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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> |
7006b9cf | 36 | #include <linux/fs.h> |
25b5ff1a | 37 | #include <sys/statvfs.h> |
22668881 | 38 | #include <linux/nvme_ioctl.h> |
e3d4d252 | 39 | |
b616105a TG |
40 | #ifdef CONFIG_LIBUDEV |
41 | #include <libudev.h> | |
42 | #endif | |
43 | ||
eab5fd59 | 44 | #ifdef FIFREEZE |
e72c3f2e MR |
45 | #define CONFIG_FSFREEZE |
46 | #endif | |
eab5fd59 PB |
47 | #ifdef FITRIM |
48 | #define CONFIG_FSTRIM | |
49 | #endif | |
e72c3f2e MR |
50 | #endif |
51 | ||
c6cd588b AI |
52 | #ifdef __FreeBSD__ |
53 | /* | |
54 | * The code under HAVE_GETIFADDRS condition can't be compiled in FreeBSD. | |
55 | * Fix it in one of the following patches. | |
56 | */ | |
57 | #undef HAVE_GETIFADDRS | |
58 | #endif | |
59 | ||
59e35c7b AD |
60 | #ifdef HAVE_GETIFADDRS |
61 | #include <arpa/inet.h> | |
62 | #include <sys/socket.h> | |
63 | #include <net/if.h> | |
64 | #include <sys/types.h> | |
65 | #include <ifaddrs.h> | |
66 | #ifdef CONFIG_SOLARIS | |
67 | #include <sys/sockio.h> | |
68 | #endif | |
69 | #endif | |
70 | ||
77dbc81b | 71 | static void ga_wait_child(pid_t pid, int *status, Error **errp) |
d220a6df LC |
72 | { |
73 | pid_t rpid; | |
74 | ||
75 | *status = 0; | |
76 | ||
77 | do { | |
78 | rpid = waitpid(pid, status, 0); | |
79 | } while (rpid == -1 && errno == EINTR); | |
80 | ||
81 | if (rpid == -1) { | |
77dbc81b MA |
82 | error_setg_errno(errp, errno, "failed to wait for child (pid: %d)", |
83 | pid); | |
d220a6df LC |
84 | return; |
85 | } | |
86 | ||
87 | g_assert(rpid == pid); | |
88 | } | |
89 | ||
77dbc81b | 90 | void qmp_guest_shutdown(bool has_mode, const char *mode, Error **errp) |
e3d4d252 | 91 | { |
e3d4d252 | 92 | const char *shutdown_flag; |
d220a6df LC |
93 | Error *local_err = NULL; |
94 | pid_t pid; | |
3674838c | 95 | int status; |
e3d4d252 | 96 | |
c8ec041d AD |
97 | #ifdef CONFIG_SOLARIS |
98 | const char *powerdown_flag = "-i5"; | |
99 | const char *halt_flag = "-i0"; | |
100 | const char *reboot_flag = "-i6"; | |
101 | #else | |
102 | const char *powerdown_flag = "-P"; | |
103 | const char *halt_flag = "-H"; | |
104 | const char *reboot_flag = "-r"; | |
105 | #endif | |
106 | ||
e3d4d252 MR |
107 | slog("guest-shutdown called, mode: %s", mode); |
108 | if (!has_mode || strcmp(mode, "powerdown") == 0) { | |
c8ec041d | 109 | shutdown_flag = powerdown_flag; |
e3d4d252 | 110 | } else if (strcmp(mode, "halt") == 0) { |
c8ec041d | 111 | shutdown_flag = halt_flag; |
e3d4d252 | 112 | } else if (strcmp(mode, "reboot") == 0) { |
c8ec041d | 113 | shutdown_flag = reboot_flag; |
e3d4d252 | 114 | } else { |
77dbc81b | 115 | error_setg(errp, |
d220a6df | 116 | "mode is invalid (valid values are: halt|powerdown|reboot"); |
e3d4d252 MR |
117 | return; |
118 | } | |
119 | ||
d5dd3498 LC |
120 | pid = fork(); |
121 | if (pid == 0) { | |
e3d4d252 MR |
122 | /* child, start the shutdown */ |
123 | setsid(); | |
3674838c LC |
124 | reopen_fd_to_null(0); |
125 | reopen_fd_to_null(1); | |
126 | reopen_fd_to_null(2); | |
e3d4d252 | 127 | |
c8ec041d AD |
128 | #ifdef CONFIG_SOLARIS |
129 | execl("/sbin/shutdown", "shutdown", shutdown_flag, "-g0", "-y", | |
130 | "hypervisor initiated shutdown", (char *)NULL); | |
131 | #else | |
fcc41961 MAL |
132 | execl("/sbin/shutdown", "shutdown", "-h", shutdown_flag, "+0", |
133 | "hypervisor initiated shutdown", (char *)NULL); | |
c8ec041d | 134 | #endif |
3674838c | 135 | _exit(EXIT_FAILURE); |
d5dd3498 | 136 | } else if (pid < 0) { |
77dbc81b | 137 | error_setg_errno(errp, errno, "failed to create child process"); |
d220a6df | 138 | return; |
e3d4d252 | 139 | } |
d5dd3498 | 140 | |
d220a6df | 141 | ga_wait_child(pid, &status, &local_err); |
84d18f06 | 142 | if (local_err) { |
77dbc81b | 143 | error_propagate(errp, local_err); |
d220a6df LC |
144 | return; |
145 | } | |
146 | ||
147 | if (!WIFEXITED(status)) { | |
77dbc81b | 148 | error_setg(errp, "child process has terminated abnormally"); |
d220a6df LC |
149 | return; |
150 | } | |
151 | ||
152 | if (WEXITSTATUS(status)) { | |
77dbc81b | 153 | error_setg(errp, "child process has failed to shutdown"); |
d5dd3498 LC |
154 | return; |
155 | } | |
156 | ||
085d8134 | 157 | /* succeeded */ |
e3d4d252 MR |
158 | } |
159 | ||
2c958923 | 160 | void qmp_guest_set_time(bool has_time, int64_t time_ns, Error **errp) |
a1bca57f LL |
161 | { |
162 | int ret; | |
163 | int status; | |
164 | pid_t pid; | |
165 | Error *local_err = NULL; | |
166 | struct timeval tv; | |
5c6096e5 CH |
167 | static const char hwclock_path[] = "/sbin/hwclock"; |
168 | static int hwclock_available = -1; | |
169 | ||
170 | if (hwclock_available < 0) { | |
171 | hwclock_available = (access(hwclock_path, X_OK) == 0); | |
172 | } | |
173 | ||
174 | if (!hwclock_available) { | |
175 | error_setg(errp, QERR_UNSUPPORTED); | |
176 | return; | |
177 | } | |
a1bca57f | 178 | |
2c958923 MP |
179 | /* If user has passed a time, validate and set it. */ |
180 | if (has_time) { | |
00d2f370 MAL |
181 | GDate date = { 0, }; |
182 | ||
2c958923 MP |
183 | /* year-2038 will overflow in case time_t is 32bit */ |
184 | if (time_ns / 1000000000 != (time_t)(time_ns / 1000000000)) { | |
185 | error_setg(errp, "Time %" PRId64 " is too large", time_ns); | |
186 | return; | |
187 | } | |
188 | ||
189 | tv.tv_sec = time_ns / 1000000000; | |
190 | tv.tv_usec = (time_ns % 1000000000) / 1000; | |
00d2f370 MAL |
191 | g_date_set_time_t(&date, tv.tv_sec); |
192 | if (date.year < 1970 || date.year >= 2070) { | |
193 | error_setg_errno(errp, errno, "Invalid time"); | |
194 | return; | |
195 | } | |
2c958923 MP |
196 | |
197 | ret = settimeofday(&tv, NULL); | |
198 | if (ret < 0) { | |
199 | error_setg_errno(errp, errno, "Failed to set time to guest"); | |
200 | return; | |
201 | } | |
a1bca57f LL |
202 | } |
203 | ||
2c958923 MP |
204 | /* Now, if user has passed a time to set and the system time is set, we |
205 | * just need to synchronize the hardware clock. However, if no time was | |
206 | * passed, user is requesting the opposite: set the system time from the | |
1634df56 | 207 | * hardware clock (RTC). */ |
a1bca57f LL |
208 | pid = fork(); |
209 | if (pid == 0) { | |
210 | setsid(); | |
211 | reopen_fd_to_null(0); | |
212 | reopen_fd_to_null(1); | |
213 | reopen_fd_to_null(2); | |
214 | ||
2c958923 MP |
215 | /* Use '/sbin/hwclock -w' to set RTC from the system time, |
216 | * or '/sbin/hwclock -s' to set the system time from RTC. */ | |
fcc41961 | 217 | execl(hwclock_path, "hwclock", has_time ? "-w" : "-s", NULL); |
a1bca57f LL |
218 | _exit(EXIT_FAILURE); |
219 | } else if (pid < 0) { | |
220 | error_setg_errno(errp, errno, "failed to create child process"); | |
221 | return; | |
222 | } | |
223 | ||
224 | ga_wait_child(pid, &status, &local_err); | |
84d18f06 | 225 | if (local_err) { |
a1bca57f LL |
226 | error_propagate(errp, local_err); |
227 | return; | |
228 | } | |
229 | ||
230 | if (!WIFEXITED(status)) { | |
231 | error_setg(errp, "child process has terminated abnormally"); | |
232 | return; | |
233 | } | |
234 | ||
235 | if (WEXITSTATUS(status)) { | |
236 | error_setg(errp, "hwclock failed to set hardware clock to system time"); | |
237 | return; | |
238 | } | |
239 | } | |
240 | ||
895b00f6 MAL |
241 | typedef enum { |
242 | RW_STATE_NEW, | |
243 | RW_STATE_READING, | |
244 | RW_STATE_WRITING, | |
245 | } RwState; | |
246 | ||
5d3586b8 | 247 | struct GuestFileHandle { |
e3d4d252 MR |
248 | uint64_t id; |
249 | FILE *fh; | |
895b00f6 | 250 | RwState state; |
e3d4d252 | 251 | QTAILQ_ENTRY(GuestFileHandle) next; |
5d3586b8 | 252 | }; |
e3d4d252 MR |
253 | |
254 | static struct { | |
255 | QTAILQ_HEAD(, GuestFileHandle) filehandles; | |
b4fe97c8 DL |
256 | } guest_file_state = { |
257 | .filehandles = QTAILQ_HEAD_INITIALIZER(guest_file_state.filehandles), | |
258 | }; | |
e3d4d252 | 259 | |
39097daf | 260 | static int64_t guest_file_handle_add(FILE *fh, Error **errp) |
e3d4d252 MR |
261 | { |
262 | GuestFileHandle *gfh; | |
39097daf MR |
263 | int64_t handle; |
264 | ||
265 | handle = ga_get_fd_handle(ga_state, errp); | |
a903f40c MA |
266 | if (handle < 0) { |
267 | return -1; | |
39097daf | 268 | } |
e3d4d252 | 269 | |
f3a06403 | 270 | gfh = g_new0(GuestFileHandle, 1); |
39097daf | 271 | gfh->id = handle; |
e3d4d252 MR |
272 | gfh->fh = fh; |
273 | QTAILQ_INSERT_TAIL(&guest_file_state.filehandles, gfh, next); | |
39097daf MR |
274 | |
275 | return handle; | |
e3d4d252 MR |
276 | } |
277 | ||
5d3586b8 | 278 | GuestFileHandle *guest_file_handle_find(int64_t id, Error **errp) |
e3d4d252 MR |
279 | { |
280 | GuestFileHandle *gfh; | |
281 | ||
282 | QTAILQ_FOREACH(gfh, &guest_file_state.filehandles, next) | |
283 | { | |
284 | if (gfh->id == id) { | |
285 | return gfh; | |
286 | } | |
287 | } | |
288 | ||
77dbc81b | 289 | error_setg(errp, "handle '%" PRId64 "' has not been found", id); |
e3d4d252 MR |
290 | return NULL; |
291 | } | |
292 | ||
c689b4f1 LE |
293 | typedef const char * const ccpc; |
294 | ||
8fe6bbca LE |
295 | #ifndef O_BINARY |
296 | #define O_BINARY 0 | |
297 | #endif | |
298 | ||
c689b4f1 LE |
299 | /* http://pubs.opengroup.org/onlinepubs/9699919799/functions/fopen.html */ |
300 | static const struct { | |
301 | ccpc *forms; | |
302 | int oflag_base; | |
303 | } guest_file_open_modes[] = { | |
8fe6bbca LE |
304 | { (ccpc[]){ "r", NULL }, O_RDONLY }, |
305 | { (ccpc[]){ "rb", NULL }, O_RDONLY | O_BINARY }, | |
306 | { (ccpc[]){ "w", NULL }, O_WRONLY | O_CREAT | O_TRUNC }, | |
307 | { (ccpc[]){ "wb", NULL }, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY }, | |
308 | { (ccpc[]){ "a", NULL }, O_WRONLY | O_CREAT | O_APPEND }, | |
309 | { (ccpc[]){ "ab", NULL }, O_WRONLY | O_CREAT | O_APPEND | O_BINARY }, | |
310 | { (ccpc[]){ "r+", NULL }, O_RDWR }, | |
311 | { (ccpc[]){ "rb+", "r+b", NULL }, O_RDWR | O_BINARY }, | |
312 | { (ccpc[]){ "w+", NULL }, O_RDWR | O_CREAT | O_TRUNC }, | |
313 | { (ccpc[]){ "wb+", "w+b", NULL }, O_RDWR | O_CREAT | O_TRUNC | O_BINARY }, | |
314 | { (ccpc[]){ "a+", NULL }, O_RDWR | O_CREAT | O_APPEND }, | |
315 | { (ccpc[]){ "ab+", "a+b", NULL }, O_RDWR | O_CREAT | O_APPEND | O_BINARY } | |
c689b4f1 LE |
316 | }; |
317 | ||
318 | static int | |
77dbc81b | 319 | find_open_flag(const char *mode_str, Error **errp) |
c689b4f1 LE |
320 | { |
321 | unsigned mode; | |
322 | ||
323 | for (mode = 0; mode < ARRAY_SIZE(guest_file_open_modes); ++mode) { | |
324 | ccpc *form; | |
325 | ||
326 | form = guest_file_open_modes[mode].forms; | |
327 | while (*form != NULL && strcmp(*form, mode_str) != 0) { | |
328 | ++form; | |
329 | } | |
330 | if (*form != NULL) { | |
331 | break; | |
332 | } | |
333 | } | |
334 | ||
335 | if (mode == ARRAY_SIZE(guest_file_open_modes)) { | |
77dbc81b | 336 | error_setg(errp, "invalid file open mode '%s'", mode_str); |
c689b4f1 LE |
337 | return -1; |
338 | } | |
339 | return guest_file_open_modes[mode].oflag_base | O_NOCTTY | O_NONBLOCK; | |
340 | } | |
341 | ||
342 | #define DEFAULT_NEW_FILE_MODE (S_IRUSR | S_IWUSR | \ | |
343 | S_IRGRP | S_IWGRP | \ | |
344 | S_IROTH | S_IWOTH) | |
345 | ||
346 | static FILE * | |
77dbc81b | 347 | safe_open_or_create(const char *path, const char *mode, Error **errp) |
c689b4f1 | 348 | { |
c689b4f1 | 349 | int oflag; |
69f56c14 MAL |
350 | int fd = -1; |
351 | FILE *f = NULL; | |
c689b4f1 | 352 | |
69f56c14 MAL |
353 | oflag = find_open_flag(mode, errp); |
354 | if (oflag < 0) { | |
355 | goto end; | |
356 | } | |
c689b4f1 | 357 | |
69f56c14 MAL |
358 | /* If the caller wants / allows creation of a new file, we implement it |
359 | * with a two step process: open() + (open() / fchmod()). | |
360 | * | |
361 | * First we insist on creating the file exclusively as a new file. If | |
362 | * that succeeds, we're free to set any file-mode bits on it. (The | |
363 | * motivation is that we want to set those file-mode bits independently | |
364 | * of the current umask.) | |
365 | * | |
366 | * If the exclusive creation fails because the file already exists | |
367 | * (EEXIST is not possible for any other reason), we just attempt to | |
368 | * open the file, but in this case we won't be allowed to change the | |
369 | * file-mode bits on the preexistent file. | |
370 | * | |
371 | * The pathname should never disappear between the two open()s in | |
372 | * practice. If it happens, then someone very likely tried to race us. | |
373 | * In this case just go ahead and report the ENOENT from the second | |
374 | * open() to the caller. | |
375 | * | |
376 | * If the caller wants to open a preexistent file, then the first | |
377 | * open() is decisive and its third argument is ignored, and the second | |
378 | * open() and the fchmod() are never called. | |
379 | */ | |
1a89a17b | 380 | fd = qga_open_cloexec(path, oflag | ((oflag & O_CREAT) ? O_EXCL : 0), 0); |
69f56c14 MAL |
381 | if (fd == -1 && errno == EEXIST) { |
382 | oflag &= ~(unsigned)O_CREAT; | |
1a89a17b | 383 | fd = qga_open_cloexec(path, oflag, 0); |
69f56c14 MAL |
384 | } |
385 | if (fd == -1) { | |
386 | error_setg_errno(errp, errno, | |
387 | "failed to open file '%s' (mode: '%s')", | |
388 | path, mode); | |
389 | goto end; | |
c689b4f1 LE |
390 | } |
391 | ||
69f56c14 MAL |
392 | if ((oflag & O_CREAT) && fchmod(fd, DEFAULT_NEW_FILE_MODE) == -1) { |
393 | error_setg_errno(errp, errno, "failed to set permission " | |
394 | "0%03o on new file '%s' (mode: '%s')", | |
395 | (unsigned)DEFAULT_NEW_FILE_MODE, path, mode); | |
396 | goto end; | |
397 | } | |
398 | ||
399 | f = fdopen(fd, mode); | |
400 | if (f == NULL) { | |
401 | error_setg_errno(errp, errno, "failed to associate stdio stream with " | |
402 | "file descriptor %d, file '%s' (mode: '%s')", | |
403 | fd, path, mode); | |
404 | } | |
405 | ||
406 | end: | |
407 | if (f == NULL && fd != -1) { | |
408 | close(fd); | |
409 | if (oflag & O_CREAT) { | |
410 | unlink(path); | |
411 | } | |
412 | } | |
413 | return f; | |
c689b4f1 LE |
414 | } |
415 | ||
77dbc81b MA |
416 | int64_t qmp_guest_file_open(const char *path, bool has_mode, const char *mode, |
417 | Error **errp) | |
e3d4d252 MR |
418 | { |
419 | FILE *fh; | |
c689b4f1 | 420 | Error *local_err = NULL; |
85b6f6f5 | 421 | int64_t handle; |
e3d4d252 MR |
422 | |
423 | if (!has_mode) { | |
424 | mode = "r"; | |
425 | } | |
426 | slog("guest-file-open called, filepath: %s, mode: %s", path, mode); | |
c689b4f1 LE |
427 | fh = safe_open_or_create(path, mode, &local_err); |
428 | if (local_err != NULL) { | |
77dbc81b | 429 | error_propagate(errp, local_err); |
e3d4d252 MR |
430 | return -1; |
431 | } | |
432 | ||
433 | /* set fd non-blocking to avoid common use cases (like reading from a | |
434 | * named pipe) from hanging the agent | |
435 | */ | |
b0a8f9ad MAL |
436 | if (!g_unix_set_fd_nonblocking(fileno(fh), true, NULL)) { |
437 | fclose(fh); | |
438 | error_setg_errno(errp, errno, "Failed to set FD nonblocking"); | |
439 | return -1; | |
440 | } | |
e3d4d252 | 441 | |
77dbc81b | 442 | handle = guest_file_handle_add(fh, errp); |
a903f40c | 443 | if (handle < 0) { |
39097daf MR |
