Add new variable sysctlbyname for FreeBSD

src/core.cc

@@ -837,6 +837,12 @@ struct text_object *construct_text_object(char *s, const char *arg, long line,
   END OBJ(mouse_speed, 0) obj->callbacks.print = &print_mouse_speed;
 #endif /* BUILD_X11 */
 
+#ifdef __FreeBSD__
+  END OBJ(sysctlbyname, 0) obj->data.s = STRNDUP_ARG;
+  obj->callbacks.print = &print_sysctlbyname;
+  obj->callbacks.free = &gen_free_opaque;
+#endif /* __FreeBSD__ */
+
   END OBJ(password, 0) obj->data.s = strndup(arg ? arg : "20", text_buffer_size.get(*state));
   obj->callbacks.print = &print_password;
   obj->callbacks.free = &gen_free_opaque;

src/freebsd.cc

@@ -25,7 +25,6 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  *
  */
-
 #include "config.h"
 
 #include <sys/dkstat.h>
@@ -34,9 +33,9 @@
 #include <sys/resource.h>
 #include <sys/socket.h>
 #include <sys/stat.h>
-#include <sys/sysctl.h>
 #include <sys/time.h>
 #include <sys/types.h>
+#include <sys/sysctl.h>
 #include <sys/user.h>
 
 #include <net/if.h>
@@ -704,3 +703,28 @@ int get_entropy_poolsize(unsigned int *val) {
   (void)val;
   return 1;
 }
+
+void print_sysctlbyname(struct text_object *obj, char *p, unsigned int p_max_size) {
+  u_int val[3] = {0};
+  char buf[256] = {""};
+  size_t len = sizeof(val);
+  size_t len2 = sizeof(buf);
+
+  if (0 == strcmp(obj->data.s, "")) {
+    snprintf(p, p_max_size, "%s", "sysctlbyname takes an argument");
+    return;
+  }
+
+  if (0 != sysctlbyname(obj->data.s, &val, &len, NULL, 0)) {
+    if (0 != sysctlbyname(obj->data.s, &buf, &len2, NULL, 0)) {
+      snprintf(p, p_max_size, "%s", "");
+      return;
+    }
+  }
+
+  if (0 != strcmp(buf, "")) {
+    snprintf(p, p_max_size, "%s", buf);
+  } else {
+    snprintf(p, p_max_size, "%lu", (unsigned long)val[0]);
+  }
+}

src/freebsd.h

@@ -1,4 +1,31 @@
-/* */
+/*
+ *
+ * Conky, a system monitor, based on torsmo
+ *
+ * Any original torsmo code is licensed under the BSD license
+ *
+ * All code written since the fork of torsmo is licensed under the GPL
+ *
+ * Please see COPYING for details
+ *
+ * Copyright (c) 2004, Hannu Saransaari and Lauri Hakkarainen
+ * Copyright (c) 2005-2018 Brenden Matthews, Philip Kovacs, et. al.
+ *	(see AUTHORS)
+ * All rights reserved.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
 
 #ifndef FREEBSD_H_
 #define FREEBSD_H_
@@ -16,5 +43,6 @@
 
 int get_entropy_avail(unsigned int *);
 int get_entropy_poolsize(unsigned int *);
+void print_sysctlbyname(struct text_object *, char *, unsigned int);
 
 #endif /*FREEBSD_H_*/