896 lines
20 KiB
C
896 lines
20 KiB
C
/* $NetBSD: kern_subr.c,v 1.22 1997/02/24 12:20:47 leo Exp $ */
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/*
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* Copyright (c) 1997 Jason R. Thorpe. All rights reserved.
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* Copyright (c) 1982, 1986, 1991, 1993
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* The Regents of the University of California. All rights reserved.
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* (c) UNIX System Laboratories, Inc.
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* All or some portions of this file are derived from material licensed
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* to the University of California by American Telephone and Telegraph
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* Co. or Unix System Laboratories, Inc. and are reproduced herein with
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* the permission of UNIX System Laboratories, Inc.
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*
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This software was developed by the Computer Systems Engineering group
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* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
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* contributed to Berkeley.
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*
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* All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Lawrence Berkeley Laboratory.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)kern_subr.c 8.3 (Berkeley) 1/21/94
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/proc.h>
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#include <sys/malloc.h>
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#include <sys/mount.h>
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#include <sys/device.h>
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#include <sys/reboot.h>
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#include <sys/conf.h>
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#include <sys/disklabel.h>
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#include <sys/queue.h>
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#include <dev/cons.h>
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#include <net/if.h>
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/* XXX these should eventually move to subr_autoconf.c */
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static int findblkmajor __P((const char *, struct devnametobdevmaj *));
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static const char *findblkname __P((int, struct devnametobdevmaj *));
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static struct device *getdisk __P((char *, int, int,
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struct devnametobdevmaj *, dev_t *));
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static struct device *parsedisk __P((char *, int, int,
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struct devnametobdevmaj *, dev_t *));
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static int getstr __P((char *, int));
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int
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uiomove(buf, n, uio)
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register void *buf;
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register int n;
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register struct uio *uio;
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{
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register struct iovec *iov;
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u_int cnt;
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int error = 0;
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char *cp = buf;
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#ifdef DIAGNOSTIC
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if (uio->uio_rw != UIO_READ && uio->uio_rw != UIO_WRITE)
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panic("uiomove: mode");
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if (uio->uio_segflg == UIO_USERSPACE && uio->uio_procp != curproc)
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panic("uiomove proc");
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#endif
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while (n > 0 && uio->uio_resid) {
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iov = uio->uio_iov;
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cnt = iov->iov_len;
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if (cnt == 0) {
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uio->uio_iov++;
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uio->uio_iovcnt--;
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continue;
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}
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if (cnt > n)
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cnt = n;
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switch (uio->uio_segflg) {
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case UIO_USERSPACE:
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if (uio->uio_rw == UIO_READ)
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error = copyout(cp, iov->iov_base, cnt);
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else
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error = copyin(iov->iov_base, cp, cnt);
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if (error)
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return (error);
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break;
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case UIO_SYSSPACE:
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if (uio->uio_rw == UIO_READ)
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bcopy(cp, iov->iov_base, cnt);
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else
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bcopy(iov->iov_base, cp, cnt);
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break;
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}
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iov->iov_base += cnt;
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iov->iov_len -= cnt;
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uio->uio_resid -= cnt;
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uio->uio_offset += cnt;
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cp += cnt;
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n -= cnt;
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}
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return (error);
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}
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/*
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* Give next character to user as result of read.
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*/
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int
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ureadc(c, uio)
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register int c;
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register struct uio *uio;
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{
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register struct iovec *iov;
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if (uio->uio_resid <= 0)
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panic("ureadc: non-positive resid");
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again:
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if (uio->uio_iovcnt <= 0)
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panic("ureadc: non-positive iovcnt");
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iov = uio->uio_iov;
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if (iov->iov_len <= 0) {
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uio->uio_iovcnt--;
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uio->uio_iov++;
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goto again;
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}
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switch (uio->uio_segflg) {
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case UIO_USERSPACE:
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if (subyte(iov->iov_base, c) < 0)
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return (EFAULT);
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break;
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case UIO_SYSSPACE:
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*iov->iov_base = c;
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break;
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}
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iov->iov_base++;
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iov->iov_len--;
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uio->uio_resid--;
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uio->uio_offset++;
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return (0);
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}
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/*
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* General routine to allocate a hash table.
