auto import from //depot/cupcake/@135843

63 files changed, 5185 insertions, 0 deletions

diff --git a/libc/unistd/abort.c b/libc/unistd/abort.c
new file mode 100644
index 0000000..d4e40e1
--- /dev/null
+++ b/libc/unistd/abort.c
@@ -0,0 +1,101 @@
+/*	$OpenBSD: abort.c,v 1.14 2005/08/08 08:05:36 espie Exp $ */
+/*
+ * Copyright (c) 1985 Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <signal.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include "thread_private.h"
+#include "atexit.h"
+
+/* temporary, for bug hunting */
+#include "logd.h"
+#define debug_log(format, ...)  \
+    __libc_android_log_print(ANDROID_LOG_DEBUG, "libc-abort", (format), ##__VA_ARGS__ )
+
+void
+abort(void)
+{
+	struct atexit *p = __atexit;
+	static int cleanup_called = 0;
+	sigset_t mask;
+
+  
+	sigfillset(&mask);
+	/*
+	 * don't block SIGABRT to give any handler a chance; we ignore
+	 * any errors -- X311J doesn't allow abort to return anyway.
+	 */
+	sigdelset(&mask, SIGABRT);
+    /* temporary, so deliberate seg fault can be caught by debuggerd */
+	sigdelset(&mask, SIGSEGV);
+    /* -- */
+	(void)sigprocmask(SIG_SETMASK, &mask, (sigset_t *)NULL);
+
+	/*
+	 * POSIX requires we flush stdio buffers on abort
+	 */
+	if (cleanup_called == 0) {
+		while (p != NULL && p->next != NULL)
+			p = p->next;
+		/* the check for fn_dso == NULL is mostly paranoia */
+		if (p != NULL && p->fns[0].fn_dso == NULL &&
+		    p->fns[0].fn_ptr.std_func != NULL) {
+			cleanup_called = 1;
+			(*p->fns[0].fn_ptr.std_func)();
+		}
+	}
+
+    /* temporary, for bug hunting */
+    debug_log("abort() called in pid %d\n", getpid());
+    /* seg fault seems to produce better debuggerd results than SIGABRT */
+    *((char*)0xdeadbaad) = 39;
+    debug_log("somehow we're not dead?\n");
+    /* -- */
+
+	(void)kill(getpid(), SIGABRT);
+
+	/*
+	 * if SIGABRT ignored, or caught and the handler returns, do
+	 * it again, only harder.
+	 */
+        {
+            struct sigaction sa;
+
+            sa.sa_handler = SIG_DFL;
+            sa.sa_flags   = SA_RESTART;
+            sigemptyset(&sa.sa_mask);
+
+            (void)sigaction( SIGABRT, &sa, &sa );
+        }
+
+	(void)sigprocmask(SIG_SETMASK, &mask, (sigset_t *)NULL);
+	(void)kill(getpid(), SIGABRT);
+	_exit(1);
+}
diff --git a/libc/unistd/alarm.c b/libc/unistd/alarm.c
new file mode 100644
index 0000000..01863a4
--- /dev/null
+++ b/libc/unistd/alarm.c
@@ -0,0 +1,58 @@
+/*
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)alarm.c	8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+#include <sys/cdefs.h>
+//__FBSDID("$FreeBSD: /repoman/r/ncvs/src/lib/libc/gen/alarm.c,v 1.3 2007/01/09 00:27:53 imp Exp $");
+
+/*
+ * Backwards compatible alarm.
+ */
+#include <sys/time.h>
+#include <unistd.h>
+
+unsigned int
+alarm(secs)
+	unsigned int secs;
+{
+	struct itimerval it, oitv;
+	struct itimerval *itp = &it;
+
+    itp->it_interval.tv_usec = 0;
+    itp->it_interval.tv_sec = 0;
+	itp->it_value.tv_sec = secs;
+	itp->it_value.tv_usec = 0;
+	if (setitimer(ITIMER_REAL, itp, &oitv) < 0)
+		return (-1);
+	if (oitv.it_value.tv_usec)
+		oitv.it_value.tv_sec++;
+	return (oitv.it_value.tv_sec);
+}
diff --git a/libc/unistd/brk.c b/libc/unistd/brk.c
new file mode 100644
index 0000000..bf2f108
--- /dev/null
+++ b/libc/unistd/brk.c
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <stddef.h>
+#include <unistd.h>
+#include <sys/types.h>
+
+/* shared with sbrk.c */
+char *__bionic_brk;
+
+int brk(void*  end_data)
+{
+    char*  new_brk = __brk( end_data );
+
+    if (new_brk != end_data)
+        return -1;
+
+    __bionic_brk = new_brk;
+  
+  return 0;
+}
diff --git a/libc/unistd/creat.c b/libc/unistd/creat.c
new file mode 100644
index 0000000..1b14465
--- /dev/null
+++ b/libc/unistd/creat.c
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <unistd.h>
+#include <fcntl.h>
+
+int creat(const char*  pathname, mode_t  mode)
+{
+    return open(pathname, O_WRONLY|O_TRUNC|O_CREAT, mode);
+}
diff --git a/libc/unistd/daemon.c b/libc/unistd/daemon.c
new file mode 100644
index 0000000..8181d16
--- /dev/null
+++ b/libc/unistd/daemon.c
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+int  daemon( int  nochdir, int  noclose )
+{
+   pid_t  pid;
+
+   if ( !nochdir && chdir("/") != 0 )
+       return -1;
+   
+   if ( !noclose )
+   {
+     int  fd = open("/dev/null", O_RDWR);
+
+     if ( fd < 0 )
+      return -1;
+
+     if ( dup2( fd, 0 ) < 0 ||
+	  dup2( fd, 1 ) < 0 ||
+          dup2( fd, 2 ) < 0 ) 
+     {
+       close(fd);
+      return -1;
+     }
+     close(fd);
+  }
+  
+   pid = fork();
+   if (pid < 0)
+    return -1;
+
+   if (pid > 0)
+    _exit(0);
+
+   if ( setsid() < 0 )
+     return -1;
+
+   return 0;
+}
+
diff --git a/libc/unistd/exec.c b/libc/unistd/exec.c
new file mode 100644
index 0000000..cbb98b3
--- /dev/null
+++ b/libc/unistd/exec.c
@@ -0,0 +1,244 @@
+/*	$OpenBSD: exec.c,v 1.18 2005/08/08 08:05:34 espie Exp $ */
+/*-
+ * Copyright (c) 1991, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/param.h>
+#include <sys/types.h>
+#include <sys/uio.h>
+#include <errno.h>
+#include <unistd.h>
+#include <limits.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include <paths.h>
+#include <stdarg.h>
+#include <alloca.h>
+
+extern char **environ;
+
+int
+execl(const char *name, const char *arg, ...)
+{
+	va_list ap;
+	char **argv;
+	int n;
+
+	va_start(ap, arg);
+	n = 1;
+	while (va_arg(ap, char *) != NULL)
+		n++;
+	va_end(ap);
+	argv = alloca((n + 1) * sizeof(*argv));
+	if (argv == NULL) {
+		errno = ENOMEM;
+		return (-1);
+	}
+	va_start(ap, arg);
+	n = 1;
+	argv[0] = (char *)arg;
+	while ((argv[n] = va_arg(ap, char *)) != NULL)
+		n++;
+	va_end(ap);
+	return (execve(name, argv, environ));
+}
+
+int
+execle(const char *name, const char *arg, ...)
+{
+	va_list ap;
+	char **argv, **envp;
+	int n;
+
+	va_start(ap, arg);
+	n = 1;
+	while (va_arg(ap, char *) != NULL)
+		n++;
+	va_end(ap);
+	argv = alloca((n + 1) * sizeof(*argv));
+	if (argv == NULL) {
+		errno = ENOMEM;
+		return (-1);
+	}
+	va_start(ap, arg);
+	n = 1;
+	argv[0] = (char *)arg;
+	while ((argv[n] = va_arg(ap, char *)) != NULL)
+		n++;
+	envp = va_arg(ap, char **);
+	va_end(ap);
+	return (execve(name, argv, envp));
+}
+
+int
+execlp(const char *name, const char *arg, ...)
+{
+	va_list ap;
+	char **argv;
+	int n;
+
+	va_start(ap, arg);
+	n = 1;
+	while (va_arg(ap, char *) != NULL)
+		n++;
+	va_end(ap);
+	argv = alloca((n + 1) * sizeof(*argv));
+	if (argv == NULL) {
+		errno = ENOMEM;
+		return (-1);
+	}
+	va_start(ap, arg);
+	n = 1;
+	argv[0] = (char *)arg;
+	while ((argv[n] = va_arg(ap, char *)) != NULL)
+		n++;
+	va_end(ap);
+	return (execvp(name, argv));
+}
+
+int
+execv(const char *name, char * const *argv)
+{
+	(void)execve(name, argv, environ);
+	return (-1);
+}
+
+int
+execvp(const char *name, char * const *argv)
+{
+	char **memp;
+	int cnt, lp, ln, len;
+	char *p;
+	int eacces = 0;
+	char *bp, *cur, *path, buf[MAXPATHLEN];
+
+	/*
+	 * Do not allow null name
+	 */
+	if (name == NULL || *name == '\0') {
+		errno = ENOENT;
+		return (-1);
+ 	}
+
+	/* If it's an absolute or relative path name, it's easy. */
+	if (strchr(name, '/')) {
+		bp = (char *)name;
+		cur = path = NULL;
+		goto retry;
+	}
+	bp = buf;
+
+	/* Get the path we're searching. */
+	if (!(path = getenv("PATH")))
+		path = _PATH_DEFPATH;
+	len = strlen(path) + 1;
+	cur = alloca(len);
+	if (cur == NULL) {
+		errno = ENOMEM;
+		return (-1);
+	}
+	strlcpy(cur, path, len);
+	path = cur;
+	while ((p = strsep(&cur, ":"))) {
+		/*
+		 * It's a SHELL path -- double, leading and trailing colons
+		 * mean the current directory.
+		 */
+		if (!*p) {
+			p = ".";
+			lp = 1;
+		} else
+			lp = strlen(p);
+		ln = strlen(name);
+
+		/*
+		 * If the path is too long complain.  This is a possible
+		 * security issue; given a way to make the path too long
+		 * the user may execute the wrong program.
+		 */
+		if (lp + ln + 2 > (int)sizeof(buf)) {
+			struct iovec iov[3];
+
+			iov[0].iov_base = "execvp: ";
+			iov[0].iov_len = 8;
+			iov[1].iov_base = p;
+			iov[1].iov_len = lp;
+			iov[2].iov_base = ": path too long\n";
+			iov[2].iov_len = 16;
+			(void)writev(STDERR_FILENO, iov, 3);
+			continue;
+		}
+		bcopy(p, buf, lp);
+		buf[lp] = '/';
+		bcopy(name, buf + lp + 1, ln);
+		buf[lp + ln + 1] = '\0';
+
+retry:		(void)execve(bp, argv, environ);
+		switch(errno) {
+		case E2BIG:
+			goto done;
+		case EISDIR:
+		case ELOOP:
+		case ENAMETOOLONG:
+		case ENOENT:
+			break;
+		case ENOEXEC:
+			for (cnt = 0; argv[cnt]; ++cnt)
+				;
+			memp = alloca((cnt + 2) * sizeof(char *));
+			if (memp == NULL)
+				goto done;
+			memp[0] = "sh";
+			memp[1] = bp;
+			bcopy(argv + 1, memp + 2, cnt * sizeof(char *));
+			(void)execve(_PATH_BSHELL, memp, environ);
+			goto done;
+		case ENOMEM:
+			goto done;
+		case ENOTDIR:
+			break;
+		case ETXTBSY:
+			/*
+			 * We used to retry here, but sh(1) doesn't.
+			 */
+			goto done;
+		case EACCES:
+			eacces = 1;
+			break;
+		default:
+			goto done;
+		}
+	}
+	if (eacces)
+		errno = EACCES;
+	else if (!errno)
+		errno = ENOENT;
+done:
+	return (-1);
+}
diff --git a/libc/unistd/fcntl.c b/libc/unistd/fcntl.c
new file mode 100644
index 0000000..b49db0a
--- /dev/null
+++ b/libc/unistd/fcntl.c
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <stdarg.h>
+#include <errno.h>
+
+extern int __fcntl64(int, int, void *);
+
+int fcntl(int fd, int cmd, ...)
+{
+    va_list ap;
+    void * arg;
+
+    va_start(ap, cmd);
+    arg = va_arg(ap, void *);
+    va_end(ap);
+
+    return __fcntl64(fd, cmd, arg);
+}
diff --git a/libc/unistd/fnmatch.c b/libc/unistd/fnmatch.c
new file mode 100644
index 0000000..ad31c9e
--- /dev/null
+++ b/libc/unistd/fnmatch.c
@@ -0,0 +1,205 @@
+/*      $OpenBSD: fnmatch.c,v 1.13 2006/03/31 05:34:14 deraadt Exp $        */
+
+/*
+ * Copyright (c) 1989, 1993, 1994
+ *      The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Guido van Rossum.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/*
+ * Function fnmatch() as specified in POSIX 1003.2-1992, section B.6.
+ * Compares a filename or pathname to a pattern.
+ */
+
+#include <ctype.h>
+#include <stdio.h>
+#include <string.h>
+#include <fnmatch.h>
+
+#define EOS        '\0'
+
+#define RANGE_MATCH        1
+#define RANGE_NOMATCH        0
+#define RANGE_ERROR        (-1)
+
+static int rangematch(const char *, char, int, char **);
+
+int
+fnmatch(const char *pattern, const char *string, int flags)
+{
+        const char *stringstart;
+        char *newp;
+        char c, test;
+
+        for (stringstart = string;;)
+                switch (c = *pattern++) {
+                case EOS:
+                        if ((flags & FNM_LEADING_DIR) && *string == '/')
+                                return (0);
+                        return (*string == EOS ? 0 : FNM_NOMATCH);
+                case '?':
+                        if (*string == EOS)
+                                return (FNM_NOMATCH);
+                        if (*string == '/' && (flags & FNM_PATHNAME))
+                                return (FNM_NOMATCH);
+                        if (*string == '.' && (flags & FNM_PERIOD) &&
+                            (string == stringstart ||
+                            ((flags & FNM_PATHNAME) && *(string - 1) == '/')))
+                                return (FNM_NOMATCH);
+                        ++string;
+                        break;
+                case '*':
+                        c = *pattern;
+                        /* Collapse multiple stars. */
+                        while (c == '*')
+                                c = *++pattern;
+
+                        if (*string == '.' && (flags & FNM_PERIOD) &&
+                            (string == stringstart ||
+                            ((flags & FNM_PATHNAME) && *(string - 1) == '/')))
+                                return (FNM_NOMATCH);
+
+                        /* Optimize for pattern with * at end or before /. */
+                        if (c == EOS) {
+                                if (flags & FNM_PATHNAME)
+                                        return ((flags & FNM_LEADING_DIR) ||
+                                            strchr(string, '/') == NULL ?
