7029da5c36
r357614 added CTLFLAG_NEEDGIANT to make it easier to find nodes that are still not MPSAFE (or already are but aren’t properly marked). Use it in preparation for a general review of all nodes. This is non-functional change that adds annotations to SYSCTL_NODE and SYSCTL_PROC nodes using one of the soon-to-be-required flags. Mark all obvious cases as MPSAFE. All entries that haven't been marked as MPSAFE before are by default marked as NEEDGIANT Approved by: kib (mentor, blanket) Commented by: kib, gallatin, melifaro Differential Revision: https://reviews.freebsd.org/D23718
836 lines
19 KiB
C
836 lines
19 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2005 Pawel Jakub Dawidek <pjd@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/bio.h>
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#include <sys/sbuf.h>
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#include <sys/sysctl.h>
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#include <sys/malloc.h>
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#include <vm/uma.h>
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#include <geom/geom.h>
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#include <geom/geom_dbg.h>
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#include <geom/shsec/g_shsec.h>
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FEATURE(geom_shsec, "GEOM shared secret device support");
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static MALLOC_DEFINE(M_SHSEC, "shsec_data", "GEOM_SHSEC Data");
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static uma_zone_t g_shsec_zone;
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static int g_shsec_destroy(struct g_shsec_softc *sc, boolean_t force);
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static int g_shsec_destroy_geom(struct gctl_req *req, struct g_class *mp,
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struct g_geom *gp);
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static g_taste_t g_shsec_taste;
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static g_ctl_req_t g_shsec_config;
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static g_dumpconf_t g_shsec_dumpconf;
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static g_init_t g_shsec_init;
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static g_fini_t g_shsec_fini;
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struct g_class g_shsec_class = {
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.name = G_SHSEC_CLASS_NAME,
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.version = G_VERSION,
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.ctlreq = g_shsec_config,
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.taste = g_shsec_taste,
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.destroy_geom = g_shsec_destroy_geom,
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.init = g_shsec_init,
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.fini = g_shsec_fini
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};
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SYSCTL_DECL(_kern_geom);
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static SYSCTL_NODE(_kern_geom, OID_AUTO, shsec, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
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"GEOM_SHSEC stuff");
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static u_int g_shsec_debug = 0;
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SYSCTL_UINT(_kern_geom_shsec, OID_AUTO, debug, CTLFLAG_RWTUN, &g_shsec_debug, 0,
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"Debug level");
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static u_int g_shsec_maxmem = MAXPHYS * 100;
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SYSCTL_UINT(_kern_geom_shsec, OID_AUTO, maxmem, CTLFLAG_RDTUN, &g_shsec_maxmem,
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0, "Maximum memory that can be allocated for I/O (in bytes)");
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static u_int g_shsec_alloc_failed = 0;
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SYSCTL_UINT(_kern_geom_shsec, OID_AUTO, alloc_failed, CTLFLAG_RD,
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&g_shsec_alloc_failed, 0, "How many times I/O allocation failed");
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/*
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* Greatest Common Divisor.
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*/
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static u_int
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gcd(u_int a, u_int b)
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{
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u_int c;
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while (b != 0) {
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c = a;
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a = b;
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b = (c % b);
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}
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return (a);
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}
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|
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/*
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* Least Common Multiple.
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*/
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static u_int
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lcm(u_int a, u_int b)
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{
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return ((a * b) / gcd(a, b));
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}
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static void
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g_shsec_init(struct g_class *mp __unused)
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{
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g_shsec_zone = uma_zcreate("g_shsec_zone", MAXPHYS, NULL, NULL, NULL,
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NULL, 0, 0);
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g_shsec_maxmem -= g_shsec_maxmem % MAXPHYS;
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uma_zone_set_max(g_shsec_zone, g_shsec_maxmem / MAXPHYS);
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}
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static void
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g_shsec_fini(struct g_class *mp __unused)
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{
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uma_zdestroy(g_shsec_zone);
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}
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/*
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* Return the number of valid disks.
