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2015-10-26util-lib: split out IO related calls to io-util.[ch]Lennart Poettering
2015-10-25test: "today UTC" is not always "today UTC"Hristo Venev
On Oct 25 2015 in EET/EEST there is a UTC+3->UTC+2 transition. This means that the representation of "today UTC" as local time is ambiguous.
2015-10-25util-lib: split out fd-related operations into fd-util.[ch]Lennart Poettering
There are more than enough to deserve their own .c file, hence move them over.
2015-10-24util-lib: split our string related calls from util.[ch] into its own file ↵Lennart Poettering
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.
2015-10-24util: split out escaping code into escape.[ch]Lennart Poettering
This really deserves its own file, given how much code this is now.
2015-10-24path-util: rework find_binary(), fsck_exists() and mkfs_exists()Lennart Poettering
Modernize the code a bit: - Get rid of FOREACH_WORD_SEPARATOR() loop in favour of a extract_first_word() loop. - Remove find_binary()'s "local" flag. It's not reasonably possible to look for binaries on remote systems, we hence should not pretend we could. - When we cannot find a suitable binary, return the last error returned from access() rather than ENOENT unconditionally. - Rework fsck_exists() and mkfs_exists() to return 1 on success, 0 if the implementation is missing and negative on real errors. This is more like we do it in other functions. - Make sure we also detect direct fsck symlinks to "true", rather than just absolute ones to /bin/true.
2015-10-23Merge pull request #1641 from poettering/btrfs-quotaDaniel Mack
btrfs quota beef up and various other unrelated changes
2015-10-22util: allow unbalanced double quote in EXTRACT_QUOTES|EXTRACT_RELAX modeEvgeny Vereshchagin
extract_first_word understands "\'string" but doesn't understand "\"string" fixed this inconsistency.
2015-10-22btrfs: beef-up btrfs support with a limited understanding of quotaLennart Poettering
With this change we understand more than just leaf quota groups for btrfs file systems. Specifically: - When we create a subvolume we can now optionally add the new subvolume to all qgroups its parent subvolume was member of too. Alternatively it is also possible to insert an intermediary quota group between the parent's qgroups and the subvolume's leaf qgroup, which is useful for a concept of "subtree" qgroups, that contain a subvolume and all its children. - The remove logic for subvolumes has been updated to optionally remove any leaf qgroups or "subtree" qgroups, following the logic above. - The snapshot logic for subvolumes has been updated to replicate the original qgroup setup of the source, if it follows the "subtree" design described above. It will not cover qgroup setups that introduce arbitrary qgroups, especially those orthogonal to the subvolume hierarchy. This also tries to be more graceful when setting up /var/lib/machines as btrfs. For example, if mkfs.btrfs is missing we don't even try to set it up as loopback device. Fixes #1559 Fixes #1129
2015-10-15test: add calendarspec UTC testsHristo Venev
2015-10-15test: parse_timestamp UTC and fractional seconds testsHristo Venev
2015-10-07Merge pull request #1484 from poettering/ask-pass-kernel-keyringDaniel Mack
cache harddisk passwords in the kernel keyring
2015-10-07basic: fix env expansion for strings leading with two dollar signsMichal Schmidt
The way to escape a literal dollar sign is to write "$$". But this does not work right if it's at the beginning of the argument. Fix it.
2015-10-07ask-password: add support for caching passwords in the kernel keyringLennart Poettering
This adds support for caching harddisk passwords in the kernel keyring if it is available, thus supporting caching without Plymouth being around. This is also useful for hooking up "gdm-auto-login" with the collected boot-time harddisk password, in order to support gnome keyring passphrase unlocking via the HDD password, if it is the same. Any passwords added to the kernel keyring this way have a timeout of 2.5min at which time they are purged from the kernel.
2015-10-06siphash24: unify APITom Gundersen
Make the API of the new helpers more similar to the old wrapper. In particular we now return the hash as a byte string to avoid any endianness problems.
2015-10-06test: hashmap - increase number of entries for crippled hash testMichal Schmidt
The purpose of testing with the crippled hash function is to cover the otherwise very unlikely codepath in bucket_calculate_dib() where it has to fall back to recomputing the hash value. This unlikely path was not covered by test-hashmap anymore after 57217c8f "test: hashmap - cripple the hash function by truncating the input rather than the output". Restore the test coverage by increasing the number of entries in the test. The number was determined empirically by checking with lcov.
