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/linux/Documentation/block/
H A Ddata-integrity.rst2 Data Integrity
16 protocols (SBC Data Integrity Field, SCC protection proposal) as well
18 support for appending integrity metadata to an I/O. The integrity
29 DIF and the other integrity extensions is that the protection format
31 integrity of the I/O and reject it if corruption is detected. This
35 2. The Data Integrity Extensions
40 allow the operating system to interact with the integrity metadata
45 The SCSI Data Integrity Field works by appending 8 bytes of protection
46 information to each sector. The data + integrity metadata is stored
53 encouraged them to allow separation of the data and integrity metadata
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/linux/Documentation/admin-guide/device-mapper/
H A Ddm-integrity.rst2 dm-integrity
5 The dm-integrity target emulates a block device that has additional
6 per-sector tags that can be used for storing integrity information.
8 A general problem with storing integrity tags with every sector is that
9 writing the sector and the integrity tag must be atomic - i.e. in case of
10 crash, either both sector and integrity tag or none of them is written.
12 To guarantee write atomicity, the dm-integrity target uses journal, it
13 writes sector data and integrity tags into a journal, commits the journal
14 and then copies the data and integrity tags to their respective location.
16 The dm-integrity target can be used with the dm-crypt target - in this
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H A Ddm-crypt.rst137 integrity:<bytes>:<type>
139 in per-bio integrity structure. This metadata must by provided
140 by underlying dm-integrity target.
146 integrity for the encrypted device. The additional space is then
150 Optionally set the integrity key size if it differs from the digest size.
169 Use an integrity key of <bytes> size instead of using an integrity key size
H A Ddm-ima.rst15 target types like crypt, verity, integrity etc. Each of these target
49 /sys/kernel/security/integrity/ima/ascii_runtime_measurements
50 /sys/kernel/security/integrity/ima/binary_runtime_measurements
62 TEMPLATE_NAME := Template name that registered the integrity value (e.g. ima-buf).
143 target_name := Name of the target. 'linear', 'crypt', 'integrity' etc.
331 #. integrity
418 3. integrity
421 section above) has the following data format for 'integrity' target.
430 target_name := "target_name=integrity"
450 When a 'integrity' target is loaded, then IMA ASCII measurement log will have an entry
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H A Dverity.rst5 Device-Mapper's "verity" target provides transparent integrity checking of
32 This is the device containing data, the integrity of which needs to be
178 Cryptographic hashes are used to assert the integrity of the device on a
186 integrity checking is essential.
221 It is expected that a user-space tool will verify the integrity of the
/linux/security/integrity/
H A DMakefile3 # Makefile for caching inode integrity data (iint)
6 obj-$(CONFIG_INTEGRITY) += integrity.o
8 integrity-y := iint.o
9 integrity-$(CONFIG_INTEGRITY_AUDIT) += integrity_audit.o
10 integrity-$(CONFIG_INTEGRITY_SIGNATURE) += digsig.o
11 integrity-$(CONFIG_INTEGRITY_ASYMMETRIC_KEYS) += digsig_asymmetric.o
12 integrity-$(CONFIG_INTEGRITY_PLATFORM_KEYRING) += platform_certs/platform_keyring.o
13 integrity-$(CONFIG_INTEGRITY_MACHINE_KEYRING) += platform_certs/machine_keyring.o
14 integrity-$(CONFIG_LOAD_UEFI_KEYS) += platform_certs/efi_parser.o \
17 integrity-$(CONFIG_LOAD_IPL_KEYS) += platform_certs/load_ipl_s390.o
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H A DKconfig3 config INTEGRITY config
4 bool "Integrity subsystem"
8 This option enables the integrity subsystem, which is comprised
9 of a number of different components including the Integrity
17 if INTEGRITY
47 bool "Require all keys on the integrity keyrings be signed"
120 bool "Enables integrity auditing support "
124 In addition to enabling integrity auditing support, this
126 controls the level of integrity auditing messages.
127 0 - basic integrity auditing messages (default)
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H A Diint.c9 * - initialize the integrity directory in securityfs
13 #include "integrity.h"
32 * integrity_load_keys - load integrity keys hook
50 integrity_dir = securityfs_create_dir("integrity", NULL); in integrity_fs_init()
55 pr_err("Unable to create integrity sysfs dir: %d\n", in integrity_fs_init()
/linux/Documentation/security/
H A Dipe.rst3 Integrity Policy Enforcement (IPE) - Kernel Documentation
17 strong integrity guarantees over both the executable code, and specific
19 specific data files would not be readable unless they passed integrity
22 of what would provide the integrity claims. At the time, there were two
23 main mechanisms considered that could guarantee integrity for the system
30 over IMA+EVM as the *integrity mechanism* in the original use case of IPE
39 files), cannot be enforced to be globally integrity verified. This means
41 enforce the integrity policy, or it should not.
