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move linux fs functions to linux/fs module
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,3 +1,164 @@ | ||
| use rustc_middle::ty::ScalarInt; | ||
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| use crate::*; | ||
| use epoll::{Epoll, EpollEvent}; | ||
| use event::Event; | ||
| use socketpair::SocketPair; | ||
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| use shims::unix::fs::EvalContextExtPrivate; | ||
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| pub mod epoll; | ||
| pub mod event; | ||
| pub mod socketpair; | ||
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| impl<'mir, 'tcx: 'mir> EvalContextExt<'mir, 'tcx> for crate::MiriInterpCx<'mir, 'tcx> {} | ||
| pub trait EvalContextExt<'mir, 'tcx: 'mir>: crate::MiriInterpCxExt<'mir, 'tcx> { | ||
| fn epoll_create1(&mut self, flags: &OpTy<'tcx, Provenance>) -> InterpResult<'tcx, i32> { | ||
| let this = self.eval_context_mut(); | ||
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| let flags = this.read_scalar(flags)?.to_i32()?; | ||
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| let epoll_cloexec = this.eval_libc_i32("EPOLL_CLOEXEC")?; | ||
| // TODO actually do the thing | ||
| let _fd_cloexec = this.eval_libc_i32("FD_CLOEXEC")?; | ||
| if flags == epoll_cloexec { | ||
| // set close on exec, FD_CLOEXEC | ||
| } else if flags != 0 { | ||
| let einval = this.eval_libc("EINVAL")?; | ||
| this.set_last_error(einval)?; | ||
| return Ok(-1); | ||
| } | ||
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| let fh = &mut this.machine.file_handler; | ||
| #[allow(clippy::box_default)] | ||
| let fd = fh.insert_fd(Box::new(Epoll::default())); | ||
| Ok(fd) | ||
| } | ||
|
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| fn epoll_ctl( | ||
| &mut self, | ||
| epfd: &OpTy<'tcx, Provenance>, | ||
| op: &OpTy<'tcx, Provenance>, | ||
| fd: &OpTy<'tcx, Provenance>, | ||
| event: &OpTy<'tcx, Provenance>, | ||
| ) -> InterpResult<'tcx, i32> { | ||
| let this = self.eval_context_mut(); | ||
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| let values = this.read_scalar(op)?.to_i32()?; | ||
| let epfd = this.read_scalar(epfd)?.to_i32()?; | ||
| let fd = this.read_scalar(fd)?.to_i32()?; | ||
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| let epoll_ctl_add = this.eval_libc_i32("EPOLL_CTL_ADD")?; | ||
| let epoll_ctl_mod = this.eval_libc_i32("EPOLL_CTL_MOD")?; | ||
| let epoll_ctl_del = this.eval_libc_i32("EPOLL_CTL_DEL")?; | ||
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| if values == epoll_ctl_add || values == epoll_ctl_mod { | ||
| let event = this.deref_operand(event)?; | ||
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| let events = this.mplace_field(&event, 0)?; | ||
| let events = this.read_scalar(&events.into())?.to_u32()?; | ||
| let data = this.mplace_field(&event, 1)?; | ||
| let data = this.read_scalar(&data.into())?.to_u64()?; | ||
| let event = EpollEvent { events, data }; | ||
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| if let Some(epfd) = this.machine.file_handler.handles.get_mut(&epfd) { | ||
| let epfd = epfd.as_epoll_handle()?; | ||
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| epfd.file_descriptors.insert(fd, event); | ||
| Ok(0) | ||
| } else { | ||
| this.handle_not_found() | ||
| } | ||
| } else if values == epoll_ctl_del { | ||
| if let Some(epfd) = this.machine.file_handler.handles.get_mut(&epfd) { | ||
| let epfd = epfd.as_epoll_handle()?; | ||
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| epfd.file_descriptors.remove(&fd); | ||
