[PATCH 21/58] LSM: Use lsm_export in security_cred_getsecid

[Casey Schaufler]

Convert security_cred_getsecid to use the lsm_export structure
instead of a u32 secid. There is some scaffolding involved
that will be removed when the related data is updated.

Signed-off-by: Casey Schaufler <casey at schaufler-ca.com>
---
 include/linux/security.h          | 2 +-
 security/integrity/ima/ima_main.c | 3 ++-
 security/security.c               | 8 +++-----
 3 files changed, 6 insertions(+), 7 deletions(-)

diff --git a/include/linux/security.h b/include/linux/security.h
index 2d04687c3fa9..40aa7b9f3c83 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -381,7 +381,7 @@ int security_cred_alloc_blank(struct cred *cred, gfp_t gfp);
 void security_cred_free(struct cred *cred);
 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp);
 void security_transfer_creds(struct cred *new, const struct cred *old);
-void security_cred_getsecid(const struct cred *c, u32 *secid);
+void security_cred_getsecid(const struct cred *c, struct lsm_export *l);
 int security_kernel_act_as(struct cred *new, struct lsm_export *l);
 int security_kernel_create_files_as(struct cred *new, struct inode *inode);
 int security_kernel_module_request(char *kmod_name);
diff --git a/security/integrity/ima/ima_main.c b/security/integrity/ima/ima_main.c
index 1e3cfaf0ee5c..f5efa9ef270d 100644
--- a/security/integrity/ima/ima_main.c
+++ b/security/integrity/ima/ima_main.c
@@ -374,7 +374,8 @@ int ima_bprm_check(struct linux_binprm *bprm)
 	if (ret)
 		return ret;
 
-	security_cred_getsecid(bprm->cred, &secid);
+	security_cred_getsecid(bprm->cred, &le);
+	lsm_export_secid(&le, &secid);
 	return process_measurement(bprm->file, bprm->cred, secid, NULL, 0,
 				   MAY_EXEC, CREDS_CHECK);
 }
diff --git a/security/security.c b/security/security.c
index e12ce930dfd9..69983ad68233 100644
--- a/security/security.c
+++ b/security/security.c
@@ -1604,12 +1604,10 @@ 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)
+void security_cred_getsecid(const struct cred *c, struct lsm_export *l)
 {
-	struct lsm_export data = { .flags = LSM_EXPORT_NONE };
-
-	call_void_hook(cred_getsecid, c, &data);
-	lsm_export_secid(&data, secid);
+	lsm_export_init(l);
+	call_void_hook(cred_getsecid, c, l);
 }
 EXPORT_SYMBOL(security_cred_getsecid);
 
-- 
2.19.1