merge from trunk

31 files changed, 2090 insertions, 14 deletions

diff --git a/lib/at-func.c b/lib/at-func.c
new file mode 100644
index 00000000000..481eea475a1
--- /dev/null
+++ b/lib/at-func.c
@@ -0,0 +1,146 @@
+/* Define at-style functions like fstatat, unlinkat, fchownat, etc.
+   Copyright (C) 2006, 2009-2012 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 <http://www.gnu.org/licenses/>.  */
+
+/* written by Jim Meyering */
+
+#include "dosname.h" /* solely for definition of IS_ABSOLUTE_FILE_NAME */
+
+#ifdef GNULIB_SUPPORT_ONLY_AT_FDCWD
+# include <errno.h>
+# ifndef ENOTSUP
+#  define ENOTSUP EINVAL
+# endif
+#else
+# include "openat.h"
+# include "openat-priv.h"
+# include "save-cwd.h"
+#endif
+
+#ifdef AT_FUNC_USE_F1_COND
+# define CALL_FUNC(F)                           \
+  (flag == AT_FUNC_USE_F1_COND                  \
+    ? AT_FUNC_F1 (F AT_FUNC_POST_FILE_ARGS)     \
+    : AT_FUNC_F2 (F AT_FUNC_POST_FILE_ARGS))
+# define VALIDATE_FLAG(F)                       \
+  if (flag & ~AT_FUNC_USE_F1_COND)              \
+    {                                           \
+      errno = EINVAL;                           \
+      return FUNC_FAIL;                         \
+    }
+#else
+# define CALL_FUNC(F) (AT_FUNC_F1 (F AT_FUNC_POST_FILE_ARGS))
+# define VALIDATE_FLAG(F) /* empty */
+#endif
+
+#ifdef AT_FUNC_RESULT
+# define FUNC_RESULT AT_FUNC_RESULT
+#else
+# define FUNC_RESULT int
+#endif
+
+#ifdef AT_FUNC_FAIL
+# define FUNC_FAIL AT_FUNC_FAIL
+#else
+# define FUNC_FAIL -1
+#endif
+
+/* Call AT_FUNC_F1 to operate on FILE, which is in the directory
+   open on descriptor FD.  If AT_FUNC_USE_F1_COND is defined to a value,
+   AT_FUNC_POST_FILE_PARAM_DECLS must include a parameter named flag;
+   call AT_FUNC_F2 if FLAG is 0 or fail if FLAG contains more bits than
+   AT_FUNC_USE_F1_COND.  Return int and fail with -1 unless AT_FUNC_RESULT
+   or AT_FUNC_FAIL are defined.  If possible, do it without changing the
+   working directory.  Otherwise, resort to using save_cwd/fchdir,
+   then AT_FUNC_F?/restore_cwd.  If either the save_cwd or the restore_cwd
+   fails, then give a diagnostic and exit nonzero.  */
+FUNC_RESULT
+AT_FUNC_NAME (int fd, char const *file AT_FUNC_POST_FILE_PARAM_DECLS)
+{
+  VALIDATE_FLAG (flag);
+
+  if (fd == AT_FDCWD || IS_ABSOLUTE_FILE_NAME (file))
+    return CALL_FUNC (file);
+
+#ifdef GNULIB_SUPPORT_ONLY_AT_FDCWD
+  errno = ENOTSUP;
+  return FUNC_FAIL;
+#else
+  {
+  /* Be careful to choose names unlikely to conflict with
+     AT_FUNC_POST_FILE_PARAM_DECLS.  */
+  struct saved_cwd saved_cwd;
+  int saved_errno;
+  FUNC_RESULT err;
+
+  {
+    char proc_buf[OPENAT_BUFFER_SIZE];
+    char *proc_file = openat_proc_name (proc_buf, fd, file);
+    if (proc_file)
+      {
+        FUNC_RESULT proc_result = CALL_FUNC (proc_file);
+        int proc_errno = errno;
+        if (proc_file != proc_buf)
+          free (proc_file);
+        /* If the syscall succeeds, or if it fails with an unexpected
+           errno value, then return right away.  Otherwise, fall through
+           and resort to using save_cwd/restore_cwd.  */
+        if (FUNC_FAIL != proc_result)
+          return proc_result;
+        if (! EXPECTED_ERRNO (proc_errno))
+          {
+            errno = proc_errno;
+            return proc_result;
+          }
+      }
+  }
+
+  if (save_cwd (&saved_cwd) != 0)
+    openat_save_fail (errno);
+  if (0 <= fd && fd == saved_cwd.desc)
+    {
+      /* If saving the working directory collides with the user's
+         requested fd, then the user's fd must have been closed to
+         begin with.  */
+      free_cwd (&saved_cwd);
+      errno = EBADF;
+      return FUNC_FAIL;
+    }
+
+  if (fchdir (fd) != 0)
+    {
+      saved_errno = errno;
+      free_cwd (&saved_cwd);
+      errno = saved_errno;
+      return FUNC_FAIL;
+    }
+
+  err = CALL_FUNC (file);
+  saved_errno = (err == FUNC_FAIL ? errno : 0);
+
+  if (restore_cwd (&saved_cwd) != 0)
+    openat_restore_fail (errno);
+
+  free_cwd (&saved_cwd);
+
+  if (saved_errno)
+    errno = saved_errno;
+  return err;
+  }
+#endif
+}
+#undef CALL_FUNC
+#undef FUNC_RESULT
+#undef FUNC_FAIL
diff --git a/lib/close-stream.c b/lib/close-stream.c
new file mode 100644
index 00000000000..04fa5ece09d
--- /dev/null
+++ b/lib/close-stream.c
@@ -0,0 +1,78 @@
+/* Close a stream, with nicer error checking than fclose's.
+
+   Copyright (C) 1998-2002, 2004, 2006-2012 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 <http://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+#include "close-stream.h"
+
+#include <errno.h>
+#include <stdbool.h>
+
+#include "fpending.h"
+
+#if USE_UNLOCKED_IO
+# include "unlocked-io.h"
+#endif
+
+/* Close STREAM.  Return 0 if successful, EOF (setting errno)
+   otherwise.  A failure might set errno to 0 if the error number
+   cannot be determined.
+
+   A failure with errno set to EPIPE may or may not indicate an error
+   situation worth signaling to the user.  See the documentation of the
+   close_stdout_set_ignore_EPIPE function for details.
+
+   If a program writes *anything* to STREAM, that program should close
+   STREAM and make sure that it succeeds before exiting.  Otherwise,
+   suppose that you go to the extreme of checking the return status
+   of every function that does an explicit write to STREAM.  The last
+   printf can succeed in writing to the internal stream buffer, and yet
+   the fclose(STREAM) could still fail (due e.g., to a disk full error)
+   when it tries to write out that buffered data.  Thus, you would be
+   left with an incomplete output file and the offending program would
+   exit successfully.  Even calling fflush is not always sufficient,
+   since some file systems (NFS and CODA) buffer written/flushed data
+   until an actual close call.
+
+   Besides, it's wasteful to check the return value from every call
+   that writes to STREAM -- just let the internal stream state record
+   the failure.  That's what the ferror test is checking below.  */
+
+int
+close_stream (FILE *stream)
+{
+  const bool some_pending = (__fpending (stream) != 0);
+  const bool prev_fail = (ferror (stream) != 0);
+  const bool fclose_fail = (fclose (stream) != 0);
+
+  /* Return an error indication if there was a previous failure or if
+     fclose failed, with one exception: ignore an fclose failure if
+     there was no previous error, no data remains to be flushed, and
+     fclose failed with EBADF.  That can happen when a program like cp
+     is invoked like this 'cp a b >&-' (i.e., with standard output
+     closed) and doesn't generate any output (hence no previous error
+     and nothing to be flushed).  */
+
+  if (prev_fail || (fclose_fail && (some_pending || errno != EBADF)))
+    {
+      if (! fclose_fail)
+        errno = 0;
+      return EOF;
+    }
+
+  return 0;
+}
diff --git a/lib/close-stream.h b/lib/close-stream.h
new file mode 100644
index 00000000000..be3d4196b06
--- /dev/null
+++ b/lib/close-stream.h
@@ -0,0 +1,2 @@
+#include <stdio.h>
+int close_stream (FILE *stream);
diff --git a/lib/euidaccess.c b/lib/euidaccess.c
new file mode 100644
index 00000000000..ca2ceca5d22
--- /dev/null
+++ b/lib/euidaccess.c
@@ -0,0 +1,221 @@
+/* euidaccess -- check if effective user id can access file
+
+   Copyright (C) 1990-1991, 1995, 1998, 2000, 2003-2006, 2008-2012 Free
+   Software Foundation, Inc.
+
+   This file is part of the GNU C Library.
+
+   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 <http://www.gnu.org/licenses/>.  */
+
+/* Written by David MacKenzie and Torbjorn Granlund.
+   Adapted for GNU C library by Roland McGrath.  */
+
+#ifndef _LIBC
+# include <config.h>
+#endif
+
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include "root-uid.h"
+
+#if HAVE_LIBGEN_H
+# include <libgen.h>
+#endif
+
+#include <errno.h>
+#ifndef __set_errno
+# define __set_errno(val) errno = (val)
+#endif
+
+#if defined EACCES && !defined EACCESS
+# define EACCESS EACCES
+#endif
+
+#ifndef F_OK
+# define F_OK 0
+# define X_OK 1
+# define W_OK 2
+# define R_OK 4
+#endif
+
+
+#ifdef _LIBC
+
+# define access __access
+# define getuid __getuid
+# define getgid __getgid
+# define geteuid __geteuid
+# define getegid __getegid
+# define group_member __group_member
+# define euidaccess __euidaccess
+# undef stat
+# define stat stat64
+
+#endif
+
+/* Return 0 if the user has permission of type MODE on FILE;
+   otherwise, return -1 and set 'errno'.
+   Like access, except that it uses the effective user and group
+   id's instead of the real ones, and it does not always check for read-only
+   file system, text busy, etc.  */
+
+int
+euidaccess (const char *file, int mode)
+{
+#if HAVE_FACCESSAT                   /* glibc, AIX 7, Solaris 11, Cygwin 1.7 */
+  return faccessat (AT_FDCWD, file, mode, AT_EACCESS);
+#elif defined EFF_ONLY_OK               /* IRIX, OSF/1, Interix */
+  return access (file, mode | EFF_ONLY_OK);
+#elif defined ACC_SELF                  /* AIX */
+  return accessx (file, mode, ACC_SELF);
+#elif HAVE_EACCESS                      /* FreeBSD */
+  return eaccess (file, mode);
+#else       /* Mac OS X, NetBSD, OpenBSD, HP-UX, Solaris, Cygwin, mingw, BeOS */
+
+  uid_t uid = getuid ();
+  gid_t gid = getgid ();
+  uid_t euid = geteuid ();
+  gid_t egid = getegid ();
+  struct stat stats;
+
+# if HAVE_DECL_SETREGID && PREFER_NONREENTRANT_EUIDACCESS
+
+  /* Define PREFER_NONREENTRANT_EUIDACCESS if you prefer euidaccess to
+     return the correct result even if this would make it
+     nonreentrant.  Define this only if your entire application is
+     safe even if the uid or gid might temporarily change.  If your
+     application uses signal handlers or threads it is probably not
+     safe.  */
+
+  if (mode == F_OK)
+    return stat (file, &stats);
+  else
+    {
+      int result;
