Remove wrs-server-group SDK Module from StarlingX
With the StarlingX move to supporting pure upstream OpenStack, the majority of the SDK Modules are related to functionality no longer supported. The remaining SDK Modules will be moved to StarlingX documentation. Story: 2005275 Task: 30205 Change-Id: Ic0365f07297f0094b46c59d0fc6a62130c681f1e Signed-off-by: Kristine Bujold <kristine.bujold@windriver.com>
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centos_guest_image.inccentos_guest_image_rt.inccentos_iso_image.inccentos_pkg_dirs
devstack
guest-comm
PKG-INFO
centos
host-guest-comm-2.0
@ -9,5 +9,3 @@
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# guest-client
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guest-client
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# host-guest-comm
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guest-host-comm
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@ -9,5 +9,3 @@
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# guest-client
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guest-client
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# host-guest-comm
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guest-host-comm
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@ -2,9 +2,6 @@
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# If these have dependencies, they will be pulled in automatically
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#
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# host-guest-comm
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host-guest-comm
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# nfv
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nfv
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nfv-common
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@ -1,6 +1,5 @@
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nova-api-proxy
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guest-client
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guest-agent
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guest-comm
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nfv
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mtce-guest
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@ -35,11 +35,6 @@ MTCE_GUEST_DIR=$STXNFV_DIR/mtce-guest
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MTCE_GUEST_CONF=$STXNFV_SYSCONFDIR/mtc
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MTCE_GUEST_OCF_DIR=$STXNFV_OCF_ROOT/resource.d/platform
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# guest-comm
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GUEST_COMM_DIR=$STXNFV_DIR/guest-comm
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HOST_AGENT_COMM_VER="2.0"
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HOST_AGENT_COMM_DIR=$GUEST_COMM_DIR/host-guest-comm-$HOST_AGENT_COMM_VER
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# guest-client
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GUEST_CLIENT_VERSION="3.0.1"
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@ -49,11 +49,5 @@ if is_service_enabled guest-agent || is_service_enabled guest-server; then
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done
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fi
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if is_service_enabled guest-scale-helper; then
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# guest-scale-helper needs header files and libraries built from the folder
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# guest-comm
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enable_service host-agent
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fi
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# Initial source of lib script
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source $DEST/stx-nfv/devstack/lib/stx-nfv
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@ -1,12 +0,0 @@
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Metadata-Version: 1.1
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Name: host-guest-comm
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Version: 2.0
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Summary: Titanium Cloud host guest messaging agents, lib, apps
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Home-page:
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Author: Windriver
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Author-email: info@windriver.com
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License: Apache-2.0
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Description: Titanium Cloud host guest messaging agents, lib, apps
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Platform: UNKNOWN
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@ -1,2 +0,0 @@
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SRC_DIR="host-guest-comm-2.0"
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TIS_PATCH_VER=6
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@ -1,174 +0,0 @@
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Summary: Titanium Cloud host guest messaging agents, lib, apps
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Name: host-guest-comm
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Version: 2.0
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Release: %{tis_patch_ver}%{?_tis_dist}
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License: Apache-2.0
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Group: base
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Packager: Wind River <info@windriver.com>
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URL: unknown
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Source0: %{name}-%{version}.tar.gz
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%define cgcs_sdk_deploy_dir /opt/deploy/cgcs_sdk
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BuildRequires: json-c
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BuildRequires: json-c-devel
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BuildRequires: systemd-devel
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Requires: rtld(GNU_HASH)
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Requires: /bin/sh
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Requires: /usr/bin/systemctl
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%description
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Titanium Cloud host/guest messaging agents, guest app library, guest app
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%package -n guest-host-comm
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Summary: Titanium Cloud host guest messaging agents, lib, apps
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Group: base
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Requires: rtld(GNU_HASH)
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Requires(post): rtld(GNU_HASH)
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Requires: systemd
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Requires(post): systemd
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Requires(preun): systemd
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%description -n guest-host-comm
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Titanium Cloud host/guest messaging agents, guest app library, guest app
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%package -n guest-host-comm-dev
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Summary: Titanium Cloud host guest messaging agents, lib, apps
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Group: base
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Requires: guest-host-comm
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%description -n guest-host-comm-dev
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Titanium Cloud host/guest messaging agents, guest app library, guest app
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%package -n %{name}-cgts-sdk
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Summary: Titanium Cloud host guest messaging SDK files
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Group: devel
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%description -n %{name}-cgts-sdk
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Titanium Cloud host guest messaging SDK files
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%package -n host-guest-comm-dbg
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Summary: Titanium Cloud host guest messaging agents, lib, apps - Debugging files
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Group: devel
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%description -n host-guest-comm-dbg
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Titanium Cloud host/guest messaging agents, guest app library, guest app. This
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package contains ELF symbols and related sources for debugging purposes.
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%package -n host-guest-comm-dev
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Summary: Titanium Cloud host guest messaging agents, lib, apps - Development files
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Group: devel
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Requires: host-guest-comm = %{version}-%{release}
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%description -n host-guest-comm-dev
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Titanium Cloud host/guest messaging agents, guest app library, guest app This
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package contains symbolic links, header files, and related items necessary
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for software development.
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%prep
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%setup
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%build
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VER=%{version}
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MAJOR=`echo $VER | awk -F . '{print $1}'`
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MINOR=`echo $VER | awk -F . '{print $2}'`
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PATCH=%{tis_patch_ver}
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make all VER=${VER} MAJOR=${MAJOR} MINOR=${MINOR} PATCH=${PATCH}
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%install
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VER=%{version}
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MAJOR=`echo $VER | awk -F . '{print $1}'`
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MINOR=`echo $VER | awk -F . '{print $2}'`
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PATCH=%{tis_patch_ver}
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make install \
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DESTDIR=%{buildroot} \
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SYSCONFDIR=%{buildroot}%{_sysconfdir} \
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UNITDIR=%{buildroot}%{_unitdir} \
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LIBDIR=%{buildroot}%{_libdir} \
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SDK_DEPLOY_DIR=%{buildroot}%{cgcs_sdk_deploy_dir} \
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MAJOR=${MAJOR} MINOR=${MINOR} PATCH=${PATCH}
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%post
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/usr/bin/systemctl enable host_agent.service
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%postun
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/usr/bin/systemctl disable host_agent.service
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%files
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%defattr(-,root,root,-)
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/usr/lib64/libhostguestmsg.so.2.0.%{tis_patch_ver}
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/usr/lib64/libhostguestmsg.so.2.0
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/usr/lib64/libhostguestmsg.so.2
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/usr/sbin/host_agent
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/etc/pmon.d/host_agent.conf
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/etc/init.d/host_agent
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%{_unitdir}/host_agent.service
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%files -n guest-host-comm
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%defattr(-,root,root,-)
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/usr/lib64/libguesthostmsg.so.2.0.%{tis_patch_ver}
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/usr/lib64/libguesthostmsg.so.2.0
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/usr/lib64/libguesthostmsg.so.2
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/usr/lib64/libservergroup.so.2.0.%{tis_patch_ver}
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/usr/lib64/libservergroup.so.2.0
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/usr/lib64/libservergroup.so.2
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/usr/sbin/server_group_app
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/usr/sbin/guest_agent
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%{_unitdir}/guest-agent.service
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%preun -n guest-host-comm
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%systemd_preun guest-agent.service
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%post -n guest-host-comm
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%systemd_post guest-agent.service
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/usr/bin/systemctl enable guest-agent.service >/dev/null 2>&1
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%files -n guest-host-comm-dev
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%defattr(-,root,root,-)
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/usr/include/cgcs/guest_host_msg.h
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/usr/lib64/libguesthostmsg.so.2.0.%{tis_patch_ver}
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/usr/lib64/libguesthostmsg.so.2.0
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/usr/lib64/libguesthostmsg.so.2
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/usr/lib64/libguesthostmsg.so
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/usr/lib64/libservergroup.so.2.0.%{tis_patch_ver}
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/usr/lib64/libservergroup.so.2.0
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/usr/lib64/libservergroup.so.2
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/usr/lib64/libservergroup.so
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%files -n host-guest-comm-dbg
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%defattr(-,root,root,-)
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/usr/src/debug/host-guest-comm-2.0/server_group_app.c
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/usr/src/debug/host-guest-comm-2.0/server_group.c
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/usr/src/debug/host-guest-comm-2.0/guest_agent.c
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/usr/src/debug/host-guest-comm-2.0/lib_host_guest_msg.c
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/usr/src/debug/host-guest-comm-2.0/host_guest_msg.c
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/usr/src/debug/host-guest-comm-2.0/lib_guest_host_msg.c
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/usr/src/debug/host-guest-comm-2.0/host_guest_msg_type.h
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/usr/src/debug/host-guest-comm-2.0/host_instance_mgmt.h
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/usr/src/debug/host-guest-comm-2.0/host_instance_mgmt.c
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/usr/src/debug/host-guest-comm-2.0/guest_host_msg.h
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/usr/src/debug/host-guest-comm-2.0/host_guest_msg.h
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/usr/src/debug/host-guest-comm-2.0/host_agent.c
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/usr/src/debug/host-guest-comm-2.0/server_group.h
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%files -n host-guest-comm-dev
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%defattr(-,root,root,-)
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/usr/include/cgcs/host_guest_msg.h
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/usr/lib64/libhostguestmsg.so.2.0.%{tis_patch_ver}
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/usr/lib64/libhostguestmsg.so.2.0
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/usr/lib64/libhostguestmsg.so.2
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/usr/lib64/libhostguestmsg.so
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%files -n %{name}-cgts-sdk
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%{cgcs_sdk_deploy_dir}/wrs-server-group-%{version}.%{tis_patch_ver}.tgz
|
@ -1,202 +0,0 @@
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|
||||
Apache License
|
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Version 2.0, January 2004
|
||||
http://www.apache.org/licenses/
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|
||||
replaced with your own identifying information. (Don't include
|
||||
the brackets!) The text should be enclosed in the appropriate
|
||||
comment syntax for the file format. We also recommend that a
|
||||
file or class name and description of purpose be included on the
|
||||
same "printed page" as the copyright notice for easier
|
||||
identification within third-party archives.
|
||||
|
||||
Copyright [yyyy] [name of copyright owner]
|
||||
|
||||
Licensed under the Apache License, Version 2.0 (the "License");
|
||||
you may not use this file except in compliance with the License.
|
||||
You may obtain a copy of the License at
|
||||
|
||||
http://www.apache.org/licenses/LICENSE-2.0
|
||||
|
||||
Unless required by applicable law or agreed to in writing, software
|
||||
distributed under the License is distributed on an "AS IS" BASIS,
|
||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
See the License for the specific language governing permissions and
|
||||
limitations under the License.
|
@ -1,175 +0,0 @@
|
||||
#
|
||||
# Copyright(c) 2013-2016, Wind River Systems, Inc. All rights reserved.
|
||||
# All rights reserved.
|
||||
#
|
||||
# Redistribution and use in source and binary forms, with or without
|
||||
# modification, are permitted provided that the following conditions
|
||||
# are met:
|
||||
#
|
||||
# * Redistributions of source code must retain the above copyright
|
||||
# notice, this list of conditions and the following disclaimer.
|
||||
# * Redistributions in binary form must reproduce the above copyright
|
||||
# notice, this list of conditions and the following disclaimer in
|
||||
# the documentation and/or other materials provided with the
|
||||
# distribution.
|
||||
# * Neither the name of Wind River Systems nor the names of its
|
||||
# contributors may be used to endorse or promote products derived
|
||||
# from this software without specific prior written permission.
|
||||
#
|
||||
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
# "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 COPYRIGHT
|
||||
# OWNER OR CONTRIBUTORS 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.
|
||||
#
|
||||
|
||||
# Note: if you change either Makefile or Makefile.sdk you need to manually
|
||||
# do a "make clean" and then "make".
|
||||
|
||||
# Import the Makefile that we give to the customer so we eat our own dogfood
|
||||
include Makefile.sdk
|
||||
|
||||
DESTDIR ?= /
|
||||
SYSCONFDIR ?= /etc
|
||||
UNITDIR ?= /usr/lib/systemd/system
|
||||
LIBDIR ?= /usr/lib64
|
||||
SDK_DEPLOY_DIR ?= /opt/deploy/cgcs_sdk
|
||||
MAJOR ?= 2
|
||||
MINOR ?= 0
|
||||
VERSION ?= $(MAJOR).$(MINOR)
|
||||
PATCH ?= 0
|
||||
|
||||
# This needs to be extended from what the customer will build.
|
||||
EXECS += host_agent
|
||||
BINEXECS=$(addprefix $(BINDIR)/, $(EXECS))
|
||||
|
||||
HOST_AGENT_SRCS = host_guest_msg.c host_agent.c host_instance_mgmt.c
|
||||
HOST_AGENT_OBJ := $(patsubst %,$(ODIR)/%,$(HOST_AGENT_SRCS:.c=.o))
|
||||
|
||||
LIBHOSTGUESTMSG_SRCS := lib_host_guest_msg.c
|
||||
LIBHOSTGUESTMSG_OBJ := $(patsubst %,$(ODIR)/%,$(LIBHOSTGUESTMSG_SRCS:.c=.o))
|
||||
LIBHOSTGUESTMSG := hostguestmsg
|
||||
LIBHOSTGUESTMSG_SO := $(patsubst %,lib%.so,$(LIBHOSTGUESTMSG))
|
||||
LIBHOSTGUESTMSG_DEP := $(patsubst %,$(LIBDIR)/%,$(LIBHOSTGUESTMSG_SO))
|
||||
|
||||
LIBS= $(LIBHOSTGUESTMSG)
|
||||
LIBDEPS:=$(patsubst %,$(LIBDIR)/lib%.so,$(LIBS))
|
||||
|
||||
EXPORT_SDK := wrs-server-group-$(MAJOR).$(MINOR).$(PATCH)
|
||||
|
||||
# Add the host build as a dependency to the SDK build
|
||||
all: host_all
|
||||
host_all: $(BINEXECS) $(LIBDEPS) sdk/$(EXPORT_SDK).tgz
|
||||
|
||||
OBJS = $(HOST_AGENT_OBJ)
|
||||
DEPS = $(OBJS:.o=.d) sdk/sdk.d
|
||||
-include $(DEPS)
|
||||
|
||||
# The dependency tracking for the SDK tarball is rather crude. If any
|
||||
# file changes they're all copied over again. This is quick, so it's
|
||||
# not worth getting fancy.
|
||||
sdk/$(EXPORT_SDK).tgz:
|
||||
@echo "Making SDK"
|
||||
@mkdir -p sdk/$(EXPORT_SDK)
|
||||
@mkdir -p sdk/$(EXPORT_SDK)/lib
|
||||
@mkdir -p sdk/$(EXPORT_SDK)/bin
|
||||
@mkdir -p sdk/$(EXPORT_SDK)/obj
|
||||
@mkdir -p sdk/$(EXPORT_SDK)/scripts
|
||||
@cp scripts/guest-agent.service sdk/$(EXPORT_SDK)/scripts
|
||||
@echo "MAJOR=$(MAJOR)" > sdk/$(EXPORT_SDK)/Makefile
|
||||
@echo "MINOR=$(MINOR)" >> sdk/$(EXPORT_SDK)/Makefile
|
||||
@echo "PATCH=$(PATCH)" >> sdk/$(EXPORT_SDK)/Makefile
|
||||
@cat Makefile.sdk >> sdk/$(EXPORT_SDK)/Makefile
|
||||
@cp LICENSE sdk/$(EXPORT_SDK)
|
||||
@cp docs/README.txt sdk/$(EXPORT_SDK)
|
||||
@cp docs/TiS-Guest-Server-Group-Messaging.pdf sdk/$(EXPORT_SDK)
|
||||
@cp $(GUEST_CLIENT_APP_SRCS) sdk/$(EXPORT_SDK)
|
||||
@cp $(LIBSERVERGROUP_SRCS) sdk/$(EXPORT_SDK)
|
||||
@cp $(LIBGUESTHOSTMSG_SRCS) sdk/$(EXPORT_SDK)
|
||||
@cp $(GUEST_AGENT_SRCS) sdk/$(EXPORT_SDK)
|
||||
@cp host_guest_msg_type.h server_group.h misc.h guest_host_msg.h sdk/$(EXPORT_SDK)
|
||||
|
||||
@cd sdk && tar czf $(EXPORT_SDK).tgz $(EXPORT_SDK)
|
||||
@echo -n "sdk/$(EXPORT_SDK).tgz: Makefile.sdk docs/README.txt docs/TiS-Guest-Server-Group-Messaging.pdf " > sdk/sdk.d
|
||||
@echo -n "scripts/guest-agent.service " >> sdk/sdk.d
|
||||
@echo -n "$(GUEST_CLIENT_APP_SRCS) $(LIBSERVERGROUP_SRCS) $(GUEST_AGENT_SRCS) $(LIBGUESTHOSTMSG_SRCS)" >> sdk/sdk.d
|
||||
@echo " host_guest_msg.h server_group.h misc.h" >> sdk/sdk.d
|
||||
@echo '*' > sdk/.gitignore
|
||||
|
||||
$(LIBHOSTGUESTMSG_DEP): CFLAGS2 = -fPIC
|
||||
$(LIBHOSTGUESTMSG_DEP): $(LIBHOSTGUESTMSG_OBJ)
|
||||
$(CC) -shared -Wl,-soname,$(LIBHOSTGUESTMSG_SO).$(MAJOR) $^ -o $(LIBHOSTGUESTMSG_DEP).$(MAJOR).$(MINOR).$(PATCH)
|
||||
ln -sf $(LIBHOSTGUESTMSG_SO).$(MAJOR).$(MINOR).$(PATCH) $(LIBHOSTGUESTMSG_DEP).$(MAJOR)
|
||||
ln -sf $(LIBHOSTGUESTMSG_SO).$(MAJOR) $(LIBHOSTGUESTMSG_DEP)
|
||||
|
||||
$(BINDIR)/host_agent: $(HOST_AGENT_OBJ)
|
||||
$(CC) -o $@ $^ $(LDFLAGS) -lrt -ljson-c
|
||||
|
||||
install:
|
||||
install -m 750 -d $(DESTDIR)/usr/sbin
|
||||
install -m 755 -d $(DESTDIR)/usr/lib64
|
||||
install -m 755 -d $(DESTDIR)/usr/include
|
||||
install -m 755 -d $(DESTDIR)/usr/include/cgcs
|
||||
install -m 750 -d $(SYSCONFDIR)/init.d
|
||||
install -m 750 -d $(SYSCONFDIR)/pmon.d
|
||||
install -m 750 -d $(UNITDIR)
|
||||
|
||||
install -m 750 -d $(DESTDIR)/usr
|
||||
install -m 750 -d $(DESTDIR)/usr/src
|
||||
install -m 750 -d $(DESTDIR)/usr/src/debug
|
||||
install -m 750 -d $(DESTDIR)/usr/src/debug/host-guest-comm-$(VERSION)
|
||||
|
||||
install -m 644 host_guest_msg_type.h $(DESTDIR)/usr/src/debug/host-guest-comm-$(VERSION)/host_guest_msg_type.h
|
||||
install -m 644 server_group_app.c $(DESTDIR)/usr/src/debug/host-guest-comm-$(VERSION)/server_group_app.c
|
||||
install -m 644 server_group.c $(DESTDIR)/usr/src/debug/host-guest-comm-$(VERSION)/server_group.c
|
||||
install -m 644 guest_agent.c $(DESTDIR)/usr/src/debug/host-guest-comm-$(VERSION)/guest_agent.c
|
||||
install -m 644 lib_host_guest_msg.c $(DESTDIR)/usr/src/debug/host-guest-comm-$(VERSION)/lib_host_guest_msg.c
|
||||
install -m 644 host_guest_msg.c $(DESTDIR)/usr/src/debug/host-guest-comm-$(VERSION)/host_guest_msg.c
|
||||
install -m 644 lib_guest_host_msg.c $(DESTDIR)/usr/src/debug/host-guest-comm-$(VERSION)/lib_guest_host_msg.c
|
||||
install -m 644 host_instance_mgmt.h $(DESTDIR)/usr/src/debug/host-guest-comm-$(VERSION)/host_instance_mgmt.h
|
||||
install -m 644 host_instance_mgmt.c $(DESTDIR)/usr/src/debug/host-guest-comm-$(VERSION)/host_instance_mgmt.c
|
||||
install -m 644 guest_host_msg.h $(DESTDIR)/usr/src/debug/host-guest-comm-$(VERSION)/guest_host_msg.h
|
||||
install -m 644 host_guest_msg.h $(DESTDIR)/usr/src/debug/host-guest-comm-$(VERSION)/host_guest_msg.h
|
||||
install -m 644 host_agent.c $(DESTDIR)/usr/src/debug/host-guest-comm-$(VERSION)/host_agent.c
|
||||
install -m 644 server_group.h $(DESTDIR)/usr/src/debug/host-guest-comm-$(VERSION)/server_group.h
|
||||
|
||||
install -m 750 scripts/host_agent $(SYSCONFDIR)/init.d/host_agent
|
||||
install -m 644 scripts/host_agent.service $(UNITDIR)/host_agent.service
|
||||
install -m 644 scripts/guest-agent.service $(UNITDIR)/guest-agent.service
|
||||
install -m 640 scripts/host_agent.conf $(SYSCONFDIR)/pmon.d/host_agent.conf
|
||||
install -m 750 bin/host_agent $(DESTDIR)/usr/sbin/host_agent
|
||||
install -m 750 bin/guest_agent $(DESTDIR)/usr/sbin/guest_agent
|
||||
install -m 750 bin/server_group_app $(DESTDIR)/usr/sbin/server_group_app
|
||||
install -m 644 guest_host_msg.h $(DESTDIR)/usr/include/cgcs/guest_host_msg.h
|
||||
install -m 644 host_guest_msg.h $(DESTDIR)/usr/include/cgcs/host_guest_msg.h
|
||||
|
||||
# Deploy to the SDK deployment directory
|
||||
|
||||
install -d $(SDK_DEPLOY_DIR)
|
||||
install -m 644 sdk/wrs-server-group-$(VERSION).$(PATCH).tgz $(SDK_DEPLOY_DIR)/wrs-server-group-$(VERSION).$(PATCH).tgz
|
||||
|
||||
install -m 755 -p -D lib/libguesthostmsg.so.$(MAJOR).$(MINOR).$(PATCH) $(LIBDIR)/libguesthostmsg.so.$(MAJOR).$(MINOR).$(PATCH)
|
||||
ln -s libguesthostmsg.so.$(MAJOR).$(MINOR).$(PATCH) $(LIBDIR)/libguesthostmsg.so.$(MAJOR).$(MINOR)
|
||||
ln -s libguesthostmsg.so.$(MAJOR).$(MINOR).$(PATCH) $(LIBDIR)/libguesthostmsg.so.$(MAJOR)
|
||||
ln -s libguesthostmsg.so.$(MAJOR).$(MINOR).$(PATCH) $(LIBDIR)/libguesthostmsg.so
|
||||
|
||||
install -m 755 -p -D lib/libhostguestmsg.so.$(MAJOR).$(MINOR).$(PATCH) $(LIBDIR)/libhostguestmsg.so.$(MAJOR).$(MINOR).$(PATCH)
|
||||
ln -s libhostguestmsg.so.$(MAJOR).$(MINOR).$(PATCH) $(LIBDIR)/libhostguestmsg.so.$(MAJOR).$(MINOR)
|
||||
ln -s libhostguestmsg.so.$(MAJOR).$(MINOR).$(PATCH) $(LIBDIR)/libhostguestmsg.so.$(MAJOR)
|
||||
ln -s libhostguestmsg.so.$(MAJOR).$(MINOR).$(PATCH) $(LIBDIR)/libhostguestmsg.so
|
||||
|
||||
install -m 755 -p -D lib/libservergroup.so.$(MAJOR).$(MINOR).$(PATCH) $(LIBDIR)/libservergroup.so.$(MAJOR).$(MINOR).$(PATCH)
|
||||
ln -s libservergroup.so.$(MAJOR).$(MINOR).$(PATCH) $(LIBDIR)/libservergroup.so.$(MAJOR).$(MINOR)
|
||||
ln -s libservergroup.so.$(MAJOR).$(MINOR).$(PATCH) $(LIBDIR)/libservergroup.so.$(MAJOR)
|
||||
ln -s libservergroup.so.$(MAJOR).$(MINOR).$(PATCH) $(LIBDIR)/libservergroup.so
|
||||
|
||||
# Add the host clean as a dependency to the SDK stuff
|
||||
clean: host_clean
|
||||
host_clean:
|
||||
rm -rf sdk
|
@ -1,118 +0,0 @@
|
||||
#
|
||||
# Copyright(c) 2013-2016, Wind River Systems, Inc. All rights reserved.
|
||||
# All rights reserved.
|
||||
#
|
||||
# Redistribution and use in source and binary forms, with or without
|
||||
# modification, are permitted provided that the following conditions
|
||||
# are met:
|
||||
#
|
||||
# * Redistributions of source code must retain the above copyright
|
||||
# notice, this list of conditions and the following disclaimer.
|
||||
# * Redistributions in binary form must reproduce the above copyright
|
||||
# notice, this list of conditions and the following disclaimer in
|
||||
# the documentation and/or other materials provided with the
|
||||
# distribution.
|
||||
# * Neither the name of Wind River Systems nor the names of its
|
||||
# contributors may be used to endorse or promote products derived
|
||||
# from this software without specific prior written permission.
|
||||
#
|
||||
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
# "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 COPYRIGHT
|
||||
# OWNER OR CONTRIBUTORS 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.
|
||||
#
|
||||
|
||||
.PHONY: all clean
|
||||
|
||||
EXECS= guest_agent server_group_app
|
||||
|
||||
CFLAGS= -g -Wall -Wformat -Wformat-security
|
||||
LDFLAGS =
|
||||
|
||||
ODIR=obj
|
||||
BINDIR=bin
|
||||
LIBDIR=lib
|
||||
INCDIR=include/cgcs
|
||||
|
||||
_DEPS = *.h
|
||||
DEPS = $(patsubst %,$(IDIR)/%,$(_DEPS))
|
||||
|
||||
GUEST_AGENT_SRCS = host_guest_msg.c guest_agent.c
|
||||
GUEST_AGENT_OBJ := $(patsubst %,$(ODIR)/%,$(GUEST_AGENT_SRCS:.c=.o))
|
||||
|
||||
GUEST_CLIENT_APP_SRCS = server_group_app.c
|
||||
GUEST_CLIENT_APP_OBJ := $(patsubst %,$(ODIR)/%,$(GUEST_CLIENT_APP_SRCS:.c=.o))
|
||||
|
||||
LIBGUESTHOSTMSG_SRCS := lib_guest_host_msg.c
|
||||
LIBGUESTHOSTMSG_INCLUDES := guest_host_msg.h
|
||||
LIBGUESTHOSTMSG_OBJ := $(patsubst %,$(ODIR)/%,$(LIBGUESTHOSTMSG_SRCS:.c=.o))
|
||||
LIBGUESTHOSTMSG := guesthostmsg
|
||||
LIBGUESTHOSTMSG_SO := $(patsubst %,lib%.so,$(LIBGUESTHOSTMSG))
|
||||
LIBGUESTHOSTMSG_DEP := $(patsubst %,$(LIBDIR)/%,$(LIBGUESTHOSTMSG_SO))
|
||||
|
||||
LIBSERVERGROUP_SRCS := server_group.c
|
||||
LIBSERVERGROUP_INCLUDES := server_group.h
|
||||
LIBSERVERGROUP_OBJ := $(patsubst %,$(ODIR)/%,$(LIBSERVERGROUP_SRCS:.c=.o))
|
||||
LIBSERVERGROUP := servergroup
|
||||
LIBSERVERGROUP_SO := $(patsubst %,lib%.so,$(LIBSERVERGROUP))
|
||||
LIBSERVERGROUP_DEP := $(patsubst %,$(LIBDIR)/%,$(LIBSERVERGROUP_SO))
|
||||
|
||||
LIBS= $(LIBSERVERGROUP) $(LIBGUESTHOSTMSG)
|
||||
INCLUDES= $(LIBGUESTHOSTMSG_INCLUDES) $(LIBSERVERGROUP_INCLUDES)
|
||||
|
||||
BINEXECS=$(addprefix $(BINDIR)/, $(EXECS))
|
||||
|
||||
LIBDEPS:=$(patsubst %,$(LIBDIR)/lib%.so,$(LIBS))
|
||||
|
||||
INCDEPS:=$(addprefix $(INCDIR)/, $(INCLUDES))
|
||||
|
||||
all: $(BINEXECS) $(LIBDEPS) $(INCDIR) $(INCDEPS)
|
||||
|
||||
OBJS = $(GUEST_AGENT_OBJ) $(LIBSERVERGROUP_OBJ) $(GUEST_CLIENT_APP_OBJ)
|
||||
DEPS = $(OBJS:.o=.d)
|
||||
-include $(DEPS)
|
||||
|
||||
$(ODIR)/%.o: %.c
|
||||
$(CC) -c $(CFLAGS) $(CFLAGS2) -MMD -o $@ $<
|
||||
|
||||
$(INCDIR):
|
||||
mkdir -p $(INCDIR)
|
||||
|
||||
$(INCDIR)/%.h: %.h $(INCDIR)
|
||||
cp $< $@
|
||||
|
||||
vpath %.h .
