1212 lines
31 KiB
C
1212 lines
31 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2005-2011 Pawel Jakub Dawidek <pawel@dawidek.net>
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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/sysctl.h>
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#include <sys/malloc.h>
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#include <sys/kthread.h>
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#include <sys/proc.h>
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#include <sys/sched.h>
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#include <sys/uio.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/eli/g_eli.h>
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MALLOC_DECLARE(M_ELI);
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static void
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g_eli_ctl_attach(struct gctl_req *req, struct g_class *mp)
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{
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struct g_eli_metadata md;
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struct g_provider *pp;
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u_char *key, mkey[G_ELI_DATAIVKEYLEN];
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int *nargs, *detach, *readonly, *dryrunp;
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int keysize, error, nkey, dryrun, dummy;
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intmax_t *valp;
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g_topology_assert();
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nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
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if (nargs == NULL) {
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gctl_error(req, "No '%s' argument.", "nargs");
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return;
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}
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if (*nargs != 1) {
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gctl_error(req, "Invalid number of arguments.");
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return;
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}
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detach = gctl_get_paraml(req, "detach", sizeof(*detach));
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if (detach == NULL) {
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gctl_error(req, "No '%s' argument.", "detach");
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return;
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}
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/* "keyno" is optional for backward compatibility */
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nkey = -1;
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valp = gctl_get_param(req, "keyno", &dummy);
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if (valp != NULL) {
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valp = gctl_get_paraml(req, "keyno", sizeof(*valp));
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if (valp != NULL)
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nkey = *valp;
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}
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if (nkey < -1 || nkey >= G_ELI_MAXMKEYS) {
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gctl_error(req, "Invalid '%s' argument.", "keyno");
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return;
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}
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readonly = gctl_get_paraml(req, "readonly", sizeof(*readonly));
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if (readonly == NULL) {
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gctl_error(req, "No '%s' argument.", "readonly");
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return;
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}
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/* "dryrun" is optional for backward compatibility */
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dryrun = 0;
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dryrunp = gctl_get_param(req, "dryrun", &dummy);
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if (dryrunp != NULL) {
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dryrunp = gctl_get_paraml(req, "dryrun", sizeof(*dryrunp));
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if (dryrunp != NULL)
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dryrun = *dryrunp;
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}
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if (*detach && *readonly) {
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gctl_error(req, "Options -d and -r are mutually exclusive.");
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return;
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}
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pp = gctl_get_provider(req, "arg0");
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if (pp == NULL)
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return;
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error = g_eli_read_metadata(mp, pp, &md);
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if (error != 0) {
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gctl_error(req, "Cannot read metadata from %s (error=%d).",
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pp->name, error);
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return;
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}
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if (md.md_keys == 0x00) {
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explicit_bzero(&md, sizeof(md));
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gctl_error(req, "No valid keys on %s.", pp->name);
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return;
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}
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if (!eli_metadata_crypto_supported(&md)) {
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explicit_bzero(&md, sizeof(md));
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gctl_error(req, "Invalid or unsupported algorithms.");
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return;
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}
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key = gctl_get_param(req, "key", &keysize);
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if (key == NULL || keysize != G_ELI_USERKEYLEN) {
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explicit_bzero(&md, sizeof(md));
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gctl_error(req, "No '%s' argument.", "key");
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return;
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}
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if (nkey == -1)
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error = g_eli_mkey_decrypt_any(&md, key, mkey, &nkey);
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else
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error = g_eli_mkey_decrypt(&md, key, mkey, nkey);
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explicit_bzero(key, keysize);
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if (error == -1) {
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explicit_bzero(&md, sizeof(md));
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gctl_error(req, "Wrong key for %s.", pp->name);
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return;
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} else if (error > 0) {
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explicit_bzero(&md, sizeof(md));
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gctl_error(req, "Cannot decrypt Master Key for %s (error=%d).",
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pp->name, error);
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return;
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}
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G_ELI_DEBUG(1, "Using Master Key %u for %s.", nkey, pp->name);
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if (*detach)
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md.md_flags |= G_ELI_FLAG_WO_DETACH;
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if (*readonly)
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md.md_flags |= G_ELI_FLAG_RO;
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if (!dryrun)
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g_eli_create(req, mp, pp, &md, mkey, nkey);
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explicit_bzero(mkey, sizeof(mkey));
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explicit_bzero(&md, sizeof(md));
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}
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static struct g_eli_softc *
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g_eli_find_device(struct g_class *mp, const char *prov)
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{
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struct g_eli_softc *sc;
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struct g_geom *gp;
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struct g_provider *pp;
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struct g_consumer *cp;
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if (strncmp(prov, _PATH_DEV, strlen(_PATH_DEV)) == 0)
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prov += strlen(_PATH_DEV);
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LIST_FOREACH(gp, &mp->geom, geom) {
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sc = gp->softc;
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if (sc == NULL)
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continue;
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pp = LIST_FIRST(&gp->provider);
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if (pp != NULL && strcmp(pp->name, prov) == 0)
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return (sc);
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cp = LIST_FIRST(&gp->consumer);
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if (cp != NULL && cp->provider != NULL &&
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strcmp(cp->provider->name, prov) == 0) {
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return (sc);
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}
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}
