/* grub-setup.c - make GRUB usable */ /* * GRUB -- GRand Unified Bootloader * Copyright (C) 1999,2000,2001,2002,2003,2004,2005,2006,2007,2008,2009,2010 Free Software Foundation, Inc. * * GRUB is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * GRUB is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with GRUB. If not, see . */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef GRUB_MACHINE_IEEE1275 #include #endif #include #include #include #include #include #include #include #include #include #include "progname.h" #include #include #define _GNU_SOURCE 1 #include /* On SPARC this program fills in various fields inside of the 'boot' and 'core' * image files. * * The 'boot' image needs to know the OBP path name of the root * device. It also needs to know the initial block number of * 'core' (which is 'diskboot' concatenated with 'kernel' and * all the modules, this is created by grub-mkimage). This resulting * 'boot' image is 512 bytes in size and is placed in the second block * of a partition. * * The initial 'diskboot' block acts as a loader for the actual GRUB * kernel. It contains the loading code and then a block list. * * The block list of 'core' starts at the end of the 'diskboot' image * and works it's way backwards towards the end of the code of 'diskboot'. * * We patch up the images with the necessary values and write out the * result. */ #define DEFAULT_BOOT_FILE "boot.img" #define DEFAULT_CORE_FILE "core.img" #ifdef GRUB_MACHINE_SPARC64 #define grub_target_to_host16(x) grub_be_to_cpu16(x) #define grub_target_to_host32(x) grub_be_to_cpu32(x) #define grub_target_to_host64(x) grub_be_to_cpu64(x) #define grub_host_to_target16(x) grub_cpu_to_be16(x) #define grub_host_to_target32(x) grub_cpu_to_be32(x) #define grub_host_to_target64(x) grub_cpu_to_be64(x) #elif defined (GRUB_MACHINE_PCBIOS) #define grub_target_to_host16(x) grub_le_to_cpu16(x) #define grub_target_to_host32(x) grub_le_to_cpu32(x) #define grub_target_to_host64(x) grub_le_to_cpu64(x) #define grub_host_to_target16(x) grub_cpu_to_le16(x) #define grub_host_to_target32(x) grub_cpu_to_le32(x) #define grub_host_to_target64(x) grub_cpu_to_le64(x) #else #error Complete this #endif static void write_rootdev (char *core_img, grub_device_t root_dev, char *boot_img, grub_uint64_t first_sector) { #ifdef GRUB_MACHINE_PCBIOS { grub_int32_t *install_dos_part, *install_bsd_part; grub_int32_t dos_part, bsd_part; grub_uint8_t *boot_drive; grub_disk_addr_t *kernel_sector; boot_drive = (grub_uint8_t *) (boot_img + GRUB_BOOT_MACHINE_BOOT_DRIVE); kernel_sector = (grub_disk_addr_t *) (boot_img + GRUB_BOOT_MACHINE_KERNEL_SECTOR); install_dos_part = (grub_int32_t *) (core_img + GRUB_DISK_SECTOR_SIZE + GRUB_KERNEL_MACHINE_INSTALL_DOS_PART); install_bsd_part = (grub_int32_t *) (core_img + GRUB_DISK_SECTOR_SIZE + GRUB_KERNEL_MACHINE_INSTALL_BSD_PART); /* If we hardcoded drive as part of prefix, we don't want to override the current setting. */ if (*install_dos_part != -2) { /* Embed information about the installed location. */ if (root_dev->disk->partition) { if (root_dev->disk->partition->parent) { if (root_dev->disk->partition->parent->parent) grub_util_error ("Installing on doubly nested partitions is " "not