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27     <div class="document">
28     <table class="rfc2822 field-list" frame="void" rules="none">
29     <col class="field-name" />
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31     <tbody valign="top">
32     <tr class="field"><th class="field-name">GLEP:</th><td class="field-body">27</td>
33     </tr>
34     <tr class="field"><th class="field-name">Title:</th><td class="field-body">Portage Management of UIDs/GIDs</td>
35     </tr>
36     <tr class="field"><th class="field-name">Version:</th><td class="field-body">1.1</td>
37     </tr>
38     <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">2004/05/29 14:31:58</a></td>
39     </tr>
40     <tr class="field"><th class="field-name">Author:</th><td class="field-body">Mike Frysinger &lt;vapier&#32;&#97;t&#32;gentoo.org&gt;</td>
41     </tr>
42     <tr class="field"><th class="field-name">Status:</th><td class="field-body">Draft</td>
43     </tr>
44     <tr class="field"><th class="field-name">Type:</th><td class="field-body">Standards Track</td>
45     </tr>
46     <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>
47     </tr>
48     <tr class="field"><th class="field-name">Created:</th><td class="field-body">29 May 2004</td>
49     </tr>
50     <tr class="field"><th class="field-name">Post-History:</th><td class="field-body">29-May-2004</td>
51     </tr>
52     </tbody>
53     </table>
54     <hr />
55     <div class="contents topic" id="contents">
56     <p class="topic-title"><a name="contents">Contents</a></p>
57     <ul class="simple">
58     <li><a class="reference" href="#abstract" id="id2" name="id2">Abstract</a></li>
59     <li><a class="reference" href="#motivation" id="id3" name="id3">Motivation</a></li>
60     <li><a class="reference" href="#specification" id="id4" name="id4">Specification</a><ul>
61     <li><a class="reference" href="#portage-structure" id="id5" name="id5">Portage Structure</a><ul>
62     <li><a class="reference" href="#defining-accounts" id="id6" name="id6">Defining Accounts</a></li>
63     <li><a class="reference" href="#local-overrides" id="id7" name="id7">Local Overrides</a></li>
64     </ul>
65     </li>
66     <li><a class="reference" href="#developer-interface" id="id8" name="id8">Developer Interface</a><ul>
67     <li><a class="reference" href="#eusers-egroups" id="id9" name="id9">EUSERS + EGROUPS</a></li>
68     <li><a class="reference" href="#id1" id="id10" name="id10">Defining Accounts</a></li>
69     </ul>
70     </li>
71     <li><a class="reference" href="#user-interface" id="id11" name="id11">User Interface</a><ul>
72     <li><a class="reference" href="#users-update" id="id12" name="id12">users-update</a></li>
73     <li><a class="reference" href="#features-noautoaccts" id="id13" name="id13">FEATURES=noautoaccts</a></li>
74     </ul>
75     </li>
76     </ul>
77     </li>
78     <li><a class="reference" href="#rationale" id="id14" name="id14">Rationale</a></li>
79     <li><a class="reference" href="#backwards-compatibility" id="id15" name="id15">Backwards Compatibility</a></li>
80     <li><a class="reference" href="#references" id="id16" name="id16">References</a></li>
81     <li><a class="reference" href="#copyright" id="id17" name="id17">Copyright</a></li>
82     </ul>
83     </div>
84     <div class="section" id="abstract">
85     <h1><a class="toc-backref" href="#id2" name="abstract">Abstract</a></h1>
86     <p>The current handling of users and groups in the portage system lacks
87     policy and a decent API. We need an API that is both simple for
88     developers and end users.</p>
89     </div>
90     <div class="section" id="motivation">
91     <h1><a class="toc-backref" href="#id3" name="motivation">Motivation</a></h1>
92     <p>Currently the policy is left up to respective ebuild maintainers to
93     choose the username, id, shell settings, etc... and to have them added
94     in the right place at the right time in the right way. When the
95     addition of users was found to often times have broken logic, the
96     enewuser and enewgroup functions were designed to remove all the
97     details. However, these functions still suffer from some fundamental
98     problems. First, there is no local customization. Second, maintainers
99     still use the functions improperly (binary packages have suffered the
100     most thus far). Third, the functions are not portable across non-linux
101     systems and not friendly to cross compiling or other exotic setups.
102     There are other reasons, but these listed few are enough to warrant
103     change.</p>
104     </div>
105     <div class="section" id="specification">
106     <h1><a class="toc-backref" href="#id4" name="specification">Specification</a></h1>
107     <div class="section" id="portage-structure">
108     <h2><a class="toc-backref" href="#id5" name="portage-structure">Portage Structure</a></h2>
109     <div class="section" id="defining-accounts">
110     <h3><a class="toc-backref" href="#id6" name="defining-accounts">Defining Accounts</a></h3>
111     <p>A new directory will need to be added to the rsync tree to store the
112     files that define the default values for new accounts.</p>
113     <pre class="literal-block">
114     portage/profiles/accounts/
115     user/&lt;username&gt;.xml
116     group/&lt;groupname&gt;.xml
117     accounts.xml
118     </pre>
119     <p>The files are named with the respective user/group name since they need
120     to be unique in their respective domains. For example, the file
121     detailing the ntp user would be located accounts/user/ntp.xml. Each
122     username.xml file will detail the required information about each user.
