zfsboot.c revision 329099
1185029Spjd/*- 2185029Spjd * Copyright (c) 1998 Robert Nordier 3185029Spjd * All rights reserved. 4185029Spjd * 5185029Spjd * Redistribution and use in source and binary forms are freely 6185029Spjd * permitted provided that the above copyright notice and this 7185029Spjd * paragraph and the following disclaimer are duplicated in all 8185029Spjd * such forms. 9185029Spjd * 10185029Spjd * This software is provided "AS IS" and without any express or 11185029Spjd * implied warranties, including, without limitation, the implied 12185029Spjd * warranties of merchantability and fitness for a particular 13185029Spjd * purpose. 14185029Spjd */ 15185029Spjd 16185029Spjd#include <sys/cdefs.h> 17185029Spjd__FBSDID("$FreeBSD: stable/11/sys/boot/i386/zfsboot/zfsboot.c 329099 2018-02-10 04:37:44Z kevans $"); 18185029Spjd 19185029Spjd#include <sys/param.h> 20185029Spjd#include <sys/errno.h> 21185029Spjd#include <sys/diskmbr.h> 22185096Sdfr#ifdef GPT 23185096Sdfr#include <sys/gpt.h> 24185096Sdfr#endif 25185029Spjd#include <sys/reboot.h> 26185029Spjd#include <sys/queue.h> 27185029Spjd 28185029Spjd#include <machine/bootinfo.h> 29185029Spjd#include <machine/elf.h> 30200309Sjhb#include <machine/pc/bios.h> 31185029Spjd 32185029Spjd#include <stdarg.h> 33185029Spjd#include <stddef.h> 34185029Spjd 35185029Spjd#include <a.out.h> 36185029Spjd 37185029Spjd#include <btxv86.h> 38185029Spjd 39185029Spjd#include "lib.h" 40213136Spjd#include "rbx.h" 41213136Spjd#include "drv.h" 42213136Spjd#include "util.h" 43213136Spjd#include "cons.h" 44235154Savg#include "bootargs.h" 45294765Simp#include "paths.h" 46185029Spjd 47235329Savg#include "libzfs.h" 48235329Savg 49297629Sallanjude#define ARGS 0x900 50297629Sallanjude#define NOPT 14 51297629Sallanjude#define NDEV 3 52185029Spjd 53297629Sallanjude#define BIOS_NUMDRIVES 0x475 54297629Sallanjude#define DRV_HARD 0x80 55297629Sallanjude#define DRV_MASK 0x7f 56185029Spjd 57297629Sallanjude#define TYPE_AD 0 58297629Sallanjude#define TYPE_DA 1 59297629Sallanjude#define TYPE_MAXHARD TYPE_DA 60297629Sallanjude#define TYPE_FD 2 61185029Spjd 62297629Sallanjude#define DEV_GELIBOOT_BSIZE 4096 63297629Sallanjude 64185029Spjdextern uint32_t _end; 65185029Spjd 66185096Sdfr#ifdef GPT 67185096Sdfrstatic const uuid_t freebsd_zfs_uuid = GPT_ENT_TYPE_FREEBSD_ZFS; 68185096Sdfr#endif 69185029Spjdstatic const char optstr[NOPT] = "DhaCcdgmnpqrsv"; /* Also 'P', 'S' */ 70185029Spjdstatic const unsigned char flags[NOPT] = { 71185029Spjd RBX_DUAL, 72185029Spjd RBX_SERIAL, 73185029Spjd RBX_ASKNAME, 74185029Spjd RBX_CDROM, 75185029Spjd RBX_CONFIG, 76185029Spjd RBX_KDB, 77185029Spjd RBX_GDB, 78185029Spjd RBX_MUTE, 79185029Spjd RBX_NOINTR, 80185029Spjd RBX_PAUSE, 81185029Spjd RBX_QUIET, 82185029Spjd RBX_DFLTROOT, 83185029Spjd RBX_SINGLE, 84185029Spjd RBX_VERBOSE 85185029Spjd}; 86213136Spjduint32_t opts; 87185029Spjd 88185029Spjdstatic const unsigned char dev_maj[NDEV] = {30, 4, 2}; 89185029Spjd 90185029Spjdstatic char cmd[512]; 91234339Savgstatic char cmddup[512]; 92185029Spjdstatic char kname[1024]; 93235329Savgstatic char rootname[256]; 94185029Spjdstatic int comspeed = SIOSPD; 95185029Spjdstatic struct bootinfo bootinfo; 96185029Spjdstatic uint32_t bootdev; 97235329Savgstatic struct zfs_boot_args zfsargs; 98235329Savgstatic struct zfsmount zfsmount; 99185029Spjd 100200309Sjhbvm_offset_t high_heap_base; 101200309Sjhbuint32_t bios_basemem, bios_extmem, high_heap_size; 102200309Sjhb 103200309Sjhbstatic struct bios_smap smap; 104200309Sjhb 105200309Sjhb/* 106200309Sjhb * The minimum amount of memory to reserve in bios_extmem for the heap. 107200309Sjhb */ 108328866Skevans#define HEAP_MIN (64 * 1024 * 1024) 109200309Sjhb 110200309Sjhbstatic char *heap_next; 111200309Sjhbstatic char *heap_end; 112200309Sjhb 113185029Spjd/* Buffers that must not span a 64k boundary. */ 114297629Sallanjude#define READ_BUF_SIZE 8192 115185029Spjdstruct dmadat { 116185029Spjd char rdbuf[READ_BUF_SIZE]; /* for reading large things */ 117185029Spjd char secbuf[READ_BUF_SIZE]; /* for MBR/disklabel */ 118185029Spjd}; 119185029Spjdstatic struct dmadat *dmadat; 120185029Spjd 121185029Spjdvoid exit(int); 122308914Savgvoid reboot(void); 123185029Spjdstatic void load(void); 124329099Skevansstatic int parse_cmd(void); 125200309Sjhbstatic void bios_getmem(void); 126296963Sallanjudevoid *malloc(size_t n); 127296963Sallanjudevoid free(void *ptr); 128185029Spjd 129296963Sallanjudevoid * 130185029Spjdmalloc(size_t n) 131185029Spjd{ 132185029Spjd char *p = heap_next; 133185029Spjd if (p + n > heap_end) { 134185029Spjd printf("malloc failure\n"); 135185029Spjd for (;;) 136185029Spjd ; 137296963Sallanjude /* NOTREACHED */ 138296963Sallanjude return (0); 139185029Spjd } 140185029Spjd heap_next += n; 141296963Sallanjude return (p); 142185029Spjd} 143185029Spjd 144296963Sallanjudevoid 