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authorMatthew Garrett <mjg59@google.com>2018-01-09 00:36:19 +0300
committerMimi Zohar <zohar@linux.vnet.ibm.com>2018-03-23 13:31:11 +0300
commit3ec30113264a7bcd389f51d1738e42da0f41bb5a (patch)
tree75a1465c8f53522dafcf2d41085c925cb025e29f /security/security.c
parent5893ed18a26d1f56b97c0290b0cbbc2d49d6de28 (diff)
downloadlinux-3ec30113264a7bcd389f51d1738e42da0f41bb5a.tar.xz
security: Add a cred_getsecid hook
For IMA purposes, we want to be able to obtain the prepared secid in the bprm structure before the credentials are committed. Add a cred_getsecid hook that makes this possible. Signed-off-by: Matthew Garrett <mjg59@google.com> Acked-by: Paul Moore <paul@paul-moore.com> Cc: Paul Moore <paul@paul-moore.com> Cc: Stephen Smalley <sds@tycho.nsa.gov> Cc: Casey Schaufler <casey@schaufler-ca.com> Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Diffstat (limited to 'security/security.c')
-rw-r--r--security/security.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/security/security.c b/security/security.c
index 14c291910d25..957e8bee3554 100644
--- a/security/security.c
+++ b/security/security.c
@@ -1005,6 +1005,13 @@ void security_transfer_creds(struct cred *new, const struct cred *old)
call_void_hook(cred_transfer, new, old);
}
+void security_cred_getsecid(const struct cred *c, u32 *secid)
+{
+ *secid = 0;
+ call_void_hook(cred_getsecid, c, secid);
+}
+EXPORT_SYMBOL(security_cred_getsecid);
+
int security_kernel_act_as(struct cred *new, u32 secid)
{
return call_int_hook(kernel_act_as, 0, new, secid);