slitaz-boot-scripts view init @ rev 450
init: mount usb disks by uuid
| author | Pascal Bellard <pascal.bellard@slitaz.org> |
|---|---|
| date | Sun Mar 04 18:32:31 2018 +0100 (2018-03-04) |
| parents | 67c6e0935bba |
| children | 161b43b7365c |
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, default 0 (unlimited)
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 # posixovl [MOUNT]
24 # use posix attributes on a non posix filesystem (VFAT, NTFS...)
25 # loopfs= [MOUNT]
26 # loop file for root filesystem
27 # subroot= [MOUNT]
28 # sub directory for root filesystem
29 # bindfs= [MOUNT] (deprecated)
30 # bind out of root tree part
31 #
32 ### Special disk mode ; needs extra modules/softwares from preinit flavor.
33 #
34 # dmraid= [RAID]
35 # root semi hardware raid device name in /dev/mapper
36 # softraid= [RAID]
37 # root software device name in /dev/mapper
38 # lvmroot= [LVM]
39 # root logical volume name in /dev/mapper
40 # cryptoroot= [CRYPTO]
41 # encrypted root device using luks or loop-aes
42 #
43 ### Special mode used by loram flavor with aufs/overlayfs & squashfs
44 ### incremental/nested rootfs (russian dolls).
45 #
46 # rodev= [LORAM][MERGE]
47 # device (+ optional path) for the read only aufs branch
48 # rwdev= [LORAM][MERGE]
49 # (persistent) device for the r/w aufs branch instead of the ramfs
50 # isofs [LORAM]
51 # do not use squashfs filesystem images, but the cdrom filesystem only
54 fail() {
55 echo -e '\033[70G[ \033[1;3'${1:-1mFailed}'\033[0;39m ]'
56 }
59 quit() {
60 [ -d /mnt$4/etc ] || return
61 grep -q serial /proc/ioports && ! grep -q ttyS /mnt$4/etc/inittab &&
62 echo "ttyS0::respawn:/sbin/getty 115200,38400,9600,4800,2400 ttyS0" \
63 >> /mnt$4/etc/inittab
64 [ -n "$4" ] || grep -q 'tmpfs /mnt tmpfs' /proc/mounts ||
65 busybox mount /mnt -o remount,ro
66 busybox mount --move /run /mnt/${1:-run}
67 cat > /run/init <<EOT
68 $2
69 x=/sbin/switch_root
70 [ -x \$x ] && exec \$x mnt $3 /sbin/init
71 EOT
72 fail 2mDone
73 exit
74 }
77 arg() {
78 grep -q $1 /proc/cmdline
79 }
82 got() {
83 arg $1= && root="$(sed "s/.*$1=\\([^ ]*\\).*/\\1/" </proc/cmdline)"
84 }
87 msg() {
88 echo "Switching / to $1..."
89 }
92 use() {
93 got $1 && msg "$1 $root"
94 }
97 bbmnt() {
98 r=$(busybox blkid 2> /dev/null | grep "$root[:\"]" | sed 's|:.*||;q')
99 r=${r:-$root}
100 if [ ! -b $r ]; then
101 r=${r#/dev/}
102 r=/dev/${r%%/*}
103 fi
104 d=${root#*$r}
105 busybox mount $r $1
106 }
109 mnt() {
110 bbmnt $1 && return
111 w=$(cat /sys/module/usb_storage/parameters/delay_use)
112 w=$((1+${w:-2}))
113 echo "Sleep $w seconds..."
114 sleep $w
115 bbmnt $1
116 }
119 mod() {
120 for i in $@; do
121 echo "Loading module: $i"
122 modprobe $i 2>/dev/null || busybox insmod $(find /lib/modules|sed "/$i.ko/!dq")
123 done
124 }
127 try() {
128 if [ ! -d /mnt/etc ] && got cryptoroot; then
129 mod dm-mod dm-crypt aes-256
130 d=${root#/dev/}
131 l=crypto-$d
132 if cryptsetup isLuks $root 2>/dev/null; then
133 cryptsetup luksOpen $root $l
134 else
135 read -st 60 -p "Pass phrase : " p
136 k=$(echo $p|hashalot -x -n 32 sha512)
137 echo 0 $(cat $(find /sys/block|grep /$d/size))\
138 crypt aes-plain $k 0 $root 0|dmsetup create $l
139 fi
140 busybox mount /dev/mapper/$l /mnt
141 fi
142 got subroot && return
143 got loopfs && return
144 if [ -d /mnt/etc ]; then
145 for i in $@; do
146 cp -a $i /mnt$(dirname $i)
147 done
148 quit
149 fi
150 fail
151 }
154 lvm() {
155 use lvmroot || return
156 mod dm-mod
157 vgscan --ignorelockingfailure
158 vgchange -ay --ignorelockingfailure
159 busybox mount /dev/mapper/$root /mnt
160 try /dev/mapper $1
161 }
164 ldraid() {
165 while read l; do
166 case "$l" in
167 *raid10*) mod raid10;;
168 *raid0*) mod raid0;;
169 *raid1*) mod raid1;;
170 *raid*) mod raid456;;
171 *mirror*) mod dm-mirror;;
172 esac
173 done
174 }
