xref: /freebsd/sys/geom/eli/g_eli.c (revision 0bab7fa8a72a0deea00c99fe7cd77ff20bdbb1c3)
1c58794deSPawel Jakub Dawidek /*-
23728855aSPedro F. Giffuni  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
33728855aSPedro F. Giffuni  *
41e09ff3dSPawel Jakub Dawidek  * Copyright (c) 2005-2011 Pawel Jakub Dawidek <pawel@dawidek.net>
5c58794deSPawel Jakub Dawidek  * All rights reserved.
6c58794deSPawel Jakub Dawidek  *
7c58794deSPawel Jakub Dawidek  * Redistribution and use in source and binary forms, with or without
8c58794deSPawel Jakub Dawidek  * modification, are permitted provided that the following conditions
9c58794deSPawel Jakub Dawidek  * are met:
10c58794deSPawel Jakub Dawidek  * 1. Redistributions of source code must retain the above copyright
11c58794deSPawel Jakub Dawidek  *    notice, this list of conditions and the following disclaimer.
12c58794deSPawel Jakub Dawidek  * 2. Redistributions in binary form must reproduce the above copyright
13c58794deSPawel Jakub Dawidek  *    notice, this list of conditions and the following disclaimer in the
14c58794deSPawel Jakub Dawidek  *    documentation and/or other materials provided with the distribution.
15c58794deSPawel Jakub Dawidek  *
16c58794deSPawel Jakub Dawidek  * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
17c58794deSPawel Jakub Dawidek  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18c58794deSPawel Jakub Dawidek  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19c58794deSPawel Jakub Dawidek  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
20c58794deSPawel Jakub Dawidek  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21c58794deSPawel Jakub Dawidek  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22c58794deSPawel Jakub Dawidek  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23c58794deSPawel Jakub Dawidek  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24c58794deSPawel Jakub Dawidek  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25c58794deSPawel Jakub Dawidek  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26c58794deSPawel Jakub Dawidek  * SUCH DAMAGE.
27c58794deSPawel Jakub Dawidek  */
28c58794deSPawel Jakub Dawidek 
29c58794deSPawel Jakub Dawidek #include <sys/cdefs.h>
30c58794deSPawel Jakub Dawidek __FBSDID("$FreeBSD$");
31c58794deSPawel Jakub Dawidek 
32c58794deSPawel Jakub Dawidek #include <sys/param.h>
33c58794deSPawel Jakub Dawidek #include <sys/systm.h>
34f6ce353eSAndriy Gapon #include <sys/cons.h>
35c58794deSPawel Jakub Dawidek #include <sys/kernel.h>
369af2131bSPawel Jakub Dawidek #include <sys/linker.h>
37c58794deSPawel Jakub Dawidek #include <sys/module.h>
38c58794deSPawel Jakub Dawidek #include <sys/lock.h>
39c58794deSPawel Jakub Dawidek #include <sys/mutex.h>
40c58794deSPawel Jakub Dawidek #include <sys/bio.h>
415d807a0eSAndrey V. Elsukov #include <sys/sbuf.h>
42c58794deSPawel Jakub Dawidek #include <sys/sysctl.h>
43c58794deSPawel Jakub Dawidek #include <sys/malloc.h>
44c5d387d0SPawel Jakub Dawidek #include <sys/eventhandler.h>
45c58794deSPawel Jakub Dawidek #include <sys/kthread.h>
46c58794deSPawel Jakub Dawidek #include <sys/proc.h>
47c58794deSPawel Jakub Dawidek #include <sys/sched.h>
48dd549194SPawel Jakub Dawidek #include <sys/smp.h>
49c58794deSPawel Jakub Dawidek #include <sys/uio.h>
50a80f82a4SPawel Jakub Dawidek #include <sys/vnode.h>
51c58794deSPawel Jakub Dawidek 
52c58794deSPawel Jakub Dawidek #include <vm/uma.h>
53c58794deSPawel Jakub Dawidek 
54c58794deSPawel Jakub Dawidek #include <geom/geom.h>
55c58794deSPawel Jakub Dawidek #include <geom/eli/g_eli.h>
56c58794deSPawel Jakub Dawidek #include <geom/eli/pkcs5v2.h>
57c58794deSPawel Jakub Dawidek 
58ec5c0e5bSAllan Jude #include <crypto/intake.h>
59ec5c0e5bSAllan Jude 
60cb08c2ccSAlexander Leidinger FEATURE(geom_eli, "GEOM crypto module");
61c58794deSPawel Jakub Dawidek 
62c58794deSPawel Jakub Dawidek MALLOC_DEFINE(M_ELI, "eli data", "GEOM_ELI Data");
63c58794deSPawel Jakub Dawidek 
64c58794deSPawel Jakub Dawidek SYSCTL_DECL(_kern_geom);
65c58794deSPawel Jakub Dawidek SYSCTL_NODE(_kern_geom, OID_AUTO, eli, CTLFLAG_RW, 0, "GEOM_ELI stuff");
66a1f4a8c4SPawel Jakub Dawidek static int g_eli_version = G_ELI_VERSION;
67a1f4a8c4SPawel Jakub Dawidek SYSCTL_INT(_kern_geom_eli, OID_AUTO, version, CTLFLAG_RD, &g_eli_version, 0,
68a1f4a8c4SPawel Jakub Dawidek     "GELI version");
69f95168e0SPawel Jakub Dawidek int g_eli_debug = 0;
70af3b2549SHans Petter Selasky SYSCTL_INT(_kern_geom_eli, OID_AUTO, debug, CTLFLAG_RWTUN, &g_eli_debug, 0,
71c58794deSPawel Jakub Dawidek     "Debug level");
72c58794deSPawel Jakub Dawidek static u_int g_eli_tries = 3;
73af3b2549SHans Petter Selasky SYSCTL_UINT(_kern_geom_eli, OID_AUTO, tries, CTLFLAG_RWTUN, &g_eli_tries, 0,
7498645006SChristian Brueffer     "Number of tries for entering the passphrase");
75eb4c31fdSEd Schouten static u_int g_eli_visible_passphrase = GETS_NOECHO;
76af3b2549SHans Petter Selasky SYSCTL_UINT(_kern_geom_eli, OID_AUTO, visible_passphrase, CTLFLAG_RWTUN,
77c58794deSPawel Jakub Dawidek     &g_eli_visible_passphrase, 0,
78eb4c31fdSEd Schouten     "Visibility of passphrase prompt (0 = invisible, 1 = visible, 2 = asterisk)");
79b35bfe7eSPawel Jakub Dawidek u_int g_eli_overwrites = G_ELI_OVERWRITES;
80af3b2549SHans Petter Selasky SYSCTL_UINT(_kern_geom_eli, OID_AUTO, overwrites, CTLFLAG_RWTUN, &g_eli_overwrites,
8198645006SChristian Brueffer     0, "Number of times on-disk keys should be overwritten when destroying them");
82dd549194SPawel Jakub Dawidek static u_int g_eli_threads = 0;
83af3b2549SHans Petter Selasky SYSCTL_UINT(_kern_geom_eli, OID_AUTO, threads, CTLFLAG_RWTUN, &g_eli_threads, 0,
84c58794deSPawel Jakub Dawidek     "Number of threads doing crypto work");
85eaa3b919SPawel Jakub Dawidek u_int g_eli_batch = 0;
86af3b2549SHans Petter Selasky SYSCTL_UINT(_kern_geom_eli, OID_AUTO, batch, CTLFLAG_RWTUN, &g_eli_batch, 0,
87eaa3b919SPawel Jakub Dawidek     "Use crypto operations batching");
88c58794deSPawel Jakub Dawidek 
89835c4dd4SColin Percival /*
90835c4dd4SColin Percival  * Passphrase cached during boot, in order to be more user-friendly if
91835c4dd4SColin Percival  * there are multiple providers using the same passphrase.
92835c4dd4SColin Percival  */
93835c4dd4SColin Percival static char cached_passphrase[256];
94835c4dd4SColin Percival static u_int g_eli_boot_passcache = 1;
95835c4dd4SColin Percival TUNABLE_INT("kern.geom.eli.boot_passcache", &g_eli_boot_passcache);
96835c4dd4SColin Percival SYSCTL_UINT(_kern_geom_eli, OID_AUTO, boot_passcache, CTLFLAG_RD,
97835c4dd4SColin Percival     &g_eli_boot_passcache, 0,
98835c4dd4SColin Percival     "Passphrases are cached during boot process for possible reuse");
99835c4dd4SColin Percival static void
10066427784SColin Percival fetch_loader_passphrase(void * dummy)
10166427784SColin Percival {
10266427784SColin Percival 	char * env_passphrase;
10366427784SColin Percival 
10466427784SColin Percival 	KASSERT(dynamic_kenv, ("need dynamic kenv"));
10566427784SColin Percival 
10666427784SColin Percival 	if ((env_passphrase = kern_getenv("kern.geom.eli.passphrase")) != NULL) {
10766427784SColin Percival 		/* Extract passphrase from the environment. */
10866427784SColin Percival 		strlcpy(cached_passphrase, env_passphrase,
10966427784SColin Percival 		    sizeof(cached_passphrase));
11066427784SColin Percival 		freeenv(env_passphrase);
11166427784SColin Percival 
11266427784SColin Percival 		/* Wipe the passphrase from the environment. */
11366427784SColin Percival 		kern_unsetenv("kern.geom.eli.passphrase");
11466427784SColin Percival 	}
11566427784SColin Percival }
11666427784SColin Percival SYSINIT(geli_fetch_loader_passphrase, SI_SUB_KMEM + 1, SI_ORDER_ANY,
11766427784SColin Percival     fetch_loader_passphrase, NULL);
118ec5c0e5bSAllan Jude 
11966427784SColin Percival static void
120ec5c0e5bSAllan Jude zero_boot_passcache(void)
121835c4dd4SColin Percival {
122835c4dd4SColin Percival 
123ec5c0e5bSAllan Jude         explicit_bzero(cached_passphrase, sizeof(cached_passphrase));
124835c4dd4SColin Percival }
125ec5c0e5bSAllan Jude 
126ec5c0e5bSAllan Jude static void
127ec5c0e5bSAllan Jude zero_geli_intake_keys(void)
128ec5c0e5bSAllan Jude {
129ec5c0e5bSAllan Jude         struct keybuf *keybuf;
130ec5c0e5bSAllan Jude         int i;
131ec5c0e5bSAllan Jude 
132ec5c0e5bSAllan Jude         if ((keybuf = get_keybuf()) != NULL) {
133ec5c0e5bSAllan Jude                 /* Scan the key buffer, clear all GELI keys. */
134ec5c0e5bSAllan Jude                 for (i = 0; i < keybuf->kb_nents; i++) {
135ec5c0e5bSAllan Jude                          if (keybuf->kb_ents[i].ke_type == KEYBUF_TYPE_GELI) {
136ec5c0e5bSAllan Jude                                  explicit_bzero(keybuf->kb_ents[i].ke_data,
137ec5c0e5bSAllan Jude                                      sizeof(keybuf->kb_ents[i].ke_data));
138ec5c0e5bSAllan Jude                                  keybuf->kb_ents[i].ke_type = KEYBUF_TYPE_NONE;
139ec5c0e5bSAllan Jude                          }
140ec5c0e5bSAllan Jude                 }
141ec5c0e5bSAllan Jude         }
142ec5c0e5bSAllan Jude }
143ec5c0e5bSAllan Jude 
144ec5c0e5bSAllan Jude static void
145ec5c0e5bSAllan Jude zero_intake_passcache(void *dummy)
146ec5c0e5bSAllan Jude {
147ec5c0e5bSAllan Jude         zero_boot_passcache();
148ec5c0e5bSAllan Jude         zero_geli_intake_keys();
149ec5c0e5bSAllan Jude }
150ec5c0e5bSAllan Jude EVENTHANDLER_DEFINE(mountroot, zero_intake_passcache, NULL, 0);
151835c4dd4SColin Percival 
152c5d387d0SPawel Jakub Dawidek static eventhandler_tag g_eli_pre_sync = NULL;
153c5d387d0SPawel Jakub Dawidek 
154c58794deSPawel Jakub Dawidek static int g_eli_destroy_geom(struct gctl_req *req, struct g_class *mp,
155c58794deSPawel Jakub Dawidek     struct g_geom *gp);
156c5d387d0SPawel Jakub Dawidek static void g_eli_init(struct g_class *mp);
157c5d387d0SPawel Jakub Dawidek static void g_eli_fini(struct g_class *mp);
158c58794deSPawel Jakub Dawidek 
159c58794deSPawel Jakub Dawidek static g_taste_t g_eli_taste;
160c58794deSPawel Jakub Dawidek static g_dumpconf_t g_eli_dumpconf;
161c58794deSPawel Jakub Dawidek 
162c58794deSPawel Jakub Dawidek struct g_class g_eli_class = {
163c58794deSPawel Jakub Dawidek 	.name = G_ELI_CLASS_NAME,
164c58794deSPawel Jakub Dawidek 	.version = G_VERSION,
165c58794deSPawel Jakub Dawidek 	.ctlreq = g_eli_config,
166c58794deSPawel Jakub Dawidek 	.taste = g_eli_taste,
167c5d387d0SPawel Jakub Dawidek 	.destroy_geom = g_eli_destroy_geom,
168c5d387d0SPawel Jakub Dawidek 	.init = g_eli_init,
169c5d387d0SPawel Jakub Dawidek 	.fini = g_eli_fini
170c58794deSPawel Jakub Dawidek };
171c58794deSPawel Jakub Dawidek 
172c58794deSPawel Jakub Dawidek 
173c58794deSPawel Jakub Dawidek /*
174c58794deSPawel Jakub Dawidek  * Code paths:
175c58794deSPawel Jakub Dawidek  * BIO_READ:
1765ad4a7c7SPawel Jakub Dawidek  *	g_eli_start -> g_eli_crypto_read -> g_io_request -> g_eli_read_done -> g_eli_crypto_run -> g_eli_crypto_read_done -> g_io_deliver
177c58794deSPawel Jakub Dawidek  * BIO_WRITE:
178c58794deSPawel Jakub Dawidek  *	g_eli_start -> g_eli_crypto_run -> g_eli_crypto_write_done -> g_io_request -> g_eli_write_done -> g_io_deliver
179c58794deSPawel Jakub Dawidek  */
180c58794deSPawel Jakub Dawidek 
181c58794deSPawel Jakub Dawidek 
182c58794deSPawel Jakub Dawidek /*
183c58794deSPawel Jakub Dawidek  * EAGAIN from crypto(9) means, that we were probably balanced to another crypto
184c58794deSPawel Jakub Dawidek  * accelerator or something like this.
