2 posix1e - a python module exposing the posix acl functions
4 Copyright (C) 2002-2009, 2012, 2014, 2015 Iustin Pop <iustin@k1024.org>
6 This library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
11 This library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with this library; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
23 #define PY_SSIZE_T_CLEAN
26 #include <sys/types.h>
30 #include <acl/libacl.h>
31 #define get_perm acl_get_perm
33 #define get_perm acl_get_perm_np
36 /* Used for cpychecker: */
37 /* The checker automatically defines this preprocessor name when creating
38 the custom attribute: */
39 #if defined(WITH_CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF_ATTRIBUTE)
40 #define CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF(typename) \
41 __attribute__((cpychecker_type_object_for_typedef(typename)))
43 /* This handles the case where we're compiling with a "vanilla"
44 compiler that doesn't supply this attribute: */
45 #define CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF(typename)
48 /* The checker automatically defines this preprocessor name when creating
49 the custom attribute: */
50 #if defined(WITH_CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION_ATTRIBUTE)
51 #define CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION \
52 __attribute__((cpychecker_negative_result_sets_exception))
54 #define CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION
57 static PyTypeObject ACL_Type
58 CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF("ACL_Object");
59 static PyObject* ACL_applyto(PyObject* obj, PyObject* args);
60 static PyObject* ACL_valid(PyObject* obj, PyObject* args);
62 #ifdef HAVE_ACL_COPY_EXT
63 static PyObject* ACL_get_state(PyObject *obj, PyObject* args);
64 static PyObject* ACL_set_state(PyObject *obj, PyObject* args);
68 static PyTypeObject Entry_Type
69 CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF("Entry_Object");
70 static PyTypeObject Permset_Type
71 CPYCHECKER_TYPE_OBJECT_FOR_TYPEDEF("Permset_Object");
72 static PyObject* Permset_new(PyTypeObject* type, PyObject* args,
76 static acl_perm_t holder_ACL_EXECUTE = ACL_EXECUTE;
77 static acl_perm_t holder_ACL_READ = ACL_READ;
78 static acl_perm_t holder_ACL_WRITE = ACL_WRITE;
92 PyObject *parent_acl; /* The parent acl, so it won't run out on us */
98 PyObject *parent_entry; /* The parent entry, so it won't run out on us */
99 acl_permset_t permset;
104 /* Creation of a new ACL instance */
105 static PyObject* ACL_new(PyTypeObject* type, PyObject* args,
110 newacl = type->tp_alloc(type, 0);
115 acl = (ACL_Object*) newacl;
117 acl->acl = acl_init(0);
118 if (acl->acl == NULL) {
119 /* LCOV_EXCL_START */
120 PyErr_SetFromErrno(PyExc_IOError);
126 acl->entry_id = ACL_FIRST_ENTRY;
132 /* Initialization of a new ACL instance */
133 static int ACL_init(PyObject* obj, PyObject* args, PyObject *keywds) {
134 ACL_Object* self = (ACL_Object*) obj;
135 static char *kwlist[] = { "file", "fd", "text", "acl", "filedef",
139 #ifdef HAVE_ACL_COPY_EXT
143 char *format = "|O&OsO!O&"
147 #ifdef HAVE_ACL_COPY_EXT
155 PyObject *file = NULL;
156 PyObject *filedef = NULL;
159 ACL_Object* thesrc = NULL;
160 #ifdef HAVE_ACL_COPY_EXT
161 const void *buf = NULL;
166 if(!PyTuple_Check(args) || PyTuple_Size(args) != 0 ||
167 (keywds != NULL && PyDict_Check(keywds) && PyDict_Size(keywds) > 1)) {
168 PyErr_SetString(PyExc_ValueError, "a max of one keyword argument"
172 if(!PyArg_ParseTupleAndKeywords(args, keywds, format, kwlist,
173 PyUnicode_FSConverter, &file,
174 &fd, &text, &ACL_Type, &thesrc,
175 PyUnicode_FSConverter, &filedef
179 #ifdef HAVE_ACL_COPY_EXT
186 char *path = PyBytes_AS_STRING(file);
187 new = acl_get_file(path, ACL_TYPE_ACCESS);
188 // Set custom exception on this failure path which includes
191 PyErr_SetFromErrnoWithFilename(PyExc_IOError, path);
195 } else if(text != NULL)
196 new = acl_from_text(text);
197 else if(fd != NULL) {
199 if ((fdval = PyObject_AsFileDescriptor(fd)) != -1) {
200 new = acl_get_fd(fdval);
202 } else if(thesrc != NULL)
203 new = acl_dup(thesrc->acl);
204 else if(filedef != NULL) {
205 char *path = PyBytes_AS_STRING(filedef);
206 new = acl_get_file(path, ACL_TYPE_DEFAULT);
207 // Set custom exception on this failure path which includes
210 PyErr_SetFromErrnoWithFilename(PyExc_IOError, path);
217 new = acl_from_mode(mode);
219 #ifdef HAVE_ACL_COPY_EXT
220 else if(buf != NULL) {
221 new = acl_copy_int(buf);
229 PyErr_SetFromErrno(PyExc_IOError);
234 /* Free the old acl_t without checking for error, we don't
236 if(self->acl != NULL)
244 /* Standard type functions */
245 static void ACL_dealloc(PyObject* obj) {
246 ACL_Object *self = (ACL_Object*) obj;
247 PyObject *err_type, *err_value, *err_traceback;
249 PyErr_Fetch(&err_type, &err_value, &err_traceback);
250 if(self->acl != NULL && acl_free(self->acl) != 0)
251 PyErr_WriteUnraisable(obj); /* LCOV_EXCL_LINE */
252 PyErr_Restore(err_type, err_value, err_traceback);
253 Py_TYPE(obj)->tp_free(obj);
256 /* Converts the acl to a text format */
257 static PyObject* ACL_str(PyObject *obj) {
259 ACL_Object *self = (ACL_Object*) obj;
262 text = acl_to_text(self->acl, NULL);
264 /* LCOV_EXCL_START */
265 return PyErr_SetFromErrno(PyExc_IOError);
268 ret = PyUnicode_FromString(text);
269 if(acl_free(text) != 0) {
270 /* LCOV_EXCL_START */
272 return PyErr_SetFromErrno(PyExc_IOError);
279 static char __to_any_text_doc__[] =
280 "to_any_text([prefix='', separator='n', options=0])\n"
