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<title>Perform Miscellaneous File System Functions (qp0fptos) API</title>
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<h2>Perform Miscellaneous File System Functions (QP0FPTOS) API</h2>
<div class="box" style="width: 80%;">
<br>
&nbsp;&nbsp;Required Parameter Group:<br>
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<br>
<table width="100%">
<tr>
<td align="center" valign="top" width="10%">1</td>
<td align="left" valign="top" width="50%">Function type</td>
<td align="left" valign="top" width="20%">Input</td>
<td align="left" valign="top" width="20%">Char(*)</td>
</tr>
<tr>
<td align="center" valign="top">2</td>
<td align="left" valign="top">Function extension 1</td>
<td align="left" valign="top">Input</td>
<td align="left" valign="top">Char(*)</td>
</tr>
<tr>
<td align="center" valign="top">3</td>
<td align="left" valign="top">Function extension 2</td>
<td align="left" valign="top">Input</td>
<td align="left" valign="top">Char(*)</td>
</tr>
</table>
<br>
&nbsp;&nbsp;Default Public Authority: *USE<br>
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<br>
&nbsp;&nbsp;Threadsafe: No<br>
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<p>The Perform Miscellaneous File System Function (QP0FPTOS) API is used to
perform a variety of file system functions. The first parameter defines the
type of function that is requested. Other parameters are optional, depending on
the selected function. The output from this API varies, based on the selected
function. See the function descriptions for more details.</p>
<br>
<h3>Authorities and Locks</h3>
<p>To call this program you must have *SERVICE special authority, or be
authorized to the Service Dump function of i5/OS through iSeries
Navigator's Application Administration support. The
Change Function Usage (CHGFCNUSG) command or
<a href="qsychfui.htm">
Change Function Usage Information (QSYCHFUI) API</a>, with a function ID of
QIBM_SERVICE_DUMP, also can be used to change the list of users allowed to
perform dump operations.</p>
<p><strong>Note:</strong> Adopted authority is not used.</p>
<br>
<h3>Required Parameter Group</h3>
<p>Required parameters vary according to the selected function. The selected
function is identified by the first parameter on the call to the API.</p>
<dl>
<dt><strong>Function Type</strong></dt>
<dd>INPUT; CHAR(*)
<p>The desired file system function to perform. Valid values follow:</p>
<dl>
<dt><em>(1) *DUMP</em></dt>
<dd>Creates a general file system dump in a spooled file with file name
"QSYSPRT" and with "QP0FDUMP" in the User Data field. No other parameters are
required or supported when *DUMP is specified.<br>
<br>
</dd>
<dt><em>(2) *DUMPALL</em></dt>
<dd>Creates a variety of file system dumps in a single spooled file with file
name "QSYSPRT" and with "QP0FDUMP" in the User Data field. The following table
describes the optional parameter when *DUMPALL is specified.<br>
<br>
<table border width="100%">
<tr>
<th align="left" valign="bottom" width="12%">Function</th>
<th align="left" valign="bottom" width="15%">Function extension 1</th>
<th align="left" valign="bottom" width="15%">Function extension 2</th>
<th align="left" valign="bottom" width="58%">Description</th>
</tr>
<tr>
<td align="left" valign="top">*DUMPALL</td>
<td align="left" valign="top">Job number (CHAR 6)</td>
<td align="left" valign="top">(Not supported)</td>
<td align="left" valign="top">Specifies the job that is dumped. If a job is not
specified, the data is dumped for all jobs. If there are multiple jobs with the
same number, the first one encountered will be dumped.</td>
</tr>
</table>
<br>
</dd>
<dt><em>(3) *DUMPLFS</em></dt>
