lib-storage: Fixed accessing user as root when user has no uid.

This shouldn't normally be done, but might as well fix it. Fixes: Fatal: mail-storage-service: seteuid(4294967295) failed: Invalid argument
dovecot · Sep 9, 2016 · 8c81109 · 8c81109
1 parent d3cc15f
commit 8c81109
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/lib-storage/mail-storage-service.c b/src/lib-storage/mail-storage-service.c
@@ -610,7 +610,7 @@ service_drop_privileges(struct mail_storage_service_user *user,
 	}
 
 	if (keep_setuid_root) {
-		if (current_euid != rset.uid) {
+		if (current_euid != rset.uid && rset.uid != (uid_t)-1) {
 			if (current_euid != 0) {
 				/* we're changing the UID,
 				   switch back to root first */