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Commit c8489e0f authored by Vadim Pasternak's avatar Vadim Pasternak Committed by Greg Kroah-Hartman
Browse files

lib/string_helpers: Introduce string_upper() and string_lower() helpers 



[ Upstream commit 58eeba0bdb52afe5c18ce2a760ca9fe2901943e9 ]

Provide the helpers for string conversions to upper and lower cases.

Signed-off-by: default avatarVadim Pasternak <vadimp@mellanox.com>
Signed-off-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Stable-dep-of: 3c0f4f09c063 ("usb: gadget: u_ether: Fix host MAC address case")
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent 7e15602c

include/linux/string_helpers.h

+15 −0
Original line number Diff line number Diff line
@@ -2,6 +2,7 @@ 
#ifndef _LINUX_STRING_HELPERS_H_

#define _LINUX_STRING_HELPERS_H_



#include <linux/ctype.h>

#include <linux/types.h>



struct file;
@@ -75,6 +76,20 @@ 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);