slitaz-boot-scripts annotate 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
rev   line source
pascal@276 1 #!/bin/sh
pascal@276 2
paul@351 3 ### cached kernel parameters :
pascal@341 4 #
pascal@341 5 # modprobe=
pascal@341 6 # list of modules to load, example modprobe=r8169,btrfs
pascal@341 7 #
pascal@342 8 ### Frugal mode or live CD : using a root ram disk.
pascal@341 9 #
pascal@341 10 # tmpram= [RAMDISK]
pascal@341 11 # minimum % of free RAM to build the root tmpfs, default 100
pascal@341 12 # a lower value may work, such as 50
pascal@341 13 # rootfssize= [RAMDISK]
pascal@341 14 # size of / regarding the RAM size, default 90%
pascal@407 15 # rootfsinodes= [RAMDISK]
pascal@408 16 # files count of / regarding the RAM size, default 0 (unlimited)
pascal@341 17 #
pascal@342 18 ### Indirect mode ; an initramfs is used to mount root from the hard disk.
pascal@342 19 ### Any rootfs should fit, minimum required is slitaz-base.
pascal@341 20 #
pascal@341 21 # mount= [MOUNT]
pascal@341 22 # device with root loop file or sub directory
pascal@341 23 # posixovl [MOUNT]
pascal@341 24 # use posix attributes on a non posix filesystem (VFAT, NTFS...)
pascal@341 25 # loopfs= [MOUNT]
pascal@341 26 # loop file for root filesystem
pascal@341 27 # subroot= [MOUNT]
pascal@341 28 # sub directory for root filesystem
paul@351 29 # bindfs= [MOUNT] (deprecated)
pascal@341 30 # bind out of root tree part
pascal@341 31 #
pascal@342 32 ### Special disk mode ; needs extra modules/softwares from preinit flavor.
pascal@341 33 #
pascal@341 34 # dmraid= [RAID]
pascal@341 35 # root semi hardware raid device name in /dev/mapper
pascal@341 36 # softraid= [RAID]
pascal@341 37 # root software device name in /dev/mapper
pascal@341 38 # lvmroot= [LVM]
pascal@341 39 # root logical volume name in /dev/mapper
pascal@341 40 # cryptoroot= [CRYPTO]
pascal@341 41 # encrypted root device using luks or loop-aes
pascal@341 42 #
pascal@418 43 ### Special mode used by loram flavor with aufs/overlayfs & squashfs
pascal@342 44 ### incremental/nested rootfs (russian dolls).
pascal@341 45 #
pascal@341 46 # rodev= [LORAM][MERGE]
pascal@341 47 # device (+ optional path) for the read only aufs branch
pascal@341 48 # rwdev= [LORAM][MERGE]
paul@351 49 # (persistent) device for the r/w aufs branch instead of the ramfs
pascal@341 50 # isofs [LORAM]
pascal@341 51 # do not use squashfs filesystem images, but the cdrom filesystem only
pascal@341 52
al@416 53
al@416 54 fail() {
al@416 55 echo -e '\033[70G[ \033[1;3'${1:-1mFailed}'\033[0;39m ]'
pascal@278 56 }
pascal@278 57
al@416 58
al@416 59 quit() {
al@416 60 [ -d /mnt$4/etc ] || return
pascal@430 61 grep -q serial /proc/ioports && ! grep -q ttyS /mnt$4/etc/inittab &&
pascal@430 62 echo "ttyS0::respawn:/sbin/getty 115200,38400,9600,4800,2400 ttyS0" \
pascal@430 63 >> /mnt$4/etc/inittab
pascal@427 64 [ -n "$4" ] || grep -q 'tmpfs /mnt tmpfs' /proc/mounts ||
pascal@427 65 busybox mount /mnt -o remount,ro
al@416 66 busybox mount --move /run /mnt/${1:-run}
al@416 67 cat > /run/init <<EOT
pascal@314 68 $2
pascal@314 69 x=/sbin/switch_root
pascal@314 70 [ -x \$x ] && exec \$x mnt $3 /sbin/init
pascal@276 71 EOT
al@416 72 fail 2mDone
al@416 73 exit
pascal@276 74 }
pascal@276 75
al@416 76
al@416 77 arg() {
al@416 78 grep -q $1 /proc/cmdline
pascal@276 79 }
pascal@276 80
al@416 81
al@416 82 got() {
pascal@447 83 arg $1= && root="$(sed "s/.*$1=\\([^ ]*\\).*/\\1/" </proc/cmdline)"
pascal@276 84 }
pascal@276 85
al@416 86
al@416 87 msg() {
al@416 88 echo "Switching / to $1..."
