From patchwork Sun Dec 22 20:13:48 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= X-Patchwork-Id: 13918279 Received: from todd.t-8ch.de (todd.t-8ch.de [159.69.126.157]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 425E718F2CF; Sun, 22 Dec 2024 20:13:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=159.69.126.157 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734898436; cv=none; b=PMyEKVnQXSUJwJsJbO0gWVvd/O6355f2YfeZHGe2h25r4YYnnYD8LJVZiCAGmPCpO7CR4DglSdvwrrH/eAmDpliHh6W/swcR/YsJvd1OTt2oYsfPrTOASTlfhJon9n24aM0teN8iin08zQ9Zn6Sv8LPYX0WBwsAaMllnMMfEryY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734898436; c=relaxed/simple; bh=XiaigyMkzhHX0XHNnYke8oWYVDhi3eQnjtdAWB2AnVs=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:To:Cc; b=ULoHpx9N+cyY/UghZoUFAmCxUmPvIXndpFaj8/vC14F9cyVhP/5QkrvWQ2ydmbqAStecpuHElKPQrlFvjBFfXx5s42Tce4X81j/S6Ugt/ujm/kxp8z+fjYAmGIWUdn/d2dDUjXh4IUNoXMbo41e/g1U8loJfwjUlZzR0FeZ3H+Q= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=weissschuh.net; spf=pass smtp.mailfrom=weissschuh.net; dkim=pass (1024-bit key) header.d=weissschuh.net header.i=@weissschuh.net header.b=I4G2XPUU; arc=none smtp.client-ip=159.69.126.157 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=weissschuh.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=weissschuh.net Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=weissschuh.net header.i=@weissschuh.net header.b="I4G2XPUU" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=weissschuh.net; s=mail; t=1734898432; bh=XiaigyMkzhHX0XHNnYke8oWYVDhi3eQnjtdAWB2AnVs=; h=From:Date:Subject:To:Cc:From; b=I4G2XPUUn4WVFNIw9QEG3e7wLkd7Wh428uyHwqcGrRT+MMxefex/MPpQq04QOZCAc pzVop4V/h2lOnhgSH99svQIa1v3XbqxDctOnz53mC5dXGaJbdu0IaQ+AI+sW8izhia R96TmzBWLvK9X7uXc0lHy7iwCGo5cMGwmI3DKYiU= From: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= Date: Sun, 22 Dec 2024 21:13:48 +0100 Subject: [PATCH] usbip: vudc: Constify 'struct bin_attribute' Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20241222-sysfs-const-bin_attr-usbip-v1-1-20d611a9bfa4@weissschuh.net> X-B4-Tracking: v=1; b=H4sIAPtyaGcC/x3MwQpAQBAA0F/RnE3ZQcmvSNplMJelnSWSf7c5v st7QDkIK7TZA4FPUdl8gskzGFfrF0aZkoEKqgwRod46K46b14hO/GBjDHiokx2J6to5Q2VjJ0j BHniW68+7/n0/Xx14smwAAAA= X-Change-ID: 20241222-sysfs-const-bin_attr-usbip-2255bb1238ad To: Valentina Manea , Shuah Khan , Hongren Zheng , Greg Kroah-Hartman Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, =?utf-8?q?Thoma?= =?utf-8?q?s_Wei=C3=9Fschuh?= X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1734898431; l=1996; i=linux@weissschuh.net; s=20221212; h=from:subject:message-id; bh=XiaigyMkzhHX0XHNnYke8oWYVDhi3eQnjtdAWB2AnVs=; b=9g7t3NLcARWIr20JkNRl7sR9EfEXLw7wjK/Ha1VdbNWjhmMjd0Gxa7QwXkaKK35Qo/Quo7tiS ZBG+Ko1eDE1ChZL85c87FMjjOCAbFXOBL+Qj8A4GHglZJ0CeqnzCtPP X-Developer-Key: i=linux@weissschuh.net; a=ed25519; pk=KcycQgFPX2wGR5azS7RhpBqedglOZVgRPfdFSPB1LNw= The sysfs core now allows instances of 'struct bin_attribute' to be moved into read-only memory. Make use of that to protect them against accidental or malicious modifications. Signed-off-by: Thomas Weißschuh --- drivers/usb/usbip/vudc_sysfs.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) --- base-commit: bcde95ce32b666478d6737219caa4f8005a8f201 change-id: 20241222-sysfs-const-bin_attr-usbip-2255bb1238ad Best regards, diff --git a/drivers/usb/usbip/vudc_sysfs.c b/drivers/usb/usbip/vudc_sysfs.c index 907a43a008964d647d19f9631faf4a443bc00019..2aae3edfc81369e3f84aadec7050356a4347c104 100644 --- a/drivers/usb/usbip/vudc_sysfs.c +++ b/drivers/usb/usbip/vudc_sysfs.c @@ -67,7 +67,7 @@ int get_gadget_descs(struct vudc *udc) * Exposes device descriptor from the gadget driver. */ static ssize_t dev_desc_read(struct file *file, struct kobject *kobj, - struct bin_attribute *attr, char *out, + const struct bin_attribute *attr, char *out, loff_t off, size_t count) { struct device *dev = kobj_to_dev(kobj); @@ -88,7 +88,7 @@ static ssize_t dev_desc_read(struct file *file, struct kobject *kobj, spin_unlock_irqrestore(&udc->lock, flags); return ret; } -static BIN_ATTR_RO(dev_desc, sizeof(struct usb_device_descriptor)); +static const BIN_ATTR_RO(dev_desc, sizeof(struct usb_device_descriptor)); static ssize_t usbip_sockfd_store(struct device *dev, struct device_attribute *attr, @@ -252,14 +252,14 @@ static struct attribute *dev_attrs[] = { NULL, }; -static struct bin_attribute *dev_bin_attrs[] = { +static const struct bin_attribute *const dev_bin_attrs[] = { &bin_attr_dev_desc, NULL, }; static const struct attribute_group vudc_attr_group = { .attrs = dev_attrs, - .bin_attrs = dev_bin_attrs, + .bin_attrs_new = dev_bin_attrs, }; const struct attribute_group *vudc_groups[] = {