|
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH] Add ZFS libfsimage support patch
# HG changeset patch
# User john.levon@xxxxxxx
# Date 1209521787 25200
# Node ID 51023851f6401182c0c2c200716e5bfcc8f14002
# Parent 7aabc2f601717f031b29cc219bcd80d04616575a
Add ZFS libfsimage support patch
Add support to pygrub and libfsimage to boot ZFS root filesystems.
Boot argument of zfs-bootfs is set to describe ZFS root pool and
boot filesystem object number. Boot argument bootpath is set to
describe the virtual device root mirror components.
Signed-off-by: Susan Kamm-Worrell <susan.kamm-worrell@xxxxxxx>
diff --git a/tools/libfsimage/Makefile b/tools/libfsimage/Makefile
--- a/tools/libfsimage/Makefile
+++ b/tools/libfsimage/Makefile
@@ -1,7 +1,7 @@ XEN_ROOT = ../..
XEN_ROOT = ../..
include $(XEN_ROOT)/tools/Rules.mk
-SUBDIRS-y = common ufs reiserfs iso9660 fat
+SUBDIRS-y = common ufs reiserfs iso9660 fat zfs
SUBDIRS-y += $(shell env CC="$(CC)" ./check-libext2fs)
.PHONY: all clean install
diff --git a/tools/libfsimage/common/fsimage.c
b/tools/libfsimage/common/fsimage.c
--- a/tools/libfsimage/common/fsimage.c
+++ b/tools/libfsimage/common/fsimage.c
@@ -17,7 +17,7 @@
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
- * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
+ * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
@@ -51,6 +51,7 @@ fsi_t *fsi_open_fsimage(const char *path
fsi->f_fd = fd;
fsi->f_off = off;
fsi->f_data = NULL;
+ fsi->f_bootstring = NULL;
pthread_mutex_lock(&fsi_lock);
err = find_plugin(fsi, path, options);
@@ -140,3 +141,29 @@ ssize_t fsi_pread_file(fsi_file_t *ffi,
return (ret);
}
+
+char *
+fsi_bootstring_alloc(fsi_t *fsi, size_t len)
+{
+ fsi->f_bootstring = malloc(len);
+ if (fsi->f_bootstring == NULL)
+ return (NULL);
+
+ bzero(fsi->f_bootstring, len);
+ return (fsi->f_bootstring);
+}
+
+void
+fsi_bootstring_free(fsi_t *fsi)
+{
+ if (fsi->f_bootstring != NULL) {
+ free(fsi->f_bootstring);
+ fsi->f_bootstring = NULL;
+ }
+}
+
+char *
+fsi_fs_bootstring(fsi_t *fsi)
+{
+ return (fsi->f_bootstring);
+}
diff --git a/tools/libfsimage/common/fsimage.h
b/tools/libfsimage/common/fsimage.h
--- a/tools/libfsimage/common/fsimage.h
+++ b/tools/libfsimage/common/fsimage.h
@@ -17,7 +17,7 @@
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
- * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
+ * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
@@ -45,6 +45,10 @@ ssize_t fsi_read_file(fsi_file_t *, void
ssize_t fsi_read_file(fsi_file_t *, void *, size_t);
ssize_t fsi_pread_file(fsi_file_t *, void *, size_t, uint64_t);
+char *fsi_bootstring_alloc(fsi_t *, size_t);
+void fsi_bootstring_free(fsi_t *);
+char *fsi_fs_bootstring(fsi_t *);
+
#ifdef __cplusplus
};
#endif
diff --git a/tools/libfsimage/common/fsimage_grub.c
b/tools/libfsimage/common/fsimage_grub.c
--- a/tools/libfsimage/common/fsimage_grub.c
+++ b/tools/libfsimage/common/fsimage_grub.c
@@ -17,7 +17,7 @@
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
- * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
+ * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
@@ -286,6 +286,7 @@ fsig_mount(fsi_t *fsi, const char *path,
if (!ops->fpo_mount(ffi, options)) {
fsip_file_free(ffi);
+ fsi_bootstring_free(fsi);
free(fsi->f_data);
fsi->f_data = NULL;
return (-1);
@@ -299,6 +300,7 @@ static int
static int
fsig_umount(fsi_t *fsi)
{
+ fsi_bootstring_free(fsi);
free(fsi->f_data);
return (0);
}
diff --git a/tools/libfsimage/common/fsimage_grub.h
b/tools/libfsimage/common/fsimage_grub.h
--- a/tools/libfsimage/common/fsimage_grub.h
+++ b/tools/libfsimage/common/fsimage_grub.h
@@ -17,7 +17,7 @@
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
- * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
+ * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
@@ -72,6 +72,12 @@ unsigned long fsig_log2(unsigned long);
#define ERR_FILELENGTH 1
#define ERR_BAD_FILETYPE 1
#define ERR_FILE_NOT_FOUND 1
+#define ERR_BAD_ARGUMENT 1
+#define ERR_FILESYSTEM_NOT_FOUND 1
+#define ERR_NO_BOOTPATH 1
+#define ERR_DEV_VALUES 1
+#define ERR_WONT_FIT 1
+#define ERR_READ 1
fsi_plugin_ops_t *fsig_init(fsi_plugin_t *, fsig_plugin_ops_t *);
diff --git a/tools/libfsimage/common/fsimage_priv.h
b/tools/libfsimage/common/fsimage_priv.h
--- a/tools/libfsimage/common/fsimage_priv.h
+++ b/tools/libfsimage/common/fsimage_priv.h
@@ -17,7 +17,7 @@
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
- * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
+ * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
@@ -46,6 +46,7 @@ struct fsi {
uint64_t f_off;
void *f_data;
fsi_plugin_t *f_plugin;
+ char *f_bootstring;
};
struct fsi_file {
diff --git a/tools/libfsimage/common/mapfile-GNU
b/tools/libfsimage/common/mapfile-GNU
--- a/tools/libfsimage/common/mapfile-GNU
+++ b/tools/libfsimage/common/mapfile-GNU
@@ -8,6 +8,9 @@ VERSION {
fsi_close_file;
fsi_read_file;
fsi_pread_file;
+ fsi_bootstring_alloc;
+ fsi_bootstring_free;
+ fsi_fs_bootstring;
fsip_fs_set_data;
fsip_file_alloc;
diff --git a/tools/libfsimage/common/mapfile-SunOS
b/tools/libfsimage/common/mapfile-SunOS
--- a/tools/libfsimage/common/mapfile-SunOS
+++ b/tools/libfsimage/common/mapfile-SunOS
@@ -7,6 +7,9 @@ libfsimage.so.1.0 {
fsi_close_file;
fsi_read_file;
fsi_pread_file;
+ fsi_bootstring_alloc;
+ fsi_bootstring_free;
+ fsi_fs_bootstring;
fsip_fs_set_data;
fsip_file_alloc;
diff --git a/tools/libfsimage/zfs/Makefile b/tools/libfsimage/zfs/Makefile
new file mode 100644
--- /dev/null
+++ b/tools/libfsimage/zfs/Makefile
@@ -0,0 +1,37 @@
+#
+# GRUB -- GRand Unified Bootloader
+# Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc.
+#
+# This program 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 2 of the License, or
+# (at your option) any later version.
+#
+# This program 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 this program; if not, write to the Free Software
+# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+#
+
+#
+# Copyright 2008 Sun Microsystems, Inc. All rights reserved.
+# Use is subject to license terms.
+#
+
+XEN_ROOT = ../../..
+
+LIB_SRCS-y = fsys_zfs.c zfs_lzjb.c zfs_sha256.c zfs_fletcher.c
+
+FS = zfs
+
+.PHONY: all
+all: fs-all
+
+.PHONY: install
+install: fs-install
+
+include $(XEN_ROOT)/tools/libfsimage/Rules.mk
diff --git a/tools/libfsimage/zfs/fsys_zfs.c b/tools/libfsimage/zfs/fsys_zfs.c
new file mode 100644
--- /dev/null
+++ b/tools/libfsimage/zfs/fsys_zfs.c
@@ -0,0 +1,1457 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc.
+ *
+ * This program 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+/*
+ * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
+ * Use is subject to license terms.
+ */
+
+/*
+ * All files in the zfs directory are derived from the OpenSolaris
+ * zfs grub files. All files in the zfs-include directory were
+ * included without changes.
+ */
+
+/*
+ * The zfs plug-in routines for GRUB are:
+ *
+ * zfs_mount() - locates a valid uberblock of the root pool and reads
+ * in its MOS at the memory address MOS.
+ *
+ * zfs_open() - locates a plain file object by following the MOS
+ * and places its dnode at the memory address DNODE.
+ *
+ * zfs_read() - read in the data blocks pointed by the DNODE.
+ *
+ * ZFS_SCRATCH is used as a working area.
+ *
+ * (memory addr) MOS DNODE ZFS_SCRATCH
+ * | | |
+ * +-------V---------V----------V---------------+
+ * memory | | dnode | dnode | scratch |
+ * | | 512B | 512B | area |
+ * +--------------------------------------------+
+ */
+
+#include <stdio.h>
+#include <strings.h>
+
+/* From "shared.h" */
+#include "mb_info.h"
+
+/* Boot signature related defines for the findroot command */
+#define BOOTSIGN_DIR "/boot/grub/bootsign"
+#define BOOTSIGN_BACKUP "/etc/bootsign"
+
+/* Maybe redirect memory requests through grub_scratch_mem. */
+#define RAW_ADDR(x) (x)
+#define RAW_SEG(x) (x)
+
+/* ZFS will use the top 4 Meg of physical memory (below 4Gig) for sratch */
+#define ZFS_SCRATCH_SIZE 0x400000
+
+#define MIN(x, y) ((x) < (y) ? (x) : (y))
+/* End from shared.h */
+
+#include "fsys_zfs.h"
+
+/* cache for a file block of the currently zfs_open()-ed file */
+#define file_buf zfs_ba->zfs_file_buf
+#define file_start zfs_ba->zfs_file_start
+#define file_end zfs_ba->zfs_file_end
+
+/* cache for a dnode block */
+#define dnode_buf zfs_ba->zfs_dnode_buf
+#define dnode_mdn zfs_ba->zfs_dnode_mdn
+#define dnode_start zfs_ba->zfs_dnode_start
+#define dnode_end zfs_ba->zfs_dnode_end
+
+#define stackbase zfs_ba->zfs_stackbase
+
+decomp_entry_t decomp_table[ZIO_COMPRESS_FUNCTIONS] =
+{
+ {"noop", 0},
+ {"on", lzjb_decompress}, /* ZIO_COMPRESS_ON */
+ {"off", 0},
+ {"lzjb", lzjb_decompress} /* ZIO_COMPRESS_LZJB */
+};
+
+/* From disk_io.c */
+/* ZFS root filesystem for booting */
+#define current_bootpath zfs_ba->zfs_current_bootpath
+#define current_rootpool zfs_ba->zfs_current_rootpool
+#define current_bootfs zfs_ba->zfs_current_bootfs
+#define current_bootfs_obj zfs_ba->zfs_current_bootfs_obj
+#define is_zfs_mount (*fsig_int1(ffi))
+/* End from disk_io.c */
+
+#define is_zfs_open zfs_ba->zfs_open
+
+/*
+ * Our own version of bcmp().
+ */
+static int
+zfs_bcmp(const void *s1, const void *s2, size_t n)
+{
+ const unsigned char *ps1 = s1;
+ const unsigned char *ps2 = s2;
+
+ if (s1 != s2 && n != 0) {
+ do {
+ if (*ps1++ != *ps2++)
+ return (1);
+ } while (--n != 0);
+ }
+
+ return (0);
+}
+
+/*
+ * Our own version of log2(). Same thing as highbit()-1.
+ */
+static int
+zfs_log2(uint64_t num)
+{
+ int i = 0;
+
+ while (num > 1) {
+ i++;
+ num = num >> 1;
+ }
+
+ return (i);
+}
+
+/* Checksum Functions */
+static void
+zio_checksum_off(const void *buf, uint64_t size, zio_cksum_t *zcp)
+{
+ ZIO_SET_CHECKSUM(zcp, 0, 0, 0, 0);
+}
+
+/* Checksum Table and Values */
+zio_checksum_info_t zio_checksum_table[ZIO_CHECKSUM_FUNCTIONS] = {
+ {{NULL, NULL}, 0, 0, "inherit"},
+ {{NULL, NULL}, 0, 0, "on"},
+ {{zio_checksum_off, zio_checksum_off}, 0, 0, "off"},
+ {{zio_checksum_SHA256, zio_checksum_SHA256}, 1, 1, "label"},
+ {{zio_checksum_SHA256, zio_checksum_SHA256}, 1, 1, "gang_header"},
+ {{fletcher_2_native, fletcher_2_byteswap}, 0, 1, "zilog"},
+ {{fletcher_2_native, fletcher_2_byteswap}, 0, 0, "fletcher2"},
+ {{fletcher_4_native, fletcher_4_byteswap}, 1, 0, "fletcher4"},
+ {{zio_checksum_SHA256, zio_checksum_SHA256}, 1, 0, "SHA256"}
+};
+
+/*
+ * zio_checksum_verify: Provides support for checksum verification.
+ *
+ * Fletcher2, Fletcher4, and SHA256 are supported.
+ *
+ * Return:
+ * -1 = Failure
+ * 0 = Success
+ */
+static int
+zio_checksum_verify(blkptr_t *bp, char *data, int size)
+{
+ zio_cksum_t zc = bp->blk_cksum;
+ uint32_t checksum = BP_IS_GANG(bp) ? ZIO_CHECKSUM_GANG_HEADER :
+ BP_GET_CHECKSUM(bp);
+ int byteswap = BP_SHOULD_BYTESWAP(bp);
+ zio_block_tail_t *zbt = (zio_block_tail_t *)(data + size) - 1;
+ zio_checksum_info_t *ci = &zio_checksum_table[checksum];
+ zio_cksum_t actual_cksum, expected_cksum;
+
+ /* byteswap is not supported */
+ if (byteswap)
+ return (-1);
+
+ if (checksum >= ZIO_CHECKSUM_FUNCTIONS || ci->ci_func[0] == NULL)
+ return (-1);
+
+ if (ci->ci_zbt) {
+ if (checksum == ZIO_CHECKSUM_GANG_HEADER) {
+ /*
+ * 'gang blocks' is not supported.
+ */
+ return (-1);
+ }
+
+ if (zbt->zbt_magic == BSWAP_64(ZBT_MAGIC)) {
+ /* byte swapping is not supported */
+ return (-1);
+ } else {
+ expected_cksum = zbt->zbt_cksum;
+ zbt->zbt_cksum = zc;
+ ci->ci_func[0](data, size, &actual_cksum);
+ zbt->zbt_cksum = expected_cksum;
+ }
+ zc = expected_cksum;
+
+ } else {
+ if (BP_IS_GANG(bp))
+ return (-1);
+ ci->ci_func[byteswap](data, size, &actual_cksum);
+ }
+
+ if ((actual_cksum.zc_word[0] - zc.zc_word[0]) |
+ (actual_cksum.zc_word[1] - zc.zc_word[1]) |
+ (actual_cksum.zc_word[2] - zc.zc_word[2]) |
+ (actual_cksum.zc_word[3] - zc.zc_word[3]))
+ return (-1);
+
+ return (0);
+}
+
+/*
+ * vdev_label_offset takes "offset" (the offset within a vdev_label) and
+ * returns its physical disk offset (starting from the beginning of the vdev).
+ *
+ * Input:
+ * psize : Physical size of this vdev
+ * l : Label Number (0-3)
+ * offset : The offset with a vdev_label in which we want the physical
+ * address
+ * Return:
+ * Success : physical disk offset
+ * Failure : errnum = ERR_BAD_ARGUMENT, return value is meaningless
+ */
+static uint64_t
+vdev_label_offset(fsi_file_t *ffi, uint64_t psize, int l, uint64_t offset)
+{
+ /* XXX Need to add back label support! */
+ if (l >= VDEV_LABELS/2 || offset > sizeof (vdev_label_t)) {
+ errnum = ERR_BAD_ARGUMENT;
+ return (0);
+ }
+
+ return (offset + l * sizeof (vdev_label_t) + (l < VDEV_LABELS / 2 ?
+ 0 : psize - VDEV_LABELS * sizeof (vdev_label_t)));
+
+}
+
+/*
+ * vdev_uberblock_compare takes two uberblock structures and returns an integer
+ * indicating the more recent of the two.
+ * Return Value = 1 if ub2 is more recent
+ * Return Value = -1 if ub1 is more recent
+ * The most recent uberblock is determined using its transaction number and
+ * timestamp. The uberblock with the highest transaction number is
+ * considered "newer". If the transaction numbers of the two blocks match, the
+ * timestamps are compared to determine the "newer" of the two.
+ */
+static int
+vdev_uberblock_compare(uberblock_t *ub1, uberblock_t *ub2)
+{
+ if (ub1->ub_txg < ub2->ub_txg)
+ return (-1);
+ if (ub1->ub_txg > ub2->ub_txg)
+ return (1);
+
+ if (ub1->ub_timestamp < ub2->ub_timestamp)
+ return (-1);
+ if (ub1->ub_timestamp > ub2->ub_timestamp)
+ return (1);
+
+ return (0);
+}
+
+/*
+ * Three pieces of information are needed to verify an uberblock: the magic
+ * number, the version number, and the checksum.
