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| <h3 class="section">4.51 <code>remove</code>—delete a file's name</h3> |
| |
| <p><a name="index-remove-258"></a><a name="index-g_t_005fremove_005fr-259"></a><strong>Synopsis</strong> |
| <pre class="example"> #include <stdio.h> |
| int remove(char *<var>filename</var>); |
| |
| int _remove_r(struct _reent *<var>reent</var>, char *<var>filename</var>); |
| |
| </pre> |
| <p><strong>Description</strong><br> |
| Use <code>remove</code> to dissolve the association between a particular |
| filename (the string at <var>filename</var>) and the file it represents. |
| After calling <code>remove</code> with a particular filename, you will no |
| longer be able to open the file by that name. |
| |
| <p>In this implementation, you may use <code>remove</code> on an open file without |
| error; existing file descriptors for the file will continue to access |
| the file's data until the program using them closes the file. |
| |
| <p>The alternate function <code>_remove_r</code> is a reentrant version. The |
| extra argument <var>reent</var> is a pointer to a reentrancy structure. |
| |
| <p><br> |
| <strong>Returns</strong><br> |
| <code>remove</code> returns <code>0</code> if it succeeds, <code>-1</code> if it fails. |
| |
| <p><br> |
| <strong>Portability</strong><br> |
| ANSI C requires <code>remove</code>, but only specifies that the result on |
| failure be nonzero. The behavior of <code>remove</code> when you call it on an |
| open file may vary among implementations. |
| |
| <p>Supporting OS subroutine required: <code>unlink</code>. |
| |
| <p><br> |
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