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*/
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static u_int
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g_shsec_nvalid(struct g_shsec_softc *sc)
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{
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u_int i, no;
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no = 0;
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for (i = 0; i < sc->sc_ndisks; i++) {
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if (sc->sc_disks[i] != NULL)
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no++;
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}
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return (no);
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}
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static void
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g_shsec_remove_disk(struct g_consumer *cp)
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{
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struct g_shsec_softc *sc;
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u_int no;
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KASSERT(cp != NULL, ("Non-valid disk in %s.", __func__));
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sc = (struct g_shsec_softc *)cp->private;
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KASSERT(sc != NULL, ("NULL sc in %s.", __func__));
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no = cp->index;
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G_SHSEC_DEBUG(0, "Disk %s removed from %s.", cp->provider->name,
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sc->sc_name);
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sc->sc_disks[no] = NULL;
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if (sc->sc_provider != NULL) {
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g_wither_provider(sc->sc_provider, ENXIO);
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sc->sc_provider = NULL;
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G_SHSEC_DEBUG(0, "Device %s removed.", sc->sc_name);
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}
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if (cp->acr > 0 || cp->acw > 0 || cp->ace > 0)
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return;
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g_detach(cp);
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g_destroy_consumer(cp);
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}
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static void
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g_shsec_orphan(struct g_consumer *cp)
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{
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struct g_shsec_softc *sc;
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struct g_geom *gp;
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g_topology_assert();
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gp = cp->geom;
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sc = gp->softc;
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if (sc == NULL)
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return;
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g_shsec_remove_disk(cp);
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/* If there are no valid disks anymore, remove device. */
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if (LIST_EMPTY(&gp->consumer))
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g_shsec_destroy(sc, 1);
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}
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static int
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g_shsec_access(struct g_provider *pp, int dr, int dw, int de)
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{
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struct g_consumer *cp1, *cp2, *tmp;
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struct g_shsec_softc *sc;
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struct g_geom *gp;
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int error;
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gp = pp->geom;
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sc = gp->softc;
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/* On first open, grab an extra "exclusive" bit */
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if (pp->acr == 0 && pp->acw == 0 && pp->ace == 0)
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de++;
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/* ... and let go of it on last close */
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if ((pp->acr + dr) == 0 && (pp->acw + dw) == 0 && (pp->ace + de) == 0)
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de--;
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error = ENXIO;
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LIST_FOREACH_SAFE(cp1, &gp->consumer, consumer, tmp) {
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error = g_access(cp1, dr, dw, de);
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if (error != 0)
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goto fail;
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if (cp1->acr == 0 && cp1->acw == 0 && cp1->ace == 0 &&
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cp1->flags & G_CF_ORPHAN) {
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g_detach(cp1);
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g_destroy_consumer(cp1);
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}
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}
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/* If there are no valid disks anymore, remove device. */
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if (LIST_EMPTY(&gp->consumer))
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g_shsec_destroy(sc, 1);
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return (error);
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fail:
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/* If we fail here, backout all previous changes. */
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LIST_FOREACH(cp2, &gp->consumer, consumer) {
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if (cp1 == cp2)
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break;
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g_access(cp2, -dr, -dw, -de);
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}
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return (error);
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}
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static void
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g_shsec_xor1(uint32_t *src, uint32_t *dst, ssize_t len)
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{
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for (; len > 0; len -= sizeof(uint32_t), dst++)
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*dst = *dst ^ *src++;
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KASSERT(len == 0, ("len != 0 (len=%zd)", len));
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}
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static void
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g_shsec_done(struct bio *bp)
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{
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struct g_shsec_softc *sc;
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struct bio *pbp;
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pbp = bp->bio_parent;
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sc = pbp->bio_to->geom->softc;
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if (bp->bio_error == 0)
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G_SHSEC_LOGREQ(2, bp, "Request done.");
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else {
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G_SHSEC_LOGREQ(0, bp, "Request failed (error=%d).",
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bp->bio_error);
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if (pbp->bio_error == 0)
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pbp->bio_error = bp->bio_error;
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}
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if (pbp->bio_cmd == BIO_READ) {
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if ((pbp->bio_pflags & G_SHSEC_BFLAG_FIRST) != 0) {
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bcopy(bp->bio_data, pbp->bio_data, pbp->bio_length);
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pbp->bio_pflags = 0;
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} else {
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g_shsec_xor1((uint32_t *)bp->bio_data,
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(uint32_t *)pbp->bio_data,
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(ssize_t)pbp->bio_length);
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}
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}
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bzero(bp->bio_data, bp->bio_length);
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uma_zfree(g_shsec_zone, bp->bio_data);
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g_destroy_bio(bp);
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pbp->bio_inbed++;
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if (pbp->bio_children == pbp->bio_inbed) {
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pbp->bio_completed = pbp->bio_length;
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g_io_deliver(pbp, pbp->bio_error);
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}
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}
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|
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static void
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g_shsec_xor2(uint32_t *rand, uint32_t *dst, ssize_t len)
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{
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|
|
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for (; len > 0; len -= sizeof(uint32_t), dst++) {
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*rand = arc4random();
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*dst = *dst ^ *rand++;
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}
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KASSERT(len == 0, ("len != 0 (len=%zd)", len));
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}
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static void
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g_shsec_start(struct bio *bp)
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{
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TAILQ_HEAD(, bio) queue = TAILQ_HEAD_INITIALIZER(queue);
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struct g_shsec_softc *sc;
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struct bio *cbp;
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uint32_t *dst;
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ssize_t len;
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u_int no;
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int error;
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sc = bp->bio_to->geom->softc;
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/*
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* If sc == NULL, provider's error should be set and g_shsec_start()
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* should not be called at all.
