+
−/*
+
− * Limits on FFS filenames and pathnames
+
− *
+
− * The deepest pathname allowed is one of the form /1/2/3/4/5/6, where the
+
− * last component may be a file, a directory or a symlink; if this last
+
− * component is a directory, it has to be empty, because any child of
+
− * that directory would violate the depth limit.
+
− *
+
− * The proper FFS pathname form begins with a slash (all pathnames must
+
− * be absolute, no Unix processes in the fw means no current directories),
+
− * has exactly one slash in each separating place (no double slashes),
+
− * and no trailing slash except in the special case of the root directory,
+
− * whose full pathname is "/".
+
− *
+
− * Each component name is [1,20] characters long; combining this limit
+
− * with the maximum depth of 6 puts the maximum length of a properly-formed
+
− * full pathname at 126 characters.
+
− */
+
−
+
−#define	MAX_FN_COMPONENT	20
+
−#define	MAX_NAME_DEPTH		6
+
−#define	MAX_FULL_PATHNAME	((MAX_FN_COMPONENT+1) * MAX_NAME_DEPTH)