1*59c8e88eSDag-Erling Smørgrav/* $OpenBSD: softraid_crypto.c,v 1.139 2020/07/13 00:06:22 kn Exp $ */ 2*59c8e88eSDag-Erling Smørgrav/* 3*59c8e88eSDag-Erling Smørgrav * Copyright (c) 2007 Marco Peereboom <marco@peereboom.us> 4*59c8e88eSDag-Erling Smørgrav * Copyright (c) 2008 Hans-Joerg Hoexer <hshoexer@openbsd.org> 5*59c8e88eSDag-Erling Smørgrav * Copyright (c) 2008 Damien Miller <djm@mindrot.org> 6*59c8e88eSDag-Erling Smørgrav * Copyright (c) 2009 Joel Sing <jsing@openbsd.org> 7*59c8e88eSDag-Erling Smørgrav * 8*59c8e88eSDag-Erling Smørgrav * Permission to use, copy, modify, and distribute this software for any 9*59c8e88eSDag-Erling Smørgrav * purpose with or without fee is hereby granted, provided that the above 10*59c8e88eSDag-Erling Smørgrav * copyright notice and this permission notice appear in all copies. 11*59c8e88eSDag-Erling Smørgrav * 12*59c8e88eSDag-Erling Smørgrav * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 13*59c8e88eSDag-Erling Smørgrav * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 14*59c8e88eSDag-Erling Smørgrav * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 15*59c8e88eSDag-Erling Smørgrav * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 16*59c8e88eSDag-Erling Smørgrav * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 17*59c8e88eSDag-Erling Smørgrav * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 18*59c8e88eSDag-Erling Smørgrav * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 19*59c8e88eSDag-Erling Smørgrav */ 20*59c8e88eSDag-Erling Smørgrav 21*59c8e88eSDag-Erling Smørgrav#include "bio.h" 22*59c8e88eSDag-Erling Smørgrav 23*59c8e88eSDag-Erling Smørgrav#include <sys/param.h> 24*59c8e88eSDag-Erling Smørgrav#include <sys/systm.h> 25*59c8e88eSDag-Erling Smørgrav#include <sys/buf.h> 26*59c8e88eSDag-Erling Smørgrav#include <sys/device.h> 27*59c8e88eSDag-Erling Smørgrav#include <sys/ioctl.h> 28*59c8e88eSDag-Erling Smørgrav#include <sys/malloc.h> 29*59c8e88eSDag-Erling Smørgrav#include <sys/pool.h> 30*59c8e88eSDag-Erling Smørgrav#include <sys/kernel.h> 31*59c8e88eSDag-Erling Smørgrav#include <sys/disk.h> 32*59c8e88eSDag-Erling Smørgrav#include <sys/rwlock.h> 33*59c8e88eSDag-Erling Smørgrav#include <sys/queue.h> 34*59c8e88eSDag-Erling Smørgrav#include <sys/fcntl.h> 35*59c8e88eSDag-Erling Smørgrav#include <sys/disklabel.h> 36*59c8e88eSDag-Erling Smørgrav#include <sys/vnode.h> 37*59c8e88eSDag-Erling Smørgrav#include <sys/mount.h> 38*59c8e88eSDag-Erling Smørgrav#include <sys/sensors.h> 39*59c8e88eSDag-Erling Smørgrav#include <sys/stat.h> 40*59c8e88eSDag-Erling Smørgrav#include <sys/conf.h> 41*59c8e88eSDag-Erling Smørgrav#include <sys/uio.h> 42*59c8e88eSDag-Erling Smørgrav#include <sys/dkio.h> 43*59c8e88eSDag-Erling Smørgrav 44*59c8e88eSDag-Erling Smørgrav#include <crypto/cryptodev.h> 45*59c8e88eSDag-Erling Smørgrav#include <crypto/rijndael.h> 46*59c8e88eSDag-Erling Smørgrav#include <crypto/md5.h> 47*59c8e88eSDag-Erling Smørgrav#include <crypto/sha1.h> 48*59c8e88eSDag-Erling Smørgrav#include <crypto/sha2.h> 49*59c8e88eSDag-Erling Smørgrav#include <crypto/hmac.h> 50*59c8e88eSDag-Erling Smørgrav 51*59c8e88eSDag-Erling Smørgrav#include <scsi/scsi_all.h> 52*59c8e88eSDag-Erling Smørgrav#include <scsi/scsiconf.h> 53*59c8e88eSDag-Erling Smørgrav#include <scsi/scsi_disk.h> 54*59c8e88eSDag-Erling Smørgrav 55*59c8e88eSDag-Erling Smørgrav#include <dev/softraidvar.h> 56*59c8e88eSDag-Erling Smørgrav 57*59c8e88eSDag-Erling Smørgrav/* 58*59c8e88eSDag-Erling Smørgrav * The per-I/O data that we need to preallocate. We cannot afford to allow I/O 59*59c8e88eSDag-Erling Smørgrav * to start failing when memory pressure kicks in. We can store this in the WU 60*59c8e88eSDag-Erling Smørgrav * because we assert that only one ccb per WU will ever be active. 61*59c8e88eSDag-Erling Smørgrav */ 62*59c8e88eSDag-Erling Smørgravstruct sr_crypto_wu { 63*59c8e88eSDag-Erling Smørgrav struct sr_workunit cr_wu; /* Must be first. */ 64*59c8e88eSDag-Erling Smørgrav struct uio cr_uio; 65*59c8e88eSDag-Erling Smørgrav struct iovec cr_iov; 66*59c8e88eSDag-Erling Smørgrav struct cryptop *cr_crp; 67*59c8e88eSDag-Erling Smørgrav void *cr_dmabuf; 68*59c8e88eSDag-Erling Smørgrav}; 69*59c8e88eSDag-Erling Smørgrav 70*59c8e88eSDag-Erling Smørgrav 71*59c8e88eSDag-Erling Smørgravstruct sr_crypto_wu *sr_crypto_prepare(struct sr_workunit *, int); 72*59c8e88eSDag-Erling Smørgravint sr_crypto_create_keys(struct sr_discipline *); 73*59c8e88eSDag-Erling Smørgravint sr_crypto_get_kdf(struct bioc_createraid *, 74*59c8e88eSDag-Erling Smørgrav struct sr_discipline *); 75*59c8e88eSDag-Erling Smørgravint sr_crypto_decrypt(u_char *, u_char *, u_char *, size_t, int); 76*59c8e88eSDag-Erling Smørgravint sr_crypto_encrypt(u_char *, u_char *, u_char *, size_t, int); 77*59c8e88eSDag-Erling Smørgravint sr_crypto_decrypt_key(struct sr_discipline *); 78*59c8e88eSDag-Erling Smørgravint sr_crypto_change_maskkey(struct sr_discipline *, 79*59c8e88eSDag-Erling Smørgrav struct sr_crypto_kdfinfo *, struct sr_crypto_kdfinfo *); 80*59c8e88eSDag-Erling Smørgravint sr_crypto_create(struct sr_discipline *, 81*59c8e88eSDag-Erling Smørgrav struct bioc_createraid *, int, int64_t); 82*59c8e88eSDag-Erling Smørgravint sr_crypto_assemble(struct sr_discipline *, 83*59c8e88eSDag-Erling Smørgrav struct bioc_createraid *, int, void *); 84*59c8e88eSDag-Erling Smørgravint sr_crypto_alloc_resources(struct sr_discipline *); 85*59c8e88eSDag-Erling Smørgravvoid sr_crypto_free_resources(struct sr_discipline *); 86*59c8e88eSDag-Erling Smørgravint sr_crypto_ioctl(struct sr_discipline *, 87*59c8e88eSDag-Erling Smørgrav struct bioc_discipline *); 88*59c8e88eSDag-Erling Smørgravint sr_crypto_meta_opt_handler(struct sr_discipline *, 89*59c8e88eSDag-Erling Smørgrav struct sr_meta_opt_hdr *); 90*59c8e88eSDag-Erling Smørgravvoid sr_crypto_write(struct cryptop *); 91*59c8e88eSDag-Erling Smørgravint sr_crypto_rw(struct sr_workunit *); 92*59c8e88eSDag-Erling Smørgravint sr_crypto_dev_rw(struct sr_workunit *, struct sr_crypto_wu *); 93*59c8e88eSDag-Erling Smørgravvoid sr_crypto_done(struct sr_workunit *); 94*59c8e88eSDag-Erling Smørgravvoid sr_crypto_read(struct cryptop *); 95*59c8e88eSDag-Erling Smørgravvoid sr_crypto_calculate_check_hmac_sha1(u_int8_t *, int, 96*59c8e88eSDag-Erling Smørgrav u_int8_t *, int, u_char *); 97*59c8e88eSDag-Erling Smørgravvoid sr_crypto_hotplug(struct sr_discipline *, struct disk *, int); 98*59c8e88eSDag-Erling Smørgrav 99*59c8e88eSDag-Erling Smørgrav#ifdef SR_DEBUG0 100*59c8e88eSDag-Erling Smørgravvoid sr_crypto_dumpkeys(struct sr_discipline *); 101*59c8e88eSDag-Erling Smørgrav#endif 102*59c8e88eSDag-Erling Smørgrav 103*59c8e88eSDag-Erling Smørgrav/* Discipline initialisation. */ 104*59c8e88eSDag-Erling Smørgravvoid 105*59c8e88eSDag-Erling Smørgravsr_crypto_discipline_init(struct sr_discipline *sd) 106*59c8e88eSDag-Erling Smørgrav{ 107*59c8e88eSDag-Erling Smørgrav int i; 108*59c8e88eSDag-Erling Smørgrav 109*59c8e88eSDag-Erling Smørgrav /* Fill out discipline members. */ 110*59c8e88eSDag-Erling Smørgrav sd->sd_wu_size = sizeof(struct sr_crypto_wu); 111*59c8e88eSDag-Erling Smørgrav sd->sd_type = SR_MD_CRYPTO; 112*59c8e88eSDag-Erling Smørgrav strlcpy(sd->sd_name, "CRYPTO", sizeof(sd->sd_name)); 113*59c8e88eSDag-Erling Smørgrav sd->sd_capabilities = SR_CAP_SYSTEM_DISK | SR_CAP_AUTO_ASSEMBLE; 114*59c8e88eSDag-Erling Smørgrav sd->sd_max_wu = SR_CRYPTO_NOWU; 115*59c8e88eSDag-Erling Smørgrav 116*59c8e88eSDag-Erling Smørgrav for (i = 0; i < SR_CRYPTO_MAXKEYS; i++) 117*59c8e88eSDag-Erling Smørgrav sd->mds.mdd_crypto.scr_sid[i] = (u_int64_t)-1; 118*59c8e88eSDag-Erling Smørgrav 119*59c8e88eSDag-Erling Smørgrav /* Setup discipline specific function pointers. */ 120*59c8e88eSDag-Erling Smørgrav sd->sd_alloc_resources = sr_crypto_alloc_resources; 121*59c8e88eSDag-Erling Smørgrav sd->sd_assemble = sr_crypto_assemble; 122*59c8e88eSDag-Erling Smørgrav sd->sd_create = sr_crypto_create; 123*59c8e88eSDag-Erling Smørgrav sd->sd_free_resources = sr_crypto_free_resources; 124*59c8e88eSDag-Erling Smørgrav sd->sd_ioctl_handler = sr_crypto_ioctl; 125*59c8e88eSDag-Erling Smørgrav sd->sd_meta_opt_handler = sr_crypto_meta_opt_handler; 126*59c8e88eSDag-Erling Smørgrav sd->sd_scsi_rw = sr_crypto_rw; 127*59c8e88eSDag-Erling Smørgrav sd->sd_scsi_done = sr_crypto_done; 128*59c8e88eSDag-Erling Smørgrav} 129*59c8e88eSDag-Erling Smørgrav 130*59c8e88eSDag-Erling Smørgravint 131*59c8e88eSDag-Erling Smørgravsr_crypto_create(struct sr_discipline *sd, struct bioc_createraid *bc, 132*59c8e88eSDag-Erling Smørgrav int no_chunk, int64_t coerced_size) 133*59c8e88eSDag-Erling Smørgrav{ 134*59c8e88eSDag-Erling Smørgrav struct sr_meta_opt_item *omi; 135*59c8e88eSDag-Erling Smørgrav int rv = EINVAL; 136*59c8e88eSDag-Erling Smørgrav 137*59c8e88eSDag-Erling Smørgrav if (no_chunk != 1) { 138*59c8e88eSDag-Erling Smørgrav sr_error(sd->sd_sc, "%s requires exactly one chunk", 139*59c8e88eSDag-Erling Smørgrav sd->sd_name); 140*59c8e88eSDag-Erling Smørgrav goto done; 141*59c8e88eSDag-Erling Smørgrav } 142*59c8e88eSDag-Erling Smørgrav 143*59c8e88eSDag-Erling Smørgrav if (coerced_size > SR_CRYPTO_MAXSIZE) { 144*59c8e88eSDag-Erling Smørgrav sr_error(sd->sd_sc, "%s exceeds maximum size (%lli > %llu)", 145*59c8e88eSDag-Erling