+                                            0 : FNM_NOMATCH);
+                                else
+                                        return (0);
+                        } else if (c == '/' && (flags & FNM_PATHNAME)) {
+                                if ((string = strchr(string, '/')) == NULL)
+                                        return (FNM_NOMATCH);
+                                break;
+                        }
+
+                        /* General case, use recursion. */
+                        while ((test = *string) != EOS) {
+                                if (!fnmatch(pattern, string, flags & ~FNM_PERIOD))
+                                        return (0);
+                                if (test == '/' && (flags & FNM_PATHNAME))
+                                        break;
+                                ++string;
+                        }
+                        return (FNM_NOMATCH);
+                case '[':
+                        if (*string == EOS)
+                                return (FNM_NOMATCH);
+                        if (*string == '/' && (flags & FNM_PATHNAME))
+                                return (FNM_NOMATCH);
+                        if (*string == '.' && (flags & FNM_PERIOD) &&
+                            (string == stringstart ||
+                            ((flags & FNM_PATHNAME) && *(string - 1) == '/')))
+                                return (FNM_NOMATCH);
+
+                        switch (rangematch(pattern, *string, flags, &newp)) {
+                        case RANGE_ERROR:
+                                /* not a good range, treat as normal text */
+                                goto normal;
+                        case RANGE_MATCH:
+                                pattern = newp;
+                                break;
+                        case RANGE_NOMATCH:
+                                return (FNM_NOMATCH);
+                        }
+                        ++string;
+                        break;
+                case '\\':
+                        if (!(flags & FNM_NOESCAPE)) {
+                                if ((c = *pattern++) == EOS) {
+                                        c = '\\';
+                                        --pattern;
+                                }
+                        }
+                        /* FALLTHROUGH */
+                default:
+                normal:
+                        if (c != *string && !((flags & FNM_CASEFOLD) &&
+                                 (tolower((unsigned char)c) ==
+                                 tolower((unsigned char)*string))))
+                                return (FNM_NOMATCH);
+                        ++string;
+                        break;
+                }
+        /* NOTREACHED */
+}
+
+static int
+rangematch(const char *pattern, char test, int flags, char **newp)
+{
+        int negate, ok;
+        char c, c2;
+
+        /*
+         * A bracket expression starting with an unquoted circumflex
+         * character produces unspecified results (IEEE 1003.2-1992,
+         * 3.13.2).  This implementation treats it like '!', for
+         * consistency with the regular expression syntax.
+         * J.T. Conklin (conklin@ngai.kaleida.com)
+         */
+        if ((negate = (*pattern == '!' || *pattern == '^')))
+                ++pattern;
+
+        if (flags & FNM_CASEFOLD)
+                test = (char)tolower((unsigned char)test);
+
+        /*
+         * A right bracket shall lose its special meaning and represent
+         * itself in a bracket expression if it occurs first in the list.
+         * -- POSIX.2 2.8.3.2
+         */
+        ok = 0;
+        c = *pattern++;
+        do {
+                if (c == '\\' && !(flags & FNM_NOESCAPE))
+                        c = *pattern++;
+                if (c == EOS)
+                        return (RANGE_ERROR);
+                if (c == '/' && (flags & FNM_PATHNAME))
+                        return (RANGE_NOMATCH);
+                if ((flags & FNM_CASEFOLD))
+                        c = (char)tolower((unsigned char)c);
+                if (*pattern == '-'
+                    && (c2 = *(pattern+1)) != EOS && c2 != ']') {
+                        pattern += 2;
+                        if (c2 == '\\' && !(flags & FNM_NOESCAPE))
+                                c2 = *pattern++;
+                        if (c2 == EOS)
+                                return (RANGE_ERROR);
+                        if (flags & FNM_CASEFOLD)
+                                c2 = (char)tolower((unsigned char)c2);
+                        if (c <= test && test <= c2)
+                                ok = 1;
+                } else if (c == test)
+                        ok = 1;
+        } while ((c = *pattern++) != ']');
+
+        *newp = (char *)pattern;
+        return (ok == negate ? RANGE_NOMATCH : RANGE_MATCH);
+}
diff --git a/libc/unistd/ftime.c b/libc/unistd/ftime.c
new file mode 100644
index 0000000..6513593
--- /dev/null
+++ b/libc/unistd/ftime.c
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <sys/timeb.h>
+
+int ftime(struct timeb *tb)
+{
+    struct timeval  tv;
+    struct timezone tz;
+
+    if (gettimeofday (&tv, &tz) < 0)
+        return -1;
+
+    tb->time    = tv.tv_sec;
+    tb->millitm = (tv.tv_usec + 500) / 1000;
+
+    if (tb->millitm == 1000) {
+        ++tb->time;
+        tb->millitm = 0;
+    }
+    tb->timezone = tz.tz_minuteswest;
+    tb->dstflag  = tz.tz_dsttime;
+
+    return 0;
+}
diff --git a/libc/unistd/ftok.c b/libc/unistd/ftok.c
new file mode 100644
index 0000000..638bd0a
--- /dev/null
+++ b/libc/unistd/ftok.c
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <unistd.h>
+#include <sys/ipc.h>
+#include <sys/stat.h>
+
+key_t  ftok(const char*  path, int  id)
+{
+    struct stat   st;
+
+    if ( lstat(path, &st) < 0 )
+        return -1;
+
+    return (key_t)( (st.st_ino & 0xffff) | ((st.st_dev & 0xff) << 16) | ((id & 255) << 24) );
+}
diff --git a/libc/unistd/getcwd.c b/libc/unistd/getcwd.c
new file mode 100644
index 0000000..1cf80e9
--- /dev/null
+++ b/libc/unistd/getcwd.c
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <unistd.h>
+
+extern int __getcwd(char * buf, size_t size);
+
+char *getcwd(char *buf, size_t size)
+{
+  return ( __getcwd(buf, size) < 0 ) ? NULL : buf;
+}
diff --git a/libc/unistd/getdtablesize.c b/libc/unistd/getdtablesize.c
new file mode 100644
index 0000000..91315a5
--- /dev/null
+++ b/libc/unistd/getdtablesize.c
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <sys/resource.h>
+#include <sys/sysconf.h>
+
+int getdtablesize()
+{
+    struct rlimit r;
+
+    if (getrlimit(RLIMIT_NOFILE, &r) < 0) {
+        return sysconf(_SC_OPEN_MAX);
+    }
+    return r.rlim_cur;
+}
diff --git a/libc/unistd/gethostname.c b/libc/unistd/gethostname.c
new file mode 100644
index 0000000..369d21e
--- /dev/null
+++ b/libc/unistd/gethostname.c
@@ -0,0 +1,51 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <errno.h>
+#include <unistd.h>
+#include <string.h>
+#include <sys/utsname.h>
+
+int gethostname(char*  buff, size_t  buflen)
+{
+    struct utsname  name;
+    int             result = 0;
+
+    result = uname(&name);
+    if (result != -1)
+    {
+        int  namelen = strlen(name.nodename);
+
+        if ((int)buflen < namelen+1) {
+    errno = EINVAL;
+            result = -1;
+        } else {
+            memcpy( buff, name.nodename, namelen+1 );
+  }
+    }
+    return result;
+}
diff --git a/libc/unistd/getopt_long.c b/libc/unistd/getopt_long.c
new file mode 100644
index 0000000..dbdf01a
--- /dev/null
+++ b/libc/unistd/getopt_long.c
@@ -0,0 +1,537 @@
+/*	$OpenBSD: getopt_long.c,v 1.20 2005/10/25 15:49:37 jmc Exp $	*/
+/*	$NetBSD: getopt_long.c,v 1.15 2002/01/31 22:43:40 tv Exp $	*/
+
+/*
+ * Copyright (c) 2002 Todd C. Miller <Todd.Miller@courtesan.com>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Sponsored in part by the Defense Advanced Research Projects
+ * Agency (DARPA) and Air Force Research Laboratory, Air Force
+ * Materiel Command, USAF, under agreement number F39502-99-1-0512.
+ */
+/*-
+ * Copyright (c) 2000 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Dieter Baron and Thomas Klausner.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *        This product includes software developed by the NetBSD
+ *        Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <err.h>
+#include <errno.h>
+#include <getopt.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+
+#define	REPLACE_GETOPT		/* use this getopt as the system getopt(3) */
+
+#ifdef REPLACE_GETOPT
+int	opterr = 1;		/* if error message should be printed */
+int	optind = 1;		/* index into parent argv vector */
+int	optopt = '?';		/* character checked for validity */
+char    *optarg;		/* argument associated with option */
+#endif
+int	optreset;		/* reset getopt */
+
+#define PRINT_ERROR	((opterr) && (*options != ':'))
+
+#define FLAG_PERMUTE	0x01	/* permute non-options to the end of argv */
+#define FLAG_ALLARGS	0x02	/* treat non-options as args to option "-1" */
+#define FLAG_LONGONLY	0x04	/* operate as getopt_long_only */
+
+/* return values */
+#define	BADCH		(int)'?'
+#define	BADARG		((*options == ':') ? (int)':' : (int)'?')
+#define	INORDER 	(int)1
+
+#define	EMSG		""
+
+static int getopt_internal(int, char * const *, const char *,
+			   const struct option *, int *, int);
+static int parse_long_options(char * const *, const char *,
+			      const struct option *, int *, int);
+static int gcd(int, int);
+static void permute_args(int, int, int, char * const *);
+
+static char *place = EMSG; /* option letter processing */
+
+/* XXX: set optreset to 1 rather than these two */
+static int nonopt_start = -1; /* first non option argument (for permute) */
+static int nonopt_end = -1;   /* first option after non options (for permute) */
+
+/* Error messages */
+static const char recargchar[] = "option requires an argument -- %c";
+static const char recargstring[] = "option requires an argument -- %s";
+static const char ambig[] = "ambiguous option -- %.*s";
+static const char noarg[] = "option doesn't take an argument -- %.*s";
+static const char illoptchar[] = "unknown option -- %c";
+static const char illoptstring[] = "unknown option -- %s";
+
+/*
+ * Compute the greatest common divisor of a and b.
+ */
+static int
+gcd(int a, int b)
+{
+	int c;
+
+	c = a % b;
+	while (c != 0) {
+		a = b;
+		b = c;
+		c = a % b;
+	}
+
+	return (b);
+}
+
+/*
+ * Exchange the block from nonopt_start to nonopt_end with the block
+ * from nonopt_end to opt_end (keeping the same order of arguments
+ * in each block).
+ */
+static void
+permute_args(int panonopt_start, int panonopt_end, int opt_end,
+	char * const *nargv)
+{
+	int cstart, cyclelen, i, j, ncycle, nnonopts, nopts, pos;
+	char *swap;
+
+	/*
+	 * compute lengths of blocks and number and size of cycles
+	 */
+	nnonopts = panonopt_end - panonopt_start;
+	nopts = opt_end - panonopt_end;
+	ncycle = gcd(nnonopts, nopts);
+	cyclelen = (opt_end - panonopt_start) / ncycle;
+
+	for (i = 0; i < ncycle; i++) {
+		cstart = panonopt_end+i;
+		pos = cstart;
+		for (j = 0; j < cyclelen; j++) {
+			if (pos >= panonopt_end)
+				pos -= nnonopts;
+			else
+				pos += nopts;
+			swap = nargv[pos];
+			/* LINTED const cast */
+			((char **) nargv)[pos] = nargv[cstart];
+			/* LINTED const cast */
+			((char **)nargv)[cstart] = swap;
+		}
+	}
+}
+
+/*
+ * parse_long_options --
+ *	Parse long options in argc/argv argument vector.
+ * Returns -1 if short_too is set and the option does not match long_options.
+ */
+static int
+parse_long_options(char * const *nargv, const char *options,
+	const struct option *long_options, int *idx, int short_too)
+{
+	char *current_argv, *has_equal;
+	size_t current_argv_len;
+	int i, match;
+
+	current_argv = place;
+	match = -1;
+
+	optind++;
+
+	if ((has_equal = strchr(current_argv, '=')) != NULL) {
+		/* argument found (--option=arg) */
+		current_argv_len = has_equal - current_argv;
+		has_equal++;
+	} else
+		current_argv_len = strlen(current_argv);
+
+	for (i = 0; long_options[i].name; i++) {
+		/* find matching long option */
+		if (strncmp(current_argv, long_options[i].name,
+		    current_argv_len))
+			continue;
+
+		if (strlen(long_options[i].name) == current_argv_len) {
+			/* exact match */
+			match = i;
+			break;
+		}
+		/*
+		 * If this is a known short option, don't allow
+		 * a partial match of a single character.
+		 */
+		if (short_too && current_argv_len == 1)
+			continue;
+
+		if (match == -1)	/* partial match */
+			match = i;
+		else {
+			/* ambiguous abbreviation */
+			if (PRINT_ERROR)
+				fprintf(stderr, 
+                        ambig, (int)current_argv_len,
+                        current_argv);
+			optopt = 0;
+			return (BADCH);
+		}
+	}
+	if (match != -1) {		/* option found */
+		if (long_options[match].has_arg == no_argument
+		    && has_equal) {
+			if (PRINT_ERROR)
+				fprintf(stderr,
+                        noarg, (int)current_argv_len,
+                        current_argv);
+			/*
+			 * XXX: GNU sets optopt to val regardless of flag
+			 */
+			if (long_options[match].flag == NULL)
+				optopt = long_options[match].val;
+			else
+				optopt = 0;
+			return (BADARG);
+		}
+		if (long_options[match].has_arg == required_argument ||
+		    long_options[match].has_arg == optional_argument) {
+			if (has_equal)
+				optarg = has_equal;
+			else if (long_options[match].has_arg ==
+			    required_argument) {
+				/*
+				 * optional argument doesn't use next nargv
+				 */
+				optarg = nargv[optind++];
+			}
+		}
+		if ((long_options[match].has_arg == required_argument)
+		    && (optarg == NULL)) {
+			/*
+			 * Missing argument; leading ':' indicates no error
+			 * should be generated.
+			 */
+			if (PRINT_ERROR)
+				fprintf(stderr, 
+                        recargstring,
+                        current_argv);
+			/*
+			 * XXX: GNU sets optopt to val regardless of flag
+			 */
+			if (long_options[match].flag == NULL)
+				optopt = long_options[match].val;
+			else
+				optopt = 0;
+			--optind;
+			return (BADARG);
+		}
+	} else {			/* unknown option */
+		if (short_too) {
+			--optind;
+			return (-1);
+		}
+		if (PRINT_ERROR)
+			fprintf(stderr, illoptstring, current_argv);
+		optopt = 0;
+		return (BADCH);
+	}
+	if (idx)
+		*idx = match;
+	if (long_options[match].flag) {
+		*long_options[match].flag = long_options[match].val;
+		return (0);
+	} else
+		return (long_options[match].val);
+}
+
+/*
+ * getopt_internal --
+ *	Parse argc/argv argument vector.  Called by user level routines.
+ */
+static int
+getopt_internal(int nargc, char * const *nargv, const char *options,
+	const struct option *long_options, int *idx, int flags)
+{
+	char *oli;				/* option letter list index */
+	int optchar, short_too;
+	static int posixly_correct = -1;
+
+	if (options == NULL)
+		return (-1);
+
+	/*
+	 * Disable GNU extensions if POSIXLY_CORRECT is set or options
+	 * string begins with a '+'.