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*/
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KASSERT(sc != NULL,
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("Provider's error should be set (error=%d)(device=%s).",
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bp->bio_to->error, bp->bio_to->name));
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|
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G_SHSEC_LOGREQ(2, bp, "Request received.");
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|
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switch (bp->bio_cmd) {
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case BIO_READ:
|
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case BIO_WRITE:
|
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case BIO_FLUSH:
|
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case BIO_SPEEDUP:
|
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/*
|
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* Only those requests are supported.
|
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*/
|
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break;
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case BIO_DELETE:
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case BIO_GETATTR:
|
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/* To which provider it should be delivered? */
|
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default:
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g_io_deliver(bp, EOPNOTSUPP);
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return;
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}
|
|
|
|
/*
|
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* Allocate all bios first and calculate XOR.
|
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*/
|
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dst = NULL;
|
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len = bp->bio_length;
|
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if (bp->bio_cmd == BIO_READ)
|
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bp->bio_pflags = G_SHSEC_BFLAG_FIRST;
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for (no = 0; no < sc->sc_ndisks; no++) {
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cbp = g_clone_bio(bp);
|
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if (cbp == NULL) {
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error = ENOMEM;
|
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goto failure;
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}
|
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TAILQ_INSERT_TAIL(&queue, cbp, bio_queue);
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|
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/*
|
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* Fill in the component buf structure.
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*/
|
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cbp->bio_done = g_shsec_done;
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cbp->bio_data = uma_zalloc(g_shsec_zone, M_NOWAIT);
|
|
if (cbp->bio_data == NULL) {
|
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g_shsec_alloc_failed++;
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error = ENOMEM;
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goto failure;
|
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}
|
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cbp->bio_caller2 = sc->sc_disks[no];
|
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if (bp->bio_cmd == BIO_WRITE) {
|
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if (no == 0) {
|
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dst = (uint32_t *)cbp->bio_data;
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bcopy(bp->bio_data, dst, len);
|
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} else {
|
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g_shsec_xor2((uint32_t *)cbp->bio_data, dst,
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len);
|
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}
|
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}
|
|
}
|
|
/*
|
|
* Fire off all allocated requests!
|
|
*/
|
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while ((cbp = TAILQ_FIRST(&queue)) != NULL) {
|
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struct g_consumer *cp;
|
|
|
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TAILQ_REMOVE(&queue, cbp, bio_queue);
|
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cp = cbp->bio_caller2;
|
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cbp->bio_caller2 = NULL;
|
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cbp->bio_to = cp->provider;
|
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G_SHSEC_LOGREQ(2, cbp, "Sending request.");
|
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g_io_request(cbp, cp);
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}
|
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return;
|
|
failure:
|
|
while ((cbp = TAILQ_FIRST(&queue)) != NULL) {
|
|
TAILQ_REMOVE(&queue, cbp, bio_queue);
|
|
bp->bio_children--;
|
|
if (cbp->bio_data != NULL) {
|
|
bzero(cbp->bio_data, cbp->bio_length);
|
|
uma_zfree(g_shsec_zone, cbp->bio_data);
|
|
}
|
|
g_destroy_bio(cbp);
|
|
}
|
|
if (bp->bio_error == 0)
|
|
bp->bio_error = error;
|
|
g_io_deliver(bp, bp->bio_error);
|
|
}
|
|
|
|
static void
|
|
g_shsec_check_and_run(struct g_shsec_softc *sc)
|
|
{
|
|
off_t mediasize, ms;
|
|
u_int no, sectorsize = 0;
|
|
|
|
if (g_shsec_nvalid(sc) != sc->sc_ndisks)
|
|
return;
|
|
|
|
sc->sc_provider = g_new_providerf(sc->sc_geom, "shsec/%s", sc->sc_name);
|
|
/*
|
|
* Find the smallest disk.
