X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=man%2Fsd_booted.xml;h=28c153a3245f6f2b5be10c781de4e84495184bc0;hp=141625d9ad051b8060393bc4436fccabc2433d10;hb=edf2573743b25273bee020230a60f1a054b8ec60;hpb=a26c9cc60477acacf3a147009894bd837353ed6c diff --git a/man/sd_booted.xml b/man/sd_booted.xml index 141625d9a..28c153a32 100644 --- a/man/sd_booted.xml +++ b/man/sd_booted.xml @@ -8,20 +8,21 @@ Copyright 2010 Lennart Poettering systemd is free software; you can redistribute it and/or modify it - under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or + under the terms of the GNU Lesser General Public License as published by + the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. systemd is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. + Lesser General Public License for more details. - You should have received a copy of the GNU General Public License + You should have received a copy of the GNU Lesser General Public License along with systemd; If not, see . --> - + sd_booted @@ -44,7 +45,7 @@ sd_booted - Test whether the system is running the systemd init system. + Test whether the system is running the systemd init system @@ -76,52 +77,20 @@ Notes - This function is provided by the reference - implementation of APIs for new-style daemons and - distributed with the systemd package. The algorithm it - implements is simple, and can easily be reimplemented - in daemons if it is important to support this - interface without using the reference - implementation. + Internally, this function checks whether the - /sys/fs/cgroup/systemd virtual file - system is mounted, by comparing the st_dev value of - the stat() data of - /sys/fs/cgroup and - /sys/fs/cgroup/systemd. - - For details about the algorithm check the - liberally licensed reference implementation sources: - - resp. - - sd_booted() is implemented - in the reference implementation's - sd-daemon.c and - sd-daemon.h files. These - interfaces are available as shared library, which can - be compiled and linked to with the - libsystemd-daemon - pkg-config1 - file. Alternatively, applications consuming these APIs - may copy the implementation into their source - tree. For more details about the reference - implementation see - sd_daemon7. - - If the reference implementation is used as - drop-in files and -DDISABLE_SYSTEMD is set during - compilation this function will always return 0 and - otherwise become a NOP. + directory /run/systemd/system/ + exists. A simple check like this can also be + implemented trivially in shell or any other + language. See Also systemd1, - sd_daemon7 + sd-daemon3