Date: Sun, 6 Oct 2002 23:25:27 -0700 (PDT) From: Poul-Henning Kamp <phk@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/sys errno.h src/sys/geom geom.h geom_dev.c geom_disk.c Message-ID: <200210070625.g976PRIj067380@freefall.freebsd.org>
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phk 2002/10/06 23:25:27 PDT
Modified files:
sys/sys errno.h
sys/geom geom.h geom_dev.c geom_disk.c
Log:
Copyin and copyout are only possible from a process-native thread,
and therefore we need a way for ioctl handlers to run in that thread
in GEOM. Rather than invent a complicated registration system to
recognize which ioctl handler to use for a given ioctl, we still
schedule all ioctls down the tree as bio transactions but add a
special return code that means "call me directly" and have the
geom_dev layer do that.
Use this for all ioctls that make it as far as a diskdriver to
avoid any backwards compatibility problems.
Requested by: scottl
Sponsored by: DARPA & NAI Labs
Revision Changes Path
1.27 +7 -0 src/sys/geom/geom.h
1.25 +10 -18 src/sys/geom/geom_dev.c
1.23 +8 -24 src/sys/geom/geom_disk.c
1.25 +1 -0 src/sys/sys/errno.h
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