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12 <title>GLEP 27 -- Portage Management of UIDs/GIDs</title>
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31 <tr class="field"><th class="field-name">GLEP:</th><td class="field-body">27</td>
32 </tr>
33 <tr class="field"><th class="field-name">Title:</th><td class="field-body">Portage Management of UIDs/GIDs</td>
34 </tr>
35 <tr class="field"><th class="field-name">Version:</th><td class="field-body">1.4</td>
36 </tr>
37 <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">2005/09/15 02:39:54</a></td>
38 </tr>
39 <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>
40 </tr>
41 <tr class="field"><th class="field-name">Status:</th><td class="field-body">Approved</td>
42 </tr>
43 <tr class="field"><th class="field-name">Type:</th><td class="field-body">Standards Track</td>
44 </tr>
45 <tr class="field"><th class="field-name">Content-Type:</th><td class="field-body"><a class="reference" href="http://www.python.org/peps/glep-0012.html">text/x-rst</a></td>
46 </tr>
47 <tr class="field"><th class="field-name">Created:</th><td class="field-body">29 May 2004</td>
48 </tr>
49 <tr class="field"><th class="field-name">Post-History:</th><td class="field-body">29-May-2004, 20-Jul-2004</td>
50 </tr>
51 </tbody>
52 </table>
53 <hr />
54 <div class="contents topic" id="contents">
55 <p class="topic-title first"><a name="contents">Contents</a></p>
56 <ul class="simple">
57 <li><a class="reference" href="#status" id="id2" name="id2">Status</a></li>
58 <li><a class="reference" href="#abstract" id="id3" name="id3">Abstract</a></li>
59 <li><a class="reference" href="#motivation" id="id4" name="id4">Motivation</a></li>
60 <li><a class="reference" href="#specification" id="id5" name="id5">Specification</a><ul>
61 <li><a class="reference" href="#portage-structure" id="id6" name="id6">Portage Structure</a><ul>
62 <li><a class="reference" href="#defining-accounts" id="id7" name="id7">Defining Accounts</a></li>
63 <li><a class="reference" href="#local-overrides" id="id8" name="id8">Local Overrides</a></li>
64 </ul>
65 </li>
66 <li><a class="reference" href="#developer-interface" id="id9" name="id9">Developer Interface</a><ul>
67 <li><a class="reference" href="#eusers-egroups" id="id10" name="id10">EUSERS + EGROUPS</a></li>
68 <li><a class="reference" href="#id1" id="id11" name="id11">Defining Accounts</a></li>
69 </ul>
70 </li>
71 <li><a class="reference" href="#user-interface" id="id12" name="id12">User Interface</a><ul>
72 <li><a class="reference" href="#users-update" id="id13" name="id13">users-update</a></li>
73 <li><a class="reference" href="#features-noautoaccts" id="id14" name="id14">FEATURES=noautoaccts</a></li>
74 </ul>
75 </li>
76 </ul>
77 </li>
78 <li><a class="reference" href="#rationale" id="id15" name="id15">Rationale</a></li>
79 <li><a class="reference" href="#backwards-compatibility" id="id16" name="id16">Backwards Compatibility</a></li>
80 <li><a class="reference" href="#references" id="id17" name="id17">References</a></li>
81 <li><a class="reference" href="#copyright" id="id18" name="id18">Copyright</a></li>
82 </ul>
83 </div>
84 <div class="section" id="status">
85 <h1><a class="toc-backref" href="#id2" name="status">Status</a></h1>
86 <p>This GLEP was approved as-is on 14-Jun-2004.</p>
87 </div>
88 <div class="section" id="abstract">
89 <h1><a class="toc-backref" href="#id3" name="abstract">Abstract</a></h1>
90 <p>The current handling of users and groups in the portage system lacks
91 policy and a decent API. We need an API that is both simple for
92 developers and end users.</p>
93 </div>
94 <div class="section" id="motivation">
95 <h1><a class="toc-backref" href="#id4" name="motivation">Motivation</a></h1>
96 <p>Currently the policy is left up to respective ebuild maintainers to
97 choose the username, id, shell settings, etc... and to have them added
98 in the right place at the right time in the right way. When the
99 addition of users was found to often times have broken logic, the
100 enewuser and enewgroup functions were designed to remove all the
101 details. However, these functions still suffer from some fundamental
102 problems. First, there is no local customization. Second, maintainers
103 still use the functions improperly (binary packages have suffered the
104 most thus far). Third, the functions are not portable across non-linux
105 systems and not friendly to cross compiling or other exotic setups.
106 There are other reasons, but these listed few are enough to warrant
107 change.</p>
108 </div>
109 <div class="section" id="specification">
110 <h1><a class="toc-backref" href="#id5" name="specification">Specification</a></h1>
111 <div class="section" id="portage-structure">
112 <h2><a class="toc-backref" href="#id6" name="portage-structure">Portage Structure</a></h2>
113 <div class="section" id="defining-accounts">
114 <h3><a class="toc-backref" href="#id7" name="defining-accounts">Defining Accounts</a></h3>
115 <p>New directories will need to be added to the rsync tree to store the files
116 that define the default values for new accounts. They will be stored on a
117 per-profile basis, that way sub-profiles may easily override parent profiles.
