> /devices/[EMAIL PROTECTED],0/pci8086,[EMAIL PROTECTED]/pci1179,[EMAIL
> PROTECTED],3/[EMAIL PROTECTED]/[EMAIL PROTECTED],0:u,raw
>
> Now, what I'm finding is that if I try to open one of these nodes right
> after attach, open(2) returns ENOENT.
I would suggest dtrace. Something like:
syscall::open:entry /execname == "your-program-that-opens-node"/
{ self->picked = 1; }
syscall::open:return /self->picked/
{ self->picked = 0; }
fbt::: /self->picked/ { ... print args and return values ... }
The callstack for attach-on-open should look something like:
open
vn_openat
lookupnameat
VOP_LOOKUP/devfs_lookup
dv_find
ndi_devi_config_one
your nexus's bus_config
devi_config_one
devi_attach_node
i_ddi_attachchild
i_ndi_config_node
state machine goes from DS_PROTO to DS_READY,
triggering attach(9e) along the way
The trace will show you where it bails out.
-Artem
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