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path: root/src/shared/util.h
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2014-07-16Be more careful when checking for empty filesZbigniew Jędrzejewski-Szmek
If we want to avoid reading a totally empty file, it seems better to check after we have opened the file, not before.
2014-07-13fileio: quote more shell characters in envfilesMantas Mikulėnas
Turns out, making strings shell-proof is harder than expected: # machinectl set-hostname "foo|poweroff" && . /etc/machine-info (This could be simplified by quoting *and* escaping all characters, which is harmless in shell but unnecessary.)
2014-07-07firstboot: get rid of firstboot generator again, introduce ↵Lennart Poettering
ConditionFirstBoot= instead As Zbigniew pointed out a new ConditionFirstBoot= appears like the nicer way to hook in systemd-firstboot.service on first boots (those with /etc unpopulated), so let's do this, and get rid of the generator again.
2014-07-07firstboot: follow lock protocol when changing /etc/shadowLennart Poettering
2014-07-07firstboot: add new component to query basic system settings on first boot, ↵Lennart Poettering
or when creating OS images offline A new tool "systemd-firstboot" can be used either interactively on boot, where it will query basic locale, timezone, hostname, root password information and set it. Or it can be used non-interactively from the command line when prepareing disk images for booting. When used non-inertactively the tool can either copy settings from the host, or take settings on the command line. $ systemd-firstboot --root=/path/to/my/new/root --copy-locale --copy-root-password --hostname=waldi The tool will be automatically invoked (interactively) now on first boot if /etc is found unpopulated. This also creates the infrastructure for generators to be notified via an environment variable whether they are running on the first boot, or not.
2014-07-07util: don't consider tabs special in string_has_cc() anymoreLennart Poettering
Instead, take a list of exceptions to our usual CC check
2014-07-03sd-bus: support connecting to remote hosts, directly into containersLennart Poettering
systemctl -H root@foobar:waldi will now show a list of services running on container "waldi" on host "foobar", using "root" for authenticating at "foobar". Since entereing a container requires priviliges, this will only work correctly for root logins.
2014-07-02util: generalize is_localhost() and use it everywhere where applicableLennart Poettering
2014-06-18tmpfiles: add "+" modifier support to b, c, p lines in addition to LLennart Poettering
2014-06-17install: make sure that --root= mode doesn't make us consider all units ↵Lennart Poettering
outside of search path
2014-06-16util: add realloc_multiply() helperDavid Herrmann
This is similar to malloc_multiply() and friends. It is realloc() with a multiplication-overflow check.
2014-06-16util: fix multiply-alloc helpers with size==0David Herrmann
Passing 0 to malloc() is not required to return NULL. Therefore, don't bail out if "b" is 0. This is not of importance to the existing helpers, but the upcoming realloc_multiply() requires this. To keep consistence, we keep the same behavior for the other helpers.
2014-06-16tmpfiles: add new "L+" command as stronger version of "L", that removes the ↵Lennart Poettering
destination before creating a symlink Also, make use of this for mtab as long as mount insists on creating it even if we invoke it with "-n".
2014-06-12sysusers: add minimal tool to reconstruct /etc/passwd and /etc/group from ↵Lennart Poettering
static files systemd-sysusers is a tool to reconstruct /etc/passwd and /etc/group from static definition files that take a lot of inspiration from tmpfiles snippets. These snippets should carry information about system users only. To make sure it is not misused for normal users these snippets only allow configuring UID and gecos field for each user, but do not allow configuration of the home directory or shell, which is necessary for real login users. The purpose of this tool is to enable state-less systems that can populate /etc with the minimal files necessary, solely from static data in /usr. systemd-sysuser is additive only, and will never override existing users. This tool will create these files directly, and not via some user database abtsraction layer. This is appropriate as this tool is supposed to run really early at boot, and is only useful for creating system users, and system users cannot be stored in remote databases anyway. The tool is also useful to be invoked from RPM scriptlets, instead of useradd. This allows moving from imperative user descriptions in RPM to declarative descriptions. The UID/GID for a user/group to be created can either be chosen dynamic, or fixed, or be read from the owner of a file in the file system, in order to support reconstructing the correct IDs for files that shall be owned by them. This also adds a minimal user definition file, that should be sufficient for most basic systems. Distributions are expected to patch these files and augment the contents, for example with fixed UIDs for the users where that's necessary.
