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2016-07-25Merge pull request #3728 from poettering/dynamic-usersZbigniew Jędrzejewski-Szmek
2016-07-22core: add a concept of "dynamic" user ids, that are allocated as long as a ↵Lennart Poettering
service is running This adds a new boolean setting DynamicUser= to service files. If set, a new user will be allocated dynamically when the unit is started, and released when it is stopped. The user ID is allocated from the range 61184..65519. The user will not be added to /etc/passwd (but an NSS module to be added later should make it show up in getent passwd). For now, care should be taken that the service writes no files to disk, since this might result in files owned by UIDs that might get assigned dynamically to a different service later on. Later patches will tighten sandboxing in order to ensure that this cannot happen, except for a few selected directories. A simple way to test this is: systemd-run -p DynamicUser=1 /bin/sleep 99999
2016-07-22tree-wide: use sd_id128_is_null() instead of sd_id128_equal where appropriateLennart Poettering
It's a bit easier to read because shorter. Also, most likely a tiny bit faster.
2016-07-11treewide: fix typos and remove accidental repetition of wordsTorstein Husebø
2016-06-29sd-bus: Fix a read after free error in bus-match. (#3624) (#3625)Weng Xuetian
The loop on bus_match_run should break and return immediately if bus->match_callbacks_modified is true. Otherwise the loop may access free'd data.
2016-06-16systemctl: make sure we terminate the bus connection first, and then close ↵Lennart Poettering
the pager (#3550) If "systemctl -H" is used, let's make sure we first terminate the bus connection, and only then close the pager. If done in this order ssh will get an EOF on stdin (as we speak D-Bus through ssh's stdin/stdout), and then terminate. This makes sure the standard error we were invoked on is released by ssh, and only that makes sure we don't deadlock on the pager which waits for all clients closing its input pipe. (Similar fixes for the various other xyzctl tools that support both pagers and -H) Fixes: #3543
2016-05-14busctl: use Monitoring interface (#3245)Lars Uebernickel
This is now the recommended way to do monitoring by upstream D-Bus. It's also allowed in the default policy, whereas eavesdrop is not anymore, which effectively broke busctl on many systems.
2016-05-09tree-wide: rename draw_special_char to special_glyphZbigniew Jędrzejewski-Szmek
That function doesn't draw anything on it's own, just returns a string, which sometimes is more than one character. Also remove "DRAW_" prefix from character names, TREE_* and ARROW and BLACK_CIRCLE are unambigous on their own, don't draw anything, and are always used as an argument to special_glyph(). Rename "DASH" to "MDASH", as there's more than one type of dash.
2016-05-05tree-wide: introduce new SOCKADDR_UN_LEN() macro, and use it everywhereLennart Poettering
The macro determines the right length of a AF_UNIX "struct sockaddr_un" to pass to connect() or bind(). It automatically figures out if the socket refers to an abstract namespace socket, or a socket in the file system, and properly handles the full length of the path field. This macro is not only safer, but also simpler to use, than the usual offsetof() + strlen() logic.
2016-04-16sd-bus: use IN_SETZbigniew Jędrzejewski-Szmek
2016-04-13sd-bus: query pid also when searching for supplementary gidsIsmo Puustinen
If the SD_BUS_CREDS_SUPPLEMENTARY_GIDS value is requested, the pid is queried to find out the supplementary gids value from /proc/pid/status. Otherwise sd_bus_creds_get_supplementary_gids() won't work unless some other value in mask triggered fetching the pid information.
2016-04-12core: make sure we generate a nicer error when a linked unit is attempted to ↵Lennart Poettering
be enabled We don't allow using config symlinks to enable units, but the error message we printed was awful. Fix that, and generate a more readable error. Fixes #3010.
2016-04-12core: when enabling a generated unit file, return a clean errorLennart Poettering
Let's be precise when the user tries to invoke an "enable" operation on a generated unit file.
