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Optionally allow using "user.overlay." namespace instead of "trusted.overlay." This is necessary for overlayfs to be able to be mounted in an unprivileged namepsace. Make the option explicit, since it makes the filesystem format be incompatible. Disable redirect_dir and metacopy options, because these would allow privilege escalation through direct manipulation of the "user.overlay.redirect" or "user.overlay.metacopy" xattrs. Signed-off-by: Miklos Szeredi <mszeredi@redhat.com> Reviewed-by: Amir Goldstein <amir73il@gmail.com>
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Miklos Szeredi
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Dec 14, 2020
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Original file line number | Diff line number | Diff line change |
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@@ -18,6 +18,7 @@ struct ovl_config { | |
bool nfs_export; | ||
int xino; | ||
bool metacopy; | ||
bool userxattr; | ||
bool ovl_volatile; | ||
}; | ||
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