231 lines
7.0 KiB
C
231 lines
7.0 KiB
C
/* $NetBSD: irix_swap.c,v 1.13 2005/02/26 23:10:18 perry Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2002 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Emmanuel Dreyfus.
|
|
*
|
|
* 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 the NetBSD
|
|
* Foundation, Inc. and its contributors.
|
|
* 4. Neither the name of The NetBSD Foundation nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* 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: irix_swap.c,v 1.13 2005/02/26 23:10:18 perry Exp $");
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/signal.h>
|
|
#include <sys/param.h>
|
|
#include <sys/mount.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/swap.h>
|
|
#include <sys/vnode.h>
|
|
#include <sys/namei.h>
|
|
#include <sys/sa.h>
|
|
#include <sys/syscallargs.h>
|
|
|
|
#include <uvm/uvm_page.h>
|
|
#include <uvm/uvm_swap.h>
|
|
|
|
#include <compat/common/compat_util.h>
|
|
|
|
#include <compat/irix/irix_types.h>
|
|
#include <compat/irix/irix_signal.h>
|
|
#include <compat/irix/irix_swap.h>
|
|
#include <compat/irix/irix_syscall.h>
|
|
#include <compat/irix/irix_syscallargs.h>
|
|
|
|
extern struct lock swap_syscall_lock;
|
|
|
|
int
|
|
irix_sys_swapctl(l, v, retval)
|
|
struct lwp *l;
|
|
void *v;
|
|
register_t *retval;
|
|
{
|
|
struct irix_sys_swapctl_args /* {
|
|
syscallarg(int) cmd;
|
|
syscallarg(void *) arg;
|
|
} */ *uap = v;
|
|
struct sys_swapctl_args cup;
|
|
int error = 0;
|
|
|
|
#ifdef DEBUG_IRIX
|
|
printf("irix_sys_swapctl(): cmd = %d, arg = %p\n", SCARG(uap, cmd),
|
|
SCARG(uap, arg));
|
|
#endif
|
|
|
|
switch (SCARG(uap, cmd)) {
|
|
case IRIX_SC_ADD: /* Add a swap resource */
|
|
case IRIX_SC_SGIADD: /* Add a swap resource */
|
|
case IRIX_SC_REMOVE: {/* Remove a swap resource */
|
|
struct irix_xswapres isr;
|
|
size_t len = (SCARG(uap, cmd) == IRIX_SC_SGIADD) ?
|
|
sizeof(struct irix_xswapres) : sizeof(struct irix_swapres);
|
|
|
|
if ((error = copyin(SCARG(uap, arg), &isr, len)) != 0)
|
|
return error;
|
|
#ifdef DEBUG_IRIX
|
|
printf("irix_sys_swapctl(): sr_start=%d, sr_length=%d",
|
|
isr.sr_start, isr.sr_length);
|
|
if (SCARG(uap, cmd) == IRIX_SC_SGIADD)
|
|
printf(", sr_maxlength=%d, sr_vlength=%d",
|
|
isr.sr_maxlength, isr.sr_vlength);
|
|
printf("\n");
|
|
#endif
|
|
if (isr.sr_start != 0) {
|
|
printf("Warning: irix_sys_swapctl(): ");
|
|
printf("unsupported non null sr_start\n");
|
|
return EINVAL;
|
|
}
|
|
SCARG(&cup, cmd) =
|
|
(SCARG(uap, cmd) == IRIX_SC_REMOVE) ? SWAP_OFF : SWAP_ON;
|
|
SCARG(&cup, arg) = isr.sr_name;
|
|
SCARG(&cup, misc) =
|
|
(SCARG(uap, cmd) == IRIX_SC_SGIADD) ? isr.sr_pri : 0;
|
|
return sys_swapctl(l, &cup, retval);
|
|
break;
|
|
}
|
|
|
|
|
|
case IRIX_SC_GETNSWP: /* Get number of swap items */
|
|
SCARG(&cup, cmd) = SWAP_NSWAP;
|
|
SCARG(&cup, arg) = NULL;
|
|
SCARG(&cup, misc) = 0;
|
|
return sys_swapctl(l, &cup, retval);
|
|
break;
|
|
|
|
case IRIX_SC_LIST: { /* Get swap list */