+ *
+ * Currently Implemented: version number, magic number
+ * Need to Implement: checksum
+ *
+ * Return:
+ * 0 - Success
+ * -1 - Failure
+ */
+static int
+uberblock_verify(uberblock_phys_t *ub, int offset)
+{
+
+ uberblock_t *uber = &ub->ubp_uberblock;
+ blkptr_t bp;
+
+ BP_ZERO(&bp);
+ BP_SET_CHECKSUM(&bp, ZIO_CHECKSUM_LABEL);
+ BP_SET_BYTEORDER(&bp, ZFS_HOST_BYTEORDER);
+ ZIO_SET_CHECKSUM(&bp.blk_cksum, offset, 0, 0, 0);
+
+ if (zio_checksum_verify(&bp, (char *)ub, UBERBLOCK_SIZE) != 0)
+ return (-1);
+
+ if (uber->ub_magic == UBERBLOCK_MAGIC &&
+ uber->ub_version >= SPA_VERSION_1 &&
+ uber->ub_version <= SPA_VERSION)
+ return (0);
+
+ return (-1);
+}
+
+/*
+ * Find the best uberblock.
+ * Return:
+ * Success - Pointer to the best uberblock.
+ * Failure - NULL
+ */
+static uberblock_phys_t *
+find_bestub(fsi_file_t *ffi, uberblock_phys_t *ub_array, int label)
+{
+ uberblock_phys_t *ubbest = NULL;
+ int i, offset;
+
+ for (i = 0; i < (VDEV_UBERBLOCK_RING >> VDEV_UBERBLOCK_SHIFT); i++) {
+ offset = vdev_label_offset(ffi, 0, label,
+ VDEV_UBERBLOCK_OFFSET(i));
+ if (errnum == ERR_BAD_ARGUMENT)
+ return (NULL);
+ if (uberblock_verify(&ub_array[i], offset) == 0) {
+ if (ubbest == NULL) {
+ ubbest = &ub_array[i];
+ } else if (vdev_uberblock_compare(
+ &(ub_array[i].ubp_uberblock),
+ &(ubbest->ubp_uberblock)) > 0) {
+ ubbest = &ub_array[i];
+ }
+ }
+ }
+
+ return (ubbest);
+}
+
+/*
+ * Read in a block and put its uncompressed data in buf.
+ *
+ * Return:
+ * 0 - success
+ * errnum - failure
+ */
+static int
+zio_read(fsi_file_t *ffi, blkptr_t *bp, void *buf, char *stack)
+{
+ uint64_t offset, sector;
+ int psize, lsize;
+ int i, comp, cksum;
+
+ psize = BP_GET_PSIZE(bp);
+ lsize = BP_GET_LSIZE(bp);
+ comp = BP_GET_COMPRESS(bp);
+ cksum = BP_GET_CHECKSUM(bp);
+
+ if ((unsigned int)comp >= ZIO_COMPRESS_FUNCTIONS ||
+ (comp != ZIO_COMPRESS_OFF &&
+ decomp_table[comp].decomp_func == NULL))
+ return (ERR_FSYS_CORRUPT);
+
+ /* pick a good dva from the block pointer */
+ for (i = 0; i < SPA_DVAS_PER_BP; i++) {
+
+ if (bp->blk_dva[i].dva_word[0] == 0 &&
+ bp->blk_dva[i].dva_word[1] == 0)
+ continue;
+
+ /* read in a block */
+ offset = DVA_GET_OFFSET(&bp->blk_dva[i]);
+ sector = DVA_OFFSET_TO_PHYS_SECTOR(offset);
+
+ if (comp != ZIO_COMPRESS_OFF) {
+
+ if (devread(ffi, sector, 0, psize, stack) == 0)
+ continue;
+ if (zio_checksum_verify(bp, stack, psize) != 0)
+ continue;
+ decomp_table[comp].decomp_func(stack, buf, psize,
+ lsize);
+ } else {
+ if (devread(ffi, sector, 0, psize, buf) == 0)
+ continue;
+ if (zio_checksum_verify(bp, buf, psize) != 0)
+ continue;
+ }
+ return (0);
+ }
+
+ return (ERR_FSYS_CORRUPT);
+}
+
+/*
+ * Get the block from a block id.
+ * push the block onto the stack.
+ *
+ * Return:
+ * 0 - success
+ * errnum - failure
+ */
+static int
+dmu_read(fsi_file_t *ffi, dnode_phys_t *dn, uint64_t blkid, void *buf,
+ char *stack)
+{
+ int idx, level;
+ blkptr_t *bp_array = dn->dn_blkptr;
+ int epbs = dn->dn_indblkshift - SPA_BLKPTRSHIFT;
+ blkptr_t *bp, *tmpbuf;
+
+ bp = (blkptr_t *)stack;
+ stack += sizeof (blkptr_t);
+
+ tmpbuf = (blkptr_t *)stack;
+ stack += 1<<dn->dn_indblkshift;
+
+ for (level = dn->dn_nlevels - 1; level >= 0; level--) {
+ idx = (blkid >> (epbs * level)) & ((1<<epbs)-1);
+ *bp = bp_array[idx];
+ if (level == 0)
+ tmpbuf = buf;
+ if (BP_IS_HOLE(bp)) {
+ grub_memset(buf, 0,
+ dn->dn_datablkszsec << SPA_MINBLOCKSHIFT);
+ break;
+ } else if ((errnum = zio_read(ffi, bp, tmpbuf, stack))) {
+ return (errnum);
+ }
+ bp_array = tmpbuf;
+ }
+
+ return (0);
+}
+
+/*
+ * mzap_lookup: Looks up property described by "name" and returns the value
+ * in "value".
+ *
+ * Return:
+ * 0 - success
+ * errnum - failure
+ */
+static int
+mzap_lookup(mzap_phys_t *zapobj, int objsize, char *name,
+ uint64_t *value)
+{
+ int i, chunks;
+ mzap_ent_phys_t *mzap_ent = zapobj->mz_chunk;
+
+ chunks = objsize/MZAP_ENT_LEN - 1;
+ for (i = 0; i < chunks; i++) {
+ if (strcmp(mzap_ent[i].mze_name, name) == 0) {
+ *value = mzap_ent[i].mze_value;
+ return (0);
+ }
+ }
+
+ return (ERR_FSYS_CORRUPT);
+}
+
+static uint64_t
+zap_hash(fsi_file_t *ffi, uint64_t salt, const char *name)
+{
+ static uint64_t table[256];
+ const uint8_t *cp;
+ uint8_t c;
+ uint64_t crc = salt;
+
+ if (table[128] == 0) {
+ uint64_t *ct;
+ int i, j;
+ for (i = 0; i < 256; i++) {
+ for (ct = table + i, *ct = i, j = 8; j > 0; j--)
+ *ct = (*ct >> 1) ^ (-(*ct & 1) &
+ ZFS_CRC64_POLY);
+ }
+ }
+
+ if (crc == 0 || table[128] != ZFS_CRC64_POLY) {
+ errnum = ERR_FSYS_CORRUPT;
+ return (0);
+ }
+
+ for (cp = (const uint8_t *)name; (c = *cp) != '\0'; cp++)
+ crc = (crc >> 8) ^ table[(crc ^ c) & 0xFF];
+
+ /*
+ * Only use 28 bits, since we need 4 bits in the cookie for the
+ * collision differentiator. We MUST use the high bits, since
+ * those are the onces that we first pay attention to when
+ * chosing the bucket.
+ */
+ crc &= ~((1ULL << (64 - ZAP_HASHBITS)) - 1);
+
+ return (crc);
+}
+
+/*
+ * Only to be used on 8-bit arrays.
+ * array_len is actual len in bytes (not encoded le_value_length).
+ * buf is null-terminated.
+ */
+static int
+zap_leaf_array_equal(zap_leaf_phys_t *l, int blksft, int chunk,
+ int array_len, const char *buf)
+{
+ int bseen = 0;
+
+ while (bseen < array_len) {
+ struct zap_leaf_array *la =
+ &ZAP_LEAF_CHUNK(l, blksft, chunk).l_array;
+ int toread = MIN(array_len - bseen, ZAP_LEAF_ARRAY_BYTES);
+
+ if (chunk >= ZAP_LEAF_NUMCHUNKS(blksft))
+ return (0);
+
+ if (zfs_bcmp(la->la_array, buf + bseen, toread) != 0)
+ break;
+ chunk = la->la_next;
+ bseen += toread;
+ }
+ return (bseen == array_len);
+}
+
+/*
+ * Given a zap_leaf_phys_t, walk thru the zap leaf chunks to get the
+ * value for the property "name".
+ *
+ * Return:
+ * 0 - success
+ * errnum - failure
+ */
+static int
+zap_leaf_lookup(zap_leaf_phys_t *l, int blksft, uint64_t h,
+ const char *name, uint64_t *value)
+{
+ uint16_t chunk;
+ struct zap_leaf_entry *le;
+
+ /* Verify if this is a valid leaf block */
+ if (l->l_hdr.lh_block_type != ZBT_LEAF)
+ return (ERR_FSYS_CORRUPT);
+ if (l->l_hdr.lh_magic != ZAP_LEAF_MAGIC)
+ return (ERR_FSYS_CORRUPT);
+
+ for (chunk = l->l_hash[LEAF_HASH(blksft, h)];
+ chunk != CHAIN_END; chunk = le->le_next) {
+
+ if (chunk >= ZAP_LEAF_NUMCHUNKS(blksft))
+ return (ERR_FSYS_CORRUPT);
+
+ le = ZAP_LEAF_ENTRY(l, blksft, chunk);
+
+ /* Verify the chunk entry */
+ if (le->le_type != ZAP_CHUNK_ENTRY)
+ return (ERR_FSYS_CORRUPT);
+
+ if (le->le_hash != h)
+ continue;
+
+ if (zap_leaf_array_equal(l, blksft, le->le_name_chunk,
+ le->le_name_length, name)) {
+
+ struct zap_leaf_array *la;
+ uint8_t *ip;
+
+ if (le->le_int_size != 8 || le->le_value_length != 1)
+ return (ERR_FSYS_CORRUPT);
+
+ /* get the uint64_t property value */
+ la = &ZAP_LEAF_CHUNK(l, blksft,
+ le->le_value_chunk).l_array;
+ ip = la->la_array;
+
+ *value = (uint64_t)ip[0] << 56 | (uint64_t)ip[1] << 48 |
+ (uint64_t)ip[2] << 40 | (uint64_t)ip[3] << 32 |
+ (uint64_t)ip[4] << 24 | (uint64_t)ip[5] << 16 |
+ (uint64_t)ip[6] << 8 | (uint64_t)ip[7];
+
+ return (0);
+ }
+ }
+
+ return (ERR_FSYS_CORRUPT);
+}
+
+/*
+ * Fat ZAP lookup
+ *
+ * Return:
+ * 0 - success
+ * errnum - failure
+ */
+static int
+fzap_lookup(fsi_file_t *ffi, dnode_phys_t *zap_dnode, zap_phys_t *zap,
+ char *name, uint64_t *value, char *stack)
+{
+ zap_leaf_phys_t *l;
+ uint64_t hash, idx, blkid;
+ int blksft = zfs_log2(zap_dnode->dn_datablkszsec << DNODE_SHIFT);
+
+ /* Verify if this is a fat zap header block */
+ if (zap->zap_magic != (uint64_t)ZAP_MAGIC)
+ return (ERR_FSYS_CORRUPT);
+
+ hash = zap_hash(ffi, zap->zap_salt, name);
+ if (errnum)
+ return (errnum);
+
+ /* get block id from index */
+ if (zap->zap_ptrtbl.zt_numblks != 0) {
+ /* external pointer tables not supported */
+ return (ERR_FSYS_CORRUPT);
+ }
+ idx = ZAP_HASH_IDX(hash, zap->zap_ptrtbl.zt_shift);
+ blkid = ((uint64_t *)zap)[idx + (1<<(blksft-3-1))];
+
+ /* Get the leaf block */
+ l = (zap_leaf_phys_t *)stack;
+ stack += 1<<blksft;
+ if ((errnum = dmu_read(ffi, zap_dnode, blkid, l, stack)))
+ return (errnum);
+
+ return (zap_leaf_lookup(l, blksft, hash, name, value));
+}
+
+/*
+ * Read in the data of a zap object and find the value for a matching
+ * property name.
+ *
+ * Return:
+ * 0 - success
+ * errnum - failure
+ */
+static int
+zap_lookup(fsi_file_t *ffi, dnode_phys_t *zap_dnode, char *name,
+ uint64_t *val, char *stack)
+{
+ uint64_t block_type;
+ int size;
+ void *zapbuf;
+
+ /* Read in the first block of the zap object data. */
+ zapbuf = stack;
+ size = zap_dnode->dn_datablkszsec << SPA_MINBLOCKSHIFT;
+ stack += size;
+ if ((errnum = dmu_read(ffi, zap_dnode, 0, zapbuf, stack)))
+ return (errnum);
+
+ block_type = *((uint64_t *)zapbuf);
+
+ if (block_type == ZBT_MICRO) {
+ return (mzap_lookup(zapbuf, size, name, val));
+ } else if (block_type == ZBT_HEADER) {
+ /* this is a fat zap */
+ return (fzap_lookup(ffi, zap_dnode, zapbuf, name,
+ val, stack));
+ }
+
+ return (ERR_FSYS_CORRUPT);
+}
+
+/*
+ * Get the dnode of an object number from the metadnode of an object set.
+ *
+ * Input
+ * mdn - metadnode to get the object dnode
+ * objnum - object number for the object dnode
+ * buf - data buffer that holds the returning dnode
+ * stack - scratch area
+ *
+ * Return:
+ * 0 - success
+ * errnum - failure
+ */
+static int
+dnode_get(fsi_file_t *ffi, dnode_phys_t *mdn, uint64_t objnum,
+ uint8_t type, dnode_phys_t *buf, char *stack)
+{
+ uint64_t blkid, blksz; /* the block id this object dnode is in */
+ int epbs; /* shift of number of dnodes in a block */
+ int idx; /* index within a block */
+ dnode_phys_t *dnbuf;
+ zfs_bootarea_t *zfs_ba = (zfs_bootarea_t *)ffi->ff_fsi->f_data;
+
+ blksz = mdn->dn_datablkszsec << SPA_MINBLOCKSHIFT;
+ epbs = zfs_log2(blksz) - DNODE_SHIFT;
+ blkid = objnum >> epbs;
+ idx = objnum & ((1<<epbs)-1);
+
+ if (dnode_buf != NULL && dnode_mdn == mdn &&
+ objnum >= dnode_start && objnum < dnode_end) {
+ grub_memmove(buf, &dnode_buf[idx], DNODE_SIZE);
+ VERIFY_DN_TYPE(buf, type);
+ return (0);
+ }
+
+ if (dnode_buf && blksz == 1<<DNODE_BLOCK_SHIFT) {
+ dnbuf = dnode_buf;
+ dnode_mdn = mdn;
+ dnode_start = blkid << epbs;
+ dnode_end = (blkid + 1) << epbs;
+ } else {
+ dnbuf = (dnode_phys_t *)stack;
+ stack += blksz;
+ }
+
+ if ((errnum = dmu_read(ffi, mdn, blkid, (char *)dnbuf, stack)))
+ return (errnum);
+
+ grub_memmove(buf, &dnbuf[idx], DNODE_SIZE);
+ VERIFY_DN_TYPE(buf, type);
+
+ return (0);
+}
+
+/*
+ * Check if this is a special file that resides at the top
+ * dataset of the pool. Currently this is the GRUB menu,
+ * boot signature and boot signature backup.
+ * str starts with '/'.
+ */
+static int
+is_top_dataset_file(char *str)
+{
+ char *tptr;
+
+ if (((tptr = strstr(str, "menu.lst"))) &&
+ (tptr[8] == '\0' || tptr[8] == ' ') &&
+ *(tptr-1) == '/')
+ return (1);
+
+ if (strncmp(str, BOOTSIGN_DIR"/",
+ strlen(BOOTSIGN_DIR) + 1) == 0)
+ return (1);
+
+ if (strcmp(str, BOOTSIGN_BACKUP) == 0)
+ return (1);
+
+ return (0);
+}
+
+/*
+ * Get the file dnode for a given file name where mdn is the meta dnode
+ * for this ZFS object set. When found, place the file dnode in dn.
+ * The 'path' argument will be mangled.