2015-10-06Merge pull request #1465 from teg/siphash24Lennart Poettering
hashmap/siphash24: refactor hash functions
2015-10-06Merge pull request #1468 from poettering/fdnamesTom Gundersen
Add support for naming fds for socket activation and more
2015-10-06core: add support for naming file descriptors passed using socket activationLennart Poettering
This adds support for naming file descriptors passed using socket activation. The names are passed in a new $LISTEN_FDNAMES= environment variable, that matches the existign $LISTEN_FDS= one and contains a colon-separated list of names. This also adds support for naming fds submitted to the per-service fd store using FDNAME= in the sd_notify() message. This also adds a new FileDescriptorName= setting for socket unit files to set the name for fds created by socket units. This also adds a new call sd_listen_fds_with_names(), that is similar to sd_listen_fds(), but also returns the names of the fds. systemd-activate gained the new --fdname= switch to specify a name for testing socket activation. This is based on #1247 by Maciej Wereski. Fixes #1247.
2015-10-05hashmap: refactor hash_funcTom Gundersen
All our hash functions are based on siphash24(), factor out siphash_init() and siphash24_finalize() and pass the siphash state to the hash functions rather than the hash key. This simplifies the hash functions, and in particular makes composition simpler as calling siphash24_compress() repeatedly on separate chunks of input has the same effect as first concatenating the input and then calling siphash23_compress() on the result.
2015-10-05test: hashmap - cripple the hash function by truncating the input rather ↵Tom Gundersen
than the output The reason for the crippled hash function is to reduce the distribution of the hash function, do this by truncating the domain rather than the range. This does introduce a change in behavoir as the range is no longer contiguous, which greatly reduces collisions. This is needed as a follow-up patch will no longer allow individual hash functions to alter the output directly.
2015-10-05test: siphash24 - verify internal state and composabilityTom Gundersen
Verify the state of the hash-function according to the reference paper, also verify that we can decompose the input and hash the chunks one by one and still get the same result.
2015-10-05test: siphash24 - add regression testTom Gundersen
2015-10-02util: rework fgetxattrat_fake() to use O_PATHLennart Poettering
That way, we don't ever open the file, thus leave the atime untouched, and this works even when unprivileged.
2015-09-30basic: split out cpu set specific APIs into cpu-set-util.[ch]Lennart Poettering
2015-09-30util: rename parse_cpu_set() to parse_cpu_set_and_warn()Lennart Poettering
It's pretty untypical for our parsing functions to log on their own. Clarify in the name that this one does.
2015-09-30fileio: make get_status_field() more genericAaro Koskinen
All users of get_status_field() expect the field pattern to occur in the beginning of a line, and the delimiter is ':'. Hardcode this into the function, and also skip any whitespace before ':' to support fields in files like /proc/cpuinfo. Add support for returning the full field value (currently stops on first whitespace). Rename the function so it's easier to ensure all callers switch to new semantics.
2015-09-29systemctl: move strv_skip_first() out of systemctl.cLennart Poettering
Make it generic, call it strv_skip() and move it to strv.[ch]
2015-09-24util: Add test for parse_cpu_setFilipe Brandenburger
2015-09-24s390: add personality supportHendrik Brueckner
Introduce personality support for Linux on z Systems to run particular services with a 64-bit or 31-bit personality.
2015-09-22cgtop: underline table headerLennart Poettering
Let's underline the header line of the table shown by cgtop, how it is customary for tables. In order to do this, let's introduce new ANSI underline macros, and clean up the existing ones as side effect.
2015-09-21core: fix group ownership when Group is setRonny Chevalier
When Group is set in the unit, the runtime directories are owned by this group and not the default group of the user (same for cgroup paths and standard outputs) Fix #1231
2015-09-21test-execute: add tests for RuntimeDirectoryRonny Chevalier
2015-09-11util: remove ring.[ch] + pty.[ch] and testsLennart Poettering
This was used by consoled, which was removed, let's remove this too now.
2015-09-10tree-wide: never use the off_t unless glibc makes us use itLennart Poettering
off_t is a really weird type as it is usually 64bit these days (at least in sane programs), but could theoretically be 32bit. We don't support off_t as 32bit builds though, but still constantly deal with safely converting from off_t to other types and back for no point. Hence, never use the type anymore. Always use uint64_t instead. This has various benefits, including that we can expose these values directly as D-Bus properties, and also that the values parse the same in all cases.
2015-09-09tree-wide: update empty-if coccinelle script to cover empty-while and moreLennart Poettering
Let's also clean up single-line while and for blocks.
2015-09-09tree-wide: don't do assignments within if checksLennart Poettering
Turn this: if ((r = foo()) < 0) { ... into this: r = foo(); if (r < 0) { ...
2015-09-07basic: rework virtualization detection APILennart Poettering
Introduce a proper enum, and don't pass around string ids anymore. This simplifies things quite a bit, and makes virtualization detection more similar to architecture detection.
2015-09-07tests: Skip test-cgroup-util test_mask_supported() when not running under ↵Martin Pitt
systemd Commit 5f4c5fef6 introduced this new test case, but this does not work in build chroots where cgroupfs is not mounted. So skip the test if systemd is not running.
