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067d3f7100
Orphaned files are defined to be files with nonzero ondisk link count but no observable parent directory. This series enables online repair to reparent orphaned files into the filesystem directory tree, and wires up this reparenting ability into the directory, file link count, and parent pointer repair functions. This is how we fix files with positive link count that are not reachable through the directory tree. This patch will also create the orphanage directory (lost+found) if it is not present. In contrast to xfs_repair, we follow e2fsck in creating the lost+found without group or other-owner access to avoid accidental disclosure of files that were previously hidden by an 0700 directory. That's silly security, but people have been known to do it. This has been running on the djcloud for months with no problems. Enjoy! Signed-off-by: Darrick J. Wong <djwong@kernel.org> -----BEGIN PGP SIGNATURE----- iHUEABYKAB0WIQQ2qTKExjcn+O1o2YRKO3ySh0YRpgUCZh23UwAKCRBKO3ySh0YR pnJ8AP4kTiYucq40QUjYbG9xZGxbRenrgtwmBltcn6Xzm9PUVAD+KrU1GQ5Qm2zW /Kl5nDRM9zqJgQ5CQiBGuu3puHfnOgw= =vJ6T -----END PGP SIGNATURE----- Merge tag 'repair-orphanage-6.10_2024-04-15' of https://git.kernel.org/pub/scm/linux/kernel/git/djwong/xfs-linux into xfs-6.10-mergeA xfs: move orphan files to lost and found Orphaned files are defined to be files with nonzero ondisk link count but no observable parent directory. This series enables online repair to reparent orphaned files into the filesystem directory tree, and wires up this reparenting ability into the directory, file link count, and parent pointer repair functions. This is how we fix files with positive link count that are not reachable through the directory tree. This patch will also create the orphanage directory (lost+found) if it is not present. In contrast to xfs_repair, we follow e2fsck in creating the lost+found without group or other-owner access to avoid accidental disclosure of files that were previously hidden by an 0700 directory. That's silly security, but people have been known to do it. Signed-off-by: Darrick J. Wong <djwong@kernel.org> Signed-off-by: Chandan Babu R <chandanbabu@kernel.org> * tag 'repair-orphanage-6.10_2024-04-15' of https://git.kernel.org/pub/scm/linux/kernel/git/djwong/xfs-linux: xfs: ensure dentry consistency when the orphanage adopts a file xfs: move files to orphanage instead of letting nlinks drop to zero xfs: move orphan files to the orphanage |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.