Initial commit

cmd/runmqserver/crtmqvol.go

@@ -0,0 +1,87 @@
+/*
+© Copyright IBM Corporation 2017
+
+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 main
+
+import (
+	"log"
+	"os"
+	"path/filepath"
+	"runtime"
+	"syscall"
+)
+
+//const mainDir string := "/mnt/mqm"
+const mqmUID uint32 = 1000
+const mqmGID uint32 = 1000
+
+func createVolume(path string) error {
+	// fi, err := os.Stat(path)
+	// if err != nil {
+	// 	if os.IsNotExist(err) {
+	// 		// TODO: Should this be fatal?
+	// 		//log.Warnf("No volume found under %v", path)
+	// 		return nil
+	// 	} else {
+	// 		return err
+	// 	}
+	// }
+	//log.Printf("%v details: %v", path, fi.Sys())
+	dataPath := filepath.Join(path, "data")
+	fi, err := os.Stat(dataPath)
+	if err != nil {
+		if os.IsNotExist(err) {
+			err = os.MkdirAll(dataPath, 0755)
+			if err != nil {
+				return err
+			}
+		} else {
+			return err
+		}
+	}
+	fi, err = os.Stat(dataPath)
+	if err != nil {
+		return err
+	}
+	sys := fi.Sys()
+	if sys != nil && runtime.GOOS == "linux" {
+		// log.Printf("Checking UID/GID for %v", dataPath)
+		//log.Debugf("Checking UID/GID for %v", dataPath)
+		stat := sys.(*syscall.Stat_t)
+		if stat.Uid != mqmUID || stat.Gid != mqmGID {
+			err = os.Chown(dataPath, int(mqmUID), int(mqmGID))
+			if err != nil {
+				log.Printf("Error: Unable to change ownership of %v", dataPath)
+				return err
+			}
+		}
+	}
+	return nil
+}
+
+// If /mnt/mqm exists
+// 	If /mnt/mqm contains a "data" directory AND data is owned by mqm:mqm AND data is writeable by mqm:mqm then
+// 		Create Symlink from /var/mqm to /mnt/mqm/data
+// 	Else
+// 		// Try to sort it out
+// 		Create directory /mnt/mqm/data
+// 		If directory not already owned by mqm:mqm
+// 			chown mqm:mqm
+// 			if error
+// 				delete directory again if empty
+// 			if directory not already 0755
+// 				chmod 0755
+// 				if error
+// 					delete directory again if empty