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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 name Name to set for the program's task. |
71 | * @param p Buffer for storing program information. |
71 | * @param p Buffer for storing program information. |
72 | */ |
72 | */ |
73 | void program_create(as_t *as, uintptr_t entry_addr, char *name, program_t *p) |
73 | void program_create(as_t *as, uintptr_t entry_addr, char *name, program_t *p) |
74 | { |
74 | { |
75 | as_area_t *a; |
75 | as_area_t *a; |
76 | uspace_arg_t *kernel_uarg; |
76 | uspace_arg_t *kernel_uarg; |
77 | 77 | ||
78 | kernel_uarg = (uspace_arg_t *) malloc(sizeof(uspace_arg_t), 0); |
78 | kernel_uarg = (uspace_arg_t *) malloc(sizeof(uspace_arg_t), 0); |
79 | kernel_uarg->uspace_entry = (void *) entry_addr; |
79 | kernel_uarg->uspace_entry = (void *) entry_addr; |
80 | kernel_uarg->uspace_stack = (void *) USTACK_ADDRESS; |
80 | kernel_uarg->uspace_stack = (void *) USTACK_ADDRESS; |
81 | kernel_uarg->uspace_thread_function = NULL; |
81 | kernel_uarg->uspace_thread_function = NULL; |
82 | kernel_uarg->uspace_thread_arg = NULL; |
82 | kernel_uarg->uspace_thread_arg = NULL; |
83 | kernel_uarg->uspace_uarg = NULL; |
83 | kernel_uarg->uspace_uarg = NULL; |
84 | 84 | ||
85 | p->task = task_create(as, name); |
85 | p->task = task_create(as, name); |
86 | ASSERT(p->task); |
86 | ASSERT(p->task); |
87 | 87 | ||
88 | /* |
88 | /* |
89 | * Create the data as_area. |
89 | * Create the data as_area. |
90 | */ |
90 | */ |
91 | 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, |
92 | LOADED_PROG_STACK_PAGES_NO * PAGE_SIZE, USTACK_ADDRESS, |
92 | LOADED_PROG_STACK_PAGES_NO * PAGE_SIZE, USTACK_ADDRESS, |
93 | AS_AREA_ATTR_NONE, &anon_backend, NULL); |
93 | AS_AREA_ATTR_NONE, &anon_backend, NULL); |
94 | 94 | ||
95 | /* |
95 | /* |
96 | * Create the main thread. |
96 | * Create the main thread. |
97 | */ |
97 | */ |
98 | p->main_thread = thread_create(uinit, kernel_uarg, p->task, |
98 | p->main_thread = thread_create(uinit, kernel_uarg, p->task, |
99 | THREAD_FLAG_USPACE, "uinit", false); |
99 | THREAD_FLAG_USPACE, "uinit", false); |
100 | ASSERT(p->main_thread); |
100 | ASSERT(p->main_thread); |
101 | } |
101 | } |
102 | 102 | ||
103 | /** Parse an executable image in the kernel memory. |
103 | /** Parse an executable image in the kernel memory. |
104 | * |
104 | * |
105 | * 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, |
106 | * (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 |
107 | * executable image. The task is returned in *task. |
107 | * executable image. The task is returned in *task. |
108 | * |
108 | * |
109 | * @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. |
110 | * @param name Name to set for the program's task. |
111 | * @param p Buffer for storing program info. If image_addr |
111 | * @param p Buffer for storing program info. If image_addr |
112 | * points to a loader image, p->task will be set to |
112 | * points to a loader image, p->task will be set to |
113 | * NULL and EOK will be returned. |
113 | * NULL and EOK will be returned. |
114 | * |
114 | * |
115 | * @return EOK on success or negative error code. |
115 | * @return EOK on success or negative error code. |
116 | */ |
116 | */ |
117 | int program_create_from_image(void *image_addr, char *name, program_t *p) |
117 | int program_create_from_image(void *image_addr, char *name, program_t *p) |
118 | { |
118 | { |
119 | as_t *as; |
119 | as_t *as; |
120 | unsigned int rc; |
120 | unsigned int rc; |
121 | 121 | ||
122 | as = as_create(0); |
122 | as = as_create(0); |
123 | ASSERT(as); |
123 | ASSERT(as); |
124 | 124 | ||
125 | rc = elf_load((elf_header_t *) image_addr, as, 0); |
125 | rc = elf_load((elf_header_t *) image_addr, as, 0); |
126 | if (rc != EE_OK) { |
126 | if (rc != EE_OK) { |
127 | as_destroy(as); |
127 | as_destroy(as); |
128 | p->task = NULL; |
128 | p->task = NULL; |
129 | p->main_thread = NULL; |
129 | p->main_thread = NULL; |
130 | if (rc != EE_LOADER) |
130 | if (rc != EE_LOADER) |
131 | return ENOTSUP; |
131 | return ENOTSUP; |
132 | 132 | ||
133 | /* Register image as the program loader */ |
133 | /* Register image as the program loader */ |
134 | ASSERT(program_loader == NULL); |
134 | ASSERT(program_loader == NULL); |
135 | program_loader = image_addr; |
135 | program_loader = image_addr; |
136 | printf("Registered program loader at 0x%" PRIp "\n", |
136 | LOG("Registered program loader at 0x%" PRIp "\n", |
137 | image_addr); |
137 | image_addr); |
138 | return EOK; |
138 | return EOK; |
139 | } |
139 | } |
140 | 140 | ||
141 | program_create(as, ((elf_header_t *) image_addr)->e_entry, name, p); |
141 | program_create(as, ((elf_header_t *) image_addr)->e_entry, name, p); |
