g_uzip.c (256281) | g_uzip.c (266220) |
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1/*- 2 * Copyright (c) 2004 Max Khon 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) 2004 Max Khon 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: stable/10/sys/geom/uzip/g_uzip.c 239790 2012-08-28 19:28:31Z ed $"); | 28__FBSDID("$FreeBSD: stable/10/sys/geom/uzip/g_uzip.c 266220 2014-05-16 14:28:55Z loos $"); |
29 30#include <sys/param.h> 31#include <sys/bio.h> 32#include <sys/endian.h> 33#include <sys/errno.h> 34#include <sys/kernel.h> 35#include <sys/lock.h> 36#include <sys/mutex.h> 37#include <sys/malloc.h> | 29 30#include <sys/param.h> 31#include <sys/bio.h> 32#include <sys/endian.h> 33#include <sys/errno.h> 34#include <sys/kernel.h> 35#include <sys/lock.h> 36#include <sys/mutex.h> 37#include <sys/malloc.h> |
38#include <sys/systm.h> | |
39#include <sys/sysctl.h> | 38#include <sys/sysctl.h> |
39#include <sys/systm.h> |
|
40 41#include <geom/geom.h> 42#include <net/zlib.h> 43 44FEATURE(geom_uzip, "GEOM uzip read-only compressed disks support"); 45 46#undef GEOM_UZIP_DEBUG 47#ifdef GEOM_UZIP_DEBUG | 40 41#include <geom/geom.h> 42#include <net/zlib.h> 43 44FEATURE(geom_uzip, "GEOM uzip read-only compressed disks support"); 45 46#undef GEOM_UZIP_DEBUG 47#ifdef GEOM_UZIP_DEBUG |
48#define DPRINTF(a) printf a | 48#define DPRINTF(a) printf a |
49#else | 49#else |
50#define DPRINTF(a) | 50#define DPRINTF(a) |
51#endif 52 53static MALLOC_DEFINE(M_GEOM_UZIP, "geom_uzip", "GEOM UZIP data structures"); 54 | 51#endif 52 53static MALLOC_DEFINE(M_GEOM_UZIP, "geom_uzip", "GEOM UZIP data structures"); 54 |
55#define UZIP_CLASS_NAME "UZIP" | 55#define UZIP_CLASS_NAME "UZIP" |
56 57/* 58 * Maximum allowed valid block size (to prevent foot-shooting) 59 */ | 56 57/* 58 * Maximum allowed valid block size (to prevent foot-shooting) 59 */ |
60#define MAX_BLKSZ (MAXPHYS - MAXPHYS / 1000 - 12) | 60#define MAX_BLKSZ (MAXPHYS - MAXPHYS / 1000 - 12) |
61 62/* 63 * Integer values (block size, number of blocks, offsets) 64 * are stored in big-endian (network) order on disk and struct cloop_header 65 * and in native order in struct g_uzip_softc 66 */ 67 | 61 62/* 63 * Integer values (block size, number of blocks, offsets) 64 * are stored in big-endian (network) order on disk and struct cloop_header 65 * and in native order in struct g_uzip_softc 66 */ 67 |
68#define CLOOP_MAGIC_LEN 128 | 68#define CLOOP_MAGIC_LEN 128 |
69static char CLOOP_MAGIC_START[] = "#!/bin/sh\n"; 70 71struct cloop_header { 72 char magic[CLOOP_MAGIC_LEN]; /* cloop magic */ 73 uint32_t blksz; /* block size */ 74 uint32_t nblocks; /* number of blocks */ 75}; 76 --- 7 unchanged lines hidden (view full) --- 84 char *last_buf; /* last blk data */ 85 int req_total; /* total requests */ 86 int req_cached; /* cached requests */ 87}; 88 89static void 90g_uzip_softc_free(struct g_uzip_softc *sc, struct g_geom *gp) 91{ | 69static char CLOOP_MAGIC_START[] = "#!/bin/sh\n"; 70 71struct cloop_header { 72 char magic[CLOOP_MAGIC_LEN]; /* cloop magic */ 73 uint32_t blksz; /* block size */ 74 uint32_t nblocks; /* number of blocks */ 75}; 76 --- 7 unchanged lines hidden (view full) --- 84 char *last_buf; /* last blk data */ 85 int req_total; /* total requests */ 86 int req_cached; /* cached requests */ 87}; 88 89static void 90g_uzip_softc_free(struct g_uzip_softc *sc, struct g_geom *gp) 91{ |