145296963Sallanjudefree(void *ptr) 146296963Sallanjude{ 147296963Sallanjude 148296963Sallanjude return; 149296963Sallanjude} 150296963Sallanjude 151185029Spjdstatic char * 152185029Spjdstrdup(const char *s) 153185029Spjd{ 154185029Spjd char *p = malloc(strlen(s) + 1); 155185029Spjd strcpy(p, s); 156296963Sallanjude return (p); 157185029Spjd} 158185029Spjd 159296963Sallanjude#ifdef LOADER_GELI_SUPPORT 160296963Sallanjude#include "geliboot.c" 161296963Sallanjudestatic char gelipw[GELI_PW_MAXLEN]; 162329099Skevansstatic struct keybuf *gelibuf; 163296963Sallanjude#endif 164296963Sallanjude 165185029Spjd#include "zfsimpl.c" 166185029Spjd 167185029Spjd/* 168185029Spjd * Read from a dnode (which must be from a ZPL filesystem). 169185029Spjd */ 170185029Spjdstatic int 171185029Spjdzfs_read(spa_t *spa, const dnode_phys_t *dnode, off_t *offp, void *start, size_t size) 172185029Spjd{ 173185029Spjd const znode_phys_t *zp = (const znode_phys_t *) dnode->dn_bonus; 174185029Spjd size_t n; 175185029Spjd int rc; 176185029Spjd 177185029Spjd n = size; 178185029Spjd if (*offp + n > zp->zp_size) 179185029Spjd n = zp->zp_size - *offp; 180308914Savg 181185029Spjd rc = dnode_read(spa, dnode, *offp, start, n); 182185029Spjd if (rc) 183185029Spjd return (-1); 184185029Spjd *offp += n; 185185029Spjd 186185029Spjd return (n); 187185029Spjd} 188185029Spjd 189185029Spjd/* 190185029Spjd * Current ZFS pool 191185029Spjd */ 192235329Savgstatic spa_t *spa; 193241293Savgstatic spa_t *primary_spa; 194241293Savgstatic vdev_t *primary_vdev; 195185029Spjd 196185029Spjd/* 197185029Spjd * A wrapper for dskread that doesn't have to worry about whether the 198185029Spjd * buffer pointer crosses a 64k boundary. 199185029Spjd */ 200185029Spjdstatic int 201185029Spjdvdev_read(vdev_t *vdev, void *priv, off_t off, void *buf, size_t bytes) 202185029Spjd{ 203185029Spjd char *p; 204297629Sallanjude daddr_t lba, alignlba; 205300257Sallanjude off_t diff; 206297629Sallanjude unsigned int nb, alignnb; 207185029Spjd struct dsk *dsk = (struct dsk *) priv; 208185029Spjd 209185029Spjd if ((off & (DEV_BSIZE - 1)) || (bytes & (DEV_BSIZE - 1))) 210185029Spjd return -1; 211185029Spjd 212185029Spjd p = buf; 213185029Spjd lba = off / DEV_BSIZE; 214213136Spjd lba += dsk->start; 215297629Sallanjude /* 216300257Sallanjude * Align reads to 4k else 4k sector GELIs will not decrypt. 217300257Sallanjude * Round LBA down to nearest multiple of DEV_GELIBOOT_BSIZE bytes. 218300257Sallanjude */ 219300257Sallanjude alignlba = rounddown2(off, DEV_GELIBOOT_BSIZE) / DEV_BSIZE; 220300257Sallanjude /* 221297629Sallanjude * The read must be aligned to DEV_GELIBOOT_BSIZE bytes relative to the 222297629Sallanjude * start of the GELI partition, not the start of the actual disk. 223297629Sallanjude */ 224297629Sallanjude alignlba += dsk->start; 225297629Sallanjude diff = (lba - alignlba) * DEV_BSIZE; 226297629Sallanjude 227185029Spjd while (bytes > 0) { 228185029Spjd nb = bytes / DEV_BSIZE; 229297629Sallanjude /* 230297629Sallanjude * Ensure that the read size plus the leading offset does not 231297629Sallanjude * exceed the size of the read buffer. 232297629Sallanjude */ 233298949Speter if (nb > (READ_BUF_SIZE - diff) / DEV_BSIZE) 234298949Speter nb = (READ_BUF_SIZE - diff) / DEV_BSIZE; 235297629Sallanjude /* 236297629Sallanjude * Round the number of blocks to read up to the nearest multiple 237297629Sallanjude * of DEV_GELIBOOT_BSIZE. 238297629Sallanjude */ 239298949Speter alignnb = roundup2(nb * DEV_BSIZE + diff, DEV_GELIBOOT_BSIZE) 240298949Speter / DEV_BSIZE; 241297629Sallanjude 242297629Sallanjude if (drvread(dsk, dmadat->rdbuf, alignlba, alignnb)) 243185029Spjd return -1; 244296963Sallanjude#ifdef LOADER_GELI_SUPPORT 245296963Sallanjude /* decrypt */ 246296963Sallanjude if (is_geli(dsk) == 0) { 247297629Sallanjude if (geli_read(dsk, ((alignlba - dsk->start) * 248297629Sallanjude DEV_BSIZE), dmadat->rdbuf, alignnb * DEV_BSIZE)) 249297629Sallanjude return (-1); 250296963Sallanjude } 251296963Sallanjude#endif 252297629Sallanjude memcpy(p, dmadat->rdbuf + diff, nb * DEV_BSIZE); 253185029Spjd p += nb * DEV_BSIZE; 254185029Spjd lba += nb; 255297629Sallanjude alignlba += alignnb; 256185029Spjd bytes -= nb * DEV_BSIZE; 257297629Sallanjude /* Don't need the leading offset after the first block. */ 258297629Sallanjude diff = 0; 259185029Spjd } 260185029Spjd 261185029Spjd return 0; 262185029Spjd} 263185029Spjd 264185029Spjdstatic int 265308914Savgvdev_write(vdev_t *vdev, void *priv, off_t off, void *buf, size_t bytes) 266308914Savg{ 267308914Savg char *p; 268308914Savg daddr_t lba; 269308914Savg unsigned int nb; 270308914Savg struct dsk *dsk = (struct dsk *) priv; 271308914Savg 272308914Savg if ((off & (DEV_BSIZE - 1)) || (bytes & (DEV_BSIZE - 1))) 273308914Savg return -1; 274308914Savg 275308914Savg p = buf; 276308914Savg