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#ifndef __SIGNAL_H
#define __SIGNAL_H
#include <features.h>

typedef unsigned long sigset_t;         /* at least 32 bits */

#define _NSIG             32
#define NSIG            _NSIG

#define SIGHUP           1
#define SIGINT           2
#define SIGQUIT          3
#define SIGILL           4
#define SIGTRAP          5
#define SIGABRT          6
#define SIGIOT           6
#define SIGBUS           7
#define SIGFPE           8
#define SIGKILL          9
#define SIGUSR1         10
#define SIGSEGV         11
#define SIGUSR2         12
#define SIGPIPE         13
#define SIGALRM         14
#define SIGTERM         15
#define SIGSTKFLT       16
#define SIGCHLD         17
#define SIGCONT         18
#define SIGSTOP         19
#define SIGTSTP         20
#define SIGTTIN         21
#define SIGTTOU         22
#define SIGURG          23
#define SIGXCPU         24
#define SIGXFSZ         25
#define SIGVTALRM       26
#define SIGPROF         27
#define SIGWINCH        28
#define SIGIO           29
#define SIGPOLL         SIGIO
/*
#define SIGLOST         29
*/
#define SIGPWR          30
#define SIGUNUSED       31

/*
 * sa_flags values: SA_STACK is not currently supported, but will allow the
 * usage of signal stacks by using the (now obsolete) sa_restorer field in
 * the sigaction structure as a stack pointer. This is now possible due to
 * the changes in signal handling. LBT 010493.
 * SA_INTERRUPT is a no-op, but left due to historical reasons. Use the
 * SA_RESTART flag to get restarting signals (which were the default long ago)
 */
#define SA_NOCLDSTOP    1
#define SA_STACK        0x08000000
#define SA_RESTART      0x10000000
#define SA_INTERRUPT    0x20000000
#define SA_NOMASK       0x40000000
#define SA_ONESHOT      0x80000000

#define SIG_BLOCK          0    /* for blocking signals */
#define SIG_UNBLOCK        1    /* for unblocking signals */
#define SIG_SETMASK        2    /* for setting the signal mask */

/* Type of a signal handler.  */
typedef void (*__sighandler_t)(/* int */);

#define SIG_DFL ((__sighandler_t)0)     /* default signal handling */
#define SIG_IGN ((__sighandler_t)1)     /* ignore signal */
#define SIG_ERR ((__sighandler_t)-1)    /* error return from signal */

struct sigaction {
        __sighandler_t sa_handler;
        sigset_t sa_mask;
        unsigned long sa_flags;
        void (*sa_restorer)( /*void*/ );
};

/* BSDisms */
extern __const char * __const sys_siglist[];
#define sig_t __sighandler_t

#endif