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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.h> |
35 | #include <vfs.h> |
36 | #include <unistd.h> |
36 | #include <unistd.h> |
37 | #include <fcntl.h> |
37 | #include <fcntl.h> |
38 | #include <ipc/ipc.h> |
38 | #include <ipc/ipc.h> |
39 | #include <ipc/services.h> |
39 | #include <ipc/services.h> |
40 | #include <async.h> |
40 | #include <async.h> |
41 | #include <atomic.h> |
41 | #include <atomic.h> |
42 | #include <futex.h> |
42 | #include <futex.h> |
43 | #include <errno.h> |
43 | #include <errno.h> |
44 | #include <string.h> |
44 | #include <string.h> |
45 | #include "../../srv/vfs/vfs.h" |
45 | #include "../../srv/vfs/vfs.h" |
46 | 46 | ||
47 | int vfs_phone = -1; |
47 | int vfs_phone = -1; |
48 | atomic_t vfs_phone_futex = FUTEX_INITIALIZER; |
48 | atomic_t vfs_phone_futex = FUTEX_INITIALIZER; |
49 | 49 | ||
50 | static int vfs_connect(void) |
50 | static int vfs_connect(void) |
51 | { |
51 | { |
52 | if (vfs_phone < 0) |
52 | if (vfs_phone < 0) |
53 | vfs_phone = ipc_connect_me_to(PHONE_NS, SERVICE_VFS, 0, 0); |
53 | vfs_phone = ipc_connect_me_to(PHONE_NS, SERVICE_VFS, 0, 0); |
54 | return vfs_phone; |
54 | return vfs_phone; |
55 | } |
55 | } |
56 | 56 | ||
57 | int mount(const char *fs_name, const char *mp, const char *dev) |
57 | int mount(const char *fs_name, const char *mp, const char *dev) |
58 | { |
58 | { |
59 | int res; |
59 | int res; |
60 | ipcarg_t rc; |
60 | ipcarg_t rc; |
61 | aid_t req; |
61 | aid_t req; |
62 | 62 | ||
63 | int dev_handle = 0; /* TODO */ |
63 | int dev_handle = 0; /* TODO */ |
64 | 64 | ||
65 | futex_down(&vfs_phone_futex); |
65 | futex_down(&vfs_phone_futex); |
66 | async_serialize_start(); |
66 | async_serialize_start(); |
67 | if (vfs_phone < 0) { |
67 | if (vfs_phone < 0) { |
68 | res = vfs_connect(); |
68 | res = vfs_connect(); |
69 | if (res < 0) { |
69 | if (res < 0) { |
70 | async_serialize_end(); |
70 | async_serialize_end(); |
71 | futex_up(&vfs_phone_futex); |
71 | futex_up(&vfs_phone_futex); |
72 | return res; |
72 | return res; |
73 | } |
73 | } |
74 | } |
74 | } |
75 | req = async_send_1(vfs_phone, VFS_MOUNT, dev_handle, NULL); |
75 | req = async_send_1(vfs_phone, VFS_MOUNT, dev_handle, NULL); |
76 | rc = ipc_data_write_start(vfs_phone, (void *)fs_name, strlen(fs_name)); |
76 | rc = ipc_data_write_start(vfs_phone, (void *)fs_name, strlen(fs_name)); |
77 | if (rc != EOK) { |
77 | if (rc != EOK) { |
78 | async_wait_for(req, NULL); |
78 | async_wait_for(req, NULL); |
79 | async_serialize_end(); |
79 | async_serialize_end(); |
80 | futex_up(&vfs_phone_futex); |
80 | futex_up(&vfs_phone_futex); |
81 | return (int) rc; |
81 | return (int) rc; |
82 | } |
82 | } |
83 | rc = ipc_data_write_start(vfs_phone, (void *)mp, strlen(mp)); |
83 | rc = ipc_data_write_start(vfs_phone, (void *)mp, strlen(mp)); |
84 | if (rc != EOK) { |
84 | if (rc != EOK) { |
85 | async_wait_for(req, NULL); |
85 | async_wait_for(req, NULL); |
86 | async_serialize_end(); |
86 | async_serialize_end(); |
87 | futex_up(&vfs_phone_futex); |
87 | futex_up(&vfs_phone_futex); |
88 | return (int) rc; |
88 | return (int) rc; |
89 | } |
89 | } |
90 | async_wait_for(req, &rc); |
90 | async_wait_for(req, &rc); |
91 | async_serialize_end(); |
91 | async_serialize_end(); |
92 | futex_up(&vfs_phone_futex); |
92 | futex_up(&vfs_phone_futex); |
93 | return (int) rc; |
93 | return (int) rc; |
94 | } |
94 | } |
95 | 95 | ||
96 | 96 | ||
97 | int open(const char *name, int oflag, ...) |
97 | int open(const char *path, int oflag, ...) |
98 | { |
98 | { |
