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1 | /* |
1 | /* |
2 | * Copyright (c) 2007 Jakub Jermar |
2 | * Copyright (c) 2007 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> |
|
- | 37 | #include <fcntl.h> |
|
36 | #include <ipc/ipc.h> |
38 | #include <ipc/ipc.h> |
37 | #include <ipc/services.h> |
39 | #include <ipc/services.h> |
38 | #include <async.h> |
40 | #include <async.h> |
39 | #include <atomic.h> |
41 | #include <atomic.h> |
40 | #include <futex.h> |
42 | #include <futex.h> |
41 | #include <errno.h> |
43 | #include <errno.h> |
42 | #include <string.h> |
44 | #include <string.h> |
43 | #include "../../srv/vfs/vfs.h" |
45 | #include "../../srv/vfs/vfs.h" |
44 | 46 | ||
45 | int vfs_phone = -1; |
47 | int vfs_phone = -1; |
46 | atomic_t vfs_phone_futex = FUTEX_INITIALIZER; |
48 | atomic_t vfs_phone_futex = FUTEX_INITIALIZER; |
47 | 49 | ||
48 | static int vfs_connect(void) |
50 | static int vfs_connect(void) |
49 | { |
51 | { |
50 | if (vfs_phone < 0) |
52 | if (vfs_phone < 0) |
51 | 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); |
52 | return vfs_phone; |
54 | return vfs_phone; |
53 | } |
55 | } |
54 | 56 | ||
55 | 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) |
56 | { |
58 | { |
57 | int res; |
59 | int res; |
58 | ipcarg_t rc; |
60 | ipcarg_t rc; |
59 | aid_t req; |
61 | aid_t req; |
60 | 62 | ||
61 | int dev_handle = 0; /* TODO */ |
63 | int dev_handle = 0; /* TODO */ |
62 | 64 | ||
63 | futex_down(&vfs_phone_futex); |
65 | futex_down(&vfs_phone_futex); |
64 | async_serialize_start(); |
66 | async_serialize_start(); |
65 | if (vfs_phone < 0) { |
67 | if (vfs_phone < 0) { |
66 | res = vfs_connect(); |
68 | res = vfs_connect(); |
67 | if (res < 0) { |
69 | if (res < 0) { |
68 | async_serialize_end(); |
70 | async_serialize_end(); |
69 | futex_up(&vfs_phone_futex); |
71 | futex_up(&vfs_phone_futex); |
70 | return res; |
72 | return res; |
71 | } |
73 | } |
72 | } |
74 | } |
73 | req = async_send_1(vfs_phone, VFS_MOUNT, dev_handle, NULL); |
75 | req = async_send_1(vfs_phone, VFS_MOUNT, dev_handle, NULL); |
74 | rc = ipc_data_write_send(vfs_phone, (void *)fs_name, strlen(fs_name)); |
76 | rc = ipc_data_write_send(vfs_phone, (void *)fs_name, strlen(fs_name)); |
75 | if (rc != EOK) { |
77 | if (rc != EOK) { |
76 | async_wait_for(req, NULL); |
78 | async_wait_for(req, NULL); |
77 | async_serialize_end(); |
79 | async_serialize_end(); |
78 | futex_up(&vfs_phone_futex); |
80 | futex_up(&vfs_phone_futex); |
79 | return (int) rc; |
81 | return (int) rc; |
80 | } |
82 | } |
81 | rc = ipc_data_write_send(vfs_phone, (void *)mp, strlen(mp)); |
83 | rc = ipc_data_write_send(vfs_phone, (void *)mp, strlen(mp)); |
82 | if (rc != EOK) { |
84 | if (rc != EOK) { |
83 | async_wait_for(req, NULL); |
85 | async_wait_for(req, NULL); |
84 | async_serialize_end(); |
86 | async_serialize_end(); |
85 | futex_up(&vfs_phone_futex); |
87 | futex_up(&vfs_phone_futex); |
86 | return (int) rc; |
88 | return (int) rc; |
87 | } |
89 | } |
88 | async_wait_for(req, &rc); |
90 | async_wait_for(req, &rc); |
89 | async_serialize_end(); |
91 | async_serialize_end(); |
90 | futex_up(&vfs_phone_futex); |
92 | futex_up(&vfs_phone_futex); |
91 | return (int) rc; |
93 | return (int) rc; |
92 | } |
94 | } |
93 | 95 | ||
94 | 96 | ||
95 | int open(const char *name, int oflag, ...) |
97 | int open(const char *name, int oflag, ...) |
96 | { |
98 | { |
97 | int res; |
99 | int res; |
98 | ipcarg_t rc; |
100 | ipcarg_t rc; |
99 | ipc_call_t answer; |
101 | ipc_call_t answer; |
100 | aid_t req; |
102 | aid_t req; |
101 | 103 | ||
102 | futex_down(&vfs_phone_futex); |
104 | futex_down(&vfs_phone_futex); |
103 | async_serialize_start(); |
105 | async_serialize_start(); |
104 | if (vfs_phone < 0) { |
106 | if (vfs_phone < 0) { |
105 | res = vfs_connect(); |
107 | res = vfs_connect(); |
106 | if (res < 0) { |
108 | if (res < 0) { |
107 | async_serialize_end(); |