|
||||
|
||||
# the version of make in wrl5 seems to have a problem with target-specific
|
||||
# variable values. It can't handle just doing "CFLAGS += -fPIC". Same thing
|
||||
# for LDFLAGS below. This seems to work as a workaround.
|
||||
$(LIBSERVERGROUP_DEP): CFLAGS2 = -fPIC
|
||||
$(LIBSERVERGROUP_DEP): $(LIBSERVERGROUP_OBJ)
|
||||
$(CC) -shared -Wl,-soname,$(LIBSERVERGROUP_SO).$(MAJOR) $^ -o $(LIBSERVERGROUP_DEP).$(MAJOR).$(MINOR).$(PATCH)
|
||||
ln -sf $(LIBSERVERGROUP_SO).$(MAJOR).$(MINOR).$(PATCH) $(LIBSERVERGROUP_DEP).$(MAJOR)
|
||||
ln -sf $(LIBSERVERGROUP_SO).$(MAJOR) $(LIBSERVERGROUP_DEP)
|
||||
|
||||
$(LIBGUESTHOSTMSG_DEP): CFLAGS2 = -fPIC
|
||||
$(LIBGUESTHOSTMSG_DEP): $(LIBGUESTHOSTMSG_OBJ)
|
||||
$(CC) -shared -Wl,-soname,$(LIBGUESTHOSTMSG_SO).$(MAJOR) $^ -o $(LIBGUESTHOSTMSG_DEP).$(MAJOR).$(MINOR).$(PATCH)
|
||||
ln -sf $(LIBGUESTHOSTMSG_SO).$(MAJOR).$(MINOR).$(PATCH) $(LIBGUESTHOSTMSG_DEP).$(MAJOR)
|
||||
ln -sf $(LIBGUESTHOSTMSG_SO).$(MAJOR) $(LIBGUESTHOSTMSG_DEP)
|
||||
|
||||
$(BINDIR)/guest_agent: LDFLAGS2 = -rdynamic
|
||||
$(BINDIR)/guest_agent: $(GUEST_AGENT_OBJ)
|
||||
$(CC) -o $@ $^ $(LDFLAGS) $(LDFLAGS2) -ljson-c
|
||||
|
||||
$(BINDIR)/server_group_app: LDFLAGS2 = -l$(LIBSERVERGROUP) -L$(LIBDIR)
|
||||
$(BINDIR)/server_group_app: $(GUEST_CLIENT_APP_OBJ) $(LIBSERVERGROUP_DEP)
|
||||
$(CC) -o $@ $^ $(LDFLAGS) $(LDFLAGS2) -ljson-c
|
||||
|
||||
|
||||
clean:
|
||||
rm -rf $(ODIR)/* *~ core $(BINDIR)/* $(LIBDIR)/*
|
@ -1,4 +0,0 @@
|
||||
# Ignore everything in this directory
|
||||
*
|
||||
# Except this file
|
||||
!.gitignore
|
@ -1,257 +0,0 @@
|
||||
|
||||
Copyright(c) 2013-2016, Wind River Systems, Inc.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without
|
||||
modification, are permitted provided that the following conditions
|
||||
are met:
|
||||
|
||||
* Redistributions of source code must retain the above copyright
|
||||
notice, this list of conditions and the following disclaimer.
|
||||
* Redistributions in binary form must reproduce the above copyright
|
||||
notice, this list of conditions and the following disclaimer in
|
||||
the documentation and/or other materials provided with the
|
||||
distribution.
|
||||
* Neither the name of Wind River Systems nor the names of its
|
||||
contributors may be used to endorse or promote products derived
|
||||
from this software without specific prior written permission.
|
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
"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 COPYRIGHT
|
||||
OWNER OR CONTRIBUTORS 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.
|
||||
-----------------------------------------------------------------------
|
||||
|
||||
DESCRIPTION
|
||||
===========
|
||||
|
||||
Server Group Messaging is a service to provide simple low-bandwidth datagram
|
||||
messaging and notifications for servers that are part of the same server group.
|
||||
This messaging channel is available regardless of whether IP networking is
|
||||
functional within the server, and it requires no knowledge within the server
|
||||
about the other members of the group.
|
||||
|
||||
The service provides three types of messaging:
|
||||
1) Broadcast: this allows a server to send a datagram (size of up to 3050 bytes)
|
||||
to all other servers within the server group.
|
||||
|
||||
2) Notification: this provides servers with information about changes to the
|
||||
state of other servers within the server group.
|
||||
|
||||
3) Status: this allows a server to query the current state of all servers within
|
||||
the server group (including itself).
|
||||
|
||||
This service is not intended for high bandwidth or low-latency operations. It
|
||||
is best-effort, not reliable. Applications should do end-to-end acks and
|
||||
retries if they care about reliability.
|
||||
|
||||
|
||||
REQUIREMENTS
|
||||
============
|
||||
Compilation:
|
||||
Linux OS, x86_64 architecture
|
||||
gcc compiler
|
||||
development libraries and headers for glibc
|
||||
development libraries and headers for json-c
|
||||
|
||||
VM Runtime:
|
||||
Linux OS, x86_64 architecture
|
||||
runtime libraries for glibc
|
||||
runtime libraries for json-c
|
||||
|
||||
The code has been tested with glibc 2.15, gcc 4.6 and json-c 0.12.99 but it
|
||||
should run on other versions without difficulty.
|
||||
|
||||
|
||||
DELIVERABLE
|
||||
===========
|
||||
The Server Group Messaging service is delivered as source with the
|
||||
required makefiles in a compressed tarball called
|
||||
"wrs-server-group-2.0.0.tgz", such that it can be compiled for the applicable
|
||||
guest linux distribution.
|
||||
|
||||
|
||||
COMPILE
|
||||
=======
|
||||
Install the prerequisites:
|
||||
On CentOS/RHEL: yum install json-c-devel make gcc glibc-devel
|
||||
On Ubuntu/Debian: sudo apt-get install build-essential libjson0-dev
|
||||
|
||||
Extract the tarball contents:
|
||||
tar xvf wrs-server-group-#.#.#.tgz
|
||||
|
||||
To compile:
|
||||
cd wrs-server-group-#.#.#
|
||||
make
|
||||
export WRS_SERVER_GROUP_DIR=${PWD}
|
||||
|
||||
This will produce:
|
||||
|
||||
1) An executable "bin/guest_agent". This acts as a relay between the guest and
|
||||
the host. This executable must be installed into the guest and configured to
|
||||
run at startup. It should be configured to respawn (via /etc/inittab or some
|
||||
other process monitor) if it dies for any reason.
|
||||
|
||||
Typical manual installation commands:
|
||||
sudo cp bin/* /usr/sbin
|
||||
sudo cp scripts/guest-agent.service /lib/systemd/system/
|
||||
sudo systemctl enable guest-agent.service
|
||||
sudo systemctl start guest-agent.service
|
||||
|
||||
2) A library "lib/libservergroup.so.2.0.*". This encapsulates the details of
|
||||
talking to the guest agent. This can be used with the header file
|
||||
"server_group.h" to create custom applications that can make use of the
|
||||
messaging service. This should be installed within the guest in a suitable
|
||||
library location such that the linker can find it. It should also be installed
|
||||
in the build system where custom applications can link against it. The
|
||||
"libservergroup.so.2" symlink should be created in the build system and the
|
||||
guest, and the "libservergroup.so" symlink should be created in the build
|
||||
system, either by ldconfig or some other means.
|
||||
|
||||
Typical manual installation commands:
|
||||
sudo cp -P lib/libservergroup.* /usr/lib/
|
||||
sudo ldconfig
|
||||
|
||||
3) A header file "include/cgcs/server_group.h". This is used along with the library to
|
||||
create custom applications that can make use of the messaging service. This
|
||||
should be installed in the build system where custom applications can include
|
||||
it.
|
||||
|
||||
4) A sample program "bin/server_group_app" is created in order to show the use
|
||||
of the APIs and validate that they are working properly in the guest.
|
||||
|
||||
5) A library "lib/libguesthostmsg.so.2.0.*". This library is used by
|
||||
wrs-guest-scale component packaged separately. This can be used with the
|
||||
header file "guest_host_msg.h". This should be installed within
|
||||
the guest in a suitable library location such that the linker can find it.
|
||||
It should also be installed in the build system where custom applications can
|
||||
link against it. The "libguesthostmsg.so.2" symlink should be created in the
|
||||
build system and the guest, and the "libguesthostmsg.so" symlink should be
|
||||
created in the build system, either by ldconfig or some other means.
|
||||
|
||||
Typical manual installation commands:
|
||||
sudo cp -P lib/libguesthostmsg.* /usr/lib/
|
||||
sudo ldconfig
|
||||
|
||||
6) A header file "include/cgcs/guest_host_msg.h". This is used along with
|
||||
the library to create custom applications that can make use of the messaging
|
||||
service. This should be installed in the build system where custom
|
||||
applications can include it. (Setting the WRS_SERVER_GROUP_DIR environment as above
|
||||
variable will allow it to be found when building the wrs-guest-scale component.)
|
||||
|
||||
|
||||
Note:
|
||||
The inclusion of the files into the build system and the guest image and the
|
||||
configuration of the guest startup scripts is left up to the user to allow for
|
||||
different build systems and init subsystems in the guest.
|
||||
|
||||
|
||||
INSTALL
|
||||
=======
|
||||
Installing in a running VM:
|
||||
|
||||
As the root user
|
||||
1) Copy "bin/guest_agent" and any other desired binaries such as
|
||||
"bin/server_group_app" to /usr/sbin in the VM.
|
||||
|
||||
2) Run "cp -P lib/* /usr/lib" (or /usr/lib64 as appropriate) in the VM
|
||||
to install the libraries.
|
||||
|
||||
3) Run "ldconfig".
|
||||
|
||||
4) Copy scripts/guest-agent.service to /lib/systemd/system/ and then run
|
||||
"systemctl enable guest-agent.service" and "systemctl start guest-agent.service".
|
||||
This should cause the "guest-agent" binary to start running.
|
||||
|
||||
5) Applications can now make use of the service.
|
||||
|
||||
6) Run "cp -r include/cgcs /usr/include/" to set up the headers for anyone
|
||||
wanting to link against libservergroup or libguesthostmsg.
|
||||
|
||||
As part of building the VM ISO Image:
|
||||
|
||||
1) Ensure "bin/guest_agent" and any other desired binaries get installed
|
||||
to /usr/sbin in the VM filesystem.
|
||||
|
||||
2) Ensure "lib/*" gets installed to /usr/lib64 in the VM filesystem.
|
||||
|
||||
3) Ensure that "ldconfig" will run at VM startup.
|
||||
|
||||
4) Ensure that "/usr/sbin/guest_agent" is configured to run automatically
|
||||
at VM startup and to respawn if it dies for any reason. The scripts/
|
||||
guest_agent.service file is provided for use by systemd.
|
||||
|
||||
|
||||
USAGE
|
||||
=====
|
||||
The service is designed to be simple to use. A basic description is given
|
||||
below, but more details are provided in the header file.
|
||||
|
||||
First, the application must call init_sg(). This call takes three function
|
||||
pointers corresponding to callbacks for the various message types. If an
|
||||
application doesn't intend to use one or more of the message types then the
|
||||
appropriate function pointers can be specified as NULL. The function returns a
|
||||
socket that must be monitored for activity using select/poll/etc.
|
||||
|
||||
When the socket becomes readable, the application must call process_sg_msg().
|
||||
This may result in callbacks being called so be careful about deadlock.
|
||||
|
||||
In order to send a broadcast message to every server in the server group, the
|
||||
application can call sg_msg_broadcast().
|
||||
|
||||
In order to request the status of all servers in the group, the application can
|
||||
call sg_request_status().
|
||||
|
||||
The sg_broadcast_msg_handler_t() callback will be called when receiving a server
|
||||
group broadcast message. It will be passed the message as well as a
|
||||
null-terminated string containing the instance name of the sender.
|
||||
|
||||
The sg_notification_msg_handler_t() callback will be called when receiving a
|
||||
notification message indicating a status change in one of the members of the
|
||||
server group. The msg is JSON-formatted, essentially the normal notification
|
||||
that gets sent out by OpenStack's notification service, but with some
|
||||
non-relevant information removed to keep the message shorter.
|
||||
|
||||
The sg_status_msg_handler_t() callback will be called when receiving the
|
||||
response to a status query. The message is a JSON-formatted list of
|
||||
dictionaries, each of which represents a single server.
|
||||
|
||||
|
||||
SAMPLE APPLICATION
|
||||
==================
|
||||
The "server_group_app" sample application can be used to test the various types
|
||||
of messages. It takes one optional argument, consisting of a character string
|
||||
in quotes. When run, it behaves as follows:
|
||||
|
||||
1) It registers for all three callbacks.
|
||||
2) If the optional argument was specified it sends that string as a server group
|
||||
broadcast message.
|
||||
3) It requests the group status.
|
||||
4) It then goes into a loop waiting for incoming messages. Any incoming message
|
||||
will be printed out along with information about the type of message.
|
||||
|
||||
|
||||
The service can be validated as follows using the "server_group_app" sample
|
||||
application:
|
||||
a) Create a server group with the "affinity" scheduler policy.
|
||||
b) Start up a server within the server group.
|
||||
c) Run "server_group_app" in the first server. You should immediately see the
|
||||
status response message containing information about that server.
|
||||
d) Start up a second server within the server group. You should see
|
||||
notification messages being received in the first server.
|
||||
e) Run 'server_group_app "this is a test"' on the second server. You should see
|
||||
"this is a test" received as a broadcast message on the first server. The
|
||||
second server should show a status response with information about both
|
||||
servers
|
||||
f) Start up a third server within the server group. You should see
|
||||
notification messages being received in the other two servers.
|
||||
g) Run 'server_group_app "final test"' on the second server. You should see
|
||||
"final test" received as a broadcast message on the other two servers. The
|
||||
second server should show a status response with information about all three
|
||||
servers
|
Binary file not shown.
Binary file not shown.
@ -1,503 +0,0 @@
|
||||
/*
|
||||
* Copyright (c) 2013-2016, Wind River Systems, Inc.
|
||||
*
|
||||
* 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 above copyright notice,
|
||||
* this list of conditions and the following disclaimer.
|
||||
*
|
||||
* 2) Redistributions in binary form must reproduce the above copyright notice,
|
||||
* this list of conditions and the following disclaimer in the documentation and/or
|
||||
* other materials provided with the distribution.
|
||||
*
|
||||
* 3) Neither the name of Wind River Systems nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software without specific
|
||||
* prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER OR CONTRIBUTORS 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.
|
||||
*/
|
||||
|
||||
/**
|
||||
*/
|
||||
|
||||
#define _GNU_SOURCE /* for memmem() */
|
||||
|
||||
#include <stddef.h>
|
||||
#include <errno.h>
|
||||
#include <error.h>
|
||||
#include <fcntl.h>
|
||||
#include <poll.h>
|
||||
#include <pthread.h>
|
||||
#include <stdbool.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <stdint.h>
|
||||
#include <string.h>
|
||||
#include <unistd.h>
|
||||
#include <sys/stat.h>
|
||||
#include <sys/types.h>
|
||||
#include <sys/wait.h>
|
||||
#include <sys/select.h>
|
||||
#include <sys/un.h>
|
||||
#include <sys/socket.h>
|
||||
#include <syslog.h>
|
||||
#include <limits.h>
|
||||
#include <signal.h>
|
||||
#include <execinfo.h>
|
||||
#include <json-c/json.h>
|
||||
|
||||
#include "host_guest_msg_type.h"
|
||||
|
||||
/*
|
||||
Notes on virtio-serial in guest:
|
||||
1) The fact that POLLHUP is always set in revents when host connection is down
|
||||
means that the only way to get event-driven notification of connection is to
|
||||
register for SIGIO. However, then we get a SIGIO every time the device becomes
|
||||
readable. The solution is to selectively block SIGIO as long as we think the link
|
||||
is up, then unblock it so we get notified when the link comes back.
|
||||
|
||||
2) If the host disconnects we will still process any buffered messages from it.
|
||||
|
||||
3) If read() returns 0 or write() returns -1 with errno of EAGAIN that means
|
||||
the host is disconnected.
|
||||
*/
|
||||
|
||||
// Tokener serves as reassembly buffer for host connection.
|
||||
struct json_tokener* tok;
|
||||
|
||||
int host_fd;
|
||||
int app_fd;
|
||||
|
||||
volatile sig_atomic_t check_host_connection=1;
|
||||
volatile sig_atomic_t initial_connection=1;
|
||||
|
||||
// Currently we only use 2 fds, one for server group messaging and one for the
|
||||
// connection to the host.
|
||||
#define MAX_FDS_GUEST 10
|
||||
|
||||
// Message has arrived from the host.
|
||||
// This assumes the message has been validated
|
||||
void process_msg(json_object *jobj_msg, int fd)
|
||||
{
|
||||
int rc;
|
||||
struct sockaddr_un cliaddr;
|
||||
int addrlen;
|
||||
|
||||
// parse version
|
||||
struct json_object *jobj_version;
|
||||
if (!json_object_object_get_ex(jobj_msg, VERSION, &jobj_version)) {
|
||||
PRINT_ERR("failed to parse version\n");
|
||||
return;
|
||||
}
|
||||
int version = json_object_get_int(jobj_version);
|
||||
if (version != CUR_VERSION) {
|
||||
PRINT_ERR("received version %d, expected %d\n", version, CUR_VERSION);
|
||||
return;
|
||||
}
|
||||
|
||||
// parse source addr
|
||||
struct json_object *jobj_source_addr;
|
||||
if (!json_object_object_get_ex(jobj_msg, SOURCE_ADDR, &jobj_source_addr)) {
|
||||
PRINT_ERR("failed to parse source_addr\n");
|
||||
return;
|
||||
}
|
||||
|
||||
// parse dest addr
|
||||
struct json_object *jobj_dest_addr;
|
||||
if (!json_object_object_get_ex(jobj_msg, DEST_ADDR, &jobj_dest_addr)) {
|
||||
PRINT_ERR("failed to parse dest_addr\n");
|
||||
return;
|
||||
}
|
||||
const char *dest_addr = json_object_get_string(jobj_dest_addr);
|
||||
|
||||
|
||||
// parse msg data
|
||||
struct json_object *jobj_data;
|
||||
if (!json_object_object_get_ex(jobj_msg, DATA, &jobj_data)) {
|
||||
PRINT_ERR("failed to parse data\n");
|
||||
return;
|
||||
}
|
||||
|
||||
//create outgoing message
|
||||
struct json_object *jobj_outmsg = json_object_new_object();
|
||||
if (jobj_outmsg == NULL) {
|
||||
PRINT_ERR("failed to allocate json object for jobj_outmsg\n");
|
||||
return;
|
||||
}
|
||||
|
||||
json_object_object_add(jobj_outmsg, DATA, jobj_data);
|
||||
json_object_object_add(jobj_outmsg, VERSION, json_object_new_int(CUR_VERSION));
|
||||
json_object_object_add(jobj_outmsg, SOURCE_ADDR, jobj_source_addr);
|
||||
|
||||
const char *outmsg = json_object_to_json_string_ext(jobj_outmsg, JSON_C_TO_STRING_PLAIN);
|
||||
|
||||
// Set up destination address
|
||||
memset(&cliaddr, 0, sizeof(struct sockaddr_un));
|
||||
cliaddr.sun_family = AF_UNIX;
|
||||
cliaddr.sun_path[0] = '\0';
|
||||
strncpy(cliaddr.sun_path+1, dest_addr, strlen(dest_addr));
|
||||
addrlen = sizeof(sa_family_t) + strlen(dest_addr) + 1;
|
||||
|
||||
// Send the message to the client.
|
||||
// This will get transparently restarted if interrupted by signal.
