Show More
@@ -1,601 +1,601 b'' | |||||
1 | /* |
|
1 | /* | |
2 | * _inotify.c - Python extension interfacing to the Linux inotify subsystem |
|
2 | * _inotify.c - Python extension interfacing to the Linux inotify subsystem | |
3 | * |
|
3 | * | |
4 | * Copyright 2006 Bryan O'Sullivan <bos@serpentine.com> |
|
4 | * Copyright 2006 Bryan O'Sullivan <bos@serpentine.com> | |
5 | * |
|
5 | * | |
6 | * This library is free software; you can redistribute it and/or |
|
6 | * This library is free software; you can redistribute it and/or | |
7 | * modify it under the terms of version 2.1 of the GNU Lesser General |
|
7 | * modify it under the terms of version 2.1 of the GNU Lesser General | |
8 | * Public License or any later version. |
|
8 | * Public License or any later version. | |
9 | */ |
|
9 | */ | |
10 |
|
10 | |||
11 | #include <Python.h> |
|
11 | #include <Python.h> | |
12 | #include <alloca.h> |
|
12 | #include <alloca.h> | |
13 | #include <sys/inotify.h> |
|
13 | #include <sys/inotify.h> | |
14 | #include <stdint.h> |
|
14 | #include <stdint.h> | |
15 | #include <sys/ioctl.h> |
|
15 | #include <sys/ioctl.h> | |
16 | #include <unistd.h> |
|
16 | #include <unistd.h> | |
17 |
|
17 | |||
18 | static PyObject *init(PyObject *self, PyObject *args) |
|
18 | static PyObject *init(PyObject *self, PyObject *args) | |
19 | { |
|
19 | { | |
20 | PyObject *ret = NULL; |
|
20 | PyObject *ret = NULL; | |
21 | int fd = -1; |
|
21 | int fd = -1; | |
22 |
|
22 | |||
23 | if (!PyArg_ParseTuple(args, ":init")) |
|
23 | if (!PyArg_ParseTuple(args, ":init")) | |
24 | goto bail; |
|
24 | goto bail; | |
25 |
|
25 | |||
26 | Py_BEGIN_ALLOW_THREADS; |
|
26 | Py_BEGIN_ALLOW_THREADS; | |
27 | fd = inotify_init(); |
|
27 | fd = inotify_init(); | |
28 | Py_END_ALLOW_THREADS; |
|
28 | Py_END_ALLOW_THREADS; | |
29 |
|
29 | |||
30 | if (fd == -1) { |
|
30 | if (fd == -1) { | |
31 | PyErr_SetFromErrno(PyExc_OSError); |
|
31 | PyErr_SetFromErrno(PyExc_OSError); | |
32 | goto bail; |
|
32 | goto bail; | |
33 | } |
|
33 | } | |
34 |
|
34 | |||
35 | ret = PyInt_FromLong(fd); |
|
35 | ret = PyInt_FromLong(fd); | |
36 | if (ret == NULL) |
|
36 | if (ret == NULL) | |
37 | goto bail; |
|
37 | goto bail; | |
38 |
|
38 | |||
39 | goto done; |
|
39 | goto done; | |
40 |
|
40 | |||
41 | bail: |
|
41 | bail: | |
42 | if (fd != -1) |
|
42 | if (fd != -1) | |
43 | close(fd); |
|
43 | close(fd); | |
44 |
|
44 | |||
45 | Py_CLEAR(ret); |
|
45 | Py_CLEAR(ret); | |
46 |
|
46 | |||
47 | done: |
|
47 | done: | |
48 | return ret; |
|
48 | return ret; | |
49 | } |
|
49 | } | |
50 |
|
50 | |||
51 | PyDoc_STRVAR( |
|
51 | PyDoc_STRVAR( | |
52 | init_doc, |
|
52 | init_doc, | |
53 | "init() -> fd\n" |
|
53 | "init() -> fd\n" | |
54 | "\n" |
|
54 | "\n" | |
55 | "Initialise an inotify instance.\n" |
|
55 | "Initialise an inotify instance.\n" | |
56 | "Return a file descriptor associated with a new inotify event queue."); |
|
56 | "Return a file descriptor associated with a new inotify event queue."); | |
57 |
|
57 | |||
58 | static PyObject *add_watch(PyObject *self, PyObject *args) |
|
58 | static PyObject *add_watch(PyObject *self, PyObject *args) | |
59 | { |
|
59 | { | |
60 | PyObject *ret = NULL; |
|
60 | PyObject *ret = NULL; | |
61 | uint32_t mask; |
|
61 | uint32_t mask; | |
62 | int wd = -1; |
|
62 | int wd = -1; | |
63 | char *path; |
|
63 | char *path; | |
64 | int fd; |
|
64 | int fd; | |
65 |
|
65 | |||
66 | if (!PyArg_ParseTuple(args, "isI:add_watch", &fd, &path, &mask)) |
|
66 | if (!PyArg_ParseTuple(args, "isI:add_watch", &fd, &path, &mask)) | |
67 | goto bail; |
|
67 | goto bail; | |
68 |
|
68 | |||
69 | Py_BEGIN_ALLOW_THREADS; |
|
69 | Py_BEGIN_ALLOW_THREADS; | |
70 | wd = inotify_add_watch(fd, path, mask); |
|
70 | wd = inotify_add_watch(fd, path, mask); | |
71 | Py_END_ALLOW_THREADS; |
|
71 | Py_END_ALLOW_THREADS; | |
72 |
|
72 | |||
73 | if (wd == -1) { |
|
73 | if (wd == -1) { | |
74 | PyErr_SetFromErrnoWithFilename(PyExc_OSError, path); |
|
74 | PyErr_SetFromErrnoWithFilename(PyExc_OSError, path); | |
75 | goto bail; |
|
75 | goto bail; | |
76 | } |
|
76 | } | |
77 |
|
77 | |||
78 | ret = PyInt_FromLong(wd); |
|
78 | ret = PyInt_FromLong(wd); | |
79 | if (ret == NULL) |
|
79 | if (ret == NULL) | |
80 | goto bail; |
|
80 | goto bail; | |
81 |
|
81 | |||
82 | goto done; |
|
82 | goto done; | |
83 |
|
83 | |||
84 | bail: |
|
84 | bail: | |
85 | if (wd != -1) |
|
85 | if (wd != -1) | |
