Commit fe0da9c0 authored Jun 05, 2019 by Amir Goldstein Committed by Darrick J. Wong Jun 09, 2019

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>

parent 5dae222a

fs/fuse/file.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -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;
		}

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