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1 | /* |
1 | /* |
2 | * Copyright (c) 2008 Jakub Jermar |
2 | * Copyright (c) 2008 Jakub Jermar |
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 libc |
29 | /** @addtogroup libc |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** @file |
32 | /** @file |
33 | */ |
33 | */ |
34 | 34 | ||
35 | #include <vfs/vfs.h> |
35 | #include <vfs/vfs.h> |
36 | #include <vfs/canonify.h> |
36 | #include <vfs/canonify.h> |
37 | #include <stdlib.h> |
37 | #include <stdlib.h> |
38 | #include <unistd.h> |
38 | #include <unistd.h> |
39 | #include <dirent.h> |
39 | #include <dirent.h> |
40 | #include <fcntl.h> |
40 | #include <fcntl.h> |
41 | #include <sys/stat.h> |
41 | #include <sys/stat.h> |
42 | #include <stdio.h> |
42 | #include <stdio.h> |
43 | #include <sys/types.h> |
43 | #include <sys/types.h> |
44 | #include <ipc/ipc.h> |
44 | #include <ipc/ipc.h> |
45 | #include <ipc/services.h> |
45 | #include <ipc/services.h> |
46 | #include <async.h> |
46 | #include <async.h> |
47 | #include <atomic.h> |
47 | #include <atomic.h> |
48 | #include <futex.h> |
48 | #include <futex.h> |
49 | #include <errno.h> |
49 | #include <errno.h> |
50 | #include <string.h> |
50 | #include <string.h> |
51 | #include <ipc/devmap.h> |
51 | #include <ipc/devmap.h> |
52 | #include "../../srv/vfs/vfs.h" |
52 | #include "../../srv/vfs/vfs.h" |
53 | 53 | ||
54 | int vfs_phone = -1; |
54 | int vfs_phone = -1; |
55 | futex_t vfs_phone_futex = FUTEX_INITIALIZER; |
55 | futex_t vfs_phone_futex = FUTEX_INITIALIZER; |
56 | 56 | ||
57 | futex_t cwd_futex = FUTEX_INITIALIZER; |
57 | futex_t cwd_futex = FUTEX_INITIALIZER; |
58 | DIR *cwd_dir = NULL; |
58 | DIR *cwd_dir = NULL; |
59 | char *cwd_path = NULL; |
59 | char *cwd_path = NULL; |
60 | size_t cwd_len = 0; |
60 | size_t cwd_len = 0; |
61 | 61 | ||
62 | static char *absolutize(const char *path, size_t *retlen) |
62 | static char *absolutize(const char *path, size_t *retlen) |
63 | { |
63 | { |
64 | char *ncwd_path; |
64 | char *ncwd_path; |
- | 65 | char *ncwd_path_nc; |
|
65 | 66 | ||
66 | futex_down(&cwd_futex); |
67 | futex_down(&cwd_futex); |
67 | size_t len = strlen(path); |
68 | size_t len = strlen(path); |
68 | if (*path != '/') { |
69 | if (*path != '/') { |
69 | if (!cwd_path) { |
70 | if (!cwd_path) { |
70 | futex_up(&cwd_futex); |
71 | futex_up(&cwd_futex); |
71 | return NULL; |
72 | return NULL; |
72 | } |
73 | } |
73 | ncwd_path = malloc(len + cwd_len + 1); |
74 | ncwd_path_nc = malloc(len + cwd_len + 1); |
74 | if (!ncwd_path) { |
75 | if (!ncwd_path_nc) { |
75 | futex_up(&cwd_futex); |
76 | futex_up(&cwd_futex); |
76 | return NULL; |
77 | return NULL; |
77 | } |
78 | } |
78 | strcpy(ncwd_path, cwd_path); |
79 | strcpy(ncwd_path_nc, cwd_path); |
79 | ncwd_path[cwd_len] = '/'; |
80 | ncwd_path_nc[cwd_len] = '/'; |
80 | ncwd_path[cwd_len + 1] = '\0'; |
81 | ncwd_path_nc[cwd_len + 1] = '\0'; |
81 | } else { |
82 | } else { |
82 | ncwd_path = malloc(len + 1); |
83 | ncwd_path_nc = malloc(len + 1); |
83 | if (!ncwd_path) { |
84 | if (!ncwd_path_nc) { |
84 | futex_up(&cwd_futex); |
85 | futex_up(&cwd_futex); |
85 | return NULL; |
86 | return NULL; |
86 | } |
87 | } |
87 | ncwd_path[0] = '\0'; |
88 | ncwd_path_nc[0] = '\0'; |
88 | } |
89 | } |
89 | strcat(ncwd_path, path); |
90 | strcat(ncwd_path_nc, path); |
90 | if (!canonify(ncwd_path, retlen)) { |
91 | ncwd_path = canonify(ncwd_path_nc, retlen); |
- | 92 | if (!ncwd_path) { |
|
- | 93 | futex_up(&cwd_futex); |
|
- | 94 | free(ncwd_path_nc); |
|
- | 95 | return NULL; |
|
- | 96 | } |
|
- | 97 | /* |
|
- | 98 | * We need to clone ncwd_path because canonify() works in-place and thus |
|
- | 99 | * the address in ncwd_path need not be the same as ncwd_path_nc, even |
|
