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fuse: copy_file_range needs to strip setuid bits and update timestamps

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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>
This commit is contained in:
Amir Goldstein 2019-06-05 08:04:51 -07:00 committed by Darrick J. Wong
parent 5dae222a5f
commit fe0da9c09b
1 changed files with 5 additions and 0 deletions
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5
fs/fuse/file.c
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@ -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 @@ out:
clear_bit(FUSE_I_SIZE_UNSTABLE, &fi_out->state);
inode_unlock(inode_out);
file_accessed(file_in);
return err;
}