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1 | /* |
1 | /* |
2 | * Copyright (c) 2006 Jakub Jermar |
2 | * Copyright (c) 2006 Jakub Jermar |
3 | * Copyright (c) 2008 Jiri Svoboda |
3 | * Copyright (c) 2008 Jiri Svoboda |
4 | * All rights reserved. |
4 | * All rights reserved. |
5 | * |
5 | * |
6 | * Redistribution and use in source and binary forms, with or without |
6 | * Redistribution and use in source and binary forms, with or without |
7 | * modification, are permitted provided that the following conditions |
7 | * modification, are permitted provided that the following conditions |
8 | * are met: |
8 | * are met: |
9 | * |
9 | * |
10 | * - Redistributions of source code must retain the above copyright |
10 | * - Redistributions of source code must retain the above copyright |
11 | * notice, this list of conditions and the following disclaimer. |
11 | * notice, this list of conditions and the following disclaimer. |
12 | * - Redistributions in binary form must reproduce the above copyright |
12 | * - Redistributions in binary form must reproduce the above copyright |
13 | * notice, this list of conditions and the following disclaimer in the |
13 | * notice, this list of conditions and the following disclaimer in the |
14 | * documentation and/or other materials provided with the distribution. |
14 | * documentation and/or other materials provided with the distribution. |
15 | * - The name of the author may not be used to endorse or promote products |
15 | * - The name of the author may not be used to endorse or promote products |
16 | * derived from this software without specific prior written permission. |
16 | * derived from this software without specific prior written permission. |
17 | * |
17 | * |
18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
19 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
20 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
23 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
27 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
28 | */ |
28 | */ |
29 | 29 | ||
30 | /** @addtogroup libc |
30 | /** @addtogroup libc |
31 | * @{ |
31 | * @{ |
32 | */ |
32 | */ |
33 | /** @file |
33 | /** @file |
34 | */ |
34 | */ |
35 | 35 | ||
36 | #include <task.h> |
36 | #include <task.h> |
37 | #include <ipc/ipc.h> |
37 | #include <ipc/ipc.h> |
38 | #include <ipc/loader.h> |
38 | #include <ipc/loader.h> |
39 | #include <libc.h> |
39 | #include <libc.h> |
40 | #include <string.h> |
40 | #include <string.h> |
41 | #include <stdlib.h> |
41 | #include <stdlib.h> |
42 | #include <async.h> |
42 | #include <async.h> |
43 | #include <errno.h> |
43 | #include <errno.h> |
44 | 44 | ||
45 | task_id_t task_get_id(void) |
45 | task_id_t task_get_id(void) |
46 | { |
46 | { |
47 | task_id_t task_id; |
47 | task_id_t task_id; |
48 | 48 | ||
49 | (void) __SYSCALL1(SYS_TASK_GET_ID, (sysarg_t) &task_id); |
49 | (void) __SYSCALL1(SYS_TASK_GET_ID, (sysarg_t) &task_id); |
50 | 50 | ||
51 | return task_id; |
51 | return task_id; |
52 | } |
52 | } |
53 | 53 | ||
54 | static int task_spawn_loader(void) |
54 | static int task_spawn_loader(void) |
55 | { |
55 | { |
56 | int phone_id, rc; |
56 | int phone_id, rc; |
57 | 57 | ||
58 | rc = __SYSCALL1(SYS_PROGRAM_SPAWN_LOADER, (sysarg_t) &phone_id); |
58 | rc = __SYSCALL1(SYS_PROGRAM_SPAWN_LOADER, (sysarg_t) &phone_id); |
59 | if (rc != 0) |
59 | if (rc != 0) |
60 | return rc; |
60 | return rc; |
61 | 61 | ||
62 | return phone_id; |
62 | return phone_id; |
63 | } |
63 | } |
64 | 64 | ||
65 | static int loader_set_args(int phone_id, const char *argv[]) |
65 | static int loader_set_args(int phone_id, const char *argv[]) |
66 | { |
66 | { |
67 | aid_t req; |
67 | aid_t req; |
68 | ipc_call_t answer; |
68 | ipc_call_t answer; |
69 | ipcarg_t rc; |
69 | ipcarg_t rc; |
70 | 70 | ||
71 | const char **ap; |
71 | const char **ap; |
72 | char *dp; |
72 | char *dp; |
73 | char *arg_buf; |
73 | char *arg_buf; |
74 | size_t buffer_size; |
74 | size_t buffer_size; |
75 | size_t len; |
75 | size_t len; |
76 | 76 | ||
77 | /* |
77 | /* |
78 | * Serialize the arguments into a single array. First |
78 | * Serialize the arguments into a single array. First |
79 | * compute size of the buffer needed. |
79 | * compute size of the buffer needed. |
80 | */ |
80 | */ |
81 | ap = argv; |
81 | ap = argv; |
82 | buffer_size = 0; |
82 | buffer_size = 0; |
83 | while (*ap != NULL) { |
83 | while (*ap != NULL) { |
84 | buffer_size += strlen(*ap) + 1; |
84 | buffer_size += strlen(*ap) + 1; |
85 | ++ap; |
85 | ++ap; |
86 | } |
86 | } |
87 | 87 | ||
88 | arg_buf = malloc(buffer_size); |
88 | arg_buf = malloc(buffer_size); |
89 | if (arg_buf == NULL) return ENOMEM; |
