--- /dev/null
+/* $OpenBSD: i386_installboot.c,v 1.1 2013/12/27 13:52:40 jsing Exp $ */
+/* $NetBSD: installboot.c,v 1.5 1995/11/17 23:23:50 gwr Exp $ */
+
+/*
+ * Copyright (c) 2011 Joel Sing <jsing@openbsd.org>
+ * Copyright (c) 2010 Otto Moerbeek <otto@openbsd.org>
+ * Copyright (c) 2003 Tom Cosgrove <tom.cosgrove@arches-consulting.com>
+ * Copyright (c) 1997 Michael Shalayeff
+ * Copyright (c) 1994 Paul Kranenburg
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by Paul Kranenburg.
+ * 4. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/param.h>
+#include <sys/disklabel.h>
+#include <sys/dkio.h>
+#include <sys/exec_elf.h>
+#include <sys/ioctl.h>
+#include <sys/mount.h>
+#include <sys/reboot.h>
+#include <sys/stat.h>
+#include <sys/sysctl.h>
+#include <sys/time.h>
+
+#include <ufs/ufs/dinode.h>
+#include <ufs/ufs/dir.h>
+#include <ufs/ffs/fs.h>
+
+#include <uvm/uvm_extern.h>
+
+#include <machine/cpu.h>
+#include <machine/biosvar.h>
+
+#include <a.out.h>
+#include <err.h>
+#include <fcntl.h>
+#include <nlist.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <util.h>
+
+#include "installboot.h"
+#include "i386_installboot.h"
+
+char *blkstore;
+size_t blksize;
+
+struct sym_data pbr_symbols[] = {
+ {"_fs_bsize_p", 2},
+ {"_fs_bsize_s", 2},
+ {"_fsbtodb", 1},
+ {"_p_offset", 4},
+ {"_inodeblk", 4},
+ {"_inodedbl", 4},
+ {"_nblocks", 2},
+ {NULL}
+};
+
+static void devread(int, void *, daddr_t, size_t, char *);
+static u_int findopenbsd(int, struct disklabel *);
+static int getbootparams(char *, int, struct disklabel *);
+static char *loadproto(char *, long *);
+
+/*
+ * Read information about /boot's inode and filesystem parameters, then
+ * put biosboot (partition boot record) on the target drive with these
+ * parameters patched in.
+ */
+
+void
+md_init(void)
+{
+ stages = 2;
+ stage1 = "/usr/mdec/biosboot";
+ stage2 = "/boot";
+}
+
+void
+md_loadboot(void)
+{
+ /* Load prototype boot blocks. */
+ if ((blkstore = loadproto(stage1, &blksize)) == NULL)
+ exit(1);
+
+ /* XXX - Paranoia: Make sure size is aligned! */
+ if (blksize & (DEV_BSIZE - 1))
+ errx(1, "proto %s bad size=%ld", stage1, blksize);
+
+ if (blksize > SBSIZE - DEV_BSIZE)
+ errx(1, "proto bootblocks too big");
+}
+
+void
+md_installboot(int devfd, char *dev)
+{
+ struct disklabel dl;
+
+ /* Get and check disklabel. */
+ if (ioctl(devfd, DIOCGDINFO, &dl) != 0)
+ err(1, "disklabel: %s", dev);
+ if (dl.d_magic != DISKMAGIC)
+ errx(1, "bad disklabel magic=0x%08x", dl.d_magic);
+
+ /* Warn on unknown disklabel types. */
+ if (dl.d_type == 0)
+ warnx("disklabel type unknown");
+
+ /* Get bootstrap parameters to patch into proto. */
+ if (getbootparams(stage2, devfd, &dl) != 0)
+ exit(1);
+
+ /* Write boot blocks to device. */
+ write_bootblocks(devfd, dev, &dl);
+}
+
+void
+write_bootblocks(int devfd, char *dev, struct disklabel *dl)
+{
+ struct stat sb;
+ u_int8_t *secbuf;
+ u_int start = 0;
+
+ /* Write patched proto bootblock(s) into the superblock. */
+ if (fstat(devfd, &sb) < 0)
+ err(1, "fstat: %s", dev);
+
+ if (!S_ISCHR(sb.st_mode))
+ errx(1, "%s: not a character device", dev);
+
+ /* Patch the parameters into the proto bootstrap sector. */
+ pbr_set_symbols(stage1, blkstore, pbr_symbols);
+
+ if (!nowrite) {
+ /* Sync filesystems (to clean in-memory superblock?). */
+ sync(); sleep(1);
+ }
+
+ /*
+ * Find OpenBSD partition. Floppies are special, getting an
+ * everything-in-one /boot starting at sector 0.
