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

Added done and undo labels for restoring after errors
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

Added comments to code
Added new function run_clone to make a copy of run
Added done and undo labels for restoring after errors
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

Added comments to code
Added two undo labels for restoring after errors
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

There are repetitive steps in case of bad inode
This commit wraps them in function
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

Now we take free space after the MFT zone if the MFT zone shrinks.
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

Checking in advance speeds things up in some cases.
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

Added some comments in frecord.c for more context.
Also changed run_lookup to static because it's an internal function.
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

Work with names must be completed in ni_add_name
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

attr_load_runs is an internal function
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

This argument helps in avoiding double locking
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

Cleaning up dead code
Fix wrong comments
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

In some cases we need to ni_find_attr attr_b
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

In some cases xattr is too fragmented,
so we need to load it before writing.
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

In some cases we need to return ENOSPC
Fixes xfstest generic/213
Fixes: 11434697 ("fs/ntfs3: Check new size for limits")
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

Fixes xfstest generic/300
Fixes: 4534a70b ("fs/ntfs3: Add headers and misc files")
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

Also don't mask EFBIG
Fixes xfstest generic/485
Fixes: 4342306f ("fs/ntfs3: Add file operations and implementation")
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

ntfs_set_ea can fail with NOSPC, so we don't need to
change mode in this situation.
Fixes xfstest generic/449
Fixes: be71b5cb ("fs/ntfs3: Add attrib operations")
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

There is no need to initialize with NULL as it'll be rewritten later.
Signed-off-by: Li kunyu <kunyu@nfschina.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

The assignment to variable r is duplicated, the second assignment
is redundant and can be removed.
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

This error path needs to call up_write(&ni->file.run_lock) and do some
other clean up before returning.

Fixes: aa30eccb ("fs/ntfs3: Fallocate (FALLOC_FL_INSERT_RANGE) implementation")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

None of callers check the return value of ntfs_update_mftmirr(), so make
it return void to make code simpler.
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

If ntfs_fill_super() wasn't called then sbi->sb will be equal to NULL.
Code should check this ptr before dereferencing. Syzbot hit this issue
via passing wrong mount param as can be seen from log below

Fail log:
ntfs3: Unknown parameter 'iochvrset'
general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f]
CPU: 1 PID: 3589 Comm: syz-executor210 Not tainted 5.18.0-rc3-syzkaller-00016-gb2534357 #0
...
Call Trace:
 <TASK>
 put_ntfs+0x1ed/0x2a0 fs/ntfs3/super.c:463
 ntfs_fs_free+0x6a/0xe0 fs/ntfs3/super.c:1363
 put_fs_context+0x119/0x7a0 fs/fs_context.c:469
 do_new_mount+0x2b4/0xad0 fs/namespace.c:3044
 do_mount fs/namespace.c:3383 [inline]
 __do_sys_mount fs/namespace.c:3591 [inline]

Fixes: 82cae269 ("fs/ntfs3: Add initialization of super block")
Reported-and-tested-by: syzbot+c95173762127ad76a824@syzkaller.appspotmail.com
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

Changed logic in ntfs_fallocate - more clear checks in beginning
instead of the middle of function and added FALLOC_FL_INSERT_RANGE.
Fixes xfstest generic/064
Fixes: 4342306f ("fs/ntfs3: Add file operations and implementation")
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

Add functions for inserting hole in file and inserting range in run.
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

We must check return value of log_read_rst
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

The "vcn" variable is a 64 bit.  The "log->clst_per_page" variable is a
u32.  This means that the mask accidentally clears out the high 32 bits
when it was only supposed to clear some low bits.  Fix this by adding a
cast to u64.

Fixes: b46acd6a ("fs/ntfs3: Add NTFS journal")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

For the readability and unity of the code, adjust the order
Signed-off-by: Yang Xu <xuyang2018.jy@fujitsu.com>
Reviewed-by: Kari Argillander <kari.argillander@gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

This value is checked in indx_read, so it must be initialized
Fixes: 82cae269 ("fs/ntfs3: Add initialization of super block")
Signed-off-by: Yan Lei <chinayanlei2002@163.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

Variable vcn is being assigned a value that is never read, it is
being re-assigned again in the initialization of a for-loop.  The
assignment is redundant and can be removed.

Cleans up clang scan build warning:
fs/ntfs3/attrib.c:1176:7: warning: Value stored to 'vcn' during its
initialization is never read [deadcode.DeadStores]
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Reviewed-by: Kari Argillander <kari.argillander@gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

Variable frame is assigned a value that is never read. The
assignment is redundant and can be removed. Cleans up the
clang-scan build warning:

fs/ntfs3/file.c:995:3: warning: Value stored to 'frame' is
never read [deadcode.DeadStores]
                frame = pos >> frame_bits;
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

'new_free' has just been allocated by kmalloc() and is known to be not
NULL.
So this pointer can't be equal to a previous memory allocation.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

There is null pointer dereference because i_op == NULL.
The bug happens because we don't initialize i_op for records in $Extend.
Fixes: 82cae269 ("fs/ntfs3: Add initialization of super block")
Reported-by: Liangbin Lian <jjm2473@gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

Now we save a copy of primary record for restoration.
Also now we remove all attributes from subrecords.
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

Pointer to options was freed twice on remount
Fixes xfstest generic/361
Fixes: 82cae269 ("fs/ntfs3: Add initialization of super block")
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

This commit makes function a bit more readable

Cc: Joe Perches <joe@perches.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

The ntfs3 filesystem lacks the 'invalidate_folio' method and it causes
memory leak. If you write to the filesystem and then unmount it, the
cached written data are not freed and they are permanently leaked.
Fixes: 7ba13abb ("fs: Turn block_invalidatepage into block_invalidate_folio")
Reported-by: José Luis Lara Carrascal <manualinux@yahoo.es>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Acked-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
Cc: stable@vger.kernel.org  # v5.18

log_read_rst() returns ENOMEM error when there is not enough memory.
In this case, if info is returned without initialization,
it attempts to kfree the uninitialized info->r_page pointer. This patch
moves the memset initialization code to before log_read_rst() is called.
Reported-by: Gerald Lee <sundaywind2004@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

Linux 5.18