diff options
Diffstat (limited to 'sys-boot/grub/files/grub-2.00-zfs-feature-flag-support-r1.patch')
| -rw-r--r-- | sys-boot/grub/files/grub-2.00-zfs-feature-flag-support-r1.patch | 893 |
1 files changed, 893 insertions, 0 deletions
diff --git a/sys-boot/grub/files/grub-2.00-zfs-feature-flag-support-r1.patch b/sys-boot/grub/files/grub-2.00-zfs-feature-flag-support-r1.patch new file mode 100644 index 00000000..b7d780f2 --- /dev/null +++ b/sys-boot/grub/files/grub-2.00-zfs-feature-flag-support-r1.patch @@ -0,0 +1,893 @@ +ZFS Feature Flag Support + +This is a monolithic version of the following commits: + +https://github.com/maxximino/grub2/commit/31a32560fd7948ae5ff5c63105d7c068de7890c8 +https://github.com/maxximino/grub2/commit/595d76e8ca0690a963f5533689de8db54ef07e75 +https://github.com/maxximino/grub2/commit/58344034e40218b20500fa2936eb4d7d019e1e88 +https://github.com/maxximino/grub2/commit/f98cb078abab2c14bb0766b5a0ceb055683dab81 +https://github.com/maxximino/grub2/commit/f12806f43a969a654dee7bb89b2e8fd5c42f0e2e + +A change was made to account for d8a0feb6 from upstream. This change prevents a +compile time failure that is caused by a change in the callback interface used +by mzap_interate(). Modifications to nvlist_find_value() were reverted to +resolve Gentoo bug #462740. This eliminated the need for the new nvpair_type() +and nvpair_value() functions. They have been removed to silence a compiler +warning and reduce the size of the patch. Further adjustments were made to +silence the following warnings: + +/var/tmp/portage/sys-boot/grub-2.00-r2/work/grub-2.00/grub-core/fs/zfs/zfs_lz4.c:77:5: +warning: "__STDC_VERSION__" is not defined [-Wundef] +/var/tmp/portage/sys-boot/grub-2.00-r2/work/grub-2.00/grub-core/fs/zfs/zfs.c:4079:3: +warning: passing argument 4 of 'mzap_iterate' from incompatible pointer type +[enabled by default] + +The initial feature flag support patches were written by Delphix while the LZ4 +support was written by Saso Kiselkov. The work porting this to GRUB2 was done +by Massimo Maggi, while the adaption to Gentoo's GRUB2 package was done by +Richard Yao. + +diff --git a/Makefile.util.def b/Makefile.util.def +index b80187c..1bf3038 100644 +--- a/Makefile.util.def ++++ b/Makefile.util.def +@@ -95,6 +95,7 @@ library = { + common = grub-core/fs/zfs/zfs.c; + common = grub-core/fs/zfs/zfsinfo.c; + common = grub-core/fs/zfs/zfs_lzjb.c; ++ common = grub-core/fs/zfs/zfs_lz4.c; + common = grub-core/fs/zfs/zfs_sha256.c; + common = grub-core/fs/zfs/zfs_fletcher.c; + common = grub-core/lib/envblk.c; +diff --git a/grub-core/Makefile.core.def b/grub-core/Makefile.core.def +index 39e77a4..1550b90 100644 +--- a/grub-core/Makefile.core.def ++++ b/grub-core/Makefile.core.def +@@ -1186,6 +1186,7 @@ module = { + name = zfs; + common = fs/zfs/zfs.c; + common = fs/zfs/zfs_lzjb.c; ++ common = fs/zfs/zfs_lz4.c; + common = fs/zfs/zfs_sha256.c; + common = fs/zfs/zfs_fletcher.c; + }; +diff --git a/grub-core/fs/zfs/zfs.c b/grub-core/fs/zfs/zfs.c +index ba0554a..811e3df 100644 +--- a/grub-core/fs/zfs/zfs.c ++++ b/grub-core/fs/zfs/zfs.c +@@ -2,6 +2,7 @@ + * GRUB -- GRand Unified Bootloader + * Copyright (C) 1999,2000,2001,2002,2003,2004,2009,2010,2011 Free Software Foundation, Inc. + * Copyright 2010 Sun Microsystems, Inc. ++ * Copyright (c) 2012 by Delphix. All rights reserved. + * + * GRUB is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by +@@ -153,11 +154,13 @@ ZAP_LEAF_ENTRY(zap_leaf_phys_t *l, int bs, int idx) + + + /* +- * Decompression Entry - lzjb ++ * Decompression Entry - lzjb & lz4 + */ + + extern grub_err_t lzjb_decompress (void *, void *, grub_size_t, grub_size_t); + ++extern grub_err_t lz4_decompress (void *, void *, grub_size_t, grub_size_t); ++ + typedef grub_err_t zfs_decomp_func_t (void *s_start, void *d_start, + grub_size_t s_len, grub_size_t d_len); + typedef struct decomp_entry +@@ -263,6 +266,19 @@ grub_crypto_cipher_handle_t (*grub_zfs_load_key) (const struct grub_zfs_key *key + grub_size_t keysize, + grub_uint64_t salt, + grub_uint64_t algo) = NULL; ++/* ++ * List of pool features that the grub implementation of ZFS supports for ++ * read. Note that features that are only required for write do not need ++ * to be listed here since grub opens pools in read-only mode. ++ */ ++static const char *spa_feature_names[] = { ++ "org.illumos:lz4_compress",NULL ++}; ++ ++static int NESTED_FUNC_ATTR ++check_feature(const char *name, grub_uint64_t val); ++static int ++check_mos_features(dnode_phys_t *mosmdn_phys,grub_zfs_endian_t endian,struct grub_zfs_data* data ); + + static grub_err_t + zlib_decompress (void *s, void *d, +@@ -322,6 +338,7 @@ static decomp_entry_t decomp_table[ZIO_COMPRESS_FUNCTIONS] = { + {"gzip-8", zlib_decompress}, /* ZIO_COMPRESS_GZIP8 */ + {"gzip-9", zlib_decompress}, /* ZIO_COMPRESS_GZIP9 */ + {"zle", zle_decompress}, /* ZIO_COMPRESS_ZLE */ ++ {"lz4", lz4_decompress}, /* ZIO_COMPRESS_LZ4 */ + }; + + static grub_err_t zio_read_data (blkptr_t * bp, grub_zfs_endian_t endian, +@@ -482,15 +499,11 @@ uberblock_verify (uberblock_phys_t * ub, grub_uint64_t offset, + + if (grub_zfs_to_cpu64 (uber->ub_magic, GRUB_ZFS_LITTLE_ENDIAN) + == UBERBLOCK_MAGIC +- && grub_zfs_to_cpu64 (uber->ub_version, GRUB_ZFS_LITTLE_ENDIAN) > 0 +- && grub_zfs_to_cpu64 (uber->ub_version, GRUB_ZFS_LITTLE_ENDIAN) +- <= SPA_VERSION) +- endian = GRUB_ZFS_LITTLE_ENDIAN; ++ && SPA_VERSION_IS_SUPPORTED(grub_zfs_to_cpu64 (uber->ub_version, GRUB_ZFS_LITTLE_ENDIAN))) ++ endian = GRUB_ZFS_LITTLE_ENDIAN; + + if (grub_zfs_to_cpu64 (uber->ub_magic, GRUB_ZFS_BIG_ENDIAN) == UBERBLOCK_MAGIC +- && grub_zfs_to_cpu64 (uber->ub_version, GRUB_ZFS_BIG_ENDIAN) > 0 +- && grub_zfs_to_cpu64 (uber->ub_version, GRUB_ZFS_BIG_ENDIAN) +- <= SPA_VERSION) ++ && SPA_VERSION_IS_SUPPORTED(grub_zfs_to_cpu64 (uber->ub_version, GRUB_ZFS_BIG_ENDIAN))) + endian = GRUB_ZFS_BIG_ENDIAN; + + if (endian == GRUB_ZFS_UNKNOWN_ENDIAN) +@@ -764,6 +777,99 @@ fill_vdev_info (struct grub_zfs_data *data, + } + + /* ++ * 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) ++ * ++ */ ++ ++/* ++ * The nvlist_next_nvpair() function returns a handle to the next nvpair in the ++ * list following nvpair. If nvpair is NULL, the first pair is returned. If ++ * nvpair is the last pair in the nvlist, NULL is returned. ++ */ ++static const char * ++nvlist_next_nvpair(const char *nvl, const char *nvpair) ++{ ++ const char *nvp; ++ int encode_size; ++ int name_len; ++ if (nvl == NULL) ++ return (NULL); ++ ++ if (nvpair == NULL) { ++ /* skip over header, nvl_version and nvl_nvflag */ ++ nvpair = nvl + 4 * 3; ++ } else { ++ /* skip to the next nvpair */ ++ encode_size = grub_be_to_cpu32 (grub_get_unaligned32(nvpair)); ++ nvpair += encode_size; ++ } ++ /* 8 bytes of 0 marks the end of the list */ ++ if (*(grub_uint64_t*)nvpair == 