123     Certain account features that exist on one class of systems (Linux) but
124     not on others (*BSD) can be tagged as such. Each groupname.xml will
125     follow similar guidelines. The accounts.xml will be used to describe
126     global account defaults such as the default range of 'valid system' ids.
127     For example, if the UID 123 is already used on a system, but the ntp
128     user defaults to '123', we obviously cannot just duplicate it. So we
129     would select the next available UID on the system based upon the range
130     defined here.</p>
131     </div>
132     <div class="section" id="local-overrides">
133     <h3><a class="toc-backref" href="#id7" name="local-overrides">Local Overrides</a></h3>
134     <p>Following the tried and true style of custom local portage files being
135     found in /etc/portage, this new system will follow the same. Users can
136     setup their own directory heirarchy in /etc/portage/accounts/ that mimics
137     the heirarchy found in the portage tree. When portage attempts to add a
138     new user, it will first check /etc/portage/accounts/user/&lt;username&gt;.xml.
139     If it does not exist, it will simply use the default definition in the
140     portage tree.</p>
141     </div>
142     </div>
143     <div class="section" id="developer-interface">
144     <h2><a class="toc-backref" href="#id8" name="developer-interface">Developer Interface</a></h2>
145     <div class="section" id="eusers-egroups">
146     <h3><a class="toc-backref" href="#id9" name="eusers-egroups">EUSERS + EGROUPS</a></h3>
147     <p>Ebuilds that wish to add users or groups to the system must set these
148     variables. They are both space delimited lists that tells portage what
149     users/groups must be added to the system before emerging the ebuild. The
150     maintainer of the ebuild can assume the users/groups they have listed
151     exist before the functions in the ebuild (pkg_setup, src_install, etc...)
152     are ever run.</p>
153     </div>
154     <div class="section" id="id1">
155     <h3><a class="toc-backref" href="#id10" name="id1">Defining Accounts</a></h3>
156     <p>Any developer is free to add users/groups in their ebuilds provided they
157     create the required account definition files.</p>
158     </div>
159     </div>
160     <div class="section" id="user-interface">
161     <h2><a class="toc-backref" href="#id11" name="user-interface">User Interface</a></h2>
162     <div class="section" id="users-update">
163     <h3><a class="toc-backref" href="#id12" name="users-update">users-update</a></h3>
164     <p>When this script is run, all the users/groups that have been added by
165     portage to the system will be shown along with the packages that have
166     added said users/groups. Here they can delete accounts that are no longer
167     required by the currently installed packages (and optionally run a
168     script that will try to locate all files on the system that may still be
169     owned by the account).</p>
170     </div>
171     <div class="section" id="features-noautoaccts">
172     <h3><a class="toc-backref" href="#id13" name="features-noautoaccts">FEATURES=noautoaccts</a></h3>
173     <p>This is for the people who never want portage creating accounts for them.
174     When portage needs to add an account to the system but &quot;noautoaccts&quot; is
175     in FEATURES, portage will abort with a message instructing the user to
176     add the accounts that are listed in EUSERS and EGROUPS. This is
177     obviously a required step before the package will be emerged.</p>
178     </div>
179     </div>
180     </div>
181     <div class="section" id="rationale">
182     <h1><a class="toc-backref" href="#id14" name="rationale">Rationale</a></h1>
183     <p>Developers no longer have to worry about how to properly add users/groups
184     to systems and worry about whether or not their code will work on all
185     systems (LDAP vs local shadow vs cross compile vs etc...). Users can
186     easily override the defaults Gentoo has before dictated. The default
187     passwd and group database can once again be trimmed down to the barest of
188     accounts.</p>
189     </div>
190     <div class="section" id="backwards-compatibility">
191     <h1><a class="toc-backref" href="#id15" name="backwards-compatibility">Backwards Compatibility</a></h1>
192     <p>Handled in similar fashion as other portage rollouts. When using the new
193     account system, add a DEPEND for the required version of portage to the
194     ebuild.</p>
195     </div>
196     <div class="section" id="references">
197     <h1><a class="toc-backref" href="#id16" name="references">References</a></h1>
198     <table class="footnote" frame="void" id="apibug" rules="none">
199     <colgroup><col class="label" /><col /></colgroup>
200     <tbody valign="top">
201     <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>
202     </tbody>
203     </table>
204     </div>
205     <div class="section" id="copyright">
206     <h1><a class="toc-backref" href="#id17" name="copyright">Copyright</a></h1>
207     <p>This document has been placed in the public domain.</p>
208     </div>
209     </div>
210    
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