S_ISLNK           156 os/unix/ngx_files.h #define ngx_is_link(sb)          (S_ISLNK((sb)->st_mode))
S_ISLNK           243 os/unix/ngx_files.h     (((dir)->type) ? ((dir)->type == DT_LNK) : (S_ISLNK((dir)->info.st_mode)))
S_ISLNK           249 os/unix/ngx_files.h #define ngx_de_is_link(dir)      (S_ISLNK((dir)->info.st_mode))