mlibc/include/signal.h

/*
 * Copyright (c) mlibc & plct lab
 *
 * SPDX-License-Identifier: MIT
 *
 * Change Logs:
 * Date           Author       Notes
 * 2023/06/16     bernard      the first verison
 */

#ifndef __SYS_SIGNAL_H__
#ifndef MLIBC_SIGNAL_H__
#define MLIBC_SIGNAL_H__

#include <stdint.h>
#include <time.h>

#ifndef SIGHUP
#define SIGHUP    1
#endif
#ifndef SIGINT
#define SIGINT    2
#endif
#ifndef SIGQUIT
#define SIGQUIT   3
#endif
#ifndef SIGBUS
#define SIGBUS    7
#endif
#ifndef SIGFPE
#define SIGFPE    8
#endif
#ifndef SIGKILL
#define SIGKILL   9
#endif
#ifndef SIGUSR1
#define SIGUSR1   10
#endif
#ifndef SIGSEGV
#define SIGSEGV   11
#endif
#ifndef SIGUSR2
#define SIGUSR2   12
#endif
#ifndef SIGPIPE
#define SIGPIPE   13
#endif
#ifndef SIGALRM
#define SIGALRM   14
#endif
#ifndef SIGTERM
#define SIGTERM   15
#endif
#ifndef SIGSTKFLT
#define SIGSTKFLT 16
#endif
#ifndef SIGCHLD
#define SIGCHLD   17
#endif
#ifndef SIGCONT
#define SIGCONT   18
#endif
#ifndef SIGSTOP
#define SIGSTOP   19
#endif
#ifndef SIGTSTP
#define SIGTSTP   20
#endif
#ifndef SIGTTIN
#define SIGTTIN   21
#endif
#ifndef SIGTTOU
#define SIGTTOU   22
#endif
#ifndef SIGURG
#define SIGURG    23
#endif
#ifndef SIGXCPU
#define SIGXCPU   24
#endif
#ifndef SIGXFSZ
#define SIGXFSZ   25
#endif
#ifndef SIGVTALRM
#define SIGVTALRM 26
#endif
#ifndef SIGPROF
#define SIGPROF   27
#endif
#ifndef SIGWINCH
#define SIGWINCH  28
#endif
#ifndef SIGIO
#define SIGIO     29
#endif
#ifndef SIGPOLL
#define SIGPOLL   29
#endif
#ifndef SIGPWR
#define SIGPWR    30
#endif
#ifndef SIGSYS
#define SIGSYS    31
#endif
#ifndef SIGUNUSED
#define SIGUNUSED SIGSYS
#endif

#ifndef SA_NOCLDSTOP
#define SA_NOCLDSTOP    1
#endif
#ifndef SA_NOCLDWAIT
#define SA_NOCLDWAIT    2
#endif
#ifndef SA_SIGINFO
#define SA_SIGINFO      4
#endif
#ifndef SA_ONSTACK
#define SA_ONSTACK      0x08000000
#endif
#ifndef SA_RESTART
#define SA_RESTART      0x10000000
#endif
#ifndef SA_NODEFER
#define SA_NODEFER      0x40000000
#endif
#ifndef SA_RESETHAND
#define SA_RESETHAND    0x80000000
#endif
#ifndef SA_RESTORER
#define SA_RESTORER     0x04000000
#endif

#ifndef _NSIG
#define _NSIG           65
#endif
#ifndef SI_KERNEL
#define SI_KERNEL       128
#endif

#ifndef SIG_SETMASK
#define SIG_SETMASK     0   /* set mask with sigprocmask() */
#endif
#ifndef SIG_BLOCK
#define SIG_BLOCK       1   /* set of signals to block */
#endif
#ifndef SIG_UNBLOCK
#define SIG_UNBLOCK     2   /* set of signals to, well, unblock */
#endif

#ifndef _SIG_FUNC_PTR_DEFINED
typedef void (*_sig_func_ptr)(int);
#define _SIG_FUNC_PTR_DEFINED
#endif

#ifndef _SIGSET_T_DEFINED
typedef unsigned long sigset_t;
#define _SIGSET_T_DEFINED
#endif

#ifndef SIG_DFL
#define SIG_DFL ((_sig_func_ptr)0)  /* Default action */
#endif
#ifndef SIG_IGN
#define SIG_IGN ((_sig_func_ptr)1)  /* Ignore action */
#endif
#ifndef SIG_ERR
#define SIG_ERR ((_sig_func_ptr)-1) /* Error return */
#endif

