unsigned long p9_max_pages;
/* Scatterlist: can be too big for stack. */
struct scatterlist sg[VIRTQUEUE_NUM];
-
- int tag_len;
/*
- * tag name to identify a mount Non-null terminated
+ * tag name to identify a mount null terminated
*/
char *tag;
{
struct virtio_chan *chan;
struct virtio_device *vdev;
+ int tag_len;
vdev = dev_to_virtio(dev);
chan = vdev->priv;
+ tag_len = strlen(chan->tag);
- memcpy(buf, chan->tag, chan->tag_len);
- buf[chan->tag_len] = 0;
+ memcpy(buf, chan->tag, tag_len + 1);
- return chan->tag_len + 1;
+ return tag_len + 1;
}
static DEVICE_ATTR(mount_tag, 0444, p9_mount_tag_show, NULL);
err = -EINVAL;
goto out_free_vq;
}
- tag = kmalloc(tag_len, GFP_KERNEL);
+ tag = kzalloc(tag_len + 1, GFP_KERNEL);
if (!tag) {
err = -ENOMEM;
goto out_free_vq;
virtio_cread_bytes(vdev, offsetof(struct virtio_9p_config, tag),
tag, tag_len);
chan->tag = tag;
- chan->tag_len = tag_len;
err = sysfs_create_file(&(vdev->dev.kobj), &dev_attr_mount_tag.attr);
if (err) {
goto out_free_tag;
mutex_lock(&virtio_9p_lock);
list_for_each_entry(chan, &virtio_chan_list, chan_list) {
- if (!strncmp(devname, chan->tag, chan->tag_len) &&
- strlen(devname) == chan->tag_len) {
+ if (!strcmp(devname, chan->tag)) {
if (!chan->inuse) {
chan->inuse = true;
found = 1;