444 | fclose(fh); |
445 | return -1; | |
446 | } | |
447 | ||
d607a523 | 448 | slog("guest-file-open, handle: %" PRId64, handle); |
39097daf | 449 | return handle; |
e3d4d252 MR |
450 | } |
451 | ||
77dbc81b | 452 | void qmp_guest_file_close(int64_t handle, Error **errp) |
e3d4d252 | 453 | { |
77dbc81b | 454 | GuestFileHandle *gfh = guest_file_handle_find(handle, errp); |
e3d4d252 MR |
455 | int ret; |
456 | ||
d607a523 | 457 | slog("guest-file-close called, handle: %" PRId64, handle); |
e3d4d252 | 458 | if (!gfh) { |
e3d4d252 MR |
459 | return; |
460 | } | |
461 | ||
462 | ret = fclose(gfh->fh); | |
3ac4b7c5 | 463 | if (ret == EOF) { |
77dbc81b | 464 | error_setg_errno(errp, errno, "failed to close handle"); |
e3d4d252 MR |
465 | return; |
466 | } | |
467 | ||
468 | QTAILQ_REMOVE(&guest_file_state.filehandles, gfh, next); | |
7267c094 | 469 | g_free(gfh); |
e3d4d252 MR |
470 | } |
471 | ||
ead83a13 PMD |
472 | GuestFileRead *guest_file_read_unsafe(GuestFileHandle *gfh, |
473 | int64_t count, Error **errp) | |
e3d4d252 | 474 | { |
e3d4d252 MR |
475 | GuestFileRead *read_data = NULL; |
476 | guchar *buf; | |
ead83a13 | 477 | FILE *fh = gfh->fh; |
e3d4d252 MR |
478 | size_t read_count; |
479 | ||
895b00f6 MAL |
480 | /* explicitly flush when switching from writing to reading */ |
481 | if (gfh->state == RW_STATE_WRITING) { | |
482 | int ret = fflush(fh); | |
483 | if (ret == EOF) { | |
484 | error_setg_errno(errp, errno, "failed to flush file"); | |
485 | return NULL; | |
486 | } | |
487 | gfh->state = RW_STATE_NEW; | |
488 | } | |
489 | ||
0697e9ed | 490 | buf = g_malloc0(count + 1); |
e3d4d252 MR |
491 | read_count = fread(buf, 1, count, fh); |
492 | if (ferror(fh)) { | |
77dbc81b | 493 | error_setg_errno(errp, errno, "failed to read file"); |
e3d4d252 MR |
494 | } else { |
495 | buf[read_count] = 0; | |
f3a06403 | 496 | read_data = g_new0(GuestFileRead, 1); |
e3d4d252 MR |
497 | read_data->count = read_count; |
498 | read_data->eof = feof(fh); | |
499 | if (read_count) { | |
500 | read_data->buf_b64 = g_base64_encode(buf, read_count); | |
501 | } | |
895b00f6 | 502 | gfh->state = RW_STATE_READING; |
e3d4d252 | 503 | } |
7267c094 | 504 | g_free(buf); |
e3d4d252 MR |
505 | clearerr(fh); |
506 | ||
507 | return read_data; | |
508 | } | |
509 | ||
510 | GuestFileWrite *qmp_guest_file_write(int64_t handle, const char *buf_b64, | |
77dbc81b MA |
511 | bool has_count, int64_t count, |
512 | Error **errp) | |
e3d4d252 MR |
513 | { |
514 | GuestFileWrite *write_data = NULL; | |
515 | guchar *buf; | |
516 | gsize buf_len; | |
517 | int write_count; | |
77dbc81b | 518 | GuestFileHandle *gfh = guest_file_handle_find(handle, errp); |
e3d4d252 MR |
519 | FILE *fh; |
520 | ||
521 | if (!gfh) { | |
e3d4d252 MR |
522 | return NULL; |
523 | } | |
524 | ||
525 | fh = gfh->fh; | |
895b00f6 MAL |
526 | |
527 | if (gfh->state == RW_STATE_READING) { | |
528 | int ret = fseek(fh, 0, SEEK_CUR); | |
529 | if (ret == -1) { | |
530 | error_setg_errno(errp, errno, "failed to seek file"); | |
531 | return NULL; | |
532 | } | |
533 | gfh->state = RW_STATE_NEW; | |
534 | } | |
535 | ||
920639ca DB |
536 | buf = qbase64_decode(buf_b64, -1, &buf_len, errp); |
537 | if (!buf) { | |
538 | return NULL; | |
539 | } | |
e3d4d252 MR |
540 | |
541 | if (!has_count) { | |
542 | count = buf_len; | |
543 | } else if (count < 0 || count > buf_len) { | |
77dbc81b | 544 | error_setg(errp, "value '%" PRId64 "' is invalid for argument count", |
db3edb66 | 545 | count); |
7267c094 | 546 | g_free(buf); |
e3d4d252 MR |
547 | return NULL; |
548 | } | |
549 | ||
550 | write_count = fwrite(buf, 1, count, fh); | |
551 | if (ferror(fh)) { | |
77dbc81b | 552 | error_setg_errno(errp, errno, "failed to write to file"); |
d607a523 | 553 | slog("guest-file-write failed, handle: %" PRId64, handle); |
e3d4d252 | 554 | } else { |
f3a06403 | 555 | write_data = g_new0(GuestFileWrite, 1); |
e3d4d252 MR |
556 | write_data->count = write_count; |
557 | write_data->eof = feof(fh); | |
895b00f6 | 558 | gfh->state = RW_STATE_WRITING; |
e3d4d252 | 559 | } |
7267c094 | 560 | g_free(buf); |
e3d4d252 MR |
561 | clearerr(fh); |
562 | ||
563 | return write_data; | |
564 | } | |
565 | ||
566 | struct GuestFileSeek *qmp_guest_file_seek(int64_t handle, int64_t offset, | |
0b4b4938 EB |
567 | GuestFileWhence *whence_code, |
568 | Error **errp) | |
e3d4d252 | 569 | { |
77dbc81b | 570 | GuestFileHandle *gfh = guest_file_handle_find(handle, errp); |
e3d4d252 MR |
571 | GuestFileSeek *seek_data = NULL; |
572 | FILE *fh; | |
573 | int ret; | |
0a982b1b | 574 | int whence; |
0b4b4938 | 575 | Error *err = NULL; |
e3d4d252 MR |
576 | |
577 | if (!gfh) { | |
e3d4d252 MR |
578 | return NULL; |
579 | } | |
580 | ||
0a982b1b | 581 | /* We stupidly exposed 'whence':'int' in our qapi */ |
0b4b4938 EB |
582 | whence = ga_parse_whence(whence_code, &err); |
583 | if (err) { | |
584 | error_propagate(errp, err); | |
0a982b1b EB |
585 | return NULL; |
586 | } | |
587 | ||
e3d4d252 MR |
588 | fh = gfh->fh; |
589 | ret = fseek(fh, offset, whence); | |
590 | if (ret == -1) { | |
77dbc81b | 591 | error_setg_errno(errp, errno, "failed to seek file"); |
895b00f6 MAL |
592 | if (errno == ESPIPE) { |
593 | /* file is non-seekable, stdio shouldn't be buffering anyways */ | |
594 | gfh->state = RW_STATE_NEW; | |
595 | } | |
e3d4d252 | 596 | } else { |
10b7c5dd | 597 | seek_data = g_new0(GuestFileSeek, 1); |
e3d4d252 MR |
598 | seek_data->position = ftell(fh); |
599 | seek_data->eof = feof(fh); | |
895b00f6 | 600 | gfh->state = RW_STATE_NEW; |
e3d4d252 MR |
601 | } |
602 | clearerr(fh); | |
603 | ||
604 | return seek_data; | |
605 | } | |
606 | ||
77dbc81b | 607 | void qmp_guest_file_flush(int64_t handle, Error **errp) |
e3d4d252 | 608 | { |
77dbc81b | 609 | GuestFileHandle *gfh = guest_file_handle_find(handle, errp); |
e3d4d252 MR |
610 | FILE *fh; |
611 | int ret; | |
612 | ||
613 | if (!gfh) { | |
e3d4d252 MR |
614 | return; |
615 | } | |
616 | ||
617 | fh = gfh->fh; | |
618 | ret = fflush(fh); | |
619 | if (ret == EOF) { | |
77dbc81b | 620 | error_setg_errno(errp, errno, "failed to flush file"); |
895b00f6 MAL |
621 | } else { |
622 | gfh->state = RW_STATE_NEW; | |
e3d4d252 MR |
623 | } |
624 | } | |
625 | ||
e72c3f2e MR |
626 | /* linux-specific implementations. avoid this if at all possible. */ |
627 | #if defined(__linux__) | |
628 | ||
eab5fd59 | 629 | #if defined(CONFIG_FSFREEZE) || defined(CONFIG_FSTRIM) |
518b0d80 | 630 | void free_fs_mount_list(FsMountList *mounts) |
9e8aded4 | 631 | { |
af02203f | 632 | FsMount *mount, *temp; |
9e8aded4 MR |
633 | |
634 | if (!mounts) { | |
635 | return; | |
636 | } | |
637 | ||
638 | QTAILQ_FOREACH_SAFE(mount, mounts, next, temp) { | |
639 | QTAILQ_REMOVE(mounts, mount, next); | |
640 | g_free(mount->dirname); | |
641 | g_free(mount->devtype); | |
642 | g_free(mount); | |
643 | } | |
644 | } | |
eab5fd59 PB |
645 | #endif |
646 | ||
647 | #if defined(CONFIG_FSFREEZE) | |
e3d4d252 | 648 | |
46d4c572 TS |
649 | static char *get_pci_driver(char const *syspath, int pathlen, Error **errp) |
650 | { | |
651 | char *path; | |
652 | char *dpath; | |
653 | char *driver = NULL; | |
654 | char buf[PATH_MAX]; | |
655 | ssize_t len; | |
656 | ||
657 | path = g_strndup(syspath, pathlen); | |
658 | dpath = g_strdup_printf("%s/driver", path); | |
659 | len = readlink(dpath, buf, sizeof(buf) - 1); | |
660 | if (len != -1) { | |
661 | buf[len] = 0; | |
3e015d81 | 662 | driver = g_path_get_basename(buf); |
46d4c572 TS |
663 | } |
664 | g_free(dpath); | |
665 | g_free(path); | |
666 | return driver; | |
667 | } | |
668 | ||
669 | static int compare_uint(const void *_a, const void *_b) | |
670 | { | |
671 | unsigned int a = *(unsigned int *)_a; | |
672 | unsigned int b = *(unsigned int *)_b; | |
673 | ||
674 | return a < b ? -1 : a > b ? 1 : 0; | |
675 | } | |
676 | ||
677 | /* Walk the specified sysfs and build a sorted list of host or ata numbers */ | |
678 | static int build_hosts(char const *syspath, char const *host, bool ata, | |
679 | unsigned int *hosts, int hosts_max, Error **errp) | |
680 | { | |
681 | char *path; | |
682 | DIR *dir; | |
683 | struct dirent *entry; | |
684 | int i = 0; | |
685 | ||
686 | path = g_strndup(syspath, host - syspath); | |
687 | dir = opendir(path); | |
688 | if (!dir) { | |
689 | error_setg_errno(errp, errno, "opendir(\"%s\")", path); | |
690 | g_free(path); | |
691 | return -1; | |
692 | } | |
693 | ||
694 | while (i < hosts_max) { | |
695 | entry = readdir(dir); | |
696 | if (!entry) { | |
697 | break; | |
698 | } | |
699 | if (ata && sscanf(entry->d_name, "ata%d", hosts + i) == 1) { | |
700 | ++i; | |
701 | } else if (!ata && sscanf(entry->d_name, "host%d", hosts + i) == 1) { | |
702 | ++i; | |
703 | } | |
704 | } | |
705 | ||
706 | qsort(hosts, i, sizeof(hosts[0]), compare_uint); | |
707 | ||
708 | g_free(path); | |
709 | closedir(dir); | |
710 | return i; | |
711 | } | |
712 | ||
d9fe4f0f TH |
713 | /* |
714 | * Store disk device info for devices on the PCI bus. | |
715 | * Returns true if information has been stored, or false for failure. | |
716 | */ | |
717 | static bool build_guest_fsinfo_for_pci_dev(char const *syspath, | |
718 | GuestDiskAddress *disk, | |
719 | Error **errp) | |
46d4c572 TS |
720 | { |
721 | unsigned int pci[4], host, hosts[8], tgt[3]; | |
722 | int i, nhosts = 0, pcilen; | |
d9fe4f0f | 723 | GuestPCIAddress *pciaddr = disk->pci_controller; |
46d4c572 TS |
724 | bool has_ata = false, has_host = false, has_tgt = false; |
725 | char *p, *q, *driver = NULL; | |
d9fe4f0f | 726 | bool ret = false; |
46d4c572 TS |
727 | |
728 | p = strstr(syspath, "/devices/pci"); | |
729 | if (!p || sscanf(p + 12, "%*x:%*x/%x:%x:%x.%x%n", | |
730 | pci, pci + 1, pci + 2, pci + 3, &pcilen) < 4) { | |
743c71d0 | 731 | g_debug("only pci device is supported: sysfs path '%s'", syspath); |
d9fe4f0f | 732 | return false; |
46d4c572 TS |
733 | } |
734 | ||
743c71d0 MAL |
735 | p += 12 + pcilen; |
736 | while (true) { | |
737 | driver = get_pci_driver(syspath, p - syspath, errp); | |
738 | if (driver && (g_str_equal(driver, "ata_piix") || | |
739 | g_str_equal(driver, "sym53c8xx") || | |
740 | g_str_equal(driver, "virtio-pci") || | |
d48f61c8 ZP |
741 | g_str_equal(driver, "ahci") || |
742 | g_str_equal(driver, "nvme"))) { | |
743c71d0 MAL |
743 | break; |
744 | } | |
745 | ||
bb23a736 | 746 | g_free(driver); |
743c71d0 MAL |
747 | if (sscanf(p, "/%x:%x:%x.%x%n", |
748 | pci, pci + 1, pci + 2, pci + 3, &pcilen) == 4) { | |
749 | p += pcilen; | |
750 | continue; | |
751 | } | |
752 | ||
753 | g_debug("unsupported driver or sysfs path '%s'", syspath); | |
d9fe4f0f | 754 | return false; |
46d4c572 TS |
755 | } |
756 | ||
757 | p = strstr(syspath, "/target"); | |
758 | if (p && sscanf(p + 7, "%*u:%*u:%*u/%*u:%u:%u:%u", | |
759 | tgt, tgt + 1, tgt + 2) == 3) { | |
760 | has_tgt = true; | |
761 | } | |
762 | ||
763 | p = strstr(syspath, "/ata"); | |
764 | if (p) { | |
765 | q = p + 4; | |
766 | has_ata = true; | |
767 | } else { | |
768 | p = strstr(syspath, "/host"); | |
769 | q = p + 5; | |
770 | } | |
771 | if (p && sscanf(q, "%u", &host) == 1) { | |
772 | has_host = true; | |
773 | nhosts = build_hosts(syspath, p, has_ata, hosts, | |
01a6df1b | 774 | ARRAY_SIZE(hosts), errp); |
46d4c572 TS |
775 | if (nhosts < 0) { |
776 | goto cleanup; | |
777 | } | |
778 | } | |
779 | ||
46d4c572 TS |
780 | pciaddr->domain = pci[0]; |
781 | pciaddr->bus = pci[1]; | |
782 | pciaddr->slot = pci[2]; | |
783 | pciaddr->function = pci[3]; | |
784 | ||
46d4c572 TS |
785 | if (strcmp(driver, "ata_piix") == 0) { |
786 | /* a host per ide bus, target*:0:<unit>:0 */ | |
787 | if (!has_host || !has_tgt) { | |
788 | g_debug("invalid sysfs path '%s' (driver '%s')", syspath, driver); | |
789 | goto cleanup; | |
790 | } | |
791 | for (i = 0; i < nhosts; i++) { | |
792 | if (host == hosts[i]) { | |
793 | disk->bus_type = GUEST_DISK_BUS_TYPE_IDE; | |
794 | disk->bus = i; | |
795 | disk->unit = tgt[1]; | |
796 | break; | |
797 | } | |
798 | } | |
799 | if (i >= nhosts) { | |
800 | g_debug("no host for '%s' (driver '%s')", syspath, driver); | |
801 | goto cleanup; | |
802 | } | |
803 | } else if (strcmp(driver, "sym53c8xx") == 0) { | |
804 | /* scsi(LSI Logic): target*:0:<unit>:0 */ | |
805 | if (!has_tgt) { | |
806 | g_debug("invalid sysfs path '%s' (driver '%s')", syspath, driver); | |
807 | goto cleanup; | |
808 | } | |
809 | disk->bus_type = GUEST_DISK_BUS_TYPE_SCSI; | |
810 | disk->unit = tgt[1]; | |
811 | } else if (strcmp(driver, "virtio-pci") == 0) { | |
812 | if (has_tgt) { | |
813 | /* virtio-scsi: target*:0:0:<unit> */ | |
814 | disk->bus_type = GUEST_DISK_BUS_TYPE_SCSI; | |
815 | disk->unit = tgt[2]; | |
816 | } else { | |
817 | /* virtio-blk: 1 disk per 1 device */ | |
818 | disk->bus_type = GUEST_DISK_BUS_TYPE_VIRTIO; | |
819 | } | |
820 | } else if (strcmp(driver, "ahci") == 0) { | |
821 | /* ahci: 1 host per 1 unit */ | |
822 | if (!has_host || !has_tgt) { | |
823 | g_debug("invalid sysfs path '%s' (driver '%s')", syspath, driver); | |
824 | goto cleanup; | |
825 | } | |
826 | for (i = 0; i < nhosts; i++) { | |
827 | if (host == hosts[i]) { | |
828 | disk->unit = i; | |
829 | disk->bus_type = GUEST_DISK_BUS_TYPE_SATA; | |
830 | break; | |
831 | } | |
832 | } | |
833 | if (i >= nhosts) { | |
834 | g_debug("no host for '%s' (driver '%s')", syspath, driver); | |
835 | goto cleanup; | |
836 | } | |
d48f61c8 ZP |
837 | } else if (strcmp(driver, "nvme") == 0) { |
838 | disk->bus_type = GUEST_DISK_BUS_TYPE_NVME; | |
46d4c572 TS |
839 | } else { |
840 | g_debug("unknown driver '%s' (sysfs path '%s')", driver, syspath); | |
841 | goto cleanup; | |
842 | } | |
843 | ||
d9fe4f0f | 844 | ret = true; |
46d4c572 TS |
845 | |
846 | cleanup: | |
46d4c572 | 847 | g_free(driver); |
d9fe4f0f TH |
848 | return ret; |
849 | } | |
850 | ||
23843c12 TH |
851 | /* |
852 | * Store disk device info for non-PCI virtio devices (for example s390x | |
853 | * channel I/O devices). Returns true if information has been stored, or | |
854 | * false for failure. | |
855 | */ | |
856 | static bool build_guest_fsinfo_for_nonpci_virtio(char const *syspath, | |
857 | GuestDiskAddress *disk, | |
858 | Error **errp) | |
859 | { | |
860 | unsigned int tgt[3]; | |
861 | char *p; | |
862 | ||
863 | if (!strstr(syspath, "/virtio") || !strstr(syspath, "/block")) { | |
864 | g_debug("Unsupported virtio device '%s'", syspath); | |
865 | return false; | |
866 | } | |
867 | ||
868 | p = strstr(syspath, "/target"); | |
869 | if (p && sscanf(p + 7, "%*u:%*u:%*u/%*u:%u:%u:%u", | |
870 | &tgt[0], &tgt[1], &tgt[2]) == 3) { | |
871 | /* virtio-scsi: target*:0:<target>:<unit> */ | |
872 | disk->bus_type = GUEST_DISK_BUS_TYPE_SCSI; | |
873 | disk->bus = tgt[0]; | |
874 | disk->target = tgt[1]; | |
875 | disk->unit = tgt[2]; | |
876 | } else { | |
877 | /* virtio-blk: 1 disk per 1 device */ | |
878 | disk->bus_type = GUEST_DISK_BUS_TYPE_VIRTIO; | |
879 | } | |
880 | ||
881 | return true; | |
882 | } | |
883 | ||
5b723a5d TH |
884 | /* |
885 | * Store disk device info for CCW devices (s390x channel I/O devices). | |
