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2016-10-24seccomp: add new helper call seccomp_load_filter_set()Lennart Poettering
This allows us to unify most of the code in apply_protect_kernel_modules() and apply_private_devices().
2016-10-24seccomp: two fixes for the syscall set tablesLennart Poettering
"oldumount()" is not a syscall, but simply a wrapper for it, the actual syscall nr is called "umount" (and the nr of umount() is called umount2 internally). "sysctl()" is not a syscall, but "_syscall()" is. Fix this in the table. Without these changes libseccomp cannot actually translate the tables in full. This wasn't noticed before as the code was written defensively for this case.
2016-10-24seccomp: add new seccomp_init_conservative() helperLennart Poettering
This adds a new seccomp_init_conservative() helper call that is mostly just a wrapper around seccomp_init(), but turns off NNP and adds in all secondary archs, for best compatibility with everything else. Pretty much all of our code used the very same constructs for these three steps, hence unifying this in one small function makes things a lot shorter. This also changes incorrect usage of the "scmp_filter_ctx" type at various places. libseccomp defines it as typedef to "void*", i.e. it is a pointer type (pretty poor choice already!) that casts implicitly to and from all other pointer types (even poorer choice: you defined a confusing type now, and don't even gain any bit of type safety through it...). A lot of the code assumed the type would refer to a structure, and hence aded additional "*" here and there. Remove that.
2016-10-24core: rework apply_protect_kernel_modules() to use ↵Lennart Poettering
seccomp_add_syscall_filter_set() Let's simplify this call, by making use of the new infrastructure. This is actually more in line with Djalal's original patch but instead of search the filter set in the array by its name we can now use the set index and jump directly to it.
2016-10-24core: rework syscall filter set handlingLennart Poettering
A variety of fixes: - rename the SystemCallFilterSet structure to SyscallFilterSet. So far the main instance of it (the syscall_filter_sets[] array) used to abbreviate "SystemCall" as "Syscall". Let's stick to one of the two syntaxes, and not mix and match too wildly. Let's pick the shorter name in this case, as it is sufficiently well established to not confuse hackers reading this. - Export explicit indexes into the syscall_filter_sets[] array via an enum. This way, code that wants to make use of a specific filter set, can index it directly via the enum, instead of having to search for it. This makes apply_private_devices() in particular a lot simpler. - Provide two new helper calls in seccomp-util.c: syscall_filter_set_find() to find a set by its name, seccomp_add_syscall_filter_set() to add a set to a seccomp object. - Update SystemCallFilter= parser to use extract_first_word(). Let's work on deprecating FOREACH_WORD_QUOTED(). - Simplify apply_private_devices() using this functionality
2016-10-24core: move misplaced comment to the right placeLennart Poettering
2016-10-24core: simplify skip_seccomp_unavailable() a bitLennart Poettering
Let's prefer early-exit over deep-indented if blocks. Not behavioural change.
2016-10-24update-done: minor clean-upsLennart Poettering
This is a follow-up for fb8b0869a7bc30e23be175cf978df23192d59118, and makes a couple of minor clean-up changes: - The field name in the timestamp file is changed from "TimestampNSec=" to "TIMESTAMP_NSEC=". This is done simply to reflect the fact that we parse the file with the env var file parser, and hence the contents should better follow the usual capitalization of env vars, i.e. be all uppercase. - Needless negation of the errno parameter log_error_errno() and friends has been removed. - Instead of manually calculating the nsec remainder of the timestamp, use timespec_store(). - We now check whether we were able to write the timestamp file in full with fflush_and_check() the way we usually do it.
2016-10-24Merge pull request #4459 from keszybz/commandline-parsingLennart Poettering
Commandline parsing simplification and udev fix
2016-10-24Merge pull request #4469 from endocode/djalal/groups-testDjalal Harouni
test: lets add more tests to cover SupplementaryGroups= cases.
