More cleanups. Fix things so tinylogin compiles.

Fix a bug in getdelim -- patch from David Whedon <dwhedon@gordian.com>.

25 files changed, 1640 insertions, 23 deletions

diff --git a/libc/inet/resolv.c b/libc/inet/resolv.c
index ae23064bb..7b367ed4c 100644
--- a/libc/inet/resolv.c
+++ b/libc/inet/resolv.c
@@ -689,12 +689,12 @@ int resolve_mailbox(const char *address,
 #endif
 
 extern int nameservers;
-extern const char *__const nameserver[3];
+extern const char *nameserver[3];
 
 #ifdef L_opennameservers
 
 int nameservers;
-const char *__const nameserver[3];
+const char * nameserver[3];
 
 int open_nameservers()
 {
diff --git a/libc/misc/Makefile b/libc/misc/Makefile
index 7ff8da188..dcd40319c 100644
--- a/libc/misc/Makefile
+++ b/libc/misc/Makefile
@@ -20,12 +20,12 @@
 # other sundry sources.  Files within this library are copyright by their
 # respective copyright holders.
 
+TOPDIR=../
+include $(TOPDIR)Rules.mak
+LIBC=$(TOPDIR)libc.a
 
-DIRS = assert crypt fnmatch glob internals lsearch mntent syslog regex shm time
 
-ifeq ($(USE_CTYPE_C_FUNCTIONS),true)
-    DIRS+=ctype
-endif
+DIRS = assert crypt ctype fnmatch glob internals lsearch mntent syslog regex shm time
 
 all: libc.a
 
diff --git a/libc/misc/ctype/ctype.c b/libc/misc/ctype/ctype.c
index 78e1f8891..1063f443d 100644
--- a/libc/misc/ctype/ctype.c
+++ b/libc/misc/ctype/ctype.c
@@ -6,6 +6,7 @@
  * under the GNU Library General Public License.
  */
 
+#define USE_CTYPE_C_FUNCTIONS
 #include <ctype.h>
 
 int
diff --git a/libc/misc/lock/.indent.pro b/libc/misc/lock/.indent.pro
new file mode 100644
index 000000000..492ecf1c7
--- /dev/null
+++ b/libc/misc/lock/.indent.pro
@@ -0,0 +1,33 @@
+--blank-lines-after-declarations
+--blank-lines-after-procedures
+--break-before-boolean-operator
+--no-blank-lines-after-commas
+--braces-on-if-line
+--braces-on-struct-decl-line
+--comment-indentation25
+--declaration-comment-column25
+--no-comment-delimiters-on-blank-lines
+--cuddle-else
+--continuation-indentation4
+--case-indentation0
+--else-endif-column33
+--space-after-cast
+--line-comments-indentation0
+--declaration-indentation1
+--dont-format-first-column-comments
+--dont-format-comments
+--honour-newlines
+--indent-level4
+/* changed from 0 to 4 */
+--parameter-indentation4
+--line-length78 /* changed from 75 */
+--continue-at-parentheses
+--no-space-after-function-call-names
+--dont-break-procedure-type
+--dont-star-comments
+--leave-optional-blank-lines
+--dont-space-special-semicolon
+--tab-size4
+/* additions by Mark */
+--case-brace-indentation0
+--leave-preprocessor-space
diff --git a/libc/misc/lock/Makefile b/libc/misc/lock/Makefile
new file mode 100644
index 000000000..e319c11df
--- /dev/null
+++ b/libc/misc/lock/Makefile
@@ -0,0 +1,44 @@
+# Makefile for uCLibc
+#
+# Copyright (C) 2000 by Lineo, inc.
+#
+# This program 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.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program; if not, write to the Free Software Foundation, Inc., 59 Temple
+# Place, Suite 330, Boston, MA 02111-1307 USA
+#
+# Derived in part from the Linux-8086 C library, the GNU C Library, and several
+# other sundry sources.  Files within this library are copyright by their
+# respective copyright holders.
+
+TOPDIR=../../
+include $(TOPDIR)Rules.mak
+LIBC=$(TOPDIR)libc.a
+
+CSRC=flock.c
+COBJS=$(patsubst %.c,%.o, $(CSRC))
+OBJS=$(COBJS)
+
+all: $(OBJS) $(LIBC)
+
+$(LIBC): ar-target
+
+ar-target: $(OBJS)
+	$(AR) $(ARFLAGS) $(LIBC) $(OBJS)
+
+$(COBJS):
+	$(CC) $(CFLAGS) $< -c $*.c -o $*.o
+	$(STRIPTOOL) -x -R .note -R .comment $*.o
+
+clean:
+	rm -f *.[oa] *~ core
+
diff --git a/libc/misc/lock/flock.c b/libc/misc/lock/flock.c
new file mode 100644
index 000000000..3c1264655
--- /dev/null
+++ b/libc/misc/lock/flock.c
@@ -0,0 +1,54 @@
+/* Copyright (C) 1992, 1995, 1996, 1997 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., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, 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 <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 flock( int fd, 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);
+}
+
diff --git a/libc/misc/time/Makefile b/libc/misc/time/Makefile
index 0d24f43e4..70ee192c4 100644
--- a/libc/misc/time/Makefile
+++ b/libc/misc/time/Makefile
@@ -26,7 +26,7 @@ LIBC=$(TOPDIR)libc.a
 
 CSRC=localtime.c gmtime.c asctime.c ctime.c asc_conv.c tm_conv.c mktime.c \
 	localtime_r.c gmtime_r.c asctime_r.c ctime_r.c utimes.c adjtime.c \
-	strftime.c
+	strftime.c clock.c times.c difftime.c
 COBJS=$(patsubst %.c,%.o, $(CSRC))
 OBJS=$(COBJS)
 
diff --git a/libc/misc/time/clock.c b/libc/misc/time/clock.c
new file mode 100644
index 000000000..4d1a17869
--- /dev/null
+++ b/libc/misc/time/clock.c
@@ -0,0 +1,45 @@
+/* Copyright (C) 1991, 1992, 1996, 1999 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., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <sys/times.h>
+#include <time.h>
+#include <unistd.h>
+
+/* Return the time used by the program so far (user time + system time).  */
+clock_t
+clock (void)
+{
+  struct tms buf;
+  long clk_tck = sysconf (_SC_CLK_TCK);
+
+  /* We don't check for errors here.  The only error the kernel
+     returns is EFAULT if the value cannot be written to the struct we
+     pass a pointer to.  Otherwise the kernel returns an `unsigned
+     long' value which is the number of jiffies since system start.
+     But this number can be negative (when read as `long') when the
+     system is up for some time.  Ignoring errors should therefore
+     have no negative impacts but solve the problem.  */
+  times (&buf);
+
+  return
+    (clk_tck <= CLOCKS_PER_SEC)
+    ? ((unsigned long) buf.tms_utime + buf.tms_stime) * (CLOCKS_PER_SEC
+							 / clk_tck)
+    : ((unsigned long) buf.tms_utime + buf.tms_stime) / (clk_tck
+							 / CLOCKS_PER_SEC);
+}
diff --git a/libc/misc/time/difftime.c b/libc/misc/time/difftime.c
new file mode 100644
index 000000000..6a9b708ea
--- /dev/null
+++ b/libc/misc/time/difftime.c
@@ -0,0 +1,67 @@
+/* Copyright (C) 1991, 1994, 1996 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., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <time.h>
+#include <limits.h>
+#include <sys/types.h>
+
+
+/* Return the difference between TIME1 and TIME0.  */
+double
+difftime (time1, time0)
+     time_t time1;
+     time_t time0;
+{
+  /* Algorithm courtesy Paul Eggert (eggert@twinsun.com).  */
+
+  time_t delta, hibit;
+
+  if (sizeof (time_t) < sizeof (double))
+    return (double) time1 - (double) time0;
+  if (sizeof (time_t) < sizeof (long double))
+    return (long double) time1 - (long double) time0;
+
+  if (time1 < time0)
+    return - difftime (time0, time1);
+
+  /* As much as possible, avoid loss of precision by computing the
+    difference before converting to double.  */
+  delta = time1 - time0;
+  if (delta >= 0)
+    return delta;
+
+  /* Repair delta overflow.  */
+  hibit = (~ (time_t) 0) << ((sizeof (time_t) * CHAR_BIT) - 1);
+
+  /* The following expression rounds twice, which means the result may not
+     be the closest to the true answer.  For example, suppose time_t is
+     64-bit signed int, long_double is IEEE 754 double with default
+     rounding, time1 = 9223372036854775807 and time0 = -1536.  Then the
+     true difference is 9223372036854777343, which rounds to
+     9223372036854777856 with a total error of 513.  But delta overflows to
+     -9223372036854774273, which rounds to -9223372036854774784, and
+     correcting this by subtracting 2 * (long_double) hibit (i.e. by adding
+     2**64 = 18446744073709551616) yields 9223372036854776832, which rounds
+     to 9223372036854775808 with a total error of 1535 instead.  This
+     problem occurs only with very large differences.  It's too painful to
+     fix this portably.  We are not alone in this problem; many C compilers
+     round twice when converting large unsigned types to small floating
+     types, so if time_t is unsigned the "return delta" above has the same
+     double-rounding problem.  */
+  return delta - 2 * (long double) hibit;
+}
diff --git a/libc/pwd_grp/Makefile b/libc/pwd_grp/Makefile
index 5b5218c27..cc0ff909a 100644
--- a/libc/pwd_grp/Makefile
+++ b/libc/pwd_grp/Makefile
@@ -26,7 +26,7 @@ LIBC=$(TOPDIR)libc.a
 
