slitaz-boot-scripts view init @ rev 465

init: do not load module twice
author Pascal Bellard <pascal.bellard@slitaz.org>
date Sat Aug 15 10:56:01 2020 +0000 (2020-08-15)
parents fc5989c03379
children 370e75b1a014
line source
1 #!/bin/sh
2
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 # 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
52
53
54 fail() {
55 echo -e '\033[70G[ \033[1;3'${1:-1mFailed}'\033[0;39m ]'
56 }
57
58
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 }
75
76
77 arg() {
78 grep -q $1 /proc/cmdline
79 }
80
81
82 got() {
83 arg $1= && root="$(sed "s/.*$1=\\([^ ]*\\).*/\\1/" </proc/cmdline)"
84 }
85
86
87 msg() {
88 echo "Switching / to $1..."
89 }
90
91
92 use() {
93 got $1 && msg "$1 $root"
94 }
95
96
97 bbmnt() {
98 r=$(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 }
107
108
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 }
117
118
119 mod() {
120 for i in $@; do
121 grep -q "^$i\\W" /proc/modules && continue
122 grep -q "\\W$i\$" /proc/filesystems && continue
123 echo "Loading module: $i"
124 modprobe $i 2>/dev/null ||
125 for j in $(find /lib/modules /mnt/.fs*/lib/modules|sed "/\/$i.ko/!d" 2> /dev/null); do
126 busybox insmod $j && break
127 done
128 done
129 }
130
131
132 try() {
133 if [ ! -d /mnt/etc ] && got cryptoroot; then
134 mod dm-mod dm-crypt aes-256
135 d=${root#/dev/}
136 l=crypto-$d
137 if cryptsetup isLuks $root 2>/dev/null; then
138 cryptsetup luksOpen $root $l
139 else
140 read -st 60 -p "Pass phrase : " p
141 k=$(echo $p|hashalot -x -n 32 sha512)
142 echo 0 $(cat $(find /sys/block|grep /$d/size))\
143 crypt aes-plain $k 0 $root 0|dmsetup create $l
144 fi
145 busybox mount /dev/mapper/$l /mnt
146 fi
147 got subroot && return
148 got loopfs && return
149 if [ -d /mnt/etc ]; then
150 for i in $@; do
151 cp -a $i /mnt$(dirname $i)
152 done
153 quit
154 fi
155 fail
156 }
157
158
159 lvm() {
160 use lvmroot || return
161 mod dm-mod
162 vgscan --ignorelockingfailure
163 vgchange -ay --ignorelockingfailure
164 busybox mount /dev/mapper/$root /mnt
165 try /dev/mapper $1
166 }
167
168
169 ldraid() {
170 while read l; do
171 case "$l" in
172 *raid10*) mod raid10;;
173 *raid0*) mod raid0;;
174 *raid1*) mod raid1;;
175 *raid*) mod raid456;;
176 *mirror*) mod dm-mirror;;
177 esac
178 done
179 }
180
181
182
183
184 if [ "$1" != 'log' ]; then
185 busybox mount -t proc proc /proc
186 busybox mount -t sysfs sys /sys
187 busybox mount -t tmpfs tmpfs /run
188 x=/sbin/init; echo "[ -x $x ] && exec $x" >/run/init
189 $0 log 2>&1 | tee /run/boot.log
190 busybox umount /sys
191 busybox umount /proc
192 . /run/init
193 sh
194 fi
195
196 mdev -s 2> /dev/null ||
197 for i in /sys/block/*/dev /sys/block/*/*/dev ; do
198 [ -s "$i" ] || continue
199 n=${i%/dev}
200 n=/dev/${n##*/}
201 [ -e $n ] && continue
202 echo "Create $n "
203 mknod $n b $(sed 's/:/ /' < $i)
204 done
205
206 got modprobe && mod ${root//,/ }
207
208 [ -d /proc/sys/dev/cdrom ] &&
209 ln -s $(sed '/name/!d;s/.*:[^a-z]*//' /proc/sys/dev/cdrom/info) /dev/cdrom
210
211 if use dmraid; then
212 dmraid -s | sed '/^type/!ds/.*: *//' | ldraid
213 [ ${root:0:4} = /dev ] ||
214 root=/dev/mapper/$(dmraid -s|sed '/^name/!ds/.*: *//')p${root#p}
215 dmraid -ay
216 fi
217 use raiddev && raiddev="DEVICE ${root//,/ }"
218 use raidmail && raidmail="MAILADDR $root"
219 if use softraid; then
220 for i in 1 2 3 4 5 6 7 8 9; do
221 mdadm -E -s -c partitions > /etc/mdadm.conf
222 grep -qs " $root " /etc/mdadm.conf && break
223 sleep $i
224 done
225 [ "$raiddev" ] && echo "$raiddev" >> /etc/mdadm.conf
226 [ "$raidmail" ] && echo "$raidmail" >> /etc/mdadm.conf
227 grep level=raid /etc/mdadm.conf | ldraid
228 udevd --daemon
229 udevadm trigger
230 udevadm settle
231 for i in 1 2 3 4 5 6 7 8 9; do
232 sleep $i
233 mdadm -A -s
234 for j in $(sed '/\/md/!d;s|.*md/*\([0-9]*\).*|md\1|' \
235 /etc/mdadm.conf); do
236 grep -qs "$j : act" /proc/mdstat || continue 2
237 done
238 break
239 done
240 grep -qs "^$(basename $root) : act" /proc/mdstat ||
241 root=$(awk '/^md/ { print "/dev/" $1; exit }' < /proc/mdstat)
242 lvm /etc/mdadm.conf
243 fi
244 lvm
245
246 if got mount; then
247 dev=$root
248 x=$(busybox blkid|grep $dev|sed 's/:.*//;q')
249 root=${x:-$dev}
250 [ "$dev" = "$root" ] || dev="$root ($dev)"
251 echo "Mount $dev..."
