1c216e5adSMichael Roth /* 2c216e5adSMichael Roth * QEMU Guest Agent POSIX-specific command implementations 3c216e5adSMichael Roth * 4c216e5adSMichael Roth * Copyright IBM Corp. 2011 5c216e5adSMichael Roth * 6c216e5adSMichael Roth * Authors: 7c216e5adSMichael Roth * Michael Roth <mdroth@linux.vnet.ibm.com> 83424fc9fSMichal Privoznik * Michal Privoznik <mprivozn@redhat.com> 9c216e5adSMichael Roth * 10c216e5adSMichael Roth * This work is licensed under the terms of the GNU GPL, version 2 or later. 11c216e5adSMichael Roth * See the COPYING file in the top-level directory. 12c216e5adSMichael Roth */ 13c216e5adSMichael Roth 14c216e5adSMichael Roth #include <glib.h> 15c216e5adSMichael Roth #include <sys/types.h> 16c216e5adSMichael Roth #include <sys/ioctl.h> 172c02cbf6SLuiz Capitulino #include <sys/wait.h> 18d2baff62SLaszlo Ersek #include <unistd.h> 19d2baff62SLaszlo Ersek #include <errno.h> 20d2baff62SLaszlo Ersek #include <fcntl.h> 2146d4c572STomoki Sekiyama #include <dirent.h> 22c689b4f1SLaszlo Ersek #include <stdio.h> 23c689b4f1SLaszlo Ersek #include <string.h> 24c689b4f1SLaszlo Ersek #include <sys/stat.h> 25d2baff62SLaszlo Ersek #include <inttypes.h> 26c216e5adSMichael Roth #include "qga/guest-agent-core.h" 27c216e5adSMichael Roth #include "qga-qmp-commands.h" 287b1b5d19SPaolo Bonzini #include "qapi/qmp/qerror.h" 291de7afc9SPaolo Bonzini #include "qemu/queue.h" 301de7afc9SPaolo Bonzini #include "qemu/host-utils.h" 31c216e5adSMichael Roth 322c02cbf6SLuiz Capitulino #ifndef CONFIG_HAS_ENVIRON 33eecae147SAndreas Färber #ifdef __APPLE__ 34eecae147SAndreas Färber #include <crt_externs.h> 35eecae147SAndreas Färber #define environ (*_NSGetEnviron()) 36eecae147SAndreas Färber #else 372c02cbf6SLuiz Capitulino extern char **environ; 382c02cbf6SLuiz Capitulino #endif 39eecae147SAndreas Färber #endif 402c02cbf6SLuiz Capitulino 41e72c3f2eSMichael Roth #if defined(__linux__) 42e72c3f2eSMichael Roth #include <mntent.h> 43e72c3f2eSMichael Roth #include <linux/fs.h> 44e72c3f2eSMichael Roth #include <ifaddrs.h> 45e72c3f2eSMichael Roth #include <arpa/inet.h> 46e72c3f2eSMichael Roth #include <sys/socket.h> 47e72c3f2eSMichael Roth #include <net/if.h> 48e72c3f2eSMichael Roth 49eab5fd59SPaolo Bonzini #ifdef FIFREEZE 50e72c3f2eSMichael Roth #define CONFIG_FSFREEZE 51e72c3f2eSMichael Roth #endif 52eab5fd59SPaolo Bonzini #ifdef FITRIM 53eab5fd59SPaolo Bonzini #define CONFIG_FSTRIM 54eab5fd59SPaolo Bonzini #endif 55e72c3f2eSMichael Roth #endif 56e72c3f2eSMichael Roth 5777dbc81bSMarkus Armbruster static void ga_wait_child(pid_t pid, int *status, Error **errp) 58d220a6dfSLuiz Capitulino { 59d220a6dfSLuiz Capitulino pid_t rpid; 60d220a6dfSLuiz Capitulino 61d220a6dfSLuiz Capitulino *status = 0; 62d220a6dfSLuiz Capitulino 63d220a6dfSLuiz Capitulino do { 64d220a6dfSLuiz Capitulino rpid = waitpid(pid, status, 0); 65d220a6dfSLuiz Capitulino } while (rpid == -1 && errno == EINTR); 66d220a6dfSLuiz Capitulino 67d220a6dfSLuiz Capitulino if (rpid == -1) { 6877dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to wait for child (pid: %d)", 6977dbc81bSMarkus Armbruster pid); 70d220a6dfSLuiz Capitulino return; 71d220a6dfSLuiz Capitulino } 72d220a6dfSLuiz Capitulino 73d220a6dfSLuiz Capitulino g_assert(rpid == pid); 74d220a6dfSLuiz Capitulino } 75d220a6dfSLuiz Capitulino 7677dbc81bSMarkus Armbruster void qmp_guest_shutdown(bool has_mode, const char *mode, Error **errp) 77c216e5adSMichael Roth { 78c216e5adSMichael Roth const char *shutdown_flag; 79d220a6dfSLuiz Capitulino Error *local_err = NULL; 80d220a6dfSLuiz Capitulino pid_t pid; 813674838cSLuiz Capitulino int status; 82c216e5adSMichael Roth 83c216e5adSMichael Roth slog("guest-shutdown called, mode: %s", mode); 84c216e5adSMichael Roth if (!has_mode || strcmp(mode, "powerdown") == 0) { 85c216e5adSMichael Roth shutdown_flag = "-P"; 86c216e5adSMichael Roth } else if (strcmp(mode, "halt") == 0) { 87c216e5adSMichael Roth shutdown_flag = "-H"; 88c216e5adSMichael Roth } else if (strcmp(mode, "reboot") == 0) { 89c216e5adSMichael Roth shutdown_flag = "-r"; 90c216e5adSMichael Roth } else { 9177dbc81bSMarkus Armbruster error_setg(errp, 92d220a6dfSLuiz Capitulino "mode is invalid (valid values are: halt|powerdown|reboot"); 93c216e5adSMichael Roth return; 94c216e5adSMichael Roth } 95c216e5adSMichael Roth 96d5dd3498SLuiz Capitulino pid = fork(); 97d5dd3498SLuiz Capitulino if (pid == 0) { 98c216e5adSMichael Roth /* child, start the shutdown */ 99c216e5adSMichael Roth setsid(); 1003674838cSLuiz Capitulino reopen_fd_to_null(0); 1013674838cSLuiz Capitulino reopen_fd_to_null(1); 1023674838cSLuiz Capitulino reopen_fd_to_null(2); 103c216e5adSMichael Roth 104485e741cSwhitearchey execle("/sbin/shutdown", "shutdown", "-h", shutdown_flag, "+0", 1053674838cSLuiz Capitulino "hypervisor initiated shutdown", (char*)NULL, environ); 1063674838cSLuiz Capitulino _exit(EXIT_FAILURE); 107d5dd3498SLuiz Capitulino } else if (pid < 0) { 10877dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to create child process"); 109d5dd3498SLuiz Capitulino return; 110d5dd3498SLuiz Capitulino } 111d5dd3498SLuiz Capitulino 112d220a6dfSLuiz Capitulino ga_wait_child(pid, &status, &local_err); 11384d18f06SMarkus Armbruster if (local_err) { 11477dbc81bSMarkus Armbruster error_propagate(errp, local_err); 115d220a6dfSLuiz Capitulino return; 116d220a6dfSLuiz Capitulino } 117d220a6dfSLuiz Capitulino 118d220a6dfSLuiz Capitulino if (!WIFEXITED(status)) { 11977dbc81bSMarkus Armbruster error_setg(errp, "child process has terminated abnormally"); 120d220a6dfSLuiz Capitulino return; 121d220a6dfSLuiz Capitulino } 