+ */
+ if (dl->d_type != DTYPE_FLOPPY) {
+ start = findopenbsd(devfd, dl);
+ if (start == (u_int)-1)
+ errx(1, "no OpenBSD partition");
+ }
+
+ if (verbose)
+ fprintf(stderr, "%s will be written at sector %u\n",
+ stage1, start);
+
+ if (start + (blksize / dl->d_secsize) > BOOTBIOS_MAXSEC)
+ warnx("%s extends beyond sector %u. OpenBSD might not boot.",
+ stage1, BOOTBIOS_MAXSEC);
+
+ if (!nowrite) {
+ if (lseek(devfd, (off_t)start * dl->d_secsize, SEEK_SET) < 0)
+ err(1, "seek bootstrap");
+ secbuf = calloc(1, dl->d_secsize);
+ bcopy(blkstore, secbuf, blksize);
+ if (write(devfd, secbuf, dl->d_secsize) != dl->d_secsize)
+ err(1, "write bootstrap");
+ free(secbuf);
+ }
+}
+
+u_int
+findopenbsd(int devfd, struct disklabel *dl)
+{
+ struct dos_mbr mbr;
+ u_int mbroff = DOSBBSECTOR;
+ u_int mbr_eoff = DOSBBSECTOR; /* Offset of extended part. */
+ struct dos_partition *dp;
+ u_int8_t *secbuf;
+ u_int maxebr = DOS_MAXEBR, nextebr;
+ int i;
+
+again:
+ if (!maxebr--) {
+ if (verbose)
+ fprintf(stderr, "Traversed more than %d Extended Boot "
+ "Records (EBRs)\n", DOS_MAXEBR);
+ return ((u_int)-1);
+ }
+
+ if (verbose)
+ fprintf(stderr, "%s boot record (%cBR) at sector %u\n",
+ (mbroff == DOSBBSECTOR) ? "master" : "extended",
+ (mbroff == DOSBBSECTOR) ? 'M' : 'E', mbroff);
+
+ secbuf = malloc(dl->d_secsize);
+ if (lseek(devfd, (off_t)mbroff * dl->d_secsize, SEEK_SET) < 0 ||
+ read(devfd, secbuf, dl->d_secsize) < (ssize_t)sizeof(mbr))
+ err(4, "can't read boot record");
+ bcopy(secbuf, &mbr, sizeof(mbr));
+ free(secbuf);
+
+ if (mbr.dmbr_sign != DOSMBR_SIGNATURE)
+ errx(1, "invalid boot record signature (0x%04X) @ sector %u",
+ mbr.dmbr_sign, mbroff);
+
+ nextebr = 0;
+ for (i = 0; i < NDOSPART; i++) {
+ dp = &mbr.dmbr_parts[i];
+ if (!dp->dp_size)
+ continue;
+
+ if (verbose)
+ fprintf(stderr,
+ "\tpartition %d: type 0x%02X offset %u size %u\n",
+ i, dp->dp_typ, dp->dp_start, dp->dp_size);
+
+ if (dp->dp_typ == DOSPTYP_OPENBSD) {
+ if (dp->dp_start > (dp->dp_start + mbroff))
+ continue;
+ return (dp->dp_start + mbroff);
+ }
+
+ if (!nextebr && (dp->dp_typ == DOSPTYP_EXTEND ||
+ dp->dp_typ == DOSPTYP_EXTENDL)) {
+ nextebr = dp->dp_start + mbr_eoff;
+ if (nextebr < dp->dp_start)
+ nextebr = (u_int)-1;
+ if (mbr_eoff == DOSBBSECTOR)
+ mbr_eoff = dp->dp_start;
+ }
+ }
+
+ if (nextebr && nextebr != (u_int)-1) {
+ mbroff = nextebr;
+ goto again;
+ }
+
+ return ((u_int)-1);
+}
+
+/*
+ * Load the prototype boot sector (biosboot) into memory.
