1080361d6SPawel Jakub Dawidek /*- 299394c59SPawel Jakub Dawidek * Copyright (c) 2005 Pawel Jakub Dawidek <pjd@FreeBSD.org> 3080361d6SPawel Jakub Dawidek * All rights reserved. 4080361d6SPawel Jakub Dawidek * 5080361d6SPawel Jakub Dawidek * Redistribution and use in source and binary forms, with or without 6080361d6SPawel Jakub Dawidek * modification, are permitted provided that the following conditions 7080361d6SPawel Jakub Dawidek * are met: 8080361d6SPawel Jakub Dawidek * 1. Redistributions of source code must retain the above copyright 9080361d6SPawel Jakub Dawidek * notice, this list of conditions and the following disclaimer. 10080361d6SPawel Jakub Dawidek * 2. Redistributions in binary form must reproduce the above copyright 11080361d6SPawel Jakub Dawidek * notice, this list of conditions and the following disclaimer in the 12080361d6SPawel Jakub Dawidek * documentation and/or other materials provided with the distribution. 13080361d6SPawel Jakub Dawidek * 14080361d6SPawel Jakub Dawidek * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 15080361d6SPawel Jakub Dawidek * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16080361d6SPawel Jakub Dawidek * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17080361d6SPawel Jakub Dawidek * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 18080361d6SPawel Jakub Dawidek * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19080361d6SPawel Jakub Dawidek * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20080361d6SPawel Jakub Dawidek * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21080361d6SPawel Jakub Dawidek * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22080361d6SPawel Jakub Dawidek * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23080361d6SPawel Jakub Dawidek * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24080361d6SPawel Jakub Dawidek * SUCH DAMAGE. 25080361d6SPawel Jakub Dawidek */ 26080361d6SPawel Jakub Dawidek 27080361d6SPawel Jakub Dawidek #include <sys/cdefs.h> 28080361d6SPawel Jakub Dawidek __FBSDID("$FreeBSD$"); 29080361d6SPawel Jakub Dawidek 30080361d6SPawel Jakub Dawidek #include <sys/param.h> 31080361d6SPawel Jakub Dawidek #include <sys/systm.h> 32080361d6SPawel Jakub Dawidek #include <sys/kernel.h> 33080361d6SPawel Jakub Dawidek #include <sys/module.h> 34080361d6SPawel Jakub Dawidek #include <sys/lock.h> 35080361d6SPawel Jakub Dawidek #include <sys/mutex.h> 36080361d6SPawel Jakub Dawidek #include <sys/bio.h> 37080361d6SPawel Jakub Dawidek #include <sys/sysctl.h> 38080361d6SPawel Jakub Dawidek #include <sys/malloc.h> 39080361d6SPawel Jakub Dawidek #include <vm/uma.h> 40080361d6SPawel Jakub Dawidek #include <geom/geom.h> 41080361d6SPawel Jakub Dawidek #include <geom/shsec/g_shsec.h> 42080361d6SPawel Jakub Dawidek 43080361d6SPawel Jakub Dawidek 445bb84bc8SRobert Watson static MALLOC_DEFINE(M_SHSEC, "shsec_data", "GEOM_SHSEC Data"); 45080361d6SPawel Jakub Dawidek 46080361d6SPawel Jakub Dawidek static uma_zone_t g_shsec_zone; 47080361d6SPawel Jakub Dawidek 48080361d6SPawel Jakub Dawidek static int g_shsec_destroy(struct g_shsec_softc *sc, boolean_t force); 49080361d6SPawel Jakub Dawidek static int g_shsec_destroy_geom(struct gctl_req *req, struct g_class *mp, 50080361d6SPawel Jakub Dawidek struct g_geom *gp); 51080361d6SPawel Jakub Dawidek 52080361d6SPawel Jakub Dawidek static g_taste_t g_shsec_taste; 53080361d6SPawel Jakub Dawidek static g_ctl_req_t g_shsec_config; 54080361d6SPawel Jakub Dawidek static g_dumpconf_t g_shsec_dumpconf; 55080361d6SPawel Jakub Dawidek static g_init_t g_shsec_init; 56080361d6SPawel Jakub Dawidek static g_fini_t g_shsec_fini; 57080361d6SPawel Jakub Dawidek 58080361d6SPawel Jakub Dawidek struct g_class g_shsec_class = { 59080361d6SPawel Jakub Dawidek .name = G_SHSEC_CLASS_NAME, 60080361d6SPawel Jakub Dawidek .version = G_VERSION, 61080361d6SPawel Jakub Dawidek .ctlreq = g_shsec_config, 62080361d6SPawel Jakub Dawidek .taste = g_shsec_taste, 63080361d6SPawel Jakub Dawidek .destroy_geom = g_shsec_destroy_geom, 64080361d6SPawel Jakub Dawidek .init = g_shsec_init, 65080361d6SPawel Jakub Dawidek .fini = g_shsec_fini 66080361d6SPawel Jakub Dawidek }; 67080361d6SPawel Jakub Dawidek 68080361d6SPawel Jakub Dawidek SYSCTL_DECL(_kern_geom); 69080361d6SPawel Jakub Dawidek SYSCTL_NODE(_kern_geom, OID_AUTO, shsec, CTLFLAG_RW, 0, "GEOM_SHSEC stuff"); 70080361d6SPawel Jakub Dawidek static u_int g_shsec_debug = 0; 71080361d6SPawel Jakub Dawidek TUNABLE_INT("kern.geom.shsec.debug", &g_shsec_debug); 72080361d6SPawel Jakub Dawidek SYSCTL_UINT(_kern_geom_shsec, OID_AUTO, debug, CTLFLAG_RW, &g_shsec_debug, 0, 73080361d6SPawel Jakub Dawidek "Debug level"); 74080361d6SPawel Jakub Dawidek static u_int g_shsec_maxmem = MAXPHYS * 100; 75080361d6SPawel Jakub Dawidek TUNABLE_INT("kern.geom.shsec.maxmem", &g_shsec_maxmem); 76080361d6SPawel Jakub Dawidek SYSCTL_UINT(_kern_geom_shsec, OID_AUTO, maxmem, CTLFLAG_RD, &g_shsec_maxmem, 77080361d6SPawel Jakub Dawidek 0, "Maximum memory that can be allocated for I/O (in bytes)"); 78080361d6SPawel Jakub Dawidek static u_int g_shsec_alloc_failed = 0; 79080361d6SPawel Jakub Dawidek SYSCTL_UINT(_kern_geom_shsec, OID_AUTO, alloc_failed, CTLFLAG_RD, 80080361d6SPawel Jakub Dawidek &g_shsec_alloc_failed, 0, "How many times I/O allocation failed"); 81080361d6SPawel Jakub Dawidek 82080361d6SPawel Jakub Dawidek /* 83080361d6SPawel Jakub Dawidek * Greatest Common Divisor. 