lba = off / DEV_BSIZE; 277308914Savg lba += dsk->start; 278308914Savg while (bytes > 0) { 279308914Savg nb = bytes / DEV_BSIZE; 280308914Savg if (nb > READ_BUF_SIZE / DEV_BSIZE) 281308914Savg nb = READ_BUF_SIZE / DEV_BSIZE; 282308914Savg memcpy(dmadat->rdbuf, p, nb * DEV_BSIZE); 283308914Savg if (drvwrite(dsk, dmadat->rdbuf, lba, nb)) 284308914Savg return -1; 285308914Savg p += nb * DEV_BSIZE; 286308914Savg lba += nb; 287308914Savg bytes -= nb * DEV_BSIZE; 288308914Savg } 289308914Savg 290308914Savg return 0; 291308914Savg} 292308914Savg 293308914Savgstatic int 294185029Spjdxfsread(const dnode_phys_t *dnode, off_t *offp, void *buf, size_t nbyte) 295185029Spjd{ 296185029Spjd if ((size_t)zfs_read(spa, dnode, offp, buf, nbyte) != nbyte) { 297235329Savg printf("Invalid format\n"); 298185029Spjd return -1; 299185029Spjd } 300185029Spjd return 0; 301185029Spjd} 302185029Spjd 303308914Savg/* 304308914Savg * Read Pad2 (formerly "Boot Block Header") area of the first 305308914Savg * vdev label of the given vdev. 306308914Savg */ 307308914Savgstatic int 308308914Savgvdev_read_pad2(vdev_t *vdev, char *buf, size_t size) 309308914Savg{ 310308914Savg blkptr_t bp; 311308914Savg char *tmp = zap_scratch; 312308914Savg off_t off = offsetof(vdev_label_t, vl_pad2); 313308914Savg 314308914Savg if (size > VDEV_PAD_SIZE) 315308914Savg size = VDEV_PAD_SIZE; 316308914Savg 317308914Savg BP_ZERO(&bp); 318308914Savg BP_SET_LSIZE(&bp, VDEV_PAD_SIZE); 319308914Savg BP_SET_PSIZE(&bp, VDEV_PAD_SIZE); 320308914Savg BP_SET_CHECKSUM(&bp, ZIO_CHECKSUM_LABEL); 321308914Savg BP_SET_COMPRESS(&bp, ZIO_COMPRESS_OFF); 322308914Savg DVA_SET_OFFSET(BP_IDENTITY(&bp), off); 323308914Savg if (vdev_read_phys(vdev, &bp, tmp, off, 0)) 324308914Savg return (EIO); 325308914Savg memcpy(buf, tmp, size); 326308914Savg return (0); 327308914Savg} 328308914Savg 329308914Savgstatic int 330308914Savgvdev_clear_pad2(vdev_t *vdev) 331308914Savg{ 332308914Savg char *zeroes = zap_scratch; 333308914Savg uint64_t *end; 334308914Savg off_t off = offsetof(vdev_label_t, vl_pad2); 335308914Savg 336308914Savg memset(zeroes, 0, VDEV_PAD_SIZE); 337308914Savg end = (uint64_t *)(zeroes + VDEV_PAD_SIZE); 338308914Savg /* ZIO_CHECKSUM_LABEL magic and pre-calcualted checksum for all zeros */ 339308914Savg end[-5] = 0x0210da7ab10c7a11; 340308914Savg end[-4] = 0x97f48f807f6e2a3f; 341308914Savg end[-3] = 0xaf909f1658aacefc; 342308914Savg end[-2] = 0xcbd1ea57ff6db48b; 343308914Savg end[-1] = 0x6ec692db0d465fab; 344308914Savg if (vdev_write(vdev, vdev->v_read_priv, off, zeroes, VDEV_PAD_SIZE)) 345308914Savg return (EIO); 346308914Savg return (0); 347308914Savg} 348308914Savg 349200309Sjhbstatic void 350200309Sjhbbios_getmem(void) 351185029Spjd{ 352200309Sjhb uint64_t size; 353185029Spjd 354200309Sjhb /* Parse system memory map */ 355200309Sjhb v86.ebx = 0; 356200309Sjhb do { 357200309Sjhb v86.ctl = V86_FLAGS; 358200309Sjhb v86.addr = 0x15; /* int 0x15 function 0xe820*/ 359200309Sjhb v86.eax = 0xe820; 360200309Sjhb v86.ecx = sizeof(struct bios_smap); 361200309Sjhb v86.edx = SMAP_SIG; 362200309Sjhb v86.es = VTOPSEG(&smap); 363200309Sjhb v86.edi = VTOPOFF(&smap); 364200309Sjhb v86int(); 365292682Sjhb if (V86_CY(v86.efl) || (v86.eax != SMAP_SIG)) 366200309Sjhb break; 367200309Sjhb /* look for a low-memory segment that's large enough */ 368200309Sjhb if ((smap.type == SMAP_TYPE_MEMORY) && (smap.base == 0) && 369200309Sjhb (smap.length >= (512 * 1024))) 370200309Sjhb bios_basemem = smap.length; 371200309Sjhb /* look for the first segment in 'extended' memory */ 372200309Sjhb if ((smap.type == SMAP_TYPE_MEMORY) && (smap.base == 0x100000)) { 373200309Sjhb bios_extmem = smap.length; 374200309Sjhb } 375200309Sjhb 376200309Sjhb /* 377200309Sjhb * Look for the largest segment in 'extended' memory beyond 378200309Sjhb * 1MB but below 4GB. 379200309Sjhb */ 380200309Sjhb if ((smap.type == SMAP_TYPE_MEMORY) && (smap.base > 0x100000) && 381200309Sjhb (smap.base < 0x100000000ull)) { 382200309Sjhb size = smap.length; 383200309Sjhb 384200309Sjhb /* 385200309Sjhb * If this segment crosses the 4GB boundary, truncate it. 386200309Sjhb */ 387200309Sjhb if (smap.base + size > 0x100000000ull) 388200309Sjhb size = 0x100000000ull - smap.base; 389200309Sjhb 390200309Sjhb if (size > high_heap_size) { 391200309Sjhb high_heap_size = size; 392200309Sjhb high_heap_base = smap.base; 393200309Sjhb } 394200309Sjhb } 395200309Sjhb } while (v86.ebx != 0); 396200309Sjhb 397200309Sjhb /* Fall back to the old compatibility function for base memory */ 398200309Sjhb if (bios_basemem == 0) { 399200309Sjhb v86.ctl = 0; 400200309Sjhb v86.addr = 0x12; /* int 0x12 */ 401200309Sjhb v86int(); 402200309Sjhb 403200309Sjhb bios_basemem = (v86.eax & 0xffff) * 1024; 404200309Sjhb } 405200309Sjhb 406200309Sjhb /* Fall back through several compatibility functions for extended