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| author | Arnd Bergmann <arnd@arndb.de> | 2016-07-25 10:59:07 -0700 |
|---|---|---|
| committer | James Morris <james.l.morris@oracle.com> | 2016-07-27 17:39:26 +1000 |
| commit | 7616ac70d1bb4f2e9d25c1a82d283f3368a7b632 (patch) | |
| tree | 1a286fbe8627e9ab580d9bdb7d00833645cb6477 /security | |
| parent | 82cc1a49b6358394938e759dc4c22b2be773bbad (diff) | |
| download | linux-0-day-7616ac70d1bb4f2e9d25c1a82d283f3368a7b632.tar.gz linux-0-day-7616ac70d1bb4f2e9d25c1a82d283f3368a7b632.tar.xz | |
apparmor: fix SECURITY_APPARMOR_HASH_DEFAULT parameter handling
The newly added Kconfig option could never work and just causes a build error
when disabled:
security/apparmor/lsm.c:675:25: error: 'CONFIG_SECURITY_APPARMOR_HASH_DEFAULT' undeclared here (not in a function)
bool aa_g_hash_policy = CONFIG_SECURITY_APPARMOR_HASH_DEFAULT;
The problem is that the macro undefined in this case, and we need to use the IS_ENABLED()
helper to turn it into a boolean constant.
Another minor problem with the original patch is that the option is even offered
in sysfs when SECURITY_APPARMOR_HASH is not enabled, so this also hides the option
in that case.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 6059f71f1e94 ("apparmor: add parameter to control whether policy hashing is used")
Signed-off-by: John Johansen <john.johansen@canonical.com>
Signed-off-by: James Morris <james.l.morris@oracle.com>
Diffstat (limited to 'security')
| -rw-r--r-- | security/apparmor/crypto.c | 3 | ||||
| -rw-r--r-- | security/apparmor/lsm.c | 4 | ||||
| -rw-r--r-- | security/apparmor/policy_unpack.c | 3 |
3 files changed, 7 insertions, 3 deletions
diff --git a/security/apparmor/crypto.c b/security/apparmor/crypto.c index 532471d0b3a0f..b75dab0df1cb2 100644 --- a/security/apparmor/crypto.c +++ b/security/apparmor/crypto.c @@ -39,6 +39,9 @@ int aa_calc_profile_hash(struct aa_profile *profile, u32 version, void *start, int error = -ENOMEM; u32 le32_version = cpu_to_le32(version); + if (!aa_g_hash_policy) + return 0; + if (!apparmor_tfm) return 0; diff --git a/security/apparmor/lsm.c b/security/apparmor/lsm.c index 3be30c701bfab..41b8cb1158017 100644 --- a/security/apparmor/lsm.c +++ b/security/apparmor/lsm.c @@ -671,9 +671,11 @@ enum profile_mode aa_g_profile_mode = APPARMOR_ENFORCE; module_param_call(mode, param_set_mode, param_get_mode, &aa_g_profile_mode, S_IRUSR | S_IWUSR); +#ifdef CONFIG_SECURITY_APPARMOR_HASH /* whether policy verification hashing is enabled */ -bool aa_g_hash_policy = CONFIG_SECURITY_APPARMOR_HASH_DEFAULT; +bool aa_g_hash_policy = IS_ENABLED(CONFIG_SECURITY_APPARMOR_HASH_DEFAULT); module_param_named(hash_policy, aa_g_hash_policy, aabool, S_IRUSR | S_IWUSR); +#endif /* Debug mode */ bool aa_g_debug; diff --git a/security/apparmor/policy_unpack.c b/security/apparmor/policy_unpack.c index b9b1c66a32a55..138120698f839 100644 --- a/security/apparmor/policy_unpack.c +++ b/security/apparmor/policy_unpack.c @@ -778,8 +778,7 @@ int aa_unpack(void *udata, size_t size, struct list_head *lh, const char **ns) if (error) goto fail_profile; - if (aa_g_hash_policy) - error = aa_calc_profile_hash(profile, e.version, start, + error = aa_calc_profile_hash(profile, e.version, start, e.pos - start); if (error) goto fail_profile; |