wok view syslinux/stuff/iso2exe/init @ rev 14247
syslinux/iso2exe: use posixovl -F
| author | Pascal Bellard <pascal.bellard@slitaz.org> |
|---|---|
| date | Sun Mar 24 23:14:15 2013 +0100 (2013-03-24) |
| parents | b5ea41033c21 |
| children | 65b3fd0022ed |
line source
1 #!/bin/sh
3 DIALOG=dialog
5 get()
6 {
7 od -j $1 -N ${3:-2} -t u${3:-2} -An $2 2> /dev/null ||
8 dd if=$2 bs=1 skip=$1 count=${3:-2} 2> /dev/null | \
9 hexdump -e "\"\" 1/${3:-2} \"%d\""
10 }
12 getarg()
13 {
14 sed "/$1=/!d;s/.*$1=\\([^ ]*\\).*/\\1/" /proc/cmdline
15 }
17 gettazboot()
18 {
19 echo "Creating $(basename $1) ..."
20 O=$(($(get 66 /mnt/$ISO) - 0xE0))
21 L=$((0x8000 - $(get 24 /mnt/$ISO) - $O))
22 S=$((32+$L))
23 P=$((($S+511)/512))
24 E=$((4096-(32*$P)))
25 for i in 0x5A4D $(($S%512)) $P 0 2 $E -1 $((${2:-0}-16)) \
26 -2 0 256 -16 28 0x6C53 0x5469 0x7A61; do
27 printf '\\\\x%02X\\\\x%02X' $(($i&255)) $((($i>>8)&255)) | \
28 xargs echo -en
29 done > $1
30 dd bs=1 count=$L skip=$(echo $O) if=/mnt/$ISO >> $1 2> /dev/null
31 }
33 checkmagic()
34 {
35 [ -s $1 ] && [ $(getarg magic) == $(get 24 $1 4) ]
36 }
38 getiso()
39 {
40 mkdir -p /media/cdrom
41 blkid | while read dev info ; do
42 mount ${dev%:} /mnt
43 if checkmagic /mnt/$ISO; then
44 mount -o loop,ro /mnt/$ISO /media/cdrom
45 echo "Found $ISO on ${dev%:}"
46 break
47 fi
48 umount /mnt
49 done
50 }
52 uncpio()
53 {
54 echo "Extracting $(basename $1) ..."
55 case $(get 0 $1) in
56 *35615) zcat $1 ;;
57 *\ 93) unlzma -c $1 ;;
58 *) cat $1 ;;
59 esac | ( cd ${2:-/} ; cpio -idmu > /dev/null 2>&1 )
60 }
62 getuuid()
63 {
64 dev=$(mount | sed '/ \/mnt /!d;s/ .*//;s|/dev/||;q')
65 blkid | sed "/$dev:/!d;s/.*UUID=.\\([^ ]*\\)\".*/\\1/"
66 }
68 mkinitrd()
69 {
70 echo "Creating $(basename $1) ..."
71 for i in bin lib dev proc tmp mnt etc ; do
72 mkdir -p /tmp/fs/$i
73 done
74 for i in /dev/console /dev/null /dev/tty /dev/tty1 /dev/fuse \
75 /dev/hd* /dev/sd* ; do
76 cp -a $i /tmp/fs$i
77 done
78 for i in /bin/busybox $(which mount.posixovl) $(which blkid); do
79 cp $(LD_TRACE_LOADED_OBJECTS=1 /lib/ld*.so $i | \
80 sed 's|.*=> \(.*/lib/l[^ ]*\).*|\1|;/^\//!d') /tmp/fs/lib
81 cp $i /tmp/fs/bin
82 done
83 cp -a /lib/ld-* /tmp/fs/lib
84 for i in $(busybox | sed '/Current/,$!d'); do
85 ln -s busybox /tmp/fs/bin/${i%,}
86 done
87 ln -s /proc/mounts /tmp/fs/etc/mtab
88 cat > /tmp/fs/init <<EOT
89 #!/bin/sh
91 arg()
92 {
93 grep -q \$1 /proc/cmdline &&
94 val="\$(sed "s/.*\$1=\\([^ ]*\\).*/\\1/" < /proc/cmdline)" &&
95 echo "\$2 \$val"
96 }
98 mount -t proc /proc /proc
99 arg mount "Mount device"
100 mount \$( (blkid /dev/?d* || blkid) | grep \$val | sed 's/:.*//;q') /mnt
101 arg subroot "Change root to directory"
102 mount.posixovl -F /mnt/\$val
103 mount --bind /mnt /mnt/\$val/mnt/dos
104 LDSO=\$(ls /mnt/\$val/lib/ld-* | sed q)
105 umount /proc
106 export LD_LIBRARY_PATH=\$val/lib:\$val/usr/lib:/lib
107 exec /bin/switch_root /mnt \${LDSO#/mnt/} \$val/usr/sbin/chroot \$val /sbin/init
108 EOT
109 chmod +x /tmp/fs/init
110 ( cd /tmp/fs ; find * | cpio -o -H newc ) | lzma e $1 -si 2> /dev/null
111 rm -rf /tmp/fs
112 }
114 is_loram()
115 {
116 [ -s /lib/squashfs.ko* ]
117 }
119 doinstall()
120 {
121 mkdir /mnt/slitaz
122 mount.posixovl -F /mnt/slitaz || return
123 mkdir -p /mnt/slitaz/boot /mnt/slitaz/mnt/dos
124 if [ -d /media/cdrom/fs ]; then
