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Line 28... Line 28...
28
 
28
 
29
/** @addtogroup libc
29
/** @addtogroup libc
30
 * @{
30
 * @{
31
 */
31
 */
32
/** @file
32
/** @file
33
 */
33
 */
34
 
34
 
35
#include <ipc/ipc.h>
35
#include <ipc/ipc.h>
36
#include <ipc/loader.h>
36
#include <ipc/loader.h>
37
#include <ipc/services.h>
37
#include <ipc/services.h>
38
#include <libc.h>
38
#include <libc.h>
Line 45... Line 45...
45
#include <loader/loader.h>
45
#include <loader/loader.h>
46
 
46
 
47
/** Connect to a new program loader.
47
/** Connect to a new program loader.
48
 *
48
 *
49
 * Spawns a new program loader task and returns the connection structure.
49
 * Spawns a new program loader task and returns the connection structure.
-
 
50
 *
50
 * @param name  Symbolic name to set on the newly created task.
51
 * @param name Symbolic name to set on the newly created task.
-
 
52
 *
51
 * @return  Pointer to the loader connection structure (should be
53
 * @return Pointer to the loader connection structure (should be
52
 *      de-allocated using free() after use).
54
 *         deallocated using free() after use).
-
 
55
 *
53
 */
56
 */
54
int loader_spawn(const char *name)
57
int loader_spawn(const char *name)
55
{
58
{
56
    return __SYSCALL2(SYS_PROGRAM_SPAWN_LOADER,
59
    return __SYSCALL2(SYS_PROGRAM_SPAWN_LOADER,
57
        (sysarg_t) name, str_size(name));
60
        (sysarg_t) name, str_size(name));
58
}
61
}
59
 
62
 
60
loader_t *loader_connect(void)
63
loader_t *loader_connect(void)
61
{
64
{
62
    loader_t *ldr;
-
 
63
    int phone_id;
-
 
64
 
-
 
65
    phone_id = ipc_connect_me_to_blocking(PHONE_NS, SERVICE_LOAD, 0, 0);
65
    int phone_id = ipc_connect_me_to_blocking(PHONE_NS, SERVICE_LOAD, 0, 0);
66
    if (phone_id < 0)
66
    if (phone_id < 0)
67
        return NULL;
67
        return NULL;
68
 
68
   
69
    ldr = malloc(sizeof(loader_t));
69
    loader_t *ldr = malloc(sizeof(loader_t));
70
    if (ldr == NULL)
70
    if (ldr == NULL)
71
        return NULL;
71
        return NULL;
72
 
72
   
73
    ldr->phone_id = phone_id;
73
    ldr->phone_id = phone_id;
74
    return ldr;
74
    return ldr;
75
}
75
}
76
 
76
 
77
/** Get ID of the new task.
77
/** Get ID of the new task.
78
 *
78
 *
79
 * Retrieves the ID of the new task from the loader.
79
 * Retrieves the ID of the new task from the loader.
80
 *
80
 *
81
 * @param ldr       Loader connection structure.
81
 * @param ldr     Loader connection structure.
82
 * @param task_id   Points to a variable where the ID should be stored.
82
 * @param task_id Points to a variable where the ID should be stored.
-
 
83
 *
83
 * @return      Zero on success or negative error code.
84
 * @return Zero on success or negative error code.
-
 
85
 *
84
 */
86
 */
85
int loader_get_task_id(loader_t *ldr, task_id_t *task_id)
87
int loader_get_task_id(loader_t *ldr, task_id_t *task_id)
86
{
88
{
87
    ipc_call_t answer;
-
 
88
    aid_t req;
-
 
89
    int rc;
-
 
90
    ipcarg_t retval;
-
 
91
 
-
 
92
    /* Get task ID. */
89
    /* Get task ID. */
-
 
90
    ipc_call_t answer;
93
    req = async_send_0(ldr->phone_id, LOADER_GET_TASKID, &answer);
91
    aid_t req = async_send_0(ldr->phone_id, LOADER_GET_TASKID, &answer);
94
    rc = ipc_data_read_start(ldr->phone_id, task_id, sizeof(task_id_t));
92
    int rc = ipc_data_read_start(ldr->phone_id, task_id, sizeof(task_id_t));
95
    if (rc != EOK) {
93
    if (rc != EOK) {
96
        async_wait_for(req, NULL);
94
        async_wait_for(req, NULL);
97
        return rc;
95
        return rc;
98
    }
96
    }
99
 
