The size of static ubi volumes changes depending on the content.
Add truncate callback to handle resizes.
Signed-off-by: Teresa Remmet <t.remmet@xxxxxxxxx>
---
drivers/mtd/ubi/barebox.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/drivers/mtd/ubi/barebox.c b/drivers/mtd/ubi/barebox.c
index 329cf45..2ad731a 100644
--- a/drivers/mtd/ubi/barebox.c
+++ b/drivers/mtd/ubi/barebox.c
@@ -162,6 +162,21 @@ static loff_t ubi_volume_cdev_lseek(struct cdev *cdev, loff_t ofs)
return ofs;
}
+static int ubi_volume_cdev_truncate(struct cdev *cdev, size_t size)
+{
+ struct ubi_volume_cdev_priv *priv = cdev->priv;
+ struct ubi_device *ubi = priv->ubi;
+ struct ubi_volume *vol = priv->vol;
+ uint64_t rsvd_bytes;
+
+ rsvd_bytes = (long long)vol->reserved_pebs *
+ ubi->leb_size - vol->data_pad;
+ if (size > rsvd_bytes)
+ return -ENOSPC;
+
+ return 0;
+}
+
static int ubi_volume_cdev_ioctl(struct cdev *cdev, int cmd, void *buf)
{
struct ubi_volume_cdev_priv *priv = cdev->priv;
@@ -210,6 +225,7 @@ static struct file_operations ubi_volume_fops = {
.write = ubi_volume_cdev_write,
.lseek = ubi_volume_cdev_lseek,
.ioctl = ubi_volume_cdev_ioctl,
+ .truncate = ubi_volume_cdev_truncate,
};
int ubi_volume_cdev_add(struct ubi_device *ubi, struct ubi_volume *vol)
--
1.9.1
_______________________________________________
barebox mailing list
barebox@xxxxxxxxxxxxxxxxxxx
http://lists.infradead.org/mailman/listinfo/barebox