 CSRC=__getpwent.c pwent.c getpwnam.c getpwuid.c putpwent.c getpw.c fgetpwent.c \
 	__getgrent.c grent.c getgrnam.c getgrgid.c fgetgrent.c initgroups.c \
-	utent.c
+	utent.c getpass.c
 COBJS=$(patsubst %.c,%.o, $(CSRC))
 OBJS=$(COBJS)
 
diff --git a/libc/signal/Makefile b/libc/signal/Makefile
index 5de28d7f0..8d21168a1 100644
--- a/libc/signal/Makefile
+++ b/libc/signal/Makefile
@@ -25,8 +25,7 @@ include $(TOPDIR)Rules.mak
 LIBC=$(TOPDIR)libc.a
 
 CSRC=bsd_sig.c raise.c sigblock.c siggtmsk.c sigjmp.c signal.c \
-	sigpause.c sigstmsk.c sigaddset.c sigdelset.c \
-	sigismem.c sigemptyset.c
+	sigpause.c sigstmsk.c sigaddset.c sigdelset.c sigismem.c sigemptyset.c
 COBJS=$(patsubst %.c,%.o, $(CSRC))
 
 OBJS=$(COBJS)
diff --git a/libc/signal/sigaddset.c b/libc/signal/sigaddset.c
index e6848a76d..ec1c96e9b 100644
--- a/libc/signal/sigaddset.c
+++ b/libc/signal/sigaddset.c
@@ -18,8 +18,6 @@
 
 #include <errno.h>
 #include <features.h>
-#define _EXTERN_INLINE
-#define __USE_EXTERN_INLINES   1
 #include "signal.h"
 
 
diff --git a/libc/signal/sigdelset.c b/libc/signal/sigdelset.c
index 6206e7d39..daa545624 100644
--- a/libc/signal/sigdelset.c
+++ b/libc/signal/sigdelset.c
@@ -17,8 +17,6 @@
    Boston, MA 02111-1307, USA.  */
 
 #include "errno.h"
-#define _EXTERN_INLINE
-#define __USE_EXTERN_INLINES   1
 #include "signal.h"
 
 /* Add SIGNO to SET.  */
diff --git a/libc/stdio/getdelim.c b/libc/stdio/getdelim.c
index 99d48bb32..f8341cb0d 100644
--- a/libc/stdio/getdelim.c
+++ b/libc/stdio/getdelim.c
@@ -58,13 +58,13 @@ size_t getdelim(char **linebuf, size_t *linebufsz, int delimiter, FILE *file)
 				return -1;
 			}
 		}
-		*linebuf[idx++] = (char)ch;
+		(*linebuf)[idx++] = (char)ch;
 		if ((char)ch == delimiter)
 			break;
 	}
 
 	if (idx != 0)
-	    *linebuf[idx] = 0;
+	    (*linebuf)[idx] = 0;
 	return idx;
 }
 
diff --git a/libc/stdlib/malloc/malloc.c b/libc/stdlib/malloc/malloc.c
index 88d8698b2..d7df5d243 100644
--- a/libc/stdlib/malloc/malloc.c
+++ b/libc/stdlib/malloc/malloc.c
@@ -101,13 +101,12 @@ typedef int mutex_t;
 #define mutex_unlock(x)
 #define mutex_init(x)
 #define MUTEX_INITIALIZER 0
+//static mutex_t malloc_lock = MUTEX_INITIALIZER;
 #endif
 
 static int mmalloc_initialized = -1;
  /* -1 == uninitialized, 0 == initializing, 1 == initialized */
 
-static mutex_t malloc_lock = MUTEX_INITIALIZER;
-
 #ifndef MAP_FAILED
 #define MAP_FAILED ((void*)-1)
 #endif
diff --git a/libc/string/strsignal.c b/libc/string/strsignal.c
index 83a862bfb..91895a8ae 100644
--- a/libc/string/strsignal.c
+++ b/libc/string/strsignal.c
@@ -8,6 +8,8 @@
 #include <malloc.h>
 #include <signal.h>
 
+extern char *itoa(int i);
+
 const char *const sys_siglist[] = {
 	"Unknown signal",
 	"Hangup",
diff --git a/libc/sysdeps/linux/common/Makefile b/libc/sysdeps/linux/common/Makefile
index 0c361ba48..8d2b93830 100644
--- a/libc/sysdeps/linux/common/Makefile
+++ b/libc/sysdeps/linux/common/Makefile
@@ -29,7 +29,8 @@ LIBC=$(TOPDIR)libc.a
 CSRC =closedir.o dirfd.o getdents.o getdnnm.o gethstnm.o getpagesize.o \
 	isatty.o kernel_version.o mkfifo.o opendir.o readdir.o rewinddir.o \
 	seekdir.o setegid.o seteuid.o setpgrp.o statfix.o tcgetatr.o tell.o \
-	telldir.o wait.o wait3.o _xmknod.o _fxstat.o _lxstat.o _xstat.o
+	telldir.o wait.o wait3.o _xmknod.o _fxstat.o _lxstat.o _xstat.o \
+	libc_init.o
 COBJS=$(patsubst %.c,%.o, $(CSRC))
 
 
diff --git a/libc/sysdeps/linux/common/syscalls.c b/libc/sysdeps/linux/common/syscalls.c
index c7d4343be..6b18c356d 100644
--- a/libc/sysdeps/linux/common/syscalls.c
+++ b/libc/sysdeps/linux/common/syscalls.c
@@ -44,13 +44,13 @@ _syscall0(pid_t, fork);
 //#define __NR_read             3
 #ifdef L_read
 #include <unistd.h>
-_syscall3(size_t, read, int, fd, char *, buf, size_t, count);
+_syscall3(ssize_t, read, int, fd, __ptr_t, buf, size_t, count);
 #endif
 
 //#define __NR_write            4
 #ifdef L_write
 #include <unistd.h>
-_syscall3(size_t, write, int, fd, const char *, buf, size_t, count);
+_syscall3(ssize_t, write, int, fd, const __ptr_t, buf, size_t, count);
 #endif
 