122d220a6dfSLuiz Capitulino 123d220a6dfSLuiz Capitulino if (WEXITSTATUS(status)) { 12477dbc81bSMarkus Armbruster error_setg(errp, "child process has failed to shutdown"); 125d220a6dfSLuiz Capitulino return; 126d220a6dfSLuiz Capitulino } 127d220a6dfSLuiz Capitulino 128085d8134SPeter Maydell /* succeeded */ 129c216e5adSMichael Roth } 130c216e5adSMichael Roth 1316912e6a9SLei Li int64_t qmp_guest_get_time(Error **errp) 1326912e6a9SLei Li { 1336912e6a9SLei Li int ret; 1346912e6a9SLei Li qemu_timeval tq; 1356912e6a9SLei Li int64_t time_ns; 1366912e6a9SLei Li 1376912e6a9SLei Li ret = qemu_gettimeofday(&tq); 1386912e6a9SLei Li if (ret < 0) { 1396912e6a9SLei Li error_setg_errno(errp, errno, "Failed to get time"); 1406912e6a9SLei Li return -1; 1416912e6a9SLei Li } 1426912e6a9SLei Li 1436912e6a9SLei Li time_ns = tq.tv_sec * 1000000000LL + tq.tv_usec * 1000; 1446912e6a9SLei Li return time_ns; 1456912e6a9SLei Li } 1466912e6a9SLei Li 1472c958923SMichal Privoznik void qmp_guest_set_time(bool has_time, int64_t time_ns, Error **errp) 148a1bca57fSLei Li { 149a1bca57fSLei Li int ret; 150a1bca57fSLei Li int status; 151a1bca57fSLei Li pid_t pid; 152a1bca57fSLei Li Error *local_err = NULL; 153a1bca57fSLei Li struct timeval tv; 154a1bca57fSLei Li 1552c958923SMichal Privoznik /* If user has passed a time, validate and set it. */ 1562c958923SMichal Privoznik if (has_time) { 15700d2f370SMarc-André Lureau GDate date = { 0, }; 15800d2f370SMarc-André Lureau 159a1bca57fSLei Li /* year-2038 will overflow in case time_t is 32bit */ 160a1bca57fSLei Li if (time_ns / 1000000000 != (time_t)(time_ns / 1000000000)) { 161a1bca57fSLei Li error_setg(errp, "Time %" PRId64 " is too large", time_ns); 162a1bca57fSLei Li return; 163a1bca57fSLei Li } 164a1bca57fSLei Li 165a1bca57fSLei Li tv.tv_sec = time_ns / 1000000000; 166a1bca57fSLei Li tv.tv_usec = (time_ns % 1000000000) / 1000; 16700d2f370SMarc-André Lureau g_date_set_time_t(&date, tv.tv_sec); 16800d2f370SMarc-André Lureau if (date.year < 1970 || date.year >= 2070) { 16900d2f370SMarc-André Lureau error_setg_errno(errp, errno, "Invalid time"); 17000d2f370SMarc-André Lureau return; 17100d2f370SMarc-André Lureau } 172a1bca57fSLei Li 173a1bca57fSLei Li ret = settimeofday(&tv, NULL); 174a1bca57fSLei Li if (ret < 0) { 175a1bca57fSLei Li error_setg_errno(errp, errno, "Failed to set time to guest"); 176a1bca57fSLei Li return; 177a1bca57fSLei Li } 1782c958923SMichal Privoznik } 179a1bca57fSLei Li 1802c958923SMichal Privoznik /* Now, if user has passed a time to set and the system time is set, we 1812c958923SMichal Privoznik * just need to synchronize the hardware clock. However, if no time was 1822c958923SMichal Privoznik * passed, user is requesting the opposite: set the system time from the 1831634df56SAmos Kong * hardware clock (RTC). */ 184a1bca57fSLei Li pid = fork(); 185a1bca57fSLei Li if (pid == 0) { 186a1bca57fSLei Li setsid(); 187a1bca57fSLei Li reopen_fd_to_null(0); 188a1bca57fSLei Li reopen_fd_to_null(1); 189a1bca57fSLei Li reopen_fd_to_null(2); 190a1bca57fSLei Li 1912c958923SMichal Privoznik /* Use '/sbin/hwclock -w' to set RTC from the system time, 1922c958923SMichal Privoznik * or '/sbin/hwclock -s' to set the system time from RTC. */ 1932c958923SMichal Privoznik execle("/sbin/hwclock", "hwclock", has_time ? "-w" : "-s", 1942c958923SMichal Privoznik NULL, environ); 195a1bca57fSLei Li _exit(EXIT_FAILURE); 196a1bca57fSLei Li } else if (pid < 0) { 197a1bca57fSLei Li error_setg_errno(errp, errno, "failed to create child process"); 198a1bca57fSLei Li return; 199a1bca57fSLei Li } 200a1bca57fSLei Li 201a1bca57fSLei Li ga_wait_child(pid, &status, &local_err); 20284d18f06SMarkus Armbruster if (local_err) { 203a1bca57fSLei Li error_propagate(errp, local_err); 204a1bca57fSLei Li return; 205a1bca57fSLei Li } 206a1bca57fSLei Li 207a1bca57fSLei Li if (!WIFEXITED(status)) { 208a1bca57fSLei Li error_setg(errp, "child process has terminated abnormally"); 209a1bca57fSLei Li return; 210a1bca57fSLei Li } 211a1bca57fSLei Li 212a1bca57fSLei Li if (WEXITSTATUS(status)) { 213a1bca57fSLei Li error_setg(errp, "hwclock failed to set hardware clock to system time"); 214a1bca57fSLei Li return; 215a1bca57fSLei Li } 216a1bca57fSLei Li } 217a1bca57fSLei Li 218c216e5adSMichael Roth typedef struct GuestFileHandle { 219c216e5adSMichael Roth uint64_t id; 220c216e5adSMichael Roth FILE *fh; 221c216e5adSMichael Roth QTAILQ_ENTRY(GuestFileHandle) next; 222c216e5adSMichael Roth } GuestFileHandle; 223c216e5adSMichael Roth 224c216e5adSMichael Roth static struct { 225c216e5adSMichael Roth QTAILQ_HEAD(, GuestFileHandle) filehandles; 226c216e5adSMichael Roth } guest_file_state; 227c216e5adSMichael Roth 22839097dafSMichael Roth static int64_t guest_file_handle_add(FILE *fh, Error **errp) 229c216e5adSMichael Roth { 230c216e5adSMichael Roth GuestFileHandle *gfh; 23139097dafSMichael Roth int64_t handle; 23239097dafSMichael Roth 23339097dafSMichael Roth handle = ga_get_fd_handle(ga_state, errp); 234a903f40cSMarkus Armbruster if (handle < 0) { 235a903f40cSMarkus Armbruster return -1; 23639097dafSMichael Roth } 237c216e5adSMichael Roth 238f3a06403SMarkus Armbruster gfh = g_new0(GuestFileHandle, 1); 23939097dafSMichael Roth gfh->id = handle; 240c216e5adSMichael Roth gfh->fh = fh; 241c216e5adSMichael Roth QTAILQ_INSERT_TAIL(&guest_file_state.filehandles, gfh, next); 24239097dafSMichael Roth 24339097dafSMichael Roth return handle; 244c216e5adSMichael Roth } 245c216e5adSMichael Roth 24677dbc81bSMarkus Armbruster static GuestFileHandle *guest_file_handle_find(int64_t id, Error **errp) 247c216e5adSMichael Roth { 