/* $NetBSD: netbsd32_mqueue.c,v 1.7 2019/01/27 02:08:40 pgoyette Exp $ */
/*-
* Copyright (c) 2008 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software developed for The NetBSD Foundation.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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: netbsd32_mqueue.c,v 1.7 2019/01/27 02:08:40 pgoyette Exp $");
#if defined(_KERNEL_OPT)
#include "opt_compat_netbsd.h"
#endif
#include <sys/param.h>
#include <sys/dirent.h>
#include <sys/filedesc.h>
#include <sys/fcntl.h>
#include <sys/module.h>
#include <sys/syscallvar.h>
#include <compat/netbsd32/netbsd32.h>
#include <compat/netbsd32/netbsd32_syscall.h>
#include <compat/netbsd32/netbsd32_syscallargs.h>
#include <compat/netbsd32/netbsd32_conv.h>
int
netbsd32_mq_open(struct lwp *l, const struct netbsd32_mq_open_args *uap,
register_t *retval)
{
/* {
syscallarg(const netbsd32_charp) name;
syscallarg(int) oflag;
syscallarg(mode_t) mode;
syscallarg(struct netbsd32_mq_attrp_t) attr;
} */
struct netbsd32_mq_attr attr32;
struct mq_attr *attr = NULL, a;
int error;
if ((SCARG(uap, oflag) & O_CREAT) && SCARG_P32(uap, attr) != NULL) {
error = copyin(SCARG_P32(uap, attr), &attr32, sizeof(attr32));
if (error)
return error;
netbsd32_to_mq_attr(&attr32, &a);
attr = &a;
}
return mq_handle_open(l, SCARG_P32(uap, name), SCARG(uap, oflag),
SCARG(uap, mode), attr, retval);
}
int
netbsd32_mq_close(struct lwp *l, const struct netbsd32_mq_close_args *uap,
register_t *retval)
{
/* {
syscallarg(mqd_t) mqdes;
} */
return netbsd32_close(l, (const void*)uap, retval);
}
int
netbsd32_mq_unlink(struct lwp *l, const struct netbsd32_mq_unlink_args *uap,
register_t *retval)
{
/* {
syscallarg(const netbsd32_charp) name;
} */
struct sys_mq_unlink_args ua;
NETBSD32TOP_UAP(name, const char);
return sys_mq_unlink(l, &ua, retval);
}
int
netbsd32_mq_getattr(struct lwp *l, const struct netbsd32_mq_getattr_args *uap,
register_t *retval)
{
/* {
syscallarg(mqd_t) mqdes;
syscallarg(netbsd32_mq_attrp_t) mqstat;
} */
struct mqueue *mq;
struct mq_attr attr;
struct netbsd32_mq_attr a32;
int error;
error = mqueue_get(SCARG(uap, mqdes), 0, &mq);
if (error)
return error;
memcpy(&attr, &mq->mq_attrib, sizeof(struct mq_attr));
mutex_exit(&mq->mq_mtx);
fd_putfile((int)SCARG(uap, mqdes));
netbsd32_from_mq_attr(&attr, &a32);
return copyout(&a32, SCARG_P32(uap,mqstat), sizeof(a32));
}
int
netbsd32_mq_setattr(struct lwp *l, const struct netbsd32_mq_setattr_args *uap,
register_t *retval)
{
/* {
syscallarg(mqd_t) mqdes;
syscallarg(const netbsd32_mq_attrp_t) mqstat;
syscallarg(netbsd32_mq_attrp_t) omqstat;
} */
struct mqueue *mq;
struct netbsd32_mq_attr attr32;
struct mq_attr attr;
int error, nonblock;
error = copyin(SCARG_P32(uap, mqstat), &attr32, sizeof(attr32));
if (error)
return error;
netbsd32_to_mq_attr(&attr32, &attr);
nonblock = (attr.mq_flags & O_NONBLOCK);
error = mqueue_get(SCARG(uap, mqdes), 0, &mq);
if (error)
return error;
/* Copy the old attributes, if needed */
if (SCARG_P32(uap, omqstat))
memcpy(&attr, &mq->mq_attrib, sizeof(struct mq_attr));
/* Ignore everything, except O_NONBLOCK */
if (nonblock)
mq->mq_attrib.mq_flags |= O_NONBLOCK;
else
mq->mq_attrib.mq_flags &= ~O_NONBLOCK;
mutex_exit(&mq->mq_mtx);
fd_putfile((int)SCARG(uap, mqdes));
/*
* Copy the data to the user-space.
