aboutsummaryrefslogtreecommitdiffstats
path: root/tmp/mkinitrd
blob: d29a49781fb70cd656afcf86aa25f0ef536c610b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
#!/bin/bash

# mkinitrd
#
# Written by Erik Troan <ewt@redhat.com>
#
# Contributors:
#	Elliot Lee <sopwith@cuc.edu>
#	Miguel de Icaza <miguel@nuclecu.unam.mx>
#	Christian 'Dr. Disk' Hechelmann <drdisk@ds9.au.s.shuttle.de>
#	Michael K. Johnson <johnsonm@redhat.com>
#	Pierre Habraken <Pierre.Habraken@ujf-grenoble.fr>
#	Jakub Jelinek <jakub@redhat.com>
#	Carlo Arenas Belon (carenas@chasqui.lared.net.pe>
#	Keith Owens <kaos@ocs.com.au>
#	Bernhard Rosenkraenzer <bero@redhat.com>
#	Matt Wilson <msw@redhat.com>
#
# Patched for Mandrake by Guillaume Cottenceau <gc at mandrakesoft.com>
#

PATH=/sbin:$PATH
export PATH

VERSION=3.1.6-mdk

compress=1
target=""
kernel=""
force=""
verbose=""
MODULES=""
img_vers=""
modulefile=/etc/modules.conf
tmpdir=

splash_script=/usr/share/bootsplash/scripts/
splash=auto

IMAGESIZE=100
PRESCSIMODS="scsi_mod sd_mod unknown"
fstab="/etc/fstab"
IGNOREMODS="$IGNOREMODS ppa imm ide-scsi ext2 usb-storage"

[[ -f /etc/sysconfig/installkernel ]] && source /etc/sysconfig/installkernel
[[ -n $SPLASH ]] && splash=$SPLASH

usage () {
    echo "usage: `basename $0` [--version] [-v] [-f] [--ifneeded] [--preload <module>]" >&2
    echo "       [--omit-scsi-modules] [--omit-raid-modules] [--splash=[auto|resolution] [--with=<module>]" >&2
    echo "       [--image-version] [--fstab=<fstab>] [--nocompress] [--tmpdir=<tmpdir>]" >&2
    echo "       <initrd-image> <kernel-version>" >&2
    echo "       (ex: `basename $0` /boot/initrd-$(uname -r).img $(uname -r))" >&2
    exit 1
}

findmodule() {
    skiperrors=""
    modName=$1
    if [ $(echo $modName | cut -b1) = "-" ]; then
	skiperrors=1
	modName=$(echo $modName | cut -b2-)
    fi

    if [ "$modName" = "i2o_block" ]; then
	findmodule i2o_pci
	findmodule i2o_core
	modName="i2o_block"
    fi

    if [ "$modName" = "pluto" ]; then
	findmodule fc4
	findmodule soc
	modName="pluto"
    fi

    if [ "$modName" = "fcal" ]; then
	findmodule fc4
	findmodule socal
	modName="fcal"
    fi

    if [ "$modName" = "xfs" ]; then
	if [ -n "$skiperrors" ]; then
		findmodule -pagebuf
	else
		findmodule pagebuf
	fi
	findmodule xfs_support
	if [ -n "$skiperrors" ]; then
		findmodule -xfs_dmapi
	else
		findmodule xfs_dmapi
	fi
	modName="xfs"
    fi

    if [ "$modName" = "ext3" ]; then
	if [ -n "$skiperrors" ]; then
		findmodule -jbd
	else
		findmodule jbd
	fi
	modName="ext3"
    fi

    for i in $IGNOREMODS; do
 	[ "$i" = "$modName" ] && return
    done

    fmPath=`(cd /lib/modules/$kernel; find -type f -name $modName.o | grep -v build)`

    if [ -n "$fmPath" ]; then
	# only need to add each module once
	if echo $MODULES | grep $fmPath >/dev/null 2>&1 ; then : ; else
	    MODULES="$MODULES $fmPath"
	fi
    else
	fmPath=`(cd /lib/modules/$kernel; find -type f -name $modName.o.gz | grep -v build)`