2016-03-05tree-wide: use SET_FLAG() macro to make code more clearAlexander Kuleshov
2016-02-25Merge pull request #2671 from 0xAX/move-pager-open-to-one-placeZbigniew Jędrzejewski-Szmek
tree-wide: merge pager_open_if_enabled() to the pager_open()
2016-02-26tree-wide: merge pager_open_if_enabled() to the pager_open()Alexander Kuleshov
Many subsystems define own pager_open_if_enabled() function which checks '--no-pager' command line argument and open pager depends on its value. All implementations of pager_open_if_enabled() are the same. Let's merger this function with pager_open() from the shared/pager.c and remove pager_open_if_enabled() from all subsytems to prevent code duplication.
2016-02-23tree-wide: minor formatting inconsistency cleanupsVito Caputo
2016-02-22tree-wide: make ++/-- usage consistent WRT spacingVito Caputo
Throughout the tree there's spurious use of spaces separating ++ and -- operators from their respective operands. Make ++ and -- operator consistent with the majority of existing uses; discard the spaces.
2016-02-15Merge pull request #2618 from zonque/busproxy-removalLennart Poettering
remove bus-proxyd
2016-02-13busctl: when formatting message contents, make sure to print all whitespacesLennart Poettering
Previously we'd miss a necessary whitespace at the end of arrays, if more data was following.
2016-02-13resolved: drop references to two bus error codes no longer usedLennart Poettering
2016-02-13Merge pull request #2589 from keszybz/resolve-tool-2Lennart Poettering
Better support of OPENPGPKEY, CAA, TLSA packets and tests
2016-02-12remove bus-proxydDaniel Mack
As kdbus won't land in the anticipated way, the bus-proxy is not needed in its current form. It can be resurrected at any time thanks to the history, but for now, let's remove it from the sources. If we'll have a similar tool in the future, it will look quite differently anyway. Note that stdio-bridge is still available. It was restored from a version prior to f252ff17, and refactored to make use of the current APIs.
2016-02-11Remove kdbus custom endpoint supportDaniel Mack
This feature will not be used anytime soon, so remove a bit of cruft. The BusPolicy= config directive will stay around as compat noop.
2016-02-11Add memcpy_safeZbigniew Jędrzejewski-Szmek
ISO/IEC 9899:1999 §7.21.1/2 says: Where an argument declared as size_t n specifies the length of the array for a function, n can have the value zero on a call to that function. Unless explicitly stated otherwise in the description of a particular function in this subclause, pointer arguments on such a call shall still have valid values, as described in 7.1.4. In base64_append_width memcpy was called as memcpy(x, NULL, 0). GCC 4.9 started making use of this and assumes This worked fine under -O0, but does something strange under -O3. This patch fixes a bug in base64_append_width(), fixes a possible bug in journal_file_append_entry_internal(), and makes use of the new function to simplify the code in other places.
2016-02-10tree-wide: remove Emacs lines from all filesDaniel Mack
This should be handled fine now by .dir-locals.el, so need to carry that stuff in every file.
2016-02-09core: change internal error code for masked units from EBADR to ESHUTDOWNLennart Poettering
This commit changes the mapping of the BUS_ERROR_UNIT_MASKED error to ESHUTDOWN. This error is used whenever the transaction engine is asked to operate on a masked unit. ESHUTDOWN is what is used for the similar case when the unit file enable/disable logic hits a masked unit file, hence is a natural candidate to be used here too. Background: before this patch both "job type not applicable" and "unit masked" where mapped to EBADR, which transaction_add_job_and_dependencies() then checked for. It actually wanted to check exclusively for the former error condition, not the latter but due to the same mapping this failed to work. This patch semi-undoes an accidental change made in caffa4ef700fdd0eadd6c0b2ef9925611672a1bc, however restores the error number to ESHUTDOWN instead of the original ENOSYS (for the reasons indicated above). To make this easier to grok for the future, I added comments to explaining which error conditions are checked for. Fixes: #2315
2016-01-25resolve: generate a nice clean error when clients try to resolve a name when ↵Lennart Poettering
the network is down
2016-01-19resolved: add bus API for configuring per-link DNS settingsLennart Poettering
This is useful for alternative network management solutions (such as NetworkManager) to push DNS configuration data into resolved. The calls will fail should networkd already have taken possesion of a link, so that the bus API is only available if we don't get the data from networkd.
2016-01-19resolved: add a couple of errors to the error mapping tablesLennart Poettering
These were previously forgotten, add them now.
