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Author SHA1 Message Date
Michael Chang
68006d1732 zfs: Fix gcc10 error -Werror=zero-length-bounds 
We bumped into the build error while testing gcc-10 pre-release.

In file included from ../../include/grub/file.h:22,
		from ../../grub-core/fs/zfs/zfs.c:34:
../../grub-core/fs/zfs/zfs.c: In function 'zap_leaf_lookup':
../../grub-core/fs/zfs/zfs.c:2263:44: error: array subscript '<unknown>' is outside the bounds of an interior zero-length array 'grub_uint16_t[0]' {aka 'short unsigned int[0]'} [-Werror=zero-length-bounds]
2263 |   for (chunk = grub_zfs_to_cpu16 (l->l_hash[LEAF_HASH (blksft, h, l)], endian);
../../include/grub/types.h:241:48: note: in definition of macro 'grub_le_to_cpu16'
 241 | # define grub_le_to_cpu16(x) ((grub_uint16_t) (x))
     |                                                ^
../../grub-core/fs/zfs/zfs.c:2263:16: note: in expansion of macro 'grub_zfs_to_cpu16'
2263 |   for (chunk = grub_zfs_to_cpu16 (l->l_hash[LEAF_HASH (blksft, h, l)], endian);
     |                ^~~~~~~~~~~~~~~~~
In file included from ../../grub-core/fs/zfs/zfs.c:48:
../../include/grub/zfs/zap_leaf.h:72:16: note: while referencing 'l_hash'
  72 |  grub_uint16_t l_hash[0];
     |                ^~~~~~

Here I'd like to quote from the gcc document [1] which seems best to
explain what is going on here.

"Although the size of a zero-length array is zero, an array member of
this kind may increase the size of the enclosing type as a result of
tail padding. The offset of a zero-length array member from the
beginning of the enclosing structure is the same as the offset of an
array with one or more elements of the same type. The alignment of a
zero-length array is the same as the alignment of its elements.

Declaring zero-length arrays in other contexts, including as interior
members of structure objects or as non-member objects, is discouraged.
Accessing elements of zero-length arrays declared in such contexts is
undefined and may be diagnosed."

The l_hash[0] is apparnetly an interior member to the enclosed structure
while l_entries[0] is the trailing member. And the offending code tries
to access members in l_hash[0] array that triggers the diagnose.

Given that the l_entries[0] is used to get proper alignment to access
leaf chunks, we can accomplish the same thing through the ALIGN_UP macro
thus eliminating l_entries[0] from the structure. In this way we can
pacify the warning as l_hash[0] now becomes the last member to the
enclosed structure.

[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html

Signed-off-by: Michael Chang <mchang@suse.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
 2020-03-31 12:17:03 +02:00
Toomas Soome
4a7ea4003b zfs: com.delphix:embedded_data feature support 2015-05-03 18:45:40 +03:00
Toomas Soome
a1007c6af2 zfs: com.delphix:hole_birth feature support 
In the past birth was always zero for holes. This feature started
to make use of birth for holes as well, so change code to test for
valid DVA address instead.
 2015-05-03 18:11:29 +03:00
Vladimir Serbinenko
7e47e27bd8 Add gcc_struct to all packed structures when compiling with mingw. 
Just "packed" doesn't always pack the way we expect.
 2013-12-15 14:14:30 +01:00
Vladimir Serbinenko
bed78ef4e6 Revert "Attempts at ZFS options" 
It was accidently committed to wrong branch

