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* fs/ntfs3: Redesign legacy ntfs supportKonstantin Komarov2024-07-111-0/+2
| | | | | | | | | 1) Make is_legacy_ntfs static inline. 2) Put legacy file_operations under #if IS_ENABLED(CONFIG_NTFS_FS). Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Christian Brauner <brauner@kernel.org> Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
* fs/ntfs3: Check more cases when directory is corruptedKonstantin Komarov2024-07-111-20/+32
| | | | | | | Mark ntfs dirty in this case. Rename ntfs_filldir to ntfs_dir_emit. Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
* fs/ntfs3: Fix getting file typeKonstantin Komarov2024-06-071-1/+2
| | | | | | | | An additional condition causes the mft record to be read from disk and get the file type dt_type. Fixes: 22457c047ed97 ("fs/ntfs3: Modified fix directory element type detection") Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
* Merge tag 'ntfs3_for_6.10' of ↵Linus Torvalds2024-05-251-0/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | https://github.com/Paragon-Software-Group/linux-ntfs3 Pull ntfs3 updates from Konstantin Komarov: "Fixes: - reusing of the file index (could cause the file to be trimmed) - infinite dir enumeration - taking DOS names into account during link counting - le32_to_cpu conversion, 32 bit overflow, NULL check - some code was refactored Changes: - removed max link count info display during driver init Remove: - atomic_open has been removed for lack of use" * tag 'ntfs3_for_6.10' of https://github.com/Paragon-Software-Group/linux-ntfs3: fs/ntfs3: Break dir enumeration if directory contents error fs/ntfs3: Fix case when index is reused during tree transformation fs/ntfs3: Mark volume as dirty if xattr is broken fs/ntfs3: Always make file nonresident on fallocate call fs/ntfs3: Redesign ntfs_create_inode to return error code instead of inode fs/ntfs3: Use variable length array instead of fixed size fs/ntfs3: Use 64 bit variable to avoid 32 bit overflow fs/ntfs3: Check 'folio' pointer for NULL fs/ntfs3: Missed le32_to_cpu conversion fs/ntfs3: Remove max link count info display during driver init fs/ntfs3: Taking DOS names into account during link counting fs/ntfs3: remove atomic_open fs/ntfs3: use kcalloc() instead of kzalloc()
| * fs/ntfs3: Break dir enumeration if directory contents errorKonstantin Komarov2024-05-241-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | If we somehow attempt to read beyond the directory size, an error is supposed to be returned. However, in some cases, read requests do not stop and instead enter into a loop. To avoid this, we set the position in the directory to the end. Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com> Cc: stable@vger.kernel.org
* | ntfs3: add legacy ntfs file operationsChristian Brauner2024-04-231-0/+7
|/ | | | | | To ensure that ioctl()s can't be used to circumvent write restrictions. Signed-off-by: Christian Brauner <brauner@kernel.org>
* fs/ntfs3: Add ioctl operation for directories (FITRIM)Nekun2024-01-291-0/+4
| | | | | | | | | | | | | | | | | | While ntfs3 supports discards, FITRIM ioctl() command has defined only for regular files. This may confuse users trying to invoke `fstrim` utility with the directory argument (for example, call `fstrim <mountpoint>` which is the common practice). In this case, ioctl() returns -ENOTTY without any error messages in kernel ring buffer, this may be easily interpreted as no support for discards in ntfs3 driver. Currently only FITRIM command implemented in ntfs_ioctl() and passed inode used only for dereferencing NTFS superblock, so no need for separate ioctl() handler for directories, just add existing ntfs_ioctl() handler to ntfs_dir_operations. Signed-off-by: Nekun <nekokun@firemail.cc> Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
* fs/ntfs3: Use i_size_read and i_size_writeKonstantin Komarov2024-01-291-1/+1
| | | | Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
* fs/ntfs3: Add and fix commentsKonstantin Komarov2023-12-061-1/+3
| | | | Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
* fs/ntfs3: Improve ntfs_dir_countKonstantin Komarov2023-12-061-7/+3
| | | | Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
* fs/ntfs3: Modified fix directory element type detectionKonstantin Komarov2023-12-061-5/+25
| | | | | | | | | Unfortunately reparse attribute is used for many purposes (several dozens). It is not possible here to know is this name symlink or not. To get exactly the type of name we should to open inode (read mft). getattr for opened file (fstat) correctly returns symlink. Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
* fs/ntfs3: Fix directory element type detectionGabriel Marcano2023-09-281-1/+5
| | | | | | | | | | | | | Calling stat() from userspace correctly identified junctions in an NTFS partition as symlinks, but using readdir() and iterating through the directory containing the same junction did not identify the junction as a symlink. When emitting directory contents, check FILE_ATTRIBUTE_REPARSE_POINT attribute to detect junctions and report them as links. Signed-off-by: Gabriel Marcano <gabemarcano@yahoo.com> Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
* fs/ntfs3: Fix sparse problemsKonstantin Komarov2022-11-141-2/+2
| | | | | | Fixing various problems, detected by sparse. Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
* fs/ntfs3: Rework ntfs_utf16_to_nlsKonstantin Komarov2021-10-111-11/+8
| | | | | | | | | Now ntfs_utf16_to_nls takes length as one of arguments. If length of symlink > 255, then we tried to convert length of symlink +- some random number. Now 255 symbols limit was removed. Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
* fs/ntfs3: Remove unneeded header files from c filesKari Argillander2021-09-131-3/+0
| | | | | | | | We have lot of unnecessary headers in these files. Remove them so that we help compiler a little bit. Signed-off-by: Kari Argillander <kari.argillander@gmail.com> Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
* fs/ntfs3: Convert mount options to pointer in sbiKari Argillander2021-09-091-4/+4
| | | | | | | | | | | | | Use pointer to mount options. We want to do this because we will use new mount api which will benefit that we have spi and mount options in different allocations. When we remount we do not have to make whole new spi it is enough that we will allocate just mount options. Please note that we can do example remount lot cleaner but things will change in next patch so this should be just functional. Signed-off-by: Kari Argillander <kari.argillander@gmail.com> Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
* fs/ntfs3: Restyle comments to better align with kernel-docKari Argillander2021-08-301-29/+32
| | | | | | | | | | | | | | | | | | Capitalize comments and end with period for better reading. Also function comments are now little more kernel-doc style. This way we can easily convert them to kernel-doc style if we want. Note that these are not yet complete with this style. Example function comments start with /* and in kernel-doc style they start /**. Use imperative mood in function descriptions. Change words like ntfs -> NTFS, linux -> Linux. Use "we" not "I" when commenting code. Signed-off-by: Kari Argillander <kari.argillander@gmail.com> Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
* fs/ntfs3: Add file operations and implementationKonstantin Komarov2021-08-131-0/+596
This adds file operations and implementation Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>
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