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1 | /* |
1 | /* |
2 | * Copyright (c) 2009 Martin Decky |
2 | * Copyright (c) 2009 Martin Decky |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
8 | * |
8 | * |
9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
13 | * documentation and/or other materials provided with the distribution. |
14 | * - The name of the author may not be used to endorse or promote products |
14 | * - The name of the author may not be used to endorse or promote products |
15 | * derived from this software without specific prior written permission. |
15 | * derived from this software without specific prior written permission. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
29 | /** @addtogroup fs |
29 | /** @addtogroup fs |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | 32 | ||
33 | /** |
33 | /** |
34 | * @file devfs_ops.c |
34 | * @file devfs_ops.c |
35 | * @brief Implementation of VFS operations for the devfs file system server. |
35 | * @brief Implementation of VFS operations for the devfs file system server. |
36 | */ |
36 | */ |
37 | 37 | ||
38 | #include <ipc/ipc.h> |
38 | #include <ipc/ipc.h> |
39 | #include <bool.h> |
39 | #include <bool.h> |
40 | #include <errno.h> |
40 | #include <errno.h> |
41 | #include <malloc.h> |
41 | #include <malloc.h> |
42 | #include <string.h> |
42 | #include <string.h> |
43 | #include <libfs.h> |
43 | #include <libfs.h> |
44 | #include <fibril_sync.h> |
44 | #include <fibril_sync.h> |
45 | #include <adt/hash_table.h> |
45 | #include <adt/hash_table.h> |
46 | #include "devfs.h" |
46 | #include "devfs.h" |
47 | #include "devfs_ops.h" |
47 | #include "devfs_ops.h" |
48 | 48 | ||
49 | #define PLB_GET_CHAR(pos) (devfs_reg.plb_ro[pos % PLB_SIZE]) |
49 | #define PLB_GET_CHAR(pos) (devfs_reg.plb_ro[pos % PLB_SIZE]) |
50 | 50 | ||
51 | /** Opened devices structure */ |
51 | /** Opened devices structure */ |
52 | typedef struct { |
52 | typedef struct { |
53 | dev_handle_t handle; |
53 | dev_handle_t handle; |
54 | int phone; |
54 | int phone; |
55 | size_t refcount; |
55 | size_t refcount; |
56 | link_t link; |
56 | link_t link; |
57 | } device_t; |
57 | } device_t; |
58 | 58 | ||
59 | /** Hash table of opened devices */ |
59 | /** Hash table of opened devices */ |
60 | static hash_table_t devices; |
60 | static hash_table_t devices; |
61 | 61 | ||
62 | /** Hash table mutex */ |
62 | /** Hash table mutex */ |
63 | static FIBRIL_MUTEX_INITIALIZE(devices_mutex); |
63 | static FIBRIL_MUTEX_INITIALIZE(devices_mutex); |
64 | 64 | ||
65 | #define DEVICES_KEYS 1 |
65 | #define DEVICES_KEYS 1 |
66 | #define DEVICES_KEY_HANDLE 0 |
66 | #define DEVICES_KEY_HANDLE 0 |
67 | #define DEVICES_BUCKETS 256 |
67 | #define DEVICES_BUCKETS 256 |
68 | 68 | ||
69 | /* Implementation of hash table interface for the nodes hash table. */ |
69 | /* Implementation of hash table interface for the nodes hash table. */ |
70 | static hash_index_t devices_hash(unsigned long key[]) |
70 | static hash_index_t devices_hash(unsigned long key[]) |
71 | { |
71 | { |
72 | return key[DEVICES_KEY_HANDLE] % DEVICES_BUCKETS; |
72 | return key[DEVICES_KEY_HANDLE] % DEVICES_BUCKETS; |
73 | } |
73 | } |
74 | 74 | ||
75 | static int devices_compare(unsigned long key[], hash_count_t keys, link_t *item) |
75 | static int devices_compare(unsigned long key[], hash_count_t keys, link_t *item) |
76 | { |
76 | { |
77 | device_t *dev = hash_table_get_instance(item, device_t, link); |
77 | device_t *dev = hash_table_get_instance(item, device_t, link); |
78 | return (dev->handle == (dev_handle_t) key[DEVICES_KEY_HANDLE]); |