86 | inotify_rm_watch(fd, wd); |
|
86 | inotify_rm_watch(fd, wd); | |
87 |
|
87 | |||
88 | Py_CLEAR(ret); |
|
88 | Py_CLEAR(ret); | |
89 |
|
89 | |||
90 | done: |
|
90 | done: | |
91 | return ret; |
|
91 | return ret; | |
92 | } |
|
92 | } | |
93 |
|
93 | |||
94 | PyDoc_STRVAR( |
|
94 | PyDoc_STRVAR( | |
95 | add_watch_doc, |
|
95 | add_watch_doc, | |
96 | "add_watch(fd, path, mask) -> wd\n" |
|
96 | "add_watch(fd, path, mask) -> wd\n" | |
97 | "\n" |
|
97 | "\n" | |
98 | "Add a watch to an inotify instance, or modify an existing watch.\n" |
|
98 | "Add a watch to an inotify instance, or modify an existing watch.\n" | |
99 | "\n" |
|
99 | "\n" | |
100 | " fd: file descriptor returned by init()\n" |
|
100 | " fd: file descriptor returned by init()\n" | |
101 | " path: path to watch\n" |
|
101 | " path: path to watch\n" | |
102 | " mask: mask of events to watch for\n" |
|
102 | " mask: mask of events to watch for\n" | |
103 | "\n" |
|
103 | "\n" | |
104 | "Return a unique numeric watch descriptor for the inotify instance\n" |
|
104 | "Return a unique numeric watch descriptor for the inotify instance\n" | |
105 | "mapped by the file descriptor."); |
|
105 | "mapped by the file descriptor."); | |
106 |
|
106 | |||
107 | static PyObject *remove_watch(PyObject *self, PyObject *args) |
|
107 | static PyObject *remove_watch(PyObject *self, PyObject *args) | |
108 | { |
|
108 | { | |
109 | uint32_t wd; |
|
109 | uint32_t wd; | |
110 | int fd; |
|
110 | int fd; | |
111 | int r; |
|
111 | int r; | |
112 |
|
112 | |||
113 | if (!PyArg_ParseTuple(args, "iI:remove_watch", &fd, &wd)) |
|
113 | if (!PyArg_ParseTuple(args, "iI:remove_watch", &fd, &wd)) | |
114 | return NULL; |
|
114 | return NULL; | |
115 |
|
115 | |||
116 | Py_BEGIN_ALLOW_THREADS; |
|
116 | Py_BEGIN_ALLOW_THREADS; | |
117 | r = inotify_rm_watch(fd, wd); |
|
117 | r = inotify_rm_watch(fd, wd); | |
118 | Py_END_ALLOW_THREADS; |
|
118 | Py_END_ALLOW_THREADS; | |
119 |
|
119 | |||
120 | if (r == -1) { |
|
120 | if (r == -1) { | |
121 | PyErr_SetFromErrno(PyExc_OSError); |
|
121 | PyErr_SetFromErrno(PyExc_OSError); | |
122 | return NULL; |
|
122 | return NULL; | |
123 | } |
|
123 | } | |
124 |
|
124 | |||
125 | Py_INCREF(Py_None); |
|
125 | Py_INCREF(Py_None); | |
126 | return Py_None; |
|
126 | return Py_None; | |
127 | } |
|
127 | } | |
128 |
|
128 | |||
129 | PyDoc_STRVAR( |
|
129 | PyDoc_STRVAR( | |
130 | remove_watch_doc, |
|
130 | remove_watch_doc, | |
131 | "remove_watch(fd, wd)\n" |
|
131 | "remove_watch(fd, wd)\n" | |
132 | "\n" |
|
132 | "\n" | |
133 | " fd: file descriptor returned by init()\n" |
|
133 | " fd: file descriptor returned by init()\n" | |
134 | " wd: watch descriptor returned by add_watch()\n" |
|
134 | " wd: watch descriptor returned by add_watch()\n" | |
135 | "\n" |
|
135 | "\n" | |
136 | "Remove a watch associated with the watch descriptor wd from the\n" |
|
136 | "Remove a watch associated with the watch descriptor wd from the\n" | |
137 | "inotify instance associated with the file descriptor fd.\n" |
|
137 | "inotify instance associated with the file descriptor fd.\n" | |
138 | "\n" |
|
138 | "\n" | |
139 | "Removing a watch causes an IN_IGNORED event to be generated for this\n" |
|
139 | "Removing a watch causes an IN_IGNORED event to be generated for this\n" | |
140 | "watch descriptor."); |
|
140 | "watch descriptor."); | |
141 |
|
141 | |||
142 | #define bit_name(x) {x, #x} |
|
142 | #define bit_name(x) {x, #x} | |
143 |
|
143 | |||
144 | static struct { |
|
144 | static struct { | |
145 | int bit; |
|
145 | int bit; | |
146 | const char *name; |
|
146 | const char *name; | |
147 | PyObject *pyname; |
|
147 | PyObject *pyname; | |
148 | } bit_names[] = { |
|
148 | } bit_names[] = { | |
149 | bit_name(IN_ACCESS), |
|
149 | bit_name(IN_ACCESS), | |
150 | bit_name(IN_MODIFY), |
|
150 | bit_name(IN_MODIFY), | |
151 | bit_name(IN_ATTRIB), |
|
151 | bit_name(IN_ATTRIB), | |
152 | bit_name(IN_CLOSE_WRITE), |
|
152 | bit_name(IN_CLOSE_WRITE), | |
153 | bit_name(IN_CLOSE_NOWRITE), |
|
153 | bit_name(IN_CLOSE_NOWRITE), | |
154 | bit_name(IN_OPEN), |
|
154 | bit_name(IN_OPEN), | |
155 | bit_name(IN_MOVED_FROM), |
|
155 | bit_name(IN_MOVED_FROM), | |
156 | bit_name(IN_MOVED_TO), |
|
156 | bit_name(IN_MOVED_TO), | |
157 | bit_name(IN_CREATE), |
|
157 | bit_name(IN_CREATE), | |
158 | bit_name(IN_DELETE), |
|
158 | bit_name(IN_DELETE), | |
159 | bit_name(IN_DELETE_SELF), |
