Index: uspace/app/bithenge/linux/os.h
===================================================================
--- uspace/app/bithenge/linux/os.h	(revision da0fef6126d5ca1836cfcd2bb32043a899aff458)
+++ uspace/app/bithenge/linux/os.h	(revision da0fef6126d5ca1836cfcd2bb32043a899aff458)
@@ -0,0 +1,97 @@
+/*
+ * Copyright (c) 2012 Sean Bartell
+ * 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.
+ */
+
+#ifndef BITHENGE_OS_H_
+#define BITHENGE_OS_H_
+
+#include <endian.h>
+#include <errno.h>
+#include <memory.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <string.h>
+#include <wchar.h>
+
+#define max(aleph, bet) ((aleph) > (bet) ? (aleph) : (bet))
+#define min(aleph, bet) ((aleph) < (bet) ? (aleph) : (bet))
+
+#define EOK 0
+#define ELIMIT EINVAL
+
+typedef uint64_t aoff64_t;
+
+typedef const char *string_iterator_t;
+
+static inline string_iterator_t string_iterator(const char *string)
+{
+	return string;
+}
+
+static inline int string_iterator_next(string_iterator_t *i, wchar_t *out)
+{
+	wint_t rc = btowc(*(*i)++); // TODO
+	*out = (wchar_t) rc;
+	return rc == WEOF ? EILSEQ : EOK;
+}
+
+static inline bool string_iterator_done(const string_iterator_t *i)
+{
+	return !**i;
+}
+
+static inline size_t str_length(const char *string)
+{
+	return strlen(string);
+}
+
+static inline const char *str_chr(const char *string, wchar_t ch)
+{
+	return strchr(string, wctob(ch)); // TODO
+}
+
+static inline int str_cmp(const char *s1, const char *s2)
+{
+	return strcmp(s1, s2);
+}
+
+static inline int str_lcmp(const char *s1, const char *s2, size_t max_len)
+{
+	return strncmp(s1, s2, max_len);
+}
+
+static inline const char *str_error(int e)
+{
+	return strerror(e);
+}
+
+static inline uint32_t uint32_t_le2host(uint32_t val)
+{
+	return le32toh(val);
+}
+
+#endif