|
|
*/
|
|
mediasize = sc->sc_disks[0]->provider->mediasize;
|
|
mediasize -= sc->sc_disks[0]->provider->sectorsize;
|
|
sectorsize = sc->sc_disks[0]->provider->sectorsize;
|
|
for (no = 1; no < sc->sc_ndisks; no++) {
|
|
ms = sc->sc_disks[no]->provider->mediasize;
|
|
ms -= sc->sc_disks[no]->provider->sectorsize;
|
|
if (ms < mediasize)
|
|
mediasize = ms;
|
|
sectorsize = lcm(sectorsize,
|
|
sc->sc_disks[no]->provider->sectorsize);
|
|
}
|
|
sc->sc_provider->sectorsize = sectorsize;
|
|
sc->sc_provider->mediasize = mediasize;
|
|
g_error_provider(sc->sc_provider, 0);
|
|
|
|
G_SHSEC_DEBUG(0, "Device %s activated.", sc->sc_name);
|
|
}
|
|
|
|
static int
|
|
g_shsec_read_metadata(struct g_consumer *cp, struct g_shsec_metadata *md)
|
|
{
|
|
struct g_provider *pp;
|
|
u_char *buf;
|
|
int error;
|
|
|
|
g_topology_assert();
|
|
|
|
error = g_access(cp, 1, 0, 0);
|
|
if (error != 0)
|
|
return (error);
|
|
pp = cp->provider;
|
|
g_topology_unlock();
|
|
buf = g_read_data(cp, pp->mediasize - pp->sectorsize, pp->sectorsize,
|
|
&error);
|
|
g_topology_lock();
|
|
g_access(cp, -1, 0, 0);
|
|
if (buf == NULL)
|
|
return (error);
|
|
|
|
/* Decode metadata. */
|
|
shsec_metadata_decode(buf, md);
|
|
g_free(buf);
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Add disk to given device.
|
|
*/
|
|
static int
|
|
g_shsec_add_disk(struct g_shsec_softc *sc, struct g_provider *pp, u_int no)
|
|
{
|
|
struct g_consumer *cp, *fcp;
|
|
struct g_geom *gp;
|
|
struct g_shsec_metadata md;
|
|
int error;
|
|
|
|
/* Metadata corrupted? */
|
|
if (no >= sc->sc_ndisks)
|
|
return (EINVAL);
|
|
|
|
/* Check if disk is not already attached. */
|
|
if (sc->sc_disks[no] != NULL)
|
|
return (EEXIST);
|
|
|
|
gp = sc->sc_geom;
|
|
fcp = LIST_FIRST(&gp->consumer);
|
|
|
|
cp = g_new_consumer(gp);
|
|
error = g_attach(cp, pp);
|
|
if (error != 0) {
|
|
g_destroy_consumer(cp);
|
|
return (error);
|
|
}
|
|
|
|
if (fcp != NULL && (fcp->acr > 0 || fcp->acw > 0 || fcp->ace > 0)) {
|
|
error = g_access(cp, fcp->acr, fcp->acw, fcp->ace);
|
|
if (error != 0) {
|
|
g_detach(cp);
|
|
g_destroy_consumer(cp);
|
|
return (error);
|
|
}
|
|
}
|
|
|
|
/* Reread metadata. */
|
|
error = g_shsec_read_metadata(cp, &md);
|
|
if (error != 0)
|
|
goto fail;
|
|
|
|
if (strcmp(md.md_magic, G_SHSEC_MAGIC) != 0 ||
|
|
strcmp(md.md_name, sc->sc_name) != 0 || md.md_id != sc->sc_id) {
|
|
G_SHSEC_DEBUG(0, "Metadata on %s changed.", pp->name);
|
|
goto fail;
|
|
}
|
|
|
|
cp->private = sc;
|
|
cp->index = no;
|
|
sc->sc_disks[no] = cp;
|
|
|
|
G_SHSEC_DEBUG(0, "Disk %s attached to %s.", pp->name, sc->sc_name);
|
|
|
|
g_shsec_check_and_run(sc);
|
|
|
|
return (0);
|
|
fail:
|
|
if (fcp != NULL && (fcp->acr > 0 || fcp->acw > 0 || fcp->ace > 0))
|
|
g_access(cp, -fcp->acr, -fcp->acw, -fcp->ace);