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*/
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void *
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hashinit(elements, type, hashmask)
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int elements, type;
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u_long *hashmask;
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{
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long hashsize;
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LIST_HEAD(generic, generic) *hashtbl;
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int i;
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if (elements <= 0)
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panic("hashinit: bad cnt");
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for (hashsize = 1; hashsize <= elements; hashsize <<= 1)
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continue;
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hashsize >>= 1;
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hashtbl = malloc((u_long)hashsize * sizeof(*hashtbl), type, M_WAITOK);
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for (i = 0; i < hashsize; i++)
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LIST_INIT(&hashtbl[i]);
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*hashmask = hashsize - 1;
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return (hashtbl);
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}
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/*
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* "Shutdown hook" types, functions, and variables.
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*/
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struct shutdownhook_desc {
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LIST_ENTRY(shutdownhook_desc) sfd_list;
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void (*sfd_fn) __P((void *));
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void *sfd_arg;
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};
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LIST_HEAD(, shutdownhook_desc) shutdownhook_list;
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void *
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shutdownhook_establish(fn, arg)
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void (*fn) __P((void *));
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void *arg;
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{
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struct shutdownhook_desc *ndp;
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ndp = (struct shutdownhook_desc *)
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malloc(sizeof (*ndp), M_DEVBUF, M_NOWAIT);
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if (ndp == NULL)
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return NULL;
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ndp->sfd_fn = fn;
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ndp->sfd_arg = arg;
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LIST_INSERT_HEAD(&shutdownhook_list, ndp, sfd_list);
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return (ndp);
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}
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void
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shutdownhook_disestablish(vhook)
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void *vhook;
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{
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#ifdef DIAGNOSTIC
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struct shutdownhook_desc *dp;
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for (dp = shutdownhook_list.lh_first; dp != NULL;
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dp = dp->sfd_list.le_next)
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if (dp == vhook)
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break;
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if (dp == NULL)
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panic("shutdownhook_disestablish: hook not established");
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#endif
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LIST_REMOVE((struct shutdownhook_desc *)vhook, sfd_list);
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free(vhook, M_DEVBUF);
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}
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/*
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* Run shutdown hooks. Should be invoked immediately before the
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* system is halted or rebooted, i.e. after file systems unmounted,
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* after crash dump done, etc.
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*
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* Each shutdown hook is removed from the list before it's run, so that
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* it won't be run again.
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*/
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void
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doshutdownhooks()
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{
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struct shutdownhook_desc *dp;
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while ((dp = shutdownhook_list.lh_first) != NULL) {
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LIST_REMOVE(dp, sfd_list);
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(*dp->sfd_fn)(dp->sfd_arg);
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#if 0
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/*
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* Don't bother freeing the hook structure,, since we may
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* be rebooting because of a memory corruption problem,
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* and this might only make things worse. It doesn't
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* matter, anyway, since the system is just about to
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* reboot.
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*/
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free(dp, M_DEVBUF);
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#endif
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}
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}
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/*
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* "Mountroot hook" types, functions, and variables.