109 | async_serialize_end(); |
108 | futex_up(&vfs_phone_futex); |
110 | futex_up(&vfs_phone_futex); |
109 | return res; |
111 | return res; |
110 | } |
112 | } |
111 | } |
113 | } |
112 | req = async_send_2(vfs_phone, VFS_OPEN, oflag, 0, &answer); |
114 | req = async_send_2(vfs_phone, VFS_OPEN, oflag, 0, &answer); |
113 | rc = ipc_data_write_send(vfs_phone, name, strlen(name)); |
115 | rc = ipc_data_write_send(vfs_phone, name, strlen(name)); |
114 | if (rc != EOK) { |
116 | if (rc != EOK) { |
115 | async_wait_for(req, NULL); |
117 | async_wait_for(req, NULL); |
116 | async_serialize_end(); |
118 | async_serialize_end(); |
117 | futex_up(&vfs_phone_futex); |
119 | futex_up(&vfs_phone_futex); |
118 | return (int) rc; |
120 | return (int) rc; |
119 | } |
121 | } |
120 | async_wait_for(req, &rc); |
122 | async_wait_for(req, &rc); |
121 | async_serialize_end(); |
123 | async_serialize_end(); |
122 | futex_up(&vfs_phone_futex); |
124 | futex_up(&vfs_phone_futex); |
123 | return (int) IPC_GET_ARG1(answer); |
125 | return (int) IPC_GET_ARG1(answer); |
124 | } |
126 | } |
125 | 127 | ||
126 | ssize_t read(int fildes, void *buf, size_t nbyte) |
128 | ssize_t read(int fildes, void *buf, size_t nbyte) |
127 | { |
129 | { |
128 | int res; |
130 | int res; |
129 | ipcarg_t rc; |
131 | ipcarg_t rc; |
130 | ipc_call_t answer; |
132 | ipc_call_t answer; |
131 | aid_t req; |
133 | aid_t req; |
132 | 134 | ||
133 | futex_down(&vfs_phone_futex); |
135 | futex_down(&vfs_phone_futex); |
134 | async_serialize_start(); |
136 | async_serialize_start(); |
135 | if (vfs_phone < 0) { |
137 | if (vfs_phone < 0) { |
136 | res = vfs_connect(); |
138 | res = vfs_connect(); |
137 | if (res < 0) { |
139 | if (res < 0) { |
138 | async_serialize_end(); |
140 | async_serialize_end(); |
139 | futex_up(&vfs_phone_futex); |
141 | futex_up(&vfs_phone_futex); |
140 | return res; |
142 | return res; |
141 | } |
143 | } |
142 | } |
144 | } |
143 | req = async_send_1(vfs_phone, VFS_READ, 0, &answer); |
145 | req = async_send_1(vfs_phone, VFS_READ, fildes, &answer); |
144 | if (ipc_data_read_send(vfs_phone, buf, sizeof(buf)) != EOK) { |
146 | if (ipc_data_read_send(vfs_phone, buf, sizeof(buf)) != EOK) { |
145 | async_wait_for(req, NULL); |
147 | async_wait_for(req, NULL); |
146 | async_serialize_end(); |
148 | async_serialize_end(); |
147 | futex_up(&vfs_phone_futex); |
149 | futex_up(&vfs_phone_futex); |
148 | return (ssize_t) rc; |
150 | return (ssize_t) rc; |
149 | } |
151 | } |
150 | async_wait_for(req, &rc); |
152 | async_wait_for(req, &rc); |
151 | async_serialize_end(); |
153 | async_serialize_end(); |
152 | futex_up(&vfs_phone_futex); |
154 | futex_up(&vfs_phone_futex); |
153 | return (ssize_t) IPC_GET_ARG1(answer); |
155 | return (ssize_t) IPC_GET_ARG1(answer); |
154 | } |
156 | } |
155 | 157 | ||
- | 158 | ssize_t write(int fildes, const void *buf, size_t nbyte) |
|
- | 159 | { |
|
- | 160 | int res; |
|
- | 161 | ipcarg_t rc; |
|
- | 162 | ipc_call_t answer; |
|
- | 163 | aid_t req; |
|
- | 164 | ||
- | 165 | futex_down(&vfs_phone_futex); |
|
- | 166 | async_serialize_start(); |
|
- | 167 | if (vfs_phone < 0) { |
|
- | 168 | res = vfs_connect(); |
|
- | 169 | if (res < 0) { |
|
- | 170 | async_serialize_end(); |
|
- | 171 | futex_up(&vfs_phone_futex); |
|
- | 172 | return res; |
|
- | 173 | } |
|
- | 174 | } |
|
- | 175 | req = async_send_1(vfs_phone, VFS_WRITE, fildes, &answer); |
|
- | 176 | if (ipc_data_write_send(vfs_phone, buf, sizeof(buf)) != EOK) { |
|
- | 177 | async_wait_for(req, NULL); |
|
- | 178 | async_serialize_end(); |
|
- | 179 | futex_up(&vfs_phone_futex); |
|
- | 180 | return (ssize_t) rc; |
|
- | 181 | } |
|
- | 182 | async_wait_for(req, &rc); |
|
- | 183 | async_serialize_end(); |
|
- | 184 | futex_up(&vfs_phone_futex); |
|
- | 185 | return (ssize_t) IPC_GET_ARG1(answer); |
|
- | 186 | } |
|
156 | /** @} |
187 | /** @} |
157 | */ |
188 | */ |
158 | 189 |