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No device node or symlink can have other characters as plain
readable ascii or valid utf8. The /dev/disk/by-label/* symlinks
can no longer contain weird stuff read from untrusted sources.
Signed-off-by: Kay Sievers <kay.sievers@suse.de>
We will not support any other character encoding than plain ascii
or utf8 for volume labels. All invalid utf8 and non-ascii characters
are substituted for security reasons. No options, no fancy heuristics.
Signed-off-by: Kay Sievers <kay.sievers@suse.de>
If USE_DEBUG=true and udev_log="debug", all output of the forked
programs to stdout and stderr is send to syslog.
Signed-off-by: Kay Sievers <kay.sievers@suse.de>
RUN="socket:<name>" will send the environment in the kernel uevent
format to the named destination. Using the socket instead of the program
to pass the hotplug events to the HAL daemon, cuts down the running
time of udevstart from 0.8 to 0.4 seconds on my box.
env -i ACTION=add DEVPATH=/block/hda/hda1 strace -s10000 ./udev block
sendto(3, "add@/block/hda/hda1\0
ACTION=add\0DEVPATH=/block/hda/hda1\0UDEV_LOG=3\0
ID_TYPE=disk\0ID_MODEL=HTS726060M9AT00\0ID_SERIAL=MRH401M4G6UM9B\0
ID_REVISION=MH4OA6BA\0ID_BUS=ata\0ID_PATH=pci-0000:00:1f.1-ide-0:0\0
ID_FS_USAGE=other\0ID_FS_TYPE=swap\0ID_FS_VERSION=2\0
ID_FS_UUID=9352cfef-7687-47bc-a2a3-34cf136f72e1\0
ID_FS_LABEL=ThisIsSwap\0ID_FS_LABEL_SAFE=ThisIsSwap\0
DEVNAME=/dev/hda1\0"
Signed-off-by: Kay Sievers <kay.sievers@suse.de>
Any program can query with udevinfo for persistent device
attributes evaluated on device discovery now.
Signed-off-by: Kay Sievers <kay.sievers@suse.de>
All the rule files can be compiled into a single file,
which can be mapped into the udev process to avoid parsing
the rules with every event.
Signed-off-by: Kay Sievers <kay.sievers@suse.de>
Modern rules are expected to call notification and postprocessing with
the RUN key. For compatibility the current behavior can be emulated
with an external helper.
Signed-off-by: Kay Sievers <kay.sievers@suse.de>
Better remove characters that are useless in a device node name.
It may be a security risk to pass any character read from e.g. a
sysfs attribute to a shell script we execute later.
Prevent the modification of the libsysfs attribute value
cache.
Clear PROGRAM result if the execution encountered an error.
We are already using %u in the sscanf() format string.
The patch replaces the int for the kernel release number with
unsigned int, as we can never have negative release numbers.
On Sun, 2004-12-19 at 18:31 +0100, Marco d'Itri wrote:
> > On Dec 19, Kay Sievers <kay.sievers@vrfy.org> wrote:
>
> > (Feature request: would it be possible to extend the rules files parser
> > to support continuation lines? I'd like it to consider lines starting
> > with white space as part of the previous line.)
>
> How about the usual backslash at the end of the line. Here is a simple
> patch.
Remove udev.bus, cause it's currently unused and newer kernels will pass
it in the hotplug environment as PHYSDEVBUS.
Remove udev.action, cause it's unused.
Rename udev_set_values() to udev_init_device().
