tree-wide: remove Emacs lines from all files This should be handled fine now by .dir-locals.el, so need to carry that stuff in every file.

udev: add emacs header line Otherwise emacs wants to use 2-space indentation and other attrocities.

util-lib: split out fd-related operations into fd-util.[ch] There are more than enough to deserve their own .c file, hence move them over.

util-lib: split our string related calls from util.[ch] into its own file string-util.[ch] There are more than enough calls doing string manipulations to deserve its own files, hence do something about it. This patch also sorts the #include blocks of all files that needed to be updated, according to the sorting suggestions from CODING_STYLE. Since pretty much every file needs our string manipulation functions this effectively means that most files have sorted #include blocks now. Also touches a few unrelated include files.

udevadm: enclose invocation of unlinkat() with a (void) cast Let's make Coverity happy about this one.

remove unused includes This patch removes includes that are not used. The removals were found with include-what-you-use which checks if any of the symbols from a header is in use.

Assorted format fixes Types used for pids and uids in various interfaces are unpredictable. Too bad.

udevadm,..: make --help output of udev tools more like the output of the various other tools

udevadm: split out find_device helper The idea is to unify the way that devices can be specified.

udev: place opening { at the same line as the function declaration

Remove dead lines in various places As pointed-out by clang -Wunreachable-code. No behaviour changes.

udevadm: modernization

udevadm,scsi_id: add short options to help strings and to the man page Also clean things up a bit here and there.

udev: export tags of "dead" device nodes to /run/udev/static_node-tags/ Based on a patch by Kay Sievers. A tag is exported at boot as a symlinks to the device node in the folder /run/udev/static_node-tags/<tagname>/, if the device node exists. These tags are cleaned up by udevadm info --cleanup-db, but are otherwise never removed.

udevadm: place const in the right place Otherwise clang at least thinks that both consts apply to char.

udev: firmware - do not created /run/udev/firmware-missing/ The userspace firmware loader is deprecated now, and will be entirely removed when we depend on a kernel version with the built-in firmware loader available.

use streq instead of strcmp

udev: move string copy functions to shared/

use the same email address everywhere

udev: support "udevadm info /dev/sda; udevadm info /sys/class/block/sda"

udev: use startswith() and streq()

udev: remove configuration options for /dev, /sys, /run directories

udev: replace ARRAY_SIZE() with ELEMENTSOF()

udev: fix gcc warnings showing up after adding $(AM_CFLAGS)

udev: switch to systemd logging functions

move imported udev into place