149 lines
4.2 KiB
C
149 lines
4.2 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/capsicum.h>
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#include <sys/filedesc.h>
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#include <sys/imgact.h>
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#include <sys/lock.h>
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#include <sys/module.h>
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#include <sys/mutex.h>
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#include <sys/proc.h>
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#include <sys/signalvar.h>
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#include <sys/syscallsubr.h>
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#include <sys/unistd.h>
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#include <contrib/cloudabi/cloudabi_types_common.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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struct image_args args;
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struct vmspace *oldvmspace;
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int error;
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error = pre_execve(td, &oldvmspace);
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if (error != 0)
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return (error);
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error = exec_copyin_data_fds(td, &args, uap->data, uap->data_len,
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uap->fds, uap->fds_len);
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if (error == 0) {
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args.fd = uap->fd;
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error = kern_execve(td, &args, NULL);
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}
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post_execve(td, error, oldvmspace);
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return (error);
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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, 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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struct fork_req fr;
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struct filecaps fcaps = {};
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int error, fd;
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cap_rights_init(&fcaps.fc_rights, CAP_FSTAT, CAP_EVENT);
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bzero(&fr, sizeof(fr));
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fr.fr_flags = RFFDG | RFPROC | RFPROCDESC;
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fr.fr_pd_fd = &fd;
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fr.fr_pd_fcaps = &fcaps;
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error = fork1(td, &fr);
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if (error != 0)
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return (error);
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/* Return the file descriptor to the parent process. */
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td->td_retval[0] = fd;
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return (0);
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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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ksiginfo_t ksi;
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struct proc *p;
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if (uap->sig >= nitems(signals) || signals[uap->sig] == 0) {
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/* Invalid signal, or the null signal. */
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return (uap->sig == 0 ? 0 : EINVAL);
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}
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p = td->td_proc;
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ksiginfo_init(&ksi);
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ksi.ksi_signo = signals[uap->sig];
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ksi.ksi_code = SI_USER;
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ksi.ksi_pid = p->p_pid;
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ksi.ksi_uid = td->td_ucred->cr_ruid;
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PROC_LOCK(p);
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pksignal(p, ksi.ksi_signo, &ksi);
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PROC_UNLOCK(p);
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return (0);
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}
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MODULE_VERSION(cloudabi, 1);
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