feat: expose foreground cwd in pane info

refs #345

2 files changed, 12 insertions, 0 deletions

diff --git a/src/platform/linux.rs b/src/platform/linux.rs
index 046e72c7..d1ae07f1 100644
--- a/src/platform/linux.rs
+++ b/src/platform/linux.rs
@@ -1,5 +1,6 @@
 use std::{
     io::Write,
+    os::fd::RawFd,
     path::PathBuf,
     process::{Command, Stdio},
 };
@@ -86,6 +87,11 @@ pub fn foreground_process_group_id(child_pid: u32) -> Option<u32> {
     (tpgid > 0).then_some(tpgid as u32)
 }
 
+pub fn foreground_process_group_id_for_tty_fd(fd: RawFd) -> Option<u32> {
+    let pgid = unsafe { libc::tcgetpgrp(fd) };
+    (pgid > 0).then_some(pgid as u32)
+}
+
 fn process_pgrp_and_comm(pid: u32) -> Option<(i32, String)> {
     let stat = std::fs::read_to_string(format!("/proc/{pid}/stat")).ok()?;
     let close = stat.rfind(')')?;
diff --git a/src/platform/macos.rs b/src/platform/macos.rs
index ac0e160b..e38b29eb 100644
--- a/src/platform/macos.rs
+++ b/src/platform/macos.rs
@@ -1,5 +1,6 @@
 use std::ffi::OsStr;
 use std::io::Write;
+use std::os::fd::RawFd;
 use std::os::unix::ffi::OsStrExt;
 use std::path::{Path, PathBuf};
 use std::process::{Command, Stdio};
@@ -177,6 +178,11 @@ pub fn foreground_process_group_id(pid: u32) -> Option<u32> {
     }
 }
 
+pub fn foreground_process_group_id_for_tty_fd(fd: RawFd) -> Option<u32> {
+    let pgid = unsafe { libc::tcgetpgrp(fd) };
+    (pgid > 0).then_some(pgid as u32)
+}
+
 /// Get the effective process name from `argv[0]` via `sysctl(KERN_PROCARGS2)`.
 ///
 /// This is the macOS equivalent of reading `/proc/{pid}/cmdline` on Linux.