60 lines
2.4 KiB
Diff
60 lines
2.4 KiB
Diff
From 4718e09e4b15b957bf9d729793bc3de7caad8134 Mon Sep 17 00:00:00 2001
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From: Paulo Alcantara <pc@manguebit.com>
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Date: Sun, 10 Mar 2024 22:24:25 -0300
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Subject: [PATCH 2/2] mount.cifs.rst: update section about xattr/acl support
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Update section about required xattr/acl support for UID/GID mapping.
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Signed-off-by: Paulo Alcantara (Red Hat) <pc@manguebit.com>
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---
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mount.cifs.rst | 26 +++++++++++++++++++-------
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1 file changed, 19 insertions(+), 7 deletions(-)
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diff --git a/mount.cifs.rst b/mount.cifs.rst
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index 64127b23cf17..d82a13c932b3 100644
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--- a/mount.cifs.rst
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+++ b/mount.cifs.rst
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@@ -321,11 +321,12 @@ soft
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noacl
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Do not allow POSIX ACL operations even if server would support them.
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- The CIFS client can get and set POSIX ACLs (getfacl, setfacl) to Samba
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- servers version 3.0.10 and later. Setting POSIX ACLs requires enabling
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- both ``CIFS_XATTR`` and then ``CIFS_POSIX`` support in the CIFS
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- configuration options when building the cifs module. POSIX ACL support
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- can be disabled on a per mount basis by specifying ``noacl`` on mount.
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+ The CIFS client can get and set POSIX ACLs (getfacl, setfacl) to
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+ Samba servers version 3.0.10 and later. Setting POSIX ACLs requires
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+ enabling both ``CONFIG_CIFS_XATTR`` and then ``CONFIG_CIFS_POSIX``
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+ support in the CIFS configuration options when building the cifs
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+ module. POSIX ACL support can be disabled on a per mount basis by
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+ specifying ``noacl`` on mount.
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cifsacl
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This option is used to map CIFS/NTFS ACLs to/from Linux permission
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@@ -762,8 +763,19 @@ bits, and POSIX ACL as user authentication model. This is the most
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common authentication model for CIFS servers and is the one used by
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Windows.
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-Support for this requires both CIFS_XATTR and CIFS_ACL support in the
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-CIFS configuration options when building the cifs module.
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+Support for this requires cifs kernel module built with both
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+``CONFIG_CIFS_XATTR`` and ``CONFIG_CIFS_ACL`` options enabled. Since
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+Linux 5.3, ``CONFIG_CIFS_ACL`` option no longer exists as CIFS/NTFS
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+ACL support is always built into cifs kernel module.
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+
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+Most distribution kernels will already have those options enabled by
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+default, but you can still check if they are enabled with::
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+
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+ cat /lib/modules/$(uname -r)/build/.config
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+
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+Alternatively, if kernel is configured with ``CONFIG_IKCONFIG_PROC``::
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+
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+ zcat /proc/config.gz
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A CIFS/NTFS ACL is mapped to file permission bits using an algorithm
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specified in the following Microsoft TechNet document:
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--
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2.44.0
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