geom_disk.c revision 248694
192108Sphk/*- 292108Sphk * Copyright (c) 2002 Poul-Henning Kamp 392108Sphk * Copyright (c) 2002 Networks Associates Technology, Inc. 492108Sphk * All rights reserved. 592108Sphk * 692108Sphk * This software was developed for the FreeBSD Project by Poul-Henning Kamp 792108Sphk * and NAI Labs, the Security Research Division of Network Associates, Inc. 892108Sphk * under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the 992108Sphk * DARPA CHATS research program. 1092108Sphk * 1192108Sphk * Redistribution and use in source and binary forms, with or without 1292108Sphk * modification, are permitted provided that the following conditions 1392108Sphk * are met: 1492108Sphk * 1. Redistributions of source code must retain the above copyright 1592108Sphk * notice, this list of conditions and the following disclaimer. 1692108Sphk * 2. Redistributions in binary form must reproduce the above copyright 1792108Sphk * notice, this list of conditions and the following disclaimer in the 1892108Sphk * documentation and/or other materials provided with the distribution. 1992108Sphk * 3. The names of the authors may not be used to endorse or promote 2092108Sphk * products derived from this software without specific prior written 2192108Sphk * permission. 2292108Sphk * 2392108Sphk * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 2492108Sphk * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2592108Sphk * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2692108Sphk * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 2792108Sphk * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2892108Sphk * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2992108Sphk * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 3092108Sphk * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 3192108Sphk * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3292108Sphk * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3392108Sphk * SUCH DAMAGE. 3492108Sphk */ 3592108Sphk 36116196Sobrien#include <sys/cdefs.h> 37116196Sobrien__FBSDID("$FreeBSD: head/sys/geom/geom_disk.c 248694 2013-03-25 05:45:24Z mav $"); 38116196Sobrien 39104519Sphk#include "opt_geom.h" 40104519Sphk 4192108Sphk#include <sys/param.h> 4292108Sphk#include <sys/systm.h> 4392108Sphk#include <sys/kernel.h> 4492108Sphk#include <sys/sysctl.h> 4592108Sphk#include <sys/bio.h> 46196823Spjd#include <sys/ctype.h> 47110119Sphk#include <sys/fcntl.h> 4892108Sphk#include <sys/malloc.h> 49223921Sae#include <sys/sbuf.h> 5092108Sphk#include <sys/sysctl.h> 51111979Sphk#include <sys/devicestat.h> 5292108Sphk#include <machine/md_var.h> 5392108Sphk 5492108Sphk#include <sys/lock.h> 5592108Sphk#include <sys/mutex.h> 5692108Sphk#include <geom/geom.h> 57112952Sphk#include <geom/geom_disk.h> 58112476Sphk#include <geom/geom_int.h> 5992108Sphk 60219970Smav#include <dev/led/led.h> 61219970Smav 62219970Smavstruct g_disk_softc { 63248694Smav struct mtx done_mtx; 64219970Smav struct disk *dp; 65219970Smav struct sysctl_ctx_list sysctl_ctx; 66219970Smav struct sysctl_oid *sysctl_tree; 67219970Smav char led[64]; 68219970Smav uint32_t state; 69219970Smav}; 70219970Smav 7192108Sphkstatic g_access_t g_disk_access; 72133314Sphkstatic g_start_t g_disk_start; 73133314Sphkstatic g_ioctl_t g_disk_ioctl; 