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Fix udev_rules_apply_format() to give error messages for unknown
format elements and pass such elements to the output string
unmodified.
When truncating the substitution string to the length specified in the
format string, head[len] = '\0' could write outside the buffer if that
length was too large.
This scheme is more consistent and makes it obvious if a match happens
against the event device only, or the full chain of parent devices.
The old key names are now:
BUS -> SUBSYSTEMS
ID -> KERNELS
SYSFS -> ATTRS
DRIVER -> DRIVERS
Match keys for the event device:
KERNEL
SUBSYSTEM
ATTR
DRIVER (in a future release, for now the same as DRIVERS)
Match keys for all devices along the parent device chain:
KERNELS
SUBSYSTEMS
ATTRS
DRIVERS
ID, BUS, SYSFS are no longer mentioned in the man page but still work.
DRIVER must be converted to DRIVERS to match the new scheme. For now,
an error is logged, if DRIVER is used. In a future release, the DRIVER
key behaviour will change.
The stricter parent logic broke: BUS=="ide", SYSFS{removable}=="1", ...
cause removable is on the block device, which isn't a ide device.
Just look for matching attributes at the device and the selected parent
device at the same time now.
Signed-off-by: Kay Sievers <kay.sievers@suse.de>
Apply substitutions before running a program, not while the rule
is parsed. It allows to use environment variables set during rule
processing as command arguments.
We never used any of the libsysfs convenience features. Here we replace
it completely with 300 lines of code, which are much simpler and a bit
faster cause udev(d) does not open any syfs file for a simple event which
does not need any parent device information.
Signed-off-by: Kay Sievers <kay.sievers@suse.de>
All udev state is kept in /$udev_root/.udev/ now. No option to
configure that anymore, it will always be there.
Signed-off-by: Kay Sievers <kay.sievers@suse.de>
Most of the issues are fixed with the kernel we depend on, for the
remaing ones see the RELEASE-NOTES for a special rule to add.
Signed-off-by: Kay Sievers <kay.sievers@suse.de>
