ibm-information-center/dist/eclipse/plugins/i5OS.ic.rzam4_5.4.0.1/rzam4isovoldir.htm

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<meta name="abstract" content="The volume identifier for the primary volume descriptor can be a maximum of 32 characters. The volume identifier must contain only alphabetic characters (A through Z), numeric characters (0 through 9), or the underscore (_)." />
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<title>Volume, directory, and file names</title>
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<h1 class="topictitle1">Volume, directory, and file names</h1>
<div><p>The volume identifier for the primary volume descriptor can be
a maximum of 32 characters. The volume identifier must contain only alphabetic
characters (A through Z), numeric characters (0 through 9), or the underscore
(_).</p>
<p>Although not required, you can include one or more directories in the path
name. Each element of the path can be a maximum of 32 characters with the
total maximum path length of 256 characters. A path name can consist of any
alphabetic characters (A through Z), numeric characters (0 through 9), or
the underscore (_).</p>
<p>For ISO 9660 media containing Rock Ridge extensions, the length of each
element name is not restricted, but the total maximum path length is still
256 characters. The path name characters are not restricted, but are recommended
to consist of the POSIX portable file name character set (A through Z, a through
z, 0 through 9, period (.), underscore (_), or hyphen (-)).</p>
<p>File name searches are not case sensitive, meaning that you can use either
uppercase or lowercase characters to access existing files.</p>
<p>For ISO 9660 media containing Rock Ridge extensions, file searches are
case-sensitive. If no case-sensitive match is found, a mixed case match is
returned if it exists. If multiple mixed case matches exist on the volume,
an error will be returned indicating that ambiguous names exist on the media.
Some optical commands, such as Copy Optical (CPYOPT), are not supported when
duplicate, ambiguous file names exist. For example Rock Ridge allows files
ABC.ext and abc.EXT to exist in the same directory. This is not supported
by CPYOPT and may produce unpredictable results.</p>
<div class="section"><h4 class="sectiontitle">Directory and file security</h4><p>There is no direcotry-
and file-level security for ISO 9660 media. Volume-level security
is available through authorization lists.</p>
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzam4iso9660.htm" title="This industry standard media format was originally designed to specify the volume and file structures of compact-disk read-only memory (CD-ROM) optical disks, and is a read-only media format.">ISO 9660</a></div>
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