281 "Convert the ACL to a custom text format.\n"
283 "This method encapsulates the ``acl_to_any_text()`` function.\n"
284 "It allows a customized text format to be generated for the ACL. See\n"
285 ":manpage:`acl_to_any_text(3)` for more details.\n"
287 ":param string prefix: if given, this string will be pre-pended to\n"
289 ":param string separator: a single character (defaults to '\\n'); this will"
290 " be used to separate the entries in the ACL\n"
291 ":param options: a bitwise combination of:\n\n"
292 " - :py:data:`TEXT_ABBREVIATE`: use 'u' instead of 'user', 'g' \n"
293 " instead of 'group', etc.\n"
294 " - :py:data:`TEXT_NUMERIC_IDS`: User and group IDs are included as\n"
295 " decimal numbers instead of names\n"
296 " - :py:data:`TEXT_SOME_EFFECTIVE`: Include comments denoting the\n"
297 " effective permissions when some are masked\n"
298 " - :py:data:`TEXT_ALL_EFFECTIVE`: Include comments after all ACL\n"
299 " entries affected by an ACL_MASK entry\n"
300 " - :py:data:`TEXT_SMART_INDENT`: Used in combination with the\n"
301 " _EFFECTIVE options, this will ensure that comments are aligned\n"
302 " to the fourth tab position (assuming one tab equals eight spaces)\n"
306 /* Converts the acl to a custom text format */
307 static PyObject* ACL_to_any_text(PyObject *obj, PyObject *args,
310 ACL_Object *self = (ACL_Object*) obj;
312 const char *arg_prefix = NULL;
313 char arg_separator = '\n';
315 static char *kwlist[] = {"prefix", "separator", "options", NULL};
317 if (!PyArg_ParseTupleAndKeywords(args, kwds, "|sci", kwlist, &arg_prefix,
318 &arg_separator, &arg_options))
321 text = acl_to_any_text(self->acl, arg_prefix, arg_separator, arg_options);
323 return PyErr_SetFromErrno(PyExc_IOError); /* LCOV_EXCL_LINE */
325 ret = PyBytes_FromString(text);
326 if(acl_free(text) != 0) {
327 /* LCOV_EXCL_START */
329 return PyErr_SetFromErrno(PyExc_IOError);
335 static char __check_doc__[] =
336 "Check the ACL validity.\n"
338 "This is a non-portable, Linux specific extension that allow more\n"
339 "information to be retrieved in case an ACL is not valid than via the\n"
340 ":py:func:`valid` method.\n"
342 "This method will return either False (the ACL is valid), or a tuple\n"
343 "with two elements. The first element is one of the following\n"
345 " - :py:data:`ACL_MULTI_ERROR`: The ACL contains multiple entries that\n"
346 " have a tag type that may occur at most once\n"
347 " - :py:data:`ACL_DUPLICATE_ERROR`: The ACL contains multiple \n"
348 " :py:data:`ACL_USER` or :py:data:`ACL_GROUP` entries with the\n"
350 " - :py:data:`ACL_MISS_ERROR`: A required entry is missing\n"
351 " - :py:data:`ACL_ENTRY_ERROR`: The ACL contains an invalid entry\n"
354 "The second element of the tuple is the index of the entry that is\n"
355 "invalid (in the same order as by iterating over the ACL entry)\n"
358 /* The acl_check method */
359 static PyObject* ACL_check(PyObject* obj, PyObject* args) {
360 ACL_Object *self = (ACL_Object*) obj;
364 if((result = acl_check(self->acl, &eindex)) == -1)
365 return PyErr_SetFromErrno(PyExc_IOError); /* LCOV_EXCL_LINE */
369 return Py_BuildValue("(ii)", result, eindex);
372 /* Implementation of the rich compare for ACLs */
373 static PyObject* ACL_richcompare(PyObject* o1, PyObject* o2, int op) {
374 ACL_Object *acl1, *acl2;
378 if(!PyObject_IsInstance(o2, (PyObject*)&ACL_Type)) {
383 PyErr_SetString(PyExc_TypeError, "can only compare to an ACL");
387 acl1 = (ACL_Object*)o1;
388 acl2 = (ACL_Object*)o2;
389 if((n=acl_cmp(acl1->acl, acl2->acl))==-1)
390 return PyErr_SetFromErrno(PyExc_IOError); /* LCOV_EXCL_LINE */
393 ret = n == 0 ? Py_True : Py_False;
396 ret = n == 1 ? Py_True : Py_False;
399 PyErr_SetString(PyExc_TypeError, "ACLs are not orderable");
406 static char __equiv_mode_doc__[] =
407 "Return the octal mode the ACL is equivalent to.\n"
409 "This is a non-portable, Linux specific extension that checks\n"
410 "if the ACL is a basic ACL and returns the corresponding mode.\n"
413 ":raise IOError: An IOerror exception will be raised if the ACL is\n"
414 " an extended ACL.\n"
417 /* The acl_equiv_mode method */
418 static PyObject* ACL_equiv_mode(PyObject* obj, PyObject* args) {
419 ACL_Object *self = (ACL_Object*) obj;
422 if(acl_equiv_mode(self->acl, &mode) == -1)
423 return PyErr_SetFromErrno(PyExc_IOError); /* LCOV_EXCL_LINE */
424 return PyLong_FromLong(mode);
429 static char __applyto_doc__[] =
430 "applyto(item[, flag=ACL_TYPE_ACCESS])\n"
431 "Apply the ACL to a file or filehandle.\n"
433 ":param item: either a filename or a file-like object or an integer;\n"
434 " this represents the filesystem object on which to act\n"
435 ":param flag: optional flag representing the type of ACL to set, either\n"
436 " :py:data:`ACL_TYPE_ACCESS` (default) or :py:data:`ACL_TYPE_DEFAULT`\n"
439 /* Applies the ACL to a file */
440 static PyObject* ACL_applyto(PyObject* obj, PyObject* args) {
441 ACL_Object *self = (ACL_Object*) obj;
442 PyObject *target, *tmp;
443 acl_type_t type = ACL_TYPE_ACCESS;
447 if (!PyArg_ParseTuple(args, "O|I", &target, &type))
449 if ((fd = PyObject_AsFileDescriptor(target)) != -1) {
450 if((nret = acl_set_fd(fd, self->acl)) == -1) {
451 PyErr_SetFromErrno(PyExc_IOError);
454 // PyObject_AsFileDescriptor sets an error when failing, so clear
455 // it such that further code works; some method lookups fail if an
456 // error already occured when called, which breaks at least
457 // PyOS_FSPath (called by FSConverter).