252 mnt /mnt
253 arg posixovl && echo "And posixovl..." &&
254 mount.posixovl -F /mnt -- -oallow_other -odefault_permissions -osuid
255 fi
256
257 got loopfs && echo "Into file $root..." &&
258 losetup /dev/loop0 /mnt/$root && busybox mount /dev/loop0 /mnt
259 got bindfs && echo "Bind ${root/,/ to }..." &&
260 busybox mount --bind /mnt/${root%,*} /mnt/${root/,//}
261 arg cryptoroot= && try
262 if use subroot; then
263 cp $(LD_TRACE_LOADED_OBJECTS=1 /lib/ld*.so /usr/sbin/chroot | sed\
264 's|.*=> \(/lib/l[^ ]*\).*|\1|;/^\//!d') /usr/sbin/chroot /run
265 r=$root/run
266 quit $r "export LD_LIBRARY_PATH=$r:/lib"\
267 "$root$(ls /run/ld-*so) $r/chroot $root" "/$root"
268 fi
269 quit
270 msg tmpfs
271 root=100
272 got tmpram
273 r=$root
274 got rootfsinodes && inodes=",nr_inodes=$root"
275 root=90%
276 got rootfssize
277 [ $(busybox free|busybox awk '/Mem:/{print int(($4*100)/$3)}') -ge $r ] &&
278 busybox mount -t tmpfs -o size=$root$inodes tmpfs /mnt &&
279 export PATH=/mnt/bin:$PATH &&
280 for i in $(ls -a /); do
281 case "$i" in
282 .*|cdrom) ;;
283 mnt|proc|run|sys) mkdir /mnt/$i;;
284 dev) cp -a /$i /mnt;;
285 *) mv /$i /mnt; ln -s /mnt/$i / 2> /dev/null ||
286 LD_LIBRARY_PATH=/mnt/lib:/mnt/usr/lib:/lib:/usr/lib \
287 /mnt/lib/ld-linux.so.2 /mnt/bin/ln -s /mnt/$i /;;
288 esac
289 done || fail 3mSkipped
290 quit
291 mod squashfs 2>/dev/null || exit
292 msg aufs
293 br=/mnt/.rw
294 mkdir $br /mnt/.wd
295 got rwdev && mnt $br && br=$br$d
296 o=
297 p=
298 c=/mnt/.cdrom
299 if [ -z "$(ls /mnt/rootfs* 2>/dev/null)" ]; then
300 root=/dev/cdrom/fs
301 got rodev
302 mkdir -p $c /mnt$c /mnt/.rw$c
303 mnt $c
304 o="-o 124"
305 p=/.cdrom/boot
306 c=$c$d
307 fi
308 l=0
309 r=
310 got isofs && r=:$c || for i in /mnt$p/rootfs?*.gz; do
311 fs=${i#*root}
312 r=$r:/mnt/.$fs
313 mkdir -p /mnt/.rw/mnt/.$fs /mnt/.$fs
314 losetup $o /dev/loop$l $i
315 busybox mount -o ro -t squashfs /dev/loop$((l++)) /mnt/.$fs
316 done
317 while read type opt; do
318 mod $type || continue
319 busybox mount -t $type -o $opt none /mnt && break
320 done <<EOT
321 aufs br=$br$r
322 overlayfs workdir=/mnt/.wd${r/:/,lowerdir=},upperdir=$br
323 EOT
324 quit