248c216e5adSMichael Roth GuestFileHandle *gfh; 249c216e5adSMichael Roth 250c216e5adSMichael Roth QTAILQ_FOREACH(gfh, &guest_file_state.filehandles, next) 251c216e5adSMichael Roth { 252c216e5adSMichael Roth if (gfh->id == id) { 253c216e5adSMichael Roth return gfh; 254c216e5adSMichael Roth } 255c216e5adSMichael Roth } 256c216e5adSMichael Roth 25777dbc81bSMarkus Armbruster error_setg(errp, "handle '%" PRId64 "' has not been found", id); 258c216e5adSMichael Roth return NULL; 259c216e5adSMichael Roth } 260c216e5adSMichael Roth 261c689b4f1SLaszlo Ersek typedef const char * const ccpc; 262c689b4f1SLaszlo Ersek 2638fe6bbcaSLaszlo Ersek #ifndef O_BINARY 2648fe6bbcaSLaszlo Ersek #define O_BINARY 0 2658fe6bbcaSLaszlo Ersek #endif 2668fe6bbcaSLaszlo Ersek 267c689b4f1SLaszlo Ersek /* http://pubs.opengroup.org/onlinepubs/9699919799/functions/fopen.html */ 268c689b4f1SLaszlo Ersek static const struct { 269c689b4f1SLaszlo Ersek ccpc *forms; 270c689b4f1SLaszlo Ersek int oflag_base; 271c689b4f1SLaszlo Ersek } guest_file_open_modes[] = { 2728fe6bbcaSLaszlo Ersek { (ccpc[]){ "r", NULL }, O_RDONLY }, 2738fe6bbcaSLaszlo Ersek { (ccpc[]){ "rb", NULL }, O_RDONLY | O_BINARY }, 2748fe6bbcaSLaszlo Ersek { (ccpc[]){ "w", NULL }, O_WRONLY | O_CREAT | O_TRUNC }, 2758fe6bbcaSLaszlo Ersek { (ccpc[]){ "wb", NULL }, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY }, 2768fe6bbcaSLaszlo Ersek { (ccpc[]){ "a", NULL }, O_WRONLY | O_CREAT | O_APPEND }, 2778fe6bbcaSLaszlo Ersek { (ccpc[]){ "ab", NULL }, O_WRONLY | O_CREAT | O_APPEND | O_BINARY }, 2788fe6bbcaSLaszlo Ersek { (ccpc[]){ "r+", NULL }, O_RDWR }, 2798fe6bbcaSLaszlo Ersek { (ccpc[]){ "rb+", "r+b", NULL }, O_RDWR | O_BINARY }, 2808fe6bbcaSLaszlo Ersek { (ccpc[]){ "w+", NULL }, O_RDWR | O_CREAT | O_TRUNC }, 2818fe6bbcaSLaszlo Ersek { (ccpc[]){ "wb+", "w+b", NULL }, O_RDWR | O_CREAT | O_TRUNC | O_BINARY }, 2828fe6bbcaSLaszlo Ersek { (ccpc[]){ "a+", NULL }, O_RDWR | O_CREAT | O_APPEND }, 2838fe6bbcaSLaszlo Ersek { (ccpc[]){ "ab+", "a+b", NULL }, O_RDWR | O_CREAT | O_APPEND | O_BINARY } 284c689b4f1SLaszlo Ersek }; 285c689b4f1SLaszlo Ersek 286c689b4f1SLaszlo Ersek static int 28777dbc81bSMarkus Armbruster find_open_flag(const char *mode_str, Error **errp) 288c689b4f1SLaszlo Ersek { 289c689b4f1SLaszlo Ersek unsigned mode; 290c689b4f1SLaszlo Ersek 291c689b4f1SLaszlo Ersek for (mode = 0; mode < ARRAY_SIZE(guest_file_open_modes); ++mode) { 292c689b4f1SLaszlo Ersek ccpc *form; 293c689b4f1SLaszlo Ersek 294c689b4f1SLaszlo Ersek form = guest_file_open_modes[mode].forms; 295c689b4f1SLaszlo Ersek while (*form != NULL && strcmp(*form, mode_str) != 0) { 296c689b4f1SLaszlo Ersek ++form; 297c689b4f1SLaszlo Ersek } 298c689b4f1SLaszlo Ersek if (*form != NULL) { 299c689b4f1SLaszlo Ersek break; 300c689b4f1SLaszlo Ersek } 301c689b4f1SLaszlo Ersek } 302c689b4f1SLaszlo Ersek 303c689b4f1SLaszlo Ersek if (mode == ARRAY_SIZE(guest_file_open_modes)) { 30477dbc81bSMarkus Armbruster error_setg(errp, "invalid file open mode '%s'", mode_str); 305c689b4f1SLaszlo Ersek return -1; 306c689b4f1SLaszlo Ersek } 307c689b4f1SLaszlo Ersek return guest_file_open_modes[mode].oflag_base | O_NOCTTY | O_NONBLOCK; 308c689b4f1SLaszlo Ersek } 309c689b4f1SLaszlo Ersek 310c689b4f1SLaszlo Ersek #define DEFAULT_NEW_FILE_MODE (S_IRUSR | S_IWUSR | \ 311c689b4f1SLaszlo Ersek S_IRGRP | S_IWGRP | \ 312c689b4f1SLaszlo Ersek S_IROTH | S_IWOTH) 313c689b4f1SLaszlo Ersek 314c689b4f1SLaszlo Ersek static FILE * 31577dbc81bSMarkus Armbruster safe_open_or_create(const char *path, const char *mode, Error **errp) 316c689b4f1SLaszlo Ersek { 317c689b4f1SLaszlo Ersek Error *local_err = NULL; 318c689b4f1SLaszlo Ersek int oflag; 319c689b4f1SLaszlo Ersek 320c689b4f1SLaszlo Ersek oflag = find_open_flag(mode, &local_err); 321c689b4f1SLaszlo Ersek if (local_err == NULL) { 322c689b4f1SLaszlo Ersek int fd; 323c689b4f1SLaszlo Ersek 324c689b4f1SLaszlo Ersek /* If the caller wants / allows creation of a new file, we implement it 325c689b4f1SLaszlo Ersek * with a two step process: open() + (open() / fchmod()). 326c689b4f1SLaszlo Ersek * 327c689b4f1SLaszlo Ersek * First we insist on creating the file exclusively as a new file. If 328c689b4f1SLaszlo Ersek * that succeeds, we're free to set any file-mode bits on it. (The 329c689b4f1SLaszlo Ersek * motivation is that we want to set those file-mode bits independently 330c689b4f1SLaszlo Ersek * of the current umask.) 331c689b4f1SLaszlo Ersek * 332c689b4f1SLaszlo Ersek * If the exclusive creation fails because the file already exists 333c689b4f1SLaszlo Ersek * (EEXIST is not possible for any other reason), we just attempt to 334c689b4f1SLaszlo Ersek * open the file, but in this case we won't be allowed to change the 335c689b4f1SLaszlo Ersek * file-mode bits on the preexistent file. 336c689b4f1SLaszlo Ersek * 337c689b4f1SLaszlo Ersek * The pathname should never disappear between the two open()s in 338c689b4f1SLaszlo Ersek * practice. If it happens, then someone very likely tried to race us. 339c689b4f1SLaszlo Ersek * In this case just go ahead and report the ENOENT from the second 340c689b4f1SLaszlo Ersek * open() to the caller. 341c689b4f1SLaszlo Ersek * 342c689b4f1SLaszlo Ersek * If the caller wants to open a preexistent file, then the first 343c689b4f1SLaszlo Ersek * open() is decisive and its third argument is ignored, and the second 344c689b4f1SLaszlo Ersek * open() and the fchmod() are never called. 