459 if(PyUnicode_FSConverter(target, &tmp)) {
460 char *filename = PyBytes_AS_STRING(tmp);
461 if ((nret = acl_set_file(filename, type, self->acl)) == -1) {
462 PyErr_SetFromErrnoWithFilename(PyExc_IOError, filename);
476 static char __valid_doc__[] =
477 "Test the ACL for validity.\n"
479 "This method tests the ACL to see if it is a valid ACL\n"
480 "in terms of the file-system. More precisely, it checks that:\n"
482 "The ACL contains exactly one entry with each of the\n"
483 ":py:data:`ACL_USER_OBJ`, :py:data:`ACL_GROUP_OBJ`, and \n"
484 ":py:data:`ACL_OTHER` tag types. Entries\n"
485 "with :py:data:`ACL_USER` and :py:data:`ACL_GROUP` tag types may\n"
486 "appear zero or more\n"
487 "times in an ACL. An ACL that contains entries of :py:data:`ACL_USER` or\n"
488 ":py:data:`ACL_GROUP` tag types must contain exactly one entry of the \n"
489 ":py:data:`ACL_MASK` tag type. If an ACL contains no entries of\n"
490 ":py:data:`ACL_USER` or :py:data:`ACL_GROUP` tag types, the\n"
491 ":py:data:`ACL_MASK` entry is optional.\n"
493 "All user ID qualifiers must be unique among all entries of\n"
494 "the :py:data:`ACL_USER` tag type, and all group IDs must be unique\n"
495 "among all entries of :py:data:`ACL_GROUP` tag type.\n"
497 "The method will return 1 for a valid ACL and 0 for an invalid one.\n"
498 "This has been chosen because the specification for\n"
499 ":manpage:`acl_valid(3)`\n"
500 "in the POSIX.1e standard documents only one possible value for errno\n"
501 "in case of an invalid ACL, so we can't differentiate between\n"
502 "classes of errors. Other suggestions are welcome.\n"
508 /* Checks the ACL for validity */
509 static PyObject* ACL_valid(PyObject* obj, PyObject* args) {
510 ACL_Object *self = (ACL_Object*) obj;
512 if(acl_valid(self->acl) == -1) {
519 #ifdef HAVE_ACL_COPY_EXT
520 static PyObject* ACL_get_state(PyObject *obj, PyObject* args) {
521 ACL_Object *self = (ACL_Object*) obj;
526 size = acl_size(self->acl);
528 return PyErr_SetFromErrno(PyExc_IOError); /* LCOV_EXCL_LINE */
530 if((ret = PyBytes_FromStringAndSize(NULL, size)) == NULL)
532 buf = PyBytes_AsString(ret);
534 if((nsize = acl_copy_ext(buf, self->acl, size)) == -1) {
535 /* LCOV_EXCL_START */
537 return PyErr_SetFromErrno(PyExc_IOError);
544 static PyObject* ACL_set_state(PyObject *obj, PyObject* args) {
545 ACL_Object *self = (ACL_Object*) obj;
550 /* Parse the argument */
551 if (!PyArg_ParseTuple(args, "y#", &buf, &bufsize))
554 /* Try to import the external representation */
555 if((ptr = acl_copy_int(buf)) == NULL)
556 return PyErr_SetFromErrno(PyExc_IOError);
558 if(self->acl != NULL) {
559 /* Ignore errors in freeing the previous acl. We already
560 allocated the new acl, and the state of the previous one is
561 suspect if freeing failed (in Linux's libacl, deallocating
562 a valid ACL can't actually happen, so this path is
564 acl_free(self->acl); /* LCOV_EXCL_LINE */
575 /* tp_iter for the ACL type; since it can be iterated only
576 * destructively, the type is its iterator
578 static PyObject* ACL_iter(PyObject *obj) {
579 ACL_Object *self = (ACL_Object*)obj;
580 self->entry_id = ACL_FIRST_ENTRY;
585 /* the tp_iternext function for the ACL type */
586 static PyObject* ACL_iternext(PyObject *obj) {
587 ACL_Object *self = (ACL_Object*)obj;
588 acl_entry_t the_entry_t;
589 Entry_Object *the_entry_obj;
592 nerr = acl_get_entry(self->acl, self->entry_id, &the_entry_t);
593 self->entry_id = ACL_NEXT_ENTRY;
595 return PyErr_SetFromErrno(PyExc_IOError); /* LCOV_EXCL_LINE */
597 /* Docs says this is not needed */
598 /*PyErr_SetObject(PyExc_StopIteration, Py_None);*/
602 the_entry_obj = (Entry_Object*) PyType_GenericNew(&Entry_Type, NULL, NULL);
603 if(the_entry_obj == NULL)
606 the_entry_obj->entry = the_entry_t;
608 the_entry_obj->parent_acl = obj;
609 Py_INCREF(obj); /* For the reference we have in entry->parent */
611 return (PyObject*)the_entry_obj;
614 static char __ACL_delete_entry_doc__[] =
615 "delete_entry(entry)\n"
616 "Deletes an entry from the ACL.\n"
618 ".. note:: Only available with level 2.\n"
620 ":param entry: the Entry object which should be deleted; note that after\n"
621 " this function is called, that object is unusable any longer\n"
622 " and should be deleted\n"
625 /* Deletes an entry from the ACL */
626 static PyObject* ACL_delete_entry(PyObject *obj, PyObject *args) {
627 ACL_Object *self = (ACL_Object*)obj;
630 if (!PyArg_ParseTuple(args, "O!", &Entry_Type, &e))
633 if (e->parent_acl != obj) {
634 PyErr_SetString(PyExc_ValueError,
635 "Can't remove un-owned entry");
638 if(acl_delete_entry(self->acl, e->entry) == -1)
639 return PyErr_SetFromErrno(PyExc_IOError);
644 static char __ACL_calc_mask_doc__[] =
645 "Compute the file group class mask.\n"
647 "The calc_mask() method calculates and sets the permissions \n"
648 "associated with the :py:data:`ACL_MASK` Entry of the ACL.\n"
649 "The value of the new permissions is the union of the permissions \n"
650 "granted by all entries of tag type :py:data:`ACL_GROUP`, \n"
651 ":py:data:`ACL_GROUP_OBJ`, or \n"
652 ":py:data:`ACL_USER`. If the ACL already contains an :py:data:`ACL_MASK`\n"
654 "permissions are overwritten; if it does not contain an \n"
655 ":py:data:`ACL_MASK` Entry, one is added.\n"
657 "The order of existing entries in the ACL is undefined after this \n"
661 /* Updates the mask entry in the ACL */
662 static PyObject* ACL_calc_mask(PyObject *obj, PyObject *args) {
663 ACL_Object *self = (ACL_Object*)obj;
665 if(acl_calc_mask(&self->acl) == -1)
666 return PyErr_SetFromErrno(PyExc_IOError);
671 static char __ACL_append_doc__[] =
673 "Append a new Entry to the ACL and return it.\n"
675 "This is a convenience function to create a new Entry \n"
676 "and append it to the ACL.\n"
677 "If a parameter of type Entry instance is given, the \n"
678 "entry will be a copy of that one (as if copied with \n"
679 ":py:func:`Entry.copy`), otherwise, the new entry will be empty.\n"
681 ":rtype: :py:class:`Entry`\n"
682 ":returns: the newly created entry\n"
685 /* Convenience method to create a new Entry */
686 static PyObject* ACL_append(PyObject *obj, PyObject *args) {
687 Entry_Object* newentry;
688 Entry_Object* oldentry = NULL;
691 if (!PyArg_ParseTuple(args, "|O!", &Entry_Type, &oldentry)) {
695 PyObject *new_arglist = Py_BuildValue("(O)", obj);
696 if (new_arglist == NULL) {
699 newentry = (Entry_Object*) PyObject_CallObject((PyObject*)&Entry_Type, new_arglist);
700 Py_DECREF(new_arglist);
701 if(newentry == NULL) {
705 if(oldentry != NULL) {
706 nret = acl_copy_entry(newentry->entry, oldentry->entry);
708 /* LCOV_EXCL_START */
710 return PyErr_SetFromErrno(PyExc_IOError);
715 return (PyObject*)newentry;
718 /***** Entry type *****/
728 /* Pre-declaring the function is more friendly to cpychecker, sigh. */
729 static int get_tag_qualifier(acl_entry_t entry, tag_qual *tq)
730 CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
732 /* Helper function to get the tag and qualifier of an Entry at the
733 same time. This is "needed" because the acl_get_qualifier function
734 returns a pointer to different types, based on the tag value, and
735 thus it's not straightforward to get the right type.
737 It sets a Python exception if an error occurs, and returns -1 in
738 this case. If successful, the tag is set to the tag type, the
739 qualifier (if any) to either the uid or the gid entry in the
740 tag_qual structure, and the return value is 0.
