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Commit | Line | Data |
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e3d4d252 | 1 | /* |
42074a9d | 2 | * QEMU Guest Agent POSIX-specific command implementations |
e3d4d252 MR |
3 | * |
4 | * Copyright IBM Corp. 2011 | |
5 | * | |
6 | * Authors: | |
7 | * Michael Roth <mdroth@linux.vnet.ibm.com> | |
3424fc9f | 8 | * Michal Privoznik <mprivozn@redhat.com> |
e3d4d252 MR |
9 | * |
10 | * This work is licensed under the terms of the GNU GPL, version 2 or later. | |
11 | * See the COPYING file in the top-level directory. | |
12 | */ | |
13 | ||
4459bf38 | 14 | #include "qemu/osdep.h" |
e72c3f2e | 15 | #include <sys/ioctl.h> |
9848f797 | 16 | #include <sys/utsname.h> |
2c02cbf6 | 17 | #include <sys/wait.h> |
46d4c572 | 18 | #include <dirent.h> |
eb815e24 | 19 | #include "qga-qapi-commands.h" |
e688df6b | 20 | #include "qapi/error.h" |
7b1b5d19 | 21 | #include "qapi/qmp/qerror.h" |
1de7afc9 | 22 | #include "qemu/host-utils.h" |
12505396 | 23 | #include "qemu/sockets.h" |
920639ca | 24 | #include "qemu/base64.h" |
f348b6d1 | 25 | #include "qemu/cutils.h" |
5d3586b8 | 26 | #include "commands-common.h" |
22668881 | 27 | #include "block/nvme.h" |
1a89a17b | 28 | #include "cutils.h" |
4eb36d40 | 29 | |
e674605f TG |
30 | #ifdef HAVE_UTMPX |
31 | #include <utmpx.h> | |
32 | #endif | |
33 | ||
4eb36d40 | 34 | #if defined(__linux__) |
e3d4d252 | 35 | #include <mntent.h> |
25b5ff1a | 36 | #include <sys/statvfs.h> |
22668881 | 37 | #include <linux/nvme_ioctl.h> |
e3d4d252 | 38 | |
b616105a TG |
39 | #ifdef CONFIG_LIBUDEV |
40 | #include <libudev.h> | |
41 | #endif | |
e72c3f2e MR |
42 | #endif |
43 | ||
59e35c7b AD |
44 | #ifdef HAVE_GETIFADDRS |
45 | #include <arpa/inet.h> | |
46 | #include <sys/socket.h> | |
47 | #include <net/if.h> | |
a1241094 | 48 | #include <net/ethernet.h> |
59e35c7b | 49 | #include <sys/types.h> |
59e35c7b AD |
50 | #ifdef CONFIG_SOLARIS |
51 | #include <sys/sockio.h> | |
52 | #endif | |
53 | #endif | |
54 | ||
77dbc81b | 55 | static void ga_wait_child(pid_t pid, int *status, Error **errp) |
d220a6df LC |
56 | { |
57 | pid_t rpid; | |
58 | ||
59 | *status = 0; | |
60 | ||
61 | do { | |
62 | rpid = waitpid(pid, status, 0); | |
63 | } while (rpid == -1 && errno == EINTR); | |
64 | ||
65 | if (rpid == -1) { | |
77dbc81b MA |
66 | error_setg_errno(errp, errno, "failed to wait for child (pid: %d)", |
67 | pid); | |
d220a6df LC |
68 | return; |
69 | } | |
70 | ||
71 | g_assert(rpid == pid); | |
72 | } | |
73 | ||
77dbc81b | 74 | void qmp_guest_shutdown(bool has_mode, const char *mode, Error **errp) |
e3d4d252 | 75 | { |
e3d4d252 | 76 | const char *shutdown_flag; |
d220a6df LC |
77 | Error *local_err = NULL; |
78 | pid_t pid; | |
3674838c | 79 | int status; |
e3d4d252 | 80 | |
c8ec041d AD |
81 | #ifdef CONFIG_SOLARIS |
82 | const char *powerdown_flag = "-i5"; | |
83 | const char *halt_flag = "-i0"; | |
84 | const char *reboot_flag = "-i6"; | |
e40762fc AI |
85 | #elif defined(CONFIG_BSD) |
86 | const char *powerdown_flag = "-p"; | |
87 | const char *halt_flag = "-h"; | |
88 | const char *reboot_flag = "-r"; | |
c8ec041d AD |
89 | #else |
90 | const char *powerdown_flag = "-P"; | |
91 | const char *halt_flag = "-H"; | |
92 | const char *reboot_flag = "-r"; | |
93 | #endif | |
94 | ||
e3d4d252 MR |
95 | slog("guest-shutdown called, mode: %s", mode); |
96 | if (!has_mode || strcmp(mode, "powerdown") == 0) { | |
c8ec041d | 97 | shutdown_flag = powerdown_flag; |
e3d4d252 | 98 | } else if (strcmp(mode, "halt") == 0) { |
c8ec041d | 99 | shutdown_flag = halt_flag; |
e3d4d252 | 100 | } else if (strcmp(mode, "reboot") == 0) { |
c8ec041d | 101 | shutdown_flag = reboot_flag; |
e3d4d252 | 102 | } else { |
77dbc81b | 103 | error_setg(errp, |
d220a6df | 104 | "mode is invalid (valid values are: halt|powerdown|reboot"); |
e3d4d252 MR |
105 | return; |
106 | } | |
107 | ||
d5dd3498 LC |
108 | pid = fork(); |
109 | if (pid == 0) { | |
e3d4d252 MR |
110 | /* child, start the shutdown */ |
111 | setsid(); | |
3674838c LC |
112 | reopen_fd_to_null(0); |
113 | reopen_fd_to_null(1); | |
114 | reopen_fd_to_null(2); | |
e3d4d252 | 115 | |
c8ec041d AD |
116 | #ifdef CONFIG_SOLARIS |
117 | execl("/sbin/shutdown", "shutdown", shutdown_flag, "-g0", "-y", | |
118 | "hypervisor initiated shutdown", (char *)NULL); | |
e40762fc AI |
119 | #elif defined(CONFIG_BSD) |
120 | execl("/sbin/shutdown", "shutdown", shutdown_flag, "+0", | |
121 | "hypervisor initiated shutdown", (char *)NULL); | |
c8ec041d | 122 | #else |
fcc41961 MAL |
123 | execl("/sbin/shutdown", "shutdown", "-h", shutdown_flag, "+0", |
124 | "hypervisor initiated shutdown", (char *)NULL); | |
c8ec041d | 125 | #endif |
3674838c | 126 | _exit(EXIT_FAILURE); |
d5dd3498 | 127 | } else if (pid < 0) { |
77dbc81b | 128 | error_setg_errno(errp, errno, "failed to create child process"); |
d220a6df | 129 | return; |
e3d4d252 | 130 | } |
d5dd3498 | 131 | |
d220a6df | 132 | ga_wait_child(pid, &status, &local_err); |
84d18f06 | 133 | if (local_err) { |
77dbc81b | 134 | error_propagate(errp, local_err); |
d220a6df LC |
135 | return; |
136 | } | |
137 | ||
138 | if (!WIFEXITED(status)) { | |
77dbc81b | 139 | error_setg(errp, "child process has terminated abnormally"); |
d220a6df LC |
140 | return; |
141 | } | |
142 | ||
143 | if (WEXITSTATUS(status)) { | |
77dbc81b | 144 | error_setg(errp, "child process has failed to shutdown"); |
d5dd3498 LC |
145 | return; |
146 | } | |
147 | ||
085d8134 | 148 | /* succeeded */ |
e3d4d252 MR |
149 | } |
150 | ||
2c958923 | 151 | void qmp_guest_set_time(bool has_time, int64_t time_ns, Error **errp) |
a1bca57f LL |
152 | { |
153 | int ret; | |
154 | int status; | |
155 | pid_t pid; | |
156 | Error *local_err = NULL; | |
157 | struct timeval tv; | |
5c6096e5 CH |
158 | static const char hwclock_path[] = "/sbin/hwclock"; |
159 | static int hwclock_available = -1; | |
160 | ||
161 | if (hwclock_available < 0) { | |
162 | hwclock_available = (access(hwclock_path, X_OK) == 0); | |
163 | } | |
164 | ||
165 | if (!hwclock_available) { | |
166 | error_setg(errp, QERR_UNSUPPORTED); | |
167 | return; | |
168 | } | |
a1bca57f | 169 | |
2c958923 MP |
170 | /* If user has passed a time, validate and set it. */ |
171 | if (has_time) { | |
00d2f370 MAL |
172 | GDate date = { 0, }; |
173 | ||
2c958923 MP |
174 | /* year-2038 will overflow in case time_t is 32bit */ |
175 | if (time_ns / 1000000000 != (time_t)(time_ns / 1000000000)) { | |
176 | error_setg(errp, "Time %" PRId64 " is too large", time_ns); | |
177 | return; | |
178 | } | |
179 | ||
180 | tv.tv_sec = time_ns / 1000000000; | |
181 | tv.tv_usec = (time_ns % 1000000000) / 1000; | |
00d2f370 MAL |
182 | g_date_set_time_t(&date, tv.tv_sec); |
183 | if (date.year < 1970 || date.year >= 2070) { | |
184 | error_setg_errno(errp, errno, "Invalid time"); | |
185 | return; | |
186 | } | |
2c958923 MP |
187 | |
188 | ret = settimeofday(&tv, NULL); | |
189 | if (ret < 0) { | |
190 | error_setg_errno(errp, errno, "Failed to set time to guest"); | |
191 | return; | |
192 | } | |
a1bca57f LL |
193 | } |
194 | ||
2c958923 MP |
195 | /* Now, if user has passed a time to set and the system time is set, we |
196 | * just need to synchronize the hardware clock. However, if no time was | |
197 | * passed, user is requesting the opposite: set the system time from the | |
1634df56 | 198 | * hardware clock (RTC). */ |
a1bca57f LL |
199 | pid = fork(); |
200 | if (pid == 0) { | |
201 | setsid(); | |
202 | reopen_fd_to_null(0); | |
203 | reopen_fd_to_null(1); | |
204 | reopen_fd_to_null(2); | |
205 | ||
2c958923 MP |
206 | /* Use '/sbin/hwclock -w' to set RTC from the system time, |
207 | * or '/sbin/hwclock -s' to set the system time from RTC. */ | |
fcc41961 | 208 | execl(hwclock_path, "hwclock", has_time ? "-w" : "-s", NULL); |
a1bca57f LL |
209 | _exit(EXIT_FAILURE); |
210 | } else if (pid < 0) { | |
211 | error_setg_errno(errp, errno, "failed to create child process"); | |
212 | return; | |
213 | } | |
214 | ||
215 | ga_wait_child(pid, &status, &local_err); | |
84d18f06 | 216 | if (local_err) { |
a1bca57f LL |
217 | error_propagate(errp, local_err); |
218 | return; | |
219 | } | |
220 | ||
221 | if (!WIFEXITED(status)) { | |
222 | error_setg(errp, "child process has terminated abnormally"); | |
223 | return; | |
224 | } | |
225 | ||
226 | if (WEXITSTATUS(status)) { | |
227 | error_setg(errp, "hwclock failed to set hardware clock to system time"); | |
228 | return; | |
229 | } | |
230 | } | |
231 | ||
895b00f6 MAL |
232 | typedef enum { |
233 | RW_STATE_NEW, | |
234 | RW_STATE_READING, | |
235 | RW_STATE_WRITING, | |
236 | } RwState; | |
237 | ||
5d3586b8 | 238 | struct GuestFileHandle { |
e3d4d252 MR |
239 | uint64_t id; |
240 | FILE *fh; | |
895b00f6 | 241 | RwState state; |
e3d4d252 | 242 | QTAILQ_ENTRY(GuestFileHandle) next; |
5d3586b8 | 243 | }; |
e3d4d252 MR |
244 | |
245 | static struct { | |
246 | QTAILQ_HEAD(, GuestFileHandle) filehandles; | |
b4fe97c8 DL |
247 | } guest_file_state = { |
248 | .filehandles = QTAILQ_HEAD_INITIALIZER(guest_file_state.filehandles), | |
249 | }; | |
e3d4d252 | 250 | |
39097daf | 251 | static int64_t guest_file_handle_add(FILE *fh, Error **errp) |
e3d4d252 MR |
252 | { |
253 | GuestFileHandle *gfh; | |
39097daf MR |
254 | int64_t handle; |
255 | ||
256 | handle = ga_get_fd_handle(ga_state, errp); | |
a903f40c MA |
257 | if (handle < 0) { |
258 | return -1; | |
39097daf | 259 | } |
e3d4d252 | 260 | |
f3a06403 | 261 | gfh = g_new0(GuestFileHandle, 1); |
39097daf | 262 | gfh->id = handle; |
e3d4d252 MR |
263 | gfh->fh = fh; |
264 | QTAILQ_INSERT_TAIL(&guest_file_state.filehandles, gfh, next); | |
39097daf MR |
265 | |
266 | return handle; | |
e3d4d252 MR |
267 | } |
268 | ||
5d3586b8 | 269 | GuestFileHandle *guest_file_handle_find(int64_t id, Error **errp) |
e3d4d252 MR |
270 | { |
271 | GuestFileHandle *gfh; | |
272 | ||
273 | QTAILQ_FOREACH(gfh, &guest_file_state.filehandles, next) | |
274 | { | |
275 | if (gfh->id == id) { | |
276 | return gfh; | |
277 | } | |
278 | } | |
279 | ||
77dbc81b | 280 | error_setg(errp, "handle '%" PRId64 "' has not been found", id); |
e3d4d252 MR |
281 | return NULL; |
282 | } | |
283 | ||
c689b4f1 LE |
284 | typedef const char * const ccpc; |
285 | ||
8fe6bbca LE |
286 | #ifndef O_BINARY |
287 | #define O_BINARY 0 | |
288 | #endif | |
289 | ||
c689b4f1 LE |
290 | /* http://pubs.opengroup.org/onlinepubs/9699919799/functions/fopen.html */ |
291 | static const struct { | |
292 | ccpc *forms; | |
293 | int oflag_base; | |
294 | } guest_file_open_modes[] = { | |
8fe6bbca LE |
295 | { (ccpc[]){ "r", NULL }, O_RDONLY }, |
296 | { (ccpc[]){ "rb", NULL }, O_RDONLY | O_BINARY }, | |
297 | { (ccpc[]){ "w", NULL }, O_WRONLY | O_CREAT | O_TRUNC }, | |
298 | { (ccpc[]){ "wb", NULL }, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY }, | |
299 | { (ccpc[]){ "a", NULL }, O_WRONLY | O_CREAT | O_APPEND }, | |
300 | { (ccpc[]){ "ab", NULL }, O_WRONLY | O_CREAT | O_APPEND | O_BINARY }, | |
301 | { (ccpc[]){ "r+", NULL }, O_RDWR }, | |
302 | { (ccpc[]){ "rb+", "r+b", NULL }, O_RDWR | O_BINARY }, | |
303 | { (ccpc[]){ "w+", NULL }, O_RDWR | O_CREAT | O_TRUNC }, | |
304 | { (ccpc[]){ "wb+", "w+b", NULL }, O_RDWR | O_CREAT | O_TRUNC | O_BINARY }, | |
305 | { (ccpc[]){ "a+", NULL }, O_RDWR | O_CREAT | O_APPEND }, | |
306 | { (ccpc[]){ "ab+", "a+b", NULL }, O_RDWR | O_CREAT | O_APPEND | O_BINARY } | |
c689b4f1 LE |
307 | }; |
308 | ||
309 | static int | |
77dbc81b | 310 | find_open_flag(const char *mode_str, Error **errp) |
c689b4f1 LE |
311 | { |
312 | unsigned mode; | |
313 | ||
314 | for (mode = 0; mode < ARRAY_SIZE(guest_file_open_modes); ++mode) { | |
315 | ccpc *form; | |
316 | ||
317 | form = guest_file_open_modes[mode].forms; | |
318 | while (*form != NULL && strcmp(*form, mode_str) != 0) { | |
319 | ++form; | |
320 | } | |
321 | if (*form != NULL) { | |
322 | break; | |
323 | } | |
324 | } | |
325 | ||
326 | if (mode == ARRAY_SIZE(guest_file_open_modes)) { | |
77dbc81b | 327 | error_setg(errp, "invalid file open mode '%s'", mode_str); |
c689b4f1 LE |
328 | return -1; |
329 | } | |
330 | return guest_file_open_modes[mode].oflag_base | O_NOCTTY | O_NONBLOCK; | |
331 | } | |
332 | ||
333 | #define DEFAULT_NEW_FILE_MODE (S_IRUSR | S_IWUSR | \ | |
334 | S_IRGRP | S_IWGRP | \ | |
335 | S_IROTH | S_IWOTH) | |
336 | ||
337 | static FILE * | |
77dbc81b | 338 | safe_open_or_create(const char *path, const char *mode, Error **errp) |
c689b4f1 | 339 | { |
c689b4f1 | 340 | int oflag; |
69f56c14 MAL |
341 | int fd = -1; |
342 | FILE *f = NULL; | |
c689b4f1 | 343 | |
69f56c14 MAL |
344 | oflag = find_open_flag(mode, errp); |
345 | if (oflag < 0) { | |
346 | goto end; | |
347 | } | |
c689b4f1 | 348 | |
69f56c14 MAL |
349 | /* If the caller wants / allows creation of a new file, we implement it |
350 | * with a two step process: open() + (open() / fchmod()). | |
351 | * | |
352 | * First we insist on creating the file exclusively as a new file. If | |
353 | * that succeeds, we're free to set any file-mode bits on it. (The | |
354 | * motivation is that we want to set those file-mode bits independently | |
355 | * of the current umask.) | |
356 | * | |
357 | * If the exclusive creation fails because the file already exists | |
358 | * (EEXIST is not possible for any other reason), we just attempt to | |
359 | * open the file, but in this case we won't be allowed to change the | |
360 | * file-mode bits on the preexistent file. | |
361 | * | |
362 | * The pathname should never disappear between the two open()s in | |
363 | * practice. If it happens, then someone very likely tried to race us. | |
364 | * In this case just go ahead and report the ENOENT from the second | |
365 | * open() to the caller. | |
366 | * | |
367 | * If the caller wants to open a preexistent file, then the first | |
368 | * open() is decisive and its third argument is ignored, and the second | |
369 | * open() and the fchmod() are never called. | |
370 | */ | |
1a89a17b | 371 | fd = qga_open_cloexec(path, oflag | ((oflag & O_CREAT) ? O_EXCL : 0), 0); |
69f56c14 MAL |
372 | if (fd == -1 && errno == EEXIST) { |
373 | oflag &= ~(unsigned)O_CREAT; | |
1a89a17b | 374 | fd = qga_open_cloexec(path, oflag, 0); |
69f56c14 MAL |
375 | } |
376 | if (fd == -1) { | |
377 | error_setg_errno(errp, errno, | |
378 | "failed to open file '%s' (mode: '%s')", | |
379 | path, mode); | |
380 | goto end; | |
c689b4f1 LE |
381 | } |
382 | ||
69f56c14 MAL |
383 | if ((oflag & O_CREAT) && fchmod(fd, DEFAULT_NEW_FILE_MODE) == -1) { |
384 | error_setg_errno(errp, errno, "failed to set permission " | |
385 | "0%03o on new file '%s' (mode: '%s')", | |
386 | (unsigned)DEFAULT_NEW_FILE_MODE, path, mode); | |
387 | goto end; | |
388 | } | |
389 | ||
390 | f = fdopen(fd, mode); | |
391 | if (f == NULL) { | |
392 | error_setg_errno(errp, errno, "failed to associate stdio stream with " | |
393 | "file descriptor %d, file '%s' (mode: '%s')", | |
394 | fd, path, mode); | |
395 | } | |
396 | ||
397 | end: | |
398 | if (f == NULL && fd != -1) { | |
399 | close(fd); | |
400 | if (oflag & O_CREAT) { | |
401 | unlink(path); | |
402 | } | |
403 | } | |
404 | return f; | |
c689b4f1 LE |
405 | } |
406 | ||
77dbc81b MA |
407 | int64_t qmp_guest_file_open(const char *path, bool has_mode, const char *mode, |
408 | Error **errp) | |
e3d4d252 MR |
