/*
* Utility routines.
*
- * Copyright (C) 1999,2000,2001 by Erik Andersen <andersee@debian.org>
+ * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
*/
-#include <stdio.h>
-#include <unistd.h>
#include "libbb.h"
/*
* This does multiple writes as necessary.
* Returns the amount written, or -1 on an error.
*/
-int full_write(int fd, const char *buf, int len)
+ssize_t FAST_FUNC full_write(int fd, const void *buf, size_t len)
{
- int cc;
- int total;
+ ssize_t cc;
+ ssize_t total;
total = 0;
- while (len > 0) {
- cc = write(fd, buf, len);
+ while (len) {
+ cc = safe_write(fd, buf, len);
- if (cc < 0)
- return -1;
+ if (cc < 0) {
+ if (total) {
+ /* we already wrote some! */
+ /* user can do another write to know the error code */
+ return total;
+ }
+ return cc; /* write() returns -1 on failure. */
+ }
- buf += cc;
total += cc;
+ buf = ((const char *)buf) + cc;
len -= cc;
}
return total;
}
-
-
-/* END CODE */
-/*
-Local Variables:
-c-file-style: "linux"
-c-basic-offset: 4
-tab-width: 4
-End:
-*/