[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/fs/ext4/symlink.c b/src/kernel/linux/v4.14/fs/ext4/symlink.c
new file mode 100644
index 0000000..dd05af9
--- /dev/null
+++ b/src/kernel/linux/v4.14/fs/ext4/symlink.c
@@ -0,0 +1,74 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * linux/fs/ext4/symlink.c
+ *
+ * Only fast symlinks left here - the rest is done by generic code. AV, 1999
+ *
+ * Copyright (C) 1992, 1993, 1994, 1995
+ * Remy Card (card@masi.ibp.fr)
+ * Laboratoire MASI - Institut Blaise Pascal
+ * Universite Pierre et Marie Curie (Paris VI)
+ *
+ * from
+ *
+ * linux/fs/minix/symlink.c
+ *
+ * Copyright (C) 1991, 1992 Linus Torvalds
+ *
+ * ext4 symlink handling code
+ */
+
+#include <linux/fs.h>
+#include <linux/namei.h>
+#include "ext4.h"
+#include "xattr.h"
+
+static const char *ext4_encrypted_get_link(struct dentry *dentry,
+ struct inode *inode,
+ struct delayed_call *done)
+{
+ struct page *cpage = NULL;
+ const void *caddr;
+ unsigned int max_size;
+ const char *paddr;
+
+ if (!dentry)
+ return ERR_PTR(-ECHILD);
+
+ if (ext4_inode_is_fast_symlink(inode)) {
+ caddr = EXT4_I(inode)->i_data;
+ max_size = sizeof(EXT4_I(inode)->i_data);
+ } else {
+ cpage = read_mapping_page(inode->i_mapping, 0, NULL);
+ if (IS_ERR(cpage))
+ return ERR_CAST(cpage);
+ caddr = page_address(cpage);
+ max_size = inode->i_sb->s_blocksize;
+ }
+
+ paddr = fscrypt_get_symlink(inode, caddr, max_size, done);
+ if (cpage)
+ put_page(cpage);
+ return paddr;
+}
+
+const struct inode_operations ext4_encrypted_symlink_inode_operations = {
+ .get_link = ext4_encrypted_get_link,
+ .setattr = ext4_setattr,
+ .getattr = ext4_getattr,
+ .listxattr = ext4_listxattr,
+};
+
+const struct inode_operations ext4_symlink_inode_operations = {
+ .get_link = page_get_link,
+ .setattr = ext4_setattr,
+ .getattr = ext4_getattr,
+ .listxattr = ext4_listxattr,
+};
+
+const struct inode_operations ext4_fast_symlink_inode_operations = {
+ .get_link = simple_get_link,
+ .setattr = ext4_setattr,
+ .getattr = ext4_getattr,
+ .listxattr = ext4_listxattr,
+};