Issue #4761: Add the *at() family of functions (openat(), etc.) to the posix

module.  Patch by Ross Lagerwall.

Doc/library/os.rst

@@ -606,6 +606,21 @@ associated with a :term:`file object` when required.  Note that using the file
 descriptor directly will bypass the file object methods, ignoring aspects such
 as internal buffering of data.
 
+.. data:: AT_SYMLINK_NOFOLLOW
+          AT_EACCESS
+          AT_FDCWD
+          AT_REMOVEDIR
+          AT_SYMLINK_FOLLOW
+          UTIME_NOW
+          UTIME_OMIT
+
+   These parameters are used as flags to the \*at family of functions.
+
+   Availability: Unix.
+
+   .. versionadded:: 3.3
+
+
 .. function:: close(fd)
 
    Close file descriptor *fd*.
@@ -654,6 +669,19 @@ as internal buffering of data.
    Availability: Unix, Windows.
 
 
+.. function:: faccessat(dirfd, path, mode, flags=0)
+
+   Like :func:`access` but if *path* is relative, it is taken as relative to *dirfd*.
+   *flags* is optional and can be constructed by ORing together zero or more
+   of these values: :data:`AT_SYMLINK_NOFOLLOW`, :data:`AT_EACCESS`.
+   If *path* is relative and *dirfd* is the special value :data:`AT_FDCWD`, then *path*
+   is interpreted relative to the current working directory.
+
+   Availability: Unix.
+
+   .. versionadded:: 3.3
+
+
 .. function:: fchmod(fd, mode)
 
    Change the mode of the file given by *fd* to the numeric *mode*.  See the docs
@@ -662,6 +690,18 @@ as internal buffering of data.
    Availability: Unix.
 
 
+.. function:: fchmodat(dirfd, path, mode, flags=0)
+
+   Like :func:`chmod` but if *path* is relative, it is taken as relative to *dirfd*.
+   *flags* is optional and may be 0 or :data:`AT_SYMLINK_NOFOLLOW`.
+   If *path* is relative and *dirfd* is the special value :data:`AT_FDCWD`, then *path*
+   is interpreted relative to the current working directory.
+
+   Availability: Unix.
+
+   .. versionadded:: 3.3
+
+
 .. function:: fchown(fd, uid, gid)
 
    Change the owner and group id of the file given by *fd* to the numeric *uid*
@@ -670,6 +710,18 @@ as internal buffering of data.
    Availability: Unix.
 
 
+.. function:: fchownat(dirfd, path, uid, gid, flags=0)
+
+   Like :func:`chown` but if *path* is relative, it is taken as relative to *dirfd*.
+   *flags* is optional and may be 0 or :data:`AT_SYMLINK_NOFOLLOW`.
+   If *path* is relative and *dirfd* is the special value :data:`AT_FDCWD`, then *path*
+   is interpreted relative to the current working directory.
+
+   Availability: Unix.
+
+   .. versionadded:: 3.3
+
+
 .. function:: fdatasync(fd)
 
    Force write of file with filedescriptor *fd* to disk. Does not force update of
@@ -705,6 +757,17 @@ as internal buffering of data.
 
    Availability: Unix, Windows.
 
+.. function:: fstatat(dirfd, path, flags=0)
+
+   Like :func:`stat` but if *path* is relative, it is taken as relative to *dirfd*.
+   *flags* is optional and may be 0 or :data:`AT_SYMLINK_NOFOLLOW`.
+   If *path* is relative and *dirfd* is the special value :data:`AT_FDCWD`, then *path*
+   is interpreted relative to the current working directory.
+
+   Availability: Unix.
+
+   .. versionadded:: 3.3
+
 
 .. function:: fstatvfs(fd)
 
@@ -734,6 +797,18 @@ as internal buffering of data.
    Availability: Unix.
 
 
+.. function:: futimesat(dirfd, path, (atime, mtime))
+              futimesat(dirfd, path, None)
+
+   Like :func:`utime` but if *path* is relative, it is taken as relative to *dirfd*.
+   If *path* is relative and *dirfd* is the special value :data:`AT_FDCWD`, then *path*
+   is interpreted relative to the current working directory.
+
+   Availability: Unix.
+
+   .. versionadded:: 3.3
+
+
 .. function:: isatty(fd)
 
    Return ``True`` if the file descriptor *fd* is open and connected to a
@@ -742,6 +817,20 @@ as internal buffering of data.
    Availability: Unix.
 
 
+.. function:: linkat(srcfd, srcpath, dstfd, dstpath, flags=0)
+
+   Like :func:`link` but if *srcpath* is relative, it is taken as relative to *srcfd*
+   and if *dstpath* is relative, it is taken as relative to *dstfd*.
+   *flags* is optional and may be 0 or :data:`AT_SYMLINK_FOLLOW`.
+   If *srcpath* is relative and *srcfd* is the special value :data:`AT_FDCWD`, then
+   *srcpath* is interpreted relative to the current working directory. This
+   also applies for *dstpath*.
+
+   Availability: Unix.
+
+   .. versionadded:: 3.3
+
+
 .. function:: lseek(fd, pos, how)
 
    Set the current position of file descriptor *fd* to position *pos*, modified
@@ -761,6 +850,39 @@ as internal buffering of data.
    respectively. Availability: Windows, Unix.
 
 
+.. function:: mkdirat(dirfd, path, mode=0o777)
+
+   Like :func:`mkdir` but if *path* is relative, it is taken as relative to *dirfd*.
+   If *path* is relative and *dirfd* is the special value :data:`AT_FDCWD`, then *path*
+   is interpreted relative to the current working directory.
+
+   Availability: Unix.
+
+   .. versionadded:: 3.3
+
+
+.. function:: mkfifoat(dirfd, path, mode=0o666)
+
+   Like :func:`mkfifo` but if *path* is relative, it is taken as relative to *dirfd*.
+   If *path* is relative and *dirfd* is the special value :data:`AT_FDCWD`, then *path*
+   is interpreted relative to the current working directory.
+
+   Availability: Unix.
+
+   .. versionadded:: 3.3
+
+
+.. function:: mknodat(dirfd, path, mode=0o600, device=0)
+
+   Like :func:`mknod` but if *path* is relative, it is taken as relative to *dirfd*.
+   If *path* is relative and *dirfd* is the special value :data:`AT_FDCWD`, then *path*
+   is interpreted relative to the current working directory.
+
+   Availability: Unix.
+
+   .. versionadded:: 3.3
+
+
 .. function:: open(file, flags[, mode])
 
    Open the file *file* and set various flags according to *flags* and possibly
@@ -783,6 +905,17 @@ as internal buffering of data.
       wrap a file descriptor in a file object, use :func:`fdopen`.
 
