121 lines
4.2 KiB
Bash
Executable File
121 lines
4.2 KiB
Bash
Executable File
#!/bin/bash
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#/**
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#@brief Descomprime el fichero ogclient.sqfs en ogclient.img con un formato donde podemos escribir.
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#@param none
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#@note Copiado del wiki: http://opengnsys.es/wiki/ClienteInitrdDSGenerarlo
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#@note para "entrar" en ogclient: schroot -c ogclient.img o mount ogclient.img ogclientmount -o loop,offset=32256
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#@exeption 1 No es usuario root
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#@exeption 2 No existe el fichero ogclient.sqfs
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#@date 2013-11.27
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#*/
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PROG="$(basename $0)"
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# Mostrar ayuda si se solicita.
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if [ "$*" == "help" ]; then
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echo -e "$PROG: Descomprime el fichero ogclient.sqfs en ogclient.img con un formato donde podemos escribir. \n" \
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" Uso: $PROG (sin parametros)"
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exit 0
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fi
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if [ "$USER" != "root" ]; then
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echo "$PROG: Error: solo ejecutable por root" >&2
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exit 1
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fi
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DATE=$(date +%y-%m-%d)
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OPENGNSYS=${OPENGNSYS:-"/opt/opengnsys"}
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OGCLIENTBASEDIR=$OPENGNSYS/tftpboot/ogclient/;
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OGCLIENTSQFS=${OGCLIENTBASEDIR}ogclient.sqfs
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OGCLIENTFILE=${OGCLIENTBASEDIR}ogclient.img;
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OGCLIENTMOUNT=${OGCLIENTBASEDIR}ogclientmount;
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OGCLIENTSIZEMB=2100;
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OGCLIENTLABEL=ogClient;
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# Comprobamos que existe el cliente .sqfs
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! [ -f $OGCLIENTSQFS ] && echo "No existe $OGCLIENTSQFS" && exit 3
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# instalamos los paquetes necesarios.
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echo "Si no existen, instalamos los paquetes necesarios: squashfs-tools schroot."
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if ! which schroot unsquashfs 2>&1 >/dev/null; then
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apt-get update
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apt-get -y install squashfs-tools schroot
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fi
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# Creamos el archivo.
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echo -e "\nCreamos el archivo."
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echo dd if=/dev/zero of=$OGCLIENTFILE bs=1048576 count=$OGCLIENTSIZEMB;
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dd if=/dev/zero of=$OGCLIENTFILE bs=1048576 count=$OGCLIENTSIZEMB;
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DISKLOOP=$(losetup -f);
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losetup $DISKLOOP $OGCLIENTFILE;
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echo -e "n\np\n1\n\n\nt\n83\nw" | fdisk $DISKLOOP;
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losetup -d $DISKLOOP ;
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# Creamos el sistema de ficheros.
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echo "Creamos el sistema de ficheros."
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echo "mkfs.ext4 -b 4096 -L $OGCLIENTLABEL $PARTLOOP"
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PARTLOOP=$(losetup -f);
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losetup -o 32256 $PARTLOOP $OGCLIENTFILE && mkfs.ext4 -b 4096 -L $OGCLIENTLABEL $PARTLOOP;
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losetup -d $PARTLOOP ;
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# Descomprimimos el ogclient.sqfs en el sistema de ficheros.
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mkdir -p $OGCLIENTMOUNT;
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echo "Descomprimimos el ogclient.sqfs en el sistema de ficheros."
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mount | grep $OGCLIENTMOUNT || mount $OGCLIENTFILE $OGCLIENTMOUNT -o loop,offset=32256;
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echo "unsquashfs -d ${OGCLIENTMOUNT}/ -f $OGCLIENTSQFS"
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unsquashfs -d ${OGCLIENTMOUNT}/ -f $OGCLIENTSQFS
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umount $OGCLIENTMOUNT;
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# Creamos los archivos de configuracion de schroot.
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echo "Creamos los archivos de configuracion de schroot."
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cp /etc/schroot/schroot.conf /etc/schroot/schroot.conf.$DATE
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cat << EOF > /etc/schroot/schroot.conf
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[ogclient.img]
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type=loopback
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file=${OGCLIENTBASEDIR}ogclient.img
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description=ogclient ubuntu luc IMGi
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#priority=1
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users=root
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groups=root
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root-groups=root
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mount-options=-o offset=32256
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root-users=root
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#[DIRogclient]
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#type=directory
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#directory=${OGCLIENTBASEDIR}ogclientmount
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#description=ogclient ubuntu lucid DIR
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#priority=2
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#users=root
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#groups=root
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#root-groups=root
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#root-users=root
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EOF
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cp /etc/schroot/mount-defaults /etc/schroot/mount-defaults.$DATE
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cat << EOF > /etc/schroot/mount-defaults
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# mount.defaults: static file system information for chroots.
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# Note that the mount point will be prefixed by the chroot path
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# (CHROOT_PATH)
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#
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# <file system> <mount point> <type> <options> <dump> <pass>
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proc /proc proc defaults 0 0
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#procbususb /proc/bus/usb usbfs defaults 0 0
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/dev /dev none rw,bind 0 0
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/dev/pts /dev/pts none rw,bind 0 0
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/dev/shm /dev/shm none rw,bind 0 0
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#/home /home none rw,bind 0 0
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/tmp /tmp none rw,bind 0 0
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EOF
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# Si existen dispositivos loop los eliminamos.
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echo "Si existen dispositivos loop los eliminamos."
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LOOPDEVICES=$(losetup -a|grep $OGCLIENTFILE |cut -d: -f1)
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for DEVICE in $LOOPDEVICES
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do
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echo "losetup -d $DEVICE"
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losetup -d $DEVICE
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done
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echo -e "Para \"entrar\" en ogclient: \n \t schroot -c ogclient.img o \n \t mount ogclient.img ogclientmount -o loop,offset=32256"
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echo "El servicio schroot montará el cliente automaticamente, si no queremos que pase hay que apagarlo."
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