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-rw-r--r--REORG.TODO/sysdeps/posix/truncate.c44
1 files changed, 44 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/posix/truncate.c b/REORG.TODO/sysdeps/posix/truncate.c
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+++ b/REORG.TODO/sysdeps/posix/truncate.c
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+/* Truncate a file given by name.  Generic POSIX.1 version.
+   Copyright (C) 1995-2017 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 Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <sys/types.h>
+#include <errno.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+/* Truncate PATH to LENGTH bytes.  */
+int
+__truncate (const char *path, off_t length)
+{
+  int fd, ret, save;
+
+  fd = __open (path, O_WRONLY | (length == 0 ? O_TRUNC : 0));
+  if (fd < 0)
+    return -1;
+
+  if (length == 0)
+    ret = 0;
+  else
+    ret = __ftruncate (fd, length);
+  save = errno;
+  (void) __close (fd);
+  if (ret < 0)
+    __set_errno (save);
+  return ret;
+}
+weak_alias (__truncate, truncate)