slitaz-boot-scripts view init @ rev 341

init: add modprobe= support
author Pascal Bellard <pascal.bellard@slitaz.org>
date Mon Jan 27 10:09:06 2014 +0000 (2014-01-27)
parents 1f4bcf5a8878
children ca014ab4f073
line source
1 #!/bin/sh
2
3 ### catched kernel parameters :
4 #
5 # modprobe=
6 # list of modules to load, example modprobe=r8169,btrfs
7 #
8 ### Frugal mode or live CD : using 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 #
16 ### Indirect mode an initramfs is used to mount root from the hard disk.
17 ### Any rootfs should fit, minimum required is slitaz-base
18 #
19 # mount= [MOUNT]
20 # device with root loop file or sub directory
21 # posixovl [MOUNT]
22 # use posix attributes on a non posix filesystem (VFAT, NTFS...)
23 # loopfs= [MOUNT]
24 # loop file for root filesystem
25 # subroot= [MOUNT]
26 # sub directory for root filesystem
27 # bindfs= [MOUNT]
28 # bind out of root tree part
29 #
30 ### Special disk driver mode needs extra modules/softwares form preinit flavor.
31 #
32 # dmraid= [RAID]
33 # root semi hardware raid device name in /dev/mapper
34 # softraid= [RAID]
35 # root software device name in /dev/mapper
36 # lvmroot= [LVM]
37 # root logical volume name in /dev/mapper
38 # cryptoroot= [CRYPTO]
39 # encrypted root device using luks or loop-aes
40 #
41 ### Special mode used by loram flavor with aufs & squashfs
42 #
43 # rodev= [LORAM][MERGE]
44 # device (+ optional path) for the read only aufs branch
45 # rwdev= [LORAM][MERGE]
46 # (persitant) device for the r/w aufs branch instead of the ramfs
47 # isofs [LORAM]
48 # do not use squashfs filesystem images, but the cdrom filesystem only
49
50 fail()
51 {
52 echo -e '\033[70G[ \033[1;3'${1:-1mFailed}'\033[0;39m ]'
53 }
54
55 quit()
56 {
57 [ -d /mnt$4/etc ] || return
58 [ -n "$4" ] || mount /mnt -o remount,ro
59 mount --move /run /mnt/${1:-run}
60 cat>/run/init<<EOT
61 $2
62 x=/sbin/switch_root
63 [ -x \$x ] && exec \$x mnt $3 /sbin/init
64 EOT
65 fail 2mDone
66 exit
67 }
68
69 arg()
70 {
71 grep -q $1 /proc/cmdline
72 }
73
74 got()
75 {
76 arg $1= && root="$(sed "s/.*$1=\([^ ]*\).*/\1/" </proc/cmdline)"
77 }
78
79 msg()
80 {
81 echo "Switching / to $1..."
82 }
83
84 use()
85 {
86 got $1 && msg "$1 $root"
87 }
88
89 mnt()
90 {
91 r=${root#/dev/}
92 r=/dev/${r%%/*}
93 d=${root#*$r}
94 mount $r $1 && return
95 w=$(cat /sys/module/usb_storage/parameters/delay_use)
96 w=$((1+${w:-2}))
97 echo -n "Sleep $w seconds..."
98 sleep $w
99 mount $r $1
100 }
101
102 mod()
103 {
104 for i in $@
105 do echo "Loading module: $i"
106 modprobe $i 2>/dev/null || insmod $(find /lib/modules|sed "/$i.ko/!dq")
107 done
108 }
109
110 try()
111 {
112 if [ ! -d /mnt/etc ] && got cryptoroot
113 then mod dm-mod dm-crypt aes-256
114 d=${root#/dev/}
115 l=crypto-$d
116 if cryptsetup isLuks $root 2>/dev/null; then
117 cryptsetup luksOpen $root $l
118 else
119 read -st 60 -p "Pass phrase : " p
120 k=$(echo $p|hashalot -x -n 32 sha512)
121 echo 0 $(cat $(find /sys/block|grep /$d/size))\
122 crypt aes-plain $k 0 $root 0|dmsetup create $l
123 fi
124 mount /dev/mapper/$l /mnt
125 fi
126 got subroot && return
127 got loopfs && return
128 if [ -d /mnt/etc ]
129 then for i in $@; do cp -a $i /mnt$(dirname $i); done
130 quit
131 fi
132 fail
133 }
134
