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, 582 insertions, 0 deletions

diff --git a/REORG.TODO/posix/tst-dir.c b/REORG.TODO/posix/tst-dir.c
new file mode 100644
index 0000000000..fee79b32a0
--- /dev/null
+++ b/REORG.TODO/posix/tst-dir.c
@@ -0,0 +1,582 @@
+/* Copyright (C) 2000-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@redhat.com>, 2000.
+
+   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 <dirent.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <mcheck.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <libc-diag.h>
+
+/* We expect four arguments:
+   - source directory name
+   - object directory
+   - common object directory
+   - the program name with path
+*/
+int
+main (int argc, char *argv[])
+{
+  const char *srcdir;
+  const char *objdir;
+  const char *common_objdir;
+  const char *progpath;
+  struct stat64 st1;
+  struct stat64 st2;
+  struct stat64 st3;
+  DIR *dir1;
+  DIR *dir2;
+  int result = 0;
+  struct dirent64 *d;
+  union
+    {
+      struct dirent64 d;
+      char room [offsetof (struct dirent64, d_name[0]) + NAME_MAX + 1];
+    }
+    direntbuf;
+  char *objdir_copy1;
+  char *objdir_copy2;
+  char *buf;
+  int fd;
+
+  mtrace ();
+
+  if (argc < 5)
+    {
+      puts ("not enough parameters");
+      exit (1);
+    }
+
+  /* Make parameters available with nicer names.  */
+  srcdir = argv[1];
+  objdir = argv[2];
+  common_objdir = argv[3];
+  progpath = argv[4];
+
+  /* First test the current source dir.  We cannot really compare the
+     result of `getpwd' with the srcdir string but we have other means.  */
+  if (stat64 (".", &st1) < 0)
+    {
+      printf ("cannot stat starting directory: %m\n");
+      exit (1);
+    }
+
+  if (chdir (srcdir) < 0)
+    {
+      printf ("cannot change to source directory: %m\n");
+      exit (1);
+    }
+  if (stat64 (".", &st2) < 0)
+    {
+      printf ("cannot stat source directory: %m\n");
+      exit (1);
+    }
+
+  /* The two last stat64 calls better were for the same directory.  */
+  if (st1.st_dev != st2.st_dev || st1.st_ino != st2.st_ino)
+    {
+      printf ("stat of source directory failed: (%lld,%lld) vs (%lld,%lld)\n",
+	      (long long int) st1.st_dev, (long long int) st1.st_ino,
+	      (long long int) st2.st_dev, (long long int) st2.st_ino);
+      exit (1);
+    }
+
+  /* Change to the object directory.  */
+  if (chdir (objdir) < 0)
+    {
+      printf ("cannot change to object directory: %m\n");
+      exit (1);
+    }
+  if (stat64 (".", &st1) < 0)
+    {
+      printf ("cannot stat object directory: %m\n");
+      exit (1);
+    }
+  /* Is this the same we get as with the full path?  */
+  if (stat64 (objdir, &st2) < 0)
+    {
+      printf ("cannot stat object directory with full path: %m\n");
+      exit (1);
+    }
+  if (st1.st_dev != st2.st_dev || st1.st_ino != st2.st_ino)
+    {
+      printf ("stat of object directory failed: (%lld,%lld) vs (%lld,%lld)\n",
+	      (long long int) st1.st_dev, (long long int) st1.st_ino,
+	      (long long int) st2.st_dev, (long long int) st2.st_ino);
+      exit (1);
+    }
+
+  objdir_copy1 = getcwd (NULL, 0);
+  if (objdir_copy1 == NULL)
+    {
+      printf ("cannot get current directory name for object directory: %m\n");
+      result = 1;
+    }
+
+  /* First test: this directory must include our program.  */
+  if (stat64 (progpath, &st2) < 0)
+    {
+      printf ("cannot stat program: %m\n");
+      exit (1);
+    }
+
+  dir1 = opendir (".");
+  if (dir1 == NULL)
+    {
+      printf ("cannot open object directory: %m\n");
+      exit (1);
+    }
+
+  while ((d = readdir64 (dir1)) != NULL)