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*/
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struct mountroothook_desc {
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LIST_ENTRY(mountroothook_desc) mrd_list;
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struct device *mrd_device;
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void (*mrd_func) __P((struct device *));
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};
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LIST_HEAD(, mountroothook_desc) mountroothook_list;
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void *
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mountroothook_establish(func, dev)
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void (*func) __P((struct device *));
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struct device *dev;
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{
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struct mountroothook_desc *mrd;
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mrd = (struct mountroothook_desc *)
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malloc(sizeof(*mrd), M_DEVBUF, M_NOWAIT);
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if (mrd == NULL)
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return (NULL);
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mrd->mrd_device = dev;
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mrd->mrd_func = func;
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LIST_INSERT_HEAD(&mountroothook_list, mrd, mrd_list);
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return (mrd);
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}
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void
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mountroothook_disestablish(vhook)
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void *vhook;
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{
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#ifdef DIAGNOSTIC
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struct mountroothook_desc *mrd;
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for (mrd = mountroothook_list.lh_first; mrd != NULL;
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mrd = mrd->mrd_list.le_next)
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if (mrd == vhook)
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break;
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if (mrd == NULL)
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panic("mountroothook_disestablish: hook not established");
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#endif
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LIST_REMOVE((struct mountroothook_desc *)vhook, mrd_list);
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free(vhook, M_DEVBUF);
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}
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void
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mountroothook_destroy()
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{
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struct mountroothook_desc *mrd;
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while ((mrd = mountroothook_list.lh_first) != NULL) {
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LIST_REMOVE(mrd, mrd_list);
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free(mrd, M_DEVBUF);
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}
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}
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void
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domountroothook()
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{
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struct mountroothook_desc *mrd;
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for (mrd = mountroothook_list.lh_first; mrd != NULL;
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mrd = mrd->mrd_list.le_next) {
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if (mrd->mrd_device == root_device) {
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(*mrd->mrd_func)(root_device);
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return;
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}
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}
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}
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/*
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* Determine the root device and, if instructed to, the root file system.
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*
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* XXX Root and swap must be on the same class of device, (ie. DV_DISK
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* XXX or DV_IFNET) because of how (*mountroot)() is written.
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* XXX That should be fixed.
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*/
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#include "md.h"
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#if NMD == 0
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#undef MEMORY_DISK_HOOKS
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#endif
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#ifdef MEMORY_DISK_HOOKS
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static struct device fakemdrootdev = { DV_DISK, {}, NULL, 0, "md0", NULL };
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#endif
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void
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setroot(bootdv, bootpartition, nam2blk)
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struct device *bootdv;
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int bootpartition;
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struct devnametobdevmaj *nam2blk;
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{
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struct swdevt *swp;
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struct device *dv;
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register int len, i;
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dev_t nrootdev, nswapdev = NODEV;
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char buf[128];
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const char *rootdevname;
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dev_t temp;
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struct device *rootdv, *swapdv = NULL; /* XXX gcc */
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struct ifnet *ifp;
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const char *deffsname;
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struct vfsops *vops;
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extern int (*mountroot) __P((void));
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static struct devnametobdevmaj *last_nam2blk;
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if (nam2blk == NULL) {
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if (last_nam2blk == NULL)
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panic("setroot: no name to bdev major map");
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nam2blk = last_nam2blk;
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}
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last_nam2blk = nam2blk;
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#ifdef MEMORY_DISK_IS_ROOT
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bootdv = &fakemdrootdev;
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bootpartition = 0;
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#endif
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/*
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* If wildcarded root and we the boot device wasn't determined,
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* ask the user.
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*/
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if (rootspec == NULL && bootdv == NULL)
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boothowto |= RB_ASKNAME;
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/*
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* If NFS is specified as the file system, and we found
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* a DV_DISK boot device (or no boot device at all), then
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* find a reasonable network interface for "rootspec".
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*/
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vops = vfs_getopsbyname("nfs");
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if (vops != NULL && vops->vfs_mountroot == mountroot &&
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rootspec == NULL &&
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(bootdv == NULL || bootdv->dv_class != DV_IFNET)) {
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for (ifp = ifnet.tqh_first; ifp != NULL;
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ifp = ifp->if_list.tqe_next)
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if ((ifp->if_flags &
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(IFF_LOOPBACK|IFF_POINTOPOINT)) == 0)
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break;
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if (ifp == NULL) {
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/*
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* Can't find a suitable interface; ask the
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* user.
