diff options
| -rw-r--r-- | security/integrity/ima/ima_appraise.c | 2 | ||||
| -rw-r--r-- | security/integrity/ima/ima_main.c | 4 | ||||
| -rw-r--r-- | security/integrity/ima/ima_policy.c | 21 | ||||
| -rw-r--r-- | security/integrity/integrity.h | 18 |
4 files changed, 26 insertions, 19 deletions
diff --git a/security/integrity/ima/ima_appraise.c b/security/integrity/ima/ima_appraise.c index 4cdf36ad884..0aa43bde441 100644 --- a/security/integrity/ima/ima_appraise.c +++ b/security/integrity/ima/ima_appraise.c @@ -232,7 +232,7 @@ static void ima_reset_appraise_flags(struct inode *inode) if (!iint) return; - iint->flags &= ~(IMA_COLLECTED | IMA_APPRAISED | IMA_MEASURED); + iint->flags &= ~IMA_DONE_MASK; return; } diff --git a/security/integrity/ima/ima_main.c b/security/integrity/ima/ima_main.c index 60b047e96f4..5da08b75d36 100644 --- a/security/integrity/ima/ima_main.c +++ b/security/integrity/ima/ima_main.c @@ -117,7 +117,7 @@ static void ima_check_last_writer(struct integrity_iint_cache *iint, mutex_lock(&inode->i_mutex); if (atomic_read(&inode->i_writecount) == 1 && iint->version != inode->i_version) { - iint->flags &= ~(IMA_COLLECTED | IMA_APPRAISED | IMA_MEASURED); + iint->flags &= ~IMA_DONE_MASK; if (iint->flags & IMA_APPRAISE) ima_update_xattr(iint, file); } @@ -173,7 +173,7 @@ static int process_measurement(struct file *file, const unsigned char *filename, /* Determine if already appraised/measured based on bitmask * (IMA_MEASURE, IMA_MEASURED, IMA_APPRAISE, IMA_APPRAISED) */ iint->flags |= action; - action &= ~((iint->flags & (IMA_MEASURED | IMA_APPRAISED)) >> 1); + action &= ~((iint->flags & IMA_DONE_MASK) >> 1); /* Nothing to do, just return existing appraised status */ if (!action) { diff --git a/security/integrity/ima/ima_policy.c b/security/integrity/ima/ima_policy.c index 0d6d60b4ba6..f46f685a171 100644 --- a/security/integrity/ima/ima_policy.c +++ b/security/integrity/ima/ima_policy.c @@ -26,13 +26,11 @@ #define IMA_UID 0x0008 #define IMA_FOWNER 0x0010 -#define UNKNOWN 0 -#define MEASURE 1 /* same as IMA_MEASURE */ -#define DONT_MEASURE 2 -#define MEASURE_MASK 3 -#define APPRAISE 4 /* same as IMA_APPRAISE */ -#define DONT_APPRAISE 8 -#define APPRAISE_MASK 12 +#define UNKNOWN 0 +#define MEASURE 0x0001 /* same as IMA_MEASURE */ +#define DONT_MEASURE 0x0002 +#define APPRAISE 0x0004 /* same as IMA_APPRAISE */ +#define DONT_APPRAISE 0x0008 #define MAX_LSM_RULES 6 enum lsm_rule_types { LSM_OBJ_USER, LSM_OBJ_ROLE, LSM_OBJ_TYPE, @@ -209,9 +207,12 @@ int ima_match_policy(struct inode *inode, enum ima_hooks func, int mask, if (!ima_match_rules(entry, inode, func, mask)) continue; - action |= (entry->action & (IMA_APPRAISE | IMA_MEASURE)); - actmask &= (entry->action & APPRAISE_MASK) ? - ~APPRAISE_MASK : ~MEASURE_MASK; + action |= entry->action & IMA_DO_MASK; + if (entry->action & IMA_DO_MASK) + actmask &= ~(entry->action | entry->action << 1); + else + actmask &= ~(entry->action | entry->action >> 1); + if (!actmask) break; } diff --git a/security/integrity/integrity.h b/security/integrity/integrity.h index 4eec1b14193..564ba7db5f6 100644 --- a/security/integrity/integrity.h +++ b/security/integrity/integrity.h @@ -15,13 +15,19 @@ #include <linux/integrity.h> #include <crypto/sha.h> +/* iint action cache flags */ +#define IMA_MEASURE 0x0001 +#define IMA_MEASURED 0x0002 +#define IMA_APPRAISE 0x0004 +#define IMA_APPRAISED 0x0008 +/*#define IMA_COLLECT 0x0010 do not use this flag */ +#define IMA_COLLECTED 0x0020 + /* iint cache flags */ -#define IMA_MEASURE 0x01 -#define IMA_MEASURED 0x02 -#define IMA_APPRAISE 0x04 -#define IMA_APPRAISED 0x08 -#define IMA_COLLECTED 0x10 -#define IMA_DIGSIG 0x20 +#define IMA_DIGSIG 0x0100 + +#define IMA_DO_MASK (IMA_MEASURE | IMA_APPRAISE) +#define IMA_DONE_MASK (IMA_MEASURED | IMA_APPRAISED | IMA_COLLECTED) enum evm_ima_xattr_type { IMA_XATTR_DIGEST = 0x01, |