|
|
struct irix_swaptable ist;
|
|
struct swapent *bse;
|
|
struct irix_swapent *ise, *uise;
|
|
int len, ilen, pathlen;
|
|
int i;
|
|
size_t blksz = dbtob(1); /* One swap block size in bytes */
|
|
int scale = (PAGE_SIZE / blksz);
|
|
|
|
if ((error = copyin(SCARG(uap, arg), &ist, sizeof(ist))) != 0)
|
|
return error;
|
|
|
|
uise = (struct irix_swapent *)((caddr_t)SCARG(uap, arg) +
|
|
sizeof(ist.swt_n));
|
|
|
|
len = sizeof(struct swapent) * ist.swt_n;
|
|
bse = (struct swapent *)malloc(len, M_TEMP, M_WAITOK);
|
|
|
|
ilen = sizeof(struct irix_swapent) * ist.swt_n;
|
|
ise = (struct irix_swapent *)malloc(ilen, M_TEMP, M_WAITOK);
|
|
|
|
if ((error = copyin(uise, ise, ilen)) != 0)
|
|
return error;
|
|
|
|
lockmgr(&swap_syscall_lock, LK_EXCLUSIVE, NULL);
|
|
uvm_swap_stats(SWAP_STATS, bse, ist.swt_n, retval);
|
|
lockmgr(&swap_syscall_lock, LK_RELEASE, NULL);
|
|
|
|
for (i = 0; i < ist.swt_n; i++) {
|
|
|
|
pathlen = MIN(strlen(bse[i].se_path), IRIX_PATH_MAX);
|
|
if (ise[i].ste_path != NULL &&
|
|
((error = copyout(&(bse[i].se_path),
|
|
ise[i].ste_path, pathlen)) != 0))
|
|
goto bad;
|
|
|
|
ise[i].ste_start = 0;
|
|
ise[i].ste_length = bse[i].se_nblks * blksz;
|
|
ise[i].ste_pages = bse[i].se_nblks / scale;
|
|
ise[i].ste_free = (bse[i].se_nblks - bse[i].se_inuse) /
|
|
scale;
|
|
|
|
ise[i].ste_flags = 0;
|
|
if (bse[i].se_flags & SWF_FAKE)
|
|
ise[i].ste_flags |= IRIX_ST_NOTREADY;
|
|
|
|
ise[i].ste_vpages = bse[i].se_inuse / scale;
|
|
ise[i].ste_maxpages = bse[i].se_nblks / scale;
|
|
ise[i].ste_lswap = 1; /* XXX */
|
|
ise[i].ste_pri = bse[i].se_priority;
|
|
|
|
}
|
|
|
|
error = copyout(ise, uise, ilen);
|
|
bad:
|
|
free(bse, M_TEMP);
|
|
free(ise, M_TEMP);
|
|
return error;
|
|
break;
|
|
}
|
|
|
|
case IRIX_SC_GETFREESWAP:
|
|
case IRIX_SC_GETSWAPVIRT: {
|
|
int entries;
|
|
struct swapent *sep;
|
|
int i, dontcare, sum = 0;
|
|
|
|
SCARG(&cup, cmd) = SWAP_NSWAP;
|
|
SCARG(&cup, arg) = NULL;
|
|
SCARG(&cup, misc) = 0;
|
|
if ((error = sys_swapctl(l, &cup,
|
|
(register_t *)(void *)&entries)) != 0)
|
|
return error;
|
|
|
|
sep = (struct swapent *)malloc(
|
|
sizeof(struct swapent) * entries, M_TEMP, M_WAITOK);
|
|
lockmgr(&swap_syscall_lock, LK_EXCLUSIVE, NULL);
|
|
uvm_swap_stats(SWAP_STATS, sep, entries,
|
|
(register_t *)(void *)&dontcare);
|
|
lockmgr(&swap_syscall_lock, LK_RELEASE, NULL);
|
|
|
|
if (SCARG(uap, cmd) == IRIX_SC_GETFREESWAP)
|
|
for (i = 0; i < entries; i++)
|
|
sum += (sep[i].se_nblks - sep[i].se_inuse);
|
|
|
|
if (SCARG(uap, cmd) == IRIX_SC_GETSWAPVIRT)
|
|
for (i = 0; i < entries; i++)
|
|
sum += sep[i].se_nblks;
|
|
|
|
/* dbtob(1) is the size in byte of one swap block */
|
|
sum = sum * IRIX_SWAP_BLKSZ / dbtob(1);
|
|
|
|
if ((error = copyout(&sum, SCARG(uap, arg), sizeof(sum))) != 0)
|
|
return error;
|
|
break;
|
|
}
|
|
default:
|
|
printf("irix_sys_swapctl(): unsupported command %d\n",
|
|
SCARG(uap, cmd));
|
|
return EINVAL;
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|