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//! Enable or disable catching syscalls from the inferior process.
use crate::arch::Arch;
use crate::target::Target;
use crate::target::TargetResult;
/// Target Extension - Enable and disable catching syscalls from the inferior
/// process.
///
/// Implementing this extension allows the target to support the `catch syscall`
/// GDB client command. See [GDB documentation](https://sourceware.org/gdb/onlinedocs/gdb/Set-Catchpoints.html)
/// for further details.
pub trait CatchSyscalls: Target {
/// Enables catching syscalls from the inferior process.
///
/// If `filter` is `None`, then all syscalls should be reported to GDB. If a
/// filter is provided, only the syscalls listed in the filter should be
/// reported to GDB.
///
/// Note: filters are not combined, subsequent calls this method should
/// replace any existing syscall filtering.
fn enable_catch_syscalls(
&mut self,
filter: Option<SyscallNumbers<'_, <Self::Arch as Arch>::Usize>>,
) -> TargetResult<(), Self>;
/// Disables catching syscalls from the inferior process.
fn disable_catch_syscalls(&mut self) -> TargetResult<(), Self>;
}
define_ext!(CatchSyscallsOps, CatchSyscalls);
/// Describes where the syscall catchpoint was triggered at.
#[derive(Clone, Copy, Debug, PartialEq, Eq)]
pub enum CatchSyscallPosition {
/// Reached the entry location of the syscall.
Entry,
/// Reached the return location of the syscall.
Return,
}
/// Iterator of syscall numbers that should be reported to GDB.
pub struct SyscallNumbers<'a, U> {
pub(crate) inner: &'a mut dyn Iterator<Item = U>,
}
impl<U> Iterator for SyscallNumbers<'_, U> {
type Item = U;
fn next(&mut self) -> Option<Self::Item> {
self.inner.next()
}
}
|