|
||||
ssize_t outlen = strlen(outmsg);
|
||||
rc = sendto(app_fd, outmsg, outlen, 0, (struct sockaddr *) &cliaddr,
|
||||
addrlen);
|
||||
if (rc == -1) {
|
||||
PRINT_ERR("unable to send msg to %.*s: %m\n", UNIX_ADDR_LEN, cliaddr.sun_path+1);
|
||||
} else if (rc != outlen) {
|
||||
PRINT_ERR("sendto didn't send the whole message\n");
|
||||
}
|
||||
|
||||
json_object_put(jobj_outmsg);
|
||||
}
|
||||
|
||||
void handle_app_msg(const char *msg, struct sockaddr_un *cliaddr,
|
||||
socklen_t cliaddrlen)
|
||||
{
|
||||
int rc;
|
||||
char *app_addr;
|
||||
|
||||
//parse incoming msg
|
||||
struct json_object *jobj_msg = json_tokener_parse(msg);
|
||||
if (jobj_msg == NULL) {
|
||||
PRINT_ERR("failed to parse msg\n");
|
||||
return;
|
||||
}
|
||||
|
||||
// parse version
|
||||
struct json_object *jobj_version;
|
||||
if (!json_object_object_get_ex(jobj_msg, VERSION, &jobj_version)) {
|
||||
PRINT_ERR("failed to parse version\n");
|
||||
goto done;
|
||||
}
|
||||
int version = json_object_get_int(jobj_version);
|
||||
|
||||
if (version != CUR_VERSION) {
|
||||
PRINT_ERR("message from app version %d, expected %d, dropping\n",
|
||||
version, CUR_VERSION);
|
||||
goto done;
|
||||
}
|
||||
|
||||
// parse dest instance
|
||||
struct json_object *jobj_dest_addr;
|
||||
if (!json_object_object_get_ex(jobj_msg, DEST_ADDR, &jobj_dest_addr)) {
|
||||
PRINT_ERR("failed to parse dest_address\n");
|
||||
goto done;
|
||||
}
|
||||
|
||||
// parse data
|
||||
struct json_object *jobj_data;
|
||||
if (!json_object_object_get_ex(jobj_msg, DATA, &jobj_data)) {
|
||||
PRINT_ERR("failed to parse data\n");
|
||||
goto done;
|
||||
}
|
||||
|
||||
if (cliaddr->sun_path[0] == '\0') {
|
||||
app_addr = cliaddr->sun_path+1;
|
||||
// get length without family or leading null from abstract namespace
|
||||
cliaddrlen = cliaddrlen - sizeof(sa_family_t) - 1;
|
||||
app_addr[cliaddrlen] = '\0';
|
||||
} else {
|
||||
PRINT_INFO("client address not in abstract namespace, dropping\n");
|
||||
goto done;
|
||||
}
|
||||
|
||||
struct json_object *jobj_outmsg = json_object_new_object();
|
||||
if (jobj_outmsg == NULL) {
|
||||
PRINT_ERR("failed to allocate json object for outmsg\n");
|
||||
goto done;
|
||||
}
|
||||
|
||||
json_object_object_add(jobj_outmsg, DATA, jobj_data);
|
||||
json_object_object_add(jobj_outmsg, VERSION, jobj_version);
|
||||
json_object_object_add(jobj_outmsg, DEST_ADDR, jobj_dest_addr);
|
||||
json_object_object_add(jobj_outmsg, SOURCE_ADDR, json_object_new_string(app_addr));
|
||||
|
||||
const char *outmsg = json_object_to_json_string_ext(jobj_outmsg, JSON_C_TO_STRING_PLAIN);
|
||||
|
||||
// use '\n' to delimit JSON string: mark the beginning
|
||||
rc = write(host_fd, "\n", 1);
|
||||
if (rc == -1) {
|
||||
PRINT_ERR("unable to send \\n \n");
|
||||
}
|
||||
|
||||
// send to host
|
||||
ssize_t outlen = strlen(outmsg);
|
||||
rc = write(host_fd, outmsg, outlen);
|
||||
if (rc == -1) {
|
||||
PRINT_ERR("unable to send msg from %.*s: %m\n", UNIX_ADDR_LEN, app_addr);
|
||||
} else if (rc != outlen) {
|
||||
PRINT_ERR("write didn't write the whole message to host\n");
|
||||
}
|
||||
|
||||
// use '\n' to delimit JSON string: mark the ending
|
||||
rc = write(host_fd, "\n", 1);
|
||||
if (rc == -1) {
|
||||
PRINT_ERR("unable to send \\n \n");
|
||||
}
|
||||
|
||||
json_object_put(jobj_outmsg);
|
||||
done:
|
||||
json_object_put(jobj_msg);
|
||||
}
|
||||
|
||||
|
||||
void unmask_sigio(void)
|
||||
{
|
||||
sigset_t mask;
|
||||
sigemptyset (&mask);
|
||||
sigaddset (&mask, SIGIO);
|
||||
sigprocmask(SIG_UNBLOCK, &mask, 0);
|
||||
}
|
||||
|
||||
void mask_sigio(void)
|
||||
{
|
||||
sigset_t mask;
|
||||
sigemptyset (&mask);
|
||||
sigaddset (&mask, SIGIO);
|
||||
sigprocmask(SIG_BLOCK, &mask, 0);
|
||||
}
|
||||
|
||||
void handle_host_conn_down()
|
||||
{
|
||||
check_host_connection = 0;
|
||||
unmask_sigio();
|
||||
}
|
||||
|
||||
void scan_host_fd(struct pollfd *pfd)
|
||||
{
|
||||
char buf[10000];
|
||||
ssize_t rc;
|
||||
|
||||
if (pfd->revents & POLLIN) {
|
||||
// Read all messages from the host device
|
||||
while(1) {
|
||||
rc = read(pfd->fd, buf, sizeof(buf));
|
||||
if (rc == 0) {
|
||||
// Connection to host has gone down
|
||||
handle_host_conn_down();
|
||||
return;
|
||||
} else if (rc < 0) {
|
||||
if (errno == EAGAIN)
|
||||
// We've read all the messages
|
||||
return;
|
||||
else {
|
||||
PRINT_ERR("read from host: %m");
|
||||
return;
|
||||
}
|
||||
}
|
||||
handle_virtio_serial_msg(buf, rc, pfd->fd, tok);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void scan_app_fd(struct pollfd *pfd)
|
||||
{
|
||||
char buf[10000];
|
||||
struct sockaddr_un cliaddr;
|
||||
ssize_t rc;
|
||||
|
||||
// Read all messages from the app socket
|
||||
if (pfd->revents & POLLIN) {
|
||||
while(1) {
|
||||
socklen_t addrlen = sizeof(struct sockaddr_un);
|
||||
rc = recvfrom(pfd->fd, buf, sizeof(buf), 0,
|
||||
(struct sockaddr *) &cliaddr, &addrlen);
|
||||
if (rc < 0) {
|
||||
if (errno == EAGAIN)
|
||||
// We've read all the messages
|
||||
return;
|
||||
else {
|
||||
PRINT_ERR("recvfrom from app: %m");
|
||||
return;
|
||||
}
|
||||
}
|
||||
handle_app_msg(buf, &cliaddr, addrlen);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
//we get a SIGIO if the host connection connects/disconnects
|
||||
static void sigio_handler(int signal)
|
||||
{
|
||||
struct pollfd pfd;
|
||||
pfd.fd = host_fd;
|
||||
pfd.events = POLLIN;
|
||||
poll(&pfd, 1, 0);
|
||||
|
||||
// if host is not connected, just exit
|
||||
if (pfd.revents & POLLHUP)
|
||||
return;
|
||||
|
||||
// host is connected so check it in main loop
|
||||
check_host_connection = 1;
|
||||
initial_connection = 1;
|
||||
}
|
||||
|
||||
//dump stack trace on segfault
|
||||
static void segv_handler(int signum)
|
||||
{
|
||||
int count;
|
||||
void *syms[100];
|
||||
int fd = open("/var/log/guest_agent_backtrace.log", O_RDWR|O_APPEND|O_CREAT, S_IRWXU);
|
||||
if (fd == -1) {
|
||||
PRINT_ERR("Unable to open guest agent backtrace file: %m");
|
||||
goto out;
|
||||
}
|
||||
|
||||
write(fd, "\n", 1);
|
||||
count = backtrace(syms, 100);
|
||||
if (count == 0) {
|
||||
char *log = "Got zero items in backtrace.\n";
|
||||
write(fd, log, strlen(log));
|
||||
goto out;
|
||||
}
|
||||
|
||||
backtrace_symbols_fd(syms, count, fd);
|
||||
out:
|
||||
fflush(NULL);
|
||||
exit(-1);
|
||||
}
|
||||
|
||||
int main(int argc, char **argv)
|
||||
{
|
||||
int flags;
|
||||
int rc;
|
||||
struct sockaddr_un svaddr;
|
||||
int addrlen;
|
||||
|
||||
PRINT_INFO("%s starting up\n", *argv);
|
||||
|
||||
// optional arg for log level. Higher number means more logs
|
||||
if (argc > 1) {
|
||||
char *endptr, *str;
|
||||
long val;
|
||||
str = argv[1];
|
||||
errno = 0;
|
||||
val = strtol(str, &endptr, 0);
|
||||
|
||||
if ((errno == ERANGE && (val == LONG_MAX || val == LONG_MIN))
|
||||
|| (errno != 0 && val == 0)) {
|
||||
PRINT_ERR("error parsing log level arg: strtol: %m");
|
||||
exit(-1);
|
||||
}
|
||||
|
||||
if (endptr == str) {
|
||||
PRINT_ERR("No digits were found\n");
|
||||
exit(EXIT_FAILURE);
|
||||
}
|
||||
|
||||
if (val > LOG_DEBUG)
|
||||
val = LOG_DEBUG;
|
||||
|
||||
setlogmask(LOG_UPTO(val));
|
||||
} else
|
||||
setlogmask(LOG_UPTO(LOG_WARNING));
|
||||
|
||||
signal(SIGIO, sigio_handler);
|
||||
signal(SIGSEGV, segv_handler);
|
||||
|
||||
// set up fd for talking to host
|
||||
host_fd = open("/dev/virtio-ports/cgcs.messaging", O_RDWR|O_NONBLOCK);
|
||||
if (host_fd == -1) {
|
||||
PRINT_ERR("problem with open: %m");
|
||||
exit(-1);
|
||||
}
|
||||
|
||||
flags = fcntl(host_fd, F_GETFL);
|
||||
rc = fcntl(host_fd, F_SETFL, flags | O_ASYNC);
|
||||
if (rc == -1) {
|
||||
PRINT_ERR("problem setting host_fd async: %m");
|
||||
exit(-1);
|
||||
}
|
||||
|
||||
rc = fcntl(host_fd, F_SETOWN, getpid());
|
||||
if (rc == -1) {
|
||||
PRINT_ERR("problem owning host_fd: %m");
|
||||
exit(-1);
|
||||
}
|
||||
|
||||
// set up socket for talking to apps
|
||||
app_fd = socket(AF_UNIX, SOCK_DGRAM, 0);
|
||||
if (app_fd == -1) {
|
||||
PRINT_ERR("problem with socket: %m");
|
||||
exit(-1);
|
||||
}
|
||||
|
||||
flags = fcntl(app_fd, F_GETFL, 0);
|
||||
fcntl(app_fd, F_SETFL, flags | O_NONBLOCK);
|
||||
|
||||
memset(&svaddr, 0, sizeof(struct sockaddr_un));
|
||||
svaddr.sun_family = AF_UNIX;
|
||||
svaddr.sun_path[0] = '\0';
|
||||
strncpy(svaddr.sun_path+1, AGENT_ADDR, sizeof(svaddr.sun_path) - 2);
|
||||
|
||||
addrlen = sizeof(sa_family_t) + strlen(AGENT_ADDR) + 1;
|
||||
if (bind(app_fd, (struct sockaddr *) &svaddr, addrlen) == -1) {
|
||||
PRINT_ERR("problem with bind: %m");
|
||||
exit(-1);
|
||||
}
|
||||
|
||||
tok = json_tokener_new();
|
||||
|
||||
while(1) {
|
||||
struct pollfd pollfds[MAX_FDS_GUEST];
|
||||
int i;
|
||||
int nfds = 0;
|
||||
|
||||
if (check_host_connection) {
|
||||
// we think the host connection is up
|
||||
|
||||
if (initial_connection) {
|
||||
//mask SIGIO if we haven't already
|
||||
mask_sigio();
|
||||
initial_connection=0;
|
||||
}
|
||||
|
||||
pollfds[nfds].fd = host_fd;
|
||||
pollfds[nfds].events = POLLIN;
|
||||
nfds++;
|
||||
|
||||
}
|
||||
|
||||
pollfds[nfds].fd = app_fd;
|
||||
pollfds[nfds].events = POLLIN;
|
||||
nfds++;
|
||||
|
||||
if (nfds > 0) {
|
||||
rc = poll(pollfds, nfds, -1);
|
||||
|
||||
if (rc == -1) {
|
||||
if (errno == EINTR)
|
||||
continue;
|
||||
PRINT_ERR("problem with poll: %m");
|
||||
free(tok);
|
||||
exit(-1);
|
||||
}
|
||||
|
||||
for(i=0;i<nfds;i++) {
|
||||
if (pollfds[i].fd == host_fd)
|
||||
scan_host_fd(pollfds+i);
|
||||
if (pollfds[i].fd == app_fd)
|
||||
scan_app_fd(pollfds+i);
|
||||
}
|
||||
} else
|
||||
// no connected fds, just wait for SIGIO
|
||||
pause();
|
||||
}
|
||||
|
||||
free(tok);
|
||||
|
||||
return 0;
|
||||
}
|
@ -1,95 +0,0 @@
|
||||
/*
|
||||
* Copyright (c) 2013-2016, Wind River Systems, Inc.
|
||||
*
|
||||
* 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 above copyright notice,
|
||||
* this list of conditions and the following disclaimer.
|
||||
*
|
||||
* 2) Redistributions in binary form must reproduce the above copyright notice,
|
||||
* this list of conditions and the following disclaimer in the documentation and/or
|
||||
* other materials provided with the distribution.
|
||||
*
|
||||
* 3) Neither the name of Wind River Systems nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software without specific
|
||||
* prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER OR CONTRIBUTORS 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.
|
||||
*/
|
||||
|
||||
#ifndef GUESTHOST_MSG_H
|
||||
#define GUESTHOST_MSG_H
|
||||
|
||||
/* This implements a library for generic guest-host messaging.
|
||||
*
|
||||
* This handles some of the boilerplate code that would be common to
|
||||
* all applications using the generic guest/host communications. That way
|
||||
* any changes can be made in a single place.
|
||||
*
|
||||
* This should be threadsafe as long as multiple threads don't try to
|
||||
* simultaneously process incoming messages using the same gh_info_t pointer.
|
||||
*
|
||||
*/
|
||||
|
||||
#include <sys/un.h>
|
||||
#include <json-c/json.h>
|
||||
|
||||
/* Function signature for the guest-host messaging callback function.
|
||||
* source_addr is a null-terminated string representing the host source address.
|
||||
* The message contents are up to the sender of the message.
|
||||
*/
|
||||
|
||||
typedef void (*gh_msg_handler_t)(const char *source_addr, struct json_object *jobj_msg);
|
||||
|
||||
#define GH_ERRORSIZE 400
|
||||
typedef struct {
|
||||
int sock; // socket for talking to guest agent
|
||||
struct sockaddr_un svaddr; // address of guest agent
|
||||
int svaddrlen; // length of guest agent address
|
||||
char errorbuf[GH_ERRORSIZE];
|
||||
gh_msg_handler_t gh_msg_handler;
|
||||
} gh_info_t;
|
||||
|
||||
|
||||
|
||||
/* Allocate socket, set up callbacks, etc. This must be called once before
|
||||
* any other API calls. "addr" is a null-terminated string of 16 chars or less
|
||||
* (including the null) that is unique within this guest. "info" is the address
|
||||
* of a value-result pointer that will be updated during the call.
|
||||
*
|
||||
* On success returns a socket and "info" is updated to point to an allocated chunk of memory.
|
||||
* On error will return -1. If it was unable to allocate memory then "info" will be
|
||||
* NULL. If it was able to allocate memory but something else failed then "info" will
|
||||
* be non-NULL and you can call gh_get_error() to get an error message.
|
||||
*/
|
||||
int gh_init(gh_msg_handler_t msg_handler, char *addr, gh_info_t **info);
|
||||
|
||||
/* This should be called when the socket becomes readable. This may result in
|
||||
* callbacks being called. Returns 0 on success.
|
||||
* A negative return value indicates an error of some kind.
|
||||
*/
|
||||
int gh_process_msg(gh_info_t *info);
|
||||
|
||||
/* Send a message to an address on the host.
|
||||
* Returns 0 on success.
|
||||
* A negative return value indicates an error of some kind.
|
||||
* The message must be a null-terminated string without embedded newlines.
|
||||
*/
|
||||
int gh_send_msg(gh_info_t *info, const char *dest_addr, const char *msg);
|
||||
|
||||
/* Get error message from most recent library call that returned an error. */
|
||||
char *gh_get_error(gh_info_t *info);
|
||||
|
||||
|
||||
|
||||
#endif
|
@ -1,461 +0,0 @@
|
||||
/*
|
||||
* Copyright (c) 2013-2016, Wind River Systems, Inc.
|
||||
*
|
||||
* 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 above copyright notice,
|
||||
* this list of conditions and the following disclaimer.
|
||||
*
|
||||
* 2) Redistributions in binary form must reproduce the above copyright notice,
|
||||
* this list of conditions and the following disclaimer in the documentation and/or
|
||||
* other materials provided with the distribution.
|
||||
*
|
||||
* 3) Neither the name of Wind River Systems nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software without specific
|
||||
* prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER OR CONTRIBUTORS 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.
|
||||
*/
|
||||
|
||||
/*
|
||||
This is a backchannel messaging agent that will run on the host in order to
|
||||
pass messages between the host and the guest.
|
||||
|
||||
When a new instance appears (detected by a new unix socket of the specified
|
||||
format being added to the watched directory) we open a unix stream socket
|
||||
and connect to the instance, storing the mapping from instance to socket.
|
||||
|
||||
When an instance dies we will close the socket and remove the mapping.
|
||||
|
||||
We will monitor the connections to the instances as well as a unix datagram
|
||||
socket used to communicate with other apps on the host. Messages coming
|
||||
from an instance will be forwarded to the appropriate app, and vice versa.
|
||||
|
||||
If we try to send a message to a guest socket that has nothing listening
|
||||
within the guest, by default the message will get queued up without giving
|
||||
us any indication that there is no listener. These messages can get bundled
|
||||
together when they get delivered to the guest.
|
||||
*/
|
||||
|
||||
|
||||
#include <sys/stat.h>
|
||||
#include <sys/types.h>
|
||||
#include <sys/socket.h>
|
||||
#include <stdio.h>
|
||||
#include <errno.h>
|
||||
#include <stdlib.h>
|
||||
#include <linux/un.h>
|
||||
#include <fcntl.h>
|
||||
#include <string.h>
|
||||
#include <stddef.h>
|
||||
#include <sys/time.h>
|
||||
#include <signal.h>
|
||||
#include <unistd.h>
|
||||
#include <poll.h>
|
||||
#include <limits.h>
|
||||
#include <syslog.h>
|
||||
#include <execinfo.h>
|
||||
#include <json-c/json.h>
|
||||
|
||||
#include "misc.h"
|
||||
#include "host_guest_msg_type.h"
|
||||
#include "host_instance_mgmt.h"
|
||||
|
||||
int app_fd;
|
||||
|
||||
// One tokener for each instance connection serve as reassembly buffer
|
||||
struct json_tokener* tok[MAX_FDS_HOST];
|
||||
|
||||
#define SERVER_SOCKET_FORMAT \
|
||||
"/var/lib/libvirt/qemu/cgcs.messaging.%s.sock"
|
||||
|
||||
// Message has arrived from the guest.
|
||||
// This assumes the message has been validated
|
||||
void process_msg(json_object *jobj_msg, int fd)
|
||||
{
|
||||
int rc;
|
||||
struct sockaddr_un cliaddr;
|
||||
char *name;
|
||||
int addrlen;
|
||||
|
||||
name = instance_name_by_fd(fd);
|
||||
if (!name) {
|
||||
PRINT_ERR("whoops, can't get instance name from fd, dropping\n");
|
||||
return;
|
||||
}
|
||||
|
||||
// parse version
|
||||
struct json_object *jobj_version;
|
||||
if (!json_object_object_get_ex(jobj_msg, VERSION, &jobj_version)) {
|
||||
PRINT_ERR("failed to parse version\n");
|
||||
return;
|
||||
}
|
||||
int version = json_object_get_int(jobj_version);
|
||||
if (version != CUR_VERSION) {
|
||||
PRINT_ERR("received version %d, expected %d\n", version, CUR_VERSION);
|
||||
return;
|
||||
}
|
||||
|
||||
// parse source addr
|
||||
struct json_object *jobj_source_addr;
|
||||
if (!json_object_object_get_ex(jobj_msg, SOURCE_ADDR, &jobj_source_addr)) {
|
||||
PRINT_ERR("failed to parse source_addr\n");
|
||||
return;
|
||||
}
|
||||
|
||||
// parse dest addr
|
||||
struct json_object *jobj_dest_addr;
|
||||
if (!json_object_object_get_ex(jobj_msg, DEST_ADDR, &jobj_dest_addr)) {
|
||||
PRINT_ERR("failed to parse dest_addr\n");
|
||||
return;
|
||||
}
|
||||
const char *dest_addr = json_object_get_string(jobj_dest_addr);
|
||||
|
||||
// parse data. data is a json object that is nested inside the msg
|
||||
struct json_object *jobj_data;
|
||||
if (!json_object_object_get_ex(jobj_msg, DATA, &jobj_data)) {
|
||||
PRINT_ERR("failed to parse data\n");
|
||||
return;
|
||||
}
|
||||
|
||||
//create outgoing message
|
||||
struct json_object *jobj_outmsg = json_object_new_object();
|
||||
if (jobj_outmsg == NULL) {
|
||||
PRINT_ERR("failed to allocate json object for jobj_outmsg\n");
|
||||
return;
|
||||
}
|
||||
|
||||
json_object_object_add(jobj_outmsg, DATA, jobj_data);
|
||||
json_object_object_add(jobj_outmsg, VERSION, json_object_new_int(CUR_VERSION));
|
||||
json_object_object_add(jobj_outmsg, SOURCE_ADDR, jobj_source_addr);
|
||||
json_object_object_add(jobj_outmsg, SOURCE_INSTANCE, json_object_new_string(name));
|
||||
|
||||
const char *outmsg = json_object_to_json_string_ext(jobj_outmsg, JSON_C_TO_STRING_PLAIN);
|
||||
ssize_t outlen = strlen(outmsg);
|
||||
|
||||
// Set up destination address
|
||||
memset(&cliaddr, 0, sizeof(struct sockaddr_un));
|
||||
cliaddr.sun_family = AF_UNIX;
|
||||
cliaddr.sun_path[0] = '\0';
|
||||
strncpy(cliaddr.sun_path+1, dest_addr, strlen(dest_addr));
|
||||
addrlen = sizeof(sa_family_t) + strlen(dest_addr) + 1;
|
||||
|
||||
// Send the message to the client.
|
||||
// This will get transparently restarted if interrupted by signal.
|
||||
rc = sendto(app_fd, outmsg, outlen, 0, (struct sockaddr *) &cliaddr,
|
||||
addrlen);
|
||||
if (rc == -1) {
|
||||
PRINT_ERR("unable to send msg to client %.*s: %m\n", UNIX_ADDR_LEN,
|
||||
cliaddr.sun_path+1);
|
||||
} else if (rc != outlen) {
|
||||
PRINT_ERR("sendto didn't send the whole message to client\n");
|
||||
}
|
||||
json_object_put(jobj_outmsg);
|
||||
}
|
||||
|
||||
// Read and process all messages from the guest. If the guest dies, tear
|
||||
// down the connection.
|
||||
void scan_guest_fd(struct pollfd *pfd)
|
||||
{
|
||||
char buf[10000];
|
||||
ssize_t rc;
|
||||
|
||||
if (pfd->revents & POLLHUP) {
|
||||
// The only known cause of this is the death of the qemu process.
|
||||
// Tear everything down.
|
||||
disconnect_guest(pfd->fd);
|
||||
} else if (pfd->revents & POLLIN) {
|
||||
// Read a message from the guest socket.
|
||||
// We assume that all the data arrives in one packet.
|
||||
// To handle arbitrary messages sizes we should receive into a buffer
|
||||
// with knowledge of message length, etc. Can extend later if needed.