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return (NULL);
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}
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static void
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g_eli_ctl_detach(struct gctl_req *req, struct g_class *mp)
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{
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struct g_eli_softc *sc;
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int *force, *last, *nargs, error;
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const char *prov;
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char param[16];
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int i;
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g_topology_assert();
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nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
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if (nargs == NULL) {
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gctl_error(req, "No '%s' argument.", "nargs");
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return;
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}
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if (*nargs <= 0) {
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gctl_error(req, "Missing device(s).");
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return;
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}
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force = gctl_get_paraml(req, "force", sizeof(*force));
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if (force == NULL) {
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gctl_error(req, "No '%s' argument.", "force");
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return;
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}
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last = gctl_get_paraml(req, "last", sizeof(*last));
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if (last == NULL) {
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gctl_error(req, "No '%s' argument.", "last");
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return;
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}
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for (i = 0; i < *nargs; i++) {
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snprintf(param, sizeof(param), "arg%d", i);
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prov = gctl_get_asciiparam(req, param);
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if (prov == NULL) {
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gctl_error(req, "No 'arg%d' argument.", i);
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return;
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}
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sc = g_eli_find_device(mp, prov);
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if (sc == NULL) {
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gctl_error(req, "No such device: %s.", prov);
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return;
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}
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if (*last) {
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sc->sc_flags |= G_ELI_FLAG_RW_DETACH;
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sc->sc_geom->access = g_eli_access;
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} else {
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error = g_eli_destroy(sc, *force ? TRUE : FALSE);
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if (error != 0) {
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gctl_error(req,
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"Cannot destroy device %s (error=%d).",
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sc->sc_name, error);
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return;
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}
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}
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}
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}
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static void
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g_eli_ctl_onetime(struct gctl_req *req, struct g_class *mp)
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{
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struct g_eli_metadata md;
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struct g_provider *pp;
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const char *name;
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intmax_t *keylen, *sectorsize;
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u_char mkey[G_ELI_DATAIVKEYLEN];
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int *nargs, *detach, *noautoresize, *notrim;
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g_topology_assert();
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bzero(&md, sizeof(md));
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nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
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if (nargs == NULL) {
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gctl_error(req, "No '%s' argument.", "nargs");
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return;
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}
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if (*nargs != 1) {
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gctl_error(req, "Invalid number of arguments.");
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return;
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}
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strlcpy(md.md_magic, G_ELI_MAGIC, sizeof(md.md_magic));
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md.md_version = G_ELI_VERSION;
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md.md_flags |= G_ELI_FLAG_ONETIME;
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md.md_flags |= G_ELI_FLAG_AUTORESIZE;
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detach = gctl_get_paraml(req, "detach", sizeof(*detach));
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if (detach != NULL && *detach)
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md.md_flags |= G_ELI_FLAG_WO_DETACH;
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noautoresize = gctl_get_paraml(req, "noautoresize",
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sizeof(*noautoresize));
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if (noautoresize != NULL && *noautoresize)
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md.md_flags &= ~G_ELI_FLAG_AUTORESIZE;
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notrim = gctl_get_paraml(req, "notrim", sizeof(*notrim));
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if (notrim != NULL && *notrim)
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md.md_flags |= G_ELI_FLAG_NODELETE;
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md.md_ealgo = CRYPTO_ALGORITHM_MIN - 1;
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name = gctl_get_asciiparam(req, "aalgo");
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if (name == NULL) {
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gctl_error(req, "No '%s' argument.", "aalgo");
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return;
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}
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if (*name != '\0') {
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md.md_aalgo = g_eli_str2aalgo(name);
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if (md.md_aalgo >= CRYPTO_ALGORITHM_MIN &&
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md.md_aalgo <= CRYPTO_ALGORITHM_MAX) {
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md.md_flags |= G_ELI_FLAG_AUTH;
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} else {
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/*
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* For backward compatibility, check if the -a option
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* was used to provide encryption algorithm.
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*/
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md.md_ealgo = g_eli_str2ealgo(name);
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if (md.md_ealgo < CRYPTO_ALGORITHM_MIN ||
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md.md_ealgo > CRYPTO_ALGORITHM_MAX) {
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gctl_error(req,
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"Invalid authentication algorithm.");
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return;
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} else {
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gctl_error(req, "warning: The -e option, not "
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"the -a option is now used to specify "
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"encryption algorithm to use.");
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}
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}
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}
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if (md.md_ealgo < CRYPTO_ALGORITHM_MIN ||
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md.md_ealgo > CRYPTO_ALGORITHM_MAX) {
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name = gctl_get_asciiparam(req, "ealgo");
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if (name == NULL) {
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gctl_error(req, "No '%s' argument.", "ealgo");
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return;
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}
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md.md_ealgo = g_eli_str2ealgo(name);
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if (md.md_ealgo < CRYPTO_ALGORITHM_MIN ||
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md.md_ealgo > CRYPTO_ALGORITHM_MAX) {
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gctl_error(req, "Invalid encryption algorithm.");
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return;
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}
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}
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keylen = gctl_get_paraml(req, "keylen", sizeof(*keylen));
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if (keylen == NULL) {
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gctl_error(req, "No '%s' argument.", "keylen");