886 | * Returns true if information has been stored, or false for failure. | |
887 | */ | |
888 | static bool build_guest_fsinfo_for_ccw_dev(char const *syspath, | |
889 | GuestDiskAddress *disk, | |
890 | Error **errp) | |
891 | { | |
892 | unsigned int cssid, ssid, subchno, devno; | |
893 | char *p; | |
894 | ||
895 | p = strstr(syspath, "/devices/css"); | |
896 | if (!p || sscanf(p + 12, "%*x/%x.%x.%x/%*x.%*x.%x/", | |
897 | &cssid, &ssid, &subchno, &devno) < 4) { | |
898 | g_debug("could not parse ccw device sysfs path: %s", syspath); | |
899 | return false; | |
900 | } | |
901 | ||
902 | disk->has_ccw_address = true; | |
903 | disk->ccw_address = g_new0(GuestCCWAddress, 1); | |
904 | disk->ccw_address->cssid = cssid; | |
905 | disk->ccw_address->ssid = ssid; | |
906 | disk->ccw_address->subchno = subchno; | |
907 | disk->ccw_address->devno = devno; | |
908 | ||
909 | if (strstr(p, "/virtio")) { | |
910 | build_guest_fsinfo_for_nonpci_virtio(syspath, disk, errp); | |
911 | } | |
912 | ||
913 | return true; | |
914 | } | |
915 | ||
d9fe4f0f TH |
916 | /* Store disk device info specified by @sysfs into @fs */ |
917 | static void build_guest_fsinfo_for_real_device(char const *syspath, | |
918 | GuestFilesystemInfo *fs, | |
919 | Error **errp) | |
920 | { | |
921 | GuestDiskAddress *disk; | |
922 | GuestPCIAddress *pciaddr; | |
d9fe4f0f | 923 | bool has_hwinf; |
43dadc43 TH |
924 | #ifdef CONFIG_LIBUDEV |
925 | struct udev *udev = NULL; | |
926 | struct udev_device *udevice = NULL; | |
927 | #endif | |
d9fe4f0f TH |
928 | |
929 | pciaddr = g_new0(GuestPCIAddress, 1); | |
43dadc43 TH |
930 | pciaddr->domain = -1; /* -1 means field is invalid */ |
931 | pciaddr->bus = -1; | |
932 | pciaddr->slot = -1; | |
933 | pciaddr->function = -1; | |
d9fe4f0f TH |
934 | |
935 | disk = g_new0(GuestDiskAddress, 1); | |
936 | disk->pci_controller = pciaddr; | |
43dadc43 | 937 | disk->bus_type = GUEST_DISK_BUS_TYPE_UNKNOWN; |
d9fe4f0f | 938 | |
43dadc43 TH |
939 | #ifdef CONFIG_LIBUDEV |
940 | udev = udev_new(); | |
941 | udevice = udev_device_new_from_syspath(udev, syspath); | |
942 | if (udev == NULL || udevice == NULL) { | |
943 | g_debug("failed to query udev"); | |
944 | } else { | |
945 | const char *devnode, *serial; | |
946 | devnode = udev_device_get_devnode(udevice); | |
947 | if (devnode != NULL) { | |
948 | disk->dev = g_strdup(devnode); | |
949 | disk->has_dev = true; | |
950 | } | |
951 | serial = udev_device_get_property_value(udevice, "ID_SERIAL"); | |
952 | if (serial != NULL && *serial != 0) { | |
953 | disk->serial = g_strdup(serial); | |
954 | disk->has_serial = true; | |
955 | } | |
956 | } | |
957 | ||
958 | udev_unref(udev); | |
959 | udev_device_unref(udevice); | |
960 | #endif | |
961 | ||
23843c12 TH |
962 | if (strstr(syspath, "/devices/pci")) { |
963 | has_hwinf = build_guest_fsinfo_for_pci_dev(syspath, disk, errp); | |
5b723a5d TH |
964 | } else if (strstr(syspath, "/devices/css")) { |
965 | has_hwinf = build_guest_fsinfo_for_ccw_dev(syspath, disk, errp); | |
23843c12 TH |
966 | } else if (strstr(syspath, "/virtio")) { |
967 | has_hwinf = build_guest_fsinfo_for_nonpci_virtio(syspath, disk, errp); | |
968 | } else { | |
969 | g_debug("Unsupported device type for '%s'", syspath); | |
970 | has_hwinf = false; | |
971 | } | |
d9fe4f0f | 972 | |
43dadc43 | 973 | if (has_hwinf || disk->has_dev || disk->has_serial) { |
54aa3de7 | 974 | QAPI_LIST_PREPEND(fs->disk, disk); |
d9fe4f0f | 975 | } else { |
54aa3de7 | 976 | qapi_free_GuestDiskAddress(disk); |
d9fe4f0f | 977 | } |
46d4c572 TS |
978 | } |
979 | ||
980 | static void build_guest_fsinfo_for_device(char const *devpath, | |
981 | GuestFilesystemInfo *fs, | |
982 | Error **errp); | |
983 | ||
984 | /* Store a list of slave devices of virtual volume specified by @syspath into | |
985 | * @fs */ | |
986 | static void build_guest_fsinfo_for_virtual_device(char const *syspath, | |
987 | GuestFilesystemInfo *fs, | |
988 | Error **errp) | |
989 | { | |
292743d9 | 990 | Error *err = NULL; |
46d4c572 TS |
991 | DIR *dir; |
992 | char *dirpath; | |
e668d1b8 | 993 | struct dirent *entry; |
46d4c572 TS |
994 | |
995 | dirpath = g_strdup_printf("%s/slaves", syspath); | |
996 | dir = opendir(dirpath); | |
997 | if (!dir) { | |
8251a72f MR |
998 | if (errno != ENOENT) { |
999 | error_setg_errno(errp, errno, "opendir(\"%s\")", dirpath); | |
1000 | } | |
46d4c572 TS |
1001 | g_free(dirpath); |
1002 | return; | |
1003 | } | |
46d4c572 TS |
1004 | |
1005 | for (;;) { | |
e668d1b8 HZ |
1006 | errno = 0; |
1007 | entry = readdir(dir); | |
1008 | if (entry == NULL) { | |
1009 | if (errno) { | |
1010 | error_setg_errno(errp, errno, "readdir(\"%s\")", dirpath); | |
1011 | } | |
46d4c572 TS |
1012 | break; |
1013 | } | |
1014 | ||
e668d1b8 HZ |
1015 | if (entry->d_type == DT_LNK) { |
1016 | char *path; | |
1017 | ||
1018 | g_debug(" slave device '%s'", entry->d_name); | |
1019 | path = g_strdup_printf("%s/slaves/%s", syspath, entry->d_name); | |
292743d9 | 1020 | build_guest_fsinfo_for_device(path, fs, &err); |
e668d1b8 | 1021 | g_free(path); |
46d4c572 | 1022 | |
292743d9 MA |
1023 | if (err) { |
1024 | error_propagate(errp, err); | |
46d4c572 TS |
1025 | break; |
1026 | } | |
1027 | } | |
1028 | } | |
1029 | ||
e668d1b8 | 1030 | g_free(dirpath); |
46d4c572 TS |
1031 | closedir(dir); |
1032 | } | |
1033 | ||
fed39564 TG |
1034 | static bool is_disk_virtual(const char *devpath, Error **errp) |
1035 | { | |
1036 | g_autofree char *syspath = realpath(devpath, NULL); | |
1037 | ||
1038 | if (!syspath) { | |
1039 | error_setg_errno(errp, errno, "realpath(\"%s\")", devpath); | |
1040 | return false; | |
1041 | } | |
1042 | return strstr(syspath, "/devices/virtual/block/") != NULL; | |
1043 | } | |
1044 | ||
46d4c572 TS |
1045 | /* Dispatch to functions for virtual/real device */ |
1046 | static void build_guest_fsinfo_for_device(char const *devpath, | |
1047 | GuestFilesystemInfo *fs, | |
1048 | Error **errp) | |
1049 | { | |
fed39564 TG |
1050 | ERRP_GUARD(); |
1051 | g_autofree char *syspath = NULL; | |
1052 | bool is_virtual = false; | |
46d4c572 | 1053 | |
fed39564 | 1054 | syspath = realpath(devpath, NULL); |
46d4c572 | 1055 | if (!syspath) { |
bbb0151c JS |
1056 | if (errno != ENOENT) { |
1057 | error_setg_errno(errp, errno, "realpath(\"%s\")", devpath); | |
1058 | return; | |
1059 | } | |
1060 | ||
1061 | /* ENOENT: This devpath may not exist because of container config */ | |
1062 | if (!fs->name) { | |
1063 | fs->name = g_path_get_basename(devpath); | |
1064 | } | |
46d4c572 TS |
1065 | return; |
1066 | } | |
1067 | ||
1068 | if (!fs->name) { | |
3e015d81 | 1069 | fs->name = g_path_get_basename(syspath); |
46d4c572 TS |
1070 | } |
1071 | ||
1072 | g_debug(" parse sysfs path '%s'", syspath); | |
fed39564 TG |
1073 | is_virtual = is_disk_virtual(syspath, errp); |
1074 | if (*errp != NULL) { | |
1075 | return; | |
1076 | } | |
1077 | if (is_virtual) { | |
46d4c572 TS |
1078 | build_guest_fsinfo_for_virtual_device(syspath, fs, errp); |
1079 | } else { | |
1080 | build_guest_fsinfo_for_real_device(syspath, fs, errp); | |
1081 | } | |
fed39564 TG |
1082 | } |
1083 | ||
1084 | #ifdef CONFIG_LIBUDEV | |
1085 | ||
1086 | /* | |
1087 | * Wrapper around build_guest_fsinfo_for_device() for getting just | |
1088 | * the disk address. | |
1089 | */ | |
1090 | static GuestDiskAddress *get_disk_address(const char *syspath, Error **errp) | |
1091 | { | |
1092 | g_autoptr(GuestFilesystemInfo) fs = NULL; | |
46d4c572 | 1093 | |
fed39564 TG |
1094 | fs = g_new0(GuestFilesystemInfo, 1); |
1095 | build_guest_fsinfo_for_device(syspath, fs, errp); | |
1096 | if (fs->disk != NULL) { | |
1097 | return g_steal_pointer(&fs->disk->value); | |
1098 | } | |
1099 | return NULL; | |
46d4c572 TS |
1100 | } |
1101 | ||
fed39564 TG |
1102 | static char *get_alias_for_syspath(const char *syspath) |
1103 | { | |
1104 | struct udev *udev = NULL; | |
1105 | struct udev_device *udevice = NULL; | |
1106 | char *ret = NULL; | |
1107 | ||
1108 | udev = udev_new(); | |
1109 | if (udev == NULL) { | |
1110 | g_debug("failed to query udev"); | |
1111 | goto out; | |
1112 | } | |
1113 | udevice = udev_device_new_from_syspath(udev, syspath); | |
1114 | if (udevice == NULL) { | |
1115 | g_debug("failed to query udev for path: %s", syspath); | |
1116 | goto out; | |
1117 | } else { | |
1118 | const char *alias = udev_device_get_property_value( | |
1119 | udevice, "DM_NAME"); | |
1120 | /* | |
1121 | * NULL means there was an error and empty string means there is no | |
1122 | * alias. In case of no alias we return NULL instead of empty string. | |
1123 | */ | |
1124 | if (alias == NULL) { | |
1125 | g_debug("failed to query udev for device alias for: %s", | |
1126 | syspath); | |
1127 | } else if (*alias != 0) { | |
1128 | ret = g_strdup(alias); | |
1129 | } | |
1130 | } | |
1131 | ||
1132 | out: | |
1133 | udev_unref(udev); | |
1134 | udev_device_unref(udevice); | |
1135 | return ret; | |
1136 | } | |
1137 | ||
1138 | static char *get_device_for_syspath(const char *syspath) | |
1139 | { | |
1140 | struct udev *udev = NULL; | |
1141 | struct udev_device *udevice = NULL; | |
1142 | char *ret = NULL; | |
1143 | ||
1144 | udev = udev_new(); | |
1145 | if (udev == NULL) { | |
1146 | g_debug("failed to query udev"); | |
1147 | goto out; | |
1148 | } | |
1149 | udevice = udev_device_new_from_syspath(udev, syspath); | |
1150 | if (udevice == NULL) { | |
1151 | g_debug("failed to query udev for path: %s", syspath); | |
1152 | goto out; | |
1153 | } else { | |
1154 | ret = g_strdup(udev_device_get_devnode(udevice)); | |
1155 | } | |
1156 | ||
1157 | out: | |
1158 | udev_unref(udev); | |
1159 | udev_device_unref(udevice); | |
1160 | return ret; | |
1161 | } | |
1162 | ||
1163 | static void get_disk_deps(const char *disk_dir, GuestDiskInfo *disk) | |
1164 | { | |
1165 | g_autofree char *deps_dir = NULL; | |
1166 | const gchar *dep; | |
1167 | GDir *dp_deps = NULL; | |
1168 | ||
1169 | /* List dependent disks */ | |
1170 | deps_dir = g_strdup_printf("%s/slaves", disk_dir); | |
1171 | g_debug(" listing entries in: %s", deps_dir); | |
1172 | dp_deps = g_dir_open(deps_dir, 0, NULL); | |
1173 | if (dp_deps == NULL) { | |
1174 | g_debug("failed to list entries in %s", deps_dir); | |
1175 | return; | |
1176 | } | |
a8aa94b5 | 1177 | disk->has_dependencies = true; |
fed39564 TG |
1178 | while ((dep = g_dir_read_name(dp_deps)) != NULL) { |
1179 | g_autofree char *dep_dir = NULL; | |
fed39564 TG |
1180 | char *dev_name; |
1181 | ||
1182 | /* Add dependent disks */ | |
1183 | dep_dir = g_strdup_printf("%s/%s", deps_dir, dep); | |
1184 | dev_name = get_device_for_syspath(dep_dir); | |
1185 | if (dev_name != NULL) { | |
1186 | g_debug(" adding dependent device: %s", dev_name); | |
54aa3de7 | 1187 | QAPI_LIST_PREPEND(disk->dependencies, dev_name); |
fed39564 TG |
1188 | } |
1189 | } | |
1190 | g_dir_close(dp_deps); | |
1191 | } | |
1192 | ||
1193 | /* | |
1194 | * Detect partitions subdirectory, name is "<disk_name><number>" or | |
1195 | * "<disk_name>p<number>" | |
1196 | * | |
1197 | * @disk_name -- last component of /sys path (e.g. sda) | |
1198 | * @disk_dir -- sys path of the disk (e.g. /sys/block/sda) | |
1199 | * @disk_dev -- device node of the disk (e.g. /dev/sda) | |
1200 | */ | |
1201 | static GuestDiskInfoList *get_disk_partitions( | |
1202 | GuestDiskInfoList *list, | |
1203 | const char *disk_name, const char *disk_dir, | |
1204 | const char *disk_dev) | |
1205 | { | |
54aa3de7 | 1206 | GuestDiskInfoList *ret = list; |
fed39564 TG |
1207 | struct dirent *de_disk; |
1208 | DIR *dp_disk = NULL; | |
1209 | size_t len = strlen(disk_name); | |
1210 | ||
1211 | dp_disk = opendir(disk_dir); | |
1212 | while ((de_disk = readdir(dp_disk)) != NULL) { | |
1213 | g_autofree char *partition_dir = NULL; | |
1214 | char *dev_name; | |
1215 | GuestDiskInfo *partition; | |
1216 | ||
1217 | if (!(de_disk->d_type & DT_DIR)) { | |
1218 | continue; | |
1219 | } | |
1220 | ||
1221 | if (!(strncmp(disk_name, de_disk->d_name, len) == 0 && | |
1222 | ((*(de_disk->d_name + len) == 'p' && | |
1223 | isdigit(*(de_disk->d_name + len + 1))) || | |
1224 | isdigit(*(de_disk->d_name + len))))) { | |
1225 | continue; | |
1226 | } | |
1227 | ||
1228 | partition_dir = g_strdup_printf("%s/%s", | |
1229 | disk_dir, de_disk->d_name); | |
1230 | dev_name = get_device_for_syspath(partition_dir); | |
1231 | if (dev_name == NULL) { | |
1232 | g_debug("Failed to get device name for syspath: %s", | |
1233 | disk_dir); | |
1234 | continue; | |
1235 | } | |
1236 | partition = g_new0(GuestDiskInfo, 1); | |
1237 | partition->name = dev_name; | |
1238 | partition->partition = true; | |
bac9b87b | 1239 | partition->has_dependencies = true; |
fed39564 | 1240 | /* Add parent disk as dependent for easier tracking of hierarchy */ |
54aa3de7 | 1241 | QAPI_LIST_PREPEND(partition->dependencies, g_strdup(disk_dev)); |
fed39564 | 1242 | |
54aa3de7 | 1243 | QAPI_LIST_PREPEND(ret, partition); |
fed39564 TG |
1244 | } |
1245 | closedir(dp_disk); | |
1246 | ||
1247 | return ret; | |
1248 | } | |
1249 | ||
22668881 ZP |
1250 | static void get_nvme_smart(GuestDiskInfo *disk) |
1251 | { | |
1252 | int fd; | |
1253 | GuestNVMeSmart *smart; | |
1254 | NvmeSmartLog log = {0}; | |
1255 | struct nvme_admin_cmd cmd = { | |
1256 | .opcode = NVME_ADM_CMD_GET_LOG_PAGE, | |
1257 | .nsid = NVME_NSID_BROADCAST, | |
1258 | .addr = (uintptr_t)&log, | |
1259 | .data_len = sizeof(log), | |
1260 | .cdw10 = NVME_LOG_SMART_INFO | (1 << 15) /* RAE bit */ | |
1261 | | (((sizeof(log) >> 2) - 1) << 16) | |
1262 | }; | |
1263 | ||
b9947c9c | 1264 | fd = qga_open_cloexec(disk->name, O_RDONLY, 0); |
22668881 ZP |
1265 | if (fd == -1) { |
1266 | g_debug("Failed to open device: %s: %s", disk->name, g_strerror(errno)); | |
1267 | return; | |
1268 | } | |
1269 | ||
1270 | if (ioctl(fd, NVME_IOCTL_ADMIN_CMD, &cmd)) { | |
1271 | g_debug("Failed to get smart: %s: %s", disk->name, g_strerror(errno)); | |
1272 | close(fd); | |
1273 | return; | |
1274 | } | |
1275 | ||
1276 | disk->has_smart = true; | |
1277 | disk->smart = g_new0(GuestDiskSmart, 1); | |
1278 | disk->smart->type = GUEST_DISK_BUS_TYPE_NVME; | |
1279 | ||
1280 | smart = &disk->smart->u.nvme; | |
1281 | smart->critical_warning = log.critical_warning; | |
1282 | smart->temperature = lduw_le_p(&log.temperature); /* unaligned field */ | |
1283 | smart->available_spare = log.available_spare; | |
1284 | smart->available_spare_threshold = log.available_spare_threshold; | |
1285 | smart->percentage_used = log.percentage_used; | |
1286 | smart->data_units_read_lo = le64_to_cpu(log.data_units_read[0]); | |
1287 | smart->data_units_read_hi = le64_to_cpu(log.data_units_read[1]); | |
1288 | smart->data_units_written_lo = le64_to_cpu(log.data_units_written[0]); | |
1289 | smart->data_units_written_hi = le64_to_cpu(log.data_units_written[1]); | |
1290 | smart->host_read_commands_lo = le64_to_cpu(log.host_read_commands[0]); | |
1291 | smart->host_read_commands_hi = le64_to_cpu(log.host_read_commands[1]); | |
