Autogenerated HTML docs for v1.7.7-290-gc9e7aa
[git/jnareb-git.git] / gitnamespaces.html
blob712202ada0e4cb2042a7b22da1a6305d3ddeaa09
1 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
2 "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
3 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
4 <head>
5 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
6 <meta name="generator" content="AsciiDoc 8.5.2" />
7 <title>gitnamespaces(7)</title>
8 <style type="text/css">
9 /* Debug borders */
10 p, li, dt, dd, div, pre, h1, h2, h3, h4, h5, h6 {
12 border: 1px solid red;
16 body {
17 margin: 1em 5% 1em 5%;
20 a {
21 color: blue;
22 text-decoration: underline;
24 a:visited {
25 color: fuchsia;
28 em {
29 font-style: italic;
30 color: navy;
33 strong {
34 font-weight: bold;
35 color: #083194;
38 tt {
39 color: navy;
42 h1, h2, h3, h4, h5, h6 {
43 color: #527bbd;
44 font-family: sans-serif;
45 margin-top: 1.2em;
46 margin-bottom: 0.5em;
47 line-height: 1.3;
50 h1, h2, h3 {
51 border-bottom: 2px solid silver;
53 h2 {
54 padding-top: 0.5em;
56 h3 {
57 float: left;
59 h3 + * {
60 clear: left;
63 div.sectionbody {
64 font-family: serif;
65 margin-left: 0;
68 hr {
69 border: 1px solid silver;
72 p {
73 margin-top: 0.5em;
74 margin-bottom: 0.5em;
77 ul, ol, li > p {
78 margin-top: 0;
81 pre {
82 padding: 0;
83 margin: 0;
86 span#author {
87 color: #527bbd;
88 font-family: sans-serif;
89 font-weight: bold;
90 font-size: 1.1em;
92 span#email {
94 span#revnumber, span#revdate, span#revremark {
95 font-family: sans-serif;
98 div#footer {
99 font-family: sans-serif;
100 font-size: small;
101 border-top: 2px solid silver;
102 padding-top: 0.5em;
103 margin-top: 4.0em;
105 div#footer-text {
106 float: left;
107 padding-bottom: 0.5em;
109 div#footer-badges {
110 float: right;
111 padding-bottom: 0.5em;
114 div#preamble {
115 margin-top: 1.5em;
116 margin-bottom: 1.5em;
118 div.tableblock, div.imageblock, div.exampleblock, div.verseblock,
119 div.quoteblock, div.literalblock, div.listingblock, div.sidebarblock,
120 div.admonitionblock {
121 margin-top: 1.0em;
122 margin-bottom: 1.5em;
124 div.admonitionblock {
125 margin-top: 2.0em;
126 margin-bottom: 2.0em;
127 margin-right: 10%;
128 color: #606060;
131 div.content { /* Block element content. */
132 padding: 0;
135 /* Block element titles. */
136 div.title, caption.title {
137 color: #527bbd;
138 font-family: sans-serif;
139 font-weight: bold;
140 text-align: left;
141 margin-top: 1.0em;
142 margin-bottom: 0.5em;
144 div.title + * {
145 margin-top: 0;
148 td div.title:first-child {
149 margin-top: 0.0em;
151 div.content div.title:first-child {
152 margin-top: 0.0em;
154 div.content + div.title {
155 margin-top: 0.0em;
158 div.sidebarblock > div.content {
159 background: #ffffee;
160 border: 1px solid silver;
161 padding: 0.5em;
164 div.listingblock > div.content {
165 border: 1px solid silver;
166 background: #f4f4f4;
167 padding: 0.5em;
170 div.quoteblock, div.verseblock {
171 padding-left: 1.0em;
172 margin-left: 1.0em;
173 margin-right: 10%;
174 border-left: 5px solid #dddddd;
175 color: #777777;
