/*      $NetBSD: linux32_wait.c,v 1.13 2023/08/18 19:41:20 christos Exp $ */

/*-
* Copyright (c) 2006 Emmanuel Dreyfus, all rights reserved.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
*    must display the following acknowledgement:
*      This product includes software developed by Emmanuel Dreyfus
* 4. The name of the author may not be used to endorse or promote
*    products derived from this software without specific prior written
*    permission.
*
* THIS SOFTWARE IS PROVIDED BY THE 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>

__KERNEL_RCSID(0, "$NetBSD: linux32_wait.c,v 1.13 2023/08/18 19:41:20 christos Exp $");

#include <sys/types.h>
#include <sys/param.h>
#include <sys/fstypes.h>
#include <sys/signal.h>
#include <sys/dirent.h>
#include <sys/kernel.h>
#include <sys/fcntl.h>
#include <sys/select.h>
#include <sys/proc.h>
#include <sys/ucred.h>
#include <sys/swap.h>
#include <sys/wait.h>

#include <machine/types.h>

#include <sys/syscallargs.h>

#include <compat/netbsd32/netbsd32.h>
#include <compat/netbsd32/netbsd32_conv.h>
#include <compat/netbsd32/netbsd32_syscallargs.h>

#include <compat/linux/common/linux_types.h>
#include <compat/linux/common/linux_signal.h>
#include <compat/linux/common/linux_machdep.h>
#include <compat/linux/common/linux_misc.h>
#include <compat/linux/common/linux_oldolduname.h>
#include <compat/linux/common/linux_ipc.h>
#include <compat/linux/common/linux_sem.h>
#include <compat/linux/linux_syscallargs.h>

#include <compat/linux32/common/linux32_types.h>
#include <compat/linux32/common/linux32_signal.h>
#include <compat/linux32/common/linux32_machdep.h>
#include <compat/linux32/common/linux32_sysctl.h>
#include <compat/linux32/common/linux32_socketcall.h>
#include <compat/linux32/linux32_syscallargs.h>

int
linux32_sys_waitpid(struct lwp *l, const struct linux32_sys_waitpid_args *uap, register_t *retval)
{
       /* {
               syscallarg(int) pid;
               syscallarg(netbsd32_intp) status;
               syscallarg(int) options;
       } */
       struct linux32_sys_wait4_args ua;

       SCARG(&ua, pid) = SCARG(uap, pid);
       SCARG(&ua, status) = SCARG(uap, status);
       SCARG(&ua, options) = SCARG(uap, options);
       NETBSD32PTR32(SCARG(&ua, rusage), NULL);

       return linux32_sys_wait4(l, &ua, retval);
}

int
linux32_sys_wait4(struct lwp *l, const struct linux32_sys_wait4_args *uap, register_t *retval)
{
       /* {
               syscallarg(int) pid;
               syscallarg(netbsd32_intp) status;
               syscallarg(int) options;
               syscallarg(netbsd32_rusage50p_t) rusage;
       } */
       int error, status, linux_options, options, pid;
       struct netbsd32_rusage50 ru32;
       struct rusage ru;
       proc_t *p;

       linux_options = SCARG(uap, options);
       if (linux_options & ~(LINUX_WAIT4_KNOWNFLAGS))
               return EINVAL;

       options = 0;
       if (linux_options & LINUX_WNOHANG)
               options |= WNOHANG;
       if (linux_options & LINUX_WUNTRACED)
               options |= WUNTRACED;
       if (linux_options & LINUX_WALL)
               options |= WALLSIG;
       if (linux_options & LINUX_WCLONE)
               options |= WALTSIG;

       pid = SCARG(uap, pid);
       error = do_sys_wait(&pid, &status, options,
           SCARG_P32(uap, rusage) != NULL ? &ru : NULL);
       retval[0] = pid;
       if (pid == 0)
               return error;

       p = curproc;
       mutex_enter(p->p_lock);
       sigdelset(&p->p_sigpend.sp_set, SIGCHLD);       /* XXXAD ksiginfo leak */
       mutex_exit(p->p_lock);

       if (SCARG_P32(uap, rusage) != NULL) {
               netbsd32_from_rusage50(&ru, &ru32);
               error = copyout(&ru32, SCARG_P32(uap, rusage), sizeof(ru32));
       }

       if (error == 0 && SCARG_P32(uap, status) != NULL) {
               status = bsd_to_linux_wstat(status);
               error = copyout(&status, SCARG_P32(uap, status), sizeof(status));
       }

       return error;
}