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<title>GLEP 27 -- Portage Management of UIDs/GIDs</title> |
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<link rel="stylesheet" href="tools/glep.css" type="text/css" /> |
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<tr><td class="navicon" width="150" height="35"> |
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<a href="http://www.gentoo.org/" title="Gentoo Linux Home Page"> |
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border="0" width="150" height="35" /></a></td> |
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<td class="textlinks" align="left"> |
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[<b><a href="http://www.gentoo.org/">Gentoo Linux Home</a></b>] |
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antarus |
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[<b><a href="http://www.gentoo.org/proj/en/glep">GLEP Index</a></b>] |
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[<b><a href="http://www.gentoo.org/proj/en/glep/glep-0027.txt">GLEP Source</a></b>] |
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</td></tr></table> |
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<table class="rfc2822 docutils field-list" frame="void" rules="none"> |
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<col class="field-name" /> |
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<tbody valign="top"> |
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<tr class="field"><th class="field-name">GLEP:</th><td class="field-body">27</td> |
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</tr> |
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<tr class="field"><th class="field-name">Title:</th><td class="field-body">Portage Management of UIDs/GIDs</td> |
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</tr> |
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<tr class="field"><th class="field-name">Version:</th><td class="field-body">1.5</td> |
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</tr> |
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<tr class="field"><th class="field-name">Last-Modified:</th><td class="field-body"><a class="reference" href="http://www.gentoo.org/cgi-bin/viewcvs.cgi/xml/htdocs/proj/en/glep/glep-0027.txt?cvsroot=gentoo">2005/09/18 20:48:23</a></td> |
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</tr> |
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<tr class="field"><th class="field-name">Author:</th><td class="field-body">Mike Frysinger <vapier at gentoo.org></td> |
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</tr> |
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<tr class="field"><th class="field-name">Status:</th><td class="field-body">Approved</td> |
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</tr> |
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<tr class="field"><th class="field-name">Type:</th><td class="field-body">Standards Track</td> |
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</tr> |
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<tr class="field"><th class="field-name">Content-Type:</th><td class="field-body"><a class="reference" href="glep-0002.html">text/x-rst</a></td> |
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</tr> |
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<tr class="field"><th class="field-name">Created:</th><td class="field-body">29 May 2004</td> |
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</tr> |
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<tr class="field"><th class="field-name">Post-History:</th><td class="field-body">29-May-2004, 20-Jul-2004</td> |
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</tr> |
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</tbody> |
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</table> |
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<hr /> |
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<div class="contents topic"> |
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<p class="topic-title first"><a id="contents" name="contents">Contents</a></p> |
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<ul class="simple"> |
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<li><a class="reference" href="#status" id="id2" name="id2">Status</a></li> |
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<li><a class="reference" href="#abstract" id="id3" name="id3">Abstract</a></li> |
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<li><a class="reference" href="#motivation" id="id4" name="id4">Motivation</a></li> |
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<li><a class="reference" href="#specification" id="id5" name="id5">Specification</a><ul> |
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<li><a class="reference" href="#portage-structure" id="id6" name="id6">Portage Structure</a><ul> |
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<li><a class="reference" href="#defining-accounts" id="id7" name="id7">Defining Accounts</a></li> |
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<li><a class="reference" href="#local-overrides" id="id8" name="id8">Local Overrides</a></li> |
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</ul> |
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</li> |
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<li><a class="reference" href="#developer-interface" id="id9" name="id9">Developer Interface</a><ul> |
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<li><a class="reference" href="#eusers-egroups" id="id10" name="id10">EUSERS + EGROUPS</a></li> |
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<li><a class="reference" href="#id1" id="id11" name="id11">Defining Accounts</a></li> |
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</ul> |
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</li> |
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<li><a class="reference" href="#user-interface" id="id12" name="id12">User Interface</a><ul> |
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<li><a class="reference" href="#users-update" id="id13" name="id13">users-update</a></li> |
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<li><a class="reference" href="#features-noautoaccts" id="id14" name="id14">FEATURES=noautoaccts</a></li> |
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</ul> |
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</li> |
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</ul> |
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</li> |
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<li><a class="reference" href="#rationale" id="id15" name="id15">Rationale</a></li> |
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<li><a class="reference" href="#backwards-compatibility" id="id16" name="id16">Backwards Compatibility</a></li> |
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<li><a class="reference" href="#references" id="id17" name="id17">References</a></li> |
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<li><a class="reference" href="#copyright" id="id18" name="id18">Copyright</a></li> |
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</ul> |
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</div> |
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<div class="section"> |
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<h1><a class="toc-backref" href="#id2" id="status" name="status">Status</a></h1> |