|
159 | bit_name(IN_DELETE_SELF), | |
160 | bit_name(IN_MOVE_SELF), |
|
160 | bit_name(IN_MOVE_SELF), | |
161 | bit_name(IN_UNMOUNT), |
|
161 | bit_name(IN_UNMOUNT), | |
162 | bit_name(IN_Q_OVERFLOW), |
|
162 | bit_name(IN_Q_OVERFLOW), | |
163 | bit_name(IN_IGNORED), |
|
163 | bit_name(IN_IGNORED), | |
164 | bit_name(IN_ONLYDIR), |
|
164 | bit_name(IN_ONLYDIR), | |
165 | bit_name(IN_DONT_FOLLOW), |
|
165 | bit_name(IN_DONT_FOLLOW), | |
166 | bit_name(IN_MASK_ADD), |
|
166 | bit_name(IN_MASK_ADD), | |
167 | bit_name(IN_ISDIR), |
|
167 | bit_name(IN_ISDIR), | |
168 | bit_name(IN_ONESHOT), |
|
168 | bit_name(IN_ONESHOT), | |
169 | {0} |
|
169 | {0} | |
170 | }; |
|
170 | }; | |
171 |
|
171 | |||
172 | static PyObject *decode_mask(int mask) |
|
172 | static PyObject *decode_mask(int mask) | |
173 | { |
|
173 | { | |
174 | PyObject *ret = PyList_New(0); |
|
174 | PyObject *ret = PyList_New(0); | |
175 | int i; |
|
175 | int i; | |
176 |
|
176 | |||
177 | if (ret == NULL) |
|
177 | if (ret == NULL) | |
178 | goto bail; |
|
178 | goto bail; | |
179 |
|
179 | |||
180 | for (i = 0; bit_names[i].bit; i++) { |
|
180 | for (i = 0; bit_names[i].bit; i++) { | |
181 | if (mask & bit_names[i].bit) { |
|
181 | if (mask & bit_names[i].bit) { | |
182 | if (bit_names[i].pyname == NULL) { |
|
182 | if (bit_names[i].pyname == NULL) { | |
183 | bit_names[i].pyname = PyString_FromString(bit_names[i].name); |
|
183 | bit_names[i].pyname = PyString_FromString(bit_names[i].name); | |
184 | if (bit_names[i].pyname == NULL) |
|
184 | if (bit_names[i].pyname == NULL) | |
185 | goto bail; |
|
185 | goto bail; | |
186 | } |
|
186 | } | |
187 | Py_INCREF(bit_names[i].pyname); |
|
187 | Py_INCREF(bit_names[i].pyname); | |
188 | if (PyList_Append(ret, bit_names[i].pyname) == -1) |
|
188 | if (PyList_Append(ret, bit_names[i].pyname) == -1) | |
189 | goto bail; |
|
189 | goto bail; | |
190 | } |
|
190 | } | |
191 | } |
|
191 | } | |
192 |
|
192 | |||
193 | goto done; |
|
193 | goto done; | |
194 |
|
194 | |||
195 | bail: |
|
195 | bail: | |
196 | Py_CLEAR(ret); |
|
196 | Py_CLEAR(ret); | |
197 |
|
197 | |||
198 | done: |
|
198 | done: | |
199 | return ret; |
|
199 | return ret; | |
200 | } |
|
200 | } | |
201 |
|
201 | |||
202 | static PyObject *pydecode_mask(PyObject *self, PyObject *args) |
|
202 | static PyObject *pydecode_mask(PyObject *self, PyObject *args) | |
203 | { |
|
203 | { | |
204 | int mask; |
|
204 | int mask; | |
205 |
|
205 | |||
206 | if (!PyArg_ParseTuple(args, "i:decode_mask", &mask)) |
|
206 | if (!PyArg_ParseTuple(args, "i:decode_mask", &mask)) | |
207 | return NULL; |
|
207 | return NULL; | |
208 |
|
208 | |||
209 | return decode_mask(mask); |
|
209 | return decode_mask(mask); | |
210 | } |
|
210 | } | |
211 |
|
211 | |||
212 | PyDoc_STRVAR( |
|
212 | PyDoc_STRVAR( | |
213 | decode_mask_doc, |
|
213 | decode_mask_doc, | |
214 | "decode_mask(mask) -> list_of_strings\n" |
|
214 | "decode_mask(mask) -> list_of_strings\n" | |
215 | "\n" |
|
215 | "\n" | |
216 | "Decode an inotify mask value into a list of strings that give the\n" |
|
216 | "Decode an inotify mask value into a list of strings that give the\n" | |
217 | "name of each bit set in the mask."); |
|
217 | "name of each bit set in the mask."); | |
218 |
|
218 | |||
219 | static char doc[] = "Low-level inotify interface wrappers."; |
|
219 | static char doc[] = "Low-level inotify interface wrappers."; | |
220 |
|
220 | |||
221 | static void define_const(PyObject *dict, const char *name, uint32_t val) |
|
221 | static void define_const(PyObject *dict, const char *name, uint32_t val) | |
222 | { |
|
222 | { | |
223 | PyObject *pyval = PyInt_FromLong(val); |
|
223 | PyObject *pyval = PyInt_FromLong(val); | |
224 | PyObject *pyname = PyString_FromString(name); |
|
224 | PyObject *pyname = PyString_FromString(name); | |
225 |
|
225 | |||
226 | if (!pyname || !pyval) |
|
226 | if (!pyname || !pyval) | |
227 | goto bail; |
|
227 | goto bail; | |
228 |
|
228 | |||
229 | PyDict_SetItem(dict, pyname, pyval); |
|
229 | PyDict_SetItem(dict, pyname, pyval); | |
230 |
|
230 | |||
231 | bail: |
|
231 | bail: | |
232 | Py_XDECREF(pyname); |
|
232 | Py_XDECREF(pyname); | |
233 | Py_XDECREF(pyval); |
|
233 | Py_XDECREF(pyval); | |
234 | } |
|
234 | } | |
235 |
|
235 | |||
236 | static void define_consts(PyObject *dict) |
|
236 | static void define_consts(PyObject *dict) | |
237 | { |
|
237 | { | |