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return;
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}
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md.md_keylen = g_eli_keylen(md.md_ealgo, *keylen);
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if (md.md_keylen == 0) {
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gctl_error(req, "Invalid '%s' argument.", "keylen");
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return;
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}
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/* Not important here. */
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md.md_provsize = 0;
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/* Not important here. */
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bzero(md.md_salt, sizeof(md.md_salt));
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md.md_keys = 0x01;
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arc4rand(mkey, sizeof(mkey), 0);
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/* Not important here. */
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bzero(md.md_hash, sizeof(md.md_hash));
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pp = gctl_get_provider(req, "arg0");
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if (pp == NULL)
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return;
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sectorsize = gctl_get_paraml(req, "sectorsize", sizeof(*sectorsize));
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if (sectorsize == NULL) {
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gctl_error(req, "No '%s' argument.", "sectorsize");
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return;
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}
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if (*sectorsize == 0)
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md.md_sectorsize = pp->sectorsize;
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else {
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if (*sectorsize < 0 || (*sectorsize % pp->sectorsize) != 0) {
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gctl_error(req, "Invalid sector size.");
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return;
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}
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if (*sectorsize > PAGE_SIZE) {
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gctl_error(req, "warning: Using sectorsize bigger than "
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"the page size!");
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}
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md.md_sectorsize = *sectorsize;
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}
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g_eli_create(req, mp, pp, &md, mkey, -1);
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explicit_bzero(mkey, sizeof(mkey));
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explicit_bzero(&md, sizeof(md));
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}
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static void
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g_eli_ctl_configure(struct gctl_req *req, struct g_class *mp)
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{
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struct g_eli_softc *sc;
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struct g_eli_metadata md;
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struct g_provider *pp;
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struct g_consumer *cp;
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char param[16];
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const char *prov;
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u_char *sector;
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int *nargs, *boot, *noboot, *trim, *notrim, *geliboot, *nogeliboot;
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int *displaypass, *nodisplaypass, *autoresize, *noautoresize;
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int zero, error, changed;
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u_int i;
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g_topology_assert();
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changed = 0;
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zero = 0;
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nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
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if (nargs == NULL) {
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gctl_error(req, "No '%s' argument.", "nargs");
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return;
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}
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if (*nargs <= 0) {
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gctl_error(req, "Missing device(s).");
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return;
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}
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boot = gctl_get_paraml(req, "boot", sizeof(*boot));
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if (boot == NULL)
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boot = &zero;
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noboot = gctl_get_paraml(req, "noboot", sizeof(*noboot));
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if (noboot == NULL)
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noboot = &zero;
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if (*boot && *noboot) {
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gctl_error(req, "Options -b and -B are mutually exclusive.");
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return;
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}
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if (*boot || *noboot)
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changed = 1;
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trim = gctl_get_paraml(req, "trim", sizeof(*trim));
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if (trim == NULL)
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trim = &zero;
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notrim = gctl_get_paraml(req, "notrim", sizeof(*notrim));
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if (notrim == NULL)
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notrim = &zero;
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if (*trim && *notrim) {
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gctl_error(req, "Options -t and -T are mutually exclusive.");
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return;
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}
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if (*trim || *notrim)
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changed = 1;
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geliboot = gctl_get_paraml(req, "geliboot", sizeof(*geliboot));
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if (geliboot == NULL)
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geliboot = &zero;
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nogeliboot = gctl_get_paraml(req, "nogeliboot", sizeof(*nogeliboot));
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if (nogeliboot == NULL)
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nogeliboot = &zero;
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if (*geliboot && *nogeliboot) {
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gctl_error(req, "Options -g and -G are mutually exclusive.");
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return;
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}
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if (*geliboot || *nogeliboot)
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changed = 1;
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displaypass = gctl_get_paraml(req, "displaypass", sizeof(*displaypass));
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if (displaypass == NULL)
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displaypass = &zero;
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nodisplaypass = gctl_get_paraml(req, "nodisplaypass", sizeof(*nodisplaypass));
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if (nodisplaypass == NULL)
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nodisplaypass = &zero;
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if (*displaypass && *nodisplaypass) {
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gctl_error(req, "Options -d and -D are mutually exclusive.");
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return;
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}
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if (*displaypass || *nodisplaypass)
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changed = 1;
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autoresize = gctl_get_paraml(req, "autoresize", sizeof(*autoresize));
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if (autoresize == NULL)
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autoresize = &zero;
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noautoresize = gctl_get_paraml(req, "noautoresize",
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sizeof(*noautoresize));
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if (noautoresize == NULL)
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noautoresize = &zero;
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if (*autoresize && *noautoresize) {
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gctl_error(req, "Options -r and -R are mutually exclusive.");
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return;
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}
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if (*autoresize || *noautoresize)
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changed = 1;
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|
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if (!changed) {
|
|
gctl_error(req, "No option given.");
|
|
return;
|
|
}
|
|
|
|
for (i = 0; i < *nargs; i++) {
|
|
snprintf(param, sizeof(param), "arg%d", i);
|
|
prov = gctl_get_asciiparam(req, param);
|
|
if (prov == NULL) {
|
|
gctl_error(req, "No 'arg%d' argument.", i);
|
|
return;
|
|
}
|
|
sc = g_eli_find_device(mp, prov);
|
|
if (sc == NULL) {
|
|
/*
|
|
* We ignore not attached providers, userland part will
|
|
* take care of them.
