java for arm_v7a
Sebastian Sumpf
Sebastian.Sumpf at genode-labs.com
Sun Apr 23 11:01:40 CEST 2023
On 4/22/23 11:20, Divya Sharma wrote:
> Thanks Sebastian,
> It worked.
I am glad it worked and thanks for the feedback!
Sebastian
> DIvya.
>
> On Sat, Apr 22, 2023 at 12:38 PM Sebastian Sumpf
> <Sebastian.Sumpf at genode-labs.com <mailto:Sebastian.Sumpf at genode-labs.com>> wrote:
>
> Hi Divya,
>
> On 4/22/23 07:35, Divya Sharma wrote:
> > Thanks Sebastain.
> > I found the "cryptoPolicyPath" [1] and the .policy file which grants the
> > permission to use the algorithm.
> > But I could not figure out how to add it in the VFS and boot module as you
> > suggested .
> > So the runtime scenario of java can have access to that policy file.
> >
> > Also I tried to add that path [3] in INC_DIR+= of jvm.inc and java.inc but
> > could not provide the access policy.
> > Also during the booting of java i got the error [2] indicating the page
> fault
> > occurs due to thread='pthread.0.
> >
> >
> [1]GENODE_DIR]/contrib/jdk_generated-afb22ed3b35d8700b821722d2df871e6e2c53717/src/app/jdk/bin/conf/security/policy/unlimited/default_local.policy.
> > [2]no RM attachment (READ pf_addr=0x0 pf_ip=0x2001ad90 from pager_object:
> > pd='init -> java' thread='pthread.0')
> > Warning: page fault, pager_object: pd='init -> java' thread='pthread.0'
> > ip=0x2001ad90 fault-addr=0x0 type=no-page
> > [3]$(JDK_GENERATED)/bin/conf/security/policy/unlimited \
>
> Under the assumption that Java is looking for the path
> "/conf/security/policy/unlimited" and because the policy file is very small you
> could as a first step try to inline the contents of the file in the <vfs> node
> of the run script:
>
> ! <vfs>
> ! ....
> ! <dir name="conf">
> ! <dir name="security">
> ! <dir name="policy">
> ! <dir name="unlimited">
> ! <inline name="default_local.policy">
> ! grant {
> ! // There is no restriction to any algorithms.
> ! permission javax.crypto.CryptoAllPermission;
> ! };
> ! </inline>
> ! </dir>
> ! </dir>
> ! </dir>
> ! </dir>
> !
> ! ...
> ! </vfs>
>
> Once this is working you can later add it as a ROM module by modifying [1] and
> copy the file into the Java packet from which it can be accessed by the run
> script via.
>
> ! <rom name="default_local.policy"/>
>
> which would replace the <inline> node above.
>
> [1] repos/world/recipes/raw/jdk/content.mk <http://content.mk>
>
> Good luck,
>
> Sebastian
>
> > DIvya.
> >
> > On Thu, Apr 13, 2023 at 12:38 PM Sebastian Sumpf
> > <Sebastian.Sumpf at genode-labs.com <mailto:Sebastian.Sumpf at genode-labs.com>
> <mailto:Sebastian.Sumpf at genode-labs.com
> <mailto:Sebastian.Sumpf at genode-labs.com>>> wrote:
> >
> > Hello Divya,
> >
> > On 4/13/23 05:55, Divya Sharma wrote:
> > > While using the *javax.crypto.** library in a Java application,I
> got the
> > > following error [1] ,[2]saying that "Can not initialize the
> cryptographic
> > > mechanism".
> > > While inspecting the default policies got to know that permissions are
> > already
> > > granted for all algorithms.
> > > We also set those to unlimited in java code itself using the [3]
> and [4].
> > > Still could not resolve the issue.Is there anything that we are
> missing
> > out on?
> > > kindly give some suggestions on it .
> > >
> > >
> > > [1]java.lang.SecurityException: Can not initialize cryptographic
> mechanism
> > > [2]java.lang.SecurityException: Can't read cryptographic policy
> > directory: unlimited
> > > [3] Security.setProperty("crypto.policy", "unlimited");
> > > [4] System.setProperty("java.security.properties","unlimited");
> > >
> >
> > In [1] I see the following code:
> >
> > ! if (!Files.isDirectory(cryptoPolicyPath)
> > ! || !Files.isReadable(cryptoPolicyPath)) {
> > ! throw new SecurityException(
> > ! "Can't read cryptographic policy directory: " +
> > ! cryptoPolicyProperty);
> > ! }
> >
> > I would try to find out what "cryptoPolicyPath" is, what file is
> expected, and
> > put the expected file at the right place in the run script (in the <vfs>
> > node +
> > boot modules).
> >
> > [1]
> jdk/src/java.base/share/classes/javax/crypto/JceSecurity.java.template
> >
> > Regards,
> >
> > Sebastian
> >
> > >
> > > On Mon, Apr 10, 2023 at 6:49 PM Divya Sharma
> <divyasharma26546 at gmail.com <mailto:divyasharma26546 at gmail.com>
> > <mailto:divyasharma26546 at gmail.com <mailto:divyasharma26546 at gmail.com>>
> > > <mailto:divyasharma26546 at gmail.com
> <mailto:divyasharma26546 at gmail.com> <mailto:divyasharma26546 at gmail.com
> <mailto:divyasharma26546 at gmail.com>>>>
> > wrote:
> > >
> > > Thanks, Sebastian issue is resolved.