125 cp -a /media/cdrom/fs/. /mnt/slitaz
126 elif is_loram ; then
127 for i in /media/cdrom/boot/rootfs?.* ; do
128 [ -s $(basename $i) ] && continue
129 cpio -i $i
130 done
131 for i in $(ls -r /media/cdrom/boot/rootfs*); do
132 mount -o loop,ro $i /sqfs/mnt
133 cp -a /sqfs/mnt/. /mnt/slitaz
134 umount -d /sqfs/mnt
135 done
136 else
137 for i in $(ls -r /media/cdrom/boot/rootfs*); do
138 uncpio $i /mnt/slitaz
139 done
140 fi
141 for i in /media/cdrom/boot/bzImage /media/cdrom/boot/*pxe* \
142 /media/cdrom/boot/isolinux/he* /media/cdrom/boot/isolinux/opt* \
143 /media/cdrom/README /media/cdrom/boot/memtest* ; do
144 [ -s $i ] && cp $i /mnt/slitaz/boot
145 done
146 umount -d /media/cdrom
147 gettazboot /mnt/slitaz/boot/tazboot.exe
148 mkinitrd /mnt/slitaz/boot/initrd
149 unix2dos > /mnt/slitaz/boot/tazboot.cmd <<EOT
150 kernel=\\slitaz\\boot\\bzimage
151 initrd=\\slitaz\\boot\\initrd
152 rw root=/dev/null mount=$(getuuid) subroot=slitaz autologin
153 EOT
154 unix2dos /mnt/slitaz/boot/he* /mnt/slitaz/boot/opt* \
155 /mnt/slitaz/boot/README
156 [ -x /mnt/slitaz/usr/sbin/mount.posixovl ] ||
157 cp $(which mount.posixovl) /mnt/slitaz/usr/sbin
158 ! grep -qs tazboot /mnt/boot.ini && unix2dos >> /mnt/boot.ini <<EOT
159 C:\\slitaz\\boot\\tazboot.exe="SliTaz"
160 EOT
161 grep -qs menuitem /mnt/config.sys && !grep -q tazboot /mnt/config.sys &&
162 sed -i 's/menudefault=/menuitem=slitaz,SliTaz\n&/' /mnt/config.sys &&
163 cat >> /mnt/config.sys <<EOT
164 [slitaz]
165 device=\\slitaz\\boot\\tazboot.exe
166 EOT
167 unix2dos /mnt/config.sys
168 }
170 install()
171 {
172 $DIALOG --clear \
173 --title " SliTaz UMSDOS like installation " \
174 --yes-label "Install" --yesno \
175 "\nSliTaz will be installed in the subdirectory \\slitaz of the current
176 DOS/Windows partition. You will see your files from /mnt/dos.\n\n
177 You can start SliTaz with \\slitaz\\boot\\tazboot.exe\n\n
178 To uninstall SliTaz, you have only to remove this directory.
179 The file \\boot.ini or \\config.sys may be modified too.\n\n
180 To do a traditional installation with disk partitioning,
181 start SliTaz Live with 'SliTaz RAM boot' menu.\n
182 " 16 70
183 [ $? -eq 0 -a -n "$(which mount.posixovl)" ] || return
184 doinstall
185 umount /proc
186 exec chroot /mnt/slitaz /sbin/init
187 }
189 tazboot()
190 {
191 $DIALOG --clear \
192 --title " SliTaz bootloader for DOS " \
193 --yes-label "Install" --yesno \
194 "\nThe file TAZBOOT.EXE will be created in the top directory. It supports
195 a bzImage linux kernel, multiple initramfs, a kernel command line and
196 an ISO image file loopback (retrieves files from an ISO file).\n\n
197 Usage: tazboot.exe [[@commands]|[kernel=<bzimage>]
198 [initrd=<rootfs>[,<rootfs2>...]] [iso=<isofile>] cmdline args ...]\n\n
199 Defaults: tazboot @tazboot.cmd or tazboot kernel=bzImage auto\n\n\
200 Examples for tazboot.cmd:\n\n\
201 iso=\\isos\\slitaz-4.0.iso\n\
202 kernel=boot/bzImage\n\
203 initrd=boot/rootfs4.gz,boot/rootfs3.gz,boot/rootfs2.gz,boot/rootfs1.gz\n\
204 rw root=/dev/null autologin\n\n\
205 kernel=\\slitaz\\vmlinuz root=/dev/sda5 ro\n\n
206 Unlike GRUB4DOS, it doesn't require unfragmented ISO image files.\n
207 " 24 78
208 [ $? -eq 0 ] || return
209 gettazboot /mnt/tazboot.exe
210 }
212 md5()
213 {
214 echo "Checking files..."
