X-Git-Url: http://andersk.mit.edu/gitweb/openssh.git/blobdiff_plain/610cd5c69abf954f120a0f45c907617e597b2f75..9c54c067cca6a1d021a6d5120e0adc05f3252a97:/atomicio.c

diff --git a/atomicio.c b/atomicio.c
index f9a36487..12abbda1 100644
--- a/atomicio.c
+++ b/atomicio.c
@@ -1,5 +1,6 @@
 /*
- * Copyright (c) 1999 Theo de Raadt
+ * Copyright (c) 2005 Anil Madhavapeddy. All rights reserved.
+ * Copyright (c) 1995,1999 Theo de Raadt.  All rights reserved.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -24,34 +25,40 @@
  */
 
 #include "includes.h"
-RCSID("$Id$");
+RCSID("$OpenBSD: atomicio.c,v 1.13 2005/05/24 17:32:43 avsm Exp $");
 
-#include "xmalloc.h"
-#include "ssh.h"
+#include "atomicio.h"
 
 /*
- * ensure all of data on socket comes through. f==read || f==write
+ * ensure all of data on socket comes through. f==read || f==vwrite
  */
-ssize_t
+size_t
 atomicio(f, fd, _s, n)
-	ssize_t (*f) ();
+	ssize_t (*f) (int, void *, size_t);
 	int fd;
 	void *_s;
 	size_t n;
 {
 	char *s = _s;
-	ssize_t res, pos = 0;
+	size_t pos = 0;
+	ssize_t res;
 
 	while (n > pos) {
-		res = (f) (fd, (char*)s + pos, n - pos);
+		res = (f) (fd, s + pos, n - pos);
 		switch (res) {
 		case -1:
+#ifdef EWOULDBLOCK
+			if (errno == EINTR || errno == EAGAIN || errno == EWOULDBLOCK)
+#else
 			if (errno == EINTR || errno == EAGAIN)
+#endif
 				continue;
+			return 0;
 		case 0:
-			return (res);
+			errno = EPIPE;
+			return pos;
 		default:
-			pos += res;
+			pos += (u_int)res;
 		}
 	}
 	return (pos);