118 The default location will be the base profile since all other profiles inherit
119 from there.</p>
120 <pre class="literal-block">
121 portage/profiles/base/accounts/
122 user/&lt;username&gt;
123 group/&lt;groupname&gt;
124 accounts
125 </pre>
126 <p>The files are named with the respective user/group name since they need
127 to be unique in their respective domains. For example, the file
128 detailing the ntp user would be located accounts/user/ntp. Each
129 username file will detail the required information about each user.
130 Certain account features that exist on one class of systems (Linux) but
131 not on others (*BSD) can be redefined in their respective subprofiles. Each
132 groupname will follow similar guidelines. The accounts file will be used to
133 describe global account defaults such as the default range of 'valid system'
134 ids. For example, if the UID 123 is already used on a system, but the ntp
135 user defaults to '123', we obviously cannot just duplicate it. So we
136 would select the next available UID on the system based upon the range
137 defined here.</p>
138 </div>
139 <div class="section" id="local-overrides">
140 <h3><a class="toc-backref" href="#id8" name="local-overrides">Local Overrides</a></h3>
141 <p>Following the tried and true style of custom local portage files being
142 found in /etc/portage, this new system will follow the same. Users can
143 setup their own directory heirarchy in /etc/portage/profile/accounts/ that
144 mimics the heirarchy found in the portage tree. When portage attempts to add
145 a new user, it will first check /etc/portage/profile/accounts/user/&lt;username&gt;.
146 If it does not exist, it will simply use the default definition in the
147 portage tree.</p>
148 </div>
149 </div>
150 <div class="section" id="developer-interface">
151 <h2><a class="toc-backref" href="#id9" name="developer-interface">Developer Interface</a></h2>
152 <div class="section" id="eusers-egroups">
153 <h3><a class="toc-backref" href="#id10" name="eusers-egroups">EUSERS + EGROUPS</a></h3>
154 <p>Ebuilds that wish to add users or groups to the system must set these
155 variables. They are both space delimited lists that tells portage what
156 users/groups must be added to the system before emerging the ebuild. The
157 maintainer of the ebuild can assume the users/groups they have listed
158 exist before the functions in the ebuild (pkg_setup, src_install, etc...)
159 are ever run.</p>
160 </div>
161 <div class="section" id="id1">
162 <h3><a class="toc-backref" href="#id11" name="id1">Defining Accounts</a></h3>
163 <p>Any developer is free to add users/groups in their ebuilds provided they
164 create the required account definition files.</p>
165 </div>
166 </div>
167 <div class="section" id="user-interface">
168 <h2><a class="toc-backref" href="#id12" name="user-interface">User Interface</a></h2>
169 <div class="section" id="users-update">
170 <h3><a class="toc-backref" href="#id13" name="users-update">users-update</a></h3>
171 <p>When this script is run, all the users/groups that have been added by
172 portage to the system will be shown along with the packages that have
173 added said users/groups. Here they can delete accounts that are no longer
174 required by the currently installed packages (and optionally run a
175 script that will try to locate all files on the system that may still be
176 owned by the account).</p>
177 </div>
178 <div class="section" id="features-noautoaccts">
179 <h3><a class="toc-backref" href="#id14" name="features-noautoaccts">FEATURES=noautoaccts</a></h3>
180 <p>This is for the people who never want portage creating accounts for them.
181 When portage needs to add an account to the system but &quot;noautoaccts&quot; is
182 in FEATURES, portage will abort with a message instructing the user to
183 add the accounts that are listed in EUSERS and EGROUPS. This is
184 obviously a required step before the package will be emerged.</p>
185 </div>
186 </div>
187 </div>
188 <div class="section" id="rationale">
189 <h1><a class="toc-backref" href="#id15" name="rationale">Rationale</a></h1>
190 <p>Developers no longer have to worry about how to properly add users/groups
191 to systems and worry about whether or not their code will work on all
192 systems (LDAP vs local shadow vs cross compile vs etc...). Users can
193 easily override the defaults Gentoo has before dictated. The default
194 passwd and group database can once again be trimmed down to the barest of
195 accounts.</p>
196 </div>
197 <div class="section" id="backwards-compatibility">
198 <h1><a class="toc-backref" href="#id16" name="backwards-compatibility">Backwards Compatibility</a></h1>
199 <p>Handled in similar fashion as other portage rollouts. When using the new
200 account system, add a DEPEND for the required version of portage to the
201 ebuild.</p>
202 </div>
203 <div class="section" id="references">
204 <h1><a class="toc-backref" href="#id17" name="references">References</a></h1>
205 <table class="docutils footnote" frame="void" id="apibug" rules="none">
206 <colgroup><col class="label" /><col /></colgroup>
207 <tbody valign="top">
208 <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>
209 </tbody>
210 </table>
211 </div>
212 <div class="section" id="copyright">
213 <h1><a class="toc-backref" href="#id18" name="copyright">Copyright</a></h1>
214 <p>This document has been placed in the public domain.</p>
215 </div>
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