diff --git a/ChangeLog b/ChangeLog index 5ffeccf8d..8fd3eb176 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,16 @@ +2010-03-26 Vladimir Serbinenko + + Sunpc partitions support. + + * conf/common.rmk (grub_probe_SOURCES): Add partmap/sunpc.c. + (grub_fstest_SOURCES): Likewise. + (pkglib_MODULES): Add part_sunpc.mod. + (part_sunpc_mod_SOURCES): New variable. + (part_sunpc_mod_CFLAGS): Likewise. + (part_sunpc_mod_LDFLAGS): Likewise. + * conf/i386-pc.rmk (grub_setup_SOURCES): Add partmap/sunpc.c. + * partmap/sunpc.c: New file. + 2010-03-26 BVK Chaitanya For loop support to GRUB script. diff --git a/conf/common.rmk b/conf/common.rmk index 0b7ed470b..f55bbfe0c 100644 --- a/conf/common.rmk +++ b/conf/common.rmk @@ -36,7 +36,7 @@ grub_probe_SOURCES = gnulib/progname.c util/grub-probe.c \ fs/befs.c fs/befs_be.c fs/tar.c \ \ partmap/msdos.c partmap/bsdlabel.c partmap/apple.c \ - partmap/sun.c partmap/gpt.c\ + partmap/sun.c partmap/sunpc.c partmap/gpt.c \ kern/fs.c kern/env.c fs/fshelp.c \ disk/raid.c disk/mdraid_linux.c disk/lvm.c grub_probe_init.c @@ -73,8 +73,8 @@ grub_fstest_SOURCES = gnulib/progname.c util/grub-fstest.c util/hostfs.c \ fs/ufs.c fs/ufs2.c fs/xfs.c fs/afs.c fs/afs_be.c fs/befs.c \ fs/befs_be.c fs/tar.c \ \ - kern/partition.c partmap/msdos.c partmap/bsdlabel.c \ - partmap/apple.c partmap/sun.c partmap/gpt.c \ + kern/partition.c partmap/msdos.c partmap/bsdlabel.c \ + partmap/apple.c partmap/sun.c partmap/sunpc.c partmap/gpt.c \ kern/fs.c kern/env.c fs/fshelp.c disk/raid.c \ disk/raid5_recover.c disk/raid6_recover.c \ disk/mdraid_linux.c disk/dmraid_nvidia.c disk/lvm.c \ @@ -409,6 +409,11 @@ part_bsd_mod_SOURCES = partmap/bsdlabel.c part_bsd_mod_CFLAGS = $(COMMON_CFLAGS) part_bsd_mod_LDFLAGS = $(COMMON_LDFLAGS) +pkglib_MODULES += part_sunpc.mod +part_sunpc_mod_SOURCES = partmap/sunpc.c +part_sunpc_mod_CFLAGS = $(COMMON_CFLAGS) +part_sunpc_mod_LDFLAGS = $(COMMON_LDFLAGS) + # Special disk structures and generic drivers pkglib_MODULES += raid.mod raid5rec.mod raid6rec.mod mdraid.mod dm_nv.mod \ diff --git a/conf/i386-pc.rmk b/conf/i386-pc.rmk index 024db4822..ece88446b 100644 --- a/conf/i386-pc.rmk +++ b/conf/i386-pc.rmk @@ -86,7 +86,8 @@ grub_setup_SOURCES = gnulib/progname.c \ fs/ufs.c fs/ufs2.c fs/xfs.c fs/afs.c fs/afs_be.c \ fs/befs.c fs/befs_be.c fs/tar.c \ \ - partmap/msdos.c partmap/bsdlabel.c partmap/gpt.c \ + partmap/msdos.c partmap/bsdlabel.c partmap/sunpc.c \ + partmap/gpt.c \ \ disk/raid.c disk/mdraid_linux.c disk/lvm.c \ util/raid.c util/lvm.c \ diff --git a/partmap/sunpc.c b/partmap/sunpc.c new file mode 100644 index 000000000..ea69c28b9 --- /dev/null +++ b/partmap/sunpc.c @@ -0,0 +1,144 @@ +/* sunpc.c - Read SUN PC style partition tables. */ +/* + * GRUB -- GRand Unified Bootloader + * Copyright (C) 2002,2005,2006,2007,2009 