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, 201 insertions, 0 deletions

diff --git a/REORG.TODO/timezone/tst-tzset.c b/REORG.TODO/timezone/tst-tzset.c
new file mode 100644
index 0000000000..05a6139ec2
--- /dev/null
+++ b/REORG.TODO/timezone/tst-tzset.c
@@ -0,0 +1,201 @@
+/* tzset tests with crafted time zone data.
+   Copyright (C) 2015-2017 Free Software Foundation, Inc.
+
+   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/>.  */
+
+#define _GNU_SOURCE 1
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/resource.h>
+#include <time.h>
+#include <unistd.h>
+
+#define TIMEOUT 5
+static int do_test (void);
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"
+
+/* Returns the name of a large TZ file.  */
+static char *
+create_tz_file (off64_t size)
+{
+  char *path;
+  int fd = create_temp_file ("tst-tzset-", &path);
+  if (fd < 0)
+    exit (1);
+
+  // Reopen for large-file support.
+  close (fd);
+  fd = open64 (path, O_WRONLY);
+  if (fd < 0)
+    {
+      printf ("open64 (%s) failed: %m\n", path);
+      exit (1);
+    }
+
+  static const char data[] = {
+    0x54, 0x5a, 0x69, 0x66, 0x32, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
+    0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
+    0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x58, 0x54, 0x47, 0x00, 0x00, 0x00,
+    0x54, 0x5a, 0x69, 0x66, 0x32, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01,
+    0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01,
+    0x00, 0x00, 0x00, 0x04, 0xf8, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+    0x00, 0x00, 0x00, 0x58, 0x54, 0x47, 0x00, 0x00,
+    0x00, 0x0a, 0x58, 0x54, 0x47, 0x30, 0x0a
+  };
+  ssize_t ret = write (fd, data, sizeof (data));
+  if (ret < 0)
+    {
+      printf ("write failed: %m\n");
+      exit (1);
+    }
+  if ((size_t) ret != sizeof (data))
+    {
+      printf ("Short write\n");
+      exit (1);
+    }
+  if (lseek64 (fd, size, SEEK_CUR) < 0)
+    {
+      printf ("lseek failed: %m\n");
+      close (fd);
+      return NULL;
+    }
+  if (write (fd, "", 1) != 1)
+    {
+      printf ("Single-byte write failed\n");
+      close (fd);
+      return NULL;
+    }
+  if (close (fd) != 0)
+    {
+      printf ("close failed: %m\n");
+      exit (1);
+    }
+  return path;
+}
+
+static void
+test_tz_file (off64_t size)
+{
+  char *path = create_tz_file (size);
+  if (setenv ("TZ", path, 1) < 0)
+    {
+      printf ("setenv failed: %m\n");
+      exit (1);
+    }
+  tzset ();
+  free (path);
+}
+
+static int
+do_test (void)
+{
+  /* Limit the size of the process.  Otherwise, some of the tests will
+     consume a lot of resources.  */
+  {
+    struct rlimit limit;
+    if (getrlimit (RLIMIT_AS, &limit) != 0)
+      {
+	printf ("getrlimit (RLIMIT_AS) failed: %m\n");
+	return 1;
+      }
+    long target = 512 * 1024 * 1024;
+    if (limit.rlim_cur == RLIM_INFINITY || limit.rlim_cur > target)
+      {
+	limit.rlim_cur = 512 * 1024 * 1024;
+	if (setrlimit (RLIMIT_AS, &limit) != 0)
+	  {
+	    printf ("setrlimit (RLIMIT_AS) failed: %m\n");
+	    return 1;
+	  }
+      }
+  }
+
+  int errors = 0;
+  for (int i = 1; i <= 4; ++i)
+    {
+      char tz[16];
+      snprintf (tz, sizeof (tz), "XT%d", i);
+      if (setenv ("TZ", tz, 1) < 0)
+	{
+	  printf ("setenv failed: %m\n");
+	  return 1;
+	}
+      tzset ();
+      if (strcmp (tzname[0], tz) == 0)
+	{
+	  printf ("Unexpected success for %s\n", tz);
+	  ++errors;
+	}
+    }
+
+  /* Large TZ files.  */
+
+  /* This will succeed on 64-bit architectures, and fail on 32-bit
+     architectures.  It used to crash on 32-bit.  */
+  test_tz_file (64 * 1024 * 1024);
+
+  /* This will fail on 64-bit and 32-bit architectures.  It used to
+     cause a test timeout on 64-bit and crash on 32-bit if the TZ file
+     open succeeded for some reason (it does not use O_LARGEFILE in
+     regular builds).  */
+  test_tz_file (4LL * 1024 * 1024 * 1024 - 6);
+
+  /* Large TZ variables.  */
+  {
+    size_t length = 64 * 1024 * 1024;
+    char *value = malloc (length + 1);
+    if (value == NULL)
+      {
+	puts ("malloc failed: %m");
+	return 1;
+      }
+    value[length] = '\0';
+
+    memset (value, ' ', length);
+    value[0] = 'U';
+    value[1] = 'T';
+    value[2] = 'C';
+    if (setenv ("TZ", value, 1) < 0)
+      {
+	printf ("setenv failed: %m\n");
+	return 1;
+      }
+    tzset ();
+
+    memset (value, '0', length);
+    value[0] = '<';
+    value[length - 1] = '>';
+    if (setenv ("TZ", value, 1) < 0)
+      {
+	printf ("setenv failed: %m\n");
+	return 1;
+      }
+    tzset ();
+  }
+
+  return errors > 0;
+}