scripts

misc scripts and tools
git clone git://git.2f30.org/scripts.git
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commit c6ec7a35bee2d0cccd35d36dd6f8712d00335907
parent c781aacc1c73aa3acc79b352dc6e1f3585d4321a
Author: oblique <psyberbits@gmail.com>
Date:   Thu Jun 20 15:32:06 +0300

Add `qemu-arm-chroot'

build the chroot environment with:
% qemu-arm-chroot build /path/

chroot to the environment with:
% qemu-arm-chroot /path/

dependencies:
* qemu-user-static
* debootstrap

Diffstat:
qemu-arm-chroot | 47+++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 47 insertions(+), 0 deletions(-)
diff --git a/qemu-arm-chroot b/qemu-arm-chroot @@ -0,0 +1,47 @@ +#!/bin/sh + +debian_arch="armel" +debian_version="jessie" +chroot_shell="bash" + +qemu_user_path="/usr/bin/qemu-arm-static" +binfmt_name="armel" +binfmt_magic='\x7fELF\x01\x01\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x28\x00' +binfmt_mask='\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff\xff' + +usage() { + echo "Usage: $(basename "$0") [build] chroot_directory" + exit 1 +} + +is_mounted() { + mount | grep "$1" > /dev/null 2>&1 +} + +[ $# -lt 1 -o $# -gt 2 ] && usage +[ $# -eq 2 -a ! "$1" = "build" ] && usage + +[ -d /proc/sys/fs/binfmt_misc ] || modprobe binfmt_misc +[ -f /proc/sys/fs/binfmt_misc/register ] || mount binfmt_misc -t binfmt_misc /proc/sys/fs/binfmt_misc +if [ -f "/proc/sys/fs/binfmt_misc/${binfmt_name}" ]; then + qemu_user_path="$(grep interpreter "/proc/sys/fs/binfmt_misc/${binfmt_name}" | awk '{print $2}')" +else + echo ":${binfmt_name}:M::${binfmt_magic}:${binfmt_mask}:${qemu_user_path}:" > /proc/sys/fs/binfmt_misc/register +fi + +if [ $# -eq 2 -a "$1" = "build" ]; then + chroot_path="$2" + mkdir -p "${chroot_path}$(dirname "${qemu_user_path}")" || exit 1 + cp "${qemu_user_path}" "${chroot_path}$(dirname "${qemu_user_path}")" || exit 1 + debootstrap --arch $debian_arch $debian_version "$chroot_path" || exit 1 + exit 0 +fi + +chroot_path="$1" +is_mounted "${chroot_path}/proc" || mount -t proc proc "${chroot_path}/proc" +is_mounted "${chroot_path}/sys" || mount -t sysfs sys "${chroot_path}/sys" +is_mounted "${chroot_path}/dev" || mount -t devtmpfs dev "${chroot_path}/dev" +is_mounted "${chroot_path}/dev/pts" || mount -t devpts pts "${chroot_path}/dev/pts" +cp -L /etc/resolv.conf "${chroot_path}/etc/resolv.conf" + +chroot "${chroot_path}" sh -c ". /etc/profile; cd ~; ${chroot_shell}"