bpo-39406: Implement os.putenv() with setenv() if available (GH-18128)
If setenv() C function is available, os.putenv() is now implemented with setenv() instead of putenv(), so Python doesn't have to handle the environment variable memory.
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0852c7dd52
commit
b477d19a6b
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@ -0,0 +1,3 @@
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If ``setenv()`` C function is available, :func:`os.putenv` is now
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implemented with ``setenv()`` instead of ``putenv()``, so Python doesn't
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have to handle the environment variable memory.
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@ -6034,7 +6034,7 @@ exit:
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#endif /* (defined(HAVE_POSIX_FADVISE) && !defined(POSIX_FADVISE_AIX_BUG)) */
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#if defined(HAVE_PUTENV) && defined(MS_WINDOWS)
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#if defined(MS_WINDOWS)
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PyDoc_STRVAR(os_putenv__doc__,
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"putenv($module, name, value, /)\n"
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@ -6080,9 +6080,9 @@ exit:
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return return_value;
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}
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#endif /* defined(HAVE_PUTENV) && defined(MS_WINDOWS) */
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#endif /* defined(MS_WINDOWS) */
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#if defined(HAVE_PUTENV) && !defined(MS_WINDOWS)
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#if ((defined(HAVE_SETENV) || defined(HAVE_PUTENV)) && !defined(MS_WINDOWS))
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PyDoc_STRVAR(os_putenv__doc__,
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"putenv($module, name, value, /)\n"
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@ -6123,7 +6123,7 @@ exit:
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return return_value;
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}
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#endif /* defined(HAVE_PUTENV) && !defined(MS_WINDOWS) */
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#endif /* ((defined(HAVE_SETENV) || defined(HAVE_PUTENV)) && !defined(MS_WINDOWS)) */
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#if defined(HAVE_UNSETENV)
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@ -8773,4 +8773,4 @@ exit:
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#ifndef OS__REMOVE_DLL_DIRECTORY_METHODDEF
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#define OS__REMOVE_DLL_DIRECTORY_METHODDEF
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#endif /* !defined(OS__REMOVE_DLL_DIRECTORY_METHODDEF) */
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/*[clinic end generated code: output=51ba5b9536420cea input=a9049054013a1b77]*/
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/*[clinic end generated code: output=6f42d8be634f5942 input=a9049054013a1b77]*/
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@ -819,19 +819,20 @@ dir_fd_converter(PyObject *o, void *p)
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}
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}
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/* Windows: _wputenv(env) copies the *env* string and doesn't require the
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caller to manage the variable memory. */
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#if defined(HAVE_PUTENV) && !defined(MS_WINDOWS)
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/* Windows _wputenv() and setenv() copy the arguments and so don't require
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the caller to manage the variable memory. Only Unix putenv() requires
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putenv_dict. */
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#if defined(HAVE_PUTENV) && !defined(MS_WINDOWS) && !defined(HAVE_SETENV)
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# define PY_PUTENV_DICT
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#endif
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typedef struct {
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PyObject *billion;
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#ifdef PY_PUTENV_DICT
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/* putenv() and _wputenv() requires that the caller manages the environment
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variable memory. Use a Python dictionary for that: name => env, where
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env is a string like "name=value". On Windows, dict keys and values are
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Unicode strings. On Unix, they are bytes strings. */
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/* putenv() requires that the caller manages the environment variable
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memory. Use a Python dictionary for that: name => env, where env is a
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string like "name=value". On Windows, dict keys and values are Unicode
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strings. On Unix, they are bytes strings. */
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PyObject *putenv_dict;
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#endif
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PyObject *DirEntryType;
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@ -10081,8 +10082,6 @@ posix_putenv_dict_setitem(PyObject *name, PyObject *value)
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#endif /* PY_PUTENV_DICT */
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#ifdef HAVE_PUTENV
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#ifdef MS_WINDOWS
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/*[clinic input]
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os.putenv
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@ -10132,8 +10131,6 @@ os_putenv_impl(PyObject *module, PyObject *name, PyObject *value)
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posix_error();
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goto error;
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}
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/* _wputenv(env) copies the *env* string and doesn't require the caller
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to manage the variable memory. */
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Py_DECREF(unicode);
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Py_RETURN_NONE;
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@ -10142,7 +10139,8 @@ error:
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Py_DECREF(unicode);
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return NULL;
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}
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#else /* MS_WINDOWS */
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/* repeat !defined(MS_WINDOWS) to workaround an Argument Clinic issue */
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#elif (defined(HAVE_SETENV) || defined(HAVE_PUTENV)) && !defined(MS_WINDOWS)
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/*[clinic input]
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os.putenv
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@ -10157,8 +10155,6 @@ static PyObject *
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os_putenv_impl(PyObject *module, PyObject *name, PyObject *value)
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/*[clinic end generated code: output=d29a567d6b2327d2 input=a97bc6152f688d31]*/
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{
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PyObject *bytes = NULL;
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char *env;
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const char *name_string = PyBytes_AS_STRING(name);
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const char *value_string = PyBytes_AS_STRING(value);
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@ -10166,22 +10162,28 @@ os_putenv_impl(PyObject *module, PyObject *name, PyObject *value)
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PyErr_SetString(PyExc_ValueError, "illegal environment variable name");
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return NULL;
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}
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bytes = PyBytes_FromFormat("%s=%s", name_string, value_string);
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#ifdef HAVE_SETENV
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if (setenv(name_string, value_string, 1)) {
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return posix_error();
