From fe0da9c09b2dc448ff781d1426ecb36d145ce51b Mon Sep 17 00:00:00 2001
From: Amir Goldstein <amir73il@gmail.com>
Date: Wed, 5 Jun 2019 08:04:51 -0700
Subject: [PATCH] fuse: copy_file_range needs to strip setuid bits and update
timestamps
Like ->write_iter(), we update mtime and strip setuid of dst file before
copy and like ->read_iter(), we update atime of src file after copy.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Acked-by: Miklos Szeredi <miklos@szeredi.hu>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
fs/fuse/file.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index dc342edb399ba..5ae2828beb003 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -3155,6 +3155,10 @@ static ssize_t __fuse_copy_file_range(struct file *file_in, loff_t pos_in,
inode_lock(inode_out);
+ err = file_modified(file_out);
+ if (err)
+ goto out;
+
if (fc->writeback_cache) {
err = fuse_writeback_range(inode_out, pos_out, pos_out + len);
if (err)
@@ -3193,6 +3197,7 @@ static ssize_t __fuse_copy_file_range(struct file *file_in, loff_t pos_in,
clear_bit(FUSE_I_SIZE_UNSTABLE, &fi_out->state);
inode_unlock(inode_out);
+ file_accessed(file_in);
return err;
}
--
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