+ */
+static char *
+loadproto(char *fname, long *size)
+{
+ int fd;
+ size_t tdsize; /* text+data size */
+ char *bp;
+ Elf_Ehdr eh;
+ Elf_Word phsize;
+ Elf_Phdr *ph;
+
+ if ((fd = open(fname, O_RDONLY)) < 0)
+ err(1, "%s", fname);
+
+ if (read(fd, &eh, sizeof(eh)) != sizeof(eh))
+ errx(1, "%s: read failed", fname);
+
+ if (!IS_ELF(eh))
+ errx(1, "%s: bad magic: 0x%02x%02x%02x%02x", fname,
+ eh.e_ident[EI_MAG0], eh.e_ident[EI_MAG1],
+ eh.e_ident[EI_MAG2], eh.e_ident[EI_MAG3]);
+
+ /*
+ * We have to include the exec header in the beginning of
+ * the buffer, and leave extra space at the end in case
+ * the actual write to disk wants to skip the header.
+ */
+
+ /* Program load header. */
+ if (eh.e_phnum != 1)
+ errx(1, "%s: %u ELF load sections (only support 1)",
+ fname, eh.e_phnum);
+
+ phsize = eh.e_phnum * sizeof(Elf_Phdr);
+ ph = malloc(phsize);
+ if (ph == NULL)
+ err(1, NULL);
+
+ lseek(fd, eh.e_phoff, SEEK_SET);
+
+ if (read(fd, ph, phsize) != phsize)
+ errx(1, "%s: can't read header", fname);
+
+ tdsize = ph->p_filesz;
+
+ /*
+ * Allocate extra space here because the caller may copy
+ * the boot block starting at the end of the exec header.
+ * This prevents reading beyond the end of the buffer.
+ */
+ if ((bp = calloc(tdsize, 1)) == NULL)
+ err(1, NULL);
+
+ /* Read the rest of the file. */
+ lseek(fd, ph->p_offset, SEEK_SET);
+ if (read(fd, bp, tdsize) != (ssize_t)tdsize)
+ errx(1, "%s: read failed", fname);
+
+ *size = tdsize; /* not aligned to DEV_BSIZE */
+
+ close(fd);
+ return bp;
+}
+
+static void
+devread(int fd, void *buf, daddr_t blk, size_t size, char *msg)
+{
+ if (lseek(fd, dbtob((off_t)blk), SEEK_SET) != dbtob((off_t)blk))
+ err(1, "%s: devread: lseek", msg);
+
+ if (read(fd, buf, size) != (ssize_t)size)
+ err(1, "%s: devread: read", msg);
+}
+
+static char sblock[SBSIZE];
+
+/*
+ * Read information about /boot's inode, then put this and filesystem
+ * parameters from the superblock into pbr_symbols.
