sdutil Write DOS Master Boot Record

libstring/src.mk

@@ -1,3 +1,5 @@
-c += string.c
+c += string.c \
+		 strconv.c
 
-o += string.o
+o += string.o \
+		 strconv.o

libstring/strconv.c

@@ -0,0 +1,15 @@
+#include <stdint.h>
+
+uint64_t str_to_uint64 (const char* s) {
+  uint64_t r = 0;
+
+  if (!s)
+    return 0;
+
+  while (*s >= '0' && *s <= '9') {
+    r = r * 10 + (*s - '0');
+    s++;
+  }
+
+  return r;
+}

libstring/strconv.h

@@ -0,0 +1,12 @@
+#ifndef _LIBSTRING_STRCONV_H
+#define _LIBSTRING_STRCONV_H
+
+#include <stdint.h>
+
+#define str_to_uint32(s) ((uint32_t)str_to_uint64 ((s)))
+#define str_to_uint16(s) ((uint16_t)str_to_uint64 ((s)))
+#define str_to_uint8(s)  ((uint8_t)str_to_uint64 ((s)))
+
+uint64_t str_to_uint64 (const char* s);
+
+#endif // _LIBSTRING_STRCONV_H