exFAT doesn't handle "." and ".." correctly, convert it to fshelp to
reuse the same logic.

Emulate dot and dotdot in root directory. For other directories do not
add separator between name and extension for these two special entries.

Closes: 45335

Found by: Coverity scan.

	Just "packed" doesn't always pack the way we expect.

	grub-core/osdep/blocklist.c and add windows implementation since
	generic version doesn't work on NTFS on Windows due to aggressive
	unflushable cache.

	* 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.

* include/grub/fs.h (grub_fs_dir_hook_t): New type.
(struct grub_fs.dir): Add hook_data argument.

Update all implementations and callers.

	character but still remove trainling spaces.
	(grub_fat_label): Ignore archive flag.

	GCC bug.

	* include/grub/err.h (grub_err_t): New enum value GRUB_ERR_EOF.
	* grub-core/fs/fat.c (grub_fat_iterate_context): New struct.
	(grub_fat_iterate_dir): Split into ...
	(grub_fat_iterate_init): ... this, ...
	(grub_fat_iterate_fini): ... this, ...
	(grub_fat_iterate_dir_next): ... and this. All users updated.

	New argument origpath. All users updated.

	to cluster_bits, since it's already added in.
	(grub_fat_read_data): Likewise.

	* grub-core/fs/fat.c (grub_fat_data): Make fat_sector 32-bit.
	(grub_fat_mount) [MODE_EXFAT]: Fix bpb.num_reserved_sectors byte-swap.
	(grub_fat_iterate_dir) [MODE_EXFAT]: Fix attr byte-swap.
	Byte-swap utf16 when necessary.
	(grub_fat_label) [MODE_EXFAT]: Byte-swap utf16 when necessary.

	Fix source dir check.

	on it.

	check as some mkfs implementations omit it.

	to 15 UTF-16 characters as seen in FS generated by mkexfatfs.
	(grub_fat_label) [MODE_EXFAT]: Use macros for size.

	* grub-core/fs/jfs.c (grub_jfs_diropen): Likewise.
	* grub-core/fs/fat.c (grub_fat_iterate_dir): Likewise.

	* 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.

	if no label is found.
	(grub_fat_iterate_dir): Fix file size type.
	(grub_fat_iterate_dir): Likewise.

	* grub-core/fs/fat.c: Display the filename when file is not found.
	* grub-core/fs/fshelp.c: Likewise.
	* grub-core/fs/hfs.c: Likewise.
	* grub-core/fs/jfs.c: Likewise.
	* grub-core/fs/minix.c: Likewise.
	* grub-core/fs/ufs.c: Likewise.
	* grub-core/fs/btrfs.c: Likewise.
	* grub-core/commands/i386/pc/play.c: Likewise.

	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.

	* fs/fat.c (grub_fat_iterate_dir): Free unibuf at exit.

	* commands/efi/loadbios.c: Capitalize acronyms, replace `could not' by
	`couldn't' and `can not' by `cannot'.
	* commands/i386/pc/drivemap.c: Likewise.
	* disk/ata.c: Likewise.
	* disk/ieee1275/nand.c: Likewise.
	* fs/affs.c: Likewise.
	* fs/fat.c: Likewise.
	* fs/hfs.c: Likewise.
	* fs/hfsplus.c: Likewise.
	* fs/iso9660.c: Likewise.
	* fs/jfs.c: Likewise.
	* fs/minix.c: Likewise.
	* fs/reiserfs.c: Likewise.
	* fs/sfs.c: Likewise.
	* fs/udf.c: Likewise.
	* fs/ufs.c: Likewise.
	* fs/xfs.c: Likewise.
	* loader/powerpc/ieee1275/linux.c: Likewise.
	* loader/sparc64/ieee1275/linux.c: Likewise.
	* util/grub-probe.c: Likewise.
	* util/misc.c: Likewise.

        * include/grub/fs.h [GRUB_UTIL] (struct grub_fs): Add
        `reserved_first_sector' member.
        * fs/ext2.c [GRUB_UTIL] (grub_ext2_fs): Initialize
        `reserved_first_sector' to 1.
        * fs/fat.c [GRUB_UTIL] (grub_fat_fs): Likewise.
        * fs/ntfs.c [GRUB_UTIL] (grub_ntfs_fs): Likewise.
        * fs/hfsplus.c [GRUB_UTIL] (grub_hfsplus_fs): Likewise.
        * util/i386/pc/grub-setup.c (setup): Add safety check that probes for
        filesystems which begin at first sector.
        (options): New option --skip-fs-probe.   
        (main): Handle --skip-fs-probe and pass it to setup().

        * fs/fat.c (grub_fat_read_data): Remove `#if 0' braces around the
        grub_dprintf() that was just added.

	* fs/affs.c (grub_affs_read_symlink): Change leftover grub_printf into
	grub_dprintf.
	* fs/fat.c (grub_fat_read_data): Likewise.

	* kernel/disk.c (grub_disk_read): Use void pointer for the
	buffer.
	(grub_disk_write): Use const void pointer for the buffer.
	Adjust all callers.  Remove unnecessary casts.

	* include/grub/dl.h [GRUB_UTIL]: Provide inline implementations
	of grub_dl_ref() and grub_dl_unref().
	* commands/parttool.c: Remove preprocessor conditionals around
	grub_dl_ref() and grub_dl_unref().
	* fs/affs.c: Likewise.
	* fs/afs.c: Likewise.
	* fs/cpio.c: Likewise.
	* fs/ext2.c: Likewise.
	* fs/fat.c: Likewise.
	* fs/hfs.c: Likewise.
	* fs/hfsplus.c: Likewise.
	* fs/iso9660.c: Likewise.
	* fs/jfs.c: Likewise.
	* fs/minix.c: Likewise.
	* fs/ntfs.c: Likewise.
	* fs/reiserfs.c: Likewise.
	* fs/sfs.c: Likewise.
	* fs/udf.c: Likewise.
	* fs/ufs.c: Likewise.
	* fs/xfs.c: Likewise.
	* include/grub/dl.h: Likewise.
	* loader/xnu.c: Likewise.