+ */
+static int
+getbootparams(char *boot, int devfd, struct disklabel *dl)
+{
+ int fd;
+ struct stat statbuf, sb;
+ struct statfs statfsbuf;
+ struct partition *pp;
+ struct fs *fs;
+ char *buf;
+ u_int blk, *ap;
+ struct ufs1_dinode *ip;
+ int ndb;
+ int mib[3];
+ size_t size;
+ dev_t dev;
+
+ /*
+ * Open 2nd-level boot program and record enough details about
+ * where it is on the filesystem represented by `devfd'
+ * (inode block, offset within that block, and various filesystem
+ * parameters essentially taken from the superblock) for biosboot
+ * to be able to load it later.
+ */
+
+ /* Make sure the (probably new) boot file is on disk. */
+ sync(); sleep(1);
+
+ if ((fd = open(boot, O_RDONLY)) < 0)
+ err(1, "open: %s", boot);
+
+ if (fstatfs(fd, &statfsbuf) != 0)
+ err(1, "statfs: %s", boot);
+
+ if (strncmp(statfsbuf.f_fstypename, "ffs", MFSNAMELEN) &&
+ strncmp(statfsbuf.f_fstypename, "ufs", MFSNAMELEN) )
+ errx(1, "%s: not on an FFS filesystem", boot);
+
+#if 0
+ if (read(fd, &eh, sizeof(eh)) != sizeof(eh))
+ errx(1, "read: %s", boot);
+
+ if (!IS_ELF(eh)) {
+ errx(1, "%s: bad magic: 0x%02x%02x%02x%02x",
+ boot,
+ eh.e_ident[EI_MAG0], eh.e_ident[EI_MAG1],
+ eh.e_ident[EI_MAG2], eh.e_ident[EI_MAG3]);
+ }
+#endif
+
+ if (fsync(fd) != 0)
+ err(1, "fsync: %s", boot);
+
+ if (fstat(fd, &statbuf) != 0)
+ err(1, "fstat: %s", boot);
+
+ if (fstat(devfd, &sb) != 0)
+ err(1, "fstat: %d", devfd);
+
+ /* Check devices. */
+ mib[0] = CTL_MACHDEP;
+ mib[1] = CPU_CHR2BLK;
+ mib[2] = sb.st_rdev;
+ size = sizeof(dev);
+ if (sysctl(mib, 3, &dev, &size, NULL, 0) >= 0) {
+ if (statbuf.st_dev / MAXPARTITIONS != dev / MAXPARTITIONS)
+ errx(1, "cross-device install");
+ }
+
+ pp = &dl->d_partitions[DISKPART(statbuf.st_dev)];
+ close(fd);
+
+ /* Read superblock. */
+ devread(devfd, sblock, DL_SECTOBLK(dl, pp->p_offset) + SBLOCK,
+ SBSIZE, "superblock");
+ fs = (struct fs *)sblock;
+
+ /* Sanity-check super-block. */
+ if (fs->fs_magic != FS_MAGIC)
+ errx(1, "Bad magic number in superblock");
+ if (fs->fs_inopb <= 0)
+ err(1, "Bad inopb=%d in superblock", fs->fs_inopb);
+
+ /* Read inode. */
+ if ((buf = malloc(fs->fs_bsize)) == NULL)
+ err(1, NULL);
+
+ blk = fsbtodb(fs, ino_to_fsba(fs, statbuf.st_ino));
+
+ devread(devfd, buf, DL_SECTOBLK(dl, pp->p_offset) + blk,
+ fs->fs_bsize, "inode");
+ ip = (struct ufs1_dinode *)(buf) + ino_to_fsbo(fs, statbuf.st_ino);
+
+ /*
+ * Have the inode. Figure out how many filesystem blocks (not disk
+ * sectors) there are for biosboot to load.
+ */
+ ndb = howmany(ip->di_size, fs->fs_bsize);
+ if (ndb <= 0)
+ errx(1, "No blocks to load");
+
+ /*
+ * Now set the values that will need to go into biosboot
+ * (the partition boot record, a.k.a. the PBR).
