* Fix the problem with pax complaining "file would overwrite itself" for
already-existing device nodes. This is done by invoking pax with its
current working directory set to an empty temporary directory.
* Add "-t mtree" command line option, to force MAKEDEV to use "mtree
-e -U" to create device nodes. Here are some timings from "MAKEDEV
${method} all" on an i386 system; each method was executed three
times, first in an empty directory, then twice in an already-populated
directory:
-m mknod
4.56 real 1.58 user 1.68 sys
2.96 real 1.37 user 1.48 sys
2.95 real 1.43 user 1.44 sys
-p pax
1.80 real 0.18 user 0.62 sys
2.35 real 0.25 user 0.80 sys
2.38 real 0.24 user 0.82 sys
-t mtree
1.62 real 0.22 user 0.44 sys
0.23 real 0.29 user 0.04 sys
0.24 real 0.28 user 0.05 sys
* If no command line options force a choice, then prefer mtree, pax, or
mknod, in that order of preference.
No objections in tech-userlevel to an earlier version of this change.
This commit is contained in:
apb
parent
e47f3f6ebe
commit
b0ec85766d
182
etc/MAKEDEV.tmpl
182
etc/MAKEDEV.tmpl
@ -1,7 +1,7 @@
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#!/bin/sh -
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#!/bin/sh -
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# $NetBSD: MAKEDEV.tmpl,v 1.103 2008/04/02 01:34:36 dyoung Exp $
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# $NetBSD: MAKEDEV.tmpl,v 1.104 2008/04/09 20:19:15 apb Exp $
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#
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#
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# Copyright (c) 2003,2007 The NetBSD Foundation, Inc.
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# Copyright (c) 2003,2007,2008 The NetBSD Foundation, Inc.
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# All rights reserved.
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# All rights reserved.
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#
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#
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# Redistribution and use in source and binary forms, with or without
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# Redistribution and use in source and binary forms, with or without
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@ -304,13 +304,14 @@
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usage()
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usage()
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{
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{
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cat 1>&2 << _USAGE_
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cat 1>&2 << _USAGE_
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Usage: ${0##*/} [-fMs] [-m mknod] [-p pax] special [...]
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Usage: ${0##*/} [-fMs] [-m mknod] [-p pax] [-t mtree] special [...]
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Create listed special devices. Options:
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Create listed special devices. Options:
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-f Force permissions to be updated on existing devices.
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-f Force permissions to be updated on existing devices.
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-M Create memory file system.
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-M Create memory file system.
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-m mknod Name of mknod(8) program. [\$TOOL_MKNOD or mknod]
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-m mknod Name of mknod(8) program. [\$TOOL_MKNOD or mknod]
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-p pax Name of pax(2) program. [\$TOOL_PAX or pax]
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-p pax Name of pax(1) program. [\$TOOL_PAX or pax]
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-s Generate mtree(8) specfile instead of creating devices.
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-s Generate mtree(8) specfile instead of creating devices.
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-t mtree Name of mtree(8) program. [\$TOOL_MTREE or mtree]
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_USAGE_
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_USAGE_
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exit 1
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exit 1
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@ -328,7 +329,7 @@ zeropad()
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2) echo 00$2;;
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2) echo 00$2;;
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1) echo 0$2;;
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1) echo 0$2;;
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0) echo $2;;
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0) echo $2;;
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*) echo "$0: bad padding" 1>&2; exit 1;;
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*) die "bad padding" ;;
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esac
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esac
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}
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}
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@ -376,8 +377,8 @@ nooutput()
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}
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}
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# check_pax path_to_pax
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# check_pax path_to_pax
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# Check whether pax supports the command line options we
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# Check whether pax exists and supports the command line options
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# will want to use.
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# and input format that we will want to use.
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#
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#
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check_pax()
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check_pax()
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{
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{
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@ -385,6 +386,16 @@ check_pax()
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echo ". type=dir optional" | nooutput -12 "${pax}" -r -w -M -pe .
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echo ". type=dir optional" | nooutput -12 "${pax}" -r -w -M -pe .
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}
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}
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# check_mtree path_to_mtree
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# Check whether mtree exists and supports the command line options
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# and input format that we will want to use.
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#
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check_mtree()
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{
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local mtree="$1"
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echo ". type=dir optional" | nooutput -12 "${mtree}" -e -U
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}
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# setup args...
