Ok I could chroot successfuly.
[1]+ Segmentation fault chroot /filesys /sbin/init
The result is the same as when I init ed with the run.sh script.
Any suggestion?
On Dec 11, 7:26 pm, Manav Gautama <[EMAIL PROTECTED]> wrote:
> On Thu, 2008-12-11 at 02:23 -0800, FrancoisM wrote:
> > Oh .... did I miss something?
>
> > [EMAIL PROTECTED]:/filesys# chroot& /filesys /sbin/init
>
> chroot /filesys /sbin/init &
>
> > [2] 993
> > -bash: /filesys: is a directory
> > [1] Exit 1 chroot
> > chroot: too few arguments
> > Try `chroot --help' for more information.
>
> > There is no problem with the architecture ( CPU: ARM926EJ-S [41069265]
> > revision 5 (ARMv5TEJ) ).
> > Seems like dmesg displays the same lines as when you boot the kernel,
> > but in my case when I directly boot on the Android file system,
> > nothing is displayed... init always crashes and if I try to boot
> > without the init=/init defined then I get a kernel panic.
>
> > How may I check the loader?
>
> > Thanks for your fast replies and advices. I really appreciate
>
> > Francois Minaud
>
> > On Dec 11, 6:45 pm, Sean McNeil <[EMAIL PROTECTED]> wrote:
> > > You could try to kick android off in the background by appending an "&"
> > > to the chroot command. Then you could check for messages with dmesg.
> > > Sounds like you may be having linker issues. The compiler should be OK,
> > > but I suspect you aren't compiling for the right architecture. Was this
> > > an s3c2410? armv4t? You won't get very far if you compile with the
> > > default armv5te architecture for that chip.
>
> > > FrancoisM wrote:
> > > > Very interesting reading. As I read this I think it's a bit risky to
> > > > have 2 filesystems coexisting. (and even after chrooting it wouldn't
> > > > init).
> > > > So I tried to boot only on the Android filesystem, but it won't boot,
> > > > hanging after :
>
> > > > FS: Mounted root (nfs
> > > > filesystem).
> > > > VFS: Mounted root (nfs
> > > > filesystem).
> > > > <6>Freeing init memory:
> > > > 124K
> > > > Freeing init memory: 124K
>
> > > > This is why I wanted to mix my davinci fs which I can boot on and the
> > > > Android filesystem.
>
> > > > Any way to see what's going down there as the console doesn't display
> > > > any error message, debugging looks impossible.
>
> > > > Some possibles issues : i used arm-crosstool-linux-gnueabi toolchain
> > > > to build the Android source code and compile the kernel for my board,
> > > > gcc version is 4.1.0 (got some warnings during kernel compilation).
>
> > > > Francois Minaud
>
> > > > On Dec 11, 5:58 pm, Sean McNeil <[EMAIL PROTECTED]> wrote:
>
> > > >> Android uses a completely different linker/loader. You cannot run
> > > >> Android directly from your davinci filesystem. Very important shared
> > > >> libraries will not be in the correct place on the filesystem. Just
> > > >> changing env variables is not good enough. In this setup, you are going
> > > >> to have to use chroot:
>
> > > >> chroot /filesystem /init (or /sbin/init for me)
>
> > > >> Read up on chroot. It essentially will make /filesystem the / directory
> > > >> for whatever command you invoke.
>
> > > >> FrancoisM wrote:
>
> > > >>> Thanks for your reply. I am not sure I got what you mean.
>
> > > >>> I have a basic davinci filesystem in which i pasted the Android
> > > >>> filesystem ( davinci filesystem is / and Android fs is in /
> > > >>> filesystem/ ). I did that because if i directly boot the board with
> > > >>> the Android filesystem, I don't come up with anything but the
> > > >>> lowmem_shrink() display messages.
>
> > > >>> Is the missing libraries result from a linker problem? I am pretty
> > > >>> much a beginner and feel lost. Some more clues would be welcome.
>
> > > >>> Thanks a lot,
> > > >>> Francois Minaud
>
> > > >>> I tried the changes you suggested but pretty akwardly I guess as I
> > > >>> come up with the same strace result.