+      int saved_errno;
+
+      if (uid != euid)
+        setreuid (euid, uid);
+      if (gid != egid)
+        setregid (egid, gid);
+
+      result = access (file, mode);
+      saved_errno = errno;
+
+      /* Restore them.  */
+      if (uid != euid)
+        setreuid (uid, euid);
+      if (gid != egid)
+        setregid (gid, egid);
+
+      errno = saved_errno;
+      return result;
+    }
+
+# else
+
+  /* The following code assumes the traditional Unix model, and is not
+     correct on systems that have ACLs or the like.  However, it's
+     better than nothing, and it is reentrant.  */
+
+  unsigned int granted;
+  if (uid == euid && gid == egid)
+    /* If we are not set-uid or set-gid, access does the same.  */
+    return access (file, mode);
+
+  if (stat (file, &stats) != 0)
+    return -1;
+
+  /* The super-user can read and write any file, and execute any file
+     that anyone can execute.  */
+  if (euid == ROOT_UID
+      && ((mode & X_OK) == 0
+          || (stats.st_mode & (S_IXUSR | S_IXGRP | S_IXOTH))))
+    return 0;
+
+  /* Convert the mode to traditional form, clearing any bogus bits.  */
+  if (R_OK == 4 && W_OK == 2 && X_OK == 1 && F_OK == 0)
+    mode &= 7;
+  else
+    mode = ((mode & R_OK ? 4 : 0)
+            + (mode & W_OK ? 2 : 0)
+            + (mode & X_OK ? 1 : 0));
+
+  if (mode == 0)
+    return 0;                   /* The file exists.  */
+
+  /* Convert the file's permission bits to traditional form.  */
+  if (S_IRUSR == (4 << 6) && S_IWUSR == (2 << 6) && S_IXUSR == (1 << 6)
+      && S_IRGRP == (4 << 3) && S_IWGRP == (2 << 3) && S_IXGRP == (1 << 3)
+      && S_IROTH == (4 << 0) && S_IWOTH == (2 << 0) && S_IXOTH == (1 << 0))
+    granted = stats.st_mode;
+  else
+    granted = ((stats.st_mode & S_IRUSR ? 4 << 6 : 0)
+               + (stats.st_mode & S_IWUSR ? 2 << 6 : 0)
+               + (stats.st_mode & S_IXUSR ? 1 << 6 : 0)
+               + (stats.st_mode & S_IRGRP ? 4 << 3 : 0)
+               + (stats.st_mode & S_IWGRP ? 2 << 3 : 0)
+               + (stats.st_mode & S_IXGRP ? 1 << 3 : 0)
+               + (stats.st_mode & S_IROTH ? 4 << 0 : 0)
+               + (stats.st_mode & S_IWOTH ? 2 << 0 : 0)
+               + (stats.st_mode & S_IXOTH ? 1 << 0 : 0));
+
+  if (euid == stats.st_uid)
+    granted >>= 6;
+  else if (egid == stats.st_gid || group_member (stats.st_gid))
+    granted >>= 3;
+
+  if ((mode & ~granted) == 0)
+    return 0;
+  __set_errno (EACCESS);
+  return -1;
+
+# endif
+#endif
+}
+#undef euidaccess
+#ifdef weak_alias
+weak_alias (__euidaccess, euidaccess)
+#endif
+
+#ifdef TEST
+# include <error.h>
+# include <stdio.h>
+# include <stdlib.h>
+
+char *program_name;
+
+int
+main (int argc, char **argv)
+{
+  char *file;
+  int mode;
+  int err;
+
+  program_name = argv[0];
+  if (argc < 3)
+    abort ();
+  file = argv[1];
+  mode = atoi (argv[2]);
+
+  err = euidaccess (file, mode);
+  printf ("%d\n", err);
+  if (err != 0)
+    error (0, errno, "%s", file);
+  exit (0);
+}
+#endif
diff --git a/lib/faccessat.c b/lib/faccessat.c
new file mode 100644
index 00000000000..d11a3efaad6
--- /dev/null
+++ b/lib/faccessat.c
@@ -0,0 +1,45 @@
+/* Check the access rights of a file relative to an open directory.
+   Copyright (C) 2009-2012 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 <http://www.gnu.org/licenses/>.  */
+
+/* written by Eric Blake */
+
+#include <config.h>
+
+#include <unistd.h>
+#include <fcntl.h>
+
+#ifndef HAVE_ACCESS
+/* Mingw lacks access, but it also lacks real vs. effective ids, so
+   the gnulib euidaccess module is good enough.  */
+# undef access
+# define access euidaccess
+#endif
+
+/* Invoke access or euidaccess on file, FILE, using mode MODE, in the directory
+   open on descriptor FD.  If possible, do it without changing the
+   working directory.  Otherwise, resort to using save_cwd/fchdir, then
+   (access|euidaccess)/restore_cwd.  If either the save_cwd or the
+   restore_cwd fails, then give a diagnostic and exit nonzero.
+   Note that this implementation only supports AT_EACCESS, although some
+   native versions also support AT_SYMLINK_NOFOLLOW.  */
+
+#define AT_FUNC_NAME faccessat
+#define AT_FUNC_F1 euidaccess
+#define AT_FUNC_F2 access
+#define AT_FUNC_USE_F1_COND AT_EACCESS
+#define AT_FUNC_POST_FILE_PARAM_DECLS , int mode, int flag
+#define AT_FUNC_POST_FILE_ARGS        , mode
+#include "at-func.c"
diff --git a/lib/fcntl.in.h b/lib/fcntl.in.h
new file mode 100644
index 00000000000..604c31b7984
--- /dev/null
+++ b/lib/fcntl.in.h
@@ -0,0 +1,347 @@
+/* Like <fcntl.h>, but with non-working flags defined to 0.
+
+   Copyright (C) 2006-2012 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 <http://www.gnu.org/licenses/>.  */
+
+/* written by Paul Eggert */
+
+#if __GNUC__ >= 3
+@PRAGMA_SYSTEM_HEADER@
+#endif
+@PRAGMA_COLUMNS@
+
+#if defined __need_system_fcntl_h
+/* Special invocation convention.  */
+
+/* Needed before <sys/stat.h>.
+   May also define off_t to a 64-bit type on native Windows.  */
+#include <sys/types.h>
+/* On some systems other than glibc, <sys/stat.h> is a prerequisite of
+   <fcntl.h>.  On glibc systems, we would like to avoid namespace pollution.
+   But on glibc systems, <fcntl.h> includes <sys/stat.h> inside an
+   extern "C" { ... } block, which leads to errors in C++ mode with the
+   overridden <sys/stat.h> from gnulib.  These errors are known to be gone
+   with g++ version >= 4.3.  */
+#if !(defined __GLIBC__ || defined __UCLIBC__) || (defined __cplusplus && defined GNULIB_NAMESPACE && !(__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)))
+# include <sys/stat.h>
+#endif
+#@INCLUDE_NEXT@ @NEXT_FCNTL_H@
+
+#else
+/* Normal invocation convention.  */
+
+#ifndef _@GUARD_PREFIX@_FCNTL_H
+
+/* Needed before <sys/stat.h>.
+   May also define off_t to a 64-bit type on native Windows.  */
+#include <sys/types.h>
+/* On some systems other than glibc, <sys/stat.h> is a prerequisite of
+   <fcntl.h>.  On glibc systems, we would like to avoid namespace pollution.
+   But on glibc systems, <fcntl.h> includes <sys/stat.h> inside an
+   extern "C" { ... } block, which leads to errors in C++ mode with the
+   overridden <sys/stat.h> from gnulib.  These errors are known to be gone
+   with g++ version >= 4.3.  */
+#if !(defined __GLIBC__ || defined __UCLIBC__) || (defined __cplusplus && defined GNULIB_NAMESPACE && !(__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)))
+# include <sys/stat.h>
+#endif
+/* The include_next requires a split double-inclusion guard.  */
+#@INCLUDE_NEXT@ @NEXT_FCNTL_H@
+
+#ifndef _@GUARD_PREFIX@_FCNTL_H
+#define _@GUARD_PREFIX@_FCNTL_H
+
+#ifndef __GLIBC__ /* Avoid namespace pollution on glibc systems.  */
+# include <unistd.h>
+#endif
+
+/* Native Windows platforms declare open(), creat() in <io.h>.  */
+#if (@GNULIB_OPEN@ || defined GNULIB_POSIXCHECK) \
+    && ((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__)
+# include <io.h>
+#endif
+
+
+/* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
+
+/* The definition of _GL_ARG_NONNULL is copied here.  */
+
+/* The definition of _GL_WARN_ON_USE is copied here.  */
+
+
+/* Declare overridden functions.  */
+
+#if @GNULIB_FCNTL@
+# if @REPLACE_FCNTL@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef fcntl
+#   define fcntl rpl_fcntl
+#  endif
+_GL_FUNCDECL_RPL (fcntl, int, (int fd, int action, ...));
+_GL_CXXALIAS_RPL (fcntl, int, (int fd, int action, ...));
+# else
+#  if !@HAVE_FCNTL@
+_GL_FUNCDECL_SYS (fcntl, int, (int fd, int action, ...));
+#  endif
+_GL_CXXALIAS_SYS (fcntl, int, (int fd, int action, ...));
+# endif
+_GL_CXXALIASWARN (fcntl);
+#elif defined GNULIB_POSIXCHECK
+# undef fcntl
+# if HAVE_RAW_DECL_FCNTL
+_GL_WARN_ON_USE (fcntl, "fcntl is not always POSIX compliant - "
+                 "use gnulib module fcntl for portability");
+# endif
+#endif
+
+#if @GNULIB_OPEN@
+# if @REPLACE_OPEN@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef open
+#   define open rpl_open
+#  endif
+_GL_FUNCDECL_RPL (open, int, (const char *filename, int flags, ...)
+                             _GL_ARG_NONNULL ((1)));
+_GL_CXXALIAS_RPL (open, int, (const char *filename, int flags, ...));
+# else
+_GL_CXXALIAS_SYS (open, int, (const char *filename, int flags, ...));
+# endif
+/* On HP-UX 11, in C++ mode, open() is defined as an inline function with a
+   default argument.  _GL_CXXALIASWARN does not work in this case.  */
+# if !defined __hpux
+_GL_CXXALIASWARN (open);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef open
+/* Assume open is always declared.  */
+_GL_WARN_ON_USE (open, "open is not always POSIX compliant - "
+                 "use gnulib module open for portability");
+#endif
+
+#if @GNULIB_OPENAT@
+# if @REPLACE_OPENAT@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef openat
+#   define openat rpl_openat
+#  endif
+_GL_FUNCDECL_RPL (openat, int,
+                  (int fd, char const *file, int flags, /* mode_t mode */ ...)
+                  _GL_ARG_NONNULL ((2)));
+_GL_CXXALIAS_RPL (openat, int,
+                  (int fd, char const *file, int flags, /* mode_t mode */ ...));
+# else
+#  if !@HAVE_OPENAT@
+_GL_FUNCDECL_SYS (openat, int,
+                  (int fd, char const *file, int flags, /* mode_t mode */ ...)
+                  _GL_ARG_NONNULL ((2)));
+#  endif
+_GL_CXXALIAS_SYS (openat, int,
+                  (int fd, char const *file, int flags, /* mode_t mode */ ...));
+# endif
+_GL_CXXALIASWARN (openat);
+#elif defined GNULIB_POSIXCHECK
+# undef openat
+# if HAVE_RAW_DECL_OPENAT
+_GL_WARN_ON_USE (openat, "openat is not portable - "
+                 "use gnulib module openat for portability");
+# endif
+#endif
+
+
+/* Fix up the FD_* macros, only known to be missing on mingw.  */
+
+#ifndef FD_CLOEXEC
+# define FD_CLOEXEC 1
+#endif
+
+/* Fix up the supported F_* macros.  Intentionally leave other F_*
