slitaz-boot-scripts view init @ rev 474
init: add mntopts
| author | Pascal Bellard <pascal.bellard@slitaz.org> |
|---|---|
| date | Thu Mar 23 17:04:05 2023 +0000 (13 months ago) |
| parents | 0dfcc5bf7b5a |
| children |
line source
1 #!/bin/sh
3 ### cached kernel parameters :
4 #
5 # modprobe=
6 # list of modules to load, example modprobe=r8169,btrfs
7 #
8 ### Frugal mode or live CD : using a root ram disk.
9 #
10 # tmpram= [RAMDISK]
11 # minimum % of free RAM to build the root tmpfs, default 100
12 # a lower value may work, such as 50
13 # rootfssize= [RAMDISK]
14 # size of / regarding the RAM size, default 90%
15 # rootfsinodes= [RAMDISK]
16 # files count of / regarding the RAM size
17 #
18 ### Indirect mode ; an initramfs is used to mount root from the hard disk.
19 ### Any rootfs should fit, minimum required is slitaz-base.
20 #
21 # mount= [MOUNT]
22 # device with root loop file or sub directory
23 # mntopts= [MOUNT]
24 # define non default mount options
25 # posixovl [MOUNT]
26 # use posix attributes on a non posix filesystem (VFAT, NTFS...)
27 # loopfs= [MOUNT]
28 # loop file for root filesystem
29 # subroot= [MOUNT]
30 # sub directory for root filesystem
31 # bindfs= [MOUNT] (deprecated)
32 # bind out of root tree part
33 #
34 # extra= [MOUNT]
35 # extra initrd files list to load
36 #
37 ### Special disk mode ; needs extra modules/softwares from preinit flavor.
38 #
39 # dmraid= [RAID]
40 # root semi hardware raid device name in /dev/mapper
41 # softraid= [RAID]
42 # root software device name in /dev/mapper
43 # lvmroot= [LVM]
44 # root logical volume name in /dev/mapper
45 # cryptoroot= [CRYPTO]
46 # encrypted root device using luks or loop-aes
47 #
48 ### Special mode used by loram flavor with aufs/overlayfs & squashfs
49 ### incremental/nested rootfs (russian dolls).
50 #
51 # rodev= [LORAM][MERGE]
52 # device (+ optional path) for the read only aufs branch
53 # rwdev= [LORAM][MERGE]
54 # (persistent) device for the r/w aufs branch instead of the ramfs
55 # isofs [LORAM]
56 # do not use squashfs filesystem images, but the cdrom filesystem only
59 fail() {
60 echo -e '\033[70G[ \033[1;3'${1:-1mFailed}'\033[0;39m ]'
61 }
64 quit() {
65 [ -d /mnt$4/etc ] || return
66 grep -q serial /proc/ioports && ! grep -q ttyS /mnt$4/etc/inittab &&
67 echo "ttyS0::respawn:/sbin/getty 115200,38400,9600,4800,2400 ttyS0" \
68 >> /mnt$4/etc/inittab
69 [ -n "$4" ] || grep -q 'tmpfs /mnt tmpfs' /proc/mounts ||
70 busybox mount /mnt -o remount,ro
71 busybox mount --move /run /mnt/${1:-run}
72 cat > /run/init <<EOT
73 $2
74 x=/sbin/switch_root
75 [ -x \$x ] && exec \$x mnt $3 /sbin/init
76 EOT
77 fail 2mDone
78 exit
79 }
82 arg() {
83 grep -q $1 /proc/cmdline
84 }
87 got() {
88 arg $1= && root="$(sed "s/.*$1=\\([^ ]*\\).*/\\1/" </proc/cmdline)"
89 }
92 msg() {
93 echo "Switching / to $1..."
94 }
97 use() {
98 got $1 && msg "$1 $root"
99 }
102 bbmnt() {
103 local o=$(grep -q mntopts= /proc/cmdline && sed 's/.*mntopts=\([^ ]*\).*/-o \1/' </proc/cmdline)
104 r=$(busybox blkid 2> /dev/null | grep "$root[:\"]" | sed 's|:.*||;q')
105 r=${r:-$(busybox blkid $root 2> /dev/null | sed 's|:.*||;q')}
106 r=${r:-$root}
107 if [ ! -b $r ]; then
108 r=${r#/dev/}
109 r=/dev/${r%%/*}
110 fi
111 d=${root#*$r}
112 t=$(busybox blkid $r 2> /dev/null | sed '/ TYPE=/!d;s/.* TYPE="/-t /;s/".*//')
113 busybox mount $o $r $1 $t
114 }
117 mnt() {
118 bbmnt $1 && return
119 w=$(cat /sys/module/usb_storage/parameters/delay_use)
120 w=$((1+${w:-2}))
121 echo "Sleep $w seconds..."
