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Commit Graph

3008 Commits

Author SHA1 Message Date
Zbigniew Jędrzejewski-Szmek
f6940bc34a man: describe systemd-coredump --backtrace 2017-02-15 00:32:26 -05:00
Zbigniew Jędrzejewski-Szmek
988e89ee3b coredump: implement logging of external backtraces with --backtrace
This is useful for example for Python progams. By installing a python
sys.execepthook we can store the backtrace in the journal. We gather the
backtrace in the python process, and call systemd-coredump to attach additional
fields (COREDUMP_COMM, COREDUMP_EXE, COREDUMP_UNIT, COREDUMP_USER_UNIT,
COREDUMP_OWNER_UID, COREDUMP_SLICE, COREDUMP_CMDLINE, COREDUMP_CGROUP,
COREDUMP_OPEN_FDS, COREDUMP_PROC_STATUS, COREDUMP_PROC_MAPS,
COREDUMP_PROC_LIMITS, COREDUMP_PROC_MOUNTINFO, COREDUMP_CWD, COREDUMP_ROOT,
COREDUMP_ENVIRON, COREDUMP_CONTAINER_CMDLINE). This could also be done in the
python process, but doing this in systemd-coredump saves quite a bit of
duplicate work and unifies the handling of various tricky fields like
COREDUMP_CONTAINER_CMDLINE in one place.

(Of course this applies to any other language which does not dump cores
but wants to log a traceback, e.g. ruby.)

