diff options
Diffstat (limited to 'security/integrity/digsig.c')
| -rw-r--r-- | security/integrity/digsig.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/security/integrity/digsig.c b/security/integrity/digsig.c index b4af4eb..8d4fbff 100644 --- a/security/integrity/digsig.c +++ b/security/integrity/digsig.c @@ -13,7 +13,9 @@ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #include <linux/err.h> +#include <linux/sched.h> #include <linux/rbtree.h> +#include <linux/cred.h> #include <linux/key-type.h> #include <linux/digsig.h> @@ -24,7 +26,11 @@ static struct key *keyring[INTEGRITY_KEYRING_MAX]; static const char *keyring_name[INTEGRITY_KEYRING_MAX] = { "_evm", "_module", +#ifndef CONFIG_IMA_TRUSTED_KEYRING "_ima", +#else + ".ima", +#endif }; int integrity_digsig_verify(const unsigned int id, const char *sig, int siglen, @@ -56,3 +62,25 @@ int integrity_digsig_verify(const unsigned int id, const char *sig, int siglen, return -EOPNOTSUPP; } + +int integrity_init_keyring(const unsigned int id) +{ + const struct cred *cred = current_cred(); + int err = 0; + + keyring[id] = keyring_alloc(keyring_name[id], KUIDT_INIT(0), + KGIDT_INIT(0), cred, + ((KEY_POS_ALL & ~KEY_POS_SETATTR) | + KEY_USR_VIEW | KEY_USR_READ | + KEY_USR_WRITE | KEY_USR_SEARCH), + KEY_ALLOC_NOT_IN_QUOTA, NULL); + if (!IS_ERR(keyring[id])) + set_bit(KEY_FLAG_TRUSTED_ONLY, &keyring[id]->flags); + else { + err = PTR_ERR(keyring[id]); + pr_info("Can't allocate %s keyring (%d)\n", + keyring_name[id], err); + keyring[id] = NULL; + } + return err; +} |