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# setup args...
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# Parse command line arguments, exit on error.
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# Parse command line arguments, exit on error.
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# Callers should shift $((OPTIND - 1)) afterwards.
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# Callers should shift $((OPTIND - 1)) afterwards.
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@ -393,16 +404,20 @@ setup()
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{
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{
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PATH=/sbin:/usr/sbin:/bin:/usr/bin:/rescue
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PATH=/sbin:/usr/sbin:/bin:/usr/bin:/rescue
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: ${TOOL_MKNOD:=mknod}
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: ${TOOL_MTREE:=mtree}
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: ${TOOL_PAX:=pax}
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do_create_mfs=false
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do_create_mfs=false
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do_force=false
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do_force=false
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do_mknod=false
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do_mknod=false
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do_pax=false
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do_pax=false
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do_mtree=false
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do_redirect=false
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do_redirect=false
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do_specfile=false
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do_specfile=false
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opts=
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opts=
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while getopts Mfm:p:s ch; do
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while getopts Mfm:p:st: ch; do
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# Options that should not be passed through to
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# Note that $opts is only for options pased through to
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# MAKEDEV.local are not added to $opts.
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# MAKEDEV.local, not for all options.
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case ${ch} in
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case ${ch} in
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M)
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M)
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# "-M" sets do_create_mfs;
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# "-M" sets do_create_mfs;
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@ -431,6 +446,17 @@ setup()
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s) do_specfile=true
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s) do_specfile=true
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opts="${opts} -s"
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opts="${opts} -s"
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;;
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;;
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t) TOOL_MTREE="${OPTARG}"
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if check_mtree "${TOOL_MTREE}"; then
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do_mtree=true
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# do not add this to $opts; we will later
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# add "-s" instead.
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else
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warn "Ignored -t option:" \
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"${TOOL_MTREE} is missing or broken"
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do_mknod=true
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fi
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;;
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*) usage ;;
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*) usage ;;
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esac
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esac
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done
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done
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@ -463,34 +489,44 @@ setup()
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# do_force requires mknod
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# do_force requires mknod
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if $do_force; then
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if $do_force; then
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if $do_pax || $do_specfile; then
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if $do_mtree || $do_pax || $do_specfile; then
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warn "-f option works only with mknod"
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die "-f option works only with mknod"
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exit 1
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fi
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fi
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do_mknod=true
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do_mknod=true
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fi
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fi
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# If no other options take precedence, then default to
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# If no explicit method was specified on the command line or
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# using pax, if it appears to work.
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# forced above, then use one of mtree, pax, or mknod, in that
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if ! $do_mknod && ! $do_specfile && ! $do_pax; then
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# order of preference.
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: ${TOOL_PAX:=pax}
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#
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if check_pax "${TOOL_PAX}"; then
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# mtree is preferred because it's fast and designed for the
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# purpose. However, it's unlikely to be available early in the
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# boot sequence, when init(8) may invoke MAKEDEV(8).
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#
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# pax is usually acceptable, and it's likely to be available
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# early in the boot sequence. However, it's much slower than mtree.
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#
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# mknod is just very slow, because the shell has to fork for
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# each device node.
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#
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if ! ( $do_mtree || $do_pax || $do_mknod || $do_specfile ); then
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if check_mtree "${TOOL_MTREE}"; then
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do_mtree=true
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elif check_pax "${TOOL_PAX}"; then
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do_pax=true
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do_pax=true
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else
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else
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do_mknod=true
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do_mknod=true
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fi
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fi
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fi
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fi
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# Now we need exactly one of do_pax, do_mknod, or do_specfile.
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# Now we need exactly one node-creation method.
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case $(( $($do_pax && echo 1 || echo 0) + \
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case $(( $($do_mtree && echo 1 || echo 0) + \
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$($do_pax && echo 1 || echo 0) + \
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$($do_mknod && echo 1 || echo 0) + \
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$($do_mknod && echo 1 || echo 0) + \
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$($do_specfile && echo 1 || echo 0) ))
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$($do_specfile && echo 1 || echo 0) ))
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in
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in
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1) : OK ;;
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1) : OK ;;
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*)
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*) die "-m, -p, -s, and -t options are mutually exclusive" ;;
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warn "-m, -p, and -s options are mutually exclusive"
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exit 1
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;;
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esac
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esac
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# If we are using mknod, then decide what options to pass it.
