initial import

43 files changed, 3260 insertions, 0 deletions

diff --git a/sysdeps/posix/Dist b/sysdeps/posix/Dist
new file mode 100644
index 0000000000..d003c6e781
--- /dev/null
+++ b/sysdeps/posix/Dist
@@ -0,0 +1 @@
+mk-stdiolim.c
diff --git a/sysdeps/posix/Makefile b/sysdeps/posix/Makefile
new file mode 100644
index 0000000000..fd1b3f257a
--- /dev/null
+++ b/sysdeps/posix/Makefile
@@ -0,0 +1,40 @@
+# Copyright (C) 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
+# This file is part of the GNU C Library.
+
+# The GNU C Library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Library General Public License as
+# published by the Free Software Foundation; either version 2 of the
+# License, or (at your option) any later version.
+
+# The GNU C Library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Library General Public License for more details.
+
+# You should have received a copy of the GNU Library General Public
+# License along with the GNU C Library; see the file COPYING.LIB.  If
+# not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+# Cambridge, MA 02139, USA.
+
+$(common-objpfx)stdio_lim.h: $(common-objpfx)mk-stdiolim
+	$(dir $<)$(notdir $<) > $@-t
+	mv $@-t $@
+
+ifdef subdir
+objdir-CPPFLAGS = $(CPPFLAGS) # Already has appropriate `..'s.
+else
+objdir-CPPFLAGS = $(patsubst -I/..//%,-I/%,$(CPPFLAGS:-I%=-I../%))
+endif
+# Turn into a version that works when cd'd into $(objdir).
+cded-objdir-CPPFLAGS = $(patsubst -I$$cwd//%,-I/%,\
+				  $(patsubst -I%,-I$$cwd/%,$(CPPFLAGS)))
+# $(BUILD_CFLAGS) needs to come last because it contains unwanted -Is.
+$(common-objpfx)mk-stdiolim: $(sysdep_dir)/posix/mk-stdiolim.c \
+			     posix1_lim.h local_lim.h
+	cwd=`pwd`; cd $(common-objdir); \
+	$(BUILD_CC) $(cded-objdir-CPPFLAGS) $(BUILD_CFLAGS) \
+	  $$cwd/$< -o $(patsubst $(common-objpfx)%,%,$@)
+
+
+common-generated := $(common-generated) stdio_lim.h mk-stdiolim
+before-compile := $(before-compile) $(common-objpfx)stdio_lim.h
diff --git a/sysdeps/posix/clock.c b/sysdeps/posix/clock.c
new file mode 100644
index 0000000000..c34593b9eb
--- /dev/null
+++ b/sysdeps/posix/clock.c
@@ -0,0 +1,33 @@
+/* Copyright (C) 1991, 1992 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <sys/times.h>
+#include <time.h>
+
+/* Return the time used by the program so far (user time + system time).  */
+clock_t
+DEFUN_VOID(clock)
+{
+  struct tms buf;
+
+  if (__times(&buf) < 0)
+    return (clock_t) -1;
+
+  return ((buf.tms_utime + buf.tms_stime) * CLK_TCK * CLOCKS_PER_SEC);
+}
diff --git a/sysdeps/posix/ctermid.c b/sysdeps/posix/ctermid.c
new file mode 100644
index 0000000000..8e96694841
--- /dev/null
+++ b/sysdeps/posix/ctermid.c
@@ -0,0 +1,39 @@
+/* Copyright (C) 1991 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <stdio.h>
+#include <string.h>
+
+
+/* Return the name of the controlling terminal.
+   If S is not NULL, the name is copied into it (it should be at
+   least L_ctermid bytes long), otherwise a static buffer is used.  */
+char *
+DEFUN(ctermid, (s), char *s)
+{
+  static char name[L_ctermid];
+
+  if (name[0] == '\0')
+    (void) strcpy(name, "/dev/tty");
+
+  if (s == NULL)
+    return(name);
+
+  return(strcpy(s, name));
+}
diff --git a/sysdeps/posix/cuserid.c b/sysdeps/posix/cuserid.c
new file mode 100644
index 0000000000..b874e909ce
--- /dev/null
+++ b/sysdeps/posix/cuserid.c
@@ -0,0 +1,46 @@
+/* Copyright (C) 1991 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <stdio.h>
+#include <string.h>
+#include <pwd.h>
+
+extern int EXFUN(geteuid, (NOARGS));
+
+
+/* Return the username of the caller.
+   If S is not NULL, it points to a buffer of at least L_cuserid bytes
+   into which the name is copied; otherwise, a static buffer is used.  */
+char *
+DEFUN(cuserid, (s), char *s)
+{
+  static char name[L_cuserid];
+  struct passwd *pwent = getpwuid(geteuid());
+
+  if (pwent == NULL)
+    {
+      if (s != NULL)
+	s[0] = '\0';
+      return NULL;
+    }
+
+  if (s == NULL)
+    s = name;
+  return strcpy(s, pwent->pw_name);
+}
diff --git a/sysdeps/posix/defs.c b/sysdeps/posix/defs.c
new file mode 100644
index 0000000000..fcbaf16f69
--- /dev/null
+++ b/sysdeps/posix/defs.c
@@ -0,0 +1,76 @@
+/* Definitions of global stdio data structures.
+
+Copyright (C) 1991, 1993 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <unistd.h>
+
+/* This file defines all the global internal variables for stdio.  */
+
+/* Standard streams.  */
+#define	READ		1, 0
+#define	WRITE		0, 1
+#define	BUFFERED	0
+#define	UNBUFFERED	1
+#define	stdstream(name, next, fd, readwrite, unbuffered)		      \
+    {									      \
+      _IOMAGIC,								      \
+      NULL, NULL, NULL, NULL, 0,					      \
+      (PTR) fd,								      \
+      { readwrite, /* ... */ },						      \
+      { NULL, NULL, NULL, NULL, NULL },					      \
+      { NULL, NULL },							      \
+      -1, -1,								      \
+      (next),								      \
+      NULL, '\0', 0,							      \
+      0, 0, unbuffered, 0, 0, 0, 0					      \
+    }
+static FILE stdstreams[3] =
+  {
+    stdstream (&stdstreams[0], &stdstreams[1], STDIN_FILENO, READ, BUFFERED),
+    stdstream (&stdstreams[1], &stdstreams[2], STDOUT_FILENO, WRITE, BUFFERED),
+    stdstream (&stdstreams[2], NULL, STDERR_FILENO, WRITE, UNBUFFERED),
+  };
+FILE *stdin = &stdstreams[0];
+FILE *stdout = &stdstreams[1];
+FILE *stderr = &stdstreams[2];
+
+/* Pointer to the first stream in the list.  */
+FILE *__stdio_head = &stdstreams[0];
+
+/* This function MUST be in this file!
+   This is because we want _cleanup to go into the __libc_atexit set
+   when any stdio code is used (and to use any stdio code, one must reference
+   something defined in this file), and since only local symbols can be made
+   set elements, having the set element stab entry here and _cleanup elsewhere
+   loses; and having them both elsewhere loses because there is no reference
+   to cause _cleanup to be linked in.  */
+
+void
+DEFUN_VOID(_cleanup)
+{
+  (void) fclose((FILE *) NULL);
+}
+
+
+#ifdef	HAVE_GNU_LD
+text_set_element(__libc_atexit, _cleanup);
+#endif
diff --git a/sysdeps/posix/dup.c b/sysdeps/posix/dup.c
new file mode 100644
index 0000000000..73c5900f9c
--- /dev/null
+++ b/sysdeps/posix/dup.c
@@ -0,0 +1,32 @@
+/* Copyright (C) 1991, 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+
+/* Duplicate FD, returning a new file descriptor open on the same file.  */
+int
+DEFUN(__dup, (fd), int fd)
+{
+  return fcntl(fd, F_DUPFD, 0);
+}
+
+weak_alias (__dup, dup)
diff --git a/sysdeps/posix/dup2.c b/sysdeps/posix/dup2.c
new file mode 100644
index 0000000000..c0c6b2a0f6
--- /dev/null
+++ b/sysdeps/posix/dup2.c
@@ -0,0 +1,59 @@
+/* Copyright (C) 1991, 1992, 1993, 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <unistd.h>
+
+
+/* Duplicate FD to FD2, closing the old FD2 and making FD2 be
+   open the same file as FD is.  Return FD2 or -1.  */
+int
+DEFUN(__dup2, (fd, fd2), int fd AND int fd2)
+{
+  int save;
+
+  if (fd2 < 0
+#ifdef OPEN_MAX
+      || fd2 >= OPEN_MAX
+#endif
+)
+    {
+      errno = EBADF;
+      return -1;
+    }
+
+  /* Check if FD is kosher.  */
+  if (fcntl (fd, F_GETFL) < 0)
+    return -1;
+
+  if (fd == fd2)
+    return fd2;
+
+  /* This is not atomic.  */
+
+  save = errno;
+  (void) close (fd2);
+  errno = save;
+
+  return fcntl (fd, F_DUPFD, fd2);
+}
+
+weak_alias (__dup2, dup2)
diff --git a/sysdeps/posix/fdopen.c b/sysdeps/posix/fdopen.c
new file mode 100644
index 0000000000..ad746ec371
--- /dev/null
+++ b/sysdeps/posix/fdopen.c
@@ -0,0 +1,72 @@
+/* Copyright (C) 1991, 1992, 1993 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <errno.h>
+#include <stdio.h>
+#include <fcntl.h>
+
+/* Defined in fopen.c.  */
+extern int EXFUN(__getmode, (CONST char *mode, __io_mode *mptr));
+
+/* Open a new stream on a given system file descriptor.  */
+FILE *
+DEFUN(fdopen, (fd, mode), int fd AND CONST char *mode)
+{
+  register FILE *stream;
+  __io_mode m;
+  int dflags;
+
+  if (!__getmode (mode, &m))
+    return NULL;
+
+  /* Verify the FD is valid and allows the access MODE specifies.  */
+
+  dflags = __fcntl (fd, F_GETFL);
+  if (dflags == -1)
+    /* FD was invalid; fcntl has already set errno.  */
+    return NULL;
+
+  /* Check the access mode.  */
+  switch (dflags & O_ACCMODE)
+    {
+    case O_RDONLY:
+      if (!m.__read)
+	{
+	  errno = EBADF;
+	  return NULL;
+	}
+      break;
+    case O_WRONLY:
+      if (!m.__write)
+	{
+	  errno = EBADF;
+	  return NULL;
+	}
+      break;
+    }
+
+  stream = __newstream ();
+  if (stream == NULL)
+    return NULL;
+
+  stream->__cookie = (PTR) fd;
+  stream->__mode = m;
+
+  return stream;
+}
diff --git a/sysdeps/posix/flock.c b/sysdeps/posix/flock.c
new file mode 100644
index 0000000000..b4c9fc3b79
--- /dev/null
+++ b/sysdeps/posix/flock.c
@@ -0,0 +1,58 @@