journal entry:
    _TRANSPORT=journal
    _UID=1002
    _GID=1002
    _CAP_EFFECTIVE=0
    _AUDIT_LOGINUID=1002
    _SYSTEMD_OWNER_UID=1002
    _SYSTEMD_SLICE=user-1002.slice
    _SYSTEMD_USER_SLICE=-.slice
    _SELINUX_CONTEXT=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023
    _BOOT_ID=1531fd22ec84429e85ae888b12fadb91
    _MACHINE_ID=519a16632fbd4c71966ce9305b360c9c
    _HOSTNAME=laptop
    _AUDIT_SESSION=1
    _SYSTEMD_UNIT=user@1002.service
    _SYSTEMD_INVOCATION_ID=3c4238d790a44aca9576ecdb2c7576d3
    COREDUMP_UNIT=user@1002.service
    COREDUMP_USER_UNIT=gnome-terminal-server.service
    COREDUMP_UID=1002
    COREDUMP_GID=1002
    COREDUMP_OWNER_UID=1002
    COREDUMP_SLICE=user-1002.slice
    COREDUMP_CGROUP=/user.slice/user-1002.slice/user@1002.service/gnome-terminal-server.service
    COREDUMP_PROC_LIMITS=Limit                     Soft Limit           Hard Limit           Units
                         Max cpu time              unlimited            unlimited            seconds
                         Max file size             unlimited            unlimited            bytes
                         Max data size             unlimited            unlimited            bytes
                         Max stack size            8388608              unlimited            bytes
                         Max core file size        unlimited            unlimited            bytes
                         Max resident set          unlimited            unlimited            bytes
                         Max processes             15413                15413                processes
                         Max open files            4096                 4096                 files
                         Max locked memory         65536                65536                bytes
                         Max address space         unlimited            unlimited            bytes
                         Max file locks            unlimited            unlimited            locks
                         Max pending signals       15413                15413                signals
                         Max msgqueue size         819200               819200               bytes
                         Max nice priority         0                    0
                         Max realtime priority     0                    0
                         Max realtime timeout      unlimited            unlimited            us
    COREDUMP_PROC_CGROUP=1:name=systemd:/
                         0::/user.slice/user-1002.slice/user@1002.service/gnome-terminal-server.service
    COREDUMP_PROC_MOUNTINFO=17 39 0:17 / /sys rw,nosuid,nodev,noexec,relatime shared:6 - sysfs sysfs rw,seclabel
                            18 39 0:4 / /proc rw,nosuid,nodev,noexec,relatime shared:5 - proc proc rw
                            19 39 0:6 / /dev rw,nosuid shared:2 - devtmpfs devtmpfs rw,seclabel,size=1972980k,nr_inodes=493245,mode=755
                            20 17 0:18 / /sys/kernel/security rw,nosuid,nodev,noexec,relatime shared:7 - securityfs securityfs rw
                            21 19 0:19 / /dev/shm rw,nosuid,nodev shared:3 - tmpfs tmpfs rw,seclabel
                            22 19 0:20 / /dev/pts rw,nosuid,noexec,relatime shared:4 - devpts devpts rw,seclabel,gid=5,mode=620,ptmxmode=000
                            23 39 0:21 / /run rw,nosuid,nodev shared:12 - tmpfs tmpfs rw,seclabel,mode=755
                            24 17 0:22 / /sys/fs/cgroup rw,nosuid,nodev,noexec,relatime shared:8 - cgroup2 cgroup rw
                            25 17 0:23 / /sys/fs/pstore rw,nosuid,nodev,noexec,relatime shared:9 - pstore pstore rw,seclabel
                            36 17 0:24 / /sys/kernel/config rw,relatime shared:10 - configfs configfs rw
                            39 0 0:26 /root / rw,relatime shared:1 - btrfs /dev/mapper/fedora-root2 rw,seclabel,ssd,space_cache,subvolid=257,subvol=/root
                            26 17 0:16 / /sys/fs/selinux rw,relatime shared:11 - selinuxfs selinuxfs rw
                            27 19 0:15 / /dev/mqueue rw,relatime shared:13 - mqueue mqueue rw,seclabel
                            28 18 0:30 / /proc/sys/fs/binfmt_misc rw,relatime shared:14 - autofs systemd-1 rw,fd=35,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_ino=13663
                            29 17 0:7 / /sys/kernel/debug rw,relatime shared:15 - debugfs debugfs rw,seclabel
                            30 19 0:31 / /dev/hugepages rw,relatime shared:16 - hugetlbfs hugetlbfs rw,seclabel
                            31 18 0:32 / /proc/fs/nfsd rw,relatime shared:17 - nfsd nfsd rw
                            32 28 0:33 / /proc/sys/fs/binfmt_misc rw,relatime shared:18 - binfmt_misc binfmt_misc rw
                            57 39 0:34 / /tmp rw,relatime shared:19 - tmpfs none rw,seclabel
                            61 57 0:35 / /tmp/test rw,relatime shared:20 - autofs systemd-1 rw,fd=48,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_ino=18251
                            59 39 8:1 / /boot rw,relatime shared:21 - ext4 /dev/sda1 rw,seclabel,data=ordered
                            60 39 253:2 / /home rw,relatime shared:22 - ext4 /dev/mapper/fedora-home rw,seclabel,data=ordered
                            65 39 0:37 / /var/lib/nfs/rpc_pipefs rw,relatime shared:23 - rpc_pipefs sunrpc rw
                            136 23 0:39 / /run/user/1002 rw,nosuid,nodev,relatime shared:91 - tmpfs tmpfs rw,seclabel,size=397432k,mode=700,uid=1002,gid=1002
                            211 23 0:41 / /run/user/42 rw,nosuid,nodev,relatime shared:163 - tmpfs tmpfs rw,seclabel,size=397432k,mode=700,uid=42,gid=42
                            329 136 0:44 / /run/user/1002/gvfs rw,nosuid,nodev,relatime shared:277 - fuse.gvfsd-fuse gvfsd-fuse rw,user_id=1002,group_id=1002
                            287 61 253:3 / /tmp/test rw,relatime shared:236 - ext4 /dev/mapper/fedora-test rw,seclabel,data=ordered
                            217 23 0:42 / /run/user/1000 rw,nosuid,nodev,relatime shared:168 - tmpfs tmpfs rw,seclabel,size=397432k,mode=700,uid=1000,gid=1000
                            225 217 0:43 / /run/user/1000/gvfs rw,nosuid,nodev,relatime shared:175 - fuse.gvfsd-fuse gvfsd-fuse rw,user_id=1000,group_id=1000
    COREDUMP_ROOT=/
    PRIORITY=2
    CODE_FILE=src/coredump/coredump.c
    SYSLOG_IDENTIFIER=lt-systemd-coredump
    _COMM=lt-systemd-core
    _SYSTEMD_CGROUP=/user.slice/user-1002.slice/user@1002.service/gnome-terminal-server.service
    _SYSTEMD_USER_UNIT=gnome-terminal-server.service
    MESSAGE_ID=1f4e0a44a88649939aaea34fc6da8c95
    CODE_FUNC=process_traceback
    COREDUMP_COMM=python3
    COREDUMP_EXE=/usr/bin/python3.5
    COREDUMP_CMDLINE=python3 systemd_coredump_exception_handler.py
    COREDUMP_CWD=/home/zbyszek/src/systemd-coredump-python
    COREDUMP_RLIMIT=-1
    COREDUMP_OPEN_FDS=0:/dev/pts/1
                      pos:	0
                      flags:	0102002
                      mnt_id:	22

                      1:/dev/pts/1
                      pos:	0
                      flags:	0102002
                      mnt_id:	22

