af_histories, af_access - AtFS history functions

af_histories returns a list of source history names from the directory pointed to by path, that match the
       given  pattern.  Histories  in  a  directory are represented by at least one version. The pattern must be
       ed(1) patterns, processable by re_comp(3) and re_exec(3). The resulting list of af_histories  resides  in
       allocated  memory.  Use  free(3) to free the memory for further allocation. af_histories returns an empty
       list (not a NULL pointer !), when no histories are found.

       af_cachenames does the same as af_histories but on derived object caches.

       af_access determines the existence of an object history.  If any ASO (any version) with the  given  path,
       name and type attributes exists, af_access returns zero, otherwise -1.  The mode argument can either be

       AF_CLASS_SOURCE
                 indicating that only source objects shall be searched or

       AF_CLASS_DERIVED
                 which  means  that  only the derived object cache shall be searched for existence of a matching
                 ASO.

       Upon error, -1 or a null pointer (depending on the return type) is returned and af_errno is  set  to  the
       corresponding error number.

AtFS-1.71                                   Fri Jun 25 14:33:09 1993                               af_history(3)

       af_histories, af_access - AtFS history functions

ed(1), re_comp(3), re_exec(3), free(3)

       #include <atfs.h>

       char**af_histories (char *path, char *pattern)

       char**af_cachenames (char *path, char *pattern);

       int   af_access (char *path, char *name, char *type, int mode)