238 | define_const(dict, "IN_ACCESS", IN_ACCESS); |
|
238 | define_const(dict, "IN_ACCESS", IN_ACCESS); | |
239 | define_const(dict, "IN_MODIFY", IN_MODIFY); |
|
239 | define_const(dict, "IN_MODIFY", IN_MODIFY); | |
240 | define_const(dict, "IN_ATTRIB", IN_ATTRIB); |
|
240 | define_const(dict, "IN_ATTRIB", IN_ATTRIB); | |
241 | define_const(dict, "IN_CLOSE_WRITE", IN_CLOSE_WRITE); |
|
241 | define_const(dict, "IN_CLOSE_WRITE", IN_CLOSE_WRITE); | |
242 | define_const(dict, "IN_CLOSE_NOWRITE", IN_CLOSE_NOWRITE); |
|
242 | define_const(dict, "IN_CLOSE_NOWRITE", IN_CLOSE_NOWRITE); | |
243 | define_const(dict, "IN_OPEN", IN_OPEN); |
|
243 | define_const(dict, "IN_OPEN", IN_OPEN); | |
244 | define_const(dict, "IN_MOVED_FROM", IN_MOVED_FROM); |
|
244 | define_const(dict, "IN_MOVED_FROM", IN_MOVED_FROM); | |
245 | define_const(dict, "IN_MOVED_TO", IN_MOVED_TO); |
|
245 | define_const(dict, "IN_MOVED_TO", IN_MOVED_TO); | |
246 |
|
246 | |||
247 | define_const(dict, "IN_CLOSE", IN_CLOSE); |
|
247 | define_const(dict, "IN_CLOSE", IN_CLOSE); | |
248 | define_const(dict, "IN_MOVE", IN_MOVE); |
|
248 | define_const(dict, "IN_MOVE", IN_MOVE); | |
249 |
|
249 | |||
250 | define_const(dict, "IN_CREATE", IN_CREATE); |
|
250 | define_const(dict, "IN_CREATE", IN_CREATE); | |
251 | define_const(dict, "IN_DELETE", IN_DELETE); |
|
251 | define_const(dict, "IN_DELETE", IN_DELETE); | |
252 | define_const(dict, "IN_DELETE_SELF", IN_DELETE_SELF); |
|
252 | define_const(dict, "IN_DELETE_SELF", IN_DELETE_SELF); | |
253 | define_const(dict, "IN_MOVE_SELF", IN_MOVE_SELF); |
|
253 | define_const(dict, "IN_MOVE_SELF", IN_MOVE_SELF); | |
254 | define_const(dict, "IN_UNMOUNT", IN_UNMOUNT); |
|
254 | define_const(dict, "IN_UNMOUNT", IN_UNMOUNT); | |
255 | define_const(dict, "IN_Q_OVERFLOW", IN_Q_OVERFLOW); |
|
255 | define_const(dict, "IN_Q_OVERFLOW", IN_Q_OVERFLOW); | |
256 | define_const(dict, "IN_IGNORED", IN_IGNORED); |
|
256 | define_const(dict, "IN_IGNORED", IN_IGNORED); | |
257 |
|
257 | |||
258 | define_const(dict, "IN_ONLYDIR", IN_ONLYDIR); |
|
258 | define_const(dict, "IN_ONLYDIR", IN_ONLYDIR); | |
259 | define_const(dict, "IN_DONT_FOLLOW", IN_DONT_FOLLOW); |
|
259 | define_const(dict, "IN_DONT_FOLLOW", IN_DONT_FOLLOW); | |
260 | define_const(dict, "IN_MASK_ADD", IN_MASK_ADD); |
|
260 | define_const(dict, "IN_MASK_ADD", IN_MASK_ADD); | |
261 | define_const(dict, "IN_ISDIR", IN_ISDIR); |
|
261 | define_const(dict, "IN_ISDIR", IN_ISDIR); | |
262 | define_const(dict, "IN_ONESHOT", IN_ONESHOT); |
|
262 | define_const(dict, "IN_ONESHOT", IN_ONESHOT); | |
263 | define_const(dict, "IN_ALL_EVENTS", IN_ALL_EVENTS); |
|
263 | define_const(dict, "IN_ALL_EVENTS", IN_ALL_EVENTS); | |
264 | } |
|
264 | } | |
265 |
|
265 | |||
266 | struct event { |
|
266 | struct event { | |
267 | PyObject_HEAD |
|
267 | PyObject_HEAD | |
268 | PyObject *wd; |
|
268 | PyObject *wd; | |
269 | PyObject *mask; |
|
269 | PyObject *mask; | |
270 | PyObject *cookie; |
|
270 | PyObject *cookie; | |
271 | PyObject *name; |
|
271 | PyObject *name; | |
272 | }; |
|
272 | }; | |
273 |
|
273 | |||
274 | static PyObject *event_wd(PyObject *self, void *x) |
|
274 | static PyObject *event_wd(PyObject *self, void *x) | |
275 | { |
|
275 | { | |
276 | struct event *evt = (struct event *)self; |
|
276 | struct event *evt = (struct event *)self; | |
277 | Py_INCREF(evt->wd); |
|
277 | Py_INCREF(evt->wd); | |
278 | return evt->wd; |
|
278 | return evt->wd; | |
279 | } |
|
279 | } | |
280 |
|
280 | |||
281 | static PyObject *event_mask(PyObject *self, void *x) |
|
281 | static PyObject *event_mask(PyObject *self, void *x) | |
282 | { |
|
282 | { | |
283 | struct event *evt = (struct event *)self; |
|
283 | struct event *evt = (struct event *)self; | |
284 | Py_INCREF(evt->mask); |
|
284 | Py_INCREF(evt->mask); | |
285 | return evt->mask; |
|
285 | return evt->mask; | |
286 | } |
|
286 | } | |
287 |
|
287 | |||
288 | static PyObject *event_cookie(PyObject *self, void *x) |
|
288 | static PyObject *event_cookie(PyObject *self, void *x) | |
289 | { |
|
289 | { | |
290 | struct event *evt = (struct event *)self; |
|
290 | struct event *evt = (struct event *)self; | |
291 | Py_INCREF(evt->cookie); |
|
291 | Py_INCREF(evt->cookie); | |
292 | return evt->cookie; |
|
292 | return evt->cookie; | |
293 | } |
|
293 | } | |
294 |
|
294 | |||
295 | static PyObject *event_name(PyObject *self, void *x) |
|
295 | static PyObject *event_name(PyObject *self, void *x) | |