 //#define __NR_open             5
diff --git a/libc/sysdeps/linux/i386/bits/confname.h b/libc/sysdeps/linux/i386/bits/confname.h
new file mode 100644
index 000000000..229088d67
--- /dev/null
+++ b/libc/sysdeps/linux/i386/bits/confname.h
@@ -0,0 +1,408 @@
+/* `sysconf', `pathconf', and `confstr' NAME values.  Generic version.
+   Copyright (C) 1993, 1995, 1996, 1997, 1998 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., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _UNISTD_H
+# error "Never use <bits/confname.h> directly; include <unistd.h> instead."
+#endif
+
+/* Values for the NAME argument to `pathconf' and `fpathconf'.  */
+enum
+  {
+    _PC_LINK_MAX,
+#define	_PC_LINK_MAX			_PC_LINK_MAX
+    _PC_MAX_CANON,
+#define	_PC_MAX_CANON			_PC_MAX_CANON
+    _PC_MAX_INPUT,
+#define	_PC_MAX_INPUT			_PC_MAX_INPUT
+    _PC_NAME_MAX,
+#define	_PC_NAME_MAX			_PC_NAME_MAX
+    _PC_PATH_MAX,
+#define	_PC_PATH_MAX			_PC_PATH_MAX
+    _PC_PIPE_BUF,
+#define	_PC_PIPE_BUF			_PC_PIPE_BUF
+    _PC_CHOWN_RESTRICTED,
+#define	_PC_CHOWN_RESTRICTED		_PC_CHOWN_RESTRICTED
+    _PC_NO_TRUNC,
+#define	_PC_NO_TRUNC			_PC_NO_TRUNC
+    _PC_VDISABLE,
+#define _PC_VDISABLE			_PC_VDISABLE
+    _PC_SYNC_IO,
+#define	_PC_SYNC_IO			_PC_SYNC_IO
+    _PC_ASYNC_IO,
+#define	_PC_ASYNC_IO			_PC_ASYNC_IO
+    _PC_PRIO_IO,
+#define	_PC_PRIO_IO			_PC_PRIO_IO
+    _PC_SOCK_MAXBUF,
+#define	_PC_SOCK_MAXBUF			_PC_SOCK_MAXBUF
+    _PC_FILESIZEBITS
+#define _PC_FILESIZEBITS		_PC_FILESIZEBITS
+  };
+
+/* Values for the argument to `sysconf'.  */
+enum
+  {
+    _SC_ARG_MAX,
+#define	_SC_ARG_MAX			_SC_ARG_MAX
+    _SC_CHILD_MAX,
+#define	_SC_CHILD_MAX			_SC_CHILD_MAX
+    _SC_CLK_TCK,
+#define	_SC_CLK_TCK			_SC_CLK_TCK
+    _SC_NGROUPS_MAX,
+#define	_SC_NGROUPS_MAX			_SC_NGROUPS_MAX
+    _SC_OPEN_MAX,
+#define	_SC_OPEN_MAX			_SC_OPEN_MAX
+    _SC_STREAM_MAX,
+#define	_SC_STREAM_MAX			_SC_STREAM_MAX
+    _SC_TZNAME_MAX,
+#define	_SC_TZNAME_MAX			_SC_TZNAME_MAX
+    _SC_JOB_CONTROL,
+#define	_SC_JOB_CONTROL			_SC_JOB_CONTROL
+    _SC_SAVED_IDS,
+#define	_SC_SAVED_IDS			_SC_SAVED_IDS
+    _SC_REALTIME_SIGNALS,
+#define	_SC_REALTIME_SIGNALS		_SC_REALTIME_SIGNALS
+    _SC_PRIORITY_SCHEDULING,
+#define	_SC_PRIORITY_SCHEDULING		_SC_PRIORITY_SCHEDULING
+    _SC_TIMERS,
+#define	_SC_TIMERS			_SC_TIMERS
+    _SC_ASYNCHRONOUS_IO,
+#define	_SC_ASYNCHRONOUS_IO		_SC_ASYNCHRONOUS_IO
+    _SC_PRIORITIZED_IO,
+#define	_SC_PRIORITIZED_IO		_SC_PRIORITIZED_IO
+    _SC_SYNCHRONIZED_IO,
+#define	_SC_SYNCHRONIZED_IO		_SC_SYNCHRONIZED_IO
+    _SC_FSYNC,
+#define	_SC_FSYNC			_SC_FSYNC
+    _SC_MAPPED_FILES,
+#define	_SC_MAPPED_FILES		_SC_MAPPED_FILES
+    _SC_MEMLOCK,
+#define	_SC_MEMLOCK			_SC_MEMLOCK
+    _SC_MEMLOCK_RANGE,
+#define	_SC_MEMLOCK_RANGE		_SC_MEMLOCK_RANGE
+    _SC_MEMORY_PROTECTION,
+#define	_SC_MEMORY_PROTECTION		_SC_MEMORY_PROTECTION
+    _SC_MESSAGE_PASSING,
+#define	_SC_MESSAGE_PASSING		_SC_MESSAGE_PASSING
+    _SC_SEMAPHORES,
+#define	_SC_SEMAPHORES			_SC_SEMAPHORES
+    _SC_SHARED_MEMORY_OBJECTS,
+#define	_SC_SHARED_MEMORY_OBJECTS	_SC_SHARED_MEMORY_OBJECTS
+    _SC_AIO_LISTIO_MAX,
+#define	_SC_AIO_LISTIO_MAX		_SC_AIO_LISTIO_MAX
+    _SC_AIO_MAX,
+#define	_SC_AIO_MAX			_SC_AIO_MAX
+    _SC_AIO_PRIO_DELTA_MAX,
+#define	_SC_AIO_PRIO_DELTA_MAX		_SC_AIO_PRIO_DELTA_MAX
+    _SC_DELAYTIMER_MAX,
+#define	_SC_DELAYTIMER_MAX		_SC_DELAYTIMER_MAX
+    _SC_MQ_OPEN_MAX,
+#define	_SC_MQ_OPEN_MAX			_SC_MQ_OPEN_MAX
+    _SC_MQ_PRIO_MAX,
+#define	_SC_MQ_PRIO_MAX			_SC_MQ_PRIO_MAX
+    _SC_VERSION,
+#define	_SC_VERSION			_SC_VERSION
+    _SC_PAGESIZE,
+#define	_SC_PAGESIZE			_SC_PAGESIZE
+#define	_SC_PAGE_SIZE			_SC_PAGESIZE
+    _SC_RTSIG_MAX,
+#define	_SC_RTSIG_MAX			_SC_RTSIG_MAX
+    _SC_SEM_NSEMS_MAX,
+#define	_SC_SEM_NSEMS_MAX		_SC_SEM_NSEMS_MAX
+    _SC_SEM_VALUE_MAX,
+#define	_SC_SEM_VALUE_MAX		_SC_SEM_VALUE_MAX
+    _SC_SIGQUEUE_MAX,
+#define	_SC_SIGQUEUE_MAX		_SC_SIGQUEUE_MAX
+    _SC_TIMER_MAX,
+#define	_SC_TIMER_MAX			_SC_TIMER_MAX
+
+    /* Values for the argument to `sysconf'
+       corresponding to _POSIX2_* symbols.  */
+    _SC_BC_BASE_MAX,
+#define	_SC_BC_BASE_MAX			_SC_BC_BASE_MAX
+    _SC_BC_DIM_MAX,
+#define	_SC_BC_DIM_MAX			_SC_BC_DIM_MAX
+    _SC_BC_SCALE_MAX,
+#define	_SC_BC_SCALE_MAX		_SC_BC_SCALE_MAX
+    _SC_BC_STRING_MAX,
+#define	_SC_BC_STRING_MAX		_SC_BC_STRING_MAX
+    _SC_COLL_WEIGHTS_MAX,
+#define	_SC_COLL_WEIGHTS_MAX		_SC_COLL_WEIGHTS_MAX
+    _SC_EQUIV_CLASS_MAX,
+#define	_SC_EQUIV_CLASS_MAX		_SC_EQUIV_CLASS_MAX
+    _SC_EXPR_NEST_MAX,
+#define	_SC_EXPR_NEST_MAX		_SC_EXPR_NEST_MAX
+    _SC_LINE_MAX,
+#define	_SC_LINE_MAX			_SC_LINE_MAX
+    _SC_RE_DUP_MAX,
+#define	_SC_RE_DUP_MAX			_SC_RE_DUP_MAX
+    _SC_CHARCLASS_NAME_MAX,
+#define	_SC_CHARCLASS_NAME_MAX		_SC_CHARCLASS_NAME_MAX
+
+    _SC_2_VERSION,
+#define	_SC_2_VERSION			_SC_2_VERSION
+    _SC_2_C_BIND,
+#define	_SC_2_C_BIND			_SC_2_C_BIND
+    _SC_2_C_DEV,
+#define	_SC_2_C_DEV			_SC_2_C_DEV
+    _SC_2_FORT_DEV,
+#define	_SC_2_FORT_DEV			_SC_2_FORT_DEV
+    _SC_2_FORT_RUN,
+#define	_SC_2_FORT_RUN			_SC_2_FORT_RUN
+    _SC_2_SW_DEV,
+#define	_SC_2_SW_DEV			_SC_2_SW_DEV
+    _SC_2_LOCALEDEF,
+#define	_SC_2_LOCALEDEF			_SC_2_LOCALEDEF
+
+    _SC_PII,
+#define	_SC_PII				_SC_PII
+    _SC_PII_XTI,
+#define	_SC_PII_XTI			_SC_PII_XTI
+    _SC_PII_SOCKET,
+#define	_SC_PII_SOCKET			_SC_PII_SOCKET
+    _SC_PII_INTERNET,
+#define	_SC_PII_INTERNET		_SC_PII_INTERNET
+    _SC_PII_OSI,
+#define	_SC_PII_OSI			_SC_PII_OSI
+    _SC_POLL,