44 policy would indicate what labels required integrity verification, which
48 file should be subject to integrity policy.
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H A Dsnp-tdx-threat-model.rst26 security technologies that aim to protect the confidentiality and integrity
46 integrity for the VM's guest memory and execution state (vCPU registers),
51 …w.amd.com/system/files/techdocs/sev-snp-strengthening-vm-isolation-with-integrity-protection-and-m…
163 integrity protection. This threat model assumes that those features are
168 1. Preserve the confidentiality and integrity of CoCo guest's private
201 data should also be considered untrusted until its integrity and
226 This allows the host to break the integrity of the code running
233 integrity or freshness of such data.
/linux/block/
H A Dbio-integrity-auto.c6 * Automatically generate and verify integrity data on PI capable devices if the
8 * data integrity even if the file system (or other user of the block device) is
11 #include <linux/blk-integrity.h>
62 pr_warn_once("%s: unknown integrity checksum type:%d\n", in bi_offload_capable()
71 * __bio_integrity_endio - Integrity I/O completion function
75 * integrity is a time-consuming task which must be run in process context.
97 * bio_integrity_prep - Prepare bio for integrity I/O
100 * Checks if the bio already has an integrity payload attached. If it does, the
103 * Otherwise allocates integrity payload and for writes the integrity metadat
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H A Dblk-settings.c9 #include <linux/blk-integrity.h>
127 * Maximum size of I/O that needs a block layer integrity buffer. Limited
128 * by the number of intervals for which we can fit the integrity buffer into
135 (BLK_INTEGRITY_MAX_SIZE / lim->integrity.metadata_size) << in max_integrity_io_size()
136 lim->integrity.interval_exp); in max_integrity_io_size()
141 struct blk_integrity *bi = &lim->integrity; in blk_validate_integrity_limits()
154 pr_warn("integrity support disabled.\n"); in blk_validate_integrity_limits()
211 * The block layer automatically adds integrity data for bios that don't in blk_validate_integrity_limits()
213 * metadata segment can cover the integrity data for the entire I/O. in blk_validate_integrity_limits()
566 if (q->crypto_profile && lim->integrity.tag_size) { in queue_limits_commit_update()
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H A Dblk-mq-dma.c5 #include <linux/blk-integrity.h>
319 * blk_rq_integrity_dma_map_iter_start - map the first integrity DMA segment
326 * Start DMA mapping @req integrity data to @dma_dev. @state and @iter are
345 unsigned len = bio_integrity_bytes(&req->q->limits.integrity, in blk_rq_integrity_dma_map_iter_start()
360 * blk_rq_integrity_dma_map_iter_next - map the next integrity DMA segment for
367 * Iterate to the next integrity mapping after a previous call to
393 * blk_rq_map_integrity_sg - Map integrity metadata into a scatterlist
397 * Description: Map the integrity vectors in request into a
429 * is bigger than number of req's physical integrity segments in blk_rq_map_integrity_sg()
H A Dt10-pi.c8 #include <linux/blk-integrity.h>
127 struct blk_integrity *bi = &rq->q->limits.integrity; in t10_pi_type1_prepare()
178 struct blk_integrity *bi = &rq->q->limits.integrity; in t10_pi_type1_complete()
301 struct blk_integrity *bi = &rq->q->limits.integrity; in ext_pi_type1_prepare()
341 struct blk_integrity *bi = &rq->q->limits.integrity; in ext_pi_type1_complete()
451 struct blk_integrity *bi = &rq->q->limits.integrity; in blk_integrity_prepare()
464 struct blk_integrity *bi = &rq->q->limits.integrity; in blk_integrity_complete()
/linux/Documentation/ABI/stable/
H A Dsysfs-class-tpm4 Contact: linux-integrity@vger.kernel.org
12 Contact: linux-integrity@vger.kernel.org
24 Contact: linux-integrity@vger.kernel.org
32 Contact: linux-integrity@vger.kernel.org
49 Contact: linux-integrity@vger.kernel.org
72 Contact: linux-integrity@vger.kernel.org
81 Contact: linux-integrity@vger.kernel.org
89 Contact: linux-integrity@vger.kernel.org
112 Contact: linux-integrity@vger.kernel.org
164 Contact: linux-integrity@vger.kernel.org
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/linux/security/integrity/ima/
H A DKconfig2 # IBM Integrity Measurement Architecture
5 bool "Integrity Measurement Architecture(IMA)"
18 The Trusted Computing Group(TCG) runtime Integrity
26 an aggregate integrity value over this list inside the
53 that IMA uses to maintain the integrity aggregate of the
88 prompt "Default integrity hash algorithm"
92 list, integrity appraisal and audit log. The compiled default
145 bool "Appraise integrity measurements"