+ *
+ * Return:
+ * 0 - success
+ * errnum - failure
+ */
+static int
+dnode_get_path(fsi_file_t *ffi, dnode_phys_t *mdn, char *path,
+ dnode_phys_t *dn, char *stack)
+{
+ uint64_t objnum, version;
+ char *cname, ch;
+
+ if ((errnum = dnode_get(ffi, mdn, MASTER_NODE_OBJ, DMU_OT_MASTER_NODE,
+ dn, stack)))
+ return (errnum);
+
+ if ((errnum = zap_lookup(ffi, dn, ZPL_VERSION_STR, &version, stack)))
+ return (errnum);
+ if (version > ZPL_VERSION)
+ return (-1);
+
+ if ((errnum = zap_lookup(ffi, dn, ZFS_ROOT_OBJ, &objnum, stack)))
+ return (errnum);
+
+ if ((errnum = dnode_get(ffi, mdn, objnum, DMU_OT_DIRECTORY_CONTENTS,
+ dn, stack)))
+ return (errnum);
+
+ /* skip leading slashes */
+ while (*path == '/')
+ path++;
+
+ while (*path && !isspace(*path)) {
+
+ /* get the next component name */
+ cname = path;
+ while (*path && !isspace(*path) && *path != '/')
+ path++;
+ ch = *path;
+ *path = 0; /* ensure null termination */
+
+ if ((errnum = zap_lookup(ffi, dn, cname, &objnum, stack)))
+ return (errnum);
+
+ objnum = ZFS_DIRENT_OBJ(objnum);
+ if ((errnum = dnode_get(ffi, mdn, objnum, 0, dn, stack)))
+ return (errnum);
+
+ *path = ch;
+ while (*path == '/')
+ path++;
+ }
+
+ /* We found the dnode for this file. Verify if it is a plain file. */
+ VERIFY_DN_TYPE(dn, DMU_OT_PLAIN_FILE_CONTENTS);
+
+ return (0);
+}
+
+/*
+ * Get the default 'bootfs' property value from the rootpool.
+ *
+ * Return:
+ * 0 - success
+ * errnum -failure
+ */
+static int
+get_default_bootfsobj(fsi_file_t *ffi, dnode_phys_t *mosmdn,
+ uint64_t *obj, char *stack)
+{
+ uint64_t objnum = 0;
+ dnode_phys_t *dn = (dnode_phys_t *)stack;
+ stack += DNODE_SIZE;
+
+ if ((errnum = dnode_get(ffi, mosmdn, DMU_POOL_DIRECTORY_OBJECT,
+ DMU_OT_OBJECT_DIRECTORY, dn, stack)))
+ return (errnum);
+
+ /*
+ * find the object number for 'pool_props', and get the dnode
+ * of the 'pool_props'.
+ */
+ if (zap_lookup(ffi, dn, DMU_POOL_PROPS, &objnum, stack))
+ return (ERR_FILESYSTEM_NOT_FOUND);
+
+ if ((errnum = dnode_get(ffi, mosmdn, objnum, DMU_OT_POOL_PROPS, dn,
+ stack)))
+ return (errnum);
+
+ if (zap_lookup(ffi, dn, ZPOOL_PROP_BOOTFS, &objnum, stack))
+ return (ERR_FILESYSTEM_NOT_FOUND);
+
+ if (!objnum)
+ return (ERR_FILESYSTEM_NOT_FOUND);
+
+
+ *obj = objnum;
+ return (0);
+}
+
+/*
+ * Given a MOS metadnode, get the metadnode of a given filesystem name
(fsname),
+ * e.g. pool/rootfs, or a given object number (obj), e.g. the object number
+ * of pool/rootfs.
+ *
+ * If no fsname and no obj are given, return the DSL_DIR metadnode.
+ * If fsname is given, return its metadnode and its matching object number.
+ * If only obj is given, return the metadnode for this object number.
+ *
+ * Return:
+ * 0 - success
+ * errnum - failure
+ */
+static int
+get_objset_mdn(fsi_file_t *ffi, dnode_phys_t *mosmdn, char *fsname,
+ uint64_t *obj, dnode_phys_t *mdn, char *stack)
+{
+ uint64_t objnum, headobj;
+ char *cname, ch;
+ blkptr_t *bp;
+ objset_phys_t *osp;
+
+ if (fsname == NULL && obj) {
+ headobj = *obj;
+ goto skip;
+ }
+
+ if ((errnum = dnode_get(ffi, mosmdn, DMU_POOL_DIRECTORY_OBJECT,
+ DMU_OT_OBJECT_DIRECTORY, mdn, stack)))
+ return (errnum);
+
+ if ((errnum = zap_lookup(ffi, mdn, DMU_POOL_ROOT_DATASET, &objnum,
+ stack)))
+ return (errnum);
+
+ if ((errnum = dnode_get(ffi, mosmdn, objnum, DMU_OT_DSL_DIR, mdn,
+ stack)))
+ return (errnum);
+
+ if (fsname == NULL) {
+ headobj =
+ ((dsl_dir_phys_t *)DN_BONUS(mdn))->dd_head_dataset_obj;
+ goto skip;
+ }
+
+ /* take out the pool name */
+ while (*fsname && !isspace(*fsname) && *fsname != '/')
+ fsname++;
+
+ while (*fsname && !isspace(*fsname)) {
+ uint64_t childobj;
+
+ while (*fsname == '/')
+ fsname++;
+
+ cname = fsname;
+ while (*fsname && !isspace(*fsname) && *fsname != '/')
+ fsname++;
+ ch = *fsname;
+ *fsname = 0;
+
+ childobj =
+ ((dsl_dir_phys_t *)DN_BONUS(mdn))->dd_child_dir_zapobj;
+ if ((errnum = dnode_get(ffi, mosmdn, childobj,
+ DMU_OT_DSL_DIR_CHILD_MAP, mdn, stack)))
+ return (errnum);
+
+ if (zap_lookup(ffi, mdn, cname, &objnum, stack))
+ return (ERR_FILESYSTEM_NOT_FOUND);
+
+ if ((errnum = dnode_get(ffi, mosmdn, objnum, DMU_OT_DSL_DIR,
+ mdn, stack)))
+ return (errnum);
+
+ *fsname = ch;
+ }
+ headobj = ((dsl_dir_phys_t *)DN_BONUS(mdn))->dd_head_dataset_obj;
+ if (obj)
+ *obj = headobj;
+
+skip:
+ if ((errnum = dnode_get(ffi, mosmdn, headobj, DMU_OT_DSL_DATASET, mdn,
+ stack)))
+ return (errnum);
+
+ /* TODO: Add snapshot support here - for fsname=snapshot-name */
+
+ bp = &((dsl_dataset_phys_t *)DN_BONUS(mdn))->ds_bp;
+ osp = (objset_phys_t *)stack;
+ stack += sizeof (objset_phys_t);
+ if ((errnum = zio_read(ffi, bp, osp, stack)))
+ return (errnum);
+
+ grub_memmove((char *)mdn, (char *)&osp->os_meta_dnode, DNODE_SIZE);
+
+ return (0);
+}
+
+/*
+ * For a given XDR packed nvlist, verify the first 4 bytes and move on.
+ *
+ * An XDR packed nvlist is encoded as (comments from nvs_xdr_create) :
+ *
+ * encoding method/host endian (4 bytes)
+ * nvl_version (4 bytes)
+ * nvl_nvflag (4 bytes)
+ * encoded nvpairs:
+ * encoded size of the nvpair (4 bytes)
+ * decoded size of the nvpair (4 bytes)
+ * name string size (4 bytes)
+ * name string data (sizeof(NV_ALIGN4(string))
+ * data type (4 bytes)
+ * # of elements in the nvpair (4 bytes)
+ * data
+ * 2 zero's for the last nvpair
+ * (end of the entire list) (8 bytes)
+ *
+ * Return:
+ * 0 - success
+ * 1 - failure
+ */
+static int
+nvlist_unpack(char *nvlist, char **out)
+{
+ /* Verify if the 1st and 2nd byte in the nvlist are valid. */
+ if (nvlist[0] != NV_ENCODE_XDR || nvlist[1] != HOST_ENDIAN)
+ return (1);
+
+ nvlist += 4;
+ *out = nvlist;
+ return (0);
+}
+
+static char *
+nvlist_array(char *nvlist, int index)
+{
+ int i, encode_size;
+
+ for (i = 0; i < index; i++) {
+ /* skip the header, nvl_version, and nvl_nvflag */
+ nvlist = nvlist + 4 * 2;
+
+ while ((encode_size = BSWAP_32(*(uint32_t *)nvlist)))
+ nvlist += encode_size; /* goto the next nvpair */
+
+ nvlist = nvlist + 4 * 2; /* skip the ending 2 zeros - 8 bytes */
+ }
+
+ return (nvlist);
+}
+
+static int
+nvlist_lookup_value(char *nvlist, char *name, void *val, int valtype,
+ int *nelmp)
+{
+ int name_len, type, slen, encode_size;
+ char *nvpair, *nvp_name, *strval = val;
+ uint64_t *intval = val;
+
+ /* skip the header, nvl_version, and nvl_nvflag */
+ nvlist = nvlist + 4 * 2;
+
+ /*
+ * Loop thru the nvpair list
+ * The XDR representation of an integer is in big-endian byte order.
+ */
+ while ((encode_size = BSWAP_32(*(uint32_t *)nvlist))) {
+
+ nvpair = nvlist + 4 * 2; /* skip the encode/decode size */
+
+ name_len = BSWAP_32(*(uint32_t *)nvpair);
+ nvpair += 4;
+
+ nvp_name = nvpair;
+ nvpair = nvpair + ((name_len + 3) & ~3); /* align */
+
+ type = BSWAP_32(*(uint32_t *)nvpair);
+ nvpair += 4;
+
+ if (((strncmp(nvp_name, name, name_len) == 0) &&
+ type == valtype)) {
+ int nelm;
+
+ if (((nelm = BSWAP_32(*(uint32_t *)nvpair)) < 1))
+ return (1);
+ nvpair += 4;
+
+ switch (valtype) {
+ case DATA_TYPE_STRING:
+ slen = BSWAP_32(*(uint32_t *)nvpair);
+ nvpair += 4;
+ grub_memmove(strval, nvpair, slen);
+ strval[slen] = '\0';
+ return (0);
+
+ case DATA_TYPE_UINT64:
+ *intval = BSWAP_64(*(uint64_t *)nvpair);
+ return (0);
+
+ case DATA_TYPE_NVLIST:
+ *(void **)val = (void *)nvpair;
+ return (0);
+
+ case DATA_TYPE_NVLIST_ARRAY:
+ *(void **)val = (void *)nvpair;
+ if (nelmp)
+ *nelmp = nelm;
+ return (0);
+ }
+ }
+
+ nvlist += encode_size; /* goto the next nvpair */
+ }
+
+ return (1);
+}
+
+/*
+ * Check if this vdev is online and is in a good state.
+ */
+static int
+vdev_validate(char *nv)
+{
+ uint64_t ival;
+
+ if (nvlist_lookup_value(nv, ZPOOL_CONFIG_OFFLINE, &ival,
+ DATA_TYPE_UINT64, NULL) == 0 ||
+ nvlist_lookup_value(nv, ZPOOL_CONFIG_FAULTED, &ival,
+ DATA_TYPE_UINT64, NULL) == 0 ||
+ nvlist_lookup_value(nv, ZPOOL_CONFIG_DEGRADED, &ival,
+ DATA_TYPE_UINT64, NULL) == 0 ||
+ nvlist_lookup_value(nv, ZPOOL_CONFIG_REMOVED, &ival,
+ DATA_TYPE_UINT64, NULL) == 0)
+ return (ERR_DEV_VALUES);
+
+ return (0);
+}
+
+/*
+ * Get a list of valid vdev pathname from the boot device.
+ * The caller should already allocate MAXNAMELEN memory for bootpath.
+ */
+static int
+vdev_get_bootpath(char *nv, char *bootpath)
+{
+ char type[16];
+
+ bootpath[0] = '\0';
+ if (nvlist_lookup_value(nv, ZPOOL_CONFIG_TYPE, &type, DATA_TYPE_STRING,
+ NULL))
+ return (ERR_FSYS_CORRUPT);
+
+ if (strcmp(type, VDEV_TYPE_DISK) == 0) {
+ if (vdev_validate(nv) != 0 ||
+ nvlist_lookup_value(nv, ZPOOL_CONFIG_PHYS_PATH, bootpath,
+ DATA_TYPE_STRING, NULL) != 0)
+ return (ERR_NO_BOOTPATH);
+
+ } else if (strcmp(type, VDEV_TYPE_MIRROR) == 0) {
+ int nelm, i;
+ char *child;
+
+ if (nvlist_lookup_value(nv, ZPOOL_CONFIG_CHILDREN, &child,
+ DATA_TYPE_NVLIST_ARRAY, &nelm))
+ return (ERR_FSYS_CORRUPT);
+
+ for (i = 0; i < nelm; i++) {
+ char tmp_path[MAXNAMELEN];
+ char *child_i;
+
+ child_i = nvlist_array(child, i);
+ if (vdev_validate(child_i) != 0)
+ continue;
+
+ if (nvlist_lookup_value(child_i, ZPOOL_CONFIG_PHYS_PATH,
+ tmp_path, DATA_TYPE_STRING, NULL) != 0)
+ return (ERR_NO_BOOTPATH);
+
+ if ((strlen(bootpath) + strlen(tmp_path)) > MAXNAMELEN)
+ return (ERR_WONT_FIT);
+
+ if (strlen(bootpath) == 0)
+ sprintf(bootpath, "%s", tmp_path);
+ else
+ sprintf(bootpath, "%s %s", bootpath, tmp_path);
+ }
+ }
+
+ return (strlen(bootpath) > 0 ? 0 : ERR_NO_BOOTPATH);
+}
+
+/*
+ * Check the disk label information and retrieve needed vdev name-value pairs.
+ *
+ * Return:
+ * 0 - success
+ * ERR_* - failure
+ */
+static int
+check_pool_label(fsi_file_t *ffi, int label, char *stack)
+{
+ vdev_phys_t *vdev;
+ uint64_t sector, pool_state, txg = 0;
+ char *nvlist, *nv;
+ zfs_bootarea_t *zfs_ba = (zfs_bootarea_t *)ffi->ff_fsi->f_data;
+
+ sector = (label * sizeof (vdev_label_t) + VDEV_SKIP_SIZE +
+ VDEV_BOOT_HEADER_SIZE) >> SPA_MINBLOCKSHIFT;
+
+ /* Read in the vdev name-value pair list (112K). */
+ if (devread(ffi, sector, 0, VDEV_PHYS_SIZE, stack) == 0)
+ return (ERR_READ);
+
+ vdev = (vdev_phys_t *)stack;
+
+ if (nvlist_unpack(vdev->vp_nvlist, &nvlist))
+ return (ERR_FSYS_CORRUPT);
+
+ if (nvlist_lookup_value(nvlist, ZPOOL_CONFIG_POOL_STATE, &pool_state,
+ DATA_TYPE_UINT64, NULL))
+ return (ERR_FSYS_CORRUPT);
+
+ if (pool_state == POOL_STATE_DESTROYED)
+ return (ERR_FILESYSTEM_NOT_FOUND);
+
+ if (nvlist_lookup_value(nvlist, ZPOOL_CONFIG_POOL_NAME,
+ current_rootpool, DATA_TYPE_STRING, NULL))
+ return (ERR_FSYS_CORRUPT);
+
+ if (nvlist_lookup_value(nvlist, ZPOOL_CONFIG_POOL_TXG, &txg,
+ DATA_TYPE_UINT64, NULL))
+ return (ERR_FSYS_CORRUPT);
+
+ /* not an active device */
+ if (txg == 0)
+ return (ERR_NO_BOOTPATH);
+
+ if (nvlist_lookup_value(nvlist, ZPOOL_CONFIG_VDEV_TREE, &nv,
+ DATA_TYPE_NVLIST, NULL))
+ return (ERR_FSYS_CORRUPT);
+
+ if (vdev_get_bootpath(nv, current_bootpath))
+ return (ERR_NO_BOOTPATH);
+
+ return (0);
+}
+
+/*
+ * zfs_mount() locates a valid uberblock of the root pool and read in its MOS
+ * to the memory address MOS.
+ *
+ * Return:
+ * 1 - success
+ * 0 - failure
+ */
+int
+zfs_mount(fsi_file_t *ffi, const char *options)
+{
+ char *stack;
+ int label = 0;
+ uberblock_phys_t *ub_array, *ubbest = NULL;
+ objset_phys_t *osp;
+ zfs_bootarea_t *zfs_ba;
+
+ /* if zfs is already mounted, don't do it again */
+ if (is_zfs_mount == 1)
+ return (1);
+
+ /* get much bigger data block for zfs */
+ if (((zfs_ba = malloc(sizeof (zfs_bootarea_t))) == NULL)) {
+ return (1);
+ }
+ bzero(zfs_ba, sizeof (zfs_bootarea_t));
+
+ /* replace small data area in fsi with big one */
+ free(ffi->ff_fsi->f_data);
+ ffi->ff_fsi->f_data = (void *)zfs_ba;
+
+ /* If an boot filesystem is passed in, set it to current_bootfs */
+ if (options != NULL) {
+ if (strlen(options) < MAXNAMELEN) {
+ strcpy(current_bootfs, options);
+ }
+ }
+
+ stackbase = ZFS_SCRATCH;
+ stack = stackbase;
+ ub_array = (uberblock_phys_t *)stack;
+ stack += VDEV_UBERBLOCK_RING;
+
+ osp = (objset_phys_t *)stack;
+ stack += sizeof (objset_phys_t);
+
+ /* XXX add back labels support? */
+ for (label = 0; ubbest == NULL && label < (VDEV_LABELS/2); label++) {
+ uint64_t sector = (label * sizeof (vdev_label_t) +
+ VDEV_SKIP_SIZE + VDEV_BOOT_HEADER_SIZE +
+ VDEV_PHYS_SIZE) >> SPA_MINBLOCKSHIFT;
+
+
+ /* Read in the uberblock ring (128K). */
+ if (devread(ffi, sector, 0, VDEV_UBERBLOCK_RING,
+ (char *)ub_array) == 0)
+ continue;
+
+ if ((ubbest = find_bestub(ffi, ub_array, label)) != NULL &&
+ zio_read(ffi, &ubbest->ubp_uberblock.ub_rootbp, osp, stack)
+ == 0) {
+
+ VERIFY_OS_TYPE(osp, DMU_OST_META);
+
+ /* Got the MOS. Save it at the memory addr MOS. */
+ grub_memmove(MOS, &osp->os_meta_dnode, DNODE_SIZE);
+
+ if (check_pool_label(ffi, label, stack))
+ return (0);
+
+ /*
+ * Copy fsi->f_data to ffi->ff_data since
+ * fsig_mount copies from ff_data to f_data
+ * overwriting fsi->f_data.
