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2bc5e5e816
In commit f61b9bb3f838 ("fs: add a new SB_I_NOUMASK flag") we added a
new SB_I_NOUMASK flag that is used by filesystems like NFS to indicate
that umask stripping is never supposed to be done in the vfs independent
of whether or not POSIX ACLs are supported.
Overlayfs falls into the same category as it raises SB_POSIXACL
unconditionally to defer umask application to the upper filesystem.
Now that we have SB_I_NOUMASK use that and make SB_POSIXACL properly
conditional on whether or not the kernel does have support for it. This
will enable use to turn IS_POSIXACL() into nop on kernels that don't
have POSIX ACL support avoding bugs from missed umask stripping.
Link: https://lore.kernel.org/r/20231012-einband-uferpromenade-80541a047a1f@brauner
Acked-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
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| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| rust | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .rustfmt.toml | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
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 Restructured Text 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.