Famed iphone hacker Comex today revealed on his Twitter account that he is working on speeding up the jailbreaking process for his upcoming iPad 2 jailbreak.
Just one week ago, we composed a publish on a teaser picture comex published on JailbreakMe.com. JailbreakMe.com was utilized to jailbreak iOS 4.0/4.0.1 back in the day. It was based on a userland PDF exploit as well as worked directly from Mobile Safari. All individuals had to do was slide the “slide to jailbreak” bar as well as comex’s tool did the rest.
The teaser directed to PDF-based exploit as well as we effectively predicted that the jailbreaking tool would be for the as-of-yet unjailbroken iPad 2.
We won’t go deep down into describing the intricacies of exactly how comex’s new jailbreaking method is going to work. however the fundamental thing you requirement to understand is that instead of utilizing an older stashing technique, the iPad 2 jailbreak will utilize unionfs.
The quicker speed comes from exactly how uniofs doesn’t include moving pre-installed Apple apps to as well as from different directories in the process of jailbreaking. the time it takes to jailbreak, then, will be dramatically minimized as well as there will be no requirement to restart the gadget when the process is complete.
iPhone Dev team hacker MuscleNerd on Twitter assisted make things much easier to understand:
#1: [comex] is (drastically!) minimizing the time it takes to set up the jailbreak, which usually includes moving great deals of apps around.
#2: the preliminary set up (from the time you state “go” to when you can very first set up something by means of Cydia) will be much much shorter.
#3: [the new technique] likewise vastly simplifies the sandboxing issue (Apple apps don’t requirement to be moved, so they maintain their entitlements)
MuscleNerd likewise hints that the new jailbreak will work on all iOS gadgets from iphone 3GS to iPad 2. This indicates that comex’s tool will work on iphone 3GS, iphone 4, 3rd as well as 4th generation iPod touch, the original iPad as well as iPad 2! The tool will apparently work from iOS 4.2.1 to iOS 4.3.3.
Lastly, here’s comex’s tweet in all its complex entirety:
If you don’t know, the stashing technique jailbreaks have been utilizing for years– Cydia’s “Reorganizing Filesystem”– includes moving some big directories from the little / partition into the big /var partition, then producing symlinks from the original to the new location. This both makes sure that any type of additional stuff put in those directories by bundles will end up in the /var partition, as well as frees up area on the / partition for data produced outside of those directories. However, the process has some issues, like taking permanently to do when you jailbreak (I am a bit fanatical about speed), quite much needing the jailbreak to reboot the system to make sure there aren’t any type of running applications pointing to the old data (ditto about speed, I want a jailbreak to not even need a respring, as in star, however considering that star utilized stashing, some obscure things might cause problems before a reboot), as well as seriously confusing the sandbox code in the kernel (because each application has a sandbox with a listing of enabled filenames, however after the symlink has moved files, the filenames no longer match), needing that code to be patched (it needs to be patched anyway these days since tweaks have to run under the sandboxes of the applications they’re hooking, however depend upon accessing different directories; however it still feels great to get rid of a kludge).
With unionfs (which was saurik’s concept originally), new data are produced in the /var partition, as well as merged with data in the corresponding directories in the / partition, so no data requirement to be moved, no descriptors are invalidated, as well as I believe the sandbox code won’t notice what happened. It likewise opens the door for upgrading the base operating system without destroying the jailbreak data (although perhaps iOS 5 delta updates will already enable this? I haven’t looked at them yet).
I’ve wished to do this considering that actually a year back (that’s the date of the nullfs checkin, considering that I was dumb as well as believed I desired that instead of unionfs), however I never got around to making it work properly.
So, I just hope that I can get rid of the accidents my meddling with unionfs’s code have introduced, as well as repair it for the iPad 2 (my discarded copies of iPad 2 kernels do not include symbols; I composed a little BinDiff-like tool to copy over signs from a kernel for one more device, however it’s not perfect) as well as that there aren’t any type of performance issues.
(via The visitors Eye)
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