+ */
+ bcopy(zfs_ba, fsig_file_buf(ffi), FSYS_BUFLEN);
+
+ is_zfs_mount = 1;
+ return (1);
+ }
+ }
+
+ return (0);
+}
+
+/*
+ * zfs_open() locates a file in the rootpool by following the
+ * MOS and places the dnode of the file in the memory address DNODE.
+ *
+ * Return:
+ * 1 - success
+ * 0 - failure
+ */
+int
+zfs_open(fsi_file_t *ffi, char *filename)
+{
+ char *stack;
+ dnode_phys_t *mdn;
+ char *bootstring;
+ zfs_bootarea_t *zfs_ba = (zfs_bootarea_t *)ffi->ff_fsi->f_data;
+
+ file_buf = NULL;
+ stackbase = ZFS_SCRATCH;
+ stack = stackbase;
+
+ mdn = (dnode_phys_t *)stack;
+ stack += sizeof (dnode_phys_t);
+
+ dnode_mdn = NULL;
+ dnode_buf = (dnode_phys_t *)stack;
+ stack += 1<<DNODE_BLOCK_SHIFT;
+
+ /*
+ * menu.lst is placed at the root pool filesystem level,
+ * do not goto 'current_bootfs'.
+ */
+ if (is_top_dataset_file(filename)) {
+ if ((errnum = get_objset_mdn(ffi, MOS, NULL, NULL, mdn, stack)))
+ return (0);
+
+ current_bootfs_obj = 0;
+ } else {
+ if (current_bootfs[0] == '\0') {
+ /* Get the default root filesystem object number */
+ if ((errnum = get_default_bootfsobj(ffi, MOS,
+ ¤t_bootfs_obj, stack)))
+ return (0);
+ if ((errnum = get_objset_mdn(ffi, MOS, NULL,
+ ¤t_bootfs_obj, mdn, stack)))
+ return (0);
+ } else {
+ if ((errnum = get_objset_mdn(ffi, MOS,
+ current_bootfs, ¤t_bootfs_obj, mdn, stack)))
+ return (0);
+ }
+
+ /*
+ * Put zfs rootpool and boot obj number into bootstring.
+ */
+ if (is_zfs_open == 0) {
+ char temp[25]; /* needs to hold long long */
+ int alloc_size;
+ char zfs_bootstr[] = "zfs-bootfs=";
+ char zfs_bootpath[] = ",bootpath='";
+
+ sprintf(temp, "%llu", (unsigned long long)
+ current_bootfs_obj);
+ alloc_size = strlen(zfs_bootstr) +
+ strlen(current_rootpool) +
+ strlen(temp) + strlen(zfs_bootpath) +
+ strlen(current_bootpath) + 3;
+ bootstring = fsi_bootstring_alloc(ffi->ff_fsi,
+ alloc_size);
+ if (bootstring != NULL) {
+ strcpy(bootstring, zfs_bootstr);
+ strcat(bootstring, current_rootpool);
+ strcat(bootstring, "/");
+ strcat(bootstring, temp);
+ strcat(bootstring, zfs_bootpath);
+ strcat(bootstring, current_bootpath);
+ strcat(bootstring, "'");
+ is_zfs_open = 1;
+ }
+ }
+ }
+
+ if (dnode_get_path(ffi, mdn, filename, DNODE, stack)) {
+ errnum = ERR_FILE_NOT_FOUND;
+ return (0);
+ }
+
+ /* get the file size and set the file position to 0 */
+ filemax = ((znode_phys_t *)DN_BONUS(DNODE))->zp_size;
+ filepos = 0;
+
+ dnode_buf = NULL;
+ return (1);
+}
+
+/*
+ * zfs_read reads in the data blocks pointed by the DNODE.
+ *
+ * Return:
+ * len - the length successfully read in to the buffer
+ * 0 - failure
+ */
+int
+zfs_read(fsi_file_t *ffi, char *buf, int len)
+{
+ char *stack;
+ int blksz, length, movesize;
+ zfs_bootarea_t *zfs_ba = (zfs_bootarea_t *)ffi->ff_fsi->f_data;
+
+ if (file_buf == NULL) {
+ file_buf = stackbase;
+ stackbase += SPA_MAXBLOCKSIZE;
+ file_start = file_end = 0;
+ }
+ stack = stackbase;
+
+ /*
+ * If offset is in memory, move it into the buffer provided and return.
+ */
+ if (filepos >= file_start && filepos+len <= file_end) {
+ grub_memmove(buf, file_buf + filepos - file_start, len);
+ filepos += len;
+ return (len);
+ }
+
+ blksz = DNODE->dn_datablkszsec << SPA_MINBLOCKSHIFT;
+
+ /*
+ * Entire Dnode is too big to fit into the space available. We
+ * will need to read it in chunks. This could be optimized to
+ * read in as large a chunk as there is space available, but for
+ * now, this only reads in one data block at a time.
+ */
+ length = len;
+ while (length) {
+ /*
+ * Find requested blkid and the offset within that block.
+ */
+ uint64_t blkid = filepos / blksz;
+
+ if ((errnum = dmu_read(ffi, DNODE, blkid, file_buf, stack)))
+ return (0);
+
+ file_start = blkid * blksz;
+ file_end = file_start + blksz;
+
+ movesize = MIN(length, file_end - filepos);
+
+ grub_memmove(buf, file_buf + filepos - file_start,
+ movesize);
+ buf += movesize;
+ length -= movesize;
+ filepos += movesize;
+ }
+
+ return (len);
+}
+
+/*
+ * No-Op
+ */
+int
+zfs_embed(int *start_sector, int needed_sectors)
+{
+ return (1);
+}
+
+fsi_plugin_ops_t *
+fsi_init_plugin(int version, fsi_plugin_t *fp, const char **name)
+{
+ static fsig_plugin_ops_t ops = {
+ FSIMAGE_PLUGIN_VERSION,
+ .fpo_mount = zfs_mount,
+ .fpo_dir = zfs_open,
+ .fpo_read = zfs_read
+ };
+
+ *name = "zfs";
+ return (fsig_init(fp, &ops));
+}
diff --git a/tools/libfsimage/zfs/fsys_zfs.h b/tools/libfsimage/zfs/fsys_zfs.h
new file mode 100644
--- /dev/null
+++ b/tools/libfsimage/zfs/fsys_zfs.h
@@ -0,0 +1,203 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc.
+ *
+ * This program 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+/*
+ * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
+ * Use is subject to license terms.
+ */
+#ifndef _FSYS_ZFS_H
+#define _FSYS_ZFS_H
+
+#include <fsimage_grub.h>
+#include <fsimage_priv.h>
+
+#include "zfs-include/zfs.h"
+#include "zfs-include/dmu.h"
+#include "zfs-include/spa.h"
+#include "zfs-include/zio.h"
+#include "zfs-include/zio_checksum.h"
+#include "zfs-include/vdev_impl.h"
+#include "zfs-include/zap_impl.h"
+#include "zfs-include/zap_leaf.h"
+#include "zfs-include/uberblock_impl.h"
+#include "zfs-include/dnode.h"
+#include "zfs-include/dsl_dir.h"
+#include "zfs-include/zfs_acl.h"
+#include "zfs-include/zfs_znode.h"
+#include "zfs-include/dsl_dataset.h"
+#include "zfs-include/zil.h"
+#include "zfs-include/dmu_objset.h"
+
+/*
+ * Global Memory addresses to store MOS and DNODE data
+ */
+#define MOS ((dnode_phys_t *)(((zfs_bootarea_t *) \
+ (ffi->ff_fsi->f_data))->zfs_data))
+#define DNODE (MOS+1) /* move sizeof(dnode_phys_t) bytes */
+#define ZFS_SCRATCH ((char *)(DNODE+1))
+
+#define MAXNAMELEN 256
+
+typedef struct zfs_bootarea {
+ char zfs_current_bootpath[MAXNAMELEN];
+ char zfs_current_rootpool[MAXNAMELEN];
+ char zfs_current_bootfs[MAXNAMELEN];
+ uint64_t zfs_current_bootfs_obj;
+ int zfs_open;
+
+ /* cache for a file block of the currently zfs_open()-ed file */
+ void *zfs_file_buf;
+ uint64_t zfs_file_start;
+ uint64_t zfs_file_end;
+
+ /* cache for a dnode block */
+ dnode_phys_t *zfs_dnode_buf;
+ dnode_phys_t *zfs_dnode_mdn;
+ uint64_t zfs_dnode_start;
+ uint64_t zfs_dnode_end;
+
+ char *zfs_stackbase;
+ char zfs_data[0x400000];
+} zfs_bootarea_t;
+
+/*
+ * Verify dnode type.
+ * Can only be used in functions returning non-0 for failure.
+ */
+#define VERIFY_DN_TYPE(dnp, type) \
+ if (type && (dnp)->dn_type != type) { \
+ return (ERR_FSYS_CORRUPT); \
+ }
+
+/*
+ * Verify object set type.
+ * Can only be used in functions returning 0 for failure.
+ */
+#define VERIFY_OS_TYPE(osp, type) \
+ if (type && (osp)->os_type != type) { \
+ errnum = ERR_FSYS_CORRUPT; \
+ return (0); \
+ }
+
+#define ZPOOL_PROP_BOOTFS "bootfs"
+
+/* General macros */
+#define BSWAP_8(x) ((x) & 0xff)
+#define BSWAP_16(x) ((BSWAP_8(x) << 8) | BSWAP_8((x) >> 8))
+#define BSWAP_32(x) ((BSWAP_16(x) << 16) | BSWAP_16((x) >> 16))
+#define BSWAP_64(x) ((BSWAP_32(x) << 32) | BSWAP_32((x) >> 32))
+#define P2ROUNDUP(x, align) (-(-(x) & -(align)))
+
+/*
+ * XXX Match these macro up with real zfs once we have nvlist support so that
we
+ * can support large sector disks.
+ */
+#define UBERBLOCK_SIZE (1ULL << UBERBLOCK_SHIFT)
+#undef offsetof
+#define offsetof(t, m) (size_t)(&(((t *)0)->m))
+#define VDEV_UBERBLOCK_SHIFT UBERBLOCK_SHIFT
+#define VDEV_UBERBLOCK_OFFSET(n) \
+offsetof(vdev_label_t, vl_uberblock[(n) << VDEV_UBERBLOCK_SHIFT])
+
+typedef struct uberblock uberblock_t;
+
+/* XXX Uberblock_phys_t is no longer in the kernel zfs */
+typedef struct uberblock_phys {
+ uberblock_t ubp_uberblock;
+ char ubp_pad[UBERBLOCK_SIZE - sizeof (uberblock_t) -
+ sizeof (zio_block_tail_t)];
+ zio_block_tail_t ubp_zbt;
+} uberblock_phys_t;
+
+/*
+ * Macros to get fields in a bp or DVA.
+ */
+#define P2PHASE(x, align) ((x) & ((align) - 1))
+#define DVA_OFFSET_TO_PHYS_SECTOR(offset) \
+ ((offset + VDEV_LABEL_START_SIZE) >> SPA_MINBLOCKSHIFT)
+
+/*
+ * For nvlist manipulation. (from nvpair.h)
+ */
+#define NV_ENCODE_NATIVE 0
+#define NV_ENCODE_XDR 1
+#define HOST_ENDIAN 1 /* for x86 machine */
+#define DATA_TYPE_UINT64 8
+#define DATA_TYPE_STRING 9
+#define DATA_TYPE_NVLIST 19
+#define DATA_TYPE_NVLIST_ARRAY 20
+
+/*
+ * Decompression Entry - lzjb
+ */
+#ifndef NBBY
+#define NBBY 8
+#endif
+
+typedef int zfs_decomp_func_t(void *s_start, void *d_start, size_t s_len,
+ size_t d_len);
+typedef struct decomp_entry {
+ char *name;
+ zfs_decomp_func_t *decomp_func;
+} decomp_entry_t;
+
+/*
+ * FAT ZAP data structures
+ */
+#define ZFS_CRC64_POLY 0xC96C5795D7870F42ULL /* ECMA-182, reflected
form */
+#define ZAP_HASH_IDX(hash, n) (((n) == 0) ? 0 : ((hash) >> (64 -
(n))))
+#define CHAIN_END 0xffff /* end of the chunk chain */
+
+/*
+ * The amount of space within the chunk available for the array is:
+ * chunk size - space for type (1) - space for next pointer (2)
+ */
+#define ZAP_LEAF_ARRAY_BYTES (ZAP_LEAF_CHUNKSIZE - 3)
+
+#define ZAP_LEAF_HASH_SHIFT(bs) (bs - 5)
+#define ZAP_LEAF_HASH_NUMENTRIES(bs) (1 << ZAP_LEAF_HASH_SHIFT(bs))
+#define LEAF_HASH(bs, h) \
+ ((ZAP_LEAF_HASH_NUMENTRIES(bs)-1) & \
+ ((h) >> (64 - ZAP_LEAF_HASH_SHIFT(bs)-l->l_hdr.lh_prefix_len)))
+
+/*
+ * The amount of space available for chunks is:
+ * block size shift - hash entry size (2) * number of hash
+ * entries - header space (2*chunksize)
+ */
+#define ZAP_LEAF_NUMCHUNKS(bs) \
+ (((1<<bs) - 2*ZAP_LEAF_HASH_NUMENTRIES(bs)) / \
+ ZAP_LEAF_CHUNKSIZE - 2)
+
+/*
+ * The chunks start immediately after the hash table. The end of the
+ * hash table is at l_hash + HASH_NUMENTRIES, which we simply cast to a
+ * chunk_t.
+ */
+#define ZAP_LEAF_CHUNK(l, bs, idx) \
+ ((zap_leaf_chunk_t *)(l->l_hash + ZAP_LEAF_HASH_NUMENTRIES(bs)))[idx]
+#define ZAP_LEAF_ENTRY(l, bs, idx) (&ZAP_LEAF_CHUNK(l, bs, idx).l_entry)
+
+extern void fletcher_2_native(const void *, uint64_t, zio_cksum_t *);
+extern void fletcher_2_byteswap(const void *, uint64_t, zio_cksum_t *);
+extern void fletcher_4_native(const void *, uint64_t, zio_cksum_t *);
+extern void fletcher_4_byteswap(const void *, uint64_t, zio_cksum_t *);
+extern void zio_checksum_SHA256(const void *, uint64_t, zio_cksum_t *);
+extern int lzjb_decompress(void *, void *, size_t, size_t);
+
+#endif /* !_FSYS_ZFS_H */
diff --git a/tools/libfsimage/zfs/mb_info.h b/tools/libfsimage/zfs/mb_info.h
new file mode 100644
--- /dev/null
+++ b/tools/libfsimage/zfs/mb_info.h
@@ -0,0 +1,217 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2000,2003 Free Software Foundation, Inc.
+ *
+ * This program 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/*
+ * The structure type "mod_list" is used by the "multiboot_info" structure.
+ */
+
+struct mod_list
+{
+ /* the memory used goes from bytes 'mod_start' to 'mod_end-1' inclusive */
+ unsigned long mod_start;
+ unsigned long mod_end;
+
+ /* Module command line */
+ unsigned long cmdline;
+
+ /* padding to take it to 16 bytes (must be zero) */
+ unsigned long pad;
+};
+
+
+/*
+ * INT-15, AX=E820 style "AddressRangeDescriptor"
+ * ...with a "size" parameter on the front which is the structure size - 4,
+ * pointing to the next one, up until the full buffer length of the memory
+ * map has been reached.
