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@@ -127,14 +127,21 @@ config TMPFS_POSIX_ACL
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select TMPFS_XATTR
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select GENERIC_ACL
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help
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- POSIX Access Control Lists (ACLs) support permissions for users and
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- groups beyond the owner/group/world scheme.
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+ POSIX Access Control Lists (ACLs) support additional access rights
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+ for users and groups beyond the standard owner/group/world scheme,
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+ and this option selects support for ACLs specifically for tmpfs
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+ filesystems.
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+
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+ If you've selected TMPFS, it's possible that you'll also need
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+ this option as there are a number of Linux distros that require
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+ POSIX ACL support under /dev for certain features to work properly.
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+ For example, some distros need this feature for ALSA-related /dev
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+ files for sound to work properly. In short, if you're not sure,
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+ say Y.
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To learn more about Access Control Lists, visit the POSIX ACLs for
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Linux website <http://acl.bestbits.at/>.
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- If you don't know what Access Control Lists are, say N.
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-
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config TMPFS_XATTR
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bool "Tmpfs extended attributes"
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depends on TMPFS
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