friedkiwi/ibm-information-center
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
14ed2849c6
ibm-information-center/dist/eclipse/plugins/i5OS.ic.rzau8_5.4.0.1/unixapitable.htm

388 lines
24 KiB
HTML
Raw Normal View History

Add readme and dist folders
2024-04-02 14:02:31 +00:00
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html
PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html lang="en-us" xml:lang="en-us">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="security" content="public" />
<meta name="Robots" content="index,follow" />
<meta http-equiv="PICS-Label" content='(PICS-1.1 "http://www.icra.org/ratingsv02.html" l gen true r (cz 1 lz 1 nz 1 oz 1 vz 1) "http://www.rsac.org/ratingsv01.html" l gen true r (n 0 s 0 v 0 l 0) "http://www.classify.org/safesurf/" l gen true r (SS~~000 1))' />
<meta name="DC.Type" content="reference" />
<meta name="DC.Title" content="Integrated file system APIs" />
<meta name="abstract" content="Use this table as a quick reference for UNIX-type optical file system APIs." />
<meta name="description" content="Use this table as a quick reference for UNIX-type optical file system APIs." />
<meta name="DC.Relation" scheme="URI" content="ifs.htm" />
<meta name="copyright" content="(C) Copyright IBM Corporation 2000, 2006" />
<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 2000, 2006" />
<meta name="DC.Format" content="XHTML" />
<meta name="DC.Identifier" content="unixapitable" />
<meta name="DC.Language" content="en-us" />
<!-- All rights reserved. Licensed Materials Property of IBM -->
<!-- US Government Users Restricted Rights -->
<!-- Use, duplication or disclosure restricted by -->
<!-- GSA ADP Schedule Contract with IBM Corp. -->
<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
<link rel="stylesheet" type="text/css" href="./ic.css" />
<title>Integrated file system APIs</title>
</head>
<body id="unixapitable"><a name="unixapitable"><!-- --></a>
<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
<h1 class="topictitle1">Integrated file system APIs</h1>
<div><p>Use this table as a quick reference for UNIX-type optical file
system APIs.</p>
<div class="section"><p>Like all file systems, the optical file system has unique rules
and restrictions for applications that access optical functions through the
integrated file system. Several of the UNIX-type APIs and generic commands
are not supported. Others are only partially supported, or restricted. </p>
<p>Review
the following tables to better understand supported and unsupported APIs and
commands.</p>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" width="100%" frame="border" border="1" rules="all"><caption>Table 1. Optical
implementation of UNIX-type APIs</caption><tbody><tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e26"><strong>UNIX-type API</strong></th>
<td valign="top" width="13.503649635036496%" headers="d0e26 "><strong>Supported</strong></td>
<td valign="top" width="52.919708029197075%" headers="d0e26 "><strong>Comments and usage notes</strong></td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e36">access (Determine File Accessibility)</th>
<td valign="top" width="13.503649635036496%" headers="d0e36 ">Yes</td>
<td valign="top" width="52.919708029197075%" headers="d0e36 ">Requires *X authority to the parent optical volume.
For non-Universal Disk Format (UDF) volumes, no other authority is required.