74133314Sphkstatic g_dumpconf_t g_disk_dumpconf; 75237518Skenstatic g_provgone_t g_disk_providergone; 7692108Sphk 77141624Sphkstatic struct g_class g_disk_class = { 78112552Sphk .name = "DISK", 79133318Sphk .version = G_VERSION, 80133314Sphk .start = g_disk_start, 81133314Sphk .access = g_disk_access, 82133314Sphk .ioctl = g_disk_ioctl, 83237518Sken .providergone = g_disk_providergone, 84133314Sphk .dumpconf = g_disk_dumpconf, 8592108Sphk}; 8692108Sphk 87219970SmavSYSCTL_DECL(_kern_geom); 88227309Sedstatic SYSCTL_NODE(_kern_geom, OID_AUTO, disk, CTLFLAG_RW, 0, 89227309Sed "GEOM_DISK stuff"); 90219970Smav 91115473SphkDECLARE_GEOM_CLASS(g_disk_class, g_disk); 92115473Sphk 93110052Sphkstatic void __inline 94110052Sphkg_disk_lock_giant(struct disk *dp) 95110052Sphk{ 96226736Spjd 97125975Sphk if (dp->d_flags & DISKFLAG_NEEDSGIANT) 98125975Sphk mtx_lock(&Giant); 99110052Sphk} 100110052Sphk 101110052Sphkstatic void __inline 102110052Sphkg_disk_unlock_giant(struct disk *dp) 103110052Sphk{ 104226736Spjd 105125975Sphk if (dp->d_flags & DISKFLAG_NEEDSGIANT) 106125975Sphk mtx_unlock(&Giant); 107110052Sphk} 108110052Sphk 10992108Sphkstatic int 11092108Sphkg_disk_access(struct g_provider *pp, int r, int w, int e) 11192108Sphk{ 11292108Sphk struct disk *dp; 113219970Smav struct g_disk_softc *sc; 11492108Sphk int error; 11592108Sphk 11692108Sphk g_trace(G_T_ACCESS, "g_disk_access(%s, %d, %d, %d)", 11792108Sphk pp->name, r, w, e); 11892108Sphk g_topology_assert(); 119248694Smav sc = pp->private; 120219970Smav if (sc == NULL || (dp = sc->dp) == NULL || dp->d_destroyed) { 121125539Spjd /* 122125539Spjd * Allow decreasing access count even if disk is not 123125539Spjd * avaliable anymore. 124125539Spjd */ 125125539Spjd if (r <= 0 && w <= 0 && e <= 0) 126125539Spjd return (0); 127125975Sphk return (ENXIO); 128125539Spjd } 12992108Sphk r += pp->acr; 13092108Sphk w += pp->acw; 13192108Sphk e += pp->ace; 132110119Sphk error = 0; 13392108Sphk if ((pp->acr + pp->acw + pp->ace) == 0 && (r + w + e) > 0) { 134111668Sphk if (dp->d_open != NULL) { 135110119Sphk g_disk_lock_giant(dp); 136111668Sphk error = dp->d_open(dp); 137166861Sn_hibma if (bootverbose && error != 0) 138110119Sphk printf("Opened disk %s -> %d\n", 139110119Sphk pp->name, error); 140110119Sphk g_disk_unlock_giant(dp); 141110119Sphk } 142105551Sphk pp->mediasize = dp->d_mediasize; 143105551Sphk pp->sectorsize = dp->d_sectorsize; 144222652Smav pp->stripeoffset = dp->d_stripeoffset; 145222652Smav pp->stripesize = dp->d_stripesize; 146110119Sphk dp->d_flags |= DISKFLAG_OPEN; 147110727Sphk if (dp->d_maxsize == 0) { 148110727Sphk printf("WARNING: Disk drive %s%d has no d_maxsize\n", 149110727Sphk dp->d_name, dp->d_unit); 150110727Sphk dp->d_maxsize = DFLTPHYS; 151110727Sphk } 15292108Sphk } else if ((pp->acr + pp->acw + pp->ace) > 0 && (r + w + e) == 0) { 153111668Sphk if (dp->d_close != NULL) { 154110119Sphk g_disk_lock_giant(dp); 155111668Sphk error = dp->d_close(dp); 156110119Sphk if (error != 0) 157110119Sphk printf("Closed disk %s -> %d\n", 158110119Sphk pp->name, error); 159110119Sphk g_disk_unlock_giant(dp); 160110119Sphk } 161219970Smav sc->state = G_STATE_ACTIVE; 162219970Smav if (sc->led[0] != 0) 163219970Smav led_set(sc->led, "0"); 164110119Sphk dp->d_flags &= ~DISKFLAG_OPEN; 16592108Sphk } 16692108Sphk