allow renaming bootstrap, and change the name of bootstrap.conf accordingly

[gnulib.git] / lib / unistd.in.h

diff --git a/lib/unistd.in.h b/lib/unistd.in.h
index e75b4cd..71eaa4d 100644 (file)
--- a/lib/unistd.in.h
+++ b/lib/unistd.in.h
@@ -140,6 +140,23 @@ extern int dup2 (int, int);
 #endif
 
 
+#if @GNULIB_FSYNC@
+/* Synchronize changes to a file.
+   Return 0 if successful, otherwise -1 and errno set.
+   See POSIX:2001 specification
+   <http://www.opengroup.org/susv3xsh/fsync.html>.  */
+# if !@HAVE_FSYNC@
+extern int fsync (int fd);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef fsync
+# define fsync(fd) \
+    (GL_LINK_WARNING ("fsync is unportable - " \
+                      "use gnulib module fsync for portability"), \
+     fsync (fd))
+#endif
+
+
 #if @GNULIB_FTRUNCATE@
 # if !@HAVE_FTRUNCATE@
 /* Change the size of the file to which FD is opened to become equal to LENGTH.