change otg to host mode

hc

2024-05-11 04dd17822334871b23ea2862f7798fb0e0007777

 kernel/fs/notify/dnotify/dnotify.c
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@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  * Directory notifications for Linux.
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  *
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@@ -5,16 +6,6 @@
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  *
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  * Copyright (C) 2009 Eric Paris <Red Hat Inc>
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  * dnotify was largly rewritten to use the new fsnotify infrastructure
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- *
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- * This program is free software; you can redistribute it and/or modify it
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- * under the terms of the GNU General Public License as published by the
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- * Free Software Foundation; either version 2, or (at your option) any
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- * later version.
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- *
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- * This program is distributed in the hope that it will be useful, but
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- * WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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- * General Public License for more details.
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  */
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 #include <linux/fs.h>
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 #include <linux/module.h>
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@@ -22,6 +13,7 @@
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 #include <linux/sched/signal.h>
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 #include <linux/dnotify.h>
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 #include <linux/init.h>
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+#include <linux/security.h>
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 #include <linux/spinlock.h>
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 #include <linux/slab.h>
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 #include <linux/fdtable.h>
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@@ -78,13 +70,10 @@
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  * destroy the dnotify struct if it was not registered to receive multiple
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  * events.
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  */
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-static int dnotify_handle_event(struct fsnotify_group *group,
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-				struct inode *inode,
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-				u32 mask, const void *data, int data_type,
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-				const unsigned char *file_name, u32 cookie,
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-				struct fsnotify_iter_info *iter_info)
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+static int dnotify_handle_event(struct fsnotify_mark *inode_mark, u32 mask,
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+				struct inode *inode, struct inode *dir,
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+				const struct qstr *name, u32 cookie)
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 {
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-	struct fsnotify_mark *inode_mark = fsnotify_iter_inode_mark(iter_info);
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 	struct dnotify_mark *dn_mark;
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 	struct dnotify_struct *dn;
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 	struct dnotify_struct **prev;
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@@ -92,10 +81,7 @@
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 	__u32 test_mask = mask & ~FS_EVENT_ON_CHILD;
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 	/* not a dir, dnotify doesn't care */
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-	if (!S_ISDIR(inode->i_mode))
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-		return 0;
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-
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-	if (WARN_ON(fsnotify_iter_vfsmount_mark(iter_info)))
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+	if (!dir && !(mask & FS_ISDIR))
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 		return 0;
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 	dn_mark = container_of(inode_mark, struct dnotify_mark, fsn_mark);
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@@ -135,7 +121,7 @@
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 }
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 static const struct fsnotify_ops dnotify_fsnotify_ops = {
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-	.handle_event = dnotify_handle_event,
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+	.handle_inode_event = dnotify_handle_event,
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 	.free_mark = dnotify_free_mark,
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 };
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@@ -288,6 +274,17 @@
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 		goto out_err;
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 	}
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+	/*
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+	 * convert the userspace DN_* "arg" to the internal FS_*
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+	 * defined in fsnotify
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+	 */
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+	mask = convert_arg(arg);
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+
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+	error = security_path_notify(&filp->f_path, mask,
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+			FSNOTIFY_OBJ_TYPE_INODE);
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+	if (error)
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+		goto out_err;
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+
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 	/* expect most fcntl to add new rather than augment old */
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 	dn = kmem_cache_alloc(dnotify_struct_cache, GFP_KERNEL);
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 	if (!dn) {
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@@ -301,9 +298,6 @@
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 		error = -ENOMEM;
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 		goto out_err;
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 	}
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-
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-	/* convert the userspace DN_* "arg" to the internal FS_* defines in fsnotify */
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-	mask = convert_arg(arg);
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 	/* set up the new_fsn_mark and new_dn_mark */
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 	new_fsn_mark = &new_dn_mark->fsn_mark;