Implements - Stat returns total and free disk space supported across platforms - Type returns type of the filesystem underneathmaster
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/* |
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* Minio Cloud Storage, (C) 2015 Minio, Inc. |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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package disk_test |
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import ( |
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"io/ioutil" |
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"os" |
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"testing" |
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"github.com/minio/minio/pkg/disk" |
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. "gopkg.in/check.v1" |
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) |
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func Test(t *testing.T) { TestingT(t) } |
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type MySuite struct{} |
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var _ = Suite(&MySuite{}) |
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func (s *MySuite) TestFree(c *C) { |
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path, err := ioutil.TempDir(os.TempDir(), "minio-") |
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c.Check(err, IsNil) |
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_, _, err = disk.Stat(path) |
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c.Check(err, IsNil) |
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} |
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// +build darwin dragonfly freebsd linux netbsd openbsd
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/* |
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* Minio Cloud Storage, (C) 2015 Minio, Inc. |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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package disk |
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import ( |
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"syscall" |
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) |
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// Stat returns total and free bytes available in a directory, e.g. `/`.
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func Stat(path string) (total, free int64, err error) { |
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s := syscall.Statfs_t{} |
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err = syscall.Statfs(path, &s) |
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if err != nil { |
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return |
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} |
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total = int64(s.Bsize) * int64(s.Blocks) |
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free = int64(s.Bsize) * int64(s.Bfree) |
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return |
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} |
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// +build windows
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/* |
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* Minio Cloud Storage, (C) 2015 Minio, Inc. |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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package disk |
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import ( |
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"syscall" |
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"unsafe" |
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) |
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// Stat returns total and free bytes available in a directory, e.g. `C:\`.
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// It returns free space available to the user (including quota limitations)
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//
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// https://msdn.microsoft.com/en-us/library/windows/desktop/aa364937(v=vs.85).aspx
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func Stat(path string) (total, free int64, err error) { |
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kernel32, err := syscall.LoadLibrary("Kernel32.dll") |
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if err != nil { |
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return 0, 0, err |
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} |
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defer syscall.FreeLibrary(kernel32) |
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// https://msdn.microsoft.com/en-us/library/windows/desktop/aa364937(v=vs.85).aspx
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// Retrieves information about the amount of space that is available on a disk volume,
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// which is the total amount of space, the total amount of free space, and the total
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// amount of free space available to the user that is associated with the calling thread.
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GetDiskFreeSpaceEx, err := syscall.GetProcAddress(syscall.Handle(kernel32), "GetDiskFreeSpaceExW") |
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if err != nil { |
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return 0, 0, err |
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} |
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lpFreeBytesAvailable := int64(0) |
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lpTotalNumberOfBytes := int64(0) |
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lpTotalNumberOfFreeBytes := int64(0) |
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// Extract values safely
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// BOOL WINAPI GetDiskFreeSpaceEx(
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// _In_opt_ LPCTSTR lpDirectoryName,
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// _Out_opt_ PULARGE_INTEGER lpFreeBytesAvailable,
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// _Out_opt_ PULARGE_INTEGER lpTotalNumberOfBytes,
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// _Out_opt_ PULARGE_INTEGER lpTotalNumberOfFreeBytes
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// );
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r1, _, e1 := syscall.Syscall6(uintptr(GetDiskFreeSpaceEx), 4, |
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uintptr(unsafe.Pointer(syscall.StringToUTF16Ptr(path))), |
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uintptr(unsafe.Pointer(&lpFreeBytesAvailable)), |
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uintptr(unsafe.Pointer(&lpTotalNumberOfBytes)), |
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uintptr(unsafe.Pointer(&lpTotalNumberOfFreeBytes)), 0, 0) |
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if e1 != 0 { |
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return 0, 0, error(e1) |
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} |
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if r1 == 0 { |
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return 0, 0, syscall.EINVAL |
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} |
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total = int64(lpTotalNumberOfBytes) |
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free = int64(lpFreeBytesAvailable) |
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return total, free, nil |
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} |
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// +build darwin
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/* |
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* Minio Cloud Storage, (C) 2015 Minio, Inc. |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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package disk |
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import ( |
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"strconv" |
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"syscall" |
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) |
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// fsType2StrinMap - list of filesystems supported by donut
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var fsType2StringMap = map[string]string{ |
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"11": "HFS", |
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} |
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// FSType returns the filesystem type of the underlying mounted filesystem
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func FSType(path string) (string, error) { |
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s := syscall.Statfs_t{} |
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err := syscall.Statfs(path, &s) |
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if err != nil { |
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return "", err |
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} |
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return getFSType(s.Type), nil |
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} |
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// getFSType - get filesystem type
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func getFSType(fsType uint32) string { |
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fsTypeHex := strconv.FormatUint(uint64(fsType), 16) |
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fsTypeString, ok := fsType2StringMap[fsTypeHex] |
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if ok == false { |
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return "UNKNOWN" |
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} |
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return fsTypeString |
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} |
@ -0,0 +1,60 @@ |
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// +build linux
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/* |
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* Minio Cloud Storage, (C) 2015 Minio, Inc. |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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package disk |
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import ( |
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"strconv" |
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"syscall" |
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) |
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// fsType2StringMap - list of filesystems supported by donut on linux
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var fsType2StringMap = map[string]string{ |
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"1021994": "TMPFS", |
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"137d": "EXT", |
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"4244": "HFS", |
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"4d44": "MSDOS", |
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"52654973": "REISERFS", |
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"5346544e": "NTFS", |
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"58465342": "XFS", |
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"61756673": "AUFS", |
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"6969": "NFS", |
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"ef51": "EXT2OLD", |
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"ef53": "EXT4", |
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"f15f": "ecryptfs", |
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} |
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// FSType returns the filesystem type of the underlying mounted filesystem
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func FSType(path string) (string, error) { |
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s := syscall.Statfs_t{} |
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err := syscall.Statfs(path, &s) |
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if err != nil { |
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return "", err |
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} |
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return getFSType(s.Type), nil |
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} |
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// getFSType - get filesystem type
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func getFSType(fsType int64) string { |
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fsTypeHex := strconv.FormatInt(fsType, 16) |
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fsTypeString, ok := fsType2StringMap[fsTypeHex] |
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if ok == false { |
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return "UNKNOWN" |
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} |
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return fsTypeString |
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} |
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