742 static int get_tag_qualifier(acl_entry_t entry, tag_qual *tq) {
745 if(acl_get_tag_type(entry, &tq->tag) == -1) {
746 /* LCOV_EXCL_START */
747 PyErr_SetFromErrno(PyExc_IOError);
751 if (tq->tag == ACL_USER || tq->tag == ACL_GROUP) {
752 if((p = acl_get_qualifier(entry)) == NULL) {
753 /* LCOV_EXCL_START */
754 PyErr_SetFromErrno(PyExc_IOError);
758 if (tq->tag == ACL_USER) {
759 tq->uid = *(uid_t*)p;
761 tq->gid = *(gid_t*)p;
768 #define ENTRY_SET_CHECK(self, attr, value) \
769 if (value == NULL) { \
770 PyErr_SetString(PyExc_TypeError, \
771 attr " deletion is not supported"); \
775 /* Creation of a new Entry instance */
776 static PyObject* Entry_new(PyTypeObject* type, PyObject* args,
780 ACL_Object* parent = NULL;
782 if (!PyArg_ParseTuple(args, "O!", &ACL_Type, &parent))
785 newentry = PyType_GenericNew(type, args, keywds);
787 if(newentry == NULL) {
791 entry = (Entry_Object*)newentry;
793 if(acl_create_entry(&parent->acl, &entry->entry) == -1) {
794 /* LCOV_EXCL_START */
795 PyErr_SetFromErrno(PyExc_IOError);
801 entry->parent_acl = (PyObject*)parent;
805 /* Initialization of a new Entry instance */
806 static int Entry_init(PyObject* obj, PyObject* args, PyObject *keywds) {
807 Entry_Object* self = (Entry_Object*) obj;
808 ACL_Object* parent = NULL;
810 if (!PyArg_ParseTuple(args, "O!", &ACL_Type, &parent))
813 if ((PyObject*)parent != self->parent_acl) {
814 PyErr_SetString(PyExc_ValueError,
815 "Can't reinitialize with a different parent");
821 /* Free the Entry instance */
822 static void Entry_dealloc(PyObject* obj) {
823 Entry_Object *self = (Entry_Object*) obj;
824 PyObject *err_type, *err_value, *err_traceback;
826 PyErr_Fetch(&err_type, &err_value, &err_traceback);
827 if(self->parent_acl != NULL) {
828 Py_DECREF(self->parent_acl);
829 self->parent_acl = NULL;
831 PyErr_Restore(err_type, err_value, err_traceback);
832 Py_TYPE(obj)->tp_free(obj);
835 /* Converts the entry to a text format */
836 static PyObject* Entry_str(PyObject *obj) {
837 PyObject *format, *kind;
838 Entry_Object *self = (Entry_Object*) obj;
841 if(get_tag_qualifier(self->entry, &tq) < 0) {
845 format = PyUnicode_FromString("ACL entry for ");
849 case ACL_UNDEFINED_TAG:
850 kind = PyUnicode_FromString("undefined type");
853 kind = PyUnicode_FromString("the owner");
856 kind = PyUnicode_FromString("the group");
859 kind = PyUnicode_FromString("the others");
862 /* FIXME: here and in the group case, we're formatting with
863 unsigned, because there's no way to automatically determine
864 the signed-ness of the types; on Linux(glibc) they're
865 unsigned, so we'll go along with that */
866 kind = PyUnicode_FromFormat("user with uid %u", tq.uid);
869 kind = PyUnicode_FromFormat("group with gid %u", tq.gid);
872 kind = PyUnicode_FromString("the mask");
874 default: /* LCOV_EXCL_START */
875 kind = PyUnicode_FromString("UNKNOWN_TAG_TYPE!");
880 /* LCOV_EXCL_START */
885 PyObject *ret = PyUnicode_Concat(format, kind);
891 /* Sets the tag type of the entry */
892 static int Entry_set_tag_type(PyObject* obj, PyObject* value, void* arg) {
893 Entry_Object *self = (Entry_Object*) obj;
895 ENTRY_SET_CHECK(self, "tag type", value);
897 if(!PyLong_Check(value)) {
898 PyErr_SetString(PyExc_TypeError,
899 "tag type must be integer");
902 if(acl_set_tag_type(self->entry, (acl_tag_t)PyLong_AsLong(value)) == -1) {
903 PyErr_SetFromErrno(PyExc_IOError);
910 /* Returns the tag type of the entry */
911 static PyObject* Entry_get_tag_type(PyObject *obj, void* arg) {
912 Entry_Object *self = (Entry_Object*) obj;
915 if(acl_get_tag_type(self->entry, &value) == -1) {
916 /* LCOV_EXCL_START */
917 PyErr_SetFromErrno(PyExc_IOError);
922 return PyLong_FromLong(value);
925 /* Sets the qualifier (either uid_t or gid_t) for the entry,
926 * usable only if the tag type if ACL_USER or ACL_GROUP
928 static int Entry_set_qualifier(PyObject* obj, PyObject* value, void* arg) {
929 Entry_Object *self = (Entry_Object*) obj;
930 unsigned long uidgid;
936 ENTRY_SET_CHECK(self, "qualifier", value);
938 if(!PyLong_Check(value)) {
939 PyErr_SetString(PyExc_TypeError,
940 "qualifier must be integer");
943 /* This is the negative value check, and larger than long
944 check. If uid_t/gid_t are long-sized, this is enough to check
945 for both over and underflow. */
946 if((uidgid = PyLong_AsUnsignedLong(value)) == (unsigned long) -1) {
947 if(PyErr_Occurred() != NULL) {
951 /* Due to how acl_set_qualifier takes its argument, we have to do
952 this ugly dance with two variables and a pointer that will
953 point to one of them. */
954 if(acl_get_tag_type(self->entry, &tag) == -1) {
955 /* LCOV_EXCL_START */
956 PyErr_SetFromErrno(PyExc_IOError);
962 /* This is an extra overflow check, in case uid_t/gid_t are
963 int-sized (and int size smaller than long size). */
966 if((unsigned long)uid != uidgid) {
967 PyErr_SetString(PyExc_OverflowError, "Can't assign given qualifier");
974 if((unsigned long)gid != uidgid) {
975 PyErr_SetString(PyExc_OverflowError, "Can't assign given qualifier");
982 PyErr_SetString(PyExc_TypeError,
983 "Can only set qualifiers on ACL_USER or ACL_GROUP entries");
986 if(acl_set_qualifier(self->entry, p) == -1) {
987 /* LCOV_EXCL_START */
988 PyErr_SetFromErrno(PyExc_IOError);
996 /* Returns the qualifier of the entry */
997 static PyObject* Entry_get_qualifier(PyObject *obj, void* arg) {
998 Entry_Object *self = (Entry_Object*) obj;
1002 if(get_tag_qualifier(self->entry, &tq) < 0) {
1005 if (tq.tag == ACL_USER) {
1007 } else if (tq.tag == ACL_GROUP) {
1010 PyErr_SetString(PyExc_TypeError,
1011 "Given entry doesn't have an user or"
1015 return PyLong_FromUnsignedLong(value);
1018 /* Returns the parent ACL of the entry */
1019 static PyObject* Entry_get_parent(PyObject *obj, void* arg) {
1020 Entry_Object *self = (Entry_Object*) obj;
1022 Py_INCREF(self->parent_acl);
1023 return self->parent_acl;
1026 /* Returns the a new Permset representing the permset of the entry
1027 * FIXME: Should return a new reference to the same object, which
1028 * should be created at init time!
