add path impl for linux

fs_linux.c

@@ -0,0 +1,44 @@
+/*
+ * fs_linux.c
+ *
+ *  Created on: 20.10.2017
+ *      Author: julian
+ */
+#include "fs.h"
+#include <string.h>
+#include <stdlib.h>
+
+void create_path(struct path * p, const char * fsPath) {
+	free_path(p);
+
+	const char *start = fsPath, *current = fsPath;
+
+	if (*start == '/') {
+		// absolute path
+		p->absolute = 1;
+		current = ++start;
+	}
+
+	for (;*current != '\0'; ++current) {
+		if (*current == '/')  {
+			p->entries = realloc(p->entries, sizeof(p->entries[0]) * (p->len+1));
+			p->entries[p->len] = strndup(start, current-start);
+
+			// skip delimiter
+			start = current+1;
+			p->len++;
+		}
+	}
+
+	if (start != current) {
+		p->entries = realloc(p->entries, sizeof(p->entries[0]) *(p->len+1));
+		p->entries[p->len] = strdup(start);
+		p->len++;
+	}
+}
+
+FILE * path_fopen(struct path * p, const char * flags) {
+	// reconstruct system path
+	return NULL;
+
+}