[yocto] Fwd: OpenSSH pre login banner

[Bryan Evenson]

Amit,

First, I suggest you change
PRINC = "4"
to
PRINC := "${@int(PRINC) + 1}"

This way your bbappend will always increment the PR to one more than the PR called out by the main recipe.  So if the openssh recipe would get updated and increment the PR, you do not have to change your bbappend.

Change
SRC_URI = "file://banner"
To
SRC_URI += "file://banner"

The += appends your banner file to the SRC_URI for the openssh recipe.  With your line, you are overriding all the SRC_URI for the entire openssh recipe and the openssh recipe will only include the banner file.  I've taken to the habit of writing the SRC_URI as follows:

SRC_URI += " \
file://banner \
"
just to ensure that words aren't joined together when my SRC_URI is appended to the existing one.  I don't know if this is strictly necessary, but it's not a bad habit.

Change
FILESEXTRAPATHS_prepend := "${THISDIR}/openssh-6.1p1:"
to
FILESEXTRAPATHS_prepend := "${THISDIR}:"

so Bitbake can find your banner file and sshd_config that you have in the same directory as the bbappend.

I can't remember if you get a warning if Bitbake can't find the license file at all or if it fails on each attempt through the filepath.  Since your new path is first, it won't find LICENCE in your layer since you didn't copy it.  Once way to quiet this warning would be to copy the license file to your directory.

-Bryan

From: Amit Tomer [mailto:amittomer25 at gmail.com]
Sent: Thursday, October 03, 2013 8:23 AM
To: Bryan Evenson
Cc: yocto at yoctoproject.org
Subject: Re: [yocto] Fwd: OpenSSH pre login banner

Hi Brayan

Thanks for your help

The way I modify .bbapend file is below

PRINC = "4"
SRC_URI = "file://banner<file:///\\banner>"
FILESEXTRAPATHS_prepend := "${THISDIR}/openssh-6.1p1:"
do_install_append() {

Install -m 755 ${WORKDIR}/banner ${D}${sysconfdir}/ssh
}



But it gives me

Below problem

WARNING: /tmp/work/cortexa15hf-vfp-neon-poky-linux-gnueabi/openssh/6.1p1-r3/openssh-6.1p1/LICENCE could not be copied for some reason. It may not exist. WARN for now.

And my build process is really got slow and sometimes I am getting the error also

What could be the reason for above??






On Thu, Oct 3, 2013 at 5:49 PM, Bryan Evenson <bevenson at melinkcorp.com<mailto:bevenson at melinkcorp.com>> wrote:
Amit,

>From your message, I'm assuming you have a bbappend file for openssh.  Following the example in section of 5.1.4 of the Mega Manual (located at http://www.yoctoproject.org/docs/current/mega-manual/mega-manual.html#using-bbappend-files) and from personal experience, put the following in your bbappend file:

FILESEXTRAPATHS_prepend := " ${THISDIR}: "
SRC_URI += " file://banner<file:///\\banner> "
FILES_${PN} += " /etc/ssh/banner "

do_install_append() {
                install -d ${D}${sysconfdir}/ssh
                install -m 0644 ${WORKDIR}/banner ${D}${sysconfdir/ssh/banner
}
PRINC := "${@int(PRINC) + 1}"

then place your banner file and sshd_config in the same directory as your bbappend.  When openssh gets built, Bitbake will find your sshd_config first and use and install that file instead of the one from the main layer.  The recipe also tells it how to handle the new banner file that is not part of the original recipe; you do not need to put these rules in place for sshd_config because that is already part of the original recipe.  Then in the future every time you make a change to the openssh package in your layer, increment the PRINC so your package management tools will see it as an upgrade.  For example, if you change the contents of the banner file, then change the "+ 1" to "+ 2".

-Bryan

From: yocto-bounces at yoctoproject.org<mailto:yocto-bounces at yoctoproject.org> [mailto:yocto-bounces at yoctoproject.org<mailto:yocto-bounces at yoctoproject.org>] On Behalf Of Amit Tomer
Sent: Thursday, October 03, 2013 7:05 AM
To: yocto at yoctoproject.org<mailto:yocto at yoctoproject.org>
Subject: [yocto] Fwd: OpenSSH pre login banner


---------- Forwarded message ----------
From: Amit Tomer <amittomer25 at gmail.com<mailto:amittomer25 at gmail.com>>
Date: Thu, Oct 3, 2013 at 1:50 PM
Subject: OpenSSH pre login banner
To: "yocto-request at yoctoproject.org<mailto:yocto-request at yoctoproject.org>" <yocto-request at yoctoproject.org<mailto:yocto-request at yoctoproject.org>>
I am new to OpenEmbedded Yocto and have a requirement where OpenSSH pre login banner
should come when do ssh from target board

Now I know I have to create a simple .txt file(banner) and put my banner in to it and add the following to sshd_config

Banner /etc/ssh/banner

But now  wanted to know where should I keep my banner file in yocto so that Yocto build infrastructure will pack banner file  to /etc/ssh/banner into final image.

I do have receipes for openssh in meta-xyz/recipes-connectivity/openssh  folder

Thanks
Amit





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