345c689b4f1SLaszlo Ersek */ 346c689b4f1SLaszlo Ersek fd = open(path, oflag | ((oflag & O_CREAT) ? O_EXCL : 0), 0); 347c689b4f1SLaszlo Ersek if (fd == -1 && errno == EEXIST) { 348c689b4f1SLaszlo Ersek oflag &= ~(unsigned)O_CREAT; 349c689b4f1SLaszlo Ersek fd = open(path, oflag); 350c689b4f1SLaszlo Ersek } 351c689b4f1SLaszlo Ersek 352c689b4f1SLaszlo Ersek if (fd == -1) { 353c689b4f1SLaszlo Ersek error_setg_errno(&local_err, errno, "failed to open file '%s' " 354c689b4f1SLaszlo Ersek "(mode: '%s')", path, mode); 355c689b4f1SLaszlo Ersek } else { 356c689b4f1SLaszlo Ersek qemu_set_cloexec(fd); 357c689b4f1SLaszlo Ersek 358c689b4f1SLaszlo Ersek if ((oflag & O_CREAT) && fchmod(fd, DEFAULT_NEW_FILE_MODE) == -1) { 359c689b4f1SLaszlo Ersek error_setg_errno(&local_err, errno, "failed to set permission " 360c689b4f1SLaszlo Ersek "0%03o on new file '%s' (mode: '%s')", 361c689b4f1SLaszlo Ersek (unsigned)DEFAULT_NEW_FILE_MODE, path, mode); 362c689b4f1SLaszlo Ersek } else { 363c689b4f1SLaszlo Ersek FILE *f; 364c689b4f1SLaszlo Ersek 365c689b4f1SLaszlo Ersek f = fdopen(fd, mode); 366c689b4f1SLaszlo Ersek if (f == NULL) { 367c689b4f1SLaszlo Ersek error_setg_errno(&local_err, errno, "failed to associate " 368c689b4f1SLaszlo Ersek "stdio stream with file descriptor %d, " 369c689b4f1SLaszlo Ersek "file '%s' (mode: '%s')", fd, path, mode); 370c689b4f1SLaszlo Ersek } else { 371c689b4f1SLaszlo Ersek return f; 372c689b4f1SLaszlo Ersek } 373c689b4f1SLaszlo Ersek } 374c689b4f1SLaszlo Ersek 375c689b4f1SLaszlo Ersek close(fd); 3762b720018SLaszlo Ersek if (oflag & O_CREAT) { 3772b720018SLaszlo Ersek unlink(path); 3782b720018SLaszlo Ersek } 379c689b4f1SLaszlo Ersek } 380c689b4f1SLaszlo Ersek } 381c689b4f1SLaszlo Ersek 38277dbc81bSMarkus Armbruster error_propagate(errp, local_err); 383c689b4f1SLaszlo Ersek return NULL; 384c689b4f1SLaszlo Ersek } 385c689b4f1SLaszlo Ersek 38685b6f6f5SSimon Zolin static int guest_file_toggle_flags(int fd, int flags, bool set, Error **err) 38785b6f6f5SSimon Zolin { 38885b6f6f5SSimon Zolin int ret, old_flags; 38985b6f6f5SSimon Zolin 39085b6f6f5SSimon Zolin old_flags = fcntl(fd, F_GETFL); 39185b6f6f5SSimon Zolin if (old_flags == -1) { 392c6bd8c70SMarkus Armbruster error_setg_errno(err, errno, QERR_QGA_COMMAND_FAILED, 39385b6f6f5SSimon Zolin "failed to fetch filehandle flags"); 39485b6f6f5SSimon Zolin return -1; 39585b6f6f5SSimon Zolin } 39685b6f6f5SSimon Zolin 39785b6f6f5SSimon Zolin ret = fcntl(fd, F_SETFL, set ? (old_flags | flags) : (old_flags & ~flags)); 39885b6f6f5SSimon Zolin if (ret == -1) { 399c6bd8c70SMarkus Armbruster error_setg_errno(err, errno, QERR_QGA_COMMAND_FAILED, 40085b6f6f5SSimon Zolin "failed to set filehandle flags"); 40185b6f6f5SSimon Zolin return -1; 40285b6f6f5SSimon Zolin } 40385b6f6f5SSimon Zolin 40485b6f6f5SSimon Zolin return ret; 40585b6f6f5SSimon Zolin } 40685b6f6f5SSimon Zolin 40777dbc81bSMarkus Armbruster int64_t qmp_guest_file_open(const char *path, bool has_mode, const char *mode, 40877dbc81bSMarkus Armbruster Error **errp) 409c216e5adSMichael Roth { 410c216e5adSMichael Roth FILE *fh; 411c689b4f1SLaszlo Ersek Error *local_err = NULL; 41285b6f6f5SSimon Zolin int64_t handle; 413c216e5adSMichael Roth 414c216e5adSMichael Roth if (!has_mode) { 415c216e5adSMichael Roth mode = "r"; 416c216e5adSMichael Roth } 417c216e5adSMichael Roth slog("guest-file-open called, filepath: %s, mode: %s", path, mode); 418c689b4f1SLaszlo Ersek fh = safe_open_or_create(path, mode, &local_err); 419c689b4f1SLaszlo Ersek if (local_err != NULL) { 42077dbc81bSMarkus Armbruster error_propagate(errp, local_err); 421c216e5adSMichael Roth return -1; 422c216e5adSMichael Roth } 423c216e5adSMichael Roth 424c216e5adSMichael Roth /* set fd non-blocking to avoid common use cases (like reading from a 425c216e5adSMichael Roth * named pipe) from hanging the agent 426c216e5adSMichael Roth */ 42785b6f6f5SSimon Zolin if (guest_file_toggle_flags(fileno(fh), O_NONBLOCK, true, errp) < 0) { 428c216e5adSMichael Roth fclose(fh); 429c216e5adSMichael Roth return -1; 430c216e5adSMichael Roth } 431c216e5adSMichael Roth 43277dbc81bSMarkus Armbruster handle = guest_file_handle_add(fh, errp); 433a903f40cSMarkus Armbruster if (handle < 0) { 43439097dafSMichael Roth fclose(fh); 43539097dafSMichael Roth return -1; 43639097dafSMichael Roth } 43739097dafSMichael Roth 438d607a523SStefan Weil slog("guest-file-open, handle: %" PRId64, handle); 43939097dafSMichael Roth return handle; 440c216e5adSMichael Roth } 441c216e5adSMichael Roth 44277dbc81bSMarkus Armbruster void qmp_guest_file_close(int64_t handle, Error **errp) 443c216e5adSMichael Roth { 44477dbc81bSMarkus Armbruster GuestFileHandle *gfh = guest_file_handle_find(handle, errp); 445c216e5adSMichael Roth int ret; 446c216e5adSMichael Roth 447d607a523SStefan Weil slog("guest-file-close called, handle: %" PRId64, handle); 448c216e5adSMichael Roth if (!gfh) { 449c216e5adSMichael Roth return; 450c216e5adSMichael Roth } 451c216e5adSMichael Roth 452c216e5adSMichael Roth ret = fclose(gfh->fh); 4533ac4b7c5SLuiz Capitulino if (ret == EOF) { 45477dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to close handle"); 455c216e5adSMichael Roth return; 456c216e5adSMichael Roth } 457c216e5adSMichael Roth 458c216e5adSMichael Roth QTAILQ_REMOVE(&guest_file_state.filehandles, gfh, next); 459c216e5adSMichael Roth g_free(gfh); 460c216e5adSMichael Roth } 461c216e5adSMichael Roth 462c216e5adSMichael Roth struct GuestFileRead *qmp_guest_file_read(int64_t handle, bool has_count, 46377dbc81bSMarkus Armbruster int64_t count, Error **errp) 464c216e5adSMichael Roth { 46577dbc81bSMarkus Armbruster GuestFileHandle *gfh = guest_file_handle_find(handle, errp); 466c216e5adSMichael Roth GuestFileRead *read_data = NULL; 467c216e5adSMichael Roth guchar *buf; 468c216e5adSMichael Roth