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, 87 insertions, 0 deletions

diff --git a/REORG.TODO/sysdeps/unix/sysv/linux/internal_statvfs.c b/REORG.TODO/sysdeps/unix/sysv/linux/internal_statvfs.c
new file mode 100644
index 0000000000..9a17ca5c17
--- /dev/null
+++ b/REORG.TODO/sysdeps/unix/sysv/linux/internal_statvfs.c
@@ -0,0 +1,87 @@
+/* Copyright (C) 1998-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
+
+   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 <assert.h>
+#include <errno.h>
+#include <mntent.h>
+#include <paths.h>
+#include <stdbool.h>
+#include <stdio_ext.h>
+#include <string.h>
+#include <sys/mount.h>
+#include <sys/stat.h>
+#include <sys/statfs.h>
+#include <sys/statvfs.h>
+#include "linux_fsinfo.h"
+#include <kernel-features.h>
+
+
+/* Special internal-only bit value.  */
+#define ST_VALID 0x0020
+
+
+#ifndef STATFS
+# define STATFS statfs
+# define STATVFS statvfs
+# define INTERNAL_STATVFS __internal_statvfs
+#else
+extern int __statvfs_getflags (const char *name, int fstype, int fd);
+#endif
+
+
+void
+INTERNAL_STATVFS (const char *name, struct STATVFS *buf,
+		  struct STATFS *fsbuf, int fd)
+{
+  /* Now fill in the fields we have information for.  */
+  buf->f_bsize = fsbuf->f_bsize;
+  /* Linux has the f_frsize size only in later version of the kernel.
+     If the value is not filled in use f_bsize.  */
+  buf->f_frsize = fsbuf->f_frsize ?: fsbuf->f_bsize;
+  buf->f_blocks = fsbuf->f_blocks;
+  buf->f_bfree = fsbuf->f_bfree;
+  buf->f_bavail = fsbuf->f_bavail;
+  buf->f_files = fsbuf->f_files;
+  buf->f_ffree = fsbuf->f_ffree;
+  if (sizeof (buf->f_fsid) == sizeof (fsbuf->f_fsid))
+    /* The shifting uses 'unsigned long long int' even though the target
+       field might only have 32 bits.  This is OK since the 'if' branch
+       is not used in this case but the compiler would still generate
+       warnings.  */
+    buf->f_fsid = ((fsbuf->f_fsid.__val[0]
+		    & ((1ULL << (8 * sizeof (fsbuf->f_fsid.__val[0]))) - 1))
+		   | ((unsigned long long int) fsbuf->f_fsid.__val[1]
+		      << (8 * (sizeof (buf->f_fsid)
+			       - sizeof (fsbuf->f_fsid.__val[0])))));
+  else
+    /* We cannot help here.  The statvfs element is not large enough to
+       contain both words of the statfs f_fsid field.  */
+    buf->f_fsid = fsbuf->f_fsid.__val[0];
+#ifdef _STATVFSBUF_F_UNUSED
+  buf->__f_unused = 0;
+#endif
+  buf->f_namemax = fsbuf->f_namelen;
+  memset (buf->__f_spare, '\0', sizeof (buf->__f_spare));
+
+  /* What remains to do is to fill the fields f_favail and f_flag.  */
+
+  /* XXX I have no idea how to compute f_favail.  Any idea???  */
+  buf->f_favail = buf->f_ffree;
+
+  buf->f_flag = fsbuf->f_flags ^ ST_VALID;
+}