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 PyErr_SetFromErrno(PyExc_IOError);
124 acl->entry_id = ACL_FIRST_ENTRY;
130 /* Initialization of a new ACL instance */
131 static int ACL_init(PyObject* obj, PyObject* args, PyObject *keywds) {
132 ACL_Object* self = (ACL_Object*) obj;
133 static char *kwlist[] = { "file", "fd", "text", "acl", "filedef",
137 #ifdef HAVE_ACL_COPY_EXT
141 char *format = "|O&OsO!O&"
145 #ifdef HAVE_ACL_COPY_EXT
151 PyObject *file = NULL;
152 PyObject *filedef = NULL;
155 ACL_Object* thesrc = NULL;
156 const void *buf = NULL;
159 if(!PyTuple_Check(args) || PyTuple_Size(args) != 0 ||
160 (keywds != NULL && PyDict_Check(keywds) && PyDict_Size(keywds) > 1)) {
161 PyErr_SetString(PyExc_ValueError, "a max of one keyword argument"
165 if(!PyArg_ParseTupleAndKeywords(args, keywds, format, kwlist,
166 PyUnicode_FSConverter, &file,
167 &fd, &text, &ACL_Type, &thesrc,
168 PyUnicode_FSConverter, &filedef
172 #ifdef HAVE_ACL_COPY_EXT
179 fprintf(stderr, "foobar!\n");
180 char *path = PyBytes_AS_STRING(file);
181 new = acl_get_file(path, ACL_TYPE_ACCESS);
183 } else if(text != NULL)
184 new = acl_from_text(text);
185 else if(fd != NULL) {
187 if ((fdval = PyObject_AsFileDescriptor(fd)) != -1) {
188 new = acl_get_fd(fdval);
190 } else if(thesrc != NULL)
191 new = acl_dup(thesrc->acl);
192 else if(filedef != NULL) {
193 char *path = PyBytes_AS_STRING(filedef);
194 new = acl_get_file(path, ACL_TYPE_DEFAULT);
199 new = acl_from_mode(mode);
201 #ifdef HAVE_ACL_COPY_EXT
202 else if(buf != NULL) {
203 new = acl_copy_int(buf);
210 PyErr_SetFromErrno(PyExc_IOError);
214 /* Free the old acl_t without checking for error, we don't
216 if(self->acl != NULL)
224 /* Standard type functions */
225 static void ACL_dealloc(PyObject* obj) {
226 ACL_Object *self = (ACL_Object*) obj;
227 PyObject *err_type, *err_value, *err_traceback;
228 int have_error = PyErr_Occurred() ? 1 : 0;
231 PyErr_Fetch(&err_type, &err_value, &err_traceback);
232 if(self->acl != NULL && acl_free(self->acl) != 0)
233 PyErr_WriteUnraisable(obj);
235 PyErr_Restore(err_type, err_value, err_traceback);
239 /* Converts the acl to a text format */
240 static PyObject* ACL_str(PyObject *obj) {
242 ACL_Object *self = (ACL_Object*) obj;
245 text = acl_to_text(self->acl, NULL);
247 return PyErr_SetFromErrno(PyExc_IOError);
249 ret = PyUnicode_FromString(text);
250 if(acl_free(text) != 0) {
252 return PyErr_SetFromErrno(PyExc_IOError);
258 static char __to_any_text_doc__[] =
259 "to_any_text([prefix='', separator='n', options=0])\n"
260 "Convert the ACL to a custom text format.\n"
262 "This method encapsulates the ``acl_to_any_text()`` function.\n"
263 "It allows a customized text format to be generated for the ACL. See\n"
264 ":manpage:`acl_to_any_text(3)` for more details.\n"
266 ":param string prefix: if given, this string will be pre-pended to\n"
268 ":param string separator: a single character (defaults to '\\n'); this will"
269 " be used to separate the entries in the ACL\n"
270 ":param options: a bitwise combination of:\n\n"
271 " - :py:data:`TEXT_ABBREVIATE`: use 'u' instead of 'user', 'g' \n"
272 " instead of 'group', etc.\n"
273 " - :py:data:`TEXT_NUMERIC_IDS`: User and group IDs are included as\n"
274 " decimal numbers instead of names\n"
275 " - :py:data:`TEXT_SOME_EFFECTIVE`: Include comments denoting the\n"
276 " effective permissions when some are masked\n"
277 " - :py:data:`TEXT_ALL_EFFECTIVE`: Include comments after all ACL\n"
278 " entries affected by an ACL_MASK entry\n"
279 " - :py:data:`TEXT_SMART_INDENT`: Used in combination with the\n"
280 " _EFFECTIVE options, this will ensure that comments are aligned\n"
281 " to the fourth tab position (assuming one tab equals eight spaces)\n"
285 /* Converts the acl to a custom text format */
286 static PyObject* ACL_to_any_text(PyObject *obj, PyObject *args,
289 ACL_Object *self = (ACL_Object*) obj;
291 const char *arg_prefix = NULL;
292 char arg_separator = '\n';
294 static char *kwlist[] = {"prefix", "separator", "options", NULL};
296 if (!PyArg_ParseTupleAndKeywords(args, kwds, "|sci", kwlist, &arg_prefix,
297 &arg_separator, &arg_options))
300 text = acl_to_any_text(self->acl, arg_prefix, arg_separator, arg_options);
302 return PyErr_SetFromErrno(PyExc_IOError);
304 ret = PyBytes_FromString(text);
305 if(acl_free(text) != 0) {
307 return PyErr_SetFromErrno(PyExc_IOError);
312 static char __check_doc__[] =
313 "Check the ACL validity.\n"
315 "This is a non-portable, Linux specific extension that allow more\n"
316 "information to be retrieved in case an ACL is not valid than via the\n"
317 ":py:func:`valid` method.\n"
319 "This method will return either False (the ACL is valid), or a tuple\n"
320 "with two elements. The first element is one of the following\n"
322 " - :py:data:`ACL_MULTI_ERROR`: The ACL contains multiple entries that\n"
323 " have a tag type that may occur at most once\n"
324 " - :py:data:`ACL_DUPLICATE_ERROR`: The ACL contains multiple \n"
325 " :py:data:`ACL_USER` or :py:data:`ACL_GROUP` entries with the\n"
327 " - :py:data:`ACL_MISS_ERROR`: A required entry is missing\n"
328 " - :py:data:`ACL_ENTRY_ERROR`: The ACL contains an invalid entry\n"
331 "The second element of the tuple is the index of the entry that is\n"
332 "invalid (in the same order as by iterating over the ACL entry)\n"
335 /* The acl_check method */
336 static PyObject* ACL_check(PyObject* obj, PyObject* args) {
337 ACL_Object *self = (ACL_Object*) obj;
341 if((result = acl_check(self->acl, &eindex)) == -1)
342 return PyErr_SetFromErrno(PyExc_IOError);