409 | { |
410 | FILE *fh; | |
c689b4f1 | 411 | Error *local_err = NULL; |
85b6f6f5 | 412 | int64_t handle; |
e3d4d252 MR |
413 | |
414 | if (!has_mode) { | |
415 | mode = "r"; | |
416 | } | |
417 | slog("guest-file-open called, filepath: %s, mode: %s", path, mode); | |
c689b4f1 LE |
418 | fh = safe_open_or_create(path, mode, &local_err); |
419 | if (local_err != NULL) { | |
77dbc81b | 420 | error_propagate(errp, local_err); |
e3d4d252 MR |
421 | return -1; |
422 | } | |
423 | ||
424 | /* set fd non-blocking to avoid common use cases (like reading from a | |
425 | * named pipe) from hanging the agent | |
426 | */ | |
b0a8f9ad MAL |
427 | if (!g_unix_set_fd_nonblocking(fileno(fh), true, NULL)) { |
428 | fclose(fh); | |
429 | error_setg_errno(errp, errno, "Failed to set FD nonblocking"); | |
430 | return -1; | |
431 | } | |
e3d4d252 | 432 | |
77dbc81b | 433 | handle = guest_file_handle_add(fh, errp); |
a903f40c | 434 | if (handle < 0) { |
39097daf MR |
435 | fclose(fh); |
436 | return -1; | |
437 | } | |
438 | ||
d607a523 | 439 | slog("guest-file-open, handle: %" PRId64, handle); |
39097daf | 440 | return handle; |
e3d4d252 MR |
441 | } |
442 | ||
77dbc81b | 443 | void qmp_guest_file_close(int64_t handle, Error **errp) |
e3d4d252 | 444 | { |
77dbc81b | 445 | GuestFileHandle *gfh = guest_file_handle_find(handle, errp); |
e3d4d252 MR |
446 | int ret; |
447 | ||
d607a523 | 448 | slog("guest-file-close called, handle: %" PRId64, handle); |
e3d4d252 | 449 | if (!gfh) { |
e3d4d252 MR |
450 | return; |
451 | } | |
452 | ||
453 | ret = fclose(gfh->fh); | |
3ac4b7c5 | 454 | if (ret == EOF) { |
77dbc81b | 455 | error_setg_errno(errp, errno, "failed to close handle"); |
e3d4d252 MR |
456 | return; |
457 | } | |
458 | ||
459 | QTAILQ_REMOVE(&guest_file_state.filehandles, gfh, next); | |
7267c094 | 460 | g_free(gfh); |
e3d4d252 MR |
461 | } |
462 | ||
ead83a13 PMD |
463 | GuestFileRead *guest_file_read_unsafe(GuestFileHandle *gfh, |
464 | int64_t count, Error **errp) | |
e3d4d252 | 465 | { |
e3d4d252 MR |
466 | GuestFileRead *read_data = NULL; |
467 | guchar *buf; | |
ead83a13 | 468 | FILE *fh = gfh->fh; |
e3d4d252 MR |
469 | size_t read_count; |
470 | ||
895b00f6 MAL |
471 | /* explicitly flush when switching from writing to reading */ |
472 | if (gfh->state == RW_STATE_WRITING) { | |
473 | int ret = fflush(fh); | |
474 | if (ret == EOF) { | |
475 | error_setg_errno(errp, errno, "failed to flush file"); | |
476 | return NULL; | |
477 | } | |
478 | gfh->state = RW_STATE_NEW; | |
479 | } | |
480 | ||
0697e9ed | 481 | buf = g_malloc0(count + 1); |
e3d4d252 MR |
482 | read_count = fread(buf, 1, count, fh); |
483 | if (ferror(fh)) { | |
77dbc81b | 484 | error_setg_errno(errp, errno, "failed to read file"); |
e3d4d252 MR |
485 | } else { |
486 | buf[read_count] = 0; | |
f3a06403 | 487 | read_data = g_new0(GuestFileRead, 1); |
e3d4d252 MR |
488 | read_data->count = read_count; |
489 | read_data->eof = feof(fh); | |
490 | if (read_count) { | |
491 | read_data->buf_b64 = g_base64_encode(buf, read_count); | |
492 | } | |
895b00f6 | 493 | gfh->state = RW_STATE_READING; |
e3d4d252 | 494 | } |
7267c094 | 495 | g_free(buf); |
e3d4d252 MR |
496 | clearerr(fh); |
497 | ||
498 | return read_data; | |
499 | } | |
500 | ||
501 | GuestFileWrite *qmp_guest_file_write(int64_t handle, const char *buf_b64, | |
77dbc81b MA |
502 | bool has_count, int64_t count, |
503 | Error **errp) | |
e3d4d252 MR |
504 | { |
505 | GuestFileWrite *write_data = NULL; | |
506 | guchar *buf; | |
507 | gsize buf_len; | |
508 | int write_count; | |
77dbc81b | 509 | GuestFileHandle *gfh = guest_file_handle_find(handle, errp); |
e3d4d252 MR |
510 | FILE *fh; |
511 | ||
512 | if (!gfh) { | |
e3d4d252 MR |
513 | return NULL; |
514 | } | |
515 | ||
516 | fh = gfh->fh; | |
895b00f6 MAL |
517 | |
518 | if (gfh->state == RW_STATE_READING) { | |
519 | int ret = fseek(fh, 0, SEEK_CUR); | |
520 | if (ret == -1) { | |
521 | error_setg_errno(errp, errno, "failed to seek file"); | |
522 | return NULL; | |
523 | } | |
524 | gfh->state = RW_STATE_NEW; | |
525 | } | |
526 | ||
920639ca DB |
527 | buf = qbase64_decode(buf_b64, -1, &buf_len, errp); |
528 | if (!buf) { | |
529 | return NULL; | |
530 | } | |
e3d4d252 MR |
531 | |
532 | if (!has_count) { | |
533 | count = buf_len; | |
534 | } else if (count < 0 || count > buf_len) { | |
77dbc81b | 535 | error_setg(errp, "value '%" PRId64 "' is invalid for argument count", |
db3edb66 | 536 | count); |
7267c094 | 537 | g_free(buf); |
e3d4d252 MR |
538 | return NULL; |
539 | } | |
540 | ||
541 | write_count = fwrite(buf, 1, count, fh); | |
542 | if (ferror(fh)) { | |
77dbc81b | 543 | error_setg_errno(errp, errno, "failed to write to file"); |
d607a523 | 544 | slog("guest-file-write failed, handle: %" PRId64, handle); |
e3d4d252 | 545 | } else { |
f3a06403 | 546 | write_data = g_new0(GuestFileWrite, 1); |
e3d4d252 MR |
547 | write_data->count = write_count; |
548 | write_data->eof = feof(fh); | |
895b00f6 | 549 | gfh->state = RW_STATE_WRITING; |
e3d4d252 | 550 | } |
7267c094 | 551 | g_free(buf); |
e3d4d252 MR |
552 | clearerr(fh); |
553 | ||
554 | return write_data; | |
555 | } | |
556 | ||
557 | struct GuestFileSeek *qmp_guest_file_seek(int64_t handle, int64_t offset, | |
0b4b4938 EB |
558 | GuestFileWhence *whence_code, |
559 | Error **errp) | |
e3d4d252 | 560 | { |
77dbc81b | 561 | GuestFileHandle *gfh = guest_file_handle_find(handle, errp); |
e3d4d252 MR |
562 | GuestFileSeek *seek_data = NULL; |
563 | FILE *fh; | |
564 | int ret; | |
0a982b1b | 565 | int whence; |
0b4b4938 | 566 | Error *err = NULL; |
e3d4d252 MR |
567 | |
568 | if (!gfh) { | |
e3d4d252 MR |
569 | return NULL; |
570 | } | |
571 | ||
0a982b1b | 572 | /* We stupidly exposed 'whence':'int' in our qapi */ |
0b4b4938 EB |
573 | whence = ga_parse_whence(whence_code, &err); |
574 | if (err) { | |
575 | error_propagate(errp, err); | |
0a982b1b EB |
576 | return NULL; |
577 | } | |
578 | ||
e3d4d252 MR |
579 | fh = gfh->fh; |
580 | ret = fseek(fh, offset, whence); | |
581 | if (ret == -1) { | |
77dbc81b | 582 | error_setg_errno(errp, errno, "failed to seek file"); |
895b00f6 MAL |
583 | if (errno == ESPIPE) { |
584 | /* file is non-seekable, stdio shouldn't be buffering anyways */ | |
585 | gfh->state = RW_STATE_NEW; | |
586 | } | |
e3d4d252 | 587 | } else { |
10b7c5dd | 588 | seek_data = g_new0(GuestFileSeek, 1); |
e3d4d252 MR |
589 | seek_data->position = ftell(fh); |
590 | seek_data->eof = feof(fh); | |
895b00f6 | 591 | gfh->state = RW_STATE_NEW; |
e3d4d252 MR |
592 | } |
593 | clearerr(fh); | |
594 | ||
595 | return seek_data; | |
596 | } | |
597 | ||
77dbc81b | 598 | void qmp_guest_file_flush(int64_t handle, Error **errp) |
e3d4d252 | 599 | { |
77dbc81b | 600 | GuestFileHandle *gfh = guest_file_handle_find(handle, errp); |
e3d4d252 MR |
601 | FILE *fh; |
602 | int ret; | |
603 | ||
604 | if (!gfh) { | |
e3d4d252 MR |
605 | return; |
606 | } | |
607 | ||
608 | fh = gfh->fh; | |
609 | ret = fflush(fh); | |
610 | if (ret == EOF) { | |
77dbc81b | 611 | error_setg_errno(errp, errno, "failed to flush file"); |
895b00f6 MAL |
612 | } else { |
613 | gfh->state = RW_STATE_NEW; | |
e3d4d252 MR |
614 | } |
615 | } | |
616 | ||
eab5fd59 | 617 | #if defined(CONFIG_FSFREEZE) || defined(CONFIG_FSTRIM) |
518b0d80 | 618 | void free_fs_mount_list(FsMountList *mounts) |
9e8aded4 | 619 | { |
af02203f | 620 | FsMount *mount, *temp; |
9e8aded4 MR |
621 | |
622 | if (!mounts) { | |
623 | return; | |
624 | } | |
625 | ||
626 | QTAILQ_FOREACH_SAFE(mount, mounts, next, temp) { | |
627 | QTAILQ_REMOVE(mounts, mount, next); | |
628 | g_free(mount->dirname); | |
629 | g_free(mount->devtype); | |
630 | g_free(mount); | |
631 | } | |
632 | } | |
eab5fd59 PB |
633 | #endif |
634 | ||
bad0001e AI |
635 | #if defined(CONFIG_FSFREEZE) |
636 | typedef enum { | |
637 | FSFREEZE_HOOK_THAW = 0, | |
638 | FSFREEZE_HOOK_FREEZE, | |
639 | } FsfreezeHookArg; | |
640 | ||
641 | static const char *fsfreeze_hook_arg_string[] = { | |
642 | "thaw", | |
643 | "freeze", | |
644 | }; | |
645 | ||
646 | static void execute_fsfreeze_hook(FsfreezeHookArg arg, Error **errp) | |
647 | { | |
648 | int status; | |
649 | pid_t pid; | |
650 | const char *hook; | |
651 | const char *arg_str = fsfreeze_hook_arg_string[arg]; | |
652 | Error *local_err = NULL; | |
653 | ||
654 | hook = ga_fsfreeze_hook(ga_state); | |
655 | if (!hook) { | |
656 | return; | |
657 | } | |
658 | if (access(hook, X_OK) != 0) { | |
659 | error_setg_errno(errp, errno, "can't access fsfreeze hook '%s'", hook); | |
660 | return; | |
661 | } | |
662 | ||
663 | slog("executing fsfreeze hook with arg '%s'", arg_str); | |
664 | pid = fork(); | |
665 | if (pid == 0) { | |
666 | setsid(); | |
667 | reopen_fd_to_null(0); | |
668 | reopen_fd_to_null(1); | |
669 | reopen_fd_to_null(2); | |
670 | ||
671 | execl(hook, hook, arg_str, NULL); | |
672 | _exit(EXIT_FAILURE); | |
673 | } else if (pid < 0) { | |
674 | error_setg_errno(errp, errno, "failed to create child process"); | |
675 | return; | |
676 | } | |
677 | ||
678 | ga_wait_child(pid, &status, &local_err); | |
679 | if (local_err) { | |
680 | error_propagate(errp, local_err); | |
681 | return; | |
682 | } | |
683 | ||
684 | if (!WIFEXITED(status)) { | |
685 | error_setg(errp, "fsfreeze hook has terminated abnormally"); | |
686 | return; | |
687 | } | |
688 | ||
689 | status = WEXITSTATUS(status); | |
690 | if (status) { | |
691 | error_setg(errp, "fsfreeze hook has failed with status %d", status); | |
692 | return; | |
693 | } | |
694 | } | |
695 | ||
696 | /* | |
697 | * Return status of freeze/thaw | |
698 | */ | |
699 | GuestFsfreezeStatus qmp_guest_fsfreeze_status(Error **errp) | |
700 | { | |
701 | if (ga_is_frozen(ga_state)) { | |
702 | return GUEST_FSFREEZE_STATUS_FROZEN; | |
703 | } | |
704 | ||
705 | return GUEST_FSFREEZE_STATUS_THAWED; | |
706 | } | |
707 | ||
708 | int64_t qmp_guest_fsfreeze_freeze(Error **errp) | |
709 | { | |
710 | return qmp_guest_fsfreeze_freeze_list(false, NULL, errp); | |
711 | } | |
712 | ||
713 | int64_t qmp_guest_fsfreeze_freeze_list(bool has_mountpoints, | |
714 | strList *mountpoints, | |
715 | Error **errp) | |
716 | { | |
717 | int ret; | |
718 | FsMountList mounts; | |
719 | Error *local_err = NULL; | |
720 | ||
721 | slog("guest-fsfreeze called"); | |
722 | ||
723 | execute_fsfreeze_hook(FSFREEZE_HOOK_FREEZE, &local_err); | |
724 | if (local_err) { | |
725 | error_propagate(errp, local_err); | |
726 | return -1; | |
727 | } | |
728 | ||
729 | QTAILQ_INIT(&mounts); | |
730 | if (!build_fs_mount_list(&mounts, &local_err)) { | |
731 | error_propagate(errp, local_err); | |
732 | return -1; | |
733 | } | |
734 | ||
735 | /* cannot risk guest agent blocking itself on a write in this state */ | |
736 | ga_set_frozen(ga_state); | |
737 | ||
738 | ret = qmp_guest_fsfreeze_do_freeze_list(has_mountpoints, mountpoints, | |
739 | mounts, errp); | |
740 | ||
741 | free_fs_mount_list(&mounts); | |
742 | /* We may not issue any FIFREEZE here. | |
743 | * Just unset ga_state here and ready for the next call. | |
744 | */ | |
745 | if (ret == 0) { | |
746 | ga_unset_frozen(ga_state); | |
747 | } else if (ret < 0) { | |
748 | qmp_guest_fsfreeze_thaw(NULL); | |
749 | } | |
750 | return ret; | |
751 | } | |
752 | ||
753 | int64_t qmp_guest_fsfreeze_thaw(Error **errp) | |
754 | { | |
755 | int ret; | |
756 | ||
757 | ret = qmp_guest_fsfreeze_do_thaw(errp); | |
758 | if (ret >= 0) { | |
759 | ga_unset_frozen(ga_state); | |
760 | execute_fsfreeze_hook(FSFREEZE_HOOK_THAW, errp); | |
761 | } else { | |
762 | ret = 0; | |
763 | } | |
764 | ||
765 | return ret; | |
766 | } | |
767 | ||
768 | static void guest_fsfreeze_cleanup(void) | |
769 | { | |
770 | Error *err = NULL; | |
771 | ||
772 | if (ga_is_frozen(ga_state) == GUEST_FSFREEZE_STATUS_FROZEN) { | |
773 | qmp_guest_fsfreeze_thaw(&err); | |
774 | if (err) { | |
775 | slog("failed to clean up frozen filesystems: %s", | |
776 | error_get_pretty(err)); | |
777 | error_free(err); | |
778 | } | |
779 | } | |
780 | } | |
781 | #endif | |
782 | ||
783 | /* linux-specific implementations. avoid this if at all possible. */ | |
784 | #if defined(__linux__) | |
eab5fd59 | 785 | #if defined(CONFIG_FSFREEZE) |
e3d4d252 | 786 | |
46d4c572 TS |
787 | static char *get_pci_driver(char const *syspath, int pathlen, Error **errp) |
788 | { | |
789 | char *path; | |
790 | char *dpath; | |
791 | char *driver = NULL; | |
792 | char buf[PATH_MAX]; | |
793 | ssize_t len; | |
794 | ||
795 | path = g_strndup(syspath, pathlen); | |
796 | dpath = g_strdup_printf("%s/driver", path); | |
797 | len = readlink(dpath, buf, sizeof(buf) - 1); | |
798 | if (len != -1) { | |
799 | buf[len] = 0; | |
3e015d81 | 800 | driver = g_path_get_basename(buf); |
46d4c572 TS |
801 | } |
802 | g_free(dpath); | |
803 | g_free(path); | |
804 | return driver; | |
805 | } | |
806 | ||
807 | static int compare_uint(const void *_a, const void *_b) | |
808 | { | |
809 | unsigned int a = *(unsigned int *)_a; | |
810 | unsigned int b = *(unsigned int *)_b; | |
811 | ||
812 | return a < b ? -1 : a > b ? 1 : 0; | |
813 | } | |
814 | ||
815 | /* Walk the specified sysfs and build a sorted list of host or ata numbers */ | |
816 | static int build_hosts(char const *syspath, char const *host, bool ata, | |
817 | unsigned int *hosts, int hosts_max, Error **errp) | |
818 | { | |
819 | char *path; | |
820 | DIR *dir; | |
821 | struct dirent *entry; | |
822 | int i = 0; | |
823 | ||
824 | path = g_strndup(syspath, host - syspath); | |
825 | dir = opendir(path); | |
826 | if (!dir) { | |
827 | error_setg_errno(errp, errno, "opendir(\"%s\")", path); | |
828 | g_free(path); | |
829 | return -1; | |
830 | } | |
831 | ||
832 | while (i < hosts_max) { | |
833 | entry = readdir(dir); | |
834 | if (!entry) { | |
835 | break; | |
836 | } | |
837 | if (ata && sscanf(entry->d_name, "ata%d", hosts + i) == 1) { | |
838 | ++i; | |
839 | } else if (!ata && sscanf(entry->d_name, "host%d", hosts + i) == 1) { | |
840 | ++i; | |
841 | } | |
842 | } | |
843 | ||
844 | qsort(hosts, i, sizeof(hosts[0]), compare_uint); | |
845 | ||
846 | g_free(path); | |
847 | closedir(dir); | |
848 | return i; | |
849 | } | |
850 | ||
d9fe4f0f TH |
851 | /* |
852 | * Store disk device info for devices on the PCI bus. | |
853 | * Returns true if information has been stored, or false for failure. | |
854 | */ | |
855 | static bool build_guest_fsinfo_for_pci_dev(char const *syspath, | |
856 | GuestDiskAddress *disk, | |
857 | Error **errp) | |
46d4c572 TS |
858 | { |
859 | unsigned int pci[4], host, hosts[8], tgt[3]; | |
860 | int i, nhosts = 0, pcilen; | |
d9fe4f0f | 861 | GuestPCIAddress *pciaddr = disk->pci_controller; |
46d4c572 TS |
862 | bool has_ata = false, has_host = false, has_tgt = false; |
863 | char *p, *q, *driver = NULL; | |
d9fe4f0f | 864 | bool ret = false; |
46d4c572 TS |
865 | |
866 | p = strstr(syspath, "/devices/pci"); | |
867 | if (!p || sscanf(p + 12, "%*x:%*x/%x:%x:%x.%x%n", | |
868 | pci, pci + 1, pci + 2, pci + 3, &pcilen) < 4) { | |
743c71d0 | 869 | g_debug("only pci device is supported: sysfs path '%s'", syspath); |
d9fe4f0f | 870 | return false; |
46d4c572 TS |
871 | } |
872 | ||
743c71d0 MAL |
873 | p += 12 + pcilen; |
874 | while (true) { | |
875 | driver = get_pci_driver(syspath, p - syspath, errp); | |
876 | if (driver && (g_str_equal(driver, "ata_piix") || | |
877 | g_str_equal(driver, "sym53c8xx") || | |
878 | g_str_equal(driver, "virtio-pci") || | |
d48f61c8 ZP |
879 | g_str_equal(driver, "ahci") || |
880 | g_str_equal(driver, "nvme"))) { | |
743c71d0 MAL |
881 | break; |
882 | } | |
883 | ||
bb23a736 | 884 | g_free(driver); |
743c71d0 MAL |
885 | if (sscanf(p, "/%x:%x:%x.%x%n", |
886 | pci, pci + 1, pci + 2, pci + 3, &pcilen) == 4) { | |
887 | p += pcilen; | |
888 | continue; | |
889 | } | |
890 | ||
891 | g_debug("unsupported driver or sysfs path '%s'", syspath); | |
d9fe4f0f | 892 | return false; |
46d4c572 TS |
893 | } |
894 | ||
895 | p = strstr(syspath, "/target"); | |
896 | if (p && sscanf(p + 7, "%*u:%*u:%*u/%*u:%u:%u:%u", | |
897 | tgt, tgt + 1, tgt + 2) == 3) { | |
898 | has_tgt = true; | |
899 | } | |
900 | ||
901 | p = strstr(syspath, "/ata"); | |
902 | if (p) { | |
903 | q = p + 4; | |
904 | has_ata = true; | |
905 | } else { | |
906 | p = strstr(syspath, "/host"); | |
907 | q = p + 5; | |
908 | } | |
909 | if (p && sscanf(q, "%u", &host) == 1) { | |
910 | has_host = true; | |
911 | nhosts = build_hosts(syspath, p, has_ata, hosts, | |
01a6df1b | 912 | ARRAY_SIZE(hosts), errp); |
46d4c572 TS |
913 | if (nhosts < 0) { |
914 | goto cleanup; | |
915 | } | |
916 | } | |
917 | ||
46d4c572 TS |
918 | pciaddr->domain = pci[0]; |
919 | pciaddr->bus = pci[1]; | |
920 | pciaddr->slot = pci[2]; | |
921 | pciaddr->function = pci[3]; | |
922 | ||
46d4c572 TS |
923 | if (strcmp(driver, "ata_piix") == 0) { |
924 | /* a host per ide bus, target*:0:<unit>:0 */ | |
925 | if (!has_host || !has_tgt) { | |
926 | g_debug("invalid sysfs path '%s' (driver '%s')", syspath, driver); | |
927 | goto cleanup; | |
928 | } | |
929 | for (i = 0; i < nhosts; i++) { | |
930 | if (host == hosts[i]) { | |
931 | disk->bus_type = GUEST_DISK_BUS_TYPE_IDE; | |
932 | disk->bus = i; | |
933 | disk->unit = tgt[1]; | |
934 | break; | |
935 | } | |
936 | } | |
937 | if (i >= nhosts) { | |
938 | g_debug("no host for '%s' (driver '%s')", syspath, driver); | |
939 | goto cleanup; | |
940 | } | |
941 | } else if (strcmp(driver, "sym53c8xx") == 0) { | |
942 | /* scsi(LSI Logic): target*:0:<unit>:0 */ | |
943 | if (!has_tgt) { | |
944 | g_debug("invalid sysfs path '%s' (driver '%s')", syspath, driver); | |
945 | goto cleanup; | |
946 | } | |
947 | disk->bus_type = GUEST_DISK_BUS_TYPE_SCSI; | |
948 | disk->unit = tgt[1]; | |
949 | } else if (strcmp(driver, "virtio-pci") == 0) { | |
950 | if (has_tgt) { | |
951 | /* virtio-scsi: target*:0:0:<unit> */ | |
952 | disk->bus_type = GUEST_DISK_BUS_TYPE_SCSI; | |
953 | disk->unit = tgt[2]; | |
954 | } else { | |
955 | /* virtio-blk: 1 disk per 1 device */ | |
956 | disk->bus_type = GUEST_DISK_BUS_TYPE_VIRTIO; | |
957 | } | |
958 | } else if (strcmp(driver, "ahci") == 0) { | |
959 | /* ahci: 1 host per 1 unit */ | |
960 | if (!has_host || !has_tgt) { | |
961 | g_debug("invalid sysfs path '%s' (driver '%s')", syspath, driver); | |
962 | goto cleanup; | |
963 | } | |
964 | for (i = 0; i < nhosts; i++) { | |
965 | if (host == hosts[i]) { | |
966 | disk->unit = i; | |
967 | disk->bus_type = GUEST_DISK_BUS_TYPE_SATA; | |
968 | break; | |
969 | } | |
970 | } | |
971 | if (i >= nhosts) { | |
972 | g_debug("no host for '%s' (driver '%s')", syspath, driver); | |
973 | goto cleanup; | |
974 | } | |
d48f61c8 ZP |
975 | } else if (strcmp(driver, "nvme") == 0) { |
976 | disk->bus_type = GUEST_DISK_BUS_TYPE_NVME; | |
46d4c572 TS |
977 | } else { |
978 | g_debug("unknown driver '%s' (sysfs path '%s')", driver, syspath); | |
979 | goto cleanup; | |
980 | } | |
981 | ||
d9fe4f0f | 982 | ret = true; |
46d4c572 TS |
983 | |
984 | cleanup: | |
46d4c572 | 985 | g_free(driver); |
d9fe4f0f TH |
986 | return ret; |
987 | } | |
988 | ||
23843c12 TH |
989 | /* |
990 | * Store disk device info for non-PCI virtio devices (for example s390x | |
991 | * channel I/O devices). Returns true if information has been stored, or | |
992 | * false for failure. | |
993 | */ | |
994 | static bool build_guest_fsinfo_for_nonpci_virtio(char const *syspath, | |
995 | GuestDiskAddress *disk, | |
996 | Error **errp) | |
997 | { | |
998 | unsigned int tgt[3]; | |
999 | char *p; | |
1000 | ||
1001 | if (!strstr(syspath, "/virtio") || !strstr(syspath, "/block")) { | |
1002 | g_debug("Unsupported virtio device '%s'", syspath); | |
1003 | return false; | |
1004 | } | |
1005 | ||
1006 | p = strstr(syspath, "/target"); | |
1007 | if (p && sscanf(p + 7, "%*u:%*u:%*u/%*u:%u:%u:%u", | |
1008 | &tgt[0], &tgt[1], &tgt[2]) == 3) { | |
1009 | /* virtio-scsi: target*:0:<target>:<unit> */ | |
1010 | disk->bus_type = GUEST_DISK_BUS_TYPE_SCSI; | |
1011 | disk->bus = tgt[0]; | |
1012 | disk->target = tgt[1]; | |
1013 | disk->unit = tgt[2]; | |
1014 | } else { | |
1015 | /* virtio-blk: 1 disk per 1 device */ | |
1016 | disk->bus_type = GUEST_DISK_BUS_TYPE_VIRTIO; | |
1017 | } | |
1018 | ||
1019 | return true; | |
1020 | } | |
1021 | ||
5b723a5d TH |
1022 | /* |
1023 | * Store disk device info for CCW devices (s390x channel I/O devices). | |
1024 | * Returns true if information has been stored, or false for failure. | |
1025 | */ | |
1026 | static bool build_guest_fsinfo_for_ccw_dev(char const *syspath, | |
1027 | GuestDiskAddress *disk, | |
1028 | Error **errp) | |
1029 | { | |
1030 | unsigned int cssid, ssid, subchno, devno; | |
1031 | char *p; | |
1032 | ||
1033 | p = strstr(syspath, "/devices/css"); | |
1034 | if (!p || sscanf(p + 12, "%*x/%x.%x.%x/%*x.%*x.%x/", | |
1035 | &cssid, &ssid, &subchno, &devno) < 4) { | |
1036 | g_debug("could not parse ccw device sysfs path: %s", syspath); | |
1037 | return false; | |
1038 | } | |
1039 | ||
1040 | disk->has_ccw_address = true; | |
1041 | disk->ccw_address = g_new0(GuestCCWAddress, 1); | |
1042 | disk->ccw_address->cssid = cssid; | |
1043 | disk->ccw_address->ssid = ssid; | |
1044 | disk->ccw_address->subchno = subchno; | |
1045 | disk->ccw_address->devno = devno; | |
1046 | ||
1047 | if (strstr(p, "/virtio")) { | |
1048 | build_guest_fsinfo_for_nonpci_virtio(syspath, disk, errp); | |
1049 | } | |
1050 | ||
1051 | return true; | |
1052 | } | |
1053 | ||
d9fe4f0f TH |
1054 | /* Store disk device info specified by @sysfs into @fs */ |
1055 | static void build_guest_fsinfo_for_real_device(char const *syspath, | |
1056 | GuestFilesystemInfo *fs, | |
1057 | Error **errp) | |
1058 | { | |
1059 | GuestDiskAddress *disk; | |
1060 | GuestPCIAddress *pciaddr; | |
d9fe4f0f | 1061 | bool has_hwinf; |
43dadc43 TH |
1062 | #ifdef CONFIG_LIBUDEV |
1063 | struct udev *udev = NULL; | |
1064 | struct udev_device *udevice = NULL; | |
1065 | #endif | |
d9fe4f0f TH |
1066 | |
1067 | pciaddr = g_new0(GuestPCIAddress, 1); | |
43dadc43 TH |
1068 | pciaddr->domain = -1; /* -1 means field is invalid */ |
1069 | pciaddr->bus = -1; | |
1070 | pciaddr->slot = -1; | |
1071 | pciaddr->function = -1; | |
d9fe4f0f TH |
1072 | |
1073 | disk = g_new0(GuestDiskAddress, 1); | |
1074 | disk->pci_controller = pciaddr; | |
43dadc43 | 1075 | disk->bus_type = GUEST_DISK_BUS_TYPE_UNKNOWN; |
d9fe4f0f | 1076 | |
43dadc43 TH |
1077 | #ifdef CONFIG_LIBUDEV |
1078 | udev = udev_new(); | |
1079 | udevice = udev_device_new_from_syspath(udev, syspath); | |
1080 | if (udev == NULL || udevice == NULL) { | |
1081 | g_debug("failed to query udev"); | |
1082 | } else { | |
1083 | const char *devnode, *serial; | |
1084 | devnode = udev_device_get_devnode(udevice); | |
1085 | if (devnode != NULL) { | |
1086 | disk->dev = g_strdup(devnode); | |
1087 | disk->has_dev = true; | |
1088 | } | |
1089 | serial = udev_device_get_property_value(udevice, "ID_SERIAL"); | |
1090 | if (serial != NULL && *serial != 0) { | |
1091 | disk->serial = g_strdup(serial); | |
1092 | disk->has_serial = true; | |
1093 | } | |
1094 | } | |
1095 | ||
1096 | udev_unref(udev); | |
1097 | udev_device_unref(udevice); | |
1098 | #endif | |
1099 | ||
23843c12 TH |
1100 | if (strstr(syspath, "/devices/pci")) { |
1101 | has_hwinf = build_guest_fsinfo_for_pci_dev(syspath, disk, errp); | |
5b723a5d TH |
1102 | } else if (strstr(syspath, "/devices/css")) { |
1103 | has_hwinf = build_guest_fsinfo_for_ccw_dev(syspath, disk, errp); | |
23843c12 TH |
1104 | } else if (strstr(syspath, "/virtio")) { |
1105 | has_hwinf = build_guest_fsinfo_for_nonpci_virtio(syspath, disk, errp); | |
1106 | } else { | |
1107 | g_debug("Unsupported device type for '%s'", syspath); | |
1108 | has_hwinf = false; | |
1109 | } | |
d9fe4f0f | 1110 | |
43dadc43 | 1111 | if (has_hwinf || disk->has_dev || disk->has_serial) { |
54aa3de7 | 1112 | QAPI_LIST_PREPEND(fs->disk, disk); |
d9fe4f0f | 1113 | } else { |
54aa3de7 | 1114 | qapi_free_GuestDiskAddress(disk); |
d9fe4f0f | 1115 | } |
46d4c572 TS |
1116 | } |
1117 | ||
1118 | static void build_guest_fsinfo_for_device(char const *devpath, | |
1119 | GuestFilesystemInfo *fs, | |
1120 | Error **errp); | |
1121 | ||
1122 | /* Store a list of slave devices of virtual volume specified by @syspath into | |
1123 | * @fs */ | |
1124 | static void build_guest_fsinfo_for_virtual_device(char const *syspath, | |
1125 | GuestFilesystemInfo *fs, | |
1126 | Error **errp) | |
1127 | { | |
292743d9 | 1128 | Error *err = NULL; |
46d4c572 TS |
1129 | DIR *dir; |
1130 | char *dirpath; | |
e668d1b8 | 1131 | struct dirent *entry; |
46d4c572 TS |
1132 | |
1133 | dirpath = g_strdup_printf("%s/slaves", syspath); | |
1134 | dir = opendir(dirpath); | |
1135 | if (!dir) { | |
8251a72f MR |
1136 | if (errno != ENOENT) { |
1137 | error_setg_errno(errp, errno, "opendir(\"%s\")", dirpath); | |
1138 | } | |
46d4c572 TS |
1139 | g_free(dirpath); |
1140 | return; | |
1141 | } | |
46d4c572 TS |
1142 | |
1143 | for (;;) { | |
e668d1b8 HZ |
1144 | errno = 0; |
1145 | entry = readdir(dir); | |
1146 | if (entry == NULL) { | |
1147 | if (errno) { | |
1148 | error_setg_errno(errp, errno, "readdir(\"%s\")", dirpath); | |
1149 | } | |
46d4c572 TS |
1150 | break; |
1151 | } | |
1152 | ||
e668d1b8 HZ |
1153 | if (entry->d_type == DT_LNK) { |
1154 | char *path; | |
1155 | ||
1156 | g_debug(" slave device '%s'", entry->d_name); | |
1157 | path = g_strdup_printf("%s/slaves/%s", syspath, entry->d_name); | |
292743d9 | 1158 | build_guest_fsinfo_for_device(path, fs, &err); |
e668d1b8 | 1159 | g_free(path); |
46d4c572 | 1160 | |
292743d9 MA |
1161 | if (err) { |
1162 | error_propagate(errp, err); | |
46d4c572 TS |
1163 | break; |
1164 | } | |
1165 | } | |
1166 | } | |
1167 | ||
e668d1b8 | 1168 | g_free(dirpath); |
46d4c572 TS |
1169 | closedir(dir); |
1170 | } | |
1171 | ||
fed39564 TG |
1172 | static bool is_disk_virtual(const char *devpath, Error **errp) |
1173 | { | |
1174 | g_autofree char *syspath = realpath(devpath, NULL); | |
1175 | ||
1176 | if (!syspath) { | |
1177 | error_setg_errno(errp, errno, "realpath(\"%s\")", devpath); | |
1178 | return false; | |
1179 | } | |
1180 | return strstr(syspath, "/devices/virtual/block/") != NULL; | |
1181 | } | |
1182 | ||
46d4c572 TS |
1183 | /* Dispatch to functions for virtual/real device */ |
1184 | static void build_guest_fsinfo_for_device(char const *devpath, | |
1185 | GuestFilesystemInfo *fs, | |
1186 | Error **errp) | |
1187 | { | |
fed39564 TG |
1188 | ERRP_GUARD(); |
1189 | g_autofree char *syspath = NULL; | |
1190 | bool is_virtual = false; | |
46d4c572 | 1191 | |
fed39564 | 1192 | syspath = realpath(devpath, NULL); |
46d4c572 | 1193 | if (!syspath) { |
bbb0151c JS |
1194 | if (errno != ENOENT) { |
1195 | error_setg_errno(errp, errno, "realpath(\"%s\")", devpath); | |
1196 | return; | |
1197 | } | |
1198 | ||
1199 | /* ENOENT: This devpath may not exist because of container config */ | |
1200 | if (!fs->name) { | |
1201 | fs->name = g_path_get_basename(devpath); | |
1202 | } | |
46d4c572 TS |
1203 | return; |
1204 | } | |
1205 | ||
1206 | if (!fs->name) { | |
3e015d81 | 1207 | fs->name = g_path_get_basename(syspath); |
46d4c572 TS |
1208 | } |
1209 | ||
1210 | g_debug(" parse sysfs path '%s'", syspath); | |
fed39564 TG |
1211 | is_virtual = is_disk_virtual(syspath, errp); |
1212 | if (*errp != NULL) { | |
1213 | return; | |
1214 | } | |
1215 | if (is_virtual) { | |
46d4c572 TS |
1216 | build_guest_fsinfo_for_virtual_device(syspath, fs, errp); |
1217 | } else { | |
1218 | build_guest_fsinfo_for_real_device(syspath, fs, errp); | |
1219 | } | |
fed39564 TG |
1220 | } |
1221 | ||
1222 | #ifdef CONFIG_LIBUDEV | |
1223 | ||
1224 | /* | |
1225 | * Wrapper around build_guest_fsinfo_for_device() for getting just | |
1226 | * the disk address. | |
1227 | */ | |
1228 | static GuestDiskAddress *get_disk_address(const char *syspath, Error **errp) | |
1229 | { | |
1230 | g_autoptr(GuestFilesystemInfo) fs = NULL; | |
46d4c572 | 1231 | |
fed39564 TG |
1232 | fs = g_new0(GuestFilesystemInfo, 1); |
1233 | build_guest_fsinfo_for_device(syspath, fs, errp); | |
1234 | if (fs->disk != NULL) { | |
1235 | return g_steal_pointer(&fs->disk->value); | |
1236 | } | |
1237 | return NULL; | |
46d4c572 TS |
1238 | } |
1239 | ||
fed39564 TG |
1240 | static char *get_alias_for_syspath(const char *syspath) |
1241 | { | |
1242 | struct udev *udev = NULL; | |
1243 | struct udev_device *udevice = NULL; | |
1244 | char *ret = NULL; | |
1245 | ||
1246 | udev = udev_new(); | |
1247 | if (udev == NULL) { | |
1248 | g_debug("failed to query udev"); | |
1249 | goto out; | |
1250 | } | |
1251 | udevice = udev_device_new_from_syspath(udev, syspath); | |
1252 | if (udevice == NULL) { | |
1253 | g_debug("failed to query udev for path: %s", syspath); | |
1254 | goto out; | |
1255 | } else { | |
1256 | const char *alias = udev_device_get_property_value( | |
1257 | udevice, "DM_NAME"); | |
1258 | /* | |
1259 | * NULL means there was an error and empty string means there is no | |
1260 | * alias. In case of no alias we return NULL instead of empty string. | |
1261 | */ | |
1262 | if (alias == NULL) { | |
1263 | g_debug("failed to query udev for device alias for: %s", | |
1264 | syspath); | |
1265 | } else if (*alias != 0) { | |
1266 | ret = g_strdup(alias); | |
1267 | } | |
1268 | } | |
1269 | ||
1270 | out: | |
1271 | udev_unref(udev); | |
1272 | udev_device_unref(udevice); | |
1273 | return ret; | |
1274 | } | |
1275 | ||
1276 | static char *get_device_for_syspath(const char *syspath) | |
1277 | { | |
1278 | struct udev *udev = NULL; | |
1279 | struct udev_device *udevice = NULL; | |
1280 | char *ret = NULL; | |
1281 | ||
1282 | udev = udev_new(); | |
1283 | if (udev == NULL) { | |
1284 | g_debug("failed to query udev"); | |
1285 | goto out; | |
1286 | } | |
1287 | udevice = udev_device_new_from_syspath(udev, syspath); | |
1288 | if (udevice == NULL) { | |
1289 | g_debug("failed to query udev for path: %s", syspath); | |
1290 | goto out; | |
1291 | } else { | |
1292 | ret = g_strdup(udev_device_get_devnode(udevice)); | |
1293 | } | |
1294 | ||
1295 | out: | |
1296 | udev_unref(udev); | |
1297 | udev_device_unref(udevice); | |
1298 | return ret; | |
1299 | } | |
1300 | ||
1301 | static void get_disk_deps(const char *disk_dir, GuestDiskInfo *disk) | |
1302 | { | |
1303 | g_autofree char *deps_dir = NULL; | |
1304 | const gchar *dep; | |
1305 | GDir *dp_deps = NULL; | |
1306 | ||
1307 | /* List dependent disks */ | |
1308 | deps_dir = g_strdup_printf("%s/slaves", disk_dir); | |
1309 | g_debug(" listing entries in: %s", deps_dir); | |
1310 | dp_deps = g_dir_open(deps_dir, 0, NULL); | |
1311 | if (dp_deps == NULL) { | |
1312 | g_debug("failed to list entries in %s", deps_dir); | |
1313 | return; | |
1314 | } | |
a8aa94b5 | 1315 | disk->has_dependencies = true; |
fed39564 TG |
1316 | while ((dep = g_dir_read_name(dp_deps)) != NULL) { |
1317 | g_autofree char *dep_dir = NULL; | |
fed39564 TG |
1318 | char *dev_name; |
1319 | ||
1320 | /* Add dependent disks */ | |
1321 | dep_dir = g_strdup_printf("%s/%s", deps_dir, dep); | |
1322 | dev_name = get_device_for_syspath(dep_dir); | |
1323 | if (dev_name != NULL) { | |
1324 | g_debug(" adding dependent device: %s", dev_name); | |
54aa3de7 | 1325 | QAPI_LIST_PREPEND(disk->dependencies, dev_name); |
fed39564 TG |
1326 | } |
1327 | } | |
1328 | g_dir_close(dp_deps); | |
1329 | } | |
1330 | ||
1331 | /* | |
1332 | * Detect partitions subdirectory, name is "<disk_name><number>" or | |
1333 | * "<disk_name>p<number>" | |
1334 | * | |
1335 | * @disk_name -- last component of /sys path (e.g. sda) | |
1336 | * @disk_dir -- sys path of the disk (e.g. /sys/block/sda) | |
1337 | * @disk_dev -- device node of the disk (e.g. /dev/sda) | |
1338 | */ | |
1339 | static GuestDiskInfoList *get_disk_partitions( | |
1340 | GuestDiskInfoList *list, | |
1341 | const char *disk_name, const char *disk_dir, | |
1342 | const char *disk_dev) | |
1343 | { | |
54aa3de7 | 1344 | GuestDiskInfoList *ret = list; |
fed39564 TG |
1345 | struct dirent *de_disk; |
1346 | DIR *dp_disk = NULL; | |
1347 | size_t len = strlen(disk_name); | |
1348 | ||
1349 | dp_disk = opendir(disk_dir); | |
1350 | while ((de_disk = readdir(dp_disk)) != NULL) { | |
1351 | g_autofree char *partition_dir = NULL; | |
1352 | char *dev_name; | |
1353 | GuestDiskInfo *partition; | |
1354 | ||
1355 | if (!(de_disk->d_type & DT_DIR)) { | |
1356 | continue; | |
1357 | } | |
1358 | ||
1359 | if (!(strncmp(disk_name, de_disk->d_name, len) == 0 && | |
1360 | ((*(de_disk->d_name + len) == 'p' && | |
1361 | isdigit(*(de_disk->d_name + len + 1))) || | |
1362 | isdigit(*(de_disk->d_name + len))))) { | |
1363 | continue; | |
1364 | } | |
1365 | ||
1366 | partition_dir = g_strdup_printf("%s/%s", | |
1367 | disk_dir, de_disk->d_name); | |
1368 | dev_name = get_device_for_syspath(partition_dir); | |
1369 | if (dev_name == NULL) { | |
1370 | g_debug("Failed to get device name for syspath: %s", | |
1371 | disk_dir); | |
1372 | continue; | |
1373 | } | |
1374 | partition = g_new0(GuestDiskInfo, 1); | |
1375 | partition->name = dev_name; | |
1376 | partition->partition = true; | |
bac9b87b | 1377 | partition->has_dependencies = true; |
fed39564 | 1378 | /* Add parent disk as dependent for easier tracking of hierarchy */ |
54aa3de7 | 1379 | QAPI_LIST_PREPEND(partition->dependencies, g_strdup(disk_dev)); |
fed39564 | 1380 | |
54aa3de7 | 1381 | QAPI_LIST_PREPEND(ret, partition); |
fed39564 TG |
1382 | } |
1383 | closedir(dp_disk); | |
1384 | ||
1385 | return ret; | |
1386 | } | |
1387 | ||
22668881 ZP |
1388 | static void get_nvme_smart(GuestDiskInfo *disk) |
1389 | { | |
1390 | int fd; | |
1391 | GuestNVMeSmart *smart; | |
1392 | NvmeSmartLog log = {0}; | |
1393 | struct nvme_admin_cmd cmd = { | |
1394 | .opcode = NVME_ADM_CMD_GET_LOG_PAGE, | |
1395 | .nsid = NVME_NSID_BROADCAST, | |
1396 | .addr = (uintptr_t)&log, | |
1397 | .data_len = sizeof(log), | |
1398 | .cdw10 = NVME_LOG_SMART_INFO | (1 << 15) /* RAE bit */ | |
1399 | | (((sizeof(log) >> 2) - 1) << 16) | |
1400 | }; | |
1401 | ||
b9947c9c | 1402 | fd = qga_open_cloexec(disk->name, O_RDONLY, 0); |
22668881 ZP |
1403 | if (fd == -1) { |
1404 | g_debug("Failed to open device: %s: %s", disk->name, g_strerror(errno)); | |
1405 | return; | |
1406 | } | |
1407 | ||
1408 | if (ioctl(fd, NVME_IOCTL_ADMIN_CMD, &cmd)) { | |
1409 | g_debug("Failed to get smart: %s: %s", disk->name, g_strerror(errno)); | |
1410 | close(fd); | |
1411 | return; | |
1412 | } | |
1413 | ||
1414 | disk->has_smart = true; | |
1415 | disk->smart = g_new0(GuestDiskSmart, 1); | |
1416 | disk->smart->type = GUEST_DISK_BUS_TYPE_NVME; | |
1417 | ||
1418 | smart = &disk->smart->u.nvme; | |
1419 | smart->critical_warning = log.critical_warning; | |
1420 | smart->temperature = lduw_le_p(&log.temperature); /* unaligned field */ | |
1421 | smart->available_spare = log.available_spare; | |
1422 | smart->available_spare_threshold = log.available_spare_threshold; | |
1423 | smart->percentage_used = log.percentage_used; | |
1424 | smart->data_units_read_lo = le64_to_cpu(log.data_units_read[0]); | |
1425 | smart->data_units_read_hi = le64_to_cpu(log.data_units_read[1]); | |
1426 | smart->data_units_written_lo = le64_to_cpu(log.data_units_written[0]); | |
1427 | smart->data_units_written_hi = le64_to_cpu(log.data_units_written[1]); | |
1428 | smart->host_read_commands_lo = le64_to_cpu(log.host_read_commands[0]); | |
1429 | smart->host_read_commands_hi = le64_to_cpu(log.host_read_commands[1]); | |
1430 | smart->host_write_commands_lo = le64_to_cpu(log.host_write_commands[0]); | |
1431 | smart->host_write_commands_hi = le64_to_cpu(log.host_write_commands[1]); | |
1432 | smart->controller_busy_time_lo = le64_to_cpu(log.controller_busy_time[0]); | |
1433 | smart->controller_busy_time_hi = le64_to_cpu(log.controller_busy_time[1]); | |
1434 | smart->power_cycles_lo = le64_to_cpu(log.power_cycles[0]); | |
1435 | smart->power_cycles_hi = le64_to_cpu(log.power_cycles[1]); | |
1436 | smart->power_on_hours_lo = le64_to_cpu(log.power_on_hours[0]); | |
1437 | smart->power_on_hours_hi = le64_to_cpu(log.power_on_hours[1]); | |
1438 | smart->unsafe_shutdowns_lo = le64_to_cpu(log.unsafe_shutdowns[0]); | |
1439 | smart->unsafe_shutdowns_hi = le64_to_cpu(log.unsafe_shutdowns[1]); | |
1440 | smart->media_errors_lo = le64_to_cpu(log.media_errors[0]); | |
1441 | smart->media_errors_hi = le64_to_cpu(log.media_errors[1]); | |
1442 | smart->number_of_error_log_entries_lo = | |
1443 | le64_to_cpu(log.number_of_error_log_entries[0]); | |
1444 | smart->number_of_error_log_entries_hi = | |
1445 | le64_to_cpu(log.number_of_error_log_entries[1]); | |
1446 | ||
1447 | close(fd); | |
1448 | } | |
1449 | ||
1450 | static void get_disk_smart(GuestDiskInfo *disk) | |
1451 | { | |
1452 | if (disk->has_address | |
1453 | && (disk->address->bus_type == GUEST_DISK_BUS_TYPE_NVME)) { | |
1454 | get_nvme_smart(disk); | |
1455 | } | |
1456 | } | |
1457 | ||
fed39564 TG |
1458 | GuestDiskInfoList *qmp_guest_get_disks(Error **errp) |
1459 | { | |
54aa3de7 | 1460 | GuestDiskInfoList *ret = NULL; |
fed39564 TG |
1461 | GuestDiskInfo *disk; |
1462 | DIR *dp = NULL; | |
1463 | struct dirent *de = NULL; | |
1464 | ||
1465 | g_debug("listing /sys/block directory"); | |
1466 | dp = opendir("/sys/block"); | |
1467 | if (dp == NULL) { | |
1468 | error_setg_errno(errp, errno, "Can't open directory \"/sys/block\""); | |
1469 | return NULL; | |
1470 | } | |
1471 | while ((de = readdir(dp)) != NULL) { | |
1472 | g_autofree char *disk_dir = NULL, *line = NULL, | |
1473 | *size_path = NULL; | |
1474 | char *dev_name; | |
1475 | Error *local_err = NULL; | |
1476 | if (de->d_type != DT_LNK) { | |
1477 | g_debug(" skipping entry: %s", de->d_name); | |
1478 | continue; | |
1479 | } | |
1480 | ||
1481 | /* Check size and skip zero-sized disks */ | |
1482 | g_debug(" checking disk size"); | |
1483 | size_path = g_strdup_printf("/sys/block/%s/size", de->d_name); | |
1484 | if (!g_file_get_contents(size_path, &line, NULL, NULL)) { | |
1485 | g_debug(" failed to read disk size"); | |
1486 | continue; | |
1487 | } | |
1488 | if (g_strcmp0(line, "0\n") == 0) { | |
1489 | g_debug(" skipping zero-sized disk"); | |
1490 | continue; | |
1491 | } | |
1492 | ||
1493 | g_debug(" adding %s", de->d_name); | |
1494 | disk_dir = g_strdup_printf("/sys/block/%s", de->d_name); | |
1495 | dev_name = get_device_for_syspath(disk_dir); | |
1496 | if (dev_name == NULL) { | |
1497 | g_debug("Failed to get device name for syspath: %s", | |
1498 | disk_dir); | |
1499 | continue; | |
1500 | } | |
1501 | disk = g_new0(GuestDiskInfo, 1); | |
1502 | disk->name = dev_name; | |
1503 | disk->partition = false; | |
1504 | disk->alias = get_alias_for_syspath(disk_dir); | |
1505 | disk->has_alias = (disk->alias != NULL); | |
54aa3de7 | 1506 | QAPI_LIST_PREPEND(ret, disk); |
fed39564 TG |
1507 | |
1508 | /* Get address for non-virtual devices */ | |
1509 | bool is_virtual = is_disk_virtual(disk_dir, &local_err); | |
1510 | if (local_err != NULL) { | |
1511 | g_debug(" failed to check disk path, ignoring error: %s", | |
1512 | error_get_pretty(local_err)); | |
1513 | error_free(local_err); | |
1514 | local_err = NULL; | |
1515 | /* Don't try to get the address */ | |
1516 | is_virtual = true; | |
1517 | } | |
1518 | if (!is_virtual) { | |
1519 | disk->address = get_disk_address(disk_dir, &local_err); | |
1520 | if (local_err != NULL) { | |
1521 | g_debug(" failed to get device info, ignoring error: %s", | |
1522 | error_get_pretty(local_err)); | |
1523 | error_free(local_err); | |
1524 | local_err = NULL; | |
1525 | } else if (disk->address != NULL) { | |
1526 | disk->has_address = true; | |
1527 | } | |
1528 | } | |
1529 | ||
1530 | get_disk_deps(disk_dir, disk); | |
22668881 | 1531 | get_disk_smart(disk); |
fed39564 TG |
1532 | ret = get_disk_partitions(ret, de->d_name, disk_dir, dev_name); |
1533 | } | |
b1b9ab1c MR |
1534 | |
1535 | closedir(dp); | |
1536 | ||
fed39564 TG |
1537 | return ret; |
1538 | } | |
1539 | ||
1540 | #else | |
1541 | ||
1542 | GuestDiskInfoList *qmp_guest_get_disks(Error **errp) | |
1543 | { | |
1544 | error_setg(errp, QERR_UNSUPPORTED); | |
1545 | return NULL; | |
1546 | } | |
1547 | ||
1548 | #endif | |
1549 | ||
46d4c572 TS |
1550 | /* Return a list of the disk device(s)' info which @mount lies on */ |
1551 | static GuestFilesystemInfo *build_guest_fsinfo(struct FsMount *mount, | |
1552 | Error **errp) | |
1553 | { | |
1554 | GuestFilesystemInfo *fs = g_malloc0(sizeof(*fs)); | |
25b5ff1a CH |
1555 | struct statvfs buf; |
1556 | unsigned long used, nonroot_total, fr_size; | |
46d4c572 TS |
1557 | char *devpath = g_strdup_printf("/sys/dev/block/%u:%u", |
1558 | mount->devmajor, mount->devminor); | |
1559 | ||
1560 | fs->mountpoint = g_strdup(mount->dirname); | |
1561 | fs->type = g_strdup(mount->devtype); | |
1562 | build_guest_fsinfo_for_device(devpath, fs, errp); | |
1563 | ||
25b5ff1a CH |
1564 | if (statvfs(fs->mountpoint, &buf) == 0) { |
1565 | fr_size = buf.f_frsize; | |
1566 | used = buf.f_blocks - buf.f_bfree; | |
1567 | nonroot_total = used + buf.f_bavail; | |
1568 | fs->used_bytes = used * fr_size; | |
1569 | fs->total_bytes = nonroot_total * fr_size; | |
1570 | ||
1571 | fs->has_total_bytes = true; | |
1572 | fs->has_used_bytes = true; | |
1573 | } | |
1574 | ||
46d4c572 | 1575 | g_free(devpath); |
25b5ff1a | 1576 | |
46d4c572 TS |
1577 | return fs; |
1578 | } | |
1579 | ||
1580 | GuestFilesystemInfoList *qmp_guest_get_fsinfo(Error **errp) | |
1581 | { | |
1582 | FsMountList mounts; | |
1583 | struct FsMount *mount; | |
54aa3de7 | 1584 | GuestFilesystemInfoList *ret = NULL; |
46d4c572 TS |
1585 | Error *local_err = NULL; |
1586 | ||
1587 | QTAILQ_INIT(&mounts); | |
561bfcb6 | 1588 | if (!build_fs_mount_list(&mounts, &local_err)) { |
46d4c572 TS |
1589 | error_propagate(errp, local_err); |
1590 | return NULL; | |
1591 | } | |
1592 | ||
1593 | QTAILQ_FOREACH(mount, &mounts, next) { | |
1594 | g_debug("Building guest fsinfo for '%s'", mount->dirname); | |
1595 | ||
54aa3de7 | 1596 | QAPI_LIST_PREPEND(ret, build_guest_fsinfo(mount, &local_err)); |
46d4c572 TS |
1597 | if (local_err) { |
1598 | error_propagate(errp, local_err); | |
1599 | qapi_free_GuestFilesystemInfoList(ret); | |
1600 | ret = NULL; | |
1601 | break; | |
1602 | } | |
1603 | } | |
1604 | ||
1605 | free_fs_mount_list(&mounts); | |
1606 | return ret; | |
1607 | } | |
e72c3f2e | 1608 | #endif /* CONFIG_FSFREEZE */ |
e3d4d252 | 1609 | |
eab5fd59 PB |
1610 | #if defined(CONFIG_FSTRIM) |
1611 | /* | |
1612 | * Walk list of mounted file systems in the guest, and trim them. | |
1613 | */ | |
e82855d9 JO |
1614 | GuestFilesystemTrimResponse * |
1615 | qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **errp) | |
eab5fd59 | 1616 | { |
e82855d9 | 1617 | GuestFilesystemTrimResponse *response; |
e82855d9 | 1618 | GuestFilesystemTrimResult *result; |
eab5fd59 PB |
1619 | int ret = 0; |
1620 | FsMountList mounts; | |
1621 | struct FsMount *mount; | |
1622 | int fd; | |
73a652a1 | 1623 | struct fstrim_range r; |
eab5fd59 PB |
1624 | |
1625 | slog("guest-fstrim called"); | |
1626 | ||
1627 | QTAILQ_INIT(&mounts); | |
561bfcb6 | 1628 | if (!build_fs_mount_list(&mounts, errp)) { |
e82855d9 | 1629 | return NULL; |
eab5fd59 PB |
1630 | } |
1631 | ||
e82855d9 JO |
1632 | response = g_malloc0(sizeof(*response)); |
1633 | ||
eab5fd59 | 1634 | QTAILQ_FOREACH(mount, &mounts, next) { |
e82855d9 JO |
1635 | result = g_malloc0(sizeof(*result)); |
1636 | result->path = g_strdup(mount->dirname); | |
1637 | ||
54aa3de7 | 1638 | QAPI_LIST_PREPEND(response->paths, result); |
e82855d9 | 1639 | |
b9947c9c | 1640 | fd = qga_open_cloexec(mount->dirname, O_RDONLY, 0); |
eab5fd59 | 1641 | if (fd == -1) { |
e82855d9 JO |
1642 | result->error = g_strdup_printf("failed to open: %s", |
1643 | strerror(errno)); | |
1644 | result->has_error = true; | |
1645 | continue; | |
eab5fd59 PB |
1646 | } |
1647 | ||
e35916ac MT |
1648 | /* We try to cull filesystems we know won't work in advance, but other |
1649 | * filesystems may not implement fstrim for less obvious reasons. | |
1650 | * These will report EOPNOTSUPP; while in some other cases ENOTTY | |
1651 | * will be reported (e.g. CD-ROMs). | |
e82855d9 | 1652 | * Any other error means an unexpected error. |
eab5fd59 | 1653 | */ |
73a652a1 JO |
1654 | r.start = 0; |
1655 | r.len = -1; | |
1656 | r.minlen = has_minimum ? minimum : 0; | |
eab5fd59 PB |
1657 | ret = ioctl(fd, FITRIM, &r); |
1658 | if (ret == -1) { | |
e82855d9 JO |
1659 | result->has_error = true; |
1660 | if (errno == ENOTTY || errno == EOPNOTSUPP) { | |
1661 | result->error = g_strdup("trim not supported"); | |
1662 | } else { | |
1663 | result->error = g_strdup_printf("failed to trim: %s", | |
1664 | strerror(errno)); | |
eab5fd59 | 1665 | } |
e82855d9 JO |
1666 | close(fd); |
1667 | continue; | |
eab5fd59 | 1668 | } |
e82855d9 JO |
1669 | |
1670 | result->has_minimum = true; | |
1671 | result->minimum = r.minlen; | |
1672 | result->has_trimmed = true; | |
1673 | result->trimmed = r.len; | |
eab5fd59 PB |
1674 | close(fd); |
1675 | } | |
1676 | ||
eab5fd59 | 1677 | free_fs_mount_list(&mounts); |
e82855d9 | 1678 | return response; |
eab5fd59 PB |
1679 | } |
1680 | #endif /* CONFIG_FSTRIM */ | |
1681 | ||
1682 | ||
11d0f125 LC |
1683 | #define LINUX_SYS_STATE_FILE "/sys/power/state" |
1684 | #define SUSPEND_SUPPORTED 0 | |
1685 | #define SUSPEND_NOT_SUPPORTED 1 | |
1686 | ||
8b020b5e DHB |
1687 | typedef enum { |
1688 | SUSPEND_MODE_DISK = 0, | |
1689 | SUSPEND_MODE_RAM = 1, | |
1690 | SUSPEND_MODE_HYBRID = 2, | |
1691 | } SuspendMode; | |
1692 | ||
1693 | /* | |
1694 | * Executes a command in a child process using g_spawn_sync, | |
1695 | * returning an int >= 0 representing the exit status of the | |
1696 | * process. | |
1697 | * | |
1698 | * If the program wasn't found in path, returns -1. | |
1699 | * | |
1700 | * If a problem happened when creating the child process, | |
1701 | * returns -1 and errp is set. | |
