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https://github.com/Stichting-MINIX-Research-Foundation/netbsd.git
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325 lines
8.4 KiB
C
325 lines
8.4 KiB
C
/* $NetBSD: netbsd32_mqueue.c,v 1.5 2015/06/30 11:56:27 christos Exp $ */
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/*-
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* Copyright (c) 2008 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software developed for The NetBSD Foundation.
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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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: netbsd32_mqueue.c,v 1.5 2015/06/30 11:56:27 christos Exp $");
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#if defined(_KERNEL_OPT)
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#include "opt_compat_netbsd.h"
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#endif
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#include <sys/param.h>
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#include <sys/dirent.h>
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#include <sys/filedesc.h>
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#include <sys/fcntl.h>
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#include <sys/module.h>
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#include <compat/netbsd32/netbsd32.h>
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#include <compat/netbsd32/netbsd32_syscall.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_mq_open(struct lwp *l, const struct netbsd32_mq_open_args *uap,
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register_t *retval)
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{
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/* {
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syscallarg(const netbsd32_charp) name;
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syscallarg(int) oflag;
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syscallarg(mode_t) mode;
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syscallarg(struct netbsd32_mq_attrp_t) attr;
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} */
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struct netbsd32_mq_attr attr32;
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struct mq_attr *attr = NULL, a;
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int error;
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if ((SCARG(uap, oflag) & O_CREAT) && SCARG_P32(uap, attr) != NULL) {
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error = copyin(SCARG_P32(uap, attr), &attr32, sizeof(attr32));
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if (error)
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return error;
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netbsd32_to_mq_attr(&attr32, &a);
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attr = &a;
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}
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return mq_handle_open(l, SCARG_P32(uap, name), SCARG(uap, oflag),
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SCARG(uap, mode), attr, retval);
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}
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int
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netbsd32_mq_close(struct lwp *l, const struct netbsd32_mq_close_args *uap,
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register_t *retval)
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{
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/* {
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syscallarg(mqd_t) mqdes;
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} */
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return netbsd32_close(l, (const void*)uap, retval);
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}
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int
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netbsd32_mq_unlink(struct lwp *l, const struct netbsd32_mq_unlink_args *uap,
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register_t *retval)
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{
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/* {
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syscallarg(const netbsd32_charp) name;
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} */
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struct sys_mq_unlink_args ua;
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NETBSD32TOP_UAP(name, const char);
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return sys_mq_unlink(l, &ua, retval);
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}
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int
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netbsd32_mq_getattr(struct lwp *l, const struct netbsd32_mq_getattr_args *uap,
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register_t *retval)
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{
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/* {
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syscallarg(mqd_t) mqdes;
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syscallarg(netbsd32_mq_attrp_t) mqstat;
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} */
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struct mqueue *mq;
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struct mq_attr attr;
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struct netbsd32_mq_attr a32;
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int error;
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error = mqueue_get(SCARG(uap, mqdes), 0, &mq);
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if (error)
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return error;
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memcpy(&attr, &mq->mq_attrib, sizeof(struct mq_attr));
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mutex_exit(&mq->mq_mtx);
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fd_putfile((int)SCARG(uap, mqdes));
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netbsd32_from_mq_attr(&attr, &a32);
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return copyout(&a32, SCARG_P32(uap,mqstat), sizeof(a32));
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}
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int
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netbsd32_mq_setattr(struct lwp *l, const struct netbsd32_mq_setattr_args *uap,
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register_t *retval)
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{
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/* {
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syscallarg(mqd_t) mqdes;
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syscallarg(const netbsd32_mq_attrp_t) mqstat;
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syscallarg(netbsd32_mq_attrp_t) omqstat;
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} */
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struct mqueue *mq;
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struct netbsd32_mq_attr attr32;
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struct mq_attr attr;
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int error, nonblock;
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error = copyin(SCARG_P32(uap, mqstat), &attr32, sizeof(attr32));
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if (error)
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return error;
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netbsd32_to_mq_attr(&attr32, &attr);
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nonblock = (attr.mq_flags & O_NONBLOCK);
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error = mqueue_get(SCARG(uap, mqdes), 0, &mq);
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if (error)
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return error;
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/* Copy the old attributes, if needed */
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if (SCARG_P32(uap, omqstat))
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memcpy(&attr, &mq->mq_attrib, sizeof(struct mq_attr));
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/* Ignore everything, except O_NONBLOCK */
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if (nonblock)
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mq->mq_attrib.mq_flags |= O_NONBLOCK;
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else
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mq->mq_attrib.mq_flags &= ~O_NONBLOCK;
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mutex_exit(&mq->mq_mtx);
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fd_putfile((int)SCARG(uap, mqdes));
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/*
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* Copy the data to the user-space.
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* Note: According to POSIX, the new attributes should not be set in
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* case of fail - this would be violated.