346 return Py_BuildValue("(ii)", result, eindex);
349 /* Implementation of the rich compare for ACLs */
350 static PyObject* ACL_richcompare(PyObject* o1, PyObject* o2, int op) {
351 ACL_Object *acl1, *acl2;
355 if(!PyObject_IsInstance(o2, (PyObject*)&ACL_Type)) {
360 PyErr_SetString(PyExc_TypeError, "can only compare to an ACL");
364 acl1 = (ACL_Object*)o1;
365 acl2 = (ACL_Object*)o2;
366 if((n=acl_cmp(acl1->acl, acl2->acl))==-1)
367 return PyErr_SetFromErrno(PyExc_IOError);
370 ret = n == 0 ? Py_True : Py_False;
373 ret = n == 1 ? Py_True : Py_False;
376 PyErr_SetString(PyExc_TypeError, "ACLs are not orderable");
383 static char __equiv_mode_doc__[] =
384 "Return the octal mode the ACL is equivalent to.\n"
386 "This is a non-portable, Linux specific extension that checks\n"
387 "if the ACL is a basic ACL and returns the corresponding mode.\n"
390 ":raise IOError: An IOerror exception will be raised if the ACL is\n"
391 " an extended ACL.\n"
394 /* The acl_equiv_mode method */
395 static PyObject* ACL_equiv_mode(PyObject* obj, PyObject* args) {
396 ACL_Object *self = (ACL_Object*) obj;
399 if(acl_equiv_mode(self->acl, &mode) == -1)
400 return PyErr_SetFromErrno(PyExc_IOError);
401 return PyLong_FromLong(mode);
406 static char __applyto_doc__[] =
407 "applyto(item[, flag=ACL_TYPE_ACCESS])\n"
408 "Apply the ACL to a file or filehandle.\n"
410 ":param item: either a filename or a file-like object or an integer;\n"
411 " this represents the filesystem object on which to act\n"
412 ":param flag: optional flag representing the type of ACL to set, either\n"
413 " :py:data:`ACL_TYPE_ACCESS` (default) or :py:data:`ACL_TYPE_DEFAULT`\n"
416 /* Applies the ACL to a file */
417 static PyObject* ACL_applyto(PyObject* obj, PyObject* args) {
418 ACL_Object *self = (ACL_Object*) obj;
419 PyObject *target, *tmp;
420 acl_type_t type = ACL_TYPE_ACCESS;
424 if (!PyArg_ParseTuple(args, "O|I", &target, &type))
426 if ((fd = PyObject_AsFileDescriptor(target)) != -1) {
427 if((nret = acl_set_fd(fd, self->acl)) == -1) {
428 PyErr_SetFromErrno(PyExc_IOError);
431 // PyObject_AsFileDescriptor sets an error when failing, so clear
432 // it such that further code works; some method lookups fail if an
433 // error already occured when called, which breaks at least
434 // PyOS_FSPath (called by FSConverter).
436 if(PyUnicode_FSConverter(target, &tmp)) {
437 char *filename = PyBytes_AS_STRING(tmp);
438 if ((nret = acl_set_file(filename, type, self->acl)) == -1) {
439 PyErr_SetFromErrnoWithFilename(PyExc_IOError, filename);
453 static char __valid_doc__[] =
454 "Test the ACL for validity.\n"
456 "This method tests the ACL to see if it is a valid ACL\n"
457 "in terms of the file-system. More precisely, it checks that:\n"
459 "The ACL contains exactly one entry with each of the\n"
460 ":py:data:`ACL_USER_OBJ`, :py:data:`ACL_GROUP_OBJ`, and \n"
461 ":py:data:`ACL_OTHER` tag types. Entries\n"
462 "with :py:data:`ACL_USER` and :py:data:`ACL_GROUP` tag types may\n"
463 "appear zero or more\n"
464 "times in an ACL. An ACL that contains entries of :py:data:`ACL_USER` or\n"
465 ":py:data:`ACL_GROUP` tag types must contain exactly one entry of the \n"
466 ":py:data:`ACL_MASK` tag type. If an ACL contains no entries of\n"
467 ":py:data:`ACL_USER` or :py:data:`ACL_GROUP` tag types, the\n"
468 ":py:data:`ACL_MASK` entry is optional.\n"
470 "All user ID qualifiers must be unique among all entries of\n"
471 "the :py:data:`ACL_USER` tag type, and all group IDs must be unique\n"
472 "among all entries of :py:data:`ACL_GROUP` tag type.\n"
474 "The method will return 1 for a valid ACL and 0 for an invalid one.\n"
475 "This has been chosen because the specification for\n"
476 ":manpage:`acl_valid(3)`\n"
477 "in the POSIX.1e standard documents only one possible value for errno\n"
478 "in case of an invalid ACL, so we can't differentiate between\n"
479 "classes of errors. Other suggestions are welcome.\n"
485 /* Checks the ACL for validity */
486 static PyObject* ACL_valid(PyObject* obj, PyObject* args) {
487 ACL_Object *self = (ACL_Object*) obj;
489 if(acl_valid(self->acl) == -1) {
496 #ifdef HAVE_ACL_COPY_EXT
497 static PyObject* ACL_get_state(PyObject *obj, PyObject* args) {
498 ACL_Object *self = (ACL_Object*) obj;
503 size = acl_size(self->acl);
505 return PyErr_SetFromErrno(PyExc_IOError);
507 if((ret = PyBytes_FromStringAndSize(NULL, size)) == NULL)
509 buf = PyBytes_AsString(ret);
511 if((nsize = acl_copy_ext(buf, self->acl, size)) == -1) {
513 return PyErr_SetFromErrno(PyExc_IOError);
519 static PyObject* ACL_set_state(PyObject *obj, PyObject* args) {
520 ACL_Object *self = (ACL_Object*) obj;
525 /* Parse the argument */
526 if (!PyArg_ParseTuple(args, "y#", &buf, &bufsize))
529 /* Try to import the external representation */
530 if((ptr = acl_copy_int(buf)) == NULL)
531 return PyErr_SetFromErrno(PyExc_IOError);
533 /* Free the old acl. Should we ignore errors here? */
534 if(self->acl != NULL) {
535 if(acl_free(self->acl) == -1)
536 return PyErr_SetFromErrno(PyExc_IOError);
547 /* tp_iter for the ACL type; since it can be iterated only
548 * destructively, the type is its iterator
550 static PyObject* ACL_iter(PyObject *obj) {
551 ACL_Object *self = (ACL_Object*)obj;
552 self->entry_id = ACL_FIRST_ENTRY;
557 /* the tp_iternext function for the ACL type */
558 static PyObject* ACL_iternext(PyObject *obj) {
559 ACL_Object *self = (ACL_Object*)obj;
560 acl_entry_t the_entry_t;
561 Entry_Object *the_entry_obj;
564 nerr = acl_get_entry(self->acl, self->entry_id, &the_entry_t);
565 self->entry_id = ACL_NEXT_ENTRY;