84080361d6SPawel Jakub Dawidek */ 85080361d6SPawel Jakub Dawidek static u_int 86080361d6SPawel Jakub Dawidek gcd(u_int a, u_int b) 87080361d6SPawel Jakub Dawidek { 88080361d6SPawel Jakub Dawidek u_int c; 89080361d6SPawel Jakub Dawidek 90080361d6SPawel Jakub Dawidek while (b != 0) { 91080361d6SPawel Jakub Dawidek c = a; 92080361d6SPawel Jakub Dawidek a = b; 93080361d6SPawel Jakub Dawidek b = (c % b); 94080361d6SPawel Jakub Dawidek } 95080361d6SPawel Jakub Dawidek return (a); 96080361d6SPawel Jakub Dawidek } 97080361d6SPawel Jakub Dawidek 98080361d6SPawel Jakub Dawidek /* 99080361d6SPawel Jakub Dawidek * Least Common Multiple. 100080361d6SPawel Jakub Dawidek */ 101080361d6SPawel Jakub Dawidek static u_int 102080361d6SPawel Jakub Dawidek lcm(u_int a, u_int b) 103080361d6SPawel Jakub Dawidek { 104080361d6SPawel Jakub Dawidek 105080361d6SPawel Jakub Dawidek return ((a * b) / gcd(a, b)); 106080361d6SPawel Jakub Dawidek } 107080361d6SPawel Jakub Dawidek 108080361d6SPawel Jakub Dawidek static void 109080361d6SPawel Jakub Dawidek g_shsec_init(struct g_class *mp __unused) 110080361d6SPawel Jakub Dawidek { 111080361d6SPawel Jakub Dawidek 112080361d6SPawel Jakub Dawidek g_shsec_zone = uma_zcreate("g_shsec_zone", MAXPHYS, NULL, NULL, NULL, 113080361d6SPawel Jakub Dawidek NULL, 0, 0); 114080361d6SPawel Jakub Dawidek g_shsec_maxmem -= g_shsec_maxmem % MAXPHYS; 115080361d6SPawel Jakub Dawidek uma_zone_set_max(g_shsec_zone, g_shsec_maxmem / MAXPHYS); 116080361d6SPawel Jakub Dawidek } 117080361d6SPawel Jakub Dawidek 118080361d6SPawel Jakub Dawidek static void 119080361d6SPawel Jakub Dawidek g_shsec_fini(struct g_class *mp __unused) 120080361d6SPawel Jakub Dawidek { 121080361d6SPawel Jakub Dawidek 122080361d6SPawel Jakub Dawidek uma_zdestroy(g_shsec_zone); 123080361d6SPawel Jakub Dawidek } 124080361d6SPawel Jakub Dawidek 125080361d6SPawel Jakub Dawidek /* 126080361d6SPawel Jakub Dawidek * Return the number of valid disks. 127080361d6SPawel Jakub Dawidek */ 128080361d6SPawel Jakub Dawidek static u_int 129080361d6SPawel Jakub Dawidek g_shsec_nvalid(struct g_shsec_softc *sc) 130080361d6SPawel Jakub Dawidek { 131080361d6SPawel Jakub Dawidek u_int i, no; 132080361d6SPawel Jakub Dawidek 133080361d6SPawel Jakub Dawidek no = 0; 134080361d6SPawel Jakub Dawidek for (i = 0; i < sc->sc_ndisks; i++) { 135080361d6SPawel Jakub Dawidek if (sc->sc_disks[i] != NULL) 136080361d6SPawel Jakub Dawidek no++; 137080361d6SPawel Jakub Dawidek } 138080361d6SPawel Jakub Dawidek 139080361d6SPawel Jakub Dawidek return (no); 140080361d6SPawel Jakub Dawidek } 141080361d6SPawel Jakub Dawidek 142080361d6SPawel Jakub Dawidek static void 143080361d6SPawel Jakub Dawidek g_shsec_remove_disk(struct g_consumer *cp) 144080361d6SPawel Jakub Dawidek { 145080361d6SPawel Jakub Dawidek struct g_shsec_softc *sc; 146080361d6SPawel Jakub Dawidek u_int no; 147080361d6SPawel Jakub Dawidek 148080361d6SPawel Jakub Dawidek KASSERT(cp != NULL, ("Non-valid disk in %s.", __func__)); 149080361d6SPawel Jakub Dawidek sc = (struct g_shsec_softc *)cp->private; 150080361d6SPawel Jakub Dawidek KASSERT(sc != NULL, ("NULL sc in %s.", __func__)); 151080361d6SPawel Jakub Dawidek no = cp->index; 152080361d6SPawel Jakub Dawidek 153080361d6SPawel Jakub Dawidek G_SHSEC_DEBUG(0, "Disk %s removed from %s.", cp->provider->name, 154080361d6SPawel Jakub Dawidek sc->sc_name); 155080361d6SPawel Jakub Dawidek 156080361d6SPawel Jakub Dawidek sc->sc_disks[no] = NULL; 157080361d6SPawel Jakub Dawidek if (sc->sc_provider != NULL) { 158080361d6SPawel Jakub Dawidek g_orphan_provider(sc->sc_provider, ENXIO); 159080361d6SPawel Jakub Dawidek sc->sc_provider = NULL; 160080361d6SPawel Jakub Dawidek G_SHSEC_DEBUG(0, "Device %s removed.", sc->sc_name); 161080361d6SPawel Jakub Dawidek } 162080361d6SPawel Jakub Dawidek 163080361d6SPawel Jakub Dawidek if (cp->acr > 0 || cp->acw > 0 || cp->ace > 0) 164080361d6SPawel Jakub Dawidek g_access(cp, -cp->acr, -cp->acw, -cp->ace); 165080361d6SPawel Jakub Dawidek g_detach(cp); 166080361d6SPawel Jakub Dawidek g_destroy_consumer(cp); 167080361d6SPawel Jakub Dawidek } 168080361d6SPawel Jakub Dawidek 169080361d6SPawel Jakub Dawidek static void 170080361d6SPawel Jakub Dawidek g_shsec_orphan(struct g_consumer *cp) 171080361d6SPawel Jakub Dawidek { 172080361d6SPawel Jakub Dawidek struct g_shsec_softc *sc; 173080361d6SPawel Jakub Dawidek struct g_geom *gp; 174080361d6SPawel Jakub Dawidek 175080361d6SPawel Jakub Dawidek g_topology_assert(); 176080361d6SPawel Jakub Dawidek gp = cp->geom; 177080361d6SPawel Jakub Dawidek sc = gp->softc; 178080361d6SPawel Jakub Dawidek if (sc == NULL) 179080361d6SPawel Jakub Dawidek return; 180080361d6SPawel Jakub Dawidek 181080361d6SPawel Jakub Dawidek g_shsec_remove_disk(cp); 182080361d6SPawel Jakub Dawidek /* If there are no valid disks anymore, remove device. */ 183080361d6SPawel Jakub Dawidek if (g_shsec_nvalid(sc) == 0) 184080361d6SPawel Jakub Dawidek g_shsec_destroy(sc, 1); 185080361d6SPawel Jakub Dawidek } 186080361d6SPawel Jakub Dawidek 187080361d6SPawel Jakub Dawidek static int 188080361d6SPawel Jakub Dawidek g_shsec_access(struct g_provider *pp, int dr, int dw, int de) 189080361d6SPawel Jakub Dawidek { 190080361d6SPawel Jakub Dawidek struct g_consumer *cp1, *cp2; 191080361d6SPawel Jakub Dawidek struct g_shsec_softc *sc; 192080361d6SPawel Jakub Dawidek struct g_geom *gp; 193080361d6SPawel Jakub Dawidek int error; 194080361d6SPawel Jakub Dawidek 195080361d6SPawel Jakub Dawidek gp = pp->geom; 196080361d6SPawel Jakub Dawidek sc = gp->softc; 197080361d6SPawel Jakub Dawidek 198080361d6SPawel Jakub Dawidek if (sc == NULL) { 199080361d6SPawel Jakub Dawidek /* 200080361d6SPawel Jakub Dawidek * It looks like geom is being withered. 201080361d6SPawel Jakub Dawidek * In that case we allow only negative requests. 