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GLEP updates.

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12 <title>GLEP 27 -- Portage Management of UIDs/GIDs</title>
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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">1.3</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/xml/htdocs/proj/en/glep/glep-0027.txt?cvsroot=gentoo">2004/07/20 18:19:27</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-0012.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, 20-Jul-2004</td>
51 </tr>
52 </tbody>
53 </table>
54 <hr />
55 <div class="contents topic" id="contents">
56 <p class="topic-title first"><a name="contents">Contents</a></p>
57 <ul class="simple">
58 <li><a class="reference" href="#status" id="id2" name="id2">Status</a></li>
59 <li><a class="reference" href="#abstract" id="id3" name="id3">Abstract</a></li>
60 <li><a class="reference" href="#motivation" id="id4" name="id4">Motivation</a></li>
61 <li><a class="reference" href="#specification" id="id5" name="id5">Specification</a><ul>
62 <li><a class="reference" href="#portage-structure" id="id6" name="id6">Portage Structure</a><ul>
63 <li><a class="reference" href="#defining-accounts" id="id7" name="id7">Defining Accounts</a></li>
64 <li><a class="reference" href="#local-overrides" id="id8" name="id8">Local Overrides</a></li>
65 </ul>
66 </li>
67 <li><a class="reference" href="#developer-interface" id="id9" name="id9">Developer Interface</a><ul>
68 <li><a class="reference" href="#eusers-egroups" id="id10" name="id10">EUSERS + EGROUPS</a></li>
69 <li><a class="reference" href="#id1" id="id11" name="id11">Defining Accounts</a></li>
70 </ul>
71 </li>
72 <li><a class="reference" href="#user-interface" id="id12" name="id12">User Interface</a><ul>
73 <li><a class="reference" href="#users-update" id="id13" name="id13">users-update</a></li>
74 <li><a class="reference" href="#features-noautoaccts" id="id14" name="id14">FEATURES=noautoaccts</a></li>
75 </ul>
76 </li>
77 </ul>
78 </li>
79 <li><a class="reference" href="#rationale" id="id15" name="id15">Rationale</a></li>
80 <li><a class="reference" href="#backwards-compatibility" id="id16" name="id16">Backwards Compatibility</a></li>
81 <li><a class="reference" href="#references" id="id17" name="id17">References</a></li>
82 <li><a class="reference" href="#copyright" id="id18" name="id18">Copyright</a></li>
83 </ul>
84 </div>
85 <div class="section" id="status">
86 <h1><a class="toc-backref" href="#id2" name="status">Status</a></h1>
87 <p>This GLEP was approved as-is on 14-Jun-2004.</p>
88 </div>
89 <div class="section" id="abstract">
90 <h1><a class="toc-backref" href="#id3" name="abstract">Abstract</a></h1>
91 <p>The current handling of users and groups in the portage system lacks
92 policy and a decent API. We need an API that is both simple for
93 developers and end users.</p>
94 </div>
95 <div class="section" id="motivation">
96 <h1><a class="toc-backref" href="#id4" name="motivation">Motivation</a></h1>
97 <p>Currently the policy is left up to respective ebuild maintainers to
98 choose the username, id, shell settings, etc... and to have them added
99 in the right place at the right time in the right way. When the
100 addition of users was found to often times have broken logic, the
101 enewuser and enewgroup functions were designed to remove all the
102 details. However, these functions still suffer from some fundamental
103 problems. First, there is no local customization. Second, maintainers
104 still use the functions improperly (binary packages have suffered the
105 most thus far). Third, the functions are not portable across non-linux
106 systems and not friendly to cross compiling or other exotic setups.
107 There are other reasons, but these listed few are enough to warrant
108 change.</p>
109 </div>
110 <div class="section" id="specification">
111 <h1><a class="toc-backref" href="#id5" name="specification">Specification</a></h1>
112 <div class="section" id="portage-structure">
113 <h2><a class="toc-backref" href="#id6" name="portage-structure">Portage Structure</a></h2>
114 <div class="section" id="defining-accounts">
115 <h3><a class="toc-backref" href="#id7" name="defining-accounts">Defining Accounts</a></h3>
116 <p>A new directory will need to be added to the rsync tree to store the
117 files that define the default values for new accounts.</p>
118 <pre class="literal-block">
119 portage/profiles/accounts/
120 user/&lt;username&gt;.xml
121 group/&lt;groupname&gt;.xml
122 accounts.xml
123 </pre>
124 <p>The files are named with the respective user/group name since they need
125 to be unique in their respective domains. For example, the file
126 detailing the ntp user would be located accounts/user/ntp.xml. Each
127 username.xml file will detail the required information about each user.
