From patchwork Sun Nov 3 17:03:35 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: 2005776 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; secure) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=0lKbajhy; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=weissschuh.net header.i=@weissschuh.net header.a=rsa-sha256 header.s=mail header.b=V5VfZeBh; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=none (no SPF record) smtp.mailfrom=lists.infradead.org (client-ip=2607:7c80:54:3::133; helo=bombadil.infradead.org; envelope-from=linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org; receiver=patchwork.ozlabs.org) Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:3::133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (secp384r1) server-digest SHA384) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4XhLZJ3tp1z1xy9 for ; Mon, 4 Nov 2024 04:05:12 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:Cc:To:In-Reply-To:References:Message-Id :MIME-Version:Subject:Date:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=RFuE0WoIDH3KbJu7SecDoF4WBxPmFr3Se3zbdiY/E9M=; b=0lKbajhyT5ZSFh WNm9ze3wB/NfWvCkl3YvKAmARkvgcxlGkHJHTKPOQbtcPpBWzUkkZN+GryzpOyLt7Peuf50CsfGac 3fLvObDY0or8Z0XM6xMUtN2Qc6ZfhzV63JImIlDF+e+QJfwuzAGSok47unMdhANgwZ5QENP+1nRUK 7j2EOzJYfTlNqUVnRJdm9RZ7K7utHeRXJyiZQL4l4C7GgKUJBrWBuw7LaHbpeDFgMvC0aEhgohVHF rad/pdmKT3fP2Qs+LP+DNp2PVGwwtg1TYJAeqV8EtKoETHAej4iONGqZOdBn9lXlQpcK13fohCc54 D+o58D3INCMfrGj8Ln1A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1t7e29-0000000BksJ-2aiF; Sun, 03 Nov 2024 17:05:01 +0000 Received: from todd.t-8ch.de ([159.69.126.157]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1t7e1t-0000000BkbZ-2ALs for linux-mtd@lists.infradead.org; Sun, 03 Nov 2024 17:04:49 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=weissschuh.net; s=mail; t=1730653481; bh=8oN+tVBMjVju8UGiuvmEhTX5MjVK0/eJhQB1Q2KrGWg=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=V5VfZeBhkpEc+BJr7U99hw+VXSO0/H281e2i3OYqzSsy0SGGDBKgbIYwAQQopjk5p I7JCsIntvCcuTbL2t6kOL8I3VTTsft0tPJFg0d7SRbJHJj1BfvHU9DrPRIY2+deo0n 668eR2kfbt5yn/SgMliSXeyVZwt9yiewus2l4ruQ= From: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= Date: Sun, 03 Nov 2024 17:03:35 +0000 Subject: [PATCH v2 06/10] sysfs: treewide: constify attribute callback of bin_attribute::mmap() MIME-Version: 1.0 Message-Id: <20241103-sysfs-const-bin_attr-v2-6-71110628844c@weissschuh.net> References: <20241103-sysfs-const-bin_attr-v2-0-71110628844c@weissschuh.net> In-Reply-To: <20241103-sysfs-const-bin_attr-v2-0-71110628844c@weissschuh.net> To: Greg Kroah-Hartman , "Rafael J. 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The original message has been attached to this so you can view it or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: The mmap() callbacks should not modify the struct bin_attribute passed as argument. Enforce this by marking the argument as const. As there are not many callback implementers perform this change throughout the tree at once. Content analysis details: (-2.1 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- 0.0 RCVD_IN_VALIDITY_CERTIFIED_BLOCKED RBL: ADMINISTRATOR NOTICE: The query to Validity was blocked. See https://knowledge.validity.com/hc/en-us/articles/20961730681243 for more information. [159.69.126.157 listed in sa-trusted.bondedsender.org] 0.0 RCVD_IN_VALIDITY_SAFE_BLOCKED RBL: ADMINISTRATOR NOTICE: The query to Validity was blocked. 