185c58794deSPawel Jakub Dawidek  * The function updates the SID and rerun the operation.
186c58794deSPawel Jakub Dawidek  */
187eaa3b919SPawel Jakub Dawidek int
188c58794deSPawel Jakub Dawidek g_eli_crypto_rerun(struct cryptop *crp)
189c58794deSPawel Jakub Dawidek {
190c58794deSPawel Jakub Dawidek 	struct g_eli_softc *sc;
191c58794deSPawel Jakub Dawidek 	struct g_eli_worker *wr;
192c58794deSPawel Jakub Dawidek 	struct bio *bp;
193c58794deSPawel Jakub Dawidek 	int error;
194c58794deSPawel Jakub Dawidek 
195c58794deSPawel Jakub Dawidek 	bp = (struct bio *)crp->crp_opaque;
196c58794deSPawel Jakub Dawidek 	sc = bp->bio_to->geom->softc;
197c58794deSPawel Jakub Dawidek 	LIST_FOREACH(wr, &sc->sc_workers, w_next) {
198c58794deSPawel Jakub Dawidek 		if (wr->w_number == bp->bio_pflags)
199c58794deSPawel Jakub Dawidek 			break;
200c58794deSPawel Jakub Dawidek 	}
201c58794deSPawel Jakub Dawidek 	KASSERT(wr != NULL, ("Invalid worker (%u).", bp->bio_pflags));
20298645006SChristian Brueffer 	G_ELI_DEBUG(1, "Rerunning crypto %s request (sid: %ju -> %ju).",
203c58794deSPawel Jakub Dawidek 	    bp->bio_cmd == BIO_READ ? "READ" : "WRITE", (uintmax_t)wr->w_sid,
204c58794deSPawel Jakub Dawidek 	    (uintmax_t)crp->crp_sid);
205c58794deSPawel Jakub Dawidek 	wr->w_sid = crp->crp_sid;
206c58794deSPawel Jakub Dawidek 	crp->crp_etype = 0;
207c58794deSPawel Jakub Dawidek 	error = crypto_dispatch(crp);
208c58794deSPawel Jakub Dawidek 	if (error == 0)
209c58794deSPawel Jakub Dawidek 		return (0);
210c58794deSPawel Jakub Dawidek 	G_ELI_DEBUG(1, "%s: crypto_dispatch() returned %d.", __func__, error);
211c58794deSPawel Jakub Dawidek 	crp->crp_etype = error;
212c58794deSPawel Jakub Dawidek 	return (error);
213c58794deSPawel Jakub Dawidek }
214c58794deSPawel Jakub Dawidek 
215*0bab7fa8SAlan Somers static void
216*0bab7fa8SAlan Somers g_eli_getattr_done(struct bio *bp)
217*0bab7fa8SAlan Somers {
218*0bab7fa8SAlan Somers 	if (bp->bio_error == 0 &&
219*0bab7fa8SAlan Somers 	    !strcmp(bp->bio_attribute, "GEOM::physpath")) {
220*0bab7fa8SAlan Somers 		strlcat(bp->bio_data, "/eli", bp->bio_length);
221*0bab7fa8SAlan Somers 	}
222*0bab7fa8SAlan Somers 	g_std_done(bp);
223*0bab7fa8SAlan Somers }
224*0bab7fa8SAlan Somers 
225c58794deSPawel Jakub Dawidek /*
226c58794deSPawel Jakub Dawidek  * The function is called afer reading encrypted data from the provider.
227bb30fea6SPawel Jakub Dawidek  *
2285ad4a7c7SPawel Jakub Dawidek  * g_eli_start -> g_eli_crypto_read -> g_io_request -> G_ELI_READ_DONE -> g_eli_crypto_run -> g_eli_crypto_read_done -> g_io_deliver
229c58794deSPawel Jakub Dawidek  */
230eaa3b919SPawel Jakub Dawidek void
231c58794deSPawel Jakub Dawidek g_eli_read_done(struct bio *bp)
232c58794deSPawel Jakub Dawidek {
233c58794deSPawel Jakub Dawidek 	struct g_eli_softc *sc;
234c58794deSPawel Jakub Dawidek 	struct bio *pbp;
235c58794deSPawel Jakub Dawidek 
236c58794deSPawel Jakub Dawidek 	G_ELI_LOGREQ(2, bp, "Request done.");
237c58794deSPawel Jakub Dawidek 	pbp = bp->bio_parent;
2382dc7e36bSSteven Hartland 	if (pbp->bio_error == 0 && bp->bio_error != 0)
239c58794deSPawel Jakub Dawidek 		pbp->bio_error = bp->bio_error;
24090574b0aSMikolaj Golub 	g_destroy_bio(bp);
241eaa3b919SPawel Jakub Dawidek 	/*
242eaa3b919SPawel Jakub Dawidek 	 * Do we have all sectors already?
243eaa3b919SPawel Jakub Dawidek 	 */
244eaa3b919SPawel Jakub Dawidek 	pbp->bio_inbed++;
245eaa3b919SPawel Jakub Dawidek 	if (pbp->bio_inbed < pbp->bio_children)
246eaa3b919SPawel Jakub Dawidek 		return;
2475ad4a7c7SPawel Jakub Dawidek 	sc = pbp->bio_to->geom->softc;
248c58794deSPawel Jakub Dawidek 	if (pbp->bio_error != 0) {
2492dc7e36bSSteven Hartland 		G_ELI_LOGREQ(0, pbp, "%s() failed (error=%d)", __func__,
2502dc7e36bSSteven Hartland 		    pbp->bio_error);
251c58794deSPawel Jakub Dawidek 		pbp->bio_completed = 0;
252eaa3b919SPawel Jakub Dawidek 		if (pbp->bio_driver2 != NULL) {
253eaa3b919SPawel Jakub Dawidek 			free(pbp->bio_driver2, M_ELI);
254eaa3b919SPawel Jakub Dawidek 			pbp->bio_driver2 = NULL;
255eaa3b919SPawel Jakub Dawidek 		}
256c58794deSPawel Jakub Dawidek 		g_io_deliver(pbp, pbp->bio_error);
2575ad4a7c7SPawel Jakub Dawidek 		atomic_subtract_int(&sc->sc_inflight, 1);
258c58794deSPawel Jakub Dawidek 		return;
259c58794deSPawel Jakub Dawidek 	}
260c58794deSPawel Jakub Dawidek 	mtx_lock(&sc->sc_queue_mtx);
261c58794deSPawel Jakub Dawidek 	bioq_insert_tail(&sc->sc_queue, pbp);
262c58794deSPawel Jakub Dawidek 	mtx_unlock(&sc->sc_queue_mtx);
263c58794deSPawel Jakub Dawidek 	wakeup(sc);
264c58794deSPawel Jakub Dawidek }
265c58794deSPawel Jakub Dawidek 
266c58794deSPawel Jakub Dawidek /*
267c58794deSPawel Jakub Dawidek  * The function is called after we encrypt and write data.
268bb30fea6SPawel Jakub Dawidek  *
269bb30fea6SPawel Jakub Dawidek  * g_eli_start -> g_eli_crypto_run -> g_eli_crypto_write_done -> g_io_request -> G_ELI_WRITE_DONE -> g_io_deliver
270c58794deSPawel Jakub Dawidek  */
271eaa3b919SPawel Jakub Dawidek void
272c58794deSPawel Jakub Dawidek g_eli_write_done(struct bio *bp)
273c58794deSPawel Jakub Dawidek {
2745ad4a7c7SPawel Jakub Dawidek 	struct g_eli_softc *sc;
275c58794deSPawel Jakub Dawidek 	struct bio *pbp;
276c58794deSPawel Jakub Dawidek 
277c58794deSPawel Jakub Dawidek 	G_ELI_LOGREQ(2, bp, "Request done.");
278c58794deSPawel Jakub Dawidek 	pbp = bp->bio_parent;
2792dc7e36bSSteven Hartland 	if (pbp->bio_error == 0 && bp->bio_error != 0)
280c58794deSPawel Jakub Dawidek 		pbp->bio_error = bp->bio_error;
28190574b0aSMikolaj Golub 	g_destroy_bio(bp);
282eaa3b919SPawel Jakub Dawidek 	/*
283eaa3b919SPawel Jakub Dawidek 	 * Do we have all sectors already?
284eaa3b919SPawel Jakub Dawidek 	 */
285eaa3b919SPawel Jakub Dawidek 	pbp->bio_inbed++;
286eaa3b919SPawel Jakub Dawidek 	if (pbp->bio_inbed < pbp->bio_children)
287eaa3b919SPawel Jakub Dawidek 		return;
288c58794deSPawel Jakub Dawidek 	free(pbp->bio_driver2, M_ELI);
289c58794deSPawel Jakub Dawidek 	pbp->bio_driver2 = NULL;
290eaa3b919SPawel Jakub Dawidek 	if (pbp->bio_error != 0) {
2912dc7e36bSSteven Hartland 		G_ELI_LOGREQ(0, pbp, "%s() failed (error=%d)", __func__,
292c58794deSPawel Jakub Dawidek 		    pbp->bio_error);
293c58794deSPawel Jakub Dawidek 		pbp->bio_completed = 0;
2942dc7e36bSSteven Hartland 	} else
2952dc7e36bSSteven Hartland 		pbp->bio_completed = pbp->bio_length;
2962dc7e36bSSteven Hartland 
297c58794deSPawel Jakub Dawidek 	/*
298c58794deSPawel Jakub Dawidek 	 * Write is finished, send it up.
299c58794deSPawel Jakub Dawidek 	 */
3005ad4a7c7SPawel Jakub Dawidek 	sc = pbp->bio_to->geom->softc;
301c58794deSPawel Jakub Dawidek 	g_io_deliver(pbp, pbp->bio_error);
3025ad4a7c7SPawel Jakub Dawidek 	atomic_subtract_int(&sc->sc_inflight, 1);
303c58794deSPawel Jakub Dawidek }
304c58794deSPawel Jakub Dawidek 
305c58794deSPawel Jakub Dawidek /*
306c58794deSPawel Jakub Dawidek  * This function should never be called, but GEOM made as it set ->orphan()
307c58794deSPawel Jakub Dawidek  * method for every geom.
308c58794deSPawel Jakub Dawidek  */
309c58794deSPawel Jakub Dawidek static void
310c58794deSPawel Jakub Dawidek g_eli_orphan_spoil_assert(struct g_consumer *cp)
311c58794deSPawel Jakub Dawidek {
312c58794deSPawel Jakub Dawidek 
313c58794deSPawel Jakub Dawidek 	panic("Function %s() called for %s.", __func__, cp->geom->name);
314c58794deSPawel Jakub Dawidek }
315c58794deSPawel Jakub Dawidek 
316c58794deSPawel Jakub Dawidek static void
317c58794deSPawel Jakub Dawidek g_eli_orphan(struct g_consumer *cp)
318c58794deSPawel Jakub Dawidek {
319c58794deSPawel Jakub Dawidek 	struct g_eli_softc *sc;
320c58794deSPawel Jakub Dawidek 
321c58794deSPawel Jakub Dawidek 	g_topology_assert();
322c58794deSPawel Jakub Dawidek 	sc = cp->geom->softc;
323c58794deSPawel Jakub Dawidek 	if (sc == NULL)
324c58794deSPawel Jakub Dawidek 		return;
3255ad4a7c7SPawel Jakub Dawidek 	g_eli_destroy(sc, TRUE);
326c58794deSPawel Jakub Dawidek }
327c58794deSPawel Jakub Dawidek 
328bb30fea6SPawel Jakub Dawidek /*
329056638c4SPawel Jakub Dawidek  * BIO_READ:
3305ad4a7c7SPawel Jakub Dawidek  *	G_ELI_START -> g_eli_crypto_read -> g_io_request -> g_eli_read_done -> g_eli_crypto_run -> g_eli_crypto_read_done -> g_io_deliver
331056638c4SPawel Jakub Dawidek  * BIO_WRITE:
332056638c4SPawel Jakub Dawidek  *	G_ELI_START -> g_eli_crypto_run -> g_eli_crypto_write_done -> g_io_request -> g_eli_write_done -> g_io_deliver
333bb30fea6SPawel Jakub Dawidek  */
334c58794deSPawel Jakub Dawidek static void
335c58794deSPawel Jakub Dawidek g_eli_start(struct bio *bp)
336c58794deSPawel Jakub Dawidek {
337c58794deSPawel Jakub Dawidek 	struct g_eli_softc *sc;
338d3a1be90SPawel Jakub Dawidek 	struct g_consumer *cp;
339c58794deSPawel Jakub Dawidek 	struct bio *cbp;
340c58794deSPawel Jakub Dawidek 
341c58794deSPawel Jakub Dawidek 	sc = bp->bio_to->geom->softc;
342c58794deSPawel Jakub Dawidek 	KASSERT(sc != NULL,
343c58794deSPawel Jakub Dawidek 	    ("Provider's error should be set (error=%d)(device=%s).",
344c58794deSPawel Jakub Dawidek 	    bp->bio_to->error, bp->bio_to->name));
345c58794deSPawel Jakub Dawidek 	G_ELI_LOGREQ(2, bp, "Request received.");
346c58794deSPawel Jakub Dawidek 
347c58794deSPawel Jakub Dawidek 	switch (bp->bio_cmd) {
348c58794deSPawel Jakub Dawidek 	case BIO_READ:
349c58794deSPawel Jakub Dawidek 	case BIO_WRITE:
350d3a1be90SPawel Jakub Dawidek 	case BIO_GETATTR:
35142461fbaSPawel Jakub Dawidek 	case BIO_FLUSH:
3529a6844d5SKenneth D. Merry 	case BIO_ZONE:
353c58794deSPawel Jakub Dawidek 		break;
354c58794deSPawel Jakub Dawidek 	case BIO_DELETE:
355c58794deSPawel Jakub Dawidek 		/*
35646e34470SPawel Jakub Dawidek 		 * If the user hasn't set the NODELETE flag, we just pass
35746e34470SPawel Jakub Dawidek 		 * it down the stack and let the layers beneath us do (or
35846e34470SPawel Jakub Dawidek 		 * not) whatever they do with it.  If they have, we
35946e34470SPawel Jakub Dawidek 		 * reject it.  A possible extension would be an
36046e34470SPawel Jakub Dawidek 		 * additional flag to take it as a hint to shred the data
36146e34470SPawel Jakub Dawidek 		 * with [multiple?] overwrites.