2016-10-24Merge pull request #4406 from jsynacek/jsynacek-is-enabledLennart Poettering
shared, systemctl: teach is-enabled to show install targets
2016-10-24networkd-ndisc: Don't add NDisc route for local address (#4467)Patrik Flykt
When systemd-networkd is run on the same IPv6 enabled interface where radvd is announcing prefixes, a route is being set up pointing to the interface address. As this will fail with an invalid argument error, the link is marked as failed and the following message like the following will appear in in the logs: systemd-networkd[21459]: eth1: Could not set NDisc route or address: Invalid argument systemd-networkd[21459]: eth1: Failed Should the interface be required by systemd-networkd-wait-online, network-online.target will wait until its timeout hits thereby significantly delaying system startup. The fix is to check whether the gateway address obtained from NDisc messages is equal to any of the interface addresses on the same link and not set the NDisc route in that case.
2016-10-24core: do not assert when sysconf(_SC_NGROUPS_MAX) fails (#4466)Djalal Harouni
Remove the assert and check the return code of sysconf(_SC_NGROUPS_MAX). _SC_NGROUPS_MAX maps to NGROUPS_MAX which is defined in <limits.h> to 65536 these days. The value is a sysctl read-only /proc/sys/kernel/ngroups_max and the kernel assumes that it is always positive otherwise things may break. Follow this and support only positive values for all other case return either -errno or -EOPNOTSUPP. Now if there are systems that want to re-write NGROUPS_MAX then they should not pass SupplementaryGroups= in units even if it is empty, in this case nothing fails and we just ignore supplementary groups. However if SupplementaryGroups= is passed even if it is empty we have to assume that there will be groups manipulation from our side or the kernel and since the kernel always assumes that NGROUPS_MAX is positive, then follow that and support only positive values.
2016-10-24test: lets add more tests to cover SupplementaryGroups= cases.Djalal Harouni
2016-10-24shared, systemctl: teach is-enabled to show installation targetsJan Synacek
It may be desired by users to know what targets a particular service is installed into. Improve user friendliness by teaching the is-enabled command to show such information when used with --full. This patch makes use of the newly added UnitFileFlags and adds UNIT_FILE_DRY_RUN flag into it. Since the API had already been modified, it's now easy to add the new dry-run feature for other commands as well. As a next step, --dry-run could be added to systemctl, which in turn might pave the way for a long requested dry-run feature when running systemctl start.
2016-10-24install: introduce UnitFileFlagsJan Synacek
Introduce a new enum to get rid of some boolean arguments of unit_file_* functions. It unifies the code, makes it a bit cleaner and extensible.
2016-10-23Merge pull request #4372 from evverx/fix-synced-cgroup-hierarchy-permsZbigniew Jędrzejewski-Szmek
2016-10-23tests/TEST-13-NSPAWN-SMOKE: remove an expected failure checkEvgeny Vereshchagin
https://github.com/systemd/systemd/issues/4352 has been fixed So, we don't need this workaround anymore
2016-10-23nspawn: become a new root earlyEvgeny Vereshchagin