 
+.. function:: openat(dirfd, path, flags, mode=0o777)
+
+   Like :func:`open` but if *path* is relative, it is taken as relative to *dirfd*.
+   If *path* is relative and *dirfd* is the special value :data:`AT_FDCWD`, then *path*
+   is interpreted relative to the current working directory.
+
+   Availability: Unix.
+
+   .. versionadded:: 3.3
+
+
 .. function:: openpty()
 
    .. index:: module: pty
@@ -860,6 +993,41 @@ as internal buffering of data.
    .. versionadded:: 3.3
 
 
+.. function:: readlinkat(dirfd, path)
+
+   Like :func:`readlink` but if *path* is relative, it is taken as relative to *dirfd*.
+   If *path* is relative and *dirfd* is the special value :data:`AT_FDCWD`, then *path*
+   is interpreted relative to the current working directory.
+
+   Availability: Unix.
+
+   .. versionadded:: 3.3
+
+
+.. function:: renameat(olddirfd, oldpath, newdirfd, newpath)
+
+   Like :func:`rename` but if *oldpath* is relative, it is taken as relative to
+   *olddirfd* and if *newpath* is relative, it is taken as relative to *newdirfd*.
+   If *oldpath* is relative and *olddirfd* is the special value :data:`AT_FDCWD`, then
+   *oldpath* is interpreted relative to the current working directory. This
+   also applies for *newpath*.
+
+   Availability: Unix.
+
+   .. versionadded:: 3.3
+
+
+.. function:: symlinkat(src, dstfd, dst)
+
+   Like :func:`symlink` but if *dst* is relative, it is taken as relative to *dstfd*.
+   If *dst* is relative and *dstfd* is the special value :data:`AT_FDCWD`, then *dst*
+   is interpreted relative to the current working directory.
+
+   Availability: Unix.
+
+   .. versionadded:: 3.3
+
+
 .. function:: tcgetpgrp(fd)
 
    Return the process group associated with the terminal given by *fd* (an open
@@ -885,6 +1053,38 @@ as internal buffering of data.
    Availability: Unix.
 
 
+.. function:: unlinkat(dirfd, path, flags=0)
+
+   Like :func:`unlink` but if *path* is relative, it is taken as relative to *dirfd*.
+   *flags* is optional and may be 0 or :data:`AT_REMOVEDIR`. If :data:`AT_REMOVEDIR` is
+   specified, :func:`unlinkat` behaves like :func:`rmdir`.
+   If *path* is relative and *dirfd* is the special value :data:`AT_FDCWD`, then *path*
+   is interpreted relative to the current working directory.
+
+   Availability: Unix.
+
+   .. versionadded:: 3.3
+
+
+.. function:: utimensat(dirfd, path, (atime_sec, atime_nsec), (mtime_sec, mtime_nsec), flags)
+              utimensat(dirfd, path, None, None, flags)
+
+   Updates the timestamps of a file with nanosecond precision.
+   The second form sets *atime* and *mtime* to the current time.
+   If *atime_nsec* or *mtime_nsec* is specified as :data:`UTIME_NOW`, the corresponding
+   timestamp is updated to the current time.
+   If *atime_nsec* or *mtime_nsec* is specified as :data:`UTIME_OMIT`, the corresponding
+   timestamp is not updated.
+   If *path* is relative, it is taken as relative to *dirfd*.
+   *flags* is optional and may be 0 or :data:`AT_SYMLINK_NOFOLLOW`.
+   If *path* is relative and *dirfd* is the special value :data:`AT_FDCWD`, then *path*
+   is interpreted relative to the current working directory.
+
+   Availability: Unix.
+
+   .. versionadded:: 3.3
+
+
 .. function:: write(fd, str)
 
    Write the bytestring in *str* to file descriptor *fd*. Return the number of

Lib/test/test_posix.py

@@ -389,6 +389,198 @@ class PosixTester(unittest.TestCase):
                 set([int(x) for x in groups.split()]),
                 set(posix.getgroups() + [posix.getegid()]))
 
