geom_disk.c revision 219970
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 219970 2011-03-24 19:23:42Z 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> 4992108Sphk#include <sys/sysctl.h> 50111979Sphk#include <sys/devicestat.h> 5192108Sphk#include <machine/md_var.h> 5292108Sphk 5392108Sphk#include <sys/lock.h> 5492108Sphk#include <sys/mutex.h> 5592108Sphk#include <geom/geom.h> 56112952Sphk#include <geom/geom_disk.h> 57112476Sphk#include <geom/geom_int.h> 5892108Sphk 59219970Smav#include <dev/led/led.h> 60219970Smav 61219970Smavstruct g_disk_softc { 62219970Smav struct disk *dp; 63219970Smav struct sysctl_ctx_list sysctl_ctx; 64219970Smav struct sysctl_oid *sysctl_tree; 65219970Smav char led[64]; 66219970Smav uint32_t state; 67219970Smav}; 68219970Smav 69110720Sphkstatic struct mtx g_disk_done_mtx; 70110720Sphk 7192108Sphkstatic g_access_t g_disk_access; 72115473Sphkstatic g_init_t g_disk_init; 73115473Sphkstatic g_fini_t g_disk_fini; 74133314Sphkstatic g_start_t g_disk_start; 75133314Sphkstatic g_ioctl_t g_disk_ioctl; 76133314Sphkstatic g_dumpconf_t g_disk_dumpconf; 7792108Sphk 78141624Sphkstatic struct g_class g_disk_class = { 79112552Sphk .name = "DISK", 80133318Sphk .version = G_VERSION, 81115473Sphk .init = g_disk_init, 82115473Sphk .fini = g_disk_fini, 83133314Sphk .start = g_disk_start, 84133314Sphk .access = g_disk_access, 85133314Sphk .ioctl = g_disk_ioctl, 86133314Sphk .dumpconf = g_disk_dumpconf, 8792108Sphk}; 8892108Sphk 89219970SmavSYSCTL_DECL(_kern_geom); 90219970SmavSYSCTL_NODE(_kern_geom, OID_AUTO, disk, CTLFLAG_RW, 0, "GEOM_DISK stuff"); 91219970Smav 92110720Sphkstatic void 93115473Sphkg_disk_init(struct g_class *mp __unused) 94110720Sphk{ 95115473Sphk 96123271Struckman mtx_init(&g_disk_done_mtx, "g_disk_done", NULL, MTX_DEF); 97110720Sphk} 98104936Sphk 99115473Sphkstatic void 100115473Sphkg_disk_fini(struct g_class *mp __unused) 101115473Sphk{ 102110720Sphk 103115473Sphk mtx_destroy(&g_disk_done_mtx); 104115473Sphk} 105115473Sphk 106115473SphkDECLARE_GEOM_CLASS(g_disk_class, g_disk); 107115473Sphk 108110052Sphkstatic void __inline 109110052Sphkg_disk_lock_giant(struct disk *dp) 110110052Sphk{ 111125975Sphk if (dp->d_flags & DISKFLAG_NEEDSGIANT) 112125975Sphk mtx_lock(&Giant); 113110052Sphk} 114110052Sphk 115110052Sphkstatic void __inline 116110052Sphkg_disk_unlock_giant(struct disk *dp) 117110052Sphk{ 118125975Sphk if (dp->d_flags & DISKFLAG_NEEDSGIANT) 119125975Sphk mtx_unlock(&Giant); 120110052Sphk} 121110052Sphk 12292108Sphkstatic int 12392108Sphkg_disk_access(struct g_provider *pp, int r, int w, int e) 12492108Sphk{ 12592108Sphk struct disk *dp; 126219970Smav struct g_disk_softc *sc; 12792108Sphk int error; 12892108Sphk 12992108Sphk g_trace(G_T_ACCESS, "g_disk_access(%s, %d, %d, %d)", 13092108Sphk pp->name, r, w, e); 13192108Sphk g_topology_assert(); 132219970Smav sc = pp->geom->softc; 133219970Smav if (sc == NULL || (dp = sc->dp) == NULL || dp->d_destroyed) { 134125539Spjd /* 135125539Spjd * Allow decreasing access count even if disk is not 136125539Spjd * avaliable anymore. 