logind: introduce libsystemd-login.so as fast path to access logind data
This commit is contained in:
parent
0a55b298d9
commit
74b91131ed
2
.gitignore
vendored
2
.gitignore
vendored
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@ -1,3 +1,5 @@
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libsystemd-login.pc
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test-login
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systemd-loginctl
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systemd-loginctl
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systemd-localed
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systemd-localed
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systemd-timedated
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systemd-timedated
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47
Makefile.am
47
Makefile.am
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@ -19,6 +19,10 @@ ACLOCAL_AMFLAGS = -I m4
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SUBDIRS = po
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SUBDIRS = po
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LIBSYSTEMD_LOGIN_CURRENT=0
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LIBSYSTEMD_LOGIN_REVISION=0
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LIBSYSTEMD_LOGIN_AGE=0
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# Dirs of external packages
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# Dirs of external packages
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dbuspolicydir=@dbuspolicydir@
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dbuspolicydir=@dbuspolicydir@
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dbussessionservicedir=@dbussessionservicedir@
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dbussessionservicedir=@dbussessionservicedir@
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@ -35,6 +39,7 @@ pkgsysconfdir=$(sysconfdir)/systemd
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userunitdir=$(prefix)/lib/systemd/user
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userunitdir=$(prefix)/lib/systemd/user
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tmpfilesdir=$(prefix)/lib/tmpfiles.d
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tmpfilesdir=$(prefix)/lib/tmpfiles.d
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usergeneratordir=$(pkglibexecdir)/user-generators
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usergeneratordir=$(pkglibexecdir)/user-generators
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pkgincludedir=$(includedir)/systemd
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# And these are the special ones for /
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# And these are the special ones for /
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rootdir=@rootdir@
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rootdir=@rootdir@
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@ -183,6 +188,12 @@ systemgenerator_PROGRAMS += \
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systemd-cryptsetup-generator
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systemd-cryptsetup-generator
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endif
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endif
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lib_LTLIBRARIES = \
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libsystemd-login.la
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pkginclude_HEADERS = \
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src/sd-login.h
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noinst_PROGRAMS = \
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noinst_PROGRAMS = \
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test-engine \
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test-engine \
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test-job-type \
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test-job-type \
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@ -192,7 +203,8 @@ noinst_PROGRAMS = \
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test-daemon \
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test-daemon \
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test-cgroup \
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test-cgroup \
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test-env-replace \
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test-env-replace \
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test-strv
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test-strv \
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test-login
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if HAVE_PAM
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if HAVE_PAM
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pamlib_LTLIBRARIES = \
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pamlib_LTLIBRARIES = \
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@ -410,6 +422,7 @@ EXTRA_DIST = \
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units/quotacheck.service.in \
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units/quotacheck.service.in \
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units/user@.service.in \
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units/user@.service.in \
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systemd.pc.in \
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systemd.pc.in \
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libsystemd-login.pc.in \
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introspect.awk \
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introspect.awk \
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src/73-seat-late.rules.in
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src/73-seat-late.rules.in
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@ -472,7 +485,8 @@ dist_doc_DATA = \
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src/sd-readahead.c
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src/sd-readahead.c
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pkgconfigdata_DATA = \
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pkgconfigdata_DATA = \
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systemd.pc
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systemd.pc \
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libsystemd-login.pc
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# Passed through intltool only
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# Passed through intltool only
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polkitpolicy_in_files = \
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polkitpolicy_in_files = \
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@ -801,6 +815,16 @@ test_strv_CFLAGS = \
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test_strv_LDADD = \
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test_strv_LDADD = \
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libsystemd-basic.la