+    # tests for the posix *at functions follow
+
+    @unittest.skipUnless(hasattr(posix, 'faccessat'), "test needs posix.faccessat()")
+    def test_faccessat(self):
+        f = posix.open(posix.getcwd(), posix.O_RDONLY)
+        try:
+            self.assertTrue(posix.faccessat(f, support.TESTFN, os.R_OK))
+        finally:
+            posix.close(f)
+
+    @unittest.skipUnless(hasattr(posix, 'fchmodat'), "test needs posix.fchmodat()")
+    def test_fchmodat(self):
+        os.chmod(support.TESTFN, stat.S_IRUSR)
+
+        f = posix.open(posix.getcwd(), posix.O_RDONLY)
+        try:
+            posix.fchmodat(f, support.TESTFN, stat.S_IRUSR | stat.S_IWUSR)
+
+            s = posix.stat(support.TESTFN)
+            self.assertEqual(s[0] & stat.S_IRWXU, stat.S_IRUSR | stat.S_IWUSR)
+        finally:
+            posix.close(f)
+
+    @unittest.skipUnless(hasattr(posix, 'fchownat'), "test needs posix.fchownat()")
+    def test_fchownat(self):
+        support.unlink(support.TESTFN)
+        open(support.TESTFN, 'w').close()
+
+        f = posix.open(posix.getcwd(), posix.O_RDONLY)
+        try:
+            posix.fchownat(f, support.TESTFN, os.getuid(), os.getgid())
+        finally:
+            posix.close(f)
+
+    @unittest.skipUnless(hasattr(posix, 'fstatat'), "test needs posix.fstatat()")
+    def test_fstatat(self):
+        support.unlink(support.TESTFN)
+        with open(support.TESTFN, 'w') as outfile:
+            outfile.write("testline\n")
+
+        f = posix.open(posix.getcwd(), posix.O_RDONLY)
+        try:
+            s1 = posix.stat(support.TESTFN)
+            s2 = posix.fstatat(f, support.TESTFN)
+            self.assertEqual(s1, s2)
+        finally:
+            posix.close(f)
+
+    @unittest.skipUnless(hasattr(posix, 'futimesat'), "test needs posix.futimesat()")
+    def test_futimesat(self):
+        f = posix.open(posix.getcwd(), posix.O_RDONLY)
+        try:
+            now = time.time()
+            posix.futimesat(f, support.TESTFN, None)
+            self.assertRaises(TypeError, posix.futimesat, f, support.TESTFN, (None, None))
+            self.assertRaises(TypeError, posix.futimesat, f, support.TESTFN, (now, None))
+            self.assertRaises(TypeError, posix.futimesat, f, support.TESTFN, (None, now))
+            posix.futimesat(f, support.TESTFN, (int(now), int(now)))
+            posix.futimesat(f, support.TESTFN, (now, now))
+        finally:
+            posix.close(f)
+
+    @unittest.skipUnless(hasattr(posix, 'linkat'), "test needs posix.linkat()")
+    def test_linkat(self):
+        f = posix.open(posix.getcwd(), posix.O_RDONLY)
+        try:
+            posix.linkat(f, support.TESTFN, f, support.TESTFN + 'link')
+            # should have same inodes
+            self.assertEqual(posix.stat(support.TESTFN)[1],
+                posix.stat(support.TESTFN + 'link')[1])
+        finally:
+            posix.close(f)
+            support.unlink(support.TESTFN + 'link')
+
+    @unittest.skipUnless(hasattr(posix, 'mkdirat'), "test needs posix.mkdirat()")
+    def test_mkdirat(self):
+        f = posix.open(posix.getcwd(), posix.O_RDONLY)
+        try:
+            posix.mkdirat(f, support.TESTFN + 'dir')
+            posix.stat(support.TESTFN + 'dir') # should not raise exception
+        finally:
+            posix.close(f)
+            support.rmtree(support.TESTFN + 'dir')
+
+    @unittest.skipUnless(hasattr(posix, 'mknodat') and hasattr(stat, 'S_IFIFO'),
+                         "don't have mknodat()/S_IFIFO")
+    def test_mknodat(self):
+        # Test using mknodat() to create a FIFO (the only use specified
+        # by POSIX).
+        support.unlink(support.TESTFN)
+        mode = stat.S_IFIFO | stat.S_IRUSR | stat.S_IWUSR
+        f = posix.open(posix.getcwd(), posix.O_RDONLY)
+        try:
+            posix.mknodat(f, support.TESTFN, mode, 0)
+        except OSError as e:
+            # Some old systems don't allow unprivileged users to use
+            # mknod(), or only support creating device nodes.
+            self.assertIn(e.errno, (errno.EPERM, errno.EINVAL))
+        else:
+            self.assertTrue(stat.S_ISFIFO(posix.stat(support.TESTFN).st_mode))
+        finally:
+            posix.close(f)
+
+    @unittest.skipUnless(hasattr(posix, 'openat'), "test needs posix.openat()")
+    def test_openat(self):
+        support.unlink(support.TESTFN)
+        with open(support.TESTFN, 'w') as outfile:
+            outfile.write("testline\n")
+        a = posix.open(posix.getcwd(), posix.O_RDONLY)
+        b = posix.openat(a, support.TESTFN, posix.O_RDONLY)
+        try:
+            res = posix.read(b, 9).decode(encoding="utf-8")
+            self.assertEqual("testline\n", res)
+        finally:
+            posix.close(a)
+            posix.close(b)
+
+    @unittest.skipUnless(hasattr(posix, 'readlinkat'), "test needs posix.readlinkat()")
+    def test_readlinkat(self):
+        os.symlink(support.TESTFN, support.TESTFN + 'link')
+        f = posix.open(posix.getcwd(), posix.O_RDONLY)
+        try:
+            self.assertEqual(posix.readlink(support.TESTFN + 'link'),
+                posix.readlinkat(f, support.TESTFN + 'link'))
+        finally:
+            support.unlink(support.TESTFN + 'link')
+            posix.close(f)
+
+    @unittest.skipUnless(hasattr(posix, 'renameat'), "test needs posix.renameat()")
+    def test_renameat(self):
+        support.unlink(support.TESTFN)
+        open(support.TESTFN + 'ren', 'w').close()
+        f = posix.open(posix.getcwd(), posix.O_RDONLY)
+        try:
+            posix.renameat(f, support.TESTFN + 'ren', f, support.TESTFN)
+        except:
+            posix.rename(support.TESTFN + 'ren', support.TESTFN)
+            raise
+        else:
+            posix.stat(support.TESTFN) # should not throw exception
+        finally:
+            posix.close(f)
+
+    @unittest.skipUnless(hasattr(posix, 'symlinkat'), "test needs posix.symlinkat()")
+    def test_symlinkat(self):
+        f = posix.open(posix.getcwd(), posix.O_RDONLY)
+        try:
+            posix.symlinkat(support.TESTFN, f, support.TESTFN + 'link')
+            self.assertEqual(posix.readlink(support.TESTFN + 'link'), support.TESTFN)
+        finally:
+            posix.close(f)
+            support.unlink(support.TESTFN + 'link')
+
+    @unittest.skipUnless(hasattr(posix, 'unlinkat'), "test needs posix.unlinkat()")
+    def test_unlinkat(self):
+        f = posix.open(posix.getcwd(), posix.O_RDONLY)
+        open(support.TESTFN + 'del', 'w').close()
+        posix.stat(support.TESTFN + 'del') # should not throw exception
+        try:
+            posix.unlinkat(f, support.TESTFN + 'del')
+        except:
+            support.unlink(support.TESTFN + 'del')
+            raise
+        else:
+            self.assertRaises(OSError, posix.stat, support.TESTFN + 'link')
+        finally:
+            posix.close(f)
+
+    @unittest.skipUnless(hasattr(posix, 'utimensat'), "test needs posix.utimensat()")
+    def test_utimensat(self):
+        f = posix.open(posix.getcwd(), posix.O_RDONLY)
+        try:
+            now = time.time()
+            posix.utimensat(f, support.TESTFN, None, None)
+            self.assertRaises(TypeError, posix.utimensat, f, support.TESTFN, (None, None), (None, None))
+            self.assertRaises(TypeError, posix.utimensat, f, support.TESTFN, (now, 0), None)
+            self.assertRaises(TypeError, posix.utimensat, f, support.TESTFN, None, (now, 0))
+            posix.utimensat(f, support.TESTFN, (int(now), int((now - int(now)) * 1e9)),
+                    (int(now), int((now - int(now)) * 1e9)))
+        finally:
+            posix.close(f)
+
+    @unittest.skipUnless(hasattr(posix, 'mkfifoat'), "don't have mkfifoat()")
+    def test_mkfifoat(self):
+        support.unlink(support.TESTFN)
+        f = posix.open(posix.getcwd(), posix.O_RDONLY)
+        try:
+            posix.mkfifoat(f, support.TESTFN, stat.S_IRUSR | stat.S_IWUSR)
+            self.assertTrue(stat.S_ISFIFO(posix.stat(support.TESTFN).st_mode))
+        finally:
+            posix.close(f)
+
 class PosixGroupsTester(unittest.TestCase):
 
     def setUp(self):

Misc/NEWS

@@ -35,6 +35,9 @@ Core and Builtins
 Library
 -------
 
+- Issue #4761: Add the *at() family of functions (openat(), etc.) to the posix
+  module.  Patch by Ross Lagerwall.
+
 - Issue #7322: Trying to read from a socket's file-like object after a timeout
   occurred now raises an error instead of silently losing data.
 