This reverts commit 0ee5cdfe9f.
 2013-11-03 16:52:33 +01:00
Vladimir Serbinenko
0ee5cdfe9f Attempts at ZFS options 2013-11-03 16:40:32 +01:00
Vladimir 'phcoder' Serbinenko
3cd910a212 * grub-core/disk/ldm.c: Rename variables and arguments to prevent 
shadowing.
	* grub-core/kern/disk.c: Likewise.
	* grub-core/kern/misc.c: Likewise.
	* include/grub/parser.h: Likewise.
	* include/grub/script_sh.h: Likewise.
	* include/grub/zfs/zfs.h: Likewise.
 2013-10-18 16:54:57 +02:00
Vladimir 'phcoder' Serbinenko
bdb5ba47d8 * include/grub/zfs/spa.h (zio_cksum): Add explicit members for mac. 
* grub-core/fs/zfs/zfs.c (zio_read): Don't use casts to retrieve mac.
 2013-08-22 16:20:32 +02:00
Massimo Maggi
038016f48a * grub-core/fs/zfs/zfs_lz4.c: New file. 
* grub-core/fs/zfs/zfs.c: Tie up lz4 decompression.
 2013-07-14 14:12:58 +02:00
Massimo Maggi
776bdce291 * grub-core/fs/zfs/zfs.c: Check for feature compatibility. 2013-07-14 14:10:42 +02:00
Massimo Maggi
c71dbd40a9 * grub-core/fs/zfs/zfs.c (uberblock_verify): Accept version 5000. 
(check_pool_label): Likewise.
	* include/grub/zfs/zfs.h: Rewrite SPA_VERSION_* macros.
 2013-07-14 14:01:27 +02:00
Vladimir 'phcoder' Serbinenko
74310bd8a7 * include/grub/zfs/dnode.h (DN_MIN_INDBLKSHIFT): Removed. 2012-01-29 18:56:44 +01:00
Vladimir 'phcoder' Serbinenko
75b49ebed9 Remove defines pertaining to arbitrary limits not affecting GRUB 
anymore.

