Blame SOURCES/cryptsetup-2.4.1-Cache-FIPS-mode-check.patch
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From 75e45462f097a9a75747b3f44d7672f2547e63e9 Mon Sep 17 00:00:00 2001
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From: Milan Broz <gmazyland@gmail.com>
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Date: Tue, 14 Sep 2021 09:56:05 +0200
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Subject: [PATCH 04/11] Cache FIPS mode check.
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We do not support switch while the crypto backend is already initialized,
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so it does not make sense to check repeatedly for the FIPS mode status.
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---
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lib/utils_fips.c | 11 ++++++++++-
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1 file changed, 10 insertions(+), 1 deletion(-)
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diff --git a/lib/utils_fips.c b/lib/utils_fips.c
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index 0c2b6434..640ff0e3 100644
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--- a/lib/utils_fips.c
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+++ b/lib/utils_fips.c
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@@ -26,6 +26,9 @@
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#if !ENABLE_FIPS
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bool crypt_fips_mode(void) { return false; }
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#else
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+static bool fips_checked = false;
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+static bool fips_mode = false;
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+
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static bool kernel_fips_mode(void)
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{
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int fd;
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@@ -41,6 +44,12 @@ static bool kernel_fips_mode(void)
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bool crypt_fips_mode(void)
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{
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- return kernel_fips_mode() && !access("/etc/system-fips", F_OK);
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+ if (fips_checked)
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+ return fips_mode;
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+
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+ fips_mode = kernel_fips_mode() && !access("/etc/system-fips", F_OK);
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+ fips_checked = true;
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+
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+ return fips_mode;
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}
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#endif /* ENABLE_FIPS */
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--
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2.27.0
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