215 ( cd /media/cdrom ; md5sum -c md5sum ) > /tmp/data
216 $DIALOG --clear \
217 --title " Checked files " \
218 --textbox /tmp/data 24 78
219 rm -f /tmp/data
220 }
222 readme()
223 {
224 $DIALOG --clear \
225 --title " Readme " \
226 --textbox /media/cdrom/README 24 78
227 }
229 bootlog()
230 {
231 $DIALOG --clear \
232 --title " Linux boot messages " \
233 --textbox /tmp/dmesg 24 78
234 }
236 memtest()
237 {
238 $DIALOG --clear \
239 --title " Memtest86 " \
240 --yes-label "Install" --yesno \
241 "\nMemtest86 is a thorough, stand alone memory test for x86 architecture
242 computers. BIOS based memory tests are a quick, cursory check and often
243 miss many of the failures that are detected by Memtest86.\n
244 " 12 70
245 [ $? -eq 0 ] || return
246 cp /media/cdrom/boot/memtest /mnt
247 }
249 fdmemtest()
250 {
251 $DIALOG --clear \
252 --title " Create a Memtest86 boot floppy " \
253 --yes-label "Create floppy" --yesno \
254 "\nMemtest86 is a thorough, stand alone memory test for x86 architecture
255 computers. BIOS based memory tests are a quick, cursory check and often
256 miss many of the failures that are detected by Memtest86.\n\n
257 Please insert a blank disk in floppy drive.\n
258 " 12 70
259 [ $? -eq 0 ] || return
260 dd if=/media/cdrom/boot/memtest of=/dev/fd0
261 }
263 gpxe()
264 {
265 $DIALOG --clear \
266 --title " SliTaz Web boot " \
267 --yes-label "Install" --yesno \
268 "\nBoot your operating system from the internet and enjoy a full system
269 working entirely in RAM with speed and stability in mind. The Linux Kernel
270 and the complete SliTaz compressed root filesystem will be loaded into RAM
271 from the Web using PXE and HTTP protocols.\n
272 " 12 70
273 [ $? -eq 0 ] || return
274 cp /media/cdrom/boot/gpxe /mnt
275 }
277 fdgpxe()
278 {
279 $DIALOG --clear \
280 --title " Create a SliTaz Web boot floppy " \
281 --yes-label "Create floppy" --yesno \
282 "\nBoot your operating system from the internet and enjoy a full system
283 working entirely in RAM with speed and stability in mind. The Linux Kernel
284 and the complete SliTaz compressed root filesystem will be loaded into RAM
285 from the Web using PXE and HTTP protocols.\n\n
286 Please insert a blank disk in floppy drive.\n
287 " 12 70
288 [ $? -eq 0 ] || return
289 dd if=/media/cdrom/boot/gpxe of=/dev/fd0
290 }
292 cdfile()
293 {
294 [ -s /media/cdrom/$1 ] && echo -en "$2 ${3// /.}"
295 }
297 usbkey()
298 {
299 $DIALOG --clear \
300 --title " Create a SliTaz USB key " \
301 --yes-label "Continue" --yesno \
302 "\nUnlike a hard drive install, the filesystem is kept in a compressed
303 rootfs.gz. The filesystem is loaded entirely into memory upon boot.
304 This should increase responsiveness, protect the filesystem against
305 accidental corruption and reduce read/writes to the USB drive.
306 Once setup, the tazusb utility can rewrite the root filesystem
307 with any changes you have made since booting up,
308 giving the effective benefits of a hard drive install.\n\n
309 /home is mounted on boot using the UUID of your particular flash drive.
