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#pragma once
#include <bits/panic.h>
#include <sys/types.h>
#include <errno.h> // only for ENOSYS
#define SIGHUP 1
#define SIGINT 2
#define SIGQUIT 3
#define SIGILL 4
#define SIGTRAP 5
#define SIGABRT 6
#define SIGFPE 8
#define SIGKILL 9
#define SIGSEGV 11
#define SIGPIPE 13
#define SIGALRM 14
#define SIGTERM 15
#define SIGCONT 16
#define SIGPIPE 17
#define SIGTSTP 18
#define SIGTTIN 19
#define SIGTTOU 20
#define SIGWINCH 21
#define SIGCHLD 22
#define NSIG 32
#define SIG_DFL ((void*)0)
#define SIG_ERR ((void*)0)
#define SIG_IGN ((void*)0)
#define SIG_SETMASK 0
typedef int sig_atomic_t;
typedef struct {} sigset_t;
typedef struct {} siginfo_t;
typedef void (*sighandler_t)(int);
extern const char *const sys_siglist[];
struct sigaction {
void (*sa_handler)(int);
void (*sa_sigaction)(int, siginfo_t *, void *);
sigset_t sa_mask;
int sa_flags;
void (*sa_restorer)(void);
};
int sigaction(int sig, const struct sigaction *act, struct sigaction *oldact);
int sigemptyset(sigset_t *set);
int sigfillset(sigset_t *set);
int sigprocmask(int how, const sigset_t *set, const sigset_t *oldset);
int sigsuspend(const sigset_t *mask);
sighandler_t signal(int sig, void (*func)(int));
int kill(pid_t pid, int sig);
int raise(int sig);
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