1030 static PyObject* Entry_get_permset(PyObject *obj, void* arg) {
1033 PyObject *perm_arglist = Py_BuildValue("(O)", obj);
1034 if (perm_arglist == NULL) {
1037 p = PyObject_CallObject((PyObject*)&Permset_Type, perm_arglist);
1038 Py_DECREF(perm_arglist);
1042 /* Sets the permset of the entry to the passed Permset */
1043 static int Entry_set_permset(PyObject* obj, PyObject* value, void* arg) {
1044 Entry_Object *self = (Entry_Object*)obj;
1047 ENTRY_SET_CHECK(self, "permset", value);
1049 if(!PyObject_IsInstance(value, (PyObject*)&Permset_Type)) {
1050 PyErr_SetString(PyExc_TypeError, "argument 1 must be posix1e.Permset");
1053 p = (Permset_Object*)value;
1054 if(acl_set_permset(self->entry, p->permset) == -1) {
1055 /* LCOV_EXCL_START */
1056 PyErr_SetFromErrno(PyExc_IOError);
1058 /* LCOV_EXCL_STOP */
1063 static char __Entry_copy_doc__[] =
1065 "Copies an ACL entry.\n"
1067 "This method sets all the parameters to those of another\n"
1068 "entry (either of the same ACL or belonging to another ACL).\n"
1070 ":param Entry src: instance of type Entry\n"
1073 /* Sets all the entry parameters to another entry */
1074 static PyObject* Entry_copy(PyObject *obj, PyObject *args) {
1075 Entry_Object *self = (Entry_Object*)obj;
1076 Entry_Object *other;
1078 if(!PyArg_ParseTuple(args, "O!", &Entry_Type, &other))
1081 if(acl_copy_entry(self->entry, other->entry) == -1)
1082 return PyErr_SetFromErrno(PyExc_IOError); /* LCOV_EXCL_LINE */
1087 /**** Permset type *****/
1089 /* Creation of a new Permset instance */
1090 static PyObject* Permset_new(PyTypeObject* type, PyObject* args,
1092 PyObject* newpermset;
1093 Permset_Object* permset;
1094 Entry_Object* parent = NULL;
1096 if (!PyArg_ParseTuple(args, "O!", &Entry_Type, &parent)) {
1100 newpermset = PyType_GenericNew(type, args, keywds);
1102 if(newpermset == NULL) {
1106 permset = (Permset_Object*)newpermset;
1108 if(acl_get_permset(parent->entry, &permset->permset) == -1) {
1109 PyErr_SetFromErrno(PyExc_IOError);
1110 Py_DECREF(newpermset);
1114 permset->parent_entry = (PyObject*)parent;
1120 /* Initialization of a new Permset instance */
1121 static int Permset_init(PyObject* obj, PyObject* args, PyObject *keywds) {
1122 Permset_Object* self = (Permset_Object*) obj;
1123 Entry_Object* parent = NULL;
1125 if (!PyArg_ParseTuple(args, "O!", &Entry_Type, &parent))
1128 if ((PyObject*)parent != self->parent_entry) {
1129 PyErr_SetString(PyExc_ValueError,
1130 "Can't reinitialize with a different parent");
1137 /* Free the Permset instance */
1138 static void Permset_dealloc(PyObject* obj) {
1139 Permset_Object *self = (Permset_Object*) obj;
1140 PyObject *err_type, *err_value, *err_traceback;
1142 PyErr_Fetch(&err_type, &err_value, &err_traceback);
1143 if(self->parent_entry != NULL) {
1144 Py_DECREF(self->parent_entry);
1145 self->parent_entry = NULL;
1147 PyErr_Restore(err_type, err_value, err_traceback);
1148 Py_TYPE(obj)->tp_free((PyObject *)obj);
1151 /* Permset string representation */
1152 static PyObject* Permset_str(PyObject *obj) {
1153 Permset_Object *self = (Permset_Object*) obj;
1156 pstr[0] = get_perm(self->permset, ACL_READ) ? 'r' : '-';
1157 pstr[1] = get_perm(self->permset, ACL_WRITE) ? 'w' : '-';
1158 pstr[2] = get_perm(self->permset, ACL_EXECUTE) ? 'x' : '-';
1159 return PyUnicode_FromStringAndSize(pstr, 3);
1162 static char __Permset_clear_doc__[] =
1163 "Clears all permissions from the permission set.\n"
1166 /* Clears all permissions from the permset */
1167 static PyObject* Permset_clear(PyObject* obj, PyObject* args) {
1168 Permset_Object *self = (Permset_Object*) obj;
1170 if(acl_clear_perms(self->permset) == -1)
1171 return PyErr_SetFromErrno(PyExc_IOError); /* LCOV_EXCL_LINE */
1176 static PyObject* Permset_get_right(PyObject *obj, void* arg) {
1177 Permset_Object *self = (Permset_Object*) obj;
1179 if(get_perm(self->permset, *(acl_perm_t*)arg)) {
1186 static int Permset_set_right(PyObject* obj, PyObject* value, void* arg) {
1187 Permset_Object *self = (Permset_Object*) obj;
1191 if(!PyLong_Check(value)) {
1192 PyErr_SetString(PyExc_ValueError, "invalid argument, an integer"
1196 on = PyLong_AsLong(value);
1198 nerr = acl_add_perm(self->permset, *(acl_perm_t*)arg);
1200 nerr = acl_delete_perm(self->permset, *(acl_perm_t*)arg);
1202 /* LCOV_EXCL_START */
1203 PyErr_SetFromErrno(PyExc_IOError);
1205 /* LCOV_EXCL_STOP */
1210 static char __Permset_add_doc__[] =
1212 "Add a permission to the permission set.\n"
1214 "This function adds the permission contained in \n"
1215 "the argument perm to the permission set. An attempt \n"
1216 "to add a permission that is already contained in the \n"
1217 "permission set is not considered an error.\n"
1219 ":param perm: a permission (:py:data:`ACL_WRITE`, :py:data:`ACL_READ`,\n"
1220 " :py:data:`ACL_EXECUTE`, ...)\n"
1221 ":raises IOError: in case the argument is not a valid descriptor\n"
1224 static PyObject* Permset_add(PyObject* obj, PyObject* args) {
1225 Permset_Object *self = (Permset_Object*) obj;
1228 if (!PyArg_ParseTuple(args, "i", &right))
1231 if(acl_add_perm(self->permset, (acl_perm_t) right) == -1)
1232 return PyErr_SetFromErrno(PyExc_IOError); /* LCOV_EXCL_LINE */
1237 static char __Permset_delete_doc__[] =
1239 "Delete a permission from the permission set.\n"
1241 "This function deletes the permission contained in \n"
1242 "the argument perm from the permission set. An attempt \n"