|
||||
rc = read(pfd->fd, buf, sizeof(buf));
|
||||
if (rc == 0) {
|
||||
PRINT_INFO("got read of 0 bytes on guest fd\n");
|
||||
return;
|
||||
} else if (rc < 0) {
|
||||
if (errno == EAGAIN)
|
||||
// Odd, should have been a message
|
||||
return;
|
||||
else {
|
||||
PRINT_ERR("read from guest: %m");
|
||||
return;
|
||||
}
|
||||
}
|
||||
handle_virtio_serial_msg(buf, rc, pfd->fd, tok[pfd->fd]);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
// validate header and send message to specified guest
|
||||
void handle_app_msg(const char *msg, struct sockaddr_un *cliaddr,
|
||||
socklen_t cliaddrlen)
|
||||
{
|
||||
int rc;
|
||||
char *app_addr;
|
||||
int sock;
|
||||
|
||||
//parse incoming msg
|
||||
struct json_object *jobj_msg = json_tokener_parse(msg);
|
||||
if (jobj_msg == NULL) {
|
||||
PRINT_ERR("failed to parse msg\n");
|
||||
return;
|
||||
}
|
||||
|
||||
// parse version
|
||||
struct json_object *jobj_version;
|
||||
int version;
|
||||
if (!json_object_object_get_ex(jobj_msg, VERSION, &jobj_version)) {
|
||||
PRINT_ERR("failed to parse version\n");
|
||||
goto done;
|
||||
}
|
||||
version = json_object_get_int(jobj_version);
|
||||
|
||||
if (version != CUR_VERSION) {
|
||||
PRINT_ERR("message from app version %d, expected %d, dropping\n",
|
||||
version, CUR_VERSION);
|
||||
goto done;
|
||||
}
|
||||
|
||||
// parse dest addr
|
||||
struct json_object *jobj_dest_addr;
|
||||
if (!json_object_object_get_ex(jobj_msg, DEST_ADDR, &jobj_dest_addr)) {
|
||||
PRINT_ERR("failed to parse dest_address\n");
|
||||
goto done;
|
||||
}
|
||||
|
||||
// parse dest instance
|
||||
struct json_object *jobj_dest_instance;
|
||||
if (!json_object_object_get_ex(jobj_msg, DEST_INSTANCE, &jobj_dest_instance)) {
|
||||
PRINT_ERR("failed to parse dest_instance\n");
|
||||
goto done;
|
||||
}
|
||||
const char *dest_instance = json_object_get_string(jobj_dest_instance);
|
||||
|
||||
// parse data
|
||||
struct json_object *jobj_data;
|
||||
if (!json_object_object_get_ex(jobj_msg, DATA, &jobj_data)) {
|
||||
PRINT_ERR("failed to parse data\n");
|
||||
goto done;
|
||||
}
|
||||
|
||||
if (cliaddr->sun_path[0] == '\0') {
|
||||
app_addr = cliaddr->sun_path+1;
|
||||
// get length without family or leading null from abstract namespace
|
||||
cliaddrlen = cliaddrlen - sizeof(sa_family_t) - 1;
|
||||
app_addr[cliaddrlen] = '\0';
|
||||
} else {
|
||||
PRINT_INFO("client address not in abstract namespace, dropping\n");
|
||||
goto done;
|
||||
}
|
||||
|
||||
// look up the guest socket based on the instance name
|
||||
sock = fd_find_by_instance_name((char *)dest_instance);
|
||||
if (sock == -1) {
|
||||
PRINT_INFO("unable to find instance connection socket for %.20s\n",
|
||||
dest_instance);
|
||||
goto done;
|
||||
}
|
||||
|
||||
|
||||
struct json_object *jobj_outmsg = json_object_new_object();
|
||||
if (jobj_outmsg == NULL) {
|
||||
PRINT_ERR("failed to allocate json object for outmsg\n");
|
||||
goto done;
|
||||
}
|
||||
|
||||
json_object_object_add(jobj_outmsg, DATA, jobj_data);
|
||||
json_object_object_add(jobj_outmsg, VERSION, jobj_version);
|
||||
json_object_object_add(jobj_outmsg, DEST_ADDR, jobj_dest_addr);
|
||||
json_object_object_add(jobj_outmsg, SOURCE_ADDR, json_object_new_string(app_addr));
|
||||
|
||||
const char *outmsg = json_object_to_json_string_ext(jobj_outmsg, JSON_C_TO_STRING_PLAIN);
|
||||
|
||||
// send to guest
|
||||
ssize_t outlen = strlen(outmsg);
|
||||
rc = send(sock, outmsg, outlen, 0);
|
||||
if (rc == -1) {
|
||||
PRINT_ERR("unable to send msg from %.*s: %m\n", UNIX_ADDR_LEN, app_addr);
|
||||
} else if (rc != outlen) {
|
||||
PRINT_ERR("write didn't write the whole message\n");
|
||||
}
|
||||
|
||||
// use '\n' to delimit JSON string
|
||||
rc = send(sock, "\n", 1, 0);
|
||||
if (rc == -1) {
|
||||
PRINT_ERR("unable to send \\n \n");
|
||||
}
|
||||
|
||||
json_object_put(jobj_outmsg);
|
||||
|
||||
done:
|
||||
json_object_put(jobj_msg);
|
||||
}
|
||||
|
||||
// Read and process a message from the application socket
|
||||
void scan_app_fd()
|
||||
{
|
||||
char buf[10000];
|
||||
struct sockaddr_un cliaddr;
|
||||
ssize_t rc;
|
||||
|
||||
// Process a message from the app socket
|
||||
socklen_t addrlen = sizeof(struct sockaddr_un);
|
||||
rc = recvfrom(app_fd, buf, sizeof(buf), 0,
|
||||
(struct sockaddr *) &cliaddr, &addrlen);
|
||||
if (rc < 0) {
|
||||
if (errno == EAGAIN)
|
||||
// Odd, should have been a message
|
||||
return;
|
||||
else {
|
||||
PRINT_ERR("error in recvfrom from app: %m");
|
||||
return;
|
||||
}
|
||||
}
|
||||
handle_app_msg(buf, &cliaddr, addrlen);
|
||||
}
|
||||
|
||||
//dump stack trace on segfault
|
||||
static void segv_handler(int signum)
|
||||
{
|
||||
int count;
|
||||
void *syms[100];
|
||||
int fd = open("/var/log/host_agent_backtrace.log", O_RDWR|O_APPEND|O_CREAT, S_IRWXU);
|
||||
if (fd == -1) {
|
||||
PRINT_ERR("Unable to open host agent backtrace file: %m");
|
||||
goto out;
|
||||
}
|
||||
|
||||
write(fd, "\n", 1);
|
||||
count = backtrace(syms, 100);
|
||||
if (count == 0) {
|
||||
char *log = "Got zero items in backtrace.\n";
|
||||
write(fd, log, strlen(log));
|
||||
goto out;
|
||||
}
|
||||
|
||||
backtrace_symbols_fd(syms, count, fd);
|
||||
out:
|
||||
fflush(NULL);
|
||||
exit(-1);
|
||||
}
|
||||
|
||||
void free_tok()
|
||||
{
|
||||
int i;
|
||||
for (i=0; i<MAX_FDS_HOST; i++) {
|
||||
free(tok[i]);
|
||||
}
|
||||
}
|
||||
|
||||
int main(int argc, char **argv)
|
||||
{
|
||||
struct sockaddr_un svaddr;
|
||||
int rc;
|
||||
int flags;
|
||||
int addrlen;
|
||||
|
||||
PRINT_INFO("%s starting up\n", *argv);
|
||||
|
||||
// optional arg for log level. Higher number means more logs
|
||||
if (argc > 1) {
|
||||
char *endptr, *str;
|
||||
long val;
|
||||
str = argv[1];
|
||||
errno = 0;
|
||||
val = strtol(str, &endptr, 0);
|
||||
|
||||
if ((errno == ERANGE && (val == LONG_MAX || val == LONG_MIN))
|
||||
|| (errno != 0 && val == 0)) {
|
||||
PRINT_ERR("error parsing log level arg: strtol: %m");
|
||||
exit(-1);
|
||||
}
|
||||
|
||||
if (endptr == str) {
|
||||
PRINT_ERR("No digits were found\n");
|
||||
exit(EXIT_FAILURE);
|
||||
}
|
||||
|
||||
if (val > LOG_DEBUG)
|
||||
val = LOG_DEBUG;
|
||||
|
||||
setlogmask(LOG_UPTO(val));
|
||||
} else
|
||||
setlogmask(LOG_UPTO(LOG_WARNING));
|
||||
|
||||
signal(SIGSEGV, segv_handler);
|
||||
|
||||
// set up socket for talking to apps
|
||||
app_fd = socket(AF_UNIX, SOCK_DGRAM, 0);
|
||||
if (app_fd == -1) {
|
||||
PRINT_ERR("problem with socket: %m");
|
||||
exit(-1);
|
||||
}
|
||||
|
||||
flags = fcntl(app_fd, F_GETFL, 0);
|
||||
fcntl(app_fd, F_SETFL, flags | O_NONBLOCK);
|
||||
|
||||
memset(&svaddr, 0, sizeof(struct sockaddr_un));
|
||||
svaddr.sun_family = AF_UNIX;
|
||||
svaddr.sun_path[0] = '\0';
|
||||
strncpy(svaddr.sun_path+1, AGENT_ADDR, sizeof(svaddr.sun_path) - 2);
|
||||
|
||||
addrlen = sizeof(sa_family_t) + strlen(AGENT_ADDR) + 1;
|
||||
if (bind(app_fd, (struct sockaddr *) &svaddr, addrlen) == -1) {
|
||||
PRINT_ERR("problem with bind to agent addr: %m");
|
||||
exit(-1);
|
||||
}
|
||||
|
||||
pollfd_add(app_fd, POLLIN);
|
||||
|
||||
// This will set up monitoring for new/deleted instances
|
||||
// and will set up connections for existing instances.
|
||||
if (server_scan_init() < 0)
|
||||
return -1;
|
||||
|
||||
int i;
|
||||
for (i=0; i<MAX_FDS_HOST; i++) {
|
||||
tok[i] = json_tokener_new();
|
||||
}
|
||||
|
||||
while(1) {
|
||||
int i;
|
||||
|
||||
// The timeout is for processing delayed connection retries.
|
||||
rc = poll(pollfds, nfds, next_connection_retry_interval());
|
||||
|
||||
if (rc == -1) {
|
||||
if (errno == EINTR)
|
||||
continue;
|
||||
PRINT_ERR("problem with poll: %m");
|
||||
free_tok();
|
||||
exit(-1);
|
||||
}
|
||||
|
||||
// With poll() we can't tell if we timed out without actually checking
|
||||
// the time, so run this unconditionally.
|
||||
process_connection_retries();
|
||||
|
||||
for(i=0;i<nfds;i++) {
|
||||
if ((pollfds[i].fd == app_fd) && (pollfds[i].revents & POLLIN))
|
||||
scan_app_fd();
|
||||
else if ((pollfds[i].fd == inotify_fd) && (pollfds[i].revents & POLLIN))
|
||||
handle_inotify_event();
|
||||
else
|
||||
scan_guest_fd(pollfds+i);
|
||||
}
|
||||
}
|
||||
|
||||
free_tok();
|
||||
return 0;
|
||||
}
|
@ -1,124 +0,0 @@
|
||||
/*
|
||||
* Copyright (c) 2013-2016, Wind River Systems, Inc.
|
||||
*
|
||||
* 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 above copyright notice,
|
||||
* this list of conditions and the following disclaimer.
|
||||
*
|
||||
* 2) Redistributions in binary form must reproduce the above copyright notice,
|
||||
* this list of conditions and the following disclaimer in the documentation and/or
|
||||
* other materials provided with the distribution.
|
||||
*
|
||||
* 3) Neither the name of Wind River Systems nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software without specific
|
||||
* prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER OR CONTRIBUTORS 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.
|
||||
*/
|
||||
|
||||
/**
|
||||
*/
|
||||
|
||||
#define _GNU_SOURCE /* for memmem() */
|
||||
|
||||
#include <stddef.h>
|
||||
#include <errno.h>
|
||||
#include <error.h>
|
||||
#include <fcntl.h>
|
||||
#include <poll.h>
|
||||
#include <pthread.h>
|
||||
#include <stdbool.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <stdint.h>
|
||||
#include <string.h>
|
||||
#include <unistd.h>
|
||||
#include <sys/stat.h>
|
||||
#include <sys/types.h>
|
||||
#include <sys/wait.h>
|
||||
#include <sys/select.h>
|
||||
#include <sys/un.h>
|
||||
#include <sys/socket.h>
|
||||
#include <json-c/json.h>
|
||||
|
||||
#include "host_guest_msg_type.h"
|
||||
|
||||
/*
|
||||
Multiple messages from the host can be bundled together into a single "read"
|
||||
so we need to check message boundaries and handle breaking the message apart.
|
||||
Assume a valid message does not contain newline '\n', and newline is added to
|
||||
the beginning and end of each message by the sender to delimit the boundaries.
|
||||
*/
|
||||
|
||||
void parser(void *buf, ssize_t len, int fd, json_tokener* tok, int newline_found)
|
||||
{
|
||||
json_object *jobj = json_tokener_parse_ex(tok, buf, len);
|
||||
enum json_tokener_error jerr = json_tokener_get_error(tok);
|
||||
|
||||
if (jerr == json_tokener_success) {
|
||||
process_msg(jobj, fd);
|
||||
json_object_put(jobj);
|
||||
return;
|
||||
}
|
||||
|
||||
else if (jerr == json_tokener_continue) {
|
||||
// partial JSON is parsed , continue to read from socket.
|
||||
if (newline_found) {
|
||||
// if newline was found in the middle of the buffer, the message
|
||||
// should be completed at this point. Throw out incomplete message
|
||||
// by resetting tokener.
|
||||
json_tokener_reset(tok);
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
// parsing error
|
||||
json_tokener_reset(tok);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void handle_virtio_serial_msg(void *buf, ssize_t len, int fd, json_tokener* tok)
|
||||
{
|
||||
void *newline;
|
||||
ssize_t len_head;
|
||||
|
||||
next:
|
||||
if (len == 0)
|
||||
return;
|
||||
|
||||
// search for newline as delimiter
|
||||
newline = memchr(buf, '\n', len);
|
||||
|
||||
if (newline) {
|
||||
// split buffer to head and tail at the location of newline.
|
||||
// feed the head to the parser and recursively process the tail.
|
||||
len_head = newline-buf;
|
||||
|
||||
// parse head
|
||||
if (len_head > 0)
|
||||
parser(buf, len_head, fd, tok, 1);
|
||||
|
||||
// start of the tail: skip newline
|
||||
buf += len_head+1;
|
||||
// length of the tail: deduct 1 for the newline character
|
||||
len -= len_head+1;
|
||||
|
||||
// continue to process the tail.
|
||||
goto next;
|
||||
}
|
||||
else {
|
||||
parser(buf, len, fd, tok, 0);
|
||||
}
|
||||
}
|
@ -1,96 +0,0 @@
|
||||
/*
|
||||
* Copyright (c) 2013-2016, Wind River Systems, Inc.
|
||||
*
|
||||
* 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 above copyright notice,
|
||||
* this list of conditions and the following disclaimer.
|
||||
*
|
||||
* 2) Redistributions in binary form must reproduce the above copyright notice,
|
||||
* this list of conditions and the following disclaimer in the documentation and/or
|
||||
* other materials provided with the distribution.
|
||||
*
|
||||
* 3) Neither the name of Wind River Systems nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software without specific
|
||||
* prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER OR CONTRIBUTORS 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.
|
||||
*/
|
||||
|
||||
#ifndef HOSTGUEST_MSG_H
|
||||
#define HOSTGUEST_MSG_H
|
||||
|
||||
/* This implements a library for generic guest-host messaging.
|
||||
*
|
||||
* This handles some of the boilerplate code that would be common to
|
||||
* all applications using the generic guest/host communications. That way
|
||||
* any changes can be made in a single place.
|
||||
*
|
||||
* This should be threadsafe as long as multiple threads don't try to
|
||||
* simultaneously process incoming messages using the same gh_info_t pointer.
|
||||
*
|
||||
*/
|
||||
|
||||
#include <sys/un.h>
|
||||
#include <json-c/json.h>
|
||||
|
||||
/* Function signature for the guest-host messaging callback function.
|
||||
* source_addr is a null-terminated string representing the host source address.
|
||||
* The message contents are entirely up to the sender of the message.
|
||||
*/
|
||||
typedef void (*hg_msg_handler_t)(const char *source_addr, const char *source_instance,
|
||||
struct json_object *jobj_msg);
|
||||
|
||||
#define HG_ERRORSIZE 400
|
||||
typedef struct {
|
||||
int sock; // socket for talking to guest agent
|
||||
struct sockaddr_un svaddr; // address of guest agent
|
||||
int svaddrlen; // length of guest agent address
|
||||
char errorbuf[HG_ERRORSIZE];
|
||||
hg_msg_handler_t hg_msg_handler;
|
||||
} hg_info_t;
|
||||
|
||||
|
||||
|
||||
/* Allocate socket, set up callbacks, etc. This must be called once before
|
||||
* any other API calls. "addr" is a null-terminated string of 16 chars or less
|
||||
* (including the null) that is unique within this guest. "info" is the address
|
||||
* of a value-result pointer that will be updated during the call.
|
||||
*
|
||||
* On success returns a socket and "info" is updated to point to an allocated chunk of memory.
|
||||
* On error will return -1. If it was unable to allocate memory then "info" will be
|
||||
* NULL. If it was able to allocate memory but something else failed then "info" will
|
||||
* be non-NULL and you can call hg_get_error() to get an error message.
|
||||
*/
|
||||
int hg_init(hg_msg_handler_t msg_handler, char *addr, hg_info_t **info);
|
||||
|
||||
/* This should be called when the socket becomes readable. This may result in
|
||||
* callbacks being called. Returns 0 on success.
|
||||
* A negative return value indicates an error of some kind.
|
||||
*/
|
||||
int hg_process_msg(hg_info_t *info);
|
||||
|
||||
/* Send a message to an address on the host.
|
||||
* Returns 0 on success.
|
||||
* A negative return value indicates an error of some kind.
|
||||
* The message must be a null-terminated string without embedded newlines.
|
||||
*/
|
||||
int hg_send_msg(hg_info_t *info, const char *dest_addr, const char *dest_instance,
|
||||
const char *msg);
|
||||
|
||||
/* Get error message from most recent library call that returned an error. */
|
||||
char *hg_get_error(hg_info_t *info);
|
||||
|
||||
|
||||
|
||||
#endif
|
@ -1,75 +0,0 @@
|
||||
/*
|
||||
* Copyright (c) 2013-2016, Wind River Systems, Inc.
|
||||
*
|
||||
* 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 above copyright notice,
|
||||
* this list of conditions and the following disclaimer.
|
||||
*
|
||||
* 2) Redistributions in binary form must reproduce the above copyright notice,
|
||||
* this list of conditions and the following disclaimer in the documentation and/or
|
||||
* other materials provided with the distribution.
|
||||
*
|
||||
* 3) Neither the name of Wind River Systems nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software without specific
|
||||
* prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER OR CONTRIBUTORS 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.
|
||||
*/
|
||||
|
||||
#ifndef HOST_GUEST_MSG_TYPE_H
|
||||
#define HOST_GUEST_MSG_TYPE_H
|
||||
|
||||
#include <stdint.h>
|
||||
#include <json-c/json.h>
|
||||
|
||||
#include "misc.h"
|
||||
|
||||
#define CUR_VERSION 2
|
||||
|
||||
// The server group message is JSON encoded null-terminated string without
|
||||
// embedded newlines.
|
||||
// keys for messages:
|
||||
#define VERSION "version"
|
||||
#define SOURCE_ADDR "source_addr"
|
||||
#define DEST_ADDR "dest_addr"
|
||||
#define SOURCE_INSTANCE "source_instance"
|
||||
#define DEST_INSTANCE "dest_instance"
|
||||
#define DATA "data"
|
||||
|
||||
// Used by the message reassembly code.
|
||||
// The underlying implementation uses page-size buffers
|
||||
#define HOST_GUEST_BUFSIZE 4096
|
||||
|
||||
#define MAX_INSTANCES 100
|
||||
#define MAX_FDS_HOST (MAX_INSTANCES+10)
|
||||
#define INSTANCE_NAME_SIZE 20
|
||||
|
||||
// unix socket abstract namespace address of both host and guest agent
|
||||
#define AGENT_ADDR "cgcs.messaging"
|
||||
|
||||
#define UNIX_ADDR_LEN 16
|
||||
|
||||
// Initialize connection message reassembly buffer
|
||||
void init_msgbuf(int fd);
|
||||
|
||||
/* Used to store partial host_guest messages */
|
||||
typedef struct {
|
||||
unsigned short len;
|
||||
char buf[HOST_GUEST_BUFSIZE];
|
||||
} msgbuf_t;
|
||||
|
||||
void handle_virtio_serial_msg(void *buf, ssize_t len, int fd, json_tokener* tok);
|
||||
void process_msg(json_object *jobj_msg, int fd);
|
||||
|
||||
#endif
|
@ -1,629 +0,0 @@
|
||||
/*
|
||||
* Copyright (c) 2013-2016, Wind River Systems, Inc.
|
||||
*
|
||||
* 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 above copyright notice,
|
||||
* this list of conditions and the following disclaimer.
|
||||
*
|
||||
* 2) Redistributions in binary form must reproduce the above copyright notice,
|
||||
* this list of conditions and the following disclaimer in the documentation and/or
|
||||
* other materials provided with the distribution.
|
||||
*
|
||||
* 3) Neither the name of Wind River Systems nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software without specific
|
||||
* prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER OR CONTRIBUTORS 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.
|
||||
*/
|
||||
|
||||
/**
|
||||
*/
|
||||
|
||||
#include <dirent.h>
|
||||
#include <errno.h>
|
||||
#include <execinfo.h>
|
||||
#include <fcntl.h>
|
||||
#include <limits.h>
|
||||
#include <netdb.h>
|
||||
#include <poll.h>
|
||||
#include <pthread.h>
|
||||
#include <resolv.h>
|
||||
#include <sched.h>
|
||||
#include <signal.h>
|
||||
#include <stdarg.h>
|
||||
#include <stdbool.h>
|
||||
#include <stddef.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <time.h>
|
||||
#include <unistd.h>
|
||||
#include <arpa/inet.h>
|
||||
#include <netinet/in.h>
|
||||
#include <sys/inotify.h>
|
||||
#include <sys/ioctl.h>
|
||||
#include <sys/socket.h>
|
||||
#include <sys/stat.h>
|
||||
#include <sys/time.h>
|
||||
#include <sys/types.h>
|
||||
#include <sys/un.h>
|
||||
#include <sys/wait.h>
|
||||
#include "misc.h"
|
||||
#include "host_instance_mgmt.h"
|
||||
|
||||
|
||||
/* When a new instance starts up it will create a named unix socket in a known
|
||||
directory with a known filename format.
|
||||
|
||||
We will monitor the directory using inotify. On detection of a new instance we
|
||||
will add the instance to our list of instances, create a socket, and connect it
|
||||
to the named socket. On detection of a deleted instance we will tear it all
|
||||
down.
|
||||
|
||||
We need to be able to map from socket to instance name and vice versa.
|
||||
*/
|
||||
|
||||
// Main poll structure management stuff
|
||||
struct pollfd pollfds[MAX_INSTANCES];
|
||||
int nfds;
|
||||
|
||||
int inotify_fd;
|
||||
static int inotify_watch_id;
|
||||
static struct inotify_event *event_ptr;
|
||||
static int event_size;
|
||||
|
||||
// Directory to watch for sockets
|
||||
const char* host_virtio_dir = "/var/lib/libvirt/qemu";
|
||||
|
||||
// Mapping between instance name and fd for its connection
|
||||
typedef struct {
|
||||
int fd;
|
||||
int pollfd_index;
|
||||
char name[INSTANCE_NAME_SIZE];
|
||||
} instance_t;
|
||||
|
||||
static int max_instance=-1;
|
||||
static instance_t instances[MAX_INSTANCES];
|
||||
|
||||
|
||||
// Lookup table indexed by instance connection fd.
|
||||
// Assumes fd re-use otherwise the table would need to be bigger.
|
||||
static instance_t *instance_ptrs[MAX_FDS_HOST];
|
||||
|
||||
|
||||
// Linked list nodes for queue of connections to be retried.
|
||||
struct conn_retry {
|
||||
struct conn_retry *next;
|
||||
unsigned long long next_try; // next retry time in nanoseconds
|
||||
int sock;
|
||||
int addrlen;
|
||||
struct sockaddr_un un;
|
||||
char instance_name[INSTANCE_NAME_SIZE];
|
||||
char file_name[];
|
||||
};
|
||||
typedef struct conn_retry conn_retry_t;
|
||||
|
||||
// Head/tail pointers for queue of connections to be retried.
|
||||
static conn_retry_t *retry_list;
|
||||
static conn_retry_t *retry_list_tail;
|
||||
|
||||
|
||||
|
||||
// Look up the instance given the fd
|
||||
char *instance_name_by_fd(int fd)
|
||||
{
|
||||
if (fd < MAX_FDS_HOST)
|
||||
return instance_ptrs[fd]->name;
|
||||
else
|
||||
return NULL;
|
||||
}
|
||||
|
||||
// Look up the instance given the instance name
|
||||
instance_t *instance_find_by_instance_name(char *name)
|
||||
{
|
||||
int i;
|
||||
for (i=0;i<=max_instance;i++) {
|
||||
instance_t *instance = instances + i;
|
||||
|
||||
// Skip the entry if it has been invalidated.
|
||||
if (instance->fd == -1)
|
||||
continue;
|
||||
if (strncmp(instance->name, name, INSTANCE_NAME_SIZE) == 0)
|
||||
return instance;
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
|
||||
// Look up the connection socket given the instance name
|
||||
int fd_find_by_instance_name(char *name)
|
||||
{
|
||||
instance_t *instance = instance_find_by_instance_name(name);
|
||||
if (instance)
|
||||
return instance->fd;
|
||||
else
|
||||
return -1;
|
||||
}
|
||||
|
||||
|
||||
// Get the next available slot in the instance table.
|
||||
instance_t *instance_get_entry()
|
||||
{
|
||||
int i;
|
||||
|
||||
// Use empty element in the existing array if possible.
|
||||
for (i=0;i<=max_instance;i++) {
|
||||
instance_t *instance = instances+i;
|
||||
if (instance->fd == -1)
|
||||
return instance;
|
||||
}
|
||||
// No empty elements, use a new one.
|
||||
if (max_instance <= MAX_INSTANCES) {
|
||||
max_instance++;
|
||||
return instances+max_instance;
|
||||
}
|
||||
PRINT_ERR("unable to add fd, already at limit\n");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
// Return the instance to the instance table.
|
||||
void instance_put_entry(instance_t *instance)
|
||||
{
|
||||
int i;
|
||||
instance->fd = -1;
|
||||
i = (instance - instances)/sizeof(*instance);
|
||||
if (i == max_instance)
|
||||
max_instance--;
|
||||
}
|
||||
|
||||
|
||||
void init_pollfd(struct pollfd *pfd, int fd, short events)
|
||||
{
|
||||
pfd->fd = fd;
|
||||
pfd->events = events;
|
||||
pfd->revents = 0;
|
||||
}
|
||||
|
||||
// Add a new file descriptor to be monitored, return the index
|
||||
// in the pollfds table.
|
||||
int pollfd_add(int fd, short events)
|
||||
{
|
||||
int i;
|
||||
// Use empty element in the existing array if possible.
|
||||
for (i=0;i<nfds;i++) {
|
||||
if (pollfds[i].fd == -1) {
|
||||
// Use this element
|
||||
printf("reusing pollfd index %d\n", i);
|
||||
init_pollfd(pollfds+i, fd, events);
|
||||
return i;
|
||||
}
|
||||
}
|
||||
// No empty elements, use a new one.
|
||||
if (nfds < MAX_INSTANCES) {
|
||||
int tmp = nfds;
|
||||
nfds++;
|
||||
PRINT_DEBUG("using new pollfd index %d\n", tmp);
|
||||
init_pollfd(pollfds+tmp, fd, events);
|
||||
return tmp;
|
||||
}
|
||||
PRINT_ERR("unable to add fd, already at limit\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
// Delete the specified index in the pollfds table. */
|
||||
void pollfd_del_idx(int idx)
|
||||
{
|
||||
// Invalidate the pollfd table entry.
|
||||
pollfds[idx].fd = -1;
|
||||
|
||||
// If we just invalidated the last entry in the array
|
||||
// then decrement nfds until we get to a valid entry.
|
||||
while(pollfds[nfds-1].fd == -1)
|
||||
nfds--;
|
||||
}
|
||||
|
||||
// Set up all the data structures for a new instance.