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libsystemd-basic.la
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test_login_SOURCES = \
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src/test-login.c
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test_login_CFLAGS = \
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$(AM_CFLAGS)
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test_login_LDADD = \
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libsystemd-basic.la \
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libsystemd-login.la
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systemd_logger_SOURCES = \
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systemd_logger_SOURCES = \
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src/logger.c \
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src/logger.c \
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src/tcpwrap.c
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src/tcpwrap.c
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@ -946,6 +970,7 @@ systemd_uaccess_CFLAGS = \
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systemd_uaccess_LDADD = \
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systemd_uaccess_LDADD = \
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libsystemd-basic.la \
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libsystemd-basic.la \
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libsystemd-daemon.la \
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$(UDEV_LIBS) \
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$(UDEV_LIBS) \
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$(ACL_LIBS)
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$(ACL_LIBS)
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@ -1339,6 +1364,21 @@ pam_systemd_la_LIBADD = \
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$(PAM_LIBS) \
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$(PAM_LIBS) \
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$(DBUS_LIBS)
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$(DBUS_LIBS)
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libsystemd_login_la_CFLAGS = \
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$(AM_CFLAGS) \
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-fvisibility=hidden
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libsystemd_login_la_LDFLAGS = \
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-shared \
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-version-info $(LIBSYSTEMD_LOGIN_CURRENT):$(LIBSYSTEMD_LOGIN_REVISION):$(LIBSYSTEMD_LOGIN_AGE)
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libsystemd_login_la_SOURCES = \
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src/sd-login.c \
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src/cgroup-util.c
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libsystemd_login_la_LIBADD = \
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libsystemd-basic.la
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SED_PROCESS = \
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SED_PROCESS = \
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$(AM_V_GEN)$(MKDIR_P) $(dir $@) && \
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$(AM_V_GEN)$(MKDIR_P) $(dir $@) && \
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$(SED) -e 's,@rootlibexecdir\@,$(rootlibexecdir),g' \
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$(SED) -e 's,@rootlibexecdir\@,$(rootlibexecdir),g' \
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@ -1355,6 +1395,9 @@ SED_PROCESS = \
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-e 's,@PACKAGE_NAME\@,$(PACKAGE_NAME),g' \
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-e 's,@PACKAGE_NAME\@,$(PACKAGE_NAME),g' \
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-e 's,@PACKAGE_URL\@,$(PACKAGE_URL),g' \
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-e 's,@PACKAGE_URL\@,$(PACKAGE_URL),g' \
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-e 's,@prefix\@,$(prefix),g' \
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-e 's,@prefix\@,$(prefix),g' \
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-e 's,@exec_prefix\@,$(exec_prefix),g' \
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-e 's,@libdir\@,$(libdir),g' \
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-e 's,@includedir\@,$(includedir),g' \
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< $< > $@ || rm $@
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< $< > $@ || rm $@
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units/%: units/%.in Makefile
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units/%: units/%.in Makefile
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2
TODO
2
TODO
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@ -20,6 +20,8 @@ F15 External:
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Features:
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Features:
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* logind: ensure ACLs are updated on login and logout
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* warn if the user stops a service but not its associated socket
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* warn if the user stops a service but not its associated socket
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* ensure we always set the facility when logging to kmsg
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* ensure we always set the facility when logging to kmsg
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18
libsystemd-login.pc.in
Normal file
18
libsystemd-login.pc.in
Normal file
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@ -0,0 +1,18 @@
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# This file is part of systemd.
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#
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# systemd is free software; you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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prefix=@prefix@
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exec_prefix=@exec_prefix@
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libdir=@libdir@
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includedir=@includedir@
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Name: systemd
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Description: systemd Login Utility Library
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URL: @PACKAGE_URL@
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Version: @PACKAGE_VERSION@
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Libs: -L${libdir} -lsystemd-login
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Cflags: -I${includedir}
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323
src/sd-login.c
Normal file
323
src/sd-login.c
Normal file
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@ -0,0 +1,323 @@
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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/***
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This file is part of systemd.
