4f1905177a
CloudABI does not provide an explicit kill() system call, for the reason that there is no access to the global process namespace. Instead, it offers a raise() system call that can at least be used to terminate the process abnormally. CloudABI does not support installing signal handlers. CloudABI's raise() system call should behave as if the default policy is set up. Call into kern_sigaction(SIG_DFL) before calling sys_kill() to force this. Obtained from: https://github.com/NuxiNL/freebsd
113 lines
3.3 KiB
C
113 lines
3.3 KiB
C
/*-
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* Copyright (c) 2015 Nuxi, https://nuxi.nl/
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/proc.h>
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#include <sys/syscallsubr.h>
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#include <sys/sysproto.h>
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#include <compat/cloudabi/cloudabi_proto.h>
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int
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cloudabi_sys_proc_exec(struct thread *td,
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struct cloudabi_sys_proc_exec_args *uap)
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{
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/* Not implemented. */
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return (ENOSYS);
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}
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int
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cloudabi_sys_proc_exit(struct thread *td,
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struct cloudabi_sys_proc_exit_args *uap)
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{
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exit1(td, W_EXITCODE(uap->rval, 0));
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/* NOTREACHED */
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}
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int
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cloudabi_sys_proc_fork(struct thread *td,
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struct cloudabi_sys_proc_fork_args *uap)
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{
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/* Not implemented. */
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return (ENOSYS);
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}
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int
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cloudabi_sys_proc_raise(struct thread *td,
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struct cloudabi_sys_proc_raise_args *uap)
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{
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static const int signals[] = {
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[CLOUDABI_SIGABRT] = SIGABRT,
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[CLOUDABI_SIGALRM] = SIGALRM,
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[CLOUDABI_SIGBUS] = SIGBUS,
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[CLOUDABI_SIGCHLD] = SIGCHLD,
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[CLOUDABI_SIGCONT] = SIGCONT,
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[CLOUDABI_SIGFPE] = SIGFPE,
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[CLOUDABI_SIGHUP] = SIGHUP,
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[CLOUDABI_SIGILL] = SIGILL,
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[CLOUDABI_SIGINT] = SIGINT,
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[CLOUDABI_SIGKILL] = SIGKILL,
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[CLOUDABI_SIGPIPE] = SIGPIPE,
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[CLOUDABI_SIGQUIT] = SIGQUIT,
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[CLOUDABI_SIGSEGV] = SIGSEGV,
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[CLOUDABI_SIGSTOP] = SIGSTOP,
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[CLOUDABI_SIGSYS] = SIGSYS,
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[CLOUDABI_SIGTERM] = SIGTERM,
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[CLOUDABI_SIGTRAP] = SIGTRAP,
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[CLOUDABI_SIGTSTP] = SIGTSTP,
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[CLOUDABI_SIGTTIN] = SIGTTIN,
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[CLOUDABI_SIGTTOU] = SIGTTOU,
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[CLOUDABI_SIGURG] = SIGURG,
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[CLOUDABI_SIGUSR1] = SIGUSR1,
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[CLOUDABI_SIGUSR2] = SIGUSR2,
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[CLOUDABI_SIGVTALRM] = SIGVTALRM,
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[CLOUDABI_SIGXCPU] = SIGXCPU,
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[CLOUDABI_SIGXFSZ] = SIGXFSZ,
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};
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static const struct sigaction sigdfl = {
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.sa_handler = SIG_DFL,
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};
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struct kill_args kill_args = {
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.pid = td->td_proc->p_pid,
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};
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if (uap->sig >= nitems(signals) ||
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(uap->sig != 0 && signals[uap->sig] == 0)) {
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/* Invalid signal. */
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return (EINVAL);
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}
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kill_args.signum = signals[uap->sig];
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/* Restore to default signal action and send signal. */
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kern_sigaction(td, kill_args.signum, &sigdfl, NULL, 0);
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return (sys_kill(td, &kill_args));
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}
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