When e.g. array name (an) is correct and it is the same as container name (cn),
file element creation /dev/md/an will replace /dev/md/cn.
This can cause that user cannot access container using /dev/md/cn.
Verify during array creation if chosen name is not already existing one.
Signed-off-by: Adam Kwolek <adam.kwolek@xxxxxxxxx>
---
Create.c | 11 +++++++++++
1 files changed, 11 insertions(+), 0 deletions(-)
diff --git a/Create.c b/Create.c
index 5d1548b..e522d8e 100644
--- a/Create.c
+++ b/Create.c
@@ -558,6 +558,17 @@ int Create(struct supertype *st, char *mddev,
map_unlock(&map);
return 1;
}
+ /* verify if chosen_name is not in use,
+ * it could be in conflict with already existing device
+ * e.g. container, array
+ */
+ if (stat(chosen_name, &stb) != -1) {
+ fprintf(stderr, Name ": Array name %s is in use already.\n",
+ chosen_name);
+ close(mdfd);
+ map_unlock(&map);
+ return 1;
+ }
mddev = chosen_name;
vers = md_get_version(mdfd);
--
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