178 div.quoteblock > div.attribution {
179 padding-top: 0.5em;
180 text-align: right;
183 div.verseblock > div.content {
184 white-space: pre;
186 div.verseblock > div.attribution {
187 padding-top: 0.75em;
188 text-align: left;
190 /* DEPRECATED: Pre version 8.2.7 verse style literal block. */
191 div.verseblock + div.attribution {
192 text-align: left;
195 div.admonitionblock .icon {
196 vertical-align: top;
197 font-size: 1.1em;
198 font-weight: bold;
199 text-decoration: underline;
200 color: #527bbd;
201 padding-right: 0.5em;
203 div.admonitionblock td.content {
204 padding-left: 0.5em;
205 border-left: 3px solid #dddddd;
208 div.exampleblock > div.content {
209 border-left: 3px solid #dddddd;
210 padding-left: 0.5em;
213 div.imageblock div.content { padding-left: 0; }
214 span.image img { border-style: none; }
215 a.image:visited { color: white; }
217 dl {
218 margin-top: 0.8em;
219 margin-bottom: 0.8em;
221 dt {
222 margin-top: 0.5em;
223 margin-bottom: 0;
224 font-style: normal;
225 color: navy;
227 dd > *:first-child {
228 margin-top: 0.1em;
231 ul, ol {
232 list-style-position: outside;
234 ol.arabic {
235 list-style-type: decimal;
237 ol.loweralpha {
238 list-style-type: lower-alpha;
240 ol.upperalpha {
241 list-style-type: upper-alpha;
243 ol.lowerroman {
244 list-style-type: lower-roman;
246 ol.upperroman {
247 list-style-type: upper-roman;
250 div.compact ul, div.compact ol,
251 div.compact p, div.compact p,
252 div.compact div, div.compact div {
253 margin-top: 0.1em;
254 margin-bottom: 0.1em;
257 div.tableblock > table {
258 border: 3px solid #527bbd;
260 thead, p.table.header {
261 font-family: sans-serif;
262 font-weight: bold;
264 tfoot {
265 font-weight: bold;
267 td > div.verse {
268 white-space: pre;
270 p.table {
271 margin-top: 0;
273 /* Because the table frame attribute is overriden by CSS in most browsers. */
274 div.tableblock > table[frame="void"] {
275 border-style: none;
277 div.tableblock > table[frame="hsides"] {
278 border-left-style: none;
279 border-right-style: none;
281 div.tableblock > table[frame="vsides"] {
282 border-top-style: none;
283 border-bottom-style: none;
287 div.hdlist {
288 margin-top: 0.8em;
289 margin-bottom: 0.8em;
291 div.hdlist tr {
292 padding-bottom: 15px;
294 dt.hdlist1.strong, td.hdlist1.strong {
295 font-weight: bold;
297 td.hdlist1 {
298 vertical-align: top;
299 font-style: normal;
300 padding-right: 0.8em;
301 color: navy;
303 td.hdlist2 {
304 vertical-align: top;
306 div.hdlist.compact tr {
307 margin: 0;
308 padding-bottom: 0;
311 .comment {
312 background: yellow;
315 .footnote, .footnoteref {
316 font-size: 0.8em;
319 span.footnote, span.footnoteref {
320 vertical-align: super;
323 #footnotes {
324 margin: 20px 0 20px 0;
325 padding: 7px 0 0 0;
328 #footnotes div.footnote {
329 margin: 0 0 5px 0;
332 #footnotes hr {
333 border: none;
334 border-top: 1px solid silver;
335 height: 1px;
336 text-align: left;
337 margin-left: 0;
338 width: 20%;
339 min-width: 100px;
343 @media print {
344 div#footer-badges { display: none; }
347 div#toc {
348 margin-bottom: 2.5em;
