**allow_utime=**__value__::
This option controls the permission check of mtime/atime.
-+
-* *20*
+
+*20*;;
If current process is in group of file's group ID, you can change timestamp.
-* *2*
+
+*2*;;
Other users can change timestamp.
The default is set from 'dmask' option. (If the directory is writable, *utime*(2) is also allowed. I.e. ~dmask & 022)
**check=**__value__::
Three different levels of pickiness can be chosen:
-+
-* *r*[*elaxed*]
+
+*r*[*elaxed*];;
Upper and lower case are accepted and equivalent, long name parts are truncated (e.g. _verylongname.foobar_ becomes _verylong.foo_), leading and embedded spaces are accepted in each name part (name and extension).
-* *n*[*ormal*]
+
+*n*[*ormal*];;
Like "relaxed", but many special characters (*, ?, <, spaces, etc.) are rejected. This is the default.
-* *s*[*trict*]
+
+*s*[*trict*];;
Like "normal", but names that contain long parts or special characters that are sometimes used on Linux but are not accepted by MS-DOS (+, =, etc.) are rejected.
**codepage=**__value__::