202080361d6SPawel Jakub Dawidek */ 203080361d6SPawel Jakub Dawidek KASSERT(dr <= 0 && dw <= 0 && de <= 0, 204080361d6SPawel Jakub Dawidek ("Positive access request (device=%s).", pp->name)); 205080361d6SPawel Jakub Dawidek if ((pp->acr + dr) == 0 && (pp->acw + dw) == 0 && 206080361d6SPawel Jakub Dawidek (pp->ace + de) == 0) { 207080361d6SPawel Jakub Dawidek G_SHSEC_DEBUG(0, "Device %s definitely destroyed.", 208080361d6SPawel Jakub Dawidek gp->name); 209080361d6SPawel Jakub Dawidek } 210080361d6SPawel Jakub Dawidek return (0); 211080361d6SPawel Jakub Dawidek } 212080361d6SPawel Jakub Dawidek 213080361d6SPawel Jakub Dawidek /* On first open, grab an extra "exclusive" bit */ 214080361d6SPawel Jakub Dawidek if (pp->acr == 0 && pp->acw == 0 && pp->ace == 0) 215080361d6SPawel Jakub Dawidek de++; 216080361d6SPawel Jakub Dawidek /* ... and let go of it on last close */ 217080361d6SPawel Jakub Dawidek if ((pp->acr + dr) == 0 && (pp->acw + dw) == 0 && (pp->ace + de) == 0) 218080361d6SPawel Jakub Dawidek de--; 219080361d6SPawel Jakub Dawidek 220080361d6SPawel Jakub Dawidek error = ENXIO; 221080361d6SPawel Jakub Dawidek LIST_FOREACH(cp1, &gp->consumer, consumer) { 222080361d6SPawel Jakub Dawidek error = g_access(cp1, dr, dw, de); 223080361d6SPawel Jakub Dawidek if (error == 0) 224080361d6SPawel Jakub Dawidek continue; 225080361d6SPawel Jakub Dawidek /* 226080361d6SPawel Jakub Dawidek * If we fail here, backout all previous changes. 227080361d6SPawel Jakub Dawidek */ 228080361d6SPawel Jakub Dawidek LIST_FOREACH(cp2, &gp->consumer, consumer) { 229080361d6SPawel Jakub Dawidek if (cp1 == cp2) 230080361d6SPawel Jakub Dawidek return (error); 231080361d6SPawel Jakub Dawidek g_access(cp2, -dr, -dw, -de); 232080361d6SPawel Jakub Dawidek } 233080361d6SPawel Jakub Dawidek /* NOTREACHED */ 234080361d6SPawel Jakub Dawidek } 235080361d6SPawel Jakub Dawidek 236080361d6SPawel Jakub Dawidek return (error); 237080361d6SPawel Jakub Dawidek } 238080361d6SPawel Jakub Dawidek 239080361d6SPawel Jakub Dawidek static void 240080361d6SPawel Jakub Dawidek g_shsec_xor1(uint32_t *src, uint32_t *dst, ssize_t len) 241080361d6SPawel Jakub Dawidek { 242080361d6SPawel Jakub Dawidek 243080361d6SPawel Jakub Dawidek for (; len > 0; len -= sizeof(uint32_t), dst++) 244080361d6SPawel Jakub Dawidek *dst = *dst ^ *src++; 245080361d6SPawel Jakub Dawidek KASSERT(len == 0, ("len != 0 (len=%zd)", len)); 246080361d6SPawel Jakub Dawidek } 247080361d6SPawel Jakub Dawidek 248080361d6SPawel Jakub Dawidek static void 249080361d6SPawel Jakub Dawidek g_shsec_done(struct bio *bp) 250080361d6SPawel Jakub Dawidek { 251080361d6SPawel Jakub Dawidek struct g_shsec_softc *sc; 252080361d6SPawel Jakub Dawidek struct bio *pbp; 253080361d6SPawel Jakub Dawidek 254080361d6SPawel Jakub Dawidek pbp = bp->bio_parent; 255080361d6SPawel Jakub Dawidek sc = pbp->bio_to->geom->softc; 256080361d6SPawel Jakub Dawidek if (bp->bio_error == 0) 257080361d6SPawel Jakub Dawidek G_SHSEC_LOGREQ(2, bp, "Request done."); 258080361d6SPawel Jakub Dawidek else { 259080361d6SPawel Jakub Dawidek G_SHSEC_LOGREQ(0, bp, "Request failed (error=%d).", 260080361d6SPawel Jakub Dawidek bp->bio_error); 261080361d6SPawel Jakub Dawidek if (pbp->bio_error == 0) 262080361d6SPawel Jakub Dawidek pbp->bio_error = bp->bio_error; 263080361d6SPawel Jakub Dawidek } 264080361d6SPawel Jakub Dawidek if (pbp->bio_cmd == BIO_READ) { 265080361d6SPawel Jakub Dawidek if ((pbp->bio_pflags & G_SHSEC_BFLAG_FIRST) != 0) { 266080361d6SPawel Jakub Dawidek bcopy(bp->bio_data, pbp->bio_data, pbp->bio_length); 267080361d6SPawel Jakub Dawidek pbp->bio_pflags = 0; 268080361d6SPawel Jakub Dawidek } else { 269080361d6SPawel Jakub Dawidek g_shsec_xor1((uint32_t *)bp->bio_data, 270080361d6SPawel Jakub Dawidek (uint32_t *)pbp->bio_data, 271080361d6SPawel Jakub Dawidek (ssize_t)pbp->bio_length); 272080361d6SPawel Jakub Dawidek } 273080361d6SPawel Jakub Dawidek } 274080361d6SPawel Jakub Dawidek bzero(bp->bio_data, bp->bio_length); 275080361d6SPawel Jakub Dawidek uma_zfree(g_shsec_zone, bp->bio_data); 276080361d6SPawel Jakub Dawidek g_destroy_bio(bp); 277080361d6SPawel Jakub Dawidek pbp->bio_inbed++; 278080361d6SPawel Jakub Dawidek if (pbp->bio_children == pbp->bio_inbed) { 279080361d6SPawel Jakub Dawidek pbp->bio_completed = pbp->bio_length; 280080361d6SPawel Jakub Dawidek g_io_deliver(pbp, pbp->bio_error); 281080361d6SPawel Jakub Dawidek } 282080361d6SPawel Jakub Dawidek } 283080361d6SPawel Jakub Dawidek 284080361d6SPawel Jakub Dawidek static void 285080361d6SPawel Jakub Dawidek g_shsec_xor2(uint32_t *rand, uint32_t *dst, ssize_t len) 286080361d6SPawel Jakub Dawidek { 287080361d6SPawel Jakub Dawidek 288080361d6SPawel Jakub Dawidek for (; len > 0; len -= sizeof(uint32_t), dst++) { 289080361d6SPawel Jakub Dawidek *rand = arc4random(); 290080361d6SPawel Jakub Dawidek *dst = *dst ^ *rand++; 291080361d6SPawel Jakub Dawidek } 292080361d6SPawel Jakub Dawidek KASSERT(len == 0, ("len != 0 (len=%zd)", len)); 293080361d6SPawel Jakub Dawidek } 294080361d6SPawel Jakub Dawidek 295080361d6SPawel Jakub Dawidek static void 296080361d6SPawel Jakub Dawidek g_shsec_start(struct bio *bp) 297080361d6SPawel Jakub Dawidek { 298080361d6SPawel Jakub Dawidek TAILQ_HEAD(, bio) queue = TAILQ_HEAD_INITIALIZER(queue); 299080361d6SPawel Jakub Dawidek struct g_shsec_softc *sc; 300080361d6SPawel Jakub Dawidek struct bio *cbp; 301080361d6SPawel Jakub Dawidek uint32_t *dst; 302080361d6SPawel Jakub Dawidek ssize_t len; 303080361d6SPawel Jakub Dawidek u_int no; 304080361d6SPawel Jakub Dawidek int error; 305080361d6SPawel Jakub Dawidek 306080361d6SPawel Jakub Dawidek sc = bp->bio_to->geom->softc; 307080361d6SPawel Jakub Dawidek /* 308080361d6SPawel Jakub Dawidek * If sc == NULL, provider's error should be set and g_shsec_start() 309080361d6SPawel Jakub Dawidek * should not be called at all. 310080361d6SPawel Jakub Dawidek */ 311080361d6SPawel Jakub Dawidek KASSERT(sc != NULL, 312080361d6SPawel Jakub Dawidek ("Provider's error should be set (error=%d)(device=%s).", 313080361d6SPawel Jakub Dawidek bp->bio_to->error, bp->bio_to->name)); 314080361d6SPawel Jakub Dawidek 315080361d6SPawel Jakub Dawidek G_SHSEC_LOGREQ(2, bp, "Request received."); 316080361d6SPawel Jakub Dawidek 317080361d6SPawel Jakub Dawidek switch (bp->bio_cmd) { 318080361d6SPawel Jakub Dawidek case BIO_READ: 319080361d6SPawel Jakub Dawidek case BIO_WRITE: 320118c814eSPawel Jakub Dawidek case BIO_FLUSH: 321080361d6SPawel Jakub Dawidek /* 322080361d6SPawel Jakub Dawidek * Only those requests are supported. 