From: Vadim Pasternak <vadimp@xxxxxxxxxxxx>
[ Upstream commit 58eeba0bdb52afe5c18ce2a760ca9fe2901943e9 ]
Provide the helpers for string conversions to upper and lower cases.
Signed-off-by: Vadim Pasternak <vadimp@xxxxxxxxxxxx>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Stable-dep-of: 3c0f4f09c063 ("usb: gadget: u_ether: Fix host MAC address case")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
include/linux/string_helpers.h | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/include/linux/string_helpers.h b/include/linux/string_helpers.h
index d23c5030901a2..0618885b3edc7 100644
--- a/include/linux/string_helpers.h
+++ b/include/linux/string_helpers.h
@@ -2,6 +2,7 @@
#ifndef _LINUX_STRING_HELPERS_H_
#define _LINUX_STRING_HELPERS_H_
+#include <linux/ctype.h>
#include <linux/types.h>
struct file;
@@ -72,6 +73,20 @@ static inline int string_escape_str_any_np(const char *src, char *dst,
return string_escape_str(src, dst, sz, ESCAPE_ANY_NP, only);
}
+static inline void string_upper(char *dst, const char *src)
+{
+ do {
+ *dst++ = toupper(*src);
+ } while (*src++);
+}
+
+static inline void string_lower(char *dst, const char *src)
+{
+ do {
+ *dst++ = tolower(*src);
+ } while (*src++);
+}
+
char *kstrdup_quotable(const char *src, gfp_t gfp);
char *kstrdup_quotable_cmdline(struct task_struct *task, gfp_t gfp);
char *kstrdup_quotable_file(struct file *file, gfp_t gfp);
--
2.39.2
