replaced by FreeBSD specific version
This commit is contained in:
Peter Wemm
parent
1ee25934a9
commit
cf3fd327f4
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=34747
@ -1,378 +0,0 @@
|
||||
/*
|
||||
* (C)opyright 1993,1994,1995 by Darren Reed.
|
||||
*
|
||||
* Redistribution and use in source and binary forms are permitted
|
||||
* provided that this notice is preserved and due credit is given
|
||||
* to the original author and the contributors.
|
||||
*/
|
||||
/*
|
||||
* 29/12/94 Added code from Marc Huber <huber@fzi.de> to allow it to allocate
|
||||
* its own major char number! Way cool patch!
|
||||
*/
|
||||
|
||||
|
||||
#include <sys/param.h>
|
||||
|
||||
#if defined(__FreeBSD__) && (__FreeBSD__ > 1)
|
||||
# ifdef IPFILTER_LKM
|
||||
# include <osreldate.h>
|
||||
# define ACTUALLY_LKM_NOT_KERNEL
|
||||
# else
|
||||
# include <sys/osreldate.h>
|
||||
# endif
|
||||
#endif
|
||||
#include <sys/systm.h>
|
||||
#if defined(__FreeBSD_version) && (__FreeBSD_version >= 220000)
|
||||
# include "opt_devfs.h"
|
||||
# include <sys/conf.h>
|
||||
# include <sys/kernel.h>
|
||||
# ifdef DEVFS
|
||||
# include <sys/devfsext.h>
|
||||
# endif /*DEVFS*/
|
||||
#endif
|
||||
#include <sys/conf.h>
|
||||
#include <sys/file.h>
|
||||
#include <sys/stat.h>
|
||||
#include <sys/proc.h>
|
||||
#include <sys/uio.h>
|
||||
#include <sys/kernel.h>
|
||||
#include <sys/vnode.h>
|
||||
#include <sys/namei.h>
|
||||
#include <sys/malloc.h>
|
||||
#include <sys/mount.h>
|
||||
#include <sys/exec.h>
|
||||
#include <sys/mbuf.h>
|
||||
#if BSD >= 199506
|
||||
# include <sys/sysctl.h>
|
||||
#endif
|
||||
#if (__FreeBSD_version >= 199511)
|
||||
#include <net/if.h>
|
||||
#include <netinet/in_systm.h>
|
||||
#include <netinet/in.h>
|
||||
#include <netinet/ip.h>
|
||||
#include <net/route.h>
|
||||
#include <netinet/ip_var.h>
|
||||
#include <netinet/tcp.h>
|
||||
#include <netinet/tcpip.h>
|
||||
#endif
|
||||
#if (__FreeBSD__ > 1)
|
||||
# include <sys/sysent.h>
|
||||
#endif
|
||||
#include <sys/lkm.h>
|
||||
#include "netinet/ipl.h"
|
||||
#include "netinet/ip_compat.h"
|
||||
#include "netinet/ip_fil.h"
|
||||
|
||||
#ifndef IPL_NAME
|
||||
#define IPL_NAME "/dev/ipl"
|
||||
#endif
|
||||
#define IPL_NAT "/dev/ipnat"
|
||||
#define IPL_STATE "/dev/ipstate"
|
||||
|
||||
#if !defined(VOP_LEASE) && defined(LEASE_CHECK)
|
||||
#define VOP_LEASE LEASE_CHECK
|
||||
#endif
|
||||
|
||||
#ifndef MIN
|
||||
#define MIN(a,b) (((a)<(b))?(a):(b))
|
||||
#endif
|
||||
|
||||
extern int lkmenodev __P((void));
|
||||
|
||||
|
||||
static int ipl_unload __P((void));
|
||||
static int ipl_load __P((void));
|
||||
static int ipl_remove __P((void));
|
||||
int xxxinit __P((struct lkm_table *, int, int));
|
||||
|
||||
|
||||
struct cdevsw ipldevsw =
|
||||
{
|
||||
iplopen, /* open */
|
||||
iplclose, /* close */
|
||||
iplread, /* read */
|
||||
(void *)nullop, /* write */
|
||||
iplioctl, /* ioctl */
|
||||
(void *)nullop, /* stop */
|
||||
(void *)nullop, /* reset */
|
||||
(void *)NULL, /* tty */
|
||||
(void *)nullop, /* select */
|
||||
(void *)nullop, /* mmap */
|
||||