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[159.69.126.157 listed in bl.score.senderscore.com] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-mtd" Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org The mmap() callbacks should not modify the struct bin_attribute passed as argument. Enforce this by marking the argument as const. As there are not many callback implementers perform this change throughout the tree at once. Signed-off-by: Thomas Weißschuh Acked-by: Andrew Donnellan # ocxl --- arch/alpha/kernel/pci-sysfs.c | 6 +++--- drivers/misc/ocxl/sysfs.c | 2 +- drivers/pci/p2pdma.c | 2 +- drivers/pci/pci-sysfs.c | 10 +++++----- drivers/platform/x86/intel/pmt/class.c | 2 +- drivers/uio/uio_hv_generic.c | 2 +- include/linux/sysfs.h | 2 +- 7 files changed, 13 insertions(+), 13 deletions(-) diff --git a/arch/alpha/kernel/pci-sysfs.c b/arch/alpha/kernel/pci-sysfs.c index 5808a66e2a81f7eba9a245fd6a343406a1ade87d..3048758304b57afa01ddeb6558c39bdb48c9a3f6 100644 --- a/arch/alpha/kernel/pci-sysfs.c +++ b/arch/alpha/kernel/pci-sysfs.c @@ -64,7 +64,7 @@ static int __pci_mmap_fits(struct pci_dev *pdev, int num, * Return: %0 on success, negative error code otherwise */ static int pci_mmap_resource(struct kobject *kobj, - struct bin_attribute *attr, + const struct bin_attribute *attr, struct vm_area_struct *vma, int sparse) { struct pci_dev *pdev = to_pci_dev(kobj_to_dev(kobj)); @@ -93,14 +93,14 @@ static int pci_mmap_resource(struct kobject *kobj, } static int pci_mmap_resource_sparse(struct file *filp, struct kobject *kobj, - struct bin_attribute *attr, + const struct bin_attribute *attr, struct vm_area_struct *vma) { return pci_mmap_resource(kobj, attr, vma, 1); } static int pci_mmap_resource_dense(struct file *filp, struct kobject *kobj, - struct bin_attribute *attr, + const struct bin_attribute *attr, struct vm_area_struct *vma) { return pci_mmap_resource(kobj, attr, vma, 0); diff --git a/drivers/misc/ocxl/sysfs.c b/drivers/misc/ocxl/sysfs.c index 405180d47d9bff0aaa7a736bb3fecfbe318db961..07520d6e6dc55702696b8656440914c379e6e27a 100644 --- a/drivers/misc/ocxl/sysfs.c +++ b/drivers/misc/ocxl/sysfs.c @@ -125,7 +125,7 @@ static const struct vm_operations_struct global_mmio_vmops = { }; static int global_mmio_mmap(struct file *filp, struct kobject *kobj, - struct bin_attribute *bin_attr, + const struct bin_attribute *bin_attr, struct vm_area_struct *vma) { struct ocxl_afu *afu = to_afu(kobj_to_dev(kobj)); diff --git a/drivers/pci/p2pdma.c b/drivers/pci/p2pdma.c index 4f47a13cb500ff5339cde426b6ccb020fcd74ae7..7abd4f546d3c071f31e622d881f5c5ac3e4de55e 100644 --- a/drivers/pci/p2pdma.c +++ b/drivers/pci/p2pdma.c @@ -90,7 +90,7 @@ static ssize_t published_show(struct device *dev, struct device_attribute *attr, static DEVICE_ATTR_RO(published); static int p2pmem_alloc_mmap(struct file *filp, struct kobject *kobj, - struct bin_attribute *attr, struct vm_area_struct *vma) + const struct bin_attribute *attr, struct vm_area_struct *vma) { struct pci_dev *pdev = to_pci_dev(kobj_to_dev(kobj)); size_t len = vma->vm_end - vma->vm_start; diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c index 13912940ed2bb66c0086e5bea9a3cb6417ac14dd..0ad3427228b12aa95325c6fc00e9686740559238 100644 --- a/drivers/pci/pci-sysfs.c +++ b/drivers/pci/pci-sysfs.c @@ -910,7 +910,7 @@ static ssize_t