|
|
*/
|
|
G_ELI_DEBUG(1, "Skipping configuration of not attached "
|
|
"provider %s.", prov);
|
|
continue;
|
|
}
|
|
if (sc->sc_flags & G_ELI_FLAG_RO) {
|
|
gctl_error(req, "Cannot change configuration of "
|
|
"read-only provider %s.", prov);
|
|
continue;
|
|
}
|
|
|
|
if (*boot && (sc->sc_flags & G_ELI_FLAG_BOOT)) {
|
|
G_ELI_DEBUG(1, "BOOT flag already configured for %s.",
|
|
prov);
|
|
continue;
|
|
} else if (*noboot && !(sc->sc_flags & G_ELI_FLAG_BOOT)) {
|
|
G_ELI_DEBUG(1, "BOOT flag not configured for %s.",
|
|
prov);
|
|
continue;
|
|
}
|
|
|
|
if (*notrim && (sc->sc_flags & G_ELI_FLAG_NODELETE)) {
|
|
G_ELI_DEBUG(1, "TRIM disable flag already configured for %s.",
|
|
prov);
|
|
continue;
|
|
} else if (*trim && !(sc->sc_flags & G_ELI_FLAG_NODELETE)) {
|
|
G_ELI_DEBUG(1, "TRIM disable flag not configured for %s.",
|
|
prov);
|
|
continue;
|
|
}
|
|
|
|
if (*geliboot && (sc->sc_flags & G_ELI_FLAG_GELIBOOT)) {
|
|
G_ELI_DEBUG(1, "GELIBOOT flag already configured for %s.",
|
|
prov);
|
|
continue;
|
|
} else if (*nogeliboot && !(sc->sc_flags & G_ELI_FLAG_GELIBOOT)) {
|
|
G_ELI_DEBUG(1, "GELIBOOT flag not configured for %s.",
|
|
prov);
|
|
continue;
|
|
}
|
|
|
|
if (*displaypass && (sc->sc_flags & G_ELI_FLAG_GELIDISPLAYPASS)) {
|
|
G_ELI_DEBUG(1, "GELIDISPLAYPASS flag already configured for %s.",
|
|
prov);
|
|
continue;
|
|
} else if (*nodisplaypass &&
|
|
!(sc->sc_flags & G_ELI_FLAG_GELIDISPLAYPASS)) {
|
|
G_ELI_DEBUG(1, "GELIDISPLAYPASS flag not configured for %s.",
|
|
prov);
|
|
continue;
|
|
}
|
|
|
|
if (*autoresize && (sc->sc_flags & G_ELI_FLAG_AUTORESIZE)) {
|
|
G_ELI_DEBUG(1, "AUTORESIZE flag already configured for %s.",
|
|
prov);
|
|
continue;
|
|
} else if (*noautoresize &&
|
|
!(sc->sc_flags & G_ELI_FLAG_AUTORESIZE)) {
|
|
G_ELI_DEBUG(1, "AUTORESIZE flag not configured for %s.",
|
|
prov);
|
|
continue;
|
|
}
|
|
|
|
if (!(sc->sc_flags & G_ELI_FLAG_ONETIME)) {
|
|
/*
|
|
* ONETIME providers don't write metadata to
|
|
* disk, so don't try reading it. This means
|
|
* we're bit-flipping uninitialized memory in md
|
|
* below, but that's OK; we don't do anything
|
|
* with it later.
|
|
*/
|
|
cp = LIST_FIRST(&sc->sc_geom->consumer);
|
|
pp = cp->provider;
|
|
error = g_eli_read_metadata(mp, pp, &md);
|
|
if (error != 0) {
|
|
gctl_error(req,
|
|
"Cannot read metadata from %s (error=%d).",
|
|
prov, error);
|
|
continue;
|
|
}
|
|
}
|
|
|
|
if (*boot) {
|
|
md.md_flags |= G_ELI_FLAG_BOOT;
|
|
sc->sc_flags |= G_ELI_FLAG_BOOT;
|
|
} else if (*noboot) {
|
|
md.md_flags &= ~G_ELI_FLAG_BOOT;
|
|
sc->sc_flags &= ~G_ELI_FLAG_BOOT;
|
|
}
|
|
|
|
if (*notrim) {
|
|
md.md_flags |= G_ELI_FLAG_NODELETE;
|
|
sc->sc_flags |= G_ELI_FLAG_NODELETE;
|
|
} else if (*trim) {
|
|
md.md_flags &= ~G_ELI_FLAG_NODELETE;
|
|
sc->sc_flags &= ~G_ELI_FLAG_NODELETE;
|
|
}
|
|
|
|
if (*geliboot) {
|
|
md.md_flags |= G_ELI_FLAG_GELIBOOT;
|
|
sc->sc_flags |= G_ELI_FLAG_GELIBOOT;
|
|
} else if (*nogeliboot) {
|
|
md.md_flags &= ~G_ELI_FLAG_GELIBOOT;
|
|
sc->sc_flags &= ~G_ELI_FLAG_GELIBOOT;
|
|
}
|
|
|
|
if (*displaypass) {
|
|
md.md_flags |= G_ELI_FLAG_GELIDISPLAYPASS;
|
|
sc->sc_flags |= G_ELI_FLAG_GELIDISPLAYPASS;
|
|
} else if (*nodisplaypass) {
|
|
md.md_flags &= ~G_ELI_FLAG_GELIDISPLAYPASS;
|
|
sc->sc_flags &= ~G_ELI_FLAG_GELIDISPLAYPASS;
|
|
}
|
|
|
|
if (*autoresize) {
|
|
md.md_flags |= G_ELI_FLAG_AUTORESIZE;
|
|
sc->sc_flags |= G_ELI_FLAG_AUTORESIZE;
|
|
} else if (*noautoresize) {
|
|
md.md_flags &= ~G_ELI_FLAG_AUTORESIZE;
|
|
sc->sc_flags &= ~G_ELI_FLAG_AUTORESIZE;
|
|
}
|
|
|
|
if (sc->sc_flags & G_ELI_FLAG_ONETIME) {
|
|
/* There's no metadata on disk so we are done here. */
|
|
continue;
|
|
}
|
|
|
|
sector = malloc(pp->sectorsize, M_ELI, M_WAITOK | M_ZERO);
|
|