+/* Copyright (C) 1992, 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+/* This file implements the `flock' function in terms of the POSIX.1 `fcntl'
+   locking mechanism.  In 4BSD, these are two incompatible locking mechanisms,
+   perhaps with different semantics?  */
+
+#include <ansidecl.h>
+#include <errno.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/file.h>
+
+/* Apply or remove an advisory lock, according to OPERATION,
+   on the file FD refers to.  */
+int
+DEFUN(__flock, (fd, operation), int fd AND int operation)
+{
+  struct flock lbuf;
+
+  switch (operation & ~LOCK_NB)
+    {
+    case LOCK_SH:
+      lbuf.l_type = F_RDLCK;
+      break;
+    case LOCK_EX:
+      lbuf.l_type = F_WRLCK;
+      break;
+    case LOCK_UN:
+      lbuf.l_type = F_UNLCK;
+      break;
+    default:
+      errno = EINVAL;
+      return -1;
+    }
+
+  lbuf.l_whence = SEEK_SET;
+  lbuf.l_start = lbuf.l_len = 0L; /* Lock the whole file.  */
+
+  return __fcntl (fd, (operation & LOCK_NB) ? F_SETLK : F_SETLKW, &lbuf);
+}
+
+weak_alias (__flock, flock)
diff --git a/sysdeps/posix/fpathconf.c b/sysdeps/posix/fpathconf.c
new file mode 100644
index 0000000000..b339990b57
--- /dev/null
+++ b/sysdeps/posix/fpathconf.c
@@ -0,0 +1,116 @@
+/* Copyright (C) 1991, 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <errno.h>
+#include <stddef.h>
+#include <unistd.h>
+#include <limits.h>
+
+
+/* Get file-specific information about descriptor FD.  */
+long int
+DEFUN(__fpathconf, (fd, name), int fd AND int name)
+{
+  if (fd < 0)
+    {
+      errno = EBADF;
+      return -1;
+    }
+
+  switch (name)
+    {
+    default:
+      errno = EINVAL;
+      return -1;
+
+    case _PC_LINK_MAX:
+#ifdef	LINK_MAX
+      return LINK_MAX;
+#else
+      errno = ENOSYS;
+      return -1;
+#endif
+
+    case _PC_MAX_CANON:
+#ifdef	MAX_CANON
+      return MAX_CANON;
+#else
+      errno = ENOSYS;
+      return -1;
+#endif
+
+    case _PC_MAX_INPUT:
+#ifdef	MAX_INPUT
+      return MAX_INPUT;
+#else
+      errno = ENOSYS;
+      return -1;
+#endif
+
+    case _PC_NAME_MAX:
+#ifdef	NAME_MAX
+      return NAME_MAX;
+#else
+      errno = ENOSYS;
+      return -1;
+#endif
+
+    case _PC_PATH_MAX:
+#ifdef	PATH_MAX
+      return PATH_MAX;
+#else
+      errno = ENOSYS;
+      return -1;
+#endif
+
+    case _PC_PIPE_BUF:
+#ifdef	PIPE_BUF
+      return PIPE_BUF;
+#else
+      errno = ENOSYS;
+      return -1;
+#endif
+
+    case _PC_CHOWN_RESTRICTED:
+#ifdef	_POSIX_CHOWN_RESTRICTED
+      return _POSIX_CHOWN_RESTRICTED;
+#else
+      return -1;
+#endif
+
+    case _PC_NO_TRUNC:
+#ifdef	_POSIX_NO_TRUNC
+      return _POSIX_NO_TRUNC;
+#else
+      return -1;
+#endif
+
+    case _PC_VDISABLE:
+#ifdef	_POSIX_VDISABLE
+      return _POSIX_VDISABLE;
+#else
+      return -1;
+#endif
+    }
+
+  errno = ENOSYS;
+  return -1;
+}
+
+weak_alias (__fpathconf, fpathconf)
diff --git a/sysdeps/posix/getcwd.c b/sysdeps/posix/getcwd.c
new file mode 100644
index 0000000000..7b992a9f43
--- /dev/null
+++ b/sysdeps/posix/getcwd.c
@@ -0,0 +1,366 @@
+/* Copyright (C) 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+/* Wants:
+   AC_STDC_HEADERS
+   AC_DIR_HEADER
+   AC_UNISTD_H
+   AC_MEMORY_H
+   AC_CONST
+   AC_ALLOCA
+ */
+
+/* AIX requires this to be the first thing in the file.  */
+#if defined (_AIX) && !defined (__GNUC__)
+ #pragma alloca
+#endif
+
+#ifdef	HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <errno.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#ifdef	STDC_HEADERS
+#include <stddef.h>
+#endif
+
+#if !defined(__GNU_LIBRARY__) && !defined(STDC_HEADERS)
+extern int errno;
+#endif
+
+#ifndef	NULL
+#define	NULL	0
+#endif
+
+#if defined (USGr3) && !defined (DIRENT)
+#define DIRENT
+#endif /* USGr3 */
+#if defined (Xenix) && !defined (SYSNDIR)
+#define SYSNDIR
+#endif /* Xenix */
+
+#if defined (POSIX) || defined (DIRENT) || defined (__GNU_LIBRARY__)
+#include <dirent.h>
+#ifndef	__GNU_LIBRARY__
+#define D_NAMLEN(d) strlen((d)->d_name)
+#else
+#define	HAVE_D_NAMLEN
+#define D_NAMLEN(d) ((d)->d_namlen)
+#endif
+#else /* not POSIX or DIRENT */
+#define	dirent		direct
+#define D_NAMLEN(d)	((d)->d_namlen)
+#define	HAVE_D_NAMLEN
+#if defined (USG) && !defined (sgi)
+#if defined (SYSNDIR)
+#include <sys/ndir.h>
+#else /* Not SYSNDIR */
+#include "ndir.h"
+#endif /* SYSNDIR */
+#else /* not USG */
+#include <sys/dir.h>
+#endif /* USG */
+#endif /* POSIX or DIRENT or __GNU_LIBRARY__ */
+
+#ifdef	HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+#if	(defined (STDC_HEADERS) || defined (__GNU_LIBRARY__) \
+	 || defined (POSIX))
+#include <stdlib.h>
+#include <string.h>
+#define	ANSI_STRING
+#else	/* No standard headers.  */
+
+#ifdef	USG
+
+#include <string.h>
+#ifdef	NEED_MEMORY_H
+#include <memory.h>
+#endif
+#define	ANSI_STRING
+
+#else	/* Not USG.  */
+
+#ifdef	NeXT
+
+#include <string.h>
+
+#else	/* Not NeXT.  */
+
+#include <strings.h>
+
+#ifndef	bcmp
+extern int bcmp ();
+#endif
+#ifndef	bzero
+extern void bzero ();
+#endif
+#ifndef	bcopy
+extern void bcopy ();
+#endif
+
+#endif	/* NeXT. */
+
+#endif	/* USG.  */
+
+extern char *malloc (), *realloc ();
+extern void free ();
+
+#endif /* Standard headers.  */
+
+#ifndef	ANSI_STRING
+#define	memcpy(d, s, n)	bcopy((s), (d), (n))
+#define	memmove memcpy
+#endif	/* Not ANSI_STRING.  */
+
+#if	!defined(__alloca) && !defined(__GNU_LIBRARY__)
+
+#ifdef	__GNUC__
+#undef	alloca
+#define	alloca(n)	__builtin_alloca (n)
+#else	/* Not GCC.  */
+#if	defined (sparc) || defined (HAVE_ALLOCA_H)
+#include <alloca.h>
+#else	/* Not sparc or HAVE_ALLOCA_H.  */
+#ifndef	_AIX
+extern char *alloca ();
+#endif	/* Not _AIX.  */
+#endif	/* sparc or HAVE_ALLOCA_H.  */
+#endif	/* GCC.  */
+
+#define	__alloca	alloca
+
+#endif
+
+#if (defined (HAVE_LIMITS_H) || defined (STDC_HEADERS) || \
+     defined (__GNU_LIBRARY__))
+#include <limits.h>
+#else
+#include <sys/param.h>
+#endif
+
+#ifndef PATH_MAX
+#ifdef	MAXPATHLEN
+#define	PATH_MAX MAXPATHLEN
+#else
+#define	PATH_MAX 1024
+#endif
+#endif
+
+#ifndef	STDC_HEADERS
+#undef	size_t
+#define	size_t	unsigned int
+#endif
+
+#if !__STDC__ && !defined (const)
+#define const
+#endif
+
+#ifndef __GNU_LIBRARY__
+#define	__lstat	stat
+#endif
+
+/* Get the pathname of the current working directory, and put it in SIZE
+   bytes of BUF.  Returns NULL if the directory couldn't be determined or
+   SIZE was too small.  If successful, returns BUF.  In GNU, if BUF is
+   NULL, an array is allocated with `malloc'; the array is SIZE bytes long,
+   unless SIZE <= 0, in which case it is as big as necessary.  */
+
+char *
+getcwd (buf, size)
+     char *buf;
+     size_t size;
+{
+  static const char dots[]
+    = "../../../../../../../../../../../../../../../../../../../../../../../\
+../../../../../../../../../../../../../../../../../../../../../../../../../../\
+../../../../../../../../../../../../../../../../../../../../../../../../../..";
+  const char *dotp, *dotlist;
+  size_t dotsize;
+  dev_t rootdev, thisdev;
+  ino_t rootino, thisino;
+  char *path;
+  register char *pathp;
+  struct stat st;
+
+  if (size == 0)
+    {
+      if (buf != NULL)
+	{
+	  errno = EINVAL;
+	  return NULL;
+	}
+
+      size = PATH_MAX + 1;
+    }
+
+  if (buf != NULL)
+    path = buf;
+  else
+    {
+      path = malloc (size);
+      if (path == NULL)
+	return NULL;
+    }
+
+  pathp = path + size;
+  *--pathp = '\0';
+
+  if (__lstat (".", &st) < 0)
+    return NULL;
+  thisdev = st.st_dev;
+  thisino = st.st_ino;
+
+  if (__lstat ("/", &st) < 0)
+    return NULL;
+  rootdev = st.st_dev;
+  rootino = st.st_ino;
+
+  dotsize = sizeof (dots) - 1;
+  dotp = &dots[sizeof (dots)];
+  dotlist = dots;
+  while (!(thisdev == rootdev && thisino == rootino))
+    {
+      register DIR *dirstream;
+      register struct dirent *d;
+      dev_t dotdev;
+      ino_t dotino;
+      char mount_point;
+
+      /* Look at the parent directory.  */
+      if (dotp == dotlist)
+	{
+	  /* My, what a deep directory tree you have, Grandma.  */
+	  char *new;
+	  if (dotlist == dots)
+	    {
+	      new = malloc (dotsize * 2 + 1);
+	      if (new == NULL)
+		return NULL;
+	      memcpy (new, dots, dotsize);
+	    }
+	  else
+	    {
+	      new = realloc ((__ptr_t) dotlist, dotsize * 2 + 1);
+	      if (new == NULL)
+		goto lose;
+	    }
+	  memcpy (&new[dotsize], new, dotsize);
+	  dotp = &new[dotsize];
+	  dotsize *= 2;
+	  new[dotsize] = '\0';
+	  dotlist = new;
+	}
+
+      dotp -= 3;
+
+      /* Figure out if this directory is a mount point.  */
+      if (__lstat (dotp, &st) < 0)
+	goto lose;
+      dotdev = st.st_dev;
+      dotino = st.st_ino;
+      mount_point = dotdev != thisdev;
+
+      /* Search for the last directory.  */
+      dirstream = opendir (dotp);
+      if (dirstream == NULL)
+	goto lose;
+      while ((d = readdir (dirstream)) != NULL)
+	{
+	  if (d->d_name[0] == '.' &&
+	      (d->d_namlen == 1 || (d->d_namlen == 2 && d->d_name[1] == '.')))
