linux_dsm_epyc7002/security/integrity/ima
Mimi Zohar e40ba6d56b firmware: replace call to fw_read_file_contents() with kernel version
Replace the fw_read_file_contents with kernel_file_read_from_path().

Although none of the upstreamed LSMs define a kernel_fw_from_file hook,
IMA is called by the security function to prevent unsigned firmware from
being loaded and to measure/appraise signed firmware, based on policy.

Instead of reading the firmware twice, once for measuring/appraising the
firmware and again for reading the firmware contents into memory, the
kernel_post_read_file() security hook calculates the file hash based on
the in memory file buffer.  The firmware is read once.

This patch removes the LSM kernel_fw_from_file() hook and security call.

Changelog v4+:
- revert dropped buf->size assignment - reported by Sergey Senozhatsky
v3:
- remove kernel_fw_from_file hook
- use kernel_file_read_from_path() - requested by Luis
v2:
- reordered and squashed firmware patches
- fix MAX firmware size (Kees Cook)

Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Acked-by: Kees Cook <keescook@chromium.org>
Acked-by: Luis R. Rodriguez <mcgrof@kernel.org>
2016-02-21 09:03:44 -05:00
..
ima_api.c ima: define a new hook to measure and appraise a file already in memory 2016-02-20 22:35:08 -05:00
ima_appraise.c ima: define a new hook to measure and appraise a file already in memory 2016-02-20 22:35:08 -05:00
ima_crypto.c ima: calculate the hash of a buffer using aynchronous hash(ahash) 2016-02-18 17:14:44 -05:00
ima_fs.c ima: ima_write_policy() limit locking 2016-01-03 13:22:38 -05:00
ima_init.c ima: separate 'security.ima' reading functionality from collect 2016-02-18 17:13:32 -05:00
ima_main.c firmware: replace call to fw_read_file_contents() with kernel version 2016-02-21 09:03:44 -05:00
ima_mok.c security/integrity: make ima/ima_mok.c explicitly non-modular 2015-12-15 10:01:43 -05:00
ima_policy.c ima: define a new hook to measure and appraise a file already in memory 2016-02-20 22:35:08 -05:00
ima_queue.c integrity: fix checkpatch errors 2014-03-07 12:15:45 -05:00
ima_template_lib.c ima: separate 'security.ima' reading functionality from collect 2016-02-18 17:13:32 -05:00
ima_template_lib.h ima: wrap event related data to the new ima_event_data structure 2015-05-21 13:59:28 -04:00
ima_template.c ima: separate 'security.ima' reading functionality from collect 2016-02-18 17:13:32 -05:00
ima.h ima: define a new hook to measure and appraise a file already in memory 2016-02-20 22:35:08 -05:00
Kconfig IMA: allow reading back the current IMA policy 2015-12-15 10:01:43 -05:00
Makefile IMA: create machine owner and blacklist keyrings 2015-12-15 10:01:43 -05:00