284c2b9aef
we no longer need to guard against access from hardware interrupt handlers. Additionally, if cloning a process with CLONE_SIGHAND, arrange to have the child process share the parent's lock so that signal state may be kept in sync. Partially addresses PR kern/37437.
114 lines
3.4 KiB
C
114 lines
3.4 KiB
C
/* $NetBSD: netbsd32_wait.c,v 1.18 2008/04/24 18:39:23 ad Exp $ */
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/*
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* Copyright (c) 1998, 2001 Matthew R. Green
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* All rights reserved.
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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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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* 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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__KERNEL_RCSID(0, "$NetBSD: netbsd32_wait.c,v 1.18 2008/04/24 18:39:23 ad Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/mount.h>
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#include <sys/time.h>
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#include <sys/wait.h>
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#include <sys/ptrace.h>
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#include <sys/resourcevar.h>
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#include <sys/vnode.h>
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#include <sys/pool.h>
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#include <sys/proc.h>
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#include <sys/dirent.h>
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#include <compat/netbsd32/netbsd32.h>
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#include <compat/netbsd32/netbsd32_syscallargs.h>
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#include <compat/netbsd32/netbsd32_conv.h>
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int
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netbsd32_wait4(struct lwp *l, const struct netbsd32_wait4_args *uap, register_t *retval)
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{
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/* {
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syscallarg(int) pid;
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syscallarg(netbsd32_intp) status;
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syscallarg(int) options;
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syscallarg(netbsd32_rusagep_t) rusage;
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} */
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int status, error;
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int was_zombie;
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struct rusage ru;
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struct netbsd32_rusage ru32;
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int pid = SCARG(uap, pid);
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error = do_sys_wait(l, &pid, &status, SCARG(uap, options),
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SCARG_P32(uap, rusage) != NULL ? &ru : NULL, &was_zombie);
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retval[0] = pid;
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if (pid == 0)
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return error;
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if (SCARG_P32(uap, rusage)) {
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netbsd32_from_rusage(&ru, &ru32);
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error = copyout(&ru32, SCARG_P32(uap, rusage), sizeof(ru32));
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}
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if (error == 0 && SCARG_P32(uap, status))
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error = copyout(&status, SCARG_P32(uap, status), sizeof(status));
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return error;
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}
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int
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netbsd32_getrusage(struct lwp *l, const struct netbsd32_getrusage_args *uap, register_t *retval)
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{
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/* {
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syscallarg(int) who;
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syscallarg(netbsd32_rusagep_t) rusage;
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} */
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struct proc *p = l->l_proc;
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struct rusage *rup;
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struct netbsd32_rusage ru;
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switch (SCARG(uap, who)) {
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case RUSAGE_SELF:
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rup = &p->p_stats->p_ru;
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mutex_enter(p->p_lock);
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calcru(p, &rup->ru_utime, &rup->ru_stime, NULL, NULL);
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mutex_exit(p->p_lock);
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break;
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case RUSAGE_CHILDREN:
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rup = &p->p_stats->p_cru;
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break;
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default:
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return (EINVAL);
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}
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netbsd32_from_rusage(rup, &ru);
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return copyout(&ru, SCARG_P32(uap, rusage), sizeof(ru));
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}
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