For UDF formatted volumes, the following authorization rules apply:<ul><li>Requires *X authority to each directory in the path preceding the object
tested.</li>
<li>Requires *R authority when R_OK is specified.</li>
<li>Requires *W authority when W_OK is specified.</li>
<li>Requires *X authority when X_OK is specified.</li>
<li>Requires *RX authority when R_OK|X_OK is specified.</li>
<li>Requires *WX authority when W_OK|X_OK is specified.</li>
<li>Requires *RX authority when R_OK|W_OK is specified.</li>
<li>Requires no authority when F_OK is specified.</li>
</ul>
</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e60">accessx (Determine File accessibility based on the <strong>who</strong> parameter)</th>
<td valign="top" width="13.503649635036496%" headers="d0e60 ">Yes</td>
<td valign="top" width="52.919708029197075%" headers="d0e60 ">Does not require *X authority to the parent optical
volume. For UDF volumes, the following authorization rules apply:<div class="p">Valid
values for the <strong>who</strong> parameter are:<ul><li>ACC_INVOKER</li>
<li>ACC_SELF</li>
<li>ACC_ALL</li>
<li>ACC_OTHERS</li>
</ul>
<ol><li>Requires *R authority when R_OK is specified</li>
<li>Requires *W authority when W_OK is specified</li>
<li>Requires *X authority when X_OK is specified</li>
</ol>
</div>
<p>Authority checks are mutually exclusive.</p>
</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e93">chdir (Change Current Directory)</th>
<td valign="top" width="13.503649635036496%" headers="d0e93 ">Yes</td>
<td valign="top" width="52.919708029197075%" headers="d0e93 ">Requires *X authority to the parent optical volume. <p>For
non-UDF volumes, no other authority is required. </p>
<p>For UDF formatted
volumes, *X authority is required to each directory in the path</p>
</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e104">chmod (Change File Authorizations)</th>
<td valign="top" width="13.503649635036496%" headers="d0e104 ">Yes</td>
<td valign="top" width="52.919708029197075%" headers="d0e104 ">Only supported for UDF formatted optical volumes. Requires
*CHANGE authority to the parent optical volume. Requires *X authority to each
directory in the path preceding the object. To perform this operation, you
must be the owner of the file or have *ALLOBJ special authority.</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e111">chown (Change Owner and Group of File)</th>
<td valign="top" width="13.503649635036496%" headers="d0e111 ">Yes</td>
<td valign="top" width="52.919708029197075%" headers="d0e111 ">Only supported for UDF formatted optical volumes. Requires
*CHANGE authority to the parent optical volume. Requires *X authority to each
directory in the path preceding the object. To perform this operation, you
must be the owner of the file, or have *ALLOBJ special authority. Files and
directories on non-UDF formatted volumes are owned by QDFTOWN user profile.</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e118">close (Close File Descriptor)</th>
<td valign="top" width="13.503649635036496%" headers="d0e118 ">Yes</td>
<td valign="top" width="52.919708029197075%" headers="d0e118 ">&nbsp;</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e124">closedir (Close Directory)</th>
<td valign="top" width="13.503649635036496%" headers="d0e124 ">Yes</td>
<td valign="top" width="52.919708029197075%" headers="d0e124 ">&nbsp;</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e130">creat (Create or Rewrite File)</th>
<td valign="top" width="13.503649635036496%" headers="d0e130 ">Yes</td>
<td valign="top" width="52.919708029197075%" headers="d0e130 ">Requires *CHANGE authority to the parent optical volume.
For non-UDF volumes, no other authority is required. For UDF formatted volumes,
*X authority is required to each directory in the path and *WX authority to
the parent directory.<p> The change and modification time stamps for the parent
directory are not updated. </p>
</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e139">dup (Duplicate Open File Descriptor)</th>
<td valign="top" width="13.503649635036496%" headers="d0e139 ">Yes</td>
<td valign="top" width="52.919708029197075%" headers="d0e139 ">&nbsp;</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e145">dup2 (Duplicate Open File Descriptor to Another Descriptor)</th>
<td valign="top" width="13.503649635036496%" headers="d0e145 ">Yes</td>
<td valign="top" width="52.919708029197075%" headers="d0e145 ">&nbsp;</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e151">fchmod (Change File Authorizations by Descriptor)</th>
<td valign="top" width="13.503649635036496%" headers="d0e151 ">Yes</td>
<td valign="top" width="52.919708029197075%" headers="d0e151 ">Only supported for UDF formatted optical volumes. To
perform this operation, you must be the owner of the file or have *ALLOBJ
special authority.</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e158">fchown (Change Owner and Group of File by Descriptor)</th>
<td valign="top" width="13.503649635036496%" headers="d0e158 ">Yes</td>
<td valign="top" width="52.919708029197075%" headers="d0e158 ">Only supported for UDF formatted optical volumes. To
perform this operation, you must be the owner of the file or have *ALLOBJ
special authority. Files and directories on non-UDF formatted volumes are
owned by QDFTOWN user profile.</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e165">fcntl (Perform File Control Command)</th>
<td valign="top" width="13.503649635036496%" headers="d0e165 ">No</td>
<td valign="top" width="52.919708029197075%" headers="d0e165 ">&nbsp;</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e171">fpathconf (Get Configurable Path Name Variables by Descriptor)</th>
<td valign="top" width="13.503649635036496%" headers="d0e171 ">Yes</td>
<td valign="top" width="52.919708029197075%" headers="d0e171 ">&nbsp;</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e177">fstat (Get File Information by Descriptor)</th>
<td valign="top" width="13.503649635036496%" headers="d0e177 ">Yes</td>
<td valign="top" width="52.919708029197075%" headers="d0e177 ">Owner, group, and other mode bits are always on, regardless
of the user's authority to the file. <p>File access time stamp is not changed.</p>
</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e186">fsync (Synchronize Changes to File)</th>
<td valign="top" width="13.503649635036496%" headers="d0e186 ">Yes</td>
<td valign="top" width="52.919708029197075%" headers="d0e186 ">For UDF formatted volumes, data is forced to optical
disk. For non-UDF formatted volumes, data is forced to internal disk storage
that is recoverable through held optical files.</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e193">ftruncate (Truncate File)</th>
<td valign="top" width="13.503649635036496%" headers="d0e193 ">Yes</td>
<td valign="top" width="52.919708029197075%" headers="d0e193 ">&nbsp;</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e199">getcwd (Get Current<sup>®</sup> Directory)</th>
<td valign="top" width="13.503649635036496%" headers="d0e199 ">Yes</td>
<td valign="top" width="52.919708029197075%" headers="d0e199 ">Requires *X authority to the parent optical volume.