+	    continue;
+	  if (mount_point || d->d_ino == thisino)
+	    {
+	      char *name = __alloca (dotlist + dotsize - dotp +
+				     1 + d->d_namlen + 1);
+	      memcpy (name, dotp, dotlist + dotsize - dotp);
+	      name[dotlist + dotsize - dotp] = '/';
+	      memcpy (&name[dotlist + dotsize - dotp + 1],
+		      d->d_name, d->d_namlen + 1);
+	      if (__lstat (name, &st) < 0)
+		{
+		  int save = errno;
+		  (void) closedir (dirstream);
+		  errno = save;
+		  goto lose;
+		}
+	      if (st.st_dev == thisdev && st.st_ino == thisino)
+		break;
+	    }
+	}
+      if (d == NULL)
+	{
+	  int save = errno;
+	  (void) closedir (dirstream);
+	  errno = save;
+	  goto lose;
+	}
+      else
+	{
+	  if (pathp - path < d->d_namlen + 1)
+	    {
+	      if (buf != NULL)
+		{
+		  errno = ERANGE;
+		  return NULL;
+		}
+	      else
+		{
+		  size *= 2;
+		  buf = realloc (path, size);
+		  if (buf == NULL)
+		    {
+		      (void) closedir (dirstream);
+		      free (path);
+		      errno = ENOMEM; /* closedir might have changed it.  */
+		      return NULL;
+		    }
+		  pathp = &buf[pathp - path];
+		  path = buf;
+		}
+	    }
+	  pathp -= d->d_namlen;
+	  (void) memcpy (pathp, d->d_name, d->d_namlen);
+	  *--pathp = '/';
+	  (void) closedir (dirstream);
+	}
+
+      thisdev = dotdev;
+      thisino = dotino;
+    }
+
+  if (pathp == &path[size - 1])
+    *--pathp = '/';
+
+  if (dotlist != dots)
+    free ((__ptr_t) dotlist);
+
+  memmove (path, pathp, path + size - pathp);
+  return path;
+
+ lose:
+  if (dotlist != dots)
+    free ((__ptr_t) dotlist);
+  return NULL;
+}
diff --git a/sysdeps/posix/getdtsz.c b/sysdeps/posix/getdtsz.c
new file mode 100644
index 0000000000..2080dc7c51
--- /dev/null
+++ b/sysdeps/posix/getdtsz.c
@@ -0,0 +1,32 @@
+/* Copyright (C) 1991, 1993, 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <unistd.h>
+
+extern long int EXFUN(__sysconf, (int));
+
+/* Return the maximum number of file descriptors
+   the current process could possibly have.  */
+int
+DEFUN_VOID(__getdtablesize)
+{
+  return __sysconf (_SC_OPEN_MAX);
+}
+
+weak_alias (__getdtablesize, getdtablesize)
diff --git a/sysdeps/posix/getpagesize.c b/sysdeps/posix/getpagesize.c
new file mode 100644
index 0000000000..4deb208633
--- /dev/null
+++ b/sysdeps/posix/getpagesize.c
@@ -0,0 +1,31 @@
+/* Copyright (C) 1993, 1995 Free Software Foundation, Inc.
+   Contributed by Brendan Kehoe (brendan@cygnus.com).
+
+The GNU C Library 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 2, or (at your option)
+any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with the GNU C Library; see the file COPYING.  If not, write to
+the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <stddef.h>
+#include <unistd.h>
+
+extern long int EXFUN(__sysconf, (int));
+
+/* Return the system page size.  */
+size_t
+DEFUN_VOID(__getpagesize)
+{
+  return __sysconf (_SC_PAGESIZE);
+}
+
+weak_alias (__getpagesize, getpagesize)
diff --git a/sysdeps/posix/gettimeofday.c b/sysdeps/posix/gettimeofday.c
new file mode 100644
index 0000000000..a4bb38a41c
--- /dev/null
+++ b/sysdeps/posix/gettimeofday.c
@@ -0,0 +1,75 @@
+/* Copyright (C) 1991, 1992, 1994, 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <errno.h>
+#include <time.h>
+#include <sys/time.h>
+
+#ifndef HAVE_GNU_LD
+#define __daylight	daylight
+#define __timezone	timezone
+#define __tzname	tzname
+#endif
+
+
+/* Get the current time of day and timezone information,
+   putting it into *TV and *TZ.  If TZ is NULL, *TZ is not filled.
+   Returns 0 on success, -1 on errors.  */
+int
+DEFUN(__gettimeofday, (tv, tz),
+      struct timeval *tv AND struct timezone *tz)
+{
+  if (tv == NULL)
+    {
+      errno = EINVAL;
+      return -1;
+    }
+
+  tv->tv_sec = (long int) time ((time_t *) NULL);
+  tv->tv_usec = 0L;
+
+  if (tz != NULL)
+    {
+      CONST time_t timer = tv->tv_sec;
+      CONST struct tm *tm;
+
+      CONST long int save_timezone = __timezone;
+      CONST long int save_daylight = __daylight;
+      char *save_tzname[2];
+      save_tzname[0] = __tzname[0];
+      save_tzname[1] = __tzname[1];
+
+      tm = localtime (&timer);
+
+      tz->tz_minuteswest = __timezone / 60;
+      tz->tz_dsttime = __daylight;
+
+      __timezone = save_timezone;
+      __daylight = save_daylight;
+      __tzname[0] = save_tzname[0];
+      __tzname[1] = save_tzname[1];
+
+      if (tm == NULL)
+	return -1;
+    }
+
+  return 0;
+}
+
+weak_alias (__gettimeofday, gettimeofday)
diff --git a/sysdeps/posix/isatty.c b/sysdeps/posix/isatty.c
new file mode 100644
index 0000000000..7536b1eeed
--- /dev/null
+++ b/sysdeps/posix/isatty.c
@@ -0,0 +1,39 @@
+/* Copyright (C) 1991, 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <errno.h>
+#include <unistd.h>
+#include <termios.h>
+
+/* Return 1 if FD is a terminal, 0 if not.  */
+int
+DEFUN(__isatty, (fd), int fd)
+{
+  int save;
+  int is_tty;
+  struct termios term;
+
+  save = errno;
+  is_tty = __tcgetattr(fd, &term) == 0;
+  errno = save;
+
+  return is_tty;
+}
+
+weak_alias (__isatty, isatty)
diff --git a/sysdeps/posix/killpg.c b/sysdeps/posix/killpg.c
new file mode 100644
index 0000000000..0c70dd2164
--- /dev/null
+++ b/sysdeps/posix/killpg.c
@@ -0,0 +1,37 @@
+/* Copyright (C) 1991, 1993 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <errno.h>
+#include <signal.h>
+
+
+/* Send SIG to all processes in process group PGRP.
+   If PGRP is zero, send SIG to all processes in
+   the current process's process group.  */
+int
+DEFUN(killpg, (pgrp, sig), __pid_t pgrp AND int sig)
+{
+  if (pgrp < 0)
+    {
+      errno = EINVAL;
+      return -1;
+    }
+
+  return __kill (- pgrp, sig);
+}
diff --git a/sysdeps/posix/libc_fatal.c b/sysdeps/posix/libc_fatal.c
new file mode 100644
index 0000000000..5539516733
--- /dev/null
+++ b/sysdeps/posix/libc_fatal.c
@@ -0,0 +1,56 @@
+/* Copyright (C) 1993, 1994, 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <errno.h>
+#include <sysdep.h>
+
+#ifdef FATAL_PREPARE_INCLUDE
+#include FATAL_PREPARE_INCLUDE
+#endif
+
+/* Abort with an error message.  */
+void
+DEFUN(__libc_fatal, (message), CONST char *message)
+{
+  size_t len = strlen (message);
+
+#ifdef FATAL_PREPARE
+  FATAL_PREPARE;
+#endif
+
+  while (len > 0)
+    {
+      register int count = __write (STDERR_FILENO, message, len);
+      if (count > 0)
+	{
+	  message += count;
+	  len -= count;
+	}
+      else if (count < 0
+#ifdef EINTR
+	       && errno != EINTR
+#endif
+	       )
+	break;
+    }
+
+  abort ();
+}
diff --git a/sysdeps/posix/mk-stdiolim.c b/sysdeps/posix/mk-stdiolim.c
new file mode 100644
index 0000000000..da78a98394
--- /dev/null
+++ b/sysdeps/posix/mk-stdiolim.c
@@ -0,0 +1,71 @@
+/* Copyright (C) 1991, 1992, 1993 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <posix1_lim.h>
+
+int
+main()
+{
+  /* These values correspond to the code in sysdeps/posix/tempname.c.
+     Change the values here if you change that code.  */
+  printf("#define L_tmpnam %u\n", sizeof("/usr/tmp/") + 8);
+  printf("#define TMP_MAX %u\n", 62 * 62 * 62);
+
+  puts  ("#ifdef __USE_POSIX");
+  printf("#define L_ctermid %u\n", sizeof("/dev/tty"));
+  printf("#define L_cuserid 9\n");
+  puts  ("#endif");
+
+  /* POSIX does not require that OPEN_MAX and PATH_MAX be defined, so
+     <local_lim.h> will not define them if they are run-time variant (which
+     is the case in the Hurd).  ANSI still requires that FOPEN_MAX and
+     FILENAME_MAX be defined, however.  */
+
+  printf("#define FOPEN_MAX %u\n", 
+#ifdef	OPEN_MAX
+
+	 OPEN_MAX
+#else
+	 /* This is the minimum number of files that the implementation
+	    guarantees can be open simultaneously.  OPEN_MAX not being
+	    defined means the maximum is run-time variant; but POSIX.1
+	    requires that it never be less than _POSIX_OPEN_MAX, so that is
+	    a good minimum to use.  */
+	 _POSIX_OPEN_MAX
+#endif
+
+	 );
+
+  printf("#define FILENAME_MAX %u\n", 
+#ifdef	PATH_MAX
+	 PATH_MAX
+#else
+	 /* This is supposed to be the size needed to hold the longest file
+	    name string the implementation guarantees can be opened.
