diff options
Diffstat (limited to 'vendor/github.com/Microsoft/hcsshim/internal/safefile')
| -rw-r--r-- | vendor/github.com/Microsoft/hcsshim/internal/safefile/safeopen.go | 158 | ||||
| -rw-r--r-- | vendor/github.com/Microsoft/hcsshim/internal/safefile/zsyscall_windows.go | 79 |
2 files changed, 51 insertions, 186 deletions
diff --git a/vendor/github.com/Microsoft/hcsshim/internal/safefile/safeopen.go b/vendor/github.com/Microsoft/hcsshim/internal/safefile/safeopen.go index f31edfaf8..d484c212c 100644 --- a/vendor/github.com/Microsoft/hcsshim/internal/safefile/safeopen.go +++ b/vendor/github.com/Microsoft/hcsshim/internal/safefile/safeopen.go @@ -11,72 +11,11 @@ import ( "unsafe" "github.com/Microsoft/hcsshim/internal/longpath" + "github.com/Microsoft/hcsshim/internal/winapi" winio "github.com/Microsoft/go-winio" ) -//go:generate go run $GOROOT\src\syscall\mksyscall_windows.go -output zsyscall_windows.go safeopen.go - -//sys ntCreateFile(handle *uintptr, accessMask uint32, oa *objectAttributes, iosb *ioStatusBlock, allocationSize *uint64, fileAttributes uint32, shareAccess uint32, createDisposition uint32, createOptions uint32, eaBuffer *byte, eaLength uint32) (status uint32) = ntdll.NtCreateFile -//sys ntSetInformationFile(handle uintptr, iosb *ioStatusBlock, information uintptr, length uint32, class uint32) (status uint32) = ntdll.NtSetInformationFile -//sys rtlNtStatusToDosError(status uint32) (winerr error) = ntdll.RtlNtStatusToDosErrorNoTeb -//sys localAlloc(flags uint32, size int) (ptr uintptr) = kernel32.LocalAlloc -//sys localFree(ptr uintptr) = kernel32.LocalFree - -type ioStatusBlock struct { - Status, Information uintptr -} - -type objectAttributes struct { - Length uintptr - RootDirectory uintptr - ObjectName uintptr - Attributes uintptr - SecurityDescriptor uintptr - SecurityQoS uintptr -} - -type unicodeString struct { - Length uint16 - MaximumLength uint16 - Buffer uintptr -} - -type fileLinkInformation struct { - ReplaceIfExists bool - RootDirectory uintptr - FileNameLength uint32 - FileName [1]uint16 -} - -type fileDispositionInformationEx struct { - Flags uintptr -} - -const ( - _FileLinkInformation = 11 - _FileDispositionInformationEx = 64 - - FILE_READ_ATTRIBUTES = 0x0080 - FILE_WRITE_ATTRIBUTES = 0x0100 - DELETE = 0x10000 - - FILE_OPEN = 1 - FILE_CREATE = 2 - - FILE_DIRECTORY_FILE = 0x00000001 - FILE_SYNCHRONOUS_IO_NONALERT = 0x00000020 - FILE_DELETE_ON_CLOSE = 0x00001000 - FILE_OPEN_FOR_BACKUP_INTENT = 0x00004000 - FILE_OPEN_REPARSE_POINT = 0x00200000 - - FILE_DISPOSITION_DELETE = 0x00000001 - - _OBJ_DONT_REPARSE = 0x1000 - - _STATUS_REPARSE_POINT_ENCOUNTERED = 0xC000050B -) - func OpenRoot(path string) (*os.File, error) { longpath, err := longpath.LongAbs(path) if err != nil { @@ -85,16 +24,24 @@ func OpenRoot(path string) (*os.File, error) { return winio.OpenForBackup(longpath, syscall.GENERIC_READ, syscall.FILE_SHARE_READ|syscall.FILE_SHARE_WRITE|syscall.FILE_SHARE_DELETE, syscall.OPEN_EXISTING) } -func ntRelativePath(path string) ([]uint16, error) { +func cleanGoStringRelativePath(path string) (string, error) { path = filepath.Clean(path) if strings.Contains(path, ":") { // Since alternate data streams must follow the file they // are attached to, finding one here (out of order) is invalid. - return nil, errors.New("path contains invalid character `:`") + return "", errors.New("path contains