	if [ -n "$fmPath" ]; then
	    # only need to add each module once
	    if echo $MODULES | grep $fmPath >/dev/null 2>&1 ; then : ; else	
		zfmPath=`echo $fmPath | sed s/\.gz//`
		MODULES="$MODULES $zfmPath"
	    fi
	fi
    fi

    if [ -z "$fmPath" ]; then
	if [ -n "$skiperrors" ]; then
	    return
	fi

        # ignore the absence of the scsi modules
	for n in $PRESCSIMODS; do
	    if [ "$n" = "$modName" ]; then
		return;
	    fi
	done;
    
	echo "No module $modName found for kernel $kernel" >&2
	exit 1
    fi

}

is_good_fs() {
    local parttype= tmpname=
    local dir=$1
    [[ -d $dir ]] || return 1
    [[ -w $dir ]] || return 1
    [[ $dir == */ ]] && dir=${dir%/}
    parttype=$(awk "{if (\$2 == \""$dir"\") print \$3 }" /proc/mounts)

    while tmpname=${dir%/*} && [[ -z $parttype ]];do
	[[ -z $tmpname ]] && tmpname=/
	parttype=$(awk "{if (\$2 == \""$tmpname"\") print \$3 }" /proc/mounts)
	dir=$tmpname
    done

    case $parttype in
	nfs|tmpfs) return 1;;
	*) return 0;
    esac

}

inst() {
    if [ "$#" != "2" ];then
        echo "usage: inst <file> <destination>"
        return
    fi 
    [ -n "$verbose" ] && echo "$1 -> $2"
    cp $1 $2
}

is_ix86() {
    if [ -n "`uname -m | grep i.86`" ]; then return 0; fi
    return 1
}

is_ppc() {
    if [ -n "`uname -m | grep ppc`" ]; then return 0; fi
    return 1
}

while [ $# -gt 0 ]; do
    case $1 in
	--fstab*)
	    if echo $1 | grep '=' >/dev/null ; then
	    	fstab=`echo $1 | sed 's/^--fstab=//'`
	    else
		fstab=$2
		shift
	    fi		    
	    ;;

	--tmpdir*)
	    if echo $1 | grep '=' >/dev/null ; then
	    	tmpdir=`echo $1 | sed 's/^--tmpdir=//'`
	    else
		tmpdir=$2
		shift
	    fi		    
	    ;;
	--with*)
	    if echo $1 | grep '=' >/dev/null ; then
	    	modname=`echo $1 | sed 's/^--with=//'`
	    else
		modname=$2
		shift
	    fi		    

	    basicmodules="$basicmodules $modname"
	    ;;

	--version)
	    echo "mkinitrd: version $VERSION"
	    exit 0
	    ;;

	-v)
	    verbose=-v
	    ;;

	--nocompress)
	    compress=""
	    ;;

	--ifneeded)
	    ifneeded=1
	    ;;

	-f)
	    force=1
	    ;;
	--preload)
	    if echo $1 | grep '=' >/dev/null ; then
	    	modname=`echo $1 | sed 's/^--preload=//'`
	    else
		modname=$2
		shift
	    fi		    
	    PREMODS="$PREMODS $modname"
	    ;;
	--omit-scsi-modules)
	    PRESCSIMODS=""
	    noscsi=1;
	    ;;
	--omit-raid-modules)
	    noraid=1;
	    ;;
	--image-version)
	    img_vers=yes
	    ;;
	--splash)
	    if echo $1 | grep '=' >/dev/null ; then
	    	splash=`echo $1 | sed 's/^--splash=//'`
	    else
		splash=$2
		shift
	    fi		    
	    [[ $splash == no ]] && splash=
	    ;;
	*)
	    if [ -z "$target" ]; then
		target=$1
	    elif [ -z "$kernel" ]; then
		kernel=$1
	    else
		usage
	    fi
	    ;;
    esac

    shift
done

if [[ $splash == auto && -f $splash_script/detect-resolution ]];then
    splash=$( $splash_script/detect-resolution )
fi

if [ -z "$target" -o -z "$kernel" ]; then
    usage
fi

if [ -n "$img_vers" ]; then
    target="$target-$kernel"
fi

if [ -z "$force" -a -f $target ]; then
    echo "$target already exists." >&2
    exit 1
fi