+    {
+#ifdef _DIRENT_HAVE_D_TYPE
+      if (d->d_type != DT_UNKNOWN && d->d_type != DT_REG)
+	continue;
+#endif
+
+      if (d->d_ino == st2.st_ino)
+	{
+	  /* Might be it.  Test the device.  We could use the st_dev
+	     element from st1 but what the heck, do more testing.  */
+	  if (stat64 (d->d_name, &st3) < 0)
+	    {
+	      printf ("cannot stat entry from readdir: %m\n");
+	      result = 1;
+	      d = NULL;
+	      break;
+	    }
+
+	  if (st3.st_dev == st2.st_dev)
+	    break;
+	}
+    }
+
+  if (d == NULL)
+    {
+      puts ("haven't found program in object directory");
+      result = 1;
+    }
+
+  /* We leave dir1 open.  */
+
+  /* Stat using file descriptor.  */
+  if (fstat64 (dirfd (dir1), &st2) < 0)
+    {
+      printf ("cannot fstat object directory: %m\n");
+      result = 1;
+    }
+  if (st1.st_dev != st2.st_dev || st1.st_ino != st2.st_ino)
+    {
+      printf ("fstat of object directory failed: (%lld,%lld) vs (%lld,%lld)\n",
+	      (long long int) st1.st_dev, (long long int) st1.st_ino,
+	      (long long int) st2.st_dev, (long long int) st2.st_ino);
+      exit (1);
+    }
+
+  if (chdir ("..") < 0)
+    {
+      printf ("cannot go to common object directory with \"..\": %m\n");
+      exit (1);
+    }
+
+  if (stat64 (".", &st1) < 0)
+    {
+      printf ("cannot stat common object directory: %m\n");
+      exit (1);
+    }
+  /* Is this the same we get as with the full path?  */
+  if (stat64 (common_objdir, &st2) < 0)
+    {
+      printf ("cannot stat common object directory with full path: %m\n");
+      exit (1);
+    }
+  if (st1.st_dev != st2.st_dev || st1.st_ino != st2.st_ino)
+    {
+      printf ("stat of object directory failed: (%lld,%lld) vs (%lld,%lld)\n",
+	      (long long int) st1.st_dev, (long long int) st1.st_ino,
+	      (long long int) st2.st_dev, (long long int) st2.st_ino);
+      exit (1);
+    }
+
+  /* Stat using file descriptor.  */
+  if (fstat64 (dirfd (dir1), &st2) < 0)
+    {
+      printf ("cannot fstat object directory: %m\n");
+      result = 1;
+    }
+
+  dir2 = opendir (common_objdir);
+  if (dir2 == NULL)
+    {
+      printf ("cannot open common object directory: %m\n");
+      exit (1);
+    }
+
+  while ((d = readdir64 (dir2)) != NULL)
+    {
+#ifdef _DIRENT_HAVE_D_TYPE
+      if (d->d_type != DT_UNKNOWN && d->d_type != DT_DIR)
+	continue;
+#endif
+
+      if (d->d_ino == st2.st_ino)
+	{
+	  /* Might be it.  Test the device.  We could use the st_dev
+	     element from st1 but what the heck, do more testing.  */
+	  if (stat64 (d->d_name, &st3) < 0)
+	    {
+	      printf ("cannot stat entry from readdir: %m\n");
+	      result = 1;
+	      d = NULL;
+	      break;
+	    }
+
+	  if (st3.st_dev == st2.st_dev)
+	    break;
+	}
+    }
+
+  /* This better should be the object directory again.  */
+  if (fchdir (dirfd (dir1)) < 0)
+    {
+      printf ("cannot fchdir to object directory: %m\n");
+      exit (1);
+    }
+
+  objdir_copy2 = getcwd (NULL, 0);
+  if (objdir_copy2 == NULL)
+    {
+      printf ("cannot get current directory name for object directory: %m\n");
+      result = 1;
+    }
+  if (strcmp (objdir_copy1, objdir_copy2) != 0)
+    {
+      puts ("getcwd returned a different string the second time");
+      result = 1;
+    }
+
+  /* This better should be the common object directory again.  */
+  if (fchdir (dirfd (dir2)) < 0)
+    {
+      printf ("cannot fchdir to common object directory: %m\n");
+      exit (1);
+    }
+
+  if (stat64 (".", &st2) < 0)
+    {
+      printf ("cannot stat common object directory: %m\n");
+      exit (1);
+    }
