freebsd-dev/sys/compat/cloudabi/cloudabi_proc.c

/*-
 * Copyright (c) 2015 Nuxi, https://nuxi.nl/
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");

#include <sys/param.h>
#include <sys/proc.h>
#include <sys/syscallsubr.h>
#include <sys/sysproto.h>

#include <compat/cloudabi/cloudabi_proto.h>

int
cloudabi_sys_proc_exec(struct thread *td,
    struct cloudabi_sys_proc_exec_args *uap)
{

	/* Not implemented. */
	return (ENOSYS);
}

int
cloudabi_sys_proc_exit(struct thread *td,
    struct cloudabi_sys_proc_exit_args *uap)
{

	exit1(td, W_EXITCODE(uap->rval, 0));
	/* NOTREACHED */
}

int
cloudabi_sys_proc_fork(struct thread *td,
    struct cloudabi_sys_proc_fork_args *uap)
{

	/* Not implemented. */
	return (ENOSYS);
}

int
cloudabi_sys_proc_raise(struct thread *td,
    struct cloudabi_sys_proc_raise_args *uap)
{
	static const int signals[] = {
		[CLOUDABI_SIGABRT] = SIGABRT,
		[CLOUDABI_SIGALRM] = SIGALRM,
		[CLOUDABI_SIGBUS] = SIGBUS,
		[CLOUDABI_SIGCHLD] = SIGCHLD,
		[CLOUDABI_SIGCONT] = SIGCONT,
		[CLOUDABI_SIGFPE] = SIGFPE,
		[CLOUDABI_SIGHUP] = SIGHUP,
		[CLOUDABI_SIGILL] = SIGILL,
		[CLOUDABI_SIGINT] = SIGINT,
		[CLOUDABI_SIGKILL] = SIGKILL,
		[CLOUDABI_SIGPIPE] = SIGPIPE,
		[CLOUDABI_SIGQUIT] = SIGQUIT,
		[CLOUDABI_SIGSEGV] = SIGSEGV,
		[CLOUDABI_SIGSTOP] = SIGSTOP,
		[CLOUDABI_SIGSYS] = SIGSYS,
		[CLOUDABI_SIGTERM] = SIGTERM,
		[CLOUDABI_SIGTRAP] = SIGTRAP,
		[CLOUDABI_SIGTSTP] = SIGTSTP,
		[CLOUDABI_SIGTTIN] = SIGTTIN,
		[CLOUDABI_SIGTTOU] = SIGTTOU,
		[CLOUDABI_SIGURG] = SIGURG,
		[CLOUDABI_SIGUSR1] = SIGUSR1,
		[CLOUDABI_SIGUSR2] = SIGUSR2,
		[CLOUDABI_SIGVTALRM] = SIGVTALRM,
		[CLOUDABI_SIGXCPU] = SIGXCPU,
		[CLOUDABI_SIGXFSZ] = SIGXFSZ,
	};
	static const struct sigaction sigdfl = {
		.sa_handler = SIG_DFL,
	};
	struct kill_args kill_args = {
		.pid = td->td_proc->p_pid,
	};

	if (uap->sig >= nitems(signals) ||
	    (uap->sig != 0 && signals[uap->sig] == 0)) {
		/* Invalid signal. */
		return (EINVAL);
	}
	kill_args.signum = signals[uap->sig];

	/* Restore to default signal action and send signal. */
	kern_sigaction(td, kill_args.signum, &sigdfl, NULL, 0);
	return (sys_kill(td, &kill_args));
}