if [ ! -d /lib/modules/$kernel ]; then
    echo "/lib/modules/$kernel is not a directory." >&2
    exit 1
fi

for n in $PREMODS; do
	findmodule $n
done

if [ -z "$noscsi" ]; then
    if [ ! -f $modulefile ]; then
        modulefile=/etc/conf.modules
    fi

    if [ -f $modulefile ]; then
	scsimodules=`grep -E "alias[ 	]+scsi_hostadapter" $modulefile | grep -v '^[ 	]*#' | LC_ALL=C sort -u | awk '{ print $3 }'`
	# support probeall form as found with Mandrake 8.1 and superior
	scsimodules="$scsimodules `sed -n 's/^ *probeall  *scsi_hostadapter//p' $modulefile`"

	if [ -n "$scsimodules" ]; then
	    SAVEMODULES=$MODULES

	    for n in $PRESCSIMODS; do
		findmodule $n
	    done

	    SAVEMODULESCMP=$MODULES

	    for n in $(for m in $scsimodules; do echo $m; done | awk 'a[$1]=="" {print;a[$1]=1}'); do
    # for now allow scsi modules to come from anywhere.  There are some
    # RAID controllers with drivers in block/
		findmodule $n
	    done

	    [ "$SAVEMODULESCMP" = "$MODULES" ] && MODULES=$SAVEMODULES
	fi
    fi
fi

# If we have ide devices and module ide, do the right thing
ide=/proc/ide/ide*
if [ -n "$ide" ]; then
    findmodule -ide-mod
    findmodule -ide-probe-mod
    findmodule -ide-disk
fi

if [ -z "$noraid" ]; then
    # load appropriate raid devices if necessary, this means that the
    # /etc/raidtab *must* be up to date for raided root to work.
    #if grep '^/dev/md' $fstab | grep -v noauto >/dev/null 2>&1 ; then
	for number in $(grep '^[ 	]*raid-level' /etc/raidtab 2>/dev/null |
			  awk '{print $2}' | LC_ALL=C sort -u) ; do
	    case $number in
	    [014])
		findmodule raid$number
		startraid=1
		;;
	    5)
		findmodule -xor
		findmodule raid$number
		startraid=1
		;;
	    *)
		echo "raid level $number (in /etc/raidtab) not recognized" >&2
		;;
	    esac
	done
    #fi
fi


# check to see if we need to set up a loopback filesystem
fullloopfile=$(awk '$2 == "/" && $4 ~ "loop" { print $1 }' /etc/fstab)
if [ -n "$fullloopfile" ]; then
    dir=$fullloopfile
    while [ -n "$dir" -a -z "$line" ]; do
        dir=$(dirname $dir)
	line=$(awk -v dir=$dir '$2 == dir { print $0 }' /etc/fstab)	
    done
    if [ -z "$line" -o "$dir" = "/" ]; then
	echo "bad fstab, loopback file doesn't belong to any device"
	exit 1
    fi
    loopDev=$(echo $line | awk '{ print $1 }')
    loopFs=$(echo $line | awk '{print $3 }')
    loopFile=$(echo $fullloopfile | sed "s|$dir||")

    basicmodules="$basicmodules -loop"
    if [ "$loopFs" = "vfat" -o "$loopFs" = "msdos" ]; then
	basicmodules="$basicmodules -fat"
    fi
    basicmodules="$basicmodules -${loopFs}"
	
fi

rootfs=$(awk '{ if ($1 !~ /^[ \t]*#/ && $2 == "/") { print $3; }}' $fstab)
rootfsopts=$(awk '{ if ($1 !~ /^[ \t]*#/ && $2 == "/" && $6) { print $4; }}' $fstab | sed "s|defaults||;s|auto||;s|loop||;s|,,|,|;s|,$||;s|^,||")

