kernel/linux.git/fs/autofs/root.c, branch v6.6.141

autofs: convert to ctime accessor functions

2023-07-13T08:28:04+00:00

In later patches, we're going to change how the inode's ctime field is used. Switch to using accessor functions instead of raw accesses of inode->i_ctime. Reviewed-by: Ian Kent Reviewed-by: Jan Kara Signed-off-by: Jeff Layton Message-Id: <20230705190309.579783-24-jlayton@kernel.org> Signed-off-by: Christian Brauner

autofs: set ctime as well when mtime changes on a dir

2023-06-15T07:22:24+00:00

When adding entries to a directory, POSIX generally requires that the ctime also be updated alongside the mtime. Signed-off-by: Jeff Layton Acked-by: Ian Kent Message-Id: <20230612104524.17058-4-jlayton@kernel.org> Signed-off-by: Christian Brauner

fs: port ->permission() to pass mnt_idmap

2023-01-19T08:24:28+00:00

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 ->mkdir() to pass mnt_idmap

2023-01-19T08:24:26+00:00

fs: port ->symlink() to pass mnt_idmap

2023-01-19T08:24:25+00:00

autofs: add comment about autofs_mountpoint_changed()

2022-07-18T00:31:42+00:00

The function autofs_mountpoint_changed() is unusual, add a comment about two cases for which it is needed. Link: https://lkml.kernel.org/r/165724459804.30914.10974834416046555127.stgit@donald.themaw.net Signed-off-by: Ian Kent Cc: Al Viro Cc: David Howells Cc: Miklos Szeredi Signed-off-by: Andrew Morton

autofs: use dentry info count instead of simple_empty()

2022-07-18T00:31:42+00:00

The dentry info. field count is used to check if a dentry is in use during expire. But, to be used for this the count field must account for the presence of child dentries in a directory dentry. Therefore it can also be used to check for an empty directory dentry which can be done without having to to take an additional lock or account for the presence of a readdir cursor dentry as is done by simple_empty(). Link: https://lkml.kernel.org/r/165724459238.30914.1504611159945950108.stgit@donald.themaw.net Signed-off-by: Ian Kent Cc: Al Viro Cc: David Howells Cc: Miklos Szeredi Signed-off-by: Andrew Morton

autofs: make dentry info count consistent

2022-07-18T00:31:42+00:00

If an autofs dentry is a mount root directory there's no ->mkdir() call to set its count to one. To make the dentry info count consistent for all autofs dentries set count to one when the dentry info struct is allocated. Link: https://lkml.kernel.org/r/165724458671.30914.2902424437132835325.stgit@donald.themaw.net Signed-off-by: Ian Kent Cc: Al Viro Cc: David Howells Cc: Miklos Szeredi Signed-off-by: Andrew Morton

autofs: use inode permission method for write access

2022-07-18T00:31:42+00:00

Patch series "autofs: misc patches". This series contains several patches that resulted mostly from comments made by Al Viro (quite a long time ago now). This patch (of 5): Eliminate some code duplication from mkdir/rmdir/symlink/unlink methods by using the inode operation .permission(). Link: https://lkml.kernel.org/r/165724445154.30914.10970894936827635879.stgit@donald.themaw.net Link: https://lkml.kernel.org/r/165724458096.30914.13499431569758625806.stgit@donald.themaw.net Signed-off-by: Ian Kent Cc: Al Viro Cc: David Howells Cc: Miklos Szeredi Signed-off-by: Andrew Morton

fs: make helpers idmap mount aware

2021-01-24T13:27:20+00:00

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