92 |
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92 if (gp != NULL) { 93 printf("%s: %d requests, %d cached\n", 94 gp->name, sc->req_total, sc->req_cached); 95 } | 93 if (gp != NULL) { 94 printf("%s: %d requests, %d cached\n", 95 gp->name, sc->req_total, sc->req_cached); 96 } |
96 if (sc->offsets != NULL) | 97 if (sc->offsets != NULL) { |
97 free(sc->offsets, M_GEOM_UZIP); | 98 free(sc->offsets, M_GEOM_UZIP); |
99 sc->offsets = NULL; 100 } |
|
98 mtx_destroy(&sc->last_mtx); 99 free(sc->last_buf, M_GEOM_UZIP); 100 free(sc, M_GEOM_UZIP); 101} 102 103static void * 104z_alloc(void *nil, u_int type, u_int size) 105{ 106 void *ptr; 107 108 ptr = malloc(type * size, M_GEOM_UZIP, M_NOWAIT); | 101 mtx_destroy(&sc->last_mtx); 102 free(sc->last_buf, M_GEOM_UZIP); 103 free(sc, M_GEOM_UZIP); 104} 105 106static void * 107z_alloc(void *nil, u_int type, u_int size) 108{ 109 void *ptr; 110 111 ptr = malloc(type * size, M_GEOM_UZIP, M_NOWAIT); |
109 return ptr; | 112 113 return (ptr); |
110} 111 112static void 113z_free(void *nil, void *ptr) 114{ | 114} 115 116static void 117z_free(void *nil, void *ptr) 118{ |
119 |
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115 free(ptr, M_GEOM_UZIP); 116} 117 118static void 119g_uzip_done(struct bio *bp) 120{ 121 int err; 122 struct bio *bp2; 123 z_stream zs; 124 struct g_provider *pp, *pp2; 125 struct g_consumer *cp; 126 struct g_geom *gp; 127 struct g_uzip_softc *sc; | 120 free(ptr, M_GEOM_UZIP); 121} 122 123static void 124g_uzip_done(struct bio *bp) 125{ 126 int err; 127 struct bio *bp2; 128 z_stream zs; 129 struct g_provider *pp, *pp2; 130 struct g_consumer *cp; 131 struct g_geom *gp; 132 struct g_uzip_softc *sc; |
128 off_t pos, upos; | 133 off_t iolen, pos, upos; |
129 uint32_t start_blk, i; 130 size_t bsize; 131 132 bp2 = bp->bio_parent; 133 pp = bp2->bio_to; 134 gp = pp->geom; 135 cp = LIST_FIRST(&gp->consumer); 136 pp2 = cp->provider; --- 11 unchanged lines hidden (view full) --- 148 zs.zfree = z_free; 149 err = inflateInit(&zs); 150 if (err != Z_OK) { 151 bp2->bio_error = EIO; 152 goto done; 153 } 154 start_blk = bp2->bio_offset / sc->blksz; 155 bsize = pp2->sectorsize; | 134 uint32_t start_blk, i; 135 size_t bsize; 136 137 bp2 = bp->bio_parent; 138 pp = bp2->bio_to; 139 gp = pp->geom; 140 cp = LIST_FIRST(&gp->consumer); 141 pp2 = cp->provider; --- 11 unchanged lines hidden (view full) --- 153 zs.zfree = z_free; 154 err = inflateInit(&zs); 155 if (err != Z_OK) { 156 bp2->bio_error = EIO; 157 goto done; 158 } 159 start_blk = bp2->bio_offset / sc->blksz; 160 bsize = pp2->sectorsize; |
161 iolen = bp->bio_completed; |
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156 pos = sc->offsets[start_blk] % bsize; 157 upos = 0; | 162 pos = sc->offsets[start_blk] % bsize; 163 upos = 0; |
158 DPRINTF(("%s: done: start_blk %d, pos %lld, upos %lld (%lld, %d, %d)\n", 159 gp->name, start_blk, pos, upos, 160 bp2->bio_offset, sc->blksz, bsize)); | 164 DPRINTF(("%s: done: start_blk %d, pos %jd, upos %jd, iolen %jd " 165 "(%jd, %d, %zd)\n", 166 gp->name, start_blk, (intmax_t)pos, (intmax_t)upos, 167 (intmax_t)iolen, (intmax_t)bp2->bio_offset, sc->blksz, bsize)); |