>
> > > >>> On Dec 11, 5:08 pm, Sean McNeil <[EMAIL PROTECTED]> wrote:
>
> > > >>>> I don't think it is going to work that way. You have a different
> > > >>>> linker/loader and all that which has to be in specific directories
> > > >>>> from
> > > >>>> root. I think you'll have to do a chroot. That is what I do:
>
> > > >>>> chroot /root /sbin/init
>
> > > >>>> (I've moved init to the more appropriate /sbin directory).
>
> > > >>>> Either that, or you'll have to mount your nfs as /.
>
> > > >>>> FrancoisM wrote:
>
> > > >>>>> Alright, I got some progress.
> > > >>>>> My previous error comes from my ... "wild" patching. Later I did it
> > > >>>>> again smoothly using Meld which is a software I recommend to all of
> > > >>>>> you guys.
>
> > > >>>>> So I got a kernel which boots and is supposed to work with my
> > > >>>>> Android
> > > >>>>> filesystem, I work with NFS.
>
> > > >>>>> I could boot with a basic filesystem (I don't init Android on boot)
> > > >>>>> and when I try to launch "init" here is what I get :
>
> > > >>>>> my run.sh is :
> > > >>>>> #!/bin/sh
> > > >>>>> chmod 777 /filesys/data
> > > >>>>> /init
>
> > > >>>>> export PATH=sbin:/filesys/system/sbin:/filesys/system/bin:/filesys/
> > > >>>>> system/xbin
> > > >>>>> export LD_LIBRARY_PATH=/filesys/system/lib
> > > >>>>> export ANDROID_BOOTLOGO=1
> > > >>>>> export ANDROID_ROOT=/filesys/system
> > > >>>>> export ANDROID_ASSETS=/filesys/system/app
> > > >>>>> export ANDROID_DATA=/filesys/data
> > > >>>>> #export EXTERNAL_STORAGE /sdcard
> > > >>>>> export BOOTCLASSPATH=/filesys/system/framework/core.jar:/filesys/
> > > >>>>> system/framework/ext.jar:/filesys/system/framework/framework.jar:/
> > > >>>>> filesys/framework/android.policy.jar:/filesys/framework/services.jar
>
> > > >>>>> the strace is :
>
> > > >>>>> [EMAIL PROTECTED]:/filesys# strace -ff -F -s 200 ./run.sh
> > > >>>>> execve("./run.sh", ["./run.sh"], [/* 14 vars */]) = 0
> > > >>>>> uname({sys="Linux", node="davinci-francois", ...}) = 0
> > > >>>>> brk(0) = 0xab000
> > > >>>>> access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or
> > > >>>>> directory)
> > > >>>>> open("/etc/ld.so.cache", O_RDONLY) = -1 ENOENT (No such file or
> > > >>>>> directory)
> > > >>>>> open("/lib/tls/v5l/fast-mult/half/libncurses.so.5", O_RDONLY) = -1
> > > >>>>> ENOENT (No such file or directory)
> > > >>>>> stat64("/lib/tls/v5l/fast-mult/half", 0xbeb6d1a8) = -1 ENOENT (No
> > > >>>>> such
> > > >>>>> file or directory)
> > > >>>>> open("/lib/tls/v5l/fast-mult/libncurses.so.5", O_RDONLY) = -1 ENOENT
> > > >>>>> (No such file or directory)
> > > >>>>> stat64("/lib/tls/v5l/fast-mult", 0xbeb6d1a8) = -1 ENOENT (No such
> > > >>>>> file
> > > >>>>> or directory)
> > > >>>>> open("/lib/tls/v5l/half/libncurses.so.5", O_RDONLY) = -1 ENOENT (No
> > > >>>>> such file or directory)
> > > >>>>> stat64("/lib/tls/v5l/half", 0xbeb6d1a8) = -1 ENOENT (No such file or
> > > >>>>> directory)
> > > >>>>> open("/lib/tls/v5l/libncurses.so.5", O_RDONLY) = -1 ENOENT (No such
> > > >>>>> file or directory)
> > > >>>>> stat64("/lib/tls/v5l", 0xbeb6d1a8) = -1 ENOENT (No such file or
> > > >>>>> directory)
> > > >>>>> open("/lib/tls/fast-mult/half/libncurses.so.5", O_RDONLY) = -1