1702 | */ | |
1703 | static int run_process_child(const char *command[], Error **errp) | |
11d0f125 | 1704 | { |
8b020b5e DHB |
1705 | int exit_status, spawn_flag; |
1706 | GError *g_err = NULL; | |
1707 | bool success; | |
1708 | ||
1709 | spawn_flag = G_SPAWN_SEARCH_PATH | G_SPAWN_STDOUT_TO_DEV_NULL | | |
1710 | G_SPAWN_STDERR_TO_DEV_NULL; | |
11d0f125 | 1711 | |
fcc41961 | 1712 | success = g_spawn_sync(NULL, (char **)command, NULL, spawn_flag, |
8b020b5e DHB |
1713 | NULL, NULL, NULL, NULL, |
1714 | &exit_status, &g_err); | |
304a0fcb | 1715 | |
8b020b5e DHB |
1716 | if (success) { |
1717 | return WEXITSTATUS(exit_status); | |
304a0fcb DHB |
1718 | } |
1719 | ||
8b020b5e DHB |
1720 | if (g_err && (g_err->code != G_SPAWN_ERROR_NOENT)) { |
1721 | error_setg(errp, "failed to create child process, error '%s'", | |
1722 | g_err->message); | |
a5fcf0e3 | 1723 | } |
11d0f125 | 1724 | |
8b020b5e DHB |
1725 | g_error_free(g_err); |
1726 | return -1; | |
1727 | } | |
1728 | ||
067927d6 DHB |
1729 | static bool systemd_supports_mode(SuspendMode mode, Error **errp) |
1730 | { | |
067927d6 DHB |
1731 | const char *systemctl_args[3] = {"systemd-hibernate", "systemd-suspend", |
1732 | "systemd-hybrid-sleep"}; | |
1733 | const char *cmd[4] = {"systemctl", "status", systemctl_args[mode], NULL}; | |
1734 | int status; | |
1735 | ||
992861fb | 1736 | status = run_process_child(cmd, errp); |
067927d6 DHB |
1737 | |
1738 | /* | |
1739 | * systemctl status uses LSB return codes so we can expect | |
1740 | * status > 0 and be ok. To assert if the guest has support | |
1741 | * for the selected suspend mode, status should be < 4. 4 is | |
1742 | * the code for unknown service status, the return value when | |
1743 | * the service does not exist. A common value is status = 3 | |
1744 | * (program is not running). | |
1745 | */ | |
1746 | if (status > 0 && status < 4) { | |
1747 | return true; | |
1748 | } | |
1749 | ||
067927d6 DHB |
1750 | return false; |
1751 | } | |
1752 | ||
1753 | static void systemd_suspend(SuspendMode mode, Error **errp) | |
1754 | { | |
1755 | Error *local_err = NULL; | |
1756 | const char *systemctl_args[3] = {"hibernate", "suspend", "hybrid-sleep"}; | |
1757 | const char *cmd[3] = {"systemctl", systemctl_args[mode], NULL}; | |
1758 | int status; | |
1759 | ||
1760 | status = run_process_child(cmd, &local_err); | |
1761 | ||
1762 | if (status == 0) { | |
1763 | return; | |
1764 | } | |
1765 | ||
1766 | if ((status == -1) && !local_err) { | |
1767 | error_setg(errp, "the helper program 'systemctl %s' was not found", | |
1768 | systemctl_args[mode]); | |
1769 | return; | |
1770 | } | |
1771 | ||
1772 | if (local_err) { | |
1773 | error_propagate(errp, local_err); | |
1774 | } else { | |
1775 | error_setg(errp, "the helper program 'systemctl %s' returned an " | |
1776 | "unexpected exit status code (%d)", | |
1777 | systemctl_args[mode], status); | |
1778 | } | |
1779 | } | |
1780 | ||
8b020b5e DHB |
1781 | static bool pmutils_supports_mode(SuspendMode mode, Error **errp) |
1782 | { | |
1783 | Error *local_err = NULL; | |
1784 | const char *pmutils_args[3] = {"--hibernate", "--suspend", | |
1785 | "--suspend-hybrid"}; | |
1786 | const char *cmd[3] = {"pm-is-supported", pmutils_args[mode], NULL}; | |
1787 | int status; | |
1788 | ||
1789 | status = run_process_child(cmd, &local_err); | |
1790 | ||
1791 | if (status == SUSPEND_SUPPORTED) { | |
1792 | return true; | |
11d0f125 LC |
1793 | } |
1794 | ||
8b020b5e DHB |
1795 | if ((status == -1) && !local_err) { |
1796 | return false; | |
6b26e837 | 1797 | } |
11d0f125 | 1798 | |
8b020b5e DHB |
1799 | if (local_err) { |
1800 | error_propagate(errp, local_err); | |
1801 | } else { | |
77dbc81b | 1802 | error_setg(errp, |
8b020b5e DHB |
1803 | "the helper program '%s' returned an unexpected exit" |
1804 | " status code (%d)", "pm-is-supported", status); | |
11d0f125 LC |
1805 | } |
1806 | ||
8b020b5e | 1807 | return false; |
a5fcf0e3 DHB |
1808 | } |
1809 | ||
8b020b5e | 1810 | static void pmutils_suspend(SuspendMode mode, Error **errp) |
246d76eb DHB |
1811 | { |
1812 | Error *local_err = NULL; | |
8b020b5e DHB |
1813 | const char *pmutils_binaries[3] = {"pm-hibernate", "pm-suspend", |
1814 | "pm-suspend-hybrid"}; | |
1815 | const char *cmd[2] = {pmutils_binaries[mode], NULL}; | |
246d76eb DHB |
1816 | int status; |
1817 | ||
8b020b5e | 1818 | status = run_process_child(cmd, &local_err); |
246d76eb | 1819 | |
8b020b5e | 1820 | if (status == 0) { |
246d76eb DHB |
1821 | return; |
1822 | } | |
1823 | ||
8b020b5e DHB |
1824 | if ((status == -1) && !local_err) { |
1825 | error_setg(errp, "the helper program '%s' was not found", | |
1826 | pmutils_binaries[mode]); | |
1827 | return; | |
246d76eb DHB |
1828 | } |
1829 | ||
246d76eb DHB |
1830 | if (local_err) { |
1831 | error_propagate(errp, local_err); | |
8b020b5e | 1832 | } else { |
246d76eb | 1833 | error_setg(errp, |
8b020b5e DHB |
1834 | "the helper program '%s' returned an unexpected exit" |
1835 | " status code (%d)", pmutils_binaries[mode], status); | |
246d76eb | 1836 | } |
246d76eb DHB |
1837 | } |
1838 | ||
8b020b5e | 1839 | static bool linux_sys_state_supports_mode(SuspendMode mode, Error **errp) |
a5fcf0e3 | 1840 | { |
8b020b5e DHB |
1841 | const char *sysfile_strs[3] = {"disk", "mem", NULL}; |
1842 | const char *sysfile_str = sysfile_strs[mode]; | |
a5fcf0e3 DHB |
1843 | char buf[32]; /* hopefully big enough */ |
1844 | int fd; | |
1845 | ssize_t ret; | |
1846 | ||
8b020b5e DHB |
1847 | if (!sysfile_str) { |
1848 | error_setg(errp, "unknown guest suspend mode"); | |
a5fcf0e3 DHB |
1849 | return false; |
1850 | } | |
1851 | ||
1852 | fd = open(LINUX_SYS_STATE_FILE, O_RDONLY); | |
1853 | if (fd < 0) { | |
1854 | return false; | |
1855 | } | |
1856 | ||
1857 | ret = read(fd, buf, sizeof(buf) - 1); | |
d9c745c1 | 1858 | close(fd); |
a5fcf0e3 DHB |
1859 | if (ret <= 0) { |
1860 | return false; | |
1861 | } | |
1862 | buf[ret] = '\0'; | |
1863 | ||
1864 | if (strstr(buf, sysfile_str)) { | |
1865 | return true; | |
1866 | } | |
1867 | return false; | |
1868 | } | |
1869 | ||
8b020b5e | 1870 | static void linux_sys_state_suspend(SuspendMode mode, Error **errp) |
11d0f125 | 1871 | { |
7b376087 | 1872 | Error *local_err = NULL; |
8b020b5e DHB |
1873 | const char *sysfile_strs[3] = {"disk", "mem", NULL}; |
1874 | const char *sysfile_str = sysfile_strs[mode]; | |
7b376087 | 1875 | pid_t pid; |
dc8764f0 | 1876 | int status; |
11d0f125 | 1877 | |
8b020b5e | 1878 | if (!sysfile_str) { |
304a0fcb DHB |
1879 | error_setg(errp, "unknown guest suspend mode"); |
1880 | return; | |
1881 | } | |
1882 | ||
11d0f125 | 1883 | pid = fork(); |
246d76eb | 1884 | if (!pid) { |
11d0f125 LC |
1885 | /* child */ |
1886 | int fd; | |
1887 | ||
1888 | setsid(); | |
1889 | reopen_fd_to_null(0); | |
1890 | reopen_fd_to_null(1); | |
1891 | reopen_fd_to_null(2); | |
1892 | ||
11d0f125 LC |
1893 | fd = open(LINUX_SYS_STATE_FILE, O_WRONLY); |
1894 | if (fd < 0) { | |
1895 | _exit(EXIT_FAILURE); | |
1896 | } | |
1897 | ||
1898 | if (write(fd, sysfile_str, strlen(sysfile_str)) < 0) { | |
1899 | _exit(EXIT_FAILURE); | |
1900 | } | |
1901 | ||
1902 | _exit(EXIT_SUCCESS); | |
7b376087 | 1903 | } else if (pid < 0) { |
77dbc81b | 1904 | error_setg_errno(errp, errno, "failed to create child process"); |
246d76eb | 1905 | return; |
11d0f125 LC |
1906 | } |
1907 | ||
7b376087 | 1908 | ga_wait_child(pid, &status, &local_err); |
84d18f06 | 1909 | if (local_err) { |
77dbc81b | 1910 | error_propagate(errp, local_err); |
246d76eb | 1911 | return; |
dc8764f0 LC |
1912 | } |
1913 | ||
7b376087 | 1914 | if (WEXITSTATUS(status)) { |
77dbc81b | 1915 | error_setg(errp, "child process has failed to suspend"); |
11d0f125 | 1916 | } |
dc8764f0 | 1917 | |
246d76eb DHB |
1918 | } |
1919 | ||
8b020b5e | 1920 | static void guest_suspend(SuspendMode mode, Error **errp) |
246d76eb DHB |
1921 | { |
1922 | Error *local_err = NULL; | |
73e1d8eb | 1923 | bool mode_supported = false; |
246d76eb | 1924 | |
73e1d8eb DHB |
1925 | if (systemd_supports_mode(mode, &local_err)) { |
1926 | mode_supported = true; | |
1927 | systemd_suspend(mode, &local_err); | |
246d76eb DHB |
1928 | } |
1929 | ||
067927d6 DHB |
1930 | if (!local_err) { |
1931 | return; | |
1932 | } | |
1933 | ||
1934 | error_free(local_err); | |
6a4a3853 | 1935 | local_err = NULL; |
067927d6 | 1936 | |
73e1d8eb DHB |
1937 | if (pmutils_supports_mode(mode, &local_err)) { |
1938 | mode_supported = true; | |
1939 | pmutils_suspend(mode, &local_err); | |
1940 | } | |
1941 | ||
246d76eb DHB |
1942 | if (!local_err) { |
1943 | return; | |
1944 | } | |
1945 | ||
1946 | error_free(local_err); | |
6a4a3853 | 1947 | local_err = NULL; |
246d76eb | 1948 | |
73e1d8eb DHB |
1949 | if (linux_sys_state_supports_mode(mode, &local_err)) { |
1950 | mode_supported = true; | |
1951 | linux_sys_state_suspend(mode, &local_err); | |
1952 | } | |
1953 | ||
1954 | if (!mode_supported) { | |
6a4a3853 | 1955 | error_free(local_err); |
73e1d8eb DHB |
1956 | error_setg(errp, |
1957 | "the requested suspend mode is not supported by the guest"); | |
b2322003 | 1958 | } else { |
246d76eb DHB |
1959 | error_propagate(errp, local_err); |
1960 | } | |
11d0f125 LC |
1961 | } |
1962 | ||
77dbc81b | 1963 | void qmp_guest_suspend_disk(Error **errp) |
11d0f125 | 1964 | { |
304a0fcb | 1965 | guest_suspend(SUSPEND_MODE_DISK, errp); |
11d0f125 LC |
1966 | } |
1967 | ||
77dbc81b | 1968 | void qmp_guest_suspend_ram(Error **errp) |
fbf42210 | 1969 | { |
304a0fcb | 1970 | guest_suspend(SUSPEND_MODE_RAM, errp); |
fbf42210 LC |
1971 | } |
1972 | ||
77dbc81b | 1973 | void qmp_guest_suspend_hybrid(Error **errp) |
95f4f404 | 1974 | { |
304a0fcb | 1975 | guest_suspend(SUSPEND_MODE_HYBRID, errp); |
95f4f404 LC |
1976 | } |
1977 | ||
d2baff62 LE |
1978 | /* Transfer online/offline status between @vcpu and the guest system. |
1979 | * | |
1980 | * On input either @errp or *@errp must be NULL. | |
1981 | * | |
1982 | * In system-to-@vcpu direction, the following @vcpu fields are accessed: | |
1983 | * - R: vcpu->logical_id | |
1984 | * - W: vcpu->online | |
1985 | * - W: vcpu->can_offline | |
1986 | * | |
1987 | * In @vcpu-to-system direction, the following @vcpu fields are accessed: | |
1988 | * - R: vcpu->logical_id | |
1989 | * - R: vcpu->online | |
1990 | * | |
1991 | * Written members remain unmodified on error. | |
1992 | */ | |
1993 | static void transfer_vcpu(GuestLogicalProcessor *vcpu, bool sys2vcpu, | |
b4bf912a | 1994 | char *dirpath, Error **errp) |
d2baff62 | 1995 | { |
b4bf912a IM |
1996 | int fd; |
1997 | int res; | |
d2baff62 | 1998 | int dirfd; |
b4bf912a | 1999 | static const char fn[] = "online"; |
d2baff62 | 2000 | |
d2baff62 LE |
2001 | dirfd = open(dirpath, O_RDONLY | O_DIRECTORY); |
2002 | if (dirfd == -1) { | |
2003 | error_setg_errno(errp, errno, "open(\"%s\")", dirpath); | |
b4bf912a IM |
2004 | return; |
2005 | } | |
d2baff62 | 2006 | |
b4bf912a IM |
2007 | fd = openat(dirfd, fn, sys2vcpu ? O_RDONLY : O_RDWR); |
2008 | if (fd == -1) { | |
2009 | if (errno != ENOENT) { | |
2010 | error_setg_errno(errp, errno, "open(\"%s/%s\")", dirpath, fn); | |
2011 | } else if (sys2vcpu) { | |
2012 | vcpu->online = true; | |
2013 | vcpu->can_offline = false; | |
2014 | } else if (!vcpu->online) { | |
2015 | error_setg(errp, "logical processor #%" PRId64 " can't be " | |
2016 | "offlined", vcpu->logical_id); | |
2017 | } /* otherwise pretend successful re-onlining */ | |
2018 | } else { | |
2019 | unsigned char status; | |
2020 | ||
2021 | res = pread(fd, &status, 1, 0); | |
2022 | if (res == -1) { | |
2023 | error_setg_errno(errp, errno, "pread(\"%s/%s\")", dirpath, fn); | |
2024 | } else if (res == 0) { | |
2025 | error_setg(errp, "pread(\"%s/%s\"): unexpected EOF", dirpath, | |
2026 | fn); | |
2027 | } else if (sys2vcpu) { | |
2028 | vcpu->online = (status != '0'); | |
2029 | vcpu->can_offline = true; | |
2030 | } else if (vcpu->online != (status != '0')) { | |
2031 | status = '0' + vcpu->online; | |
2032 | if (pwrite(fd, &status, 1, 0) == -1) { | |
2033 | error_setg_errno(errp, errno, "pwrite(\"%s/%s\")", dirpath, | |
2034 | fn); | |
2035 | } | |
2036 | } /* otherwise pretend successful re-(on|off)-lining */ | |
d2baff62 | 2037 | |
b4bf912a | 2038 | res = close(fd); |
d2baff62 LE |
2039 | g_assert(res == 0); |
2040 | } | |
2041 | ||
b4bf912a IM |
2042 | res = close(dirfd); |
2043 | g_assert(res == 0); | |
d2baff62 LE |
2044 | } |
2045 | ||
2046 | GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp) | |
2047 | { | |
c3033fd3 | 2048 | GuestLogicalProcessorList *head, **tail; |
27e7de3c LM |
2049 | const char *cpu_dir = "/sys/devices/system/cpu"; |
2050 | const gchar *line; | |
2051 | g_autoptr(GDir) cpu_gdir = NULL; | |
d2baff62 LE |
2052 | Error *local_err = NULL; |
2053 | ||
d2baff62 | 2054 | head = NULL; |
c3033fd3 | 2055 | tail = &head; |
27e7de3c | 2056 | cpu_gdir = g_dir_open(cpu_dir, 0, NULL); |
d2baff62 | 2057 | |
27e7de3c LM |
2058 | if (cpu_gdir == NULL) { |
2059 | error_setg_errno(errp, errno, "failed to list entries: %s", cpu_dir); | |
2060 | return NULL; | |
2061 | } | |
b4bf912a | 2062 | |
27e7de3c LM |
2063 | while (local_err == NULL && (line = g_dir_read_name(cpu_gdir)) != NULL) { |
2064 | GuestLogicalProcessor *vcpu; | |
2065 | int64_t id; | |
2066 | if (sscanf(line, "cpu%" PRId64, &id)) { | |
2067 | g_autofree char *path = g_strdup_printf("/sys/devices/system/cpu/" | |
2068 | "cpu%" PRId64 "/", id); | |
b4bf912a IM |
2069 | vcpu = g_malloc0(sizeof *vcpu); |
2070 | vcpu->logical_id = id; | |
2071 | vcpu->has_can_offline = true; /* lolspeak ftw */ | |
2072 | transfer_vcpu(vcpu, true, path, &local_err); | |
c3033fd3 | 2073 | QAPI_LIST_APPEND(tail, vcpu); |
b4bf912a | 2074 | } |
d2baff62 LE |
2075 | } |
2076 | ||
2077 | if (local_err == NULL) { | |
2078 | /* there's no guest with zero VCPUs */ | |
2079 | g_assert(head != NULL); | |
2080 | return head; | |
2081 | } | |
2082 | ||
2083 | qapi_free_GuestLogicalProcessorList(head); | |
2084 | error_propagate(errp, local_err); | |
2085 | return NULL; | |
2086 | } | |
2087 | ||
cbb65fc2 LE |
2088 | int64_t qmp_guest_set_vcpus(GuestLogicalProcessorList *vcpus, Error **errp) |
2089 | { | |
2090 | int64_t processed; | |
2091 | Error *local_err = NULL; | |
2092 | ||
2093 | processed = 0; | |
2094 | while (vcpus != NULL) { | |
b4bf912a IM |
2095 | char *path = g_strdup_printf("/sys/devices/system/cpu/cpu%" PRId64 "/", |
2096 | vcpus->value->logical_id); | |
2097 | ||
2098 | transfer_vcpu(vcpus->value, false, path, &local_err); | |
2099 | g_free(path); | |
cbb65fc2 LE |
2100 | if (local_err != NULL) { |
2101 | break; | |
2102 | } | |
2103 | ++processed; | |
2104 | vcpus = vcpus->next; | |
2105 | } | |
2106 | ||
2107 | if (local_err != NULL) { | |
2108 | if (processed == 0) { | |
2109 | error_propagate(errp, local_err); | |
2110 | } else { | |
2111 | error_free(local_err); | |
2112 | } | |
2113 | } | |
2114 | ||
2115 | return processed; | |
2116 | } | |
4fd0642e | 2117 | #endif /* __linux__ */ |
cbb65fc2 | 2118 | |
4fd0642e | 2119 | #if defined(__linux__) || defined(__FreeBSD__) |
215a2771 DB |
2120 | void qmp_guest_set_user_password(const char *username, |
2121 | const char *password, | |
2122 | bool crypted, | |
2123 | Error **errp) | |
2124 | { | |
2125 | Error *local_err = NULL; | |
2126 | char *passwd_path = NULL; | |
