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ima: rework CONFIG_IMA dependency block 

Changing the direct dependencies of IMA_BLACKLIST_KEYRING and
IMA_LOAD_X509 caused them to no longer depend on IMA, but a
a configuration without IMA results in link failures:

arm-linux-gnueabi-ld: security/integrity/iint.o: in function `integrity_load_keys':
iint.c:(.init.text+0xd8): undefined reference to `ima_load_x509'

aarch64-linux-ld: security/integrity/digsig_asymmetric.o: in function `asymmetric_verify':
digsig_asymmetric.c:(.text+0x104): undefined reference to `ima_blacklist_keyring'

Adding explicit dependencies on IMA would fix this, but a more reliable
way to do this is to enclose the entire Kconfig file in an 'if IMA' block.
This also allows removing the existing direct dependencies.

Fixes: be210c6d35 ("ima: Finish deprecation of IMA_TRUSTED_KEYRING Kconfig")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
This commit is contained in:
Arnd Bergmann 2023-09-27 09:22:14 +02:00 committed by Mimi Zohar
parent be210c6d35
commit 91e326563e
1 changed files with 6 additions and 12 deletions
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18
security/integrity/ima/Kconfig
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@ -29,9 +29,11 @@ config IMA
to learn more about IMA.
If unsure, say N.
if IMA
config IMA_KEXEC
bool "Enable carrying the IMA measurement list across a soft boot"
depends on IMA && TCG_TPM && HAVE_IMA_KEXEC
depends on TCG_TPM && HAVE_IMA_KEXEC
default n
help
TPM PCRs are only reset on a hard reboot. In order to validate
@ -43,7 +45,6 @@ config IMA_KEXEC
config IMA_MEASURE_PCR_IDX
int
depends on IMA
range 8 14
default 10
help
@ -53,7 +54,7 @@ config IMA_MEASURE_PCR_IDX
config IMA_LSM_RULES
bool
depends on IMA && AUDIT && (SECURITY_SELINUX || SECURITY_SMACK || SECURITY_APPARMOR)
depends on AUDIT && (SECURITY_SELINUX || SECURITY_SMACK || SECURITY_APPARMOR)
default y
help
Disabling this option will disregard LSM based policy rules.
@ -61,7 +62,6 @@ config IMA_LSM_RULES
choice
prompt "Default template"
default IMA_NG_TEMPLATE
depends on IMA
help
Select the default IMA measurement template.
@ -80,14 +80,12 @@ endchoice
config IMA_DEFAULT_TEMPLATE
string
depends on IMA
default "ima-ng" if IMA_NG_TEMPLATE
default "ima-sig" if IMA_SIG_TEMPLATE
choice
prompt "Default integrity hash algorithm"
default IMA_DEFAULT_HASH_SHA1
depends on IMA
help
Select the default hash algorithm used for the measurement
list, integrity appraisal and audit log. The compiled default
@ -117,7 +115,6 @@ endchoice
config IMA_DEFAULT_HASH
string
depends on IMA
default "sha1" if IMA_DEFAULT_HASH_SHA1
default "sha256" if IMA_DEFAULT_HASH_SHA256
default "sha512" if IMA_DEFAULT_HASH_SHA512
@ -126,7 +123,6 @@ config IMA_DEFAULT_HASH
config IMA_WRITE_POLICY
bool "Enable multiple writes to the IMA policy"
depends on IMA
default n
help
IMA policy can now be updated multiple times. The new rules get
@ -137,7 +133,6 @@ config IMA_WRITE_POLICY
config IMA_READ_POLICY
bool "Enable reading back the current IMA policy"
depends on IMA
default y if IMA_WRITE_POLICY
default n if !IMA_WRITE_POLICY
help
@ -147,7 +142,6 @@ config IMA_READ_POLICY
config IMA_APPRAISE
bool "Appraise integrity measurements"
depends on IMA
default n
help
This option enables local measurement integrity appraisal.
@ -304,7 +298,6 @@ config IMA_APPRAISE_SIGNED_INIT
config IMA_MEASURE_ASYMMETRIC_KEYS
bool
depends on IMA
depends on ASYMMETRIC_PUBLIC_KEY_SUBTYPE=y
default y
@ -323,7 +316,8 @@ config IMA_SECURE_AND_OR_TRUSTED_BOOT
config IMA_DISABLE_HTABLE
bool "Disable htable to allow measurement of duplicate records"
depends on IMA
default n
help
This option disables htable to allow measurement of duplicate records.
endif