> > > >>>>> ENOENT
> > > >>>>> (No such file or directory)
> > > >>>>> stat64("/lib/tls/fast-mult/half", 0xbeb6d1a8) = -1 ENOENT (No such
> > > >>>>> file or directory)
> > > >>>>> open("/lib/tls/fast-mult/libncurses.so.5", O_RDONLY) = -1 ENOENT (No
> > > >>>>> such file or directory)
> > > >>>>> stat64("/lib/tls/fast-mult", 0xbeb6d1a8) = -1 ENOENT (No such file
> > > >>>>> or
> > > >>>>> directory)
> > > >>>>> open("/lib/tls/half/libncurses.so.5", O_RDONLY) = -1 ENOENT (No such
> > > >>>>> file or directory)
> > > >>>>> stat64("/lib/tls/half", 0xbeb6d1a8) = -1 ENOENT (No such file or
> > > >>>>> directory)
> > > >>>>> open("/lib/tls/libncurses.so.5", O_RDONLY) = -1 ENOENT (No such file
> > > >>>>> or directory)
> > > >>>>> stat64("/lib/tls", {st_mode=S_IFDIR|0755,
> > > >>>>> st_size=17592186044416, ...}) = 0
> > > >>>>> open("/lib/v5l/fast-mult/half/libncurses.so.5", O_RDONLY) = -1
> > > >>>>> ENOENT
> > > >>>>> (No such file or directory)
> > > >>>>> stat64("/lib/v5l/fast-mult/half", 0xbeb6d1a8) = -1 ENOENT (No such
> > > >>>>> file or directory)
> > > >>>>> open("/lib/v5l/fast-mult/libncurses.so.5", O_RDONLY) = -1 ENOENT (No
> > > >>>>> such file or directory)
> > > >>>>> stat64("/lib/v5l/fast-mult", 0xbeb6d1a8) = -1 ENOENT (No such file
> > > >>>>> or
> > > >>>>> directory)
> > > >>>>> open("/lib/v5l/half/libncurses.so.5", O_RDONLY) = -1 ENOENT (No such
> > > >>>>> file or directory)
> > > >>>>> stat64("/lib/v5l/half", 0xbeb6d1a8) = -1 ENOENT (No such file or
> > > >>>>> directory)
> > > >>>>> open("/lib/v5l/libncurses.so.5", O_RDONLY) = -1 ENOENT (No such file
> > > >>>>> or directory)
> > > >>>>> stat64("/lib/v5l", 0xbeb6d1a8) = -1 ENOENT (No such file or
> > > >>>>> directory)
> > > >>>>> open("/lib/fast-mult/half/libncurses.so.5", O_RDONLY) = -1 ENOENT
> > > >>>>> (No
> > > >>>>> such file or directory)
> > > >>>>> stat64("/lib/fast-mult/half", 0xbeb6d1a8) = -1 ENOENT (No such file
> > > >>>>> or
> > > >>>>> directory)
> > > >>>>> open("/lib/fast-mult/libncurses.so.5", O_RDONLY) = -1 ENOENT (No
> > > >>>>> such
> > > >>>>> file or directory)
> > > >>>>> stat64("/lib/fast-mult", 0xbeb6d1a8) = -1 ENOENT (No such file or
> > > >>>>> directory)
> > > >>>>> open("/lib/half/libncurses.so.5", O_RDONLY) = -1 ENOENT (No such
> > > >>>>> file
> > > >>>>> or directory)
> > > >>>>> stat64("/lib/half", 0xbeb6d1a8) = -1 ENOENT (No such file or
> > > >>>>> directory)
> > > >>>>> open("/lib/libncurses.so.5", O_RDONLY) = 3
> > > >>>>> read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0
> > > >>>>> (\0\1\0\0\0\30\335\0\0004\0\0\0(\22\4\0\2\0\0\0044\0 \0\5\0
> > > >>>>> (\0\34\0\33\0\1\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\200l\3\0\200l
> > > >>>>> \3\0\5\0\0\0\0\200\0\0\1\0\0\0\0p\3\02
> > > >>>>> fstat64(3, {st_mode=S_IFREG|0744, st_size=17592186044416, ...}) = 0
> > > >>>>> lseek(3, 224268, SEEK_SET) = 224268
> > > >>>>> read(3, "\24\0\0\0T\0\0\0\25\0\0\0MontaVista Software
> > > >>>>> \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\06
> > > >>>>> mmap2(NULL, 292240, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE,
> > > >>>>> 3,
> > > >>>>> 0) = 0x40020000
>
> ...
>
> read more »
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