Adding basic options to the configure script to use libseccomp or not. The default is set to 'no'. If the flag --enable-libseccomp is used, the script will check for its existence using pkg-config.
v2: * As I removed all the code related to seccomp from vl.c, I created qemu-seccomp.[ch]. * Also making the configure script to add the specific line to Makefile.obj in order to compile with appropriate support to seccomp. v3: * Removing the line from Makefile.obj and adding it to Makefile.objs. * Marking libseccomp default option to 'yes' in the configure script. v4: * Now two new options added: --enable-seccomp-debug --disable-seccomp-debug Enabling debug will cause libseccomp to be configured with SCMP_ACT_TRAP. This will help users/developers to catch system calls that were not previously whitelisted. Signed-off-by: Eduardo Otubo <ot...@linux.vnet.ibm.com> --- Makefile.objs | 10 ++++++++++ configure | 34 ++++++++++++++++++++++++++++++++++ 2 files changed, 44 insertions(+) diff --git a/Makefile.objs b/Makefile.objs index 5ebbcfa..eb4efa3 100644 --- a/Makefile.objs +++ b/Makefile.objs @@ -96,6 +96,16 @@ common-obj-y += qemu-timer.o qemu-timer-common.o common-obj-$(CONFIG_SLIRP) += slirp/ ###################################################################### +# libseccomp +ifeq ($(CONFIG_SECCOMP),y) +common-obj-y += qemu-seccomp.o +endif + +ifeq ($(CONFIG_SECCOMP_DEBUG),y) +common-obj-y += qemu-seccomp-debug.o +endif + +###################################################################### # libuser user-obj-y = diff --git a/configure b/configure index 0a3896e..39ef457 100755 --- a/configure +++ b/configure @@ -195,6 +195,8 @@ zlib="yes" guest_agent="yes" libiscsi="" coroutine="" +seccomp="yes" +seccomp_debug="no" # parse CC options first for opt do @@ -824,6 +826,14 @@ for opt do ;; --disable-guest-agent) guest_agent="no" ;; + --enable-seccomp-debug) seccomp_debug="yes" + ;; + --disable-seccomp-debug) seccomp_debug="no" + ;; + --enable-seccomp) seccomp="yes" + ;; + --disable-seccomp) seccomp="no" + ;; *) echo "ERROR: unknown option $opt"; show_help="yes" ;; esac @@ -1108,6 +1118,10 @@ echo " --disable-usb-redir disable usb network redirection support" echo " --enable-usb-redir enable usb network redirection support" echo " --disable-guest-agent disable building of the QEMU Guest Agent" echo " --enable-guest-agent enable building of the QEMU Guest Agent" +echo " --disable-seccomp-debug disable seccomp debug support" +echo " --enable-seccomp-debug enables seccomp debug support" +echo " --disable-seccomp disable seccomp support" +echo " --enable-seccomp enables seccomp support" echo " --with-coroutine=BACKEND coroutine backend. Supported options:" echo " gthread, ucontext, sigaltstack, windows" echo "" @@ -1369,6 +1383,16 @@ EOF fi ########################################## +# libseccomp check + +if test "$seccomp" = "yes" ; then + if $pkg_config libseccomp --modversion >/dev/null 2>&1; then + LIBS=`$pkg_config --libs libseccomp` + else + feature_not_found "libseccomp" + fi +fi +########################################## # xen probe if test "$xen" != "no" ; then @@ -3053,6 +3077,8 @@ echo "usb net redir $usb_redir" echo "OpenGL support $opengl" echo "libiscsi support $libiscsi" echo "build guest agent $guest_agent" +echo "seccomp support $seccomp" +echo "seccomp debug $seccomp_debug" echo "coroutine backend $coroutine_backend" if test "$sdl_too_old" = "yes"; then @@ -3351,6 +3377,14 @@ if test "$libiscsi" = "yes" ; then echo "CONFIG_LIBISCSI=y" >> $config_host_mak fi +if test "$seccomp" = "yes"; then + echo "CONFIG_SECCOMP=y" >> $config_host_mak +fi + +if test "$seccomp_debug" = "yes"; then + echo "CONFIG_SECCOMP_DEBUG=y" >> $config_host_mak +fi + # XXX: suppress that if [ "$bsd" = "yes" ] ; then echo "CONFIG_BSD=y" >> $config_host_mak -- 1.7.9.5