+#define	_SC_POLL			_SC_POLL
+    _SC_SELECT,
+#define	_SC_SELECT			_SC_SELECT
+    _SC_UIO_MAXIOV,
+#define	_SC_UIO_MAXIOV			_SC_UIO_MAXIOV
+    _SC_PII_INTERNET_STREAM,
+#define	_SC_PII_INTERNET_STREAM		_SC_PII_INTERNET_STREAM
+    _SC_PII_INTERNET_DGRAM,
+#define	_SC_PII_INTERNET_DGRAM		_SC_PII_INTERNET_DGRAM
+    _SC_PII_OSI_COTS,
+#define	_SC_PII_OSI_COTS		_SC_PII_OSI_COTS
+    _SC_PII_OSI_CLTS,
+#define	_SC_PII_OSI_CLTS		_SC_PII_OSI_CLTS
+    _SC_PII_OSI_M,
+#define	_SC_PII_OSI_M			_SC_PII_OSI_M
+    _SC_T_IOV_MAX,
+#define	_SC_T_IOV_MAX			_SC_T_IOV_MAX
+
+    /* Values according to POSIX 1003.1c (POSIX threads).  */
+    _SC_THREADS,
+#define	_SC_THREADS			_SC_THREADS
+    _SC_THREAD_SAFE_FUNCTIONS,
+#define _SC_THREAD_SAFE_FUNCTIONS	_SC_THREAD_SAFE_FUNCTIONS
+    _SC_GETGR_R_SIZE_MAX,
+#define	_SC_GETGR_R_SIZE_MAX		_SC_GETGR_R_SIZE_MAX
+    _SC_GETPW_R_SIZE_MAX,
+#define	_SC_GETPW_R_SIZE_MAX		_SC_GETPW_R_SIZE_MAX
+    _SC_LOGIN_NAME_MAX,
+#define	_SC_LOGIN_NAME_MAX		_SC_LOGIN_NAME_MAX
+    _SC_TTY_NAME_MAX,
+#define	_SC_TTY_NAME_MAX		_SC_TTY_NAME_MAX
+    _SC_THREAD_DESTRUCTOR_ITERATIONS,
+#define	_SC_THREAD_DESTRUCTOR_ITERATIONS _SC_THREAD_DESTRUCTOR_ITERATIONS
+    _SC_THREAD_KEYS_MAX,
+#define	_SC_THREAD_KEYS_MAX		_SC_THREAD_KEYS_MAX
+    _SC_THREAD_STACK_MIN,
+#define	_SC_THREAD_STACK_MIN		_SC_THREAD_STACK_MIN
+    _SC_THREAD_THREADS_MAX,
+#define	_SC_THREAD_THREADS_MAX		_SC_THREAD_THREADS_MAX
+    _SC_THREAD_ATTR_STACKADDR,
+#define	_SC_THREAD_ATTR_STACKADDR	_SC_THREAD_ATTR_STACKADDR
+    _SC_THREAD_ATTR_STACKSIZE,
+#define	_SC_THREAD_ATTR_STACKSIZE	_SC_THREAD_ATTR_STACKSIZE
+    _SC_THREAD_PRIORITY_SCHEDULING,
+#define	_SC_THREAD_PRIORITY_SCHEDULING	_SC_THREAD_PRIORITY_SCHEDULING
+    _SC_THREAD_PRIO_INHERIT,
+#define	_SC_THREAD_PRIO_INHERIT		_SC_THREAD_PRIO_INHERIT
+    _SC_THREAD_PRIO_PROTECT,
+#define	_SC_THREAD_PRIO_PROTECT		_SC_THREAD_PRIO_PROTECT
+    _SC_THREAD_PROCESS_SHARED,
+#define	_SC_THREAD_PROCESS_SHARED	_SC_THREAD_PROCESS_SHARED
+
+    _SC_NPROCESSORS_CONF,
+#define _SC_NPROCESSORS_CONF		_SC_NPROCESSORS_CONF
+    _SC_NPROCESSORS_ONLN,
+#define _SC_NPROCESSORS_ONLN		_SC_NPROCESSORS_ONLN
+    _SC_PHYS_PAGES,
+#define _SC_PHYS_PAGES			_SC_PHYS_PAGES
+    _SC_AVPHYS_PAGES,
+#define _SC_AVPHYS_PAGES		_SC_AVPHYS_PAGES
+    _SC_ATEXIT_MAX,
+#define _SC_ATEXIT_MAX			_SC_ATEXIT_MAX
+    _SC_PASS_MAX,
+#define _SC_PASS_MAX			_SC_PASS_MAX
+
+    _SC_XOPEN_VERSION,
+#define _SC_XOPEN_VERSION		_SC_XOPEN_VERSION
+    _SC_XOPEN_XCU_VERSION,
+#define _SC_XOPEN_XCU_VERSION		_SC_XOPEN_XCU_VERSION
+    _SC_XOPEN_UNIX,
+#define _SC_XOPEN_UNIX			_SC_XOPEN_UNIX
+    _SC_XOPEN_CRYPT,
+#define _SC_XOPEN_CRYPT			_SC_XOPEN_CRYPT
+    _SC_XOPEN_ENH_I18N,
+#define _SC_XOPEN_ENH_I18N		_SC_XOPEN_ENH_I18N
+    _SC_XOPEN_SHM,
+#define _SC_XOPEN_SHM			_SC_XOPEN_SHM
+
+    _SC_2_CHAR_TERM,
+#define _SC_2_CHAR_TERM			_SC_2_CHAR_TERM
+    _SC_2_C_VERSION,
+#define _SC_2_C_VERSION			_SC_2_C_VERSION
+    _SC_2_UPE,
+#define _SC_2_UPE			_SC_2_UPE
+
+    _SC_XOPEN_XPG2,
+#define _SC_XOPEN_XPG2			_SC_XOPEN_XPG2
+    _SC_XOPEN_XPG3,
+#define _SC_XOPEN_XPG3			_SC_XOPEN_XPG3
+    _SC_XOPEN_XPG4,
+#define _SC_XOPEN_XPG4			_SC_XOPEN_XPG4
+
+    _SC_CHAR_BIT,
+#define	_SC_CHAR_BIT			_SC_CHAR_BIT
+    _SC_CHAR_MAX,
+#define	_SC_CHAR_MAX			_SC_CHAR_MAX
+    _SC_CHAR_MIN,
+#define	_SC_CHAR_MIN			_SC_CHAR_MIN
+    _SC_INT_MAX,
+#define	_SC_INT_MAX			_SC_INT_MAX
+    _SC_INT_MIN,
+#define	_SC_INT_MIN			_SC_INT_MIN
+    _SC_LONG_BIT,
+#define	_SC_LONG_BIT			_SC_LONG_BIT
+    _SC_WORD_BIT,
+#define	_SC_WORD_BIT			_SC_WORD_BIT
+    _SC_MB_LEN_MAX,
+#define	_SC_MB_LEN_MAX			_SC_MB_LEN_MAX
+    _SC_NZERO,
+#define	_SC_NZERO			_SC_NZERO
+    _SC_SSIZE_MAX,
+#define	_SC_SSIZE_MAX			_SC_SSIZE_MAX
+    _SC_SCHAR_MAX,
+#define	_SC_SCHAR_MAX			_SC_SCHAR_MAX
+    _SC_SCHAR_MIN,
+#define	_SC_SCHAR_MIN			_SC_SCHAR_MIN
+    _SC_SHRT_MAX,
+#define	_SC_SHRT_MAX			_SC_SHRT_MAX
+    _SC_SHRT_MIN,
+#define	_SC_SHRT_MIN			_SC_SHRT_MIN
+    _SC_UCHAR_MAX,
+#define	_SC_UCHAR_MAX			_SC_UCHAR_MAX
+    _SC_UINT_MAX,
+#define	_SC_UINT_MAX			_SC_UINT_MAX
+    _SC_ULONG_MAX,
+#define	_SC_ULONG_MAX			_SC_ULONG_MAX
+    _SC_USHRT_MAX,
+#define	_SC_USHRT_MAX			_SC_USHRT_MAX
+
+    _SC_NL_ARGMAX,
+#define	_SC_NL_ARGMAX			_SC_NL_ARGMAX
+    _SC_NL_LANGMAX,
+#define	_SC_NL_LANGMAX			_SC_NL_LANGMAX
+    _SC_NL_MSGMAX,
+#define	_SC_NL_MSGMAX			_SC_NL_MSGMAX
+    _SC_NL_NMAX,
+#define	_SC_NL_NMAX			_SC_NL_NMAX
+    _SC_NL_SETMAX,
+#define	_SC_NL_SETMAX			_SC_NL_SETMAX
+    _SC_NL_TEXTMAX,
+#define	_SC_NL_TEXTMAX			_SC_NL_TEXTMAX
+
+    _SC_XBS5_ILP32_OFF32,
+#define _SC_XBS5_ILP32_OFF32		_SC_XBS5_ILP32_OFF32
+    _SC_XBS5_ILP32_OFFBIG,
+#define _SC_XBS5_ILP32_OFFBIG		_SC_XBS5_ILP32_OFFBIG
+    _SC_XBS5_LP64_OFF64,
+#define _SC_XBS5_LP64_OFF64		_SC_XBS5_LP64_OFF64
+    _SC_XBS5_LPBIG_OFFBIG,
+#define _SC_XBS5_LPBIG_OFFBIG		_SC_XBS5_LPBIG_OFFBIG
+
+    _SC_XOPEN_LEGACY,
+#define _SC_XOPEN_LEGACY		_SC_XOPEN_LEGACY
+    _SC_XOPEN_REALTIME,
+#define _SC_XOPEN_REALTIME		_SC_XOPEN_REALTIME
+    _SC_XOPEN_REALTIME_THREADS
+#define _SC_XOPEN_REALTIME_THREADS	_SC_XOPEN_REALTIME_THREADS
+  };
+
+#if (defined __USE_POSIX2 || defined __USE_UNIX98 \
+     || defined __USE_FILE_OFFSET64 || defined __USE_LARGEFILE64 \
+     || defined __USE_LARGEFILE)
+/* Values for the NAME argument to `confstr'.  */
+enum
+  {
+    _CS_PATH			/* The default search path.  */
+#define _CS_PATH		_CS_PATH
+
+#if (defined __USE_FILE_OFFSET64 || defined __USE_LARGEFILE64 \