78 | return (dev->handle == (dev_handle_t) key[DEVICES_KEY_HANDLE]); |
79 | } |
79 | } |
80 | 80 | ||
81 | static void devices_remove_callback(link_t *item) |
81 | static void devices_remove_callback(link_t *item) |
82 | { |
82 | { |
83 | free(hash_table_get_instance(item, device_t, link)); |
83 | free(hash_table_get_instance(item, device_t, link)); |
84 | } |
84 | } |
85 | 85 | ||
86 | static hash_table_operations_t devices_ops = { |
86 | static hash_table_operations_t devices_ops = { |
87 | .hash = devices_hash, |
87 | .hash = devices_hash, |
88 | .compare = devices_compare, |
88 | .compare = devices_compare, |
89 | .remove_callback = devices_remove_callback |
89 | .remove_callback = devices_remove_callback |
90 | }; |
90 | }; |
91 | 91 | ||
92 | bool devfs_init(void) |
92 | bool devfs_init(void) |
93 | { |
93 | { |
94 | if (!hash_table_create(&devices, DEVICES_BUCKETS, |
94 | if (!hash_table_create(&devices, DEVICES_BUCKETS, |
95 | DEVICES_KEYS, &devices_ops)) |
95 | DEVICES_KEYS, &devices_ops)) |
96 | return false; |
96 | return false; |
97 | 97 | ||
98 | if (devmap_get_phone(DEVMAP_CLIENT, IPC_FLAG_BLOCKING) < 0) |
98 | if (devmap_get_phone(DEVMAP_CLIENT, IPC_FLAG_BLOCKING) < 0) |
99 | return false; |
99 | return false; |
100 | 100 | ||
101 | return true; |
101 | return true; |
102 | } |
102 | } |
103 | 103 | ||
104 | void devfs_mounted(ipc_callid_t rid, ipc_call_t *request) |
104 | void devfs_mounted(ipc_callid_t rid, ipc_call_t *request) |
105 | { |
105 | { |
106 | /* Accept the mount options */ |
106 | /* Accept the mount options */ |
107 | ipc_callid_t callid; |
107 | ipc_callid_t callid; |
108 | size_t size; |
108 | size_t size; |
109 | if (!ipc_data_write_receive(&callid, &size)) { |
109 | if (!ipc_data_write_receive(&callid, &size)) { |
110 | ipc_answer_0(callid, EINVAL); |
110 | ipc_answer_0(callid, EINVAL); |
111 | ipc_answer_0(rid, EINVAL); |
111 | ipc_answer_0(rid, EINVAL); |
112 | return; |
112 | return; |
113 | } |
113 | } |
114 | 114 | ||
115 | char *opts = malloc(size + 1); |
115 | char *opts = malloc(size + 1); |
116 | if (!opts) { |
116 | if (!opts) { |
117 | ipc_answer_0(callid, ENOMEM); |
117 | ipc_answer_0(callid, ENOMEM); |
118 | ipc_answer_0(rid, ENOMEM); |
118 | ipc_answer_0(rid, ENOMEM); |
119 | return; |
119 | return; |
120 | } |
120 | } |
121 | 121 | ||
122 | ipcarg_t retval = ipc_data_write_finalize(callid, opts, size); |
122 | ipcarg_t retval = ipc_data_write_finalize(callid, opts, size); |
123 | if (retval != EOK) { |
123 | if (retval != EOK) { |
124 | ipc_answer_0(rid, retval); |
124 | ipc_answer_0(rid, retval); |
125 | free(opts); |
125 | free(opts); |
126 | return; |
126 | return; |
127 | } |
127 | } |
128 | 128 | ||
129 | free(opts); |
129 | free(opts); |
130 | 130 | ||
131 | ipc_answer_3(rid, EOK, 0, 0, 0); |
131 | ipc_answer_3(rid, EOK, 0, 0, 0); |
132 | } |
132 | } |
133 | 133 | ||
134 | void devfs_mount(ipc_callid_t rid, ipc_call_t *request) |
134 | void devfs_mount(ipc_callid_t rid, ipc_call_t *request) |
135 | { |
135 | { |
136 | ipc_answer_0(rid, ENOTSUP); |
136 | ipc_answer_0(rid, ENOTSUP); |
137 | } |
137 | } |
138 | 138 | ||
139 | void devfs_lookup(ipc_callid_t rid, ipc_call_t *request) |
139 | void devfs_lookup(ipc_callid_t rid, ipc_call_t *request) |
140 | { |
140 | { |
141 | ipcarg_t first = IPC_GET_ARG1(*request); |
141 | ipcarg_t first = IPC_GET_ARG1(*request); |
142 | ipcarg_t last = IPC_GET_ARG2(*request); |
142 | ipcarg_t last = IPC_GET_ARG2(*request); |
143 | dev_handle_t dev_handle = IPC_GET_ARG3(*request); |
143 | dev_handle_t dev_handle = IPC_GET_ARG3(*request); |
144 | ipcarg_t lflag = IPC_GET_ARG4(*request); |
