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2015-06-24sd-netlink: don't export internal type-system detailsDavid Herrmann
The kernel bonding layer allows passing an array of ARP IP targets as bond-configuration. Due to the weird implementation of arrays in netlink (which we haven't figure out a generic way to support, yet), we usually hard-code the supported array-sizes. However, this should not be exported from sd-netlink. Instead, make sure the caller just uses it's current hack of enumerating the types, and the sd-netlink core will have it's own list of supported array-sizes (to be removed in future extensions, btw!). If either does not match, we will just return a normal error. Note that we provide 2 constants for ARP_IP_TARGETS_MAX now. However, both have very different reasons: - the constant in netdev-bond.c is used to warn the user that the given number of targets might not be supported by the kernel (even though the kernel might increase that number at _any_ time) - the constant in sd-netlink is solely used due to us missing a proper array implementation. Once that's supported in the type-system, it can be removed without notice Last but not least, this patch turns the log_error() into a log_warning(). Given that the previous condition was off-by-one, anyway, it never hit at the right time. Thus, it was probably of no real use.
2015-06-24sd-netlink: don't treat NULL as root type-systemDavid Herrmann
Explicitly export the root type-system to the type-system callers. This avoids treating NULL as root, which for one really looks backwards (NULL is usually a leaf, not root), and secondly prevents us from properly debugging calling into non-nested types. Also rename the root to "type_system_root". Once we support more than rtnl, well will have to revisit that, anyway.
2015-06-24sd-netlink: don't treat type_system->count==0 as invalidDavid Herrmann
Empty type-systems are just fine. Avoid the nasty hack in union-type-systems that treat empty type-systems as invalid. Instead check for the actual types-array and make sure it's non-NULL (which is even true for empty type-systems, due to "empty_types" array).
2015-06-24sd-netlink: make sure the root-level type is nestedDavid Herrmann
In sd-netlink-message, we always guarantee that the currently selected type-system is non-NULL. Otherwise, we would be unable to parse any types in the current container level. Hence, this assertion must be true: message->container_type_system[m->n_containers] != NULL During message_new() we currently do not verify that this assertion is true. Instead, we blindly access nl_type->type_system and use it (which might be NULL for basic types and unions). Fix this, by explicitly checking that the root-level type is nested. Note that this is *not* a strict requirement of netlink, but it's a strict requirement for all message types we currently support. Furthermore, all the callers of message_new() already verify that only supported types are passed, therefore, this is a pure cosmetic check. However, it might be needed on the future, so make sure we don't trap into this once we change the type-system.
2015-06-24sd-netlink: drop NETLINK_TYPE_METADavid Herrmann
The NETLINK_TYPE_META pseudo-type is actually equivalent to an empty nested type. Drop it and define an empty type-system instead. This also has the nice side-effect that m->container_type_system[0] is never NULL (which has really nasty side-effects if you try to read attributes).
2015-06-24sd-netlink: turn 'max' into 'count' to support empty type-systemsDavid Herrmann
Right now we store the maximum type-ID of a type-system. This prevents us from creating empty type-systems. Store the "count" instead, which should be treated as max+1. Note that type_system_union_protocol_get_type_system() currently has a nasty hack to treat empty type-systems as invalid. This might need some modification later on as well.
2015-06-24sd-netlink: avoid casting size_t into intDavid Herrmann
size_t is usually 64bit and int 32bit on a 64bit machine. This probably does not matter for netlink message sizes, but nevertheless, avoid hard-coding it anywhere.
2015-06-24sd-netlink: make NLTypeSystem internalDavid Herrmann
Same as NLType, move NLTypeSystem into netlink-types.c and hide it from the outside. Provide an accessor function for the 'max' field that is used to allocate suitable array sizes. Note that this will probably be removed later on, anyway. Once we support bigger type-systems, it just seems impractical to allocate such big arrays for each container entry. An RBTree would probably do just fine.
2015-06-24sd-netlink: make NLType internalDavid Herrmann
If we extend NLType to support arrays and further extended types, we really want to avoid hard-coding the type-layout outside of netlink-types.c. We already avoid accessing nl_type->type_system outside of netlink-types.c, extend this to also avoid accessing any other fields. Provide accessor functions for nl_type->type and nl_type->size and then move NLType away from the type-system header. With this in place, follow-up patches can safely turn "type_system" and "type_system_union" into a real "union { }", and then add another type for arrays.
2015-06-24sd-netlink: don't access type->type_system[_union] directlyDavid Herrmann
Make sure we never access type->type_system or type->type_system_union directly. This is an implementation detail of the type-system and we should always use the accessors. Right now, they only exist for 2-level accesses (type-system to type-system). This patch introduces the 1-level accessors (type to type-system) and makes use of it. This patch makes sure the proper assertions are in place, so we never accidentally access sub-type-systems for non-nested/union types. Note that this places hard-asserts on the accessors. This should be fine, as we expect callers to only access sub type-systems if they *know* they're dealing with nested types.
