slitaz-boot-scripts annotate init @ rev 469

init: fix loopfs
author Pascal Bellard <pascal.bellard@slitaz.org>
date Wed May 26 19:47:08 2021 +0000 (2021-05-26)
parents f92ced20dc0d
children 3e887b1a369a
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@464 16 # files count of / regarding the RAM size
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@469 32 # extra= [MOUNT]
pascal@469 33 # extra initrd files list to load
pascal@469 34 #
pascal@342 35 ### Special disk mode ; needs extra modules/softwares from preinit flavor.
pascal@341 36 #
pascal@341 37 # dmraid= [RAID]
pascal@341 38 # root semi hardware raid device name in /dev/mapper
pascal@341 39 # softraid= [RAID]
pascal@341 40 # root software device name in /dev/mapper
pascal@341 41 # lvmroot= [LVM]
pascal@341 42 # root logical volume name in /dev/mapper
pascal@341 43 # cryptoroot= [CRYPTO]
pascal@341 44 # encrypted root device using luks or loop-aes
pascal@341 45 #
pascal@418 46 ### Special mode used by loram flavor with aufs/overlayfs & squashfs
pascal@342 47 ### incremental/nested rootfs (russian dolls).
pascal@341 48 #
pascal@341 49 # rodev= [LORAM][MERGE]
pascal@341 50 # device (+ optional path) for the read only aufs branch
pascal@341 51 # rwdev= [LORAM][MERGE]
paul@351 52 # (persistent) device for the r/w aufs branch instead of the ramfs
pascal@341 53 # isofs [LORAM]
pascal@341 54 # do not use squashfs filesystem images, but the cdrom filesystem only
pascal@341 55
al@416 56
al@416 57 fail() {
al@416 58 echo -e '\033[70G[ \033[1;3'${1:-1mFailed}'\033[0;39m ]'
pascal@278 59 }
pascal@278 60
al@416 61
al@416 62 quit() {
al@416 63 [ -d /mnt$4/etc ] || return
pascal@430 64 grep -q serial /proc/ioports && ! grep -q ttyS /mnt$4/etc/inittab &&
pascal@430 65 echo "ttyS0::respawn:/sbin/getty 115200,38400,9600,4800,2400 ttyS0" \
pascal@430 66 >> /mnt$4/etc/inittab
pascal@427 67 [ -n "$4" ] || grep -q 'tmpfs /mnt tmpfs' /proc/mounts ||
pascal@427 68 busybox mount /mnt -o remount,ro
al@416 69 busybox mount --move /run /mnt/${1:-run}
al@416 70 cat > /run/init <<EOT
pascal@314 71 $2
pascal@314 72 x=/sbin/switch_root
pascal@314 73 [ -x \$x ] && exec \$x mnt $3 /sbin/init
pascal@276 74 EOT
al@416 75 fail 2mDone
al@416 76 exit
pascal@276 77 }
pascal@276 78
al@416 79
al@416 80 arg() {
al@416 81 grep -q $1 /proc/cmdline
pascal@276 82 }
pascal@276 83
al@416 84
al@416 85 got() {
pascal@447 86 arg $1= && root="$(sed "s/.*$1=\\([^ ]*\\).*/\\1/" </proc/cmdline)"
pascal@276 87 }
pascal@276 88
al@416 89
al@416 90 msg() {
al@416 91 echo "Switching / to $1..."
pascal@276 92 }
pascal@276 93
al@416 94
al@416 95 use() {
al@416 96 got $1 && msg "$1 $root"
pascal@276 97 }
pascal@276 98
al@416 99
pascal@450 100 bbmnt() {
pascal@449 101 r=$(busybox blkid 2> /dev/null | grep "$root[:\"]" | sed 's|:.*||;q')
al@416 102 r=${r:-$root}
al@416 103 if [ ! -b $r ]; then
al@416 104 r=${r#/dev/}
al@416 105 r=/dev/${r%%/*}
al@416 106 fi
al@416 107 d=${root#*$r}
pascal@469 108 t=$(busybox blkid 2> /dev/null | grep "$root[:\"]" | sed '/ TYPE=/!d;s/.* TYPE="//;s/".*//')
pascal@469 109 busybox mount $r $1 ${t:+-t $t}
pascal@450 110 }
pascal@450 111
pascal@450 112
pascal@450 113 mnt() {
pascal@450 114 bbmnt $1 && return
al@416 115 w=$(cat /sys/module/usb_storage/parameters/delay_use)
al@416 116 w=$((1+${w:-2}))
pascal@450 117 echo "Sleep $w seconds..."