Smørgrav sd->sd_name, coerced_size, SR_CRYPTO_MAXSIZE); 146*59c8e88eSDag-Erling Smørgrav goto done; 147*59c8e88eSDag-Erling Smørgrav } 148*59c8e88eSDag-Erling Smørgrav 149*59c8e88eSDag-Erling Smørgrav /* Create crypto optional metadata. */ 150*59c8e88eSDag-Erling Smørgrav omi = malloc(sizeof(struct sr_meta_opt_item), M_DEVBUF, 151*59c8e88eSDag-Erling Smørgrav M_WAITOK | M_ZERO); 152*59c8e88eSDag-Erling Smørgrav omi->omi_som = malloc(sizeof(struct sr_meta_crypto), M_DEVBUF, 153*59c8e88eSDag-Erling Smørgrav M_WAITOK | M_ZERO); 154*59c8e88eSDag-Erling Smørgrav omi->omi_som->som_type = SR_OPT_CRYPTO; 155*59c8e88eSDag-Erling Smørgrav omi->omi_som->som_length = sizeof(struct sr_meta_crypto); 156*59c8e88eSDag-Erling Smørgrav SLIST_INSERT_HEAD(&sd->sd_meta_opt, omi, omi_link); 157*59c8e88eSDag-Erling Smørgrav sd->mds.mdd_crypto.scr_meta = (struct sr_meta_crypto *)omi->omi_som; 158*59c8e88eSDag-Erling Smørgrav sd->sd_meta->ssdi.ssd_opt_no++; 159*59c8e88eSDag-Erling Smørgrav 160*59c8e88eSDag-Erling Smørgrav sd->mds.mdd_crypto.key_disk = NULL; 161*59c8e88eSDag-Erling Smørgrav 162*59c8e88eSDag-Erling Smørgrav if (bc->bc_key_disk != NODEV) { 163*59c8e88eSDag-Erling Smørgrav 164*59c8e88eSDag-Erling Smørgrav /* Create a key disk. */ 165*59c8e88eSDag-Erling Smørgrav if (sr_crypto_get_kdf(bc, sd)) 166*59c8e88eSDag-Erling Smørgrav goto done; 167*59c8e88eSDag-Erling Smørgrav sd->mds.mdd_crypto.key_disk = 168*59c8e88eSDag-Erling Smørgrav sr_crypto_create_key_disk(sd, bc->bc_key_disk); 169*59c8e88eSDag-Erling Smørgrav if (sd->mds.mdd_crypto.key_disk == NULL) 170*59c8e88eSDag-Erling Smørgrav goto done; 171*59c8e88eSDag-Erling Smørgrav sd->sd_capabilities |= SR_CAP_AUTO_ASSEMBLE; 172*59c8e88eSDag-Erling Smørgrav 173*59c8e88eSDag-Erling Smørgrav } else if (bc->bc_opaque_flags & BIOC_SOOUT) { 174*59c8e88eSDag-Erling Smørgrav 175*59c8e88eSDag-Erling Smørgrav /* No hint available yet. */ 176*59c8e88eSDag-Erling Smørgrav bc->bc_opaque_status = BIOC_SOINOUT_FAILED; 177*59c8e88eSDag-Erling Smørgrav rv = EAGAIN; 178*59c8e88eSDag-Erling Smørgrav goto done; 179*59c8e88eSDag-Erling Smørgrav 180*59c8e88eSDag-Erling Smørgrav } else if (sr_crypto_get_kdf(bc, sd)) 181*59c8e88eSDag-Erling Smørgrav goto done; 182*59c8e88eSDag-Erling Smørgrav 183*59c8e88eSDag-Erling Smørgrav /* Passphrase volumes cannot be automatically assembled. */ 184*59c8e88eSDag-Erling Smørgrav if (!(bc->bc_flags & BIOC_SCNOAUTOASSEMBLE) && bc->bc_key_disk == NODEV) 185*59c8e88eSDag-Erling Smørgrav goto done; 186*59c8e88eSDag-Erling Smørgrav 187*59c8e88eSDag-Erling Smørgrav sd->sd_meta->ssdi.ssd_size = coerced_size; 188*59c8e88eSDag-Erling Smørgrav 189*59c8e88eSDag-Erling Smørgrav sr_crypto_create_keys(sd); 190*59c8e88eSDag-Erling Smørgrav 191*59c8e88eSDag-Erling Smørgrav sd->sd_max_ccb_per_wu = no_chunk; 192*59c8e88eSDag-Erling Smørgrav 193*59c8e88eSDag-Erling Smørgrav rv = 0; 194*59c8e88eSDag-Erling Smørgravdone: 195*59c8e88eSDag-Erling Smørgrav return (rv); 196*59c8e88eSDag-Erling Smørgrav} 197*59c8e88eSDag-Erling Smørgrav 198*59c8e88eSDag-Erling Smørgravint 199*59c8e88eSDag-Erling Smørgravsr_crypto_assemble(struct sr_discipline *sd, struct bioc_createraid *bc, 200*59c8e88eSDag-Erling Smørgrav int no_chunk, void *data) 201*59c8e88eSDag-Erling Smørgrav{ 202*59c8e88eSDag-Erling Smørgrav int rv = EINVAL; 203*59c8e88eSDag-Erling Smørgrav 204*59c8e88eSDag-Erling Smørgrav sd->mds.mdd_crypto.key_disk = NULL; 205*59c8e88eSDag-Erling Smørgrav 206*59c8e88eSDag-Erling Smørgrav /* Crypto optional metadata must already exist... */ 207*59c8e88eSDag-Erling Smørgrav if (sd->mds.mdd_crypto.scr_meta == NULL) 208*59c8e88eSDag-Erling Smørgrav goto done; 209*59c8e88eSDag-Erling Smørgrav 210*59c8e88eSDag-Erling Smørgrav if (data != NULL) { 211*59c8e88eSDag-Erling Smørgrav /* Kernel already has mask key. */ 212*59c8e88eSDag-Erling Smørgrav memcpy(sd->mds.mdd_crypto.scr_maskkey, data, 213*59c8e88eSDag-Erling Smørgrav sizeof(sd->mds.mdd_crypto.scr_maskkey)); 214*59c8e88eSDag-Erling Smørgrav } else if (bc->bc_key_disk != NODEV) { 215*59c8e88eSDag-Erling Smørgrav /* Read the mask key from the key disk. */ 216*59c8e88eSDag-Erling Smørgrav sd->mds.mdd_crypto.key_disk = 217*59c8e88eSDag-Erling Smørgrav sr_crypto_read_key_disk(sd, bc->bc_key_disk); 218*59c8e88eSDag-Erling Smørgrav if (sd->mds.mdd_crypto.key_disk == NULL) 219*59c8e88eSDag-Erling Smørgrav goto done; 220*59c8e88eSDag-Erling Smørgrav } else if (bc->bc_opaque_flags & BIOC_SOOUT) { 221*59c8e88eSDag-Erling Smørgrav /* provide userland with kdf hint */ 222*59c8e88eSDag-Erling Smørgrav if (bc->bc_opaque == NULL) 223*59c8e88eSDag-Erling Smørgrav goto done; 224*59c8e88eSDag-Erling Smørgrav 225*59c8e88eSDag-Erling Smørgrav if (sizeof(sd->mds.mdd_crypto.scr_meta->scm_kdfhint) < 226*59c8e88eSDag-Erling Smørgrav bc->bc_opaque_size) 227*59c8e88eSDag-Erling Smørgrav goto done; 228*59c8e88eSDag-Erling Smørgrav 229*59c8e88eSDag-Erling Smørgrav if (copyout(sd->mds.mdd_crypto.scr_meta->scm_kdfhint, 230*59c8e88eSDag-Erling Smørgrav bc->bc_opaque, bc->bc_opaque_size)) 231*59c8e88eSDag-Erling Smørgrav goto done; 232*59c8e88eSDag-Erling Smørgrav 233*59c8e88eSDag-Erling Smørgrav /* we're done */ 234*59c8e88eSDag-Erling Smørgrav bc->bc_opaque_status = BIOC_SOINOUT_OK; 235*59c8e88eSDag-Erling Smørgrav rv = EAGAIN; 236*59c8e88eSDag-Erling Smørgrav goto done; 237*59c8e88eSDag-Erling Smørgrav } else if (bc->bc_opaque_flags & BIOC_SOIN) { 238*59c8e88eSDag-Erling Smørgrav /* get kdf with maskkey from userland */ 239*59c8e88eSDag-Erling Smørgrav if (sr_crypto_get_kdf(bc, sd)) 240*59c8e88eSDag-Erling Smørgrav goto done; 241*59c8e88eSDag-Erling Smørgrav } else 242*59c8e88eSDag-Erling Smørgrav goto done; 243*59c8e88eSDag-Erling Smørgrav 244*59c8e88eSDag-Erling Smørgrav sd->sd_max_ccb_per_wu = sd->sd_meta->ssdi.ssd_chunk_no; 245*59c8e88eSDag-Erling Smørgrav 246*59c8e88eSDag-Erling Smørgrav rv = 0; 247*59c8e88eSDag-Erling Smørgravdone: 248*59c8e88eSDag-Erling Smørgrav return (rv); 249*59c8e88eSDag-Erling Smørgrav} 250*59c8e88eSDag-Erling Smørgrav 251*59c8e88eSDag-Erling Smørgravstruct sr_crypto_wu * 252*59c8e88eSDag-Erling Smørgravsr_crypto_prepare(struct sr_workunit *wu, int encrypt) 253*59c8e88eSDag-Erling Smørgrav{ 254*59c8e88eSDag-Erling Smørgrav struct scsi_xfer *xs = wu->swu_xs; 255*59c8e88eSDag-Erling Smørgrav struct sr_discipline *sd = wu->swu_dis; 256*59c8e88eSDag-Erling Smørgrav struct sr_crypto_wu *crwu; 257*59c8e88eSDag-Erling Smørgrav struct cryptodesc *crd; 258*59c8e88eSDag-Erling Smørgrav int flags, i, n; 259*59c8e88eSDag-Erling Smørgrav daddr_t blkno; 260*59c8e88eSDag-Erling Smørgrav u_int keyndx; 261*59c8e88eSDag-Erling Smørgrav 262*59c8e88eSDag-Erling Smørgrav DNPRINTF(SR_D_DIS, "%s: sr_crypto_prepare wu %p encrypt %d\n", 263*59c8e88eSDag-Erling Smørgrav DEVNAME(sd->sd_sc), wu, encrypt); 264*59c8e88eSDag-Erling Smørgrav 265*59c8e88eSDag-Erling Smørgrav crwu = (struct sr_crypto_wu *)wu; 266*59c8e88eSDag-Erling Smørgrav crwu->cr_uio.uio_iovcnt = 1; 267*59c8e88eSDag-Erling Smørgrav crwu->cr_uio.uio_iov->iov_len = xs->datalen; 268*59c8e88eSDag-Erling Smørgrav if (xs->flags & SCSI_DATA_OUT) { 269*59c8e88eSDag-Erling Smørgrav crwu->cr_uio.uio_iov->iov_base = crwu->cr_dmabuf; 270*59c8e88eSDag-Erling Smørgrav memcpy(crwu->cr_uio.uio_iov->iov_base, xs->data, xs->datalen); 271*59c8e88eSDag-Erling Smørgrav } else 272*59c8e88eSDag-Erling Smørgrav crwu->cr_uio.uio_iov->iov_base = xs->data; 273*59c8e88eSDag-Erling Smørgrav 274*59c8e88eSDag-Erling Smørgrav blkno = wu->swu_blk_start; 275*59c8e88eSDag-Erling Smørgrav n = xs->datalen >> DEV_BSHIFT; 276*59c8e88eSDag-Erling Smørgrav 277*59c8e88eSDag-Erling Smørgrav /* 278*59c8e88eSDag-Erling Smørgrav * We preallocated enough crypto descs for up to MAXPHYS of I/O. 279*59c8e88eSDag-Erling Smørgrav * Since there may be less than that we need to tweak the amount 280*59c8e88eSDag-Erling Smørgrav * of crypto desc structures to be just long enough for our needs. 281*59c8e88eSDag-Erling Smørgrav */ 282*59c8e88eSDag-Erling Smørgrav KASSERT(crwu->cr_crp->crp_ndescalloc >= n); 283*59c8e88eSDag-Erling Smørgrav crwu->cr_crp->crp_ndesc = n; 284*59c8e88eSDag-Erling Smørgrav flags = (encrypt ? CRD_F_ENCRYPT : 0) | 285*59c8e88eSDag-Erling Smørgrav CRD_F_IV_PRESENT | CRD_F_IV_EXPLICIT; 286*59c8e88eSDag-Erling Smørgrav 287*59c8e88eSDag-Erling Smørgrav /* 288*59c8e88eSDag-Erling Smørgrav * Select crypto session based on block number. 289*59c8e88eSDag-Erling Smørgrav * 290*59c8e88eSDag-Erling Smørgrav * XXX - this does not handle the case where the read/write spans 291*59c8e88eSDag-Erling Smørgrav * across a different key blocks (e.g. 0.5TB boundary). Currently 292*59c8e88eSDag-Erling Smørgrav * this is already broken by the use of scr_key[0] below. 