2025-12-01

2026-03-17 14:58:51 -06:00
parent 183e865f8b
commit 4b82b57113
6846 changed files with 954887 additions and 162606 deletions
@@ -0,0 +1,9 @@
+__all__ = ['DLInfo']
+
+import sys
+
+# pylint: disable=import-private-name; internal
+if sys.platform == 'darwin':
+    from dlinfo._macosx import DLInfo
+else:
+    from dlinfo._glibc import DLInfo
@@ -0,0 +1,44 @@
+import ctypes
+import ctypes.util
+import sys
+
+# dlfcn.h
+_RTLD_DI_LINKMAP = 2
+
+
+class _LinkMap(ctypes.Structure):  # pylint: disable=too-few-public-methods
+    # link.h
+    _fields_ = [
+        ('l_addr', ctypes.c_void_p),
+        ('l_name', ctypes.c_char_p),
+        ('l_ld', ctypes.c_void_p),
+        ('l_next', ctypes.c_void_p),
+        ('l_previous', ctypes.c_void_p),
+    ]
+
+
+_LIBDL = ctypes.cdll.LoadLibrary(ctypes.util.find_library('dl'))
+_DLINFO = _LIBDL.dlinfo
+_DLINFO.argtypes = ctypes.c_void_p, ctypes.c_int, ctypes.c_void_p
+_DLINFO.restype = ctypes.c_int
+
+
+class DLInfo:  # pylint: disable=too-few-public-methods
+
+    """
+    >>> lib = ctypes.cdll.LoadLibrary(ctypes.util.find_library('c'))
+    >>> dlinfo = DLInfo(lib)
+    >>> dlinfo.path
+    '/lib/x86_64-linux-gnu/libc.so.6'
+    """
+
+    def __init__(self, cdll: ctypes.CDLL):
+        _linkmap = ctypes.c_void_p()
+        # pylint: disable=protected-access
+        if _DLINFO(cdll._handle, _RTLD_DI_LINKMAP, ctypes.byref(_linkmap)) != 0:  # pragma: no cover
+            raise RuntimeError(f"dlinfo on {cdll._name} failed")
+        self._linkmap = ctypes.cast(_linkmap, ctypes.POINTER(_LinkMap))
+
+    @property
+    def path(self) -> str:
+        return self._linkmap.contents.l_name.decode(sys.getdefaultencoding())
@@ -0,0 +1,21 @@
+import ctypes
+# pylint: disable=import-error,no-name-in-module
+from ctypes.macholib.dyld import dyld_find
+
+
+class DLInfo:  # pylint: disable=too-few-public-methods
+
+    """
+    >>> lib = ctypes.cdll.LoadLibrary(ctypes.util.find_library('c'))
+    >>> dlinfo = DLInfo(lib)
+    >>> dlinfo.path
+    '/usr/lib/libc.dylib'
+    """
+
+    def __init__(self, cdll: ctypes.CDLL):
+        self._cdll = cdll
+
+    @property
+    def path(self) -> str:
+        # pylint: disable=protected-access
+        return dyld_find(self._cdll._name)