initial import

sysdeps/posix/truncate.c

@@ -0,0 +1,41 @@
+/* Copyright (C) 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <sys/types.h>
+#include <errno.h>
+#include <unistd.h>
+
+/* Truncate PATH to LENGTH bytes.  */
+int
+DEFUN(truncate, (path, length),
+      CONST char *path AND off_t length)
+{
+  int fd, ret, save;
+
+  fd = open (path, O_WRONLY);
+  if (fd < 0)
+    return -1;
+
+  ret = ftruncate (fd, length);
+  save = errno;
+  (void) close (fd);
+  if (ret < 0)
+    errno = save;
+  return ret;
+}