567 return PyErr_SetFromErrno(PyExc_IOError);
569 /* Docs says this is not needed */
570 /*PyErr_SetObject(PyExc_StopIteration, Py_None);*/
574 the_entry_obj = (Entry_Object*) PyType_GenericNew(&Entry_Type, NULL, NULL);
575 if(the_entry_obj == NULL)
578 the_entry_obj->entry = the_entry_t;
580 the_entry_obj->parent_acl = obj;
581 Py_INCREF(obj); /* For the reference we have in entry->parent */
583 return (PyObject*)the_entry_obj;
586 static char __ACL_delete_entry_doc__[] =
587 "delete_entry(entry)\n"
588 "Deletes an entry from the ACL.\n"
590 ".. note:: Only available with level 2.\n"
592 ":param entry: the Entry object which should be deleted; note that after\n"
593 " this function is called, that object is unusable any longer\n"
594 " and should be deleted\n"
597 /* Deletes an entry from the ACL */
598 static PyObject* ACL_delete_entry(PyObject *obj, PyObject *args) {
599 ACL_Object *self = (ACL_Object*)obj;
602 if (!PyArg_ParseTuple(args, "O!", &Entry_Type, &e))
605 if (e->parent_acl != obj) {
606 PyErr_SetString(PyExc_ValueError,
607 "Can't remove un-owned entry");
610 if(acl_delete_entry(self->acl, e->entry) == -1)
611 return PyErr_SetFromErrno(PyExc_IOError);
616 static char __ACL_calc_mask_doc__[] =
617 "Compute the file group class mask.\n"
619 "The calc_mask() method calculates and sets the permissions \n"
620 "associated with the :py:data:`ACL_MASK` Entry of the ACL.\n"
621 "The value of the new permissions is the union of the permissions \n"
622 "granted by all entries of tag type :py:data:`ACL_GROUP`, \n"
623 ":py:data:`ACL_GROUP_OBJ`, or \n"
624 ":py:data:`ACL_USER`. If the ACL already contains an :py:data:`ACL_MASK`\n"
626 "permissions are overwritten; if it does not contain an \n"
627 ":py:data:`ACL_MASK` Entry, one is added.\n"
629 "The order of existing entries in the ACL is undefined after this \n"
633 /* Updates the mask entry in the ACL */
634 static PyObject* ACL_calc_mask(PyObject *obj, PyObject *args) {
635 ACL_Object *self = (ACL_Object*)obj;
637 if(acl_calc_mask(&self->acl) == -1)
638 return PyErr_SetFromErrno(PyExc_IOError);
643 static char __ACL_append_doc__[] =
645 "Append a new Entry to the ACL and return it.\n"
647 "This is a convenience function to create a new Entry \n"
648 "and append it to the ACL.\n"
649 "If a parameter of type Entry instance is given, the \n"
650 "entry will be a copy of that one (as if copied with \n"
651 ":py:func:`Entry.copy`), otherwise, the new entry will be empty.\n"
653 ":rtype: :py:class:`Entry`\n"
654 ":returns: the newly created entry\n"
657 /* Convenience method to create a new Entry */
658 static PyObject* ACL_append(PyObject *obj, PyObject *args) {
659 Entry_Object* newentry;
660 Entry_Object* oldentry = NULL;
663 if (!PyArg_ParseTuple(args, "|O!", &Entry_Type, &oldentry)) {
667 PyObject *new_arglist = Py_BuildValue("(O)", obj);
668 if (new_arglist == NULL) {
671 newentry = (Entry_Object*) PyObject_CallObject((PyObject*)&Entry_Type, new_arglist);
672 Py_DECREF(new_arglist);
673 if(newentry == NULL) {
677 if(oldentry != NULL) {
678 nret = acl_copy_entry(newentry->entry, oldentry->entry);
681 return PyErr_SetFromErrno(PyExc_IOError);
685 return (PyObject*)newentry;
688 /***** Entry type *****/
698 /* Pre-declaring the function is more friendly to cpychecker, sigh. */
699 static int get_tag_qualifier(acl_entry_t entry, tag_qual *tq)
700 CPYCHECKER_NEGATIVE_RESULT_SETS_EXCEPTION;
702 /* Helper function to get the tag and qualifier of an Entry at the
703 same time. This is "needed" because the acl_get_qualifier function
704 returns a pointer to different types, based on the tag value, and
705 thus it's not straightforward to get the right type.
707 It sets a Python exception if an error occurs, and returns -1 in
708 this case. If successful, the tag is set to the tag type, the
709 qualifier (if any) to either the uid or the gid entry in the
710 tag_qual structure, and the return value is 0.
712 static int get_tag_qualifier(acl_entry_t entry, tag_qual *tq) {
715 if(acl_get_tag_type(entry, &tq->tag) == -1) {
716 PyErr_SetFromErrno(PyExc_IOError);
719 if (tq->tag == ACL_USER || tq->tag == ACL_GROUP) {
720 if((p = acl_get_qualifier(entry)) == NULL) {
721 PyErr_SetFromErrno(PyExc_IOError);
724 if (tq->tag == ACL_USER) {
725 tq->uid = *(uid_t*)p;
727 tq->gid = *(gid_t*)p;
734 #define ENTRY_SET_CHECK(self, attr, value) \
735 if (value == NULL) { \
736 PyErr_SetString(PyExc_TypeError, \
737 attr " deletion is not supported"); \
741 /* Creation of a new Entry instance */
742 static PyObject* Entry_new(PyTypeObject* type, PyObject* args,
746 ACL_Object* parent = NULL;
748 if (!PyArg_ParseTuple(args, "O!", &ACL_Type, &parent))
751 newentry = PyType_GenericNew(type, args, keywds);
753 if(newentry == NULL) {
757 entry = (Entry_Object*)newentry;
759 if(acl_create_entry(&parent->acl, &entry->entry) == -1) {
760 PyErr_SetFromErrno(PyExc_IOError);
765 entry->parent_acl = (PyObject*)parent;
769 /* Initialization of a new Entry instance */
770 static int Entry_init(PyObject* obj, PyObject* args, PyObject *keywds) {
771 Entry_Object* self = (Entry_Object*) obj;
772 ACL_Object* parent = NULL;
774 if (!PyArg_ParseTuple(args, "O!", &ACL_Type, &parent))
777 if ((PyObject*)parent != self->parent_acl) {
778 PyErr_SetString(PyExc_ValueError,
779 "Can't reinitialize with a different parent");
785 /* Free the Entry instance */
786 static void Entry_dealloc(PyObject* obj) {
787 Entry_Object *self = (Entry_Object*) obj;
788 PyObject *err_type, *err_value, *err_traceback;
789 int have_error = PyErr_Occurred() ? 1 : 0;
792 PyErr_Fetch(&err_type, &err_value, &err_traceback);