NULL /* strategy */
|
||||
};
|
||||
|
||||
#ifdef SYSCTL_INT
|
||||
SYSCTL_NODE(_net_inet, OID_AUTO, ipf, CTLFLAG_RW, 0, "IPF");
|
||||
SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_flags, CTLFLAG_RW, &fr_flags, 0, "");
|
||||
SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_pass, CTLFLAG_RW, &fr_pass, 0, "");
|
||||
SYSCTL_INT(_net_inet_ipf, OID_AUTO, fr_active, CTLFLAG_RD, &fr_active, 0, "");
|
||||
SYSCTL_INT(_net_inet_ipf, OID_AUTO, ipl_unreach, CTLFLAG_RW,
|
||||
&ipl_unreach, 0, "");
|
||||
SYSCTL_INT(_net_inet_ipf, OID_AUTO, ipl_inited, CTLFLAG_RD,
|
||||
&ipl_inited, 0, "");
|
||||
#endif
|
||||
|
||||
#if !defined(__FreeBSD_version) || (__FreeBSD_version < 220000)
|
||||
int ipl_major = 0;
|
||||
|
||||
MOD_DEV(IPL_VERSION, LM_DT_CHAR, -1, &ipldevsw);
|
||||
|
||||
extern struct cdevsw cdevsw[];
|
||||
extern int vd_unuseddev __P((void));
|
||||
extern int nchrdev;
|
||||
#else
|
||||
int ipl_major = CDEV_MAJOR;
|
||||
|
||||
static struct cdevsw ipl_cdevsw = {
|
||||
iplopen, iplclose, iplread, nowrite, /* 79 */
|
||||
iplioctl, nostop, noreset, nodevtotty,
|
||||
noselect, nommap, nostrategy, "ipl",
|
||||
NULL, -1
|
||||
};
|
||||
#endif
|
||||
|
||||
|
||||
static int iplaction __P((struct lkm_table *, int));
|
||||
|
||||
|
||||
static int iplaction(lkmtp, cmd)
|
||||
struct lkm_table *lkmtp;
|
||||
int cmd;
|
||||
{
|
||||
int i = ipl_major;
|
||||
struct lkm_dev *args = lkmtp->private.lkm_dev;
|
||||
int err = 0;
|
||||
|
||||
switch (cmd)
|
||||
{
|
||||
case LKM_E_LOAD :
|
||||
if (lkmexists(lkmtp))
|
||||
return EEXIST;
|
||||
|
||||
#if !defined(__FreeBSD_version) || (__FreeBSD_version < 220000)
|
||||
for (i = 0; i < nchrdev; i++)
|
||||
if (cdevsw[i].d_open == lkmenodev ||
|
||||
cdevsw[i].d_open == iplopen)
|
||||
break;
|
||||
if (i == nchrdev) {
|
||||
printf("IP Filter: No free cdevsw slots\n");
|
||||
return ENODEV;
|
||||
}
|
||||
|
||||
ipl_major = i;
|
||||
args->lkm_offset = i; /* slot in cdevsw[] */
|
||||
#endif
|
||||
printf("IP Filter: loaded into slot %d\n", ipl_major);
|
||||
return ipl_load();
|
||||
break;
|
||||
case LKM_E_UNLOAD :
|
||||
printf("IP Filter: unloaded from slot %d\n", ipl_major);
|
||||
return ipl_unload();
|
||||
case LKM_E_STAT :
|
||||
break;
|
||||
default:
|
||||
err = EIO;
|
||||
break;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
static int ipl_remove __P((void))
|
||||
{
|
||||
struct nameidata nd;
|
||||
int error;
|
||||
|
||||
NDINIT(&nd, DELETE, LOCKPARENT, UIO_SYSSPACE, IPL_NAME, curproc);
|
||||
if ((error = namei(&nd)))
|
||||
return (error);
|
||||
VOP_LEASE(nd.ni_vp, curproc, curproc->p_ucred, LEASE_WRITE);
|
||||
VOP_LOCK(nd.ni_vp);
|
||||
VOP_LEASE(nd.ni_dvp, curproc, curproc->p_ucred, LEASE_WRITE);
|
||||
(void) VOP_REMOVE(nd.ni_dvp, nd.ni_vp, &nd.ni_cnd);
|
||||
|
||||
NDINIT(&nd, DELETE, LOCKPARENT, UIO_SYSSPACE, IPL_NAT, curproc);
|
||||
if ((error = namei(&nd)))
|
||||
return (error);
|
||||
VOP_LEASE(nd.ni_vp, curproc, curproc->p_ucred, LEASE_WRITE);
|
||||
VOP_LOCK(nd.ni_vp);
|
||||
VOP_LEASE(nd.ni_dvp, curproc, curproc->p_ucred, LEASE_WRITE);
|
||||