	* grub-core/fs/ext2.c (EXT2_PATH_MAX): Removed.
	(EXT2_MAX_SYMLINKCNT): Likewise.
	* grub-core/fs/nilfs2.c (NILFS_BTREE_LEVEL_MAX): Likewise.
	* grub-core/net/tftp.c (TFTP_MAX_PACKET): Likewise.
	* include/grub/i386/pc/pxe.h (GRUB_PXE_MIN_BLKSIZE): Likewise.
	(GRUB_PXE_MAX_BLKSIZE): Likewise.
	* include/grub/normal.h (GRUB_MAX_CMDLINE): Likewise.
	* include/grub/zfs/dnode.h (DN_MAX_INDBLKSHIFT): Likewise.
	(DN_MAX_OBJECT_SHIFT): Likewise.
	(DN_MAX_OFFSET_SHIFT): Likewise.
	(DN_MAX_OBJECT): Likewise.
	(DNODES_PER_LEVEL_SHIFT): Likewise.
	* include/grub/zfs/spa.h (SPA_MAXBLOCKSHIFT): Likewise.
	(SPA_MAXBLOCKSIZE): Likewise.
	(SPA_BLOCKSIZES): Likewise.
	* include/grub/zfs/zap_impl.h (MZAP_MAX_BLKSHIFT): Likewise.
	(MZAP_MAX_BLKSZ): Likewise.
 2012-01-14 11:30:43 +01:00
Vladimir 'phcoder' Serbinenko
fcd232b74e * grub-core/fs/zfs/zfs.c (DVA_OFFSET_TO_PHYS_SECTOR): Make into inline 
function.
	(ZAP_HASH_IDX): Likewise.
	(ZAP_LEAF_HASH_SHIFT): Likewise.
	(ZAP_LEAF_HASH_NUMENTRIES): Likewise.
	(LEAF_HASH): Likewise.
	(ZAP_LEAF_NUMCHUNKS): Likewise.
	(ZAP_LEAF_CHUNK): Likewise. Changed pointer arithmetic to preserve
	alignment invariants. Return pointer. All users updated.
	(ZAP_LEAF_ENTRY): Make into inline function.
	(NBBY): Removed.
	(xor): LIkewise.
	(xor_out): Use grub_crypto_xor.
	(dnode_get_path): Use grub_get_unaligned.
	(nvlist_find_value): Likewise.
	(grub_zfs_nvlist_lookup_uint64): Likewise.
	(grub_zfs_nvlist_lookup_string): Likewise.
	(get_nvlist_size): Likewise.
	(grub_zfs_open): Likewise.
	(fill_fs_info): Likewise.
	(grub_zfs_dir): Likewise.
	* include/grub/zfs/zap_leaf.h (zap_leaf_phys): Adapt to preserve
	alignment invariants.
	* include/grub/zfs/zio.h (zio_eck_t): Mark as packed as it's not
	necessarily aligned.
 2011-12-13 11:33:02 +01:00
Vladimir 'phcoder' Serbinenko
bf3a385792 Add missing const qualifiers. 
* grub-core/commands/i386/pc/sendkey.c (keysym): Add missing const.
	* grub-core/commands/lspci.c (grub_pci_classname): Likewise.
	* grub-core/commands/menuentry.c (hotkey_aliases): Likewise.
	* grub-core/disk/lvm.c (grub_lvm_getvalue): Likewise.
	(grub_lvm_check_flag): Likewise.
	* grub-core/efiemu/i386/coredetect.c
	(grub_efiemu_get_default_core_name): Likewise
	* grub-core/efiemu/main.c (grub_efiemu_autocore): Likewise.
	* grub-core/fs/hfsplus.c (grub_hfsplus_catkey_internal): Likewise.
	* grub-core/fs/ntfs.c (fixup): Likewise.
	* grub-core/fs/xfs.c (grub_xfs_iterate_dir): Likewise.
	* grub-core/fs/zfs/zfs.c (decomp_entry): Likewise.
	(fzap_lookup): Likewise.
	(zap_lookup): Likewise.
	* grub-core/gnulib/regcomp.c (init_dfa): Likewise.
	* grub-core/lib/legacy_parse.c (check_option): Likewise.
	* grub-core/lib/posix_wrap/langinfo.h (nl_langinfo): Likewise.
	* grub-core/loader/i386/bsd.c (grub_bsd_add_meta): Likewise.
	(grub_freebsd_add_meta_module): Likewise.
	(grub_cmd_freebsd_module): Likewise.
	* grub-core/loader/i386/xnu.c (tbl_alias): Likewise.
	* grub-core/loader/xnu.c (grub_xnu_register_memory): Likewise.
	(grub_xnu_writetree_get_size): Likewise.
	(grub_xnu_writetree_toheap_real): Likewise.
	(grub_xnu_find_key): Likewise.
	(grub_xnu_create_key): Likewise.
	(grub_xnu_create_value): Likewise.
	(grub_xnu_register_memory): Likewise.
	(grub_xnu_check_os_bundle_required): Likewise.
	(grub_xnu_scan_dir_for_kexts): Likewise.
	(grub_xnu_load_kext_from_dir): Likewise.
	* grub-core/normal/color.c (color_list): Likewise.
	* grub-core/normal/completion.c (current_word): Likewise.
	* grub-core/normal/menu_entry.c (insert_string): Likewise.
	* grub-core/term/serial.c (grub_serial_find): Likewise.
	* grub-core/term/tparm.c (grub_terminfo_tparm): Likewise.
	* include/grub/efiemu/efiemu.h (grub_efiemu_get_default_core_name):
	Likewise.
	* include/grub/i386/bsd.h (grub_bsd_add_meta): Likewise.
	(grub_freebsd_add_meta_module): Likewise.
	* include/grub/lib/arg.h (grub_arg_option): Likewise.
	* include/grub/net.h (grub_net_card_driver): Likewise.
	(grub_net_card): Likewise.
	(grub_net_app_protocol): Likewise.
	* include/grub/parttool.h (grub_parttool_argdesc): Likewise.
	* include/grub/serial.h (grub_serial_find): Likewise.
	* include/grub/tparm.h (grub_terminfo_tparm): Likewise.
	* include/grub/xnu.h (grub_xnu_create_key): Likewise.
	(grub_xnu_create_value): Likewise.
	(grub_xnu_find_key): Likewise.
	(grub_xnu_scan_dir_for_kexts): Likewise.
	(grub_xnu_load_kext_from_dir): Likewise.