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<p>This GLEP was approved as-is on 14-Jun-2004.</p> |
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</div> |
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<div class="section"> |
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<h1><a class="toc-backref" href="#id3" id="abstract" name="abstract">Abstract</a></h1> |
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<p>The current handling of users and groups in the portage system lacks |
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policy and a decent API. We need an API that is both simple for |
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developers and end users.</p> |
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</div> |
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<div class="section"> |
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<h1><a class="toc-backref" href="#id4" id="motivation" name="motivation">Motivation</a></h1> |
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<p>Currently the policy is left up to respective ebuild maintainers to |
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choose the username, id, shell settings, etc... and to have them added |
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in the right place at the right time in the right way. When the |
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addition of users was found to often times have broken logic, the |
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enewuser and enewgroup functions were designed to remove all the |
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details. However, these functions still suffer from some fundamental |
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problems. First, there is no local customization. Second, maintainers |
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still use the functions improperly (binary packages have suffered the |
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most thus far). Third, the functions are not portable across non-linux |
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systems and not friendly to cross compiling or other exotic setups. |
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There are other reasons, but these listed few are enough to warrant |
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change.</p> |
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</div> |
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<div class="section"> |
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<h1><a class="toc-backref" href="#id5" id="specification" name="specification">Specification</a></h1> |
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<div class="section"> |
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<h2><a class="toc-backref" href="#id6" id="portage-structure" name="portage-structure">Portage Structure</a></h2> |
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<div class="section"> |
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<h3><a class="toc-backref" href="#id7" id="defining-accounts" name="defining-accounts">Defining Accounts</a></h3> |
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<p>New directories will need to be added to the rsync tree to store the files |
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that define the default values for new accounts. They will be stored on a |
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per-profile basis, that way sub-profiles may easily override parent profiles. |
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The default location will be the base profile since all other profiles inherit |
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from there.</p> |
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<pre class="literal-block"> |
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portage/profiles/base/accounts/ |
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user/<username> |
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group/<groupname> |
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accounts |
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</pre> |
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<p>The files are named with the respective user/group name since they need |
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to be unique in their respective domains. For example, the file |
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detailing the ntp user would be located accounts/user/ntp. Each |
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username file will detail the required information about each user. |
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Certain account features that exist on one class of systems (Linux) but |
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not on others (*BSD) can be redefined in their respective subprofiles. Each |
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groupname will follow similar guidelines. The accounts file will be used to |
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describe global account defaults such as the default range of 'valid system' |
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ids. For example, if the UID 123 is already used on a system, but the ntp |
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user defaults to '123', we obviously cannot just duplicate it. So we |
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would select the next available UID on the system based upon the range |
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defined here.</p> |
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</div> |
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<div class="section"> |
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<h3><a class="toc-backref" href="#id8" id="local-overrides" name="local-overrides">Local Overrides</a></h3> |
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<p>Following the tried and true style of custom local portage files being |
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found in /etc/portage, this new system will follow the same. Users can |
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setup their own directory heirarchy in /etc/portage/profile/accounts/ that |
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mimics the heirarchy found in the portage tree. When portage attempts to add |
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a new user, it will first check /etc/portage/profile/accounts/user/<username>. |
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If it does not exist, it will simply use the default definition in the |
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portage tree.</p> |
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</div> |
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</div> |
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<div class="section"> |
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<h2><a class="toc-backref" href="#id9" id="developer-interface" name="developer-interface">Developer Interface</a></h2> |
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<div class="section"> |
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<h3><a class="toc-backref" href="#id10" id="eusers-egroups" name="eusers-egroups">EUSERS + EGROUPS</a></h3> |