|
||||
int add_instance(int fd, short events, char *name)
|
||||
{
|
||||
if (fd >= MAX_FDS_HOST) {
|
||||
PRINT_ERR("fd too large to store");
|
||||
return -1;
|
||||
}
|
||||
|
||||
// Check if the instance is already in our list;
|
||||
instance_t *ptr = instance_find_by_instance_name(name);
|
||||
if (ptr) {
|
||||
PRINT_INFO("instance %.20s already in table", name);
|
||||
return 0;
|
||||
} else {
|
||||
instance_t *instance;
|
||||
int idx;
|
||||
if (max_instance == MAX_INSTANCES-1) {
|
||||
PRINT_ERR("hit max number of instances");
|
||||
return -1;
|
||||
}
|
||||
|
||||
idx = pollfd_add(fd, events);
|
||||
if (idx == -1)
|
||||
return -1;
|
||||
|
||||
PRINT_DEBUG("adding instance %.20s at pollfd index %d\n", name, idx);
|
||||
|
||||
// Claim a new instance struct element.
|
||||
instance = instance_get_entry();
|
||||
instance->fd = fd;
|
||||
instance->pollfd_index = idx;
|
||||
strncpy(instance->name, name, sizeof(instance->name));
|
||||
|
||||
// Index the new element for easy access later.
|
||||
instance_ptrs[fd] = instance;
|
||||
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
// The instance socket has disappeared, tear it all down.
|
||||
void vio_full_disconnect(instance_t *instance)
|
||||
{
|
||||
close(instance->fd);
|
||||
|
||||
// Clear the lookup table entry.
|
||||
instance_ptrs[instance->fd] = NULL;
|
||||
|
||||
// Clear the pollfd table entry.
|
||||
pollfd_del_idx(instance->pollfd_index);
|
||||
|
||||
// Clear the instance table entry
|
||||
instance_put_entry(instance);
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* Check a filename against the expected pattern for a cgcs messaging socket.
|
||||
* If satisfied, writes to the passed-in instance_name arg;
|
||||
*
|
||||
* Returns a pointer to the instance name on success, or NULL on failure.
|
||||
*/
|
||||
char *file_to_instance_name(char *filename, char* instance_name,
|
||||
unsigned int inst_name_len) {
|
||||
int rc;
|
||||
char format_string[100];
|
||||
|
||||
if (inst_name_len == 0)
|
||||
return NULL;
|
||||
|
||||
snprintf(format_string, sizeof(format_string),
|
||||
"cgcs.messaging.%%%d[^.].sock", inst_name_len-1);
|
||||
rc = sscanf(filename, format_string, instance_name);
|
||||
if (rc == 1)
|
||||
return instance_name;
|
||||
else
|
||||
return NULL;
|
||||
}
|
||||
|
||||
// poll() has told us the socket has been disconnected
|
||||
void disconnect_guest(int fd)
|
||||
{
|
||||
instance_t *instance = instance_ptrs[fd];
|
||||
|
||||
// Sanity check
|
||||
if (instance->fd != fd)
|
||||
return;
|
||||
|
||||
PRINT_INFO("Detected disconnect of instance '%.20s'\n", instance->name);
|
||||
vio_full_disconnect(instance);
|
||||
}
|
||||
|
||||
|
||||
|
||||
// Inotify has told us that a file has been deleted.
|
||||
static void socket_deleted(char *fn)
|
||||
{
|
||||
char buf[INSTANCE_NAME_SIZE];
|
||||
char* instance_name;
|
||||
instance_t * instance;
|
||||
|
||||
if (!fn)
|
||||
return;
|
||||
|
||||
instance_name = file_to_instance_name(fn, buf, sizeof(buf));
|
||||
if (!instance_name)
|
||||
// Not a file we care about.
|
||||
return;
|
||||
|
||||
instance = instance_find_by_instance_name(instance_name);
|
||||
if (!instance) {
|
||||
PRINT_ERR("Couldn't find record for instance %.20s\n", instance_name);
|
||||
return;
|
||||
}
|
||||
|
||||
PRINT_INFO("Detected deletion of vio file '%s'\n", fn);
|
||||
vio_full_disconnect(instance);
|
||||
}
|
||||
|
||||
// Get time in nanoseconds
|
||||
static unsigned long long gettime()
|
||||
{
|
||||
struct timespec ts;
|
||||
clock_gettime(CLOCK_MONOTONIC, &ts);
|
||||
return (unsigned long long)ts.tv_sec * 1000000000ULL + ts.tv_nsec;
|
||||
}
|
||||
|
||||
// Time till next connection retry in milliseconds, for use as poll() timeout.
|
||||
int next_connection_retry_interval()
|
||||
{
|
||||
unsigned long long time_ns;
|
||||
if (!retry_list)
|
||||
return -1; // infinite timeout
|
||||
|
||||
time_ns = gettime();
|
||||
if (time_ns > retry_list->next_try)
|
||||
return 0; // immediate timeout
|
||||
else
|
||||
return (retry_list->next_try - time_ns)/1000000; // calculated timeout
|
||||
}
|
||||
|
||||
// We always enqueue at the list tail
|
||||
static void enqueue_retry(conn_retry_t *retry)
|
||||
{
|
||||
if (retry_list_tail)
|
||||
retry_list_tail->next = retry;
|
||||
else
|
||||
retry_list = retry;
|
||||
retry_list_tail = retry;
|
||||
retry->next = NULL;
|
||||
}
|
||||
|
||||
// We always dequeue from the list head
|
||||
static conn_retry_t *dequeue_retry()
|
||||
{
|
||||
conn_retry_t *tmp = retry_list;
|
||||
if (retry_list)
|
||||
retry_list = retry_list->next;
|
||||
if (!retry_list)
|
||||
retry_list_tail = NULL;
|
||||
return tmp;
|
||||
}
|
||||
|
||||
// The initial connection attempt failed, add the socket to the connection
|
||||
// retry list.
|
||||
static void queue_connection_retry(int sock, char *filename,
|
||||
char *instance_name, struct sockaddr_un *un, int addrlen)
|
||||
{
|
||||
PRINT_DEBUG("attempting to queue '%s' for connection retry\n", filename);
|
||||
conn_retry_t *retry = malloc(sizeof(*retry) + strlen(filename) + 1);
|
||||
if (!retry) {
|
||||
PRINT_ERR("unable to allocate memory for connection retry\n");
|
||||
return;
|
||||
}
|
||||
|
||||
retry->sock = sock;
|
||||
strncpy(retry->instance_name, instance_name, sizeof(retry->instance_name));
|
||||
strcpy(retry->file_name, filename);
|
||||
retry->next_try = gettime() + 1000000000ULL; // delay for one second
|
||||
memcpy(&retry->un, un, sizeof(retry->un));
|
||||
retry->addrlen = addrlen;
|
||||
|
||||
enqueue_retry(retry);
|
||||
}
|
||||
|
||||
|
||||
// We've detected a new socket corresponding to a VM. Try and open
|
||||
// a connection to it.
|
||||
static int socket_added(char *filename)
|
||||
{
|
||||
int rc;
|
||||
int addrlen;
|
||||
int sock;
|
||||
struct sockaddr_un un;
|
||||
char pathname[PATH_MAX];
|
||||
char *instance_name;
|
||||
char namebuf[INSTANCE_NAME_SIZE];
|
||||
instance_t * instance;
|
||||
int flags;
|
||||
|
||||
if (!filename) {
|
||||
PRINT_ERR("socket_added called with null filename\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
instance_name = file_to_instance_name(filename, namebuf, sizeof(namebuf));
|
||||
if (!instance_name) {
|
||||
// Not a bug, just not a file we care about.
|
||||
return -1;
|
||||
}
|
||||
|
||||
instance = instance_find_by_instance_name(instance_name);
|
||||
if (instance) {
|
||||
PRINT_DEBUG("'%s' is already known\n", instance_name);
|
||||
return 0;
|
||||
}
|
||||
|
||||
snprintf(pathname, sizeof(pathname), "%s/%s", host_virtio_dir, filename);
|
||||
|
||||
sock = socket(AF_UNIX, SOCK_STREAM, 0);
|
||||
if (sock < 0) {
|
||||
PRINT_ERR("failed to get socket: %m\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
flags = fcntl(sock, F_GETFL, 0);
|
||||
rc = fcntl(sock, F_SETFL, flags | O_NONBLOCK);
|
||||
if (rc < 0) {
|
||||
PRINT_ERR("fcntl failed: %s\n", strerror(errno));
|
||||
close(sock);
|
||||
return -1;
|
||||
}
|
||||
|
||||
un.sun_family = AF_UNIX;
|
||||
snprintf(pathname, sizeof(pathname), "%s/%s", host_virtio_dir, filename);
|
||||
strcpy(un.sun_path, pathname);
|
||||
addrlen = offsetof(struct sockaddr_un, sun_path) + strlen(pathname);
|
||||
|
||||
rc = connect(sock, (struct sockaddr *)&un, addrlen);
|
||||
if (rc < 0) {
|
||||
if (errno == ECONNREFUSED || errno == EAGAIN) {
|
||||
// temporary glitch, retry later
|
||||
queue_connection_retry(sock, filename, instance_name, &un, addrlen);
|
||||
return 0;
|
||||
} else {
|
||||
PRINT_ERR("connect to '%s' failed: %m\n", pathname);
|
||||
close(sock);
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
PRINT_INFO("Connection accepted to '%s'\n", pathname);
|
||||
|
||||
rc = add_instance(sock, POLLIN, instance_name);
|
||||
if (rc < 0) {
|
||||
close(sock);
|
||||
return -1;
|
||||
}
|
||||
|
||||
PRINT_INFO("added instance at '%s'\n", filename);
|
||||
PRINT_INFO("registered instance sock %d\n", sock);
|
||||
return 0;
|
||||
}
|
||||
|
||||
// process any outstanding connection retries
|
||||
void process_connection_retries()
|
||||
{
|
||||
int rc;
|
||||
conn_retry_t *retry;
|
||||
unsigned long long time;
|
||||
|
||||
while (retry_list) {
|
||||
time = gettime();
|
||||
if (time < retry_list->next_try)
|
||||
return;
|
||||
|
||||
retry = dequeue_retry();
|
||||
PRINT_DEBUG("dequeued '%s' for connect() retry\n", retry->file_name);
|
||||
rc = connect(retry->sock, (struct sockaddr *)&retry->un,
|
||||
retry->addrlen);
|
||||
if (rc < 0) {
|
||||
if (errno == ECONNREFUSED || errno == EAGAIN) {
|
||||
// VM hasn't registered socket yet, retry later
|
||||
retry->next_try = time + 1000000000ULL; //try again in a second
|
||||
PRINT_DEBUG("connection for '%s' refused, enqueuing for retry\n",
|
||||
retry->file_name);
|
||||
enqueue_retry(retry);
|
||||
continue;
|
||||
} else {
|
||||
PRINT_ERR("connect() for '%s' failed: %m\n", retry->file_name);
|
||||
close(retry->sock);
|
||||
free(retry);
|
||||
continue;
|
||||
}
|
||||
}
|
||||
|
||||
PRINT_INFO("Connection accepted to '%s'\n", retry->file_name);
|
||||
|
||||
rc = add_instance(retry->sock, POLLIN, retry->instance_name);
|
||||
if (rc < 0) {
|
||||
close(retry->sock);
|
||||
free(retry);
|
||||
continue;
|
||||
}
|
||||
|
||||
// Success path
|
||||
PRINT_INFO("registered instance sock %d\n", retry->sock);
|
||||
|
||||
PRINT_DEBUG("freeing retry struct for '%s'\n", retry->un.sun_path);
|
||||
free(retry);
|
||||
}
|
||||
}
|
||||
|
||||
void handle_inotify_event()
|
||||
{
|
||||
int len;
|
||||
int bufsize = sizeof(struct inotify_event) + PATH_MAX + 1;
|
||||
char buf[bufsize];
|
||||
int offset = 0;
|
||||
|
||||
len = read(inotify_fd, buf, bufsize);
|
||||
if (len < 0)
|
||||
return;
|
||||
|
||||
// There can be multiple events returned in a single buffer, need
|
||||
// to process all of them.
|
||||
while (len-offset > sizeof(struct inotify_event)) {
|
||||
struct inotify_event *in_event_p = (struct inotify_event *)(buf+offset);
|
||||
|
||||
if ((in_event_p->mask & IN_CREATE) == IN_CREATE) {
|
||||
PRINT_DEBUG("inotify creation event for '%s'\n", in_event_p->name);
|
||||
socket_added(in_event_p->name);
|
||||
} else if ((in_event_p->mask & IN_DELETE) == IN_DELETE) {
|
||||
PRINT_DEBUG("inotify deletion event for '%s'\n", in_event_p->name);
|
||||
socket_deleted(in_event_p->name);
|
||||
}
|
||||
|
||||
// Now skip to the next inotify event if there is one
|
||||
offset += (sizeof(struct inotify_event) + in_event_p->len);
|
||||
}
|
||||
}
|
||||
|
||||
static void server_scan()
|
||||
{
|
||||
DIR *dirp;
|
||||
struct dirent entry;
|
||||
struct dirent *result;
|
||||
int rc;
|
||||
|
||||
dirp = opendir(host_virtio_dir);
|
||||
if (!dirp) {
|
||||
PRINT_ERR("opendir %s failed: %m\n", host_virtio_dir);
|
||||
return;
|
||||
}
|
||||
|
||||
while(0 == readdir_r(dirp, &entry, &result)) {
|
||||
if (!result)
|
||||
break;
|
||||
|
||||
rc = socket_added(result->d_name);
|
||||
if (rc == 0) {
|
||||
PRINT_DEBUG("added '%s'\n", result->d_name);
|
||||
}
|
||||
}
|
||||
|
||||
closedir(dirp);
|
||||
}
|
||||
|
||||
|
||||
int server_scan_init()
|
||||
{
|
||||
event_size = sizeof(struct inotify_event) + PATH_MAX + 1;
|
||||
event_ptr = malloc(event_size);
|
||||
inotify_fd = inotify_init();
|
||||
if (inotify_fd < 0) {
|
||||
PRINT_ERR("inotify_init failed: %m\n");
|
||||
return -1;
|
||||
}
|
||||
|
||||
inotify_watch_id = inotify_add_watch(inotify_fd, host_virtio_dir, IN_CREATE | IN_DELETE);
|
||||
if (inotify_watch_id < 0) {
|
||||
PRINT_ERR("vio_add_watch failed: %s\n", strerror(errno));
|
||||
close(inotify_fd);
|
||||
inotify_fd = -1;
|
||||
return -1;
|
||||
}
|
||||
|
||||
pollfd_add(inotify_fd, POLLIN);
|
||||
PRINT_INFO("registered vio inotify sock %d\n", inotify_fd);
|
||||
|
||||
// Do initial scan to pick up existing instance connections
|
||||
server_scan();
|
||||
|
||||
return 0;
|
||||
}
|
@ -1,65 +0,0 @@
|
||||
/*
|
||||
* Copyright (c) 2013-2016, Wind River Systems, Inc.
|
||||
*
|
||||
* 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 above copyright notice,
|
||||
* this list of conditions and the following disclaimer.
|
||||
*
|
||||
* 2) Redistributions in binary form must reproduce the above copyright notice,
|
||||
* this list of conditions and the following disclaimer in the documentation and/or
|
||||
* other materials provided with the distribution.
|
||||
*
|
||||
* 3) Neither the name of Wind River Systems nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software without specific
|
||||
* prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER OR CONTRIBUTORS 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.
|
||||
*/
|
||||
|
||||
#ifndef HOST_INSTANCE_MGMT_H
|
||||
#define HOST_INSTANCE_MGMT_H
|
||||
|
||||
#include "host_guest_msg_type.h"
|
||||
|
||||
// Main poll structure management stuff
|
||||
extern int nfds;
|
||||
extern struct pollfd pollfds[MAX_INSTANCES];
|
||||
int pollfd_add(int fd, short events);
|
||||
|
||||
// Used to scan for added/deleted instances
|
||||
extern int inotify_fd;
|
||||
|
||||
// Server connection added/deleted
|
||||
void handle_inotify_event();
|
||||
|
||||
// Set up inotify-based monitoring
|
||||
int server_scan_init(void);
|
||||
|
||||
// Map from connection fd to instance name
|
||||
char *instance_name_by_fd(int fd);
|
||||
|
||||
// Map from instance name to connection fd
|
||||
int fd_find_by_instance_name(char *name);
|
||||
|
||||
// Handle disconnection of guest
|
||||
void disconnect_guest(int fd);
|
||||
|
||||
// Handle connection retries
|
||||
void process_connection_retries();
|
||||
|
||||
// Time till next connection retry in milliseconds.
|
||||
int next_connection_retry_interval();
|
||||
|
||||
|
||||
#endif
|
@ -1,4 +0,0 @@
|
||||
# Ignore everything in this directory
|
||||
*
|
||||
# Except this file
|
||||
!.gitignore
|
@ -1,239 +0,0 @@
|
||||
/*
|
||||
* Copyright (c) 2013-2016, Wind River Systems, Inc.
|
||||
*
|
||||
* 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 above copyright notice,
|
||||
* this list of conditions and the following disclaimer.
|
||||
*
|
||||
* 2) Redistributions in binary form must reproduce the above copyright notice,
|
||||
* this list of conditions and the following disclaimer in the documentation and/or
|
||||
* other materials provided with the distribution.
|
||||
*
|
||||
* 3) Neither the name of Wind River Systems nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software without specific
|
||||
* prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER OR CONTRIBUTORS 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.
|
||||
*/
|
||||
|
||||
|
||||
/* This implements a library to be used for guest/host clients to interface with
|
||||
* non-standard functionality on the host/guest using the backchannel
|
||||
* communications pathway. (The same library can be used for both directions.)
|
||||
*
|
||||
* The general idea is that everything that goes through this is multiplexed
|
||||
* over a single unix socket so that the guest app only needs to monitor one
|
||||
* socket for activity.
|
||||
*/
|
||||
|
||||
#include <sys/types.h>
|
||||
#include <sys/socket.h>
|
||||
#include <string.h>
|
||||
#include <unistd.h>
|
||||
#include <fcntl.h>
|
||||
#include <stdio.h>
|
||||
#include <sys/un.h>
|
||||
#include <errno.h>
|
||||
#include <stdlib.h>
|
||||
#include <json-c/json.h>
|
||||
|
||||
#include "guest_host_msg.h"
|
||||
#include "host_guest_msg_type.h"
|
||||
|
||||
|
||||
/* Send a message to an address on the host.
|
||||
* Returns 0 on success.
|
||||
* A negative return value indicates an error of some kind.
|
||||
*/
|
||||
int gh_send_msg(gh_info_t *info, const char *dest_addr, const char *msg)
|
||||
{
|
||||
int rc;
|
||||
|
||||
//parse msg data
|
||||
struct json_object *jobj_data = json_tokener_parse(msg);
|
||||
if (jobj_data == NULL) {
|
||||
snprintf(info->errorbuf, sizeof(info->errorbuf)-1, "failed to parse msg");
|
||||
return -1;
|
||||
}
|
||||
|
||||
struct json_object *jobj_outmsg = json_object_new_object();
|
||||
if (jobj_outmsg == NULL) {
|
||||
snprintf(info->errorbuf, sizeof(info->errorbuf)-1, "failed to allocate json object for outmsg");
|
||||
json_object_put(jobj_data);
|
||||
return -1;
|
||||
}
|
||||
|
||||
json_object_object_add(jobj_outmsg, DATA, jobj_data);
|
||||
json_object_object_add(jobj_outmsg, VERSION, json_object_new_int(CUR_VERSION));
|
||||
json_object_object_add(jobj_outmsg, DEST_ADDR, json_object_new_string(dest_addr));
|
||||
|
||||
|
||||
const char *outmsg = json_object_to_json_string_ext(jobj_outmsg, JSON_C_TO_STRING_PLAIN);
|
||||
int msglen = strlen(outmsg);
|
||||
|
||||
rc = sendto(info->sock, outmsg, msglen, 0, (struct sockaddr *) &info->svaddr,
|
||||
info->svaddrlen);
|
||||
if (rc != msglen) {
|
||||
if (rc > 0) {
|
||||
snprintf(info->errorbuf, sizeof(info->errorbuf)-1, "sendto returned %d, expected %d",
|
||||
rc, msglen);
|
||||
} else
|
||||
snprintf(info->errorbuf, sizeof(info->errorbuf)-1, "sendto: %m");
|
||||
goto failed;
|
||||
}
|
||||
|
||||
json_object_put(jobj_outmsg);
|
||||
return 0;
|
||||
failed:
|
||||
json_object_put(jobj_outmsg);
|
||||
return -1;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/* Read a message from the socket and process it. */
|
||||
int gh_process_msg(gh_info_t *info)
|
||||
{
|
||||
char buf[HOST_GUEST_BUFSIZE];
|
||||
int len;
|
||||
|
||||
len = recv(info->sock, buf, sizeof(buf), 0);
|
||||
if (len == -1) {
|
||||
if (errno == EAGAIN)
|
||||
return 0;
|
||||
else {
|
||||
snprintf(info->errorbuf, sizeof(info->errorbuf)-1, "error receiving msg: %m");
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
struct json_object *jobj_msg = json_tokener_parse(buf);
|
||||
if (jobj_msg == NULL) {
|
||||
snprintf(info->errorbuf, sizeof(info->errorbuf)-1, "failed to parse msg");
|
||||
return -1;
|
||||
}
|
||||
|
||||
// parse version
|
||||
struct json_object *jobj_version;
|
||||
if (!json_object_object_get_ex(jobj_msg, VERSION, &jobj_version)) {
|
||||
snprintf(info->errorbuf, sizeof(info->errorbuf)-1, "failed to parse version");
|
||||
goto failed;
|
||||
}
|
||||
int version = json_object_get_int(jobj_version);
|
||||
|
||||
if (version != CUR_VERSION) {
|
||||
snprintf(info->errorbuf, sizeof(info->errorbuf)-1,
|
||||
"invalid version %d, expecting %d", version, CUR_VERSION);
|
||||
goto failed;
|
||||
}
|
||||
|
||||
// parse source address
|
||||
struct json_object *jobj_source_addr;
|
||||
if (!json_object_object_get_ex(jobj_msg, SOURCE_ADDR, &jobj_source_addr)) {
|
||||
snprintf(info->errorbuf, sizeof(info->errorbuf)-1, "failed to parse source_addr");
|
||||
goto failed;
|
||||
}
|
||||
const char *source_addr = json_object_get_string(jobj_source_addr);
|
||||
|
||||
// parse data. data is a json object that is nested inside the msg
|
||||
struct json_object *jobj_data;
|
||||
if (!json_object_object_get_ex(jobj_msg, DATA, &jobj_data)) {
|
||||
snprintf(info->errorbuf, sizeof(info->errorbuf)-1, "failed to parse data");
|
||||
goto failed;
|
||||
}
|
||||
|
||||
if (info->gh_msg_handler)
|
||||
info->gh_msg_handler(source_addr, jobj_data);
|
||||
|
||||
json_object_put(jobj_msg);
|
||||
return 0;
|
||||
|
||||
failed:
|
||||
json_object_put(jobj_msg);
|
||||
return -1;
|
||||
}
|
||||
|
||||
|
||||
/* Allocate socket, set up callbacks, etc. This must be called once before
|
||||
* any other API calls. "addr" is a null-terminated string of 16 chars or less
|
||||
* (including the null) that is unique within this guest. "info" is the address
|
||||
* of a value-result pointer that will be updated during the call.
|
||||
*
|
||||
* On success returns a socket and "info" is updated to point to an allocated chunk of memory.
|
||||
* On error will return -1. If it was unable to allocate memory then "info" will be
|
||||
* NULL. If it was able to allocate memory but something else failed then "info" will
|
||||
* be non-NULL and you can call gh_get_error() to get an error message.
|
||||
*/
|
||||
|
||||
int gh_init(gh_msg_handler_t msg_handler, char *addr, gh_info_t **in_info)
|
||||
{
|
||||
int flags;
|
||||
int addrlen;
|
||||
struct sockaddr_un cliaddr;
|
||||
gh_info_t *info;
|
||||
|
||||
*in_info = malloc(sizeof(**in_info));
|
||||
if (!*in_info)
|
||||
/* unable to allocate memory */
|
||||
return -1;
|
||||
|
||||
info = *in_info;
|
||||
|
||||
/* socket for talking to guest agent */
|
||||
info->sock = socket(AF_UNIX, SOCK_DGRAM, 0);
|
||||
if (info->sock == -1) {
|
||||
snprintf(info->errorbuf, sizeof(info->errorbuf)-1, "unable to open socket: %m");
|
||||
goto free_out;
|
||||
}
|
||||
|
||||
flags = fcntl(info->sock, F_GETFL, 0);
|
||||
fcntl(info->sock, F_SETFL, flags | O_NONBLOCK);
|
||||
|
||||
/* our address */
|
||||
memset(&cliaddr, 0, sizeof(struct sockaddr_un));
|
||||
cliaddr.sun_family = AF_UNIX;
|
||||
cliaddr.sun_path[0] = '\0';
|
||||
strncpy(cliaddr.sun_path+1, addr,
|
||||
sizeof(cliaddr.sun_path) - 2);
|
||||
addrlen = sizeof(sa_family_t) + strlen(addr) + 1;
|
||||
|
||||
if (bind(info->sock, (struct sockaddr *) &cliaddr, addrlen) == -1) {
|
||||
snprintf(info->errorbuf, sizeof(info->errorbuf)-1, "unable to bind socket: %m");
|
||||
goto close_out;
|
||||
}
|
||||
|
||||
/* guest agent address */
|
||||
memset(&info->svaddr, 0, sizeof(struct sockaddr_un));
|
||||
info->svaddr.sun_family = AF_UNIX;
|
||||
info->svaddr.sun_path[0] = '\0';
|
||||
strncpy(info->svaddr.sun_path+1, AGENT_ADDR, sizeof(info->svaddr.sun_path) - 2);
|
||||
info->svaddrlen = sizeof(sa_family_t) + strlen(AGENT_ADDR) + 1;
|
||||
|
||||
/* set up callback pointers */
|
||||
info->gh_msg_handler = msg_handler;
|
||||
|
||||
return info->sock;
|
||||
|
||||
close_out:
|
||||
close(info->sock);
|
||||
free_out:
|
||||
free(info);
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* Provide access to the error message if the most recent call failed. */
|
||||
char *gh_get_error(gh_info_t *info)
|
||||
{
|
||||
return info->errorbuf;
|
||||
}
|
@ -1,250 +0,0 @@
|
||||
/*
|
||||
* Copyright (c) 2013-2016, Wind River Systems, Inc.
