1 files changed, 27 insertions, 0 deletions
diff --git a/lib_generic/string.c b/lib_generic/string.c
index d06a64501..5ba8d7cb5 100644
--- a/lib_generic/string.c
+++ b/lib_generic/string.c
@@ -364,6 +364,33 @@ char * strsep(char **s, const char *ct)
 }
 #endif
 
+#ifndef __HAVE_ARCH_STRSWAB
+/**
+ * strswab - swap adjacent even and odd bytes in %NUL-terminated string
+ * s: address of the string
+ *
+ * returns the address of the swapped string or NULL on error. If
+ * string length is odd, last byte is untouched.
+ */
+char *strswab(const char *s)
+{
+	char *p;
+
+	if ((NULL == s) || ('\0' == *s)) {
+		return (NULL);
+	}
+
+	for (p = ((char *)s + 1); '\0' != *p; p += 2) {
+		char  tmp;
+		tmp = *(p-1);
+		*(p-1) = *p;
+		*p = tmp;
+	}
+
+	return (char *) s;
+}
+#endif
+
 #ifndef __HAVE_ARCH_MEMSET
 /**
  * memset - Fill a region of memory with the given value