| 312 | #endif |
| 313 | |
| 314 | void |
| 315 | dnode_byteswap(dnode_phys_t *dnp) |
| 316 | { |
| 317 | uint64_t *buf64 = (void*)&dnp->dn_blkptr; |
| 318 | int i; |
| 319 | |
| 320 | if (dnp->dn_type == DMU_OT_NONE) { |
| 321 | bzero(dnp, sizeof (dnode_phys_t)); |
| 322 | return; |
| 323 | } |
| 324 | |
| 325 | dnp->dn_datablkszsec = BSWAP_16(dnp->dn_datablkszsec); |
| 326 | dnp->dn_bonuslen = BSWAP_16(dnp->dn_bonuslen); |
| 327 | dnp->dn_extra_slots = BSWAP_8(dnp->dn_extra_slots); |
| 328 | dnp->dn_maxblkid = BSWAP_64(dnp->dn_maxblkid); |
| 329 | dnp->dn_used = BSWAP_64(dnp->dn_used); |
| 330 | |
| 331 | /* |
| 332 | * dn_nblkptr is only one byte, so it's OK to read it in either |
| 333 | * byte order. We can't read dn_bouslen. |
| 334 | */ |
| 335 | ASSERT(dnp->dn_indblkshift <= SPA_MAXBLOCKSHIFT); |
| 336 | ASSERT(dnp->dn_nblkptr <= DN_MAX_NBLKPTR); |
| 337 | for (i = 0; i < dnp->dn_nblkptr * sizeof (blkptr_t)/8; i++) |
| 338 | buf64[i] = BSWAP_64(buf64[i]); |
| 339 | |
| 340 | /* |
| 341 | * OK to check dn_bonuslen for zero, because it won't matter if |
| 342 | * we have the wrong byte order. This is necessary because the |
| 343 | * dnode dnode is smaller than a regular dnode. |
| 344 | */ |
| 345 | if (dnp->dn_bonuslen != 0) { |
| 346 | /* |
| 347 | * Note that the bonus length calculated here may be |
| 348 | * longer than the actual bonus buffer. This is because |
| 349 | * we always put the bonus buffer after the last block |
| 350 | * pointer (instead of packing it against the end of the |
| 351 | * dnode buffer). |
| 352 | */ |
| 353 | int off = (dnp->dn_nblkptr-1) * sizeof (blkptr_t); |
| 354 | int slots = dnp->dn_extra_slots + 1; |
| 355 | size_t len = DN_SLOTS_TO_BONUSLEN(slots) - off; |
| 356 | dmu_object_byteswap_t byteswap; |
| 357 | ASSERT(DMU_OT_IS_VALID(dnp->dn_bonustype)); |
| 358 | byteswap = DMU_OT_BYTESWAP(dnp->dn_bonustype); |
| 359 | dmu_ot_byteswap[byteswap].ob_func(dnp->dn_bonus + off, len); |
| 360 | } |
| 361 | |
| 362 | /* Swap SPILL block if we have one */ |
| 363 | if (dnp->dn_flags & DNODE_FLAG_SPILL_BLKPTR) |
| 364 | byteswap_uint64_array(DN_SPILL_BLKPTR(dnp), sizeof (blkptr_t)); |
| 365 | } |
| 366 | |
| 367 | void |
| 368 | dnode_buf_byteswap(void *vbuf, size_t size) |
no test coverage detected