Date: Sat, 7 Apr 2007 13:12:49 -0700 (PDT) From: mjacob@freebsd.org To: Scott Long <scottl@freebsd.org> Cc: cvs-src@freebsd.org, src-committers@freebsd.org, cvs-all@freebsd.org Subject: Re: cvs commit: src/sys/cam/scsi scsi_sg.c scsi_sg.h src/sys/modules/cam Makefile src/sys/conf NOTES files src/sys/compat/linux linux_ioctl.c linux_ioctl.h Message-ID: <20070407131228.L71232@ns1.feral.com> In-Reply-To: <200704071940.l37Jew2t013708@repoman.freebsd.org> References: <200704071940.l37Jew2t013708@repoman.freebsd.org>
next in thread | previous in thread | raw e-mail | index | archive | help
Cool- does this mean we should commit sg3_utils to ports then? On Sat, 7 Apr 2007, Scott Long wrote: > scottl 2007-04-07 19:40:58 UTC > > FreeBSD src repository > > Modified files: > sys/modules/cam Makefile > sys/conf files NOTES > sys/compat/linux linux_ioctl.c linux_ioctl.h > Added files: > sys/cam/scsi scsi_sg.c scsi_sg.h > Log: > Add the CAM 'SG' peripheral device. This device implements a subset of the > Linux SCSI SG passthrough device API. The intention is to allow for both > running of Linux apps that want to talk to /dev/sg* nodes, and to facilitate > porting of apps from Linux to FreeBSD. As such, both native and linuxolator > entry points and definitions are provided. > > Caveats: > - This does not support the procfs and sysfs nodes that the Linux SG > driver provides. Some Linux apps may rely on these for operation, > others may only use them for informational purposes. > - More ioctls need to be implemented. > - Linux uses a naming scheme of "sg[a-z]" for devices, while FreeBSD uses a > scheme of "sg[0-9]". Devfs aliasis (symlinks) are automatically created > to link the two together. However, tools like camcontrol only see the > native names. > - Some operations were originally designed to return byte counts or other > data directly as the syscall return value. The linuxolator doesn't appear > to support this well, so this driver just punts for these cases. > > Now that the driver is in place, others are welcome to add missing > functionality. Thanks to Roman Divacky for pushing this work along. > > Revision Changes Path > 1.1 +987 -0 src/sys/cam/scsi/scsi_sg.c (new) > 1.1 +139 -0 src/sys/cam/scsi/scsi_sg.h (new) > 1.138 +27 -0 src/sys/compat/linux/linux_ioctl.c > 1.25 +34 -0 src/sys/compat/linux/linux_ioctl.h > 1.1419 +5 -0 src/sys/conf/NOTES > 1.1191 +1 -0 src/sys/conf/files > 1.15 +1 -0 src/sys/modules/cam/Makefile >
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20070407131228.L71232>