323080361d6SPawel Jakub Dawidek */ 324080361d6SPawel Jakub Dawidek break; 325080361d6SPawel Jakub Dawidek case BIO_DELETE: 326080361d6SPawel Jakub Dawidek case BIO_GETATTR: 327080361d6SPawel Jakub Dawidek /* To which provider it should be delivered? */ 328080361d6SPawel Jakub Dawidek default: 329080361d6SPawel Jakub Dawidek g_io_deliver(bp, EOPNOTSUPP); 330080361d6SPawel Jakub Dawidek return; 331080361d6SPawel Jakub Dawidek } 332080361d6SPawel Jakub Dawidek 333080361d6SPawel Jakub Dawidek /* 334080361d6SPawel Jakub Dawidek * Allocate all bios first and calculate XOR. 335080361d6SPawel Jakub Dawidek */ 336080361d6SPawel Jakub Dawidek dst = NULL; 337080361d6SPawel Jakub Dawidek len = bp->bio_length; 338080361d6SPawel Jakub Dawidek if (bp->bio_cmd == BIO_READ) 339080361d6SPawel Jakub Dawidek bp->bio_pflags = G_SHSEC_BFLAG_FIRST; 340080361d6SPawel Jakub Dawidek for (no = 0; no < sc->sc_ndisks; no++) { 341080361d6SPawel Jakub Dawidek cbp = g_clone_bio(bp); 342080361d6SPawel Jakub Dawidek if (cbp == NULL) { 343080361d6SPawel Jakub Dawidek error = ENOMEM; 344080361d6SPawel Jakub Dawidek goto failure; 345080361d6SPawel Jakub Dawidek } 346080361d6SPawel Jakub Dawidek TAILQ_INSERT_TAIL(&queue, cbp, bio_queue); 347080361d6SPawel Jakub Dawidek 348080361d6SPawel Jakub Dawidek /* 349080361d6SPawel Jakub Dawidek * Fill in the component buf structure. 350080361d6SPawel Jakub Dawidek */ 351080361d6SPawel Jakub Dawidek cbp->bio_done = g_shsec_done; 352080361d6SPawel Jakub Dawidek cbp->bio_data = uma_zalloc(g_shsec_zone, M_NOWAIT); 353080361d6SPawel Jakub Dawidek if (cbp->bio_data == NULL) { 354080361d6SPawel Jakub Dawidek g_shsec_alloc_failed++; 355080361d6SPawel Jakub Dawidek error = ENOMEM; 356080361d6SPawel Jakub Dawidek goto failure; 357080361d6SPawel Jakub Dawidek } 358080361d6SPawel Jakub Dawidek cbp->bio_caller2 = sc->sc_disks[no]; 359080361d6SPawel Jakub Dawidek if (bp->bio_cmd == BIO_WRITE) { 360080361d6SPawel Jakub Dawidek if (no == 0) { 361080361d6SPawel Jakub Dawidek dst = (uint32_t *)cbp->bio_data; 362080361d6SPawel Jakub Dawidek bcopy(bp->bio_data, dst, len); 363080361d6SPawel Jakub Dawidek } else { 364080361d6SPawel Jakub Dawidek g_shsec_xor2((uint32_t *)cbp->bio_data, dst, 365080361d6SPawel Jakub Dawidek len); 366080361d6SPawel Jakub Dawidek } 367080361d6SPawel Jakub Dawidek } 368080361d6SPawel Jakub Dawidek } 369080361d6SPawel Jakub Dawidek /* 370080361d6SPawel Jakub Dawidek * Fire off all allocated requests! 371080361d6SPawel Jakub Dawidek */ 372080361d6SPawel Jakub Dawidek while ((cbp = TAILQ_FIRST(&queue)) != NULL) { 373080361d6SPawel Jakub Dawidek struct g_consumer *cp; 374080361d6SPawel Jakub Dawidek 375080361d6SPawel Jakub Dawidek TAILQ_REMOVE(&queue, cbp, bio_queue); 376080361d6SPawel Jakub Dawidek cp = cbp->bio_caller2; 377080361d6SPawel Jakub Dawidek cbp->bio_caller2 = NULL; 378080361d6SPawel Jakub Dawidek cbp->bio_to = cp->provider; 379080361d6SPawel Jakub Dawidek G_SHSEC_LOGREQ(2, cbp, "Sending request."); 380080361d6SPawel Jakub Dawidek g_io_request(cbp, cp); 381080361d6SPawel Jakub Dawidek } 382080361d6SPawel Jakub Dawidek return; 383080361d6SPawel Jakub Dawidek failure: 384080361d6SPawel Jakub Dawidek while ((cbp = TAILQ_FIRST(&queue)) != NULL) { 385080361d6SPawel Jakub Dawidek TAILQ_REMOVE(&queue, cbp, bio_queue); 386080361d6SPawel Jakub Dawidek bp->bio_children--; 387080361d6SPawel Jakub Dawidek if (cbp->bio_data != NULL) { 388080361d6SPawel Jakub Dawidek bzero(cbp->bio_data, cbp->bio_length); 389080361d6SPawel Jakub Dawidek uma_zfree(g_shsec_zone, cbp->bio_data); 390080361d6SPawel Jakub Dawidek } 391080361d6SPawel Jakub Dawidek g_destroy_bio(cbp); 392080361d6SPawel Jakub Dawidek } 393080361d6SPawel Jakub Dawidek if (bp->bio_error == 0) 394080361d6SPawel Jakub Dawidek bp->bio_error = error; 395080361d6SPawel Jakub Dawidek g_io_deliver(bp, bp->bio_error); 396080361d6SPawel Jakub Dawidek } 397080361d6SPawel Jakub Dawidek 398080361d6SPawel Jakub Dawidek static void 399080361d6SPawel Jakub Dawidek g_shsec_check_and_run(struct g_shsec_softc *sc) 400080361d6SPawel Jakub Dawidek { 401080361d6SPawel Jakub Dawidek off_t mediasize, ms; 402080361d6SPawel Jakub Dawidek u_int no, sectorsize = 0; 403080361d6SPawel Jakub Dawidek 404080361d6SPawel Jakub Dawidek if (g_shsec_nvalid(sc) != sc->sc_ndisks) 405080361d6SPawel Jakub Dawidek return; 406080361d6SPawel Jakub Dawidek 407080361d6SPawel Jakub Dawidek sc->sc_provider = g_new_providerf(sc->sc_geom, "shsec/%s", sc->sc_name); 408080361d6SPawel Jakub Dawidek /* 409080361d6SPawel Jakub Dawidek * Find the smallest disk. 410080361d6SPawel Jakub Dawidek */ 411080361d6SPawel Jakub Dawidek mediasize = sc->sc_disks[0]->provider->mediasize; 412080361d6SPawel Jakub Dawidek mediasize -= sc->sc_disks[0]->provider->sectorsize; 413080361d6SPawel Jakub Dawidek sectorsize = sc->sc_disks[0]->provider->sectorsize; 414080361d6SPawel Jakub Dawidek for (no = 1; no < sc->sc_ndisks; no++) { 415080361d6SPawel Jakub Dawidek ms = sc->sc_disks[no]->provider->mediasize; 416080361d6SPawel Jakub Dawidek ms -= sc->sc_disks[no]->provider->sectorsize; 417080361d6SPawel Jakub Dawidek if (ms < mediasize) 418080361d6SPawel Jakub Dawidek mediasize = ms; 419080361d6SPawel Jakub Dawidek sectorsize = lcm(sectorsize, 420080361d6SPawel Jakub Dawidek sc->sc_disks[no]->provider->sectorsize); 421080361d6SPawel Jakub Dawidek } 422080361d6SPawel Jakub Dawidek sc->sc_provider->sectorsize = sectorsize; 423080361d6SPawel Jakub Dawidek sc->sc_provider->mediasize = mediasize; 424080361d6SPawel Jakub Dawidek g_error_provider(sc->sc_provider, 0); 425080361d6SPawel Jakub Dawidek 426080361d6SPawel Jakub Dawidek G_SHSEC_DEBUG(0, "Device %s activated.", sc->sc_name); 427080361d6SPawel Jakub Dawidek } 428080361d6SPawel Jakub Dawidek 429080361d6SPawel Jakub Dawidek static int 430080361d6SPawel Jakub Dawidek g_shsec_read_metadata(struct g_consumer *cp, struct g_shsec_metadata *md) 431080361d6SPawel Jakub Dawidek { 432080361d6SPawel Jakub Dawidek struct g_provider *pp; 433080361d6SPawel Jakub Dawidek u_char *buf; 434080361d6SPawel Jakub Dawidek int error; 435080361d6SPawel Jakub Dawidek 436080361d6SPawel Jakub Dawidek g_topology_assert(); 437080361d6SPawel Jakub Dawidek 438080361d6SPawel Jakub Dawidek error = g_access(cp, 1, 0, 0); 439080361d6SPawel Jakub Dawidek if (error != 0) 440080361d6SPawel Jakub Dawidek return (error); 441080361d6SPawel Jakub Dawidek pp = cp->provider; 442080361d6SPawel Jakub Dawidek g_topology_unlock(); 443080361d6SPawel Jakub Dawidek buf = g_read_data(cp, pp->mediasize - pp->sectorsize, pp->sectorsize, 444080361d6SPawel Jakub Dawidek &error); 445080361d6SPawel Jakub Dawidek g_topology_lock(); 446080361d6SPawel Jakub Dawidek g_access(cp, -1, 0, 0); 447080361d6SPawel Jakub Dawidek if (buf == NULL) 448080361d6SPawel Jakub Dawidek return (error); 449080361d6SPawel Jakub Dawidek 450080361d6SPawel Jakub Dawidek /* Decode metadata. */ 451080361d6SPawel Jakub Dawidek shsec_metadata_decode(buf, md); 452080361d6SPawel Jakub Dawidek g_free(buf); 453080361d6SPawel Jakub Dawidek 454080361d6SPawel Jakub Dawidek return (0); 455080361d6SPawel Jakub Dawidek } 456080361d6SPawel Jakub Dawidek 457080361d6SPawel Jakub Dawidek /* 458080361d6SPawel Jakub Dawidek * Add disk to given device. 459080361d6SPawel Jakub Dawidek */ 460080361d6SPawel Jakub Dawidek static int 461080361d6SPawel Jakub Dawidek g_shsec_add_disk(struct g_shsec_softc *sc, struct g_provider *pp, u_int no) 462080361d6SPawel Jakub Dawidek { 463080361d6SPawel Jakub Dawidek struct g_consumer *cp, *fcp; 464080361d6SPawel Jakub Dawidek struct g_geom *gp; 465080361d6SPawel Jakub Dawidek struct g_shsec_metadata md; 466080361d6SPawel Jakub Dawidek int error; 467080361d6SPawel Jakub Dawidek 468080361d6SPawel Jakub Dawidek /* Metadata corrupted? */ 469080361d6SPawel Jakub Dawidek if (no >= sc->sc_ndisks) 470080361d6SPawel Jakub Dawidek return (EINVAL); 471080361d6SPawel Jakub Dawidek 472080361d6SPawel Jakub Dawidek /* Check if disk is not already attached. */ 473080361d6SPawel Jakub Dawidek if (sc->sc_disks[no] != NULL) 474080361d6SPawel Jakub Dawidek return (EEXIST); 475080361d6SPawel Jakub Dawidek 476080361d6SPawel Jakub Dawidek gp = sc->sc_geom; 477080361d6SPawel Jakub Dawidek fcp = LIST_FIRST(&gp->consumer); 478080361d6SPawel Jakub Dawidek 479080361d6SPawel Jakub Dawidek cp = g_new_consumer(gp); 480080361d6SPawel Jakub Dawidek error = g_attach(cp, pp); 481080361d6SPawel Jakub Dawidek if (error != 0) { 482080361d6SPawel Jakub Dawidek g_destroy_consumer(cp); 483080361d6SPawel Jakub Dawidek return (error); 484080361d6SPawel Jakub Dawidek } 485080361d6SPawel Jakub Dawidek 486080361d6SPawel Jakub Dawidek if (fcp != NULL && (fcp->acr > 0 || fcp->acw > 0 || fcp->ace > 0)) { 487080361d6SPawel Jakub Dawidek error = g_access(cp, fcp->acr, fcp->acw, fcp->ace); 488080361d6SPawel Jakub Dawidek if (error != 0) { 489080361d6SPawel Jakub Dawidek g_detach(cp); 490080361d6SPawel Jakub Dawidek g_destroy_consumer(cp); 491080361d6SPawel Jakub Dawidek return (error); 492080361d6SPawel Jakub Dawidek } 493080361d6SPawel Jakub Dawidek } 494080361d6SPawel Jakub Dawidek 495080361d6SPawel Jakub Dawidek /* Reread metadata. */ 496080361d6SPawel Jakub Dawidek error = g_shsec_read_metadata(cp, &md); 497080361d6SPawel Jakub Dawidek if (error != 0) 498080361d6SPawel Jakub Dawidek goto fail; 499080361d6SPawel Jakub Dawidek 500080361d6SPawel Jakub Dawidek if (strcmp(md.md_magic, G_SHSEC_MAGIC) != 0 || 501080361d6SPawel Jakub Dawidek strcmp(md.md_name, sc->sc_name) != 0 || md.md_id != sc->sc_id) { 502080361d6SPawel Jakub Dawidek G_SHSEC_DEBUG(0, "Metadata on %s changed.", pp->name); 503080361d6SPawel Jakub Dawidek goto fail; 504080361d6SPawel Jakub Dawidek } 505080361d6SPawel Jakub Dawidek 506080361d6SPawel Jakub Dawidek cp->private = sc; 507080361d6SPawel Jakub Dawidek cp->index = no; 508080361d6SPawel Jakub Dawidek sc->sc_disks[no] = cp; 509080361d6SPawel Jakub Dawidek 510080361d6SPawel Jakub Dawidek G_SHSEC_DEBUG(0, "Disk %s attached to %s.", pp->name, sc->sc_name); 511080361d6SPawel Jakub Dawidek 512080361d6SPawel Jakub Dawidek g_shsec_check_and_run(sc); 513080361d6SPawel Jakub Dawidek 514080361d6SPawel Jakub Dawidek return (0); 515080361d6SPawel Jakub Dawidek fail: 516080361d6SPawel Jakub Dawidek if (fcp != NULL && (fcp->acr > 0 || fcp->acw > 0 || fcp->ace > 0)) 517080361d6SPawel Jakub Dawidek g_access(cp, -fcp->acr, -fcp->acw, -fcp->ace); 518080361d6SPawel Jakub Dawidek g_detach(cp); 519080361d6SPawel Jakub Dawidek g_destroy_consumer(cp); 520080361d6SPawel Jakub Dawidek return (error); 521080361d6SPawel Jakub Dawidek } 522080361d6SPawel Jakub Dawidek 523080361d6SPawel Jakub Dawidek static struct