362c58794deSPawel Jakub Dawidek 		 */
36346e34470SPawel Jakub Dawidek 		if (!(sc->sc_flags & G_ELI_FLAG_NODELETE))
36446e34470SPawel Jakub Dawidek 			break;
365c58794deSPawel Jakub Dawidek 	default:
366c58794deSPawel Jakub Dawidek 		g_io_deliver(bp, EOPNOTSUPP);
367c58794deSPawel Jakub Dawidek 		return;
368c58794deSPawel Jakub Dawidek 	}
369c58794deSPawel Jakub Dawidek 	cbp = g_clone_bio(bp);
370c58794deSPawel Jakub Dawidek 	if (cbp == NULL) {
371c58794deSPawel Jakub Dawidek 		g_io_deliver(bp, ENOMEM);
372c58794deSPawel Jakub Dawidek 		return;
373c58794deSPawel Jakub Dawidek 	}
3745ad4a7c7SPawel Jakub Dawidek 	bp->bio_driver1 = cbp;
3755ad4a7c7SPawel Jakub Dawidek 	bp->bio_pflags = G_ELI_NEW_BIO;
376d3a1be90SPawel Jakub Dawidek 	switch (bp->bio_cmd) {
377d3a1be90SPawel Jakub Dawidek 	case BIO_READ:
378eaa3b919SPawel Jakub Dawidek 		if (!(sc->sc_flags & G_ELI_FLAG_AUTH)) {
3795ad4a7c7SPawel Jakub Dawidek 			g_eli_crypto_read(sc, bp, 0);
380d3a1be90SPawel Jakub Dawidek 			break;
381eaa3b919SPawel Jakub Dawidek 		}
382eaa3b919SPawel Jakub Dawidek 		/* FALLTHROUGH */
383d3a1be90SPawel Jakub Dawidek 	case BIO_WRITE:
384c58794deSPawel Jakub Dawidek 		mtx_lock(&sc->sc_queue_mtx);
385c58794deSPawel Jakub Dawidek 		bioq_insert_tail(&sc->sc_queue, bp);
386c58794deSPawel Jakub Dawidek 		mtx_unlock(&sc->sc_queue_mtx);
387c58794deSPawel Jakub Dawidek 		wakeup(sc);
388d3a1be90SPawel Jakub Dawidek 		break;
389d3a1be90SPawel Jakub Dawidek 	case BIO_GETATTR:
39042461fbaSPawel Jakub Dawidek 	case BIO_FLUSH:
39146e34470SPawel Jakub Dawidek 	case BIO_DELETE:
3929a6844d5SKenneth D. Merry 	case BIO_ZONE:
393*0bab7fa8SAlan Somers 		if (bp->bio_cmd == BIO_GETATTR)
394*0bab7fa8SAlan Somers 			cbp->bio_done = g_eli_getattr_done;
395*0bab7fa8SAlan Somers 		else
396d3a1be90SPawel Jakub Dawidek 			cbp->bio_done = g_std_done;
397d3a1be90SPawel Jakub Dawidek 		cp = LIST_FIRST(&sc->sc_geom->consumer);
398d3a1be90SPawel Jakub Dawidek 		cbp->bio_to = cp->provider;
399cd0d707eSPawel Jakub Dawidek 		G_ELI_LOGREQ(2, cbp, "Sending request.");
400d3a1be90SPawel Jakub Dawidek 		g_io_request(cbp, cp);
401d3a1be90SPawel Jakub Dawidek 		break;
402c58794deSPawel Jakub Dawidek 	}
403c58794deSPawel Jakub Dawidek }
404c58794deSPawel Jakub Dawidek 
4053ac01bc2SPawel Jakub Dawidek static int
4063ac01bc2SPawel Jakub Dawidek g_eli_newsession(struct g_eli_worker *wr)
4073ac01bc2SPawel Jakub Dawidek {
4083ac01bc2SPawel Jakub Dawidek 	struct g_eli_softc *sc;
4093ac01bc2SPawel Jakub Dawidek 	struct cryptoini crie, cria;
4103ac01bc2SPawel Jakub Dawidek 	int error;
4113ac01bc2SPawel Jakub Dawidek 
4123ac01bc2SPawel Jakub Dawidek 	sc = wr->w_softc;
4133ac01bc2SPawel Jakub Dawidek 
4143ac01bc2SPawel Jakub Dawidek 	bzero(&crie, sizeof(crie));
4153ac01bc2SPawel Jakub Dawidek 	crie.cri_alg = sc->sc_ealgo;
4163ac01bc2SPawel Jakub Dawidek 	crie.cri_klen = sc->sc_ekeylen;
4173ac01bc2SPawel Jakub Dawidek 	if (sc->sc_ealgo == CRYPTO_AES_XTS)
4183ac01bc2SPawel Jakub Dawidek 		crie.cri_klen <<= 1;
419ad0a5236SPawel Jakub Dawidek 	if ((sc->sc_flags & G_ELI_FLAG_FIRST_KEY) != 0) {
420ad0a5236SPawel Jakub Dawidek 		crie.cri_key = g_eli_key_hold(sc, 0,
421ad0a5236SPawel Jakub Dawidek 		    LIST_FIRST(&sc->sc_geom->consumer)->provider->sectorsize);
422ad0a5236SPawel Jakub Dawidek 	} else {
4231e09ff3dSPawel Jakub Dawidek 		crie.cri_key = sc->sc_ekey;
424ad0a5236SPawel Jakub Dawidek 	}
4253ac01bc2SPawel Jakub Dawidek 	if (sc->sc_flags & G_ELI_FLAG_AUTH) {
4263ac01bc2SPawel Jakub Dawidek 		bzero(&cria, sizeof(cria));
4273ac01bc2SPawel Jakub Dawidek 		cria.cri_alg = sc->sc_aalgo;
4283ac01bc2SPawel Jakub Dawidek 		cria.cri_klen = sc->sc_akeylen;
4293ac01bc2SPawel Jakub Dawidek 		cria.cri_key = sc->sc_akey;
4303ac01bc2SPawel Jakub Dawidek 		crie.cri_next = &cria;
4313ac01bc2SPawel Jakub Dawidek 	}
4323ac01bc2SPawel Jakub Dawidek 
4333ac01bc2SPawel Jakub Dawidek 	switch (sc->sc_crypto) {
4343ac01bc2SPawel Jakub Dawidek 	case G_ELI_CRYPTO_SW:
4353ac01bc2SPawel Jakub Dawidek 		error = crypto_newsession(&wr->w_sid, &crie,
4363ac01bc2SPawel Jakub Dawidek 		    CRYPTOCAP_F_SOFTWARE);
4373ac01bc2SPawel Jakub Dawidek 		break;
4383ac01bc2SPawel Jakub Dawidek 	case G_ELI_CRYPTO_HW:
4393ac01bc2SPawel Jakub Dawidek 		error = crypto_newsession(&wr->w_sid, &crie,
4403ac01bc2SPawel Jakub Dawidek 		    CRYPTOCAP_F_HARDWARE);
4413ac01bc2SPawel Jakub Dawidek 		break;
4423ac01bc2SPawel Jakub Dawidek 	case G_ELI_CRYPTO_UNKNOWN:
4433ac01bc2SPawel Jakub Dawidek 		error = crypto_newsession(&wr->w_sid, &crie,
4443ac01bc2SPawel Jakub Dawidek 		    CRYPTOCAP_F_HARDWARE);
4453ac01bc2SPawel Jakub Dawidek 		if (error == 0) {
4463ac01bc2SPawel Jakub Dawidek 			mtx_lock(&sc->sc_queue_mtx);
4473ac01bc2SPawel Jakub Dawidek 			if (sc->sc_crypto == G_ELI_CRYPTO_UNKNOWN)
4483ac01bc2SPawel Jakub Dawidek 				sc->sc_crypto = G_ELI_CRYPTO_HW;
4493ac01bc2SPawel Jakub Dawidek 			mtx_unlock(&sc->sc_queue_mtx);
4503ac01bc2SPawel Jakub Dawidek 		} else {
4513ac01bc2SPawel Jakub Dawidek 			error = crypto_newsession(&wr->w_sid, &crie,
4523ac01bc2SPawel Jakub Dawidek 			    CRYPTOCAP_F_SOFTWARE);
4533ac01bc2SPawel Jakub Dawidek 			mtx_lock(&sc->sc_queue_mtx);
4543ac01bc2SPawel Jakub Dawidek 			if (sc->sc_crypto == G_ELI_CRYPTO_UNKNOWN)
4553ac01bc2SPawel Jakub Dawidek 				sc->sc_crypto = G_ELI_CRYPTO_SW;
4563ac01bc2SPawel Jakub Dawidek 			mtx_unlock(&sc->sc_queue_mtx);
4573ac01bc2SPawel Jakub Dawidek 		}
4583ac01bc2SPawel Jakub Dawidek 		break;
4593ac01bc2SPawel Jakub Dawidek 	default:
4603ac01bc2SPawel Jakub Dawidek 		panic("%s: invalid condition", __func__);
4613ac01bc2SPawel Jakub Dawidek 	}
4623ac01bc2SPawel Jakub Dawidek 
463ad0a5236SPawel Jakub Dawidek 	if ((sc->sc_flags & G_ELI_FLAG_FIRST_KEY) != 0)
464ad0a5236SPawel Jakub Dawidek 		g_eli_key_drop(sc, crie.cri_key);
465ad0a5236SPawel Jakub Dawidek 
4663ac01bc2SPawel Jakub Dawidek 	return (error);
4673ac01bc2SPawel Jakub Dawidek }
4683ac01bc2SPawel Jakub Dawidek 
4693ac01bc2SPawel Jakub Dawidek static void
4703ac01bc2SPawel Jakub Dawidek g_eli_freesession(struct g_eli_worker *wr)
4713ac01bc2SPawel Jakub Dawidek {
4723ac01bc2SPawel Jakub Dawidek 
4733ac01bc2SPawel Jakub Dawidek 	crypto_freesession(wr->w_sid);
4743ac01bc2SPawel Jakub Dawidek }
4753ac01bc2SPawel Jakub Dawidek 
4765ad4a7c7SPawel Jakub Dawidek static void
4775ad4a7c7SPawel Jakub Dawidek g_eli_cancel(struct g_eli_softc *sc)
4785ad4a7c7SPawel Jakub Dawidek {
4795ad4a7c7SPawel Jakub Dawidek 	struct bio *bp;
4805ad4a7c7SPawel Jakub Dawidek 
4815ad4a7c7SPawel Jakub Dawidek 	mtx_assert(&sc->sc_queue_mtx, MA_OWNED);
4825ad4a7c7SPawel Jakub Dawidek 
4835ad4a7c7SPawel Jakub Dawidek 	while ((bp = bioq_takefirst(&sc->sc_queue)) != NULL) {
4845ad4a7c7SPawel Jakub Dawidek 		KASSERT(bp->bio_pflags == G_ELI_NEW_BIO,
4855ad4a7c7SPawel Jakub Dawidek 		    ("Not new bio when canceling (bp=%p).", bp));
4865ad4a7c7SPawel Jakub Dawidek 		g_io_deliver(bp, ENXIO);
4875ad4a7c7SPawel Jakub Dawidek 	}
4885ad4a7c7SPawel Jakub Dawidek }
4895ad4a7c7SPawel Jakub Dawidek 
4905ad4a7c7SPawel Jakub Dawidek static struct bio *
4915ad4a7c7SPawel Jakub Dawidek g_eli_takefirst(struct g_eli_softc *sc)
4925ad4a7c7SPawel Jakub Dawidek {
4935ad4a7c7SPawel Jakub Dawidek 	struct bio *bp;
4945ad4a7c7SPawel Jakub Dawidek 
4955ad4a7c7SPawel Jakub Dawidek 	mtx_assert(&sc->sc_queue_mtx, MA_OWNED);
4965ad4a7c7SPawel Jakub Dawidek 
4975ad4a7c7SPawel Jakub Dawidek 	if (!(sc->sc_flags & G_ELI_FLAG_SUSPEND))
4985ad4a7c7SPawel Jakub Dawidek 		return (bioq_takefirst(&sc->sc_queue));
4995ad4a7c7SPawel Jakub Dawidek 	/*
5005ad4a7c7SPawel Jakub Dawidek 	 * Device suspended, so we skip new I/O requests.
