diff --git a/headers/posix/signal.h b/headers/posix/signal.h
index e4a4a03d90..a456af39a9 100644
--- a/headers/posix/signal.h
+++ b/headers/posix/signal.h
@@ -1,20 +1,33 @@
 #ifndef _SIGNAL_H_
 #define _SIGNAL_H_
-
 /* 
 ** Distributed under the terms of the OpenBeOS License.
 */
 
+
 #include <sys/types.h>
 
 
-typedef int	 sig_atomic_t;
+typedef int	sig_atomic_t;
 typedef long sigset_t;
 
 typedef void (*sig_func_t)(int);
 typedef void (*__signal_func_ptr)(int);  /* deprecated, for compatibility with BeOS only */
 
 
+// ToDo: actually make use of this structure!
+typedef struct {
+	int		si_signo;	/* signal number */
+	int		si_code;	/* signal code */
+	int		si_errno;	/* if non zero, an error number associated with this signal */
+	pid_t	si_pid;		/* sending process ID */
+	uid_t	si_uid;		/* real user ID of sending process */
+	void	*si_addr;	/* address of faulting instruction */
+	int		si_status;	/* exit value or signal */
+	long	si_band;	/* band event for SIGPOLL */
+} siginfo_t;
+
+
 /*
  * macros defining the standard signal handling behavior
  */
@@ -31,10 +44,10 @@ typedef void (*__signal_func_ptr)(int);  /* deprecated, for compatibility with B
  * 
  */
 struct sigaction {
-	sig_func_t sa_handler;
-	sigset_t   sa_mask;
-	int        sa_flags;
-	void      *sa_userdata;  /* will be passed to the signal handler */
+	sig_func_t	sa_handler;
+	sigset_t	sa_mask;
+	int			sa_flags;
+	void		*sa_userdata;  /* will be passed to the signal handler */
 };
 
 
@@ -49,14 +62,13 @@ struct sigaction {
 #define SA_STACK      0x10
 
 
-
 /*
  * for signals using an alternate stack
  */
 typedef struct stack_t {
-	void   *ss_sp;
-	size_t  ss_size;
-	int     ss_flags;
+	void	*ss_sp;
+	size_t	ss_size;
+	int		ss_flags;
 } stack_t;
 
 
@@ -68,7 +80,6 @@ typedef struct stack_t {
 #define SIG_SETMASK  3
 
 
-
 /*
  * The list of all defined signals:
  *
@@ -112,12 +123,10 @@ typedef struct stack_t {
 #define NSIG (__signal_max+1)  /* the number of defined signals */
 
 
-
 /* the global table of text strings containing descriptions for each signal */
 extern const char * const sys_siglist[NSIG];
 
 
-
 #ifdef __cplusplus
 extern "C" {
 #endif
@@ -168,7 +177,6 @@ sigdelset(sigset_t *set, int sig)
 }
 #endif
 
-
 /*
  * ==================================================
  * !!! SPECIAL NOTES CONCERNING NON-POSIX EXTENSIONS:
@@ -234,9 +242,6 @@ sigdelset(sigset_t *set, int sig)
  *    open some interesting programming possibilities.
  */
 
-
-
-
 /*
  * the vregs struct:
  *
@@ -400,5 +405,4 @@ struct vregs {
  
 #endif /* __INTEL__ */
 
-
 #endif /* _SIGNAL_H_ */