For non-UDF volumes, no other authority is required. For UDF formatted volumes,
*RX authority is required to each directory in the path name preceding the
object.</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e209">getegid</th>
<td valign="top" width="13.503649635036496%" headers="d0e209 ">Yes</td>
<td valign="top" width="52.919708029197075%" headers="d0e209 ">&nbsp;</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e215">geteuid</th>
<td valign="top" width="13.503649635036496%" headers="d0e215 ">Yes</td>
<td valign="top" width="52.919708029197075%" headers="d0e215 ">&nbsp;</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e221">getgid</th>
<td valign="top" width="13.503649635036496%" headers="d0e221 ">Yes</td>
<td valign="top" width="52.919708029197075%" headers="d0e221 ">&nbsp;</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e227">getgrid</th>
<td valign="top" width="13.503649635036496%" headers="d0e227 ">Yes</td>
<td valign="top" width="52.919708029197075%" headers="d0e227 ">&nbsp;</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e233">getgrnam</th>
<td valign="top" width="13.503649635036496%" headers="d0e233 ">Yes</td>
<td valign="top" width="52.919708029197075%" headers="d0e233 ">&nbsp;</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e239">getgroups</th>
<td valign="top" width="13.503649635036496%" headers="d0e239 ">Yes</td>
<td valign="top" width="52.919708029197075%" headers="d0e239 ">&nbsp;</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e245">getpwnam</th>
<td valign="top" width="13.503649635036496%" headers="d0e245 ">Yes</td>
<td valign="top" width="52.919708029197075%" headers="d0e245 ">&nbsp;</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e251">getpwuid</th>
<td valign="top" width="13.503649635036496%" headers="d0e251 ">Yes</td>
<td valign="top" width="52.919708029197075%" headers="d0e251 ">&nbsp;</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e257">getuid</th>
<td valign="top" width="13.503649635036496%" headers="d0e257 ">Yes</td>
<td valign="top" width="52.919708029197075%" headers="d0e257 ">&nbsp;</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e263">ioctl (Perform File I/O Control Request)</th>
<td valign="top" width="13.503649635036496%" headers="d0e263 ">No</td>
<td valign="top" width="52.919708029197075%" headers="d0e263 ">&nbsp;</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e269">link (Create Link to File)</th>
<td valign="top" width="13.503649635036496%" headers="d0e269 ">No</td>
<td valign="top" width="52.919708029197075%" headers="d0e269 ">QOPT does not support links.</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e276">lseek (Get File Read/Write Offset)</th>
<td valign="top" width="13.503649635036496%" headers="d0e276 ">Yes</td>
<td valign="top" width="52.919708029197075%" headers="d0e276 ">&nbsp;</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e282">lstat (Get File or Link Information)</th>
<td valign="top" width="13.503649635036496%" headers="d0e282 ">Yes</td>
<td valign="top" width="52.919708029197075%" headers="d0e282 ">File access time stamp is not changed. <p>Requires *X
authority to the parent optical volume. For non-UDF volumes, no other authority
is required. For UDF formatted volumes, *X authority is required to each directory
in the path preceding the object and *R authority is required to the object.</p>
</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e291">mkdir (Make Directory)</th>
<td valign="top" width="13.503649635036496%" headers="d0e291 ">Yes</td>
<td valign="top" width="52.919708029197075%" headers="d0e291 ">Requires *CHANGE authority to the parent optical volume.