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*/
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if (SCARG_P32(uap, omqstat)) {
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netbsd32_from_mq_attr(&attr, &attr32);
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error = copyout(&attr32, SCARG_P32(uap, omqstat),
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sizeof(attr32));
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}
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return error;
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}
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int
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netbsd32_mq_notify(struct lwp *l, const struct netbsd32_mq_notify_args *uap,
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register_t *result)
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{
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/* {
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syscallarg(mqd_t) mqdes;
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syscallarg(const netbsd32_sigeventp_t) notification;
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} */
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struct mqueue *mq;
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struct netbsd32_sigevent sig32;
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int error;
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if (SCARG_P32(uap, notification)) {
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/* Get the signal from user-space */
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error = copyin(SCARG_P32(uap, notification), &sig32,
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sizeof(sig32));
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if (error)
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return error;
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if (sig32.sigev_notify == SIGEV_SIGNAL &&
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(sig32.sigev_signo <=0 || sig32.sigev_signo >= NSIG))
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return EINVAL;
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}
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error = mqueue_get(SCARG(uap, mqdes), 0, &mq);
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if (error) {
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return error;
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}
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if (SCARG_P32(uap, notification)) {
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/* Register notification: set the signal and target process */
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if (mq->mq_notify_proc == NULL) {
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netbsd32_to_sigevent(&sig32, &mq->mq_sig_notify);
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mq->mq_notify_proc = l->l_proc;
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} else {
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/* Fail if someone else already registered */
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error = EBUSY;
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}
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} else {
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/* Unregister the notification */
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mq->mq_notify_proc = NULL;
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}
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mutex_exit(&mq->mq_mtx);
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fd_putfile((int)SCARG(uap, mqdes));
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return error;
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}
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int
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netbsd32_mq_send(struct lwp *l, const struct netbsd32_mq_send_args *uap,
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register_t *result)
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{
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/* {
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syscallarg(mqd_t) mqdes;
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syscallarg(const netbsd32_charp) msg_ptr;
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syscallarg(netbsd32_size_t) msg_len;
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syscallarg(unsigned) msg_prio;
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} */
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return mq_send1(SCARG(uap, mqdes), SCARG_P32(uap, msg_ptr),
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SCARG(uap, msg_len), SCARG(uap, msg_prio), NULL);
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}
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int
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netbsd32_mq_receive(struct lwp *l, const struct netbsd32_mq_receive_args *uap,
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register_t *retval)
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{
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/* {
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syscallarg(mqd_t) mqdes;
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syscallarg(netbsd32_charp) msg_ptr;
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syscallarg(netbsd32_size_t) msg_len;
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syscallarg(netbsd32_uintp) msg_prio;
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} */
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ssize_t mlen;
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int error;
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error = mq_recv1(SCARG(uap, mqdes), SCARG_P32(uap, msg_ptr),
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SCARG(uap, msg_len), SCARG_P32(uap, msg_prio), NULL, &mlen);
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if (error == 0)
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*retval = mlen;
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return error;
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}
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int
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netbsd32___mq_timedsend50(struct lwp *l,
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const struct netbsd32___mq_timedsend50_args *uap, register_t *retval)
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{
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/* {
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syscallarg(mqd_t) mqdes;
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syscallarg(const netbsd32_charp) msg_ptr;
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syscallarg(netbsd32_size_t) msg_len;
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syscallarg(unsigned) msg_prio;
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syscallarg(const netbsd32_timespecp_t) abs_timeout;
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} */
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struct timespec ts, *tsp;
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struct netbsd32_timespec ts32;
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int error;
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/* Get and convert time value */
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if (SCARG_P32(uap, abs_timeout)) {
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error = copyin(SCARG_P32(uap, abs_timeout), &ts32,
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sizeof(ts32));
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if (error)
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return error;
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netbsd32_to_timespec(&ts32, &ts);
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tsp = &ts;
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} else {
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tsp = NULL;
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}
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return mq_send1(SCARG(uap, mqdes), SCARG_P32(uap, msg_ptr),
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SCARG(uap, msg_len), SCARG(uap, msg_prio), tsp);
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}
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int
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netbsd32___mq_timedreceive50(struct lwp *l,
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const struct netbsd32___mq_timedreceive50_args *uap, register_t *retval)
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{
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/* {
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syscallarg(mqd_t) mqdes;
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syscallarg(netbsd32_charp) msg_ptr;
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syscallarg(netbsd32_size_t) msg_len;
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syscallarg(netbsd32_uintp) msg_prio;
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syscallarg(const netbsd32_timespecp_t) abs_timeout;
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} */
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struct timespec ts, *tsp;
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struct netbsd32_timespec ts32;
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ssize_t mlen;
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int error;
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/* Get and convert time value */
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if (SCARG_P32(uap, abs_timeout)) {
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error = copyin(SCARG_P32(uap, abs_timeout), &ts32,
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sizeof(ts32));
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if (error)
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return error;
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netbsd32_to_timespec(&ts32, &ts);
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tsp = &ts;
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} else {
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tsp = NULL;
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}
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error = mq_recv1(SCARG(uap, mqdes), SCARG_P32(uap, msg_ptr),
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SCARG(uap, msg_len), SCARG_P32(uap, msg_prio), tsp, &mlen);
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if (error == 0)
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*retval = mlen;
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return error;
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}
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