2015-06-24sd-netlink: rename NLA_ to NETLINK_TYPE_David Herrmann
The NLA_ names are used to name real datatypes we extract out of netlink messages. The kernel has an internal enum with the same names (NLA_foobar), which is *NOT* binary compatible to our types. Furthermore, we support a different set of types than the kernel (as we try to treat some kernel peculiarities as our own types to simplify the API). Rename NLA_ to NETLINK_TYPE_ to make clear that this is our own set of types.
2015-06-23build-sys: add all source files and no built files to the tar ballKay Sievers
This fully synchronizes the content of a "make dist" and a "git archive" tar ball. http://lists.freedesktop.org/archives/systemd-devel/2015-June/033214.html
2015-06-21export sd_bus_object_added() / _removed()Geert Jansen
Fixes #306.
2015-06-17bus: fix installing DRIVER matches on kdbusDavid Herrmann
In kdbus we still have to support org.freedesktop.DBus matches even though there is no real bus driver. The reason is that bus-control.c turns NameOwnerChanged matches into proper kdbus matches. If we drop DRIVER matches early, we will never match on name-changes for kdbus. Two ways to fix this: 1) Install DRIVER matches on kdbus (which is the simple way our and which is what this patch does). 2) Properly fix the scope-detection to let NameOwnerChanged matches through (or better: block anything with Member!=NameOwnerChanged).
2015-06-17turn kdbus support into a runtime optionKay Sievers
./configure --enable/disable-kdbus can be used to set the default behavior regarding kdbus. If no kdbus kernel support is available, dbus-dameon will be used. With --enable-kdbus, the kernel command line option "kdbus=0" can be used to disable kdbus. With --disable-kdbus, the kernel command line option "kdbus=1" is required to enable kdbus support.
2015-06-17libsystemd: remove list of symbols to export only in the futureKay Sievers
2015-06-17Merge pull request #246 from smcv/xpg-not-xdgLennart Poettering
Stop talking about the "XDG" version of basename()
2015-06-17Stop talking about the "XDG" version of basename()Simon McVittie
XDG refers to X Desktop Group, a former name for freedesktop.org. This group is responsible for specifications like basedirs, .desktop files and icon naming, but as far as I know, it has never tried to redefine basename(). I think these references were meant to say XPG (X/Open Portability Guide), a precursor of POSIX. POSIX is better-known and less easily confused with XDG, and is how the basename(3) man page describes the libgen.h version of basename(). The other version of basename() is glibc-specific and is described in basename(3) as "the GNU version"; specifically mention that version, to disambiguate.
2015-06-17Merge pull request #244 from poettering/sdbus-suppress-localDavid Herrmann
sd-bus: suppress installing local bus matches server side
2015-06-17sd-bus: suppress installing local bus matches server sideLennart Poettering
Matches that can only match against messages from the org.freedesktop.DBus.Local service (or the local interfaces or path) should never be installed server side, suppress them hence. Similar, on kdbus matches that can only match driver messages shouldn't be passed to the kernel.
2015-06-17Merge pull request #239 from dvdhrm/event-assertLennart Poettering
sd-event: make errors on EPOLL_CTL_DEL pseudo-fatal
2015-06-17sd-event: make errors on EPOLL_CTL_DEL pseudo-fatalDavid Herrmann
If we call EPOLL_CTL_DEL, we *REALLY* expect the file-descriptor to be present in that given epoll-set. We actually track such state via our s->io.registered flag, so it better be true. Make sure if that's not true, we treat it similar to assert_return() (ie., print a loud warning).
2015-06-17build-sys: hide magic section variables from exported symbolsKay Sievers
https://github.com/systemd/systemd/issues/234
2015-06-16Merge pull request #197 from dvdhrm/hashmapMichal Schmidt
hashmap: fix iterators to not skip entries
2015-06-16sd-bus: use proper cleanup macroUmut Tezduyar Lindskog
2015-06-15everywhere: port everything to sigprocmask_many() and friendsLennart Poettering
This ports a lot of manual code over to sigprocmask_many() and friends. Also, we now consistly check for sigprocmask() failures with assert_se(), since the call cannot realistically fail unless there's a programming error. Also encloses a few sd_event_add_signal() calls with (void) when we ignore the return values for it knowingly.
2015-06-14hashmap: fix iterators to not skip entriesDavid Herrmann
Currently, the HASHMAP iterators stop at the first NULL entry in a hashmap. This is non-obvious and breaks users like sd-device, which legitimately store NULL values in a hashmap. Fix all the iterators by taking a pointer to the value storage, instead of returning it. The iterators now return a boolean that tells whether the end of the list was reached. Current users of HASHMAP_FOREACH() are *NOT* changed to explicitly check for NULL. If it turns out, there were users that inserted NULL into hashmaps, but didn't properly check for it during iteration, then we really want to find those and fix them.
