+
+extern void
+proc_prettyfprint_status (long, int, int, int);
+
+/*
+ * Trace functions for /proc api.
+ */
+
+extern int write_with_trace (int, void *, size_t, char *, int);
+extern off_t lseek_with_trace (int, off_t, int, char *, int);
+extern int ioctl_with_trace (int, long, void *, char *, int);
+extern pid_t wait_with_trace (int *, char *, int);
+extern int open_with_trace (char *, int, char *, int);
+extern int close_with_trace (int, char *, int);
+extern void procfs_note (char *, char *, int);
+
+#ifdef PROCFS_TRACE
+/*
+ * Debugging code:
+ *
+ * These macros allow me to trace the system calls that we make
+ * to control the child process. This is quite handy for comparing
+ * with the older version of procfs.
+ */
+
+#define write(X,Y,Z) write_with_trace (X, Y, Z, __FILE__, __LINE__)
+#define lseek(X,Y,Z) lseek_with_trace (X, Y, Z, __FILE__, __LINE__)
+#define ioctl(X,Y,Z) ioctl_with_trace (X, Y, Z, __FILE__, __LINE__)
+#define open(X,Y) open_with_trace (X, Y, __FILE__, __LINE__)
+#define close(X) close_with_trace (X, __FILE__, __LINE__)
+#define wait(X) wait_with_trace (X, __FILE__, __LINE__)
+#endif
+#define PROCFS_NOTE(X) procfs_note (X, __FILE__, __LINE__)
+#define PROC_PRETTYFPRINT_STATUS(X,Y,Z,T) \
+ proc_prettyfprint_status (X, Y, Z, T)
+
+/* Define the type (and more importantly the width) of the control
+ word used to write to the /proc/PID/ctl file. */
+#if defined (PROC_CTL_WORD_TYPE)
+typedef PROC_CTL_WORD_TYPE procfs_ctl_t;
+#else
+typedef long procfs_ctl_t;
+#endif