1243 "to delete a permission that is not contained in the \n"
1244 "permission set is not considered an error.\n"
1246 ":param perm: a permission (:py:data:`ACL_WRITE`, :py:data:`ACL_READ`,\n"
1247 " :py:data:`ACL_EXECUTE`, ...)\n"
1248 ":raises IOError: in case the argument is not a valid descriptor\n"
1251 static PyObject* Permset_delete(PyObject* obj, PyObject* args) {
1252 Permset_Object *self = (Permset_Object*) obj;
1255 if (!PyArg_ParseTuple(args, "i", &right))
1258 if(acl_delete_perm(self->permset, (acl_perm_t) right) == -1)
1259 return PyErr_SetFromErrno(PyExc_IOError); /* LCOV_EXCL_LINE */
1264 static char __Permset_test_doc__[] =
1266 "Test if a permission exists in the permission set.\n"
1268 "The test() function tests if the permission represented by\n"
1269 "the argument perm exists in the permission set.\n"
1271 ":param perm: a permission (:py:data:`ACL_WRITE`, :py:data:`ACL_READ`,\n"
1272 " :py:data:`ACL_EXECUTE`, ...)\n"
1274 ":raises IOError: in case the argument is not a valid descriptor\n"
1277 static PyObject* Permset_test(PyObject* obj, PyObject* args) {
1278 Permset_Object *self = (Permset_Object*) obj;
1282 if (!PyArg_ParseTuple(args, "i", &right))
1285 ret = get_perm(self->permset, (acl_perm_t) right);
1287 return PyErr_SetFromErrno(PyExc_IOError); /* LCOV_EXCL_LINE */
1298 static char __ACL_Type_doc__[] =
1299 "Type which represents a POSIX ACL\n"
1301 ".. note:: only one keyword parameter should be provided\n"
1303 ":param string/bytes/path-like file: creates an ACL representing\n"
1304 " the access ACL of the specified file or directory.\n"
1305 ":param string/bytes/path-like filedef: creates an ACL representing\n"
1306 " the default ACL of the given directory.\n"
1307 ":param int/iostream fd: creates an ACL representing\n"
1308 " the access ACL of the given file descriptor.\n"
1309 ":param string text: creates an ACL from a \n"
1310 " textual description; note the ACL must be valid, which\n"
1311 " means including a mask for extended ACLs, similar to\n"
1312 " ``setfacl --no-mask``\n"
1313 ":param ACL acl: creates a copy of an existing ACL instance.\n"
1314 ":param int mode: creates an ACL from a numeric mode\n"
1315 " (e.g. ``mode=0644``); this is valid only when the C library\n"
1316 " provides the ``acl_from_mode call``, and\n"
1317 " note that no validation is done on the given value.\n"
1318 ":param bytes data: creates an ACL from a serialised form,\n"
1319 " as provided by calling ``__getstate__()`` on an existing ACL\n"
1321 "If no parameters are passed, an empty ACL will be created; this\n"
1322 "makes sense only when your OS supports ACL modification\n"
1323 "(i.e. it implements full POSIX.1e support), otherwise the ACL won't\n"
1327 /* ACL type methods */
1328 static PyMethodDef ACL_methods[] = {
1329 {"applyto", ACL_applyto, METH_VARARGS, __applyto_doc__},
1330 {"valid", ACL_valid, METH_NOARGS, __valid_doc__},
1332 {"to_any_text", (PyCFunction)ACL_to_any_text, METH_VARARGS | METH_KEYWORDS,
1333 __to_any_text_doc__},
1334 {"check", ACL_check, METH_NOARGS, __check_doc__},
1335 {"equiv_mode", ACL_equiv_mode, METH_NOARGS, __equiv_mode_doc__},
1337 #ifdef HAVE_ACL_COPY_EXT
1338 {"__getstate__", ACL_get_state, METH_NOARGS,
1339 "Dumps the ACL to an external format."},
1340 {"__setstate__", ACL_set_state, METH_VARARGS,
1341 "Loads the ACL from an external format."},
1344 {"delete_entry", ACL_delete_entry, METH_VARARGS, __ACL_delete_entry_doc__},
1345 {"calc_mask", ACL_calc_mask, METH_NOARGS, __ACL_calc_mask_doc__},
1346 {"append", ACL_append, METH_VARARGS, __ACL_append_doc__},
1348 {NULL, NULL, 0, NULL}
1352 /* The definition of the ACL Type */
1353 static PyTypeObject ACL_Type = {
1354 PyVarObject_HEAD_INIT(NULL, 0)
1355 .tp_name = "posix1e.ACL",
1356 .tp_basicsize = sizeof(ACL_Object),
1358 .tp_dealloc = ACL_dealloc,
1360 .tp_flags = Py_TPFLAGS_DEFAULT,
1361 .tp_doc = __ACL_Type_doc__,
1363 .tp_richcompare = ACL_richcompare,
1366 .tp_iter = ACL_iter,
1367 .tp_iternext = ACL_iternext,
1369 .tp_methods = ACL_methods,
1370 .tp_init = ACL_init,
1376 /* Entry type methods */
1377 static PyMethodDef Entry_methods[] = {
1378 {"copy", Entry_copy, METH_VARARGS, __Entry_copy_doc__},
1379 {NULL, NULL, 0, NULL}
1382 static char __Entry_tagtype_doc__[] =
1383 "The tag type of the current entry\n"
1386 " - :py:data:`ACL_UNDEFINED_TAG`\n"
1387 " - :py:data:`ACL_USER_OBJ`\n"
1388 " - :py:data:`ACL_USER`\n"
1389 " - :py:data:`ACL_GROUP_OBJ`\n"
1390 " - :py:data:`ACL_GROUP`\n"
1391 " - :py:data:`ACL_MASK`\n"
1392 " - :py:data:`ACL_OTHER`\n"
1395 static char __Entry_qualifier_doc__[] =
1396 "The qualifier of the current entry\n"
1398 "If the tag type is :py:data:`ACL_USER`, this should be a user id.\n"
1399 "If the tag type if :py:data:`ACL_GROUP`, this should be a group id.\n"
1400 "Else it doesn't matter.\n"
1403 static char __Entry_parent_doc__[] =
1404 "The parent ACL of this entry\n"
1407 static char __Entry_permset_doc__[] =
1408 "The permission set of this ACL entry\n"
1412 static PyGetSetDef Entry_getsets[] = {
1413 {"tag_type", Entry_get_tag_type, Entry_set_tag_type,
1414 __Entry_tagtype_doc__},
1415 {"qualifier", Entry_get_qualifier, Entry_set_qualifier,
1416 __Entry_qualifier_doc__},
1417 {"parent", Entry_get_parent, NULL, __Entry_parent_doc__},
1418 {"permset", Entry_get_permset, Entry_set_permset, __Entry_permset_doc__},
1422 static char __Entry_Type_doc__[] =