- | 100 | * though they both point into the same dynamically allocated buffer. |
|
- | 101 | */ |
|
- | 102 | ncwd_path = strdup(ncwd_path); |
|
- | 103 | free(ncwd_path_nc); |
|
- | 104 | if (!ncwd_path) { |
|
91 | futex_up(&cwd_futex); |
105 | futex_up(&cwd_futex); |
92 | free(ncwd_path); |
- | |
93 | return NULL; |
106 | return NULL; |
94 | } |
107 | } |
95 | futex_up(&cwd_futex); |
108 | futex_up(&cwd_futex); |
96 | return ncwd_path; |
109 | return ncwd_path; |
97 | } |
110 | } |
98 | 111 | ||
99 | static int vfs_connect(void) |
112 | static int vfs_connect(void) |
100 | { |
113 | { |
101 | if (vfs_phone < 0) |
114 | if (vfs_phone < 0) |
102 | vfs_phone = ipc_connect_me_to(PHONE_NS, SERVICE_VFS, 0, 0); |
115 | vfs_phone = ipc_connect_me_to(PHONE_NS, SERVICE_VFS, 0, 0); |
103 | return vfs_phone; |
116 | return vfs_phone; |
104 | } |
117 | } |
105 | 118 | ||
106 | static int device_get_handle(char *name, dev_handle_t *handle) |
119 | static int device_get_handle(char *name, dev_handle_t *handle) |
107 | { |
120 | { |
108 | int phone = ipc_connect_me_to(PHONE_NS, SERVICE_DEVMAP, DEVMAP_CLIENT, |
121 | int phone = ipc_connect_me_to(PHONE_NS, SERVICE_DEVMAP, DEVMAP_CLIENT, |
109 | 0); |
122 | 0); |
110 | if (phone < 0) |
123 | if (phone < 0) |
111 | return phone; |
124 | return phone; |
112 | 125 | ||
113 | ipc_call_t answer; |
126 | ipc_call_t answer; |
114 | aid_t req = async_send_2(phone, DEVMAP_DEVICE_GET_HANDLE, 0, 0, |
127 | aid_t req = async_send_2(phone, DEVMAP_DEVICE_GET_HANDLE, 0, 0, |
115 | &answer); |
128 | &answer); |
116 | 129 | ||
117 | ipcarg_t retval = ipc_data_write_start(phone, name, strlen(name) + 1); |
130 | ipcarg_t retval = ipc_data_write_start(phone, name, strlen(name) + 1); |
118 | 131 | ||
119 | if (retval != EOK) { |
132 | if (retval != EOK) { |
120 | async_wait_for(req, NULL); |
133 | async_wait_for(req, NULL); |
121 | ipc_hangup(phone); |
134 | ipc_hangup(phone); |
122 | return retval; |
135 | return retval; |
123 | } |
136 | } |
124 | 137 | ||
125 | async_wait_for(req, &retval); |
138 | async_wait_for(req, &retval); |
126 | 139 | ||
127 | if (handle != NULL) |
140 | if (handle != NULL) |
128 | *handle = -1; |
141 | *handle = -1; |
129 | 142 | ||
130 | if (retval == EOK) { |
143 | if (retval == EOK) { |
131 | if (handle != NULL) |
144 | if (handle != NULL) |
132 | *handle = (dev_handle_t) IPC_GET_ARG1(answer); |
145 | *handle = (dev_handle_t) IPC_GET_ARG1(answer); |
133 | } |
146 | } |
134 | 147 | ||
135 | ipc_hangup(phone); |
148 | ipc_hangup(phone); |
136 | return retval; |
149 | return retval; |
137 | } |
150 | } |
138 | 151 | ||
139 | int mount(const char *fs_name, const char *mp, const char *dev) |
152 | int mount(const char *fs_name, const char *mp, const char *dev) |
140 | { |
153 | { |
141 | int res; |
154 | int res; |
142 | ipcarg_t rc; |
155 | ipcarg_t rc; |
143 | aid_t req; |
156 | aid_t req; |
144 | dev_handle_t dev_handle; |
157 | dev_handle_t dev_handle; |
145 | 158 | ||
146 | res = device_get_handle(dev, &dev_handle); |
159 | res = device_get_handle(dev, &dev_handle); |
147 | if (res != EOK) |
160 | if (res != EOK) |
148 | return res; |
161 | return res; |
149 | 162 | ||
150 | size_t mpa_len; |
163 | size_t mpa_len; |
151 | char *mpa = absolutize(mp, &mpa_len); |
164 | char *mpa = absolutize(mp, &mpa_len); |
152 | if (!mpa) |
165 | if (!mpa) |
153 | return ENOMEM; |
166 | return ENOMEM; |
154 | 167 | ||
155 | futex_down(&vfs_phone_futex); |
168 | futex_down(&vfs_phone_futex); |
156 | async_serialize_start(); |
169 | async_serialize_start(); |
157 | if (vfs_phone < 0) { |
170 | if (vfs_phone < 0) { |
158 | res = vfs_connect(); |
171 | res = vfs_connect(); |
159 | if (res < 0) { |
172 | if (res < 0) { |
160 | async_serialize_end(); |
173 | async_serialize_end(); |