99 | int res; |
99 | int res; |
100 | ipcarg_t rc; |
100 | ipcarg_t rc; |
101 | ipc_call_t answer; |
101 | ipc_call_t answer; |
102 | aid_t req; |
102 | aid_t req; |
103 | 103 | ||
104 | futex_down(&vfs_phone_futex); |
104 | futex_down(&vfs_phone_futex); |
105 | async_serialize_start(); |
105 | async_serialize_start(); |
106 | if (vfs_phone < 0) { |
106 | if (vfs_phone < 0) { |
107 | res = vfs_connect(); |
107 | res = vfs_connect(); |
108 | if (res < 0) { |
108 | if (res < 0) { |
109 | async_serialize_end(); |
109 | async_serialize_end(); |
110 | futex_up(&vfs_phone_futex); |
110 | futex_up(&vfs_phone_futex); |
111 | return res; |
111 | return res; |
112 | } |
112 | } |
113 | } |
113 | } |
114 | req = async_send_2(vfs_phone, VFS_OPEN, oflag, 0, &answer); |
114 | req = async_send_2(vfs_phone, VFS_OPEN, oflag, 0, &answer); |
115 | rc = ipc_data_write_start(vfs_phone, name, strlen(name)); |
115 | rc = ipc_data_write_start(vfs_phone, path, strlen(path)); |
116 | if (rc != EOK) { |
116 | if (rc != EOK) { |
117 | async_wait_for(req, NULL); |
117 | async_wait_for(req, NULL); |
118 | async_serialize_end(); |
118 | async_serialize_end(); |
119 | futex_up(&vfs_phone_futex); |
119 | futex_up(&vfs_phone_futex); |
120 | return (int) rc; |
120 | return (int) rc; |
121 | } |
121 | } |
122 | async_wait_for(req, &rc); |
122 | async_wait_for(req, &rc); |
123 | async_serialize_end(); |
123 | async_serialize_end(); |
124 | futex_up(&vfs_phone_futex); |
124 | futex_up(&vfs_phone_futex); |
125 | return (int) IPC_GET_ARG1(answer); |
125 | return (int) IPC_GET_ARG1(answer); |
126 | } |
126 | } |
127 | 127 | ||
128 | ssize_t read(int fildes, void *buf, size_t nbyte) |
128 | ssize_t read(int fildes, void *buf, size_t nbyte) |
129 | { |
129 | { |
130 | int res; |
130 | int res; |
131 | ipcarg_t rc; |
131 | ipcarg_t rc; |
132 | ipc_call_t answer; |
132 | ipc_call_t answer; |
133 | aid_t req; |
133 | aid_t req; |
134 | 134 | ||
135 | futex_down(&vfs_phone_futex); |
135 | futex_down(&vfs_phone_futex); |
136 | async_serialize_start(); |
136 | async_serialize_start(); |
137 | if (vfs_phone < 0) { |
137 | if (vfs_phone < 0) { |
138 | res = vfs_connect(); |
138 | res = vfs_connect(); |
139 | if (res < 0) { |
139 | if (res < 0) { |
140 | async_serialize_end(); |
140 | async_serialize_end(); |
141 | futex_up(&vfs_phone_futex); |
141 | futex_up(&vfs_phone_futex); |
142 | return res; |
142 | return res; |
143 | } |
143 | } |
144 | } |
144 | } |
145 | req = async_send_1(vfs_phone, VFS_READ, fildes, &answer); |
145 | req = async_send_1(vfs_phone, VFS_READ, fildes, &answer); |
146 | if (ipc_data_read_start(vfs_phone, (void *)buf, nbyte) != EOK) { |
146 | if (ipc_data_read_start(vfs_phone, (void *)buf, nbyte) != EOK) { |
147 | async_wait_for(req, NULL); |
147 | async_wait_for(req, NULL); |
148 | async_serialize_end(); |
148 | async_serialize_end(); |
149 | futex_up(&vfs_phone_futex); |
149 | futex_up(&vfs_phone_futex); |
150 | return (ssize_t) rc; |
150 | return (ssize_t) rc; |
151 | } |
151 | } |
152 | async_wait_for(req, &rc); |
152 | async_wait_for(req, &rc); |
153 | async_serialize_end(); |
153 | async_serialize_end(); |
154 | futex_up(&vfs_phone_futex); |
154 | futex_up(&vfs_phone_futex); |
155 | return (ssize_t) IPC_GET_ARG1(answer); |
155 | return (ssize_t) IPC_GET_ARG1(answer); |
156 | } |
156 | } |
157 | 157 | ||
158 | ssize_t write(int fildes, const void *buf, size_t nbyte) |
158 | ssize_t write(int fildes, const void *buf, size_t nbyte) |
159 | { |
159 | { |
160 | int res; |
160 | int res; |
161 | ipcarg_t rc; |
161 | ipcarg_t rc; |
162 | ipc_call_t answer; |