+   macros undefined.  Only known to be missing on mingw.  */
+
+#ifndef F_DUPFD_CLOEXEC
+# define F_DUPFD_CLOEXEC 0x40000000
+/* Witness variable: 1 if gnulib defined F_DUPFD_CLOEXEC, 0 otherwise.  */
+# define GNULIB_defined_F_DUPFD_CLOEXEC 1
+#else
+# define GNULIB_defined_F_DUPFD_CLOEXEC 0
+#endif
+
+#ifndef F_DUPFD
+# define F_DUPFD 1
+#endif
+
+#ifndef F_GETFD
+# define F_GETFD 2
+#endif
+
+/* Fix up the O_* macros.  */
+
+#if !defined O_DIRECT && defined O_DIRECTIO
+/* Tru64 spells it 'O_DIRECTIO'.  */
+# define O_DIRECT O_DIRECTIO
+#endif
+
+#if !defined O_CLOEXEC && defined O_NOINHERIT
+/* Mingw spells it 'O_NOINHERIT'.  */
+# define O_CLOEXEC O_NOINHERIT
+#endif
+
+#ifndef O_CLOEXEC
+# define O_CLOEXEC 0
+#endif
+
+#ifndef O_DIRECT
+# define O_DIRECT 0
+#endif
+
+#ifndef O_DIRECTORY
+# define O_DIRECTORY 0
+#endif
+
+#ifndef O_DSYNC
+# define O_DSYNC 0
+#endif
+
+#ifndef O_EXEC
+# define O_EXEC O_RDONLY /* This is often close enough in older systems.  */
+#endif
+
+#ifndef O_IGNORE_CTTY
+# define O_IGNORE_CTTY 0
+#endif
+
+#ifndef O_NDELAY
+# define O_NDELAY 0
+#endif
+
+#ifndef O_NOATIME
+# define O_NOATIME 0
+#endif
+
+#ifndef O_NONBLOCK
+# define O_NONBLOCK O_NDELAY
+#endif
+
+/* If the gnulib module 'nonblocking' is in use, guarantee a working non-zero
+   value of O_NONBLOCK.  Otherwise, O_NONBLOCK is defined (above) to O_NDELAY
+   or to 0 as fallback.  */
+#if @GNULIB_NONBLOCKING@
+# if O_NONBLOCK
+#  define GNULIB_defined_O_NONBLOCK 0
+# else
+#  define GNULIB_defined_O_NONBLOCK 1
+#  undef O_NONBLOCK
+#  define O_NONBLOCK 0x40000000
+# endif
+#endif
+
+#ifndef O_NOCTTY
+# define O_NOCTTY 0
+#endif
+
+#ifndef O_NOFOLLOW
+# define O_NOFOLLOW 0
+#endif
+
+#ifndef O_NOLINK
+# define O_NOLINK 0
+#endif
+
+#ifndef O_NOLINKS
+# define O_NOLINKS 0
+#endif
+
+#ifndef O_NOTRANS
+# define O_NOTRANS 0
+#endif
+
+#ifndef O_RSYNC
+# define O_RSYNC 0
+#endif
+
+#ifndef O_SEARCH
+# define O_SEARCH O_RDONLY /* This is often close enough in older systems.  */
+#endif
+
+#ifndef O_SYNC
+# define O_SYNC 0
+#endif
+
+#ifndef O_TTY_INIT
+# define O_TTY_INIT 0
+#endif
+
+#if ~O_ACCMODE & (O_RDONLY | O_WRONLY | O_RDWR | O_EXEC | O_SEARCH)
+# undef O_ACCMODE
+# define O_ACCMODE (O_RDONLY | O_WRONLY | O_RDWR | O_EXEC | O_SEARCH)
+#endif
+
+/* For systems that distinguish between text and binary I/O.
+   O_BINARY is usually declared in fcntl.h  */
+#if !defined O_BINARY && defined _O_BINARY
+  /* For MSC-compatible compilers.  */
+# define O_BINARY _O_BINARY
+# define O_TEXT _O_TEXT
+#endif
+
+#if defined __BEOS__ || defined __HAIKU__
+  /* BeOS 5 and Haiku have O_BINARY and O_TEXT, but they have no effect.  */
+# undef O_BINARY
+# undef O_TEXT
+#endif
+
+#ifndef O_BINARY
+# define O_BINARY 0
+# define O_TEXT 0
+#endif
+
+/* Fix up the AT_* macros.  */
+
+/* Work around a bug in Solaris 9 and 10: AT_FDCWD is positive.  Its
+   value exceeds INT_MAX, so its use as an int doesn't conform to the
+   C standard, and GCC and Sun C complain in some cases.  If the bug
+   is present, undef AT_FDCWD here, so it can be redefined below.  */
+#if 0 < AT_FDCWD && AT_FDCWD == 0xffd19553
+# undef AT_FDCWD
+#endif
+
+/* Use the same bit pattern as Solaris 9, but with the proper
+   signedness.  The bit pattern is important, in case this actually is
+   Solaris with the above workaround.  */
+#ifndef AT_FDCWD
+# define AT_FDCWD (-3041965)
+#endif
+
+/* Use the same values as Solaris 9.  This shouldn't matter, but
+   there's no real reason to differ.  */
+#ifndef AT_SYMLINK_NOFOLLOW
+# define AT_SYMLINK_NOFOLLOW 4096
+#endif
+
+#ifndef AT_REMOVEDIR
+# define AT_REMOVEDIR 1
+#endif
+
+/* Solaris 9 lacks these two, so just pick unique values.  */
+#ifndef AT_SYMLINK_FOLLOW
+# define AT_SYMLINK_FOLLOW 2
+#endif
+
+#ifndef AT_EACCESS
+# define AT_EACCESS 4
+#endif
+
+
+#endif /* _@GUARD_PREFIX@_FCNTL_H */
+#endif /* _@GUARD_PREFIX@_FCNTL_H */
+#endif
diff --git a/lib/fpending.c b/lib/fpending.c
new file mode 100644
index 00000000000..2591d534377
--- /dev/null
+++ b/lib/fpending.c
@@ -0,0 +1,30 @@
+/* fpending.c -- return the number of pending output bytes on a stream
+   Copyright (C) 2000, 2004, 2006-2007, 2009-2012 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 <http://www.gnu.org/licenses/>.  */
+
+/* Written by Jim Meyering. */
+
+#include <config.h>
+
+#include "fpending.h"
+
+/* Return the number of pending (aka buffered, unflushed)
+   bytes on the stream, FP, that is open for writing.  */
+size_t
+__fpending (FILE *fp)
+{
+  return PENDING_OUTPUT_N_BYTES;
+}
diff --git a/lib/fpending.h b/lib/fpending.h
new file mode 100644
index 00000000000..0365287ba76
--- /dev/null
+++ b/lib/fpending.h
@@ -0,0 +1,30 @@
+/* Declare __fpending.
+
+   Copyright (C) 2000, 2003, 2005-2006, 2009-2012 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 <http://www.gnu.org/licenses/>.
+
+   Written by Jim Meyering.  */
+
+#include <stddef.h>
+#include <stdio.h>
+
+#if HAVE_DECL___FPENDING
+# if HAVE_STDIO_EXT_H
+#  include <stdio_ext.h>
+# endif
+#else
+size_t __fpending (FILE *);
+#endif
diff --git a/lib/getgroups.c b/lib/getgroups.c
new file mode 100644
index 00000000000..f9d36236afe
--- /dev/null
+++ b/lib/getgroups.c
@@ -0,0 +1,116 @@
+/* provide consistent interface to getgroups for systems that don't allow N==0
+
+   Copyright (C) 1996, 1999, 2003, 2006-2012 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 <http://www.gnu.org/licenses/>.  */
+
+/* written by Jim Meyering */
+
+#include <config.h>
+
+#include <unistd.h>
+
+#include <errno.h>
+#include <stdlib.h>
+#include <stdint.h>
+
+#if !HAVE_GETGROUPS
+
+/* Provide a stub that fails with ENOSYS, since there is no group
+   information available on mingw.  */
+int
+getgroups (int n _GL_UNUSED, GETGROUPS_T *groups _GL_UNUSED)
+{
+  errno = ENOSYS;
+  return -1;
+}
+
+#else /* HAVE_GETGROUPS */
+
+# undef getgroups
+# ifndef GETGROUPS_ZERO_BUG
+#  define GETGROUPS_ZERO_BUG 0
+# endif
+
+/* On at least Ultrix 4.3 and NextStep 3.2, getgroups (0, NULL) always
+   fails.  On other systems, it returns the number of supplemental
+   groups for the process.  This function handles that special case
+   and lets the system-provided function handle all others.  However,
+   it can fail with ENOMEM if memory is tight.  It is unspecified
+   whether the effective group id is included in the list.  */
+
+int
+rpl_getgroups (int n, gid_t *group)
+{
+  int n_groups;
+  GETGROUPS_T *gbuf;
+  int saved_errno;
+
+  if (n < 0)
+    {
+      errno = EINVAL;
+      return -1;
+    }
+
+  if (n != 0 || !GETGROUPS_ZERO_BUG)
+    {
+      int result;
+      if (sizeof *group == sizeof *gbuf)
+        return getgroups (n, (GETGROUPS_T *) group);
+
+      if (SIZE_MAX / sizeof *gbuf <= n)
+        {
+          errno = ENOMEM;
+          return -1;
+        }
+      gbuf = malloc (n * sizeof *gbuf);
+      if (!gbuf)
+        return -1;
+      result = getgroups (n, gbuf);
+      if (0 <= result)
+        {
+          n = result;
+          while (n--)
+            group[n] = gbuf[n];
+        }
+      saved_errno = errno;
+      free (gbuf);
+      errno == saved_errno;
+      return result;
+    }
+
+  n = 20;
+  while (1)
+    {
+      /* No need to worry about address arithmetic overflow here,
+         since the ancient systems that we're running on have low
+         limits on the number of secondary groups.  */
+      gbuf = malloc (n * sizeof *gbuf);
+      if (!gbuf)
+        return -1;
+      n_groups = getgroups (n, gbuf);
+      if (n_groups == -1 ? errno != EINVAL : n_groups < n)
+        break;
+      free (gbuf);
+      n *= 2;
+    }
+
+  saved_errno = errno;
+  free (gbuf);
+  errno = saved_errno;
+
+  return n_groups;
+}
+
+#endif /* HAVE_GETGROUPS */
diff --git a/lib/gnulib.mk b/lib/gnulib.mk
index d49eb4fdf7a..420520fbce7 100644
--- a/lib/gnulib.mk
+++ b/lib/gnulib.mk
@@ -21,7 +21,7 @@
 # the same distribution terms as the rest of that program.
 #
 # Generated by gnulib-tool.
-# Reproduce by: gnulib-tool --import --dir=. --lib=libgnu --source-base=lib --m4-base=m4 --doc-base=doc --tests-base=tests --aux-dir=build-aux --avoid=errno --avoid=fcntl --avoid=fcntl-h --avoid=fstat --avoid=msvc-inval --avoid=msvc-nothrow --avoid=raise --avoid=select --avoid=sigprocmask --avoid=sys_types --avoid=threadlib --makefile-name=gnulib.mk --conditional-dependencies --no-libtool --macro-prefix=gl --no-vc-files alloca-opt c-ctype c-strcase careadlinkat crypto/md5 crypto/sha1 crypto/sha256 crypto/sha512 dtoastr dtotimespec dup2 environ execinfo filemode getloadavg getopt-gnu gettime gettimeofday ignore-value intprops largefile lstat manywarnings mktime pselect pthread_sigmask readlink socklen stat-time stdalign stdarg stdbool stdio strftime strtoimax strtoumax symlink sys_stat sys_time time timespec-add timespec-sub utimens warnings
+# Reproduce by: gnulib-tool --import --dir=. --lib=libgnu --source-base=lib --m4-base=m4 --doc-base=doc --tests-base=tests --aux-dir=build-aux --avoid=at-internal --avoid=errno --avoid=fchdir --avoid=fcntl --avoid=fstat --avoid=malloc-posix --avoid=msvc-inval --avoid=msvc-nothrow --avoid=openat-die --avoid=openat-h --avoid=raise --avoid=save-cwd --avoid=select --avoid=sigprocmask --avoid=sys_types --avoid=threadlib --makefile-name=gnulib.mk --conditional-dependencies --no-libtool --macro-prefix=gl --no-vc-files alloca-opt c-ctype c-strcase careadlinkat close-stream crypto/md5 crypto/sha1 crypto/sha256 crypto/sha512 dtoastr dtotimespec dup2 environ execinfo faccessat fcntl-h filemode getloadavg getopt-gnu gettime gettimeofday ignore-value intprops largefile lstat manywarnings mktime pselect pthread_sigmask putenv readlink sig2str socklen stat-time stdalign stdarg stdbool stdio strftime strtoimax strtoumax symlink sys_stat sys_time time timer-time timespec-add timespec-sub unsetenv utimens warnings
 
