signal.h

/*
 * Copyright (C) 2013 Philippe Gerum <rpm@xenomai.org>.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */
#ifndef _COBALT_POSIX_SIGNAL_H
#define _COBALT_POSIX_SIGNAL_H
 
#include <linux/signal.h>
#include <cobalt/kernel/timer.h>
#include <cobalt/kernel/list.h>
#include <cobalt/uapi/signal.h>
#include <xenomai/posix/syscall.h>
 
struct cobalt_thread;
 
struct cobalt_sigpending {
        struct siginfo si;
        struct list_head next;
};
 
static inline
void cobalt_copy_siginfo(int code,
                         struct siginfo *__restrict__ dst,
                         const struct siginfo *__restrict__ src)
{
        dst->si_signo = src->si_signo;
        dst->si_errno = src->si_errno;
        dst->si_code = code;
 
        switch (code) {
        case SI_TIMER:
                dst->si_tid = src->si_tid;
                dst->si_overrun = src->si_overrun;
                dst->si_value = src->si_value;
                break;
        case SI_QUEUE:
        case SI_MESGQ:
                dst->si_value = src->si_value;
                fallthrough;
        case SI_USER:
                dst->si_pid = src->si_pid;
                dst->si_uid = src->si_uid;
        }
}
 
int __cobalt_sigwait(sigset_t *set);
 
int __cobalt_sigtimedwait(sigset_t *set,
                          const struct timespec64 *timeout,
                          void __user *u_si,
                          bool compat);
 
int __cobalt_sigwaitinfo(sigset_t *set,
                         void __user *u_si,
                         bool compat);
 
int __cobalt_sigqueue(pid_t pid, int sig, const union sigval *value);
 
int cobalt_signal_send(struct cobalt_thread *thread,
                       struct cobalt_sigpending *sigp,
                       int group);
 
int cobalt_signal_send_pid(pid_t pid,
                           struct cobalt_sigpending *sigp);
 
struct cobalt_sigpending *cobalt_signal_alloc(void);
 
void cobalt_signal_free(struct cobalt_sigpending *sigp);
 
void cobalt_signal_flush(struct cobalt_thread *thread);
 
int cobalt_signal_wait(sigset_t *set, struct siginfo *si,
                       xnticks_t timeout, xntmode_t tmode);
 
int __cobalt_kill(struct cobalt_thread *thread,
                  int sig, int group);
 
COBALT_SYSCALL_DECL(sigwait,
                    (const sigset_t __user *u_set, int __user *u_sig));
 
COBALT_SYSCALL_DECL(sigtimedwait,
                    (const sigset_t __user *u_set,
                     struct siginfo __user *u_si,
                     const struct __kernel_old_timespec __user *u_timeout));
 
COBALT_SYSCALL_DECL(sigtimedwait64,
                    (const sigset_t __user *u_set,
                     struct siginfo __user *u_si,
                     const struct __kernel_timespec __user *u_timeout));
 
COBALT_SYSCALL_DECL(sigwaitinfo,
                    (const sigset_t __user *u_set,
                     struct siginfo __user *u_si));
 
COBALT_SYSCALL_DECL(sigpending,
                    (old_sigset_t __user *u_set));
 
COBALT_SYSCALL_DECL(kill, (pid_t pid, int sig));
 
COBALT_SYSCALL_DECL(sigqueue,
                    (pid_t pid, int sig, const union sigval __user *u_value));
 
int cobalt_signal_init(void);
 
void cobalt_signal_cleanup(void);
 
#endif /* !_COBALT_POSIX_SIGNAL_H */