From 19f8a84713edc1d27ea05be00effb97b8f1ef207 Mon Sep 17 00:00:00 2001 From: Mimi Zohar Date: Fri, 15 Jan 2016 10:17:12 -0500 Subject: ima: measure and appraise the IMA policy itself Add support for measuring and appraising the IMA policy itself. Changelog v4: - use braces on both if/else branches, even if single line on one of the branches - Dmitry - Use the id mapping - Dmitry Signed-off-by: Mimi Zohar Acked-by: Petko Manolov Acked-by: Dmitry Kasatkin --- security/integrity/ima/ima_policy.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) (limited to 'security/integrity/ima/ima_policy.c') diff --git a/security/integrity/ima/ima_policy.c b/security/integrity/ima/ima_policy.c index 646134cdf3e8..c1b5d00fe5d4 100644 --- a/security/integrity/ima/ima_policy.c +++ b/security/integrity/ima/ima_policy.c @@ -114,6 +114,7 @@ static struct ima_rule_entry default_measurement_rules[] = { .uid = GLOBAL_ROOT_UID, .flags = IMA_FUNC | IMA_INMASK | IMA_UID}, {.action = MEASURE, .func = MODULE_CHECK, .flags = IMA_FUNC}, {.action = MEASURE, .func = FIRMWARE_CHECK, .flags = IMA_FUNC}, + {.action = MEASURE, .func = POLICY_CHECK, .flags = IMA_FUNC}, }; static struct ima_rule_entry default_appraise_rules[] = { @@ -618,6 +619,8 @@ static int ima_parse_rule(char *rule, struct ima_rule_entry *entry) else if (strcmp(args[0].from, "KEXEC_INITRAMFS_CHECK") == 0) entry->func = KEXEC_INITRAMFS_CHECK; + else if (strcmp(args[0].from, "POLICY_CHECK") == 0) + entry->func = POLICY_CHECK; else result = -EINVAL; if (!result) @@ -776,6 +779,8 @@ static int ima_parse_rule(char *rule, struct ima_rule_entry *entry) temp_ima_appraise |= IMA_APPRAISE_MODULES; else if (entry->func == FIRMWARE_CHECK) temp_ima_appraise |= IMA_APPRAISE_FIRMWARE; + else if (entry->func == POLICY_CHECK) + temp_ima_appraise |= IMA_APPRAISE_POLICY; audit_log_format(ab, "res=%d", !result); audit_log_end(ab); return result; @@ -862,7 +867,8 @@ static char *mask_tokens[] = { enum { func_file = 0, func_mmap, func_bprm, func_module, func_firmware, func_post, - func_kexec_kernel, func_kexec_initramfs + func_kexec_kernel, func_kexec_initramfs, + func_policy }; static char *func_tokens[] = { @@ -873,6 +879,7 @@ static char *func_tokens[] = { "FIRMWARE_CHECK", "KEXEC_KERNEL_CHECK", "KEXEC_INITRAMFS_CHECK", + "POLICY_CHECK", "POST_SETATTR" }; @@ -944,6 +951,9 @@ static void policy_func_show(struct seq_file *m, enum ima_hooks func) case KEXEC_INITRAMFS_CHECK: seq_printf(m, pt(Opt_func), ft(func_kexec_initramfs)); break; + case POLICY_CHECK: + seq_printf(m, pt(Opt_func), ft(func_policy)); + break; default: snprintf(tbuf, sizeof(tbuf), "%d", func); seq_printf(m, pt(Opt_func), tbuf); -- cgit v1.2.3