extern char *guestfs_safe_strdup (guestfs_h *g, const char *str);
extern char *guestfs_safe_strndup (guestfs_h *g, const char *str, size_t n);
extern void *guestfs_safe_memdup (guestfs_h *g, void *ptr, size_t size);
extern char *guestfs_safe_strdup (guestfs_h *g, const char *str);
extern char *guestfs_safe_strndup (guestfs_h *g, const char *str, size_t n);
extern void *guestfs_safe_memdup (guestfs_h *g, void *ptr, size_t size);