+	 */
+	if (posixly_correct == -1)
+		posixly_correct = (getenv("POSIXLY_CORRECT") != NULL);
+	if (posixly_correct || *options == '+')
+		flags &= ~FLAG_PERMUTE;
+	else if (*options == '-')
+		flags |= FLAG_ALLARGS;
+	if (*options == '+' || *options == '-')
+		options++;
+
+	/*
+	 * XXX Some GNU programs (like cvs) set optind to 0 instead of
+	 * XXX using optreset.  Work around this braindamage.
+	 */
+	if (optind == 0)
+		optind = optreset = 1;
+
+	optarg = NULL;
+	if (optreset)
+		nonopt_start = nonopt_end = -1;
+start:
+	if (optreset || !*place) {		/* update scanning pointer */
+		optreset = 0;
+		if (optind >= nargc) {          /* end of argument vector */
+			place = EMSG;
+			if (nonopt_end != -1) {
+				/* do permutation, if we have to */
+				permute_args(nonopt_start, nonopt_end,
+				    optind, nargv);
+				optind -= nonopt_end - nonopt_start;
+			}
+			else if (nonopt_start != -1) {
+				/*
+				 * If we skipped non-options, set optind
+				 * to the first of them.
+				 */
+				optind = nonopt_start;
+			}
+			nonopt_start = nonopt_end = -1;
+			return (-1);
+		}
+		if (*(place = nargv[optind]) != '-' ||
+		    (place[1] == '\0' && strchr(options, '-') == NULL)) {
+			place = EMSG;		/* found non-option */
+			if (flags & FLAG_ALLARGS) {
+				/*
+				 * GNU extension:
+				 * return non-option as argument to option 1
+				 */
+				optarg = nargv[optind++];
+				return (INORDER);
+			}
+			if (!(flags & FLAG_PERMUTE)) {
+				/*
+				 * If no permutation wanted, stop parsing
+				 * at first non-option.
+				 */
+				return (-1);
+			}
+			/* do permutation */
+			if (nonopt_start == -1)
+				nonopt_start = optind;
+			else if (nonopt_end != -1) {
+				permute_args(nonopt_start, nonopt_end,
+				    optind, nargv);
+				nonopt_start = optind -
+				    (nonopt_end - nonopt_start);
+				nonopt_end = -1;
+			}
+			optind++;
+			/* process next argument */
+			goto start;
+		}
+		if (nonopt_start != -1 && nonopt_end == -1)
+			nonopt_end = optind;
+
+		/*
+		 * If we have "-" do nothing, if "--" we are done.
+		 */
+		if (place[1] != '\0' && *++place == '-' && place[1] == '\0') {
+			optind++;
+			place = EMSG;
+			/*
+			 * We found an option (--), so if we skipped
+			 * non-options, we have to permute.
+			 */
+			if (nonopt_end != -1) {
+				permute_args(nonopt_start, nonopt_end,
+				    optind, nargv);
+				optind -= nonopt_end - nonopt_start;
+			}
+			nonopt_start = nonopt_end = -1;
+			return (-1);
+		}
+	}
+
+	/*
+	 * Check long options if:
+	 *  1) we were passed some
+	 *  2) the arg is not just "-"
+	 *  3) either the arg starts with -- we are getopt_long_only()
+	 */
+	if (long_options != NULL && place != nargv[optind] &&
+	    (*place == '-' || (flags & FLAG_LONGONLY))) {
+		short_too = 0;
+		if (*place == '-')
+			place++;		/* --foo long option */
+		else if (*place != ':' && strchr(options, *place) != NULL)
+			short_too = 1;		/* could be short option too */
+
+		optchar = parse_long_options(nargv, options, long_options,
+		    idx, short_too);
+		if (optchar != -1) {
+			place = EMSG;
+			return (optchar);
+		}
+	}
+
+	if (((optchar = (int)*place++) == (int)':') ||
+	    (optchar == (int)'-' && *place != '\0') ||
+	    (oli = strchr(options, optchar)) == NULL) {
+		/*
+		 * If the user specified "-" and  '-' isn't listed in
+		 * options, return -1 (non-option) as per POSIX.
+		 * Otherwise, it is an unknown option character (or ':').
+		 */
+		if (optchar == (int)'-' && *place == '\0')
+			return (-1);
+		if (!*place)
+			++optind;
+		if (PRINT_ERROR)
+			fprintf(stderr, illoptchar, optchar);
+		optopt = optchar;
+		return (BADCH);
+	}
+	if (long_options != NULL && optchar == 'W' && oli[1] == ';') {
+		/* -W long-option */
+		if (*place)			/* no space */
+			/* NOTHING */;
+		else if (++optind >= nargc) {	/* no arg */
+			place = EMSG;
+			if (PRINT_ERROR)
+				fprintf(stderr, recargchar, optchar);
+			optopt = optchar;
+			return (BADARG);
+		} else				/* white space */
+			place = nargv[optind];
+		optchar = parse_long_options(nargv, options, long_options,
+		    idx, 0);
+		place = EMSG;
+		return (optchar);
+	}
+	if (*++oli != ':') {			/* doesn't take argument */
+		if (!*place)
+			++optind;
+	} else {				/* takes (optional) argument */
+		optarg = NULL;
+		if (*place)			/* no white space */
+			optarg = place;
+		/* XXX: disable test for :: if PC? (GNU doesn't) */
+		else if (oli[1] != ':') {	/* arg not optional */
+			if (++optind >= nargc) {	/* no arg */
+				place = EMSG;
+				if (PRINT_ERROR)
+					fprintf(stderr, recargchar, optchar);
+				optopt = optchar;
+				return (BADARG);
+			} else
+				optarg = nargv[optind];
+		} else if (!(flags & FLAG_PERMUTE)) {
+			/*
+			 * If permutation is disabled, we can accept an
+			 * optional arg separated by whitespace so long
+			 * as it does not start with a dash (-).
+			 */
+			if (optind + 1 < nargc && *nargv[optind + 1] != '-')
+				optarg = nargv[++optind];
+		}
+		place = EMSG;
+		++optind;
+	}
+	/* dump back option letter */
+	return (optchar);
+}
+
+#ifdef REPLACE_GETOPT
+/*
+ * getopt --
+ *	Parse argc/argv argument vector.
+ *
+ * [eventually this will replace the BSD getopt]
+ */
+int
+getopt(int nargc, char * const *nargv, const char *options)
+{
+
+	/*
+	 * We don't pass FLAG_PERMUTE to getopt_internal() since
+	 * the BSD getopt(3) (unlike GNU) has never done this.
+	 *
+	 * Furthermore, since many privileged programs call getopt()
+	 * before dropping privileges it makes sense to keep things
+	 * as simple (and bug-free) as possible.
+	 */
+	return (getopt_internal(nargc, nargv, options, NULL, NULL, 0));
+}
+#endif /* REPLACE_GETOPT */
+
+/*
+ * getopt_long --
+ *	Parse argc/argv argument vector.
+ */
+int
+getopt_long(int nargc, char * const *nargv, const char *options,
+    const struct option *long_options, int *idx)
+{
+
+	return (getopt_internal(nargc, nargv, options, long_options, idx,
+	    FLAG_PERMUTE));
+}
+
+/*
+ * getopt_long_only --
+ *	Parse argc/argv argument vector.
+ */
+int
+getopt_long_only(int nargc, char * const *nargv, const char *options,
+    const struct option *long_options, int *idx)
+{
+
+	return (getopt_internal(nargc, nargv, options, long_options, idx,
+	    FLAG_PERMUTE|FLAG_LONGONLY));
+}
diff --git a/libc/unistd/getpgrp.c b/libc/unistd/getpgrp.c
new file mode 100644
index 0000000..af7ced5
--- /dev/null
+++ b/libc/unistd/getpgrp.c
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <unistd.h>
+
+pid_t  getpgrp(void) 
+{
+  return getpgid(0);
+}
diff --git a/libc/unistd/getpriority.c b/libc/unistd/getpriority.c
new file mode 100644
index 0000000..efc9d4e
--- /dev/null
+++ b/libc/unistd/getpriority.c
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <sys/resource.h>
+
+extern int __getpriority(int, int);
+
+int getpriority(int which, int who)
+{
+  int result = __getpriority(which, who);
+
+  return ( result < 0 ) ? result : 20-result;
+}
diff --git a/libc/unistd/getpt.c b/libc/unistd/getpt.c
new file mode 100644
index 0000000..8bb5c11
--- /dev/null
+++ b/libc/unistd/getpt.c
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <unistd.h>
+#include <fcntl.h>
+
+int getpt(void)
+{
+  return open("/dev/ptmx", O_RDWR|O_NOCTTY);
+}
diff --git a/libc/unistd/initgroups.c b/libc/unistd/initgroups.c
new file mode 100644
index 0000000..dea6d96
--- /dev/null
+++ b/libc/unistd/initgroups.c
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <grp.h>
+#include <unistd.h>
+#include <stdlib.h>
+
+#define  INIT_GROUPS  2
+
+int
+initgroups (const char *user, gid_t group)
+{
+    gid_t   groups0[ INIT_GROUPS ];
+    gid_t*  groups    = groups0;
+    int     ret       = -1;
+    int     numgroups = INIT_GROUPS;
+
+    if (getgrouplist(user, group, groups, &numgroups) < 0) {
+        groups = malloc(numgroups*sizeof(groups[0]));
+        if (groups == NULL)
+            return -1;
+        if (getgrouplist(user,group,groups,&numgroups) < 0) {
+            goto EXIT;
+        }
+    }
+
+    ret = setgroups(numgroups, groups);
+
+EXIT:
+    if (groups != groups0)
+        free(groups);
+
+    return ret;
+}
diff --git a/libc/unistd/isatty.c b/libc/unistd/isatty.c
new file mode 100644
index 0000000..93af6c5
--- /dev/null
+++ b/libc/unistd/isatty.c
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <unistd.h>
+#include <termios.h>
+#include <errno.h>
+
+int
+isatty (int  fd)
+{
+  struct termios term;
+
+  return tcgetattr (fd, &term) == 0;
+}
diff --git a/libc/unistd/issetugid.c b/libc/unistd/issetugid.c
new file mode 100644
index 0000000..81f8e41
--- /dev/null
+++ b/libc/unistd/issetugid.c
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <unistd.h>
+
+int  issetugid(void)
+{
+    /* for Bionic, this is sufficient */
+    return 0;
+}
+
diff --git a/libc/unistd/lseek64.c b/libc/unistd/lseek64.c
new file mode 100644
index 0000000..017b331
--- /dev/null
+++ b/libc/unistd/lseek64.c
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <unistd.h>
+
+extern int __llseek(int fd, unsigned long  offset_hi, unsigned long  offset_lo, loff_t*  result, int  whence);
+
+loff_t lseek64(int fd, loff_t off, int whence)
+{
+    loff_t  result;
+
+    if ( __llseek(fd, (unsigned long)(off >> 32),(unsigned long)(off), &result, whence ) < 0 )
+        return -1;
+
+    return result;
+}
diff --git a/libc/unistd/mmap.c b/libc/unistd/mmap.c
new file mode 100644
index 0000000..848abbb
--- /dev/null
+++ b/libc/unistd/mmap.c
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <unistd.h>
+#include <errno.h>
+#include <sys/mman.h>
+
+extern void*  __mmap2(void*, size_t, int, int, int, size_t);
+
+#define  MMAP2_SHIFT  12
+void*   mmap( void*  addr,  size_t  size, int  prot, int  flags, int  fd,  long  offset )
+{
+    if ( offset & ((1UL << MMAP2_SHIFT)-1) ) {
+    errno = EINVAL;
+    return MAP_FAILED;
+  }
+
+    return __mmap2(addr, size, prot, flags, fd, (size_t)offset >> MMAP2_SHIFT);
+}
diff --git a/libc/unistd/nice.c b/libc/unistd/nice.c
new file mode 100644
index 0000000..09b6469
--- /dev/null
+++ b/libc/unistd/nice.c
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <sys/resource.h>
+
+int nice(int increment)
+{
+    int  priority = getpriority(PRIO_PROCESS, 0);
+
+    return setpriority( PRIO_PROCESS, 0, priority+increment);
+}
diff --git a/libc/unistd/open.c b/libc/unistd/open.c
new file mode 100644
index 0000000..e8b1c89
--- /dev/null
+++ b/libc/unistd/open.c
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <unistd.h>
+#include <fcntl.h>
+#include <stdarg.h>
+
+extern int  __open(const char*, int, int);
+
+int open(const char *pathname, int flags, ...)
+{
+    mode_t  mode = 0;
+
+#if !defined(__i386__)
+    flags |= O_LARGEFILE;
+#endif
+
+    if (flags & O_CREAT)
+    {
+        va_list  args;
+
+        va_start(args, flags);
+        mode = (mode_t) va_arg(args, int);
+        va_end(args);
+    }
+
+    return __open(pathname, flags, mode);
+}
+
diff --git a/libc/unistd/openat.c b/libc/unistd/openat.c
new file mode 100644
index 0000000..88b39a4
--- /dev/null
+++ b/libc/unistd/openat.c
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <unistd.h>
+#include <fcntl.h>
+#include <stdarg.h>
+
+extern int  __openat(int, const char*, int, int);
+
+int openat(int fd, const char *pathname, int flags, ...)