|
|
g_detach(cp);
|
|
g_destroy_consumer(cp);
|
|
return (error);
|
|
}
|
|
|
|
static struct g_geom *
|
|
g_shsec_create(struct g_class *mp, const struct g_shsec_metadata *md)
|
|
{
|
|
struct g_shsec_softc *sc;
|
|
struct g_geom *gp;
|
|
u_int no;
|
|
|
|
G_SHSEC_DEBUG(1, "Creating device %s (id=%u).", md->md_name, md->md_id);
|
|
|
|
/* Two disks is minimum. */
|
|
if (md->md_all < 2) {
|
|
G_SHSEC_DEBUG(0, "Too few disks defined for %s.", md->md_name);
|
|
return (NULL);
|
|
}
|
|
|
|
/* Check for duplicate unit */
|
|
LIST_FOREACH(gp, &mp->geom, geom) {
|
|
sc = gp->softc;
|
|
if (sc != NULL && strcmp(sc->sc_name, md->md_name) == 0) {
|
|
G_SHSEC_DEBUG(0, "Device %s already configured.",
|
|
sc->sc_name);
|
|
return (NULL);
|
|
}
|
|
}
|
|
gp = g_new_geomf(mp, "%s", md->md_name);
|
|
sc = malloc(sizeof(*sc), M_SHSEC, M_WAITOK | M_ZERO);
|
|
gp->start = g_shsec_start;
|
|
gp->spoiled = g_shsec_orphan;
|
|
gp->orphan = g_shsec_orphan;
|
|
gp->access = g_shsec_access;
|
|
gp->dumpconf = g_shsec_dumpconf;
|
|
|
|
sc->sc_id = md->md_id;
|
|
sc->sc_ndisks = md->md_all;
|
|
sc->sc_disks = malloc(sizeof(struct g_consumer *) * sc->sc_ndisks,
|
|
M_SHSEC, M_WAITOK | M_ZERO);
|
|
for (no = 0; no < sc->sc_ndisks; no++)
|
|
sc->sc_disks[no] = NULL;
|
|
|
|
gp->softc = sc;
|
|
sc->sc_geom = gp;
|
|
sc->sc_provider = NULL;
|
|
|
|
G_SHSEC_DEBUG(0, "Device %s created (id=%u).", sc->sc_name, sc->sc_id);
|
|
|
|
return (gp);
|
|
}
|
|
|
|
static int
|
|
g_shsec_destroy(struct g_shsec_softc *sc, boolean_t force)
|
|
{
|
|
struct g_provider *pp;
|
|
struct g_geom *gp;
|
|
u_int no;
|
|
|
|
g_topology_assert();
|
|
|
|
if (sc == NULL)
|
|
return (ENXIO);
|
|
|
|
pp = sc->sc_provider;
|
|
if (pp != NULL && (pp->acr != 0 || pp->acw != 0 || pp->ace != 0)) {
|
|
if (force) {
|
|
G_SHSEC_DEBUG(0, "Device %s is still open, so it "
|
|
"can't be definitely removed.", pp->name);
|
|
} else {
|
|
G_SHSEC_DEBUG(1,
|
|
"Device %s is still open (r%dw%de%d).", pp->name,
|
|
pp->acr, pp->acw, pp->ace);
|
|
return (EBUSY);
|
|
}
|
|
}
|
|
|
|
for (no = 0; no < sc->sc_ndisks; no++) {
|
|
if (sc->sc_disks[no] != NULL)
|
|
g_shsec_remove_disk(sc->sc_disks[no]);
|
|
}
|
|
|
|
gp = sc->sc_geom;
|
|
gp->softc = NULL;
|
|
KASSERT(sc->sc_provider == NULL, ("Provider still exists? (device=%s)",
|
|
gp->name));
|
|
free(sc->sc_disks, M_SHSEC);
|
|
free(sc, M_SHSEC);
|
|
|
|
pp = LIST_FIRST(&gp->provider);
|
|
if (pp == NULL || (pp->acr == 0 && pp->acw == 0 && pp->ace == 0))
|
|
G_SHSEC_DEBUG(0, "Device %s destroyed.", gp->name);
|
|
|
|
g_wither_geom(gp, ENXIO);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
g_shsec_destroy_geom(struct gctl_req *req __unused, struct g_class *mp __unused,
|
|
struct g_geom *gp)
|
|
{
|
|
struct g_shsec_softc *sc;
