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2015-09-06core: pass details to polkit for some unit actionsMichael Chapman
The following details are passed: - unit: the primary name of the unit upon which the action was invoked (i.e. after resolving any aliases); - verb: one of 'start', 'stop', 'reload', 'restart', 'try-restart', 'reload-or-restart', 'reload-or-try-restart', 'kill', 'reset-failed', or 'set-property', corresponding to the systemctl verb used to invoke the action. Typical use of these details in a polkit policy rule might be: // Allow alice to manage example.service; // fall back to implicit authorization otherwise. polkit.addRule(function(action, subject) { if (action.id == "org.freedesktop.systemd1.manage-units" && action.lookup("unit") == "example.service" && subject.user == "alice") { return polkit.Result.YES; } }); We also supply a custom polkit message that includes the unit's name and the requested operation.
2015-09-04util: add new uid_is_valid() callLennart Poettering
This simply factors out the uid validation checks from parse_uid() and uses them everywhere. This simply verifies that the passed UID is neither 64bit -1 nor 32bit -1.
2015-08-31util: Declare a cleanup routine for a cpu_set_tFilipe Brandenburger
Make use of it in config_parse_cpu_affinity2. Tested by tweaking the `CPUAffinity' setting in /etc/systemd/system.conf and reloading the daemon to confirm it is working as expected. No regressions observed in test cases.
2015-08-30util: make malloc0 ask calloc for one block of size nThomas Hindoe Paaboel Andersen
... instead of an array of n individual bytes. Silences a lot of warnings in smatch.
2015-08-24util: make machine_name_is_valid() a macro and move it to hostname-util.hLennart Poettering
As it turns out machine_name_is_valid() does the exact same thing as hostname_is_valid() these days, as it just invoked that and checked the name length was < 64. However, hostname_is_valid() checks the length against HOST_NAME_MAX anyway (which is 64 on Linux), hence any additional check is redundant. We hence replace machine_name_is_valid() by a macro that simply maps it to hostname_is_valid() but sets the allow_trailing_dot parameter to false. We also move this this call to hostname-util.h, to the same place as the hostname_is_valid() declaration.
2015-08-17Merge pull request #977 from richardmaw-codethink/machinectl-userns-login-v2Lennart Poettering
Fix machinectl login with containers in user namespaces (v2)
2015-08-17namespace helpers: Allow entering a UID namespaceRichard Maw
To be able to use `systemd-run` or `machinectl login` on a container that is in a private user namespace, the sub-process must have entered the user namespace before connecting to the container's D-Bus, otherwise the UID and GID in the peer credentials are garbage. So we extend namespace_open and namespace_enter to support UID namespaces, and we enter the UID namespace in bus_container_connect_{socket,kernel}. namespace_open will degrade to a no-op if user namespaces are not enabled in the kernel. Special handling is required for the setns call in namespace_enter with a user namespace, since transitioning to your own namespace is forbidden, as it would result in re-entering your user namespace as root. Arguably it may be valid to check this at the call site, rather than inside namespace_enter, but it is less code to do it inside, and if the intention of calling namespace_enter is to *be* in the target namespace, rather than to transition to the target namespace, it is a reasonable approach. The check for whether the user namespace is the same must happen before entering namespaces, as we may not be able to access /proc during the intermediate transition stage. We can't instead attempt to enter the user namespace and then ignore the failure from it being the same namespace, since the error code is not distinct, and we can't compare namespaces while mid-transition.
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.
2015-08-07util: Allow non-separator coalescing parsing in extract_first_wordRichard Maw
If EXTRACT_DONT_COALESCE_SEPARATORS is passed, then leading separators, trailing separators and spans of multiple separators aren't skipped, and empty arguments from before, after or between separators may be extracted.
2015-08-07util: Don't interpret quotes by default in extract_first_wordRichard Maw
This adds an EXTRACT_QUOTES option to allow the previous behaviour, of not interpreting any character inside ' or " quotes as separators.