FILE *fh; 469c216e5adSMichael Roth size_t read_count; 470c216e5adSMichael Roth 471c216e5adSMichael Roth if (!gfh) { 472c216e5adSMichael Roth return NULL; 473c216e5adSMichael Roth } 474c216e5adSMichael Roth 475c216e5adSMichael Roth if (!has_count) { 476c216e5adSMichael Roth count = QGA_READ_COUNT_DEFAULT; 477c216e5adSMichael Roth } else if (count < 0) { 47877dbc81bSMarkus Armbruster error_setg(errp, "value '%" PRId64 "' is invalid for argument count", 479db3edb66SLuiz Capitulino count); 480c216e5adSMichael Roth return NULL; 481c216e5adSMichael Roth } 482c216e5adSMichael Roth 483c216e5adSMichael Roth fh = gfh->fh; 484c216e5adSMichael Roth buf = g_malloc0(count+1); 485c216e5adSMichael Roth read_count = fread(buf, 1, count, fh); 486c216e5adSMichael Roth if (ferror(fh)) { 48777dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to read file"); 488d607a523SStefan Weil slog("guest-file-read failed, handle: %" PRId64, handle); 489c216e5adSMichael Roth } else { 490c216e5adSMichael Roth buf[read_count] = 0; 491f3a06403SMarkus Armbruster read_data = g_new0(GuestFileRead, 1); 492c216e5adSMichael Roth read_data->count = read_count; 493c216e5adSMichael Roth read_data->eof = feof(fh); 494c216e5adSMichael Roth if (read_count) { 495c216e5adSMichael Roth read_data->buf_b64 = g_base64_encode(buf, read_count); 496c216e5adSMichael Roth } 497c216e5adSMichael Roth } 498c216e5adSMichael Roth g_free(buf); 499c216e5adSMichael Roth clearerr(fh); 500c216e5adSMichael Roth 501c216e5adSMichael Roth return read_data; 502c216e5adSMichael Roth } 503c216e5adSMichael Roth 504c216e5adSMichael Roth GuestFileWrite *qmp_guest_file_write(int64_t handle, const char *buf_b64, 50577dbc81bSMarkus Armbruster bool has_count, int64_t count, 50677dbc81bSMarkus Armbruster Error **errp) 507c216e5adSMichael Roth { 508c216e5adSMichael Roth GuestFileWrite *write_data = NULL; 509c216e5adSMichael Roth guchar *buf; 510c216e5adSMichael Roth gsize buf_len; 511c216e5adSMichael Roth int write_count; 51277dbc81bSMarkus Armbruster GuestFileHandle *gfh = guest_file_handle_find(handle, errp); 513c216e5adSMichael Roth FILE *fh; 514c216e5adSMichael Roth 515c216e5adSMichael Roth if (!gfh) { 516c216e5adSMichael Roth return NULL; 517c216e5adSMichael Roth } 518c216e5adSMichael Roth 519c216e5adSMichael Roth fh = gfh->fh; 520c216e5adSMichael Roth buf = g_base64_decode(buf_b64, &buf_len); 521c216e5adSMichael Roth 522c216e5adSMichael Roth if (!has_count) { 523c216e5adSMichael Roth count = buf_len; 524c216e5adSMichael Roth } else if (count < 0 || count > buf_len) { 52577dbc81bSMarkus Armbruster error_setg(errp, "value '%" PRId64 "' is invalid for argument count", 526db3edb66SLuiz Capitulino count); 527c216e5adSMichael Roth g_free(buf); 528c216e5adSMichael Roth return NULL; 529c216e5adSMichael Roth } 530c216e5adSMichael Roth 531c216e5adSMichael Roth write_count = fwrite(buf, 1, count, fh); 532c216e5adSMichael Roth if (ferror(fh)) { 53377dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to write to file"); 534d607a523SStefan Weil slog("guest-file-write failed, handle: %" PRId64, handle); 535c216e5adSMichael Roth } else { 536f3a06403SMarkus Armbruster write_data = g_new0(GuestFileWrite, 1); 537c216e5adSMichael Roth write_data->count = write_count; 538c216e5adSMichael Roth write_data->eof = feof(fh); 539c216e5adSMichael Roth } 540c216e5adSMichael Roth g_free(buf); 541c216e5adSMichael Roth clearerr(fh); 542c216e5adSMichael Roth 543c216e5adSMichael Roth return write_data; 544c216e5adSMichael Roth } 545c216e5adSMichael Roth 546c216e5adSMichael Roth struct GuestFileSeek *qmp_guest_file_seek(int64_t handle, int64_t offset, 54777dbc81bSMarkus Armbruster int64_t whence, Error **errp) 548c216e5adSMichael Roth { 54977dbc81bSMarkus Armbruster GuestFileHandle *gfh = guest_file_handle_find(handle, errp); 550c216e5adSMichael Roth GuestFileSeek *seek_data = NULL; 551c216e5adSMichael Roth FILE *fh; 552c216e5adSMichael Roth int ret; 553c216e5adSMichael Roth 554c216e5adSMichael Roth if (!gfh) { 555c216e5adSMichael Roth return NULL; 556c216e5adSMichael Roth } 557c216e5adSMichael Roth 558c216e5adSMichael Roth fh = gfh->fh; 559c216e5adSMichael Roth ret = fseek(fh, offset, whence); 560c216e5adSMichael Roth if (ret == -1) { 56177dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to seek file"); 562c216e5adSMichael Roth } else { 56310b7c5ddSMarkus Armbruster seek_data = g_new0(GuestFileSeek, 1); 564c216e5adSMichael Roth seek_data->position = ftell(fh); 565c216e5adSMichael Roth seek_data->eof = feof(fh); 566c216e5adSMichael Roth } 567c216e5adSMichael Roth clearerr(fh); 568c216e5adSMichael Roth 569c216e5adSMichael Roth return seek_data; 570c216e5adSMichael Roth } 571c216e5adSMichael Roth 57277dbc81bSMarkus Armbruster void qmp_guest_file_flush(int64_t handle, Error **errp) 573c216e5adSMichael Roth { 57477dbc81bSMarkus Armbruster GuestFileHandle *gfh = guest_file_handle_find(handle, errp); 575c216e5adSMichael Roth FILE *fh; 576c216e5adSMichael Roth int ret; 577c216e5adSMichael Roth 578c216e5adSMichael Roth if (!gfh) { 579c216e5adSMichael Roth return; 580c216e5adSMichael Roth } 581c216e5adSMichael Roth 582c216e5adSMichael Roth fh = gfh->fh; 583c216e5adSMichael Roth ret = fflush(fh); 584c216e5adSMichael Roth if (ret == EOF) { 58577dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to flush file"); 586c216e5adSMichael Roth } 587c216e5adSMichael Roth } 588c216e5adSMichael Roth 589c216e5adSMichael Roth static void guest_file_init(void) 590c216e5adSMichael Roth { 591c216e5adSMichael Roth QTAILQ_INIT(&guest_file_state.filehandles); 592c216e5adSMichael Roth } 593c216e5adSMichael