| g_eli_privacy.c (214116) | g_eli_privacy.c (214118) |
|---|---|
| 1/*- 2 * Copyright (c) 2005-2010 Pawel Jakub Dawidek <pjd@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 11 unchanged lines hidden (view full) --- 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> | 1/*- 2 * Copyright (c) 2005-2010 Pawel Jakub Dawidek <pjd@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright --- 11 unchanged lines hidden (view full) --- 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> |
| 28__FBSDID("$FreeBSD: head/sys/geom/eli/g_eli_privacy.c 214116 2010-10-20 20:01:45Z pjd $"); | 28__FBSDID("$FreeBSD: head/sys/geom/eli/g_eli_privacy.c 214118 2010-10-20 20:50:55Z pjd $"); |
| 29 30#include <sys/param.h> 31#include <sys/systm.h> 32#include <sys/kernel.h> 33#include <sys/linker.h> 34#include <sys/module.h> 35#include <sys/lock.h> 36#include <sys/mutex.h> --- 11 unchanged lines hidden (view full) --- 48 49#include <geom/geom.h> 50#include <geom/eli/g_eli.h> 51#include <geom/eli/pkcs5v2.h> 52 53/* 54 * Code paths: 55 * BIO_READ: | 29 30#include <sys/param.h> 31#include <sys/systm.h> 32#include <sys/kernel.h> 33#include <sys/linker.h> 34#include <sys/module.h> 35#include <sys/lock.h> 36#include <sys/mutex.h> --- 11 unchanged lines hidden (view full) --- 48 49#include <geom/geom.h> 50#include <geom/eli/g_eli.h> 51#include <geom/eli/pkcs5v2.h> 52 53/* 54 * Code paths: 55 * BIO_READ: |
| 56 * g_eli_start -> g_io_request -> g_eli_read_done -> g_eli_crypto_run -> g_eli_crypto_read_done -> g_io_deliver | 56 * 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 |
| 57 * BIO_WRITE: 58 * g_eli_start -> g_eli_crypto_run -> g_eli_crypto_write_done -> g_io_request -> g_eli_write_done -> g_io_deliver 59 */ 60 61MALLOC_DECLARE(M_ELI); 62 63/* 64 * The function is called after we read and decrypt data. 65 * | 57 * BIO_WRITE: 58 * g_eli_start -> g_eli_crypto_run -> g_eli_crypto_write_done -> g_io_request -> g_eli_write_done -> g_io_deliver 59 */ 60 61MALLOC_DECLARE(M_ELI); 62 63/* 64 * The function is called after we read and decrypt data. 65 * |
| 66 * g_eli_start -> g_io_request -> g_eli_read_done -> g_eli_crypto_run -> G_ELI_CRYPTO_READ_DONE -> g_io_deliver | 66 * 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 |
| 67 */ 68static int 69g_eli_crypto_read_done(struct cryptop *crp) 70{ | 67 */ 68static int 69g_eli_crypto_read_done(struct cryptop *crp) 70{ |
| 71 struct g_eli_softc *sc; |
|
| 71 struct bio *bp; 72 73 if (crp->crp_etype == EAGAIN) { 74 if (g_eli_crypto_rerun(crp) == 0) 75 return (0); 76 } 77 bp = (struct bio *)crp->crp_opaque; 78 bp->bio_inbed++; --- 17 unchanged lines hidden (view full) --- 96 if (bp->bio_error != 0) { 97 G_ELI_LOGREQ(0, bp, "Crypto READ request failed (error=%d).", 98 bp->bio_error); 99 bp->bio_completed = 0; 100 } 101 /* 102 * Read is finished, send it up. 103 */ | 72 struct bio *bp; 73 74 if (crp->crp_etype == EAGAIN) { 75 if (g_eli_crypto_rerun(crp) == 0) 76 return (0); 77 } 78 bp = (struct bio *)crp->crp_opaque; 79 bp->bio_inbed++; --- 17 unchanged lines hidden (view full) --- 97 if (bp->bio_error != 0) { 98 G_ELI_LOGREQ(0, bp, "Crypto READ request failed (error=%d).", 99 bp->bio_error); 100 bp->bio_completed = 0; 101 } 102 /* 103 * Read is finished, send it up. 104 */ |
| 105 sc = bp->bio_to->geom->softc; |
|
| 104 g_io_deliver(bp, bp->bio_error); | 106 g_io_deliver(bp, bp->bio_error); |
| 107 atomic_subtract_int(&sc->sc_inflight, 1); |
|
| 105 return (0); 106} 107 108/* 109 * The function is called after data encryption. 110 * 111 * g_eli_start -> g_eli_crypto_run -> G_ELI_CRYPTO_WRITE_DONE -> g_io_request -> g_eli_write_done -> g_io_deliver 112 */ 113static int 114g_eli_crypto_write_done(struct cryptop *crp) 115{ | 108 return (0); 109} 110 111/* 112 * The function is called after data encryption. 113 * 114 * g_eli_start -> g_eli_crypto_run -> G_ELI_CRYPTO_WRITE_DONE -> g_io_request -> g_eli_write_done -> g_io_deliver 115 */ 116static int 117g_eli_crypto_write_done(struct cryptop *crp) 118{ |
| 119 struct g_eli_softc *sc; |
|