142 | 142 | ||
143 | return EOK; |
143 | return EOK; |
144 | } |
144 | } |
145 | 145 | ||
146 | /** Create a task from the program loader image. |
146 | /** Create a task from the program loader image. |
147 | * |
147 | * |
148 | * @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. |
149 | * @param name Name to set for the program's task. |
150 | * |
150 | * |
151 | * @return EOK on success or negative error code. |
151 | * @return EOK on success or negative error code. |
152 | */ |
152 | */ |
153 | int program_create_loader(program_t *p, char *name) |
153 | int program_create_loader(program_t *p, char *name) |
154 | { |
154 | { |
155 | as_t *as; |
155 | as_t *as; |
156 | unsigned int rc; |
156 | unsigned int rc; |
157 | void *loader; |
157 | void *loader; |
158 | 158 | ||
159 | as = as_create(0); |
159 | as = as_create(0); |
160 | ASSERT(as); |
160 | ASSERT(as); |
161 | 161 | ||
162 | loader = program_loader; |
162 | loader = program_loader; |
163 | if (!loader) { |
163 | if (!loader) { |
164 | printf("Cannot spawn loader as none was registered\n"); |
164 | printf("Cannot spawn loader as none was registered\n"); |
165 | return ENOENT; |
165 | return ENOENT; |
166 | } |
166 | } |
167 | 167 | ||
168 | 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); |
169 | if (rc != EE_OK) { |
169 | if (rc != EE_OK) { |
170 | as_destroy(as); |
170 | as_destroy(as); |
171 | return ENOENT; |
171 | return ENOENT; |
172 | } |
172 | } |
173 | 173 | ||
174 | program_create(as, ((elf_header_t *) program_loader)->e_entry, |
174 | program_create(as, ((elf_header_t *) program_loader)->e_entry, |
175 | name, p); |
175 | name, p); |
176 | 176 | ||
177 | return EOK; |
177 | return EOK; |
178 | } |
178 | } |
179 | 179 | ||
180 | /** Make program ready. |
180 | /** Make program ready. |
181 | * |
181 | * |
182 | * Switch program's main thread to the ready state. |
182 | * Switch program's main thread to the ready state. |
183 | * |
183 | * |
184 | * @param p Program to make ready. |
184 | * @param p Program to make ready. |
185 | */ |
185 | */ |
186 | void program_ready(program_t *p) |
186 | void program_ready(program_t *p) |
187 | { |
187 | { |
188 | thread_ready(p->main_thread); |
188 | thread_ready(p->main_thread); |
189 | } |
189 | } |
190 | 190 | ||
191 | /** Syscall for creating a new loader instance from userspace. |
191 | /** Syscall for creating a new loader instance from userspace. |
192 | * |
192 | * |
193 | * Creates a new task from the program loader image and sets |
193 | * Creates a new task from the program loader image and sets |
194 | * the task name. |
194 | * the task name. |
195 | * |
195 | * |
196 | * @param name Name to set on the new task (typically the same |
196 | * @param name Name to set on the new task (typically the same |
197 | * as the command used to execute it). |
197 | * as the command used to execute it). |
198 | * |
198 | * |
199 | * @return 0 on success or an error code from @ref errno.h. |
199 | * @return 0 on success or an error code from @ref errno.h. |
200 | */ |
200 | */ |
201 | unative_t sys_program_spawn_loader(char *uspace_name, size_t name_len) |
201 | unative_t sys_program_spawn_loader(char *uspace_name, size_t name_len) |
202 | { |
202 | { |
203 | program_t p; |
203 | program_t p; |
204 | int rc; |
204 | int rc; |
205 | char namebuf[TASK_NAME_BUFLEN]; |
205 | char namebuf[TASK_NAME_BUFLEN]; |
206 | 206 | ||
207 | /* Cap length of name and copy it from userspace. */ |
207 | /* Cap length of name and copy it from userspace. */ |
208 | 208 | ||
209 | if (name_len > TASK_NAME_BUFLEN - 1) |
209 | if (name_len > TASK_NAME_BUFLEN - 1) |
210 | name_len = TASK_NAME_BUFLEN - 1; |
210 | name_len = TASK_NAME_BUFLEN - 1; |
211 | 211 | ||
212 | rc = copy_from_uspace(namebuf, uspace_name, name_len); |
212 | rc = copy_from_uspace(namebuf, uspace_name, name_len); |
213 | if (rc != 0) |
213 | if (rc != 0) |
214 | return (unative_t) rc; |
214 | return (unative_t) rc; |
215 | 215 | ||
216 | namebuf[name_len] = 0; |
216 | namebuf[name_len] = 0; |
217 | 217 | ||
218 | /* Spawn the new task. */ |
218 | /* Spawn the new task. */ |
219 | 219 | ||
220 | rc = program_create_loader(&p, namebuf); |
220 | rc = program_create_loader(&p, namebuf); |
221 | if (rc != 0) |
221 | if (rc != 0) |
222 | return rc; |
222 | return rc; |
223 | 223 | ||
224 | // FIXME: control the capabilities |
224 | // FIXME: control the capabilities |
225 | cap_set(p.task, cap_get(TASK)); |
225 | cap_set(p.task, cap_get(TASK)); |
226 | 226 | ||
227 | program_ready(&p); |
227 | program_ready(&p); |
228 | 228 | ||
229 | return EOK; |
229 | return EOK; |
230 | } |
230 | } |
231 | 231 | ||
232 | /** @} |
232 | /** @} |
233 | */ |
233 | */ |
234 | 234 |