Modules/posixmodule.c

@@ -8009,6 +8009,552 @@ posix_getresgid (PyObject *self, PyObject *noargs)
 }
 #endif
 
+/* Posix *at family of functions:
+    faccessat, fchmodat, fchownat, fstatat, futimesat,
+    linkat, mkdirat, mknodat, openat, readlinkat, renameat, symlinkat,
+    unlinkat, utimensat, mkfifoat */
+
+#ifdef HAVE_FACCESSAT
+PyDoc_STRVAR(posix_faccessat__doc__,
+"faccessat(dirfd, path, mode, flags=0) -> True if granted, False otherwise\n\n\
+Like access() but if path is relative, it is taken as relative to dirfd.\n\
+flags is optional and can be constructed by ORing together zero or more\n\
+of these values: AT_SYMLINK_NOFOLLOW, AT_EACCESS.\n\
+If path is relative and dirfd is the special value AT_FDCWD, then path\n\
+is interpreted relative to the current working directory.");
+
+static PyObject *
+posix_faccessat(PyObject *self, PyObject *args)
+{
+    PyObject *opath;
+    char *path;
+    int mode;
+    int res;
+    int dirfd, flags = 0;
+    if (!PyArg_ParseTuple(args, "iO&i|i:faccessat",
+            &dirfd, PyUnicode_FSConverter, &opath, &mode, &flags))
+        return NULL;
+    path = PyBytes_AsString(opath);
+    Py_BEGIN_ALLOW_THREADS
+    res = faccessat(dirfd, path, mode, flags);
+    Py_END_ALLOW_THREADS
+    Py_DECREF(opath);
+    return PyBool_FromLong(res == 0);
+}
+#endif
+
+#ifdef HAVE_FCHMODAT
+PyDoc_STRVAR(posix_fchmodat__doc__,
+"fchmodat(dirfd, path, mode, flags=0)\n\n\
+Like chmod() but if path is relative, it is taken as relative to dirfd.\n\
+flags is optional and may be 0 or AT_SYMLINK_NOFOLLOW.\n\
+If path is relative and dirfd is the special value AT_FDCWD, then path\n\
+is interpreted relative to the current working directory.");
+
+static PyObject *
+posix_fchmodat(PyObject *self, PyObject *args)
+{
+    int dirfd, mode, res;
+    int flags = 0;
+    PyObject *opath;
+    char *path;
+
+    if (!PyArg_ParseTuple(args, "iO&i|i:fchmodat",
+            &dirfd, PyUnicode_FSConverter, &opath, &mode, &flags))
+        return NULL;
+
+    path = PyBytes_AsString(opath);
+
+    Py_BEGIN_ALLOW_THREADS
+    res = fchmodat(dirfd, path, mode, flags);
+    Py_END_ALLOW_THREADS
+    Py_DECREF(opath);
+    if (res < 0)
+        return posix_error();
+    Py_RETURN_NONE;
+}
+#endif /* HAVE_FCHMODAT */
+
+#ifdef HAVE_FCHOWNAT
+PyDoc_STRVAR(posix_fchownat__doc__,
+"fchownat(dirfd, path, uid, gid, flags=0)\n\n\
+Like chown() but if path is relative, it is taken as relative to dirfd.\n\
+flags is optional and may be 0 or AT_SYMLINK_NOFOLLOW.\n\
+If path is relative and dirfd is the special value AT_FDCWD, then path\n\
+is interpreted relative to the current working directory.");
+
+static PyObject *
+posix_fchownat(PyObject *self, PyObject *args)
+{
+    PyObject *opath;
+    int dirfd, res;
+    long uid, gid;
+    int flags = 0;
+    char *path;
+    
+    if (!PyArg_ParseTuple(args, "iO&ll|i:fchownat",
+            &dirfd, PyUnicode_FSConverter, &opath, &uid, &gid, &flags))
+        return NULL;
+
+    path = PyBytes_AsString(opath);
+
+    Py_BEGIN_ALLOW_THREADS
+    res = fchownat(dirfd, path, (uid_t) uid, (gid_t) gid, flags);
+    Py_END_ALLOW_THREADS
+    Py_DECREF(opath);
+    if (res < 0)
+        return posix_error();
+    Py_RETURN_NONE;
+}
+#endif /* HAVE_FCHOWNAT */
+
+#ifdef HAVE_FSTATAT
+PyDoc_STRVAR(posix_fstatat__doc__,
+"fstatat(dirfd, path, flags=0) -> stat result\n\n\
+Like stat() but if path is relative, it is taken as relative to dirfd.\n\
+flags is optional and may be 0 or AT_SYMLINK_NOFOLLOW.\n\
+If path is relative and dirfd is the special value AT_FDCWD, then path\n\
+is interpreted relative to the current working directory.");
+
+static PyObject *
+posix_fstatat(PyObject *self, PyObject *args)
+{
+    PyObject *opath;
+    char *path;
+    STRUCT_STAT st;
+    int dirfd, res, flags = 0;
+
+    if (!PyArg_ParseTuple(args, "iO&|i:fstatat",
+            &dirfd, PyUnicode_FSConverter, &opath, &flags))
+        return NULL;
+    path = PyBytes_AsString(opath);
+
+    Py_BEGIN_ALLOW_THREADS
+    res = fstatat(dirfd, path, &st, flags);
+    Py_END_ALLOW_THREADS
+    Py_DECREF(opath);
+    if (res != 0)
+        return posix_error();
+
+    return _pystat_fromstructstat(&st);
+}
+#endif
+
+#ifdef HAVE_FUTIMESAT
+PyDoc_STRVAR(posix_futimesat__doc__,
+"futimesat(dirfd, path, (atime, mtime))\n\
+futimesat(dirfd, path, None)\n\n\
+Like utime() but if path is relative, it is taken as relative to dirfd.\n\
+If path is relative and dirfd is the special value AT_FDCWD, then path\n\
+is interpreted relative to the current working directory.");
+
+static PyObject *
+posix_futimesat(PyObject *self, PyObject *args)
+{
+    PyObject *opath;
+    char *path;
+    int res, dirfd;
+    PyObject* arg;
+
+    struct timeval buf[2];
+
+    if (!PyArg_ParseTuple(args, "iO&O:futimesat",
+            &dirfd, PyUnicode_FSConverter, &opath, &arg))
+        return NULL;
+    path = PyBytes_AsString(opath);
+    if (arg == Py_None) {
+        /* optional time values not given */
+        Py_BEGIN_ALLOW_THREADS
+        res = futimesat(dirfd, path, NULL);
+        Py_END_ALLOW_THREADS
+    }
+    else if (!PyTuple_Check(arg) || PyTuple_Size(arg) != 2) {
+        PyErr_SetString(PyExc_TypeError,
+                "futimesat() arg 3 must be a tuple (atime, mtime)");
+        Py_DECREF(opath);
+        return NULL;
+    }
+    else {
+        if (extract_time(PyTuple_GET_ITEM(arg, 0),
+				&(buf[0].tv_sec), &(buf[0].tv_usec)) == -1) {
+            Py_DECREF(opath);
+            return NULL;
+        }
+        if (extract_time(PyTuple_GET_ITEM(arg, 1),
+				&(buf[1].tv_sec), &(buf[1].tv_usec)) == -1) {
+            Py_DECREF(opath);
+            return NULL;
+        }
+        Py_BEGIN_ALLOW_THREADS
+        res = futimesat(dirfd, path, buf);
+        Py_END_ALLOW_THREADS
+    }
+    Py_DECREF(opath);
+    if (res < 0) {
+        return posix_error();
+    }
+    Py_RETURN_NONE;
+}
+#endif
+
+#ifdef HAVE_LINKAT
+PyDoc_STRVAR(posix_linkat__doc__,
+"linkat(srcfd, srcpath, dstfd, dstpath, flags=0)\n\n\
+Like link() but if srcpath is relative, it is taken as relative to srcfd\n\
+and if dstpath is relative, it is taken as relative to dstfd.\n\
+flags is optional and may be 0 or AT_SYMLINK_FOLLOW.\n\
+If srcpath is relative and srcfd is the special value AT_FDCWD, then\n\
+srcpath is interpreted relative to the current working directory. This\n\
+also applies for dstpath.");
+
+static PyObject *
+posix_linkat(PyObject *self, PyObject *args)
+{
+    PyObject *osrc, *odst;
+    char *src, *dst;
+    int res, srcfd, dstfd;
+    int flags = 0;
+
+    if (!PyArg_ParseTuple(args, "iO&iO&|i:linkat",
+            &srcfd, PyUnicode_FSConverter, &osrc, &dstfd, PyUnicode_FSConverter, &odst, &flags))
+        return NULL;
+    src = PyBytes_AsString(osrc);
+    dst = PyBytes_AsString(odst);
+    Py_BEGIN_ALLOW_THREADS
+    res = linkat(srcfd, src, dstfd, dst, flags);
+    Py_END_ALLOW_THREADS
+    Py_DECREF(osrc);
+    Py_DECREF(odst);
+    if (res < 0)
+        return posix_error();
+    Py_RETURN_NONE;
+}
+#endif /* HAVE_LINKAT */
+
+#ifdef HAVE_MKDIRAT
+PyDoc_STRVAR(posix_mkdirat__doc__,
+"mkdirat(dirfd, path, mode=0o777)\n\n\
+Like mkdir() but if path is relative, it is taken as relative to dirfd.\n\
+If path is relative and dirfd is the special value AT_FDCWD, then path\n\
+is interpreted relative to the current working directory.");
+
+static PyObject *
+posix_mkdirat(PyObject *self, PyObject *args)
+{
+    int res, dirfd;
+    PyObject *opath;
+    char *path;
+    int mode = 0777;
+
+    if (!PyArg_ParseTuple(args, "iO&|i:mkdirat",
+            &dirfd, PyUnicode_FSConverter, &opath, &mode))
+        return NULL;
+    path = PyBytes_AsString(opath);
+    Py_BEGIN_ALLOW_THREADS
+    res = mkdirat(dirfd, path, mode);
+    Py_END_ALLOW_THREADS
+    Py_DECREF(opath);
+    if (res < 0)
+        return posix_error();
+    Py_RETURN_NONE;
+}
+#endif
+
+#if defined(HAVE_MKNODAT) && defined(HAVE_MAKEDEV)
+PyDoc_STRVAR(posix_mknodat__doc__,
+"mknodat(dirfd, path, mode=0o600, device=0)\n\n\
+Like mknod() but if path is relative, it is taken as relative to dirfd.\n\
+If path is relative and dirfd is the special value AT_FDCWD, then path\n\
+is interpreted relative to the current working directory.");
+
+static PyObject *
+posix_mknodat(PyObject *self, PyObject *args)
+{
+    PyObject *opath;
+    char *filename;
+    int mode = 0600;
+    int device = 0;
+    int res, dirfd;
+    if (!PyArg_ParseTuple(args, "iO&|ii:mknodat", &dirfd,
+            PyUnicode_FSConverter, &opath, &mode, &device))
+        return NULL;
+    filename = PyBytes_AS_STRING(opath);
+    Py_BEGIN_ALLOW_THREADS
+    res = mknodat(dirfd, filename, mode, device);
+    Py_END_ALLOW_THREADS
+    Py_DECREF(opath);
+    if (res < 0)