+ */
+
+struct AddrRangeDesc
+{
+ unsigned long size;
+ unsigned long long BaseAddr;
+ unsigned long long Length;
+ unsigned long Type;
+
+ /* unspecified optional padding... */
+} __attribute__ ((packed));
+
+/* usable memory "Type", all others are reserved. */
+#define MB_ARD_MEMORY 1
+
+
+/* Drive Info structure. */
+struct drive_info
+{
+ /* The size of this structure. */
+ unsigned long size;
+
+ /* The BIOS drive number. */
+ unsigned char drive_number;
+
+ /* The access mode (see below). */
+ unsigned char drive_mode;
+
+ /* The BIOS geometry. */
+ unsigned short drive_cylinders;
+ unsigned char drive_heads;
+ unsigned char drive_sectors;
+
+ /* The array of I/O ports used for the drive. */
+ unsigned short drive_ports[0];
+};
+
+/* Drive Mode. */
+#define MB_DI_CHS_MODE 0
+#define MB_DI_LBA_MODE 1
+
+
+/* APM BIOS info. */
+struct apm_info
+{
+ unsigned short version;
+ unsigned short cseg;
+ unsigned long offset;
+ unsigned short cseg_16;
+ unsigned short dseg_16;
+ unsigned short cseg_len;
+ unsigned short cseg_16_len;
+ unsigned short dseg_16_len;
+};
+
+
+/*
+ * MultiBoot Info description
+ *
+ * This is the struct passed to the boot image. This is done by placing
+ * its address in the EAX register.
+ */
+
+struct multiboot_info
+{
+ /* MultiBoot info version number */
+ unsigned long flags;
+
+ /* Available memory from BIOS */
+ unsigned long mem_lower;
+ unsigned long mem_upper;
+
+ /* "root" partition */
+ unsigned long boot_device;
+
+ /* Kernel command line */
+ unsigned long cmdline;
+
+ /* Boot-Module list */
+ unsigned long mods_count;
+ unsigned long mods_addr;
+
+ union
+ {
+ struct
+ {
+ /* (a.out) Kernel symbol table info */
+ unsigned long tabsize;
+ unsigned long strsize;
+ unsigned long addr;
+ unsigned long pad;
+ }
+ a;
+
+ struct
+ {
+ /* (ELF) Kernel section header table */
+ unsigned long num;
+ unsigned long size;
+ unsigned long addr;
+ unsigned long shndx;
+ }
+ e;
+ }
+ syms;
+
+ /* Memory Mapping buffer */
+ unsigned long mmap_length;
+ unsigned long mmap_addr;
+
+ /* Drive Info buffer */
+ unsigned long drives_length;
+ unsigned long drives_addr;
+
+ /* ROM configuration table */
+ unsigned long config_table;
+
+ /* Boot Loader Name */
+ unsigned long boot_loader_name;
+
+ /* APM table */
+ unsigned long apm_table;
+
+ /* Video */
+ unsigned long vbe_control_info;
+ unsigned long vbe_mode_info;
+ unsigned short vbe_mode;
+ unsigned short vbe_interface_seg;
+ unsigned short vbe_interface_off;
+ unsigned short vbe_interface_len;
+};
+
+/*
+ * Flags to be set in the 'flags' parameter above
+ */
+
+/* is there basic lower/upper memory information? */
+#define MB_INFO_MEMORY 0x00000001
+/* is there a boot device set? */
+#define MB_INFO_BOOTDEV 0x00000002
+/* is the command-line defined? */
+#define MB_INFO_CMDLINE 0x00000004
+/* are there modules to do something with? */
+#define MB_INFO_MODS 0x00000008
+
+/* These next two are mutually exclusive */
+
+/* is there a symbol table loaded? */
+#define MB_INFO_AOUT_SYMS 0x00000010
+/* is there an ELF section header table? */
+#define MB_INFO_ELF_SHDR 0x00000020
+
+/* is there a full memory map? */
+#define MB_INFO_MEM_MAP 0x00000040
+
+/* Is there drive info? */
+#define MB_INFO_DRIVE_INFO 0x00000080
+
+/* Is there a config table? */
+#define MB_INFO_CONFIG_TABLE 0x00000100
+
+/* Is there a boot loader name? */
+#define MB_INFO_BOOT_LOADER_NAME 0x00000200
+
+/* Is there a APM table? */
+#define MB_INFO_APM_TABLE 0x00000400
+
+/* Is there video information? */
+#define MB_INFO_VIDEO_INFO 0x00000800
+
+/*
+ * The following value must be present in the EAX register.
+ */
+
+#define MULTIBOOT_VALID 0x2BADB002
diff --git a/tools/libfsimage/zfs/zfs-include/dmu.h
b/tools/libfsimage/zfs/zfs-include/dmu.h
new file mode 100644
--- /dev/null
+++ b/tools/libfsimage/zfs/zfs-include/dmu.h
@@ -0,0 +1,105 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc.
+ *
+ * This program 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+/*
+ * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#ifndef _SYS_DMU_H
+#define _SYS_DMU_H
+
+/*
+ * This file describes the interface that the DMU provides for its
+ * consumers.
+ *
+ * The DMU also interacts with the SPA. That interface is described in
+ * dmu_spa.h.
+ */
+typedef enum dmu_object_type {
+ DMU_OT_NONE,
+ /* general: */
+ DMU_OT_OBJECT_DIRECTORY, /* ZAP */
+ DMU_OT_OBJECT_ARRAY, /* UINT64 */
+ DMU_OT_PACKED_NVLIST, /* UINT8 (XDR by nvlist_pack/unpack) */
+ DMU_OT_PACKED_NVLIST_SIZE, /* UINT64 */
+ DMU_OT_BPLIST, /* UINT64 */
+ DMU_OT_BPLIST_HDR, /* UINT64 */
+ /* spa: */
+ DMU_OT_SPACE_MAP_HEADER, /* UINT64 */
+ DMU_OT_SPACE_MAP, /* UINT64 */
+ /* zil: */
+ DMU_OT_INTENT_LOG, /* UINT64 */
+ /* dmu: */
+ DMU_OT_DNODE, /* DNODE */
+ DMU_OT_OBJSET, /* OBJSET */
+ /* dsl: */
+ DMU_OT_DSL_DIR, /* UINT64 */
+ DMU_OT_DSL_DIR_CHILD_MAP, /* ZAP */
+ DMU_OT_DSL_DS_SNAP_MAP, /* ZAP */
+ DMU_OT_DSL_PROPS, /* ZAP */
+ DMU_OT_DSL_DATASET, /* UINT64 */
+ /* zpl: */
+ DMU_OT_ZNODE, /* ZNODE */
+ DMU_OT_ACL, /* ACL */
+ DMU_OT_PLAIN_FILE_CONTENTS, /* UINT8 */
+ DMU_OT_DIRECTORY_CONTENTS, /* ZAP */
+ DMU_OT_MASTER_NODE, /* ZAP */
+ DMU_OT_UNLINKED_SET, /* ZAP */
+ /* zvol: */
+ DMU_OT_ZVOL, /* UINT8 */
+ DMU_OT_ZVOL_PROP, /* ZAP */
+ /* other; for testing only! */
+ DMU_OT_PLAIN_OTHER, /* UINT8 */
+ DMU_OT_UINT64_OTHER, /* UINT64 */
+ DMU_OT_ZAP_OTHER, /* ZAP */
+ /* new object types: */
+ DMU_OT_ERROR_LOG, /* ZAP */
+ DMU_OT_SPA_HISTORY, /* UINT8 */
+ DMU_OT_SPA_HISTORY_OFFSETS, /* spa_his_phys_t */
+ DMU_OT_POOL_PROPS, /* ZAP */
+
+ DMU_OT_NUMTYPES
+} dmu_object_type_t;
+
+typedef enum dmu_objset_type {
+ DMU_OST_NONE,
+ DMU_OST_META,
+ DMU_OST_ZFS,
+ DMU_OST_ZVOL,
+ DMU_OST_OTHER, /* For testing only! */
+ DMU_OST_ANY, /* Be careful! */
+ DMU_OST_NUMTYPES
+} dmu_objset_type_t;
+
+/*
+ * The names of zap entries in the DIRECTORY_OBJECT of the MOS.
+ */
+#define DMU_POOL_DIRECTORY_OBJECT 1
+#define DMU_POOL_CONFIG "config"
+#define DMU_POOL_ROOT_DATASET "root_dataset"
+#define DMU_POOL_SYNC_BPLIST "sync_bplist"
+#define DMU_POOL_ERRLOG_SCRUB "errlog_scrub"
+#define DMU_POOL_ERRLOG_LAST "errlog_last"
+#define DMU_POOL_SPARES "spares"
+#define DMU_POOL_DEFLATE "deflate"
+#define DMU_POOL_HISTORY "history"
+#define DMU_POOL_PROPS "pool_props"
+#define DMU_POOL_L2CACHE "l2cache"
+
+#endif /* _SYS_DMU_H */
diff --git a/tools/libfsimage/zfs/zfs-include/dmu_objset.h
b/tools/libfsimage/zfs/zfs-include/dmu_objset.h
new file mode 100644
--- /dev/null
+++ b/tools/libfsimage/zfs/zfs-include/dmu_objset.h
@@ -0,0 +1,35 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc.
+ *
+ * This program 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+/*
+ * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#ifndef _SYS_DMU_OBJSET_H
+#define _SYS_DMU_OBJSET_H
+
+typedef struct objset_phys {
+ dnode_phys_t os_meta_dnode;
+ zil_header_t os_zil_header;
+ uint64_t os_type;
+ char os_pad[1024 - sizeof (dnode_phys_t) - sizeof (zil_header_t) -
+ sizeof (uint64_t)];
+} objset_phys_t;
+
+#endif /* _SYS_DMU_OBJSET_H */
diff --git a/tools/libfsimage/zfs/zfs-include/dnode.h
b/tools/libfsimage/zfs/zfs-include/dnode.h
new file mode 100644
--- /dev/null
+++ b/tools/libfsimage/zfs/zfs-include/dnode.h
@@ -0,0 +1,76 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc.
+ *
+ * This program 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+/*
+ * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#ifndef _SYS_DNODE_H
+#define _SYS_DNODE_H
+
+/*
+ * Fixed constants.
+ */
+#define DNODE_SHIFT 9 /* 512 bytes */
+#define DN_MIN_INDBLKSHIFT 10 /* 1k */
+#define DN_MAX_INDBLKSHIFT 14 /* 16k */
+#define DNODE_BLOCK_SHIFT 14 /* 16k */
+#define DNODE_CORE_SIZE 64 /* 64 bytes for dnode sans
blkptrs */
+#define DN_MAX_OBJECT_SHIFT 48 /* 256 trillion (zfs_fid_t
limit) */
+#define DN_MAX_OFFSET_SHIFT 64 /* 2^64 bytes in a dnode */
+
+/*
+ * Derived constants.
+ */
+#define DNODE_SIZE (1 << DNODE_SHIFT)
+#define DN_MAX_NBLKPTR ((DNODE_SIZE - DNODE_CORE_SIZE) >>
SPA_BLKPTRSHIFT)
+#define DN_MAX_BONUSLEN (DNODE_SIZE - DNODE_CORE_SIZE - (1 <<
SPA_BLKPTRSHIFT))
+#define DN_MAX_OBJECT (1ULL << DN_MAX_OBJECT_SHIFT)
+
+#define DNODES_PER_BLOCK_SHIFT (DNODE_BLOCK_SHIFT - DNODE_SHIFT)
+#define DNODES_PER_BLOCK (1ULL << DNODES_PER_BLOCK_SHIFT)
+#define DNODES_PER_LEVEL_SHIFT (DN_MAX_INDBLKSHIFT - SPA_BLKPTRSHIFT)
+
+#define DN_BONUS(dnp) ((void*)((dnp)->dn_bonus + \
+ (((dnp)->dn_nblkptr - 1) * sizeof (blkptr_t))))
+
+typedef struct dnode_phys {
+ uint8_t dn_type; /* dmu_object_type_t */
+ uint8_t dn_indblkshift; /* ln2(indirect block size) */
+ uint8_t dn_nlevels; /* 1=dn_blkptr->data blocks */
+ uint8_t dn_nblkptr; /* length of dn_blkptr */
+ uint8_t dn_bonustype; /* type of data in bonus buffer */
+ uint8_t dn_checksum; /* ZIO_CHECKSUM type */
+ uint8_t dn_compress; /* ZIO_COMPRESS type */
+ uint8_t dn_flags; /* DNODE_FLAG_* */
+ uint16_t dn_datablkszsec; /* data block size in 512b sectors */
+ uint16_t dn_bonuslen; /* length of dn_bonus */
+ uint8_t dn_pad2[4];
+
+ /* accounting is protected by dn_dirty_mtx */
+ uint64_t dn_maxblkid; /* largest allocated block ID */
+ uint64_t dn_used; /* bytes (or sectors) of disk space */
+
+ uint64_t dn_pad3[4];
+
+ blkptr_t dn_blkptr[1];
+ uint8_t dn_bonus[DN_MAX_BONUSLEN];
+} dnode_phys_t;
+
+#endif /* _SYS_DNODE_H */
diff --git a/tools/libfsimage/zfs/zfs-include/dsl_dataset.h
b/tools/libfsimage/zfs/zfs-include/dsl_dataset.h
new file mode 100644
--- /dev/null
+++ b/tools/libfsimage/zfs/zfs-include/dsl_dataset.h
@@ -0,0 +1,53 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc.
+ *
+ * This program 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+/*
+ * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#ifndef _SYS_DSL_DATASET_H
+#define _SYS_DSL_DATASET_H
+
+typedef struct dsl_dataset_phys {
+ uint64_t ds_dir_obj;
+ uint64_t ds_prev_snap_obj;
+ uint64_t ds_prev_snap_txg;
+ uint64_t ds_next_snap_obj;
+ uint64_t ds_snapnames_zapobj; /* zap obj of snaps; ==0 for snaps */
+ uint64_t ds_num_children; /* clone/snap children; ==0 for head */
+ uint64_t ds_creation_time; /* seconds since 1970 */
+ uint64_t ds_creation_txg;
+ uint64_t ds_deadlist_obj;
+ uint64_t ds_used_bytes;
+ uint64_t ds_compressed_bytes;
+ uint64_t ds_uncompressed_bytes;
+ uint64_t ds_unique_bytes; /* only relevant to snapshots */
+ /*
+ * The ds_fsid_guid is a 56-bit ID that can change to avoid
+ * collisions. The ds_guid is a 64-bit ID that will never
+ * change, so there is a small probability that it will collide.
+ */
+ uint64_t ds_fsid_guid;
+ uint64_t ds_guid;
+ uint64_t ds_flags;
+ blkptr_t ds_bp;
+ uint64_t ds_pad[8]; /* pad out to 320 bytes for good measure */
+} dsl_dataset_phys_t;
+
+#endif /* _SYS_DSL_DATASET_H */
diff --git a/tools/libfsimage/zfs/zfs-include/dsl_dir.h
b/tools/libfsimage/zfs/zfs-include/dsl_dir.h
new file mode 100644
--- /dev/null
+++ b/tools/libfsimage/zfs/zfs-include/dsl_dir.h
@@ -0,0 +1,49 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc.
+ *
+ * This program 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+/*
+ * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#ifndef _SYS_DSL_DIR_H
+#define _SYS_DSL_DIR_H
+
+typedef struct dsl_dir_phys {
+ uint64_t dd_creation_time; /* not actually used */
+ uint64_t dd_head_dataset_obj;
+ uint64_t dd_parent_obj;
+ uint64_t dd_clone_parent_obj;
+ uint64_t dd_child_dir_zapobj;
+ /*
+ * how much space our children are accounting for; for leaf
+ * datasets, == physical space used by fs + snaps
+ */
+ uint64_t dd_used_bytes;
+ uint64_t dd_compressed_bytes;
+ uint64_t dd_uncompressed_bytes;
+ /* Administrative quota setting */
+ uint64_t dd_quota;
+ /* Administrative reservation setting */
+ uint64_t dd_reserved;
+ uint64_t dd_props_zapobj;
+ uint64_t dd_deleg_zapobj; /* dataset permissions */
+ uint64_t dd_pad[20]; /* pad out to 256 bytes for good measure */
+} dsl_dir_phys_t;
+
+#endif /* _SYS_DSL_DIR_H */
diff --git a/tools/libfsimage/zfs/zfs-include/spa.h
b/tools/libfsimage/zfs/zfs-include/spa.h
new file mode 100644
--- /dev/null
+++ b/tools/libfsimage/zfs/zfs-include/spa.h
@@ -0,0 +1,283 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc.
+ *
+ * This program 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+/*
+ * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#ifndef _SYS_SPA_H
+#define _SYS_SPA_H
+
+/*
+ * General-purpose 32-bit and 64-bit bitfield encodings.
+ */
+#define BF32_DECODE(x, low, len) P2PHASE((x) >> (low), 1U <<
(len))
+#define BF64_DECODE(x, low, len) P2PHASE((x) >> (low), 1ULL <<
(len))
+#define BF32_ENCODE(x, low, len) (P2PHASE((x), 1U << (len)) <<
(low))
+#define BF64_ENCODE(x, low, len) (P2PHASE((x), 1ULL << (len)) <<
(low))
+
+#define BF32_GET(x, low, len) BF32_DECODE(x, low, len)
+#define BF64_GET(x, low, len) BF64_DECODE(x, low, len)
+
+#define BF32_SET(x, low, len, val) \
+ ((x) ^= BF32_ENCODE((x >> low) ^ (val), low, len))
+#define BF64_SET(x, low, len, val) \
+ ((x) ^= BF64_ENCODE((x >> low) ^ (val), low, len))
+
+#define BF32_GET_SB(x, low, len, shift, bias) \
+ ((BF32_GET(x, low, len) + (bias)) << (shift))
+#define BF64_GET_SB(x, low, len, shift, bias) \
+ ((BF64_GET(x, low, len) + (bias)) << (shift))
+
+#define BF32_SET_SB(x, low, len, shift, bias, val) \
+ BF32_SET(x, low, len, ((val) >> (shift)) - (bias))
+#define BF64_SET_SB(x, low, len, shift, bias, val) \
+ BF64_SET(x, low, len, ((val) >> (shift)) - (bias))
+
+/*
+ * We currently support nine block sizes, from 512 bytes to 128K.