296 | { |
|
296 | { | |
297 | struct event *evt = (struct event *)self; |
|
297 | struct event *evt = (struct event *)self; | |
298 | Py_INCREF(evt->name); |
|
298 | Py_INCREF(evt->name); | |
299 | return evt->name; |
|
299 | return evt->name; | |
300 | } |
|
300 | } | |
301 |
|
301 | |||
302 | static struct PyGetSetDef event_getsets[] = { |
|
302 | static struct PyGetSetDef event_getsets[] = { | |
303 | {"wd", event_wd, NULL, |
|
303 | {"wd", event_wd, NULL, | |
304 | "watch descriptor"}, |
|
304 | "watch descriptor"}, | |
305 | {"mask", event_mask, NULL, |
|
305 | {"mask", event_mask, NULL, | |
306 | "event mask"}, |
|
306 | "event mask"}, | |
307 | {"cookie", event_cookie, NULL, |
|
307 | {"cookie", event_cookie, NULL, | |
308 | "rename cookie, if rename-related event"}, |
|
308 | "rename cookie, if rename-related event"}, | |
309 | {"name", event_name, NULL, |
|
309 | {"name", event_name, NULL, | |
310 | "file name"}, |
|
310 | "file name"}, | |
311 | {NULL} |
|
311 | {NULL} | |
312 | }; |
|
312 | }; | |
313 |
|
313 | |||
314 | PyDoc_STRVAR( |
|
314 | PyDoc_STRVAR( | |
315 | event_doc, |
|
315 | event_doc, | |
316 | "event: Structure describing an inotify event."); |
|
316 | "event: Structure describing an inotify event."); | |
317 |
|
317 | |||
318 | static PyObject *event_new(PyTypeObject *t, PyObject *a, PyObject *k) |
|
318 | static PyObject *event_new(PyTypeObject *t, PyObject *a, PyObject *k) | |
319 | { |
|
319 | { | |
320 | return (*t->tp_alloc)(t, 0); |
|
320 | return (*t->tp_alloc)(t, 0); | |
321 | } |
|
321 | } | |
322 |
|
322 | |||
323 | static void event_dealloc(struct event *evt) |
|
323 | static void event_dealloc(struct event *evt) | |
324 | { |
|
324 | { | |
325 | Py_XDECREF(evt->wd); |
|
325 | Py_XDECREF(evt->wd); | |
326 | Py_XDECREF(evt->mask); |
|
326 | Py_XDECREF(evt->mask); | |
327 | Py_XDECREF(evt->cookie); |
|
327 | Py_XDECREF(evt->cookie); | |
328 | Py_XDECREF(evt->name); |
|
328 | Py_XDECREF(evt->name); | |
329 |
|
329 | |||
330 |
( |
|
330 | Py_TYPE(evt)->tp_free(evt); | |
331 | } |
|
331 | } | |
332 |
|
332 | |||
333 | static PyObject *event_repr(struct event *evt) |
|
333 | static PyObject *event_repr(struct event *evt) | |
334 | { |
|
334 | { | |
335 | int wd = PyInt_AsLong(evt->wd); |
|
335 | int wd = PyInt_AsLong(evt->wd); | |
336 | int cookie = evt->cookie == Py_None ? -1 : PyInt_AsLong(evt->cookie); |
|
336 | int cookie = evt->cookie == Py_None ? -1 : PyInt_AsLong(evt->cookie); | |
337 | PyObject *ret = NULL, *pymasks = NULL, *pymask = NULL; |
|
337 | PyObject *ret = NULL, *pymasks = NULL, *pymask = NULL; | |
338 | PyObject *join = NULL; |
|
338 | PyObject *join = NULL; | |
339 | char *maskstr; |
|
339 | char *maskstr; | |
340 |
|
340 | |||
341 | join = PyString_FromString("|"); |
|
341 | join = PyString_FromString("|"); | |
342 | if (join == NULL) |
|
342 | if (join == NULL) | |
343 | goto bail; |
|
343 | goto bail; | |
344 |
|
344 | |||
345 | pymasks = decode_mask(PyInt_AsLong(evt->mask)); |
|
345 | pymasks = decode_mask(PyInt_AsLong(evt->mask)); | |
346 | if (pymasks == NULL) |
|
346 | if (pymasks == NULL) | |
347 | goto bail; |
|
347 | goto bail; | |
348 |
|
348 | |||
349 | pymask = _PyString_Join(join, pymasks); |
|
349 | pymask = _PyString_Join(join, pymasks); | |
350 | if (pymask == NULL) |
|
350 | if (pymask == NULL) | |
351 | goto bail; |
|
351 | goto bail; | |
352 |
|
352 | |||
353 | maskstr = PyString_AsString(pymask); |
|
353 | maskstr = PyString_AsString(pymask); | |
354 |
|
354 | |||
355 | if (evt->name != Py_None) { |
|
355 | if (evt->name != Py_None) { | |
356 | PyObject *pyname = PyString_Repr(evt->name, 1); |
|
356 | PyObject *pyname = PyString_Repr(evt->name, 1); | |
357 | char *name = pyname ? PyString_AsString(pyname) : "???"; |
|
357 | char *name = pyname ? PyString_AsString(pyname) : "???"; | |
358 |
|
358 | |||
359 | if (cookie == -1) |
|
359 | if (cookie == -1) | |
360 | ret = PyString_FromFormat( |
|
360 | ret = PyString_FromFormat( | |
361 | "event(wd=%d, mask=%s, name=%s)", |
|
361 | "event(wd=%d, mask=%s, name=%s)", | |
362 | wd, maskstr, name); |
|
362 | wd, maskstr, name); | |
363 | else |
|
363 | else | |
364 | ret = PyString_FromFormat("event(wd=%d, mask=%s, " |
|
364 | ret = PyString_FromFormat("event(wd=%d, mask=%s, " | |
365 | "cookie=0x%x, name=%s)", |
|
365 | "cookie=0x%x, name=%s)", | |
366 | wd, maskstr, cookie, name); |
|