2014-06-10tmpfiles: add new "C" line for copying files or directoriesLennart Poettering
2014-06-10bus-proxy: properly index policy by uid/gid when parsingLennart Poettering
2014-06-06namespace: beef up read-only bind mount logicLennart Poettering
Instead of blindly creating another bind mount for read-only mounts, check if there's already one we can use, and if so, use it. Also, recursively mark all submounts read-only too. Also, ignore autofs mounts when remounting read-only unless they are already triggered.
2014-06-05namespace: when setting up an inaccessible mount point, unmounting ↵Lennart Poettering
everything below This has the benefit of not triggering any autofs mount points unnecessarily.
2014-05-24shared: add touch_file() and let touch() always update timestampKay Sievers
2014-05-18machined: add logic to query IP addresses of containersLennart Poettering
2014-05-15Remove unnecessary casts in printfsZbigniew Jędrzejewski-Szmek
No functional change expected :)
2014-05-05timesyncd: lookup name server via sd-resolve, support IPv6, react to ↵Lennart Poettering
SIGINT/SITERM
2014-04-23delta: draw arrows with draw_special_char()Lennart Poettering
Let's unify generation of unicode chars at one place. Also, don't add an extra space into chars we print, except for the tree chars where this is really necessary.
2014-04-21systemctl: delete REBOOT_PARAM_FILE if no parameter is specifiedMichael Olbrich
And move it to sperate function.
2014-04-21implement a union to pad out file_handleDave Reisner
Cases where name_to_handle_at is used allocated the full struct to be MAX_HANDLE_SZ, and assigned this size to handle_bytes. This is wrong since handle_bytes should describe the length of the flexible array member and not the whole struct. Define a union type which includes sufficient padding to allow assignment of MAX_HANDLE_SZ to be correct.
2014-04-12Unify GREEDY_REALLOC and GREEDY_REALLOC_TZbigniew Jędrzejewski-Szmek
greedy_realloc() and greedy_realloc0() now store the allocated size as the count, not bytes. Replace GREEDY_REALLOC uses with GREEDY_REALLOC_T everywhere, and then rename GREEDY_REALLOC_T to GREEDY_REALLOC. It is just too error-prone to have two slightly different macros which do the same thing.
2014-03-24util: replace close_pipe() with new safe_close_pair()Lennart Poettering
safe_close_pair() is more like safe_close(), except that it handles pairs of fds, and doesn't make and misleading allusion, as it works similarly well for socketpairs() as for pipe()s...
2014-03-18util: replace close_nointr_nofail() by a more useful safe_close()Lennart Poettering
safe_close() automatically becomes a NOP when a negative fd is passed, and returns -1 unconditionally. This makes it easy to write lines like this: fd = safe_close(fd); Which will close an fd if it is open, and reset the fd variable correctly. By making use of this new scheme we can drop a > 200 lines of code that was required to test for non-negative fds or to reset the closed fd variable afterwards.
2014-03-14timedated: use builtins for integer log and expZbigniew Jędrzejewski-Szmek
2014-03-14util: add hexdump() call to create pretty hexdumps of dataLennart Poettering
This is very useful when debugging sd-bus to look at messages.
2014-03-14shared: add root argument to search_and_fopenMichael Marineau
This adds the same root argument to search_and_fopen that conf_files_list already has. Tools that use those two functions as a pair can now be easily modified to load configuration files from an alternate root filesystem tree.
