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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968" /><title>Chapter 5. Kernel IPC facilities</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><link rel="home" href="index.html" title="The Linux Kernel API" /><link rel="up" href="index.html" title="The Linux Kernel API" /><link rel="prev" href="re233.html" title="vmtruncate" /><link rel="next" href="re234.html" title="ipc_init" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 5. Kernel IPC facilities</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="re233.html">Prev</a> </td><th width="60%" align="center"> </th><td width="20%" align="right"> <a accesskey="n" href="re234.html">Next</a></td></tr></table><hr /></div><div class="chapter" title="Chapter 5. Kernel IPC facilities"><div class="titlepage"><div><div><h2 class="title"><a id="ipc"></a>Chapter 5. Kernel IPC facilities</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="sect1"><a href="ch05.html#id2654382">IPC utilities</a></span></dt></dl></div><div class="sect1" title="IPC utilities"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="id2654382"></a>IPC utilities</h2></div></div></div><div class="toc"><dl><dt><span class="refentrytitle"><a href="re234.html"><span>ipc_init</span></a></span><span class="refpurpose"> —
initialise IPC subsystem
</span></dt><dt><span class="refentrytitle"><a href="re235.html"><span>ipc_init_ids</span></a></span><span class="refpurpose"> —
initialise IPC identifiers
</span></dt><dt><span class="refentrytitle"><a href="re236.html"><span>ipc_init_proc_interface</span></a></span><span class="refpurpose"> —
Create a proc interface for sysipc types using a seq_file interface.
</span></dt><dt><span class="refentrytitle"><a href="re237.html"><span>ipc_findkey</span></a></span><span class="refpurpose"> —
find a key in an ipc identifier set
</span></dt><dt><span class="refentrytitle"><a href="re238.html"><span>ipc_get_maxid</span></a></span><span class="refpurpose"> —
get the last assigned id
</span></dt><dt><span class="refentrytitle"><a href="re239.html"><span>ipc_addid</span></a></span><span class="refpurpose"> —
add an IPC identifier
</span></dt><dt><span class="refentrytitle"><a href="re240.html"><span>ipcget_new</span></a></span><span class="refpurpose"> —
create a new ipc object
</span></dt><dt><span class="refentrytitle"><a href="re241.html"><span>ipc_check_perms</span></a></span><span class="refpurpose"> —
check security and permissions for an IPC
</span></dt><dt><span class="refentrytitle"><a href="re242.html"><span>ipcget_public</span></a></span><span class="refpurpose"> —
get an ipc object or create a new one
</span></dt><dt><span class="refentrytitle"><a href="re243.html"><span>ipc_rmid</span></a></span><span class="refpurpose"> —
remove an IPC identifier
</span></dt><dt><span class="refentrytitle"><a href="re244.html"><span>ipc_alloc</span></a></span><span class="refpurpose"> —
allocate ipc space
</span></dt><dt><span class="refentrytitle"><a href="re245.html"><span>ipc_free</span></a></span><span class="refpurpose"> —
free ipc space
</span></dt><dt><span class="refentrytitle"><a href="re246.html"><span>ipc_rcu_alloc</span></a></span><span class="refpurpose"> —
allocate ipc and rcu space
</span></dt><dt><span class="refentrytitle"><a href="re247.html"><span>ipc_schedule_free</span></a></span><span class="refpurpose"> —
free ipc + rcu space
</span></dt><dt><span class="refentrytitle"><a href="re248.html"><span>ipc_immediate_free</span></a></span><span class="refpurpose"> —
free ipc + rcu space
</span></dt><dt><span class="refentrytitle"><a href="re249.html"><span>ipcperms</span></a></span><span class="refpurpose"> —
check IPC permissions
</span></dt><dt><span class="refentrytitle"><a href="re250.html"><span>kernel_to_ipc64_perm</span></a></span><span class="refpurpose"> —
convert kernel ipc permissions to user
</span></dt><dt><span class="refentrytitle"><a href="re251.html"><span>ipc64_perm_to_ipc_perm</span></a></span><span class="refpurpose"> —
convert new ipc permissions to old
</span></dt><dt><span class="refentrytitle"><a href="re252.html"><span>ipc_lock</span></a></span><span class="refpurpose"> —
Lock an ipc structure without rw_mutex held
</span></dt><dt><span class="refentrytitle"><a href="re253.html"><span>ipcget</span></a></span><span class="refpurpose"> —
Common sys_*<code class="function">get</code> code
</span></dt><dt><span class="refentrytitle"><a href="re254.html"><span>ipc_update_perm</span></a></span><span class="refpurpose"> —
update the permissions of an IPC.
</span></dt><dt><span class="refentrytitle"><a href="re255.html"><span>ipcctl_pre_down</span></a></span><span class="refpurpose"> —
retrieve an ipc and check permissions for some IPC_XXX cmd
</span></dt><dt><span class="refentrytitle"><a href="re256.html"><span>ipc_parse_version</span></a></span><span class="refpurpose"> —
IPC call version
</span></dt></dl></div></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="re233.html">Prev</a> </td><td width="20%" align="center"> </td><td width="40%" align="right"> <a accesskey="n" href="re234.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span>vmtruncate</span> </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> <span>ipc_init</span></td></tr></table></div></body></html>