al@416 118 sleep $w
pascal@450 119 bbmnt $1
pascal@314 120 }
pascal@314 121
al@416 122
al@416 123 mod() {
al@416 124 for i in $@; do
pascal@465 125 grep -q "^$i\\W" /proc/modules && continue
pascal@465 126 grep -q "\\W$i\$" /proc/filesystems && continue
al@416 127 echo "Loading module: $i"
pascal@451 128 modprobe $i 2>/dev/null ||
pascal@464 129 for j in $(find /lib/modules /mnt/.fs*/lib/modules|sed "/\/$i.ko/!d" 2> /dev/null); do
pascal@451 130 busybox insmod $j && break
pascal@451 131 done
al@416 132 done
pascal@314 133 }
pascal@314 134
al@416 135
al@416 136 try() {
al@416 137 if [ ! -d /mnt/etc ] && got cryptoroot; then
al@416 138 mod dm-mod dm-crypt aes-256
al@416 139 d=${root#/dev/}
al@416 140 l=crypto-$d
al@416 141 if cryptsetup isLuks $root 2>/dev/null; then
al@416 142 cryptsetup luksOpen $root $l
al@416 143 else
al@416 144 read -st 60 -p "Pass phrase : " p
al@416 145 k=$(echo $p|hashalot -x -n 32 sha512)
al@416 146 echo 0 $(cat $(find /sys/block|grep /$d/size))\
al@416 147 crypt aes-plain $k 0 $root 0|dmsetup create $l
al@416 148 fi
al@416 149 busybox mount /dev/mapper/$l /mnt
pascal@314 150 fi
al@416 151 got subroot && return
al@416 152 got loopfs && return
al@416 153 if [ -d /mnt/etc ]; then
al@416 154 for i in $@; do
al@416 155 cp -a $i /mnt$(dirname $i)
al@416 156 done
al@416 157 quit
al@416 158 fi
al@416 159 fail
pascal@314 160 }
pascal@314 161
al@416 162
al@416 163 lvm() {
al@416 164 use lvmroot || return
al@416 165 mod dm-mod
al@416 166 vgscan --ignorelockingfailure
al@416 167 vgchange -ay --ignorelockingfailure
al@416 168 busybox mount /dev/mapper/$root /mnt
al@416 169 try /dev/mapper $1
pascal@314 170 }
pascal@314 171
al@416 172
al@416 173 ldraid() {
al@416 174 while read l; do
al@416 175 case "$l" in
al@416 176 *raid10*) mod raid10;;
al@416 177 *raid0*) mod raid0;;
al@416 178 *raid1*) mod raid1;;
al@416 179 *raid*) mod raid456;;
al@416 180 *mirror*) mod dm-mirror;;
al@416 181 esac
al@416 182 done
pascal@276 183 }
pascal@276 184
al@416 185
pascal@469 186 mntiso() {
pascal@469 187 umnt=
pascal@469 188 if got mount; then
pascal@469 189 dev=$root
pascal@469 190 x=$(busybox blkid|grep $dev|sed 's/:.*//;q')
pascal@469 191 root=${x:-$dev}
pascal@469 192 [ "$dev" = "$root" ] || dev="$root ($dev)"
pascal@469 193 echo "Mount $dev..."