+	    PATH_MAX not being defined means the actual limit on the length
+	    of a file name is runtime-variant (or it is unlimited).  ANSI
+	    says in such a case FILENAME_MAX should be a good size to
+	    allocate for a file name string.  POSIX.1 guarantees that a
+	    file name up to _POSIX_PATH_MAX chars long can be opened, so
+	    this value must be at least that.  */
+	    1024		/* _POSIX_PATH_MAX is 255.  */
+#endif
+	 );
+
+  exit(0);
+}
diff --git a/sysdeps/posix/mkstemp.c b/sysdeps/posix/mkstemp.c
new file mode 100644
index 0000000000..9f4f68d72d
--- /dev/null
+++ b/sysdeps/posix/mkstemp.c
@@ -0,0 +1,64 @@
+/* Copyright (C) 1991, 1992 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <string.h>
+#include <errno.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+/* Generate a unique temporary file name from TEMPLATE.
+   The last six characters of TEMPLATE must be "XXXXXX";
+   they are replaced with a string that makes the filename unique.
+   Returns a file descriptor open on the file for reading and writing.  */
+int
+DEFUN(mkstemp, (template), char *template)
+{
+  static CONST char letters[]
+    = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
+  size_t len;
+  size_t i;
+
+  len = strlen (template);
+  if (len < 6 || strcmp (&template[len - 6], "XXXXXX"))
+    {
+      errno = EINVAL;
+      return -1;
+    }
+
+  if (sprintf (&template[len - 5], "%.5u",
+	       (unsigned int) getpid () % 100000) != 5)
+    /* Inconceivable lossage.  */
+    return -1;
+
+  for (i = 0; i < sizeof (letters); ++i)
+    {
+      int fd;
+
+      template[len - 6] = letters[i];
+
+      fd = open (template, O_RDWR|O_CREAT|O_EXCL, 0666);
+      if (fd >= 0)
+	return fd;
+    }
+
+  /* We return the null string if we can't find a unique file name.  */
+  template[0] = '\0';
+  return -1;
+}
diff --git a/sysdeps/posix/mktemp.c b/sysdeps/posix/mktemp.c
new file mode 100644
index 0000000000..c3aae36a7b
--- /dev/null
+++ b/sysdeps/posix/mktemp.c
@@ -0,0 +1,64 @@
+/* Copyright (C) 1991, 1992, 1993 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <string.h>
+#include <errno.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+/* Generate a unique temporary file name from TEMPLATE.
+   The last six characters of TEMPLATE must be "XXXXXX";
+   they are replaced with a string that makes the filename unique.  */
+char *
+DEFUN(mktemp, (template), char *template)
+{
+  static CONST char letters[]
+    = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
+  size_t len;
+  size_t i;
+
+  len = strlen (template);
+  if (len < 6 || strcmp (&template[len - 6], "XXXXXX"))
+    {
+      errno = EINVAL;
+      return NULL;
+    }
+
+  if (sprintf (&template[len - 5], "%.5u",
+	       (unsigned int) getpid () % 100000) != 5)
+    /* Inconceivable lossage.  */
+    return NULL;
+
+  for (i = 0; i < sizeof (letters); ++i)
+    {
+      struct stat ignored;
+
+      template[len - 6] = letters[i];
+
+      if (stat (template, &ignored) < 0 && errno == ENOENT)
+	/* The file does not exist.  So return this name.  */
+	return template;
+    }
+
+  /* We return the null string if we can't find a unique file name.  */
+  template[0] = '\0';
+  return template;
+}
diff --git a/sysdeps/posix/pipestream.c b/sysdeps/posix/pipestream.c
new file mode 100644
index 0000000000..53595f5b54
--- /dev/null
+++ b/sysdeps/posix/pipestream.c
@@ -0,0 +1,223 @@
+/* Copyright (C) 1991, 1992, 1993 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <errno.h>
+#include <stddef.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+#define	SH_PATH	"/bin/sh"	/* Shell to run.  */
+#define	SH_NAME	"sh"		/* Name to give it.  */
+
+/* Structure describing a popen child.  */
+struct child
+  {
+    pid_t pid;			/* PID of the child.  */
+    __ptr_t cookie;		/* Original cookie from fdopen.  */
+    __io_functions funcs;	/* Original functions from fdopen.  */
+  };
+
+/* io_functions for pipe streams.
+   These all simply call the corresponding
+   original function with the original cookie.  */
+
+#define FUNC(type, name, args)						      \
+  static type DEFUN(__CONCAT(child_,name), args, __CONCAT(name,decl))	      \
+  {									      \
+    struct child *c = (struct child *) cookie;				      \
+    {									      \
+      __ptr_t cookie = c->cookie;					      \
+      return (*c->funcs.__CONCAT(__,name)) args;			      \
+    }									      \
+  }
+
+#define readdecl PTR cookie AND register char *buf AND register size_t n
+FUNC (int, read, (cookie, buf, n))
+#define writedecl PTR cookie AND register CONST char *buf AND register size_t n
+FUNC (int, write, (cookie, buf, n))
+#define seekdecl PTR cookie AND fpos_t *pos AND int whence
+FUNC (int, seek, (cookie, pos, whence))
+#define closedecl PTR cookie
+FUNC (int, close, (cookie))
+#define filenodecl PTR cookie
+FUNC (int, fileno, (cookie))
+
+static const __io_functions child_funcs
+  = { child_read, child_write, child_seek, child_close, child_fileno };
+
+/* Open a new stream that is a one-way pipe to a
+   child process running the given shell command.  */
+FILE *
+DEFUN(popen, (command, mode), CONST char *command AND CONST char *mode)
+{
+  pid_t pid;
+  int pipedes[2];
+  FILE *stream;
+  struct child *child;
+
+  if (command == NULL || mode == NULL || (*mode != 'r' && *mode != 'w'))
+    {
+      errno = EINVAL;
+      return NULL;
+    }
+
+  /* Create the pipe.  */
+  if (pipe(pipedes) < 0)
+    return NULL;
+
+  /* Fork off the child.  */
+  pid = __vfork ();
+  if (pid == (pid_t) -1)
+    {
+      /* The fork failed.  */
+      (void) close (pipedes[0]);
+      (void) close (pipedes[1]);
+      return NULL;
+    }
+  else if (pid == (pid_t) 0)
+    {
+      /* We are the child side.  Make the write side of
+	 the pipe be stdin or the read side be stdout.  */
+
+      CONST char *new_argv[4];
+
+      if ((*mode == 'w' ? dup2(pipedes[STDIN_FILENO], STDIN_FILENO) :
+	  dup2(pipedes[STDOUT_FILENO], STDOUT_FILENO)) < 0)
+	_exit(127);
+
+      /* Close the pipe descriptors.  */
+      (void) close(pipedes[STDIN_FILENO]);
+      (void) close(pipedes[STDOUT_FILENO]);
+
+      /* Exec the shell.  */
+      new_argv[0] = SH_NAME;
+      new_argv[1] = "-c";
+      new_argv[2] = command;
+      new_argv[3] = NULL;
+      (void) execve(SH_PATH, (char *CONST *) new_argv, environ);
+      /* Die if it failed.  */
+      _exit(127);
+    }
+
+  /* We are the parent side.  */
+
+  /* Close the irrelevant side of the pipe and open the relevant side as a
+     new stream.  Mark our side of the pipe to close on exec, so new children
+     won't see it.  */
+  if (*mode == 'r')
+    {
+      (void) close (pipedes[STDOUT_FILENO]);
+      (void) fcntl (pipedes[STDIN_FILENO], F_SETFD, FD_CLOEXEC);
+      stream = fdopen (pipedes[STDIN_FILENO], mode);
+    }
+  else
+    {
+      (void) close (pipedes[STDIN_FILENO]);
+      (void) fcntl (pipedes[STDOUT_FILENO], F_SETFD, FD_CLOEXEC);
+      stream = fdopen (pipedes[STDOUT_FILENO], mode);
+    }
+
+  if (stream == NULL)
+    goto error;
+
+  child = (struct child *) malloc (sizeof (struct child));
+  if (child == NULL)
+    goto error;
+
+  {
+    /* Make sure STREAM has its functions set before
+       we try to squirrel them away in CHILD.  */
+    extern void __stdio_check_funcs __P ((FILE *));
+    __stdio_check_funcs (stream);
+  }
+
+  child->pid = pid;
+  child->cookie = stream->__cookie;
+  child->funcs = stream->__io_funcs;
+  stream->__cookie = (PTR) child;
+  stream->__io_funcs = child_funcs;
+  stream->__ispipe = 1;
+  return stream;
+
+ error:
+  {
+    /* The stream couldn't be opened or the child structure couldn't be
+       allocated.  Kill the child and close the other side of the pipe.  */
+    int save = errno;
+    (void) kill (pid, SIGKILL);
+    if (stream == NULL)
+      (void) close (pipedes[*mode == 'r' ? STDOUT_FILENO : STDIN_FILENO]);
+    else
+      (void) fclose (stream);
+#ifndef	NO_WAITPID
+    (void) waitpid (pid, (int *) NULL, 0);
+#else
+    {
+      pid_t dead;
+      do
+	dead = wait ((int *) NULL);
+      while (dead > 0 && dead != pid);
+    }
+#endif
+    errno = save;
+    return NULL;
+  }
+}
+
+/* Close a stream opened by popen and return its status.
