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authorYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 12:17:53 -0700
committerYunhong Jiang <yunhong.jiang@intel.com>2015-08-04 15:44:42 -0700
commit9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch)
tree1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/Documentation/ABI/testing/ima_policy
parent98260f3884f4a202f9ca5eabed40b1354c489b29 (diff)
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
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+What: security/ima/policy
+Date: May 2008
+Contact: Mimi Zohar <zohar@us.ibm.com>
+Description:
+ The Trusted Computing Group(TCG) runtime Integrity
+ Measurement Architecture(IMA) maintains a list of hash
+ values of executables and other sensitive system files
+ loaded into the run-time of this system. At runtime,
+ the policy can be constrained based on LSM specific data.
+ Policies are loaded into the securityfs file ima/policy
+ by opening the file, writing the rules one at a time and
+ then closing the file. The new policy takes effect after
+ the file ima/policy is closed.
+
+ IMA appraisal, if configured, uses these file measurements
+ for local measurement appraisal.
+
+ rule format: action [condition ...]
+
+ action: measure | dont_measure | appraise | dont_appraise | audit
+ condition:= base | lsm [option]
+ base: [[func=] [mask=] [fsmagic=] [fsuuid=] [uid=]
+ [fowner]]
+ lsm: [[subj_user=] [subj_role=] [subj_type=]
+ [obj_user=] [obj_role=] [obj_type=]]
+ option: [[appraise_type=]] [permit_directio]
+
+ base: func:= [BPRM_CHECK][MMAP_CHECK][FILE_CHECK][MODULE_CHECK]
+ [FIRMWARE_CHECK]
+ mask:= [MAY_READ] [MAY_WRITE] [MAY_APPEND] [MAY_EXEC]
+ fsmagic:= hex value
+ fsuuid:= file system UUID (e.g 8bcbe394-4f13-4144-be8e-5aa9ea2ce2f6)
+ uid:= decimal value
+ fowner:=decimal value
+ lsm: are LSM specific
+ option: appraise_type:= [imasig]
+
+ default policy:
+ # PROC_SUPER_MAGIC
+ dont_measure fsmagic=0x9fa0
+ dont_appraise fsmagic=0x9fa0
+ # SYSFS_MAGIC
+ dont_measure fsmagic=0x62656572
+ dont_appraise fsmagic=0x62656572
+ # DEBUGFS_MAGIC
+ dont_measure fsmagic=0x64626720
+ dont_appraise fsmagic=0x64626720
+ # TMPFS_MAGIC
+ dont_measure fsmagic=0x01021994
+ dont_appraise fsmagic=0x01021994
+ # RAMFS_MAGIC
+ dont_measure fsmagic=0x858458f6
+ dont_appraise fsmagic=0x858458f6
+ # SECURITYFS_MAGIC
+ dont_measure fsmagic=0x73636673
+ dont_appraise fsmagic=0x73636673
+
+ measure func=BPRM_CHECK
+ measure func=FILE_MMAP mask=MAY_EXEC
+ measure func=FILE_CHECK mask=MAY_READ uid=0
+ measure func=MODULE_CHECK
+ measure func=FIRMWARE_CHECK
+ appraise fowner=0
+
+ The default policy measures all executables in bprm_check,
+ all files mmapped executable in file_mmap, and all files
+ open for read by root in do_filp_open. The default appraisal
+ policy appraises all files owned by root.
+
+ Examples of LSM specific definitions:
+
+ SELinux:
+ # SELINUX_MAGIC
+ dont_measure fsmagic=0xf97cff8c
+ dont_appraise fsmagic=0xf97cff8c
+
+ dont_measure obj_type=var_log_t
+ dont_appraise obj_type=var_log_t
+ dont_measure obj_type=auditd_log_t
+ dont_appraise obj_type=auditd_log_t
+ measure subj_user=system_u func=FILE_CHECK mask=MAY_READ
+ measure subj_role=system_r func=FILE_CHECK mask=MAY_READ
+
+ Smack:
+ measure subj_user=_ func=FILE_CHECK mask=MAY_READ