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49ee3590 AL |
1 | /* |
2 | * QTest | |
3 | * | |
4 | * Copyright IBM, Corp. 2012 | |
5 | * Copyright Red Hat, Inc. 2012 | |
6 | * | |
7 | * Authors: | |
8 | * Anthony Liguori <aliguori@us.ibm.com> | |
9 | * Paolo Bonzini <pbonzini@redhat.com> | |
10 | * | |
11 | * This work is licensed under the terms of the GNU GPL, version 2 or later. | |
12 | * See the COPYING file in the top-level directory. | |
13 | * | |
14 | */ | |
15 | #include "libqtest.h" | |
16 | ||
17 | #include <glib.h> | |
18 | #include <sys/types.h> | |
19 | #include <sys/socket.h> | |
20 | #include <sys/wait.h> | |
21 | #include <sys/un.h> | |
22 | #include <inttypes.h> | |
23 | #include <errno.h> | |
24 | #include <stdio.h> | |
25 | #include <stdlib.h> | |
26 | #include <unistd.h> | |
27 | #include <string.h> | |
28 | ||
29 | #include "osdep.h" | |
30 | ||
31 | #define MAX_IRQ 256 | |
32 | ||
33 | QTestState *global_qtest; | |
34 | ||
35 | struct QTestState | |
36 | { | |
37 | int fd; | |
38 | bool irq_level[MAX_IRQ]; | |
39 | GString *rx; | |
40 | gchar *pid_file; | |
41 | }; | |
42 | ||
43 | #define g_assert_no_errno(ret) do { \ | |
44 | g_assert_cmpint(ret, !=, -1); \ | |
45 | } while (0) | |
46 | ||
47 | QTestState *qtest_init(const char *extra_args) | |
48 | { | |
49 | QTestState *s; | |
50 | struct sockaddr_un addr; | |
51 | int sock, ret, i; | |
52 | gchar *socket_path; | |
53 | gchar *pid_file; | |
54 | gchar *command; | |
55 | const char *qemu_binary; | |
56 | pid_t pid; | |
57 | socklen_t addrlen; | |
58 | ||
59 | qemu_binary = getenv("QTEST_QEMU_BINARY"); | |
60 | g_assert(qemu_binary != NULL); | |
61 | ||
62 | socket_path = g_strdup_printf("/tmp/qtest-%d.sock", getpid()); | |
63 | pid_file = g_strdup_printf("/tmp/qtest-%d.pid", getpid()); | |
64 | ||
65 | s = g_malloc(sizeof(*s)); | |
66 | ||
67 | sock = socket(PF_UNIX, SOCK_STREAM, 0); | |
68 | g_assert_no_errno(sock); | |
69 | ||
70 | addr.sun_family = AF_UNIX; | |
71 | snprintf(addr.sun_path, sizeof(addr.sun_path), "%s", socket_path); | |
72 | qemu_set_cloexec(sock); | |
73 | ||
74 | do { | |
75 | ret = bind(sock, (struct sockaddr *)&addr, sizeof(addr)); | |
76 | } while (ret == -1 && errno == EINTR); | |
77 | g_assert_no_errno(ret); | |
78 | listen(sock, 1); | |
79 | ||
80 | pid = fork(); | |
81 | if (pid == 0) { | |
82 | command = g_strdup_printf("%s " | |
83 | "-qtest unix:%s,nowait " | |
84 | "-qtest-log /dev/null " | |
85 | "-pidfile %s " | |
86 | "-machine accel=qtest " | |
87 | "%s", qemu_binary, socket_path, | |
88 | pid_file, | |
89 | extra_args ?: ""); | |
90 | ||
91 | ret = system(command); | |
92 | exit(ret); | |
93 | g_free(command); | |
94 | } | |
95 | ||
96 | do { | |
97 | ret = accept(sock, (struct sockaddr *)&addr, &addrlen); | |
98 | } while (ret == -1 && errno == EINTR); | |
99 | g_assert_no_errno(ret); | |
100 | close(sock); | |
101 | ||
102 | s->fd = ret; | |
103 | s->rx = g_string_new(""); | |
104 | s->pid_file = pid_file; | |
105 | for (i = 0; i < MAX_IRQ; i++) { | |
106 | s->irq_level[i] = false; | |
107 | } | |
108 | ||
109 | g_free(socket_path); | |
110 | ||
111 | return s; | |
112 | } | |
113 | ||
114 | void qtest_quit(QTestState *s) | |
115 | { | |
116 | FILE *f; | |
117 | char buffer[1024]; | |
118 | ||
119 | f = fopen(s->pid_file, "r"); | |
120 | if (f) { | |
121 | if (fgets(buffer, sizeof(buffer), f)) { | |
122 | pid_t pid = atoi(buffer); | |
123 | int status = 0; | |
124 | ||
125 | kill(pid, SIGTERM); | |
126 | waitpid(pid, &status, 0); | |
127 | } | |
128 | ||
129 | fclose(f); | |
130 | } | |
131 | } | |
132 | ||