https://github.com/torvalds/linux/commit/036d523641c66bef713042894a17f4335f199e49 > vfs: Don't create inodes with a uid or gid unknown to the vfs It is expected that filesystems can not represent uids and gids from outside of their user namespace. Keep things simple by not even trying to create filesystem nodes with non-sense uids and gids. So, we actually should `reset_uid_gid` early to prevent https://github.com/systemd/systemd/pull/4223#issuecomment-252522955 $ sudo UNIFIED_CGROUP_HIERARCHY=no LD_LIBRARY_PATH=.libs .libs/systemd-nspawn -D /var/lib/machines/fedora-rawhide -U -b systemd.unit=multi-user.target Spawning container fedora-rawhide on /var/lib/machines/fedora-rawhide. Press ^] three times within 1s to kill container. Child died too early. Selected user namespace base 1073283072 and range 65536. Failed to mount to /sys/fs/cgroup/systemd: No such file or directory Details: https://github.com/systemd/systemd/pull/4223#issuecomment-253046519 Fixes: #4352
2016-10-23nspawn: really lchown(uid/gid)Evgeny Vereshchagin
https://github.com/systemd/systemd/pull/4372#issuecomment-253723849: * `mount_all (outer_child)` creates `container_dir/sys/fs/selinux` * `mount_all (outer_child)` doesn't patch `container_dir/sys/fs` and so on. * `mount_sysfs (inner_child)` tries to create `/sys/fs/cgroup` * This fails 370 stat("/sys/fs", {st_dev=makedev(0, 28), st_ino=13880, st_mode=S_IFDIR|0755, st_nlink=3, st_uid=65534, st_gid=65534, st_blksize=4096, st_blocks=0, st_size=60, st_atime=2016/10/14-05:16:43.398665943, st_mtime=2016/10/14-05:16:43.399665943, st_ctime=2016/10/14-05:16:43.399665943}) = 0 370 mkdir("/sys/fs/cgroup", 0755) = -1 EACCES (Permission denied) * `mount_syfs (inner_child)` ignores that error and mount(NULL, "/sys", NULL, MS_RDONLY|MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_REMOUNT|MS_BIND, NULL) = 0 * `mount_cgroups` finally fails
2016-10-23basic: fallback to the fstat if we don't have access to the /proc/self/fdinfoEvgeny Vereshchagin
https://github.com/systemd/systemd/pull/4372#discussion_r83354107: I get `open("/proc/self/fdinfo/13", O_RDONLY|O_CLOEXEC) = -1 EACCES (Permission denied)` 327 mkdir("/proc", 0755 <unfinished ...> 327 <... mkdir resumed> ) = -1 EEXIST (File exists) 327 stat("/proc", <unfinished ...> 327 <... stat resumed> {st_dev=makedev(8, 1), st_ino=28585, st_mode=S_IFDIR|0755, st_nlink=2, st_uid=0, st_gid=0, st_blksize=1024, st_blocks=4, st_size=1024, st_atime=2016/10/14-02:55:32, st_mtime=2016/ 327 mount("proc", "/proc", "proc", MS_NOSUID|MS_NODEV|MS_NOEXEC, NULL <unfinished ...> 327 <... mount resumed> ) = 0 327 lstat("/proc", <unfinished ...> 327 <... lstat resumed> {st_dev=makedev(0, 34), st_ino=1, st_mode=S_IFDIR|0555, st_nlink=75, st_uid=65534, st_gid=65534, st_blksize=1024, st_blocks=0, st_size=0, st_atime=2016/10/14-03:13:35.971031263, 327 lstat("/proc/sys", {st_dev=makedev(0, 34), st_ino=4026531855, st_mode=S_IFDIR|0555, st_nlink=1, st_uid=65534, st_gid=65534, st_blksize=1024, st_blocks=0, st_size=0, st_atime=2016/10/14-03:13:39.1630 327 openat(AT_FDCWD, "/proc", O_RDONLY|O_DIRECTORY|O_CLOEXEC|O_PATH) = 11</proc> 327 name_to_handle_at(11</proc>, "sys", {handle_bytes=128}, 0x7ffe3a238604, AT_SYMLINK_FOLLOW) = -1 EOPNOTSUPP (Operation not supported) 327 name_to_handle_at(11</proc>, "", {handle_bytes=128}, 0x7ffe3a238608, AT_EMPTY_PATH) = -1 EOPNOTSUPP (Operation not supported) 327 openat(11</proc>, "sys", O_RDONLY|O_CLOEXEC|O_PATH) = 13</proc/sys> 327 open("/proc/self/fdinfo/13", O_RDONLY|O_CLOEXEC) = -1 EACCES (Permission denied) 327 close(13</proc/sys> <unfinished ...> 327 <... close resumed> ) = 0 327 close(11</proc> <unfinished ...> 327 <... close resumed> ) = 0 -bash-4.3# ls -ld /proc/ dr-xr-xr-x 76 65534 65534 0 Oct 14 02:57 /proc/ -bash-4.3# ls -ld /proc/1 dr-xr-xr-x 9 root root 0 Oct 14 02:57 /proc/1 -bash-4.3# ls -ld /proc/1/fdinfo dr-x------ 2 65534 65534 0 Oct 14 03:00 /proc/1/fdinfo
2016-10-23Merge pull request #4373 from endocode/djalal/fix-mountflagsZbigniew Jędrzejewski-Szmek
2016-10-23core: lets move the setup of working directory before group enforceDjalal Harouni
This is minor but lets try to split and move bit by bit cgroups and portable environment setup before applying the security context.
