[Buildroot] Howto use "Makeusers"

[Buildroot] Howto use "Makeusers"

[Andreas Ehmanns]

Hello,
to make an openldap server available for buildroot I created an init 
script which starts the ldap server as non-privileged user (and group).
Since the ldap user and group is not existing on the target I searched 
for a way to let the openldap package add the user and group to the 
target filesystem. The buildroot documentation describes in chapter 23 
the syntax of "makeusers". So far so good, but I have no idea to which 
file I should add the corresponding makeusers command.

I grepped the buildroot tree for an example but unfortunately did not 
found a package using this command.

Does anybody have an example how to do this.

Regards,
Andreas

[Buildroot] Howto use "Makeusers"

[Thomas Petazzoni]

Andreas,

On Fri, 4 Dec 2015 15:01:51 +0100, Andreas Ehmanns wrote:

> to make an openldap server available for buildroot I created an init 
> script which starts the ldap server as non-privileged user (and group).
> Since the ldap user and group is not existing on the target I searched 
> for a way to let the openldap package add the user and group to the 
> target filesystem. The buildroot documentation describes in chapter 23 
> the syntax of "makeusers". So far so good, but I have no idea to which 
> file I should add the corresponding makeusers command.
> 
> I grepped the buildroot tree for an example but unfortunately did not 
> found a package using this command.
> 
> Does anybody have an example how to do this.

Directly in your .mk file, using a variable named <pkg>_USERS. See
package/dbus/dbus.mk for an example:

define DBUS_USERS
        dbus -1 dbus -1 * /var/run/dbus - dbus DBus messagebus user
endef

This is also documented in the manual, which says:

   LIBFOO_USERS lists the users to create for this package, if it
   installs a program you want to run as a specific user (e.g. as a
   daemon, or as a cron-job). The syntax is similar in spirit to the
   makedevs one, and is described in the Chapter 23, Makeusers syntax
   documentation. This variable is optional.

Hope this helps,

Thomas
-- 
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com

[Buildroot] Howto use "Makeusers"

[Andreas Ehmanns]

Am 04.12.2015 um 15:03 schrieb Thomas Petazzoni:
> Andreas,
>
> On Fri, 4 Dec 2015 15:01:51 +0100, Andreas Ehmanns wrote:
>
>> to make an openldap server available for buildroot I created an init
>> script which starts the ldap server as non-privileged user (and group).
>> Since the ldap user and group is not existing on the target I searched
>> for a way to let the openldap package add the user and group to the
>> target filesystem. The buildroot documentation describes in chapter 23
>> the syntax of "makeusers". So far so good, but I have no idea to which
>> file I should add the corresponding makeusers command.
>>
>> I grepped the buildroot tree for an example but unfortunately did not
>> found a package using this command.
>>
>> Does anybody have an example how to do this.
> Directly in your .mk file, using a variable named <pkg>_USERS. See
> package/dbus/dbus.mk for an example:
>
> define DBUS_USERS
>          dbus -1 dbus -1 * /var/run/dbus - dbus DBus messagebus user
> endef
>
> This is also documented in the manual, which says:
>
>     LIBFOO_USERS lists the users to create for this package, if it
>     installs a program you want to run as a specific user (e.g. as a
>     daemon, or as a cron-job). The syntax is similar in spirit to the
>     makedevs one, and is described in the Chapter 23, Makeusers syntax
>     documentation. This variable is optional.
>
> Hope this helps,
>
> Thomas
Dear Thomas, dear Gustavo,
thanks for your information and your hints. Seems that I did not grep 
for the right key word.

Regards,
Andreas

[Buildroot] Howto use "Makeusers"

[Gustavo Zacarias]

On 04/12/15 11:01, Andreas Ehmanns wrote:

> Hello,
> to make an openldap server available for buildroot I created an init
> script which starts the ldap server as non-privileged user (and group).
> Since the ldap user and group is not existing on the target I searched
> for a way to let the openldap package add the user and group to the
> target filesystem. The buildroot documentation describes in chapter 23
> the syntax of "makeusers". So far so good, but I have no idea to which
> file I should add the corresponding makeusers command.
>
> I grepped the buildroot tree for an example but unfortunately did not
> found a package using this command.
>
> Does anybody have an example how to do this.
>
> Regards,
> Andreas

Hi.
Actually several packages use this functionality, see for example 
package/squid/squid.mk (SQUID_USERS), package/redis/redis.mk 
(REDIS_USERS) and such.
Regards.