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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 <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_size = 0; |
60 | size_t cwd_size = 0; |
61 | 61 | ||
62 | char *absolutize(const char *path, size_t *retlen) |
62 | char *absolutize(const char *path, size_t *retlen) |
63 | { |
63 | { |
64 | char *ncwd_path; |
64 | char *ncwd_path; |
65 | char *ncwd_path_nc; |
65 | char *ncwd_path_nc; |
66 | 66 | ||
67 | futex_down(&cwd_futex); |
67 | futex_down(&cwd_futex); |
68 | size_t size = str_size(path); |
68 | size_t size = str_size(path); |
69 | if (*path != '/') { |
69 | if (*path != '/') { |
70 | if (!cwd_path) { |
70 | if (!cwd_path) { |
71 | futex_up(&cwd_futex); |
71 | futex_up(&cwd_futex); |
72 | return NULL; |
72 | return NULL; |
73 | } |
73 | } |
74 | ncwd_path_nc = malloc(cwd_size + 1 + size + 1); |
74 | ncwd_path_nc = malloc(cwd_size + 1 + size + 1); |
75 | if (!ncwd_path_nc) { |
75 | if (!ncwd_path_nc) { |
76 | futex_up(&cwd_futex); |
76 | futex_up(&cwd_futex); |
77 | return NULL; |
77 | return NULL; |
78 | } |
78 | } |
79 | str_cpy(ncwd_path_nc, cwd_size + 1 + size + 1, cwd_path); |
79 | str_cpy(ncwd_path_nc, cwd_size + 1 + size + 1, cwd_path); |
80 | ncwd_path_nc[cwd_size] = '/'; |
80 | ncwd_path_nc[cwd_size] = '/'; |
81 | ncwd_path_nc[cwd_size + 1] = '\0'; |
81 | ncwd_path_nc[cwd_size + 1] = '\0'; |
82 | } else { |
82 | } else { |
83 | ncwd_path_nc = malloc(size + 1); |
83 | ncwd_path_nc = malloc(size + 1); |
84 | if (!ncwd_path_nc) { |
84 | if (!ncwd_path_nc) { |
85 | futex_up(&cwd_futex); |
85 | futex_up(&cwd_futex); |
86 | return NULL; |
86 | return NULL; |
87 | } |
87 | } |
88 | ncwd_path_nc[0] = '\0'; |
88 | ncwd_path_nc[0] = '\0'; |
89 | } |
89 | } |
90 | str_append(ncwd_path_nc, cwd_size + 1 + size + 1, path); |
90 | str_append(ncwd_path_nc, cwd_size + 1 + size + 1, path); |
91 | ncwd_path = canonify(ncwd_path_nc, retlen); |
91 | ncwd_path = canonify(ncwd_path_nc, retlen); |
92 | if (!ncwd_path) { |
92 | if (!ncwd_path) { |
93 | futex_up(&cwd_futex); |
93 | futex_up(&cwd_futex); |
94 | free(ncwd_path_nc); |
94 | free(ncwd_path_nc); |
95 | return NULL; |
95 | return NULL; |
96 | } |
96 | } |
97 | /* |
97 | /* |
98 | * We need to clone ncwd_path because canonify() works in-place and thus |
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 |
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. |
100 | * though they both point into the same dynamically allocated buffer. |
101 | */ |
101 | */ |
102 | ncwd_path = str_dup(ncwd_path); |
102 | ncwd_path = str_dup(ncwd_path); |
103 | free(ncwd_path_nc); |
103 | free(ncwd_path_nc); |
104 | if (!ncwd_path) { |
104 | if (!ncwd_path) { |
105 | futex_up(&cwd_futex); |
105 | futex_up(&cwd_futex); |
106 | return NULL; |
106 | return NULL; |
107 | } |
107 | } |
108 | futex_up(&cwd_futex); |
108 | futex_up(&cwd_futex); |
109 | return ncwd_path; |
109 | return ncwd_path; |
110 | } |
110 | } |
111 | 111 | ||
112 | static void vfs_connect(void) |
112 | static void vfs_connect(void) |
113 | { |
113 | { |
114 | while (vfs_phone < 0) |
114 | while (vfs_phone < 0) |