135 lvm()
136 {
137 use lvmroot || return
138 mod dm-mod
139 vgscan --ignorelockingfailure
140 vgchange -ay --ignorelockingfailure
141 mount /dev/mapper/$root /mnt
142 try /dev/mapper $1
143 }
144
145 ldraid()
146 {
147 while read l
148 do case "$l" in
149 *raid10*) mod raid10;;
150 *raid0*) mod raid0;;
151 *raid1*) mod raid1;;
152 *raid*) mod raid456;;
153 *mirror*) mod dm-mirror
154 esac
155 done
156 }
157
158 if [ "$1" != "log" ]
159 then mount -t proc proc /proc
160 mount -t sysfs sys /sys
161 mount -t tmpfs tmpfs /run
162 x=/sbin/init; echo "[ -x $x ] && exec $x" >/run/init
163 $0 log 2>&1 | tee /run/boot.log
164 umount /proc
165 umount /sys
166 . /run/init
167 sh
168 fi
169 got modprobe && mod ${root//,/ }
170 ln -s $(sed '/name/!ds/.*:[^a-z]*//' /proc/sys/dev/cdrom/info) /dev/cdrom
171 if use dmraid
172 then dmraid -s|sed '/^type/!ds/.*: *//'|ldraid
173 [ ${root:0:4} = /dev ] ||
174 root=/dev/mapper/$(dmraid -s|sed '/^name/!ds/.*: *//')p${root#p}
175 dmraid -ay
176 fi
177 if use softraid
178 then mdadm -E -s -c partitions>/etc/mdadm.conf
179 grep -qs " $root " /etc/mdadm.conf ||
180 root=$(awk '/dev.md/{print $2;exit}'</etc/mdadm.conf)
181 grep level=raid /etc/mdadm.conf|ldraid
182 for i in 1 2 3 4 5 6 7 8 9
183 do sleep $i
184 mdadm -A -s
185 grep -qs ': act' /proc/mdstat && break
186 done
187 lvm /etc/mdadm.conf
188 fi
189 lvm
190 if got mount
191 then dev=$root
192 x=$(blkid|grep $dev|sed 's/:.*//;q')
193 root=${x:-$dev}
194 [ "$dev" = "$root" ] || dev="$root ($dev)"
195 echo "Mount $dev..."
196 mnt /mnt
197 arg posixovl && echo "And posixovl..." && mount.posixovl -F /mnt
198 fi
199 got loopfs && echo "Into file $root..." &&
200 losetup /dev/loop0 /mnt/$root && mount /dev/loop0 /mnt
201 got bindfs && echo "Bind ${root/,/ to }..." &&
202 mount --bind /mnt/${root%,*} /mnt/${root/,//}
203 arg cryptoroot= && try
204 if use subroot
205 then cp $(LD_TRACE_LOADED_OBJECTS=1 /lib/ld*.so /usr/sbin/chroot | sed\
206 's|.*=> \(/lib/l[^ ]*\).*|\1|;/^\//!d') /usr/sbin/chroot /run
207 r=$root/run
208 quit $r "export LD_LIBRARY_PATH=$r:/lib"\
209 "$root$(ls /run/ld-*so) $r/chroot $root" "/$root"
210 fi
211 quit
212 msg tmpfs
213 root=100
214 got tmpram
215 r=$root
216 root=90%
217 got rootfssize
218 [ $(busybox free|busybox awk '/Mem:/{print int(($4*100)/$3)}') -ge $r ] &&
219 mount -t tmpfs -o size=$root tmpfs /mnt &&
220 for i in $(ls -ar /)
221 do case "$i" in
222 .*|cdrom) ;;
223 mnt|proc|sys) mkdir /mnt/$i;;
224 usr|var|rootfs*) mv /$i /mnt;;
225 *) cp -a /$i /mnt 2>/dev/null && continue
226 fail
227 umount /mnt
228 exit
229 esac
230 done || fail 3mSkipped
231 quit
232 mod squashfs 2>/dev/null || exit
233 msg aufs
234 br=/mnt/.rw
235 mkdir $br
236 got rwdev && mnt $br && br=$br$d
237 o=
238 p=
239 c=/mnt/.cdrom
240 if [ -z "$(ls /mnt/rootfs* 2>/dev/null)" ]
241 then root=/dev/cdrom/fs
242 got rodev
243 mkdir -p $c /mnt$c /mnt/.rw$c
244 mnt $c
245 o="-o 124"
246 p=/.cdrom/boot
247 c=$c$d
248 fi
249 l=0
250 r=
251 got isofs || for i in /mnt$p/rootfs?*.gz
252 do fs=${i#*root}
253 r=$r:/mnt/.$fs
254 mkdir -p /mnt/.rw/mnt/.$fs /mnt/.$fs
255 losetup $o /dev/loop$l $i
256 mount -o ro -t squashfs /dev/loop$((l++)) /mnt/.$fs
257 done
258 mod aufs
259 mount -t aufs -o br=$br${r:-:$c} none /mnt
260 quit