2127 | pid_t pid; | |
2128 | int status; | |
2129 | int datafd[2] = { -1, -1 }; | |
2130 | char *rawpasswddata = NULL; | |
2131 | size_t rawpasswdlen; | |
2132 | char *chpasswddata = NULL; | |
2133 | size_t chpasswdlen; | |
2134 | ||
920639ca DB |
2135 | rawpasswddata = (char *)qbase64_decode(password, -1, &rawpasswdlen, errp); |
2136 | if (!rawpasswddata) { | |
2137 | return; | |
2138 | } | |
215a2771 DB |
2139 | rawpasswddata = g_renew(char, rawpasswddata, rawpasswdlen + 1); |
2140 | rawpasswddata[rawpasswdlen] = '\0'; | |
2141 | ||
2142 | if (strchr(rawpasswddata, '\n')) { | |
2143 | error_setg(errp, "forbidden characters in raw password"); | |
2144 | goto out; | |
2145 | } | |
2146 | ||
2147 | if (strchr(username, '\n') || | |
2148 | strchr(username, ':')) { | |
2149 | error_setg(errp, "forbidden characters in username"); | |
2150 | goto out; | |
2151 | } | |
2152 | ||
4fd0642e AI |
2153 | #ifdef __FreeBSD__ |
2154 | chpasswddata = g_strdup(rawpasswddata); | |
2155 | passwd_path = g_find_program_in_path("pw"); | |
2156 | #else | |
215a2771 | 2157 | chpasswddata = g_strdup_printf("%s:%s\n", username, rawpasswddata); |
215a2771 | 2158 | passwd_path = g_find_program_in_path("chpasswd"); |
4fd0642e AI |
2159 | #endif |
2160 | ||
2161 | chpasswdlen = strlen(chpasswddata); | |
215a2771 DB |
2162 | |
2163 | if (!passwd_path) { | |
2164 | error_setg(errp, "cannot find 'passwd' program in PATH"); | |
2165 | goto out; | |
2166 | } | |
2167 | ||
ed78331d | 2168 | if (!g_unix_open_pipe(datafd, FD_CLOEXEC, NULL)) { |
215a2771 DB |
2169 | error_setg(errp, "cannot create pipe FDs"); |
2170 | goto out; | |
2171 | } | |
2172 | ||
2173 | pid = fork(); | |
2174 | if (pid == 0) { | |
2175 | close(datafd[1]); | |
2176 | /* child */ | |
2177 | setsid(); | |
2178 | dup2(datafd[0], 0); | |
2179 | reopen_fd_to_null(1); | |
2180 | reopen_fd_to_null(2); | |
2181 | ||
4fd0642e AI |
2182 | #ifdef __FreeBSD__ |
2183 | const char *h_arg; | |
2184 | h_arg = (crypted) ? "-H" : "-h"; | |
2185 | execl(passwd_path, "pw", "usermod", "-n", username, h_arg, "0", NULL); | |
2186 | #else | |
215a2771 | 2187 | if (crypted) { |
fcc41961 | 2188 | execl(passwd_path, "chpasswd", "-e", NULL); |
215a2771 | 2189 | } else { |
fcc41961 | 2190 | execl(passwd_path, "chpasswd", NULL); |
215a2771 | 2191 | } |
4fd0642e | 2192 | #endif |
215a2771 DB |
2193 | _exit(EXIT_FAILURE); |
2194 | } else if (pid < 0) { | |
2195 | error_setg_errno(errp, errno, "failed to create child process"); | |
2196 | goto out; | |
2197 | } | |
2198 | close(datafd[0]); | |
2199 | datafd[0] = -1; | |
2200 | ||
2201 | if (qemu_write_full(datafd[1], chpasswddata, chpasswdlen) != chpasswdlen) { | |
2202 | error_setg_errno(errp, errno, "cannot write new account password"); | |
2203 | goto out; | |
2204 | } | |
2205 | close(datafd[1]); | |
2206 | datafd[1] = -1; | |
2207 | ||
2208 | ga_wait_child(pid, &status, &local_err); | |
2209 | if (local_err) { | |
2210 | error_propagate(errp, local_err); | |
2211 | goto out; | |
2212 | } | |
2213 | ||
2214 | if (!WIFEXITED(status)) { | |
2215 | error_setg(errp, "child process has terminated abnormally"); | |
2216 | goto out; | |
2217 | } | |
2218 | ||
2219 | if (WEXITSTATUS(status)) { | |
2220 | error_setg(errp, "child process has failed to set user password"); | |
2221 | goto out; | |
2222 | } | |
2223 | ||
2224 | out: | |
2225 | g_free(chpasswddata); | |
2226 | g_free(rawpasswddata); | |
2227 | g_free(passwd_path); | |
2228 | if (datafd[0] != -1) { | |
2229 | close(datafd[0]); | |
2230 | } | |
2231 | if (datafd[1] != -1) { | |
2232 | close(datafd[1]); | |
2233 | } | |
2234 | } | |
4fd0642e AI |
2235 | #else /* __linux__ || __FreeBSD__ */ |
2236 | void qmp_guest_set_user_password(const char *username, | |
2237 | const char *password, | |
2238 | bool crypted, | |
2239 | Error **errp) | |
2240 | { | |
2241 | error_setg(errp, QERR_UNSUPPORTED); | |
2242 | } | |
2243 | #endif /* __linux__ || __FreeBSD__ */ | |
215a2771 | 2244 | |
4fd0642e | 2245 | #ifdef __linux__ |
bd240fca HZ |
2246 | static void ga_read_sysfs_file(int dirfd, const char *pathname, char *buf, |
2247 | int size, Error **errp) | |
2248 | { | |
2249 | int fd; | |
2250 | int res; | |
2251 | ||
2252 | errno = 0; | |
2253 | fd = openat(dirfd, pathname, O_RDONLY); | |
2254 | if (fd == -1) { | |
2255 | error_setg_errno(errp, errno, "open sysfs file \"%s\"", pathname); | |
2256 | return; | |
2257 | } | |
2258 | ||
2259 | res = pread(fd, buf, size, 0); | |
2260 | if (res == -1) { | |
2261 | error_setg_errno(errp, errno, "pread sysfs file \"%s\"", pathname); | |
2262 | } else if (res == 0) { | |
2263 | error_setg(errp, "pread sysfs file \"%s\": unexpected EOF", pathname); | |
2264 | } | |
2265 | close(fd); | |
2266 | } | |
2267 | ||
2268 | static void ga_write_sysfs_file(int dirfd, const char *pathname, | |
2269 | const char *buf, int size, Error **errp) | |
2270 | { | |
2271 | int fd; | |
2272 | ||
2273 | errno = 0; | |
2274 | fd = openat(dirfd, pathname, O_WRONLY); | |
2275 | if (fd == -1) { | |
2276 | error_setg_errno(errp, errno, "open sysfs file \"%s\"", pathname); | |
2277 | return; | |
2278 | } | |
2279 | ||
2280 | if (pwrite(fd, buf, size, 0) == -1) { | |
2281 | error_setg_errno(errp, errno, "pwrite sysfs file \"%s\"", pathname); | |
2282 | } | |
2283 | ||
2284 | close(fd); | |
2285 | } | |
2286 | ||
2287 | /* Transfer online/offline status between @mem_blk and the guest system. | |
2288 | * | |
2289 | * On input either @errp or *@errp must be NULL. | |
2290 | * | |
2291 | * In system-to-@mem_blk direction, the following @mem_blk fields are accessed: | |
2292 | * - R: mem_blk->phys_index | |
2293 | * - W: mem_blk->online | |
2294 | * - W: mem_blk->can_offline | |
2295 | * | |
2296 | * In @mem_blk-to-system direction, the following @mem_blk fields are accessed: | |
2297 | * - R: mem_blk->phys_index | |
2298 | * - R: mem_blk->online | |
2299 | *- R: mem_blk->can_offline | |
2300 | * Written members remain unmodified on error. | |
2301 | */ | |
2302 | static void transfer_memory_block(GuestMemoryBlock *mem_blk, bool sys2memblk, | |
2303 | GuestMemoryBlockResponse *result, | |
2304 | Error **errp) | |
2305 | { | |
2306 | char *dirpath; | |
2307 | int dirfd; | |
2308 | char *status; | |
2309 | Error *local_err = NULL; | |
2310 | ||
2311 | if (!sys2memblk) { | |
2312 | DIR *dp; | |
2313 | ||
2314 | if (!result) { | |
2315 | error_setg(errp, "Internal error, 'result' should not be NULL"); | |
2316 | return; | |
2317 | } | |
2318 | errno = 0; | |
2319 | dp = opendir("/sys/devices/system/memory/"); | |
2320 | /* if there is no 'memory' directory in sysfs, | |
2321 | * we think this VM does not support online/offline memory block, | |
2322 | * any other solution? | |
2323 | */ | |
9879f5ac PMD |
2324 | if (!dp) { |
2325 | if (errno == ENOENT) { | |
2326 | result->response = | |
2327 | GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_NOT_SUPPORTED; | |
2328 | } | |
bd240fca HZ |
2329 | goto out1; |
2330 | } | |
2331 | closedir(dp); | |
2332 | } | |
2333 | ||
2334 | dirpath = g_strdup_printf("/sys/devices/system/memory/memory%" PRId64 "/", | |
2335 | mem_blk->phys_index); | |
2336 | dirfd = open(dirpath, O_RDONLY | O_DIRECTORY); | |
2337 | if (dirfd == -1) { | |
2338 | if (sys2memblk) { | |
2339 | error_setg_errno(errp, errno, "open(\"%s\")", dirpath); | |
2340 | } else { | |
2341 | if (errno == ENOENT) { | |
2342 | result->response = GUEST_MEMORY_BLOCK_RESPONSE_TYPE_NOT_FOUND; | |
2343 | } else { | |
2344 | result->response = | |
2345 | GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_FAILED; | |
2346 | } | |
2347 | } | |
2348 | g_free(dirpath); | |
2349 | goto out1; | |
2350 | } | |
2351 | g_free(dirpath); | |
2352 | ||
2353 | status = g_malloc0(10); | |
2354 | ga_read_sysfs_file(dirfd, "state", status, 10, &local_err); | |
2355 | if (local_err) { | |
2356 | /* treat with sysfs file that not exist in old kernel */ | |
2357 | if (errno == ENOENT) { | |
2358 | error_free(local_err); | |
2359 | if (sys2memblk) { | |
2360 | mem_blk->online = true; | |
2361 | mem_blk->can_offline = false; | |
2362 | } else if (!mem_blk->online) { | |
2363 | result->response = | |
2364 | GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_NOT_SUPPORTED; | |
2365 | } | |
2366 | } else { | |
2367 | if (sys2memblk) { | |
2368 | error_propagate(errp, local_err); | |
2369 | } else { | |
b368123d | 2370 | error_free(local_err); |
bd240fca HZ |
2371 | result->response = |
2372 | GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_FAILED; | |
2373 | } | |
2374 | } | |
2375 | goto out2; | |
2376 | } | |
2377 | ||
2378 | if (sys2memblk) { | |
2379 | char removable = '0'; | |
2380 | ||
2381 | mem_blk->online = (strncmp(status, "online", 6) == 0); | |
2382 | ||
2383 | ga_read_sysfs_file(dirfd, "removable", &removable, 1, &local_err); | |
2384 | if (local_err) { | |
67cc32eb | 2385 | /* if no 'removable' file, it doesn't support offline mem blk */ |
bd240fca HZ |
2386 | if (errno == ENOENT) { |
2387 | error_free(local_err); | |
2388 | mem_blk->can_offline = false; | |
2389 | } else { | |
2390 | error_propagate(errp, local_err); | |
2391 | } | |
2392 | } else { | |
2393 | mem_blk->can_offline = (removable != '0'); | |
2394 | } | |
2395 | } else { | |
2396 | if (mem_blk->online != (strncmp(status, "online", 6) == 0)) { | |
7064024d | 2397 | const char *new_state = mem_blk->online ? "online" : "offline"; |
bd240fca HZ |
2398 | |
2399 | ga_write_sysfs_file(dirfd, "state", new_state, strlen(new_state), | |
2400 | &local_err); | |
bd240fca HZ |
2401 | if (local_err) { |
2402 | error_free(local_err); | |
2403 | result->response = | |
2404 | GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_FAILED; | |
2405 | goto out2; | |
2406 | } | |
2407 | ||
2408 | result->response = GUEST_MEMORY_BLOCK_RESPONSE_TYPE_SUCCESS; | |
2409 | result->has_error_code = false; | |
2410 | } /* otherwise pretend successful re-(on|off)-lining */ | |
2411 | } | |
2412 | g_free(status); | |
2413 | close(dirfd); | |
2414 | return; | |
2415 | ||
2416 | out2: | |
2417 | g_free(status); | |
2418 | close(dirfd); | |
2419 | out1: | |
2420 | if (!sys2memblk) { | |
2421 | result->has_error_code = true; | |
2422 | result->error_code = errno; | |
2423 | } | |
2424 | } | |
2425 | ||
a065aaa9 HZ |
2426 | GuestMemoryBlockList *qmp_guest_get_memory_blocks(Error **errp) |
2427 | { | |
c3033fd3 | 2428 | GuestMemoryBlockList *head, **tail; |
bd240fca HZ |
2429 | Error *local_err = NULL; |
2430 | struct dirent *de; | |
2431 | DIR *dp; | |
2432 | ||
2433 | head = NULL; | |
c3033fd3 | 2434 | tail = &head; |
bd240fca HZ |
2435 | |
2436 | dp = opendir("/sys/devices/system/memory/"); | |
2437 | if (!dp) { | |
f693fe6e MR |
2438 | /* it's ok if this happens to be a system that doesn't expose |
2439 | * memory blocks via sysfs, but otherwise we should report | |
2440 | * an error | |
2441 | */ | |
2442 | if (errno != ENOENT) { | |
2443 | error_setg_errno(errp, errno, "Can't open directory" | |
9af9e0fe | 2444 | "\"/sys/devices/system/memory/\""); |
f693fe6e | 2445 | } |
bd240fca HZ |
2446 | return NULL; |
2447 | } | |
2448 | ||
2449 | /* Note: the phys_index of memory block may be discontinuous, | |
2450 | * this is because a memblk is the unit of the Sparse Memory design, which | |
2451 | * allows discontinuous memory ranges (ex. NUMA), so here we should | |
2452 | * traverse the memory block directory. | |
2453 | */ | |
2454 | while ((de = readdir(dp)) != NULL) { | |
2455 | GuestMemoryBlock *mem_blk; | |
bd240fca HZ |
2456 | |
2457 | if ((strncmp(de->d_name, "memory", 6) != 0) || | |
2458 | !(de->d_type & DT_DIR)) { | |
2459 | continue; | |
2460 | } | |
2461 | ||
2462 | mem_blk = g_malloc0(sizeof *mem_blk); | |
2463 | /* The d_name is "memoryXXX", phys_index is block id, same as XXX */ | |
2464 | mem_blk->phys_index = strtoul(&de->d_name[6], NULL, 10); | |
2465 | mem_blk->has_can_offline = true; /* lolspeak ftw */ | |
2466 | transfer_memory_block(mem_blk, true, NULL, &local_err); | |
4155c998 MA |
2467 | if (local_err) { |
2468 | break; | |
2469 | } | |
bd240fca | 2470 | |
c3033fd3 | 2471 | QAPI_LIST_APPEND(tail, mem_blk); |
bd240fca HZ |
2472 | } |
2473 | ||
2474 | closedir(dp); | |
2475 | if (local_err == NULL) { | |
2476 | /* there's no guest with zero memory blocks */ | |
2477 | if (head == NULL) { | |
2478 | error_setg(errp, "guest reported zero memory blocks!"); | |
2479 | } | |
2480 | return head; | |
2481 | } | |
2482 | ||
2483 | qapi_free_GuestMemoryBlockList(head); | |
2484 | error_propagate(errp, local_err); | |
a065aaa9 HZ |
2485 | return NULL; |
2486 | } | |
2487 | ||
2488 | GuestMemoryBlockResponseList * | |
2489 | qmp_guest_set_memory_blocks(GuestMemoryBlockList *mem_blks, Error **errp) | |
2490 | { | |
c3033fd3 | 2491 | GuestMemoryBlockResponseList *head, **tail; |
32ca7927 HZ |
2492 | Error *local_err = NULL; |
2493 | ||
2494 | head = NULL; | |
c3033fd3 | 2495 | tail = &head; |
32ca7927 HZ |
2496 | |
2497 | while (mem_blks != NULL) { | |
2498 | GuestMemoryBlockResponse *result; | |
32ca7927 HZ |
2499 | GuestMemoryBlock *current_mem_blk = mem_blks->value; |
2500 | ||
2501 | result = g_malloc0(sizeof(*result)); | |
2502 | result->phys_index = current_mem_blk->phys_index; | |
2503 | transfer_memory_block(current_mem_blk, false, result, &local_err); | |
2504 | if (local_err) { /* should never happen */ | |
2505 | goto err; | |
2506 | } | |
32ca7927 | 2507 | |
c3033fd3 | 2508 | QAPI_LIST_APPEND(tail, result); |
32ca7927 HZ |
2509 | mem_blks = mem_blks->next; |
2510 | } | |
2511 | ||
2512 | return head; | |
2513 | err: | |
2514 | qapi_free_GuestMemoryBlockResponseList(head); | |
2515 | error_propagate(errp, local_err); | |
a065aaa9 HZ |
2516 | return NULL; |
2517 | } | |
2518 | ||
2519 | GuestMemoryBlockInfo *qmp_guest_get_memory_block_info(Error **errp) | |
2520 | { | |
ef82b60b HZ |
2521 | Error *local_err = NULL; |
2522 | char *dirpath; | |
2523 | int dirfd; | |
2524 | char *buf; | |
2525 | GuestMemoryBlockInfo *info; | |
2526 | ||
2527 | dirpath = g_strdup_printf("/sys/devices/system/memory/"); | |
2528 | dirfd = open(dirpath, O_RDONLY | O_DIRECTORY); | |
2529 | if (dirfd == -1) { | |
2530 | error_setg_errno(errp, errno, "open(\"%s\")", dirpath); | |
2531 | g_free(dirpath); | |
2532 | return NULL; | |
2533 | } | |
2534 | g_free(dirpath); | |
2535 | ||
2536 | buf = g_malloc0(20); | |
2537 | ga_read_sysfs_file(dirfd, "block_size_bytes", buf, 20, &local_err); | |
8ce1ee46 | 2538 | close(dirfd); |
ef82b60b HZ |
2539 | if (local_err) { |
2540 | g_free(buf); | |
2541 | error_propagate(errp, local_err); | |
2542 | return NULL; | |
2543 | } | |
2544 | ||
2545 | info = g_new0(GuestMemoryBlockInfo, 1); | |
2546 | info->size = strtol(buf, NULL, 16); /* the unit is bytes */ | |
2547 | ||
2548 | g_free(buf); | |
2549 | ||
2550 | return info; | |
a065aaa9 HZ |
2551 | } |
2552 | ||
3569664e | 2553 | #define MAX_NAME_LEN 128 |
2554 | static GuestDiskStatsInfoList *guest_get_diskstats(Error **errp) | |
2555 | { | |
2556 | #ifdef CONFIG_LINUX | |
2557 | GuestDiskStatsInfoList *head = NULL, **tail = &head; | |
2558 | const char *diskstats = "/proc/diskstats"; | |
2559 | FILE *fp; | |
2560 | size_t n; | |
2561 | char *line = NULL; | |
2562 | ||
2563 | fp = fopen(diskstats, "r"); | |
2564 | if (fp == NULL) { | |
2565 | error_setg_errno(errp, errno, "open(\"%s\")", diskstats); | |
2566 | return NULL; | |
