Getting a wider set of development tools on the phone
So, I've been playing around with QuickSSHd and one thing I noticed is there aren't many tools available in the shell. I put an arm build of Fedora on the phone, and now I have access to strace, gdb, gcc, etc..
I figured I'd post my steps here in case anyone else is interested.
1) First thing I did was root the phone with the Unrevoked app.
2) Then I bought a 16 gb microsd card so I wouldn't have to split the 8gb card that came with the phone
3) I partitioned the new card on my linux box using fdisk. I did two partitions, the first a FAT partition and the second a linux one. It was something like:
# fdisk /dev/sdb
# /sbin/mkfs.vfat /dev/sdb1
# /sbin/mkfs.ext3 /dev/sdb2
4) One that was done, i mounted the ext3 partition and grabbed this prebuilt fedora chroot tarball:
and untarred it into a directory i called "fedora" on the ext3 partition.
5) I then turned off my phone, pulled out the battery and swapped the existing sdcard with my newly formatted one, put the phone back together and booted it up. It took a long time to boot after this and in the notification panel it said it was "preparing the sdcard"
6) Then i started QuickSSHd back up and ssh'd to the machine as root
7) next i ran "busybox sh" to get a better shell than whatever was started before
8) then I created a shell script called f12.sh that looked like this:
mkdir -p mnt/fedora
mkdir -p dev
ln -sf /dev/block/vold/179\:2 dev/sdcard2
grep -q dev/sdcard2 /proc/mounts || mount dev/sdcard2 mnt/fedora
grep -q rootfs-f12/dev /proc/mounts || mount --bind /dev mnt/fedora/rootfs-f12/dev
grep -q rootfs-f12/sys /proc/mounts || mount --bind /sys mnt/fedora/rootfs-f12/sys
grep -q rootfs-f12/proc /proc/mounts || mount --bind /proc mnt/fedora/rootfs-f12/proc
grep -q rootfs-f12/tmp /proc/mounts || mount -ttmpfs tmpfs mnt/fedora/rootfs-f12/tmp
mkdir -p mnt/fedora/rootfs-f12/mnt/system
mkdir -p mnt/fedora/rootfs-f12/mnt/data
grep -q rootfs-f12/mnt/system /proc/mounts || mount --bind /system mnt/fedora/rootfs-f12/mnt/system
grep -q rootfs-f12/mnt/data /proc/mounts || mount --bind /system mnt/fedora/rootfs-f12/mnt/data
mkdir -p mnt/fedora/rootfs-f12/debug
grep -q rootfs-f12/debug /proc/mounts || mount -tdebugfs debugfs mnt/fedora/rootfs-f12/debug
lib/ld-linux.so.3 usr/sbin/chroot . bin/bash --login
I used vi for this, you could use cat > f12.sh instead.
One weird part of this is the /dev/block/vold/179\:2 symlink. The busybox version of mount apparently can't grok source devices with colons in them. The symlink is just to rename it to something that mount can understand. I imagine the 179 part varies from system to system.
9) Then i ran sh f12.sh which put me in a fedora chroot.
10) I notice the rpm database is a little screwy in the chroot so I ran
# rm -f /var/lib/rpm/__db*
# rpm --rebuilddb
11) At this point I could yum:
# yum -y install strace gdb screen gcc vim-enhanced powertop
Some useful things:
- The kernel debug filesystem is in /debug
- Parts of the phone OS are available in /mnt/data and /mnt/system