161 for (i = start_blk; upos < bp2->bio_length; i++) { 162 off_t len, ulen, uoff; 163 164 uoff = i == start_blk ? bp2->bio_offset % sc->blksz : 0; 165 ulen = MIN(sc->blksz - uoff, bp2->bio_length - upos); 166 len = sc->offsets[i + 1] - sc->offsets[i]; 167 168 if (len == 0) { 169 /* All zero block: no cache update */ 170 bzero(bp2->bio_data + upos, ulen); 171 upos += ulen; 172 bp2->bio_completed += ulen; 173 continue; 174 } | 168 for (i = start_blk; upos < bp2->bio_length; i++) { 169 off_t len, ulen, uoff; 170 171 uoff = i == start_blk ? bp2->bio_offset % sc->blksz : 0; 172 ulen = MIN(sc->blksz - uoff, bp2->bio_length - upos); 173 len = sc->offsets[i + 1] - sc->offsets[i]; 174 175 if (len == 0) { 176 /* All zero block: no cache update */ 177 bzero(bp2->bio_data + upos, ulen); 178 upos += ulen; 179 bp2->bio_completed += ulen; 180 continue; 181 } |
182 if (len > iolen) { 183 DPRINTF(("%s: done: early termination: len (%jd) > " 184 "iolen (%jd)\n", 185 gp->name, (intmax_t)len, (intmax_t)iolen)); 186 break; 187 } |
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175 zs.next_in = bp->bio_data + pos; 176 zs.avail_in = len; 177 zs.next_out = sc->last_buf; 178 zs.avail_out = sc->blksz; 179 mtx_lock(&sc->last_mtx); 180 err = inflate(&zs, Z_FINISH); 181 if (err != Z_STREAM_END) { 182 sc->last_blk = -1; 183 mtx_unlock(&sc->last_mtx); | 188 zs.next_in = bp->bio_data + pos; 189 zs.avail_in = len; 190 zs.next_out = sc->last_buf; 191 zs.avail_out = sc->blksz; 192 mtx_lock(&sc->last_mtx); 193 err = inflate(&zs, Z_FINISH); 194 if (err != Z_STREAM_END) { 195 sc->last_blk = -1; 196 mtx_unlock(&sc->last_mtx); |
184 DPRINTF(("%s: done: inflate failed (%lld + %lld -> %lld + %lld + %lld)\n", 185 gp->name, pos, len, uoff, upos, ulen)); | 197 DPRINTF(("%s: done: inflate failed (%jd + %jd -> %jd + %jd + %jd)\n", 198 gp->name, (intmax_t)pos, (intmax_t)len, 199 (intmax_t)uoff, (intmax_t)upos, (intmax_t)ulen)); |
186 inflateEnd(&zs); 187 bp2->bio_error = EIO; 188 goto done; 189 } 190 sc->last_blk = i; | 200 inflateEnd(&zs); 201 bp2->bio_error = EIO; 202 goto done; 203 } 204 sc->last_blk = i; |
191 DPRINTF(("%s: done: inflated %lld + %lld -> %lld + %lld + %lld\n", 192 gp->name, 193 pos, len, 194 uoff, upos, ulen)); | 205 DPRINTF(("%s: done: inflated %jd + %jd -> %jd + %jd + %jd\n", 206 gp->name, (intmax_t)pos, (intmax_t)len, (intmax_t)uoff, 207 (intmax_t)upos, (intmax_t)ulen)); |
195 memcpy(bp2->bio_data + upos, sc->last_buf + uoff, ulen); 196 mtx_unlock(&sc->last_mtx); 197 198 pos += len; | 208 memcpy(bp2->bio_data + upos, sc->last_buf + uoff, ulen); 209 mtx_unlock(&sc->last_mtx); 210 211 pos += len; |
212 iolen -= len; |
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199 upos += ulen; 200 bp2->bio_completed += ulen; 201 err = inflateReset(&zs); 202 if (err != Z_OK) { 203 inflateEnd(&zs); 204 bp2->bio_error = EIO; 205 goto done; 206 } 207 } 208 err = inflateEnd(&zs); 209 if (err != Z_OK) { 210 bp2->bio_error = EIO; 211 goto done; 212 } 213 214done: 215 /* 216 * Finish processing the request. 217 */ | 213 upos += ulen; 214 bp2->bio_completed += ulen; 215 err = inflateReset(&zs); 216 if (err != Z_OK) { 217 inflateEnd(&zs); 218 bp2->bio_error = EIO; 219 goto done; 220 } 221 } 222 err = inflateEnd(&zs); 223 if (err != Z_OK) { 224 bp2->bio_error = EIO; 225 goto done; 226 } 227 228done: 229 /* 230 * Finish processing the request. 231 */ |