2016-01-18bus-kernel: reword assignment of dst_id in bus_message_setup_kmsgZbigniew Jędrzejewski-Szmek
Setting of dst_id was based on interplay of two booleans, making the logic hard to follow (for humans and compilers alike). gcc was confused and emmitted a warning about an uninitialized variable. Rework the code to make it obvious that dst_id is set properly.
2016-01-18test-bus-error: add tests for setting error == 0Zbigniew Jędrzejewski-Szmek
2016-01-18bus-error: verify additional error maps during installationZbigniew Jędrzejewski-Szmek
Go over the entries in the map and check that they make sense. Tests are added. In the future we might want to do additional checks, e.g. verifying that the error names are in the expected format.
2016-01-18basic,bus-error: return negative error from errno_from_nameZbigniew Jędrzejewski-Szmek
errno_from_name used an unusual return convention where 0 meant "not found". This tripped up config_parse_syscall_errno(), which would treat that as success. Return -EINVAL instead, and adjust bus_error_name_to_errno() for the new convention. Also remove a goto which was used as a simple if and clean up surroudning code a bit.
2016-01-12tree-wide: use xsprintf() where applicableDaniel Mack
Also add a coccinelle receipt to help with such transitions.
2016-01-11resolved: don't attempt to send queries for DNSSEC RR types to servers not ↵Lennart Poettering
supporting them If we already degraded the feature level below DO don't bother with sending requests for DS, DNSKEY, RRSIG, NSEC, NSEC3 or NSEC3PARAM RRs. After all, we cannot do DNSSEC validation then anyway, and we better not press a legacy server like this with such modern concepts. This also has the benefit that when we try to validate a response we received using DNSSEC, and we detect a limited server support level while doing so, all further auxiliary DNSSEC queries will fail right-away.
2016-01-05tests: use sd_bus_flush_close_unref instead of sd_bus_unref in test-bus-cleanupEvgeny Vereshchagin
Fixes: $ make valgrind-tests TESTS=test-bus-cleanup ==6363== 9 bytes in 1 blocks are possibly lost in loss record 1 of 28 ==6363== at 0x4C2BBCF: malloc (vg_replace_malloc.c:299) ==6363== by 0x197D12: hexmem (hexdecoct.c:79) ==6363== by 0x183083: bus_socket_start_auth_client (bus-socket.c:639) ==6363== by 0x1832A0: bus_socket_start_auth (bus-socket.c:678) ==6363== by 0x183438: bus_socket_connect (bus-socket.c:705) ==6363== by 0x14B0F2: bus_start_address (sd-bus.c:1053) ==6363== by 0x14B592: sd_bus_start (sd-bus.c:1134) ==6363== by 0x14B95E: sd_bus_open_system (sd-bus.c:1235) ==6363== by 0x1127E2: test_bus_open (test-bus-cleanup.c:42) ==6363== by 0x112AAE: main (test-bus-cleanup.c:87) ==6363== ... $ ./libtool --mode=execute valgrind ./test-bus-cleanup ==6584== LEAK SUMMARY: ... ==6584== possibly lost: 10,566 bytes in 27 blocks
2016-01-04resolved: explicitly handle case when the trust anchor is emptyLennart Poettering
Since we honour RFC5011 revoked keys it might happen we end up with an empty trust anchor, or one where there's no entry for the root left. With this patch the logic is changed what to do in this case. Before this patch we'd end up requesting the root DS, which returns with NODATA but a signed NSEC we cannot verify, since the trust anchor is empty after all. Thus we'd return a DNSSEC result of "missing-key", as we lack a verified version of the key. With this patch in place, look-ups for the root DS are explicitly recognized, and not passed on to the DNS servers. Instead, if downgrade-ok mode is on an unsigned NODATA response is synthesized, so that the validator code continues under the assumption the root zone was unsigned. If downgrade-ok mode is off a new transaction failure is generated, that makes this case recognizable.
2016-01-04resolved: introduce a proper bus error for DNSSEC validation errorsLennart Poettering
2016-01-01Merge pull request #2241 from poettering/dnssec9Tom Gundersen
Ninth DNSSEC patch set
2015-12-29resolved: properly handle SRV RRs with the DNS root as hostnameLennart Poettering
2015-12-29resolved: add errno mapping for BUS_ERROR_CONNECTION_FAILURELennart Poettering
This was missing when the error type was added in ac720200b7e5b80cc4985087e38f3452e5b3b080.
