udf_allocation.c revision 1.1.2.3
1 1.1.2.3 yamt /* $NetBSD: udf_allocation.c,v 1.1.2.3 2009/05/04 08:13:44 yamt Exp $ */ 2 1.1.2.2 yamt 3 1.1.2.2 yamt /* 4 1.1.2.2 yamt * Copyright (c) 2006, 2008 Reinoud Zandijk 5 1.1.2.2 yamt * All rights reserved. 6 1.1.2.2 yamt * 7 1.1.2.2 yamt * Redistribution and use in source and binary forms, with or without 8 1.1.2.2 yamt * modification, are permitted provided that the following conditions 9 1.1.2.2 yamt * are met: 10 1.1.2.2 yamt * 1. Redistributions of source code must retain the above copyright 11 1.1.2.2 yamt * notice, this list of conditions and the following disclaimer. 12 1.1.2.2 yamt * 2. Redistributions in binary form must reproduce the above copyright 13 1.1.2.2 yamt * notice, this list of conditions and the following disclaimer in the 14 1.1.2.2 yamt * documentation and/or other materials provided with the distribution. 15 1.1.2.2 yamt * 16 1.1.2.2 yamt * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 1.1.2.2 yamt * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 1.1.2.2 yamt * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 1.1.2.2 yamt * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 1.1.2.2 yamt * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 1.1.2.2 yamt * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 1.1.2.2 yamt * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 1.1.2.2 yamt * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 1.1.2.2 yamt * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 1.1.2.2 yamt * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 1.1.2.2 yamt * 27 1.1.2.2 yamt */ 28 1.1.2.2 yamt 29 1.1.2.2 yamt #include <sys/cdefs.h> 30 1.1.2.2 yamt #ifndef lint 31 1.1.2.3 yamt __KERNEL_RCSID(0, "$NetBSD: udf_allocation.c,v 1.1.2.3 2009/05/04 08:13:44 yamt Exp $"); 32 1.1.2.2 yamt #endif /* not lint */ 33 1.1.2.2 yamt 34 1.1.2.2 yamt 35 1.1.2.2 yamt #if defined(_KERNEL_OPT) 36 1.1.2.2 yamt #include "opt_quota.h" 37 1.1.2.2 yamt #include "opt_compat_netbsd.h" 38 1.1.2.2 yamt #endif 39 1.1.2.2 yamt 40 1.1.2.2 yamt /* TODO strip */ 41 1.1.2.2 yamt #include <sys/param.h> 42 1.1.2.2 yamt #include <sys/systm.h> 43 1.1.2.2 yamt #include <sys/sysctl.h> 44 1.1.2.2 yamt #include <sys/namei.h> 45 1.1.2.2 yamt #include <sys/proc.h> 46 1.1.2.2 yamt #include <sys/kernel.h> 47 1.1.2.2 yamt #include <sys/vnode.h> 48 1.1.2.2 yamt #include <miscfs/genfs/genfs_node.h> 49 1.1.2.2 yamt #include <sys/mount.h> 50 1.1.2.2 yamt #include <sys/buf.h> 51 1.1.2.2 yamt #include <sys/file.h> 52 1.1.2.2 yamt #include <sys/device.h> 53 1.1.2.2 yamt #include <sys/disklabel.h> 54 1.1.2.2 yamt #include <sys/ioctl.h> 55 1.1.2.2 yamt #include <sys/malloc.h> 56 1.1.2.2 yamt #include <sys/dirent.h> 57 1.1.2.2 yamt #include <sys/stat.h> 58 1.1.2.2 yamt #include <sys/conf.h> 59 1.1.2.2 yamt #include <sys/kauth.h> 60 1.1.2.2 yamt #include <sys/kthread.h> 61 1.1.2.2 yamt #include <dev/clock_subr.h> 62 1.1.2.2 yamt 63 1.1.2.2 yamt #include <fs/udf/ecma167-udf.h> 64 1.1.2.2 yamt #include <fs/udf/udf_mount.h> 65 1.1.2.2 yamt 66 1.1.2.2 yamt #include "udf.h" 67 1.1.2.2 yamt #include "udf_subr.h" 68 1.1.2.2 yamt #include "udf_bswap.h" 69 1.1.2.2 yamt 70 1.1.2.2 yamt 71 1.1.2.2 yamt #define VTOI(vnode) ((struct udf_node *) vnode->v_data) 72 1.1.2.2 yamt 73 1.1.2.2 yamt static void udf_record_allocation_in_node(struct udf_mount *ump, 74 1.1.2.2 yamt struct buf *buf, uint16_t vpart_num, uint64_t *mapping, 75 1.1.2.2 yamt struct long_ad *node_ad_cpy); 76 1.1.2.2 yamt 77 1.1.2.2 yamt /* 78 1.1.2.2 yamt * IDEA/BUSY: Each udf_node gets its own extentwalker state for all operations; 79 1.1.2.2 yamt * this will hopefully/likely reduce O(nlog(n)) to O(1) for most functionality 80 1.1.2.2 yamt * since actions are most likely sequencial and thus seeking doesn't need 81 1.1.2.2 yamt * searching for the same or adjacent position again. 82 1.1.2.2 yamt */ 83 1.1.2.2 yamt 84 1.1.2.2 yamt /* --------------------------------------------------------------------- */ 85 1.1.2.3 yamt 86 1.1.2.3 yamt #if 0 87 1.1.2.2 yamt #if 1 88 1.1.2.2 yamt static void 89 1.1.2.2 yamt udf_node_dump(struct udf_node *udf_node) { 90 1.1.2.2 yamt struct file_entry *fe; 91 1.1.2.2 yamt struct extfile_entry *efe; 92 1.1.2.2 yamt struct icb_tag *icbtag; 93 1.1.2.3 yamt struct long_ad s_ad; 94 1.1.2.2 yamt uint64_t inflen; 95 1.1.2.3 yamt uint32_t icbflags, addr_type; 96 1.1.2.2 yamt uint32_t len, lb_num; 97 1.1.2.3 yamt uint32_t flags; 98 1.1.2.2 yamt int part_num; 99 1.1.2.3 yamt int lb_size, eof, slot; 100 1.1.2.2 yamt 101 1.1.2.3 yamt if ((udf_verbose & UDF_DEBUG_NODEDUMP) == 0) 102 1.1.2.2 yamt return; 103 1.1.2.2 yamt 104 1.1.2.2 yamt lb_size = udf_rw32(udf_node->ump->logical_vol->lb_size); 105 1.1.2.2 yamt 106 1.1.2.2 yamt fe = udf_node->fe; 107 1.1.2.2 yamt efe = udf_node->efe; 108 1.1.2.2 yamt if (fe) { 109 1.1.2.2 yamt icbtag = &fe->icbtag; 110 1.1.2.2 yamt inflen = udf_rw64(fe->inf_len); 111 1.1.2.2 yamt } else { 112 1.1.2.2 yamt icbtag = &efe->icbtag; 113 1.1.2.2 yamt inflen = udf_rw64(efe->inf_len); 114 1.1.2.2 yamt } 115 1.1.2.2 yamt 116 1.1.2.2 yamt icbflags = udf_rw16(icbtag->flags); 117 1.1.2.2 yamt addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 118 1.1.2.2 yamt 119 1.1.2.3 yamt printf("udf_node_dump %p :\n", udf_node); 120 1.1.2.2 yamt 121 1.1.2.2 yamt if (addr_type == UDF_ICB_INTERN_ALLOC) { 122 1.1.2.3 yamt printf("\tIntern alloc, len = %"PRIu64"\n", inflen); 123 1.1.2.2 yamt return; 124 1.1.2.2 yamt } 125 1.1.2.2 yamt 126 1.1.2.3 yamt printf("\tInflen = %"PRIu64"\n", inflen); 127 1.1.2.3 yamt printf("\t\t"); 128 1.1.2.2 yamt 129 1.1.2.3 yamt slot = 0; 130 1.1.2.3 yamt for (;;) { 131 1.1.2.3 yamt udf_get_adslot(udf_node, slot, &s_ad, &eof); 132 1.1.2.3 yamt if (eof) 133 1.1.2.3 yamt break; 134 1.1.2.3 yamt part_num = udf_rw16(s_ad.loc.part_num); 135 1.1.2.3 yamt lb_num = udf_rw32(s_ad.loc.lb_num); 136 1.1.2.3 yamt len = udf_rw32(s_ad.len); 137 1.1.2.3 yamt flags = UDF_EXT_FLAGS(len); 138 1.1.2.3 yamt len = UDF_EXT_LEN(len); 139 1.1.2.2 yamt 140 1.1.2.2 yamt printf("["); 141 1.1.2.2 yamt if (part_num >= 0) 142 1.1.2.2 yamt printf("part %d, ", part_num); 143 1.1.2.2 yamt printf("lb_num %d, len %d", lb_num, len); 144 1.1.2.2 yamt if (flags) 145 1.1.2.3 yamt printf(", flags %d", flags>>30); 146 1.1.2.2 yamt printf("] "); 147 1.1.2.3 yamt 148 1.1.2.3 yamt if (flags == UDF_EXT_REDIRECT) { 149 1.1.2.3 yamt printf("\n\textent END\n\tallocation extent\n\t\t"); 150 1.1.2.3 yamt } 151 1.1.2.3 yamt 152 1.1.2.3 yamt slot++; 153 1.1.2.2 yamt } 154 1.1.2.3 yamt printf("\n\tl_ad END\n\n"); 155 1.1.2.2 yamt } 156 1.1.2.2 yamt #else 157 1.1.2.2 yamt #define udf_node_dump(a) 158 1.1.2.2 yamt #endif 159 1.1.2.2 yamt 160 1.1.2.3 yamt 161 1.1.2.3 yamt static void 162 1.1.2.3 yamt udf_assert_allocated(struct udf_mount *ump, uint16_t vpart_num, 163 1.1.2.3 yamt uint32_t lb_num, uint32_t num_lb) 164 1.1.2.3 yamt { 165 1.1.2.3 yamt struct udf_bitmap *bitmap; 166 1.1.2.3 yamt struct part_desc *pdesc; 167 1.1.2.3 yamt uint32_t ptov; 168 1.1.2.3 yamt uint32_t bitval; 169 1.1.2.3 yamt uint8_t *bpos; 170 1.1.2.3 yamt int bit; 171 1.1.2.3 yamt int phys_part; 172 1.1.2.3 yamt int ok; 173 1.1.2.3 yamt 174 1.1.2.3 yamt DPRINTF(PARANOIA, ("udf_assert_allocated: check virt lbnum %d " 175 1.1.2.3 yamt "part %d + %d sect\n", lb_num, vpart_num, num_lb)); 176 1.1.2.3 yamt 177 1.1.2.3 yamt /* get partition backing up this vpart_num */ 178 1.1.2.3 yamt pdesc = ump->partitions[ump->vtop[vpart_num]]; 179 1.1.2.3 yamt 180 1.1.2.3 yamt switch (ump->vtop_tp[vpart_num]) { 181 1.1.2.3 yamt case UDF_VTOP_TYPE_PHYS : 182 1.1.2.3 yamt case UDF_VTOP_TYPE_SPARABLE : 183 1.1.2.3 yamt /* free space to freed or unallocated space bitmap */ 184 1.1.2.3 yamt ptov = udf_rw32(pdesc->start_loc); 185 1.1.2.3 yamt phys_part = ump->vtop[vpart_num]; 186 1.1.2.3 yamt 187 1.1.2.3 yamt /* use unallocated bitmap */ 188 1.1.2.3 yamt bitmap = &ump->part_unalloc_bits[phys_part]; 189 1.1.2.3 yamt 190 1.1.2.3 yamt /* if no bitmaps are defined, bail out */ 191 1.1.2.3 yamt if (bitmap->bits == NULL) 192 1.1.2.3 yamt break; 193 1.1.2.3 yamt 194 1.1.2.3 yamt /* check bits */ 195 1.1.2.3 yamt KASSERT(bitmap->bits); 196 1.1.2.3 yamt ok = 1; 197 1.1.2.3 yamt bpos = bitmap->bits + lb_num/8; 198 1.1.2.3 yamt bit = lb_num % 8; 199 1.1.2.3 yamt while (num_lb > 0) { 200 1.1.2.3 yamt bitval = (1 << bit); 201 1.1.2.3 yamt DPRINTF(PARANOIA, ("XXX : check %d, %p, bit %d\n", 202 1.1.2.3 yamt lb_num, bpos, bit)); 203 1.1.2.3 yamt KASSERT(bitmap->bits + lb_num/8 == bpos); 204 1.1.2.3 yamt if (*bpos & bitval) { 205 1.1.2.3 yamt printf("\tlb_num %d is NOT marked busy\n", 206 1.1.2.3 yamt lb_num); 207 1.1.2.3 yamt ok = 0; 208 1.1.2.3 yamt } 209 1.1.2.3 yamt lb_num++; num_lb--; 210 1.1.2.3 yamt bit = (bit + 1) % 8; 211 1.1.2.3 yamt if (bit == 0) 212 1.1.2.3 yamt bpos++; 213 1.1.2.3 yamt } 214 1.1.2.3 yamt if (!ok) { 215 1.1.2.3 yamt /* KASSERT(0); */ 216 1.1.2.3 yamt } 217 1.1.2.3 yamt 218 1.1.2.3 yamt break; 219 1.1.2.3 yamt case UDF_VTOP_TYPE_VIRT : 220 1.1.2.3 yamt /* TODO check space */ 221 1.1.2.3 yamt KASSERT(num_lb == 1); 222 1.1.2.3 yamt break; 223 1.1.2.3 yamt case UDF_VTOP_TYPE_META : 224 1.1.2.3 yamt /* TODO check space in the metadata bitmap */ 225 1.1.2.3 yamt default: 226 1.1.2.3 yamt /* not implemented */ 227 1.1.2.3 yamt break; 228 1.1.2.3 yamt } 229 1.1.2.3 yamt } 230 1.1.2.3 yamt 231 1.1.2.3 yamt 232 1.1.2.2 yamt static void 233 1.1.2.2 yamt udf_node_sanity_check(struct udf_node *udf_node, 234 1.1.2.3 yamt uint64_t *cnt_inflen, uint64_t *cnt_logblksrec) 235 1.1.2.3 yamt { 236 1.1.2.3 yamt union dscrptr *dscr; 237 1.1.2.2 yamt struct file_entry *fe; 238 1.1.2.2 yamt struct extfile_entry *efe; 239 1.1.2.2 yamt struct icb_tag *icbtag; 240 1.1.2.3 yamt struct long_ad s_ad; 241 1.1.2.2 yamt uint64_t inflen, logblksrec; 242 1.1.2.3 yamt uint32_t icbflags, addr_type; 243 1.1.2.3 yamt uint32_t len, lb_num, l_ea, l_ad, max_l_ad; 244 1.1.2.3 yamt uint16_t part_num; 245 1.1.2.3 yamt uint8_t *data_pos; 246 1.1.2.3 yamt int dscr_size, lb_size, flags, whole_lb; 247 1.1.2.3 yamt int i, slot, eof; 248 1.1.2.3 yamt 249 1.1.2.3 yamt // KASSERT(mutex_owned(&udf_node->ump->allocate_mutex)); 250 1.1.2.2 yamt 251 1.1.2.3 yamt if (1) 252 1.1.2.3 yamt udf_node_dump(udf_node); 253 1.1.2.2 yamt 254 1.1.2.2 yamt lb_size = udf_rw32(udf_node->ump->logical_vol->lb_size); 255 1.1.2.2 yamt 256 1.1.2.2 yamt fe = udf_node->fe; 257 1.1.2.2 yamt efe = udf_node->efe; 258 1.1.2.2 yamt if (fe) { 259 1.1.2.3 yamt dscr = (union dscrptr *) fe; 260 1.1.2.3 yamt icbtag = &fe->icbtag; 261 1.1.2.3 yamt inflen = udf_rw64(fe->inf_len); 262 1.1.2.2 yamt dscr_size = sizeof(struct file_entry) -1; 263 1.1.2.3 yamt logblksrec = udf_rw64(fe->logblks_rec); 264 1.1.2.2 yamt l_ad = udf_rw32(fe->l_ad); 265 1.1.2.3 yamt l_ea = udf_rw32(fe->l_ea); 266 1.1.2.2 yamt } else { 267 1.1.2.3 yamt dscr = (union dscrptr *) efe; 268 1.1.2.3 yamt icbtag = &efe->icbtag; 269 1.1.2.3 yamt inflen = udf_rw64(efe->inf_len); 270 1.1.2.2 yamt dscr_size = sizeof(struct extfile_entry) -1; 271 1.1.2.3 yamt logblksrec = udf_rw64(efe->logblks_rec); 272 1.1.2.2 yamt l_ad = udf_rw32(efe->l_ad); 273 1.1.2.3 yamt l_ea = udf_rw32(efe->l_ea); 274 1.1.2.2 yamt } 275 1.1.2.3 yamt data_pos = (uint8_t *) dscr + dscr_size + l_ea; 276 1.1.2.3 yamt max_l_ad = lb_size - dscr_size - l_ea; 277 1.1.2.2 yamt icbflags = udf_rw16(icbtag->flags); 278 1.1.2.2 yamt addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 279 1.1.2.2 yamt 280 1.1.2.3 yamt /* check if tail is zero */ 281 1.1.2.3 yamt DPRINTF(PARANOIA, ("Sanity check blank tail\n")); 282 1.1.2.3 yamt for (i = l_ad; i < max_l_ad; i++) { 283 1.1.2.3 yamt if (data_pos[i] != 0) 284 1.1.2.3 yamt printf( "sanity_check: violation: node byte %d " 285 1.1.2.3 yamt "has value %d\n", i, data_pos[i]); 286 1.1.2.3 yamt } 287 1.1.2.3 yamt 288 1.1.2.2 yamt /* reset counters */ 289 1.1.2.2 yamt *cnt_inflen = 0; 290 1.1.2.2 yamt *cnt_logblksrec = 0; 291 1.1.2.2 yamt 292 1.1.2.2 yamt if (addr_type == UDF_ICB_INTERN_ALLOC) { 293 1.1.2.2 yamt KASSERT(l_ad <= max_l_ad); 294 1.1.2.2 yamt KASSERT(l_ad == inflen); 295 1.1.2.2 yamt *cnt_inflen = inflen; 296 1.1.2.2 yamt return; 297 1.1.2.2 yamt } 298 1.1.2.2 yamt 299 1.1.2.2 yamt /* start counting */ 300 1.1.2.2 yamt whole_lb = 1; 301 1.1.2.3 yamt slot = 0; 302 1.1.2.3 yamt for (;;) { 303 1.1.2.3 yamt udf_get_adslot(udf_node, slot, &s_ad, &eof); 304 1.1.2.3 yamt if (eof) 305 1.1.2.3 yamt break; 306 1.1.2.2 yamt KASSERT(whole_lb == 1); 307 1.1.2.3 yamt 308 1.1.2.3 yamt part_num = udf_rw16(s_ad.loc.part_num); 309 1.1.2.3 yamt lb_num = udf_rw32(s_ad.loc.lb_num); 310 1.1.2.3 yamt len = udf_rw32(s_ad.len); 311 1.1.2.3 yamt flags = UDF_EXT_FLAGS(len); 312 1.1.2.3 yamt len = UDF_EXT_LEN(len); 313 1.1.2.3 yamt 314 1.1.2.3 yamt if (flags != UDF_EXT_REDIRECT) { 315 1.1.2.3 yamt *cnt_inflen += len; 316 1.1.2.3 yamt if (flags == UDF_EXT_ALLOCATED) { 317 1.1.2.3 yamt *cnt_logblksrec += (len + lb_size -1) / lb_size; 318 1.1.2.3 yamt } 319 1.1.2.2 yamt } else { 320 1.1.2.3 yamt KASSERT(len == lb_size); 321 1.1.2.2 yamt } 322 1.1.2.3 yamt /* check allocation */ 323 1.1.2.3 yamt if (flags == UDF_EXT_ALLOCATED) 324 1.1.2.3 yamt udf_assert_allocated(udf_node->ump, part_num, lb_num, 325 1.1.2.3 yamt (len + lb_size - 1) / lb_size); 326 1.1.2.3 yamt 327 1.1.2.3 yamt /* check whole lb */ 328 1.1.2.2 yamt whole_lb = ((len % lb_size) == 0); 329 1.1.2.3 yamt 330 1.1.2.3 yamt slot++; 331 1.1.2.2 yamt } 332 1.1.2.2 yamt /* rest should be zero (ad_off > l_ad < max_l_ad - adlen) */ 333 1.1.2.2 yamt 334 1.1.2.2 yamt KASSERT(*cnt_inflen == inflen); 335 1.1.2.2 yamt KASSERT(*cnt_logblksrec == logblksrec); 336 1.1.2.2 yamt 337 1.1.2.3 yamt // KASSERT(mutex_owned(&udf_node->ump->allocate_mutex)); 338 1.1.2.2 yamt } 339 1.1.2.2 yamt #else 340 1.1.2.3 yamt static void 341 1.1.2.3 yamt udf_node_sanity_check(struct udf_node *udf_node, 342 1.1.2.3 yamt uint64_t *cnt_inflen, uint64_t *cnt_logblksrec) { 343 1.1.2.3 yamt struct file_entry *fe; 344 1.1.2.3 yamt struct extfile_entry *efe; 345 1.1.2.3 yamt struct icb_tag *icbtag; 346 1.1.2.3 yamt uint64_t inflen, logblksrec; 347 1.1.2.3 yamt int dscr_size, lb_size; 348 1.1.2.3 yamt 349 1.1.2.3 yamt lb_size = udf_rw32(udf_node->ump->logical_vol->lb_size); 350 1.1.2.3 yamt 351 1.1.2.3 yamt fe = udf_node->fe; 352 1.1.2.3 yamt efe = udf_node->efe; 353 1.1.2.3 yamt if (fe) { 354 1.1.2.3 yamt icbtag = &fe->icbtag; 355 1.1.2.3 yamt inflen = udf_rw64(fe->inf_len); 356 1.1.2.3 yamt dscr_size = sizeof(struct file_entry) -1; 