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 + +#define GRUB_PARTMAP_SUN_PC_MAGIC 0xDABE +#define GRUB_PARTMAP_SUN_PC_MAX_PARTS 16 +#define GRUB_PARTMAP_SUN_PC_WHOLE_DISK_ID 0x05 + +struct grub_sun_pc_partition_descriptor +{ + grub_uint16_t id; + grub_uint16_t unused; + grub_uint32_t start_sector; + grub_uint32_t num_sectors; +} __attribute__ ((packed)); + +struct grub_sun_pc_block +{ + grub_uint8_t unused[72]; + struct grub_sun_pc_partition_descriptor partitions[GRUB_PARTMAP_SUN_PC_MAX_PARTS]; + grub_uint8_t unused2[244]; + grub_uint16_t magic; /* Magic number. */ + grub_uint16_t csum; /* Label xor'd checksum. */ +} __attribute__ ((packed)); + +static struct grub_partition_map grub_sun_pc_partition_map; + +/* Verify checksum (true=ok). */ +static int +grub_sun_is_valid (struct grub_sun_pc_block *label) +{ + grub_uint16_t *pos; + grub_uint16_t sum = 0; + + for (pos = (grub_uint16_t *) label; + pos < (grub_uint16_t *) (label + 1); + pos++) + sum ^= *pos; + + return ! sum; +} + +static grub_err_t +sun_pc_partition_map_iterate (grub_disk_t disk, + int (*hook) (grub_disk_t disk, + const grub_partition_t partition)) +{ + grub_partition_t p; + struct grub_sun_pc_block block; + int partnum; + grub_err_t err; + + p = (grub_partition_t) grub_zalloc (sizeof (struct grub_partition)); + if (! p) + return grub_errno; + + p->partmap = &grub_sun_pc_partition_map; + err = grub_disk_read (disk, 1, 0, sizeof (struct grub_sun_pc_block), &block); + if (err) + { + grub_free (p); + return err; + } + + if (GRUB_PARTMAP_SUN_PC_MAGIC != grub_le_to_cpu16 (block.magic)) + { + grub_free (p); + return grub_error (GRUB_ERR_BAD_PART_TABLE, + "not a sun_pc partition table"); + } + + if (! grub_sun_is_valid (&block)) + { + grub_free (p); + return grub_error (GRUB_ERR_BAD_PART_TABLE, "invalid checksum"); + } + + /* Maybe another error value would be better, because partition + table _is_ recognized but invalid. */ + for (partnum = 0; partnum < GRUB_PARTMAP_SUN_PC_MAX_PARTS; partnum++) + { + struct grub_sun_pc_partition_descriptor *desc; + + if (block.partitions[partnum].id == 0 + || block.partitions[partnum].id == GRUB_PARTMAP_SUN_PC_WHOLE_DISK_ID) + continue; + + desc = &block.partitions[partnum]; + p->start = grub_le_to_cpu32 (desc->start_sector); + p->len = grub_le_to_cpu32 (desc->num_sectors); + p->number = partnum; + if (p->len) + { + if (hook (disk, p)) + partnum = GRUB_PARTMAP_SUN_PC_MAX_PARTS; + } + } + + grub_free (p); + + return grub_errno; +} + +/* Partition map type. */ +static struct grub_partition_map grub_sun_pc_partition_map = + { + .name = "sunpc", + .iterate = sun_pc_partition_map_iterate, + }; + +GRUB_MOD_INIT(part_sunpc) +{ + grub_partition_map_register (&grub_sun_pc_partition_map); +} + +GRUB_MOD_FINI(part_sunpc) +{ + grub_partition_map_unregister (&grub_sun_pc_partition_map); +} +