293*59c8e88eSDag-Erling Smørgrav */ 294*59c8e88eSDag-Erling Smørgrav keyndx = blkno >> SR_CRYPTO_KEY_BLKSHIFT; 295*59c8e88eSDag-Erling Smørgrav crwu->cr_crp->crp_sid = sd->mds.mdd_crypto.scr_sid[keyndx]; 296*59c8e88eSDag-Erling Smørgrav 297*59c8e88eSDag-Erling Smørgrav crwu->cr_crp->crp_opaque = crwu; 298*59c8e88eSDag-Erling Smørgrav crwu->cr_crp->crp_ilen = xs->datalen; 299*59c8e88eSDag-Erling Smørgrav crwu->cr_crp->crp_alloctype = M_DEVBUF; 300*59c8e88eSDag-Erling Smørgrav crwu->cr_crp->crp_flags = CRYPTO_F_IOV | CRYPTO_F_NOQUEUE; 301*59c8e88eSDag-Erling Smørgrav crwu->cr_crp->crp_buf = &crwu->cr_uio; 302*59c8e88eSDag-Erling Smørgrav for (i = 0; i < crwu->cr_crp->crp_ndesc; i++, blkno++) { 303*59c8e88eSDag-Erling Smørgrav crd = &crwu->cr_crp->crp_desc[i]; 304*59c8e88eSDag-Erling Smørgrav crd->crd_skip = i << DEV_BSHIFT; 305*59c8e88eSDag-Erling Smørgrav crd->crd_len = DEV_BSIZE; 306*59c8e88eSDag-Erling Smørgrav crd->crd_inject = 0; 307*59c8e88eSDag-Erling Smørgrav crd->crd_flags = flags; 308*59c8e88eSDag-Erling Smørgrav crd->crd_alg = sd->mds.mdd_crypto.scr_alg; 309*59c8e88eSDag-Erling Smørgrav crd->crd_klen = sd->mds.mdd_crypto.scr_klen; 310*59c8e88eSDag-Erling Smørgrav crd->crd_key = sd->mds.mdd_crypto.scr_key[0]; 311*59c8e88eSDag-Erling Smørgrav memcpy(crd->crd_iv, &blkno, sizeof(blkno)); 312*59c8e88eSDag-Erling Smørgrav } 313*59c8e88eSDag-Erling Smørgrav 314*59c8e88eSDag-Erling Smørgrav return (crwu); 315*59c8e88eSDag-Erling Smørgrav} 316*59c8e88eSDag-Erling Smørgrav 317*59c8e88eSDag-Erling Smørgravint 318*59c8e88eSDag-Erling Smørgravsr_crypto_get_kdf(struct bioc_createraid *bc, struct sr_discipline *sd) 319*59c8e88eSDag-Erling Smørgrav{ 320*59c8e88eSDag-Erling Smørgrav int rv = EINVAL; 321*59c8e88eSDag-Erling Smørgrav struct sr_crypto_kdfinfo *kdfinfo; 322*59c8e88eSDag-Erling Smørgrav 323*59c8e88eSDag-Erling Smørgrav if (!(bc->bc_opaque_flags & BIOC_SOIN)) 324*59c8e88eSDag-Erling Smørgrav return (rv); 325*59c8e88eSDag-Erling Smørgrav if (bc->bc_opaque == NULL) 326*59c8e88eSDag-Erling Smørgrav return (rv); 327*59c8e88eSDag-Erling Smørgrav if (bc->bc_opaque_size != sizeof(*kdfinfo)) 328*59c8e88eSDag-Erling Smørgrav return (rv); 329*59c8e88eSDag-Erling Smørgrav 330*59c8e88eSDag-Erling Smørgrav kdfinfo = malloc(bc->bc_opaque_size, M_DEVBUF, M_WAITOK | M_ZERO); 331*59c8e88eSDag-Erling Smørgrav if (copyin(bc->bc_opaque, kdfinfo, bc->bc_opaque_size)) 332*59c8e88eSDag-Erling Smørgrav goto out; 333*59c8e88eSDag-Erling Smørgrav 334*59c8e88eSDag-Erling Smørgrav if (kdfinfo->len != bc->bc_opaque_size) 335*59c8e88eSDag-Erling Smørgrav goto out; 336*59c8e88eSDag-Erling Smørgrav 337*59c8e88eSDag-Erling Smørgrav /* copy KDF hint to disk meta data */ 338*59c8e88eSDag-Erling Smørgrav if (kdfinfo->flags & SR_CRYPTOKDF_HINT) { 339*59c8e88eSDag-Erling Smørgrav if (sizeof(sd->mds.mdd_crypto.scr_meta->scm_kdfhint) < 340*59c8e88eSDag-Erling Smørgrav kdfinfo->genkdf.len) 341*59c8e88eSDag-Erling Smørgrav goto out; 342*59c8e88eSDag-Erling Smørgrav memcpy(sd->mds.mdd_crypto.scr_meta->scm_kdfhint, 343*59c8e88eSDag-Erling Smørgrav &kdfinfo->genkdf, kdfinfo->genkdf.len); 344*59c8e88eSDag-Erling Smørgrav } 345*59c8e88eSDag-Erling Smørgrav 346*59c8e88eSDag-Erling Smørgrav /* copy mask key to run-time meta data */ 347*59c8e88eSDag-Erling Smørgrav if ((kdfinfo->flags & SR_CRYPTOKDF_KEY)) { 348*59c8e88eSDag-Erling Smørgrav if (sizeof(sd->mds.mdd_crypto.scr_maskkey) < 349*59c8e88eSDag-Erling Smørgrav sizeof(kdfinfo->maskkey)) 350*59c8e88eSDag-Erling Smørgrav goto out; 351*59c8e88eSDag-Erling Smørgrav memcpy(sd->mds.mdd_crypto.scr_maskkey, &kdfinfo->maskkey, 352*59c8e88eSDag-Erling Smørgrav sizeof(kdfinfo->maskkey)); 353*59c8e88eSDag-Erling Smørgrav } 354*59c8e88eSDag-Erling Smørgrav 355*59c8e88eSDag-Erling Smørgrav bc->bc_opaque_status = BIOC_SOINOUT_OK; 356*59c8e88eSDag-Erling Smørgrav rv = 0; 357*59c8e88eSDag-Erling Smørgravout: 358*59c8e88eSDag-Erling Smørgrav explicit_bzero(kdfinfo, bc->bc_opaque_size); 359*59c8e88eSDag-Erling Smørgrav free(kdfinfo, M_DEVBUF, bc->bc_opaque_size); 360*59c8e88eSDag-Erling Smørgrav 361*59c8e88eSDag-Erling Smørgrav return (rv); 362*59c8e88eSDag-Erling Smørgrav} 363*59c8e88eSDag-Erling Smørgrav 364*59c8e88eSDag-Erling Smørgravint 365*59c8e88eSDag-Erling Smørgravsr_crypto_encrypt(u_char *p, u_char *c, u_char *key, size_t size, int alg) 366*59c8e88eSDag-Erling Smørgrav{ 367*59c8e88eSDag-Erling Smørgrav rijndael_ctx ctx; 368*59c8e88eSDag-Erling Smørgrav int i, rv = 1; 369*59c8e88eSDag-Erling Smørgrav 370*59c8e88eSDag-Erling Smørgrav switch (alg) { 371*59c8e88eSDag-Erling Smørgrav case SR_CRYPTOM_AES_ECB_256: 372*59c8e88eSDag-Erling Smørgrav if (rijndael_set_key_enc_only(&ctx, key, 256) != 0) 373*59c8e88eSDag-Erling Smørgrav goto out; 374*59c8e88eSDag-Erling Smørgrav for (i = 0; i < size; i += RIJNDAEL128_BLOCK_LEN) 375*59c8e88eSDag-Erling Smørgrav rijndael_encrypt(&ctx, &p[i], &c[i]); 376*59c8e88eSDag-Erling Smørgrav rv = 0; 377*59c8e88eSDag-Erling Smørgrav break; 378*59c8e88eSDag-Erling Smørgrav default: 379*59c8e88eSDag-Erling Smørgrav DNPRINTF(SR_D_DIS, "%s: unsupported encryption algorithm %d\n", 380*59c8e88eSDag-Erling Smørgrav "softraid", alg); 381*59c8e88eSDag-Erling Smørgrav rv = -1; 382*59c8e88eSDag-Erling Smørgrav goto out; 383*59c8e88eSDag-Erling Smørgrav } 384*59c8e88eSDag-Erling Smørgrav 385*59c8e88eSDag-Erling Smørgravout: 386*59c8e88eSDag-Erling Smørgrav explicit_bzero(&ctx, sizeof(ctx)); 387*59c8e88eSDag-Erling Smørgrav return (rv); 388*59c8e88eSDag-Erling Smørgrav} 389*59c8e88eSDag-Erling Smørgrav 390*59c8e88eSDag-Erling Smørgravint 391*59c8e88eSDag-Erling Smørgravsr_crypto_decrypt(u_char *c, u_char *p, u_char *key, size_t size, int alg) 392*59c8e88eSDag-Erling Smørgrav{ 393*59c8e88eSDag-Erling Smørgrav rijndael_ctx ctx; 394*59c8e88eSDag-Erling Smørgrav int i, rv = 1; 395*59c8e88eSDag-Erling Smørgrav 396*59c8e88eSDag-Erling Smørgrav switch (alg) { 397*59c8e88eSDag-Erling Smørgrav case SR_CRYPTOM_AES_ECB_256: 398*59c8e88eSDag-Erling Smørgrav if (rijndael_set_key(&ctx, key, 256) != 0) 399*59c8e88eSDag-Erling Smørgrav goto out; 400*59c8e88eSDag-Erling Smørgrav for (i = 0; i < size; i += RIJNDAEL128_BLOCK_LEN) 401*59c8e88eSDag-Erling Smørgrav rijndael_decrypt(&ctx, &c[i], &p[i]); 402*59c8e88eSDag-Erling Smørgrav rv = 0; 403*59c8e88eSDag-Erling Smørgrav break; 404*59c8e88eSDag-Erling Smørgrav default: 405*59c8e88eSDag-Erling Smørgrav DNPRINTF(SR_D_DIS, "%s: unsupported encryption algorithm %d\n", 406*59c8e88eSDag-Erling Smørgrav "softraid", alg); 407*59c8e88eSDag-Erling Smørgrav rv = -1; 408*59c8e88eSDag-Erling Smørgrav goto out; 409*59c8e88eSDag-Erling Smørgrav } 410*59c8e88eSDag-Erling Smørgrav 411*59c8e88eSDag-Erling Smørgravout: 412*59c8e88eSDag-Erling Smørgrav explicit_bzero(&ctx, sizeof(ctx)); 413*59c8e88eSDag-Erling Smørgrav return (rv); 414*59c8e88eSDag-Erling Smørgrav} 415*59c8e88eSDag-Erling Smørgrav 416*59c8e88eSDag-Erling Smørgravvoid 417*59c8e88eSDag-Erling Smørgravsr_crypto_calculate_check_hmac_sha1(u_int8_t *maskkey, int maskkey_size, 418*59c8e88eSDag-Erling Smørgrav u_int8_t *key, int key_size, u_char *check_digest) 419*59c8e88eSDag-Erling Smørgrav{ 420*59c8e88eSDag-Erling Smørgrav u_char check_key[SHA1_DIGEST_LENGTH]; 421*59c8e88eSDag-Erling Smørgrav HMAC_SHA1_CTX hmacctx; 422*59c8e88eSDag-Erling Smørgrav SHA1_CTX shactx; 423*59c8e88eSDag-Erling Smørgrav 424*59c8e88eSDag-Erling Smørgrav bzero(check_key, sizeof(check_key)); 425*59c8e88eSDag-Erling Smørgrav bzero(&hmacctx, sizeof(hmacctx)); 426*59c8e88eSDag-Erling Smørgrav bzero(&shactx, sizeof(shactx)); 427*59c8e88eSDag-Erling Smørgrav 428*59c8e88eSDag-Erling Smørgrav /* k = SHA1(mask_key) */ 429*59c8e88eSDag-Erling Smørgrav SHA1Init(&shactx); 430*59c8e88eSDag-Erling Smørgrav SHA1Update(&shactx, maskkey, maskkey_size); 431*59c8e88eSDag-Erling Smørgrav SHA1Final(check_key, &shactx); 432*59c8e88eSDag-Erling Smørgrav 433*59c8e88eSDag-Erling Smørgrav /* mac = HMAC_SHA1_k(unencrypted key) */ 434*59c8e88eSDag-Erling Smørgrav HMAC_SHA1_Init(&hmacctx, check_key, sizeof(check_key)); 435*59c8e88eSDag-Erling Smørgrav HMAC_SHA1_Update(&hmacctx, key, key_size); 436*59c8e88eSDag-Erling Smørgrav HMAC_SHA1_Final(check_digest, &hmacctx); 437*59c8e88eSDag-Erling Smørgrav 438*59c8e88eSDag-Erling Smørgrav explicit_bzero(check_key, sizeof(check_key)); 439*59c8e88eSDag-Erling Smørgrav explicit_bzero(&hmacctx, sizeof(hmacctx)); 440*59c8e88eSDag-Erling Smørgrav explicit_bzero(&shactx, sizeof(shactx)); 441*59c8e88eSDag-Erling Smørgrav} 442*59c8e88eSDag-Erling Smørgrav 443*59c8e88eSDag-Erling Smørgravint 444*59c8e88eSDag-Erling Smørgravsr_crypto_decrypt_key(struct sr_discipline *sd) 445*59c8e88eSDag-Erling Smørgrav{ 446*59c8e88eSDag-Erling Smørgrav u_char check_digest[SHA1_DIGEST_LENGTH]; 447*59c8e88eSDag-Erling Smørgrav int rv = 1; 448*59c8e88eSDag-Erling Smørgrav 449*59c8e88eSDag-Erling Smørgrav DNPRINTF(SR_D_DIS, "%s: sr_crypto_decrypt_key\n", DEVNAME(sd->sd_sc)); 450*59c8e88eSDag-Erling Smørgrav 451*59c8e88eSDag-Erling Smørgrav if (sd->mds.mdd_crypto.scr_meta->scm_check_alg != SR_CRYPTOC_HMAC_SHA1) 452*59c8e88eSDag-Erling Smørgrav goto out; 453*59c8e88eSDag-Erling Smørgrav 454*59c8e88eSDag-Erling Smørgrav if (sr_crypto_decrypt((u_char *)sd->mds.mdd_crypto.scr_meta->scm_key, 455*59c8e88eSDag-Erling Smørgrav (u_char *)sd->mds.mdd_crypto.scr_key, 456*59c8e88eSDag-Erling Smørgrav sd->mds.mdd_crypto.scr_maskkey, sizeof(sd->mds.mdd_crypto.scr_key), 457*59c8e88eSDag-Erling Smørgrav sd->mds.mdd_crypto.scr_meta->scm_mask_alg) == -1) 458*59c8e88eSDag-Erling Smørgrav goto out; 459*59c8e88eSDag-Erling Smørgrav 460*59c8e88eSDag-Erling Smørgrav#ifdef SR_DEBUG0 461*59c8e88eSDag-Erling Smørgrav sr_crypto_dumpkeys(sd); 462*59c8e88eSDag-Erling Smørgrav#endif 463*59c8e88eSDag-Erling