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

Philippe Reynes
2020-12-23T14:33:07Z

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@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