2015-12-29resolved: change mapping of BUS_ERROR_NO_NAME_SERVERS to ESRCHLennart Poettering
EIO is really too generic, and indicates transmission problems.
2015-12-29tests: fix memory leak in test-bus-marshalEvgeny Vereshchagin
Fixes: ``` $ ./configure ... --enable-dbus $ make $ make valgrind-tests TESTS=test-bus-marshal ... ==25301== 51 bytes in 1 blocks are definitely lost in loss record 7 of 18 ==25301== at 0x4C2DD9F: realloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so) ==25301== by 0x5496B8C: ??? (in /lib/x86_64-linux-gnu/libdbus-1.so.3.14.3) ==25301== by 0x54973E3: _dbus_string_append_printf_valist (in /lib/x86_64-linux-gnu/libdbus-1.so.3.14.3) ==25301== by 0x547E5C2: _dbus_set_error_valist (in /lib/x86_64-linux-gnu/libdbus-1.so.3.14.3) ==25301== by 0x547E73E: dbus_set_error (in /lib/x86_64-linux-gnu/libdbus-1.so.3.14.3) ==25301== by 0x548969A: dbus_message_demarshal (in /lib/x86_64-linux-gnu/libdbus-1.so.3.14.3) ==25301== by 0x115C1A: main (test-bus-marshal.c:244) ==25301== ```
2015-12-26resolved: generate an explicit transaction error when we cannot reach server ↵Lennart Poettering
via TCP Previously, if we couldn't reach a server via UDP we'd generate an MAX_ATTEMPTS transaction result, but if we couldn't reach it via TCP we'd generate a RESOURCES transaction result. While it is OK to generate two different errors I think, "RESOURCES" is certainly a misnomer. Introduce a new transaction result "CONNECTION_FAILURE" instead.
2015-12-02tests: turn check if manager cannot be intialized into macroZbigniew Jędrzejewski-Szmek
We need to check the same thing in multiple tests. Use a shared macro to make it easier to update the list of errnos. Change the errno code for "unitialized cgroup fs" for ENOMEDIUM. Exec format error looks like something more serious. This fixes test-execute invocation in mock.
2015-11-27selinux: split up mac_selinux_have() from mac_selinux_use()Lennart Poettering
Let's distuingish the cases where our code takes an active role in selinux management, or just passively reports whatever selinux properties are set. mac_selinux_have() now checks whether selinux is around for the passive stuff, and mac_selinux_use() for the active stuff. The latter checks the former, plus also checks UID == 0, under the assumption that only when we run priviliged selinux management really makes sense. Fixes: #1941
2015-11-27tree-wide: expose "p"-suffix unref calls in public APIs to make gcc cleanup easyLennart Poettering
GLIB has recently started to officially support the gcc cleanup attribute in its public API, hence let's do the same for our APIs. With this patch we'll define an xyz_unrefp() call for each public xyz_unref() call, to make it easy to use inside a __attribute__((cleanup())) expression. Then, all code is ported over to make use of this. The new calls are also documented in the man pages, with examples how to use them (well, I only added docs where the _unref() call itself already had docs, and the examples, only cover sd_bus_unrefp() and sd_event_unrefp()). This also renames sd_lldp_free() to sd_lldp_unref(), since that's how we tend to call our destructors these days. Note that this defines no public macro that wraps gcc's attribute and makes it easier to use. While I think it's our duty in the library to make our stuff easy to use, I figure it's not our duty to make gcc's own features easy to use on its own. Most likely, client code which wants to make use of this should define its own: #define _cleanup_(function) __attribute__((cleanup(function))) Or similar, to make the gcc feature easier to use. Making this logic public has the benefit that we can remove three header files whose only purpose was to define these functions internally. See #2008.
2015-11-18tree-wide: sort includes in *.hThomas Hindoe Paaboel Andersen
This is a continuation of the previous include sort patch, which only sorted for .c files.
2015-11-17Merge pull request #1923 from zonque/siphashLennart Poettering
siphash24: let siphash24_finalize() and siphash24() return the result…