bfc88dcbf7
Approved by: glebius (mentor) BSD Licensed by: Darren Reed <darrenr@reed.wattle.id.au> (author)
165 lines
2.8 KiB
C
165 lines
2.8 KiB
C
/* $FreeBSD$ */
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/*
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* Copyright (C) 2012 by Darren Reed.
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*
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* See the IPFILTER.LICENCE file for details on licencing.
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*/
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/*
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* 29/12/94 Added code from Marc Huber <huber@fzi.de> to allow it to allocate
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* its own major char number! Way cool patch!
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*/
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <sys/file.h>
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#include <sys/conf.h>
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#include <sys/syslog.h>
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#include <sys/buf.h>
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#include <sys/param.h>
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#include <sys/errno.h>
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#include <sys/uio.h>
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#include <sys/vnode.h>
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#include <sundev/mbvar.h>
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#include <sun/autoconf.h>
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#include <sun/vddrv.h>
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#if defined(sun4c) || defined(sun4m)
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#include <sun/openprom.h>
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#endif
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#ifndef IPL_NAME
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#define IPL_NAME "/dev/ipf"
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#endif
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extern int ipfattach(), ipfopen(), ipfclose(), ipfioctl(), ipfread();
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extern int nulldev(), ipfidentify(), errno;
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struct cdevsw ipfdevsw =
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{
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ipfopen, ipfclose, ipfread, nulldev,
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ipfioctl, nulldev, nulldev, nulldev,
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0, nulldev,
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};
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struct dev_ops ipf_ops =
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{
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1,
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ipfidentify,
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ipfattach,
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ipfopen,
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ipfclose,
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ipfread,
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NULL, /* write */
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NULL, /* strategy */
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NULL, /* dump */
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0, /* psize */
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ipfioctl,
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NULL, /* reset */
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NULL /* mmap */
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};
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int ipf_major = 0;
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#ifdef sun4m
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struct vdldrv vd =
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{
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VDMAGIC_PSEUDO,
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"ipf",
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&ipf_ops,
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NULL,
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&ipfdevsw,
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0,
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0,
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NULL,
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NULL,
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NULL,
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0,
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1,
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};
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#else /* sun4m */
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struct vdldrv vd =
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{
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VDMAGIC_PSEUDO, /* magic */
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"ipf", /* name */
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#ifdef sun4c
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&ipf_ops, /* dev_ops */
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#else
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NULL, /* struct mb_ctlr *mb_ctlr */
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NULL, /* struct mb_driver *mb_driver */
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NULL, /* struct mb_device *mb_device */
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0, /* num ctlrs */
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1, /* numdevs */
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#endif /* sun4c */
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NULL, /* bdevsw */
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&ipfdevsw, /* cdevsw */
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0, /* block major */
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0, /* char major */
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};
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#endif /* sun4m */
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extern int vd_unuseddev();
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extern struct cdevsw cdevsw[];
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extern int nchrdev;
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xxxinit(fc, vdp, vdi, vds)
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u_int fc;
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struct vddrv *vdp;
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caddr_t vdi;
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struct vdstat *vds;
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{
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struct vdlinkage *v;
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int i;
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switch (fc)
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{
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case VDLOAD:
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while (ipf_major < nchrdev &&
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cdevsw[ipf_major].d_open != vd_unuseddev)
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ipf_major++;
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if (ipf_major == nchrdev)
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return ENODEV;
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vd.Drv_charmajor = ipf_major;
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vdp->vdd_vdtab = (struct vdlinkage *)&vd;
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return ipf_attach(vdi);
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case VDUNLOAD:
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return unload(vdp, vdi);
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case VDSTAT:
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return 0;
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default:
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return EIO;
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}
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}
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static unload(vdp, vdi)
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struct vddrv *vdp;
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struct vdioctl_unload *vdi;
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{
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int i;
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(void) vn_remove(IPL_NAME, UIO_SYSSPACE, FILE);
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return ipfdetach();
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}
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static int ipf_attach(vdi)
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struct vdioctl_load *vdi;
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{
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struct vnode *vp;
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struct vattr vattr;
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int error = 0, fmode = S_IFCHR|0600;
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(void) vn_remove(IPL_NAME, UIO_SYSSPACE, FILE);
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vattr_null(&vattr);
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vattr.va_type = MFTOVT(fmode);
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vattr.va_mode = (fmode & 07777);
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vattr.va_rdev = ipf_major<<8;
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error = vn_create(IPL_NAME, UIO_SYSSPACE, &vattr, EXCL, 0, &vp);
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if (error == 0)
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VN_RELE(vp);
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return ipfattach(0);
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}
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