eli_metadata_encode(&md, sector);
|
|
error = g_write_data(cp, pp->mediasize - pp->sectorsize, sector,
|
|
pp->sectorsize);
|
|
if (error != 0) {
|
|
gctl_error(req,
|
|
"Cannot store metadata on %s (error=%d).",
|
|
prov, error);
|
|
}
|
|
explicit_bzero(&md, sizeof(md));
|
|
zfree(sector, M_ELI);
|
|
}
|
|
}
|
|
|
|
static void
|
|
g_eli_ctl_setkey(struct gctl_req *req, struct g_class *mp)
|
|
{
|
|
struct g_eli_softc *sc;
|
|
struct g_eli_metadata md;
|
|
struct g_provider *pp;
|
|
struct g_consumer *cp;
|
|
const char *name;
|
|
u_char *key, *mkeydst, *sector;
|
|
intmax_t *valp;
|
|
int keysize, nkey, error;
|
|
|
|
g_topology_assert();
|
|
|
|
name = gctl_get_asciiparam(req, "arg0");
|
|
if (name == NULL) {
|
|
gctl_error(req, "No 'arg%u' argument.", 0);
|
|
return;
|
|
}
|
|
key = gctl_get_param(req, "key", &keysize);
|
|
if (key == NULL || keysize != G_ELI_USERKEYLEN) {
|
|
gctl_error(req, "No '%s' argument.", "key");
|
|
return;
|
|
}
|
|
sc = g_eli_find_device(mp, name);
|
|
if (sc == NULL) {
|
|
gctl_error(req, "Provider %s is invalid.", name);
|
|
return;
|
|
}
|
|
if (sc->sc_flags & G_ELI_FLAG_RO) {
|
|
gctl_error(req, "Cannot change keys for read-only provider.");
|
|
return;
|
|
}
|
|
cp = LIST_FIRST(&sc->sc_geom->consumer);
|
|
pp = cp->provider;
|
|
|
|
error = g_eli_read_metadata(mp, pp, &md);
|
|
if (error != 0) {
|
|
gctl_error(req, "Cannot read metadata from %s (error=%d).",
|
|
name, error);
|
|
return;
|
|
}
|
|
|
|
valp = gctl_get_paraml(req, "keyno", sizeof(*valp));
|
|
if (valp == NULL) {
|
|
gctl_error(req, "No '%s' argument.", "keyno");
|
|
return;
|
|
}
|
|
if (*valp != -1)
|
|
nkey = *valp;
|
|
else
|
|
nkey = sc->sc_nkey;
|
|
if (nkey < 0 || nkey >= G_ELI_MAXMKEYS) {
|
|
gctl_error(req, "Invalid '%s' argument.", "keyno");
|
|
return;
|
|
}
|
|
|
|
valp = gctl_get_paraml(req, "iterations", sizeof(*valp));
|
|
if (valp == NULL) {
|
|
gctl_error(req, "No '%s' argument.", "iterations");
|
|
return;
|
|
}
|
|
/* Check if iterations number should and can be changed. */
|
|
if (*valp != -1 && md.md_iterations == -1) {
|
|
md.md_iterations = *valp;
|
|
} else if (*valp != -1 && *valp != md.md_iterations) {
|
|
if (bitcount32(md.md_keys) != 1) {
|
|
gctl_error(req, "To be able to use '-i' option, only "
|
|
"one key can be defined.");
|
|
return;
|
|
}
|
|
if (md.md_keys != (1 << nkey)) {
|
|
gctl_error(req, "Only already defined key can be "
|
|
"changed when '-i' option is used.");
|
|
return;
|
|
}
|
|
md.md_iterations = *valp;
|
|
}
|
|
|
|
mkeydst = md.md_mkeys + nkey * G_ELI_MKEYLEN;
|
|
md.md_keys |= (1 << nkey);
|
|
|
|
bcopy(sc->sc_mkey, mkeydst, sizeof(sc->sc_mkey));
|
|
|
|
/* Encrypt Master Key with the new key. */
|
|
error = g_eli_mkey_encrypt(md.md_ealgo, key, md.md_keylen, mkeydst);
|
|
explicit_bzero(key, keysize);
|
|
if (error != 0) {
|
|
explicit_bzero(&md, sizeof(md));
|
|
gctl_error(req, "Cannot encrypt Master Key (error=%d).", error);
|
|
return;
|
|
}
|
|
|
|
sector = malloc(pp->sectorsize, M_ELI, M_WAITOK | M_ZERO);
|
|
/* Store metadata with fresh key. */
|
|
eli_metadata_encode(&md, sector);
|
|
explicit_bzero(&md, sizeof(md));
|
|
error = g_write_data(cp, pp->mediasize - pp->sectorsize, sector,
|
|
pp->sectorsize);
|
|
zfree(sector, M_ELI);
|
|
if (error != 0) {
|
|
gctl_error(req, "Cannot store metadata on %s (error=%d).",
|
|
pp->name, error);
|
|
return;
|
|
}
|
|
G_ELI_DEBUG(1, "Key %u changed on %s.", nkey, pp->name);
|
|
}
|
|
|
|
static void
|
|
g_eli_ctl_delkey(struct gctl_req *req, struct g_class *mp)
|
|
{
|
|
struct g_eli_softc *sc;
|
|
struct g_eli_metadata md;
|
|
struct g_provider *pp;
|
|
struct g_consumer *cp;
|
|
const char *name;
|
|
u_char *mkeydst, *sector;
|
|
intmax_t *valp;
|
|
size_t keysize;
|
