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1 | /* |
1 | /* |
2 | * Copyright (c) 2001-2004 Jakub Jermar |
2 | * Copyright (c) 2001-2004 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 genericproc |
30 | /** @addtogroup genericproc |
31 | * @{ |
31 | * @{ |
32 | */ |
32 | */ |
33 | 33 | ||
34 | /** |
34 | /** |
35 | * @file |
35 | * @file |
36 | * @brief Running userspace programs. |
36 | * @brief Running userspace programs. |
37 | */ |
37 | */ |
38 | 38 | ||
39 | #include <main/uinit.h> |
39 | #include <main/uinit.h> |
40 | #include <proc/thread.h> |
40 | #include <proc/thread.h> |
41 | #include <proc/task.h> |
41 | #include <proc/task.h> |
42 | #include <proc/uarg.h> |
42 | #include <proc/uarg.h> |
43 | #include <mm/as.h> |
43 | #include <mm/as.h> |
44 | #include <mm/slab.h> |
44 | #include <mm/slab.h> |
45 | #include <arch.h> |
45 | #include <arch.h> |
46 | #include <adt/list.h> |
46 | #include <adt/list.h> |
47 | #include <ipc/ipc.h> |
47 | #include <ipc/ipc.h> |
48 | #include <ipc/ipcrsc.h> |
48 | #include <ipc/ipcrsc.h> |
49 | #include <security/cap.h> |
49 | #include <security/cap.h> |
50 | #include <lib/elf.h> |
50 | #include <lib/elf.h> |
51 | #include <errno.h> |
51 | #include <errno.h> |
52 | #include <print.h> |
52 | #include <print.h> |
53 | #include <syscall/copy.h> |
53 | #include <syscall/copy.h> |
54 | #include <proc/program.h> |
54 | #include <proc/program.h> |
55 | 55 | ||
56 | #ifndef LOADED_PROG_STACK_PAGES_NO |
56 | #ifndef LOADED_PROG_STACK_PAGES_NO |
57 | #define LOADED_PROG_STACK_PAGES_NO 1 |
57 | #define LOADED_PROG_STACK_PAGES_NO 1 |
58 | #endif |
58 | #endif |
59 | 59 | ||
60 | /** |
60 | /** |
61 | * Points to the binary image used as the program loader. All non-initial |
61 | * Points to the binary image used as the program loader. All non-initial |
62 | * tasks are created from this executable image. |
62 | * tasks are created from this executable image. |
63 | */ |
63 | */ |
64 | void *program_loader = NULL; |
64 | void *program_loader = NULL; |
65 | 65 | ||
66 | /** Create a program using an existing address space. |
66 | /** Create a program using an existing address space. |
67 | * |
67 | * |
68 | * @param as Address space containing a binary program image. |
68 | * @param as Address space containing a binary program image. |
69 | * @param entry_addr Program entry-point address in program address space. |
69 | * @param entry_addr Program entry-point address in program address space. |
- | 70 | * @param name Name to set for the program's task. |
|
70 | * @param p Buffer for storing program information. |
71 | * @param p Buffer for storing program information. |
71 | */ |
72 | */ |
72 | void program_create(as_t *as, uintptr_t entry_addr, program_t *p) |
73 | void program_create(as_t *as, uintptr_t entry_addr, char *name, program_t *p) |
73 | { |
74 | { |
74 | as_area_t *a; |
75 | as_area_t *a; |
75 | uspace_arg_t *kernel_uarg; |
76 | uspace_arg_t *kernel_uarg; |
76 | 77 | ||
77 | kernel_uarg = (uspace_arg_t *) malloc(sizeof(uspace_arg_t), 0); |
78 | kernel_uarg = (uspace_arg_t *) malloc(sizeof(uspace_arg_t), 0); |
78 | kernel_uarg->uspace_entry = (void *) entry_addr; |
79 | kernel_uarg->uspace_entry = (void *) entry_addr; |
79 | kernel_uarg->uspace_stack = (void *) USTACK_ADDRESS; |
80 | kernel_uarg->uspace_stack = (void *) USTACK_ADDRESS; |
80 | kernel_uarg->uspace_thread_function = NULL; |
81 | kernel_uarg->uspace_thread_function = NULL; |