5015ad4a7c7SPawel Jakub Dawidek 	 */
5025ad4a7c7SPawel Jakub Dawidek 	TAILQ_FOREACH(bp, &sc->sc_queue.queue, bio_queue) {
5035ad4a7c7SPawel Jakub Dawidek 		if (bp->bio_pflags != G_ELI_NEW_BIO)
5045ad4a7c7SPawel Jakub Dawidek 			break;
5055ad4a7c7SPawel Jakub Dawidek 	}
5065ad4a7c7SPawel Jakub Dawidek 	if (bp != NULL)
5075ad4a7c7SPawel Jakub Dawidek 		bioq_remove(&sc->sc_queue, bp);
5085ad4a7c7SPawel Jakub Dawidek 	return (bp);
5095ad4a7c7SPawel Jakub Dawidek }
5105ad4a7c7SPawel Jakub Dawidek 
511c58794deSPawel Jakub Dawidek /*
512c58794deSPawel Jakub Dawidek  * This is the main function for kernel worker thread when we don't have
513c58794deSPawel Jakub Dawidek  * hardware acceleration and we have to do cryptography in software.
514c58794deSPawel Jakub Dawidek  * Dedicated thread is needed, so we don't slow down g_up/g_down GEOM
515c58794deSPawel Jakub Dawidek  * threads with crypto work.
516c58794deSPawel Jakub Dawidek  */
517c58794deSPawel Jakub Dawidek static void
518c58794deSPawel Jakub Dawidek g_eli_worker(void *arg)
519c58794deSPawel Jakub Dawidek {
520c58794deSPawel Jakub Dawidek 	struct g_eli_softc *sc;
521c58794deSPawel Jakub Dawidek 	struct g_eli_worker *wr;
522c58794deSPawel Jakub Dawidek 	struct bio *bp;
5233ac01bc2SPawel Jakub Dawidek 	int error;
524c58794deSPawel Jakub Dawidek 
525c58794deSPawel Jakub Dawidek 	wr = arg;
526c58794deSPawel Jakub Dawidek 	sc = wr->w_softc;
527fdce57a0SJohn Baldwin #ifdef EARLY_AP_STARTUP
528fdce57a0SJohn Baldwin 	MPASS(!sc->sc_cpubind || smp_started);
529fdce57a0SJohn Baldwin #elif defined(SMP)
530a1ea1a22SPawel Jakub Dawidek 	/* Before sched_bind() to a CPU, wait for all CPUs to go on-line. */
5310c879bd9SPawel Jakub Dawidek 	if (sc->sc_cpubind) {
532a1ea1a22SPawel Jakub Dawidek 		while (!smp_started)
533a1ea1a22SPawel Jakub Dawidek 			tsleep(wr, 0, "geli:smp", hz / 4);
534a1ea1a22SPawel Jakub Dawidek 	}
535a1ea1a22SPawel Jakub Dawidek #endif
536982d11f8SJeff Roberson 	thread_lock(curthread);
53731c4cef7SPawel Jakub Dawidek 	sched_prio(curthread, PUSER);
5380c879bd9SPawel Jakub Dawidek 	if (sc->sc_cpubind)
5390c879bd9SPawel Jakub Dawidek 		sched_bind(curthread, wr->w_number % mp_ncpus);
540982d11f8SJeff Roberson 	thread_unlock(curthread);
541c58794deSPawel Jakub Dawidek 
542c58794deSPawel Jakub Dawidek 	G_ELI_DEBUG(1, "Thread %s started.", curthread->td_proc->p_comm);
543c58794deSPawel Jakub Dawidek 
544c58794deSPawel Jakub Dawidek 	for (;;) {
545c58794deSPawel Jakub Dawidek 		mtx_lock(&sc->sc_queue_mtx);
5465ad4a7c7SPawel Jakub Dawidek again:
5475ad4a7c7SPawel Jakub Dawidek 		bp = g_eli_takefirst(sc);
548c58794deSPawel Jakub Dawidek 		if (bp == NULL) {
549eaa3b919SPawel Jakub Dawidek 			if (sc->sc_flags & G_ELI_FLAG_DESTROY) {
5505ad4a7c7SPawel Jakub Dawidek 				g_eli_cancel(sc);
551c58794deSPawel Jakub Dawidek 				LIST_REMOVE(wr, w_next);
5523ac01bc2SPawel Jakub Dawidek 				g_eli_freesession(wr);
553c58794deSPawel Jakub Dawidek 				free(wr, M_ELI);
554c58794deSPawel Jakub Dawidek 				G_ELI_DEBUG(1, "Thread %s exiting.",
555c58794deSPawel Jakub Dawidek 				    curthread->td_proc->p_comm);
556c58794deSPawel Jakub Dawidek 				wakeup(&sc->sc_workers);
557c58794deSPawel Jakub Dawidek 				mtx_unlock(&sc->sc_queue_mtx);
5583745c395SJulian Elischer 				kproc_exit(0);
559c58794deSPawel Jakub Dawidek 			}
5605ad4a7c7SPawel Jakub Dawidek 			while (sc->sc_flags & G_ELI_FLAG_SUSPEND) {
5615ad4a7c7SPawel Jakub Dawidek 				if (sc->sc_inflight > 0) {
562038c55adSPawel Jakub Dawidek 					G_ELI_DEBUG(0, "inflight=%d",
563038c55adSPawel Jakub Dawidek 					    sc->sc_inflight);
5645ad4a7c7SPawel Jakub Dawidek 					/*
5655ad4a7c7SPawel Jakub Dawidek 					 * We still have inflight BIOs, so
5665ad4a7c7SPawel Jakub Dawidek 					 * sleep and retry.
5675ad4a7c7SPawel Jakub Dawidek 					 */
5685ad4a7c7SPawel Jakub Dawidek 					msleep(sc, &sc->sc_queue_mtx, PRIBIO,
5695ad4a7c7SPawel Jakub Dawidek 					    "geli:inf", hz / 5);
5705ad4a7c7SPawel Jakub Dawidek 					goto again;
5715ad4a7c7SPawel Jakub Dawidek 				}
5725ad4a7c7SPawel Jakub Dawidek 				/*
5735ad4a7c7SPawel Jakub Dawidek 				 * Suspend requested, mark the worker as
5745ad4a7c7SPawel Jakub Dawidek 				 * suspended and go to sleep.
5755ad4a7c7SPawel Jakub Dawidek 				 */
5763ac01bc2SPawel Jakub Dawidek 				if (wr->w_active) {
5773ac01bc2SPawel Jakub Dawidek 					g_eli_freesession(wr);
5783ac01bc2SPawel Jakub Dawidek 					wr->w_active = FALSE;
5793ac01bc2SPawel Jakub Dawidek 				}
5805ad4a7c7SPawel Jakub Dawidek 				wakeup(&sc->sc_workers);
5815ad4a7c7SPawel Jakub Dawidek 				msleep(sc, &sc->sc_queue_mtx, PRIBIO,
5825ad4a7c7SPawel Jakub Dawidek 				    "geli:suspend", 0);
5833ac01bc2SPawel Jakub Dawidek 				if (!wr->w_active &&
5843ac01bc2SPawel Jakub Dawidek 				    !(sc->sc_flags & G_ELI_FLAG_SUSPEND)) {
5853ac01bc2SPawel Jakub Dawidek 					error = g_eli_newsession(wr);
5863ac01bc2SPawel Jakub Dawidek 					KASSERT(error == 0,
5873ac01bc2SPawel Jakub Dawidek 					    ("g_eli_newsession() failed on resume (error=%d)",
5883ac01bc2SPawel Jakub Dawidek 					    error));
5893ac01bc2SPawel Jakub Dawidek 					wr->w_active = TRUE;
5903ac01bc2SPawel Jakub Dawidek 				}
5915ad4a7c7SPawel Jakub Dawidek 				goto again;
5925ad4a7c7SPawel Jakub Dawidek 			}
59331c4cef7SPawel Jakub Dawidek 			msleep(sc, &sc->sc_queue_mtx, PDROP, "geli:w", 0);
594c58794deSPawel Jakub Dawidek 			continue;
595c58794deSPawel Jakub Dawidek 		}
5965ad4a7c7SPawel Jakub Dawidek 		if (bp->bio_pflags == G_ELI_NEW_BIO)
5975ad4a7c7SPawel Jakub Dawidek 			atomic_add_int(&sc->sc_inflight, 1);
598c58794deSPawel Jakub Dawidek 		mtx_unlock(&sc->sc_queue_mtx);
5995ad4a7c7SPawel Jakub Dawidek 		if (bp->bio_pflags == G_ELI_NEW_BIO) {
6005ad4a7c7SPawel Jakub Dawidek 			bp->bio_pflags = 0;
6015ad4a7c7SPawel Jakub Dawidek 			if (sc->sc_flags & G_ELI_FLAG_AUTH) {
6025ad4a7c7SPawel Jakub Dawidek 				if (bp->bio_cmd == BIO_READ)
603eaa3b919SPawel Jakub Dawidek 					g_eli_auth_read(sc, bp);
6045ad4a7c7SPawel Jakub Dawidek 				else
6055ad4a7c7SPawel Jakub Dawidek 					g_eli_auth_run(wr, bp);
6065ad4a7c7SPawel Jakub Dawidek 			} else {
6075ad4a7c7SPawel Jakub Dawidek 				if (bp->bio_cmd == BIO_READ)
6085ad4a7c7SPawel Jakub Dawidek 					g_eli_crypto_read(sc, bp, 1);
6095ad4a7c7SPawel Jakub Dawidek 				else
6105ad4a7c7SPawel Jakub Dawidek 					g_eli_crypto_run(wr, bp);
6115ad4a7c7SPawel Jakub Dawidek 			}
6125ad4a7c7SPawel Jakub Dawidek 		} else {
6135ad4a7c7SPawel Jakub Dawidek 			if (sc->sc_flags & G_ELI_FLAG_AUTH)
614eaa3b919SPawel Jakub Dawidek 				g_eli_auth_run(wr, bp);
615eaa3b919SPawel Jakub Dawidek 			else
616dddd1d53SPawel Jakub Dawidek 				g_eli_crypto_run(wr, bp);
617c58794deSPawel Jakub Dawidek 		}
618c58794deSPawel Jakub Dawidek 	}
6195ad4a7c7SPawel Jakub Dawidek }
620c58794deSPawel Jakub Dawidek 
621c58794deSPawel Jakub Dawidek int
622c58794deSPawel Jakub Dawidek g_eli_read_metadata(struct g_class *mp, struct g_provider *pp,
623c58794deSPawel Jakub Dawidek     struct g_eli_metadata *md)
624c58794deSPawel Jakub Dawidek {
625c58794deSPawel Jakub Dawidek 	struct g_geom *gp;
626c58794deSPawel Jakub Dawidek 	struct g_consumer *cp;
627c58794deSPawel Jakub Dawidek 	u_char *buf = NULL;
628c58794deSPawel Jakub Dawidek 	int error;
629c58794deSPawel Jakub Dawidek 
630c58794deSPawel Jakub Dawidek 	g_topology_assert();
631c58794deSPawel Jakub Dawidek 
632c58794deSPawel Jakub Dawidek 	gp = g_new_geomf(mp, "eli:taste");
633c58794deSPawel Jakub Dawidek 	gp->start = g_eli_start;
634c58794deSPawel Jakub Dawidek 	gp->access = g_std_access;
635c58794deSPawel Jakub Dawidek 	/*
636c58794deSPawel Jakub Dawidek 	 * g_eli_read_metadata() is always called from the event thread.
637c58794deSPawel Jakub Dawidek 	 * Our geom is created and destroyed in the same event, so there
638c58794deSPawel Jakub Dawidek 	 * could be no orphan nor spoil event in the meantime.
639c58794deSPawel Jakub Dawidek 	 */
640c58794deSPawel Jakub Dawidek 	gp->orphan = g_eli_orphan_spoil_assert;
641c58794deSPawel Jakub Dawidek 	gp->spoiled = g_eli_orphan_spoil_assert;
642c58794deSPawel Jakub Dawidek 	cp = g_new_consumer(gp);
643c58794deSPawel Jakub Dawidek 	error = g_attach(cp, pp);
644c58794deSPawel Jakub Dawidek 	if (error != 0)
645c58794deSPawel Jakub Dawidek 		goto end;
646c58794deSPawel Jakub Dawidek 	error = g_access(cp, 1, 0, 0);
647c58794deSPawel Jakub Dawidek 	if (error != 0)
648c58794deSPawel Jakub Dawidek 		goto end;
649c58794deSPawel Jakub Dawidek 	g_topology_unlock();
650c58794deSPawel Jakub Dawidek 	buf = g_read_data(cp, pp->mediasize - pp->sectorsize, pp->sectorsize,
651c58794deSPawel Jakub Dawidek 	    &error);
652c58794deSPawel Jakub Dawidek 	g_topology_lock();
6538a4a44b5SMaxim Sobolev 	if (buf == NULL)
654c58794deSPawel Jakub Dawidek 		goto end;
655fefb6a14SPawel Jakub Dawidek 	error = eli_metadata_decode(buf, md);
656fefb6a14SPawel Jakub Dawidek 	if (error != 0)
657fefb6a14SPawel Jakub Dawidek 		goto end;
658fefb6a14SPawel Jakub Dawidek 	/* Metadata was read and decoded successfully. */
659c58794deSPawel Jakub Dawidek end:
660c58794deSPawel Jakub Dawidek 	if (buf != NULL)
661c58794deSPawel Jakub Dawidek 		g_free(buf);
662c58794deSPawel Jakub Dawidek 	if (cp->provider != NULL) {
663c58794deSPawel Jakub Dawidek 		if (cp->acr == 1)
664c58794deSPawel Jakub Dawidek 			g_access(cp, -1, 0, 0);
665c58794deSPawel Jakub Dawidek 		g_detach(cp);
666c58794deSPawel Jakub Dawidek 	}
667c58794deSPawel Jakub Dawidek 	g_destroy_consumer(cp);
668c58794deSPawel Jakub Dawidek 	g_destroy_geom(gp);
669c58794deSPawel Jakub Dawidek 	return (error);
670c58794deSPawel Jakub Dawidek }
671c58794deSPawel Jakub Dawidek 
672c58794deSPawel Jakub Dawidek /*
673c58794deSPawel Jakub Dawidek  * The function is called when we had last close on provider and user requested
674c58794deSPawel Jakub Dawidek  * to close it when this situation occur.
