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1 | /* |
1 | /* |
2 | * Copyright (c) 2008 Jiri Svoboda |
2 | * Copyright (c) 2008 Jiri Svoboda |
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 loader |
29 | /** @addtogroup loader |
30 | * @brief Loads and runs programs from VFS. |
30 | * @brief Loads and runs programs from VFS. |
31 | * @{ |
31 | * @{ |
32 | */ |
32 | */ |
33 | /** |
33 | /** |
34 | * @file |
34 | * @file |
35 | * @brief Loads and runs programs from VFS. |
35 | * @brief Loads and runs programs from VFS. |
36 | * |
36 | * |
37 | * The program loader is a special init binary. Its image is used |
37 | * The program loader is a special init binary. Its image is used |
38 | * to create a new task upon a @c task_spawn syscall. The syscall |
38 | * to create a new task upon a @c task_spawn syscall. The syscall |
39 | * returns the id of a phone connected to the newly created task. |
39 | * returns the id of a phone connected to the newly created task. |
40 | * |
40 | * |
41 | * The caller uses this phone to send the pathname and various other |
41 | * The caller uses this phone to send the pathname and various other |
42 | * information to the loader. This is normally done by the C library |
42 | * information to the loader. This is normally done by the C library |
43 | * and completely hidden from applications. |
43 | * and completely hidden from applications. |
44 | */ |
44 | */ |
45 | 45 | ||
46 | #include <stdio.h> |
46 | #include <stdio.h> |
47 | #include <stdlib.h> |
47 | #include <stdlib.h> |
48 | #include <unistd.h> |
48 | #include <unistd.h> |
49 | #include <fcntl.h> |
49 | #include <fcntl.h> |
50 | #include <sys/types.h> |
50 | #include <sys/types.h> |
51 | #include <ipc/ipc.h> |
51 | #include <ipc/ipc.h> |
- | 52 | #include <ipc/loader.h> |
|
52 | #include <errno.h> |
53 | #include <errno.h> |
- | 54 | #include <async.h> |
|
53 | #include <as.h> |
55 | #include <as.h> |
54 | 56 | ||
55 | #include <elf.h> |
57 | #include <elf.h> |
56 | #include <elf_load.h> |
58 | #include <elf_load.h> |
57 | #include <pcb.h> |
59 | #include <pcb.h> |
58 | 60 | ||
59 | /** |
61 | /** |
60 | * Bias used for loading the dynamic linker. This will be soon replaced |
62 | * Bias used for loading the dynamic linker. This will be soon replaced |
61 | * by automatic placement. |
63 | * by automatic placement. |
62 | */ |
64 | */ |
63 | #define RTLD_BIAS 0x80000 |
65 | #define RTLD_BIAS 0x80000 |
64 | 66 | ||
65 | /** Pathname of the file that will be loaded */ |
67 | /** Pathname of the file that will be loaded */ |
66 | static char *pathname = NULL; |
68 | static char *pathname = NULL; |
67 | 69 | ||
68 | /** Receive a call setting pathname of the program to execute. |
70 | /** Receive a call setting pathname of the program to execute. |
69 | * |
71 | * |
70 | * @param rid |
72 | * @param rid |
71 | * @param request |
73 | * @param request |
72 | */ |
74 | */ |
73 | void iloader_set_pathname(ipc_callid_t rid, ipc_call_t *request) |
75 | static void iloader_set_pathname(ipc_callid_t rid, ipc_call_t *request) |
74 | { |
76 | { |
75 | // ipc_callid_t callid; |
77 | ipc_callid_t callid; |
76 | size_t len; |
78 | size_t len; |
77 | char *name_buf; |
79 | char *name_buf; |
78 | 80 | ||
79 | /* printf("iloader_set_pathname\n"); |
81 | printf("iloader_set_pathname\n"); |
80 | if (!ipc_data_write_receive(&callid, &len)) { |
82 | if (!ipc_data_write_receive(&callid, &len)) { |
81 | ipc_answer_0(callid, EINVAL); |
83 | ipc_answer_0(callid, EINVAL); |
82 | ipc_answer_0(rid, EINVAL); |
84 | ipc_answer_0(rid, EINVAL); |
83 | return; |
