initctl: check for kexec_loaded when reboot is requested through initctl

src/initctl.c

@@ -93,6 +93,8 @@ static const char *translate_runlevel(int runlevel, bool *isolate) {
         for (i = 0; i < ELEMENTSOF(table); i++)
                 if (table[i].runlevel == runlevel) {
                         *isolate = table[i].isolate;
+                        if (runlevel == '6' && kexec_loaded())
+                                return SPECIAL_KEXEC_TARGET;
                         return table[i].special;
                 }
 

src/systemctl.c

@@ -4427,18 +4427,6 @@ static int parse_time_spec(const char *t, usec_t *_u) {
         return 0;
 }
 
-static bool kexec_loaded(void) {
-       bool loaded = false;
-       char *s;
-
-       if (read_one_line_file("/sys/kernel/kexec_loaded", &s) >= 0) {
-               if (s[0] == '1')
-                       loaded = true;
-               free(s);
-       }
-       return loaded;
-}
-
 static int shutdown_parse_argv(int argc, char *argv[]) {
 
         enum {

src/util.c

@@ -5852,3 +5852,15 @@ static const char *const signal_table[] = {
 };
 
 DEFINE_STRING_TABLE_LOOKUP(signal, int);
+
+bool kexec_loaded(void) {
+       bool loaded = false;
+       char *s;
+
+       if (read_one_line_file("/sys/kernel/kexec_loaded", &s) >= 0) {
+               if (s[0] == '1')
+                       loaded = true;
+               free(s);
+       }
+       return loaded;
+}

src/util.h

@@ -504,4 +504,6 @@ int signal_from_string_try_harder(const char *s);
 extern int saved_argc;
 extern char **saved_argv;
 
+bool kexec_loaded(void);
+
 #endif