2567 | } | |
2568 | ||
2569 | while (getline(&line, &n, fp) != -1) { | |
2570 | g_autofree GuestDiskStatsInfo *diskstatinfo = NULL; | |
2571 | g_autofree GuestDiskStats *diskstat = NULL; | |
2572 | char dev_name[MAX_NAME_LEN]; | |
2573 | unsigned int ios_pgr, tot_ticks, rq_ticks, wr_ticks, dc_ticks, fl_ticks; | |
2574 | unsigned long rd_ios, rd_merges_or_rd_sec, rd_ticks_or_wr_sec, wr_ios; | |
2575 | unsigned long wr_merges, rd_sec_or_wr_ios, wr_sec; | |
2576 | unsigned long dc_ios, dc_merges, dc_sec, fl_ios; | |
2577 | unsigned int major, minor; | |
2578 | int i; | |
2579 | ||
2580 | i = sscanf(line, "%u %u %s %lu %lu %lu" | |
2581 | "%lu %lu %lu %lu %u %u %u %u" | |
2582 | "%lu %lu %lu %u %lu %u", | |
2583 | &major, &minor, dev_name, | |
2584 | &rd_ios, &rd_merges_or_rd_sec, &rd_sec_or_wr_ios, | |
2585 | &rd_ticks_or_wr_sec, &wr_ios, &wr_merges, &wr_sec, | |
2586 | &wr_ticks, &ios_pgr, &tot_ticks, &rq_ticks, | |
2587 | &dc_ios, &dc_merges, &dc_sec, &dc_ticks, | |
2588 | &fl_ios, &fl_ticks); | |
2589 | ||
2590 | if (i < 7) { | |
2591 | continue; | |
2592 | } | |
2593 | ||
2594 | diskstatinfo = g_new0(GuestDiskStatsInfo, 1); | |
2595 | diskstatinfo->name = g_strdup(dev_name); | |
2596 | diskstatinfo->major = major; | |
2597 | diskstatinfo->minor = minor; | |
2598 | ||
2599 | diskstat = g_new0(GuestDiskStats, 1); | |
2600 | if (i == 7) { | |
2601 | diskstat->has_read_ios = true; | |
2602 | diskstat->read_ios = rd_ios; | |
2603 | diskstat->has_read_sectors = true; | |
2604 | diskstat->read_sectors = rd_merges_or_rd_sec; | |
2605 | diskstat->has_write_ios = true; | |
2606 | diskstat->write_ios = rd_sec_or_wr_ios; | |
2607 | diskstat->has_write_sectors = true; | |
2608 | diskstat->write_sectors = rd_ticks_or_wr_sec; | |
2609 | } | |
2610 | if (i >= 14) { | |
2611 | diskstat->has_read_ios = true; | |
2612 | diskstat->read_ios = rd_ios; | |
2613 | diskstat->has_read_sectors = true; | |
2614 | diskstat->read_sectors = rd_sec_or_wr_ios; | |
2615 | diskstat->has_read_merges = true; | |
2616 | diskstat->read_merges = rd_merges_or_rd_sec; | |
2617 | diskstat->has_read_ticks = true; | |
2618 | diskstat->read_ticks = rd_ticks_or_wr_sec; | |
2619 | diskstat->has_write_ios = true; | |
2620 | diskstat->write_ios = wr_ios; | |
2621 | diskstat->has_write_sectors = true; | |
2622 | diskstat->write_sectors = wr_sec; | |
2623 | diskstat->has_write_merges = true; | |
2624 | diskstat->write_merges = wr_merges; | |
2625 | diskstat->has_write_ticks = true; | |
2626 | diskstat->write_ticks = wr_ticks; | |
2627 | diskstat->has_ios_pgr = true; | |
2628 | diskstat->ios_pgr = ios_pgr; | |
2629 | diskstat->has_total_ticks = true; | |
2630 | diskstat->total_ticks = tot_ticks; | |
2631 | diskstat->has_weight_ticks = true; | |
2632 | diskstat->weight_ticks = rq_ticks; | |
2633 | } | |
2634 | if (i >= 18) { | |
2635 | diskstat->has_discard_ios = true; | |
2636 | diskstat->discard_ios = dc_ios; | |
2637 | diskstat->has_discard_merges = true; | |
2638 | diskstat->discard_merges = dc_merges; | |
2639 | diskstat->has_discard_sectors = true; | |
2640 | diskstat->discard_sectors = dc_sec; | |
2641 | diskstat->has_discard_ticks = true; | |
2642 | diskstat->discard_ticks = dc_ticks; | |
2643 | } | |
2644 | if (i >= 20) { | |
2645 | diskstat->has_flush_ios = true; | |
2646 | diskstat->flush_ios = fl_ios; | |
2647 | diskstat->has_flush_ticks = true; | |
2648 | diskstat->flush_ticks = fl_ticks; | |
2649 | } | |
2650 | ||
2651 | diskstatinfo->stats = g_steal_pointer(&diskstat); | |
2652 | QAPI_LIST_APPEND(tail, diskstatinfo); | |
2653 | diskstatinfo = NULL; | |
2654 | } | |
2655 | free(line); | |
2656 | fclose(fp); | |
2657 | return head; | |
2658 | #else | |
2659 | g_debug("disk stats reporting available only for Linux"); | |
2660 | return NULL; | |
2661 | #endif | |
2662 | } | |
2663 | ||
2664 | GuestDiskStatsInfoList *qmp_guest_get_diskstats(Error **errp) | |
2665 | { | |
2666 | return guest_get_diskstats(errp); | |
2667 | } | |
2668 | ||
1db8a0b0 ZP |
2669 | GuestCpuStatsList *qmp_guest_get_cpustats(Error **errp) |
2670 | { | |
2671 | GuestCpuStatsList *head = NULL, **tail = &head; | |
2672 | const char *cpustats = "/proc/stat"; | |
2673 | int clk_tck = sysconf(_SC_CLK_TCK); | |
2674 | FILE *fp; | |
2675 | size_t n; | |
2676 | char *line = NULL; | |
2677 | ||
2678 | fp = fopen(cpustats, "r"); | |
2679 | if (fp == NULL) { | |
2680 | error_setg_errno(errp, errno, "open(\"%s\")", cpustats); | |
2681 | return NULL; | |
2682 | } | |
2683 | ||
2684 | while (getline(&line, &n, fp) != -1) { | |
2685 | GuestCpuStats *cpustat = NULL; | |
2686 | GuestLinuxCpuStats *linuxcpustat; | |
2687 | int i; | |
2688 | unsigned long user, system, idle, iowait, irq, softirq, steal, guest; | |
2689 | unsigned long nice, guest_nice; | |
2690 | char name[64]; | |
2691 | ||
2692 | i = sscanf(line, "%s %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu", | |
2693 | name, &user, &nice, &system, &idle, &iowait, &irq, &softirq, | |
2694 | &steal, &guest, &guest_nice); | |
2695 | ||
2696 | /* drop "cpu 1 2 3 ...", get "cpuX 1 2 3 ..." only */ | |
2697 | if ((i == EOF) || strncmp(name, "cpu", 3) || (name[3] == '\0')) { | |
2698 | continue; | |
2699 | } | |
2700 | ||
2701 | if (i < 5) { | |
2702 | slog("Parsing cpu stat from %s failed, see \"man proc\"", cpustats); | |
2703 | break; | |
2704 | } | |
2705 | ||
2706 | cpustat = g_new0(GuestCpuStats, 1); | |
2707 | cpustat->type = GUEST_CPU_STATS_TYPE_LINUX; | |
2708 | ||
2709 | linuxcpustat = &cpustat->u.q_linux; | |
2710 | linuxcpustat->cpu = atoi(&name[3]); | |
2711 | linuxcpustat->user = user * 1000 / clk_tck; | |
2712 | linuxcpustat->nice = nice * 1000 / clk_tck; | |
2713 | linuxcpustat->system = system * 1000 / clk_tck; | |
2714 | linuxcpustat->idle = idle * 1000 / clk_tck; | |
2715 | ||
2716 | if (i > 5) { | |
2717 | linuxcpustat->has_iowait = true; | |
2718 | linuxcpustat->iowait = iowait * 1000 / clk_tck; | |
2719 | } | |
2720 | ||
2721 | if (i > 6) { | |
2722 | linuxcpustat->has_irq = true; | |
2723 | linuxcpustat->irq = irq * 1000 / clk_tck; | |
2724 | linuxcpustat->has_softirq = true; | |
2725 | linuxcpustat->softirq = softirq * 1000 / clk_tck; | |
2726 | } | |
2727 | ||
2728 | if (i > 8) { | |
2729 | linuxcpustat->has_steal = true; | |
2730 | linuxcpustat->steal = steal * 1000 / clk_tck; | |
2731 | } | |
2732 | ||
2733 | if (i > 9) { | |
2734 | linuxcpustat->has_guest = true; | |
2735 | linuxcpustat->guest = guest * 1000 / clk_tck; | |
2736 | } | |
2737 | ||
2738 | if (i > 10) { | |
2739 | linuxcpustat->has_guest = true; | |
2740 | linuxcpustat->guest = guest * 1000 / clk_tck; | |
2741 | linuxcpustat->has_guestnice = true; | |
2742 | linuxcpustat->guestnice = guest_nice * 1000 / clk_tck; | |
2743 | } | |
2744 | ||
2745 | QAPI_LIST_APPEND(tail, cpustat); | |
2746 | } | |
2747 | ||
2748 | free(line); | |
2749 | fclose(fp); | |
2750 | return head; | |
2751 | } | |
2752 | ||
e72c3f2e MR |
2753 | #else /* defined(__linux__) */ |
2754 | ||
77dbc81b | 2755 | void qmp_guest_suspend_disk(Error **errp) |
e72c3f2e | 2756 | { |
c6bd8c70 | 2757 | error_setg(errp, QERR_UNSUPPORTED); |
e72c3f2e MR |
2758 | } |
2759 | ||
77dbc81b | 2760 | void qmp_guest_suspend_ram(Error **errp) |
e72c3f2e | 2761 | { |
c6bd8c70 | 2762 | error_setg(errp, QERR_UNSUPPORTED); |
e72c3f2e MR |
2763 | } |
2764 | ||
77dbc81b | 2765 | void qmp_guest_suspend_hybrid(Error **errp) |
e72c3f2e | 2766 | { |
c6bd8c70 | 2767 | error_setg(errp, QERR_UNSUPPORTED); |
e72c3f2e MR |
2768 | } |
2769 | ||
d2baff62 LE |
2770 | GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp) |
2771 | { | |
c6bd8c70 | 2772 | error_setg(errp, QERR_UNSUPPORTED); |
d2baff62 LE |
2773 | return NULL; |
2774 | } | |
2775 | ||
cbb65fc2 LE |
2776 | int64_t qmp_guest_set_vcpus(GuestLogicalProcessorList *vcpus, Error **errp) |
2777 | { | |
c6bd8c70 | 2778 | error_setg(errp, QERR_UNSUPPORTED); |
cbb65fc2 LE |
2779 | return -1; |
2780 | } | |
2781 | ||
a065aaa9 HZ |
2782 | GuestMemoryBlockList *qmp_guest_get_memory_blocks(Error **errp) |
2783 | { | |
c6bd8c70 | 2784 | error_setg(errp, QERR_UNSUPPORTED); |
a065aaa9 HZ |
2785 | return NULL; |
2786 | } | |
2787 | ||
2788 | GuestMemoryBlockResponseList * | |
2789 | qmp_guest_set_memory_blocks(GuestMemoryBlockList *mem_blks, Error **errp) | |
2790 | { | |
c6bd8c70 | 2791 | error_setg(errp, QERR_UNSUPPORTED); |
a065aaa9 HZ |
2792 | return NULL; |
2793 | } | |
2794 | ||
2795 | GuestMemoryBlockInfo *qmp_guest_get_memory_block_info(Error **errp) | |
2796 | { | |
c6bd8c70 | 2797 | error_setg(errp, QERR_UNSUPPORTED); |
a065aaa9 HZ |
2798 | return NULL; |
2799 | } | |
2800 | ||
d35d4cb5 MR |
2801 | #endif |
2802 | ||
59e35c7b AD |
2803 | #ifdef HAVE_GETIFADDRS |
2804 | static GuestNetworkInterface * | |
2805 | guest_find_interface(GuestNetworkInterfaceList *head, | |
2806 | const char *name) | |
2807 | { | |
2808 | for (; head; head = head->next) { | |
2809 | if (strcmp(head->value->name, name) == 0) { | |
2810 | return head->value; | |
2811 | } | |
2812 | } | |
2813 | ||
2814 | return NULL; | |
2815 | } | |
2816 | ||
2817 | static int guest_get_network_stats(const char *name, | |
2818 | GuestNetworkInterfaceStat *stats) | |
2819 | { | |
70335c46 | 2820 | #ifdef CONFIG_LINUX |
59e35c7b AD |
2821 | int name_len; |
2822 | char const *devinfo = "/proc/net/dev"; | |
2823 | FILE *fp; | |
2824 | char *line = NULL, *colon; | |
2825 | size_t n = 0; | |
2826 | fp = fopen(devinfo, "r"); | |
2827 | if (!fp) { | |
a539dc8a AD |
2828 | g_debug("failed to open network stats %s: %s", devinfo, |
2829 | g_strerror(errno)); | |
59e35c7b AD |
2830 | return -1; |
2831 | } | |
2832 | name_len = strlen(name); | |
2833 | while (getline(&line, &n, fp) != -1) { | |
2834 | long long dummy; | |
2835 | long long rx_bytes; | |
2836 | long long rx_packets; | |
2837 | long long rx_errs; | |
2838 | long long rx_dropped; | |
2839 | long long tx_bytes; | |
2840 | long long tx_packets; | |
2841 | long long tx_errs; | |
2842 | long long tx_dropped; | |
2843 | char *trim_line; | |
2844 | trim_line = g_strchug(line); | |
2845 | if (trim_line[0] == '\0') { | |
2846 | continue; | |
2847 | } | |
2848 | colon = strchr(trim_line, ':'); | |
2849 | if (!colon) { | |
2850 | continue; | |
2851 | } | |
2852 | if (colon - name_len == trim_line && | |
2853 | strncmp(trim_line, name, name_len) == 0) { | |
2854 | if (sscanf(colon + 1, | |
2855 | "%lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld", | |
2856 | &rx_bytes, &rx_packets, &rx_errs, &rx_dropped, | |
2857 | &dummy, &dummy, &dummy, &dummy, | |
2858 | &tx_bytes, &tx_packets, &tx_errs, &tx_dropped, | |
2859 | &dummy, &dummy, &dummy, &dummy) != 16) { | |
2860 | continue; | |
2861 | } | |
2862 | stats->rx_bytes = rx_bytes; | |
2863 | stats->rx_packets = rx_packets; | |
2864 | stats->rx_errs = rx_errs; | |
2865 | stats->rx_dropped = rx_dropped; | |
2866 | stats->tx_bytes = tx_bytes; | |
2867 | stats->tx_packets = tx_packets; | |
2868 | stats->tx_errs = tx_errs; | |
2869 | stats->tx_dropped = tx_dropped; | |
2870 | fclose(fp); | |
2871 | g_free(line); | |
2872 | return 0; | |
2873 | } | |
2874 | } | |
2875 | fclose(fp); | |
2876 | g_free(line); | |
2877 | g_debug("/proc/net/dev: Interface '%s' not found", name); | |
a539dc8a AD |
2878 | #else /* !CONFIG_LINUX */ |
2879 | g_debug("Network stats reporting available only for Linux"); | |
2880 | #endif /* !CONFIG_LINUX */ | |
59e35c7b AD |
2881 | return -1; |
2882 | } | |
2883 | ||
a1241094 AI |
2884 | #ifndef __FreeBSD__ |
2885 | /* | |
2886 | * Fill "buf" with MAC address by ifaddrs. Pointer buf must point to a | |
2887 | * buffer with ETHER_ADDR_LEN length at least. | |
2888 | * | |
2889 | * Returns false in case of an error, otherwise true. "obtained" argument | |
2890 | * is true if a MAC address was obtained successful, otherwise false. | |
2891 | */ | |
2892 | bool guest_get_hw_addr(struct ifaddrs *ifa, unsigned char *buf, | |
2893 | bool *obtained, Error **errp) | |
2894 | { | |
2895 | struct ifreq ifr; | |
2896 | int sock; | |
2897 | ||
2898 | *obtained = false; | |
2899 | ||
2900 | /* we haven't obtained HW address yet */ | |
2901 | sock = socket(PF_INET, SOCK_STREAM, 0); | |
2902 | if (sock == -1) { | |
2903 | error_setg_errno(errp, errno, "failed to create socket"); | |
2904 | return false; | |
2905 | } | |
2906 | ||
2907 | memset(&ifr, 0, sizeof(ifr)); | |
2908 | pstrcpy(ifr.ifr_name, IF_NAMESIZE, ifa->ifa_name); | |
2909 | if (ioctl(sock, SIOCGIFHWADDR, &ifr) == -1) { | |
2910 | /* | |
2911 | * We can't get the hw addr of this interface, but that's not a | |
2912 | * fatal error. | |
2913 | */ | |
2914 | if (errno == EADDRNOTAVAIL) { | |
2915 | /* The interface doesn't have a hw addr (e.g. loopback). */ | |
2916 | g_debug("failed to get MAC address of %s: %s", | |
2917 | ifa->ifa_name, strerror(errno)); | |
2918 | } else{ | |
2919 | g_warning("failed to get MAC address of %s: %s", | |
2920 | ifa->ifa_name, strerror(errno)); | |
2921 | } | |
2922 | } else { | |
2923 | #ifdef CONFIG_SOLARIS | |
2924 | memcpy(buf, &ifr.ifr_addr.sa_data, ETHER_ADDR_LEN); | |
2925 | #else | |
2926 | memcpy(buf, &ifr.ifr_hwaddr.sa_data, ETHER_ADDR_LEN); | |
2927 | #endif | |
2928 | *obtained = true; | |
2929 | } | |
2930 | close(sock); | |
2931 | return true; | |
2932 | } | |
2933 | #endif /* __FreeBSD__ */ | |
2934 | ||
59e35c7b AD |
2935 | /* |
2936 | * Build information about guest interfaces | |
2937 | */ | |
2938 | GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp) | |
2939 | { | |
2940 | GuestNetworkInterfaceList *head = NULL, **tail = &head; | |
2941 | struct ifaddrs *ifap, *ifa; | |
2942 | ||
2943 | if (getifaddrs(&ifap) < 0) { | |
2944 | error_setg_errno(errp, errno, "getifaddrs failed"); | |
2945 | goto error; | |
2946 | } | |
2947 | ||
2948 | for (ifa = ifap; ifa; ifa = ifa->ifa_next) { | |
2949 | GuestNetworkInterface *info; | |
2950 | GuestIpAddressList **address_tail; | |
2951 | GuestIpAddress *address_item = NULL; | |
2952 | GuestNetworkInterfaceStat *interface_stat = NULL; | |
2953 | char addr4[INET_ADDRSTRLEN]; | |
2954 | char addr6[INET6_ADDRSTRLEN]; | |
a1241094 AI |
2955 | unsigned char mac_addr[ETHER_ADDR_LEN]; |
2956 | bool obtained; | |
59e35c7b AD |
2957 | void *p; |
2958 | ||
2959 | g_debug("Processing %s interface", ifa->ifa_name); | |
2960 | ||
2961 | info = guest_find_interface(head, ifa->ifa_name); | |
2962 | ||
2963 | if (!info) { | |
2964 | info = g_malloc0(sizeof(*info)); | |
2965 | info->name = g_strdup(ifa->ifa_name); | |
2966 | ||
2967 | QAPI_LIST_APPEND(tail, info); | |
2968 | } | |
2969 | ||
aec0730e | 2970 | if (!info->has_hardware_address) { |
a1241094 | 2971 | if (!guest_get_hw_addr(ifa, mac_addr, &obtained, errp)) { |
59e35c7b AD |
2972 | goto error; |
2973 | } | |
a1241094 | 2974 | if (obtained) { |
aec0730e AD |
2975 | info->hardware_address = |
2976 | g_strdup_printf("%02x:%02x:%02x:%02x:%02x:%02x", | |
2977 | (int) mac_addr[0], (int) mac_addr[1], | |
2978 | (int) mac_addr[2], (int) mac_addr[3], | |
2979 | (int) mac_addr[4], (int) mac_addr[5]); | |
aec0730e AD |
2980 | info->has_hardware_address = true; |
2981 | } | |
59e35c7b AD |
2982 | } |
2983 | ||
2984 | if (ifa->ifa_addr && | |
2985 | ifa->ifa_addr->sa_family == AF_INET) { | |
2986 | /* interface with IPv4 address */ | |
2987 | p = &((struct sockaddr_in *)ifa->ifa_addr)->sin_addr; | |
2988 | if (!inet_ntop(AF_INET, p, addr4, sizeof(addr4))) { | |