161 | futex_up(&vfs_phone_futex); |
174 | futex_up(&vfs_phone_futex); |
162 | free(mpa); |
175 | free(mpa); |
163 | return res; |
176 | return res; |
164 | } |
177 | } |
165 | } |
178 | } |
166 | req = async_send_1(vfs_phone, VFS_MOUNT, dev_handle, NULL); |
179 | req = async_send_1(vfs_phone, VFS_MOUNT, dev_handle, NULL); |
167 | rc = ipc_data_write_start(vfs_phone, (void *)fs_name, strlen(fs_name)); |
180 | rc = ipc_data_write_start(vfs_phone, (void *)fs_name, strlen(fs_name)); |
168 | if (rc != EOK) { |
181 | if (rc != EOK) { |
169 | async_wait_for(req, NULL); |
182 | async_wait_for(req, NULL); |
170 | async_serialize_end(); |
183 | async_serialize_end(); |
171 | futex_up(&vfs_phone_futex); |
184 | futex_up(&vfs_phone_futex); |
172 | free(mpa); |
185 | free(mpa); |
173 | return (int) rc; |
186 | return (int) rc; |
174 | } |
187 | } |
175 | /* Ask VFS whether it likes fs_name. */ |
188 | /* Ask VFS whether it likes fs_name. */ |
176 | rc = async_req_0_0(vfs_phone, IPC_M_PING); |
189 | rc = async_req_0_0(vfs_phone, IPC_M_PING); |
177 | if (rc != EOK) { |
190 | if (rc != EOK) { |
178 | async_wait_for(req, NULL); |
191 | async_wait_for(req, NULL); |
179 | async_serialize_end(); |
192 | async_serialize_end(); |
180 | futex_up(&vfs_phone_futex); |
193 | futex_up(&vfs_phone_futex); |
181 | free(mpa); |
194 | free(mpa); |
182 | return (int) rc; |
195 | return (int) rc; |
183 | } |
196 | } |
184 | rc = ipc_data_write_start(vfs_phone, (void *)mpa, mpa_len); |
197 | rc = ipc_data_write_start(vfs_phone, (void *)mpa, mpa_len); |
185 | if (rc != EOK) { |
198 | if (rc != EOK) { |
186 | async_wait_for(req, NULL); |
199 | async_wait_for(req, NULL); |
187 | async_serialize_end(); |
200 | async_serialize_end(); |
188 | futex_up(&vfs_phone_futex); |
201 | futex_up(&vfs_phone_futex); |
189 | free(mpa); |
202 | free(mpa); |
190 | return (int) rc; |
203 | return (int) rc; |
191 | } |
204 | } |
192 | async_wait_for(req, &rc); |
205 | async_wait_for(req, &rc); |
193 | async_serialize_end(); |
206 | async_serialize_end(); |
194 | futex_up(&vfs_phone_futex); |
207 | futex_up(&vfs_phone_futex); |
195 | free(mpa); |
208 | free(mpa); |
196 | return (int) rc; |
209 | return (int) rc; |
197 | } |
210 | } |
198 | 211 | ||
199 | static int _open(const char *path, int lflag, int oflag, ...) |
212 | static int _open(const char *path, int lflag, int oflag, ...) |
200 | { |
213 | { |
201 | int res; |
214 | int res; |
202 | ipcarg_t rc; |
215 | ipcarg_t rc; |
203 | ipc_call_t answer; |
216 | ipc_call_t answer; |
204 | aid_t req; |
217 | aid_t req; |
205 | 218 | ||
206 | size_t pa_len; |
219 | size_t pa_len; |
207 | char *pa = absolutize(path, &pa_len); |
220 | char *pa = absolutize(path, &pa_len); |
208 | if (!pa) |
221 | if (!pa) |
209 | return ENOMEM; |
222 | return ENOMEM; |
210 | 223 | ||
211 | futex_down(&vfs_phone_futex); |
224 | futex_down(&vfs_phone_futex); |
212 | async_serialize_start(); |
225 | async_serialize_start(); |
213 | if (vfs_phone < 0) { |
226 | if (vfs_phone < 0) { |
214 | res = vfs_connect(); |
227 | res = vfs_connect(); |
215 | if (res < 0) { |
228 | if (res < 0) { |
216 | async_serialize_end(); |
229 | async_serialize_end(); |
217 | futex_up(&vfs_phone_futex); |
230 | futex_up(&vfs_phone_futex); |
218 | free(pa); |
231 | free(pa); |
219 | return res; |
232 | return res; |
220 | } |
233 | } |
221 | } |
234 | } |
222 | req = async_send_3(vfs_phone, VFS_OPEN, lflag, oflag, 0, &answer); |
235 | req = async_send_3(vfs_phone, VFS_OPEN, lflag, oflag, 0, &answer); |
223 | rc = ipc_data_write_start(vfs_phone, pa, pa_len); |
236 | rc = ipc_data_write_start(vfs_phone, pa, pa_len); |
224 | if (rc != EOK) { |
237 | if (rc != EOK) { |
225 | async_wait_for(req, NULL); |
238 | async_wait_for(req, NULL); |