+        return posix_error();
+    Py_RETURN_NONE;
+}
+#endif
+
+#ifdef HAVE_OPENAT
+PyDoc_STRVAR(posix_openat__doc__,
+"openat(dirfd, path, flag, mode=0o777) -> fd\n\n\
+Like open() but if path is relative, it is taken as relative to dirfd.\n\
+If path is relative and dirfd is the special value AT_FDCWD, then path\n\
+is interpreted relative to the current working directory.");
+
+static PyObject *
+posix_openat(PyObject *self, PyObject *args)
+{
+    PyObject *ofile;
+    char *file;
+    int flag, dirfd, fd;
+    int mode = 0777;
+
+    if (!PyArg_ParseTuple(args, "iO&i|i:openat",
+            &dirfd, PyUnicode_FSConverter, &ofile,
+            &flag, &mode))
+        return NULL;
+    file = PyBytes_AsString(ofile);
+    Py_BEGIN_ALLOW_THREADS
+    fd = openat(dirfd, file, flag, mode);
+    Py_END_ALLOW_THREADS
+    Py_DECREF(ofile);
+    if (fd < 0)
+        return posix_error();
+    return PyLong_FromLong((long)fd);
+}
+#endif
+
+#ifdef HAVE_READLINKAT
+PyDoc_STRVAR(posix_readlinkat__doc__,
+"readlinkat(dirfd, path) -> path\n\n\
+Like readlink() but if path is relative, it is taken as relative to dirfd.\n\
+If path is relative and dirfd is the special value AT_FDCWD, then path\n\
+is interpreted relative to the current working directory.");
+
+static PyObject *
+posix_readlinkat(PyObject *self, PyObject *args)
+{
+    PyObject *v, *opath;
+    char buf[MAXPATHLEN];
+    char *path;
+    int n, dirfd;
+    int arg_is_unicode = 0;
+
+    if (!PyArg_ParseTuple(args, "iO&:readlinkat",
+            &dirfd, PyUnicode_FSConverter, &opath))
+        return NULL;
+    path = PyBytes_AsString(opath);
+    v = PySequence_GetItem(args, 1);
+    if (v == NULL) {
+        Py_DECREF(opath);
+        return NULL;
+    }
+
+    if (PyUnicode_Check(v)) {
+        arg_is_unicode = 1;
+    }
+    Py_DECREF(v);
+
+    Py_BEGIN_ALLOW_THREADS
+    n = readlinkat(dirfd, path, buf, (int) sizeof buf);
+    Py_END_ALLOW_THREADS
+    Py_DECREF(opath);
+    if (n < 0)
+        return posix_error();
+
+    if (arg_is_unicode)
+        return PyUnicode_DecodeFSDefaultAndSize(buf, n);
+    else
+        return PyBytes_FromStringAndSize(buf, n);
+}
+#endif /* HAVE_READLINKAT */
+
+#ifdef HAVE_RENAMEAT
+PyDoc_STRVAR(posix_renameat__doc__,
+"renameat(olddirfd, oldpath, newdirfd, newpath)\n\n\
+Like rename() but if oldpath is relative, it is taken as relative to\n\
+olddirfd and if newpath is relative, it is taken as relative to newdirfd.\n\
+If oldpath is relative and olddirfd is the special value AT_FDCWD, then\n\
+oldpath is interpreted relative to the current working directory. This\n\
+also applies for newpath.");
+
+static PyObject *
+posix_renameat(PyObject *self, PyObject *args)
+{
+    int res;
+    PyObject *opathold, *opathnew;
+    char *opath, *npath;
+    int oldfd, newfd;
+
+    if (!PyArg_ParseTuple(args, "iO&iO&:renameat",
+            &oldfd, PyUnicode_FSConverter, &opathold, &newfd, PyUnicode_FSConverter, &opathnew))
+        return NULL;
+    opath = PyBytes_AsString(opathold);
+    npath = PyBytes_AsString(opathnew);
+    Py_BEGIN_ALLOW_THREADS
+    res = renameat(oldfd, opath, newfd, npath);
+    Py_END_ALLOW_THREADS
+    Py_DECREF(opathold);
+    Py_DECREF(opathnew);
+    if (res < 0)
+        return posix_error();
+    Py_RETURN_NONE;
+}
+#endif
+
+#if HAVE_SYMLINKAT
+PyDoc_STRVAR(posix_symlinkat__doc__,
+"symlinkat(src, dstfd, dst)\n\n\
+Like symlink() but if dst is relative, it is taken as relative to dstfd.\n\
+If dst is relative and dstfd is the special value AT_FDCWD, then dst\n\
+is interpreted relative to the current working directory.");
+
+static PyObject *
+posix_symlinkat(PyObject *self, PyObject *args)
+{
+    int res, dstfd;
+    PyObject *osrc, *odst;
+    char *src, *dst;
+
+    if (!PyArg_ParseTuple(args, "O&iO&:symlinkat",
+            PyUnicode_FSConverter, &osrc, &dstfd, PyUnicode_FSConverter, &odst))
+        return NULL;
+    src = PyBytes_AsString(osrc);
+    dst = PyBytes_AsString(odst);
+    Py_BEGIN_ALLOW_THREADS
+    res = symlinkat(src, dstfd, dst);
+    Py_END_ALLOW_THREADS
+    Py_DECREF(osrc);
+    Py_DECREF(odst);
+    if (res < 0)
+        return posix_error();
+    Py_RETURN_NONE;
+}
+#endif /* HAVE_SYMLINKAT */
+
+#ifdef HAVE_UNLINKAT
+PyDoc_STRVAR(posix_unlinkat__doc__,
+"unlinkat(dirfd, path, flags=0)\n\n\
+Like unlink() but if path is relative, it is taken as relative to dirfd.\n\
+flags is optional and may be 0 or AT_REMOVEDIR. If AT_REMOVEDIR is\n\
+specified, unlinkat() behaves like rmdir().\n\
+If path is relative and dirfd is the special value AT_FDCWD, then path\n\
+is interpreted relative to the current working directory.");
+
+static PyObject *
+posix_unlinkat(PyObject *self, PyObject *args)
+{
+    int dirfd, res, flags = 0;
+    PyObject *opath;
+    char *path;
+
+    if (!PyArg_ParseTuple(args, "iO&|i:unlinkat",
+            &dirfd, PyUnicode_FSConverter, &opath, &flags))
+        return NULL;
+    path = PyBytes_AsString(opath);
+    Py_BEGIN_ALLOW_THREADS
+    res = unlinkat(dirfd, path, flags);
+    Py_END_ALLOW_THREADS
+    Py_DECREF(opath);
+    if (res < 0)
+        return posix_error();
+    Py_RETURN_NONE;
+}
+#endif
+
+#ifdef HAVE_UTIMENSAT
+PyDoc_STRVAR(posix_utimensat__doc__,
+"utimensat(dirfd, path, (atime_sec, atime_nsec),\n\
+    (mtime_sec, mtime_nsec), flags)\n\
+utimensat(dirfd, path, None, None, flags)\n\n\
+Updates the timestamps of a file with nanosecond precision. If path is\n\
+relative, it is taken as relative to dirfd.\n\
+The second form sets atime and mtime to the current time.\n\
+flags is optional and may be 0 or AT_SYMLINK_NOFOLLOW.\n\
+If path is relative and dirfd is the special value AT_FDCWD, then path\n\
+is interpreted relative to the current working directory.\n\
+If *_nsec is specified as UTIME_NOW, the timestamp is updated to the\n\
+current time.\n\
+If *_nsec is specified as UTIME_OMIT, the timestamp is not updated.");
+
+static PyObject *
+posix_utimensat(PyObject *self, PyObject *args)
+{
+    PyObject *opath;
+    char *path;
+    int res, dirfd, flags = 0;
+    PyObject *atime, *mtime;
+
+    struct timespec buf[2];
+
+    if (!PyArg_ParseTuple(args, "iO&OO|i:utimensat",
+            &dirfd, PyUnicode_FSConverter, &opath, &atime, &mtime, &flags))
+        return NULL;
+    path = PyBytes_AsString(opath);
+    if (atime == Py_None && mtime == Py_None) {
+        /* optional time values not given */
+        Py_BEGIN_ALLOW_THREADS
+        res = utimensat(dirfd, path, NULL, flags);
+        Py_END_ALLOW_THREADS
+    }
+    else if (!PyTuple_Check(atime) || PyTuple_Size(atime) != 2) {
+        PyErr_SetString(PyExc_TypeError,
+            "utimensat() arg 3 must be a tuple (atime_sec, atime_nsec)");
+        Py_DECREF(opath);
+        return NULL;
+    }
+    else if (!PyTuple_Check(mtime) || PyTuple_Size(mtime) != 2) {
+        PyErr_SetString(PyExc_TypeError,
+            "utimensat() arg 4 must be a tuple (mtime_sec, mtime_nsec)");
+        Py_DECREF(opath);
+        return NULL;
+    }
+    else {
+        if (!PyArg_ParseTuple(atime, "ll:utimensat",
+                &(buf[0].tv_sec), &(buf[0].tv_nsec))) {
+            Py_DECREF(opath);
+            return NULL;
+        }
+        if (!PyArg_ParseTuple(mtime, "ll:utimensat",
+                &(buf[1].tv_sec), &(buf[1].tv_nsec))) {
+            Py_DECREF(opath);
+            return NULL;
+        }
+        Py_BEGIN_ALLOW_THREADS
+        res = utimensat(dirfd, path, buf, flags);
+        Py_END_ALLOW_THREADS
+    }
+    Py_DECREF(opath);
+    if (res < 0) {
+        return posix_error();
+    }
+    Py_RETURN_NONE;
+}
+#endif
+
+#ifdef HAVE_MKFIFOAT
+PyDoc_STRVAR(posix_mkfifoat__doc__,
+"mkfifoat(dirfd, path, mode=0o666)\n\n\
+Like mkfifo() but if path is relative, it is taken as relative to dirfd.\n\
+If path is relative and dirfd is the special value AT_FDCWD, then path\n\
+is interpreted relative to the current working directory.");
+
+static PyObject *
+posix_mkfifoat(PyObject *self, PyObject *args)
+{
+    PyObject *opath;
+    char *filename;
+    int mode = 0666;
+    int res, dirfd;
+    if (!PyArg_ParseTuple(args, "iO&|i:mkfifoat",
+            &dirfd, PyUnicode_FSConverter, &opath, &mode))
+        return NULL;
+    filename = PyBytes_AS_STRING(opath);
+    Py_BEGIN_ALLOW_THREADS
+    res = mkfifoat(dirfd, filename, mode);
+    Py_END_ALLOW_THREADS
+    Py_DECREF(opath);
+    if (res < 0)
+        return posix_error();
+    Py_RETURN_NONE;
+}
+#endif
+
 static PyMethodDef posix_methods[] = {
     {"access",          posix_access, METH_VARARGS, posix_access__doc__},
 #ifdef HAVE_TTYNAME
@@ -8335,6 +8881,52 @@ static PyMethodDef posix_methods[] = {
     {"getresgid",       posix_getresgid, METH_NOARGS, posix_getresgid__doc__},
 #endif
 
