1 files changed, 31 insertions, 0 deletions
diff --git a/src/app/process_killer/unix.rs b/src/app/process_killer/unix.rs
new file mode 100644
index 00000000..46b4b42e
--- /dev/null
+++ b/src/app/process_killer/unix.rs
@@ -0,0 +1,31 @@
+use crate::utils::error::BottomError;
+use crate::Pid;
+
+/// Kills a process, given a PID, for unix.
+pub(crate) fn kill_process_given_pid(pid: Pid, signal: usize) -> crate::utils::error::Result<()> {
+    let output = unsafe { libc::kill(pid as i32, signal as i32) };
+    if output != 0 {
+        // We had an error...
+        let err_code = std::io::Error::last_os_error().raw_os_error();
+        let err = match err_code {
+            Some(libc::ESRCH) => "the target process did not exist.",
+            Some(libc::EPERM) => "the calling process does not have the permissions to terminate the target process(es).",
+            Some(libc::EINVAL) => "an invalid signal was specified.",
+            _ => "Unknown error occurred."
+        };
+
+        return if let Some(err_code) = err_code {
+            Err(BottomError::GenericError(format!(
+                "Error code {} - {}",
+                err_code, err,
+            )))
+        } else {
+            Err(BottomError::GenericError(format!(
+                "Error code ??? - {}",
+                err,
+            )))
+        };
+    }
+
+    Ok(())
+}