# in case the root filesystem is modular
findmodule -${rootfs}

if [ "$rootfs" = "ext3" ] && echo $kernel | grep -q "^2\.2"; then
    echo "Mandrake 2.2 kernels don't have ext3 compiled in, falling back to ext2 for you."
    rootfs=ext2
fi

for n in $basicmodules; do 
    findmodule $n
done

[[ -d $splash_script ]] || splash=
if [ "$rootfs" != "ext3" -a -z "$rootfsopts" -a -n "$ifneeded" -a -z "$MODULES" -a -z "$splash" ]; then
    if [ -n "$verbose" ]; then
	echo "Rootfs is not ext3, there is no rootfs special options, and"
	echo "no modules are needed -- not building initrd image."
    fi
    exit 0
fi

if [ -n "$verbose" ]; then
    echo "Using modules: $MODULES"
fi

[[ -n $tmpdir ]] && { is_good_fs $tmpdir || tmpdir= ;} #command-line
[[ -z $tmpdir && -n $TMPDIR ]] && { is_good_fs $TMPDIR || tmpdir= && tmpdir=$TMPDIR ;} #environement
if [[ -z $tmpdir ]];then
    if is_good_fs /tmp;then
	tmpdir=/tmp
    elif is_good_fs /var/tmp;then
	tmpdir=/var/tmp
    elif is_good_fs /root/tmp;then
	tmpdir=/root/tmp
    else
	echo "Cannot use a tmp directory" >&2
	exit 1
    fi
fi
[[ -n $verbose ]] && echo "Using $tmpdir as temporary directory."

MNTIMAGE=`mktemp -d ${tmpdir}/initrd.XXXXXX`
IMAGE=`mktemp ${tmpdir}/initrd.img.XXXXXX`
MNTPOINT=`mktemp -d ${tmpdir}/initrd.mnt.XXXXXX`
RCFILE=$MNTIMAGE/linuxrc
# cleanup on exit, hangup, interrupt, quit, termination
trap 'rm -rf $MNTIMAGE $MNTPOINT $IMAGE' 0 1 2 3 15

if [ -z "$MNTIMAGE" -o -z "$IMAGE" -o -z "$MNTPOINT" ]; then
    echo "Error creating temporaries.  Try again" >&2
    exit 1
fi

mkdir -p $MNTIMAGE
mkdir -p $MNTIMAGE/lib
mkdir -p $MNTIMAGE/bin
mkdir -p $MNTIMAGE/etc
mkdir -p $MNTIMAGE/dev
mkdir -p $MNTIMAGE/loopfs
mkdir -p $MNTIMAGE/proc
mkdir -p $MNTIMAGE/sysroot
ln -s bin $MNTIMAGE/sbin
# devfs will shadow some of my dev entries, I'll put them here
mkdir -p $MNTIMAGE/safedev   

# We don't need this directory, so let's save space
rm -rf $MNTPOINT/lost+found

inst /sbin/nash "$MNTIMAGE/bin/nash"
if is_ix86; then
    inst /sbin/insmod-DIET "$MNTIMAGE/bin/insmod"
else
    inst /sbin/insmod.static "$MNTIMAGE/bin/insmod"
fi
ln -s ../bin/nash $MNTIMAGE/sbin/modprobe

for MODULE in $MODULES; do
    f="/lib/modules/$kernel/$MODULE"
    if [ -e $f ]; then
	cp $verbose -a $f $MNTIMAGE/lib
    else
	gunzip -c $f.gz > $MNTIMAGE/lib/`basename $MODULE`
    fi
done

# mknod'ing the devices instead of copying them works both with and
# without devfs...
mknod $MNTIMAGE/dev/console c 5 1
mknod $MNTIMAGE/dev/null c 1 3
mknod $MNTIMAGE/dev/ram b 1 1
mknod $MNTIMAGE/dev/systty c 4 0
for i in 1 2 3 4; do
    mknod $MNTIMAGE/dev/tty$i c 4 $i
done

echo "#!/bin/nash" > $RCFILE
echo "" >> $RCFILE

for MODULE in $MODULES; do
    module=`echo $MODULE | sed "s|.*/||" | sed "s/.o$//"`

    options=`sed -n -e "s/^options[ 	][ 	]*$module[ 	][ 	]*//p" $modulefile 2>/dev/null`

    if [ -n "$verbose" ]; then
        echo "Loading module $module with options $options"
    fi
    echo "echo \"Loading $module module\"" >> $RCFILE
    echo "insmod /lib/$module.o $options" >> $RCFILE
done