115 | vfs_phone = ipc_connect_me_to_blocking(PHONE_NS, SERVICE_VFS, 0, 0); |
115 | vfs_phone = ipc_connect_me_to_blocking(PHONE_NS, SERVICE_VFS, 0, 0); |
116 | } |
116 | } |
117 | 117 | ||
118 | static int device_get_handle(const char *name, dev_handle_t *handle, |
- | |
119 | const unsigned int flags) |
- | |
120 | { |
- | |
121 | int phone; |
- | |
122 | - | ||
123 | if (flags & IPC_FLAG_BLOCKING) |
- | |
124 | phone = ipc_connect_me_to_blocking(PHONE_NS, SERVICE_DEVMAP, DEVMAP_CLIENT, 0); |
- | |
125 | else |
- | |
126 | phone = ipc_connect_me_to(PHONE_NS, SERVICE_DEVMAP, DEVMAP_CLIENT, 0); |
- | |
127 | - | ||
128 | if (phone < 0) |
- | |
129 | return phone; |
- | |
130 | - | ||
131 | ipc_call_t answer; |
- | |
132 | aid_t req = async_send_2(phone, DEVMAP_DEVICE_GET_HANDLE, flags, 0, |
- | |
133 | &answer); |
- | |
134 | - | ||
135 | ipcarg_t retval = ipc_data_write_start(phone, name, str_size(name) + 1); |
- | |
136 | - | ||
137 | if (retval != EOK) { |
- | |
138 | async_wait_for(req, NULL); |
- | |
139 | ipc_hangup(phone); |
- | |
140 | return retval; |
- | |
141 | } |
- | |
142 | - | ||
143 | async_wait_for(req, &retval); |
- | |
144 | - | ||
145 | if (handle != NULL) |
- | |
146 | *handle = -1; |
- | |
147 | - | ||
148 | if (retval == EOK) { |
- | |
149 | if (handle != NULL) |
- | |
150 | *handle = (dev_handle_t) IPC_GET_ARG1(answer); |
- | |
151 | } |
- | |
152 | - | ||
153 | ipc_hangup(phone); |
- | |
154 | return retval; |
- | |
155 | } |
- | |
156 | - | ||
157 | int mount(const char *fs_name, const char *mp, const char *dev, |
118 | int mount(const char *fs_name, const char *mp, const char *dev, |
158 | const unsigned int flags) |
119 | const char *opts, unsigned int flags) |
159 | { |
120 | { |
160 | int res; |
121 | int res; |
161 | ipcarg_t rc; |
122 | ipcarg_t rc; |
162 | aid_t req; |
123 | aid_t req; |
163 | dev_handle_t dev_handle; |
124 | dev_handle_t dev_handle; |
164 | 125 | ||
165 | res = device_get_handle(dev, &dev_handle, flags); |
126 | res = devmap_device_get_handle(dev, &dev_handle, flags); |
166 | if (res != EOK) |
127 | if (res != EOK) |
167 | return res; |
128 | return res; |
168 | 129 | ||
169 | size_t mpa_size; |
130 | size_t mpa_size; |
170 | char *mpa = absolutize(mp, &mpa_size); |
131 | char *mpa = absolutize(mp, &mpa_size); |
171 | if (!mpa) |
132 | if (!mpa) |
172 | return ENOMEM; |
133 | return ENOMEM; |
173 | 134 | ||
174 | futex_down(&vfs_phone_futex); |
135 | futex_down(&vfs_phone_futex); |
175 | async_serialize_start(); |
136 | async_serialize_start(); |
176 | vfs_connect(); |
137 | vfs_connect(); |
177 | 138 | ||
178 | req = async_send_2(vfs_phone, VFS_MOUNT, dev_handle, flags, NULL); |
139 | req = async_send_2(vfs_phone, VFS_MOUNT, dev_handle, flags, NULL); |
179 | rc = ipc_data_write_start(vfs_phone, (void *) mpa, mpa_size); |
140 | rc = ipc_data_write_start(vfs_phone, (void *) mpa, mpa_size); |
180 | if (rc != EOK) { |
141 | if (rc != EOK) { |
181 | async_wait_for(req, NULL); |
142 | async_wait_for(req, NULL); |
182 | async_serialize_end(); |
143 | async_serialize_end(); |
183 | futex_up(&vfs_phone_futex); |
144 | futex_up(&vfs_phone_futex); |
