diff options
Diffstat (limited to 'contrib/ipfilter/mln_ipl.c')
| -rw-r--r-- | contrib/ipfilter/mln_ipl.c | 295 |
1 files changed, 0 insertions, 295 deletions
diff --git a/contrib/ipfilter/mln_ipl.c b/contrib/ipfilter/mln_ipl.c deleted file mode 100644 index b170940..0000000 --- a/contrib/ipfilter/mln_ipl.c +++ /dev/null @@ -1,295 +0,0 @@ -/* - * Copyright (C) 1993-2001 by Darren Reed. - * - * See the IPFILTER.LICENCE file for details on licencing. - */ -/* - * 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> - -/* - * Post NetBSD 1.2 has the PFIL interface for packet filters. This turns - * on those hooks. We don't need any special mods with this! - */ -#if (defined(NetBSD) && (NetBSD > 199609) && (NetBSD <= 1991011)) || \ - (defined(NetBSD1_2) && NetBSD1_2 > 1) -# define NETBSD_PF -#endif - -#include <sys/systm.h> -#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> -#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> -#include <sys/lkm.h> -#include "ipl.h" -#include "ip_compat.h" -#include "ip_fil.h" - -#if !defined(__NetBSD_Version__) || __NetBSD_Version__ < 103050000 -#define vn_lock(v,f) VOP_LOCK(v) -#endif - -#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)); - -#if (NetBSD >= 199706) || (defined(OpenBSD) && (OpenBSD >= 200211)) -int if_ipl_lkmentry __P((struct lkm_table *, int, int)); -#else -#if defined(OpenBSD) -int if_ipl __P((struct lkm_table *, int, int)); -#else -int xxxinit __P((struct lkm_table *, int, int)); -#endif -#endif -static int ipl_unload __P((void)); -static int ipl_load __P((void)); -static int ipl_remove __P((void)); -static int iplaction __P((struct lkm_table *, int)); -static char *ipf_devfiles[] = { IPL_NAME, IPL_NAT, IPL_STATE, IPL_AUTH, - NULL }; - - -#if (defined(NetBSD1_0) && (NetBSD1_0 > 1)) || \ - (defined(NetBSD) && (NetBSD <= 1991011) && (NetBSD >= 199511)) -# if defined(__NetBSD__) && (__NetBSD_Version__ >= 106080000) -extern const struct cdevsw ipl_cdevsw; -# else -struct cdevsw ipldevsw = -{ - iplopen, /* open */ - iplclose, /* close */ - iplread, /* read */ - 0, /* write */ - iplioctl, /* ioctl */ - 0, /* stop */ - 0, /* tty */ - 0, /* select */ - 0, /* mmap */ - NULL /* strategy */ -}; -# endif -#else -struct cdevsw ipldevsw = -{ - iplopen, /* open */ - iplclose, /* close */ - iplread, /* read */ - (void *)nullop, /* write */ - iplioctl, /* ioctl */ - (void *)nullop, /* stop */ -#ifndef OpenBSD - (void *)nullop, /* reset */ -#endif - (void *)NULL, /* tty */ - (void *)nullop, /* select */ - (void *)nullop, /* mmap */ - NULL /* strategy */ -}; -#endif -int ipl_major = 0; - -#if defined(__NetBSD__) && (__NetBSD_Version__ >= 106080000) -MOD_DEV(IPL_VERSION, "ipl", NULL, -1, &ipl_cdevsw, -1); -#else -MOD_DEV(IPL_VERSION, LM_DT_CHAR, -1, &ipldevsw); -#endif - -extern int vd_unuseddev __P((void)); -extern struct cdevsw cdevsw[]; -extern int nchrdev; - - -#if (NetBSD >= 199706) || (defined(OpenBSD) && (OpenBSD >= 200211)) -int if_ipl_lkmentry(lkmtp, cmd, ver) -#else -#if defined(OpenBSD) -int if_ipl(lkmtp, cmd, ver) -#else -int xxxinit(lkmtp, cmd, ver) -#endif -#endif -struct lkm_table *lkmtp; -int cmd, ver; -{ - DISPATCH(lkmtp, cmd, ver, iplaction, iplaction, iplaction); -} - -#ifdef OpenBSD -int lkmexists __P((struct lkm_table *)); /* defined in /sys/kern/kern_lkm.c */ -#endif - -static int iplaction(lkmtp, cmd) -struct lkm_table *lkmtp; -int cmd; -{ - struct lkm_dev *args = lkmtp->private.lkm_dev; - int err = 0; -#if !defined(__NetBSD__) || (__NetBSD_Version__ < 106080000) - int i; -#endif - - switch (cmd) - { - case LKM_E_LOAD : - if (lkmexists(lkmtp)) - return EEXIST; - -#if !defined(__NetBSD__) || (__NetBSD_Version__ < 106080000) - for (i = 0; i < nchrdev; i++) - if (cdevsw[i].d_open == (dev_type_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[] */ -#else - err = devsw_attach(args->lkm_devname, - args->lkm_bdev, &args->lkm_bdevmaj, - args->lkm_cdev, &args->lkm_cdevmaj); - if (err != 0) - return (err); - ipl_major = args->lkm_cdevmaj; -#endif - printf("IP Filter: loaded into slot %d\n", ipl_major); - return ipl_load(); - case LKM_E_UNLOAD : -#if defined(__NetBSD__) && (__NetBSD_Version__ >= 106080000) - devsw_detach(args->lkm_bdev, args->lkm_cdev); - args->lkm_bdevmaj = -1; - args->lkm_cdevmaj = -1; -#endif - err = ipl_unload(); - if (!err) - printf("IP Filter: unloaded from slot %d\n", - ipl_major); - break; - case LKM_E_STAT : - break; - default: - err = EIO; - break; - } - return err; -} - - -static int ipl_remove() -{ - char *name; - struct nameidata nd; - int error, i; - - for (i = 0; (name = ipf_devfiles[i]); i++) { - NDINIT(&nd, DELETE, LOCKPARENT, UIO_SYSSPACE, name, curproc); - if ((error = namei(&nd))) - return (error); - VOP_LEASE(nd.ni_vp, curproc, curproc->p_ucred, LEASE_WRITE); -#ifdef OpenBSD - VOP_LOCK(nd.ni_vp, LK_EXCLUSIVE | LK_RETRY, curproc); -#else -# if !defined(__NetBSD_Version__) || (__NetBSD_Version__ < 106000000) - vn_lock(nd.ni_vp, LK_EXCLUSIVE | LK_RETRY); -# endif -#endif - 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; - - /* - * Unloading - remove the filter rule check from the IP - * input/output stream. - */ -#if defined(__NetBSD__) - error = ipl_disable(); -#else - error = ipldetach(); -#endif - - if (!error) - error = ipl_remove(); - return error; -} - - -static int ipl_load() -{ - struct nameidata nd; - struct vattr vattr; - int error = 0, fmode = S_IFCHR|0600, i; - char *name; - - /* - * XXX Remove existing device nodes prior to creating new ones - * XXX using the assigned LKM device slot's major number. In a - * XXX perfect world we could use the ones specified by cdevsw[]. - */ - (void)ipl_remove(); - - error = ipl_enable(); - if (error) - return error; - - for (i = 0; (name = ipf_devfiles[i]); i++) { - NDINIT(&nd, CREATE, LOCKPARENT, UIO_SYSSPACE, 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) | i; - 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 error; -} |