return (error); 16792108Sphk} 16892108Sphk 16992108Sphkstatic void 17095038Sphkg_disk_kerneldump(struct bio *bp, struct disk *dp) 171219950Smav{ 17295038Sphk struct g_kerneldump *gkd; 173104450Sphk struct g_geom *gp; 17495038Sphk 17595038Sphk gkd = (struct g_kerneldump*)bp->bio_data; 176104450Sphk gp = bp->bio_to->geom; 177104450Sphk g_trace(G_T_TOPOLOGY, "g_disk_kernedump(%s, %jd, %jd)", 178104450Sphk gp->name, (intmax_t)gkd->offset, (intmax_t)gkd->length); 179120572Sphk if (dp->d_dump == NULL) { 180120572Sphk g_io_deliver(bp, ENODEV); 181120572Sphk return; 182120572Sphk } 183219950Smav gkd->di.dumper = dp->d_dump; 184219950Smav gkd->di.priv = dp; 185219950Smav gkd->di.blocksize = dp->d_sectorsize; 186219950Smav gkd->di.maxiosize = dp->d_maxsize; 187219950Smav gkd->di.mediaoffset = gkd->offset; 188140968Sphk if ((gkd->offset + gkd->length) > dp->d_mediasize) 189140968Sphk gkd->length = dp->d_mediasize - gkd->offset; 190219950Smav gkd->di.mediasize = gkd->length; 191219950Smav g_io_deliver(bp, 0); 19295038Sphk} 19395038Sphk 19495038Sphkstatic void 195219970Smavg_disk_setstate(struct bio *bp, struct g_disk_softc *sc) 196219970Smav{ 197219970Smav const char *cmd; 198219970Smav 199219970Smav memcpy(&sc->state, bp->bio_data, sizeof(sc->state)); 200219970Smav if (sc->led[0] != 0) { 201219970Smav switch (sc->state) { 202219970Smav case G_STATE_FAILED: 203219970Smav cmd = "1"; 204219970Smav break; 205219970Smav case G_STATE_REBUILD: 206219970Smav cmd = "f5"; 207219970Smav break; 208219970Smav case G_STATE_RESYNC: 209219970Smav cmd = "f1"; 210219970Smav break; 211219970Smav default: 212219970Smav cmd = "0"; 213219970Smav break; 214219970Smav } 215219970Smav led_set(sc->led, cmd); 216219970Smav } 217219970Smav g_io_deliver(bp, 0); 218219970Smav} 219219970Smav 220219970Smavstatic void 22192108Sphkg_disk_done(struct bio *bp) 22292108Sphk{ 223111979Sphk struct bio *bp2; 224219970Smav struct g_disk_softc *sc; 22592108Sphk 226110720Sphk /* See "notes" for why we need a mutex here */ 227110720Sphk /* XXX: will witness accept a mix of Giant/unGiant drivers here ? */ 228248694Smav bp2 = bp->bio_parent; 229248694Smav sc = bp2->bio_to->private; 23092108Sphk bp->bio_completed = bp->bio_length - bp->bio_resid; 231248694Smav mtx_lock(&sc->done_mtx); 232111979Sphk if (bp2->bio_error == 0) 233111979Sphk bp2->bio_error = bp->bio_error; 234111979Sphk bp2->bio_completed += bp->bio_completed; 235248694Smav if ((bp->bio_cmd & (BIO_READ|BIO_WRITE|BIO_DELETE)) != 0) 236248694Smav devstat_end_transaction_bio(sc->dp->d_devstat, bp); 237111979Sphk g_destroy_bio(bp); 238111979Sphk bp2->bio_inbed++; 239111979Sphk if (bp2->bio_children == bp2->bio_inbed) { 240112259Sphk bp2->bio_resid = bp2->bio_bcount - bp2->bio_completed; 241111979Sphk g_io_deliver(bp2, bp2->bio_error); 242111979Sphk } 243248694Smav mtx_unlock(&sc->done_mtx); 24492108Sphk} 24592108Sphk 246119660Sphkstatic int 247138732Sphkg_disk_ioctl(struct g_provider *pp, u_long cmd, void * data, int fflag, struct thread *td) 248119660Sphk{ 249119660Sphk struct disk *dp; 250219970Smav struct g_disk_softc *sc; 251119660Sphk int error; 252119660Sphk 253248694Smav sc = pp->private; 254219970Smav dp = sc->dp; 255119660Sphk 256119660Sphk if (dp->d_ioctl == NULL) 257119660Sphk return (ENOIOCTL); 258119660Sphk g_disk_lock_giant(dp); 