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minio/cmd/posix-errors.go

147 lines
3.7 KiB

/*
* MinIO Cloud Storage, (C) 2016, 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 cmd
import (
"os"
"runtime"
"syscall"
)
// Function not implemented error
func isSysErrNoSys(err error) bool {
if err == syscall.ENOSYS {
return true
}
pathErr, ok := err.(*os.PathError)
return ok && pathErr.Err == syscall.ENOSYS
}
// Not supported error
func isSysErrOpNotSupported(err error) bool {
if err == syscall.EOPNOTSUPP {
return true
}
pathErr, ok := err.(*os.PathError)
return ok && pathErr.Err == syscall.EOPNOTSUPP
}
// No space left on device error
func isSysErrNoSpace(err error) bool {
if err == syscall.ENOSPC {
return true
}
pathErr, ok := err.(*os.PathError)
return ok && pathErr.Err == syscall.ENOSPC
}
// Input/output error
func isSysErrIO(err error) bool {
if err == syscall.EIO {
return true
}
pathErr, ok := err.(*os.PathError)
return ok && pathErr.Err == syscall.EIO
}
// Check if the given error corresponds to EISDIR (is a directory).
func isSysErrIsDir(err error) bool {
if err == syscall.EISDIR {
return true
}
pathErr, ok := err.(*os.PathError)
return ok && pathErr.Err == syscall.EISDIR
}
// Check if the given error corresponds to ENOTDIR (is not a directory).
func isSysErrNotDir(err error) bool {
if err == syscall.ENOTDIR {
return true
}
pathErr, ok := err.(*os.PathError)
return ok && pathErr.Err == syscall.ENOTDIR
}
// Check if the given error corresponds to the ENAMETOOLONG (name too long).
func isSysErrTooLong(err error) bool {
if err == syscall.ENAMETOOLONG {
return true
}
pathErr, ok := err.(*os.PathError)
return ok && pathErr.Err == syscall.ENAMETOOLONG
}
// Check if the given error corresponds to ENOTEMPTY for unix
// and ERROR_DIR_NOT_EMPTY for windows (directory not empty).
func isSysErrNotEmpty(err error) bool {
if err == syscall.ENOTEMPTY {
return true
}
if pathErr, ok := err.(*os.PathError); ok {
if runtime.GOOS == globalWindowsOSName {
if errno, _ok := pathErr.Err.(syscall.Errno); _ok && errno == 0x91 {
// ERROR_DIR_NOT_EMPTY
return true
}
}
if pathErr.Err == syscall.ENOTEMPTY {
return true
}
}
return false
}
// Check if the given error corresponds to the specific ERROR_PATH_NOT_FOUND for windows
func isSysErrPathNotFound(err error) bool {
if runtime.GOOS != globalWindowsOSName {
return false
}
if pathErr, ok := err.(*os.PathError); ok {
if errno, _ok := pathErr.Err.(syscall.Errno); _ok && errno == 0x03 {
// ERROR_PATH_NOT_FOUND
return true
}
}
return false
}
// Check if the given error corresponds to the specific ERROR_INVALID_HANDLE for windows
func isSysErrHandleInvalid(err error) bool {
if runtime.GOOS != globalWindowsOSName {
return false
}
// Check if err contains ERROR_INVALID_HANDLE errno
errno, ok := err.(syscall.Errno)
return ok && errno == 0x6
}
func isSysErrCrossDevice(err error) bool {
e, ok := err.(*os.LinkError)
return ok && e.Err == syscall.EXDEV
}
// Check if given error corresponds to too many open files
func isSysErrTooManyFiles(err error) bool {
if err == syscall.ENFILE || err == syscall.EMFILE {
return true
}
pathErr, ok := err.(*os.PathError)
return ok && (pathErr.Err == syscall.ENFILE || pathErr.Err == syscall.EMFILE)
}