inetlib.html

vxworks相关论文

<b><a href="./inetLib.html#top">inetLib</a></b>, <b><i><a href="./inetLib.html#inet_makeaddr_b">inet_makeaddr_b</a></i>(&nbsp;)</b>

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

</blockquote><h1><i>inet_netof</i>(&nbsp;)</h1> <blockquote></a></blockquote><h4>NAME</h4><blockquote>  
<p><strong><i>inet_netof</i>(&nbsp;)</strong> - return the network number from an Internet address</p>

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>int inet_netof
    (
    struct in_addr inetAddress /* inet address */
    )</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
This routine extracts the network portion of an Internet address.
<p>
</blockquote><h4>EXAMPLE</h4><blockquote><p>
The following example returns 0x5a:
<pre>    inet_netof (0x5a000002);
</pre>

</blockquote><h4>RETURNS</h4><blockquote><p>
The network portion of <i>inetAddress</i>.
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./inetLib.html#top">inetLib</a></b>

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

</blockquote><h1><i>inet_netof_string</i>(&nbsp;)</h1> <blockquote></a></blockquote><h4>NAME</h4><blockquote>  
<p><strong><i>inet_netof_string</i>(&nbsp;)</strong> - extract the network address in dot notation</p>

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>void inet_netof_string
    (
    char * inetString, /* inet addr to extract local portion from */
    char * netString   /* net inet address to return */
    )</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
This routine extracts the network Internet address from a host Internet
address (specified in dotted decimal notation).  The routine handles 
class A, B, and C network addresses.  The buffer <i>netString</i> should 
be <b>INET_ADDR_LEN</b> bytes long.
<p>
</blockquote><h4>NOTE</h4><blockquote><p>
This is the only routine in <b><a href="./inetLib.html#top">inetLib</a></b> that handles subnet masks correctly.
<p>
</blockquote><h4>EXAMPLE</h4><blockquote><p>
The following example copies "90.0.0.0" to <i>netString</i>:
<pre>    inet_netof_string ("90.0.0.2", netString);
</pre>

</blockquote><h4>RETURNS</h4><blockquote><p>
N/A
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./inetLib.html#top">inetLib</a></b>

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

</blockquote><h1><i>inet_network</i>(&nbsp;)</h1> <blockquote></a></blockquote><h4>NAME</h4><blockquote>  
<p><strong><i>inet_network</i>(&nbsp;)</strong> - convert an Internet network number from string to address</p>

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>u_long inet_network
    (
    char * inetString /* string version of inet addr */
    )</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
This routine forms a network address from an ASCII string containing
an Internet network number.
<p>
</blockquote><h4>EXAMPLE</h4><blockquote><p>
The following example returns 0x5a:
<pre>    inet_network ("90");
</pre>

</blockquote><h4>RETURNS</h4><blockquote><p>
The Internet address version of an ASCII string.
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./inetLib.html#top">inetLib</a></b>

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

</blockquote><h1><i>inet_ntoa_b</i>(&nbsp;)</h1> <blockquote></a></blockquote><h4>NAME</h4><blockquote>  
<p><strong><i>inet_ntoa_b</i>(&nbsp;)</strong> - convert an network address to dot notation, store it in a buffer</p>

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>void inet_ntoa_b
    (
    struct in_addr inetAddress, /* inet address */
    char *         pString      /* where to return ASCII string */
    )</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
This routine converts an Internet address in network format to dotted
decimal notation.
<p>
This routine is identical to the UNIX <b><i><a href="./inetLib.html#inet_ntoa">inet_ntoa</a></i>(&nbsp;)</b> routine
except that you must provide a buffer of size <b>INET_ADDR_LEN</b>.
<p>
</blockquote><h4>EXAMPLE</h4><blockquote><p>
The following example copies the string "90.0.0.2" to <i>pString</i>:
<pre>    struct in_addr iaddr;
     ...
    iaddr.s_addr = 0x5a000002;
     ...
    inet_ntoa_b (iaddr, pString);
</pre>

</blockquote><h4>RETURNS</h4><blockquote><p>
N/A
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./inetLib.html#top">inetLib</a></b>

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

</blockquote><h1><i>inet_ntoa</i>(&nbsp;)</h1> <blockquote></a></blockquote><h4>NAME</h4><blockquote>  
<p><strong><i>inet_ntoa</i>(&nbsp;)</strong> - convert a network address to dotted decimal notation</p>

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>char *inet_ntoa
    (
    struct in_addr inetAddress /* inet address */
    )</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
This routine converts an Internet address in network format to dotted
decimal notation.
<p>
</blockquote><h4>WARNING</h4><blockquote><p>
This routine is supplied for UNIX compatibility only.  Each time this
routine is called, 18 bytes are allocated from memory.  Use <b><i><a href="./inetLib.html#inet_ntoa_b">inet_ntoa_b</a></i>(&nbsp;)</b>
instead.
<p>
</blockquote><h4>EXAMPLE</h4><blockquote><p>
The following example returns a pointer to the string "90.0.0.2":
<pre>    struct in_addr iaddr;
     ...
    iaddr.s_addr = 0x5a000002;
     ...
    inet_ntoa (iaddr);
</pre>

</blockquote><h4>RETURNS</h4><blockquote><p>
A pointer to the string version of an Internet address.
<p>
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./inetLib.html#top">inetLib</a></b>, <b><i><a href="./inetLib.html#inet_ntoa_b">inet_ntoa_b</a></i>(&nbsp;)</b>

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

</blockquote><h1><i>inet_aton</i>(&nbsp;)</h1> <blockquote></a></blockquote><h4>NAME</h4><blockquote>  
<p><strong><i>inet_aton</i>(&nbsp;)</strong> - convert a network address from dot notation, store in a structure</p>

</blockquote><h4>SYNOPSIS</h4><blockquote><p>
<pre>STATUS inet_aton
    (
    char *           pString,    /* string containing address, dot notation */
    struct in_addr * inetAddress /* struct in which to store address */
    )</pre>

</blockquote><h4>DESCRIPTION</h4><blockquote><p>
This routine interprets an Internet address.  All the network library
routines call this routine to interpret entries in the data bases
that are expected to be an address.  The value returned is stored in
network byte order in the structure provided.
<p>
</blockquote><h4>EXAMPLE</h4><blockquote><p>
The following example returns 0x5a000002 in the <b>s_addr</b> member of the 
structure pointed to by <i>pinetAddr</i>:
<pre>    inet_addr ("90.0.0.2", pinetAddr);
</pre>

</blockquote><h4>RETURNS</h4><blockquote><p>
OK, or ERROR.
</blockquote><h4>SEE ALSO</h4><blockquote><p>
<b><a href="./inetLib.html#top">inetLib</a></b>

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