97
   
-
 
98
    ipcarg_t retval;
100
    async_wait_for(req, &retval);
99
    async_wait_for(req, &retval);
101
    return (int)retval;
100
    return (int) retval;
102
}
101
}
103
 
102
 
104
/** Set pathname of the program to load.
103
/** Set pathname of the program to load.
105
 *
104
 *
106
 * Sets the name of the program file to load. The name can be relative
105
 * Sets the name of the program file to load. The name can be relative
107
 * to the current working directory (it will be absolutized before
106
 * to the current working directory (it will be absolutized before
108
 * sending to the loader).
107
 * sending to the loader).
109
 *
108
 *
110
 * @param ldr       Loader connection structure.
109
 * @param ldr  Loader connection structure.
111
 * @param path      Pathname of the program file.
110
 * @param path Pathname of the program file.
-
 
111
 *
112
 * @return      Zero on success or negative error code.
112
 * @return Zero on success or negative error code.
-
 
113
 *
113
 */
114
 */
114
int loader_set_pathname(loader_t *ldr, const char *path)
115
int loader_set_pathname(loader_t *ldr, const char *path)
115
{
116
{
116
    ipc_call_t answer;
-
 
117
    aid_t req;
-
 
118
    int rc;
-
 
119
    ipcarg_t retval;
-
 
120
 
-
 
121
    char *pa;
-
 
122
    size_t pa_len;
117
    size_t pa_len;
123
 
-
 
124
    pa = absolutize(path, &pa_len);
118
    char *pa = absolutize(path, &pa_len);
125
    if (!pa)
119
    if (!pa)
126
        return 0;
120
        return 0;
127
 
121
   
128
    /* Send program pathname */
122
    /* Send program pathname */
-
 
123
    ipc_call_t answer;
129
    req = async_send_0(ldr->phone_id, LOADER_SET_PATHNAME, &answer);
124
    aid_t req = async_send_0(ldr->phone_id, LOADER_SET_PATHNAME, &answer);
130
    rc = ipc_data_write_start(ldr->phone_id, (void *)pa, pa_len);
125
    int rc = ipc_data_write_start(ldr->phone_id, (void *) pa, pa_len);
131
    if (rc != EOK) {
126
    if (rc != EOK) {
132
        async_wait_for(req, NULL);
127
        async_wait_for(req, NULL);
133
        return rc;
128
        return rc;
134
    }
129
    }
135
 
130
   
136
    free(pa);
131
    free(pa);
137
 
132
   
-
 
133
    ipcarg_t retval;
138
    async_wait_for(req, &retval);
134
    async_wait_for(req, &retval);
139
    return (int)retval;
135
    return (int) retval;
140
}
136
}
141
 
137
 
142
 
-
 
143
/** Set command-line arguments for the program.
138
/** Set command-line arguments for the program.
144
 *
139
 *
145
 * Sets the vector of command-line arguments to be passed to the loaded
140
 * Sets the vector of command-line arguments to be passed to the loaded
146
 * program. By convention, the very first argument is typically the same as
141
 * program. By convention, the very first argument is typically the same as
147
 * the command used to execute the program.
142
 * the command used to execute the program.
148
 *
143
 *
149
 * @param ldr       Loader connection structure.
144
 * @param ldr  Loader connection structure.
150
 * @param argv      NULL-terminated array of pointers to arguments.
145
 * @param argv NULL-terminated array of pointers to arguments.
-
 
146
 *
151
 * @return      Zero on success or negative error code.
147
 * @return Zero on success or negative error code.
-
 
148
 *
152
 */
149
 */
153
int loader_set_args(loader_t *ldr, char *const argv[])
150
int loader_set_args(loader_t *ldr, char *const argv[])
154
{
151
{
155
    aid_t req;
-
 
156
    ipc_call_t answer;
-
 
157
    ipcarg_t rc;
-
 
158
 
-
 
159
    char *const *ap;
-
 
160
    char *dp;
-
 
161
    char *arg_buf;
-
 
162
    size_t buffer_size;
-
 
163
 
-
 
164
    /*
152
    /*
165
     * Serialize the arguments into a single array. First
153
     * Serialize the arguments into a single array. First
166
     * compute size of the buffer needed.
154
     * compute size of the buffer needed.
167
     */
155
     */
168
    ap = argv;
156
    char *const *ap = argv;
169
    buffer_size = 0;
157
    size_t buffer_size = 0;
170
    while (*ap != NULL) {
158
    while (*ap != NULL) {
171
        buffer_size += str_size(*ap) + 1;
159
        buffer_size += str_size(*ap) + 1;
172
        ++ap;
160
        ap++;
173
    }
161
    }
174
 
