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/* $OpenBSD: linux_resource.c,v 1.6 2012/09/05 17:13:37 deraadt Exp $ */
/*
* Copyright (c) 2000 Niklas Hallqvist
* All rights reserved.
*
* 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 AUTHOR ``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 AUTHOR 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.
*/
/*
* Linux "resource" syscall emulation
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mount.h>
#include <sys/proc.h>
#include <sys/resource.h>
#include <sys/resourcevar.h>
#include <sys/syscallargs.h>
#include <compat/linux/linux_types.h>
#include <compat/linux/linux_resource.h>
#include <compat/linux/linux_signal.h>
#include <compat/linux/linux_syscallargs.h>
/* linux_resource.c */
int linux_to_bsd_rlimit(u_int);
int linux_dogetrlimit(struct proc *, void *, register_t *, rlim_t);
static u_int linux_to_bsd_rlimit_map[] = {
RLIMIT_CPU,
RLIMIT_FSIZE,
RLIMIT_DATA,
RLIMIT_STACK,
RLIMIT_CORE,
RLIMIT_RSS,
RLIMIT_NPROC,
RLIMIT_NOFILE,
RLIMIT_MEMLOCK,
RLIM_NLIMITS /* LINUX_RLIMIT_AS not supported */
};
int
linux_to_bsd_rlimit(which)
u_int which;
{
if (which >= LINUX_RLIM_NLIMITS)
return (RLIM_NLIMITS);
return (linux_to_bsd_rlimit_map[which]);
}
struct compat_sys_setrlimit_args {
syscallarg(int) which;
syscallarg(struct olimit *) rlp;
};
struct compat_linux_rlimit {
int32_t rlim_cur; /* current (soft) limit */
int32_t rlim_max; /* maximum value for rlim_cur */
};
int compat_sys_setrlimit(struct proc *p, void *v, register_t *retval);
int
compat_sys_setrlimit(struct proc *p, void *v, register_t *retval)
{
struct compat_sys_setrlimit_args *uap = v;
struct compat_linux_rlimit olim;
struct rlimit lim;
int error;
error = copyin((caddr_t)SCARG(uap, rlp), (caddr_t)&olim,
sizeof (olim));
if (error)
return (error);
lim.rlim_cur = olim.rlim_cur;
lim.rlim_max = olim.rlim_max;
return (dosetrlimit(p, SCARG(uap, which), &lim));
}
int
linux_sys_setrlimit(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct linux_sys_setrlimit_args /* {
syscallarg(u_int) which;
syscallarg(struct linux_rlimit *) rlp;
} */ *uap = v;
SCARG(uap, which) = linux_to_bsd_rlimit(SCARG(uap, which));
if (SCARG(uap, which) == RLIM_NLIMITS)
return (EINVAL);
return (compat_sys_setrlimit(p, v, retval));
}
int
linux_dogetrlimit(p, v, retval, max)
struct proc *p;
void *v;
register_t *retval;
rlim_t max;
{
struct linux_sys_getrlimit_args /* {
syscallarg(u_int) which;
syscallarg(struct linux_rlimit *) rlp;
} */ *uap = v;
u_int which;
struct linux_rlimit rlim;
which = linux_to_bsd_rlimit(SCARG(uap, which));
if (which == RLIM_NLIMITS)
return (EINVAL);
rlim.rlim_cur = MIN(p->p_rlimit[which].rlim_cur, max);
rlim.rlim_max = MIN(p->p_rlimit[which].rlim_max, max);
return (copyout(&rlim, SCARG(uap, rlp), sizeof rlim));
}
int
linux_sys_getrlimit(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
return (linux_dogetrlimit(p, v, retval, LINUX_OLD_RLIM_INFINITY));
}
int
linux_sys_ugetrlimit(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
return (linux_dogetrlimit(p, v, retval, LINUX_RLIM_INFINITY));
}
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