81 | kernel_uarg->uspace_thread_arg = NULL; |
82 | kernel_uarg->uspace_thread_arg = NULL; |
82 | kernel_uarg->uspace_uarg = NULL; |
83 | kernel_uarg->uspace_uarg = NULL; |
83 | 84 | ||
84 | p->task = task_create(as, "app"); |
85 | p->task = task_create(as, name); |
85 | ASSERT(p->task); |
86 | ASSERT(p->task); |
86 | 87 | ||
87 | /* |
88 | /* |
88 | * Create the data as_area. |
89 | * Create the data as_area. |
89 | */ |
90 | */ |
90 | a = as_area_create(as, AS_AREA_READ | AS_AREA_WRITE | AS_AREA_CACHEABLE, |
91 | a = as_area_create(as, AS_AREA_READ | AS_AREA_WRITE | AS_AREA_CACHEABLE, |
91 | LOADED_PROG_STACK_PAGES_NO * PAGE_SIZE, USTACK_ADDRESS, |
92 | LOADED_PROG_STACK_PAGES_NO * PAGE_SIZE, USTACK_ADDRESS, |
92 | AS_AREA_ATTR_NONE, &anon_backend, NULL); |
93 | AS_AREA_ATTR_NONE, &anon_backend, NULL); |
93 | 94 | ||
94 | /* |
95 | /* |
95 | * Create the main thread. |
96 | * Create the main thread. |
96 | */ |
97 | */ |
97 | p->main_thread = thread_create(uinit, kernel_uarg, p->task, |
98 | p->main_thread = thread_create(uinit, kernel_uarg, p->task, |
98 | THREAD_FLAG_USPACE, "uinit", false); |
99 | THREAD_FLAG_USPACE, "uinit", false); |
99 | ASSERT(p->main_thread); |
100 | ASSERT(p->main_thread); |
100 | } |
101 | } |
101 | 102 | ||
102 | /** Parse an executable image in the kernel memory. |
103 | /** Parse an executable image in the kernel memory. |
103 | * |
104 | * |
104 | * If the image belongs to a program loader, it is registered as such, |
105 | * If the image belongs to a program loader, it is registered as such, |
105 | * (and *task is set to NULL). Otherwise a task is created from the |
106 | * (and *task is set to NULL). Otherwise a task is created from the |
106 | * executable image. The task is returned in *task. |
107 | * executable image. The task is returned in *task. |
107 | * |
108 | * |
108 | * @param image_addr Address of an executable program image. |
109 | * @param image_addr Address of an executable program image. |
- | 110 | * @param name Name to set for the program's task. |
|
109 | * @param p Buffer for storing program info. If image_addr |
111 | * @param p Buffer for storing program info. If image_addr |
110 | * points to a loader image, p->task will be set to |
112 | * points to a loader image, p->task will be set to |
111 | * NULL and EOK will be returned. |
113 | * NULL and EOK will be returned. |
112 | * |
114 | * |
113 | * @return EOK on success or negative error code. |
115 | * @return EOK on success or negative error code. |
114 | */ |
116 | */ |
115 | int program_create_from_image(void *image_addr, program_t *p) |
117 | int program_create_from_image(void *image_addr, char *name, program_t *p) |
116 | { |
118 | { |
117 | as_t *as; |
119 | as_t *as; |
118 | unsigned int rc; |
120 | unsigned int rc; |
119 | 121 | ||
120 | as = as_create(0); |
122 | as = as_create(0); |
121 | ASSERT(as); |
123 | ASSERT(as); |
122 | 124 | ||
123 | rc = elf_load((elf_header_t *) image_addr, as, 0); |
125 | rc = elf_load((elf_header_t *) image_addr, as, 0); |
124 | if (rc != EE_OK) { |
126 | if (rc != EE_OK) { |
125 | as_destroy(as); |
127 | as_destroy(as); |
126 | p->task = NULL; |
128 | p->task = NULL; |
127 | p->main_thread = NULL; |
129 | p->main_thread = NULL; |
128 | if (rc != EE_LOADER) |
130 | if (rc != EE_LOADER) |
129 | return ENOTSUP; |
131 | return ENOTSUP; |
130 | 132 | ||
131 | /* Register image as the program loader */ |
