kernel/security/integrity/ima/ima_template.c, branch linux-5.1.y

security/integrity: constify some read-only data

2018-10-10T16:56:15Z

Constify some static data that is never modified, so that it is placed in .rodata. Signed-off-by: Eric Biggers Signed-off-by: Mimi Zohar

ima: Fix line continuation format

2017-12-18T14:43:47Z

Line continuations with excess spacing causes unexpected output. Based on commit 6f76b6fcaa60 ("CodingStyle: Document the exception of not splitting user-visible strings, for grepping") recommendation. Signed-off-by: Joe Perches Signed-off-by: Mimi Zohar

ima: use ima_parse_buf() to parse template data

2017-06-21T18:37:12Z

The binary_field_data structure definition has been removed from ima_restore_template_data(). The lengths and data pointers are directly stored into the template_data array of the ima_template_entry structure. For template data, both the number of fields and buffer end checks can be done, as these information are known (respectively from the template descriptor, and from the measurement header field). Signed-off-by: Roberto Sassu Signed-off-by: Mimi Zohar

ima: use ima_parse_buf() to parse measurements headers

2017-06-21T18:37:12Z

The binary_hdr_v1 and binary_data_v1 structures defined in ima_restore_measurement_list() have been replaced with an array of four ima_field_data structures where pcr, digest, template name and template data lengths and pointers are stored. The length of pcr and digest in the ima_field_data array and the bits in the bitmap are set before ima_parse_buf() is called. The ENFORCE_FIELDS bit is set for all entries except the last one (there is still data to parse), and ENFORCE_BUFEND is set only for the last entry. Signed-off-by: Roberto Sassu Signed-off-by: Mimi Zohar

ima: define a canonical binary_runtime_measurements list format

2016-12-20T17:48:45Z

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: support restoring multiple template formats

2016-12-20T17:48:45Z

The configured IMA measurement list template format can be replaced at runtime on the boot command line, including a custom template format. This patch adds support for restoring a measuremement list containing multiple builtin/custom template formats. Link: http://lkml.kernel.org/r/1480554346-29071-9-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: store the builtin/custom template definitions in a list

2016-12-20T17:48:45Z

The builtin and single custom templates are currently stored in an array. In preparation for being able to restore a measurement list containing multiple builtin/custom templates, this patch stores the builtin and custom templates as a linked list. This will permit defining more than one custom template per boot. Link: http://lkml.kernel.org/r/1480554346-29071-8-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: on soft reboot, restore the measurement list

2016-12-20T17:48:43Z

The TPM PCRs are only reset on a hard reboot. In order to validate a TPM's quote after a soft reboot (eg. kexec -e), the IMA measurement list of the running kernel must be saved and restored on boot. This patch restores the measurement list. Link: http://lkml.kernel.org/r/1480554346-29071-3-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

2016-02-18T22:13:32Z

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: added support for new kernel cmdline parameter ima_template_fmt

2014-10-13T12:39:02Z

This patch allows users to provide a custom template format through the new kernel command line parameter 'ima_template_fmt'. If the supplied format is not valid, IMA uses the default template descriptor. Changelog: - v3: - added check for 'fields' and 'num_fields' in template_desc_init_fields() (suggested by Mimi Zohar) - v2: - using template_desc_init_fields() to validate a format string (Roberto Sassu) - updated documentation by stating that only the chosen template descriptor is initialized (Roberto Sassu) - v1: - simplified code of ima_template_fmt_setup() (Roberto Sassu, suggested by Mimi Zohar) Signed-off-by: Roberto Sassu Signed-off-by: Mimi Zohar