	* include/grub/zfs/zio_checksum.h (zio_checksum_t): Moved from here ...
	* grub-core/fs/zfs/zfs.c (zio_checksum_t): ...here.
	* include/grub/zfs/zio_checksum.h (zio_checksum_info):
	Moved from here ...
	* grub-core/fs/zfs/zfs.c (zio_checksum_info): ... here. Added missing const.
 2011-11-30 16:20:13 +01:00
Vladimir 'phcoder' Serbinenko
bc1de0bc26 GCM support 2011-11-06 21:05:25 +01:00
Vladimir 'phcoder' Serbinenko
ed746949af ZFS passphrase support 2011-11-06 16:30:52 +01:00
Vladimir 'phcoder' Serbinenko
f003a8c5e7 Move ZFS crypto to separate module 2011-11-06 15:18:25 +01:00
Vladimir 'phcoder' Serbinenko
2cdc899567 ZFS crypto key adding 2011-11-06 14:44:29 +01:00
Vladimir 'phcoder' Serbinenko
1bc7cc1b4d First part of zfs-crypto. CCM support with 0-filled keys 2011-11-06 13:18:27 +01:00
Vladimir 'phcoder' Serbinenko
b632b404e0 Support zle compression on ZFS. 
* grub-core/fs/zfs/zfs.c (zle_decompress): New function.
	(decomp_table): Add zle.
	* include/grub/zfs/zio.h (zio_compress): Add zle.
 2011-11-05 14:50:53 +01:00
Vladimir 'phcoder' Serbinenko
34c5965451 Support version 33 including symlinks 2011-10-27 02:04:04 +02:00
Vladimir 'phcoder' Serbinenko
a562fbb48b Bump spa version 2011-10-26 19:11:10 +02:00
Vladimir 'phcoder' Serbinenko
8ff84951c5 ZFS mirror support 2010-12-06 02:31:22 +01:00
Vladimir 'phcoder' Serbinenko
fe79a8ad9d Fix fzap handling 2010-12-05 15:35:08 +01:00
Vladimir 'phcoder' Serbinenko
7a6e93788c ZFS zlib compression support 2010-12-04 00:40:44 +01:00
Robert Millan
54207d4b6c Update GPL for ZFS code to version 3, move copyright lines for Vladimir and me to FSF (covered by our assignments) 2010-12-01 22:55:26 +01:00
Robert Millan
bf78d5b251 2010-12-01 Robert Millan <rmh@gnu.org> 
* grub-core/fs/zfs/zfs.c: New file.
	* grub-core/fs/zfs/zfs_fletcher.c: Likewise.
	* grub-core/fs/zfs/zfs_lzjb.c: Likewise.
	* grub-core/fs/zfs/zfs_sha256.c: Likewise.
	* grub-core/fs/zfs/zfsinfo.c: Likewise.
	
	* include/grub/zfs/dmu.h: Likewise.
	* include/grub/zfs/dmu_objset.h: Likewise.
	* include/grub/zfs/dnode.h: Likewise.
	* include/grub/zfs/dsl_dataset.h: Likewise.
	* include/grub/zfs/dsl_dir.h: Likewise.
	* include/grub/zfs/sa_impl.h: Likewise.
	* include/grub/zfs/spa.h: Likewise.
	* include/grub/zfs/uberblock_impl.h: Likewise.
	* include/grub/zfs/vdev_impl.h: Likewise.
	* include/grub/zfs/zap_impl.h: Likewise.
	* include/grub/zfs/zap_leaf.h: Likewise.
	* include/grub/zfs/zfs.h: Likewise.
	* include/grub/zfs/zfs_acl.h: Likewise.
	* include/grub/zfs/zfs_znode.h: Likewise.
	* include/grub/zfs/zil.h: Likewise.
	* include/grub/zfs/zio.h: Likewise.
	* include/grub/zfs/zio_checksum.h: Likewise.
	
	* Makefile.util.def: Build ZFS into libgrubmods.
	* grub-core/Makefile.core.def: Build zfs.mod.
 2010-12-01 22:42:11 +01:00