179 if [ "$1" != 'log' ]; then
180 busybox mount -t proc proc /proc
181 busybox mount -t sysfs sys /sys
182 busybox mount -t tmpfs tmpfs /run
183 x=/sbin/init; echo "[ -x $x ] && exec $x" >/run/init
184 $0 log 2>&1 | tee /run/boot.log
185 busybox umount /sys
186 busybox umount /proc
187 . /run/init
188 sh
189 fi
191 for i in /sys/block/*/dev /sys/block/*/*/dev ; do
192 [ -s "$i" ] || continue
193 n=${i%/dev}
194 n=/dev/${n##*/}
195 [ -e $n ] && continue
196 echo "Create $n "
197 mknod $n b $(sed 's/:/ /' < $i)
198 done
200 got modprobe && mod ${root//,/ }
202 [ -d /proc/sys/dev/cdrom ] &&
203 ln -s $(sed '/name/!d;s/.*:[^a-z]*//' /proc/sys/dev/cdrom/info) /dev/cdrom
205 if use dmraid; then
206 dmraid -s | sed '/^type/!ds/.*: *//' | ldraid
207 [ ${root:0:4} = /dev ] ||
208 root=/dev/mapper/$(dmraid -s|sed '/^name/!ds/.*: *//')p${root#p}
209 dmraid -ay
210 fi
211 use raiddev && raiddev="DEVICE ${root//,/ }"
212 use raidmail && raidmail="MAILADDR $root"
213 if use softraid; then
214 for i in 1 2 3 4 5 6 7 8 9; do
215 mdadm -E -s -c partitions > /etc/mdadm.conf
216 grep -qs " $root " /etc/mdadm.conf && break
217 sleep $i
218 done
219 [ "$raiddev" ] && echo "$raiddev" >> /etc/mdadm.conf
220 [ "$raidmail" ] && echo "$raidmail" >> /etc/mdadm.conf
221 grep level=raid /etc/mdadm.conf | ldraid
222 for i in 1 2 3 4 5 6 7 8 9; do
223 sleep $i
224 mdadm -A -s
225 grep -qs "^$(basename $root) : act" /proc/mdstat && break
226 done
227 grep -qs "^$(basename $root) : act" /proc/mdstat ||
228 root=$(awk '/^md/ { print "/dev/" $1; exit }' < /proc/mdstat)
229 lvm /etc/mdadm.conf
230 fi
231 lvm
233 if got mount; then
234 dev=$root
235 x=$(busybox blkid|grep $dev|sed 's/:.*//;q')
236 root=${x:-$dev}
237 [ "$dev" = "$root" ] || dev="$root ($dev)"
238 echo "Mount $dev..."
239 mnt /mnt
240 arg posixovl && echo "And posixovl..." &&
241 mount.posixovl -F /mnt -- -oallow_other -odefault_permissions -osuid
242 fi
244 got loopfs && echo "Into file $root..." &&
245 losetup /dev/loop0 /mnt/$root && busybox mount /dev/loop0 /mnt
246 got bindfs && echo "Bind ${root/,/ to }..." &&
247 busybox mount --bind /mnt/${root%,*} /mnt/${root/,//}
248 arg cryptoroot= && try
249 if use subroot; then
250 cp $(LD_TRACE_LOADED_OBJECTS=1 /lib/ld*.so /usr/sbin/chroot | sed\
251 's|.*=> \(/lib/l[^ ]*\).*|\1|;/^\//!d') /usr/sbin/chroot /run
252 r=$root/run
253 quit $r "export LD_LIBRARY_PATH=$r:/lib"\
254 "$root$(ls /run/ld-*so) $r/chroot $root" "/$root"
255 fi
256 quit
257 msg tmpfs
258 root=100
259 got tmpram
260 r=$root
261 inodes=0
262 got rootfsinodes && inodes=$root
263 root=90%
264 got rootfssize
265 [ $(busybox free|busybox awk '/Mem:/{print int(($4*100)/$3)}') -ge $r ] &&
266 busybox mount -t tmpfs -o size=$root,nr_inodes=$inodes tmpfs /mnt &&
267 for i in $(ls -ar /); do
268 case "$i" in
269 .*|cdrom) ;;
270 mnt|proc|sys) mkdir /mnt/$i;;
271 usr|var|rootfs*) mv /$i /mnt;;
272 *) cp -a /$i /mnt 2>/dev/null && continue
273 fail
274 busybox umount /mnt
275 exit
276 esac
277 done || fail 3mSkipped
278 quit
279 mod squashfs 2>/dev/null || exit
280 msg aufs
281 br=/mnt/.rw
282 mkdir $br /mnt/.wd
283 got rwdev && mnt $br && br=$br$d
284 o=
285 p=
286 c=/mnt/.cdrom
287 if [ -z "$(ls /mnt/rootfs* 2>/dev/null)" ]; then
288 root=/dev/cdrom/fs
289 got rodev
290 mkdir -p $c /mnt$c /mnt/.rw$c
291 mnt $c
292 o="-o 124"
293 p=/.cdrom/boot
294 c=$c$d
295 fi
296 l=0
297 r=
298 got isofs && r=:$c || for i in /mnt$p/rootfs?*.gz; do
299 fs=${i#*root}
300 r=$r:/mnt/.$fs
301 mkdir -p /mnt/.rw/mnt/.$fs /mnt/.$fs
302 losetup $o /dev/loop$l $i
303 busybox mount -o ro -t squashfs /dev/loop$((l++)) /mnt/.$fs
304 done
305 while read type opt; do
306 mod $type && busybox mount -t $type -o $opt none /mnt && break
307 done <<EOT
308 aufs br=$br$r
309 overlayfs workdir=/mnt/.wd${r/:/,lowerdir=},upperdir=$br
310 EOT
311 quit