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Copyright 2011 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <unistd.h>
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#include <string.h>
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#include <errno.h>
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#include "util.h"
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#include "cgroup-util.h"
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#include "macro.h"
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#include "sd-login.h"
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_public_ int sd_pid_get_session(pid_t pid, char **session) {
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int r;
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char *cg_process, *cg_init, *p;
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if (pid == 0)
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pid = getpid();
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if (pid <= 0)
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return -EINVAL;
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if (!session)
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return -EINVAL;
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r = cg_get_by_pid(SYSTEMD_CGROUP_CONTROLLER, pid, &cg_process);
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if (r < 0)
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return r;
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r = cg_get_by_pid(SYSTEMD_CGROUP_CONTROLLER, 1, &cg_init);
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if (r < 0) {
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free(cg_process);
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return r;
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}
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if (endswith(cg_init, "/system"))
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cg_init[strlen(cg_init)-7] = 0;
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else if (streq(cg_init, "/"))
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cg_init[0] = 0;
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if (startswith(cg_process, cg_init))
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p = cg_process + strlen(cg_init);
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else
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p = cg_process;
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free(cg_init);
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if (!startswith(p, "/user/")) {
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free(cg_process);
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return -ENOENT;
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}
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p += 6;
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if (startswith(p, "shared/") || streq(p, "shared")) {
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free(cg_process);
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return -ENOENT;
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}
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p = strchr(p, '/');
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if (!p) {
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free(cg_process);
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return -ENOENT;
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}
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p++;
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p = strndup(p, strcspn(p, "/"));
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free(cg_process);
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if (!p)
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return -ENOMEM;
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*session = p;
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return 0;
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}
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_public_ int sd_uid_get_state(uid_t uid, char**state) {
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char *p, *s = NULL;
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int r;
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if (!state)
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return -EINVAL;
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if (asprintf(&p, "/run/systemd/users/%lu", (unsigned long) uid) < 0)
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return -ENOMEM;
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r = parse_env_file(p, NEWLINE, "STATE", &s, NULL);
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free(p);
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if (r == -ENOENT) {
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free(s);
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s = strdup("offline");
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if (!s)
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return -ENOMEM;
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*state = s;
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return 0;
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} else if (r < 0) {
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free(s);
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return r;
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} else if (!s)
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return -EIO;
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*state = s;
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return 0;
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}
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static int uid_is_on_seat_internal(uid_t uid, const char *seat, const char *variable) {
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char *p, *w, *t, *state, *s = NULL;
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size_t l;
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int r;
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if (!seat)
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return -EINVAL;
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p = strappend("/run/systemd/seats/", seat);
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if (!p)
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return -ENOMEM;
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r = parse_env_file(p, NEWLINE, "UIDS", &s, NULL);
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free(p);
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if (r < 0) {
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free(s);
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return r;
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}
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if (!s)
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return -EIO;
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if (asprintf(&t, "%lu", (unsigned long) uid) < 0) {
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free(s);
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return -ENOMEM;
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}
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FOREACH_WORD(w, l, s, state) {