(void) VOP_REMOVE(nd.ni_dvp, nd.ni_vp, &nd.ni_cnd);
|
||||
|
||||
NDINIT(&nd, DELETE, LOCKPARENT, UIO_SYSSPACE, IPL_STATE, curproc);
|
||||
if ((error = namei(&nd)))
|
||||
return (error);
|
||||
VOP_LEASE(nd.ni_vp, curproc, curproc->p_ucred, LEASE_WRITE);
|
||||
VOP_LOCK(nd.ni_vp);
|
||||
VOP_LEASE(nd.ni_dvp, curproc, curproc->p_ucred, LEASE_WRITE);
|
||||
(void) VOP_REMOVE(nd.ni_dvp, nd.ni_vp, &nd.ni_cnd);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
static int ipl_unload()
|
||||
{
|
||||
int error = 0;
|
||||
|
||||
error = ipldetach();
|
||||
if (!error)
|
||||
error = ipl_remove();
|
||||
return error;
|
||||
}
|
||||
|
||||
|
||||
static int ipl_load()
|
||||
{
|
||||
struct nameidata nd;
|
||||
struct vattr vattr;
|
||||
int error = 0, fmode = S_IFCHR|0600;
|
||||
|
||||
error = iplattach();
|
||||
if (error)
|
||||
return error;
|
||||
(void) ipl_remove();
|
||||
|
||||
NDINIT(&nd, CREATE, LOCKPARENT, UIO_SYSSPACE, IPL_NAME, curproc);
|
||||
if (error = namei(&nd))
|
||||
return error;
|
||||
if (nd.ni_vp != NULL) {
|
||||
VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
|
||||
if (nd.ni_dvp == nd.ni_vp)
|
||||
vrele(nd.ni_dvp);
|
||||
else
|
||||
vput(nd.ni_dvp);
|
||||
vrele(nd.ni_vp);
|
||||
return (EEXIST);
|
||||
}
|
||||
VATTR_NULL(&vattr);
|
||||
vattr.va_type = VCHR;
|
||||
vattr.va_mode = (fmode & 07777);
|
||||
vattr.va_rdev = ipl_major<<8;
|
||||
VOP_LEASE(nd.ni_dvp, curproc, curproc->p_ucred, LEASE_WRITE);
|
||||
error = VOP_MKNOD(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &vattr);
|
||||
if (error)
|
||||
return error;
|
||||
|
||||
NDINIT(&nd, CREATE, LOCKPARENT, UIO_SYSSPACE, IPL_NAT, curproc);
|
||||
if (error = namei(&nd))
|
||||
return error;
|
||||
if (nd.ni_vp != NULL) {
|
||||
VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
|
||||
if (nd.ni_dvp == nd.ni_vp)
|
||||
vrele(nd.ni_dvp);
|
||||
else
|
||||
vput(nd.ni_dvp);
|
||||
vrele(nd.ni_vp);
|
||||
return (EEXIST);
|
||||
}
|
||||
VATTR_NULL(&vattr);
|
||||
vattr.va_type = VCHR;
|
||||
vattr.va_mode = (fmode & 07777);
|
||||
vattr.va_rdev = (ipl_major<<8)|1;
|
||||
VOP_LEASE(nd.ni_dvp, curproc, curproc->p_ucred, LEASE_WRITE);
|
||||
error = VOP_MKNOD(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &vattr);
|
||||
if (error)
|
||||
return error;
|
||||
|
||||
NDINIT(&nd, CREATE, LOCKPARENT, UIO_SYSSPACE, IPL_STATE, curproc);
|
||||
if (error = namei(&nd))
|
||||
return error;
|
||||
if (nd.ni_vp != NULL) {
|
||||
VOP_ABORTOP(nd.ni_dvp, &nd.ni_cnd);
|
||||
if (nd.ni_dvp == nd.ni_vp)
|
||||
vrele(nd.ni_dvp);
|
||||
else
|
||||
vput(nd.ni_dvp);
|
||||
vrele(nd.ni_vp);
|
||||
return (EEXIST);
|
||||
}
|
||||
VATTR_NULL(&vattr);
|
||||
vattr.va_type = VCHR;
|
||||
vattr.va_mode = (fmode & 07777);
|
||||
vattr.va_rdev = (ipl_major<<8)|2;
|
||||
VOP_LEASE(nd.ni_dvp, curproc, curproc->p_ucred, LEASE_WRITE);
|
||||
error = VOP_MKNOD(nd.ni_dvp, &nd.ni_vp, &nd.ni_cnd, &vattr);
|
||||
if (error)
|
||||
return error;
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
#if defined(__FreeBSD_version) && (__FreeBSD_version < 220000)
|
||||
/*
|
||||
* strlen isn't present in 2.1.* kernels.