pascal@469 194 mnt $1
pascal@469 195 umnt=" $umnt $1"
pascal@469 196 arg posixovl && echo "And posixovl..." && umnt=" $umnt $1" &&
pascal@469 197 mount.posixovl -F $1 -- -oallow_other -odefault_permissions -osuid
pascal@469 198 fi
pascal@469 199 got loopfs && echo "Into file $root..." && umnt=" $umnt $1" &&
pascal@469 200 losetup /dev/loop0 $1/$root && root=/dev/loop0 && mnt $1
pascal@469 201 [ -z "$umnt" ] && mnt $1
pascal@469 202 got bindfs && echo "Bind ${root/,/ to }..." &&
pascal@469 203 busybox mount --bind $1/${root%,*} $1/${root/,//}
pascal@469 204 true
pascal@469 205 }
pascal@469 206
al@416 207
al@416 208
al@416 209 if [ "$1" != 'log' ]; then
al@373 210 busybox mount -t proc proc /proc
al@373 211 busybox mount -t sysfs sys /sys
al@373 212 busybox mount -t tmpfs tmpfs /run
pascal@314 213 x=/sbin/init; echo "[ -x $x ] && exec $x" >/run/init
pascal@314 214 $0 log 2>&1 | tee /run/boot.log
pascal@410 215 busybox umount /sys
al@373 216 busybox umount /proc
pascal@310 217 . /run/init
pascal@314 218 sh
pascal@314 219 fi
al@416 220
pascal@459 221 mdev -s 2> /dev/null ||
pascal@410 222 for i in /sys/block/*/dev /sys/block/*/*/dev ; do
pascal@411 223 [ -s "$i" ] || continue
pascal@410 224 n=${i%/dev}
pascal@410 225 n=/dev/${n##*/}
pascal@410 226 [ -e $n ] && continue
pascal@410 227 echo "Create $n "
pascal@410 228 mknod $n b $(sed 's/:/ /' < $i)
pascal@410 229 done
al@416 230
pascal@341 231 got modprobe && mod ${root//,/ }
al@416 232
pascal@384 233 [ -d /proc/sys/dev/cdrom ] &&
al@393 234 ln -s $(sed '/name/!d;s/.*:[^a-z]*//' /proc/sys/dev/cdrom/info) /dev/cdrom
al@416 235
al@393 236 if use dmraid; then
al@393 237 dmraid -s | sed '/^type/!ds/.*: *//' | ldraid
pascal@314 238 [ ${root:0:4} = /dev ] ||
al@393 239 root=/dev/mapper/$(dmraid -s|sed '/^name/!ds/.*: *//')p${root#p}
pascal@314 240 dmraid -ay
pascal@314 241 fi
pascal@399 242 use raiddev && raiddev="DEVICE ${root//,/ }"
pascal@399 243 use raidmail && raidmail="MAILADDR $root"
al@393 244 if use softraid; then
pascal@418 245 for i in 1 2 3 4 5 6 7 8 9; do
pascal@418 246 mdadm -E -s -c partitions > /etc/mdadm.conf
pascal@418 247 grep -qs " $root " /etc/mdadm.conf && break
pascal@418 248 sleep $i
pascal@418 249 done
pascal@399 250 [ "$raiddev" ] && echo "$raiddev" >> /etc/mdadm.conf
pascal@399 251 [ "$raidmail" ] && echo "$raidmail" >> /etc/mdadm.conf
al@393 252 grep level=raid /etc/mdadm.conf | ldraid
pascal@452 253 udevd --daemon
pascal@452 254 udevadm trigger
pascal@452 255 udevadm settle
al@393 256 for i in 1 2 3 4 5 6 7 8 9; do
al@393 257 sleep $i
pascal@314 258 mdadm -A -s
pascal@452 259 for j in $(sed '/\/md/!d;s|.*md/*\([0-9]*\).*|md\1|' \
pascal@452 260 /etc/mdadm.conf); do
pascal@452 261 grep -qs "$j : act" /proc/mdstat || continue 2
pascal@452 262 done
pascal@452 263 break
pascal@314 264 done
pascal@419 265 grep -qs "^$(basename $root) : act" /proc/mdstat ||
