[PATCH 4/9] cdev: introduce partition names

[Sascha Hauer <s.hauer@pengutronix.de>]

currently most partition cdevs have the name <devname>.<partname>
This makes it hard to find a partition by <partname>. This introduces
a partname field in struct cdev so that.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 fs/devfs-core.c  | 3 +++
 include/driver.h | 5 ++++-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/fs/devfs-core.c b/fs/devfs-core.c
index a16866e..a2bea93 100644
--- a/fs/devfs-core.c
+++ b/fs/devfs-core.c
@@ -244,6 +244,8 @@ struct cdev *devfs_add_partition(const char *devname, loff_t offset, loff_t size
 
 	new = xzalloc(sizeof (*new));
 	new->name = strdup(name);
+	if (!strncmp(devname, name, strlen(devname)))
+		new->partname = xstrdup(name + strlen(devname) + 1);
 	new->ops = cdev->ops;
 	new->priv = cdev->priv;
 	new->size = size;
@@ -291,6 +293,7 @@ int devfs_del_partition(const char *name)
 		return ret;
 
 	free(cdev->name);
+	free(cdev->partname);
 	free(cdev);
 
 	return 0;
diff --git a/include/driver.h b/include/driver.h
index 9f114ff..353af3a 100644
--- a/include/driver.h
+++ b/include/driver.h
@@ -444,7 +444,10 @@ struct cdev {
 	struct device_d *dev;
 	struct list_head list;
 	struct list_head devices_list;
-	char *name;
+	char *name; /* filename under /dev/ */
+	char *partname; /* the partition name, usually the above without the
+			 * device part, i.e. name = "nand0.barebox" -> partname = "barebox"
+			 */
 	loff_t offset;
 	loff_t size;
 	unsigned int flags;
-- 
1.8.3.2


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