184 | free(mpa); |
145 | free(mpa); |
185 | return (int) rc; |
146 | return (int) rc; |
186 | } |
147 | } |
187 | 148 | ||
- | 149 | rc = ipc_data_write_start(vfs_phone, (void *) opts, str_size(opts)); |
|
- | 150 | if (rc != EOK) { |
|
- | 151 | async_wait_for(req, NULL); |
|
- | 152 | async_serialize_end(); |
|
- | 153 | futex_up(&vfs_phone_futex); |
|
- | 154 | free(mpa); |
|
- | 155 | return (int) rc; |
|
- | 156 | } |
|
- | 157 | ||
188 | rc = ipc_data_write_start(vfs_phone, (void *) fs_name, str_size(fs_name)); |
158 | rc = ipc_data_write_start(vfs_phone, (void *) fs_name, str_size(fs_name)); |
189 | if (rc != EOK) { |
159 | if (rc != EOK) { |
- | 160 | async_wait_for(req, NULL); |
|
- | 161 | async_serialize_end(); |
|
- | 162 | futex_up(&vfs_phone_futex); |
|
- | 163 | free(mpa); |
|
- | 164 | return (int) rc; |
|
- | 165 | } |
|
- | 166 | ||
- | 167 | /* Ask VFS whether it likes fs_name. */ |
|
- | 168 | rc = async_req_0_0(vfs_phone, IPC_M_PING); |
|
- | 169 | if (rc != EOK) { |
|
190 | async_wait_for(req, NULL); |
170 | async_wait_for(req, NULL); |
191 | async_serialize_end(); |
171 | async_serialize_end(); |
192 | futex_up(&vfs_phone_futex); |
172 | futex_up(&vfs_phone_futex); |
193 | free(mpa); |
173 | free(mpa); |
194 | return (int) rc; |
174 | return (int) rc; |
195 | } |
175 | } |
196 | 176 | ||
197 | async_wait_for(req, &rc); |
177 | async_wait_for(req, &rc); |
198 | async_serialize_end(); |
178 | async_serialize_end(); |
199 | futex_up(&vfs_phone_futex); |
179 | futex_up(&vfs_phone_futex); |
200 | free(mpa); |
180 | free(mpa); |
201 | 181 | ||
202 | return (int) rc; |
182 | return (int) rc; |
203 | } |
183 | } |
204 | 184 | ||
205 | static int _open(const char *path, int lflag, int oflag, ...) |
185 | static int _open(const char *path, int lflag, int oflag, ...) |
206 | { |
186 | { |
207 | ipcarg_t rc; |
187 | ipcarg_t rc; |
208 | ipc_call_t answer; |
188 | ipc_call_t answer; |
209 | aid_t req; |
189 | aid_t req; |
210 | 190 | ||
211 | size_t pa_size; |
191 | size_t pa_size; |
212 | char *pa = absolutize(path, &pa_size); |
192 | char *pa = absolutize(path, &pa_size); |
213 | if (!pa) |
193 | if (!pa) |
214 | return ENOMEM; |
194 | return ENOMEM; |
215 | 195 | ||
216 | futex_down(&vfs_phone_futex); |
196 | futex_down(&vfs_phone_futex); |
217 | async_serialize_start(); |
197 | async_serialize_start(); |
218 | vfs_connect(); |
198 | vfs_connect(); |
219 | 199 | ||
220 | req = async_send_3(vfs_phone, VFS_OPEN, lflag, oflag, 0, &answer); |
200 | req = async_send_3(vfs_phone, VFS_OPEN, lflag, oflag, 0, &answer); |
221 | rc = ipc_data_write_start(vfs_phone, pa, pa_size); |
201 | rc = ipc_data_write_start(vfs_phone, pa, pa_size); |
222 | if (rc != EOK) { |
202 | if (rc != EOK) { |
223 | async_wait_for(req, NULL); |
203 | async_wait_for(req, NULL); |
224 | async_serialize_end(); |
204 | async_serialize_end(); |
225 | futex_up(&vfs_phone_futex); |
205 | futex_up(&vfs_phone_futex); |
226 | free(pa); |
206 | free(pa); |
227 | return (int) rc; |
207 | return (int) rc; |
228 | } |
208 | } |
229 | async_wait_for(req, &rc); |
209 | async_wait_for(req, &rc); |