366 | wd, maskstr, cookie, name); | |
367 |
|
367 | |||
368 | Py_XDECREF(pyname); |
|
368 | Py_XDECREF(pyname); | |
369 | } else { |
|
369 | } else { | |
370 | if (cookie == -1) |
|
370 | if (cookie == -1) | |
371 | ret = PyString_FromFormat("event(wd=%d, mask=%s)", |
|
371 | ret = PyString_FromFormat("event(wd=%d, mask=%s)", | |
372 | wd, maskstr); |
|
372 | wd, maskstr); | |
373 | else { |
|
373 | else { | |
374 | ret = PyString_FromFormat( |
|
374 | ret = PyString_FromFormat( | |
375 | "event(wd=%d, mask=%s, cookie=0x%x)", |
|
375 | "event(wd=%d, mask=%s, cookie=0x%x)", | |
376 | wd, maskstr, cookie); |
|
376 | wd, maskstr, cookie); | |
377 | } |
|
377 | } | |
378 | } |
|
378 | } | |
379 |
|
379 | |||
380 | goto done; |
|
380 | goto done; | |
381 | bail: |
|
381 | bail: | |
382 | Py_CLEAR(ret); |
|
382 | Py_CLEAR(ret); | |
383 |
|
383 | |||
384 | done: |
|
384 | done: | |
385 | Py_XDECREF(pymask); |
|
385 | Py_XDECREF(pymask); | |
386 | Py_XDECREF(pymasks); |
|
386 | Py_XDECREF(pymasks); | |
387 | Py_XDECREF(join); |
|
387 | Py_XDECREF(join); | |
388 |
|
388 | |||
389 | return ret; |
|
389 | return ret; | |
390 | } |
|
390 | } | |
391 |
|
391 | |||
392 | static PyTypeObject event_type = { |
|
392 | static PyTypeObject event_type = { | |
393 | PyObject_HEAD_INIT(NULL) |
|
393 | PyObject_HEAD_INIT(NULL) | |
394 | 0, /*ob_size*/ |
|
394 | 0, /*ob_size*/ | |
395 | "_inotify.event", /*tp_name*/ |
|
395 | "_inotify.event", /*tp_name*/ | |
396 | sizeof(struct event), /*tp_basicsize*/ |
|
396 | sizeof(struct event), /*tp_basicsize*/ | |
397 | 0, /*tp_itemsize*/ |
|
397 | 0, /*tp_itemsize*/ | |
398 | (destructor)event_dealloc, /*tp_dealloc*/ |
|
398 | (destructor)event_dealloc, /*tp_dealloc*/ | |
399 | 0, /*tp_print*/ |
|
399 | 0, /*tp_print*/ | |
400 | 0, /*tp_getattr*/ |
|
400 | 0, /*tp_getattr*/ | |
401 | 0, /*tp_setattr*/ |
|
401 | 0, /*tp_setattr*/ | |
402 | 0, /*tp_compare*/ |
|
402 | 0, /*tp_compare*/ | |
403 | (reprfunc)event_repr, /*tp_repr*/ |
|
403 | (reprfunc)event_repr, /*tp_repr*/ | |
404 | 0, /*tp_as_number*/ |
|
404 | 0, /*tp_as_number*/ | |
405 | 0, /*tp_as_sequence*/ |
|
405 | 0, /*tp_as_sequence*/ | |
406 | 0, /*tp_as_mapping*/ |
|
406 | 0, /*tp_as_mapping*/ | |
407 | 0, /*tp_hash */ |
|
407 | 0, /*tp_hash */ | |
408 | 0, /*tp_call*/ |
|
408 | 0, /*tp_call*/ | |
409 | 0, /*tp_str*/ |
|
409 | 0, /*tp_str*/ | |
410 | 0, /*tp_getattro*/ |
|
410 | 0, /*tp_getattro*/ | |
411 | 0, /*tp_setattro*/ |
|
411 | 0, /*tp_setattro*/ | |
412 | 0, /*tp_as_buffer*/ |
|
412 | 0, /*tp_as_buffer*/ | |
413 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /*tp_flags*/ |
|
413 | Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /*tp_flags*/ | |
414 | event_doc, /* tp_doc */ |
|
414 | event_doc, /* tp_doc */ | |
415 | 0, /* tp_traverse */ |
|
415 | 0, /* tp_traverse */ | |
416 | 0, /* tp_clear */ |
|
416 | 0, /* tp_clear */ | |
417 | 0, /* tp_richcompare */ |
|
417 | 0, /* tp_richcompare */ | |
418 | 0, /* tp_weaklistoffset */ |
|
418 | 0, /* tp_weaklistoffset */ | |
419 | 0, /* tp_iter */ |
|
419 | 0, /* tp_iter */ | |
420 | 0, /* tp_iternext */ |
|
420 | 0, /* tp_iternext */ | |
421 | 0, /* tp_methods */ |
|
421 | 0, /* tp_methods */ | |
422 | 0, /* tp_members */ |
|
422 | 0, /* tp_members */ | |
423 | event_getsets, /* tp_getset */ |
|
423 | event_getsets, /* tp_getset */ | |
424 | 0, /* tp_base */ |
|
424 | 0, /* tp_base */ | |
425 | 0, /* tp_dict */ |
|
425 | 0, /* tp_dict */ | |
426 | 0, /* tp_descr_get */ |
|
426 | 0, /* tp_descr_get */ | |
427 | 0, /* tp_descr_set */ |
|
427 | 0, /* tp_descr_set */ | |
428 | 0, /* tp_dictoffset */ |
|
428 | 0, /* tp_dictoffset */ | |
429 | 0, /* tp_init */ |
|
429 | 0, /* tp_init */ | |
430 | 0, /* tp_alloc */ |
|
430 | 0, /* tp_alloc */ | |
431 | event_new, /* tp_new */ |
|
431 | event_new, /* tp_new */ | |
432 | }; |
|
432 | }; | |
433 |
|
433 | |||
434 | PyObject *read_events(PyObject *self, PyObject *args) |
|
434 | PyObject *read_events(PyObject *self, PyObject *args) | |
435 | { |
|
435 | { | |
436 | PyObject *ctor_args = NULL; |
|
436 | PyObject *ctor_args = NULL; | |
437 | PyObject *pybufsize = NULL; |
|
437 | PyObject *pybufsize = NULL; | |
438 | PyObject *ret = NULL; |
|
438 | PyObject *ret = NULL; | |
439 | int bufsize = 65536; |
|
439 | int bufsize = 65536; | |
440 | char *buf = NULL; |
|
440 | char *buf = NULL; | |
441 | int nread, pos; |
|
441 | int nread, pos; | |
442 | int fd; |
|
442 | int fd; | |