144 | ipcarg_t lflag = IPC_GET_ARG4(*request); |
145 | fs_index_t index = IPC_GET_ARG5(*request); |
145 | fs_index_t index = IPC_GET_ARG5(*request); |
146 | 146 | ||
147 | /* Hierarchy is flat, no altroot is supported */ |
147 | /* Hierarchy is flat, no altroot is supported */ |
148 | if (index != 0) { |
148 | if (index != 0) { |
149 | ipc_answer_0(rid, ENOENT); |
149 | ipc_answer_0(rid, ENOENT); |
150 | return; |
150 | return; |
151 | } |
151 | } |
152 | 152 | ||
153 | if ((lflag & L_LINK) || (lflag & L_UNLINK)) { |
153 | if ((lflag & L_LINK) || (lflag & L_UNLINK)) { |
154 | ipc_answer_0(rid, ENOTSUP); |
154 | ipc_answer_0(rid, ENOTSUP); |
155 | return; |
155 | return; |
156 | } |
156 | } |
157 | 157 | ||
158 | /* Eat slash */ |
158 | /* Eat slash */ |
159 | if (PLB_GET_CHAR(first) == '/') { |
159 | if (PLB_GET_CHAR(first) == '/') { |
160 | first++; |
160 | first++; |
161 | first %= PLB_SIZE; |
161 | first %= PLB_SIZE; |
162 | } |
162 | } |
163 | 163 | ||
164 | if (first >= last) { |
164 | if (first >= last) { |
165 | /* Root entry */ |
165 | /* Root entry */ |
166 | if (lflag & L_DIRECTORY) |
166 | if (lflag & L_DIRECTORY) |
167 | ipc_answer_5(rid, EOK, devfs_reg.fs_handle, dev_handle, 0, 0, 0); |
167 | ipc_answer_5(rid, EOK, devfs_reg.fs_handle, dev_handle, 0, 0, 0); |
168 | else |
168 | else |
169 | ipc_answer_0(rid, ENOENT); |
169 | ipc_answer_0(rid, ENOENT); |
170 | } else { |
170 | } else { |
171 | if (lflag & L_FILE) { |
171 | if (lflag & L_FILE) { |
172 | size_t len; |
172 | size_t len; |
173 | if (last >= first) |
173 | if (last >= first) |
174 | len = last - first + 1; |
174 | len = last - first + 1; |
175 | else |
175 | else |
176 | len = first + PLB_SIZE - last + 1; |
176 | len = first + PLB_SIZE - last + 1; |
177 | 177 | ||
178 | char *name = (char *) malloc(len + 1); |
178 | char *name = (char *) malloc(len + 1); |
179 | if (name == NULL) { |
179 | if (name == NULL) { |
180 | ipc_answer_0(rid, ENOMEM); |
180 | ipc_answer_0(rid, ENOMEM); |
181 | return; |
181 | return; |
182 | } |
182 | } |
183 | 183 | ||
184 | size_t i; |
184 | size_t i; |
185 | for (i = 0; i < len; i++) |
185 | for (i = 0; i < len; i++) |
186 | name[i] = PLB_GET_CHAR(first + i); |
186 | name[i] = PLB_GET_CHAR(first + i); |
187 | 187 | ||
188 | name[len] = 0; |
188 | name[len] = 0; |
189 | 189 | ||
190 | dev_handle_t handle; |
190 | dev_handle_t handle; |
191 | if (devmap_device_get_handle(name, &handle, 0) != EOK) { |
191 | if (devmap_device_get_handle(name, &handle, 0) != EOK) { |
192 | free(name); |
192 | free(name); |
193 | ipc_answer_0(rid, ENOENT); |
193 | ipc_answer_0(rid, ENOENT); |
194 | return; |
194 | return; |
195 | } |
195 | } |
196 | 196 | ||
197 | if (lflag & L_OPEN) { |
197 | if (lflag & L_OPEN) { |
198 | unsigned long key[] = { |
198 | unsigned long key[] = { |
199 | [DEVICES_KEY_HANDLE] = (unsigned long) handle |
199 | [DEVICES_KEY_HANDLE] = (unsigned long) handle |
200 | }; |
200 | }; |
201 | 201 | ||
202 | fibril_mutex_lock(&devices_mutex); |
202 | fibril_mutex_lock(&devices_mutex); |
203 | link_t *lnk = hash_table_find(&devices, key); |
203 | link_t *lnk = hash_table_find(&devices, key); |
204 | if (lnk == NULL) { |
204 | if (lnk == NULL) { |
205 | int phone = devmap_device_connect(handle, 0); |
205 | int phone = devmap_device_connect(handle, 0); |
206 | if (phone < 0) { |
206 | if (phone < 0) { |
207 | fibril_mutex_unlock(&devices_mutex); |
207 | fibril_mutex_unlock(&devices_mutex); |
208 | free(name); |
208 | free(name); |
209 | ipc_answer_0(rid, ENOENT); |
209 | ipc_answer_0(rid, ENOENT); |
210 | return; |
210 | return; |
211 | } |
211 | } |
212 | 212 | ||
