[PATCH] cmd: ubi: don't allow to rename a volume to a name that already exist

[Philippe Reynes]

This commits add a check on the command ubi rename. This check avoids
to rename a volume to with a name that is already used on another ubi
volume. If two volumes has the same name, then the ubi device can't be
mounted anymore.

Signed-off-by: Philippe Reynes <philippe.reynes at softathome.com>
---
 cmd/ubi.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/cmd/ubi.c b/cmd/ubi.c
index 171377cc66..cb14e3e1e7 100644
--- a/cmd/ubi.c
+++ b/cmd/ubi.c
@@ -264,6 +264,11 @@ static int ubi_rename_vol(char *oldname, char *newname)
 		return ENODEV;
 	}
 
+	if (!ubi_check(newname)) {
+		printf("%s: volume %s already exist\n", __func__, newname);
+		return EINVAL;
+	}
+
 	printf("Rename UBI volume %s to %s\n", oldname, newname);
 
 	if (ubi->ro_mode) {
-- 
2.17.1