|
||||
*
|
||||
* 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 above copyright notice,
|
||||
* this list of conditions and the following disclaimer.
|
||||
*
|
||||
* 2) Redistributions in binary form must reproduce the above copyright notice,
|
||||
* this list of conditions and the following disclaimer in the documentation and/or
|
||||
* other materials provided with the distribution.
|
||||
*
|
||||
* 3) Neither the name of Wind River Systems nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software without specific
|
||||
* prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER OR CONTRIBUTORS 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.
|
||||
*/
|
||||
|
||||
|
||||
/* This implements a library to be used for host clients to interface with
|
||||
* non-standard functionality on the guest using the backchannel
|
||||
* communications pathway.
|
||||
*
|
||||
* The general idea is that everything that goes through this is multiplexed
|
||||
* over a single unix socket so that the guest app only needs to monitor one
|
||||
* socket for activity.
|
||||
*
|
||||
* This is almost identical to lib_guest_host_msg.c but some data structures
|
||||
* are different. Might be possible to extract some common stuff.
|
||||
*/
|
||||
|
||||
#include <sys/types.h>
|
||||
#include <sys/socket.h>
|
||||
#include <string.h>
|
||||
#include <unistd.h>
|
||||
#include <fcntl.h>
|
||||
#include <stdio.h>
|
||||
#include <sys/un.h>
|
||||
#include <errno.h>
|
||||
#include <stdlib.h>
|
||||
#include <json-c/json.h>
|
||||
|
||||
#include "host_guest_msg_type.h"
|
||||
#include "host_guest_msg.h"
|
||||
|
||||
|
||||
/* Send a message to an address on the host.
|
||||
* Returns 0 on success.
|
||||
* A negative return value indicates an error of some kind.
|
||||
*/
|
||||
int hg_send_msg(hg_info_t *info, const char *dest_addr, const char *dest_instance,
|
||||
const char *msg)
|
||||
{
|
||||
int rc;
|
||||
|
||||
//parse msg data
|
||||
struct json_object *jobj_data = json_tokener_parse(msg);
|
||||
if (jobj_data == NULL) {
|
||||
snprintf(info->errorbuf, sizeof(info->errorbuf)-1, "failed to parse msg");
|
||||
return -1;
|
||||
}
|
||||
|
||||
struct json_object *jobj_outmsg = json_object_new_object();
|
||||
if (jobj_outmsg == NULL) {
|
||||
snprintf(info->errorbuf, sizeof(info->errorbuf)-1, "failed to allocate json object for outmsg");
|
||||
json_object_put(jobj_data);
|
||||
return -1;
|
||||
}
|
||||
|
||||
json_object_object_add(jobj_outmsg, DATA, jobj_data);
|
||||
json_object_object_add(jobj_outmsg, VERSION, json_object_new_int(CUR_VERSION));
|
||||
json_object_object_add(jobj_outmsg, DEST_ADDR, json_object_new_string(dest_addr));
|
||||
json_object_object_add(jobj_outmsg, DEST_INSTANCE, json_object_new_string(dest_instance));
|
||||
|
||||
const char *outmsg = json_object_to_json_string_ext(jobj_outmsg, JSON_C_TO_STRING_PLAIN);
|
||||
int msglen = strlen(outmsg);
|
||||
|
||||
rc = sendto(info->sock, outmsg, msglen, 0, (struct sockaddr *) &info->svaddr,
|
||||
info->svaddrlen);
|
||||
if (rc != msglen) {
|
||||
if (rc > 0) {
|
||||
snprintf(info->errorbuf, sizeof(info->errorbuf)-1, "sendto returned %d, expected %d",
|
||||
rc, msglen);
|
||||
} else
|
||||
snprintf(info->errorbuf, sizeof(info->errorbuf)-1, "sendto: %m");
|
||||
goto failed;
|
||||
}
|
||||
|
||||
json_object_put(jobj_outmsg);
|
||||
return 0;
|
||||
failed:
|
||||
json_object_put(jobj_outmsg);
|
||||
return -1;
|
||||
}
|
||||
|
||||
|
||||
|
||||
/* Read a message from the socket and process it. */
|
||||
int hg_process_msg(hg_info_t *info)
|
||||
{
|
||||
char buf[HOST_GUEST_BUFSIZE];
|
||||
int len;
|
||||
|
||||
len = recv(info->sock, buf, sizeof(buf), 0);
|
||||
if (len == -1) {
|
||||
if (errno == EAGAIN)
|
||||
return 0;
|
||||
else {
|
||||
snprintf(info->errorbuf, sizeof(info->errorbuf)-1, "error receiving msg: %m");
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
struct json_object *jobj_msg = json_tokener_parse(buf);
|
||||
if (jobj_msg == NULL) {
|
||||
snprintf(info->errorbuf, sizeof(info->errorbuf)-1, "failed to parse msg");
|
||||
return -1;
|
||||
}
|
||||
|
||||
// parse version
|
||||
struct json_object *jobj_version;
|
||||
if (!json_object_object_get_ex(jobj_msg, VERSION, &jobj_version)) {
|
||||
snprintf(info->errorbuf, sizeof(info->errorbuf)-1, "failed to parse version");
|
||||
goto failed;
|
||||
}
|
||||
int version = json_object_get_int(jobj_version);
|
||||
|
||||
if (version != CUR_VERSION) {
|
||||
snprintf(info->errorbuf, sizeof(info->errorbuf)-1, "invalid version");
|
||||
goto failed;
|
||||
}
|
||||
|
||||
// parse source address
|
||||
struct json_object *jobj_source_addr;
|
||||
if (!json_object_object_get_ex(jobj_msg, SOURCE_ADDR, &jobj_source_addr)) {
|
||||
snprintf(info->errorbuf, sizeof(info->errorbuf)-1, "failed to parse source_addr");
|
||||
goto failed;
|
||||
}
|
||||
const char *source_addr = json_object_get_string(jobj_source_addr);
|
||||
|
||||
// parse source instance
|
||||
struct json_object *jobj_source_instance;
|
||||
if (!json_object_object_get_ex(jobj_msg, SOURCE_INSTANCE, &jobj_source_instance)) {
|
||||
snprintf(info->errorbuf, sizeof(info->errorbuf)-1, "failed to parse source_instance");
|
||||
goto failed;
|
||||
}
|
||||
const char *source_instance = json_object_get_string(jobj_source_instance);
|
||||
|
||||
// parse data. data is a json object that is nested inside the msg
|
||||
struct json_object *jobj_data;
|
||||
if (!json_object_object_get_ex(jobj_msg, DATA, &jobj_data)) {
|
||||
snprintf(info->errorbuf, sizeof(info->errorbuf)-1, "failed to parse data");
|
||||
goto failed;
|
||||
}
|
||||
|
||||
if (info->hg_msg_handler)
|
||||
info->hg_msg_handler(source_addr, source_instance, jobj_data);
|
||||
|
||||
json_object_put(jobj_msg);
|
||||
return 0;
|
||||
|
||||
failed:
|
||||
json_object_put(jobj_msg);
|
||||
return -1;
|
||||
}
|
||||
|
||||
|
||||
/* Allocate socket, set up callbacks, etc. This must be called once before
|
||||
* any other API calls. "addr" is a null-terminated string of 16 chars or less
|
||||
* (including the null) that is unique within this guest. "info" is the address
|
||||
* of a value-result pointer that will be updated during the call.
|
||||
*
|
||||
* On success returns a socket and "info" is updated to point to an allocated chunk of memory.
|
||||
* On error will return -1. If it was unable to allocate memory then "info" will be
|
||||
* NULL. If it was able to allocate memory but something else failed then "info" will
|
||||
* be non-NULL and you can call hg_get_error() to get an error message.
|
||||
*/
|
||||
|
||||
int hg_init(hg_msg_handler_t msg_handler, char *addr, hg_info_t **in_info)
|
||||
{
|
||||
int flags;
|
||||
int addrlen;
|
||||
struct sockaddr_un cliaddr;
|
||||
hg_info_t *info;
|
||||
|
||||
*in_info = malloc(sizeof(**in_info));
|
||||
if (!*in_info)
|
||||
/* unable to allocate memory */
|
||||
return -1;
|
||||
|
||||
info = *in_info;
|
||||
|
||||
/* socket for talking to guest agent */
|
||||
info->sock = socket(AF_UNIX, SOCK_DGRAM, 0);
|
||||
if (info->sock == -1) {
|
||||
snprintf(info->errorbuf, sizeof(info->errorbuf)-1, "unable to open socket: %m");
|
||||
goto free_out;
|
||||
}
|
||||
|
||||
flags = fcntl(info->sock, F_GETFL, 0);
|
||||
fcntl(info->sock, F_SETFL, flags | O_NONBLOCK);
|
||||
|
||||
/* our address */
|
||||
memset(&cliaddr, 0, sizeof(struct sockaddr_un));
|
||||
cliaddr.sun_family = AF_UNIX;
|
||||
cliaddr.sun_path[0] = '\0';
|
||||
strncpy(cliaddr.sun_path+1, addr,
|
||||
sizeof(cliaddr.sun_path) - 2);
|
||||
addrlen = sizeof(sa_family_t) + strlen(addr) + 1;
|
||||
|
||||
if (bind(info->sock, (struct sockaddr *) &cliaddr, addrlen) == -1) {
|
||||
snprintf(info->errorbuf, sizeof(info->errorbuf)-1, "unable to bind socket: %m");
|
||||
goto close_out;
|
||||
}
|
||||
|
||||
/* guest agent address */
|
||||
memset(&info->svaddr, 0, sizeof(struct sockaddr_un));
|
||||
info->svaddr.sun_family = AF_UNIX;
|
||||
info->svaddr.sun_path[0] = '\0';
|
||||
strncpy(info->svaddr.sun_path+1, AGENT_ADDR, sizeof(info->svaddr.sun_path) - 2);
|
||||
info->svaddrlen = sizeof(sa_family_t) + strlen(AGENT_ADDR) + 1;
|
||||
|
||||
/* set up callback pointers */
|
||||
info->hg_msg_handler = msg_handler;
|
||||
|
||||
return info->sock;
|
||||
|
||||
close_out:
|
||||
close(info->sock);
|
||||
free_out:
|
||||
free(info);
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* Provide access to the error message if the most recent call failed. */
|
||||
char *hg_get_error(hg_info_t *info)
|
||||
{
|
||||
return info->errorbuf;
|
||||
}
|
@ -1,42 +0,0 @@
|
||||
/*
|
||||
* Copyright (c) 2013-2016, Wind River Systems, Inc.
|
||||
*
|
||||
* 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 above copyright notice,
|
||||
* this list of conditions and the following disclaimer.
|
||||
*
|
||||
* 2) Redistributions in binary form must reproduce the above copyright notice,
|
||||
* this list of conditions and the following disclaimer in the documentation and/or
|
||||
* other materials provided with the distribution.
|
||||
*
|
||||
* 3) Neither the name of Wind River Systems nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software without specific
|
||||
* prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER OR CONTRIBUTORS 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.
|
||||
*/
|
||||
|
||||
#ifndef CGCS_MSG_MISC_H
|
||||
#define CGCS_MSG_MISC_H
|
||||
|
||||
#include <syslog.h>
|
||||
|
||||
#define PRINT(level, format, ...) \
|
||||
syslog(level, "%s(%d): " format, __FILE__, __LINE__, ##__VA_ARGS__)
|
||||
|
||||
#define PRINT_ERR(format, ...) PRINT(LOG_ERR, format, ##__VA_ARGS__)
|
||||
#define PRINT_INFO(format, ...) PRINT(LOG_INFO, format, ##__VA_ARGS__)
|
||||
#define PRINT_DEBUG(format, ...) PRINT(LOG_DEBUG, format, ##__VA_ARGS__)
|
||||
|
||||
#endif
|
@ -1,4 +0,0 @@
|
||||
# Ignore everything in this directory
|
||||
*
|
||||
# Except this file
|
||||
!.gitignore
|
@ -1,12 +0,0 @@
|
||||
[Unit]
|
||||
Description=Titanium Cloud Host Guest Messaging Agent
|
||||
After=cloud-init.service
|
||||
|
||||
[Service]
|
||||
ExecStart=/usr/sbin/guest_agent
|
||||
Type=simple
|
||||
Restart=always
|
||||
|
||||
[Install]
|
||||
WantedBy=multi-user.target
|
||||
|
@ -1,78 +0,0 @@
|
||||
#!/bin/sh
|
||||
#
|
||||
# Copyright(c) 2013-2016, Wind River Systems, Inc. All rights reserved.
|
||||
# All rights reserved.
|
||||
#
|
||||
# Redistribution and use in source and binary forms, with or without
|
||||
# modification, are permitted provided that the following conditions
|
||||
# are met:
|
||||
#
|
||||
# * Redistributions of source code must retain the above copyright
|
||||
# notice, this list of conditions and the following disclaimer.
|
||||
# * Redistributions in binary form must reproduce the above copyright
|
||||
# notice, this list of conditions and the following disclaimer in
|
||||
# the documentation and/or other materials provided with the
|
||||
# distribution.
|
||||
# * Neither the name of Wind River Systems nor the names of its
|
||||
# contributors may be used to endorse or promote products derived
|
||||
# from this software without specific prior written permission.
|
||||
#
|
||||
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
# "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 COPYRIGHT
|
||||
# OWNER OR CONTRIBUTORS 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.
|
||||
#
|
||||
|
||||
DAEMON=/usr/sbin/host_agent
|
||||
NAME=host_agent
|
||||
DESC="agent to communicate with guest"
|
||||
ARGS=
|
||||
PIDFILE=/var/run/host_agent.pid
|
||||
|
||||
test -f $DAEMON || exit 0
|
||||
|
||||
case "$1" in
|
||||
start)
|
||||
echo -n "starting $DESC: $NAME... "
|
||||
test -d /var/lib/misc/ || mkdir /var/lib/misc/
|
||||
start-stop-daemon -S -m -b -x $DAEMON --pidfile=$PIDFILE -- $ARGS
|
||||
echo "done."
|
||||
;;
|
||||
stop)
|
||||
echo -n "stopping $DESC: $NAME... "
|
||||
start-stop-daemon -K -x $DAEMON --pidfile=$PIDFILE
|
||||
echo "done."
|
||||
;;
|
||||
status)
|
||||
echo -n "$NAME "
|
||||
start-stop-daemon -q -K -t -x $DAEMON --pidfile=$PIDFILE
|
||||
RET=$?
|
||||
if [ "$RET" = "0" ]; then
|
||||
PID=`cat $PIDFILE`
|
||||
echo "($PID) is running"
|
||||
else
|
||||
echo "is not running"
|
||||
# For lsb compliance return 3 if process not running
|
||||
exit 3
|
||||
fi
|
||||
;;
|
||||
restart)
|
||||
echo "restarting $DESC: $NAME... "
|
||||
$0 stop
|
||||
$0 start
|
||||
echo "done."
|
||||
;;
|
||||
*)
|
||||
echo "Usage: $0 {start|stop|status|restart}"
|
||||
exit 1
|
||||
;;
|
||||
esac
|
||||
|
||||
exit 0
|
@ -1,24 +0,0 @@
|
||||
[process]
|
||||
process = host_agent
|
||||
pidfile = /var/run/host_agent.pid
|
||||
script = /etc/init.d/host_agent
|
||||
style = lsb ; ocf or lsb
|
||||
severity = major ; minor, major, critical
|
||||
restarts = 3 ; restart retries before error assertion
|
||||
interval = 1 ; number of seconds to wait between restarts
|
||||
debounce = 20 ; number of seconds that a process needs to remain
|
||||
; running before degrade is removed and retry count
|
||||
; is cleared.
|
||||
startuptime = 5 ; Seconds to wait after process start before starting the debounce monitor
|
||||
mode = passive ; Monitoring mode: passive (default or if mode field is missing) or active
|
||||
; passive: process death monitoring (default: always)
|
||||
; active: heartbeat monitoring, i.e. request / response messaging
|
||||
; ignore: do not monitor or stop monitoring process
|
||||
subfunction = worker ; Optional label.
|
||||
; Manage this process in the context of a combo host subfunction
|
||||
; Choices: worker or storage.
|
||||
; when specified pmond will wait for
|
||||
; /var/run/.worker_config_complete or
|
||||
; /var/run/.storage_config_complete
|
||||
; ... before managing this process with the specified subfunction
|
||||
; Excluding this label will cause this process to be managed by default on startup
|
@ -1,13 +0,0 @@
|
||||
[Unit]
|
||||
Description=Titanium Cloud Host Guest Messaging Agent
|
||||
After=config.service
|
||||
Before=pmon.service
|
||||
|
||||
[Service]
|
||||
Type=forking
|
||||
ExecStart=/etc/init.d/host_agent start
|
||||
ExecStop=/etc/init.d/host_agent stop
|
||||
PIDFile=/var/run/host_agent.pid
|
||||
|
||||
[Install]
|
||||
WantedBy=multi-user.target
|
@ -1,497 +0,0 @@
|
||||
/*
|
||||
* Copyright (c) 2013-2016, Wind River Systems, Inc.
|
||||
*
|
||||
* 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 above copyright notice,
|
||||
* this list of conditions and the following disclaimer.
|
||||
*
|
||||
* 2) Redistributions in binary form must reproduce the above copyright notice,
|
||||
* this list of conditions and the following disclaimer in the documentation and/or
|
||||
* other materials provided with the distribution.
|
||||
*
|
||||
* 3) Neither the name of Wind River Systems nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software without specific
|
||||
* prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER OR CONTRIBUTORS 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.
|
||||
*/
|
||||
|
||||
|
||||
/* This implements a library to be used for guest clients to interface with
|
||||
* non-standard functionality on the host using the backchannel
|
||||
* communications pathway.
|
||||
*
|
||||
* The general idea is that everything that goes through this is multiplexed
|
||||
* over a single unix socket so that the guest app only needs to monitor one
|
||||
* socket for activity.
|
||||
*/
|
||||
|
||||
#include <sys/types.h>
|
||||
#include <sys/socket.h>
|
||||
#include <string.h>
|
||||
#include <unistd.h>
|
||||
#include <fcntl.h>
|
||||
#include <stdio.h>
|
||||
#include <sys/un.h>
|
||||
#include <errno.h>
|
||||
#include <stdlib.h>
|
||||
#include <json-c/json.h>
|
||||
|
||||
#include "server_group.h"
|
||||
#include "host_guest_msg_type.h"
|
||||
|
||||
/* unix socket abstract namespace address of guest agent */
|
||||
#define GUEST_CLIENT_ADDR "cgcs.server_grp"
|
||||
|
||||
#define HOST_GUEST_BUFSIZE 4096 // max size of message that can be received
|
||||
|
||||
|
||||
/* Server Group message is encoded in JSON format.
|
||||
The message sent out to UNIX socket is a null-terminated JSON format string
|
||||
without embedded newlines.
|
||||
|
||||
Format:
|
||||
{key:value,key:value,..., key:value}
|
||||
|
||||
Key/value pairs:
|
||||
"version": <integer> - version of the interface
|
||||
"type": < string> - one of these types “broadcast", "notification",
|
||||
"status_query", "status_response",
|
||||
"status_response_done”
|
||||
|
||||
"req": <integer> - sequence number for status_query/status_response/
|
||||
status_response_done messages
|
||||
|
||||
"source_instance“: <string> - source instance that send out the broadcast
|
||||
"data": <string> - message content for broadcast, notification,
|
||||
status_query and status_response messages.
|
||||
Must be a null-terminated string without embedded newlines.
|
||||
|
||||
|
||||
Message Types:
|
||||
broadcast - incoming or outgoing
|
||||
notification - incoming, state change of other servers within the
|
||||
server group
|
||||
status_query - outgoing, query the current state of all servers
|
||||
within the server group
|
||||
status_response - incoming, one or more responses to the status_query
|
||||
status_response_done - incoming, last response to the status query
|
||||
|
||||
*/
|
||||
|
||||
// server group message type
|
||||
#define GRP_BROADCAST "broadcast" // broadcast message from another server
|
||||
#define GRP_NOTIFICATION "notification" // notification of server state change
|
||||
#define GRP_STATUS_QUERY "status_query" // query of status of all servers in group
|
||||
#define GRP_STATUS_RESP "status_response" // query response msg (could be several)
|
||||
#define GRP_STATUS_RESP_DONE "status_response_done" // query response done msg (no data)
|
||||
#define GRP_NACK "nack" // nack msg indicating parse or protocol error from host
|
||||
|
||||
|
||||
/* Header for incoming server group messages. The exact contents will differ
|
||||
* depending on message type.
|
||||
*
|
||||
* "len" is the overall length including header.
|
||||
*
|
||||
* For messages with a TYPE of GRP_BROADCAST only, the "sinstance" field
|
||||
* will contain the instance name of the instance that sent the broadcast, and
|
||||
* DATA will contain the message that was sent.
|
||||
*
|
||||
*/
|
||||
static int sock; // socket for talking to guest agent
|
||||
static struct sockaddr_un svaddr; // address of guest agent
|
||||
static int svaddrlen; // length of guest agent address
|
||||
|
||||
static unsigned int status_seqnum; // status query sequence number
|
||||
static char *status_buf; // status query reassembly buffer
|
||||
static unsigned long status_size; // current status buffer size
|
||||
static unsigned long status_len; // currently used buffer length
|
||||
|
||||
#define ERRORSIZE 400
|
||||
static char errorbuf[ERRORSIZE];
|
||||
|
||||
static sg_broadcast_msg_handler_t sg_broadcast_msg_callback;
|
||||
static sg_notification_msg_handler_t sg_notification_msg_callback;
|
||||
static sg_status_msg_handler_t sg_status_msg_callback;
|
||||
|
||||
|
||||
/* Generic routine to send a server group message down to the host. */
|
||||
int sg_send_host_msg(const char *msg_type, int seq, const char *data)
|
||||
{
|
||||
int rc;
|
||||
|
||||
struct json_object *jobj_data = json_object_new_object();
|
||||
if (jobj_data == NULL) {
|
||||
snprintf(errorbuf, ERRORSIZE-1, "failed to allocate json object for data");
|
||||
return -1;
|
||||
}
|
||||
|
||||
json_object_object_add(jobj_data, VERSION, json_object_new_int(CUR_VERSION));
|
||||
json_object_object_add(jobj_data, MSG_TYPE, json_object_new_string(msg_type));
|
||||
if (!strcmp(msg_type, GRP_STATUS_QUERY)) {
|
||||
json_object_object_add(jobj_data, SEQ, json_object_new_int(seq));
|
||||
}
|
||||
|
||||
if (data) {
|
||||
json_object_object_add(jobj_data, DATA, json_object_new_string(data));
|
||||
}
|
||||
|
||||
struct json_object *jobj_outmsg = json_object_new_object();
|
||||
if (jobj_outmsg == NULL) {
|
||||
snprintf(errorbuf, ERRORSIZE-1, "failed to allocate json object for outmsg");
|
||||
json_object_put(jobj_data);
|
||||
return -1;
|
||||
}
|
||||
|
||||
json_object_object_add(jobj_outmsg, DATA, jobj_data);
|
||||
json_object_object_add(jobj_outmsg, VERSION, json_object_new_int(CUR_VERSION));
|
||||
/* This is a known address that nova-compute is listening on */
|
||||
json_object_object_add(jobj_outmsg, DEST_ADDR, json_object_new_string(GUEST_CLIENT_ADDR));
|
||||
|
||||
const char *outmsg = json_object_to_json_string_ext(jobj_outmsg, JSON_C_TO_STRING_PLAIN);
|
||||
int msglen = strlen(outmsg);
|
||||
|
||||
rc = sendto(sock, outmsg, msglen, 0, (struct sockaddr *) &svaddr, svaddrlen);
|
||||
if (rc != msglen) {
|
||||
if (rc > 0) {
|
||||
snprintf(errorbuf, ERRORSIZE-1, "sendto returned %d, expected %d",
|
||||
rc, msglen);
|
||||
} else
|
||||
snprintf(errorbuf, ERRORSIZE-1, "sendto: %m");
|
||||
json_object_put(jobj_outmsg);
|
||||
return -1;
|
||||
}
|
||||
|
||||
json_object_put(jobj_outmsg);
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Send a message to all other servers in our server group. */
|
||||
int sg_msg_broadcast(void *msg, unsigned int len)
|
||||
{
|
||||
return sg_send_host_msg(GRP_BROADCAST, 0, (const char*)msg);
|
||||
}
|
||||
|
||||
/* Ensure the status buffer is at least as big as the specified size.
|
||||
* Call realloc() if necessary to grow the buffer.