pascal@276 89 }
pascal@276 90
al@416 91
al@416 92 use() {
al@416 93 got $1 && msg "$1 $root"
pascal@276 94 }
pascal@276 95
al@416 96
pascal@450 97 bbmnt() {
pascal@449 98 r=$(busybox blkid 2> /dev/null | grep "$root[:\"]" | sed 's|:.*||;q')
al@416 99 r=${r:-$root}
al@416 100 if [ ! -b $r ]; then
al@416 101 r=${r#/dev/}
al@416 102 r=/dev/${r%%/*}
al@416 103 fi
al@416 104 d=${root#*$r}
pascal@450 105 busybox mount $r $1
pascal@450 106 }
pascal@450 107
pascal@450 108
pascal@450 109 mnt() {
pascal@450 110 bbmnt $1 && return
al@416 111 w=$(cat /sys/module/usb_storage/parameters/delay_use)
al@416 112 w=$((1+${w:-2}))
pascal@450 113 echo "Sleep $w seconds..."
al@416 114 sleep $w
pascal@450 115 bbmnt $1
pascal@314 116 }
pascal@314 117
al@416 118
al@416 119 mod() {
al@416 120 for i in $@; do
al@416 121 echo "Loading module: $i"
al@416 122 modprobe $i 2>/dev/null || busybox insmod $(find /lib/modules|sed "/$i.ko/!dq")
al@416 123 done
pascal@314 124 }
pascal@314 125
al@416 126
al@416 127 try() {
al@416 128 if [ ! -d /mnt/etc ] && got cryptoroot; then
al@416 129 mod dm-mod dm-crypt aes-256
al@416 130 d=${root#/dev/}
al@416 131 l=crypto-$d
al@416 132 if cryptsetup isLuks $root 2>/dev/null; then
al@416 133 cryptsetup luksOpen $root $l
al@416 134 else
al@416 135 read -st 60 -p "Pass phrase : " p
al@416 136 k=$(echo $p|hashalot -x -n 32 sha512)
al@416 137 echo 0 $(cat $(find /sys/block|grep /$d/size))\
al@416 138 crypt aes-plain $k 0 $root 0|dmsetup create $l
al@416 139 fi
al@416 140 busybox mount /dev/mapper/$l /mnt
pascal@314 141 fi
al@416 142 got subroot && return
al@416 143 got loopfs && return
al@416 144 if [ -d /mnt/etc ]; then
al@416 145 for i in $@; do
al@416 146 cp -a $i /mnt$(dirname $i)
al@416 147 done
al@416 148 quit
al@416 149 fi
al@416 150 fail
pascal@314 151 }
pascal@314 152
al@416 153
al@416 154 lvm() {
al@416 155 use lvmroot || return
al@416 156 mod dm-mod
al@416 157 vgscan --ignorelockingfailure
al@416 158 vgchange -ay --ignorelockingfailure
al@416 159 busybox mount /dev/mapper/$root /mnt
al@416 160 try /dev/mapper $1
pascal@314 161 }
pascal@314 162
al@416 163
al@416 164 ldraid() {
al@416 165 while read l; do
al@416 166 case "$l" in
al@416 167 *raid10*) mod raid10;;
al@416 168 *raid0*) mod raid0;;
al@416 169 *raid1*) mod raid1;;
al@416 170 *raid*) mod raid456;;
al@416 171 *mirror*) mod dm-mirror;;
al@416 172 esac
al@416 173 done
pascal@276 174 }
pascal@276 175
