On 23.12.2017 19:01, Peter Tribble wrote:
On Sat, Dec 23, 2017 at 11:00 AM, Alexander Pyhalov <[email protected]> wrote:
Hello.
I'm trying to get a list of acpi batteries and ac devices on the
notebook.
I see them in /devices/pseudo:
$ ls -ld /devices/pseudo/acpi_drv\@0*
drwxr-xr-x 2 root sys 2 Dec 23 2014 /devices/pseudo/acpi_drv@0
crw-rw-rw- 1 root sys 3, 512 Dec 23 11:32
/devices/pseudo/acpi_drv@0:ac0
crw-rw-rw- 1 root sys 3, 256 Dec 23 11:32
/devices/pseudo/acpi_drv@0:bat
tery0
crw-rw-rw- 1 root sys 3, 1280 Dec 23 11:34
/devices/pseudo/acpi_drv@0:hot
key
But when I try to do it in C, I fail. The attached program shows only
In acpi_drv
/pseudo/acpi_drv@0
is_laptop=0
(no /dev/pseudo/acpi_drv@0:* as I would expected). What am I doing
wrong?
That I have no idea, but I get the same result.
Basically it's not getting into the minor loop. However,
di_minor_next()
returns
DI_MINOR_NIL on failure. The failure the code is looking for is when it
hits
the end of the node list, but if I print out errno then I see 48, which
is
ENOTSUP,
which according to the man page means "Minor node information is not
available
in snapshot." Which begs the question, how to ensure the device
snapshot
contains minor node information?
Thanks, that's it.
I had to do di_init("/",DINFOSUBTREE|DINFOMINOR), not just
di_init("/",DINFOSUBTREE).
---
System Administrator of Southern Federal University Computer Center
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