+     || defined __USE_LARGEFILE)
+    ,
+    _CS_LFS_CFLAGS = 1000,
+# define _CS_LFS_CFLAGS		_CS_LFS_CFLAGS
+    _CS_LFS_LDFLAGS,
+# define _CS_LFS_LDFLAGS	_CS_LFS_LDFLAGS
+    _CS_LFS_LIBS,
+# define _CS_LFS_LIBS		_CS_LFS_LIBS
+    _CS_LFS_LINTFLAGS,
+# define _CS_LFS_LINTFLAGS	_CS_LFS_LINTFLAGS
+    _CS_LFS64_CFLAGS,
+# define _CS_LFS64_CFLAGS	_CS_LFS64_CFLAGS
+    _CS_LFS64_LDFLAGS,
+# define _CS_LFS64_LDFLAGS	_CS_LFS64_LDFLAGS
+    _CS_LFS64_LIBS,
+# define _CS_LFS64_LIBS		_CS_LFS64_LIBS
+    _CS_LFS64_LINTFLAGS
+# define _CS_LFS64_LINTFLAGS	_CS_LFS64_LINTFLAGS
+#endif
+
+#ifdef __USE_UNIX98
+    ,
+    _CS_XBS5_ILP32_OFF32_CFLAGS = 1100,
+# define _CS_XBS5_ILP32_OFF32_CFLAGS _CS_XBS5_ILP32_OFF32_CFLAGS
+    _CS_XBS5_ILP32_OFF32_LDFLAGS,
+# define _CS_XBS5_ILP32_OFF32_LDFLAGS _CS_XBS5_ILP32_OFF32_LDFLAGS
+    _CS_XBS5_ILP32_OFF32_LIBS,
+# define _CS_XBS5_ILP32_OFF32_LIBS _CS_XBS5_ILP32_OFF32_LIBS
+    _CS_XBS5_ILP32_OFF32_LINTFLAGS,
+# define _CS_XBS5_ILP32_OFF32_LINTFLAGS _CS_XBS5_ILP32_OFF32_LINTFLAGS
+    _CS_XBS5_ILP32_OFFBIG_CFLAGS,
+# define _CS_XBS5_ILP32_OFFBIG_CFLAGS _CS_XBS5_ILP32_OFFBIG_CFLAGS
+    _CS_XBS5_ILP32_OFFBIG_LDFLAGS,
+# define _CS_XBS5_ILP32_OFFBIG_LDFLAGS _CS_XBS5_ILP32_OFFBIG_LDFLAGS
+    _CS_XBS5_ILP32_OFFBIG_LIBS,
+# define _CS_XBS5_ILP32_OFFBIG_LIBS _CS_XBS5_ILP32_OFFBIG_LIBS
+    _CS_XBS5_ILP32_OFFBIG_LINTFLAGS,
+# define _CS_XBS5_ILP32_OFFBIG_LINTFLAGS _CS_XBS5_ILP32_OFFBIG_LINTFLAGS
+    _CS_XBS5_LP64_OFF64_CFLAGS,
+# define _CS_XBS5_LP64_OFF64_CFLAGS _CS_XBS5_LP64_OFF64_CFLAGS
+    _CS_XBS5_LP64_OFF64_LDFLAGS,
+# define _CS_XBS5_LP64_OFF64_LDFLAGS _CS_XBS5_LP64_OFF64_LDFLAGS
+    _CS_XBS5_LP64_OFF64_LIBS,
+# define _CS_XBS5_LP64_OFF64_LIBS _CS_XBS5_LP64_OFF64_LIBS
+    _CS_XBS5_LP64_OFF64_LINTFLAGS,
+# define _CS_XBS5_LP64_OFF64_LINTFLAGS _CS_XBS5_LP64_OFF64_LINTFLAGS
+    _CS_XBS5_LPBIG_OFFBIG_CFLAGS,
+# define _CS_XBS5_LPBIG_OFFBIG_CFLAGS _CS_XBS5_LPBIG_OFFBIG_CFLAGS
+    _CS_XBS5_LPBIG_OFFBIG_LDFLAGS,
+# define _CS_XBS5_LPBIG_OFFBIG_LDFLAGS _CS_XBS5_LPBIG_OFFBIG_LDFLAGS
+    _CS_XBS5_LPBIG_OFFBIG_LIBS,
+# define _CS_XBS5_LPBIG_OFFBIG_LIBS _CS_XBS5_LPBIG_OFFBIG_LIBS
+    _CS_XBS5_LPBIG_OFFBIG_LINTFLAGS
+# define _CS_XBS5_LPBIG_OFFBIG_LINTFLAGS _CS_XBS5_LPBIG_OFFBIG_LINTFLAGS
+#endif
+  };
+#endif
diff --git a/libc/sysdeps/linux/i386/bits/posix_opt.h b/libc/sysdeps/linux/i386/bits/posix_opt.h
new file mode 100644
index 000000000..15683b77e
--- /dev/null
+++ b/libc/sysdeps/linux/i386/bits/posix_opt.h
@@ -0,0 +1,110 @@
+/* Define POSIX options for Linux.
+   Copyright (C) 1996, 1997, 1998, 1999 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., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef	_POSIX_OPT_H
+#define	_POSIX_OPT_H	1
+
+/* Job control is supported.  */
+#define	_POSIX_JOB_CONTROL	1
+
+/* Processes have a saved set-user-ID and a saved set-group-ID.  */
+#define	_POSIX_SAVED_IDS	1
+
+/* Priority scheduling is supported.  */
+#define	_POSIX_PRIORITY_SCHEDULING	1
+
+/* Synchronizing file data is supported.  */
+#define	_POSIX_SYNCHRONIZED_IO	1
+
+/* The fsync function is present.  */
+#define	_POSIX_FSYNC	1
+
+/* Mapping of files to memory is supported.  */
+#define	_POSIX_MAPPED_FILES	1
+
+/* Locking of all memory is supported.  */
+#define	_POSIX_MEMLOCK	1
+
+/* Locking of ranges of memory is supported.  */
+#define	_POSIX_MEMLOCK_RANGE	1
+
+/* Setting of memory protections is supported.  */
+#define	_POSIX_MEMORY_PROTECTION	1
+
+/* Implementation supports `poll' function.  */
+#define	_POSIX_POLL	1
+
+/* Implementation supports `select' and `pselect' functions.  */
+#define	_POSIX_SELECT	1
+
+/* Only root can change owner of file.  */
+#define	_POSIX_CHOWN_RESTRICTED	1
+
+/* `c_cc' member of 'struct termios' structure can be disabled by
+   using the value _POSIX_VDISABLE.  */
+#define	_POSIX_VDISABLE	'\0'
+
+/* Filenames are not silently truncated.  */
+#define	_POSIX_NO_TRUNC	1
+
+/* X/Open realtime support is available.  */
+#define _XOPEN_REALTIME	1
+
+/* X/Open realtime thread support is available.  */
+#define _XOPEN_REALTIME_THREADS	1
+
+/* XPG4.2 shared memory is supported.  */
+#define	_XOPEN_SHM	1
+
+/* Tell we have POSIX threads.  */
+#define _POSIX_THREADS	1
+
+/* We have the reentrant functions described in POSIX.  */
+#define _POSIX_REENTRANT_FUNCTIONS      1
+#define _POSIX_THREAD_SAFE_FUNCTIONS	1
+
+/* We provide priority scheduling for threads.  */
+#define	_POSIX_THREAD_PRIORITY_SCHEDULING	1
+
+/* We support user-defined stack sizes.  */
+#define _POSIX_THREAD_ATTR_STACKSIZE	1
+
+/* We support user-defined stacks.  */
+#define _POSIX_THREAD_ATTR_STACKADDR	1
+
+/* We support POSIX.1b semaphores, but only the non-shared form for now.  */
+/*#define _POSIX_SEMAPHORES	1	XXX We are not quite there now.  */
+
+/* Real-time signals are supported.  */
+#define _POSIX_REALTIME_SIGNALS	1
+
+/* We support asynchronous I/O.  */
+#define _POSIX_ASYNCHRONOUS_IO	1
+/* Alternative name for Unix98.  */
+#define _LFS_ASYNCHRONOUS_IO	1
+
+/* The LFS support in asynchronous I/O is also available.  */
+#define _LFS64_ASYNCHRONOUS_IO	1
+
+/* The rest of the LFS is also available.  */
+#define _LFS_LARGEFILE		1
+#define _LFS64_LARGEFILE	1
+#define _LFS64_STDIO		1
+
+#endif /* posix_opt.h */
diff --git a/libc/unistd/Makefile b/libc/unistd/Makefile
index 4e5e5fc8a..db8c0c019 100644
--- a/libc/unistd/Makefile
+++ b/libc/unistd/Makefile
@@ -25,7 +25,8 @@ include $(TOPDIR)Rules.mak
 LIBC=$(TOPDIR)libc.a
 