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*/
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boothowto |= RB_ASKNAME;
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} else {
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/*
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* Have a suitable interface; behave as if
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* the user specified this interface.
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*/
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rootspec = (const char *)ifp->if_xname;
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}
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}
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top:
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if (boothowto & RB_ASKNAME) {
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for (;;) {
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printf("root device");
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if (bootdv != NULL) {
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printf(" (default %s", bootdv->dv_xname);
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if (bootdv->dv_class == DV_DISK)
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printf("%c", bootpartition + 'a');
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printf(")");
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}
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printf(": ");
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len = getstr(buf, sizeof(buf));
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if (len == 0 && bootdv != NULL) {
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strcpy(buf, bootdv->dv_xname);
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len = strlen(buf);
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}
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if (len > 0 && buf[len - 1] == '*') {
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buf[--len] = '\0';
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dv = getdisk(buf, len, 1, nam2blk, &nrootdev);
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if (dv != NULL) {
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rootdv = dv;
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swapdv = dv;
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nswapdev = nrootdev;
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goto gotswap;
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}
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}
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dv = getdisk(buf, len, bootpartition, nam2blk,
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&nrootdev);
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if (dv != NULL) {
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rootdv = dv;
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break;
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}
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}
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/*
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* Because swap must be on the same device as root,
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* for network devices this is easy.
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*/
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if (rootdv->dv_class == DV_IFNET) {
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swapdv = NULL;
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goto gotswap;
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}
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for (;;) {
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printf("swap device (default %s", rootdv->dv_xname);
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if (rootdv->dv_class == DV_DISK)
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printf("b");
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printf("): ");
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len = getstr(buf, sizeof(buf));
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if (len == 0) {
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switch (rootdv->dv_class) {
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case DV_IFNET:
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nswapdev = NODEV;
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break;
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case DV_DISK:
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nswapdev = MAKEDISKDEV(major(nrootdev),
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DISKUNIT(nrootdev), 1);
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break;
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default:
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break;
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}
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swapdv = rootdv;
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break;
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}
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dv = getdisk(buf, len, 1, nam2blk, &nswapdev);
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if (dv) {
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if (dv->dv_class == DV_IFNET)
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nswapdev = NODEV;
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swapdv = dv;
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break;
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}
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}
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gotswap:
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#ifdef MEMORY_DISK_HOOKS
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/*
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* Mustn't swap on a memory disk!
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*/
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if (swapdv == &fakemdrootdev) {
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swapdv = NULL;
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nswapdev = NODEV;
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}
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#endif
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rootdev = nrootdev;
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dumpdev = nswapdev;
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swdevt[0].sw_dev = nswapdev;
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swdevt[1].sw_dev = NODEV;
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for (i = 0; i < nvfssw; i++) {
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if (vfssw[i] != NULL &&
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vfssw[i]->vfs_mountroot != NULL &&
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vfssw[i]->vfs_mountroot == mountroot)
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break;
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}
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if (i >= nvfssw) {
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mountroot = NULL;
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deffsname = "generic";
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} else
|
|
deffsname = vfssw[i]->vfs_name;
|
|
for (;;) {
|
|
printf("file system (default %s): ", deffsname);
|
|
len = getstr(buf, sizeof(buf));
|
|
if (len == 0)
|
|
break;
|
|
if (len == 4 && strcmp(buf, "halt") == 0)
|
|
boot(RB_HALT, NULL);
|
|
else if (len == 7 && strcmp(buf, "generic") == 0) {
|
|
mountroot = NULL;
|
|
break;
|
|
}
|
|
vops = vfs_getopsbyname(buf);
|
|
if (vops == NULL || vops->vfs_mountroot == NULL) {
|
|
printf("use one of: generic");
|
|
for (i = 0; i < nvfssw; i++)
|
|
if (vfssw[i] != NULL &&
|
|
vfssw[i]->vfs_mountroot != NULL)
|
|
printf(" %s",
|
|
vfssw[i]->vfs_name);
|
|
printf(" halt\n");
|
|
} else {
|
|
mountroot = vops->vfs_mountroot;
|
|
break;
|
|
}
|
|
}
|
|
|
|
} else if (rootspec == NULL) {
|
|
int majdev;
|
|
|
|
/*
|
|
* Wildcarded root; use the boot device.
