175 lines
3.2 KiB
C
175 lines
3.2 KiB
C
/*
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* (C)opyright 1993,1994,1995 by Darren Reed.
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*
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* Redistribution and use in source and binary forms are permitted
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* provided that this notice is preserved and due credit is given
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* to the original author and the contributors.
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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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#include "ipl.h"
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#if !defined(lint) && defined(LIBC_SCCS)
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static char sccsid[] = "@(#)mls_ipl.c 2.6 10/15/95 (C) 1993-1995 Darren Reed";
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static char rcsid[] = "$Id: mls_ipl.c,v 2.0.1.1 1997/01/09 15:14:44 darrenr Exp $";
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#endif
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#ifndef IPL_NAME
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#define IPL_NAME "/dev/ipl"
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#endif
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extern int iplattach(), iplopen(), iplclose(), iplioctl(), ipldetach();
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#ifdef IPFILTER_LOG
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extern int iplread();
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#else
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#define iplread nulldev
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#endif
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extern int nulldev(), iplidentify(), errno;
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static int unload(), ipl_attach();
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struct cdevsw ipldevsw =
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{
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iplopen, iplclose, iplread, nulldev,
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iplioctl, nulldev, nulldev, nulldev,
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0, nulldev,
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};
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struct dev_ops ipl_ops =
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{
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1,
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iplidentify,
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iplattach,
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iplopen,
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iplclose,
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iplread,
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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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iplioctl,
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NULL, /* reset */
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NULL /* mmap */
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};
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int ipl_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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IPL_VERSION,
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&ipl_ops,
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NULL,
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&ipldevsw,
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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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IPL_VERSION,
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#ifdef sun4c
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&ipl_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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&ipldevsw, /* 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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switch (fc)
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{
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case VDLOAD:
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while (ipl_major < nchrdev &&
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cdevsw[ipl_major].d_open != vd_unuseddev)
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ipl_major++;
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if (ipl_major == nchrdev)
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return ENODEV;
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vd.Drv_charmajor = ipl_major;
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vdp->vdd_vdtab = (struct vdlinkage *)&vd;
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return ipl_attach();
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case VDUNLOAD:
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return unload();
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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 int unload()
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{
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int err;
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err = ipldetach();
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if (!err)
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(void) vn_remove(IPL_NAME, UIO_SYSSPACE, FILE);
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return err;
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}
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static int ipl_attach()
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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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error = iplattach();
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if (error)
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return error;
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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 = ipl_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 error;
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}
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