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Author SHA1 Message Date
Eric Biggers
4aaa6b639d Allow GRUB to mount ext2/3/4 filesystems that have the encryption feature. 
On such a filesystem, inodes may have EXT4_ENCRYPT_FLAG set.
For a regular file, this means its contents are encrypted; for a
directory, this means the filenames in its directory entries are
encrypted; and for a symlink, this means its target is encrypted.  Since
GRUB cannot decrypt encrypted contents or filenames, just issue an error
if it would need to do so.  This is sufficient to allow unencrypted boot
files to co-exist with encrypted files elsewhere on the filesystem.

(Note that encrypted regular files and symlinks will not normally be
encountered outside an encrypted directory; however, it's possible via
hard links, so they still need to be handled.)

Tested by booting from an ext4 /boot partition on which I had run
'tune2fs -O encrypt'.  I also verified that the expected error messages
are printed when trying to access encrypted directories, files, and
symlinks from the GRUB command line.  Also ran 'sudo ./grub-fs-tester
ext4_encrypt'; note that this requires e2fsprogs v1.43+ and Linux v4.1+.

Signed-off-by: Eric Biggers <ebiggers@google.com>
 2020-09-21 11:32:45 -04:00
Vladimir Serbinenko
54e7dbbcb9 grub_ext2_read_block: Fix return type on error. 2015-07-16 10:59:33 +02:00
Vladimir Serbinenko
5537a586e0 ext2: Ignore INCOMPAT_MMP. 
It's not really incompatible as long as driver never writes to FS.
 2015-02-16 21:08:37 +01:00
Vladimir Serbinenko
e20aa39ea4 ext2: Support META_BG. 
This fixes bug that system would become unbootable after ext*
online resize if no resize_inode was created at ext* format time.
 2015-02-16 20:53:26 +01:00
Vladimir Serbinenko
47cd2645dd * grub-core/fs/ext2.c (grub_ext2_mount): Additional checks for superblock validity. 2015-01-21 17:42:11 +01:00
Peter Nelson
58f66137a3 * grub-core/fs/ext2.c (grub_ext2_read_block): Support large sparse chunks. 2014-12-07 17:57:49 +01:00
Colin Watson
5da5517288 * grub-core/fs/ext2.c (grub_ext2_read_block): Factor out common code for indirect block handling. 
Saves 185 bytes on compressed image.
 2013-11-14 08:13:06 +00:00
Vladimir Serbinenko
ac8cac1dac * grub-core/fs/ext2.c: Remove variable length arrays. 2013-11-12 03:04:19 +01:00
Vladimir Serbinenko
eb03ede014 * grub-core/fs/ext2.c (grub_ext2_read_symlink): Use memcpy rather 
strncpy.
	* grub-core/fs/jfs.c (grub_jfs_lookup_symlink): Likewise.
	* grub-core/kern/misc.c (grub_strncpy): Move from here ...
	* include/grub/misc.h (grub_strncpy): ... to here. Make inline.
	* grub-core/net/net.c (grub_net_addr_to_str): Use COMPILE_TIME_ASSERT
	+ strcpy rather than strncpy.
 2013-11-01 18:44:46 +01:00
Vladimir Serbinenko
6673d8e7b6 * grub-core/fs/ext2.c (EXT2_BLOCK_SIZE): Make unsigned. 2013-10-25 18:03:36 +02:00
Colin Watson
4eb8b75659 Remove nested functions from disk and file read hooks. 
* include/grub/disk.h (grub_disk_read_hook_t): New type.
	(struct grub_disk): Add read_hook_data member.
	* include/grub/file.h (struct grub_file): Likewise.
	* include/grub/fshelp.h (grub_fshelp_read_file): Add read_hook_data
	argument.

	Update all callers.
 2013-02-27 17:19:15 +01:00
Colin Watson
fc524edf65 Remove nested functions from filesystem directory iterators. 
* include/grub/fs.h (grub_fs_dir_hook_t): New type.
(struct grub_fs.dir): Add hook_data argument.

