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s390/string: Remove optimized strncpy()

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There are hardly any strncpy() users left, therefore drop the
optimized s390 variant.

Acked-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
This commit is contained in:
Heiko Carstens 2025-04-11 15:29:10 +02:00
parent 1c745df519
commit e7b3f9a058
2 changed files with 0 additions and 25 deletions
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2
arch/s390/include/asm/string.h
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@ -30,7 +30,6 @@ void *memmove(void *dest, const void *src, size_t n);
#define __HAVE_ARCH_STRLCAT /* arch function */
#define __HAVE_ARCH_STRLEN /* inline & arch function */
#define __HAVE_ARCH_STRNCAT /* arch function */
#define __HAVE_ARCH_STRNCPY /* arch function */
#define __HAVE_ARCH_STRNLEN /* inline & arch function */
#define __HAVE_ARCH_STRSTR /* arch function */
#define __HAVE_ARCH_MEMSET16 /* arch function */
@ -42,7 +41,6 @@ int memcmp(const void *s1, const void *s2, size_t n);
int strcmp(const char *s1, const char *s2);
size_t strlcat(char *dest, const char *src, size_t n);
char *strncat(char *dest, const char *src, size_t n);
char *strncpy(char *dest, const char *src, size_t n);
char *strstr(const char *s1, const char *s2);
#endif /* !defined(CONFIG_KASAN) && !defined(CONFIG_KMSAN) */

23
arch/s390/lib/string.c
View File

@ -101,26 +101,6 @@ char *strcpy(char *dest, const char *src)
EXPORT_SYMBOL(strcpy);
#endif
/**
* strncpy - Copy a length-limited, %NUL-terminated string
* @dest: Where to copy the string to
* @src: Where to copy the string from
* @n: The maximum number of bytes to copy
*
* The result is not %NUL-terminated if the source exceeds
* @n bytes.
*/
#ifdef __HAVE_ARCH_STRNCPY
char *strncpy(char *dest, const char *src, size_t n)
{
size_t len = __strnend(src, n) - src;
memset(dest + len, 0, n - len);
memcpy(dest, src, len);
return dest;
}
EXPORT_SYMBOL(strncpy);
#endif
/**
* strcat - Append one %NUL-terminated string to another
* @dest: The string to be appended to
@ -181,9 +161,6 @@ EXPORT_SYMBOL(strlcat);
* @n: The maximum numbers of bytes to copy
*
* returns a pointer to @dest
*
* Note that in contrast to strncpy, strncat ensures the result is
* terminated.
*/
#ifdef __HAVE_ARCH_STRNCAT
char *strncat(char *dest, const char *src, size_t n)