/* * This function writes the digest of an event (without size limit). */ int ima_eventdigest_ng_init(struct ima_event_data *event_data, struct ima_field_data *field_data) { u8 *cur_digest = NULL, hash_algo = HASH_ALGO_SHA1; u32 cur_digestsize = 0; if (event_data->violation) /* recording a violation. */ goto out; cur_digest = event_data->iint->ima_hash->digest; cur_digestsize = event_data->iint->ima_hash->length; hash_algo = event_data->iint->ima_hash->algo; out: return ima_eventdigest_init_common(cur_digest, cur_digestsize, hash_algo, field_data); }
/* * This function writes the digest of an event (with size limit). */ int ima_eventdigest_init(struct integrity_iint_cache *iint, struct file *file, const unsigned char *filename, struct evm_ima_xattr_data *xattr_value, int xattr_len, struct ima_field_data *field_data) { struct { struct ima_digest_data hdr; char digest[IMA_MAX_DIGEST_SIZE]; } hash; u8 *cur_digest = NULL; u32 cur_digestsize = 0; struct inode *inode; int result; memset(&hash, 0, sizeof(hash)); if (!iint) /* recording a violation. */ goto out; if (ima_template_hash_algo_allowed(iint->ima_hash->algo)) { cur_digest = iint->ima_hash->digest; cur_digestsize = iint->ima_hash->length; goto out; } if (!file) /* missing info to re-calculate the digest */ return -EINVAL; inode = file_inode(file); hash.hdr.algo = ima_template_hash_algo_allowed(ima_hash_algo) ? ima_hash_algo : HASH_ALGO_SHA1; result = ima_calc_file_hash(file, &hash.hdr); if (result) { integrity_audit_msg(AUDIT_INTEGRITY_DATA, inode, filename, "collect_data", "failed", result, 0); return result; } cur_digest = hash.hdr.digest; cur_digestsize = hash.hdr.length; out: return ima_eventdigest_init_common(cur_digest, cur_digestsize, HASH_ALGO__LAST, field_data); }
/* * This function writes the digest of an event (without size limit). */ int ima_eventdigest_ng_init(struct integrity_iint_cache *iint, struct file *file, const unsigned char *filename, struct evm_ima_xattr_data *xattr_value, int xattr_len, struct ima_field_data *field_data) { u8 *cur_digest = NULL, hash_algo = HASH_ALGO_SHA1; u32 cur_digestsize = 0; /* If iint is NULL, we are recording a violation. */ if (!iint) goto out; cur_digest = iint->ima_hash->digest; cur_digestsize = iint->ima_hash->length; hash_algo = iint->ima_hash->algo; out: return ima_eventdigest_init_common(cur_digest, cur_digestsize, hash_algo, field_data); }