Implement systemd socket activation on the CLIF socket.
Signed-off-by: Hannes Reinecke <[email protected]>
---
Makefile.am | 2 +-
etc/systemd/fcoe.service | 3 ++-
etc/systemd/fcoemon.socket | 6 ++++++
fcoemon.c | 44 +++++++++++++++++++++++++++++++++++++++++++-
4 files changed, 52 insertions(+), 3 deletions(-)
create mode 100644 etc/systemd/fcoemon.socket
diff --git a/Makefile.am b/Makefile.am
index 012b560..e7df6f5 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -43,7 +43,7 @@ dist_fcoe_config_DATA = etc/cfg-ethx
## install systemd service files
if HAVE_SYSTEMD
-systemdsystemunit_DATA = etc/systemd/fcoe.service
+systemdsystemunit_DATA = etc/systemd/fcoe.service etc/systemd/fcoemon.socket
endif
## man pages for fcoeadm and fcoemon
diff --git a/etc/systemd/fcoe.service b/etc/systemd/fcoe.service
index 4834e43..5e5c8a2 100644
--- a/etc/systemd/fcoe.service
+++ b/etc/systemd/fcoe.service
@@ -3,7 +3,7 @@ Description=Open-FCoE initiator daemon
After=syslog.target network.target
[Service]
-Type=forking
+Type=simple
EnvironmentFile=/etc/sysconfig/fcoe
ExecStartPre=/sbin/modprobe -qa $SUPPORTED_DRIVERS
ExecStart=/usr/sbin/fcoemon $FCOEMON_OPTS
@@ -11,3 +11,4 @@ ExecStart=/usr/sbin/fcoemon $FCOEMON_OPTS
[Install]
WantedBy=multi-user.target
Also=lldpad.socket
+Also=fcoemon.socket
diff --git a/etc/systemd/fcoemon.socket b/etc/systemd/fcoemon.socket
new file mode 100644
index 0000000..4de8715
--- /dev/null
+++ b/etc/systemd/fcoemon.socket
@@ -0,0 +1,6 @@
+[Socket]
+ListenDatagram=@/com/intel/fcoemon
+PassCredentials=true
+
+[Install]
+WantedBy=sockets.target
diff --git a/fcoemon.c b/fcoemon.c
index be4c74d..5e4f8d7 100644
--- a/fcoemon.c
+++ b/fcoemon.c
@@ -3546,12 +3546,54 @@ err:
sendto(snum, rbuf, MSG_RBUF, 0, (struct sockaddr *)&from, fromlen);
}
+static int fcm_systemd_socket(void)
+{
+ char *env, *ptr;
+ unsigned int p, l;
+
+ env = getenv("LISTEN_PID");
+ if (!env)
+ return -1;
+
+ p = strtoul(env, &ptr, 10);
+ if (ptr && ptr == env) {
+ FCM_LOG_DBG("Invalid value '%s' for LISTEN_PID\n", env);
+ return -1;
+ }
+ if ((pid_t)p != getpid()) {
+ FCM_LOG_DBG("Invalid PID '%d' from LISTEN_PID\n", p);
+ return -1;
+ }
+ env = getenv("LISTEN_FDS");
+ if (!env) {
+ FCM_LOG_DBG("LISTEN_FDS is not set\n");
+ return -1;
+ }
+ l = strtoul(env, &ptr, 10);
+ if (ptr && ptr == env) {
+ FCM_LOG_DBG("Invalid value '%s' for LISTEN_FDS\n", env);
+ return -1;
+ }
+ if (l != 1) {
+ FCM_LOG_DBG("LISTEN_FDS specified %d fds\n", l);
+ return -1;
+ }
+ /* systemd returns fds with an offset of '3' */
+ return 3;
+}
+
static int fcm_srv_create(struct fcm_srv_info *srv_info)
{
socklen_t addrlen;
struct sockaddr_un addr;
int rc = 0;
+ srv_info->srv_sock = fcm_systemd_socket();
+ if (srv_info->srv_sock > 0) {
+ FCM_LOG_DBG("Using systemd socket\n");
+ goto out_done;
+ }
+
srv_info->srv_sock = socket(AF_LOCAL, SOCK_DGRAM, 0);
if (srv_info->srv_sock < 0) {
FCM_LOG_ERR(errno, "Failed to create socket\n");
@@ -3570,7 +3612,7 @@ static int fcm_srv_create(struct fcm_srv_info *srv_info)
rc = errno;
goto err_close;
}
-
+out_done:
sa_select_add_fd(srv_info->srv_sock, fcm_srv_receive,
NULL, NULL, srv_info);
--
1.8.1.4
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