invalid character `:`") } fspath := filepath.FromSlash(path) if len(fspath) > 0 && fspath[0] == '\\' { - return nil, errors.New("expected relative path") + return "", errors.New("expected relative path") + } + return fspath, nil +} + +func ntRelativePath(path string) ([]uint16, error) { + fspath, err := cleanGoStringRelativePath(path) + if err != nil { + return nil, err } path16 := utf16.Encode(([]rune)(fspath)) @@ -110,11 +57,11 @@ func ntRelativePath(path string) ([]uint16, error) { func openRelativeInternal(path string, root *os.File, accessMask uint32, shareFlags uint32, createDisposition uint32, flags uint32) (*os.File, error) { var ( h uintptr - iosb ioStatusBlock - oa objectAttributes + iosb winapi.IOStatusBlock + oa winapi.ObjectAttributes ) - path16, err := ntRelativePath(path) + cleanRelativePath, err := cleanGoStringRelativePath(path) if err != nil { return nil, err } @@ -123,20 +70,16 @@ func openRelativeInternal(path string, root *os.File, accessMask uint32, shareFl return nil, errors.New("missing root directory") } - upathBuffer := localAlloc(0, int(unsafe.Sizeof(unicodeString{}))+len(path16)*2) - defer localFree(upathBuffer) - - upath := (*unicodeString)(unsafe.Pointer(upathBuffer)) - upath.Length = uint16(len(path16) * 2) - upath.MaximumLength = upath.Length - upath.Buffer = upathBuffer + unsafe.Sizeof(*upath) - copy((*[32768]uint16)(unsafe.Pointer(upath.Buffer))[:], path16) + pathUnicode, err := winapi.NewUnicodeString(cleanRelativePath) + if err != nil { + return nil, err + } oa.Length = unsafe.Sizeof(oa) - oa.ObjectName = upathBuffer + oa.ObjectName = uintptr(unsafe.Pointer(pathUnicode)) oa.RootDirectory = uintptr(root.Fd()) - oa.Attributes = _OBJ_DONT_REPARSE - status := ntCreateFile( + oa.Attributes = winapi.OBJ_DONT_REPARSE + status := winapi.NtCreateFile( &h, accessMask|syscall.SYNCHRONIZE, &oa, @@ -145,12 +88,12 @@ func openRelativeInternal(path string, root *os.File, accessMask uint32, shareFl 0, shareFlags, createDisposition, - FILE_OPEN_FOR_BACKUP_INTENT|FILE_SYNCHRONOUS_IO_NONALERT|flags, + winapi.FILE_OPEN_FOR_BACKUP_INTENT|winapi.FILE_SYNCHRONOUS_IO_NONALERT|flags, nil, 0, ) if status != 0 { - return nil, rtlNtStatusToDosError(status) + return nil, winapi.RtlNtStatusToDosError(status) } fullPath, err := longpath.LongAbs(filepath.Join(root.Name(), path)) @@ -182,7 +125,7 @@ func LinkRelative(oldname string, oldroot *os.File, newname string, newroot *os. oldroot, syscall.FILE_WRITE_ATTRIBUTES, syscall.FILE_SHARE_READ|syscall.FILE_SHARE_WRITE|syscall.FILE_SHARE_DELETE, - FILE_OPEN, + winapi.FILE_OPEN, 0, ) if err != nil { @@ -199,8 +142,8 @@ func LinkRelative(oldname string, oldroot *os.File, newname string, newroot *os. newroot, syscall.GENERIC_READ, syscall.FILE_SHARE_READ|syscall.FILE_SHARE_WRITE|syscall.FILE_SHARE_DELETE, - FILE_OPEN, - FILE_DIRECTORY_FILE) + winapi.FILE_OPEN, + winapi.FILE_DIRECTORY_FILE) if err != nil { return &os.LinkError{Op: "link", Old: oldf.Name(), New: filepath.Join(newroot.Name(), newname), Err: err} } @@ -211,7 +154,7 @@ func LinkRelative(oldname string, oldroot *os.File, newname string, newroot *os. return err } if (fi.FileAttributes & syscall.FILE_ATTRIBUTE_REPARSE_POINT) != 0 { - return &os.LinkError{Op: "link", Old: oldf.Name(), New: filepath.Join(newroot.Name(), newname), Err: rtlNtStatusToDosError(_STATUS_REPARSE_POINT_ENCOUNTERED)} + return &os.LinkError{Op: "link", Old: oldf.Name(), New: filepath.Join(newroot.Name(), newname), Err: winapi.RtlNtStatusToDosError(winapi.STATUS_REPARSE_POINT_ENCOUNTERED)} } } else { @@ -227,24 +170,25 @@ func LinkRelative(oldname string, oldroot *os.File, newname string, newroot *os. return err } - size := int(unsafe.Offsetof(fileLinkInformation{}.FileName)) + len(newbase16)*2 - linkinfoBuffer := localAlloc(0, size) - defer localFree(linkinfoBuffer) - linkinfo := (*fileLinkInformation)(unsafe.Pointer(linkinfoBuffer)) + size := int(unsafe.Offsetof(winapi.FileLinkInformation{}.FileName)) + len(newbase16)*2 + linkinfoBuffer := winapi.LocalAlloc(0, size) + defer winapi.LocalFree(linkinfoBuffer) + + linkinfo := (*winapi.FileLinkInformation)(unsafe.Pointer(linkinfoBuffer)) linkinfo.RootDirectory = parent.Fd() linkinfo.FileNameLength = uint32(len(newbase16) * 2) copy((*[32768]uint16)(unsafe.Pointer(&linkinfo.FileName[0]))[:], newbase16) - var iosb ioStatusBlock - status := ntSetInformationFile( + var iosb winapi.IOStatusBlock + status := winapi.NtSetInformationFile( oldf.Fd(), &iosb, linkinfoBuffer, uint32(size), - _FileLinkInformation, + winapi.FileLinkInformationClass, ) if status != 0 { - return &os.LinkError{Op: "link", Old: oldf.Name(), New: filepath.Join(parent.Name(), newbase), Err: rtlNtStatusToDosError(status)} + return &os.LinkError{Op: "link", Old: oldf.Name(), New: filepath.Join(parent.Name(), newbase), Err: winapi.RtlNtStatusToDosError(status)} } return nil @@ -252,17 +196,17 @@ func LinkRelative(oldname string, oldroot *os.File, newname string, newroot *os. // deleteOnClose marks a file to be deleted when the handle is closed. func deleteOnClose(f *os.File) error { - disposition := fileDispositionInformationEx{Flags: FILE_DISPOSITION_DELETE} - var iosb ioStatusBlock - status := ntSetInformationFile( + disposition := winapi.FileDispositionInformationEx{Flags: winapi.FILE_DISPOSITION_DELETE} + var iosb winapi.IOStatusBlock + status := winapi.NtSetInformationFile( f.Fd(), &iosb, uintptr(unsafe.Pointer(&disposition)), uint32(unsafe.Sizeof(disposition)), - _FileDispositionInformationEx, + winapi.FileDispositionInformationExClass, ) if status != 0 { - return rtlNtStatusToDosError(status) + return winapi.RtlNtStatusToDosError(status) } return nil } @@ -291,10 +235,10 @@ func RemoveRelative(path string, root *os.File) error { f, err := openRelativeInternal( path, root, - FILE_READ_ATTRIBUTES|FILE_WRITE_ATTRIBUTES|DELETE, + winapi.FILE_READ_ATTRIBUTES|winapi.FILE_WRITE_ATTRIBUTES|winapi.DELETE, syscall.FILE_SHARE_READ|syscall.FILE_SHARE_WRITE|syscall.FILE_SHARE_DELETE, - FILE_OPEN, - FILE_OPEN_REPARSE_POINT) + winapi.FILE_OPEN, + winapi.FILE_OPEN_REPARSE_POINT) if err == nil { defer f.Close() err = deleteOnClose(f) @@ -385,8 +329,8 @@ func MkdirRelative(path string, root *os.File) error { root, 0, syscall.FILE_SHARE_READ|syscall.FILE_SHARE_WRITE|syscall.FILE_SHARE_DELETE, - FILE_CREATE, - FILE_DIRECTORY_FILE) + winapi.FILE_CREATE, + winapi.FILE_DIRECTORY_FILE) if err == nil { f.Close() } else { @@ -401,10 +345,10 @@ func LstatRelative(path string, root *os.File) (os.FileInfo, error) { f, err := openRelativeInternal( path, root, - FILE_READ_ATTRIBUTES, + winapi.FILE_READ_ATTRIBUTES, syscall.FILE_SHARE_READ|syscall.FILE_SHARE_WRITE|syscall.FILE_SHARE_DELETE, - FILE_OPEN, - FILE_OPEN_REPARSE_POINT) + winapi.FILE_OPEN, + winapi.FILE_OPEN_REPARSE_POINT) if