echo "echo Mounting /proc filesystem" >> $RCFILE
echo "mount -t proc /proc /proc" >> $RCFILE

if [ -n "$loopDev" ]; then
    [ -d /initrd ] || mkdir /initrd

    # our dear friend devfsd will create links for us if devfs in use
    cp -aL $loopDev $MNTIMAGE/safedev
    cp -aL /dev/loop7 $MNTIMAGE/safedev

    loopDev=`echo $loopDev | sed "s|/dev/|/safedev/|"`

    echo "echo Mounting device containing loopback root filesystem" >> $RCFILE
    echo "mount -t $loopFs $loopDev /loopfs" >> $RCFILE
    echo "echo Setting up loopback device on $loopFile" >> $RCFILE
    echo "losetup /safedev/loop7 /loopfs$loopFile" >> $RCFILE
    rootdev=/safedev/loop7
else
    echo "echo Creating root device" >> $RCFILE
    echo "mkrootdev /dev/root" >> $RCFILE
    rootdev=/dev/root
fi

if [ -n "$startraid" ]; then
    cp -aL /dev/md0 $MNTIMAGE/safedev
    echo "raidautorun /safedev/md0" >> $RCFILE
fi

if echo $kernel | grep -q "^2\.2"; then
if is_ppc; then
[ -n "$loopDev" ] && echo "echo 0x07070000 > /proc/sys/kernel/real-root-dev" >> $RCFILE
else
[ -n "$loopDev" ] && echo "echo 0x0707 > /proc/sys/kernel/real-root-dev" >> $RCFILE
fi
echo "umount /proc" >> $RCFILE

else
# Linux-2.4
if [[ -n "$splash" ]];then
    if [[ $LOGO_CONSOLE != yes ]] && [[ $LOGO_CONSOLE != YES ]] && [[ $LOGO_CONSOLE != Yes ]]; then
	echo "echo disabling logo" >> $RCFILE
	echo "echo 0 > /proc/splash" >> $RCFILE
    fi
fi

echo "echo 0x0100 > /proc/sys/kernel/real-root-dev" >> $RCFILE
echo "umount /proc" >> $RCFILE

[ -n "$rootfsopts" ] && rootfsopts_msg="with flags $rootfsopts"
echo "echo Mounting root filesystem $rootfsopts_msg" >> $RCFILE
echo "mount --ro -t $rootfs $rootdev /sysroot $rootfsopts" >> $RCFILE
echo "pivot_root /sysroot /sysroot/initrd" >> $RCFILE
echo "echo Remounting devfs at correct place if necessary" >> $RCFILE
echo "handledevfs" >> $RCFILE
fi

chmod +x $RCFILE


for i in `ls -sk $MNTIMAGE/*/* | sed 's/ [^ ]*$//'`; do
    IMAGESIZE=$[IMAGESIZE + $i]
done
NB_INODES=20
for i in `find $MNTIMAGE`; do NB_INODES=$[NB_INODES + 1]; done
IMAGESIZE=$[IMAGESIZE + NBFILES / 10]  # 10 inodes needs 1k

dd if=/dev/zero of=$IMAGE bs=1k count=$IMAGESIZE 2> /dev/null

if [ -n "$verbose" ]; then
    echo "Contents of RCFILE:"
    cat $RCFILE 2> /dev/null
    echo "Creating filesystem with size ${IMAGESIZE}KB and $NB_INODES inodes"
fi
mke2fs -q -m 0 -F -N $NB_INODES -s 1 $IMAGE

mkdir -p $MNTPOINT
mount -t ext2 $IMAGE $MNTPOINT -o loop || {
	echo "Can't get a loopback device"
	exit 1
}

# We don't need this directory, so let's save space
rm -rf $MNTPOINT/lost+found


(cd $MNTIMAGE; tar cf - .) | (cd $MNTPOINT; tar xf -)

umount $MNTPOINT

if [ -n "$compress" ]; then
    gzip -9 < $IMAGE > $target
else
    cp -a $IMAGE $target
fi

if [[ -n "$splash" && -f "$splash_script/make-boot-splash" ]];then
    $splash_script/make-boot-splash $target $splash
fi