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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.
2014-06-16macro: add DISABLE_WARNING_SHADOWDavid Herrmann
As it turns out, we cannot use _Pragma in compound-statements. Therefore, constructs like MIN(MAX(a, b), x) will warn due to shadowed variable declarations. The DISABLE_WARNING_SHADOW macro can be used to suppress these. Note that using UNIQUE(_var) does not work either as GCC uses the last line of a macro-expansion for __LINE__, therefore, still causing both macros to have the same variables. We could use different variable-names for MIN and MAX, but that just hides the problem and still fails for MIN(something(MIN(a, b)), c). The only working solution is to use __COUNTER__ and pass it pre-evaluated as extra argument to a macro to use as name-prefix. This, however, makes all these macros much more complicated so I'll go with manual DISABLE_WARNING_SHADOW so far.
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".
2014-06-16tmpfiles: set up selinux label proeprly when creating fifosLennart Poettering
2014-06-16update TODOLennart Poettering
2014-06-16build-sys: add missing Makefile linkLennart Poettering
2014-06-16units: add a service to invoke ldconfig on system updates at bootLennart Poettering
2014-06-16units: drop RefuseManualStart= from a couple of update servicesLennart Poettering
The only update service we really need to guard like this is systemd-tmpfiles-setup.service since if invoked manually might create /var/run/nologin and thus blocking the user from login. The other services are pretty much idempotent and don't suffer by this problem, hence let's simplify them.
2014-06-16update TODOLennart Poettering
2014-06-16mount: add new SloppyOptions= setting for mount units, mapping to mount(8)'s ↵Lennart Poettering
"-s" switch
2014-06-16mount: tell /bin/mount to never touch /etc/mtabLennart Poettering
/etc/mtab should die die die. It's sad enough util-linux still contains support for it, but we don't have to partake in that charade, so let's turn this off. This is in-line with the fact that since years we already have been "tainting" systemd if we detect /etc/mtab not being a symlink... Of course, util-linux is currently broken, and still touches /etc/mtab, weven if we pass "--no-mtab" to it: https://bugzilla.redhat.com/show_bug.cgi?id=1109367 But hey, let's hope that gets fixed quickly, even if total removal of /etc/mtab support from util-linux might not happen so quickly...
2014-06-15units: bring systemd-tmpfiles-setup-dev.service closer to ↵Lennart Poettering
systemd-tmpfiles-setup.service Among other things, order both services relative to systemd-sysusers.service in the same direction.
2014-06-15tmpfiles: create /etc/resolv.conf as link to networkd's version, if it ↵Lennart Poettering
doesn't exist If /etc/resolv.conf doesn't exist it's better than nothing to make it point to networkd's version.
2014-06-14sysusers: order before tmpfiles which need the idsKay Sievers
2014-06-14networkd: link - flush all pending NEWLINK events before trying to matchTom Gundersen
We could still have an old interface name and/or mac address when libudev tells us that the device is initialized, as the up-to-date info could still be on its way from the kernel.
2014-06-14Revert "Revert "networkd: netdev - set predictable mac address when creating ↵Tom Gundersen
netdev"" This reverts (and rewrites) commit 7d95c772cba1836545459760273b13f2e01dd2a8. The issue blocking this feature has now been fixed in the kernel, and backported to the various stable kernels. Our netdevs will now have stable MAC addresses, even if one is not specified.
2014-06-14networkd: netdev - allow setting MACAddress in .netdev filesTom Gundersen
It may sometimes be necessary to specify the MAC address of a netdev. Let us set the correct one from the get-go, rather than having the kernel generate a random one, and then change it after.
2014-06-14networkd: add assertTom Gundersen
It should not be possible to have a DHCP lease on a link without also having an associated network. Add assert() to avoid compiler warnings. Reported by Thomas H. P. Andersen
2014-06-13networkd: link - check returned value from set_lease_poolThomas Hindoe Paaboel Andersen
2014-06-13Fix spelling mistake, scirpt --> scriptColin Ian King
2014-06-13core: don't complain at early boot if /etc/mtab is not the right symlinkLennart Poettering
When we boot up with an empty /etc it's ok if the symlink doesn't exist. We will create it later with tmpfiles.
2014-06-13tmpfiles: always use relative symlinks from tmpfiles snippetsLennart Poettering
2014-06-13os-release: define /usr/lib/os-release as fallback for /etc/os-releaseLennart Poettering
The file should have been in /usr/lib/ in the first place, since it describes the OS container in /usr (and not the configuration in /etc), hence, let's support os-release files in /usr/lib as fallback if no version in /etc exists, following the usual override logic. A prior commit already enabled tmpfiles to create /etc/os-release as a symlink to /usr/lib/os-release should it be missing, thus providing nice compatibility with applications only checking in /etc. While it's probably a good idea if all apps check both locations via a fallback logic, it is only necessary in the early boot process, as long as the /etc/os-release symlink has not been restored, in case we boot with an empty /etc.
2014-06-13sysusers: always treat ENOENT as entry-not-found when doing NSS callsLennart Poettering
For most NSS calls it is documented that they return NULL + errno=0 when an entry is not found. However, in reality it appears to be common to return NULL + errno=ENOENT, instead. Handle that correctly, and don't consider ENOENT a systematic error.