230 | async_serialize_end(); |
210 | async_serialize_end(); |
231 | futex_up(&vfs_phone_futex); |
211 | futex_up(&vfs_phone_futex); |
232 | free(pa); |
212 | free(pa); |
233 | 213 | ||
234 | if (rc != EOK) |
214 | if (rc != EOK) |
235 | return (int) rc; |
215 | return (int) rc; |
236 | return (int) IPC_GET_ARG1(answer); |
216 | return (int) IPC_GET_ARG1(answer); |
237 | } |
217 | } |
238 | 218 | ||
239 | int open(const char *path, int oflag, ...) |
219 | int open(const char *path, int oflag, ...) |
240 | { |
220 | { |
241 | return _open(path, L_FILE, oflag); |
221 | return _open(path, L_FILE, oflag); |
242 | } |
222 | } |
243 | 223 | ||
244 | int close(int fildes) |
224 | int close(int fildes) |
245 | { |
225 | { |
246 | ipcarg_t rc; |
226 | ipcarg_t rc; |
247 | 227 | ||
248 | futex_down(&vfs_phone_futex); |
228 | futex_down(&vfs_phone_futex); |
249 | async_serialize_start(); |
229 | async_serialize_start(); |
250 | vfs_connect(); |
230 | vfs_connect(); |
251 | 231 | ||
252 | rc = async_req_1_0(vfs_phone, VFS_CLOSE, fildes); |
232 | rc = async_req_1_0(vfs_phone, VFS_CLOSE, fildes); |
253 | 233 | ||
254 | async_serialize_end(); |
234 | async_serialize_end(); |
255 | futex_up(&vfs_phone_futex); |
235 | futex_up(&vfs_phone_futex); |
256 | 236 | ||
257 | return (int)rc; |
237 | return (int)rc; |
258 | } |
238 | } |
259 | 239 | ||
260 | ssize_t read(int fildes, void *buf, size_t nbyte) |
240 | ssize_t read(int fildes, void *buf, size_t nbyte) |
261 | { |
241 | { |
262 | ipcarg_t rc; |
242 | ipcarg_t rc; |
263 | ipc_call_t answer; |
243 | ipc_call_t answer; |
264 | aid_t req; |
244 | aid_t req; |
265 | 245 | ||
266 | futex_down(&vfs_phone_futex); |
246 | futex_down(&vfs_phone_futex); |
267 | async_serialize_start(); |
247 | async_serialize_start(); |
268 | vfs_connect(); |
248 | vfs_connect(); |
269 | 249 | ||
270 | req = async_send_1(vfs_phone, VFS_READ, fildes, &answer); |
250 | req = async_send_1(vfs_phone, VFS_READ, fildes, &answer); |
271 | rc = ipc_data_read_start(vfs_phone, (void *)buf, nbyte); |
251 | rc = ipc_data_read_start(vfs_phone, (void *)buf, nbyte); |
272 | if (rc != EOK) { |
252 | if (rc != EOK) { |
273 | async_wait_for(req, NULL); |
253 | async_wait_for(req, NULL); |
274 | async_serialize_end(); |
254 | async_serialize_end(); |
275 | futex_up(&vfs_phone_futex); |
255 | futex_up(&vfs_phone_futex); |
276 | return (ssize_t) rc; |
256 | return (ssize_t) rc; |
277 | } |
257 | } |
278 | async_wait_for(req, &rc); |
258 | async_wait_for(req, &rc); |
279 | async_serialize_end(); |
259 | async_serialize_end(); |
280 | futex_up(&vfs_phone_futex); |
260 | futex_up(&vfs_phone_futex); |
281 | if (rc == EOK) |
261 | if (rc == EOK) |
282 | return (ssize_t) IPC_GET_ARG1(answer); |
262 | return (ssize_t) IPC_GET_ARG1(answer); |
283 | else |
263 | else |
284 | return rc; |
264 | return rc; |
285 | } |
265 | } |
286 | 266 | ||
287 | ssize_t write(int fildes, const void *buf, size_t nbyte) |
267 | ssize_t write(int fildes, const void *buf, size_t nbyte) |
288 | { |
268 | { |
289 | ipcarg_t rc; |
269 | ipcarg_t rc; |
290 | ipc_call_t answer; |
270 | ipc_call_t answer; |
291 | aid_t req; |