memory */ 407200309Sjhb if (bios_extmem == 0) { 408200309Sjhb v86.ctl = V86_FLAGS; 409200309Sjhb v86.addr = 0x15; /* int 0x15 function 0xe801*/ 410200309Sjhb v86.eax = 0xe801; 411200309Sjhb v86int(); 412292682Sjhb if (!V86_CY(v86.efl)) { 413200309Sjhb bios_extmem = ((v86.ecx & 0xffff) + ((v86.edx & 0xffff) * 64)) * 1024; 414200309Sjhb } 415200309Sjhb } 416200309Sjhb if (bios_extmem == 0) { 417200309Sjhb v86.ctl = 0; 418200309Sjhb v86.addr = 0x15; /* int 0x15 function 0x88*/ 419200309Sjhb v86.eax = 0x8800; 420200309Sjhb v86int(); 421200309Sjhb bios_extmem = (v86.eax & 0xffff) * 1024; 422200309Sjhb } 423200309Sjhb 424200309Sjhb /* 425200309Sjhb * If we have extended memory and did not find a suitable heap 426200309Sjhb * region in the SMAP, use the last 3MB of 'extended' memory as a 427200309Sjhb * high heap candidate. 428200309Sjhb */ 429200309Sjhb if (bios_extmem >= HEAP_MIN && high_heap_size < HEAP_MIN) { 430200309Sjhb high_heap_size = HEAP_MIN; 431200309Sjhb high_heap_base = bios_extmem + 0x100000 - HEAP_MIN; 432200309Sjhb } 433296963Sallanjude} 434200309Sjhb 435185029Spjd/* 436185029Spjd * Try to detect a device supported by the legacy int13 BIOS 437185029Spjd */ 438185029Spjdstatic int 439185029Spjdint13probe(int drive) 440185029Spjd{ 441185029Spjd v86.ctl = V86_FLAGS; 442185029Spjd v86.addr = 0x13; 443185029Spjd v86.eax = 0x800; 444185029Spjd v86.edx = drive; 445185029Spjd v86int(); 446185029Spjd 447292682Sjhb if (!V86_CY(v86.efl) && /* carry clear */ 448185029Spjd ((v86.edx & 0xff) != (drive & DRV_MASK))) { /* unit # OK */ 449185029Spjd if ((v86.ecx & 0x3f) == 0) { /* absurd sector size */ 450185029Spjd return(0); /* skip device */ 451185029Spjd } 452185029Spjd return (1); 453185029Spjd } 454185029Spjd return(0); 455185029Spjd} 456185029Spjd 457192194Sdfr/* 458192194Sdfr * We call this when we find a ZFS vdev - ZFS consumes the dsk 459192194Sdfr * structure so we must make a new one. 460192194Sdfr */ 461192194Sdfrstatic struct dsk * 462192194Sdfrcopy_dsk(struct dsk *dsk) 463192194Sdfr{ 464192194Sdfr struct dsk *newdsk; 465192194Sdfr 466192194Sdfr newdsk = malloc(sizeof(struct dsk)); 467192194Sdfr *newdsk = *dsk; 468192194Sdfr return (newdsk); 469192194Sdfr} 470192194Sdfr 471185029Spjdstatic void 472241294Savgprobe_drive(struct dsk *dsk) 473185029Spjd{ 474185096Sdfr#ifdef GPT 475185096Sdfr struct gpt_hdr hdr; 476185096Sdfr struct gpt_ent *ent; 477185096Sdfr unsigned part, entries_per_sec; 478299997Speter daddr_t slba; 479185096Sdfr#endif 480299997Speter#if defined(GPT) || defined(LOADER_GELI_SUPPORT) 481299997Speter daddr_t elba; 482299660Sngie#endif 483299997Speter 484185029Spjd struct dos_partition *dp; 485185029Spjd char *sec; 486185029Spjd unsigned i; 487185029Spjd 488185029Spjd /* 489296963Sallanjude * If we find a vdev on the whole disk, stop here. 490185029Spjd */ 491241294Savg if (vdev_probe(vdev_read, dsk, NULL) == 0) 492185029Spjd return; 493185029Spjd 494296963Sallanjude#ifdef LOADER_GELI_SUPPORT 495296963Sallanjude /* 496296963Sallanjude * Taste the disk, if it is GELI encrypted, decrypt it and check to see if 497296963Sallanjude * it is a usable vdev then. Otherwise dig 498296963Sallanjude * out the partition table and probe each slice/partition 499296963Sallanjude * in turn for a vdev or GELI encrypted vdev. 500296963Sallanjude */ 501296963Sallanjude elba = drvsize(dsk); 502296963Sallanjude if (elba > 0) { 503296963Sallanjude elba--; 504296963Sallanjude } 505296963Sallanjude if (geli_taste(vdev_read, dsk, elba) == 0) { 506329099Skevans if (geli_havekey(dsk) == 0 || geli_passphrase(&gelipw, dsk->unit, 507329099Skevans ':', 0, dsk) == 0) { 508296963Sallanjude if (vdev_probe(vdev_read, dsk, NULL) == 0) { 509296963Sallanjude return; 510296963Sallanjude } 511296963Sallanjude } 512296963Sallanjude } 513296963Sallanjude#endif /* LOADER_GELI_SUPPORT */ 514296963Sallanjude 515185029Spjd sec = dmadat->secbuf; 516185029Spjd dsk->start = 0; 517185096Sdfr 518185096Sdfr#ifdef GPT 519185096Sdfr /* 520185096Sdfr * First check for GPT. 521185096Sdfr */ 522185096Sdfr if (drvread(dsk, sec, 1, 1)) { 523185096Sdfr return; 524185096Sdfr } 525185096Sdfr memcpy(&hdr, sec, sizeof(hdr)); 526185096Sdfr if (memcmp(hdr.hdr_sig, GPT_HDR_SIG, sizeof(hdr.hdr_sig)) != 0 || 527185096Sdfr hdr.hdr_lba_self != 1 || hdr.hdr_revision < 0x00010000 || 528185096Sdfr hdr.hdr_entsz < sizeof(*ent) || DEV_BSIZE % hdr.hdr_entsz != 0) { 529185096Sdfr goto trymbr; 530185096Sdfr } 531185096Sdfr 532185096Sdfr /* 533298826Spfg * Probe all GPT partitions for the presence of ZFS pools. We 534185096Sdfr * return the spa_t for the first we find (if requested). This 535185096Sdfr * will have the effect of booting from the first pool on the 536185096Sdfr * disk. 537296963Sallanjude * 538296963Sallanjude * If no vdev is found, GELI decrypting the device and try again 539185096Sdfr */ 540185096Sdfr entries_per_sec = DEV_BSIZE / hdr.hdr_entsz; 541185096Sdfr slba = hdr.hdr_lba_table; 542185096Sdfr elba = slba + hdr.hdr_entries / entries_per_sec; 543185096Sdfr while (slba < elba) { 544198420Srnoland dsk->start = 0; 545185096Sdfr if (drvread(dsk, sec, slba, 1)) 546185096Sdfr return; 547185096Sdfr for (part = 0; part < entries_per_sec; part++) { 548185096Sdfr ent = (struct gpt_ent *)(sec + part * hdr.hdr_entsz); 549185096Sdfr if (memcmp(&ent->ent_type, &freebsd_zfs_uuid, 550185096Sdfr sizeof(uuid_t)) == 0) { 551185096Sdfr dsk->start = ent->ent_lba_start; 552296963Sallanjude dsk->slice = part + 1; 553296963Sallanjude dsk->part = 255; 554241294Savg if (vdev_probe(vdev_read, dsk, NULL) == 0) { 555185096Sdfr /* 556185096Sdfr * This slice had a vdev. We need a new dsk 557185096Sdfr * structure now since the vdev now owns this one. 558185096Sdfr */ 559192194Sdfr dsk = copy_dsk(dsk); 560185096Sdfr } 561296963Sallanjude#ifdef LOADER_GELI_SUPPORT 562296963Sallanjude else if (geli_taste(vdev_read, dsk, ent->ent_lba_end - 563296963Sallanjude ent->ent_lba_start) == 0) { 564329099Skevans if (geli_havekey(dsk) == 0 || geli_passphrase(&gelipw, 565329099Skevans dsk->unit, 'p', dsk->slice, dsk) == 0) { 566296963Sallanjude /* 567296963Sallanjude * This slice has GELI, check it for ZFS. 568296963Sallanjude */ 569296963Sallanjude if (vdev_probe(vdev_read, dsk, NULL) == 0) { 570296963Sallanjude /* 571296963Sallanjude * This slice had a vdev. We need a new dsk 572296963Sallanjude * structure now since the vdev now owns this one. 573296963Sallanjude */ 574296963Sallanjude dsk = copy_dsk(dsk); 575296963Sallanjude } 576296963Sallanjude break; 577296963Sallanjude } 578296963Sallanjude } 579296963Sallanjude#endif /* LOADER_GELI_SUPPORT */ 580185096Sdfr } 581185096Sdfr } 582185096Sdfr slba++; 583185096Sdfr } 584185096Sdfr return; 585185096Sdfrtrymbr: 586296963Sallanjude#endif /* GPT */ 587185096Sdfr 588185029Spjd if (drvread(dsk, sec, DOSBBSECTOR, 1)) 589185029Spjd return; 590185029Spjd dp = (void *)(sec + DOSPARTOFF); 591185029Spjd 592185029Spjd for (i = 0; i < NDOSPART; i++) { 593185029Spjd if (!dp[i].dp_typ) 594185029Spjd continue; 595185029Spjd dsk->start = dp[i].dp_start; 596296963Sallanjude dsk->slice = i + 1; 597241294Savg if (vdev_probe(vdev_read, dsk, NULL) == 0) { 598192194Sdfr dsk = copy_dsk(dsk); 599185029Spjd } 600296963Sallanjude#ifdef LOADER_GELI_SUPPORT 601296963Sallanjude else if (geli_taste(vdev_read, dsk, dp[i].dp_size - 602296963Sallanjude dp[i].dp_start) == 0) { 603329099Skevans if (geli_havekey(dsk) == 0 || geli_passphrase(&gelipw, dsk->unit, 604329099Skevans 's', i, dsk) == 0) { 605296963Sallanjude /* 606296963Sallanjude * This slice has GELI, check it for ZFS. 607296963Sallanjude */ 608296963Sallanjude if (vdev_probe(vdev_read, dsk, NULL) == 0) { 609296963Sallanjude /* 610296963Sallanjude * This slice had a vdev. We need a new dsk 611296963Sallanjude * structure now since the vdev now owns this one. 612296963Sallanjude */ 613296963Sallanjude dsk = copy_dsk(dsk); 614296963Sallanjude } 615296963Sallanjude break; 616296963Sallanjude } 617296963Sallanjude } 618296963Sallanjude#endif /* LOADER_GELI_SUPPORT */ 619185029Spjd } 620185029Spjd} 621185029Spjd 622185029Spjdint 623185029Spjdmain(void) 624185029Spjd{ 625185029Spjd dnode_phys_t dn; 626185029Spjd off_t off; 627185029Spjd struct dsk *dsk; 628308914Savg int autoboot, i; 629308914Savg int nextboot; 630308914Savg int rc; 631185029Spjd 632208388Sjhb dmadat = (void *)(roundup2(__base + (int32_t)&_end, 0x10000) - __base); 633208388Sjhb 634200309Sjhb bios_getmem(); 635200309Sjhb 636200309Sjhb if (high_heap_size > 0) { 637200309Sjhb heap_end = PTOV(high_heap_base + high_heap_size); 638200309Sjhb heap_next = PTOV(high_heap_base); 639200309Sjhb } else { 640296963Sallanjude heap_next = (char *)dmadat + sizeof(*dmadat); 641296963Sallanjude heap_end = (char *)PTOV(bios_basemem); 642200309Sjhb } 643200309Sjhb 644185029Spjd dsk = malloc(sizeof(struct dsk)); 645185029Spjd dsk->drive = *(uint8_t *)PTOV(ARGS); 646185029Spjd dsk->type = dsk->drive & DRV_HARD ? TYPE_AD : TYPE_FD; 647185029Spjd dsk->unit = dsk->drive & DRV_MASK; 648185029Spjd dsk->slice = *(uint8_t *)PTOV(ARGS + 1) + 1; 649185029Spjd dsk->part = 0; 650185029Spjd dsk->start = 0; 651185029Spjd dsk->init = 0; 652185029Spjd 653185029Spjd bootinfo.bi_version = BOOTINFO_VERSION; 654185029Spjd bootinfo.bi_size = sizeof(bootinfo); 655200309Sjhb bootinfo.bi_basemem = bios_basemem / 1024; 656200309Sjhb bootinfo.bi_extmem = bios_extmem / 1024; 657185029Spjd bootinfo.bi_memsizes_valid++; 658185029Spjd bootinfo.bi_bios_dev = dsk->drive; 659185029Spjd 660185029Spjd bootdev = MAKEBOOTDEV(dev_maj[dsk->type], 661305614Spfg dsk->slice, dsk->unit, dsk->part); 662185029Spjd 663185029Spjd /* Process configuration file */ 664185029Spjd 665185029Spjd autoboot = 1; 666185029Spjd 667296963Sallanjude#ifdef LOADER_GELI_SUPPORT 668296963Sallanjude geli_init(); 669296963Sallanjude#endif 670185029Spjd zfs_init(); 671185029Spjd 672185029Spjd /* 673185029Spjd * Probe the boot drive first - we will try to boot from whatever 674185029Spjd * pool we find on that drive. 