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, 98 insertions, 0 deletions

diff --git a/REORG.TODO/sysdeps/unix/sysv/linux/tst-fallocate-common.c b/REORG.TODO/sysdeps/unix/sysv/linux/tst-fallocate-common.c
new file mode 100644
index 0000000000..7f2e55cf36
--- /dev/null
+++ b/REORG.TODO/sysdeps/unix/sysv/linux/tst-fallocate-common.c
@@ -0,0 +1,98 @@
+/* Basic fallocate test (no specific flags is checked).
+   Copyright (C) 2016-2017 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 <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <stdint.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <support/support.h>
+#include <support/check.h>
+#include <support/temp_file.h>
+
+#define XSTR(s) STR(S)
+#define STR(s)  #s
+
+static char *temp_filename;
+static int temp_fd;
+
+static void
+do_prepare (int argc, char **argv)
+{
+  temp_fd = create_temp_file ("tst-fallocate.", &temp_filename);
+  if (temp_fd == -1)
+    FAIL_EXIT1 ("cannot create temporary file: %m");
+}
+#define PREPARE do_prepare
+
+static int
+do_test_with_offset (off_t offset)
+{
+  int ret;
+  struct stat finfo;
+#define BLK_SIZE 1024
+  char bwrite[BLK_SIZE] = { 0xf0 };
+  char bread[BLK_SIZE];
+
+  /* It tries to fallocate 1024 bytes from 'offset' and then write 1024 bytes.
+     After both operation rewind the file descriptor and read 1024 bytes
+     and check if both buffer have the same contents.  */
+  ret = fallocate (temp_fd, 0, offset, BLK_SIZE);
+  if (ret == -1)
+    {
+      /* fallocate might not be fully supported by underlying filesystem (for
+	 instance some NFS versions).   */
+      if (errno == EOPNOTSUPP)
+	FAIL_EXIT (77, "fallocate not supported");
+      FAIL_EXIT1 ("fallocate failed");
+    }
+
+  ret = fstat (temp_fd, &finfo);
+  if (ret == -1)
+    FAIL_EXIT1 ("fstat failed");
+
+  if (finfo.st_size < (offset + BLK_SIZE))
+    FAIL_EXIT1 ("size of first fallocate less than expected (%llu)",
+		(long long unsigned int)offset + BLK_SIZE);
+
+  if (lseek (temp_fd, offset, SEEK_SET) == (off_t) -1)
+    FAIL_EXIT1 ("fseek (0, SEEK_SET) failed");
+
+  if (write (temp_fd, bwrite, BLK_SIZE) != BLK_SIZE)
+    FAIL_EXIT1 ("fail trying to write " XSTR (BLK_SIZE) " bytes");
+
+  if (lseek (temp_fd, offset, SEEK_SET) == (off_t) -1)
+    FAIL_EXIT1 ("fseek (0, SEEK_SET) failed");
+
+  if (read (temp_fd, bread, BLK_SIZE) != BLK_SIZE)
+    FAIL_EXIT1 ("fail trying to read " XSTR (BLK_SIZE) " bytes");
+
+  if (memcmp (bwrite, bread, BLK_SIZE) != 0)
+    FAIL_EXIT1 ("buffer written different than buffer readed");
+
+  return 0;
+}
+
+/* This function is defined by the individual tests.  */
+static int do_test (void);
+
+#include <support/test-driver.c>