 
 MOSTLYCLEANFILES += core *.stackdump
@@ -84,6 +84,14 @@ EXTRA_DIST += careadlinkat.h
 
 ## end   gnulib module careadlinkat
 
+## begin gnulib module close-stream
+
+libgnu_a_SOURCES += close-stream.c
+
+EXTRA_DIST += close-stream.h
+
+## end   gnulib module close-stream
+
 ## begin gnulib module crypto/md5
 
 libgnu_a_SOURCES += md5.c
@@ -150,6 +158,17 @@ EXTRA_libgnu_a_SOURCES += dup2.c
 
 ## end   gnulib module dup2
 
+## begin gnulib module euidaccess
+
+if gl_GNULIB_ENABLED_euidaccess
+
+endif
+EXTRA_DIST += euidaccess.c
+
+EXTRA_libgnu_a_SOURCES += euidaccess.c
+
+## end   gnulib module euidaccess
+
 ## begin gnulib module execinfo
 
 BUILT_SOURCES += $(EXECINFO_H)
@@ -175,6 +194,50 @@ EXTRA_libgnu_a_SOURCES += execinfo.c
 
 ## end   gnulib module execinfo
 
+## begin gnulib module faccessat
+
+
+EXTRA_DIST += at-func.c faccessat.c
+
+EXTRA_libgnu_a_SOURCES += at-func.c faccessat.c
+
+## end   gnulib module faccessat
+
+## begin gnulib module fcntl-h
+
+BUILT_SOURCES += fcntl.h
+
+# We need the following in order to create <fcntl.h> when the system
+# doesn't have one that works with the given compiler.
+fcntl.h: fcntl.in.h $(top_builddir)/config.status $(CXXDEFS_H) $(ARG_NONNULL_H) $(WARN_ON_USE_H)
+        $(AM_V_GEN)rm -f $@-t $@ && \
+        { echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
+          sed -e 's|@''GUARD_PREFIX''@|GL|g' \
+              -e 's|@''INCLUDE_NEXT''@|$(INCLUDE_NEXT)|g' \
+              -e 's|@''PRAGMA_SYSTEM_HEADER''@|@PRAGMA_SYSTEM_HEADER@|g' \
+              -e 's|@''PRAGMA_COLUMNS''@|@PRAGMA_COLUMNS@|g' \
+              -e 's|@''NEXT_FCNTL_H''@|$(NEXT_FCNTL_H)|g' \
+              -e 's/@''GNULIB_FCNTL''@/$(GNULIB_FCNTL)/g' \
+              -e 's/@''GNULIB_NONBLOCKING''@/$(GNULIB_NONBLOCKING)/g' \
+              -e 's/@''GNULIB_OPEN''@/$(GNULIB_OPEN)/g' \
+              -e 's/@''GNULIB_OPENAT''@/$(GNULIB_OPENAT)/g' \
+              -e 's|@''HAVE_FCNTL''@|$(HAVE_FCNTL)|g' \
+              -e 's|@''HAVE_OPENAT''@|$(HAVE_OPENAT)|g' \
+              -e 's|@''REPLACE_FCNTL''@|$(REPLACE_FCNTL)|g' \
+              -e 's|@''REPLACE_OPEN''@|$(REPLACE_OPEN)|g' \
+              -e 's|@''REPLACE_OPENAT''@|$(REPLACE_OPENAT)|g' \
+              -e '/definitions of _GL_FUNCDECL_RPL/r $(CXXDEFS_H)' \
+              -e '/definition of _GL_ARG_NONNULL/r $(ARG_NONNULL_H)' \
+              -e '/definition of _GL_WARN_ON_USE/r $(WARN_ON_USE_H)' \
+              < $(srcdir)/fcntl.in.h; \
+        } > $@-t && \
+        mv $@-t $@
+MOSTLYCLEANFILES += fcntl.h fcntl.h-t
+
+EXTRA_DIST += fcntl.in.h
+
+## end   gnulib module fcntl-h
+
 ## begin gnulib module filemode
 
 libgnu_a_SOURCES += filemode.c
@@ -183,6 +246,26 @@ EXTRA_DIST += filemode.h
 
 ## end   gnulib module filemode
 
+## begin gnulib module fpending
+
+
+EXTRA_DIST += fpending.c fpending.h
+
+EXTRA_libgnu_a_SOURCES += fpending.c
+
+## end   gnulib module fpending
+
+## begin gnulib module getgroups
+
+if gl_GNULIB_ENABLED_getgroups
+
+endif
+EXTRA_DIST += getgroups.c
+
+EXTRA_libgnu_a_SOURCES += getgroups.c
+
+## end   gnulib module getgroups
+
 ## begin gnulib module getloadavg
 