2989 | error_setg_errno(errp, errno, "inet_ntop failed"); | |
2990 | goto error; | |
2991 | } | |
2992 | ||
2993 | address_item = g_malloc0(sizeof(*address_item)); | |
2994 | address_item->ip_address = g_strdup(addr4); | |
2995 | address_item->ip_address_type = GUEST_IP_ADDRESS_TYPE_IPV4; | |
2996 | ||
2997 | if (ifa->ifa_netmask) { | |
2998 | /* Count the number of set bits in netmask. | |
2999 | * This is safe as '1' and '0' cannot be shuffled in netmask. */ | |
3000 | p = &((struct sockaddr_in *)ifa->ifa_netmask)->sin_addr; | |
3001 | address_item->prefix = ctpop32(((uint32_t *) p)[0]); | |
3002 | } | |
3003 | } else if (ifa->ifa_addr && | |
3004 | ifa->ifa_addr->sa_family == AF_INET6) { | |
3005 | /* interface with IPv6 address */ | |
3006 | p = &((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_addr; | |
3007 | if (!inet_ntop(AF_INET6, p, addr6, sizeof(addr6))) { | |
3008 | error_setg_errno(errp, errno, "inet_ntop failed"); | |
3009 | goto error; | |
3010 | } | |
3011 | ||
3012 | address_item = g_malloc0(sizeof(*address_item)); | |
3013 | address_item->ip_address = g_strdup(addr6); | |
3014 | address_item->ip_address_type = GUEST_IP_ADDRESS_TYPE_IPV6; | |
3015 | ||
3016 | if (ifa->ifa_netmask) { | |
3017 | /* Count the number of set bits in netmask. | |
3018 | * This is safe as '1' and '0' cannot be shuffled in netmask. */ | |
3019 | p = &((struct sockaddr_in6 *)ifa->ifa_netmask)->sin6_addr; | |
3020 | address_item->prefix = | |
3021 | ctpop32(((uint32_t *) p)[0]) + | |
3022 | ctpop32(((uint32_t *) p)[1]) + | |
3023 | ctpop32(((uint32_t *) p)[2]) + | |
3024 | ctpop32(((uint32_t *) p)[3]); | |
3025 | } | |
3026 | } | |
3027 | ||
3028 | if (!address_item) { | |
3029 | continue; | |
3030 | } | |
3031 | ||
3032 | address_tail = &info->ip_addresses; | |
3033 | while (*address_tail) { | |
3034 | address_tail = &(*address_tail)->next; | |
3035 | } | |
3036 | QAPI_LIST_APPEND(address_tail, address_item); | |
3037 | ||
3038 | info->has_ip_addresses = true; | |
3039 | ||
3040 | if (!info->has_statistics) { | |
3041 | interface_stat = g_malloc0(sizeof(*interface_stat)); | |
3042 | if (guest_get_network_stats(info->name, interface_stat) == -1) { | |
3043 | info->has_statistics = false; | |
3044 | g_free(interface_stat); | |
3045 | } else { | |
3046 | info->statistics = interface_stat; | |
3047 | info->has_statistics = true; | |
3048 | } | |
3049 | } | |
3050 | } | |
3051 | ||
3052 | freeifaddrs(ifap); | |
3053 | return head; | |
3054 | ||
3055 | error: | |
3056 | freeifaddrs(ifap); | |
3057 | qapi_free_GuestNetworkInterfaceList(head); | |
3058 | return NULL; | |
3059 | } | |
3060 | ||
3061 | #else | |
3062 | ||
3063 | GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp) | |
3064 | { | |
3065 | error_setg(errp, QERR_UNSUPPORTED); | |
3066 | return NULL; | |
3067 | } | |
3068 | ||
3069 | #endif /* HAVE_GETIFADDRS */ | |
3070 | ||
d35d4cb5 MR |
3071 | #if !defined(CONFIG_FSFREEZE) |
3072 | ||
46d4c572 TS |
3073 | GuestFilesystemInfoList *qmp_guest_get_fsinfo(Error **errp) |
3074 | { | |
c6bd8c70 | 3075 | error_setg(errp, QERR_UNSUPPORTED); |
46d4c572 TS |
3076 | return NULL; |
3077 | } | |
3078 | ||
77dbc81b | 3079 | GuestFsfreezeStatus qmp_guest_fsfreeze_status(Error **errp) |
e72c3f2e | 3080 | { |
c6bd8c70 | 3081 | error_setg(errp, QERR_UNSUPPORTED); |
d35d4cb5 MR |
3082 | |
3083 | return 0; | |
e72c3f2e MR |
3084 | } |
3085 | ||
77dbc81b | 3086 | int64_t qmp_guest_fsfreeze_freeze(Error **errp) |
e72c3f2e | 3087 | { |
c6bd8c70 | 3088 | error_setg(errp, QERR_UNSUPPORTED); |
d35d4cb5 MR |
3089 | |
3090 | return 0; | |
e72c3f2e MR |
3091 | } |
3092 | ||
e99bce20 TS |
3093 | int64_t qmp_guest_fsfreeze_freeze_list(bool has_mountpoints, |
3094 | strList *mountpoints, | |
3095 | Error **errp) | |
3096 | { | |
c6bd8c70 | 3097 | error_setg(errp, QERR_UNSUPPORTED); |
e99bce20 TS |
3098 | |
3099 | return 0; | |
3100 | } | |
3101 | ||
77dbc81b | 3102 | int64_t qmp_guest_fsfreeze_thaw(Error **errp) |
e72c3f2e | 3103 | { |
c6bd8c70 | 3104 | error_setg(errp, QERR_UNSUPPORTED); |
d35d4cb5 MR |
3105 | |
3106 | return 0; | |
e72c3f2e | 3107 | } |
fed39564 TG |
3108 | |
3109 | GuestDiskInfoList *qmp_guest_get_disks(Error **errp) | |
3110 | { | |
3111 | error_setg(errp, QERR_UNSUPPORTED); | |
3112 | return NULL; | |
3113 | } | |
3114 | ||
3569664e | 3115 | GuestDiskStatsInfoList *qmp_guest_get_diskstats(Error **errp) |
3116 | { | |
3117 | error_setg(errp, QERR_UNSUPPORTED); | |
3118 | return NULL; | |
3119 | } | |
3120 | ||
1db8a0b0 ZP |
3121 | GuestCpuStatsList *qmp_guest_get_cpustats(Error **errp) |
3122 | { | |
3123 | error_setg(errp, QERR_UNSUPPORTED); | |
3124 | return NULL; | |
3125 | } | |
3569664e | 3126 | |
eab5fd59 PB |
3127 | #endif /* CONFIG_FSFREEZE */ |
3128 | ||
3129 | #if !defined(CONFIG_FSTRIM) | |
e82855d9 JO |
3130 | GuestFilesystemTrimResponse * |
3131 | qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **errp) | |
eab5fd59 | 3132 | { |
c6bd8c70 | 3133 | error_setg(errp, QERR_UNSUPPORTED); |
e82855d9 | 3134 | return NULL; |
eab5fd59 | 3135 | } |
e72c3f2e MR |
3136 | #endif |
3137 | ||
0e4ef702 TH |
3138 | /* add unsupported commands to the list of blocked RPCs */ |
3139 | GList *ga_command_init_blockedrpcs(GList *blockedrpcs) | |
1281c08a TS |
3140 | { |
3141 | #if !defined(__linux__) | |
3142 | { | |
3143 | const char *list[] = { | |
3144 | "guest-suspend-disk", "guest-suspend-ram", | |
59e35c7b | 3145 | "guest-suspend-hybrid", "guest-get-vcpus", "guest-set-vcpus", |
0dd38a03 | 3146 | "guest-get-memory-blocks", "guest-set-memory-blocks", |
28d8dd35 BS |
3147 | "guest-get-memory-block-size", "guest-get-memory-block-info", |
3148 | NULL}; | |
1281c08a TS |
3149 | char **p = (char **)list; |
3150 | ||
3151 | while (*p) { | |
0e4ef702 | 3152 | blockedrpcs = g_list_append(blockedrpcs, g_strdup(*p++)); |
1281c08a TS |
3153 | } |
3154 | } | |
3155 | #endif | |
3156 | ||
59e35c7b | 3157 | #if !defined(HAVE_GETIFADDRS) |
0e4ef702 | 3158 | blockedrpcs = g_list_append(blockedrpcs, |
59e35c7b AD |
3159 | g_strdup("guest-network-get-interfaces")); |
3160 | #endif | |
3161 | ||
1281c08a TS |
3162 | #if !defined(CONFIG_FSFREEZE) |
3163 | { | |
3164 | const char *list[] = { | |
3165 | "guest-get-fsinfo", "guest-fsfreeze-status", | |
3166 | "guest-fsfreeze-freeze", "guest-fsfreeze-freeze-list", | |
fed39564 TG |
3167 | "guest-fsfreeze-thaw", "guest-get-fsinfo", |
3168 | "guest-get-disks", NULL}; | |
1281c08a TS |
3169 | char **p = (char **)list; |
3170 | ||
3171 | while (*p) { | |
0e4ef702 | 3172 | blockedrpcs = g_list_append(blockedrpcs, g_strdup(*p++)); |
1281c08a TS |
3173 | } |
3174 | } | |
3175 | #endif | |
3176 | ||
3177 | #if !defined(CONFIG_FSTRIM) | |
0e4ef702 | 3178 | blockedrpcs = g_list_append(blockedrpcs, g_strdup("guest-fstrim")); |
1281c08a TS |
3179 | #endif |
3180 | ||
0e4ef702 | 3181 | blockedrpcs = g_list_append(blockedrpcs, g_strdup("guest-get-devices")); |
2e4211ce | 3182 | |
0e4ef702 | 3183 | return blockedrpcs; |
1281c08a TS |
3184 | } |
3185 | ||
e3d4d252 MR |
3186 | /* register init/cleanup routines for stateful command groups */ |
3187 | void ga_command_state_init(GAState *s, GACommandState *cs) | |
3188 | { | |
7006b9cf | 3189 | #if defined(CONFIG_FSFREEZE) |
f22d85e9 | 3190 | ga_command_state_add(cs, NULL, guest_fsfreeze_cleanup); |
7006b9cf | 3191 | #endif |
e3d4d252 | 3192 | } |
161a56a9 | 3193 | |
e674605f TG |
3194 | #ifdef HAVE_UTMPX |
3195 | ||
161a56a9 VF |
3196 | #define QGA_MICRO_SECOND_TO_SECOND 1000000 |
3197 | ||
3198 | static double ga_get_login_time(struct utmpx *user_info) | |
3199 | { | |
3200 | double seconds = (double)user_info->ut_tv.tv_sec; | |
3201 | double useconds = (double)user_info->ut_tv.tv_usec; | |
3202 | useconds /= QGA_MICRO_SECOND_TO_SECOND; | |
3203 | return seconds + useconds; | |
3204 | } | |
3205 | ||
b90abbac | 3206 | GuestUserList *qmp_guest_get_users(Error **errp) |
161a56a9 VF |
3207 | { |
3208 | GHashTable *cache = NULL; | |
95b3a8c8 | 3209 | GuestUserList *head = NULL, **tail = &head; |
161a56a9 VF |
3210 | struct utmpx *user_info = NULL; |
3211 | gpointer value = NULL; | |
3212 | GuestUser *user = NULL; | |
161a56a9 VF |
3213 | double login_time = 0; |
3214 | ||
3215 | cache = g_hash_table_new(g_str_hash, g_str_equal); | |
3216 | setutxent(); | |
3217 | ||
3218 | for (;;) { | |
3219 | user_info = getutxent(); | |
3220 | if (user_info == NULL) { | |
3221 | break; | |
3222 | } else if (user_info->ut_type != USER_PROCESS) { | |
3223 | continue; | |
3224 | } else if (g_hash_table_contains(cache, user_info->ut_user)) { | |
3225 | value = g_hash_table_lookup(cache, user_info->ut_user); | |
3226 | user = (GuestUser *)value; | |
3227 | login_time = ga_get_login_time(user_info); | |
3228 | /* We're ensuring the earliest login time to be sent */ | |
3229 | if (login_time < user->login_time) { | |
3230 | user->login_time = login_time; | |
3231 | } | |
3232 | continue; | |
3233 | } | |
3234 | ||
95b3a8c8 EB |
3235 | user = g_new0(GuestUser, 1); |
3236 | user->user = g_strdup(user_info->ut_user); | |
3237 | user->login_time = ga_get_login_time(user_info); | |
161a56a9 | 3238 | |
95b3a8c8 | 3239 | g_hash_table_insert(cache, user->user, user); |
161a56a9 | 3240 | |
95b3a8c8 | 3241 | QAPI_LIST_APPEND(tail, user); |
161a56a9 VF |
3242 | } |
3243 | endutxent(); | |
3244 | g_hash_table_destroy(cache); | |
3245 | return head; | |
3246 | } | |
e674605f TG |
3247 | |
3248 | #else | |
3249 | ||
3250 | GuestUserList *qmp_guest_get_users(Error **errp) | |
3251 | { | |
3252 | error_setg(errp, QERR_UNSUPPORTED); | |
3253 | return NULL; | |
3254 | } | |
3255 | ||
3256 | #endif | |
9848f797 TG |
3257 | |
3258 | /* Replace escaped special characters with theire real values. The replacement | |
3259 | * is done in place -- returned value is in the original string. | |
3260 | */ | |
3261 | static void ga_osrelease_replace_special(gchar *value) | |
3262 | { | |
3263 | gchar *p, *p2, quote; | |
3264 | ||
3265 | /* Trim the string at first space or semicolon if it is not enclosed in | |
3266 | * single or double quotes. */ | |
3267 | if ((value[0] != '"') || (value[0] == '\'')) { | |
3268 | p = strchr(value, ' '); | |
3269 | if (p != NULL) { | |
3270 | *p = 0; | |
3271 | } | |
3272 | p = strchr(value, ';'); | |
3273 | if (p != NULL) { | |
3274 | *p = 0; | |
3275 | } | |
3276 | return; | |
3277 | } | |
3278 | ||
3279 | quote = value[0]; | |
3280 | p2 = value; | |
3281 | p = value + 1; | |
3282 | while (*p != 0) { | |
3283 | if (*p == '\\') { | |
3284 | p++; | |
3285 | switch (*p) { | |
3286 | case '$': | |
3287 | case '\'': | |
3288 | case '"': | |
3289 | case '\\': | |
3290 | case '`': | |
3291 | break; | |
3292 | default: | |
3293 | /* Keep literal backslash followed by whatever is there */ | |
3294 | p--; | |
3295 | break; | |
3296 | } | |
3297 | } else if (*p == quote) { | |
3298 | *p2 = 0; | |
3299 | break; | |
3300 | } | |
3301 | *(p2++) = *(p++); | |
3302 | } | |
3303 | } | |
3304 | ||
3305 | static GKeyFile *ga_parse_osrelease(const char *fname) | |
3306 | { | |
3307 | gchar *content = NULL; | |
3308 | gchar *content2 = NULL; | |
3309 | GError *err = NULL; | |
3310 | GKeyFile *keys = g_key_file_new(); | |
3311 | const char *group = "[os-release]\n"; | |
3312 | ||
3313 | if (!g_file_get_contents(fname, &content, NULL, &err)) { | |
3314 | slog("failed to read '%s', error: %s", fname, err->message); | |
3315 | goto fail; | |
3316 | } | |
3317 | ||
3318 | if (!g_utf8_validate(content, -1, NULL)) { | |
3319 | slog("file is not utf-8 encoded: %s", fname); | |
3320 | goto fail; | |
3321 | } | |
3322 | content2 = g_strdup_printf("%s%s", group, content); | |
3323 | ||
3324 | if (!g_key_file_load_from_data(keys, content2, -1, G_KEY_FILE_NONE, | |
3325 | &err)) { | |
3326 | slog("failed to parse file '%s', error: %s", fname, err->message); | |
3327 | goto fail; | |
3328 | } | |
3329 | ||
3330 | g_free(content); | |
3331 | g_free(content2); | |
3332 | return keys; | |
3333 | ||
3334 | fail: | |
3335 | g_error_free(err); | |
3336 | g_free(content); | |
3337 | g_free(content2); | |
3338 | g_key_file_free(keys); | |
3339 | return NULL; | |
3340 | } | |
3341 | ||
3342 | GuestOSInfo *qmp_guest_get_osinfo(Error **errp) | |
3343 | { | |
3344 | GuestOSInfo *info = NULL; | |
3345 | struct utsname kinfo; | |
339ca68b TG |
3346 | GKeyFile *osrelease = NULL; |
3347 | const char *qga_os_release = g_getenv("QGA_OS_RELEASE"); | |
9848f797 TG |
3348 | |
3349 | info = g_new0(GuestOSInfo, 1); | |
3350 | ||
3351 | if (uname(&kinfo) != 0) { | |
3352 | error_setg_errno(errp, errno, "uname failed"); | |
3353 | } else { | |
3354 | info->has_kernel_version = true; | |
3355 | info->kernel_version = g_strdup(kinfo.version); | |
3356 | info->has_kernel_release = true; | |
3357 | info->kernel_release = g_strdup(kinfo.release); | |
3358 | info->has_machine = true; | |
3359 | info->machine = g_strdup(kinfo.machine); | |
3360 | } | |
3361 | ||
339ca68b TG |
3362 | if (qga_os_release != NULL) { |
3363 | osrelease = ga_parse_osrelease(qga_os_release); | |
3364 | } else { | |
3365 | osrelease = ga_parse_osrelease("/etc/os-release"); | |
3366 | if (osrelease == NULL) { | |
3367 | osrelease = ga_parse_osrelease("/usr/lib/os-release"); | |
3368 | } | |
9848f797 TG |
3369 | } |
3370 | ||
3371 | if (osrelease != NULL) { | |
3372 | char *value; | |
3373 | ||
3374 | #define GET_FIELD(field, osfield) do { \ | |
3375 | value = g_key_file_get_value(osrelease, "os-release", osfield, NULL); \ | |
3376 | if (value != NULL) { \ | |
3377 | ga_osrelease_replace_special(value); \ | |
3378 | info->has_ ## field = true; \ | |
3379 | info->field = value; \ | |
3380 | } \ | |
3381 | } while (0) | |
3382 | GET_FIELD(id, "ID"); | |
3383 | GET_FIELD(name, "NAME"); | |
3384 | GET_FIELD(pretty_name, "PRETTY_NAME"); | |
3385 | GET_FIELD(version, "VERSION"); | |
3386 | GET_FIELD(version_id, "VERSION_ID"); | |
3387 | GET_FIELD(variant, "VARIANT"); | |
3388 | GET_FIELD(variant_id, "VARIANT_ID"); | |
3389 | #undef GET_FIELD | |
3390 | ||
3391 | g_key_file_free(osrelease); | |
3392 | } | |
3393 | ||
3394 | return info; | |
3395 | } | |
2e4211ce TG |
3396 | |
3397 | GuestDeviceInfoList *qmp_guest_get_devices(Error **errp) | |
3398 | { | |
3399 | error_setg(errp, QERR_UNSUPPORTED); | |
3400 | ||
3401 | return NULL; | |
3402 | } | |
548fb0da MAL |
3403 | |
3404 | #ifndef HOST_NAME_MAX | |
3405 | # ifdef _POSIX_HOST_NAME_MAX | |
3406 | # define HOST_NAME_MAX _POSIX_HOST_NAME_MAX | |
3407 | # else | |
3408 | # define HOST_NAME_MAX 255 | |
3409 | # endif | |
3410 | #endif | |
3411 | ||
3412 | char *qga_get_host_name(Error **errp) | |
3413 | { | |
3414 | long len = -1; | |
3415 | g_autofree char *hostname = NULL; | |
3416 | ||
3417 | #ifdef _SC_HOST_NAME_MAX | |
3418 | len = sysconf(_SC_HOST_NAME_MAX); | |
3419 | #endif /* _SC_HOST_NAME_MAX */ | |
3420 | ||
3421 | if (len < 0) { | |
3422 | len = HOST_NAME_MAX; | |
3423 | } | |
3424 | ||
3425 | /* Unfortunately, gethostname() below does not guarantee a | |
3426 | * NULL terminated string. Therefore, allocate one byte more | |
3427 | * to be sure. */ | |
3428 | hostname = g_new0(char, len + 1); | |
3429 | ||
3430 | if (gethostname(hostname, len) < 0) { | |
3431 | error_setg_errno(errp, errno, | |
3432 | "cannot get hostname"); | |
3433 | return NULL; | |
3434 | } | |
3435 | ||
3436 | return g_steal_pointer(&hostname); | |
3437 | } |