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| author | Eric Richter <erichte@linux.vnet.ibm.com> | 2016-06-01 13:14:00 -0500 |
|---|---|---|
| committer | Mimi Zohar <zohar@linux.vnet.ibm.com> | 2016-06-30 01:14:19 -0400 |
| commit | 96d450bbeccda6f32c70bbb9ee54057f68733cad (patch) | |
| tree | d42a489679baa7e4043430cdc610f67d9c5d0369 /security | |
| parent | f786b752098216fedb73ba2905c8cce12358534a (diff) | |
| download | lwn-96d450bbeccda6f32c70bbb9ee54057f68733cad.tar.gz lwn-96d450bbeccda6f32c70bbb9ee54057f68733cad.zip | |
integrity: add measured_pcrs field to integrity cache
To keep track of which measurements have been extended to which PCRs, this
patch defines a new integrity_iint_cache field named measured_pcrs. This
field is a bitmask of the PCRs measured. Each bit corresponds to a PCR
index. For example, bit 10 corresponds to PCR 10.
Signed-off-by: Eric Richter <erichte@linux.vnet.ibm.com>
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Diffstat (limited to 'security')
| -rw-r--r-- | security/integrity/iint.c | 2 | ||||
| -rw-r--r-- | security/integrity/integrity.h | 1 |
2 files changed, 3 insertions, 0 deletions
diff --git a/security/integrity/iint.c b/security/integrity/iint.c index 345b75997e4c..c710d22042f9 100644 --- a/security/integrity/iint.c +++ b/security/integrity/iint.c @@ -79,6 +79,7 @@ static void iint_free(struct integrity_iint_cache *iint) iint->ima_bprm_status = INTEGRITY_UNKNOWN; iint->ima_read_status = INTEGRITY_UNKNOWN; iint->evm_status = INTEGRITY_UNKNOWN; + iint->measured_pcrs = 0; kmem_cache_free(iint_cache, iint); } @@ -159,6 +160,7 @@ static void init_once(void *foo) iint->ima_bprm_status = INTEGRITY_UNKNOWN; iint->ima_read_status = INTEGRITY_UNKNOWN; iint->evm_status = INTEGRITY_UNKNOWN; + iint->measured_pcrs = 0; } static int __init integrity_iintcache_init(void) diff --git a/security/integrity/integrity.h b/security/integrity/integrity.h index 90bc57d796ec..24520b4ef3b0 100644 --- a/security/integrity/integrity.h +++ b/security/integrity/integrity.h @@ -103,6 +103,7 @@ struct integrity_iint_cache { struct inode *inode; /* back pointer to inode in question */ u64 version; /* track inode changes */ unsigned long flags; + unsigned long measured_pcrs; enum integrity_status ima_file_status:4; enum integrity_status ima_mmap_status:4; enum integrity_status ima_bprm_status:4; |