128 Certain account features that exist on one class of systems (Linux) but
129 not on others (*BSD) can be tagged as such. Each groupname.xml will
130 follow similar guidelines. The accounts.xml will be used to describe
131 global account defaults such as the default range of 'valid system' ids.
132 For example, if the UID 123 is already used on a system, but the ntp
133 user defaults to '123', we obviously cannot just duplicate it. So we
134 would select the next available UID on the system based upon the range
135 defined here.</p>
136 </div>
137 <div class="section" id="local-overrides">
138 <h3><a class="toc-backref" href="#id8" name="local-overrides">Local Overrides</a></h3>
139 <p>Following the tried and true style of custom local portage files being
140 found in /etc/portage, this new system will follow the same. Users can
141 setup their own directory heirarchy in /etc/portage/accounts/ that mimics
142 the heirarchy found in the portage tree. When portage attempts to add a
143 new user, it will first check /etc/portage/accounts/user/&lt;username&gt;.xml.
144 If it does not exist, it will simply use the default definition in the
145 portage tree.</p>
146 </div>
147 </div>
148 <div class="section" id="developer-interface">
149 <h2><a class="toc-backref" href="#id9" name="developer-interface">Developer Interface</a></h2>
150 <div class="section" id="eusers-egroups">
151 <h3><a class="toc-backref" href="#id10" name="eusers-egroups">EUSERS + EGROUPS</a></h3>
152 <p>Ebuilds that wish to add users or groups to the system must set these
153 variables. They are both space delimited lists that tells portage what
154 users/groups must be added to the system before emerging the ebuild. The
155 maintainer of the ebuild can assume the users/groups they have listed
156 exist before the functions in the ebuild (pkg_setup, src_install, etc...)
157 are ever run.</p>
158 </div>
159 <div class="section" id="id1">
160 <h3><a class="toc-backref" href="#id11" name="id1">Defining Accounts</a></h3>
161 <p>Any developer is free to add users/groups in their ebuilds provided they
162 create the required account definition files.</p>
163 </div>
164 </div>
165 <div class="section" id="user-interface">
166 <h2><a class="toc-backref" href="#id12" name="user-interface">User Interface</a></h2>
167 <div class="section" id="users-update">
168 <h3><a class="toc-backref" href="#id13" name="users-update">users-update</a></h3>
169 <p>When this script is run, all the users/groups that have been added by
170 portage to the system will be shown along with the packages that have
171 added said users/groups. Here they can delete accounts that are no longer
172 required by the currently installed packages (and optionally run a
173 script that will try to locate all files on the system that may still be
174 owned by the account).</p>
175 </div>
176 <div class="section" id="features-noautoaccts">
177 <h3><a class="toc-backref" href="#id14" name="features-noautoaccts">FEATURES=noautoaccts</a></h3>
178 <p>This is for the people who never want portage creating accounts for them.
179 When portage needs to add an account to the system but &quot;noautoaccts&quot; is
180 in FEATURES, portage will abort with a message instructing the user to
181 add the accounts that are listed in EUSERS and EGROUPS. This is
182 obviously a required step before the package will be emerged.</p>
183 </div>
184 </div>
185 </div>
186 <div class="section" id="rationale">
187 <h1><a class="toc-backref" href="#id15" name="rationale">Rationale</a></h1>
188 <p>Developers no longer have to worry about how to properly add users/groups
189 to systems and worry about whether or not their code will work on all
190 systems (LDAP vs local shadow vs cross compile vs etc...). Users can
191 easily override the defaults Gentoo has before dictated. The default
192 passwd and group database can once again be trimmed down to the barest of
193 accounts.</p>
194 </div>
195 <div class="section" id="backwards-compatibility">
196 <h1><a class="toc-backref" href="#id16" name="backwards-compatibility">Backwards Compatibility</a></h1>
197 <p>Handled in similar fashion as other portage rollouts. When using the new
198 account system, add a DEPEND for the required version of portage to the
199 ebuild.</p>
200 </div>
201 <div class="section" id="references">
202 <h1><a class="toc-backref" href="#id17" name="references">References</a></h1>
203 <table class="footnote" frame="void" id="apibug" rules="none">
204 <colgroup><col class="label" /><col /></colgroup>
205 <tbody valign="top">
206 <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>
207 </tbody>
208 </table>
209 </div>
210 <div class="section" id="copyright">
211 <h1><a class="toc-backref" href="#id18" name="copyright">Copyright</a></h1>
212 <p>This document has been placed in the public domain.</p>
213 </div>
214 </div>
215
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