|
int error, nkey, *all, *force;
|
|
u_int i;
|
|
|
|
g_topology_assert();
|
|
|
|
nkey = 0; /* fixes causeless gcc warning */
|
|
|
|
name = gctl_get_asciiparam(req, "arg0");
|
|
if (name == NULL) {
|
|
gctl_error(req, "No 'arg%u' argument.", 0);
|
|
return;
|
|
}
|
|
sc = g_eli_find_device(mp, name);
|
|
if (sc == NULL) {
|
|
gctl_error(req, "Provider %s is invalid.", name);
|
|
return;
|
|
}
|
|
if (sc->sc_flags & G_ELI_FLAG_RO) {
|
|
gctl_error(req, "Cannot delete keys for read-only provider.");
|
|
return;
|
|
}
|
|
cp = LIST_FIRST(&sc->sc_geom->consumer);
|
|
pp = cp->provider;
|
|
|
|
error = g_eli_read_metadata(mp, pp, &md);
|
|
if (error != 0) {
|
|
gctl_error(req, "Cannot read metadata from %s (error=%d).",
|
|
name, error);
|
|
return;
|
|
}
|
|
|
|
all = gctl_get_paraml(req, "all", sizeof(*all));
|
|
if (all == NULL) {
|
|
gctl_error(req, "No '%s' argument.", "all");
|
|
return;
|
|
}
|
|
|
|
if (*all) {
|
|
mkeydst = md.md_mkeys;
|
|
keysize = sizeof(md.md_mkeys);
|
|
} else {
|
|
force = gctl_get_paraml(req, "force", sizeof(*force));
|
|
if (force == NULL) {
|
|
gctl_error(req, "No '%s' argument.", "force");
|
|
return;
|
|
}
|
|
|
|
valp = gctl_get_paraml(req, "keyno", sizeof(*valp));
|
|
if (valp == NULL) {
|
|
gctl_error(req, "No '%s' argument.", "keyno");
|
|
return;
|
|
}
|
|
if (*valp != -1)
|
|
nkey = *valp;
|
|
else
|
|
nkey = sc->sc_nkey;
|
|
if (nkey < 0 || nkey >= G_ELI_MAXMKEYS) {
|
|
gctl_error(req, "Invalid '%s' argument.", "keyno");
|
|
return;
|
|
}
|
|
if (!(md.md_keys & (1 << nkey)) && !*force) {
|
|
gctl_error(req, "Master Key %u is not set.", nkey);
|
|
return;
|
|
}
|
|
md.md_keys &= ~(1 << nkey);
|
|
if (md.md_keys == 0 && !*force) {
|
|
gctl_error(req, "This is the last Master Key. Use '-f' "
|
|
"flag if you really want to remove it.");
|
|
return;
|
|
}
|
|
mkeydst = md.md_mkeys + nkey * G_ELI_MKEYLEN;
|
|
keysize = G_ELI_MKEYLEN;
|
|
}
|
|
|
|
sector = malloc(pp->sectorsize, M_ELI, M_WAITOK | M_ZERO);
|
|
for (i = 0; i <= g_eli_overwrites; i++) {
|
|
if (i == g_eli_overwrites)
|
|
explicit_bzero(mkeydst, keysize);
|
|
else
|
|
arc4rand(mkeydst, keysize, 0);
|
|
/* Store metadata with destroyed key. */
|
|
eli_metadata_encode(&md, sector);
|
|
error = g_write_data(cp, pp->mediasize - pp->sectorsize, sector,
|
|
pp->sectorsize);
|
|
if (error != 0) {
|
|
G_ELI_DEBUG(0, "Cannot store metadata on %s "
|
|
"(error=%d).", pp->name, error);
|
|
}
|
|
/*
|
|
* Flush write cache so we don't overwrite data N times in cache
|
|
* and only once on disk.
|
|
*/
|
|
(void)g_io_flush(cp);
|
|
}
|
|
explicit_bzero(&md, sizeof(md));
|
|
zfree(sector, M_ELI);
|
|
if (*all)
|
|
G_ELI_DEBUG(1, "All keys removed from %s.", pp->name);
|
|
else
|
|
G_ELI_DEBUG(1, "Key %d removed from %s.", nkey, pp->name);
|
|
}
|
|
|
|
static void
|
|
g_eli_suspend_one(struct g_eli_softc *sc, struct gctl_req *req)
|
|
{
|
|
struct g_eli_worker *wr;
|
|
|
|
g_topology_assert();
|
|
|
|
KASSERT(sc != NULL, ("NULL sc"));
|
|
|
|
if (sc->sc_flags & G_ELI_FLAG_ONETIME) {
|
|
gctl_error(req,
|
|
"Device %s is using one-time key, suspend not supported.",
|
|
sc->sc_name);
|
|
return;
|
|
}
|
|
|
|
mtx_lock(&sc->sc_queue_mtx);
|
|
if (sc->sc_flags & G_ELI_FLAG_SUSPEND) {
|
|
mtx_unlock(&sc->sc_queue_mtx);
|
|
gctl_error(req, "Device %s already suspended.",
|
|
sc->sc_name);
|
|
return;
|
|
}
|
|
sc->sc_flags |= G_ELI_FLAG_SUSPEND;
|
|
wakeup(sc);
|
|
for (;;) {
|
|
LIST_FOREACH(wr, &sc->sc_workers, w_next) {
|
|
if (wr->w_active)
|
|
break;
|
|
}
|
|
if (wr == NULL)
|
|
break;
|
|
/* Not all threads suspended. */
|
|
msleep(&sc->sc_workers, &sc->sc_queue_mtx, PRIBIO,
|
|
"geli:suspend", 0);
|
|
}
|
|
/*
|
|
* Clear sensitive data on suspend, they will be recovered on resume.