1292 | smart->host_write_commands_lo = le64_to_cpu(log.host_write_commands[0]); | |
1293 | smart->host_write_commands_hi = le64_to_cpu(log.host_write_commands[1]); | |
1294 | smart->controller_busy_time_lo = le64_to_cpu(log.controller_busy_time[0]); | |
1295 | smart->controller_busy_time_hi = le64_to_cpu(log.controller_busy_time[1]); | |
1296 | smart->power_cycles_lo = le64_to_cpu(log.power_cycles[0]); | |
1297 | smart->power_cycles_hi = le64_to_cpu(log.power_cycles[1]); | |
1298 | smart->power_on_hours_lo = le64_to_cpu(log.power_on_hours[0]); | |
1299 | smart->power_on_hours_hi = le64_to_cpu(log.power_on_hours[1]); | |
1300 | smart->unsafe_shutdowns_lo = le64_to_cpu(log.unsafe_shutdowns[0]); | |
1301 | smart->unsafe_shutdowns_hi = le64_to_cpu(log.unsafe_shutdowns[1]); | |
1302 | smart->media_errors_lo = le64_to_cpu(log.media_errors[0]); | |
1303 | smart->media_errors_hi = le64_to_cpu(log.media_errors[1]); | |
1304 | smart->number_of_error_log_entries_lo = | |
1305 | le64_to_cpu(log.number_of_error_log_entries[0]); | |
1306 | smart->number_of_error_log_entries_hi = | |
1307 | le64_to_cpu(log.number_of_error_log_entries[1]); | |
1308 | ||
1309 | close(fd); | |
1310 | } | |
1311 | ||
1312 | static void get_disk_smart(GuestDiskInfo *disk) | |
1313 | { | |
1314 | if (disk->has_address | |
1315 | && (disk->address->bus_type == GUEST_DISK_BUS_TYPE_NVME)) { | |
1316 | get_nvme_smart(disk); | |
1317 | } | |
1318 | } | |
1319 | ||
fed39564 TG |
1320 | GuestDiskInfoList *qmp_guest_get_disks(Error **errp) |
1321 | { | |
54aa3de7 | 1322 | GuestDiskInfoList *ret = NULL; |
fed39564 TG |
1323 | GuestDiskInfo *disk; |
1324 | DIR *dp = NULL; | |
1325 | struct dirent *de = NULL; | |
1326 | ||
1327 | g_debug("listing /sys/block directory"); | |
1328 | dp = opendir("/sys/block"); | |
1329 | if (dp == NULL) { | |
1330 | error_setg_errno(errp, errno, "Can't open directory \"/sys/block\""); | |
1331 | return NULL; | |
1332 | } | |
1333 | while ((de = readdir(dp)) != NULL) { | |
1334 | g_autofree char *disk_dir = NULL, *line = NULL, | |
1335 | *size_path = NULL; | |
1336 | char *dev_name; | |
1337 | Error *local_err = NULL; | |
1338 | if (de->d_type != DT_LNK) { | |
1339 | g_debug(" skipping entry: %s", de->d_name); | |
1340 | continue; | |
1341 | } | |
1342 | ||
1343 | /* Check size and skip zero-sized disks */ | |
1344 | g_debug(" checking disk size"); | |
1345 | size_path = g_strdup_printf("/sys/block/%s/size", de->d_name); | |
1346 | if (!g_file_get_contents(size_path, &line, NULL, NULL)) { | |
1347 | g_debug(" failed to read disk size"); | |
1348 | continue; | |
1349 | } | |
1350 | if (g_strcmp0(line, "0\n") == 0) { | |
1351 | g_debug(" skipping zero-sized disk"); | |
1352 | continue; | |
1353 | } | |
1354 | ||
1355 | g_debug(" adding %s", de->d_name); | |
1356 | disk_dir = g_strdup_printf("/sys/block/%s", de->d_name); | |
1357 | dev_name = get_device_for_syspath(disk_dir); | |
1358 | if (dev_name == NULL) { | |
1359 | g_debug("Failed to get device name for syspath: %s", | |
1360 | disk_dir); | |
1361 | continue; | |
1362 | } | |
1363 | disk = g_new0(GuestDiskInfo, 1); | |
1364 | disk->name = dev_name; | |
1365 | disk->partition = false; | |
1366 | disk->alias = get_alias_for_syspath(disk_dir); | |
1367 | disk->has_alias = (disk->alias != NULL); | |
54aa3de7 | 1368 | QAPI_LIST_PREPEND(ret, disk); |
fed39564 TG |
1369 | |
1370 | /* Get address for non-virtual devices */ | |
1371 | bool is_virtual = is_disk_virtual(disk_dir, &local_err); | |
1372 | if (local_err != NULL) { | |
1373 | g_debug(" failed to check disk path, ignoring error: %s", | |
1374 | error_get_pretty(local_err)); | |
1375 | error_free(local_err); | |
1376 | local_err = NULL; | |
1377 | /* Don't try to get the address */ | |
1378 | is_virtual = true; | |
1379 | } | |
1380 | if (!is_virtual) { | |
1381 | disk->address = get_disk_address(disk_dir, &local_err); | |
1382 | if (local_err != NULL) { | |
1383 | g_debug(" failed to get device info, ignoring error: %s", | |
1384 | error_get_pretty(local_err)); | |
1385 | error_free(local_err); | |
1386 | local_err = NULL; | |
1387 | } else if (disk->address != NULL) { | |
1388 | disk->has_address = true; | |
1389 | } | |
1390 | } | |
1391 | ||
1392 | get_disk_deps(disk_dir, disk); | |
22668881 | 1393 | get_disk_smart(disk); |
fed39564 TG |
1394 | ret = get_disk_partitions(ret, de->d_name, disk_dir, dev_name); |
1395 | } | |
b1b9ab1c MR |
1396 | |
1397 | closedir(dp); | |
1398 | ||
fed39564 TG |
1399 | return ret; |
1400 | } | |
1401 | ||
1402 | #else | |
1403 | ||
1404 | GuestDiskInfoList *qmp_guest_get_disks(Error **errp) | |
1405 | { | |
1406 | error_setg(errp, QERR_UNSUPPORTED); | |
1407 | return NULL; | |
1408 | } | |
1409 | ||
1410 | #endif | |
1411 | ||
46d4c572 TS |
1412 | /* Return a list of the disk device(s)' info which @mount lies on */ |
1413 | static GuestFilesystemInfo *build_guest_fsinfo(struct FsMount *mount, | |
1414 | Error **errp) | |
1415 | { | |
1416 | GuestFilesystemInfo *fs = g_malloc0(sizeof(*fs)); | |
25b5ff1a CH |
1417 | struct statvfs buf; |
1418 | unsigned long used, nonroot_total, fr_size; | |
46d4c572 TS |
1419 | char *devpath = g_strdup_printf("/sys/dev/block/%u:%u", |
1420 | mount->devmajor, mount->devminor); | |
1421 | ||
1422 | fs->mountpoint = g_strdup(mount->dirname); | |
1423 | fs->type = g_strdup(mount->devtype); | |
1424 | build_guest_fsinfo_for_device(devpath, fs, errp); | |
1425 | ||
25b5ff1a CH |
1426 | if (statvfs(fs->mountpoint, &buf) == 0) { |
1427 | fr_size = buf.f_frsize; | |
1428 | used = buf.f_blocks - buf.f_bfree; | |
1429 | nonroot_total = used + buf.f_bavail; | |
1430 | fs->used_bytes = used * fr_size; | |
1431 | fs->total_bytes = nonroot_total * fr_size; | |
1432 | ||
1433 | fs->has_total_bytes = true; | |
1434 | fs->has_used_bytes = true; | |
1435 | } | |
1436 | ||
46d4c572 | 1437 | g_free(devpath); |
25b5ff1a | 1438 | |
46d4c572 TS |
1439 | return fs; |
1440 | } | |
1441 | ||
1442 | GuestFilesystemInfoList *qmp_guest_get_fsinfo(Error **errp) | |
1443 | { | |
1444 | FsMountList mounts; | |
1445 | struct FsMount *mount; | |
54aa3de7 | 1446 | GuestFilesystemInfoList *ret = NULL; |
46d4c572 TS |
1447 | Error *local_err = NULL; |
1448 | ||
1449 | QTAILQ_INIT(&mounts); | |
561bfcb6 | 1450 | if (!build_fs_mount_list(&mounts, &local_err)) { |
46d4c572 TS |
1451 | error_propagate(errp, local_err); |
1452 | return NULL; | |
1453 | } | |
1454 | ||
1455 | QTAILQ_FOREACH(mount, &mounts, next) { | |
1456 | g_debug("Building guest fsinfo for '%s'", mount->dirname); | |
1457 | ||
54aa3de7 | 1458 | QAPI_LIST_PREPEND(ret, build_guest_fsinfo(mount, &local_err)); |
46d4c572 TS |
1459 | if (local_err) { |
1460 | error_propagate(errp, local_err); | |
1461 | qapi_free_GuestFilesystemInfoList(ret); | |
1462 | ret = NULL; | |
1463 | break; | |
1464 | } | |
1465 | } | |
1466 | ||
1467 | free_fs_mount_list(&mounts); | |
1468 | return ret; | |
1469 | } | |
1470 | ||
1471 | ||
ec0f694c TS |
1472 | typedef enum { |
1473 | FSFREEZE_HOOK_THAW = 0, | |
1474 | FSFREEZE_HOOK_FREEZE, | |
1475 | } FsfreezeHookArg; | |
1476 | ||
13a439ec | 1477 | static const char *fsfreeze_hook_arg_string[] = { |
ec0f694c TS |
1478 | "thaw", |
1479 | "freeze", | |
1480 | }; | |
1481 | ||
77dbc81b | 1482 | static void execute_fsfreeze_hook(FsfreezeHookArg arg, Error **errp) |
ec0f694c TS |
1483 | { |
1484 | int status; | |
1485 | pid_t pid; | |
1486 | const char *hook; | |
1487 | const char *arg_str = fsfreeze_hook_arg_string[arg]; | |
1488 | Error *local_err = NULL; | |
1489 | ||
1490 | hook = ga_fsfreeze_hook(ga_state); | |
1491 | if (!hook) { | |
1492 | return; | |
1493 | } | |
1494 | if (access(hook, X_OK) != 0) { | |
77dbc81b | 1495 | error_setg_errno(errp, errno, "can't access fsfreeze hook '%s'", hook); |
ec0f694c TS |
1496 | return; |
1497 | } | |
1498 | ||
1499 | slog("executing fsfreeze hook with arg '%s'", arg_str); | |
1500 | pid = fork(); | |
1501 | if (pid == 0) { | |
1502 | setsid(); | |
1503 | reopen_fd_to_null(0); | |
1504 | reopen_fd_to_null(1); | |
1505 | reopen_fd_to_null(2); | |
1506 | ||
fcc41961 | 1507 | execl(hook, hook, arg_str, NULL); |
ec0f694c TS |
1508 | _exit(EXIT_FAILURE); |
1509 | } else if (pid < 0) { | |
77dbc81b | 1510 | error_setg_errno(errp, errno, "failed to create child process"); |
ec0f694c TS |
1511 | return; |
1512 | } | |
1513 | ||
1514 | ga_wait_child(pid, &status, &local_err); | |
84d18f06 | 1515 | if (local_err) { |
77dbc81b | 1516 | error_propagate(errp, local_err); |
ec0f694c TS |
1517 | return; |
1518 | } | |
1519 | ||
1520 | if (!WIFEXITED(status)) { | |
77dbc81b | 1521 | error_setg(errp, "fsfreeze hook has terminated abnormally"); |
ec0f694c TS |
1522 | return; |
1523 | } | |
1524 | ||
1525 | status = WEXITSTATUS(status); | |
1526 | if (status) { | |
77dbc81b | 1527 | error_setg(errp, "fsfreeze hook has failed with status %d", status); |
ec0f694c TS |
1528 | return; |
1529 | } | |
1530 | } | |
1531 | ||
e3d4d252 MR |
1532 | /* |
1533 | * Return status of freeze/thaw | |
1534 | */ | |
77dbc81b | 1535 | GuestFsfreezeStatus qmp_guest_fsfreeze_status(Error **errp) |
e3d4d252 | 1536 | { |
f22d85e9 MR |
1537 | if (ga_is_frozen(ga_state)) { |
1538 | return GUEST_FSFREEZE_STATUS_FROZEN; | |
1539 | } | |
1540 | ||
1541 | return GUEST_FSFREEZE_STATUS_THAWED; | |
e3d4d252 MR |
1542 | } |
1543 | ||
e99bce20 TS |
1544 | int64_t qmp_guest_fsfreeze_freeze(Error **errp) |
1545 | { | |
1546 | return qmp_guest_fsfreeze_freeze_list(false, NULL, errp); | |
1547 | } | |
1548 | ||
e99bce20 TS |
1549 | int64_t qmp_guest_fsfreeze_freeze_list(bool has_mountpoints, |
1550 | strList *mountpoints, | |
1551 | Error **errp) | |
e3d4d252 | 1552 | { |
518b0d80 | 1553 | int ret; |
af02203f | 1554 | FsMountList mounts; |
261551d1 | 1555 | Error *local_err = NULL; |
e3d4d252 MR |
1556 | |
1557 | slog("guest-fsfreeze called"); | |
1558 | ||
ec0f694c | 1559 | execute_fsfreeze_hook(FSFREEZE_HOOK_FREEZE, &local_err); |
84d18f06 | 1560 | if (local_err) { |
77dbc81b | 1561 | error_propagate(errp, local_err); |
ec0f694c TS |
1562 | return -1; |
1563 | } | |
1564 | ||
9e8aded4 | 1565 | QTAILQ_INIT(&mounts); |
561bfcb6 | 1566 | if (!build_fs_mount_list(&mounts, &local_err)) { |
77dbc81b | 1567 | error_propagate(errp, local_err); |
261551d1 | 1568 | return -1; |
e3d4d252 MR |
1569 | } |
1570 | ||
1571 | /* cannot risk guest agent blocking itself on a write in this state */ | |
f22d85e9 | 1572 | ga_set_frozen(ga_state); |
e3d4d252 | 1573 | |
518b0d80 AI |
1574 | ret = qmp_guest_fsfreeze_do_freeze_list(has_mountpoints, mountpoints, |
1575 | mounts, errp); | |
e3d4d252 | 1576 | |
af02203f | 1577 | free_fs_mount_list(&mounts); |
65650f01 CH |
1578 | /* We may not issue any FIFREEZE here. |
1579 | * Just unset ga_state here and ready for the next call. | |
1580 | */ | |
518b0d80 | 1581 | if (ret == 0) { |
65650f01 | 1582 | ga_unset_frozen(ga_state); |
518b0d80 AI |
1583 | } else if (ret < 0) { |
1584 | qmp_guest_fsfreeze_thaw(NULL); | |
65650f01 | 1585 | } |
518b0d80 | 1586 | return ret; |
e3d4d252 MR |
1587 | } |
1588 | ||
77dbc81b | 1589 | int64_t qmp_guest_fsfreeze_thaw(Error **errp) |
e3d4d252 MR |
1590 | { |
1591 | int ret; | |
9e8aded4 | 1592 | |
518b0d80 AI |
1593 | ret = qmp_guest_fsfreeze_do_thaw(errp); |
1594 | if (ret >= 0) { | |
1595 | ga_unset_frozen(ga_state); | |
1596 | execute_fsfreeze_hook(FSFREEZE_HOOK_THAW, errp); | |
1597 | } else { | |
1598 | ret = 0; | |
e3d4d252 MR |
1599 | } |
1600 | ||
518b0d80 | 1601 | return ret; |
e3d4d252 MR |
1602 | } |
1603 | ||
e3d4d252 MR |
1604 | static void guest_fsfreeze_cleanup(void) |
1605 | { | |
e3d4d252 MR |
1606 | Error *err = NULL; |
1607 | ||
f22d85e9 | 1608 | if (ga_is_frozen(ga_state) == GUEST_FSFREEZE_STATUS_FROZEN) { |
6f686749 MA |
1609 | qmp_guest_fsfreeze_thaw(&err); |
1610 | if (err) { | |
1611 | slog("failed to clean up frozen filesystems: %s", | |
1612 | error_get_pretty(err)); | |
1613 | error_free(err); | |
e3d4d252 MR |
1614 | } |
1615 | } | |
1616 | } | |
e72c3f2e | 1617 | #endif /* CONFIG_FSFREEZE */ |
e3d4d252 | 1618 | |
eab5fd59 PB |
1619 | #if defined(CONFIG_FSTRIM) |
1620 | /* | |
1621 | * Walk list of mounted file systems in the guest, and trim them. | |
1622 | */ | |
e82855d9 JO |
1623 | GuestFilesystemTrimResponse * |
1624 | qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **errp) | |
eab5fd59 | 1625 | { |
e82855d9 | 1626 | GuestFilesystemTrimResponse *response; |
e82855d9 | 1627 | GuestFilesystemTrimResult *result; |
eab5fd59 PB |
1628 | int ret = 0; |
1629 | FsMountList mounts; | |
1630 | struct FsMount *mount; | |
1631 | int fd; | |
73a652a1 | 1632 | struct fstrim_range r; |
eab5fd59 PB |
1633 | |
1634 | slog("guest-fstrim called"); | |
1635 | ||
1636 | QTAILQ_INIT(&mounts); | |
561bfcb6 | 1637 | if (!build_fs_mount_list(&mounts, errp)) { |
e82855d9 | 1638 | return NULL; |
eab5fd59 PB |
1639 | } |
1640 | ||
e82855d9 JO |
1641 | response = g_malloc0(sizeof(*response)); |
1642 | ||
eab5fd59 | 1643 | QTAILQ_FOREACH(mount, &mounts, next) { |
e82855d9 JO |
1644 | result = g_malloc0(sizeof(*result)); |
1645 | result->path = g_strdup(mount->dirname); | |
1646 | ||
54aa3de7 | 1647 | QAPI_LIST_PREPEND(response->paths, result); |
e82855d9 | 1648 | |
b9947c9c | 1649 | fd = qga_open_cloexec(mount->dirname, O_RDONLY, 0); |
eab5fd59 | 1650 | if (fd == -1) { |
e82855d9 JO |
1651 | result->error = g_strdup_printf("failed to open: %s", |
1652 | strerror(errno)); | |
1653 | result->has_error = true; | |
1654 | continue; | |
eab5fd59 PB |
1655 | } |
1656 | ||
e35916ac MT |
1657 | /* We try to cull filesystems we know won't work in advance, but other |
1658 | * filesystems may not implement fstrim for less obvious reasons. | |
1659 | * These will report EOPNOTSUPP; while in some other cases ENOTTY | |
1660 | * will be reported (e.g. CD-ROMs). | |
e82855d9 | 1661 | * Any other error means an unexpected error. |
eab5fd59 | 1662 | */ |
73a652a1 JO |
1663 | r.start = 0; |
1664 | r.len = -1; | |
1665 | r.minlen = has_minimum ? minimum : 0; | |
eab5fd59 PB |
1666 | ret = ioctl(fd, FITRIM, &r); |
1667 | if (ret == -1) { | |
e82855d9 JO |
1668 | result->has_error = true; |
1669 | if (errno == ENOTTY || errno == EOPNOTSUPP) { | |
1670 | result->error = g_strdup("trim not supported"); | |
1671 | } else { | |
1672 | result->error = g_strdup_printf("failed to trim: %s", | |
1673 | strerror(errno)); | |
eab5fd59 | 1674 | } |
e82855d9 JO |
1675 | close(fd); |
1676 | continue; | |
eab5fd59 | 1677 | } |
e82855d9 JO |
1678 | |
1679 | result->has_minimum = true; | |
1680 | result->minimum = r.minlen; | |
1681 | result->has_trimmed = true; | |
1682 | result->trimmed = r.len; | |
eab5fd59 PB |
1683 | close(fd); |
1684 | } | |
1685 | ||
eab5fd59 | 1686 | free_fs_mount_list(&mounts); |
e82855d9 | 1687 | return response; |
eab5fd59 PB |
1688 | } |
1689 | #endif /* CONFIG_FSTRIM */ | |
1690 | ||
1691 | ||
11d0f125 LC |
1692 | #define LINUX_SYS_STATE_FILE "/sys/power/state" |
1693 | #define SUSPEND_SUPPORTED 0 | |
1694 | #define SUSPEND_NOT_SUPPORTED 1 | |
1695 | ||
8b020b5e DHB |
1696 | typedef enum { |
1697 | SUSPEND_MODE_DISK = 0, | |
1698 | SUSPEND_MODE_RAM = 1, | |