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if (strncmp(t, w, l) == 0) {
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free(s);
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free(t);
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return 1;
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}
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}
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free(s);
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free(t);
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return 0;
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}
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_public_ int sd_uid_is_on_seat(uid_t uid, const char *seat) {
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return uid_is_on_seat_internal(uid, seat, "UIDS");
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}
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_public_ int sd_uid_is_active_on_seat(uid_t uid, const char *seat) {
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return uid_is_on_seat_internal(uid, seat, "ACTIVE_UID");
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}
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_public_ int sd_session_is_active(const char *session) {
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int r;
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char *p, *s = NULL;
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if (!session)
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return -EINVAL;
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p = strappend("/run/systemd/sessions/", session);
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if (!p)
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return -ENOMEM;
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r = parse_env_file(p, NEWLINE, "ACTIVE", &s, NULL);
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free(p);
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if (r < 0) {
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free(s);
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return r;
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}
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|
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if (!s)
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return -EIO;
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||||||
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r = parse_boolean(s);
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free(s);
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return r;
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}
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_public_ int sd_session_get_uid(const char *session, uid_t *uid) {
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int r;
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char *p, *s = NULL;
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unsigned long ul;
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if (!session)
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return -EINVAL;
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if (!uid)
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return -EINVAL;
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|
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p = strappend("/run/systemd/sessions/", session);
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if (!p)
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return -ENOMEM;
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|
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r = parse_env_file(p, NEWLINE, "UID", &s, NULL);
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free(p);
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|
|
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|
if (r < 0) {
|
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free(s);
|
||||||
|
return r;
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|
}
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|
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if (!s)
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||||||
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return -EIO;
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|
|
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r = safe_atolu(s, &ul);
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free(s);
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|
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if (r < 0)
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||||||
|
return r;
|
||||||
|
|
||||||
|
*uid = (uid_t) ul;
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
_public_ int sd_session_get_seat(const char *session, char **seat) {
|
||||||
|
char *p, *s = NULL;
|
||||||
|
int r;
|
||||||
|
|
||||||
|
if (!session)
|
||||||
|
return -EINVAL;
|
||||||
|
if (!seat)
|
||||||
|
return -EINVAL;
|
||||||
|
|
||||||
|
p = strappend("/run/systemd/sessions/", session);
|
||||||
|
if (!p)
|
||||||
|
return -ENOMEM;
|
||||||
|
|
||||||
|
r = parse_env_file(p, NEWLINE, "SEAT", &s, NULL);
|
||||||
|
free(p);
|
||||||
|
|
||||||
|
if (r < 0) {
|
||||||
|
free(s);
|
||||||
|
return r;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (isempty(s))
|
||||||
|
return -ENOENT;
|
||||||
|
|
||||||
|
*seat = s;
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
_public_ int sd_seat_get_active(const char *seat, char **session, uid_t *uid) {
|
||||||
|
char *p, *s = NULL, *t = NULL;
|
||||||
|
int r;
|
||||||
|
|
||||||
|
if (!seat)
|
||||||
|
return -EINVAL;
|
||||||
|
if (!session && !uid)
|
||||||
|
return -EINVAL;
|
||||||
|
|
||||||
|
p = strappend("/run/systemd/seats/", seat);
|
||||||
|
if (!p)
|
||||||
|
return -ENOMEM;
|
||||||
|
|
||||||
|
r = parse_env_file(p, NEWLINE,
|
||||||
|
"ACTIVE", &s,
|
||||||
|
"ACTIVE_UID", &t,
|
||||||
|
NULL);
|
||||||
|
free(p);
|
||||||
|
|
||||||
|
if (r < 0) {
|
||||||
|
free(s);
|
||||||
|
free(t);
|
||||||
|
return r;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (session && !s) {
|
||||||
|
free(t);
|
||||||
|
return -EIO;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (uid && !t) {
|
||||||
|
free(s);
|
||||||
|
return -EIO;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (uid && t) {
|
||||||
|
unsigned long ul;
|
||||||
|
|
||||||
|
r = safe_atolu(t, &ul);
|
||||||
|
if (r < 0) {
|
||||||
|
free(t);
|
||||||
|
free(s);
|
||||||
|
return r;
|
||||||
|
}
|
||||||
|
|
||||||
|
*uid = (uid_t) ul;
|
||||||
|
}
|
||||||
|
|
||||||
|
free(t);
|
||||||
|
|
||||||
|
if (session && s)
|
||||||
|
*session = s;
|
||||||
|
else
|
||||||
|
free(s);
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
51
src/sd-login.h
Normal file
51
src/sd-login.h
Normal file
|
@ -0,0 +1,51 @@
|
||||||
|
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
|
||||||
|
|
||||||
|
#ifndef foosdloginhfoo
|
||||||
|
#define foosdloginhfoo
|
||||||
|
|
||||||
|
/***
|
||||||
|
This file is part of systemd.
|
||||||
|
|
||||||
|
Copyright 2011 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
|
||||||
|
(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.
|
||||||
|
|
||||||
|
You should have received a copy of the GNU General Public License
|
||||||
|
along with systemd; If not, see <http://www.gnu.org/licenses/>.