2014-06-13rpm: add RPM macros to apply sysusers, sysctl, and binfmt drop-insLennart Poettering
With this in place RPMs can make sure that whatever they drop in is immeidately applied, and not delayed until next reboot. This also moves systemd-sysusers back to /usr/bin, since hardcoding the path to /usr/lib in the macros would mean compatibility breaks in future, should we turn sysusers into a command that is actually OK for people to call directly. And given that that is quite likely to happen (since it is useful to prepare images with its --root= switch), let's just prepare for it.
2014-06-13rpm: don't hardcode the binary paths in the macros, rely on $PATHLennart Poettering
this gives us a little bit more freedom to move things around later on, as we don't hardcode the systemd paths in old RPMs that shall work with new systemds.
2014-06-13sd-dhcp-server: test - skip when lacking permsTom Gundersen
2014-06-13install: fix invalid free() in unit_file_mask()Andreas Henriksson
int unit_file_mask(...) in ./src/shared/install.c calls get_config_path(...) which can in 4 error cases return without setting "ret", and thus "prefix" can be uninitialized when unit_file_mask(...) finishes (which it does directly after the error is returned from get_config_path(...)).
2014-06-13udev: fix invalid free() in enable_name_policy()Andreas Henriksson
static bool enable_name_policy(...) in ./src/udev/net/link-config.c calls proc_cmdline(...) to get "line" initialized, but proc_cmdline(...) does not guarantee that atleast when both conditions (detect_container(NULL) > 0) and read_full_file(...) returned < 0.
2014-06-13core: fix invalid free() in killall()Andreas Henriksson
static int killall(....) in ./src/core/killall.c tries to get "s" initialized by calling get_process_comm(...) which calls read_one_line_file(...) which if it fails will mean it is left uninitialized. It is then used in argument to strna(s) call where it is dereferenced(!), in addition to nothing else initializing it before the scope it is in finishes.
2014-06-13sd-dhcp-client: fix invalid free() in client_send_request()Andreas Henriksson
static int client_send_request(...) in ./src/libsystemd-network/sd-dhcp-client.c tries to initialize "request" by calling client_message_init(...), which has atleast 5 error cases where it can return without that happening. This leads to the function finishing without "request" being initialized.
2014-06-13networkd: link - left-align debug messagesTom Gundersen
Still add some whitespace betwen ifname and the message to get the messages aligned (as I find it easier to spot specific messages this way).
2014-06-13networkd: add dhcp server supportTom Gundersen
When enabled in [Network] it will set up a dhcp server on the interface, listening on one of its statically configured IPv4 addresses and with a fixed size pool of leases determined from it. Example: [Match] Name=ve-arch-tree [Network] Address=192.168.12.5/24 DHCPServer=yes [Route] Gateway=192.168.12.5 Destination=192.168.12.0/24 In this case we will configure ve-arch-tree with the address 192.168.12.5 and hand out addresses in the range 192.168.12.6 - 192.168.12.38. In the future, we should (as suggested by Lennart) introduce a syntax to pick the server address automatically.
2014-06-13sd-dhcp-server: add RELEASE supportTom Gundersen
2014-06-13sd-dhcp-server: add dummy DECLINE supportTom Gundersen
2014-06-13sd-dhcp-server: track bound leasesTom Gundersen
Make sure we don't hand out the same IP twice. We still don't handle lease expiry.
2014-06-13sd-dhcp-server: add support for clients requesting lease lifetimeTom Gundersen
2014-06-13sd-dhcp-server: add basic NAK supportTom Gundersen
2014-06-13sd-dhcp-server: add basic REQUEST/ACK supportTom Gundersen
2014-06-13sd-dhcp-server: add basic DISCOVER/OFFER supportTom Gundersen
2014-06-13sd-dhcp-server: add support for sending messagesTom Gundersen
2014-06-13sd-dhcp-server: add support for setting the server addressTom Gundersen
2014-06-13sd-dhcp-server: bind to raw socket for sendingTom Gundersen
We would like to use the UDP socket, but we cannot as we need to specify the MAC address manually.
2014-06-13sd-dhcp-server: add basic message parsingTom Gundersen
Parse the maximum message size the client can accept and the client id, falling back to sane defaults if they are not set.
2014-06-13sd-dhcp-server: add basic message handling and verificationTom Gundersen
2014-06-13sd-dhcp-server: bind to a given interfaceTom Gundersen
We will (at least at first), restrict our focus to running the server on at most one interface.
2014-06-13sd-dhcp-server: add basic functionality for starting/stopping serverTom Gundersen
Bind to UDP socket and listen for messages, discarding anything we receive.
2014-06-13sd-dhcp-server: add basic functionality for creating/destroying server instanceTom Gundersen
2014-06-13dhcp-network: allow UDP socket to listen on any addressTom Gundersen
For this to work nicely we need to use REUSEADDR so that more than one socket can be open at the same time. Also, we request the ifindex to be appended to incoming messages, so we know whence it came.
2014-06-13tmpfiles: add minimal tmpfiles snippet to rebuild the most essential stuff ↵Lennart Poettering
from /etc