133 | /* Register image as the program loader */ |
132 | ASSERT(program_loader == NULL); |
134 | ASSERT(program_loader == NULL); |
133 | program_loader = image_addr; |
135 | program_loader = image_addr; |
134 | printf("Registered program loader at 0x%" PRIp "\n", |
136 | printf("Registered program loader at 0x%" PRIp "\n", |
135 | image_addr); |
137 | image_addr); |
136 | return EOK; |
138 | return EOK; |
137 | } |
139 | } |
138 | 140 | ||
139 | program_create(as, ((elf_header_t *) image_addr)->e_entry, p); |
141 | program_create(as, ((elf_header_t *) image_addr)->e_entry, name, p); |
140 | 142 | ||
141 | return EOK; |
143 | return EOK; |
142 | } |
144 | } |
143 | 145 | ||
144 | /** Create a task from the program loader image. |
146 | /** Create a task from the program loader image. |
145 | * |
147 | * |
146 | * @param p Buffer for storing program info. |
148 | * @param p Buffer for storing program info. |
- | 149 | * @param name Name to set for the program's task. |
|
- | 150 | * |
|
147 | * @return EOK on success or negative error code. |
151 | * @return EOK on success or negative error code. |
148 | */ |
152 | */ |
149 | int program_create_loader(program_t *p) |
153 | int program_create_loader(program_t *p, char *name) |
150 | { |
154 | { |
151 | as_t *as; |
155 | as_t *as; |
152 | unsigned int rc; |
156 | unsigned int rc; |
153 | void *loader; |
157 | void *loader; |
154 | 158 | ||
155 | as = as_create(0); |
159 | as = as_create(0); |
156 | ASSERT(as); |
160 | ASSERT(as); |
157 | 161 | ||
158 | loader = program_loader; |
162 | loader = program_loader; |
159 | if (!loader) { |
163 | if (!loader) { |
160 | printf("Cannot spawn loader as none was registered\n"); |
164 | printf("Cannot spawn loader as none was registered\n"); |
161 | return ENOENT; |
165 | return ENOENT; |
162 | } |
166 | } |
163 | 167 | ||
164 | rc = elf_load((elf_header_t *) program_loader, as, ELD_F_LOADER); |
168 | rc = elf_load((elf_header_t *) program_loader, as, ELD_F_LOADER); |
165 | if (rc != EE_OK) { |
169 | if (rc != EE_OK) { |
166 | as_destroy(as); |
170 | as_destroy(as); |
167 | return ENOENT; |
171 | return ENOENT; |
168 | } |
172 | } |
169 | 173 | ||
170 | program_create(as, ((elf_header_t *) program_loader)->e_entry, p); |
174 | program_create(as, ((elf_header_t *) program_loader)->e_entry, |
- | 175 | name, p); |
|
171 | 176 | ||
172 | return EOK; |
177 | return EOK; |
173 | } |
178 | } |
174 | 179 | ||
175 | /** Make program ready. |
180 | /** Make program ready. |
176 | * |
181 | * |
177 | * Switch program's main thread to the ready state. |
182 | * Switch program's main thread to the ready state. |
178 | * |
183 | * |
179 | * @param p Program to make ready. |
184 | * @param p Program to make ready. |
180 | */ |
185 | */ |
181 | void program_ready(program_t *p) |
186 | void program_ready(program_t *p) |
182 | { |
187 | { |
183 | thread_ready(p->main_thread); |
188 | thread_ready(p->main_thread); |
184 | } |
189 | } |
185 | 190 | ||
186 | /** Syscall for creating a new loader instance from userspace. |
191 | /** Syscall for creating a new loader instance from userspace. |
187 | * |
192 | * |
188 | * Creates a new task from the program loader image, connects a phone |
193 | * Creates a new task from the program loader image, connects a phone |
189 | * to it and stores the phone id into the provided buffer. |
194 | * to it and stores the phone id into the provided buffer. |
190 | * |