213 | device_t *dev = (device_t *) malloc(sizeof(device_t)); |
213 | device_t *dev = (device_t *) malloc(sizeof(device_t)); |
214 | if (dev == NULL) { |
214 | if (dev == NULL) { |
215 | fibril_mutex_unlock(&devices_mutex); |
215 | fibril_mutex_unlock(&devices_mutex); |
216 | free(name); |
216 | free(name); |
217 | ipc_answer_0(rid, ENOMEM); |
217 | ipc_answer_0(rid, ENOMEM); |
218 | return; |
218 | return; |
219 | } |
219 | } |
220 | 220 | ||
221 | dev->handle = handle; |
221 | dev->handle = handle; |
222 | dev->phone = phone; |
222 | dev->phone = phone; |
223 | dev->refcount = 1; |
223 | dev->refcount = 1; |
224 | 224 | ||
225 | hash_table_insert(&devices, key, &dev->link); |
225 | hash_table_insert(&devices, key, &dev->link); |
226 | } else { |
226 | } else { |
227 | device_t *dev = hash_table_get_instance(lnk, device_t, link); |
227 | device_t *dev = hash_table_get_instance(lnk, device_t, link); |
228 | dev->refcount++; |
228 | dev->refcount++; |
229 | } |
229 | } |
230 | fibril_mutex_unlock(&devices_mutex); |
230 | fibril_mutex_unlock(&devices_mutex); |
231 | } |
231 | } |
232 | 232 | ||
233 | free(name); |
233 | free(name); |
234 | 234 | ||
235 | ipc_answer_5(rid, EOK, devfs_reg.fs_handle, dev_handle, handle, 0, 1); |
235 | ipc_answer_5(rid, EOK, devfs_reg.fs_handle, dev_handle, handle, 0, 1); |
236 | } else |
236 | } else |
237 | ipc_answer_0(rid, ENOENT); |
237 | ipc_answer_0(rid, ENOENT); |
238 | } |
238 | } |
239 | } |
239 | } |
240 | 240 | ||
241 | void devfs_open_node(ipc_callid_t rid, ipc_call_t *request) |
241 | void devfs_open_node(ipc_callid_t rid, ipc_call_t *request) |
242 | { |
242 | { |
243 | dev_handle_t handle = IPC_GET_ARG2(*request); |
243 | dev_handle_t handle = IPC_GET_ARG2(*request); |
244 | 244 | ||
245 | unsigned long key[] = { |
245 | unsigned long key[] = { |
246 | [DEVICES_KEY_HANDLE] = (unsigned long) handle |
246 | [DEVICES_KEY_HANDLE] = (unsigned long) handle |
247 | }; |
247 | }; |
248 | 248 | ||
249 | fibril_mutex_lock(&devices_mutex); |
249 | fibril_mutex_lock(&devices_mutex); |
250 | link_t *lnk = hash_table_find(&devices, key); |
250 | link_t *lnk = hash_table_find(&devices, key); |
251 | if (lnk == NULL) { |
251 | if (lnk == NULL) { |
252 | int phone = devmap_device_connect(handle, 0); |
252 | int phone = devmap_device_connect(handle, 0); |
253 | if (phone < 0) { |
253 | if (phone < 0) { |
254 | fibril_mutex_unlock(&devices_mutex); |
254 | fibril_mutex_unlock(&devices_mutex); |
255 | ipc_answer_0(rid, ENOENT); |
255 | ipc_answer_0(rid, ENOENT); |
256 | return; |
256 | return; |
257 | } |
257 | } |
258 | 258 | ||
259 | device_t *dev = (device_t *) malloc(sizeof(device_t)); |
259 | device_t *dev = (device_t *) malloc(sizeof(device_t)); |
260 | if (dev == NULL) { |
260 | if (dev == NULL) { |
261 | fibril_mutex_unlock(&devices_mutex); |
261 | fibril_mutex_unlock(&devices_mutex); |
262 | ipc_answer_0(rid, ENOMEM); |
262 | ipc_answer_0(rid, ENOMEM); |
263 | return; |
263 | return; |
264 | } |
264 | } |
265 | 265 | ||
266 | dev->handle = handle; |
266 | dev->handle = handle; |
267 | dev->phone = phone; |
267 | dev->phone = phone; |
268 | dev->refcount = 1; |
268 | dev->refcount = 1; |
269 | 269 | ||
270 | hash_table_insert(&devices, key, &dev->link); |
270 | hash_table_insert(&devices, key, &dev->link); |
271 | } else { |
271 | } else { |
272 | device_t *dev = hash_table_get_instance(lnk, device_t, link); |
272 | device_t *dev = hash_table_get_instance(lnk, device_t, link); |
273 | dev->refcount++; |
273 | dev->refcount++; |
274 | } |
274 | } |
275 | fibril_mutex_unlock(&devices_mutex); |
275 | fibril_mutex_unlock(&devices_mutex); |