#ifndef SI_USER
#define SI_USER         0x01    /* Signal sent by kill(). */
#endif
#ifndef SI_QUEUE
#define SI_QUEUE        0x02    /* Signal sent by sigqueue(). */
#endif
#ifndef SI_TIMER
#define SI_TIMER        0x03    /* Signal generated by expiration of a
                               timer set by timer_settime(). */
#endif
#ifndef SI_ASYNCIO
#define SI_ASYNCIO      0x04    /* Signal generated by completion of an
                               asynchronous I/O request. */
#endif
#ifndef SI_MESGQ
#define SI_MESGQ        0x05    /* Signal generated by arrival of a
                               message on an empty message queue. */
#endif

#ifndef CLD_EXITED
#define CLD_EXITED      1
#endif
#ifndef CLD_KILLED
#define CLD_KILLED      2
#endif
#ifndef CLD_DUMPED
#define CLD_DUMPED      3
#endif
#ifndef CLD_TRAPPED
#define CLD_TRAPPED     4
#endif
#ifndef CLD_STOPPED
#define CLD_STOPPED     5
#endif
#ifndef CLD_CONTINUED
#define CLD_CONTINUED   6
#endif

#ifndef SIGEV_SIGNAL
#define SIGEV_SIGNAL    0
#endif
#ifndef SIGEV_NONE
#define SIGEV_NONE      1
#endif
#ifndef SIGEV_THREAD
#define SIGEV_THREAD    2
#endif
#ifndef SIGEV_THREAD_ID
#define SIGEV_THREAD_ID 4
#endif

#ifndef _UNION_SIGVAL_DEFINED
union sigval
{
    int    sival_int;    /* Integer signal value */
    void  *sival_ptr;    /* Pointer signal value */
};
#define _UNION_SIGVAL_DEFINED
#endif

#ifndef _STRUCT_SIGACTION_DEFINED
struct sigaction
{
    _sig_func_ptr sa_handler;
    sigset_t sa_mask;
    int sa_flags;
};
#define _STRUCT_SIGACTION_DEFINED
#endif

#ifndef _STRUCT_SIGEVENT_DEFINED
struct sigevent
{
    union sigval sigev_value;
    int          sigev_signo;                /* Signal number */
    int          sigev_notify;               /* Notification type */
    void         (*sigev_notify_function)( union sigval );
                                             /* Notification function */
    void         *sigev_notify_attributes;   /* Notification Attributes, really pthread_attr_t */
};
#define _STRUCT_SIGEVENT_DEFINED
#endif

#ifndef _SIGINFO_T_DEFINED
typedef struct {
    int si_signo, si_errno, 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;
#define _SIGINFO_T_DEFINED
#endif

#define si_pid          __si_fields.__si_common.__first.__piduid.si_pid
#define si_uid          __si_fields.__si_common.__first.__piduid.si_uid
#define si_status       __si_fields.__si_common.__second.__sigchld.si_status
#define si_utime        __si_fields.__si_common.__second.__sigchld.si_utime
#define si_stime        __si_fields.__si_common.__second.__sigchld.si_stime
#define si_value        __si_fields.__si_common.__second.si_value
#define si_addr         __si_fields.__sigfault.si_addr
#define si_addr_lsb     __si_fields.__sigfault.si_addr_lsb
#define si_lower        __si_fields.__sigfault.__first.__addr_bnd.si_lower
#define si_upper        __si_fields.__sigfault.__first.__addr_bnd.si_upper
#define si_pkey         __si_fields.__sigfault.__first.si_pkey
#define si_band         __si_fields.__sigpoll.si_band
#define si_fd           __si_fields.__sigpoll.si_fd
#define si_timerid      __si_fields.__si_common.__first.__timer.si_timerid
#define si_overrun      __si_fields.__si_common.__first.__timer.si_overrun
#define si_ptr          si_value.sival_ptr
#define si_int          si_value.sival_int
#define si_call_addr    __si_fields.__sigsys.si_call_addr
#define si_syscall      __si_fields.__sigsys.si_syscall
#define si_arch         __si_fields.__sigsys.si_arch

#define sigismember(what,sig) (((*(what)) & (1<<(sig))) != 0)

int sigprocmask(int how, const sigset_t *set, sigset_t *oset);
#ifndef sigemptyset
int sigemptyset(sigset_t *set);
#endif
int sigwait(const sigset_t *set, int *sig);
int raise(int sig);

#endif /*MLIBC_SIGNAL_H__*/
#endif /*__SYS_SIGNAL_H__*/