Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

For easy internal debugging.
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

Mark ntfs dirty in this case.
Rename ntfs_filldir to ntfs_dir_emit.
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

In order not to call copy_to_user (from fiemap_fill_next_extent)
we allocate memory in the kernel, fill it and copy it to user memory
after up_read(run_lock).

Reported-by: syzbot+36bb70085ef6edc2ebb9@syzkaller.appspotmail.com
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

We skip the run_truncate_head call also for $MFT::$ATTR_BITMAP.
Otherwise wnd_map()/run_lookup_entry will not find the disk position for the bitmap parts.

Fixes: 0e5b044c ("fs/ntfs3: Refactoring attr_set_size to restore after errors")
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

Fixes: 3f3b442b ("fs/ntfs3: Add bitmap")
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

The 'nocase' option was mistakenly added as fsparam_flag_no
with the 'no' prefix, causing the case-insensitive mode to require
the 'nonocase' option to be enabled.

Fixes: a3a956c7 ("fs/ntfs3: Add option "nocase"")
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

Fields flags and res[3] replaced with one 4 byte flags.

Fixes: 4534a70b ("fs/ntfs3: Add headers and misc files")
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

This involves converting all users of offs_page to offs_folio, but
it's worth it because we get rid of a lot of hidden calls to
compound_head().  We continue to use order-0 folios here, and convert
back to a struct page to call ntfs_bio_pages().
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

We still use an array of pages for the decompression, but this removes
a few calls to compound_head().
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

The function still takes an array of pages, but use a folio internally.
This function would deadlock against itself if used with large folios
(as it locks each page), so we can be a little sloppy with the conversion
back from folio to page for now.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

Nobody checks the error flag on ntfs3 folios, so stop setting and
clearing it.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

Fetch a folio from the page cache instead of a page and operate on it.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
[almaz.alexandrovich@paragon-software.com: skip using folio_end_read]
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

Now that both callers of attr_data_write_resident() have a folio, pass
it in and use memcpy_from_folio() to handle all the gnarly highmem
multi-page problems.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

Convert the passed page back into a folio and use the folio APIs, saving
a few hidden calls to compound_head().
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

Now that all three callers have a folio, pass it in and use
folio_fill_tail() to do the hard work of filling the folio.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

Retrieve a folio from the page cache instead of a precise page.
This function is now large folio safe, but its called function is not.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

Remove the struct page conversion, and use a folio throughout.  We still
convert back to a struct page for calling some internal functions,
but those will change soon.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

CHECK   /home/andy/prj/linux-topic-uart/fs/ntfs3/super.c
fs/ntfs3/super.c:471:23: warning: unknown escape sequence: '\%'

Drop stray '\' (backslash) in formatting string.

Fixes: d27e202b ("fs/ntfs3: Add more info into /proc/fs/ntfs3/<dev>/volinfo")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

New names make it easier to read code.
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

Added out-of-bound checking for *ane (ATTR_NAME_ENTRY).
Reported-by: lei lu <llfamsec@gmail.com>
Fixes: 865e7a77 ("fs/ntfs3: Reduce stack usage")
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

This adds sanity checks for ff offset. There is a check
on rt->first_free at first, but walking through by ff
without any check. If the second ff is a large offset.
We may encounter an out-of-bound read.
Signed-off-by: lei lu <llfamsec@gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

Clusters allocated for Extended Attributes, must be freed
when rolling back inode creation.

Fixes: 82cae269 ("fs/ntfs3: Add initialization of super block")
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

In addition to returning an error, mark the node as bad.
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

The issue was detected due to xfstest 465 failing.

Fixes: 4342306f ("fs/ntfs3: Add file operations and implementation")
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

If the offset is equal to or greater than the end of
file, an error is returned. For such operations (i.e., inserting
a hole at the end of file), ftruncate(2) should be used.
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

After switching from pages to folio [1], it became evident that
the initialization of .dirty_folio for page cache operations was missed for
compressed files.

[1] https://lore.kernel.org/ntfs3/20240422193203.3534108-1-willy@infradead.org

Fixes: 82cae269 ("fs/ntfs3: Add initialization of super block")
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

Flush the file mapping directly.
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

An additional condition causes the mft record to be read from disk
and get the file type dt_type.

Fixes: 22457c04 ("fs/ntfs3: Modified fix directory element type detection")
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

Fixes: be71b5cb ("fs/ntfs3: Add attrib operations")
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

Attempting to retrieve an attribute data block in a compressed frame
is ignored.

Fixes: be71b5cb ("fs/ntfs3: Add attrib operations")
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

Сorrected calculation of required space len (in clusters)
for attribute data storage in case of compression.

Fixes: be71b5cb ("fs/ntfs3: Add attrib operations")
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

MAXIMUM_REPARSE_DATA_BUFFER_SIZE is not used in the code.
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

To check the length of the volume label, the existing constant
NTFS_LABEL_MAX_LENGTH could be used.
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

Replaced the two loops reading $AttrDef and $UpCase with
the inode_read_data() function.
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

COMPRESSION_UNIT and NTFS_LZNT_CUNIT mean the same thing
(1u<<NTFS_LZNT_CUNIT) determines the size for compression (in clusters).

COMPRESS_MAX_CLUSTER is not used in the code.
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

At the moment, the function turned out to be unused, so I removed it.
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

percpu.h depends on smp.h, but doesn't include it directly because of
circular header dependency issues; percpu.h is needed in a bunch of low
level headers.

This fixes a randconfig build error on mips:

  include/linux/alloc_tag.h: In function '__alloc_tag_ref_set':
  include/asm-generic/percpu.h:31:40: error: implicit declaration of function 'raw_smp_processor_id' [-Werror=implicit-function-declaration]
Reported-by: kernel test robot <lkp@intel.com>
Fixes: 24e44cc2 ("mm: percpu: enable per-cpu allocation tagging")
Closes: https://lore.kernel.org/oe-kbuild-all/202405210052.DIrMXJNz-lkp@intel.com/Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>