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  • #ifndef __ASM_GENERIC_SIGNAL_H
    #define __ASM_GENERIC_SIGNAL_H
    
    #include <linux/types.h>
    
    #define _NSIG		64
    #define _NSIG_BPW	BITS_PER_LONG
    #define _NSIG_WORDS	(_NSIG / _NSIG_BPW)
    
    #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 SIGSYS		31
    #define	SIGUNUSED	31
    
    /* These should not be considered constants from userland.  */
    #define SIGRTMIN	32
    #ifndef SIGRTMAX
    #define SIGRTMAX	_NSIG
    #endif
    
    /*
     * SA_FLAGS values:
     *
     * SA_ONSTACK indicates that a registered stack_t will be used.
     * SA_RESTART flag to get restarting signals (which were the default long ago)
     * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
     * SA_RESETHAND clears the handler when the signal is delivered.
     * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
     * SA_NODEFER prevents the current signal from being masked in the handler.
     *
     * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
     * Unix names RESETHAND and NODEFER respectively.
     */
    #define SA_NOCLDSTOP	0x00000001
    #define SA_NOCLDWAIT	0x00000002
    #define SA_SIGINFO	0x00000004
    #define SA_ONSTACK	0x08000000
    #define SA_RESTART	0x10000000
    #define SA_NODEFER	0x40000000
    #define SA_RESETHAND	0x80000000
    
    #define SA_NOMASK	SA_NODEFER
    #define SA_ONESHOT	SA_RESETHAND
    
    /*
     * New architectures should not define the obsolete
     *	SA_RESTORER	0x04000000
     */
    
    /*
     * sigaltstack controls
     */
    #define SS_ONSTACK	1
    #define SS_DISABLE	2
    
    #define MINSIGSTKSZ	2048
    #define SIGSTKSZ	8192
    
    #ifndef __ASSEMBLY__
    typedef struct {
    	unsigned long sig[_NSIG_WORDS];
    } sigset_t;
    
    /* not actually used, but required for linux/syscalls.h */
    
    #endif /* __ASSEMBLY__ */
    
    #endif /* _ASM_GENERIC_SIGNAL_H */