+/* Callback to be used when calling fork_inferior, responsible for
+ actually initiating the tracing of the inferior. */
+
+static void
+linux_ptrace_fun ()
+{
+ if (ptrace (PTRACE_TRACEME, 0, (PTRACE_TYPE_ARG3) 0,
+ (PTRACE_TYPE_ARG4) 0) < 0)
+ trace_start_error_with_name ("ptrace");
+
+ if (setpgid (0, 0) < 0)
+ trace_start_error_with_name ("setpgid");
+
+ /* If GDBserver is connected to gdb via stdio, redirect the inferior's
+ stdout to stderr so that inferior i/o doesn't corrupt the connection.
+ Also, redirect stdin to /dev/null. */
+ if (remote_connection_is_stdio ())
+ {
+ if (close (0) < 0)
+ trace_start_error_with_name ("close");
+ if (open ("/dev/null", O_RDONLY) < 0)
+ trace_start_error_with_name ("open");
+ if (dup2 (2, 1) < 0)
+ trace_start_error_with_name ("dup2");
+ if (write (2, "stdin/stdout redirected\n",
+ sizeof ("stdin/stdout redirected\n") - 1) < 0)
+ {
+ /* Errors ignored. */;
+ }
+ }
+}
+