+  if (st1.st_dev != st2.st_dev || st1.st_ino != st2.st_ino)
+    {
+      printf ("stat of object directory failed: (%lld,%lld) vs (%lld,%lld)\n",
+	      (long long int) st1.st_dev, (long long int) st1.st_ino,
+	      (long long int) st2.st_dev, (long long int) st2.st_ino);
+      exit (1);
+    }
+
+  buf = (char *) malloc (strlen (objdir_copy1) + 1 + sizeof "tst-dir.XXXXXX");
+  if (buf == NULL)
+    {
+      printf ("cannot allocate buffer: %m");
+      exit (1);
+    }
+
+  stpcpy (stpcpy (stpcpy (buf, objdir_copy1), "/"), "tst-dir.XXXXXX");
+  if (mkdtemp (buf) == NULL)
+    {
+      printf ("cannot create test directory in object directory: %m\n");
+      exit (1);
+    }
+  if (stat64 (buf, &st1) < 0)
+    {
+      printf ("cannot stat new directory \"%s\": %m\n", buf);
+      exit (1);
+    }
+  if (chmod (buf, 0700) < 0)
+    {
+      printf ("cannot change mode of new directory: %m\n");
+      exit (1);
+    }
+
+  /* The test below covers the deprecated readdir64_r function.  */
+  DIAG_PUSH_NEEDS_COMMENT;
+  DIAG_IGNORE_NEEDS_COMMENT (4.9, "-Wdeprecated-declarations");
+
+  /* Try to find the new directory.  */
+  rewinddir (dir1);
+  while (readdir64_r (dir1, &direntbuf.d, &d) == 0 && d != NULL)
+    {
+#ifdef _DIRENT_HAVE_D_TYPE
+      if (d->d_type != DT_UNKNOWN && d->d_type != DT_DIR)
+	continue;
+#endif
+
+      if (d->d_ino == st1.st_ino)
+	{
+	  /* Might be it.  Test the device.  We could use the st_dev
+	     element from st1 but what the heck, do more testing.  */
+	  size_t len = strlen (objdir) + 1 + _D_EXACT_NAMLEN (d) + 1;
+	  char tmpbuf[len];
+
+	  stpcpy (stpcpy (stpcpy (tmpbuf, objdir), "/"), d->d_name);
+
+	  if (stat64 (tmpbuf, &st3) < 0)
+	    {
+	      printf ("cannot stat entry from readdir: %m\n");
+	      result = 1;
+	      d = NULL;
+	      break;
+	    }
+
+	  if (st3.st_dev == st2.st_dev
+	      && strcmp (d->d_name, buf + strlen (buf) - 14) == 0)
+	    break;
+	}
+    }
+
+  DIAG_POP_NEEDS_COMMENT;
+
+  if (d == NULL)
+    {
+      printf ("haven't found new directory \"%s\"\n", buf);
+      exit (1);
+    }
+
+  if (closedir (dir2) < 0)
+    {
+      printf ("closing dir2 failed: %m\n");
+      result = 1;
+    }
+
+  if (chdir (buf) < 0)
+    {
+      printf ("cannot change to new directory: %m\n");
+      exit (1);
+    }
+
+  dir2 = opendir (buf);
+  if (dir2 == NULL)
+    {
+      printf ("cannot open new directory: %m\n");
+      exit (1);
+    }
+
+  if (fstat64 (dirfd (dir2), &st2) < 0)
+    {
+      printf ("cannot fstat new directory \"%s\": %m\n", buf);
+      exit (1);
+    }
+  if (st1.st_dev != st2.st_dev || st1.st_ino != st2.st_ino)
+    {
+      printf ("stat of new directory failed: (%lld,%lld) vs (%lld,%lld)\n",
+	      (long long int) st1.st_dev, (long long int) st1.st_ino,
+	      (long long int) st2.st_dev, (long long int) st2.st_ino);
+      exit (1);
+    }
+
+  if (mkdir ("another-dir", 0777) < 0)
+    {
+      printf ("cannot create \"another-dir\": %m\n");
+      exit (1);
+    }
+  fd = open ("and-a-file", O_RDWR | O_CREAT | O_EXCL, 0666);
+  if (fd == -1)
+    {
+      printf ("cannot create \"and-a-file\": %m\n");
+      exit (1);
+    }
+  close (fd);
+
+  /* Some tests about error reporting.  */
+  errno = 0;
+  if (chdir ("and-a-file") >= 0)
+    {
+      printf ("chdir to \"and-a-file\" succeeded\n");
+      exit (1);
+    }
+  if (errno != ENOTDIR)
+    {
+      printf ("chdir to \"and-a-file\" didn't set correct error\n");
+      result = 1;
+    }
+
+  errno = 0;
+  if (chdir ("and-a-file/..") >= 0)
+    {
+      printf ("chdir to \"and-a-file/..\" succeeded\n");
+      exit (1);
+    }
+  if (errno != ENOTDIR)
+    {
+      printf ("chdir to \"and-a-file/..\" didn't set correct error\n");
+      result = 1;
+    }
+
+  errno = 0;
+  if (chdir ("another-dir/../and-a-file") >= 0)
+    {
+      printf ("chdir to \"another-dir/../and-a-file\" succeeded\n");
+      exit (1);
+    }
+  if (errno != ENOTDIR)
+    {
+      printf ("chdir to \"another-dir/../and-a-file\" didn't set correct error\n");
+      result = 1;
+    }
+
+  /* The test below covers the deprecated readdir64_r function.  */
+  DIAG_PUSH_NEEDS_COMMENT;
+  DIAG_IGNORE_NEEDS_COMMENT (4.9, "-Wdeprecated-declarations");
+
+  /* We now should have a directory and a file in the new directory.  */
+  rewinddir (dir2);
+  while (readdir64_r (dir2, &direntbuf.d, &d) == 0 && d != NULL)
+    {
+      if (strcmp (d->d_name, ".") == 0
+	  || strcmp (d->d_name, "..") == 0
+	  || strcmp (d->d_name, "another-dir") == 0)
+	{
+#ifdef _DIRENT_HAVE_D_TYPE
+	  if (d->d_type != DT_UNKNOWN && d->d_type != DT_DIR)
+	    {
+	      printf ("d_type for \"%s\" is wrong\n", d->d_name);
+	      result = 1;
+	    }
+#endif
+	  if (stat64 (d->d_name, &st3) < 0)
+	    {
+	      printf ("cannot stat \"%s\" is wrong\n", d->d_name);
+	      result = 1;
+	    }
+	  else if (! S_ISDIR (st3.st_mode))
+	    {
+	      printf ("\"%s\" is no directory\n", d->d_name);
+	      result = 1;
+	    }
+	}
+      else if (strcmp (d->d_name, "and-a-file") == 0)
+	{
+#ifdef _DIRENT_HAVE_D_TYPE
+	  if (d->d_type != DT_UNKNOWN && d->d_type != DT_REG)
+	    {
+	      printf ("d_type for \"%s\" is wrong\n", d->d_name);
+	      result = 1;
+	    }
+#endif
+	  if (stat64 (d->d_name, &st3) < 0)
+	    {
+	      printf ("cannot stat \"%s\" is wrong\n", d->d_name);
+	      result = 1;
+	    }
+	  else if (! S_ISREG (st3.st_mode))
+	    {
+	      printf ("\"%s\" is no regular file\n", d->d_name);
+	      result = 1;
+	    }
+	}
+      else
+	{
+	  printf ("unexpected directory entry \"%s\"\n", d->d_name);
+	  result = 1;
+	}
+    }
+
+  DIAG_POP_NEEDS_COMMENT;
+
+  if (stat64 ("does-not-exist", &st1) >= 0)
+    {
+      puts ("stat for unexisting file did not fail");
+      result = 1;
+    }
+
+  /* Free all resources.  */
+
+  if (closedir (dir1) < 0)
+    {
+      printf ("closing dir1 failed: %m\n");
+      result = 1;
+    }
+  if (closedir (dir2) < 0)
+    {
+      printf ("second closing dir2 failed: %m\n");
+      result = 1;
+    }
+
+  if (rmdir ("another-dir") < 0)
+    {
+      printf ("cannot remove \"another-dir\": %m\n");
+      result = 1;
+    }
+
+  if (unlink ("and-a-file") < 0)
+    {
+      printf ("cannot remove \"and-a-file\": %m\n");
+      result = 1;
+    }
+
+  /* One more test before we leave: mkdir() is supposed to fail with
+     EEXIST if the named file is a symlink.  */
+  if (symlink ("a-symlink", "a-symlink") != 0)
+    {
+      printf ("cannot create symlink \"a-symlink\": %m\n");
+      result = 1;
+    }
+  else
+    {
+      if (mkdir ("a-symlink", 0666) == 0)
+	{
+	  puts ("can make directory \"a-symlink\"");
+	  result = 1;
+	}
+      else if (errno != EEXIST)
+	{
+	  puts ("mkdir(\"a-symlink\") does not fail with EEXIST\n");
+	  result = 1;
+	}
+      if (unlink ("a-symlink") < 0)
+	{
+	  printf ("cannot unlink \"a-symlink\": %m\n");
+	  result = 1;
+	}
+    }
+
+  if (chdir (srcdir) < 0)
+    {
+      printf ("cannot change back to source directory: %m\n");
+      exit (1);
+    }
+
+  if (rmdir (buf) < 0)
+    {
+      printf ("cannot remove \"%s\": %m\n", buf);
+      result = 1;
+    }
+  free (objdir_copy1);
+  free (objdir_copy2);
+
+  if (result == 0)
+    puts ("all OK");
+
+  return result;
+}