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
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 \
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 \
--- /dev/null
+/* 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 <http://www.gnu.org/licenses/>.
+ */
+
+#include <grub/partition.h>
+#include <grub/disk.h>
+#include <grub/mm.h>
+#include <grub/misc.h>
+#include <grub/dl.h>
+#include <grub/symbol.h>
+#include <grub/types.h>
+#include <grub/err.h>
+
+#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);
+}
+
projects / thirdparty / grub.git / commitdiff