* Note: According to POSIX, the new attributes should not be set in
* case of fail - this would be violated.
*/
if (SCARG_P32(uap, omqstat)) {
netbsd32_from_mq_attr(&attr, &attr32);
error = copyout(&attr32, SCARG_P32(uap, omqstat),
sizeof(attr32));
}
return error;
}
int
netbsd32_mq_notify(struct lwp *l, const struct netbsd32_mq_notify_args *uap,
register_t *result)
{
/* {
syscallarg(mqd_t) mqdes;
syscallarg(const netbsd32_sigeventp_t) notification;
} */
struct mqueue *mq;
struct netbsd32_sigevent sig32;
int error;
if (SCARG_P32(uap, notification)) {
/* Get the signal from user-space */
error = copyin(SCARG_P32(uap, notification), &sig32,
sizeof(sig32));
if (error)
return error;
if (sig32.sigev_notify == SIGEV_SIGNAL &&
(sig32.sigev_signo <=0 || sig32.sigev_signo >= NSIG))
return EINVAL;
}
error = mqueue_get(SCARG(uap, mqdes), 0, &mq);
if (error) {
return error;
}
if (SCARG_P32(uap, notification)) {
/* Register notification: set the signal and target process */
if (mq->mq_notify_proc == NULL) {
netbsd32_to_sigevent(&sig32, &mq->mq_sig_notify);
mq->mq_notify_proc = l->l_proc;
} else {
/* Fail if someone else already registered */
error = EBUSY;
}
} else {
/* Unregister the notification */
mq->mq_notify_proc = NULL;
}
mutex_exit(&mq->mq_mtx);
fd_putfile((int)SCARG(uap, mqdes));
return error;
}
int
netbsd32_mq_send(struct lwp *l, const struct netbsd32_mq_send_args *uap,
register_t *result)
{
/* {
syscallarg(mqd_t) mqdes;
syscallarg(const netbsd32_charp) msg_ptr;
syscallarg(netbsd32_size_t) msg_len;
syscallarg(unsigned) msg_prio;
} */
return mq_send1(SCARG(uap, mqdes), SCARG_P32(uap, msg_ptr),
SCARG(uap, msg_len), SCARG(uap, msg_prio), NULL);
}
int
netbsd32_mq_receive(struct lwp *l, const struct netbsd32_mq_receive_args *uap,
register_t *retval)
{
/* {
syscallarg(mqd_t) mqdes;
syscallarg(netbsd32_charp) msg_ptr;
syscallarg(netbsd32_size_t) msg_len;
syscallarg(netbsd32_uintp) msg_prio;
} */
ssize_t mlen;
int error;
error = mq_recv1(SCARG(uap, mqdes), SCARG_P32(uap, msg_ptr),
SCARG(uap, msg_len), SCARG_P32(uap, msg_prio), NULL, &mlen);
if (error == 0)
*retval = mlen;
return error;
}
int
netbsd32___mq_timedsend50(struct lwp *l,
const struct netbsd32___mq_timedsend50_args *uap, register_t *retval)
{
/* {
syscallarg(mqd_t) mqdes;
syscallarg(const netbsd32_charp) msg_ptr;
syscallarg(netbsd32_size_t) msg_len;
syscallarg(unsigned) msg_prio;
syscallarg(const netbsd32_timespecp_t) abs_timeout;
} */
struct timespec ts, *tsp;
struct netbsd32_timespec ts32;
int error;
/* Get and convert time value */
if (SCARG_P32(uap, abs_timeout)) {
error = copyin(SCARG_P32(uap, abs_timeout), &ts32,
sizeof(ts32));
if (error)
return error;
netbsd32_to_timespec(&ts32, &ts);
tsp = &ts;
} else {
tsp = NULL;
}
return mq_send1(SCARG(uap, mqdes), SCARG_P32(uap, msg_ptr),
SCARG(uap, msg_len), SCARG(uap, msg_prio), tsp);
}
int
netbsd32___mq_timedreceive50(struct lwp *l,
const struct netbsd32___mq_timedreceive50_args *uap, register_t *retval)
{
/* {
syscallarg(mqd_t) mqdes;
syscallarg(netbsd32_charp) msg_ptr;
syscallarg(netbsd32_size_t) msg_len;
syscallarg(netbsd32_uintp) msg_prio;
syscallarg(const netbsd32_timespecp_t) abs_timeout;
