Commit 7fcf459a authored by Jarkko Sakkinen's avatar Jarkko Sakkinen
Browse files

tpm: Use -EPERM as fallback error code in tpm_ret_to_err 



Using -EFAULT as the tpm_ret_to_err() fallback error code causes makes it
incompatible on how trusted keys transmute TPM return codes.

Change the fallback as -EPERM in order to gain compatibility with trusted
keys. In addition, map TPM_RC_HASH to -EINVAL in order to be compatible
with tpm2_seal_trusted() return values.

Signed-off-by: default avatarJarkko Sakkinen <jarkko.sakkinen@opinsys.com>
Reviewed-by: default avatarStefano Garzarella <sgarzare@redhat.com>
Signed-off-by: default avatarJarkko Sakkinen <jarkko@kernel.org>
parent faf07e61

include/linux/tpm.h

+3 −1
Original line number Diff line number Diff line
@@ -456,8 +456,10 @@ static inline ssize_t tpm_ret_to_err(ssize_t ret) 
		return 0;

	case TPM2_RC_SESSION_MEMORY:

		return -ENOMEM;

	case TPM2_RC_HASH:

		return -EINVAL;

	default:

		return -EFAULT;

		return -EPERM;

	}

}