351 div#toctitle {
352 color: #527bbd;
353 font-family: sans-serif;
354 font-size: 1.1em;
355 font-weight: bold;
356 margin-top: 1.0em;
357 margin-bottom: 0.1em;
360 div.toclevel1, div.toclevel2, div.toclevel3, div.toclevel4 {
361 margin-top: 0;
362 margin-bottom: 0;
364 div.toclevel2 {
365 margin-left: 2em;
366 font-size: 0.9em;
368 div.toclevel3 {
369 margin-left: 4em;
370 font-size: 0.9em;
372 div.toclevel4 {
373 margin-left: 6em;
374 font-size: 0.9em;
376 /* Overrides for manpage documents */
377 h1 {
378 padding-top: 0.5em;
379 padding-bottom: 0.5em;
380 border-top: 2px solid silver;
381 border-bottom: 2px solid silver;
383 h2 {
384 border-style: none;
386 div.sectionbody {
387 margin-left: 5%;
390 @media print {
391 div#toc { display: none; }
394 /* Workarounds for IE6's broken and incomplete CSS2. */
396 div.sidebar-content {
397 background: #ffffee;
398 border: 1px solid silver;
399 padding: 0.5em;
401 div.sidebar-title, div.image-title {
402 color: #527bbd;
403 font-family: sans-serif;
404 font-weight: bold;
405 margin-top: 0.0em;
406 margin-bottom: 0.5em;
409 div.listingblock div.content {
410 border: 1px solid silver;
411 background: #f4f4f4;
412 padding: 0.5em;
415 div.quoteblock-attribution {
416 padding-top: 0.5em;
417 text-align: right;
420 div.verseblock-content {
421 white-space: pre;
423 div.verseblock-attribution {
424 padding-top: 0.75em;
425 text-align: left;
428 div.exampleblock-content {
429 border-left: 3px solid #dddddd;
430 padding-left: 0.5em;
433 /* IE6 sets dynamically generated links as visited. */
434 div#toc a:visited { color: blue; }
435 </style>
436 <script type="text/javascript">
437 /*<![CDATA[*/
438 window.onload = function(){asciidoc.footnotes();}
439 var asciidoc = { // Namespace.
441 /////////////////////////////////////////////////////////////////////
442 // Table Of Contents generator
443 /////////////////////////////////////////////////////////////////////
445 /* Author: Mihai Bazon, September 2002
446 * http://students.infoiasi.ro/~mishoo
448 * Table Of Content generator
449 * Version: 0.4
451 * Feel free to use this script under the terms of the GNU General Public
452 * License, as long as you do not remove or alter this notice.
455 /* modified by Troy D. Hanson, September 2006. License: GPL */
456 /* modified by Stuart Rackham, 2006, 2009. License: GPL */
458 // toclevels = 1..4.
459 toc: function (toclevels) {
461 function getText(el) {
462 var text = "";
463 for (var i = el.firstChild; i != null; i = i.nextSibling) {
464 if (i.nodeType == 3 /* Node.TEXT_NODE */) // IE doesn't speak constants.
465 text += i.data;
466 else if (i.firstChild != null)
467 text += getText(i);
469 return text;
472 function TocEntry(el, text, toclevel) {
473 this.element = el;
474 this.text = text;
475 this.toclevel = toclevel;
478 function tocEntries(el, toclevels) {
479 var result = new Array;
480 var re = new RegExp('[hH]([2-'+(toclevels+1)+'])');
481 // Function that scans the DOM tree for header elements (the DOM2
482 // nodeIterator API would be a better technique but not supported by all
483 // browsers).
