Adding upstream version 9.4.upstream/9.4upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 270 insertions, 0 deletions

diff --git a/gnulib-tests/test-lchown.h b/gnulib-tests/test-lchown.h
new file mode 100644
index 0000000..3f5d0bc
--- /dev/null
+++ b/gnulib-tests/test-lchown.h
@@ -0,0 +1,270 @@
+/* Tests of lchown.
+   Copyright (C) 2009-2023 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This program 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 General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Eric Blake <ebb9@byu.net>, 2009.  */
+
+#include "nap.h"
+
+#if !HAVE_GETGID
+# define getgid() ((gid_t) -1)
+#endif
+
+#if !HAVE_GETEGID
+# define getegid() ((gid_t) -1)
+#endif
+
+#ifndef HAVE_LCHMOD
+# define HAVE_LCHMOD 0
+#endif
+
+#ifndef CHOWN_CHANGE_TIME_BUG
+# define CHOWN_CHANGE_TIME_BUG 0
+#endif
+
+/* This file is designed to test lchown(n,o,g) and
+   chownat(AT_FDCWD,n,o,g,AT_SYMLINK_NOFOLLOW).  FUNC is the function
+   to test.  Assumes that BASE and ASSERT are already defined, and
+   that appropriate headers are already included.  If PRINT, warn
+   before skipping symlink tests with status 77.  */
+
+static int
+test_lchown (int (*func) (char const *, uid_t, gid_t), bool print)
+{
+  struct stat st1;
+  struct stat st2;
+  gid_t *gids = NULL;
+  int gids_count;
+  int result;
+
+  /* Solaris 8 is interesting - if the current process belongs to
+     multiple groups, the current directory is owned by a group that
+     the current process belongs to but different than getegid(), and
+     the current directory does not have the S_ISGID bit, then regular
+     files created in the directory belong to the directory's group,
+     but symlinks belong to the current effective group id.  If
+     S_ISGID is set, then both files and symlinks belong to the
+     directory's group.  However, it is possible to run the testsuite
+     from within a directory owned by a group we don't belong to, in
+     which case all things that we create belong to the current
+     effective gid.  So, work around the issues by creating a
+     subdirectory (we are guaranteed that the subdirectory will be
+     owned by one of our current groups), change ownership of that
+     directory to the current effective gid (which will thus succeed),
+     then create all other files within that directory (eliminating
+     questions on whether inheritance or current id triumphs, since
+     the two methods resolve to the same gid).  */
+  ASSERT (mkdir (BASE "dir", 0700) == 0);
+  ASSERT (stat (BASE "dir", &st1) == 0);
+
+  /* Filter out mingw and file systems which have no concept of groups.  */
+  result = func (BASE "dir", st1.st_uid, getegid ());
+  if (result == -1 && (errno == ENOSYS || errno == EPERM))
+    {
+      ASSERT (rmdir (BASE "dir") == 0);
+      if (print)
+        fputs ("skipping test: no support for ownership\n", stderr);
+      return 77;
+    }
+  ASSERT (result == 0);
+
+  ASSERT (close (creat (BASE "dir/file", 0600)) == 0);
+  ASSERT (stat (BASE "dir/file", &st1) == 0);
+  ASSERT (st1.st_uid != (uid_t) -1);
+  ASSERT (st1.st_gid != (gid_t) -1);
+  /* On macOS 12, when logged in through ssh, getgid () and getegid () are both
+     == (gid_t) -1.  */
+  if (getgid () != (gid_t) -1)
+    ASSERT (st1.st_gid == getegid ());
+
+  /* Sanity check of error cases.  */
+  errno = 0;
+  ASSERT (func ("", -1, -1) == -1);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (func ("no_such", -1, -1) == -1);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (func ("no_such/", -1, -1) == -1);