276 | 276 | ||
277 | ipc_answer_3(rid, EOK, 0, 1, L_FILE); |
277 | ipc_answer_3(rid, EOK, 0, 1, L_FILE); |
278 | } |
278 | } |
279 | 279 | ||
280 | void devfs_device(ipc_callid_t rid, ipc_call_t *request) |
280 | void devfs_device(ipc_callid_t rid, ipc_call_t *request) |
281 | { |
281 | { |
282 | fs_index_t index = (fs_index_t) IPC_GET_ARG2(*request); |
282 | fs_index_t index = (fs_index_t) IPC_GET_ARG2(*request); |
283 | 283 | ||
284 | if (index != 0) { |
284 | if (index != 0) { |
285 | unsigned long key[] = { |
285 | unsigned long key[] = { |
286 | [DEVICES_KEY_HANDLE] = (unsigned long) index |
286 | [DEVICES_KEY_HANDLE] = (unsigned long) index |
287 | }; |
287 | }; |
288 | 288 | ||
289 | fibril_mutex_lock(&devices_mutex); |
289 | fibril_mutex_lock(&devices_mutex); |
290 | link_t *lnk = hash_table_find(&devices, key); |
290 | link_t *lnk = hash_table_find(&devices, key); |
291 | if (lnk == NULL) { |
291 | if (lnk == NULL) { |
292 | fibril_mutex_unlock(&devices_mutex); |
292 | fibril_mutex_unlock(&devices_mutex); |
293 | ipc_answer_0(rid, ENOENT); |
293 | ipc_answer_0(rid, ENOENT); |
294 | return; |
294 | return; |
295 | } |
295 | } |
296 | fibril_mutex_unlock(&devices_mutex); |
296 | fibril_mutex_unlock(&devices_mutex); |
297 | 297 | ||
298 | ipc_answer_1(rid, EOK, (ipcarg_t) index); |
298 | ipc_answer_1(rid, EOK, (ipcarg_t) index); |
299 | } else |
299 | } else |
300 | ipc_answer_0(rid, ENOTSUP); |
300 | ipc_answer_0(rid, ENOTSUP); |
301 | } |
301 | } |
302 | 302 | ||
303 | void devfs_read(ipc_callid_t rid, ipc_call_t *request) |
303 | void devfs_read(ipc_callid_t rid, ipc_call_t *request) |
304 | { |
304 | { |
305 | fs_index_t index = (fs_index_t) IPC_GET_ARG2(*request); |
305 | fs_index_t index = (fs_index_t) IPC_GET_ARG2(*request); |
306 | off_t pos = (off_t) IPC_GET_ARG3(*request); |
306 | off_t pos = (off_t) IPC_GET_ARG3(*request); |
307 | 307 | ||
308 | if (index != 0) { |
308 | if (index != 0) { |
309 | unsigned long key[] = { |
309 | unsigned long key[] = { |
310 | [DEVICES_KEY_HANDLE] = (unsigned long) index |
310 | [DEVICES_KEY_HANDLE] = (unsigned long) index |
311 | }; |
311 | }; |
312 | 312 | ||
313 | fibril_mutex_lock(&devices_mutex); |
313 | fibril_mutex_lock(&devices_mutex); |
314 | link_t *lnk = hash_table_find(&devices, key); |
314 | link_t *lnk = hash_table_find(&devices, key); |
315 | if (lnk == NULL) { |
315 | if (lnk == NULL) { |
316 | fibril_mutex_unlock(&devices_mutex); |
316 | fibril_mutex_unlock(&devices_mutex); |
317 | ipc_answer_0(rid, ENOENT); |
317 | ipc_answer_0(rid, ENOENT); |
318 | return; |
318 | return; |
319 | } |
319 | } |
320 | 320 | ||
321 | device_t *dev = hash_table_get_instance(lnk, device_t, link); |
321 | device_t *dev = hash_table_get_instance(lnk, device_t, link); |
322 | 322 | ||
323 | ipc_callid_t callid; |
323 | ipc_callid_t callid; |
324 | if (!ipc_data_read_receive(&callid, NULL)) { |
324 | if (!ipc_data_read_receive(&callid, NULL)) { |
325 | fibril_mutex_unlock(&devices_mutex); |
325 | fibril_mutex_unlock(&devices_mutex); |
326 | ipc_answer_0(callid, EINVAL); |
326 | ipc_answer_0(callid, EINVAL); |
327 | ipc_answer_0(rid, EINVAL); |
327 | ipc_answer_0(rid, EINVAL); |
328 | return; |
328 | return; |
329 | } |
329 | } |
330 | 330 | ||
331 | /* Make a request at the driver */ |
331 | /* Make a request at the driver */ |
332 | ipc_call_t answer; |
332 | ipc_call_t answer; |
333 | aid_t msg = async_send_3(dev->phone, IPC_GET_METHOD(*request), |
333 | aid_t msg = async_send_3(dev->phone, IPC_GET_METHOD(*request), |
334 | IPC_GET_ARG1(*request), IPC_GET_ARG2(*request), |
334 | IPC_GET_ARG1(*request), IPC_GET_ARG2(*request), |