| 116 struct g_geom *gp; 117 struct g_consumer *cp; 118 struct bio *bp, *cbp; 119 120 if (crp->crp_etype == EAGAIN) { 121 if (g_eli_crypto_rerun(crp) == 0) 122 return (0); 123 } --- 12 unchanged lines hidden (view full) --- 136 * All sectors are already encrypted? 137 */ 138 if (bp->bio_inbed < bp->bio_children) 139 return (0); 140 bp->bio_inbed = 0; 141 bp->bio_children = 1; 142 cbp = bp->bio_driver1; 143 bp->bio_driver1 = NULL; | 120 struct g_geom *gp; 121 struct g_consumer *cp; 122 struct bio *bp, *cbp; 123 124 if (crp->crp_etype == EAGAIN) { 125 if (g_eli_crypto_rerun(crp) == 0) 126 return (0); 127 } --- 12 unchanged lines hidden (view full) --- 140 * All sectors are already encrypted? 141 */ 142 if (bp->bio_inbed < bp->bio_children) 143 return (0); 144 bp->bio_inbed = 0; 145 bp->bio_children = 1; 146 cbp = bp->bio_driver1; 147 bp->bio_driver1 = NULL; |
| 148 gp = bp->bio_to->geom; |
|
| 144 if (bp->bio_error != 0) { 145 G_ELI_LOGREQ(0, bp, "Crypto WRITE request failed (error=%d).", 146 bp->bio_error); 147 free(bp->bio_driver2, M_ELI); 148 bp->bio_driver2 = NULL; 149 g_destroy_bio(cbp); | 149 if (bp->bio_error != 0) { 150 G_ELI_LOGREQ(0, bp, "Crypto WRITE request failed (error=%d).", 151 bp->bio_error); 152 free(bp->bio_driver2, M_ELI); 153 bp->bio_driver2 = NULL; 154 g_destroy_bio(cbp); |
| 155 sc = gp->softc; |
|
| 150 g_io_deliver(bp, bp->bio_error); | 156 g_io_deliver(bp, bp->bio_error); |
| 157 atomic_subtract_int(&sc->sc_inflight, 1); |
|
| 151 return (0); 152 } 153 cbp->bio_data = bp->bio_driver2; 154 cbp->bio_done = g_eli_write_done; | 158 return (0); 159 } 160 cbp->bio_data = bp->bio_driver2; 161 cbp->bio_done = g_eli_write_done; |
| 155 gp = bp->bio_to->geom; | |
| 156 cp = LIST_FIRST(&gp->consumer); 157 cbp->bio_to = cp->provider; 158 G_ELI_LOGREQ(2, cbp, "Sending request."); 159 /* 160 * Send encrypted data to the provider. 161 */ 162 g_io_request(cbp, cp); 163 return (0); 164} 165 166/* | 162 cp = LIST_FIRST(&gp->consumer); 163 cbp->bio_to = cp->provider; 164 G_ELI_LOGREQ(2, cbp, "Sending request."); 165 /* 166 * Send encrypted data to the provider. 167 */ 168 g_io_request(cbp, cp); 169 return (0); 170} 171 172/* |
| 173 * The function is called to read encrypted data. 174 * 175 * 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 176 */ 177void 178g_eli_crypto_read(struct g_eli_softc *sc, struct bio *bp, boolean_t fromworker) 179{ 180 struct g_consumer *cp; 181 struct bio *cbp; 182 183 if (!fromworker) { 184 /* 185 * We are not called from the worker thread, so check if 186 * device is suspended. 187 */ 188 mtx_lock(&sc->sc_queue_mtx); 189 if (sc->sc_flags & G_ELI_FLAG_SUSPEND) { 190 /* 191 * If device is suspended, we place the request onto 192 * the queue, so it can be handled after resume. 193 */ 194 G_ELI_DEBUG(0, "device suspended, move onto queue"); 195 bioq_insert_tail(&sc->sc_queue, bp); 196 mtx_unlock(&sc->sc_queue_mtx); 197 wakeup(sc); 198 return; 199 } 200 atomic_add_int(&sc->sc_inflight, 1); 201 mtx_unlock(&sc->sc_queue_mtx); 202 } 203 bp->bio_pflags = 0; 204 bp->bio_driver2 = NULL; 205 cbp = bp->bio_driver1; 206 cbp->bio_done = g_eli_read_done; 207 cp = LIST_FIRST(&sc->sc_geom->consumer); 208 cbp->bio_to = cp->provider; 209 G_ELI_LOGREQ(2, cbp, "Sending request."); 210 /* 211 * Read encrypted data from provider. 212 */ 213 g_io_request(cbp, cp); 214} 215 216/* |
|
| 167 * This is the main function responsible for cryptography (ie. communication 168 * with crypto(9) subsystem). 169 * 170 * BIO_READ: | 217 * This is the main function responsible for cryptography (ie. communication 218 * with crypto(9) subsystem). 219 * 220 * BIO_READ: |
| 171 * g_eli_start -> g_io_request -> g_eli_read_done -> G_ELI_CRYPTO_RUN -> g_eli_crypto_read_done -> g_io_deliver | 221 * 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 |
| 172 * BIO_WRITE: 173 * g_eli_start -> G_ELI_CRYPTO_RUN -> g_eli_crypto_write_done -> g_io_request -> g_eli_write_done -> g_io_deliver 174 */ 175void 176g_eli_crypto_run(struct g_eli_worker *wr, struct bio *bp) 177{ 178 struct g_eli_softc *sc; 179 struct cryptop *crp; --- 101 unchanged lines hidden --- | 222 * BIO_WRITE: 223 * g_eli_start -> G_ELI_CRYPTO_RUN -> g_eli_crypto_write_done -> g_io_request -> g_eli_write_done -> g_io_deliver 224 */ 225void 226g_eli_crypto_run(struct g_eli_worker *wr, struct bio *bp) 227{ 228 struct g_eli_softc *sc; 229 struct cryptop *crp; --- 101 unchanged lines hidden --- |