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docs: clarify unmaintained status of overlayfs in configure.ac (#6632)
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Since users are still asking about it (see #6631).

Relates to #2799 #4178.
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kmk3 authored Jan 28, 2025
1 parent 4ebd147 commit 1bee256
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11 changes: 10 additions & 1 deletion configure
Original file line number Diff line number Diff line change
Expand Up @@ -4248,7 +4248,16 @@ then :
fi
# overlayfs features temporarily disabled pending fixes
# The --overlay and related options are not supported anymore due to security
# concerns (see CVE-2021-26910 and #4178), issues on newer kernels (see #2799)
# and overall lack of interest in fixing and maintaining them.
#
# Support is unlikely to be restored for the foreseeable future unless someone
# picks up the work, as it would require auditing the overlayfs code to ensure
# that it is secure and that it works properly.
#
# It is highly recommended to leave this option disabled; the overlayfs code
# that remains is only intended for testing/debugging purposes.
HAVE_OVERLAYFS=""
#AC_ARG_ENABLE([overlayfs],
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11 changes: 10 additions & 1 deletion configure.ac
Original file line number Diff line number Diff line change
Expand Up @@ -129,7 +129,16 @@ AS_IF([test "x$enable_dbusproxy" != "xno"], [
HAVE_DBUSPROXY="-DHAVE_DBUSPROXY"
])

# overlayfs features temporarily disabled pending fixes
# The --overlay and related options are not supported anymore due to security
# concerns (see CVE-2021-26910 and #4178), issues on newer kernels (see #2799)
# and overall lack of interest in fixing and maintaining them.
#
# Support is unlikely to be restored for the foreseeable future unless someone
# picks up the work, as it would require auditing the overlayfs code to ensure
# that it is secure and that it works properly.
#
# It is highly recommended to leave this option disabled; the overlayfs code
# that remains is only intended for testing/debugging purposes.
HAVE_OVERLAYFS=""
AC_SUBST([HAVE_OVERLAYFS])
#AC_ARG_ENABLE([overlayfs],
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