Smørgrav 464*59c8e88eSDag-Erling Smørgrav /* Check that the key decrypted properly. */ 465*59c8e88eSDag-Erling Smørgrav sr_crypto_calculate_check_hmac_sha1(sd->mds.mdd_crypto.scr_maskkey, 466*59c8e88eSDag-Erling Smørgrav sizeof(sd->mds.mdd_crypto.scr_maskkey), 467*59c8e88eSDag-Erling Smørgrav (u_int8_t *)sd->mds.mdd_crypto.scr_key, 468*59c8e88eSDag-Erling Smørgrav sizeof(sd->mds.mdd_crypto.scr_key), 469*59c8e88eSDag-Erling Smørgrav check_digest); 470*59c8e88eSDag-Erling Smørgrav if (memcmp(sd->mds.mdd_crypto.scr_meta->chk_hmac_sha1.sch_mac, 471*59c8e88eSDag-Erling Smørgrav check_digest, sizeof(check_digest)) != 0) { 472*59c8e88eSDag-Erling Smørgrav explicit_bzero(sd->mds.mdd_crypto.scr_key, 473*59c8e88eSDag-Erling Smørgrav sizeof(sd->mds.mdd_crypto.scr_key)); 474*59c8e88eSDag-Erling Smørgrav goto out; 475*59c8e88eSDag-Erling Smørgrav } 476*59c8e88eSDag-Erling Smørgrav 477*59c8e88eSDag-Erling Smørgrav rv = 0; /* Success */ 478*59c8e88eSDag-Erling Smørgravout: 479*59c8e88eSDag-Erling Smørgrav /* we don't need the mask key anymore */ 480*59c8e88eSDag-Erling Smørgrav explicit_bzero(&sd->mds.mdd_crypto.scr_maskkey, 481*59c8e88eSDag-Erling Smørgrav sizeof(sd->mds.mdd_crypto.scr_maskkey)); 482*59c8e88eSDag-Erling Smørgrav 483*59c8e88eSDag-Erling Smørgrav explicit_bzero(check_digest, sizeof(check_digest)); 484*59c8e88eSDag-Erling Smørgrav 485*59c8e88eSDag-Erling Smørgrav return rv; 486*59c8e88eSDag-Erling Smørgrav} 487*59c8e88eSDag-Erling Smørgrav 488*59c8e88eSDag-Erling Smørgravint 489*59c8e88eSDag-Erling Smørgravsr_crypto_create_keys(struct sr_discipline *sd) 490*59c8e88eSDag-Erling Smørgrav{ 491*59c8e88eSDag-Erling Smørgrav 492*59c8e88eSDag-Erling Smørgrav DNPRINTF(SR_D_DIS, "%s: sr_crypto_create_keys\n", 493*59c8e88eSDag-Erling Smørgrav DEVNAME(sd->sd_sc)); 494*59c8e88eSDag-Erling Smørgrav 495*59c8e88eSDag-Erling Smørgrav if (AES_MAXKEYBYTES < sizeof(sd->mds.mdd_crypto.scr_maskkey)) 496*59c8e88eSDag-Erling Smørgrav return (1); 497*59c8e88eSDag-Erling Smørgrav 498*59c8e88eSDag-Erling Smørgrav /* XXX allow user to specify */ 499*59c8e88eSDag-Erling Smørgrav sd->mds.mdd_crypto.scr_meta->scm_alg = SR_CRYPTOA_AES_XTS_256; 500*59c8e88eSDag-Erling Smørgrav 501*59c8e88eSDag-Erling Smørgrav /* generate crypto keys */ 502*59c8e88eSDag-Erling Smørgrav arc4random_buf(sd->mds.mdd_crypto.scr_key, 503*59c8e88eSDag-Erling Smørgrav sizeof(sd->mds.mdd_crypto.scr_key)); 504*59c8e88eSDag-Erling Smørgrav 505*59c8e88eSDag-Erling Smørgrav /* Mask the disk keys. */ 506*59c8e88eSDag-Erling Smørgrav sd->mds.mdd_crypto.scr_meta->scm_mask_alg = SR_CRYPTOM_AES_ECB_256; 507*59c8e88eSDag-Erling Smørgrav sr_crypto_encrypt((u_char *)sd->mds.mdd_crypto.scr_key, 508*59c8e88eSDag-Erling Smørgrav (u_char *)sd->mds.mdd_crypto.scr_meta->scm_key, 509*59c8e88eSDag-Erling Smørgrav sd->mds.mdd_crypto.scr_maskkey, sizeof(sd->mds.mdd_crypto.scr_key), 510*59c8e88eSDag-Erling Smørgrav sd->mds.mdd_crypto.scr_meta->scm_mask_alg); 511*59c8e88eSDag-Erling Smørgrav 512*59c8e88eSDag-Erling Smørgrav /* Prepare key decryption check code. */ 513*59c8e88eSDag-Erling Smørgrav sd->mds.mdd_crypto.scr_meta->scm_check_alg = SR_CRYPTOC_HMAC_SHA1; 514*59c8e88eSDag-Erling Smørgrav sr_crypto_calculate_check_hmac_sha1(sd->mds.mdd_crypto.scr_maskkey, 515*59c8e88eSDag-Erling Smørgrav sizeof(sd->mds.mdd_crypto.scr_maskkey), 516*59c8e88eSDag-Erling Smørgrav (u_int8_t *)sd->mds.mdd_crypto.scr_key, 517*59c8e88eSDag-Erling Smørgrav sizeof(sd->mds.mdd_crypto.scr_key), 518*59c8e88eSDag-Erling Smørgrav sd->mds.mdd_crypto.scr_meta->chk_hmac_sha1.sch_mac); 519*59c8e88eSDag-Erling Smørgrav 520*59c8e88eSDag-Erling Smørgrav /* Erase the plaintext disk keys */ 521*59c8e88eSDag-Erling Smørgrav explicit_bzero(sd->mds.mdd_crypto.scr_key, 522*59c8e88eSDag-Erling Smørgrav sizeof(sd->mds.mdd_crypto.scr_key)); 523*59c8e88eSDag-Erling Smørgrav 524*59c8e88eSDag-Erling Smørgrav#ifdef SR_DEBUG0 525*59c8e88eSDag-Erling Smørgrav sr_crypto_dumpkeys(sd); 526*59c8e88eSDag-Erling Smørgrav#endif 527*59c8e88eSDag-Erling Smørgrav 528*59c8e88eSDag-Erling Smørgrav sd->mds.mdd_crypto.scr_meta->scm_flags = SR_CRYPTOF_KEY | 529*59c8e88eSDag-Erling Smørgrav SR_CRYPTOF_KDFHINT; 530*59c8e88eSDag-Erling Smørgrav 531*59c8e88eSDag-Erling Smørgrav return (0); 532*59c8e88eSDag-Erling Smørgrav} 533*59c8e88eSDag-Erling Smørgrav 534*59c8e88eSDag-Erling Smørgravint 535*59c8e88eSDag-Erling Smørgravsr_crypto_change_maskkey(struct sr_discipline *sd, 536*59c8e88eSDag-Erling Smørgrav struct sr_crypto_kdfinfo *kdfinfo1, struct sr_crypto_kdfinfo *kdfinfo2) 537*59c8e88eSDag-Erling Smørgrav{ 538*59c8e88eSDag-Erling Smørgrav u_char check_digest[SHA1_DIGEST_LENGTH]; 539*59c8e88eSDag-Erling Smørgrav u_char *c, *p = NULL; 540*59c8e88eSDag-Erling Smørgrav size_t ksz; 541*59c8e88eSDag-Erling Smørgrav int rv = 1; 542*59c8e88eSDag-Erling Smørgrav 543*59c8e88eSDag-Erling Smørgrav DNPRINTF(SR_D_DIS, "%s: sr_crypto_change_maskkey\n", 544*59c8e88eSDag-Erling Smørgrav DEVNAME(sd->sd_sc)); 545*59c8e88eSDag-Erling Smørgrav 546*59c8e88eSDag-Erling Smørgrav if (sd->mds.mdd_crypto.scr_meta->scm_check_alg != SR_CRYPTOC_HMAC_SHA1) 547*59c8e88eSDag-Erling Smørgrav goto out; 548*59c8e88eSDag-Erling Smørgrav 549*59c8e88eSDag-Erling Smørgrav c = (u_char *)sd->mds.mdd_crypto.scr_meta->scm_key; 550*59c8e88eSDag-Erling Smørgrav ksz = sizeof(sd->mds.mdd_crypto.scr_key); 551*59c8e88eSDag-Erling Smørgrav p = malloc(ksz, M_DEVBUF, M_WAITOK | M_CANFAIL | M_ZERO); 552*59c8e88eSDag-Erling Smørgrav if (p == NULL) 553*59c8e88eSDag-Erling Smørgrav goto out; 554*59c8e88eSDag-Erling Smørgrav 555*59c8e88eSDag-Erling Smørgrav if (sr_crypto_decrypt(c, p, kdfinfo1->maskkey, ksz, 556*59c8e88eSDag-Erling Smørgrav sd->mds.mdd_crypto.scr_meta->scm_mask_alg) == -1) 557*59c8e88eSDag-Erling Smørgrav goto out; 558*59c8e88eSDag-Erling Smørgrav 559*59c8e88eSDag-Erling Smørgrav#ifdef SR_DEBUG0 560*59c8e88eSDag-Erling Smørgrav sr_crypto_dumpkeys(sd); 561*59c8e88eSDag-Erling Smørgrav#endif 562*59c8e88eSDag-Erling Smørgrav 563*59c8e88eSDag-Erling Smørgrav sr_crypto_calculate_check_hmac_sha1(kdfinfo1->maskkey, 564*59c8e88eSDag-Erling Smørgrav sizeof(kdfinfo1->maskkey), p, ksz, check_digest); 565*59c8e88eSDag-Erling Smørgrav if (memcmp(sd->mds.mdd_crypto.scr_meta->chk_hmac_sha1.sch_mac, 566*59c8e88eSDag-Erling Smørgrav check_digest, sizeof(check_digest)) != 0) { 567*59c8e88eSDag-Erling Smørgrav sr_error(sd->sd_sc, "incorrect key or passphrase"); 568*59c8e88eSDag-Erling Smørgrav rv = EPERM; 569*59c8e88eSDag-Erling Smørgrav goto out; 570*59c8e88eSDag-Erling Smørgrav } 571*59c8e88eSDag-Erling Smørgrav 572*59c8e88eSDag-Erling Smørgrav /* Copy new KDF hint to metadata, if supplied. */ 573*59c8e88eSDag-Erling Smørgrav if (kdfinfo2->flags & SR_CRYPTOKDF_HINT) { 574*59c8e88eSDag-Erling Smørgrav if (kdfinfo2->genkdf.len > 575*59c8e88eSDag-Erling Smørgrav sizeof(sd->mds.mdd_crypto.scr_meta->scm_kdfhint)) 576*59c8e88eSDag-Erling Smørgrav goto out; 577*59c8e88eSDag-Erling Smørgrav explicit_bzero(sd->mds.mdd_crypto.scr_meta->scm_kdfhint, 578*59c8e88eSDag-Erling Smørgrav sizeof(sd->mds.mdd_crypto.scr_meta->scm_kdfhint)); 579*59c8e88eSDag-Erling Smørgrav memcpy(sd->mds.mdd_crypto.scr_meta->scm_kdfhint, 580*59c8e88eSDag-Erling Smørgrav &kdfinfo2->genkdf, kdfinfo2->genkdf.len); 581*59c8e88eSDag-Erling Smørgrav } 582*59c8e88eSDag-Erling Smørgrav 583*59c8e88eSDag-Erling Smørgrav /* Mask the disk keys. */ 584*59c8e88eSDag-Erling Smørgrav c = (u_char *)sd->mds.mdd_crypto.scr_meta->scm_key; 585*59c8e88eSDag-Erling Smørgrav if (sr_crypto_encrypt(p, c, kdfinfo2->maskkey, ksz, 586*59c8e88eSDag-Erling Smørgrav sd->mds.mdd_crypto.scr_meta->scm_mask_alg) == -1) 587*59c8e88eSDag-Erling Smørgrav goto out; 588*59c8e88eSDag-Erling Smørgrav 589*59c8e88eSDag-Erling Smørgrav /* Prepare key decryption check code. */ 590*59c8e88eSDag-Erling Smørgrav sd->mds.mdd_crypto.scr_meta->scm_check_alg = SR_CRYPTOC_HMAC_SHA1; 591*59c8e88eSDag-Erling Smørgrav sr_crypto_calculate_check_hmac_sha1(kdfinfo2->maskkey, 592*59c8e88eSDag-Erling Smørgrav sizeof(kdfinfo2->maskkey), (u_int8_t *)sd->mds.mdd_crypto.scr_key, 593*59c8e88eSDag-Erling Smørgrav sizeof(sd->mds.mdd_crypto.scr_key), check_digest); 594*59c8e88eSDag-Erling Smørgrav 595*59c8e88eSDag-Erling Smørgrav /* Copy new encrypted key and HMAC to metadata. */ 596*59c8e88eSDag-Erling Smørgrav memcpy(sd->mds.mdd_crypto.scr_meta->chk_hmac_sha1.sch_mac, check_digest, 597*59c8e88eSDag-Erling Smørgrav sizeof(sd->mds.mdd_crypto.scr_meta->chk_hmac_sha1.sch_mac)); 598*59c8e88eSDag-Erling Smørgrav 599*59c8e88eSDag-Erling Smørgrav rv = 0; /* Success */ 600*59c8e88eSDag-Erling Smørgrav 601*59c8e88eSDag-Erling Smørgravout: 602*59c8e88eSDag-Erling Smørgrav if (p) { 603*59c8e88eSDag-Erling Smørgrav explicit_bzero(p, ksz); 604*59c8e88eSDag-Erling Smørgrav free(p, M_DEVBUF, ksz); 605*59c8e88eSDag-Erling Smørgrav } 606*59c8e88eSDag-Erling Smørgrav 607*59c8e88eSDag-Erling Smørgrav explicit_bzero(check_digest, sizeof(check_digest)); 608*59c8e88eSDag-Erling Smørgrav explicit_bzero(&kdfinfo1->maskkey, sizeof(kdfinfo1->maskkey)); 609*59c8e88eSDag-Erling Smørgrav explicit_bzero(&kdfinfo2->maskkey, sizeof(kdfinfo2->maskkey)); 610*59c8e88eSDag-Erling Smørgrav 611*59c8e88eSDag-Erling Smørgrav return (rv); 612*59c8e88eSDag-Erling Smørgrav} 613*59c8e88eSDag-Erling Smørgrav 614*59c8e88eSDag-Erling Smørgravstruct sr_chunk * 615*59c8e88eSDag-Erling Smørgravsr_crypto_create_key_disk(struct sr_discipline *sd, dev_t dev) 616*59c8e88eSDag-Erling Smørgrav{ 617*59c8e88eSDag-Erling Smørgrav struct sr_softc *sc = sd->sd_sc; 618*59c8e88eSDag-Erling Smørgrav struct sr_discipline *fakesd = NULL; 619*59c8e88eSDag-Erling Smørgrav struct sr_metadata *sm = NULL; 620*59c8e88eSDag-Erling Smørgrav struct sr_meta_chunk *km; 621*59c8e88eSDag-Erling Smørgrav struct sr_meta_opt_item *omi = NULL; 622*59c8e88eSDag-Erling Smørgrav struct sr_meta_keydisk *skm; 623*59c8e88eSDag-Erling Smørgrav struct sr_chunk *key_disk = NULL; 624*59c8e88eSDag-Erling Smørgrav struct disklabel label; 625*59c8e88eSDag-Erling Smørgrav struct vnode *vn; 626*59c8e88eSDag-Erling Smørgrav char devname[32]; 627*59c8e88eSDag-Erling Smørgrav int c, part, open = 0; 628*59c8e88eSDag-Erling Smørgrav 629*59c8e88eSDag-Erling Smørgrav /* 630*59c8e88eSDag-Erling Smørgrav * Create a metadata structure on the key disk and store 631*59c8e88eSDag-Erling Smørgrav * keying material in the optional metadata. 