On 25/04/14 00:04, Mimi Zohar wrote:
> On Wed, 2014-04-23 at 16:30 +0300, Dmitry Kasatkin wrote:
>> This patch provides convenient buffer hash calculation function.
>>
>> Signed-off-by: Dmitry Kasatkin <[email protected]>
> Where/how is it being used? We normally don't upstream a new function
> without it being used. Is the usage in another patch?
>
> Mimi
Sure.. it is used in PATCH 15.
>> ---
>> security/integrity/ima/ima.h | 1 +
>> security/integrity/ima/ima_crypto.c | 11 +++++++++--
>> 2 files changed, 10 insertions(+), 2 deletions(-)
>>
>> diff --git a/security/integrity/ima/ima.h b/security/integrity/ima/ima.h
>> index f4c1e8dd..a5d5ccb 100644
>> --- a/security/integrity/ima/ima.h
>> +++ b/security/integrity/ima/ima.h
>> @@ -98,6 +98,7 @@ int ima_add_template_entry(struct ima_template_entry
>> *entry, int violation,
>> const char *op, struct inode *inode,
>> const unsigned char *filename);
>> int ima_calc_file_hash(struct file *file, struct ima_digest_data *hash);
>> +int ima_calc_buffer_hash(const void *buf, int len, struct ima_digest_data
>> *hash);
>> int ima_calc_field_array_hash(struct ima_field_data *field_data,
>> struct ima_template_desc *desc, int num_fields,
>> struct ima_digest_data *hash);
>> diff --git a/security/integrity/ima/ima_crypto.c
>> b/security/integrity/ima/ima_crypto.c
>> index 139e7f7..50c78c0 100644
>> --- a/security/integrity/ima/ima_crypto.c
>> +++ b/security/integrity/ima/ima_crypto.c
>> @@ -434,13 +434,13 @@ static int ima_calc_field_array_hash_tfm(struct
>> ima_field_data *field_data,
>> u8 *data_to_hash = field_data[i].data;
>> u32 datalen = field_data[i].len;
>>
>> - if (strcmp(td->name, IMA_TEMPLATE_IMA_NAME) != 0) {
>> + if (td && strcmp(td->name, IMA_TEMPLATE_IMA_NAME) != 0) {
>> rc = crypto_shash_update(&desc.shash,
>> (const u8 *) &field_data[i].len,
>> sizeof(field_data[i].len));
>> if (rc)
>> break;
>> - } else if (strcmp(td->fields[i]->field_id, "n") == 0) {
>> + } else if (td && strcmp(td->fields[i]->field_id, "n") == 0) {
>> memcpy(buffer, data_to_hash, datalen);
>> data_to_hash = buffer;
>> datalen = IMA_EVENT_NAME_LEN_MAX + 1;
>> @@ -475,6 +475,13 @@ int ima_calc_field_array_hash(struct ima_field_data
>> *field_data,
>> return rc;
>> }
>>
>> +int ima_calc_buffer_hash(const void *buf, int len, struct ima_digest_data
>> *hash)
>> +{
>> + struct ima_field_data fd = { .data = (u8 *)buf, .len = len };
>> +
>> + return ima_calc_field_array_hash(&fd, NULL, 1, hash);
>> +}
>> +
>> static void __init ima_pcrread(int idx, u8 *pcr)
>> {
>> if (!ima_used_chip)
>
>
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