793 if(self->parent_acl != NULL) {
794 Py_DECREF(self->parent_acl);
795 self->parent_acl = NULL;
798 PyErr_Restore(err_type, err_value, err_traceback);
802 /* Converts the entry to a text format */
803 static PyObject* Entry_str(PyObject *obj) {
804 PyObject *format, *kind;
805 Entry_Object *self = (Entry_Object*) obj;
808 if(get_tag_qualifier(self->entry, &tq) < 0) {
812 format = PyUnicode_FromString("ACL entry for ");
816 case ACL_UNDEFINED_TAG:
817 kind = PyUnicode_FromString("undefined type");
820 kind = PyUnicode_FromString("the owner");
823 kind = PyUnicode_FromString("the group");
826 kind = PyUnicode_FromString("the others");
829 /* FIXME: here and in the group case, we're formatting with
830 unsigned, because there's no way to automatically determine
831 the signed-ness of the types; on Linux(glibc) they're
832 unsigned, so we'll go along with that */
833 kind = PyUnicode_FromFormat("user with uid %u", tq.uid);
836 kind = PyUnicode_FromFormat("group with gid %u", tq.gid);
839 kind = PyUnicode_FromString("the mask");
842 kind = PyUnicode_FromString("UNKNOWN_TAG_TYPE!");
849 PyObject *ret = PyUnicode_Concat(format, kind);
855 /* Sets the tag type of the entry */
856 static int Entry_set_tag_type(PyObject* obj, PyObject* value, void* arg) {
857 Entry_Object *self = (Entry_Object*) obj;
859 ENTRY_SET_CHECK(self, "tag type", value);
861 if(!PyLong_Check(value)) {
862 PyErr_SetString(PyExc_TypeError,
863 "tag type must be integer");
866 if(acl_set_tag_type(self->entry, (acl_tag_t)PyLong_AsLong(value)) == -1) {
867 PyErr_SetFromErrno(PyExc_IOError);
874 /* Returns the tag type of the entry */
875 static PyObject* Entry_get_tag_type(PyObject *obj, void* arg) {
876 Entry_Object *self = (Entry_Object*) obj;
879 if(acl_get_tag_type(self->entry, &value) == -1) {
880 PyErr_SetFromErrno(PyExc_IOError);
884 return PyLong_FromLong(value);
887 /* Sets the qualifier (either uid_t or gid_t) for the entry,
888 * usable only if the tag type if ACL_USER or ACL_GROUP
890 static int Entry_set_qualifier(PyObject* obj, PyObject* value, void* arg) {
891 Entry_Object *self = (Entry_Object*) obj;
892 unsigned long uidgid;
898 ENTRY_SET_CHECK(self, "qualifier", value);
900 if(!PyLong_Check(value)) {
901 PyErr_SetString(PyExc_TypeError,
902 "qualifier must be integer");
905 /* This is the negative value check, and larger than long
906 check. If uid_t/gid_t are long-sized, this is enough to check
907 for both over and underflow. */
908 if((uidgid = PyLong_AsUnsignedLong(value)) == (unsigned long) -1) {
909 if(PyErr_Occurred() != NULL) {
913 /* Due to how acl_set_qualifier takes its argument, we have to do
914 this ugly dance with two variables and a pointer that will
915 point to one of them. */
916 if(acl_get_tag_type(self->entry, &tag) == -1) {
917 PyErr_SetFromErrno(PyExc_IOError);
922 /* This is an extra overflow check, in case uid_t/gid_t are
923 int-sized (and int size smaller than long size). */
926 if((unsigned long)uid != uidgid) {
927 PyErr_SetString(PyExc_OverflowError, "Can't assign given qualifier");
934 if((unsigned long)gid != uidgid) {
935 PyErr_SetString(PyExc_OverflowError, "Can't assign given qualifier");
942 PyErr_SetString(PyExc_TypeError,
943 "Can only set qualifiers on ACL_USER or ACL_GROUP entries");
946 if(acl_set_qualifier(self->entry, p) == -1) {
947 PyErr_SetFromErrno(PyExc_IOError);
954 /* Returns the qualifier of the entry */
955 static PyObject* Entry_get_qualifier(PyObject *obj, void* arg) {
956 Entry_Object *self = (Entry_Object*) obj;
960 if (self->entry == NULL) {
961 PyErr_SetString(PyExc_ValueError, "Can't get qualifier on uninitalized Entry object");
964 if(get_tag_qualifier(self->entry, &tq) < 0) {
967 if (tq.tag == ACL_USER) {
969 } else if (tq.tag == ACL_GROUP) {
972 PyErr_SetString(PyExc_TypeError,
973 "Given entry doesn't have an user or"
977 return PyLong_FromUnsignedLong(value);
980 /* Returns the parent ACL of the entry */
981 static PyObject* Entry_get_parent(PyObject *obj, void* arg) {
982 Entry_Object *self = (Entry_Object*) obj;
984 Py_INCREF(self->parent_acl);
985 return self->parent_acl;
988 /* Returns the a new Permset representing the permset of the entry
989 * FIXME: Should return a new reference to the same object, which
990 * should be created at init time!
992 static PyObject* Entry_get_permset(PyObject *obj, void* arg) {
995 PyObject *perm_arglist = Py_BuildValue("(O)", obj);
996 if (perm_arglist == NULL) {
999 p = PyObject_CallObject((PyObject*)&Permset_Type, perm_arglist);
1000 Py_DECREF(perm_arglist);
1004 /* Sets the permset of the entry to the passed Permset */
1005 static int Entry_set_permset(PyObject* obj, PyObject* value, void* arg) {
1006 Entry_Object *self = (Entry_Object*)obj;
1009 ENTRY_SET_CHECK(self, "permset", value);
1011 if(!PyObject_IsInstance(value, (PyObject*)&Permset_Type)) {
1012 PyErr_SetString(PyExc_TypeError, "argument 1 must be posix1e.Permset");
1015 p = (Permset_Object*)value;
1016 if(acl_set_permset(self->entry, p->permset) == -1) {
1017 PyErr_SetFromErrno(PyExc_IOError);
1023 static char __Entry_copy_doc__[] =
1025 "Copies an ACL entry.\n"
1027 "This method sets all the parameters to those of another\n"
1028 "entry (either of the same ACL or belonging to another ACL).\n"
1030 ":param Entry src: instance of type Entry\n"
1033 /* Sets all the entry parameters to another entry */
1034 static PyObject* Entry_copy(PyObject *obj, PyObject *args) {
1035 Entry_Object *self = (Entry_Object*)obj;
1036 Entry_Object *other;
1038 if(!PyArg_ParseTuple(args, "O!", &Entry_Type, &other))