357 1.1.2.3 yamt logblksrec = udf_rw64(fe->logblks_rec); 358 1.1.2.3 yamt } else { 359 1.1.2.3 yamt icbtag = &efe->icbtag; 360 1.1.2.3 yamt inflen = udf_rw64(efe->inf_len); 361 1.1.2.3 yamt dscr_size = sizeof(struct extfile_entry) -1; 362 1.1.2.3 yamt logblksrec = udf_rw64(efe->logblks_rec); 363 1.1.2.3 yamt } 364 1.1.2.3 yamt *cnt_logblksrec = logblksrec; 365 1.1.2.3 yamt *cnt_inflen = inflen; 366 1.1.2.3 yamt } 367 1.1.2.2 yamt #endif 368 1.1.2.2 yamt 369 1.1.2.2 yamt /* --------------------------------------------------------------------- */ 370 1.1.2.2 yamt 371 1.1.2.2 yamt int 372 1.1.2.2 yamt udf_translate_vtop(struct udf_mount *ump, struct long_ad *icb_loc, 373 1.1.2.2 yamt uint32_t *lb_numres, uint32_t *extres) 374 1.1.2.2 yamt { 375 1.1.2.2 yamt struct part_desc *pdesc; 376 1.1.2.2 yamt struct spare_map_entry *sme; 377 1.1.2.2 yamt struct long_ad s_icb_loc; 378 1.1.2.2 yamt uint64_t foffset, end_foffset; 379 1.1.2.2 yamt uint32_t lb_size, len; 380 1.1.2.2 yamt uint32_t lb_num, lb_rel, lb_packet; 381 1.1.2.2 yamt uint32_t udf_rw32_lbmap, ext_offset; 382 1.1.2.2 yamt uint16_t vpart; 383 1.1.2.2 yamt int rel, part, error, eof, slot, flags; 384 1.1.2.2 yamt 385 1.1.2.2 yamt assert(ump && icb_loc && lb_numres); 386 1.1.2.2 yamt 387 1.1.2.2 yamt vpart = udf_rw16(icb_loc->loc.part_num); 388 1.1.2.2 yamt lb_num = udf_rw32(icb_loc->loc.lb_num); 389 1.1.2.2 yamt if (vpart > UDF_VTOP_RAWPART) 390 1.1.2.2 yamt return EINVAL; 391 1.1.2.2 yamt 392 1.1.2.2 yamt translate_again: 393 1.1.2.2 yamt part = ump->vtop[vpart]; 394 1.1.2.2 yamt pdesc = ump->partitions[part]; 395 1.1.2.2 yamt 396 1.1.2.2 yamt switch (ump->vtop_tp[vpart]) { 397 1.1.2.2 yamt case UDF_VTOP_TYPE_RAW : 398 1.1.2.2 yamt /* 1:1 to the end of the device */ 399 1.1.2.2 yamt *lb_numres = lb_num; 400 1.1.2.2 yamt *extres = INT_MAX; 401 1.1.2.2 yamt return 0; 402 1.1.2.2 yamt case UDF_VTOP_TYPE_PHYS : 403 1.1.2.2 yamt /* transform into its disc logical block */ 404 1.1.2.2 yamt if (lb_num > udf_rw32(pdesc->part_len)) 405 1.1.2.2 yamt return EINVAL; 406 1.1.2.2 yamt *lb_numres = lb_num + udf_rw32(pdesc->start_loc); 407 1.1.2.2 yamt 408 1.1.2.2 yamt /* extent from here to the end of the partition */ 409 1.1.2.2 yamt *extres = udf_rw32(pdesc->part_len) - lb_num; 410 1.1.2.2 yamt return 0; 411 1.1.2.2 yamt case UDF_VTOP_TYPE_VIRT : 412 1.1.2.2 yamt /* only maps one logical block, lookup in VAT */ 413 1.1.2.2 yamt if (lb_num >= ump->vat_entries) /* XXX > or >= ? */ 414 1.1.2.2 yamt return EINVAL; 415 1.1.2.2 yamt 416 1.1.2.2 yamt /* lookup in virtual allocation table file */ 417 1.1.2.2 yamt mutex_enter(&ump->allocate_mutex); 418 1.1.2.2 yamt error = udf_vat_read(ump->vat_node, 419 1.1.2.2 yamt (uint8_t *) &udf_rw32_lbmap, 4, 420 1.1.2.2 yamt ump->vat_offset + lb_num * 4); 421 1.1.2.2 yamt mutex_exit(&ump->allocate_mutex); 422 1.1.2.2 yamt 423 1.1.2.2 yamt if (error) 424 1.1.2.2 yamt return error; 425 1.1.2.2 yamt 426 1.1.2.2 yamt lb_num = udf_rw32(udf_rw32_lbmap); 427 1.1.2.2 yamt 428 1.1.2.2 yamt /* transform into its disc logical block */ 429 1.1.2.2 yamt if (lb_num > udf_rw32(pdesc->part_len)) 430 1.1.2.2 yamt return EINVAL; 431 1.1.2.2 yamt *lb_numres = lb_num + udf_rw32(pdesc->start_loc); 432 1.1.2.2 yamt 433 1.1.2.2 yamt /* just one logical block */ 434 1.1.2.2 yamt *extres = 1; 435 1.1.2.2 yamt return 0; 436 1.1.2.2 yamt case UDF_VTOP_TYPE_SPARABLE : 437 1.1.2.2 yamt /* check if the packet containing the lb_num is remapped */ 438 1.1.2.2 yamt lb_packet = lb_num / ump->sparable_packet_size; 439 1.1.2.2 yamt lb_rel = lb_num % ump->sparable_packet_size; 440 1.1.2.2 yamt 441 1.1.2.2 yamt for (rel = 0; rel < udf_rw16(ump->sparing_table->rt_l); rel++) { 442 1.1.2.2 yamt sme = &ump->sparing_table->entries[rel]; 443 1.1.2.2 yamt if (lb_packet == udf_rw32(sme->org)) { 444 1.1.2.2 yamt /* NOTE maps to absolute disc logical block! */ 445 1.1.2.2 yamt *lb_numres = udf_rw32(sme->map) + lb_rel; 446 1.1.2.2 yamt *extres = ump->sparable_packet_size - lb_rel; 447 1.1.2.2 yamt return 0; 448 1.1.2.2 yamt } 449 1.1.2.2 yamt } 450 1.1.2.2 yamt 451 1.1.2.2 yamt /* transform into its disc logical block */ 452 1.1.2.2 yamt if (lb_num > udf_rw32(pdesc->part_len)) 453 1.1.2.2 yamt return EINVAL; 454 1.1.2.2 yamt *lb_numres = lb_num + udf_rw32(pdesc->start_loc); 455 1.1.2.2 yamt 456 1.1.2.2 yamt /* rest of block */ 457 1.1.2.2 yamt *extres = ump->sparable_packet_size - lb_rel; 458 1.1.2.2 yamt return 0; 459 1.1.2.2 yamt case UDF_VTOP_TYPE_META : 460 1.1.2.2 yamt /* we have to look into the file's allocation descriptors */ 461 1.1.2.2 yamt 462 1.1.2.2 yamt /* use metadatafile allocation mutex */ 463 1.1.2.2 yamt lb_size = udf_rw32(ump->logical_vol->lb_size); 464 1.1.2.2 yamt 465 1.1.2.2 yamt UDF_LOCK_NODE(ump->metadata_node, 0); 466 1.1.2.2 yamt 467 1.1.2.2 yamt /* get first overlapping extent */ 468 1.1.2.2 yamt foffset = 0; 469 1.1.2.2 yamt slot = 0; 470 1.1.2.2 yamt for (;;) { 471 1.1.2.2 yamt udf_get_adslot(ump->metadata_node, 472 1.1.2.2 yamt slot, &s_icb_loc, &eof); 473 1.1.2.3 yamt DPRINTF(ADWLK, ("slot %d, eof = %d, flags = %d, " 474 1.1.2.3 yamt "len = %d, lb_num = %d, part = %d\n", 475 1.1.2.3 yamt slot, eof, 476 1.1.2.3 yamt UDF_EXT_FLAGS(udf_rw32(s_icb_loc.len)), 477 1.1.2.3 yamt UDF_EXT_LEN(udf_rw32(s_icb_loc.len)), 478 1.1.2.3 yamt udf_rw32(s_icb_loc.loc.lb_num), 479 1.1.2.3 yamt udf_rw16(s_icb_loc.loc.part_num))); 480 1.1.2.2 yamt if (eof) { 481 1.1.2.2 yamt DPRINTF(TRANSLATE, 482 1.1.2.2 yamt ("Meta partition translation " 483 1.1.2.2 yamt "failed: can't seek location\n")); 484 1.1.2.2 yamt UDF_UNLOCK_NODE(ump->metadata_node, 0); 485 1.1.2.2 yamt return EINVAL; 486 1.1.2.2 yamt } 487 1.1.2.2 yamt len = udf_rw32(s_icb_loc.len); 488 1.1.2.2 yamt flags = UDF_EXT_FLAGS(len); 489 1.1.2.2 yamt len = UDF_EXT_LEN(len); 490 1.1.2.2 yamt 491 1.1.2.3 yamt if (flags == UDF_EXT_REDIRECT) { 492 1.1.2.3 yamt slot++; 493 1.1.2.3 yamt continue; 494 1.1.2.3 yamt } 495 1.1.2.3 yamt 496 1.1.2.2 yamt end_foffset = foffset + len; 497 1.1.2.2 yamt 498 1.1.2.2 yamt if (end_foffset > lb_num * lb_size) 499 1.1.2.2 yamt break; /* found */ 500 1.1.2.3 yamt foffset = end_foffset; 501 1.1.2.2 yamt slot++; 502 1.1.2.2 yamt } 503 1.1.2.2 yamt /* found overlapping slot */ 504 1.1.2.2 yamt ext_offset = lb_num * lb_size - foffset; 505 1.1.2.2 yamt 506 1.1.2.2 yamt /* process extent offset */ 507 1.1.2.2 yamt lb_num = udf_rw32(s_icb_loc.loc.lb_num); 508 1.1.2.2 yamt vpart = udf_rw16(s_icb_loc.loc.part_num); 509 1.1.2.2 yamt lb_num += (ext_offset + lb_size -1) / lb_size; 510 1.1.2.2 yamt ext_offset = 0; 511 1.1.2.2 yamt 512 1.1.2.2 yamt UDF_UNLOCK_NODE(ump->metadata_node, 0); 513 1.1.2.2 yamt if (flags != UDF_EXT_ALLOCATED) { 514 1.1.2.2 yamt DPRINTF(TRANSLATE, ("Metadata partition translation " 515 1.1.2.2 yamt "failed: not allocated\n")); 516 1.1.2.2 yamt return EINVAL; 517 1.1.2.2 yamt } 518 1.1.2.2 yamt 519 1.1.2.2 yamt /* 520 1.1.2.2 yamt * vpart and lb_num are updated, translate again since we 521 1.1.2.2 yamt * might be mapped on sparable media 522 1.1.2.2 yamt */ 523 1.1.2.2 yamt goto translate_again; 524 1.1.2.2 yamt default: 525 1.1.2.2 yamt printf("UDF vtop translation scheme %d unimplemented yet\n", 526 1.1.2.2 yamt ump->vtop_tp[vpart]); 527 1.1.2.2 yamt } 528 1.1.2.2 yamt 529 1.1.2.2 yamt return EINVAL; 530 1.1.2.2 yamt } 531 1.1.2.2 yamt 532 1.1.2.3 yamt 533 1.1.2.3 yamt /* XXX provisional primitive braindead version */ 534 1.1.2.3 yamt /* TODO use ext_res */ 535 1.1.2.3 yamt void 536 1.1.2.3 yamt udf_translate_vtop_list(struct udf_mount *ump, uint32_t sectors, 537 1.1.2.3 yamt uint16_t vpart_num, uint64_t *lmapping, uint64_t *pmapping) 538 1.1.2.3 yamt { 539 1.1.2.3 yamt struct long_ad loc; 540 1.1.2.3 yamt uint32_t lb_numres, ext_res; 541 1.1.2.3 yamt int sector; 542 1.1.2.3 yamt 543 1.1.2.3 yamt for (sector = 0; sector < sectors; sector++) { 544 1.1.2.3 yamt memset(&loc, 0, sizeof(struct long_ad)); 545 1.1.2.3 yamt loc.loc.part_num = udf_rw16(vpart_num); 546 1.1.2.3 yamt loc.loc.lb_num = udf_rw32(*lmapping); 547 1.1.2.3 yamt udf_translate_vtop(ump, &loc, &lb_numres, &ext_res); 548 1.1.2.3 yamt *pmapping = lb_numres; 549 1.1.2.3 yamt lmapping++; pmapping++; 550 1.1.2.3 yamt } 551 1.1.2.3 yamt } 552 1.1.2.3 yamt 553 1.1.2.3 yamt 554 1.1.2.2 yamt /* --------------------------------------------------------------------- */ 555 1.1.2.2 yamt 556 1.1.2.2 yamt /* 557 1.1.2.2 yamt * Translate an extent (in logical_blocks) into logical block numbers; used 558 1.1.2.2 yamt * for read and write operations. DOESNT't check extents. 559 1.1.2.2 yamt */ 560 1.1.2.2 yamt 561 1.1.2.2 yamt int 562 1.1.2.2 yamt udf_translate_file_extent(struct udf_node *udf_node, 563 1.1.2.2 yamt uint32_t from, uint32_t num_lb, 564 1.1.2.2 yamt uint64_t *map) 565 1.1.2.2 yamt { 566 1.1.2.2 yamt struct udf_mount *ump; 567 1.1.2.2 yamt struct icb_tag *icbtag; 568 1.1.2.2 yamt struct long_ad t_ad, s_ad; 569 1.1.2.2 yamt uint64_t transsec; 570 1.1.2.2 yamt uint64_t foffset, end_foffset; 571 1.1.2.2 yamt uint32_t transsec32; 572 1.1.2.2 yamt uint32_t lb_size; 573 1.1.2.2 yamt uint32_t ext_offset; 574 1.1.2.2 yamt uint32_t lb_num, len; 575 1.1.2.2 yamt uint32_t overlap, translen; 576 1.1.2.2 yamt uint16_t vpart_num; 577 1.1.2.2 yamt int eof, error, flags; 578 1.1.2.2 yamt int slot, addr_type, icbflags; 579 1.1.2.2 yamt 580 1.1.2.2 yamt if (!udf_node) 581 1.1.2.2 yamt return ENOENT; 582 1.1.2.2 yamt 583 1.1.2.2 yamt KASSERT(num_lb > 0); 584 1.1.2.2 yamt 585 1.1.2.2 yamt UDF_LOCK_NODE(udf_node, 0); 586 1.1.2.2 yamt 587 1.1.2.2 yamt /* initialise derivative vars */ 588 1.1.2.2 yamt ump = udf_node->ump; 589 1.1.2.2 yamt lb_size = udf_rw32(ump->logical_vol->lb_size); 590 1.1.2.2 yamt 591 1.1.2.2 yamt if (udf_node->fe) { 592 1.1.2.2 yamt icbtag = &udf_node->fe->icbtag; 593 1.1.2.2 yamt } else { 594 1.1.2.2 yamt icbtag = &udf_node->efe->icbtag; 595 1.1.2.2 yamt } 596 1.1.2.2 yamt icbflags = udf_rw16(icbtag->flags); 597 1.1.2.2 yamt addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 598 1.1.2.2 yamt 599 1.1.2.2 yamt /* do the work */ 600 1.1.2.2 yamt if (addr_type == UDF_ICB_INTERN_ALLOC) { 601 1.1.2.2 yamt *map = UDF_TRANS_INTERN; 602 1.1.2.2 yamt UDF_UNLOCK_NODE(udf_node, 0); 603 1.1.2.2 yamt return 0; 604 1.1.2.2 yamt } 605 1.1.2.2 yamt 606 1.1.2.2 yamt /* find first overlapping extent */ 607 1.1.2.2 yamt foffset = 0; 608 1.1.2.2 yamt slot = 0; 609 1.1.2.2 yamt for (;;) { 610 1.1.2.2 yamt udf_get_adslot(udf_node, slot, &s_ad, &eof); 611 1.1.2.3 yamt DPRINTF(ADWLK, ("slot %d, eof = %d, flags = %d, len = %d, " 612 1.1.2.3 yamt "lb_num = %d, part = %d\n", slot, eof, 613 1.1.2.3 yamt UDF_EXT_FLAGS(udf_rw32(s_ad.len)), 614 1.1.2.3 yamt UDF_EXT_LEN(udf_rw32(s_ad.len)), 615 1.1.2.3 yamt udf_rw32(s_ad.loc.lb_num), 616 1.1.2.3 yamt udf_rw16(s_ad.loc.part_num))); 617 1.1.2.2 yamt if (eof) { 618 1.1.2.2 yamt DPRINTF(TRANSLATE, 619 1.1.2.2 yamt ("Translate file extent " 620 1.1.2.2 yamt "failed: can't seek location\n")); 621 1.1.2.2 yamt UDF_UNLOCK_NODE(udf_node, 0); 622 1.1.2.2 yamt return EINVAL; 623 1.1.2.2 yamt } 624 1.1.2.2 yamt len = udf_rw32(s_ad.len); 625 1.1.2.2 yamt flags = UDF_EXT_FLAGS(len); 626 1.1.2.2 yamt len = UDF_EXT_LEN(len); 627 1.1.2.2 yamt lb_num = udf_rw32(s_ad.loc.lb_num); 628 1.1.2.2 yamt 629 1.1.2.2 yamt if (flags == UDF_EXT_REDIRECT) { 630 1.1.2.2 yamt slot++; 631 1.1.2.2 yamt continue; 632 1.1.2.2 yamt } 633 1.1.2.2 yamt 634 1.1.2.2 yamt end_foffset = foffset + len; 635 1.1.2.2 yamt 636 1.1.2.2 yamt if (end_foffset > from * lb_size) 637 1.1.2.2 yamt break; /* found */ 638 1.1.2.2 yamt foffset = end_foffset; 639 1.1.2.2 yamt slot++; 640 1.1.2.2 yamt } 641 1.1.2.2 yamt /* found overlapping slot */ 642 1.1.2.2 yamt ext_offset = from * lb_size - foffset; 643 1.1.2.2 yamt 644 1.1.2.2 yamt for (;;) { 645 1.1.2.2 yamt udf_get_adslot(udf_node, slot, &s_ad, &eof); 646 1.1.2.3 yamt DPRINTF(ADWLK, ("slot %d, eof = %d, flags = %d, len = %d, " 647 1.1.2.3 yamt "lb_num = %d, part = %d\n", slot, eof, 648 1.1.2.3 yamt UDF_EXT_FLAGS(udf_rw32(s_ad.len)), 649 1.1.2.3 yamt UDF_EXT_LEN(udf_rw32(s_ad.len)), 650 1.1.2.3 yamt udf_rw32(s_ad.loc.lb_num), 651 1.1.2.3 yamt udf_rw16(s_ad.loc.part_num))); 652 1.1.2.2 yamt if (eof) { 653 1.1.2.2 yamt DPRINTF(TRANSLATE, 654 1.1.2.2 yamt ("Translate file extent " 655 1.1.2.2 yamt "failed: past eof\n")); 656 1.1.2.2 yamt UDF_UNLOCK_NODE(udf_node, 0); 657 1.1.2.2 yamt return EINVAL; 658 1.1.2.2 yamt } 659 1.1.2.2 yamt 660 1.1.2.2 yamt len = udf_rw32(s_ad.len); 661 1.1.2.2 yamt flags = UDF_EXT_FLAGS(len); 662 1.1.2.2 yamt len = UDF_EXT_LEN(len); 663 1.1.2.2 yamt 664 1.1.2.2 yamt lb_num = udf_rw32(s_ad.loc.lb_num); 665 1.1.2.2 yamt vpart_num = udf_rw16(s_ad.loc.part_num); 666 1.1.2.2 yamt 667 1.1.2.2 yamt end_foffset = foffset + len; 668 1.1.2.2 yamt 669 1.1.2.2 yamt /* process extent, don't forget to advance on ext_offset! */ 670 1.1.2.2 yamt lb_num += (ext_offset + lb_size -1) / lb_size; 671 1.1.2.2 yamt overlap = (len - ext_offset + lb_size -1) / lb_size; 672 1.1.2.2 yamt ext_offset = 0; 673 1.1.2.2 yamt 674 1.1.2.2 yamt /* 675 1.1.2.2 yamt * note that the while(){} is nessisary for the extent that 676 1.1.2.2 yamt * the udf_translate_vtop() returns doens't have to span the 677 1.1.2.2 yamt * whole extent. 