271 | aid_t req; |
292 | 272 | ||
293 | futex_down(&vfs_phone_futex); |
273 | futex_down(&vfs_phone_futex); |
294 | async_serialize_start(); |
274 | async_serialize_start(); |
295 | vfs_connect(); |
275 | vfs_connect(); |
296 | 276 | ||
297 | req = async_send_1(vfs_phone, VFS_WRITE, fildes, &answer); |
277 | req = async_send_1(vfs_phone, VFS_WRITE, fildes, &answer); |
298 | rc = ipc_data_write_start(vfs_phone, (void *)buf, nbyte); |
278 | rc = ipc_data_write_start(vfs_phone, (void *)buf, nbyte); |
299 | if (rc != EOK) { |
279 | if (rc != EOK) { |
300 | async_wait_for(req, NULL); |
280 | async_wait_for(req, NULL); |
301 | async_serialize_end(); |
281 | async_serialize_end(); |
302 | futex_up(&vfs_phone_futex); |
282 | futex_up(&vfs_phone_futex); |
303 | return (ssize_t) rc; |
283 | return (ssize_t) rc; |
304 | } |
284 | } |
305 | async_wait_for(req, &rc); |
285 | async_wait_for(req, &rc); |
306 | async_serialize_end(); |
286 | async_serialize_end(); |
307 | futex_up(&vfs_phone_futex); |
287 | futex_up(&vfs_phone_futex); |
308 | if (rc == EOK) |
288 | if (rc == EOK) |
309 | return (ssize_t) IPC_GET_ARG1(answer); |
289 | return (ssize_t) IPC_GET_ARG1(answer); |
310 | else |
290 | else |
311 | return -1; |
291 | return -1; |
312 | } |
292 | } |
313 | 293 | ||
314 | off_t lseek(int fildes, off_t offset, int whence) |
294 | off_t lseek(int fildes, off_t offset, int whence) |
315 | { |
295 | { |
316 | ipcarg_t rc; |
296 | ipcarg_t rc; |
317 | 297 | ||
318 | futex_down(&vfs_phone_futex); |
298 | futex_down(&vfs_phone_futex); |
319 | async_serialize_start(); |
299 | async_serialize_start(); |
320 | vfs_connect(); |
300 | vfs_connect(); |
321 | 301 | ||
322 | ipcarg_t newoffs; |
302 | ipcarg_t newoffs; |
323 | rc = async_req_3_1(vfs_phone, VFS_SEEK, fildes, offset, whence, |
303 | rc = async_req_3_1(vfs_phone, VFS_SEEK, fildes, offset, whence, |
324 | &newoffs); |
304 | &newoffs); |
325 | 305 | ||
326 | async_serialize_end(); |
306 | async_serialize_end(); |
327 | futex_up(&vfs_phone_futex); |
307 | futex_up(&vfs_phone_futex); |
328 | 308 | ||
329 | if (rc != EOK) |
309 | if (rc != EOK) |
330 | return (off_t) -1; |
310 | return (off_t) -1; |
331 | 311 | ||
332 | return (off_t) newoffs; |
312 | return (off_t) newoffs; |
333 | } |
313 | } |
334 | 314 | ||
335 | int ftruncate(int fildes, off_t length) |
315 | int ftruncate(int fildes, off_t length) |
336 | { |
316 | { |
337 | ipcarg_t rc; |
317 | ipcarg_t rc; |
338 | 318 | ||
339 | futex_down(&vfs_phone_futex); |
319 | futex_down(&vfs_phone_futex); |
340 | async_serialize_start(); |
320 | async_serialize_start(); |
341 | vfs_connect(); |
321 | vfs_connect(); |
342 | 322 | ||
343 | rc = async_req_2_0(vfs_phone, VFS_TRUNCATE, fildes, length); |
323 | rc = async_req_2_0(vfs_phone, VFS_TRUNCATE, fildes, length); |
344 | async_serialize_end(); |
324 | async_serialize_end(); |
345 | futex_up(&vfs_phone_futex); |
325 | futex_up(&vfs_phone_futex); |
346 | return (int) rc; |
326 | return (int) rc; |
347 | } |
327 | } |
348 | 328 | ||
349 | DIR *opendir(const char *dirname) |
329 | DIR *opendir(const char *dirname) |
350 | { |
330 | { |
