#pragma once

#include <stdint.h>

#define SIG_DFL ((sighandler_t)0)
#define SIG_IGN ((sighandler_t)(uintptr_t)1)
#define SIG_ERR ((sighandler_t)(uintptr_t)-1)

typedef void (*sighandler_t)(int);
typedef void (*sigaction_fn_t)(int);

typedef int sig_atomic_t;
typedef unsigned int sigset_t;

#define SIGHUP    1
#define SIGINT    2
#define SIGQUIT   3
#define SIGILL    4
#define SIGTRAP   5
#define SIGABRT   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 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 SIGPWR    30
#define SIGSYS    31

#define NSIG 32

#define SIG_BLOCK   0
#define SIG_UNBLOCK 1
#define SIG_SETMASK 2

#define SA_NOCLDSTOP 0x0001
#define SA_NOCLDWAIT 0x0002
#define SA_SIGINFO   0x0004
#define SA_RESTART   0x0008
#define SA_ONSTACK   0x0010
#define SA_RESETHAND 0x0020
#define SA_NODEFER   0x0040

struct sigaction {
    sigaction_fn_t sa_handler;
    sigset_t sa_mask;
    int sa_flags;
    void (*sa_restorer)(void);
};

#ifndef _KERNEL
#include <libc_usr/signal.h>
#endif