2016-10-23test: add more tests for SupplementaryGroups=Djalal Harouni
2016-10-23test: Add simple test for supplementary groupsDjalal Harouni
2016-10-23core: first lookup and cache creds then apply them after namespace setupDjalal Harouni
This fixes: https://github.com/systemd/systemd/issues/4357 Let's lookup and cache creds then apply them. We also switch from getgroups() to getgrouplist().
2016-10-22Merge pull request #4428 from lnykryn/ctrl_v2Zbigniew Jędrzejewski-Szmek
rename failure-action to emergency-action and use it for ctrl+alt+del burst
2016-10-22tree-wide: make parse_proc_cmdline() strip "rd." prefix automaticallyZbigniew Jędrzejewski-Szmek
This stripping is contolled by a new boolean parameter. When the parameter is true, it means that the caller does not care about the distinction between initrd and real root, and wants to act on both rd-dot-prefixed and unprefixed parameters in the initramfs, and only on the unprefixed parameters in real root. If the parameter is false, behaviour is the same as before. Changes by caller: log.c (systemd.log_*): changed to accept rd-dot-prefix params pid1: no change, custom logic cryptsetup-generator: no change, still accepts rd-dot-prefix params debug-generator: no change, does not accept rd-dot-prefix params fsck: changed to accept rd-dot-prefix params fstab-generator: no change, custom logic gpt-auto-generator: no change, custom logic hibernate-resume-generator: no change, does not accept rd-dot-prefix params journald: changed to accept rd-dot-prefix params modules-load: no change, still accepts rd-dot-prefix params quote-check: no change, does not accept rd-dot-prefix params udevd: no change, still accepts rd-dot-prefix params I added support for "rd." params in the three cases where I think it's useful: logging, fsck options, journald forwarding options.
2016-10-22udev: change kernel commandline option parsingZbigniew Jędrzejewski-Szmek
- do not crash if an option without value is specified on the kernel command line, e.g. "udev.log-priority" :P - simplify the code a bit - warn about unknown "udev.*" options — this should make it easier to spot typos and reduce user confusion
2016-10-22journald: convert journald to use parse_proc_cmdlineZbigniew Jędrzejewski-Szmek
This makes journald use the common option parsing functionality. One behavioural change is implemented: "systemd.journald.forward_to_syslog" is now equivalent to "systemd.journald.forward_to_syslog=1". I think it's nicer to use this way.
2016-10-22tree-wide: allow state to be passed through to parse_proc_cmdline_itemZbigniew Jędrzejewski-Szmek
No functional change.
2016-10-22Merge pull request #4455 from endocode/dongsu/l10n-catalog-koreanDaniel Mack
catalog: add more Korean translations
2016-10-22catalog: add more Korean translationsDongsu Park
Add more Korean translations of journal and DNSSEC log messages.
2016-10-22catalog: fix typo and make a clear sentenceDongsu Park
Fix typo: s/ournald.conf/journald.conf/ Change also "시스템의 다음 위치에" to "시스템을 별도 위치에" to make a clear sentence.
2016-10-22journal: remove unused variableThomas Hindoe Paaboel Andersen
2016-10-22Merge pull request #4452 from jwilk/spellingMichael Biebl
NEWS: fix typos
2016-10-22NEWS: fix typosJakub Wilk
2016-10-21journald: systemd.journald.max_level_* kernel command line options (#4427)Umut Tezduyar Lindskog
The log forward levels can be configured through kernel command line.
