Index: uspace/lib/posix/Makefile
===================================================================
--- uspace/lib/posix/Makefile	(revision 965c250a8edf771e49d0de40e99f0ade39dd486e)
+++ uspace/lib/posix/Makefile	(revision 7bb9b531debd374656fdcde9a8aca79531cba23b)
@@ -39,4 +39,5 @@
 
 SOURCES = \
+	string.c
 
 include $(USPACE_PREFIX)/Makefile.common
Index: uspace/lib/posix/string.c
===================================================================
--- uspace/lib/posix/string.c	(revision 7bb9b531debd374656fdcde9a8aca79531cba23b)
+++ uspace/lib/posix/string.c	(revision 7bb9b531debd374656fdcde9a8aca79531cba23b)
@@ -0,0 +1,353 @@
+/*
+ * Copyright (c) 2011 Petr Koupy
+ * Copyright (c) 2011 Jiri Zarevucky
+ * 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.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+ */
+
+/** @addtogroup libposix
+ * @{
+ */
+/** @file
+ */
+
+#include "string.h"
+
+#include <libc/assert.h>
+
+#include <str_error.h>
+
+#undef strcpy
+#undef strncpy
+#undef strcat
+#undef strncat
+#undef mempcpy
+#undef strdup
+
+#undef memcmp
+#undef strcmp
+#undef strncmp
+#undef strcasecmp
+#undef strncasecmp
+
+#undef memchr
+#undef rawmemchr
+#undef strchr
+#undef strrchr
+#undef strpbrk
+#undef strcspn
+#undef strspn
+#undef strstr
+
+#undef strcoll
+#undef strxfrm
+
+#undef strerror
+
+#undef strlen
+
+/**
+ *
+ * @param dest
+ * @param src
+ * @return
+ */
+char *posix_strcpy(char *dest, const char *src)
+{
+	// TODO
+	return 0;
+}
+
+/**
+ *
+ * @param dest
+ * @param src
+ * @param n
+ * @return
+ */
+char *posix_strncpy(char *dest, const char *src, size_t n)
+{
+	// TODO
+	return 0;
+}
+
+/**
+ *
+ * @param dest
+ * @param src
+ * @return
+ */
+char *posix_strcat(char *dest, const char *src)
+{
+	// TODO
+	return 0;
+}
+
+/**
+ *
+ * @param dest
+ * @param src
+ * @param n
+ * @return
+ */
+char *posix_strncat(char *dest, const char *src, size_t n)
+{
+	// TODO
+	return 0;
+}
+
+/**
+ * 
+ * @param dest
+ * @param src
+ * @param n
+ * @return
+ */
+void *posix_mempcpy(void *dest, const void *src, size_t n)
+{
+	// TODO
+	return 0;
+}
+
+/**
+ * 
+ * @param s
+ * @return
+ */
+char *posix_strdup(const char *s)
+{
+	// TODO
+	return 0;
+}
+
+/**
+ *
+ * @param mem1
+ * @param mem2
+ * @param n
+ * @return
+ */
+int posix_memcmp(const void *mem1, const void *mem2, size_t n)
+{
+	// TODO
+	return 0;
+}
+
+/**
+ *
+ * @param s1
+ * @param s2
+ * @return
+ */
+int posix_strcmp(const char *s1, const char *s2)
+{
+	// TODO
+	return 0;
+}
+
+/**
+ *
+ * @param s1
+ * @param s2
+ * @param n
+ * @return
+ */
+int posix_strncmp(const char *s1, const char *s2, size_t n)
+{
+	// TODO
+	return 0;
+}
+
+/**
+ * 
+ * @param s1
+ * @param s2
+ * @return
+ */
+int posix_strcasecmp(const char *s1, const char *s2)
+{
+	// TODO
+	return 0;
+}
+
+/**
+ * 
+ * @param s1
+ * @param s2
+ * @param n
+ * @return
+ */
+int posix_strncasecmp(const char *s1, const char *s2, size_t n)
+{
+	// TODO
+	return 0;
+}
+
+/**
+ *
+ * @param mem
+ * @param c
+ * @param n
+ * @return
+ */
+void *posix_memchr(const void *mem, int c, size_t n)
+{
+	// TODO
+	return 0;
+}
+
+/**
+ * 
+ * @param mem
+ * @param c
+ * @return
+ */
+void *posix_rawmemchr(const void *mem, int c)
+{
+	// TODO
+	return 0;
+}
+
+/**
+ *
+ * @param s
+ * @param c
+ * @return
+ */
+char *posix_strchr(const char *s, int c)
+{
+	// TODO
+	return 0;
+}
+
+/**
+ *
+ * @param s
+ * @param c
+ * @return
+ */
+char *posix_strrchr(const char *s, int c)
+{
+	// TODO
+	return 0;
+}
+
+/**
+ *
+ * @param s1
+ * @param s2
+ * @return
+ */
+char *posix_strpbrk(const char *s1, const char *s2)
+{
+	// TODO
+	return 0;
+}
+
+/**
+ *
+ * @param s1
+ * @param s2
+ * @return
+ */
+size_t posix_strcspn(const char *s1, const char *s2)
+{
+	// TODO
+	return 0;
+}
+
+/**
+ *
+ * @param s1
+ * @param s2
+ * @return
+ */
