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    char * pathname /* where to return the name */
    )</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
This routine copies the name of the current default path to <i>pathname</i>.
The parameter <i>pathname</i> should be <b>MAX_FILENAME_LENGTH</b> characters long.
<p>
</blockquote><h4>RETURNS</h4><blockquote><p>
N/A
<p>
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./ioLib.html#top">ioLib</a></b>, <b><i><a href="./ioLib.html#ioDefPathSet">ioDefPathSet</a></i>(&nbsp;)</b>, <b><i><a href="./ioLib.html#chdir">chdir</a></i>(&nbsp;)</b>, <b><i><a href="./ioLib.html#getcwd">getcwd</a></i>(&nbsp;)</b>

<hr>
<a name="chdir"></a>
<p align=right>
<a href="rtnIndex.html"><i>Libraries :  Routines</i></a></p>

</blockquote><h1><i>chdir</i>(&nbsp;)</h1> <blockquote></a></blockquote><h4>NAME</h4><blockquote>  
<p><strong><i>chdir</i>(&nbsp;)</strong> - set the current default path</p>

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>STATUS chdir
    (
    char * pathname /* name of the new default path */
    )</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
This routine sets the default I/O path.  All relative pathnames specified
to the I/O system will be prepended with this pathname.  This pathname
must be an absolute pathname, i.e., <i>name</i> must begin with an existing
device name.
<p>
</blockquote><h4>RETURNS</h4><blockquote><p>
<p>
OK, or ERROR if the first component of the pathname is not an existing device.
<p>
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./ioLib.html#top">ioLib</a></b>, <b><i><a href="./ioLib.html#ioDefPathSet">ioDefPathSet</a></i>(&nbsp;)</b>, <b><i><a href="./ioLib.html#ioDefPathGet">ioDefPathGet</a></i>(&nbsp;)</b>, <b><i><a href="./ioLib.html#getcwd">getcwd</a></i>(&nbsp;)</b>

<hr>
<a name="getcwd"></a>
<p align=right>
<a href="rtnIndex.html"><i>Libraries :  Routines</i></a></p>

</blockquote><h1><i>getcwd</i>(&nbsp;)</h1> <blockquote></a></blockquote><h4>NAME</h4><blockquote>  
<p><strong><i>getcwd</i>(&nbsp;)</strong> - get the current default path (POSIX)</p>

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>char *getcwd
    (
    char * buffer, /* where to return the pathname */
    int    size    /* size in bytes of buffer */
    )</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
This routine copies the name of the current default path to <i>buffer</i>.
It provides the same functionality as <b><i><a href="./ioLib.html#ioDefPathGet">ioDefPathGet</a></i>(&nbsp;)</b> and
is provided for POSIX compatibility.
<p>
</blockquote><h4>RETURNS</h4><blockquote><p>
<p>
A pointer to the supplied buffer, or NULL if <i>size</i> is too small to hold
the current default path.
<p>
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./ioLib.html#top">ioLib</a></b>, <b><i><a href="./ioLib.html#ioDefPathSet">ioDefPathSet</a></i>(&nbsp;)</b>, <b><i><a href="./ioLib.html#ioDefPathGet">ioDefPathGet</a></i>(&nbsp;)</b>, <b><i><a href="./ioLib.html#chdir">chdir</a></i>(&nbsp;)</b>

<hr>
<a name="getwd"></a>
<p align=right>
<a href="rtnIndex.html"><i>Libraries :  Routines</i></a></p>

</blockquote><h1><i>getwd</i>(&nbsp;)</h1> <blockquote></a></blockquote><h4>NAME</h4><blockquote>  
<p><strong><i>getwd</i>(&nbsp;)</strong> - get the current default path</p>

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>char *getwd
    (
    char * pathname /* where to return the pathname */
    )</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
This routine copies the name of the current default path to <i>pathname</i>.
It provides the same functionality as <b><i><a href="./ioLib.html#ioDefPathGet">ioDefPathGet</a></i>(&nbsp;)</b> and <b><i><a href="./ioLib.html#getcwd">getcwd</a></i>(&nbsp;)</b>.
It is provided for compatibility with some older UNIX systems.
<p>
The parameter <i>pathname</i> should be <b>MAX_FILENAME_LENGTH</b> characters long.
<p>
</blockquote><h4>RETURNS</h4><blockquote><p>
A pointer to the resulting path name.
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./ioLib.html#top">ioLib</a></b>

<hr>
<a name="ioGlobalStdSet"></a>
<p align=right>
<a href="rtnIndex.html"><i>Libraries :  Routines</i></a></p>

</blockquote><h1><i>ioGlobalStdSet</i>(&nbsp;)</h1> <blockquote></a></blockquote><h4>NAME</h4><blockquote>  
<p><strong><i>ioGlobalStdSet</i>(&nbsp;)</strong> - set the file descriptor for global standard input/output/error</p>

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>void ioGlobalStdSet
    (
    int stdFd, /* std input (0), output (1), or error (2) */
    int newFd  /* new underlying file descriptor */
    )</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
This routine changes the assignment of a specified global standard file
descriptor <i>stdFd</i> (0, 1, or, 2) to the specified underlying file
descriptor <i>newFd</i>.  <i>newFd</i> should be a file descriptor open to the
desired device or file.  All tasks will use this new assignment when doing
I/O to <i>stdFd</i>, unless they have specified a task-specific standard file
descriptor (see <b><i><a href="./ioLib.html#ioTaskStdSet">ioTaskStdSet</a></i>(&nbsp;)</b>).  If <i>stdFd</i> is not 0, 1, or 2, this
routine has no effect.
<p>
</blockquote><h4>RETURNS</h4><blockquote><p>
N/A
<p>
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./ioLib.html#top">ioLib</a></b>, <b><i><a href="./ioLib.html#ioGlobalStdGet">ioGlobalStdGet</a></i>(&nbsp;)</b>, <b><i><a href="./ioLib.html#ioTaskStdSet">ioTaskStdSet</a></i>(&nbsp;)</b>