+   Returns -1 if the stream was not opened by popen.  */
+int
+DEFUN(pclose, (stream), register FILE *stream)
+{
+  struct child *c;
+  pid_t pid, dead;
+  int status;
+
+  if (!__validfp(stream) || !stream->__ispipe)
+    {
+      errno = EINVAL;
+      return -1;
+    }
+
+  c = (struct child *) stream->__cookie;
+  pid = c->pid;
+  stream->__cookie = c->cookie;
+  stream->__io_funcs = c->funcs;
+  free ((PTR) c);
+  stream->__ispipe = 0;
+  if (fclose (stream))
+    return -1;
+
+#ifndef	NO_WAITPID
+  dead = waitpid (pid, &status, 0);
+#else
+  do
+    dead = wait (&status);
+  while (dead > 0 && dead != pid);
+#endif
+  if (dead != pid)
+    status = -1;
+
+  return status;
+}
diff --git a/sysdeps/posix/raise.c b/sysdeps/posix/raise.c
new file mode 100644
index 0000000000..159fdd5cb9
--- /dev/null
+++ b/sysdeps/posix/raise.c
@@ -0,0 +1,28 @@
+/* Copyright (C) 1991 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <signal.h>
+#include <unistd.h>
+
+/* Raise the signal SIG.  */
+int
+DEFUN(raise, (sig), int sig)
+{
+  return __kill(__getpid(), sig);
+}
diff --git a/sysdeps/posix/readv.c b/sysdeps/posix/readv.c
new file mode 100644
index 0000000000..5f61e61b9f
--- /dev/null
+++ b/sysdeps/posix/readv.c
@@ -0,0 +1,68 @@
+/* Copyright (C) 1991, 1992 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <sys/uio.h>
+
+/* Read data from file descriptor FD, and put the result in the
+   buffers described by VECTOR, which is a vector of COUNT `struct iovec's.
+   The buffers are filled in the order specified.
+   Operates just like `read' (see <unistd.h>) except that data are
+   put in VECTOR instead of a contiguous buffer.  */
+int
+DEFUN(readv, (fd, vector, count),
+      int fd AND CONST struct iovec *vector AND size_t count)
+{
+  char *buffer;
+  size_t bytes;
+  int bytes_read;
+  register size_t i;
+
+  /* Find the total number of bytes to be read.  */
+  bytes = 0;
+  for (i = 0; i < count; ++i)
+    bytes += vector[i].iov_len;
+
+  /* Allocate a temporary buffer to hold the data.  */
+  buffer = (char *) __alloca(bytes);
+
+  /* Read the data.  */
+  bytes_read = read(fd, buffer, bytes);
+  if (bytes_read <= 0)
+    return -1;
+
+  /* Copy the data from BUFFER into the memory specified by VECTOR.  */
+  bytes = bytes_read;
+  for (i = 0; i < count; ++i)
+    {
+#define	min(a, b)	((a) > (b) ? (b) : (a))
+      size_t copy = min(vector[i].iov_len, bytes);
+
+      (void) memcpy((PTR) vector[i].iov_base, (PTR) buffer, copy);
+
+      buffer += copy;
+      bytes -= copy;
+      if (bytes == 0)
+	break;
+    }
+
+  return bytes_read;
+}
diff --git a/sysdeps/posix/remove.c b/sysdeps/posix/remove.c
new file mode 100644
index 0000000000..66414c9039
--- /dev/null
+++ b/sysdeps/posix/remove.c
@@ -0,0 +1,40 @@
+/* ANSI C `remove' function to delete a file or directory.  POSIX.1 version.
+Copyright (C) 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <errno.h>
+#include <stdio.h>
+#include <unistd.h>
+
+int
+remove (file)
+     const char *file;
+{
+  int save;
+
+  save = errno;
+  if (__rmdir (file) == 0)
+    return 0;
+  else if (errno == ENOTDIR && __unlink (file) == 0)
+    {
+      errno = save;
+      return 0;
+    }
+
+  return -1;
+}
diff --git a/sysdeps/posix/rename.c b/sysdeps/posix/rename.c
new file mode 100644
index 0000000000..3245f9cf9c
--- /dev/null
+++ b/sysdeps/posix/rename.c
@@ -0,0 +1,50 @@
+/* Copyright (C) 1991, 1992 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <errno.h>
+
+/* Rename the file OLD to NEW.  */
+int
+DEFUN(rename, (old, new), CONST char *old AND CONST char *new)
+{
+  int save = errno;
+  if (__link(old, new) < 0)
+    {
+      if (errno == EEXIST)
+	{
+	  errno = save;
+	  /* Race condition, required for 1003.1 conformance.  */
+	  if (__unlink(new) < 0 ||
+	      __link(old, new) < 0)
+	    return -1;
+	}
+      else
+	return -1;
+    }
+  if (__unlink(old) < 0)
+    {
+      save = errno;
+      if (__unlink(new) == 0)
+	errno = save;
+      return -1;
+    }
+  return 0;
+}
diff --git a/sysdeps/posix/sigblock.c b/sysdeps/posix/sigblock.c
new file mode 100644
index 0000000000..411a952bc3
--- /dev/null
+++ b/sysdeps/posix/sigblock.c
@@ -0,0 +1,55 @@
+/* Copyright (C) 1991, 1994, 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <errno.h>
+#include <signal.h>
+
+/* Block signals in MASK, returning the old mask.  */
+int
+DEFUN(__sigblock, (mask), int mask)
+{
+  register int sig;
+  sigset_t set, oset;
+
+  if (__sigemptyset(&set) < 0)
+    return -1;
+  
+  if (sizeof (mask) == sizeof (set))
+    *(int *) &set = mask;
+  else
+    for (sig = 1; sig < NSIG; ++sig)
+      if ((mask & sigmask(sig)) &&
+	  __sigaddset(&set, sig) < 0)
+	return -1;
+
+  if (sigprocmask(SIG_BLOCK, &set, &oset) < 0)
+    return -1;
+
+  mask = 0;
+  if (sizeof (mask) == sizeof (oset))
+    mask = *(int *) &oset;
+  else
+    for (sig = 1; sig < NSIG; ++sig)
+      if (__sigismember(&oset, sig))
+	mask |= sigmask(sig);
+
+  return mask;
+}
+
+weak_alias (__sigblock, sigblock)
diff --git a/sysdeps/posix/sigintr.c b/sysdeps/posix/sigintr.c
new file mode 100644
index 0000000000..441c643df8
--- /dev/null
+++ b/sysdeps/posix/sigintr.c
@@ -0,0 +1,57 @@
+/* Copyright (C) 1992, 1994 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <stddef.h>
+#include <signal.h>
+#include <errno.h>
+
+/* If INTERRUPT is nonzero, make signal SIG interrupt system calls
+   (causing them to fail with EINTR); if INTERRUPT is zero, make system
+   calls be restarted after signal SIG.  */
+int
+DEFUN(siginterrupt, (sig, interrupt),
+      int sig AND int interrupt)
+{
+#ifdef	SA_RESTART
+  extern sigset_t _sigintr;	/* Defined in signal.c.  */
+  struct sigaction action;
+
+  if (__sigaction (sig, (struct sigaction *) NULL, &action) < 0)
+    return -1;
+
+  if (interrupt)
+    {
+      __sigaddset (&_sigintr, sig);
+      action.sa_flags &= ~SA_RESTART;
+    }
+  else
+    {
+      __sigdelset (&_sigintr, sig);
+      action.sa_flags |= SA_RESTART;
+    }
+
+  if (__sigaction (sig, &action, (struct sigaction *) NULL) < 0)
+    return -1;
+
+  return 0;
+#else
+  errno = ENOSYS;
+  return -1;
+#endif
+}
diff --git a/sysdeps/posix/signal.c b/sysdeps/posix/signal.c
new file mode 100644
index 0000000000..f9ae47b6bb
--- /dev/null
+++ b/sysdeps/posix/signal.c
@@ -0,0 +1,47 @@
+/* Copyright (C) 1991, 1992 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <errno.h>
+#include <signal.h>
+
+
+sigset_t _sigintr;		/* Set by siginterrupt.  */
+
+/* Set the handler for the signal SIG to HANDLER,
+   returning the old handler, or SIG_ERR on error.  */
+__sighandler_t
+DEFUN(signal, (sig, handler), int sig AND __sighandler_t handler)
+{
+  struct sigaction act, oact;
+
+  if (handler == SIG_ERR)
+    {
+      errno = EINVAL;
+      return SIG_ERR;
+    }
+
+  act.sa_handler = handler;
+  if (__sigemptyset (&act.sa_mask) < 0)
+    return SIG_ERR;
+  act.sa_flags = __sigismember (&_sigintr, sig) ? 0 : SA_RESTART;
+  if (__sigaction (sig, &act, &oact) < 0)
+    return SIG_ERR;
+
+  return oact.sa_handler;
+}
diff --git a/sysdeps/posix/sigpause.c b/sysdeps/posix/sigpause.c
new file mode 100644
index 0000000000..97716d352b
--- /dev/null
+++ b/sysdeps/posix/sigpause.c
@@ -0,0 +1,45 @@
+/* Copyright (C) 1991, 1992, 1994, 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <errno.h>
+#include <signal.h>
+
+/* Set the mask of blocked signals to MASK,
+   wait for a signal to arrive, and then restore the mask.  */
+int
+DEFUN(__sigpause, (mask), int mask)
+{
+  sigset_t set;
+  int sig;
+
+  if (__sigemptyset (&set) < 0)
+    return -1;
+
+  if (sizeof (mask) == sizeof (set))
+    *(int *) &set = mask;
+  else
+    for (sig = 1; sig < NSIG; ++sig)
+      if ((mask & sigmask(sig)) &&
+	  __sigaddset(&set, sig) < 0)
+	return -1;
+
+  return sigsuspend (&set);
+}
+
+weak_alias (__sigpause, sigpause)
diff --git a/sysdeps/posix/sigsetmask.c b/sysdeps/posix/sigsetmask.c
new file mode 100644
index 0000000000..12e77a619d
--- /dev/null
+++ b/sysdeps/posix/sigsetmask.c
@@ -0,0 +1,55 @@
+/* Copyright (C) 1991, 1994, 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <errno.h>
+#include <signal.h>
+
+/* Set the mask of blocked signals to MASK, returning the old mask.  */
+int
+DEFUN(__sigsetmask, (mask), int mask)
+{
+  register int sig;
+  sigset_t set, oset;
+
+  if (__sigemptyset(&set) < 0)
+    return -1;
+  
+  if (sizeof (mask) == sizeof (set))
+    *(int *) &set = mask;
+  else
+    for (sig = 1; sig < NSIG; ++sig)
+      if ((mask & sigmask(sig)) &&
+	  __sigaddset(&set, sig) < 0)
+	return -1;
+
+  if (sigprocmask(SIG_SETMASK, &set, &oset) < 0)
+    return -1;
+
+  mask = 0;
+  if (sizeof (mask) == sizeof (oset))
+    mask = *(int *) &oset;
+  else
+    for (sig = 1; sig < NSIG; ++sig)
+      if (__sigismember(&oset, sig))
+	mask |= sigmask(sig);
+
+  return mask;
+}
+
+weak_alias (__sigsetmask, sigsetmask)
diff --git a/sysdeps/posix/sigsuspend.c b/sysdeps/posix/sigsuspend.c
new file mode 100644
index 0000000000..771315333a
--- /dev/null
+++ b/sysdeps/posix/sigsuspend.c
@@ -0,0 +1,51 @@
+/* Copyright (C) 1991 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <errno.h>
+#include <signal.h>
+#include <stddef.h>
+#include <unistd.h>
+
+
+/* Change the set of blocked signals to SET,
+   wait until a signal arrives, and restore the set of blocked signals.  */
+int
+DEFUN(sigsuspend, (set), CONST sigset_t *set)
+{
+  sigset_t oset;
+  int save;
+
+  if (set == NULL)
+    {
+      errno = EINVAL;
+      return -1;
+    }
+
+  if (sigprocmask(SIG_SETMASK, set, &oset) < 0)
+    return -1;
+
+  (void) pause();
+  save = errno;
+
+  if (sigprocmask(SIG_SETMASK, &oset, (sigset_t *) NULL) < 0)
+    return -1;
+
+  errno = save;
+  return -1;
+}
diff --git a/sysdeps/posix/sigvec.c b/sysdeps/posix/sigvec.c
new file mode 100644
index 0000000000..4aef22ae32
--- /dev/null
+++ b/sysdeps/posix/sigvec.c
@@ -0,0 +1,162 @@
+/* Copyright (C) 1991, 1992, 1994, 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <signal.h>
+#include <errno.h>
+#include <stddef.h>
+
+
+/* We use a wrapper handler to support SV_RESETHAND.  */
+
+static __sighandler_t wrapped_handlers[NSIG];
+static sigset_t wrapped_masks[NSIG];
+
+static void
+DEFUN(wrapper_handler, (sig), int sig)
+{
+  int save;
+  struct sigaction act;
+
+  act.sa_handler = SIG_DFL;
+  act.sa_mask = wrapped_masks[sig];
+  act.sa_flags = 0;
+  save = errno;
+  (void) __sigaction(sig, &act, (struct sigaction *) NULL);
+  errno = save;
+
+  (*wrapped_handlers[sig])(sig);
+}
+
+static
+#ifdef	__GNUC__
+inline
+#endif
+int
+DEFUN(convert_mask, (set, mask), sigset_t *set AND CONST int mask)
+{
+  register int sig;
+
+  if (sizeof(*set) == sizeof(mask))
+    {
+      *(int *) set = mask;
+      return 0;
+    }
+
+  if (__sigemptyset(set) < 0)
+    return -1;
+
+  for (sig = 1; sig < NSIG; ++sig)
+    if (mask & sigmask(sig))
+      if (__sigaddset(set, sig) < 0)
+	return -1;
+
+  return 0;
+}
+
+/* If VEC is non-NULL, set the handler for SIG to the `sv_handler' member
+   of VEC.  The signals in `sv_mask' will be blocked while the handler runs.