+/* posix *at family of functions */
+#ifdef HAVE_FACCESSAT
+    {"faccessat",       posix_faccessat, METH_VARARGS, posix_faccessat__doc__},
+#endif
+#ifdef HAVE_FCHMODAT
+    {"fchmodat",        posix_fchmodat, METH_VARARGS, posix_fchmodat__doc__},
+#endif /* HAVE_FCHMODAT */
+#ifdef HAVE_FCHOWNAT
+    {"fchownat",        posix_fchownat, METH_VARARGS, posix_fchownat__doc__},
+#endif /* HAVE_FCHOWNAT */
+#ifdef HAVE_FSTATAT
+    {"fstatat",         posix_fstatat, METH_VARARGS, posix_fstatat__doc__},
+#endif
+#ifdef HAVE_FUTIMESAT
+    {"futimesat",       posix_futimesat, METH_VARARGS, posix_futimesat__doc__},
+#endif
+#ifdef HAVE_LINKAT
+    {"linkat",          posix_linkat, METH_VARARGS, posix_linkat__doc__},
+#endif /* HAVE_LINKAT */
+#ifdef HAVE_MKDIRAT
+    {"mkdirat",         posix_mkdirat, METH_VARARGS, posix_mkdirat__doc__},
+#endif
+#if defined(HAVE_MKNODAT) && defined(HAVE_MAKEDEV)
+    {"mknodat",         posix_mknodat, METH_VARARGS, posix_mknodat__doc__},
+#endif
+#ifdef HAVE_OPENAT
+    {"openat",      posix_openat, METH_VARARGS, posix_openat__doc__},
+#endif
+#ifdef HAVE_READLINKAT
+    {"readlinkat",      posix_readlinkat, METH_VARARGS, posix_readlinkat__doc__},
+#endif /* HAVE_READLINKAT */
+#ifdef HAVE_RENAMEAT
+    {"renameat",        posix_renameat, METH_VARARGS, posix_renameat__doc__},
+#endif
+#if HAVE_SYMLINKAT
+    {"symlinkat",       posix_symlinkat, METH_VARARGS, posix_symlinkat__doc__},
+#endif /* HAVE_SYMLINKAT */
+#ifdef HAVE_UNLINKAT
+    {"unlinkat",        posix_unlinkat, METH_VARARGS, posix_unlinkat__doc__},
+#endif
+#ifdef HAVE_UTIMENSAT
+    {"utimensat",       posix_utimensat, METH_VARARGS, posix_utimensat__doc__},
+#endif
+#ifdef HAVE_MKFIFOAT
+    {"mkfifoat",        posix_mkfifoat, METH_VARARGS, posix_mkfifoat__doc__},
+#endif
     {NULL,              NULL}            /* Sentinel */
 };
 