+{
+    mode_t  mode = 0;
+
+#if !defined(__i386__)
+    flags |= O_LARGEFILE;
+#endif
+
+    if (flags & O_CREAT)
+    {
+        va_list  args;
+
+        va_start(args, flags);
+        mode = (mode_t) va_arg(args, int);
+        va_end(args);
+    }
+
+    return __openat(fd, pathname, flags, mode);
+}
+
diff --git a/libc/unistd/opendir.c b/libc/unistd/opendir.c
new file mode 100644
index 0000000..afa3ea0
--- /dev/null
+++ b/libc/unistd/opendir.c
@@ -0,0 +1,267 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <unistd.h>
+#include <dirent.h>
+#include <memory.h>
+#include <string.h>
+#include <fcntl.h>
+#include <stdlib.h>
+#include <pthread.h>
+#include <errno.h>
+
+struct DIR
+{
+    int              _DIR_fd;
+    size_t           _DIR_avail;
+    struct dirent*   _DIR_next;
+    pthread_mutex_t  _DIR_lock;
+    struct dirent    _DIR_buff[15];
+};
+
+int dirfd(DIR* dirp)
+{
+    return dirp->_DIR_fd;
+}
+
+DIR*  opendir( const char*  dirpath )
+{
+    DIR*  dir = malloc(sizeof(DIR));
+
+    if (!dir)
+        goto Exit;
+
+    dir->_DIR_fd = open(dirpath, O_RDONLY|O_DIRECTORY);
+    if (dir->_DIR_fd < 0)
+    {
+        free(dir);
+        dir = NULL;
+    }
+    else
+    {
+        dir->_DIR_avail = 0;
+        dir->_DIR_next  = NULL;
+        pthread_mutex_init( &dir->_DIR_lock, NULL );
+    }
+Exit:
+    return dir;
+}
+
+
+DIR*  fdopendir(int fd)
+{
+    DIR*  dir = malloc(sizeof(DIR));
+
+    if (!dir)
+        return 0;
+
+    dir->_DIR_fd = fd;
+    dir->_DIR_avail = 0;
+    dir->_DIR_next  = NULL;
+    pthread_mutex_init( &dir->_DIR_lock, NULL );
+
+    return dir;
+}
+
+
+static struct dirent*
+_readdir_unlocked(DIR*  dir)
+{
+    struct dirent*  entry;
+
+    if ( !dir->_DIR_avail )
+    {
+        int  rc;
+
+        for (;;) {
+            rc = getdents( dir->_DIR_fd, dir->_DIR_buff, sizeof(dir->_DIR_buff));
+            if (rc >= 0 || errno != EINTR)
+            break;
+        }
+        if (rc <= 0)
+            return NULL;
+
+        dir->_DIR_avail = rc;
+        dir->_DIR_next  = dir->_DIR_buff;
+    }
+
+    entry = dir->_DIR_next;
+
+    /* perform some sanity checks here */
+    if (((long)(void*)entry & 3) != 0)
+        return NULL;
+
+    if ( (unsigned)entry->d_reclen > sizeof(*entry)         ||
+         entry->d_reclen <= offsetof(struct dirent, d_name) )
+        goto Bad;
+
+    if ( (char*)entry + entry->d_reclen > (char*)dir->_DIR_buff + sizeof(dir->_DIR_buff) )
+        goto Bad;
+
+    if ( !memchr( entry->d_name, 0, entry->d_reclen - offsetof(struct dirent, d_name)) )
+        goto Bad; 
+
+    dir->_DIR_next   = (struct dirent*)((char*)entry + entry->d_reclen);
+    dir->_DIR_avail -= entry->d_reclen;
+
+    return entry;
+
+  Bad:
+    errno = EINVAL;
+    return NULL;
+}
+
+
+struct dirent*
+readdir(DIR * dir)
+{
+    struct dirent *entry = NULL;
+
+    pthread_mutex_lock( &dir->_DIR_lock );
+    entry = _readdir_unlocked(dir);
+    pthread_mutex_unlock( &dir->_DIR_lock );
+
+    return entry;
+}
+
+
+int readdir_r(DIR*  dir, struct dirent *entry, struct dirent **result)
+{
+    struct dirent*  ent;
+    int  save_errno = errno;
+    int  retval;
+
+    *result = NULL;
+    errno   = 0;
+
+    pthread_mutex_lock( &dir->_DIR_lock );
+
+    ent    = _readdir_unlocked(dir);
+    retval = errno;
+    if (ent == NULL) {
+        if (!retval) {
+            errno = save_errno;
+        }
+    } else {
+        if (!retval) {
+            errno   = save_errno;
+            *result = entry;
+            memcpy( entry, ent, ent->d_reclen );
+        }
+    }
+
+    pthread_mutex_unlock( &dir->_DIR_lock );
+
+    return retval;
+}
+
+
+
+int closedir(DIR *dir)
+{
+  int rc;
+
+  rc = close(dir->_DIR_fd);
+  dir->_DIR_fd = -1;
+
+  pthread_mutex_destroy( &dir->_DIR_lock );
+
+  free(dir);
+  return rc;
+}
+
+
+void   rewinddir(DIR *dir)
+{
+    pthread_mutex_lock( &dir->_DIR_lock );
+    lseek( dir->_DIR_fd, 0, SEEK_SET );
+    dir->_DIR_avail = 0;
+    pthread_mutex_unlock( &dir->_DIR_lock );
+}
+
+
+int alphasort(const void *a, const void *b)
+{
+        struct dirent **d1, **d2;
+
+        d1 = (struct dirent **) a;
+        d2 = (struct dirent **) b;
+        return strcmp((*d1)->d_name, (*d2)->d_name);
+}
+
+
+int scandir(const char *dir, struct dirent ***namelist,
+            int(*filter)(const struct dirent *),
+            int(*compar)(const struct dirent **, const struct dirent **))
+{
+    DIR *d;
+    int n_elem = 0;
+    struct dirent *this_de, *de;
+    struct dirent **de_list = NULL;
+    int de_list_size = 0;
+
+    d = opendir(dir);
+    if (d == NULL) {
+        return -1;
+    }
+
+    while ((this_de = readdir(d)) != NULL) {
+        if (filter && (*filter)(this_de) == 0) {
+            continue;
+        }
+        if (n_elem == 0) {
+            de_list_size = 4;
+            de_list = (struct dirent **) 
+                    malloc(sizeof(struct dirent *)*de_list_size);
+            if (de_list == NULL) {
+                return -1;
+            }
+        }
+        else if (n_elem == de_list_size) {
+            struct dirent **de_list_new;
+
+            de_list_size += 10;
+            de_list_new = (struct dirent **) 
+                    realloc(de_list, sizeof(struct dirent *)*de_list_size);
+            if (de_list_new == NULL) {
+                free(de_list);
+                return -1;
+            }
+            de_list = de_list_new;
+        }
+        de = (struct dirent *) malloc(sizeof(struct dirent));
+        *de = *this_de;
+        de_list[n_elem++] = de;
+    }
+    closedir(d);
+    if (n_elem && compar) {
+        qsort(de_list, n_elem, sizeof(struct dirent *), 
+              (int (*)(const void *, const void *)) compar);
+    }
+    *namelist = de_list;
+    return n_elem;
+}
diff --git a/libc/unistd/pathconf.c b/libc/unistd/pathconf.c
new file mode 100644
index 0000000..032f918
--- /dev/null
+++ b/libc/unistd/pathconf.c
@@ -0,0 +1,273 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <pathconf.h>
+#include <sys/vfs.h>
+#include <sys/limits.h>
+#include <linux/ext2_fs.h>
+#include <linux/ext3_fs.h>
+#include <errno.h>
+
+/* these may not be defined yet by our headers */
+#ifndef _POSIX_VDISABLE
+#define _POSIX_VDISABLE  -1
+#endif
+
+#ifndef _POSIX_SYNC_IO
+#define _POSIX_SYNC_IO  -1
+#endif
+
+#ifndef _POSIX_PRIO_IO
+#define _POSIX_PRIO_IO  -1
+#endif
+
+#ifndef _POSIX_ASYNC_IO
+#define _POSIX_ASYNC_IO  -1
+#endif
+
+
+static long
+__filesizebits( struct statfs*  s )
+{
+#define   EOL_MAGIC   0x0000U
+
+    /* list of known 64-bit aware filesystems */
+    static const uint32_t  known64[] = {
+        EXT2_SUPER_MAGIC,
+        UFS_MAGIC,
+        REISERFS_SUPER_MAGIC,
+        XFS_SUPER_MAGIC,
+        SMB_SUPER_MAGIC,
+        UDF_SUPER_MAGIC,
+        JFS_SUPER_MAGIC,
+        NTFS_SB_MAGIC,
+        VXFS_SUPER_MAGIC,
+        EOL_MAGIC
+    };
+    int  nn = 0;
+
+    for (;;) {
+        if ( known64[nn] == EOL_MAGIC )
+            return 32;
+
+        if ( known64[nn] == s->f_type )
+            return 64;
+    }
+}
+
+
+static long
+__link_max( struct statfs*  s )
+{
+   /* constant values were taken from official kernel headers.
+    * I don't think this justified bringing in <linux/minix_fs.h> et al
+    * into our cleaned-up kernel three
+    */
+    static const struct { uint32_t  type; int  max; }  knownMax[] =
+    {
+        { EXT2_SUPER_MAGIC, EXT2_LINK_MAX },
+        { EXT3_SUPER_MAGIC, EXT3_LINK_MAX },
+        { MINIX_SUPER_MAGIC, 250 },
+        { MINIX2_SUPER_MAGIC, 65530 },
+        { REISERFS_SUPER_MAGIC, 0xffff - 1000 },
+        { UFS_MAGIC, 32000 },
+        { EOL_MAGIC, 0 }
+    };
+    int   nn = 0;
+
+    for (;;) {
+        if ( knownMax[nn].type == EOL_MAGIC )
+            return LINK_MAX;
+
+        if ( knownMax[nn].type == s->f_type )
+            return knownMax[nn].max;
+    }
+    return LINK_MAX;
+}
+
+static long
+__2_symlinks( struct statfs*  s )
+{
+    /* list of know filesystems that don't support symlinks */
+    static const uint32_t  knownNoSymlinks[] = {
+        ADFS_SUPER_MAGIC, BFS_MAGIC, CRAMFS_MAGIC,
+        EFS_SUPER_MAGIC, MSDOS_SUPER_MAGIC, NTFS_SB_MAGIC,
+        QNX4_SUPER_MAGIC,
+        EOL_MAGIC
+    };
+    int  nn = 0;
+
+    for (;;) {
+        if (knownNoSymlinks[nn] == 0)
+            return 1;
+        if (knownNoSymlinks[nn] == s->f_type)
+            return 0;
+    }
+}
+
+static long
+__name_max( struct statfs*  s )
+{
+    return s->f_namelen;
+}
+
+long
+pathconf(const char *path, int name)
+{
+    struct statfs  buf;
+    int            ret = statfs( path, &buf );
+
+    if (ret < 0)
+        return -1;
+
+    switch (name) {
+    case _PC_FILESIZEBITS:
+        return __filesizebits(&buf);
+
+    case _PC_LINK_MAX:
+        return __link_max(&buf);
+
+    case _PC_MAX_CANON:
+        return MAX_CANON;
+
+    case _PC_MAX_INPUT:
+        return MAX_INPUT;
+
+    case _PC_NAME_MAX:
+        return __name_max(&buf);
+
+    case _PC_PATH_MAX:
+        return PATH_MAX;
+
+    case _PC_PIPE_BUF:
+        return PIPE_BUF;
+
+    case _PC_2_SYMLINKS:
+        return __2_symlinks(&buf);
+
+#if 0  /* don't know what to do there, the specs are really weird */
+    case _PC_ALLOC_SIZE_MIN:
+    case _PC_REC_INCR_XFER_SIZE:
+    case _PC_REC_MAX_XFER_SIZE:
+    case _PC_REC_MIN_XFER_SIZE:
+    case _PC_REC_XFER_ALIGN:
+#endif
+
+    case _PC_SYMLINK_MAX:
+        return -1;  /* no limit */
+
+    case _PC_CHOWN_RESTRICTED:
+        return _POSIX_CHOWN_RESTRICTED;
+
+    case _PC_NO_TRUNC:
+        return _POSIX_NO_TRUNC;
+
+    case _PC_VDISABLE:
+        return _POSIX_VDISABLE;
+
+    case _PC_ASYNC_IO:
+        return _POSIX_ASYNC_IO;
+
+    case _PC_PRIO_IO:
+        return _POSIX_PRIO_IO;
+
+    case _PC_SYNC_IO:
+        return _POSIX_SYNC_IO;
+
+    default:
+        errno = EINVAL;
+        return -1;
+    }
+}
+
+long fpathconf(int fildes, int name)
+{
+    struct statfs  buf;
+    int            ret = fstatfs(fildes, &buf);
+
+    if (ret < 0)
+        return -1;
+
+    switch (name) {
+    case _PC_FILESIZEBITS:
+        return __filesizebits(&buf);
+
+    case _PC_LINK_MAX:
+        return __link_max(&buf);
+
+    case _PC_MAX_CANON:
+        return MAX_CANON;
+
+    case _PC_MAX_INPUT:
+        return MAX_INPUT;
+
+    case _PC_NAME_MAX:
+        return __name_max(&buf);
+
+    case _PC_PATH_MAX:
+        return PATH_MAX;
+
+    case _PC_PIPE_BUF:
+        return PIPE_BUF;
+
+    case _PC_2_SYMLINKS:
+        return __2_symlinks(&buf);
+
+#if 0  /* don't know what to do there, the specs are really weird */
+    case _PC_ALLOC_SIZE_MIN:
+    case _PC_REC_INCR_XFER_SIZE:
+    case _PC_REC_MAX_XFER_SIZE:
+    case _PC_REC_MIN_XFER_SIZE:
+    case _PC_REC_XFER_ALIGN:
+#endif
+
+    case _PC_SYMLINK_MAX:
+        return -1;  /* no limit */
+
+    case _PC_CHOWN_RESTRICTED:
+        return _POSIX_CHOWN_RESTRICTED;
+
+    case _PC_NO_TRUNC:
+        return _POSIX_NO_TRUNC;
+
+    case _PC_VDISABLE:
+        return _POSIX_VDISABLE;
+
+    case _PC_ASYNC_IO:
+        return _POSIX_ASYNC_IO;
+
+    case _PC_PRIO_IO:
+        return _POSIX_PRIO_IO;
+
+    case _PC_SYNC_IO:
+        return _POSIX_SYNC_IO;
+
+    default:
+        errno = EINVAL;
+        return -1;
+    }
+}
diff --git a/libc/unistd/perror.c b/libc/unistd/perror.c
new file mode 100644
index 0000000..de55f72
--- /dev/null
+++ b/libc/unistd/perror.c
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <errno.h>
+#include <unistd.h>
+#include <string.h>
+
+void perror(const char *prefix)
+{
+    char   buff[256];
+
+    strerror_r( errno, buff, sizeof(buff) );
+
+    if (prefix) {
+        write( 2, prefix, strlen(prefix) );
+        write( 2, ": ", 2 );
+    }
+    write( 2, buff, strlen(buff) );
+    write( 2, "\n", 1 );
+}
diff --git a/libc/unistd/popen.c b/libc/unistd/popen.c
new file mode 100644
index 0000000..15f8325
--- /dev/null
+++ b/libc/unistd/popen.c
@@ -0,0 +1,167 @@
+/*	$OpenBSD: popen.c,v 1.17 2005/08/08 08:05:34 espie Exp $ */
+/*
+ * Copyright (c) 1988, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software written by Ken Arnold and
+ * published in UNIX Review, Vol. 6, No. 8.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/param.h>
+#include <sys/wait.h>
+
+#include <signal.h>
+#include <errno.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <paths.h>
+
+static struct pid {
+	struct pid *next;
+	FILE *fp;
+	pid_t pid;
+} *pidlist;
+
+FILE *
+popen(const char *program, const char *type)
+{
+	struct pid * volatile cur;
+	FILE *iop;
+	int pdes[2];
+	pid_t pid;
+
+	if ((*type != 'r' && *type != 'w') || type[1] != '\0') {
+		errno = EINVAL;
+		return (NULL);
+	}
+
+	if ((cur = malloc(sizeof(struct pid))) == NULL)
+		return (NULL);
+
+	if (pipe(pdes) < 0) {
+		free(cur);
+		return (NULL);
+	}
+
+	switch (pid = vfork()) {
+	case -1:			/* Error. */
+		(void)close(pdes[0]);
+		(void)close(pdes[1]);
+		free(cur);
+		return (NULL);
+		/* NOTREACHED */
+	case 0:				/* Child. */
+	    {
+		struct pid *pcur;
+		/*
+		 * because vfork() instead of fork(), must leak FILE *,
+		 * but luckily we are terminally headed for an execl()
+		 */
+		for (pcur = pidlist; pcur; pcur = pcur->next)
+			close(fileno(pcur->fp));
+
+		if (*type == 'r') {
+			int tpdes1 = pdes[1];
+
+			(void) close(pdes[0]);
+			/*
+			 * We must NOT modify pdes, due to the
+			 * semantics of vfork.
