...ny header files) in order to obtain the definition of FTW_ACTIONRETVAL from <ftw.h> . FTW_CHDIR If set, do a chdir (2) to each directory before handling its contents. This is us…...ny header files) in order to obtain the definition of FTW_ACTIONRETVAL from <ftw.h> . FTW_CHDIR If set, do a chdir (2) to each directory before handling its contents. This is us…...to be followed immediately, as if via FTS_LOGICAL , regardless of the primary mode. FTS_NOCHDIR As a performance optimization, the fts functions change directories as they walk …...to be followed immediately, as if via FTS_LOGICAL , regardless of the primary mode. FTS_NOCHDIR As a performance optimization, the fts functions change directories as they walk …...to be followed immediately, as if via FTS_LOGICAL , regardless of the primary mode. FTS_NOCHDIR As a performance optimization, the fts functions change directories as they walk …...to be followed immediately, as if via FTS_LOGICAL , regardless of the primary mode. FTS_NOCHDIR As a performance optimization, the fts functions change directories as they walk …...to be followed immediately, as if via FTS_LOGICAL , regardless of the primary mode. FTS_NOCHDIR As a performance optimization, the fts functions change directories as they walk …...to be followed immediately, as if via FTS_LOGICAL , regardless of the primary mode. FTS_NOCHDIR As a performance optimization, the fts functions change directories as they walk …...or the purpose of returning to it later. Opening the current directory (".") and calling fchdir (2) to return is usually a faster and more reliable alternative when sufficiently…...or the purpose of returning to it later. Opening the current directory (".") and calling fchdir (2) to return is usually a faster and more reliable alternative when sufficiently…...or the purpose of returning to it later. Opening the current directory (".") and calling fchdir (2) to return is usually a faster and more reliable alternative when sufficiently…