pascal@418 266 root=$(awk '/^md/ { print "/dev/" $1; exit }' < /proc/mdstat)
pascal@323 267 lvm /etc/mdadm.conf
pascal@314 268 fi
pascal@323 269 lvm
al@416 270
pascal@469 271 got extra && extra=$root && mntiso /mnt && for i in ${extra//,/ }; do
pascal@469 272 (unlzma < /mnt/$i 2>/dev/null || zcat /mnt/$i) | cpio -idmu
pascal@469 273 done && for i in $umnt; do umount -l $i; done
pascal@323 274 arg cryptoroot= && try
al@393 275 if use subroot; then
al@393 276 cp $(LD_TRACE_LOADED_OBJECTS=1 /lib/ld*.so /usr/sbin/chroot | sed\
pascal@314 277 's|.*=> \(/lib/l[^ ]*\).*|\1|;/^\//!d') /usr/sbin/chroot /run
pascal@314 278 r=$root/run
pascal@314 279 quit $r "export LD_LIBRARY_PATH=$r:/lib"\
pascal@323 280 "$root$(ls /run/ld-*so) $r/chroot $root" "/$root"
pascal@314 281 fi
pascal@321 282 quit
pascal@314 283 msg tmpfs
pascal@314 284 root=100
pascal@314 285 got tmpram
pascal@314 286 r=$root
pascal@464 287 got rootfsinodes && inodes=",nr_inodes=$root"
pascal@314 288 root=90%
pascal@314 289 got rootfssize
pascal@314 290 [ $(busybox free|busybox awk '/Mem:/{print int(($4*100)/$3)}') -ge $r ] &&
pascal@464 291 busybox mount -t tmpfs -o size=$root$inodes tmpfs /mnt &&
pascal@462 292 export PATH=/mnt/bin:$PATH &&
pascal@462 293 for i in $(ls -a /); do
al@416 294 case "$i" in
al@416 295 .*|cdrom) ;;
pascal@463 296 mnt|proc|run|sys) mkdir /mnt/$i;;
pascal@463 297 dev) cp -a /$i /mnt;;
pascal@463 298 *) mv /$i /mnt; ln -s /mnt/$i / 2> /dev/null ||
pascal@463 299 LD_LIBRARY_PATH=/mnt/lib:/mnt/usr/lib:/lib:/usr/lib \
pascal@463 300 /mnt/lib/ld-linux.so.2 /mnt/bin/ln -s /mnt/$i /;;
al@416 301 esac
al@416 302 done || fail 3mSkipped
pascal@314 303 quit
pascal@465 304 mod squashfs 2>/dev/null || exit
pascal@314 305 msg aufs
pascal@314 306 br=/mnt/.rw
pascal@402 307 mkdir $br /mnt/.wd
pascal@314 308 got rwdev && mnt $br && br=$br$d
pascal@314 309 o=
pascal@314 310 p=
pascal@314 311 c=/mnt/.cdrom
al@393 312 if [ -z "$(ls /mnt/rootfs* 2>/dev/null)" ]; then
al@393 313 root=/dev/cdrom/fs
pascal@314 314 got rodev
pascal@314 315 mkdir -p $c /mnt$c /mnt/.rw$c
pascal@469 316 mntiso $c
pascal@314 317 o="-o 124"
pascal@314 318 p=/.cdrom/boot
pascal@318 319 c=$c$d
pascal@276 320 fi
pascal@314 321 l=0
pascal@314 322 r=
pascal@402 323 got isofs && r=:$c || for i in /mnt$p/rootfs?*.gz; do
al@393 324 fs=${i#*root}
pascal@314 325 r=$r:/mnt/.$fs
pascal@314 326 mkdir -p /mnt/.rw/mnt/.$fs /mnt/.$fs
pascal@469 327 losetup $o /dev/loop$((++l)) $i
pascal@469 328 busybox mount -o ro -t squashfs /dev/loop$l /mnt/.$fs
pascal@276 329 done
pascal@402 330 while read type opt; do
pascal@465 331 mod $type || continue
pascal@464 332 busybox mount -t $type -o $opt none /mnt && break
pascal@402 333 done <<EOT
pascal@402 334 aufs br=$br$r
pascal@402 335 overlayfs workdir=/mnt/.wd${r/:/,lowerdir=},upperdir=$br
pascal@402 336 EOT
pascal@314 337 quit