161 lines
3.5 KiB
Go
161 lines
3.5 KiB
Go
package sys
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import (
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"io/fs"
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"github.com/tetratelabs/wazero/sys"
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)
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// UnimplementedFS is an FS that returns ENOSYS for all functions,
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// This should be embedded to have forward compatible implementations.
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type UnimplementedFS struct{}
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// OpenFile implements FS.OpenFile
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func (UnimplementedFS) OpenFile(path string, flag Oflag, perm fs.FileMode) (File, Errno) {
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return nil, ENOSYS
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}
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// Lstat implements FS.Lstat
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func (UnimplementedFS) Lstat(path string) (sys.Stat_t, Errno) {
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return sys.Stat_t{}, ENOSYS
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}
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// Stat implements FS.Stat
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func (UnimplementedFS) Stat(path string) (sys.Stat_t, Errno) {
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return sys.Stat_t{}, ENOSYS
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}
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// Readlink implements FS.Readlink
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func (UnimplementedFS) Readlink(path string) (string, Errno) {
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return "", ENOSYS
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}
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// Mkdir implements FS.Mkdir
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func (UnimplementedFS) Mkdir(path string, perm fs.FileMode) Errno {
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return ENOSYS
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}
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// Chmod implements FS.Chmod
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func (UnimplementedFS) Chmod(path string, perm fs.FileMode) Errno {
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return ENOSYS
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}
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// Rename implements FS.Rename
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func (UnimplementedFS) Rename(from, to string) Errno {
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return ENOSYS
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}
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// Rmdir implements FS.Rmdir
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func (UnimplementedFS) Rmdir(path string) Errno {
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return ENOSYS
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}
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// Link implements FS.Link
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func (UnimplementedFS) Link(_, _ string) Errno {
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return ENOSYS
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}
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// Symlink implements FS.Symlink
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func (UnimplementedFS) Symlink(_, _ string) Errno {
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return ENOSYS
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}
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// Unlink implements FS.Unlink
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func (UnimplementedFS) Unlink(path string) Errno {
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return ENOSYS
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}
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// Utimens implements FS.Utimens
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func (UnimplementedFS) Utimens(path string, atim, mtim int64) Errno {
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return ENOSYS
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}
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// UnimplementedFile is a File that returns ENOSYS for all functions,
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// except where no-op are otherwise documented.
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//
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// This should be embedded to have forward compatible implementations.
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type UnimplementedFile struct{}
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// Dev implements File.Dev
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func (UnimplementedFile) Dev() (uint64, Errno) {
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return 0, 0
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}
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// Ino implements File.Ino
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func (UnimplementedFile) Ino() (sys.Inode, Errno) {
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return 0, 0
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}
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// IsDir implements File.IsDir
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func (UnimplementedFile) IsDir() (bool, Errno) {
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return false, 0
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}
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// IsAppend implements File.IsAppend
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func (UnimplementedFile) IsAppend() bool {
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return false
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}
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// SetAppend implements File.SetAppend
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func (UnimplementedFile) SetAppend(bool) Errno {
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return ENOSYS
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}
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// Stat implements File.Stat
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func (UnimplementedFile) Stat() (sys.Stat_t, Errno) {
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return sys.Stat_t{}, ENOSYS
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}
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// Read implements File.Read
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func (UnimplementedFile) Read([]byte) (int, Errno) {
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return 0, ENOSYS
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}
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// Pread implements File.Pread
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func (UnimplementedFile) Pread([]byte, int64) (int, Errno) {
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return 0, ENOSYS
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}
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// Seek implements File.Seek
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func (UnimplementedFile) Seek(int64, int) (int64, Errno) {
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return 0, ENOSYS
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}
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// Readdir implements File.Readdir
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func (UnimplementedFile) Readdir(int) (dirents []Dirent, errno Errno) {
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return nil, ENOSYS
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}
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// Write implements File.Write
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func (UnimplementedFile) Write([]byte) (int, Errno) {
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return 0, ENOSYS
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}
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// Pwrite implements File.Pwrite
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func (UnimplementedFile) Pwrite([]byte, int64) (int, Errno) {
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return 0, ENOSYS
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}
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// Truncate implements File.Truncate
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func (UnimplementedFile) Truncate(int64) Errno {
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return ENOSYS
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}
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// Sync implements File.Sync
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func (UnimplementedFile) Sync() Errno {
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return 0 // not ENOSYS
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}
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// Datasync implements File.Datasync
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func (UnimplementedFile) Datasync() Errno {
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return 0 // not ENOSYS
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}
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// Utimens implements File.Utimens
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func (UnimplementedFile) Utimens(int64, int64) Errno {
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return ENOSYS
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}
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// Close implements File.Close
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func (UnimplementedFile) Close() (errno Errno) { return }
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