<hr>
<a name="ioGlobalStdGet"></a>
<p align=right>
<a href="rtnIndex.html"><i>Libraries :  Routines</i></a></p>

</blockquote><h1><i>ioGlobalStdGet</i>(&nbsp;)</h1> <blockquote></a></blockquote><h4>NAME</h4><blockquote>  
<p><strong><i>ioGlobalStdGet</i>(&nbsp;)</strong> - get the file descriptor for global standard input/output/error</p>

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>int ioGlobalStdGet
    (
    int stdFd /* std input (0), output (1), or error (2) */
    )</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
This routine returns the current underlying file descriptor for global 
standard input, output, and error.
<p>
</blockquote><h4>RETURNS</h4><blockquote><p>
<p>
The underlying global file descriptor, or ERROR if <i>stdFd</i> is not 0, 1, or 2.
<p>
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./ioLib.html#top">ioLib</a></b>, <b><i><a href="./ioLib.html#ioGlobalStdSet">ioGlobalStdSet</a></i>(&nbsp;)</b>, <b><i><a href="./ioLib.html#ioTaskStdGet">ioTaskStdGet</a></i>(&nbsp;)</b>

<hr>
<a name="ioTaskStdSet"></a>
<p align=right>
<a href="rtnIndex.html"><i>Libraries :  Routines</i></a></p>

</blockquote><h1><i>ioTaskStdSet</i>(&nbsp;)</h1> <blockquote></a></blockquote><h4>NAME</h4><blockquote>  
<p><strong><i>ioTaskStdSet</i>(&nbsp;)</strong> - set the file descriptor for task standard input/output/error</p>

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>void ioTaskStdSet
    (
    int taskId, /* task whose std fd is to be set (0 = self) */
    int stdFd,  /* std input (0), output (1), or error (2) */
    int newFd   /* new underlying file descriptor */
    )</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
This routine changes the assignment of a specified task-specific standard
file descriptor <i>stdFd</i> (0, 1, or, 2) to the specified underlying file
descriptor<i>newFd</i>.  <i>newFd</i> should be a file descriptor open to the
desired device or file.  The calling task will use this new assignment
when doing I/O to <i>stdFd</i>, instead of the system-wide global assignment
which is used by default.  If <i>stdFd</i> is not 0, 1, or 2, this routine has
no effect.
<p>
</blockquote><h4>NOTE</h4><blockquote><p>
This routine has no effect if it is called at interrupt level.
<p>
</blockquote><h4>RETURNS</h4><blockquote><p>
N/A
<p>
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./ioLib.html#top">ioLib</a></b>, <b><i><a href="./ioLib.html#ioGlobalStdGet">ioGlobalStdGet</a></i>(&nbsp;)</b>, <b><i><a href="./ioLib.html#ioTaskStdGet">ioTaskStdGet</a></i>(&nbsp;)</b>

<hr>
<a name="ioTaskStdGet"></a>
<p align=right>
<a href="rtnIndex.html"><i>Libraries :  Routines</i></a></p>

</blockquote><h1><i>ioTaskStdGet</i>(&nbsp;)</h1> <blockquote></a></blockquote><h4>NAME</h4><blockquote>  
<p><strong><i>ioTaskStdGet</i>(&nbsp;)</strong> - get the file descriptor for task standard input/output/error</p>

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>int ioTaskStdGet
    (
    int taskId, /* ID of desired task (0 = self) */
    int stdFd   /* std input (0), output (1), or error (2) */
    )</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
This routine returns the current underlying file descriptor for task-specific
standard input, output, and error.
<p>
</blockquote><h4>RETURNS</h4><blockquote><p>
<p>
The underlying file descriptor, or ERROR if <i>stdFd</i> is not 0, 1, or 2, or
the routine is called at interrupt level.
<p>
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./ioLib.html#top">ioLib</a></b>, <b><i><a href="./ioLib.html#ioGlobalStdGet">ioGlobalStdGet</a></i>(&nbsp;)</b>, <b><i><a href="./ioLib.html#ioTaskStdSet">ioTaskStdSet</a></i>(&nbsp;)</b>

<hr>
<a name="isatty"></a>
<p align=right>
<a href="rtnIndex.html"><i>Libraries :  Routines</i></a></p>

</blockquote><h1><i>isatty</i>(&nbsp;)</h1> <blockquote></a></blockquote><h4>NAME</h4><blockquote>  
<p><strong><i>isatty</i>(&nbsp;)</strong> - return whether the underlying driver is a tty device</p>

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>BOOL isatty
    (
    int fd /* file descriptor to check */
    )</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
This routine simply invokes the <b><i><a href="./ioLib.html#ioctl">ioctl</a></i>(&nbsp;)</b> function FIOISATTY on the
specified file descriptor.
<p>
</blockquote><h4>RETURNS</h4><blockquote><p>
TRUE, or FALSE if the driver does not indicate a tty device.
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./ioLib.html#top">ioLib</a></b>

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