This family of functions is deprecated. For new code, please use
selabel_open(3) with the SELABEL_CTX_FILE backend in place of
matchpathcon_init(), use selabel_close(3) in place of
matchpathcon_fini(), and use selabel_lookup(3) in place of
The remaining description below is for the legacy interface.
matchpathcon_init() loads the file contexts configuration specified
by path into memory for use by subsequent matchpathcon() calls. If
path is NULL, then the active file contexts configuration is loaded
by default, i.e. the path returned by selinux_file_context_path(3).
Unless the MATCHPATHCON_BASEONLY flag has been set via
set_matchpathcon_flags(3), files with the same path prefix but a
.homedirs and .local suffix are also looked up and loaded if present.
These files provide dynamically generated entries for user home
directories and for local customizations.
matchpathcon_init_prefix() is the same as matchpathcon_init() but
only loads entries with regular expressions whose first pathname
component is a prefix of prefix , e.g. pass "/dev" if you only intend
to call matchpathcon() with pathnames beginning with /dev. However,
this optimization is no longer necessary due to the use of
file_contexts.bin files with precompiled regular expressions, so use
of this interface is deprecated.
matchpathcon_fini() frees the memory allocated by a prior call to
matchpathcon_init.() This function can be used to free and reset the
internal state between multiple matchpathcon_init() calls, or to free
memory when finished using matchpathcon().
matchpathcon() matches the specified pathname, after transformation
via realpath(3) excepting any final symbolic link component if
S_IFLNK was specified as the mode, and mode against the file contexts
configuration and sets the security context con to refer to the
resulting context. The caller must free the returned security context
con using freecon(3) when finished using it. mode can be 0 to
disable mode matching, but should be provided whenever possible, as
it may affect the matching. Only the file format bits (i.e. the file
type) of the mode are used. If matchpathcon_init() has not already
been called, then this function will call it upon its first
invocation with a NULL path, defaulting to the active file contexts
matchpathcon_index() is the same as matchpathcon() but returns a
specification index that can later be used in a
This page is part of the selinux (Security-Enhanced Linux user-space
libraries and tools) project. Information about the project can be
found at ⟨https://github.com/SELinuxProject/selinux/wiki⟩. If you
have a bug report for this manual page, see
page was obtained from the project's upstream Git repository
⟨https://github.com/SELinuxProject/selinux⟩ on 2017-03-13. If you
discover any rendering problems in this HTML version of the page, or
you believe there is a better or more up-to-date source for the page,
or you have corrections or improvements to the information in this
COLOPHON (which is not part of the original manual page), send a mail
email@example.com 21 November 2009 matchpathcon(3)