> > >
> > > I want to run simple java code using java binary into bash
> shell. To
> > achieve
> > > it I figured out some modification to the separate run script
> > > user_shell_dev.run from bash.run script .But those did not
> work load
> > java
> > > vm in shell.
> > > While booting in Qemu i got the error [1] ,[3] also i am able
> to spawn a
> > > shell into the terminal but while running java in it got [2].
> > > It is not able to initialize the vm to run java.
> > > Kindly suggest a way to achieve this .
> > >
> > >
> > > [1][init -> java] Error occurred during initialization of VM
> > > init -> java] java.lang.UnsatisfiedLinkError: no zip in
> > java.library.path
> > > [2]Error occurred during the initialization of vm.
> > > Unable to load zip lib "zip.lib.so <http://zip.lib.so>
> <http://zip.lib.so <http://zip.lib.so>>
> > <http://zip.lib.so <http://zip.lib.so> <http://zip.lib.so
> <http://zip.lib.so>>>"
> > >
> > > [3][init -> /bin/bash -> 1] Error: ROM-session creation failed
> > > (ram_quota=6144, cap_quota=3, label="zip.lib.so
> <http://zip.lib.so> <http://zip.lib.so <http://zip.lib.so>>
> > <http://zip.lib.so <http://zip.lib.so> <http://zip.lib.so
> <http://zip.lib.so>>>")
> > >
> > >
> > > Thanks,
> > > DIvya.
> > >
> > >
> > > On Mon, Apr 10, 2023 at 3:52 PM Sebastian Sumpf
> > > <Sebastian.Sumpf at genode-labs.com
> <mailto:Sebastian.Sumpf at genode-labs.com>
> > <mailto:Sebastian.Sumpf at genode-labs.com
> <mailto:Sebastian.Sumpf at genode-labs.com>>
> > <mailto:Sebastian.Sumpf at genode-labs.com
> <mailto:Sebastian.Sumpf at genode-labs.com>
> > <mailto:Sebastian.Sumpf at genode-labs.com
> <mailto:Sebastian.Sumpf at genode-labs.com>>>>
> > > wrote:
> > >
> > > Hello Divya,
> > >
> > > On 4/8/23 07:45, Divya Sharma wrote:
> > > > While running the java.run script I got the following error
> > > [1]showing out of
> > > > memory allocation.
> > > > Kindly suggest the way to remove it rather than build
> all the
> > required
> > > > dependencies and packages from scratch.
> > > >
> > > >
> > > >
> > >
> >
> [1]/usr/local/genode/tool/21.05/bin/../lib/gcc/arm-none-eabi/10.3.0/../../../../arm-none-eabi/bin/as: out of memory allocating 9223372036854841471 bytes after a total of 696320 bytes
> > > >
> > >
> > > This looks like as if it happens when linking the boot
> modules of
> > the image
> > > together. Maybe there are too many modules and something
> got too
> > big? By
> > > the
> > > size of the allocation clearly something did overflow, but
> it's
> > hard to
> > > tell
> > > without the actual scenario. What did you change in the
> > "java.run" script?
> > >
> > > Regards,
> > >
> > > Sebastian
> > >
> > > >
> > > >
> > > >
> > > > On Wed, Apr 5, 2023 at 11:02 PM
> <ttcoder at netcourrier.com <mailto:ttcoder at netcourrier.com>
> > <mailto:ttcoder at netcourrier.com <mailto:ttcoder at netcourrier.com>>
> > > <mailto:ttcoder at netcourrier.com
> <mailto:ttcoder at netcourrier.com> <mailto:ttcoder at netcourrier.com
> <mailto:ttcoder at netcourrier.com>>>
> > > > <mailto:ttcoder at netcourrier.com
> <mailto:ttcoder at netcourrier.com>
> > <mailto:ttcoder at netcourrier.com <mailto:ttcoder at netcourrier.com>>
> <mailto:ttcoder at netcourrier.com <mailto:ttcoder at netcourrier.com>
> > <mailto:ttcoder at netcourrier.com <mailto:ttcoder at netcourrier.com>>>>>
> wrote:
> > > >
> > > >
> > > >>
> > > >> Hello Genodians,
> > > >>
> > > >> I am able to run java.run in virt_qemu-arm_v7a.
> The output is
> > > directed to
> > > >> log [ stdout="/dev/log" ], is there a way to
> redirect the
> > sdtout to
> > > >> terminal [ stdout="/dev/terminal" ] instead of log?
> > > >>
> > > >>
> > > >
> > > > My two cents : the way I do it here is to modify
> the "config"
> > > scenario file
> > > > this way:
> > > > - keep stdout set to "/dev/log"
> > > > - modify the routing to : <route> <service
> name="LOG"> <child
> > > > name="terminal_log"> ...
> > > > - add a terminal_log component
> > > > - add a terminal component.
> > > >
> > > > It works for me... But if there is a way to specify
> > > stdout="/dev/terminal"
> > > > instead, that might be of interest to me as well.
> > > >
> > > > Cedric
> > > >
> > > >
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> > >
> > > --
> > > Sebastian Sumpf
> > > Genode Labs
> > >
> > > http://www.genode-labs.com <http://www.genode-labs.com>
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> Genode Labs
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