kernel/fs/fat/fat.h, branch 0x221E-v0.0.1-v6.19

fat: Convert to new mount api

2024-07-03T08:48:59Z

vfat and msdos share a common set of options, with additional, unique options for each filesystem. Each filesystem calls common fc initialization and parsing routines, with an "is_vfat" parameter. For parsing, if the option is not found in the common parameter_spec, parsing is retried with the fs-specific parameter_spec. This patch leaves nls loading to fill_super, so the codepage and charset options are not validated as they are requested. This matches current behavior. It would be possible to test-load as each option is parsed, but that would make i.e. mount -o "iocharset=nope,iocharset=iso8859-1" fail, where it does not fail today because only the last iocharset option is considered. The obsolete "conv=" option is set up with an enum of acceptable values; currently invalid "conv=" options are rejected as such, even though the option is obsolete, so this patch preserves that behavior. Signed-off-by: Eric Sandeen Link: https://lore.kernel.org/r/a9411b02-5f8e-4e1e-90aa-0c032d66c312@redhat.com Acked-by: OGAWA Hirofumi Signed-off-by: Christian Brauner

fat: move debug into fat_mount_options

2024-07-03T08:48:59Z

Move the debug variable into fat_mount_options for consistency and to facilitate conversion to new mount API. Signed-off-by: Eric Sandeen Link: https://lore.kernel.org/r/f6155247-32ee-4cfe-b808-9102b17f7cd1@redhat.com Acked-by: OGAWA Hirofumi Signed-off-by: Christian Brauner

fs: drop the timespec64 argument from update_time

2023-08-11T07:04:57Z

Now that all of the update_time operations are prepared for it, we can drop the timespec64 argument from the update_time operation. Do that and remove it from some associated functions like inode_update_time and inode_needs_update_time. Signed-off-by: Jeff Layton Reviewed-by: Jan Kara Message-Id: <20230807-mgctime-v7-8-d1dec143a704@kernel.org> Signed-off-by: Christian Brauner

fs: port ->getattr() to pass mnt_idmap

2023-01-19T08:24:25Z

Convert to struct mnt_idmap. Last cycle we merged the necessary infrastructure in 256c8aed2b42 ("fs: introduce dedicated idmap type for mounts"). This is just the conversion to struct mnt_idmap. Currently we still pass around the plain namespace that was attached to a mount. This is in general pretty convenient but it makes it easy to conflate namespaces that are relevant on the filesystem with namespaces that are relevent on the mount level. Especially for non-vfs developers without detailed knowledge in this area this can be a potential source for bugs. Once the conversion to struct mnt_idmap is done all helpers down to the really low-level helpers will take a struct mnt_idmap argument instead of two namespace arguments. This way it becomes impossible to conflate the two eliminating the possibility of any bugs. All of the vfs and all filesystems only operate on struct mnt_idmap. Acked-by: Dave Chinner Reviewed-by: Christoph Hellwig Signed-off-by: Christian Brauner (Microsoft)

fs: port ->setattr() to pass mnt_idmap

2023-01-19T08:24:02Z

fat: remove time truncations in vfat_create/vfat_mkdir

2022-05-19T21:10:31Z

All the timestamps in vfat_create() and vfat_mkdir() come from fat_time_fat2unix() which ensures time granularity. We don't need to truncate them to fit FAT's format. Moreover, fat_truncate_crtime() and fat_timespec64_trunc_10ms() are also removed because there is no caller anymore. Link: https://lkml.kernel.org/r/20220503152536.2503003-4-cccheng@synology.com Signed-off-by: Chung-Chiang Cheng Acked-by: OGAWA Hirofumi Signed-off-by: Andrew Morton

fat: report creation time in statx

2022-05-19T21:10:31Z

creation time is no longer mixed with change time. Add an in-memory field for it, and report it in statx if supported. Link: https://lkml.kernel.org/r/20220503152536.2503003-3-cccheng@synology.com Signed-off-by: Chung-Chiang Cheng Acked-by: OGAWA Hirofumi Signed-off-by: Andrew Morton

fat: split fat_truncate_time() into separate functions

2022-05-19T21:10:31Z

Separate fat_truncate_time() to each timestamps for later creation time work. This patch does not introduce any functional changes, it's merely refactoring change. Link: https://lkml.kernel.org/r/20220503152536.2503003-1-cccheng@synology.com Signed-off-by: Chung-Chiang Cheng Acked-by: OGAWA Hirofumi Signed-off-by: Andrew Morton

fatfs: add FAT messages to printk index

2022-04-29T21:38:02Z

In order for end users to quickly react to new issues that come up in production, it is proving useful to leverage the printk indexing system. This printk index enables kernel developers to use calls to printk() with changeable ad-hoc format strings (as they always have; no change of expectations), while enabling end users to examine format strings to detect changes. Since end users are using regular expressions to match messages printed through printk(), being able to detect changes in chosen format strings from release to release provides a useful signal to review printk()-matching regular expressions for any necessary updates. So that detailed FAT messages are captured by this printk index, this patch wraps fat_msg with a macro. [akpm@linux-foundation.org: coding-style cleanups] Link: https://lkml.kernel.org/r/8aaa2dd7995e820292bb40d2120ab69756662c65.1648688136.git.jof@thejof.com Signed-off-by: Jonathan Lassoff Acked-by: OGAWA Hirofumi Reviewed-by: Petr Mladek Tested-by: Petr Mladek Signed-off-by: Andrew Morton

fs: make helpers idmap mount aware

2021-01-24T13:27:20Z

Extend some inode methods with an additional user namespace argument. A filesystem that is aware of idmapped mounts will receive the user namespace the mount has been marked with. This can be used for additional permission checking and also to enable filesystems to translate between uids and gids if they need to. We have implemented all relevant helpers in earlier patches. As requested we simply extend the exisiting inode method instead of introducing new ones. This is a little more code churn but it's mostly mechanical and doesnt't leave us with additional inode methods. Link: https://lore.kernel.org/r/20210121131959.646623-25-christian.brauner@ubuntu.com Cc: Christoph Hellwig Cc: David Howells Cc: Al Viro Cc: linux-fsdevel@vger.kernel.org Reviewed-by: Christoph Hellwig Signed-off-by: Christian Brauner