+ * We could go higher, but the benefits are near-zero and the cost
+ * of COWing a giant block to modify one byte would become excessive.
+ */
+#define SPA_MINBLOCKSHIFT 9
+#define SPA_MAXBLOCKSHIFT 17
+#define SPA_MINBLOCKSIZE (1ULL << SPA_MINBLOCKSHIFT)
+#define SPA_MAXBLOCKSIZE (1ULL << SPA_MAXBLOCKSHIFT)
+
+#define SPA_BLOCKSIZES (SPA_MAXBLOCKSHIFT - SPA_MINBLOCKSHIFT
+ 1)
+
+/*
+ * The DVA size encodings for LSIZE and PSIZE support blocks up to 32MB.
+ * The ASIZE encoding should be at least 64 times larger (6 more bits)
+ * to support up to 4-way RAID-Z mirror mode with worst-case gang block
+ * overhead, three DVAs per bp, plus one more bit in case we do anything
+ * else that expands the ASIZE.
+ */
+#define SPA_LSIZEBITS 16 /* LSIZE up to 32M (2^16 * 512)
*/
+#define SPA_PSIZEBITS 16 /* PSIZE up to 32M (2^16 * 512)
*/
+#define SPA_ASIZEBITS 24 /* ASIZE up to 64 times larger
*/
+
+/*
+ * All SPA data is represented by 128-bit data virtual addresses (DVAs).
+ * The members of the dva_t should be considered opaque outside the SPA.
+ */
+typedef struct dva {
+ uint64_t dva_word[2];
+} dva_t;
+
+/*
+ * Each block has a 256-bit checksum -- strong enough for cryptographic hashes.
+ */
+typedef struct zio_cksum {
+ uint64_t zc_word[4];
+} zio_cksum_t;
+
+/*
+ * Each block is described by its DVAs, time of birth, checksum, etc.
+ * The word-by-word, bit-by-bit layout of the blkptr is as follows:
+ *
+ * 64 56 48 40 32 24 16 8 0
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ * 0 | vdev1 | GRID | ASIZE |
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ * 1 |G| offset1 |
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ * 2 | vdev2 | GRID | ASIZE |
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ * 3 |G| offset2 |
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ * 4 | vdev3 | GRID | ASIZE |
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ * 5 |G| offset3 |
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ * 6 |E| lvl | type | cksum | comp | PSIZE | LSIZE |
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ * 7 | padding |
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ * 8 | padding |
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ * 9 | padding |
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ * a | birth txg |
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ * b | fill count |
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ * c | checksum[0] |
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ * d | checksum[1] |
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ * e | checksum[2] |
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ * f | checksum[3] |
+ * +-------+-------+-------+-------+-------+-------+-------+-------+
+ *
+ * Legend:
+ *
+ * vdev virtual device ID
+ * offset offset into virtual device
+ * LSIZE logical size
+ * PSIZE physical size (after compression)
+ * ASIZE allocated size (including RAID-Z parity and gang block headers)
+ * GRID RAID-Z layout information (reserved for future use)
+ * cksum checksum function
+ * comp compression function
+ * G gang block indicator
+ * E endianness
+ * type DMU object type
+ * lvl level of indirection
+ * birth txg transaction group in which the block was born
+ * fill count number of non-zero blocks under this bp
+ * checksum[4] 256-bit checksum of the data this bp describes
+ */
+typedef struct blkptr {
+ dva_t blk_dva[3]; /* 128-bit Data Virtual Address */
+ uint64_t blk_prop; /* size, compression, type, etc */
+ uint64_t blk_pad[3]; /* Extra space for the future */
+ uint64_t blk_birth; /* transaction group at birth */
+ uint64_t blk_fill; /* fill count */
+ zio_cksum_t blk_cksum; /* 256-bit checksum */
+} blkptr_t;
+
+#define SPA_BLKPTRSHIFT 7 /* blkptr_t is 128 bytes
*/
+#define SPA_DVAS_PER_BP 3 /* Number of DVAs in a bp
*/
+
+/*
+ * Macros to get and set fields in a bp or DVA.
+ */
+#define DVA_GET_ASIZE(dva) \
+ BF64_GET_SB((dva)->dva_word[0], 0, 24, SPA_MINBLOCKSHIFT, 0)
+#define DVA_SET_ASIZE(dva, x) \
+ BF64_SET_SB((dva)->dva_word[0], 0, 24, SPA_MINBLOCKSHIFT, 0, x)
+
+#define DVA_GET_GRID(dva) BF64_GET((dva)->dva_word[0], 24, 8)
+#define DVA_SET_GRID(dva, x) BF64_SET((dva)->dva_word[0], 24, 8, x)
+
+#define DVA_GET_VDEV(dva) BF64_GET((dva)->dva_word[0], 32, 32)
+#define DVA_SET_VDEV(dva, x) BF64_SET((dva)->dva_word[0], 32, 32, x)
+
+#define DVA_GET_OFFSET(dva) \
+ BF64_GET_SB((dva)->dva_word[1], 0, 63, SPA_MINBLOCKSHIFT, 0)
+#define DVA_SET_OFFSET(dva, x) \
+ BF64_SET_SB((dva)->dva_word[1], 0, 63, SPA_MINBLOCKSHIFT, 0, x)
+
+#define DVA_GET_GANG(dva) BF64_GET((dva)->dva_word[1], 63, 1)
+#define DVA_SET_GANG(dva, x) BF64_SET((dva)->dva_word[1], 63, 1, x)
+
+#define BP_GET_LSIZE(bp) \
+ (BP_IS_HOLE(bp) ? 0 : \
+ BF64_GET_SB((bp)->blk_prop, 0, 16, SPA_MINBLOCKSHIFT, 1))
+#define BP_SET_LSIZE(bp, x) \
+ BF64_SET_SB((bp)->blk_prop, 0, 16, SPA_MINBLOCKSHIFT, 1, x)
+
+#define BP_GET_PSIZE(bp) \
+ BF64_GET_SB((bp)->blk_prop, 16, 16, SPA_MINBLOCKSHIFT, 1)
+#define BP_SET_PSIZE(bp, x) \
+ BF64_SET_SB((bp)->blk_prop, 16, 16, SPA_MINBLOCKSHIFT, 1, x)
+
+#define BP_GET_COMPRESS(bp) BF64_GET((bp)->blk_prop, 32, 8)
+#define BP_SET_COMPRESS(bp, x) BF64_SET((bp)->blk_prop, 32, 8, x)
+
+#define BP_GET_CHECKSUM(bp) BF64_GET((bp)->blk_prop, 40, 8)
+#define BP_SET_CHECKSUM(bp, x) BF64_SET((bp)->blk_prop, 40, 8, x)
+
+#define BP_GET_TYPE(bp) BF64_GET((bp)->blk_prop, 48, 8)
+#define BP_SET_TYPE(bp, x) BF64_SET((bp)->blk_prop, 48, 8, x)
+
+#define BP_GET_LEVEL(bp) BF64_GET((bp)->blk_prop, 56, 5)
+#define BP_SET_LEVEL(bp, x) BF64_SET((bp)->blk_prop, 56, 5, x)
+
+#define BP_GET_BYTEORDER(bp) (0 - BF64_GET((bp)->blk_prop, 63, 1))
+#define BP_SET_BYTEORDER(bp, x) BF64_SET((bp)->blk_prop, 63, 1, x)
+
+#define BP_GET_ASIZE(bp) \
+ (DVA_GET_ASIZE(&(bp)->blk_dva[0]) + DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \
+ DVA_GET_ASIZE(&(bp)->blk_dva[2]))
+
+#define BP_GET_UCSIZE(bp) \
+ ((BP_GET_LEVEL(bp) > 0 || dmu_ot[BP_GET_TYPE(bp)].ot_metadata) ? \
+ BP_GET_PSIZE(bp) : BP_GET_LSIZE(bp));
+
+#define BP_GET_NDVAS(bp) \
+ (!!DVA_GET_ASIZE(&(bp)->blk_dva[0]) + \
+ !!DVA_GET_ASIZE(&(bp)->blk_dva[1]) + \
+ !!DVA_GET_ASIZE(&(bp)->blk_dva[2]))
+
+#define BP_COUNT_GANG(bp) \
+ (DVA_GET_GANG(&(bp)->blk_dva[0]) + \
+ DVA_GET_GANG(&(bp)->blk_dva[1]) + \
+ DVA_GET_GANG(&(bp)->blk_dva[2]))
+
+#define DVA_EQUAL(dva1, dva2) \
+ ((dva1)->dva_word[1] == (dva2)->dva_word[1] && \
+ (dva1)->dva_word[0] == (dva2)->dva_word[0])
+
+#define ZIO_CHECKSUM_EQUAL(zc1, zc2) \
+ (0 == (((zc1).zc_word[0] - (zc2).zc_word[0]) | \
+ ((zc1).zc_word[1] - (zc2).zc_word[1]) | \
+ ((zc1).zc_word[2] - (zc2).zc_word[2]) | \
+ ((zc1).zc_word[3] - (zc2).zc_word[3])))
+
+
+#define DVA_IS_VALID(dva) (DVA_GET_ASIZE(dva) != 0)
+
+#define ZIO_SET_CHECKSUM(zcp, w0, w1, w2, w3) \
+{ \
+ (zcp)->zc_word[0] = w0; \
+ (zcp)->zc_word[1] = w1; \
+ (zcp)->zc_word[2] = w2; \
+ (zcp)->zc_word[3] = w3; \
+}
+
+#define BP_IDENTITY(bp) (&(bp)->blk_dva[0])
+#define BP_IS_GANG(bp) DVA_GET_GANG(BP_IDENTITY(bp))
+#define BP_IS_HOLE(bp) ((bp)->blk_birth == 0)
+#define BP_IS_OLDER(bp, txg) (!BP_IS_HOLE(bp) && (bp)->blk_birth <
(txg))
+
+#define BP_ZERO(bp) \
+{ \
+ (bp)->blk_dva[0].dva_word[0] = 0; \
+ (bp)->blk_dva[0].dva_word[1] = 0; \
+ (bp)->blk_dva[1].dva_word[0] = 0; \
+ (bp)->blk_dva[1].dva_word[1] = 0; \
+ (bp)->blk_dva[2].dva_word[0] = 0; \
+ (bp)->blk_dva[2].dva_word[1] = 0; \
+ (bp)->blk_prop = 0; \
+ (bp)->blk_pad[0] = 0; \
+ (bp)->blk_pad[1] = 0; \
+ (bp)->blk_pad[2] = 0; \
+ (bp)->blk_birth = 0; \
+ (bp)->blk_fill = 0; \
+ ZIO_SET_CHECKSUM(&(bp)->blk_cksum, 0, 0, 0, 0); \
+}
+
+/*
+ * Note: the byteorder is either 0 or -1, both of which are palindromes.
+ * This simplifies the endianness handling a bit.
+ */
+#ifdef _BIG_ENDIAN
+#define ZFS_HOST_BYTEORDER (0ULL)
+#else
+#define ZFS_HOST_BYTEORDER (-1ULL)
+#endif
+
+#define BP_SHOULD_BYTESWAP(bp) (BP_GET_BYTEORDER(bp) !=
ZFS_HOST_BYTEORDER)
+
+#define BP_SPRINTF_LEN 320
+
+#endif /* _SYS_SPA_H */
diff --git a/tools/libfsimage/zfs/zfs-include/uberblock_impl.h
b/tools/libfsimage/zfs/zfs-include/uberblock_impl.h
new file mode 100644
--- /dev/null
+++ b/tools/libfsimage/zfs/zfs-include/uberblock_impl.h
@@ -0,0 +1,49 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc.
+ *
+ * This program 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+/*
+ * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#ifndef _SYS_UBERBLOCK_IMPL_H
+#define _SYS_UBERBLOCK_IMPL_H
+
+/*
+ * The uberblock version is incremented whenever an incompatible on-disk
+ * format change is made to the SPA, DMU, or ZAP.
+ *
+ * Note: the first two fields should never be moved. When a storage pool
+ * is opened, the uberblock must be read off the disk before the version
+ * can be checked. If the ub_version field is moved, we may not detect
+ * version mismatch. If the ub_magic field is moved, applications that
+ * expect the magic number in the first word won't work.
+ */
+#define UBERBLOCK_MAGIC 0x00bab10c /* oo-ba-bloc!
*/
+#define UBERBLOCK_SHIFT 10 /* up to 1K
*/
+
+struct uberblock {
+ uint64_t ub_magic; /* UBERBLOCK_MAGIC */
+ uint64_t ub_version; /* ZFS_VERSION */
+ uint64_t ub_txg; /* txg of last sync */
+ uint64_t ub_guid_sum; /* sum of all vdev guids */
+ uint64_t ub_timestamp; /* UTC time of last sync */
+ blkptr_t ub_rootbp; /* MOS objset_phys_t */
+};
+
+#endif /* _SYS_UBERBLOCK_IMPL_H */
diff --git a/tools/libfsimage/zfs/zfs-include/vdev_impl.h
b/tools/libfsimage/zfs/zfs-include/vdev_impl.h
new file mode 100644
--- /dev/null
+++ b/tools/libfsimage/zfs/zfs-include/vdev_impl.h
@@ -0,0 +1,70 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc.
+ *
+ * This program 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+/*
+ * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#ifndef _SYS_VDEV_IMPL_H
+#define _SYS_VDEV_IMPL_H
+
+#define VDEV_SKIP_SIZE (8 << 10)
+#define VDEV_BOOT_HEADER_SIZE (8 << 10)
+#define VDEV_PHYS_SIZE (112 << 10)
+#define VDEV_UBERBLOCK_RING (128 << 10)
+
+/* ZFS boot block */
+#define VDEV_BOOT_MAGIC 0x2f5b007b10cULL
+#define VDEV_BOOT_VERSION 1 /* version number
*/
+
+typedef struct vdev_boot_header {
+ uint64_t vb_magic; /* VDEV_BOOT_MAGIC */
+ uint64_t vb_version; /* VDEV_BOOT_VERSION */
+ uint64_t vb_offset; /* start offset (bytes) */
+ uint64_t vb_size; /* size (bytes) */
+ char vb_pad[VDEV_BOOT_HEADER_SIZE - 4 * sizeof (uint64_t)];
+} vdev_boot_header_t;
+
+typedef struct vdev_phys {
+ char vp_nvlist[VDEV_PHYS_SIZE - sizeof (zio_block_tail_t)];
+ zio_block_tail_t vp_zbt;
+} vdev_phys_t;
+
+typedef struct vdev_label {
+ char vl_pad[VDEV_SKIP_SIZE]; /* 8K */
+ vdev_boot_header_t vl_boot_header; /* 8K */
+ vdev_phys_t vl_vdev_phys; /* 112K */
+ char vl_uberblock[VDEV_UBERBLOCK_RING]; /* 128K */
+} vdev_label_t; /* 256K
total */
+
+/*
+ * Size and offset of embedded boot loader region on each label.
+ * The total size of the first two labels plus the boot area is 4MB.
+ */
+#define VDEV_BOOT_OFFSET (2 * sizeof (vdev_label_t))
+#define VDEV_BOOT_SIZE (7ULL << 19) /* 3.5M
*/
+
+/*
+ * Size of label regions at the start and end of each leaf device.
+ */
+#define VDEV_LABEL_START_SIZE (2 * sizeof (vdev_label_t) +
VDEV_BOOT_SIZE)
+#define VDEV_LABEL_END_SIZE (2 * sizeof (vdev_label_t))
+#define VDEV_LABELS 4
+
+#endif /* _SYS_VDEV_IMPL_H */
diff --git a/tools/libfsimage/zfs/zfs-include/zap_impl.h
b/tools/libfsimage/zfs/zfs-include/zap_impl.h
new file mode 100644
--- /dev/null
+++ b/tools/libfsimage/zfs/zfs-include/zap_impl.h
@@ -0,0 +1,110 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc.