335 | IPC_GET_ARG3(*request), &answer); |
335 | IPC_GET_ARG3(*request), &answer); |
336 | 336 | ||
337 | /* Forward the IPC_M_DATA_READ request to the driver */ |
337 | /* Forward the IPC_M_DATA_READ request to the driver */ |
338 | ipc_forward_fast(callid, dev->phone, 0, 0, 0, IPC_FF_ROUTE_FROM_ME); |
338 | ipc_forward_fast(callid, dev->phone, 0, 0, 0, IPC_FF_ROUTE_FROM_ME); |
339 | fibril_mutex_unlock(&devices_mutex); |
339 | fibril_mutex_unlock(&devices_mutex); |
340 | 340 | ||
341 | /* Wait for reply from the driver. */ |
341 | /* Wait for reply from the driver. */ |
342 | ipcarg_t rc; |
342 | ipcarg_t rc; |
343 | async_wait_for(msg, &rc); |
343 | async_wait_for(msg, &rc); |
344 | size_t bytes = IPC_GET_ARG1(answer); |
344 | size_t bytes = IPC_GET_ARG1(answer); |
345 | 345 | ||
346 | /* Driver reply is the final result of the whole operation */ |
346 | /* Driver reply is the final result of the whole operation */ |
347 | ipc_answer_1(rid, rc, bytes); |
347 | ipc_answer_1(rid, rc, bytes); |
348 | } else { |
348 | } else { |
349 | ipc_callid_t callid; |
349 | ipc_callid_t callid; |
350 | size_t size; |
350 | size_t size; |
351 | if (!ipc_data_read_receive(&callid, &size)) { |
351 | if (!ipc_data_read_receive(&callid, &size)) { |
352 | ipc_answer_0(callid, EINVAL); |
352 | ipc_answer_0(callid, EINVAL); |
353 | ipc_answer_0(rid, EINVAL); |
353 | ipc_answer_0(rid, EINVAL); |
354 | return; |
354 | return; |
355 | } |
355 | } |
356 | 356 | ||
357 | size_t count = devmap_device_get_count(); |
357 | size_t count = devmap_device_get_count(); |
358 | dev_desc_t *desc = malloc(count * sizeof(dev_desc_t)); |
358 | dev_desc_t *desc = malloc(count * sizeof(dev_desc_t)); |
359 | if (desc == NULL) { |
359 | if (desc == NULL) { |
360 | ipc_answer_0(callid, ENOMEM); |
360 | ipc_answer_0(callid, ENOMEM); |
361 | ipc_answer_1(rid, ENOMEM, 0); |
361 | ipc_answer_1(rid, ENOMEM, 0); |
362 | return; |
362 | return; |
363 | } |
363 | } |
364 | 364 | ||
365 | size_t max = devmap_device_get_devices(count, desc); |
365 | size_t max = devmap_device_get_devices(count, desc); |
366 | 366 | ||
367 | if (pos < max) { |
367 | if (pos < max) { |
368 | ipc_data_read_finalize(callid, desc[pos].name, str_size(desc[pos].name) + 1); |
368 | ipc_data_read_finalize(callid, desc[pos].name, str_size(desc[pos].name) + 1); |
369 | } else { |
369 | } else { |
370 | ipc_answer_0(callid, ENOENT); |
370 | ipc_answer_0(callid, ENOENT); |
371 | ipc_answer_1(rid, ENOENT, 0); |
371 | ipc_answer_1(rid, ENOENT, 0); |
372 | return; |
372 | return; |
373 | } |
373 | } |
374 | 374 | ||
375 | free(desc); |
375 | free(desc); |
376 | 376 | ||
377 | ipc_answer_1(rid, EOK, 1); |
377 | ipc_answer_1(rid, EOK, 1); |
378 | } |
378 | } |
379 | } |
379 | } |
380 | 380 | ||
381 | void devfs_write(ipc_callid_t rid, ipc_call_t *request) |
381 | void devfs_write(ipc_callid_t rid, ipc_call_t *request) |
382 | { |
382 | { |
383 | fs_index_t index = (fs_index_t) IPC_GET_ARG2(*request); |
383 | fs_index_t index = (fs_index_t) IPC_GET_ARG2(*request); |
384 | off_t pos = (off_t) IPC_GET_ARG3(*request); |
384 | off_t pos = (off_t) IPC_GET_ARG3(*request); |
385 | 385 | ||
386 | if (index != 0) { |
386 | if (index != 0) { |
387 | unsigned long key[] = { |
387 | unsigned long key[] = { |
388 | [DEVICES_KEY_HANDLE] = (unsigned long) index |
388 | [DEVICES_KEY_HANDLE] = (unsigned long) index |
389 | }; |
389 | }; |
390 | 390 | ||
391 | fibril_mutex_lock(&devices_mutex); |
391 | fibril_mutex_lock(&devices_mutex); |
392 | link_t *lnk = hash_table_find(&devices, key); |
392 | link_t *lnk = hash_table_find(&devices, key); |
