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| <title>Debugging with GDB: write</title> |
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| <a name="write-1"></a> |
| <h4 class="unnumberedsubsubsec">write</h4> |
| <a name="index-write_002c-file_002di_002fo-system-call"></a> |
| |
| <dl compact="compact"> |
| <dt>Synopsis:</dt> |
| <dd><div class="smallexample"> |
| <pre class="smallexample">int write(int fd, const void *buf, unsigned int count); |
| </pre></div> |
| |
| </dd> |
| <dt>Request:</dt> |
| <dd><p>‘<samp>Fwrite,<var>fd</var>,<var>bufptr</var>,<var>count</var></samp>’ |
| </p> |
| </dd> |
| <dt>Return value:</dt> |
| <dd><p>On success, the number of bytes written are returned. |
| Zero indicates nothing was written. On error, -1 |
| is returned. |
| </p> |
| </dd> |
| <dt>Errors:</dt> |
| <dd> |
| <dl compact="compact"> |
| <dt><code>EBADF</code></dt> |
| <dd><p><var>fd</var> is not a valid file descriptor or is not open for |
| writing. |
| </p> |
| </dd> |
| <dt><code>EFAULT</code></dt> |
| <dd><p><var>bufptr</var> is an invalid pointer value. |
| </p> |
| </dd> |
| <dt><code>EFBIG</code></dt> |
| <dd><p>An attempt was made to write a file that exceeds the |
| host-specific maximum file size allowed. |
| </p> |
| </dd> |
| <dt><code>ENOSPC</code></dt> |
| <dd><p>No space on device to write the data. |
| </p> |
| </dd> |
| <dt><code>EINTR</code></dt> |
| <dd><p>The call was interrupted by the user. |
| </p></dd> |
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