man-pages/man3/context_new.3.html
2021-03-31 01:06:50 +01:00

148 lines
3.4 KiB
HTML

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<HTML><HEAD><TITLE>Man page of context_new</TITLE>
</HEAD><BODY>
<H1>context_new</H1>
Section: SELinux API documentation (3)<BR>Updated: 20 December 2011<BR><A HREF="#index">Index</A>
<A HREF="/cgi-bin/man/man2html">Return to Main Contents</A><HR>
<A NAME="lbAB">&nbsp;</A>
<H2>NAME</H2>
context_new, context_str, context_free, context_type_get, context_type_set, context_range_get, context_range_set,context_role_get, context_role_set, context_user_get, context_user_set - Routines to manipulate SELinux security contexts
<A NAME="lbAC">&nbsp;</A>
<H2>SYNOPSIS</H2>
<B>#include &lt;<A HREF="file:///usr/include/selinux/context.h">selinux/context.h</A>&gt;</B>
<P>
<B>context_t context_new(const char *</B><I>context_str</I><B>);</B>
<P>
<B>const char * context_str(context_t </B><I>con</I><B>);</B>
<P>
<B>void context_free(context_t </B><I>con</I><B>);</B>
<P>
<B>const char * context_type_get(context_t </B><I>con</I><B>);</B>
<P>
<B>const char * context_range_get(context_t </B><I>con</I><B>);</B>
<P>
<B>const char * context_role_get(context_t </B><I>con</I><B>);</B>
<P>
<B>const char * context_user_get(context_t </B><I>con</I><B>);</B>
<P>
<B>int context_type_set(context_t </B><I>con</I><B>, const char *</B><I>type</I><B>);</B>
<P>
<B>int context_range_set(context_t </B><I>con</I><B>, const char *</B><I>range</I><B>);</B>
<P>
<B>int context_role_set(context_t </B><I>con</I><B>, const char *</B><I>role</I><B>);</B>
<P>
<B>int context_user_set(context_t </B><I>con</I><B>, const char *</B><I>user</I><B>);</B>
<A NAME="lbAD">&nbsp;</A>
<H2>DESCRIPTION</H2>
These functions allow an application to manipulate the fields of a
security context string without requiring it to know the format of the
string.
<P>
<B>context_new</B>()
returns a new context initialized to a context string.
<P>
<B>context_str</B>()
returns a pointer to the string value of the
<B>context_t</B>,
valid until the next call to
<B>context_str</B>()
or
<B>context_free</B>()
for the same
<B>context_t*</B>.
<P>
<B>context_free</B>()
frees the storage used by a context.
<P>
<B>context_type_get</B>(),
<B>context_range_get</B>(),
<B>context_role_get</B>(),
<B>context_user_get</B>()
get a pointer to the string value of a context component.
<P>
<B>Note:</B>
Values returned by the get functions are only valid until the next call
to a set function or
<B>context_free</B>()
for the same
<B>context_t</B>
structure.
<P>
<B>context_type_set</B>(),
<B>context_range_set</B>(),
<B>context_role_set</B>(),
<B>context_user_set</B>()
set a context component.
<A NAME="lbAE">&nbsp;</A>
<H2>RETURN VALUE</H2>
On failure
<B>context_*_set</B>()
functions return non-zero and 0 on success.
<P>
The other functions return NULL on failure and non-NULL on success.
<P>
On failure
<I>errno</I>
is set appropriately.
<A NAME="lbAF">&nbsp;</A>
<H2>SEE ALSO</H2>
<B><A HREF="/cgi-bin/man/man2html?8+selinux">selinux</A></B>(8)
<P>
<HR>
<A NAME="index">&nbsp;</A><H2>Index</H2>
<DL>
<DT id="1"><A HREF="#lbAB">NAME</A><DD>
<DT id="2"><A HREF="#lbAC">SYNOPSIS</A><DD>
<DT id="3"><A HREF="#lbAD">DESCRIPTION</A><DD>
<DT id="4"><A HREF="#lbAE">RETURN VALUE</A><DD>
<DT id="5"><A HREF="#lbAF">SEE ALSO</A><DD>
</DL>
<HR>
This document was created by
<A HREF="/cgi-bin/man/man2html">man2html</A>,
using the manual pages.<BR>
Time: 00:05:38 GMT, March 31, 2021
</BODY>
</HTML>