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<title>Coding Style: p11-kit</title>
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<div class="titlepage"><div><div><h2 class="title" style="clear: both">
<a name="devel-building-style"></a>Coding Style</h2></div></div></div>
<p>We use a code style similar to the linux kernel. Use tabs
to indent and spaces to align/wrap beyond the indentation level.</p>
<p>We don't try to guarantee completely robust and problem free
behavior in cases where the caller or system isn't behaving. We
consider these to be outside of our control:</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem"><p>Broken input from callers. We use preconditions
to check input and immediately return. We don't try to provide
error codes for all the various ways callers can screw
around.</p></li>
<li class="listitem">
<p>Out of memory. It is pretty much impossible to handle out
of memory errors correctly. Handling them alongside other errors
is naive and broken. We don't try to guarantee library state
(such as locks or memory leaks) when memory allocation fails.</p>
<p>We do check the results from all memory allocations, but
treat them as unexpected conditions. As a nod to the behavior
of callers of this library, we don't abort on memory allocation
failures. We use preconditions with somewhat sane results.</p>
<p>Exception: when reading files or allocating potentially
unbounded amounts of memory, we should respond robustly to memory
allocation failures.</p>
</li>
</ul></div>
<p>These unexpected conditions indicate a bug either in p11-kit or
in the system. All bets are off once this occurs.</p>
<p>Use the <code class="literal">return_val_xxx()</code> precondition macros to
check for unexpected conditions.</p>
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