+ */
+ sym_set_value(pbr_symbols, "_fs_bsize_p", (fs->fs_bsize / 16));
+ sym_set_value(pbr_symbols, "_fs_bsize_s", (fs->fs_bsize /
+ dl->d_secsize));
+
+ /*
+ * fs_fsbtodb is the shift to convert fs_fsize to DEV_BSIZE. The
+ * ino_to_fsba() return value is the number of fs_fsize units.
+ * Calculate the shift to convert fs_fsize into physical sectors,
+ * which are added to p_offset to get the sector address BIOS
+ * will use.
+ *
+ * N.B.: ASSUMES fs_fsize is a power of 2 of d_secsize.
+ */
+ sym_set_value(pbr_symbols, "_fsbtodb",
+ ffs(fs->fs_fsize / dl->d_secsize) - 1);
+
+ sym_set_value(pbr_symbols, "_p_offset", pp->p_offset);
+ sym_set_value(pbr_symbols, "_inodeblk",
+ ino_to_fsba(fs, statbuf.st_ino));
+ ap = ip->di_db;
+ sym_set_value(pbr_symbols, "_inodedbl",
+ ((((char *)ap) - buf) + INODEOFF));
+ sym_set_value(pbr_symbols, "_nblocks", ndb);
+
+ if (verbose) {
+ fprintf(stderr, "%s is %d blocks x %d bytes\n",
+ boot, ndb, fs->fs_bsize);
+ fprintf(stderr, "fs block shift %u; part offset %u; "
+ "inode block %lld, offset %u\n",
+ ffs(fs->fs_fsize / dl->d_secsize) - 1,
+ pp->p_offset,
+ ino_to_fsba(fs, statbuf.st_ino),
+ (unsigned int)((((char *)ap) - buf) + INODEOFF));
+ }
+
+ return 0;
+}
+
+void
+sym_set_value(struct sym_data *sym_list, char *sym, u_int32_t value)
+{
+ struct sym_data *p;
+
+ for (p = sym_list; p->sym_name != NULL; p++) {
+ if (strcmp(p->sym_name, sym) == 0)
+ break;
+ }
+
+ if (p->sym_name == NULL)
+ errx(1, "%s: no such symbol", sym);
+
+ p->sym_value = value;
+ p->sym_set = 1;
+}
+
+/*
+ * Write the parameters stored in sym_list into the in-memory copy of
+ * the prototype biosboot (proto), ready for it to be written to disk.
+ */
+void
+pbr_set_symbols(char *fname, char *proto, struct sym_data *sym_list)
+{
+ struct sym_data *sym;
+ struct nlist *nl;
+ char *vp;
+ u_int32_t *lp;
+ u_int16_t *wp;
+ u_int8_t *bp;
+
+ for (sym = sym_list; sym->sym_name != NULL; sym++) {
+ if (!sym->sym_set)
+ errx(1, "%s not set", sym->sym_name);
+
+ /* Allocate space for 2; second is null-terminator for list. */
+ nl = calloc(2, sizeof(struct nlist));
+ if (nl == NULL)
+ err(1, NULL);
+
+ nl->n_un.n_name = sym->sym_name;
+
+ if (nlist(fname, nl) != 0)
+ errx(1, "%s: symbol %s not found",
+ fname, sym->sym_name);
+
+ if (nl->n_type != (N_TEXT))
+ errx(1, "%s: %s: wrong type (%x)",
+ fname, sym->sym_name, nl->n_type);
+
+ /* Get a pointer to where the symbol's value needs to go. */
+ vp = proto + nl->n_value;
+
+ switch (sym->sym_size) {
+ case 4: /* u_int32_t */
+ lp = (u_int32_t *) vp;
+ *lp = sym->sym_value;
+ break;
+ case 2: /* u_int16_t */
+ if (sym->sym_value >= 0x10000) /* out of range */
+ errx(1, "%s: symbol out of range (%u)",
+ sym->sym_name, sym->sym_value);
+ wp = (u_int16_t *) vp;
+ *wp = (u_int16_t) sym->sym_value;
+ break;
+ case 1: /* u_int16_t */
+ if (sym->sym_value >= 0x100) /* out of range */
+ errx(1, "%s: symbol out of range (%u)",
+ sym->sym_name, sym->sym_value);
+ bp = (u_int8_t *) vp;
+ *bp = (u_int8_t) sym->sym_value;