 
-CSRC=execl.c execlp.c execv.c execvep.c execvp.c getcwd.c getopt.c sleep.c
+CSRC=execl.c execlp.c execv.c execvep.c execvp.c getcwd.c getopt.c \
+	sleep.c sysconf.c
 COBJS=$(patsubst %.c,%.o, $(CSRC))
 OBJS=$(COBJS)
 
diff --git a/libc/unistd/execlp.c b/libc/unistd/execlp.c
index 571ab71b0..50fb4a032 100644
--- a/libc/unistd/execlp.c
+++ b/libc/unistd/execlp.c
@@ -4,6 +4,7 @@
 #include <stdarg.h>
 
 extern char **environ;
+extern int execvep(const char *path, char *__const argv[], char *__const envp[]);
 
 int execlp(__const char *file, __const char *arg, ...)
 {
diff --git a/libc/unistd/execvp.c b/libc/unistd/execvp.c
index b2aeee917..943303332 100644
--- a/libc/unistd/execvp.c
+++ b/libc/unistd/execvp.c
@@ -2,6 +2,7 @@
 #include <unistd.h>
 
 extern char **environ;
+extern int execvep(const char *path, char *__const argv[], char *__const envp[]);
 
 int execvp(__const char *path, char *__const argv[])
 {
diff --git a/libc/unistd/sleep.c b/libc/unistd/sleep.c
index 5b458e07a..e11770563 100644
--- a/libc/unistd/sleep.c
+++ b/libc/unistd/sleep.c
@@ -4,7 +4,7 @@
 #include <sys/types.h>
 #include <unistd.h>
 
-void usleep(unsigned long usec)
+void usleep(unsigned int usec)
 {
 	struct timeval tv;
 