484 var iterate = function (el) {
485 for (var i = el.firstChild; i != null; i = i.nextSibling) {
486 if (i.nodeType == 1 /* Node.ELEMENT_NODE */) {
487 var mo = re.exec(i.tagName);
488 if (mo && (i.getAttribute("class") || i.getAttribute("className")) != "float") {
489 result[result.length] = new TocEntry(i, getText(i), mo[1]-1);
491 iterate(i);
495 iterate(el);
496 return result;
499 var toc = document.getElementById("toc");
500 var entries = tocEntries(document.getElementById("content"), toclevels);
501 for (var i = 0; i < entries.length; ++i) {
502 var entry = entries[i];
503 if (entry.element.id == "")
504 entry.element.id = "_toc_" + i;
505 var a = document.createElement("a");
506 a.href = "#" + entry.element.id;
507 a.appendChild(document.createTextNode(entry.text));
508 var div = document.createElement("div");
509 div.appendChild(a);
510 div.className = "toclevel" + entry.toclevel;
511 toc.appendChild(div);
513 if (entries.length == 0)
514 toc.parentNode.removeChild(toc);
518 /////////////////////////////////////////////////////////////////////
519 // Footnotes generator
520 /////////////////////////////////////////////////////////////////////
522 /* Based on footnote generation code from:
523 * http://www.brandspankingnew.net/archive/2005/07/format_footnote.html
526 footnotes: function () {
527 var cont = document.getElementById("content");
528 var noteholder = document.getElementById("footnotes");
529 var spans = cont.getElementsByTagName("span");
530 var refs = {};
531 var n = 0;
532 for (i=0; i<spans.length; i++) {
533 if (spans[i].className == "footnote") {
534 n++;
535 // Use [\s\S] in place of . so multi-line matches work.
536 // Because JavaScript has no s (dotall) regex flag.
537 note = spans[i].innerHTML.match(/\s*\[([\s\S]*)]\s*/)[1];
538 noteholder.innerHTML +=
539 "<div class='footnote' id='_footnote_" + n + "'>" +
540 "<a href='#_footnoteref_" + n + "' title='Return to text'>" +
541 n + "</a>. " + note + "</div>";
542 spans[i].innerHTML =
543 "[<a id='_footnoteref_" + n + "' href='#_footnote_" + n +
544 "' title='View footnote' class='footnote'>" + n + "</a>]";
545 var id =spans[i].getAttribute("id");
546 if (id != null) refs["#"+id] = n;
549 if (n == 0)
550 noteholder.parentNode.removeChild(noteholder);
551 else {
552 // Process footnoterefs.
553 for (i=0; i<spans.length; i++) {
554 if (spans[i].className == "footnoteref") {
555 var href = spans[i].getElementsByTagName("a")[0].getAttribute("href");
556 href = href.match(/#.*/)[0]; // Because IE return full URL.
557 n = refs[href];
558 spans[i].innerHTML =
559 "[<a href='#_footnote_" + n +
560 "' title='View footnote' class='footnote'>" + n + "</a>]";
567 /*]]>*/
568 </script>
569 </head>
570 <body>
571 <div id="header">
572 <h1>
573 gitnamespaces(7) Manual Page
574 </h1>
575 <h2>NAME</h2>
576 <div class="sectionbody">
577 <p>gitnamespaces -
578 Git namespaces
579 </p>
580 </div>
581 </div>
582 <div id="content">
583 <h2 id="_synopsis">SYNOPSIS</h2>
584 <div class="sectionbody">
585 <div class="verseblock">
586 <div class="verseblock-content">GIT_NAMESPACE=&lt;namespace&gt; <em>git upload-pack</em>
587 GIT_NAMESPACE=&lt;namespace&gt; <em>git receive-pack</em></div>
588 <div class="verseblock-attribution">
589 </div></div>
590 </div>
591 <h2 id="_description">DESCRIPTION</h2>
592 <div class="sectionbody">
593 <div class="paragraph"><p>Git supports dividing the refs of a single repository into multiple
594 namespaces, each of which has its own branches, tags, and HEAD. Git can
595 expose each namespace as an independent repository to pull from and push
596 to, while sharing the object store, and exposing all the refs to
597 operations such as <a href="git-gc.html">git-gc(1)</a>.</p></div>
598 <div class="paragraph"><p>Storing multiple repositories as namespaces of a single repository
