signal-defs.h
#ifndef __ASM_GENERIC_SIGNAL_DEFS_H
#define __ASM_GENERIC_SIGNAL_DEFS_H
#include <linux/compiler.h>
#ifndef SIG_BLOCK
#define SIG_BLOCK 0 /* for blocking signals */
#endif
#ifndef SIG_UNBLOCK
#define SIG_UNBLOCK 1 /* for unblocking signals */
#endif
#ifndef SIG_SETMASK
#define SIG_SETMASK 2 /* for setting the signal mask */
#endif
#ifndef __ASSEMBLY__
typedef void __signalfn_t(int);
typedef __signalfn_t __user *__sighandler_t;
typedef void __restorefn_t(void);
typedef __restorefn_t __user *__sigrestore_t;
#define SIG_DFL ((__force __sighandler_t)0) /* default signal handling */
#define SIG_IGN ((__force __sighandler_t)1) /* ignore signal */
#define SIG_ERR ((__force __sighandler_t)-1) /* error return from signal */
#endif
#endif /* __ASM_GENERIC_SIGNAL_DEFS_H */