static ssize_t dimmdev_label_show(struct device *dev,
struct device_attribute *mattr, char *data)
{
struct dimm_info *dimm = to_dimm(dev);
/* if field has not been initialized, there is nothing to send */
if (!dimm->label[0])
return 0;
return snprintf(data, sizeof(dimm->label) + 1, "%s\n", dimm->label);
}
static ssize_t dimmdev_label_store(struct device *dev,
struct device_attribute *mattr,
const char *data,
size_t count)
{
struct dimm_info *dimm = to_dimm(dev);
ssize_t max_size = 0;
max_size = min((ssize_t) count, (ssize_t) EDAC_MC_LABEL_LEN - 1);
strncpy(dimm->label, data, max_size);
dimm->label[max_size] = '\0';
return max_size;
}
static ssize_t dimmdev_label_store(struct device *dev,
struct device_attribute *mattr,
const char *data,
size_t count)
{
struct dimm_info *dimm = to_dimm(dev);
size_t copy_count = count;
if (count == 0)
return -EINVAL;
if (data[count - 1] == '\0' || data[count - 1] == '\n')
copy_count -= 1;
if (copy_count == 0 || copy_count >= sizeof(dimm->label))
return -EINVAL;
strncpy(dimm->label, data, copy_count);
dimm->label[copy_count] = '\0';
return count;
}