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From: Sascha Hauer <s.hauer@pengutronix.de>
To: BAREBOX <barebox@lists.infradead.org>
Subject: [PATCH 07/10] fs: include cdevname in struct stat
Date: Thu, 27 Nov 2025 10:19:29 +0100	[thread overview]
Message-ID: <20251127-devfs-v1-7-4aff12818757@pengutronix.de> (raw)
In-Reply-To: <20251127-devfs-v1-0-4aff12818757@pengutronix.de>

In Linux struct stat contains the major/minor numbers of the underlying
device, consequently we put the cdev name into struct stat.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 fs/fs.c              | 1 +
 include/linux/stat.h | 1 +
 2 files changed, 2 insertions(+)

diff --git a/fs/fs.c b/fs/fs.c
index b96393e2301e2d8a622e319e0033953399b4e989..41cdaf5070798388aa989d16e7bf2ace081b4a2b 100644
--- a/fs/fs.c
+++ b/fs/fs.c
@@ -1117,6 +1117,7 @@ static void stat_inode(struct inode *inode, struct stat *s)
 	s->st_mode = inode->i_mode;
 	s->st_uid = inode->i_uid;
 	s->st_gid = inode->i_gid;
+	s->st_cdevname = inode->cdevname;
 }
 
 int fstat(int fd, struct stat *s)
diff --git a/include/linux/stat.h b/include/linux/stat.h
index 6ee05b52873f47e5d17a4387829187512be29ea8..84b6484a1f2149d1f2d770f0f11bf0ae0ef63744 100644
--- a/include/linux/stat.h
+++ b/include/linux/stat.h
@@ -55,6 +55,7 @@ struct stat {
 	unsigned short st_mode;
 	unsigned short st_uid;
 	unsigned short st_gid;
+	const char *st_cdevname; /* barebox specific */
 	loff_t  st_size;
 };
 

-- 
2.47.3




  parent reply	other threads:[~2025-11-27  9:20 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-11-27  9:19 [PATCH 00/10] fs: Use device special nodes for devfs Sascha Hauer
2025-11-27  9:19 ` [PATCH 01/10] fs: implement mknod Sascha Hauer
2025-11-27  9:19 ` [PATCH 02/10] commands: add mknod command Sascha Hauer
2025-11-27  9:19 ` [PATCH 03/10] fs: ramfs: add device file support Sascha Hauer
2025-11-27  9:19 ` [PATCH 04/10] cdev: add cdev_size() helper Sascha Hauer
2025-11-27  9:19 ` [PATCH 05/10] fs: fix st_size for device files Sascha Hauer
2025-11-27  9:19 ` [PATCH 06/10] fs: retire devfs as filesystem Sascha Hauer
2025-11-27  9:19 ` Sascha Hauer [this message]
2025-11-27  9:19 ` [PATCH 08/10] fs: stat_print: get cdevname from stat Sascha Hauer
2025-11-27  9:19 ` [PATCH 09/10] fs: replace cdev links with aliases Sascha Hauer
2025-11-27  9:19 ` [PATCH 10/10] ls: use ~0 for FILE_SIZE_STREAM Sascha Hauer

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