From patchwork Sat Jul 6 09:58:20 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Muhammad Qasim Abdul Majeed X-Patchwork-Id: 811482 Received: from mail-lj1-f174.google.com (mail-lj1-f174.google.com [209.85.208.174]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8F547A95B; Sat, 6 Jul 2024 10:17:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.208.174 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720261036; cv=none; b=RweUqY28l3LxfQ/Fnh0RQoyrhzPwTQFbLIjCNSvUla3C9iLWFo1PVAggoSioSFRrpA1Ce0/AvKS2T6/G0JJX+JOrbKuWy6/7p5ZrQslJPpr2/0orIwB0ce3pFYRAqxEYbMYkMAS7sdOAy6NCEcEKMqaoNcYxpZuSQAHLxfuD4Rg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720261036; c=relaxed/simple; bh=Cx3CoKjkKOWMggfaobu1ojgkAKtB3hoHKESSquVw6C8=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=DWvSkkbk3BlLYri33W5VHGAOk7YODkrHrrmGpH0h+RFb07XNBDhzxDpwBsBmbKExbwkzEMo5oJFgXlQwennRZ1HO+Gdrh6cJoZzMFZQOqU9F55Nh0yz26xEzFrE83q/75Qn34RaNYBR5WEP6fNztNOdke5C5xNRpe6S5mO+2WfY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=Eev6C2YU; arc=none smtp.client-ip=209.85.208.174 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Eev6C2YU" Received: by mail-lj1-f174.google.com with SMTP id 38308e7fff4ca-2ebe6495aedso23622431fa.0; Sat, 06 Jul 2024 03:17:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1720261033; x=1720865833; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=6mtf5cQJcG2OUNA2j4NwJD3wssJxEz1X2PUn8pPQqvI=; b=Eev6C2YUvljlbtp/FFy01LxwWcpUjm2Ut7lGk+ESjsHmYc8qS1V4hiI9hGaMSsNwyt uksY3Gl+/IGLRS51OGI6WRjbZnt/+AKzc3mx3g1xxUOK32IDRUVC1dNGAxDfpGr/4+yU ArZ9+Y1bco8YMGAjJ9BtozPAo/3kf8UeAiwQ6zQz8C/WR4VL5dI9lihRf5DBOnHSWLbH TMgKpVSNNXFvIrn7hIdCo/6uvet1VW9IwiI7/euUo8lw5ponMLAbAnA/wqxDGdTNIQDE LQGC1TUwLSr5FEvKZ74H+PXYJXIAvwnTCiHSCPtKwm+zrGvvWdWdDdfx4oHUnbjQII0Z v3sA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1720261033; x=1720865833; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=6mtf5cQJcG2OUNA2j4NwJD3wssJxEz1X2PUn8pPQqvI=; b=JLyRUToeWw52T+PzPlXc99CesPp/t1WY/EEJtZhqIavKABmczPfzNh/tAGn3nFMJxK bjFUWS33SWf27CZid7+W8aDKKgRkDrj5wX/Z7IKndm8MR7ACgod7kLNYGjpSpUPNuBoG nVwhfZNPMwHIPTpdxNx+ENXqMMnuwB8yJFWt1A0fQ1958WpfUrV7i481JlGkTAUsKAaB tiWF2kHEM4dN0U1GBNLl4DIlAkn7R4SQ3g/c4rHr2uWePOtWTUPyhKDQjhfNPCEBPEn9 58zTEU35ZhyliLekZPyj8TdfGYJrQMDbvQuQ5DrbWfSOtgzdjK+DxVyGEkLPDhLFTaHj O+Wg== X-Forwarded-Encrypted: i=1; AJvYcCVKxi22AnOpBoVcReITXwy2AJPFrWML8gS+cW0vbW4Qa+CD3wfiPlKrDqkwT+LNkhI/S9wTQ3F+B3b35OLC+3XIDnPXo8SJTIEAbZTJK+aAHrsOuyxjUpsn3D3byaVVgllOTXfX59Hpjw== X-Gm-Message-State: AOJu0Yy+8FGlNjq1IL/nKUMavzK5aQ2razVvyIOAjqlr+hxN2/Sd7lqh voEcP6XxsPNWdoPm03lxNotAX/EG2Qm+3DVB4wTgP3szXNRtbbrg X-Google-Smtp-Source: AGHT+IF0v/E8P1gsZPyVFbdrgJKd+4rPi6lHFTML/dMGYzqjh9SytQtZ+G3aM/y+xcDGxs8oJZOAuA== X-Received: by 2002:a05:651c:2226:b0:2ec:4d03:d5ee with SMTP id 38308e7fff4ca-2ee8edd8ccfmr58796651fa.51.1720261032284; Sat, 06 Jul 2024 03:17:12 -0700 (PDT) Received: from qamajeed.Home ([39.45.163.30]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4264a28d3dasm92117815e9.46.2024.07.06.03.17.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 06 Jul 2024 03:17:11 -0700 (PDT) From: Muhammad Qasim Abdul Majeed To: rafael@kernel.org, lenb@kernel.org, linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Muhammad Qasim Abdul Majeed Subject: [PATCH v2 4/4] Updating a deprecated use of strcpy in button.c file. Date: Sat, 6 Jul 2024 14:58:20 +0500 Message-Id: <20240706095818.96150-1-qasim.majeed20@gmail.