1 files changed, 31 insertions, 0 deletions
diff --git a/mdk-stage1/dietlibc/libshell/realpath.c b/mdk-stage1/dietlibc/libshell/realpath.c
new file mode 100644
index 000000000..1377018e5
--- /dev/null
+++ b/mdk-stage1/dietlibc/libshell/realpath.c
@@ -0,0 +1,31 @@
+#include <limits.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <string.h>
+#include "dietfeatures.h"
+
+char *realpath(const char *path, char *resolved_path) {
+  int fd=open(".",O_RDONLY);
+  char *tmp="";
+  if (chdir(path)) {
+#ifdef WANT_THREAD_SAFE
+    if (*__errno_location()==ENOTDIR)
+#else
+    if (errno==ENOTDIR)
+#endif
+    {
+      if ((tmp=strrchr(path,'/'))) {
+	memmove(resolved_path,path,tmp-path);
+	resolved_path[tmp-path]=0;
+	if (chdir(resolved_path)) { resolved_path=0; goto abort; }
+      }
+    }
+  }
+  if (!getcwd(resolved_path,PATH_MAX)) { resolved_path=0; goto abort; }
+  strcat(resolved_path,tmp);
+abort:
+  fchdir(fd);
+  close(fd);
+  return resolved_path;
+}