+ *
+ * This program 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+/*
+ * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#ifndef _SYS_ZAP_IMPL_H
+#define _SYS_ZAP_IMPL_H
+
+#define ZAP_MAGIC 0x2F52AB2ABULL
+
+#define ZAP_HASHBITS 28
+#define MZAP_ENT_LEN 64
+#define MZAP_NAME_LEN (MZAP_ENT_LEN - 8 - 4 - 2)
+#define MZAP_MAX_BLKSHIFT SPA_MAXBLOCKSHIFT
+#define MZAP_MAX_BLKSZ (1 << MZAP_MAX_BLKSHIFT)
+
+typedef struct mzap_ent_phys {
+ uint64_t mze_value;
+ uint32_t mze_cd;
+ uint16_t mze_pad; /* in case we want to chain them someday */
+ char mze_name[MZAP_NAME_LEN];
+} mzap_ent_phys_t;
+
+typedef struct mzap_phys {
+ uint64_t mz_block_type; /* ZBT_MICRO */
+ uint64_t mz_salt;
+ uint64_t mz_pad[6];
+ mzap_ent_phys_t mz_chunk[1];
+ /* actually variable size depending on block size */
+} mzap_phys_t;
+
+/*
+ * The (fat) zap is stored in one object. It is an array of
+ * 1<<FZAP_BLOCK_SHIFT byte blocks. The layout looks like one of:
+ *
+ * ptrtbl fits in first block:
+ * [zap_phys_t zap_ptrtbl_shift < 6] [zap_leaf_t] ...
+ *
+ * ptrtbl too big for first block:
+ * [zap_phys_t zap_ptrtbl_shift >= 6] [zap_leaf_t] [ptrtbl] ...
+ *
+ */
+
+#define ZBT_LEAF ((1ULL << 63) + 0)
+#define ZBT_HEADER ((1ULL << 63) + 1)
+#define ZBT_MICRO ((1ULL << 63) + 3)
+/* any other values are ptrtbl blocks */
+
+/*
+ * the embedded pointer table takes up half a block:
+ * block size / entry size (2^3) / 2
+ */
+#define ZAP_EMBEDDED_PTRTBL_SHIFT(zap) (FZAP_BLOCK_SHIFT(zap) - 3 - 1)
+
+/*
+ * The embedded pointer table starts half-way through the block. Since
+ * the pointer table itself is half the block, it starts at (64-bit)
+ * word number (1<<ZAP_EMBEDDED_PTRTBL_SHIFT(zap)).
+ */
+#define ZAP_EMBEDDED_PTRTBL_ENT(zap, idx) \
+ ((uint64_t *)(zap)->zap_f.zap_phys) \
+ [(idx) + (1<<ZAP_EMBEDDED_PTRTBL_SHIFT(zap))]
+
+/*
+ * TAKE NOTE:
+ * If zap_phys_t is modified, zap_byteswap() must be modified.
+ */
+typedef struct zap_phys {
+ uint64_t zap_block_type; /* ZBT_HEADER */
+ uint64_t zap_magic; /* ZAP_MAGIC */
+
+ struct zap_table_phys {
+ uint64_t zt_blk; /* starting block number */
+ uint64_t zt_numblks; /* number of blocks */
+ uint64_t zt_shift; /* bits to index it */
+ uint64_t zt_nextblk; /* next (larger) copy start block */
+ uint64_t zt_blks_copied; /* number source blocks copied */
+ } zap_ptrtbl;
+
+ uint64_t zap_freeblk; /* the next free block */
+ uint64_t zap_num_leafs; /* number of leafs */
+ uint64_t zap_num_entries; /* number of entries */
+ uint64_t zap_salt; /* salt to stir into hash function */
+ /*
+ * This structure is followed by padding, and then the embedded
+ * pointer table. The embedded pointer table takes up second
+ * half of the block. It is accessed using the
+ * ZAP_EMBEDDED_PTRTBL_ENT() macro.
+ */
+} zap_phys_t;
+
+#endif /* _SYS_ZAP_IMPL_H */
diff --git a/tools/libfsimage/zfs/zfs-include/zap_leaf.h
b/tools/libfsimage/zfs/zfs-include/zap_leaf.h
new file mode 100644
--- /dev/null
+++ b/tools/libfsimage/zfs/zfs-include/zap_leaf.h
@@ -0,0 +1,100 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc.
+ *
+ * This program 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+/*
+ * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#ifndef _SYS_ZAP_LEAF_H
+#define _SYS_ZAP_LEAF_H
+
+#define ZAP_LEAF_MAGIC 0x2AB1EAF
+
+/* chunk size = 24 bytes */
+#define ZAP_LEAF_CHUNKSIZE 24
+
+/*
+ * The amount of space within the chunk available for the array is:
+ * chunk size - space for type (1) - space for next pointer (2)
+ */
+#define ZAP_LEAF_ARRAY_BYTES (ZAP_LEAF_CHUNKSIZE - 3)
+
+typedef enum zap_chunk_type {
+ ZAP_CHUNK_FREE = 253,
+ ZAP_CHUNK_ENTRY = 252,
+ ZAP_CHUNK_ARRAY = 251,
+ ZAP_CHUNK_TYPE_MAX = 250
+} zap_chunk_type_t;
+
+/*
+ * TAKE NOTE:
+ * If zap_leaf_phys_t is modified, zap_leaf_byteswap() must be modified.
+ */
+typedef struct zap_leaf_phys {
+ struct zap_leaf_header {
+ uint64_t lh_block_type; /* ZBT_LEAF */
+ uint64_t lh_pad1;
+ uint64_t lh_prefix; /* hash prefix of this leaf */
+ uint32_t lh_magic; /* ZAP_LEAF_MAGIC */
+ uint16_t lh_nfree; /* number free chunks */
+ uint16_t lh_nentries; /* number of entries */
+ uint16_t lh_prefix_len; /* num bits used to id this */
+
+/* above is accessable to zap, below is zap_leaf private */
+
+ uint16_t lh_freelist; /* chunk head of free list */
+ uint8_t lh_pad2[12];
+ } l_hdr; /* 2 24-byte chunks */
+
+ /*
+ * The header is followed by a hash table with
+ * ZAP_LEAF_HASH_NUMENTRIES(zap) entries. The hash table is
+ * followed by an array of ZAP_LEAF_NUMCHUNKS(zap)
+ * zap_leaf_chunk structures. These structures are accessed
+ * with the ZAP_LEAF_CHUNK() macro.
+ */
+
+ uint16_t l_hash[1];
+} zap_leaf_phys_t;
+
+typedef union zap_leaf_chunk {
+ struct zap_leaf_entry {
+ uint8_t le_type; /* always ZAP_CHUNK_ENTRY */
+ uint8_t le_int_size; /* size of ints */
+ uint16_t le_next; /* next entry in hash chain */
+ uint16_t le_name_chunk; /* first chunk of the name */
+ uint16_t le_name_length; /* bytes in name, incl null */
+ uint16_t le_value_chunk; /* first chunk of the value */
+ uint16_t le_value_length; /* value length in ints */
+ uint32_t le_cd; /* collision differentiator */
+ uint64_t le_hash; /* hash value of the name */
+ } l_entry;
+ struct zap_leaf_array {
+ uint8_t la_type; /* always ZAP_CHUNK_ARRAY */
+ uint8_t la_array[ZAP_LEAF_ARRAY_BYTES];
+ uint16_t la_next; /* next blk or CHAIN_END */
+ } l_array;
+ struct zap_leaf_free {
+ uint8_t lf_type; /* always ZAP_CHUNK_FREE */
+ uint8_t lf_pad[ZAP_LEAF_ARRAY_BYTES];
+ uint16_t lf_next; /* next in free list, or CHAIN_END */
+ } l_free;
+} zap_leaf_chunk_t;
+
+#endif /* _SYS_ZAP_LEAF_H */
diff --git a/tools/libfsimage/zfs/zfs-include/zfs.h
b/tools/libfsimage/zfs/zfs-include/zfs.h
new file mode 100644
--- /dev/null
+++ b/tools/libfsimage/zfs/zfs-include/zfs.h
@@ -0,0 +1,112 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc.
+ *
+ * This program 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+/*
+ * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#ifndef _SYS_FS_ZFS_H
+#define _SYS_FS_ZFS_H
+
+
+/*
+ * On-disk version number.
+ */
+#define SPA_VERSION_1 1ULL
+#define SPA_VERSION_2 2ULL
+#define SPA_VERSION_3 3ULL
+#define SPA_VERSION_4 4ULL
+#define SPA_VERSION_5 5ULL
+#define SPA_VERSION_6 6ULL
+#define SPA_VERSION_7 7ULL
+#define SPA_VERSION_8 8ULL
+#define SPA_VERSION_9 9ULL
+#define SPA_VERSION_10 10ULL
+#define SPA_VERSION SPA_VERSION_10
+
+/*
+ * The following are configuration names used in the nvlist describing a pool's
+ * configuration.
+ */
+#define ZPOOL_CONFIG_VERSION "version"
+#define ZPOOL_CONFIG_POOL_NAME "name"
+#define ZPOOL_CONFIG_POOL_STATE "state"
+#define ZPOOL_CONFIG_POOL_TXG "txg"
+#define ZPOOL_CONFIG_POOL_GUID "pool_guid"
+#define ZPOOL_CONFIG_CREATE_TXG "create_txg"
+#define ZPOOL_CONFIG_TOP_GUID "top_guid"
+#define ZPOOL_CONFIG_VDEV_TREE "vdev_tree"
+#define ZPOOL_CONFIG_TYPE "type"
+#define ZPOOL_CONFIG_CHILDREN "children"
+#define ZPOOL_CONFIG_ID "id"
+#define ZPOOL_CONFIG_GUID "guid"
+#define ZPOOL_CONFIG_PATH "path"
+#define ZPOOL_CONFIG_DEVID "devid"
+#define ZPOOL_CONFIG_METASLAB_ARRAY "metaslab_array"
+#define ZPOOL_CONFIG_METASLAB_SHIFT "metaslab_shift"
+#define ZPOOL_CONFIG_ASHIFT "ashift"
+#define ZPOOL_CONFIG_ASIZE "asize"
+#define ZPOOL_CONFIG_DTL "DTL"
+#define ZPOOL_CONFIG_STATS "stats"
+#define ZPOOL_CONFIG_WHOLE_DISK "whole_disk"
+#define ZPOOL_CONFIG_ERRCOUNT "error_count"
+#define ZPOOL_CONFIG_NOT_PRESENT "not_present"
+#define ZPOOL_CONFIG_SPARES "spares"
+#define ZPOOL_CONFIG_IS_SPARE "is_spare"
+#define ZPOOL_CONFIG_NPARITY "nparity"
+#define ZPOOL_CONFIG_PHYS_PATH "phys_path"
+#define ZPOOL_CONFIG_L2CACHE "l2cache"
+/*
+ * The persistent vdev state is stored as separate values rather than a single
+ * 'vdev_state' entry. This is because a device can be in multiple states,
such
+ * as offline and degraded.
+ */
+#define ZPOOL_CONFIG_OFFLINE "offline"
+#define ZPOOL_CONFIG_FAULTED "faulted"
+#define ZPOOL_CONFIG_DEGRADED "degraded"
+#define ZPOOL_CONFIG_REMOVED "removed"
+
+#define VDEV_TYPE_ROOT "root"
+#define VDEV_TYPE_MIRROR "mirror"
+#define VDEV_TYPE_REPLACING "replacing"
+#define VDEV_TYPE_RAIDZ "raidz"
+#define VDEV_TYPE_DISK "disk"
+#define VDEV_TYPE_FILE "file"
+#define VDEV_TYPE_MISSING "missing"
+#define VDEV_TYPE_SPARE "spare"
+#define VDEV_TYPE_L2CACHE "l2cache"
+
+/*
+ * pool state. The following states are written to disk as part of the normal
+ * SPA lifecycle: ACTIVE, EXPORTED, DESTROYED, SPARE, L2CACHE. The remaining
+ * states are software abstractions used at various levels to communicate pool
+ * state.
+ */
+typedef enum pool_state {
+ POOL_STATE_ACTIVE = 0, /* In active use */
+ POOL_STATE_EXPORTED, /* Explicitly exported */
+ POOL_STATE_DESTROYED, /* Explicitly destroyed */
+ POOL_STATE_SPARE, /* Reserved for hot spare use */
+ POOL_STATE_L2CACHE, /* Level 2 ARC device */
+ POOL_STATE_UNINITIALIZED, /* Internal spa_t state */
+ POOL_STATE_UNAVAIL, /* Internal libzfs state */
+ POOL_STATE_POTENTIALLY_ACTIVE /* Internal libzfs state */
+} pool_state_t;
+
+#endif /* _SYS_FS_ZFS_H */
diff --git a/tools/libfsimage/zfs/zfs-include/zfs_acl.h
b/tools/libfsimage/zfs/zfs-include/zfs_acl.h
new file mode 100644
--- /dev/null
+++ b/tools/libfsimage/zfs/zfs-include/zfs_acl.h
@@ -0,0 +1,60 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc.
+ *
+ * This program 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+/*
+ * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#ifndef _SYS_FS_ZFS_ACL_H
+#define _SYS_FS_ZFS_ACL_H
+
+#ifndef _UID_T
+#define _UID_T
+typedef unsigned int uid_t; /* UID type */
+#endif /* _UID_T */
+
+typedef struct zfs_oldace {
+ uint32_t z_fuid; /* "who" */
+ uint32_t z_access_mask; /* access mask */
+ uint16_t z_flags; /* flags, i.e inheritance */
+ uint16_t z_type; /* type of entry allow/deny */
+} zfs_oldace_t;
+
+#define ACE_SLOT_CNT 6
+
+typedef struct zfs_znode_acl_v0 {
+ uint64_t z_acl_extern_obj; /* ext acl pieces */
+ uint32_t z_acl_count; /* Number of ACEs */
+ uint16_t z_acl_version; /* acl version */
+ uint16_t z_acl_pad; /* pad */
+ zfs_oldace_t z_ace_data[ACE_SLOT_CNT]; /* 6 standard ACEs */
+} zfs_znode_acl_v0_t;
+
+#define ZFS_ACE_SPACE (sizeof (zfs_oldace_t) * ACE_SLOT_CNT)
+
+typedef struct zfs_znode_acl {
+ uint64_t z_acl_extern_obj; /* ext acl pieces */
+ uint32_t z_acl_size; /* Number of bytes in ACL */
+ uint16_t z_acl_version; /* acl version */
+ uint16_t z_acl_count; /* ace count */
+ uint8_t z_ace_data[ZFS_ACE_SPACE]; /* space for embedded ACEs */
+} zfs_znode_acl_t;
+
+
+#endif /* _SYS_FS_ZFS_ACL_H */
diff --git a/tools/libfsimage/zfs/zfs-include/zfs_znode.h
b/tools/libfsimage/zfs/zfs-include/zfs_znode.h
new file mode 100644
--- /dev/null
+++ b/tools/libfsimage/zfs/zfs-include/zfs_znode.h
@@ -0,0 +1,68 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc.
+ *
+ * This program 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+/*
+ * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#ifndef _SYS_FS_ZFS_ZNODE_H
+#define _SYS_FS_ZFS_ZNODE_H
+
+#define MASTER_NODE_OBJ 1
+#define ZFS_ROOT_OBJ "ROOT"
+#define ZPL_VERSION_STR "VERSION"
+
+#define ZPL_VERSION 3ULL
+
+#define ZFS_DIRENT_OBJ(de) BF64_GET(de, 0, 48)
+
+/*
+ * This is the persistent portion of the znode. It is stored
+ * in the "bonus buffer" of the file. Short symbolic links
+ * are also stored in the bonus buffer.
+ */
+typedef struct znode_phys {
+ uint64_t zp_atime[2]; /* 0 - last file access time */
+ uint64_t zp_mtime[2]; /* 16 - last file modification time */
+ uint64_t zp_ctime[2]; /* 32 - last file change time */
+ uint64_t zp_crtime[2]; /* 48 - creation time */
+ uint64_t zp_gen; /* 64 - generation (txg of creation) */
+ uint64_t zp_mode; /* 72 - file mode bits */
+ uint64_t zp_size; /* 80 - size of file */
+ uint64_t zp_parent; /* 88 - directory parent (`..') */
+ uint64_t zp_links; /* 96 - number of links to file */
+ uint64_t zp_xattr; /* 104 - DMU object for xattrs */
+ uint64_t zp_rdev; /* 112 - dev_t for VBLK & VCHR files */
+ uint64_t zp_flags; /* 120 - persistent flags */
+ uint64_t zp_uid; /* 128 - file owner */
+ uint64_t zp_gid; /* 136 - owning group */
+ uint64_t zp_pad[4]; /* 144 - future */
+ zfs_znode_acl_t zp_acl; /* 176 - 263 ACL */
+ /*
+ * Data may pad out any remaining bytes in the znode buffer, eg:
+ *
+ * |<---------------------- dnode_phys (512) ------------------------>|
+ * |<-- dnode (192) --->|<----------- "bonus" buffer (320) ---------->|
+ * |<---- znode (264) ---->|<---- data (56) ---->|
+ *
+ * At present, we only use this space to store symbolic links.
+ */
+} znode_phys_t;
+
+#endif /* _SYS_FS_ZFS_ZNODE_H */
diff --git a/tools/libfsimage/zfs/zfs-include/zil.h
b/tools/libfsimage/zfs/zfs-include/zil.h
new file mode 100644
--- /dev/null
+++ b/tools/libfsimage/zfs/zfs-include/zil.h
@@ -0,0 +1,51 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc.
