On Thu, 24 Sep 2009 15:17:25 +1000 ronnie sahlberg <ronniesahlberg@xxxxxxxxx> wrote: > >> Frustration: The dvd/cd iso feature appears to work with 'simple' CD's only. > >> More advanced UDF or multi-session CDs (like recent Distributions of > >> Microsoft OS/Development tools) appear to not be supported. > > > > I'm not familiar with this area so I CC'ed Ronnie Sahlberg, who wrote > > that part. > > > > That is true. The current implementation only emulates single-session disks. > It does support writeable single-session disks, i.e. that you can > "burn" one of these DVD's but > I never implemented multi-session. > > > BTW, you can't do that even with IET, right? > > That is true. IET only supported single-session disks as well. I.e. > plain ISO images. Thanks for the explanation. > I do think it would be worth it to eventually replace mmc.c with cdemu > but it would be nice to do so without losing functionality. Yeah, agreed. losing the existing functionality is not nice. > I think it would be quite a lot of work but worthwhile > 1, add emulation of writing to a dvd to cdemu. This is not that very > hard, at least if you only aim to support to burning to single-session > dvds. > 2, should probably work with the cdemu people and break > cdemud-device.c out into a separate link library that tgtd could link > to. > (maybe keep mmc.c still around as a last resort and use it if > cdemud-device.a is not available?) > 3, rework the public api in cdemud-device.c to remove exposing the > glib/dbus dependencies and make the exposed api only use posix types. > (I think one very attractive feature of the tgtd codebase is that it > has so few dependencies on headers from other packages) > > > 1 is only important if we want to keep the "tgtd can burn to emulated > blank disks" feature. > 2 would open up code sharing and reuse between cdemu and tgtd, and > other projects that want to access a scsi mmc emulation library. > 3 is only my personal view. I really like that tgtd does not depend on > glib or other external packages. Yeah, agreed. cdemu is released under GPL. I prefer just exploiting (or stealing) their code. I have no time to work on multi-session support but patches are very welcome. Thanks, -- To unsubscribe from this list: send the line "unsubscribe stgt" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