+ break;
+ default:
+ errx(1, "%s: bad symbol size %d",
+ sym->sym_name, sym->sym_size);
+ /* NOTREACHED */
+ }
+
+ free(nl);
+ }
+}
--- /dev/null
+/* $OpenBSD: i386_softraid.c,v 1.1 2013/12/27 13:52:40 jsing Exp $ */
+/*
+ * Copyright (c) 2012 Joel Sing <jsing@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/param.h>
+#include <sys/disklabel.h>
+#include <sys/dkio.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+
+#include <dev/biovar.h>
+#include <dev/softraidvar.h>
+#include <ufs/ufs/dinode.h>
+
+#include <err.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <util.h>
+
+#include "installboot.h"
+#include "i386_installboot.h"
+
+void sr_install_bootblk(int, int, int);
+void sr_install_bootldr(int, char *);
+
+void
+sr_install_bootblk(int devfd, int vol, int disk)
+{
+ struct bioc_disk bd;
+ struct disklabel dl;
+ struct partition *pp;
+ uint32_t poffset;
+ char *dev;
+ char part;
+ int diskfd;
+ int rv;
+
+ /* Get device name for this disk/chunk. */
+ memset(&bd, 0, sizeof(bd));
+ bd.bd_volid = vol;
+ bd.bd_diskid = disk;
+ rv = ioctl(devfd, BIOCDISK, &bd);
+ if (rv == -1)
+ err(1, "BIOCDISK");
+
+ /* Check disk status. */
+ if (bd.bd_status != BIOC_SDONLINE && bd.bd_status != BIOC_SDREBUILD) {
+ fprintf(stderr, "softraid chunk %u not online - skipping...\n",
+ disk);
+ return;
+ }
+
+ if (strlen(bd.bd_vendor) < 1)
+ errx(1, "invalid disk name");
+ part = bd.bd_vendor[strlen(bd.bd_vendor) - 1];
+ if (part < 'a' || part >= 'a' + MAXPARTITIONS)
+ errx(1, "invalid partition %c\n", part);
+ bd.bd_vendor[strlen(bd.bd_vendor) - 1] = '\0';
+
+ /* Open this device and check its disklabel. */
+ if ((diskfd = opendev(bd.bd_vendor, (nowrite? O_RDONLY:O_RDWR),
+ OPENDEV_PART, &dev)) < 0)
+ err(1, "open: %s", dev);
+
+ /* Get and check disklabel. */
+ if (ioctl(diskfd, DIOCGDINFO, &dl) != 0)
+ err(1, "disklabel: %s", dev);
+ if (dl.d_magic != DISKMAGIC)
+ err(1, "bad disklabel magic=0x%08x", dl.d_magic);
+
+ /* Warn on unknown disklabel types. */
+ if (dl.d_type == 0)
+ warnx("disklabel type unknown");
+
+ /* Determine poffset and set symbol value. */
+ pp = &dl.d_partitions[part - 'a'];
+ if (pp->p_offseth != 0)
+ errx(1, "partition offset too high");
+ poffset = pp->p_offset; /* Offset of RAID partition. */
+ poffset += SR_BOOT_LOADER_OFFSET; /* SR boot loader area. */
+ sym_set_value(pbr_symbols, "_p_offset", poffset);
+
+ if (verbose)
+ fprintf(stderr, "%s%c: installing boot blocks on %s, "
+ "part offset %u\n", bd.bd_vendor, part, dev, poffset);
+
+ /* Write boot blocks to device. */
+ write_bootblocks(diskfd, dev, &dl);
+
+ close(diskfd);
+}
+
+void
+sr_install_bootldr(int devfd, char *dev)
+{
+ struct bioc_installboot bb;
+ struct stat sb;
+ struct ufs1_dinode *ino_p;
+ uint32_t bootsize, inodeblk, inodedbl;
+ uint16_t bsize = SR_FS_BLOCKSIZE;
+ uint16_t nblocks;
+ uint8_t bshift = 5; /* fragsize == blocksize */
+ int fd, i, rv;
+ u_char *p;
+
+ /*
+ * Install boot loader into softraid boot loader storage area.
