check_users: Use sd_get_uids instead of sd_get_session

Previously check_users in combination with systemd used
sd_get_sessions (3) to aquire the number of users, probably
with the idea that every users opens a session.
Turns out, that a user can have multiple sessions and we only really
want to know how many users there are.

This commit changes to sd_get_uids (3) to achieve that target.

1 files changed, 1 insertions, 1 deletions

diff --git a/plugins/check_users.d/users.c b/plugins/check_users.d/users.c
index 95c05d6f..a8b168a0 100644
--- a/plugins/check_users.d/users.c
+++ b/plugins/check_users.d/users.c
@@ -61,7 +61,7 @@ get_num_of_users_wrapper get_num_of_users_systemd() {
 
         // Test whether we booted with systemd
         if (sd_booted() > 0) {
-                int users = sd_get_sessions(NULL);
+                int users = sd_get_uids(NULL);
                 if (users >= 0) {
                         // Success
                         result.users = users;