<dd>Creates a dump of logical file system data in a spooled file with file name
"QSYSPRT" and with "QP0FDUMP" in the User Data field. The following table
describes the optional parameter when *DUMPLFS is specified.<br>
<br>
<table border width="100%">
<tr>
<th align="left" valign="bottom" width="12%">Function</th>
<th align="left" valign="bottom" width="15%">Function extension 1</th>
<th align="left" valign="bottom" width="15%">Function extension 2</th>
<th align="left" valign="bottom" width="58%">Description</th>
</tr>
<tr>
<td align="left" valign="top">*DUMPLFS</td>
<td align="left" valign="top">Job number (CHAR 6)</td>
<td align="left" valign="top">(Not supported)</td>
<td align="left" valign="top">Specifies the job that is dumped. If a job is not
specified, the data is dumped for all jobs. If there are multiple jobs with the
same number, the first one encountered will be dumped.</td>
</tr>
</table>
<br>
</dd>
<dt><em>(4) *NFSFORCE</em></dt>
<dd>Sets various values and modes for the network file system. The following
table describes the required parameters when *NFSFORCE is specified.<br>
<br>
<table border width="100%">
<tr>
<th align="left" valign="bottom" width="12%">Function</th>
<th align="left" valign="bottom" width="15%">Function extension 1</th>
<th align="left" valign="bottom" width="15%">Function extension 2</th>
<th align="left" valign="bottom" width="58%">Description</th>
</tr>
<tr>
<td align="left" valign="top">*NFSFORCE</td>
<td align="left" valign="top">V2</td>
<td align="left" valign="top">ON or OFF</td>
<td align="left" valign="top">If ON, indicates version 2 mounts only by the
client. If QNFSMNTD is started afterwards, then server will permit version 2
mounts only.</td>
</tr>
</table>
<br>
</dd>
<dt><em>(5) *REBUILDDEVNULL</em></dt>
<dd>Attempts to create the /dev/null and dev/zero character special files. If
an existing dev/null or dev/zero object exists that is not a character special
file, then the object is renamed to /dev/null.prv or dev/zero.prv. If
/dev/null.prv or /dev/zero.prv exists, then it it renamed to /dev/null.prv.001
or /dev/zero.prv.001, /dev/null.prv.002 or /dev/zero.prv.002, and so on, until
a name is found for the object. If 999 is exceeded and the rename cannot be
done, the object is not renamed and an informational message is issued and the
QP0FPTOS program completes successfully. No other parameters are required or
supported when *REBUILDDEVNULL is specified.<br>
<br>
</dd>
<dt><em>(6) *TRACE6ON or *TRACE6OFF</em></dt>
<dd>*TRACE6ON starts the logging of trace messages in the user job log for some
network file system functions. *TRACE6OFF stops the logging of these
messages.<br>
<br>
</dd>
<dt><em>(7) *TRACE8ON or *TRACE8OFF</em></dt>
<dd>*TRACE8ON starts the logging of trace messages to the QSYSOPR message queue
for some network file system functions. *TRACE8OFF stops the logging of these
messages.<br>
<br>
</dd>
<dt><em>(8) *TRACE9ON or *TRACE9OFF</em></dt>
<dd>*TRACE9ON starts the collection of some network file system statistics and
resets the statistics. *TRACE9OFF stops the collection of these statistics.<br>
<br>
</dd>
<dt><em>(9) *DUMPNFSSTATS</em></dt>
<dd>Creates a file system dump of network file system (NFS) statistics (both
client and server) in a spooled file with file name "QSYSPRT" and with
"QP0FDUMP" in the User Data field. The information dumped comes from a window
of time specified with the *TRACE9ON/OFF function. No other parameters are
required or supported when *DUMPNFSSTATS is specified.<br>
<br>
</dd>
</dl>
</dd>
<dt><strong>Function extension 1</strong></dt>
<dd>INPUT; CHAR(*)
<p>Function extension 1 is optional or required, based on the first parameter.