|
|
*/
|
|
explicit_bzero(sc->sc_mkey, sizeof(sc->sc_mkey));
|
|
g_eli_key_destroy(sc);
|
|
explicit_bzero(sc->sc_akey, sizeof(sc->sc_akey));
|
|
explicit_bzero(&sc->sc_akeyctx, sizeof(sc->sc_akeyctx));
|
|
explicit_bzero(sc->sc_ivkey, sizeof(sc->sc_ivkey));
|
|
explicit_bzero(&sc->sc_ivctx, sizeof(sc->sc_ivctx));
|
|
mtx_unlock(&sc->sc_queue_mtx);
|
|
G_ELI_DEBUG(0, "Device %s has been suspended.", sc->sc_name);
|
|
}
|
|
|
|
static void
|
|
g_eli_ctl_suspend(struct gctl_req *req, struct g_class *mp)
|
|
{
|
|
struct g_eli_softc *sc;
|
|
int *all, *nargs;
|
|
|
|
g_topology_assert();
|
|
|
|
nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
|
|
if (nargs == NULL) {
|
|
gctl_error(req, "No '%s' argument.", "nargs");
|
|
return;
|
|
}
|
|
all = gctl_get_paraml(req, "all", sizeof(*all));
|
|
if (all == NULL) {
|
|
gctl_error(req, "No '%s' argument.", "all");
|
|
return;
|
|
}
|
|
if (!*all && *nargs == 0) {
|
|
gctl_error(req, "Too few arguments.");
|
|
return;
|
|
}
|
|
|
|
if (*all) {
|
|
struct g_geom *gp, *gp2;
|
|
|
|
LIST_FOREACH_SAFE(gp, &mp->geom, geom, gp2) {
|
|
sc = gp->softc;
|
|
if (sc->sc_flags & G_ELI_FLAG_ONETIME) {
|
|
G_ELI_DEBUG(0,
|
|
"Device %s is using one-time key, suspend not supported, skipping.",
|
|
sc->sc_name);
|
|
continue;
|
|
}
|
|
g_eli_suspend_one(sc, req);
|
|
}
|
|
} else {
|
|
const char *prov;
|
|
char param[16];
|
|
int i;
|
|
|
|
for (i = 0; i < *nargs; i++) {
|
|
snprintf(param, sizeof(param), "arg%d", i);
|
|
prov = gctl_get_asciiparam(req, param);
|
|
if (prov == NULL) {
|
|
G_ELI_DEBUG(0, "No 'arg%d' argument.", i);
|
|
continue;
|
|
}
|
|
|
|
sc = g_eli_find_device(mp, prov);
|
|
if (sc == NULL) {
|
|
G_ELI_DEBUG(0, "No such provider: %s.", prov);
|
|
continue;
|
|
}
|
|
g_eli_suspend_one(sc, req);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
g_eli_ctl_resume(struct gctl_req *req, struct g_class *mp)
|
|
{
|
|
struct g_eli_metadata md;
|
|
struct g_eli_softc *sc;
|
|
struct g_provider *pp;
|
|
struct g_consumer *cp;
|
|
const char *name;
|
|
u_char *key, mkey[G_ELI_DATAIVKEYLEN];
|
|
int *nargs, keysize, error;
|
|
u_int nkey;
|
|
|
|
g_topology_assert();
|
|
|
|
nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
|
|
if (nargs == NULL) {
|
|
gctl_error(req, "No '%s' argument.", "nargs");
|
|
return;
|
|
}
|
|
if (*nargs != 1) {
|
|
gctl_error(req, "Invalid number of arguments.");
|
|
return;
|
|
}
|
|
|
|
name = gctl_get_asciiparam(req, "arg0");
|
|
if (name == NULL) {
|
|
gctl_error(req, "No 'arg%u' argument.", 0);
|
|
return;
|
|
}
|
|
key = gctl_get_param(req, "key", &keysize);
|
|
if (key == NULL || keysize != G_ELI_USERKEYLEN) {
|
|
gctl_error(req, "No '%s' argument.", "key");
|
|
return;
|
|
}
|
|
sc = g_eli_find_device(mp, name);
|
|
if (sc == NULL) {
|
|
gctl_error(req, "Provider %s is invalid.", name);
|
|
return;
|
|
}
|
|
cp = LIST_FIRST(&sc->sc_geom->consumer);
|
|
pp = cp->provider;
|
|
error = g_eli_read_metadata(mp, pp, &md);
|
|
if (error != 0) {
|
|
gctl_error(req, "Cannot read metadata from %s (error=%d).",
|
|
name, error);
|
|
return;
|
|
}
|
|
if (md.md_keys == 0x00) {
|
|
explicit_bzero(&md, sizeof(md));
|
|
gctl_error(req, "No valid keys on %s.", pp->name);
|
|
return;
|
|
}
|
|
|
|
error = g_eli_mkey_decrypt_any(&md, key, mkey, &nkey);
|
|
explicit_bzero(key, keysize);
|
|
if (error == -1) {
|
|
explicit_bzero(&md, sizeof(md));
|
|
gctl_error(req, "Wrong key for %s.", pp->name);
|
|
return;
|
|
} else if (error > 0) {
|
|
explicit_bzero(&md, sizeof(md));
|
|
gctl_error(req, "Cannot decrypt Master Key for %s (error=%d).",
|
|
pp->name, error);
|
|
return;
|
|
}
|
|
G_ELI_DEBUG(1, "Using Master Key %u for %s.", nkey, pp->name);
|
|
|
|
mtx_lock(&sc->sc_queue_mtx);
|
|
if (!(sc->sc_flags & G_ELI_FLAG_SUSPEND))
|
|
gctl_error(req, "Device %s is not suspended.", name);
|
|
else {
|
|
/* Restore sc_mkey, sc_ekeys, sc_akey and sc_ivkey. */
|
|
g_eli_mkey_propagate(sc, mkey);
|
|
sc->sc_flags &= ~G_ELI_FLAG_SUSPEND;
|
|
G_ELI_DEBUG(1, "Resumed %s.", pp->name);
|
|
wakeup(sc);
|
|
}
|
|
mtx_unlock(&sc->sc_queue_mtx);
|
|
explicit_bzero(mkey, sizeof(mkey));
|
|
explicit_bzero(&md, sizeof(md));
|
|
}
|
|
|
|
static int
|
|
g_eli_kill_one(struct g_eli_softc *sc)
|
|
{
|
|
struct g_provider *pp;
|
|
struct g_consumer *cp;
|
|
int error = 0;
|
|
|
|
g_topology_assert();
|
|
|
|
if (sc == NULL)
|
|
return (ENOENT);
|
|
|
|
pp = LIST_FIRST(&sc->sc_geom->provider);
|
|
g_error_provider(pp, ENXIO);
|
|
|
|
cp = LIST_FIRST(&sc->sc_geom->consumer);
|
|
pp = cp->provider;
|
|
|
|
if (sc->sc_flags & G_ELI_FLAG_RO) {
|
|
G_ELI_DEBUG(0, "WARNING: Metadata won't be erased on read-only "
|
|
"provider: %s.", pp->name);
|
|
} else {
|
|
u_char *sector;
|
|
u_int i;
|
|
int err;
|
|
|
|
sector = malloc(pp->sectorsize, M_ELI, M_WAITOK);
|
|
for (i = 0; i <= g_eli_overwrites; i++) {
|
|
if (i == g_eli_overwrites)
|
|
bzero(sector, pp->sectorsize);
|
|
else
|
|
arc4rand(sector, pp->sectorsize, 0);
|
|
err = g_write_data(cp, pp->mediasize - pp->sectorsize,
|
|
sector, pp->sectorsize);
|
|
if (err != 0) {
|
|
G_ELI_DEBUG(0, "Cannot erase metadata on %s "
|
|
"(error=%d).", pp->name, err);
|
|
if (error == 0)
|
|
error = err;
|
|
}
|
|
/*
|
|
* Flush write cache so we don't overwrite data N times
|
|
* in cache and only once on disk.
