Bryan Kadzban wrote:
Michal Soltys wrote:
BUS=="usb", ACTION=="add", SYSFS{idVendor}=="156c",
SYSFS{idProduct}=="0101", ENV{DEVICE}!="", \
NAME="dsiproII" SYMLINK+="dsiproII.%n" MODE="0666"
Hmm, is it exactly as in your files ? There's missing comma between
SYMLINK and MODE, both in single and double rule - maybe that's the
culprit.
And also between NAME and SYMLINK in this rule -- I suspect there's no
symlink anymore either with this rule. :-)
That is exactly how it is. And there is a symlink. But, point taken,
I've got an (at least technically) invalid rule that may not be working
as it is supposed to.
So I fixed the line to include the comma:
# 1. Pre-renumeration IDs
# Meade DSI Pro II
BUS=="usb", ACTION=="add", SYSFS{idVendor}=="156c",
SYSFS{idProduct}=="0100", ENV{DEVICE}!="", \
RUN+="/sbin/fxload -t fx2 -D $ENV{DEVICE} -I
/lib/firmware/meade-dsiproII.hex"
# 2. Post-renumeration IDs
# Meade DSI Pro II
BUS=="usb", ACTION=="add", SYSFS{idVendor}=="156c",
SYSFS{idProduct}=="0101", ENV{DEVICE}!="", \
SYMLINK+="dsiproII.%n", MODE="0666"
Same symptons, permissions on /dev/bus/... device are not set:
[root@aristarchus src]# ls -l /dev/dsi*
lrwxrwxrwx 1 root root 15 2008-06-01 13:25 /dev/dsiproII.5 ->
bus/usb/001/022
[root@aristarchus src]# ls -lL /dev/dsi*
crw-r--r-- 1 root root 189, 21 2008-06-01 13:25 /dev/dsiproII.5
With this rule:
# 1. Pre-renumeration IDs
# Meade DSI Pro II
BUS=="usb", ACTION=="add", SYSFS{idVendor}=="156c",
SYSFS{idProduct}=="0100", ENV{DEVICE}!="", \
RUN+="/sbin/fxload -t fx2 -D $ENV{DEVICE} -I
/lib/firmware/meade-dsiproII.hex"
# 2. Post-renumeration IDs
# Meade DSI Pro II
BUS=="usb", ACTION=="add", SYSFS{idVendor}=="156c",
SYSFS{idProduct}=="0101", ENV{DEVICE}!="", \
NAME="dsiproII", SYMLINK+="dsiproII.%n", MODE="0666"
I end up with the devices below, but my code cannot find the device when
scanning all buses/devices.
[root@aristarchus src]# ls -lL /dev/dsi*
crw-rw-rw- 1 root root 189, 19 2008-06-01 13:22 /dev/dsiproII
crw-rw-rw- 1 root root 189, 19 2008-06-01 13:22 /dev/dsiproII.5
[root@aristarchus src]# ./dumper
No suitable devices found, aborting
(Also, FWIW: setting NAME means that the device node will not be created
at its default location. NAME moves the node; it doesn't copy it or
anything like that. That's why you don't get the /dev/bus/usb/*/* node
when this rule is present: because the NAME is set. SYMLINK (as in your
first rule) is usually a better way to handle this.)
I can live with this and just use my first rule if I can get the
permissions fixed. My other alternative for permission is to use a pam
rule to change the owner to the console user. But I cant figure out how
to set up SElinux to allow that one when in enforcing mode.
And I can live with the second ruleset if I can figure out how to open a
device that I didn't find by iterating over bus->devices. What is the
way to set up a usb device that isn't in the usual location. My code
fragment to find the device is below. This doesn't work when I use
NAME. How do I use usb_open() directly on a device node?
int main(int argc, char **argv)
{
const int SIZE = 4096;
char *data = new char[SIZE];
usb_init();
usb_find_busses();
usb_find_devices();
// This searches for the first initialized Meade DSI Pro II
struct usb_device *dev = 0;
struct usb_dev_handle *handle = 0;
for (struct usb_bus *bus = usb_get_busses(); bus != 0; bus =
bus->next) {
for (dev = bus->devices; dev != 0; dev = dev->next) {
if (( (dev->descriptor.idVendor = 0x156c))
&& (( (dev->descriptor.idProduct == 0x0101))
|| (0 == 1))) {
fprintf(stderr, "Found device %04x:%04x\n",
dev->descriptor.idVendor, dev->descriptor.idProduct);
handle = usb_open(dev);
// XXX: The libusb docs say something about claiming the
// interface. I have no idea what that means and this is
// working.
if (handle == 0) {
fprintf(stderr, "Failed to open device, aborting\n");
exit(1);
}
}
break;
}
if (handle != 0)
break;
}
if (handle == 0) {
fprintf(stderr, "No suitable devices found, aborting\n");
exit(1);
}
...
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