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From 4083e4d76b61bc9eb40583f941412c1ea1a0285b Mon Sep 17 00:00:00 2001
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From: Colin Walters <walters@verbum.org>
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Date: Fri, 21 Feb 2014 03:29:00 +0100
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Subject: [PATCH] selinux: Don't attempt to load policy in initramfs if it
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doesn't exist
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Currently on at least Fedora, SELinux policy does not come in the
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initramfs. systemd will attempt to load *both* in the initramfs and
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in the real root.
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Now, the selinux_init_load_policy() API has a regular error return
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value, as well as an "enforcing" boolean. To determine enforcing
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state, it looks for /etc/selinux/config as well as the presence of
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"enforcing=" on the kernel command line.
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Ordinarily, neither of those exist in the initramfs, so it will return
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"unknown" for enforcing, and systemd will simply ignore the failure to
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load policy.
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---
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src/core/selinux-setup.c | 7 +++++++
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1 file changed, 7 insertions(+)
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diff --git a/src/core/selinux-setup.c b/src/core/selinux-setup.c
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index 7a32ed5..9a5d6b2 100644
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--- a/src/core/selinux-setup.c
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+++ b/src/core/selinux-setup.c
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@@ -58,6 +58,13 @@ int selinux_setup(bool *loaded_policy) {
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cb.func_log = null_log;
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selinux_set_callback(SELINUX_CB_LOG, cb);
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+ /* Don't load policy in the initrd if we don't appear to have
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+ * it. For the real root, we check below if we've already
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+ * loaded policy, and return gracefully.
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+ */
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+ if (in_initrd() && access(selinux_path(), F_OK) < 0)
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+ return 0;
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+
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/* Already initialized by somebody else? */
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r = getcon_raw(&con);
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if (r == 0) {
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