Roth 594e72c3f2eSMichael Roth /* linux-specific implementations. avoid this if at all possible. */ 595e72c3f2eSMichael Roth #if defined(__linux__) 596e72c3f2eSMichael Roth 597eab5fd59SPaolo Bonzini #if defined(CONFIG_FSFREEZE) || defined(CONFIG_FSTRIM) 598af02203fSPaolo Bonzini typedef struct FsMount { 599c216e5adSMichael Roth char *dirname; 600c216e5adSMichael Roth char *devtype; 60146d4c572STomoki Sekiyama unsigned int devmajor, devminor; 602af02203fSPaolo Bonzini QTAILQ_ENTRY(FsMount) next; 603af02203fSPaolo Bonzini } FsMount; 604c216e5adSMichael Roth 605e5d9adbdSTomoki Sekiyama typedef QTAILQ_HEAD(FsMountList, FsMount) FsMountList; 6069e8aded4SMichael Roth 607af02203fSPaolo Bonzini static void free_fs_mount_list(FsMountList *mounts) 608c216e5adSMichael Roth { 609af02203fSPaolo Bonzini FsMount *mount, *temp; 610c216e5adSMichael Roth 6119e8aded4SMichael Roth if (!mounts) { 6129e8aded4SMichael Roth return; 6139e8aded4SMichael Roth } 6149e8aded4SMichael Roth 6159e8aded4SMichael Roth QTAILQ_FOREACH_SAFE(mount, mounts, next, temp) { 6169e8aded4SMichael Roth QTAILQ_REMOVE(mounts, mount, next); 617c216e5adSMichael Roth g_free(mount->dirname); 618c216e5adSMichael Roth g_free(mount->devtype); 619c216e5adSMichael Roth g_free(mount); 620c216e5adSMichael Roth } 6219e8aded4SMichael Roth } 6229e8aded4SMichael Roth 62346d4c572STomoki Sekiyama static int dev_major_minor(const char *devpath, 62446d4c572STomoki Sekiyama unsigned int *devmajor, unsigned int *devminor) 62546d4c572STomoki Sekiyama { 62646d4c572STomoki Sekiyama struct stat st; 62746d4c572STomoki Sekiyama 62846d4c572STomoki Sekiyama *devmajor = 0; 62946d4c572STomoki Sekiyama *devminor = 0; 63046d4c572STomoki Sekiyama 63146d4c572STomoki Sekiyama if (stat(devpath, &st) < 0) { 63246d4c572STomoki Sekiyama slog("failed to stat device file '%s': %s", devpath, strerror(errno)); 63346d4c572STomoki Sekiyama return -1; 63446d4c572STomoki Sekiyama } 63546d4c572STomoki Sekiyama if (S_ISDIR(st.st_mode)) { 63646d4c572STomoki Sekiyama /* It is bind mount */ 63746d4c572STomoki Sekiyama return -2; 63846d4c572STomoki Sekiyama } 63946d4c572STomoki Sekiyama if (S_ISBLK(st.st_mode)) { 64046d4c572STomoki Sekiyama *devmajor = major(st.st_rdev); 64146d4c572STomoki Sekiyama *devminor = minor(st.st_rdev); 64246d4c572STomoki Sekiyama return 0; 64346d4c572STomoki Sekiyama } 64446d4c572STomoki Sekiyama return -1; 64546d4c572STomoki Sekiyama } 64646d4c572STomoki Sekiyama 6479e8aded4SMichael Roth /* 6489e8aded4SMichael Roth * Walk the mount table and build a list of local file systems 6499e8aded4SMichael Roth */ 65046d4c572STomoki Sekiyama static void build_fs_mount_list_from_mtab(FsMountList *mounts, Error **errp) 6519e8aded4SMichael Roth { 6529e8aded4SMichael Roth struct mntent *ment; 653af02203fSPaolo Bonzini FsMount *mount; 6549e2fa418SMichael Roth char const *mtab = "/proc/self/mounts"; 6559e8aded4SMichael Roth FILE *fp; 65646d4c572STomoki Sekiyama unsigned int devmajor, devminor; 657c216e5adSMichael Roth 658c216e5adSMichael Roth fp = setmntent(mtab, "r"); 659c216e5adSMichael Roth if (!fp) { 66077dbc81bSMarkus Armbruster error_setg(errp, "failed to open mtab file: '%s'", mtab); 661261551d1SLuiz Capitulino return; 662c216e5adSMichael Roth } 663c216e5adSMichael Roth 664c216e5adSMichael Roth while ((ment = getmntent(fp))) { 665c216e5adSMichael Roth /* 666c216e5adSMichael Roth * An entry which device name doesn't start with a '/' is 667c216e5adSMichael Roth * either a dummy file system or a network file system. 668c216e5adSMichael Roth * Add special handling for smbfs and cifs as is done by 669c216e5adSMichael Roth * coreutils as well. 670c216e5adSMichael Roth */ 671c216e5adSMichael Roth if ((ment->mnt_fsname[0] != '/') || 672c216e5adSMichael Roth (strcmp(ment->mnt_type, "smbfs") == 0) || 673c216e5adSMichael Roth (strcmp(ment->mnt_type, "cifs") == 0)) { 674c216e5adSMichael Roth continue; 675c216e5adSMichael Roth } 67646d4c572STomoki Sekiyama if (dev_major_minor(ment->mnt_fsname, &devmajor, &devminor) == -2) { 67746d4c572STomoki Sekiyama /* Skip bind mounts */ 67846d4c572STomoki Sekiyama continue; 67946d4c572STomoki Sekiyama } 680c216e5adSMichael Roth 681f3a06403SMarkus Armbruster mount = g_new0(FsMount, 1); 682c216e5adSMichael Roth mount->dirname = g_strdup(ment->mnt_dir); 683c216e5adSMichael Roth mount->devtype = g_strdup(ment->mnt_type); 68446d4c572STomoki Sekiyama mount->devmajor = devmajor; 68546d4c572STomoki Sekiyama mount->devminor = devminor; 686c216e5adSMichael Roth 6879e8aded4SMichael Roth QTAILQ_INSERT_TAIL(mounts, mount, next); 688c216e5adSMichael Roth } 689c216e5adSMichael Roth 690c216e5adSMichael Roth endmntent(fp); 691c216e5adSMichael Roth } 69246d4c572STomoki Sekiyama 69346d4c572STomoki Sekiyama static void decode_mntname(char *name, int len) 69446d4c572STomoki Sekiyama { 69546d4c572STomoki Sekiyama int i, j = 0; 69646d4c572STomoki Sekiyama for (i = 0; i <= len; i++) { 69746d4c572STomoki Sekiyama if (name[i] != '\\') { 69846d4c572STomoki Sekiyama name[j++] = name[i]; 69946d4c572STomoki Sekiyama } else if (name[i + 1] == '\\') { 70046d4c572STomoki Sekiyama name[j++] = '\\'; 70146d4c572STomoki Sekiyama i++; 70246d4c572STomoki Sekiyama } else if (name[i + 1] >= '0' && name[i + 1] <= '3' && 70346d4c572STomoki Sekiyama name[i + 2] >= '0' && name[i + 2] <= '7' && 70446d4c572STomoki Sekiyama name[i + 3] >= '0' && name[i + 3] <= '7') { 70546d4c572STomoki Sekiyama name[j++] = (name[i + 1] - '0') * 64 + 70646d4c572STomoki Sekiyama (name[i + 2] - '0') * 8 + 70746d4c572STomoki Sekiyama (name[i + 3] - '0'); 70846d4c572STomoki Sekiyama i += 