226 | async_serialize_end(); |
239 | async_serialize_end(); |
227 | futex_up(&vfs_phone_futex); |
240 | futex_up(&vfs_phone_futex); |
228 | free(pa); |
241 | free(pa); |
229 | return (int) rc; |
242 | return (int) rc; |
230 | } |
243 | } |
231 | async_wait_for(req, &rc); |
244 | async_wait_for(req, &rc); |
232 | async_serialize_end(); |
245 | async_serialize_end(); |
233 | futex_up(&vfs_phone_futex); |
246 | futex_up(&vfs_phone_futex); |
234 | free(pa); |
247 | free(pa); |
235 | 248 | ||
236 | if (rc != EOK) |
249 | if (rc != EOK) |
237 | return (int) rc; |
250 | return (int) rc; |
238 | return (int) IPC_GET_ARG1(answer); |
251 | return (int) IPC_GET_ARG1(answer); |
239 | } |
252 | } |
240 | 253 | ||
241 | int open(const char *path, int oflag, ...) |
254 | int open(const char *path, int oflag, ...) |
242 | { |
255 | { |
243 | return _open(path, L_FILE, oflag); |
256 | return _open(path, L_FILE, oflag); |
244 | } |
257 | } |
245 | 258 | ||
246 | int close(int fildes) |
259 | int close(int fildes) |
247 | { |
260 | { |
248 | int res; |
261 | int res; |
249 | ipcarg_t rc; |
262 | ipcarg_t rc; |
250 | 263 | ||
251 | futex_down(&vfs_phone_futex); |
264 | futex_down(&vfs_phone_futex); |
252 | async_serialize_start(); |
265 | async_serialize_start(); |
253 | if (vfs_phone < 0) { |
266 | if (vfs_phone < 0) { |
254 | res = vfs_connect(); |
267 | res = vfs_connect(); |
255 | if (res < 0) { |
268 | if (res < 0) { |
256 | async_serialize_end(); |
269 | async_serialize_end(); |
257 | futex_up(&vfs_phone_futex); |
270 | futex_up(&vfs_phone_futex); |
258 | return res; |
271 | return res; |
259 | } |
272 | } |
260 | } |
273 | } |
261 | 274 | ||
262 | rc = async_req_1_0(vfs_phone, VFS_CLOSE, fildes); |
275 | rc = async_req_1_0(vfs_phone, VFS_CLOSE, fildes); |
263 | 276 | ||
264 | async_serialize_end(); |
277 | async_serialize_end(); |
265 | futex_up(&vfs_phone_futex); |
278 | futex_up(&vfs_phone_futex); |
266 | 279 | ||
267 | return (int)rc; |
280 | return (int)rc; |
268 | } |
281 | } |
269 | 282 | ||
270 | ssize_t read(int fildes, void *buf, size_t nbyte) |
283 | ssize_t read(int fildes, void *buf, size_t nbyte) |
271 | { |
284 | { |
272 | int res; |
285 | int res; |
273 | ipcarg_t rc; |
286 | ipcarg_t rc; |
274 | ipc_call_t answer; |
287 | ipc_call_t answer; |
275 | aid_t req; |
288 | aid_t req; |
276 | 289 | ||
277 | futex_down(&vfs_phone_futex); |
290 | futex_down(&vfs_phone_futex); |
278 | async_serialize_start(); |
291 | async_serialize_start(); |
279 | if (vfs_phone < 0) { |
292 | if (vfs_phone < 0) { |
280 | res = vfs_connect(); |
293 | res = vfs_connect(); |
281 | if (res < 0) { |
294 | if (res < 0) { |
282 | async_serialize_end(); |
295 | async_serialize_end(); |
283 | futex_up(&vfs_phone_futex); |
296 | futex_up(&vfs_phone_futex); |
284 | return res; |
297 | return res; |
285 | } |
298 | } |
286 | } |
299 | } |
287 | req = async_send_1(vfs_phone, VFS_READ, fildes, &answer); |
300 | req = async_send_1(vfs_phone, VFS_READ, fildes, &answer); |
288 | rc = ipc_data_read_start(vfs_phone, (void *)buf, nbyte); |
301 | rc = ipc_data_read_start(vfs_phone, (void *)buf, nbyte); |
289 | if (rc != EOK) { |
302 | if (rc != EOK) { |
290 | async_wait_for(req, NULL); |
303 | async_wait_for(req, NULL); |
291 | async_serialize_end(); |
304 | async_serialize_end(); |
292 | futex_up(&vfs_phone_futex); |
305 | futex_up(&vfs_phone_futex); |
293 | return (ssize_t) rc; |
306 | return (ssize_t) rc; |
294 | } |
307 | } |
295 | async_wait_for(req, &rc); |
308 | async_wait_for(req, &rc); |
296 | async_serialize_end(); |
309 | async_serialize_end(); |
297 | futex_up(&vfs_phone_futex); |
310 | futex_up(&vfs_phone_futex); |
298 | if (rc == EOK) |
311 | if (rc == EOK) |
299 | return (ssize_t) IPC_GET_ARG1(answer); |
312 | return (ssize_t) IPC_GET_ARG1(answer); |