162
   
175
    arg_buf = malloc(buffer_size);
163
    char *arg_buf = malloc(buffer_size);
176
    if (arg_buf == NULL) return ENOMEM;
164
    if (arg_buf == NULL)
-
 
165
        return ENOMEM;
177
 
166
   
178
    /* Now fill the buffer with null-terminated argument strings */
167
    /* Now fill the buffer with null-terminated argument strings */
179
    ap = argv;
168
    ap = argv;
180
    dp = arg_buf;
169
    char *dp = arg_buf;
181
 
170
   
182
    while (*ap != NULL) {
171
    while (*ap != NULL) {
183
        str_cpy(dp, buffer_size - (dp - arg_buf), *ap);
172
        str_cpy(dp, buffer_size - (dp - arg_buf), *ap);
184
        dp += str_size(*ap) + 1;
173
        dp += str_size(*ap) + 1;
185
 
-
 
186
        ++ap;
174
        ap++;
187
    }
175
    }
188
 
176
   
189
    /* Send serialized arguments to the loader */
177
    /* Send serialized arguments to the loader */
190
 
-
 
-
 
178
    ipc_call_t answer;
191
    req = async_send_0(ldr->phone_id, LOADER_SET_ARGS, &answer);
179
    aid_t req = async_send_0(ldr->phone_id, LOADER_SET_ARGS, &answer);
192
    rc = ipc_data_write_start(ldr->phone_id, (void *)arg_buf, buffer_size);
180
    ipcarg_t rc = ipc_data_write_start(ldr->phone_id, (void *) arg_buf, buffer_size);
193
    if (rc != EOK) {
181
    if (rc != EOK) {
194
        async_wait_for(req, NULL);
182
        async_wait_for(req, NULL);
195
        return rc;
183
        return rc;
196
    }
184
    }
197
 
185
   
198
    async_wait_for(req, &rc);
186
    async_wait_for(req, &rc);
199
    if (rc != EOK) return rc;
187
    if (rc != EOK)
-
 
188
        return rc;
200
 
189
   
201
    /* Free temporary buffer */
190
    /* Free temporary buffer */
202
    free(arg_buf);
191
    free(arg_buf);
-
 