|
||||
*/
|
||||
int ensure_status_buf_size(unsigned int size)
|
||||
{
|
||||
if (size > status_size) {
|
||||
/* need to grow the buffer */
|
||||
void *ptr = realloc(status_buf, size);
|
||||
if (!ptr) {
|
||||
/* hopefully shouldn't happen */
|
||||
snprintf(errorbuf, ERRORSIZE-1,
|
||||
"unable to realloc buffer to size %u", size);
|
||||
|
||||
/* give up on current status query */
|
||||
status_seqnum++;
|
||||
status_len = 0;
|
||||
return -1;
|
||||
}
|
||||
status_buf = ptr;
|
||||
status_size = size;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Request current status of all servers in server group. Due to limitations in
|
||||
* the current implementation of host-guest comm channel agents we receive
|
||||
* information on one server per response, then a final "done" message. This
|
||||
* could be changed if we fix the host-guest comm channel to handle arbitrarily
|
||||
* large messages.
|
||||
*
|
||||
* Yes, the current design is not the most robust...might want to consider adding
|
||||
* an indication of how many servers we expect data for and which one we're on
|
||||
* in case we lose a message or something. Better fix might be to just fix the
|
||||
* host-guest comm channel to handle arbitrarily large messages.
|
||||
*/
|
||||
int sg_request_status()
|
||||
{
|
||||
int rc;
|
||||
/* If we were still receiving status updates from a previous query this
|
||||
* will cause them to get dropped.
|
||||
*/
|
||||
status_seqnum++;
|
||||
status_len = 0;
|
||||
|
||||
/* Ensure we have room for an empty list otherwise give up.
|
||||
* Start with a decent size buffer to minimize reallocs.
|
||||
*/
|
||||
if (ensure_status_buf_size(4096) != 0)
|
||||
return -1;
|
||||
|
||||
rc = sg_send_host_msg(GRP_STATUS_QUERY, status_seqnum, NULL);
|
||||
if (rc == 0) {
|
||||
/* start a list in the buffer */
|
||||
status_buf[0] = '[';
|
||||
status_len = 1;
|
||||
}
|
||||
return rc;
|
||||
}
|
||||
|
||||
/* Handle a response to the status query. This should contain the current
|
||||
* status of a single server. We add it to the data accumulating in the buffer.
|
||||
*/
|
||||
int handle_status_resp(unsigned int seqnum, const char *msg, unsigned int len)
|
||||
{
|
||||
if (seqnum != status_seqnum) {
|
||||
snprintf(errorbuf, ERRORSIZE-1,
|
||||
"status resp seqnum %u doesn't match expected %u",
|
||||
seqnum, status_seqnum);
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* Ensure we have room for new data otherwise give up.
|
||||
* Add an extra byte for comma between server data.
|
||||
*/
|
||||
if (ensure_status_buf_size(status_len + len + 1) != 0)
|
||||
return -1;
|
||||
|
||||
/* comma-separate the status for each instance */
|
||||
if (status_len != 1) {
|
||||
status_buf[status_len] = ',';
|
||||
status_len++;
|
||||
}
|
||||
|
||||
/* Now copy the server status into the buffer */
|
||||
memcpy((status_buf + status_len), msg, len);
|
||||
status_len += len;
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* This tells us that we've received all the server status messages
|
||||
* so we can call the callback and then reset things for the next one.
|
||||
*/
|
||||
int handle_status_resp_done(unsigned int seqnum)
|
||||
{
|
||||
if (seqnum != status_seqnum) {
|
||||
snprintf(errorbuf, ERRORSIZE-1,
|
||||
"status resp done seqnum %u doesn't match expected %u",
|
||||
seqnum, status_seqnum);
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* Ensure we have room for list terminator otherwise give up */
|
||||
if (ensure_status_buf_size(status_len + 1) != 0)
|
||||
return -1;
|
||||
|
||||
if (status_buf) {
|
||||
/* terminate the list */
|
||||
status_buf[status_len] = ']';
|
||||
status_len++;
|
||||
|
||||
if (sg_status_msg_callback)
|
||||
sg_status_msg_callback(status_buf, status_len);
|
||||
}
|
||||
|
||||
/* reset the buffer */
|
||||
status_len = 0;
|
||||
/* bump seqnum just in case */
|
||||
status_seqnum++;
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
int dispatch_sg_msg(json_object *job_msg)
|
||||
{
|
||||
int rc = 0;
|
||||
|
||||
struct json_object *jobj_msg_type;
|
||||
if (!json_object_object_get_ex(job_msg, MSG_TYPE, &jobj_msg_type)) {
|
||||
snprintf(errorbuf, ERRORSIZE-1, "failed to parse msg_type");
|
||||
return -1;
|
||||
}
|
||||
const char *msg_type = json_object_get_string(jobj_msg_type);
|
||||
|
||||
struct json_object *jobj_data;
|
||||
const char *data;
|
||||
|
||||
// type GRP_STATUS_RESP_DONE message does not have a data field
|
||||
if (!strcmp(msg_type, GRP_BROADCAST) ||
|
||||
!strcmp(msg_type, GRP_NOTIFICATION) ||
|
||||
!strcmp(msg_type, GRP_STATUS_RESP)) {
|
||||
if (!json_object_object_get_ex(job_msg, DATA, &jobj_data)) {
|
||||
snprintf(errorbuf, ERRORSIZE-1, "failed to parse data for type %s", msg_type);
|
||||
return -1;
|
||||
}
|
||||
data = json_object_get_string(jobj_data);
|
||||
}
|
||||
|
||||
if (!strcmp(msg_type, GRP_BROADCAST)) {
|
||||
struct json_object *jobj_source_instance;
|
||||
if (!json_object_object_get_ex(job_msg, SOURCE_INSTANCE, &jobj_source_instance)) {
|
||||
snprintf(errorbuf, ERRORSIZE-1, "failed to parse source_instance for type %s", msg_type);
|
||||
return -1;
|
||||
}
|
||||
const char *source_instance = json_object_get_string(jobj_source_instance);
|
||||
|
||||
if (sg_broadcast_msg_callback)
|
||||
sg_broadcast_msg_callback((char *)source_instance, (void *)data, strlen(data));
|
||||
}
|
||||
else if (!strcmp(msg_type, GRP_NOTIFICATION)) {
|
||||
if (sg_notification_msg_callback)
|
||||
sg_notification_msg_callback((void *)data, strlen(data));
|
||||
}
|
||||
else if ((!strcmp(msg_type, GRP_STATUS_RESP)) || (!strcmp(msg_type, GRP_STATUS_RESP_DONE))) {
|
||||
struct json_object *jobj_seq;
|
||||
if (!json_object_object_get_ex(job_msg, SEQ, &jobj_seq)) {
|
||||
snprintf(errorbuf, ERRORSIZE-1, "failed to parse seq for type %s", msg_type);
|
||||
return -1;
|
||||
}
|
||||
int seq = json_object_get_int(jobj_seq);
|
||||
|
||||
if (!strcmp(msg_type, GRP_STATUS_RESP)) {
|
||||
rc = handle_status_resp(seq, data, strlen(data));
|
||||
}
|
||||
else if (!strcmp(msg_type, GRP_STATUS_RESP_DONE)) {
|
||||
rc = handle_status_resp_done(seq);
|
||||
}
|
||||
}
|
||||
else if (!strcmp(msg_type, GRP_NACK)) {
|
||||
struct json_object *jobj_log_msg;
|
||||
if (!json_object_object_get_ex(job_msg, LOG_MSG, &jobj_log_msg)) {
|
||||
snprintf(errorbuf, ERRORSIZE-1, "Nack: failed to parse log_msg");
|
||||
}
|
||||
const char *log_msg = json_object_get_string(jobj_log_msg);
|
||||
snprintf(errorbuf, ERRORSIZE-1, "Nack received, error message from host: %s", log_msg);
|
||||
return -1;
|
||||
} else {
|
||||
snprintf(errorbuf, ERRORSIZE-1, "unknown server group message type %s", msg_type);
|
||||
return -1;
|
||||
}
|
||||
return rc;
|
||||
}
|
||||
|
||||
|
||||
/* Read a message from the socket and process it. */
|
||||
int process_sg_msg()
|
||||
{
|
||||
char buf[HOST_GUEST_BUFSIZE];
|
||||
int len;
|
||||
int rc = -1;
|
||||
|
||||
len = recv(sock, buf, sizeof(buf), 0);
|
||||
if (len == -1) {
|
||||
if (errno == EAGAIN)
|
||||
return 0;
|
||||
else {
|
||||
snprintf(errorbuf, ERRORSIZE-1, "error receiving msg: %m");
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
struct json_object *jobj_msg = json_tokener_parse(buf);
|
||||
if (jobj_msg == NULL) {
|
||||
snprintf(errorbuf, ERRORSIZE-1, "failed to parse msg");
|
||||
return -1;
|
||||
}
|
||||
|
||||
// parse version
|
||||
struct json_object *jobj_version;
|
||||
if (!json_object_object_get_ex(jobj_msg, VERSION, &jobj_version)) {
|
||||
snprintf(errorbuf, ERRORSIZE-1, "failed to parse version");
|
||||
goto done;
|
||||
}
|
||||
int version = json_object_get_int(jobj_version);
|
||||
|
||||
if (version != CUR_VERSION) {
|
||||
snprintf(errorbuf, ERRORSIZE-1, "invalid version");
|
||||
goto done;
|
||||
}
|
||||
|
||||
// parse source address
|
||||
struct json_object *jobj_source_addr;
|
||||
if (!json_object_object_get_ex(jobj_msg, SOURCE_ADDR, &jobj_source_addr)) {
|
||||
snprintf(errorbuf, ERRORSIZE-1, "failed to parse source_addr");
|
||||
goto done;
|
||||
}
|
||||
const char *source_addr = json_object_get_string(jobj_source_addr);
|
||||
|
||||
/* check the host sender */
|
||||
if (strcmp(source_addr, GUEST_CLIENT_ADDR) != 0) {
|
||||
snprintf(errorbuf, ERRORSIZE-1, "unknown sender address %s", source_addr);
|
||||
goto done;
|
||||
}
|
||||
|
||||
// parse data. data is a json object that is nested inside the msg
|
||||
struct json_object *jobj_data;
|
||||
if (!json_object_object_get_ex(jobj_msg, DATA, &jobj_data)) {
|
||||
snprintf(errorbuf, ERRORSIZE-1, "failed to parse data");
|
||||
goto done;
|
||||
}
|
||||
|
||||
rc = dispatch_sg_msg(jobj_data);
|
||||
|
||||
done:
|
||||
json_object_put(jobj_msg);
|
||||
return rc;
|
||||
}
|
||||
|
||||
|
||||
/* This needs to be called first to initialize sockets, buffers,
|
||||
* callback pointers, etc.
|
||||
*/
|
||||
int init_sg(sg_broadcast_msg_handler_t broadcast_handler,
|
||||
sg_notification_msg_handler_t notification_handler,
|
||||
sg_status_msg_handler_t status_handler)
|
||||
{
|
||||
int flags;
|
||||
int addrlen;
|
||||
struct sockaddr_un cliaddr;
|
||||
|
||||
// socket for talking to guest agent
|
||||
sock = socket(AF_UNIX, SOCK_DGRAM, 0);
|
||||
if (sock == -1) {
|
||||
snprintf(errorbuf, ERRORSIZE-1, "unable to open socket: %m");
|
||||
return -1;
|
||||
}
|
||||
|
||||
flags = fcntl(sock, F_GETFL, 0);
|
||||
fcntl(sock, F_SETFL, flags | O_NONBLOCK);
|
||||
|
||||
/* our address */
|
||||
memset(&cliaddr, 0, sizeof(struct sockaddr_un));
|
||||
cliaddr.sun_family = AF_UNIX;
|
||||
cliaddr.sun_path[0] = '\0';
|
||||
strncpy(cliaddr.sun_path+1, GUEST_CLIENT_ADDR,
|
||||
sizeof(cliaddr.sun_path) - 2);
|
||||
addrlen = sizeof(sa_family_t) + strlen(GUEST_CLIENT_ADDR) + 1;
|
||||
|
||||
if (bind(sock, (struct sockaddr *) &cliaddr, addrlen) == -1) {
|
||||
snprintf(errorbuf, ERRORSIZE-1, "unable to bind socket: %m");
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* guest agent address */
|
||||
memset(&svaddr, 0, sizeof(struct sockaddr_un));
|
||||
svaddr.sun_family = AF_UNIX;
|
||||
svaddr.sun_path[0] = '\0';
|
||||
strncpy(svaddr.sun_path+1, AGENT_ADDR, sizeof(svaddr.sun_path) - 2);
|
||||
svaddrlen = sizeof(sa_family_t) + strlen(AGENT_ADDR) + 1;
|
||||
|
||||
/* set up callback pointers */
|
||||
sg_broadcast_msg_callback = broadcast_handler;
|
||||
sg_notification_msg_callback = notification_handler;
|
||||
sg_status_msg_callback = status_handler;
|
||||
|
||||
return sock;
|
||||
}
|
||||
|
||||
/* Provide access to the error message if the most recent call failed. */
|
||||
char *sg_get_error()
|
||||
{
|
||||
return errorbuf;
|
||||
}
|
@ -1,119 +0,0 @@
|
||||
/*
|
||||
* Copyright (c) 2013-2016, Wind River Systems, Inc.
|
||||
*
|
||||
* 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 above copyright notice,
|
||||
* this list of conditions and the following disclaimer.
|
||||
*
|
||||
* 2) Redistributions in binary form must reproduce the above copyright notice,
|
||||
* this list of conditions and the following disclaimer in the documentation and/or
|
||||
* other materials provided with the distribution.
|
||||
*
|
||||
* 3) Neither the name of Wind River Systems nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software without specific
|
||||
* prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER OR CONTRIBUTORS 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.
|
||||
*/
|
||||
|
||||
/**
|
||||
*/
|
||||
|
||||
#ifndef GUEST_CLIENT_H
|
||||
#define GUEST_CLIENT_H
|
||||
|
||||
// keys for server group messages
|
||||
#define VERSION "version"
|
||||
#define MSG_TYPE "msg_type"
|
||||
#define SEQ "seq"
|
||||
#define SOURCE_INSTANCE "source_instance"
|
||||
#define DATA "data"
|
||||
#define LOG_MSG "log_msg"
|
||||
|
||||
/* This implements a library for server group messaging.
|
||||
*
|
||||
* The general idea is that everything that goes through this is multiplexed
|
||||
* over a single unix socket so that the guest app only needs to monitor one
|
||||
* socket for activity.
|
||||
*
|
||||
* This has not been tested for safe use in multithreaded applications.
|
||||
*/
|
||||
|
||||
|
||||
/* Function signature for the server group broadcast messaging callback function.
|
||||
* source_instance is a null-terminated string of the form "instance-xxxxxxxx".
|
||||
* The message contents are entirely up to the sender of the message.
|
||||
*/
|
||||
typedef void (*sg_broadcast_msg_handler_t)(char *source_instance, void *msg,
|
||||
unsigned short msglen);
|
||||
|
||||
/* Function signature for the server group notification callback function. The
|
||||
* message is basically the notification as sent out by nova with some information
|
||||
* removed as not relevant. The message is not null-terminated, though it is
|
||||
* a JSON representation of a python dictionary.
|
||||
*/
|
||||
typedef void (*sg_notification_msg_handler_t)(void *msg, unsigned short msglen);
|
||||
|
||||
/* Function signature for the server group status callback function. The
|
||||
* message is a JSON representation of a list of dictionaries, each of which
|
||||
* corresponds to a single server. The message is not null-terminated.
|
||||
*/
|
||||
typedef void (*sg_status_msg_handler_t)(void *msg, unsigned short msglen);
|
||||
|
||||
|
||||
|
||||
/* Get error message from most recent library call that returned an error. */
|
||||
char *sg_get_error();
|
||||
|
||||
/* Allocate socket, set up callbacks, etc. This must be called once before
|
||||
* any other API calls.
|
||||
*
|
||||
* Returns a socket that must be monitored for activity using select/poll/etc.
|
||||
* A negative return value indicates an error of some kind.
|
||||
*/
|
||||
int init_sg(sg_broadcast_msg_handler_t broadcast_handler,
|
||||
sg_notification_msg_handler_t notification_handler,
|
||||
sg_status_msg_handler_t status_handler);
|
||||
|
||||
/* This should be called when the socket becomes readable. This may result in
|
||||
* callbacks being called. Returns 0 on success.
|
||||
* A negative return value indicates an error of some kind.
|
||||
*/
|
||||
int process_sg_msg();
|
||||
|
||||
/* max msg length for a broadcast message */
|
||||
#define MAX_MSG_DATA_LEN 3050
|
||||
|
||||
/* Send a server group broadcast message. Returns 0 on success.
|
||||
* A negative return value indicates an error of some kind.
|
||||
* The message must be a null-terminated string without embedded newlines.
|
||||
* len is no longer used.
|
||||
*/
|
||||
int sg_msg_broadcast(void *msg, unsigned int len);
|
||||
|
||||
/* Request a status update for all servers in the group.
|
||||
* Returns 0 if the request was successfully sent.
|
||||
* A negative return value indicates an error of some kind.
|
||||
*
|
||||
* A successful response will cause the status_handler callback
|
||||
* to be called.
|
||||
*
|
||||
* If a status update has been requested but the callback has not yet
|
||||
* been called this may result in the previous request being cancelled.
|
||||
*/
|
||||
int sg_request_status();
|
||||
|
||||
|
||||
#endif
|
||||
|
@ -1,107 +0,0 @@
|
||||
/*
|
||||
* Copyright (c) 2013-2016, Wind River Systems, Inc.
|
||||
*
|
||||
* 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 above copyright notice,
|
||||
* this list of conditions and the following disclaimer.
|
||||
*
|
||||
* 2) Redistributions in binary form must reproduce the above copyright notice,
|
||||
* this list of conditions and the following disclaimer in the documentation and/or
|
||||
* other materials provided with the distribution.
|
||||
*
|
||||
* 3) Neither the name of Wind River Systems nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software without specific
|
||||
* prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER OR CONTRIBUTORS 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.
|
||||
*/
|
||||
|
||||
/**
|
||||
*/
|
||||
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <sys/select.h>
|
||||
|
||||
#include "server_group.h"
|
||||
|
||||
|
||||
void sg_broadcast_msg_handler(char *source_instance, void *msg,
|
||||
unsigned short msglen)
|
||||
{
|
||||
printf("got server group broadcast msg: len: %d, sinstance: %.20s, msg: %.*s\n\n",
|
||||
msglen, source_instance, msglen, (char *)msg);
|
||||
}
|
||||
|
||||
void sg_notification_msg_handler(void *msg, unsigned short msglen)
|
||||
{
|
||||
printf("got server group notification msg: %.*s\n\n",
|
||||
msglen, (char *)msg);
|
||||
}
|
||||
|
||||
void sg_status_msg_handler(void *msg, unsigned short msglen)
|
||||
{
|
||||
printf("got server group status response msg: %.*s\n\n",
|
||||
msglen, (char *)msg);
|
||||
}
|
||||
|
||||
int main(int argc, char **argv)
|
||||
{
|
||||
int nfds;
|
||||
int rc;
|
||||
fd_set rfds;
|
||||
// socket for guest client library
|
||||
int sock = init_sg(sg_broadcast_msg_handler,
|
||||
sg_notification_msg_handler,
|
||||
sg_status_msg_handler);
|
||||
if (sock < 0) {
|
||||
printf("error initializing library: %s\n", sg_get_error());
|
||||
exit(-1);
|
||||
}
|
||||
nfds=sock+1;
|
||||
FD_ZERO(&rfds);
|
||||
FD_SET(sock, &rfds);
|
||||
|
||||
if (argc == 2) {
|
||||
rc = sg_msg_broadcast(argv[1], strlen(argv[1])+1);
|
||||
if (rc != 0) {
|
||||
printf("problem sending broadcast: %s\n", sg_get_error());
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
rc = sg_request_status();
|
||||
if (rc != 0) {
|
||||
printf("problem requesting status: %s\n", sg_get_error());
|
||||
return -1;
|
||||
}
|
||||
|
||||
while(1) {
|
||||
int retval;
|
||||
fd_set tmpfds = rfds;
|
||||
retval = select(nfds, &tmpfds, NULL, NULL, NULL);
|
||||
|
||||
if (retval > 0) {
|
||||
rc = process_sg_msg();
|
||||
if (rc < 0) {
|
||||
printf("problem processing incoming msg: %s\n", sg_get_error());
|
||||
}
|
||||
} else if (retval == -1)
|
||||
perror("select()");
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
@ -1,175 +0,0 @@
|
||||
/*
|
||||
* Copyright (c) 2013-2016, Wind River Systems, Inc.
|
||||
*
|
||||
* 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 above copyright notice,
|
||||
* this list of conditions and the following disclaimer.
|
||||
*
|
||||
* 2) Redistributions in binary form must reproduce the above copyright notice,
|
||||
* this list of conditions and the following disclaimer in the documentation and/or
|
||||
* other materials provided with the distribution.
|
||||
*
|
||||
* 3) Neither the name of Wind River Systems nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software without specific
|
||||
* prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER OR CONTRIBUTORS 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.
|
||||
*/
|
||||
|
||||
/**
|
||||
build: gcc -I../ -o guest_app guest_app.c -ljson-c
|
||||
*/
|
||||
|
||||
#include <stddef.h>
|
||||
#include <errno.h>
|
||||
#include <error.h>
|
||||
#include <fcntl.h>
|
||||
#include <poll.h>
|
||||
#include <pthread.h>
|
||||
#include <stdbool.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <stdint.h>
|
||||
#include <string.h>
|
||||
#include <unistd.h>
|
||||
#include <sys/stat.h>
|
||||
#include <sys/types.h>
|
||||
#include <sys/wait.h>
|
||||
#include <sys/select.h>
|
||||
#include <sys/un.h>
|
||||
#include <sys/socket.h>
|
||||
#include <json-c/json.h>
|
||||
#include "host_guest_msg_type.h"
|
||||
|
||||
struct json_object *create_new_jobj_data()
|
||||
{
|
||||
struct json_object *jobj_data = json_object_new_object();
|
||||
if (jobj_data == NULL) {
|
||||
printf("failed to allocate json object for data\n");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
json_object_object_add(jobj_data, VERSION, json_object_new_int(CUR_VERSION));
|
||||
json_object_object_add(jobj_data, "resource", json_object_new_string("cpu"));
|
||||
json_object_object_add(jobj_data, "direction", json_object_new_string("down"));
|
||||
return jobj_data;
|
||||
}
|
||||
|
||||
// create app to daemon msg
|
||||
const char *create_outmsg(int msg_count)
|
||||
{
|
||||
struct json_object *jobj_msg = json_object_new_object();
|
||||
if (jobj_msg == NULL) {
|
||||
printf("failed to allocate json object for msg\n");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
json_object_object_add(jobj_msg, VERSION, json_object_new_int(CUR_VERSION));
|
||||
json_object_object_add(jobj_msg, DEST_ADDR, json_object_new_string("h_scale_agent"));
|
||||
json_object_object_add(jobj_msg, "msg_count", json_object_new_int(msg_count));
|
||||
|
||||
struct json_object *jobj_data = create_new_jobj_data();
|
||||
if (jobj_data == NULL) {
|
||||
json_object_put(jobj_msg);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
json_object_object_add(jobj_msg, DATA, create_new_jobj_data());
|
||||
const char *msg = json_object_to_json_string_ext(jobj_msg, JSON_C_TO_STRING_PLAIN);
|
||||
return msg;
|
||||
}
|
||||
|
||||
// create daemon to app msg
|
||||
const char *create_inmsg()
|
||||
{
|
||||
struct json_object *jobj_msg = json_object_new_object();
|
||||
if (jobj_msg == NULL) {
|
||||
printf("failed to allocate json object for msg\n");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
json_object_object_add(jobj_msg, VERSION, json_object_new_int(CUR_VERSION));
|
||||
json_object_object_add(jobj_msg, SOURCE_ADDR, json_object_new_string("h_scale_agent"));
|
||||
|
||||
struct json_object *jobj_data = create_new_jobj_data();
|
||||
if (jobj_data == NULL) {
|
||||
json_object_put(jobj_msg);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
json_object_object_add(jobj_msg, DATA, create_new_jobj_data());
|
||||
const char *msg = json_object_to_json_string_ext(jobj_msg, JSON_C_TO_STRING_PLAIN);
|
||||
return msg;
|
||||
}
|
||||
|
||||
int main()
|
||||
{
|
||||
char buf[4096];
|
||||
int len;
|
||||
struct sockaddr_un cliaddr, srvaddr;
|
||||
int rc;
|
||||
|
||||
// set up socket for talking to host agent
|
||||
int fd = socket(AF_UNIX, SOCK_DGRAM, 0);
|
||||
if (fd == -1) {
|
||||
perror("socket");
|
||||
exit(-1);
|
||||
}
|
||||
|
||||
memset(&cliaddr, 0, sizeof(struct sockaddr_un));
|
||||
cliaddr.sun_family = AF_UNIX;
|
||||
cliaddr.sun_path[0] = '\0';
|
||||
strncpy(cliaddr.sun_path+1, "g_scale_agent", sizeof(cliaddr.sun_path) - 2);
|
||||
|
||||
if (bind(fd, (struct sockaddr *) &cliaddr, sizeof(struct sockaddr_un)) == -1) {
|
||||
perror("bind");
|
||||
exit(-1);
|
||||
}
|
||||
|
||||
/* Construct address of server */
|
||||
memset(&srvaddr, 0, sizeof(struct sockaddr_un));
|
||||
srvaddr.sun_family = AF_UNIX;
|
||||
srvaddr.sun_path[0] = '\0';
|
||||
strncpy(srvaddr.sun_path+1, AGENT_ADDR, sizeof(srvaddr.sun_path) - 2);
|
||||
|
||||
const char* inmsg = create_inmsg();
|
||||
const char* outmsg = create_outmsg(1);
|
||||
len = strlen(outmsg);
|
||||
rc = sendto(fd, outmsg, len, 0, (struct sockaddr *) &srvaddr,
|
||||
sizeof(struct sockaddr_un));
|
||||
if (rc != len) {
|
||||
perror("sendto");
|
||||
exit(-1);
|
||||
}
|
||||
outmsg = create_outmsg(2);
|
||||
len = strlen(outmsg);
|
||||
rc = sendto(fd, outmsg, len, 0, (struct sockaddr *) &srvaddr,
|
||||
sizeof(struct sockaddr_un));
|
||||
if (rc != len) {
|
||||
perror("sendto");
|
||||
exit(-1);
|
||||
}
|
||||
|
||||
while (1) {
|
||||
len = recv(fd, buf, sizeof(buf), 0);
|
||||
if (len == -1) {
|
||||
perror("recvfrom");
|
||||
exit(-1);
|
||||
}
|
||||
printf("Msg from host: %s\n", buf);
|
||||
fflush(0);
|
||||
}
|
||||
}
|
||||
|
||||
|
@ -1,187 +0,0 @@
|
||||
/*
|
||||
* Copyright (c) 2013-2016, Wind River Systems, Inc.