al@416 176
al@416 177
al@416 178
al@416 179 if [ "$1" != 'log' ]; then
al@373 180 busybox mount -t proc proc /proc
al@373 181 busybox mount -t sysfs sys /sys
al@373 182 busybox mount -t tmpfs tmpfs /run
pascal@314 183 x=/sbin/init; echo "[ -x $x ] && exec $x" >/run/init
pascal@314 184 $0 log 2>&1 | tee /run/boot.log
pascal@410 185 busybox umount /sys
al@373 186 busybox umount /proc
pascal@310 187 . /run/init
pascal@314 188 sh
pascal@314 189 fi
al@416 190
pascal@410 191 for i in /sys/block/*/dev /sys/block/*/*/dev ; do
pascal@411 192 [ -s "$i" ] || continue
pascal@410 193 n=${i%/dev}
pascal@410 194 n=/dev/${n##*/}
pascal@410 195 [ -e $n ] && continue
pascal@410 196 echo "Create $n "
pascal@410 197 mknod $n b $(sed 's/:/ /' < $i)
pascal@410 198 done
al@416 199
pascal@341 200 got modprobe && mod ${root//,/ }
al@416 201
pascal@384 202 [ -d /proc/sys/dev/cdrom ] &&
al@393 203 ln -s $(sed '/name/!d;s/.*:[^a-z]*//' /proc/sys/dev/cdrom/info) /dev/cdrom
al@416 204
al@393 205 if use dmraid; then
al@393 206 dmraid -s | sed '/^type/!ds/.*: *//' | ldraid
pascal@314 207 [ ${root:0:4} = /dev ] ||
al@393 208 root=/dev/mapper/$(dmraid -s|sed '/^name/!ds/.*: *//')p${root#p}
pascal@314 209 dmraid -ay
pascal@314 210 fi
pascal@399 211 use raiddev && raiddev="DEVICE ${root//,/ }"
pascal@399 212 use raidmail && raidmail="MAILADDR $root"
al@393 213 if use softraid; then
pascal@418 214 for i in 1 2 3 4 5 6 7 8 9; do
pascal@418 215 mdadm -E -s -c partitions > /etc/mdadm.conf
pascal@418 216 grep -qs " $root " /etc/mdadm.conf && break
pascal@418 217 sleep $i
pascal@418 218 done
pascal@399 219 [ "$raiddev" ] && echo "$raiddev" >> /etc/mdadm.conf
pascal@399 220 [ "$raidmail" ] && echo "$raidmail" >> /etc/mdadm.conf
al@393 221 grep level=raid /etc/mdadm.conf | ldraid
al@393 222 for i in 1 2 3 4 5 6 7 8 9; do
al@393 223 sleep $i
pascal@314 224 mdadm -A -s
pascal@419 225 grep -qs "^$(basename $root) : act" /proc/mdstat && break
pascal@314 226 done
pascal@419 227 grep -qs "^$(basename $root) : act" /proc/mdstat ||
pascal@418 228 root=$(awk '/^md/ { print "/dev/" $1; exit }' < /proc/mdstat)
pascal@323 229 lvm /etc/mdadm.conf
pascal@314 230 fi
pascal@323 231 lvm
al@416 232
al@393 233 if got mount; then
al@393 234 dev=$root
pascal@409 235 x=$(busybox blkid|grep $dev|sed 's/:.*//;q')
pascal@315 236 root=${x:-$dev}
pascal@314 237 [ "$dev" = "$root" ] || dev="$root ($dev)"
pascal@314 238 echo "Mount $dev..."