393 | if (lnk == NULL) { |
393 | if (lnk == NULL) { |
394 | fibril_mutex_unlock(&devices_mutex); |
394 | fibril_mutex_unlock(&devices_mutex); |
395 | ipc_answer_0(rid, ENOENT); |
395 | ipc_answer_0(rid, ENOENT); |
396 | return; |
396 | return; |
397 | } |
397 | } |
398 | 398 | ||
399 | device_t *dev = hash_table_get_instance(lnk, device_t, link); |
399 | device_t *dev = hash_table_get_instance(lnk, device_t, link); |
400 | 400 | ||
401 | ipc_callid_t callid; |
401 | ipc_callid_t callid; |
402 | if (!ipc_data_write_receive(&callid, NULL)) { |
402 | if (!ipc_data_write_receive(&callid, NULL)) { |
403 | fibril_mutex_unlock(&devices_mutex); |
403 | fibril_mutex_unlock(&devices_mutex); |
404 | ipc_answer_0(callid, EINVAL); |
404 | ipc_answer_0(callid, EINVAL); |
405 | ipc_answer_0(rid, EINVAL); |
405 | ipc_answer_0(rid, EINVAL); |
406 | return; |
406 | return; |
407 | } |
407 | } |
408 | 408 | ||
409 | /* Make a request at the driver */ |
409 | /* Make a request at the driver */ |
410 | ipc_call_t answer; |
410 | ipc_call_t answer; |
411 | aid_t msg = async_send_3(dev->phone, IPC_GET_METHOD(*request), |
411 | aid_t msg = async_send_3(dev->phone, IPC_GET_METHOD(*request), |
412 | IPC_GET_ARG1(*request), IPC_GET_ARG2(*request), |
412 | IPC_GET_ARG1(*request), IPC_GET_ARG2(*request), |
413 | IPC_GET_ARG3(*request), &answer); |
413 | IPC_GET_ARG3(*request), &answer); |
414 | 414 | ||
415 | /* Forward the IPC_M_DATA_WRITE request to the driver */ |
415 | /* Forward the IPC_M_DATA_WRITE request to the driver */ |
416 | ipc_forward_fast(callid, dev->phone, 0, 0, 0, IPC_FF_ROUTE_FROM_ME); |
416 | ipc_forward_fast(callid, dev->phone, 0, 0, 0, IPC_FF_ROUTE_FROM_ME); |
417 | 417 | ||
418 | fibril_mutex_unlock(&devices_mutex); |
418 | fibril_mutex_unlock(&devices_mutex); |
419 | 419 | ||
420 | /* Wait for reply from the driver. */ |
420 | /* Wait for reply from the driver. */ |
421 | ipcarg_t rc; |
421 | ipcarg_t rc; |
422 | async_wait_for(msg, &rc); |
422 | async_wait_for(msg, &rc); |
423 | size_t bytes = IPC_GET_ARG1(answer); |
423 | size_t bytes = IPC_GET_ARG1(answer); |
424 | 424 | ||
425 | /* Driver reply is the final result of the whole operation */ |
425 | /* Driver reply is the final result of the whole operation */ |
426 | ipc_answer_1(rid, rc, bytes); |
426 | ipc_answer_1(rid, rc, bytes); |
427 | } else { |
427 | } else { |
428 | /* Read-only filesystem */ |
428 | /* Read-only filesystem */ |
429 | ipc_answer_0(rid, ENOTSUP); |
429 | ipc_answer_0(rid, ENOTSUP); |
430 | } |
430 | } |
431 | } |
431 | } |
432 | 432 | ||
433 | void devfs_truncate(ipc_callid_t rid, ipc_call_t *request) |
433 | void devfs_truncate(ipc_callid_t rid, ipc_call_t *request) |
434 | { |
434 | { |
435 | ipc_answer_0(rid, ENOTSUP); |
435 | ipc_answer_0(rid, ENOTSUP); |
436 | } |
436 | } |
437 | 437 | ||
438 | void devfs_close(ipc_callid_t rid, ipc_call_t *request) |
438 | void devfs_close(ipc_callid_t rid, ipc_call_t *request) |
439 | { |
439 | { |
440 | fs_index_t index = (fs_index_t) IPC_GET_ARG2(*request); |
440 | fs_index_t index = (fs_index_t) IPC_GET_ARG2(*request); |
441 | 441 | ||
442 | if (index != 0) { |
442 | if (index != 0) { |
443 | unsigned long key[] = { |
443 | unsigned long key[] = { |
444 | [DEVICES_KEY_HANDLE] = (unsigned long) index |
444 | [DEVICES_KEY_HANDLE] = (unsigned long) index |
445 | }; |
445 | }; |
446 | 446 | ||
447 | fibril_mutex_lock(&devices_mutex); |
447 | fibril_mutex_lock(&devices_mutex); |
448 | link_t *lnk = hash_table_find(&devices, key); |
448 | link_t *lnk = hash_table_find(&devices, key); |
449 | if (lnk == NULL) { |
449 | if (lnk == NULL) { |