|
||||
*
|
||||
* 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 above copyright notice,
|
||||
* this list of conditions and the following disclaimer.
|
||||
*
|
||||
* 2) Redistributions in binary form must reproduce the above copyright notice,
|
||||
* this list of conditions and the following disclaimer in the documentation and/or
|
||||
* other materials provided with the distribution.
|
||||
*
|
||||
* 3) Neither the name of Wind River Systems nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software without specific
|
||||
* prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER OR CONTRIBUTORS 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.
|
||||
*/
|
||||
|
||||
/**
|
||||
build: gcc -I../ -o host_app host_app.c -ljson-c
|
||||
*/
|
||||
|
||||
#include <stddef.h>
|
||||
#include <errno.h>
|
||||
#include <error.h>
|
||||
#include <fcntl.h>
|
||||
#include <poll.h>
|
||||
#include <pthread.h>
|
||||
#include <stdbool.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <stdint.h>
|
||||
#include <string.h>
|
||||
#include <unistd.h>
|
||||
#include <sys/stat.h>
|
||||
#include <sys/types.h>
|
||||
#include <sys/wait.h>
|
||||
#include <sys/select.h>
|
||||
#include <sys/un.h>
|
||||
#include <sys/socket.h>
|
||||
#include <json-c/json.h>
|
||||
|
||||
#include "host_guest_msg_type.h"
|
||||
|
||||
struct json_object *create_new_jobj_data()
|
||||
{
|
||||
struct json_object *jobj_data = json_object_new_object();
|
||||
if (jobj_data == NULL) {
|
||||
printf("failed to allocate json object for data\n");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
json_object_object_add(jobj_data, VERSION, json_object_new_int(CUR_VERSION));
|
||||
json_object_object_add(jobj_data, "resource", json_object_new_string("cpu"));
|
||||
json_object_object_add(jobj_data, "direction", json_object_new_string("down"));
|
||||
return jobj_data;
|
||||
}
|
||||
|
||||
// create app to daemon msg
|
||||
const char *create_outmsg(int msg_count, const char *dest_instance)
|
||||
{
|
||||
struct json_object *jobj_msg = json_object_new_object();
|
||||
if (jobj_msg == NULL) {
|
||||
printf("failed to allocate json object for msg\n");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
json_object_object_add(jobj_msg, VERSION, json_object_new_int(CUR_VERSION));
|
||||
json_object_object_add(jobj_msg, DEST_ADDR, json_object_new_string("g_scale_agent"));
|
||||
json_object_object_add(jobj_msg, DEST_INSTANCE, json_object_new_string(dest_instance));
|
||||
json_object_object_add(jobj_msg, "msg_count", json_object_new_int(msg_count));
|
||||
|
||||
struct json_object *jobj_data = create_new_jobj_data();
|
||||
if (jobj_data == NULL) {
|
||||
json_object_put(jobj_msg);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
json_object_object_add(jobj_msg, DATA, create_new_jobj_data());
|
||||
const char *msg = json_object_to_json_string_ext(jobj_msg, JSON_C_TO_STRING_PLAIN);
|
||||
return msg;
|
||||
}
|
||||
|
||||
// create daemon to app msg
|
||||
const char *create_inmsg()
|
||||
{
|
||||
struct json_object *jobj_msg = json_object_new_object();
|
||||
if (jobj_msg == NULL) {
|
||||
printf("failed to allocate json object for msg\n");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
json_object_object_add(jobj_msg, VERSION, json_object_new_int(CUR_VERSION));
|
||||
json_object_object_add(jobj_msg, SOURCE_ADDR, json_object_new_string("h_scale_agent"));
|
||||
|
||||
struct json_object *jobj_data = create_new_jobj_data();
|
||||
if (jobj_data == NULL) {
|
||||
json_object_put(jobj_msg);
|
||||
return NULL;
|
||||
}
|
||||
|
||||
json_object_object_add(jobj_msg, DATA, create_new_jobj_data());
|
||||
const char *msg = json_object_to_json_string_ext(jobj_msg, JSON_C_TO_STRING_PLAIN);
|
||||
return msg;
|
||||
}
|
||||
|
||||
//argv[1] should be the instance name
|
||||
int main(int argc, char **argv)
|
||||
{
|
||||
char buf[4096];
|
||||
int len;
|
||||
struct sockaddr_un cliaddr, srvaddr;
|
||||
int rc;
|
||||
|
||||
if (argc != 2) {
|
||||
printf("call with instance name as arg\n");
|
||||
exit(1);
|
||||
}
|
||||
|
||||
// set up socket for talking to host agent
|
||||
int fd = socket(AF_UNIX, SOCK_DGRAM, 0);
|
||||
if (fd == -1) {
|
||||
perror("socket");
|
||||
exit(-1);
|
||||
}
|
||||
|
||||
memset(&cliaddr, 0, sizeof(struct sockaddr_un));
|
||||
cliaddr.sun_family = AF_UNIX;
|
||||
cliaddr.sun_path[0] = '\0';
|
||||
strncpy(cliaddr.sun_path+1, "h_scale_agent", sizeof(cliaddr.sun_path) - 2);
|
||||
|
||||
if (bind(fd, (struct sockaddr *) &cliaddr, sizeof(struct sockaddr_un)) == -1) {
|
||||
perror("bind");
|
||||
exit(-1);
|
||||
}
|
||||
|
||||
/* Construct address of server */
|
||||
memset(&srvaddr, 0, sizeof(struct sockaddr_un));
|
||||
srvaddr.sun_family = AF_UNIX;
|
||||
srvaddr.sun_path[0] = '\0';
|
||||
strncpy(srvaddr.sun_path+1, AGENT_ADDR, sizeof(srvaddr.sun_path) - 2);
|
||||
|
||||
const char* inmsg = create_inmsg();
|
||||
|
||||
// pass argv[1] as dest_instance
|
||||
const char* outmsg = create_outmsg(1, argv[1]);
|
||||
len = strlen(outmsg);
|
||||
|
||||
rc = sendto(fd, outmsg, len, 0, (struct sockaddr *) &srvaddr,
|
||||
sizeof(struct sockaddr_un));
|
||||
if (rc != len) {
|
||||
perror("sendto");
|
||||
exit(-1);
|
||||
}
|
||||
|
||||
outmsg = create_outmsg(2, argv[1]);
|
||||
len = strlen(outmsg);
|
||||
rc = sendto(fd, outmsg, len, 0, (struct sockaddr *) &srvaddr,
|
||||
sizeof(struct sockaddr_un));
|
||||
if (rc != len) {
|
||||
perror("sendto");
|
||||
exit(-1);
|
||||
}
|
||||
|
||||
while (1) {
|
||||
len = recv(fd, buf, sizeof(buf), 0);
|
||||
if (len == -1) {
|
||||
perror("recvfrom");
|
||||
exit(-1);
|
||||
}
|
||||
printf("Msg from instance %s\n", buf);
|
||||
fflush(0);
|
||||
}
|
||||
}
|
||||
|
||||
|
@ -1,374 +0,0 @@
|
||||
/*
|
||||
* Copyright (c) 2013-2016, Wind River Systems, Inc.
|
||||
*
|
||||
* 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 above copyright notice,
|
||||
* this list of conditions and the following disclaimer.
|
||||
*
|
||||
* 2) Redistributions in binary form must reproduce the above copyright notice,
|
||||
* this list of conditions and the following disclaimer in the documentation and/or
|
||||
* other materials provided with the distribution.
|
||||
*
|
||||
* 3) Neither the name of Wind River Systems nor the names of its contributors may be
|
||||
* used to endorse or promote products derived from this software without specific
|
||||
* prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER OR CONTRIBUTORS 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.
|
||||
*/
|
||||
|
||||
/**
|
||||
This file is used to test functions in file host_guest_msg.c.
|
||||
Functions under test are directly copied to here to simplify compile.
|
||||
Once tested and refactored, the functions can be copied back to their
|
||||
original location with appropriate debug traces.
|
||||
|
||||
build: gcc -I. -o test_host_guest_msg test_host_guest_msg.c -ljson-c
|
||||
|
||||
usage: binary can be executed directly on a linux desktop.
|
||||
./test_host_guest_msg - run without parameters to check TCs PASS or FAIL
|
||||
./test_host_guest_msg 1 - show error logs
|
||||
./test_host_guest_msg 2 - show error and debug logs
|
||||
*/
|
||||
|
||||
#include <stddef.h>
|
||||
#include <errno.h>
|
||||
#include <error.h>
|
||||
#include <fcntl.h>
|
||||
#include <poll.h>
|
||||
#include <pthread.h>
|
||||
#include <stdbool.h>
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <stdint.h>
|
||||
#include <string.h>
|
||||
#include <unistd.h>
|
||||
#include <sys/stat.h>
|
||||
#include <sys/types.h>
|
||||
#include <sys/wait.h>
|
||||
#include <sys/select.h>
|
||||
#include <sys/un.h>
|
||||
#include <json-c/json.h>
|
||||
|
||||
//number of guest
|
||||
#define NUM_GUEST 3
|
||||
|
||||
//number of reads
|
||||
#define NUM_READS 3
|
||||
|
||||
int debug = 0;
|
||||
#define PRINT_ERR(format, ...) if(debug >= 1) printf(format, ##__VA_ARGS__)
|
||||
#define PRINT_DEBUG(format, ...) if(debug >= 2) printf(format, ##__VA_ARGS__)
|
||||
|
||||
// One tokener for each instance connection serve as reassembly buffer
|
||||
struct json_tokener* tok[NUM_GUEST];
|
||||
void process_msg(json_object *jobj_msg, int fd);
|
||||
|
||||
//----------------------------------------------------------
|
||||
// Functions Under Test
|
||||
//----------------------------------------------------------
|
||||
void parser(void *buf, ssize_t len, int fd, json_tokener* tok, int newline_found)
|
||||
{
|
||||
PRINT_DEBUG("parser: len=%lu, buf=%s\n", len, (char *)buf);
|
||||
|
||||
json_object *jobj = json_tokener_parse_ex(tok, buf, len);
|
||||
enum json_tokener_error jerr = json_tokener_get_error(tok);
|
||||
|
||||
if (jerr == json_tokener_success) {
|
||||
process_msg(jobj, fd);
|
||||
json_object_put(jobj);
|
||||
return;
|
||||
}
|
||||
|
||||
else if (jerr == json_tokener_continue) {
|
||||
// partial JSON is parsed , continue to read from socket
|
||||
PRINT_DEBUG("partial message parsed, continue read socket\n");
|
||||
PRINT_DEBUG("processed so far buf=%s\n", (char *)buf);
|
||||
|
||||
// if newline was found in the middle of the buffer, the message should
|
||||
// be completed at this point. Throw out incomplete message by resetting
|
||||
// tokener.
|
||||
if (newline_found) {
|
||||
PRINT_DEBUG("newline_found. throw out the partial message\n");
|
||||
json_tokener_reset(tok);
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
PRINT_ERR("JSON Parsing Error: %s\n", json_tokener_error_desc(jerr));
|
||||
json_tokener_reset(tok);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
//----------------------------------------------------------
|
||||
// Functions Under Test
|
||||
//----------------------------------------------------------
|
||||
void handle_virtio_serial_msg(void *buf, ssize_t len, int fd, json_tokener* tok)
|
||||
{
|
||||
void *origbuf = buf;
|
||||
void *newline;
|
||||
|
||||
ssize_t len_head;
|
||||
|
||||
next:
|
||||
if (len == 0)
|
||||
return;
|
||||
|
||||
PRINT_DEBUG("analyzing buffer at offset %lu, len %zd\n", buf-origbuf, len);
|
||||
|
||||
// search for newline as delimiter
|
||||
newline = memchr(buf, '\n', len);
|
||||
|
||||
if (newline) {
|
||||
PRINT_DEBUG("found newline start at offset %lu\n", newline - origbuf);
|
||||
|
||||
// split buffer to head and tail at the location of newline.
|
||||
// feed the head to the parser and recursively process the tail.
|
||||
len_head = newline-buf;
|
||||
|
||||
// parse head
|
||||
if (len_head > 0)
|
||||
parser(buf, len_head, fd, tok, 1);
|
||||
|
||||
// start of the tail: skip newline
|
||||
buf += len_head+1;
|
||||
// length of the tail: deduct 1 for the newline character
|
||||
len -= len_head+1;
|
||||
// continue to process the tail.
|
||||
goto next;
|
||||
}
|
||||
else {
|
||||
parser(buf, len, fd, tok, 0);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
// buffer to simulate socket to read, one socket per guest
|
||||
void *socket[NUM_GUEST][NUM_READS];
|
||||
|
||||
// resulting parsed socket
|
||||
char socket_processed[NUM_GUEST][NUM_READS][500];
|
||||
|
||||
// expected result
|
||||
char *socket_expected[NUM_GUEST][NUM_READS];
|
||||
|
||||
// track current buffer being processed for particular guest
|
||||
int current_processed[NUM_GUEST];
|
||||
|
||||
void free_tok()
|
||||
{
|
||||
int fd;
|
||||
for (fd=0; fd<NUM_GUEST; fd++) {
|
||||
if (tok[fd])
|
||||
free(tok[fd]);
|
||||
tok[fd] = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
// populate socket with contents
|
||||
void init_socket_result()
|
||||
{
|
||||
socket_expected[0][0] = "{\"name\":\"guest0\",\"seq\":1,\"data\":{\"secret\":101}}";
|
||||
socket_expected[0][1] = "{\"name\":\"guest0\",\"seq\":2,\"data\":{\"secret\":102}}";
|
||||
socket_expected[0][2] = "{\"name\":\"guest0\",\"seq\":3,\"data\":{\"secret\":103}}";
|
||||
|
||||
socket_expected[1][0] = "{\"name\":\"guest1\",\"seq\":1,\"data\":{\"secret\":201}}";
|
||||
socket_expected[1][1] = "{\"name\":\"guest1\",\"seq\":2,\"data\":{\"secret\":202}}";
|
||||
socket_expected[1][2] = "{\"name\":\"guest1\",\"seq\":3,\"data\":{\"secret\":203}}";
|
||||
|
||||
socket_expected[2][0] = "{\"name\":\"guest2\",\"seq\":1,\"data\":{\"secret\":301}}";
|
||||
socket_expected[2][1] = "{\"name\":\"guest2\",\"seq\":2,\"data\":{\"secret\":302}}";
|
||||
socket_expected[2][2] = "{\"name\":\"guest2\",\"seq\":3,\"data\":{\"secret\":303}}";
|
||||
}
|
||||
|
||||
void setup_test()
|
||||
{
|
||||
int fd;
|
||||
for (fd=0; fd<NUM_GUEST; fd++) {
|
||||
tok[fd] = json_tokener_new();
|
||||
current_processed[fd] = 0;
|
||||
}
|
||||
init_socket_result();
|
||||
}
|
||||
|
||||
|
||||
void reset_results()
|
||||
{
|
||||
int fd, read;
|
||||
for(fd=0;fd<NUM_GUEST;fd++) {
|
||||
for (read = 0; read <NUM_READS; read++) {
|
||||
strcpy(socket_processed[fd][read], "\0");
|
||||
}
|
||||
current_processed[fd] = 0;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
// populate socket with contents
|
||||
void init_socket_tc1()
|
||||
{
|
||||
reset_results();
|
||||
socket[0][0] = "\n{\"name\":\"guest0\",\"seq\":1,\"data\":{\"secret\":101}}\n";
|
||||
socket[0][1] = "\n{\"name\":\"guest0\",\"seq\":2,\"data\":{\"secret\":102}}\n";
|
||||
socket[0][2] = "\n{\"name\":\"guest0\",\"seq\":3,\"data\":{\"secret\":103}}\n";
|
||||
|
||||
socket[1][0] = "\n{\"name\":\"guest1\",\"seq\":1,\"data\":{\"secret\":201}}\n";
|
||||
socket[1][1] = "\n{\"name\":\"guest1\",\"seq\":2,\"data\":{\"secret\":202}}\n";
|
||||
socket[1][2] = "\n{\"name\":\"guest1\",\"seq\":3,\"data\":{\"secret\":203}}\n";
|
||||
|
||||
socket[2][0] = "\n{\"name\":\"guest2\",\"seq\":1,\"data\":{\"secret\":301}}\n";
|
||||
socket[2][1] = "\n{\"name\":\"guest2\",\"seq\":2,\"data\":{\"secret\":302}}\n";
|
||||
socket[2][2] = "\n{\"name\":\"guest2\",\"seq\":3,\"data\":{\"secret\":303}}\n";
|
||||
}
|
||||
|
||||
void init_socket_tc2()
|
||||
{
|
||||
reset_results();
|
||||
socket[0][0] = "\n{\"name\":\n{\"name\":\"guest0\",\"seq\":1,\"data\":{\"secret\":101}";
|
||||
socket[0][1] = "}\n\n{\"name\":\"guest0\",\"seq\":2,\"data\":{\"secret\":102}}\n";
|
||||
socket[0][2] = "\n{\"name\":\"guest0\",\"seq\":3,\"data\":{\"secret\":103}}\n";
|
||||
|
||||
socket[1][0] = "\n";
|
||||
socket[1][1] = "{\"name\":\"guest1\",\"seq\":1,\"data\":{\"secret\":201}}";
|
||||
socket[1][2] = "\n\n{\"name\":\"guest1\",\"seq\":2,\"data\":{\"secret\":202}}\n\n{\"name\":\"guest1\",\"seq\":3,\"data\":{\"secret\":203}}\n";
|
||||
|
||||
socket[2][0] = "\n{\"name\":\"guest2\",\"seq\":1,\"data\":{\"secret\":301}";
|
||||
socket[2][1] = "}\n\n{\"name\":\"guest2\",\"seq\":2,\"data\":{\"secret\":302";
|
||||
socket[2][2] = "}}\n\n{\"name\":\"guest2\",\"seq\":3,\"data\":{\"secret\":303}}\n";
|
||||
|
||||
}
|
||||
|
||||
// insert garbage characters
|
||||
void init_socket_tc3()
|
||||
{
|
||||
reset_results();
|
||||
socket[0][0] = "\n{\"name\":\"guest0\",\"s";
|
||||
socket[0][1] = "eq\":1,\"data\":{\"secret\":101}}\\nJHgB\7b4\\sx34xbb\n{\"name\":\"guest0\",\"seq\":2,\"data\":{\"secret\":102}}\n7b4x34";
|
||||
socket[0][2] = "\n{\"name\":\"guest0\",\"seq\":3,\"data\":{\"secret\":103}}\n";
|
||||
|
||||
socket[1][0] = "\n{\"name\":\"guest1\",\"seq\":1,\"data\":{\"secret\":201}}\n7x4\xa}}{{\n{\"name\":";
|
||||
socket[1][1] = "\"guest1\",\"seq\":2,\"data\":{\"secret\"";
|
||||
socket[1][2] = ":202}}}} \n\n{\"name\":\"guest1\",\"seq\":3,\"data\":{\"secret\":203}}\n";
|
||||
|
||||
socket[2][0] = "\n{\"name\":\"guest2\",\"seq\":1,\"data\":{\"secret\":301}";
|
||||
socket[2][1] = "}\n\n*&*&*&\n{\"name\":\"guest2\",\"seq\":2,\"data\":{\"secret\":302";
|
||||
socket[2][2] = "}}\n\n{\"name\":\"guest2\",\"seq\":3,\"data\":{\"secret\":303}}%%$%#$%#$%\n";
|
||||
}
|
||||
|
||||
|
||||
void init_socket_tc4()
|
||||
{
|
||||
reset_results();
|
||||
socket[0][0] = "\n{\"name\":\"guest0\",\"seq\":1,\"data\":{\"secret\":101}}\n\n{\"name\":\"guest0\",\"seq\":2,\"data\":{\"secret\":102}}\n*^*&%^*{{%$\n{\"name\":\"guest0\",\"seq\":3,\"data\":{\"secret\":103}}\n";
|
||||
socket[0][1] = "\n";
|
||||
socket[0][2] = "\n{\"name\":\n";
|
||||
|
||||
socket[1][0] = "\n{\"name\":\"guest1\",\"seq\":1,\"data\":{\"secret\":201}}\n\n{\"name\":\"guest1\",\"seq\":2,\"data\":";
|
||||
socket[1][1] = "{\"secret\":202}}\n\n{\"name\":\"guest1\",\"seq\":";
|
||||
socket[1][2] = "3,\"data\":{\"secret\":203}}\n";
|
||||
|
||||
socket[2][0] = "\n{\"name\":\"guest2\",\"seq\":1,\"data\"";
|
||||
socket[2][1] = ":{\"secret\":301}}\n\n{\"name\":\"guest2\",\"seq\":2,\"data\":{\"secret\":302}}\n\n{\"name\":\"guest2\",\"seq\":3,\"data\":{\"secret\"";
|
||||
socket[2][2] = ":303}}\n";
|
||||
}
|
||||
|
||||
|
||||
void check_results()
|
||||
{
|
||||
int fd, read;
|
||||
for(fd=0;fd<NUM_GUEST;fd++) {
|
||||
for (read = 0; read <NUM_READS; read++) {
|
||||
if (strcmp(socket_processed[fd][read], socket_expected[fd][read])!= 0 ) {
|
||||
printf("FAIL\n guest %d read %d not correct:\n expect=%s\n actual=%s\n", fd, read, socket_expected[fd][read], socket_processed[fd][read]);
|
||||
return;
|
||||
}
|
||||
}
|
||||
}
|
||||
printf("PASS\n");
|
||||
}
|
||||
|
||||
|
||||
void process_msg(json_object *jobj_msg, int fd)
|
||||
{
|
||||
const char *msg = json_object_to_json_string_ext(jobj_msg, JSON_C_TO_STRING_PLAIN);
|
||||
if (msg[0]!='{'){
|
||||
PRINT_DEBUG("*********throw out processed msg*********** %s\n", msg);
|
||||
return;
|
||||
}
|
||||
PRINT_DEBUG("successfully processed guest=%d, read=%d, msg=%s\n", fd, current_processed[fd], msg);
|
||||
strcpy (socket_processed[fd][current_processed[fd]], msg);
|
||||
current_processed[fd]++;
|
||||
}
|
||||
|
||||
void scan_guest_fd(int fd, int read)
|
||||
{
|
||||
char *buf;
|
||||
|
||||
// read from socket for guest fd
|
||||
buf = socket[fd][read];
|
||||
PRINT_DEBUG("handling guest=%d, read=%d, buf=%s\n", fd, read, buf);
|
||||
handle_virtio_serial_msg(buf, strlen(buf), fd, tok[fd]);
|
||||
}
|
||||
|
||||
|
||||
int main(int argc, char **argv)
|
||||
{
|
||||
int read;
|
||||
int fd;
|
||||
|
||||
if (argc > 1)
|
||||
debug = atoi(argv[1]);
|
||||
|
||||
setup_test();
|
||||
|
||||
printf("\n===== TC1 one valid message per read: ");
|
||||
init_socket_tc1();
|
||||
for (read = 0; read <NUM_READS; read++) {
|
||||
for(fd=0;fd<NUM_GUEST;fd++) {
|
||||
scan_guest_fd(fd, read);
|
||||
}
|
||||
}
|
||||
check_results();
|
||||
|
||||
printf("\n===== TC2 partial messages: ");
|
||||
init_socket_tc2();
|
||||
for (read = 0; read <NUM_READS; read++) {
|
||||
for(fd=0;fd<NUM_GUEST;fd++) {
|
||||
scan_guest_fd(fd, read);
|
||||
}
|
||||
}
|
||||
check_results();
|
||||
|
||||
printf("\n===== TC3 garbage in between messages: ");
|
||||
init_socket_tc3();
|
||||
for (read = 0; read <NUM_READS; read++) {
|
||||
for(fd=0;fd<NUM_GUEST;fd++) {
|
||||
scan_guest_fd(fd, read);
|
||||
}
|
||||
}
|
||||
check_results();
|
||||
|
||||
printf("\n===== TC4 multiple messages: ");
|
||||
init_socket_tc4();
|
||||
for (read = 0; read <NUM_READS; read++) {
|
||||
for(fd=0;fd<NUM_GUEST;fd++) {
|
||||
scan_guest_fd(fd, read);
|
||||
}
|
||||
}
|
||||
check_results();
|
||||
|
||||
free_tok();
|
||||
return 0;
|
||||
}
|
Loading…
Reference in New Issue
Block a user