1041 if(acl_copy_entry(self->entry, other->entry) == -1)
1042 return PyErr_SetFromErrno(PyExc_IOError);
1047 /**** Permset type *****/
1049 /* Creation of a new Permset instance */
1050 static PyObject* Permset_new(PyTypeObject* type, PyObject* args,
1052 PyObject* newpermset;
1053 Permset_Object* permset;
1054 Entry_Object* parent = NULL;
1056 if (!PyArg_ParseTuple(args, "O!", &Entry_Type, &parent)) {
1060 newpermset = PyType_GenericNew(type, args, keywds);
1062 if(newpermset == NULL) {
1066 permset = (Permset_Object*)newpermset;
1068 if(acl_get_permset(parent->entry, &permset->permset) == -1) {
1069 PyErr_SetFromErrno(PyExc_IOError);
1070 Py_DECREF(newpermset);
1074 permset->parent_entry = (PyObject*)parent;
1080 /* Initialization of a new Permset instance */
1081 static int Permset_init(PyObject* obj, PyObject* args, PyObject *keywds) {
1082 Permset_Object* self = (Permset_Object*) obj;
1083 Entry_Object* parent = NULL;
1085 if (!PyArg_ParseTuple(args, "O!", &Entry_Type, &parent))
1088 if ((PyObject*)parent != self->parent_entry) {
1089 PyErr_SetString(PyExc_ValueError,
1090 "Can't reinitialize with a different parent");
1097 /* Free the Permset instance */
1098 static void Permset_dealloc(PyObject* obj) {
1099 Permset_Object *self = (Permset_Object*) obj;
1100 PyObject *err_type, *err_value, *err_traceback;
1101 int have_error = PyErr_Occurred() ? 1 : 0;
1104 PyErr_Fetch(&err_type, &err_value, &err_traceback);
1105 if(self->parent_entry != NULL) {
1106 Py_DECREF(self->parent_entry);
1107 self->parent_entry = NULL;
1110 PyErr_Restore(err_type, err_value, err_traceback);
1114 /* Permset string representation */
1115 static PyObject* Permset_str(PyObject *obj) {
1116 Permset_Object *self = (Permset_Object*) obj;
1119 pstr[0] = get_perm(self->permset, ACL_READ) ? 'r' : '-';
1120 pstr[1] = get_perm(self->permset, ACL_WRITE) ? 'w' : '-';
1121 pstr[2] = get_perm(self->permset, ACL_EXECUTE) ? 'x' : '-';
1122 return PyUnicode_FromStringAndSize(pstr, 3);
1125 static char __Permset_clear_doc__[] =
1126 "Clears all permissions from the permission set.\n"
1129 /* Clears all permissions from the permset */
1130 static PyObject* Permset_clear(PyObject* obj, PyObject* args) {
1131 Permset_Object *self = (Permset_Object*) obj;
1133 if(acl_clear_perms(self->permset) == -1)
1134 return PyErr_SetFromErrno(PyExc_IOError);
1139 static PyObject* Permset_get_right(PyObject *obj, void* arg) {
1140 Permset_Object *self = (Permset_Object*) obj;
1142 if(get_perm(self->permset, *(acl_perm_t*)arg)) {
1149 static int Permset_set_right(PyObject* obj, PyObject* value, void* arg) {
1150 Permset_Object *self = (Permset_Object*) obj;
1154 if(!PyLong_Check(value)) {
1155 PyErr_SetString(PyExc_ValueError, "invalid argument, an integer"
1159 on = PyLong_AsLong(value);
1161 nerr = acl_add_perm(self->permset, *(acl_perm_t*)arg);
1163 nerr = acl_delete_perm(self->permset, *(acl_perm_t*)arg);
1165 PyErr_SetFromErrno(PyExc_IOError);
1171 static char __Permset_add_doc__[] =
1173 "Add a permission to the permission set.\n"
1175 "This function adds the permission contained in \n"
1176 "the argument perm to the permission set. An attempt \n"
1177 "to add a permission that is already contained in the \n"
1178 "permission set is not considered an error.\n"
1180 ":param perm: a permission (:py:data:`ACL_WRITE`, :py:data:`ACL_READ`,\n"
1181 " :py:data:`ACL_EXECUTE`, ...)\n"
1182 ":raises IOError: in case the argument is not a valid descriptor\n"
1185 static PyObject* Permset_add(PyObject* obj, PyObject* args) {
1186 Permset_Object *self = (Permset_Object*) obj;
1189 if (!PyArg_ParseTuple(args, "i", &right))
1192 if(acl_add_perm(self->permset, (acl_perm_t) right) == -1)
1193 return PyErr_SetFromErrno(PyExc_IOError);
1198 static char __Permset_delete_doc__[] =
1200 "Delete a permission from the permission set.\n"
1202 "This function deletes the permission contained in \n"
1203 "the argument perm from the permission set. An attempt \n"
1204 "to delete a permission that is not contained in the \n"
1205 "permission set is not considered an error.\n"
1207 ":param perm: a permission (:py:data:`ACL_WRITE`, :py:data:`ACL_READ`,\n"
1208 " :py:data:`ACL_EXECUTE`, ...)\n"
1209 ":raises IOError: in case the argument is not a valid descriptor\n"
1212 static PyObject* Permset_delete(PyObject* obj, PyObject* args) {
1213 Permset_Object *self = (Permset_Object*) obj;
1216 if (!PyArg_ParseTuple(args, "i", &right))
1219 if(acl_delete_perm(self->permset, (acl_perm_t) right) == -1)
1220 return PyErr_SetFromErrno(PyExc_IOError);
1225 static char __Permset_test_doc__[] =
1227 "Test if a permission exists in the permission set.\n"
1229 "The test() function tests if the permission represented by\n"
1230 "the argument perm exists in the permission set.\n"
1232 ":param perm: a permission (:py:data:`ACL_WRITE`, :py:data:`ACL_READ`,\n"
1233 " :py:data:`ACL_EXECUTE`, ...)\n"
1235 ":raises IOError: in case the argument is not a valid descriptor\n"
1238 static PyObject* Permset_test(PyObject* obj, PyObject* args) {
1239 Permset_Object *self = (Permset_Object*) obj;
1243 if (!PyArg_ParseTuple(args, "i", &right))
1246 ret = get_perm(self->permset, (acl_perm_t) right);
1248 return PyErr_SetFromErrno(PyExc_IOError);
1259 static char __ACL_Type_doc__[] =
1260 "Type which represents a POSIX ACL\n"
1262 ".. note:: only one keyword parameter should be provided\n"
1264 ":param string/bytes/path-like file: creates an ACL representing\n"
1265 " the access ACL of the specified file or directory.\n"
1266 ":param string/bytes/path-like filedef: creates an ACL representing\n"
