81 lines
3.2 KiB
HTML
81 lines
3.2 KiB
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<title>write - Debugging with GDB</title>
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<link rel="up" href="List-of-Supported-Calls.html#List-of-Supported-Calls" title="List of Supported Calls">
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<div class="node">
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<a name="write"></a>
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<p>
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Next: <a rel="next" accesskey="n" href="lseek.html#lseek">lseek</a>,
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Previous: <a rel="previous" accesskey="p" href="read.html#read">read</a>,
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Up: <a rel="up" accesskey="u" href="List-of-Supported-Calls.html#List-of-Supported-Calls">List of Supported Calls</a>
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<hr>
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</div>
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<h5 class="unnumberedsubsubsec">write</h5>
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<p><a name="index-write_002c-file_002di_002fo-system-call-3607"></a>
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<dl>
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<dt>Synopsis:<dd>
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<pre class="smallexample"> int write(int fd, const void *buf, unsigned int count);
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</pre>
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<br><dt>Request:<dd>‘<samp><span class="samp">Fwrite,</span><var>fd</var><span class="samp">,</span><var>bufptr</var><span class="samp">,</span><var>count</var></samp>’
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<br><dt>Return value:<dd>On success, the number of bytes written are returned.
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Zero indicates nothing was written. On error, -1
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is returned.
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<br><dt>Errors:<dd>
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<dl>
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<dt><code>EBADF</code><dd><var>fd</var> is not a valid file descriptor or is not open for
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writing.
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<br><dt><code>EFAULT</code><dd><var>bufptr</var> is an invalid pointer value.
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<br><dt><code>EFBIG</code><dd>An attempt was made to write a file that exceeds the
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host-specific maximum file size allowed.
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<br><dt><code>ENOSPC</code><dd>No space on device to write the data.
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<br><dt><code>EINTR</code><dd>The call was interrupted by the user.
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</dl>
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</dl>
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</body></html>
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