For non-UDF volumes, no other authority is required. For UDF formatted volumes,
*X authority is required to each directory in the path and *WX authority to
the parent directory.<p> The change and modification time stamps for the parent
directory are not updated. </p>
<p>Owner ID and group ID are not set.</p>
</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e302">open (Open File)</th>
<td valign="top" width="13.503649635036496%" headers="d0e302 ">Yes</td>
<td valign="top" width="52.919708029197075%" headers="d0e302 ">If the file is opened for write access , *CHANGE authority
is required to the parent optical volume. <p>If the file is opened for read
access, *USE authority is required to the parent optical volume.</p>
<div class="p">For
UDF formatted volumes, the following additional authorization rules apply:<ul><li>Requires *R authority when object is being opened O_RDONLY.</li>
<li>Requires *W authority when object is being opened O_WRONLY.</li>
<li>Requires *RW authority when object is being opened O_RDWR.</li>
<li>Requires *WX to the parent directory when object does not exist and O_CREAT
is specified.</li>
</ul>
</div>
</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e322">opendir (Open Directory)</th>
<td valign="top" width="13.503649635036496%" headers="d0e322 ">Yes</td>
<td valign="top" width="52.919708029197075%" headers="d0e322 ">Requires *USE authority to the parent optical volume.<p>For
UDF formatted volumes, *X authority is required to each directory in the path
preceding the object, and *R authority is required to the object being opened.</p>
</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e331">pathconf (Get Configuration Path Name Variables)</th>
<td valign="top" width="13.503649635036496%" headers="d0e331 ">Yes</td>
<td valign="top" width="52.919708029197075%" headers="d0e331 ">&nbsp;</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e337">Qp0lGetPathFromFileId</th>
<td valign="top" width="13.503649635036496%" headers="d0e337 ">Yes</td>
<td valign="top" width="52.919708029197075%" headers="d0e337 ">&nbsp;</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e343">Qp0lRenameKeep</th>
<td valign="top" width="13.503649635036496%" headers="d0e343 ">Partial</td>
<td valign="top" width="52.919708029197075%" headers="d0e343 ">QOPT does not support renaming a directory. The object
must be a file. <p>Requires *CHANGE authority to the parent optical volume.
For non-UDF volumes, no other authority is required. UDF formatted volumes
require *X authority to each directory in the path, and *WX authority to the
parent directory, and *W authority to the file. If renaming the volume, *RWX
is required to the root (/) directory of the volume.</p>
<p>New and old files
must exist in the same directory.</p>
</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e354">Qp0lRenameUnLink</th>
<td valign="top" width="13.503649635036496%" headers="d0e354 ">Partial</td>
<td valign="top" width="52.919708029197075%" headers="d0e354 ">QOPT does not support renaming a directory. The object
must be a file. <p>Requires *CHANGE authority to the parent optical volume.
For non-UDF volumes, no other authority is required. UDF formatted volumes
require *X authority to each directory in the path, *WX authority to the parent
directory, and *W authority to the file. If renaming the volume, *RWX is required
to the root (/) directory of the volume.</p>
<p>The object that is identified
by a new path cannot exist.</p>
</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e365">read (Read from File)</th>
<td valign="top" width="13.503649635036496%" headers="d0e365 ">Yes</td>
<td valign="top" width="52.919708029197075%" headers="d0e365 ">The file access time is not updated. When reading from
files on volumes formatted in Universal Disk Format (UDF), byte locks on the
range being read are ignored. The same is true for readv().</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e372">readdir (Read Directory Entry)</th>
<td valign="top" width="13.503649635036496%" headers="d0e372 ">Yes</td>
<td valign="top" width="52.919708029197075%" headers="d0e372 ">The directory access time is not updated.</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e379">readlink (Read Value of Symbolic Link)</th>
<td valign="top" width="13.503649635036496%" headers="d0e379 ">No</td>
<td valign="top" width="52.919708029197075%" headers="d0e379 ">QOPT does not have symbolic links.</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e386">rename (Rename File or Directory)</th>
<td valign="top" width="13.503649635036496%" headers="d0e386 ">Partial</td>
<td valign="top" width="52.919708029197075%" headers="d0e386 ">QOPT does not support renaming a directory. The object
must be a file or a volume. <p> Requires *CHANGE authority to the parent optical
volume. For non-UDF volumes, no other authority is required. UDF formatted
volumes require *X authority to each directory in the path, *WX authority
to the parent directory, and *W authority to the file. If renaming the volume,
*RWX is required to the root (/) directory of the volume.</p>
<p>The object
that is identified by a new path cannot exist.</p>
</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e397">rewinddir</th>
<td valign="top" width="13.503649635036496%" headers="d0e397 ">Yes</td>
<td valign="top" width="52.919708029197075%" headers="d0e397 ">&nbsp;</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e403">rmdir (Remove Directory)</th>
<td valign="top" width="13.503649635036496%" headers="d0e403 ">Yes</td>
<td valign="top" width="52.919708029197075%" headers="d0e403 ">Requires *CHANGE authority to the parent optical volume.