678 1.1.2.2 yamt */ 679 1.1.2.2 yamt 680 1.1.2.2 yamt overlap = MIN(overlap, num_lb); 681 1.1.2.3 yamt while (overlap && (flags != UDF_EXT_REDIRECT)) { 682 1.1.2.2 yamt switch (flags) { 683 1.1.2.2 yamt case UDF_EXT_FREE : 684 1.1.2.2 yamt case UDF_EXT_ALLOCATED_BUT_NOT_USED : 685 1.1.2.2 yamt transsec = UDF_TRANS_ZERO; 686 1.1.2.2 yamt translen = overlap; 687 1.1.2.2 yamt while (overlap && num_lb && translen) { 688 1.1.2.2 yamt *map++ = transsec; 689 1.1.2.2 yamt lb_num++; 690 1.1.2.2 yamt overlap--; num_lb--; translen--; 691 1.1.2.2 yamt } 692 1.1.2.2 yamt break; 693 1.1.2.2 yamt case UDF_EXT_ALLOCATED : 694 1.1.2.2 yamt t_ad.loc.lb_num = udf_rw32(lb_num); 695 1.1.2.2 yamt t_ad.loc.part_num = udf_rw16(vpart_num); 696 1.1.2.2 yamt error = udf_translate_vtop(ump, 697 1.1.2.2 yamt &t_ad, &transsec32, &translen); 698 1.1.2.2 yamt transsec = transsec32; 699 1.1.2.2 yamt if (error) { 700 1.1.2.2 yamt UDF_UNLOCK_NODE(udf_node, 0); 701 1.1.2.2 yamt return error; 702 1.1.2.2 yamt } 703 1.1.2.2 yamt while (overlap && num_lb && translen) { 704 1.1.2.2 yamt *map++ = transsec; 705 1.1.2.2 yamt lb_num++; transsec++; 706 1.1.2.2 yamt overlap--; num_lb--; translen--; 707 1.1.2.2 yamt } 708 1.1.2.2 yamt break; 709 1.1.2.3 yamt default: 710 1.1.2.3 yamt DPRINTF(TRANSLATE, 711 1.1.2.3 yamt ("Translate file extent " 712 1.1.2.3 yamt "failed: bad flags %x\n", flags)); 713 1.1.2.3 yamt UDF_UNLOCK_NODE(udf_node, 0); 714 1.1.2.3 yamt return EINVAL; 715 1.1.2.2 yamt } 716 1.1.2.2 yamt } 717 1.1.2.2 yamt if (num_lb == 0) 718 1.1.2.2 yamt break; 719 1.1.2.2 yamt 720 1.1.2.2 yamt if (flags != UDF_EXT_REDIRECT) 721 1.1.2.2 yamt foffset = end_foffset; 722 1.1.2.2 yamt slot++; 723 1.1.2.2 yamt } 724 1.1.2.2 yamt UDF_UNLOCK_NODE(udf_node, 0); 725 1.1.2.2 yamt 726 1.1.2.2 yamt return 0; 727 1.1.2.2 yamt } 728 1.1.2.2 yamt 729 1.1.2.2 yamt /* --------------------------------------------------------------------- */ 730 1.1.2.2 yamt 731 1.1.2.2 yamt static int 732 1.1.2.2 yamt udf_search_free_vatloc(struct udf_mount *ump, uint32_t *lbnumres) 733 1.1.2.2 yamt { 734 1.1.2.2 yamt uint32_t lb_size, lb_num, lb_map, udf_rw32_lbmap; 735 1.1.2.2 yamt uint8_t *blob; 736 1.1.2.2 yamt int entry, chunk, found, error; 737 1.1.2.2 yamt 738 1.1.2.2 yamt KASSERT(ump); 739 1.1.2.2 yamt KASSERT(ump->logical_vol); 740 1.1.2.2 yamt 741 1.1.2.2 yamt lb_size = udf_rw32(ump->logical_vol->lb_size); 742 1.1.2.2 yamt blob = malloc(lb_size, M_UDFTEMP, M_WAITOK); 743 1.1.2.2 yamt 744 1.1.2.2 yamt /* TODO static allocation of search chunk */ 745 1.1.2.2 yamt 746 1.1.2.2 yamt lb_num = MIN(ump->vat_entries, ump->vat_last_free_lb); 747 1.1.2.2 yamt found = 0; 748 1.1.2.2 yamt error = 0; 749 1.1.2.2 yamt entry = 0; 750 1.1.2.2 yamt do { 751 1.1.2.2 yamt chunk = MIN(lb_size, (ump->vat_entries - lb_num) * 4); 752 1.1.2.2 yamt if (chunk <= 0) 753 1.1.2.2 yamt break; 754 1.1.2.2 yamt /* load in chunk */ 755 1.1.2.2 yamt error = udf_vat_read(ump->vat_node, blob, chunk, 756 1.1.2.2 yamt ump->vat_offset + lb_num * 4); 757 1.1.2.2 yamt 758 1.1.2.2 yamt if (error) 759 1.1.2.2 yamt break; 760 1.1.2.2 yamt 761 1.1.2.2 yamt /* search this chunk */ 762 1.1.2.2 yamt for (entry=0; entry < chunk /4; entry++, lb_num++) { 763 1.1.2.2 yamt udf_rw32_lbmap = *((uint32_t *) (blob + entry * 4)); 764 1.1.2.2 yamt lb_map = udf_rw32(udf_rw32_lbmap); 765 1.1.2.2 yamt if (lb_map == 0xffffffff) { 766 1.1.2.2 yamt found = 1; 767 1.1.2.2 yamt break; 768 1.1.2.2 yamt } 769 1.1.2.2 yamt } 770 1.1.2.2 yamt } while (!found); 771 1.1.2.2 yamt if (error) { 772 1.1.2.2 yamt printf("udf_search_free_vatloc: error reading in vat chunk " 773 1.1.2.2 yamt "(lb %d, size %d)\n", lb_num, chunk); 774 1.1.2.2 yamt } 775 1.1.2.2 yamt 776 1.1.2.2 yamt if (!found) { 777 1.1.2.2 yamt /* extend VAT */ 778 1.1.2.2 yamt DPRINTF(WRITE, ("udf_search_free_vatloc: extending\n")); 779 1.1.2.2 yamt lb_num = ump->vat_entries; 780 1.1.2.2 yamt ump->vat_entries++; 781 1.1.2.2 yamt } 782 1.1.2.2 yamt 783 1.1.2.2 yamt /* mark entry with initialiser just in case */ 784 1.1.2.2 yamt lb_map = udf_rw32(0xfffffffe); 785 1.1.2.2 yamt udf_vat_write(ump->vat_node, (uint8_t *) &lb_map, 4, 786 1.1.2.2 yamt ump->vat_offset + lb_num *4); 787 1.1.2.2 yamt ump->vat_last_free_lb = lb_num; 788 1.1.2.2 yamt 789 1.1.2.2 yamt free(blob, M_UDFTEMP); 790 1.1.2.2 yamt *lbnumres = lb_num; 791 1.1.2.2 yamt return 0; 792 1.1.2.2 yamt } 793 1.1.2.2 yamt 794 1.1.2.2 yamt 795 1.1.2.2 yamt static void 796 1.1.2.2 yamt udf_bitmap_allocate(struct udf_bitmap *bitmap, int ismetadata, 797 1.1.2.3 yamt uint32_t *num_lb, uint64_t *lmappos) 798 1.1.2.2 yamt { 799 1.1.2.2 yamt uint32_t offset, lb_num, bit; 800 1.1.2.2 yamt int32_t diff; 801 1.1.2.2 yamt uint8_t *bpos; 802 1.1.2.2 yamt int pass; 803 1.1.2.2 yamt 804 1.1.2.2 yamt if (!ismetadata) { 805 1.1.2.2 yamt /* heuristic to keep the two pointers not too close */ 806 1.1.2.2 yamt diff = bitmap->data_pos - bitmap->metadata_pos; 807 1.1.2.2 yamt if ((diff >= 0) && (diff < 1024)) 808 1.1.2.2 yamt bitmap->data_pos = bitmap->metadata_pos + 1024; 809 1.1.2.2 yamt } 810 1.1.2.2 yamt offset = ismetadata ? bitmap->metadata_pos : bitmap->data_pos; 811 1.1.2.2 yamt offset &= ~7; 812 1.1.2.2 yamt for (pass = 0; pass < 2; pass++) { 813 1.1.2.2 yamt if (offset >= bitmap->max_offset) 814 1.1.2.2 yamt offset = 0; 815 1.1.2.2 yamt 816 1.1.2.2 yamt while (offset < bitmap->max_offset) { 817 1.1.2.2 yamt if (*num_lb == 0) 818 1.1.2.2 yamt break; 819 1.1.2.2 yamt 820 1.1.2.2 yamt /* use first bit not set */ 821 1.1.2.2 yamt bpos = bitmap->bits + offset/8; 822 1.1.2.3 yamt bit = ffs(*bpos); /* returns 0 or 1..8 */ 823 1.1.2.2 yamt if (bit == 0) { 824 1.1.2.2 yamt offset += 8; 825 1.1.2.2 yamt continue; 826 1.1.2.2 yamt } 827 1.1.2.3 yamt 828 1.1.2.3 yamt /* check for ffs overshoot */ 829 1.1.2.3 yamt if (offset + bit-1 >= bitmap->max_offset) { 830 1.1.2.3 yamt offset = bitmap->max_offset; 831 1.1.2.3 yamt break; 832 1.1.2.3 yamt } 833 1.1.2.3 yamt 834 1.1.2.3 yamt DPRINTF(PARANOIA, ("XXX : allocate %d, %p, bit %d\n", 835 1.1.2.3 yamt offset + bit -1, bpos, bit-1)); 836 1.1.2.2 yamt *bpos &= ~(1 << (bit-1)); 837 1.1.2.2 yamt lb_num = offset + bit-1; 838 1.1.2.2 yamt *lmappos++ = lb_num; 839 1.1.2.2 yamt *num_lb = *num_lb - 1; 840 1.1.2.2 yamt // offset = (offset & ~7); 841 1.1.2.2 yamt } 842 1.1.2.2 yamt } 843 1.1.2.2 yamt 844 1.1.2.2 yamt if (ismetadata) { 845 1.1.2.2 yamt bitmap->metadata_pos = offset; 846 1.1.2.2 yamt } else { 847 1.1.2.2 yamt bitmap->data_pos = offset; 848 1.1.2.2 yamt } 849 1.1.2.2 yamt } 850 1.1.2.2 yamt 851 1.1.2.2 yamt 852 1.1.2.2 yamt static void 853 1.1.2.2 yamt udf_bitmap_free(struct udf_bitmap *bitmap, uint32_t lb_num, uint32_t num_lb) 854 1.1.2.2 yamt { 855 1.1.2.2 yamt uint32_t offset; 856 1.1.2.2 yamt uint32_t bit, bitval; 857 1.1.2.2 yamt uint8_t *bpos; 858 1.1.2.2 yamt 859 1.1.2.2 yamt offset = lb_num; 860 1.1.2.2 yamt 861 1.1.2.2 yamt /* starter bits */ 862 1.1.2.2 yamt bpos = bitmap->bits + offset/8; 863 1.1.2.2 yamt bit = offset % 8; 864 1.1.2.2 yamt while ((bit != 0) && (num_lb > 0)) { 865 1.1.2.2 yamt bitval = (1 << bit); 866 1.1.2.2 yamt KASSERT((*bpos & bitval) == 0); 867 1.1.2.3 yamt DPRINTF(PARANOIA, ("XXX : free %d, %p, %d\n", 868 1.1.2.3 yamt offset, bpos, bit)); 869 1.1.2.2 yamt *bpos |= bitval; 870 1.1.2.2 yamt offset++; num_lb--; 871 1.1.2.2 yamt bit = (bit + 1) % 8; 872 1.1.2.2 yamt } 873 1.1.2.2 yamt if (num_lb == 0) 874 1.1.2.2 yamt return; 875 1.1.2.2 yamt 876 1.1.2.2 yamt /* whole bytes */ 877 1.1.2.2 yamt KASSERT(bit == 0); 878 1.1.2.2 yamt bpos = bitmap->bits + offset / 8; 879 1.1.2.2 yamt while (num_lb >= 8) { 880 1.1.2.2 yamt KASSERT((*bpos == 0)); 881 1.1.2.3 yamt DPRINTF(PARANOIA, ("XXX : free %d + 8, %p\n", offset, bpos)); 882 1.1.2.2 yamt *bpos = 255; 883 1.1.2.2 yamt offset += 8; num_lb -= 8; 884 1.1.2.2 yamt bpos++; 885 1.1.2.2 yamt } 886 1.1.2.2 yamt 887 1.1.2.2 yamt /* stop bits */ 888 1.1.2.2 yamt KASSERT(num_lb < 8); 889 1.1.2.2 yamt bit = 0; 890 1.1.2.2 yamt while (num_lb > 0) { 891 1.1.2.2 yamt bitval = (1 << bit); 892 1.1.2.2 yamt KASSERT((*bpos & bitval) == 0); 893 1.1.2.3 yamt DPRINTF(PARANOIA, ("XXX : free %d, %p, %d\n", 894 1.1.2.3 yamt offset, bpos, bit)); 895 1.1.2.2 yamt *bpos |= bitval; 896 1.1.2.2 yamt offset++; num_lb--; 897 1.1.2.2 yamt bit = (bit + 1) % 8; 898 1.1.2.2 yamt } 899 1.1.2.2 yamt } 900 1.1.2.2 yamt 901 1.1.2.2 yamt 902 1.1.2.2 yamt /* allocate a contiguous sequence of sectornumbers */ 903 1.1.2.2 yamt static int 904 1.1.2.3 yamt udf_allocate_space(struct udf_mount *ump, int udf_c_type, 905 1.1.2.3 yamt uint16_t vpart_num, uint32_t num_lb, uint64_t *lmapping) 906 1.1.2.2 yamt { 907 1.1.2.2 yamt struct mmc_trackinfo *alloc_track, *other_track; 908 1.1.2.2 yamt struct udf_bitmap *bitmap; 909 1.1.2.2 yamt struct part_desc *pdesc; 910 1.1.2.2 yamt struct logvol_int_desc *lvid; 911 1.1.2.3 yamt uint64_t *lmappos; 912 1.1.2.2 yamt uint32_t ptov, lb_num, *freepos, free_lbs; 913 1.1.2.2 yamt int lb_size, alloc_num_lb; 914 1.1.2.3 yamt int alloc_type, error; 915 1.1.2.3 yamt int is_node; 916 1.1.2.2 yamt 917 1.1.2.3 yamt DPRINTF(CALL, ("udf_allocate_space(ctype %d, vpart %d, num_lb %d\n", 918 1.1.2.3 yamt udf_c_type, vpart_num, num_lb)); 919 1.1.2.2 yamt mutex_enter(&ump->allocate_mutex); 920 1.1.2.3 yamt 921 1.1.2.2 yamt lb_size = udf_rw32(ump->logical_vol->lb_size); 922 1.1.2.2 yamt KASSERT(lb_size == ump->discinfo.sector_size); 923 1.1.2.2 yamt 924 1.1.2.3 yamt /* XXX TODO check disc space */ 925 1.1.2.2 yamt 926 1.1.2.3 yamt alloc_type = ump->vtop_alloc[vpart_num]; 927 1.1.2.3 yamt is_node = (udf_c_type == UDF_C_NODE); 928 1.1.2.2 yamt 929 1.1.2.2 yamt lmappos = lmapping; 930 1.1.2.3 yamt error = 0; 931 1.1.2.2 yamt switch (alloc_type) { 932 1.1.2.2 yamt case UDF_ALLOC_VAT : 933 1.1.2.2 yamt /* search empty slot in VAT file */ 934 1.1.2.2 yamt KASSERT(num_lb == 1); 935 1.1.2.2 yamt error = udf_search_free_vatloc(ump, &lb_num); 936 1.1.2.3 yamt if (!error) 937 1.1.2.2 yamt *lmappos = lb_num; 938 1.1.2.2 yamt break; 939 1.1.2.2 yamt case UDF_ALLOC_SEQUENTIAL : 940 1.1.2.2 yamt /* sequential allocation on recordable media */ 941 1.1.2.3 yamt /* get partition backing up this vpart_num_num */ 942 1.1.2.3 yamt pdesc = ump->partitions[ump->vtop[vpart_num]]; 943 1.1.2.3 yamt 944 1.1.2.2 yamt /* calculate offset from physical base partition */ 945 1.1.2.2 yamt ptov = udf_rw32(pdesc->start_loc); 946 1.1.2.2 yamt 947 1.1.2.3 yamt /* get our track descriptors */ 948 1.1.2.3 yamt if (vpart_num == ump->node_part) { 949 1.1.2.3 yamt alloc_track = &ump->metadata_track; 950 1.1.2.3 yamt other_track = &ump->data_track; 951 1.1.2.3 yamt } else { 952 1.1.2.3 yamt alloc_track = &ump->data_track; 953 1.1.2.3 yamt other_track = &ump->metadata_track; 954 1.1.2.3 yamt } 955 1.1.2.3 yamt 956 1.1.2.3 yamt /* allocate */ 957 1.1.2.2 yamt for (lb_num = 0; lb_num < num_lb; lb_num++) { 958 1.1.2.2 yamt *lmappos++ = alloc_track->next_writable - ptov; 959 1.1.2.2 yamt alloc_track->next_writable++; 960 1.1.2.2 yamt alloc_track->free_blocks--; 961 1.1.2.2 yamt } 962 1.1.2.3 yamt 963 1.1.2.3 yamt /* keep other track up-to-date */ 964 1.1.2.2 yamt if (alloc_track->tracknr == other_track->tracknr) 965 1.1.2.2 yamt memcpy(other_track, alloc_track, 966 1.1.2.2 yamt sizeof(struct mmc_trackinfo)); 967 1.1.2.2 yamt break; 968 1.1.2.2 yamt case UDF_ALLOC_SPACEMAP : 969 1.1.2.3 yamt /* try to allocate on unallocated bits */ 970 1.1.2.2 yamt alloc_num_lb = num_lb; 971 1.1.2.3 yamt bitmap = &ump->part_unalloc_bits[vpart_num]; 972 1.1.2.3 yamt udf_bitmap_allocate(bitmap, is_node, &alloc_num_lb, lmappos); 973 1.1.2.2 yamt ump->lvclose |= UDF_WRITE_PART_BITMAPS; 974 1.1.2.3 yamt 975 1.1.2.3 yamt /* have we allocated all? */ 976 1.1.2.2 yamt if (alloc_num_lb) { 977 1.1.2.2 yamt /* TODO convert freed to unalloc and try again */ 978 1.1.2.2 yamt /* free allocated piece for now */ 979 1.1.2.2 yamt lmappos = lmapping; 980 1.1.2.2 yamt for (lb_num=0; lb_num < num_lb-alloc_num_lb; lb_num++) { 981 1.1.2.2 yamt udf_bitmap_free(bitmap, *lmappos++, 1); 982 1.1.2.2 yamt } 983 1.1.2.2 yamt error = ENOSPC; 984 1.1.2.2 yamt } 985 1.1.2.2 yamt if (!error) { 986 1.1.2.2 yamt /* adjust freecount */ 987 1.1.2.2 yamt lvid = ump->logvol_integrity; 988 1.1.2.3 yamt freepos = &lvid->tables[0] + vpart_num; 989 1.1.2.3 yamt free_lbs = udf_rw32(*freepos); 990 1.1.2.3 yamt *freepos = udf_rw32(free_lbs - num_lb); 991 1.1.2.3 yamt } 992 1.1.2.3 yamt break; 993 1.1.2.3 yamt case UDF_ALLOC_METABITMAP : /* UDF 2.50, 2.60 BluRay-RE */ 994 1.1.2.3 yamt /* allocate on metadata unallocated bits */ 995 1.1.2.3 yamt alloc_num_lb = num_lb; 996 1.1.2.3 yamt bitmap = &ump->metadata_unalloc_bits; 997 1.1.2.3 yamt udf_bitmap_allocate(bitmap, is_node, &alloc_num_lb, lmappos); 998 1.1.2.3 yamt ump->lvclose |= UDF_WRITE_PART_BITMAPS; 999 1.1.2.3 yamt 1000 1.1.2.3 yamt /* have we allocated all? */ 1001 1.1.2.3 yamt if (alloc_num_lb) { 1002 1.1.2.3 yamt /* YIKES! TODO we need to extend the metadata partition */ 1003 1.1.2.3 yamt /* free allocated piece for now */ 1004 1.1.2.3 yamt lmappos = lmapping; 1005 1.1.2.3 yamt for (lb_num=0; lb_num < num_lb-alloc_num_lb; lb_num++) { 1006 1.1.2.3 yamt udf_bitmap_free(bitmap, *lmappos++, 1); 1007 1.1.2.3 yamt } 1008 1.1.2.3 yamt error = ENOSPC; 1009 1.1.2.3 yamt } 1010 1.1.2.3 yamt if (!error) { 1011 1.1.2.3 yamt /* adjust freecount */ 1012 1.1.2.3 yamt lvid = ump->logvol_integrity; 1013 1.1.2.3 yamt freepos = &lvid->tables[0] + vpart_num; 1014 1.1.2.2 yamt free_lbs = udf_rw32(*freepos); 1015 1.1.2.2 yamt *freepos = udf_rw32(free_lbs - num_lb); 1016 1.1.2.2 yamt } 1017 1.1.2.2 yamt break; 1018 1.1.2.3 yamt case UDF_ALLOC_METASEQUENTIAL : /* UDF 2.60 BluRay-R */ 1019 1.1.2.3 yamt case UDF_ALLOC_RELAXEDSEQUENTIAL : /* UDF 2.50/~meta BluRay-R */ 1020 1.1.2.2 yamt printf("ALERT: udf_allocate_space : allocation %d " 1021 1.1.2.2 yamt "not implemented yet!