| Ok(0) | ||
| } else { | ||
| this.handle_not_found() | ||
| } | ||
| } else { | ||
| let einval = this.eval_libc("EINVAL")?; | ||
| this.set_last_error(einval)?; | ||
| Ok(-1) | ||
| } | ||
| } | ||
|
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||
| fn epoll_wait( | ||
| &mut self, | ||
| epfd: &OpTy<'tcx, Provenance>, | ||
| events: &OpTy<'tcx, Provenance>, | ||
| maxevents: &OpTy<'tcx, Provenance>, | ||
| timeout: &OpTy<'tcx, Provenance>, | ||
| ) -> InterpResult<'tcx, i32> { | ||
| let this = self.eval_context_mut(); | ||
|
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| let _epfd = this.read_scalar(epfd)?.to_i32()?; | ||
| let _events = this.read_scalar(events)?; | ||
| let maxevents = this.read_scalar(maxevents)?.to_i32()?; | ||
| let _timeout = this.read_scalar(timeout)?.to_i32()?; | ||
|
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| if maxevents <= 0 { | ||
| throw_ub_format!("maxevents must be greater than 0"); | ||
| } | ||
|
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| throw_ub_format!("closed due to not writing"); | ||
| } | ||
|
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| fn eventfd( | ||
| &mut self, | ||
| val: &OpTy<'tcx, Provenance>, | ||
| flags: &OpTy<'tcx, Provenance>, | ||
| ) -> InterpResult<'tcx, i32> { | ||
| let this = self.eval_context_mut(); | ||
|
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| let val = this.read_scalar(val)?.to_u32()?; | ||
| let flags = this.read_scalar(flags)?.to_i32()?; | ||
|
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| let efd_cloexec = this.eval_libc_i32("EFD_CLOEXEC")?; | ||
| let efd_nonblock = this.eval_libc_i32("EFD_NONBLOCK")?; | ||
| let efd_semaphore = this.eval_libc_i32("EFD_SEMAPHORE")?; | ||
| // TODO actually do the thing | ||
| if flags & efd_cloexec != 0 {} | ||
| if flags & efd_nonblock != 0 {} | ||
| if flags & efd_semaphore != 0 { | ||
| throw_unsup_format!("EFD_SEMAPHORE is unsupported"); | ||
| } | ||
|
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| let fh = &mut this.machine.file_handler; | ||
| let fd = fh.insert_fd(Box::new(Event { val })); | ||
| Ok(fd) | ||
| } | ||
|
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| fn socketpair( | ||
| &mut self, | ||
| _domain: &OpTy<'tcx, Provenance>, | ||
| type_: &OpTy<'tcx, Provenance>, | ||
| _protocol: &OpTy<'tcx, Provenance>, | ||
| sv: &OpTy<'tcx, Provenance>, | ||
| ) -> InterpResult<'tcx, i32> { | ||
| let this = self.eval_context_mut(); | ||
|
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| let _flags = this.read_scalar(type_)?.to_i32()?; | ||
| let sv = this.deref_operand(sv)?; | ||
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| let fh = &mut this.machine.file_handler; | ||
| let sv0 = fh.insert_fd(Box::new(SocketPair)); | ||
| let sv0 = ScalarInt::try_from_int(sv0, sv.layout.size).unwrap(); | ||
| let sv1 = fh.insert_fd(Box::new(SocketPair)); | ||
| let sv1 = ScalarInt::try_from_int(sv1, sv.layout.size).unwrap(); | ||
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| this.write_scalar(sv0, &sv.into())?; | ||
| this.write_scalar(sv1, &sv.offset(sv.layout.size, sv.layout, this)?.into())?; | ||
|
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| Ok(0) | ||
| } | ||
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| fn libc_current_sigrtmax(&mut self) -> InterpResult<'tcx, i32> { | ||
| let _this = self.eval_context_mut(); | ||
|
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| // TODO return the correct value | ||
| Ok(42) | ||
| } | ||
| } |