For non-UDF volumes, no other authority is required. For UDF formatted volumes,
*X authority is required to each directory in the path and *WX authority is
required to the parent directory.<p>Change and modification time stamps for
the parent directory are not updated. </p>
<p>The operation will not be allowed
if the directory is busy.</p>
</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e414">stat (Get File Information)</th>
<td valign="top" width="13.503649635036496%" headers="d0e414 ">Yes</td>
<td valign="top" width="52.919708029197075%" headers="d0e414 ">File access time stamp is not changed. <p>Requires *X
authority to the parent optical volume. For non-UDF volumes, no other authority
is required. For UDF formatted volumes, *X authority is required to each directory
in the path preceding the object and *R authority is required to the object.
When issued to an optical volume, the size returned is the volume capacity
or 2␠147␠483␠647, whichever is smaller. </p>
</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e423">symlink (Make Symbolic Link)</th>
<td valign="top" width="13.503649635036496%" headers="d0e423 ">No</td>
<td valign="top" width="52.919708029197075%" headers="d0e423 ">QOPT does not support symbolic links.</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e430">sysconf (Get System Configuration Variables)</th>
<td valign="top" width="13.503649635036496%" headers="d0e430 ">Yes</td>
<td valign="top" width="52.919708029197075%" headers="d0e430 ">&nbsp;</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e436">unlink (Remove Link to File)</th>
<td valign="top" width="13.503649635036496%" headers="d0e436 ">Yes</td>
<td valign="top" width="52.919708029197075%" headers="d0e436 ">Requires *CHANGE authority to the parent optical volume.
For non-UDF volumes, no other authority is required. For UDF formatted volumes,
*X authority is required to each directory in the path and *RX authority is
required to the parent directory.<p> Change and modification time stamps for
parent directory are not updated. </p>
<p>Link to a file cannot be removed
when a job has the file opened.</p>
</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e447">unmask (Set Authorization Mask for Job)</th>
<td valign="top" width="13.503649635036496%" headers="d0e447 ">Yes</td>
<td valign="top" width="52.919708029197075%" headers="d0e447 ">&nbsp;</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e453">utime (Set File Access and Modification Times)</th>
<td valign="top" width="13.503649635036496%" headers="d0e453 ">No</td>
<td valign="top" width="52.919708029197075%" headers="d0e453 ">QOPT does not support setting the file access or modification
time.</td>
</tr>
<tr><th valign="top" width="33.57664233576642%" class="firstcol" id="d0e460">write (Write to File)</th>
<td valign="top" width="13.503649635036496%" headers="d0e460 ">Yes</td>
<td valign="top" width="52.919708029197075%" headers="d0e460 ">Change and modification time stamps for the file are
updated when the file is closed. When writing to files on volumes formatted
in Universal Disk Format (UDF), byte locks on the range being written are
ignored. The same is true for writev().</td>
</tr>
</tbody>
</table>
</div>
</div>
</div>
<div>
<div class="familylinks">
<div class="parentlink"><strong>Parent topic:</strong> <a href="ifs.htm" title="Read this topic collection to learn how to use UNIX-type APIs to program your optical file system.">Integrated file system programming</a></div>
</div>
</div>
</body>
</html>
Reference in New Issue Copy Permalink