\n", alloc_type); 1022 1.1.2.2 yamt /* TODO implement, doesn't have to be contiguous */ 1023 1.1.2.2 yamt error = ENOSPC; 1024 1.1.2.2 yamt break; 1025 1.1.2.2 yamt } 1026 1.1.2.2 yamt 1027 1.1.2.2 yamt #ifdef DEBUG 1028 1.1.2.2 yamt if (udf_verbose & UDF_DEBUG_ALLOC) { 1029 1.1.2.2 yamt lmappos = lmapping; 1030 1.1.2.3 yamt printf("udf_allocate_space, allocated logical lba :\n"); 1031 1.1.2.2 yamt for (lb_num = 0; lb_num < num_lb; lb_num++) { 1032 1.1.2.3 yamt printf("%s %"PRIu64",", (lb_num > 0)?",":"", 1033 1.1.2.3 yamt *lmappos++); 1034 1.1.2.2 yamt } 1035 1.1.2.3 yamt printf("\n"); 1036 1.1.2.2 yamt } 1037 1.1.2.2 yamt #endif 1038 1.1.2.2 yamt mutex_exit(&ump->allocate_mutex); 1039 1.1.2.2 yamt 1040 1.1.2.2 yamt return error; 1041 1.1.2.2 yamt } 1042 1.1.2.2 yamt 1043 1.1.2.2 yamt /* --------------------------------------------------------------------- */ 1044 1.1.2.2 yamt 1045 1.1.2.2 yamt void 1046 1.1.2.2 yamt udf_free_allocated_space(struct udf_mount *ump, uint32_t lb_num, 1047 1.1.2.2 yamt uint16_t vpart_num, uint32_t num_lb) 1048 1.1.2.2 yamt { 1049 1.1.2.2 yamt struct udf_bitmap *bitmap; 1050 1.1.2.2 yamt struct part_desc *pdesc; 1051 1.1.2.2 yamt struct logvol_int_desc *lvid; 1052 1.1.2.2 yamt uint32_t ptov, lb_map, udf_rw32_lbmap; 1053 1.1.2.2 yamt uint32_t *freepos, free_lbs; 1054 1.1.2.2 yamt int phys_part; 1055 1.1.2.2 yamt int error; 1056 1.1.2.2 yamt 1057 1.1.2.2 yamt DPRINTF(ALLOC, ("udf_free_allocated_space: freeing virt lbnum %d " 1058 1.1.2.2 yamt "part %d + %d sect\n", lb_num, vpart_num, num_lb)); 1059 1.1.2.2 yamt 1060 1.1.2.3 yamt /* no use freeing zero length */ 1061 1.1.2.3 yamt if (num_lb == 0) 1062 1.1.2.3 yamt return; 1063 1.1.2.3 yamt 1064 1.1.2.2 yamt mutex_enter(&ump->allocate_mutex); 1065 1.1.2.2 yamt 1066 1.1.2.2 yamt /* get partition backing up this vpart_num */ 1067 1.1.2.2 yamt pdesc = ump->partitions[ump->vtop[vpart_num]]; 1068 1.1.2.2 yamt 1069 1.1.2.2 yamt switch (ump->vtop_tp[vpart_num]) { 1070 1.1.2.2 yamt case UDF_VTOP_TYPE_PHYS : 1071 1.1.2.2 yamt case UDF_VTOP_TYPE_SPARABLE : 1072 1.1.2.2 yamt /* free space to freed or unallocated space bitmap */ 1073 1.1.2.2 yamt ptov = udf_rw32(pdesc->start_loc); 1074 1.1.2.2 yamt phys_part = ump->vtop[vpart_num]; 1075 1.1.2.2 yamt 1076 1.1.2.2 yamt /* first try freed space bitmap */ 1077 1.1.2.2 yamt bitmap = &ump->part_freed_bits[phys_part]; 1078 1.1.2.2 yamt 1079 1.1.2.2 yamt /* if not defined, use unallocated bitmap */ 1080 1.1.2.2 yamt if (bitmap->bits == NULL) 1081 1.1.2.2 yamt bitmap = &ump->part_unalloc_bits[phys_part]; 1082 1.1.2.2 yamt 1083 1.1.2.3 yamt /* if no bitmaps are defined, bail out; XXX OK? */ 1084 1.1.2.2 yamt if (bitmap->bits == NULL) 1085 1.1.2.2 yamt break; 1086 1.1.2.2 yamt 1087 1.1.2.2 yamt /* free bits if its defined */ 1088 1.1.2.2 yamt KASSERT(bitmap->bits); 1089 1.1.2.2 yamt ump->lvclose |= UDF_WRITE_PART_BITMAPS; 1090 1.1.2.2 yamt udf_bitmap_free(bitmap, lb_num, num_lb); 1091 1.1.2.2 yamt 1092 1.1.2.2 yamt /* adjust freecount */ 1093 1.1.2.2 yamt lvid = ump->logvol_integrity; 1094 1.1.2.2 yamt freepos = &lvid->tables[0] + vpart_num; 1095 1.1.2.2 yamt free_lbs = udf_rw32(*freepos); 1096 1.1.2.2 yamt *freepos = udf_rw32(free_lbs + num_lb); 1097 1.1.2.2 yamt break; 1098 1.1.2.2 yamt case UDF_VTOP_TYPE_VIRT : 1099 1.1.2.2 yamt /* free this VAT entry */ 1100 1.1.2.2 yamt KASSERT(num_lb == 1); 1101 1.1.2.2 yamt 1102 1.1.2.2 yamt lb_map = 0xffffffff; 1103 1.1.2.2 yamt udf_rw32_lbmap = udf_rw32(lb_map); 1104 1.1.2.2 yamt error = udf_vat_write(ump->vat_node, 1105 1.1.2.2 yamt (uint8_t *) &udf_rw32_lbmap, 4, 1106 1.1.2.2 yamt ump->vat_offset + lb_num * 4); 1107 1.1.2.2 yamt KASSERT(error == 0); 1108 1.1.2.2 yamt ump->vat_last_free_lb = MIN(ump->vat_last_free_lb, lb_num); 1109 1.1.2.2 yamt break; 1110 1.1.2.2 yamt case UDF_VTOP_TYPE_META : 1111 1.1.2.2 yamt /* free space in the metadata bitmap */ 1112 1.1.2.3 yamt bitmap = &ump->metadata_unalloc_bits; 1113 1.1.2.3 yamt KASSERT(bitmap->bits); 1114 1.1.2.3 yamt 1115 1.1.2.3 yamt ump->lvclose |= UDF_WRITE_PART_BITMAPS; 1116 1.1.2.3 yamt udf_bitmap_free(bitmap, lb_num, num_lb); 1117 1.1.2.3 yamt 1118 1.1.2.3 yamt /* adjust freecount */ 1119 1.1.2.3 yamt lvid = ump->logvol_integrity; 1120 1.1.2.3 yamt freepos = &lvid->tables[0] + vpart_num; 1121 1.1.2.3 yamt free_lbs = udf_rw32(*freepos); 1122 1.1.2.3 yamt *freepos = udf_rw32(free_lbs + num_lb); 1123 1.1.2.3 yamt break; 1124 1.1.2.2 yamt default: 1125 1.1.2.2 yamt printf("ALERT: udf_free_allocated_space : allocation %d " 1126 1.1.2.2 yamt "not implemented yet!\n", ump->vtop_tp[vpart_num]); 1127 1.1.2.2 yamt break; 1128 1.1.2.2 yamt } 1129 1.1.2.2 yamt 1130 1.1.2.2 yamt mutex_exit(&ump->allocate_mutex); 1131 1.1.2.2 yamt } 1132 1.1.2.2 yamt 1133 1.1.2.2 yamt /* --------------------------------------------------------------------- */ 1134 1.1.2.2 yamt 1135 1.1.2.2 yamt int 1136 1.1.2.3 yamt udf_pre_allocate_space(struct udf_mount *ump, int udf_c_type, 1137 1.1.2.3 yamt uint32_t num_lb, uint16_t vpartnr, uint64_t *lmapping) 1138 1.1.2.2 yamt { 1139 1.1.2.3 yamt /* TODO properly maintain uncomitted_lb per partition */ 1140 1.1.2.2 yamt 1141 1.1.2.2 yamt /* reserve size for VAT allocated data */ 1142 1.1.2.3 yamt if (ump->vtop_alloc[vpartnr] == UDF_ALLOC_VAT) { 1143 1.1.2.2 yamt mutex_enter(&ump->allocate_mutex); 1144 1.1.2.2 yamt ump->uncomitted_lb += num_lb; 1145 1.1.2.2 yamt mutex_exit(&ump->allocate_mutex); 1146 1.1.2.2 yamt } 1147 1.1.2.2 yamt 1148 1.1.2.3 yamt return udf_allocate_space(ump, udf_c_type, vpartnr, num_lb, lmapping); 1149 1.1.2.2 yamt } 1150 1.1.2.2 yamt 1151 1.1.2.2 yamt /* --------------------------------------------------------------------- */ 1152 1.1.2.2 yamt 1153 1.1.2.2 yamt /* 1154 1.1.2.2 yamt * Allocate a buf on disc for direct write out. The space doesn't have to be 1155 1.1.2.2 yamt * contiguous as the caller takes care of this. 1156 1.1.2.2 yamt */ 1157 1.1.2.2 yamt 1158 1.1.2.2 yamt void 1159 1.1.2.2 yamt udf_late_allocate_buf(struct udf_mount *ump, struct buf *buf, 1160 1.1.2.3 yamt uint64_t *lmapping, struct long_ad *node_ad_cpy, uint16_t *vpart_nump) 1161 1.1.2.2 yamt { 1162 1.1.2.2 yamt struct udf_node *udf_node = VTOI(buf->b_vp); 1163 1.1.2.2 yamt int lb_size, blks, udf_c_type; 1164 1.1.2.3 yamt int vpart_num, num_lb; 1165 1.1.2.2 yamt int error, s; 1166 1.1.2.2 yamt 1167 1.1.2.2 yamt /* 1168 1.1.2.2 yamt * for each sector in the buf, allocate a sector on disc and record 1169 1.1.2.2 yamt * its position in the provided mapping array. 1170 1.1.2.2 yamt * 1171 1.1.2.2 yamt * If its userdata or FIDs, record its location in its node. 1172 1.1.2.2 yamt */ 1173 1.1.2.2 yamt 1174 1.1.2.2 yamt lb_size = udf_rw32(ump->logical_vol->lb_size); 1175 1.1.2.2 yamt num_lb = (buf->b_bcount + lb_size -1) / lb_size; 1176 1.1.2.2 yamt blks = lb_size / DEV_BSIZE; 1177 1.1.2.2 yamt udf_c_type = buf->b_udf_c_type; 1178 1.1.2.2 yamt 1179 1.1.2.2 yamt KASSERT(lb_size == ump->discinfo.sector_size); 1180 1.1.2.2 yamt 1181 1.1.2.3 yamt /* select partition to record the buffer on */ 1182 1.1.2.3 yamt vpart_num = ump->data_part; 1183 1.1.2.3 yamt if (udf_c_type == UDF_C_NODE) 1184 1.1.2.3 yamt vpart_num = ump->node_part; 1185 1.1.2.3 yamt if (udf_c_type == UDF_C_FIDS) 1186 1.1.2.3 yamt vpart_num = ump->fids_part; 1187 1.1.2.3 yamt *vpart_nump = vpart_num; 1188 1.1.2.2 yamt 1189 1.1.2.2 yamt if (udf_c_type == UDF_C_NODE) { 1190 1.1.2.2 yamt /* if not VAT, its allready allocated */ 1191 1.1.2.3 yamt if (ump->vtop_alloc[ump->node_part] != UDF_ALLOC_VAT) 1192 1.1.2.2 yamt return; 1193 1.1.2.2 yamt 1194 1.1.2.3 yamt /* allocate on its backing sequential partition */ 1195 1.1.2.3 yamt vpart_num = ump->data_part; 1196 1.1.2.2 yamt } 1197 1.1.2.2 yamt 1198 1.1.2.3 yamt /* do allocation on the selected partition */ 1199 1.1.2.3 yamt error = udf_allocate_space(ump, udf_c_type, 1200 1.1.2.3 yamt vpart_num, num_lb, lmapping); 1201 1.1.2.2 yamt if (error) { 1202 1.1.2.2 yamt /* ARGH! we've not done our accounting right! */ 1203 1.1.2.2 yamt panic("UDF disc allocation accounting gone wrong"); 1204 1.1.2.2 yamt } 1205 1.1.2.2 yamt 1206 1.1.2.2 yamt /* commit our sector count */ 1207 1.1.2.2 yamt mutex_enter(&ump->allocate_mutex); 1208 1.1.2.2 yamt if (num_lb > ump->uncomitted_lb) { 1209 1.1.2.2 yamt ump->uncomitted_lb = 0; 1210 1.1.2.2 yamt } else { 1211 1.1.2.2 yamt ump->uncomitted_lb -= num_lb; 1212 1.1.2.2 yamt } 1213 1.1.2.2 yamt mutex_exit(&ump->allocate_mutex); 1214 1.1.2.2 yamt 1215 1.1.2.2 yamt /* If its userdata or FIDs, record its allocation in its node. */ 1216 1.1.2.3 yamt if ((udf_c_type == UDF_C_USERDATA) || 1217 1.1.2.3 yamt (udf_c_type == UDF_C_FIDS) || 1218 1.1.2.3 yamt (udf_c_type == UDF_C_METADATA_SBM)) 1219 1.1.2.3 yamt { 1220 1.1.2.2 yamt udf_record_allocation_in_node(ump, buf, vpart_num, lmapping, 1221 1.1.2.2 yamt node_ad_cpy); 1222 1.1.2.2 yamt /* decrement our outstanding bufs counter */ 1223 1.1.2.2 yamt s = splbio(); 1224 1.1.2.2 yamt udf_node->outstanding_bufs--; 1225 1.1.2.2 yamt splx(s); 1226 1.1.2.2 yamt } 1227 1.1.2.2 yamt } 1228 1.1.2.2 yamt 1229 1.1.2.2 yamt /* --------------------------------------------------------------------- */ 1230 1.1.2.2 yamt 1231 1.1.2.2 yamt /* 1232 1.1.2.2 yamt * Try to merge a1 with the new piece a2. udf_ads_merge returns error when not 1233 1.1.2.2 yamt * possible (anymore); a2 returns the rest piece. 1234 1.1.2.2 yamt */ 1235 1.1.2.2 yamt 1236 1.1.2.2 yamt static int 1237 1.1.2.2 yamt udf_ads_merge(uint32_t lb_size, struct long_ad *a1, struct long_ad *a2) 1238 1.1.2.2 yamt { 1239 1.1.2.2 yamt uint32_t max_len, merge_len; 1240 1.1.2.2 yamt uint32_t a1_len, a2_len; 1241 1.1.2.2 yamt uint32_t a1_flags, a2_flags; 1242 1.1.2.2 yamt uint32_t a1_lbnum, a2_lbnum; 1243 1.1.2.2 yamt uint16_t a1_part, a2_part; 1244 1.1.2.2 yamt 1245 1.1.2.2 yamt max_len = ((UDF_EXT_MAXLEN / lb_size) * lb_size); 1246 1.1.2.2 yamt 1247 1.1.2.2 yamt a1_flags = UDF_EXT_FLAGS(udf_rw32(a1->len)); 1248 1.1.2.2 yamt a1_len = UDF_EXT_LEN(udf_rw32(a1->len)); 1249 1.1.2.2 yamt a1_lbnum = udf_rw32(a1->loc.lb_num); 1250 1.1.2.2 yamt a1_part = udf_rw16(a1->loc.part_num); 1251 1.1.2.2 yamt 1252 1.1.2.2 yamt a2_flags = UDF_EXT_FLAGS(udf_rw32(a2->len)); 1253 1.1.2.2 yamt a2_len = UDF_EXT_LEN(udf_rw32(a2->len)); 1254 1.1.2.2 yamt a2_lbnum = udf_rw32(a2->loc.lb_num); 1255 1.1.2.2 yamt a2_part = udf_rw16(a2->loc.part_num); 1256 1.1.2.2 yamt 1257 1.1.2.2 yamt /* defines same space */ 1258 1.1.2.2 yamt if (a1_flags != a2_flags) 1259 1.1.2.2 yamt return 1; 1260 1.1.2.2 yamt 1261 1.1.2.2 yamt if (a1_flags != UDF_EXT_FREE) { 1262 1.1.2.2 yamt /* the same partition */ 1263 1.1.2.2 yamt if (a1_part != a2_part) 1264 1.1.2.2 yamt return 1; 1265 1.1.2.2 yamt 1266 1.1.2.2 yamt /* a2 is successor of a1 */ 1267 1.1.2.2 yamt if (a1_lbnum * lb_size + a1_len != a2_lbnum * lb_size) 1268 1.1.2.2 yamt return 1; 1269 1.1.2.2 yamt } 1270 1.1.2.3 yamt 1271 1.1.2.2 yamt /* merge as most from a2 if possible */ 1272 1.1.2.2 yamt merge_len = MIN(a2_len, max_len - a1_len); 1273 1.1.2.2 yamt a1_len += merge_len; 1274 1.1.2.2 yamt a2_len -= merge_len; 1275 1.1.2.2 yamt a2_lbnum += merge_len/lb_size; 1276 1.1.2.2 yamt 1277 1.1.2.2 yamt a1->len = udf_rw32(a1_len | a1_flags); 1278 1.1.2.2 yamt a2->len = udf_rw32(a2_len | a2_flags); 1279 1.1.2.2 yamt a2->loc.lb_num = udf_rw32(a2_lbnum); 1280 1.1.2.2 yamt 1281 1.1.2.2 yamt if (a2_len > 0) 1282 1.1.2.2 yamt return 1; 1283 1.1.2.2 yamt 1284 1.1.2.2 yamt /* there is space over to merge */ 1285 1.1.2.2 yamt return 0; 1286 1.1.2.2 yamt } 1287 1.1.2.2 yamt 1288 1.1.2.2 yamt /* --------------------------------------------------------------------- */ 1289 1.1.2.2 yamt 1290 1.1.2.2 yamt static void 1291 1.1.2.2 yamt udf_wipe_adslots(struct udf_node *udf_node) 1292 1.1.2.2 yamt { 1293 1.1.2.2 yamt struct file_entry *fe; 1294 1.1.2.2 yamt struct extfile_entry *efe; 1295 1.1.2.2 yamt struct alloc_ext_entry *ext; 1296 1.1.2.2 yamt uint64_t inflen, objsize; 1297 1.1.2.2 yamt uint32_t lb_size, dscr_size, l_ea, l_ad, max_l_ad, crclen; 1298 1.1.2.2 yamt uint8_t *data_pos; 1299 1.1.2.2 yamt int extnr; 1300 1.1.2.2 yamt 1301 1.1.2.2 yamt lb_size = udf_rw32(udf_node->ump->logical_vol->lb_size); 1302 1.1.2.2 yamt 1303 1.1.2.2 yamt fe = udf_node->fe; 1304 1.1.2.2 yamt efe = udf_node->efe; 1305 1.1.2.2 yamt if (fe) { 1306 1.1.2.2 yamt inflen = udf_rw64(fe->inf_len); 1307 1.1.2.2 yamt objsize = inflen; 1308 1.1.2.2 yamt dscr_size = sizeof(struct file_entry) -1; 1309 1.1.2.2 yamt l_ea = udf_rw32(fe->l_ea); 1310 1.1.2.2 yamt l_ad = udf_rw32(fe->l_ad); 1311 1.1.2.2 yamt data_pos = (uint8_t *) fe + dscr_size + l_ea; 1312 1.1.2.2 yamt } else { 1313 1.1.2.2 yamt inflen = udf_rw64(efe->inf_len); 1314 1.1.2.2 yamt objsize = udf_rw64(efe->obj_size); 1315 1.1.2.2 yamt dscr_size = sizeof(struct extfile_entry) -1; 1316 1.1.2.2 yamt l_ea = udf_rw32(efe->l_ea); 1317 1.1.2.2 yamt l_ad = udf_rw32(efe->l_ad); 1318 1.1.2.2 yamt data_pos = (uint8_t *) efe + dscr_size + l_ea; 1319 1.1.2.2 yamt } 1320 1.1.2.2 yamt max_l_ad = lb_size - dscr_size - l_ea; 1321 1.1.2.2 yamt 1322 1.1.2.2 yamt /* wipe fe/efe */ 1323 1.1.2.2 yamt memset(data_pos, 0, max_l_ad); 1324 1.1.2.2 yamt crclen = dscr_size - UDF_DESC_TAG_LENGTH + l_ea; 1325 1.1.2.2 yamt if (fe) { 1326 1.1.2.2 yamt fe->l_ad = udf_rw32(0); 1327 1.1.2.2 yamt fe->logblks_rec = udf_rw64(0); 1328 1.1.2.2 yamt fe->tag.desc_crc_len = udf_rw32(crclen); 1329 1.1.2.2 yamt } else { 1330 1.1.2.2 yamt efe->l_ad = udf_rw32(0); 1331 1.1.2.2 yamt efe->logblks_rec = udf_rw64(0); 1332 1.1.2.2 yamt efe->tag.desc_crc_len = udf_rw32(crclen); 1333 1.1.2.2 yamt } 1334 1.1.2.2 yamt 1335 1.1.2.2 yamt /* wipe all allocation extent entries */ 1336 1.1.2.2 yamt for (extnr = 0; extnr < udf_node->num_extensions; extnr++) { 1337 1.1.2.2 yamt ext = udf_node->ext[extnr]; 1338 1.1.2.2 yamt dscr_size = sizeof(struct alloc_ext_entry) -1; 1339 1.1.2.3 yamt data_pos = (uint8_t *) ext->data; 1340 1.1.2.2 yamt max_l_ad = lb_size - dscr_size; 1341 1.1.2.2 yamt memset(data_pos, 0, max_l_ad); 1342 1.1.2.2 yamt ext->l_ad = udf_rw32(0); 1343 1.1.2.2 yamt 1344 1.1.2.2 yamt crclen = dscr_size - UDF_DESC_TAG_LENGTH; 1345 1.1.2.2 yamt ext->tag.desc_crc_len = udf_rw32(crclen); 1346 1.1.2.2 yamt } 1347 1.1.2.3 yamt udf_node->i_flags |= IN_NODE_REBUILD; 1348 1.1.2.2 yamt } 1349 1.1.2.2 yamt 1350 1.1.2.2 yamt /* --------------------------------------------------------------------- */ 1351 1.1.2.2 yamt 1352 1.1.2.2 yamt void 1353 1.1.2.2 yamt udf_get_adslot(struct udf_node *udf_node, int slot, struct long_ad *icb, 1354 1.1.2.2 yamt int *eof) { 1355 1.1.2.2 yamt struct file_entry *fe; 1356 1.1.2.2 yamt struct extfile_entry *efe; 1357 1.1.2.2 yamt struct alloc_ext_entry *ext; 1358 1.1.2.2 yamt struct icb_tag *icbtag; 1359 1.1.2.2 yamt struct short_ad *short_ad; 1360 1.1.2.3 yamt struct long_ad *long_ad, l_icb; 1361 1.1.2.2 yamt uint32_t offset; 1362 1.1.2.3 yamt uint32_t lb_size, dscr_size, l_ea, l_ad, flags; 1363 1.1.2.2 yamt uint8_t *data_pos; 1364 1.1.2.2 yamt int icbflags, addr_type, adlen, extnr; 1365 1.1.2.2 yamt 1366 1.1.2.2 yamt /* determine what descriptor we are in */ 1367 1.1.2.2 yamt lb_size = udf_rw32(udf_node->ump->logical_vol->lb_size); 1368 1.1.2.2 yamt 1369 1.1.2.2 yamt fe = udf_node->fe; 1370 1.1.2.2 yamt efe = udf_node->efe; 1371 1.1.2.2 yamt if (fe) { 1372 1.1.2.2 yamt icbtag = &fe->icbtag; 1373 1.1.2.2 yamt dscr_size = sizeof(struct file_entry) -1; 1374 1.1.2.2 yamt l_ea = udf_rw32(fe->l_ea); 1375 1.1.2.2 yamt l_ad = udf_rw32(fe->l_ad); 1376 1.1.2.2 yamt data_pos = (uint8_t *) fe + dscr_size + l_ea; 1377 1.1.2.2 yamt } else { 1378 1.1.2.2 yamt icbtag = &efe->icbtag; 1379 1.1.2.2 yamt dscr_size = sizeof(struct extfile_entry) -1; 1380 1.1.2.2 yamt l_ea = udf_rw32(efe->l_ea); 1381 1.1.2.2 yamt l_ad = udf_rw32(efe->l_ad); 1382 1.1.2.2 yamt data_pos = (uint8_t *) efe + dscr_size + l_ea; 1383 1.1.2.2 yamt } 1384 1.1.2.2 yamt 1385 1.1.2.2 yamt icbflags = udf_rw16(icbtag->flags); 1386 1.1.2.2 yamt addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 1387 1.1.2.2 yamt 1388 1.1.2.2 yamt /* just in case we're called on an intern, its EOF */ 1389 1.1.2.2 yamt if (addr_type == UDF_ICB_INTERN_ALLOC) { 1390 1.1.2.2 yamt memset(icb, 0, sizeof(struct long_ad)); 1391 1.1.2.2 yamt *eof = 1; 1392 1.1.2.2 yamt return; 1393 1.1.2.2 yamt } 1394 1.1.2.2 yamt 1395 1.1.2.2 yamt adlen = 0; 1396 1.1.2.2 yamt if (addr_type == UDF_ICB_SHORT_ALLOC) { 1397 1.1.2.2 yamt adlen = sizeof(struct