675c58794deSPawel Jakub Dawidek  */
676c58794deSPawel Jakub Dawidek static void
67719351a14SAlexander Motin g_eli_last_close(void *arg, int flags __unused)
678c58794deSPawel Jakub Dawidek {
679c58794deSPawel Jakub Dawidek 	struct g_geom *gp;
68019351a14SAlexander Motin 	char gpname[64];
681c58794deSPawel Jakub Dawidek 	int error;
682c58794deSPawel Jakub Dawidek 
683c58794deSPawel Jakub Dawidek 	g_topology_assert();
68419351a14SAlexander Motin 	gp = arg;
68519351a14SAlexander Motin 	strlcpy(gpname, gp->name, sizeof(gpname));
68619351a14SAlexander Motin 	error = g_eli_destroy(gp->softc, TRUE);
687c58794deSPawel Jakub Dawidek 	KASSERT(error == 0, ("Cannot detach %s on last close (error=%d).",
68819351a14SAlexander Motin 	    gpname, error));
68919351a14SAlexander Motin 	G_ELI_DEBUG(0, "Detached %s on last close.", gpname);
690c58794deSPawel Jakub Dawidek }
691c58794deSPawel Jakub Dawidek 
692c58794deSPawel Jakub Dawidek int
693c58794deSPawel Jakub Dawidek g_eli_access(struct g_provider *pp, int dr, int dw, int de)
694c58794deSPawel Jakub Dawidek {
695c58794deSPawel Jakub Dawidek 	struct g_eli_softc *sc;
696c58794deSPawel Jakub Dawidek 	struct g_geom *gp;
697c58794deSPawel Jakub Dawidek 
698c58794deSPawel Jakub Dawidek 	gp = pp->geom;
699c58794deSPawel Jakub Dawidek 	sc = gp->softc;
700c58794deSPawel Jakub Dawidek 
701c58794deSPawel Jakub Dawidek 	if (dw > 0) {
70285059016SPawel Jakub Dawidek 		if (sc->sc_flags & G_ELI_FLAG_RO) {
70385059016SPawel Jakub Dawidek 			/* Deny write attempts. */
70485059016SPawel Jakub Dawidek 			return (EROFS);
70585059016SPawel Jakub Dawidek 		}
706c58794deSPawel Jakub Dawidek 		/* Someone is opening us for write, we need to remember that. */
707c58794deSPawel Jakub Dawidek 		sc->sc_flags |= G_ELI_FLAG_WOPEN;
708c58794deSPawel Jakub Dawidek 		return (0);
709c58794deSPawel Jakub Dawidek 	}
710c58794deSPawel Jakub Dawidek 	/* Is this the last close? */
711c58794deSPawel Jakub Dawidek 	if (pp->acr + dr > 0 || pp->acw + dw > 0 || pp->ace + de > 0)
712c58794deSPawel Jakub Dawidek 		return (0);
713c58794deSPawel Jakub Dawidek 
714c58794deSPawel Jakub Dawidek 	/*
715c58794deSPawel Jakub Dawidek 	 * Automatically detach on last close if requested.
716c58794deSPawel Jakub Dawidek 	 */
717c58794deSPawel Jakub Dawidek 	if ((sc->sc_flags & G_ELI_FLAG_RW_DETACH) ||
718c58794deSPawel Jakub Dawidek 	    (sc->sc_flags & G_ELI_FLAG_WOPEN)) {
71919351a14SAlexander Motin 		g_post_event(g_eli_last_close, gp, M_WAITOK, NULL);
720c58794deSPawel Jakub Dawidek 	}
721c58794deSPawel Jakub Dawidek 	return (0);
722c58794deSPawel Jakub Dawidek }
723c58794deSPawel Jakub Dawidek 
724eba8f137SPawel Jakub Dawidek static int
725eba8f137SPawel Jakub Dawidek g_eli_cpu_is_disabled(int cpu)
726eba8f137SPawel Jakub Dawidek {
727eba8f137SPawel Jakub Dawidek #ifdef SMP
72871a19bdcSAttilio Rao 	return (CPU_ISSET(cpu, &hlt_cpus_mask));
729eba8f137SPawel Jakub Dawidek #else
730eba8f137SPawel Jakub Dawidek 	return (0);
731eba8f137SPawel Jakub Dawidek #endif
732eba8f137SPawel Jakub Dawidek }
733eba8f137SPawel Jakub Dawidek 
734c58794deSPawel Jakub Dawidek struct g_geom *
735c58794deSPawel Jakub Dawidek g_eli_create(struct gctl_req *req, struct g_class *mp, struct g_provider *bpp,
736c58794deSPawel Jakub Dawidek     const struct g_eli_metadata *md, const u_char *mkey, int nkey)
737c58794deSPawel Jakub Dawidek {
738c58794deSPawel Jakub Dawidek 	struct g_eli_softc *sc;
739c58794deSPawel Jakub Dawidek 	struct g_eli_worker *wr;
740c58794deSPawel Jakub Dawidek 	struct g_geom *gp;
741c58794deSPawel Jakub Dawidek 	struct g_provider *pp;
742c58794deSPawel Jakub Dawidek 	struct g_consumer *cp;
743c58794deSPawel Jakub Dawidek 	u_int i, threads;
744c58794deSPawel Jakub Dawidek 	int error;
745c58794deSPawel Jakub Dawidek 
746c58794deSPawel Jakub Dawidek 	G_ELI_DEBUG(1, "Creating device %s%s.", bpp->name, G_ELI_SUFFIX);
747c58794deSPawel Jakub Dawidek 
748c58794deSPawel Jakub Dawidek 	gp = g_new_geomf(mp, "%s%s", bpp->name, G_ELI_SUFFIX);
749c58794deSPawel Jakub Dawidek 	sc = malloc(sizeof(*sc), M_ELI, M_WAITOK | M_ZERO);
750c58794deSPawel Jakub Dawidek 	gp->start = g_eli_start;
751c58794deSPawel Jakub Dawidek 	/*
7524273d412SPawel Jakub Dawidek 	 * Spoiling can happen even though we have the provider open
7534273d412SPawel Jakub Dawidek 	 * exclusively, e.g. through media change events.
754c58794deSPawel Jakub Dawidek 	 */
7554273d412SPawel Jakub Dawidek 	gp->spoiled = g_eli_orphan;
756c58794deSPawel Jakub Dawidek 	gp->orphan = g_eli_orphan;
75785059016SPawel Jakub Dawidek 	gp->dumpconf = g_eli_dumpconf;
758c58794deSPawel Jakub Dawidek 	/*
75985059016SPawel Jakub Dawidek 	 * If detach-on-last-close feature is not enabled and we don't operate
76085059016SPawel Jakub Dawidek 	 * on read-only provider, we can simply use g_std_access().
761c58794deSPawel Jakub Dawidek 	 */
76285059016SPawel Jakub Dawidek 	if (md->md_flags & (G_ELI_FLAG_WO_DETACH | G_ELI_FLAG_RO))
763c58794deSPawel Jakub Dawidek 		gp->access = g_eli_access;
764c58794deSPawel Jakub Dawidek 	else
765c58794deSPawel Jakub Dawidek 		gp->access = g_std_access;
766c58794deSPawel Jakub Dawidek 
7674332fecaSAllan Jude 	eli_metadata_softc(sc, md, bpp->sectorsize, bpp->mediasize);
768c58794deSPawel Jakub Dawidek 	sc->sc_nkey = nkey;
769eaa3b919SPawel Jakub Dawidek 
770c58794deSPawel Jakub Dawidek 	gp->softc = sc;
771c58794deSPawel Jakub Dawidek 	sc->sc_geom = gp;
772c58794deSPawel Jakub Dawidek 
773c58794deSPawel Jakub Dawidek 	bioq_init(&sc->sc_queue);
774c58794deSPawel Jakub Dawidek 	mtx_init(&sc->sc_queue_mtx, "geli:queue", NULL, MTX_DEF);
7751e09ff3dSPawel Jakub Dawidek 	mtx_init(&sc->sc_ekeys_lock, "geli:ekeys", NULL, MTX_DEF);
776c58794deSPawel Jakub Dawidek 
777c58794deSPawel Jakub Dawidek 	pp = NULL;
778c58794deSPawel Jakub Dawidek 	cp = g_new_consumer(gp);
779c58794deSPawel Jakub Dawidek 	error = g_attach(cp, bpp);
780c58794deSPawel Jakub Dawidek 	if (error != 0) {
781c58794deSPawel Jakub Dawidek 		if (req != NULL) {
782c58794deSPawel Jakub Dawidek 			gctl_error(req, "Cannot attach to %s (error=%d).",
783c58794deSPawel Jakub Dawidek 			    bpp->name, error);
784c58794deSPawel Jakub Dawidek 		} else {
785c58794deSPawel Jakub Dawidek 			G_ELI_DEBUG(1, "Cannot attach to %s (error=%d).",
786c58794deSPawel Jakub Dawidek 			    bpp->name, error);
787c58794deSPawel Jakub Dawidek 		}
788c58794deSPawel Jakub Dawidek 		goto failed;
789c58794deSPawel Jakub Dawidek 	}
790c58794deSPawel Jakub Dawidek 	/*
791c58794deSPawel Jakub Dawidek 	 * Keep provider open all the time, so we can run critical tasks,
792c58794deSPawel Jakub Dawidek 	 * like Master Keys deletion, without wondering if we can open
793c58794deSPawel Jakub Dawidek 	 * provider or not.
79485059016SPawel Jakub Dawidek 	 * We don't open provider for writing only when user requested read-only
79585059016SPawel Jakub Dawidek 	 * access.
796c58794deSPawel Jakub Dawidek 	 */
79785059016SPawel Jakub Dawidek 	if (sc->sc_flags & G_ELI_FLAG_RO)
79885059016SPawel Jakub Dawidek 		error = g_access(cp, 1, 0, 1);
79985059016SPawel Jakub Dawidek 	else
800c58794deSPawel Jakub Dawidek 		error = g_access(cp, 1, 1, 1);
801c58794deSPawel Jakub Dawidek 	if (error != 0) {
802c58794deSPawel Jakub Dawidek 		if (req != NULL) {
803c58794deSPawel Jakub Dawidek 			gctl_error(req, "Cannot access %s (error=%d).",
804c58794deSPawel Jakub Dawidek 			    bpp->name, error);
805c58794deSPawel Jakub Dawidek 		} else {
806c58794deSPawel Jakub Dawidek 			G_ELI_DEBUG(1, "Cannot access %s (error=%d).",
807c58794deSPawel Jakub Dawidek 			    bpp->name, error);
808c58794deSPawel Jakub Dawidek 		}
809c58794deSPawel Jakub Dawidek 		goto failed;
810c58794deSPawel Jakub Dawidek 	}
811c58794deSPawel Jakub Dawidek 
812c6a26d4cSPawel Jakub Dawidek 	/*
813c6a26d4cSPawel Jakub Dawidek 	 * Remember the keys in our softc structure.
814c6a26d4cSPawel Jakub Dawidek 	 */
815c6a26d4cSPawel Jakub Dawidek 	g_eli_mkey_propagate(sc, mkey);
816c6a26d4cSPawel Jakub Dawidek 
817c58794deSPawel Jakub Dawidek 	LIST_INIT(&sc->sc_workers);
818c58794deSPawel Jakub Dawidek 
819c58794deSPawel Jakub Dawidek 	threads = g_eli_threads;
820dd549194SPawel Jakub Dawidek 	if (threads == 0)
821dd549194SPawel Jakub Dawidek 		threads = mp_ncpus;
8220c879bd9SPawel Jakub Dawidek 	sc->sc_cpubind = (mp_ncpus > 1 && threads == mp_ncpus);
823c58794deSPawel Jakub Dawidek 	for (i = 0; i < threads; i++) {
824eba8f137SPawel Jakub Dawidek 		if (g_eli_cpu_is_disabled(i)) {
825eba8f137SPawel Jakub Dawidek 			G_ELI_DEBUG(1, "%s: CPU %u disabled, skipping.",
8261506db21SPawel Jakub Dawidek 			    bpp->name, i);
827eba8f137SPawel Jakub Dawidek 			continue;
828eba8f137SPawel Jakub Dawidek 		}
829c58794deSPawel Jakub Dawidek 		wr = malloc(sizeof(*wr), M_ELI, M_WAITOK | M_ZERO);
830c58794deSPawel Jakub Dawidek 		wr->w_softc = sc;
831c58794deSPawel Jakub Dawidek 		wr->w_number = i;
8325ad4a7c7SPawel Jakub Dawidek 		wr->w_active = TRUE;
833c58794deSPawel Jakub Dawidek 
8343ac01bc2SPawel Jakub Dawidek 		error = g_eli_newsession(wr);
835c58794deSPawel Jakub Dawidek 		if (error != 0) {
836c58794deSPawel Jakub Dawidek 			free(wr, M_ELI);
837c58794deSPawel Jakub Dawidek 			if (req != NULL) {
838c58794deSPawel Jakub Dawidek 				gctl_error(req, "Cannot set up crypto session "
839c58794deSPawel Jakub Dawidek 				    "for %s (error=%d).", bpp->name, error);
840c58794deSPawel Jakub Dawidek 			} else {
841c58794deSPawel Jakub Dawidek 				G_ELI_DEBUG(1, "Cannot set up crypto session "
842c58794deSPawel Jakub Dawidek 				    "for %s (error=%d).", bpp->name, error);
843c58794deSPawel Jakub Dawidek 			}
844c58794deSPawel Jakub Dawidek 			goto failed;
845c58794deSPawel Jakub Dawidek 		}
846c58794deSPawel Jakub Dawidek 
8473745c395SJulian Elischer 		error = kproc_create(g_eli_worker, wr, &wr->w_proc, 0, 0,
848c58794deSPawel Jakub Dawidek 		    "g_eli[%u] %s", i, bpp->name);
849c58794deSPawel Jakub Dawidek 		if (error != 0) {
8503ac01bc2SPawel Jakub Dawidek 			g_eli_freesession(wr);
851c58794deSPawel Jakub Dawidek 			free(wr, M_ELI);
852c58794deSPawel Jakub Dawidek 			if (req != NULL) {
853dddd1d53SPawel Jakub Dawidek 				gctl_error(req, "Cannot create kernel thread "
854dddd1d53SPawel Jakub Dawidek 				    "for %s (error=%d).", bpp->name, error);
855c58794deSPawel Jakub Dawidek 			} else {
856dddd1d53SPawel Jakub Dawidek 				G_ELI_DEBUG(1, "Cannot create kernel thread "
857dddd1d53SPawel Jakub Dawidek 				    "for %s (error=%d).", bpp->name, error);
858c58794deSPawel Jakub Dawidek 			}
859c58794deSPawel Jakub Dawidek 			goto failed;
860c58794deSPawel Jakub Dawidek 		}
861c58794deSPawel Jakub Dawidek 		LIST_INSERT_HEAD(&sc->sc_workers, wr, w_next);
862c58794deSPawel Jakub Dawidek 	}
863c58794deSPawel Jakub Dawidek 
864c58794deSPawel Jakub Dawidek 	/*
865c58794deSPawel Jakub Dawidek 	 * Create decrypted provider.
