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Diffstat (limited to 'vendor/github.com/tetratelabs/wazero/internal/sysfs/stat_windows.go')
-rw-r--r--vendor/github.com/tetratelabs/wazero/internal/sysfs/stat_windows.go120
1 files changed, 0 insertions, 120 deletions
diff --git a/vendor/github.com/tetratelabs/wazero/internal/sysfs/stat_windows.go b/vendor/github.com/tetratelabs/wazero/internal/sysfs/stat_windows.go
deleted file mode 100644
index 4456dd782..000000000
--- a/vendor/github.com/tetratelabs/wazero/internal/sysfs/stat_windows.go
+++ /dev/null
@@ -1,120 +0,0 @@
-//go:build (amd64 || arm64) && windows
-
-package sysfs
-
-import (
- "io/fs"
- "syscall"
-
- experimentalsys "github.com/tetratelabs/wazero/experimental/sys"
- "github.com/tetratelabs/wazero/sys"
-)
-
-// dirNlinkIncludesDot is false because Windows does not return dot entries.
-//
-// Note: this is only used in tests
-const dirNlinkIncludesDot = false
-
-func lstat(path string) (sys.Stat_t, experimentalsys.Errno) {
- attrs := uint32(syscall.FILE_FLAG_BACKUP_SEMANTICS)
- // Use FILE_FLAG_OPEN_REPARSE_POINT, otherwise CreateFile will follow symlink.
- // See https://docs.microsoft.com/en-us/windows/desktop/FileIO/symbolic-link-effects-on-file-systems-functions#createfile-and-createfiletransacted
- attrs |= syscall.FILE_FLAG_OPEN_REPARSE_POINT
- return statPath(attrs, path)
-}
-
-func stat(path string) (sys.Stat_t, experimentalsys.Errno) {
- attrs := uint32(syscall.FILE_FLAG_BACKUP_SEMANTICS)
- return statPath(attrs, path)
-}
-
-func statPath(createFileAttrs uint32, path string) (sys.Stat_t, experimentalsys.Errno) {
- if len(path) == 0 {
- return sys.Stat_t{}, experimentalsys.ENOENT
- }
- pathp, err := syscall.UTF16PtrFromString(path)
- if err != nil {
- return sys.Stat_t{}, experimentalsys.EINVAL
- }
-
- // open the file handle
- h, err := syscall.CreateFile(pathp, 0, 0, nil,
- syscall.OPEN_EXISTING, createFileAttrs, 0)
- if err != nil {
- errno := experimentalsys.UnwrapOSError(err)
- // To match expectations of WASI, e.g. TinyGo TestStatBadDir, return
- // ENOENT, not ENOTDIR.
- if errno == experimentalsys.ENOTDIR {
- errno = experimentalsys.ENOENT
- }
- return sys.Stat_t{}, errno
- }
- defer syscall.CloseHandle(h)
-
- return statHandle(h)
-}
-
-// fdFile allows masking the `Fd` function on os.File.
-type fdFile interface {
- Fd() uintptr
-}
-
-func statFile(f fs.File) (sys.Stat_t, experimentalsys.Errno) {
- if osF, ok := f.(fdFile); ok {
- // Attempt to get the stat by handle, which works for normal files
- st, err := statHandle(syscall.Handle(osF.Fd()))
-
- // ERROR_INVALID_HANDLE happens before Go 1.20. Don't fail as we only
- // use that approach to fill in inode data, which is not critical.
- //
- // Note: statHandle uses UnwrapOSError which coerces
- // ERROR_INVALID_HANDLE to EBADF.
- if err != experimentalsys.EBADF {
- return st, err
- }
- }
- return defaultStatFile(f)
-}
-
-func statHandle(h syscall.Handle) (sys.Stat_t, experimentalsys.Errno) {
- winFt, err := syscall.GetFileType(h)
- if err != nil {
- return sys.Stat_t{}, experimentalsys.UnwrapOSError(err)
- }
-
- var fi syscall.ByHandleFileInformation
- if err = syscall.GetFileInformationByHandle(h, &fi); err != nil {
- return sys.Stat_t{}, experimentalsys.UnwrapOSError(err)
- }
-
- var m fs.FileMode
- if fi.FileAttributes&syscall.FILE_ATTRIBUTE_READONLY != 0 {
- m |= 0o444
- } else {
- m |= 0o666
- }
-
- switch { // check whether this is a symlink first
- case fi.FileAttributes&syscall.FILE_ATTRIBUTE_REPARSE_POINT != 0:
- m |= fs.ModeSymlink
- case winFt == syscall.FILE_TYPE_PIPE:
- m |= fs.ModeNamedPipe
- case winFt == syscall.FILE_TYPE_CHAR:
- m |= fs.ModeDevice | fs.ModeCharDevice
- case fi.FileAttributes&syscall.FILE_ATTRIBUTE_DIRECTORY != 0:
- m |= fs.ModeDir | 0o111 // e.g. 0o444 -> 0o555
- }
-
- st := sys.Stat_t{}
- // FileIndex{High,Low} can be combined and used as a unique identifier like inode.
- // https://learn.microsoft.com/en-us/windows/win32/api/fileapi/ns-fileapi-by_handle_file_information
- st.Dev = uint64(fi.VolumeSerialNumber)
- st.Ino = (uint64(fi.FileIndexHigh) << 32) | uint64(fi.FileIndexLow)
- st.Mode = m
- st.Nlink = uint64(fi.NumberOfLinks)
- st.Size = int64(fi.FileSizeHigh)<<32 + int64(fi.FileSizeLow)
- st.Atim = fi.LastAccessTime.Nanoseconds()
- st.Mtim = fi.LastWriteTime.Nanoseconds()
- st.Ctim = fi.CreationTime.Nanoseconds()
- return st, 0
-}