1267 " the default ACL of the given directory.\n"
1268 ":param int/iostream fd: creates an ACL representing\n"
1269 " the access ACL of the given file descriptor.\n"
1270 ":param string text: creates an ACL from a \n"
1271 " textual description; note the ACL must be valid, which\n"
1272 " means including a mask for extended ACLs, similar to\n"
1273 " ``setfacl --no-mask``\n"
1274 ":param ACL acl: creates a copy of an existing ACL instance.\n"
1275 ":param int mode: creates an ACL from a numeric mode\n"
1276 " (e.g. ``mode=0644``); this is valid only when the C library\n"
1277 " provides the ``acl_from_mode call``, and\n"
1278 " note that no validation is done on the given value.\n"
1279 ":param bytes data: creates an ACL from a serialised form,\n"
1280 " as provided by calling ``__getstate__()`` on an existing ACL\n"
1282 "If no parameters are passed, an empty ACL will be created; this\n"
1283 "makes sense only when your OS supports ACL modification\n"
1284 "(i.e. it implements full POSIX.1e support), otherwise the ACL won't\n"
1288 /* ACL type methods */
1289 static PyMethodDef ACL_methods[] = {
1290 {"applyto", ACL_applyto, METH_VARARGS, __applyto_doc__},
1291 {"valid", ACL_valid, METH_NOARGS, __valid_doc__},
1293 {"to_any_text", (PyCFunction)ACL_to_any_text, METH_VARARGS | METH_KEYWORDS,
1294 __to_any_text_doc__},
1295 {"check", ACL_check, METH_NOARGS, __check_doc__},
1296 {"equiv_mode", ACL_equiv_mode, METH_NOARGS, __equiv_mode_doc__},
1298 #ifdef HAVE_ACL_COPY_EXT
1299 {"__getstate__", ACL_get_state, METH_NOARGS,
1300 "Dumps the ACL to an external format."},
1301 {"__setstate__", ACL_set_state, METH_VARARGS,
1302 "Loads the ACL from an external format."},
1305 {"delete_entry", ACL_delete_entry, METH_VARARGS, __ACL_delete_entry_doc__},
1306 {"calc_mask", ACL_calc_mask, METH_NOARGS, __ACL_calc_mask_doc__},
1307 {"append", ACL_append, METH_VARARGS, __ACL_append_doc__},
1309 {NULL, NULL, 0, NULL}
1313 /* The definition of the ACL Type */
1314 static PyTypeObject ACL_Type = {
1315 PyVarObject_HEAD_INIT(NULL, 0)
1319 ACL_dealloc, /* tp_dealloc */
1323 0, /* formerly tp_compare, in 3.0 deprecated, in
1326 0, /* tp_as_number */
1327 0, /* tp_as_sequence */
1328 0, /* tp_as_mapping */
1331 ACL_str, /* tp_str */
1332 0, /* tp_getattro */
1333 0, /* tp_setattro */
1334 0, /* tp_as_buffer */
1335 Py_TPFLAGS_DEFAULT, /* tp_flags */
1336 __ACL_Type_doc__, /* tp_doc */
1337 0, /* tp_traverse */
1340 ACL_richcompare, /* tp_richcompare */
1342 0, /* tp_richcompare */
1344 0, /* tp_weaklistoffset */
1350 0, /* tp_iternext */
1352 ACL_methods, /* tp_methods */
1357 0, /* tp_descr_get */
1358 0, /* tp_descr_set */
1359 0, /* tp_dictoffset */
1360 ACL_init, /* tp_init */
1362 ACL_new, /* tp_new */
1367 /* Entry type methods */
1368 static PyMethodDef Entry_methods[] = {
1369 {"copy", Entry_copy, METH_VARARGS, __Entry_copy_doc__},
1370 {NULL, NULL, 0, NULL}
1373 static char __Entry_tagtype_doc__[] =
1374 "The tag type of the current entry\n"
1377 " - :py:data:`ACL_UNDEFINED_TAG`\n"
1378 " - :py:data:`ACL_USER_OBJ`\n"
1379 " - :py:data:`ACL_USER`\n"
1380 " - :py:data:`ACL_GROUP_OBJ`\n"
1381 " - :py:data:`ACL_GROUP`\n"
1382 " - :py:data:`ACL_MASK`\n"
1383 " - :py:data:`ACL_OTHER`\n"
1386 static char __Entry_qualifier_doc__[] =
1387 "The qualifier of the current entry\n"
1389 "If the tag type is :py:data:`ACL_USER`, this should be a user id.\n"
1390 "If the tag type if :py:data:`ACL_GROUP`, this should be a group id.\n"
1391 "Else it doesn't matter.\n"
1394 static char __Entry_parent_doc__[] =
1395 "The parent ACL of this entry\n"
1398 static char __Entry_permset_doc__[] =
1399 "The permission set of this ACL entry\n"
1403 static PyGetSetDef Entry_getsets[] = {
1404 {"tag_type", Entry_get_tag_type, Entry_set_tag_type,
1405 __Entry_tagtype_doc__},
1406 {"qualifier", Entry_get_qualifier, Entry_set_qualifier,
1407 __Entry_qualifier_doc__},
1408 {"parent", Entry_get_parent, NULL, __Entry_parent_doc__},
1409 {"permset", Entry_get_permset, Entry_set_permset, __Entry_permset_doc__},
1413 static char __Entry_Type_doc__[] =
1414 "Type which represents an entry in an ACL.\n"
1416 "The type exists only if the OS has full support for POSIX.1e\n"
1417 "Can be created either by:\n"
1419 " >>> e = posix1e.Entry(myACL) # this creates a new entry in the ACL\n"
1420 " >>> e = myACL.append() # another way for doing the same thing\n"
1424 " >>> for entry in myACL:\n"
1425 " ... print entry\n"
1427 "Note that the Entry keeps a reference to its ACL, so even if \n"
1428 "you delete the ACL, it won't be cleaned up and will continue to \n"
1429 "exist until its Entry(ies) will be deleted.\n"
1431 /* The definition of the Entry Type */
1432 static PyTypeObject Entry_Type = {
1433 PyVarObject_HEAD_INIT(NULL, 0)
1435 sizeof(Entry_Object),
1437 Entry_dealloc, /* tp_dealloc */
1443 0, /* tp_as_number */
1444 0, /* tp_as_sequence */
1445 0, /* tp_as_mapping */
1448 Entry_str, /* tp_str */
1449 0, /* tp_getattro */
1450 0, /* tp_setattro */
1451 0, /* tp_as_buffer */
1452 Py_TPFLAGS_DEFAULT, /* tp_flags */
1453 __Entry_Type_doc__, /* tp_doc */
1454 0, /* tp_traverse */
1456 0, /* tp_richcompare */
1457 0, /* tp_weaklistoffset */
1459 0, /* tp_iternext */
1460 Entry_methods, /* tp_methods */
1462 Entry_getsets, /* tp_getset */
1465 0, /* tp_descr_get */
1466 0, /* tp_descr_set */
1467 0, /* tp_dictoffset */
1468 Entry_init, /* tp_init */
1470 Entry_new, /* tp_new */
1473 /* Permset type methods */
1474 static PyMethodDef Permset_methods[] = {
1475 {"clear", Permset_clear, METH_NOARGS, __Permset_clear_doc__, },
1476 {"add", Permset_add, METH_VARARGS, __Permset_add_doc__, },