866c58794deSPawel Jakub Dawidek 	 */
867c58794deSPawel Jakub Dawidek 	pp = g_new_providerf(gp, "%s%s", bpp->name, G_ELI_SUFFIX);
868c6a26d4cSPawel Jakub Dawidek 	pp->mediasize = sc->sc_mediasize;
869c6a26d4cSPawel Jakub Dawidek 	pp->sectorsize = sc->sc_sectorsize;
870eaa3b919SPawel Jakub Dawidek 
871c58794deSPawel Jakub Dawidek 	g_error_provider(pp, 0);
872c58794deSPawel Jakub Dawidek 
873c58794deSPawel Jakub Dawidek 	G_ELI_DEBUG(0, "Device %s created.", pp->name);
874eaa3b919SPawel Jakub Dawidek 	G_ELI_DEBUG(0, "Encryption: %s %u", g_eli_algo2str(sc->sc_ealgo),
875eaa3b919SPawel Jakub Dawidek 	    sc->sc_ekeylen);
876eaa3b919SPawel Jakub Dawidek 	if (sc->sc_flags & G_ELI_FLAG_AUTH)
877eaa3b919SPawel Jakub Dawidek 		G_ELI_DEBUG(0, " Integrity: %s", g_eli_algo2str(sc->sc_aalgo));
878c58794deSPawel Jakub Dawidek 	G_ELI_DEBUG(0, "    Crypto: %s",
879c58794deSPawel Jakub Dawidek 	    sc->sc_crypto == G_ELI_CRYPTO_SW ? "software" : "hardware");
880c58794deSPawel Jakub Dawidek 	return (gp);
881c58794deSPawel Jakub Dawidek failed:
882c58794deSPawel Jakub Dawidek 	mtx_lock(&sc->sc_queue_mtx);
883c58794deSPawel Jakub Dawidek 	sc->sc_flags |= G_ELI_FLAG_DESTROY;
884c58794deSPawel Jakub Dawidek 	wakeup(sc);
885c58794deSPawel Jakub Dawidek 	/*
886c58794deSPawel Jakub Dawidek 	 * Wait for kernel threads self destruction.
887c58794deSPawel Jakub Dawidek 	 */
888c58794deSPawel Jakub Dawidek 	while (!LIST_EMPTY(&sc->sc_workers)) {
889c58794deSPawel Jakub Dawidek 		msleep(&sc->sc_workers, &sc->sc_queue_mtx, PRIBIO,
890c58794deSPawel Jakub Dawidek 		    "geli:destroy", 0);
891c58794deSPawel Jakub Dawidek 	}
892c58794deSPawel Jakub Dawidek 	mtx_destroy(&sc->sc_queue_mtx);
893c58794deSPawel Jakub Dawidek 	if (cp->provider != NULL) {
894c58794deSPawel Jakub Dawidek 		if (cp->acr == 1)
895c58794deSPawel Jakub Dawidek 			g_access(cp, -1, -1, -1);
896c58794deSPawel Jakub Dawidek 		g_detach(cp);
897c58794deSPawel Jakub Dawidek 	}
898c58794deSPawel Jakub Dawidek 	g_destroy_consumer(cp);
899c58794deSPawel Jakub Dawidek 	g_destroy_geom(gp);
9001e09ff3dSPawel Jakub Dawidek 	g_eli_key_destroy(sc);
901c58794deSPawel Jakub Dawidek 	bzero(sc, sizeof(*sc));
902c58794deSPawel Jakub Dawidek 	free(sc, M_ELI);
903c58794deSPawel Jakub Dawidek 	return (NULL);
904c58794deSPawel Jakub Dawidek }
905c58794deSPawel Jakub Dawidek 
906c58794deSPawel Jakub Dawidek int
907c58794deSPawel Jakub Dawidek g_eli_destroy(struct g_eli_softc *sc, boolean_t force)
908c58794deSPawel Jakub Dawidek {
909c58794deSPawel Jakub Dawidek 	struct g_geom *gp;
910c58794deSPawel Jakub Dawidek 	struct g_provider *pp;
911c58794deSPawel Jakub Dawidek 
912c58794deSPawel Jakub Dawidek 	g_topology_assert();
913c58794deSPawel Jakub Dawidek 
914c58794deSPawel Jakub Dawidek 	if (sc == NULL)
915c58794deSPawel Jakub Dawidek 		return (ENXIO);
916c58794deSPawel Jakub Dawidek 
917c58794deSPawel Jakub Dawidek 	gp = sc->sc_geom;
918c58794deSPawel Jakub Dawidek 	pp = LIST_FIRST(&gp->provider);
919c58794deSPawel Jakub Dawidek 	if (pp != NULL && (pp->acr != 0 || pp->acw != 0 || pp->ace != 0)) {
920c58794deSPawel Jakub Dawidek 		if (force) {
921c58794deSPawel Jakub Dawidek 			G_ELI_DEBUG(1, "Device %s is still open, so it "
92298645006SChristian Brueffer 			    "cannot be definitely removed.", pp->name);
92319351a14SAlexander Motin 			sc->sc_flags |= G_ELI_FLAG_RW_DETACH;
92419351a14SAlexander Motin 			gp->access = g_eli_access;
92519351a14SAlexander Motin 			g_wither_provider(pp, ENXIO);
92619351a14SAlexander Motin 			return (EBUSY);
927c58794deSPawel Jakub Dawidek 		} else {
928c58794deSPawel Jakub Dawidek 			G_ELI_DEBUG(1,
929c58794deSPawel Jakub Dawidek 			    "Device %s is still open (r%dw%de%d).", pp->name,
930c58794deSPawel Jakub Dawidek 			    pp->acr, pp->acw, pp->ace);
931c58794deSPawel Jakub Dawidek 			return (EBUSY);
932c58794deSPawel Jakub Dawidek 		}
933c58794deSPawel Jakub Dawidek 	}
934c58794deSPawel Jakub Dawidek 
935c58794deSPawel Jakub Dawidek 	mtx_lock(&sc->sc_queue_mtx);
936c58794deSPawel Jakub Dawidek 	sc->sc_flags |= G_ELI_FLAG_DESTROY;
937c58794deSPawel Jakub Dawidek 	wakeup(sc);
938c58794deSPawel Jakub Dawidek 	while (!LIST_EMPTY(&sc->sc_workers)) {
939c58794deSPawel Jakub Dawidek 		msleep(&sc->sc_workers, &sc->sc_queue_mtx, PRIBIO,
940c58794deSPawel Jakub Dawidek 		    "geli:destroy", 0);
941c58794deSPawel Jakub Dawidek 	}
942c58794deSPawel Jakub Dawidek 	mtx_destroy(&sc->sc_queue_mtx);
943c58794deSPawel Jakub Dawidek 	gp->softc = NULL;
9441e09ff3dSPawel Jakub Dawidek 	g_eli_key_destroy(sc);
945c58794deSPawel Jakub Dawidek 	bzero(sc, sizeof(*sc));
946c58794deSPawel Jakub Dawidek 	free(sc, M_ELI);
947c58794deSPawel Jakub Dawidek 
948c58794deSPawel Jakub Dawidek 	if (pp == NULL || (pp->acr == 0 && pp->acw == 0 && pp->ace == 0))
949c58794deSPawel Jakub Dawidek 		G_ELI_DEBUG(0, "Device %s destroyed.", gp->name);
950c58794deSPawel Jakub Dawidek 	g_wither_geom_close(gp, ENXIO);
951c58794deSPawel Jakub Dawidek 
952c58794deSPawel Jakub Dawidek 	return (0);
953c58794deSPawel Jakub Dawidek }
954c58794deSPawel Jakub Dawidek 
955c58794deSPawel Jakub Dawidek static int
956c58794deSPawel Jakub Dawidek g_eli_destroy_geom(struct gctl_req *req __unused,
957c58794deSPawel Jakub Dawidek     struct g_class *mp __unused, struct g_geom *gp)
958c58794deSPawel Jakub Dawidek {
959c58794deSPawel Jakub Dawidek 	struct g_eli_softc *sc;
960c58794deSPawel Jakub Dawidek 
961c58794deSPawel Jakub Dawidek 	sc = gp->softc;
9625ad4a7c7SPawel Jakub Dawidek 	return (g_eli_destroy(sc, FALSE));
963c58794deSPawel Jakub Dawidek }
964c58794deSPawel Jakub Dawidek 
9659af2131bSPawel Jakub Dawidek static int
9669af2131bSPawel Jakub Dawidek g_eli_keyfiles_load(struct hmac_ctx *ctx, const char *provider)
9679af2131bSPawel Jakub Dawidek {
9681e189c08SMarcel Moolenaar 	u_char *keyfile, *data;
9699af2131bSPawel Jakub Dawidek 	char *file, name[64];
9701e189c08SMarcel Moolenaar 	size_t size;
9719af2131bSPawel Jakub Dawidek 	int i;
9729af2131bSPawel Jakub Dawidek 
9739af2131bSPawel Jakub Dawidek 	for (i = 0; ; i++) {
9749af2131bSPawel Jakub Dawidek 		snprintf(name, sizeof(name), "%s:geli_keyfile%d", provider, i);
9759af2131bSPawel Jakub Dawidek 		keyfile = preload_search_by_type(name);
976edaa9008SPawel Jakub Dawidek 		if (keyfile == NULL && i == 0) {
977edaa9008SPawel Jakub Dawidek 			/*
978edaa9008SPawel Jakub Dawidek 			 * If there is only one keyfile, allow simpler name.
979edaa9008SPawel Jakub Dawidek 			 */
980edaa9008SPawel Jakub Dawidek 			snprintf(name, sizeof(name), "%s:geli_keyfile", provider);
981edaa9008SPawel Jakub Dawidek 			keyfile = preload_search_by_type(name);
982edaa9008SPawel Jakub Dawidek 		}
9839af2131bSPawel Jakub Dawidek 		if (keyfile == NULL)
9849af2131bSPawel Jakub Dawidek 			return (i);	/* Return number of loaded keyfiles. */
9851e189c08SMarcel Moolenaar 		data = preload_fetch_addr(keyfile);
9869af2131bSPawel Jakub Dawidek 		if (data == NULL) {
9879af2131bSPawel Jakub Dawidek 			G_ELI_DEBUG(0, "Cannot find key file data for %s.",
9889af2131bSPawel Jakub Dawidek 			    name);
9899af2131bSPawel Jakub Dawidek 			return (0);
9909af2131bSPawel Jakub Dawidek 		}
9911e189c08SMarcel Moolenaar 		size = preload_fetch_size(keyfile);
9921e189c08SMarcel Moolenaar 		if (size == 0) {
9939af2131bSPawel Jakub Dawidek 			G_ELI_DEBUG(0, "Cannot find key file size for %s.",
9949af2131bSPawel Jakub Dawidek 			    name);
9959af2131bSPawel Jakub Dawidek 			return (0);
9969af2131bSPawel Jakub Dawidek 		}
9979af2131bSPawel Jakub Dawidek 		file = preload_search_info(keyfile, MODINFO_NAME);
9989af2131bSPawel Jakub Dawidek 		if (file == NULL) {
9999af2131bSPawel Jakub Dawidek 			G_ELI_DEBUG(0, "Cannot find key file name for %s.",
10009af2131bSPawel Jakub Dawidek 			    name);
10019af2131bSPawel Jakub Dawidek 			return (0);
10029af2131bSPawel Jakub Dawidek 		}
10039af2131bSPawel Jakub Dawidek 		G_ELI_DEBUG(1, "Loaded keyfile %s for %s (type: %s).", file,
10049af2131bSPawel Jakub Dawidek 		    provider, name);
10051e189c08SMarcel Moolenaar 		g_eli_crypto_hmac_update(ctx, data, size);
10069af2131bSPawel Jakub Dawidek 	}
10079af2131bSPawel Jakub Dawidek }
10089af2131bSPawel Jakub Dawidek 
10099af2131bSPawel Jakub Dawidek static void
10109af2131bSPawel Jakub Dawidek g_eli_keyfiles_clear(const char *provider)
10119af2131bSPawel Jakub Dawidek {
10121e189c08SMarcel Moolenaar 	u_char *keyfile, *data;
10139af2131bSPawel Jakub Dawidek 	char name[64];
10141e189c08SMarcel Moolenaar 	size_t size;
10159af2131bSPawel Jakub Dawidek 	int i;
10169af2131bSPawel Jakub Dawidek 
10179af2131bSPawel Jakub Dawidek 	for (i = 0; ; i++) {
10189af2131bSPawel Jakub Dawidek 		snprintf(name, sizeof(name), "%s:geli_keyfile%d", provider, i);
10199af2131bSPawel Jakub Dawidek 		keyfile = preload_search_by_type(name);
10209af2131bSPawel Jakub Dawidek 		if (keyfile == NULL)
10219af2131bSPawel Jakub Dawidek 			return;
10221e189c08SMarcel Moolenaar 		data = preload_fetch_addr(keyfile);
10231e189c08SMarcel Moolenaar 		size = preload_fetch_size(keyfile);
10241e189c08SMarcel Moolenaar 		if (data != NULL && size != 0)
10251e189c08SMarcel Moolenaar 			bzero(data, size);
10269af2131bSPawel Jakub Dawidek 	}
10279af2131bSPawel Jakub Dawidek }
10289af2131bSPawel Jakub Dawidek 
1029c58794deSPawel Jakub Dawidek /*
1030c58794deSPawel Jakub Dawidek  * Tasting is only made on boot.