2016-10-21NEWS: option is ProtectKernelTunables not ProtectedKernelTunables (#4451)Djalal Harouni
2016-10-21Merge pull request #4447 from poettering/oneshotassertfixDaniel Mack
core: if the start command vanishes during runtime don't hit an assert
2016-10-21core: use emergency_action for ctr+alt+del burstLukas Nykryn
Fixes #4306
2016-10-21failure-action: generalize failure action to emergency actionLukas Nykryn
2016-10-21NEWS: update NEWS about ProtectKernelModules= option (#4445)Djalal Harouni
2016-10-21Merge pull request #4419 from keszybz/install-specifiersLennart Poettering
Fix expansion of %i, %u, %N, %n install specifiers
2016-10-21hwdb: add MOUSE_WHEEL_CLICK_COUNT for non-integer click angles (#4440)Peter Hutterer
MOUSE_WHEEL_CLICK_ANGLE has been an integer, and at least libinput (probably the only user) parses it as strict integer. For backwards compatibility, we cannot change it to a decimal number now. Add a new property to list the number of clicks for a full 360 degree rotation, to be specified in addition to the old click angle property. Clients can prefer the new one where available and calculate the decimal value to whatever precision they want.
2016-10-21sysusers: fix memleak (#4443)Evgeny Vereshchagin
Fixes: Oct 20 09:10:49 systemd-sysusers[144]: Direct leak of 20 byte(s) in 1 object(s) allocated from: Oct 20 09:10:49 systemd-sysusers[144]: #0 0x7f3565a13e60 in malloc (/lib64/libasan.so.3+0xc6e60) Oct 20 09:10:49 systemd-sysusers[144]: #1 0x7f3565526bd0 in malloc_multiply src/basic/alloc-util.h:70 Oct 20 09:10:49 systemd-sysusers[144]: #2 0x7f356552cb55 in tempfn_xxxxxx src/basic/fileio.c:1116 Oct 20 09:10:49 systemd-sysusers[144]: #3 0x7f356552c4f0 in fopen_temporary src/basic/fileio.c:1042 Oct 20 09:10:49 systemd-sysusers[144]: #4 0x7f356555e00e in fopen_temporary_label src/basic/fileio-label.c:63 Oct 20 09:10:49 systemd-sysusers[144]: #5 0x56197c4a1766 in make_backup src/sysusers/sysusers.c:209 Oct 20 09:10:49 systemd-sysusers[144]: #6 0x56197c4a6335 in write_files src/sysusers/sysusers.c:710 Oct 20 09:10:49 systemd-sysusers[144]: #7 0x56197c4ae571 in main src/sysusers/sysusers.c:1817 Oct 20 09:10:49 systemd-sysusers[144]: #8 0x7f3564dee730 in __libc_start_main (/lib64/libc.so.6+0x20730)
2016-10-21core: if the start command vanishes during runtime don't hit an assertLennart Poettering
This can happen when the configuration is changed and reloaded while we are executing a service. Let's not hit an assert in this case. Fixes: #4444
2016-10-21Revert "add networkd dbus lease info" (#4435)Zbigniew Jędrzejewski-Szmek
2016-10-21nspawn, NEWS: add missing "s" in --private-users-chown (#4438)Zbigniew Jędrzejewski-Szmek
2016-10-20sysusers: fix memleak (#4430)Evgeny Vereshchagin
Fixes: ``` ==28075== 64 bytes in 1 blocks are definitely lost in loss record 2 of 3 ==28075== at 0x4C2BAEE: malloc (vg_replace_malloc.c:298) ==28075== by 0x4C2DCA1: realloc (vg_replace_malloc.c:785) ==28075== by 0x4ED40A2: greedy_realloc (alloc-util.c:57) ==28075== by 0x4E90F87: extract_first_word (extract-word.c:78) ==28075== by 0x4E91813: extract_many_words (extract-word.c:270) ==28075== by 0x10FE93: parse_line (sysusers.c:1325) ==28075== by 0x11198B: read_config_file (sysusers.c:1640) ==28075== by 0x111EB8: main (sysusers.c:1773) ==28075== ```
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