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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.
2015-10-24util-lib: rework extract_first_word_and_warn() a bitLennart Poettering
- Really warn in all error cases, not just some. We need to make sure that all errors are logged to not confuse the user. - Explicitly check for EINVAL error code before claiming anything about invalid escapes, could be ENOMEM after all.
2015-10-24util: split out extract_first_word() and related calls into extract-word.[ch]Lennart Poettering
This is quite a lot of code these days, hence move it to its own source file.
2015-10-24path-util: unify how we process paths specified on the command lineLennart Poettering
Let's introduce a common function that makes relative paths absolute and warns about any errors while doing so.
2015-10-24util-lib: get_current_dir_name() can return errors other than ENOMEMLennart Poettering
get_current_dir_name() can return a variety of errors, not just ENOMEM, hence don't blindly turn its errors to ENOMEM, but return correct errors in path_make_absolute_cwd(). This trickles down into a couple of other functions, some of which receive unrelated minor fixes too with this commit.
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 #1652 from filbranden/extract1Lennart Poettering
util: Replace state with separate booleans in extract_first_word
2015-10-23Merge pull request #1641 from poettering/btrfs-quotaDaniel Mack
btrfs quota beef up and various other unrelated changes
2015-10-22util: Replace state with separate booleans in extract_first_wordFilipe Brandenburger
This simplifies the logic and uniformizes the way single and double quotes are handled. In the end, the code is about 40 lines shorter. Tested by running the excellent test cases from test-util. Also installed the systemd binaries including this patch and booted a system with it, everything looked normal.
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
2015-10-22util: improve dir_is_empty() callLennart Poettering
Simplify the call, and add dir_is_populated() as inverse call, in order to make some checks easier to read.
2015-10-20Merge pull request #1619 from iaguis/nspawn-sysfs-netns-3Lennart Poettering
nspawn: skip /sys-as-tmpfs if we don't use private-network
2015-10-20nspawn: skip /sys-as-tmpfs if we don't use private-networkIago López Galeiras
Since v3.11/7dc5dbc ("sysfs: Restrict mounting sysfs"), the kernel doesn't allow mounting sysfs if you don't have CAP_SYS_ADMIN rights over the network namespace. So the mounting /sys as a tmpfs code introduced in d8fc6a000fe21b0c1ba27fbfed8b42d00b349a4b doesn't work with user namespaces if we don't use private-net. The reason is that we mount sysfs inside the container and we're in the network namespace of the host but we don't have CAP_SYS_ADMIN over that namespace. To fix that, we mount /sys as a sysfs (instead of tmpfs) if we don't use private network and ignore the /sys-as-a-tmpfs code if we find that /sys is already mounted as sysfs. Fixes #1555
2015-10-19strv: Add _cleanup_strv_free_erase_ and _cleanup_string_free_erase_Zbigniew Jędrzejewski-Szmek
2015-10-19tree-wide: whenever we deal with passwords, erase them from memory after useLennart Poettering
A bit snake-oilish, but can't hurt.
2015-10-19Merge pull request #1598 from evverx/run-oomscoreadjustLennart Poettering
systemd-run can launch units with OOMScoreAdjust
2015-10-18Merge pull request #1595 from poettering/proxy-fixesDavid Herrmann
bus proxy fixes, and more
2015-10-17util: add func for checking OOMScoreAdjustEvgeny Vereshchagin
2015-10-15sd-netlink: refcount multicast groupsTom Gundersen
Track the number of matches installed for a given multicast group, and leave the group once no matches depend on it. In order to handle passed-in sockets that are already members of multicast groups we initialize the refcount based on the membership once we take over the socket. This way we will leave the socket in the state we found it once we finish with it. On kernels that do not fully support reading out the multicast group membership we fall back to never leaving any groups (as before).
2015-10-15btrfs: always remove the per-subvol qgroup when removing a subvolLennart Poettering
btrfs doesn't do that automatically, hence let's do that explicitly each time.