259138732Sphk error = dp->d_ioctl(dp, cmd, data, fflag, td); 260119660Sphk g_disk_unlock_giant(dp); 261226736Spjd return (error); 262119660Sphk} 263119660Sphk 26492108Sphkstatic void 26592108Sphkg_disk_start(struct bio *bp) 26692108Sphk{ 267110720Sphk struct bio *bp2, *bp3; 26892108Sphk struct disk *dp; 269219970Smav struct g_disk_softc *sc; 27092403Sphk int error; 271110720Sphk off_t off; 27292108Sphk 273248694Smav sc = bp->bio_to->private; 274219970Smav if (sc == NULL || (dp = sc->dp) == NULL || dp->d_destroyed) { 275115214Sphk g_io_deliver(bp, ENXIO); 276143791Sphk return; 277143791Sphk } 278104609Sphk error = EJUSTRETURN; 27992108Sphk switch(bp->bio_cmd) { 280104609Sphk case BIO_DELETE: 281110119Sphk if (!(dp->d_flags & DISKFLAG_CANDELETE)) { 282226737Spjd error = EOPNOTSUPP; 283104609Sphk break; 284104609Sphk } 285104609Sphk /* fall-through */ 28692108Sphk case BIO_READ: 28792108Sphk case BIO_WRITE: 288110720Sphk off = 0; 289110720Sphk bp3 = NULL; 29092108Sphk bp2 = g_clone_bio(bp); 291110477Sphk if (bp2 == NULL) { 292110477Sphk error = ENOMEM; 293110477Sphk break; 294110477Sphk } 295110720Sphk do { 296110720Sphk bp2->bio_offset += off; 297110720Sphk bp2->bio_length -= off; 298248516Skib if ((bp->bio_flags & BIO_UNMAPPED) == 0) { 299248516Skib bp2->bio_data += off; 300248516Skib } else { 301248516Skib KASSERT((dp->d_flags & DISKFLAG_UNMAPPED_BIO) 302248516Skib != 0, 303248516Skib ("unmapped bio not supported by disk %s", 304248516Skib dp->d_name)); 305248516Skib bp2->bio_ma += off / PAGE_SIZE; 306248516Skib bp2->bio_ma_offset += off; 307248516Skib bp2->bio_ma_offset %= PAGE_SIZE; 308248516Skib bp2->bio_ma_n -= off / PAGE_SIZE; 309248516Skib } 310110720Sphk if (bp2->bio_length > dp->d_maxsize) { 311110720Sphk /* 312110720Sphk * XXX: If we have a stripesize we should really 313110720Sphk * use it here. 314110720Sphk */ 315110720Sphk bp2->bio_length = dp->d_maxsize; 316248516Skib if ((bp->bio_flags & BIO_UNMAPPED) != 0) { 317248516Skib bp2->bio_ma_n = howmany( 318248516Skib bp2->bio_ma_offset + 319248516Skib bp2->bio_length, PAGE_SIZE); 320248516Skib } 321110720Sphk off += dp->d_maxsize; 322110720Sphk /* 323110720Sphk * To avoid a race, we need to grab the next bio 324110720Sphk * before we schedule this one. See "notes". 325110720Sphk */ 326110720Sphk bp3 = g_clone_bio(bp); 327110720Sphk if (bp3 == NULL) 328110720Sphk bp->bio_error = ENOMEM; 329110720Sphk } 330110720Sphk bp2->bio_done = g_disk_done; 331110720Sphk bp2->bio_pblkno = bp2->bio_offset / dp->d_sectorsize; 332110720Sphk bp2->bio_bcount = bp2->bio_length; 333110720Sphk bp2->bio_disk = dp; 334150759Stegge devstat_start_transaction_bio(dp->d_devstat, bp2); 335110720Sphk g_disk_lock_giant(dp); 336110720Sphk dp->d_strategy(bp2); 337110720Sphk g_disk_unlock_giant(dp); 338110720Sphk bp2 = bp3; 339110720Sphk bp3 = NULL; 340110720Sphk } while (bp2 != NULL); 34192108Sphk break; 34292108Sphk case BIO_GETATTR: 343223089Sgibbs /* Give the driver a chance to override */ 344223089Sgibbs if (dp->d_getattr != NULL) { 345223089Sgibbs if (bp->bio_disk == NULL) 346223089Sgibbs bp->bio_disk = dp; 347223089Sgibbs error = dp->d_getattr(bp); 348223089Sgibbs if (error != -1) 349223089Sgibbs break; 350223089Sgibbs error = EJUSTRETURN; 351223089Sgibbs } 352216794Skib if (g_handleattr_int(bp, "GEOM::candelete", 