1699 | SUSPEND_MODE_HYBRID = 2, | |
1700 | } SuspendMode; | |
1701 | ||
1702 | /* | |
1703 | * Executes a command in a child process using g_spawn_sync, | |
1704 | * returning an int >= 0 representing the exit status of the | |
1705 | * process. | |
1706 | * | |
1707 | * If the program wasn't found in path, returns -1. | |
1708 | * | |
1709 | * If a problem happened when creating the child process, | |
1710 | * returns -1 and errp is set. | |
1711 | */ | |
1712 | static int run_process_child(const char *command[], Error **errp) | |
11d0f125 | 1713 | { |
8b020b5e DHB |
1714 | int exit_status, spawn_flag; |
1715 | GError *g_err = NULL; | |
1716 | bool success; | |
1717 | ||
1718 | spawn_flag = G_SPAWN_SEARCH_PATH | G_SPAWN_STDOUT_TO_DEV_NULL | | |
1719 | G_SPAWN_STDERR_TO_DEV_NULL; | |
11d0f125 | 1720 | |
fcc41961 | 1721 | success = g_spawn_sync(NULL, (char **)command, NULL, spawn_flag, |
8b020b5e DHB |
1722 | NULL, NULL, NULL, NULL, |
1723 | &exit_status, &g_err); | |
304a0fcb | 1724 | |
8b020b5e DHB |
1725 | if (success) { |
1726 | return WEXITSTATUS(exit_status); | |
304a0fcb DHB |
1727 | } |
1728 | ||
8b020b5e DHB |
1729 | if (g_err && (g_err->code != G_SPAWN_ERROR_NOENT)) { |
1730 | error_setg(errp, "failed to create child process, error '%s'", | |
1731 | g_err->message); | |
a5fcf0e3 | 1732 | } |
11d0f125 | 1733 | |
8b020b5e DHB |
1734 | g_error_free(g_err); |
1735 | return -1; | |
1736 | } | |
1737 | ||
067927d6 DHB |
1738 | static bool systemd_supports_mode(SuspendMode mode, Error **errp) |
1739 | { | |
067927d6 DHB |
1740 | const char *systemctl_args[3] = {"systemd-hibernate", "systemd-suspend", |
1741 | "systemd-hybrid-sleep"}; | |
1742 | const char *cmd[4] = {"systemctl", "status", systemctl_args[mode], NULL}; | |
1743 | int status; | |
1744 | ||
992861fb | 1745 | status = run_process_child(cmd, errp); |
067927d6 DHB |
1746 | |
1747 | /* | |
1748 | * systemctl status uses LSB return codes so we can expect | |
1749 | * status > 0 and be ok. To assert if the guest has support | |
1750 | * for the selected suspend mode, status should be < 4. 4 is | |
1751 | * the code for unknown service status, the return value when | |
1752 | * the service does not exist. A common value is status = 3 | |
1753 | * (program is not running). | |
1754 | */ | |
1755 | if (status > 0 && status < 4) { | |
1756 | return true; | |
1757 | } | |
1758 | ||
067927d6 DHB |
1759 | return false; |
1760 | } | |
1761 | ||
1762 | static void systemd_suspend(SuspendMode mode, Error **errp) | |
1763 | { | |
1764 | Error *local_err = NULL; | |
1765 | const char *systemctl_args[3] = {"hibernate", "suspend", "hybrid-sleep"}; | |
1766 | const char *cmd[3] = {"systemctl", systemctl_args[mode], NULL}; | |
1767 | int status; | |
1768 | ||
1769 | status = run_process_child(cmd, &local_err); | |
1770 | ||
1771 | if (status == 0) { | |
1772 | return; | |
1773 | } | |
1774 | ||
1775 | if ((status == -1) && !local_err) { | |
1776 | error_setg(errp, "the helper program 'systemctl %s' was not found", | |
1777 | systemctl_args[mode]); | |
1778 | return; | |
1779 | } | |
1780 | ||
1781 | if (local_err) { | |
1782 | error_propagate(errp, local_err); | |
1783 | } else { | |
1784 | error_setg(errp, "the helper program 'systemctl %s' returned an " | |
1785 | "unexpected exit status code (%d)", | |
1786 | systemctl_args[mode], status); | |
1787 | } | |
1788 | } | |
1789 | ||
8b020b5e DHB |
1790 | static bool pmutils_supports_mode(SuspendMode mode, Error **errp) |
1791 | { | |
1792 | Error *local_err = NULL; | |
1793 | const char *pmutils_args[3] = {"--hibernate", "--suspend", | |
1794 | "--suspend-hybrid"}; | |
1795 | const char *cmd[3] = {"pm-is-supported", pmutils_args[mode], NULL}; | |
1796 | int status; | |
1797 | ||
1798 | status = run_process_child(cmd, &local_err); | |
1799 | ||
1800 | if (status == SUSPEND_SUPPORTED) { | |
1801 | return true; | |
11d0f125 LC |
1802 | } |
1803 | ||
8b020b5e DHB |
1804 | if ((status == -1) && !local_err) { |
1805 | return false; | |
6b26e837 | 1806 | } |
11d0f125 | 1807 | |
8b020b5e DHB |
1808 | if (local_err) { |
1809 | error_propagate(errp, local_err); | |
1810 | } else { | |
77dbc81b | 1811 | error_setg(errp, |
8b020b5e DHB |
1812 | "the helper program '%s' returned an unexpected exit" |
1813 | " status code (%d)", "pm-is-supported", status); | |
11d0f125 LC |
1814 | } |
1815 | ||
8b020b5e | 1816 | return false; |
a5fcf0e3 DHB |
1817 | } |
1818 | ||
8b020b5e | 1819 | static void pmutils_suspend(SuspendMode mode, Error **errp) |
246d76eb DHB |
1820 | { |
1821 | Error *local_err = NULL; | |
8b020b5e DHB |
1822 | const char *pmutils_binaries[3] = {"pm-hibernate", "pm-suspend", |
1823 | "pm-suspend-hybrid"}; | |
1824 | const char *cmd[2] = {pmutils_binaries[mode], NULL}; | |
246d76eb DHB |
1825 | int status; |
1826 | ||
8b020b5e | 1827 | status = run_process_child(cmd, &local_err); |
246d76eb | 1828 | |
8b020b5e | 1829 | if (status == 0) { |
246d76eb DHB |
1830 | return; |
1831 | } | |
1832 | ||
8b020b5e DHB |
1833 | if ((status == -1) && !local_err) { |
1834 | error_setg(errp, "the helper program '%s' was not found", | |
1835 | pmutils_binaries[mode]); | |
1836 | return; | |
246d76eb DHB |
1837 | } |
1838 | ||
246d76eb DHB |
1839 | if (local_err) { |
1840 | error_propagate(errp, local_err); | |
8b020b5e | 1841 | } else { |
246d76eb | 1842 | error_setg(errp, |
8b020b5e DHB |
1843 | "the helper program '%s' returned an unexpected exit" |
1844 | " status code (%d)", pmutils_binaries[mode], status); | |
246d76eb | 1845 | } |
246d76eb DHB |
1846 | } |
1847 | ||
8b020b5e | 1848 | static bool linux_sys_state_supports_mode(SuspendMode mode, Error **errp) |
a5fcf0e3 | 1849 | { |
8b020b5e DHB |
1850 | const char *sysfile_strs[3] = {"disk", "mem", NULL}; |
1851 | const char *sysfile_str = sysfile_strs[mode]; | |
a5fcf0e3 DHB |
1852 | char buf[32]; /* hopefully big enough */ |
1853 | int fd; | |
1854 | ssize_t ret; | |
1855 | ||
8b020b5e DHB |
1856 | if (!sysfile_str) { |
1857 | error_setg(errp, "unknown guest suspend mode"); | |
a5fcf0e3 DHB |
1858 | return false; |
1859 | } | |
1860 | ||
1861 | fd = open(LINUX_SYS_STATE_FILE, O_RDONLY); | |
1862 | if (fd < 0) { | |
1863 | return false; | |
1864 | } | |
1865 | ||
1866 | ret = read(fd, buf, sizeof(buf) - 1); | |
d9c745c1 | 1867 | close(fd); |
a5fcf0e3 DHB |
1868 | if (ret <= 0) { |
1869 | return false; | |
1870 | } | |
1871 | buf[ret] = '\0'; | |
1872 | ||
1873 | if (strstr(buf, sysfile_str)) { | |
1874 | return true; | |
1875 | } | |
1876 | return false; | |
1877 | } | |
1878 | ||
8b020b5e | 1879 | static void linux_sys_state_suspend(SuspendMode mode, Error **errp) |
11d0f125 | 1880 | { |
7b376087 | 1881 | Error *local_err = NULL; |
8b020b5e DHB |
1882 | const char *sysfile_strs[3] = {"disk", "mem", NULL}; |
1883 | const char *sysfile_str = sysfile_strs[mode]; | |
7b376087 | 1884 | pid_t pid; |
dc8764f0 | 1885 | int status; |
11d0f125 | 1886 | |
8b020b5e | 1887 | if (!sysfile_str) { |
304a0fcb DHB |
1888 | error_setg(errp, "unknown guest suspend mode"); |
1889 | return; | |
1890 | } | |
1891 | ||
11d0f125 | 1892 | pid = fork(); |
246d76eb | 1893 | if (!pid) { |
11d0f125 LC |
1894 | /* child */ |
1895 | int fd; | |
1896 | ||
1897 | setsid(); | |
1898 | reopen_fd_to_null(0); | |
1899 | reopen_fd_to_null(1); | |
1900 | reopen_fd_to_null(2); | |
1901 | ||
11d0f125 LC |
1902 | fd = open(LINUX_SYS_STATE_FILE, O_WRONLY); |
1903 | if (fd < 0) { | |
1904 | _exit(EXIT_FAILURE); | |
1905 | } | |
1906 | ||
1907 | if (write(fd, sysfile_str, strlen(sysfile_str)) < 0) { | |
1908 | _exit(EXIT_FAILURE); | |
1909 | } | |
1910 | ||
1911 | _exit(EXIT_SUCCESS); | |
7b376087 | 1912 | } else if (pid < 0) { |
77dbc81b | 1913 | error_setg_errno(errp, errno, "failed to create child process"); |
246d76eb | 1914 | return; |
11d0f125 LC |
1915 | } |
1916 | ||
7b376087 | 1917 | ga_wait_child(pid, &status, &local_err); |
84d18f06 | 1918 | if (local_err) { |
77dbc81b | 1919 | error_propagate(errp, local_err); |
246d76eb | 1920 | return; |
dc8764f0 LC |
1921 | } |
1922 | ||
7b376087 | 1923 | if (WEXITSTATUS(status)) { |
77dbc81b | 1924 | error_setg(errp, "child process has failed to suspend"); |
11d0f125 | 1925 | } |
dc8764f0 | 1926 | |
246d76eb DHB |
1927 | } |
1928 | ||
8b020b5e | 1929 | static void guest_suspend(SuspendMode mode, Error **errp) |
246d76eb DHB |
1930 | { |
1931 | Error *local_err = NULL; | |
73e1d8eb | 1932 | bool mode_supported = false; |
246d76eb | 1933 | |
73e1d8eb DHB |
1934 | if (systemd_supports_mode(mode, &local_err)) { |
1935 | mode_supported = true; | |
1936 | systemd_suspend(mode, &local_err); | |
246d76eb DHB |
1937 | } |
1938 | ||
067927d6 DHB |
1939 | if (!local_err) { |
1940 | return; | |
1941 | } | |
1942 | ||
1943 | error_free(local_err); | |
6a4a3853 | 1944 | local_err = NULL; |
067927d6 | 1945 | |
73e1d8eb DHB |
1946 | if (pmutils_supports_mode(mode, &local_err)) { |
1947 | mode_supported = true; | |
1948 | pmutils_suspend(mode, &local_err); | |
1949 | } | |
1950 | ||
246d76eb DHB |
1951 | if (!local_err) { |
1952 | return; | |
1953 | } | |
1954 | ||
1955 | error_free(local_err); | |
6a4a3853 | 1956 | local_err = NULL; |
246d76eb | 1957 | |
73e1d8eb DHB |
1958 | if (linux_sys_state_supports_mode(mode, &local_err)) { |
1959 | mode_supported = true; | |
1960 | linux_sys_state_suspend(mode, &local_err); | |
1961 | } | |
1962 | ||
1963 | if (!mode_supported) { | |
6a4a3853 | 1964 | error_free(local_err); |
73e1d8eb DHB |
1965 | error_setg(errp, |
1966 | "the requested suspend mode is not supported by the guest"); | |
b2322003 | 1967 | } else { |
246d76eb DHB |
1968 | error_propagate(errp, local_err); |
1969 | } | |
11d0f125 LC |
1970 | } |
1971 | ||
77dbc81b | 1972 | void qmp_guest_suspend_disk(Error **errp) |
11d0f125 | 1973 | { |
304a0fcb | 1974 | guest_suspend(SUSPEND_MODE_DISK, errp); |
11d0f125 LC |
1975 | } |
1976 | ||
77dbc81b | 1977 | void qmp_guest_suspend_ram(Error **errp) |
fbf42210 | 1978 | { |
304a0fcb | 1979 | guest_suspend(SUSPEND_MODE_RAM, errp); |
fbf42210 LC |
1980 | } |
1981 | ||
77dbc81b | 1982 | void qmp_guest_suspend_hybrid(Error **errp) |
95f4f404 | 1983 | { |
304a0fcb | 1984 | guest_suspend(SUSPEND_MODE_HYBRID, errp); |
95f4f404 LC |
1985 | } |
1986 | ||
d2baff62 LE |
1987 | /* Transfer online/offline status between @vcpu and the guest system. |
1988 | * | |
1989 | * On input either @errp or *@errp must be NULL. | |
1990 | * | |
1991 | * In system-to-@vcpu direction, the following @vcpu fields are accessed: | |
1992 | * - R: vcpu->logical_id | |
1993 | * - W: vcpu->online | |
1994 | * - W: vcpu->can_offline | |
1995 | * | |
1996 | * In @vcpu-to-system direction, the following @vcpu fields are accessed: | |
1997 | * - R: vcpu->logical_id | |
1998 | * - R: vcpu->online | |
1999 | * | |
2000 | * Written members remain unmodified on error. | |
2001 | */ | |
2002 | static void transfer_vcpu(GuestLogicalProcessor *vcpu, bool sys2vcpu, | |
b4bf912a | 2003 | char *dirpath, Error **errp) |
d2baff62 | 2004 | { |
b4bf912a IM |
2005 | int fd; |
2006 | int res; | |
d2baff62 | 2007 | int dirfd; |
b4bf912a | 2008 | static const char fn[] = "online"; |
d2baff62 | 2009 | |
d2baff62 LE |
2010 | dirfd = open(dirpath, O_RDONLY | O_DIRECTORY); |
2011 | if (dirfd == -1) { | |
2012 | error_setg_errno(errp, errno, "open(\"%s\")", dirpath); | |
b4bf912a IM |
2013 | return; |
2014 | } | |
d2baff62 | 2015 | |
b4bf912a IM |
2016 | fd = openat(dirfd, fn, sys2vcpu ? O_RDONLY : O_RDWR); |
2017 | if (fd == -1) { | |
2018 | if (errno != ENOENT) { | |
2019 | error_setg_errno(errp, errno, "open(\"%s/%s\")", dirpath, fn); | |
2020 | } else if (sys2vcpu) { | |
2021 | vcpu->online = true; | |
2022 | vcpu->can_offline = false; | |
2023 | } else if (!vcpu->online) { | |
2024 | error_setg(errp, "logical processor #%" PRId64 " can't be " | |
2025 | "offlined", vcpu->logical_id); | |
2026 | } /* otherwise pretend successful re-onlining */ | |
2027 | } else { | |
2028 | unsigned char status; | |
2029 | ||
2030 | res = pread(fd, &status, 1, 0); | |
2031 | if (res == -1) { | |
2032 | error_setg_errno(errp, errno, "pread(\"%s/%s\")", dirpath, fn); | |
2033 | } else if (res == 0) { | |
2034 | error_setg(errp, "pread(\"%s/%s\"): unexpected EOF", dirpath, | |
2035 | fn); | |
2036 | } else if (sys2vcpu) { | |
2037 | vcpu->online = (status != '0'); | |
2038 | vcpu->can_offline = true; | |
2039 | } else if (vcpu->online != (status != '0')) { | |
2040 | status = '0' + vcpu->online; | |
2041 | if (pwrite(fd, &status, 1, 0) == -1) { | |
2042 | error_setg_errno(errp, errno, "pwrite(\"%s/%s\")", dirpath, | |
2043 | fn); | |
2044 | } | |
2045 | } /* otherwise pretend successful re-(on|off)-lining */ | |
d2baff62 | 2046 | |
b4bf912a | 2047 | res = close(fd); |
d2baff62 LE |
2048 | g_assert(res == 0); |
2049 | } | |
2050 | ||
b4bf912a IM |
2051 | res = close(dirfd); |
2052 | g_assert(res == 0); | |
d2baff62 LE |
2053 | } |
2054 | ||
2055 | GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp) | |
2056 | { | |
c3033fd3 | 2057 | GuestLogicalProcessorList *head, **tail; |
27e7de3c LM |
2058 | const char *cpu_dir = "/sys/devices/system/cpu"; |
2059 | const gchar *line; | |
2060 | g_autoptr(GDir) cpu_gdir = NULL; | |
d2baff62 LE |
2061 | Error *local_err = NULL; |
2062 | ||
d2baff62 | 2063 | head = NULL; |
c3033fd3 | 2064 | tail = &head; |
27e7de3c | 2065 | cpu_gdir = g_dir_open(cpu_dir, 0, NULL); |
d2baff62 | 2066 | |
27e7de3c LM |
2067 | if (cpu_gdir == NULL) { |
2068 | error_setg_errno(errp, errno, "failed to list entries: %s", cpu_dir); | |
2069 | return NULL; | |
2070 | } | |
b4bf912a | 2071 | |
27e7de3c LM |
2072 | while (local_err == NULL && (line = g_dir_read_name(cpu_gdir)) != NULL) { |
2073 | GuestLogicalProcessor *vcpu; | |
2074 | int64_t id; | |
2075 | if (sscanf(line, "cpu%" PRId64, &id)) { | |
2076 | g_autofree char *path = g_strdup_printf("/sys/devices/system/cpu/" | |
2077 | "cpu%" PRId64 "/", id); | |
b4bf912a IM |
2078 | vcpu = g_malloc0(sizeof *vcpu); |
2079 | vcpu->logical_id = id; | |
2080 | vcpu->has_can_offline = true; /* lolspeak ftw */ | |
2081 | transfer_vcpu(vcpu, true, path, &local_err); | |
c3033fd3 | 2082 | QAPI_LIST_APPEND(tail, vcpu); |
b4bf912a | 2083 | } |
d2baff62 LE |
2084 | } |
2085 | ||
2086 | if (local_err == NULL) { | |
2087 | /* there's no guest with zero VCPUs */ | |
2088 | g_assert(head != NULL); | |
2089 | return head; | |
2090 | } | |
2091 | ||
2092 | qapi_free_GuestLogicalProcessorList(head); | |
2093 | error_propagate(errp, local_err); | |
2094 | return NULL; | |
2095 | } | |
2096 | ||
cbb65fc2 LE |
2097 | int64_t qmp_guest_set_vcpus(GuestLogicalProcessorList *vcpus, Error **errp) |
2098 | { | |
2099 | int64_t processed; | |
2100 | Error *local_err = NULL; | |
2101 | ||
2102 | processed = 0; | |
2103 | while (vcpus != NULL) { | |
b4bf912a IM |
2104 | char *path = g_strdup_printf("/sys/devices/system/cpu/cpu%" PRId64 "/", |
2105 | vcpus->value->logical_id); | |
2106 | ||
2107 | transfer_vcpu(vcpus->value, false, path, &local_err); | |
2108 | g_free(path); | |
cbb65fc2 LE |
2109 | if (local_err != NULL) { |
2110 | break; | |
2111 | } | |
2112 | ++processed; | |
2113 | vcpus = vcpus->next; | |
2114 | } | |
2115 | ||
2116 | if (local_err != NULL) { | |
2117 | if (processed == 0) { | |
2118 | error_propagate(errp, local_err); | |
2119 | } else { | |
2120 | error_free(local_err); | |
2121 | } | |
2122 | } | |
2123 | ||
2124 | return processed; | |
2125 | } | |
2126 | ||
215a2771 DB |
2127 | void qmp_guest_set_user_password(const char *username, |
2128 | const char *password, | |
2129 | bool crypted, | |
2130 | Error **errp) | |
2131 | { | |
2132 | Error *local_err = NULL; | |
2133 | char *passwd_path = NULL; | |
2134 | pid_t pid; | |
2135 | int status; | |
2136 | int datafd[2] = { -1, -1 }; | |
2137 | char *rawpasswddata = NULL; | |
2138 | size_t rawpasswdlen; | |
2139 | char *chpasswddata = NULL; | |
2140 | size_t chpasswdlen; | |
2141 | ||
920639ca DB |
2142 | rawpasswddata = (char *)qbase64_decode(password, -1, &rawpasswdlen, errp); |
2143 | if (!rawpasswddata) { | |
2144 | return; | |
2145 | } | |
215a2771 DB |
2146 | rawpasswddata = g_renew(char, rawpasswddata, rawpasswdlen + 1); |
2147 | rawpasswddata[rawpasswdlen] = '\0'; | |
2148 | ||
2149 | if (strchr(rawpasswddata, '\n')) { | |
2150 | error_setg(errp, "forbidden characters in raw password"); | |
2151 | goto out; | |
2152 | } | |
2153 | ||
2154 | if (strchr(username, '\n') || | |
2155 | strchr(username, ':')) { | |
2156 | error_setg(errp, "forbidden characters in username"); | |
2157 | goto out; | |
2158 | } | |
2159 | ||
2160 | chpasswddata = g_strdup_printf("%s:%s\n", username, rawpasswddata); | |
2161 | chpasswdlen = strlen(chpasswddata); | |
2162 | ||
2163 | passwd_path = g_find_program_in_path("chpasswd"); | |
2164 | ||
2165 | if (!passwd_path) { | |
2166 | error_setg(errp, "cannot find 'passwd' program in PATH"); | |
2167 | goto out; | |
2168 | } | |
2169 | ||
ed78331d | 2170 | if (!g_unix_open_pipe(datafd, FD_CLOEXEC, NULL)) { |
215a2771 DB |
2171 | error_setg(errp, "cannot create pipe FDs"); |
2172 | goto out; | |
2173 | } | |
2174 | ||
2175 | pid = fork(); | |
2176 | if (pid == 0) { | |
2177 | close(datafd[1]); | |
2178 | /* child */ | |
2179 | setsid(); | |
2180 | dup2(datafd[0], 0); | |
2181 | reopen_fd_to_null(1); | |
2182 | reopen_fd_to_null(2); | |
2183 | ||
2184 | if (crypted) { | |
fcc41961 | 2185 | execl(passwd_path, "chpasswd", "-e", NULL); |
215a2771 | 2186 | } else { |
fcc41961 | 2187 | execl(passwd_path, "chpasswd", NULL); |
215a2771 DB |
2188 | } |
2189 | _exit(EXIT_FAILURE); | |
2190 | } else if (pid < 0) { | |
2191 | error_setg_errno(errp, errno, "failed to create child process"); | |
2192 | goto out; | |
2193 | } | |
2194 | close(datafd[0]); | |
2195 | datafd[0] = -1; | |
2196 | ||
2197 | if (qemu_write_full(datafd[1], chpasswddata, chpasswdlen) != chpasswdlen) { | |
2198 | error_setg_errno(errp, errno, "cannot write new account password"); | |
2199 | goto out; | |
2200 | } | |
2201 | close(datafd[1]); | |
2202 | datafd[1] = -1; | |
2203 | ||
2204 | ga_wait_child(pid, &status, &local_err); | |
2205 | if (local_err) { | |
2206 | error_propagate(errp, local_err); | |
2207 | goto out; | |
2208 | } | |
2209 | ||
2210 | if (!WIFEXITED(status)) { | |
2211 | error_setg(errp, "child process has terminated abnormally"); | |
2212 | goto out; | |
2213 | } | |
2214 | ||
2215 | if (WEXITSTATUS(status)) { | |
2216 | error_setg(errp, "child process has failed to set user password"); | |
2217 | goto out; | |
2218 | } | |
2219 | ||
2220 | out: | |
2221 | g_free(chpasswddata); | |
2222 | g_free(rawpasswddata); | |
2223 | g_free(passwd_path); | |
2224 | if (datafd[0] != -1) { | |
2225 | close(datafd[0]); | |
2226 | } | |
2227 | if (datafd[1] != -1) { | |
2228 | close(datafd[1]); | |
2229 | } | |
2230 | } | |
2231 | ||
bd240fca HZ |
2232 | static void ga_read_sysfs_file(int dirfd, const char *pathname, char *buf, |
2233 | int size, Error **errp) | |
2234 | { | |
2235 | int fd; | |
2236 | int res; | |
2237 | ||
2238 | errno = 0; | |
2239 | fd = openat(dirfd, pathname, O_RDONLY); | |
2240 | if (fd == -1) { | |
2241 | error_setg_errno(errp, errno, "open sysfs file \"%s\"", pathname); | |
2242 | return; | |
2243 | } | |
2244 | ||
2245 | res = pread(fd, buf, size, 0); | |
2246 | if (res == -1) { | |
2247 | error_setg_errno(errp, errno, "pread sysfs file \"%s\"", pathname); | |
2248 | } else if (res == 0) { | |
2249 | error_setg(errp, "pread sysfs file \"%s\": unexpected EOF", pathname); | |
2250 | } | |
2251 | close(fd); | |
2252 | } | |
2253 | ||
2254 | static void ga_write_sysfs_file(int dirfd, const char *pathname, | |
2255 | const char *buf, int size, Error **errp) | |
2256 | { | |
2257 | int fd; | |
2258 | ||
2259 | errno = 0; | |
2260 | fd = openat(dirfd, pathname, O_WRONLY); | |
2261 | if (fd == -1) { | |
2262 | error_setg_errno(errp, errno, "open sysfs file \"%s\"", pathname); | |
2263 | return; | |
2264 | } | |
2265 | ||
2266 | if (pwrite(fd, buf, size, 0) == -1) { | |
2267 | error_setg_errno(errp, errno, "pwrite sysfs file \"%s\"", pathname); | |
2268 | } | |
2269 | ||
2270 | close(fd); | |
2271 | } | |
2272 | ||
2273 | /* Transfer online/offline status between @mem_blk and the guest system. | |
2274 | * | |
2275 | * On input either @errp or *@errp must be NULL. | |
2276 | * | |
2277 | * In system-to-@mem_blk direction, the following @mem_blk fields are accessed: | |
2278 | * - R: mem_blk->phys_index | |
2279 | * - W: mem_blk->online | |
2280 | * - W: mem_blk->can_offline | |
2281 | * | |
2282 | * In @mem_blk-to-system direction, the following @mem_blk fields are accessed: | |
2283 | * - R: mem_blk->phys_index | |
2284 | * - R: mem_blk->online | |
2285 | *- R: mem_blk->can_offline | |
2286 | * Written members remain unmodified on error. | |
2287 | */ | |
2288 | static void transfer_memory_block(GuestMemoryBlock *mem_blk, bool sys2memblk, | |
2289 | GuestMemoryBlockResponse *result, | |
2290 | Error **errp) | |
2291 | { | |
2292 | char *dirpath; | |
2293 | int dirfd; | |
2294 | char *status; | |
2295 | Error *local_err = NULL; | |
2296 | ||
2297 | if (!sys2memblk) { | |
2298 | DIR *dp; | |
2299 | ||
2300 | if (!result) { | |
2301 | error_setg(errp, "Internal error, 'result' should not be NULL"); | |
2302 | return; | |
2303 | } | |
2304 | errno = 0; | |
2305 | dp = opendir("/sys/devices/system/memory/"); | |
2306 | /* if there is no 'memory' directory in sysfs, | |
2307 | * we think this VM does not support online/offline memory block, | |
2308 | * any other solution? | |
2309 | */ | |
9879f5ac PMD |
2310 | if (!dp) { |
2311 | if (errno == ENOENT) { | |
2312 | result->response = | |
2313 | GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_NOT_SUPPORTED; | |
2314 | } | |
bd240fca HZ |
2315 | goto out1; |
2316 | } | |
2317 | closedir(dp); | |
2318 | } | |
2319 | ||
2320 | dirpath = g_strdup_printf("/sys/devices/system/memory/memory%" PRId64 "/", | |
2321 | mem_blk->phys_index); | |
2322 | dirfd = open(dirpath, O_RDONLY | O_DIRECTORY); | |
2323 | if (dirfd == -1) { | |
2324 | if (sys2memblk) { | |
2325 | error_setg_errno(errp, errno, "open(\"%s\")", dirpath); | |
2326 | } else { | |
2327 | if (errno == ENOENT) { | |
2328 | result->response = GUEST_MEMORY_BLOCK_RESPONSE_TYPE_NOT_FOUND; | |
2329 | } else { | |
2330 | result->response = | |
2331 | GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_FAILED; | |
2332 | } | |
2333 | } | |
2334 | g_free(dirpath); | |
2335 | goto out1; | |
2336 | } | |
2337 | g_free(dirpath); | |
2338 | ||
2339 | status = g_malloc0(10); | |
2340 | ga_read_sysfs_file(dirfd, "state", status, 10, &local_err); | |
2341 | if (local_err) { | |
2342 | /* treat with sysfs file that not exist in old kernel */ | |
2343 | if (errno == ENOENT) { | |
2344 | error_free(local_err); | |
2345 | if (sys2memblk) { | |
2346 | mem_blk->online = true; | |
2347 | mem_blk->can_offline = false; | |
2348 | } else if (!mem_blk->online) { | |
2349 | result->response = | |
2350 | GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_NOT_SUPPORTED; | |
2351 | } | |
2352 | } else { | |
2353 | if (sys2memblk) { | |
2354 | error_propagate(errp, local_err); | |
2355 | } else { | |
b368123d | 2356 | error_free(local_err); |
bd240fca HZ |
2357 | result->response = |
2358 | GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_FAILED; | |
2359 | } | |
2360 | } | |
2361 | goto out2; | |
2362 | } | |
2363 | ||
2364 | if (sys2memblk) { | |
2365 | char removable = '0'; | |
2366 | ||
2367 | mem_blk->online = (strncmp(status, "online", 6) == 0); | |
2368 | ||
2369 | ga_read_sysfs_file(dirfd, "removable", &removable, 1, &local_err); | |
2370 | if (local_err) { | |
67cc32eb | 2371 | /* if no 'removable' file, it doesn't support offline mem blk */ |
bd240fca HZ |
2372 | if (errno == ENOENT) { |
2373 | error_free(local_err); | |
2374 | mem_blk->can_offline = false; | |
2375 | } else { | |
2376 | error_propagate(errp, local_err); | |
2377 | } | |
2378 | } else { | |
2379 | mem_blk->can_offline = (removable != '0'); | |
2380 | } | |
2381 | } else { | |
2382 | if (mem_blk->online != (strncmp(status, "online", 6) == 0)) { | |
7064024d | 2383 | const char *new_state = mem_blk->online ? "online" : "offline"; |
bd240fca HZ |
2384 | |
2385 | ga_write_sysfs_file(dirfd, "state", new_state, strlen(new_state), | |
2386 | &local_err); | |
bd240fca HZ |
2387 | if (local_err) { |
2388 | error_free(local_err); | |
2389 | result->response = | |
2390 | GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_FAILED; | |
2391 | goto out2; | |
2392 | } | |
2393 | ||
2394 | result->response = GUEST_MEMORY_BLOCK_RESPONSE_TYPE_SUCCESS; | |
2395 | result->has_error_code = false; | |
2396 | } /* otherwise pretend successful re-(on|off)-lining */ | |
2397 | } | |
2398 | g_free(status); | |
2399 | close(dirfd); | |
2400 | return; | |
2401 | ||
2402 | out2: | |
2403 | g_free(status); | |
2404 | close(dirfd); | |
2405 | out1: | |
2406 | if (!sys2memblk) { | |
2407 | result->has_error_code = true; | |
2408 | result->error_code = errno; | |
2409 | } | |
2410 | } | |
2411 | ||
a065aaa9 HZ |
2412 | GuestMemoryBlockList *qmp_guest_get_memory_blocks(Error **errp) |
2413 | { | |
c3033fd3 | 2414 | GuestMemoryBlockList *head, **tail; |
bd240fca HZ |
2415 | Error *local_err = NULL; |
2416 | struct dirent *de; | |
2417 | DIR *dp; | |
2418 | ||
2419 | head = NULL; | |
c3033fd3 | 2420 | tail = &head; |
bd240fca HZ |
2421 | |
2422 | dp = opendir("/sys/devices/system/memory/"); | |
2423 | if (!dp) { | |
f693fe6e MR |
2424 | /* it's ok if this happens to be a system that doesn't expose |
2425 | * memory blocks via sysfs, but otherwise we should report | |
2426 | * an error | |
2427 | */ | |
2428 | if (errno != ENOENT) { | |
2429 | error_setg_errno(errp, errno, "Can't open directory" | |
9af9e0fe | 2430 | "\"/sys/devices/system/memory/\""); |
f693fe6e | 2431 | } |
bd240fca HZ |
2432 | return NULL; |
2433 | } | |
2434 | ||
2435 | /* Note: the phys_index of memory block may be discontinuous, | |
2436 | * this is because a memblk is the unit of the Sparse Memory design, which | |
2437 | * allows discontinuous memory ranges (ex. NUMA), so here we should | |
2438 | * traverse the memory block directory. | |
2439 | */ | |
2440 | while ((de = readdir(dp)) != NULL) { | |
2441 | GuestMemoryBlock *mem_blk; | |
bd240fca HZ |
2442 | |
2443 | if ((strncmp(de->d_name, "memory", 6) != 0) || | |
2444 | !(de->d_type & DT_DIR)) { | |
2445 | continue; | |
2446 | } | |
2447 | ||
2448 | mem_blk = g_malloc0(sizeof *mem_blk); | |
2449 | /* The d_name is "memoryXXX", phys_index is block id, same as XXX */ | |
2450 | mem_blk->phys_index = strtoul(&de->d_name[6], NULL, 10); | |
2451 | mem_blk->has_can_offline = true; /* lolspeak ftw */ | |
2452 | transfer_memory_block(mem_blk, true, NULL, &local_err); | |
4155c998 MA |
2453 | if (local_err) { |
2454 | break; | |
2455 | } | |
bd240fca | 2456 | |
c3033fd3 | 2457 | QAPI_LIST_APPEND(tail, mem_blk); |
bd240fca HZ |
2458 | } |
2459 | ||
2460 | closedir(dp); | |
2461 | if (local_err == NULL) { | |
2462 | /* there's no guest with zero memory blocks */ | |
2463 | if (head == NULL) { | |
2464 | error_setg(errp, "guest reported zero memory blocks!"); | |
2465 | } | |
2466 | return head; | |
2467 | } | |
2468 | ||
2469 | qapi_free_GuestMemoryBlockList(head); | |
2470 | error_propagate(errp, local_err); | |
a065aaa9 HZ |
2471 | return NULL; |
2472 | } | |
2473 | ||
2474 | GuestMemoryBlockResponseList * | |
2475 | qmp_guest_set_memory_blocks(GuestMemoryBlockList *mem_blks, Error **errp) | |
2476 | { | |
c3033fd3 | 2477 | GuestMemoryBlockResponseList *head, **tail; |
32ca7927 HZ |
2478 | Error *local_err = NULL; |
2479 | ||
2480 | head = NULL; | |
c3033fd3 | 2481 | tail = &head; |
32ca7927 HZ |
2482 | |
2483 | while (mem_blks != NULL) { | |
2484 | GuestMemoryBlockResponse *result; | |
32ca7927 HZ |
2485 | GuestMemoryBlock *current_mem_blk = mem_blks->value; |
2486 | ||
2487 | result = g_malloc0(sizeof(*result)); | |
2488 | result->phys_index = current_mem_blk->phys_index; | |
2489 | transfer_memory_block(current_mem_blk, false, result, &local_err); | |
2490 | if (local_err) { /* should never happen */ | |
2491 | goto err; | |
2492 | } | |
32ca7927 | 2493 | |
c3033fd3 | 2494 | QAPI_LIST_APPEND(tail, result); |
32ca7927 HZ |
2495 | mem_blks = mem_blks->next; |
2496 | } | |
2497 | ||
2498 | return head; | |
2499 | err: | |
2500 | qapi_free_GuestMemoryBlockResponseList(head); | |
2501 | error_propagate(errp, local_err); | |
a065aaa9 HZ |
2502 | return NULL; |
2503 | } | |
2504 | ||
2505 | GuestMemoryBlockInfo *qmp_guest_get_memory_block_info(Error **errp) | |
2506 | { | |
ef82b60b HZ |
2507 | Error *local_err = NULL; |
2508 | char *dirpath; | |
2509 | int dirfd; | |
2510 | char *buf; | |
2511 | GuestMemoryBlockInfo *info; | |
2512 | ||
2513 | dirpath = g_strdup_printf("/sys/devices/system/memory/"); | |
2514 | dirfd = open(dirpath, O_RDONLY | O_DIRECTORY); | |
2515 | if (dirfd == -1) { | |
2516 | error_setg_errno(errp, errno, "open(\"%s\")", dirpath); | |
2517 | g_free(dirpath); | |
2518 | return NULL; | |
2519 | } | |
2520 | g_free(dirpath); | |
2521 | ||
2522 | buf = g_malloc0(20); | |
2523 | ga_read_sysfs_file(dirfd, "block_size_bytes", buf, 20, &local_err); | |
8ce1ee46 | 2524 | close(dirfd); |
ef82b60b HZ |
2525 | if (local_err) { |
2526 | g_free(buf); | |
2527 | error_propagate(errp, local_err); | |
2528 | return NULL; | |
2529 | } | |
2530 | ||
2531 | info = g_new0(GuestMemoryBlockInfo, 1); | |
2532 | info->size = strtol(buf, NULL, 16); /* the unit is bytes */ | |
2533 | ||
2534 | g_free(buf); | |
2535 | ||
2536 | return info; | |
a065aaa9 HZ |
2537 | } |
2538 | ||
3569664e | 2539 | #define MAX_NAME_LEN 128 |
2540 | static GuestDiskStatsInfoList *guest_get_diskstats(Error **errp) | |
2541 | { | |
2542 | #ifdef CONFIG_LINUX | |
2543 | GuestDiskStatsInfoList *head = NULL, **tail = &head; | |
2544 | const char *diskstats = "/proc/diskstats"; | |
2545 | FILE *fp; | |
2546 | size_t n; | |
2547 | char *line = NULL; | |
2548 | ||
2549 | fp = fopen(diskstats, "r"); | |
2550 | if (fp == NULL) { | |
2551 | error_setg_errno(errp, errno, "open(\"%s\")", diskstats); | |
2552 | return NULL; | |
2553 | } | |
2554 | ||