218 DPRINTF(("%s: done: (%d, %lld, %ld)\n", 219 gp->name, bp2->bio_error, bp2->bio_completed, bp2->bio_resid)); | 232 DPRINTF(("%s: done: (%d, %jd, %ld)\n", 233 gp->name, bp2->bio_error, (intmax_t)bp2->bio_completed, 234 bp2->bio_resid)); |
220 free(bp->bio_data, M_GEOM_UZIP); 221 g_destroy_bio(bp); 222 g_io_deliver(bp2, bp2->bio_error); 223} 224 225static void 226g_uzip_start(struct bio *bp) 227{ --- 15 unchanged lines hidden (view full) --- 243 } 244 245 cp = LIST_FIRST(&gp->consumer); 246 pp2 = cp->provider; 247 sc = gp->softc; 248 249 start_blk = bp->bio_offset / sc->blksz; 250 end_blk = (bp->bio_offset + bp->bio_length + sc->blksz - 1) / sc->blksz; | 235 free(bp->bio_data, M_GEOM_UZIP); 236 g_destroy_bio(bp); 237 g_io_deliver(bp2, bp2->bio_error); 238} 239 240static void 241g_uzip_start(struct bio *bp) 242{ --- 15 unchanged lines hidden (view full) --- 258 } 259 260 cp = LIST_FIRST(&gp->consumer); 261 pp2 = cp->provider; 262 sc = gp->softc; 263 264 start_blk = bp->bio_offset / sc->blksz; 265 end_blk = (bp->bio_offset + bp->bio_length + sc->blksz - 1) / sc->blksz; |
251 KASSERT(start_blk < sc->nblocks, 252 ("start_blk out of range")); 253 KASSERT(end_blk <= sc->nblocks, 254 ("end_blk out of range")); | 266 KASSERT(start_blk < sc->nblocks, ("start_blk out of range")); 267 KASSERT(end_blk <= sc->nblocks, ("end_blk out of range")); |
255 256 sc->req_total++; 257 if (start_blk + 1 == end_blk) { 258 mtx_lock(&sc->last_mtx); 259 if (start_blk == sc->last_blk) { 260 off_t uoff; 261 262 uoff = bp->bio_offset % sc->blksz; 263 KASSERT(bp->bio_length <= sc->blksz - uoff, 264 ("cached data error")); 265 memcpy(bp->bio_data, sc->last_buf + uoff, 266 bp->bio_length); 267 sc->req_cached++; 268 mtx_unlock(&sc->last_mtx); 269 | 268 269 sc->req_total++; 270 if (start_blk + 1 == end_blk) { 271 mtx_lock(&sc->last_mtx); 272 if (start_blk == sc->last_blk) { 273 off_t uoff; 274 275 uoff = bp->bio_offset % sc->blksz; 276 KASSERT(bp->bio_length <= sc->blksz - uoff, 277 ("cached data error")); 278 memcpy(bp->bio_data, sc->last_buf + uoff, 279 bp->bio_length); 280 sc->req_cached++; 281 mtx_unlock(&sc->last_mtx); 282 |
270 DPRINTF(("%s: start: cached 0 + %lld, %lld + 0 + %lld\n", 271 gp->name, bp->bio_length, uoff, bp->bio_length)); | 283 DPRINTF(("%s: start: cached 0 + %jd, %jd + 0 + %jd\n", 284 gp->name, (intmax_t)bp->bio_length, (intmax_t)uoff, 285 (intmax_t)bp->bio_length)); |
272 bp->bio_completed = bp->bio_length; 273 g_io_deliver(bp, 0); 274 return; 275 } 276 mtx_unlock(&sc->last_mtx); 277 } 278 279 bp2 = g_clone_bio(bp); 280 if (bp2 == NULL) { 281 g_io_deliver(bp, ENOMEM); 282 return; 283 } 284 bp2->bio_done = g_uzip_done; | 286 bp->bio_completed = bp->bio_length; 287 g_io_deliver(bp, 0); 288 return; 289 } 290 mtx_unlock(&sc->last_mtx); 291 } 292 293 bp2 = g_clone_bio(bp); 294 if (bp2 == NULL) { 295 g_io_deliver(bp, ENOMEM); 296 return; 297 } 298 bp2->bio_done = g_uzip_done; |
285 DPRINTF(("%s: start (%d..%d), %s: %d + %lld, %s: %d + %lld\n", | 299 DPRINTF(("%s: start (%d..%d), %s: %d + %jd, %s: %d + %jd\n", |