443 |
|
443 | |||
444 | if (!PyArg_ParseTuple(args, "i|O:read", &fd, &pybufsize)) |
|
444 | if (!PyArg_ParseTuple(args, "i|O:read", &fd, &pybufsize)) | |
445 | goto bail; |
|
445 | goto bail; | |
446 |
|
446 | |||
447 | if (pybufsize && pybufsize != Py_None) |
|
447 | if (pybufsize && pybufsize != Py_None) | |
448 | bufsize = PyInt_AsLong(pybufsize); |
|
448 | bufsize = PyInt_AsLong(pybufsize); | |
449 |
|
449 | |||
450 | ret = PyList_New(0); |
|
450 | ret = PyList_New(0); | |
451 | if (ret == NULL) |
|
451 | if (ret == NULL) | |
452 | goto bail; |
|
452 | goto bail; | |
453 |
|
453 | |||
454 | if (bufsize <= 0) { |
|
454 | if (bufsize <= 0) { | |
455 | int r; |
|
455 | int r; | |
456 |
|
456 | |||
457 | Py_BEGIN_ALLOW_THREADS; |
|
457 | Py_BEGIN_ALLOW_THREADS; | |
458 | r = ioctl(fd, FIONREAD, &bufsize); |
|
458 | r = ioctl(fd, FIONREAD, &bufsize); | |
459 | Py_END_ALLOW_THREADS; |
|
459 | Py_END_ALLOW_THREADS; | |
460 |
|
460 | |||
461 | if (r == -1) { |
|
461 | if (r == -1) { | |
462 | PyErr_SetFromErrno(PyExc_OSError); |
|
462 | PyErr_SetFromErrno(PyExc_OSError); | |
463 | goto bail; |
|
463 | goto bail; | |
464 | } |
|
464 | } | |
465 | if (bufsize == 0) |
|
465 | if (bufsize == 0) | |
466 | goto done; |
|
466 | goto done; | |
467 | } |
|
467 | } | |
468 | else { |
|
468 | else { | |
469 | static long name_max; |
|
469 | static long name_max; | |
470 | static long name_fd = -1; |
|
470 | static long name_fd = -1; | |
471 | long min; |
|
471 | long min; | |
472 |
|
472 | |||
473 | if (name_fd != fd) { |
|
473 | if (name_fd != fd) { | |
474 | name_fd = fd; |
|
474 | name_fd = fd; | |
475 | Py_BEGIN_ALLOW_THREADS; |
|
475 | Py_BEGIN_ALLOW_THREADS; | |
476 | name_max = fpathconf(fd, _PC_NAME_MAX); |
|
476 | name_max = fpathconf(fd, _PC_NAME_MAX); | |
477 | Py_END_ALLOW_THREADS; |
|
477 | Py_END_ALLOW_THREADS; | |
478 | } |
|
478 | } | |
479 |
|
479 | |||
480 | min = sizeof(struct inotify_event) + name_max + 1; |
|
480 | min = sizeof(struct inotify_event) + name_max + 1; | |
481 |
|
481 | |||
482 | if (bufsize < min) { |
|
482 | if (bufsize < min) { | |
483 | PyErr_Format(PyExc_ValueError, |
|
483 | PyErr_Format(PyExc_ValueError, | |
484 | "bufsize must be at least %d", (int)min); |
|
484 | "bufsize must be at least %d", (int)min); | |
485 | goto bail; |
|
485 | goto bail; | |
486 | } |
|
486 | } | |
487 | } |
|
487 | } | |
488 |
|
488 | |||
489 | buf = alloca(bufsize); |
|
489 | buf = alloca(bufsize); | |
490 |
|
490 | |||
491 | Py_BEGIN_ALLOW_THREADS; |
|
491 | Py_BEGIN_ALLOW_THREADS; | |
492 | nread = read(fd, buf, bufsize); |
|
492 | nread = read(fd, buf, bufsize); | |
493 | Py_END_ALLOW_THREADS; |
|
493 | Py_END_ALLOW_THREADS; | |
494 |
|
494 | |||
495 | if (nread == -1) { |
|
495 | if (nread == -1) { | |
496 | PyErr_SetFromErrno(PyExc_OSError); |
|
496 | PyErr_SetFromErrno(PyExc_OSError); | |
497 | goto bail; |
|
497 | goto bail; | |
498 | } |
|
498 | } | |
499 |
|
499 | |||
500 | ctor_args = PyTuple_New(0); |
|
500 | ctor_args = PyTuple_New(0); | |
501 |
|
501 | |||
502 | if (ctor_args == NULL) |
|
502 | if (ctor_args == NULL) | |
503 | goto bail; |
|
503 | goto bail; | |
504 |
|
504 | |||
505 | pos = 0; |
|
505 | pos = 0; | |
506 |
|
506 | |||
507 | while (pos < nread) { |
|
507 | while (pos < nread) { | |
508 | struct inotify_event *in = (struct inotify_event *)(buf + pos); |
|
508 | struct inotify_event *in = (struct inotify_event *)(buf + pos); | |
509 | struct event *evt; |
|
509 | struct event *evt; | |
510 | PyObject *obj; |
|
510 | PyObject *obj; | |
511 |
|
511 | |||
512 | obj = PyObject_CallObject((PyObject *)&event_type, ctor_args); |
|
512 | obj = PyObject_CallObject((PyObject *)&event_type, ctor_args); | |
513 |
|
513 | |||
514 | if (obj == NULL) |
|
514 | if (obj == NULL) | |
515 | goto bail; |
|
515 | goto bail; | |
516 |
|
516 | |||
517 | evt = (struct event *)obj; |
|
517 | evt = (struct event *)obj; | |
518 |
|
518 | |||
519 | evt->wd = PyInt_FromLong(in->wd); |
|
519 | evt->wd = PyInt_FromLong(in->wd); | |
520 | evt->mask = PyInt_FromLong(in->mask); |
|
520 | evt->mask = PyInt_FromLong(in->mask); | |
521 | if (in->mask & IN_MOVE) |
|
521 | if (in->mask & IN_MOVE) | |
522 | evt->cookie = PyInt_FromLong(in->cookie); |
|
522 | evt->cookie = PyInt_FromLong(in->cookie); | |
523 | else { |
|
523 | else { | |
524 | Py_INCREF(Py_None); |
|
524 | Py_INCREF(Py_None); | |
525 | evt->cookie = Py_None; |
|
525 | evt->cookie = Py_None; | |
