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The option "-s" will get information about the major/minor,
the physical device, the bus value and the driver from sysfs for
all class and block devices:
kay@pim udev.kay]$ ./udevinfo -s
DEVPATH '/sys/block/sda'
SUBSYSTEM 'block'
NAME 'sda'
MAJORMINOR '8:0'
PHYSDEVPATH '/sys/devices/pci0000:00/0000:00:1d.7/usb1/1-3/1-3:1.0/host2/target2:0:0/2:0:0:0'
PHYSDEVPATHBUS 'scsi'
DRIVER 'sd'
DEVPATH '/sys/class/input/mice'
SUBSYSTEM 'input'
NAME 'mice'
MAJORMINOR '13:63'
DEVPATH '/sys/class/input/mouse0'
SUBSYSTEM 'input'
NAME 'mouse0'
MAJORMINOR '13:32'
...
This makes the udev operation completely lockless by storing a
file for every node in /dev/.udevdb/* This solved the problem
with deadlocking concurrent udev processes waiting for each other
to release the file lock under heavy load.
Here I try to cleanup our various multifield iteration over the strings.
Inspired by our nice list.h we now have a macro to iterate over the string
and process the parts of it:
It makes the code more readable and we don't change the string while we
process it like the former strsep() does.
Example:
foreach_strpart(dev->symlink, " ", pos, len) {
if (strncmp(&dev->symlink[pos], find_name, len) != 0)
continue;
...
}
For the callout part selector %c{2} we separate now not only by space but
also newline and return characters, cause some programs may give multiline
values back. A possible RESULT match must contain wildcards for these
characters.
Also a bug in the recent udevinfo symlink query feature is fixed.
Thanks to Olaf Hering <olh@suse.de> for this patch. It's possible now to
feed the -n option of udevinfo with a symlink.
I've also added a 'all' attribute, but no more text, it's all in the
included man page :)
Here we switch the configs and man pages to the new attribute syntax.
Also the 'partition trick' is mentioned in udev.8
I think it's more clear visible now, that inside the brackets are user
supplied values used and not some magic keys handled:
'SYSFS_dev' is now 'SYSFS{dev}'
The old syntax is still supported.