310 Unlike a device name, the UUID has the benefit of never changing from machine
311 to machine.\n\n
312 Please plug your USB stick in now.\n
313 " 18 70
314 [ $? -eq 0 -a -n "$(which tazusb)" ] || return
315 sleep 5
316 DEV="$(grep -l 1 /sys/block/*/removable | \
317 sed 's|/sys/block/\(.*\)/removable|\1|')"
318 [ -n "$DEV" ] || return
319 exec 3>&1
320 device=`$DIALOG --clear \
321 --title " Select your USB key " \
322 --menu "\nPlease select the USB key according to its known size.\n\n" \
323 14 70 4 \
324 $(for i in $DEV ; do
325 echo "/dev/$i $(( $(cat /sys/block/$i/size) / 1024 ))MB"
326 done) \
327 2>&1 1>&3`
328 retval=$?
329 exec 3>&-
330 [ $retval -eq 0 ] || continue
331 exec 3>&1
332 format=`$DIALOG --clear \
333 --title " Select the filesystem " \
334 --radiolist "\nPlease select the filesystem type to create.\n\n\
335 The filesystem creation will erase all the data \
336 in the USB key." 14 70 4 \
337 "none" "Do not erase the USB key" on \
338 "ext3" "Ext3 journaling filesystem" off \
339 "ext2" "Ext2 filesystem" off \
340 "fat32" "Windows FAT32 filesystem" off \
341 2>&1 1>&3`
342 retval=$?
343 exec 3>&-
344 [ $retval -eq 0 ] || continue
345 [ "$format" != "none" ] && tazusb format $device "SliTaz" $format
346 tazusb gen-iso2usb /mnt/$ISO $device
347 }
349 mount_loram()
350 {
351 is_loram || return
352 insmod /lib/squashfs.ko* 2> /dev/null
353 if [ -d /media/cdrom/fs ]; then
354 ln -s /media/cdrom/fs /sqfs
355 else
356 mkdir /sqfs
357 mount -o loop,ro -t squashfs /rootfs*.gz /sqfs
358 fi
359 ln -s /sqfs/lib/* lib
360 ln -s /sqfs/usr /sqfs/var /
361 for i in dmesg basename tr od reboot poweroff getty sync ; do
362 ln -s /sqfs/bin/busybox /bin/$i
363 done
364 }
366 umount_loram()
367 {
368 is_loram || return
369 rm /var /usr
370 umount -d /sqfs
371 rmdir /sqfs
372 }
374 text()
375 {
376 umount_loram
377 umount -d /media/cdrom
378 umount /mnt
379 umount /proc
380 exec /init
381 }
383 live()
384 {
385 n=0
386 for i in $(ls -r /media/cdrom/boot/rootfs*); do
387 [ $((n++)) -eq 0 ] || uncpio $i
388 done
389 text
390 }
392 restart()
393 {
394 sync
395 [ ! -L /sqfs ] && umount -d /media/cdrom && umount /mnt
396 reboot -f
397 }
399 stop()
400 {
401 sync
402 [ ! -L /sqfs ] && umount -d /media/cdrom && umount /mnt
403 poweroff -f
404 }
406 shell()
407 {
408 getty -n -l /bin/ash 38400 tty1 || sh
409 }
411 BIN=bin/mount.posixovl
412 [ -x /usr/s$BIN ] || mv /bin/mount.posixovl.iso2exe \
413 /usr/s$BIN 2> /dev/null || mv /bin/mount.posixovl.iso2exe /$BIN
414 mount -t proc /proc /proc
415 ISO="$(getarg iso | sed 's/.://;s|\\|/|g')"
416 getiso
417 mount_loram
418 case "$(basename $ISO | tr [A-Z] [a-z])$(getarg mode)" in
419 *install*) install ;;
420 *live*) live ;;
421 *text*) text ;;
422 esac
423 which $DIALOG || live
424 dmesg > /tmp/dmesg
426 while true; do
427 exec 3>&1
428 value=`$DIALOG --clear \
429 --title " Welcome to SliTaz " \
430 --menu "\nPlease select" 17 70 9 \
431 "live" "SliTaz RAM boot" \
432 "text" "SliTaz RAM boot (text mode only)" \
433 $(cdfile README "readme" "Show the README file") \
434 $(cdfile md5sum "md5" "Check ISO files") \
435 "install" "Hard disk installation" \
436 "usbkey" "USB key installation" \
437 "tazboot" "Get tazboot.exe Linux loader" \
438 $(cdfile Xboot/memtest "memtest" "Get Memtest86") \
439 $(cdfile boot/memtest "fdmemtest" "Create a Memtest86 boot floppy") \
440 $(cdfile Xboot/gpxe "gpxe" "Get SliTaz Web boot utility") \
441 $(cdfile boot/gpxe "fdgpxe" "Create a SliTaz Web boot floppy") \
442 "restart" "Restart the computer" \
443 "stop" "Power off" \
444 "bootlog" "Linux boot messages" \
445 "shell" "Shell prompt" \
446 2>&1 1>&3`
447 retval=$?
448 exec 3>&-
449 [ $retval -eq 0 ] || continue
450 $value
451 done