300 | else |
313 | else |
301 | return -1; |
314 | return -1; |
302 | } |
315 | } |
303 | 316 | ||
304 | ssize_t write(int fildes, const void *buf, size_t nbyte) |
317 | ssize_t write(int fildes, const void *buf, size_t nbyte) |
305 | { |
318 | { |
306 | int res; |
319 | int res; |
307 | ipcarg_t rc; |
320 | ipcarg_t rc; |
308 | ipc_call_t answer; |
321 | ipc_call_t answer; |
309 | aid_t req; |
322 | aid_t req; |
310 | 323 | ||
311 | futex_down(&vfs_phone_futex); |
324 | futex_down(&vfs_phone_futex); |
312 | async_serialize_start(); |
325 | async_serialize_start(); |
313 | if (vfs_phone < 0) { |
326 | if (vfs_phone < 0) { |
314 | res = vfs_connect(); |
327 | res = vfs_connect(); |
315 | if (res < 0) { |
328 | if (res < 0) { |
316 | async_serialize_end(); |
329 | async_serialize_end(); |
317 | futex_up(&vfs_phone_futex); |
330 | futex_up(&vfs_phone_futex); |
318 | return res; |
331 | return res; |
319 | } |
332 | } |
320 | } |
333 | } |
321 | req = async_send_1(vfs_phone, VFS_WRITE, fildes, &answer); |
334 | req = async_send_1(vfs_phone, VFS_WRITE, fildes, &answer); |
322 | rc = ipc_data_write_start(vfs_phone, (void *)buf, nbyte); |
335 | rc = ipc_data_write_start(vfs_phone, (void *)buf, nbyte); |
323 | if (rc != EOK) { |
336 | if (rc != EOK) { |
324 | async_wait_for(req, NULL); |
337 | async_wait_for(req, NULL); |
325 | async_serialize_end(); |
338 | async_serialize_end(); |
326 | futex_up(&vfs_phone_futex); |
339 | futex_up(&vfs_phone_futex); |
327 | return (ssize_t) rc; |
340 | return (ssize_t) rc; |
328 | } |
341 | } |
329 | async_wait_for(req, &rc); |
342 | async_wait_for(req, &rc); |
330 | async_serialize_end(); |
343 | async_serialize_end(); |
331 | futex_up(&vfs_phone_futex); |
344 | futex_up(&vfs_phone_futex); |
332 | if (rc == EOK) |
345 | if (rc == EOK) |
333 | return (ssize_t) IPC_GET_ARG1(answer); |
346 | return (ssize_t) IPC_GET_ARG1(answer); |
334 | else |
347 | else |
335 | return -1; |
348 | return -1; |
336 | } |
349 | } |
337 | 350 | ||
338 | off_t lseek(int fildes, off_t offset, int whence) |
351 | off_t lseek(int fildes, off_t offset, int whence) |
339 | { |
352 | { |
340 | int res; |
353 | int res; |
341 | ipcarg_t rc; |
354 | ipcarg_t rc; |
342 | 355 | ||
343 | futex_down(&vfs_phone_futex); |
356 | futex_down(&vfs_phone_futex); |
344 | async_serialize_start(); |
357 | async_serialize_start(); |
345 | if (vfs_phone < 0) { |
358 | if (vfs_phone < 0) { |
346 | res = vfs_connect(); |
359 | res = vfs_connect(); |
347 | if (res < 0) { |
360 | if (res < 0) { |
348 | async_serialize_end(); |
361 | async_serialize_end(); |
349 | futex_up(&vfs_phone_futex); |
362 | futex_up(&vfs_phone_futex); |
350 | return res; |
363 | return res; |
351 | } |
364 | } |
352 | } |
365 | } |
353 | 366 | ||
354 | off_t newoffs; |
367 | off_t newoffs; |
355 | rc = async_req_3_1(vfs_phone, VFS_SEEK, fildes, offset, whence, |
368 | rc = async_req_3_1(vfs_phone, VFS_SEEK, fildes, offset, whence, |
356 | (ipcarg_t)&newoffs); |
369 | (ipcarg_t)&newoffs); |
357 | 370 | ||
358 | async_serialize_end(); |
371 | async_serialize_end(); |
359 | futex_up(&vfs_phone_futex); |
372 | futex_up(&vfs_phone_futex); |
360 | 373 | ||
361 | if (rc != EOK) |
374 | if (rc != EOK) |
362 | return (off_t) -1; |
375 | return (off_t) -1; |
363 | 376 | ||
364 | return newoffs; |
377 | return newoffs; |
365 | } |
378 | } |
366 | 379 | ||
367 | int ftruncate(int fildes, off_t length) |
380 | int ftruncate(int fildes, off_t length) |
368 | { |
381 | { |
369 | int res; |
382 | int res; |
370 | ipcarg_t rc; |
383 | ipcarg_t rc; |
371 | 384 | ||
372 | futex_down(&vfs_phone_futex); |
385 | futex_down(&vfs_phone_futex); |
373 | async_serialize_start(); |
386 | async_serialize_start(); |
374 | if (vfs_phone < 0) { |