632*59c8e88eSDag-Erling Smørgrav */ 633*59c8e88eSDag-Erling Smørgrav 634*59c8e88eSDag-Erling Smørgrav sr_meta_getdevname(sc, dev, devname, sizeof(devname)); 635*59c8e88eSDag-Erling Smørgrav 636*59c8e88eSDag-Erling Smørgrav /* Make sure chunk is not already in use. */ 637*59c8e88eSDag-Erling Smørgrav c = sr_chunk_in_use(sc, dev); 638*59c8e88eSDag-Erling Smørgrav if (c != BIOC_SDINVALID && c != BIOC_SDOFFLINE) { 639*59c8e88eSDag-Erling Smørgrav sr_error(sc, "%s is already in use", devname); 640*59c8e88eSDag-Erling Smørgrav goto done; 641*59c8e88eSDag-Erling Smørgrav } 642*59c8e88eSDag-Erling Smørgrav 643*59c8e88eSDag-Erling Smørgrav /* Open device. */ 644*59c8e88eSDag-Erling Smørgrav if (bdevvp(dev, &vn)) { 645*59c8e88eSDag-Erling Smørgrav sr_error(sc, "cannot open key disk %s", devname); 646*59c8e88eSDag-Erling Smørgrav goto done; 647*59c8e88eSDag-Erling Smørgrav } 648*59c8e88eSDag-Erling Smørgrav if (VOP_OPEN(vn, FREAD | FWRITE, NOCRED, curproc)) { 649*59c8e88eSDag-Erling Smørgrav DNPRINTF(SR_D_META,"%s: sr_crypto_create_key_disk cannot " 650*59c8e88eSDag-Erling Smørgrav "open %s\n", DEVNAME(sc), devname); 651*59c8e88eSDag-Erling Smørgrav vput(vn); 652*59c8e88eSDag-Erling Smørgrav goto done; 653*59c8e88eSDag-Erling Smørgrav } 654*59c8e88eSDag-Erling Smørgrav open = 1; /* close dev on error */ 655*59c8e88eSDag-Erling Smørgrav 656*59c8e88eSDag-Erling Smørgrav /* Get partition details. */ 657*59c8e88eSDag-Erling Smørgrav part = DISKPART(dev); 658*59c8e88eSDag-Erling Smørgrav if (VOP_IOCTL(vn, DIOCGDINFO, (caddr_t)&label, 659*59c8e88eSDag-Erling Smørgrav FREAD, NOCRED, curproc)) { 660*59c8e88eSDag-Erling Smørgrav DNPRINTF(SR_D_META, "%s: sr_crypto_create_key_disk ioctl " 661*59c8e88eSDag-Erling Smørgrav "failed\n", DEVNAME(sc)); 662*59c8e88eSDag-Erling Smørgrav goto done; 663*59c8e88eSDag-Erling Smørgrav } 664*59c8e88eSDag-Erling Smørgrav if (label.d_partitions[part].p_fstype != FS_RAID) { 665*59c8e88eSDag-Erling Smørgrav sr_error(sc, "%s partition not of type RAID (%d)", 666*59c8e88eSDag-Erling Smørgrav devname, label.d_partitions[part].p_fstype); 667*59c8e88eSDag-Erling Smørgrav goto done; 668*59c8e88eSDag-Erling Smørgrav } 669*59c8e88eSDag-Erling Smørgrav 670*59c8e88eSDag-Erling Smørgrav /* 671*59c8e88eSDag-Erling Smørgrav * Create and populate chunk metadata. 672*59c8e88eSDag-Erling Smørgrav */ 673*59c8e88eSDag-Erling Smørgrav 674*59c8e88eSDag-Erling Smørgrav key_disk = malloc(sizeof(struct sr_chunk), M_DEVBUF, M_WAITOK | M_ZERO); 675*59c8e88eSDag-Erling Smørgrav km = &key_disk->src_meta; 676*59c8e88eSDag-Erling Smørgrav 677*59c8e88eSDag-Erling Smørgrav key_disk->src_dev_mm = dev; 678*59c8e88eSDag-Erling Smørgrav key_disk->src_vn = vn; 679*59c8e88eSDag-Erling Smørgrav strlcpy(key_disk->src_devname, devname, sizeof(km->scmi.scm_devname)); 680*59c8e88eSDag-Erling Smørgrav key_disk->src_size = 0; 681*59c8e88eSDag-Erling Smørgrav 682*59c8e88eSDag-Erling Smørgrav km->scmi.scm_volid = sd->sd_meta->ssdi.ssd_level; 683*59c8e88eSDag-Erling Smørgrav km->scmi.scm_chunk_id = 0; 684*59c8e88eSDag-Erling Smørgrav km->scmi.scm_size = 0; 685*59c8e88eSDag-Erling Smørgrav km->scmi.scm_coerced_size = 0; 686*59c8e88eSDag-Erling Smørgrav strlcpy(km->scmi.scm_devname, devname, sizeof(km->scmi.scm_devname)); 687*59c8e88eSDag-Erling Smørgrav memcpy(&km->scmi.scm_uuid, &sd->sd_meta->ssdi.ssd_uuid, 688*59c8e88eSDag-Erling Smørgrav sizeof(struct sr_uuid)); 689*59c8e88eSDag-Erling Smørgrav 690*59c8e88eSDag-Erling Smørgrav sr_checksum(sc, km, &km->scm_checksum, 691*59c8e88eSDag-Erling Smørgrav sizeof(struct sr_meta_chunk_invariant)); 692*59c8e88eSDag-Erling Smørgrav 693*59c8e88eSDag-Erling Smørgrav km->scm_status = BIOC_SDONLINE; 694*59c8e88eSDag-Erling Smørgrav 695*59c8e88eSDag-Erling Smørgrav /* 696*59c8e88eSDag-Erling Smørgrav * Create and populate our own discipline and metadata. 697*59c8e88eSDag-Erling Smørgrav */ 698*59c8e88eSDag-Erling Smørgrav 699*59c8e88eSDag-Erling Smørgrav sm = malloc(sizeof(struct sr_metadata), M_DEVBUF, M_WAITOK | M_ZERO); 700*59c8e88eSDag-Erling Smørgrav sm->ssdi.ssd_magic = SR_MAGIC; 701*59c8e88eSDag-Erling Smørgrav sm->ssdi.ssd_version = SR_META_VERSION; 702*59c8e88eSDag-Erling Smørgrav sm->ssd_ondisk = 0; 703*59c8e88eSDag-Erling Smørgrav sm->ssdi.ssd_vol_flags = 0; 704*59c8e88eSDag-Erling Smørgrav memcpy(&sm->ssdi.ssd_uuid, &sd->sd_meta->ssdi.ssd_uuid, 705*59c8e88eSDag-Erling Smørgrav sizeof(struct sr_uuid)); 706*59c8e88eSDag-Erling Smørgrav sm->ssdi.ssd_chunk_no = 1; 707*59c8e88eSDag-Erling Smørgrav sm->ssdi.ssd_volid = SR_KEYDISK_VOLID; 708*59c8e88eSDag-Erling Smørgrav sm->ssdi.ssd_level = SR_KEYDISK_LEVEL; 709*59c8e88eSDag-Erling Smørgrav sm->ssdi.ssd_size = 0; 710*59c8e88eSDag-Erling Smørgrav strlcpy(sm->ssdi.ssd_vendor, "OPENBSD", sizeof(sm->ssdi.ssd_vendor)); 711*59c8e88eSDag-Erling Smørgrav snprintf(sm->ssdi.ssd_product, sizeof(sm->ssdi.ssd_product), 712*59c8e88eSDag-Erling Smørgrav "SR %s", "KEYDISK"); 713*59c8e88eSDag-Erling Smørgrav snprintf(sm->ssdi.ssd_revision, sizeof(sm->ssdi.ssd_revision), 714*59c8e88eSDag-Erling Smørgrav "%03d", SR_META_VERSION); 715*59c8e88eSDag-Erling Smørgrav 716*59c8e88eSDag-Erling Smørgrav fakesd = malloc(sizeof(struct sr_discipline), M_DEVBUF, 717*59c8e88eSDag-Erling Smørgrav M_WAITOK | M_ZERO); 718*59c8e88eSDag-Erling Smørgrav fakesd->sd_sc = sd->sd_sc; 719*59c8e88eSDag-Erling Smørgrav fakesd->sd_meta = sm; 720*59c8e88eSDag-Erling Smørgrav fakesd->sd_meta_type = SR_META_F_NATIVE; 721*59c8e88eSDag-Erling Smørgrav fakesd->sd_vol_status = BIOC_SVONLINE; 722*59c8e88eSDag-Erling Smørgrav strlcpy(fakesd->sd_name, "KEYDISK", sizeof(fakesd->sd_name)); 723*59c8e88eSDag-Erling Smørgrav SLIST_INIT(&fakesd->sd_meta_opt); 724*59c8e88eSDag-Erling Smørgrav 725*59c8e88eSDag-Erling Smørgrav /* Add chunk to volume. */ 726*59c8e88eSDag-Erling Smørgrav fakesd->sd_vol.sv_chunks = malloc(sizeof(struct sr_chunk *), M_DEVBUF, 727*59c8e88eSDag-Erling Smørgrav M_WAITOK | M_ZERO); 728*59c8e88eSDag-Erling Smørgrav fakesd->sd_vol.sv_chunks[0] = key_disk; 729*59c8e88eSDag-Erling Smørgrav SLIST_INIT(&fakesd->sd_vol.sv_chunk_list); 730*59c8e88eSDag-Erling Smørgrav SLIST_INSERT_HEAD(&fakesd->sd_vol.sv_chunk_list, key_disk, src_link); 731*59c8e88eSDag-Erling Smørgrav 732*59c8e88eSDag-Erling Smørgrav /* Generate mask key. */ 733*59c8e88eSDag-Erling Smørgrav arc4random_buf(sd->mds.mdd_crypto.scr_maskkey, 734*59c8e88eSDag-Erling Smørgrav sizeof(sd->mds.mdd_crypto.scr_maskkey)); 735*59c8e88eSDag-Erling Smørgrav 736*59c8e88eSDag-Erling Smørgrav /* Copy mask key to optional metadata area. */ 737*59c8e88eSDag-Erling Smørgrav omi = malloc(sizeof(struct sr_meta_opt_item), M_DEVBUF, 738*59c8e88eSDag-Erling Smørgrav M_WAITOK | M_ZERO); 739*59c8e88eSDag-Erling Smørgrav omi->omi_som = malloc(sizeof(struct sr_meta_keydisk), M_DEVBUF, 740*59c8e88eSDag-Erling Smørgrav M_WAITOK | M_ZERO); 741*59c8e88eSDag-Erling Smørgrav omi->omi_som->som_type = SR_OPT_KEYDISK; 742*59c8e88eSDag-Erling Smørgrav omi->omi_som->som_length = sizeof(struct sr_meta_keydisk); 743*59c8e88eSDag-Erling Smørgrav skm = (struct sr_meta_keydisk *)omi->omi_som; 744*59c8e88eSDag-Erling Smørgrav memcpy(&skm->skm_maskkey, sd->mds.mdd_crypto.scr_maskkey, 745*59c8e88eSDag-Erling Smørgrav sizeof(skm->skm_maskkey)); 746*59c8e88eSDag-Erling Smørgrav SLIST_INSERT_HEAD(&fakesd->sd_meta_opt, omi, omi_link); 747*59c8e88eSDag-Erling Smørgrav fakesd->sd_meta->ssdi.ssd_opt_no++; 748*59c8e88eSDag-Erling Smørgrav 749*59c8e88eSDag-Erling Smørgrav /* Save metadata. */ 750*59c8e88eSDag-Erling Smørgrav if (sr_meta_save(fakesd, SR_META_DIRTY)) { 751*59c8e88eSDag-Erling Smørgrav sr_error(sc, "could not save metadata to %s", devname); 752*59c8e88eSDag-Erling Smørgrav goto fail; 753*59c8e88eSDag-Erling Smørgrav } 754*59c8e88eSDag-Erling Smørgrav 755*59c8e88eSDag-Erling Smørgrav goto done; 756*59c8e88eSDag-Erling Smørgrav 757*59c8e88eSDag-Erling Smørgravfail: 758*59c8e88eSDag-Erling Smørgrav free(key_disk, M_DEVBUF, sizeof(struct sr_chunk)); 759*59c8e88eSDag-Erling Smørgrav key_disk = NULL; 760*59c8e88eSDag-Erling Smørgrav 761*59c8e88eSDag-Erling Smørgravdone: 