|
|
*/
|
|
(void)g_io_flush(cp);
|
|
}
|
|
free(sector, M_ELI);
|
|
}
|
|
if (error == 0)
|
|
G_ELI_DEBUG(0, "%s has been killed.", pp->name);
|
|
g_eli_destroy(sc, TRUE);
|
|
return (error);
|
|
}
|
|
|
|
static void
|
|
g_eli_ctl_kill(struct gctl_req *req, struct g_class *mp)
|
|
{
|
|
int *all, *nargs;
|
|
int error;
|
|
|
|
g_topology_assert();
|
|
|
|
nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
|
|
if (nargs == NULL) {
|
|
gctl_error(req, "No '%s' argument.", "nargs");
|
|
return;
|
|
}
|
|
all = gctl_get_paraml(req, "all", sizeof(*all));
|
|
if (all == NULL) {
|
|
gctl_error(req, "No '%s' argument.", "all");
|
|
return;
|
|
}
|
|
if (!*all && *nargs == 0) {
|
|
gctl_error(req, "Too few arguments.");
|
|
return;
|
|
}
|
|
|
|
if (*all) {
|
|
struct g_geom *gp, *gp2;
|
|
|
|
LIST_FOREACH_SAFE(gp, &mp->geom, geom, gp2) {
|
|
error = g_eli_kill_one(gp->softc);
|
|
if (error != 0)
|
|
gctl_error(req, "Not fully done.");
|
|
}
|
|
} else {
|
|
struct g_eli_softc *sc;
|
|
const char *prov;
|
|
char param[16];
|
|
int i;
|
|
|
|
for (i = 0; i < *nargs; i++) {
|
|
snprintf(param, sizeof(param), "arg%d", i);
|
|
prov = gctl_get_asciiparam(req, param);
|
|
if (prov == NULL) {
|
|
G_ELI_DEBUG(0, "No 'arg%d' argument.", i);
|
|
continue;
|
|
}
|
|
|
|
sc = g_eli_find_device(mp, prov);
|
|
if (sc == NULL) {
|
|
G_ELI_DEBUG(0, "No such provider: %s.", prov);
|
|
continue;
|
|
}
|
|
error = g_eli_kill_one(sc);
|
|
if (error != 0)
|
|
gctl_error(req, "Not fully done.");
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
g_eli_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;
|
|
}
|
|
while (*version != G_ELI_VERSION) {
|
|
if (G_ELI_VERSION == G_ELI_VERSION_06 &&
|
|
*version == G_ELI_VERSION_05) {
|
|
/* Compatible. */
|
|
break;
|
|
}
|
|
if (G_ELI_VERSION == G_ELI_VERSION_07 &&
|
|
(*version == G_ELI_VERSION_05 ||
|
|
*version == G_ELI_VERSION_06)) {
|
|
/* Compatible. */
|
|
break;
|
|
}
|
|
gctl_error(req, "Userland and kernel parts are out of sync.");
|
|
return;
|
|
}
|
|
|
|
if (strcmp(verb, "attach") == 0)
|
|
g_eli_ctl_attach(req, mp);
|
|
else if (strcmp(verb, "detach") == 0 || strcmp(verb, "stop") == 0)
|
|
g_eli_ctl_detach(req, mp);
|
|
else if (strcmp(verb, "onetime") == 0)
|
|
g_eli_ctl_onetime(req, mp);
|
|
else if (strcmp(verb, "configure") == 0)
|
|
g_eli_ctl_configure(req, mp);
|
|
else if (strcmp(verb, "setkey") == 0)
|
|
g_eli_ctl_setkey(req, mp);
|
|
else if (strcmp(verb, "delkey") == 0)
|
|
g_eli_ctl_delkey(req, mp);
|
|
else if (strcmp(verb, "suspend") == 0)
|
|
g_eli_ctl_suspend(req, mp);
|
|
else if (strcmp(verb, "resume") == 0)
|
|
g_eli_ctl_resume(req, mp);
|
|
else if (strcmp(verb, "kill") == 0)
|
|
g_eli_ctl_kill(req, mp);
|
|
else
|
|
gctl_error(req, "Unknown verb.");
|
|
}
|