Include more of sys/types.h and sys/signal.h under NaCl

newlib/libc/include/sys/signal.h

 /* sys/signal.h */
 
 #ifndef _SYS_SIGNAL_H
 #define _SYS_SIGNAL_H
 #ifdef __cplusplus
 extern "C" {
 #endif
 
 #include "_ansi.h"
 #include <sys/features.h>
 #include <sys/types.h>
 
 /* #ifndef __STRICT_ANSI__*/
 
 /* Cygwin defines it's own sigset_t in include/cygwin/signal.h */
 #ifndef __CYGWIN__
 typedef unsigned long sigset_t;
 #endif
 
-#if defined(__rtems__)
+#if defined(__rtems__) || defined (__native_client__)
 
 #if defined(_POSIX_REALTIME_SIGNALS)
 
 /* sigev_notify values
    NOTE: P1003.1c/D10, p. 34 adds SIGEV_THREAD.  */
 
 #define SIGEV_NONE   1  /* No asynchronous notification shall be delivered */
                         /*   when the event of interest occurs. */
 #define SIGEV_SIGNAL 2  /* A queued signal, with an application defined */
                         /*  value, shall be delivered when the event of */
@@ skipping 79 matching lines @@
 #define SA_NOCLDSTOP 1  /* only value supported now for sa_flags */
 
 typedef void (*_sig_func_ptr)(int);
 
 struct sigaction 
 {
         _sig_func_ptr sa_handler;
         sigset_t sa_mask;
         int sa_flags;
 };
-#endif /* defined(__rtems__) */
+#endif /* defined(__rtems__) || defined(__native_client__) */
 
 #define SIG_SETMASK 0   /* set mask with sigprocmask() */
 #define SIG_BLOCK 1     /* set of signals to block */
 #define SIG_UNBLOCK 2   /* set of signals to, well, unblock */
 
 /* These depend upon the type of sigset_t, which right now 
    is always a long.. They're in the POSIX namespace, but
    are not ANSI. */
 #define sigaddset(what,sig) (*(what) |= (1<<(sig)), 0)
 #define sigdelset(what,sig) (*(what) &= ~(1<<(sig)), 0)
@@ skipping 177 matching lines @@
 #ifdef __cplusplus
 }
 #endif
 
 #ifndef _SIGNAL_H_
 /* Some applications take advantage of the fact that <sys/signal.h>
  * and <signal.h> are equivalent in glibc.  Allow for that here.  */
 #include <signal.h>
 #endif
 #endif /* _SYS_SIGNAL_H */