762*59c8e88eSDag-Erling Smørgrav free(omi, M_DEVBUF, sizeof(struct sr_meta_opt_item)); 763*59c8e88eSDag-Erling Smørgrav if (fakesd && fakesd->sd_vol.sv_chunks) 764*59c8e88eSDag-Erling Smørgrav free(fakesd->sd_vol.sv_chunks, M_DEVBUF, 765*59c8e88eSDag-Erling Smørgrav sizeof(struct sr_chunk *)); 766*59c8e88eSDag-Erling Smørgrav free(fakesd, M_DEVBUF, sizeof(struct sr_discipline)); 767*59c8e88eSDag-Erling Smørgrav free(sm, M_DEVBUF, sizeof(struct sr_metadata)); 768*59c8e88eSDag-Erling Smørgrav if (open) { 769*59c8e88eSDag-Erling Smørgrav VOP_CLOSE(vn, FREAD | FWRITE, NOCRED, curproc); 770*59c8e88eSDag-Erling Smørgrav vput(vn); 771*59c8e88eSDag-Erling Smørgrav } 772*59c8e88eSDag-Erling Smørgrav 773*59c8e88eSDag-Erling Smørgrav return key_disk; 774*59c8e88eSDag-Erling Smørgrav} 775*59c8e88eSDag-Erling Smørgrav 776*59c8e88eSDag-Erling Smørgravstruct sr_chunk * 777*59c8e88eSDag-Erling Smørgravsr_crypto_read_key_disk(struct sr_discipline *sd, dev_t dev) 778*59c8e88eSDag-Erling Smørgrav{ 779*59c8e88eSDag-Erling Smørgrav struct sr_softc *sc = sd->sd_sc; 780*59c8e88eSDag-Erling Smørgrav struct sr_metadata *sm = NULL; 781*59c8e88eSDag-Erling Smørgrav struct sr_meta_opt_item *omi, *omi_next; 782*59c8e88eSDag-Erling Smørgrav struct sr_meta_opt_hdr *omh; 783*59c8e88eSDag-Erling Smørgrav struct sr_meta_keydisk *skm; 784*59c8e88eSDag-Erling Smørgrav struct sr_meta_opt_head som; 785*59c8e88eSDag-Erling Smørgrav struct sr_chunk *key_disk = NULL; 786*59c8e88eSDag-Erling Smørgrav struct disklabel label; 787*59c8e88eSDag-Erling Smørgrav struct vnode *vn = NULL; 788*59c8e88eSDag-Erling Smørgrav char devname[32]; 789*59c8e88eSDag-Erling Smørgrav int c, part, open = 0; 790*59c8e88eSDag-Erling Smørgrav 791*59c8e88eSDag-Erling Smørgrav /* 792*59c8e88eSDag-Erling Smørgrav * Load a key disk and load keying material into memory. 793*59c8e88eSDag-Erling Smørgrav */ 794*59c8e88eSDag-Erling Smørgrav 795*59c8e88eSDag-Erling Smørgrav SLIST_INIT(&som); 796*59c8e88eSDag-Erling Smørgrav 797*59c8e88eSDag-Erling Smørgrav sr_meta_getdevname(sc, dev, devname, sizeof(devname)); 798*59c8e88eSDag-Erling Smørgrav 799*59c8e88eSDag-Erling Smørgrav /* Make sure chunk is not already in use. */ 800*59c8e88eSDag-Erling Smørgrav c = sr_chunk_in_use(sc, dev); 801*59c8e88eSDag-Erling Smørgrav if (c != BIOC_SDINVALID && c != BIOC_SDOFFLINE) { 802*59c8e88eSDag-Erling Smørgrav sr_error(sc, "%s is already in use", devname); 803*59c8e88eSDag-Erling Smørgrav goto done; 804*59c8e88eSDag-Erling Smørgrav } 805*59c8e88eSDag-Erling Smørgrav 806*59c8e88eSDag-Erling Smørgrav /* Open device. */ 807*59c8e88eSDag-Erling Smørgrav if (bdevvp(dev, &vn)) { 808*59c8e88eSDag-Erling Smørgrav sr_error(sc, "cannot open key disk %s", devname); 809*59c8e88eSDag-Erling Smørgrav goto done; 810*59c8e88eSDag-Erling Smørgrav } 811*59c8e88eSDag-Erling Smørgrav if (VOP_OPEN(vn, FREAD, NOCRED, curproc)) { 812*59c8e88eSDag-Erling Smørgrav DNPRINTF(SR_D_META,"%s: sr_crypto_read_key_disk cannot " 813*59c8e88eSDag-Erling Smørgrav "open %s\n", DEVNAME(sc), devname); 814*59c8e88eSDag-Erling Smørgrav vput(vn); 815*59c8e88eSDag-Erling Smørgrav goto done; 816*59c8e88eSDag-Erling Smørgrav } 817*59c8e88eSDag-Erling Smørgrav open = 1; /* close dev on error */ 818*59c8e88eSDag-Erling Smørgrav 819*59c8e88eSDag-Erling Smørgrav /* Get partition details. */ 820*59c8e88eSDag-Erling Smørgrav part = DISKPART(dev); 821*59c8e88eSDag-Erling Smørgrav if (VOP_IOCTL(vn, DIOCGDINFO, (caddr_t)&label, FREAD, 822*59c8e88eSDag-Erling Smørgrav NOCRED, curproc)) { 823*59c8e88eSDag-Erling Smørgrav DNPRINTF(SR_D_META, "%s: sr_crypto_read_key_disk ioctl " 824*59c8e88eSDag-Erling Smørgrav "failed\n", DEVNAME(sc)); 825*59c8e88eSDag-Erling Smørgrav goto done; 826*59c8e88eSDag-Erling Smørgrav } 827*59c8e88eSDag-Erling Smørgrav if (label.d_partitions[part].p_fstype != FS_RAID) { 828*59c8e88eSDag-Erling Smørgrav sr_error(sc, "%s partition not of type RAID (%d)", 829*59c8e88eSDag-Erling Smørgrav devname, label.d_partitions[part].p_fstype); 830*59c8e88eSDag-Erling Smørgrav goto done; 831*59c8e88eSDag-Erling Smørgrav } 832*59c8e88eSDag-Erling Smørgrav 833*59c8e88eSDag-Erling Smørgrav /* 834*59c8e88eSDag-Erling Smørgrav * Read and validate key disk metadata. 835*59c8e88eSDag-Erling Smørgrav */ 836*59c8e88eSDag-Erling Smørgrav sm = malloc(SR_META_SIZE * DEV_BSIZE, M_DEVBUF, M_WAITOK | M_ZERO); 837*59c8e88eSDag-Erling Smørgrav if (sr_meta_native_read(sd, dev, sm, NULL)) { 838*59c8e88eSDag-Erling Smørgrav sr_error(sc, "native bootprobe could not read native metadata"); 839*59c8e88eSDag-Erling Smørgrav goto done; 840*59c8e88eSDag-Erling Smørgrav } 841*59c8e88eSDag-Erling Smørgrav 842*59c8e88eSDag-Erling Smørgrav if (sr_meta_validate(sd, dev, sm, NULL)) { 843*59c8e88eSDag-Erling Smørgrav DNPRINTF(SR_D_META, "%s: invalid metadata\n", 844*59c8e88eSDag-Erling Smørgrav DEVNAME(sc)); 845*59c8e88eSDag-Erling Smørgrav goto done; 846*59c8e88eSDag-Erling Smørgrav } 847*59c8e88eSDag-Erling Smørgrav 848*59c8e88eSDag-Erling Smørgrav /* Make sure this is a key disk. */ 849*59c8e88eSDag-Erling Smørgrav if (sm->ssdi.ssd_level != SR_KEYDISK_LEVEL) { 850*59c8e88eSDag-Erling Smørgrav sr_error(sc, "%s is not a key disk", devname); 851*59c8e88eSDag-Erling Smørgrav goto done; 852*59c8e88eSDag-Erling Smørgrav } 853*59c8e88eSDag-Erling Smørgrav 854*59c8e88eSDag-Erling Smørgrav /* Construct key disk chunk. */ 855*59c8e88eSDag-Erling Smørgrav key_disk = malloc(sizeof(struct sr_chunk), M_DEVBUF, M_WAITOK | M_ZERO); 856*59c8e88eSDag-Erling Smørgrav key_disk->src_dev_mm = dev; 857*59c8e88eSDag-Erling Smørgrav key_disk->src_vn = vn; 858*59c8e88eSDag-Erling Smørgrav key_disk->src_size = 0; 859*59c8e88eSDag-Erling Smørgrav 860*59c8e88eSDag-Erling Smørgrav memcpy(&key_disk->src_meta, (struct sr_meta_chunk *)(sm + 1), 861*59c8e88eSDag-Erling Smørgrav sizeof(key_disk->src_meta)); 862*59c8e88eSDag-Erling Smørgrav 863*59c8e88eSDag-Erling Smørgrav /* Read mask key from optional metadata. */ 864*59c8e88eSDag-Erling Smørgrav sr_meta_opt_load(sc, sm, &som); 865*59c8e88eSDag-Erling Smørgrav SLIST_FOREACH(omi, &som, omi_link) { 866*59c8e88eSDag-Erling Smørgrav omh = omi->omi_som; 867*59c8e88eSDag-Erling Smørgrav if (omh->som_type == SR_OPT_KEYDISK) { 868*59c8e88eSDag-Erling Smørgrav skm = (struct sr_meta_keydisk *)omh; 869*59c8e88eSDag-Erling Smørgrav memcpy(sd->mds.mdd_crypto.scr_maskkey, &skm->skm_maskkey, 870*59c8e88eSDag-Erling Smørgrav sizeof(sd->mds.mdd_crypto.scr_maskkey)); 871*59c8e88eSDag-Erling Smørgrav } else if (omh->som_type == SR_OPT_CRYPTO) { 872*59c8e88eSDag-Erling Smørgrav /* Original keydisk format with key in crypto area. */ 873*59c8e88eSDag-Erling Smørgrav memcpy(sd->mds.mdd_crypto.scr_maskkey, 874*59c8e88eSDag-Erling Smørgrav omh + sizeof(struct sr_meta_opt_hdr), 875*59c8e88eSDag-Erling Smørgrav sizeof(sd->mds.mdd_crypto.scr_maskkey)); 876*59c8e88eSDag-Erling Smørgrav } 877*59c8e88eSDag-Erling Smørgrav } 878*59c8e88eSDag-Erling Smørgrav 879*59c8e88eSDag-Erling Smørgrav open = 0; 880*59c8e88eSDag-Erling Smørgrav 881*59c8e88eSDag-Erling Smørgravdone: 882*59c8e88eSDag-Erling Smørgrav for (omi = SLIST_FIRST(&som); omi != NULL; omi = omi_next) { 883*59c8e88eSDag-Erling Smørgrav omi_next = SLIST_NEXT(omi, omi_link); 884*59c8e88eSDag-Erling Smørgrav free(omi->omi_som, M_DEVBUF, 0); 885*59c8e88eSDag-Erling Smørgrav free(omi, M_DEVBUF, sizeof(struct sr_meta_opt_item)); 886*59c8e88eSDag-Erling Smørgrav } 887*59c8e88eSDag-Erling Smørgrav 888*59c8e88eSDag-Erling Smørgrav free(sm, M_DEVBUF, SR_META_SIZE * DEV_BSIZE); 889*59c8e88eSDag-Erling Smørgrav 890*59c8e88eSDag-Erling Smørgrav if (vn && open) { 891*59c8e88eSDag-Erling Smørgrav VOP_CLOSE(vn, FREAD, NOCRED, curproc); 892*59c8e88eSDag-Erling Smørgrav vput(vn); 893*59c8e88eSDag-Erling Smørgrav } 894*59c8e88eSDag-Erling Smørgrav 895*59c8e88eSDag-Erling Smørgrav return key_disk; 896*59c8e88eSDag-Erling Smørgrav} 897*59c8e88eSDag-Erling Smørgrav 898*59c8e88eSDag-Erling Smørgravstatic void 899*59c8e88eSDag-Erling Smørgravsr_crypto_free_sessions(struct sr_discipline *sd) 900*59c8e88eSDag-Erling Smørgrav{ 901*59c8e88eSDag-Erling Smørgrav u_int i; 902*59c8e88eSDag-Erling Smørgrav 903*59c8e88eSDag-Erling Smørgrav for (i = 0; i < SR_CRYPTO_MAXKEYS; i++) { 904*59c8e88eSDag-Erling Smørgrav if (sd->mds.mdd_crypto.scr_sid[i] != (u_int64_t)-1) { 905*59c8e88eSDag-Erling Smørgrav crypto_freesession(sd->mds.mdd_crypto.scr_sid[i]); 906*59c8e88eSDag-Erling Smørgrav sd->mds.mdd_crypto.scr_sid[i] = (u_int64_t)-1; 907*59c8e88eSDag-Erling Smørgrav } 908*59c8e88eSDag-Erling Smørgrav } 909*59c8e88eSDag-Erling Smørgrav} 910*59c8e88eSDag-Erling Smørgrav 911*59c8e88eSDag-Erling Smørgravint 912*59c8e88eSDag-Erling Smørgravsr_crypto_alloc_resources(struct sr_discipline *sd) 913*59c8e88eSDag-Erling Smørgrav{ 914*59c8e88eSDag-Erling Smørgrav struct sr_workunit *wu; 915*59c8e88eSDag-Erling Smørgrav struct sr_crypto_wu *crwu; 916*59c8e88eSDag-Erling Smørgrav struct cryptoini cri; 917*59c8e88eSDag-Erling Smørgrav u_int num_keys, i; 918*59c8e88eSDag-Erling Smørgrav 919*59c8e88eSDag-Erling Smørgrav DNPRINTF(SR_D_DIS, "%s: sr_crypto_alloc_resources\n", 920*59c8e88eSDag-Erling Smørgrav DEVNAME(sd->sd_sc)); 921*59c8e88eSDag-Erling Smørgrav 922*59c8e88eSDag-Erling Smørgrav