122 sleep $w
123 bbmnt $1
124 }
127 mod() {
128 for i in $@; do
129 grep -q "^$i\\W" /proc/modules && continue
130 grep -q "\\W$i\$" /proc/filesystems && continue
131 echo "Loading module: $i"
132 modprobe $i 2>/dev/null ||
133 for j in $(find /lib/modules /mnt/.fs*/lib/modules|sed "/\/$i.ko/!d" 2> /dev/null); do
134 busybox insmod $j && break
135 done
136 done
137 }
140 try() {
141 if [ ! -d /mnt/etc ] && got cryptoroot; then
142 mod dm-mod dm-crypt aes-256
143 d=${root#/dev/}
144 l=crypto-$d
145 if cryptsetup isLuks $root 2>/dev/null; then
146 cryptsetup luksOpen $root $l
147 else
148 read -st 60 -p "Pass phrase : " p
149 k=$(echo $p|hashalot -x -n 32 sha512)
150 echo 0 $(cat $(find /sys/block|grep /$d/size))\
151 crypt aes-plain $k 0 $root 0|dmsetup create $l
152 fi
153 busybox mount /dev/mapper/$l /mnt
154 fi
155 got subroot && return
156 got loopfs && return
157 if [ -d /mnt/etc ]; then
158 for i in $@; do
159 cp -a $i /mnt$(dirname $i)
160 done
161 quit
162 fi
163 fail
164 }
167 lvm() {
168 use lvmroot || return
169 mod dm-mod
170 vgscan --ignorelockingfailure
171 vgchange -ay --ignorelockingfailure
172 busybox mount /dev/mapper/$root /mnt
173 try /dev/mapper $1
174 }
177 ldraid() {
178 while read l; do
179 case "$l" in
180 *raid10*) mod raid10;;
181 *raid0*) mod raid0;;
182 *raid1*) mod raid1;;
183 *raid*) mod raid456;;
184 *mirror*) mod dm-mirror;;
185 esac
186 done
187 }
190 mntiso() {
191 umnt=
192 if got mount; then
193 dev=$root
194 x=$(busybox blkid|grep $dev|sed 's/:.*//;q')
195 root=${x:-$dev}
196 [ "$dev" = "$root" ] || dev="$root ($dev)"
197 echo "Mount $dev..."
198 mnt $1
199 umnt=" $umnt $1"
200 arg posixovl && echo "And posixovl..." && umnt=" $umnt $1" &&
201 mount.posixovl -F $1 -- -oallow_other -odefault_permissions -osuid
202 fi
203 got loopfs && echo "Into file $root..." && umnt=" $umnt $1" &&
204 losetup /dev/loop0 $1/$root && root=/dev/loop0 && mnt $1
205 [ -z "$umnt" ] && mnt $1
206 got bindfs && echo "Bind ${root/,/ to }..." &&
207 busybox mount --bind $1/${root%,*} $1/${root/,//}
208 true
209 }
213 if [ "$1" != 'log' ]; then
214 busybox mount -t proc proc /proc
215 busybox mount -t sysfs sys /sys
216 busybox mount -t tmpfs tmpfs /run
217 x=/sbin/init; echo "[ -x $x ] && exec $x" >/run/init
218 $0 log 2>&1 | tee /run/boot.log
219 busybox umount /sys
220 busybox umount /proc
221 . /run/init
222 sh
223 fi
225 mdev -s 2> /dev/null ||
226 for i in /sys/block/*/dev /sys/block/*/*/dev ; do
227 [ -s "$i" ] || continue
228 n=${i%/dev}
229 n=/dev/${n##*/}
230 [ -e $n ] && continue
231 echo "Create $n "
232 mknod $n b $(sed 's/:/ /' < $i)
233 done
235 got modprobe && mod ${root//,/ }
237 [ -d /proc/sys/dev/cdrom ] &&
238 ln -s $(sed '/name/!d;s/.*:[^a-z]*//' /proc/sys/dev/cdrom/info) /dev/cdrom
240 dev=$(busybox fdisk -l|awk '/sectors/{d=$2}/SliTaz persistent \/home/{print d $1;quit}'|sed 's|:||')
241 if got root && [ "$dev" -a "$root" == "/dev/null" ]; then
242 busybox blkid $dev | grep -q TYPE= || mkfs.vfat $dev
243 mount $dev /home && case $(busybox blkid $dev) in
244 *vfat*|*exfat*|*ntfs*)
245 mount.posixovl -F /home -- -oallow_other -odefault_permissions -osuid
246 esac
247 fs=/home/boot/rootfs.gz; [ -s $fs ] && (zcat $fs || unlzma < $fs || cat $fs) | cpio -idmu