195 | * |
191 | * @param uspace_phone_id Userspace address where to store the phone id. |
196 | * @param uspace_phone_id Userspace address where to store the phone id. |
- | 197 | * @param name Name to set on the new task (typically the same |
|
- | 198 | * as the command used to execute it). |
|
192 | * |
199 | * |
193 | * @return 0 on success or an error code from @ref errno.h. |
200 | * @return 0 on success or an error code from @ref errno.h. |
194 | */ |
201 | */ |
195 | unative_t sys_program_spawn_loader(int *uspace_phone_id) |
202 | unative_t sys_program_spawn_loader(int *uspace_phone_id, char *uspace_name, |
- | 203 | size_t name_len) |
|
196 | { |
204 | { |
197 | program_t p; |
205 | program_t p; |
198 | int fake_id; |
206 | int fake_id; |
199 | int rc; |
207 | int rc; |
200 | int phone_id; |
208 | int phone_id; |
- | 209 | char namebuf[TASK_NAME_BUFLEN]; |
|
201 | 210 | ||
202 | fake_id = 0; |
211 | fake_id = 0; |
203 | 212 | ||
204 | /* Before we even try creating the task, see if we can write the id */ |
213 | /* Before we even try creating the task, see if we can write the id */ |
205 | rc = (unative_t) copy_to_uspace(uspace_phone_id, &fake_id, |
214 | rc = (unative_t) copy_to_uspace(uspace_phone_id, &fake_id, |
206 | sizeof(fake_id)); |
215 | sizeof(fake_id)); |
207 | if (rc != 0) |
216 | if (rc != 0) |
208 | return rc; |
217 | return rc; |
209 | 218 | ||
- | 219 | /* Cap length of name and copy it from userspace. */ |
|
- | 220 | ||
- | 221 | if (name_len > THREAD_NAME_BUFLEN - 1) |
|
- | 222 | name_len = THREAD_NAME_BUFLEN - 1; |
|
- | 223 | ||
- | 224 | rc = copy_from_uspace(namebuf, uspace_name, name_len); |
|
- | 225 | if (rc != 0) |
|
- | 226 | return (unative_t) rc; |
|
- | 227 | ||
- | 228 | namebuf[name_len] = '\0'; |
|
- | 229 | ||
- | 230 | /* Allocate the phone for communicating with the new task. */ |
|
- | 231 | ||
210 | phone_id = phone_alloc(); |
232 | phone_id = phone_alloc(); |
211 | if (phone_id < 0) |
233 | if (phone_id < 0) |
212 | return ELIMIT; |
234 | return ELIMIT; |
213 | 235 | ||
- | 236 | /* Spawn the new task. */ |
|
- | 237 | ||
214 | rc = program_create_loader(&p); |
238 | rc = program_create_loader(&p, namebuf); |
215 | if (rc != 0) |
239 | if (rc != 0) |
216 | return rc; |
240 | return rc; |
217 | 241 | ||
218 | phone_connect(phone_id, &p.task->answerbox); |
242 | phone_connect(phone_id, &p.task->answerbox); |
219 | 243 | ||
220 | /* No need to aquire lock before task_ready() */ |
244 | /* No need to aquire lock before task_ready() */ |
221 | rc = (unative_t) copy_to_uspace(uspace_phone_id, &phone_id, |
245 | rc = (unative_t) copy_to_uspace(uspace_phone_id, &phone_id, |
222 | sizeof(phone_id)); |
246 | sizeof(phone_id)); |
223 | if (rc != 0) { |
247 | if (rc != 0) { |
224 | /* Ooops */ |
248 | /* Ooops */ |
225 | ipc_phone_hangup(&TASK->phones[phone_id]); |
249 | ipc_phone_hangup(&TASK->phones[phone_id]); |
226 | task_kill(p.task->taskid); |
250 | task_kill(p.task->taskid); |
227 | return rc; |
251 | return rc; |
228 | } |
252 | } |
229 | 253 | ||
230 | // FIXME: control the capabilities |
254 | // FIXME: control the capabilities |
231 | cap_set(p.task, cap_get(TASK)); |
255 | cap_set(p.task, cap_get(TASK)); |
232 | 256 | ||
233 | program_ready(&p); |
257 | program_ready(&p); |
234 | 258 | ||
235 | return EOK; |
259 | return EOK; |
236 | } |
260 | } |
237 | 261 | ||
238 | /** @} |
262 | /** @} |
239 | */ |
263 | */ |
240 | 264 |