+			 */
+			if (tpdes1 != STDOUT_FILENO) {
+				(void)dup2(tpdes1, STDOUT_FILENO);
+				(void)close(tpdes1);
+				tpdes1 = STDOUT_FILENO;
+			}
+		} else {
+			(void)close(pdes[1]);
+			if (pdes[0] != STDIN_FILENO) {
+				(void)dup2(pdes[0], STDIN_FILENO);
+				(void)close(pdes[0]);
+			}
+		}
+		execl(_PATH_BSHELL, "sh", "-c", program, (char *)NULL);
+		_exit(127);
+		/* NOTREACHED */
+	    }
+	}
+
+	/* Parent; assume fdopen can't fail. */
+	if (*type == 'r') {
+		iop = fdopen(pdes[0], type);
+		(void)close(pdes[1]);
+	} else {
+		iop = fdopen(pdes[1], type);
+		(void)close(pdes[0]);
+	}
+
+	/* Link into list of file descriptors. */
+	cur->fp = iop;
+	cur->pid =  pid;
+	cur->next = pidlist;
+	pidlist = cur;
+
+	return (iop);
+}
+
+/*
+ * pclose --
+ *	Pclose returns -1 if stream is not associated with a `popened' command,
+ *	if already `pclosed', or waitpid returns an error.
+ */
+int
+pclose(FILE *iop)
+{
+	struct pid *cur, *last;
+	int pstat;
+	pid_t pid;
+
+	/* Find the appropriate file pointer. */
+	for (last = NULL, cur = pidlist; cur; last = cur, cur = cur->next)
+		if (cur->fp == iop)
+			break;
+
+	if (cur == NULL)
+		return (-1);
+
+	(void)fclose(iop);
+
+	do {
+		pid = waitpid(cur->pid, &pstat, 0);
+	} while (pid == -1 && errno == EINTR);
+
+	/* Remove the entry from the linked list. */
+	if (last == NULL)
+		pidlist = cur->next;
+	else
+		last->next = cur->next;
+	free(cur);
+
+	return (pid == -1 ? -1 : pstat);
+}
diff --git a/libc/unistd/pread.c b/libc/unistd/pread.c
new file mode 100644
index 0000000..d2f71f7
--- /dev/null
+++ b/libc/unistd/pread.c
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * modification, are permitted provided that the following conditions are met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *     * Neither the name of Google Inc. nor the names of its contributors may
+ *       be used to endorse or promote products derived from this software
+ *       without specific prior written permission.
+ *
+*/
+#include <sys/types.h>
+#include <unistd.h>
+
+extern int __pread64(int fd, void *buf, size_t nbytes, off_t lo, off_t hi);
+
+ssize_t pread(int fd, void *buf, size_t nbytes, off_t offset)
+{
+    return __pread64(fd, buf, nbytes, offset, 0);
+}
+
diff --git a/libc/unistd/pselect.c b/libc/unistd/pselect.c
new file mode 100644
index 0000000..76ce2c0
--- /dev/null
+++ b/libc/unistd/pselect.c
@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <sys/select.h>
+#include <signal.h>
+#include <pthread.h>
+
+int
+pselect(int  n, fd_set*  readfds, fd_set*  writefds, fd_set*  errfds,
+        const struct timespec*  timeout, const sigset_t*  sigmask)
+{
+    sigset_t        oldmask;
+    int             result;
+    struct timeval  tv, *tv_timeout = NULL;
+
+    if (sigmask != NULL)
+        pthread_sigmask( SIG_SETMASK, sigmask, &oldmask );
+
+    if (timeout != NULL) {
+        tv_timeout = &tv;
+        tv.tv_sec  = timeout->tv_sec;
+        tv.tv_usec = (timeout->tv_nsec + 999)/1000;  // round up
+        if (tv.tv_usec >= 1000000) {
+            tv.tv_sec  += 1;
+            tv.tv_usec -= 1000000;
+        }
+    }
+
+    result = select( n, readfds, writefds, errfds, tv_timeout );
+
+    if (sigmask != NULL)
+        pthread_sigmask( SIG_SETMASK, &oldmask, NULL );
+
+    return result;
+}
diff --git a/libc/unistd/ptsname.c b/libc/unistd/ptsname.c
new file mode 100644
index 0000000..24d5d30
--- /dev/null
+++ b/libc/unistd/ptsname.c
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <stdio.h>
+#include <unistd.h>
+#include <termios.h>
+#include <sys/ioctl.h>
+
+/* not thread-safe */
+char*  ptsname( int fd )
+{
+    unsigned int  pty_num;
+    static char   buff[64];
+
+    if ( ioctl( fd, TIOCGPTN, &pty_num ) != 0 )
+        return NULL;
+
+    snprintf( buff, sizeof(buff), "/dev/pts/%u", pty_num );
+    return buff;
+}
diff --git a/libc/unistd/ptsname_r.c b/libc/unistd/ptsname_r.c
new file mode 100644
index 0000000..1ed067b
--- /dev/null
+++ b/libc/unistd/ptsname_r.c
@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <stdio.h>
+#include <unistd.h>
+#include <termios.h>
+#include <sys/ioctl.h>
+#include <errno.h>
+#include <string.h>
+
+char*  ptsname_r( int  fd, char*  buf, size_t  buflen)
+{
+    unsigned int  pty_num;
+    char          buff[64];
+    int           len;
+
+    if (buf == NULL) {
+        errno = EINVAL;
+        return NULL;
+    }
+
+    if ( ioctl( fd, TIOCGPTN, &pty_num ) != 0 )
+        return NULL;
+
+    len = snprintf( buff, sizeof(buff), "/dev/pts/%u", pty_num );
+    if (len+1 > (int)buflen) {
+        errno = ERANGE;
+        return NULL;
+    }
+    memcpy( buf, buff, len+1 );
+    return buf;
+}
diff --git a/libc/unistd/pwrite.c b/libc/unistd/pwrite.c
new file mode 100644
index 0000000..5adf40a
--- /dev/null
+++ b/libc/unistd/pwrite.c
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <sys/types.h>
+#include <unistd.h>
+
+extern int __pwrite64(int fd, void *buf, size_t nbytes, off_t lo, off_t hi);
+
+ssize_t pwrite(int fd, void *buf, size_t nbytes, off_t offset)
+{
+    return __pwrite64(fd, buf, nbytes, offset, 0);
+}
+
diff --git a/libc/unistd/raise.c b/libc/unistd/raise.c
new file mode 100644
index 0000000..de099da
--- /dev/null
+++ b/libc/unistd/raise.c
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <unistd.h>
+#include <signal.h>
+
+int raise(int signum)
+{
+    return kill(getpid(), signum);
+}
diff --git a/libc/unistd/reboot.c b/libc/unistd/reboot.c
new file mode 100644
index 0000000..0fe8cdc
--- /dev/null
+++ b/libc/unistd/reboot.c
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <unistd.h>
+#include <sys/reboot.h>
+
+int reboot (int  mode) 
+{
+    return __reboot( LINUX_REBOOT_MAGIC1, LINUX_REBOOT_MAGIC2, mode, NULL );
+}
diff --git a/libc/unistd/recv.c b/libc/unistd/recv.c
new file mode 100644
index 0000000..779d7fa
--- /dev/null
+++ b/libc/unistd/recv.c
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <stddef.h>
+#include <sys/socket.h>
+
+ssize_t recv(int socket, void *buf, size_t buflen, unsigned int flags)
+{
+    return recvfrom(socket, buf, buflen, flags, NULL, 0);
+}
diff --git a/libc/unistd/sbrk.c b/libc/unistd/sbrk.c
new file mode 100644
index 0000000..a112b6c
--- /dev/null
+++ b/libc/unistd/sbrk.c
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <unistd.h>
+#include <errno.h>
+
+
+#define  SBRK_ALIGN  32
+
+/* shared with brk() implementation */
+char*   __bionic_brk;
+
+void *sbrk(ptrdiff_t increment)
+{
+    char*  start;
+    char*  end;
+    char*  new_brk;
+  
+    if ( !__bionic_brk)
+        __bionic_brk = __brk((void*)0);
+
+    start = (char*)(((long)__bionic_brk + SBRK_ALIGN-1) & ~(SBRK_ALIGN-1));
+  end   = start + increment;
+
+  new_brk = __brk(end);
+    if (new_brk == (void*)-1)
+        return new_brk;
+    else if (new_brk < end)
+    {
+    errno = ENOMEM;
+        return (void*)-1;
+  }
+
+    __bionic_brk = new_brk;
+  return start;
+}
diff --git a/libc/unistd/send.c b/libc/unistd/send.c
new file mode 100644
index 0000000..9978f98
--- /dev/null
+++ b/libc/unistd/send.c
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <stddef.h>
+#include <sys/socket.h>
+
+ssize_t send(int socket, const void *buf, size_t buflen, unsigned int flags)
+{
+    return (ssize_t) sendto(socket, buf, buflen, flags, NULL, 0);
+}
diff --git a/libc/unistd/setegid.c b/libc/unistd/setegid.c
new file mode 100644
index 0000000..9bd697b
--- /dev/null
+++ b/libc/unistd/setegid.c
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <unistd.h>
+
+int setegid(gid_t egid)
+{
+    return setresgid(-1, egid, -1);
+}
diff --git a/libc/unistd/seteuid.c b/libc/unistd/seteuid.c
new file mode 100644
index 0000000..42ee780
--- /dev/null
+++ b/libc/unistd/seteuid.c
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <unistd.h>
+
+int seteuid(uid_t euid)
+{
+    return setresuid(-1, euid,-1);
+}
diff --git a/libc/unistd/setpgrp.c b/libc/unistd/setpgrp.c
new file mode 100644
index 0000000..6dff822
--- /dev/null
+++ b/libc/unistd/setpgrp.c
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <unistd.h>
+
+int setpgrp(void)
+{
+  return setpgid(0,0);
+}
diff --git a/libc/unistd/sigblock.c b/libc/unistd/sigblock.c
new file mode 100644
index 0000000..863d7da
--- /dev/null
+++ b/libc/unistd/sigblock.c
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <signal.h>
+
+/* this function is called from the ARM assembly setjmp fragments */
+int
+sigblock(int mask)
+{
+    int  n;
+    union {
+        int       the_mask;
+        sigset_t  the_sigset;
+    } in, out;
+
+    in.the_mask = mask;
+
+    n = sigprocmask(SIG_BLOCK, &in.the_sigset, &out.the_sigset);
+    if (n)
+        return n;
+
+    return out.the_mask;
+}
+
+
diff --git a/libc/unistd/siginterrupt.c b/libc/unistd/siginterrupt.c
new file mode 100644
index 0000000..4e91edb
--- /dev/null
+++ b/libc/unistd/siginterrupt.c
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <signal.h>
+
+/* this is only useful for legacy programs */
+int siginterrupt(int sig, int flag) 
+{
+    struct sigaction act;
+
+    (void) sigaction(sig, NULL, &act);
+
+    if (flag)
+        act.sa_flags &= ~SA_RESTART;
+    else
+        act.sa_flags |= SA_RESTART;
+
+    return sigaction(sig, &act, NULL);
+}
+
diff --git a/libc/unistd/siglist.c b/libc/unistd/siglist.c
new file mode 100644
index 0000000..a2ac9fe
--- /dev/null
+++ b/libc/unistd/siglist.c
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <signal.h>
+
+const char * const sys_siglist[NSIG] = {
+#define  __BIONIC_SIGDEF(x,y,z)   [ x ] = z,
+#include <sys/_sigdefs.h>
+};
diff --git a/libc/unistd/signal.c b/libc/unistd/signal.c
new file mode 100644
index 0000000..949db13
--- /dev/null
+++ b/libc/unistd/signal.c
@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <signal.h>
+
+
+static __sighandler_t
+_signal(int  signum, __sighandler_t  handler, int  flags)
+{
+    struct sigaction  sa;
+    __sighandler_t    result = SIG_ERR;
+
+    sigemptyset( &sa.sa_mask );
+
+    sa.sa_handler = handler;
+    sa.sa_flags   = flags;
+
+    if ( !sigaction( signum, &sa, &sa ) )
+        result = (__sighandler_t) sa.sa_handler;
+
+    return result;
+}
+
+
+__sighandler_t bsd_signal(int signum, __sighandler_t handler)
+{
+  return _signal(signum, handler, SA_RESTART);
+}
+
+__sighandler_t sysv_signal(int signum, __sighandler_t handler)
+{
+  return _signal(signum, handler, SA_RESETHAND);
+}
diff --git a/libc/unistd/sigsetmask.c b/libc/unistd/sigsetmask.c
new file mode 100644
index 0000000..b987595
--- /dev/null
+++ b/libc/unistd/sigsetmask.c
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <signal.h>
+
+/* called from setjmp assembly fragment */
+int
+sigsetmask(int mask)
+{
+    int  n;
+
+    union {
+        int       the_mask;
+        sigset_t  the_sigset;
+    } in, out;
+
+    n = sigprocmask(SIG_SETMASK, &in.the_sigset, &out.the_sigset);
+    if (n)
+        return n;
+
+    return out.the_mask;
+}
+
diff --git a/libc/unistd/sigsuspend.c b/libc/unistd/sigsuspend.c
new file mode 100644
index 0000000..0db05ed
--- /dev/null
+++ b/libc/unistd/sigsuspend.c
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <signal.h>
+
+extern int __sigsuspend(int, int, unsigned int);
+
+int sigsuspend(const sigset_t *_mask)
+{
+    unsigned int    mask = (unsigned int)*_mask;
+
+	return __sigsuspend(0, 0, mask);
+}
diff --git a/libc/unistd/sigwait.c b/libc/unistd/sigwait.c
new file mode 100644
index 0000000..c9c2a54
--- /dev/null
+++ b/libc/unistd/sigwait.c
@@ -0,0 +1,74 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <errno.h>
+#include <signal.h>
+#include <string.h>
+#include <time.h>
+
+int __rt_sigtimedwait(const sigset_t *uthese, siginfo_t *uinfo, const struct timespec *uts, size_t sigsetsize);
+
+/* ok, this is really subtle: <asm/signal.h> defines sigset_t differently
+ * when you're in the kernel or in the C library.
+ *
+ * in the kernel, this is an array of 2 32-bit unsigned longs
+ * in the C library, this is a single 32-bit unsigned long
+ *
+ * moreover, the kernel implementation of rt_sigtimedwait doesn't
+ * accept anything except kernel-sized signal sets (probably a bug !)
+ *
+ * we thus need to create a fake kernel sigset !!
+ */
+
+int sigwait(const sigset_t *set, int *sig)
+{
+    int  ret;
+    /* use a union to get rid of aliasing warnings */
+    union {
+      unsigned long  kernel_sigset[2];
+      sigset_t       dummy_sigset;
+    } u;
+
+    u.kernel_sigset[0] = *set;
+    u.kernel_sigset[1] = 0;  /* no real-time signals supported ? */
+    for (;;)
+    {
+     /* __rt_sigtimedwait can return EAGAIN or EINTR, we need to loop
+      * around them since sigwait is only allowed to return EINVAL
+      */
+      ret = __rt_sigtimedwait ( &u.dummy_sigset, NULL, NULL, sizeof(u.kernel_sigset));
+      if (ret >= 0)
+        break;
+
+      if (errno != EAGAIN && errno != EINTR)
+        return errno;
+    }
+
+    *sig = ret;
+    return 0;
+}
+
diff --git a/libc/unistd/sleep.c b/libc/unistd/sleep.c
new file mode 100644
index 0000000..aafbd60
--- /dev/null
+++ b/libc/unistd/sleep.c
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <time.h>
+#include <errno.h>
+
+unsigned int sleep(unsigned int seconds)
+{
+    struct timespec  t;
+
+   /* seconds is unsigned, while t.tv_sec is signed
+    * some people want to do sleep(UINT_MAX), so fake
+    * support for it by only sleeping 2 billion seconds
+    */
+    if ((int)seconds < 0)
+        seconds = 0x7fffffff;
+        
+    t.tv_sec  = seconds;
+    t.tv_nsec = 0;
+
+    if ( !nanosleep( &t, &t ) )
+    return 0;
+
+    if ( errno == EINTR )
+        return t.tv_sec;
+
+    return -1;
+}
diff --git a/libc/unistd/socketcalls.c b/libc/unistd/socketcalls.c
new file mode 100644
index 0000000..d97abc2
--- /dev/null
+++ b/libc/unistd/socketcalls.c
@@ -0,0 +1,259 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <unistd.h>
+#include <sys/socket.h>
+#include <sys/linux-syscalls.h>
+
+enum
+{
+    SYS_SOCKET = 1,
+    SYS_BIND,
+    SYS_CONNECT,
+    SYS_LISTEN,
+    SYS_ACCEPT,
+    SYS_GETSOCKNAME,
+    SYS_GETPEERNAME,
+    SYS_SOCKETPAIR,
+    SYS_SEND,
+    SYS_RECV,
+    SYS_SENDTO,
+    SYS_RECVFROM,
+    SYS_SHUTDOWN,
+    SYS_SETSOCKOPT,
+    SYS_GETSOCKOPT,
+    SYS_SENDMSG,
+    SYS_RECVMSG
+};
+
+#ifndef __NR_socket
+int socket(int domain, int type, int protocol)
+{
+    unsigned long  t[3];
+
+    t[0] = (unsigned long) domain;
+    t[1] = (unsigned long) type;
+    t[2] = (unsigned long) protocol;
+
+    return (int) __socketcall( SYS_SOCKET, t );
+}
+#endif /* !__NR_socket */
+
+
+#ifndef __NR_bind
+int bind(int sockfd, const struct sockaddr *my_addr, socklen_t addrlen)
+{
+    unsigned long  t[3];
+
+    t[0] = (unsigned long) sockfd;
+    t[1] = (unsigned long) my_addr;
+    t[2] = (unsigned long) addrlen;
+
+    return (int) __socketcall( SYS_BIND, t );
+}
+#endif  /* !__NR_bind */
+
+#ifndef __NR_connect
+int connect(int sockfd, const struct sockaddr *serv_addr, socklen_t  addrlen )
+{
+    unsigned long  t[3];
+
+    t[0] = (unsigned long) sockfd;
+    t[1] = (unsigned long) serv_addr;
+    t[2] = (unsigned long) addrlen;
+
+    return (int) __socketcall( SYS_CONNECT, t );
+}
+#endif /* !__NR_connect */
+
+#ifndef __NR_listen
+int listen(int s, int backlog)
+{
+    unsigned long  t[2];
+
+    t[0] = (unsigned long) s;
+    t[1] = (unsigned long) backlog;
+
+    return (int) __socketcall( SYS_LISTEN, t );
+}
+#endif /* __NR_listen */
+
+#ifndef __NR_accept
+int accept(int sock, struct sockaddr *adresse, socklen_t *longueur)
+{
+    unsigned long  t[3];
+
+    t[0] = (unsigned long) sock;
+    t[1] = (unsigned long) adresse;
+    t[2] = (unsigned long) longueur;
+
+    return (int) __socketcall( SYS_ACCEPT, t );
+}
+#endif /* __NR_accept */
+
+#ifndef __NR_getsockname
+int getsockname(int s, struct sockaddr * name, socklen_t * namelen )
+{
+    unsigned long  t[3];
+
+    t[0] = (unsigned long) s;
+    t[1] = (unsigned long) name;
+    t[2] = (unsigned long) namelen;
+
+    return (int) __socketcall( SYS_GETSOCKNAME, t );
+}
+#endif /* __NR_getsockname */
+
+#ifndef __NR_getpeername
+int getpeername(int s, struct sockaddr *name, socklen_t *namelen)
+{
+    unsigned long  t[3];
+
+    t[0] = (unsigned long) s;
+    t[1] = (unsigned long) name;
+    t[2] = (unsigned long) namelen;
+
+    return (int) __socketcall( SYS_GETPEERNAME, t );
+}
+#endif /* !__NR_getpeername */
+
+#ifndef __NR_socketpair
+int socketpair(int d, int type, int protocol, int sv[2])
+{
+    unsigned long  t[4];
+
+    t[0] = (unsigned long) d;
+    t[1] = (unsigned long) type;
+    t[2] = (unsigned long) protocol;
+    t[3] = (unsigned long) sv;
+
+    return (int) __socketcall( SYS_SOCKETPAIR, t );
+}
+#endif /* __NR_socketpair */
+
+#ifndef __NR_sendto
+ssize_t sendto(int socket, const void *message, size_t length, int flags,
+      const struct sockaddr *dest_addr, socklen_t dest_len)
+{
+    unsigned long  t[6];
+
+    t[0] = (unsigned long) socket;
+    t[1] = (unsigned long) message;
+    t[2] = (unsigned long) length;
+    t[3] = (unsigned long) flags;
+    t[4] = (unsigned long) dest_addr;
+    t[5] = (unsigned long) dest_len;
+
+   return __socketcall( SYS_SENDTO, t );
+}
+#endif /* !__NR_sendto */
+
+#ifndef __NR_recvfrom
+ssize_t recvfrom(int socket, void *buffer, size_t length, unsigned int flags,
+             const struct sockaddr *address, socklen_t *address_len)
+{
+    unsigned long  t[6];
+
+    t[0] = (unsigned long) socket;
+    t[1] = (unsigned long) buffer;
+    t[2] = (unsigned long) length;
+    t[3] = (unsigned long) flags;
+    t[4] = (unsigned long) address;
+    t[5] = (unsigned long) address_len;
+
+   return __socketcall( SYS_RECVFROM, t );
+}
+#endif /* !__NR_recvfrom */
+
+#ifndef __NR_shutdown
+int shutdown(int socket, int how)
+{
+    unsigned long  t[2];
+
+    t[0] = (unsigned long) socket;
+    t[1] = (unsigned long) how;
+
+   return (int) __socketcall( SYS_SHUTDOWN, t );
+}
+#endif /* !__NR_shutdown */
+
+#ifndef __NR_setsockopt
+int  setsockopt( int  s, int  level, int  optname, const void*  optval, socklen_t  optlen )
+{
+    unsigned long  t[5];
+
+    t[0] = (unsigned long) s;
+    t[1] = (unsigned long) level;
+    t[2] = (unsigned long) optname;
+    t[3] = (unsigned long) optval;
+    t[4] = (unsigned long) optlen;
+
+   return (int) __socketcall( SYS_SETSOCKOPT, t );
+}
+#endif /* !__NR_setsockopt */
+
+#ifndef __NR_getsockopt
+int getsockopt(int s, int level, int optname, void *optval, socklen_t *optlen)
+{
+    unsigned long  t[5];
+
+    t[0] = (unsigned long) s;
+    t[1] = (unsigned long) level;
+    t[2] = (unsigned long) optname;
+    t[3] = (unsigned long) optval;
+    t[4] = (unsigned long) optlen;
+
+    return (int) __socketcall( SYS_GETSOCKOPT, t );
+}
+#endif /* !__NR_getsockopt */
+
+#ifndef __NR_sendmsg
+ssize_t sendmsg (int socket, const struct msghdr *message, unsigned int flags)
+{
+    unsigned long  t[3];
+
+    t[0] = (unsigned long) socket;
+    t[1] = (unsigned long) message;
+    t[2] = (unsigned long) flags;
+
+   return __socketcall( SYS_SENDMSG, t );
+}
+#endif /* __NR_sendmsg */
+
+#ifndef __NR_recvmsg
+ssize_t recvmsg(int socket, struct msghdr *message, unsigned int flags)
+{
+    unsigned long  t[3];
+
+    t[0] = (unsigned long) socket;
+    t[1] = (unsigned long) message;
+    t[2] = (unsigned long) flags;
+
+   return __socketcall( SYS_RECVMSG, t );
+}
+#endif /* __NR_recvmsg */
+
diff --git a/libc/unistd/statfs.c b/libc/unistd/statfs.c
new file mode 100644
index 0000000..491ef7a
--- /dev/null
+++ b/libc/unistd/statfs.c
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <sys/vfs.h>
+
+extern int __statfs64(const char *, size_t, struct statfs *);
+
+int statfs(const char*  path, struct statfs*  stat)
+{
+    return __statfs64(path, sizeof(struct statfs), stat);
+}
diff --git a/libc/unistd/strsignal.c b/libc/unistd/strsignal.c
new file mode 100644
index 0000000..171de3d
--- /dev/null
+++ b/libc/unistd/strsignal.c
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <signal.h>
+#include <string.h>
+
+char*
+strsignal(int  sig)
+{
+    if ((unsigned)sig < NSIG)
+        return (char*) sys_siglist[sig];
+    else
+        return "Invalid signal number";
+}
diff --git a/libc/unistd/sysconf.c b/libc/unistd/sysconf.c
new file mode 100644
index 0000000..d3089a4
--- /dev/null
+++ b/libc/unistd/sysconf.c
@@ -0,0 +1,434 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <unistd.h>
+#include <sys/sysconf.h>
+#include <limits.h>
+#include <bionic_tls.h>
+#include <asm/page.h>
+#include <stdio.h>  /* for FOPEN_MAX */
+#include <errno.h>
+#include <fcntl.h>
+#include <string.h>
+#include <ctype.h>
+
+/* seems to be the default on Linux, per the GLibc sources and my own digging */
+
+#define  SYSTEM_CLK_TCK         100
+#define  SYSTEM_IOV_MAX         1024
+#define  SYSTEM_DELAYTIMER_MAX  2147483647
+#define  SYSTEM_MQ_OPEN_MAX     8
+#define  SYSTEM_MQ_PRIO_MAX     32768
+#define  SYSTEM_SEM_NSEMS_MAX   256
+#define  SYSTEM_SEM_VALUE_MAX   (2147483647)
+#define  SYSTEM_SIGQUEUE_MAX    32
+#define  SYSTEM_TIMER_MAX       32
+#define  SYSTEM_LOGIN_NAME_MAX  256
+#define  SYSTEM_TTY_NAME_MAX    32
+
+/* the following depends on our implementation */
+#define  SYSTEM_ATEXIT_MAX          65536    /* our implementation is unlimited */
+#define  SYSTEM_THREAD_KEYS_MAX     BIONIC_TLS_SLOTS
+#define  SYSTEM_THREAD_STACK_MIN    32768    /* lower values may be possible, but be conservative */
+#define  SYSTEM_THREAD_THREADS_MAX  2048     /* really unlimited */
+
+#define  SYSTEM_2_C_BIND     _POSIX_VERSION  /* Posix C binding version */
+#define  SYSTEM_2_C_VER      _POSIX2_C_VERSION
+#define  SYSTEM_2_C_DEV      -1       /* Posix C development tools unsupported on the device */
+#define  SYSTEM_2_FORT_DEV   -1       /* Fortran development unsupported */
+#define  SYSTEM_2_FORT_RUN   -1       /* Fortran runtime unsupported */
+#define  SYSTEM_2_SW_DEV     -1       /* posix software dev utilities unsupported */
+#define  SYSTEM_2_LOCALEDEF  -1       /* localdef() unimplemented */
+#define  SYSTEM_2_UPE        -1       /* No UPE for you ! (User Portability Utilities) */
+#define  SYSTEM_2_VERSION    -1       /* No posix command-line tools */
+
+static int  __get_nproc_conf(void);
+static int  __get_nproc_onln(void);
+static int  __get_phys_pages(void);
+static int  __get_avphys_pages(void);
+
+int
+sysconf( int  name )
+{
+    switch (name) {
+#ifdef _POSIX_ARG_MAX
+    case _SC_ARG_MAX:           return _POSIX_ARG_MAX;
+#endif
+#ifdef _POSIX2_BC_BASE_MAX
+    case _SC_BC_BASE_MAX:       return _POSIX2_BC_BASE_MAX;
+#endif
+#ifdef _POSIX2_BC_DIM_MAX
+    case _SC_BC_DIM_MAX:        return _POSIX2_BC_DIM_MAX;
+#endif
+#ifdef _POSIX2_BC_SCALE_MAX
+    case _SC_BC_SCALE_MAX:      return _POSIX2_BC_SCALE_MAX;
+#endif
+#ifdef _POSIX2_BC_STRING_MAX
+    case _SC_BC_STRING_MAX:     return _POSIX2_BC_STRING_MAX;
+#endif
+    case _SC_CHILD_MAX:         return CHILD_MAX;
+    case _SC_CLK_TCK:           return SYSTEM_CLK_TCK;
+#ifdef _POSIX2_COLL_WEIGHTS_MASK
+    case _SC_COLL_WEIGHTS_MAX:  return _POSIX2_COLL_WEIGHTS_MASK;
+#endif
+#ifdef _POSIX2_EXPR_NEST_MAX
+    case _SC_EXPR_NEXT_MASK:    return _POSIX2_EXPR_NEST_MAX;
+#endif
+#ifdef _POSIX2_LINE_MAX
