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integrity: provide a function to load x509 certificate from the kernel

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Provide the function to load x509 certificates from the kernel into the
integrity kernel keyring.

Changes in v2:
* configuration option removed
* function declared as '__init'

Signed-off-by: Dmitry Kasatkin <d.kasatkin@samsung.com>
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
This commit is contained in:
Dmitry Kasatkin 2014-11-05 17:01:13 +02:00 committed by Mimi Zohar
parent e3c4abbfa9
commit 65d543b233
2 changed files with 37 additions and 1 deletions
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36
security/integrity/digsig.c
View file

@ -14,7 +14,7 @@
#include <linux/err.h>
#include <linux/sched.h>
#include <linux/rbtree.h>
#include <linux/slab.h>
#include <linux/cred.h>
#include <linux/key-type.h>
#include <linux/digsig.h>
@ -84,3 +84,37 @@ int __init integrity_init_keyring(const unsigned int id)
}
return err;
}
int __init integrity_load_x509(const unsigned int id, char *path)
{
key_ref_t key;
char *data;
int rc;
if (!keyring[id])
return -EINVAL;
rc = integrity_read_file(path, &data);
if (rc < 0)
return rc;
key = key_create_or_update(make_key_ref(keyring[id], 1),
"asymmetric",
NULL,
data,
rc,
((KEY_POS_ALL & ~KEY_POS_SETATTR) |
KEY_USR_VIEW | KEY_USR_READ),
KEY_ALLOC_NOT_IN_QUOTA | KEY_ALLOC_TRUSTED);
if (IS_ERR(key)) {
rc = PTR_ERR(key);
pr_err("Problem loading X.509 certificate (%d): %s\n",
rc, path);
} else {
pr_notice("Loaded X.509 cert '%s': %s\n",
key_ref_to_ptr(key)->description, path);
key_ref_put(key);
}
kfree(data);
return 0;
}

2
security/integrity/integrity.h
View file

@ -134,6 +134,7 @@ int integrity_digsig_verify(const unsigned int id, const char *sig, int siglen,
const char *digest, int digestlen);
int __init integrity_init_keyring(const unsigned int id);
int __init integrity_load_x509(const unsigned int id, char *path);
#else
static inline int integrity_digsig_verify(const unsigned int id,
@ -147,6 +148,7 @@ static inline int integrity_init_keyring(const unsigned int id)
{
return 0;
}
#endif /* CONFIG_INTEGRITY_SIGNATURE */
#ifdef CONFIG_INTEGRITY_ASYMMETRIC_KEYS