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Thread: java permission

  1. #1
    Join Date
    Mar 2014
    Posts
    30

    Default java permission

    when i type
    Code:
    java -version
    it will return
    Code:
    bash: /usr/bin/java: Permission denied
    so i run java with sudo and returned
    Code:
    openjdk version "1.9.0_00"                                                                                                                                                                       
    OpenJDK Runtime Environment (build 1.9.0_00-b74) 
    OpenJDK 64-Bit Server VM (build 1.9.0_00-b74, mixed mode)
    my question is:
    is it the right thing running java need root permission?
    or i already messed up something?

  2. #2
    Join Date
    Jun 2008
    Location
    Netherlands
    Posts
    25,245

    Default Re: java permission

    Attention, this is from openSUSE 13.1, but I assume it is valid also for Tumbleweed.
    Code:
    henk@boven:~> java -version
    java version "1.7.0_85"
    OpenJDK Runtime Environment (IcedTea 2.6.1) (suse-24.21.1-x86_64)
    OpenJDK 64-Bit Server VM (build 24.85-b03, mixed mode)
    henk@boven:~>
    and
    Code:
    henk@boven:~> l /usr/bin/java
    lrwxrwxrwx 1 root root 22 17 jan  2014 /usr/bin/java -> /etc/alternatives/java*
    henk@boven:~>
    and
    Code:
    henk@boven:~> ls -l /etc/alternatives/java
    lrwxrwxrwx 1 root root 41 17 jan  2014 /etc/alternatives/java -> /usr/lib64/jvm/jre-1.7.0-openjdk/bin/java
    henk@boven:~>
    and
    Code:
    henk@boven:~> l /usr/lib64/jvm/jre-1.7.0-openjdk/bin/java
    -rwxrwxr-x 1 root root 6368 22 jul 14:17 /usr/lib64/jvm/jre-1.7.0-openjdk/bin/java*
    henk@boven:~>
    As you see, java simply works for a normal user. And when you follow all the symlinks from /usr/bin/java to the end, you see that everybody has execution permission.

    So, yes, I guess something is borked on your system.

    PS. Please copy/paste the prompt, the command, the output and the next prompt in one mouse sweep. That is so much easier for you to do and for us to read then all that story telling: When I do ..., then I get ...
    Henk van Velden

  3. #3
    Join Date
    Mar 2014
    Posts
    30

    Default Re: java permission

    Quote Originally Posted by hcvv View Post
    Attention, this is from openSUSE 13.1, but I assume it is valid also for Tumbleweed.
    Code:
    henk@boven:~> java -version
    java version "1.7.0_85"
    OpenJDK Runtime Environment (IcedTea 2.6.1) (suse-24.21.1-x86_64)
    OpenJDK 64-Bit Server VM (build 24.85-b03, mixed mode)
    henk@boven:~>
    and
    Code:
    henk@boven:~> l /usr/bin/java
    lrwxrwxrwx 1 root root 22 17 jan  2014 /usr/bin/java -> /etc/alternatives/java*
    henk@boven:~>
    and
    Code:
    henk@boven:~> ls -l /etc/alternatives/java
    lrwxrwxrwx 1 root root 41 17 jan  2014 /etc/alternatives/java -> /usr/lib64/jvm/jre-1.7.0-openjdk/bin/java
    henk@boven:~>
    and
    Code:
    henk@boven:~> l /usr/lib64/jvm/jre-1.7.0-openjdk/bin/java
    -rwxrwxr-x 1 root root 6368 22 jul 14:17 /usr/lib64/jvm/jre-1.7.0-openjdk/bin/java*
    henk@boven:~>
    As you see, java simply works for a normal user. And when you follow all the symlinks from /usr/bin/java to the end, you see that everybody has execution permission.

    So, yes, I guess something is borked on your system.
    Code:
     the-laptop@linux-ek4g:~> l /usr/bin/java 
    lrwxrwxrwx 1 root users 22 Dec 10  2013 /usr/bin/java -> /etc/alternatives/java* 
    the-laptop@linux-ek4g:~> l /usr/bin/java 
    lrwxrwxrwx 1 root users 22 Dec 10  2013 /usr/bin/java -> /etc/alternatives/java* 
    the-laptop@linux-ek4g:~> ls -l /etc/alternatives/java 
    lrwxrwxrwx 1 root root 41 Aug 21 15:51 /etc/alternatives/java -> /usr/lib64/jvm/jre-1.9.0-openjdk/bin/java
    the-laptop@linux-ek4g:~> l /usr/lib64/jvm/jre-1.9.0-openjdk/bin/java 
    -rwxr--r-- 1 root root 8632 Aug 19 16:17 /usr/lib64/jvm/jre-1.9.0-openjdk/bin/java*
    
    maybe i have problem with installed jre-1.9.0 dont have x permission to other user

    Code:
     the-laptop@linux-ek4g:~> l /usr/lib64/jvm/jre-1.8.0-openjdk/bin/java 
    -rwxr-xr-x 1 root root 8632 Jul 23 23:39 /usr/lib64/jvm/jre-1.8.0-openjdk/bin/java*
    
    but from jre 1.8.0 it has


    Quote Originally Posted by hcvv View Post
    PS. Please copy/paste the prompt, the command, the output and the next prompt in one mouse sweep. That is so much easier for you to do and for us to read then all that story telling: When I do ..., then I get ...
    sorry about that

  4. #4
    Join Date
    Jun 2008
    Location
    Netherlands
    Posts
    25,245

    Default Re: java permission

    Code:
    -rwxr--r-- 1 root root 8632 Aug 19 16:17 /usr/lib64/jvm/jre-1.9.0-openjdk/bin/java*
    That is indeed not what to expect. But as I said, I do not uee Tumbleweed, thus it would be better if a Tumbleweed user that used the same java could comment.

    PS, how did the green texts appear in de copy/paste? I never get that.
    Henk van Velden

  5. #5
    Join Date
    Feb 2009
    Location
    Spain
    Posts
    25,547

    Default Re: java permission

    On 2015-08-22 17:06, Lit wrote:

    > Code:
    > --------------------
    > the-laptop@linux-ek4g:~> l /usr/bin/java
    > lrwxrwxrwx 1 root users 22 Dec 10 2013 /usr/bin/java -> /etc/alternatives/java*
    > the-laptop@linux-ek4g:~> l /usr/bin/java
    > lrwxrwxrwx 1 root users 22 Dec 10 2013 /usr/bin/java -> /etc/alternatives/java*
    > the-laptop@linux-ek4g:~> ls -l /etc/alternatives/java
    > lrwxrwxrwx 1 root root 41 Aug 21 15:51 /etc/alternatives/java -> /usr/lib64/jvm/jre-1.9.0-openjdk/bin/java
    > the-laptop@linux-ek4g:~> l /usr/lib64/jvm/jre-1.9.0-openjdk/bin/java
    > -rwxr--r-- 1 root root 8632 Aug 19 16:17 /usr/lib64/jvm/jre-1.9.0-openjdk/bin/java*
    >
    >
    > --------------------



    Code:
    Tumbleweed:~ # l /usr/bin/java
    lrwxrwxrwx 1 root root 22 Aug  6 00:41 /usr/bin/java -> /etc/alternatives/java*
    Tumbleweed:~ # l /etc/alternatives/java
    lrwxrwxrwx 1 root root 41 Aug  6 00:41 /etc/alternatives/java -> /usr/lib64/jvm/jre-1.8.0-openjdk/bin/java*
    Tumbleweed:~ # l /usr/lib64/jvm/jre-1.8.0-openjdk/bin/java
    -rwxr-xr-x 1 root root 8632 Jul 23 17:39 /usr/lib64/jvm/jre-1.8.0-openjdk/bin/java*
    Tumbleweed:~ # java -version
    openjdk version "1.8.0_51"
    OpenJDK Runtime Environment (build 1.8.0_51-b16)
    OpenJDK 64-Bit Server VM (build 25.51-b03, mixed mode)
    Tumbleweed:~ # su - cer
    cer@Tumbleweed:~> java -version
    openjdk version "1.8.0_51"
    OpenJDK Runtime Environment (build 1.8.0_51-b16)
    OpenJDK 64-Bit Server VM (build 25.51-b03, mixed mode)
    cer@Tumbleweed:~>

    I don't have the same java version as you. The above is the default in TW.


    You don't have execution permissions for group or others. Just change them.
    Probably report bug to whoever packaged java 1.9



    --
    Cheers / Saludos,

    Carlos E. R.
    (from 13.1 x86_64 "Bottle" at Telcontar)

  6. #6
    Join Date
    Jun 2008
    Location
    Netherlands
    Posts
    25,245

    Default Re: java permission

    Quote Originally Posted by robin_listas View Post

    You don't have execution permissions for group or others. Just change them.
    Probably report bug to whoever packaged java 1.9
    --
    Cheers / Saludos,

    Carlos E. R.
    (from 13.1 x86_64 "Bottle" at Telcontar)
    I assume that the OP also understands that changing them is a solution to the incident. But the important thing is of course understanding the root cause. Simply reporting a bug without further evidence that it is realy wrong in the RMP is a bit of an easy shortcut imho.
    Henk van Velden

  7. #7
    Join Date
    Feb 2009
    Location
    Spain
    Posts
    25,547

    Default Re: java permission

    On 2015-08-22 21:46, hcvv wrote:

    > I assume that the OP also understands that changing them is a solution
    > to the incident. But the important thing is of course understanding the
    > root cause. Simply reporting a bug without further evidence that it is
    > realy wrong in the RMP is a bit of an easy shortcut imho.


    Well, then verify the rpm contents ;-)

    Code:
    rpm -qfV /usr/lib64/jvm/jre-1.9.0-openjdk/bin/java
    --
    Cheers / Saludos,

    Carlos E. R.

    (from 13.1 x86_64 "Bottle" (Minas Tirith))

  8. #8
    Join Date
    Jun 2008
    Location
    San Diego, Ca, USA
    Posts
    11,368
    Blog Entries
    2

    Default Re: java permission

    I just installed openjdk 1.9 to take a look at this on a TW.

    Ran into the same issue, you can't "read" the java version using a normal User account although you can if you execute the same command from a root console.

    Unless something new is reported, I don't know if this issue also applies to running a jar as a normal user (openjdk 1.9).
    (Somewhere I've got an old standalone jar for testing but it's not on my current machine)
    Who knows, maybe it's a new security loophole that's been closed if it's intentional.

    TSU

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