353216794Skib (dp->d_flags & DISKFLAG_CANDELETE) != 0)) 35492403Sphk break; 355216794Skib else if (g_handleattr_int(bp, "GEOM::fwsectors", 356216794Skib dp->d_fwsectors)) 357216794Skib break; 358103714Sphk else if (g_handleattr_int(bp, "GEOM::fwheads", dp->d_fwheads)) 35992403Sphk break; 36098066Sphk else if (g_handleattr_off_t(bp, "GEOM::frontstuff", 0)) 36194287Sphk break; 362169285Spjd else if (g_handleattr_str(bp, "GEOM::ident", dp->d_ident)) 363169285Spjd break; 364210471Smav else if (g_handleattr(bp, "GEOM::hba_vendor", 365210471Smav &dp->d_hba_vendor, 2)) 366210471Smav break; 367210471Smav else if (g_handleattr(bp, "GEOM::hba_device", 368210471Smav &dp->d_hba_device, 2)) 369210471Smav break; 370210471Smav else if (g_handleattr(bp, "GEOM::hba_subvendor", 371210471Smav &dp->d_hba_subvendor, 2)) 372210471Smav break; 373210471Smav else if (g_handleattr(bp, "GEOM::hba_subdevice", 374210471Smav &dp->d_hba_subdevice, 2)) 375210471Smav break; 37695038Sphk else if (!strcmp(bp->bio_attribute, "GEOM::kerneldump")) 37795038Sphk g_disk_kerneldump(bp, dp); 378219970Smav else if (!strcmp(bp->bio_attribute, "GEOM::setstate")) 379219970Smav g_disk_setstate(bp, sc); 380119660Sphk else 38192403Sphk error = ENOIOCTL; 38292403Sphk break; 383163833Spjd case BIO_FLUSH: 384240629Savg g_trace(G_T_BIO, "g_disk_flushcache(%s)", 385163833Spjd bp->bio_to->name); 386163833Spjd if (!(dp->d_flags & DISKFLAG_CANFLUSHCACHE)) { 387226737Spjd error = EOPNOTSUPP; 388226737Spjd break; 389163833Spjd } 390163833Spjd bp2 = g_clone_bio(bp); 391163833Spjd if (bp2 == NULL) { 392163833Spjd g_io_deliver(bp, ENOMEM); 393163833Spjd return; 394163833Spjd } 395163833Spjd bp2->bio_done = g_disk_done; 396163833Spjd bp2->bio_disk = dp; 397163833Spjd g_disk_lock_giant(dp); 398163833Spjd dp->d_strategy(bp2); 399163833Spjd g_disk_unlock_giant(dp); 400163833Spjd break; 40192108Sphk default: 40292403Sphk error = EOPNOTSUPP; 40392403Sphk break; 40492403Sphk } 405104609Sphk if (error != EJUSTRETURN) 406104195Sphk g_io_deliver(bp, error); 40792403Sphk return; 40892108Sphk} 40992108Sphk 410104936Sphkstatic void 411107953Sphkg_disk_dumpconf(struct sbuf *sb, const char *indent, struct g_geom *gp, struct g_consumer *cp, struct g_provider *pp) 412105537Sphk{ 413105537Sphk struct disk *dp; 414219970Smav struct g_disk_softc *sc; 415105537Sphk 416219970Smav sc = gp->softc; 417219970Smav if (sc == NULL || (dp = sc->dp) == NULL) 418120374Sphk return; 419106101Sphk if (indent == NULL) { 420106101Sphk sbuf_printf(sb, " hd %u", dp->d_fwheads); 421106101Sphk sbuf_printf(sb, " sc %u", dp->d_fwsectors); 422106101Sphk return; 423106101Sphk } 424105539Sphk if (pp != NULL) { 425105537Sphk sbuf_printf(sb, "%s<fwheads>%u</fwheads>\n", 426105537Sphk indent, dp->d_fwheads); 427105537Sphk sbuf_printf(sb, "%s<fwsectors>%u</fwsectors>\n", 428105537Sphk indent, dp->d_fwsectors); 429219056Snwhitehorn sbuf_printf(sb, "%s<ident>%s</ident>\n", indent, dp->d_ident); 430219056Snwhitehorn sbuf_printf(sb, "%s<descr>%s</descr>\n", indent, dp->d_descr); 431105537Sphk } 432105537Sphk} 433105537Sphk 434105537Sphkstatic void 435242322Straszg_disk_resize(void *ptr, int flag) 436238216Strasz{ 437242322Strasz struct disk *dp; 438238216Strasz struct g_geom *gp; 439238216Strasz struct g_provider *pp; 440238216Strasz 