248 [ -d /init.d ] && for i in /init.d/* ; do [ -x $i ] && . $i ; done
249 fi 2>&1 >/dev/null
251 if use dmraid; then
252 dmraid -s | sed '/^type/!ds/.*: *//' | ldraid
253 [ ${root:0:4} = /dev ] ||
254 root=/dev/mapper/$(dmraid -s|sed '/^name/!ds/.*: *//')p${root#p}
255 dmraid -ay
256 fi
257 use raiddev && raiddev="DEVICE ${root//,/ }"
258 use raidmail && raidmail="MAILADDR $root"
259 if use softraid; then
260 for i in 1 2 3 4 5 6 7 8 9; do
261 mdadm -E -s -c partitions > /etc/mdadm.conf
262 grep -qs " $root " /etc/mdadm.conf && break
263 sleep $i
264 done
265 [ "$raiddev" ] && echo "$raiddev" >> /etc/mdadm.conf
266 [ "$raidmail" ] && echo "$raidmail" >> /etc/mdadm.conf
267 grep level=raid /etc/mdadm.conf | ldraid
268 udevd --daemon
269 udevadm trigger
270 udevadm settle
271 for i in 1 2 3 4 5 6 7 8 9; do
272 sleep $i
273 mdadm -A -s
274 for j in $(sed '/\/md/!d;s|.*md/*\([0-9]*\).*|md\1|' \
275 /etc/mdadm.conf); do
276 grep -qs "$j : act" /proc/mdstat || continue 2
277 done
278 break
279 done
280 grep -qs "^$(basename $root) : act" /proc/mdstat ||
281 root=$(awk '/^md/ { print "/dev/" $1; exit }' < /proc/mdstat)
282 lvm /etc/mdadm.conf
283 fi
284 lvm
286 got extra && extra=$root && mntiso /mnt && for i in ${extra//,/ }; do
287 grep -q ' lm ' /proc/cpuinfo && [ -s /mnt/${i}64 ] && i=${i}64
288 (unlzma < /mnt/$i 2>/dev/null || zcat /mnt/$i 2>/dev/null || cat /mnt/$i) | cpio -idmu
289 done && for i in $umnt; do umount -l $i; done
290 arg cryptoroot= && try
291 if use subroot; then
292 cp $(LD_TRACE_LOADED_OBJECTS=1 /lib/ld*.so /usr/sbin/chroot | sed\
293 's|.*=> \(/lib/l[^ ]*\).*|\1|;/^\//!d') /usr/sbin/chroot /run
294 r=$root/run
295 quit $r "export LD_LIBRARY_PATH=$r:/lib"\
296 "$root$(ls /run/ld-*so) $r/chroot $root" "/$root"
297 fi
298 quit
299 msg tmpfs
300 root=100
301 got tmpram
302 r=$root
303 got rootfsinodes && inodes=",nr_inodes=$root"
304 root=90%
305 got rootfssize
306 [ $(busybox free|busybox awk '/Mem:/{print int(($4*100)/$3)}') -ge $r ] &&
307 busybox mount -t tmpfs -o size=$root$inodes tmpfs /mnt &&
308 export PATH=/mnt/bin:$PATH &&
309 for i in $(ls -a /); do
310 case "$i" in
311 .*|cdrom) ;;
312 mnt|proc|run|sys) mkdir /mnt/$i;;
313 dev) cp -a /$i /mnt;;
314 *) mv /$i /mnt; ln -s /mnt/$i / 2> /dev/null ||
315 LD_LIBRARY_PATH=/mnt/lib:/mnt/usr/lib:/lib:/usr/lib \
316 /mnt/lib/ld-linux.so.2 /mnt/bin/ln -s /mnt/$i /;;
317 esac
318 done || fail 3mSkipped
319 quit
320 mod squashfs 2>/dev/null || exit
321 msg aufs
322 br=/mnt/.rw
323 mkdir $br /mnt/.wd
324 got rwdev && mnt $br && br=$br$d
325 o=
326 p=
327 c=/mnt/.cdrom
328 if [ -z "$(ls /mnt/rootfs* 2>/dev/null)" ]; then
329 root=/dev/cdrom/fs
330 got rodev
331 mkdir -p $c /mnt$c /mnt/.rw$c
332 mntiso $c
333 o="-o 124"
334 p=/.cdrom/boot
335 c=$c$d
336 fi
337 l=0
338 r=
339 got isofs && r=:$c || for i in /mnt$p/rootfs?*.gz; do
340 fs=${i#*root}
341 r=$r:/mnt/.$fs
342 mkdir -p /mnt/.rw/mnt/.$fs /mnt/.$fs
343 losetup $o /dev/loop$((++l)) $i
344 busybox mount -o ro -t squashfs /dev/loop$l /mnt/.$fs
345 done
346 while read type opt; do
347 mod $type || continue
348 busybox mount -t $type -o $opt none /mnt && break
349 done <<EOT
350 aufs br=$br$r
351 overlayfs workdir=/mnt/.wd${r/:/,lowerdir=},upperdir=$br
352 EOT
353 quit