|
||||||
|
***/
|
||||||
|
|
||||||
|
#include <sys/types.h>
|
||||||
|
|
||||||
|
/* Get session from PID */
|
||||||
|
int sd_pid_get_session(pid_t pid, char **session);
|
||||||
|
|
||||||
|
/* Get state from uid. Possible states: offline, lingering, online, active */
|
||||||
|
int sd_uid_get_state(uid_t uid, char**state);
|
||||||
|
|
||||||
|
/* Return 1 if uid has session on seat */
|
||||||
|
int sd_uid_is_on_seat(uid_t uid, const char *seat);
|
||||||
|
|
||||||
|
/* Return 1 if uid has active session on seat */
|
||||||
|
int sd_uid_is_active_on_seat(uid_t uid, const char *seat);
|
||||||
|
|
||||||
|
/* Return 1 if the session is a active */
|
||||||
|
int sd_session_is_active(const char *session);
|
||||||
|
|
||||||
|
/* Determine user id of session */
|
||||||
|
int sd_session_get_uid(const char *session, uid_t *uid);
|
||||||
|
|
||||||
|
/* Determine seat of session */
|
||||||
|
int sd_session_get_seat(const char *session, char **seat);
|
||||||
|
|
||||||
|
/* Return active session and user of seat */
|
||||||
|
int sd_seat_get_active(const char *seat, char **session, uid_t *uid);
|
||||||
|
|
||||||
|
#endif
|
65
src/test-login.c
Normal file
65
src/test-login.c
Normal file
|
@ -0,0 +1,65 @@
|
||||||
|
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
|
||||||
|
|
||||||
|
/***
|
||||||
|
This file is part of systemd.
|
||||||
|
|
||||||
|
Copyright 2011 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
|
||||||
|
(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.
|
||||||
|
|
||||||
|
You should have received a copy of the GNU General Public License
|
||||||
|
along with systemd; If not, see <http://www.gnu.org/licenses/>.
|
||||||
|
***/
|
||||||
|
|
||||||
|
#include "sd-login.h"
|
||||||
|
#include "util.h"
|
||||||
|
|
||||||
|
int main(int argc, char* argv[]) {
|
||||||
|
int r, k;
|
||||||
|
uid_t u, u2;
|
||||||
|
char *seat;
|
||||||
|
char *session;
|
||||||
|
char *state;
|
||||||
|
char *session2;
|
||||||
|
|
||||||
|
assert_se(sd_pid_get_session(0, &session) == 0);
|
||||||
|
printf("session = %s\n", session);
|
||||||
|
|
||||||
|
r = sd_session_is_active(session);
|
||||||
|
assert_se(r >= 0);
|
||||||
|
printf("active = %s\n", yes_no(r));
|
||||||
|
|
||||||
|
assert_se(sd_session_get_uid(session, &u) >= 0);
|
||||||
|
printf("uid = %lu\n", (unsigned long) u);
|
||||||
|
|
||||||
|
assert_se(sd_session_get_seat(session, &seat) >= 0);
|
||||||
|
printf("seat = %s\n", seat);
|
||||||
|
|
||||||
|
assert_se(sd_uid_get_state(u, &state) >= 0);
|
||||||
|
printf("state = %s\n", state);
|
||||||
|
|
||||||
|
assert_se(sd_uid_is_on_seat(u, seat) > 0);
|
||||||
|
|
||||||
|
k = sd_uid_is_active_on_seat(u, seat);
|
||||||
|
assert_se(k >= 0);
|
||||||
|
assert_se(!!r == !!r);
|
||||||
|
|
||||||
|
assert_se(sd_seat_get_active(seat, &session2, &u2) >= 0);
|
||||||
|
printf("session2 = %s\n", session2);
|
||||||
|
printf("uid2 = %lu\n", (unsigned long) u2);
|
||||||
|
|
||||||
|
free(session);
|
||||||
|
free(state);
|
||||||
|
free(session2);
|
||||||
|
free(seat);
|
||||||
|
|
||||||
|
return 0;
|
||||||
|
}
|
|
@ -6,7 +6,7 @@
|
||||||
# (at your option) any later version.
|
# (at your option) any later version.
|
||||||
|
|
||||||
prefix=@prefix@
|
prefix=@prefix@
|
||||||
exec_prefix=${prefix}
|
exec_prefix=@exec_prefix@
|
||||||
systemdsystemunitdir=@systemunitdir@
|
systemdsystemunitdir=@systemunitdir@
|
||||||
systemduserunitdir=@userunitdir@
|
systemduserunitdir=@userunitdir@
|
||||||
systemdsystemconfdir=@pkgsysconfdir@/system
|
systemdsystemconfdir=@pkgsysconfdir@/system
|
||||||
|
|
Loading…
Reference in a new issue