2015-09-05Merge pull request #1140 from poettering/sd-event-signalsDavid Herrmann
A variety of sd-event, sd-login and cgroup fixes
2015-09-04tests: Skip tests which need to access /sys/fs/cgroup if that is not availableMartin Pitt
Commit efdb023 ("core: unified cgroup hierarchy support") introduced a new error ENOEXEC in cg_unified() if /sys/fs/cgroup/ is not available. Adjust the "skip" checks in various tests accordingly. Add a corresponding "skip" check to test-bus-creds as well, as sd_bus_creds_new_from_pid() now calls cg_unified() as well. This re-fixes "make check" in build chroots without /sys/fs/cgroup. https://github.com/systemd/systemd/issues/1132
2015-09-04test: add one more test case for parse_pid()Lennart Poettering
2015-09-04cgroup: always read the supported controllers from the root cgroup of the ↵Lennart Poettering
local container Otherwise we might end up thinking that we support more controllers than actually enabled for the container we are running in.
2015-09-04util: document why parse_uid() returns ENXIOLennart Poettering
parse_uid() returns EINVAL for invalid strings, but ENXIO for the (uid_t) -1 user ids in order to distinguish these two cases. Document this.
2015-09-01core: unified cgroup hierarchy supportLennart Poettering
This patch set adds full support the new unified cgroup hierarchy logic of modern kernels. A new kernel command line option "systemd.unified_cgroup_hierarchy=1" is added. If specified the unified hierarchy is mounted to /sys/fs/cgroup instead of a tmpfs. No further hierarchies are mounted. The kernel command line option defaults to off. We can turn it on by default as soon as the kernel's APIs regarding this are stabilized (but even then downstream distros might want to turn this off, as this will break any tools that access cgroupfs directly). It is possibly to choose for each boot individually whether the unified or the legacy hierarchy is used. nspawn will by default provide the legacy hierarchy to containers if the host is using it, and the unified otherwise. However it is possible to run containers with the unified hierarchy on a legacy host and vice versa, by setting the $UNIFIED_CGROUP_HIERARCHY environment variable for nspawn to 1 or 0, respectively. The unified hierarchy provides reliable cgroup empty notifications for the first time, via inotify. To make use of this we maintain one manager-wide inotify fd, and each cgroup to it. This patch also removes cg_delete() which is unused now. On kernel 4.2 only the "memory" controller is compatible with the unified hierarchy, hence that's the only controller systemd exposes when booted in unified heirarchy mode. This introduces a new enum for enumerating supported controllers, plus a related enum for the mask bits mapping to it. The core is changed to make use of this everywhere. This moves PID 1 into a new "init.scope" implicit scope unit in the root slice. This is necessary since on the unified hierarchy cgroups may either contain subgroups or processes but not both. PID 1 hence has to move out of the root cgroup (strictly speaking the root cgroup is the only one where processes and subgroups are still allowed, but in order to support containers nicey, we move PID 1 into the new scope in all cases.) This new unit is also used on legacy hierarchy setups. It's actually pretty useful on all systems, as it can then be used to filter journal messages coming from PID 1, and so on. The root slice ("-.slice") is now implicitly created and started (and does not require a unit file on disk anymore), since that's where "init.scope" is located and the slice needs to be started before the scope can. To check whether we are in unified or legacy hierarchy mode we use statfs() on /sys/fs/cgroup. If the .f_type field reports tmpfs we are in legacy mode, if it reports cgroupfs we are in unified mode. This patch set carefuly makes sure that cgls and cgtop continue to work as desired. When invoking nspawn as a service it will implicitly create two subcgroups in the cgroup it is using, one to move the nspawn process into, the other to move the actual container processes into. This is done because of the requirement that cgroups may either contain processes or other subgroups.
2015-09-01cgroup: drop "ignore_self" argument from cg_is_empty()Lennart Poettering
In all cases where the function (or cg_is_empty_recursive()) ignoring the calling process is actually wrong, as a process keeps a cgroup busy regardless if its the current one or another. Hence, let's simplify things and drop the "ignore_self" parameter.
2015-08-25test-util: fix a memleakThomas Hindoe Paaboel Andersen
2015-08-21dns-domain: add call for concatenating two domain namesLennart Poettering
This is specifically useful for appending the mDNS ".local" suffix to a single-label hostname in the most correct way. (used in later commit)
2015-08-07strv: Add strv_shell_escapeRichard Maw
This modifies the strv in-place, replacing strings with their escaped version. It's mostly just a convenience function for when you need to join a strv together because it's passed as a string to something, and the separator needs escaping.
2015-08-07util: Add shell_escapeRichard Maw
This is for shell-style \ escaping rather than quoting, which while it has the same effect in produced shell commands, is not exclusively useful for shell commands. shell_escape would be useful for producing sed commands, as you would be able to \ escape the normal special characters, plus whichever argument separator was chosen; or it could be used to escape arguments passed to the overlayfs mount command.