133 | static void qtest_sendf(QTestState *s, const char *fmt, ...) | |
134 | { | |
135 | va_list ap; | |
136 | gchar *str; | |
137 | size_t size, offset; | |
138 | ||
139 | va_start(ap, fmt); | |
140 | str = g_strdup_vprintf(fmt, ap); | |
141 | va_end(ap); | |
142 | size = strlen(str); | |
143 | ||
144 | offset = 0; | |
145 | while (offset < size) { | |
146 | ssize_t len; | |
147 | ||
148 | len = write(s->fd, str + offset, size - offset); | |
149 | if (len == -1 && errno == EINTR) { | |
150 | continue; | |
151 | } | |
152 | ||
153 | g_assert_no_errno(len); | |
154 | g_assert_cmpint(len, >, 0); | |
155 | ||
156 | offset += len; | |
157 | } | |
158 | } | |
159 | ||
160 | static GString *qtest_recv_line(QTestState *s) | |
161 | { | |
162 | GString *line; | |
163 | size_t offset; | |
164 | char *eol; | |
165 | ||
166 | while ((eol = strchr(s->rx->str, '\n')) == NULL) { | |
167 | ssize_t len; | |
168 | char buffer[1024]; | |
169 | ||
170 | len = read(s->fd, buffer, sizeof(buffer)); | |
171 | if (len == -1 && errno == EINTR) { | |
172 | continue; | |
173 | } | |
174 | ||
175 | if (len == -1 || len == 0) { | |
176 | fprintf(stderr, "Broken pipe\n"); | |
177 | exit(1); | |
178 | } | |
179 | ||
180 | g_string_append_len(s->rx, buffer, len); | |
181 | } | |
182 | ||
183 | offset = eol - s->rx->str; | |
184 | line = g_string_new_len(s->rx->str, offset); | |
185 | g_string_erase(s->rx, 0, offset + 1); | |
186 | ||
187 | return line; | |
188 | } | |
189 | ||
190 | static gchar **qtest_rsp(QTestState *s, int expected_args) | |
191 | { | |
192 | GString *line; | |
193 | gchar **words; | |
194 | int i; | |
195 | ||
196 | redo: | |
197 | line = qtest_recv_line(s); | |
198 | words = g_strsplit(line->str, " ", 0); | |
199 | g_string_free(line, TRUE); | |
200 | ||
201 | if (strcmp(words[0], "IRQ") == 0) { | |
202 | int irq; | |
203 | ||
204 | g_assert(words[1] != NULL); | |
205 | g_assert(words[2] != NULL); | |
206 | ||
207 | irq = strtoul(words[2], NULL, 0); | |
208 | g_assert_cmpint(irq, >=, 0); | |
209 | g_assert_cmpint(irq, <, MAX_IRQ); | |
210 | ||
211 | if (strcmp(words[1], "raise") == 0) { | |
212 | s->irq_level[irq] = true; | |
213 | } else { | |
214 | s->irq_level[irq] = false; | |
215 | } | |
216 | ||
217 | g_strfreev(words); | |
218 | goto redo; | |
219 | } | |
220 | ||
221 | g_assert(words[0] != NULL); | |
222 | g_assert_cmpstr(words[0], ==, "OK"); | |
223 | ||
224 | if (expected_args) { | |
225 | for (i = 0; i < expected_args; i++) { | |
226 | g_assert(words[i] != NULL); | |
227 | } | |
228 | } else { | |
229 | g_strfreev(words); | |
230 | } | |
231 | ||
232 | return words; | |
233 | } | |
234 | ||
235 | const char *qtest_get_arch(void) | |
236 | { | |
237 | const char *qemu = getenv("QTEST_QEMU_BINARY"); | |
238 | const char *end = strrchr(qemu, '/'); | |
239 | ||
240 | return end + strlen("/qemu-system-"); | |
241 | } | |
242 | ||
243 | bool qtest_get_irq(QTestState *s, int num) | |
244 | { | |
245 | /* dummy operation in order to make sure irq is up to date */ | |
246 | qtest_inb(s, 0); | |
247 | ||
248 | return s->irq_level[num]; | |
249 | } | |
250 | ||
251 | static int64_t qtest_clock_rsp(QTestState *s) | |
252 | { | |
253 | gchar **words; | |
254 | int64_t clock; | |
255 | words = qtest_rsp(s, 2); | |
256 | clock = g_ascii_strtoll(words[1], NULL, 0); | |
257 | g_strfreev(words); | |
258 | return clock; | |
259 | } | |
260 | ||
261 | int64_t qtest_clock_step_next(QTestState *s) | |
262 | { | |
263 | qtest_sendf(s, "clock_step\n"); | |
264 | return qtest_clock_rsp(s); | |
265 | } | |
266 | ||
267 | int64_t qtest_clock_step(QTestState *s, int64_t step) | |
268 | { | |