supported"); dos_part = root_dev->disk->partition->parent->number; bsd_part = root_dev->disk->partition->number; } else { dos_part = root_dev->disk->partition->number; bsd_part = -1; } } else dos_part = bsd_part = -1; } else { dos_part = grub_le_to_cpu32 (*install_dos_part); bsd_part = grub_le_to_cpu32 (*install_bsd_part); } grub_util_info ("dos partition is %d, bsd partition is %d", dos_part, bsd_part); *install_dos_part = grub_cpu_to_le32 (dos_part); *install_bsd_part = grub_cpu_to_le32 (bsd_part); /* FIXME: can this be skipped? */ *boot_drive = 0xFF; *kernel_sector = grub_cpu_to_le64 (first_sector); } #endif #ifdef GRUB_MACHINE_IEEE1275 { grub_disk_addr_t *kernel_byte; kernel_byte = (grub_disk_addr_t *) (boot_img + GRUB_BOOT_AOUT_HEADER_SIZE + GRUB_BOOT_MACHINE_KERNEL_BYTE); *kernel_byte = grub_cpu_to_be64 (first_sector << GRUB_DISK_SECTOR_BITS); } #endif } #ifdef GRUB_MACHINE_IEEE1275 #define BOOT_SECTOR 1 #else #define BOOT_SECTOR 0 #endif static void setup (const char *dir, const char *boot_file, const char *core_file, const char *root, const char *dest, int must_embed, int force, int fs_probe, int allow_floppy) { char *boot_path, *core_path, *core_path_dev, *core_path_dev_full; char *boot_img, *core_img; size_t boot_size, core_size; grub_uint16_t core_sectors; grub_device_t root_dev, dest_dev; struct grub_boot_blocklist *first_block, *block; char *tmp_img; int i; grub_disk_addr_t first_sector; #ifdef GRUB_MACHINE_PCBIOS grub_uint16_t current_segment = GRUB_BOOT_MACHINE_KERNEL_SEG + (GRUB_DISK_SECTOR_SIZE >> 4); #endif grub_uint16_t last_length = GRUB_DISK_SECTOR_SIZE; grub_file_t file; FILE *fp; auto void NESTED_FUNC_ATTR save_first_sector (grub_disk_addr_t sector, unsigned offset, unsigned length); auto void NESTED_FUNC_ATTR save_blocklists (grub_disk_addr_t sector, unsigned offset, unsigned length); void NESTED_FUNC_ATTR save_first_sector (grub_disk_addr_t sector, unsigned offset, unsigned length) { grub_util_info ("the first sector is <%llu,%u,%u>", sector, offset, length); if (offset != 0 || length != GRUB_DISK_SECTOR_SIZE) grub_util_error (_("the first sector of the core file is not sector-aligned")); first_sector = sector; } void NESTED_FUNC_ATTR save_blocklists (grub_disk_addr_t sector, unsigned offset, unsigned length) { struct grub_boot_blocklist *prev = block + 1; grub_util_info ("saving <%llu,%u,%u>", sector, offset, length); if (offset != 0 || last_length != GRUB_DISK_SECTOR_SIZE) grub_util_error (_("non-sector-aligned data is found in the core file")); if (block != first_block && (grub_target_to_host64 (prev->start) + grub_target_to_host16 (prev->len)) == sector) prev->len = grub_host_to_target16 (grub_target_to_host16 (prev->len) + 1); else { block->start = grub_host_to_target64 (sector); block->len = grub_host_to_target16 (1); #ifdef GRUB_MACHINE_PCBIOS block->segment = grub_host_to_target16 (current_segment); #endif block--; if (block->len) grub_util_error (_("the sectors of the core file are too fragmented")); } last_length = length; #ifdef GRUB_MACHINE_PCBIOS current_segment += GRUB_DISK_SECTOR_SIZE >> 4; #endif } /* Read the boot image by the OS service. */ boot_path = grub_util_get_path (dir, boot_file); boot_size = grub_util_get_image_size (boot_path); if (boot_size != GRUB_DISK_SECTOR_SIZE) grub_util_error (_("the size of `%s' is not %u"), boot_path, GRUB_DISK_SECTOR_SIZE); boot_img = grub_util_read_image (boot_path); free (boot_path); core_path = grub_util_get_path (dir, core_file); core_size = grub_util_get_image_size (core_path); core_sectors = ((core_size + GRUB_DISK_SECTOR_SIZE - 1) >> GRUB_DISK_SECTOR_BITS); if (core_size < GRUB_DISK_SECTOR_SIZE) grub_util_error (_("the size of `%s' is too small"), core_path); #ifdef GRUB_MACHINE_PCBIOS if (core_size > 0xFFFF * GRUB_DISK_SECTOR_SIZE) grub_util_error (_("the size of `%s' is too large"), core_path); #endif core_img = grub_util_read_image (core_path); /* Have FIRST_BLOCK to point to the first blocklist. */ first_block = (struct grub_boot_blocklist *) (core_img + GRUB_DISK_SECTOR_SIZE - sizeof (*block)); grub_util_info ("root is `%s', dest is `%s'", root, dest); /* Open the root device and the destination device. */ grub_util_info ("Opening root"); root_dev = grub_device_open (root); if (! root_dev) grub_util_error ("%s", grub_errmsg); grub_util_info ("Opening dest"); dest_dev = grub_device_open (dest); if (! dest_dev) grub_util_error ("%s", grub_errmsg); grub_util_info ("setting the root device to `%s'", root); if (grub_env_set ("root", root) != GRUB_ERR_NONE) grub_util_error ("%s", grub_errmsg); #ifdef GRUB_MACHINE_PCBIOS /* Read the original sector from the disk. */ tmp_img = xmalloc (GRUB_DISK_SECTOR_SIZE); if (grub_disk_read (dest_dev->disk, 0, 0, GRUB_DISK_SECTOR_SIZE, tmp_img)) grub_util_error ("%s", grub_errmsg); #endif #ifdef GRUB_MACHINE_PCBIOS { grub_uint16_t *boot_drive_check; boot_drive_check = (grub_uint16_t *) (boot_img + GRUB_BOOT_MACHINE_DRIVE_CHECK); /* Copy the possible DOS BPB. */ memcpy (boot_img + GRUB_BOOT_MACHINE_BPB_START, tmp_img + GRUB_BOOT_MACHINE_BPB_START, GRUB_BOOT_MACHINE_BPB_END - GRUB_BOOT_MACHINE_BPB_START); /* If DEST_DRIVE is a hard disk, enable the workaround, which is for buggy BIOSes which don't pass boot drive correctly. Instead, they pass 0x00 or 0x01 even when booted from 0x80. */ if (!allow_floppy && !grub_util_biosdisk_is_floppy (dest_dev->disk)) /* Replace the jmp (2 bytes) with double nop's. */ *boot_drive_check = 0x9090; } #endif #ifdef GRUB_MACHINE_PCBIOS { grub_partition_map_t dest_partmap = NULL; grub_partition_t container = dest_dev->disk->partition; int multiple_partmaps = 0; grub_err_t err; grub_disk_addr_t *sectors; int i; grub_fs_t fs; unsigned int nsec; /* Unlike root_dev, with dest_dev we're interested in the partition map even if dest_dev itself is a whole disk. */ auto int NESTED_FUNC_ATTR identify_partmap (grub_disk_t disk, const grub_partition_t p); int NESTED_FUNC_ATTR identify_partmap (grub_disk_t disk __attribute__ ((unused)), const grub_partition_t p) { if (p->parent != container) return 0; /* NetBSD and OpenBSD subpartitions have metadata inside a partition, so they are safe to ignore. */ if (grub_strcmp (p->partmap->name, "netbsd") == 0 || grub_strcmp (p->partmap->name, "openbsd") == 0) return 0; if (dest_partmap == NULL) { dest_partmap = p->partmap; return 0; } if (dest_partmap == p->partmap) return 0; multiple_partmaps = 1; return 1; } grub_partition_iterate (dest_dev->disk, identify_partmap); if (container && grub_strcmp (container->partmap->name, "msdos") == 0 && dest_partmap && (container->msdostype == GRUB_PC_PARTITION_TYPE_NETBSD || container->msdostype == GRUB_PC_PARTITION_TYPE_OPENBSD)) { grub_util_warn (_("Attempting to install GRUB to a disk with multiple partition labels or both partition label and filesystem. This is not supported yet.")); goto unable_to_embed; } fs = grub_fs_probe (dest_dev); if (!fs) grub_errno = GRUB_ERR_NONE; #ifdef GRUB_MACHINE_PCBIOS if (fs_probe) { if (!fs && !dest_partmap) grub_util_error (_("unable to identify a filesystem in %s; safety check can't be performed"), dest_dev->disk->name); if (fs && !fs->reserved_first_sector) grub_util_error (_("%s appears to contain a %s filesystem which isn't known to " "reserve space for DOS-style boot. Installing GRUB there could " "result in FILESYSTEM DESTRUCTION if valuable data is overwritten " "by grub-setup (--skip-fs-probe disables this " "check, use at your own risk)"), dest_dev->disk->name, fs->name); if (dest_partmap && strcmp (dest_partmap->name, "msdos") != 0 && strcmp (dest_partmap->name, "gpt") != 0 && strcmp (dest_partmap->name, "bsd") != 0 && strcmp (dest_partmap->name, "netbsd") != 0 && strcmp (dest_partmap->name, "openbsd") != 0 && strcmp (dest_partmap->name, "sunpc") != 0) grub_util_error (_("%s appears to contain a %s partition map which isn't known to " "reserve space for DOS-style boot. Installing GRUB there could " "result in FILESYSTEM DESTRUCTION if valuable data is overwritten " "by grub-setup (--skip-fs-probe disables this " "check, use at your own risk)"), dest_dev->disk->name, dest_partmap->name); } #endif /* Copy the partition table. */ if (dest_partmap || (!allow_floppy && !grub_util_biosdisk_is_floppy (dest_dev->disk))) memcpy (boot_img + GRUB_BOOT_MACHINE_WINDOWS_NT_MAGIC, tmp_img + GRUB_BOOT_MACHINE_WINDOWS_NT_MAGIC, GRUB_BOOT_MACHINE_PART_END - GRUB_BOOT_MACHINE_WINDOWS_NT_MAGIC); free (tmp_img); if (! dest_partmap) { grub_util_warn (_("Attempting to install GRUB to a partitionless disk or to a partition. This is a BAD idea.")); goto unable_to_embed; } if (multiple_partmaps || fs) { grub_util_warn (_("Attempting to install GRUB to a disk with multiple partition labels or both partition label and filesystem. This is not supported yet.")); goto unable_to_embed; } if (!dest_partmap->embed) { grub_util_warn ("Partition style '%s' doesn't support embeding", dest_partmap->name); goto unable_to_embed; } nsec = core_sectors; err = dest_partmap->embed (dest_dev->disk, &nsec, GRUB_EMBED_PCBIOS, §ors); if (nsec > 2 * core_sectors) nsec = 2 * core_sectors; if (err) { grub_util_warn ("%s", grub_errmsg); grub_errno = GRUB_ERR_NONE; goto unable_to_embed; } /* Clean out the blocklists. */ block = first_block; while (block->len) { grub_memset (block, 0, sizeof (block)); block--; if ((char *) block <= core_img) grub_util_error ("No terminator in the core image"); } save_first_sector (sectors[0] + grub_partition_get_start (container), 0, GRUB_DISK_SECTOR_SIZE); block = first_block; for (i = 1; i < nsec; i++) save_blocklists (sectors[i] + grub_partition_get_start (container), 0, GRUB_DISK_SECTOR_SIZE); write_rootdev (core_img, root_dev, boot_img, first_sector); core_img = realloc (core_img, nsec * GRUB_DISK_SECTOR_SIZE); first_block = (struct grub_boot_blocklist *) (core_img + GRUB_DISK_SECTOR_SIZE - sizeof (*block)); *(grub_uint32_t *) (core_img + GRUB_DISK_SECTOR_SIZE + GRUB_KERNEL_I386_PC_REED_SOLOMON_REDUNDANCY) = grub_host_to_target32 (nsec * GRUB_DISK_SECTOR_SIZE - core_size); grub_reed_solomon_add_redundancy (core_img + GRUB_KERNEL_I386_PC_NO_REED_SOLOMON_PART + GRUB_DISK_SECTOR_SIZE, core_size - GRUB_KERNEL_I386_PC_NO_REED_SOLOMON_PART - GRUB_DISK_SECTOR_SIZE, nsec * GRUB_DISK_SECTOR_SIZE - core_size); /* Make sure that the second blocklist is a terminator. */ block = first_block - 1; block->start = 0; block->len = 0; block->segment = 0; /* Write the core image onto the disk. */ for (i = 0; i < nsec; i++) grub_disk_write (dest_dev->disk, sectors[i], 0, GRUB_DISK_SECTOR_SIZE, core_img + i * GRUB_DISK_SECTOR_SIZE); grub_free (sectors); goto finish; } #endif unable_to_embed: if (must_embed) grub_util_error (_("embedding is not possible, but this is required when " "the root device is on a RAID array or LVM volume")); #ifdef GRUB_MACHINE_PCBIOS if (dest_dev->disk->id != root_dev->disk->id) grub_util_error (_("embedding is not possible, but this is required for " "cross-disk install")); #endif grub_util_warn (_("Embedding is not possible. GRUB can only be installed in this " "setup by using blocklists. However, blocklists are UNRELIABLE and " "their use is discouraged.")); if (! force) grub_util_error (_("will not proceed with blocklists")); /* The core image must be put on a filesystem unfortunately. */ grub_util_info ("will leave the core image on the filesystem"); /* Make sure that GRUB reads the identical image as the OS. */ tmp_img = xmalloc (core_size); core_path_dev_full = grub_util_get_path (dir, core_file); core_path_dev = grub_make_system_path_relative_to_its_root (core_path_dev_full); free (core_path_dev_full); grub_util_biosdisk_flush (root_dev->disk); #define MAX_TRIES 5 for (i = 0; i < MAX_TRIES; i++) { grub_util_info ((i == 0) ? _("attempting to read the core image `%s' from GRUB") : _("attempting to read the core image `%s' from GRUB again"), core_path_dev); grub_disk_cache_invalidate_all (); grub_file_filter_disable_compression (); file = grub_file_open (core_path_dev); if (file) { if (grub_file_size (file) != core_size) grub_util_info ("succeeded in opening the core image but the size is different (%d != %d)", (int) grub_file_size (file), (int) core_size); else if (grub_file_read (file, tmp_img, core_size) != (grub_ssize_t) core_size) grub_util_info ("succeeded in opening the core image but cannot read %d bytes", (int) core_size); else if (memcmp (core_img, tmp_img, core_size) != 0) { #if 0 FILE *dump; FILE *dump2; dump = fopen ("dump.img", "wb"); if (dump) { fwrite (tmp_img, 1, core_size, dump); fclose (dump); } dump2 = fopen ("dump2.img", "wb"); if (dump2) { fwrite (core_img, 1, core_size, dump2); fclose (dump2); } #endif grub_util_info ("succeeded in opening the core image but the data is different"); } else { grub_file_close (file); break; } grub_file_close (file); } else grub_util_info ("couldn't open the core image"); if (grub_errno) grub_util_info ("error message = %s", grub_errmsg); grub_errno = GRUB_ERR_NONE; grub_util_biosdisk_flush (root_dev->disk); sleep (1); } if (i == MAX_TRIES) grub_util_error (_("cannot read `%s' correctly"), core_path_dev); /* Clean out the blocklists. */ block = first_block; while (block->len) { block->start = 0; block->len = 0; #ifdef GRUB_MACHINE_PCBIOS block->segment = 0; #endif block--; if ((char *) block <= core_img) grub_util_error (_("no terminator in the core image")); } /* Now read the core image to determine where the sectors are. */ grub_file_filter_disable_compression (); file = grub_file_open (core_path_dev); if (! file) grub_util_error ("%s", grub_errmsg); file->read_hook = save_first_sector; if (grub_file_read (file, tmp_img, GRUB_DISK_SECTOR_SIZE) != GRUB_DISK_SECTOR_SIZE) grub_util_error (_("failed to read the first sector of the core image")); block = first_block; file->read_hook = save_blocklists; if (grub_file_read (file, tmp_img, core_size - GRUB_DISK_SECTOR_SIZE) != (grub_ssize_t) core_size - GRUB_DISK_SECTOR_SIZE) grub_util_error (_("failed to read the rest sectors of the core image")); #ifdef GRUB_MACHINE_IEEE1275 { char *boot_devpath; boot_devpath = (char *) (boot_img + GRUB_BOOT_AOUT_HEADER_SIZE + GRUB_BOOT_MACHINE_BOOT_DEVPATH); if (file->device->disk->id != dest_dev->disk->id) { const char *dest_ofpath; dest_ofpath = grub_util_devname_to_ofpath (grub_util_biosdisk_get_osdev (file->device->disk)); grub_util_info ("dest_ofpath is `%s'", dest_ofpath); strncpy (boot_devpath, dest_ofpath, GRUB_BOOT_MACHINE_BOOT_DEVPATH_END - GRUB_BOOT_MACHINE_BOOT_DEVPATH - 1); boot_devpath[GRUB_BOOT_MACHINE_BOOT_DEVPATH_END - GRUB_BOOT_MACHINE_BOOT_DEVPATH - 1] = 0; } else { grub_util_info ("non cross-disk install"); memset (boot_devpath, 0, GRUB_BOOT_MACHINE_BOOT_DEVPATH_END - GRUB_BOOT_MACHINE_BOOT_DEVPATH); } grub_util_info ("boot device path %s", boot_devpath); } #endif grub_file_close (file); free (core_path_dev); free (tmp_img); write_rootdev (core_img, root_dev, boot_img, first_sector); /* Write the first two sectors of the core image onto the disk. */ grub_util_info ("opening the core image `%s'", core_path); fp = fopen (core_path, "r+b"); if (! fp) grub_util_error (_("cannot open `%s'"), core_path); grub_util_write_image (core_img, GRUB_DISK_SECTOR_SIZE * 2, fp); fclose (fp); finish: /* Write the boot image onto the disk. */ if (grub_disk_write (dest_dev->disk, BOOT_SECTOR, 0, GRUB_DISK_SECTOR_SIZE, boot_img)) grub_util_error ("%s", grub_errmsg); grub_util_biosdisk_flush (root_dev->disk); grub_util_biosdisk_flush (dest_dev->disk); free (core_path); free (core_img); free (boot_img); grub_device_close (dest_dev); grub_device_close (root_dev); } static struct argp_option options[] = { {"boot-image", 'b', N_("FILE"), 0, N_("Use FILE as the boot image [default=%s]"), 0}, {"core-image", 'c', N_("FILE"), 0, N_("Use FILE as the core image [default=%s]"), 0}, {"directory", 'd', N_("DIR"), 0, N_("Use GRUB files in the directory DIR [default=%s]"), 0}, {"device-map", 'm', N_("FILE"), 0, N_("Use FILE as the device map [default=%s]"), 0}, {"root-device", 'r', N_("DEV"), 0, N_("Use DEV as the root device [default=guessed]"), 0}, {"force", 'f', 0, 0, N_("Install even if problems are detected"), 0}, {"skip-fs-probe",'s',0, 0, N_("Do