450 | fibril_mutex_unlock(&devices_mutex); |
450 | fibril_mutex_unlock(&devices_mutex); |
451 | ipc_answer_0(rid, ENOENT); |
451 | ipc_answer_0(rid, ENOENT); |
452 | return; |
452 | return; |
453 | } |
453 | } |
454 | 454 | ||
455 | device_t *dev = hash_table_get_instance(lnk, device_t, link); |
455 | device_t *dev = hash_table_get_instance(lnk, device_t, link); |
456 | dev->refcount--; |
456 | dev->refcount--; |
457 | 457 | ||
458 | if (dev->refcount == 0) { |
458 | if (dev->refcount == 0) { |
459 | ipc_hangup(dev->phone); |
459 | ipc_hangup(dev->phone); |
460 | hash_table_remove(&devices, key, DEVICES_KEYS); |
460 | hash_table_remove(&devices, key, DEVICES_KEYS); |
461 | } |
461 | } |
462 | 462 | ||
463 | fibril_mutex_unlock(&devices_mutex); |
463 | fibril_mutex_unlock(&devices_mutex); |
464 | 464 | ||
465 | ipc_answer_0(rid, EOK); |
465 | ipc_answer_0(rid, EOK); |
466 | } else |
466 | } else |
467 | ipc_answer_0(rid, ENOTSUP); |
467 | ipc_answer_0(rid, ENOTSUP); |
468 | } |
468 | } |
469 | 469 | ||
470 | void devfs_sync(ipc_callid_t rid, ipc_call_t *request) |
470 | void devfs_sync(ipc_callid_t rid, ipc_call_t *request) |
471 | { |
471 | { |
472 | fs_index_t index = (fs_index_t) IPC_GET_ARG2(*request); |
472 | fs_index_t index = (fs_index_t) IPC_GET_ARG2(*request); |
473 | 473 | ||
474 | if (index != 0) { |
474 | if (index != 0) { |
475 | unsigned long key[] = { |
475 | unsigned long key[] = { |
476 | [DEVICES_KEY_HANDLE] = (unsigned long) index |
476 | [DEVICES_KEY_HANDLE] = (unsigned long) index |
477 | }; |
477 | }; |
478 | 478 | ||
479 | fibril_mutex_lock(&devices_mutex); |
479 | fibril_mutex_lock(&devices_mutex); |
480 | link_t *lnk = hash_table_find(&devices, key); |
480 | link_t *lnk = hash_table_find(&devices, key); |
481 | if (lnk == NULL) { |
481 | if (lnk == NULL) { |
482 | fibril_mutex_unlock(&devices_mutex); |
482 | fibril_mutex_unlock(&devices_mutex); |
483 | ipc_answer_0(rid, ENOENT); |
483 | ipc_answer_0(rid, ENOENT); |
484 | return; |
484 | return; |
485 | } |
485 | } |
486 | 486 | ||
487 | device_t *dev = hash_table_get_instance(lnk, device_t, link); |
487 | device_t *dev = hash_table_get_instance(lnk, device_t, link); |
488 | 488 | ||
489 | /* Make a request at the driver */ |
489 | /* Make a request at the driver */ |
490 | ipc_call_t answer; |
490 | ipc_call_t answer; |
491 | aid_t msg = async_send_2(dev->phone, IPC_GET_METHOD(*request), |
491 | aid_t msg = async_send_2(dev->phone, IPC_GET_METHOD(*request), |
492 | IPC_GET_ARG1(*request), IPC_GET_ARG2(*request), &answer); |
492 | IPC_GET_ARG1(*request), IPC_GET_ARG2(*request), &answer); |
493 | 493 | ||
494 | fibril_mutex_unlock(&devices_mutex); |
494 | fibril_mutex_unlock(&devices_mutex); |
495 | 495 | ||
496 | /* Wait for reply from the driver */ |
496 | /* Wait for reply from the driver */ |
497 | ipcarg_t rc; |
497 | ipcarg_t rc; |
498 | async_wait_for(msg, &rc); |
498 | async_wait_for(msg, &rc); |
499 | 499 | ||
500 | /* Driver reply is the final result of the whole operation */ |
500 | /* Driver reply is the final result of the whole operation */ |
501 | ipc_answer_0(rid, rc); |
501 | ipc_answer_0(rid, rc); |
502 | } else |
502 | } else |
503 | ipc_answer_0(rid, ENOTSUP); |
503 | ipc_answer_0(rid, ENOTSUP); |
504 | } |
504 | } |
505 | 505 | ||
506 | void devfs_destroy(ipc_callid_t rid, ipc_call_t *request) |
506 | void devfs_destroy(ipc_callid_t rid, ipc_call_t *request) |
507 | { |
507 | { |
508 | ipc_answer_0(rid, ENOTSUP); |
508 | ipc_answer_0(rid, ENOTSUP); |
509 | } |
509 | } |
510 | 510 | ||
511 | /** |
511 | /** |
512 | * @} |
512 | * @} |
513 | */ |
513 | */ |
514 | 514 |