286 gp->name, start_blk, end_blk, | 300 gp->name, start_blk, end_blk, |
287 pp->name, pp->sectorsize, pp->mediasize, 288 pp2->name, pp2->sectorsize, pp2->mediasize)); | 301 pp->name, pp->sectorsize, (intmax_t)pp->mediasize, 302 pp2->name, pp2->sectorsize, (intmax_t)pp2->mediasize)); |
289 bsize = pp2->sectorsize; 290 bp2->bio_offset = sc->offsets[start_blk] - sc->offsets[start_blk] % bsize; | 303 bsize = pp2->sectorsize; 304 bp2->bio_offset = sc->offsets[start_blk] - sc->offsets[start_blk] % bsize; |
291 bp2->bio_length = sc->offsets[end_blk] - bp2->bio_offset; 292 bp2->bio_length = (bp2->bio_length + bsize - 1) / bsize * bsize; 293 DPRINTF(("%s: start %lld + %lld -> %lld + %lld -> %lld + %lld\n", | 305 while (1) { 306 bp2->bio_length = sc->offsets[end_blk] - bp2->bio_offset; 307 bp2->bio_length = (bp2->bio_length + bsize - 1) / bsize * bsize; 308 if (bp2->bio_length < MAXPHYS) 309 break; 310 311 end_blk--; 312 DPRINTF(("%s: bio_length (%jd) > MAXPHYS: lowering end_blk " 313 "to %u\n", gp->name, (intmax_t)bp2->bio_length, end_blk)); 314 } 315 DPRINTF(("%s: start %jd + %jd -> %ju + %ju -> %jd + %jd\n", |
294 gp->name, | 316 gp->name, |
295 bp->bio_offset, bp->bio_length, 296 sc->offsets[start_blk], sc->offsets[end_blk] - sc->offsets[start_blk], 297 bp2->bio_offset, bp2->bio_length)); | 317 (intmax_t)bp->bio_offset, (intmax_t)bp->bio_length, 318 (uintmax_t)sc->offsets[start_blk], 319 (uintmax_t)sc->offsets[end_blk] - sc->offsets[start_blk], 320 (intmax_t)bp2->bio_offset, (intmax_t)bp2->bio_length)); |
298 bp2->bio_data = malloc(bp2->bio_length, M_GEOM_UZIP, M_NOWAIT); 299 if (bp2->bio_data == NULL) { 300 g_destroy_bio(bp2); 301 g_io_deliver(bp, ENOMEM); 302 return; 303 } 304 305 g_io_request(bp2, cp); 306 DPRINTF(("%s: start ok\n", gp->name)); 307} 308 309static void 310g_uzip_orphan(struct g_consumer *cp) 311{ 312 struct g_geom *gp; 313 | 321 bp2->bio_data = malloc(bp2->bio_length, M_GEOM_UZIP, M_NOWAIT); 322 if (bp2->bio_data == NULL) { 323 g_destroy_bio(bp2); 324 g_io_deliver(bp, ENOMEM); 325 return; 326 } 327 328 g_io_request(bp2, cp); 329 DPRINTF(("%s: start ok\n", gp->name)); 330} 331 332static void 333g_uzip_orphan(struct g_consumer *cp) 334{ 335 struct g_geom *gp; 336 |
314 g_trace(G_T_TOPOLOGY, "g_uzip_orphan(%p/%s)", cp, cp->provider->name); | 337 g_trace(G_T_TOPOLOGY, "%s(%p/%s)", __func__, cp, cp->provider->name); |
315 g_topology_assert(); 316 317 gp = cp->geom; 318 g_uzip_softc_free(gp->softc, gp); 319 gp->softc = NULL; 320 g_wither_geom(gp, ENXIO); 321} 322 323static int 324g_uzip_access(struct g_provider *pp, int dr, int dw, int de) 325{ 326 struct g_geom *gp; 327 struct g_consumer *cp; 328 329 gp = pp->geom; 330 cp = LIST_FIRST(&gp->consumer); 331 KASSERT (cp != NULL, ("g_uzip_access but no consumer")); 332 333 if (cp->acw + dw > 0) | 338 g_topology_assert(); 339 340 gp = cp->geom; 341 g_uzip_softc_free(gp->softc, gp); 342 gp->softc = NULL; 343 g_wither_geom(gp, ENXIO); 344} 345 346static int 347g_uzip_access(struct g_provider *pp, int dr, int dw, int de) 348{ 349 struct g_geom *gp; 350 struct g_consumer *cp; 351 352 gp = pp->geom; 353 cp = LIST_FIRST(&gp->consumer); 354 KASSERT (cp != NULL, ("g_uzip_access but no consumer")); 355 356 if (cp->acw + dw > 0) |