                      2:/dev/pts/1
                      pos:	0
                      flags:	0102002
                      mnt_id:	22
    CODE_LINE=1284
    COREDUMP_SIGNAL=ZeroDivisionError: division by zero
    COREDUMP_ENVIRON=LANG=en_US.utf8
                     DISPLAY=:0
                     ...
                     MANWIDTH=90
                     LC_MESSAGES=en_US.utf8
                     PYTHONPATH=.
                     _=/usr/bin/python3
    COREDUMP_PID=14498
    COREDUMP_PROC_STATUS=Name:	python3
                         Umask:	0002
                         State:	S (sleeping)
                         Tgid:	14498
                         Ngid:	0
                         Pid:	14498
                         PPid:	16245
                         TracerPid:	0
                         Uid:	1002	1002	1002	1002
                         Gid:	1002	1002	1002	1002
                         FDSize:	64
                         Groups:
                         NStgid:	14498
                         NSpid:	14498
                         NSpgid:	14498
                         NSsid:	16245
                         VmPeak:	   34840 kB
                         VmSize:	   34792 kB
                         VmLck:	       0 kB
                         VmPin:	       0 kB
                         VmHWM:	    9332 kB
                         VmRSS:	    9332 kB
                         RssAnon:	    4872 kB
                         RssFile:	    4460 kB
                         RssShmem:	       0 kB
                         VmData:	    5012 kB
                         VmStk:	     136 kB
                         VmExe:	       4 kB
                         VmLib:	    5452 kB
                         VmPTE:	      84 kB
                         VmPMD:	      12 kB
                         VmSwap:	       0 kB
                         HugetlbPages:	       0 kB
                         Threads:	1
                         SigQ:	0/15413
                         SigPnd:	0000000000000000
                         ShdPnd:	0000000000000000
                         SigBlk:	0000000000000000
                         SigIgn:	0000000001001000
                         SigCgt:	0000000180000002
                         CapInh:	0000000000000000
                         CapPrm:	0000000000000000
                         CapEff:	0000000000000000
                         CapBnd:	0000003fffffffff
                         CapAmb:	0000000000000000
                         Seccomp:	0
                         Cpus_allowed:	f
                         Cpus_allowed_list:	0-3
                         Mems_allowed:	00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000000,00000001
                         Mems_allowed_list:	0
                         voluntary_ctxt_switches:	2
                         nonvoluntary_ctxt_switches:	47
    COREDUMP_PROC_MAPS=55cb7b7fe000-55cb7b7ff000 r-xp 00000000 00:1a 5289186                    /usr/bin/python3.5
                       55cb7b9ff000-55cb7ba00000 r--p 00001000 00:1a 5289186                    /usr/bin/python3.5
                       55cb7ba00000-55cb7ba01000 rw-p 00002000 00:1a 5289186                    /usr/bin/python3.5
                       55cb7c007000-55cb7c189000 rw-p 00000000 00:00 0                          [heap]
                       7f4da2d51000-7f4da2d54000 r-xp 00000000 00:1a 5279150                    /usr/lib64/python3.5/lib-dynload/resource.cpython-35m-x86_64-linux-gnu.so
                       7f4da2d54000-7f4da2f53000 ---p 00003000 00:1a 5279150                    /usr/lib64/python3.5/lib-dynload/resource.cpython-35m-x86_64-linux-gnu.so
                       7f4da2f53000-7f4da2f54000 r--p 00002000 00:1a 5279150                    /usr/lib64/python3.5/lib-dynload/resource.cpython-35m-x86_64-linux-gnu.so
                       7f4da2f54000-7f4da2f55000 rw-p 00003000 00:1a 5279150                    /usr/lib64/python3.5/lib-dynload/resource.cpython-35m-x86_64-linux-gnu.so
                       7f4da2f55000-7f4da2f5d000 r-xp 00000000 00:1a 5279143                    /usr/lib64/python3.5/lib-dynload/math.cpython-35m-x86_64-linux-gnu.so
                       7f4da2f5d000-7f4da315c000 ---p 00008000 00:1a 5279143                    /usr/lib64/python3.5/lib-dynload/math.cpython-35m-x86_64-linux-gnu.so
                       7f4da315c000-7f4da315d000 r--p 00007000 00:1a 5279143                    /usr/lib64/python3.5/lib-dynload/math.cpython-35m-x86_64-linux-gnu.so
                       7f4da315d000-7f4da315f000 rw-p 00008000 00:1a 5279143                    /usr/lib64/python3.5/lib-dynload/math.cpython-35m-x86_64-linux-gnu.so
                       7f4da315f000-7f4da319f000 rw-p 00000000 00:00 0
                       7f4da319f000-7f4da31a4000 r-xp 00000000 00:1a 5279151                    /usr/lib64/python3.5/lib-dynload/select.cpython-35m-x86_64-linux-gnu.so
                       7f4da31a4000-7f4da33a3000 ---p 00005000 00:1a 5279151                    /usr/lib64/python3.5/lib-dynload/select.cpython-35m-x86_64-linux-gnu.so
                       7f4da33a3000-7f4da33a4000 r--p 00004000 00:1a 5279151                    /usr/lib64/python3.5/lib-dynload/select.cpython-35m-x86_64-linux-gnu.so
                       7f4da33a4000-7f4da33a6000 rw-p 00005000 00:1a 5279151                    /usr/lib64/python3.5/lib-dynload/select.cpython-35m-x86_64-linux-gnu.so
                       7f4da33a6000-7f4da33a9000 r-xp 00000000 00:1a 5279130                    /usr/lib64/python3.5/lib-dynload/_posixsubprocess.cpython-35m-x86_64-linux-gnu.so
                       7f4da33a9000-7f4da35a8000 ---p 00003000 00:1a 5279130                    /usr/lib64/python3.5/lib-dynload/_posixsubprocess.cpython-35m-x86_64-linux-gnu.so
                       7f4da35a8000-7f4da35a9000 r--p 00002000 00:1a 5279130                    /usr/lib64/python3.5/lib-dynload/_posixsubprocess.cpython-35m-x86_64-linux-gnu.so
                       7f4da35a9000-7f4da35aa000 rw-p 00003000 00:1a 5279130                    /usr/lib64/python3.5/lib-dynload/_posixsubprocess.cpython-35m-x86_64-linux-gnu.so
                       7f4da35aa000-7f4da362a000 rw-p 00000000 00:00 0
                       7f4da362a000-7f4da362c000 r-xp 00000000 00:1a 5279122                    /usr/lib64/python3.5/lib-dynload/_heapq.cpython-35m-x86_64-linux-gnu.so
                       7f4da362c000-7f4da382b000 ---p 00002000 00:1a 5279122                    /usr/lib64/python3.5/lib-dynload/_heapq.cpython-35m-x86_64-linux-gnu.so
                       7f4da382b000-7f4da382c000 r--p 00001000 00:1a 5279122                    /usr/lib64/python3.5/lib-dynload/_heapq.cpython-35m-x86_64-linux-gnu.so
                       7f4da382c000-7f4da382e000 rw-p 00002000 00:1a 5279122                    /usr/lib64/python3.5/lib-dynload/_heapq.cpython-35m-x86_64-linux-gnu.so
                       7f4da382e000-7f4da39ee000 rw-p 00000000 00:00 0
                       7f4da39ee000-7f4da3bab000 r-xp 00000000 00:1a 4844904                    /usr/lib64/libc-2.24.so
                       7f4da3bab000-7f4da3daa000 ---p 001bd000 00:1a 4844904                    /usr/lib64/libc-2.24.so
                       7f4da3daa000-7f4da3dae000 r--p 001bc000 00:1a 4844904                    /usr/lib64/libc-2.24.so
                       7f4da3dae000-7f4da3db0000 rw-p 001c0000 00:1a 4844904                    /usr/lib64/libc-2.24.so
                       7f4da3db0000-7f4da3db4000 rw-p 00000000 00:00 0
                       7f4da3db4000-7f4da3ebc000 r-xp 00000000 00:1a 4844910                    /usr/lib64/libm-2.24.so
                       7f4da3ebc000-7f4da40bb000 ---p 00108000 00:1a 4844910                    /usr/lib64/libm-2.24.so
                       7f4da40bb000-7f4da40bc000 r--p 00107000 00:1a 4844910                    /usr/lib64/libm-2.24.so
                       7f4da40bc000-7f4da40bd000 rw-p 00108000 00:1a 4844910                    /usr/lib64/libm-2.24.so
                       7f4da40bd000-7f4da40bf000 r-xp 00000000 00:1a 4844928                    /usr/lib64/libutil-2.24.so
                       7f4da40bf000-7f4da42be000 ---p 00002000 00:1a 4844928                    /usr/lib64/libutil-2.24.so
                       7f4da42be000-7f4da42bf000 r--p 00001000 00:1a 4844928                    /usr/lib64/libutil-2.24.so
                       7f4da42bf000-7f4da42c0000 rw-p 00002000 00:1a 4844928                    /usr/lib64/libutil-2.24.so
                       7f4da42c0000-7f4da42c3000 r-xp 00000000 00:1a 4844908                    /usr/lib64/libdl-2.24.so
                       7f4da42c3000-7f4da44c2000 ---p 00003000 00:1a 4844908                    /usr/lib64/libdl-2.24.so
                       7f4da44c2000-7f4da44c3000 r--p 00002000 00:1a 4844908                    /usr/lib64/libdl-2.24.so
                       7f4da44c3000-7f4da44c4000 rw-p 00003000 00:1a 4844908                    /usr/lib64/libdl-2.24.so
                       7f4da44c4000-7f4da44dc000 r-xp 00000000 00:1a 4844920                    /usr/lib64/libpthread-2.24.so
                       7f4da44dc000-7f4da46dc000 ---p 00018000 00:1a 4844920                    /usr/lib64/libpthread-2.24.so
                       7f4da46dc000-7f4da46dd000 r--p 00018000 00:1a 4844920                    /usr/lib64/libpthread-2.24.so
                       7f4da46dd000-7f4da46de000 rw-p 00019000 00:1a 4844920                    /usr/lib64/libpthread-2.24.so
                       7f4da46de000-7f4da46e2000 rw-p 00000000 00:00 0
                       7f4da46e2000-7f4da4917000 r-xp 00000000 00:1a 5277535                    /usr/lib64/libpython3.5m.so.1.0
                       7f4da4917000-7f4da4b17000 ---p 00235000 00:1a 5277535                    /usr/lib64/libpython3.5m.so.1.0
                       7f4da4b17000-7f4da4b1c000 r--p 00235000 00:1a 5277535                    /usr/lib64/libpython3.5m.so.1.0
                       7f4da4b1c000-7f4da4b7f000 rw-p 0023a000 00:1a 5277535                    /usr/lib64/libpython3.5m.so.1.0
                       7f4da4b7f000-7f4da4baf000 rw-p 00000000 00:00 0
                       7f4da4baf000-7f4da4bd4000 r-xp 00000000 00:1a 4844897                    /usr/lib64/ld-2.24.so
                       7f4da4bdf000-7f4da4c10000 rw-p 00000000 00:00 0
                       7f4da4c10000-7f4da4c61000 r--p 00000000 00:1a 5225117                    /usr/lib/locale/pl_PL.utf8/LC_CTYPE
                       7f4da4c61000-7f4da4d91000 r--p 00000000 00:1a 4844827                    /usr/lib/locale/en_US.utf8/LC_COLLATE
                       7f4da4d91000-7f4da4d95000 rw-p 00000000 00:00 0
                       7f4da4dc1000-7f4da4dc2000 r--p 00000000 00:1a 4844832                    /usr/lib/locale/en_US.utf8/LC_NUMERIC
                       7f4da4dc2000-7f4da4dc3000 r--p 00000000 00:1a 4844795                    /usr/lib/locale/en_US.utf8/LC_TIME
                       7f4da4dc3000-7f4da4dc4000 r--p 00000000 00:1a 4844793                    /usr/lib/locale/en_US.utf8/LC_MONETARY
                       7f4da4dc4000-7f4da4dc5000 r--p 00000000 00:1a 4844830                    /usr/lib/locale/en_US.utf8/LC_MESSAGES/SYS_LC_MESSAGES
                       7f4da4dc5000-7f4da4dc6000 r--p 00000000 00:1a 4844847                    /usr/lib/locale/en_US.utf8/LC_PAPER
                       7f4da4dc6000-7f4da4dc7000 r--p 00000000 00:1a 4844831                    /usr/lib/locale/en_US.utf8/LC_NAME
                       7f4da4dc7000-7f4da4dc8000 r--p 00000000 00:1a 4844790                    /usr/lib/locale/en_US.utf8/LC_ADDRESS
                       7f4da4dc8000-7f4da4dc9000 r--p 00000000 00:1a 4844794                    /usr/lib/locale/en_US.utf8/LC_TELEPHONE
                       7f4da4dc9000-7f4da4dca000 r--p 00000000 00:1a 4844792                    /usr/lib/locale/en_US.utf8/LC_MEASUREMENT
                       7f4da4dca000-7f4da4dd1000 r--s 00000000 00:1a 4845203                    /usr/lib64/gconv/gconv-modules.cache
                       7f4da4dd1000-7f4da4dd2000 r--p 00000000 00:1a 4844791                    /usr/lib/locale/en_US.utf8/LC_IDENTIFICATION
                       7f4da4dd2000-7f4da4dd4000 rw-p 00000000 00:00 0
                       7f4da4dd4000-7f4da4dd5000 r--p 00025000 00:1a 4844897                    /usr/lib64/ld-2.24.so
                       7f4da4dd5000-7f4da4dd6000 rw-p 00026000 00:1a 4844897                    /usr/lib64/ld-2.24.so
                       7f4da4dd6000-7f4da4dd7000 rw-p 00000000 00:00 0
                       7ffd24da1000-7ffd24dc2000 rw-p 00000000 00:00 0                          [stack]
                       7ffd24de8000-7ffd24dea000 r--p 00000000 00:00 0                          [vvar]
                       7ffd24dea000-7ffd24dec000 r-xp 00000000 00:00 0                          [vdso]
                       ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0                  [vsyscall]
    COREDUMP_TIMESTAMP=1477877460000000
    MESSAGE=Process 14498 (python3) of user 1002 failed with ZeroDivisionError: division by zero:

