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.

shared: include what we use The next step of a general cleanup of our includes. This one mostly adds missing includes but there are a few removals as well.

tree-wide: sort includes Sort the includes accoding to the new coding style.

treewide: apply errno.cocci with small manual cleanups for style.

util-lib: introduce dirent-util.[ch] for directory entry calls Also, move a couple of more path-related functions to path-util.c.

util-lib: move more file I/O related calls into fileio.[ch]

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.

tree-wide: make use of log_error_errno() return value in more cases The previous coccinelle semantic patch that improved usage of log_error_errno()'s return value, only looked for log_error_errno() invocations with a single parameter after the error parameter. Update the patch to handle arbitrary numbers of additional arguments.

shared: add formats-util.h

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.

treewide: use log_*_errno whenever %m is in the format string If the format string contains %m, clearly errno must have a meaningful value, so we might as well use log_*_errno to have ERRNO= logged. Using: find . -name '*.[ch]' | xargs sed -r -i -e \ 's/log_(debug|info|notice|warning|error|emergency)\((".*%m.*")/log_\1_errno(errno, \2/' Plus some whitespace, linewrap, and indent adjustments.

logind: don't apply RemoveIPC= to system users We shouldn't destroy IPC objects of system users on logout. http://lists.freedesktop.org/archives/systemd-devel/2014-April/018373.html This introduces SYSTEM_UID_MAX defined to the maximum UID of system users. This value is determined compile-time, either as configure switch or from /etc/login.defs. (We don't read that file at runtime, since this is really a choice for a system builder, not the end user.) While we are at it we then also update journald to use SYSTEM_UID_MAX when we decide whether to split out log data for a specific client.

logind: automatically remove SysV + POSIX IPC objects when the users owning them fully log out