short_ad); 1398 1.1.2.2 yamt } else if (addr_type == UDF_ICB_LONG_ALLOC) { 1399 1.1.2.2 yamt adlen = sizeof(struct long_ad); 1400 1.1.2.2 yamt } 1401 1.1.2.2 yamt 1402 1.1.2.2 yamt /* if offset too big, we go to the allocation extensions */ 1403 1.1.2.2 yamt offset = slot * adlen; 1404 1.1.2.3 yamt extnr = -1; 1405 1.1.2.3 yamt while (offset >= l_ad) { 1406 1.1.2.3 yamt /* check if our last entry is a redirect */ 1407 1.1.2.3 yamt if (addr_type == UDF_ICB_SHORT_ALLOC) { 1408 1.1.2.3 yamt short_ad = (struct short_ad *) (data_pos + l_ad-adlen); 1409 1.1.2.3 yamt l_icb.len = short_ad->len; 1410 1.1.2.3 yamt l_icb.loc.part_num = udf_node->loc.loc.part_num; 1411 1.1.2.3 yamt l_icb.loc.lb_num = short_ad->lb_num; 1412 1.1.2.3 yamt } else { 1413 1.1.2.3 yamt KASSERT(addr_type == UDF_ICB_LONG_ALLOC); 1414 1.1.2.3 yamt long_ad = (struct long_ad *) (data_pos + l_ad-adlen); 1415 1.1.2.3 yamt l_icb = *long_ad; 1416 1.1.2.3 yamt } 1417 1.1.2.3 yamt flags = UDF_EXT_FLAGS(udf_rw32(l_icb.len)); 1418 1.1.2.3 yamt if (flags != UDF_EXT_REDIRECT) { 1419 1.1.2.3 yamt l_ad = 0; /* force EOF */ 1420 1.1.2.3 yamt break; 1421 1.1.2.3 yamt } 1422 1.1.2.3 yamt 1423 1.1.2.3 yamt /* advance to next extent */ 1424 1.1.2.2 yamt extnr++; 1425 1.1.2.3 yamt if (extnr >= udf_node->num_extensions) { 1426 1.1.2.2 yamt l_ad = 0; /* force EOF */ 1427 1.1.2.2 yamt break; 1428 1.1.2.2 yamt } 1429 1.1.2.3 yamt offset = offset - l_ad; 1430 1.1.2.3 yamt ext = udf_node->ext[extnr]; 1431 1.1.2.3 yamt dscr_size = sizeof(struct alloc_ext_entry) -1; 1432 1.1.2.3 yamt l_ad = udf_rw32(ext->l_ad); 1433 1.1.2.3 yamt data_pos = (uint8_t *) ext + dscr_size; 1434 1.1.2.2 yamt } 1435 1.1.2.2 yamt 1436 1.1.2.3 yamt /* XXX l_ad == 0 should be enough to check */ 1437 1.1.2.2 yamt *eof = (offset >= l_ad) || (l_ad == 0); 1438 1.1.2.2 yamt if (*eof) { 1439 1.1.2.3 yamt DPRINTF(PARANOIDADWLK, ("returning EOF, extnr %d, offset %d, " 1440 1.1.2.3 yamt "l_ad %d\n", extnr, offset, l_ad)); 1441 1.1.2.2 yamt memset(icb, 0, sizeof(struct long_ad)); 1442 1.1.2.2 yamt return; 1443 1.1.2.2 yamt } 1444 1.1.2.2 yamt 1445 1.1.2.2 yamt /* get the element */ 1446 1.1.2.2 yamt if (addr_type == UDF_ICB_SHORT_ALLOC) { 1447 1.1.2.2 yamt short_ad = (struct short_ad *) (data_pos + offset); 1448 1.1.2.2 yamt icb->len = short_ad->len; 1449 1.1.2.3 yamt icb->loc.part_num = udf_node->loc.loc.part_num; 1450 1.1.2.2 yamt icb->loc.lb_num = short_ad->lb_num; 1451 1.1.2.2 yamt } else if (addr_type == UDF_ICB_LONG_ALLOC) { 1452 1.1.2.2 yamt long_ad = (struct long_ad *) (data_pos + offset); 1453 1.1.2.2 yamt *icb = *long_ad; 1454 1.1.2.2 yamt } 1455 1.1.2.3 yamt DPRINTF(PARANOIDADWLK, ("returning element : v %d, lb %d, len %d, " 1456 1.1.2.3 yamt "flags %d\n", icb->loc.part_num, icb->loc.lb_num, 1457 1.1.2.3 yamt UDF_EXT_LEN(icb->len), UDF_EXT_FLAGS(icb->len))); 1458 1.1.2.2 yamt } 1459 1.1.2.2 yamt 1460 1.1.2.2 yamt /* --------------------------------------------------------------------- */ 1461 1.1.2.2 yamt 1462 1.1.2.2 yamt int 1463 1.1.2.3 yamt udf_append_adslot(struct udf_node *udf_node, int *slot, struct long_ad *icb) { 1464 1.1.2.3 yamt struct udf_mount *ump = udf_node->ump; 1465 1.1.2.3 yamt union dscrptr *dscr, *extdscr; 1466 1.1.2.2 yamt struct file_entry *fe; 1467 1.1.2.2 yamt struct extfile_entry *efe; 1468 1.1.2.2 yamt struct alloc_ext_entry *ext; 1469 1.1.2.2 yamt struct icb_tag *icbtag; 1470 1.1.2.2 yamt struct short_ad *short_ad; 1471 1.1.2.3 yamt struct long_ad *long_ad, o_icb, l_icb; 1472 1.1.2.2 yamt uint64_t logblks_rec, *logblks_rec_p; 1473 1.1.2.3 yamt uint64_t lmapping; 1474 1.1.2.3 yamt uint32_t offset, rest, len, lb_num; 1475 1.1.2.2 yamt uint32_t lb_size, dscr_size, l_ea, l_ad, *l_ad_p, max_l_ad, crclen; 1476 1.1.2.3 yamt uint32_t flags; 1477 1.1.2.3 yamt uint16_t vpart_num; 1478 1.1.2.2 yamt uint8_t *data_pos; 1479 1.1.2.2 yamt int icbflags, addr_type, adlen, extnr; 1480 1.1.2.3 yamt int error; 1481 1.1.2.2 yamt 1482 1.1.2.3 yamt lb_size = udf_rw32(ump->logical_vol->lb_size); 1483 1.1.2.3 yamt vpart_num = udf_rw16(udf_node->loc.loc.part_num); 1484 1.1.2.2 yamt 1485 1.1.2.3 yamt /* determine what descriptor we are in */ 1486 1.1.2.2 yamt fe = udf_node->fe; 1487 1.1.2.2 yamt efe = udf_node->efe; 1488 1.1.2.2 yamt if (fe) { 1489 1.1.2.2 yamt icbtag = &fe->icbtag; 1490 1.1.2.2 yamt dscr = (union dscrptr *) fe; 1491 1.1.2.2 yamt dscr_size = sizeof(struct file_entry) -1; 1492 1.1.2.2 yamt 1493 1.1.2.2 yamt l_ea = udf_rw32(fe->l_ea); 1494 1.1.2.2 yamt l_ad_p = &fe->l_ad; 1495 1.1.2.2 yamt logblks_rec_p = &fe->logblks_rec; 1496 1.1.2.2 yamt } else { 1497 1.1.2.2 yamt icbtag = &efe->icbtag; 1498 1.1.2.2 yamt dscr = (union dscrptr *) efe; 1499 1.1.2.2 yamt dscr_size = sizeof(struct extfile_entry) -1; 1500 1.1.2.2 yamt 1501 1.1.2.2 yamt l_ea = udf_rw32(efe->l_ea); 1502 1.1.2.2 yamt l_ad_p = &efe->l_ad; 1503 1.1.2.2 yamt logblks_rec_p = &efe->logblks_rec; 1504 1.1.2.2 yamt } 1505 1.1.2.2 yamt data_pos = (uint8_t *) dscr + dscr_size + l_ea; 1506 1.1.2.2 yamt max_l_ad = lb_size - dscr_size - l_ea; 1507 1.1.2.2 yamt 1508 1.1.2.2 yamt icbflags = udf_rw16(icbtag->flags); 1509 1.1.2.2 yamt addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 1510 1.1.2.2 yamt 1511 1.1.2.2 yamt /* just in case we're called on an intern, its EOF */ 1512 1.1.2.2 yamt if (addr_type == UDF_ICB_INTERN_ALLOC) { 1513 1.1.2.2 yamt panic("udf_append_adslot on UDF_ICB_INTERN_ALLOC\n"); 1514 1.1.2.2 yamt } 1515 1.1.2.2 yamt 1516 1.1.2.2 yamt adlen = 0; 1517 1.1.2.2 yamt if (addr_type == UDF_ICB_SHORT_ALLOC) { 1518 1.1.2.2 yamt adlen = sizeof(struct short_ad); 1519 1.1.2.2 yamt } else if (addr_type == UDF_ICB_LONG_ALLOC) { 1520 1.1.2.2 yamt adlen = sizeof(struct long_ad); 1521 1.1.2.2 yamt } 1522 1.1.2.2 yamt 1523 1.1.2.3 yamt /* clean up given long_ad since it can be a synthesized one */ 1524 1.1.2.3 yamt flags = UDF_EXT_FLAGS(udf_rw32(icb->len)); 1525 1.1.2.3 yamt if (flags == UDF_EXT_FREE) { 1526 1.1.2.3 yamt icb->loc.part_num = udf_rw16(0); 1527 1.1.2.3 yamt icb->loc.lb_num = udf_rw32(0); 1528 1.1.2.3 yamt } 1529 1.1.2.3 yamt 1530 1.1.2.2 yamt /* if offset too big, we go to the allocation extensions */ 1531 1.1.2.3 yamt l_ad = udf_rw32(*l_ad_p); 1532 1.1.2.3 yamt offset = (*slot) * adlen; 1533 1.1.2.3 yamt extnr = -1; 1534 1.1.2.3 yamt while (offset >= l_ad) { 1535 1.1.2.3 yamt /* check if our last entry is a redirect */ 1536 1.1.2.3 yamt if (addr_type == UDF_ICB_SHORT_ALLOC) { 1537 1.1.2.3 yamt short_ad = (struct short_ad *) (data_pos + l_ad-adlen); 1538 1.1.2.3 yamt l_icb.len = short_ad->len; 1539 1.1.2.3 yamt l_icb.loc.part_num = udf_node->loc.loc.part_num; 1540 1.1.2.3 yamt l_icb.loc.lb_num = short_ad->lb_num; 1541 1.1.2.3 yamt } else { 1542 1.1.2.3 yamt KASSERT(addr_type == UDF_ICB_LONG_ALLOC); 1543 1.1.2.3 yamt long_ad = (struct long_ad *) (data_pos + l_ad-adlen); 1544 1.1.2.3 yamt l_icb = *long_ad; 1545 1.1.2.3 yamt } 1546 1.1.2.3 yamt flags = UDF_EXT_FLAGS(udf_rw32(l_icb.len)); 1547 1.1.2.3 yamt if (flags != UDF_EXT_REDIRECT) { 1548 1.1.2.3 yamt /* only one past the last one is adressable */ 1549 1.1.2.3 yamt break; 1550 1.1.2.3 yamt } 1551 1.1.2.3 yamt 1552 1.1.2.3 yamt /* advance to next extent */ 1553 1.1.2.3 yamt extnr++; 1554 1.1.2.3 yamt KASSERT(extnr < udf_node->num_extensions); 1555 1.1.2.3 yamt offset = offset - l_ad; 1556 1.1.2.3 yamt 1557 1.1.2.2 yamt ext = udf_node->ext[extnr]; 1558 1.1.2.2 yamt dscr = (union dscrptr *) ext; 1559 1.1.2.2 yamt dscr_size = sizeof(struct alloc_ext_entry) -1; 1560 1.1.2.2 yamt max_l_ad = lb_size - dscr_size; 1561 1.1.2.3 yamt l_ad_p = &ext->l_ad; 1562 1.1.2.3 yamt l_ad = udf_rw32(*l_ad_p); 1563 1.1.2.3 yamt data_pos = (uint8_t *) ext + dscr_size; 1564 1.1.2.2 yamt } 1565 1.1.2.3 yamt DPRINTF(PARANOIDADWLK, ("append, ext %d, offset %d, l_ad %d\n", 1566 1.1.2.3 yamt extnr, offset, udf_rw32(*l_ad_p))); 1567 1.1.2.3 yamt KASSERT(l_ad == udf_rw32(*l_ad_p)); 1568 1.1.2.3 yamt 1569 1.1.2.2 yamt /* offset is offset within the current (E)FE/AED */ 1570 1.1.2.2 yamt l_ad = udf_rw32(*l_ad_p); 1571 1.1.2.2 yamt crclen = udf_rw32(dscr->tag.desc_crc_len); 1572 1.1.2.2 yamt logblks_rec = udf_rw64(*logblks_rec_p); 1573 1.1.2.2 yamt 1574 1.1.2.2 yamt /* overwriting old piece? */ 1575 1.1.2.2 yamt if (offset < l_ad) { 1576 1.1.2.2 yamt /* overwrite entry; compensate for the old element */ 1577 1.1.2.2 yamt if (addr_type == UDF_ICB_SHORT_ALLOC) { 1578 1.1.2.2 yamt short_ad = (struct short_ad *) (data_pos + offset); 1579 1.1.2.2 yamt o_icb.len = short_ad->len; 1580 1.1.2.2 yamt o_icb.loc.part_num = udf_rw16(0); /* ignore */ 1581 1.1.2.2 yamt o_icb.loc.lb_num = short_ad->lb_num; 1582 1.1.2.2 yamt } else if (addr_type == UDF_ICB_LONG_ALLOC) { 1583 1.1.2.2 yamt long_ad = (struct long_ad *) (data_pos + offset); 1584 1.1.2.2 yamt o_icb = *long_ad; 1585 1.1.2.2 yamt } else { 1586 1.1.2.2 yamt panic("Invalid address type in udf_append_adslot\n"); 1587 1.1.2.2 yamt } 1588 1.1.2.2 yamt 1589 1.1.2.2 yamt len = udf_rw32(o_icb.len); 1590 1.1.2.2 yamt if (UDF_EXT_FLAGS(len) == UDF_EXT_ALLOCATED) { 1591 1.1.2.2 yamt /* adjust counts */ 1592 1.1.2.2 yamt len = UDF_EXT_LEN(len); 1593 1.1.2.2 yamt logblks_rec -= (len + lb_size -1) / lb_size; 1594 1.1.2.2 yamt } 1595 1.1.2.2 yamt } 1596 1.1.2.2 yamt 1597 1.1.2.3 yamt /* check if we're not appending a redirection */ 1598 1.1.2.3 yamt flags = UDF_EXT_FLAGS(udf_rw32(icb->len)); 1599 1.1.2.3 yamt KASSERT(flags != UDF_EXT_REDIRECT); 1600 1.1.2.3 yamt 1601 1.1.2.3 yamt /* round down available space */ 1602 1.1.2.3 yamt rest = adlen * ((max_l_ad - offset) / adlen); 1603 1.1.2.2 yamt if (rest <= adlen) { 1604 1.1.2.3 yamt /* have to append aed, see if we already have a spare one */ 1605 1.1.2.3 yamt extnr++; 1606 1.1.2.3 yamt ext = udf_node->ext[extnr]; 1607 1.1.2.3 yamt l_icb = udf_node->ext_loc[extnr]; 1608 1.1.2.3 yamt if (ext == NULL) { 1609 1.1.2.3 yamt DPRINTF(ALLOC,("adding allocation extent %d\n", extnr)); 1610 1.1.2.3 yamt 1611 1.1.2.3 yamt error = udf_pre_allocate_space(ump, UDF_C_NODE, 1, 1612 1.1.2.3 yamt vpart_num, &lmapping); 1613 1.1.2.3 yamt lb_num = lmapping; 1614 1.1.2.3 yamt if (error) 1615 1.1.2.3 yamt return error; 1616 1.1.2.3 yamt 1617 1.1.2.3 yamt /* initialise pointer to location */ 1618 1.1.2.3 yamt memset(&l_icb, 0, sizeof(struct long_ad)); 1619 1.1.2.3 yamt l_icb.len = udf_rw32(lb_size | UDF_EXT_REDIRECT); 1620 1.1.2.3 yamt l_icb.loc.lb_num = udf_rw32(lb_num); 1621 1.1.2.3 yamt l_icb.loc.part_num = udf_rw16(vpart_num); 1622 1.1.2.3 yamt 1623 1.1.2.3 yamt /* create new aed descriptor */ 1624 1.1.2.3 yamt udf_create_logvol_dscr(ump, udf_node, &l_icb, &extdscr); 1625 1.1.2.3 yamt ext = &extdscr->aee; 1626 1.1.2.3 yamt 1627 1.1.2.3 yamt udf_inittag(ump, &ext->tag, TAGID_ALLOCEXTENT, lb_num); 1628 1.1.2.3 yamt dscr_size = sizeof(struct alloc_ext_entry) -1; 1629 1.1.2.3 yamt max_l_ad = lb_size - dscr_size; 1630 1.1.2.3 yamt memset(ext->data, 0, max_l_ad); 1631 1.1.2.3 yamt ext->l_ad = udf_rw32(0); 1632 1.1.2.3 yamt ext->tag.desc_crc_len = 1633 1.1.2.3 yamt udf_rw32(dscr_size - UDF_DESC_TAG_LENGTH); 1634 1.1.2.3 yamt 1635 1.1.2.3 yamt /* declare aed */ 1636 1.1.2.3 yamt udf_node->num_extensions++; 1637 1.1.2.3 yamt udf_node->ext_loc[extnr] = l_icb; 1638 1.1.2.3 yamt udf_node->ext[extnr] = ext; 1639 1.1.2.3 yamt } 1640 1.1.2.3 yamt /* add redirect and adjust l_ad and crclen for old descr */ 1641 1.1.2.3 yamt if (addr_type == UDF_ICB_SHORT_ALLOC) { 1642 1.1.2.3 yamt short_ad = (struct short_ad *) (data_pos + offset); 1643 1.1.2.3 yamt short_ad->len = l_icb.len; 1644 1.1.2.3 yamt short_ad->lb_num = l_icb.loc.lb_num; 1645 1.1.2.3 yamt } else if (addr_type == UDF_ICB_LONG_ALLOC) { 1646 1.1.2.3 yamt long_ad = (struct long_ad *) (data_pos + offset); 1647 1.1.2.3 yamt *long_ad = l_icb; 1648 1.1.2.3 yamt } 1649 1.1.2.3 yamt l_ad += adlen; 1650 1.1.2.3 yamt crclen += adlen; 1651 1.1.2.3 yamt dscr->tag.desc_crc_len = udf_rw32(crclen); 1652 1.1.2.3 yamt *l_ad_p = udf_rw32(l_ad); 1653 1.1.2.3 yamt 1654 1.1.2.3 yamt /* advance to the new extension */ 1655 1.1.2.3 yamt KASSERT(ext != NULL); 1656 1.1.2.3 yamt dscr = (union dscrptr *) ext; 1657 1.1.2.3 yamt dscr_size = sizeof(struct alloc_ext_entry) -1; 1658 1.1.2.3 yamt max_l_ad = lb_size - dscr_size; 1659 1.1.2.3 yamt data_pos = (uint8_t *) dscr + dscr_size; 1660 1.1.2.3 yamt 1661 1.1.2.3 yamt l_ad_p = &ext->l_ad; 1662 1.1.2.3 yamt l_ad = udf_rw32(*l_ad_p); 1663 1.1.2.3 yamt crclen = udf_rw32(dscr->tag.desc_crc_len); 1664 1.1.2.3 yamt offset = 0; 1665 1.1.2.3 yamt 1666 1.1.2.3 yamt /* adjust callees slot count for link insert */ 1667 1.1.2.3 yamt *slot += 1; 1668 1.1.2.2 yamt } 1669 1.1.2.2 yamt 1670 1.1.2.2 yamt /* write out the element */ 1671 1.1.2.3 yamt DPRINTF(PARANOIDADWLK, ("adding element : %p : v %d, lb %d, " 1672 1.1.2.3 yamt "len %d, flags %d\n", data_pos + offset, 1673 1.1.2.3 yamt icb->loc.part_num, icb->loc.lb_num, 1674 1.1.2.3 yamt UDF_EXT_LEN(icb->len), UDF_EXT_FLAGS(icb->len))); 1675 1.1.2.2 yamt if (addr_type == UDF_ICB_SHORT_ALLOC) { 1676 1.1.2.2 yamt short_ad = (struct short_ad *) (data_pos + offset); 1677 1.1.2.2 yamt short_ad->len = icb->len; 1678 1.1.2.2 yamt short_ad->lb_num = icb->loc.lb_num; 1679 1.1.2.2 yamt } else if (addr_type == UDF_ICB_LONG_ALLOC) { 1680 1.1.2.2 yamt long_ad = (struct long_ad *) (data_pos + offset); 1681 1.1.2.2 yamt *long_ad = *icb; 1682 1.1.2.2 yamt } 1683 1.1.2.2 yamt 1684 1.1.2.2 yamt /* adjust logblks recorded count */ 1685 1.1.2.3 yamt flags = UDF_EXT_FLAGS(udf_rw32(icb->len)); 1686 1.1.2.3 yamt if (flags == UDF_EXT_ALLOCATED) 1687 1.1.2.2 yamt logblks_rec += (UDF_EXT_LEN(icb->len) + lb_size -1) / lb_size; 1688 1.1.2.2 yamt *logblks_rec_p = udf_rw64(logblks_rec); 1689 1.1.2.2 yamt 1690 1.1.2.2 yamt /* adjust l_ad and crclen when needed */ 1691 1.1.2.2 yamt if (offset >= l_ad) { 1692 1.1.2.2 yamt l_ad += adlen; 1693 1.1.2.2 yamt crclen += adlen; 1694 1.1.2.2 yamt dscr->tag.desc_crc_len = udf_rw32(crclen); 1695 1.1.2.2 yamt *l_ad_p = udf_rw32(l_ad); 1696 1.1.2.2 yamt } 1697 1.1.2.2 yamt 1698 1.1.2.2 yamt return 0; 1699 1.1.2.2 yamt } 1700 1.1.2.2 yamt 1701 1.1.2.2 yamt /* --------------------------------------------------------------------- */ 1702 1.1.2.2 yamt 1703 1.1.2.3 yamt static void 1704 1.1.2.3 yamt udf_count_alloc_exts(struct udf_node *udf_node) 1705 1.1.2.3 yamt { 1706 1.1.2.3 yamt struct long_ad s_ad; 1707 1.1.2.3 yamt uint32_t lb_num, len, flags; 1708 1.1.2.3 yamt uint16_t vpart_num; 1709 1.1.2.3 yamt int slot, eof; 1710 1.1.2.3 yamt int num_extents, extnr; 1711 1.1.2.3 yamt int lb_size; 1712 1.1.2.3 yamt 