441242322Strasz if (flag == EV_CANCEL) 442242322Strasz return; 443242322Strasz g_topology_assert(); 444242322Strasz 445242322Strasz dp = ptr; 446238216Strasz gp = dp->d_geom; 447238216Strasz 448242322Strasz if (dp->d_destroyed || gp == NULL) 449242322Strasz return; 450242322Strasz 451238216Strasz LIST_FOREACH(pp, &gp->provider, provider) { 452238216Strasz if (pp->sectorsize != 0 && 453238216Strasz pp->sectorsize != dp->d_sectorsize) 454238216Strasz g_wither_provider(pp, ENXIO); 455238216Strasz else 456238216Strasz g_resize_provider(pp, dp->d_mediasize); 457238216Strasz } 458238216Strasz} 459238216Strasz 460238216Straszstatic void 461115309Sphkg_disk_create(void *arg, int flag) 46292108Sphk{ 46392108Sphk struct g_geom *gp; 46492108Sphk struct g_provider *pp; 465110708Sphk struct disk *dp; 466219970Smav struct g_disk_softc *sc; 467219970Smav char tmpstr[80]; 46892108Sphk 469115309Sphk if (flag == EV_CANCEL) 470115309Sphk return; 471104936Sphk g_topology_assert(); 472110708Sphk dp = arg; 473219970Smav sc = g_malloc(sizeof(*sc), M_WAITOK | M_ZERO); 474248694Smav mtx_init(&sc->done_mtx, "g_disk_done", NULL, MTX_DEF); 475219970Smav sc->dp = dp; 476110708Sphk gp = g_new_geomf(&g_disk_class, "%s%d", dp->d_name, dp->d_unit); 477219970Smav gp->softc = sc; 478104936Sphk pp = g_new_providerf(gp, "%s", gp->name); 479110708Sphk pp->mediasize = dp->d_mediasize; 480110708Sphk pp->sectorsize = dp->d_sectorsize; 481110710Sphk pp->stripeoffset = dp->d_stripeoffset; 482110710Sphk pp->stripesize = dp->d_stripesize; 483248516Skib if ((dp->d_flags & DISKFLAG_UNMAPPED_BIO) != 0) 484248516Skib pp->flags |= G_PF_ACCEPT_UNMAPPED; 485105957Sphk if (bootverbose) 486105957Sphk printf("GEOM: new disk %s\n", gp->name); 487219970Smav sysctl_ctx_init(&sc->sysctl_ctx); 488219970Smav snprintf(tmpstr, sizeof(tmpstr), "GEOM disk %s", gp->name); 489219970Smav sc->sysctl_tree = SYSCTL_ADD_NODE(&sc->sysctl_ctx, 490219970Smav SYSCTL_STATIC_CHILDREN(_kern_geom_disk), OID_AUTO, gp->name, 491219970Smav CTLFLAG_RD, 0, tmpstr); 492219970Smav if (sc->sysctl_tree != NULL) { 493219970Smav snprintf(tmpstr, sizeof(tmpstr), 494219970Smav "kern.geom.disk.%s.led", gp->name); 495219970Smav TUNABLE_STR_FETCH(tmpstr, sc->led, sizeof(sc->led)); 496219970Smav SYSCTL_ADD_STRING(&sc->sysctl_ctx, 497219970Smav SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, "led", 498219970Smav CTLFLAG_RW | CTLFLAG_TUN, sc->led, sizeof(sc->led), 499219970Smav "LED name"); 500219970Smav } 501219970Smav pp->private = sc; 502112989Sphk dp->d_geom = gp; 503112989Sphk g_error_provider(pp, 0); 504104936Sphk} 505104936Sphk 506237518Sken/* 507237518Sken * We get this callback after all of the consumers have gone away, and just 508237518Sken * before the provider is freed. If the disk driver provided a d_gone 509237518Sken * callback, let them know that it is okay to free resources -- they won't 510237518Sken * be getting any more accesses from GEOM. 511237518Sken */ 512119652Sphkstatic void 513237518Skeng_disk_providergone(struct g_provider *pp) 514237518Sken{ 515237518Sken struct disk *dp; 516237518Sken struct g_disk_softc *sc; 517237518Sken 518248694Smav sc = (struct g_disk_softc *)pp->private; 519237518Sken dp = sc->dp; 520248694Smav if (dp != NULL && dp->d_gone != NULL) 521237518Sken dp->d_gone(dp); 522248694Smav if (sc->sysctl_tree != NULL) { 523248694Smav sysctl_ctx_free(&sc->sysctl_ctx); 524248694Smav sc->sysctl_tree = NULL; 525248694Smav } 526248694Smav if (sc->led[0] != 0) { 527248694Smav led_set(sc->led, "0"); 528248694Smav sc->led[0] = 0; 529248694Smav } 530248694Smav pp->private = NULL; 531248694Smav pp->geom->softc = NULL; 532248694Smav mtx_destroy(&sc->done_mtx); 533248694Smav g_free(sc); 534237518Sken} 535237518Sken 536237518Skenstatic void 537119652Sphkg_disk_destroy(void *ptr, int flag) 538119652Sphk{ 539125975Sphk struct disk *dp; 540119652Sphk struct g_geom *gp; 541219970Smav struct g_disk_softc *sc; 542104936Sphk 543119652Sphk g_topology_assert(); 544125975Sphk dp = ptr; 545125975Sphk gp = dp->d_geom; 546140261Sphk if (gp != NULL) { 547219970Smav sc = gp->softc; 548248694Smav if (sc != NULL) 549248694Smav sc->dp = NULL; 550248694Smav dp->d_geom = NULL; 551140261Sphk g_wither_geom(gp, ENXIO); 552140261Sphk } 553125975Sphk g_free(dp); 554119652Sphk} 555104936Sphk 556169287Spjd/* 557196823Spjd * We only allow printable characters in disk ident, 558196823Spjd * the rest is converted to 'x<HH>'. 559169287Spjd */ 560169287Spjdstatic void 561169287Spjdg_disk_ident_adjust(char *ident, size_t size) 562169287Spjd{ 563196823Spjd char *p, tmp[4], newid[DISK_IDENT_SIZE]; 564169287Spjd 565196823Spjd newid[0] = '\0'; 566196823Spjd for (p = ident; *p != '\0'; p++) { 567196823Spjd if (isprint(*p)) { 568196823Spjd tmp[0] = *p; 569196823Spjd tmp[1] = '\0'; 570196823Spjd } else { 571196823Spjd snprintf(tmp, sizeof(tmp), "x%02hhx", 572196823Spjd *(unsigned char *)p); 573196823Spjd } 574196823Spjd if (strlcat(newid, tmp, sizeof(newid)) >= sizeof(newid)) 575169287Spjd break; 576169287Spjd } 577169287Spjd bzero(ident, size); 578169287Spjd strlcpy(ident, newid, size); 579169287Spjd} 580169287Spjd 581125975Sphkstruct disk * 582226735Spjddisk_alloc(void) 583125975Sphk{ 584125975Sphk 585226735Spjd return (g_malloc(sizeof(struct disk), M_WAITOK | M_ZERO)); 586125975Sphk} 587125975Sphk 588111668Sphkvoid 589125975Sphkdisk_create(struct disk *dp, int version) 590104936Sphk{ 591226736Spjd 592237518Sken if (version != DISK_VERSION_02) { 593125975Sphk printf("WARNING: Attempt to add disk %s%d %s", 594125975Sphk dp->d_name, dp->d_unit, 595125975Sphk " using incompatible ABI version of disk(9)\n"); 596125975Sphk printf("WARNING: Ignoring disk %s%d\n", 597125975Sphk dp->d_name, dp->d_unit); 598125975Sphk return; 599125975Sphk } 600110119Sphk KASSERT(dp->d_strategy != NULL, ("disk_create need d_strategy")); 601110119Sphk KASSERT(dp->d_name != NULL, ("disk_create need d_name")); 602110119Sphk KASSERT(*dp->d_name != 0, ("disk_create need d_name")); 603110317Sphk KASSERT(strlen(dp->d_name) < SPECNAMELEN - 4, ("disk name too long")); 604120374Sphk if (dp->d_devstat == NULL) 605120374Sphk dp->d_devstat = devstat_new_entry(dp->d_name, dp->d_unit, 606120374Sphk dp->d_sectorsize, DEVSTAT_ALL_SUPPORTED, 607120374Sphk DEVSTAT_TYPE_DIRECT, DEVSTAT_PRIORITY_MAX); 608112989Sphk dp->d_geom = NULL; 609169287Spjd g_disk_ident_adjust(dp->d_ident, sizeof(dp->d_ident)); 610113937Sphk g_post_event(g_disk_create, dp, M_WAITOK, dp, NULL); 61192108Sphk} 61292108Sphk 61392108Sphkvoid 614111216Sphkdisk_destroy(struct disk *dp) 61592108Sphk{ 61692108Sphk 617112989Sphk g_cancel_event(dp); 618125975Sphk