blackbird-op-linux/security/integrity/ima/ima_template_lib.c, branch v5.2

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441

2019-06-05T15:37:17+00:00

Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation version 2 of the license extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 315 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Allison Randal Reviewed-by: Armijn Hemel Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190531190115.503150771@linutronix.de Signed-off-by: Greg Kroah-Hartman

security: mark expected switch fall-throughs and add a missing break

2019-02-22T17:56:09+00:00

In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. This patch fixes the following warnings: security/integrity/ima/ima_template_lib.c:85:10: warning: this statement may fall through [-Wimplicit-fallthrough=] security/integrity/ima/ima_policy.c:940:18: warning: this statement may fall through [-Wimplicit-fallthrough=] security/integrity/ima/ima_policy.c:943:7: warning: this statement may fall through [-Wimplicit-fallthrough=] security/integrity/ima/ima_policy.c:972:21: warning: this statement may fall through [-Wimplicit-fallthrough=] security/integrity/ima/ima_policy.c:974:7: warning: this statement may fall through [-Wimplicit-fallthrough=] security/smack/smack_lsm.c:3391:9: warning: this statement may fall through [-Wimplicit-fallthrough=] security/apparmor/domain.c:569:6: warning: this statement may fall through [-Wimplicit-fallthrough=] Warning level 3 was used: -Wimplicit-fallthrough=3 Also, add a missing break statement to fix the following warning: security/integrity/ima/ima_appraise.c:116:26: warning: this statement may fall through [-Wimplicit-fallthrough=] Acked-by: John Johansen Acked-by: Casey Schaufler Signed-off-by: Gustavo A. R. Silva Acked-by: Mimi Zohar Signed-off-by: James Morris

ima: Unify logging

2018-05-17T11:49:12+00:00

Define pr_fmt everywhere. Signed-off-by: Petr Vorel Reported-by: Stephen Rothwell (powerpc build error) Signed-off-by: Mimi Zohar Changelog: Previous pr_fmt definition was too late and caused problems in powerpc allyesconfg build.

ima: Simplify ima_eventsig_init()

2018-03-25T11:26:29+00:00

The "goto out" statement doesn't have any purpose since there's no cleanup to be done when returning early, so remove it. This also makes the rc variable unnecessary so remove it as well. Also, the xattr_len and fmt variables are redundant so remove them as well. Signed-off-by: Thiago Jung Bauermann Acked-by: Serge Hallyn Signed-off-by: Mimi Zohar

ima: introduce ima_parse_buf()

2017-06-21T18:37:12+00:00

ima_parse_buf() takes as input the buffer start and end pointers, and stores the result in a static array of ima_field_data structures, where the len field contains the length parsed from the buffer, and the data field contains the address of the buffer just after the length. Optionally, the function returns the current value of the buffer pointer and the number of array elements written. A bitmap has been added as parameter of ima_parse_buf() to handle the cases where the length is not prepended to data. Each bit corresponds to an element of the ima_field_data array. If a bit is set, the length is not parsed from the buffer, but is read from the corresponding element of the array (the length must be set before calling the function). ima_parse_buf() can perform three checks upon request by callers, depending on the enforce mask passed to it: - ENFORCE_FIELDS: matching of number of fields (length-data combination) - there must be enough data in the buffer to parse the number of fields requested (output: current value of buffer pointer) - ENFORCE_BUFEND: matching of buffer end - the ima_field_data array must be large enough to contain lengths and data pointers for the amount of data requested (output: number of fields written) - ENFORCE_FIELDS | ENFORCE_BUFEND: matching of both Use cases - measurement entry header: ENFORCE_FIELDS | ENFORCE_BUFEND - four fields must be parsed: pcr, digest, template name, template data - ENFORCE_BUFEND is enforced only for the last measurement entry - template digest (Crypto Agile): ENFORCE_BUFEND - since only the total template digest length is known, the function parses length-data combinations until the buffer end is reached - template data: ENFORCE_FIELDS | ENFORCE_BUFEND - since the number of fields and the total template data length are known, the function can perform both checks Signed-off-by: Roberto Sassu Signed-off-by: Mimi Zohar

ima: define a canonical binary_runtime_measurements list format

2016-12-20T17:48:45+00:00

The IMA binary_runtime_measurements list is currently in platform native format. To allow restoring a measurement list carried across kexec with a different endianness than the targeted kernel, this patch defines little-endian as the canonical format. For big endian systems wanting to save/restore the measurement list from a system with a different endianness, a new boot command line parameter named "ima_canonical_fmt" is defined. Considerations: use of the "ima_canonical_fmt" boot command line option will break existing userspace applications on big endian systems expecting the binary_runtime_measurements list to be in platform native format. Link: http://lkml.kernel.org/r/1480554346-29071-10-git-send-email-zohar@linux.vnet.ibm.com Signed-off-by: Mimi Zohar Acked-by: Dmitry Kasatkin Cc: Thiago Jung Bauermann Cc: "Eric W. Biederman" Cc: Andreas Steffen Cc: Josh Sklar Cc: Dave Young Cc: Vivek Goyal Cc: Baoquan He Cc: Michael Ellerman Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: Stewart Smith Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

ima: separate 'security.ima' reading functionality from collect

2016-02-18T22:13:32+00:00

Instead of passing pointers to pointers to ima_collect_measurent() to read and return the 'security.ima' xattr value, this patch moves the functionality to the calling process_measurement() to directly read the xattr and pass only the hash algo to the ima_collect_measurement(). Signed-off-by: Dmitry Kasatkin Signed-off-by: Mimi Zohar

ima: fix ima_show_template_data_ascii()

2015-06-16T12:18:21+00:00

This patch fixes a bug introduced in "4d7aeee ima: define new template ima-ng and template fields d-ng and n-ng". Changelog: - change int to uint32 (Roberto Sassu's suggestion) Signed-off-by: Mimi Zohar Signed-off-by: Roberto Sassu Cc: stable@vger.kernel.org # 3.13

ima: pass iint to ima_add_violation()

2015-05-21T17:59:29+00:00

This patch adds the iint associated to the current inode as a new parameter of ima_add_violation(). The passed iint is always not NULL if a violation is detected. This modification will be used to determine the inode for which there is a violation. Since the 'd' and 'd-ng' template field init() functions were detecting a violation from the value of the iint pointer, they now check the new field 'violation', added to the 'ima_event_data' structure. Changelog: - v1: - modified an old comment (Roberto Sassu) Signed-off-by: Roberto Sassu Signed-off-by: Mimi Zohar

ima: wrap event related data to the new ima_event_data structure

2015-05-21T17:59:28+00:00

All event related data has been wrapped into the new 'ima_event_data' structure. The main benefit of this patch is that a new information can be made available to template fields initialization functions by simply adding a new field to the new structure instead of modifying the definition of those functions. Changelog: - v2: - f_dentry replaced with f_path.dentry (Roberto Sassu) - removed declaration of temporary variables in template field functions when possible (suggested by Dmitry Kasatkin) Signed-off-by: Roberto Sassu Signed-off-by: Mimi Zohar