aboutsummaryrefslogtreecommitdiff
path: root/sysdeps/posix/truncate.c
diff options
context:
space:
mode:
authorRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
committerRoland McGrath <roland@gnu.org>1995-02-18 01:27:10 +0000
commit28f540f45bbacd939bfd07f213bcad2bf730b1bf (patch)
tree15f07c4c43d635959c6afee96bde71fb1b3614ee /sysdeps/posix/truncate.c
downloadglibc-28f540f45bbacd939bfd07f213bcad2bf730b1bf.tar
glibc-28f540f45bbacd939bfd07f213bcad2bf730b1bf.tar.gz
glibc-28f540f45bbacd939bfd07f213bcad2bf730b1bf.tar.bz2
glibc-28f540f45bbacd939bfd07f213bcad2bf730b1bf.zip
initial import
Diffstat (limited to 'sysdeps/posix/truncate.c')
-rw-r--r--sysdeps/posix/truncate.c41
1 files changed, 41 insertions, 0 deletions
diff --git a/sysdeps/posix/truncate.c b/sysdeps/posix/truncate.c
new file mode 100644
index 0000000000..9fe0d86a0a
--- /dev/null
+++ b/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;
+}