pci_write_legacy_io(struct file *filp, struct kobject *kobj, * memory space. */ static int pci_mmap_legacy_mem(struct file *filp, struct kobject *kobj, - struct bin_attribute *attr, + const struct bin_attribute *attr, struct vm_area_struct *vma) { struct pci_bus *bus = to_pci_bus(kobj_to_dev(kobj)); @@ -930,7 +930,7 @@ static int pci_mmap_legacy_mem(struct file *filp, struct kobject *kobj, * memory space. Returns -ENOSYS if the operation isn't supported */ static int pci_mmap_legacy_io(struct file *filp, struct kobject *kobj, - struct bin_attribute *attr, + const struct bin_attribute *attr, struct vm_area_struct *vma) { struct pci_bus *bus = to_pci_bus(kobj_to_dev(kobj)); @@ -1034,7 +1034,7 @@ void pci_remove_legacy_files(struct pci_bus *b) * * Use the regular PCI mapping routines to map a PCI resource into userspace. */ -static int pci_mmap_resource(struct kobject *kobj, struct bin_attribute *attr, +static int pci_mmap_resource(struct kobject *kobj, const struct bin_attribute *attr, struct vm_area_struct *vma, int write_combine) { struct pci_dev *pdev = to_pci_dev(kobj_to_dev(kobj)); @@ -1059,14 +1059,14 @@ static int pci_mmap_resource(struct kobject *kobj, struct bin_attribute *attr, } static int pci_mmap_resource_uc(struct file *filp, struct kobject *kobj, - struct bin_attribute *attr, + const struct bin_attribute *attr, struct vm_area_struct *vma) { return pci_mmap_resource(kobj, attr, vma, 0); } static int pci_mmap_resource_wc(struct file *filp, struct kobject *kobj, - struct bin_attribute *attr, + const struct bin_attribute *attr, struct vm_area_struct *vma) { return pci_mmap_resource(kobj, attr, vma, 1); diff --git a/drivers/platform/x86/intel/pmt/class.c b/drivers/platform/x86/intel/pmt/class.c index c04bb7f97a4db13268fc5697887951cf8f0f5a25..f9afa23e754b8b68bd59b72d6a72d26503a21f31 100644 --- a/drivers/platform/x86/intel/pmt/class.c +++ b/drivers/platform/x86/intel/pmt/class.c @@ -103,7 +103,7 @@ intel_pmt_read(struct file *filp, struct kobject *kobj, static int intel_pmt_mmap(struct file *filp, struct kobject *kobj, - struct bin_attribute *attr, struct vm_area_struct *vma) + const struct bin_attribute *attr, struct vm_area_struct *vma) { struct intel_pmt_entry *entry = container_of(attr, struct intel_pmt_entry, diff --git a/drivers/uio/uio_hv_generic.c b/drivers/uio/uio_hv_generic.c index 8704095994118c2660f345c504b5ea466d053efb..3976360d0096d6681faf88815cc6277fb76a1d9f 100644 --- a/drivers/uio/uio_hv_generic.c +++ b/drivers/uio/uio_hv_generic.c @@ -135,7 +135,7 @@ static void hv_uio_rescind(struct vmbus_channel *channel) * The ring buffer is allocated as contiguous memory by vmbus_open */ static int hv_uio_ring_mmap(struct file *filp, struct kobject *kobj, - struct bin_attribute *attr, + const struct bin_attribute *attr, struct vm_area_struct *vma) { struct vmbus_channel *channel diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h index d1b22d56198b55ee39fe4c4fc994f5b753641992..9fcdc8cd3118f359742bfd8b708d5c3eff511042 100644 --- a/include/linux/sysfs.h +++ b/include/linux/sysfs.h @@ -309,7 +309,7 @@ struct bin_attribute { char *, loff_t, size_t); loff_t (*llseek)(struct file *, struct kobject *, struct bin_attribute *, loff_t, int); - int (*mmap)(struct file *, struct kobject *, struct bin_attribute *attr, + int (*mmap)(struct file *, struct kobject *, const struct bin_attribute *attr, struct vm_area_struct *vma); };