+  ASSERT (errno == ENOENT);
+  errno = 0;
+  ASSERT (func (BASE "dir/file/", -1, -1) == -1);
+  ASSERT (errno == ENOTDIR);
+
+  /* Check that -1 does not alter ownership.  */
+  ASSERT (func (BASE "dir/file", -1, st1.st_gid) == 0);
+  ASSERT (func (BASE "dir/file", st1.st_uid, -1) == 0);
+  ASSERT (func (BASE "dir/file", (uid_t) -1, (gid_t) -1) == 0);
+  ASSERT (stat (BASE "dir/file", &st2) == 0);
+  ASSERT (st1.st_uid == st2.st_uid);
+  ASSERT (st1.st_gid == st2.st_gid);
+
+  /* Even if the values aren't changing, ctime is required to change
+     if at least one argument is not -1.  */
+  nap ();
+  ASSERT (func (BASE "dir/file", st1.st_uid, st1.st_gid) == 0);
+  ASSERT (stat (BASE "dir/file", &st2) == 0);
+  ASSERT (st1.st_ctime < st2.st_ctime
+          || (st1.st_ctime == st2.st_ctime
+              && get_stat_ctime_ns (&st1) < get_stat_ctime_ns (&st2)));
+
+  /* Test symlink behavior.  */
+  if (symlink ("link", BASE "dir/link2"))
+    {
+      ASSERT (unlink (BASE "dir/file") == 0);
+      ASSERT (rmdir (BASE "dir") == 0);
+      if (print)
+        fputs ("skipping test: symlinks not supported on this file system\n",
+               stderr);
+      return 77;
+    }
+  result = func (BASE "dir/link2", -1, -1);
+  if (result == -1 && (errno == ENOSYS || errno == EOPNOTSUPP))
+    {
+      ASSERT (unlink (BASE "dir/file") == 0);
+      ASSERT (unlink (BASE "dir/link2") == 0);
+      ASSERT (rmdir (BASE "dir") == 0);
+      if (print)
+        fputs ("skipping test: symlink ownership not supported\n", stderr);
+      return 77;
+    }
+  ASSERT (result == 0);
+  errno = 0;
+  ASSERT (func (BASE "dir/link2/", st1.st_uid, st1.st_gid) == -1);
+  ASSERT (errno == ENOENT);
+  ASSERT (symlink ("file", BASE "dir/link") == 0);
+  ASSERT (mkdir (BASE "dir/sub", 0700) == 0);
+  ASSERT (symlink ("sub", BASE "dir/link3") == 0);
+
+  /* For non-privileged users, lchown can only portably succeed at
+     changing group ownership of a file we own.  If we belong to at
+     least two groups, then verifying the correct change is simple.
+     But if we belong to only one group, then we fall back on the
+     other observable effect of lchown: the ctime must be updated.  */
+  gids_count = mgetgroups (NULL, st1.st_gid, &gids);
+  if (1 < gids_count)
+    {
+      ASSERT (gids[1] != st1.st_gid);
+      if (getgid () != (gid_t) -1)
+        ASSERT (gids[1] != (gid_t) -1);
+      ASSERT (lstat (BASE "dir/link", &st2) == 0);
+      ASSERT (st1.st_uid == st2.st_uid);
+      ASSERT (st1.st_gid == st2.st_gid);
+      ASSERT (lstat (BASE "dir/link2", &st2) == 0);
+      ASSERT (st1.st_uid == st2.st_uid);
+      ASSERT (st1.st_gid == st2.st_gid);
+
+      errno = 0;
+      ASSERT (func (BASE "dir/link2/", -1, gids[1]) == -1);
+      ASSERT (errno == ENOTDIR);
+      ASSERT (stat (BASE "dir/file", &st2) == 0);
+      ASSERT (st1.st_uid == st2.st_uid);
+      ASSERT (st1.st_gid == st2.st_gid);
+      ASSERT (lstat (BASE "dir/link", &st2) == 0);
+      ASSERT (st1.st_uid == st2.st_uid);
+      ASSERT (st1.st_gid == st2.st_gid);
+      ASSERT (lstat (BASE "dir/link2", &st2) == 0);
+      ASSERT (st1.st_uid == st2.st_uid);
+      ASSERT (st1.st_gid == st2.st_gid);
+
+      ASSERT (func (BASE "dir/link2", -1, gids[1]) == 0);
+      ASSERT (stat (BASE "dir/file", &st2) == 0);
+      ASSERT (st1.st_uid == st2.st_uid);
+      ASSERT (st1.st_gid == st2.st_gid);
+      ASSERT (lstat (BASE "dir/link", &st2) == 0);
+      ASSERT (st1.st_uid == st2.st_uid);
+      ASSERT (st1.st_gid == st2.st_gid);
+      ASSERT (lstat (BASE "dir/link2", &st2) == 0);
+      ASSERT (st1.st_uid == st2.st_uid);
+      if (getgid () != (gid_t) -1)
+        ASSERT (gids[1] == st2.st_gid);
+
+      /* Trailing slash follows through to directory.  */
+      ASSERT (lstat (BASE "dir/link3", &st2) == 0);
+      ASSERT (st1.st_uid == st2.st_uid);
+      ASSERT (st1.st_gid == st2.st_gid);
+      ASSERT (lstat (BASE "dir/sub", &st2) == 0);
+      ASSERT (st1.st_uid == st2.st_uid);
+      ASSERT (st1.st_gid == st2.st_gid);
+
+      ASSERT (func (BASE "dir/link3/", -1, gids[1]) == 0);
+      ASSERT (lstat (BASE "dir/link3", &st2) == 0);
+      ASSERT (st1.st_uid == st2.st_uid);
+      ASSERT (st1.st_gid == st2.st_gid);
+      ASSERT (lstat (BASE "dir/sub", &st2) == 0);
+      ASSERT (st1.st_uid == st2.st_uid);
+      if (getgid () != (gid_t) -1)
+        ASSERT (gids[1] == st2.st_gid);
+    }
+  else if (!CHOWN_CHANGE_TIME_BUG || HAVE_LCHMOD)
+    {
+      /* If we don't have lchmod, and lchown fails to change ctime,
+         then we can't test this part of lchown.  */
+      struct stat l1;
+      struct stat l2;
+      ASSERT (stat (BASE "dir/file", &st1) == 0);
+      ASSERT (lstat (BASE "dir/link", &l1) == 0);
+      ASSERT (lstat (BASE "dir/link2", &l2) == 0);
+
+      nap ();
+      errno = 0;
+      ASSERT (func (BASE "dir/link2/", -1, st1.st_gid) == -1);
+      ASSERT (errno == ENOTDIR);
+      ASSERT (stat (BASE "dir/file", &st2) == 0);
+      ASSERT (st1.st_ctime == st2.st_ctime);
+      ASSERT (get_stat_ctime_ns (&st1) == get_stat_ctime_ns (&st2));
+      ASSERT (lstat (BASE "dir/link", &st2) == 0);
+      ASSERT (l1.st_ctime == st2.st_ctime);
+      ASSERT (get_stat_ctime_ns (&l1) == get_stat_ctime_ns (&st2));
+      ASSERT (lstat (BASE "dir/link2", &st2) == 0);
+      ASSERT (l2.st_ctime == st2.st_ctime);
+      ASSERT (get_stat_ctime_ns (&l2) == get_stat_ctime_ns (&st2));
+
+      ASSERT (func (BASE "dir/link2", -1, st1.st_gid) == 0);
+      ASSERT (stat (BASE "dir/file", &st2) == 0);
+      ASSERT (st1.st_ctime == st2.st_ctime);
+      ASSERT (get_stat_ctime_ns (&st1) == get_stat_ctime_ns (&st2));
+      ASSERT (lstat (BASE "dir/link", &st2) == 0);
+      ASSERT (l1.st_ctime == st2.st_ctime);
+      ASSERT (get_stat_ctime_ns (&l1) == get_stat_ctime_ns (&st2));
+      ASSERT (lstat (BASE "dir/link2", &st2) == 0);
+      ASSERT (l2.st_ctime < st2.st_ctime
+              || (l2.st_ctime == st2.st_ctime
+                  && get_stat_ctime_ns (&l2) < get_stat_ctime_ns (&st2)));
+
+      /* Trailing slash follows through to directory.  */
+      ASSERT (lstat (BASE "dir/sub", &st1) == 0);
+      ASSERT (lstat (BASE "dir/link3", &l1) == 0);
+      nap ();
+      ASSERT (func (BASE "dir/link3/", -1, st1.st_gid) == 0);
+      ASSERT (lstat (BASE "dir/link3", &st2) == 0);
+      ASSERT (l1.st_ctime == st2.st_ctime);
+      ASSERT (get_stat_ctime_ns (&l1) == get_stat_ctime_ns (&st2));
+      ASSERT (lstat (BASE "dir/sub", &st2) == 0);
+      ASSERT (st1.st_ctime < st2.st_ctime
+              || (st1.st_ctime == st2.st_ctime
+                  && get_stat_ctime_ns (&st1) < get_stat_ctime_ns (&st2)));
+    }
+
+  /* Cleanup.  */
+  free (gids);
+  ASSERT (unlink (BASE "dir/file") == 0);
+  ASSERT (unlink (BASE "dir/link") == 0);
+  ASSERT (unlink (BASE "dir/link2") == 0);
+  ASSERT (unlink (BASE "dir/link3") == 0);
+  ASSERT (rmdir (BASE "dir/sub") == 0);
+  ASSERT (rmdir (BASE "dir") == 0);
+  return 0;
+}