2555 | while (getline(&line, &n, fp) != -1) { | |
2556 | g_autofree GuestDiskStatsInfo *diskstatinfo = NULL; | |
2557 | g_autofree GuestDiskStats *diskstat = NULL; | |
2558 | char dev_name[MAX_NAME_LEN]; | |
2559 | unsigned int ios_pgr, tot_ticks, rq_ticks, wr_ticks, dc_ticks, fl_ticks; | |
2560 | unsigned long rd_ios, rd_merges_or_rd_sec, rd_ticks_or_wr_sec, wr_ios; | |
2561 | unsigned long wr_merges, rd_sec_or_wr_ios, wr_sec; | |
2562 | unsigned long dc_ios, dc_merges, dc_sec, fl_ios; | |
2563 | unsigned int major, minor; | |
2564 | int i; | |
2565 | ||
2566 | i = sscanf(line, "%u %u %s %lu %lu %lu" | |
2567 | "%lu %lu %lu %lu %u %u %u %u" | |
2568 | "%lu %lu %lu %u %lu %u", | |
2569 | &major, &minor, dev_name, | |
2570 | &rd_ios, &rd_merges_or_rd_sec, &rd_sec_or_wr_ios, | |
2571 | &rd_ticks_or_wr_sec, &wr_ios, &wr_merges, &wr_sec, | |
2572 | &wr_ticks, &ios_pgr, &tot_ticks, &rq_ticks, | |
2573 | &dc_ios, &dc_merges, &dc_sec, &dc_ticks, | |
2574 | &fl_ios, &fl_ticks); | |
2575 | ||
2576 | if (i < 7) { | |
2577 | continue; | |
2578 | } | |
2579 | ||
2580 | diskstatinfo = g_new0(GuestDiskStatsInfo, 1); | |
2581 | diskstatinfo->name = g_strdup(dev_name); | |
2582 | diskstatinfo->major = major; | |
2583 | diskstatinfo->minor = minor; | |
2584 | ||
2585 | diskstat = g_new0(GuestDiskStats, 1); | |
2586 | if (i == 7) { | |
2587 | diskstat->has_read_ios = true; | |
2588 | diskstat->read_ios = rd_ios; | |
2589 | diskstat->has_read_sectors = true; | |
2590 | diskstat->read_sectors = rd_merges_or_rd_sec; | |
2591 | diskstat->has_write_ios = true; | |
2592 | diskstat->write_ios = rd_sec_or_wr_ios; | |
2593 | diskstat->has_write_sectors = true; | |
2594 | diskstat->write_sectors = rd_ticks_or_wr_sec; | |
2595 | } | |
2596 | if (i >= 14) { | |
2597 | diskstat->has_read_ios = true; | |
2598 | diskstat->read_ios = rd_ios; | |
2599 | diskstat->has_read_sectors = true; | |
2600 | diskstat->read_sectors = rd_sec_or_wr_ios; | |
2601 | diskstat->has_read_merges = true; | |
2602 | diskstat->read_merges = rd_merges_or_rd_sec; | |
2603 | diskstat->has_read_ticks = true; | |
2604 | diskstat->read_ticks = rd_ticks_or_wr_sec; | |
2605 | diskstat->has_write_ios = true; | |
2606 | diskstat->write_ios = wr_ios; | |
2607 | diskstat->has_write_sectors = true; | |
2608 | diskstat->write_sectors = wr_sec; | |
2609 | diskstat->has_write_merges = true; | |
2610 | diskstat->write_merges = wr_merges; | |
2611 | diskstat->has_write_ticks = true; | |
2612 | diskstat->write_ticks = wr_ticks; | |
2613 | diskstat->has_ios_pgr = true; | |
2614 | diskstat->ios_pgr = ios_pgr; | |
2615 | diskstat->has_total_ticks = true; | |
2616 | diskstat->total_ticks = tot_ticks; | |
2617 | diskstat->has_weight_ticks = true; | |
2618 | diskstat->weight_ticks = rq_ticks; | |
2619 | } | |
2620 | if (i >= 18) { | |
2621 | diskstat->has_discard_ios = true; | |
2622 | diskstat->discard_ios = dc_ios; | |
2623 | diskstat->has_discard_merges = true; | |
2624 | diskstat->discard_merges = dc_merges; | |
2625 | diskstat->has_discard_sectors = true; | |
2626 | diskstat->discard_sectors = dc_sec; | |
2627 | diskstat->has_discard_ticks = true; | |
2628 | diskstat->discard_ticks = dc_ticks; | |
2629 | } | |
2630 | if (i >= 20) { | |
2631 | diskstat->has_flush_ios = true; | |
2632 | diskstat->flush_ios = fl_ios; | |
2633 | diskstat->has_flush_ticks = true; | |
2634 | diskstat->flush_ticks = fl_ticks; | |
2635 | } | |
2636 | ||
2637 | diskstatinfo->stats = g_steal_pointer(&diskstat); | |
2638 | QAPI_LIST_APPEND(tail, diskstatinfo); | |
2639 | diskstatinfo = NULL; | |
2640 | } | |
2641 | free(line); | |
2642 | fclose(fp); | |
2643 | return head; | |
2644 | #else | |
2645 | g_debug("disk stats reporting available only for Linux"); | |
2646 | return NULL; | |
2647 | #endif | |
2648 | } | |
2649 | ||
2650 | GuestDiskStatsInfoList *qmp_guest_get_diskstats(Error **errp) | |
2651 | { | |
2652 | return guest_get_diskstats(errp); | |
2653 | } | |
2654 | ||
1db8a0b0 ZP |
2655 | GuestCpuStatsList *qmp_guest_get_cpustats(Error **errp) |
2656 | { | |
2657 | GuestCpuStatsList *head = NULL, **tail = &head; | |
2658 | const char *cpustats = "/proc/stat"; | |
2659 | int clk_tck = sysconf(_SC_CLK_TCK); | |
2660 | FILE *fp; | |
2661 | size_t n; | |
2662 | char *line = NULL; | |
2663 | ||
2664 | fp = fopen(cpustats, "r"); | |
2665 | if (fp == NULL) { | |
2666 | error_setg_errno(errp, errno, "open(\"%s\")", cpustats); | |
2667 | return NULL; | |
2668 | } | |
2669 | ||
2670 | while (getline(&line, &n, fp) != -1) { | |
2671 | GuestCpuStats *cpustat = NULL; | |
2672 | GuestLinuxCpuStats *linuxcpustat; | |
2673 | int i; | |
2674 | unsigned long user, system, idle, iowait, irq, softirq, steal, guest; | |
2675 | unsigned long nice, guest_nice; | |
2676 | char name[64]; | |
2677 | ||
2678 | i = sscanf(line, "%s %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu", | |
2679 | name, &user, &nice, &system, &idle, &iowait, &irq, &softirq, | |
2680 | &steal, &guest, &guest_nice); | |
2681 | ||
2682 | /* drop "cpu 1 2 3 ...", get "cpuX 1 2 3 ..." only */ | |
2683 | if ((i == EOF) || strncmp(name, "cpu", 3) || (name[3] == '\0')) { | |
2684 | continue; | |
2685 | } | |
2686 | ||
2687 | if (i < 5) { | |
2688 | slog("Parsing cpu stat from %s failed, see \"man proc\"", cpustats); | |
2689 | break; | |
2690 | } | |
2691 | ||
2692 | cpustat = g_new0(GuestCpuStats, 1); | |
2693 | cpustat->type = GUEST_CPU_STATS_TYPE_LINUX; | |
2694 | ||
2695 | linuxcpustat = &cpustat->u.q_linux; | |
2696 | linuxcpustat->cpu = atoi(&name[3]); | |
2697 | linuxcpustat->user = user * 1000 / clk_tck; | |
2698 | linuxcpustat->nice = nice * 1000 / clk_tck; | |
2699 | linuxcpustat->system = system * 1000 / clk_tck; | |
2700 | linuxcpustat->idle = idle * 1000 / clk_tck; | |
2701 | ||
2702 | if (i > 5) { | |
2703 | linuxcpustat->has_iowait = true; | |
2704 | linuxcpustat->iowait = iowait * 1000 / clk_tck; | |
2705 | } | |
2706 | ||
2707 | if (i > 6) { | |
2708 | linuxcpustat->has_irq = true; | |
2709 | linuxcpustat->irq = irq * 1000 / clk_tck; | |
2710 | linuxcpustat->has_softirq = true; | |
2711 | linuxcpustat->softirq = softirq * 1000 / clk_tck; | |
2712 | } | |
2713 | ||
2714 | if (i > 8) { | |
2715 | linuxcpustat->has_steal = true; | |
2716 | linuxcpustat->steal = steal * 1000 / clk_tck; | |
2717 | } | |
2718 | ||
2719 | if (i > 9) { | |
2720 | linuxcpustat->has_guest = true; | |
2721 | linuxcpustat->guest = guest * 1000 / clk_tck; | |
2722 | } | |
2723 | ||
2724 | if (i > 10) { | |
2725 | linuxcpustat->has_guest = true; | |
2726 | linuxcpustat->guest = guest * 1000 / clk_tck; | |
2727 | linuxcpustat->has_guestnice = true; | |
2728 | linuxcpustat->guestnice = guest_nice * 1000 / clk_tck; | |
2729 | } | |
2730 | ||
2731 | QAPI_LIST_APPEND(tail, cpustat); | |
2732 | } | |
2733 | ||
2734 | free(line); | |
2735 | fclose(fp); | |
2736 | return head; | |
2737 | } | |
2738 | ||
e72c3f2e MR |
2739 | #else /* defined(__linux__) */ |
2740 | ||
77dbc81b | 2741 | void qmp_guest_suspend_disk(Error **errp) |
e72c3f2e | 2742 | { |
c6bd8c70 | 2743 | error_setg(errp, QERR_UNSUPPORTED); |
e72c3f2e MR |
2744 | } |
2745 | ||
77dbc81b | 2746 | void qmp_guest_suspend_ram(Error **errp) |
e72c3f2e | 2747 | { |
c6bd8c70 | 2748 | error_setg(errp, QERR_UNSUPPORTED); |
e72c3f2e MR |
2749 | } |
2750 | ||
77dbc81b | 2751 | void qmp_guest_suspend_hybrid(Error **errp) |
e72c3f2e | 2752 | { |
c6bd8c70 | 2753 | error_setg(errp, QERR_UNSUPPORTED); |
e72c3f2e MR |
2754 | } |
2755 | ||
d2baff62 LE |
2756 | GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp) |
2757 | { | |
c6bd8c70 | 2758 | error_setg(errp, QERR_UNSUPPORTED); |
d2baff62 LE |
2759 | return NULL; |
2760 | } | |
2761 | ||
cbb65fc2 LE |
2762 | int64_t qmp_guest_set_vcpus(GuestLogicalProcessorList *vcpus, Error **errp) |
2763 | { | |
c6bd8c70 | 2764 | error_setg(errp, QERR_UNSUPPORTED); |
cbb65fc2 LE |
2765 | return -1; |
2766 | } | |
2767 | ||
215a2771 DB |
2768 | void qmp_guest_set_user_password(const char *username, |
2769 | const char *password, | |
2770 | bool crypted, | |
2771 | Error **errp) | |
2772 | { | |
c6bd8c70 | 2773 | error_setg(errp, QERR_UNSUPPORTED); |
215a2771 DB |
2774 | } |
2775 | ||
a065aaa9 HZ |
2776 | GuestMemoryBlockList *qmp_guest_get_memory_blocks(Error **errp) |
2777 | { | |
c6bd8c70 | 2778 | error_setg(errp, QERR_UNSUPPORTED); |
a065aaa9 HZ |
2779 | return NULL; |
2780 | } | |
2781 | ||
2782 | GuestMemoryBlockResponseList * | |
2783 | qmp_guest_set_memory_blocks(GuestMemoryBlockList *mem_blks, Error **errp) | |
2784 | { | |
c6bd8c70 | 2785 | error_setg(errp, QERR_UNSUPPORTED); |
a065aaa9 HZ |
2786 | return NULL; |
2787 | } | |
2788 | ||
2789 | GuestMemoryBlockInfo *qmp_guest_get_memory_block_info(Error **errp) | |
2790 | { | |
c6bd8c70 | 2791 | error_setg(errp, QERR_UNSUPPORTED); |
a065aaa9 HZ |
2792 | return NULL; |
2793 | } | |
2794 | ||
d35d4cb5 MR |
2795 | #endif |
2796 | ||
59e35c7b AD |
2797 | #ifdef HAVE_GETIFADDRS |
2798 | static GuestNetworkInterface * | |
2799 | guest_find_interface(GuestNetworkInterfaceList *head, | |
2800 | const char *name) | |
2801 | { | |
2802 | for (; head; head = head->next) { | |
2803 | if (strcmp(head->value->name, name) == 0) { | |
2804 | return head->value; | |
2805 | } | |
2806 | } | |
2807 | ||
2808 | return NULL; | |
2809 | } | |
2810 | ||
2811 | static int guest_get_network_stats(const char *name, | |
2812 | GuestNetworkInterfaceStat *stats) | |
2813 | { | |
70335c46 | 2814 | #ifdef CONFIG_LINUX |
59e35c7b AD |
2815 | int name_len; |
2816 | char const *devinfo = "/proc/net/dev"; | |
2817 | FILE *fp; | |
2818 | char *line = NULL, *colon; | |
2819 | size_t n = 0; | |
2820 | fp = fopen(devinfo, "r"); | |
2821 | if (!fp) { | |
a539dc8a AD |
2822 | g_debug("failed to open network stats %s: %s", devinfo, |
2823 | g_strerror(errno)); | |
59e35c7b AD |
2824 | return -1; |
2825 | } | |
2826 | name_len = strlen(name); | |
2827 | while (getline(&line, &n, fp) != -1) { | |
2828 | long long dummy; | |
2829 | long long rx_bytes; | |
2830 | long long rx_packets; | |
2831 | long long rx_errs; | |
2832 | long long rx_dropped; | |
2833 | long long tx_bytes; | |
2834 | long long tx_packets; | |
2835 | long long tx_errs; | |
2836 | long long tx_dropped; | |
2837 | char *trim_line; | |
2838 | trim_line = g_strchug(line); | |
2839 | if (trim_line[0] == '\0') { | |
2840 | continue; | |
2841 | } | |
2842 | colon = strchr(trim_line, ':'); | |
2843 | if (!colon) { | |
2844 | continue; | |
2845 | } | |
2846 | if (colon - name_len == trim_line && | |
2847 | strncmp(trim_line, name, name_len) == 0) { | |
2848 | if (sscanf(colon + 1, | |
2849 | "%lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld", | |
2850 | &rx_bytes, &rx_packets, &rx_errs, &rx_dropped, | |
2851 | &dummy, &dummy, &dummy, &dummy, | |
2852 | &tx_bytes, &tx_packets, &tx_errs, &tx_dropped, | |
2853 | &dummy, &dummy, &dummy, &dummy) != 16) { | |
2854 | continue; | |
2855 | } | |
2856 | stats->rx_bytes = rx_bytes; | |
2857 | stats->rx_packets = rx_packets; | |
2858 | stats->rx_errs = rx_errs; | |
2859 | stats->rx_dropped = rx_dropped; | |
2860 | stats->tx_bytes = tx_bytes; | |
2861 | stats->tx_packets = tx_packets; | |
2862 | stats->tx_errs = tx_errs; | |
2863 | stats->tx_dropped = tx_dropped; | |
2864 | fclose(fp); | |
2865 | g_free(line); | |
2866 | return 0; | |
2867 | } | |
2868 | } | |
2869 | fclose(fp); | |
2870 | g_free(line); | |
2871 | g_debug("/proc/net/dev: Interface '%s' not found", name); | |
a539dc8a AD |
2872 | #else /* !CONFIG_LINUX */ |
2873 | g_debug("Network stats reporting available only for Linux"); | |
2874 | #endif /* !CONFIG_LINUX */ | |
59e35c7b AD |
2875 | return -1; |
2876 | } | |
2877 | ||
2878 | /* | |
2879 | * Build information about guest interfaces | |
2880 | */ | |
2881 | GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp) | |
2882 | { | |
2883 | GuestNetworkInterfaceList *head = NULL, **tail = &head; | |
2884 | struct ifaddrs *ifap, *ifa; | |
2885 | ||
2886 | if (getifaddrs(&ifap) < 0) { | |
2887 | error_setg_errno(errp, errno, "getifaddrs failed"); | |
2888 | goto error; | |
2889 | } | |
2890 | ||
2891 | for (ifa = ifap; ifa; ifa = ifa->ifa_next) { | |
2892 | GuestNetworkInterface *info; | |
2893 | GuestIpAddressList **address_tail; | |
2894 | GuestIpAddress *address_item = NULL; | |
2895 | GuestNetworkInterfaceStat *interface_stat = NULL; | |
2896 | char addr4[INET_ADDRSTRLEN]; | |
2897 | char addr6[INET6_ADDRSTRLEN]; | |
2898 | int sock; | |
2899 | struct ifreq ifr; | |
2900 | unsigned char *mac_addr; | |
2901 | void *p; | |
2902 | ||
2903 | g_debug("Processing %s interface", ifa->ifa_name); | |
2904 | ||
2905 | info = guest_find_interface(head, ifa->ifa_name); | |
2906 | ||
2907 | if (!info) { | |
2908 | info = g_malloc0(sizeof(*info)); | |
2909 | info->name = g_strdup(ifa->ifa_name); | |
2910 | ||
2911 | QAPI_LIST_APPEND(tail, info); | |
2912 | } | |
2913 | ||
aec0730e | 2914 | if (!info->has_hardware_address) { |
59e35c7b AD |
2915 | /* we haven't obtained HW address yet */ |
2916 | sock = socket(PF_INET, SOCK_STREAM, 0); | |
2917 | if (sock == -1) { | |
2918 | error_setg_errno(errp, errno, "failed to create socket"); | |
2919 | goto error; | |
2920 | } | |
2921 | ||
2922 | memset(&ifr, 0, sizeof(ifr)); | |
2923 | pstrcpy(ifr.ifr_name, IF_NAMESIZE, info->name); | |
2924 | if (ioctl(sock, SIOCGIFHWADDR, &ifr) == -1) { | |
aec0730e AD |
2925 | /* |
2926 | * We can't get the hw addr of this interface, but that's not a | |
2927 | * fatal error. Don't set info->hardware_address, but keep | |
2928 | * going. | |
2929 | */ | |
2930 | if (errno == EADDRNOTAVAIL) { | |
2931 | /* The interface doesn't have a hw addr (e.g. loopback). */ | |
2932 | g_debug("failed to get MAC address of %s: %s", | |
2933 | ifa->ifa_name, strerror(errno)); | |
2934 | } else{ | |
2935 | g_warning("failed to get MAC address of %s: %s", | |
2936 | ifa->ifa_name, strerror(errno)); | |
2937 | } | |
59e35c7b | 2938 | |
aec0730e | 2939 | } else { |
70335c46 AD |
2940 | #ifdef CONFIG_SOLARIS |
2941 | mac_addr = (unsigned char *) &ifr.ifr_addr.sa_data; | |
2942 | #else | |
aec0730e | 2943 | mac_addr = (unsigned char *) &ifr.ifr_hwaddr.sa_data; |
70335c46 | 2944 | #endif |
aec0730e AD |
2945 | info->hardware_address = |
2946 | g_strdup_printf("%02x:%02x:%02x:%02x:%02x:%02x", | |
2947 | (int) mac_addr[0], (int) mac_addr[1], | |
2948 | (int) mac_addr[2], (int) mac_addr[3], | |
2949 | (int) mac_addr[4], (int) mac_addr[5]); | |
59e35c7b | 2950 | |
aec0730e AD |
2951 | info->has_hardware_address = true; |
2952 | } | |
2953 | close(sock); | |
59e35c7b AD |
2954 | } |
2955 | ||
2956 | if (ifa->ifa_addr && | |
2957 | ifa->ifa_addr->sa_family == AF_INET) { | |
2958 | /* interface with IPv4 address */ | |
2959 | p = &((struct sockaddr_in *)ifa->ifa_addr)->sin_addr; | |
2960 | if (!inet_ntop(AF_INET, p, addr4, sizeof(addr4))) { | |
2961 | error_setg_errno(errp, errno, "inet_ntop failed"); | |
2962 | goto error; | |
2963 | } | |
2964 | ||
2965 | address_item = g_malloc0(sizeof(*address_item)); | |
2966 | address_item->ip_address = g_strdup(addr4); | |
