diff options
Diffstat (limited to 'file_io/unix/filedup.c')
| -rw-r--r-- | file_io/unix/filedup.c | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/file_io/unix/filedup.c b/file_io/unix/filedup.c new file mode 100644 index 000000000..42df990ea --- /dev/null +++ b/file_io/unix/filedup.c @@ -0,0 +1,108 @@ +/* ==================================================================== + * Copyright (c) 1999 The Apache Group. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * 3. All advertising materials mentioning features or use of this + * software must display the following acknowledgment: + * "This product includes software developed by the Apache Group + * for use in the Apache HTTP server project (http://www.apache.org/)." + * + * 4. The names "Apache Server" and "Apache Group" must not be used to + * endorse or promote products derived from this software without + * prior written permission. For written permission, please contact + * apache@apache.org. + * + * 5. Products derived from this software may not be called "Apache" + * nor may "Apache" appear in their names without prior written + * permission of the Apache Group. + * + * 6. Redistributions of any form whatsoever must retain the following + * acknowledgment: + * "This product includes software developed by the Apache Group + * for use in the Apache HTTP server project (http://www.apache.org/)." + * + * THIS SOFTWARE IS PROVIDED BY THE APACHE GROUP ``AS IS'' AND ANY + * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE APACHE GROUP OR + * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + * ==================================================================== + * + * This software consists of voluntary contributions made by many + * individuals on behalf of the Apache Group. + * For more information on the Apache Group and the Apache HTTP server + * project, please see <http://www.apache.org/>. + * + */ + +#include "fileio.h" +#include "apr_file_io.h" +#include "apr_general.h" +#include "apr_lib.h" +#include <string.h> + +/* ***APRDOC******************************************************** + * ap_status_t ap_dupfile(ap_file_t *, ap_file_t **) + * duplicate the specified file descriptor. + * arg 1) The file to duplicate. + * arg 2) The structure to duplicate into. + */ +ap_status_t ap_dupfile(struct file_t *old_file, struct file_t **new_file) +{ + char *buf_oflags; + (*new_file) = (struct file_t *)ap_palloc(old_file->cntxt, + sizeof(struct file_t)); + + if ((*new_file) == NULL) { + return APR_ENOMEM; + } + (*new_file)->cntxt = old_file->cntxt; + if (old_file->buffered) { + switch (old_file->oflags) { + case O_RDONLY: + buf_oflags = "r"; + break; + case O_WRONLY: + buf_oflags = "w"; + break; + case O_RDWR: + buf_oflags = "r+"; + break; + } + (*new_file)->filehand = freopen(old_file->fname, buf_oflags, + old_file->filehand); + } + else { + (*new_file)->filedes = dup(old_file->filedes); + } + (*new_file)->fname = ap_pstrdup(old_file->cntxt, old_file->fname); + (*new_file)->buffered = old_file->buffered; + (*new_file)->protection = old_file->protection; + (*new_file)->user = old_file->user; + (*new_file)->group = old_file->group; + (*new_file)->size = old_file->size; + (*new_file)->atime = old_file->atime; + (*new_file)->mtime = old_file->mtime; + (*new_file)->ctime = old_file->ctime; + ap_register_cleanup((*new_file)->cntxt, (void *)(*new_file), file_cleanup, NULL); + return APR_SUCCESS; +} + |