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gh-96005: Handle WASI ENOTCAPABLE in getpath (GH-96006)
- On WASI `ENOTCAPABLE` is now mapped to `PermissionError`. - The `errno` modules exposes the new error number. - `getpath.py` now ignores `PermissionError` when it cannot open landmark files `pybuilddir.txt` and `pyenv.cfg`.
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@ -657,3 +657,12 @@ defined by the module. The specific list of defined symbols is available as
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Interface output queue is full
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.. versionadded:: 3.11
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.. data:: ENOTCAPABLE
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Capabilities insufficient. This error is mapped to the exception
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:exc:`PermissionError`.
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.. availability:: WASI
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.. versionadded:: 3.11.1
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@ -746,7 +746,12 @@ depending on the system error code.
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Raised when trying to run an operation without the adequate access
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rights - for example filesystem permissions.
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Corresponds to :c:data:`errno` :py:data:`~errno.EACCES` and :py:data:`~errno.EPERM`.
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Corresponds to :c:data:`errno` :py:data:`~errno.EACCES`,
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:py:data:`~errno.EPERM`, and :py:data:`~errno.ENOTCAPABLE`.
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.. versionchanged:: 3.11.1
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WASI's :py:data:`~errno.ENOTCAPABLE` is now mapped to
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:exc:`PermissionError`.
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.. exception:: ProcessLookupError
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@ -0,0 +1,4 @@
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On WASI :data:`~errno.ENOTCAPABLE` is now mapped to :exc:`PermissionError`.
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The :mod:`errno` modules exposes the new error number. ``getpath.py`` now
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ignores :exc:`PermissionError` when it cannot open landmark files
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``pybuilddir.txt`` and ``pyenv.cfg``.
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@ -927,6 +927,10 @@ errno_exec(PyObject *module)
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#ifdef EQFULL
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add_errcode("EQFULL", EQFULL, "Interface output queue is full");
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#endif
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#ifdef ENOTCAPABLE
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// WASI extension
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add_errcode("ENOTCAPABLE", ENOTCAPABLE, "Capabilities insufficient");
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#endif
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Py_DECREF(error_dict);
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return 0;
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@ -351,11 +351,11 @@ def search_up(prefix, *landmarks, test=isfile):
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try:
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# Read pyvenv.cfg from one level above executable
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pyvenvcfg = readlines(joinpath(venv_prefix, VENV_LANDMARK))
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except FileNotFoundError:
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except (FileNotFoundError, PermissionError):
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# Try the same directory as executable
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pyvenvcfg = readlines(joinpath(venv_prefix2, VENV_LANDMARK))
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venv_prefix = venv_prefix2
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except FileNotFoundError:
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except (FileNotFoundError, PermissionError):
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venv_prefix = None
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pyvenvcfg = []
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@ -475,7 +475,7 @@ def search_up(prefix, *landmarks, test=isfile):
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# File exists but is empty
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platstdlib_dir = real_executable_dir
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build_prefix = joinpath(real_executable_dir, VPATH)
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except FileNotFoundError:
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except (FileNotFoundError, PermissionError):
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if isfile(joinpath(real_executable_dir, BUILD_LANDMARK)):
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build_prefix = joinpath(real_executable_dir, VPATH)
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if os_name == 'nt':
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@ -3635,6 +3635,11 @@ _PyExc_InitState(PyInterpreterState *interp)
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ADD_ERRNO(InterruptedError, EINTR);
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ADD_ERRNO(PermissionError, EACCES);
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ADD_ERRNO(PermissionError, EPERM);
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#ifdef ENOTCAPABLE
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// Extension for WASI capability-based security. Process lacks
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// capability to access a resource.
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ADD_ERRNO(PermissionError, ENOTCAPABLE);
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#endif
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ADD_ERRNO(ProcessLookupError, ESRCH);
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ADD_ERRNO(TimeoutError, ETIMEDOUT);
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