1 files changed, 30 insertions, 0 deletions
diff --git a/sys/compat/linuxkpi/common/include/linux/string.h b/sys/compat/linuxkpi/common/include/linux/string.h
index 9e1818a38594..f7b64560d254 100644
--- a/sys/compat/linuxkpi/common/include/linux/string.h
+++ b/sys/compat/linuxkpi/common/include/linux/string.h
@@ -98,6 +98,18 @@ kmemdup(const void *src, size_t len, gfp_t gfp)
 	return (dst);
 }
 
+/* See slab.h for kvmalloc/kvfree(). */
+static inline void *
+kvmemdup(const void *src, size_t len, gfp_t gfp)
+{
+	void *dst;
+
+	dst = kvmalloc(len, gfp);
+	if (dst != NULL)
+		memcpy(dst, src, len);
+	return (dst);
+}
+
 static inline char *
 strndup_user(const char __user *ustr, long n)
 {
@@ -149,6 +161,24 @@ skip_spaces(const char *str)
 	return (__DECONST(char *, str));
 }
 
+/*
+ * This function trims whitespaces at the end of a string and returns a pointer
+ * to the first non-whitespace character.
+ */
+static inline char *
+strim(char *str)
+{
+	char *end;
+
+	end = str + strlen(str);
+	while (end >= str && (*end == '\0' || isspace(*end))) {
+		*end = '\0';
+		end--;
+	}
+
+	return (skip_spaces(str));
+}
+
 static inline void *
 memchr_inv(const void *start, int c, size_t length)
 {