162 | ipc_call_t answer; |
163 | aid_t req; |
163 | aid_t req; |
164 | 164 | ||
165 | futex_down(&vfs_phone_futex); |
165 | futex_down(&vfs_phone_futex); |
166 | async_serialize_start(); |
166 | async_serialize_start(); |
167 | if (vfs_phone < 0) { |
167 | if (vfs_phone < 0) { |
168 | res = vfs_connect(); |
168 | res = vfs_connect(); |
169 | if (res < 0) { |
169 | if (res < 0) { |
170 | async_serialize_end(); |
170 | async_serialize_end(); |
171 | futex_up(&vfs_phone_futex); |
171 | futex_up(&vfs_phone_futex); |
172 | return res; |
172 | return res; |
173 | } |
173 | } |
174 | } |
174 | } |
175 | req = async_send_1(vfs_phone, VFS_WRITE, fildes, &answer); |
175 | req = async_send_1(vfs_phone, VFS_WRITE, fildes, &answer); |
176 | if (ipc_data_write_start(vfs_phone, (void *)buf, nbyte) != EOK) { |
176 | if (ipc_data_write_start(vfs_phone, (void *)buf, nbyte) != EOK) { |
177 | async_wait_for(req, NULL); |
177 | async_wait_for(req, NULL); |
178 | async_serialize_end(); |
178 | async_serialize_end(); |
179 | futex_up(&vfs_phone_futex); |
179 | futex_up(&vfs_phone_futex); |
180 | return (ssize_t) rc; |
180 | return (ssize_t) rc; |
181 | } |
181 | } |
182 | async_wait_for(req, &rc); |
182 | async_wait_for(req, &rc); |
183 | async_serialize_end(); |
183 | async_serialize_end(); |
184 | futex_up(&vfs_phone_futex); |
184 | futex_up(&vfs_phone_futex); |
185 | return (ssize_t) IPC_GET_ARG1(answer); |
185 | return (ssize_t) IPC_GET_ARG1(answer); |
186 | } |
186 | } |
187 | 187 | ||
188 | off_t lseek(int fildes, off_t offset, int whence) |
188 | off_t lseek(int fildes, off_t offset, int whence) |
189 | { |
189 | { |
190 | int res; |
190 | int res; |
191 | ipcarg_t rc; |
191 | ipcarg_t rc; |
192 | 192 | ||
193 | futex_down(&vfs_phone_futex); |
193 | futex_down(&vfs_phone_futex); |
194 | async_serialize_start(); |
194 | async_serialize_start(); |
195 | if (vfs_phone < 0) { |
195 | if (vfs_phone < 0) { |
196 | res = vfs_connect(); |
196 | res = vfs_connect(); |
197 | if (res < 0) { |
197 | if (res < 0) { |
198 | async_serialize_end(); |
198 | async_serialize_end(); |
199 | futex_up(&vfs_phone_futex); |
199 | futex_up(&vfs_phone_futex); |
200 | return res; |
200 | return res; |
201 | } |
201 | } |
202 | } |
202 | } |
203 | 203 | ||
204 | off_t newoffs; |
204 | off_t newoffs; |
205 | rc = async_req_3_1(vfs_phone, VFS_SEEK, fildes, offset, whence, |
205 | rc = async_req_3_1(vfs_phone, VFS_SEEK, fildes, offset, whence, |
206 | &newoffs); |
206 | &newoffs); |
207 | 207 | ||
208 | async_serialize_end(); |
208 | async_serialize_end(); |
209 | futex_up(&vfs_phone_futex); |
209 | futex_up(&vfs_phone_futex); |
210 | 210 | ||
211 | if (rc != EOK) |
211 | if (rc != EOK) |
212 | return (off_t) -1; |
212 | return (off_t) -1; |
213 | 213 | ||
214 | return newoffs; |
214 | return newoffs; |
215 | } |
215 | } |
- | 216 | ||
- | 217 | int ftruncate(int fildes, off_t length) |
|
- | 218 | { |
|
- | 219 | int res; |
|
- | 220 | ipcarg_t rc; |
|
- | 221 | ||
- | 222 | futex_down(&vfs_phone_futex); |
|
- | 223 | async_serialize_start(); |
|
- | 224 | if (vfs_phone < 0) { |
|
- | 225 | res = vfs_connect(); |
|
- | 226 | if (res < 0) { |
|
- | 227 | async_serialize_end(); |
|
- | 228 | futex_up(&vfs_phone_futex); |
|
- | 229 | return res; |
|
- | 230 | } |
|
- | 231 | } |
|
- | 232 | rc = async_req_2_0(vfs_phone, VFS_TRUNCATE, fildes, length); |
|
- | 233 | async_serialize_end(); |
|
- | 234 | futex_up(&vfs_phone_futex); |
|
- | 235 | return (int) rc; |
|
- | 236 | } |
|
216 | 237 | ||
217 | /** @} |
238 | /** @} |
218 | */ |
239 | */ |
219 | 240 |