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Replacing strcpy with strscpy. strcpy is a deprecated function. It should be removed from the kernel source. Link: https://github.com/KSPP/linux/issues/88 Signed-off-by: Muhammad Qasim Abdul Majeed Hi All, strscpy requires destination size for pointers. (https://elixir.bootlin.com/linux/latest/source/include/linux/string.h#L95) acpi_device_name is defined as 40 bytes no macro definition for length (https://elixir.bootlin.com/linux/latest/source/include/acpi/acpi_bus.h#L224). Placing a constant number to copy is not a good idea. If name lenght chages in future it will be an issue. Replacing name array with acpi_device_name macro for this reason. ACPI compile time arrays should be defined using a macro. It keeps code change consistent accross the source (#define ACPI_DEVICE_NAME_LENGTH) If this suggestions seems good to you, I'll push the patch for the sugested change. Best Regards, Qasim --- v1-> v2: It fixes the build issue, removes char* name and use acpi_device_name for simplicity. drivers/acpi/button.c | 13 ++++++------- 1 file changed, 6 insertions(+), 7 deletions(-) diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c index cc61020756be..9dda4a3998f8 100644 --- a/drivers/acpi/button.c +++ b/drivers/acpi/button.c @@ -521,7 +521,7 @@ static int acpi_button_add(struct acpi_device *device) struct input_dev *input; const char *hid = acpi_device_hid(device); acpi_status status; - char *name, *class; + char *class; int error = 0; if (!strcmp(hid, ACPI_BUTTON_HID_LID) && @@ -540,27 +540,26 @@ static int acpi_button_add(struct acpi_device *device) goto err_free_button; } - name = acpi_device_name(device); class = acpi_device_class(device); if (!strcmp(hid, ACPI_BUTTON_HID_POWER) || !strcmp(hid, ACPI_BUTTON_HID_POWERF)) { button->type = ACPI_BUTTON_TYPE_POWER; handler = acpi_button_notify; - strcpy(name, ACPI_BUTTON_DEVICE_NAME_POWER); + strscpy(acpi_device_name(device), ACPI_BUTTON_DEVICE_NAME_POWER); sprintf(class, "%s/%s", ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_POWER); } else if (!strcmp(hid, ACPI_BUTTON_HID_SLEEP) || !strcmp(hid, ACPI_BUTTON_HID_SLEEPF)) { button->type = ACPI_BUTTON_TYPE_SLEEP; handler = acpi_button_notify; - strcpy(name, ACPI_BUTTON_DEVICE_NAME_SLEEP); + strscpy(acpi_device_name(device), ACPI_BUTTON_DEVICE_NAME_SLEEP); sprintf(class, "%s/%s", ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_SLEEP); } else if (!strcmp(hid, ACPI_BUTTON_HID_LID)) { button->type = ACPI_BUTTON_TYPE_LID; handler = acpi_lid_notify; - strcpy(name, ACPI_BUTTON_DEVICE_NAME_LID); + strscpy(acpi_device_name(device), ACPI_BUTTON_DEVICE_NAME_LID); sprintf(class, "%s/%s", ACPI_BUTTON_CLASS, ACPI_BUTTON_SUBCLASS_LID); input->open = acpi_lid_input_open; @@ -579,7 +578,7 @@ static int acpi_button_add(struct acpi_device *device) snprintf(button->phys, sizeof(button->phys), "%s/button/input0", hid); - input->name = name; + input->name = acpi_device_name(device); input->phys = button->phys; input->id.bustype = BUS_HOST; input->id.product = button->type; @@ -636,7 +635,7 @@ static int acpi_button_add(struct acpi_device *device) } device_init_wakeup(&device->dev, true); - pr_info("%s [%s]\n", name, acpi_device_bid(device)); + pr_info("%s [%s]\n", input->name, acpi_device_bid(device)); return 0; err_input_unregister: