Frank Dreyfus wrote:
> Hi,
>
> I want to write a simple php program to show the user the status of the
> RAID array on the system. The user is not linux literate so I want to
> make it as idiot proof as possible. Not that I'm much better ;>)
>
> The command: dmraid -r displays the raid status.
>
> I'm using the php passthru() function to display the result of the above
> command on a web page.
>
> Here's a snippet from the php script to demonstrate that this doesn't
> work from php.
>
>
> > echo '

';

>

>    // this works and outputs several lines of text

>    passthru('ls -l',$retval);

>

>    // return value=0 (success)

>    echo '
'.$retval;

>

>    echo '
';

>

>    // this outputs nothing

>    passthru('dmraid -r',$retval);

>

>    // return value=1 (error)

>    echo '
'.$retval;

>

>    exit();

>    echo '

';
> ?>
>
> So why does passthru('ls -l') work and passthru('dmraid -r') not work?
>
> Thanks,
>
>
> Frank
>
>
may I sugest makeing dmraid -r output to a text file then picking up the
file after created then deleating the file

maby dmraid -r is outputing to sterr insted of stout.

then maby you could post the working php here, I could use somthing like
that on my server.

On Mon, 18 Feb 2008 22:33:35 -0500, Frank Dreyfus wrote:

> // this outputs nothing
> passthru('dmraid -r',$retval);

dmraid resides in /sbin, requires root auth as it can be used to activate
or deactivate raid sets.

I think you could set up a symlink to /sbin/dmraid in /usb/bin, and add
a /etc/sudoers entry to allow "dmraid -r", to run as root, without a
password. Make sure it only allows the -r option. Test it thourghly .

I still find the sudoers file a mess to figure out.

Regards, Dave Hodgins

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"David W. Hodgins" wrote in
newsp.t6rvovlaa3w0dx@hodgins.homeip.net:

> I think you could set up a symlink to /sbin/dmraid in /usb/bin, and add
> a /etc/sudoers entry to allow "dmraid -r", to run as root, without a
> password.

Thanks again Dave,

I'll be out of the office today but will give it a try tonight.


Thanks,


Frank

chris gareau wrote in news:qnuuj.54910$Ly.25440@pd7urf1no:


Hi Chris,

> may I sugest makeing dmraid -r output to a text file then picking up
> the file after created then deleating the file
>
> maby dmraid -r is outputing to sterr insted of stout.
>

I had tried that but with no joy.

> then maby you could post the working php here, I could use somthing
> like that on my server.
>

Will do.

Frank

Frank Dreyfus wrote in
news:Xns9A48E57E31554adfslur0mdoaur03jadl@207.115. 17.102:

> Hi,
>
> I want to write a simple php program to show the user the status of the
> RAID array on the system. The user is not linux literate so I want to
> make it as idiot proof as possible. Not that I'm much better ;>)
>
> The command: dmraid -r displays the raid status.
>
> I'm using the php passthru() function to display the result of the
above
> command on a web page.
>
> Here's a snippet from the php script to demonstrate that this doesn't
> work from php.
>
>
> > echo '

';

>

>    // this works and outputs several lines of text

>    passthru('ls -l',$retval);

>

>    // return value=0 (success)

>    echo '
'.$retval;

>

>    echo '
';

>

>    // this outputs nothing

>    passthru('dmraid -r',$retval);

>

>    // return value=1 (error)

>    echo '
'.$retval;

>

>    exit();

>    echo '

';
> ?>
>
> So why does passthru('ls -l') work and passthru('dmraid -r') not work?
>
> Thanks,
>
>
> Frank
>
>
>

OK, It works!

Here's how to do it.

1. Add a line to /etc/sudoers as follows:
apache = NOPASSWD: /sbin/dmraid -r

This permits user apache to run dmraid -r and ONLY dmraid with the -r
parameter. Thanks to the NOPASSWD: directive, sudo doesn't ask for a
password.

Note: substitute your host name for .

2. Incorporate this php snippet into your web page.
echo '

';

passthru('sudo dmraid -r',$retval);



exit();  //I don't think this line is needed but it doesn't hurt

echo '

';
?>

That's it.

Works very nicely.

Thanks David for pointing me in the right direction and thanks Bit
Twister for helping me out with sudo.

Frank