137125539Spjd */ 138125539Spjd if (r <= 0 && w <= 0 && e <= 0) 139125539Spjd return (0); 140125975Sphk return (ENXIO); 141125539Spjd } 14292108Sphk r += pp->acr; 14392108Sphk w += pp->acw; 14492108Sphk e += pp->ace; 145110119Sphk error = 0; 14692108Sphk if ((pp->acr + pp->acw + pp->ace) == 0 && (r + w + e) > 0) { 147111668Sphk if (dp->d_open != NULL) { 148110119Sphk g_disk_lock_giant(dp); 149111668Sphk error = dp->d_open(dp); 150166861Sn_hibma if (bootverbose && error != 0) 151110119Sphk printf("Opened disk %s -> %d\n", 152110119Sphk pp->name, error); 153110119Sphk g_disk_unlock_giant(dp); 154110119Sphk } 155105551Sphk pp->mediasize = dp->d_mediasize; 156105551Sphk pp->sectorsize = dp->d_sectorsize; 157110119Sphk dp->d_flags |= DISKFLAG_OPEN; 158110727Sphk if (dp->d_maxsize == 0) { 159110727Sphk printf("WARNING: Disk drive %s%d has no d_maxsize\n", 160110727Sphk dp->d_name, dp->d_unit); 161110727Sphk dp->d_maxsize = DFLTPHYS; 162110727Sphk } 16392108Sphk } else if ((pp->acr + pp->acw + pp->ace) > 0 && (r + w + e) == 0) { 164111668Sphk if (dp->d_close != NULL) { 165110119Sphk g_disk_lock_giant(dp); 166111668Sphk error = dp->d_close(dp); 167110119Sphk if (error != 0) 168110119Sphk printf("Closed disk %s -> %d\n", 169110119Sphk pp->name, error); 170110119Sphk g_disk_unlock_giant(dp); 171110119Sphk } 172219970Smav sc->state = G_STATE_ACTIVE; 173219970Smav if (sc->led[0] != 0) 174219970Smav led_set(sc->led, "0"); 175110119Sphk dp->d_flags &= ~DISKFLAG_OPEN; 17692108Sphk } 17792108Sphk return (error); 17892108Sphk} 17992108Sphk 18092108Sphkstatic void 18195038Sphkg_disk_kerneldump(struct bio *bp, struct disk *dp) 182219950Smav{ 18395038Sphk struct g_kerneldump *gkd; 184104450Sphk struct g_geom *gp; 18595038Sphk 18695038Sphk gkd = (struct g_kerneldump*)bp->bio_data; 187104450Sphk gp = bp->bio_to->geom; 188104450Sphk g_trace(G_T_TOPOLOGY, "g_disk_kernedump(%s, %jd, %jd)", 189104450Sphk gp->name, (intmax_t)gkd->offset, (intmax_t)gkd->length); 190120572Sphk if (dp->d_dump == NULL) { 191120572Sphk g_io_deliver(bp, ENODEV); 192120572Sphk return; 193120572Sphk } 194219950Smav gkd->di.dumper = dp->d_dump; 195219950Smav gkd->di.priv = dp; 196219950Smav gkd->di.blocksize = dp->d_sectorsize; 197219950Smav gkd->di.maxiosize = dp->d_maxsize; 198219950Smav gkd->di.mediaoffset = gkd->offset; 199140968Sphk if ((gkd->offset + gkd->length) > dp->d_mediasize) 200140968Sphk gkd->length = dp->d_mediasize - gkd->offset; 201219950Smav gkd->di.mediasize = gkd->length; 202219950Smav g_io_deliver(bp, 0); 20395038Sphk} 20495038Sphk 20595038Sphkstatic void 206219970Smavg_disk_setstate(struct bio *bp, struct g_disk_softc *sc) 207219970Smav{ 208219970Smav const char *cmd; 209219970Smav 