1713 1.1.2.3 yamt if (udf_node->num_extensions == 0) 1714 1.1.2.3 yamt return; 1715 1.1.2.3 yamt 1716 1.1.2.3 yamt lb_size = udf_rw32(udf_node->ump->logical_vol->lb_size); 1717 1.1.2.3 yamt /* count number of allocation extents in use */ 1718 1.1.2.3 yamt num_extents = 0; 1719 1.1.2.3 yamt slot = 0; 1720 1.1.2.3 yamt for (;;) { 1721 1.1.2.3 yamt udf_get_adslot(udf_node, slot, &s_ad, &eof); 1722 1.1.2.3 yamt if (eof) 1723 1.1.2.3 yamt break; 1724 1.1.2.3 yamt len = udf_rw32(s_ad.len); 1725 1.1.2.3 yamt flags = UDF_EXT_FLAGS(len); 1726 1.1.2.3 yamt 1727 1.1.2.3 yamt if (flags == UDF_EXT_REDIRECT) 1728 1.1.2.3 yamt num_extents++; 1729 1.1.2.3 yamt 1730 1.1.2.3 yamt slot++; 1731 1.1.2.3 yamt } 1732 1.1.2.3 yamt 1733 1.1.2.3 yamt DPRINTF(ALLOC, ("udf_count_alloc_ext counted %d live extents\n", 1734 1.1.2.3 yamt num_extents)); 1735 1.1.2.3 yamt 1736 1.1.2.3 yamt /* XXX choice: we could delay freeing them on node writeout */ 1737 1.1.2.3 yamt /* free excess entries */ 1738 1.1.2.3 yamt extnr = num_extents; 1739 1.1.2.3 yamt for (;extnr < udf_node->num_extensions; extnr++) { 1740 1.1.2.3 yamt DPRINTF(ALLOC, ("freeing alloc ext %d\n", extnr)); 1741 1.1.2.3 yamt /* free dscriptor */ 1742 1.1.2.3 yamt s_ad = udf_node->ext_loc[extnr]; 1743 1.1.2.3 yamt udf_free_logvol_dscr(udf_node->ump, &s_ad, 1744 1.1.2.3 yamt udf_node->ext[extnr]); 1745 1.1.2.3 yamt udf_node->ext[extnr] = NULL; 1746 1.1.2.3 yamt 1747 1.1.2.3 yamt /* free disc space */ 1748 1.1.2.3 yamt lb_num = udf_rw32(s_ad.loc.lb_num); 1749 1.1.2.3 yamt vpart_num = udf_rw16(s_ad.loc.part_num); 1750 1.1.2.3 yamt udf_free_allocated_space(udf_node->ump, lb_num, vpart_num, 1); 1751 1.1.2.3 yamt 1752 1.1.2.3 yamt memset(&udf_node->ext_loc[extnr], 0, sizeof(struct long_ad)); 1753 1.1.2.3 yamt } 1754 1.1.2.3 yamt 1755 1.1.2.3 yamt /* set our new number of allocation extents */ 1756 1.1.2.3 yamt udf_node->num_extensions = num_extents; 1757 1.1.2.3 yamt } 1758 1.1.2.3 yamt 1759 1.1.2.3 yamt 1760 1.1.2.3 yamt /* --------------------------------------------------------------------- */ 1761 1.1.2.3 yamt 1762 1.1.2.2 yamt /* 1763 1.1.2.2 yamt * Adjust the node's allocation descriptors to reflect the new mapping; do 1764 1.1.2.2 yamt * take note that we might glue to existing allocation descriptors. 1765 1.1.2.2 yamt * 1766 1.1.2.2 yamt * XXX Note there can only be one allocation being recorded/mount; maybe 1767 1.1.2.2 yamt * explicit allocation in shedule thread? 1768 1.1.2.2 yamt */ 1769 1.1.2.2 yamt 1770 1.1.2.2 yamt static void 1771 1.1.2.2 yamt udf_record_allocation_in_node(struct udf_mount *ump, struct buf *buf, 1772 1.1.2.2 yamt uint16_t vpart_num, uint64_t *mapping, struct long_ad *node_ad_cpy) 1773 1.1.2.2 yamt { 1774 1.1.2.2 yamt struct vnode *vp = buf->b_vp; 1775 1.1.2.2 yamt struct udf_node *udf_node = VTOI(vp); 1776 1.1.2.2 yamt struct file_entry *fe; 1777 1.1.2.2 yamt struct extfile_entry *efe; 1778 1.1.2.2 yamt struct icb_tag *icbtag; 1779 1.1.2.2 yamt struct long_ad s_ad, c_ad; 1780 1.1.2.2 yamt uint64_t inflen, from, till; 1781 1.1.2.2 yamt uint64_t foffset, end_foffset, restart_foffset; 1782 1.1.2.2 yamt uint64_t orig_inflen, orig_lbrec, new_inflen, new_lbrec; 1783 1.1.2.2 yamt uint32_t num_lb, len, flags, lb_num; 1784 1.1.2.2 yamt uint32_t run_start; 1785 1.1.2.3 yamt uint32_t slot_offset, replace_len, replace; 1786 1.1.2.2 yamt int addr_type, icbflags; 1787 1.1.2.3 yamt // int udf_c_type = buf->b_udf_c_type; 1788 1.1.2.2 yamt int lb_size, run_length, eof; 1789 1.1.2.2 yamt int slot, cpy_slot, cpy_slots, restart_slot; 1790 1.1.2.2 yamt int error; 1791 1.1.2.2 yamt 1792 1.1.2.2 yamt DPRINTF(ALLOC, ("udf_record_allocation_in_node\n")); 1793 1.1.2.2 yamt 1794 1.1.2.3 yamt #if 0 1795 1.1.2.3 yamt /* XXX disable sanity check for now */ 1796 1.1.2.2 yamt /* sanity check ... should be panic ? */ 1797 1.1.2.2 yamt if ((udf_c_type != UDF_C_USERDATA) && (udf_c_type != UDF_C_FIDS)) 1798 1.1.2.2 yamt return; 1799 1.1.2.3 yamt #endif 1800 1.1.2.2 yamt 1801 1.1.2.2 yamt lb_size = udf_rw32(udf_node->ump->logical_vol->lb_size); 1802 1.1.2.2 yamt 1803 1.1.2.2 yamt /* do the job */ 1804 1.1.2.2 yamt UDF_LOCK_NODE(udf_node, 0); /* XXX can deadlock ? */ 1805 1.1.2.3 yamt udf_node_sanity_check(udf_node, &orig_inflen, &orig_lbrec); 1806 1.1.2.2 yamt 1807 1.1.2.2 yamt fe = udf_node->fe; 1808 1.1.2.2 yamt efe = udf_node->efe; 1809 1.1.2.2 yamt if (fe) { 1810 1.1.2.2 yamt icbtag = &fe->icbtag; 1811 1.1.2.2 yamt inflen = udf_rw64(fe->inf_len); 1812 1.1.2.2 yamt } else { 1813 1.1.2.2 yamt icbtag = &efe->icbtag; 1814 1.1.2.2 yamt inflen = udf_rw64(efe->inf_len); 1815 1.1.2.2 yamt } 1816 1.1.2.2 yamt 1817 1.1.2.2 yamt /* do check if `till' is not past file information length */ 1818 1.1.2.2 yamt from = buf->b_lblkno * lb_size; 1819 1.1.2.2 yamt till = MIN(inflen, from + buf->b_resid); 1820 1.1.2.2 yamt 1821 1.1.2.2 yamt num_lb = (till - from + lb_size -1) / lb_size; 1822 1.1.2.2 yamt 1823 1.1.2.3 yamt DPRINTF(ALLOC, ("record allocation from %"PRIu64" + %d\n", from, buf->b_bcount)); 1824 1.1.2.2 yamt 1825 1.1.2.2 yamt icbflags = udf_rw16(icbtag->flags); 1826 1.1.2.2 yamt addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 1827 1.1.2.2 yamt 1828 1.1.2.2 yamt if (addr_type == UDF_ICB_INTERN_ALLOC) { 1829 1.1.2.2 yamt /* nothing to do */ 1830 1.1.2.2 yamt /* XXX clean up rest of node? just in case? */ 1831 1.1.2.2 yamt UDF_UNLOCK_NODE(udf_node, 0); 1832 1.1.2.2 yamt return; 1833 1.1.2.2 yamt } 1834 1.1.2.2 yamt 1835 1.1.2.2 yamt slot = 0; 1836 1.1.2.2 yamt cpy_slot = 0; 1837 1.1.2.2 yamt foffset = 0; 1838 1.1.2.2 yamt 1839 1.1.2.2 yamt /* 1) copy till first overlap piece to the rewrite buffer */ 1840 1.1.2.2 yamt for (;;) { 1841 1.1.2.2 yamt udf_get_adslot(udf_node, slot, &s_ad, &eof); 1842 1.1.2.2 yamt if (eof) { 1843 1.1.2.2 yamt DPRINTF(WRITE, 1844 1.1.2.2 yamt ("Record allocation in node " 1845 1.1.2.2 yamt "failed: encountered EOF\n")); 1846 1.1.2.2 yamt UDF_UNLOCK_NODE(udf_node, 0); 1847 1.1.2.2 yamt buf->b_error = EINVAL; 1848 1.1.2.2 yamt return; 1849 1.1.2.2 yamt } 1850 1.1.2.2 yamt len = udf_rw32(s_ad.len); 1851 1.1.2.2 yamt flags = UDF_EXT_FLAGS(len); 1852 1.1.2.2 yamt len = UDF_EXT_LEN(len); 1853 1.1.2.2 yamt 1854 1.1.2.2 yamt if (flags == UDF_EXT_REDIRECT) { 1855 1.1.2.2 yamt slot++; 1856 1.1.2.2 yamt continue; 1857 1.1.2.2 yamt } 1858 1.1.2.2 yamt 1859 1.1.2.2 yamt end_foffset = foffset + len; 1860 1.1.2.2 yamt if (end_foffset > from) 1861 1.1.2.2 yamt break; /* found */ 1862 1.1.2.2 yamt 1863 1.1.2.2 yamt node_ad_cpy[cpy_slot++] = s_ad; 1864 1.1.2.2 yamt 1865 1.1.2.2 yamt DPRINTF(ALLOC, ("\t1: vp %d, lb %d, len %d, flags %d " 1866 1.1.2.2 yamt "-> stack\n", 1867 1.1.2.2 yamt udf_rw16(s_ad.loc.part_num), 1868 1.1.2.2 yamt udf_rw32(s_ad.loc.lb_num), 1869 1.1.2.2 yamt UDF_EXT_LEN(udf_rw32(s_ad.len)), 1870 1.1.2.2 yamt UDF_EXT_FLAGS(udf_rw32(s_ad.len)) >> 30)); 1871 1.1.2.2 yamt 1872 1.1.2.2 yamt foffset = end_foffset; 1873 1.1.2.2 yamt slot++; 1874 1.1.2.2 yamt } 1875 1.1.2.2 yamt restart_slot = slot; 1876 1.1.2.2 yamt restart_foffset = foffset; 1877 1.1.2.2 yamt 1878 1.1.2.2 yamt /* 2) trunc overlapping slot at overlap and copy it */ 1879 1.1.2.2 yamt slot_offset = from - foffset; 1880 1.1.2.2 yamt if (slot_offset > 0) { 1881 1.1.2.2 yamt DPRINTF(ALLOC, ("\tslot_offset = %d, flags = %d (%d)\n", 1882 1.1.2.2 yamt slot_offset, flags >> 30, flags)); 1883 1.1.2.2 yamt 1884 1.1.2.2 yamt s_ad.len = udf_rw32(slot_offset | flags); 1885 1.1.2.2 yamt node_ad_cpy[cpy_slot++] = s_ad; 1886 1.1.2.2 yamt 1887 1.1.2.2 yamt DPRINTF(ALLOC, ("\t2: vp %d, lb %d, len %d, flags %d " 1888 1.1.2.2 yamt "-> stack\n", 1889 1.1.2.2 yamt udf_rw16(s_ad.loc.part_num), 1890 1.1.2.2 yamt udf_rw32(s_ad.loc.lb_num), 1891 1.1.2.2 yamt UDF_EXT_LEN(udf_rw32(s_ad.len)), 1892 1.1.2.2 yamt UDF_EXT_FLAGS(udf_rw32(s_ad.len)) >> 30)); 1893 1.1.2.2 yamt } 1894 1.1.2.2 yamt foffset += slot_offset; 1895 1.1.2.2 yamt 1896 1.1.2.2 yamt /* 3) insert new mappings */ 1897 1.1.2.2 yamt memset(&s_ad, 0, sizeof(struct long_ad)); 1898 1.1.2.2 yamt lb_num = 0; 1899 1.1.2.2 yamt for (lb_num = 0; lb_num < num_lb; lb_num++) { 1900 1.1.2.2 yamt run_start = mapping[lb_num]; 1901 1.1.2.2 yamt run_length = 1; 1902 1.1.2.2 yamt while (lb_num < num_lb-1) { 1903 1.1.2.2 yamt if (mapping[lb_num+1] != mapping[lb_num]+1) 1904 1.1.2.2 yamt if (mapping[lb_num+1] != mapping[lb_num]) 1905 1.1.2.2 yamt break; 1906 1.1.2.2 yamt run_length++; 1907 1.1.2.2 yamt lb_num++; 1908 1.1.2.2 yamt } 1909 1.1.2.2 yamt /* insert slot for this mapping */ 1910 1.1.2.2 yamt len = run_length * lb_size; 1911 1.1.2.2 yamt 1912 1.1.2.2 yamt /* bounds checking */ 1913 1.1.2.2 yamt if (foffset + len > till) 1914 1.1.2.2 yamt len = till - foffset; 1915 1.1.2.2 yamt KASSERT(foffset + len <= inflen); 1916 1.1.2.2 yamt 1917 1.1.2.2 yamt s_ad.len = udf_rw32(len | UDF_EXT_ALLOCATED); 1918 1.1.2.2 yamt s_ad.loc.part_num = udf_rw16(vpart_num); 1919 1.1.2.2 yamt s_ad.loc.lb_num = udf_rw32(run_start); 1920 1.1.2.2 yamt 1921 1.1.2.2 yamt foffset += len; 1922 1.1.2.2 yamt 1923 1.1.2.2 yamt /* paranoia */ 1924 1.1.2.2 yamt if (len == 0) { 1925 1.1.2.2 yamt DPRINTF(WRITE, 1926 1.1.2.2 yamt ("Record allocation in node " 1927 1.1.2.2 yamt "failed: insert failed\n")); 1928 1.1.2.2 yamt UDF_UNLOCK_NODE(udf_node, 0); 1929 1.1.2.2 yamt buf->b_error = EINVAL; 1930 1.1.2.2 yamt return; 1931 1.1.2.2 yamt } 1932 1.1.2.2 yamt node_ad_cpy[cpy_slot++] = s_ad; 1933 1.1.2.2 yamt 1934 1.1.2.2 yamt DPRINTF(ALLOC, ("\t3: insert new mapping vp %d lb %d, len %d, " 1935 1.1.2.2 yamt "flags %d -> stack\n", 1936 1.1.2.2 yamt udf_rw16(s_ad.loc.part_num), udf_rw32(s_ad.loc.lb_num), 1937 1.1.2.2 yamt UDF_EXT_LEN(udf_rw32(s_ad.len)), 1938 1.1.2.2 yamt UDF_EXT_FLAGS(udf_rw32(s_ad.len)) >> 30)); 1939 1.1.2.2 yamt } 1940 1.1.2.2 yamt 1941 1.1.2.2 yamt /* 4) pop replaced length */ 1942 1.1.2.3 yamt slot = restart_slot; 1943 1.1.2.2 yamt foffset = restart_foffset; 1944 1.1.2.2 yamt 1945 1.1.2.3 yamt replace_len = till - foffset; /* total amount of bytes to pop */ 1946 1.1.2.3 yamt slot_offset = from - foffset; /* offset in first encounted slot */ 1947 1.1.2.3 yamt KASSERT((slot_offset % lb_size) == 0); 1948 1.1.2.3 yamt 1949 1.1.2.2 yamt for (;;) { 1950 1.1.2.2 yamt udf_get_adslot(udf_node, slot, &s_ad, &eof); 1951 1.1.2.2 yamt if (eof) 1952 1.1.2.2 yamt break; 1953 1.1.2.2 yamt 1954 1.1.2.2 yamt len = udf_rw32(s_ad.len); 1955 1.1.2.2 yamt flags = UDF_EXT_FLAGS(len); 1956 1.1.2.2 yamt len = UDF_EXT_LEN(len); 1957 1.1.2.2 yamt lb_num = udf_rw32(s_ad.loc.lb_num); 1958 1.1.2.2 yamt 1959 1.1.2.2 yamt if (flags == UDF_EXT_REDIRECT) { 1960 1.1.2.2 yamt slot++; 1961 1.1.2.2 yamt continue; 1962 1.1.2.2 yamt } 1963 1.1.2.2 yamt 1964 1.1.2.3 yamt DPRINTF(ALLOC, ("\t4i: got slot %d, slot_offset %d, " 1965 1.1.2.3 yamt "replace_len %d, " 1966 1.1.2.3 yamt "vp %d, lb %d, len %d, flags %d\n", 1967 1.1.2.3 yamt slot, slot_offset, replace_len, 1968 1.1.2.3 yamt udf_rw16(s_ad.loc.part_num), 1969 1.1.2.2 yamt udf_rw32(s_ad.loc.lb_num), 1970 1.1.2.2 yamt UDF_EXT_LEN(udf_rw32(s_ad.len)), 1971 1.1.2.2 yamt UDF_EXT_FLAGS(udf_rw32(s_ad.len)) >> 30)); 1972 1.1.2.2 yamt 1973 1.1.2.3 yamt /* adjust for slot offset */ 1974 1.1.2.3 yamt if (slot_offset) { 1975 1.1.2.3 yamt DPRINTF(ALLOC, ("\t4s: skipping %d\n", slot_offset)); 1976 1.1.2.3 yamt lb_num += slot_offset / lb_size; 1977 1.1.2.3 yamt len -= slot_offset; 1978 1.1.2.3 yamt foffset += slot_offset; 1979 1.1.2.3 yamt replace_len -= slot_offset; 1980 1.1.2.3 yamt 1981 1.1.2.3 yamt /* mark adjusted */ 1982 1.1.2.3 yamt slot_offset = 0; 1983 1.1.2.3 yamt } 1984 1.1.2.3 yamt 1985 1.1.2.3 yamt /* advance for (the rest of) this slot */ 1986 1.1.2.3 yamt replace = MIN(len, replace_len); 1987 1.1.2.3 yamt DPRINTF(ALLOC, ("\t4d: replacing %d\n", replace)); 1988 1.1.2.3 yamt 1989 1.1.2.3 yamt /* advance for this slot */ 1990 1.1.2.3 yamt if (replace) { 1991 1.1.2.3 yamt /* note: dont round DOWN on num_lb since we then 1992 1.1.2.3 yamt * forget the last partial one */ 1993 1.1.2.3 yamt num_lb = (replace + lb_size - 1) / lb_size; 1994 1.1.2.3 yamt if (flags != UDF_EXT_FREE) { 1995 1.1.2.3 yamt udf_free_allocated_space(ump, lb_num, 1996 1.1.2.3 yamt udf_rw16(s_ad.loc.part_num), num_lb); 1997 1.1.2.2 yamt } 1998 1.1.2.3 yamt lb_num += num_lb; 1999 1.1.2.3 yamt len -= replace; 2000 1.1.2.3 yamt foffset += replace; 2001 1.1.2.3 yamt replace_len -= replace; 2002 1.1.2.3 yamt } 2003 1.1.2.2 yamt 2004 1.1.2.3 yamt /* do we have a slot tail ? */ 2005 1.1.2.2 yamt if (len) { 2006 1.1.2.3 yamt KASSERT(foffset % lb_size == 0); 2007 1.1.2.2 yamt 2008 1.1.2.2 yamt /* we arrived at our point, push remainder */ 2009 1.1.2.2 yamt s_ad.len = udf_rw32(len | flags); 2010 1.1.2.2 yamt s_ad.loc.lb_num = udf_rw32(lb_num); 2011 1.1.2.3 yamt if (flags == UDF_EXT_FREE) 2012 1.1.2.3 yamt s_ad.loc.lb_num = udf_rw32(0); 2013 1.1.2.2 yamt node_ad_cpy[cpy_slot++] = s_ad; 2014 1.1.2.2 yamt foffset += len; 2015 1.1.2.2 yamt slot++; 2016 1.1.2.2 yamt 2017 1.1.2.2 yamt DPRINTF(ALLOC, ("\t4: vp %d, lb %d, len %d, flags %d " 2018 1.1.2.2 yamt "-> stack\n", 2019 1.1.2.2 yamt udf_rw16(s_ad.loc.part_num), 2020 1.1.2.2 yamt udf_rw32(s_ad.loc.lb_num), 2021 1.1.2.2 yamt UDF_EXT_LEN(udf_rw32(s_ad.len)), 2022 1.1.2.2 yamt UDF_EXT_FLAGS(udf_rw32(s_ad.len)) >> 30)); 2023 1.1.2.2 yamt break; 2024 1.1.2.2 yamt } 2025 1.1.2.3 yamt 2026 1.1.2.2 yamt slot++; 2027 1.1.2.2 yamt } 2028 1.1.2.2 yamt 2029 1.1.2.2 yamt /* 5) copy remainder */ 2030 1.1.2.2 yamt for (;;) { 2031 1.1.2.2 yamt udf_get_adslot(udf_node, slot, &s_ad, &eof); 2032 1.1.2.2 yamt if (eof) 2033 1.1.2.2 yamt break; 2034 1.1.2.2 yamt 2035 1.1.2.2 yamt len = udf_rw32(s_ad.len); 2036 1.1.2.2 yamt flags = UDF_EXT_FLAGS(len); 2037 1.1.2.2 yamt len = UDF_EXT_LEN(len); 2038 1.1.2.2 yamt 2039 1.1.2.2 yamt if (flags == UDF_EXT_REDIRECT) { 2040 1.1.2.2 yamt slot++; 2041 1.1.2.2 yamt continue; 2042 1.1.2.2 yamt } 2043 1.1.2.2 yamt 2044 1.1.2.2 yamt node_ad_cpy[cpy_slot++] = s_ad; 2045 1.1.2.2 yamt 2046 1.1.2.2 yamt DPRINTF(ALLOC, ("\t5: insert new mapping " 2047 1.1.2.2 yamt "vp %d lb %d, len %d, flags %d " 2048 1.1.2.2 yamt "-> stack\n", 2049 1.1.2.2 yamt udf_rw16(s_ad.loc.part_num), 2050 1.1.2.2 yamt udf_rw32(s_ad.loc.lb_num), 2051 1.1.2.2 yamt UDF_EXT_LEN(udf_rw32(s_ad.len)), 2052 1.1.2.2 yamt UDF_EXT_FLAGS(udf_rw32(s_ad.len)) >> 30)); 2053 1.1.2.2 yamt 2054 1.1.2.2 yamt slot++; 2055 1.1.2.2 yamt } 2056 1.1.2.2 yamt 2057 1.1.2.2 yamt /* 6) reset node descriptors */ 2058 1.1.2.2 yamt udf_wipe_adslots(udf_node); 2059 1.1.2.2 yamt 2060 1.1.2.2 yamt /* 7) copy