192
   
-
 
193
    return EOK;
-
 
194
}
203
 
195
 
-
 
196
/** Set preset files for the program.
-
 
197
 *
-
 
198
 * Sets the vector of preset files to be passed to the loaded
-
 
199
 * program. By convention, the first three files represent stdin,
-
 
200
 * stdout and stderr respectively.
-
 
201
 *
-
 
202
 * @param ldr   Loader connection structure.
-
 
203
 * @param files NULL-terminated array of pointers to files.
-
 
204
 *
-
 
205
 * @return Zero on success or negative error code.
-
 
206
 *
-
 
207
 */
-
 
208
int loader_set_files(loader_t *ldr, fdi_node_t *const files[])
-
 
209
{
-
 
210
    /*
-
 
211
     * Serialize the arguments into a single array. First
-
 
212
     * compute size of the buffer needed.
-
 
213
     */
-
 
214
    fdi_node_t *const *ap = files;
-
 
215
    size_t count = 0;
-
 
216
    while (*ap != NULL) {
-
 
217
        count++;
-
 
218
        ap++;
-
 
219
    }
-
 
220
   
-
 
221
    fdi_node_t *files_buf;
-
 
222
    files_buf = (fdi_node_t *) malloc(count * sizeof(fdi_node_t));
-
 
223
    if (files_buf == NULL)
-
 
224
        return ENOMEM;
-
 
225
   
-
 
226
    /* Fill the buffer */
-
 
227
    size_t i;
-
 
228
    for (i = 0; i < count; i++)
-
 
229
        files_buf[i] = *files[i];
-
 
230
   
-
 
231
    /* Send serialized files to the loader */
-
 
232
    ipc_call_t answer;
-
 
233
    aid_t req = async_send_0(ldr->phone_id, LOADER_SET_FILES, &answer);
-
 
234
    ipcarg_t rc = ipc_data_write_start(ldr->phone_id, (void *) files_buf,
-
 
235
        count * sizeof(fdi_node_t));
-
 
236
    if (rc != EOK) {
-
 
237
        async_wait_for(req, NULL);
-
 
238
        return rc;
-
 
239
    }
-
 
240
   
-
 
241
    async_wait_for(req, &rc);
-
 
242
    if (rc != EOK)
-
 
243
        return rc;
-
 
244
   
-
 
245
    /* Free temporary buffer */
-
 
246
    free(files_buf);
-
 
247
   
204
    return EOK;
248
    return EOK;
205
}
249
}
206
 
250
 
207
/** Instruct loader to load the program.
251
/** Instruct loader to load the program.
208
 *
252
 *
209
 * If this function succeeds, the program has been successfully loaded
253
 * If this function succeeds, the program has been successfully loaded
210
 * and is ready to be executed.
254
 * and is ready to be executed.
211
 *
255
 *
212
 * @param ldr       Loader connection structure.
256
 * @param ldr Loader connection structure.
-
 
257
 *
213
 * @return      Zero on success or negative error code.
258
 * @return Zero on success or negative error code.
-
 
259
 *
214
 */
260
 */
215
int loader_load_program(loader_t *ldr)
261
int loader_load_program(loader_t *ldr)
216
{
262
{
217
    int rc;
-
 
218
 
-
 
219
    rc = async_req_0_0(ldr->phone_id, LOADER_LOAD);
263
    return (int) async_req_0_0(ldr->phone_id, LOADER_LOAD);
220
    if (rc != EOK)
-
 
221
        return rc;
-
 
222
 
-
 
223
    return EOK;
-
 
224
}
264
}
225
 
265
 
226
/** Instruct loader to execute the program.
266
/** Instruct loader to execute the program.
227
 *
267
 *
228
 * Note that this function blocks until the loader actually replies
268
 * Note that this function blocks until the loader actually replies
Line 230... Line 270...
230
 * the task and its thread is stopped.
270
 * the task and its thread is stopped.
231
 *
271
 *
232
 * After using this function, no further operations must be performed
272
 * After using this function, no further operations must be performed
233
 * on the loader structure. It should be de-allocated using free().
273
 * on the loader structure. It should be de-allocated using free().
234
 *
274
 *
235
 * @param ldr       Loader connection structure.
275
 * @param ldr Loader connection structure.
-
 
276
 *
236
 * @return      Zero on success or negative error code.
277
 * @return Zero on success or negative error code.
-
 
278
 *
237
 */
279
 */
238
int loader_run(loader_t *ldr)
280
int loader_run(loader_t *ldr)
239
{
281
{
240
    int rc;
-
 
241
 
-
 
242
    rc = async_req_0_0(ldr->phone_id, LOADER_RUN);
282
    int rc = async_req_0_0(ldr->phone_id, LOADER_RUN);
243
    if (rc != EOK)
283
    if (rc != EOK)
244
        return rc;
284
        return rc;
245
 
285
   
246
    ipc_hangup(ldr->phone_id);
286
    ipc_hangup(ldr->phone_id);
247
    ldr->phone_id = 0;
287
    ldr->phone_id = 0;
248
    return EOK;
288
    return EOK;
249
}
289
}
250
 
290
 
Line 252... Line 292...
252
 *
292
 *
253
 * Tells the loader not to load any program and terminate.
293
 * Tells the loader not to load any program and terminate.
254
 * After using this function, no further operations must be performed
294
 * After using this function, no further operations must be performed
255
 * on the loader structure. It should be de-allocated using free().
295
 * on the loader structure. It should be de-allocated using free().
256
 *
296
 *
257
 * @param ldr       Loader connection structure.
297
 * @param ldr Loader connection structure.
-
 
298
 *
258
 * @return      Zero on success or negative error code.
299
 * @return Zero on success or negative error code.
-
 
300
 *
259
 */
301
 */
260
void loader_abort(loader_t *ldr)
302
void loader_abort(loader_t *ldr)
261
{
303
{
262
    ipc_hangup(ldr->phone_id);
304
    ipc_hangup(ldr->phone_id);
263
    ldr->phone_id = 0;
305
    ldr->phone_id = 0;