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comparison rvinterf/include/ffslimits.h @ 295:3dd74b16df82

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fc-fsio: pathname recursion handling revamped
author Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
date Sat, 01 Mar 2014 08:01:08 +0000
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294:797468042b32 295:3dd74b16df82
1 /*
2 * Limits on FFS filenames and pathnames
3 *
4 * The deepest pathname allowed is one of the form /1/2/3/4/5/6, where the
5 * last component may be a file, a directory or a symlink; if this last
6 * component is a directory, it has to be empty, because any child of
7 * that directory would violate the depth limit.
8 *
9 * The proper FFS pathname form begins with a slash (all pathnames must
10 * be absolute, no Unix processes in the fw means no current directories),
11 * has exactly one slash in each separating place (no double slashes),
12 * and no trailing slash except in the special case of the root directory,
13 * whose full pathname is "/".
14 *
15 * Each component name is [1,20] characters long; combining this limit
16 * with the maximum depth of 6 puts the maximum length of a properly-formed
17 * full pathname at 126 characters.
18 */
19
20 #define MAX_FN_COMPONENT 20
21 #define MAX_NAME_DEPTH 6
22 #define MAX_FULL_PATHNAME ((MAX_FN_COMPONENT+1) * MAX_NAME_DEPTH)