/* $OpenBSD: loongson_installboot.c,v 1.4 2021/07/20 14:51:56 kettenis Exp $ */ /* $NetBSD: installboot.c,v 1.5 1995/11/17 23:23:50 gwr Exp $ */ /* * Copyright (c) 2011 Joel Sing * Copyright (c) 2010 Otto Moerbeek * Copyright (c) 2003 Tom Cosgrove * 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 /* DEV_BSIZE */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include "installboot.h" static void write_filesystem(struct disklabel *, char); static int findmbrfat(int, struct disklabel *); void md_init(void) { } void md_loadboot(void) { } void md_prepareboot(int devfd, char *dev) { } void md_installboot(int devfd, char *dev) { struct disklabel dl; int part; /* Get and check disklabel. */ if (ioctl(devfd, DIOCGDINFO, &dl) == -1) 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"); part = findmbrfat(devfd, &dl); if (part != -1) { write_filesystem(&dl, (char)part); return; } } static void write_filesystem(struct disklabel *dl, char part) { static char *fsckfmt = "/sbin/fsck_ext2fs %s >/dev/null"; static char *newfsfmt ="/sbin/newfs_ext2fs %s >/dev/null"; struct ufs_args args; char cmd[60]; char dst[PATH_MAX]; char *src; size_t mntlen, pathlen, srclen; int rslt; src = NULL; /* Create directory for temporary mount point. */ strlcpy(dst, "/tmp/installboot.XXXXXXXXXX", sizeof(dst)); if (mkdtemp(dst) == NULL) err(1, "mkdtemp('%s') failed", dst); mntlen = strlen(dst); /* Mount . as ext2fs filesystem. */ memset(&args, 0, sizeof(args)); rslt = asprintf(&args.fspec, "%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx.%c", dl->d_uid[0], dl->d_uid[1], dl->d_uid[2], dl->d_uid[3], dl->d_uid[4], dl->d_uid[5], dl->d_uid[6], dl->d_uid[7], part); if (rslt == -1) { warn("bad special device"); goto rmdir; } args.export_info.ex_root = -2; args.export_info.ex_flags = 0; if (mount(MOUNT_EXT2FS, dst, 0, &args) == -1) { /* Try fsck'ing it. */ rslt = snprintf(cmd, sizeof(cmd), fsckfmt, args.fspec); if (rslt >= sizeof(cmd)) { warnx("can't build fsck command"); rslt = -1; goto rmdir; } rslt = system(cmd); if (rslt == -1) { warn("system('%s') failed", cmd); goto rmdir; } if (mount(MOUNT_EXT2FS, dst, 0, &args) == -1) { /* Try newfs'ing it. */ rslt = snprintf(cmd, sizeof(cmd), newfsfmt, args.fspec); if (rslt >= sizeof(cmd)) { warnx("can't build newfs command"); rslt = -1; goto rmdir; } rslt = system(cmd); if (rslt == -1) { warn("system('%s') failed", cmd); goto rmdir; } rslt = mount(MOUNT_EXT2FS, dst, 0, &args); if (rslt == -1) { warn("unable to mount ext2fs partition"); goto rmdir; } } } /* Create "/boot" directory in .. */ if (strlcat(dst, "/boot", sizeof(dst)) >= sizeof(dst)) { rslt = -1; warn("unable to build /boot directory"); goto umount; } rslt = mkdir(dst, 0755); if (rslt == -1 && errno != EEXIST) { warn("mkdir('%s') failed", dst); goto umount; } /* * Copy /usr/mdec/boot to /boot/boot. */ pathlen = strlen(dst); if (strlcat(dst, "/boot", sizeof(dst)) >= sizeof(dst)) { rslt = -1; warn("unable to build /boot path"); goto umount; } src = fileprefix(root, "/usr/mdec/boot"); if (src == NULL) { rslt = -1; goto umount; } srclen = strlen(src); if (verbose) fprintf(stderr, "%s %s to %s\n", (nowrite ? "would copy" : "copying"), src, dst); if (!nowrite) { rslt = filecopy(src, dst); if (rslt == -1) goto umount; } rslt = 0; umount: dst[mntlen] = '\0'; if (unmount(dst, MNT_FORCE) == -1) err(1, "unmount('%s') failed", dst); rmdir: free(args.fspec); dst[mntlen] = '\0'; if (rmdir(dst) == -1) err(1, "rmdir('%s') failed", dst); free(src); if (rslt == -1) exit(1); } int findmbrfat(int devfd, struct disklabel *dl) { struct dos_partition dp[NDOSPART]; ssize_t len; u_int64_t start = 0; int i; u_int8_t *secbuf; if ((secbuf = malloc(dl->d_secsize)) == NULL) err(1, NULL); /* Read MBR. */ len = pread(devfd, secbuf, dl->d_secsize, 0); if (len != dl->d_secsize) err(4, "can't read mbr"); memcpy(dp, &secbuf[DOSPARTOFF], sizeof(dp)); for (i = 0; i < NDOSPART; i++) { if (dp[i].dp_typ == DOSPTYP_UNUSED) continue; if (dp[i].dp_typ == DOSPTYP_LINUX) start = dp[i].dp_start; } free(secbuf); if (start) { for (i = 0; i < MAXPARTITIONS; i++) { if (DL_GETPSIZE(&dl->d_partitions[i]) > 0 && DL_GETPOFFSET(&dl->d_partitions[i]) == start) return ('a' + i); } } return (-1); }