• Open Menu Close Menu
  • Apple
  • Shopping Bag
  • Apple
  • Mac
  • iPad
  • iPhone
  • Watch
  • TV
  • Music
  • Support
  • Search apple.com
  • Shopping Bag

Lists

Open Menu Close Menu
  • Terms and Conditions
  • Lists hosted on this site
  • Email the Postmaster
  • Tips for posting to public mailing lists
Re: Using a custom dyld on 10.11
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Using a custom dyld on 10.11

  • Subject: Re: Using a custom dyld on 10.11
  • From: Daniel Peebles <email@hidden>
  • Date: Wed, 06 Jan 2016 15:20:00 -0500
Yeah. That intuitively feels like it should be (not sure if it actually is) permitted assuming that I'm not trying to change any system executables, right? My self-built executable has a custom LC_LOAD_DYLINKER pointing to my self-built dyld (or attempt at one, at least :P you folks don't exactly make it easy!)

Even a much simpler test fails: if I copy /usr/lib/dyld to my home folder and build a new executable pointing at the copy of dyld, it refuses to start. I don't have the error messages handy right now, but can dig them up if that would help.

Thanks,
Dan


On Wed, Jan 6, 2016 at 3:16 PM, Greg Parker <email@hidden> wrote:
Dan, are you trying to run an executable with a custom LC_LOAD_DYLINKER command?


On Jan 6, 2016, at 11:58 AM, Daniel Peebles <email@hidden> wrote:

I understand that, I think. TBC, I'm definitely not trying to overwrite /usr/lib/dyld, which I would expect to be blocked by SIP. Instead, I'm trying to build a new mach-o file that points at a dyld that I'm building myself. Would you expect SIP to block that? I'm seeing some weird behavior that I believe is due to SIP, but I might be misattributing the failure.

Thanks,
Dan


On Wed, Jan 6, 2016 at 2:49 PM, Shantonu Sen <email@hidden> wrote:
Any experimentation with system-level components requires disabling SIP, as well as potentially rebuilding other open source components of OS X.

Shantonu

> On Jan 6, 2016, at 9:15 AM, Daniel Peebles <email@hidden> wrote:
>
> Hi all,
>
> I've been experimenting with building my own dyld but I'm getting the sense that SIP on 10.11 prevents us from running Mach-O binaries that with interpreters set to anything but /usr/lib/dyld. Is that correct? If so, is there a way to turn off that control without turning off system-wide SIP?
>
> Thanks,
> Dan
>
> _______________________________________________
> Do not post admin requests to the list. They will be ignored.
> Darwin-dev mailing list      (email@hidden)
> Help/Unsubscribe/Update your Subscription:
>
> This email sent to email@hidden


 _______________________________________________
Do not post admin requests to the list. They will be ignored.
Darwin-dev mailing list      (email@hidden)
Help/Unsubscribe/Update your Subscription:

This email sent to email@hidden
  • Follow-Ups:
    • Re: Using a custom dyld on 10.11
      • From: Daniel Peebles <email@hidden>
References: 
 >Using a custom dyld on 10.11 (From: Daniel Peebles <email@hidden>)
 >Re: Using a custom dyld on 10.11 (From: Daniel Peebles <email@hidden>)
 >Re: Using a custom dyld on 10.11 (From: Greg Parker <email@hidden>)

  • Prev by Date: Re: Using a custom dyld on 10.11
  • Next by Date: Re: Using a custom dyld on 10.11
  • Previous by thread: Re: Using a custom dyld on 10.11
  • Next by thread: Re: Using a custom dyld on 10.11
  • Index(es):
    • Date
    • Thread