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, 122 insertions, 0 deletions

diff --git a/REORG.TODO/misc/tst-preadvwritev-common.c b/REORG.TODO/misc/tst-preadvwritev-common.c
new file mode 100644
index 0000000000..676d4953ac
--- /dev/null
+++ b/REORG.TODO/misc/tst-preadvwritev-common.c
@@ -0,0 +1,122 @@
+/* Common definitions for preadv and pwritev.
+   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 <stdio.h>
+#include <stdint.h>
+#include <errno.h>
+#include <string.h>
+#include <sys/uio.h>
+#include <sys/stat.h>
+
+#include <support/check.h>
+#include <support/temp_file.h>
+
+static char *temp_filename;
+static int temp_fd;
+
+static int do_test (void);
+
+static void
+do_prepare (int argc, char **argv)
+{
+  temp_fd = create_temp_file ("tst-preadvwritev.", &temp_filename);
+  if (temp_fd == -1)
+    FAIL_EXIT1 ("cannot create temporary file");
+}
+#define PREPARE do_prepare
+
+#ifndef PREADV
+# define PREADV(__fd, __iov, __iovcnt, __offset) \
+  preadv (__fd, __iov, __iovcnt, __offset)
+#endif
+
+#ifndef PWRITEV
+# define PWRITEV(__fd, __iov, __iovcnt, __offset) \
+  pwritev (__fd, __iov, __iovcnt, __offset)
+#endif
+
+static int
+do_test_with_offset (off_t offset)
+{
+  struct iovec iov[2];
+  ssize_t ret;
+
+  char buf1[32];
+  char buf2[64];
+
+  memset (buf1, 0xf0, sizeof buf1);
+  memset (buf2, 0x0f, sizeof buf2);
+
+  /* Write two buffer with 32 and 64 bytes respectively.  */
+  memset (iov, 0, sizeof iov);
+  iov[0].iov_base = buf1;
+  iov[0].iov_len = sizeof buf1;
+  iov[1].iov_base = buf2;
+  iov[1].iov_len = sizeof buf2;
+
+  ret = PWRITEV (temp_fd, iov, 2, offset);
+  if (ret == -1)
+    FAIL_RET ("first pwritev returned -1");
+  if (ret != (sizeof buf1 + sizeof buf2))
+    FAIL_RET ("first pwritev returned an unexpected value");
+
+  ret = PWRITEV (temp_fd, iov, 2, sizeof buf1 + sizeof buf2 + offset);
+  if (ret == -1)
+    FAIL_RET ("second pwritev returned -1");
+  if (ret != (sizeof buf1 + sizeof buf2))
+    FAIL_RET ("second pwritev returned an unexpected value");
+
+  char buf3[32];
+  char buf4[64];
+
+  memset (buf3, 0x0f, sizeof buf3);
+  memset (buf4, 0xf0, sizeof buf4);
+
+  iov[0].iov_base = buf3;
+  iov[0].iov_len = sizeof buf3;
+  iov[1].iov_base = buf4;
+  iov[1].iov_len = sizeof buf4;
+
+  /* Now read two buffer with 32 and 64 bytes respectively.  */
+  ret = PREADV (temp_fd, iov, 2, offset);
+  if (ret == -1)
+    FAIL_RET ("first preadv returned -1");
+  if (ret != (sizeof buf3 + sizeof buf4))
+    FAIL_RET ("first preadv returned an unexpected value");
+
+  if (memcmp (buf1, buf3, sizeof buf1) != 0)
+    FAIL_RET ("first buffer from first preadv different than expected");
+  if (memcmp (buf2, buf4, sizeof buf2) != 0)
+    FAIL_RET ("second buffer from first preadv different than expected");
+
+  ret = PREADV (temp_fd, iov, 2, sizeof buf3 + sizeof buf4 + offset);
+  if (ret == -1)
+    FAIL_RET ("second preadv returned -1");
+  if (ret != (sizeof buf3 + sizeof buf4))
+    FAIL_RET ("second preadv returned an unexpected value");
+
+  /* And compare the buffers read and written to check if there are equal.  */
+  if (memcmp (buf1, buf3, sizeof buf1) != 0)
+    FAIL_RET ("first buffer from second preadv different than expected");
+  if (memcmp (buf2, buf4, sizeof buf2) != 0)
+    FAIL_RET ("second buffer from second preadv different than expected");
+
+  return 0;
+}
+
+#include <support/test-driver.c>