0) ++ return (NULL); ++ /*consistency checks*/ ++ if (nvpair + 4 * 3 >= nvl + VDEV_PHYS_SIZE) ++ { ++ grub_dprintf ("zfs", "nvlist overflow\n"); ++ grub_error (GRUB_ERR_BAD_FS, "incorrect nvlist"); ++ return (NULL); ++ } ++ encode_size = grub_be_to_cpu32 (grub_get_unaligned32(nvpair)); ++ ++ nvp = nvpair + 4*2; ++ name_len = grub_be_to_cpu32 (grub_get_unaligned32 (nvp)); ++ nvp += 4; ++ ++ nvp = nvp + ((name_len + 3) & ~3); // align ++ if (nvp + 4 >= nvl + VDEV_PHYS_SIZE ++ || encode_size < 0 ++ || nvp + 4 + encode_size > nvl + VDEV_PHYS_SIZE) ++ { ++ grub_dprintf ("zfs", "nvlist overflow\n"); ++ grub_error (GRUB_ERR_BAD_FS, "incorrect nvlist"); ++ return (NULL); ++ } ++ /* end consistency checks */ ++ ++ return (nvpair); ++} ++/* ++ * This function returns 0 on success and 1 on failure. On success, a string ++ * containing the name of nvpair is saved in buf. ++ */ ++static int ++nvpair_name(const char *nvp, char **buf, int* buflen) ++{ ++ int len; ++ ++ /* skip over encode/decode size */ ++ nvp += 4 * 2; ++ ++ len = grub_be_to_cpu32 (grub_get_unaligned32 (nvp)); ++ nvp=nvp+4; ++ ++ *buf=(char*)nvp; ++ *buflen=len; ++ ++ return (0); ++} ++ ++/* + * Check the disk label information and retrieve needed vdev name-value pairs. + * + */ +@@ -773,7 +879,7 @@ check_pool_label (struct grub_zfs_data *data, + int *inserted) + { + grub_uint64_t pool_state, txg = 0; +- char *nvlist; ++ char *nvlist,*features; + #if 0 + char *nv; + #endif +@@ -837,13 +943,13 @@ check_pool_label (struct grub_zfs_data *data, + } + grub_dprintf ("zfs", "check 8 passed\n"); + +- if (version > SPA_VERSION) ++ if (!SPA_VERSION_IS_SUPPORTED(version)) + { + grub_free (nvlist); + return grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET, + "too new version %llu > %llu", + (unsigned long long) version, +- (unsigned long long) SPA_VERSION); ++ (unsigned long long) SPA_VERSION_BEFORE_FEATURES); + } + grub_dprintf ("zfs", "check 9 passed\n"); + +@@ -893,7 +999,30 @@ check_pool_label (struct grub_zfs_data *data, + grub_free (nv); + } + grub_dprintf ("zfs", "check 10 passed\n"); +- ++ if ((features=grub_zfs_nvlist_lookup_nvlist(nvlist, ZPOOL_CONFIG_FEATURES_FOR_READ))) ++ { ++ const char *nvp=NULL; ++ char *name = grub_zalloc(51); ++ char *nameptr; ++ int namelen; ++ while ((nvp = nvlist_next_nvpair(features, nvp)) != NULL) ++ { ++ nvpair_name(nvp, &nameptr,&namelen); ++ if(namelen > 50){namelen=50;} ++ grub_strncpy(name,nameptr,namelen); ++ name[namelen]=0; ++ grub_dprintf("zfs","namelen=%u str=%s\n",namelen,name); ++ if (check_feature(name,1) != 0) ++ { ++ grub_dprintf("zfs","feature missing in check_pool_label:%s\n",name); ++ err= grub_error (GRUB_ERR_NOT_IMPLEMENTED_YET," check_pool_label missing feature '%s' for read",name); ++ grub_free(name); ++ return err; ++ } ++ } ++ grub_free(name); ++ } ++ grub_dprintf ("zfs", "check 12 passed (feature flags)\n"); + grub_free (nvlist); + + return GRUB_ERR_NONE; +@@ -3034,27 +3163,6 @@ dnode_get_fullpath (const char *fullpath, struct subvolume *subvol, + return err; + } + +-/* +- * 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) +- * +- */ +- + static int + nvlist_find_value (const char *nvlist_in, const char *name, + int valtype, char **val, +@@ -3386,6 +3494,10 @@ zfs_mount (grub_device_t dev) + return NULL; + } + ++ if (ub->ub_version >= SPA_VERSION_FEATURES && ++ check_mos_features(&((objset_phys_t *) osp)->os_meta_dnode,ub_endian, data) != 0) ++ return NULL; ++ + /* Got the MOS. Save it at the memory addr MOS. */ + grub_memmove (&(data->mos.dn), &((objset_phys_t *) osp)->os_meta_dnode, + DNODE_SIZE); +@@ -3910,6 +4022,64 @@ grub_zfs_dir (grub_device_t device, const char *path, + return grub_errno; + } + ++static int NESTED_FUNC_ATTR ++check_feature(const char *name, grub_uint64_t val) ++{ ++ int i; ++ if(val ==0) return 0; ++ if(*name==0) return 0; ++ for (i = 0; spa_feature_names[i] != NULL; i++) ++ { ++ if (grub_strcmp(name, spa_feature_names[i]) == 0) ++ return 0; ++ } ++ grub_printf("missing feature for read '%s'\n",name); ++ return 1; ++} ++ ++/* ++ * Checks whether the MOS features that are active are supported by this ++ * (GRUB's) implementation of ZFS. ++ * ++ * Return: ++ * 0: Success. ++ * errnum: Failure. ++ */ ++ ++static int ++check_mos_features(dnode_phys_t *mosmdn_phys,grub_zfs_endian_t endian,struct grub_zfs_data* data ) ++{ ++ grub_uint64_t objnum; ++ grub_uint8_t errnum = 0; ++ dnode_end_t dn,mosmdn; ++ mzap_phys_t* mzp; ++ grub_zfs_endian_t endianzap; ++ int size; ++ grub_memmove(&(mosmdn.dn),mosmdn_phys,sizeof(dnode_phys_t)); ++ mosmdn.endian=endian; ++ if ((errnum = dnode_get(&mosmdn, DMU_POOL_DIRECTORY_OBJECT, ++ DMU_OT_OBJECT_DIRECTORY, &dn,data)) != 0) ++ return (errnum); ++ ++ /* ++ * Find the object number for 'features_for_read' and retrieve its ++ * corresponding dnode. Note that we don't check features_for_write ++ * because GRUB is not opening the pool for write. ++ */ ++ if ((errnum = zap_lookup(&dn, DMU_POOL_FEATURES_FOR_READ, &objnum, data,0)) != 0) ++ return (errnum); ++ ++ if ((errnum = dnode_get(&mosmdn, objnum, DMU_OTN_ZAP_METADATA, &dn, data)) != 0) ++ return (errnum); ++ ++ if ((errnum = dmu_read(&dn, 0, (void**)&mzp, &endianzap,data)) != 0) ++ return (errnum); ++ ++ size = grub_zfs_to_cpu16 (dn.dn.dn_datablkszsec, dn.endian) << SPA_MINBLOCKSHIFT; ++ return (mzap_iterate(mzp,endianzap, size, check_feature)); ++} ++ ++ + #ifdef GRUB_UTIL + static grub_err_t + grub_zfs_embed (grub_device_t device __attribute__ ((unused)), +diff --git a/grub-core/fs/zfs/zfs_lz4.c b/grub-core/fs/zfs/zfs_lz4.c +new file mode 100644 +index 0000000..ff85a77 +--- /dev/null ++++ b/grub-core/fs/zfs/zfs_lz4.c +@@ -0,0 +1,321 @@ ++/* ++ * LZ4 - Fast LZ compression algorithm ++ * Header File ++ * Copyright (C) 2011-2013, Yann Collet. ++ * BSD 2-Clause License (http://www.opensource.org/licenses/bsd-license.php) ++ * ++ * Redistribution and use in source and binary forms, with or without ++ * modification, are permitted provided that the following conditions are ++ * met: ++ * ++ * * Redistributions of source code must retain the above copyright ++ * notice, this list of conditions and the following disclaimer. ++ * * Redistributions in binary form must reproduce the above ++ * copyright notice, this list of conditions and the following disclaimer ++ * in the documentation and/or other materials provided with the ++ * distribution. ++ * ++ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ++ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT ++ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR ++ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT ++ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, ++ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT ++ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, ++ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY ++ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ++ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE ++ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. ++ * ++ * You can contact the author at : ++ * - LZ4 homepage : http://fastcompression.blogspot.com/p/lz4.html ++ * - LZ4 source repository : http://code.google.com/p/lz4/ ++ */ ++ ++#include <grub/err.h> ++#include <grub/mm.h> ++#include <grub/misc.h> ++#include <grub/types.h> ++ ++static int LZ4_uncompress_unknownOutputSize(const char *source, char *dest, ++ int isize, int maxOutputSize); ++ ++/* ++ * CPU Feature Detection ++ */ ++ ++/* 32 or 64 bits ? */ ++#if (defined(__x86_64__) || defined(__x86_64) || defined(__amd64__) || \ ++ defined(__amd64) || defined(__ppc64__) || defined(_WIN64) || \ ++ defined(__LP64__) || defined(_LP64)) ++#define LZ4_ARCH64 1 ++#else ++#define LZ4_ARCH64 0 ++#endif ++ ++/* ++ * Little Endian or Big Endian? ++ * Note: overwrite the below #define if you know your architecture endianess. ++ */ ++#if (defined(__BIG_ENDIAN__) || defined(__BIG_ENDIAN) || \ ++ defined(_BIG_ENDIAN) || defined(_ARCH_PPC) || defined(__PPC__) || \ ++ defined(__PPC) || defined(PPC) || defined(__powerpc__) || \ ++ defined(__powerpc) || defined(powerpc) || \ ++ ((defined(__BYTE_ORDER__)&&(__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__)))) ++#define LZ4_BIG_ENDIAN 1 ++#else ++ /* ++ * Little Endian assumed. PDP Endian and other very rare endian format ++ * are unsupported. ++ */ ++#endif ++ ++/* ++ * Compiler Options ++ */ ++ ++#if defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L /* C99 */ ++/* "restrict" is a known keyword */ ++#else ++/* Disable restrict */ ++#ifndef restrict ++#define restrict /* Only if somebody already didn't take care of that.*/ ++#endif ++#endif ++ ++#define GCC_VERSION (__GNUC__ * 100 + __GNUC_MINOR__) ++ ++#define lz4_bswap16(x) ((unsigned short int) ((((x) >> 8) & 0xffu) \ ++ | (((x) & 0xffu) << 8))) ++ ++#if (GCC_VERSION >= 302) || (__INTEL_COMPILER >= 800) || defined(__clang__) ++#define expect(expr, value) (__builtin_expect((expr), (value))) ++#else ++#define expect(expr, value) (expr) ++#endif ++ ++#define likely(expr) expect((expr) != 0, 1) ++#define unlikely(expr) expect((expr) != 0, 0) ++ ++/* Basic types */ ++#define BYTE grub_uint8_t ++#define U16 grub_uint16_t ++#define U32 grub_uint32_t ++#define S32 grub_int32_t ++#define U64 grub_uint64_t ++typedef grub_size_t size_t; ++ ++typedef struct _U16_S { ++ U16 v; ++} U16_S; ++typedef struct _U32_S { ++ U32 v; ++} U32_S; ++typedef struct _U64_S { ++ U64 v; ++} U64_S; ++ ++#define A64(x) (((U64_S *)(x))->v) ++#define A32(x) (((U32_S *)(x))->v) ++#define A16(x) (((U16_S *)(x))->v) ++ ++/* ++ * Constants ++ */ ++#define MINMATCH 4 ++ ++#define COPYLENGTH 8 ++#define LASTLITERALS 5 ++ ++#define ML_BITS 4 ++#define ML_MASK ((1U<<ML_BITS)-1) ++#define RUN_BITS (8-ML_BITS) ++#define RUN_MASK ((1U<<RUN_BITS)-1) ++ ++/* ++ * Architecture-specific macros ++ */ ++#if LZ4_ARCH64 ++#define STEPSIZE 8 ++#define UARCH U64 ++#define AARCH A64 ++#define LZ4_COPYSTEP(s, d) A64(d) = A64(s); d += 8; s += 8; ++#define LZ4_COPYPACKET(s, d) LZ4_COPYSTEP(s, d) ++#define LZ4_SECURECOPY(s, d, e) if (d < e) LZ4_WILDCOPY(s, d, e) ++#define HTYPE U32 ++#define INITBASE(base) const BYTE* const base = ip ++#else ++#define STEPSIZE 4 ++#define UARCH