526 | } |
|
526 | } | |
527 | if (in->len) |
|
527 | if (in->len) | |
528 | evt->name = PyString_FromString(in->name); |
|
528 | evt->name = PyString_FromString(in->name); | |
529 | else { |
|
529 | else { | |
530 | Py_INCREF(Py_None); |
|
530 | Py_INCREF(Py_None); | |
531 | evt->name = Py_None; |
|
531 | evt->name = Py_None; | |
532 | } |
|
532 | } | |
533 |
|
533 | |||
534 | if (!evt->wd || !evt->mask || !evt->cookie || !evt->name) |
|
534 | if (!evt->wd || !evt->mask || !evt->cookie || !evt->name) | |
535 | goto mybail; |
|
535 | goto mybail; | |
536 |
|
536 | |||
537 | if (PyList_Append(ret, obj) == -1) |
|
537 | if (PyList_Append(ret, obj) == -1) | |
538 | goto mybail; |
|
538 | goto mybail; | |
539 |
|
539 | |||
540 | pos += sizeof(struct inotify_event) + in->len; |
|
540 | pos += sizeof(struct inotify_event) + in->len; | |
541 | continue; |
|
541 | continue; | |
542 |
|
542 | |||
543 | mybail: |
|
543 | mybail: | |
544 | Py_CLEAR(evt->wd); |
|
544 | Py_CLEAR(evt->wd); | |
545 | Py_CLEAR(evt->mask); |
|
545 | Py_CLEAR(evt->mask); | |
546 | Py_CLEAR(evt->cookie); |
|
546 | Py_CLEAR(evt->cookie); | |
547 | Py_CLEAR(evt->name); |
|
547 | Py_CLEAR(evt->name); | |
548 | Py_DECREF(obj); |
|
548 | Py_DECREF(obj); | |
549 |
|
549 | |||
550 | goto bail; |
|
550 | goto bail; | |
551 | } |
|
551 | } | |
552 |
|
552 | |||
553 | goto done; |
|
553 | goto done; | |
554 |
|
554 | |||
555 | bail: |
|
555 | bail: | |
556 | Py_CLEAR(ret); |
|
556 | Py_CLEAR(ret); | |
557 |
|
557 | |||
558 | done: |
|
558 | done: | |
559 | Py_XDECREF(ctor_args); |
|
559 | Py_XDECREF(ctor_args); | |
560 |
|
560 | |||
561 | return ret; |
|
561 | return ret; | |
562 | } |
|
562 | } | |
563 |
|
563 | |||
564 | PyDoc_STRVAR( |
|
564 | PyDoc_STRVAR( | |
565 | read_doc, |
|
565 | read_doc, | |
566 | "read(fd, bufsize[=65536]) -> list_of_events\n" |
|
566 | "read(fd, bufsize[=65536]) -> list_of_events\n" | |
567 | "\n" |
|
567 | "\n" | |
568 | "\nRead inotify events from a file descriptor.\n" |
|
568 | "\nRead inotify events from a file descriptor.\n" | |
569 | "\n" |
|
569 | "\n" | |
570 | " fd: file descriptor returned by init()\n" |
|
570 | " fd: file descriptor returned by init()\n" | |
571 | " bufsize: size of buffer to read into, in bytes\n" |
|
571 | " bufsize: size of buffer to read into, in bytes\n" | |
572 | "\n" |
|
572 | "\n" | |
573 | "Return a list of event objects.\n" |
|
573 | "Return a list of event objects.\n" | |
574 | "\n" |
|
574 | "\n" | |
575 | "If bufsize is > 0, block until events are available to be read.\n" |
|
575 | "If bufsize is > 0, block until events are available to be read.\n" | |
576 | "Otherwise, immediately return all events that can be read without\n" |
|
576 | "Otherwise, immediately return all events that can be read without\n" | |
577 | "blocking."); |
|
577 | "blocking."); | |
578 |
|
578 | |||
579 | static PyMethodDef methods[] = { |
|
579 | static PyMethodDef methods[] = { | |
580 | {"init", init, METH_VARARGS, init_doc}, |
|
580 | {"init", init, METH_VARARGS, init_doc}, | |
581 | {"add_watch", add_watch, METH_VARARGS, add_watch_doc}, |
|
581 | {"add_watch", add_watch, METH_VARARGS, add_watch_doc}, | |
582 | {"remove_watch", remove_watch, METH_VARARGS, remove_watch_doc}, |
|
582 | {"remove_watch", remove_watch, METH_VARARGS, remove_watch_doc}, | |
583 | {"read", read_events, METH_VARARGS, read_doc}, |
|
583 | {"read", read_events, METH_VARARGS, read_doc}, | |
584 | {"decode_mask", pydecode_mask, METH_VARARGS, decode_mask_doc}, |
|
584 | {"decode_mask", pydecode_mask, METH_VARARGS, decode_mask_doc}, | |
585 | {NULL}, |
|
585 | {NULL}, | |
586 | }; |
|
586 | }; | |
587 |
|
587 | |||
588 | void init_inotify(void) |
|
588 | void init_inotify(void) | |
589 | { |
|
589 | { | |
590 | PyObject *mod, *dict; |
|
590 | PyObject *mod, *dict; | |
591 |
|
591 | |||
592 | if (PyType_Ready(&event_type) == -1) |
|
592 | if (PyType_Ready(&event_type) == -1) | |
593 | return; |
|
593 | return; | |
594 |
|
594 | |||
595 | mod = Py_InitModule3("_inotify", methods, doc); |
|
595 | mod = Py_InitModule3("_inotify", methods, doc); | |
596 |
|
596 | |||
597 | dict = PyModule_GetDict(mod); |
|
597 | dict = PyModule_GetDict(mod); | |
598 |
|
598 | |||
599 | if (dict) |
|
599 | if (dict) | |
600 | define_consts(dict); |
|
600 | define_consts(dict); | |
601 | } |
|
601 | } |
General Comments 0
You need to be logged in to leave comments.
Login now