            Traceback (most recent call last):
              File "systemd_coredump_exception_handler.py", line 89, in <module>
                g()
              File "systemd_coredump_exception_handler.py", line 88, in g
                f()
              File "systemd_coredump_exception_handler.py", line 86, in f
                div0 = 1 / 0  # pylint: disable=W0612
            ZeroDivisionError: division by zero

            Local variables in innermost frame:
              h=<function f at 0x7f4da3606e18>
              a=3
    _PID=14499
    _SOURCE_REALTIME_TIMESTAMP=1477877460025975
2017-02-14 23:56:48 -05:00
Djalal Harouni
b1d7520ab5 Merge pull request #5343 from eworm-de/virt-kvm
virt: detect qemu/kvm as 'kvm'
2017-02-14 21:45:23 +01:00
Christian Hesse
5f1c788ca9 virt: detect qemu/kvm as 'kvm'
In commit 050e65a we swapped order of detect_vm_{cpuid,dmi}(). That
fixed Virtualbox but broke qemu with kvm, which is expected to return
'kvm'. So check for qemu/kvm first, then DMI, CPUID last.

This fixes #5318.

Signed-off-by: Christian Hesse <mail@eworm.de>
2017-02-14 15:52:53 +01:00
Namhyung Kim
c1143c930f man: coredumpctl: Add description of -r option 2017-02-14 23:27:16 +09:00
Ruslan Bilovol
ae3251851a fstab-generator: add x-systemd.before and x-systemd.after fstab options (#5330)
Currently fstab entries with 'nofail' option are mounted
asynchronously and there is no way how to specify dependencies
between such fstab entry and another units. It means that
users are forced to write additional dependency units manually.

The patch introduces new systemd fstab options:

x-systemd.before=<PATH>
x-systemd.after=<PATH>

 - to specify another mount dependency (PATH is translated to unit name)

x-systemd.before=<UNIT>
x-systemd.after=<UNIT>

 - to specify arbitrary UNIT dependency

For example mount where A should be mounted before local-fs.target unit:

 /dev/sdb1    /mnt/test/A     none    nofail,x-systemd.before=local-fs.target
2017-02-13 20:50:22 +01:00
Zbigniew Jędrzejewski-Szmek
01c901e257 Merge pull request #4832 from rojkov/mdns 2017-02-12 15:38:51 -05:00
Lucas Werkmeister
ec7924fa21 man: busctl: improve capture description (#5321) 2017-02-12 15:20:08 -05:00
Lucas Werkmeister
dbb1d5cf69 man: systemd.journal-fields: document _SYSTEMD_INVOCATION_ID (#5316)
#4067 added documentation to systemd.exec(5), but not systemd.journal-fields(7).
2017-02-12 00:27:58 -05:00
Florian Klink
a0e5c15d4f networkd: add IPv6ProxyNDPAddress support (#5174)
IPv6 Neighbor discovery proxy is the IPv6 equivalent to proxy ARP for IPv4.
It is required when ISPs do not unconditional route IPv6 subnets
to their designated target, but expect neighbor solicitation messages
for every address on a link.

A variable IPv6ProxyNDPAddress= is introduced to the [Network] section,
each representing a IPv6 neighbour proxy entry in the neighbour table.
2017-02-11 00:47:55 +01:00
Lennart Poettering
66a5b902ff man: update pam_systemd and systemd-logind man pages a bit
This builds on @utezduyar's #4640, but extends on it.

Fixes: #4550
Replaces: #4640
2017-02-09 18:44:34 +01:00
Lennart Poettering
0b8fab97cf man: improve documentation on seccomp regarding alternative ABIs
Let's clarify that RestrictAddressFamilies= and MemoryDenyWriteExecute=
are only fully effective if non-native system call architectures are
disabled, since they otherwise may be used to circumvent the filters, as
the filters aren't equally effective on all ABIs.

Fixes: #5277
2017-02-09 18:42:17 +01:00
Zbigniew Jędrzejewski-Szmek
1d450bda70 Merge pull request #5287 from poettering/exit-codes
rework WorkingDirectory= and RootDirectory= management for services
2017-02-09 09:42:43 -05:00
Zbigniew Jędrzejewski-Szmek
bc7e815445 Merge pull request #5255 from poettering/percent-escape
fstab-generator: Options= applies specifier expansion
2017-02-09 09:18:41 -05:00
Lennart Poettering
23deef88b9 Revert "core/execute: set HOME, USER also for root users"
This reverts commit 8b89628a10.

