A working implementation of cwd_of_process for FreeBSD

kitty/child.py

@@ -7,12 +7,15 @@ import sys
 from collections import defaultdict
 from contextlib import contextmanager, suppress
 from typing import (
-    DefaultDict, Dict, Generator, List, Optional, Sequence, Tuple, TYPE_CHECKING
+    TYPE_CHECKING, DefaultDict, Dict, Generator, List, Optional, Sequence,
+    Tuple
 )
 
 import kitty.fast_data_types as fast_data_types
 
-from .constants import is_macos, kitty_base_dir, shell_path, terminfo_dir
+from .constants import (
+    is_freebsd, is_macos, kitty_base_dir, shell_path, terminfo_dir
+)
 from .types import run_once
 from .utils import log_error, which
 
@@ -48,6 +51,15 @@ else:
         with open(f'/proc/{pid}/cmdline', 'rb') as f:
             return list(filter(None, f.read().decode('utf-8').split('\0')))
 
+    if is_freebsd:
+        def cwd_of_process(pid: int) -> str:
+            import subprocess
+            cp = subprocess.run(['pwdx', str(pid)], capture_output=True)
+            if cp.returncode != 0:
+                raise ValueError(f'Failed to find cwd of process with pid: {pid}')
+            ans = cp.stdout.decode('utf-8', 'replace').split()[1]
+            return os.path.realpath(ans)
+    else:
         def cwd_of_process(pid: int) -> str:
             ans = f'/proc/{pid}/cwd'
             return os.path.realpath(ans)

kitty/constants.py

@@ -26,6 +26,7 @@ version: Version = Version(0, 25, 0)
 str_version: str = '.'.join(map(str, version))
 _plat = sys.platform.lower()
 is_macos: bool = 'darwin' in _plat
+is_freebsd: bool = 'freebsd' in _plat
 is_running_from_develop: bool = False
 if getattr(sys, 'frozen', False):
     extensions_dir: str = getattr(sys, 'kitty_extensions_dir')