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-rw-r--r--sd-daemon/listen_fds.go51
-rw-r--r--sd-daemon/logger/logger.go20
2 files changed, 71 insertions, 0 deletions
diff --git a/sd-daemon/listen_fds.go b/sd-daemon/listen_fds.go
new file mode 100644
index 0000000..c90d373
--- /dev/null
+++ b/sd-daemon/listen_fds.go
@@ -0,0 +1,51 @@
+// Copyright 2015 CoreOS, Inc.
+// Copyright 2015 Luke Shumaker
+//
+// 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.
+
+// Package activation implements primitives for systemd socket activation.
+package listen
+
+import (
+ "os"
+ "strconv"
+ "syscall"
+)
+
+//#include <systemd/sd-daemon.h>
+import "C"
+
+func ListenFds(unsetEnv bool) []*os.File {
+ if unsetEnv {
+ defer os.Unsetenv("LISTEN_PID")
+ defer os.Unsetenv("LISTEN_FDS")
+ }
+
+ pid, err := strconv.Atoi(os.Getenv("LISTEN_PID"))
+ if err != nil || pid != os.Getpid() {
+ return nil
+ }
+
+ nfds, err := strconv.Atoi(os.Getenv("LISTEN_FDS"))
+ if err != nil || nfds == 0 {
+ return nil
+ }
+
+ files := make([]*os.File, 0, nfds)
+ for fd := C.SD_LISTEN_FDS_START; fd < C.SD_LISTEN_FDS_START+nfds; fd++ {
+ syscall.CloseOnExec(fd)
+ files = append(files, os.NewFile(uintptr(fd), "LISTEN_FD_"+strconv.Itoa(fd)))
+ }
+
+ return files
+}
diff --git a/sd-daemon/logger/logger.go b/sd-daemon/logger/logger.go
new file mode 100644
index 0000000..cfabe9f
--- /dev/null
+++ b/sd-daemon/logger/logger.go
@@ -0,0 +1,20 @@
+package logger
+
+import ("fmt"; "os")
+
+//#include <systemd/sd-daemon.h>
+import "C"
+
+func log(level string, format string, a ...interface{}) {
+ f := level + format + "\n";
+ fmt.Fprintf(os.Stderr, f, a);
+}
+
+/* system is unusable */ func Emerg( format string, a ...interface{}) { log(C.SD_EMERG , format, a); }
+/* action must be taken immediately */ func Alert( format string, a ...interface{}) { log(C.SD_ALERT , format, a); }
+/* critical conditions */ func Crit( format string, a ...interface{}) { log(C.SD_CRIT , format, a); }
+/* error conditions */ func Err( format string, a ...interface{}) { log(C.SD_ERR , format, a); }
+/* warning conditions */ func Warning(format string, a ...interface{}) { log(C.SD_WARNING, format, a); }
+/* normal but significant condition */ func Notice( format string, a ...interface{}) { log(C.SD_NOTICE , format, a); }
+/* informational */ func Info( format string, a ...interface{}) { log(C.SD_INFO , format, a); }
+/* debug-level messages */ func Debug( format string, a ...interface{}) { log(C.SD_DEBUG , format, a); }