This broke #5246
2017-02-09 11:43:44 +01:00
Martin Pitt
4997dd91fb Merge pull request #5279 from keszybz/man-reverts
A revert and some other tweaks for the man pages
2017-02-09 08:35:28 +01:00
Zbigniew Jędrzejewski-Szmek
fc6149a6ce Merge pull request #4962 from poettering/root-directory-2
Add new MountAPIVFS= boolean unit file setting + RootImage=
2017-02-08 23:05:05 -05:00
Zbigniew Jędrzejewski-Szmek
ef3116b5d4 man: add more commas for clarify and reword a few sentences 2017-02-08 22:53:16 -05:00
Zbigniew Jędrzejewski-Szmek
88e328fd33 man: revert documentation about RequiresMountsFor= honoring noauto
This effectively reverts commit 5d2abc04fc:
Author: Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>
Date:   Wed Apr 16 22:15:42 2014 -0400

    man: document relationship between RequiresMountsFor and noauto

    https://bugzilla.redhat.com/show_bug.cgi?id=1088057

Fixes #5249.
2017-02-08 20:23:12 -05:00
Zbigniew Jędrzejewski-Szmek
3797fd0a22 man: break long lines and update Fedora versions
We should try to keep the unbreakable lines below 80 columns.
It's not always possible of course.

Also, use the dl.fp.o alias instead of a specific mirror.
2017-02-08 20:22:50 -05:00
Evgeny Vereshchagin
52a4aafb4d Merge pull request #5270 from poettering/seccomp-namespace-fix
swap seccomp filter params on s390
2017-02-09 03:31:22 +03:00
David Glasser
2026e39b2d man: fix docs for swap's DefaultDependencies= (#5278)
There was a missing dependency and one with the wrong type. Additionally, refer
to DefaultDependencies= once instead of twice, without a vague reference in the
first one that doesn't mention that the value matters.

Fixes #5226.
2017-02-09 00:12:36 +01:00
Lennart Poettering
ae9d60ce4e seccomp: on s390 the clone() parameters are reversed
Add a bit of code that tries to get the right parameter order in place
for some of the better known architectures, and skips
restrict_namespaces for other archs.

This also bypasses the test on archs where we don't know the right
order.

In this case I didn't bother with testing the case where no filter is
applied, since that is hopefully just an issue for now, as there's
nothing stopping us from supporting more archs, we just need to know
which order is right.

Fixes: #5241
2017-02-08 22:21:27 +01:00
Lennart Poettering
19d0833bea fstab-generator: also convert % → %% for What=
Same reasons as the previous patch.
2017-02-08 17:20:35 +01:00
Lennart Poettering
d5cc4be28f fstab-generator: Options= applies specifier expansion
Let's document that this is the case, and properly escape % when we
generate Options= in the generator.

Fixes: #5086
2017-02-08 17:20:35 +01:00
Philip Withnall
b53ede699c nspawn: Add support for sysroot pivoting (#5258)
Add a new --pivot-root argument to systemd-nspawn, which specifies a
directory to pivot to / inside the container; while the original / is
pivoted to another specified directory (if provided). This adds
support for booting container images which may contain several bootable
sysroots, as is common with OSTree disk images. When these disk images
are booted on real hardware, ostree-prepare-root is run in conjunction
with sysroot.mount in the initramfs to achieve the same results.
2017-02-08 16:54:31 +01:00
Lennart Poettering
8a50cf6957 seccomp: MemoryDenyWriteExecute= should affect both mmap() and mmap2() (#5254)
On i386 we block the old mmap() call entirely, since we cannot properly
filter it. Thankfully it hasn't been used by glibc since quite some
time.

Fixes: #5240
2017-02-08 15:14:02 +01:00
Lennart Poettering
cec2a20dab man: s/--unmount/--umount/g (#5243)
The --help text currently uses the "--umount" spelling, hence to the
same in the man page too.

And let's settle on "umount" instead of "unmount" here, since most folks
probably expect that when typing in a command, as util-linux' tool is
called "umount" after all, and so is the symlink "systemd-umount" we
install.
2017-02-07 19:54:37 -05:00
Lucas Werkmeister
8331eaabc7 man: document *.d/ drop-in file order (#5262) 2017-02-07 18:58:02 -05:00
Lucas Werkmeister
c04becfa72 man: document that systemd-run --on-* cannot be used with --pty 2017-02-07 16:26:02 +01:00
Lucas Werkmeister
ee3c52ebbe man: use systemctl enable --now 2017-02-07 16:20:25 +01:00
Lucas Werkmeister
aa9f9e587d man: add cross-reference
The third paragraph of the Description already linked to
systemd.resource-control(5), but it was missing from the list of
additional options for the [Service] section.
2017-02-07 16:20:25 +01:00
Lennart Poettering
41488e1f7a dissect: try to read roothash value off user.verity.roothash xattr of image file
This slightly extends the roothash loading logic to first check for a
user.verity.roothash extended attribute on the image file. If it exists,
it is used as Verity root hash and the ".roothash" file is not used.

This should improve the chance that the roothash is retained when the
file is moved around, as the data snippet is attached directly to the
image file. The field is still detached from the file payload however,
in order to make sure it may be trusted independently.

This does not replace the ".roothash" file loading, it simply adds a
second way to retrieve the data.