+    case _SC_LINE_MAX:          return _POSIX2_LINE_MAX;
+#endif
+    case _SC_NGROUPS_MAX:       return NGROUPS_MAX;
+    case _SC_OPEN_MAX:          return OPEN_MAX;
+    //case _SC_PASS_MAX:          return PASS_MAX;
+    case _SC_2_C_BIND:          return SYSTEM_2_C_BIND;
+    case _SC_2_C_DEV:           return SYSTEM_2_C_DEV;
+    case _SC_2_C_VERSION:       return SYSTEM_2_C_VER;
+    //case _SC_2_CHAR_TERM:         return ;
+    case _SC_2_FORT_DEV:        return SYSTEM_2_FORT_DEV;
+    case _SC_2_FORT_RUN:        return SYSTEM_2_FORT_RUN;
+    case _SC_2_LOCALEDEF:       return SYSTEM_2_LOCALEDEF;
+    case _SC_2_SW_DEV:          return SYSTEM_2_SW_DEV;
+    case _SC_2_UPE:             return SYSTEM_2_UPE;
+    case _SC_2_VERSION:         return SYSTEM_2_VERSION;
+#ifdef _POSIX_JOB_CONTROL
+    case _SC_JOB_CONTROL:       return _POSIX_JOB_CONTROL;
+#endif
+#ifdef _POSIX_SAVED_IDS
+    case _SC_SAVED_IDS:         return _POSIX_SAVED_IDS;
+#endif
+#ifdef _POSIX_VERSION
+    case _SC_VERSION:           return _POSIX_VERSION;
+#endif
+    //case _SC_RE_DUP_<AX:        return ;
+    case _SC_STREAM_MAX:        return FOPEN_MAX;
+    //case _SC_TZNAME_MAX:        return ;
+#if _XOPEN_CRYPT
+    case _SC_XOPEN_CRYPT:       return _XOPEN_CRYPT;
+#endif
+#ifdef _XOPEN_ENH_I18N
+    case _SC_XOPEN_ENH_I18N:    return _XOPEN_ENH_I18N;
+#endif
+#ifdef _XOPEN_SHM
+    case _SC_XOPEN_SHM:         return _XOPEN_SHM;
+#endif
+#ifdef _XOPEN_VERSION
+    case _SC_XOPEN_VERSION:     return _XOPEN_VERSION;
+#endif
+#ifdef _XOPEN_XCU_VERSION
+    case _SC_XOPEN_XCU_VERSION: return _XOPEN_XCU_VERSION;
+#endif
+#ifdef _XOPEN_REALTIME
+    case _SC_XOPEN_REALTIME:    return _XOPEN_REALTIME;
+#endif
+#ifdef _XOPEN_REALTIME_THREADS
+    case _SC_XOPEN_REALTIME_THREADS: return _XOPEN_REALTIME_THREADS;
+#endif
+#ifdef _XOPEN_LEGACY
+    case _SC_XOPEN_LEGACY:      return _XOPEN_LEGACY;
+#endif
+    case _SC_ATEXIT_MAX:        return SYSTEM_ATEXIT_MAX;
+    case _SC_IOV_MAX:           return SYSTEM_IOV_MAX;
+    case _SC_PAGESIZE:          return PAGE_SIZE;
+    case _SC_PAGE_SIZE:         return PAGE_SIZE;
+#ifdef _XOPEN_UNIX
+    case _SC_XOPEN_UNIX:        return _XOPEN_UNIX;
+#endif
+
+    // XXX: TODO: XBS5 nonsense
+
+#ifdef AIO_LISTIO_MAX
+    case _SC_AIO_LISTIO_MAX:       return AIO_LISTIO_MAX;
+#endif
+#ifdef AIO_MAX
+    case _SC_AIO_MAX:              return AIO_MAX;
+#endif
+#ifdef AIO_PRIO_DELTA_MAX
+    case _SC_AIO_PRIO_DELTA_MAX:   return AIO_PRIO_DELTA_MAX;
+#endif
+    case _SC_DELAYTIMER_MAX:    return SYSTEM_DELAYTIMER_MAX;
+    case _SC_MQ_OPEN_MAX:       return SYSTEM_MQ_OPEN_MAX;
+    case _SC_MQ_PRIO_MAX:       return SYSTEM_MQ_PRIO_MAX;
+    case _SC_RTSIG_MAX:         return RTSIG_MAX;
+    case _SC_SEM_NSEMS_MAX:     return SYSTEM_SEM_NSEMS_MAX;
+    case _SC_SEM_VALUE_MAX:     return SYSTEM_SEM_VALUE_MAX;
+    case _SC_SIGQUEUE_MAX:      return SYSTEM_SIGQUEUE_MAX;
+    case _SC_TIMER_MAX:         return SYSTEM_TIMER_MAX;
+#ifdef _POSIX_ASYNCHRONOUS_IO
+    case _SC_ASYNCHRONOUS_IO:   return _POSIX_ASYNCHRONOUS_IO;
+#endif
+#ifdef _POSIX_FSYNC
+    case _SC_FSYNC:             return _POSIX_FSYNC;
+#endif
+#ifdef _POSIX_MAPPED_FILES
+    case _SC_MAPPED_FILES:      return _POSIX_MAPPED_FILES;
+#endif
+#ifdef _POSIX_MEMLOCK
+    case _SC_MEMLOCK:           return _POSIX_MEMLOCK;
+#endif
+#ifdef _POSIX_MEMLOCK_RANGE
+    case _SC_MEMLOCK_RANGE:     return _POSIX_MEMLOCK_RANGE
+#endif
+#ifdef _POSIX_MEMORY_PROTECTION
+    case _SC_MEMORY_PROTECTION: return _POSIX_MEMORY_PROTECTION;
+#endif
+#ifdef _POSIX_MESSAGE_PASSING
+    case _SC_MESSAGE_PASSING:   return _POSIX_MESSAGE_PASSING;
+#endif
+#ifdef _POSIX_PRIORITIZED_IO
+    case _SC_PRIORITIZED_IO:    return _POSIX_PRIORITIZED_IO;
+#endif
+#ifdef _POSIX_PRIORITY_SCHEDULING
+    case _SC_PRIORITY_SCHEDULING:  return _POSIX_PRIORITY_SCHEDULING;
+#endif
+#ifdef _POSIX_REALTIME_SIGNALS
+    case _SC_REALTIME_SIGNALS:  return _POSIX_REALTIME_SIGNALS;
+#endif
+#ifdef _POSIX_SEMAPHORES
+    case _SC_SEMAPHORES:        return _POSIX_SEMAPHORES;
+#endif
+#ifdef _POSIX_SHARED_MEMORY_OBJECTS
+    case _SC_SHARED_MEMORY_OBJECTS:  return _POSIX_SHARED_MEMORY_OBJECTS;
+#endif
+#ifdef _POSIX_SYNCHRONIZED_IO
+    case _SC_SYNCHRONIZED_IO:   return _POSIX_SYNCHRONIZED_IO;
+#endif
+#ifdef _POSIX_TIMERS
+    case _SC_TIMERS:            return _POSIX_TIMERS;
+#endif
+
+    // GETGR_R_SIZE_MAX ?
+    // GETPW_R_SIZE_MAX ?
+
+    case _SC_LOGIN_NAME_MAX:    return SYSTEM_LOGIN_NAME_MAX;
+#ifdef _POSIX_THREAD_DESTRUCTOR_ITERATIONS
+    case _SC_THREAD_DESTRUCTOR_ITERATIONS:  return _POSIX_THREAD_DESTRUCTOR_ITERATIONS;
+#endif
+    case _SC_THREAD_KEYS_MAX:     return SYSTEM_THREAD_KEYS_MAX;
+    case _SC_THREAD_STACK_MIN:    return SYSTEM_THREAD_STACK_MIN;
+    case _SC_THREAD_THREADS_MAX:  return SYSTEM_THREAD_THREADS_MAX;
+    case _SC_TTY_NAME_MAX:        return SYSTEM_TTY_NAME_MAX;
+#ifdef _POSIX_THREADS
+    case _SC_THREADS:             return _POSIX_THREADS;
+#endif
+#ifdef _POSIX_THREAD_ATTR_STACKADDR
+    case _SC_THREAD_ATTR_STACKADDR:   return _POSIX_THREAD_ATTR_STACKADDR;
+#endif
+#ifdef _POSIX_THREAD_ATTR_STACKSIZE
+    case _SC_THREAD_ATTR_STACKSIZE:   return _POSIX_THREAD_ATTR_STACKSIZE;
+#endif
+#ifdef _POSIX_THREAD_PRIORITY_SCHEDULING
+    case _SC_THREAD_PRIORITY_SCHEDULING:  return _POSIX_THREAD_PRIORITY_SCHEDULING;
+#endif
+#ifdef _POSIX_THREAD_PRIO_INHERIT
+    case _SC_THREAD_PRIO_INHERIT:         return _POSIX_THREAD_PRIO_INHERIT;
+#endif
+#ifdef _POSIX_THREAD_PRIO_PROTECT
+    case _SC_THREAD_PRIO_PROTECT: return _POSIX_THREAD_PRIO_PROTECT;
+#endif
+#ifdef _POSIX_THREAD_SAFE_FUNCTIONS
+    case _SC_THREAD_SAFE_FUNCTIONS:  return _POSIX_THREAD_SAFE_FUNCTIONS
+#endif
+
+
+    case _SC_NPROCESSORS_CONF:  return __get_nproc_conf();
+    case _SC_NPROCESSORS_ONLN:  return __get_nproc_onln();
+    case _SC_PHYS_PAGES:        return __get_phys_pages();
+    case _SC_AVPHYS_PAGES:      return __get_avphys_pages();
+
+    default:
+       /* Posix says EINVAL is the only error that shall be returned,
+        * but GLibc uses ENOSYS */
+        errno = ENOSYS;
+        return -1;
+    }
+}
+
+
+typedef struct {
+    int   rpos;
+    int   len;
+    int   overflow;
+    int   fd;
+    int   in_len;
+    int   in_pos;
+    char  buff[128];
+    char  input[128];
+} LineParser;
+
+static int
+line_parser_init( LineParser*  p, const char*  path )
+{
+    p->rpos     = 0;
+    p->len      = (int)sizeof(p->buff);
+    p->overflow = 0;
+
+    p->in_len   = 0;
+    p->in_pos   = 0;
+    p->fd       = open( path, O_RDONLY );
+
+    return p->fd;
+}
+
+
+static int
+line_parser_addc( LineParser*  p, int  c )
+{
+    if (p->overflow) {
+        p->overflow = (c == '\n');
+        return 0;
+    }
+    if (p->rpos >= p->len) {
+        p->overflow = 1;
+        return 0;
+    }
+    if (c == '\n') {
+        p->buff[p->rpos] = 0;
+        p->rpos = 0;
+        return 1;
+    }
+    p->buff[p->rpos++] = (char) c;
+    return 0;
+}
+
+static int
+line_parser_getc( LineParser*  p )
+{
+    if (p->in_len >= p->in_pos) {
+        int  ret;
+
+        p->in_len = p->in_pos = 0;
+        do {
+            ret = read(p->fd, p->input, sizeof(p->input));
+        } while (ret < 0 && errno == EINTR);
+
+        if (ret <= 0)
+            return -1;
+
+        p->in_len = ret;
+    }
+    return p->input[ p->in_pos++ ];
+}
+
+static const char*
+line_parser_gets( LineParser*  p )
+{
+    for (;;) {
+        for (;;) {
+            int  c = line_parser_getc(p);
+
+            if (c < 0) {
+                close(p->fd);
+                p->fd = -1;
+                return NULL;
+             }
+             if (line_parser_addc(p, c))
+                return p->buff;
+        }
+    }
+}
+
+static void
+line_parser_done( LineParser* p )
+{
+    if (p->fd >= 0) {
+        close(p->fd);
+        p->fd = -1;
+    }
+}
+
+static int
+__get_nproc_conf(void)
+{
+    LineParser   parser[1];
+    const char*  p;
+    int          count = 0;
+
+    if (line_parser_init(parser, "/proc/cpuinfo") < 0)
+        return 1;
+
+    while ((p = line_parser_gets(parser))) {
+        if ( !memcmp(p, "processor", 9) )
+            count += 1;
+    }
+    return (count < 1) ? 1 : count;
+}
+
+
+static int
+__get_nproc_onln(void)
+{
+    LineParser   parser[1];
+    const char*  p;
+    int          count = 0;
+
+    if (line_parser_init(parser, "/proc/stat") < 0)
+        return 1;
+
+    while ((p = line_parser_gets(parser))) {
+        if ( !memcmp(p, "cpu", 3) && isdigit(p[3]) )
+            count += 1;
+    }
+    return (count < 1) ? 1 : count;
+}
+
+static int
+__get_phys_pages(void)
+{
+    LineParser   parser[1];
+    const char*  p;
+
+    if (line_parser_init(parser, "/proc/meminfo") < 0)
+        return -2;  /* what ? */
+
+    while ((p = line_parser_gets(parser))) {
+        long  total;
+        if ( sscanf(p, "MemTotal: %ld kB", &total) == 1 ) {
+            line_parser_done(parser);
+            return (int) (total / (PAGE_SIZE/1024));
+        }
+    }
+    return -3;
+}
+
+static int
+__get_avphys_pages(void)
+{
+    LineParser   parser[1];
+    const char*  p;
+
+    if (line_parser_init(parser, "/proc/meminfo") < 0)
+        return -1;  /* what ? */
+
+    while ((p = line_parser_gets(parser))) {
+        long  total;
+        if ( sscanf(p, "MemFree: %ld kB", &total) == 1 ) {
+            line_parser_done(parser);
+            return (int) (total / (PAGE_SIZE/1024));
+        }
+    }
+    return -1;
+}
diff --git a/libc/unistd/syslog.c b/libc/unistd/syslog.c
new file mode 100644
index 0000000..3571d59
--- /dev/null
+++ b/libc/unistd/syslog.c
@@ -0,0 +1,368 @@
+/*	$OpenBSD: syslog.c,v 1.28 2005/08/08 08:05:34 espie Exp $ */
+/*
+ * Copyright (c) 1983, 1988, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/uio.h>
+#include <syslog.h>
+#include <sys/un.h>
+#include <netdb.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <paths.h>
+#include <stdio.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+#include <stdarg.h>
+
+static struct syslog_data sdata = SYSLOG_DATA_INIT;
+
+extern char	*__progname;		/* Program name, from crt0. */
+
+static void	disconnectlog_r(struct syslog_data *);	/* disconnect from syslogd */
+static void	connectlog_r(struct syslog_data *);	/* (re)connect to syslogd */
+
+/*
+ * syslog, vsyslog --
+ *	print message on log file; output is intended for syslogd(8).
+ */
+void
+syslog(int pri, const char *fmt, ...)
+{
+	va_list ap;
+
+	va_start(ap, fmt);
+	vsyslog(pri, fmt, ap);
+	va_end(ap);
+}
+
+void
+vsyslog(int pri, const char *fmt, va_list ap)
+{
+	vsyslog_r(pri, &sdata, fmt, ap);
+}
+
+void
+openlog(const char *ident, int logstat, int logfac)
+{
+	openlog_r(ident, logstat, logfac, &sdata);
+}
+
+void
+closelog(void)
+{
+	closelog_r(&sdata);
+}
+
+/* setlogmask -- set the log mask level */
+int
+setlogmask(int pmask)
+{
+	return setlogmask_r(pmask, &sdata);
+}
+
+/* Reentrant version of syslog, i.e. syslog_r() */
+
+void
+syslog_r(int pri, struct syslog_data *data, const char *fmt, ...)