|
|
|
|
sc = gp->softc;
|
|
return (g_shsec_destroy(sc, 0));
|
|
}
|
|
|
|
static struct g_geom *
|
|
g_shsec_taste(struct g_class *mp, struct g_provider *pp, int flags __unused)
|
|
{
|
|
struct g_shsec_metadata md;
|
|
struct g_shsec_softc *sc;
|
|
struct g_consumer *cp;
|
|
struct g_geom *gp;
|
|
int error;
|
|
|
|
g_trace(G_T_TOPOLOGY, "%s(%s, %s)", __func__, mp->name, pp->name);
|
|
g_topology_assert();
|
|
|
|
/* Skip providers that are already open for writing. */
|
|
if (pp->acw > 0)
|
|
return (NULL);
|
|
|
|
G_SHSEC_DEBUG(3, "Tasting %s.", pp->name);
|
|
|
|
gp = g_new_geomf(mp, "shsec:taste");
|
|
gp->start = g_shsec_start;
|
|
gp->access = g_shsec_access;
|
|
gp->orphan = g_shsec_orphan;
|
|
cp = g_new_consumer(gp);
|
|
g_attach(cp, pp);
|
|
error = g_shsec_read_metadata(cp, &md);
|
|
g_detach(cp);
|
|
g_destroy_consumer(cp);
|
|
g_destroy_geom(gp);
|
|
if (error != 0)
|
|
return (NULL);
|
|
gp = NULL;
|
|
|
|
if (strcmp(md.md_magic, G_SHSEC_MAGIC) != 0)
|
|
return (NULL);
|
|
if (md.md_version > G_SHSEC_VERSION) {
|
|
G_SHSEC_DEBUG(0, "Kernel module is too old to handle %s.\n",
|
|
pp->name);
|
|
return (NULL);
|
|
}
|
|
/*
|
|
* Backward compatibility:
|
|
*/
|
|
/* There was no md_provsize field in earlier versions of metadata. */
|
|
if (md.md_version < 1)
|
|
md.md_provsize = pp->mediasize;
|
|
|
|
if (md.md_provider[0] != '\0' &&
|
|
!g_compare_names(md.md_provider, pp->name))
|
|
return (NULL);
|
|
if (md.md_provsize != pp->mediasize)
|
|
return (NULL);
|
|
|
|
/*
|
|
* Let's check if device already exists.
|
|
*/
|
|
sc = NULL;
|
|
LIST_FOREACH(gp, &mp->geom, geom) {
|
|
sc = gp->softc;
|
|
if (sc == NULL)
|
|
continue;
|
|
if (strcmp(md.md_name, sc->sc_name) != 0)
|
|
continue;
|
|
if (md.md_id != sc->sc_id)
|
|
continue;
|
|
break;
|
|
}
|
|
if (gp != NULL) {
|
|
G_SHSEC_DEBUG(1, "Adding disk %s to %s.", pp->name, gp->name);
|
|
error = g_shsec_add_disk(sc, pp, md.md_no);
|
|
if (error != 0) {
|
|
G_SHSEC_DEBUG(0, "Cannot add disk %s to %s (error=%d).",
|
|
pp->name, gp->name, error);
|
|
return (NULL);
|
|
}
|
|
} else {
|
|
gp = g_shsec_create(mp, &md);
|
|
if (gp == NULL) {
|
|
G_SHSEC_DEBUG(0, "Cannot create device %s.", md.md_name);
|
|
return (NULL);
|
|
}
|
|
sc = gp->softc;
|
|
G_SHSEC_DEBUG(1, "Adding disk %s to %s.", pp->name, gp->name);
|
|
error = g_shsec_add_disk(sc, pp, md.md_no);
|
|
if (error != 0) {
|
|
G_SHSEC_DEBUG(0, "Cannot add disk %s to %s (error=%d).",
|
|
pp->name, gp->name, error);
|
|
g_shsec_destroy(sc, 1);
|
|
return (NULL);
|
|
}
|
|
}
|
|
return (gp);
|
|
}
|
|
|
|
static struct g_shsec_softc *
|
|
g_shsec_find_device(struct g_class *mp, const char *name)
|
|
{
|
|
struct g_shsec_softc *sc;
|
|
struct g_geom *gp;
|
|
|
|
LIST_FOREACH(gp, &mp->geom, geom) {
|
|