Update all implementations and callers.
 2013-01-21 01:33:46 +00:00
Vladimir 'phcoder' Serbinenko
f797ec85a0 * grub-core/fs/ext2.c (grub_ext2_read_block): Use shifts rather than 
divisions.
 2013-01-05 18:37:34 +01:00
Vladimir 'phcoder' Serbinenko
073b57bb8e * grub-core/fs/ext2.c: Experimental support for 64-bit. 2012-07-02 11:28:42 +02:00
Vladimir 'phcoder' Serbinenko
2e57f28fc7 * grub-core/fs/bfs.c (mount): Improve filesystem detection reliability. 
* grub-core/fs/ext2.c (grub_ext2_mount): Likewise.
	* grub-core/fs/hfs.c (grub_hfs_mount): Likewise.
	* grub-core/fs/hfsplus.c (grub_hfsplus_mount): Likewise.
	* grub-core/fs/jfs.c (grub_jfs_mount): Likewise.
	* grub-core/fs/minix.c (grub_minix_mount): Likewise.
	* grub-core/fs/ntfs.c (grub_ntfs_mount): Likewise.
	* grub-core/fs/romfs.c (grub_romfs_mount): Likewise.
	* grub-core/fs/xfs.c (grub_xfs_mount): Likewise.
 2012-05-12 13:31:05 +02:00
Vladimir 'phcoder' Serbinenko
f417ed0432 Fix wrapped HFS+ handling. 
* grub-core/fs/fshelp.c (grub_fshelp_read_file): New argument
	blocks_start. All users updated.
	* grub-core/fs/hfsplus.c (grub_hfsplus_read_block): Don't add
	wrapping offset.
	(grub_hfsplus_read_file): Pass embedding offset to fshelp_read_file.
 2012-05-09 13:02:59 +02:00
Vladimir 'phcoder' Serbinenko
e1e49678b9 * util/grub-install.in: Clarify strings. 
Fix source dir check.
 2012-02-27 21:36:58 +01:00
Vladimir 'phcoder' Serbinenko
10476bb0db * grub-core/fs/ext2.c (grub_ext2_label): Fix field size. Change to 
sizeof while on it.
 2012-01-31 22:12:57 +01:00
Vladimir 'phcoder' Serbinenko
80662dbc5d * grub-core/fs/ext2.c (grub_ext2_iterate_dir): Ignore entries with 
direct.inode = 0.
 2012-01-14 11:55:20 +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
812e249302 * grub-core/fs/ext2.c (grub_ext4_find_leaf): MAke buf as pointer to 
properly aligned memory.
	(grub_ext2_read_block): Ensure buffer alignment.
 2011-12-13 01:58:35 +01:00
Vladimir 'phcoder' Serbinenko
e745cf0ca6 Implement automatic module license checking according to new GNU 
guidelines.

	* grub-core/kern/dl.c (grub_dl_check_license): New function.
	(grub_dl_load_core): Use grub_dl_check_license.
	* include/grub/dl.h (GRUB_MOD_SECTION): New macro.
	(GRUB_MOD_LICENSE): Likewise.
	(GRUB_MOD_DUAL_LICENSE): Likewise.
	All modules updated.
 2011-04-11 23:01:51 +02:00
Vladimir 'phcoder' Serbinenko
d2e29d81a9 * grub-core/fs/ext2.c (grub_ext2_read_inode): Fix an overflow. 
Reported and tested by: Timothy Nikkel.
 2011-03-29 10:56:14 +02:00
Vladimir 'phcoder' Serbinenko
58c184be7b Support big ext2 files. 
* grub-core/fs/ext2.c (grub_ext2_inode): Rename dir_acl to size_high.
	(grub_ext2_read_block): Support triple indirect blocks.
	(grub_ext2_read_file): Use 64-bit types and read size_high.
	(grub_ext2_open): Read size_high.
	Reported by: Ximin Luo.
	Tested by: Manoel Rebelo Abranches.
 2010-11-13 16:11:24 +01:00
Vladimir 'phcoder' Serbinenko
d2ea455141 * grub-core/partmap/sun.c (sun_partition_map_iterate): Don't needlesly 
allocate p.
 2010-09-14 21:07:39 +02:00
BVK Chaitanya
8c41176882 automake commit without merge history 2010-05-06 11:34:04 +05:30
Renamed from fs/ext2.c (Browse further)