Extended attributes are often a poor choice for storing metadata like
this as it is usually difficult to discover for admins and users, and
hard to fix if it ever gets out of sync.  However, in this case I think
it's safe as verity implies read-only access, and thus there's little
chance of it to get out of sync.
2017-02-07 12:21:29 +01:00
Lennart Poettering
915e6d1676 core: add RootImage= setting for using a specific image file as root directory for a service
This is similar to RootDirectory= but mounts the root file system from a
block device or loopback file instead of another directory.

This reuses the image dissector code now used by nspawn and
gpt-auto-discovery.
2017-02-07 12:19:42 +01:00
Lennart Poettering
5d997827e2 core: add a per-unit setting MountAPIVFS= for mounting /dev, /proc, /sys in conjunction with RootDirectory=
This adds a boolean unit file setting MountAPIVFS=. If set, the three
main API VFS mounts will be mounted for the service. This only has an
effect on RootDirectory=, which it makes a ton times more useful.

(This is basically the /dev + /proc + /sys mounting code posted in the
original #4727, but rebased on current git, and with the automatic logic
replaced by explicit logic controlled by a unit file setting)
2017-02-07 11:22:05 +01:00
Evgeny Vereshchagin
d52fbaa58c Merge pull request #5225 from poettering/seccomp-socket
make RestrictAddressFamilies= officially a NOP on i386
2017-02-07 05:06:54 +03:00
Lennart Poettering
aa20394579 notify: document that we fake the PID when sending sd_notify() 2017-02-06 20:01:24 +01:00
Lennart Poettering
b3bb64767a man: document that sd_notify() is racy in some cases 2017-02-06 18:21:27 +01:00
Lennart Poettering
142bd808a1 man: Document that RestrictAddressFamilies= doesn't work on s390/s390x/...
We already say that it doesn't work on i386, but there are more archs
like that apparently.
2017-02-06 14:17:12 +01:00
Martin Pitt
d2697a95fe Merge pull request #5223 from keszybz/root-workdir
Fix WorkDir=~ with empty User=
2017-02-05 22:31:02 +01:00
Zbigniew Jędrzejewski-Szmek
d20a328f97 build-sys,man: describe systemd-umount and hook it up to installation (#5227) 2017-02-05 22:27:38 +01:00
Martin Pitt
63927b9f4c man: clarify interface for suspend/resume integration (#5220)
Fixes #4916.
2017-02-03 12:11:37 -05:00
Zbigniew Jędrzejewski-Szmek
8b89628a10 core/execute: set HOME, USER also for root users
This changes the environment for services running as root from:

LANG=C.utf8
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin
INVOCATION_ID=ffbdec203c69499a9b83199333e31555
JOURNAL_STREAM=8:1614518

to

LANG=C.utf8
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin
HOME=/root
LOGNAME=root
USER=root
SHELL=/bin/sh
INVOCATION_ID=15a077963d7b4ca0b82c91dc6519f87c
JOURNAL_STREAM=8:1616718

Making the environment special for the root user complicates things
unnecessarily. This change simplifies both our logic (by making the setting
of the variables unconditional), and should also simplify the logic in
services (particularly scripts).

Fixes #5124.
2017-02-03 11:49:22 -05:00
Lennart Poettering
b415174d8e Merge pull request #5202 from keszybz/cgls-units
systemd-cgls --unit --user-unit
2017-02-02 11:45:51 +01:00
Zbigniew Jędrzejewski-Szmek
e7aa3f5014 cgls: add --user-unit to show user units 2017-02-01 22:31:41 -05:00
Zbigniew Jędrzejewski-Szmek
d9855d87eb cgls: add --unit to show units
$ systemd-cgls -u systemd-journald.service machine.slice

I opted for a "global" switch, instead of modifying the behaviour of just one
argument. It seem to be a more useful setting, since usually one will want to
query one or more units, and not mix unit names with paths.

Closes #5156.
2017-02-01 22:30:03 -05:00
Brandon Philips
9806301614 man: fix spelling error parth -> path 2017-02-02 00:54:42 +01:00
Zbigniew Jędrzejewski-Szmek
bef19548a2 systemctl: restore --failed (#5198)
'systemctl --failed' is an extremely common operation and it's nice to have
a shortcut for it.

Revert "man: don't document systemctl --failed" and add the option back to
systemctl's help and shell completion scripts.

This reverts commit 036359ba8d.
2017-02-02 00:23:46 +01:00
Zbigniew Jędrzejewski-Szmek
c954f33233 man: mention ConditionFirstBoot= in systemd-firstboot(1) (#5186) 2017-01-31 08:25:19 +01:00
Rike-Benjamin Schuppner
b03ec00960 man: fix flag in systemd-run (#5107) 2017-01-20 03:10:30 +03:00