+   If the SV_RESETHAND bit is set in `sv_flags', the handler for SIG will be
+   reset to SIG_DFL before `sv_handler' is entered.  If OVEC is non-NULL,
+   it is filled in with the old information for SIG.  */
+int
+DEFUN(__sigvec, (sig, vec, ovec),
+      int sig AND CONST struct sigvec *vec AND struct sigvec *ovec)
+{
+  struct sigaction old;
+
+  if (vec == NULL || !(vec->sv_flags & SV_RESETHAND))
+    {
+      struct sigaction new, *n;
+
+      if (vec == NULL)
+	n = NULL;
+      else
+	{
+	  n = &new;
+	  n->sa_handler = vec->sv_handler;
+	  if (convert_mask (&n->sa_mask, vec->sv_mask) < 0)
+	    return -1;
+	  n->sa_flags = 0;
+	  
+	  if (vec->sv_flags & SV_ONSTACK)
+	    {
+#ifdef SA_ONSTACK
+	      n->sa_flags |= SA_ONSTACK;
+#else
+	      errno = ENOSYS;
+	      return -1;
+#endif
+	    }
+#ifdef SA_RESTART
+	  if (!(vec->sv_flags & SV_INTERRUPT))
+	    n->sa_flags |= SA_RESTART;
+#endif
+	}
+
+      if (__sigaction (sig, n, &old) < 0)
+	return -1;
+    }
+  else
+    {
+      struct sigaction wrapper;
+
+      wrapper.sa_handler = wrapper_handler;
+      wrapped_handlers[sig] = vec->sv_handler;
+      if (convert_mask (&wrapped_masks[sig], vec->sv_mask) < 0)
+	return -1;
+
+      if (__sigaction (sig, &wrapper, &old) < 0)
+	return -1;
+    }
+
+  if (ovec != NULL)
+    {
+      register int i;
+      int mask = 0;
+
+      if (sizeof (int) == sizeof (sigset_t))
+	mask = *(int *) &old.sa_mask;
+      else
+	for (i = 1; i < NSIG; ++i)
+	  if (__sigismember(&old.sa_mask, i))
+	    mask |= sigmask(i);
+
+      ovec->sv_mask = mask;
+      ovec->sv_flags = 0;
+#ifdef SA_ONSTACK
+      if (old.sa_flags & SA_ONSTACK)
+	ovec->sv_flags |= SV_ONSTACK;
+#endif
+#ifdef SA_RESTART
+      if (!(old.sa_flags & SA_RESTART))
+#endif
+	ovec->sv_flags |= SV_INTERRUPT;
+      if (old.sa_handler == wrapper_handler)
+	{
+	  ovec->sv_flags |= SV_RESETHAND;
+	  ovec->sv_handler = wrapped_handlers[sig];
+	}
+      else
+	ovec->sv_handler = old.sa_handler;
+    }
+
+  return 0;
+}
+
+weak_alias (__sigvec, sigvec)
diff --git a/sysdeps/posix/sleep.c b/sysdeps/posix/sleep.c
new file mode 100644
index 0000000000..36864cbf6e
--- /dev/null
+++ b/sysdeps/posix/sleep.c
@@ -0,0 +1,106 @@
+/* Copyright (C) 1991, 1992, 1993 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <signal.h>
+#include <time.h>
+#include <unistd.h>
+#include <errno.h>
+
+
+/* SIGALRM signal handler for `sleep'.  This does nothing but return,
+   but SIG_IGN isn't supposed to break `pause'.  */
+static void
+DEFUN(sleep_handler, (sig), int sig)
+{
+  return;
+}
+
+/* Make the process sleep for SECONDS seconds, or until a signal arrives
+   and is not ignored.  The function returns the number of seconds less
+   than SECONDS which it actually slept (zero if it slept the full time).
+   If a signal handler does a `longjmp' or modifies the handling of the
+   SIGALRM signal while inside `sleep' call, the handling of the SIGALRM
+   signal afterwards is undefined.  There is no return value to indicate
+   error, but if `sleep' returns SECONDS, it probably didn't work.  */
+unsigned int
+DEFUN(sleep, (seconds), unsigned int seconds)
+{
+  unsigned int remaining, slept;
+  time_t before, after;
+  sigset_t set, oset;
+  struct sigaction act, oact;
+  int save = errno;
+
+  if (seconds == 0)
+    return 0;
+
+  /* Block SIGALRM signals while frobbing the handler.  */
+  if (sigemptyset (&set) < 0 ||
+      sigaddset (&set, SIGALRM) < 0 ||
+      sigprocmask (SIG_BLOCK, &set, &oset))
+    return seconds;
+
+  act.sa_handler = sleep_handler;
+  act.sa_flags = 0;
+  if (sigemptyset (&act.sa_mask) < 0 ||
+      sigaction (SIGALRM, &act, &oact) < 0)
+    return seconds;
+
+  before = time ((time_t *) NULL);
+  remaining = alarm (seconds);
+
+  if (remaining > 0 && remaining < seconds)
+    {
+      /* The user's alarm will expire before our own would.
+	 Restore the user's signal action state and let his alarm happen.  */
+      (void) sigaction (SIGALRM, &oact, (struct sigaction *) NULL);
+      alarm (remaining);	/* Restore sooner alarm.  */
+      sigsuspend (&oset);	/* Wait for it to go off.  */
+      after = time ((time_t *) NULL);
+    }
+  else
+    {
+      /* Atomically restore the old signal mask
+	 (which had better not block SIGALRM),
+	 and wait for a signal to arrive.  */
+      sigsuspend (&oset);
+
+      after = time ((time_t *) NULL);
+
+      /* Restore the old signal action state.  */
+      (void) sigaction (SIGALRM, &oact, (struct sigaction *) NULL);
+    }
+
+  /* Notice how long we actually slept.  */
+  slept = after - before;
+
+  /* Restore the user's alarm if we have not already past it.
+     If we have, be sure to turn off the alarm in case a signal
+     other than SIGALRM was what woke us up.  */
+  (void) alarm (remaining > slept ? remaining - slept : 0);
+
+  /* Restore the original signal mask.  */
+  (void) sigprocmask (SIG_SETMASK, &oset, (sigset_t *) NULL);
+
+  /* Restore the `errno' value we started with.
+     Some of the calls we made might have failed, but we didn't care.  */
+  errno = save;
+
+  return slept > seconds ? 0 : seconds - slept;
+}
diff --git a/sysdeps/posix/stdio_init.c b/sysdeps/posix/stdio_init.c
new file mode 100644
index 0000000000..422d9b69ef
--- /dev/null
+++ b/sysdeps/posix/stdio_init.c
@@ -0,0 +1,70 @@
+/* Copyright (C) 1991, 1992, 1993, 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+/* Initialize STREAM as necessary.
+   This may change I/O functions, give a buffer, etc.
+   If no buffer is allocated, but the bufsize is set,
+   the bufsize will be used to allocate the buffer.  */
+void
+DEFUN(__stdio_init_stream, (stream), FILE *stream)
+{
+  register CONST int fd = (int) stream->__cookie;
+  struct stat statb;
+
+  if (stream->__buffer != NULL || stream->__userbuf)
+    /* If's unbuffered by request, we can't do anything useful.  */
+    return;
+
+  /* Find out what sort of file this is.  */
+  if (__fstat (fd, &statb) < 0)
+      return;
+
+  if (S_ISCHR (statb.st_mode))
+    {
+      /* It's a character device.