not probe for filesystems in DEVICE"), 0}, {"verbose", 'v', 0, 0, N_("Print verbose messages."), 0}, {"allow-floppy", 'a', 0, 0, N_("Make the drive also bootable as floppy (default for fdX devices). May break on some BIOSes."), 0}, { 0, 0, 0, 0, 0, 0 } }; static char * help_filter (int key, const char *text, void *input __attribute__ ((unused))) { switch (key) { case 'b': return xasprintf (text, DEFAULT_BOOT_FILE); case 'c': return xasprintf (text, DEFAULT_CORE_FILE); case 'd': return xasprintf (text, DEFAULT_DIRECTORY); case 'm': return xasprintf (text, DEFAULT_DEVICE_MAP); default: return (char *) text; } } struct arguments { char *boot_file; char *core_file; char *dir; char *dev_map; char *root_dev; int force; int fs_probe; int allow_floppy; char *device; }; /* Print the version information. */ static void print_version (FILE *stream, struct argp_state *state) { fprintf (stream, "%s (%s) %s\n", program_name, PACKAGE_NAME, PACKAGE_VERSION); } void (*argp_program_version_hook) (FILE *, struct argp_state *) = print_version; /* Set the bug report address */ const char *argp_program_bug_address = "<"PACKAGE_BUGREPORT">"; static error_t argp_parser (int key, char *arg, struct argp_state *state) { /* Get the input argument from argp_parse, which we know is a pointer to our arguments structure. */ struct arguments *arguments = state->input; char *p; switch (key) { case 'a': arguments->allow_floppy = 1; break; case 'b': if (arguments->boot_file) free (arguments->boot_file); arguments->boot_file = xstrdup (arg); break; case 'c': if (arguments->core_file) free (arguments->core_file); arguments->core_file = xstrdup (arg); break; case 'd': if (arguments->dir) free (arguments->dir); arguments->dir = xstrdup (arg); break; case 'm': if (arguments->dev_map) free (arguments->dev_map); arguments->dev_map = xstrdup (arg); break; case 'r': if (arguments->root_dev) free (arguments->root_dev); arguments->root_dev = xstrdup (arg); break; case 'f': arguments->force = 1; break; case 's': arguments->fs_probe = 0; break; case 'v': verbosity++; break; case ARGP_KEY_ARG: if (state->arg_num == 0) arguments->device = xstrdup(arg); else { /* Too many arguments. */ fprintf (stderr, _("Unknown extra argument `%s'.\n"), arg); argp_usage (state); } break; case ARGP_KEY_NO_ARGS: fprintf (stderr, "%s", _("No device is specified.\n")); argp_usage (state); break; default: return ARGP_ERR_UNKNOWN; } return 0; } static struct argp argp = { options, argp_parser, N_("DEVICE"), "\n"N_("\ Set up images to boot from DEVICE.\n\ \n\ You should not normally run this program directly. Use grub-install instead.") "\v"N_("\ DEVICE must be an OS device (e.g. /dev/sda)."), NULL, help_filter, NULL }; static char * get_device_name (char *dev) { size_t len = strlen (dev); if (dev[0] != '(' || dev[len - 1] != ')') return 0; dev[len - 1] = '\0'; return dev + 1; } int main (int argc, char *argv[]) { char *root_dev = NULL; char *dest_dev = NULL; int must_embed = 0; struct arguments arguments; set_program_name (argv[0]); grub_util_init_nls (); /* Default option values. */ memset (&arguments, 0, sizeof (struct arguments)); arguments.fs_probe = 1; /* Parse our arguments */ if (argp_parse (&argp, argc, argv, 0, 0, &arguments) != 