--- glib/gspawn.c.orig	2019-07-19 22:50:54.355429000 +0200
+++ glib/gspawn.c	2019-07-20 00:27:16.789113000 +0200
@@ -39,6 +39,13 @@
 #include <sys/resource.h>
 #endif /* HAVE_SYS_RESOURCE_H */
 
+#ifdef __FreeBSD__
+#include <sys/param.h>
+#include <sys/sysctl.h>
+#include <sys/types.h>
+#include <sys/user.h>
+#endif
+
 #include "gspawn.h"
 #include "gthread.h"
 #include "glib/gstdio.h"
@@ -1126,7 +1133,37 @@
    * rlimit trick */
 
 #endif
+
+#ifdef __FreeBSD__
+  char *bp = NULL;
+  char *ep = NULL;
+  size_t len = 0;
+  int mib[4] = {CTL_KERN, KERN_PROC, KERN_PROC_FILEDESC, (int)getpid()};
   
+  if (sysctl(mib, nitems(mib), NULL, &len, NULL, 0) == 0)
+    {
+      bp = (char*) malloc(len);
+      if (sysctl(mib, nitems(mib), bp, &len, NULL, 0) == 0)
+        {
+          ep = bp;
+          while (ep < bp + len) {
+            struct kinfo_file kif = *(struct kinfo_file*)ep;
+            ep += kif.kf_structsize;
+            if (kif.kf_fd < 0)
+                continue;
+
+            if ((res = cb (data, kif.kf_fd)) != 0)
+                break;
+          }
+
+          free(bp);
+          return res;
+        }
+      free(bp);
+    }
+  /* If any sysctl call fails continue with the fall back method */
+#endif
+
 #ifdef HAVE_SYS_RESOURCE_H
       
   if (getrlimit(RLIMIT_NOFILE, &rl) == 0 && rl.rlim_max != RLIM_INFINITY)