g_geom * 524080361d6SPawel Jakub Dawidek g_shsec_create(struct g_class *mp, const struct g_shsec_metadata *md) 525080361d6SPawel Jakub Dawidek { 526080361d6SPawel Jakub Dawidek struct g_shsec_softc *sc; 527080361d6SPawel Jakub Dawidek struct g_geom *gp; 528080361d6SPawel Jakub Dawidek u_int no; 529080361d6SPawel Jakub Dawidek 530080361d6SPawel Jakub Dawidek G_SHSEC_DEBUG(1, "Creating device %s (id=%u).", md->md_name, md->md_id); 531080361d6SPawel Jakub Dawidek 532080361d6SPawel Jakub Dawidek /* Two disks is minimum. */ 533080361d6SPawel Jakub Dawidek if (md->md_all < 2) { 534080361d6SPawel Jakub Dawidek G_SHSEC_DEBUG(0, "Too few disks defined for %s.", md->md_name); 535080361d6SPawel Jakub Dawidek return (NULL); 536080361d6SPawel Jakub Dawidek } 537080361d6SPawel Jakub Dawidek 538080361d6SPawel Jakub Dawidek /* Check for duplicate unit */ 539080361d6SPawel Jakub Dawidek LIST_FOREACH(gp, &mp->geom, geom) { 540080361d6SPawel Jakub Dawidek sc = gp->softc; 541080361d6SPawel Jakub Dawidek if (sc != NULL && strcmp(sc->sc_name, md->md_name) == 0) { 542080361d6SPawel Jakub Dawidek G_SHSEC_DEBUG(0, "Device %s already configured.", 543080361d6SPawel Jakub Dawidek sc->sc_name); 544080361d6SPawel Jakub Dawidek return (NULL); 545080361d6SPawel Jakub Dawidek } 546080361d6SPawel Jakub Dawidek } 547080361d6SPawel Jakub Dawidek gp = g_new_geomf(mp, "%s", md->md_name); 548080361d6SPawel Jakub Dawidek gp->softc = NULL; /* for a moment */ 549080361d6SPawel Jakub Dawidek 550080361d6SPawel Jakub Dawidek sc = malloc(sizeof(*sc), M_SHSEC, M_WAITOK | M_ZERO); 551080361d6SPawel Jakub Dawidek gp->start = g_shsec_start; 552080361d6SPawel Jakub Dawidek gp->spoiled = g_shsec_orphan; 553080361d6SPawel Jakub Dawidek gp->orphan = g_shsec_orphan; 554080361d6SPawel Jakub Dawidek gp->access = g_shsec_access; 555080361d6SPawel Jakub Dawidek gp->dumpconf = g_shsec_dumpconf; 556080361d6SPawel Jakub Dawidek 557080361d6SPawel Jakub Dawidek sc->sc_id = md->md_id; 558080361d6SPawel Jakub Dawidek sc->sc_ndisks = md->md_all; 559080361d6SPawel Jakub Dawidek sc->sc_disks = malloc(sizeof(struct g_consumer *) * sc->sc_ndisks, 560080361d6SPawel Jakub Dawidek M_SHSEC, M_WAITOK | M_ZERO); 561080361d6SPawel Jakub Dawidek for (no = 0; no < sc->sc_ndisks; no++) 562080361d6SPawel Jakub Dawidek sc->sc_disks[no] = NULL; 563080361d6SPawel Jakub Dawidek 564080361d6SPawel Jakub Dawidek gp->softc = sc; 565080361d6SPawel Jakub Dawidek sc->sc_geom = gp; 566080361d6SPawel Jakub Dawidek sc->sc_provider = NULL; 567080361d6SPawel Jakub Dawidek 568080361d6SPawel Jakub Dawidek G_SHSEC_DEBUG(0, "Device %s created (id=%u).", sc->sc_name, sc->sc_id); 569080361d6SPawel Jakub Dawidek 570080361d6SPawel Jakub Dawidek return (gp); 571080361d6SPawel Jakub Dawidek } 572080361d6SPawel Jakub Dawidek 573080361d6SPawel Jakub Dawidek static int 574080361d6SPawel Jakub Dawidek g_shsec_destroy(struct g_shsec_softc *sc, boolean_t force) 575080361d6SPawel Jakub Dawidek { 576080361d6SPawel Jakub Dawidek struct g_provider *pp; 577080361d6SPawel Jakub Dawidek struct g_geom *gp; 578080361d6SPawel Jakub Dawidek u_int no; 579080361d6SPawel Jakub Dawidek 580080361d6SPawel Jakub Dawidek g_topology_assert(); 581080361d6SPawel Jakub Dawidek 582080361d6SPawel Jakub Dawidek if (sc == NULL) 583080361d6SPawel Jakub Dawidek return (ENXIO); 584080361d6SPawel Jakub Dawidek 585080361d6SPawel Jakub Dawidek pp = sc->sc_provider; 586080361d6SPawel Jakub Dawidek if (pp != NULL && (pp->acr != 0 || pp->acw != 0 || pp->ace != 0)) { 587080361d6SPawel Jakub Dawidek if (force) { 588080361d6SPawel Jakub Dawidek G_SHSEC_DEBUG(0, "Device %s is still open, so it " 589080361d6SPawel Jakub Dawidek "can't be definitely removed.", pp->name); 590080361d6SPawel Jakub Dawidek } else { 591080361d6SPawel Jakub Dawidek G_SHSEC_DEBUG(1, 592080361d6SPawel Jakub Dawidek "Device %s is still open (r%dw%de%d).", pp->name, 593080361d6SPawel Jakub Dawidek pp->acr, pp->acw, pp->ace); 594080361d6SPawel Jakub Dawidek return (EBUSY); 595080361d6SPawel Jakub Dawidek } 596080361d6SPawel Jakub Dawidek } 597080361d6SPawel Jakub Dawidek 598080361d6SPawel Jakub Dawidek for (no = 0; no < sc->sc_ndisks; no++) { 599080361d6SPawel Jakub Dawidek if (sc->sc_disks[no] != NULL) 600080361d6SPawel Jakub Dawidek g_shsec_remove_disk(sc->sc_disks[no]); 601080361d6SPawel Jakub Dawidek } 602080361d6SPawel Jakub Dawidek 603080361d6SPawel Jakub Dawidek gp = sc->sc_geom; 604080361d6SPawel Jakub Dawidek gp->softc = NULL; 605080361d6SPawel Jakub Dawidek KASSERT(sc->sc_provider == NULL, ("Provider still exists? (device=%s)", 606080361d6SPawel Jakub Dawidek gp->name)); 607080361d6SPawel Jakub Dawidek free(sc->sc_disks, M_SHSEC); 608080361d6SPawel Jakub Dawidek free(sc, M_SHSEC); 609080361d6SPawel Jakub Dawidek 610080361d6SPawel Jakub Dawidek pp = LIST_FIRST(&gp->provider); 611080361d6SPawel Jakub Dawidek if (pp == NULL || (pp->acr == 0 && pp->acw == 0 && pp->ace == 0)) 612080361d6SPawel Jakub Dawidek G_SHSEC_DEBUG(0, "Device %s destroyed.", gp->name); 613080361d6SPawel Jakub Dawidek 614080361d6SPawel Jakub Dawidek g_wither_geom(gp, ENXIO); 615080361d6SPawel Jakub Dawidek 616080361d6SPawel Jakub Dawidek return (0); 617080361d6SPawel Jakub Dawidek } 618080361d6SPawel Jakub Dawidek 619080361d6SPawel Jakub Dawidek static int 620080361d6SPawel Jakub Dawidek g_shsec_destroy_geom(struct gctl_req *req __unused, struct g_class *mp __unused, 621080361d6SPawel Jakub Dawidek struct g_geom *gp) 622080361d6SPawel Jakub Dawidek { 623080361d6SPawel Jakub Dawidek struct g_shsec_softc *sc; 624080361d6SPawel Jakub Dawidek 625080361d6SPawel Jakub Dawidek sc = gp->softc; 626080361d6SPawel Jakub Dawidek return (g_shsec_destroy(sc, 0)); 