85 | return; |
84 | } |
86 | } |
85 | */ |
87 | |
86 | len = IPC_GET_ARG2(*request); |
- | |
87 | printf("alloc %d bytes\n", len+1); |
88 | printf("alloc %d bytes\n", len+1); |
88 | 89 | ||
89 | name_buf = malloc(len + 1); |
90 | name_buf = malloc(len + 1); |
90 | if (!name_buf) { |
91 | if (!name_buf) { |
91 | // ipc_answer_0(callid, ENOMEM); |
92 | ipc_answer_0(callid, ENOMEM); |
92 | ipc_answer_0(rid, ENOMEM); |
93 | ipc_answer_0(rid, ENOMEM); |
93 | return; |
94 | return; |
94 | } |
95 | } |
95 | 96 | ||
96 | printf("write_finalize\n"); |
97 | printf("write_finalize\n"); |
97 | ipc_data_write_finalize(rid, name_buf, len); |
98 | ipc_data_write_finalize(callid, name_buf, len); |
- | 99 | printf("answer\n"); |
|
98 | // ipc_answer_0(rid, EOK); |
100 | ipc_answer_0(rid, EOK); |
99 | 101 | ||
100 | if (pathname != NULL) { |
102 | if (pathname != NULL) { |
101 | free(pathname); |
103 | free(pathname); |
102 | pathname = NULL; |
104 | pathname = NULL; |
103 | } |
105 | } |
104 | 106 | ||
- | 107 | name_buf[len] = '\0'; |
|
105 | pathname = name_buf; |
108 | pathname = name_buf; |
106 | } |
109 | } |
107 | 110 | ||
108 | /** Load and run the previously selected program. |
111 | /** Load and run the previously selected program. |
109 | * |
112 | * |
110 | * @param rid |
113 | * @param rid |
111 | * @param request |
114 | * @param request |
112 | * @return 0 on success, !0 on error. |
115 | * @return 0 on success, !0 on error. |
113 | */ |
116 | */ |
114 | int iloader_run(ipc_callid_t rid, ipc_call_t *request) |
117 | static int iloader_run(ipc_callid_t rid, ipc_call_t *request) |
115 | { |
118 | { |
116 | int rc; |
119 | int rc; |
117 | pcb_t *pcb; |
120 | pcb_t *pcb; |
118 | 121 | ||
119 | elf_info_t prog_info; |
122 | elf_info_t prog_info; |
120 | elf_info_t interp_info; |
123 | elf_info_t interp_info; |
121 | 124 | ||
122 | printf("Load program '%s'\n", pathname); |
125 | printf("Load program '%s'\n", pathname); |
123 | 126 | ||
124 | rc = elf_load_file(pathname, 0, &prog_info); |
127 | rc = elf_load_file(pathname, 0, &prog_info); |
125 | if (rc < 0) { |
128 | if (rc < 0) { |
126 | printf("failed to load program\n"); |
129 | printf("failed to load program\n"); |
127 | return 1; |
130 | return 1; |
128 | } |
131 | } |
129 | 132 | ||
130 | printf("Create PCB\n"); |
133 | printf("Create PCB\n"); |
131 | if (elf_create_pcb(&prog_info) < 0) return 1; |
134 | if (elf_create_pcb(&prog_info) < 0) return 1; |
132 | 135 | ||
133 | if (prog_info.interp == NULL) { |
136 | if (prog_info.interp == NULL) { |
134 | /* Statically linked program */ |
137 | /* Statically linked program */ |
135 | printf("Run statically linked program\n"); |
138 | printf("Run statically linked program\n"); |
136 | elf_run(&prog_info); |
139 | elf_run(&prog_info); |
137 | return 0; |
140 | return 0; |
138 | } |
141 | } |
139 | 142 | ||
140 | printf("Load dynamic linker '%s'\n", prog_info.interp); |
143 | printf("Load dynamic linker '%s'\n", prog_info.interp); |
141 | rc = elf_load_file("/rtld.so", RTLD_BIAS, &interp_info); |
144 | rc = elf_load_file("/rtld.so", RTLD_BIAS, &interp_info); |
142 | if (rc < 0) { |
145 | if (rc < 0) { |
143 | printf("failed to load dynamic linker\n"); |
146 | printf("failed to load dynamic linker\n"); |
144 | return 1; |
147 | return 1; |
145 | } |
148 | } |
146 | 149 | ||
147 | /* |
150 | /* |
148 | * Provide dynamic linker with some useful data |
151 | * Provide dynamic linker with some useful data |
149 | */ |
152 | */ |
150 | pcb = (pcb_t *)PCB_ADDRESS; |
153 | pcb = (pcb_t *)PCB_ADDRESS; |
151 | pcb->rtld_dynamic = interp_info.dynamic; |
