/* $NetBSD: ml_ipl.c,v 1.1.1.1 1999/12/11 22:23:59 veego Exp $ */ /* * Copyright (C) 1993-1998 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. The author accepts no * responsibility and is not changed in any way. * * I hate legaleese, don't you ? */ /* * 29/12/94 Added code from Marc Huber to allow it to allocate * its own major char number! Way cool patch! */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #if defined(sun4c) || defined(sun4m) #include #endif #ifndef IPL_NAME #define IPL_NAME "/dev/ipl" #endif extern int iplattach(), iplopen(), iplclose(), iplioctl(), iplread(); extern int nulldev(), iplidentify(), errno; struct cdevsw ipldevsw = { iplopen, iplclose, iplread, nulldev, iplioctl, nulldev, nulldev, nulldev, 0, nulldev, }; struct dev_ops ipl_ops = { 1, iplidentify, iplattach, iplopen, iplclose, iplread, NULL, /* write */ NULL, /* strategy */ NULL, /* dump */ 0, /* psize */ iplioctl, NULL, /* reset */ NULL /* mmap */ }; int ipl_major = 0; #ifdef sun4m struct vdldrv vd = { VDMAGIC_PSEUDO, "ipl", &ipl_ops, NULL, &ipldevsw, 0, 0, NULL, NULL, NULL, 0, 1, }; #else /* sun4m */ struct vdldrv vd = { VDMAGIC_PSEUDO, /* magic */ "ipl", /* name */ #ifdef sun4c &ipl_ops, /* dev_ops */ #else NULL, /* struct mb_ctlr *mb_ctlr */ NULL, /* struct mb_driver *mb_driver */ NULL, /* struct mb_device *mb_device */ 0, /* num ctlrs */ 1, /* numdevs */ #endif /* sun4c */ NULL, /* bdevsw */ &ipldevsw, /* cdevsw */ 0, /* block major */ 0, /* char major */ }; #endif /* sun4m */ extern int vd_unuseddev(); extern struct cdevsw cdevsw[]; extern int nchrdev; xxxinit(fc, vdp, vdi, vds) u_int fc; struct vddrv *vdp; caddr_t vdi; struct vdstat *vds; { struct vdlinkage *v; int i; switch (fc) { case VDLOAD: while (ipl_major < nchrdev && cdevsw[ipl_major].d_open != vd_unuseddev) ipl_major++; if (ipl_major == nchrdev) return ENODEV; vd.Drv_charmajor = ipl_major; vdp->vdd_vdtab = (struct vdlinkage *)&vd; return ipl_attach(vdi); case VDUNLOAD: return unload(vdp, vdi); case VDSTAT: return 0; default: return EIO; } } static unload(vdp, vdi) struct vddrv *vdp; struct vdioctl_unload *vdi; { int i; (void) vn_remove(IPL_NAME, UIO_SYSSPACE, FILE); return ipldetach(); } static int ipl_attach(vdi) struct vdioctl_load *vdi; { struct vnode *vp; struct vattr vattr; int error = 0, fmode = S_IFCHR|0600; (void) vn_remove(IPL_NAME, UIO_SYSSPACE, FILE); vattr_null(&vattr); vattr.va_type = MFTOVT(fmode); vattr.va_mode = (fmode & 07777); vattr.va_rdev = ipl_major<<8; error = vn_create(IPL_NAME, UIO_SYSSPACE, &vattr, EXCL, 0, &vp); if (error == 0) VN_RELE(vp); return iplattach(0); }