1477 {"delete", Permset_delete, METH_VARARGS, __Permset_delete_doc__, },
1478 {"test", Permset_test, METH_VARARGS, __Permset_test_doc__, },
1479 {NULL, NULL, 0, NULL}
1482 static char __Permset_execute_doc__[] =
1483 "Execute permission property\n"
1485 "This is a convenience method of retrieving and setting the execute\n"
1486 "permission in the permission set; the \n"
1487 "same effect can be achieved using the functions\n"
1488 "add(), test(), delete(), and those can take any \n"
1489 "permission defined by your platform.\n"
1492 static char __Permset_read_doc__[] =
1493 "Read permission property\n"
1495 "This is a convenience method of retrieving and setting the read\n"
1496 "permission in the permission set; the \n"
1497 "same effect can be achieved using the functions\n"
1498 "add(), test(), delete(), and those can take any \n"
1499 "permission defined by your platform.\n"
1502 static char __Permset_write_doc__[] =
1503 "Write permission property\n"
1505 "This is a convenience method of retrieving and setting the write\n"
1506 "permission in the permission set; the \n"
1507 "same effect can be achieved using the functions\n"
1508 "add(), test(), delete(), and those can take any \n"
1509 "permission defined by your platform.\n"
1512 /* Permset getset */
1513 static PyGetSetDef Permset_getsets[] = {
1514 {"execute", Permset_get_right, Permset_set_right,
1515 __Permset_execute_doc__, &holder_ACL_EXECUTE},
1516 {"read", Permset_get_right, Permset_set_right,
1517 __Permset_read_doc__, &holder_ACL_READ},
1518 {"write", Permset_get_right, Permset_set_right,
1519 __Permset_write_doc__, &holder_ACL_WRITE},
1523 static char __Permset_Type_doc__[] =
1524 "Type which represents the permission set in an ACL entry\n"
1526 "The type exists only if the OS has full support for POSIX.1e\n"
1527 "Can be retrieved either by:\n\n"
1528 ">>> perms = myEntry.permset\n"
1531 ">>> perms = posix1e.Permset(myEntry)\n"
1533 "Note that the Permset keeps a reference to its Entry, so even if \n"
1534 "you delete the entry, it won't be cleaned up and will continue to \n"
1535 "exist until its Permset will be deleted.\n"
1538 /* The definition of the Permset Type */
1539 static PyTypeObject Permset_Type = {
1540 PyVarObject_HEAD_INIT(NULL, 0)
1542 sizeof(Permset_Object),
1544 Permset_dealloc, /* tp_dealloc */
1550 0, /* tp_as_number */
1551 0, /* tp_as_sequence */
1552 0, /* tp_as_mapping */
1555 Permset_str, /* tp_str */
1556 0, /* tp_getattro */
1557 0, /* tp_setattro */
1558 0, /* tp_as_buffer */
1559 Py_TPFLAGS_DEFAULT, /* tp_flags */
1560 __Permset_Type_doc__,/* tp_doc */
1561 0, /* tp_traverse */
1563 0, /* tp_richcompare */
1564 0, /* tp_weaklistoffset */
1566 0, /* tp_iternext */
1567 Permset_methods, /* tp_methods */
1569 Permset_getsets, /* tp_getset */
1572 0, /* tp_descr_get */
1573 0, /* tp_descr_set */
1574 0, /* tp_dictoffset */
1575 Permset_init, /* tp_init */
1577 Permset_new, /* tp_new */
1582 /* Module methods */
1584 static char __deletedef_doc__[] =
1585 "delete_default(path)\n"
1586 "Delete the default ACL from a directory.\n"
1588 "This function deletes the default ACL associated with\n"
1589 "a directory (the ACL which will be ANDed with the mode\n"
1590 "parameter to the open, creat functions).\n"
1592 ":param string path: the directory whose default ACL should be deleted\n"
1595 /* Deletes the default ACL from a directory */
1596 static PyObject* aclmodule_delete_default(PyObject* obj, PyObject* args) {
1599 /* Parse the arguments */
1600 if (!PyArg_ParseTuple(args, "et", NULL, &filename))
1603 if(acl_delete_def_file(filename) == -1) {
1604 return PyErr_SetFromErrnoWithFilename(PyExc_IOError, filename);
1611 static char __has_extended_doc__[] =
1612 "has_extended(item)\n"
1613 "Check if a file or file handle has an extended ACL.\n"
1615 ":param item: either a file name or a file-like object or an integer;\n"
1616 " it represents the file-system object on which to act\n"
1619 /* Check for extended ACL a file or fd */
1620 static PyObject* aclmodule_has_extended(PyObject* obj, PyObject* args) {
1621 PyObject *item, *tmp;
1625 if (!PyArg_ParseTuple(args, "O", &item))
1628 if((fd = PyObject_AsFileDescriptor(item)) != -1) {
1629 if((nret = acl_extended_fd(fd)) == -1) {
1630 PyErr_SetFromErrno(PyExc_IOError);
1633 // PyObject_AsFileDescriptor sets an error when failing, so clear
1634 // it such that further code works; some method lookups fail if an
1635 // error already occured when called, which breaks at least
1636 // PyOS_FSPath (called by FSConverter).
1638 if(PyUnicode_FSConverter(item, &tmp)) {
1639 char *filename = PyBytes_AS_STRING(tmp);
1640 if ((nret = acl_extended_file(filename)) == -1) {
1641 PyErr_SetFromErrnoWithFilename(PyExc_IOError, filename);
1652 return PyBool_FromLong(nret);
1657 /* The module methods */
1658 static PyMethodDef aclmodule_methods[] = {
1659 {"delete_default", aclmodule_delete_default, METH_VARARGS,
1662 {"has_extended", aclmodule_has_extended, METH_VARARGS,
1663 __has_extended_doc__},
1665 {NULL, NULL, 0, NULL}
1668 static char __posix1e_doc__[] =
1669 "POSIX.1e ACLs manipulation\n"
1670 "==========================\n"
1672 "This module provides support for manipulating POSIX.1e ACLS\n"
1674 "Depending on the operating system support for POSIX.1e, \n"
1675 "the ACL type will have more or less capabilities:\n\n"
1676 " - level 1, only basic support, you can create\n"
1677 " ACLs from files and text descriptions;\n"
1678 " once created, the type is immutable\n"
1679 " - level 2, complete support, you can alter\n"