387 | if (vfs_phone < 0) { |
375 | res = vfs_connect(); |
388 | res = vfs_connect(); |
376 | if (res < 0) { |
389 | if (res < 0) { |
377 | async_serialize_end(); |
390 | async_serialize_end(); |
378 | futex_up(&vfs_phone_futex); |
391 | futex_up(&vfs_phone_futex); |
379 | return res; |
392 | return res; |
380 | } |
393 | } |
381 | } |
394 | } |
382 | rc = async_req_2_0(vfs_phone, VFS_TRUNCATE, fildes, length); |
395 | rc = async_req_2_0(vfs_phone, VFS_TRUNCATE, fildes, length); |
383 | async_serialize_end(); |
396 | async_serialize_end(); |
384 | futex_up(&vfs_phone_futex); |
397 | futex_up(&vfs_phone_futex); |
385 | return (int) rc; |
398 | return (int) rc; |
386 | } |
399 | } |
387 | 400 | ||
388 | DIR *opendir(const char *dirname) |
401 | DIR *opendir(const char *dirname) |
389 | { |
402 | { |
390 | DIR *dirp = malloc(sizeof(DIR)); |
403 | DIR *dirp = malloc(sizeof(DIR)); |
391 | if (!dirp) |
404 | if (!dirp) |
392 | return NULL; |
405 | return NULL; |
393 | dirp->fd = _open(dirname, L_DIRECTORY, 0); |
406 | dirp->fd = _open(dirname, L_DIRECTORY, 0); |
394 | if (dirp->fd < 0) { |
407 | if (dirp->fd < 0) { |
395 | free(dirp); |
408 | free(dirp); |
396 | return NULL; |
409 | return NULL; |
397 | } |
410 | } |
398 | return dirp; |
411 | return dirp; |
399 | } |
412 | } |
400 | 413 | ||
401 | struct dirent *readdir(DIR *dirp) |
414 | struct dirent *readdir(DIR *dirp) |
402 | { |
415 | { |
403 | ssize_t len = read(dirp->fd, &dirp->res.d_name[0], NAME_MAX + 1); |
416 | ssize_t len = read(dirp->fd, &dirp->res.d_name[0], NAME_MAX + 1); |
404 | if (len <= 0) |
417 | if (len <= 0) |
405 | return NULL; |
418 | return NULL; |
406 | return &dirp->res; |
419 | return &dirp->res; |
407 | } |
420 | } |
408 | 421 | ||
409 | void rewinddir(DIR *dirp) |
422 | void rewinddir(DIR *dirp) |
410 | { |
423 | { |
411 | (void) lseek(dirp->fd, 0, SEEK_SET); |
424 | (void) lseek(dirp->fd, 0, SEEK_SET); |
412 | } |
425 | } |
413 | 426 | ||
414 | int closedir(DIR *dirp) |
427 | int closedir(DIR *dirp) |
415 | { |
428 | { |
416 | (void) close(dirp->fd); |
429 | (void) close(dirp->fd); |
417 | free(dirp); |
430 | free(dirp); |
418 | return 0; |
431 | return 0; |
419 | } |
432 | } |
420 | 433 | ||
421 | int mkdir(const char *path, mode_t mode) |
434 | int mkdir(const char *path, mode_t mode) |
422 | { |
435 | { |
423 | int res; |
436 | int res; |
424 | ipcarg_t rc; |
437 | ipcarg_t rc; |
425 | aid_t req; |
438 | aid_t req; |
426 | 439 | ||
427 | size_t pa_len; |
440 | size_t pa_len; |
428 | char *pa = absolutize(path, &pa_len); |
441 | char *pa = absolutize(path, &pa_len); |
429 | if (!pa) |
442 | if (!pa) |
430 | return ENOMEM; |
443 | return ENOMEM; |
431 | 444 | ||
432 | futex_down(&vfs_phone_futex); |
445 | futex_down(&vfs_phone_futex); |
433 | async_serialize_start(); |
446 | async_serialize_start(); |
434 | if (vfs_phone < 0) { |
447 | if (vfs_phone < 0) { |
435 | res = vfs_connect(); |
448 | res = vfs_connect(); |
436 | if (res < 0) { |
449 | if (res < 0) { |
437 | async_serialize_end(); |
450 | async_serialize_end(); |
438 | futex_up(&vfs_phone_futex); |
451 | futex_up(&vfs_phone_futex); |
439 | free(pa); |
452 | free(pa); |
440 | return res; |
453 | return res; |
441 | } |
454 | } |
442 | } |
455 | } |
443 | req = async_send_1(vfs_phone, VFS_MKDIR, mode, NULL); |
456 | req = async_send_1(vfs_phone, VFS_MKDIR, mode, NULL); |
444 | rc = ipc_data_write_start(vfs_phone, pa, pa_len); |
457 | rc = ipc_data_write_start(vfs_phone, pa, pa_len); |
445 | if (rc != EOK) { |
458 | if (rc != EOK) { |
446 | async_wait_for(req, NULL); |
459 | async_wait_for(req, NULL); |
447 | async_serialize_end(); |
460 | async_serialize_end(); |
448 | futex_up(&vfs_phone_futex); |
461 | futex_up(&vfs_phone_futex); |
449 | free(pa); |
462 | free(pa); |
