diff options
| author | Casey Schaufler <casey@schaufler-ca.com> | 2024-10-09 10:32:18 -0700 |
|---|---|---|
| committer | Paul Moore <paul@paul-moore.com> | 2024-10-11 14:34:15 -0400 |
| commit | b0654ca42998440df42ba2ccc3b7dbe3bf5b7bb5 (patch) | |
| tree | 8c0ee9aa36bbe930160cb0e03dccb1bc861edbdc /security/smack | |
| parent | audit: use an lsm_prop in audit_names (diff) | |
| download | linux-b0654ca42998440df42ba2ccc3b7dbe3bf5b7bb5.tar.gz linux-b0654ca42998440df42ba2ccc3b7dbe3bf5b7bb5.zip | |
lsm: create new security_cred_getlsmprop LSM hook
Create a new LSM hook security_cred_getlsmprop() which, like
security_cred_getsecid(), fetches LSM specific attributes from the
cred structure. The associated data elements in the audit sub-system
are changed from a secid to a lsm_prop to accommodate multiple possible
LSM audit users.
Cc: linux-integrity@vger.kernel.org
Cc: audit@vger.kernel.org
Cc: selinux@vger.kernel.org
Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
[PM: subj line tweak]
Signed-off-by: Paul Moore <paul@paul-moore.com>
Diffstat (limited to 'security/smack')
| -rw-r--r-- | security/smack/smack_lsm.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c index 5c3cb2837105..52cc6a65d674 100644 --- a/security/smack/smack_lsm.c +++ b/security/smack/smack_lsm.c @@ -2151,6 +2151,23 @@ static void smack_cred_getsecid(const struct cred *cred, u32 *secid) } /** + * smack_cred_getlsmprop - get the Smack label for a creds structure + * @cred: the object creds + * @prop: where to put the data + * + * Sets the Smack part of the ref + */ +static void smack_cred_getlsmprop(const struct cred *cred, + struct lsm_prop *prop) +{ + rcu_read_lock(); + prop->smack.skp = smk_of_task(smack_cred(cred)); + /* scaffolding */ + prop->scaffold.secid = prop->smack.skp->smk_secid; + rcu_read_unlock(); +} + +/** * smack_kernel_act_as - Set the subjective context in a set of credentials * @new: points to the set of credentials to be modified. * @secid: specifies the security ID to be set @@ -5132,6 +5149,7 @@ static struct security_hook_list smack_hooks[] __ro_after_init = { LSM_HOOK_INIT(cred_prepare, smack_cred_prepare), LSM_HOOK_INIT(cred_transfer, smack_cred_transfer), LSM_HOOK_INIT(cred_getsecid, smack_cred_getsecid), + LSM_HOOK_INIT(cred_getlsmprop, smack_cred_getlsmprop), LSM_HOOK_INIT(kernel_act_as, smack_kernel_act_as), LSM_HOOK_INIT(kernel_create_files_as, smack_kernel_create_files_as), LSM_HOOK_INIT(task_setpgid, smack_task_setpgid), |