675185029Spjd */ 676241294Savg probe_drive(dsk); 677185029Spjd 678185029Spjd /* 679185029Spjd * Probe the rest of the drives that the bios knows about. This 680185029Spjd * will find any other available pools and it may fill in missing 681185029Spjd * vdevs for the boot pool. 682185029Spjd */ 683212805Spjd#ifndef VIRTUALBOX 684212805Spjd for (i = 0; i < *(unsigned char *)PTOV(BIOS_NUMDRIVES); i++) 685212805Spjd#else 686212805Spjd for (i = 0; i < MAXBDDEV; i++) 687212805Spjd#endif 688212805Spjd { 689185029Spjd if ((i | DRV_HARD) == *(uint8_t *)PTOV(ARGS)) 690185029Spjd continue; 691185029Spjd 692192194Sdfr if (!int13probe(i | DRV_HARD)) 693192194Sdfr break; 694192194Sdfr 695185029Spjd dsk = malloc(sizeof(struct dsk)); 696185029Spjd dsk->drive = i | DRV_HARD; 697185029Spjd dsk->type = dsk->drive & TYPE_AD; 698185029Spjd dsk->unit = i; 699185029Spjd dsk->slice = 0; 700185029Spjd dsk->part = 0; 701185029Spjd dsk->start = 0; 702185029Spjd dsk->init = 0; 703241294Savg probe_drive(dsk); 704185029Spjd } 705185029Spjd 706185029Spjd /* 707241294Savg * The first discovered pool, if any, is the pool. 708185029Spjd */ 709241294Savg spa = spa_get_primary(); 710185029Spjd if (!spa) { 711241294Savg printf("%s: No ZFS pools located, can't boot\n", BOOTPROG); 712241294Savg for (;;) 713241294Savg ; 714185029Spjd } 715185029Spjd 716241293Savg primary_spa = spa; 717241293Savg primary_vdev = spa_get_primary_vdev(spa); 718241293Savg 719308914Savg nextboot = 0; 720308914Savg rc = vdev_read_pad2(primary_vdev, cmd, sizeof(cmd)); 721308914Savg if (vdev_clear_pad2(primary_vdev)) 722308914Savg printf("failed to clear pad2 area of primary vdev\n"); 723308914Savg if (rc == 0) { 724308914Savg if (*cmd) { 725308914Savg /* 726308914Savg * We could find an old-style ZFS Boot Block header here. 727308914Savg * Simply ignore it. 728308914Savg */ 729308914Savg if (*(uint64_t *)cmd != 0x2f5b007b10c) { 730308914Savg /* 731308914Savg * Note that parse() is destructive to cmd[] and we also want 732308914Savg * to honor RBX_QUIET option that could be present in cmd[]. 733308914Savg */ 734308914Savg nextboot = 1; 735308914Savg memcpy(cmddup, cmd, sizeof(cmd)); 736329099Skevans if (parse_cmd()) { 737308914Savg printf("failed to parse pad2 area of primary vdev\n"); 738308914Savg reboot(); 739308914Savg } 740308914Savg if (!OPT_CHECK(RBX_QUIET)) 741308914Savg printf("zfs nextboot: %s\n", cmddup); 742308914Savg } 743308914Savg /* Do not process this command twice */ 744308914Savg *cmd = 0; 745308914Savg } 746308914Savg } else 747308914Savg printf("failed to read pad2 area of primary vdev\n"); 748308914Savg 749308914Savg /* Mount ZFS only if it's not already mounted via nextboot parsing. */ 750308914Savg if (zfsmount.spa == NULL && 751308914Savg (zfs_spa_init(spa) != 0 || zfs_mount(spa, 0, &zfsmount) != 0)) { 752235329Savg printf("%s: failed to mount default pool %s\n", 753235329Savg BOOTPROG, spa->spa_name); 754235329Savg autoboot = 0; 755235329Savg } else if (zfs_lookup(&zfsmount, PATH_CONFIG, &dn) == 0 || 756235329Savg zfs_lookup(&zfsmount, PATH_DOTCONFIG, &dn) == 0) { 757185029Spjd off = 0; 758198079Sjhb zfs_read(spa, &dn, &off, cmd, sizeof(cmd)); 759185029Spjd } 760185029Spjd 761185029Spjd if (*cmd) { 762234339Savg /* 763329099Skevans * Note that parse_cmd() is destructive to cmd[] and we also want 764234339Savg * to honor RBX_QUIET option that could be present in cmd[]. 765234339Savg */ 766234339Savg memcpy(cmddup, cmd, sizeof(cmd)); 767329099Skevans if (parse_cmd()) 768185029Spjd autoboot = 0; 769234339Savg if (!OPT_CHECK(RBX_QUIET)) 770241288Savg printf("%s: %s\n", PATH_CONFIG, cmddup); 771185029Spjd /* Do not process this command twice */ 772185029Spjd *cmd = 0; 773185029Spjd } 774185029Spjd 775308914Savg /* Do not risk waiting at the prompt forever. */ 776308914Savg if (nextboot && !autoboot) 777308914Savg reboot(); 778308914Savg 779185029Spjd /* 780294925Simp * Try to exec /boot/loader. If interrupted by a keypress, 781185029Spjd * or in case of failure, try to load a kernel directly instead. 782185029Spjd */ 783185029Spjd 784185029Spjd if (autoboot && !