+ *
+ * In order to allow us to reuse the existing biosboot we construct
+ * a fake FFS filesystem with a single inode, which points to the
+ * boot loader.
+ */
+
+ nblocks = howmany(SR_BOOT_LOADER_SIZE, SR_FS_BLOCKSIZE / DEV_BSIZE);
+ inodeblk = nblocks - 1;
+ bootsize = nblocks * SR_FS_BLOCKSIZE;
+
+ p = malloc(bootsize);
+ if (p == NULL)
+ err(1, NULL);
+
+ memset(p, 0, bootsize);
+ fd = open(stage2, O_RDONLY, 0);
+ if (fd == -1)
+ err(1, NULL);
+
+ if (fstat(fd, &sb) == -1)
+ err(1, NULL);
+
+ nblocks = howmany(sb.st_blocks, SR_FS_BLOCKSIZE / DEV_BSIZE);
+ if (sb.st_blocks * S_BLKSIZE > bootsize -
+ (int)(sizeof(struct ufs1_dinode)))
+ errx(1, "boot code will not fit");
+
+ /* We only need to fill the direct block array. */
+ ino_p = (struct ufs1_dinode *)&p[bootsize - sizeof(struct ufs1_dinode)];
+
+ ino_p->di_mode = sb.st_mode;
+ ino_p->di_nlink = 1;
+ ino_p->di_inumber = 0xfeebfaab;
+ ino_p->di_size = read(fd, p, sb.st_blocks * S_BLKSIZE);
+ ino_p->di_blocks = nblocks;
+ for (i = 0; i < nblocks; i++)
+ ino_p->di_db[i] = i;
+
+ inodedbl = ((u_char*)&ino_p->di_db[0] -
+ &p[bootsize - SR_FS_BLOCKSIZE]) + INODEOFF;
+
+ bb.bb_bootldr = p;
+ bb.bb_bootldr_size = bootsize;
+ bb.bb_bootblk = "XXX";
+ bb.bb_bootblk_size = sizeof("XXX");
+ strncpy(bb.bb_dev, dev, sizeof(bb.bb_dev));
+ if (!nowrite) {
+ if (verbose)
+ fprintf(stderr, "%s: installing boot loader on "
+ "softraid volume\n", dev);
+ rv = ioctl(devfd, BIOCINSTALLBOOT, &bb);
+ if (rv != 0)
+ errx(1, "softraid installboot failed");
+ }
+
+ /*
+ * Set the values that will need to go into biosboot
+ * (the partition boot record, a.k.a. the PBR).
+ */
+ sym_set_value(pbr_symbols, "_fs_bsize_p", (bsize / 16));
+ sym_set_value(pbr_symbols, "_fs_bsize_s", (bsize / 512));
+ sym_set_value(pbr_symbols, "_fsbtodb", bshift);
+ sym_set_value(pbr_symbols, "_inodeblk", inodeblk);
+ sym_set_value(pbr_symbols, "_inodedbl", inodedbl);
+ sym_set_value(pbr_symbols, "_nblocks", nblocks);
+
+ if (verbose)
+ fprintf(stderr, "%s is %d blocks x %d bytes\n",
+ stage2, nblocks, bsize);
+
+ close(fd);
+}
projects / openbsd / commitdiff