Commit 54a85ddf authored by Bhushan Shah's avatar Bhushan Shah 📱
Browse files

cmake: set the CAP_WAKE_ALARM capability on the powerdevil

timerfd_create with CLOCK_REALTIME_ALARM which can wake system from
suspend/deep sleep needs executable to have a CAP_WAKE_ALARM. However
dependency is not marked as the required since if setting
CLOCK_REALTIME_ALARM fails, we fallback to CLOCK_REALTIME which can
allow setting alarms but not which can wake system from suspend.

See also: man 2 timerfd_create
parent bf144124
......@@ -52,6 +52,13 @@ find_package(UDev REQUIRED)
find_package(XCB REQUIRED COMPONENTS XCB RANDR DPMS)
find_package(Libcap)
set_package_properties(Libcap PROPERTIES
TYPE OPTIONAL
PURPOSE "Needed for scheduled wakeup which can wake from suspend (CAP_WAKE_ALARM)"
)
set(HAVE_LIBCAP ${Libcap_FOUND})
option(HAVE_DDCUTIL "DDCUtil library support" OFF)
if(HAVE_DDCUTIL)
find_package(DDCUtil REQUIRED)
......
# Try to find the setcap binary and cap libraries
#
# This will define:
#
# Libcap_FOUND - system has the cap library and setcap binary
# Libcap_LIBRARIES - cap libraries to link against
# SETCAP_EXECUTABLE - path of the setcap binary
# In addition, the following targets are defined:
#
# Libcap::SetCapabilities
#
# Copyright (c) 2014, Hrvoje Senjan, <hrvoje.senjan@gmail.com>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# 3. The name of the author may not be used to endorse or promote products
# derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
find_program(SETCAP_EXECUTABLE NAMES setcap DOC "The setcap executable")
find_library(Libcap_LIBRARIES NAMES cap DOC "The cap (capabilities) library")
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(Libcap FOUND_VAR Libcap_FOUND
REQUIRED_VARS SETCAP_EXECUTABLE Libcap_LIBRARIES)
if(Libcap_FOUND AND NOT TARGET Libcap::SetCapabilities)
add_executable(Libcap::SetCapabilities IMPORTED)
set_target_properties(Libcap::SetCapabilities PROPERTIES
IMPORTED_LOCATION "${SETCAP_EXECUTABLE}"
)
endif()
mark_as_advanced(SETCAP_EXECUTABLE Libcap_LIBRARIES)
include(FeatureSummary)
set_package_properties(Libcap PROPERTIES
URL https://sites.google.com/site/fullycapable/
DESCRIPTION "Capabilities are a measure to limit the omnipotence of the superuser.")
......@@ -144,6 +144,16 @@ endif ()
target_link_libraries(powerdevil ${UDEV_LIBS})
install(TARGETS powerdevil DESTINATION ${KDE_INSTALL_FULL_LIBEXECDIR})
if (HAVE_LIBCAP)
install(
CODE "execute_process(
COMMAND
${SETCAP_EXECUTABLE}
CAP_WAKE_ALARM=+ep
${KDE_INSTALL_FULL_LIBEXECDIR}/org_kde_powerdevil)"
)
endif()
install(FILES ${CMAKE_CURRENT_BINARY_DIR}/powerdevil.desktop
DESTINATION ${KDE_INSTALL_AUTOSTARTDIR})
install(TARGETS powerdevilcore ${KDE_INSTALL_TARGETS_DEFAULT_ARGS})
......
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