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--- lk_usermodehelper [2019/02/14 15:16] – [drivers/macintosh/windfarm_core.c] rpjday
+++ lk_usermodehelper [2019/02/14 15:18] (current) – [init/do_mounts_initrd.c] rpjday
@@ Line 341: / Line 341: @@
         ...
+</code>
+==== kernel/reboot.c ====
+<code>
+char poweroff_cmd[POWEROFF_CMD_PATH_LEN] = "/sbin/poweroff";
+static const char reboot_cmd[] = "/sbin/reboot";
+static int run_cmd(const char *cmd)
+{
+        char **argv;
+        static char *envp[] = {
+                "HOME=/",
+                "PATH=/sbin:/bin:/usr/sbin:/usr/bin",
+                NULL
+        };
+        int ret;
+        argv = argv_split(GFP_KERNEL, cmd, NULL);
+        if (argv) {
+                ret = call_usermodehelper(argv[0], argv, envp, UMH_WAIT_EXEC);
+                argv_free(argv);
+        } else {
+                ret = -ENOMEM;
+        }
+        return ret;
+}
 </code>