2015-10-15basic: calendarspec UTC supportHristo Venev
Just add " UTC" to the end of the event expression. Works for the special expressions.
2015-10-15basic: parse_timestamp UTC and fractional seconds supportHristo Venev
2015-10-15basic: add mktime_or_timegm and localtime_or_gmtime_rHristo Venev
to time-util.h. They take an extra argument `bool utc`.
2015-10-14util: add functions for validating syslog level and facilityEvgeny Vereshchagin
2015-10-08util: minor modernization of vt_disallocate()Lennart Poettering
2015-10-08util: do not reset terminal in acquire_terminal()Lennart Poettering
Before, we'd always reset acquired terminals, which is not really desired, as we expose a setting TTYReset= which is supposed to control whether the TTY is reset or not. Previously that setting would only enable a second resetting of the TTY, which is of course pointless... Hence, move the implicit resetting out of acquire_terminal() and make the callers do it if they need it.
2015-10-08machined: when opening a shell via machined, pass tty fds inLennart Poettering
With this change we'll open the shell's tty right from machined and then pass it to the transient unit we create. This way we make sure the pty is opened exactly as long as the transient service is around, and no longer, and vice versa. This way pty forwarders do not have to deal with EIO problems due to vhangup, as the pty is open all the time from the point we set things up to the point where the service goes away.
2015-10-08basic: move two more terminal-related calls into terminal-util.[ch]Lennart Poettering
2015-10-07util: always enforce O_NOCTTY and O_CLOEXEC in openpt_in_namespace()Lennart Poettering
The child process is shortliving, hence always set O_NOCTTY so that the tty doesn't quickly become controlling TTY and then gives it up again. Also set O_CLOEXEC, because it's cleaner, and doesn't affect the parent anyway.
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.
2015-10-07Merge pull request #1481 from again4you/devel/smack_sysuser_#4Daniel Mack
smack: label /etc/passwd and friends as '_' smack label when --with-smack-run-label' is enabled (v3)
2015-10-07strv: fix infinite loop in strv_extend_n()reverendhomer
Fixes Coverity #1325768
2015-10-07smack: label /etc/passwd and friends as '_' smack label when ↵Sangjung Woo
--with-smack-run-label' is enabled systemd-sysusers.service unit creates system users and groups and it could update /etc/passwd, /etc/group, /etc/shadow and /etc/gshadow. Those files should have '_' smack label because of accessibility. However, if systemd has its own smack label using '--with-smack-run-label' configuration, systemd-sysusers process spawned by systemd(pid:1) has its parent smack label and eventually updated files also is set as its parent smack label. This patch fixes that bug by labeling updated files as '_' smack label when --with-smack-run-label' is enabled.
2015-10-06siphash24: coding-style fixesTom Gundersen
Drop custom types. Drop unnecessary macros. Fix whitespace. Add asserts.
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.
2015-10-06Merge pull request #1469 from poettering/even-more-fixedDaniel Mack
Even more fixes
2015-10-06Merge pull request #1465 from teg/siphash24Lennart Poettering
hashmap/siphash24: refactor hash functions
2015-10-06util: some comment fixes in fdname_is_valid()Lennart Poettering
2015-10-06strv: properly return ENOMEM where we should in strv_extend_n()Lennart Poettering
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.
2015-10-06Merge pull request #1452 from poettering/journal-vacuumDaniel Mack
A variety of journal vacuuming improvements, plus an nspawn fix
2015-10-05hashmap: hash_funcs - make inputs unambiguousTom Gundersen
Make sure all variable-length inputs are properly terminated or that their length is encoded in some way. This avoids ambiguity of adjacent inputs. E.g., in case of a hash function taking two strings, compressing "ab" followed by "c" is now distinct from "a" followed by "bc".
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.
2015-10-05siphash24: expose the internal helper functionsTom Gundersen
2015-10-05siphash24: make siphash24_compress decomposableTom Gundersen
This allows the input to siphash24_compress to be decomposed into smaller chunks and the function to be called on each individual chunk.