From ba1e23916c436c106d106479d222c01c78ab48cc Mon Sep 17 00:00:00 2001 From: phk Date: Wed, 12 Feb 2003 09:48:27 +0000 Subject: Implement a handle for efficient implementation of perforations in lower extremities. Setting bit 4 in debugflags (sysctl kern.geom.debugflags=16) will allow any open to succeed on rank#1 providers. This will generally correspond to the physical disk devices: ad0, da0, md0 etc. This fundamentally violates the mechanics of GEOMs autoconfiguration, and is only provided as a debugging facility, so obviously error reports on GEOM where this bit is or has been set will not be accepted. --- sys/geom/geom_subr.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) (limited to 'sys/geom/geom_subr.c') diff --git a/sys/geom/geom_subr.c b/sys/geom/geom_subr.c index 237e199..e2209fc 100644 --- a/sys/geom/geom_subr.c +++ b/sys/geom/geom_subr.c @@ -418,14 +418,17 @@ g_access_rel(struct g_consumer *cp, int dcr, int dcw, int dce) pp->acr, pp->acw, pp->ace, pp, pp->name); + /* If foot-shooting is enabled, any open on rank#1 is OK */ + if ((g_debugflags & 16) && pp->geom->rank == 1) + ; /* If we try exclusive but already write: fail */ - if (dce > 0 && pw > 0) + else if (dce > 0 && pw > 0) return (EPERM); /* If we try write but already exclusive: fail */ - if (dcw > 0 && pe > 0) + else if (dcw > 0 && pe > 0) return (EPERM); /* If we try to open more but provider is error'ed: fail */ - if ((dcr > 0 || dcw > 0 || dce > 0) && pp->error != 0) + else if ((dcr > 0 || dcw > 0 || dce > 0) && pp->error != 0) return (pp->error); /* Ok then... */ -- cgit v1.1