1031c58794deSPawel Jakub Dawidek  * We detect providers which should be attached before root is mounted.
1032c58794deSPawel Jakub Dawidek  */
1033c58794deSPawel Jakub Dawidek static struct g_geom *
1034c58794deSPawel Jakub Dawidek g_eli_taste(struct g_class *mp, struct g_provider *pp, int flags __unused)
1035c58794deSPawel Jakub Dawidek {
1036c58794deSPawel Jakub Dawidek 	struct g_eli_metadata md;
1037c58794deSPawel Jakub Dawidek 	struct g_geom *gp;
1038c58794deSPawel Jakub Dawidek 	struct hmac_ctx ctx;
1039c58794deSPawel Jakub Dawidek 	char passphrase[256];
1040c58794deSPawel Jakub Dawidek 	u_char key[G_ELI_USERKEYLEN], mkey[G_ELI_DATAIVKEYLEN];
10413453dc72SMariusz Zaborski 	u_int i, nkey, nkeyfiles, tries, showpass;
1042c58794deSPawel Jakub Dawidek 	int error;
1043ec5c0e5bSAllan Jude         struct keybuf *keybuf;
1044c58794deSPawel Jakub Dawidek 
1045c58794deSPawel Jakub Dawidek 	g_trace(G_T_TOPOLOGY, "%s(%s, %s)", __func__, mp->name, pp->name);
1046c58794deSPawel Jakub Dawidek 	g_topology_assert();
1047c58794deSPawel Jakub Dawidek 
1048df3aed4fSPawel Jakub Dawidek 	if (root_mounted() || g_eli_tries == 0)
1049c58794deSPawel Jakub Dawidek 		return (NULL);
1050c58794deSPawel Jakub Dawidek 
1051c58794deSPawel Jakub Dawidek 	G_ELI_DEBUG(3, "Tasting %s.", pp->name);
1052c58794deSPawel Jakub Dawidek 
1053c58794deSPawel Jakub Dawidek 	error = g_eli_read_metadata(mp, pp, &md);
1054c58794deSPawel Jakub Dawidek 	if (error != 0)
1055c58794deSPawel Jakub Dawidek 		return (NULL);
1056c58794deSPawel Jakub Dawidek 	gp = NULL;
1057c58794deSPawel Jakub Dawidek 
1058c58794deSPawel Jakub Dawidek 	if (strcmp(md.md_magic, G_ELI_MAGIC) != 0)
1059c58794deSPawel Jakub Dawidek 		return (NULL);
1060c58794deSPawel Jakub Dawidek 	if (md.md_version > G_ELI_VERSION) {
1061c58794deSPawel Jakub Dawidek 		printf("geom_eli.ko module is too old to handle %s.\n",
1062c58794deSPawel Jakub Dawidek 		    pp->name);
1063c58794deSPawel Jakub Dawidek 		return (NULL);
1064c58794deSPawel Jakub Dawidek 	}
1065c58794deSPawel Jakub Dawidek 	if (md.md_provsize != pp->mediasize)
1066c58794deSPawel Jakub Dawidek 		return (NULL);
1067c58794deSPawel Jakub Dawidek 	/* Should we attach it on boot? */
1068eaa3b919SPawel Jakub Dawidek 	if (!(md.md_flags & G_ELI_FLAG_BOOT))
1069c58794deSPawel Jakub Dawidek 		return (NULL);
1070c58794deSPawel Jakub Dawidek 	if (md.md_keys == 0x00) {
1071c58794deSPawel Jakub Dawidek 		G_ELI_DEBUG(0, "No valid keys on %s.", pp->name);
1072c58794deSPawel Jakub Dawidek 		return (NULL);
1073c58794deSPawel Jakub Dawidek 	}
10749af2131bSPawel Jakub Dawidek 	if (md.md_iterations == -1) {
10759af2131bSPawel Jakub Dawidek 		/* If there is no passphrase, we try only once. */
10769af2131bSPawel Jakub Dawidek 		tries = 1;
10779af2131bSPawel Jakub Dawidek 	} else {
10789af2131bSPawel Jakub Dawidek 		/* Ask for the passphrase no more than g_eli_tries times. */
10799af2131bSPawel Jakub Dawidek 		tries = g_eli_tries;
10809af2131bSPawel Jakub Dawidek 	}
10819af2131bSPawel Jakub Dawidek 
1082ec5c0e5bSAllan Jude         if ((keybuf = get_keybuf()) != NULL) {
1083ec5c0e5bSAllan Jude                 /* Scan the key buffer, try all GELI keys. */
1084ec5c0e5bSAllan Jude                 for (i = 0; i < keybuf->kb_nents; i++) {
1085ec5c0e5bSAllan Jude                          if (keybuf->kb_ents[i].ke_type == KEYBUF_TYPE_GELI) {
1086ec5c0e5bSAllan Jude                                  memcpy(key, keybuf->kb_ents[i].ke_data,
1087ec5c0e5bSAllan Jude                                      sizeof(key));
1088ec5c0e5bSAllan Jude 
1089ec5c0e5bSAllan Jude                                  if (g_eli_mkey_decrypt(&md, key,
1090ec5c0e5bSAllan Jude                                      mkey, &nkey) == 0 ) {
1091ec5c0e5bSAllan Jude                                          explicit_bzero(key, sizeof(key));
1092ec5c0e5bSAllan Jude                                          goto have_key;
1093ec5c0e5bSAllan Jude                                  }
1094ec5c0e5bSAllan Jude                          }
1095ec5c0e5bSAllan Jude                 }
1096ec5c0e5bSAllan Jude         }
1097ec5c0e5bSAllan Jude 
1098835c4dd4SColin Percival         for (i = 0; i <= tries; i++) {
10999af2131bSPawel Jakub Dawidek                 g_eli_crypto_hmac_init(&ctx, NULL, 0);
1100c58794deSPawel Jakub Dawidek 
1101c58794deSPawel Jakub Dawidek                 /*
11029af2131bSPawel Jakub Dawidek                  * Load all key files.
1103c58794deSPawel Jakub Dawidek                  */
11049af2131bSPawel Jakub Dawidek                 nkeyfiles = g_eli_keyfiles_load(&ctx, pp->name);
11059af2131bSPawel Jakub Dawidek 
11069af2131bSPawel Jakub Dawidek                 if (nkeyfiles == 0 && md.md_iterations == -1) {
11079af2131bSPawel Jakub Dawidek                         /*
11089af2131bSPawel Jakub Dawidek                          * No key files and no passphrase, something is
11099af2131bSPawel Jakub Dawidek                          * definitely wrong here.
11109af2131bSPawel Jakub Dawidek                          * geli(8) doesn't allow for such situation, so assume
11119af2131bSPawel Jakub Dawidek                          * that there was really no passphrase and in that case
11129af2131bSPawel Jakub Dawidek                          * key files are no properly defined in loader.conf.
11139af2131bSPawel Jakub Dawidek                          */
11149af2131bSPawel Jakub Dawidek                         G_ELI_DEBUG(0,
11159af2131bSPawel Jakub Dawidek                             "Found no key files in loader.conf for %s.",
11169af2131bSPawel Jakub Dawidek                             pp->name);
11179af2131bSPawel Jakub Dawidek                         return (NULL);
11189af2131bSPawel Jakub Dawidek                 }
11199af2131bSPawel Jakub Dawidek 
11209af2131bSPawel Jakub Dawidek                 /* Ask for the passphrase if defined. */
11219af2131bSPawel Jakub Dawidek                 if (md.md_iterations >= 0) {
1122835c4dd4SColin Percival                         /* Try first with cached passphrase. */
1123835c4dd4SColin Percival                         if (i == 0) {
1124835c4dd4SColin Percival                                 if (!g_eli_boot_passcache)
1125835c4dd4SColin Percival                                         continue;
1126835c4dd4SColin Percival                                 memcpy(passphrase, cached_passphrase,
1127835c4dd4SColin Percival                                     sizeof(passphrase));
1128835c4dd4SColin Percival                         } else {
1129c58794deSPawel Jakub Dawidek                                 printf("Enter passphrase for %s: ", pp->name);
11303453dc72SMariusz Zaborski 				showpass = g_eli_visible_passphrase;
11313453dc72SMariusz Zaborski 				if ((md.md_flags & G_ELI_FLAG_GELIDISPLAYPASS) != 0)
11323453dc72SMariusz Zaborski 					showpass = GETS_ECHOPASS;
1133f6ce353eSAndriy Gapon                                 cngets(passphrase, sizeof(passphrase),
11343453dc72SMariusz Zaborski 				    showpass);
1135835c4dd4SColin Percival                                 memcpy(cached_passphrase, passphrase,
1136835c4dd4SColin Percival                                     sizeof(passphrase));
1137835c4dd4SColin Percival                         }
11389af2131bSPawel Jakub Dawidek                 }
11399af2131bSPawel Jakub Dawidek 
1140c58794deSPawel Jakub Dawidek                 /*
1141c58794deSPawel Jakub Dawidek                  * Prepare Derived-Key from the user passphrase.
1142c58794deSPawel Jakub Dawidek                  */
1143c58794deSPawel Jakub Dawidek                 if (md.md_iterations == 0) {
1144c58794deSPawel Jakub Dawidek                         g_eli_crypto_hmac_update(&ctx, md.md_salt,
1145c58794deSPawel Jakub Dawidek                             sizeof(md.md_salt));
1146c58794deSPawel Jakub Dawidek                         g_eli_crypto_hmac_update(&ctx, passphrase,
1147c58794deSPawel Jakub Dawidek                             strlen(passphrase));
1148ec5c0e5bSAllan Jude                         explicit_bzero(passphrase, sizeof(passphrase));
11499af2131bSPawel Jakub Dawidek                 } else if (md.md_iterations > 0) {
1150c58794deSPawel Jakub Dawidek                         u_char dkey[G_ELI_USERKEYLEN];
1151c58794deSPawel Jakub Dawidek 
1152c58794deSPawel Jakub Dawidek                         pkcs5v2_genkey(dkey, sizeof(dkey), md.md_salt,
1153c58794deSPawel Jakub Dawidek                             sizeof(md.md_salt), passphrase, md.md_iterations);
11545527ecd9SPawel Jakub Dawidek                         bzero(passphrase, sizeof(passphrase));
1155c58794deSPawel Jakub Dawidek                         g_eli_crypto_hmac_update(&ctx, dkey, sizeof(dkey));
1156ec5c0e5bSAllan Jude                         explicit_bzero(dkey, sizeof(dkey));
1157c58794deSPawel Jakub Dawidek                 }
11589af2131bSPawel Jakub Dawidek 
1159c58794deSPawel Jakub Dawidek                 g_eli_crypto_hmac_final(&ctx, key, 0);
1160c58794deSPawel Jakub Dawidek 
1161c58794deSPawel Jakub Dawidek                 /*
1162c58794deSPawel Jakub Dawidek                  * Decrypt Master-Key.
1163c58794deSPawel Jakub Dawidek                  */
1164c58794deSPawel Jakub Dawidek                 error = g_eli_mkey_decrypt(&md, key, mkey, &nkey);
1165c58794deSPawel Jakub Dawidek                 bzero(key, sizeof(key));
1166c58794deSPawel Jakub Dawidek                 if (error == -1) {
1167835c4dd4SColin Percival                         if (i == tries) {
11689af2131bSPawel Jakub Dawidek                                 G_ELI_DEBUG(0,
11699af2131bSPawel Jakub Dawidek                                     "Wrong key for %s. No tries left.",
11709af2131bSPawel Jakub Dawidek                                     pp->name);
11719af2131bSPawel Jakub Dawidek                                 g_eli_keyfiles_clear(pp->name);
11729af2131bSPawel Jakub Dawidek                                 return (NULL);
1173c58794deSPawel Jakub Dawidek                         }
1174835c4dd4SColin Percival                         if (i > 0) {
1175835c4dd4SColin Percival                                 G_ELI_DEBUG(0,
1176835c4dd4SColin Percival                                     "Wrong key for %s. Tries left: %u.",
1177835c4dd4SColin Percival                                     pp->name, tries - i);
1178835c4dd4SColin Percival                         }
1179c58794deSPawel Jakub Dawidek                         /* Try again. */
1180c58794deSPawel Jakub Dawidek                         continue;
1181c58794deSPawel Jakub Dawidek                 } else if (error > 0) {
1182038c55adSPawel Jakub Dawidek                         G_ELI_DEBUG(0,
1183038c55adSPawel Jakub Dawidek                             "Cannot decrypt Master Key for %s (error=%d).",
1184c58794deSPawel Jakub Dawidek                             pp->name, error);
11859af2131bSPawel Jakub Dawidek                         g_eli_keyfiles_clear(pp->name);
1186c58794deSPawel Jakub Dawidek                         return (NULL);
1187c58794deSPawel Jakub Dawidek                 }
1188ebd05adaSBrad Davis                 g_eli_keyfiles_clear(pp->name);
1189c58794deSPawel Jakub Dawidek                 G_ELI_DEBUG(1, "Using Master Key %u for %s.", nkey, pp->name);
1190c58794deSPawel Jakub Dawidek                 break;
1191c58794deSPawel Jakub Dawidek         }
1192ec5c0e5bSAllan Jude have_key:
1193c58794deSPawel Jakub Dawidek 
1194c58794deSPawel Jakub Dawidek 	/*
1195c58794deSPawel Jakub Dawidek 	 * We have correct key, let's attach provider.
