Obtain kernel source from ISO file

A

arsaKasra

I'm running FreeBSD release 9.2 as guest OS on Virtualbox in Windows. I need to "install the emulators/virtualbox-ose-additions package" as it says in the website manual . When I try to do that I get an error saying that virtualbox-ose-additions requires kernel source. Now I only have the ISO file available, and I can't write it to a DVD, and actually wouldn't really like to do so. And also I prefer not having to download them, if I ever have that option as a solution. So, is there a simple workaround using only the ISO file? I already mentioned I am running FreeBSD on VirtualBox, in case that make any difference.
 
Just mount the ISO on the 'virtual' CD/DVD drive VirtualBox gives to your guest. Mount the CD in FreeBSD: mount /cdrom. Then simply untar /cdrom/usr/freebsd-dist/src.txz.

You can also 'mount' the ISO on an md(4) device inside FreeBSD: mount -a -t vnode -f /path/to/ISO and mount whatever md(4) device gets created on /cdrom or /mnt.
 
Thank you, but, to start with, mount /cdrom won't work, I get
Code: 
 mount: cdrom: unknown special file or file system
That aside, I managed to copy the src.txz to disk but when I tried to untar it, I got the error
Code: 
Lzma library error: Corrupted input data
I'm not sure if it's possible that the files on the ISO are corrupted while I successfully installed FreeBSD using it. Anyway, I just removed the machine to reinstall it hoping that there will be an option to copy the source files during the install. But in case that doesn't work, and if I ever managed to get a working copy of the extracted src.txz, what am I supposed to do with it?
 
To skip the process with the loopback mount (maybe you are a "user" and can not do that), BSD tar is able to extract .iso files as if they were tar archives.
 
arsaKasra said:
That aside, I managed to copy the src.txz to disk but when I tried to untar it, I got the error
Code: 
Lzma library error: Corrupted input data
Click to expand...
What command did you try to unpack the archive?

My guess is that you forgot to use the -J ("--xz") option. These archives aren't common tarballs (which are usually compressed with either gzip or bzip2) but instead it uses xz (see the xz(1) manualpage for more information on that).
 
ShelLuser said:
What command did you try to unpack the archive?

My guess is that you forgot to use the -J ("--xz") option. These archives aren't common tarballs (which are usually compressed with either gzip or bzip2) but instead it uses xz (see the xz(1) manualpage for more information on that).
Click to expand...

Well, honestly I can't remember if I did use the J option, but when I tried reinstalling with sources included, I again got an error about the src.txz being corrupted, apart from that, I tried extracting with 7-zip in Windows, same result. Whatever the matter was with that, I have downloaded the file and it worked fine.
 
You must log in or register to reply here.
Back
Top