334 return EROFS; | 357 return (EROFS); |
335 336 return (g_access(cp, dr, dw, de)); 337} 338 339static void 340g_uzip_spoiled(struct g_consumer *cp) 341{ 342 struct g_geom *gp; 343 344 gp = cp->geom; | 358 359 return (g_access(cp, dr, dw, de)); 360} 361 362static void 363g_uzip_spoiled(struct g_consumer *cp) 364{ 365 struct g_geom *gp; 366 367 gp = cp->geom; |
345 g_trace(G_T_TOPOLOGY, "g_uzip_spoiled(%p/%s)", cp, gp->name); | 368 g_trace(G_T_TOPOLOGY, "%s(%p/%s)", __func__, cp, gp->name); |
346 g_topology_assert(); 347 348 g_uzip_softc_free(gp->softc, gp); 349 gp->softc = NULL; 350 g_wither_geom(gp, ENXIO); 351} 352 353static struct g_geom * 354g_uzip_taste(struct g_class *mp, struct g_provider *pp, int flags) 355{ 356 int error; 357 uint32_t i, total_offsets, offsets_read, blk; 358 void *buf; 359 struct cloop_header *header; 360 struct g_consumer *cp; 361 struct g_geom *gp; 362 struct g_provider *pp2; 363 struct g_uzip_softc *sc; 364 | 369 g_topology_assert(); 370 371 g_uzip_softc_free(gp->softc, gp); 372 gp->softc = NULL; 373 g_wither_geom(gp, ENXIO); 374} 375 376static struct g_geom * 377g_uzip_taste(struct g_class *mp, struct g_provider *pp, int flags) 378{ 379 int error; 380 uint32_t i, total_offsets, offsets_read, blk; 381 void *buf; 382 struct cloop_header *header; 383 struct g_consumer *cp; 384 struct g_geom *gp; 385 struct g_provider *pp2; 386 struct g_uzip_softc *sc; 387 |
365 g_trace(G_T_TOPOLOGY, "g_uzip_taste(%s,%s)", mp->name, pp->name); | 388 g_trace(G_T_TOPOLOGY, "%s(%s,%s)", __func__, mp->name, pp->name); |
366 g_topology_assert(); 367 368 /* Skip providers that are already open for writing. */ 369 if (pp->acw > 0) 370 return (NULL); 371 372 buf = NULL; 373 --- 12 unchanged lines hidden (view full) --- 386 return (NULL); 387 } 388 g_topology_unlock(); 389 390 /* 391 * Read cloop header, look for CLOOP magic, perform 392 * other validity checks. 393 */ | 389 g_topology_assert(); 390 391 /* Skip providers that are already open for writing. */ 392 if (pp->acw > 0) 393 return (NULL); 394 395 buf = NULL; 396 --- 12 unchanged lines hidden (view full) --- 409 return (NULL); 410 } 411 g_topology_unlock(); 412 413 /* 414 * Read cloop header, look for CLOOP magic, perform 415 * other validity checks. 416 */ |
394 DPRINTF(("%s: media sectorsize %u, mediasize %lld\n", 395 gp->name, pp->sectorsize, pp->mediasize)); | 417 DPRINTF(("%s: media sectorsize %u, mediasize %jd\n", 418 gp->name, pp->sectorsize, (intmax_t)pp->mediasize)); |
396 buf = g_read_data(cp, 0, pp->sectorsize, NULL); 397 if (buf == NULL) 398 goto err; 399 header = (struct cloop_header *) buf; 400 if (strncmp(header->magic, CLOOP_MAGIC_START, | 419 buf = g_read_data(cp, 0, pp->sectorsize, NULL); 420 if (buf == NULL) 421 goto err; 422 header = (struct cloop_header *) buf; 423 if (strncmp(header->magic, CLOOP_MAGIC_START, |
401 sizeof(CLOOP_MAGIC_START) - 1) != 0) { | 424 sizeof(CLOOP_MAGIC_START) - 1) != 0) { |
