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Author SHA1 Message Date
Andrei Borzenkov
951306c509 squash4: fix handling of fragments and sparse files 
1. Do not assume block list and fragment are mutually exclusive. Squash
can pack file tail as fragment (unless -no-fragments is specified); so
check read offset and read either from block list or from fragments as
appropriate.

2. Support sparse files with zero blocks.

3. Fix fragment read - frag.offset is absolute fragment position,
not offset relative to ino.chunk.

Reported and tested by Carlo Caione <carlo@endlessm.com>
 2017-02-24 19:10:43 +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
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
20dd511c8c Handle "." and ".." on squashfs. 
* grub-core/fs/squash4.c (grub_fshelp_node): New field stsize.
	Make inode numbers into stack.
	(grub_squash_read_symlink): Use stack.
	(grub_squash_iterate_dir): Use stack. Create "." and ".." nodes.
	(make_root_node): Fill stack.
	(grub_squash_open): Use stack.
 2012-05-27 13:44:48 +02:00
Vladimir 'phcoder' Serbinenko
4cf6be1bd9 * grub-core/fs/squash4.c (grub_squash_read_data): Add missing byte-swap. 2012-05-22 08:38:17 +02:00
Vladimir 'phcoder' Serbinenko
6f5d5ee865 * grub-core/fs/squash4.c (grub_squash_inode): Fix offset field. 
(grub_squash_read_data): Fix offset byte-swapping.
 2012-05-04 17:13:24 +02:00
Vladimir 'phcoder' Serbinenko
b282dfe5ac * grub-core/fs/squash4.c (lzo_decompress): Set grub_errno on error. 
Allocate at lest 8192 for temporary buffer as required for lzo.
 2012-04-26 01:16:25 +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
22965bce9b * grub-core/fs/squash4.c (direct_read): Rename read to curread to 
avoid shadowing.
 2012-02-10 12:17:40 +01:00
Vladimir 'phcoder' Serbinenko
f6e4ea709f * grub-core/fs/squash4.c (xz_decompress): Fix return value. 
(direct_read): Use correct compressed size.
	(grub_squash_read_data): Likewise.
 2012-01-27 13:09:57 +01:00
Vladimir 'phcoder' Serbinenko
ff094b9b57 * grub-core/fs/squash4.c (squash_mount): Mark endian conversion in 
case statements as compile-time one.
	(direct_read): Prevent spurious warnings.
	(grub_squash_read_data): Likewise.
 2012-01-11 12:46:50 +01:00
Vladimir 'phcoder' Serbinenko
c029da8a89 Various squash4 fixes and LZO and XZ support. 
* Makefile.util.def (libgrubmods.a): Add xzembed directory to cppflags.
	Add xzembed source files.
	* grub-core/Makefile.core.def (squash4): Add xzembed and minilzo flags.
	* grub-core/fs/squash4.c (grub_squash_super): New field compression.
	(grub_squash_inode): New subtype long_dir.
	(SQUASH_TYPE_LONG_DIR): New inode type.
	(COMPRESSION): New enum.
	(XZBUFSIZ): New const.
	(grub_squash_data): New fields blksz, decompress, xzdec, xzbuf.
	(read_chunk): Use data->decompress.
	(zlib_decompress): New function.
	(lzo_decompress): Likewise.
	(xz_decompress): Likewise.
	(squash_mount): Set new data fields.
	(grub_squash_iterate_dir): Handle long dir.
	(squash_unmount): Free xzdec and xzbuf.
	(grub_squash_open): Check ino type.
	(direct_read): Stylistic fixes. Use data->decompress.
	(grub_squash_read_data): Likewise.
	* grub-core/io/gzio.c (grub_gzio): Remove disk_input.
	(get_byte): Likewise.
	(grub_zlib_disk_read): Removed.
	* grub-core/lib/posix_wrap/sys/types.h (ssize_t): New type.
	(GRUB_POSIX_BOOL_DEFINED): New define.
	* grub-core/lib/posix_wrap/unistd.h: Include sys/types.h.
	* grub-core/lib/xzembed/xz.h: Addmissing includes.
	[!GRUB_POSIX_BOOL_DEFINED]: Define bool.
	* include/grub/deflate.h (grub_zlib_disk_read): Removed.
 2011-12-26 13:18:01 +01:00
Vladimir 'phcoder' Serbinenko
efc2616ee1 * grub-core/fs/squash4.c (grub_squash_inode): Fix field sizes. 
(grub_squash_dirent_header): Likewise.
	(read_chunk): Don't double swap.
