From: Xiao Yang Date: Mon, 27 Jan 2020 19:02:24 +0000 Subject: [PATCH] virtiofsd/passthrough_ll: Pass errno to fuse_reply_err() lo_copy_file_range() passes -errno to fuse_reply_err() and then fuse_reply_err() changes it to errno again, so that subsequent fuse_send_reply_iov_nofree() catches the wrong errno.(i.e. reports "fuse: bad error value: ..."). Make fuse_send_reply_iov_nofree() accept the correct -errno by passing errno directly in lo_copy_file_range(). Signed-off-by: Xiao Yang Reviewed-by: Eryu Guan dgilbert: Sent upstream and now Merged as aa1185e153f774f1df65 Signed-off-by: Dr. David Alan Gilbert (cherry picked from commit a931b6861e59c78d861017e9c6a9c161ff49a163) --- tools/virtiofsd/passthrough_ll.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/virtiofsd/passthrough_ll.c b/tools/virtiofsd/passthrough_ll.c index fc15d61510..e6f2399efc 100644 --- a/tools/virtiofsd/passthrough_ll.c +++ b/tools/virtiofsd/passthrough_ll.c @@ -2441,7 +2441,7 @@ static void lo_copy_file_range(fuse_req_t req, fuse_ino_t ino_in, off_t off_in, res = copy_file_range(in_fd, &off_in, out_fd, &off_out, len, flags); if (res < 0) { - fuse_reply_err(req, -errno); + fuse_reply_err(req, errno); } else { fuse_reply_write(req, res); }