+size_t posix_strspn(const char *s1, const char *s2)
+{
+	// TODO
+	return 0;
+}
+
+/**
+ *
+ * @param s1
+ * @param s2
+ * @return
+ */
+char *posix_strstr(const char *s1, const char *s2)
+{
+	// TODO
+	return 0;
+}
+
+/**
+ *
+ * @param s1
+ * @param s2
+ * @return
+ */
+int posix_strcoll(const char *s1, const char *s2)
+{
+	// TODO
+	return 0;
+}
+
+/**
+ *
+ * @param s1
+ * @param s2
+ * @param n
+ * @return
+ */
+size_t posix_strxfrm(char *s1, const char *s2, size_t n)
+{
+	// TODO
+	return 0;
+}
+
+/**
+ *
+ * @param errnum
+ * @return
+ */
+char *posix_strerror(int errnum)
+{
+	// TODO
+	return 0;
+}
+
+/**
+ *
+ * @param s
+ * @return
+ */
+size_t posix_strlen(const char *s)
+{
+	// TODO
+	return 0;
+}
+
+/** @}
+ */
Index: uspace/lib/posix/string.h
===================================================================
--- uspace/lib/posix/string.h	(revision 7bb9b531debd374656fdcde9a8aca79531cba23b)
+++ uspace/lib/posix/string.h	(revision 7bb9b531debd374656fdcde9a8aca79531cba23b)
@@ -0,0 +1,113 @@
+/*
+ * Copyright (c) 2011 Petr Koupy
+ * Copyright (c) 2011 Jiri Zarevucky
+ * 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.
+ * - The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+ */
+
+/** @addtogroup libposix
+ * @{
+ */
+/** @file
+ */
+
+#ifndef POSIX_STRING_H_
+#define POSIX_STRING_H_
+
+#include <mem.h>
+#include <str.h>
+
+#ifndef NULL
+	#define NULL  ((void *) 0)
+#endif
+
+/* Copying and Concatenation */
+extern char *posix_strcpy(char *restrict dest, const char *restrict src);
+extern char *posix_strncpy(char *restrict dest, const char *restrict src, size_t n);
+extern char *posix_strcat(char *restrict dest, const char *restrict src);
+extern char *posix_strncat(char *restrict dest, const char *restrict src, size_t n);
+extern void *posix_mempcpy(void *restrict dest, const void *restrict src, size_t n);
+extern char *posix_strdup(const char *s);
+
+/* String/Array Comparison */
+extern int posix_memcmp(const void *mem1, const void *mem2, size_t n);
+extern int posix_strcmp(const char *s1, const char *s2);
+extern int posix_strncmp(const char *s1, const char *s2, size_t n);
+extern int posix_strcasecmp(const char *s1, const char *s2);
+extern int posix_strncasecmp(const char *s1, const char *s2, size_t n);
+
+/* Search Functions */
+extern void *posix_memchr(const void *mem, int c, size_t n);
+extern void *posix_rawmemchr(const void *mem, int c);
+extern char *posix_strchr(const char *s, int c);
+extern char *posix_strrchr(const char *s, int c);
+extern char *posix_strpbrk(const char *s1, const char *s2);
+extern size_t posix_strcspn(const char *s1, const char *s2);
+extern size_t posix_strspn(const char *s1, const char *s2);
+extern char *posix_strstr(const char *s1, const char *s2);
+
+/* Collation Functions */
+extern int posix_strcoll(const char *s1, const char *s2);
+extern size_t posix_strxfrm(char *restrict s1, const char *restrict s2, size_t n);
+
+/* Error Messages */
+extern char *posix_strerror(int errnum);
+
+/* String Length */
+extern size_t posix_strlen(const char *s);
+
+#define strcpy posix_strcpy
+#define strncpy posix_strncpy
+#define strcat posix_strcat
+#define strncat posix_strncat
+#define mempcpy posix_mempcpy
+#define strdup posix_strdup
+
+#define memcmp posix_memcmp
+#define strcmp posix_strcmp
+#define strncmp posix_strncmp
+#define strcasecmp posix_strcasecmp
+#define strncasecmp posix_strncasecmp
+
+#define memchr posix_memchr
+#define rawmemchr posix_rawmemchr
+#define strchr posix_strchr
+#define strrchr posix_strrchr
+#define strpbrk posix_strpbrk
+#define strcspn posix_strcspn
+#define strspn posix_strspn
+#define strstr posix_strstr
+
+#define strcoll posix_strcoll
+#define strxfrm posix_strxfrm
+
+#define strerror posix_strerror
+
+#define strlen posix_strlen
+
+#endif  // POSIX_STRING_H_
+
+/** @}
+ */