; |
| 866 | struct drive *drive; |
| 867 | struct sd *sd; |
| 868 | |
| 869 | /* Check that our objects are valid (i.e. they exist) */ |
| 870 | drive = validdrive(msg->index, (struct _ioctl_reply *) msg); |
| 871 | if (drive == NULL) |
| 872 | return; |
| 873 | sd = validsd(msg->otherobject, (struct _ioctl_reply *) msg); |
| 874 | if (sd == NULL) |
| 875 | return; |
| 876 | if (sd->driveno == msg->index) /* sd already belongs to drive */ |
| 877 | return; |
| 878 | |
| 879 | if (sd->state > sd_stale) |
| 880 | set_sd_state(sd->sdno, sd_stale, setstate_force); /* make the subdisk stale */ |
| 881 | else |
| 882 | sd->state = sd_empty; |
| 883 | if (sd->plexno >= 0) /* part of a plex, */ |
| 884 | update_plex_state(sd->plexno); /* update its state */ |
| 885 | |
| 886 | /* Return the space on the old drive */ |
| 887 | if ((sd->driveno >= 0) /* we have a drive, */ |
| 888 | &&(sd->sectors > 0)) /* and some space on it */ |
| 889 | return_drive_space(sd->driveno, /* return the space */ |
| 890 | sd->driveoffset, |
| 891 | sd->sectors); |
| 892 | |
| 893 | /* Reassign the old subdisk */ |
| 894 | sd->driveno = msg->index; |
| 895 | sd->driveoffset = -1; /* let the drive decide where to put us */ |
| 896 | give_sd_to_drive(sd->sdno); |
| 897 | reply->error = 0; |
| 898 | } |
| 899 | |
| 900 | /* Local Variables: */ |
| 901 | /* fill-column: 50 */ |
| 902 | /* End: */ |