X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Fsafe-read.h;h=ba191713b681712ab85b59953e256a78a8b2d978;hb=a3984e06bca84a7654624dd754a7c4c7a5a39a59;hp=3734671de1e8974552cb21887b9b9010cfe6091d;hpb=84acb508aa24433c9e4fa17c1038ed6cac613fba;p=gnulib.git

diff --git a/lib/safe-read.h b/lib/safe-read.h
index 3734671de..ba191713b 100644
--- a/lib/safe-read.h
+++ b/lib/safe-read.h
@@ -1,2 +1,34 @@
-ssize_t
-safe_read (int desc, char *ptr, size_t len);
+/* 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
+
+
+#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