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<p>Ebuilds that wish to add users or groups to the system must set these |
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variables. They are both space delimited lists that tells portage what |
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users/groups must be added to the system before emerging the ebuild. The |
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maintainer of the ebuild can assume the users/groups they have listed |
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exist before the functions in the ebuild (pkg_setup, src_install, etc...) |
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are ever run.</p> |
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</div> |
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<div class="section"> |
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<h3><a class="toc-backref" href="#id11" id="id1" name="id1">Defining Accounts</a></h3> |
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<p>Any developer is free to add users/groups in their ebuilds provided they |
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create the required account definition files.</p> |
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</div> |
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</div> |
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<div class="section"> |
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<h2><a class="toc-backref" href="#id12" id="user-interface" name="user-interface">User Interface</a></h2> |
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<div class="section"> |
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<h3><a class="toc-backref" href="#id13" id="users-update" name="users-update">users-update</a></h3> |
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<p>When this script is run, all the users/groups that have been added by |
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portage to the system will be shown along with the packages that have |
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added said users/groups. Here they can delete accounts that are no longer |
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required by the currently installed packages (and optionally run a |
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script that will try to locate all files on the system that may still be |
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owned by the account).</p> |
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</div> |
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<div class="section"> |
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<h3><a class="toc-backref" href="#id14" id="features-noautoaccts" name="features-noautoaccts">FEATURES=noautoaccts</a></h3> |
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<p>This is for the people who never want portage creating accounts for them. |
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When portage needs to add an account to the system but "noautoaccts" is |
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in FEATURES, portage will abort with a message instructing the user to |
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add the accounts that are listed in EUSERS and EGROUPS. This is |
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obviously a required step before the package will be emerged.</p> |
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</div> |
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</div> |
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</div> |
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<div class="section"> |
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<h1><a class="toc-backref" href="#id15" id="rationale" name="rationale">Rationale</a></h1> |
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<p>Developers no longer have to worry about how to properly add users/groups |
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to systems and worry about whether or not their code will work on all |
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systems (LDAP vs local shadow vs cross compile vs etc...). Users can |
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easily override the defaults Gentoo has before dictated. The default |
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passwd and group database can once again be trimmed down to the barest of |
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accounts.</p> |
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</div> |
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<div class="section"> |
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<h1><a class="toc-backref" href="#id16" id="backwards-compatibility" name="backwards-compatibility">Backwards Compatibility</a></h1> |
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<p>Handled in similar fashion as other portage rollouts. When using the new |
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account system, add a DEPEND for the required version of portage to the |
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ebuild.</p> |
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</div> |
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<div class="section"> |
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<h1><a class="toc-backref" href="#id17" id="references" name="references">References</a></h1> |
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<table class="docutils footnote" frame="void" id="apibug" rules="none"> |
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<colgroup><col class="label" /><col /></colgroup> |
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<tbody valign="top"> |
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<tr><td class="label"><a name="apibug">[1]</a></td><td><a class="reference" href="http://bugs.gentoo.org/show_bug.cgi?id=8634">http://bugs.gentoo.org/show_bug.cgi?id=8634</a></td></tr> |
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</tbody> |
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</table> |
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</div> |
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<div class="section"> |
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<h1><a class="toc-backref" href="#id18" id="copyright" name="copyright">Copyright</a></h1> |
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<p>This document has been placed in the public domain.</p> |
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</div> |
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</div> |
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<div class="footer"> |
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<hr class="footer" /> |
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<a class="reference" href="glep-0027.txt">View document source</a>. |
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Generated on: 2007-10-13 13:39 UTC. |
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Generated by <a class="reference" href="http://docutils.sourceforge.net/">Docutils</a> from <a class="reference" href="http://docutils.sourceforge.net/rst.html">reStructuredText</a> source. |
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</div> |
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</body> |
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</html> |
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