} */
struct timespec ts, *tsp;
struct netbsd32_timespec ts32;
ssize_t mlen;
int error;
/* Get and convert time value */
if (SCARG_P32(uap, abs_timeout)) {
error = copyin(SCARG_P32(uap, abs_timeout), &ts32,
sizeof(ts32));
if (error)
return error;
netbsd32_to_timespec(&ts32, &ts);
tsp = &ts;
} else {
tsp = NULL;
}
error = mq_recv1(SCARG(uap, mqdes), SCARG_P32(uap, msg_ptr),
SCARG(uap, msg_len), SCARG_P32(uap, msg_prio), tsp, &mlen);
if (error == 0)
*retval = mlen;
return error;
}
#ifdef COMPAT_50
int
compat_50_netbsd32_mq_timedsend(struct lwp *l,
const struct compat_50_netbsd32_mq_timedsend_args *uap,
register_t *retval)
{
/* {
syscallarg(mqd_t) mqdes;
syscallarg(const netbsd32_charp) msg_ptr;
syscallarg(netbsd32_size_t) msg_len;
syscallarg(unsigned) msg_prio;
syscallarg(const netbsd32_timespec50p_t) abs_timeout;
} */
struct timespec ts, *tsp;
struct netbsd32_timespec50 ts32;
int error;
/* Get and convert time value */
if (SCARG_P32(uap, abs_timeout)) {
error = copyin(SCARG_P32(uap, abs_timeout), &ts32,
sizeof(ts32));
if (error)
return error;
netbsd32_to_timespec50(&ts32, &ts);
tsp = &ts;
} else {
tsp = NULL;
}
return mq_send1(SCARG(uap, mqdes), SCARG_P32(uap, msg_ptr),
SCARG(uap, msg_len), SCARG(uap, msg_prio), tsp);
}
int
compat_50_netbsd32_mq_timedreceive(struct lwp *l,
const struct compat_50_netbsd32_mq_timedreceive_args *uap,
register_t *retval)
{
/* {
syscallarg(mqd_t) mqdes;
syscallarg(netbsd32_charp) msg_ptr;
syscallarg(netbsd32_size_t) msg_len;
syscallarg(netbsd32_uintp) msg_prio;
syscallarg(const netbsd32_timespec50p_t) abs_timeout;
} */
struct timespec ts, *tsp;
struct netbsd32_timespec50 ts32;
ssize_t mlen;
int error;
/* Get and convert time value */
if (SCARG_P32(uap, abs_timeout)) {
error = copyin(SCARG_P32(uap, abs_timeout), &ts32,
sizeof(ts32));
if (error)
return error;
netbsd32_to_timespec50(&ts32, &ts);
tsp = &ts;
} else {
tsp = NULL;
}
error = mq_recv1(SCARG(uap, mqdes), SCARG_P32(uap, msg_ptr),
SCARG(uap, msg_len), SCARG_P32(uap, msg_prio), tsp, &mlen);
if (error == 0)
*retval = mlen;
return error;
}
#endif /* COMPAT_50 */
#define _PKG_ENTRY(name) \
{ NETBSD32_SYS_ ## name, 0, (sy_call_t *)name }
static const struct syscall_package compat_mqueue_syscalls[] = {
_PKG_ENTRY(netbsd32_mq_open),
_PKG_ENTRY(netbsd32_mq_close),
_PKG_ENTRY(netbsd32_mq_unlink),
_PKG_ENTRY(netbsd32_mq_getattr),
_PKG_ENTRY(netbsd32_mq_setattr),
_PKG_ENTRY(netbsd32_mq_notify),
_PKG_ENTRY(netbsd32_mq_send),
_PKG_ENTRY(netbsd32_mq_receive),
_PKG_ENTRY(netbsd32___mq_timedsend50),
_PKG_ENTRY(netbsd32___mq_timedreceive50),
#ifdef COMPAT_50
_PKG_ENTRY(compat_50_netbsd32_mq_timedsend),
_PKG_ENTRY(compat_50_netbsd32_mq_timedreceive),
#endif
{0, 0, NULL}
};
MODULE(MODULE_CLASS_EXEC, compat_netbsd32_mqueue, "mqueue,compat_netbsd32");
static int
compat_netbsd32_mqueue_modcmd(modcmd_t cmd, void *arg)
{
int error;
switch (cmd) {
case MODULE_CMD_INIT:
error = syscall_establish(&emul_netbsd32,
compat_mqueue_syscalls);
break;
case MODULE_CMD_FINI:
error = syscall_disestablish(&emul_netbsd32,
compat_mqueue_syscalls);
break;
default:
error = ENOTTY;
break;
}
return error;
}