Add GetInfo() support for solaris (minio#5174)

Fixes minio#5173

Author: harshavardhana

pkg/disk/stat_bsd.go

@@ -29,13 +29,13 @@ func GetInfo(path string) (info Info, err error) {
 	if err != nil {
 		return Info{}, err
 	}
-	fsReservedBlocks := uint64(s.Bfree) - uint64(s.Bavail)
+	reservedBlocks := uint64(s.Bfree) - uint64(s.Bavail)
 	info = Info{
-		Total:  uint64(s.Bsize) * (uint64(s.Blocks) - fsReservedBlocks),
+		Total:  uint64(s.Bsize) * (uint64(s.Blocks) - reservedBlocks),
 		Free:   uint64(s.Bsize) * uint64(s.Bavail),
 		Files:  uint64(s.Files),
 		Ffree:  uint64(s.Ffree),
-		FSType: getFSType(s.Fstypename),
+		FSType: getFSType(s.Fstypename[:]),
 	}
 	return info, nil
 }

pkg/disk/stat_fallback.go

@@ -1,4 +1,4 @@
-// +build netbsd solaris
+// +build netbsd
 
 /*
  * Minio Cloud Storage, (C) 2017 Minio, Inc.

pkg/disk/stat_linux.go

@@ -29,10 +29,10 @@ func GetInfo(path string) (info Info, err error) {
 	if err != nil {
 		return Info{}, err
 	}
-	fsReservedBlocks := uint64(s.Bfree) - uint64(s.Bavail)
+	reservedBlocks := uint64(s.Bfree) - uint64(s.Bavail)
 	info = Info{
-		Total:  uint64(s.Bsize) * (uint64(s.Blocks) - fsReservedBlocks),
-		Free:   uint64(s.Bsize) * uint64(s.Bavail),
+		Total:  uint64(s.Frsize) * (uint64(s.Blocks) - reservedBlocks),
+		Free:   uint64(s.Frsize) * uint64(s.Bavail),
 		Files:  uint64(s.Files),
 		Ffree:  uint64(s.Ffree),
 		FSType: getFSType(int64(s.Type)),

pkg/disk/stat_openbsd.go

@@ -29,13 +29,13 @@ func GetInfo(path string) (info Info, err error) {
 	if err != nil {
 		return Info{}, err
 	}
-	fsReservedBlocks := uint64(s.F_bfree) - uint64(s.F_bavail)
+	reservedBlocks := uint64(s.F_bfree) - uint64(s.F_bavail)
 	info = Info{
-		Total:  uint64(s.F_bsize) * (uint64(s.F_blocks) - fsReservedBlocks),
+		Total:  uint64(s.F_bsize) * (uint64(s.F_blocks) - reservedBlocks),
 		Free:   uint64(s.F_bsize) * uint64(s.F_bavail),
 		Files:  uint64(s.F_files),
 		Ffree:  uint64(s.F_ffree),
-		FSType: getFSType(s.F_fstypename),
+		FSType: getFSType(s.F_fstypename[:]),
 	}
 	return info, nil
 }

pkg/disk/stat_solaris.go

@@ -0,0 +1,40 @@
+// +build solaris
+
+/*
+ * Minio Cloud Storage, (C) 2017 Minio, Inc.
+ *
+ * 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 disk
+
+import (
+	"golang.org/x/sys/unix"
+)
+
+// GetInfo returns total and free bytes available in a directory, e.g. `/`.
+func GetInfo(path string) (info Info, err error) {
+	s := unix.Statvfs_t{}
+	if err = unix.Statvfs(path, &s); err != nil {
+		return Info{}, err
+	}
+	reservedBlocks := uint64(s.Bfree) - uint64(s.Bavail)
+	info = Info{
+		Total:  uint64(s.Frsize) * (uint64(s.Blocks) - reservedBlocks),
+		Free:   uint64(s.Frsize) * uint64(s.Bavail),
+		Files:  uint64(s.Files),
+		Ffree:  uint64(s.Ffree),
+		FSType: getFSType(s.Fstr[:]),
+	}
+	return info, nil
+}

pkg/disk/type_bsd.go

@@ -1,4 +1,4 @@
-// +build darwin freebsd dragonfly openbsd
+// +build darwin freebsd dragonfly openbsd solaris
 
 /*
  * Minio Cloud Storage, (C) 2017 Minio, Inc.
@@ -19,9 +19,9 @@
 package disk
 
 // getFSType returns the filesystem type of the underlying mounted filesystem
-func getFSType(fstype [16]int8) string {
-	b := make([]byte, len(fstype[:]))
-	for i, v := range fstype[:] {
+func getFSType(fstype []int8) string {
+	b := make([]byte, len(fstype))
+	for i, v := range fstype {
 		b[i] = byte(v)
 	}
 	return string(b)