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-rw-r--r--include/linux/string.h17
1 files changed, 17 insertions, 0 deletions
diff --git a/include/linux/string.h b/include/linux/string.h
index d18fc198aa2..489019ef169 100644
--- a/include/linux/string.h
+++ b/include/linux/string.h
@@ -10,8 +10,10 @@
#include <linux/compiler.h> /* for inline */
#include <linux/types.h> /* for size_t */
#include <linux/stddef.h> /* for NULL */
+#include <stdarg.h>
extern char *strndup_user(const char __user *, long);
+extern void *memdup_user(const void __user *, size_t);
/*
* Include machine specific inline routines
@@ -111,8 +113,23 @@ extern void argv_free(char **argv);
extern bool sysfs_streq(const char *s1, const char *s2);
+#ifdef CONFIG_BINARY_PRINTF
+int vbin_printf(u32 *bin_buf, size_t size, const char *fmt, va_list args);
+int bstr_printf(char *buf, size_t size, const char *fmt, const u32 *bin_buf);
+int bprintf(u32 *bin_buf, size_t size, const char *fmt, ...) __printf(3, 4);
+#endif
+
extern ssize_t memory_read_from_buffer(void *to, size_t count, loff_t *ppos,
const void *from, size_t available);
+/**
+ * strstarts - does @str start with @prefix?
+ * @str: string to examine
+ * @prefix: prefix to look for.
+ */
+static inline bool strstarts(const char *str, const char *prefix)
+{
+ return strncmp(str, prefix, strlen(prefix)) == 0;
+}
#endif
#endif /* _LINUX_STRING_H_ */