NAMEaf_histories, af_access - AtFS history functions
SYNOPSIS#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)
DESCRIPTIONaf_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.
SEE ALSOed(1), re_comp(3), re_exec(3), free(3)
DIAGNOSTICSUpon error, -1 or a null pointer (depending on the return type) is returned and af_errno is set to the corresponding error number. AF_ACCESS(3)