2015-08-07util: change unquote_*_word to extract_*_wordRichard Maw
It now takes a separators argument, which defaults to WHITESPACE if NULL is passed.
2015-08-05Merge branch 'hostnamectl-dot-v2'Zbigniew Jędrzejewski-Szmek
Manual merge of https://github.com/systemd/systemd/pull/751.
2015-08-05hostname-util: add relax parameter to hostname_is_validZbigniew Jędrzejewski-Szmek
Tests are modified to check behaviour with relax and without relax. New tests are added for hostname_cleanup(). Tests are moved a new file (test-hostname-util) because there's now a bunch of them. New parameter is not used anywhere, except in tests, so there should be no observable change.
2015-08-04util: add getxattr helper apisWaLyong Cho
To get xattr of given path or fd on newly allocated buffer, add new helper api getxattr_malloc() and fgetxattr_malloc().
2015-07-31Merge pull request #814 from dvdhrm/mfreeDaniel Mack
tree-wide: introduce mfree()
2015-07-31tree-wide: introduce mfree()David Herrmann
Pretty trivial helper which wraps free() but returns NULL, so we can simplify this: free(foobar); foobar = NULL; to this: foobar = mfree(foobar);
2015-08-01busctl: add and use strcmp_ptr()Namhyung Kim
In member_compare_func(), it compares interface, type and name of members. But as it can contain NULL pointer, it needs to check them before calling strcmp(). So make it as a separate strcmp_ptr function (named after streq_ptr) so that it can be used by others. Also let streq_ptr() to use it in order to make the code simpler.
2015-07-14basic: util - add base32hexmem() function similar to hexmem()Tom Gundersen
This implements more of RFC4648.
2015-07-12basic: util - add base64mem() function similar to hexmem()Tom Gundersen
This implements RFC4648 for a slightly more compact representation of binary data compared to hex (6 bits per character rather than 4).
2015-07-12basic: util - fix errorhandling in unhexmem()Tom Gundersen
We were ignoring failures from unhexchar, which meant that invalid hex characters were being turned into garbage rather than the string rejected. Fix this by making unhexmem return an error code, also change the API slightly, to return the size of the returned memory, reflecting the fact that the memory is a binary blob,and not a string. For convenience, still append a trailing NULL byte to the returned memory (not included in the returned size), allowing callers to treat it as a string without doing a second copy.
2015-06-17util: Introduce unquote_first_word_and_warnFilipe Brandenburger
It will try to unquot_first_word, but if it runs into escaping problems it will retry it adding UNQUOTE_CUNESCAPE_RELAX to the flags. If it succeeds on the second try, it will log a warning about it. If it fails both times, it will log an error. Add test cases to confirm it behaves as expected.
2015-06-17util: New flag UNQUOTE_UNESCAPE_RELAX for unquote_first_wordFilipe Brandenburger
The new flag UNQUOTE_UNESCAPE_RELAX preserves unrecognized escape sequences verbatim in unquote_first_word, either when it's a trailing backslash (similar to UNQUOTE_RELAX, but in this case keep the extra backslash in the output) or in the middle of a sequence string. Add unit test cases to ensure the new flag works as expected and to prevent regressions from being introduced. Tested with a follow up commit converting config_parse_exec() to start using unquote_first_word, in which case this flags makes it possible to preserve unrecognized escape sequences. Relevant bug: https://bugs.freedesktop.org/show_bug.cgi?id=90794
2015-06-15util: when creating temporary file names, allow including extra id string in itLennart Poettering
This adds a "char *extra" parameter to tempfn_xxxxxx(), tempfn_random(), tempfn_ranomd_child(). If non-NULL this string is included in the middle of the newly created file name. This is useful for being able to distuingish the kind of temporary file when we see one. This also adds tests for the three call. For now, we don't make use of this at all, but port all users over.
2015-06-11build-sys: split internal basic/ library from shared/Kay Sievers
basic/ can be used by everything cannot use anything outside of basic/ libsystemd/ can use basic/ cannot use shared/ shared/ can use libsystemd/