matchpathcon(3)                     SELinux API documentation                     matchpathcon(3)



NAME
       matchpathcon, matchpathcon_index - get the default SELinux security context for the speci‐
       fied path from the file contexts configuration

SYNOPSIS
       #include <selinux/selinux.h>

       int matchpathcon_init(const char *path);

       int matchpathcon_init_prefix(const char *path, const char *subset);

       int matchpathcon_fini(void);

       int matchpathcon(const char *path, mode_t mode, char **con);

       int matchpathcon_index(const char *name, mode_t mode, char **con);

DESCRIPTION
       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 con‐
       texts configuration is loaded by default, i.e.  the  path  returned  by  selinux_file_con‐
       text_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 suf‐
       fix  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 that have stems prefixed by prefix.

       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 matchpath‐
       con_init() calls, or to free memory when finished using matchpathcon().

       matchpathcon()  matches the specified pathname and mode against the file contexts configu‐
       ration 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 configura‐
       tion.

       matchpathcon_index() is the same as matchpathcon() but returns a specification index  that
       can later be used in a matchpathcon_filespec_add(3) call.

RETURN VALUE
       Returns zero on success or -1 otherwise.

SEE ALSO
       selinux(8), set_matchpathcon_flags(3), set_matchpathcon_invalidcon(3),
       set_matchpathcon_printf(3), matchpathcon_filespec_add(3), matchpathcon_checkmatches(3),
       freecon(3), setfilecon(3), setfscreatecon(3)



sds AT tycho.gov                        21 November 2009                         matchpathcon(3)