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# If we are using mknod, then decide what options to pass it.
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@ -503,9 +539,9 @@ setup()
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fi
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fi
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fi
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fi
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# do_pax internally implies do_specfile. This happens after
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# do_mtree or do_pax internally implies do_specfile.
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# checking for mutually-exclusive options.
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# This happens after checking for mutually-exclusive options.
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if $do_pax && ! $do_specfile; then
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if ($do_mtree || $do_pax) && ! $do_specfile; then
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do_specfile=true
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do_specfile=true
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opts="${opts} -s"
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opts="${opts} -s"
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fi
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fi
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@ -518,15 +554,18 @@ setup()
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wrap_makedev()
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wrap_makedev()
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{
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{
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if $do_specfile; then
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if $do_specfile; then
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# "optional" tells pax(1) not to create the directory itself.
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# "." must appear as the first line of the specfile.
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# "optional" means do not create the directory itself.
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echo ". type=dir optional"
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echo ". type=dir optional"
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fi
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fi
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"$@"
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"$@"
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}
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}
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# makedev_main makedev_name args...
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# makedev_main makedev_name args...
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# Perform most of the work of the main program. makedev_name is
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# Perform most of the work of the main program. makedev_name
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# the name of a makedev-like function, and the other args are
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# is typically "makedev", but may be the name of some other
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# makedev-like function (if we are invoked from MAKEDEV.local or
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# some other script). The other args to this function are the
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# command line args with which the MAKEDEV (or MAKEDEV.local)
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# command line args with which the MAKEDEV (or MAKEDEV.local)
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# script was invoked.
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# script was invoked.
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#
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#
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@ -547,10 +586,30 @@ makedev_main()
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unset count_nodes
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unset count_nodes
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fi
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fi
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if $do_pax ; then
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# If using mtree or pax, then wrap_makedev should print an mtree
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# wrap_makedev will print an mtree specification because
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# specification, which we postprocess to create the device nodes.
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# do_pax implies do_specfile. pax will create device nodes.
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# Otherwise, wrap_makedev should do all the work itself.
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wrap_makedev $makedev ${1+"$@"} | ${TOOL_PAX} -r -w -M -pe .
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if $do_mtree ; then
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wrap_makedev $makedev ${1+"$@"} \
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| nooutput -1 "${TOOL_MTREE}" -e -U
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elif $do_pax ; then
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wrap_makedev $makedev ${1+"$@"} \
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| (
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# Run pax in an empty directory, so it pays
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# attention only to the specfile, without being
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# confused by the existing contents of the target
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|
# directory. Without this, pax would complain "file
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# would overwrite itself" for already-existing
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# device nodes.
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|
tmpdir=./tmp.$$
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|
mkdir "${tmpdir}" || die "can't create temporary directory"
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|
cd "${tmpdir}" || die "can't cd to temporary directory"
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|
"${TOOL_PAX}" -r -w -M -pe ..
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status=$?
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|
cd .. # back to where we started
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|
rmdir "${tmpdir}"
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|
exit $status
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|
)
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else
|
else
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wrap_makedev $makedev ${1+"$@"}
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wrap_makedev $makedev ${1+"$@"}
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fi
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fi
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@ -606,7 +665,7 @@ makedir()
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return
|
return
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fi
|
fi
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if $do_specfile; then
|
if $do_specfile; then
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echo "./$1 type=dir mode=$2 gid=$g_wheel uid=$u_root optional"
|
echo "./$1 type=dir mode=$2 gid=$g_wheel uid=$u_root"
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else
|
else
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nooutput -2 mkdir $1
|
nooutput -2 mkdir $1
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chmod $2 $1
|
chmod $2 $1
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@ -618,6 +677,12 @@ warn()
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echo 1>&2 "$0: $*"
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echo 1>&2 "$0: $*"
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}
|
}
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|
die()
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{
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echo 1>&2 "$0: $*"
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exit 1
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}
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# makedev special [...]
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# makedev special [...]