@@ -8520,6 +9112,28 @@ all_ins(PyObject *d)
 #ifdef PRIO_USER
     if (ins(d, "PRIO_USER", (long)PRIO_USER)) return -1;
 #endif
+/* posix - constants for *at functions */
+#ifdef AT_SYMLINK_NOFOLLOW
+        if (ins(d, "AT_SYMLINK_NOFOLLOW", (long)AT_SYMLINK_NOFOLLOW)) return -1;
+#endif
+#ifdef AT_EACCESS
+        if (ins(d, "AT_EACCESS", (long)AT_EACCESS)) return -1;
+#endif
+#ifdef AT_FDCWD
+        if (ins(d, "AT_FDCWD", (long)AT_FDCWD)) return -1;
+#endif
+#ifdef AT_REMOVEDIR
+        if (ins(d, "AT_REMOVEDIR", (long)AT_REMOVEDIR)) return -1;
+#endif
+#ifdef AT_SYMLINK_FOLLOW
+        if (ins(d, "AT_SYMLINK_FOLLOW", (long)AT_SYMLINK_FOLLOW)) return -1;
+#endif
+#ifdef UTIME_NOW
+        if (ins(d, "UTIME_NOW", (long)UTIME_NOW)) return -1;
+#endif
+#ifdef UTIME_OMIT
+        if (ins(d, "UTIME_OMIT", (long)UTIME_OMIT)) return -1;
+#endif
 
 
 /* MS Windows */

configure.in

@@ -2534,18 +2534,19 @@ AC_MSG_RESULT(MACHDEP_OBJS)
 