sd->mds.mdd_crypto.scr_alg = CRYPTO_AES_XTS; 923*59c8e88eSDag-Erling Smørgrav switch (sd->mds.mdd_crypto.scr_meta->scm_alg) { 924*59c8e88eSDag-Erling Smørgrav case SR_CRYPTOA_AES_XTS_128: 925*59c8e88eSDag-Erling Smørgrav sd->mds.mdd_crypto.scr_klen = 256; 926*59c8e88eSDag-Erling Smørgrav break; 927*59c8e88eSDag-Erling Smørgrav case SR_CRYPTOA_AES_XTS_256: 928*59c8e88eSDag-Erling Smørgrav sd->mds.mdd_crypto.scr_klen = 512; 929*59c8e88eSDag-Erling Smørgrav break; 930*59c8e88eSDag-Erling Smørgrav default: 931*59c8e88eSDag-Erling Smørgrav sr_error(sd->sd_sc, "unknown crypto algorithm"); 932*59c8e88eSDag-Erling Smørgrav return (EINVAL); 933*59c8e88eSDag-Erling Smørgrav } 934*59c8e88eSDag-Erling Smørgrav 935*59c8e88eSDag-Erling Smørgrav for (i = 0; i < SR_CRYPTO_MAXKEYS; i++) 936*59c8e88eSDag-Erling Smørgrav sd->mds.mdd_crypto.scr_sid[i] = (u_int64_t)-1; 937*59c8e88eSDag-Erling Smørgrav 938*59c8e88eSDag-Erling Smørgrav if (sr_wu_alloc(sd)) { 939*59c8e88eSDag-Erling Smørgrav sr_error(sd->sd_sc, "unable to allocate work units"); 940*59c8e88eSDag-Erling Smørgrav return (ENOMEM); 941*59c8e88eSDag-Erling Smørgrav } 942*59c8e88eSDag-Erling Smørgrav if (sr_ccb_alloc(sd)) { 943*59c8e88eSDag-Erling Smørgrav sr_error(sd->sd_sc, "unable to allocate CCBs"); 944*59c8e88eSDag-Erling Smørgrav return (ENOMEM); 945*59c8e88eSDag-Erling Smørgrav } 946*59c8e88eSDag-Erling Smørgrav if (sr_crypto_decrypt_key(sd)) { 947*59c8e88eSDag-Erling Smørgrav sr_error(sd->sd_sc, "incorrect key or passphrase"); 948*59c8e88eSDag-Erling Smørgrav return (EPERM); 949*59c8e88eSDag-Erling Smørgrav } 950*59c8e88eSDag-Erling Smørgrav 951*59c8e88eSDag-Erling Smørgrav /* 952*59c8e88eSDag-Erling Smørgrav * For each work unit allocate the uio, iovec and crypto structures. 953*59c8e88eSDag-Erling Smørgrav * These have to be allocated now because during runtime we cannot 954*59c8e88eSDag-Erling Smørgrav * fail an allocation without failing the I/O (which can cause real 955*59c8e88eSDag-Erling Smørgrav * problems). 956*59c8e88eSDag-Erling Smørgrav */ 957*59c8e88eSDag-Erling Smørgrav TAILQ_FOREACH(wu, &sd->sd_wu, swu_next) { 958*59c8e88eSDag-Erling Smørgrav crwu = (struct sr_crypto_wu *)wu; 959*59c8e88eSDag-Erling Smørgrav crwu->cr_uio.uio_iov = &crwu->cr_iov; 960*59c8e88eSDag-Erling Smørgrav crwu->cr_dmabuf = dma_alloc(MAXPHYS, PR_WAITOK); 961*59c8e88eSDag-Erling Smørgrav crwu->cr_crp = crypto_getreq(MAXPHYS >> DEV_BSHIFT); 962*59c8e88eSDag-Erling Smørgrav if (crwu->cr_crp == NULL) 963*59c8e88eSDag-Erling Smørgrav return (ENOMEM); 964*59c8e88eSDag-Erling Smørgrav } 965*59c8e88eSDag-Erling Smørgrav 966*59c8e88eSDag-Erling Smørgrav memset(&cri, 0, sizeof(cri)); 967*59c8e88eSDag-Erling Smørgrav cri.cri_alg = sd->mds.mdd_crypto.scr_alg; 968*59c8e88eSDag-Erling Smørgrav cri.cri_klen = sd->mds.mdd_crypto.scr_klen; 969*59c8e88eSDag-Erling Smørgrav 970*59c8e88eSDag-Erling Smørgrav /* Allocate a session for every 2^SR_CRYPTO_KEY_BLKSHIFT blocks. */ 971*59c8e88eSDag-Erling Smørgrav num_keys = ((sd->sd_meta->ssdi.ssd_size - 1) >> 972*59c8e88eSDag-Erling Smørgrav SR_CRYPTO_KEY_BLKSHIFT) + 1; 973*59c8e88eSDag-Erling Smørgrav if (num_keys > SR_CRYPTO_MAXKEYS) 974*59c8e88eSDag-Erling Smørgrav return (EFBIG); 975*59c8e88eSDag-Erling Smørgrav for (i = 0; i < num_keys; i++) { 976*59c8e88eSDag-Erling Smørgrav cri.cri_key = sd->mds.mdd_crypto.scr_key[i]; 977*59c8e88eSDag-Erling Smørgrav if (crypto_newsession(&sd->mds.mdd_crypto.scr_sid[i], 978*59c8e88eSDag-Erling Smørgrav &cri, 0) != 0) { 979*59c8e88eSDag-Erling Smørgrav sr_crypto_free_sessions(sd); 980*59c8e88eSDag-Erling Smørgrav return (EINVAL); 981*59c8e88eSDag-Erling Smørgrav } 982*59c8e88eSDag-Erling Smørgrav } 983*59c8e88eSDag-Erling Smørgrav 984*59c8e88eSDag-Erling Smørgrav sr_hotplug_register(sd, sr_crypto_hotplug); 985*59c8e88eSDag-Erling Smørgrav 986*59c8e88eSDag-Erling Smørgrav return (0); 987*59c8e88eSDag-Erling Smørgrav} 988*59c8e88eSDag-Erling Smørgrav 989*59c8e88eSDag-Erling Smørgravvoid 990*59c8e88eSDag-Erling Smørgravsr_crypto_free_resources(struct sr_discipline *sd) 991*59c8e88eSDag-Erling Smørgrav{ 992*59c8e88eSDag-Erling Smørgrav struct sr_workunit *wu; 993*59c8e88eSDag-Erling Smørgrav struct sr_crypto_wu *crwu; 994*59c8e88eSDag-Erling Smørgrav 995*59c8e88eSDag-Erling Smørgrav DNPRINTF(SR_D_DIS, "%s: sr_crypto_free_resources\n", 996*59c8e88eSDag-Erling Smørgrav DEVNAME(sd->sd_sc)); 997*59c8e88eSDag-Erling Smørgrav 998*59c8e88eSDag-Erling Smørgrav if (sd->mds.mdd_crypto.key_disk != NULL) { 999*59c8e88eSDag-Erling Smørgrav explicit_bzero(sd->mds.mdd_crypto.key_disk, 1000*59c8e88eSDag-Erling Smørgrav sizeof(*sd->mds.mdd_crypto.key_disk)); 1001*59c8e88eSDag-Erling Smørgrav free(sd->mds.mdd_crypto.key_disk, M_DEVBUF, 1002*59c8e88eSDag-Erling Smørgrav sizeof(*sd->mds.mdd_crypto.key_disk)); 1003*59c8e88eSDag-Erling Smørgrav } 1004*59c8e88eSDag-Erling Smørgrav 1005*59c8e88eSDag-Erling Smørgrav sr_hotplug_unregister(sd, sr_crypto_hotplug); 1006*59c8e88eSDag-Erling Smørgrav 1007*59c8e88eSDag-Erling Smørgrav sr_crypto_free_sessions(sd); 1008*59c8e88eSDag-Erling Smørgrav 1009*59c8e88eSDag-Erling Smørgrav TAILQ_FOREACH(wu, &sd->sd_wu, swu_next) { 1010*59c8e88eSDag-Erling Smørgrav crwu = (struct sr_crypto_wu *)wu; 1011*59c8e88eSDag-Erling Smørgrav if (crwu->cr_dmabuf) 1012*59c8e88eSDag-Erling Smørgrav dma_free(crwu->cr_dmabuf, MAXPHYS); 1013*59c8e88eSDag-Erling Smørgrav if (crwu->cr_crp) 1014*59c8e88eSDag-Erling Smørgrav crypto_freereq(crwu->cr_crp); 1015*59c8e88eSDag-Erling Smørgrav } 1016*59c8e88eSDag-Erling Smørgrav 1017*59c8e88eSDag-Erling Smørgrav sr_wu_free(sd); 1018*59c8e88eSDag-Erling Smørgrav sr_ccb_free(sd); 1019*59c8e88eSDag-Erling Smørgrav} 1020*59c8e88eSDag-Erling Smørgrav 1021*59c8e88eSDag-Erling Smørgravint 1022*59c8e88eSDag-Erling Smørgravsr_crypto_ioctl(struct sr_discipline *sd, struct bioc_discipline *bd) 1023*59c8e88eSDag-Erling Smørgrav{ 1024*59c8e88eSDag-Erling Smørgrav struct sr_crypto_kdfpair kdfpair; 1025*59c8e88eSDag-Erling Smørgrav struct sr_crypto_kdfinfo kdfinfo1, kdfinfo2; 1026*59c8e88eSDag-Erling Smørgrav int size, rv = 1; 1027*59c8e88eSDag-Erling Smørgrav 1028*59c8e88eSDag-Erling Smørgrav DNPRINTF(SR_D_IOCTL, "%s: sr_crypto_ioctl %u\n", 1029*59c8e88eSDag-Erling Smørgrav DEVNAME(sd->sd_sc), bd->bd_cmd); 1030*59c8e88eSDag-Erling Smørgrav 1031*59c8e88eSDag-Erling Smørgrav switch (bd->bd_cmd) { 1032*59c8e88eSDag-Erling Smørgrav case SR_IOCTL_GET_KDFHINT: 1033*59c8e88eSDag-Erling Smørgrav 1034*59c8e88eSDag-Erling Smørgrav /* Get KDF hint for userland. */ 1035*59c8e88eSDag-Erling Smørgrav size = sizeof(sd->mds.mdd_crypto.scr_meta->scm_kdfhint); 1036*59c8e88eSDag-Erling Smørgrav if (bd->bd_data == NULL || bd->bd_size > size) 1037*59c8e88eSDag-Erling Smørgrav goto bad; 1038*59c8e88eSDag-Erling Smørgrav if (copyout(sd->mds.mdd_crypto.scr_meta->scm_kdfhint, 1039*59c8e88eSDag-Erling Smørgrav bd->bd_data, bd->bd_size)) 1040*59c8e88eSDag-Erling Smørgrav goto bad; 1041*59c8e88eSDag-Erling Smørgrav 1042*59c8e88eSDag-Erling Smørgrav rv = 0; 1043*59c8e88eSDag-Erling Smørgrav 1044*59c8e88eSDag-Erling Smørgrav break; 1045*59c8e88eSDag-Erling Smørgrav 1046*59c8e88eSDag-Erling Smørgrav case SR_IOCTL_CHANGE_PASSPHRASE: 1047*59c8e88eSDag-Erling Smørgrav 1048*59c8e88eSDag-Erling Smørgrav /* Attempt to change passphrase. */ 1049*59c8e88eSDag-Erling Smørgrav 1050*59c8e88eSDag-Erling Smørgrav size = sizeof(kdfpair); 1051*59c8e88eSDag-Erling Smørgrav if (bd->bd_data == NULL || bd->bd_size > size) 1052*59c8e88eSDag-Erling Smørgrav goto bad; 1053*59c8e88eSDag-Erling Smørgrav if (copyin(bd->bd_data, &kdfpair, size)) 1054*59c8e88eSDag-Erling Smørgrav goto bad; 1055*59c8e88eSDag-Erling Smørgrav 1056*59c8e88eSDag-Erling Smørgrav size = sizeof(kdfinfo1); 1057*59c8e88eSDag-Erling Smørgrav if (kdfpair.kdfinfo1 == NULL || kdfpair.kdfsize1 > size) 1058*59c8e88eSDag-Erling Smørgrav goto bad; 1059*59c8e88eSDag-Erling Smørgrav if (copyin(kdfpair.kdfinfo1, &kdfinfo1, size)) 1060*59c8e88eSDag-Erling Smørgrav goto bad; 1061*59c8e88eSDag-Erling Smørgrav 1062*59c8e88eSDag-Erling Smørgrav size = sizeof(kdfinfo2); 1063*59c8e88eSDag-Erling Smørgrav if (kdfpair.kdfinfo2 == NULL || kdfpair.kdfsize2 > size) 1064*59c8e88eSDag-Erling Smørgrav goto bad; 1065*59c8e88eSDag-Erling Smørgrav if (copyin(kdfpair.kdfinfo2, &kdfinfo2, size)) 1066*59c8e88eSDag-Erling Smørgrav goto bad; 1067*59c8e88eSDag-Erling Smørgrav 1068*59c8e88eSDag-Erling Smørgrav if (sr_crypto_change_maskkey(sd, &kdfinfo1, &kdfinfo2)) 1069*59c8e88eSDag-Erling Smørgrav goto bad; 1070*59c8e88eSDag-Erling Smørgrav 1071*59c8e88eSDag-Erling Smørgrav /* Save metadata to disk. */ 1072*59c8e88eSDag-Erling Smørgrav rv = sr_meta_save(sd, SR_META_DIRTY); 1073*59c8e88eSDag-Erling Smørgrav 1074*59c8e88eSDag-Erling Smørgrav break; 1075*59c8e88eSDag-Erling Smørgrav } 1076*59c8e88eSDag-Erling Smørgrav 1077*59c8e88eSDag-Erling Smørgravbad: 1078*59c8e88eSDag-Erling Smørgrav explicit_bzero(&kdfpair, sizeof(kdfpair)); 1079*59c8e88eSDag-Erling Smørgrav explicit_bzero(&kdfinfo1, sizeof(kdfinfo1)); 1080*59c8e88eSDag-Erling Smørgrav explicit_bzero(&kdfinfo2, sizeof(kdfinfo2)); 1081*59c8e88eSDag-Erling Smørgrav 1082*59c8e88eSDag-Erling Smørgrav return (rv); 1083*59c8e88eSDag-Erling Smørgrav} 1084*59c8e88eSDag-Erling