269 | qtest_sendf(s, "clock_step %"PRIi64"\n", step); | |
270 | return qtest_clock_rsp(s); | |
271 | } | |
272 | ||
273 | int64_t qtest_clock_set(QTestState *s, int64_t val) | |
274 | { | |
275 | qtest_sendf(s, "clock_set %"PRIi64"\n", val); | |
276 | return qtest_clock_rsp(s); | |
277 | } | |
278 | ||
279 | void qtest_irq_intercept_out(QTestState *s, const char *qom_path) | |
280 | { | |
281 | qtest_sendf(s, "irq_intercept_out %s\n", qom_path); | |
282 | qtest_rsp(s, 0); | |
283 | } | |
284 | ||
285 | void qtest_irq_intercept_in(QTestState *s, const char *qom_path) | |
286 | { | |
287 | qtest_sendf(s, "irq_intercept_in %s\n", qom_path); | |
288 | qtest_rsp(s, 0); | |
289 | } | |
290 | ||
291 | static void qtest_out(QTestState *s, const char *cmd, uint16_t addr, uint32_t value) | |
292 | { | |
293 | qtest_sendf(s, "%s 0x%x 0x%x\n", cmd, addr, value); | |
294 | qtest_rsp(s, 0); | |
295 | } | |
296 | ||
297 | void qtest_outb(QTestState *s, uint16_t addr, uint8_t value) | |
298 | { | |
299 | qtest_out(s, "outb", addr, value); | |
300 | } | |
301 | ||
302 | void qtest_outw(QTestState *s, uint16_t addr, uint16_t value) | |
303 | { | |
304 | qtest_out(s, "outw", addr, value); | |
305 | } | |
306 | ||
307 | void qtest_outl(QTestState *s, uint16_t addr, uint32_t value) | |
308 | { | |
309 | qtest_out(s, "outl", addr, value); | |
310 | } | |
311 | ||
312 | static uint32_t qtest_in(QTestState *s, const char *cmd, uint16_t addr) | |
313 | { | |
314 | gchar **args; | |
315 | uint32_t value; | |
316 | ||
317 | qtest_sendf(s, "%s 0x%x\n", cmd, addr); | |
318 | args = qtest_rsp(s, 2); | |
319 | value = strtoul(args[1], NULL, 0); | |
320 | g_strfreev(args); | |
321 | ||
322 | return value; | |
323 | } | |
324 | ||
325 | uint8_t qtest_inb(QTestState *s, uint16_t addr) | |
326 | { | |
327 | return qtest_in(s, "inb", addr); | |
328 | } | |
329 | ||
330 | uint16_t qtest_inw(QTestState *s, uint16_t addr) | |
331 | { | |
332 | return qtest_in(s, "inw", addr); | |
333 | } | |
334 | ||
335 | uint32_t qtest_inl(QTestState *s, uint16_t addr) | |
336 | { | |
337 | return qtest_in(s, "inl", addr); | |
338 | } | |
339 | ||
340 | static int hex2nib(char ch) | |
341 | { | |
342 | if (ch >= '0' && ch <= '9') { | |
343 | return ch - '0'; | |
344 | } else if (ch >= 'a' && ch <= 'f') { | |
345 | return 10 + (ch - 'a'); | |
346 | } else if (ch >= 'A' && ch <= 'F') { | |
347 | return 10 + (ch - 'a'); | |
348 | } else { | |
349 | return -1; | |
350 | } | |
351 | } | |
352 | ||
353 | void qtest_memread(QTestState *s, uint64_t addr, void *data, size_t size) | |
354 | { | |
355 | uint8_t *ptr = data; | |
356 | gchar **args; | |
357 | size_t i; | |
358 | ||
ce6bf17a | 359 | qtest_sendf(s, "read 0x%" PRIx64 " 0x%x\n", addr, size); |
49ee3590 AL |
360 | args = qtest_rsp(s, 2); |
361 | ||
362 | for (i = 0; i < size; i++) { | |
363 | ptr[i] = hex2nib(args[1][2 + (i * 2)]) << 4; | |
364 | ptr[i] |= hex2nib(args[1][2 + (i * 2) + 1]); | |
365 | } | |
366 | ||
367 | g_strfreev(args); | |
368 | } | |
369 | ||
370 | void qtest_add_func(const char *str, void (*fn)) | |
371 | { | |
372 | gchar *path = g_strdup_printf("/%s/%s", qtest_get_arch(), str); | |
373 | g_test_add_func(path, fn); | |
374 | } | |
375 | ||
376 | void qtest_memwrite(QTestState *s, uint64_t addr, const void *data, size_t size) | |
377 | { | |
378 | const uint8_t *ptr = data; | |
379 | size_t i; | |
380 | ||
ce6bf17a | 381 | qtest_sendf(s, "write 0x%" PRIx64 " 0x%x 0x", addr, size); |
49ee3590 AL |
382 | for (i = 0; i < size; i++) { |
383 | qtest_sendf(s, "%02x", ptr[i]); | |
384 | } | |
385 | qtest_sendf(s, "\n"); | |
386 | qtest_rsp(s, 0); | |
387 | } |