627080361d6SPawel Jakub Dawidek } 628080361d6SPawel Jakub Dawidek 629080361d6SPawel Jakub Dawidek static struct g_geom * 630080361d6SPawel Jakub Dawidek g_shsec_taste(struct g_class *mp, struct g_provider *pp, int flags __unused) 631080361d6SPawel Jakub Dawidek { 632080361d6SPawel Jakub Dawidek struct g_shsec_metadata md; 633080361d6SPawel Jakub Dawidek struct g_shsec_softc *sc; 634080361d6SPawel Jakub Dawidek struct g_consumer *cp; 635080361d6SPawel Jakub Dawidek struct g_geom *gp; 636080361d6SPawel Jakub Dawidek int error; 637080361d6SPawel Jakub Dawidek 638080361d6SPawel Jakub Dawidek g_trace(G_T_TOPOLOGY, "%s(%s, %s)", __func__, mp->name, pp->name); 639080361d6SPawel Jakub Dawidek g_topology_assert(); 640080361d6SPawel Jakub Dawidek 641f8727e71SPawel Jakub Dawidek /* Skip providers that are already open for writing. */ 642f8727e71SPawel Jakub Dawidek if (pp->acw > 0) 643f8727e71SPawel Jakub Dawidek return (NULL); 644f8727e71SPawel Jakub Dawidek 645080361d6SPawel Jakub Dawidek G_SHSEC_DEBUG(3, "Tasting %s.", pp->name); 646080361d6SPawel Jakub Dawidek 647080361d6SPawel Jakub Dawidek gp = g_new_geomf(mp, "shsec:taste"); 648080361d6SPawel Jakub Dawidek gp->start = g_shsec_start; 649080361d6SPawel Jakub Dawidek gp->access = g_shsec_access; 650080361d6SPawel Jakub Dawidek gp->orphan = g_shsec_orphan; 651080361d6SPawel Jakub Dawidek cp = g_new_consumer(gp); 652080361d6SPawel Jakub Dawidek g_attach(cp, pp); 653080361d6SPawel Jakub Dawidek error = g_shsec_read_metadata(cp, &md); 654080361d6SPawel Jakub Dawidek g_detach(cp); 655080361d6SPawel Jakub Dawidek g_destroy_consumer(cp); 656080361d6SPawel Jakub Dawidek g_destroy_geom(gp); 657080361d6SPawel Jakub Dawidek if (error != 0) 658080361d6SPawel Jakub Dawidek return (NULL); 659080361d6SPawel Jakub Dawidek gp = NULL; 660080361d6SPawel Jakub Dawidek 661080361d6SPawel Jakub Dawidek if (strcmp(md.md_magic, G_SHSEC_MAGIC) != 0) 662080361d6SPawel Jakub Dawidek return (NULL); 663080361d6SPawel Jakub Dawidek if (md.md_version > G_SHSEC_VERSION) { 664080361d6SPawel Jakub Dawidek G_SHSEC_DEBUG(0, "Kernel module is too old to handle %s.\n", 665080361d6SPawel Jakub Dawidek pp->name); 666080361d6SPawel Jakub Dawidek return (NULL); 667080361d6SPawel Jakub Dawidek } 668e6890985SPawel Jakub Dawidek /* 669e6890985SPawel Jakub Dawidek * Backward compatibility: 670e6890985SPawel Jakub Dawidek */ 671e6890985SPawel Jakub Dawidek /* There was no md_provsize field in earlier versions of metadata. */ 672e6890985SPawel Jakub Dawidek if (md.md_version < 1) 673e6890985SPawel Jakub Dawidek md.md_provsize = pp->mediasize; 674e6890985SPawel Jakub Dawidek 675080361d6SPawel Jakub Dawidek if (md.md_provider[0] != '\0' && strcmp(md.md_provider, pp->name) != 0) 676080361d6SPawel Jakub Dawidek return (NULL); 677e6890985SPawel Jakub Dawidek if (md.md_provsize != pp->mediasize) 678e6890985SPawel Jakub Dawidek return (NULL); 679080361d6SPawel Jakub Dawidek 680080361d6SPawel Jakub Dawidek /* 681080361d6SPawel Jakub Dawidek * Let's check if device already exists. 682080361d6SPawel Jakub Dawidek */ 683080361d6SPawel Jakub Dawidek sc = NULL; 684080361d6SPawel Jakub Dawidek LIST_FOREACH(gp, &mp->geom, geom) { 685080361d6SPawel Jakub Dawidek sc = gp->softc; 686080361d6SPawel Jakub Dawidek if (sc == NULL) 687080361d6SPawel Jakub Dawidek continue; 688080361d6SPawel Jakub Dawidek if (strcmp(md.md_name, sc->sc_name) != 0) 689080361d6SPawel Jakub Dawidek continue; 690080361d6SPawel Jakub Dawidek if (md.md_id != sc->sc_id) 691080361d6SPawel Jakub Dawidek continue; 692080361d6SPawel Jakub Dawidek break; 693080361d6SPawel Jakub Dawidek } 694080361d6SPawel Jakub Dawidek if (gp != NULL) { 695080361d6SPawel Jakub Dawidek G_SHSEC_DEBUG(1, "Adding disk %s to %s.", pp->name, gp->name); 696080361d6SPawel Jakub Dawidek error = g_shsec_add_disk(sc, pp, md.md_no); 697080361d6SPawel Jakub Dawidek if (error != 0) { 698080361d6SPawel Jakub Dawidek G_SHSEC_DEBUG(0, "Cannot add disk %s to %s (error=%d).", 699080361d6SPawel Jakub Dawidek pp->name, gp->name, error); 700080361d6SPawel Jakub Dawidek return (NULL); 701080361d6SPawel Jakub Dawidek } 702080361d6SPawel Jakub Dawidek } else { 703080361d6SPawel Jakub Dawidek gp = g_shsec_create(mp, &md); 704080361d6SPawel Jakub Dawidek if (gp == NULL) { 705080361d6SPawel Jakub Dawidek G_SHSEC_DEBUG(0, "Cannot create device %s.", md.md_name); 706080361d6SPawel Jakub Dawidek return (NULL); 707080361d6SPawel Jakub Dawidek } 708080361d6SPawel Jakub Dawidek sc = gp->softc; 709080361d6SPawel Jakub Dawidek G_SHSEC_DEBUG(1, "Adding disk %s to %s.", pp->name, gp->name); 710080361d6SPawel Jakub Dawidek error = g_shsec_add_disk(sc, pp, md.md_no); 711080361d6SPawel Jakub Dawidek if (error != 0) { 712080361d6SPawel Jakub Dawidek G_SHSEC_DEBUG(0, "Cannot add disk %s to %s (error=%d).", 713080361d6SPawel Jakub Dawidek pp->name, gp->name, error); 714080361d6SPawel Jakub Dawidek g_shsec_destroy(sc, 1); 715080361d6SPawel Jakub Dawidek return (NULL); 716080361d6SPawel Jakub Dawidek } 717080361d6SPawel Jakub Dawidek } 718080361d6SPawel Jakub Dawidek return (gp); 719080361d6SPawel Jakub Dawidek } 720080361d6SPawel Jakub Dawidek 721080361d6SPawel Jakub Dawidek static struct g_shsec_softc * 722080361d6SPawel Jakub Dawidek g_shsec_find_device(struct g_class *mp, const char *name) 723080361d6SPawel Jakub Dawidek { 724080361d6SPawel Jakub Dawidek struct g_shsec_softc *sc; 725080361d6SPawel Jakub Dawidek struct g_geom *gp; 726080361d6SPawel Jakub Dawidek 727080361d6SPawel Jakub Dawidek LIST_FOREACH(gp, &mp->geom, geom) { 728080361d6SPawel Jakub Dawidek sc = gp->softc; 729080361d6SPawel Jakub Dawidek if (sc == NULL) 730080361d6SPawel Jakub Dawidek continue; 731080361d6SPawel