402 DPRINTF(("%s: no CLOOP magic\n", gp->name)); 403 goto err; 404 } 405 if (header->magic[0x0b] != 'V' || header->magic[0x0c] < '2') { 406 DPRINTF(("%s: image version too old\n", gp->name)); 407 goto err; 408 } 409 --- 12 unchanged lines hidden (view full) --- 422 if (sc->blksz > MAX_BLKSZ) { 423 printf("%s: block size (%u) should not be larger than %d.\n", 424 gp->name, sc->blksz, MAX_BLKSZ); 425 } 426 total_offsets = sc->nblocks + 1; 427 if (sizeof(struct cloop_header) + 428 total_offsets * sizeof(uint64_t) > pp->mediasize) { 429 printf("%s: media too small for %u blocks\n", | 425 DPRINTF(("%s: no CLOOP magic\n", gp->name)); 426 goto err; 427 } 428 if (header->magic[0x0b] != 'V' || header->magic[0x0c] < '2') { 429 DPRINTF(("%s: image version too old\n", gp->name)); 430 goto err; 431 } 432 --- 12 unchanged lines hidden (view full) --- 445 if (sc->blksz > MAX_BLKSZ) { 446 printf("%s: block size (%u) should not be larger than %d.\n", 447 gp->name, sc->blksz, MAX_BLKSZ); 448 } 449 total_offsets = sc->nblocks + 1; 450 if (sizeof(struct cloop_header) + 451 total_offsets * sizeof(uint64_t) > pp->mediasize) { 452 printf("%s: media too small for %u blocks\n", |
430 gp->name, sc->nblocks); | 453 gp->name, sc->nblocks); |
431 goto err; 432 } 433 sc->offsets = malloc( 434 total_offsets * sizeof(uint64_t), M_GEOM_UZIP, M_WAITOK); 435 offsets_read = MIN(total_offsets, 436 (pp->sectorsize - sizeof(*header)) / sizeof(uint64_t)); 437 for (i = 0; i < offsets_read; i++) 438 sc->offsets[i] = be64toh(((uint64_t *) (header + 1))[i]); --- 12 unchanged lines hidden (view full) --- 451 DPRINTF(("%s: %u offsets read from sector %d\n", 452 gp->name, nread, blk)); 453 for (i = 0; i < nread; i++) { 454 sc->offsets[offsets_read + i] = 455 be64toh(((uint64_t *) buf)[i]); 456 } 457 offsets_read += nread; 458 } | 454 goto err; 455 } 456 sc->offsets = malloc( 457 total_offsets * sizeof(uint64_t), M_GEOM_UZIP, M_WAITOK); 458 offsets_read = MIN(total_offsets, 459 (pp->sectorsize - sizeof(*header)) / sizeof(uint64_t)); 460 for (i = 0; i < offsets_read; i++) 461 sc->offsets[i] = be64toh(((uint64_t *) (header + 1))[i]); --- 12 unchanged lines hidden (view full) --- 474 DPRINTF(("%s: %u offsets read from sector %d\n", 475 gp->name, nread, blk)); 476 for (i = 0; i < nread; i++) { 477 sc->offsets[offsets_read + i] = 478 be64toh(((uint64_t *) buf)[i]); 479 } 480 offsets_read += nread; 481 } |
482 free(buf, M_GEOM); |
|
459 DPRINTF(("%s: done reading offsets\n", gp->name)); 460 mtx_init(&sc->last_mtx, "geom_uzip cache", NULL, MTX_DEF); 461 sc->last_blk = -1; 462 sc->last_buf = malloc(sc->blksz, M_GEOM_UZIP, M_WAITOK); 463 sc->req_total = 0; 464 sc->req_cached = 0; 465 466 g_topology_lock(); 467 pp2 = g_new_providerf(gp, "%s", gp->name); 468 pp2->sectorsize = 512; 469 pp2->mediasize = (off_t)sc->nblocks * sc->blksz; | 483 DPRINTF(("%s: done reading offsets\n", gp->name)); 484 mtx_init(&sc->last_mtx, "geom_uzip cache", NULL, MTX_DEF); 485 sc->last_blk = -1; 486 sc->last_buf = malloc(sc->blksz, M_GEOM_UZIP, M_WAITOK); 487 sc->req_total = 0; 488 sc->req_cached = 0; 489 490 g_topology_lock(); 491 pp2 = g_new_providerf(gp, "%s", gp->name); 492 pp2->sectorsize = 512; 493 pp2->mediasize = (off_t)sc->nblocks * sc->blksz; |
470 pp2->stripesize = pp->stripesize; 471 pp2->stripeoffset = pp->stripeoffset; | 494 pp2->stripesize = pp->stripesize; 495 pp2->stripeoffset = pp->stripeoffset; |
472 g_error_provider(pp2, 0); 473 g_access(cp, -1, 0, 0); 474 | 496 g_error_provider(pp2, 0); 497 g_access(cp, -1, 0, 0); 498 |
