X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Fsafe-read.h;h=ba191713b681712ab85b59953e256a78a8b2d978;hb=a0dc688369a937a657cdf8d35f362c3068b0af9a;hp=8e4b165cbfe44e78ff23f59b15969b90d73c9c2c;hpb=3823a2720aca4634e4875129d9e16e9e8018b700;p=gnulib.git

diff --git a/lib/safe-read.h b/lib/safe-read.h
index 8e4b165cb..ba191713b 100644
--- a/lib/safe-read.h
+++ b/lib/safe-read.h
@@ -1,10 +1,34 @@
-#ifndef PARAMS
-# if defined PROTOTYPES || (defined __STDC__ && __STDC__)
-#  define PARAMS(Args) Args
-# else
-#  define PARAMS(Args) ()
-# endif
+/* An interface to read() that retries after interrupts.
+   Copyright (C) 2002, 2006 Free Software Foundation, Inc.
+
+   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 3 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, see <http://www.gnu.org/licenses/>.  */
+
+#include <stddef.h>
+
+#ifdef __cplusplus
+extern "C" {
 #endif
 
-ssize_t
-safe_read PARAMS ((int desc, void *ptr, size_t len));
+
+#define SAFE_READ_ERROR ((size_t) -1)
+
+/* Read up to COUNT bytes at BUF from descriptor FD, retrying if interrupted.
+   Return the actual number of bytes read, zero for EOF, or SAFE_READ_ERROR
+   upon error.  */
+extern size_t safe_read (int fd, void *buf, size_t count);
+
+
+#ifdef __cplusplus
+}
+#endif