|
||||
*/
|
||||
size_t strlen(string)
|
||||
char *string;
|
||||
{
|
||||
register char *s;
|
||||
|
||||
for (s = string; *s; s++)
|
||||
;
|
||||
return (size_t)(s - string);
|
||||
}
|
||||
|
||||
|
||||
int xxxinit(lkmtp, cmd, ver)
|
||||
struct lkm_table *lkmtp;
|
||||
int cmd, ver;
|
||||
{
|
||||
DISPATCH(lkmtp, cmd, ver, iplaction, iplaction, iplaction);
|
||||
}
|
||||
#else
|
||||
# ifdef IPFILTER_LKM
|
||||
# include <sys/exec.h>
|
||||
|
||||
MOD_DECL(if_ipl);
|
||||
|
||||
static struct lkm_dev _module = {
|
||||
LM_DEV,
|
||||
LKM_VERSION,
|
||||
IPL_VERSION,
|
||||
CDEV_MAJOR,
|
||||
LM_DT_CHAR,
|
||||
(void *)&ipl_cdevsw
|
||||
};
|
||||
|
||||
int if_ipl(lkmtp, cmd, ver)
|
||||
struct lkm_table *lkmtp;
|
||||
int cmd, ver;
|
||||
{
|
||||
DISPATCH(lkmtp, cmd, ver, iplaction, iplaction, iplaction);
|
||||
}
|
||||
# else
|
||||
|
||||
#ifdef DEVFS
|
||||
static void *ipf_devfs_token[3];
|
||||
#endif
|
||||
static ipl_devsw_installed = 0;
|
||||
|
||||
static void ipl_drvinit __P((void *unused))
|
||||
{
|
||||
dev_t dev;
|
||||
#ifdef DEVFS
|
||||
void **tp = ipf_devfs_token;
|
||||
#endif
|
||||
|
||||
if (!ipl_devsw_installed ) {
|
||||
dev = makedev(CDEV_MAJOR, 0);
|
||||
cdevsw_add(&dev, &ipl_cdevsw, NULL);
|
||||
ipl_devsw_installed = 1;
|
||||
|
||||
#ifdef DEVFS
|
||||
tp[IPL_LOGIPF] = devfs_add_devswf(&ipl_cdevsw, IPL_LOGIPF,
|
||||
DV_CHR, 0, 0, 0600,
|
||||
"ipf", IPL_LOGIPF);
|
||||
tp[IPL_LOGNAT] = devfs_add_devswf(&ipl_cdevsw, IPL_LOGNAT,
|
||||
DV_CHR, 0, 0, 0600,
|
||||
"ipnat", IPL_LOGNAT);
|
||||
tp[IPL_LOGSTATE] = devfs_add_devswf(&ipl_cdevsw, IPL_LOGSTATE,
|
||||
DV_CHR, 0, 0, 0600,
|
||||
"ipstate", IPL_LOGSTATE);
|
||||
#endif
|
||||
}
|
||||
}
|
||||
|
||||
SYSINIT(ipldev,SI_SUB_DRIVERS,SI_ORDER_MIDDLE+CDEV_MAJOR,ipl_drvinit,NULL)
|
||||
# endif /* IPFILTER_LKM */
|
||||
#endif /* _FreeBSD_version */
|
||||
Loading…
Reference in New Issue
Block a user