NetBSD-5.0.2/sys/compat/svr4_32/svr4_32_resource.c
/* $NetBSD: svr4_32_resource.c,v 1.15.10.1 2009/04/01 00:25:22 snj Exp $ */
/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Christos Zoulas.
*
* 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: svr4_32_resource.c,v 1.15.10.1 2009/04/01 00:25:22 snj Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/proc.h>
#include <sys/file.h>
#include <sys/resource.h>
#include <sys/resourcevar.h>
#include <machine/vmparam.h>
#include <compat/svr4_32/svr4_32_types.h>
#include <compat/svr4_32/svr4_32_resource.h>
#include <compat/svr4_32/svr4_32_signal.h>
#include <compat/svr4_32/svr4_32_lwp.h>
#include <compat/svr4_32/svr4_32_ucontext.h>
#include <compat/svr4_32/svr4_32_syscallargs.h>
#include <compat/svr4_32/svr4_32_util.h>
static inline int svr4_to_native_rl(int);
static inline int
svr4_to_native_rl(int rl)
{
switch (rl) {
case SVR4_RLIMIT_CPU:
return RLIMIT_CPU;
case SVR4_RLIMIT_FSIZE:
return RLIMIT_FSIZE;
case SVR4_RLIMIT_DATA:
return RLIMIT_DATA;
case SVR4_RLIMIT_STACK:
return RLIMIT_STACK;
case SVR4_RLIMIT_CORE:
return RLIMIT_CORE;
case SVR4_RLIMIT_NOFILE:
return RLIMIT_NOFILE;
case SVR4_RLIMIT_VMEM:
return RLIMIT_AS;
default:
return -1;
}
}
/*
* Check if the resource limit fits within the BSD range and it is not
* one of the magic SVR4 limit values
*/
#define OKLIMIT(l) (((int32_t)(l)) >= 0 && ((int32_t)(l)) < 0x7fffffff && \
((svr4_rlim_t)(l)) != SVR4_RLIM_INFINITY && \
((svr4_rlim_t)(l)) != SVR4_RLIM_SAVED_CUR && \
((svr4_rlim_t)(l)) != SVR4_RLIM_SAVED_MAX)
#define OKLIMIT64(l) (((rlim_t)(l)) >= 0 && ((rlim_t)(l)) < RLIM_INFINITY && \
((svr4_rlim64_t)(l)) != SVR4_RLIM64_INFINITY && \
((svr4_rlim64_t)(l)) != SVR4_RLIM64_SAVED_CUR && \
((svr4_rlim64_t)(l)) != SVR4_RLIM64_SAVED_MAX)
int
svr4_32_sys_getrlimit(struct lwp *l, const struct svr4_32_sys_getrlimit_args *uap, register_t *retval)
{
struct proc *p = l->l_proc;
int rl = svr4_to_native_rl(SCARG(uap, which));
struct rlimit blim;
struct svr4_rlimit slim;
if (rl == -1)
return EINVAL;
blim = p->p_rlimit[rl];
/*
* Our infinity, is their maxfiles.
*/
if (rl == RLIMIT_NOFILE && blim.rlim_max == RLIM_INFINITY)
blim.rlim_max = maxfiles;
/*
* If the limit can be be represented, it is returned.
* Otherwise, if rlim_cur == rlim_max, return RLIM_SAVED_MAX
* else return RLIM_SAVED_CUR
*/
if (blim.rlim_max == RLIM_INFINITY)
slim.rlim_max = SVR4_RLIM_INFINITY;
else if (OKLIMIT(blim.rlim_max))
slim.rlim_max = (svr4_rlim_t) blim.rlim_max;
else
slim.rlim_max = SVR4_RLIM_SAVED_MAX;
if (blim.rlim_cur == RLIM_INFINITY)
slim.rlim_cur = SVR4_RLIM_INFINITY;
else if (OKLIMIT(blim.rlim_cur))
slim.rlim_cur = (svr4_rlim_t) blim.rlim_cur;
else if (blim.rlim_max == blim.rlim_cur)
slim.rlim_cur = SVR4_RLIM_SAVED_MAX;
else
slim.rlim_cur = SVR4_RLIM_SAVED_CUR;
switch (rl) {
case RLIMIT_DATA:
if (blim.rlim_cur > MAXDSIZ32)
blim.rlim_cur = MAXDSIZ32;
if (blim.rlim_max > MAXDSIZ32)
blim.rlim_max = MAXDSIZ32;
break;
case RLIMIT_STACK:
if (blim.rlim_cur > MAXSSIZ32)
blim.rlim_cur = MAXSSIZ32;
if (blim.rlim_max > MAXSSIZ32)
blim.rlim_max = MAXSSIZ32;
default:
break;
}
return copyout(&slim, SCARG_P32(uap, rlp), sizeof(slim));
}
int
svr4_32_sys_setrlimit(struct lwp *l, const struct svr4_32_sys_setrlimit_args *uap, register_t *retval)
{
struct proc *p = l->l_proc;
int rl = svr4_to_native_rl(SCARG(uap, which));
struct rlimit blim, *limp;
struct svr4_rlimit slim;
int error;
if (rl == -1)
return EINVAL;
limp = &p->p_rlimit[rl];
if ((error = copyin(SCARG_P32(uap, rlp), &slim,
sizeof(slim))) != 0)
return error;
/*
* if the limit is SVR4_RLIM_INFINITY, then we set it to our
* unlimited.
