-/* external library functions */
-extern int lstat(const char *file_name, struct stat *buf);
-extern int readlink(const char *path, char *buf, size_t bufsize);
-extern int getpagesize(void);
-extern int isascii(int c);
+#define safestrcpy(to, from) strncpy(to, from, sizeof(to)-1)
+#define safestrcat(to, from) strncat(to, from, sizeof(to) - strlen(to)-1)
+
+#define safestrcpymax(to, from, max) \
+do { \
+ to[max-1] = '\0'; \
+ strncpy(to, from, max-1); \
+} while (0)
+
+#define safestrcatmax(to, from, max) \
+do { \
+ to[max-1] = '\0'; \
+ strncat(to, from, max - strlen(to)-1); \
+} while (0)
+
+extern struct sysfs_attribute *get_attribute(void *dev, const char *name);
+extern struct dlist *read_dir_subdirs(const char *path);
+extern struct dlist *read_dir_links(const char *path);
+extern struct dlist *get_attributes_list(void *dev);