1423 "Type which represents an entry in an ACL.\n"
1425 "The type exists only if the OS has full support for POSIX.1e\n"
1426 "Can be created either by:\n"
1428 " >>> e = posix1e.Entry(myACL) # this creates a new entry in the ACL\n"
1429 " >>> e = myACL.append() # another way for doing the same thing\n"
1433 " >>> for entry in myACL:\n"
1434 " ... print entry\n"
1436 "Note that the Entry keeps a reference to its ACL, so even if \n"
1437 "you delete the ACL, it won't be cleaned up and will continue to \n"
1438 "exist until its Entry(ies) will be deleted.\n"
1440 /* The definition of the Entry Type */
1441 static PyTypeObject Entry_Type = {
1442 PyVarObject_HEAD_INIT(NULL, 0)
1443 .tp_name = "posix1e.Entry",
1444 .tp_basicsize = sizeof(Entry_Object),
1446 .tp_dealloc = Entry_dealloc,
1447 .tp_str = Entry_str,
1448 .tp_flags = Py_TPFLAGS_DEFAULT,
1449 .tp_doc = __Entry_Type_doc__,
1450 .tp_methods = Entry_methods,
1451 .tp_getset = Entry_getsets,
1452 .tp_init = Entry_init,
1456 /* Permset type methods */
1457 static PyMethodDef Permset_methods[] = {
1458 {"clear", Permset_clear, METH_NOARGS, __Permset_clear_doc__, },
1459 {"add", Permset_add, METH_VARARGS, __Permset_add_doc__, },
1460 {"delete", Permset_delete, METH_VARARGS, __Permset_delete_doc__, },
1461 {"test", Permset_test, METH_VARARGS, __Permset_test_doc__, },
1462 {NULL, NULL, 0, NULL}
1465 static char __Permset_execute_doc__[] =
1466 "Execute permission property\n"
1468 "This is a convenience method of retrieving and setting the execute\n"
1469 "permission in the permission set; the \n"
1470 "same effect can be achieved using the functions\n"
1471 "add(), test(), delete(), and those can take any \n"
1472 "permission defined by your platform.\n"
1475 static char __Permset_read_doc__[] =
1476 "Read permission property\n"
1478 "This is a convenience method of retrieving and setting the read\n"
1479 "permission in the permission set; the \n"
1480 "same effect can be achieved using the functions\n"
1481 "add(), test(), delete(), and those can take any \n"
1482 "permission defined by your platform.\n"
1485 static char __Permset_write_doc__[] =
1486 "Write permission property\n"
1488 "This is a convenience method of retrieving and setting the write\n"
1489 "permission in the permission set; the \n"
1490 "same effect can be achieved using the functions\n"
1491 "add(), test(), delete(), and those can take any \n"
1492 "permission defined by your platform.\n"
1495 /* Permset getset */
1496 static PyGetSetDef Permset_getsets[] = {
1497 {"execute", Permset_get_right, Permset_set_right,
1498 __Permset_execute_doc__, &holder_ACL_EXECUTE},
1499 {"read", Permset_get_right, Permset_set_right,
1500 __Permset_read_doc__, &holder_ACL_READ},
1501 {"write", Permset_get_right, Permset_set_right,
1502 __Permset_write_doc__, &holder_ACL_WRITE},
1506 static char __Permset_Type_doc__[] =
1507 "Type which represents the permission set in an ACL entry\n"
1509 "The type exists only if the OS has full support for POSIX.1e\n"
1510 "Can be retrieved either by:\n\n"
1511 ">>> perms = myEntry.permset\n"
1514 ">>> perms = posix1e.Permset(myEntry)\n"
1516 "Note that the Permset keeps a reference to its Entry, so even if \n"
1517 "you delete the entry, it won't be cleaned up and will continue to \n"
1518 "exist until its Permset will be deleted.\n"
1521 /* The definition of the Permset Type */
1522 static PyTypeObject Permset_Type = {
1523 PyVarObject_HEAD_INIT(NULL, 0)
1524 .tp_name = "posix1e.Permset",
1525 .tp_basicsize = sizeof(Permset_Object),
1527 .tp_dealloc = Permset_dealloc,
1528 .tp_str = Permset_str,
1529 .tp_flags = Py_TPFLAGS_DEFAULT,
1530 .tp_doc = __Permset_Type_doc__,
1531 .tp_methods = Permset_methods,
1532 .tp_getset = Permset_getsets,
1533 .tp_init = Permset_init,
1534 .tp_new = Permset_new,
1539 /* Module methods */
1541 static char __deletedef_doc__[] =
1542 "delete_default(path)\n"
1543 "Delete the default ACL from a directory.\n"
1545 "This function deletes the default ACL associated with\n"
1546 "a directory (the ACL which will be ANDed with the mode\n"
1547 "parameter to the open, creat functions).\n"
1549 ":param string path: the directory whose default ACL should be deleted\n"
1552 /* Deletes the default ACL from a directory */
1553 static PyObject* aclmodule_delete_default(PyObject* obj, PyObject* args) {
1556 /* Parse the arguments */
1557 if (!PyArg_ParseTuple(args, "et", NULL, &filename))
1560 if(acl_delete_def_file(filename) == -1) {
1561 return PyErr_SetFromErrnoWithFilename(PyExc_IOError, filename);
1568 static char __has_extended_doc__[] =
1569 "has_extended(item)\n"
1570 "Check if a file or file handle has an extended ACL.\n"
1572 ":param item: either a file name or a file-like object or an integer;\n"
1573 " it represents the file-system object on which to act\n"
1576 /* Check for extended ACL a file or fd */
1577 static PyObject* aclmodule_has_extended(PyObject* obj, PyObject* args) {
1578 PyObject *item, *tmp;
1582 if (!PyArg_ParseTuple(args, "O", &item))
1585 if((fd = PyObject_AsFileDescriptor(item)) != -1) {
1586 if((nret = acl_extended_fd(fd)) == -1) {
1587 PyErr_SetFromErrno(PyExc_IOError);
1590 // PyObject_AsFileDescriptor sets an error when failing, so clear
1591 // it such that further code works; some method lookups fail if an
1592 // error already occured when called, which breaks at least
1593 // PyOS_FSPath (called by FSConverter).
