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Add crypt_get_hw_encryption_type API call.

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This commit is contained in:
Milan Broz
2023-07-17 13:33:51 +02:00
committed by Luca Boccassi
parent 446ad76011
commit 5716f959a7
3 changed files with 41 additions and 0 deletions
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21
lib/libcryptsetup.h
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@@ -450,6 +450,27 @@ const char *crypt_get_type(struct crypt_device *cd);
*/ */
const char *crypt_get_default_type(void); const char *crypt_get_default_type(void);
/**
* @defgroup crypt-hw-encryption-types HW encryption type
* @addtogroup crypt-hw-encryption-types
* @{
*/
/** SW encryption, no OPAL encryption in place (default) */
#define CRYPT_SW_ONLY INT16_C(0)
/** OPAL HW encryption only (no SW encryption!) */
#define CRYPT_OPAL_HW_ONLY INT16_C(1)
/** SW encryption stacked over OPAL HW encryption */
#define CRYPT_SW_AND_OPAL_HW INT16_C(2)
/** @} */
/**
* Get OPAL HW encryption type
*
* @return HW encryption type (see @link crypt-hw-encryption-types @endlink)
* or negative errno otherwise.
*/
int crypt_get_hw_encryption_type(struct crypt_device *cd);
/** /**
* *
* Structure used as parameter for PLAIN device type. * Structure used as parameter for PLAIN device type.

1
lib/libcryptsetup.sym
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@@ -169,4 +169,5 @@ CRYPTSETUP_2.6 {
CRYPTSETUP_2.7 { CRYPTSETUP_2.7 {
global: global:
crypt_format_luks2_opal; crypt_format_luks2_opal;
crypt_get_hw_encryption_type;
} CRYPTSETUP_2.6; } CRYPTSETUP_2.6;

19
lib/setup.c
View File

@@ -6267,6 +6267,25 @@ const char *crypt_get_default_type(void)
return DEFAULT_LUKS_FORMAT; return DEFAULT_LUKS_FORMAT;
} }
int crypt_get_hw_encryption_type(struct crypt_device *cd)
{
uint32_t opal_segment_number;
const char *cipher;
if (!cd)
return -EINVAL;
if (isLUKS2(cd->type) &&
!LUKS2_get_opal_segment_number(&cd->u.luks2.hdr, CRYPT_DEFAULT_SEGMENT, &opal_segment_number)) {
cipher = crypt_get_cipher(cd);
if (!cipher || !strcmp(cipher, "cipher_null"))
return CRYPT_OPAL_HW_ONLY;
return CRYPT_SW_AND_OPAL_HW;
}
return CRYPT_SW_ONLY;
}
int crypt_get_verity_info(struct crypt_device *cd, int crypt_get_verity_info(struct crypt_device *cd,
struct crypt_params_verity *vp) struct crypt_params_verity *vp)
{ {