0) { fprintf (stderr, "%s", _("Error in parsing command line arguments\n")); exit(1); } #ifdef GRUB_MACHINE_IEEE1275 arguments.force = 1; #endif if (verbosity > 1) grub_env_set ("debug", "all"); /* Initialize the emulated biosdisk driver. */ grub_util_biosdisk_init (arguments.dev_map ? : DEFAULT_DEVICE_MAP); /* Initialize all modules. */ grub_init_all (); grub_lvm_fini (); grub_mdraid09_fini (); grub_mdraid1x_fini (); grub_raid_fini (); grub_raid_init (); grub_mdraid09_init (); grub_mdraid1x_init (); grub_lvm_init (); dest_dev = get_device_name (arguments.device); if (! dest_dev) { /* Possibly, the user specified an OS device file. */ dest_dev = grub_util_get_grub_dev (arguments.device); if (! dest_dev) { char *program = xstrdup(program_name); fprintf (stderr, _("Invalid device `%s'.\n"), arguments.device); argp_help (&argp, stderr, ARGP_HELP_STD_USAGE, program); free(program); exit(1); } grub_util_info ("transformed OS device `%s' into GRUB device `%s'", arguments.device, dest_dev); } else { /* For simplicity. */ dest_dev = xstrdup (dest_dev); grub_util_info ("Using `%s' as GRUB device", dest_dev); } if (arguments.root_dev) { root_dev = get_device_name (arguments.root_dev); if (! root_dev) grub_util_error (_("invalid root device `%s'"), arguments.root_dev); root_dev = xstrdup (root_dev); } else { char *root_device = grub_guess_root_device (arguments.dir ? : DEFAULT_DIRECTORY); root_dev = grub_util_get_grub_dev (root_device); if (! root_dev) { grub_util_info ("guessing the root device failed, because of `%s'", grub_errmsg); grub_util_error (_("cannot guess the root device. Specify the option " "`--root-device'")); } grub_util_info ("guessed root device `%s' and root_dev `%s' from " "dir `%s'", root_device, root_dev, arguments.dir ? : DEFAULT_DIRECTORY); } #ifdef __linux__ if (grub_util_lvm_isvolume (root_dev)) must_embed = 1; if (root_dev[0] == 'm' && root_dev[1] == 'd' && ((root_dev[2] >= '0' && root_dev[2] <= '9') || root_dev[2] == '/')) { /* FIXME: we can avoid this on RAID1. */ must_embed = 1; } if (dest_dev[0] == 'm' && dest_dev[1] == 'd' && ((dest_dev[2] >= '0' && dest_dev[2] <= '9') || dest_dev[2] == '/')) { char **devicelist; int i; if (arguments.device[0] == '/') devicelist = grub_util_raid_getmembers (arguments.device, 1); else { char *devname; devname = xasprintf ("/dev/%s", dest_dev); devicelist = grub_util_raid_getmembers (dest_dev, 1); free (devname); } for (i = 0; devicelist[i]; i++) { setup (arguments.dir ? : DEFAULT_DIRECTORY, arguments.boot_file ? : DEFAULT_BOOT_FILE, arguments.core_file ? : DEFAULT_CORE_FILE, root_dev, grub_util_get_grub_dev (devicelist[i]), 1, arguments.force, arguments.fs_probe, arguments.allow_floppy); } } else #endif /* Do the real work. */ setup (arguments.dir ? : DEFAULT_DIRECTORY, arguments.boot_file ? : DEFAULT_BOOT_FILE, arguments.core_file ? : DEFAULT_CORE_FILE, root_dev, dest_dev, must_embed, arguments.force, arguments.fs_probe, arguments.allow_floppy); /* Free resources. */ grub_fini_all (); grub_util_biosdisk_fini (); free (arguments.boot_file); free (arguments.core_file); free (arguments.dir); free (arguments.root_dev); free (arguments.dev_map); free (arguments.device); free (root_dev); free (dest_dev); return 0; }