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Diffstat (limited to 'pkg/sentry/fs/tty/slave.go')
| -rw-r--r-- | pkg/sentry/fs/tty/slave.go | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/pkg/sentry/fs/tty/slave.go b/pkg/sentry/fs/tty/slave.go index 9178071a4..f5eec726e 100644 --- a/pkg/sentry/fs/tty/slave.go +++ b/pkg/sentry/fs/tty/slave.go @@ -133,6 +133,9 @@ func (sf *slaveFileOperations) Write(ctx context.Context, _ *fs.File, src userme // Ioctl implements fs.FileOperations.Ioctl. func (sf *slaveFileOperations) Ioctl(ctx context.Context, io usermem.IO, args arch.SyscallArguments) (uintptr, error) { switch args[1].Uint() { + case linux.FIONREAD: // linux.FIONREAD == linux.TIOCINQ + // Get the number of bytes in the input queue read buffer. + return 0, sf.si.t.ld.inputQueueReadSize(ctx, io, args) case linux.TCGETS: return sf.si.t.ld.getTermios(ctx, io, args) case linux.TCSETS: |