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}
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#else
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PyObject *bytes = PyBytes_FromFormat("%s=%s", name_string, value_string);
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if (bytes == NULL) {
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return NULL;
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}
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env = PyBytes_AS_STRING(bytes);
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char *env = PyBytes_AS_STRING(bytes);
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if (putenv(env)) {
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Py_DECREF(bytes);
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return posix_error();
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}
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posix_putenv_dict_setitem(name, bytes);
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#endif
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Py_RETURN_NONE;
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}
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#endif /* MS_WINDOWS */
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#endif /* HAVE_PUTENV */
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#endif /* defined(HAVE_SETENV) || defined(HAVE_PUTENV) */
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#ifdef HAVE_UNSETENV
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@ -782,7 +782,6 @@ infodir
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docdir
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oldincludedir
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includedir
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runstatedir
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localstatedir
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sharedstatedir
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sysconfdir
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@ -896,7 +895,6 @@ datadir='${datarootdir}'
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sysconfdir='${prefix}/etc'
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sharedstatedir='${prefix}/com'
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localstatedir='${prefix}/var'
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runstatedir='${localstatedir}/run'
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includedir='${prefix}/include'
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oldincludedir='/usr/include'
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docdir='${datarootdir}/doc/${PACKAGE_TARNAME}'
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@ -1149,15 +1147,6 @@ do
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| -silent | --silent | --silen | --sile | --sil)
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silent=yes ;;
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-runstatedir | --runstatedir | --runstatedi | --runstated \
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| --runstate | --runstat | --runsta | --runst | --runs \
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| --run | --ru | --r)
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ac_prev=runstatedir ;;
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-runstatedir=* | --runstatedir=* | --runstatedi=* | --runstated=* \
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| --runstate=* | --runstat=* | --runsta=* | --runst=* | --runs=* \
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| --run=* | --ru=* | --r=*)
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runstatedir=$ac_optarg ;;
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-sbindir | --sbindir | --sbindi | --sbind | --sbin | --sbi | --sb)
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ac_prev=sbindir ;;
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-sbindir=* | --sbindir=* | --sbindi=* | --sbind=* | --sbin=* \
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@ -1295,7 +1284,7 @@ fi
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for ac_var in exec_prefix prefix bindir sbindir libexecdir datarootdir \
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datadir sysconfdir sharedstatedir localstatedir includedir \
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oldincludedir docdir infodir htmldir dvidir pdfdir psdir \
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libdir localedir mandir runstatedir
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libdir localedir mandir
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do
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eval ac_val=\$$ac_var
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# Remove trailing slashes.
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@ -1448,7 +1437,6 @@ Fine tuning of the installation directories:
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--sysconfdir=DIR read-only single-machine data [PREFIX/etc]
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--sharedstatedir=DIR modifiable architecture-independent data [PREFIX/com]
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--localstatedir=DIR modifiable single-machine data [PREFIX/var]
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--runstatedir=DIR modifiable per-process data [LOCALSTATEDIR/run]
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--libdir=DIR object code libraries [EPREFIX/lib]
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--includedir=DIR C header files [PREFIX/include]
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--oldincludedir=DIR C header files for non-gcc [/usr/include]
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@ -10303,6 +10291,7 @@ fi
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if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
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if test -n "$ac_tool_prefix"; then
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# Extract the first word of "${ac_tool_prefix}pkg-config", so it can be a program name with args.
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@ -11561,7 +11550,7 @@ for ac_func in alarm accept4 setitimer getitimer bind_textdomain_codeset chown \
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posix_fallocate posix_fadvise posix_spawn posix_spawnp pread preadv preadv2 \
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pthread_condattr_setclock pthread_init pthread_kill putenv pwrite pwritev pwritev2 \
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readlink readlinkat readv realpath renameat \
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sem_open sem_timedwait sem_getvalue sem_unlink sendfile setegid seteuid \
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sem_open sem_timedwait sem_getvalue sem_unlink sendfile setegid setenv seteuid \
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setgid sethostname \
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setlocale setregid setreuid setresuid setresgid setsid setpgid setpgrp setpriority setuid setvbuf \
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sched_get_priority_max sched_setaffinity sched_setscheduler sched_setparam \
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@ -3600,7 +3600,7 @@ AC_CHECK_FUNCS(alarm accept4 setitimer getitimer bind_textdomain_codeset chown \
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posix_fallocate posix_fadvise posix_spawn posix_spawnp pread preadv preadv2 \
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pthread_condattr_setclock pthread_init pthread_kill putenv pwrite pwritev pwritev2 \
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readlink readlinkat readv realpath renameat \
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sem_open sem_timedwait sem_getvalue sem_unlink sendfile setegid seteuid \
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sem_open sem_timedwait sem_getvalue sem_unlink sendfile setegid setenv seteuid \
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setgid sethostname \
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setlocale setregid setreuid setresuid setresgid setsid setpgid setpgrp setpriority setuid setvbuf \
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sched_get_priority_max sched_setaffinity sched_setscheduler sched_setparam \
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@ -895,6 +895,9 @@
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/* Define to 1 if you have the `setegid' function. */
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#undef HAVE_SETEGID
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/* Define to 1 if you have the `setenv' function. */
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#undef HAVE_SETENV
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/* Define to 1 if you have the `seteuid' function. */
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#undef HAVE_SETEUID
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