dp->d_destroyed = 1; 619131207Sphk if (dp->d_devstat != NULL) 620131207Sphk devstat_remove_entry(dp->d_devstat); 621131267Sphk g_post_event(g_disk_destroy, dp, M_WAITOK, NULL); 62292108Sphk} 62392108Sphk 624152565Sjdpvoid 625152565Sjdpdisk_gone(struct disk *dp) 626152565Sjdp{ 627152565Sjdp struct g_geom *gp; 628152565Sjdp struct g_provider *pp; 629152565Sjdp 630152565Sjdp gp = dp->d_geom; 631240822Spjd if (gp != NULL) { 632241022Spjd pp = LIST_FIRST(&gp->provider); 633241022Spjd if (pp != NULL) { 634241022Spjd KASSERT(LIST_NEXT(pp, provider) == NULL, 635241022Spjd ("geom %p has more than one provider", gp)); 636157619Smarcel g_wither_provider(pp, ENXIO); 637241022Spjd } 638240822Spjd } 639152565Sjdp} 640152565Sjdp 641223089Sgibbsvoid 642223089Sgibbsdisk_attr_changed(struct disk *dp, const char *attr, int flag) 643223089Sgibbs{ 644223089Sgibbs struct g_geom *gp; 645223089Sgibbs struct g_provider *pp; 646223089Sgibbs 647223089Sgibbs gp = dp->d_geom; 648223089Sgibbs if (gp != NULL) 649223089Sgibbs LIST_FOREACH(pp, &gp->provider, provider) 650223089Sgibbs (void)g_attr_changed(pp, attr, flag); 651223089Sgibbs} 652223089Sgibbs 653238216Straszvoid 654238886Smavdisk_media_changed(struct disk *dp, int flag) 655238886Smav{ 656238886Smav struct g_geom *gp; 657238886Smav struct g_provider *pp; 658238886Smav 659238886Smav gp = dp->d_geom; 660238886Smav if (gp != NULL) { 661238886Smav LIST_FOREACH(pp, &gp->provider, provider) 662238886Smav g_media_changed(pp, flag); 663238886Smav } 664238886Smav} 665238886Smav 666238886Smavvoid 667238886Smavdisk_media_gone(struct disk *dp, int flag) 668238886Smav{ 669238886Smav struct g_geom *gp; 670238886Smav struct g_provider *pp; 671238886Smav 672238886Smav gp = dp->d_geom; 673238886Smav if (gp != NULL) { 674238886Smav LIST_FOREACH(pp, &gp->provider, provider) 675238886Smav g_media_gone(pp, flag); 676238886Smav } 677238886Smav} 678238886Smav 679242322Straszint 680242322Straszdisk_resize(struct disk *dp, int flag) 681238216Strasz{ 682238216Strasz 683242322Strasz if (dp->d_destroyed || dp->d_geom == NULL) 684242322Strasz return (0); 685238216Strasz 686242322Strasz return (g_post_event(g_disk_resize, dp, flag, NULL)); 687238216Strasz} 688238216Strasz 689104451Sphkstatic void 690112988Sphkg_kern_disks(void *p, int flag __unused) 691104451Sphk{ 692104451Sphk struct sbuf *sb; 693104451Sphk struct g_geom *gp; 694104451Sphk char *sp; 695104451Sphk 696104451Sphk sb = p; 697104451Sphk sp = ""; 698104451Sphk g_topology_assert(); 699104451Sphk LIST_FOREACH(gp, &g_disk_class.geom, geom) { 700104451Sphk sbuf_printf(sb, "%s%s", sp, gp->name); 701104451Sphk sp = " "; 702104451Sphk } 703104451Sphk sbuf_finish(sb); 704104451Sphk} 705104451Sphk 706104451Sphkstatic int 707104451Sphksysctl_disks(SYSCTL_HANDLER_ARGS) 708104451Sphk{ 709104451Sphk int error; 710104451Sphk struct sbuf *sb; 711104451Sphk 712181463Sdes sb = sbuf_new_auto(); 713113940Sphk g_waitfor_event(g_kern_disks, sb, M_WAITOK, NULL); 714113937Sphk error = SYSCTL_OUT(req, sbuf_data(sb), sbuf_len(sb) + 1); 715104451Sphk sbuf_delete(sb); 716104451Sphk return error; 717104451Sphk} 718104451Sphk 719217915SmdfSYSCTL_PROC(_kern, OID_AUTO, disks, 720217915Smdf CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, 0, 721104451Sphk sysctl_disks, "A", "names of available disks"); 722