 
@@ -242,6 +325,17 @@ EXTRA_libgnu_a_SOURCES += gettimeofday.c
 
 ## end   gnulib module gettimeofday
 
+## begin gnulib module group-member
+
+if gl_GNULIB_ENABLED_a9786850e999ae65a836a6041e8e5ed1
+
+endif
+EXTRA_DIST += group-member.c
+
+EXTRA_libgnu_a_SOURCES += group-member.c
+
+## end   gnulib module group-member
+
 ## begin gnulib module ignore-value
 
 
@@ -345,6 +439,15 @@ EXTRA_libgnu_a_SOURCES += pthread_sigmask.c
 
 ## end   gnulib module pthread_sigmask
 
+## begin gnulib module putenv
+
+
+EXTRA_DIST += putenv.c
+
+EXTRA_libgnu_a_SOURCES += putenv.c
+
+## end   gnulib module putenv
+
 ## begin gnulib module readlink
 
 
@@ -354,6 +457,24 @@ EXTRA_libgnu_a_SOURCES += readlink.c
 
 ## end   gnulib module readlink
 
+## begin gnulib module root-uid
+
+if gl_GNULIB_ENABLED_6099e9737f757db36c47fa9d9f02e88c
+
+endif
+EXTRA_DIST += root-uid.h
+
+## end   gnulib module root-uid
+
+## begin gnulib module sig2str
+
+
+EXTRA_DIST += sig2str.c sig2str.h
+
+EXTRA_libgnu_a_SOURCES += sig2str.c
+
+## end   gnulib module sig2str
+
 ## begin gnulib module signal-h
 
 BUILT_SOURCES += signal.h
@@ -653,6 +774,7 @@ EXTRA_DIST += stdint.in.h
 ## begin gnulib module stdio
 
 BUILT_SOURCES += stdio.h
+libgnu_a_SOURCES += stdio.c
 
 # We need the following in order to create <stdio.h> when the system
 # doesn't have one that works with the given compiler.
@@ -857,6 +979,7 @@ stdlib.h: stdlib.in.h $(top_builddir)/config.status $(CXXDEFS_H) \
               -e 's|@''REPLACE_MALLOC''@|$(REPLACE_MALLOC)|g' \
               -e 's|@''REPLACE_MBTOWC''@|$(REPLACE_MBTOWC)|g' \
               -e 's|@''REPLACE_MKSTEMP''@|$(REPLACE_MKSTEMP)|g' \
+              -e 's|@''REPLACE_PTSNAME''@|$(REPLACE_PTSNAME)|g' \
               -e 's|@''REPLACE_PTSNAME_R''@|$(REPLACE_PTSNAME_R)|g' \
               -e 's|@''REPLACE_PUTENV''@|$(REPLACE_PUTENV)|g' \
               -e 's|@''REPLACE_RANDOM_R''@|$(REPLACE_RANDOM_R)|g' \
@@ -1147,6 +1270,7 @@ EXTRA_DIST += u64.h
 ## begin gnulib module unistd
 
 BUILT_SOURCES += unistd.h
+libgnu_a_SOURCES += unistd.c
 
 # We need the following in order to create an empty placeholder for
 # <unistd.h> when the system doesn't have one.
@@ -1294,6 +1418,15 @@ EXTRA_DIST += unistd.in.h
 
 ## end   gnulib module unistd
 
+## begin gnulib module unsetenv
+
+
+EXTRA_DIST += unsetenv.c
+
+EXTRA_libgnu_a_SOURCES += unsetenv.c
+
+## end   gnulib module unsetenv
+
 ## begin gnulib module utimens
 
 libgnu_a_SOURCES += utimens.c
@@ -1311,6 +1444,15 @@ EXTRA_DIST += verify.h
 
 ## end   gnulib module verify
 
+## begin gnulib module xalloc-oversized
+
+if gl_GNULIB_ENABLED_682e609604ccaac6be382e4ee3a4eaec
+
+endif
+EXTRA_DIST += xalloc-oversized.h
+
+## end   gnulib module xalloc-oversized
+
 
 mostlyclean-local: mostlyclean-generic
         @for dir in '' $(MOSTLYCLEANDIRS); do \
diff --git a/lib/group-member.c b/lib/group-member.c
new file mode 100644
index 00000000000..5fcc7e01d0c
--- /dev/null
+++ b/lib/group-member.c
@@ -0,0 +1,119 @@
+/* group-member.c -- determine whether group id is in calling user's group list
+
+   Copyright (C) 1994, 1997-1998, 2003, 2005-2006, 2009-2012 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 <http://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <unistd.h>
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <stdlib.h>
+
+#include "xalloc-oversized.h"
+
+/* Most processes have no more than this many groups, and for these
+   processes we can avoid using malloc.  */
+enum { GROUPBUF_SIZE = 100 };
+
+struct group_info
+  {
+    gid_t *group;
+    gid_t groupbuf[GROUPBUF_SIZE];
+  };
+
+static void
+free_group_info (struct group_info const *g)
+{
+  if (g->group != g->groupbuf)
+    free (g->group);
+}
+
+static int
+get_group_info (struct group_info *gi)
+{
+  int n_groups = getgroups (GROUPBUF_SIZE, gi->groupbuf);
+  gi->group = gi->groupbuf;
+
+  if (n_groups < 0)
+    {
+      int n_group_slots = getgroups (0, NULL);
+      if (0 <= n_group_slots
+          && ! xalloc_oversized (n_group_slots, sizeof *gi->group))
+        {
+          gi->group = malloc (n_group_slots * sizeof *gi->group);
+          if (gi->group)
+            n_groups = getgroups (n_group_slots, gi->group);
+        }
+    }
+
+  /* In case of error, the user loses.  */
+  return n_groups;
+}
+
+/* Return non-zero if GID is one that we have in our groups list.
+   Note that the groups list is not guaranteed to contain the current
+   or effective group ID, so they should generally be checked
+   separately.  */
+
+int
+group_member (gid_t gid)
+{
+  int i;
+  int found;
+  struct group_info gi;
+  int n_groups = get_group_info (&gi);
+
+  /* Search through the list looking for GID. */
+  found = 0;
+  for (i = 0; i < n_groups; i++)
+    {
+      if (gid == gi.group[i])
+        {
+          found = 1;
+          break;
+        }
+    }
+
+  free_group_info (&gi);
+
+  return found;
+}
+
+#ifdef TEST
+
+char *program_name;
+
+int
+main (int argc, char **argv)
+{
+  int i;
+
+  program_name = argv[0];
+
+  for (i = 1; i < argc; i++)
+    {
+      gid_t gid;
+
+      gid = atoi (argv[i]);
+      printf ("%d: %s\n", gid, group_member (gid) ? "yes" : "no");
+    }
+  exit (0);
+}
+
+#endif /* TEST */
diff --git a/lib/lstat.c b/lib/lstat.c
index db119a10d3f..97fe6bb2d53 100644
--- a/lib/lstat.c
+++ b/lib/lstat.c
@@ -35,7 +35,7 @@ typedef int dummy;
 # include <sys/stat.h>
 # undef __need_system_sys_stat_h
 
-static inline int
+static int
 orig_lstat (const char *filename, struct stat *buf)
 {
   return lstat (filename, buf);
diff --git a/lib/makefile.w32-in b/lib/makefile.w32-in
index f0cea56f829..1482d686acb 100644
--- a/lib/makefile.w32-in
+++ b/lib/makefile.w32-in
@@ -26,9 +26,11 @@ LIBS 		=
 GNULIBOBJS = $(BLD)/c-ctype.$(O) \
              $(BLD)/c-strcasecmp.$(O) \
              $(BLD)/c-strncasecmp.$(O) \
+             $(BLD)/close-stream.$(O) \
              $(BLD)/dtoastr.$(O) \
              $(BLD)/dtotimespec.$(O)  \
              $(BLD)/execinfo.$(O)  \
+             $(BLD)/fpending.$(O)  \
              $(BLD)/getopt.$(O)  \
              $(BLD)/getopt1.$(O) \
              $(BLD)/gettime.$(O) \
@@ -40,6 +42,7 @@ GNULIBOBJS = $(BLD)/c-ctype.$(O) \
              $(BLD)/sha1.$(O) \
              $(BLD)/sha256.$(O) \
              $(BLD)/sha512.$(O) \
+             $(BLD)/sig2str.$(O) \
              $(BLD)/stat-time.$(O) \
              $(BLD)/timespec.$(O) \
              $(BLD)/u64.$(O) \
@@ -100,6 +103,8 @@ U64_H          = $(GNU_LIB)/u64.h \
                  $(NT_INC)/stdint.h
 SHA512_H       = $(GNU_LIB)/sha512.h \
                  $(U64_H)
+SIG2STR_H      = $(GNU_LIB)/sig2str.h \
+                 $(GNU_LIB)/intprops.h
 STAT_TIME_H    = $(GNU_LIB)/stat-time.h \
                  $(NT_INC)/sys/stat.h
 
@@ -120,6 +125,13 @@ $(BLD)/c-strncasecmp.$(O) : \
         $(CONFIG_H) \
         $(C_CTYPE_H)
 
+$(BLD)/close-stream.$(O) : \
+        $(GNU_LIB)/close-stream.c \
+        $(GNU_LIB)/close-stream.h \
+        $(GNU_LIB)/fpending.h \
+        $(NT_INC)/stdbool.h \
+        $(CONFIG_H)
+
 $(BLD)/dtoastr.$(O) : \
         $(GNU_LIB)/dtoastr.c \
         $(FTOASTR_C)
@@ -135,6 +147,11 @@ $(BLD)/execinfo.$(O) : \
         $(GNU_LIB)/execinfo.h \
         $(CONFIG_H)
 
+$(BLD)/fpending.$(O) : \
+        $(GNU_LIB)/fpending.c \
+        $(GNU_LIB)/fpending.h \
+        $(CONFIG_H)
+
 $(BLD)/getopt.$(O) : \
         $(GNU_LIB)/getopt.c \
         $(GNU_LIB)/getopt.h \
@@ -225,6 +242,12 @@ $(BLD)/filemode.$(O) : \
         $(CONFIG_H) \
         $(FILEMODE_H)
 