351 | DIR *dirp = malloc(sizeof(DIR)); |
331 | DIR *dirp = malloc(sizeof(DIR)); |
352 | if (!dirp) |
332 | if (!dirp) |
353 | return NULL; |
333 | return NULL; |
354 | dirp->fd = _open(dirname, L_DIRECTORY, 0); |
334 | dirp->fd = _open(dirname, L_DIRECTORY, 0); |
355 | if (dirp->fd < 0) { |
335 | if (dirp->fd < 0) { |
356 | free(dirp); |
336 | free(dirp); |
357 | return NULL; |
337 | return NULL; |
358 | } |
338 | } |
359 | return dirp; |
339 | return dirp; |
360 | } |
340 | } |
361 | 341 | ||
362 | struct dirent *readdir(DIR *dirp) |
342 | struct dirent *readdir(DIR *dirp) |
363 | { |
343 | { |
364 | ssize_t len = read(dirp->fd, &dirp->res.d_name[0], NAME_MAX + 1); |
344 | ssize_t len = read(dirp->fd, &dirp->res.d_name[0], NAME_MAX + 1); |
365 | if (len <= 0) |
345 | if (len <= 0) |
366 | return NULL; |
346 | return NULL; |
367 | return &dirp->res; |
347 | return &dirp->res; |
368 | } |
348 | } |
369 | 349 | ||
370 | void rewinddir(DIR *dirp) |
350 | void rewinddir(DIR *dirp) |
371 | { |
351 | { |
372 | (void) lseek(dirp->fd, 0, SEEK_SET); |
352 | (void) lseek(dirp->fd, 0, SEEK_SET); |
373 | } |
353 | } |
374 | 354 | ||
375 | int closedir(DIR *dirp) |
355 | int closedir(DIR *dirp) |
376 | { |
356 | { |
377 | (void) close(dirp->fd); |
357 | (void) close(dirp->fd); |
378 | free(dirp); |
358 | free(dirp); |
379 | return 0; |
359 | return 0; |
380 | } |
360 | } |
381 | 361 | ||
382 | int mkdir(const char *path, mode_t mode) |
362 | int mkdir(const char *path, mode_t mode) |
383 | { |
363 | { |
384 | ipcarg_t rc; |
364 | ipcarg_t rc; |
385 | aid_t req; |
365 | aid_t req; |
386 | 366 | ||
387 | size_t pa_size; |
367 | size_t pa_size; |
388 | char *pa = absolutize(path, &pa_size); |
368 | char *pa = absolutize(path, &pa_size); |
389 | if (!pa) |
369 | if (!pa) |
390 | return ENOMEM; |
370 | return ENOMEM; |
391 | 371 | ||
392 | futex_down(&vfs_phone_futex); |
372 | futex_down(&vfs_phone_futex); |
393 | async_serialize_start(); |
373 | async_serialize_start(); |
394 | vfs_connect(); |
374 | vfs_connect(); |
395 | 375 | ||
396 | req = async_send_1(vfs_phone, VFS_MKDIR, mode, NULL); |
376 | req = async_send_1(vfs_phone, VFS_MKDIR, mode, NULL); |
397 | rc = ipc_data_write_start(vfs_phone, pa, pa_size); |
377 | rc = ipc_data_write_start(vfs_phone, pa, pa_size); |
398 | if (rc != EOK) { |
378 | if (rc != EOK) { |
399 | async_wait_for(req, NULL); |
379 | async_wait_for(req, NULL); |
400 | async_serialize_end(); |
380 | async_serialize_end(); |
401 | futex_up(&vfs_phone_futex); |
381 | futex_up(&vfs_phone_futex); |
402 | free(pa); |
382 | free(pa); |
403 | return (int) rc; |
383 | return (int) rc; |
404 | } |
384 | } |
405 | async_wait_for(req, &rc); |
385 | async_wait_for(req, &rc); |
406 | async_serialize_end(); |
386 | async_serialize_end(); |
407 | futex_up(&vfs_phone_futex); |
387 | futex_up(&vfs_phone_futex); |
408 | free(pa); |
388 | free(pa); |
409 | return rc; |
389 | return rc; |
410 | } |
390 | } |
411 | 391 | ||
412 | static int _unlink(const char *path, int lflag) |
392 | static int _unlink(const char *path, int lflag) |
413 | { |
393 | { |
414 | ipcarg_t rc; |
394 | ipcarg_t rc; |
