diff options
Diffstat (limited to 'security/integrity/ima/ima_template.c')
| -rw-r--r-- | security/integrity/ima/ima_template.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/security/integrity/ima/ima_template.c b/security/integrity/ima/ima_template.c index c28ff9bf8f32..000221419f6c 100644 --- a/security/integrity/ima/ima_template.c +++ b/security/integrity/ima/ima_template.c @@ -12,6 +12,8 @@ * File: ima_template.c * Helpers to manage template descriptors. */ +#include <crypto/hash_info.h> + #include "ima.h" #include "ima_template_lib.h" @@ -32,6 +34,35 @@ static struct ima_template_field supported_fields[] = { }; static struct ima_template_desc *ima_template; +static struct ima_template_desc *lookup_template_desc(const char *name); + +static int __init ima_template_setup(char *str) +{ + struct ima_template_desc *template_desc; + int template_len = strlen(str); + + /* + * Verify that a template with the supplied name exists. + * If not, use CONFIG_IMA_DEFAULT_TEMPLATE. + */ + template_desc = lookup_template_desc(str); + if (!template_desc) + return 1; + + /* + * Verify whether the current hash algorithm is supported + * by the 'ima' template. + */ + if (template_len == 3 && strcmp(str, IMA_TEMPLATE_IMA_NAME) == 0 && + ima_hash_algo != HASH_ALGO_SHA1 && ima_hash_algo != HASH_ALGO_MD5) { + pr_err("IMA: template does not support hash alg\n"); + return 1; + } + + ima_template = template_desc; + return 1; +} +__setup("ima_template=", ima_template_setup); static struct ima_template_desc *lookup_template_desc(const char *name) { |