+	 Make it line-buffered if it's a terminal.  */
+      if (__isatty (fd))
+	{
+	  stream->__linebuf = 1;
+
+	  /* Unix terminal devices have the bad habit of claiming to be
+	     seekable.  On systems I have tried, seeking on a terminal
+	     device seems to set its file position as specified, such that
+	     a later tell says the same thing.  This is in no way related
+	     to actual seekability--the ability to seek back and read old
+	     data.  Unix terminal devices will let you "seek back", and
+	     then read more new data from the terminal.  I can think of
+	     nothing to do about this lossage except to preemptively disable
+	     seeking on terminal devices.  */
+
+	  stream->__io_funcs.__seek = NULL; /* Seeks get ESPIPE.  */
+	}
+    }
+  
+#ifdef	_STATBUF_ST_BLKSIZE
+  /* Use the block-size field to determine
+     the system's optimal buffering size.  */
+  stream->__bufsize = statb.st_blksize;
+#endif
+}
diff --git a/sysdeps/posix/sysconf.c b/sysdeps/posix/sysconf.c
new file mode 100644
index 0000000000..7f4fbb7261
--- /dev/null
+++ b/sysdeps/posix/sysconf.c
@@ -0,0 +1,183 @@
+/* Copyright (C) 1991, 1993, 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <errno.h>
+#include <limits.h>
+#include <unistd.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <time.h>
+
+extern int EXFUN(__getdtablesize, (NOARGS));
+extern size_t EXFUN(__getpagesize, (NOARGS));
+
+/* Get the value of the system variable NAME.  */
+long int
+DEFUN(__sysconf, (name), int name)
+{
+  switch (name)
+    {
+    default:
+      errno = EINVAL;
+      return -1;
+
+    case _SC_ARG_MAX:
+#ifdef	ARG_MAX
+      return ARG_MAX;
+#else
+      return -1;
+#endif
+
+    case _SC_CHILD_MAX:
+#ifdef	CHILD_MAX
+      return CHILD_MAX;
+#else
+      return -1;
+#endif
+
+    case _SC_CLK_TCK:
+      return 60;
+
+    case _SC_NGROUPS_MAX:
+#ifdef	NGROUPS_MAX
+      return NGROUPS_MAX;
+#else
+      return -1;
+#endif
+
+    case _SC_OPEN_MAX:
+      return __getdtablesize ();
+
+    case _SC_STREAM_MAX:
+      return FOPEN_MAX;
+
+    case _SC_TZNAME_MAX:
+      return __tzname_max ();
+
+    case _SC_JOB_CONTROL:
+#ifdef	_POSIX_JOB_CONTROL
+      return 1;
+#else
+      return -1;
+#endif
+    case _SC_SAVED_IDS:
+#ifdef	_POSIX_SAVED_IDS
+      return 1;
+#else
+      return -1;
+#endif
+    case _SC_VERSION:
+      return _POSIX_VERSION;
+
+    case _SC_PAGESIZE:
+      return __getpagesize ();
+
+    case _SC_BC_BASE_MAX:
+#ifdef	BC_BASE_MAX
+      return BC_BASE_MAX;
+#else
+      return -1;
+#endif
+
+    case _SC_BC_DIM_MAX:
+#ifdef	BC_DIM_MAX
+      return BC_DIM_MAX;
+#else
+      return -1;
+#endif
+
+    case _SC_BC_SCALE_MAX:
+#ifdef	BC_SCALE_MAX
+      return BC_SCALE_MAX;
+#else
+      return -1;
+#endif
+
+    case _SC_BC_STRING_MAX:
+#ifdef	BC_STRING_MAX
+      return BC_STRING_MAX;
+#else
+      return -1;
+#endif
+
+    case _SC_EQUIV_CLASS_MAX:
+#ifdef	EQUIV_CLASS_MAX
+      return EQUIV_CLASS_MAX;
+#else
+      return -1;
+#endif
+
+    case _SC_EXPR_NEST_MAX:
+#ifdef	EXPR_NEST_MAX
+      return EXPR_NEST_MAX;
+#else
+      return -1;
+#endif
+
+    case _SC_LINE_MAX:
+#ifdef	LINE_MAX
+      return LINE_MAX;
+#else
+      return -1;
+#endif
+
+    case _SC_RE_DUP_MAX:
+#ifdef	RE_DUP_MAX
+      return RE_DUP_MAX;
+#else
+      return -1;
+#endif
+
+
+    case _SC_2_VERSION:
+      /* This is actually supposed to return the version
+	 of the 1003.2 utilities on the system {POSIX2_VERSION}.  */
+      return _POSIX2_C_VERSION;
+
+    case _SC_2_C_BIND:
+#ifdef	_POSIX2_C_BIND
+      return _POSIX2_C_BIND;
+#else
+      return -1;
+#endif
+
+    case _SC_2_C_DEV:
+#ifdef	_POSIX2_C_DEV
+      return _POSIX2_C_DEV;
+#else
+      return -1;
+#endif
+
+    case _SC_2_FORT_DEV:
+#ifdef	_POSIX2_FORT_DEV
+      return _POSIX2_FORT_DEV;
+#else
+      return -1;
+#endif
+
+    case _SC_2_SW_DEV:
+#ifdef	_POSIX2_SW_DEV
+      return _POSIX2_SW_DEV;
+#else
+      return -1;
+#endif
+    }
+}
+
+weak_alias (__sysconf, sysconf)
diff --git a/sysdeps/posix/system.c b/sysdeps/posix/system.c
new file mode 100644
index 0000000000..69b004bb41
--- /dev/null
+++ b/sysdeps/posix/system.c
@@ -0,0 +1,145 @@
+/* Copyright (C) 1991, 1992, 1994 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/wait.h>
+#include <signal.h>
+#include <sys/types.h>
+
+
+#ifndef	HAVE_GNU_LD
+#define	__environ	environ
+#endif
+
+#define	SHELL_PATH	"/bin/sh"	/* Path of the shell.  */
+#define	SHELL_NAME	"sh"		/* Name to give it.  */
+
+/* Execute LINE as a shell command, returning its status.  */
+int
+DEFUN(system, (line), register CONST char *line)
+{
+  int status, save;
+  pid_t pid;
+  struct sigaction sa, intr, quit;
+#ifndef WAITPID_CANNOT_BLOCK_SIGCHLD
+  sigset_t block, omask;
+#endif
+
+  if (line == NULL)
+    return 1;
+
+  sa.sa_handler = SIG_IGN;
+  sa.sa_flags = 0;
+  __sigemptyset (&sa.sa_mask);
+
+  if (__sigaction (SIGINT, &sa, &intr) < 0)
+    return -1;
+  if (__sigaction (SIGQUIT, &sa, &quit) < 0)
+    {
+      save = errno;
+      (void) __sigaction (SIGINT, &intr, (struct sigaction *) NULL);
+      errno = save;
+      return -1;
+    }
+
+#ifndef WAITPID_CANNOT_BLOCK_SIGCHLD
+
+/* SCO 3.2v4 has a bug where `waitpid' will never return if SIGCHLD is
+   blocked.  This makes it impossible for `system' to be implemented in
+   compliance with POSIX.2-1992.  They have acknowledged that this is a bug
+   but I have not seen nor heard of any forthcoming fix.  */
+
+  __sigemptyset (&block);
+  __sigaddset (&block, SIGCHLD);
+  save = errno;
+  if (__sigprocmask (SIG_BLOCK, &block, &omask) < 0)
+    {
+      if (errno == ENOSYS)
+	errno = save;
+      else
+	{
+	  save = errno;
+	  (void) __sigaction (SIGINT, &intr, (struct sigaction *) NULL);
+	  (void) __sigaction (SIGQUIT, &quit, (struct sigaction *) NULL);
+	  errno = save;
+	  return -1;
+	}
+    }
+#define UNBLOCK	__sigprocmask (SIG_SETMASK, &omask, (sigset_t *) NULL)
+#else
+#define UNBLOCK 0
+#endif
+
+  pid = __vfork ();
+  if (pid == (pid_t) 0)
+    {
+      /* Child side.  */
+      CONST char *new_argv[4];
+      new_argv[0] = SHELL_NAME;
+      new_argv[1] = "-c";
+      new_argv[2] = line;
+      new_argv[3] = NULL;
+
+      /* Restore the signals.  */
+      (void) __sigaction (SIGINT, &intr, (struct sigaction *) NULL);
+      (void) __sigaction (SIGQUIT, &quit, (struct sigaction *) NULL);
+      (void) UNBLOCK;
+
+      /* Exec the shell.  */
+      (void) __execve (SHELL_PATH, (char *CONST *) new_argv, __environ);
+      _exit (127);
+    }
+  else if (pid < (pid_t) 0)
+    /* The fork failed.  */
+    status = -1;
+  else
+    /* Parent side.  */
+#ifdef	NO_WAITPID
+    {
+      pid_t child;
+      do
+	{
+	  child = __wait (&status);
+	  if (child <= -1)
+	    {
+	      status = -1;
+	      break;
+	    }
+	} while (child != pid);
+    }
+#else
+    if (__waitpid (pid, &status, 0) != pid)
+      status = -1;
+#endif
+
+  save = errno;
+  if ((__sigaction (SIGINT, &intr, (struct sigaction *) NULL) |
+       __sigaction (SIGQUIT, &quit, (struct sigaction *) NULL) |
+       UNBLOCK) != 0)
+    {
+      if (errno == ENOSYS)
+	errno = save;
+      else
+	return -1;
+    }
+
+  return status;
+}
diff --git a/sysdeps/posix/tempname.c b/sysdeps/posix/tempname.c
new file mode 100644
index 0000000000..f2da66a211
--- /dev/null
+++ b/sysdeps/posix/tempname.c
@@ -0,0 +1,208 @@
+/* Copyright (C) 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <errno.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+/* Return nonzero if DIR is an existent directory.  */
+static int
+DEFUN(diraccess, (dir), CONST char *dir)
+{
+  struct stat buf;
+  return __stat (dir, &buf) == 0 && S_ISDIR (buf.st_mode);
+}
+
+/* Return nonzero if FILE exists.  */
+static int
+DEFUN(exists, (file), CONST char *file)
+{
+  /* We can stat the file even if we can't read its data.  */
+  struct stat st;
+  int save = errno;
+  if (__stat (file, &st) == 0)
+    return 1;
+  else
+    {
+      /* We report that the file exists if stat failed for a reason other
+	 than nonexistence.  In this case, it may or may not exist, and we
+	 don't know; but reporting that it does exist will never cause any
+	 trouble, while reporting that it doesn't exist when it does would
+	 violate the interface of __stdio_gen_tempname.  */
+      int exists = errno != ENOENT;
+      errno = save;
+      return exists;
+    }
+}
+
+
+/* These are the characters used in temporary filenames.  */
+static CONST char letters[] =
+  "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
+
+/* Generate a temporary filename and return it (in a static buffer).  If
+   STREAMPTR is not NULL, open a stream "w+b" on the file and set
+   *STREAMPTR to it.  If DIR_SEARCH is nonzero, DIR and PFX are used as
+   described for tempnam.  If not, a temporary filename in P_tmpdir with no
+   special prefix is generated.  If LENPTR is not NULL, *LENPTR is set the
+   to length (including the terminating '\0') of the resultant filename,
+   which is returned.  This goes through a cyclic pattern of all possible
+   filenames consisting of five decimal digits of the current pid and three
+   of the characters in `letters'.  Data for tempnam and tmpnam is kept
+   separate, but when tempnam is using P_tmpdir and no prefix (i.e, it is
+   identical to tmpnam), the same data is used.  Each potential filename is
+   tested for an already-existing file of the same name, and no name of an
+   existing file will be returned.  When the cycle reaches its end
+   (12345ZZZ), NULL is returned.  */
+char *
+DEFUN(__stdio_gen_tempname, (dir, pfx, dir_search, lenptr, streamptr),
+      CONST char *dir AND CONST char *pfx AND
+      int dir_search AND size_t *lenptr AND
+      FILE **streamptr)
+{
+  int saverrno = errno;
+  static CONST char tmpdir[] = P_tmpdir;
+  static size_t indices[2];
+  size_t *idx;
+  static char buf[FILENAME_MAX];
+  static pid_t oldpid = (pid_t) 0;
+  pid_t pid = __getpid();
+  register size_t len, plen, dlen;
+
+  if (dir_search)
+    {
+      register CONST char *d = getenv ("TMPDIR");
+      if (d != NULL && !diraccess (d))
+	d = NULL;
+      if (d == NULL && dir != NULL && diraccess (dir))
+	d = dir;
+      if (d == NULL && diraccess (tmpdir))
+	d = tmpdir;
+      if (d == NULL && diraccess ("/tmp"))
+	d = "/tmp";
+      if (d == NULL)
+	{
+	  errno = ENOENT;
+	  return NULL;
+	}
+      dir = d;
+    }
+  else
+    dir = tmpdir;
+
+  dlen = strlen (dir);
+
+ /* Remove trailing slashes from the directory name.  */
+  while (dlen > 1 && dir[dlen - 1] == '/')
+    --dlen;
+
+  if (pfx != NULL && *pfx != '\0')
+    {
+      plen = strlen (pfx);
+      if (plen > 5)
+	plen = 5;
+    }
+  else
+    plen = 0;
+
+  if (dir != tmpdir && !strcmp (dir, tmpdir))
+    dir = tmpdir;
+  idx = &indices[(plen == 0 && dir == tmpdir) ? 1 : 0];
+
+  if (pid != oldpid)
+    {
+      oldpid = pid;
+      indices[0] = indices[1] = 0;
+    }
+
+  len = dlen + 1 + plen + 5 + 3;
+  while (*idx < ((sizeof (letters) - 1) * (sizeof (letters) - 1) *
+		 (sizeof (letters) - 1)))
+    {
+      const size_t i = (*idx)++;
+
+      /* Construct a file name and see if it already exists.