415 | aid_t req; |
395 | aid_t req; |
416 | 396 | ||
417 | size_t pa_size; |
397 | size_t pa_size; |
418 | char *pa = absolutize(path, &pa_size); |
398 | char *pa = absolutize(path, &pa_size); |
419 | if (!pa) |
399 | if (!pa) |
420 | return ENOMEM; |
400 | return ENOMEM; |
421 | 401 | ||
422 | futex_down(&vfs_phone_futex); |
402 | futex_down(&vfs_phone_futex); |
423 | async_serialize_start(); |
403 | async_serialize_start(); |
424 | vfs_connect(); |
404 | vfs_connect(); |
425 | 405 | ||
426 | req = async_send_0(vfs_phone, VFS_UNLINK, NULL); |
406 | req = async_send_0(vfs_phone, VFS_UNLINK, NULL); |
427 | rc = ipc_data_write_start(vfs_phone, pa, pa_size); |
407 | rc = ipc_data_write_start(vfs_phone, pa, pa_size); |
428 | if (rc != EOK) { |
408 | if (rc != EOK) { |
429 | async_wait_for(req, NULL); |
409 | async_wait_for(req, NULL); |
430 | async_serialize_end(); |
410 | async_serialize_end(); |
431 | futex_up(&vfs_phone_futex); |
411 | futex_up(&vfs_phone_futex); |
432 | free(pa); |
412 | free(pa); |
433 | return (int) rc; |
413 | return (int) rc; |
434 | } |
414 | } |
435 | async_wait_for(req, &rc); |
415 | async_wait_for(req, &rc); |
436 | async_serialize_end(); |
416 | async_serialize_end(); |
437 | futex_up(&vfs_phone_futex); |
417 | futex_up(&vfs_phone_futex); |
438 | free(pa); |
418 | free(pa); |
439 | return rc; |
419 | return rc; |
440 | } |
420 | } |
441 | 421 | ||
442 | int unlink(const char *path) |
422 | int unlink(const char *path) |
443 | { |
423 | { |
444 | return _unlink(path, L_NONE); |
424 | return _unlink(path, L_NONE); |
445 | } |
425 | } |
446 | 426 | ||
447 | int rmdir(const char *path) |
427 | int rmdir(const char *path) |
448 | { |
428 | { |
449 | return _unlink(path, L_DIRECTORY); |
429 | return _unlink(path, L_DIRECTORY); |
450 | } |
430 | } |
451 | 431 | ||
452 | int rename(const char *old, const char *new) |
432 | int rename(const char *old, const char *new) |
453 | { |
433 | { |
454 | ipcarg_t rc; |
434 | ipcarg_t rc; |
455 | aid_t req; |
435 | aid_t req; |
456 | 436 | ||
457 | size_t olda_size; |
437 | size_t olda_size; |
458 | char *olda = absolutize(old, &olda_size); |
438 | char *olda = absolutize(old, &olda_size); |
459 | if (!olda) |
439 | if (!olda) |
460 | return ENOMEM; |
440 | return ENOMEM; |
461 | 441 | ||
462 | size_t newa_size; |
442 | size_t newa_size; |
463 | char *newa = absolutize(new, &newa_size); |
443 | char *newa = absolutize(new, &newa_size); |
464 | if (!newa) { |
444 | if (!newa) { |
465 | free(olda); |
445 | free(olda); |
466 | return ENOMEM; |
446 | return ENOMEM; |
467 | } |
447 | } |
468 | 448 | ||
469 | futex_down(&vfs_phone_futex); |
449 | futex_down(&vfs_phone_futex); |
470 | async_serialize_start(); |
450 | async_serialize_start(); |
471 | vfs_connect(); |
451 | vfs_connect(); |
472 | 452 | ||
473 | req = async_send_0(vfs_phone, VFS_RENAME, NULL); |
453 | req = async_send_0(vfs_phone, VFS_RENAME, NULL); |
474 | rc = ipc_data_write_start(vfs_phone, olda, olda_size); |
454 | rc = ipc_data_write_start(vfs_phone, olda, olda_size); |
475 | if (rc != EOK) { |
455 | if (rc != EOK) { |
476 | async_wait_for(req, NULL); |
