X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=fs%2Fnamei.c;h=385f7817bfccbd12fbc352c39827586d4cf953d7;hb=ddf2965d77558eefee745c9dce22ad7ef5c7b88e;hp=d580df2e6804d0863d555234388a34397387c3e6;hpb=878a876b2e10888afe53766dcca33f723ae20edc;p=firefly-linux-kernel-4.4.55.git

diff --git a/fs/namei.c b/fs/namei.c
index d580df2e6804..385f7817bfcc 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -196,6 +196,7 @@ recopy:
 		goto error;
 
 	result->uptr = filename;
+	result->aname = NULL;
 	audit_getname(result);
 	return result;
 
@@ -210,6 +211,35 @@ getname(const char __user * filename)
 	return getname_flags(filename, 0, NULL);
 }
 
+/*
+ * The "getname_kernel()" interface doesn't do pathnames longer
+ * than EMBEDDED_NAME_MAX. Deal with it - you're a kernel user.
+ */
+struct filename *
+getname_kernel(const char * filename)
+{
+	struct filename *result;
+	char *kname;
+	int len;
+
+	len = strlen(filename);
+	if (len >= EMBEDDED_NAME_MAX)
+		return ERR_PTR(-ENAMETOOLONG);
+
+	result = __getname();
+	if (unlikely(!result))
+		return ERR_PTR(-ENOMEM);
+
+	kname = (char *)result + sizeof(*result);
+	result->name = kname;
+	result->uptr = NULL;
+	result->aname = NULL;
+	result->separate = false;
+
+	strlcpy(kname, filename, EMBEDDED_NAME_MAX);
+	return result;
+}
+
 #ifdef CONFIG_AUDITSYSCALL
 void putname(struct filename *name)
 {