3; 70946d4c572STomoki Sekiyama } else { 71046d4c572STomoki Sekiyama name[j++] = name[i]; 71146d4c572STomoki Sekiyama } 71246d4c572STomoki Sekiyama } 71346d4c572STomoki Sekiyama } 71446d4c572STomoki Sekiyama 71546d4c572STomoki Sekiyama static void build_fs_mount_list(FsMountList *mounts, Error **errp) 71646d4c572STomoki Sekiyama { 71746d4c572STomoki Sekiyama FsMount *mount; 71846d4c572STomoki Sekiyama char const *mountinfo = "/proc/self/mountinfo"; 71946d4c572STomoki Sekiyama FILE *fp; 72046d4c572STomoki Sekiyama char *line = NULL, *dash; 72146d4c572STomoki Sekiyama size_t n; 72246d4c572STomoki Sekiyama char check; 72346d4c572STomoki Sekiyama unsigned int devmajor, devminor; 72446d4c572STomoki Sekiyama int ret, dir_s, dir_e, type_s, type_e, dev_s, dev_e; 72546d4c572STomoki Sekiyama 72646d4c572STomoki Sekiyama fp = fopen(mountinfo, "r"); 72746d4c572STomoki Sekiyama if (!fp) { 72846d4c572STomoki Sekiyama build_fs_mount_list_from_mtab(mounts, errp); 72946d4c572STomoki Sekiyama return; 73046d4c572STomoki Sekiyama } 73146d4c572STomoki Sekiyama 73246d4c572STomoki Sekiyama while (getline(&line, &n, fp) != -1) { 73346d4c572STomoki Sekiyama ret = sscanf(line, "%*u %*u %u:%u %*s %n%*s%n%c", 73446d4c572STomoki Sekiyama &devmajor, &devminor, &dir_s, &dir_e, &check); 73546d4c572STomoki Sekiyama if (ret < 3) { 73646d4c572STomoki Sekiyama continue; 73746d4c572STomoki Sekiyama } 73846d4c572STomoki Sekiyama dash = strstr(line + dir_e, " - "); 73946d4c572STomoki Sekiyama if (!dash) { 74046d4c572STomoki Sekiyama continue; 74146d4c572STomoki Sekiyama } 74246d4c572STomoki Sekiyama ret = sscanf(dash, " - %n%*s%n %n%*s%n%c", 74346d4c572STomoki Sekiyama &type_s, &type_e, &dev_s, &dev_e, &check); 74446d4c572STomoki Sekiyama if (ret < 1) { 74546d4c572STomoki Sekiyama continue; 74646d4c572STomoki Sekiyama } 74746d4c572STomoki Sekiyama line[dir_e] = 0; 74846d4c572STomoki Sekiyama dash[type_e] = 0; 74946d4c572STomoki Sekiyama dash[dev_e] = 0; 75046d4c572STomoki Sekiyama decode_mntname(line + dir_s, dir_e - dir_s); 75146d4c572STomoki Sekiyama decode_mntname(dash + dev_s, dev_e - dev_s); 75246d4c572STomoki Sekiyama if (devmajor == 0) { 75346d4c572STomoki Sekiyama /* btrfs reports major number = 0 */ 75446d4c572STomoki Sekiyama if (strcmp("btrfs", dash + type_s) != 0 || 75546d4c572STomoki Sekiyama dev_major_minor(dash + dev_s, &devmajor, &devminor) < 0) { 75646d4c572STomoki Sekiyama continue; 75746d4c572STomoki Sekiyama } 75846d4c572STomoki Sekiyama } 75946d4c572STomoki Sekiyama 760f3a06403SMarkus Armbruster mount = g_new0(FsMount, 1); 76146d4c572STomoki Sekiyama mount->dirname = g_strdup(line + dir_s); 76246d4c572STomoki Sekiyama mount->devtype = g_strdup(dash + type_s); 76346d4c572STomoki Sekiyama mount->devmajor = devmajor; 76446d4c572STomoki Sekiyama mount->devminor = devminor; 76546d4c572STomoki Sekiyama 76646d4c572STomoki Sekiyama QTAILQ_INSERT_TAIL(mounts, mount, next); 76746d4c572STomoki Sekiyama } 76846d4c572STomoki Sekiyama free(line); 76946d4c572STomoki Sekiyama 77046d4c572STomoki Sekiyama fclose(fp); 77146d4c572STomoki Sekiyama } 772eab5fd59SPaolo Bonzini #endif 773eab5fd59SPaolo Bonzini 774eab5fd59SPaolo Bonzini #if defined(CONFIG_FSFREEZE) 775c216e5adSMichael Roth 77646d4c572STomoki Sekiyama static char *get_pci_driver(char const *syspath, int pathlen, Error **errp) 77746d4c572STomoki Sekiyama { 77846d4c572STomoki Sekiyama char *path; 77946d4c572STomoki Sekiyama char *dpath; 78046d4c572STomoki Sekiyama char *driver = NULL; 78146d4c572STomoki Sekiyama char buf[PATH_MAX]; 78246d4c572STomoki Sekiyama ssize_t len; 78346d4c572STomoki Sekiyama 78446d4c572STomoki Sekiyama path = g_strndup(syspath, pathlen); 78546d4c572STomoki Sekiyama dpath = g_strdup_printf("%s/driver", path); 78646d4c572STomoki Sekiyama len = readlink(dpath, buf, sizeof(buf) - 1); 78746d4c572STomoki Sekiyama if (len != -1) { 78846d4c572STomoki Sekiyama buf[len] = 0; 78946d4c572STomoki Sekiyama driver = g_strdup(basename(buf)); 79046d4c572STomoki Sekiyama } 79146d4c572STomoki Sekiyama g_free(dpath); 79246d4c572STomoki Sekiyama g_free(path); 79346d4c572STomoki Sekiyama return driver; 79446d4c572STomoki Sekiyama } 79546d4c572STomoki Sekiyama 79646d4c572STomoki Sekiyama static int compare_uint(const void *_a, const void *_b) 79746d4c572STomoki Sekiyama { 79846d4c572STomoki Sekiyama unsigned int a = *(unsigned int *)_a; 79946d4c572STomoki Sekiyama unsigned int b = *(unsigned int *)_b; 80046d4c572STomoki Sekiyama 80146d4c572STomoki Sekiyama return a < b ? -1 : a > b ? 1 : 0; 80246d4c572STomoki Sekiyama } 80346d4c572STomoki Sekiyama 80446d4c572STomoki Sekiyama /* Walk the specified sysfs and build a sorted list of host or ata numbers */ 80546d4c572STomoki Sekiyama static int build_hosts(char const *syspath, char const *host, bool ata, 80646d4c572STomoki Sekiyama unsigned int *hosts, int hosts_max, Error **errp) 80746d4c572STomoki Sekiyama { 80846d4c572STomoki Sekiyama char *path; 80946d4c572STomoki Sekiyama DIR *dir; 81046d4c572STomoki Sekiyama struct dirent *entry; 81146d4c572STomoki Sekiyama int i = 0; 81246d4c572STomoki Sekiyama 81346d4c572STomoki Sekiyama path = g_strndup(syspath, host - syspath); 81446d4c572STomoki Sekiyama dir = opendir(path); 81546d4c572STomoki Sekiyama if (!dir) { 81646d4c572STomoki Sekiyama error_setg_errno(errp, errno, "opendir(\"%s\")", path); 81746d4c572STomoki Sekiyama g_free(path); 81846d4c572STomoki Sekiyama return -1; 81946d4c572STomoki Sekiyama } 82046d4c572STomoki Sekiyama 82146d4c572STomoki Sekiyama while (i < hosts_max) { 82246d4c572STomoki Sekiyama entry = readdir(dir); 82346d4c572STomoki Sekiyama