pascal@314 239 mnt /mnt
pascal@353 240 arg posixovl && echo "And posixovl..." &&
pascal@354 241 mount.posixovl -F /mnt -- -oallow_other -odefault_permissions -osuid
pascal@314 242 fi
al@416 243
pascal@314 244 got loopfs && echo "Into file $root..." &&
al@373 245 losetup /dev/loop0 /mnt/$root && busybox mount /dev/loop0 /mnt
pascal@317 246 got bindfs && echo "Bind ${root/,/ to }..." &&
al@373 247 busybox mount --bind /mnt/${root%,*} /mnt/${root/,//}
pascal@323 248 arg cryptoroot= && try
al@393 249 if use subroot; then
al@393 250 cp $(LD_TRACE_LOADED_OBJECTS=1 /lib/ld*.so /usr/sbin/chroot | sed\
pascal@314 251 's|.*=> \(/lib/l[^ ]*\).*|\1|;/^\//!d') /usr/sbin/chroot /run
pascal@314 252 r=$root/run
pascal@314 253 quit $r "export LD_LIBRARY_PATH=$r:/lib"\
pascal@323 254 "$root$(ls /run/ld-*so) $r/chroot $root" "/$root"
pascal@314 255 fi
pascal@321 256 quit
pascal@314 257 msg tmpfs
pascal@314 258 root=100
pascal@314 259 got tmpram
pascal@314 260 r=$root
pascal@407 261 inodes=0
pascal@405 262 got rootfsinodes && inodes=$root
pascal@314 263 root=90%
pascal@314 264 got rootfssize
pascal@314 265 [ $(busybox free|busybox awk '/Mem:/{print int(($4*100)/$3)}') -ge $r ] &&
pascal@405 266 busybox mount -t tmpfs -o size=$root,nr_inodes=$inodes tmpfs /mnt &&
al@416 267 for i in $(ls -ar /); do
al@416 268 case "$i" in
al@416 269 .*|cdrom) ;;
al@416 270 mnt|proc|sys) mkdir /mnt/$i;;
al@416 271 usr|var|rootfs*) mv /$i /mnt;;
al@416 272 *) cp -a /$i /mnt 2>/dev/null && continue
al@416 273 fail
al@416 274 busybox umount /mnt
al@416 275 exit
al@416 276 esac
al@416 277 done || fail 3mSkipped
pascal@314 278 quit
pascal@323 279 mod squashfs 2>/dev/null || exit
pascal@314 280 msg aufs
pascal@314 281 br=/mnt/.rw
pascal@402 282 mkdir $br /mnt/.wd
pascal@314 283 got rwdev && mnt $br && br=$br$d
pascal@314 284 o=
pascal@314 285 p=
pascal@314 286 c=/mnt/.cdrom
al@393 287 if [ -z "$(ls /mnt/rootfs* 2>/dev/null)" ]; then
al@393 288 root=/dev/cdrom/fs
pascal@314 289 got rodev
pascal@314 290 mkdir -p $c /mnt$c /mnt/.rw$c
pascal@314 291 mnt $c
pascal@314 292 o="-o 124"
pascal@314 293 p=/.cdrom/boot
pascal@318 294 c=$c$d
pascal@276 295 fi
pascal@314 296 l=0
pascal@314 297 r=
pascal@402 298 got isofs && r=:$c || for i in /mnt$p/rootfs?*.gz; do
al@393 299 fs=${i#*root}
pascal@314 300 r=$r:/mnt/.$fs
pascal@314 301 mkdir -p /mnt/.rw/mnt/.$fs /mnt/.$fs
pascal@314 302 losetup $o /dev/loop$l $i
al@373 303 busybox mount -o ro -t squashfs /dev/loop$((l++)) /mnt/.$fs
pascal@276 304 done
pascal@402 305 while read type opt; do
pascal@402 306 mod $type && busybox mount -t $type -o $opt none /mnt && break
pascal@402 307 done <<EOT
pascal@402 308 aufs br=$br$r
pascal@402 309 overlayfs workdir=/mnt/.wd${r/:/,lowerdir=},upperdir=$br
pascal@402 310 EOT
pascal@314 311 quit