Whenever it is valid, function extension 1 is described above along with a
first parameter description. Function extension 1 is valid when the first
parameter is listed below:</p>
<dl>
<dt><em>(1) *DUMPALL</em></dt>
<dt><em>(2) *DUMPLFS</em></dt>
<dt><em>(3) *NFSFORCE</em></dt>
</dl>
<br>
</dd>
<dt><strong>Function extension 2</strong></dt>
<dd>INPUT; CHAR(*)
<p>Function extension 2 is optional or required, based on the first parameter.
Whenever it is valid, function extension 2 is described above along with a
first parameter description. Function extension 2 is valid when the first
parameter is listed below:</p>
<dl>
<dt><em>(1) *NFSFORCE</em></dt>
</dl>
</dd>
</dl>
<br>
<h3><a name="USAGE_NOTES">Usage Notes</a></h3>
<p>If this API is called without the first parameter that is required, then
message CPFBC53 is issued to the caller. This message specifies a parameter
that is not valid. To recover, the caller is pointed to the API
documentation.</p>
<br>
<h3>Error Messages</h3>
<table width="100%" cellpadding="5">
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<tr>
<th align="left" valign="top" nowrap>Message ID</th>
<th align="left" valign="top">Error Message Text</th>
</tr>
<tr>
<td align="left" valign="top">CPE3418 E</td>
<td align="left" valign="top">Possible APAR condition or hardware failure.</td>
</tr>
<tr>
<td align="left" valign="top">CPF9872 E</td>
<td align="left" valign="top">Program or service program &amp;1 in library
&amp;2 ended. Reason code &amp;3.</td>
</tr>
<tr>
<td align="left" valign="top">CPFA0A0 E</td>
<td align="left" valign="top">Object name already exists.</td>
</tr>
<tr>
<td align="left" valign="top">CPFA0D4 E</td>
<td align="left" valign="top">File system error occurred. Error number
&amp;1.</td>
</tr>
<tr>
<td align="left" valign="top">CPDA0FF E</td>
<td align="left" valign="top">Program not called. You need *SERVICE authority
to call this program.</td>
</tr>
<tr>
<td align="left" valign="top">CPFBC53 E</td>
<td align="left" valign="top">Invalid parameter.</td>
</tr>
<tr>
<td align="left" valign="top">CPFBC54 E</td>
<td align="left" valign="top">Not authorized to call program.</td>
</tr>
</table>
<br>
<br>
<h3>Examples</h3>
<p>See <a href="../apiref/aboutapis.htm#codedisclaimer">Code disclaimer information</a>
for information pertaining to code examples.</p>
<table cellpadding="5" width="60%">
<tr>
<td align="left" valign="top">CALL QP0FPTOS *DUMP</td>
</tr>
<tr>
<td align="left" valign="top">CALL QP0FPTOS (*DUMPALL '055229')</td>
</tr>
<tr>
<td align="left" valign="top">CALL QP0FPTOS (*DUMPLFS '055229')</td>
</tr>
<tr>
<td align="left" valign="top">CALL QP0FPTOS (*NFSFORCE V2 ON)</td>
</tr>
<tr>
<td align="left" valign="top">CALL QP0FPTOS *REBUILDDEVNULL</td>
</tr>
<tr>
<td align="left" valign="top">CALL QP0FPTOS *TRACE6ON</td>
</tr>
<tr>
<td align="left" valign="top">CALL QP0FPTOS *TRACE6OFF</td>
</tr>
<tr>
<td align="left" valign="top">CALL QP0FPTOS *TRACE8ON</td>
</tr>
<tr>
<td align="left" valign="top">CALL QP0FPTOS *TRACE8OFF</td>
</tr>
<tr>
<td align="left" valign="top">CALL QP0FPTOS *TRACE9ON</td>
</tr>
<tr>
<td align="left" valign="top">CALL QP0FPTOS *TRACE9OFF</td>
</tr>
<tr>
<td align="left" valign="top">CALL QP0FPTOS *DUMPNFSSTATS</td>
</tr>
</table>
<br>
<hr>
API introduced: V5R2
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