sc = gp->softc;
|
|
if (sc == NULL)
|
|
continue;
|
|
if (strcmp(sc->sc_name, name) == 0)
|
|
return (sc);
|
|
}
|
|
return (NULL);
|
|
}
|
|
|
|
static void
|
|
g_shsec_ctl_destroy(struct gctl_req *req, struct g_class *mp)
|
|
{
|
|
struct g_shsec_softc *sc;
|
|
int *force, *nargs, error;
|
|
const char *name;
|
|
char param[16];
|
|
u_int i;
|
|
|
|
g_topology_assert();
|
|
|
|
nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
|
|
if (nargs == NULL) {
|
|
gctl_error(req, "No '%s' argument.", "nargs");
|
|
return;
|
|
}
|
|
if (*nargs <= 0) {
|
|
gctl_error(req, "Missing device(s).");
|
|
return;
|
|
}
|
|
force = gctl_get_paraml(req, "force", sizeof(*force));
|
|
if (force == NULL) {
|
|
gctl_error(req, "No '%s' argument.", "force");
|
|
return;
|
|
}
|
|
|
|
for (i = 0; i < (u_int)*nargs; i++) {
|
|
snprintf(param, sizeof(param), "arg%u", i);
|
|
name = gctl_get_asciiparam(req, param);
|
|
if (name == NULL) {
|
|
gctl_error(req, "No 'arg%u' argument.", i);
|
|
return;
|
|
}
|
|
sc = g_shsec_find_device(mp, name);
|
|
if (sc == NULL) {
|
|
gctl_error(req, "No such device: %s.", name);
|
|
return;
|
|
}
|
|
error = g_shsec_destroy(sc, *force);
|
|
if (error != 0) {
|
|
gctl_error(req, "Cannot destroy device %s (error=%d).",
|
|
sc->sc_name, error);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
g_shsec_config(struct gctl_req *req, struct g_class *mp, const char *verb)
|
|
{
|
|
uint32_t *version;
|
|
|
|
g_topology_assert();
|
|
|
|
version = gctl_get_paraml(req, "version", sizeof(*version));
|
|
if (version == NULL) {
|
|
gctl_error(req, "No '%s' argument.", "version");
|
|
return;
|
|
}
|
|
if (*version != G_SHSEC_VERSION) {
|
|
gctl_error(req, "Userland and kernel parts are out of sync.");
|
|
return;
|
|
}
|
|
|
|
if (strcmp(verb, "stop") == 0) {
|
|
g_shsec_ctl_destroy(req, mp);
|
|
return;
|
|
}
|
|
|
|
gctl_error(req, "Unknown verb.");
|
|
}
|
|
|
|
static void
|
|
g_shsec_dumpconf(struct sbuf *sb, const char *indent, struct g_geom *gp,
|
|
struct g_consumer *cp, struct g_provider *pp)
|
|
{
|
|
struct g_shsec_softc *sc;
|
|
|
|
sc = gp->softc;
|
|
if (sc == NULL)
|
|
return;
|
|
if (pp != NULL) {
|
|
/* Nothing here. */
|
|
} else if (cp != NULL) {
|
|
sbuf_printf(sb, "%s<Number>%u</Number>\n", indent,
|
|
(u_int)cp->index);
|
|
} else {
|
|
sbuf_printf(sb, "%s<ID>%u</ID>\n", indent, (u_int)sc->sc_id);
|
|
sbuf_printf(sb, "%s<Status>Total=%u, Online=%u</Status>\n",
|
|
indent, sc->sc_ndisks, g_shsec_nvalid(sc));
|
|
sbuf_printf(sb, "%s<State>", indent);
|
|
if (sc->sc_provider != NULL && sc->sc_provider->error == 0)
|
|
sbuf_printf(sb, "UP");
|
|
else
|
|
sbuf_printf(sb, "DOWN");
|
|
sbuf_printf(sb, "</State>\n");
|
|
}
|
|
}
|
|
|
|
DECLARE_GEOM_CLASS(g_shsec_class, g_shsec);
|
|
MODULE_VERSION(geom_shsec, 0);
|