diff options
| author | Mimi Zohar <zohar@linux.vnet.ibm.com> | 2012-12-03 17:08:11 -0500 |
|---|---|---|
| committer | Mimi Zohar <zohar@linux.vnet.ibm.com> | 2013-01-22 16:10:36 -0500 |
| commit | d79d72e02485c00b886179538dc8deaffa3be507 (patch) | |
| tree | 92690d5cbd6e4a0a3bee369033fe18d9b2d065f7 /security/integrity/iint.c | |
| parent | f578c08ec959cb0cdadf02bdc9689a4df3e9b9d4 (diff) | |
ima: per hook cache integrity appraisal status
With the new IMA policy 'appraise_type=' option, different hooks
can require different methods for appraising a file's integrity.
For example, the existing 'ima_appraise_tcb' policy defines a
generic rule, requiring all root files to be appraised, without
specfying the appraisal method. A more specific rule could require
all kernel modules, for example, to be signed.
appraise fowner=0 func=MODULE_CHECK appraise_type=imasig
appraise fowner=0
As a result, the integrity appraisal results for the same inode, but
for different hooks, could differ. This patch caches the integrity
appraisal results on a per hook basis.
Changelog v2:
- Rename ima_cache_status() to ima_set_cache_status()
- Rename and move get_appraise_status() to ima_get_cache_status()
Changelog v0:
- include IMA_APPRAISE/APPRAISED_SUBMASK in IMA_DO/DONE_MASK (Dmitry)
- Support independent MODULE_CHECK appraise status.
- fixed IMA_XXXX_APPRAISE/APPRAISED flags
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@intel.com>
Diffstat (limited to 'security/integrity/iint.c')
| -rw-r--r-- | security/integrity/iint.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/security/integrity/iint.c b/security/integrity/iint.c index d82a5a13d85..74522dbd10a 100644 --- a/security/integrity/iint.c +++ b/security/integrity/iint.c @@ -72,7 +72,10 @@ static void iint_free(struct integrity_iint_cache *iint) { iint->version = 0; iint->flags = 0UL; - iint->ima_status = INTEGRITY_UNKNOWN; + iint->ima_file_status = INTEGRITY_UNKNOWN; + iint->ima_mmap_status = INTEGRITY_UNKNOWN; + iint->ima_bprm_status = INTEGRITY_UNKNOWN; + iint->ima_module_status = INTEGRITY_UNKNOWN; iint->evm_status = INTEGRITY_UNKNOWN; kmem_cache_free(iint_cache, iint); } @@ -149,7 +152,10 @@ static void init_once(void *foo) memset(iint, 0, sizeof *iint); iint->version = 0; iint->flags = 0UL; - iint->ima_status = INTEGRITY_UNKNOWN; + iint->ima_file_status = INTEGRITY_UNKNOWN; + iint->ima_mmap_status = INTEGRITY_UNKNOWN; + iint->ima_bprm_status = INTEGRITY_UNKNOWN; + iint->ima_module_status = INTEGRITY_UNKNOWN; iint->evm_status = INTEGRITY_UNKNOWN; } |