1196c58794deSPawel Jakub Dawidek 	 */
1197c58794deSPawel Jakub Dawidek 	gp = g_eli_create(NULL, mp, pp, &md, mkey, nkey);
1198c58794deSPawel Jakub Dawidek 	bzero(mkey, sizeof(mkey));
1199c58794deSPawel Jakub Dawidek 	bzero(&md, sizeof(md));
1200c58794deSPawel Jakub Dawidek 	if (gp == NULL) {
1201c58794deSPawel Jakub Dawidek 		G_ELI_DEBUG(0, "Cannot create device %s%s.", pp->name,
1202c58794deSPawel Jakub Dawidek 		    G_ELI_SUFFIX);
1203c58794deSPawel Jakub Dawidek 		return (NULL);
1204c58794deSPawel Jakub Dawidek 	}
1205c58794deSPawel Jakub Dawidek 	return (gp);
1206c58794deSPawel Jakub Dawidek }
1207c58794deSPawel Jakub Dawidek 
1208c58794deSPawel Jakub Dawidek static void
1209c58794deSPawel Jakub Dawidek g_eli_dumpconf(struct sbuf *sb, const char *indent, struct g_geom *gp,
1210c58794deSPawel Jakub Dawidek     struct g_consumer *cp, struct g_provider *pp)
1211c58794deSPawel Jakub Dawidek {
1212c58794deSPawel Jakub Dawidek 	struct g_eli_softc *sc;
1213c58794deSPawel Jakub Dawidek 
1214c58794deSPawel Jakub Dawidek 	g_topology_assert();
1215c58794deSPawel Jakub Dawidek 	sc = gp->softc;
1216c58794deSPawel Jakub Dawidek 	if (sc == NULL)
1217c58794deSPawel Jakub Dawidek 		return;
1218c58794deSPawel Jakub Dawidek 	if (pp != NULL || cp != NULL)
1219c58794deSPawel Jakub Dawidek 		return;	/* Nothing here. */
12201e09ff3dSPawel Jakub Dawidek 
1221743437c4SAndrey V. Elsukov 	sbuf_printf(sb, "%s<KeysTotal>%ju</KeysTotal>\n", indent,
12221e09ff3dSPawel Jakub Dawidek 	    (uintmax_t)sc->sc_ekeys_total);
1223743437c4SAndrey V. Elsukov 	sbuf_printf(sb, "%s<KeysAllocated>%ju</KeysAllocated>\n", indent,
12241e09ff3dSPawel Jakub Dawidek 	    (uintmax_t)sc->sc_ekeys_allocated);
1225ea35a2ecSPawel Jakub Dawidek 	sbuf_printf(sb, "%s<Flags>", indent);
1226ea35a2ecSPawel Jakub Dawidek 	if (sc->sc_flags == 0)
1227ea35a2ecSPawel Jakub Dawidek 		sbuf_printf(sb, "NONE");
1228ea35a2ecSPawel Jakub Dawidek 	else {
1229ea35a2ecSPawel Jakub Dawidek 		int first = 1;
1230ea35a2ecSPawel Jakub Dawidek 
1231ea35a2ecSPawel Jakub Dawidek #define ADD_FLAG(flag, name)	do {					\
1232eaa3b919SPawel Jakub Dawidek 	if (sc->sc_flags & (flag)) {					\
1233ea35a2ecSPawel Jakub Dawidek 		if (!first)						\
1234ea35a2ecSPawel Jakub Dawidek 			sbuf_printf(sb, ", ");				\
1235ea35a2ecSPawel Jakub Dawidek 		else							\
1236ea35a2ecSPawel Jakub Dawidek 			first = 0;					\
1237ea35a2ecSPawel Jakub Dawidek 		sbuf_printf(sb, name);					\
1238ea35a2ecSPawel Jakub Dawidek 	}								\
1239ea35a2ecSPawel Jakub Dawidek } while (0)
12405ad4a7c7SPawel Jakub Dawidek 		ADD_FLAG(G_ELI_FLAG_SUSPEND, "SUSPEND");
1241c6a26d4cSPawel Jakub Dawidek 		ADD_FLAG(G_ELI_FLAG_SINGLE_KEY, "SINGLE-KEY");
12422bd4ade6SPawel Jakub Dawidek 		ADD_FLAG(G_ELI_FLAG_NATIVE_BYTE_ORDER, "NATIVE-BYTE-ORDER");
1243ea35a2ecSPawel Jakub Dawidek 		ADD_FLAG(G_ELI_FLAG_ONETIME, "ONETIME");
1244ea35a2ecSPawel Jakub Dawidek 		ADD_FLAG(G_ELI_FLAG_BOOT, "BOOT");
1245ea35a2ecSPawel Jakub Dawidek 		ADD_FLAG(G_ELI_FLAG_WO_DETACH, "W-DETACH");
1246ea35a2ecSPawel Jakub Dawidek 		ADD_FLAG(G_ELI_FLAG_RW_DETACH, "RW-DETACH");
1247eaa3b919SPawel Jakub Dawidek 		ADD_FLAG(G_ELI_FLAG_AUTH, "AUTH");
1248ea35a2ecSPawel Jakub Dawidek 		ADD_FLAG(G_ELI_FLAG_WOPEN, "W-OPEN");
1249ea35a2ecSPawel Jakub Dawidek 		ADD_FLAG(G_ELI_FLAG_DESTROY, "DESTROY");
125085059016SPawel Jakub Dawidek 		ADD_FLAG(G_ELI_FLAG_RO, "READ-ONLY");
125146e34470SPawel Jakub Dawidek 		ADD_FLAG(G_ELI_FLAG_NODELETE, "NODELETE");
1252d8736625SAllan Jude 		ADD_FLAG(G_ELI_FLAG_GELIBOOT, "GELIBOOT");
12533453dc72SMariusz Zaborski 		ADD_FLAG(G_ELI_FLAG_GELIDISPLAYPASS, "GELIDISPLAYPASS");
1254ea35a2ecSPawel Jakub Dawidek #undef  ADD_FLAG
1255ea35a2ecSPawel Jakub Dawidek 	}
1256ea35a2ecSPawel Jakub Dawidek 	sbuf_printf(sb, "</Flags>\n");
1257ea35a2ecSPawel Jakub Dawidek 
1258eaa3b919SPawel Jakub Dawidek 	if (!(sc->sc_flags & G_ELI_FLAG_ONETIME)) {
1259ea35a2ecSPawel Jakub Dawidek 		sbuf_printf(sb, "%s<UsedKey>%u</UsedKey>\n", indent,
1260ea35a2ecSPawel Jakub Dawidek 		    sc->sc_nkey);
1261ea35a2ecSPawel Jakub Dawidek 	}
12621f8c92e6SPawel Jakub Dawidek 	sbuf_printf(sb, "%s<Version>%u</Version>\n", indent, sc->sc_version);
1263c58794deSPawel Jakub Dawidek 	sbuf_printf(sb, "%s<Crypto>", indent);
1264c58794deSPawel Jakub Dawidek 	switch (sc->sc_crypto) {
1265c58794deSPawel Jakub Dawidek 	case G_ELI_CRYPTO_HW:
1266c58794deSPawel Jakub Dawidek 		sbuf_printf(sb, "hardware");
1267c58794deSPawel Jakub Dawidek 		break;
1268c58794deSPawel Jakub Dawidek 	case G_ELI_CRYPTO_SW:
1269c58794deSPawel Jakub Dawidek 		sbuf_printf(sb, "software");
1270c58794deSPawel Jakub Dawidek 		break;
1271c58794deSPawel Jakub Dawidek 	default:
1272c58794deSPawel Jakub Dawidek 		sbuf_printf(sb, "UNKNOWN");
1273c58794deSPawel Jakub Dawidek 		break;
1274c58794deSPawel Jakub Dawidek 	}
1275c58794deSPawel Jakub Dawidek 	sbuf_printf(sb, "</Crypto>\n");
1276eaa3b919SPawel Jakub Dawidek 	if (sc->sc_flags & G_ELI_FLAG_AUTH) {
1277eaa3b919SPawel Jakub Dawidek 		sbuf_printf(sb,
1278eaa3b919SPawel Jakub Dawidek 		    "%s<AuthenticationAlgorithm>%s</AuthenticationAlgorithm>\n",
1279eaa3b919SPawel Jakub Dawidek 		    indent, g_eli_algo2str(sc->sc_aalgo));
1280eaa3b919SPawel Jakub Dawidek 	}
1281eaa3b919SPawel Jakub Dawidek 	sbuf_printf(sb, "%s<KeyLength>%u</KeyLength>\n", indent,
1282eaa3b919SPawel Jakub Dawidek 	    sc->sc_ekeylen);
1283038c55adSPawel Jakub Dawidek 	sbuf_printf(sb, "%s<EncryptionAlgorithm>%s</EncryptionAlgorithm>\n",
1284038c55adSPawel Jakub Dawidek 	    indent, g_eli_algo2str(sc->sc_ealgo));
1285d8d61ef8SPawel Jakub Dawidek 	sbuf_printf(sb, "%s<State>%s</State>\n", indent,
1286d8d61ef8SPawel Jakub Dawidek 	    (sc->sc_flags & G_ELI_FLAG_SUSPEND) ? "SUSPENDED" : "ACTIVE");
1287c58794deSPawel Jakub Dawidek }
1288c58794deSPawel Jakub Dawidek 
1289c5d387d0SPawel Jakub Dawidek static void
1290c5d387d0SPawel Jakub Dawidek g_eli_shutdown_pre_sync(void *arg, int howto)
1291c5d387d0SPawel Jakub Dawidek {
1292c5d387d0SPawel Jakub Dawidek 	struct g_class *mp;
1293c5d387d0SPawel Jakub Dawidek 	struct g_geom *gp, *gp2;
1294c5d387d0SPawel Jakub Dawidek 	struct g_provider *pp;
1295c5d387d0SPawel Jakub Dawidek 	struct g_eli_softc *sc;
1296c5d387d0SPawel Jakub Dawidek 	int error;
1297c5d387d0SPawel Jakub Dawidek 
1298c5d387d0SPawel Jakub Dawidek 	mp = arg;
1299c5d387d0SPawel Jakub Dawidek 	g_topology_lock();
1300c5d387d0SPawel Jakub Dawidek 	LIST_FOREACH_SAFE(gp, &mp->geom, geom, gp2) {
1301c5d387d0SPawel Jakub Dawidek 		sc = gp->softc;
1302c5d387d0SPawel Jakub Dawidek 		if (sc == NULL)
1303c5d387d0SPawel Jakub Dawidek 			continue;
1304c5d387d0SPawel Jakub Dawidek 		pp = LIST_FIRST(&gp->provider);
1305c5d387d0SPawel Jakub Dawidek 		KASSERT(pp != NULL, ("No provider? gp=%p (%s)", gp, gp->name));
1306c5d387d0SPawel Jakub Dawidek 		if (pp->acr + pp->acw + pp->ace == 0)
13075ad4a7c7SPawel Jakub Dawidek 			error = g_eli_destroy(sc, TRUE);
1308c5d387d0SPawel Jakub Dawidek 		else {
1309c5d387d0SPawel Jakub Dawidek 			sc->sc_flags |= G_ELI_FLAG_RW_DETACH;
1310c5d387d0SPawel Jakub Dawidek 			gp->access = g_eli_access;
1311c5d387d0SPawel Jakub Dawidek 		}
1312c5d387d0SPawel Jakub Dawidek 	}
1313c5d387d0SPawel Jakub Dawidek 	g_topology_unlock();
1314c5d387d0SPawel Jakub Dawidek }
1315c5d387d0SPawel Jakub Dawidek 
1316c5d387d0SPawel Jakub Dawidek static void
1317c5d387d0SPawel Jakub Dawidek g_eli_init(struct g_class *mp)
1318c5d387d0SPawel Jakub Dawidek {
1319c5d387d0SPawel Jakub Dawidek 
1320c5d387d0SPawel Jakub Dawidek 	g_eli_pre_sync = EVENTHANDLER_REGISTER(shutdown_pre_sync,
1321c5d387d0SPawel Jakub Dawidek 	    g_eli_shutdown_pre_sync, mp, SHUTDOWN_PRI_FIRST);
1322c5d387d0SPawel Jakub Dawidek 	if (g_eli_pre_sync == NULL)
1323c5d387d0SPawel Jakub Dawidek 		G_ELI_DEBUG(0, "Warning! Cannot register shutdown event.");
1324c5d387d0SPawel Jakub Dawidek }
1325c5d387d0SPawel Jakub Dawidek 
1326c5d387d0SPawel Jakub Dawidek static void
1327c5d387d0SPawel Jakub Dawidek g_eli_fini(struct g_class *mp)
1328c5d387d0SPawel Jakub Dawidek {
1329c5d387d0SPawel Jakub Dawidek 
1330c5d387d0SPawel Jakub Dawidek 	if (g_eli_pre_sync != NULL)
1331c5d387d0SPawel Jakub Dawidek 		EVENTHANDLER_DEREGISTER(shutdown_pre_sync, g_eli_pre_sync);
1332c5d387d0SPawel Jakub Dawidek }
1333c5d387d0SPawel Jakub Dawidek 
1334c58794deSPawel Jakub Dawidek DECLARE_GEOM_CLASS(g_eli_class, g_eli);
1335f6829a05SYaroslav Tykhiy MODULE_DEPEND(g_eli, crypto, 1, 1, 1);
1336