1595 if(PyUnicode_FSConverter(item, &tmp)) {
1596 char *filename = PyBytes_AS_STRING(tmp);
1597 if ((nret = acl_extended_file(filename)) == -1) {
1598 PyErr_SetFromErrnoWithFilename(PyExc_IOError, filename);
1609 return PyBool_FromLong(nret);
1614 /* The module methods */
1615 static PyMethodDef aclmodule_methods[] = {
1616 {"delete_default", aclmodule_delete_default, METH_VARARGS,
1619 {"has_extended", aclmodule_has_extended, METH_VARARGS,
1620 __has_extended_doc__},
1622 {NULL, NULL, 0, NULL}
1625 static char __posix1e_doc__[] =
1626 "POSIX.1e ACLs manipulation\n"
1627 "==========================\n"
1629 "This module provides support for manipulating POSIX.1e ACLS\n"
1631 "Depending on the operating system support for POSIX.1e, \n"
1632 "the ACL type will have more or less capabilities:\n\n"
1633 " - level 1, only basic support, you can create\n"
1634 " ACLs from files and text descriptions;\n"
1635 " once created, the type is immutable\n"
1636 " - level 2, complete support, you can alter\n"
1637 " the ACL once it is created\n"
1639 "Also, in level 2, more types are available, corresponding\n"
1640 "to acl_entry_t (the Entry type), acl_permset_t (the Permset type).\n"
1642 "The existence of level 2 support and other extensions can be\n"
1643 "checked by the constants:\n\n"
1644 " - :py:data:`HAS_ACL_ENTRY` for level 2 and the Entry/Permset classes\n"
1645 " - :py:data:`HAS_ACL_FROM_MODE` for ``ACL(mode=...)`` usage\n"
1646 " - :py:data:`HAS_ACL_CHECK` for the :py:func:`ACL.check` function\n"
1647 " - :py:data:`HAS_EXTENDED_CHECK` for the module-level\n"
1648 " :py:func:`has_extended` function\n"
1649 " - :py:data:`HAS_EQUIV_MODE` for the :py:func:`ACL.equiv_mode` method\n"
1650 " - :py:data:`HAS_COPY_EXT` for the :py:func:`ACL.__getstate__` and\n"
1651 " :py:func:`ACL.__setstate__` functions (pickle protocol)\n"
1655 ">>> import posix1e\n"
1656 ">>> acl1 = posix1e.ACL(file=\"file.txt\") \n"
1662 ">>> b = posix1e.ACL(text=\"u::rx,g::-,o::-\")\n"
1668 ">>> b.applyto(\"file.txt\")\n"
1669 ">>> print posix1e.ACL(file=\"file.txt\")\n"
1675 ".. py:data:: ACL_USER\n\n"
1676 " Denotes a specific user entry in an ACL.\n"
1678 ".. py:data:: ACL_USER_OBJ\n\n"
1679 " Denotes the user owner entry in an ACL.\n"
1681 ".. py:data:: ACL_GROUP\n\n"
1682 " Denotes the a group entry in an ACL.\n"
1684 ".. py:data:: ACL_GROUP_OBJ\n\n"
1685 " Denotes the group owner entry in an ACL.\n"
1687 ".. py:data:: ACL_OTHER\n\n"
1688 " Denotes the 'others' entry in an ACL.\n"
1690 ".. py:data:: ACL_MASK\n\n"
1691 " Denotes the mask entry in an ACL, representing the maximum\n"
1692 " access granted other users, the owner group and other groups.\n"
1694 ".. py:data:: ACL_UNDEFINED_TAG\n\n"
1695 " An undefined tag in an ACL.\n"
1697 ".. py:data:: ACL_READ\n\n"
1698 " Read permission in a permission set.\n"
1700 ".. py:data:: ACL_WRITE\n\n"
1701 " Write permission in a permission set.\n"
1703 ".. py:data:: ACL_EXECUTE\n\n"
1704 " Execute permission in a permission set.\n"
1706 ".. py:data:: HAS_ACL_ENTRY\n\n"
1707 " denotes support for level 2 and the Entry/Permset classes\n"
1709 ".. py:data:: HAS_ACL_FROM_MODE\n\n"
1710 " denotes support for building an ACL from an octal mode\n"
1712 ".. py:data:: HAS_ACL_CHECK\n\n"
1713 " denotes support for extended checks of an ACL's validity\n"
1715 ".. py:data:: HAS_EXTENDED_CHECK\n\n"
1716 " denotes support for checking whether an ACL is basic or extended\n"
1718 ".. py:data:: HAS_EQUIV_MODE\n\n"
1719 " denotes support for the equiv_mode function\n"
1721 ".. py:data:: HAS_COPY_EXT\n\n"
1722 " denotes support for __getstate__()/__setstate__() on an ACL\n"
1726 static struct PyModuleDef posix1emodule = {
1727 PyModuleDef_HEAD_INIT,
1728 .m_name = "posix1e",
1729 .m_doc = __posix1e_doc__,
1731 .m_methods = aclmodule_methods,
1735 PyInit_posix1e(void)
1739 if(PyType_Ready(&ACL_Type) < 0)
1743 if(PyType_Ready(&Entry_Type) < 0)
1746 if(PyType_Ready(&Permset_Type) < 0)
1750 m = PyModule_Create(&posix1emodule);
1754 d = PyModule_GetDict(m);
1758 Py_INCREF(&ACL_Type);
1759 if (PyDict_SetItemString(d, "ACL",
1760 (PyObject *) &ACL_Type) < 0)
1763 /* 23.3.6 acl_type_t values */
1764 PyModule_AddIntConstant(m, "ACL_TYPE_ACCESS", ACL_TYPE_ACCESS);
1765 PyModule_AddIntConstant(m, "ACL_TYPE_DEFAULT", ACL_TYPE_DEFAULT);
1769 Py_INCREF(&Entry_Type);
1770 if (PyDict_SetItemString(d, "Entry",
1771 (PyObject *) &Entry_Type) < 0)
1774 Py_INCREF(&Permset_Type);
1775 if (PyDict_SetItemString(d, "Permset",
1776 (PyObject *) &Permset_Type) < 0)
1779 /* 23.2.2 acl_perm_t values */
1780 PyModule_AddIntConstant(m, "ACL_READ", ACL_READ);
1781 PyModule_AddIntConstant(m, "ACL_WRITE", ACL_WRITE);
1782 PyModule_AddIntConstant(m, "ACL_EXECUTE", ACL_EXECUTE);
1784 /* 23.2.5 acl_tag_t values */
1785 PyModule_AddIntConstant(m, "ACL_UNDEFINED_TAG", ACL_UNDEFINED_TAG);
1786 PyModule_AddIntConstant(m, "ACL_USER_OBJ", ACL_USER_OBJ);
1787 PyModule_AddIntConstant(m, "ACL_USER", ACL_USER);
1788 PyModule_AddIntConstant(m, "ACL_GROUP_OBJ", ACL_GROUP_OBJ);
1789 PyModule_AddIntConstant(m, "ACL_GROUP", ACL_GROUP);
1790 PyModule_AddIntConstant(m, "ACL_MASK", ACL_MASK);
1791 PyModule_AddIntConstant(m, "ACL_OTHER", ACL_OTHER);
1793 /* Document extended functionality via easy-to-use constants */
1794 PyModule_AddIntConstant(m, "HAS_ACL_ENTRY", 1);
1796 PyModule_AddIntConstant(m, "HAS_ACL_ENTRY", 0);
1800 /* Linux libacl specific acl_to_any_text constants */
1801 PyModule_AddIntConstant(m, "TEXT_ABBREVIATE", TEXT_ABBREVIATE);
1802 PyModule_AddIntConstant(m, "TEXT_NUMERIC_IDS", TEXT_NUMERIC_IDS);
1803 PyModule_AddIntConstant(m, "TEXT_SOME_EFFECTIVE", TEXT_SOME_EFFECTIVE);
1804 PyModule_AddIntConstant(m, "TEXT_ALL_EFFECTIVE", TEXT_ALL_EFFECTIVE);
1805 PyModule_AddIntConstant(m, "TEXT_SMART_INDENT", TEXT_SMART_INDENT);
1807 /* Linux libacl specific acl_check constants */
1808 PyModule_AddIntConstant(m, "ACL_MULTI_ERROR", ACL_MULTI_ERROR);
1809 PyModule_AddIntConstant(m, "ACL_DUPLICATE_ERROR", ACL_DUPLICATE_ERROR);
1810 PyModule_AddIntConstant(m, "ACL_MISS_ERROR", ACL_MISS_ERROR);
1811 PyModule_AddIntConstant(m, "ACL_ENTRY_ERROR", ACL_ENTRY_ERROR);
1813 #define LINUX_EXT_VAL 1
1815 #define LINUX_EXT_VAL 0
1817 /* declare the Linux extensions */
1818 PyModule_AddIntConstant(m, "HAS_ACL_FROM_MODE", LINUX_EXT_VAL);
1819 PyModule_AddIntConstant(m, "HAS_ACL_CHECK", LINUX_EXT_VAL);
1820 PyModule_AddIntConstant(m, "HAS_EXTENDED_CHECK", LINUX_EXT_VAL);
1821 PyModule_AddIntConstant(m, "HAS_EQUIV_MODE", LINUX_EXT_VAL);
1823 PyModule_AddIntConstant(m, "HAS_COPY_EXT",
1824 #ifdef HAVE_ACL_COPY_EXT