diff --git a/libc/unistd/sysconf.c b/libc/unistd/sysconf.c
new file mode 100644
index 000000000..96aa30122
--- /dev/null
+++ b/libc/unistd/sysconf.c
@@ -0,0 +1,855 @@
+/* Copyright (C) 1991, 93, 95, 96, 97, 2000 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., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#include <errno.h>
+#include <limits.h>
+#include <grp.h>
+#include <pwd.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <time.h>
+#include <unistd.h>
+#include <sys/sysinfo.h>
+#include <sys/types.h>
+#include <regex.h>
+
+
+/* Get the value of the system variable NAME.  */
+long int sysconf(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:
+#ifdef	CLK_TCK
+      return CLK_TCK;
+#else
+      return 60;
+#endif
+
+    case _SC_NGROUPS_MAX:
+#ifdef	NGROUPS_MAX
+      return NGROUPS_MAX;
+#else
+      return -1;
+#endif
+
+    case _SC_OPEN_MAX:
+#if 0
+      return getdtablesize ();
+#else
+      return -1;
+#endif
+
+    case _SC_STREAM_MAX:
+#ifdef	STREAM_MAX
+      return STREAM_MAX;
+#else
+      return FOPEN_MAX;
+#endif
+
+    case _SC_TZNAME_MAX:
+#if 0
+      return tzname_max ();
+#else
+      return -1;
+#endif
+
+    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_REALTIME_SIGNALS:
+#ifdef	_POSIX_REALTIME_SIGNALS
+      return 1;
+#else
+      return -1;
+#endif
+
+    case _SC_PRIORITY_SCHEDULING:
+#ifdef	_POSIX_PRIORITY_SCHEDULING
+      return 1;
+#else
+      return -1;
+#endif
+
+    case _SC_TIMERS:
+#ifdef	_POSIX_TIMERS
+      return 1;
+#else
+      return -1;
+#endif
+
+    case _SC_ASYNCHRONOUS_IO:
+#ifdef	_POSIX_ASYNCHRONOUS_IO
+      return 1;
+#else
+      return -1;
+#endif
+
+    case _SC_PRIORITIZED_IO:
+#ifdef	_POSIX_PRIORITIZED_IO
+      return 1;
+#else
+      return -1;
+#endif
+
+    case _SC_SYNCHRONIZED_IO:
+#ifdef	_POSIX_SYNCHRONIZED_IO
+      return 1;
+#else
+      return -1;
+#endif
+
+    case _SC_FSYNC:
+#ifdef	_POSIX_FSYNC
+      return 1;
+#else
+      return -1;
+#endif
+
+    case _SC_MAPPED_FILES:
+#ifdef	_POSIX_MAPPED_FILES
+      return 1;
+#else
+      return -1;
+#endif
+
+    case _SC_MEMLOCK:
+#ifdef	_POSIX_MEMLOCK
+      return 1;
+#else
+      return -1;
+#endif
+
+    case _SC_MEMLOCK_RANGE:
+#ifdef	_POSIX_MEMLOCK_RANGE
+      return 1;
+#else
+      return -1;
+#endif
+
+    case _SC_MEMORY_PROTECTION:
+#ifdef	_POSIX_MEMORY_PROTECTION
+      return 1;
+#else
+      return -1;
+#endif
+
+    case _SC_MESSAGE_PASSING:
+#ifdef	_POSIX_MESSAGE_PASSING
+      return 1;
+#else
+      return -1;
+#endif
+
+    case _SC_SEMAPHORES:
+#ifdef	_POSIX_SEMAPHORES
+      return 1;
+#else
+      return -1;
+#endif
+
+    case _SC_SHARED_MEMORY_OBJECTS:
+#ifdef	_POSIX_SHARED_MEMORY_OBJECTS
+      return 1;
+#else
+      return -1;
+#endif
+
+    case _SC_VERSION:
+      return _POSIX_VERSION;
+
+    case _SC_PAGESIZE:
+#if 0
+      return __getpagesize ();
+#else
+      return -1;
+#endif
+
+    case _SC_AIO_LISTIO_MAX:
+#ifdef	AIO_LISTIO_MAX
+      return AIO_LISTIO_MAX;
+#else
+      return -1;
+#endif
+
+    case _SC_AIO_MAX:
+#ifdef	AIO_MAX
+      return AIO_MAX;
+#else
+      return -1;
+#endif
+
+    case _SC_AIO_PRIO_DELTA_MAX:
+#ifdef	AIO_PRIO_DELTA_MAX
+      return AIO_PRIO_DELTA_MAX;
+#else
+      return -1;
+#endif
+
+    case _SC_DELAYTIMER_MAX:
+#ifdef	DELAYTIMER_MAX
+      return DELAYTIMER_MAX;
+#else
+      return -1;
+#endif
+
+    case _SC_MQ_OPEN_MAX:
+#ifdef	MQ_OPEN_MAX
+      return MQ_OPEN_MAX;
+#else
+      return -1;
+#endif
+
+    case _SC_MQ_PRIO_MAX:
+#ifdef	MQ_PRIO_MAX
+      return MQ_PRIO_MAX;
+#else
+      return -1;
+#endif
+
+    case _SC_RTSIG_MAX:
+#ifdef	RTSIG_MAX
+      return RTSIG_MAX;
+#else
+      return -1;
+#endif
+
+    case _SC_SEM_NSEMS_MAX:
+#ifdef	SEM_NSEMS_MAX
+      return SEM_NSEMS_MAX;
+#else
+      return -1;
+#endif
+
+    case _SC_SEM_VALUE_MAX:
+#ifdef	SEM_VALUE_MAX
+      return SEM_VALUE_MAX;
+#else
+      return -1;
+#endif
+
+    case _SC_SIGQUEUE_MAX:
+#ifdef	SIGQUEUE_MAX
+      return SIGQUEUE_MAX;
+#else
+      return -1;
+#endif
+
+    case _SC_TIMER_MAX:
+#ifdef	TIMER_MAX
+      return TIMER_MAX;
+#else
+      return -1;
+#endif
+
+    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_COLL_WEIGHTS_MAX:
+#ifdef	COLL_WEIGHTS_MAX
+      return COLL_WEIGHTS_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_CHARCLASS_NAME_MAX:
+#ifdef	CHARCLASS_NAME_MAX
+      return CHARCLASS_NAME_MAX;
+#else
+      return -1;
+#endif
+
+    case _SC_PII:
+#ifdef	_POSIX_PII
+      return 1;
+#else
+      return -1;
+#endif
+
+    case _SC_PII_XTI:
+#ifdef	_POSIX_PII_XTI
+      return 1;
+#else
+      return -1;
+#endif
+
+    case _SC_PII_SOCKET:
+#ifdef	_POSIX_PII_SOCKET
+      return 1;
+#else
+      return -1;
+#endif
+
+    case _SC_PII_INTERNET:
+#ifdef	_POSIX_PII_INTERNET
+      return 1;
+#else
+      return -1;
+#endif
+
+    case _SC_PII_OSI:
+#ifdef	_POSIX_PII_OSI
+      return 1;
+#else
+      return -1;
+#endif
+
+    case _SC_POLL:
+#ifdef	_POSIX_POLL
+      return 1;
+#else
+      return -1;
+#endif
+
+    case _SC_SELECT:
+#ifdef	_POSIX_SELECT
+      return 1;
+#else
+      return -1;
+#endif
+
+    case _SC_UIO_MAXIOV:
+#ifdef	UIO_MAXIOV
+      return UIO_MAXIOV;
+#else
+      return -1;
+#endif
+
+    case _SC_PII_INTERNET_STREAM:
+#ifdef	_POSIX_PII_INTERNET_STREAM
+      return 1;
+#else
+      return -1;
+#endif
+
+    case _SC_PII_INTERNET_DGRAM:
+#ifdef	_POSIX_PII_INTERNET_DGRAM
+      return 1;
+#else
+      return -1;
+#endif
+
+    case _SC_PII_OSI_COTS:
+#ifdef	_POSIX_PII_OSI_COTS
+      return 1;
+#else
+      return -1;
+#endif
+
+    case _SC_PII_OSI_CLTS:
+#ifdef	_POSIX_PII_OSI_CLTS
+      return 1;
+#else
+      return -1;
+#endif
+
+    case _SC_PII_OSI_M:
+#ifdef	_POSIX_PII_OSI_M
+      return 1;
+#else
+      return -1;
+#endif
+
+    case _SC_T_IOV_MAX:
+#ifdef	_T_IOV_MAX
+      return _T_IOV_MAX;
+#else
+      return -1;
+#endif
+
+    case _SC_2_VERSION:
+      return _POSIX2_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_C_VERSION:
+#ifdef	_POSIX2_C_VERSION
+      return _POSIX2_C_VERSION;
+#else
+      return -1;
+#endif
+
+    case _SC_2_FORT_DEV:
+#ifdef	_POSIX2_FORT_DEV
+      return _POSIX2_FORT_DEV;
+#else
+      return -1;
+#endif
+
+    case _SC_2_LOCALEDEF:
+#ifdef	_POSIX2_LOCALEDEF
+      return _POSIX2_LOCALEDEF;
+#else
+      return -1;
+#endif
+
