machined: validate machine names at more places

When enumerating machines from /run, and when accepting machine names
for operations, be more strict and always validate.

Note that these checks are strictly speaking unnecessary, since
enumeration happens only on the trusted /run...

1 files changed, 3 insertions, 0 deletions

diff --git a/src/machine/machined.c b/src/machine/machined.c
index 109bab76c5..9b9a334838 100644
--- a/src/machine/machined.c
+++ b/src/machine/machined.c
@@ -118,6 +118,9 @@ int manager_enumerate_machines(Manager *m) {
                 if (startswith(de->d_name, "unit:"))
                         continue;
 
+                if (!machine_name_is_valid(de->d_name))
+                        continue;
+
                 k = manager_add_machine(m, de->d_name, &machine);
                 if (k < 0) {
                         log_error_errno(k, "Failed to add machine by file name %s: %m", de->d_name);