+ *
+ * This program 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+/*
+ * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#ifndef _SYS_ZIL_H
+#define _SYS_ZIL_H
+
+/*
+ * Intent log format:
+ *
+ * Each objset has its own intent log. The log header (zil_header_t)
+ * for objset N's intent log is kept in the Nth object of the SPA's
+ * intent_log objset. The log header points to a chain of log blocks,
+ * each of which contains log records (i.e., transactions) followed by
+ * a log block trailer (zil_trailer_t). The format of a log record
+ * depends on the record (or transaction) type, but all records begin
+ * with a common structure that defines the type, length, and txg.
+ */
+
+/*
+ * Intent log header - this on disk structure holds fields to manage
+ * the log. All fields are 64 bit to easily handle cross architectures.
+ */
+typedef struct zil_header {
+ uint64_t zh_claim_txg; /* txg in which log blocks were claimed */
+ uint64_t zh_replay_seq; /* highest replayed sequence number */
+ blkptr_t zh_log; /* log chain */
+ uint64_t zh_claim_seq; /* highest claimed sequence number */
+ uint64_t zh_pad[5];
+} zil_header_t;
+
+#endif /* _SYS_ZIL_H */
diff --git a/tools/libfsimage/zfs/zfs-include/zio.h
b/tools/libfsimage/zfs/zfs-include/zio.h
new file mode 100644
--- /dev/null
+++ b/tools/libfsimage/zfs/zfs-include/zio.h
@@ -0,0 +1,81 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc.
+ *
+ * This program 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+/*
+ * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#ifndef _ZIO_H
+#define _ZIO_H
+
+#define ZBT_MAGIC 0x210da7ab10c7a11ULL /* zio data bloc tail */
+
+typedef struct zio_block_tail {
+ uint64_t zbt_magic; /* for validation, endianness */
+ zio_cksum_t zbt_cksum; /* 256-bit checksum */
+} zio_block_tail_t;
+
+/*
+ * Gang block headers are self-checksumming and contain an array
+ * of block pointers.
+ */
+#define SPA_GANGBLOCKSIZE SPA_MINBLOCKSIZE
+#define SPA_GBH_NBLKPTRS ((SPA_GANGBLOCKSIZE - \
+ sizeof (zio_block_tail_t)) / sizeof (blkptr_t))
+#define SPA_GBH_FILLER ((SPA_GANGBLOCKSIZE - \
+ sizeof (zio_block_tail_t) - \
+ (SPA_GBH_NBLKPTRS * sizeof (blkptr_t))) /\
+ sizeof (uint64_t))
+
+#define ZIO_GET_IOSIZE(zio) \
+ (BP_IS_GANG((zio)->io_bp) ? \
+ SPA_GANGBLOCKSIZE : BP_GET_PSIZE((zio)->io_bp))
+
+typedef struct zio_gbh {
+ blkptr_t zg_blkptr[SPA_GBH_NBLKPTRS];
+ uint64_t zg_filler[SPA_GBH_FILLER];
+ zio_block_tail_t zg_tail;
+} zio_gbh_phys_t;
+
+enum zio_checksum {
+ ZIO_CHECKSUM_INHERIT = 0,
+ ZIO_CHECKSUM_ON,
+ ZIO_CHECKSUM_OFF,
+ ZIO_CHECKSUM_LABEL,
+ ZIO_CHECKSUM_GANG_HEADER,
+ ZIO_CHECKSUM_ZILOG,
+ ZIO_CHECKSUM_FLETCHER_2,
+ ZIO_CHECKSUM_FLETCHER_4,
+ ZIO_CHECKSUM_SHA256,
+ ZIO_CHECKSUM_FUNCTIONS
+};
+
+#define ZIO_CHECKSUM_ON_VALUE ZIO_CHECKSUM_FLETCHER_2
+#define ZIO_CHECKSUM_DEFAULT ZIO_CHECKSUM_ON
+
+enum zio_compress {
+ ZIO_COMPRESS_INHERIT = 0,
+ ZIO_COMPRESS_ON,
+ ZIO_COMPRESS_OFF,
+ ZIO_COMPRESS_LZJB,
+ ZIO_COMPRESS_EMPTY,
+ ZIO_COMPRESS_FUNCTIONS
+};
+
+#endif /* _ZIO_H */
diff --git a/tools/libfsimage/zfs/zfs-include/zio_checksum.h
b/tools/libfsimage/zfs/zfs-include/zio_checksum.h
new file mode 100644
--- /dev/null
+++ b/tools/libfsimage/zfs/zfs-include/zio_checksum.h
@@ -0,0 +1,42 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc.
+ *
+ * This program 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+/*
+ * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#ifndef _SYS_ZIO_CHECKSUM_H
+#define _SYS_ZIO_CHECKSUM_H
+
+/*
+ * Signature for checksum functions.
+ */
+typedef void zio_checksum_t(const void *data, uint64_t size, zio_cksum_t *zcp);
+
+/*
+ * Information about each checksum function.
+ */
+typedef struct zio_checksum_info {
+ zio_checksum_t *ci_func[2]; /* checksum function for each byteorder */
+ int ci_correctable; /* number of correctable bits */
+ int ci_zbt; /* uses zio block tail? */
+ char *ci_name; /* descriptive name */
+} zio_checksum_info_t;
+
+#endif /* _SYS_ZIO_CHECKSUM_H */
diff --git a/tools/libfsimage/zfs/zfs_fletcher.c
b/tools/libfsimage/zfs/zfs_fletcher.c
new file mode 100644
--- /dev/null
+++ b/tools/libfsimage/zfs/zfs_fletcher.c
@@ -0,0 +1,93 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc.
+ *
+ * This program 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+/*
+ * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#include "fsys_zfs.h"
+
+
+void
+fletcher_2_native(const void *buf, uint64_t size, zio_cksum_t *zcp)
+{
+ const uint64_t *ip = buf;
+ const uint64_t *ipend = ip + (size / sizeof (uint64_t));
+ uint64_t a0, b0, a1, b1;
+
+ for (a0 = b0 = a1 = b1 = 0; ip < ipend; ip += 2) {
+ a0 += ip[0];
+ a1 += ip[1];
+ b0 += a0;
+ b1 += a1;
+ }
+
+ ZIO_SET_CHECKSUM(zcp, a0, a1, b0, b1);
+}
+
+void
+fletcher_2_byteswap(const void *buf, uint64_t size, zio_cksum_t *zcp)
+{
+ const uint64_t *ip = buf;
+ const uint64_t *ipend = ip + (size / sizeof (uint64_t));
+ uint64_t a0, b0, a1, b1;
+
+ for (a0 = b0 = a1 = b1 = 0; ip < ipend; ip += 2) {
+ a0 += BSWAP_64(ip[0]);
+ a1 += BSWAP_64(ip[1]);
+ b0 += a0;
+ b1 += a1;
+ }
+
+ ZIO_SET_CHECKSUM(zcp, a0, a1, b0, b1);
+}
+
+void
+fletcher_4_native(const void *buf, uint64_t size, zio_cksum_t *zcp)
+{
+ const uint32_t *ip = buf;
+ const uint32_t *ipend = ip + (size / sizeof (uint32_t));
+ uint64_t a, b, c, d;
+
+ for (a = b = c = d = 0; ip < ipend; ip++) {
+ a += ip[0];
+ b += a;
+ c += b;
+ d += c;
+ }
+
+ ZIO_SET_CHECKSUM(zcp, a, b, c, d);
+}
+
+void
+fletcher_4_byteswap(const void *buf, uint64_t size, zio_cksum_t *zcp)
+{
+ const uint32_t *ip = buf;
+ const uint32_t *ipend = ip + (size / sizeof (uint32_t));
+ uint64_t a, b, c, d;
+
+ for (a = b = c = d = 0; ip < ipend; ip++) {
+ a += BSWAP_32(ip[0]);
+ b += a;
+ c += b;
+ d += c;
+ }
+
+ ZIO_SET_CHECKSUM(zcp, a, b, c, d);
+}
diff --git a/tools/libfsimage/zfs/zfs_lzjb.c b/tools/libfsimage/zfs/zfs_lzjb.c
new file mode 100644
--- /dev/null
+++ b/tools/libfsimage/zfs/zfs_lzjb.c
@@ -0,0 +1,60 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc.
+ *
+ * This program 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+/*
+ * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#include "fsys_zfs.h"
+
+#define MATCH_BITS 6
+#define MATCH_MIN 3
+#define OFFSET_MASK ((1 << (16 - MATCH_BITS)) - 1)
+
+
+/*ARGSUSED*/
+int
+lzjb_decompress(void *s_start, void *d_start, size_t s_len, size_t d_len)
+{
+ unsigned char *src = s_start;
+ unsigned char *dst = d_start;
+ unsigned char *d_end = (unsigned char *)d_start + d_len;
+ unsigned char *cpy;
+ unsigned char copymap = '\0';
+ int copymask = 1 << (NBBY - 1);
+
+ while (dst < d_end) {
+ if ((copymask <<= 1) == (1 << NBBY)) {
+ copymask = 1;
+ copymap = *src++;
+ }
+ if (copymap & (unsigned char)copymask) {
+ int mlen = (src[0] >> (NBBY - MATCH_BITS)) + MATCH_MIN;
+ int offset = ((src[0] << NBBY) | src[1]) & OFFSET_MASK;
+ src += 2;
+ if ((cpy = dst - offset) < (unsigned char *)d_start)
+ return (-1);
+ while (--mlen >= 0 && dst < d_end)
+ *dst++ = *cpy++;
+ } else {
+ *dst++ = *src++;
+ }
+ }
+ return (0);
+}
diff --git a/tools/libfsimage/zfs/zfs_sha256.c
b/tools/libfsimage/zfs/zfs_sha256.c
new file mode 100644
--- /dev/null
+++ b/tools/libfsimage/zfs/zfs_sha256.c
@@ -0,0 +1,124 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc.
+ *
+ * This program 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+/*
+ * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
+ * Use is subject to license terms.
+ */
+
+#include "fsys_zfs.h"
+
+/*
+ * SHA-256 checksum, as specified in FIPS 180-2, available at:
+ * http://csrc.nist.gov/cryptval
+ *
+ * This is a very compact implementation of SHA-256.
+ * It is designed to be simple and portable, not to be fast.
+ */
+
+/*
+ * The literal definitions according to FIPS180-2 would be:
+ *
+ * Ch(x, y, z) (((x) & (y)) ^ ((~(x)) & (z)))
+ * Maj(x, y, z) (((x) & (y)) | ((x) & (z)) | ((y) & (z)))
+ *
+ * We use logical equivalents which require one less op.
+ */
+#define Ch(x, y, z) ((z) ^ ((x) & ((y) ^ (z))))
+#define Maj(x, y, z) (((x) & (y)) ^ ((z) & ((x) ^ (y))))
+#define Rot32(x, s) (((x) >> s) | ((x) << (32 - s)))
+#define SIGMA0(x) (Rot32(x, 2) ^ Rot32(x, 13) ^ Rot32(x, 22))
+#define SIGMA1(x) (Rot32(x, 6) ^ Rot32(x, 11) ^ Rot32(x, 25))
+#define sigma0(x) (Rot32(x, 7) ^ Rot32(x, 18) ^ ((x) >> 3))
+#define sigma1(x) (Rot32(x, 17) ^ Rot32(x, 19) ^ ((x) >> 10))
+
+static const uint32_t SHA256_K[64] = {
+ 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5,
+ 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
+ 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
+ 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
+ 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc,
+ 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
+ 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7,
+ 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
+ 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
+ 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
+ 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3,
+ 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
+ 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5,
+ 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
+ 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
+ 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2
+};
+
+static void
+SHA256Transform(uint32_t *H, const uint8_t *cp)
+{
+ uint32_t a, b, c, d, e, f, g, h, t, T1, T2, W[64];
+
+ for (t = 0; t < 16; t++, cp += 4)
+ W[t] = (cp[0] << 24) | (cp[1] << 16) | (cp[2] << 8) | cp[3];
+
+ for (t = 16; t < 64; t++)
+ W[t] = sigma1(W[t - 2]) + W[t - 7] +
+ sigma0(W[t - 15]) + W[t - 16];
+
+ a = H[0]; b = H[1]; c = H[2]; d = H[3];
+ e = H[4]; f = H[5]; g = H[6]; h = H[7];
+
+ for (t = 0; t < 64; t++) {
+ T1 = h + SIGMA1(e) + Ch(e, f, g) + SHA256_K[t] + W[t];
+ T2 = SIGMA0(a) + Maj(a, b, c);
+ h = g; g = f; f = e; e = d + T1;
+ d = c; c = b; b = a; a = T1 + T2;
+ }
+
+ H[0] += a; H[1] += b; H[2] += c; H[3] += d;
+ H[4] += e; H[5] += f; H[6] += g; H[7] += h;
+}
+
+void
+zio_checksum_SHA256(const void *buf, uint64_t size, zio_cksum_t *zcp)
+{
+ uint32_t H[8] = { 0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a,
+ 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19 };
+ uint8_t pad[128];
+ int padsize = size & 63;
+ int i;
+
+ for (i = 0; i < size - padsize; i += 64)
+ SHA256Transform(H, (uint8_t *)buf + i);
+
+ for (i = 0; i < padsize; i++)
+ pad[i] = ((uint8_t *)buf)[i];
+
+ for (pad[padsize++] = 0x80; (padsize & 63) != 56; padsize++)
+ pad[padsize] = 0;
+
+ for (i = 0; i < 8; i++)
+ pad[padsize++] = (size << 3) >> (56 - 8 * i);
+
+ for (i = 0; i < padsize; i += 64)
+ SHA256Transform(H, pad + i);
+
+ ZIO_SET_CHECKSUM(zcp,
+ (uint64_t)H[0] << 32 | H[1],
+ (uint64_t)H[2] << 32 | H[3],
+ (uint64_t)H[4] << 32 | H[5],
+ (uint64_t)H[6] << 32 | H[7]);
+}
diff --git a/tools/pygrub/src/fsimage/fsimage.c
b/tools/pygrub/src/fsimage/fsimage.c
--- a/tools/pygrub/src/fsimage/fsimage.c
+++ b/tools/pygrub/src/fsimage/fsimage.c
@@ -17,7 +17,7 @@
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
- * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
+ * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
@@ -281,6 +281,22 @@ fsimage_open(PyObject *o, PyObject *args
return (PyObject *)fs;
}
+static PyObject *
+fsimage_getbootstring(PyObject *o, PyObject *args)
+{
+ PyObject *fs;
+ char *bootstring;
+ fsi_t *fsi;
+
+ if (!PyArg_ParseTuple(args, "O", &fs))
+ return (NULL);
+
+ fsi = ((fsimage_fs_t *)fs)->fs;
+ bootstring = fsi_fs_bootstring(fsi);
+
+ return Py_BuildValue("s", bootstring);
+}
+
PyDoc_STRVAR(fsimage_open__doc__,
"open(name, [offset=off]) - Open the given file as a filesystem image.\n"
"\n"
@@ -288,9 +304,15 @@ PyDoc_STRVAR(fsimage_open__doc__,
"offset - offset of file system within file image.\n"
"options - mount options string.\n");
+PyDoc_STRVAR(fsimage_getbootstring__doc__,
+ "getbootstring(fs) - Return the boot string needed for this file system "
+ "or NULL if none is needed.\n");
+
static struct PyMethodDef fsimage_module_methods[] = {
{ "open", (PyCFunction)fsimage_open,
METH_VARARGS|METH_KEYWORDS, fsimage_open__doc__ },
+ { "getbootstring", (PyCFunction)fsimage_getbootstring,
+ METH_VARARGS, fsimage_getbootstring__doc__ },
{ NULL, NULL, 0, NULL }
};
diff --git a/tools/pygrub/src/pygrub b/tools/pygrub/src/pygrub
--- a/tools/pygrub/src/pygrub
+++ b/tools/pygrub/src/pygrub
@@ -646,7 +646,13 @@ if __name__ == "__main__":
print " args: %s" % chosencfg["args"]
sys.exit(0)
- fs = fsimage.open(file, get_fs_offset(file))
+ # if boot filesystem is set then pass to fsimage.open
+ bootfsargs = '"%s"' % incfg["args"]
+ bootfsgroup = re.findall('zfs-bootfs=(.*?)[\s\,\"]', bootfsargs)
+ if bootfsgroup:
+ fs = fsimage.open(file, get_fs_offset(file), bootfsgroup[0])
+ else:
+ fs = fsimage.open(file, get_fs_offset(file))
chosencfg = sniff_solaris(fs, incfg)
@@ -672,7 +678,15 @@ if __name__ == "__main__":
if bootcfg["ramdisk"]:
sxp += "(ramdisk %s)" % bootcfg["ramdisk"]
if chosencfg["args"]:
- sxp += "(args \"%s\")" % chosencfg["args"]
+ zfsinfo = fsimage.getbootstring(fs)
+ if zfsinfo is None:
+ sxp += "(args \"%s\")" % chosencfg["args"]
+ else:
+ e = re.compile("zfs-bootfs=[\w\-\.\:@/]+" )
+ (chosencfg["args"],count) = e.subn(zfsinfo, chosencfg["args"])
+ if count == 0:
+ chosencfg["args"] += " -B %s" % zfsinfo
+ sxp += "(args \"%s\")" % (chosencfg["args"])
sys.stdout.flush()
os.write(fd, sxp)
_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel
|
 |
Lists.xenproject.org is hosted with RackSpace, monitoring our |