|
|
*/
|
|
majdev = findblkmajor(bootdv->dv_xname, nam2blk);
|
|
if (majdev >= 0) {
|
|
/*
|
|
* Root and swap are on a disk. `bootpartition'
|
|
* is root, partition `b' is swap.
|
|
*/
|
|
rootdv = swapdv = bootdv;
|
|
rootdev = MAKEDISKDEV(majdev, bootdv->dv_unit,
|
|
bootpartition);
|
|
nswapdev = dumpdev =
|
|
MAKEDISKDEV(majdev, bootdv->dv_unit, 1);
|
|
} else {
|
|
/*
|
|
* Root and swap are on a net.
|
|
*/
|
|
rootdv = swapdv = bootdv;
|
|
nswapdev = dumpdev = NODEV;
|
|
}
|
|
|
|
#ifdef MEMORY_DISK_HOOKS
|
|
/*
|
|
* Mustn't swap to a memory disk!
|
|
*/
|
|
if (swapdv == &fakemdrootdev) {
|
|
swapdv = NULL;
|
|
nswapdev = NODEV;
|
|
}
|
|
#endif
|
|
|
|
swdevt[0].sw_dev = nswapdev;
|
|
swdevt[1].sw_dev = NODEV;
|
|
|
|
} else {
|
|
|
|
/*
|
|
* `root on <dev> swap on <dev> ...'
|
|
*/
|
|
|
|
/*
|
|
* If it's a network interface, we can bail out
|
|
* early.
|
|
*/
|
|
for (dv = alldevs.tqh_first; dv != NULL;
|
|
dv = dv->dv_list.tqe_next)
|
|
if (strcmp(dv->dv_xname, rootspec) == 0)
|
|
break;
|
|
if (dv != NULL && dv->dv_class == DV_IFNET) {
|
|
root_device = dv;
|
|
return;
|
|
}
|
|
|
|
rootdevname = findblkname(major(rootdev), nam2blk);
|
|
if (rootdevname == NULL) {
|
|
printf("unknown device major 0x%x\n", rootdev);
|
|
boothowto |= RB_ASKNAME;
|
|
goto top;
|
|
}
|
|
bzero(buf, sizeof(buf));
|
|
sprintf(buf, "%s%d", rootdevname, DISKUNIT(rootdev));
|
|
|
|
#ifdef MEMORY_DISK_HOOKS
|
|
if (strcmp(buf, fakemdrootdev.dv_xname) == 0) {
|
|
/*
|
|
* XXX Must make sure we don't swap
|
|
* XXX to a memory disk!
|
|
*/
|
|
root_device = &fakemdrootdev;
|
|
return;
|
|
}
|
|
#endif
|
|
|
|
for (dv = alldevs.tqh_first; dv != NULL;
|
|
dv = dv->dv_list.tqe_next) {
|
|
if (strcmp(buf, dv->dv_xname) == 0) {
|
|
root_device = dv;
|
|
break;
|
|
}
|
|
}
|
|
if (dv == NULL) {
|
|
printf("device %s (0x%x) not configured\n",
|
|
buf, rootdev);
|
|
boothowto |= RB_ASKNAME;
|
|
goto top;
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
root_device = rootdv;
|
|
|
|
switch (rootdv->dv_class) {
|
|
case DV_IFNET:
|
|
return;
|
|
|
|
case DV_DISK:
|
|
printf("root on %s%c", rootdv->dv_xname,
|
|
DISKPART(rootdev) + 'a');
|
|
if (nswapdev != NODEV)
|
|
printf(" swap on %s%c", swapdv->dv_xname,
|
|
DISKPART(nswapdev) + 'a');
|
|
printf("\n");
|
|
break;
|
|
|
|
default:
|
|
printf("can't determine root device\n");
|
|
boothowto |= RB_ASKNAME;
|
|
goto top;
|
|
}
|
|
|
|
/*
|
|
* Make the swap partition on the root drive the primary swap.