456 | async_wait_for(req, NULL); |
477 | async_serialize_end(); |
457 | async_serialize_end(); |
478 | futex_up(&vfs_phone_futex); |
458 | futex_up(&vfs_phone_futex); |
479 | free(olda); |
459 | free(olda); |
480 | free(newa); |
460 | free(newa); |
481 | return (int) rc; |
461 | return (int) rc; |
482 | } |
462 | } |
483 | rc = ipc_data_write_start(vfs_phone, newa, newa_size); |
463 | rc = ipc_data_write_start(vfs_phone, newa, newa_size); |
484 | if (rc != EOK) { |
464 | if (rc != EOK) { |
485 | async_wait_for(req, NULL); |
465 | async_wait_for(req, NULL); |
486 | async_serialize_end(); |
466 | async_serialize_end(); |
487 | futex_up(&vfs_phone_futex); |
467 | futex_up(&vfs_phone_futex); |
488 | free(olda); |
468 | free(olda); |
489 | free(newa); |
469 | free(newa); |
490 | return (int) rc; |
470 | return (int) rc; |
491 | } |
471 | } |
492 | async_wait_for(req, &rc); |
472 | async_wait_for(req, &rc); |
493 | async_serialize_end(); |
473 | async_serialize_end(); |
494 | futex_up(&vfs_phone_futex); |
474 | futex_up(&vfs_phone_futex); |
495 | free(olda); |
475 | free(olda); |
496 | free(newa); |
476 | free(newa); |
497 | return rc; |
477 | return rc; |
498 | } |
478 | } |
499 | 479 | ||
500 | int chdir(const char *path) |
480 | int chdir(const char *path) |
501 | { |
481 | { |
502 | size_t pa_size; |
482 | size_t pa_size; |
503 | char *pa = absolutize(path, &pa_size); |
483 | char *pa = absolutize(path, &pa_size); |
504 | if (!pa) |
484 | if (!pa) |
505 | return ENOMEM; |
485 | return ENOMEM; |
506 | 486 | ||
507 | DIR *d = opendir(pa); |
487 | DIR *d = opendir(pa); |
508 | if (!d) { |
488 | if (!d) { |
509 | free(pa); |
489 | free(pa); |
510 | return ENOENT; |
490 | return ENOENT; |
511 | } |
491 | } |
512 | 492 | ||
513 | futex_down(&cwd_futex); |
493 | futex_down(&cwd_futex); |
514 | if (cwd_dir) { |
494 | if (cwd_dir) { |
515 | closedir(cwd_dir); |
495 | closedir(cwd_dir); |
516 | cwd_dir = NULL; |
496 | cwd_dir = NULL; |
517 | free(cwd_path); |
497 | free(cwd_path); |
518 | cwd_path = NULL; |
498 | cwd_path = NULL; |
519 | cwd_size = 0; |
499 | cwd_size = 0; |
520 | } |
500 | } |
521 | cwd_dir = d; |
501 | cwd_dir = d; |
522 | cwd_path = pa; |
502 | cwd_path = pa; |
523 | cwd_size = pa_size; |
503 | cwd_size = pa_size; |
524 | futex_up(&cwd_futex); |
504 | futex_up(&cwd_futex); |
525 | return EOK; |
505 | return EOK; |
526 | } |
506 | } |
527 | 507 | ||
528 | char *getcwd(char *buf, size_t size) |
508 | char *getcwd(char *buf, size_t size) |
529 | { |
509 | { |
530 | if (!size) |
510 | if (!size) |
531 | return NULL; |
511 | return NULL; |
532 | futex_down(&cwd_futex); |
512 | futex_down(&cwd_futex); |
533 | if (size < cwd_size + 1) { |
513 | if (size < cwd_size + 1) { |
534 | futex_up(&cwd_futex); |
514 | futex_up(&cwd_futex); |
535 | return NULL; |
515 | return NULL; |
536 | } |
516 | } |
537 | str_cpy(buf, size, cwd_path); |
517 | str_cpy(buf, size, cwd_path); |
538 | futex_up(&cwd_futex); |
518 | futex_up(&cwd_futex); |
539 | return buf; |
519 | return buf; |
540 | } |
520 | } |
541 | 521 | ||
542 | /** @} |
522 | /** @} |
543 | */ |
523 | */ |
544 | 524 |