*kname) { 785294925Simp memcpy(kname, PATH_LOADER_ZFS, sizeof(PATH_LOADER_ZFS)); 786213136Spjd if (!keyhit(3)) { 787185029Spjd load(); 788185029Spjd memcpy(kname, PATH_KERNEL, sizeof(PATH_KERNEL)); 789185029Spjd } 790185029Spjd } 791185029Spjd 792185029Spjd /* Present the user with the boot2 prompt. */ 793185029Spjd 794185029Spjd for (;;) { 795235329Savg if (!autoboot || !OPT_CHECK(RBX_QUIET)) { 796235329Savg printf("\nFreeBSD/x86 boot\n"); 797235329Savg if (zfs_rlookup(spa, zfsmount.rootobj, rootname) != 0) 798241288Savg printf("Default: %s/<0x%llx>:%s\n" 799235329Savg "boot: ", 800235329Savg spa->spa_name, zfsmount.rootobj, kname); 801241288Savg else if (rootname[0] != '\0') 802241288Savg printf("Default: %s/%s:%s\n" 803241288Savg "boot: ", 804241288Savg spa->spa_name, rootname, kname); 805235329Savg else 806241288Savg printf("Default: %s:%s\n" 807235329Savg "boot: ", 808241288Savg spa->spa_name, kname); 809235329Savg } 810185029Spjd if (ioctrl & IO_SERIAL) 811185029Spjd sio_flush(); 812213136Spjd if (!autoboot || keyhit(5)) 813213136Spjd getstr(cmd, sizeof(cmd)); 814185029Spjd else if (!autoboot || !OPT_CHECK(RBX_QUIET)) 815185029Spjd putchar('\n'); 816185029Spjd autoboot = 0; 817329099Skevans if (parse_cmd()) 818185029Spjd putchar('\a'); 819185029Spjd else 820185029Spjd load(); 821185029Spjd } 822185029Spjd} 823185029Spjd 824185029Spjd/* XXX - Needed for btxld to link the boot2 binary; do not remove. */ 825185029Spjdvoid 826185029Spjdexit(int x) 827185029Spjd{ 828308914Savg __exit(x); 829185029Spjd} 830185029Spjd 831308914Savgvoid 832308914Savgreboot(void) 833308914Savg{ 834308914Savg __exit(0); 835308914Savg} 836308914Savg 837185029Spjdstatic void 838185029Spjdload(void) 839185029Spjd{ 840185029Spjd union { 841185029Spjd struct exec ex; 842185029Spjd Elf32_Ehdr eh; 843185029Spjd } hdr; 844185029Spjd static Elf32_Phdr ep[2]; 845185029Spjd static Elf32_Shdr es[2]; 846185029Spjd caddr_t p; 847185029Spjd dnode_phys_t dn; 848185029Spjd off_t off; 849185029Spjd uint32_t addr, x; 850185029Spjd int fmt, i, j; 851185029Spjd 852235329Savg if (zfs_lookup(&zfsmount, kname, &dn)) { 853235329Savg printf("\nCan't find %s\n", kname); 854185029Spjd return; 855185029Spjd } 856185029Spjd off = 0; 857185029Spjd if (xfsread(&dn, &off, &hdr, sizeof(hdr))) 858185029Spjd return; 859185029Spjd if (N_GETMAGIC(hdr.ex) == ZMAGIC) 860185029Spjd fmt = 0; 861185029Spjd else if (IS_ELF(hdr.eh)) 862185029Spjd fmt = 1; 863185029Spjd else { 864185029Spjd printf("Invalid %s\n", "format"); 865185029Spjd return; 866185029Spjd } 867185029Spjd if (fmt == 0) { 868185029Spjd addr = hdr.ex.a_entry & 0xffffff; 869185029Spjd p = PTOV(addr); 870185029Spjd off = PAGE_SIZE; 871185029Spjd if (xfsread(&dn, &off, p, hdr.ex.a_text)) 872185029Spjd return; 873185029Spjd p += roundup2(hdr.ex.a_text, PAGE_SIZE); 874185029Spjd if (xfsread(&dn, &off, p, hdr.ex.a_data)) 875185029Spjd return; 876185029Spjd p += hdr.ex.a_data + roundup2(hdr.ex.a_bss, PAGE_SIZE); 877185029Spjd bootinfo.bi_symtab = VTOP(p); 878185029Spjd memcpy(p, &hdr.ex.a_syms, sizeof(hdr.ex.a_syms)); 879185029Spjd p += sizeof(hdr.ex.a_syms); 880185029Spjd if (hdr.ex.a_syms) { 881185029Spjd if (xfsread(&dn, &off, p, hdr.ex.a_syms)) 882185029Spjd return; 883185029Spjd p += hdr.ex.a_syms; 884185029Spjd if (xfsread(&dn, &off, p, sizeof(int))) 885185029Spjd return; 886185029Spjd x = *(uint32_t *)p; 887185029Spjd p += sizeof(int); 888185029Spjd x -= sizeof(int); 889185029Spjd if (xfsread(&dn, &off, p, x)) 890185029Spjd return; 891185029Spjd p += x; 892185029Spjd } 893185029Spjd } else { 894185029Spjd off = hdr.eh.e_phoff; 895185029Spjd for (j = i = 0; i < hdr.eh.e_phnum && j < 2; i++) { 896185029Spjd if (xfsread(&dn, &off, ep + j, sizeof(ep[0]))) 897185029Spjd return; 898185029Spjd if (ep[j].p_type == PT_LOAD) 899185029Spjd j++; 900185029Spjd } 901185029Spjd for (i = 0; i < 2; i++) { 902185029Spjd p = PTOV(ep[i].p_paddr & 0xffffff); 903185029Spjd off = ep[i].p_offset; 904185029Spjd if (xfsread(&dn, &off, p, ep[i].p_filesz)) 905185029Spjd return; 906185029Spjd } 907185029Spjd p += roundup2(ep[1].p_memsz, PAGE_SIZE); 908185029Spjd bootinfo.bi_symtab = VTOP(p); 909185029Spjd if (hdr.eh.e_shnum == hdr.eh.e_shstrndx + 3) { 910185029Spjd off = hdr.eh.e_shoff + sizeof(es[0]) * 911185029Spjd (hdr.eh.e_shstrndx + 1); 912185029Spjd if (xfsread(&dn, &off, &es, sizeof(es))) 913185029Spjd return; 914185029Spjd for (i = 0; i < 2; i++) { 915185029Spjd memcpy(p, &es[i].sh_size, sizeof(es[i].sh_size)); 916185029Spjd p += sizeof(es[i].sh_size); 917185029Spjd off = es[i].sh_offset; 918185029Spjd if (xfsread(&dn, &off, p, es[i].sh_size)) 919185029Spjd return; 920185029Spjd p += es[i].sh_size; 921185029Spjd } 922185029Spjd } 923185029Spjd addr = hdr.eh.e_entry & 0xffffff; 924185029Spjd } 925185029Spjd bootinfo.bi_esymtab = VTOP(p); 926185029Spjd bootinfo.bi_kernelname = VTOP(kname); 927235329Savg zfsargs.size = sizeof(zfsargs); 928235329Savg zfsargs.pool = zfsmount.spa->spa_guid; 929235329Savg zfsargs.root = zfsmount.rootobj; 930241293Savg zfsargs.primary_pool = primary_spa->spa_guid; 931296963Sallanjude#ifdef LOADER_GELI_SUPPORT 932329099Skevans explicit_bzero(gelipw, sizeof(gelipw)); 933329099Skevans gelibuf = malloc(sizeof(struct keybuf) + (GELI_MAX_KEYS * sizeof(struct keybuf_ent))); 934329099Skevans geli_fill_keybuf(gelibuf); 935329099Skevans zfsargs.notapw = '\0'; 936329099Skevans zfsargs.keybuf_sentinel = KEYBUF_SENTINEL; 937329099Skevans zfsargs.keybuf = gelibuf; 938296963Sallanjude#else 939296963Sallanjude zfsargs.gelipw[0] = '\0'; 940296963Sallanjude#endif 941241293Savg if (primary_vdev != NULL) 942241293Savg zfsargs.primary_vdev = primary_vdev->v_guid; 943241293Savg else 944241293Savg printf("failed to detect primary vdev\n"); 945185029Spjd __exec((caddr_t)addr, RB_BOOTINFO | (opts & RBX_MASK), 946185029Spjd bootdev, 947235329Savg KARGS_FLAGS_ZFS | KARGS_FLAGS_EXTARG, 948185029Spjd (uint32_t) spa->spa_guid, 949185029Spjd (uint32_t) (spa->spa_guid >> 32), 950235329Savg VTOP(&bootinfo), 951235329Savg zfsargs); 952185029Spjd} 953185029Spjd 954185029Spjdstatic int 955241288Savgzfs_mount_ds(char *dsname) 956241288Savg{ 957241288Savg uint64_t newroot; 958241288Savg spa_t *newspa; 959241288Savg char *q; 960241288Savg 961241288Savg q = strchr(dsname, '/'); 962241288Savg if (q) 963241288Savg *q++ = '\0'; 964241288Savg newspa = spa_find_by_name(dsname); 965241288Savg if (newspa == NULL) { 966241288Savg printf("\nCan't find ZFS pool %s\n", dsname); 967241288Savg return -1; 968241288Savg } 969241288Savg 970241288Savg if (zfs_spa_init(newspa)) 971241288Savg return -1; 972241288Savg 973241288Savg newroot = 0; 974241288Savg if (q) { 975241288Savg if (zfs_lookup_dataset(newspa, q, &newroot)) { 976241288Savg printf("\nCan't find dataset %s in ZFS pool %s\n", 977241288Savg q, newspa->spa_name); 978241288Savg return -1; 979241288Savg } 980241288Savg } 981241288Savg if (zfs_mount(newspa, newroot, &zfsmount)) { 982241288Savg printf("\nCan't mount ZFS dataset\n"); 983241288Savg return -1; 984241288Savg } 985241288Savg spa = newspa; 986241288Savg return (0); 987241288Savg} 988241288Savg 989241288Savgstatic int 990329099Skevansparse_cmd(void) 991185029Spjd{ 992185029Spjd char *arg = cmd; 993185029Spjd char *ep, *p, *q; 994185029Spjd const char *cp; 995185029Spjd int c, i, j; 996185029Spjd 997185029Spjd while ((c = *arg++)) { 998185029Spjd if (c == ' ' || c == '\t' || c == '\n') 999185029Spjd continue; 1000185029Spjd for (p = arg; *p && *p != '\n' && *p != ' ' && *p != '\t'; p++); 1001185029Spjd ep = p; 1002185029Spjd if (*p) 1003185029Spjd *p++ = 0; 1004185029Spjd if (c == '-') { 1005185029Spjd while ((c = *arg++)) { 1006185029Spjd if (c == 'P') { 1007185029Spjd if (*(uint8_t *)PTOV(0x496) & 0x10) { 1008185029Spjd cp = "yes"; 1009185029Spjd } else { 1010185029Spjd opts |= OPT_SET(RBX_DUAL) | OPT_SET(RBX_SERIAL); 1011185029Spjd cp = "no"; 1012185029Spjd } 1013185029Spjd printf("Keyboard: %s\n", cp); 1014185029Spjd continue; 1015185029Spjd } else if (c == 'S') { 1016185029Spjd j = 0; 1017185029Spjd while ((unsigned int)(i = *arg++ - '0') <= 9) 1018185029Spjd j = j * 10 + i; 1019185029Spjd if (j > 0 && i == -'0') { 1020185029Spjd comspeed = j; 1021185029Spjd break; 1022185029Spjd } 1023185029Spjd /* Fall through to error below ('S' not in optstr[]). */ 1024185029Spjd } 1025185029Spjd for (i = 0; c != optstr[i]; i++) 1026185029Spjd if (i == NOPT - 1) 1027185029Spjd return -1; 1028185029Spjd opts ^= OPT_SET(flags[i]); 1029185029Spjd } 1030185029Spjd ioctrl = OPT_CHECK(RBX_DUAL) ? (IO_SERIAL|IO_KEYBOARD) : 1031185029Spjd OPT_CHECK(RBX_SERIAL) ? IO_SERIAL : IO_KEYBOARD; 1032241301Savg if (ioctrl & IO_SERIAL) { 1033241301Savg if (sio_init(115200 / comspeed) != 0) 1034241301Savg ioctrl &= ~IO_SERIAL; 1035241301Savg } 1036185029Spjd } if (c == '?') { 1037185029Spjd dnode_phys_t dn; 1038185029Spjd 1039235329Savg if (zfs_lookup(&zfsmount, arg, &dn) == 0) { 1040185029Spjd zap_list(spa, &dn); 1041185029Spjd } 1042185029Spjd return -1; 1043185029Spjd } else { 1044185029Spjd arg--; 1045185029Spjd 1046185029Spjd /* 1047185029Spjd * Report pool status if the comment is 'status'. Lets 1048185029Spjd * hope no-one wants to load /status as a kernel. 1049185029Spjd */ 1050185029Spjd if (!strcmp(arg, "status")) { 1051185029Spjd spa_all_status(); 1052185029Spjd return -1; 1053185029Spjd } 1054185029Spjd 1055185029Spjd /* 1056241288Savg * If there is "zfs:" prefix simply ignore it. 1057241288Savg */ 1058241288Savg if (strncmp(arg, "zfs:", 4) == 0) 1059241288Savg arg += 4; 1060241288Savg 1061241288Savg /* 1062185029Spjd * If there is a colon, switch pools. 1063185029Spjd */ 1064241288Savg q = strchr(arg, ':'); 1065185029Spjd if (q) { 1066241288Savg *q++ = '\0'; 1067241288Savg if (zfs_mount_ds(arg) != 0) 1068185029Spjd return -1; 1069241288Savg arg = q; 1070185029Spjd } 1071185029Spjd if ((i = ep - arg)) { 1072185029Spjd if ((size_t)i >= sizeof(kname)) 1073185029Spjd return -1; 1074185029Spjd memcpy(kname, arg, i + 1); 1075185029Spjd } 1076185029Spjd } 1077185029Spjd arg = p; 1078185029Spjd } 1079185029Spjd return 0; 1080185029Spjd} 1081