U32 ++#define AARCH A32 ++#define LZ4_COPYSTEP(s, d) A32(d) = A32(s); d += 4; s += 4; ++#define LZ4_COPYPACKET(s, d) LZ4_COPYSTEP(s, d); LZ4_COPYSTEP(s, d); ++#define LZ4_SECURECOPY LZ4_WILDCOPY ++#define HTYPE const BYTE* ++#define INITBASE(base) const int base = 0 ++#endif ++ ++#if (defined(LZ4_BIG_ENDIAN) && !defined(BIG_ENDIAN_NATIVE_BUT_INCOMPATIBLE)) ++#define LZ4_READ_LITTLEENDIAN_16(d, s, p) \ ++ { U16 v = A16(p); v = lz4_bswap16(v); d = (s) - v; } ++#define LZ4_WRITE_LITTLEENDIAN_16(p, i) \ ++ { U16 v = (U16)(i); v = lz4_bswap16(v); A16(p) = v; p += 2; } ++#else ++#define LZ4_READ_LITTLEENDIAN_16(d, s, p) { d = (s) - A16(p); } ++#define LZ4_WRITE_LITTLEENDIAN_16(p, v) { A16(p) = v; p += 2; } ++#endif ++ ++/* Macros */ ++#define LZ4_WILDCOPY(s, d, e) do { LZ4_COPYPACKET(s, d) } while (d < e); ++ ++/* Decompression functions */ ++grub_err_t ++lz4_decompress(void *s_start, void *d_start, size_t s_len, size_t d_len); ++ ++grub_err_t ++lz4_decompress(void *s_start, void *d_start, size_t s_len, size_t d_len) ++{ ++ const BYTE *src = s_start; ++ U32 bufsiz = (src[0] << 24) | (src[1] << 16) | (src[2] << 8) | ++ src[3]; ++ ++ /* invalid compressed buffer size encoded at start */ ++ if (bufsiz + 4 > s_len) ++ return grub_error(GRUB_ERR_BAD_FS,"lz4 decompression failed."); ++ ++ /* ++ * Returns 0 on success (decompression function returned non-negative) ++ * and appropriate error on failure (decompression function returned negative). ++ */ ++ return (LZ4_uncompress_unknownOutputSize((char*)s_start + 4, d_start, bufsiz, ++ d_len) < 0)?grub_error(GRUB_ERR_BAD_FS,"lz4 decompression failed."):0; ++} ++ ++static int ++LZ4_uncompress_unknownOutputSize(const char *source, ++ char *dest, int isize, int maxOutputSize) ++{ ++ /* Local Variables */ ++ const BYTE *restrict ip = (const BYTE *) source; ++ const BYTE *const iend = ip + isize; ++ const BYTE *restrict ref; ++ ++ BYTE *restrict op = (BYTE *) dest; ++ BYTE *const oend = op + maxOutputSize; ++ BYTE *cpy; ++ ++ size_t dec[] = { 0, 3, 2, 3, 0, 0, 0, 0 }; ++ ++ /* Main Loop */ ++ while (ip < iend) { ++ BYTE token; ++ int length; ++ ++ /* get runlength */ ++ token = *ip++; ++ if ((length = (token >> ML_BITS)) == RUN_MASK) { ++ int s = 255; ++ while ((ip < iend) && (s == 255)) { ++ s = *ip++; ++ length += s; ++ } ++ } ++ /* copy literals */ ++ cpy = op + length; ++ if ((cpy > oend - COPYLENGTH) || ++ (ip + length > iend - COPYLENGTH)) { ++ if (cpy > oend) ++ /* ++ * Error: request to write beyond destination ++ * buffer. ++ */ ++ goto _output_error; ++ if (ip + length > iend) ++ /* ++ * Error : request to read beyond source ++ * buffer. ++ */ ++ goto _output_error; ++ grub_memcpy(op, ip, length); ++ op += length; ++ ip += length; ++ if (ip < iend) ++ /* Error : LZ4 format violation */ ++ goto _output_error; ++ /* Necessarily EOF, due to parsing restrictions. */ ++ break; ++ } ++ LZ4_WILDCOPY(ip, op, cpy); ++ ip -= (op - cpy); ++ op = cpy; ++ ++ /* get offset */ ++ LZ4_READ_LITTLEENDIAN_16(ref, cpy, ip); ++ ip += 2; ++ if (ref < (BYTE * const) dest) ++ /* ++ * Error: offset creates reference outside of ++ * destination buffer. ++ */ ++ goto _output_error; ++ ++ /* get matchlength */ ++ if ((length = (token & ML_MASK)) == ML_MASK) { ++ while (ip < iend) { ++ int s = *ip++; ++ length += s; ++ if (s == 255) ++ continue; ++ break; ++ } ++ } ++ /* copy repeated sequence */ ++ if unlikely(op - ref < STEPSIZE) { ++#if LZ4_ARCH64 ++ size_t dec2table[] = { 0, 0, 0, -1, 0, 1, 2, 3 }; ++ size_t dec2 = dec2table[op - ref]; ++#else ++ const int dec2 = 0; ++#endif ++ *op++ = *ref++; ++ *op++ = *ref++; ++ *op++ = *ref++; ++ *op++ = *ref++; ++ ref -= dec[op - ref]; ++ A32(op) = A32(ref); ++ op += STEPSIZE - 4; ++ ref -= dec2; ++ } else { ++ LZ4_COPYSTEP(ref, op); ++ } ++ cpy = op + length - (STEPSIZE - 4); ++ if (cpy > oend - COPYLENGTH) { ++ if (cpy > oend) ++ /* ++ * Error: request to write outside of ++ * destination buffer. ++ */ ++ goto _output_error; ++ LZ4_SECURECOPY(ref, op, (oend - COPYLENGTH)); ++ while (op < cpy) ++ *op++ = *ref++; ++ op = cpy; ++ if (op == oend) ++ /* ++ * Check EOF (should never happen, since last ++ * 5 bytes are supposed to be literals). ++ */ ++ break; ++ continue; ++ } ++ LZ4_SECURECOPY(ref, op, cpy); ++ op = cpy; /* correction */ ++ } ++ ++ /* end of decoding */ ++ return (int)(((char *)op) - dest); ++ ++ /* write overflow error detected */ ++ _output_error: ++ return (int)(-(((char *)ip) - source)); ++} +diff --git a/grub-core/fs/zfs/zfsinfo.c b/grub-core/fs/zfs/zfsinfo.c +index fdb587a..c96bf21 100644 +--- a/grub-core/fs/zfs/zfsinfo.c ++++ b/grub-core/fs/zfs/zfsinfo.c +@@ -132,21 +132,31 @@ print_vdev_info (char *nvlist, int tab) + grub_free (path); + return GRUB_ERR_NONE; + } ++ char is_mirror=(grub_strcmp(type,VDEV_TYPE_MIRROR) == 0); ++ char is_raidz=(grub_strcmp(type,VDEV_TYPE_RAIDZ) == 0); + +- if (grub_strcmp (type, VDEV_TYPE_MIRROR) == 0) ++ if (is_mirror || is_raidz) + { + int nelm, i; + + nelm = grub_zfs_nvlist_lookup_nvlist_array_get_nelm + (nvlist, ZPOOL_CONFIG_CHILDREN); + ++ if(is_mirror){ ++ grub_puts_ (N_("This VDEV is a mirror")); ++ } ++ else if(is_raidz){ ++ grub_uint64_t parity; ++ grub_zfs_nvlist_lookup_uint64(nvlist,"nparity",&parity); ++ grub_printf_ (N_("This VDEV is a RAIDZ%llu\n"),(unsigned long long)parity); ++ } + print_tabs (tab); + if (nelm <= 0) + { +- grub_puts_ (N_("Incorrect mirror")); ++ grub_puts_ (N_("Incorrect VDEV")); + return GRUB_ERR_NONE; + } +- grub_printf_ (N_("Mirror with %d children\n"), nelm); ++ grub_printf_ (N_("VDEV with %d children\n"), nelm); + print_state (nvlist, tab); + for (i = 0; i < nelm; i++) + { +@@ -162,14 +172,14 @@ print_vdev_info (char *nvlist, int tab) + total element number. And the number itself is fine, + only the element isn't. + */ +- grub_printf_ (N_("Mirror element number %d isn't correct\n"), i); ++ grub_printf_ (N_("VDEV element number %d isn't correct\n"), i); + continue; + } + + /* TRANSLATORS: it's the element carying the number %d, not + total element number. This is used in enumeration + "Element number 1", "Element number 2", ... */ +- grub_printf_ (N_("Mirror element number %d:\n"), i); ++ grub_printf_ (N_("VDEV element number %d:\n"), i); + print_vdev_info (child, tab + 1); + + grub_free (child); +diff --git a/include/grub/zfs/dmu.h b/include/grub/zfs/dmu.h +index 8fc6dc5..4ad616c 100644 +--- a/include/grub/zfs/dmu.h ++++ b/include/grub/zfs/dmu.h +@@ -22,6 +22,39 @@ + + #ifndef _SYS_DMU_H + #define _SYS_DMU_H ++#define B_FALSE 0 ++#define B_TRUE 1 ++ ++#define DMU_OT_NEWTYPE 0x80 ++#define DMU_OT_METADATA 0x40 ++#define DMU_OT_BYTESWAP_MASK 0x3f ++ ++#define DMU_OT(byteswap, metadata) \ ++ (DMU_OT_NEWTYPE | \ ++ ((metadata) ? DMU_OT_METADATA : 0) | \ ++ ((byteswap) & DMU_OT_BYTESWAP_MASK)) ++ ++#define