From 05d4e36ff618034f037fa91345627ff721926d2e Mon Sep 17 00:00:00 2001 From: Vladimir 'phcoder' Serbinenko Date: Sat, 6 Feb 2010 21:36:24 +0100 Subject: [PATCH] reimport sunpc --- conf/any-emu.rmk | 3 +- conf/common.rmk | 11 +++- conf/i386-pc.rmk | 3 +- partmap/sunpc.c | 144 +++++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 156 insertions(+), 5 deletions(-) create mode 100644 partmap/sunpc.c diff --git a/conf/any-emu.rmk b/conf/any-emu.rmk index 9038aa45d..33cb001a5 100644 --- a/conf/any-emu.rmk +++ b/conf/any-emu.rmk @@ -34,7 +34,8 @@ grub_emu_SOURCES = commands/minicmd.c commands/cat.c commands/cmp.c \ script/main.c script/execute.c script/function.c \ script/lexer.c script/script.c grub_script.tab.c \ partmap/amiga.c partmap/apple.c partmap/msdos.c partmap/sun.c \ - partmap/acorn.c partmap/gpt.c partmap/bsdlabel.c \ + partmap/acorn.c partmap/gpt.c partmap/bsdlabel.c \ + partmap/sunpc.c \ \ fs/affs.c fs/cpio.c fs/fat.c fs/ext2.c fs/hfs.c \ fs/hfsplus.c fs/iso9660.c fs/udf.c fs/jfs.c fs/minix.c \ diff --git a/conf/common.rmk b/conf/common.rmk index 009db2907..aefb5ac6f 100644 --- a/conf/common.rmk +++ b/conf/common.rmk @@ -33,7 +33,7 @@ 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 @@ -70,8 +70,8 @@ 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 \ @@ -383,6 +383,11 @@ 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 02675be91..4cdc819bd 100644 --- a/conf/i386-pc.rmk +++ b/conf/i386-pc.rmk @@ -104,7 +104,8 @@ 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..e3b16f00c --- /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(sun_pc_partition_map) +{ + grub_partition_map_register (&grub_sun_pc_partition_map); +} + +GRUB_MOD_FINI(sun_pc_partition_map) +{ + grub_partition_map_unregister (&grub_sun_pc_partition_map); +} +