599 avoids storing duplicate copies of the same objects, such as when
600 storing multiple branches of the same source. The alternates mechanism
601 provides similar support for avoiding duplicates, but alternates do not
602 prevent duplication between new objects added to the repositories
603 without ongoing maintenance, while namespaces do.</p></div>
604 <div class="paragraph"><p>To specify a namespace, set the <tt>GIT_NAMESPACE</tt> environment variable to
605 the namespace. For each ref namespace, git stores the corresponding
606 refs in a directory under <tt>refs/namespaces/</tt>. For example,
607 <tt>GIT_NAMESPACE=foo</tt> will store refs under <tt>refs/namespaces/foo/</tt>. You
608 can also specify namespaces via the <tt>--namespace</tt> option to
609 <a href="git.html">git(1)</a>.</p></div>
610 <div class="paragraph"><p>Note that namespaces which include a <tt>/</tt> will expand to a hierarchy of
611 namespaces; for example, <tt>GIT_NAMESPACE=foo/bar</tt> will store refs under
612 <tt>refs/namespaces/foo/refs/namespaces/bar/</tt>. This makes paths in
613 <tt>GIT_NAMESPACE</tt> behave hierarchically, so that cloning with
614 <tt>GIT_NAMESPACE=foo/bar</tt> produces the same result as cloning with
615 <tt>GIT_NAMESPACE=foo</tt> and cloning from that repo with <tt>GIT_NAMESPACE=bar</tt>. It
616 also avoids ambiguity with strange namespace paths such as <tt>foo/refs/heads/</tt>,
617 which could otherwise generate directory/file conflicts within the <tt>refs</tt>
618 directory.</p></div>
619 <div class="paragraph"><p><a href="git-upload-pack.html">git-upload-pack(1)</a> and <a href="git-receive-pack.html">git-receive-pack(1)</a> rewrite the
620 names of refs as specified by <tt>GIT_NAMESPACE</tt>. git-upload-pack and
621 git-receive-pack will ignore all references outside the specified
622 namespace.</p></div>
623 <div class="paragraph"><p>The smart HTTP server, <a href="git-http-backend.html">git-http-backend(1)</a>, will pass
624 GIT_NAMESPACE through to the backend programs; see
625 <a href="git-http-backend.html">git-http-backend(1)</a> for sample configuration to expose
626 repository namespaces as repositories.</p></div>
627 <div class="paragraph"><p>For a simple local test, you can use <a href="git-remote-ext.html">git-remote-ext(1)</a>:</p></div>
628 <div class="listingblock">
629 <div class="content">
630 <pre><tt>git clone ext::'git --namespace=foo %s /tmp/prefixed.git'</tt></pre>
631 </div></div>
632 </div>
633 <h2 id="_security">SECURITY</h2>
634 <div class="sectionbody">
635 <div class="paragraph"><p>Anyone with access to any namespace within a repository can potentially
636 access objects from any other namespace stored in the same repository.
637 You can&#8217;t directly say "give me object ABCD" if you don&#8217;t have a ref to
638 it, but you can do some other sneaky things like:</p></div>
639 <div class="olist arabic"><ol class="arabic">
640 <li>
642 Claiming to push ABCD, at which point the server will optimize out the
643 need for you to actually send it. Now you have a ref to ABCD and can
644 fetch it (claiming not to have it, of course).
645 </p>
646 </li>
647 <li>
649 Requesting other refs, claiming that you have ABCD, at which point the
650 server may generate deltas against ABCD.
651 </p>
652 </li>
653 </ol></div>
654 <div class="paragraph"><p>None of this causes a problem if you only host public repositories, or
655 if everyone who may read one namespace may also read everything in every
656 other namespace (for instance, if everyone in an organization has read
657 permission to every repository).</p></div>
658 </div>
659 </div>
660 <div id="footnotes"><hr /></div>
661 <div id="footer">
662 <div id="footer-text">
663 Last updated 2011-09-26 21:22:29 PDT
664 </div>
665 </div>
666 </body>
667 </html>