back extents; merge when possible. Recounting on the fly */ 2061 1.1.2.2 yamt cpy_slots = cpy_slot; 2062 1.1.2.2 yamt 2063 1.1.2.2 yamt c_ad = node_ad_cpy[0]; 2064 1.1.2.2 yamt slot = 0; 2065 1.1.2.2 yamt DPRINTF(ALLOC, ("\t7s: stack -> got mapping vp %d " 2066 1.1.2.2 yamt "lb %d, len %d, flags %d\n", 2067 1.1.2.2 yamt udf_rw16(c_ad.loc.part_num), 2068 1.1.2.2 yamt udf_rw32(c_ad.loc.lb_num), 2069 1.1.2.2 yamt UDF_EXT_LEN(udf_rw32(c_ad.len)), 2070 1.1.2.2 yamt UDF_EXT_FLAGS(udf_rw32(c_ad.len)) >> 30)); 2071 1.1.2.2 yamt 2072 1.1.2.2 yamt for (cpy_slot = 1; cpy_slot < cpy_slots; cpy_slot++) { 2073 1.1.2.2 yamt s_ad = node_ad_cpy[cpy_slot]; 2074 1.1.2.2 yamt 2075 1.1.2.2 yamt DPRINTF(ALLOC, ("\t7i: stack -> got mapping vp %d " 2076 1.1.2.2 yamt "lb %d, len %d, flags %d\n", 2077 1.1.2.2 yamt udf_rw16(s_ad.loc.part_num), 2078 1.1.2.2 yamt udf_rw32(s_ad.loc.lb_num), 2079 1.1.2.2 yamt UDF_EXT_LEN(udf_rw32(s_ad.len)), 2080 1.1.2.2 yamt UDF_EXT_FLAGS(udf_rw32(s_ad.len)) >> 30)); 2081 1.1.2.2 yamt 2082 1.1.2.2 yamt /* see if we can merge */ 2083 1.1.2.2 yamt if (udf_ads_merge(lb_size, &c_ad, &s_ad)) { 2084 1.1.2.2 yamt /* not mergable (anymore) */ 2085 1.1.2.2 yamt DPRINTF(ALLOC, ("\t7: appending vp %d lb %d, " 2086 1.1.2.2 yamt "len %d, flags %d\n", 2087 1.1.2.2 yamt udf_rw16(c_ad.loc.part_num), 2088 1.1.2.2 yamt udf_rw32(c_ad.loc.lb_num), 2089 1.1.2.2 yamt UDF_EXT_LEN(udf_rw32(c_ad.len)), 2090 1.1.2.2 yamt UDF_EXT_FLAGS(udf_rw32(c_ad.len)) >> 30)); 2091 1.1.2.2 yamt 2092 1.1.2.3 yamt error = udf_append_adslot(udf_node, &slot, &c_ad); 2093 1.1.2.2 yamt if (error) { 2094 1.1.2.2 yamt buf->b_error = error; 2095 1.1.2.2 yamt goto out; 2096 1.1.2.2 yamt } 2097 1.1.2.2 yamt c_ad = s_ad; 2098 1.1.2.2 yamt slot++; 2099 1.1.2.2 yamt } 2100 1.1.2.2 yamt } 2101 1.1.2.2 yamt 2102 1.1.2.2 yamt /* 8) push rest slot (if any) */ 2103 1.1.2.2 yamt if (UDF_EXT_LEN(c_ad.len) > 0) { 2104 1.1.2.2 yamt DPRINTF(ALLOC, ("\t8: last append vp %d lb %d, " 2105 1.1.2.2 yamt "len %d, flags %d\n", 2106 1.1.2.2 yamt udf_rw16(c_ad.loc.part_num), 2107 1.1.2.2 yamt udf_rw32(c_ad.loc.lb_num), 2108 1.1.2.2 yamt UDF_EXT_LEN(udf_rw32(c_ad.len)), 2109 1.1.2.2 yamt UDF_EXT_FLAGS(udf_rw32(c_ad.len)) >> 30)); 2110 1.1.2.2 yamt 2111 1.1.2.3 yamt error = udf_append_adslot(udf_node, &slot, &c_ad); 2112 1.1.2.2 yamt if (error) { 2113 1.1.2.2 yamt buf->b_error = error; 2114 1.1.2.2 yamt goto out; 2115 1.1.2.2 yamt } 2116 1.1.2.2 yamt } 2117 1.1.2.2 yamt 2118 1.1.2.2 yamt out: 2119 1.1.2.3 yamt udf_count_alloc_exts(udf_node); 2120 1.1.2.2 yamt 2121 1.1.2.3 yamt /* the node's descriptors should now be sane */ 2122 1.1.2.2 yamt udf_node_sanity_check(udf_node, &new_inflen, &new_lbrec); 2123 1.1.2.3 yamt UDF_UNLOCK_NODE(udf_node, 0); 2124 1.1.2.2 yamt 2125 1.1.2.2 yamt KASSERT(orig_inflen == new_inflen); 2126 1.1.2.2 yamt KASSERT(new_lbrec >= orig_lbrec); 2127 1.1.2.2 yamt 2128 1.1.2.2 yamt return; 2129 1.1.2.2 yamt } 2130 1.1.2.2 yamt 2131 1.1.2.2 yamt /* --------------------------------------------------------------------- */ 2132 1.1.2.2 yamt 2133 1.1.2.2 yamt int 2134 1.1.2.2 yamt udf_grow_node(struct udf_node *udf_node, uint64_t new_size) 2135 1.1.2.2 yamt { 2136 1.1.2.2 yamt union dscrptr *dscr; 2137 1.1.2.2 yamt struct vnode *vp = udf_node->vnode; 2138 1.1.2.2 yamt struct udf_mount *ump = udf_node->ump; 2139 1.1.2.2 yamt struct file_entry *fe; 2140 1.1.2.2 yamt struct extfile_entry *efe; 2141 1.1.2.2 yamt struct icb_tag *icbtag; 2142 1.1.2.2 yamt struct long_ad c_ad, s_ad; 2143 1.1.2.2 yamt uint64_t size_diff, old_size, inflen, objsize, chunk, append_len; 2144 1.1.2.2 yamt uint64_t foffset, end_foffset; 2145 1.1.2.2 yamt uint64_t orig_inflen, orig_lbrec, new_inflen, new_lbrec; 2146 1.1.2.2 yamt uint32_t lb_size, dscr_size, crclen, lastblock_grow; 2147 1.1.2.3 yamt uint32_t icbflags, len, flags, max_len; 2148 1.1.2.2 yamt uint32_t max_l_ad, l_ad, l_ea; 2149 1.1.2.3 yamt uint16_t my_part, dst_part; 2150 1.1.2.2 yamt uint8_t *data_pos, *evacuated_data; 2151 1.1.2.3 yamt int addr_type; 2152 1.1.2.2 yamt int slot, cpy_slot; 2153 1.1.2.3 yamt int isdir, eof, error; 2154 1.1.2.2 yamt 2155 1.1.2.2 yamt DPRINTF(ALLOC, ("udf_grow_node\n")); 2156 1.1.2.2 yamt 2157 1.1.2.2 yamt UDF_LOCK_NODE(udf_node, 0); 2158 1.1.2.3 yamt udf_node_sanity_check(udf_node, &orig_inflen, &orig_lbrec); 2159 1.1.2.3 yamt 2160 1.1.2.2 yamt lb_size = udf_rw32(ump->logical_vol->lb_size); 2161 1.1.2.2 yamt max_len = ((UDF_EXT_MAXLEN / lb_size) * lb_size); 2162 1.1.2.2 yamt 2163 1.1.2.2 yamt fe = udf_node->fe; 2164 1.1.2.2 yamt efe = udf_node->efe; 2165 1.1.2.2 yamt if (fe) { 2166 1.1.2.2 yamt dscr = (union dscrptr *) fe; 2167 1.1.2.2 yamt icbtag = &fe->icbtag; 2168 1.1.2.2 yamt inflen = udf_rw64(fe->inf_len); 2169 1.1.2.2 yamt objsize = inflen; 2170 1.1.2.2 yamt dscr_size = sizeof(struct file_entry) -1; 2171 1.1.2.2 yamt l_ea = udf_rw32(fe->l_ea); 2172 1.1.2.2 yamt l_ad = udf_rw32(fe->l_ad); 2173 1.1.2.2 yamt } else { 2174 1.1.2.2 yamt dscr = (union dscrptr *) efe; 2175 1.1.2.2 yamt icbtag = &efe->icbtag; 2176 1.1.2.2 yamt inflen = udf_rw64(efe->inf_len); 2177 1.1.2.2 yamt objsize = udf_rw64(efe->obj_size); 2178 1.1.2.2 yamt dscr_size = sizeof(struct extfile_entry) -1; 2179 1.1.2.2 yamt l_ea = udf_rw32(efe->l_ea); 2180 1.1.2.2 yamt l_ad = udf_rw32(efe->l_ad); 2181 1.1.2.2 yamt } 2182 1.1.2.2 yamt data_pos = (uint8_t *) dscr + dscr_size + l_ea; 2183 1.1.2.2 yamt max_l_ad = lb_size - dscr_size - l_ea; 2184 1.1.2.2 yamt 2185 1.1.2.2 yamt icbflags = udf_rw16(icbtag->flags); 2186 1.1.2.2 yamt addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 2187 1.1.2.2 yamt 2188 1.1.2.2 yamt old_size = inflen; 2189 1.1.2.2 yamt size_diff = new_size - old_size; 2190 1.1.2.2 yamt 2191 1.1.2.2 yamt DPRINTF(ALLOC, ("\tfrom %"PRIu64" to %"PRIu64"\n", old_size, new_size)); 2192 1.1.2.2 yamt 2193 1.1.2.2 yamt evacuated_data = NULL; 2194 1.1.2.2 yamt if (addr_type == UDF_ICB_INTERN_ALLOC) { 2195 1.1.2.2 yamt if (l_ad + size_diff <= max_l_ad) { 2196 1.1.2.2 yamt /* only reflect size change directly in the node */ 2197 1.1.2.2 yamt inflen += size_diff; 2198 1.1.2.2 yamt objsize += size_diff; 2199 1.1.2.2 yamt l_ad += size_diff; 2200 1.1.2.2 yamt crclen = dscr_size - UDF_DESC_TAG_LENGTH + l_ea + l_ad; 2201 1.1.2.2 yamt if (fe) { 2202 1.1.2.2 yamt fe->inf_len = udf_rw64(inflen); 2203 1.1.2.2 yamt fe->l_ad = udf_rw32(l_ad); 2204 1.1.2.2 yamt fe->tag.desc_crc_len = udf_rw32(crclen); 2205 1.1.2.2 yamt } else { 2206 1.1.2.2 yamt efe->inf_len = udf_rw64(inflen); 2207 1.1.2.2 yamt efe->obj_size = udf_rw64(objsize); 2208 1.1.2.2 yamt efe->l_ad = udf_rw32(l_ad); 2209 1.1.2.2 yamt efe->tag.desc_crc_len = udf_rw32(crclen); 2210 1.1.2.2 yamt } 2211 1.1.2.2 yamt error = 0; 2212 1.1.2.2 yamt 2213 1.1.2.2 yamt /* set new size for uvm */ 2214 1.1.2.2 yamt uvm_vnp_setsize(vp, old_size); 2215 1.1.2.2 yamt uvm_vnp_setwritesize(vp, new_size); 2216 1.1.2.2 yamt 2217 1.1.2.2 yamt #if 0 2218 1.1.2.2 yamt /* zero append space in buffer */ 2219 1.1.2.2 yamt uvm_vnp_zerorange(vp, old_size, new_size - old_size); 2220 1.1.2.2 yamt #endif 2221 1.1.2.2 yamt 2222 1.1.2.3 yamt udf_node_sanity_check(udf_node, &new_inflen, &new_lbrec); 2223 1.1.2.3 yamt 2224 1.1.2.2 yamt /* unlock */ 2225 1.1.2.2 yamt UDF_UNLOCK_NODE(udf_node, 0); 2226 1.1.2.2 yamt 2227 1.1.2.2 yamt KASSERT(new_inflen == orig_inflen + size_diff); 2228 1.1.2.2 yamt KASSERT(new_lbrec == orig_lbrec); 2229 1.1.2.2 yamt KASSERT(new_lbrec == 0); 2230 1.1.2.2 yamt return 0; 2231 1.1.2.2 yamt } 2232 1.1.2.2 yamt 2233 1.1.2.2 yamt DPRINTF(ALLOC, ("\tCONVERT from internal\n")); 2234 1.1.2.2 yamt 2235 1.1.2.2 yamt if (old_size > 0) { 2236 1.1.2.2 yamt /* allocate some space and copy in the stuff to keep */ 2237 1.1.2.2 yamt evacuated_data = malloc(lb_size, M_UDFTEMP, M_WAITOK); 2238 1.1.2.2 yamt memset(evacuated_data, 0, lb_size); 2239 1.1.2.2 yamt 2240 1.1.2.2 yamt /* node is locked, so safe to exit mutex */ 2241 1.1.2.2 yamt UDF_UNLOCK_NODE(udf_node, 0); 2242 1.1.2.2 yamt 2243 1.1.2.2 yamt /* read in using the `normal' vn_rdwr() */ 2244 1.1.2.2 yamt error = vn_rdwr(UIO_READ, udf_node->vnode, 2245 1.1.2.2 yamt evacuated_data, old_size, 0, 2246 1.1.2.2 yamt UIO_SYSSPACE, IO_ALTSEMANTICS | IO_NODELOCKED, 2247 1.1.2.2 yamt FSCRED, NULL, NULL); 2248 1.1.2.2 yamt 2249 1.1.2.2 yamt /* enter again */ 2250 1.1.2.2 yamt UDF_LOCK_NODE(udf_node, 0); 2251 1.1.2.2 yamt } 2252 1.1.2.2 yamt 2253 1.1.2.3 yamt /* convert to a normal alloc and select type */ 2254 1.1.2.3 yamt isdir = (vp->v_type == VDIR); 2255 1.1.2.3 yamt my_part = udf_rw16(udf_node->loc.loc.part_num); 2256 1.1.2.3 yamt dst_part = isdir? ump->fids_part : ump->data_part; 2257 1.1.2.3 yamt addr_type = UDF_ICB_SHORT_ALLOC; 2258 1.1.2.3 yamt if (dst_part != my_part) 2259 1.1.2.3 yamt addr_type = UDF_ICB_LONG_ALLOC; 2260 1.1.2.3 yamt 2261 1.1.2.2 yamt icbflags &= ~UDF_ICB_TAG_FLAGS_ALLOC_MASK; 2262 1.1.2.3 yamt icbflags |= addr_type; 2263 1.1.2.2 yamt icbtag->flags = udf_rw16(icbflags); 2264 1.1.2.2 yamt 2265 1.1.2.2 yamt /* wipe old descriptor space */ 2266 1.1.2.2 yamt udf_wipe_adslots(udf_node); 2267 1.1.2.2 yamt 2268 1.1.2.2 yamt memset(&c_ad, 0, sizeof(struct long_ad)); 2269 1.1.2.2 yamt c_ad.len = udf_rw32(old_size | UDF_EXT_FREE); 2270 1.1.2.2 yamt c_ad.loc.part_num = udf_rw16(0); /* not relevant */ 2271 1.1.2.2 yamt c_ad.loc.lb_num = udf_rw32(0); /* not relevant */ 2272 1.1.2.2 yamt 2273 1.1.2.2 yamt slot = 0; 2274 1.1.2.2 yamt } else { 2275 1.1.2.2 yamt /* goto the last entry (if any) */ 2276 1.1.2.2 yamt slot = 0; 2277 1.1.2.2 yamt cpy_slot = 0; 2278 1.1.2.2 yamt foffset = 0; 2279 1.1.2.2 yamt memset(&c_ad, 0, sizeof(struct long_ad)); 2280 1.1.2.2 yamt for (;;) { 2281 1.1.2.2 yamt udf_get_adslot(udf_node, slot, &c_ad, &eof); 2282 1.1.2.2 yamt if (eof) 2283 1.1.2.2 yamt break; 2284 1.1.2.2 yamt 2285 1.1.2.2 yamt len = udf_rw32(c_ad.len); 2286 1.1.2.2 yamt flags = UDF_EXT_FLAGS(len); 2287 1.1.2.2 yamt len = UDF_EXT_LEN(len); 2288 1.1.2.2 yamt 2289 1.1.2.2 yamt end_foffset = foffset + len; 2290 1.1.2.2 yamt if (flags != UDF_EXT_REDIRECT) 2291 1.1.2.2 yamt foffset = end_foffset; 2292 1.1.2.2 yamt 2293 1.1.2.2 yamt slot++; 2294 1.1.2.2 yamt } 2295 1.1.2.2 yamt /* at end of adslots */ 2296 1.1.2.2 yamt 2297 1.1.2.2 yamt /* special case if the old size was zero, then there is no last slot */ 2298 1.1.2.2 yamt if (old_size == 0) { 2299 1.1.2.2 yamt c_ad.len = udf_rw32(0 | UDF_EXT_FREE); 2300 1.1.2.2 yamt c_ad.loc.part_num = udf_rw16(0); /* not relevant */ 2301 1.1.2.2 yamt c_ad.loc.lb_num = udf_rw32(0); /* not relevant */ 2302 1.1.2.2 yamt } else { 2303 1.1.2.2 yamt /* refetch last slot */ 2304 1.1.2.2 yamt slot--; 2305 1.1.2.2 yamt udf_get_adslot(udf_node, slot, &c_ad, &eof); 2306 1.1.2.2 yamt } 2307 1.1.2.2 yamt } 2308 1.1.2.2 yamt 2309 1.1.2.2 yamt /* 2310 1.1.2.2 yamt * If the length of the last slot is not a multiple of lb_size, adjust 2311 1.1.2.2 yamt * length so that it is; don't forget to adjust `append_len'! relevant for 2312 1.1.2.2 yamt * extending existing files 2313 1.1.2.2 yamt */ 2314 1.1.2.2 yamt len = udf_rw32(c_ad.len); 2315 1.1.2.2 yamt flags = UDF_EXT_FLAGS(len); 2316 1.1.2.2 yamt len = UDF_EXT_LEN(len); 2317 1.1.2.2 yamt 2318 1.1.2.2 yamt lastblock_grow = 0; 2319 1.1.2.2 yamt if (len % lb_size > 0) { 2320 1.1.2.2 yamt lastblock_grow = lb_size - (len % lb_size); 2321 1.1.2.2 yamt lastblock_grow = MIN(size_diff, lastblock_grow); 2322 1.1.2.2 yamt len += lastblock_grow; 2323 1.1.2.2 yamt c_ad.len = udf_rw32(len | flags); 2324 1.1.2.2 yamt 2325 1.1.2.2 yamt /* TODO zero appened space in buffer! */ 2326 1.1.2.2 yamt /* using uvm_vnp_zerorange(vp, old_size, new_size - old_size); ? */ 2327 1.1.2.2 yamt } 2328 1.1.2.2 yamt memset(&s_ad, 0, sizeof(struct long_ad)); 2329 1.1.2.2 yamt 2330 1.1.2.2 yamt /* size_diff can be bigger than allowed, so grow in chunks */ 2331 1.1.2.2 yamt append_len = size_diff - lastblock_grow; 2332 1.1.2.2 yamt while (append_len > 0) { 2333 1.1.2.2 yamt chunk = MIN(append_len, max_len); 2334 1.1.2.2 yamt s_ad.len = udf_rw32(chunk | UDF_EXT_FREE); 2335 1.1.2.2 yamt s_ad.loc.part_num = udf_rw16(0); 2336 1.1.2.2 yamt s_ad.loc.lb_num = udf_rw32(0); 2337 1.1.2.2 yamt 2338 1.1.2.2 yamt if (udf_ads_merge(lb_size, &c_ad, &s_ad)) { 2339 1.1.2.2 yamt /* not mergable (anymore) */ 2340 1.1.2.3 yamt error = udf_append_adslot(udf_node, &slot, &c_ad); 2341 1.1.2.2 yamt if (error) 2342 1.1.2.2 yamt goto errorout; 2343 1.1.2.2 yamt slot++; 2344 1.1.2.2 yamt c_ad = s_ad; 2345 1.1.2.2 yamt memset(&s_ad, 0, sizeof(struct long_ad)); 2346 1.1.2.2 yamt } 2347 1.1.2.2 yamt append_len -= chunk; 2348 1.1.2.2 yamt } 2349 1.1.2.2 yamt 2350 1.1.2.2 yamt /* if there is a rest piece in the accumulator, append it */ 2351 1.1.2.3 yamt if (UDF_EXT_LEN(udf_rw32(c_ad.len)) > 0) { 2352 1.1.2.3 yamt error = udf_append_adslot(udf_node, &slot, &c_ad); 2353 1.1.2.2 yamt if (error) 2354 1.1.2.2 yamt goto errorout; 2355 1.1.2.2 yamt slot++; 2356 1.1.2.2 yamt } 2357 1.1.2.2 yamt 2358 1.1.2.2 yamt /* if there is a rest piece that didn't fit, append it */ 2359 1.1.2.3 yamt if (UDF_EXT_LEN(udf_rw32(s_ad.len)) > 0) { 2360 1.1.2.3 yamt error = udf_append_adslot(udf_node, &slot, &s_ad); 2361 1.1.2.2 yamt if (error) 2362 1.1.2.2 yamt goto errorout; 2363 1.1.2.2 yamt slot++; 2364 1.1.2.2 yamt } 2365 1.1.2.2 yamt 2366 1.1.2.2 yamt inflen += size_diff; 2367 1.1.2.2 yamt objsize += size_diff; 2368 1.1.2.2 yamt if (fe) { 2369 1.1.2.2 yamt fe->inf_len = udf_rw64(inflen); 2370 1.1.2.2 yamt } else { 2371 1.1.2.2 yamt efe->inf_len = udf_rw64(inflen); 2372 1.1.2.2 yamt efe->obj_size = udf_rw64(objsize); 2373 1.1.2.2 yamt } 2374 1.1.2.2 yamt error = 0; 2375 1.1.2.2 yamt 2376 1.1.2.2 yamt if (evacuated_data) { 2377 1.1.2.2 yamt /* set new write size for uvm */ 2378 1.1.2.2 yamt uvm_vnp_setwritesize(vp, old_size); 2379 1.1.2.2 yamt 2380 1.1.2.2 yamt /* write out evacuated data */ 2381 1.1.2.2 yamt error = vn_rdwr(UIO_WRITE, udf_node->vnode, 2382 1.1.2.2 yamt evacuated_data, old_size, 0, 2383 1.1.2.2 yamt UIO_SYSSPACE, IO_ALTSEMANTICS | IO_NODELOCKED, 2384 1.1.2.2 yamt FSCRED, NULL, NULL); 2385 1.1.2.2 yamt uvm_vnp_setsize(vp, old_size); 2386 1.1.2.2 yamt } 2387 1.1.2.2 yamt 2388 1.1.2.2 yamt errorout: 2389 1.1.2.2 yamt if (evacuated_data) 2390 1.1.2.2 yamt free(evacuated_data, M_UDFTEMP); 2391 1.1.2.3 yamt 2392 1.1.2.3 yamt udf_count_alloc_exts(udf_node); 2393 1.1.2.2 yamt 2394 1.1.2.2 yamt udf_node_sanity_check(udf_node, &new_inflen, &new_lbrec); 2395 1.1.2.3 yamt UDF_UNLOCK_NODE(udf_node, 0); 2396 1.1.2.3 yamt 2397 1.1.2.2 yamt KASSERT(new_inflen == orig_inflen + size_diff); 2398 1.1.2.2 yamt KASSERT(new_lbrec == orig_lbrec); 2399 1.1.2.2 yamt 2400 1.1.2.2 yamt return error; 2401 1.1.2.2 yamt } 2402 1.1.2.2 yamt 2403 1.1.2.2 yamt /* --------------------------------------------------------------------- */ 2404 1.1.2.2 yamt 2405 1.1.2.2 yamt int 2406 1.1.2.2 yamt udf_shrink_node(struct udf_node *udf_node, uint64_t new_size) 2407 1.1.2.2 yamt { 2408 1.1.2.2 yamt struct vnode *vp = udf_node->vnode; 2409 1.1.2.2 yamt struct udf_mount *ump = udf_node->ump; 2410 1.1.2.2 yamt struct file_entry *fe; 2411 1.1.2.2 yamt struct extfile_entry *efe; 2412 1.1.2.2 yamt struct icb_tag *icbtag; 2413 1.1.2.2 yamt struct long_ad c_ad, s_ad, *node_ad_cpy; 2414 1.1.2.2 yamt uint64_t size_diff, old_size, inflen, objsize; 2415 1.1.2.2 yamt uint64_t foffset, end_foffset; 2416 1.1.2.2 yamt uint64_t orig_inflen, orig_lbrec, new_inflen, new_lbrec; 2417 1.1.2.2 yamt uint32_t lb_size, dscr_size, crclen; 2418 1.1.2.2 yamt uint32_t slot_offset; 2419 1.1.2.2 yamt uint32_t len, flags, max_len; 2420 1.1.2.2 yamt uint32_t num_lb, lb_num; 2421 1.1.2.2 yamt uint32_t max_l_ad, l_ad, l_ea; 2422 1.1.2.2 yamt uint16_t vpart_num; 2423 1.1.2.2 yamt uint8_t *data_pos; 2424 1.1.2.2 yamt int icbflags, addr_type; 2425 1.1.2.2 yamt int slot, cpy_slot, cpy_slots; 2426 1.1.2.2 yamt int eof, error; 2427 1.1.2.2 yamt 2428 1.1.2.2 yamt DPRINTF(ALLOC, ("udf_shrink_node\n")); 2429 1.1.2.2 yamt 2430 1.1.2.2 yamt UDF_LOCK_NODE(udf_node, 0); 2431 1.1.2.3 yamt udf_node_sanity_check(udf_node, &orig_inflen, &orig_lbrec); 2432 1.1.2.3 yamt 2433 1.1.2.2 yamt lb_size = udf_rw32(ump->logical_vol->lb_size); 2434 1.1.2.2 yamt max_len = ((UDF_EXT_MAXLEN / lb_size) * lb_size); 2435 1.1.2.2 yamt 2436 1.1.2.2 yamt /* do the work */ 2437 1.1.2.2 yamt fe = udf_node->fe; 2438 1.1.2.2 yamt efe = udf_node->efe; 2439 1.1.2.2 yamt if (fe) { 2440 1.1.2.2 yamt icbtag = &fe->icbtag; 2441 1.1.2.2 yamt inflen = udf_rw64(fe->inf_len); 2442 1.1.2.2 yamt objsize = inflen; 2443 1.1.2.2 yamt dscr_size = sizeof(struct file_entry) -1; 2444 1.1.2.2 yamt l_ea = udf_rw32(fe->l_ea); 2445 1.1.2.2 yamt l_ad = udf_rw32(fe->l_ad); 2446 1.1.2.2 yamt data_pos = (uint8_t *) fe + dscr_size + l_ea; 2447 1.1.2.2 yamt } else { 2448 1.1.2.2 yamt icbtag = &efe->icbtag; 2449 1.1.2.2 yamt inflen = udf_rw64(efe->inf_len); 2450 1.1.2.2 yamt objsize = udf_rw64(efe->obj_size); 2451 1.1.2.2 yamt dscr_size = sizeof(struct extfile_entry) -1; 2452 1.1.2.2 yamt l_ea = udf_rw32(efe->l_ea); 2453 1.1.2.2 yamt l_ad = udf_rw32(efe->l_ad); 2454 1.1.2.2 yamt data_pos = (uint8_t *) efe + dscr_size + l_ea; 2455 1.1.2.2 yamt } 2456 1.1.2.2 yamt max_l_ad = lb_size - dscr_size - l_ea; 2457 1.1.2.2 yamt 2458 1.1.2.2 yamt icbflags = udf_rw16(icbtag->flags); 2459 1.1.2.2 yamt addr_type = icbflags & UDF_ICB_TAG_FLAGS_ALLOC_MASK; 2460 1.1.2.2 yamt 2461 1.1.2.2 yamt old_size = inflen; 2462 1.1.2.2 yamt size_diff = old_size - new_size; 2463 1.1.2.2 yamt 2464 1.1.2.2 yamt DPRINTF(ALLOC, ("\tfrom %"PRIu64" to %"PRIu64"\n", old_size, new_size)); 2465 1.1.2.2 yamt 2466 1.1.2.2 yamt /* shrink the node to its new size */ 2467 1.1.2.2 yamt if (addr_type == UDF_ICB_INTERN_ALLOC) { 2468 1.1.2.2 yamt /* only reflect size change directly in the node */ 2469 1.1.2.2 yamt KASSERT(new_size <= max_l_ad); 2470 1.1.2.2 yamt inflen -= size_diff; 2471 1.1.2.2 yamt objsize -= size_diff; 2472 1.1.2.2 yamt l_ad -= size_diff; 2473 1.1.2.2 yamt crclen = dscr_size - UDF_DESC_TAG_LENGTH + l_ea + l_ad; 2474 1.1.2.2 yamt if (fe) { 2475 1.1.2.2 yamt fe->inf_len = udf_rw64(inflen); 2476 1.1.2.2 yamt fe->l_ad = udf_rw32(l_ad); 2477 1.1.2.2 yamt fe->tag.desc_crc_len = udf_rw32(crclen); 2478 1.1.2.2 yamt } else { 2479 1.1.2.2 yamt efe->inf_len = udf_rw64(inflen); 2480 1.1.2.2 yamt efe->obj_size = udf_rw64(objsize); 2481 1.1.2.2 yamt efe->l_ad = udf_rw32(l_ad); 2482 1.1.2.2 yamt efe->tag.desc_crc_len = udf_rw32(crclen); 2483 1.1.2.2 yamt } 2484 1.1.2.2 yamt error = 0; 2485 1.1.2.3 yamt 2486 1.1.2.3 yamt /* clear the space in the descriptor */ 2487 1.1.2.3 yamt KASSERT(old_size > new_size); 2488 1.1.2.3 yamt memset(data_pos + new_size, 0, old_size - new_size); 2489 1.1.2.3 yamt 2490 1.1.2.2 yamt /* TODO zero appened space in buffer! */ 2491 1.1.2.2 yamt /* using uvm_vnp_zerorange(vp, old_size, old_size - new_size); ? */ 2492 1.1.2.2 yamt 2493 1.1.2.2 yamt /* set new size for uvm */ 2494 1.1.2.2 yamt uvm_vnp_setsize(vp, new_size); 2495 1.1.2.2 yamt 2496 1.1.2.2 yamt udf_node_sanity_check(udf_node, &new_inflen, &new_lbrec); 2497 1.1.2.3 yamt UDF_UNLOCK_NODE(udf_node, 0); 2498 1.1.2.3 yamt 2499 1.1.2.2 yamt KASSERT(new_inflen == orig_inflen - size_diff); 2500 1.1.2.2 yamt KASSERT(new_lbrec == orig_lbrec); 2501 1.1.2.2 yamt KASSERT(new_lbrec == 0); 2502 1.1.2.2 yamt 2503 1.1.2.2 yamt return 0; 2504 1.1.2.2 yamt } 2505 1.1.2.2 yamt 2506 1.1.2.2 yamt /* setup node cleanup extents copy space */ 2507 1.1.2.2 yamt node_ad_cpy = malloc(lb_size * UDF_MAX_ALLOC_EXTENTS, 2508 1.1.2.2 yamt M_UDFMNT, M_WAITOK); 2509 1.1.2.2 yamt memset(node_ad_cpy, 0, lb_size * UDF_MAX_ALLOC_EXTENTS); 2510 1.1.2.2 yamt 2511 1.1.2.2 yamt /* 2512 1.1.2.2 yamt * Shrink the node by releasing the allocations and truncate the last 2513 1.1.2.2 yamt * allocation to the new size. If the new size fits into the 2514 1.1.2.2 yamt * allocation descriptor itself, transform it into an 2515 1.1.2.2 yamt * UDF_ICB_INTERN_ALLOC. 2516 1.1.2.2 yamt */ 2517 1.1.2.2 yamt slot = 0; 2518 1.1.2.2 yamt cpy_slot = 0; 2519 1.1.2.2 yamt foffset = 0; 2520 1.1.2.2 yamt 2521 1.1.2.2 yamt /* 1) copy till first overlap piece to the rewrite buffer */ 2522 1.1.2.2 yamt for (;;) { 2523 1.1.2.2 yamt udf_get_adslot(udf_node, slot, &s_ad, &eof); 2524 1.1.2.2 yamt if (eof) { 2525 1.1.2.2 yamt DPRINTF(WRITE, 2526 1.1.2.2 yamt ("Shrink node failed: " 2527 1.1.2.2 yamt "encountered EOF\n")); 2528 1.1.2.2 yamt error = EINVAL; 2529 1.1.2.2 yamt goto errorout; /* panic? */ 2530 1.1.2.2 yamt } 2531 1.1.2.2 yamt len = udf_rw32(s_ad.len); 2532 1.1.2.2 yamt flags = UDF_EXT_FLAGS(len); 2533 1.1.2.2 yamt len = UDF_EXT_LEN(len); 2534 1.1.2.2 yamt 2535 1.1.2.2 yamt if (flags == UDF_EXT_REDIRECT) { 2536 1.1.2.2 yamt slot++; 2537 1.1.2.2 yamt continue; 2538 1.1.2.2 yamt } 2539 1.1.2.2 yamt 2540 1.1.2.2 yamt end_foffset = foffset + len; 2541 1.1.2.2 yamt if (end_foffset > new_size) 2542 1.1.2.2 yamt break; /* found */ 2543 1.1.2.2 yamt 2544 1.1.2.2 yamt node_ad_cpy[cpy_slot++] = s_ad; 2545 1.1.2.2 yamt 2546 1.1.2.2 yamt DPRINTF(ALLOC, ("\t1: vp %d, lb %d, len %d, flags %d " 2547 1.1.2.2 yamt "-> stack\n", 2548 1.1.2.2 yamt udf_rw16(s_ad.loc.part_num), 2549 1.1.2.2 yamt udf_rw32(s_ad.loc.lb_num), 2550 1.1.2.2 yamt UDF_EXT_LEN(udf_rw32(s_ad.len)), 2551 1.1.2.2 yamt UDF_EXT_FLAGS(udf_rw32(s_ad.len)) >> 30)); 2552 1.1.2.2 yamt 2553 1.1.2.2 yamt foffset = end_foffset; 2554 1.1.2.2 yamt slot++; 2555 1.1.2.2 yamt } 2556 1.1.2.2 yamt slot_offset = new_size - foffset; 2557 1.1.2.2 yamt 2558 1.1.2.2 yamt /* 2) trunc overlapping slot at overlap and copy it */ 2559 1.1.2.2 yamt if (slot_offset > 0) { 2560 1.1.2.2 yamt lb_num = udf_rw32(s_ad.loc.lb_num); 2561 1.1.2.2 yamt vpart_num = udf_rw16(s_ad.loc.part_num); 2562 1.1.2.2 yamt 2563 1.1.2.2 yamt if (flags == UDF_EXT_ALLOCATED) { 2564 1.1.2.3 yamt /* note: round DOWN on num_lb */ 2565 1.1.2.2 yamt lb_num += (slot_offset + lb_size -1) / lb_size; 2566 1.1.2.3 yamt num_lb = (len - slot_offset) / lb_size; 2567 1.1.2.2 yamt 2568 1.1.2.2 yamt udf_free_allocated_space(ump, lb_num, vpart_num, num_lb); 2569 1.1.2.2 yamt } 2570 1.1.2.2 yamt 2571 1.1.2.2 yamt s_ad.len = udf_rw32(slot_offset | flags); 2572 1.1.2.2 yamt node_ad_cpy[cpy_slot++] = s_ad; 2573 1.1.2.2 yamt slot++; 2574 1.1.2.2 yamt 2575 1.1.2.2 yamt DPRINTF(ALLOC, ("\t2: vp %d, lb %d, len %d, flags %d " 2576 1.1.2.2 yamt "-> stack\n", 2577 1.1.2.2 yamt udf_rw16(s_ad.loc.part_num), 2578 1.1.2.2 yamt udf_rw32(s_ad.loc.lb_num), 2579 1.1.2.2 yamt UDF_EXT_LEN(udf_rw32(s_ad.len)), 2580 1.1.2.2 yamt UDF_EXT_FLAGS(udf_rw32(s_ad.len)) >> 30)); 2581 1.1.2.2 yamt } 2582 1.1.2.2 yamt 2583 1.1.2.2 yamt /* 3) delete remainder */ 2584 1.1.2.2 yamt for (;;) { 2585 1.1.2.2 yamt udf_get_adslot(udf_node, slot, &s_ad, &eof); 2586 1.1.2.2 yamt if (eof) 2587 1.1.2.2 yamt break; 2588 1.1.2.2 yamt 2589 1.1.2.2 yamt len = udf_rw32(s_ad.len); 2590 1.1.2.2 yamt flags = UDF_EXT_FLAGS(len); 2591 1.1.2.2 yamt len = UDF_EXT_LEN(len); 2592 1.1.2.2 yamt 2593 1.1.2.2 yamt if (flags == UDF_EXT_REDIRECT) { 2594 1.1.2.2 yamt slot++; 2595 1.1.2.2 yamt continue; 2596 1.1.2.2 yamt } 2597 1.1.2.2 yamt 2598 1.1.2.2 yamt DPRINTF(ALLOC, ("\t3: delete remainder " 2599 1.1.2.2 yamt "vp %d lb %d, len %d, flags %d\n", 2600 1.1.2.2 yamt udf_rw16(s_ad.loc.part_num), 2601 1.1.2.2 yamt udf_rw32(s_ad.loc.lb_num), 2602 1.1.2.2 yamt UDF_EXT_LEN(udf_rw32(s_ad.len)), 2603 1.1.2.2 yamt UDF_EXT_FLAGS(udf_rw32(s_ad.len)) >> 30)); 2604 1.1.2.2 yamt 2605 1.1.2.2 yamt if (flags == UDF_EXT_ALLOCATED) { 2606 1.1.2.2 yamt lb_num = udf_rw32(s_ad.loc.lb_num); 2607 1.1.2.2 yamt vpart_num = udf_rw16(s_ad.loc.part_num); 2608 1.1.2.2 yamt num_lb = (len + lb_size - 1) / lb_size; 2609 1.1.2.2 yamt 2610 1.1.2.2 yamt udf_free_allocated_space(ump, lb_num, vpart_num, 2611 1.1.2.2 yamt num_lb); 2612 1.1.2.2 yamt } 2613 1.1.2.2 yamt 2614 1.1.2.2 yamt slot++; 2615 1.1.2.2 yamt } 2616 1.1.2.2 yamt 2617 1.1.2.2 yamt /* 4) if it will fit into the descriptor then convert */ 2618 1.1.2.2 yamt if (new_size < max_l_ad) { 2619 1.1.2.2 yamt /* 2620 1.1.2.2 yamt * resque/evacuate old piece by reading it in, and convert it 2621 1.1.2.2 yamt * to internal alloc. 2622 1.1.2.2 yamt */ 2623 1.1.2.2 yamt if (new_size == 0) { 2624 1.1.2.2 yamt /* XXX/TODO only for zero sizing now */ 2625 1.1.2.2 yamt udf_wipe_adslots(udf_node); 2626 1.1.2.2 yamt 2627 1.1.2.2 yamt icbflags &= ~UDF_ICB_TAG_FLAGS_ALLOC_MASK; 2628 1.1.2.2 yamt icbflags |= UDF_ICB_INTERN_ALLOC; 2629 1.1.2.2 yamt icbtag->flags = udf_rw16(icbflags); 2630 1.1.2.2 yamt 2631 1.1.2.2 yamt inflen -= size_diff; KASSERT(inflen == 0); 2632 1.1.2.2 yamt objsize -= size_diff; 2633 1.1.2.2 yamt l_ad = new_size; 2634 1.1.2.2 yamt crclen = dscr_size - UDF_DESC_TAG_LENGTH + l_ea + l_ad; 2635 1.1.2.2 yamt if (fe) { 2636 1.1.2.2 yamt fe->inf_len = udf_rw64(inflen); 2637 1.1.2.2 yamt fe->l_ad = udf_rw32(l_ad); 2638 1.1.2.2 yamt fe->tag.desc_crc_len = udf_rw32(crclen); 2639 1.1.2.2 yamt } else { 2640 1.1.2.2 yamt efe->inf_len = udf_rw64(inflen); 2641 1.1.2.2 yamt efe->obj_size = udf_rw64(objsize); 2642 1.1.2.2 yamt efe->l_ad = udf_rw32(l_ad); 2643 1.1.2.2 yamt efe->tag.desc_crc_len = udf_rw32(crclen); 2644 1.1.2.2 yamt } 2645 1.1.2.2 yamt /* eventually copy in evacuated piece */ 2646 1.1.2.2 yamt /* set new size for uvm */ 2647 1.1.2.2 yamt uvm_vnp_setsize(vp, new_size); 2648 1.1.2.2 yamt 2649 1.1.2.2 yamt free(node_ad_cpy, M_UDFMNT); 2650 1.1.2.3 yamt udf_node_sanity_check(udf_node, &new_inflen, &new_lbrec); 2651 1.1.2.3 yamt 2652 1.1.2.2 yamt UDF_UNLOCK_NODE(udf_node, 0); 2653 1.1.2.2 yamt 2654 1.1.2.2 yamt KASSERT(new_inflen == orig_inflen - size_diff); 2655 1.1.2.2 yamt KASSERT(new_inflen == 0); 2656 1.1.2.2 yamt KASSERT(new_lbrec == 0); 2657 1.1.2.2 yamt 2658 1.1.2.2 yamt return 0; 2659 1.1.2.2 yamt } 2660 1.1.2.2 yamt 2661 1.1.2.2 yamt printf("UDF_SHRINK_NODE: could convert to internal alloc!\n"); 2662 1.1.2.2 yamt } 2663 1.1.2.2 yamt 2664 1.1.2.2 yamt /* 5) reset node descriptors */ 2665 1.1.2.2 yamt udf_wipe_adslots(udf_node); 2666 1.1.2.2 yamt 2667 1.1.2.2 yamt /* 6) copy back extents; merge when possible. Recounting on the fly */ 2668 1.1.2.2 yamt cpy_slots = cpy_slot; 2669 1.1.2.2 yamt 2670 1.1.2.2 yamt c_ad = node_ad_cpy[0]; 2671 1.1.2.2 yamt slot = 0; 2672 1.1.2.2 yamt for (cpy_slot = 1; cpy_slot < cpy_slots; cpy_slot++) { 2673 1.1.2.2 yamt s_ad = node_ad_cpy[cpy_slot]; 2674 1.1.2.2 yamt 2675 1.1.2.2 yamt DPRINTF(ALLOC, ("\t6: stack -> got mapping vp %d " 2676 1.1.2.2 yamt "lb %d, len %d, flags %d\n", 2677 1.1.2.2 yamt udf_rw16(s_ad.loc.part_num), 2678 1.1.2.2 yamt udf_rw32(s_ad.loc.lb_num), 2679 1.1.2.2 yamt UDF_EXT_LEN(udf_rw32(s_ad.len)), 2680 1.1.2.2 yamt UDF_EXT_FLAGS(udf_rw32(s_ad.len)) >> 30)); 2681 1.1.2.2 yamt 2682 1.1.2.2 yamt /* see if we can merge */ 2683 1.1.2.2 yamt if (udf_ads_merge(lb_size, &c_ad, &s_ad)) { 2684 1.1.2.2 yamt /* not mergable (anymore) */ 2685 1.1.2.2 yamt DPRINTF(ALLOC, ("\t6: appending vp %d lb %d, " 2686 1.1.2.2 yamt "len %d, flags %d\n", 2687 1.1.2.2 yamt udf_rw16(c_ad.loc.part_num), 2688 1.1.2.2 yamt udf_rw32(c_ad.loc.lb_num), 2689 1.1.2.2 yamt UDF_EXT_LEN(udf_rw32(c_ad.len)), 2690 1.1.2.2 yamt UDF_EXT_FLAGS(udf_rw32(c_ad.len)) >> 30)); 2691 1.1.2.2 yamt 2692 1.1.2.3 yamt error = udf_append_adslot(udf_node, &slot, &c_ad); 2693 1.1.2.2 yamt if (error) 2694 1.1.2.2 yamt goto errorout; /* panic? */ 2695 1.1.2.2 yamt c_ad = s_ad; 2696 1.1.2.2 yamt slot++; 2697 1.1.2.2 yamt } 2698 1.1.2.2 yamt } 2699 1.1.2.2 yamt 2700 1.1.2.2 yamt /* 7) push rest slot (if any) */ 2701 1.1.2.2 yamt if (UDF_EXT_LEN(c_ad.len) > 0) { 2702 1.1.2.2 yamt DPRINTF(ALLOC, ("\t7: last append vp %d lb %d, " 2703 1.1.2.2 yamt "len %d, flags %d\n", 2704 1.1.2.2 yamt udf_rw16(c_ad.loc.part_num), 2705 1.1.2.2 yamt udf_rw32(c_ad.loc.lb_num), 2706 1.1.2.2 yamt UDF_EXT_LEN(udf_rw32(c_ad.len)), 2707 1.1.2.2 yamt UDF_EXT_FLAGS(udf_rw32(c_ad.len)) >> 30)); 2708 1.1.2.2 yamt 2709 1.1.2.3 yamt error = udf_append_adslot(udf_node, &slot, &c_ad); 2710 1.1.2.2 yamt if (error) 2711 1.1.2.2 yamt goto errorout; /* panic? */ 2712 1.1.2.2 yamt ; 2713 1.1.2.2 yamt } 2714 1.1.2.2 yamt 2715 1.1.2.2 yamt inflen -= size_diff; 2716 1.1.2.2 yamt objsize -= size_diff; 2717 1.1.2.2 yamt if (fe) { 2718 1.1.2.2 yamt fe->inf_len = udf_rw64(inflen); 2719 1.1.2.2 yamt } else { 2720 1.1.2.2 yamt efe->inf_len = udf_rw64(inflen); 2721 1.1.2.2 yamt efe->obj_size = udf_rw64(objsize); 2722 1.1.2.2 yamt } 2723 1.1.2.2 yamt error = 0; 2724 1.1.2.2 yamt 2725 1.1.2.2 yamt /* set new size for uvm */ 2726 1.1.2.2 yamt uvm_vnp_setsize(vp, new_size); 2727 1.1.2.2 yamt 2728 1.1.2.2 yamt errorout: 2729 1.1.2.2 yamt free(node_ad_cpy, M_UDFMNT); 2730 1.1.2.3 yamt 2731 1.1.2.3 yamt udf_count_alloc_exts(udf_node); 2732 1.1.2.2 yamt 2733 1.1.2.2 yamt udf_node_sanity_check(udf_node, &new_inflen, &new_lbrec); 2734 1.1.2.3 yamt UDF_UNLOCK_NODE(udf_node, 0); 2735 1.1.2.3 yamt 2736 1.1.2.2 yamt KASSERT(new_inflen == orig_inflen - size_diff); 2737 1.1.2.2 yamt 2738 1.1.2.2 yamt return error; 2739 1.1.2.2 yamt } 2740 1.1.2.2 yamt 2741
Indexes created Fri Sep 26 20:09:58 GMT 2025