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#include <features.h>
#include <linux/signal.h>
#ifndef SIGCLD
#define SIGCLD SIGCHLD
#endif
typedef int sig_atomic_t;
typedef __sighandler_t SignalHandler;
#define SignalBad ((SignalHandler)-1)
#define SignalDefault ((SignalHandler)0)
#define SignalIgnore ((SignalHandler)1)
#define __sigmask(sig) (1 << ((sig) - 1))
#define sigmask __sigmask
#define __SIGFILLSET 0xffffffff
#define __SIGEMPTYSET 0
#define __SIGADDSET(s,n) ((*s) |= (__sigmask(n)))
#define __SIGDELSET(s,n) ((*s) &= ~(__sigmask(n)))
#define __SIGISMEMBER(s,n) ((*s) & (__sigmask(n)))
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