+$(BLD)/sig2str.$(O) : \
+        $(GNU_LIB)/sig2str.c \
+        $(CONFIG_H) \
+        $(SIG2STR_H)
+
+
 # The following dependencies are for supporting parallel builds, where
 # we must make sure $(BLD) exists before any compilation starts.
 #
@@ -308,4 +331,3 @@ getopt_h:
 
 execinfo.h: execinfo.in.h
         $(CP) execinfo.in.h $@
-
diff --git a/lib/md5.c b/lib/md5.c
index 30b7e50e3ae..6e6d61270dd 100644
--- a/lib/md5.c
+++ b/lib/md5.c
@@ -83,7 +83,7 @@ md5_init_ctx (struct md5_ctx *ctx)
 /* Copy the 4 byte value from v into the memory location pointed to by *cp,
    If your architecture allows unaligned access this is equivalent to
    * (uint32_t *) cp = v  */
-static inline void
+static void
 set_uint32 (char *cp, uint32_t v)
 {
   memcpy (cp, &v, sizeof v);
diff --git a/lib/pselect.c b/lib/pselect.c
index d8ebc70f6c6..1b6d099dccf 100644
--- a/lib/pselect.c
+++ b/lib/pselect.c
@@ -33,6 +33,8 @@
    pointer parameter stands for no descriptors, an infinite timeout,
    or an unaffected signal mask.  */
 
+#if !HAVE_PSELECT
+
 int
 pselect (int nfds, fd_set *restrict rfds,
          fd_set *restrict wfds, fd_set *restrict xfds,
@@ -74,3 +76,35 @@ pselect (int nfds, fd_set *restrict rfds,
 