	(grub_squash_iterate_dir): Fix swap sizes.
 2011-12-13 23:14:25 +01:00
Vladimir 'phcoder' Serbinenko
8a5a3a5b5a Fix several memory leaks. 
* grub-core/fs/btrfs.c (grub_btrfs_dir): Fix memory leak.
	* grub-core/fs/cpio.c (grub_cpio_find_file): Likewise.
	(grub_cpio_dir): Likewise.
	* grub-core/fs/fat.c (grub_fat_label): Likewise.
	* grub-core/fs/jfs.c (grub_jfs_label): Likewise.
	* grub-core/fs/romfs.c (grub_romfs_close): Likewise.
	(grub_romfs_label): Likewise.
	* grub-core/fs/squash4.c (squash_mount): Use zalloc for safety.
	(squash_unmount): New function.
	(grub_squash_dir): Fix memory leak.
	(grub_squash_open): Likewise.
	(grub_squash_read): Likewise.
	(grub_squash_mtime): Likewise.
	* grub-core/fs/xfs.c (grub_xfs_open): Likewise.
	* grub-core/fs/zfs/zfs.c (check_pool_label): Likewise.
	* util/grub-fstest.c (fstest): Likewise.
 2011-11-09 15:01:58 +01:00
Vladimir 'phcoder' Serbinenko
ed9ba06dd0 Use shifts in squash4. 
* grub-core/fs/squash4.c (grub_squash_data): New field log2_blksz.
	(squash_mount): Check block size and take logarithm.
	(direct_read): Use shifts.
 2011-10-28 16:05:16 +02:00
Vladimir 'phcoder' Serbinenko
9f12e664cc Fix handling of uncompressed blocks on squashfs and break 4G limit. 
* grub-core/fs/squash4.c (grub_squash_super): Add block_size. Remove
	unused flags.
	(grub_squash_inode): Add long_file and block_size.
	(grub_squash_cache_inode): New struct.
	(grub_squash_dirent): Make types into enum.
	(SQUASH_TYPE_LONG_REGULAR): New type.
	(grub_squash_frag_desc): Add field size.
	(SQUASH_BLOCK_FLAGS): New enum.
	(grub_squash_data): Use grub_squash_cache_inode.
	(grub_fshelp_node): Make ino_chunk 64-bit.
	(read_chunk): Minor argument change. All users updated.
	(squash_mount): Use correct le_to_cpu.
	(grub_squash_open): Handle LONG_REGULAR.
	(direct_read): New function.
	(grub_squash_read_data): Handle blocks correctly.
 2011-10-25 18:09:00 +02:00
Colin Watson
cff5e5e58d grub-core/fs/squash4.c: Add missing GRUB_MOD_LICENSE. 2011-04-21 10:37:45 +01:00
Vladimir 'phcoder' Serbinenko
81ecffbfc1 Add missing packed attribute 2010-12-11 18:42:44 +01:00
Vladimir 'phcoder' Serbinenko
5e96cb4452 Extend few other fields 2010-12-11 18:41:42 +01:00
Vladimir 'phcoder' Serbinenko
ea17ec49ae Extend fields in dirent header 2010-12-11 18:32:08 +01:00
Vladimir 'phcoder' Serbinenko
4aab263130 SquashFS mtime support 2010-12-11 18:20:45 +01:00
Vladimir 'phcoder' Serbinenko
4a91cd8220 symlink support 2010-12-09 22:29:36 +01:00
Vladimir 'phcoder' Serbinenko
e330e4f383 support file mtime 2010-12-09 21:17:27 +01:00
Vladimir 'phcoder' Serbinenko
627a62fc70 Make type-dependent portion of inode an union 2010-12-09 21:14:42 +01:00
Vladimir 'phcoder' Serbinenko
1fc7203971 Split grub_squash_read_data 2010-12-09 20:48:03 +01:00
Vladimir 'phcoder' Serbinenko
8eef1f8244 Compressed fragments and compressed data support 2010-12-09 20:41:41 +01:00
Vladimir 'phcoder' Serbinenko
e4eaf62555 Small restructuring of squash_read 2010-12-09 19:40:11 +01:00
Vladimir 'phcoder' Serbinenko
76e39dc871 Compressed metadata support 2010-12-09 19:23:35 +01:00
Vladimir 'phcoder' Serbinenko
99f0735fb8 Support multi-header directories 2010-12-09 18:22:38 +01:00
Vladimir 'phcoder' Serbinenko
948ebd7e91 Support fragments and chunks for data 2010-12-09 17:06:49 +01:00
Vladimir 'phcoder' Serbinenko
7ed6c3e85f Honor chunk number for directories 2010-12-09 02:48:59 +01:00
Vladimir 'phcoder' Serbinenko
0a040470e5 determine root inode on squash4fs 2010-12-09 00:04:36 +01:00
Vladimir 'phcoder' Serbinenko
1deadc83f5 extend size to 32-bit and handle file->offset 2010-12-08 23:03:59 +01:00
Vladimir 'phcoder' Serbinenko
332fa36887 some squash4 code. Works only in very easy cases. 2010-12-08 21:22:46 +01:00