Smørgrav 1085*59c8e88eSDag-Erling Smørgravint 1086*59c8e88eSDag-Erling Smørgravsr_crypto_meta_opt_handler(struct sr_discipline *sd, struct sr_meta_opt_hdr *om) 1087*59c8e88eSDag-Erling Smørgrav{ 1088*59c8e88eSDag-Erling Smørgrav int rv = EINVAL; 1089*59c8e88eSDag-Erling Smørgrav 1090*59c8e88eSDag-Erling Smørgrav if (om->som_type == SR_OPT_CRYPTO) { 1091*59c8e88eSDag-Erling Smørgrav sd->mds.mdd_crypto.scr_meta = (struct sr_meta_crypto *)om; 1092*59c8e88eSDag-Erling Smørgrav rv = 0; 1093*59c8e88eSDag-Erling Smørgrav } 1094*59c8e88eSDag-Erling Smørgrav 1095*59c8e88eSDag-Erling Smørgrav return (rv); 1096*59c8e88eSDag-Erling Smørgrav} 1097*59c8e88eSDag-Erling Smørgrav 1098*59c8e88eSDag-Erling Smørgravint 1099*59c8e88eSDag-Erling Smørgravsr_crypto_rw(struct sr_workunit *wu) 1100*59c8e88eSDag-Erling Smørgrav{ 1101*59c8e88eSDag-Erling Smørgrav struct sr_crypto_wu *crwu; 1102*59c8e88eSDag-Erling Smørgrav daddr_t blkno; 1103*59c8e88eSDag-Erling Smørgrav int rv = 0; 1104*59c8e88eSDag-Erling Smørgrav 1105*59c8e88eSDag-Erling Smørgrav DNPRINTF(SR_D_DIS, "%s: sr_crypto_rw wu %p\n", 1106*59c8e88eSDag-Erling Smørgrav DEVNAME(wu->swu_dis->sd_sc), wu); 1107*59c8e88eSDag-Erling Smørgrav 1108*59c8e88eSDag-Erling Smørgrav if (sr_validate_io(wu, &blkno, "sr_crypto_rw")) 1109*59c8e88eSDag-Erling Smørgrav return (1); 1110*59c8e88eSDag-Erling Smørgrav 1111*59c8e88eSDag-Erling Smørgrav if (wu->swu_xs->flags & SCSI_DATA_OUT) { 1112*59c8e88eSDag-Erling Smørgrav crwu = sr_crypto_prepare(wu, 1); 1113*59c8e88eSDag-Erling Smørgrav crwu->cr_crp->crp_callback = sr_crypto_write; 1114*59c8e88eSDag-Erling Smørgrav rv = crypto_dispatch(crwu->cr_crp); 1115*59c8e88eSDag-Erling Smørgrav if (rv == 0) 1116*59c8e88eSDag-Erling Smørgrav rv = crwu->cr_crp->crp_etype; 1117*59c8e88eSDag-Erling Smørgrav } else 1118*59c8e88eSDag-Erling Smørgrav rv = sr_crypto_dev_rw(wu, NULL); 1119*59c8e88eSDag-Erling Smørgrav 1120*59c8e88eSDag-Erling Smørgrav return (rv); 1121*59c8e88eSDag-Erling Smørgrav} 1122*59c8e88eSDag-Erling Smørgrav 1123*59c8e88eSDag-Erling Smørgravvoid 1124*59c8e88eSDag-Erling Smørgravsr_crypto_write(struct cryptop *crp) 1125*59c8e88eSDag-Erling Smørgrav{ 1126*59c8e88eSDag-Erling Smørgrav struct sr_crypto_wu *crwu = crp->crp_opaque; 1127*59c8e88eSDag-Erling Smørgrav struct sr_workunit *wu = &crwu->cr_wu; 1128*59c8e88eSDag-Erling Smørgrav int s; 1129*59c8e88eSDag-Erling Smørgrav 1130*59c8e88eSDag-Erling Smørgrav DNPRINTF(SR_D_INTR, "%s: sr_crypto_write: wu %p xs: %p\n", 1131*59c8e88eSDag-Erling Smørgrav DEVNAME(wu->swu_dis->sd_sc), wu, wu->swu_xs); 1132*59c8e88eSDag-Erling Smørgrav 1133*59c8e88eSDag-Erling Smørgrav if (crp->crp_etype) { 1134*59c8e88eSDag-Erling Smørgrav /* fail io */ 1135*59c8e88eSDag-Erling Smørgrav wu->swu_xs->error = XS_DRIVER_STUFFUP; 1136*59c8e88eSDag-Erling Smørgrav s = splbio(); 1137*59c8e88eSDag-Erling Smørgrav sr_scsi_done(wu->swu_dis, wu->swu_xs); 1138*59c8e88eSDag-Erling Smørgrav splx(s); 1139*59c8e88eSDag-Erling Smørgrav } 1140*59c8e88eSDag-Erling Smørgrav 1141*59c8e88eSDag-Erling Smørgrav sr_crypto_dev_rw(wu, crwu); 1142*59c8e88eSDag-Erling Smørgrav} 1143*59c8e88eSDag-Erling Smørgrav 1144*59c8e88eSDag-Erling Smørgravint 1145*59c8e88eSDag-Erling Smørgravsr_crypto_dev_rw(struct sr_workunit *wu, struct sr_crypto_wu *crwu) 1146*59c8e88eSDag-Erling Smørgrav{ 1147*59c8e88eSDag-Erling Smørgrav struct sr_discipline *sd = wu->swu_dis; 1148*59c8e88eSDag-Erling Smørgrav struct scsi_xfer *xs = wu->swu_xs; 1149*59c8e88eSDag-Erling Smørgrav struct sr_ccb *ccb; 1150*59c8e88eSDag-Erling Smørgrav struct uio *uio; 1151*59c8e88eSDag-Erling Smørgrav daddr_t blkno; 1152*59c8e88eSDag-Erling Smørgrav 1153*59c8e88eSDag-Erling Smørgrav blkno = wu->swu_blk_start; 1154*59c8e88eSDag-Erling Smørgrav 1155*59c8e88eSDag-Erling Smørgrav ccb = sr_ccb_rw(sd, 0, blkno, xs->datalen, xs->data, xs->flags, 0); 1156*59c8e88eSDag-Erling Smørgrav if (!ccb) { 1157*59c8e88eSDag-Erling Smørgrav /* should never happen but handle more gracefully */ 1158*59c8e88eSDag-Erling Smørgrav printf("%s: %s: too many ccbs queued\n", 1159*59c8e88eSDag-Erling Smørgrav DEVNAME(sd->sd_sc), sd->sd_meta->ssd_devname); 1160*59c8e88eSDag-Erling Smørgrav goto bad; 1161*59c8e88eSDag-Erling Smørgrav } 1162*59c8e88eSDag-Erling Smørgrav if (!ISSET(xs->flags, SCSI_DATA_IN)) { 1163*59c8e88eSDag-Erling Smørgrav uio = crwu->cr_crp->crp_buf; 1164*59c8e88eSDag-Erling Smørgrav ccb->ccb_buf.b_data = uio->uio_iov->iov_base; 1165*59c8e88eSDag-Erling Smørgrav ccb->ccb_opaque = crwu; 1166*59c8e88eSDag-Erling Smørgrav } 1167*59c8e88eSDag-Erling Smørgrav sr_wu_enqueue_ccb(wu, ccb); 1168*59c8e88eSDag-Erling Smørgrav sr_schedule_wu(wu); 1169*59c8e88eSDag-Erling Smørgrav 1170*59c8e88eSDag-Erling Smørgrav return (0); 1171*59c8e88eSDag-Erling Smørgrav 1172*59c8e88eSDag-Erling Smørgravbad: 1173*59c8e88eSDag-Erling Smørgrav /* wu is unwound by sr_wu_put */ 1174*59c8e88eSDag-Erling Smørgrav if (crwu) 1175*59c8e88eSDag-Erling Smørgrav crwu->cr_crp->crp_etype = EINVAL; 1176*59c8e88eSDag-Erling Smørgrav return (1); 1177*59c8e88eSDag-Erling Smørgrav} 1178*59c8e88eSDag-Erling Smørgrav 1179*59c8e88eSDag-Erling Smørgravvoid 1180*59c8e88eSDag-Erling Smørgravsr_crypto_done(struct sr_workunit *wu) 1181*59c8e88eSDag-Erling Smørgrav{ 1182*59c8e88eSDag-Erling Smørgrav struct scsi_xfer *xs = wu->swu_xs; 1183*59c8e88eSDag-Erling Smørgrav struct sr_crypto_wu *crwu; 1184*59c8e88eSDag-Erling Smørgrav int s; 1185*59c8e88eSDag-Erling Smørgrav 1186*59c8e88eSDag-Erling Smørgrav /* If this was a successful read, initiate decryption of the data. */ 1187*59c8e88eSDag-Erling Smørgrav if (ISSET(xs->flags, SCSI_DATA_IN) && xs->error == XS_NOERROR) { 1188*59c8e88eSDag-Erling Smørgrav crwu = sr_crypto_prepare(wu, 0); 1189*59c8e88eSDag-Erling Smørgrav crwu->cr_crp->crp_callback = sr_crypto_read; 1190*59c8e88eSDag-Erling Smørgrav DNPRINTF(SR_D_INTR, "%s: sr_crypto_done: crypto_dispatch %p\n", 1191*59c8e88eSDag-Erling Smørgrav DEVNAME(wu->swu_dis->sd_sc), crwu->cr_crp); 1192*59c8e88eSDag-Erling Smørgrav crypto_dispatch(crwu->cr_crp); 1193*59c8e88eSDag-Erling Smørgrav return; 1194*59c8e88eSDag-Erling Smørgrav } 1195*59c8e88eSDag-Erling Smørgrav 1196*59c8e88eSDag-Erling Smørgrav s = splbio(); 1197*59c8e88eSDag-Erling Smørgrav sr_scsi_done(wu->swu_dis, wu->swu_xs); 1198*59c8e88eSDag-Erling Smørgrav splx(s); 1199*59c8e88eSDag-Erling Smørgrav} 1200*59c8e88eSDag-Erling Smørgrav 1201*59c8e88eSDag-Erling Smørgravvoid 1202*59c8e88eSDag-Erling Smørgravsr_crypto_read(struct cryptop *crp) 1203*59c8e88eSDag-Erling Smørgrav{ 1204*59c8e88eSDag-Erling Smørgrav struct sr_crypto_wu *crwu = crp->crp_opaque; 1205*59c8e88eSDag-Erling Smørgrav struct sr_workunit *wu = &crwu->cr_wu; 1206*59c8e88eSDag-Erling Smørgrav int s; 1207*59c8e88eSDag-Erling Smørgrav 1208*59c8e88eSDag-Erling Smørgrav DNPRINTF(SR_D_INTR, "%s: sr_crypto_read: wu %p xs: %p\n", 1209*59c8e88eSDag-Erling Smørgrav DEVNAME(wu->swu_dis->sd_sc), wu, wu->swu_xs); 1210*59c8e88eSDag-Erling Smørgrav 1211*59c8e88eSDag-Erling Smørgrav if (crp->crp_etype) 1212*59c8e88eSDag-Erling Smørgrav wu->swu_xs->error = XS_DRIVER_STUFFUP; 1213*59c8e88eSDag-Erling Smørgrav 1214*59c8e88eSDag-Erling Smørgrav s = splbio(); 1215*59c8e88eSDag-Erling Smørgrav sr_scsi_done(wu->swu_dis, wu->swu_xs); 1216*59c8e88eSDag-Erling Smørgrav splx(s); 1217*59c8e88eSDag-Erling Smørgrav} 1218*59c8e88eSDag-Erling Smørgrav 1219*59c8e88eSDag-Erling Smørgravvoid 1220*59c8e88eSDag-Erling Smørgravsr_crypto_hotplug(struct sr_discipline *sd, struct disk *diskp, int action) 1221*59c8e88eSDag-Erling Smørgrav{ 1222*59c8e88eSDag-Erling Smørgrav DNPRINTF(SR_D_MISC, "%s: sr_crypto_hotplug: %s %d\n", 1223*59c8e88eSDag-Erling Smørgrav DEVNAME(sd->sd_sc), diskp->dk_name, action); 1224*59c8e88eSDag-Erling Smørgrav} 1225*59c8e88eSDag-Erling Smørgrav 1226*59c8e88eSDag-Erling Smørgrav#ifdef SR_DEBUG0 1227*59c8e88eSDag-Erling Smørgravvoid 1228*59c8e88eSDag-Erling Smørgravsr_crypto_dumpkeys(struct sr_discipline *sd) 1229*59c8e88eSDag-Erling Smørgrav{ 1230*59c8e88eSDag-Erling Smørgrav int i, j; 1231*59c8e88eSDag-Erling Smørgrav 1232*59c8e88eSDag-Erling Smørgrav printf("sr_crypto_dumpkeys:\n"); 1233*59c8e88eSDag-Erling Smørgrav for (i = 0; i < SR_CRYPTO_MAXKEYS; i++) { 1234*59c8e88eSDag-Erling Smørgrav printf("\tscm_key[%d]: 0x", i); 1235*59c8e88eSDag-Erling Smørgrav for (j = 0; j < SR_CRYPTO_KEYBYTES; j++) { 1236*59c8e88eSDag-Erling Smørgrav printf("%02x", 1237*59c8e88eSDag-Erling Smørgrav sd->mds.mdd_crypto.scr_meta->scm_key[i][j]); 1238*59c8e88eSDag-Erling Smørgrav } 1239*59c8e88eSDag-Erling Smørgrav printf("\n"); 1240*59c8e88eSDag-Erling Smørgrav } 1241*59c8e88eSDag-Erling Smørgrav printf("sr_crypto_dumpkeys: runtime data keys:\n"); 1242*59c8e88eSDag-Erling Smørgrav for (i = 0; i < SR_CRYPTO_MAXKEYS; i++) { 1243*59c8e88eSDag-Erling Smørgrav printf("\tscr_key[%d]: 0x", i); 1244*59c8e88eSDag-Erling Smørgrav for (j = 0; j < SR_CRYPTO_KEYBYTES; j++) { 1245*59c8e88eSDag-Erling Smørgrav printf("%02x", 1246*59c8e88eSDag-Erling Smørgrav sd->mds.mdd_crypto.scr_key[i][j]); 1247*59c8e88eSDag-Erling Smørgrav } 1248*59c8e88eSDag-Erling Smørgrav printf("\n"); 1249*59c8e88eSDag-Erling Smørgrav } 1250*59c8e88eSDag-Erling Smørgrav} 1251*59c8e88eSDag-Erling Smørgrav#endif /* SR_DEBUG */ 1252