1680 " the ACL once it is created\n"
1682 "Also, in level 2, more types are available, corresponding\n"
1683 "to acl_entry_t (the Entry type), acl_permset_t (the Permset type).\n"
1685 "The existence of level 2 support and other extensions can be\n"
1686 "checked by the constants:\n\n"
1687 " - :py:data:`HAS_ACL_ENTRY` for level 2 and the Entry/Permset classes\n"
1688 " - :py:data:`HAS_ACL_FROM_MODE` for ``ACL(mode=...)`` usage\n"
1689 " - :py:data:`HAS_ACL_CHECK` for the :py:func:`ACL.check` function\n"
1690 " - :py:data:`HAS_EXTENDED_CHECK` for the module-level\n"
1691 " :py:func:`has_extended` function\n"
1692 " - :py:data:`HAS_EQUIV_MODE` for the :py:func:`ACL.equiv_mode` method\n"
1693 " - :py:data:`HAS_COPY_EXT` for the :py:func:`ACL.__getstate__` and\n"
1694 " :py:func:`ACL.__setstate__` functions (pickle protocol)\n"
1698 ">>> import posix1e\n"
1699 ">>> acl1 = posix1e.ACL(file=\"file.txt\") \n"
1705 ">>> b = posix1e.ACL(text=\"u::rx,g::-,o::-\")\n"
1711 ">>> b.applyto(\"file.txt\")\n"
1712 ">>> print posix1e.ACL(file=\"file.txt\")\n"
1718 ".. py:data:: ACL_USER\n\n"
1719 " Denotes a specific user entry in an ACL.\n"
1721 ".. py:data:: ACL_USER_OBJ\n\n"
1722 " Denotes the user owner entry in an ACL.\n"
1724 ".. py:data:: ACL_GROUP\n\n"
1725 " Denotes the a group entry in an ACL.\n"
1727 ".. py:data:: ACL_GROUP_OBJ\n\n"
1728 " Denotes the group owner entry in an ACL.\n"
1730 ".. py:data:: ACL_OTHER\n\n"
1731 " Denotes the 'others' entry in an ACL.\n"
1733 ".. py:data:: ACL_MASK\n\n"
1734 " Denotes the mask entry in an ACL, representing the maximum\n"
1735 " access granted other users, the owner group and other groups.\n"
1737 ".. py:data:: ACL_UNDEFINED_TAG\n\n"
1738 " An undefined tag in an ACL.\n"
1740 ".. py:data:: ACL_READ\n\n"
1741 " Read permission in a permission set.\n"
1743 ".. py:data:: ACL_WRITE\n\n"
1744 " Write permission in a permission set.\n"
1746 ".. py:data:: ACL_EXECUTE\n\n"
1747 " Execute permission in a permission set.\n"
1749 ".. py:data:: HAS_ACL_ENTRY\n\n"
1750 " denotes support for level 2 and the Entry/Permset classes\n"
1752 ".. py:data:: HAS_ACL_FROM_MODE\n\n"
1753 " denotes support for building an ACL from an octal mode\n"
1755 ".. py:data:: HAS_ACL_CHECK\n\n"
1756 " denotes support for extended checks of an ACL's validity\n"
1758 ".. py:data:: HAS_EXTENDED_CHECK\n\n"
1759 " denotes support for checking whether an ACL is basic or extended\n"
1761 ".. py:data:: HAS_EQUIV_MODE\n\n"
1762 " denotes support for the equiv_mode function\n"
1764 ".. py:data:: HAS_COPY_EXT\n\n"
1765 " denotes support for __getstate__()/__setstate__() on an ACL\n"
1769 static struct PyModuleDef posix1emodule = {
1770 PyModuleDef_HEAD_INIT,
1778 PyInit_posix1e(void)
1782 Py_TYPE(&ACL_Type) = &PyType_Type;
1783 if(PyType_Ready(&ACL_Type) < 0)
1787 Py_TYPE(&Entry_Type) = &PyType_Type;
1788 if(PyType_Ready(&Entry_Type) < 0)
1791 Py_TYPE(&Permset_Type) = &PyType_Type;
1792 if(PyType_Ready(&Permset_Type) < 0)
1796 m = PyModule_Create(&posix1emodule);
1800 d = PyModule_GetDict(m);
1804 Py_INCREF(&ACL_Type);
1805 if (PyDict_SetItemString(d, "ACL",
1806 (PyObject *) &ACL_Type) < 0)
1809 /* 23.3.6 acl_type_t values */
1810 PyModule_AddIntConstant(m, "ACL_TYPE_ACCESS", ACL_TYPE_ACCESS);
1811 PyModule_AddIntConstant(m, "ACL_TYPE_DEFAULT", ACL_TYPE_DEFAULT);
1815 Py_INCREF(&Entry_Type);
1816 if (PyDict_SetItemString(d, "Entry",
1817 (PyObject *) &Entry_Type) < 0)
1820 Py_INCREF(&Permset_Type);
1821 if (PyDict_SetItemString(d, "Permset",
1822 (PyObject *) &Permset_Type) < 0)
1825 /* 23.2.2 acl_perm_t values */
1826 PyModule_AddIntConstant(m, "ACL_READ", ACL_READ);
1827 PyModule_AddIntConstant(m, "ACL_WRITE", ACL_WRITE);
1828 PyModule_AddIntConstant(m, "ACL_EXECUTE", ACL_EXECUTE);
1830 /* 23.2.5 acl_tag_t values */
1831 PyModule_AddIntConstant(m, "ACL_UNDEFINED_TAG", ACL_UNDEFINED_TAG);
1832 PyModule_AddIntConstant(m, "ACL_USER_OBJ", ACL_USER_OBJ);
1833 PyModule_AddIntConstant(m, "ACL_USER", ACL_USER);
1834 PyModule_AddIntConstant(m, "ACL_GROUP_OBJ", ACL_GROUP_OBJ);
1835 PyModule_AddIntConstant(m, "ACL_GROUP", ACL_GROUP);
1836 PyModule_AddIntConstant(m, "ACL_MASK", ACL_MASK);
1837 PyModule_AddIntConstant(m, "ACL_OTHER", ACL_OTHER);
1839 /* Document extended functionality via easy-to-use constants */
1840 PyModule_AddIntConstant(m, "HAS_ACL_ENTRY", 1);
1842 PyModule_AddIntConstant(m, "HAS_ACL_ENTRY", 0);
1846 /* Linux libacl specific acl_to_any_text constants */
1847 PyModule_AddIntConstant(m, "TEXT_ABBREVIATE", TEXT_ABBREVIATE);
1848 PyModule_AddIntConstant(m, "TEXT_NUMERIC_IDS", TEXT_NUMERIC_IDS);
1849 PyModule_AddIntConstant(m, "TEXT_SOME_EFFECTIVE", TEXT_SOME_EFFECTIVE);
1850 PyModule_AddIntConstant(m, "TEXT_ALL_EFFECTIVE", TEXT_ALL_EFFECTIVE);
1851 PyModule_AddIntConstant(m, "TEXT_SMART_INDENT", TEXT_SMART_INDENT);
1853 /* Linux libacl specific acl_check constants */
1854 PyModule_AddIntConstant(m, "ACL_MULTI_ERROR", ACL_MULTI_ERROR);
1855 PyModule_AddIntConstant(m, "ACL_DUPLICATE_ERROR", ACL_DUPLICATE_ERROR);
1856 PyModule_AddIntConstant(m, "ACL_MISS_ERROR", ACL_MISS_ERROR);
1857 PyModule_AddIntConstant(m, "ACL_ENTRY_ERROR", ACL_ENTRY_ERROR);
1859 #define LINUX_EXT_VAL 1
1861 #define LINUX_EXT_VAL 0
1863 /* declare the Linux extensions */
1864 PyModule_AddIntConstant(m, "HAS_ACL_FROM_MODE", LINUX_EXT_VAL);
1865 PyModule_AddIntConstant(m, "HAS_ACL_CHECK", LINUX_EXT_VAL);
1866 PyModule_AddIntConstant(m, "HAS_EXTENDED_CHECK", LINUX_EXT_VAL);
1867 PyModule_AddIntConstant(m, "HAS_EQUIV_MODE", LINUX_EXT_VAL);
1869 PyModule_AddIntConstant(m, "HAS_COPY_EXT",
1870 #ifdef HAVE_ACL_COPY_EXT