Jakub Dawidek if (strcmp(sc->sc_name, name) == 0) 732080361d6SPawel Jakub Dawidek return (sc); 733080361d6SPawel Jakub Dawidek } 734080361d6SPawel Jakub Dawidek return (NULL); 735080361d6SPawel Jakub Dawidek } 736080361d6SPawel Jakub Dawidek 737080361d6SPawel Jakub Dawidek static void 738080361d6SPawel Jakub Dawidek g_shsec_ctl_destroy(struct gctl_req *req, struct g_class *mp) 739080361d6SPawel Jakub Dawidek { 740080361d6SPawel Jakub Dawidek struct g_shsec_softc *sc; 741080361d6SPawel Jakub Dawidek int *force, *nargs, error; 742080361d6SPawel Jakub Dawidek const char *name; 743080361d6SPawel Jakub Dawidek char param[16]; 744080361d6SPawel Jakub Dawidek u_int i; 745080361d6SPawel Jakub Dawidek 746080361d6SPawel Jakub Dawidek g_topology_assert(); 747080361d6SPawel Jakub Dawidek 748080361d6SPawel Jakub Dawidek nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 749080361d6SPawel Jakub Dawidek if (nargs == NULL) { 750080361d6SPawel Jakub Dawidek gctl_error(req, "No '%s' argument.", "nargs"); 751080361d6SPawel Jakub Dawidek return; 752080361d6SPawel Jakub Dawidek } 753080361d6SPawel Jakub Dawidek if (*nargs <= 0) { 754080361d6SPawel Jakub Dawidek gctl_error(req, "Missing device(s)."); 755080361d6SPawel Jakub Dawidek return; 756080361d6SPawel Jakub Dawidek } 757080361d6SPawel Jakub Dawidek force = gctl_get_paraml(req, "force", sizeof(*force)); 758080361d6SPawel Jakub Dawidek if (force == NULL) { 759080361d6SPawel Jakub Dawidek gctl_error(req, "No '%s' argument.", "force"); 760080361d6SPawel Jakub Dawidek return; 761080361d6SPawel Jakub Dawidek } 762080361d6SPawel Jakub Dawidek 763080361d6SPawel Jakub Dawidek for (i = 0; i < (u_int)*nargs; i++) { 764080361d6SPawel Jakub Dawidek snprintf(param, sizeof(param), "arg%u", i); 765080361d6SPawel Jakub Dawidek name = gctl_get_asciiparam(req, param); 766080361d6SPawel Jakub Dawidek if (name == NULL) { 767080361d6SPawel Jakub Dawidek gctl_error(req, "No 'arg%u' argument.", i); 768080361d6SPawel Jakub Dawidek return; 769080361d6SPawel Jakub Dawidek } 770080361d6SPawel Jakub Dawidek sc = g_shsec_find_device(mp, name); 771080361d6SPawel Jakub Dawidek if (sc == NULL) { 772080361d6SPawel Jakub Dawidek gctl_error(req, "No such device: %s.", name); 773080361d6SPawel Jakub Dawidek return; 774080361d6SPawel Jakub Dawidek } 775080361d6SPawel Jakub Dawidek error = g_shsec_destroy(sc, *force); 776080361d6SPawel Jakub Dawidek if (error != 0) { 777080361d6SPawel Jakub Dawidek gctl_error(req, "Cannot destroy device %s (error=%d).", 778080361d6SPawel Jakub Dawidek sc->sc_name, error); 779080361d6SPawel Jakub Dawidek return; 780080361d6SPawel Jakub Dawidek } 781080361d6SPawel Jakub Dawidek } 782080361d6SPawel Jakub Dawidek } 783080361d6SPawel Jakub Dawidek 784080361d6SPawel Jakub Dawidek static void 785080361d6SPawel Jakub Dawidek g_shsec_config(struct gctl_req *req, struct g_class *mp, const char *verb) 786080361d6SPawel Jakub Dawidek { 787080361d6SPawel Jakub Dawidek uint32_t *version; 788080361d6SPawel Jakub Dawidek 789080361d6SPawel Jakub Dawidek g_topology_assert(); 790080361d6SPawel Jakub Dawidek 791080361d6SPawel Jakub Dawidek version = gctl_get_paraml(req, "version", sizeof(*version)); 792080361d6SPawel Jakub Dawidek if (version == NULL) { 793080361d6SPawel Jakub Dawidek gctl_error(req, "No '%s' argument.", "version"); 794080361d6SPawel Jakub Dawidek return; 795080361d6SPawel Jakub Dawidek } 796080361d6SPawel Jakub Dawidek if (*version != G_SHSEC_VERSION) { 797080361d6SPawel Jakub Dawidek gctl_error(req, "Userland and kernel parts are out of sync."); 798080361d6SPawel Jakub Dawidek return; 799080361d6SPawel Jakub Dawidek } 800080361d6SPawel Jakub Dawidek 801080361d6SPawel Jakub Dawidek if (strcmp(verb, "stop") == 0) { 802080361d6SPawel Jakub Dawidek g_shsec_ctl_destroy(req, mp); 803080361d6SPawel Jakub Dawidek return; 804080361d6SPawel Jakub Dawidek } 805080361d6SPawel Jakub Dawidek 806080361d6SPawel Jakub Dawidek gctl_error(req, "Unknown verb."); 807080361d6SPawel Jakub Dawidek } 808080361d6SPawel Jakub Dawidek 809080361d6SPawel Jakub Dawidek static void 810080361d6SPawel Jakub Dawidek g_shsec_dumpconf(struct sbuf *sb, const char *indent, struct g_geom *gp, 811080361d6SPawel Jakub Dawidek struct g_consumer *cp, struct g_provider *pp) 812080361d6SPawel Jakub Dawidek { 813080361d6SPawel Jakub Dawidek struct g_shsec_softc *sc; 814080361d6SPawel Jakub Dawidek 815080361d6SPawel Jakub Dawidek sc = gp->softc; 816080361d6SPawel Jakub Dawidek if (sc == NULL) 817080361d6SPawel Jakub Dawidek return; 818080361d6SPawel Jakub Dawidek if (pp != NULL) { 819080361d6SPawel Jakub Dawidek /* Nothing here. */ 820080361d6SPawel Jakub Dawidek } else if (cp != NULL) { 821080361d6SPawel Jakub Dawidek sbuf_printf(sb, "%s<Number>%u</Number>\n", indent, 822080361d6SPawel Jakub Dawidek (u_int)cp->index); 823080361d6SPawel Jakub Dawidek } else { 824080361d6SPawel Jakub Dawidek sbuf_printf(sb, "%s<ID>%u</ID>\n", indent, (u_int)sc->sc_id); 825080361d6SPawel Jakub Dawidek sbuf_printf(sb, "%s<Status>Total=%u, Online=%u</Status>\n", 826080361d6SPawel Jakub Dawidek indent, sc->sc_ndisks, g_shsec_nvalid(sc)); 827080361d6SPawel Jakub Dawidek sbuf_printf(sb, "%s<State>", indent); 828080361d6SPawel Jakub Dawidek if (sc->sc_provider != NULL && sc->sc_provider->error == 0) 829080361d6SPawel Jakub Dawidek sbuf_printf(sb, "UP"); 830080361d6SPawel Jakub Dawidek else 831080361d6SPawel Jakub Dawidek sbuf_printf(sb, "DOWN"); 832080361d6SPawel Jakub Dawidek sbuf_printf(sb, "</State>\n"); 833080361d6SPawel Jakub Dawidek } 834080361d6SPawel Jakub Dawidek } 835080361d6SPawel Jakub Dawidek 836080361d6SPawel Jakub Dawidek DECLARE_GEOM_CLASS(g_shsec_class, g_shsec); 837