Prepare for radical source tree reorganization. zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

1 files changed, 137 insertions, 0 deletions

diff --git a/REORG.TODO/libio/oldiofdopen.c b/REORG.TODO/libio/oldiofdopen.c
new file mode 100644
index 0000000000..7f6180767e
--- /dev/null
+++ b/REORG.TODO/libio/oldiofdopen.c
@@ -0,0 +1,137 @@
+/* Copyright (C) 1993-2017 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/>.
+
+   As a special exception, if you link the code in this file with
+   files compiled with a GNU compiler to produce an executable,
+   that does not cause the resulting executable to be covered by
+   the GNU Lesser General Public License.  This exception does not
+   however invalidate any other reasons why the executable file
+   might be covered by the GNU Lesser General Public License.
+   This exception applies to code released by its copyright holders
+   in files containing the exception.  */
+
+#include <shlib-compat.h>
+#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1)
+
+#define _IO_USE_OLD_IO_FILE
+#include <stdlib.h>
+#include "libioP.h"
+#include <fcntl.h>
+
+#ifndef _IO_fcntl
+# define _IO_fcntl __fcntl
+#endif
+
+_IO_FILE *
+attribute_compat_text_section
+_IO_old_fdopen (int fd, const char *mode)
+{
+  int read_write;
+  int posix_mode = 0;
+  struct locked_FILE
+  {
+    struct _IO_FILE_complete_plus fp;
+#ifdef _IO_MTSAFE_IO
+    _IO_lock_t lock;
+#endif
+  } *new_f;
+  int fd_flags;
+
+  switch (*mode++)
+    {
+    case 'r':
+      read_write = _IO_NO_WRITES;
+      break;
+    case 'w':
+      read_write = _IO_NO_READS;
+      break;
+    case 'a':
+      posix_mode = O_APPEND;
+      read_write = _IO_NO_READS|_IO_IS_APPENDING;
+      break;
+    default:
+      MAYBE_SET_EINVAL;
+      return NULL;
+  }
+  if (mode[0] == '+' || (mode[0] == 'b' && mode[1] == '+'))
+    read_write &= _IO_IS_APPENDING;
+#ifdef F_GETFL
+  fd_flags = _IO_fcntl (fd, F_GETFL);
+#ifndef O_ACCMODE
+#define O_ACCMODE (O_RDONLY|O_WRONLY|O_RDWR)
+#endif
+  if (fd_flags == -1
+      || ((fd_flags & O_ACCMODE) == O_RDONLY && !(read_write & _IO_NO_WRITES))
+      || ((fd_flags & O_ACCMODE) == O_WRONLY && !(read_write & _IO_NO_READS)))
+    return NULL;
+
+  /* The May 93 draft of P1003.4/D14.1 (redesignated as 1003.1b)
+     [System Application Program Interface (API) Amendment 1:
+     Realtime Extensions], Rationale B.8.3.3
+     Open a Stream on a File Descriptor says:
+
+         Although not explicitly required by POSIX.1, a good
+         implementation of append ("a") mode would cause the
+         O_APPEND flag to be set.
+
+     (Historical implementations [such as Solaris2] do a one-time
+     seek in fdopen.)
+
+     However, we do not turn O_APPEND off if the mode is "w" (even
+     though that would seem consistent) because that would be more
+     likely to break historical programs.
+     */
+  if ((posix_mode & O_APPEND) && !(fd_flags & O_APPEND))
+    {
+#ifdef F_SETFL
+      if (_IO_fcntl (fd, F_SETFL, fd_flags | O_APPEND) == -1)
+#endif
+	return NULL;
+    }
+#endif
+
+  new_f = (struct locked_FILE *) malloc (sizeof (struct locked_FILE));
+  if (new_f == NULL)
+    return NULL;
+#ifdef _IO_MTSAFE_IO
+  new_f->fp.file._file._lock = &new_f->lock;
+#endif
+  _IO_old_init (&new_f->fp.file._file, 0);
+  _IO_JUMPS_FILE_plus (&new_f->fp) = &_IO_old_file_jumps;
+  _IO_old_file_init_internal ((struct _IO_FILE_plus *) &new_f->fp);
+#if  !_IO_UNIFIED_JUMPTABLES
+  new_f->fp.vtable = NULL;
+#endif
+  if (_IO_old_file_attach (&new_f->fp.file._file, fd) == NULL)
+    {
+      _IO_un_link ((struct _IO_FILE_plus *) &new_f->fp);
+      free (new_f);
+      return NULL;
+    }
+  new_f->fp.file._file._flags &= ~_IO_DELETE_DONT_CLOSE;
+
+  _IO_mask_flags (&new_f->fp.file._file, read_write,
+		  _IO_NO_READS+_IO_NO_WRITES+_IO_IS_APPENDING);
+
+  return (_IO_FILE *) &new_f->fp;
+}
+
+strong_alias (_IO_old_fdopen, __old_fdopen)
+compat_symbol (libc, _IO_old_fdopen, _IO_fdopen, GLIBC_2_0);
+compat_symbol (libc, __old_fdopen, fdopen, GLIBC_2_0);
+
+#endif