89 | if (arg_buf == NULL) return ENOMEM; |
90 | 90 | ||
91 | /* Now fill the buffer with null-terminated argument strings */ |
91 | /* Now fill the buffer with null-terminated argument strings */ |
92 | ap = argv; |
92 | ap = argv; |
93 | dp = arg_buf; |
93 | dp = arg_buf; |
94 | while (*ap != NULL) { |
94 | while (*ap != NULL) { |
95 | strcpy(dp, *ap); |
95 | strcpy(dp, *ap); |
96 | dp += strlen(*ap) + 1; |
96 | dp += strlen(*ap) + 1; |
97 | 97 | ||
98 | ++ap; |
98 | ++ap; |
99 | } |
99 | } |
100 | 100 | ||
101 | /* Send serialized arguments to the loader */ |
101 | /* Send serialized arguments to the loader */ |
102 | 102 | ||
103 | req = async_send_0(phone_id, LOADER_SET_ARGS, &answer); |
103 | req = async_send_0(phone_id, LOADER_SET_ARGS, &answer); |
104 | rc = ipc_data_write_start(phone_id, (void *)arg_buf, buffer_size); |
104 | rc = ipc_data_write_start(phone_id, (void *)arg_buf, buffer_size); |
105 | if (rc != EOK) { |
105 | if (rc != EOK) { |
106 | async_wait_for(req, NULL); |
106 | async_wait_for(req, NULL); |
107 | return rc; |
107 | return rc; |
108 | } |
108 | } |
109 | 109 | ||
110 | async_wait_for(req, &rc); |
110 | async_wait_for(req, &rc); |
111 | if (rc != EOK) return rc; |
111 | if (rc != EOK) return rc; |
112 | 112 | ||
113 | /* Free temporary buffer */ |
113 | /* Free temporary buffer */ |
114 | free(arg_buf); |
114 | free(arg_buf); |
115 | 115 | ||
116 | return EOK; |
116 | return EOK; |
117 | } |
117 | } |
118 | 118 | ||
119 | /** Create a new task by running an executable from VFS. |
119 | /** Create a new task by running an executable from VFS. |
120 | * |
120 | * |
121 | * @param path pathname of the binary to execute |
121 | * @param path pathname of the binary to execute |
122 | * @param argv command-line arguments |
122 | * @param argv command-line arguments |
123 | * @return ID of the newly created task or zero on error. |
123 | * @return ID of the newly created task or zero on error. |
124 | */ |
124 | */ |
125 | task_id_t task_spawn(const char *path, const char *argv[]) |
125 | task_id_t task_spawn(const char *path, const char *argv[]) |
126 | { |
126 | { |
127 | int phone_id; |
127 | int phone_id; |
128 | ipc_call_t answer; |
128 | ipc_call_t answer; |
129 | aid_t req; |
129 | aid_t req; |
130 | int rc; |
130 | int rc; |
- | 131 | ipcarg_t retval; |
|
131 | 132 | ||
132 | /* Spawn a program loader */ |
133 | /* Spawn a program loader */ |
133 | phone_id = task_spawn_loader(); |
134 | phone_id = task_spawn_loader(); |
134 | if (phone_id < 0) return 0; |
135 | if (phone_id < 0) return 0; |
135 | 136 | ||
136 | /* |
137 | /* |
137 | * Say hello so that the loader knows the incoming connection's |
138 | * Say hello so that the loader knows the incoming connection's |
138 | * phone hash. |
139 | * phone hash. |
139 | */ |
140 | */ |
140 | rc = async_req_0_0(phone_id, LOADER_HELLO); |
141 | rc = async_req_0_0(phone_id, LOADER_HELLO); |
141 | if (rc != EOK) return 0; |
142 | if (rc != EOK) return 0; |
142 | 143 | ||
143 | /* Send program pathname */ |
144 | /* Send program pathname */ |
144 | req = async_send_0(phone_id, LOADER_SET_PATHNAME, &answer); |
145 | req = async_send_0(phone_id, LOADER_SET_PATHNAME, &answer); |
145 | rc = ipc_data_write_start(phone_id, (void *)path, strlen(path)); |
146 | rc = ipc_data_write_start(phone_id, (void *)path, strlen(path)); |
146 | if (rc != EOK) { |
147 | if (rc != EOK) { |
147 | async_wait_for(req, NULL); |
148 | async_wait_for(req, NULL); |
148 | return 1; |
149 | return 1; |
149 | } |
150 | } |
150 | 151 | ||
151 | async_wait_for(req, &rc); |
152 | async_wait_for(req, &retval); |
152 | if (rc != EOK) goto error; |
153 | if (retval != EOK) goto error; |
153 | 154 | ||
154 | /* Send arguments */ |
155 | /* Send arguments */ |
155 | rc = loader_set_args(phone_id, argv); |
156 | rc = loader_set_args(phone_id, argv); |
156 | if (rc != EOK) goto error; |
157 | if (rc != EOK) goto error; |
157 | 158 | ||
158 | /* Request loader to start the program */ |
159 | /* Request loader to start the program */ |
159 | rc = async_req_0_0(phone_id, LOADER_RUN); |
160 | rc = async_req_0_0(phone_id, LOADER_RUN); |
160 | if (rc != EOK) goto error; |
161 | if (rc != EOK) goto error; |
161 | 162 | ||
162 | /* Success */ |
163 | /* Success */ |
163 | ipc_hangup(phone_id); |
164 | ipc_hangup(phone_id); |
164 | return 1; |
165 | return 1; |
165 | 166 | ||
166 | /* Error exit */ |
167 | /* Error exit */ |
167 | error: |
168 | error: |
168 | ipc_hangup(phone_id); |
169 | ipc_hangup(phone_id); |
169 | return 0; |
170 | return 0; |
170 | } |
171 | } |
171 | 172 | ||
172 | /** @} |
173 | /** @} |
173 | */ |
174 | */ |
174 | 175 |