From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Thu, 27 Nov 2025 10:20:06 +0100 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1vOYAY-005NXH-1j for lore@lore.pengutronix.de; Thu, 27 Nov 2025 10:20:06 +0100 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1vOYAX-0003Wd-FN for lore@pengutronix.de; Thu, 27 Nov 2025 10:20:06 +0100 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:To:In-Reply-To:References: Message-Id:Content-Transfer-Encoding:Content-Type:MIME-Version:Subject:Date: From:Reply-To:Cc:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=uDhX8lAbP7VwCJau12p3iTNiJoQNd5ZbiJemBctGcZk=; b=EJHLxTiZW4BF4mPs/f3wOVaecK 7yWN3lMcCUeraGjnSWrtryoXj7z9Il4W3SDRLk+/wo6wVHzhMsRoBRQhcF5C1FgRYSXqTT4LOCt8B iOb7SRpYtzaGV2DQTuRFH2TF/j9GqJtj0QSNtc8naxPEXhbmXJax/qV2kk7KfPGu9TLEnEviESMeT U82etwAxpLasE1+sdmTZbJMRJvEvg63yvWS7qNudFKKG3ftmlZZMQr9gRrPGFgNXOZaOG3M4vlHer Mf/sihnhc4CNNICi5LAQzbke7K9Q9nQVf5O5w0LSccw8MFk2le8eQUBdJ4PmHqW1KpxbxTID7m9CJ oy+vWcSw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vOYA0-0000000GGiR-0BBy; Thu, 27 Nov 2025 09:19:32 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vOY9v-0000000GGfE-3TyI for barebox@lists.infradead.org; Thu, 27 Nov 2025 09:19:30 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1vOY9u-00035G-8E; Thu, 27 Nov 2025 10:19:26 +0100 Received: from dude02.red.stw.pengutronix.de ([2a0a:edc0:0:1101:1d::28]) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1vOY9t-002lPD-32; Thu, 27 Nov 2025 10:19:25 +0100 Received: from localhost ([::1] helo=dude02.red.stw.pengutronix.de) by dude02.red.stw.pengutronix.de with esmtp (Exim 4.98.2) (envelope-from ) id 1vOY9u-00000000tc4-1C75; Thu, 27 Nov 2025 10:19:25 +0100 From: Sascha Hauer Date: Thu, 27 Nov 2025 10:19:25 +0100 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20251127-devfs-v1-3-4aff12818757@pengutronix.de> References: <20251127-devfs-v1-0-4aff12818757@pengutronix.de> In-Reply-To: <20251127-devfs-v1-0-4aff12818757@pengutronix.de> To: BAREBOX X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1764235165; l=1458; i=s.hauer@pengutronix.de; s=20230412; h=from:subject:message-id; bh=YdO8m4WLx/2JYZCRYzN7vzg4O7CGBwaUENqI9nBYj/Y=; b=4Fr9U4XuzZYcuGw2/AeOiOLQZAnMtv2uNkxkX1M8dCgwQVm2RfpRAAw6P6iIKENh27dk92BfJ 1I6X2ecBxSNDJYLcRScN3Q8hJKRbfiayCNGeuDqMLucZbaxvggz/Niz X-Developer-Key: i=s.hauer@pengutronix.de; a=ed25519; pk=4kuc9ocmECiBJKWxYgqyhtZOHj5AWi7+d0n/UjhkwTg= X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251127_011927_876203_B9834F7C X-CRM114-Status: GOOD ( 10.34 ) X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.whiteo.stw.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-4.1 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: [PATCH 03/10] fs: ramfs: add device file support X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.whiteo.stw.pengutronix.de) Implement the mknod hook in ramfs for creating device special files. Signed-off-by: Sascha Hauer --- fs/ramfs.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/fs/ramfs.c b/fs/ramfs.c index 1caace0183a58e8a07001eb6ce9df8ea1895ac0b..d86bf6144e8485269c589ba0024377f9852a8eaa 100644 --- a/fs/ramfs.c +++ b/fs/ramfs.c @@ -89,6 +89,9 @@ static struct inode *ramfs_get_inode(struct super_block *sb, const struct inode case S_IFLNK: inode->i_op = &ramfs_symlink_inode_operations; break; + case S_IFBLK: + case S_IFCHR: + break; } return inode; @@ -149,6 +152,20 @@ static int ramfs_create(struct inode *dir, struct dentry *dentry, umode_t mode) return ramfs_mknod(dir, dentry, mode | S_IFREG); } +static int __ramfs_mknod(struct inode *dir,struct dentry *dentry, umode_t mode, + const char *cdevname) +{ + int ret; + + ret = ramfs_mknod(dir, dentry, mode); + if (ret) + return ret; + + init_special_inode(dentry->d_inode, mode, cdevname); + + return 0; +} + static int ramfs_symlink(struct inode *dir, struct dentry *dentry, const char *symname) { @@ -196,6 +213,7 @@ static const struct inode_operations ramfs_dir_inode_operations = .unlink = simple_unlink, .create = ramfs_create, .tmpfile = ramfs_tmpfile, + .mknod = __ramfs_mknod, }; static struct ramfs_chunk *ramfs_find_chunk(struct ramfs_inode *node, -- 2.47.3