210219970Smav memcpy(&sc->state, bp->bio_data, sizeof(sc->state)); 211219970Smav if (sc->led[0] != 0) { 212219970Smav switch (sc->state) { 213219970Smav case G_STATE_FAILED: 214219970Smav cmd = "1"; 215219970Smav break; 216219970Smav case G_STATE_REBUILD: 217219970Smav cmd = "f5"; 218219970Smav break; 219219970Smav case G_STATE_RESYNC: 220219970Smav cmd = "f1"; 221219970Smav break; 222219970Smav default: 223219970Smav cmd = "0"; 224219970Smav break; 225219970Smav } 226219970Smav led_set(sc->led, cmd); 227219970Smav } 228219970Smav g_io_deliver(bp, 0); 229219970Smav} 230219970Smav 231219970Smavstatic void 23292108Sphkg_disk_done(struct bio *bp) 23392108Sphk{ 234111979Sphk struct bio *bp2; 235111979Sphk struct disk *dp; 236219970Smav struct g_disk_softc *sc; 23792108Sphk 238110720Sphk /* See "notes" for why we need a mutex here */ 239110720Sphk /* XXX: will witness accept a mix of Giant/unGiant drivers here ? */ 240110720Sphk mtx_lock(&g_disk_done_mtx); 24192108Sphk bp->bio_completed = bp->bio_length - bp->bio_resid; 242111979Sphk 243111979Sphk bp2 = bp->bio_parent; 244111979Sphk if (bp2->bio_error == 0) 245111979Sphk bp2->bio_error = bp->bio_error; 246111979Sphk bp2->bio_completed += bp->bio_completed; 247163833Spjd if ((bp->bio_cmd & (BIO_READ|BIO_WRITE|BIO_DELETE)) && 248219970Smav (sc = bp2->bio_to->geom->softc) && 249219970Smav (dp = sc->dp)) { 250150759Stegge devstat_end_transaction_bio(dp->d_devstat, bp); 251163833Spjd } 252111979Sphk g_destroy_bio(bp); 253111979Sphk bp2->bio_inbed++; 254111979Sphk if (bp2->bio_children == bp2->bio_inbed) { 255112259Sphk bp2->bio_resid = bp2->bio_bcount - bp2->bio_completed; 256111979Sphk g_io_deliver(bp2, bp2->bio_error); 257111979Sphk } 258110720Sphk mtx_unlock(&g_disk_done_mtx); 25992108Sphk} 26092108Sphk 261119660Sphkstatic int 262138732Sphkg_disk_ioctl(struct g_provider *pp, u_long cmd, void * data, int fflag, struct thread *td) 263119660Sphk{ 264119660Sphk struct g_geom *gp; 265119660Sphk struct disk *dp; 266219970Smav struct g_disk_softc *sc; 267119660Sphk int error; 268119660Sphk 269119660Sphk gp = pp->geom; 270219970Smav sc = gp->softc; 271219970Smav dp = sc->dp; 272119660Sphk 273119660Sphk if (dp->d_ioctl == NULL) 274119660Sphk return (ENOIOCTL); 275119660Sphk g_disk_lock_giant(dp); 276138732Sphk error = dp->d_ioctl(dp, cmd, data, fflag, td); 277119660Sphk g_disk_unlock_giant(dp); 278119660Sphk return(error); 279119660Sphk} 280119660Sphk 28192108Sphkstatic void 28292108Sphkg_disk_start(struct bio *bp) 28392108Sphk{ 284110720Sphk struct bio *bp2, *bp3; 28592108Sphk struct disk *dp; 286219970Smav struct g_disk_softc *sc; 28792403Sphk int error; 288110720Sphk off_t off; 28992108Sphk 290219970Smav sc = bp->bio_to->geom->softc; 291219970Smav if (sc == NULL || (dp = sc->dp) == NULL || dp->d_destroyed) { 292115214Sphk g_io_deliver(bp, ENXIO); 293143791Sphk return; 294143791Sphk } 295104609Sphk error = EJUSTRETURN; 29692108Sphk switch(bp->bio_cmd) { 297104609Sphk case BIO_DELETE: 298110119Sphk if (!(dp->d_flags & DISKFLAG_CANDELETE)) { 299104609Sphk error = 0; 300104609Sphk break; 301104609Sphk } 302104609Sphk /* fall-through */ 30392108Sphk case BIO_READ: 30492108Sphk case BIO_WRITE: 305110720Sphk off = 0; 306110720Sphk bp3 = NULL; 30792108Sphk bp2 = g_clone_bio(bp); 308110477Sphk if (bp2 == NULL) { 309110477Sphk error = ENOMEM; 310110477Sphk break; 311110477Sphk } 312110720Sphk do { 313110720Sphk bp2->bio_offset += off; 314110720Sphk bp2->bio_length -= off; 315110766Stegge bp2->bio_data += off; 316110720Sphk if (bp2->bio_length > dp->d_maxsize) { 317110720Sphk /* 318110720Sphk * XXX: If we have a stripesize we should really 319110720Sphk * use it here. 320110720Sphk */ 321110720Sphk bp2->bio_length = dp->d_maxsize; 322110720Sphk off += dp->d_maxsize; 323110720Sphk /* 324110720Sphk * To avoid a race, we need to grab the next bio 325110720Sphk * before we schedule this one. See "notes". 326110720Sphk */ 327110720Sphk bp3 = g_clone_bio(bp); 328110720Sphk if (bp3 == NULL) 329110720Sphk bp->bio_error = ENOMEM; 330110720Sphk } 331110720Sphk bp2->bio_done = g_disk_done; 332110720Sphk bp2->bio_pblkno = bp2->bio_offset / dp->d_sectorsize; 333110720Sphk bp2->bio_bcount = bp2->bio_length; 334110720Sphk bp2->bio_disk = dp; 335150759Stegge devstat_start_transaction_bio(dp->d_devstat, bp2); 336110720Sphk g_disk_lock_giant(dp); 337110720Sphk dp->d_strategy(bp2); 338110720Sphk g_disk_unlock_giant(dp); 339110720Sphk bp2 = bp3; 340110720Sphk bp3 = NULL; 341110720Sphk } while (bp2 != NULL); 34292108Sphk break; 34392108Sphk case BIO_GETATTR: 344216794Skib if (g_handleattr_int(bp, "GEOM::candelete", 345216794Skib (dp->d_flags & DISKFLAG_CANDELETE) != 0)) 34692403Sphk break; 347216794Skib else if (g_handleattr_int(bp, "GEOM::fwsectors", 348216794Skib dp->d_fwsectors)) 349216794Skib break; 350103714Sphk else if (g_handleattr_int(bp, "GEOM::fwheads", dp->d_fwheads)) 35192403Sphk break; 35298066Sphk else if (g_handleattr_off_t(bp, "GEOM::frontstuff", 0)) 35394287Sphk break; 354169285Spjd else if (g_handleattr_str(bp, "GEOM::ident", dp->d_ident)) 355169285Spjd break; 356210471Smav else if (g_handleattr(bp, "GEOM::hba_vendor", 357210471Smav &dp->d_hba_vendor, 2)) 358210471Smav break; 359210471Smav else if (g_handleattr(bp, "GEOM::hba_device", 360210471Smav &dp->d_hba_device, 2)) 361210471Smav break; 362210471Smav else if (g_handleattr(bp, "GEOM::hba_subvendor", 363210471Smav &dp->d_hba_subvendor, 2)) 364210471Smav break; 365210471Smav else if (g_handleattr(bp, "GEOM::hba_subdevice", 366210471Smav &dp->d_hba_subdevice, 2)) 367210471Smav break; 36895038Sphk else if (!strcmp(bp->bio_attribute, "GEOM::kerneldump")) 36995038Sphk g_disk_kerneldump(bp, dp); 370219970Smav else if (!strcmp(bp->bio_attribute, "GEOM::setstate")) 371219970Smav g_disk_setstate(bp, sc); 372119660Sphk else 37392403Sphk error = ENOIOCTL; 37492403Sphk break; 375163833Spjd case BIO_FLUSH: 376163833Spjd g_trace(G_T_TOPOLOGY, "g_disk_flushcache(%s)", 377163833Spjd bp->bio_to->name); 378163833Spjd if (!(dp->d_flags & DISKFLAG_CANFLUSHCACHE)) { 379163833Spjd g_io_deliver(bp, ENODEV); 380163833Spjd return; 381163833Spjd } 382163833Spjd bp2 = g_clone_bio(bp); 383163833Spjd if (bp2 == NULL) { 384163833Spjd g_io_deliver(bp, ENOMEM); 385163833Spjd return; 386163833Spjd } 387163833Spjd bp2->bio_done = g_disk_done; 388163833Spjd bp2->bio_disk = dp; 389163833Spjd g_disk_lock_giant(dp); 390163833Spjd dp->d_strategy(bp2); 391163833Spjd g_disk_unlock_giant(dp); 392163833Spjd break; 39392108Sphk default: 39492403Sphk error = EOPNOTSUPP; 39592403Sphk break; 39692403Sphk } 397104609Sphk if (error != EJUSTRETURN) 398104195Sphk g_io_deliver(bp, error); 39992403Sphk return; 40092108Sphk} 40192108Sphk 402104936Sphkstatic void 403107953Sphkg_disk_dumpconf(struct sbuf *sb, const char *indent, struct g_geom *gp, struct g_consumer *cp, struct g_provider *pp) 404105537Sphk{ 405105537Sphk struct disk *dp; 406219970Smav struct g_disk_softc *sc; 407105537Sphk 408219970Smav sc = gp->softc; 409219970Smav if (sc == NULL || (dp = sc->dp) == NULL) 410120374Sphk return; 411106101Sphk if (indent == NULL) { 412106101Sphk sbuf_printf(sb, " hd %u", dp->d_fwheads); 413106101Sphk sbuf_printf(sb, " sc %u", dp->d_fwsectors); 414106101Sphk return; 415106101Sphk } 416105539Sphk if (pp != NULL) { 417105537Sphk sbuf_printf(sb, "%s<fwheads>%u</fwheads>\n", 418105537Sphk indent, dp->d_fwheads); 419105537Sphk sbuf_printf(sb, "%s<fwsectors>%u</fwsectors>\n", 420105537Sphk indent, dp->d_fwsectors); 421219056Snwhitehorn sbuf_printf(sb, "%s<ident>%s</ident>\n", indent, dp->d_ident); 422219056Snwhitehorn sbuf_printf(sb, "%s<descr>%s</descr>\n", indent, dp->d_descr); 423105537Sphk } 424105537Sphk} 425105537Sphk 426105537Sphkstatic void 427115309Sphkg_disk_create(void *arg, int flag) 42892108Sphk{ 42992108Sphk struct g_geom *gp; 43092108Sphk struct g_provider *pp; 431110708Sphk struct disk *dp; 432219970Smav struct g_disk_softc *sc; 433219970Smav char tmpstr[80]; 43492108Sphk 435115309Sphk if (flag == EV_CANCEL) 436115309Sphk return; 437104936Sphk g_topology_assert(); 438110708Sphk dp = arg; 439219970Smav sc = g_malloc(sizeof(*sc), M_WAITOK | M_ZERO); 440219970Smav sc->dp = dp; 441110708Sphk gp = g_new_geomf(&g_disk_class, "%s%d", dp->d_name, dp->d_unit); 442219970Smav gp->softc = sc; 443104936Sphk pp = g_new_providerf(gp, "%s", gp->name); 444110708Sphk pp->mediasize = dp->d_mediasize; 445110708Sphk pp->sectorsize = dp->d_sectorsize; 446110708Sphk if (dp->d_flags & DISKFLAG_CANDELETE) 447110708Sphk pp->flags |= G_PF_CANDELETE; 448110710Sphk pp->stripeoffset = dp->d_stripeoffset; 449110710Sphk pp->stripesize = dp->d_stripesize; 450105957Sphk if (bootverbose) 451105957Sphk printf("GEOM: new disk %s\n", gp->name); 452219970Smav sysctl_ctx_init(&sc->sysctl_ctx); 453219970Smav snprintf(tmpstr, sizeof(tmpstr), "GEOM disk %s", gp->name); 454219970Smav sc->sysctl_tree = SYSCTL_ADD_NODE(&sc->sysctl_ctx, 455219970Smav SYSCTL_STATIC_CHILDREN(_kern_geom_disk), OID_AUTO, gp->name, 456219970Smav CTLFLAG_RD, 0, tmpstr); 457219970Smav if (sc->sysctl_tree != NULL) { 458219970Smav snprintf(tmpstr, sizeof(tmpstr), 459219970Smav "kern.geom.disk.%s.led", gp->name); 460219970Smav TUNABLE_STR_FETCH(tmpstr, sc->led, sizeof(sc->led)); 461219970Smav SYSCTL_ADD_STRING(&sc->sysctl_ctx, 462219970Smav SYSCTL_CHILDREN(sc->sysctl_tree), OID_AUTO, "led", 463219970Smav CTLFLAG_RW | CTLFLAG_TUN, sc->led, sizeof(sc->led), 464219970Smav "LED name"); 465219970Smav } 466219970Smav pp->private = sc; 467112989Sphk dp->d_geom = gp; 468112989Sphk g_error_provider(pp, 0); 469104936Sphk} 470104936Sphk 471119652Sphkstatic void 472119652Sphkg_disk_destroy(void *ptr, int flag) 473119652Sphk{ 474125975Sphk struct disk *dp; 475119652Sphk struct g_geom *gp; 476219970Smav struct g_disk_softc *sc; 477104936Sphk 478119652Sphk g_topology_assert(); 479125975Sphk dp = ptr; 480125975Sphk gp = dp->d_geom; 481140261Sphk if (gp != NULL) { 482219970Smav sc = gp->softc; 483219970Smav if (sc->sysctl_tree != NULL) { 484219970Smav sysctl_ctx_free(&sc->sysctl_ctx); 485219970Smav sc->sysctl_tree = NULL; 486219970Smav } 487219970Smav if (sc->led[0] != 0) { 488219970Smav led_set(sc->led, "0"); 489219970Smav sc->led[0] = 0; 490219970Smav } 491219970Smav g_free(sc); 492140261Sphk gp->softc = NULL; 493140261Sphk g_wither_geom(gp, ENXIO); 494140261Sphk } 495125975Sphk g_free(dp); 496119652Sphk} 497104936Sphk 498169287Spjd/* 499196823Spjd * We only allow printable characters in disk ident, 500196823Spjd * the rest is converted to 'x<HH>'. 501169287Spjd */ 502169287Spjdstatic void 503169287Spjdg_disk_ident_adjust(char *ident, size_t size) 504169287Spjd{ 505196823Spjd char *p, tmp[4], newid[DISK_IDENT_SIZE]; 506169287Spjd 507196823Spjd newid[0] = '\0'; 508196823Spjd for (p = ident; *p != '\0'; p++) { 509196823Spjd if (isprint(*p)) { 510196823Spjd tmp[0] = *p; 511196823Spjd tmp[1] = '\0'; 512196823Spjd } else { 513196823Spjd snprintf(tmp, sizeof(tmp), "x%02hhx", 514196823Spjd *(unsigned char *)p); 515196823Spjd } 516196823Spjd if (strlcat(newid, tmp, sizeof(newid)) >= sizeof(newid)) 517169287Spjd break; 518169287Spjd } 519169287Spjd bzero(ident, size); 520169287Spjd strlcpy(ident, newid, size); 521169287Spjd} 522169287Spjd 523125975Sphkstruct disk * 524125975Sphkdisk_alloc() 525125975Sphk{ 526125975Sphk struct disk *dp; 527125975Sphk 528125975Sphk dp = g_malloc(sizeof *dp, M_WAITOK | M_ZERO); 529125975Sphk return (dp); 530125975Sphk} 531125975Sphk 532111668Sphkvoid 533125975Sphkdisk_create(struct disk *dp, int version) 534104936Sphk{ 535169285Spjd