450 | return (int) rc; |
463 | return (int) rc; |
451 | } |
464 | } |
452 | async_wait_for(req, &rc); |
465 | async_wait_for(req, &rc); |
453 | async_serialize_end(); |
466 | async_serialize_end(); |
454 | futex_up(&vfs_phone_futex); |
467 | futex_up(&vfs_phone_futex); |
455 | free(pa); |
468 | free(pa); |
456 | return rc; |
469 | return rc; |
457 | } |
470 | } |
458 | 471 | ||
459 | static int _unlink(const char *path, int lflag) |
472 | static int _unlink(const char *path, int lflag) |
460 | { |
473 | { |
461 | int res; |
474 | int res; |
462 | ipcarg_t rc; |
475 | ipcarg_t rc; |
463 | aid_t req; |
476 | aid_t req; |
464 | 477 | ||
465 | size_t pa_len; |
478 | size_t pa_len; |
466 | char *pa = absolutize(path, &pa_len); |
479 | char *pa = absolutize(path, &pa_len); |
467 | if (!pa) |
480 | if (!pa) |
468 | return ENOMEM; |
481 | return ENOMEM; |
469 | 482 | ||
470 | futex_down(&vfs_phone_futex); |
483 | futex_down(&vfs_phone_futex); |
471 | async_serialize_start(); |
484 | async_serialize_start(); |
472 | if (vfs_phone < 0) { |
485 | if (vfs_phone < 0) { |
473 | res = vfs_connect(); |
486 | res = vfs_connect(); |
474 | if (res < 0) { |
487 | if (res < 0) { |
475 | async_serialize_end(); |
488 | async_serialize_end(); |
476 | futex_up(&vfs_phone_futex); |
489 | futex_up(&vfs_phone_futex); |
477 | free(pa); |
490 | free(pa); |
478 | return res; |
491 | return res; |
479 | } |
492 | } |
480 | } |
493 | } |
481 | req = async_send_0(vfs_phone, VFS_UNLINK, NULL); |
494 | req = async_send_0(vfs_phone, VFS_UNLINK, NULL); |
482 | rc = ipc_data_write_start(vfs_phone, pa, pa_len); |
495 | rc = ipc_data_write_start(vfs_phone, pa, pa_len); |
483 | if (rc != EOK) { |
496 | if (rc != EOK) { |
484 | async_wait_for(req, NULL); |
497 | async_wait_for(req, NULL); |
485 | async_serialize_end(); |
498 | async_serialize_end(); |
486 | futex_up(&vfs_phone_futex); |
499 | futex_up(&vfs_phone_futex); |
487 | free(pa); |
500 | free(pa); |
488 | return (int) rc; |
501 | return (int) rc; |
489 | } |
502 | } |
490 | async_wait_for(req, &rc); |
503 | async_wait_for(req, &rc); |
491 | async_serialize_end(); |
504 | async_serialize_end(); |
492 | futex_up(&vfs_phone_futex); |
505 | futex_up(&vfs_phone_futex); |
493 | free(pa); |
506 | free(pa); |
494 | return rc; |
507 | return rc; |
495 | } |
508 | } |
496 | 509 | ||
497 | int unlink(const char *path) |
510 | int unlink(const char *path) |
498 | { |
511 | { |
499 | return _unlink(path, L_NONE); |
512 | return _unlink(path, L_NONE); |
500 | } |
513 | } |
501 | 514 | ||
502 | int rmdir(const char *path) |
515 | int rmdir(const char *path) |
503 | { |
516 | { |
504 | return _unlink(path, L_DIRECTORY); |
517 | return _unlink(path, L_DIRECTORY); |
505 | } |
518 | } |
506 | 519 | ||
507 | int rename(const char *old, const char *new) |
520 | int rename(const char *old, const char *new) |
508 | { |
521 | { |
509 | int res; |
522 | int res; |
510 | ipcarg_t rc; |
523 | ipcarg_t rc; |
511 | aid_t req; |
524 | aid_t req; |
512 | 525 | ||
513 | size_t olda_len; |
526 | size_t olda_len; |
514 | char *olda = absolutize(old, &olda_len); |
527 | char *olda = absolutize(old, &olda_len); |
515 | if (!olda) |
528 | if (!olda) |
516 | return ENOMEM; |
529 | return ENOMEM; |
517 | 530 | ||
518 | size_t newa_len; |
531 | size_t newa_len; |
519 | char *newa = absolutize(new, &newa_len); |
532 | char *newa = absolutize(new, &newa_len); |
520 | if (!newa) { |
533 | if (!newa) { |
521 | free(olda); |
534 | free(olda); |
522 | return ENOMEM; |
535 | return ENOMEM; |
523 | } |
536 | } |
524 | 537 | ||
525 | futex_down(&vfs_phone_futex); |
538 | futex_down(&vfs_phone_futex); |
526 | async_serialize_start(); |
539 | async_serialize_start(); |
527 | if (vfs_phone < 0) { |
540 | if (vfs_phone < 0) { |
