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| author | Gilad Ben-Yossef <gilad@benyossef.com> | 2019-07-02 14:39:20 +0300 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2019-07-26 14:51:57 +1000 |
| commit | 9552389c465ed1ded39edf4a5642a861b53c2955 (patch) | |
| tree | 38fd9580bdd5495075e63e950eda864aabaea16f /crypto/fips.c | |
| parent | 76a95bd8f9e10cade9c4c8df93b5c20ff45dc0f5 (diff) | |
| download | linux-9552389c465ed1ded39edf4a5642a861b53c2955.tar.gz linux-9552389c465ed1ded39edf4a5642a861b53c2955.tar.bz2 linux-9552389c465ed1ded39edf4a5642a861b53c2955.zip | |
crypto: fips - add FIPS test failure notification chain
Crypto test failures in FIPS mode cause an immediate panic, but
on some system the cryptographic boundary extends beyond just
the Linux controlled domain.
Add a simple atomic notification chain to allow interested parties
to register to receive notification prior to us kicking the bucket.
Signed-off-by: Gilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'crypto/fips.c')
| -rw-r--r-- | crypto/fips.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/crypto/fips.c b/crypto/fips.c index c0b3a3c3452d..7b1d8caee669 100644 --- a/crypto/fips.c +++ b/crypto/fips.c @@ -11,10 +11,14 @@ #include <linux/module.h> #include <linux/kernel.h> #include <linux/sysctl.h> +#include <linux/notifier.h> int fips_enabled; EXPORT_SYMBOL_GPL(fips_enabled); +ATOMIC_NOTIFIER_HEAD(fips_fail_notif_chain); +EXPORT_SYMBOL_GPL(fips_fail_notif_chain); + /* Process kernel command-line parameter at boot time. fips=0 or fips=1 */ static int fips_enable(char *str) { @@ -58,6 +62,13 @@ static void crypto_proc_fips_exit(void) unregister_sysctl_table(crypto_sysctls); } +void fips_fail_notify(void) +{ + if (fips_enabled) + atomic_notifier_call_chain(&fips_fail_notif_chain, 0, NULL); +} +EXPORT_SYMBOL_GPL(fips_fail_notify); + static int __init fips_init(void) { crypto_proc_fips_init(); |