common/inc/signal.h

//
// Copyright © 2005-2020 Rich Felker, et al.
// Licensed under the MIT license.s
//

/* Copyright © 2005-2020 Rich Felker, et al.

Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:

The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */

#ifndef _SIGNAL_H
#define _SIGNAL_H

#include <sys/_types.h>

typedef struct {
    unsigned long _bits[128/sizeof(long)];
} __sigset_t;

typedef __sigset_t sigset_t;

union sigval {
    int sival_int;
    void *sival_ptr;
};

typedef struct {
    int si_signo;
    int si_errno;
    int si_code;
    union {
        char __pad[128 - 2*sizeof(int) - sizeof(long)];
        struct {
            union {
                struct {
                    __pid_t si_pid;
                    __uid_t si_uid;
                } __piduid;
                struct {
                    int si_timerid;
                    int si_overrun;
                } __timer;
            } __first;
            union {
                union sigval si_value;
                struct {
                    int si_status;
                    __clock_t si_utime, si_stime;
                } __sigchld;
            } __second;
        } __si_common;
        struct {
            void *si_addr;
            short si_addr_lsb;
            union {
                struct {
                    void *si_lower;
                    void *si_upper;
                } __addr_bnd;
                unsigned si_pkey;
            } __first;
        } __sigfault;
        struct {
            long si_band;
            int si_fd;
        } __sigpoll;
        struct {
            void *si_call_addr;
            int si_syscall;
            unsigned si_arch;
        } __sigsys;
    } __si_fields;
} siginfo_t;

struct sigaction {
    union {
        void (*sa_handler) (int);
        void (*sa_sigaction) (int, siginfo_t *, void *);
    } __sa_handler;
    __sigset_t sa_mask;
    int sa_flags;
    void (*sa_restorer) (void);
};

#define sa_handler	__sa_handler.sa_handler
#define sa_sigaction __sa_handler.sa_sigaction

#endif