154 | pcb->rtld_dynamic = interp_info.dynamic; |
152 | pcb->rtld_bias = RTLD_BIAS; |
155 | pcb->rtld_bias = RTLD_BIAS; |
153 | 156 | ||
154 | printf("run dynamic linker\n"); |
157 | printf("run dynamic linker\n"); |
155 | elf_run(&interp_info); |
158 | elf_run(&interp_info); |
156 | 159 | ||
157 | return 0; |
160 | return 0; |
158 | } |
161 | } |
159 | 162 | ||
160 | /** Program loader main function. |
163 | /** Handle loader connection. |
161 | * |
164 | * |
162 | * Receive and carry out commands (of which the last one should be |
165 | * Receive and carry out commands (of which the last one should be |
163 | * to execute the loaded program). |
166 | * to execute the loaded program). |
164 | */ |
167 | */ |
165 | int main(int argc, char *argv[]) |
168 | static void loader_connection(ipc_callid_t iid, ipc_call_t *icall) |
166 | { |
169 | { |
167 | ipc_callid_t callid; |
170 | ipc_callid_t callid; |
168 | ipc_call_t call; |
171 | ipc_call_t call; |
169 | int retval; |
172 | int retval; |
- | 173 | ||
- | 174 | /* Ignore parameters, the connection is already open */ |
|
170 | int len; |
175 | (void)iid; (void)icall; |
171 | 176 | ||
172 | while (1) { |
177 | while (1) { |
173 | callid = ipc_wait_for_call(&call); |
178 | callid = async_get_call(&call); |
- | 179 | printf("received call from phone %d, method=%d\n", |
|
174 | printf("received call, method=%d\n", IPC_GET_METHOD(call)); |
180 | call.in_phone_hash, IPC_GET_METHOD(call)); |
175 | switch (IPC_GET_METHOD(call)) { |
181 | switch (IPC_GET_METHOD(call)) { |
176 | case IPC_M_DATA_WRITE: |
182 | case LOADER_SET_PATHNAME: |
177 | iloader_set_pathname(callid, &call); |
183 | iloader_set_pathname(callid, &call); |
- | 184 | continue; |
|
- | 185 | case LOADER_RUN: |
|
178 | iloader_run(callid, &call); |
186 | iloader_run(callid, &call); |
179 | exit(0); |
187 | exit(0); |
180 | continue; |
188 | continue; |
181 | default: |
189 | default: |
182 | retval = ENOENT; |
190 | retval = ENOENT; |
183 | break; |
191 | break; |
184 | } |
192 | } |
185 | if ((callid & IPC_CALLID_NOTIFICATION) == 0) { |
193 | if ((callid & IPC_CALLID_NOTIFICATION) == 0) { |
186 | printf("responding EINVAL to method %d\n", IPC_GET_METHOD(call)); |
194 | printf("responding EINVAL to method %d\n", IPC_GET_METHOD(call)); |
187 | ipc_answer_0(callid, EINVAL); |
195 | ipc_answer_0(callid, EINVAL); |
188 | } |
196 | } |
189 | } |
197 | } |
- | 198 | } |
|
- | 199 | ||
- | 200 | /** Program loader main function. |
|
- | 201 | */ |
|
- | 202 | int main(int argc, char *argv[]) |
|
- | 203 | { |
|
- | 204 | ipc_callid_t callid; |
|
- | 205 | ipc_call_t call; |
|
- | 206 | ipcarg_t phone_hash; |
|
- | 207 | ||
- | 208 | /* The first call only communicates the incoming phone hash */ |
|
- | 209 | callid = ipc_wait_for_call(&call); |
|
- | 210 | ||
- | 211 | if (IPC_GET_METHOD(call) != LOADER_HELLO) { |
|
- | 212 | if (IPC_GET_METHOD(call) != IPC_M_PHONE_HUNGUP) |
|
- | 213 | ipc_answer_0(callid, EINVAL); |
|
- | 214 | return 1; |
|
- | 215 | } |
|
- | 216 | ||
- | 217 | ipc_answer_0(callid, EOK); |
|
- | 218 | phone_hash = call.in_phone_hash; |
|
- | 219 | ||
- | 220 | /* |
|
- | 221 | * FIXME: up until now no async calls can be used!!! |
|
- | 222 | * (Which means e.g. printf() cannot be used) |
|
- | 223 | */ |
|
- | 224 | async_new_connection(phone_hash, 0, NULL, loader_connection); |
|
- | 225 | async_manager(); |
|
190 | 226 | ||
191 | /* not reached */ |
227 | /* not reached */ |
192 | return 0; |
228 | return 0; |
193 | } |
229 | } |
194 | 230 | ||
195 | /** @} |
231 | /** @} |
196 | */ |
232 | */ |
197 | 233 |