diff options
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/index.html | 6 | ||||
| -rw-r--r-- | doc/s6-hiercopy.html | 66 | ||||
| -rw-r--r-- | doc/upgrade.html | 8 |
3 files changed, 78 insertions, 2 deletions
diff --git a/doc/index.html b/doc/index.html index 5d00821..95b4372 100644 --- a/doc/index.html +++ b/doc/index.html @@ -60,7 +60,9 @@ the package is now used to host specific utilities such as <li> A POSIX-compliant system with a standard C development environment </li> <li> GNU make, version 4.0 or later </li> <li> <a href="http://skarnet.org/software/skalibs/">skalibs</a> version -2.2.0.0 or later </li> +2.3.1.0 or later. It's a build-time requirement. It's also a run-time +requirement if you link against the shared version of the skalibs +library. </li> </ul> <h3> Licensing </h3> @@ -74,7 +76,7 @@ the package is now used to host specific utilities such as <ul> <li> The current released version of s6-portable-utils is -<a href="s6-portable-utils-2.0.1.0.tar.gz">2.0.1.0</a>. </li> +<a href="s6-portable-utils-2.0.2.0.tar.gz">2.0.2.0</a>. </li> <li> Alternatively, you can checkout a copy of the s6-portable-utils git repository: <pre> git clone git://git.skarnet.org/s6-portable-utils </pre> </li> </ul> diff --git a/doc/s6-hiercopy.html b/doc/s6-hiercopy.html new file mode 100644 index 0000000..a4c12f0 --- /dev/null +++ b/doc/s6-hiercopy.html @@ -0,0 +1,66 @@ +<html> + <head> + <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> + <meta http-equiv="Content-Language" content="en" /> + <title>s6-portable-utils: the s6-hiercopy program</title> + <meta name="Description" content="s6-portable-utils: the s6-hiercopy program" /> + <meta name="Keywords" content="s6 linux administration root utilities hiercopy cp -a" /> + <!-- <link rel="stylesheet" type="text/css" href="http://skarnet.org/default.css" /> --> + </head> +<body> + +<p> +<a href="index.html">s6-portable-utils</a><br /> +<a href="http://skarnet.org/software/">Software</a><br /> +<a href="http://skarnet.org/">skarnet.org</a> +</p> + +<h1> The <tt>s6-hiercopy</tt> program </h1> + +<p> +<tt>s6-hiercopy</tt> copies a directory structure recursively. +</p> + +<h2> Interface </h2> + +<pre> + s6-hiercopy <em>source</em> <em>destination</em> +</pre> + +<ul> + <li> <tt>s6-hiercopy</tt> recursively copies <em>source</em> to +<em>destination</em>, which is created if it doesn't exist. +The permissions are preserved. The owner and group are preserved +if the user is the superuser. </li> + <li> It exits 0 on success and 111 on temporary failure. </li> +</ul> + +<h2> Notes </h2> + +<ul> + <li> Copying files and browsing through directories is one of Unix's +weakest points, and <tt>s6-hiercopy</tt> is not meant to work around +the problem; it's only a quick hack that I needed to boot my embedded +platform. I originally planned to write the ultimate <tt>cp</tt> utility, +portable and reliable and featureful and everything - while needing +approximately a hundred times less resources than GNU <tt>cp</tt> does, +of course. But I eventually dropped the idea: it's impossible to +design, much less write, such a utility. Notably, + you cannot make it reliable because Unix's set of filesystem +management primitives is just too weak. It lacks a lot of atomic +operations, and filesystem transactions. As a result, <tt>s6-hiercopy</tt> +is a walking race condition and should <strong>absolutely not</strong> +be considered instant when used in a multitasking environment. +But then, <tt>cp</tt> shouldn't either. </li> + <li> There is no standard way of creating device nodes on a +filesystem, so any <tt>cp</tt>-like utility is inherently +non-portable. Fortunately, most systems still agree on the non-portable usages of +<a href="http://pubs.opengroup.org/onlinepubs/9699919799/functions/mknod.html">mknod +specification</a>, so things should work in practice. Consequently, +the s6-hiercopy utility has been moved from +<a href="http://skarnet.org/software/s6-linux-utils/">s6-linux-utils</a> +to s6-portable-utils. </li> +</ul> + +</body> +</html> diff --git a/doc/upgrade.html b/doc/upgrade.html index 70d8b07..26bb1a8 100644 --- a/doc/upgrade.html +++ b/doc/upgrade.html @@ -17,6 +17,14 @@ <h1> What has changed in s6-portable-utils </h1> +<h2> in 2.0.2.0 </h2> + +<ul> + <li> skalibs dependency bumped to 2.3.1.0. </li> + <li> s6-hiercopy now belongs to this package. (It formely belonged +to s6-linux-utils, but it is actually portable in practice.) </li> +</ul> + <h2> in 2.0.1.0 </h2> <ul> |