linux-kernel - [PATCH 3/3 linux-next] fs/affs: stat: return block number

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Message-Id: <20170515185730.5055-1-fabf@skynet.be>
Date:   Mon, 15 May 2017 20:57:30 +0200
From:   Fabian Frederick <fabf@...net.be>
To:     Alexander Viro <viro@...iv.linux.org.uk>
Cc:     linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        fabf@...net.be
Subject: [PATCH 3/3 linux-next] fs/affs: stat: return block number

stat <filename> doesn't give any block number
as it's filesystem specific. Add getattr wrapper to return
i_blkcnt calculated during affs_iget()

Signed-off-by: Fabian Frederick <fabf@...net.be>
---
 fs/affs/affs.h  |  2 ++
 fs/affs/file.c  |  1 +
 fs/affs/inode.c | 11 +++++++++++
 3 files changed, 14 insertions(+)

diff --git a/fs/affs/affs.h b/fs/affs/affs.h
index fd99f28..a2151e9 100644
--- a/fs/affs/affs.h
+++ b/fs/affs/affs.h
@@ -180,6 +180,8 @@ extern int	affs_rename2(struct inode *old_dir, struct dentry *old_dentry,
 /* inode.c */
 
 extern struct inode *affs_new_inode(struct inode *dir);
+extern int	affs_getattr(const struct path *path, struct kstat *stat,
+			     u32 request_mask, unsigned int flags);
 extern int	affs_notify_change(struct dentry *dentry, struct iattr *attr);
 extern void	affs_evict_inode(struct inode *inode);
 extern struct inode *affs_iget(struct super_block *sb, unsigned long ino);
diff --git a/fs/affs/file.c b/fs/affs/file.c
index 196ee7f..b331abb 100644
--- a/fs/affs/file.c
+++ b/fs/affs/file.c
@@ -979,4 +979,5 @@ const struct file_operations affs_file_operations = {
 
 const struct inode_operations affs_file_inode_operations = {
 	.setattr	= affs_notify_change,
+	.getattr	= affs_getattr,
 };
diff --git a/fs/affs/inode.c b/fs/affs/inode.c
index fd4ef3c..76fb281 100644
--- a/fs/affs/inode.c
+++ b/fs/affs/inode.c
@@ -214,6 +214,17 @@ affs_write_inode(struct inode *inode, struct writeback_control *wbc)
 	return 0;
 }
 
+int affs_getattr(const struct path *path, struct kstat *stat,
+		 u32 request_mask, unsigned int flags)
+{
+	struct inode *inode = d_inode(path->dentry);
+
+	generic_fillattr(inode, stat);
+	stat->blocks = AFFS_I(inode)->i_blkcnt;
+
+	return 0;
+}
+
 int
 affs_notify_change(struct dentry *dentry, struct iattr *attr)
 {
-- 
2.9.3