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# the main loop
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# the main loop
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#
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#
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@ -705,15 +770,15 @@ isdns)
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;;
|
;;
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|
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std)
|
std)
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mkdev console c %cons_chr% 0 600
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mkdev console c %cons_chr% 0 600
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mkdev constty c %cons_chr% 1 600
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mkdev constty c %cons_chr% 1 600
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mkdev drum c %swap_chr% 0 640 $g_kmem
|
mkdev drum c %swap_chr% 0 640 $g_kmem
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mkdev kmem c %mem_chr% 1 640 $g_kmem
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mkdev kmem c %mem_chr% 1 640 $g_kmem
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||||||
mkdev mem c %mem_chr% 0 640 $g_kmem
|
mkdev mem c %mem_chr% 0 640 $g_kmem
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mkdev null c %mem_chr% 2 666
|
mkdev null c %mem_chr% 2 666
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mkdev zero c %mem_chr% 12 666
|
mkdev zero c %mem_chr% 12 666
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mkdev klog c %log_chr% 0 600
|
mkdev klog c %log_chr% 0 600
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mkdev ksyms c %ksyms_chr% 0 444
|
mkdev ksyms c %ksyms_chr% 0 444
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if $nofdesc; then
|
if $nofdesc; then
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mkdev tty c %ctty_chr% 0 666
|
mkdev tty c %ctty_chr% 0 666
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||||||
mkdev stdin c %filedesc_chr% 0 666
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mkdev stdin c %filedesc_chr% 0 666
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@ -767,7 +832,7 @@ ttyY*)
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|||||||
|
|
||||||
ttyU*)
|
ttyU*)
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unit=${i#ttyU}
|
unit=${i#ttyU}
|
||||||
mkdev ttyU$unit c %ucom_chr% $(($unit + $dialin )) "" "" $u_uucp
|
mkdev ttyU$unit c %ucom_chr% $(($unit + $dialin )) "" "" $u_uucp
|
||||||
mkdev dtyU$unit c %ucom_chr% $(($unit + $dialout )) "" "" $u_uucp
|
mkdev dtyU$unit c %ucom_chr% $(($unit + $dialout )) "" "" $u_uucp
|
||||||
mkdev ctyU$unit c %ucom_chr% $(($unit + $callunit)) "" "" $u_uucp
|
mkdev ctyU$unit c %ucom_chr% $(($unit + $callunit)) "" "" $u_uucp
|
||||||
;;
|
;;
|
||||||
@ -1128,8 +1193,8 @@ gdrom*)
|
|||||||
|
|
||||||
lpt*|lpa*)
|
lpt*|lpa*)
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||||||
case $i in
|
case $i in
|
||||||
lpt*) name=lpt; unit=${i#lpt}; chr=%lpt_chr%; flags=0;;
|
lpt*) name=lpt; unit=${i#lpt}; chr=%lpt_chr%; flags=0;;
|
||||||
lpa*) name=lpa; unit=${i#lpa}; chr=%lpt_chr%; flags=128;;
|
lpa*) name=lpa; unit=${i#lpa}; chr=%lpt_chr%; flags=128;;
|
||||||
esac
|
esac
|
||||||
mkdev $name$unit c $chr $(($unit + $flags))
|
mkdev $name$unit c $chr $(($unit + $flags))
|
||||||
mkdev lpt${unit}ctl c $chr $(($unit + 256))
|
mkdev lpt${unit}ctl c $chr $(($unit + 256))
|
||||||
@ -1199,9 +1264,9 @@ audio*)
|
|||||||
mixer=mixer$unit
|
mixer=mixer$unit
|
||||||
audioctl=audioctl$unit
|
audioctl=audioctl$unit
|
||||||
: ${unit:-0}
|
: ${unit:-0}
|
||||||
mkdev $sound c %audio_chr% $(($unit + 0)) 666
|
mkdev $sound c %audio_chr% $(($unit + 0)) 666
|
||||||
mkdev $audio c %audio_chr% $(($unit + 128)) 666
|
mkdev $audio c %audio_chr% $(($unit + 128)) 666
|
||||||
mkdev $mixer c %audio_chr% $(($unit + 16)) 666
|
mkdev $mixer c %audio_chr% $(($unit + 16)) 666
|
||||||
mkdev $audioctl c %audio_chr% $(($unit + 192)) 666
|
mkdev $audioctl c %audio_chr% $(($unit + 192)) 666
|
||||||
;;
|
;;
|
||||||
|
|
||||||
@ -1219,7 +1284,7 @@ music*)
|
|||||||
unit=${i#music}
|
unit=${i#music}
|
||||||
: ${unit:-0}
|
: ${unit:-0}
|
||||||
mkdev music$unit c %sequencer_chr% $(($unit + 0)) 666
|
mkdev music$unit c %sequencer_chr% $(($unit + 0)) 666
|
||||||
mkdev sequencer$unit c %sequencer_chr% $(($unit + 128)) 666
|
mkdev sequencer$unit c %sequencer_chr% $(($unit + 128)) 666
|
||||||
;;
|
;;
|
||||||
|
|
||||||
radio*)
|
radio*)
|
||||||
@ -1486,7 +1551,7 @@ ite*|ttye*)
|
|||||||
ite*) unit=${i#ite};;
|
ite*) unit=${i#ite};;
|
||||||
ttye*) unit=${i#ttye};;
|
ttye*) unit=${i#ttye};;
|
||||||
esac
|
esac
|
||||||
mkdev ttye$unit c %ite_chr% $unit
|
mkdev ttye$unit c %ite_chr% $unit
|
||||||
;;
|
;;
|
||||||
|
|
||||||
pms*)
|
pms*)
|
||||||
@ -1532,7 +1597,7 @@ vidcconsole0)
|
|||||||
|
|
||||||
view*)
|
view*)
|
||||||
unit=${i#view}
|
unit=${i#view}
|
||||||
mkdev view$unit c %view_chr% $unit 666
|
mkdev view$unit c %view_chr% $unit 666
|
||||||
;;
|
;;
|
||||||
|
|
||||||
mouse*)
|
mouse*)
|
||||||
@ -1820,7 +1885,7 @@ fw*)
|
|||||||
putter)
|
putter)
|
||||||
mkdev putter c %putter_chr% 0 600
|
mkdev putter c %putter_chr% 0 600
|
||||||
mkdev pud c %putter_chr% 1 600
|
mkdev pud c %putter_chr% 1 600
|
||||||
lndev putter puffs
|
lndev putter puffs
|
||||||
;;
|
;;
|
||||||
|
|
||||||
midevend)
|
midevend)
|
||||||
@ -1927,8 +1992,8 @@ makedisk_p16high()
|
|||||||
mkdev ${name}${unit}f b $blk $(($unit * 8 + 5)) 640 $g_operator
|
mkdev ${name}${unit}f b $blk $(($unit * 8 + 5)) 640 $g_operator
|
||||||
mkdev ${name}${unit}g b $blk $(($unit * 8 + 6)) 640 $g_operator
|
mkdev ${name}${unit}g b $blk $(($unit * 8 + 6)) 640 $g_operator
|
||||||
mkdev ${name}${unit}h b $blk $(($unit * 8 + 7)) 640 $g_operator
|
mkdev ${name}${unit}h b $blk $(($unit * 8 + 7)) 640 $g_operator
|
||||||
mkdev ${name}${unit}i b $blk $(($unit * 8 + $ho + 8)) 640 $g_operator
|
mkdev ${name}${unit}i b $blk $(($unit * 8 + $ho + 8)) 640 $g_operator
|
||||||
mkdev ${name}${unit}j b $blk $(($unit * 8 + $ho + 9)) 640 $g_operator
|
mkdev ${name}${unit}j b $blk $(($unit * 8 + $ho + 9)) 640 $g_operator
|
||||||
mkdev ${name}${unit}k b $blk $(($unit * 8 + $ho + 10)) 640 $g_operator
|
mkdev ${name}${unit}k b $blk $(($unit * 8 + $ho + 10)) 640 $g_operator
|
||||||
mkdev ${name}${unit}l b $blk $(($unit * 8 + $ho + 11)) 640 $g_operator
|
mkdev ${name}${unit}l b $blk $(($unit * 8 + $ho + 11)) 640 $g_operator
|
||||||
mkdev ${name}${unit}m b $blk $(($unit * 8 + $ho + 12)) 640 $g_operator
|
mkdev ${name}${unit}m b $blk $(($unit * 8 + $ho + 12)) 640 $g_operator
|
||||||
@ -1943,8 +2008,8 @@ makedisk_p16high()
|
|||||||
mkdev r${name}${unit}f c $chr $(($unit * 8 + 5)) 640 $g_operator
|
mkdev r${name}${unit}f c $chr $(($unit * 8 + 5)) 640 $g_operator
|
||||||
mkdev r${name}${unit}g c $chr $(($unit * 8 + 6)) 640 $g_operator
|
mkdev r${name}${unit}g c $chr $(($unit * 8 + 6)) 640 $g_operator
|
||||||
mkdev r${name}${unit}h c $chr $(($unit * 8 + 7)) 640 $g_operator
|
mkdev r${name}${unit}h c $chr $(($unit * 8 + 7)) 640 $g_operator
|
||||||
mkdev r${name}${unit}i c $chr $(($unit * 8 + $ho + 8)) 640 $g_operator
|
mkdev r${name}${unit}i c $chr $(($unit * 8 + $ho + 8)) 640 $g_operator
|
||||||
mkdev r${name}${unit}j c $chr $(($unit * 8 + $ho + 9)) 640 $g_operator
|
mkdev r${name}${unit}j c $chr $(($unit * 8 + $ho + 9)) 640 $g_operator
|
||||||
mkdev r${name}${unit}k c $chr $(($unit * 8 + $ho + 10)) 640 $g_operator
|
mkdev r${name}${unit}k c $chr $(($unit * 8 + $ho + 10)) 640 $g_operator
|
||||||
mkdev r${name}${unit}l c $chr $(($unit * 8 + $ho + 11)) 640 $g_operator
|
mkdev r${name}${unit}l c $chr $(($unit * 8 + $ho + 11)) 640 $g_operator
|
||||||
mkdev r${name}${unit}m c $chr $(($unit * 8 + $ho + 12)) 640 $g_operator
|
mkdev r${name}${unit}m c $chr $(($unit * 8 + $ho + 12)) 640 $g_operator
|
||||||
@ -1963,17 +2028,17 @@ makedisk_minimal()
|
|||||||
rn=%RAWDISK_NAME%
|
rn=%RAWDISK_NAME%
|
||||||
|
|
||||||
mkdev ${name}${unit}a b $blk $(($unit * $doff + 0)) 640 $g_operator
|
mkdev ${name}${unit}a b $blk $(($unit * $doff + 0)) 640 $g_operator
|
||||||
mkdev ${name}${unit}$rn b $blk $(($unit * $doff + $ro)) 640 $g_operator
|
mkdev ${name}${unit}$rn b $blk $(($unit * $doff + $ro)) 640 $g_operator
|
||||||
mkdev r${name}${unit}a c $chr $(($unit * $doff + 0)) 640 $g_operator
|
mkdev r${name}${unit}a c $chr $(($unit * $doff + 0)) 640 $g_operator
|
||||||
mkdev r${name}${unit}$rn c $chr $(($unit * $doff + $ro)) 640 $g_operator
|
mkdev r${name}${unit}$rn c $chr $(($unit * $doff + $ro)) 640 $g_operator
|
||||||
}
|
}
|
||||||
|
|
||||||
# create_mfs_dev nodes
|
# create_mfs_dev nodes
|
||||||
# Create a memory file system for a given number of device nodes,
|
# Create a memory file system for a given number of device nodes,
|
||||||
# and mount it. Attempts to use mount_tmpfs, or falls back to
|
# and mount it. Attempts to use mount_tmpfs, or falls back to
|
||||||
# mount_mfs.
|
# mount_mfs.
|
||||||
#
|
#
|
||||||
# If do_redirect, then also redirect output to the console.
|
# If do_redirect, then also redirect output to the console.
|
||||||
#
|
#
|
||||||
create_mfs_dev()
|
create_mfs_dev()
|
||||||
{
|
{
|
||||||
@ -2004,8 +2069,7 @@ create_mfs_dev()
|
|||||||
then
|
then
|
||||||
fstype=mfs
|
fstype=mfs
|
||||||
else
|
else
|
||||||
warn "Failed to create memory file system"
|
die "Failed to create memory file system"
|
||||||
exit 1
|
|
||||||
fi
|
fi
|
||||||
|
|
||||||
# Our current directory was in the lower file system; change it to
|
# Our current directory was in the lower file system; change it to
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user