diff -b -p -u -r1.213 -r1.214
--- kppp/main.cpp       9 Sep 2002 17:58:39 -0000       1.213
+++ kppp/main.cpp       10 Dec 2002 17:45:20 -0000      1.214
@@ -328,7 +328,8 @@ pid_t execute_command (const QString & c
    signal(SIGCHLD, SIG_IGN);

    // close file descriptors
-    for (int fd = 3; fd < 20; fd++)
+    const int open_max = sysconf( _SC_OPEN_MAX );
+    for (int fd = 3; fd < open_max; ++fd)
      close(fd);

    // drop privileges if running setuid root

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