475 DPRINTF(("%s: taste ok (%d, %lld), (%d, %d), %x\n", | 499 DPRINTF(("%s: taste ok (%d, %jd), (%d, %d), %x\n", |
476 gp->name, | 500 gp->name, |
477 pp2->sectorsize, pp2->mediasize, | 501 pp2->sectorsize, (intmax_t)pp2->mediasize, |
478 pp2->stripeoffset, pp2->stripesize, pp2->flags)); | 502 pp2->stripeoffset, pp2->stripesize, pp2->flags)); |
479 printf("%s: %u x %u blocks\n", 480 gp->name, sc->nblocks, sc->blksz); | 503 printf("%s: %u x %u blocks\n", gp->name, sc->nblocks, sc->blksz); |
481 return (gp); 482 483err: 484 g_topology_lock(); 485 g_access(cp, -1, 0, 0); 486 if (buf != NULL) 487 free(buf, M_GEOM); 488 if (gp->softc != NULL) { 489 g_uzip_softc_free(gp->softc, NULL); 490 gp->softc = NULL; 491 } 492 g_detach(cp); 493 g_destroy_consumer(cp); 494 g_destroy_geom(gp); | 504 return (gp); 505 506err: 507 g_topology_lock(); 508 g_access(cp, -1, 0, 0); 509 if (buf != NULL) 510 free(buf, M_GEOM); 511 if (gp->softc != NULL) { 512 g_uzip_softc_free(gp->softc, NULL); 513 gp->softc = NULL; 514 } 515 g_detach(cp); 516 g_destroy_consumer(cp); 517 g_destroy_geom(gp); |
518 |
|
495 return (NULL); 496} 497 498static int 499g_uzip_destroy_geom(struct gctl_req *req, struct g_class *mp, struct g_geom *gp) 500{ 501 struct g_provider *pp; 502 | 519 return (NULL); 520} 521 522static int 523g_uzip_destroy_geom(struct gctl_req *req, struct g_class *mp, struct g_geom *gp) 524{ 525 struct g_provider *pp; 526 |
503 g_trace(G_T_TOPOLOGY, "g_uzip_destroy_geom(%s, %s)", mp->name, gp->name); | 527 g_trace(G_T_TOPOLOGY, "%s(%s, %s)", __func__, mp->name, gp->name); |
504 g_topology_assert(); 505 506 if (gp->softc == NULL) { 507 printf("%s(%s): gp->softc == NULL\n", __func__, gp->name); 508 return (ENXIO); 509 } 510 511 KASSERT(gp != NULL, ("NULL geom")); 512 pp = LIST_FIRST(&gp->provider); 513 KASSERT(pp != NULL, ("NULL provider")); 514 if (pp->acr > 0 || pp->acw > 0 || pp->ace > 0) 515 return (EBUSY); 516 517 g_uzip_softc_free(gp->softc, gp); 518 gp->softc = NULL; 519 g_wither_geom(gp, ENXIO); | 528 g_topology_assert(); 529 530 if (gp->softc == NULL) { 531 printf("%s(%s): gp->softc == NULL\n", __func__, gp->name); 532 return (ENXIO); 533 } 534 535 KASSERT(gp != NULL, ("NULL geom")); 536 pp = LIST_FIRST(&gp->provider); 537 KASSERT(pp != NULL, ("NULL provider")); 538 if (pp->acr > 0 || pp->acw > 0 || pp->ace > 0) 539 return (EBUSY); 540 541 g_uzip_softc_free(gp->softc, gp); 542 gp->softc = NULL; 543 g_wither_geom(gp, ENXIO); |
544 |
|
520 return (0); 521} 522 523static struct g_class g_uzip_class = { 524 .name = UZIP_CLASS_NAME, 525 .version = G_VERSION, 526 .taste = g_uzip_taste, 527 .destroy_geom = g_uzip_destroy_geom, 528 529 .start = g_uzip_start, 530 .orphan = g_uzip_orphan, 531 .access = g_uzip_access, 532 .spoiled = g_uzip_spoiled, 533}; 534 535DECLARE_GEOM_CLASS(g_uzip_class, g_uzip); 536MODULE_DEPEND(g_uzip, zlib, 1, 1, 1); | 545 return (0); 546} 547 548static struct g_class g_uzip_class = { 549 .name = UZIP_CLASS_NAME, 550 .version = G_VERSION, 551 .taste = g_uzip_taste, 552 .destroy_geom = g_uzip_destroy_geom, 553 554 .start = g_uzip_start, 555 .orphan = g_uzip_orphan, 556 .access = g_uzip_access, 557 .spoiled = g_uzip_spoiled, 558}; 559 560DECLARE_GEOM_CLASS(g_uzip_class, g_uzip); 561MODULE_DEPEND(g_uzip, zlib, 1, 1, 1); |