528 | res = vfs_connect(); |
541 | res = vfs_connect(); |
529 | if (res < 0) { |
542 | if (res < 0) { |
530 | async_serialize_end(); |
543 | async_serialize_end(); |
531 | futex_up(&vfs_phone_futex); |
544 | futex_up(&vfs_phone_futex); |
532 | free(olda); |
545 | free(olda); |
533 | free(newa); |
546 | free(newa); |
534 | return res; |
547 | return res; |
535 | } |
548 | } |
536 | } |
549 | } |
537 | req = async_send_0(vfs_phone, VFS_RENAME, NULL); |
550 | req = async_send_0(vfs_phone, VFS_RENAME, NULL); |
538 | rc = ipc_data_write_start(vfs_phone, olda, olda_len); |
551 | rc = ipc_data_write_start(vfs_phone, olda, olda_len); |
539 | if (rc != EOK) { |
552 | if (rc != EOK) { |
540 | async_wait_for(req, NULL); |
553 | async_wait_for(req, NULL); |
541 | async_serialize_end(); |
554 | async_serialize_end(); |
542 | futex_up(&vfs_phone_futex); |
555 | futex_up(&vfs_phone_futex); |
543 | free(olda); |
556 | free(olda); |
544 | free(newa); |
557 | free(newa); |
545 | return (int) rc; |
558 | return (int) rc; |
546 | } |
559 | } |
547 | rc = ipc_data_write_start(vfs_phone, newa, newa_len); |
560 | rc = ipc_data_write_start(vfs_phone, newa, newa_len); |
548 | if (rc != EOK) { |
561 | if (rc != EOK) { |
549 | async_wait_for(req, NULL); |
562 | async_wait_for(req, NULL); |
550 | async_serialize_end(); |
563 | async_serialize_end(); |
551 | futex_up(&vfs_phone_futex); |
564 | futex_up(&vfs_phone_futex); |
552 | free(olda); |
565 | free(olda); |
553 | free(newa); |
566 | free(newa); |
554 | return (int) rc; |
567 | return (int) rc; |
555 | } |
568 | } |
556 | async_wait_for(req, &rc); |
569 | async_wait_for(req, &rc); |
557 | async_serialize_end(); |
570 | async_serialize_end(); |
558 | futex_up(&vfs_phone_futex); |
571 | futex_up(&vfs_phone_futex); |
559 | free(olda); |
572 | free(olda); |
560 | free(newa); |
573 | free(newa); |
561 | return rc; |
574 | return rc; |
562 | } |
575 | } |
563 | 576 | ||
564 | int chdir(const char *path) |
577 | int chdir(const char *path) |
565 | { |
578 | { |
566 | size_t pa_len; |
579 | size_t pa_len; |
567 | char *pa = absolutize(path, &pa_len); |
580 | char *pa = absolutize(path, &pa_len); |
568 | if (!pa) |
581 | if (!pa) |
569 | return ENOMEM; |
582 | return ENOMEM; |
570 | 583 | ||
571 | DIR *d = opendir(pa); |
584 | DIR *d = opendir(pa); |
572 | if (!d) { |
585 | if (!d) { |
573 | free(pa); |
586 | free(pa); |
574 | return ENOENT; |
587 | return ENOENT; |
575 | } |
588 | } |
576 | 589 | ||
577 | futex_down(&cwd_futex); |
590 | futex_down(&cwd_futex); |
578 | if (cwd_dir) { |
591 | if (cwd_dir) { |
579 | closedir(cwd_dir); |
592 | closedir(cwd_dir); |
580 | cwd_dir = NULL; |
593 | cwd_dir = NULL; |
581 | free(cwd_path); |
594 | free(cwd_path); |
582 | cwd_path = NULL; |
595 | cwd_path = NULL; |
583 | cwd_len = 0; |
596 | cwd_len = 0; |
584 | } |
597 | } |
585 | cwd_dir = d; |
598 | cwd_dir = d; |
586 | cwd_path = pa; |
599 | cwd_path = pa; |
587 | cwd_len = pa_len; |
600 | cwd_len = pa_len; |
588 | futex_up(&cwd_futex); |
601 | futex_up(&cwd_futex); |
589 | } |
602 | } |
590 | 603 | ||
591 | char *getcwd(char *buf, size_t size) |
604 | char *getcwd(char *buf, size_t size) |
592 | { |
605 | { |
593 | if (!size) |
606 | if (!size) |
594 | return NULL; |
607 | return NULL; |
595 | futex_down(&cwd_futex); |
608 | futex_down(&cwd_futex); |
596 | if (size < cwd_len + 1) { |
609 | if (size < cwd_len + 1) { |
597 | futex_up(&cwd_futex); |
610 | futex_up(&cwd_futex); |
598 | return NULL; |
611 | return NULL; |
599 | } |
612 | } |
600 | strcpy(buf, cwd_path); |
613 | strcpy(buf, cwd_path); |
601 | futex_up(&cwd_futex); |
614 | futex_up(&cwd_futex); |
602 | return buf; |
615 | return buf; |
603 | } |
616 | } |
604 | 617 | ||
605 | /** @} |
618 | /** @} |
606 | */ |
619 | */ |
607 | 620 |