DMU_OT_IS_VALID(ot) (((ot) & DMU_OT_NEWTYPE) ? \ ++ ((ot) & DMU_OT_BYTESWAP_MASK) < DMU_BSWAP_NUMFUNCS : \ ++ (ot) < DMU_OT_NUMTYPES) ++ ++#define DMU_OT_IS_METADATA(ot) (((ot) & DMU_OT_NEWTYPE) ? \ ++ ((ot) & DMU_OT_METADATA) : \ ++ dmu_ot[(ot)].ot_metadata) ++ ++typedef enum dmu_object_byteswap { ++ DMU_BSWAP_UINT8, ++ DMU_BSWAP_UINT16, ++ DMU_BSWAP_UINT32, ++ DMU_BSWAP_UINT64, ++ DMU_BSWAP_ZAP, ++ DMU_BSWAP_DNODE, ++ DMU_BSWAP_OBJSET, ++ DMU_BSWAP_ZNODE, ++ DMU_BSWAP_OLDACL, ++ DMU_BSWAP_ACL, ++ DMU_BSWAP_NUMFUNCS ++} dmu_object_byteswap_t; + + /* + * This file describes the interface that the DMU provides for its +@@ -89,7 +122,17 @@ typedef enum dmu_object_type { + DMU_OT_SA_ATTR_REGISTRATION, /* ZAP */ + DMU_OT_SA_ATTR_LAYOUTS, /* ZAP */ + DMU_OT_DSL_KEYCHAIN = 54, +- DMU_OT_NUMTYPES ++ DMU_OT_NUMTYPES, ++ DMU_OTN_UINT8_DATA = DMU_OT(DMU_BSWAP_UINT8, B_FALSE), ++ DMU_OTN_UINT8_METADATA = DMU_OT(DMU_BSWAP_UINT8, B_TRUE), ++ DMU_OTN_UINT16_DATA = DMU_OT(DMU_BSWAP_UINT16, B_FALSE), ++ DMU_OTN_UINT16_METADATA = DMU_OT(DMU_BSWAP_UINT16, B_TRUE), ++ DMU_OTN_UINT32_DATA = DMU_OT(DMU_BSWAP_UINT32, B_FALSE), ++ DMU_OTN_UINT32_METADATA = DMU_OT(DMU_BSWAP_UINT32, B_TRUE), ++ DMU_OTN_UINT64_DATA = DMU_OT(DMU_BSWAP_UINT64, B_FALSE), ++ DMU_OTN_UINT64_METADATA = DMU_OT(DMU_BSWAP_UINT64, B_TRUE), ++ DMU_OTN_ZAP_DATA = DMU_OT(DMU_BSWAP_ZAP, B_FALSE), ++ DMU_OTN_ZAP_METADATA = DMU_OT(DMU_BSWAP_ZAP, B_TRUE), + } dmu_object_type_t; + + typedef enum dmu_objset_type { +@@ -116,5 +159,6 @@ typedef enum dmu_objset_type { + #define DMU_POOL_HISTORY "history" + #define DMU_POOL_PROPS "pool_props" + #define DMU_POOL_L2CACHE "l2cache" ++#define DMU_POOL_FEATURES_FOR_READ "features_for_read" + + #endif /* _SYS_DMU_H */ +diff --git a/include/grub/zfs/zfs.h b/include/grub/zfs/zfs.h +index e326c8b..761ade7 100644 +--- a/include/grub/zfs/zfs.h ++++ b/include/grub/zfs/zfs.h +@@ -36,8 +36,13 @@ typedef enum grub_zfs_endian + /* + * On-disk version number. + */ +-#define SPA_VERSION 33ULL +- ++#define SPA_VERSION_INITIAL 1ULL ++#define SPA_VERSION_BEFORE_FEATURES 33ULL ++#define SPA_VERSION 5000ULL ++#define SPA_VERSION_FEATURES 5000ULL ++#define SPA_VERSION_IS_SUPPORTED(v) \ ++ (((v) >= SPA_VERSION_INITIAL && (v) <= SPA_VERSION_BEFORE_FEATURES) || \ ++ ((v) >= SPA_VERSION_FEATURES && (v) <= SPA_VERSION)) + /* + * The following are configuration names used in the nvlist describing a pool's + * configuration. +@@ -76,6 +81,7 @@ typedef enum grub_zfs_endian + #define ZPOOL_CONFIG_DDT_HISTOGRAM "ddt_histogram" + #define ZPOOL_CONFIG_DDT_OBJ_STATS "ddt_object_stats" + #define ZPOOL_CONFIG_DDT_STATS "ddt_stats" ++#define ZPOOL_CONFIG_FEATURES_FOR_READ "features_for_read" + /* + * 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 +diff --git a/include/grub/zfs/zio.h b/include/grub/zfs/zio.h +index b1c46da..8fad2cc 100644 +--- a/include/grub/zfs/zio.h ++++ b/include/grub/zfs/zio.h +@@ -88,6 +88,7 @@ enum zio_compress { + ZIO_COMPRESS_GZIP8, + ZIO_COMPRESS_GZIP9, + ZIO_COMPRESS_ZLE, ++ ZIO_COMPRESS_LZ4, + ZIO_COMPRESS_FUNCTIONS + }; + +diff --git a/po/POTFILES.in b/po/POTFILES.in +index 987b37a..c55d9e3 100644 +--- a/po/POTFILES.in ++++ b/po/POTFILES.in +@@ -173,6 +173,7 @@ + ./grub-core/fs/zfs/zfs_fletcher.c + ./grub-core/fs/zfs/zfsinfo.c + ./grub-core/fs/zfs/zfs_lzjb.c ++./grub-core/fs/zfs/zfs_lz4.c + ./grub-core/fs/zfs/zfs_sha256.c + ./grub-core/gdb/cstub.c + ./grub-core/gdb/gdb.c |