148 This option enables local measurement integrity appraisal.
154 For more information on integrity appraisa
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H A Dima_main.c3 * Integrity Measurement Architecture
480 * On success return 0. On integrity appraisal error, assuming the file
517 * this point. Eliminate this integrity gap by denying the mprotect
578 * On success return 0. On integrity appraisal error, assuming the file
608 * On success return 0. On integrity appraisal error, assuming the file
625 * and appraise the integrity of a file to be executed by script interpreters.
626 * Unlike any of the other LSM hooks where the kernel enforces file integrity,
627 * enforcing file integrity is left up to the discretion of the script
630 * On success return 0. On integrity appraisal error, assuming the file
655 * On success return 0. On integrity appraisal error, assuming the file
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/linux/Documentation/staging/
H A Dxz.rst13 for executable code. CRC32 is supported for integrity checking.
53 Since the XZ Embedded supports only streams with CRC32 or no integrity
54 check, make sure that you don't use some other integrity check type
62 which will verify the integrity of the uncompressed data anyway.
63 Double checking the integrity would probably be waste of CPU cycles.
65 by the decoder; you can only change the integrity check type (or
/linux/include/linux/
H A Dt10-pi.h45 rq->q->limits.integrity.interval_exp) in t10_pi_ref_tag()
46 shift = rq->q->limits.integrity.interval_exp; in t10_pi_ref_tag()
70 rq->q->limits.integrity.interval_exp) in ext_pi_ref_tag()
71 shift = rq->q->limits.integrity.interval_exp; in ext_pi_ref_tag()
/linux/Documentation/translations/zh_CN/block/
H A Ddata-integrity.rst4 :Original: Documentation/block/data-integrity.rst
117 块设备可以在 queue_limits 结构中的 integrity 子结构中设置完整性信息。
135 /sys/block/<bdev>/integrity/write_generate
139 /sys/block/<bdev>/integrity/read_verify
170 integrity bio_vec list 中存储多少页保护数据（类似 bio_alloc）。
/linux/drivers/md/
H A Ddm-io-rewind.c8 #include <linux/blk-integrity.h>
48 * dm_bio_integrity_rewind - Rewind integrity vector
49 * @bio: bio whose integrity vector to update
52 * Description: This function calculates how many integrity bytes the
54 * integrity vector accordingly.
/linux/security/integrity/evm/
H A DKconfig13 integrity attacks.
57 /sys/kernel/security/integrity/evm/evm_xattrs.
68 verify EVM integrity starting from the 'init' process. The
/linux/drivers/scsi/
H A Dsd_dif.c3 * sd_dif.c - SCSI Data Integrity Field
9 #include <linux/blk-integrity.h>
31 struct blk_integrity *bi = &lim->integrity; in sd_dif_config_host()
/linux/tools/testing/selftests/net/
H A Dtcp_mmap.c89 static int integrity; /* -i option: sender and receiver compute sha256 over the data.*/ variable
205 if (integrity) { in child_thread()
233 if (integrity) in child_thread()
249 if (integrity) in child_thread()
268 if (integrity) in child_thread()
280 if (integrity) { in child_thread()
504 integrity = 1; in main()
581 if (integrity) { in main()
601 if (integrity) in main()
605 if (integrity && total == FILE_SZ) { in main()
/linux/Documentation/security/keys/
H A Dtrusted-encrypted.rst11 convenience, and are integrity verified.
105 * Optional binding to platform integrity state
109 Keys can be optionally sealed to specified PCR (integrity measurement)
110 values, and only unsealed by the TPM, if PCRs and blob integrity
119 Relies on Secure/Trusted boot process for platform integrity. It can
125 for platform integrity.
130 platform integrity.
450 compromised by a user level problem, and when sealed to a platform integrity

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