Are there any filename or path length limits on Linux?

The filename and pathname lengths are limited; constants defined in linux/limits.h

#define NAME_MAX 255 /* # chars in a file name */
#define PATH_MAX 4096 /* # chars in a path name including nul */


nbfs1:~ # getconf NAME_MAX /
255
nbfs1:~ # getconf PATH_MAX /
4096
nbfs1:~ #