* We should also: If it is SVR4_RLIM_SAVED_MAX, we should set the
* new limit to the corresponding saved hard limit, and if
* it is equal to SVR4_RLIM_SAVED_CUR, we should set it to the
* corresponding saved soft limit.
*
*/
if (slim.rlim_max == SVR4_RLIM_INFINITY)
blim.rlim_max = RLIM_INFINITY;
else if (OKLIMIT(slim.rlim_max))
blim.rlim_max = (rlim_t) slim.rlim_max;
else if (slim.rlim_max == SVR4_RLIM_SAVED_MAX)
blim.rlim_max = limp->rlim_max;
else if (slim.rlim_max == SVR4_RLIM_SAVED_CUR)
blim.rlim_max = limp->rlim_cur;
if (slim.rlim_cur == SVR4_RLIM_INFINITY)
blim.rlim_cur = RLIM_INFINITY;
else if (OKLIMIT(slim.rlim_cur))
blim.rlim_cur = (rlim_t) slim.rlim_cur;
else if (slim.rlim_cur == SVR4_RLIM_SAVED_MAX)
blim.rlim_cur = limp->rlim_max;
else if (slim.rlim_cur == SVR4_RLIM_SAVED_CUR)
blim.rlim_cur = limp->rlim_cur;
return dosetrlimit(l, p, rl, &blim);
}
int
svr4_32_sys_getrlimit64(struct lwp *l, const struct svr4_32_sys_getrlimit64_args *uap, register_t *retval)
{
struct proc *p = l->l_proc;
int rl = svr4_to_native_rl(SCARG(uap, which));
struct rlimit blim;
struct svr4_rlimit64 slim;
if (rl == -1)
return EINVAL;
blim = p->p_rlimit[rl];
/*
* Our infinity, is their maxfiles.
*/
if (rl == RLIMIT_NOFILE && blim.rlim_max == RLIM_INFINITY)
blim.rlim_max = maxfiles;
/*
* If the limit can be be represented, it is returned.
* Otherwise, if rlim_cur == rlim_max, return SVR4_RLIM_SAVED_MAX
* else return SVR4_RLIM_SAVED_CUR
*/
if (blim.rlim_max == RLIM_INFINITY)
slim.rlim_max = SVR4_RLIM64_INFINITY;
else if (OKLIMIT64(blim.rlim_max))
slim.rlim_max = (svr4_rlim64_t) blim.rlim_max;
else
slim.rlim_max = SVR4_RLIM64_SAVED_MAX;
if (blim.rlim_cur == RLIM_INFINITY)
slim.rlim_cur = SVR4_RLIM64_INFINITY;
else if (OKLIMIT64(blim.rlim_cur))
slim.rlim_cur = (svr4_rlim64_t) blim.rlim_cur;
else if (blim.rlim_max == blim.rlim_cur)
slim.rlim_cur = SVR4_RLIM64_SAVED_MAX;
else
slim.rlim_cur = SVR4_RLIM64_SAVED_CUR;
return copyout(&slim, SCARG_P32(uap, rlp),
sizeof(slim));
}
int
svr4_32_sys_setrlimit64(struct lwp *l, const struct svr4_32_sys_setrlimit64_args *uap, register_t *retval)
{
struct proc *p = l->l_proc;
int rl = svr4_to_native_rl(SCARG(uap, which));
struct rlimit blim, *limp;
struct svr4_rlimit64 slim;
int error;
if (rl == -1)
return EINVAL;
limp = &p->p_rlimit[rl];
if ((error = copyin(SCARG_P32(uap, rlp),
&slim, sizeof(slim))) != 0)
return error;
/*
* if the limit is SVR4_RLIM64_INFINITY, then we set it to our
* unlimited.
* We should also: If it is SVR4_RLIM64_SAVED_MAX, we should set the
* new limit to the corresponding saved hard limit, and if
* it is equal to SVR4_RLIM64_SAVED_CUR, we should set it to the
* corresponding saved soft limit.
*
*/
if (slim.rlim_max == SVR4_RLIM64_INFINITY)
blim.rlim_max = RLIM_INFINITY;
else if (OKLIMIT64(slim.rlim_max))
blim.rlim_max = (rlim_t) slim.rlim_max;
else if (slim.rlim_max == SVR4_RLIM64_SAVED_MAX)
blim.rlim_max = limp->rlim_max;
else if (slim.rlim_max == SVR4_RLIM64_SAVED_CUR)
blim.rlim_max = limp->rlim_cur;
if (slim.rlim_cur == SVR4_RLIM64_INFINITY)
blim.rlim_cur = RLIM_INFINITY;
else if (OKLIMIT64(slim.rlim_cur))
blim.rlim_cur = (rlim_t) slim.rlim_cur;
else if (slim.rlim_cur == SVR4_RLIM64_SAVED_MAX)
blim.rlim_cur = limp->rlim_max;
else if (slim.rlim_cur == SVR4_RLIM64_SAVED_CUR)
blim.rlim_cur = limp->rlim_cur;
return dosetrlimit(l, p, rl, &blim);
}