feature: Ctrl+C signal to foreground pgid

libsys/src/abi.rs

@@ -26,6 +26,11 @@ pub enum SystemCall {
     SignalReturn = 42,
     SendSignal = 43,
     Yield = 44,
+    GetSid = 45,
+    GetPgid = 46,
+    GetPpid = 47,
+    SetSid = 48,
+    SetPgid = 49,
     // System
     GetCpuTime = 64,
     // Debugging

libsys/src/calls.rs

@@ -251,14 +251,15 @@ pub fn sys_ioctl(
 
 #[inline(always)]
 pub fn sys_ex_getcputime() -> Result<Duration, Errno> {
-    Errno::from_syscall(unsafe {
-        syscall!(SystemCall::GetCpuTime)
-    }).map(|e| Duration::from_nanos(e as u64))
+    Errno::from_syscall(unsafe { syscall!(SystemCall::GetCpuTime) })
+        .map(|e| Duration::from_nanos(e as u64))
 }
 
 #[inline(always)]
 pub fn sys_ex_signal(entry: usize, stack: usize) -> Result<(), Errno> {
-    Errno::from_syscall_unit(unsafe { syscall!(SystemCall::SetSignalEntry, argn!(entry), argn!(stack)) })
+    Errno::from_syscall_unit(unsafe {
+        syscall!(SystemCall::SetSignalEntry, argn!(entry), argn!(stack))
+    })
 }
 
 #[inline(always)]
@@ -349,7 +350,22 @@ pub fn sys_faccessat(
 
 #[inline(always)]
 pub fn sys_ex_gettid() -> u32 {
-    unsafe {
-        syscall!(SystemCall::GetTid) as u32
-    }
+    unsafe { syscall!(SystemCall::GetTid) as u32 }
 }
+
+#[inline(always)]
+pub fn sys_getpid() -> Pid {
+    unsafe { Pid::from_raw(syscall!(SystemCall::GetPid) as u32) }
+}
+
+#[inline(always)]
+pub fn sys_getpgid(pid: Pid) -> Result<Pid, Errno> {
+    Errno::from_syscall(unsafe { syscall!(SystemCall::GetPgid, argn!(pid.value())) })
+        .map(|e| unsafe { Pid::from_raw(e as u32) })
+}
+
+#[inline(always)]
+pub fn sys_setpgid(pid: Pid, pgid: Pid) -> Result<Pid, Errno> {
+    Errno::from_syscall(unsafe { syscall!(SystemCall::SetPgid, argn!(pid.value()), argn!(pgid.value())) }).map(|e| unsafe { Pid::from_raw(e as u32) })
+}
+

libsys/src/ioctl.rs

@@ -7,6 +7,7 @@ use crate::error::Errno;
 pub enum IoctlCmd {
     TtySetAttributes = 1,
     TtyGetAttributes = 2,
+    TtySetPgrp = 3,
 }
 
 impl TryFrom<u32> for IoctlCmd {
@@ -17,6 +18,7 @@ impl TryFrom<u32> for IoctlCmd {
         match u {
             1 => Ok(Self::TtySetAttributes),
             2 => Ok(Self::TtyGetAttributes),
+            3 => Ok(Self::TtySetPgrp),
             _ => Err(Errno::InvalidArgument)
         }
     }