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linux/security/integrity/ima
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Mimi Zohar fd6170bf43 ima: relax requiring a file signature for new files with zero length 
[ Upstream commit b7e27bc1d4 ]

Custom policies can require file signatures based on LSM labels.  These
files are normally created and only afterwards labeled, requiring them
to be signed.

Instead of requiring file signatures based on LSM labels, entire
filesystems could require file signatures.  In this case, we need the
ability of writing new files without requiring file signatures.

The definition of a "new" file was originally defined as any file with
a length of zero.  Subsequent patches redefined a "new" file to be based
on the FILE_CREATE open flag.  By combining the open flag with a file
size of zero, this patch relaxes the file signature requirement.

Fixes: 1ac202e978 ima: accept previously set IMA_NEW_FILE
Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2018-03-19 08:42:56 +01:00
..
ima.h ima: Simplify policy_func_show. 2017-06-21 14:37:12 -04:00
ima_api.c ima: allow to check MAY_APPEND 2017-01-27 14:17:21 -05:00
ima_appraise.c ima: relax requiring a file signature for new files with zero length 2018-03-19 08:42:56 +01:00
ima_crypto.c ima: platform-independent hash value 2016-12-20 09:48:46 -08:00
ima_fs.c ima: use memdup_user_nul 2017-06-21 14:37:12 -04:00
ima_init.c ima: on soft reboot, restore the measurement list 2016-12-20 09:48:43 -08:00
ima_kexec.c ima: define a canonical binary_runtime_measurements list format 2016-12-20 09:48:45 -08:00
ima_main.c ima: fix hash algorithm initialization 2017-12-10 13:40:38 +01:00
ima_mok.c KEYS: Use structure to capture key restriction function and data 2017-04-04 14:10:10 -07:00
ima_policy.c ima/policy: fix parsing of fsuuid 2018-02-03 17:38:53 +01:00
ima_queue.c ima: fix get_binary_runtime_size() 2017-06-21 14:37:12 -04:00
ima_template.c ima: use ima_parse_buf() to parse template data 2017-06-21 14:37:12 -04:00
ima_template_lib.c ima: introduce ima_parse_buf() 2017-06-21 14:37:12 -04:00
ima_template_lib.h ima: introduce ima_parse_buf() 2017-06-21 14:37:12 -04:00
Kconfig IMA: Correct Kconfig dependencies for hash selection 2017-06-21 14:37:12 -04:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00