2015-06-13sd-netlink: socket - move some functions from main source fileTom Gundersen
2015-06-13sd-netlink: message - split up source fileTom Gundersen
Split netlink-socket.c and rtnl-message.c from netlink-message.c.
2015-06-13sd-netlink: drop the write-queueTom Gundersen
AF_NETLINK is not write-buffered, so this was actually never used.
2015-06-13sd-netlink: rename from sd-rtnlTom Gundersen
2015-06-11Merge pull request #171 from teg/rtnl-broadcast-2David Herrmann
sd-rtnl: make joining broadcast groups implicit
2015-06-11sd-rtnl: make joining broadcast groups implicitTom Gundersen
2015-06-11sd-rtnl: use netlink header rather than ucred in socket_recv_message()Tom Gundersen
Lets us simplify the function and drop SO_PASSCRED. Thanks to Alexander Larsson and David Herrmann.
2015-06-11Merge pull request #158 from ssahani/netLennart Poettering
Net
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/
2015-06-11sd-network: fix CID 1306198Susant Sahani
2015-06-10Merge pull request #148 from teg/sd-network-raceLennart Poettering
sd-network: allow the state dir to be created after the monitor
2015-06-10bus: we now support path_namespace=/David Herrmann
Our bloom-filters support root-path matching. Make sure we properly add the path_namespace= tag.
2015-06-10bus: fix pattern matchingDavid Herrmann
DBus-spec defines two different pattern matchings: 1) Path and namespace prefix matching. In this case, A matches B either if both are equal, or if B is fully included in the namespace of A. In other words, A has to be a prefix of B, but end with a separator character (or the following character in B must be one). This is used for path_namespace= and arg0namespace= 2) The other pattern matching is used for arg0path= which does a two-way matching. That is, A must be a prefix of B, or B a prefix of A. Furthermore, the prefix must end with a separator. Fix the sd-bus helpers to reflect that. The 'simple_' and 'complex_' prefixes don't make any sense now, but.. eh..
2015-06-10bus: fix test-bus-kerne-bloom.c to match properlyDavid Herrmann
Make sure we actually verify our match-rules are executed properly. Right now all we test is the bloom-matches, which are non-reliable as they leave through false-positives.
2015-06-10bus: fix arg0path= two-way matchingDavid Herrmann
DBus spec clearly defines arg0path= to be a two-way matching. That is, either the matcher or the matchee can be a prefix of the other to match. This is not possible to implement with bloom-filters. Instead, we'd have to add a separate filter for each prefix. This is non-trivial, though. Hence, just skip the match for now and match locally.
2015-06-10bus: fix bloom_add_prefixes() to add all required dataDavid Herrmann
Lets look at an example where we add arg0="/foo/bar/waldo" to a bloom-filter. The following strings are added: "arg0:/foo/bar/waldo" "arg0-slash-prefix:/foo/bar" "arg0-slash-prefix:/foo" Two problems arise: 1) If we match on "arg0path=/foo/bar/waldo", the dbus-spec explicitly states that equal strings are also considered prefixes. However, in the bloom-match, we can only provide a single match-filter. Therefore, we have to add "arg0-slash-prefix:/foo/bar/waldo" there, but this never occured in the bloom-mask of the message. Hence, this patch makes sure bloom_add_prefixes() adds the full path as prefix, too. 2) If we match on "arg0path=/foo/", the dbus-spec states that arg0path does prefix-matching with the trailing slash _included_, unlike path_namespace= matches, which does *not* include them. This is inconsistent, but we have to support the specs. Therefore, we must add prefixes with _and_ without trailing separators. Hence, this patch makes sure bloom_add_prefixes() adds all prefixes with the trailing slash included. The final set of strings added therefore is: "arg0:/foo/bar/waldo" "arg0-slash-prefix:/foo/bar/waldo" "arg0-slash-prefix:/foo/bar/" "arg0-slash-prefix:/foo/bar" "arg0-slash-prefix:/foo/" "arg0-slash-prefix:/foo" "arg0-slash-prefix:/"
2015-06-10sd-network: allow the state dir to be created after the monitorTom Gundersen
We now listen for new subdirs of /run/systemd, and /run/systemd/netif in case /run/systemd/netif/links does not exist.
2015-06-10util: introduce CMSG_FOREACH() macro and make use of it everywhereLennart Poettering
It's only marginally shorter then the usual for() loop, but certainly more readable.
2015-06-10Merge pull request #142 from teg/sd-network-unref-NULLLennart Poettering
sd-network: allow NULL in sd_network_monitor_unref
2015-06-10sd-network: allow NULL in sd_network_monitor_unrefTom Gundersen
Match rest of codebase, we always allow unref'ing NULL.
2015-06-10Merge pull request #85 from keszybz/selinux-contextZbigniew Jędrzejewski-Szmek
2015-06-10sd-bus: remove ucred parameter from bus_message_from_header() since we don't ↵Lennart Poettering
use it anymore
2015-06-10sd-bus: fix early exit when we lack all data in bus_get_owner_creds_dbus1()Lennart Poettering