+
+	 We use a single counter in *IDX to cycle each of three
+	 character positions through each of 62 possible letters.  */
+
+      if (sizeof (buf) < len ||
+	  sprintf (buf, "%.*s/%.*s%.5d%c%c%c",
+		   (int) dlen, dir, (int) plen,
+		   pfx, pid % 100000,
+		   letters[i % (sizeof (letters) - 1)],
+		   letters[(i / (sizeof (letters) - 1))
+			   % (sizeof (letters) - 1)],
+		   letters[(i / ((sizeof (letters) - 1) *
+				 (sizeof (letters) - 1)))
+			   % (sizeof (letters) - 1)]
+		   ) != (int) len)
+	return NULL;
+
+      if (streamptr != NULL)
+	{
+	  /* Try to create the file atomically.  */
+	  int fd = __open (buf, O_RDWR|O_CREAT|O_EXCL, 0666);
+	  if (fd >= 0)
+	    {
+	      /* We got a new file that did not previously exist.
+		 Create a stream for it.  */
+	      *streamptr = __newstream ();
+	      if (*streamptr == NULL)
+		{
+		  /* We lost trying to create a stream (out of memory?).
+		     Nothing to do but remove the file, close the descriptor,
+		     and return failure.  */
+		  const int save = errno;
+		  (void) remove (buf);
+		  (void) __close (fd);
+		  errno = save;
+		  return NULL;
+		}
+	      (*streamptr)->__cookie = (PTR) (long int) fd;
+	      (*streamptr)->__mode.__write = 1;
+	      (*streamptr)->__mode.__read = 1;
+	      (*streamptr)->__mode.__binary = 1;
+	    }
+	  else
+	    continue;
+	}
+      else if (exists (buf))
+	continue;
+
+      /* If the file already existed we have continued the loop above,
+	 so we only get here when we have a winning name to return.  */
+
+      errno = saverrno;
+
+      if (lenptr != NULL)
+	*lenptr = len + 1;
+      return buf;
+    }
+
+  /* We got out of the loop because we ran out of combinations to try.  */
+  errno = EEXIST;		/* ? */
+  return NULL;
+}
diff --git a/sysdeps/posix/truncate.c b/sysdeps/posix/truncate.c
new file mode 100644
index 0000000000..9fe0d86a0a
--- /dev/null
+++ b/sysdeps/posix/truncate.c
@@ -0,0 +1,41 @@
+/* Copyright (C) 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <sys/types.h>
+#include <errno.h>
+#include <unistd.h>
+
+/* Truncate PATH to LENGTH bytes.  */
+int
+DEFUN(truncate, (path, length),
+      CONST char *path AND off_t length)
+{
+  int fd, ret, save;
+
+  fd = open (path, O_WRONLY);
+  if (fd < 0)
+    return -1;
+
+  ret = ftruncate (fd, length);
+  save = errno;
+  (void) close (fd);
+  if (ret < 0)
+    errno = save;
+  return ret;
+}
diff --git a/sysdeps/posix/ttyname.c b/sysdeps/posix/ttyname.c
new file mode 100644
index 0000000000..50e3c79341
--- /dev/null
+++ b/sysdeps/posix/ttyname.c
@@ -0,0 +1,82 @@
+/* Copyright (C) 1991, 1992, 1993 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <errno.h>
+#include <limits.h>
+#include <stddef.h>
+#include <dirent.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <string.h>
+#include <stdlib.h>
+
+char *__ttyname = NULL;
+
+/* Return the pathname of the terminal FD is open on, or NULL on errors.
+   The returned storage is good only until the next call to this function.  */
+char *
+DEFUN(ttyname, (fd), int fd)
+{
+  static CONST char dev[] = "/dev";
+  static char *name;
+  static size_t namelen = 0;
+  struct stat st;
+  dev_t mydev;
+  ino_t myino;
+  DIR *dirstream;
+  struct dirent *d;
+  int save = errno;
+
+  if (fstat (fd, &st) < 0)
+    return NULL;
+  mydev = st.st_dev;
+  myino = st.st_ino;
+
+  dirstream = opendir (dev);
+  if (dirstream == NULL)
+    return NULL;
+
+  while ((d = readdir (dirstream)) != NULL)
+    if (d->d_fileno == myino)
+      {
+	if (sizeof (dev) + d->d_namlen + 1 > namelen)
+	  {
+	    free (name);
+	    namelen = 2 * (sizeof (dev) + d->d_namlen + 1); /* Big enough.  */
+	    name = malloc (namelen);
+	    if (! name)
+	      return NULL;
+	    (void) memcpy (name, dev, sizeof (dev) - 1);
+	    name[sizeof (dev) - 1] = '/';
+	  }
+	(void) memcpy (&name[sizeof (dev)], d->d_name, d->d_namlen + 1);
+	if (stat (name, &st) == 0 && st.st_dev == mydev)
+	  {
+	    (void) closedir (dirstream);
+	    __ttyname = name;
+	    errno = save;
+	    return name;
+	  }
+      }
+
+  (void) closedir (dirstream);
+  errno = save;
+  return NULL;
+}
diff --git a/sysdeps/posix/wait.c b/sysdeps/posix/wait.c
new file mode 100644
index 0000000000..38891c7e01
--- /dev/null
+++ b/sysdeps/posix/wait.c
@@ -0,0 +1,31 @@
+/* Copyright (C) 1991, 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <sys/wait.h>
+
+
+/* Wait for a child to die.  When one does, put its status in *STAT_LOC
+   and return its process ID.  For errors, return (pid_t) -1.  */
+__pid_t
+DEFUN(__wait, (stat_loc), __WAIT_STATUS_DEFN stat_loc)
+{
+  return __waitpid(WAIT_ANY, (int *) stat_loc, 0);
+}
+
+weak_alias (__wait, wait)
diff --git a/sysdeps/posix/wait3.c b/sysdeps/posix/wait3.c
new file mode 100644
index 0000000000..5eb084a7c9
--- /dev/null
+++ b/sysdeps/posix/wait3.c
@@ -0,0 +1,42 @@
+/* Copyright (C) 1992, 1993, 1995 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <errno.h>
+#include <sys/wait.h>
+#include <sys/types.h>
+#include <stddef.h>
+
+/* Wait for a child to exit.  When one does, put its status in *STAT_LOC and
+   return its process ID.  For errors return (pid_t) -1.  If USAGE is not nil,
+   store information about the child's resource usage (as a `struct rusage')
+   there.  If the WUNTRACED bit is set in OPTIONS, return status for stopped
+   children; otherwise don't.  */
+pid_t
+DEFUN(__wait3, (stat_loc, options, usage),
+      __WAIT_STATUS_DEFN stat_loc AND int options AND struct rusage *usage)
+{
+  if (usage != NULL)
+    {
+      errno = ENOSYS;
+      return (pid_t) -1;
+    }
+  return __waitpid (WAIT_ANY, stat_loc, options);
+}
+
+weak_alias (__wait3, wait3)
diff --git a/sysdeps/posix/writev.c b/sysdeps/posix/writev.c
new file mode 100644
index 0000000000..56e29a64b9
--- /dev/null
+++ b/sysdeps/posix/writev.c
@@ -0,0 +1,64 @@
+/* Copyright (C) 1991, 1992 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <sys/uio.h>
+
+/* Write data pointed by the buffers described by VECTOR, which
+   is a vector of COUNT `struct iovec's, to file descriptor FD.
+   The data is written in the order specified.
+   Operates just like `write' (see <unistd.h>) except that the data
+   are taken from VECTOR instead of a contiguous buffer.  */
+int
+DEFUN(writev, (fd, vector, count),
+      int fd AND CONST struct iovec *vector AND size_t count)
+{
+  char *buffer;
+  register char *bp;
+  size_t bytes, to_copy;
+  register size_t i;
+
+  /* Find the total number of bytes to be written.  */
+  bytes = 0;
+  for (i = 0; i < count; ++i)
+    bytes += vector[i].iov_len;
+
+  /* Allocate a temporary buffer to hold the data.  */
+  buffer = (char *) __alloca(bytes);
+
+  /* Copy the data into BUFFER.  */
+  to_copy = bytes;
+  bp = buffer;
+  for (i = 0; i < count; ++i)
+    {
+#define	min(a, b)	((a) > (b) ? (b) : (a))
+      size_t copy = min(vector[i].iov_len, to_copy);
+
+      (void) memcpy((PTR) bp, (PTR) vector[i].iov_base, copy);
+
+      bp += copy;
+      to_copy -= copy;
+      if (bytes == 0)
+	break;
+    }
+
+  return write(fd, buffer, bytes);
+}