   return select_result;
 }
+
+#else /* HAVE_PSELECT */
+# include <unistd.h>
+# undef pselect
+
+int
+rpl_pselect (int nfds, fd_set *restrict rfds,
+             fd_set *restrict wfds, fd_set *restrict xfds,
+             struct timespec const *restrict timeout,
+             sigset_t const *restrict sigmask)
+{
+  int i;
+
+  /* FreeBSD 8.2 has a bug: it does not always detect invalid fds.  */
+  if (nfds < 0 || nfds > FD_SETSIZE)
+    {
+      errno = EINVAL;
+      return -1;
+    }
+  for (i = 0; i < nfds; i++)
+    {
+      if (((rfds && FD_ISSET (i, rfds))
+           || (wfds && FD_ISSET (i, wfds))
+           || (xfds && FD_ISSET (i, xfds)))
+          && dup2 (i, i) != i)
+        return -1;
+    }
+
+  return pselect (nfds, rfds, wfds, xfds, timeout, sigmask);
+}
+
+#endif
diff --git a/lib/putenv.c b/lib/putenv.c
new file mode 100644
index 00000000000..3c0f7ead330
--- /dev/null
+++ b/lib/putenv.c
@@ -0,0 +1,134 @@
+/* Copyright (C) 1991, 1994, 1997-1998, 2000, 2003-2012 Free Software
+   Foundation, Inc.
+
+   NOTE: The canonical source of this file is maintained with the GNU C
+   Library.  Bugs can be reported to bug-glibc@prep.ai.mit.edu.
+
+   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 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 <http://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <stdlib.h>
+
+#include <stddef.h>
+
+/* Include errno.h *after* sys/types.h to work around header problems
+   on AIX 3.2.5.  */
+#include <errno.h>
+#ifndef __set_errno
+# define __set_errno(ev) ((errno) = (ev))
+#endif
+
+#include <string.h>
+#include <unistd.h>
+
+#if _LIBC
+# if HAVE_GNU_LD
+#  define environ __environ
+# else
+extern char **environ;
+# endif
+#endif
+
+#if _LIBC
+/* This lock protects against simultaneous modifications of 'environ'.  */
+# include <bits/libc-lock.h>
+__libc_lock_define_initialized (static, envlock)
+# define LOCK   __libc_lock_lock (envlock)
+# define UNLOCK __libc_lock_unlock (envlock)
+#else
+# define LOCK
+# define UNLOCK
+#endif
+
+static int
+_unsetenv (const char *name)
+{
+  size_t len;
+  char **ep;
+
+  if (name == NULL || *name == '\0' || strchr (name, '=') != NULL)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  len = strlen (name);
+
+  LOCK;
+
+  ep = environ;
+  while (*ep != NULL)
+    if (!strncmp (*ep, name, len) && (*ep)[len] == '=')
+      {
+        /* Found it.  Remove this pointer by moving later ones back.  */
+        char **dp = ep;
+
+        do
+          dp[0] = dp[1];
+        while (*dp++);
+        /* Continue the loop in case NAME appears again.  */
+      }
+    else
+      ++ep;
+
+  UNLOCK;
+
+  return 0;
+}
+
+
+/* Put STRING, which is of the form "NAME=VALUE", in the environment.
+   If STRING contains no '=', then remove STRING from the environment.  */
+int
+putenv (char *string)
+{
+  const char *const name_end = strchr (string, '=');
+  register size_t size;
+  register char **ep;
+
+  if (name_end == NULL)
+    {
+      /* Remove the variable from the environment.  */
+      return _unsetenv (string);
+    }
+
+  size = 0;
+  for (ep = environ; *ep != NULL; ++ep)
+    if (!strncmp (*ep, string, name_end - string) &&
+        (*ep)[name_end - string] == '=')
+      break;
+    else
+      ++size;
+
+  if (*ep == NULL)
+    {
+      static char **last_environ = NULL;
+      char **new_environ = (char **) malloc ((size + 2) * sizeof (char *));
+      if (new_environ == NULL)
+        return -1;
+      (void) memcpy ((void *) new_environ, (void *) environ,
+                     size * sizeof (char *));
+      new_environ[size] = (char *) string;
+      new_environ[size + 1] = NULL;
+      free (last_environ);
+      last_environ = new_environ;
+      environ = new_environ;
+    }
+  else
+    *ep = string;
+
+  return 0;
+}
diff --git a/lib/root-uid.h b/lib/root-uid.h
new file mode 100644
index 00000000000..2379773c291
--- /dev/null
+++ b/lib/root-uid.h
@@ -0,0 +1,30 @@
+/* The user ID that always has appropriate privileges in the POSIX sense.
+
+   Copyright 2012 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 <http://www.gnu.org/licenses/>.
+
+   Written by Paul Eggert.  */
+
+#ifndef ROOT_UID_H_
+#define ROOT_UID_H_
+
+/* The user ID that always has appropriate privileges in the POSIX sense.  */
+#ifdef __TANDEM
+# define ROOT_UID 65535
+#else
+# define ROOT_UID 0
+#endif
+
+#endif
diff --git a/lib/sha1.c b/lib/sha1.c
index 0d82af14bc9..b9505dd9467 100644
--- a/lib/sha1.c
+++ b/lib/sha1.c
@@ -70,7 +70,7 @@ sha1_init_ctx (struct sha1_ctx *ctx)
 /* Copy the 4 byte value from v into the memory location pointed to by *cp,
    If your architecture allows unaligned access this is equivalent to
    * (uint32_t *) cp = v  */
-static inline void
+static void
 set_uint32 (char *cp, uint32_t v)
 {
   memcpy (cp, &v, sizeof v);
diff --git a/lib/sha256.c b/lib/sha256.c
index a8d29da18dd..55273c6a3bc 100644
--- a/lib/sha256.c
+++ b/lib/sha256.c
@@ -90,7 +90,7 @@ sha224_init_ctx (struct sha256_ctx *ctx)
 /* Copy the value from v into the memory location pointed to by *cp,
    If your architecture allows unaligned access this is equivalent to
    * (uint32_t *) cp = v  */
-static inline void
+static void
 set_uint32 (char *cp, uint32_t v)
 {
   memcpy (cp, &v, sizeof v);
diff --git a/lib/sha512.c b/lib/sha512.c
index cf62f2034e5..dfb67a305d8 100644
--- a/lib/sha512.c
+++ b/lib/sha512.c
@@ -97,7 +97,7 @@ sha384_init_ctx (struct sha512_ctx *ctx)
 /* Copy the value from V into the memory location pointed to by *CP,
    If your architecture allows unaligned access, this is equivalent to
    * (__typeof__ (v) *) cp = v  */
-static inline void
+static void
 set_uint64 (char *cp, u64 v)
 {
   memcpy (cp, &v, sizeof v);
diff --git a/lib/sig2str.c b/lib/sig2str.c
new file mode 100644
index 00000000000..2f5b21cc36f
--- /dev/null
+++ b/lib/sig2str.c
@@ -0,0 +1,345 @@
+/* sig2str.c -- convert between signal names and numbers
+
+   Copyright (C) 2002, 2004, 2006, 2009-2012 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 <http://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert.  */
+
+#include <config.h>
+
+#include <limits.h>
+#include <signal.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "sig2str.h"
+
+#ifndef SIGRTMIN
+# define SIGRTMIN 0
+# undef SIGRTMAX
+#endif
+#ifndef SIGRTMAX
+# define SIGRTMAX (SIGRTMIN - 1)
+#endif
+
+#define NUMNAME(name) { SIG##name, #name }
+
+/* Signal names and numbers.  Put the preferred name first.  */
+static struct numname { int num; char const name[8]; } numname_table[] =
+  {
+    /* Signals required by POSIX 1003.1-2001 base, listed in
+       traditional numeric order where possible.  */
+#ifdef SIGHUP
+    NUMNAME (HUP),
+#endif
+#ifdef SIGINT
+    NUMNAME (INT),
+#endif
+#ifdef SIGQUIT
+    NUMNAME (QUIT),
+#endif
+#ifdef SIGILL
+    NUMNAME (ILL),
+#endif
+#ifdef SIGTRAP
+    NUMNAME (TRAP),
+#endif
+#ifdef SIGABRT
+    NUMNAME (ABRT),
+#endif
+#ifdef SIGFPE
+    NUMNAME (FPE),
+#endif
+#ifdef SIGKILL
+    NUMNAME (KILL),
+#endif
+#ifdef SIGSEGV
+    NUMNAME (SEGV),
+#endif
+    /* On Haiku, SIGSEGV == SIGBUS, but we prefer SIGSEGV to match
+       strsignal.c output, so SIGBUS must be listed second.  */
+#ifdef SIGBUS
+    NUMNAME (BUS),
+#endif
+#ifdef SIGPIPE
+    NUMNAME (PIPE),
+#endif
+#ifdef SIGALRM
+    NUMNAME (ALRM),
+#endif
+#ifdef SIGTERM
+    NUMNAME (TERM),
+#endif
+#ifdef SIGUSR1
+    NUMNAME (USR1),
+#endif
+#ifdef SIGUSR2
+    NUMNAME (USR2),
+#endif
+#ifdef SIGCHLD
+    NUMNAME (CHLD),
+#endif
+#ifdef SIGURG
+    NUMNAME (URG),
+#endif
+#ifdef SIGSTOP
+    NUMNAME (STOP),
+#endif
+#ifdef SIGTSTP
+    NUMNAME (TSTP),
+#endif
+#ifdef SIGCONT
+    NUMNAME (CONT),
+#endif
+#ifdef SIGTTIN
+    NUMNAME (TTIN),
+#endif
+#ifdef SIGTTOU
+    NUMNAME (TTOU),
+#endif
+
+    /* Signals required by POSIX 1003.1-2001 with the XSI extension.  */
+#ifdef SIGSYS
+    NUMNAME (SYS),
+#endif
+#ifdef SIGPOLL
+    NUMNAME (POLL),
+#endif
+#ifdef SIGVTALRM
+    NUMNAME (VTALRM),
+#endif
+#ifdef SIGPROF
+    NUMNAME (PROF),
+#endif
+#ifdef SIGXCPU
+    NUMNAME (XCPU),
+#endif
+#ifdef SIGXFSZ
+    NUMNAME (XFSZ),
+#endif
+
+    /* Unix Version 7.  */
+#ifdef SIGIOT
+    NUMNAME (IOT),      /* Older name for ABRT.  */
+#endif
+#ifdef SIGEMT
+    NUMNAME (EMT),
+#endif
+
+    /* USG Unix.  */
+#ifdef SIGPHONE
+    NUMNAME (PHONE),
+#endif
+#ifdef SIGWIND
+    NUMNAME (WIND),
+#endif
+
+    /* Unix System V.  */
+#ifdef SIGCLD
+    NUMNAME (CLD),
+#endif
+#ifdef SIGPWR
+    NUMNAME (PWR),
+#endif
+
+    /* GNU/Linux 2.2 and Solaris 8.  */
+#ifdef SIGCANCEL
+    NUMNAME (CANCEL),
+#endif
+#ifdef SIGLWP
+    NUMNAME (LWP),
+#endif
+#ifdef SIGWAITING
+    NUMNAME (WAITING),
+#endif
+#ifdef SIGFREEZE
+    NUMNAME (FREEZE),
+#endif
+#ifdef SIGTHAW
+    NUMNAME (THAW),
+#endif
+#ifdef SIGLOST
+    NUMNAME (LOST),
+#endif
+#ifdef SIGWINCH
+    NUMNAME (WINCH),
+#endif
+
+    /* GNU/Linux 2.2.  */
+#ifdef SIGINFO
+    NUMNAME (INFO),
+#endif
+#ifdef SIGIO
+    NUMNAME (IO),
+#endif
+#ifdef SIGSTKFLT
+    NUMNAME (STKFLT),
+#endif
+
+    /* AIX 5L.  */
+#ifdef SIGDANGER
+    NUMNAME (DANGER),
+#endif
+#ifdef SIGGRANT
+    NUMNAME (GRANT),
+#endif
+#ifdef SIGMIGRATE
+    NUMNAME (MIGRATE),
+#endif
+#ifdef SIGMSG
+    NUMNAME (MSG),
+#endif
+#ifdef SIGPRE
+    NUMNAME (PRE),
+#endif
+#ifdef SIGRETRACT
+    NUMNAME (RETRACT),
+#endif
+#ifdef SIGSAK
+    NUMNAME (SAK),
+#endif
+#ifdef SIGSOUND
+    NUMNAME (SOUND),
+#endif
+
+    /* Older AIX versions.  */
+#ifdef SIGALRM1
+    NUMNAME (ALRM1),    /* unknown; taken from Bash 2.05 */
+#endif
+#ifdef SIGKAP
+    NUMNAME (KAP),      /* Older name for SIGGRANT.  */
+#endif
+#ifdef SIGVIRT
+    NUMNAME (VIRT),     /* unknown; taken from Bash 2.05 */
+#endif
+#ifdef SIGWINDOW
+    NUMNAME (WINDOW),   /* Older name for SIGWINCH.  */
+#endif
+
+    /* BeOS */
+#ifdef SIGKILLTHR
+    NUMNAME (KILLTHR),
+#endif
+
+    /* Older HP-UX versions.  */
+#ifdef SIGDIL
+    NUMNAME (DIL),
+#endif
+
+    /* Korn shell and Bash, of uncertain vintage.  */
+    { 0, "EXIT" }
+  };
+
+#define NUMNAME_ENTRIES (sizeof numname_table / sizeof numname_table[0])
+
+/* ISDIGIT differs from isdigit, as follows:
+   - Its arg may be any int or unsigned int; it need not be an unsigned char
+     or EOF.
+   - It's typically faster.
+   POSIX says that only '0' through '9' are digits.  Prefer ISDIGIT to
+   isdigit unless it's important to use the locale's definition
+   of "digit" even when the host does not conform to POSIX.  */
+#define ISDIGIT(c) ((unsigned int) (c) - '0' <= 9)
+
+/* Convert the signal name SIGNAME to a signal number.  Return the
+   signal number if successful, -1 otherwise.  */
+
+static int
+str2signum (char const *signame)
+{
+  if (ISDIGIT (*signame))
+    {
+      char *endp;
+      long int n = strtol (signame, &endp, 10);
+      if (! *endp && n <= SIGNUM_BOUND)
+        return n;
+    }
+  else
+    {
+      unsigned int i;
+      for (i = 0; i < NUMNAME_ENTRIES; i++)
+        if (strcmp (numname_table[i].name, signame) == 0)
+          return numname_table[i].num;
+
+      {
+        char *endp;
+        int rtmin = SIGRTMIN;
+        int rtmax = SIGRTMAX;
+
+        if (0 < rtmin && strncmp (signame, "RTMIN", 5) == 0)
+          {
+            long int n = strtol (signame + 5, &endp, 10);
+            if (! *endp && 0 <= n && n <= rtmax - rtmin)
+              return rtmin + n;
+          }
+        else if (0 < rtmax && strncmp (signame, "RTMAX", 5) == 0)
+          {
+            long int n = strtol (signame + 5, &endp, 10);
+            if (! *endp && rtmin - rtmax <= n && n <= 0)
+              return rtmax + n;
+          }
+      }
+    }
+
+  return -1;
+}
+
+/* Convert the signal name SIGNAME to the signal number *SIGNUM.
+   Return 0 if successful, -1 otherwise.  */
+
+int
+str2sig (char const *signame, int *signum)
+{
+  *signum = str2signum (signame);
+  return *signum < 0 ? -1 : 0;
+}
+
+/* Convert SIGNUM to a signal name in SIGNAME.  SIGNAME must point to
+   a buffer of at least SIG2STR_MAX bytes.  Return 0 if successful, -1
+   otherwise.  */
+
+int
+sig2str (int signum, char *signame)
+{
+  unsigned int i;
+  for (i = 0; i < NUMNAME_ENTRIES; i++)
+    if (numname_table[i].num == signum)
+      {
+        strcpy (signame, numname_table[i].name);
+        return 0;
+      }
+
+  {
+    int rtmin = SIGRTMIN;
+    int rtmax = SIGRTMAX;
+
+    if (! (rtmin <= signum && signum <= rtmax))
+      return -1;
+
+    if (signum <= rtmin + (rtmax - rtmin) / 2)
+      {
+        int delta = signum - rtmin;
+        sprintf (signame, delta ? "RTMIN+%d" : "RTMIN", delta);
+      }
+    else
+      {
+        int delta = rtmax - signum;
+        sprintf (signame, delta ? "RTMAX-%d" : "RTMAX", delta);
+      }
+
+    return 0;
+  }
+}
diff --git a/lib/sig2str.h b/lib/sig2str.h
new file mode 100644
index 00000000000..75eff7d7c1a
--- /dev/null
+++ b/lib/sig2str.h
@@ -0,0 +1,43 @@
+/* sig2str.h -- convert between signal names and numbers
+
+   Copyright (C) 2002, 2005, 2009-2012 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 <http://www.gnu.org/licenses/>.  */
+
+/* Written by Paul Eggert.  */
+
+#include <signal.h>
+
+/* Don't override system declarations of SIG2STR_MAX, sig2str, str2sig.  */
+#ifndef SIG2STR_MAX
+
+# include "intprops.h"
+
+/* Size of a buffer needed to hold a signal name like "HUP".  */
+# define SIG2STR_MAX (sizeof "SIGRTMAX" + INT_STRLEN_BOUND (int) - 1)
+
+int sig2str (int, char *);
+int str2sig (char const *, int *);
+
+#endif
+
+/* An upper bound on signal numbers allowed by the system.  */
+
+#if defined _sys_nsig
+# define SIGNUM_BOUND (_sys_nsig - 1)
+#elif defined NSIG
+# define SIGNUM_BOUND (NSIG - 1)
+#else
+# define SIGNUM_BOUND 64
+#endif
diff --git a/lib/stat.c b/lib/stat.c
index 75995408906..c0bcb88320f 100644
--- a/lib/stat.c
+++ b/lib/stat.c
@@ -42,7 +42,7 @@
 # endif
 #endif
 
