Date: Wed, 07 Sep 2011 12:12:03 -0400 From: "Dieter BSD" <dieterbsd@engineer.com> To: freebsd-firewire@freebsd.org Subject: Re: fwcontrol -R is broken Message-ID: <20110907161204.43270@gmx.com>
next in thread | raw e-mail | index | archive | help
Hi Sean, > Please try this patch sooner rather than later. I'd like to get it > patched pre-9.0 at a minimum if this resolves the issues. I added your patch to the 8.2 sources and compiled it in a 7.1 chroot in hopes of avoiding a kernel panic. It printed out some garbage. I looked at the code a bit and added the following: char *recv_data = NULL; char *send_data = NULL; + /* debug */ + snprintf(devbase, sizeof(devbase), "ERROR: variable devbase is uninitialized "); + if (argc < 2) { for (current_board = 0; current_board < MAX_BOARDS; current_board++) { snprintf(devbase, sizeof(devbase), "%s%d.0", device_string, current_board); Now I get: ./fwcontrol -R /tmp/foo.dv fwcontrol: main: Error opening firewire controller #0 ERROR: variable devbase is uninitialized in recv_data detect: No such file or directory Note: I didn't have to turn on the camcorder to get this far. For full testing it might be possible to connect two controllers together and do fwcontrol -S on one and fwcontrol -R on the other, avoiding the need for a camcorder or similar DV device. ----- IIRC someone changed fwcontrol awhile back so that the order of arguments isn't supposed to matter anymore? If so it isn't working: ./fwcontrol -u 0 -R /tmp/foo.dv fwcontrol: main: Error opening firewire controller #0 ERROR: variable devbase is uninitialized in recv_data detect: No such file or directory ./fwcontrol -R /tmp/foo.dv -u 0 fwcontrol: detect_recv_fn: error reading from device: Resource temporarily unavailable The "error reading from device" is probably due to the camcorder not being on. Rearranging the args got it working a few days ago. But this is just a FYI, not a suggestion that someone wade into improving fwcontrol's arg handling. I can live with having to arrange the args in a particular order. I can live with having to compile fwcontrol in a 7.1 chroot. But kern/113785 is a big problem with no workaround. :-( So 113785 is the bug I really need a fix for.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20110907161204.43270>