|
|
*/
|
|
temp = NODEV;
|
|
for (swp = swdevt; swp->sw_dev != NODEV; swp++) {
|
|
if (major(rootdev) == major(swp->sw_dev) &&
|
|
DISKUNIT(rootdev) == DISKUNIT(swp->sw_dev)) {
|
|
temp = swdevt[0].sw_dev;
|
|
swdevt[0].sw_dev = swp->sw_dev;
|
|
swp->sw_dev = temp;
|
|
break;
|
|
}
|
|
}
|
|
if (swp->sw_dev == NODEV)
|
|
return;
|
|
|
|
/*
|
|
* If dumpdev was the same as the old primary swap device, move
|
|
* it to the new primary swap device.
|
|
*/
|
|
if (temp == dumpdev)
|
|
dumpdev = swdevt[0].sw_dev;
|
|
}
|
|
|
|
static int
|
|
findblkmajor(name, nam2blk)
|
|
const char *name;
|
|
struct devnametobdevmaj *nam2blk;
|
|
{
|
|
int i;
|
|
|
|
if (nam2blk == NULL)
|
|
return (-1);
|
|
|
|
for (i = 0; nam2blk[i].d_name != NULL; i++)
|
|
if (strncmp(name, nam2blk[i].d_name,
|
|
strlen(nam2blk[i].d_name)) == 0)
|
|
return (nam2blk[i].d_maj);
|
|
return (-1);
|
|
}
|
|
|
|
const char *
|
|
findblkname(maj, nam2blk)
|
|
int maj;
|
|
struct devnametobdevmaj *nam2blk;
|
|
{
|
|
int i;
|
|
|
|
if (nam2blk == NULL)
|
|
return (NULL);
|
|
|
|
for (i = 0; nam2blk[i].d_name != NULL; i++)
|
|
if (nam2blk[i].d_maj == maj)
|
|
return (nam2blk[i].d_name);
|
|
return (NULL);
|
|
}
|
|
|
|
static struct device *
|
|
getdisk(str, len, defpart, nam2blk, devp)
|
|
char *str;
|
|
int len, defpart;
|
|
struct devnametobdevmaj *nam2blk;
|
|
dev_t *devp;
|
|
{
|
|
struct device *dv;
|
|
|
|
if ((dv = parsedisk(str, len, defpart, nam2blk, devp)) == NULL) {
|
|
printf("use one of:");
|
|
#ifdef MEMORY_DISK_HOOKS
|
|
printf(" %s[a-%c]", fakemdrootdev.dv_xname,
|
|
'a' + MAXPARTITIONS - 1);
|
|
#endif
|
|
for (dv = alldevs.tqh_first; dv != NULL;
|
|
dv = dv->dv_list.tqe_next) {
|
|
if (dv->dv_class == DV_DISK)
|
|
printf(" %s[a-%c]", dv->dv_xname,
|
|
'a' + MAXPARTITIONS - 1);
|
|
if (dv->dv_class == DV_IFNET)
|
|
printf(" %s", dv->dv_xname);
|
|
}
|
|
printf(" halt\n");
|
|
}
|
|
return (dv);
|
|
}
|
|
|
|
static struct device *
|
|
parsedisk(str, len, defpart, nam2blk, devp)
|
|
char *str;
|
|
int len, defpart;
|
|
struct devnametobdevmaj *nam2blk;
|
|
dev_t *devp;
|
|
{
|
|
struct device *dv;
|
|
char *cp, c;
|
|
int majdev, part;
|
|
|
|
if (len == 0)
|
|
return (NULL);
|
|
|
|
if (len == 4 && strcmp(str, "halt") == 0)