-static inline int
+static int
 orig_stat (const char *filename, struct stat *buf)
 {
   return stat (filename, buf);
diff --git a/lib/stdio.c b/lib/stdio.c
new file mode 100644
index 00000000000..e6ed82996b7
--- /dev/null
+++ b/lib/stdio.c
@@ -0,0 +1,3 @@
+#include <config.h>
+#define _GL_STDIO_INLINE _GL_EXTERN_INLINE
+#include "stdio.h"
diff --git a/lib/stdio.in.h b/lib/stdio.in.h
index b1b543dee72..f3b52d28f6b 100644
--- a/lib/stdio.in.h
+++ b/lib/stdio.in.h
@@ -46,6 +46,11 @@
 #ifndef _@GUARD_PREFIX@_STDIO_H
 #define _@GUARD_PREFIX@_STDIO_H
 
+_GL_INLINE_HEADER_BEGIN
+#ifndef _GL_STDIO_INLINE
+# define _GL_STDIO_INLINE _GL_INLINE
+#endif
+
 /* Get va_list.  Needed on many systems, including glibc 2.8.  */
 #include <stdarg.h>
 
@@ -581,7 +586,7 @@ _GL_CXXALIAS_SYS (fwrite, size_t,
    This affects only function declaration attributes, so it's not
    needed for C++.  */
 #  if !defined __cplusplus && 0 < __USE_FORTIFY_LEVEL
-static inline size_t _GL_ARG_NONNULL ((1, 4))
+_GL_STDIO_INLINE size_t _GL_ARG_NONNULL ((1, 4))
 rpl_fwrite (const void *ptr, size_t s, size_t n, FILE *stream)
 {
   size_t r = fwrite (ptr, s, n, stream);
@@ -1333,6 +1338,7 @@ _GL_WARN_ON_USE (vsprintf, "vsprintf is not always POSIX compliant - "
                       "POSIX compliance");
 #endif
 
+_GL_INLINE_HEADER_END
 
 #endif /* _@GUARD_PREFIX@_STDIO_H */
 #endif /* _@GUARD_PREFIX@_STDIO_H */
diff --git a/lib/stdlib.in.h b/lib/stdlib.in.h
index 1d67ec64c66..65558402bf3 100644
--- a/lib/stdlib.in.h
+++ b/lib/stdlib.in.h
@@ -457,10 +457,19 @@ _GL_WARN_ON_USE (posix_openpt, "posix_openpt is not portable - "
 #if @GNULIB_PTSNAME@
 /* Return the pathname of the pseudo-terminal slave associated with
    the master FD is open on, or NULL on errors.  */
-# if !@HAVE_PTSNAME@
+# if @REPLACE_PTSNAME@
+#  if !(defined __cplusplus && defined GNULIB_NAMESPACE)
+#   undef ptsname
+#   define ptsname rpl_ptsname
+#  endif
+_GL_FUNCDECL_RPL (ptsname, char *, (int fd));
+_GL_CXXALIAS_RPL (ptsname, char *, (int fd));
+# else
+#  if !@HAVE_PTSNAME@
 _GL_FUNCDECL_SYS (ptsname, char *, (int fd));
-# endif
+#  endif
 _GL_CXXALIAS_SYS (ptsname, char *, (int fd));
+# endif
 _GL_CXXALIASWARN (ptsname);
 #elif defined GNULIB_POSIXCHECK
 # undef ptsname
diff --git a/lib/sys_stat.in.h b/lib/sys_stat.in.h
index 2efc1e92e06..ac05ddb5cec 100644
--- a/lib/sys_stat.in.h
+++ b/lib/sys_stat.in.h
@@ -497,7 +497,7 @@ _GL_CXXALIAS_RPL (mkdir, int, (char const *name, mode_t mode));
 # if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
 
 #  if !GNULIB_defined_rpl_mkdir
-static inline int
+static int
 rpl_mkdir (char const *name, mode_t mode)
 {
   return _mkdir (name);
diff --git a/lib/unistd.c b/lib/unistd.c
new file mode 100644
index 00000000000..6c6a8e268c0
--- /dev/null
+++ b/lib/unistd.c
@@ -0,0 +1,3 @@
+#include <config.h>
+#define _GL_UNISTD_INLINE _GL_EXTERN_INLINE
+#include "unistd.h"
diff --git a/lib/unistd.in.h b/lib/unistd.in.h
index e904e512ee8..6171f77ac71 100644
--- a/lib/unistd.in.h
+++ b/lib/unistd.in.h
@@ -127,6 +127,11 @@
 # include <getopt.h>
 #endif
 
+_GL_INLINE_HEADER_BEGIN
+#ifndef _GL_UNISTD_INLINE
+# define _GL_UNISTD_INLINE _GL_INLINE
+#endif
+
 /* The definitions of _GL_FUNCDECL_RPL etc. are copied here.  */
 
 /* The definition of _GL_ARG_NONNULL is copied here.  */
@@ -404,7 +409,7 @@ extern char **environ;
 # endif
 #elif defined GNULIB_POSIXCHECK
 # if HAVE_RAW_DECL_ENVIRON
-static inline char ***
+_GL_UNISTD_INLINE char ***
 rpl_environ (void)
 {
   return &environ;
@@ -862,7 +867,7 @@ _GL_CXXALIAS_RPL (getpagesize, int, (void));
 #     define getpagesize() _gl_getpagesize ()
 #    else
 #     if !GNULIB_defined_getpagesize_function
-static inline int
+_GL_UNISTD_INLINE int
 getpagesize ()
 {
   return _gl_getpagesize ();
@@ -1530,6 +1535,7 @@ _GL_CXXALIAS_SYS_CAST (write, ssize_t, (int fd, const void *buf, size_t count));
 _GL_CXXALIASWARN (write);
 #endif
 
+_GL_INLINE_HEADER_END
 
 #endif /* _@GUARD_PREFIX@_UNISTD_H */
 #endif /* _@GUARD_PREFIX@_UNISTD_H */
diff --git a/lib/unsetenv.c b/lib/unsetenv.c
new file mode 100644
index 00000000000..ddbe9a4d293
--- /dev/null
+++ b/lib/unsetenv.c
@@ -0,0 +1,127 @@
+/* Copyright (C) 1992, 1995-2002, 2005-2012 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   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 <http://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Don't use __attribute__ __nonnull__ in this compilation unit.  Otherwise gcc
+   optimizes away the name == NULL test below.  */
+#define _GL_ARG_NONNULL(params)
+
+/* Specification.  */
+#include <stdlib.h>
+
+#include <errno.h>
+#if !_LIBC
+# define __set_errno(ev) ((errno) = (ev))
+#endif
+
+#include <string.h>
+#include <unistd.h>
+
+#if !_LIBC
+# define __environ      environ
+#endif
+
+#if _LIBC
+/* This lock protects against simultaneous modifications of 'environ'.  */
+# include <bits/libc-lock.h>
+__libc_lock_define_initialized (static, envlock)
+# define LOCK   __libc_lock_lock (envlock)
+# define UNLOCK __libc_lock_unlock (envlock)
+#else
+# define LOCK
+# define UNLOCK
+#endif
+
+/* In the GNU C library we must keep the namespace clean.  */
+#ifdef _LIBC
+# define unsetenv __unsetenv
+#endif
+
+#if _LIBC || !HAVE_UNSETENV
+
+int
+unsetenv (const char *name)
+{
+  size_t len;
+  char **ep;
+
+  if (name == NULL || *name == '\0' || strchr (name, '=') != NULL)
+    {
+      __set_errno (EINVAL);
+      return -1;
+    }
+
+  len = strlen (name);
+
+  LOCK;
+
+  ep = __environ;
+  while (*ep != NULL)
+    if (!strncmp (*ep, name, len) && (*ep)[len] == '=')
+      {
+        /* Found it.  Remove this pointer by moving later ones back.  */
+        char **dp = ep;
+
+        do
+          dp[0] = dp[1];
+        while (*dp++);
+        /* Continue the loop in case NAME appears again.  */
+      }
+    else
+      ++ep;
+
+  UNLOCK;
+
+  return 0;
+}
+
+#ifdef _LIBC
+# undef unsetenv
+weak_alias (__unsetenv, unsetenv)
+#endif
+
+#else /* HAVE_UNSETENV */
+
+# undef unsetenv
+# if !HAVE_DECL_UNSETENV
+#  if VOID_UNSETENV
+extern void unsetenv (const char *);
+#  else
+extern int unsetenv (const char *);
+#  endif
+# endif
+
+/* Call the underlying unsetenv, in case there is hidden bookkeeping
+   that needs updating beyond just modifying environ.  */
+int
+rpl_unsetenv (const char *name)
+{
+  int result = 0;
+  if (!name || !*name || strchr (name, '='))
+    {
+      errno = EINVAL;
+      return -1;
+    }
+  while (getenv (name))
+# if !VOID_UNSETENV
+    result =
+# endif
+      unsetenv (name);
+  return result;
+}
+
+#endif /* HAVE_UNSETENV */
diff --git a/lib/xalloc-oversized.h b/lib/xalloc-oversized.h
new file mode 100644
index 00000000000..ad777d8dd79
--- /dev/null
+++ b/lib/xalloc-oversized.h
@@ -0,0 +1,38 @@
+/* xalloc-oversized.h -- memory allocation size checking
+
+   Copyright (C) 1990-2000, 2003-2004, 2006-2012 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 <http://www.gnu.org/licenses/>.  */
+
+#ifndef XALLOC_OVERSIZED_H_
+# define XALLOC_OVERSIZED_H_
+
+# include <stddef.h>
+
+/* Return 1 if an array of N objects, each of size S, cannot exist due
+   to size arithmetic overflow.  S must be positive and N must be
+   nonnegative.  This is a macro, not a function, so that it
+   works correctly even when SIZE_MAX < N.
+
+   By gnulib convention, SIZE_MAX represents overflow in size
+   calculations, so the conservative dividend to use here is
+   SIZE_MAX - 1, since SIZE_MAX might represent an overflowed value.
+   However, malloc (SIZE_MAX) fails on all known hosts where
+   sizeof (ptrdiff_t) <= sizeof (size_t), so do not bother to test for
+   exactly-SIZE_MAX allocations on such hosts; this avoids a test and
+   branch when S is known to be 1.  */
+# define xalloc_oversized(n, s) \
+    ((size_t) (sizeof (ptrdiff_t) <= sizeof (size_t) ? -1 : -2) / (s) < (n))
+
+#endif /* !XALLOC_OVERSIZED_H_ */