[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/fs/hfsplus/xattr_security.c b/src/kernel/linux/v4.14/fs/hfsplus/xattr_security.c
new file mode 100644
index 0000000..f5550b0
--- /dev/null
+++ b/src/kernel/linux/v4.14/fs/hfsplus/xattr_security.c
@@ -0,0 +1,91 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * linux/fs/hfsplus/xattr_trusted.c
+ *
+ * Vyacheslav Dubeyko <slava@dubeyko.com>
+ *
+ * Handler for storing security labels as extended attributes.
+ */
+
+#include <linux/security.h>
+#include <linux/nls.h>
+
+#include "hfsplus_fs.h"
+#include "xattr.h"
+#include "acl.h"
+
+static int hfsplus_security_getxattr(const struct xattr_handler *handler,
+ struct dentry *unused, struct inode *inode,
+ const char *name, void *buffer, size_t size)
+{
+ return hfsplus_getxattr(inode, name, buffer, size,
+ XATTR_SECURITY_PREFIX,
+ XATTR_SECURITY_PREFIX_LEN);
+}
+
+static int hfsplus_security_setxattr(const struct xattr_handler *handler,
+ struct dentry *unused, struct inode *inode,
+ const char *name, const void *buffer,
+ size_t size, int flags)
+{
+ return hfsplus_setxattr(inode, name, buffer, size, flags,
+ XATTR_SECURITY_PREFIX,
+ XATTR_SECURITY_PREFIX_LEN);
+}
+
+static int hfsplus_initxattrs(struct inode *inode,
+ const struct xattr *xattr_array,
+ void *fs_info)
+{
+ const struct xattr *xattr;
+ char *xattr_name;
+ int err = 0;
+
+ xattr_name = kmalloc(NLS_MAX_CHARSET_SIZE * HFSPLUS_ATTR_MAX_STRLEN + 1,
+ GFP_KERNEL);
+ if (!xattr_name)
+ return -ENOMEM;
+ for (xattr = xattr_array; xattr->name != NULL; xattr++) {
+
+ if (!strcmp(xattr->name, ""))
+ continue;
+
+ strcpy(xattr_name, XATTR_SECURITY_PREFIX);
+ strcpy(xattr_name +
+ XATTR_SECURITY_PREFIX_LEN, xattr->name);
+ memset(xattr_name +
+ XATTR_SECURITY_PREFIX_LEN + strlen(xattr->name), 0, 1);
+
+ err = __hfsplus_setxattr(inode, xattr_name,
+ xattr->value, xattr->value_len, 0);
+ if (err)
+ break;
+ }
+ kfree(xattr_name);
+ return err;
+}
+
+int hfsplus_init_security(struct inode *inode, struct inode *dir,
+ const struct qstr *qstr)
+{
+ return security_inode_init_security(inode, dir, qstr,
+ &hfsplus_initxattrs, NULL);
+}
+
+int hfsplus_init_inode_security(struct inode *inode,
+ struct inode *dir,
+ const struct qstr *qstr)
+{
+ int err;
+
+ err = hfsplus_init_posix_acl(inode, dir);
+ if (!err)
+ err = hfsplus_init_security(inode, dir, qstr);
+ return err;
+}
+
+const struct xattr_handler hfsplus_xattr_security_handler = {
+ .prefix = XATTR_SECURITY_PREFIX,
+ .get = hfsplus_security_getxattr,
+ .set = hfsplus_security_setxattr,
+};