+    case _SC_2_SW_DEV:
+#ifdef	_POSIX2_SW_DEV
+      return _POSIX2_SW_DEV;
+#else
+      return -1;
+#endif
+
+    case _SC_2_CHAR_TERM:
+#ifdef	_POSIX2_CHAR_TERM
+      return _POSIX2_CHAR_TERM;
+#else
+      return -1;
+#endif
+
+    case _SC_2_UPE:
+#ifdef	_POSIX2_UPE
+      return _POSIX2_UPE;
+#else
+      return -1;
+#endif
+
+      /* POSIX 1003.1c (POSIX Threads).  */
+    case _SC_THREADS:
+#ifdef	_POSIX_THREADS
+      return 1;
+#else
+      return -1;
+#endif
+
+    case _SC_THREAD_SAFE_FUNCTIONS:
+#ifdef	_POSIX_THREAD_SAFE_FUNCTIONS
+      return 1;
+#else
+      return -1;
+#endif
+
+    case _SC_GETGR_R_SIZE_MAX:
+#ifdef	NSS_BUFLEN_GROUP
+      return NSS_BUFLEN_GROUP;
+#else
+      return -1;
+#endif
+
+    case _SC_GETPW_R_SIZE_MAX:
+#ifdef	NSS_BUFLEN_PASSWD
+      return NSS_BUFLEN_PASSWD;
+#else
+      return -1;
+#endif
+
+    case _SC_LOGIN_NAME_MAX:
+#ifdef	_POSIX_LOGIN_NAME_MAX
+      return _POSIX_LOGIN_NAME_MAX;
+#else
+      return -1;
+#endif
+
+    case _SC_TTY_NAME_MAX:
+#ifdef	_POSIX_TTY_NAME_MAX
+      return _POSIX_TTY_NAME_MAX;
+#else
+      return -1;
+#endif
+
+    case _SC_THREAD_DESTRUCTOR_ITERATIONS:
+#ifdef	_POSIX_THREAD_DESTRUCTOR_ITERATIONS
+      return _POSIX_THREAD_DESTRUCTOR_ITERATIONS;
+#else
+      return -1;
+#endif
+
+    case _SC_THREAD_KEYS_MAX:
+#ifdef	PTHREAD_KEYS_MAX
+      return PTHREAD_KEYS_MAX;
+#else
+      return -1;
+#endif
+
+    case _SC_THREAD_STACK_MIN:
+#ifdef	PTHREAD_STACK_MIN
+      return PTHREAD_STACK_MIN;
+#else
+      return -1;
+#endif
+
+    case _SC_THREAD_THREADS_MAX:
+#ifdef	PTHREAD_THREADS_MAX
+      return PTHREAD_THREADS_MAX;
+#else
+      return -1;
+#endif
+
+    case _SC_THREAD_ATTR_STACKADDR:
+#ifdef	_POSIX_THREAD_ATTR_STACKADDR
+      return 1;
+#else
+      return -1;
+#endif
+
+    case _SC_THREAD_ATTR_STACKSIZE:
+#ifdef	_POSIX_THREAD_ATTR_STACKSIZE
+      return 1;
+#else
+      return -1;
+#endif
+
+    case _SC_THREAD_PRIORITY_SCHEDULING:
+#ifdef	_POSIX_THREAD_PRIORITY_SCHEDULING
+      return 1;
+#else
+      return -1;
+#endif
+
+    case _SC_THREAD_PRIO_INHERIT:
+#ifdef	_POSIX_THREAD_PRIO_INHERIT
+      return 1;
+#else
+      return -1;
+#endif
+
+    case _SC_THREAD_PRIO_PROTECT:
+#ifdef	_POSIX_THREAD_PRIO_PROTECT
+      return 1;
+#else
+      return -1;
+#endif
+
+    case _SC_THREAD_PROCESS_SHARED:
+#ifdef	_POSIX_THREAD_PROCESS_SHARED
+      return 1;
+#else
+      return -1;
+#endif
+
+    case _SC_NPROCESSORS_CONF:
+#if 0
+      return get_nprocs_conf ();
+#else
+      return -1;
+#endif
+
+    case _SC_NPROCESSORS_ONLN:
+#if 0
+      return get_nprocs ();
+#else
+      return -1;
+#endif
+
+    case _SC_PHYS_PAGES:
+#if 0
+      return get_phys_pages ();
+#else
+      return -1;
+#endif
+
+    case _SC_AVPHYS_PAGES:
+#if 0
+      return get_avphys_pages ();
+#else
+      return -1;
+#endif
+
+    case _SC_ATEXIT_MAX:
+      /* We have no limit since we use lists.  */
+      return INT_MAX;
+
+    case _SC_PASS_MAX:
+      /* We have no limit but since the return value might be used to
+	 allocate a buffer we restrict the value.  */
+      return BUFSIZ;
+
+    case _SC_XOPEN_VERSION:
+      return _XOPEN_VERSION;
+
+    case _SC_XOPEN_XCU_VERSION:
+      return _XOPEN_XCU_VERSION;
+
+    case _SC_XOPEN_UNIX:
+      return _XOPEN_UNIX;
+
+    case _SC_XOPEN_CRYPT:
+#ifdef	_XOPEN_CRYPT
+      return _XOPEN_CRYPT;
+#else
+      return -1;
+#endif
+
+    case _SC_XOPEN_ENH_I18N:
+#ifdef	_XOPEN_ENH_I18N
+      return _XOPEN_ENH_I18N;
+#else
+      return -1;
+#endif
+
+    case _SC_XOPEN_SHM:
+#ifdef	_XOPEN_SHM
+      return _XOPEN_SHM;
+#else
+      return -1;
+#endif
+
+    case _SC_XOPEN_XPG2:
+#ifdef	_XOPEN_XPG2
+      return _XOPEN_XPG2;
+#else
+      return -1;
+#endif
+
+    case _SC_XOPEN_XPG3:
+#ifdef	_XOPEN_XPG3
+      return _XOPEN_XPG3;
+#else
+      return -1;
+#endif
+
+    case _SC_XOPEN_XPG4:
+#ifdef	_XOPEN_XPG4
+      return _XOPEN_XPG4;
+#else
+      return -1;
+#endif
+
+    case _SC_CHAR_BIT:
+      return CHAR_BIT;
+
+    case _SC_CHAR_MAX:
+      return CHAR_MAX;
+
+    case _SC_CHAR_MIN:
+      return CHAR_MIN;
+
+    case _SC_INT_MAX:
+      return INT_MAX;
+
+    case _SC_INT_MIN:
+      return INT_MIN;
+
+    case _SC_LONG_BIT:
+      return sizeof (long int) * CHAR_BIT;
+
+    case _SC_WORD_BIT:
+      return sizeof (int) * CHAR_BIT;
+
+    case _SC_MB_LEN_MAX:
+      return MB_LEN_MAX;
+
+    case _SC_NZERO:
+      return NZERO;
+
+    case _SC_SSIZE_MAX:
+      return _POSIX_SSIZE_MAX;
+
+    case _SC_SCHAR_MAX:
+      return SCHAR_MAX;
+
+    case _SC_SCHAR_MIN:
+      return SCHAR_MIN;
+
+    case _SC_SHRT_MAX:
+      return SHRT_MAX;
+
+    case _SC_SHRT_MIN:
+      return SHRT_MIN;
+
+    case _SC_UCHAR_MAX:
+      return UCHAR_MAX;
+
+    case _SC_UINT_MAX:
+      return UINT_MAX;
+
+    case _SC_ULONG_MAX:
+      return ULONG_MAX;
+
+    case _SC_USHRT_MAX:
+      return USHRT_MAX;
+
+    case _SC_NL_ARGMAX:
+#ifdef	NL_ARGMAX
+      return NL_ARGMAX;
+#else
+      return -1;
+#endif
+
+    case _SC_NL_LANGMAX:
+#ifdef	NL_LANGMAX
+      return NL_LANGMAX;
+#else
+      return -1;
+#endif
+
+    case _SC_NL_MSGMAX:
+#ifdef	NL_MSGMAX
+      return NL_MSGMAX;
+#else
+      return -1;
+#endif
+
+    case _SC_NL_NMAX:
+#ifdef	NL_NMAX
+      return NL_NMAX;
+#else
+      return -1;
+#endif
+
+    case _SC_NL_SETMAX:
+#ifdef	NL_SETMAX
+      return NL_SETMAX;
+#else
+      return -1;
+#endif
+
+    case _SC_NL_TEXTMAX:
+#ifdef	NL_TEXTMAX
+      return NL_TEXTMAX;
+#else
+      return -1;
+#endif
+
+    case _SC_XBS5_ILP32_OFF32:
+#ifdef _XBS5_ILP32_OFF32
+      return _XBS5_ILP32_OFF32;
+#else
+      return -1;
+#endif
+    case _SC_XBS5_ILP32_OFFBIG:
+#ifdef _XBS5_ILP32_OFFBIG
+      return _XBS5_ILP32_OFFBIG;
+#else
+      return -1;
+#endif
+    case _SC_XBS5_LP64_OFF64:
+#ifdef _XBS5_LP64_OFF64
+      return _XBS5_LP64_OFF64;
+#else
+      return -1;
+#endif
+    case _SC_XBS5_LPBIG_OFFBIG:
+#ifdef _XBS5_LPBIG_OFFBIG
+      return _XBS5_LPBIG_OFFBIG;
+#else
+      return -1;
+#endif
+
+    case _SC_XOPEN_LEGACY:
+      return _XOPEN_LEGACY;
+
+    case _SC_XOPEN_REALTIME:
+#ifdef _XOPEN_REALTIME
+      return _XOPEN_REALTIME;
+#else
+      return -1;
+#endif
+    case _SC_XOPEN_REALTIME_THREADS:
+#ifdef _XOPEN_REALTIME_THREADS
+      return _XOPEN_REALTIME_THREADS;
+#else
+      return -1;
+#endif
+    }
+}
+