err != nil { return nil, &os.PathError{Op: "stat", Path: filepath.Join(root.Name(), path), Err: err} } @@ -421,7 +365,7 @@ func EnsureNotReparsePointRelative(path string, root *os.File) error { root, 0, syscall.FILE_SHARE_READ|syscall.FILE_SHARE_WRITE|syscall.FILE_SHARE_DELETE, - FILE_OPEN, + winapi.FILE_OPEN, 0) if err != nil { return err diff --git a/vendor/github.com/Microsoft/hcsshim/internal/safefile/zsyscall_windows.go b/vendor/github.com/Microsoft/hcsshim/internal/safefile/zsyscall_windows.go deleted file mode 100644 index 709b9d347..000000000 --- a/vendor/github.com/Microsoft/hcsshim/internal/safefile/zsyscall_windows.go +++ /dev/null @@ -1,79 +0,0 @@ -// Code generated by 'go generate'; DO NOT EDIT. - -package safefile - -import ( - "syscall" - "unsafe" - - "golang.org/x/sys/windows" -) - -var _ unsafe.Pointer - -// Do the interface allocations only once for common -// Errno values. -const ( - errnoERROR_IO_PENDING = 997 -) - -var ( - errERROR_IO_PENDING error = syscall.Errno(errnoERROR_IO_PENDING) -) - -// errnoErr returns common boxed Errno values, to prevent -// allocations at runtime. -func errnoErr(e syscall.Errno) error { - switch e { - case 0: - return nil - case errnoERROR_IO_PENDING: - return errERROR_IO_PENDING - } - // TODO: add more here, after collecting data on the common - // error values see on Windows. (perhaps when running - // all.bat?) - return e -} - -var ( - modntdll = windows.NewLazySystemDLL("ntdll.dll") - modkernel32 = windows.NewLazySystemDLL("kernel32.dll") - - procNtCreateFile = modntdll.NewProc("NtCreateFile") - procNtSetInformationFile = modntdll.NewProc("NtSetInformationFile") - procRtlNtStatusToDosErrorNoTeb = modntdll.NewProc("RtlNtStatusToDosErrorNoTeb") - procLocalAlloc = modkernel32.NewProc("LocalAlloc") - procLocalFree = modkernel32.NewProc("LocalFree") -) - -func ntCreateFile(handle *uintptr, accessMask uint32, oa *objectAttributes, iosb *ioStatusBlock, allocationSize *uint64, fileAttributes uint32, shareAccess uint32, createDisposition uint32, createOptions uint32, eaBuffer *byte, eaLength uint32) (status uint32) { - r0, _, _ := syscall.Syscall12(procNtCreateFile.Addr(), 11, uintptr(unsafe.Pointer(handle)), uintptr(accessMask), uintptr(unsafe.Pointer(oa)), uintptr(unsafe.Pointer(iosb)), uintptr(unsafe.Pointer(allocationSize)), uintptr(fileAttributes), uintptr(shareAccess), uintptr(createDisposition), uintptr(createOptions), uintptr(unsafe.Pointer(eaBuffer)), uintptr(eaLength), 0) - status = uint32(r0) - return -} - -func ntSetInformationFile(handle uintptr, iosb *ioStatusBlock, information uintptr, length uint32, class uint32) (status uint32) { - r0, _, _ := syscall.Syscall6(procNtSetInformationFile.Addr(), 5, uintptr(handle), uintptr(unsafe.Pointer(iosb)), uintptr(information), uintptr(length), uintptr(class), 0) - status = uint32(r0) - return -} - -func rtlNtStatusToDosError(status uint32) (winerr error) { - r0, _, _ := syscall.Syscall(procRtlNtStatusToDosErrorNoTeb.Addr(), 1, uintptr(status), 0, 0) - if r0 != 0 { - winerr = syscall.Errno(r0) - } - return -} - -func localAlloc(flags uint32, size int) (ptr uintptr) { - r0, _, _ := syscall.Syscall(procLocalAlloc.Addr(), 2, uintptr(flags), uintptr(size), 0) - ptr = uintptr(r0) - return -} - -func localFree(ptr uintptr) { - syscall.Syscall(procLocalFree.Addr(), 1, uintptr(ptr), 0, 0) - return -} |