 # checks for library functions
 AC_CHECK_FUNCS(alarm accept4 setitimer getitimer bind_textdomain_codeset chown \
- clock confstr ctermid execv fchmod fchown fork fpathconf ftime ftruncate \
+ clock confstr ctermid execv faccessat fchmod fchmodat fchown fchownat fork \
+ fpathconf fstatat ftime ftruncate futimesat \
  gai_strerror getgroups getlogin getloadavg getpeername getpgid getpid \
  getpriority getresuid getresgid getpwent getspnam getspent getsid getwd \
- initgroups kill killpg lchmod lchown lstat mbrtowc mkfifo mknod mktime \
+ initgroups kill killpg lchmod lchown linkat lstat mbrtowc mkdirat mkfifo \
- mremap nice pathconf pause plock poll pthread_init \
+ mkfifoat mknod mknodat mktime mremap nice openat pathconf pause plock poll \
- putenv readlink realpath \
+ pthread_init putenv readlink readlinkat realpath renameat \
  select sem_open sem_timedwait sem_getvalue sem_unlink sendfile setegid seteuid \
  setgid \
  setlocale setregid setreuid setresuid setresgid setsid setpgid setpgrp setpriority setuid setvbuf \
- sigaction siginterrupt sigrelse snprintf strftime strlcpy \
+ sigaction siginterrupt sigrelse snprintf strftime strlcpy symlinkat \
  sysconf tcgetpgrp tcsetpgrp tempnam timegm times tmpfile tmpnam tmpnam_r \
- truncate uname unsetenv utimes waitpid wait3 wait4 \
+ truncate uname unlinkat unsetenv utimensat utimes waitpid wait3 wait4 \
  wcscoll wcsftime wcsxfrm _getpty)
 
 # For some functions, having a definition is not sufficient, since

pyconfig.h.in

@@ -205,15 +205,24 @@
 /* Define to 1 if you have the `expm1' function. */
 #undef HAVE_EXPM1
 
+/* Define to 1 if you have the `faccessat' function. */
+#undef HAVE_FACCESSAT
+
 /* Define if you have the 'fchdir' function. */
 #undef HAVE_FCHDIR
 
 /* Define to 1 if you have the `fchmod' function. */
 #undef HAVE_FCHMOD
 
+/* Define to 1 if you have the `fchmodat' function. */
+#undef HAVE_FCHMODAT
+
 /* Define to 1 if you have the `fchown' function. */
 #undef HAVE_FCHOWN
 
+/* Define to 1 if you have the `fchownat' function. */
+#undef HAVE_FCHOWNAT
+
 /* Define to 1 if you have the <fcntl.h> header file. */
 #undef HAVE_FCNTL_H
 
@@ -241,6 +250,9 @@
 /* Define to 1 if you have the `fseeko' function. */
 #undef HAVE_FSEEKO
 
+/* Define to 1 if you have the `fstatat' function. */
+#undef HAVE_FSTATAT
+
 /* Define to 1 if you have the `fstatvfs' function. */
 #undef HAVE_FSTATVFS
 
@@ -259,6 +271,9 @@
 /* Define to 1 if you have the `ftruncate' function. */
 #undef HAVE_FTRUNCATE
 
+/* Define to 1 if you have the `futimesat' function. */
+#undef HAVE_FUTIMESAT
+
 /* Define to 1 if you have the `gai_strerror' function. */
 #undef HAVE_GAI_STRERROR
 
@@ -431,6 +446,9 @@
 /* Define if you have the 'link' function. */
 #undef HAVE_LINK
 
+/* Define to 1 if you have the `linkat' function. */
+#undef HAVE_LINKAT
+
 /* Define to 1 if you have the <linux/netlink.h> header file. */
 #undef HAVE_LINUX_NETLINK_H
 
@@ -461,12 +479,21 @@
 /* Define to 1 if you have the <memory.h> header file. */
 #undef HAVE_MEMORY_H
 
+/* Define to 1 if you have the `mkdirat' function. */
+#undef HAVE_MKDIRAT
+
 /* Define to 1 if you have the `mkfifo' function. */
 #undef HAVE_MKFIFO
 
+/* Define to 1 if you have the `mkfifoat' function. */
+#undef HAVE_MKFIFOAT
+
 /* Define to 1 if you have the `mknod' function. */
 #undef HAVE_MKNOD
 
+/* Define to 1 if you have the `mknodat' function. */
+#undef HAVE_MKNODAT
+
 /* Define to 1 if you have the `mktime' function. */
 #undef HAVE_MKTIME
 
@@ -485,6 +512,9 @@
 /* Define to 1 if you have the `nice' function. */
 #undef HAVE_NICE
 
+/* Define to 1 if you have the `openat' function. */
+#undef HAVE_OPENAT
+
 /* Define to 1 if you have the `openpty' function. */
 #undef HAVE_OPENPTY
 
@@ -500,6 +530,9 @@
 /* Define if the OS supports pipe2() */
 #undef HAVE_PIPE2
 
+/* Define if the OS supports pipe2() */
+#undef HAVE_PIPE2
+
 /* Define to 1 if you have the `plock' function. */
 #undef HAVE_PLOCK
 
@@ -536,9 +569,15 @@
 /* Define to 1 if you have the `readlink' function. */
 #undef HAVE_READLINK
 
+/* Define to 1 if you have the `readlinkat' function. */
+#undef HAVE_READLINKAT
+
 /* Define to 1 if you have the `realpath' function. */
 #undef HAVE_REALPATH
 
+/* Define to 1 if you have the `renameat' function. */
+#undef HAVE_RENAMEAT
+
 /* Define if you have readline 2.1 */
 #undef HAVE_RL_CALLBACK
 
@@ -724,6 +763,9 @@
 /* Define if you have the 'symlink' function. */
 #undef HAVE_SYMLINK
 
+/* Define to 1 if you have the `symlinkat' function. */
+#undef HAVE_SYMLINKAT
+
 /* Define to 1 if you have the `sysconf' function. */
 #undef HAVE_SYSCONF
 
@@ -866,6 +908,9 @@
 /* Define to 1 if you have the <unistd.h> header file. */
 #undef HAVE_UNISTD_H
 
+/* Define to 1 if you have the `unlinkat' function. */
+#undef HAVE_UNLINKAT
+
 /* Define to 1 if you have the `unsetenv' function. */
 #undef HAVE_UNSETENV
 
@@ -877,6 +922,9 @@
 /* Define to 1 if you have the <util.h> header file. */
 #undef HAVE_UTIL_H
 
+/* Define to 1 if you have the `utimensat' function. */
+#undef HAVE_UTIMENSAT
+
 /* Define to 1 if you have the `utimes' function. */
 #undef HAVE_UTIMES