mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-11 09:50:12 +00:00
59 lines
1.9 KiB
C
59 lines
1.9 KiB
C
/*
|
|
* Copyright (c) 1995,1999 Theo de Raadt. All rights reserved.
|
|
* 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 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 AUTHOR 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.
|
|
*/
|
|
|
|
#include "includes.h"
|
|
RCSID("$OpenBSD: atomicio.c,v 1.9 2001/03/02 18:54:30 deraadt Exp $");
|
|
|
|
#include "xmalloc.h"
|
|
#include "atomicio.h"
|
|
|
|
/*
|
|
* ensure all of data on socket comes through. f==read || f==write
|
|
*/
|
|
ssize_t
|
|
atomicio(f, fd, _s, n)
|
|
ssize_t (*f) ();
|
|
int fd;
|
|
void *_s;
|
|
size_t n;
|
|
{
|
|
char *s = _s;
|
|
ssize_t res, pos = 0;
|
|
|
|
while (n > pos) {
|
|
res = (f) (fd, s + pos, n - pos);
|
|
switch (res) {
|
|
case -1:
|
|
if (errno == EINTR || errno == EAGAIN)
|
|
continue;
|
|
case 0:
|
|
return (res);
|
|
default:
|
|
pos += res;
|
|
}
|
|
}
|
|
return (pos);
|
|
}
|