|
|
boot(RB_HALT, NULL);
|
|
|
|
cp = str + len - 1;
|
|
c = *cp;
|
|
if (c >= 'a' && c <= ('a' + MAXPARTITIONS - 1)) {
|
|
part = c - 'a';
|
|
*cp = '\0';
|
|
} else
|
|
part = defpart;
|
|
|
|
#ifdef MEMORY_DISK_HOOKS
|
|
if (strcmp(str, fakemdrootdev.dv_xname) == 0) {
|
|
dv = &fakemdrootdev;
|
|
goto gotdisk;
|
|
}
|
|
#endif
|
|
|
|
for (dv = alldevs.tqh_first; dv != NULL; dv = dv->dv_list.tqe_next) {
|
|
if (dv->dv_class == DV_DISK &&
|
|
strcmp(str, dv->dv_xname) == 0) {
|
|
#ifdef MEMORY_DISK_HOOKS
|
|
gotdisk:
|
|
#endif
|
|
majdev = findblkmajor(dv->dv_xname, nam2blk);
|
|
if (majdev < 0)
|
|
panic("parsedisk");
|
|
*devp = MAKEDISKDEV(majdev, dv->dv_unit, part);
|
|
break;
|
|
}
|
|
|
|
if (dv->dv_class == DV_IFNET &&
|
|
strcmp(str, dv->dv_xname) == 0) {
|
|
*devp = NODEV;
|
|
break;
|
|
}
|
|
}
|
|
|
|
*cp = c;
|
|
return (dv);
|
|
}
|
|
|
|
/*
|
|
* XXX shouldn't this be a common function?
|
|
*/
|
|
static int
|
|
getstr(cp, size)
|
|
char *cp;
|
|
int size;
|
|
{
|
|
char *lp;
|
|
int c, len;
|
|
|
|
cnpollc(1);
|
|
|
|
lp = cp;
|
|
len = 0;
|
|
for (;;) {
|
|
c = cngetc();
|
|
switch (c) {
|
|
case '\n':
|
|
case '\r':
|
|
printf("\n");
|
|
*lp++ = '\0';
|
|
cnpollc(0);
|
|
return (len);
|
|
case '\b':
|
|
case '\177':
|
|
case '#':
|
|
if (len) {
|
|
--len;
|
|
--lp;
|
|
printf("\b \b");
|
|
}
|
|
continue;
|
|
case '@':
|
|
case 'u'&037:
|
|
len = 0;
|
|
lp = cp;
|
|
printf("\n");
|
|
continue;
|
|
default:
|
|
if (len + 1 >= size || c < ' ') {
|
|
printf("\007");
|
|
continue;
|
|
}
|
|
printf("%c", c);
|
|
++len;
|
|
*lp++ = c;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Configure swap space and related parameters.
|
|
* XXX This, and swdevt[] in generial, should go away.
|
|
*/
|
|
void
|
|
swapconf()
|
|
{
|
|
struct swdevt *swp;
|
|
int nblks, maj;
|
|
|
|
for (swp = swdevt; swp->sw_dev != NODEV; swp++) {
|
|
maj = major(swp->sw_dev);
|
|
|
|
if (maj > nblkdev)
|
|
break;
|
|
if (bdevsw[maj].d_psize) {
|
|
nblks = (*bdevsw[maj].d_psize)(swp->sw_dev);
|
|
if (nblks != -1 &&
|
|
(swp->sw_nblks == 0 || swp->sw_nblks > nblks))
|
|
swp->sw_nblks = nblks;
|
|
else
|
|
swp->sw_nblks = 0;
|
|
swp->sw_nblks = ctod(dtoc(swp->sw_nblks));
|
|
}
|
|
}
|
|
}
|