+{
+	va_list ap;
+
+	va_start(ap, fmt);
+	vsyslog_r(pri, data, fmt, ap);
+	va_end(ap);
+}
+
+void
+vsyslog_r(int pri, struct syslog_data *data, const char *fmt, va_list ap)
+{
+	int cnt;
+	char ch, *p, *t;
+	time_t now;
+	int fd, saved_errno, error;
+#define	TBUF_LEN	2048
+#define	FMT_LEN		1024
+	char *stdp = NULL, tbuf[TBUF_LEN], fmt_cpy[FMT_LEN];
+	int tbuf_left, fmt_left, prlen;
+
+#define	INTERNALLOG	LOG_ERR|LOG_CONS|LOG_PERROR|LOG_PID
+	/* Check for invalid bits. */
+	if (pri & ~(LOG_PRIMASK|LOG_FACMASK)) {
+		if (data == &sdata) {
+			syslog(INTERNALLOG,
+			    "syslog: unknown facility/priority: %x", pri);
+		} else {
+			syslog_r(INTERNALLOG, data,
+			    "syslog_r: unknown facility/priority: %x", pri);
+		}
+		pri &= LOG_PRIMASK|LOG_FACMASK;
+	}
+
+	/* Check priority against setlogmask values. */
+	if (!(LOG_MASK(LOG_PRI(pri)) & data->log_mask))
+		return;
+
+	saved_errno = errno;
+
+	/* Set default facility if none specified. */
+	if ((pri & LOG_FACMASK) == 0)
+		pri |= data->log_fac;
+
+	/* If we have been called through syslog(), no need for reentrancy. */
+	if (data == &sdata)
+		(void)time(&now);
+
+	p = tbuf;
+	tbuf_left = TBUF_LEN;
+
+#define	DEC()	\
+	do {					\
+		if (prlen < 0)			\
+			prlen = 0;		\
+		if (prlen >= tbuf_left)		\
+			prlen = tbuf_left - 1;	\
+		p += prlen;			\
+		tbuf_left -= prlen;		\
+	} while (0)
+
+	prlen = snprintf(p, tbuf_left, "<%d>", pri);
+	DEC();
+
+	/* 
+	 * syslogd will expand time automagically for reentrant case, and
+	 * for normal case, just do like before
+	 */
+	if (data == &sdata) {
+		prlen = strftime(p, tbuf_left, "%h %e %T ", localtime(&now));
+		DEC();
+	}
+
+	if (data->log_stat & LOG_PERROR)
+		stdp = p;
+	if (data->log_tag == NULL)
+		data->log_tag = __progname;
+	if (data->log_tag != NULL) {
+		prlen = snprintf(p, tbuf_left, "%s", data->log_tag);
+		DEC();
+	}
+	if (data->log_stat & LOG_PID) {
+		prlen = snprintf(p, tbuf_left, "[%ld]", (long)getpid());
+		DEC();
+	}
+	if (data->log_tag != NULL) {
+		if (tbuf_left > 1) {
+			*p++ = ':';
+			tbuf_left--;
+		}
+		if (tbuf_left > 1) {
+			*p++ = ' ';
+			tbuf_left--;
+		}
+	}
+
+	/* strerror() is not reentrant */
+
+	for (t = fmt_cpy, fmt_left = FMT_LEN; (ch = *fmt); ++fmt) {
+		if (ch == '%' && fmt[1] == 'm') {
+			++fmt;
+			if (data == &sdata) {
+				prlen = snprintf(t, fmt_left, "%s",
+				    strerror(saved_errno)); 
+			} else {
+				prlen = snprintf(t, fmt_left, "Error %d",
+				    saved_errno); 
+			}
+			if (prlen < 0)
+				prlen = 0;
+			if (prlen >= fmt_left)
+				prlen = fmt_left - 1;
+			t += prlen;
+			fmt_left -= prlen;
+		} else if (ch == '%' && fmt[1] == '%' && fmt_left > 2) {
+			*t++ = '%';
+			*t++ = '%';
+			fmt++;
+			fmt_left -= 2;
+		} else {
+			if (fmt_left > 1) {
+				*t++ = ch;
+				fmt_left--;
+			}
+		}
+	}
+	*t = '\0';
+
+	prlen = vsnprintf(p, tbuf_left, fmt_cpy, ap);
+	DEC();
+	cnt = p - tbuf;
+
+	/* Output to stderr if requested. */
+	if (data->log_stat & LOG_PERROR) {
+		struct iovec iov[2];
+
+		iov[0].iov_base = stdp;
+		iov[0].iov_len = cnt - (stdp - tbuf);
+		iov[1].iov_base = "\n";
+		iov[1].iov_len = 1;
+		(void)writev(STDERR_FILENO, iov, 2);
+	}
+
+	/* Get connected, output the message to the local logger. */
+	if (!data->opened)
+		openlog_r(data->log_tag, data->log_stat, 0, data);
+	connectlog_r(data);
+
+	/*
+	 * If the send() failed, there are two likely scenarios:
+	 *  1) syslogd was restarted
+	 *  2) /dev/log is out of socket buffer space
+	 * We attempt to reconnect to /dev/log to take care of
+	 * case #1 and keep send()ing data to cover case #2
+	 * to give syslogd a chance to empty its socket buffer.
+	 */
+	if ((error = send(data->log_file, tbuf, cnt, 0)) < 0) {
+		if (errno != ENOBUFS) {
+			disconnectlog_r(data);
+			connectlog_r(data);
+		}
+		do {
+			usleep(1);
+			if ((error = send(data->log_file, tbuf, cnt, 0)) >= 0)
+				break;
+		} while (errno == ENOBUFS);
+	}
+
+	/*
+	 * Output the message to the console; try not to block
+	 * as a blocking console should not stop other processes.
+	 * Make sure the error reported is the one from the syslogd failure.
+	 */
+	if (error == -1 && (data->log_stat & LOG_CONS) &&
+	    (fd = open(_PATH_CONSOLE, O_WRONLY|O_NONBLOCK, 0)) >= 0) {
+		struct iovec iov[2];
+		
+		p = strchr(tbuf, '>') + 1;
+		iov[0].iov_base = p;
+		iov[0].iov_len = cnt - (p - tbuf);
+		iov[1].iov_base = "\r\n";
+		iov[1].iov_len = 2;
+		(void)writev(fd, iov, 2);
+		(void)close(fd);
+	}
+
+	if (data != &sdata)
+		closelog_r(data);
+}
+
+static void
+disconnectlog_r(struct syslog_data *data)
+{
+	/*
+	 * If the user closed the FD and opened another in the same slot,
+	 * that's their problem.  They should close it before calling on
+	 * system services.
+	 */
+	if (data->log_file != -1) {
+		close(data->log_file);
+		data->log_file = -1;
+	}
+	data->connected = 0;		/* retry connect */
+}
+
+static void
+connectlog_r(struct syslog_data *data)
+{
+    union {
+        struct sockaddr     syslogAddr;
+        struct sockaddr_un  syslogAddrUn;
+    } u;
+
+#define SyslogAddr   u.syslogAddrUn
+
+	if (data->log_file == -1) {
+		if ((data->log_file = socket(AF_UNIX, SOCK_DGRAM, 0)) == -1)
+			return;
+		(void)fcntl(data->log_file, F_SETFD, 1);
+	}
+	if (data->log_file != -1 && !data->connected) {
+		memset(&SyslogAddr, '\0', sizeof(SyslogAddr));
+#if 0
+                /* BIONIC: no sun_len field to fill on Linux */
+		SyslogAddr.sun_len = sizeof(SyslogAddr);
+#endif
+		SyslogAddr.sun_family = AF_UNIX;
+		strlcpy(SyslogAddr.sun_path, _PATH_LOG,
+		    sizeof(SyslogAddr.sun_path));
+		if (connect(data->log_file, &u.syslogAddr,
+		    sizeof(SyslogAddr)) == -1) {
+			(void)close(data->log_file);
+			data->log_file = -1;
+		} else
+			data->connected = 1;
+	}
+}
+
+void
+openlog_r(const char *ident, int logstat, int logfac, struct syslog_data *data)
+{
+	if (ident != NULL)
+		data->log_tag = ident;
+	data->log_stat = logstat;
+	if (logfac != 0 && (logfac &~ LOG_FACMASK) == 0)
+		data->log_fac = logfac;
+
+	if (data->log_stat & LOG_NDELAY)	/* open immediately */
+		connectlog_r(data);
+
+	data->opened = 1;	/* ident and facility has been set */
+}
+
+void
+closelog_r(struct syslog_data *data)
+{
+	(void)close(data->log_file);
+	data->log_file = -1;
+	data->connected = 0;
+	data->log_tag = NULL;
+}
+
+/* setlogmask -- set the log mask level */
+int
+setlogmask_r(int pmask, struct syslog_data *data)
+{
+	int omask;
+
+	omask = data->log_mask;
+	if (pmask != 0)
+		data->log_mask = pmask;
+	return (omask);
+}
diff --git a/libc/unistd/system.c b/libc/unistd/system.c
new file mode 100644
index 0000000..72cc37e
--- /dev/null
+++ b/libc/unistd/system.c
@@ -0,0 +1,74 @@
+/*	$OpenBSD: system.c,v 1.8 2005/08/08 08:05:37 espie Exp $ */
+/*
+ * Copyright (c) 1988 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/types.h>
+#include <signal.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <paths.h>
+#include <sys/wait.h>
+
+extern char **environ;
+
+int
+system(const char *command)
+{
+  pid_t pid;
+	sig_t intsave, quitsave;
+	sigset_t mask, omask;
+	int pstat;
+	char *argp[] = {"sh", "-c", NULL, NULL};
+
+	if (!command)		/* just checking... */
+		return(1);
+
+	argp[2] = (char *)command;
+
+	sigemptyset(&mask);
+	sigaddset(&mask, SIGCHLD);
+	sigprocmask(SIG_BLOCK, &mask, &omask);
+	switch (pid = vfork()) {
+	case -1:			/* error */
+		sigprocmask(SIG_SETMASK, &omask, NULL);
+		return(-1);
+	case 0:				/* child */
+		sigprocmask(SIG_SETMASK, &omask, NULL);
+		execve(_PATH_BSHELL, argp, environ);
+    _exit(127);
+  }
+
+	intsave = (sig_t)  bsd_signal(SIGINT, SIG_IGN);
+	quitsave = (sig_t) bsd_signal(SIGQUIT, SIG_IGN);
+	pid = waitpid(pid, (int *)&pstat, 0);
+	sigprocmask(SIG_SETMASK, &omask, NULL);
+	(void)bsd_signal(SIGINT, intsave);
+	(void)bsd_signal(SIGQUIT, quitsave);
+	return (pid == -1 ? -1 : pstat);
+}
diff --git a/libc/unistd/tcgetpgrp.c b/libc/unistd/tcgetpgrp.c
new file mode 100644
index 0000000..4355014
--- /dev/null
+++ b/libc/unistd/tcgetpgrp.c
@@ -0,0 +1,34 @@
+/* bionic/unistd/tcgetpgrp.c
+**
+** Copyright 2006, The Android Open Source Project
+**
+** Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are met:
+**     * Redistributions of source code must retain the above copyright
+**       notice, this list of conditions and the following disclaimer.
+**     * Redistributions in binary form must reproduce the above copyright
+**       notice, this list of conditions and the following disclaimer in the
+**       documentation and/or other materials provided with the distribution.
+**     * Neither the name of Google Inc. nor the names of its contributors may
+**       be used to endorse or promote products derived from this software
+**       without specific prior written permission.
+**
+** THIS SOFTWARE IS PROVIDED BY Google Inc. ``AS IS'' AND ANY EXPRESS OR
+** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+** MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+** EVENT SHALL Google Inc. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+** PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+** OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+** WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+** OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+** ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+#include <unistd.h>
+#include <termios.h>
+
+pid_t tcgetpgrp(int fd)
+{
+    pid_t _pid;
+    return ioctl(fd, TIOCGPGRP, &_pid) ? (pid_t)-1 : _pid;
+}
diff --git a/libc/unistd/tcsetpgrp.c b/libc/unistd/tcsetpgrp.c
new file mode 100644
index 0000000..b83b997
--- /dev/null
+++ b/libc/unistd/tcsetpgrp.c
@@ -0,0 +1,33 @@
+/* bionic/unistd/tcsetpgrp.c
+**
+** Copyright 2006, The Android Open Source Project
+**
+** Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are met:
+**     * Redistributions of source code must retain the above copyright
+**       notice, this list of conditions and the following disclaimer.
+**     * Redistributions in binary form must reproduce the above copyright
+**       notice, this list of conditions and the following disclaimer in the
+**       documentation and/or other materials provided with the distribution.
+**     * Neither the name of Google Inc. nor the names of its contributors may
+**       be used to endorse or promote products derived from this software
+**       without specific prior written permission.
+**
+** THIS SOFTWARE IS PROVIDED BY Google Inc. ``AS IS'' AND ANY EXPRESS OR
+** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+** MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+** EVENT SHALL Google Inc. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+** PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+** OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+** WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+** OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+** ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+#include <unistd.h>
+#include <termios.h>
+
+int tcsetpgrp(int fd, pid_t _pid)
+{
+    return ioctl(fd, TIOCSPGRP, &_pid);
+}
diff --git a/libc/unistd/time.c b/libc/unistd/time.c
new file mode 100644
index 0000000..13d7366
--- /dev/null
+++ b/libc/unistd/time.c
@@ -0,0 +1,62 @@
+/*	$OpenBSD: time.c,v 1.5 2005/08/08 08:05:34 espie Exp $ */
+/*
+ * Copyright (c) 1983, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <time.h>
+
+time_t
+time(time_t *t)
+{
+	struct timeval tt;
+
+	if (gettimeofday(&tt, (struct timezone *)0) < 0)
+		return (-1);
+	if (t)
+		*t = (time_t)tt.tv_sec;
+	return (tt.tv_sec);
+}
+
+
+clock_t
+clock(void)
+{
+	struct timespec  tm;
+	static int       clock_inited;
+	static clock_t   clock_start;
+	clock_t          now;
+
+	clock_gettime( CLOCK_MONOTONIC, &tm);
+	now = tm.tv_sec * CLOCKS_PER_SEC + (tm.tv_nsec * (CLOCKS_PER_SEC/1e9));
+
+	if (!clock_inited) {
+		clock_start  = now;
+		clock_inited = 1;
+	}
+	return  now - clock_start;
+}
diff --git a/libc/unistd/umount.c b/libc/unistd/umount.c
new file mode 100644
index 0000000..642e42c
--- /dev/null
+++ b/libc/unistd/umount.c
@@ -0,0 +1,35 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <unistd.h>
+
+extern int  umount2(const char*, int);
+
+int  umount(const char*  dir)
+{
+  return umount2(dir, 0);
+}
diff --git a/libc/unistd/unlockpt.c b/libc/unistd/unlockpt.c
new file mode 100644
index 0000000..998b7a3
--- /dev/null
+++ b/libc/unistd/unlockpt.c
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <unistd.h>
+#include <sys/ioctl.h>
+
+int  unlockpt( int  fd )
+{
+    int  unlock = 0;
+
+    return ioctl( fd, TIOCSPTLCK, &unlock );
+}
diff --git a/libc/unistd/usleep.c b/libc/unistd/usleep.c
new file mode 100644
index 0000000..75458b1
--- /dev/null
+++ b/libc/unistd/usleep.c
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <time.h>
+#include <errno.h>
+
+void usleep(unsigned long usec)
+{
+  struct timespec ts;
+
+  ts.tv_sec  = usec/1000000UL;
+
+#ifdef __arm__
+    /* avoid divisions and modulos on the ARM */
+  ts.tv_nsec = (usec - ts.tv_sec*1000000UL)*1000;
+#else
+  ts.tv_nsec = (usec % 1000000UL) * 1000UL;
+#endif
+
+  for (;;)
+  {
+    if ( nanosleep( &ts, &ts ) >= 0 )
+        break;
+
+    if ( errno != EINTR )
+        break;
+  }
+}
diff --git a/libc/unistd/wait.c b/libc/unistd/wait.c
new file mode 100644
index 0000000..d172419
--- /dev/null
+++ b/libc/unistd/wait.c
@@ -0,0 +1,46 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+#include <sys/wait.h>
+#include <stddef.h>
+
+extern pid_t  __wait4 (pid_t pid, int *status, int options, struct rusage *rusage);
+
+pid_t  wait( int*  status )
+{
+    return __wait4( (pid_t)-1, status, 0, NULL );
+}
+
+pid_t  wait3(int*  status, int options, struct rusage*  rusage)
+{
+    return __wait4( (pid_t)-1, status, options, rusage );
+}
+
+pid_t  waitpid(pid_t  pid, int*  status, int  options)
+{
+    return __wait4( pid, status, options, NULL );
+}