Loading...
--- Libc/Libc-1725.40.4/stdio/FreeBSD/fwrite.c
+++ Libc/Libc-320/stdio/FreeBSD/fwrite.c
@@ -13,6 +13,10 @@
* 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 acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
@@ -34,7 +38,7 @@
static char sccsid[] = "@(#)fwrite.c 8.1 (Berkeley) 6/4/93";
#endif /* LIBC_SCCS and not lint */
#include <sys/cdefs.h>
-__FBSDID("$FreeBSD: src/lib/libc/stdio/fwrite.c,v 1.13 2009/07/12 13:09:43 ed Exp $");
+__FBSDID("$FreeBSD: src/lib/libc/stdio/fwrite.c,v 1.11 2002/10/12 16:13:41 mike Exp $");
#include "namespace.h"
#include <stdio.h>
@@ -42,61 +46,35 @@
#include "local.h"
#include "fvwrite.h"
#include "libc_private.h"
-#include "libc_hooks_impl.h"
-
-/*
- * The maximum amount to write to avoid integer overflow (especially for
- * uio_resid in struct __suio). INT_MAX is odd, so it make sense to make it
- * even. We subtract (BUFSIZ - 1) to get a whole number of BUFSIZ chunks.
- */
-#define MAXWRITE (INT_MAX - (BUFSIZ - 1))
/*
* Write `count' objects (each size `size') from memory to the given file.
* Return the number of whole objects written.
*/
size_t
-fwrite(const void * __restrict buf, size_t size, size_t count,
- FILE * __restrict fp)
+fwrite(buf, size, count, fp)
+ const void * __restrict buf;
+ size_t size, count;
+ FILE * __restrict fp;
{
- size_t n, resid;
+ size_t n;
struct __suio uio;
struct __siov iov;
- int s;
- /*
- * ANSI and SUSv2 require a return value of 0 if size or count are 0.
- */
- n = count * size;
-#if __DARWIN_UNIX03
- if (n == 0)
- return (0);
-#endif
+ iov.iov_base = (void *)buf;
+ uio.uio_resid = iov.iov_len = n = count * size;
uio.uio_iov = &iov;
uio.uio_iovcnt = 1;
- libc_hooks_will_write(fp, sizeof(*fp));
-
FLOCKFILE(fp);
ORIENT(fp, -1);
-
- for (resid = n; resid > 0; buf += s, resid -= s) {
- s = resid > INT_MAX ? MAXWRITE : (int)resid;
- iov.iov_base = (void *)buf;
- uio.uio_resid = iov.iov_len = s;
-
- libc_hooks_will_read(buf, s);
-
- /*
- * The usual case is success (__sfvwrite returns 0);
- * skip the divide if this happens, since divides are
- * generally slow and since this occurs whenever size==0.
- */
- if (__sfvwrite(fp, &uio) != 0) {
- count = (n - resid + s - uio.uio_resid) / size;
- break;
- }
- }
+ /*
+ * The usual case is success (__sfvwrite returns 0);
+ * skip the divide if this happens, since divides are
+ * generally slow and since this occurs whenever size==0.
+ */
+ if (__sfvwrite(fp, &uio) != 0)
+ count = (n - uio.uio_resid) / size;
FUNLOCKFILE(fp);
return (count);
}