在 2008-3-19，上午2:09， J Duff 写道：
In response to Garrett's reply...
My guess is that you should investigate
the ldi interfaces in sys/sunldi.h, but without more information
about
why you think you need the dev_t, its hard to be sure. (dev_t's are
supposed to be mostly a private implementation detail.)
I'm actually trying to open a disk using ldi_open_by_name or
ldi_open_by_dev. All I have is the device's path. Both open calls
require an dev_indent_t as an input argument. I can get the
dev_ident_t using ldi_ident_from_dev provided I have the dev_t which
I don't. This is why I'm trying to get the dev_t from the path. See
code below:
ldi_ident_from_major(major_t major, ldi_ident_t *lip);
Or consolidation private interfaces:
ldi_ident_from_mod(struct modlinkage *modlp, ldi_ident_t *lip)
ldi_ident_from_anon()
BTW, I was wondering why you cannot get a dev_t or dev_info pointer in
your driver ?
-minskey
/* make a handle to be initialized by ldi_open_by_name */
ldi_handle_t raw_handle;
/* get the identity of the raw disk. */
ldi_ident_t raw_ident;
dev_t raw_dev; /* --HOW DO I SPECIFY THIS?-- */
ldi_ident_from_dev(raw_dev, &raw_ident);
/* open the raw disk */
int val = ldi_open_by_name("/dev/dsk/c4t20d0s0", FWRITE|FREAD|FEXCL,
kcred, &raw_handle, raw_ident);
I would be very happy to open the disk using just the path, but I
don't see how to do this. Is it right in front of me and I don't see
it?
Any help would be greatly appreciated.
Duff
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