2967 | address_item->ip_address_type = GUEST_IP_ADDRESS_TYPE_IPV4; | |
2968 | ||
2969 | if (ifa->ifa_netmask) { | |
2970 | /* Count the number of set bits in netmask. | |
2971 | * This is safe as '1' and '0' cannot be shuffled in netmask. */ | |
2972 | p = &((struct sockaddr_in *)ifa->ifa_netmask)->sin_addr; | |
2973 | address_item->prefix = ctpop32(((uint32_t *) p)[0]); | |
2974 | } | |
2975 | } else if (ifa->ifa_addr && | |
2976 | ifa->ifa_addr->sa_family == AF_INET6) { | |
2977 | /* interface with IPv6 address */ | |
2978 | p = &((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_addr; | |
2979 | if (!inet_ntop(AF_INET6, p, addr6, sizeof(addr6))) { | |
2980 | error_setg_errno(errp, errno, "inet_ntop failed"); | |
2981 | goto error; | |
2982 | } | |
2983 | ||
2984 | address_item = g_malloc0(sizeof(*address_item)); | |
2985 | address_item->ip_address = g_strdup(addr6); | |
2986 | address_item->ip_address_type = GUEST_IP_ADDRESS_TYPE_IPV6; | |
2987 | ||
2988 | if (ifa->ifa_netmask) { | |
2989 | /* Count the number of set bits in netmask. | |
2990 | * This is safe as '1' and '0' cannot be shuffled in netmask. */ | |
2991 | p = &((struct sockaddr_in6 *)ifa->ifa_netmask)->sin6_addr; | |
2992 | address_item->prefix = | |
2993 | ctpop32(((uint32_t *) p)[0]) + | |
2994 | ctpop32(((uint32_t *) p)[1]) + | |
2995 | ctpop32(((uint32_t *) p)[2]) + | |
2996 | ctpop32(((uint32_t *) p)[3]); | |
2997 | } | |
2998 | } | |
2999 | ||
3000 | if (!address_item) { | |
3001 | continue; | |
3002 | } | |
3003 | ||
3004 | address_tail = &info->ip_addresses; | |
3005 | while (*address_tail) { | |
3006 | address_tail = &(*address_tail)->next; | |
3007 | } | |
3008 | QAPI_LIST_APPEND(address_tail, address_item); | |
3009 | ||
3010 | info->has_ip_addresses = true; | |
3011 | ||
3012 | if (!info->has_statistics) { | |
3013 | interface_stat = g_malloc0(sizeof(*interface_stat)); | |
3014 | if (guest_get_network_stats(info->name, interface_stat) == -1) { | |
3015 | info->has_statistics = false; | |
3016 | g_free(interface_stat); | |
3017 | } else { | |
3018 | info->statistics = interface_stat; | |
3019 | info->has_statistics = true; | |
3020 | } | |
3021 | } | |
3022 | } | |
3023 | ||
3024 | freeifaddrs(ifap); | |
3025 | return head; | |
3026 | ||
3027 | error: | |
3028 | freeifaddrs(ifap); | |
3029 | qapi_free_GuestNetworkInterfaceList(head); | |
3030 | return NULL; | |
3031 | } | |
3032 | ||
3033 | #else | |
3034 | ||
3035 | GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp) | |
3036 | { | |
3037 | error_setg(errp, QERR_UNSUPPORTED); | |
3038 | return NULL; | |
3039 | } | |
3040 | ||
3041 | #endif /* HAVE_GETIFADDRS */ | |
3042 | ||
d35d4cb5 MR |
3043 | #if !defined(CONFIG_FSFREEZE) |
3044 | ||
46d4c572 TS |
3045 | GuestFilesystemInfoList *qmp_guest_get_fsinfo(Error **errp) |
3046 | { | |
c6bd8c70 | 3047 | error_setg(errp, QERR_UNSUPPORTED); |
46d4c572 TS |
3048 | return NULL; |
3049 | } | |
3050 | ||
77dbc81b | 3051 | GuestFsfreezeStatus qmp_guest_fsfreeze_status(Error **errp) |
e72c3f2e | 3052 | { |
c6bd8c70 | 3053 | error_setg(errp, QERR_UNSUPPORTED); |
d35d4cb5 MR |
3054 | |
3055 | return 0; | |
e72c3f2e MR |
3056 | } |
3057 | ||
77dbc81b | 3058 | int64_t qmp_guest_fsfreeze_freeze(Error **errp) |
e72c3f2e | 3059 | { |
c6bd8c70 | 3060 | error_setg(errp, QERR_UNSUPPORTED); |
d35d4cb5 MR |
3061 | |
3062 | return 0; | |
e72c3f2e MR |
3063 | } |
3064 | ||
e99bce20 TS |
3065 | int64_t qmp_guest_fsfreeze_freeze_list(bool has_mountpoints, |
3066 | strList *mountpoints, | |
3067 | Error **errp) | |
3068 | { | |
c6bd8c70 | 3069 | error_setg(errp, QERR_UNSUPPORTED); |
e99bce20 TS |
3070 | |
3071 | return 0; | |
3072 | } | |
3073 | ||
77dbc81b | 3074 | int64_t qmp_guest_fsfreeze_thaw(Error **errp) |
e72c3f2e | 3075 | { |
c6bd8c70 | 3076 | error_setg(errp, QERR_UNSUPPORTED); |
d35d4cb5 MR |
3077 | |
3078 | return 0; | |
e72c3f2e | 3079 | } |
fed39564 TG |
3080 | |
3081 | GuestDiskInfoList *qmp_guest_get_disks(Error **errp) | |
3082 | { | |
3083 | error_setg(errp, QERR_UNSUPPORTED); | |
3084 | return NULL; | |
3085 | } | |
3086 | ||
3569664e | 3087 | GuestDiskStatsInfoList *qmp_guest_get_diskstats(Error **errp) |
3088 | { | |
3089 | error_setg(errp, QERR_UNSUPPORTED); | |
3090 | return NULL; | |
3091 | } | |
3092 | ||
1db8a0b0 ZP |
3093 | GuestCpuStatsList *qmp_guest_get_cpustats(Error **errp) |
3094 | { | |
3095 | error_setg(errp, QERR_UNSUPPORTED); | |
3096 | return NULL; | |
3097 | } | |
3569664e | 3098 | |
eab5fd59 PB |
3099 | #endif /* CONFIG_FSFREEZE */ |
3100 | ||
3101 | #if !defined(CONFIG_FSTRIM) | |
e82855d9 JO |
3102 | GuestFilesystemTrimResponse * |
3103 | qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **errp) | |
eab5fd59 | 3104 | { |
c6bd8c70 | 3105 | error_setg(errp, QERR_UNSUPPORTED); |
e82855d9 | 3106 | return NULL; |
eab5fd59 | 3107 | } |
e72c3f2e MR |
3108 | #endif |
3109 | ||
0e4ef702 TH |
3110 | /* add unsupported commands to the list of blocked RPCs */ |
3111 | GList *ga_command_init_blockedrpcs(GList *blockedrpcs) | |
1281c08a TS |
3112 | { |
3113 | #if !defined(__linux__) | |
3114 | { | |
3115 | const char *list[] = { | |
3116 | "guest-suspend-disk", "guest-suspend-ram", | |
59e35c7b | 3117 | "guest-suspend-hybrid", "guest-get-vcpus", "guest-set-vcpus", |
0dd38a03 | 3118 | "guest-get-memory-blocks", "guest-set-memory-blocks", |
28d8dd35 BS |
3119 | "guest-get-memory-block-size", "guest-get-memory-block-info", |
3120 | NULL}; | |
1281c08a TS |
3121 | char **p = (char **)list; |
3122 | ||
3123 | while (*p) { | |
0e4ef702 | 3124 | blockedrpcs = g_list_append(blockedrpcs, g_strdup(*p++)); |
1281c08a TS |
3125 | } |
3126 | } | |
3127 | #endif | |
3128 | ||
59e35c7b | 3129 | #if !defined(HAVE_GETIFADDRS) |
0e4ef702 | 3130 | blockedrpcs = g_list_append(blockedrpcs, |
59e35c7b AD |
3131 | g_strdup("guest-network-get-interfaces")); |
3132 | #endif | |
3133 | ||
1281c08a TS |
3134 | #if !defined(CONFIG_FSFREEZE) |
3135 | { | |
3136 | const char *list[] = { | |
3137 | "guest-get-fsinfo", "guest-fsfreeze-status", | |
3138 | "guest-fsfreeze-freeze", "guest-fsfreeze-freeze-list", | |
fed39564 TG |
3139 | "guest-fsfreeze-thaw", "guest-get-fsinfo", |
3140 | "guest-get-disks", NULL}; | |
1281c08a TS |
3141 | char **p = (char **)list; |
3142 | ||
3143 | while (*p) { | |
0e4ef702 | 3144 | blockedrpcs = g_list_append(blockedrpcs, g_strdup(*p++)); |
1281c08a TS |
3145 | } |
3146 | } | |
3147 | #endif | |
3148 | ||
3149 | #if !defined(CONFIG_FSTRIM) | |
0e4ef702 | 3150 | blockedrpcs = g_list_append(blockedrpcs, g_strdup("guest-fstrim")); |
1281c08a TS |
3151 | #endif |
3152 | ||
0e4ef702 | 3153 | blockedrpcs = g_list_append(blockedrpcs, g_strdup("guest-get-devices")); |
2e4211ce | 3154 | |
0e4ef702 | 3155 | return blockedrpcs; |
1281c08a TS |
3156 | } |
3157 | ||
e3d4d252 MR |
3158 | /* register init/cleanup routines for stateful command groups */ |
3159 | void ga_command_state_init(GAState *s, GACommandState *cs) | |
3160 | { | |
7006b9cf | 3161 | #if defined(CONFIG_FSFREEZE) |
f22d85e9 | 3162 | ga_command_state_add(cs, NULL, guest_fsfreeze_cleanup); |
7006b9cf | 3163 | #endif |
e3d4d252 | 3164 | } |
161a56a9 | 3165 | |
e674605f TG |
3166 | #ifdef HAVE_UTMPX |
3167 | ||
161a56a9 VF |
3168 | #define QGA_MICRO_SECOND_TO_SECOND 1000000 |
3169 | ||
3170 | static double ga_get_login_time(struct utmpx *user_info) | |
3171 | { | |
3172 | double seconds = (double)user_info->ut_tv.tv_sec; | |
3173 | double useconds = (double)user_info->ut_tv.tv_usec; | |
3174 | useconds /= QGA_MICRO_SECOND_TO_SECOND; | |
3175 | return seconds + useconds; | |
3176 | } | |
3177 | ||
b90abbac | 3178 | GuestUserList *qmp_guest_get_users(Error **errp) |
161a56a9 VF |
3179 | { |
3180 | GHashTable *cache = NULL; | |
95b3a8c8 | 3181 | GuestUserList *head = NULL, **tail = &head; |
161a56a9 VF |
3182 | struct utmpx *user_info = NULL; |
3183 | gpointer value = NULL; | |
3184 | GuestUser *user = NULL; | |
161a56a9 VF |
3185 | double login_time = 0; |
3186 | ||
3187 | cache = g_hash_table_new(g_str_hash, g_str_equal); | |
3188 | setutxent(); | |
3189 | ||
3190 | for (;;) { | |
3191 | user_info = getutxent(); | |
3192 | if (user_info == NULL) { | |
3193 | break; | |
3194 | } else if (user_info->ut_type != USER_PROCESS) { | |
3195 | continue; | |
3196 | } else if (g_hash_table_contains(cache, user_info->ut_user)) { | |
3197 | value = g_hash_table_lookup(cache, user_info->ut_user); | |
3198 | user = (GuestUser *)value; | |
3199 | login_time = ga_get_login_time(user_info); | |
3200 | /* We're ensuring the earliest login time to be sent */ | |
3201 | if (login_time < user->login_time) { | |
3202 | user->login_time = login_time; | |
3203 | } | |
3204 | continue; | |
3205 | } | |
3206 | ||
95b3a8c8 EB |
3207 | user = g_new0(GuestUser, 1); |
3208 | user->user = g_strdup(user_info->ut_user); | |
3209 | user->login_time = ga_get_login_time(user_info); | |
161a56a9 | 3210 | |
95b3a8c8 | 3211 | g_hash_table_insert(cache, user->user, user); |
161a56a9 | 3212 | |
95b3a8c8 | 3213 | QAPI_LIST_APPEND(tail, user); |
161a56a9 VF |
3214 | } |
3215 | endutxent(); | |
3216 | g_hash_table_destroy(cache); | |
3217 | return head; | |
3218 | } | |
e674605f TG |
3219 | |
3220 | #else | |
3221 | ||
3222 | GuestUserList *qmp_guest_get_users(Error **errp) | |
3223 | { | |
3224 | error_setg(errp, QERR_UNSUPPORTED); | |
3225 | return NULL; | |
3226 | } | |
3227 | ||
3228 | #endif | |
9848f797 TG |
3229 | |
3230 | /* Replace escaped special characters with theire real values. The replacement | |
3231 | * is done in place -- returned value is in the original string. | |
3232 | */ | |
3233 | static void ga_osrelease_replace_special(gchar *value) | |
3234 | { | |
3235 | gchar *p, *p2, quote; | |
3236 | ||
3237 | /* Trim the string at first space or semicolon if it is not enclosed in | |
3238 | * single or double quotes. */ | |
3239 | if ((value[0] != '"') || (value[0] == '\'')) { | |
3240 | p = strchr(value, ' '); | |
3241 | if (p != NULL) { | |
3242 | *p = 0; | |
3243 | } | |
3244 | p = strchr(value, ';'); | |
3245 | if (p != NULL) { | |
3246 | *p = 0; | |
3247 | } | |
3248 | return; | |
3249 | } | |
3250 | ||
3251 | quote = value[0]; | |
3252 | p2 = value; | |
3253 | p = value + 1; | |
3254 | while (*p != 0) { | |
3255 | if (*p == '\\') { | |
3256 | p++; | |
3257 | switch (*p) { | |
3258 | case '$': | |
3259 | case '\'': | |
3260 | case '"': | |
3261 | case '\\': | |
3262 | case '`': | |
3263 | break; | |
3264 | default: | |
3265 | /* Keep literal backslash followed by whatever is there */ | |
3266 | p--; | |
3267 | break; | |
3268 | } | |
3269 | } else if (*p == quote) { | |
3270 | *p2 = 0; | |
3271 | break; | |
3272 | } | |
3273 | *(p2++) = *(p++); | |
3274 | } | |
3275 | } | |
3276 | ||
3277 | static GKeyFile *ga_parse_osrelease(const char *fname) | |
3278 | { | |
3279 | gchar *content = NULL; | |
3280 | gchar *content2 = NULL; | |
3281 | GError *err = NULL; | |
3282 | GKeyFile *keys = g_key_file_new(); | |
3283 | const char *group = "[os-release]\n"; | |
3284 | ||
3285 | if (!g_file_get_contents(fname, &content, NULL, &err)) { | |
3286 | slog("failed to read '%s', error: %s", fname, err->message); | |
3287 | goto fail; | |
3288 | } | |
3289 | ||
3290 | if (!g_utf8_validate(content, -1, NULL)) { | |
3291 | slog("file is not utf-8 encoded: %s", fname); | |
3292 | goto fail; | |
3293 | } | |
3294 | content2 = g_strdup_printf("%s%s", group, content); | |
3295 | ||
3296 | if (!g_key_file_load_from_data(keys, content2, -1, G_KEY_FILE_NONE, | |
3297 | &err)) { | |
3298 | slog("failed to parse file '%s', error: %s", fname, err->message); | |
3299 | goto fail; | |
3300 | } | |
3301 | ||
3302 | g_free(content); | |
3303 | g_free(content2); | |
3304 | return keys; | |
3305 | ||
3306 | fail: | |
3307 | g_error_free(err); | |
3308 | g_free(content); | |
3309 | g_free(content2); | |
3310 | g_key_file_free(keys); | |
3311 | return NULL; | |
3312 | } | |
3313 | ||
3314 | GuestOSInfo *qmp_guest_get_osinfo(Error **errp) | |
3315 | { | |
3316 | GuestOSInfo *info = NULL; | |
3317 | struct utsname kinfo; | |
339ca68b TG |
3318 | GKeyFile *osrelease = NULL; |
3319 | const char *qga_os_release = g_getenv("QGA_OS_RELEASE"); | |
9848f797 TG |
3320 | |
3321 | info = g_new0(GuestOSInfo, 1); | |
3322 | ||
3323 | if (uname(&kinfo) != 0) { | |
3324 | error_setg_errno(errp, errno, "uname failed"); | |
3325 | } else { | |
3326 | info->has_kernel_version = true; | |
3327 | info->kernel_version = g_strdup(kinfo.version); | |
3328 | info->has_kernel_release = true; | |
3329 | info->kernel_release = g_strdup(kinfo.release); | |
3330 | info->has_machine = true; | |
3331 | info->machine = g_strdup(kinfo.machine); | |
3332 | } | |
3333 | ||
339ca68b TG |
3334 | if (qga_os_release != NULL) { |
3335 | osrelease = ga_parse_osrelease(qga_os_release); | |
3336 | } else { | |
3337 | osrelease = ga_parse_osrelease("/etc/os-release"); | |
3338 | if (osrelease == NULL) { | |
3339 | osrelease = ga_parse_osrelease("/usr/lib/os-release"); | |
3340 | } | |
9848f797 TG |
3341 | } |
3342 | ||
3343 | if (osrelease != NULL) { | |
3344 | char *value; | |
3345 | ||
3346 | #define GET_FIELD(field, osfield) do { \ | |
3347 | value = g_key_file_get_value(osrelease, "os-release", osfield, NULL); \ | |
3348 | if (value != NULL) { \ | |
3349 | ga_osrelease_replace_special(value); \ | |
3350 | info->has_ ## field = true; \ | |
3351 | info->field = value; \ | |
3352 | } \ | |
3353 | } while (0) | |
3354 | GET_FIELD(id, "ID"); | |
3355 | GET_FIELD(name, "NAME"); | |
3356 | GET_FIELD(pretty_name, "PRETTY_NAME"); | |
3357 | GET_FIELD(version, "VERSION"); | |
3358 | GET_FIELD(version_id, "VERSION_ID"); | |
3359 | GET_FIELD(variant, "VARIANT"); | |
3360 | GET_FIELD(variant_id, "VARIANT_ID"); | |
3361 | #undef GET_FIELD | |
3362 | ||
3363 | g_key_file_free(osrelease); | |
3364 | } | |
3365 | ||
3366 | return info; | |
3367 | } | |
2e4211ce TG |
3368 | |
3369 | GuestDeviceInfoList *qmp_guest_get_devices(Error **errp) | |
3370 | { | |
3371 | error_setg(errp, QERR_UNSUPPORTED); | |
3372 | ||
3373 | return NULL; | |
3374 | } | |
548fb0da MAL |
3375 | |
3376 | #ifndef HOST_NAME_MAX | |
3377 | # ifdef _POSIX_HOST_NAME_MAX | |
3378 | # define HOST_NAME_MAX _POSIX_HOST_NAME_MAX | |
3379 | # else | |
3380 | # define HOST_NAME_MAX 255 | |
3381 | # endif | |
3382 | #endif | |
3383 | ||
3384 | char *qga_get_host_name(Error **errp) | |
3385 | { | |
3386 | long len = -1; | |
3387 | g_autofree char *hostname = NULL; | |
3388 | ||
3389 | #ifdef _SC_HOST_NAME_MAX | |
3390 | len = sysconf(_SC_HOST_NAME_MAX); | |
3391 | #endif /* _SC_HOST_NAME_MAX */ | |
3392 | ||
3393 | if (len < 0) { | |
3394 | len = HOST_NAME_MAX; | |
3395 | } | |
3396 | ||
3397 | /* Unfortunately, gethostname() below does not guarantee a | |
3398 | * NULL terminated string. Therefore, allocate one byte more | |
3399 | * to be sure. */ | |
3400 | hostname = g_new0(char, len + 1); | |
3401 | ||
3402 | if (gethostname(hostname, len) < 0) { | |
3403 | error_setg_errno(errp, errno, | |
3404 | "cannot get hostname"); | |
3405 | return NULL; | |
3406 | } | |
3407 | ||
3408 | return g_steal_pointer(&hostname); | |
3409 | } |