if (version != DISK_VERSION_00 && version != DISK_VERSION_01) { 536125975Sphk printf("WARNING: Attempt to add disk %s%d %s", 537125975Sphk dp->d_name, dp->d_unit, 538125975Sphk " using incompatible ABI version of disk(9)\n"); 539125975Sphk printf("WARNING: Ignoring disk %s%d\n", 540125975Sphk dp->d_name, dp->d_unit); 541125975Sphk return; 542125975Sphk } 543110119Sphk KASSERT(dp->d_strategy != NULL, ("disk_create need d_strategy")); 544110119Sphk KASSERT(dp->d_name != NULL, ("disk_create need d_name")); 545110119Sphk KASSERT(*dp->d_name != 0, ("disk_create need d_name")); 546110317Sphk KASSERT(strlen(dp->d_name) < SPECNAMELEN - 4, ("disk name too long")); 547120374Sphk if (dp->d_devstat == NULL) 548120374Sphk dp->d_devstat = devstat_new_entry(dp->d_name, dp->d_unit, 549120374Sphk dp->d_sectorsize, DEVSTAT_ALL_SUPPORTED, 550120374Sphk DEVSTAT_TYPE_DIRECT, DEVSTAT_PRIORITY_MAX); 551112989Sphk dp->d_geom = NULL; 552169287Spjd g_disk_ident_adjust(dp->d_ident, sizeof(dp->d_ident)); 553113937Sphk g_post_event(g_disk_create, dp, M_WAITOK, dp, NULL); 55492108Sphk} 55592108Sphk 55692108Sphkvoid 557111216Sphkdisk_destroy(struct disk *dp) 55892108Sphk{ 55992108Sphk 560112989Sphk g_cancel_event(dp); 561125975Sphk dp->d_destroyed = 1; 562131207Sphk if (dp->d_devstat != NULL) 563131207Sphk devstat_remove_entry(dp->d_devstat); 564131267Sphk g_post_event(g_disk_destroy, dp, M_WAITOK, NULL); 56592108Sphk} 56692108Sphk 567152565Sjdpvoid 568152565Sjdpdisk_gone(struct disk *dp) 569152565Sjdp{ 570152565Sjdp struct g_geom *gp; 571152565Sjdp struct g_provider *pp; 572152565Sjdp 573152565Sjdp gp = dp->d_geom; 574152565Sjdp if (gp != NULL) 575152565Sjdp LIST_FOREACH(pp, &gp->provider, provider) 576157619Smarcel g_wither_provider(pp, ENXIO); 577152565Sjdp} 578152565Sjdp 579104451Sphkstatic void 580112988Sphkg_kern_disks(void *p, int flag __unused) 581104451Sphk{ 582104451Sphk struct sbuf *sb; 583104451Sphk struct g_geom *gp; 584104451Sphk char *sp; 585104451Sphk 586104451Sphk sb = p; 587104451Sphk sp = ""; 588104451Sphk g_topology_assert(); 589104451Sphk LIST_FOREACH(gp, &g_disk_class.geom, geom) { 590104451Sphk sbuf_printf(sb, "%s%s", sp, gp->name); 591104451Sphk sp = " "; 592104451Sphk } 593104451Sphk sbuf_finish(sb); 594104451Sphk} 595104451Sphk 596104451Sphkstatic int 597104451Sphksysctl_disks(SYSCTL_HANDLER_ARGS) 598104451Sphk{ 599104451Sphk int error; 600104451Sphk struct sbuf *sb; 601104451Sphk 602181463Sdes sb = sbuf_new_auto(); 603113940Sphk g_waitfor_event(g_kern_disks, sb, M_WAITOK, NULL); 604113937Sphk error = SYSCTL_OUT(req, sbuf_data(sb), sbuf_len(sb) + 1); 605104451Sphk sbuf_delete(sb); 606104451Sphk return error; 607104451Sphk} 608104451Sphk 609217915SmdfSYSCTL_PROC(_kern, OID_AUTO, disks, 610217915Smdf CTLTYPE_STRING | CTLFLAG_RD | CTLFLAG_MPSAFE, NULL, 0, 611104451Sphk sysctl_disks, "A", "names of available disks"); 612104519Sphk 613