2014-03-12util: Make in_charset a static inline in util.hJosh Triplett
With in_charset now reduced to a one-liner (plus asserts), make it a static inline.
2014-03-11systemctl: for switch-root check, if we switch to a systemd initHarald Hoyer
If "systemctl switch-root" is called with a specific "INIT" or /proc/cmdline contains "init=", then systemd would not serialize itsself. Let systemctl check, if the new init is in the standard systemd installation path and if so, clear the INIT parameter, to let systemd serialize itsself.
2014-03-11util: add files_same() helper functionHarald Hoyer
files_same() returns 1, if the files are the same 0, if the files have different inode/dev numbers errno, for any stat error
2014-03-07fstab-generator: merge /proc/cmdline parsing loops into oneLennart Poettering
2014-03-06util: move more intellegince into parse_proc_cmdline()Lennart Poettering
Already split variable assignments before invoking the callback. And drop "rd." settings if we are not in an initrd.
2014-03-06util: add timeout to generator executionLennart Poettering
2014-03-04logind: make $XDG_RUNTIME_DIR a per-user tmpfsLennart Poettering
This way each user allocates from his own pool, with its own size limit. This puts the size limit by default to 10% of the physical RAM size but makes it configurable in logind.conf.
2014-02-25login: fix pos-array allocationDavid Herrmann
GREEDY_REALLOC takes a pointer to the real size, not the array-width as argument. Therefore, our array is currently way to small to keep the seat positions. Introduce GREEDY_REALLOC0_T() as typed version of GREEDY_REALLOC and store the array-width instead of array-size.
2014-02-23core: clean up some confusing regarding SI decimal and IEC binary suffixes ↵Lennart Poettering
for sizes According to Wikipedia it is customary to specify hardware metrics and transfer speeds to the basis 1000 (SI decimal), while software metrics and physical volatile memory (RAM) sizes to the basis 1024 (IEC binary). So far we specified everything in IEC, let's fix that and be more true to what's otherwise customary. Since we don't want to parse "Mi" instead of "M" we document each time what the context used is.
2014-02-19core: add Personality= option for units to set the personality for spawned ↵Lennart Poettering
processes
2014-02-18nspawn: add new --personality= switch to make it easier to run 32bit ↵Lennart Poettering
containers on a 64bit host
2014-02-18util: generalize code that checks whether PIDs are alive or unwaited forLennart Poettering
2014-02-17core: fixate show_status earlier, so that we actually print the welcome messageLennart Poettering
Previously, we'd fixed show_state only after printing the welcome message which had the effect that the welcome message was almost always suppressed.
2014-02-17Extract looping over /proc/cmdline into a shared functionZbigniew Jędrzejewski-Szmek
In cryptsetup-generator automatic cleanup had to be replaced with manual cleanup, and the code gets a bit longer. But existing code had the issue that it returned negative values from main(), which was wrong, so should be reworked anyway.
2014-02-14Fix prototype of get_process_stateZbigniew Jędrzejewski-Szmek
2014-02-14core: fix detection of dead processesYuxuan Shui
Commit 5ba6985b moves the UNIT_VTABLE(u)->sigchld_event before systemd actually reaps the zombie. Which leads to service_load_pid_file accepting zombie as a valid pid. This fixes timeouts like: [ 2746.602243] systemd[1]: chronyd.service stop-sigterm timed out. Killing. [ 2836.852545] systemd[1]: chronyd.service still around after SIGKILL. Ignoring. [ 2927.102187] systemd[1]: chronyd.service stop-final-sigterm timed out. Killing. [ 3017.352560] systemd[1]: chronyd.service still around after final SIGKILL. Entering failed mode.
2014-02-11util: drop parse_user_at_host() since its unused nowLennart Poettering
2014-02-03conf-parser: warn when we open configuration files with weird access bitsLennart Poettering
2014-01-30util: add u32ctz() call for determining ctz of uint32_tLennart Poettering