if (!entry) { 82446d4c572STomoki Sekiyama break; 82546d4c572STomoki Sekiyama } 82646d4c572STomoki Sekiyama if (ata && sscanf(entry->d_name, "ata%d", hosts + i) == 1) { 82746d4c572STomoki Sekiyama ++i; 82846d4c572STomoki Sekiyama } else if (!ata && sscanf(entry->d_name, "host%d", hosts + i) == 1) { 82946d4c572STomoki Sekiyama ++i; 83046d4c572STomoki Sekiyama } 83146d4c572STomoki Sekiyama } 83246d4c572STomoki Sekiyama 83346d4c572STomoki Sekiyama qsort(hosts, i, sizeof(hosts[0]), compare_uint); 83446d4c572STomoki Sekiyama 83546d4c572STomoki Sekiyama g_free(path); 83646d4c572STomoki Sekiyama closedir(dir); 83746d4c572STomoki Sekiyama return i; 83846d4c572STomoki Sekiyama } 83946d4c572STomoki Sekiyama 84046d4c572STomoki Sekiyama /* Store disk device info specified by @sysfs into @fs */ 84146d4c572STomoki Sekiyama static void build_guest_fsinfo_for_real_device(char const *syspath, 84246d4c572STomoki Sekiyama GuestFilesystemInfo *fs, 84346d4c572STomoki Sekiyama Error **errp) 84446d4c572STomoki Sekiyama { 84546d4c572STomoki Sekiyama unsigned int pci[4], host, hosts[8], tgt[3]; 84646d4c572STomoki Sekiyama int i, nhosts = 0, pcilen; 84746d4c572STomoki Sekiyama GuestDiskAddress *disk; 84846d4c572STomoki Sekiyama GuestPCIAddress *pciaddr; 84946d4c572STomoki Sekiyama GuestDiskAddressList *list = NULL; 85046d4c572STomoki Sekiyama bool has_ata = false, has_host = false, has_tgt = false; 85146d4c572STomoki Sekiyama char *p, *q, *driver = NULL; 85246d4c572STomoki Sekiyama 85346d4c572STomoki Sekiyama p = strstr(syspath, "/devices/pci"); 85446d4c572STomoki Sekiyama if (!p || sscanf(p + 12, "%*x:%*x/%x:%x:%x.%x%n", 85546d4c572STomoki Sekiyama pci, pci + 1, pci + 2, pci + 3, &pcilen) < 4) { 85646d4c572STomoki Sekiyama g_debug("only pci device is supported: sysfs path \"%s\"", syspath); 85746d4c572STomoki Sekiyama return; 85846d4c572STomoki Sekiyama } 85946d4c572STomoki Sekiyama 86046d4c572STomoki Sekiyama driver = get_pci_driver(syspath, (p + 12 + pcilen) - syspath, errp); 86146d4c572STomoki Sekiyama if (!driver) { 86246d4c572STomoki Sekiyama goto cleanup; 86346d4c572STomoki Sekiyama } 86446d4c572STomoki Sekiyama 86546d4c572STomoki Sekiyama p = strstr(syspath, "/target"); 86646d4c572STomoki Sekiyama if (p && sscanf(p + 7, "%*u:%*u:%*u/%*u:%u:%u:%u", 86746d4c572STomoki Sekiyama tgt, tgt + 1, tgt + 2) == 3) { 86846d4c572STomoki Sekiyama has_tgt = true; 86946d4c572STomoki Sekiyama } 87046d4c572STomoki Sekiyama 87146d4c572STomoki Sekiyama p = strstr(syspath, "/ata"); 87246d4c572STomoki Sekiyama if (p) { 87346d4c572STomoki Sekiyama q = p + 4; 87446d4c572STomoki Sekiyama has_ata = true; 87546d4c572STomoki Sekiyama } else { 87646d4c572STomoki Sekiyama p = strstr(syspath, "/host"); 87746d4c572STomoki Sekiyama q = p + 5; 87846d4c572STomoki Sekiyama } 87946d4c572STomoki Sekiyama if (p && sscanf(q, "%u", &host) == 1) { 88046d4c572STomoki Sekiyama has_host = true; 88146d4c572STomoki Sekiyama nhosts = build_hosts(syspath, p, has_ata, hosts, 88246d4c572STomoki Sekiyama sizeof(hosts) / sizeof(hosts[0]), errp); 88346d4c572STomoki Sekiyama if (nhosts < 0) { 88446d4c572STomoki Sekiyama goto cleanup; 88546d4c572STomoki Sekiyama } 88646d4c572STomoki Sekiyama } 88746d4c572STomoki Sekiyama 88846d4c572STomoki Sekiyama pciaddr = g_malloc0(sizeof(*pciaddr)); 88946d4c572STomoki Sekiyama pciaddr->domain = pci[0]; 89046d4c572STomoki Sekiyama pciaddr->bus = pci[1]; 89146d4c572STomoki Sekiyama pciaddr->slot = pci[2]; 89246d4c572STomoki Sekiyama pciaddr->function = pci[3]; 89346d4c572STomoki Sekiyama 89446d4c572STomoki Sekiyama disk = g_malloc0(sizeof(*disk)); 89546d4c572STomoki Sekiyama disk->pci_controller = pciaddr; 89646d4c572STomoki Sekiyama 89746d4c572STomoki Sekiyama list = g_malloc0(sizeof(*list)); 89846d4c572STomoki Sekiyama list->value = disk; 89946d4c572STomoki Sekiyama 90046d4c572STomoki Sekiyama if (strcmp(driver, "ata_piix") == 0) { 90146d4c572STomoki Sekiyama /* a host per ide bus, target*:0:<unit>:0 */ 90246d4c572STomoki Sekiyama if (!has_host || !has_tgt) { 90346d4c572STomoki Sekiyama g_debug("invalid sysfs path '%s' (driver '%s')", syspath, driver); 90446d4c572STomoki Sekiyama goto cleanup; 90546d4c572STomoki Sekiyama } 90646d4c572STomoki Sekiyama for (i = 0; i < nhosts; i++) { 90746d4c572STomoki Sekiyama if (host == hosts[i]) { 90846d4c572STomoki Sekiyama disk->bus_type = GUEST_DISK_BUS_TYPE_IDE; 90946d4c572STomoki Sekiyama disk->bus = i; 91046d4c572STomoki Sekiyama disk->unit = tgt[1]; 91146d4c572STomoki Sekiyama break; 91246d4c572STomoki Sekiyama } 91346d4c572STomoki Sekiyama } 91446d4c572STomoki Sekiyama if (i >= nhosts) { 91546d4c572STomoki Sekiyama g_debug("no host for '%s' (driver '%s')", syspath, driver); 91646d4c572STomoki Sekiyama goto cleanup; 91746d4c572STomoki Sekiyama } 91846d4c572STomoki Sekiyama } else if (strcmp(driver, "sym53c8xx") == 0) { 91946d4c572STomoki Sekiyama /* scsi(LSI Logic): target*:0:<unit>:0 */ 92046d4c572STomoki Sekiyama if (!has_tgt) { 92146d4c572STomoki Sekiyama g_debug("invalid sysfs path '%s' (driver '%s')", syspath, driver); 92246d4c572STomoki Sekiyama goto cleanup; 92346d4c572STomoki Sekiyama } 92446d4c572STomoki Sekiyama disk->bus_type = GUEST_DISK_BUS_TYPE_SCSI; 92546d4c572STomoki Sekiyama disk->unit = tgt[1]; 92646d4c572STomoki Sekiyama } else if (strcmp(driver, "virtio-pci") == 0) { 92746d4c572STomoki Sekiyama if (has_tgt) { 92846d4c572STomoki Sekiyama /* virtio-scsi: target*:0:0:<unit> */ 92946d4c572STomoki Sekiyama disk->bus_type = GUEST_DISK_BUS_TYPE_SCSI; 93046d4c572STomoki Sekiyama disk->unit = tgt[2]; 93146d4c572STomoki Sekiyama } else { 93246d4c572STomoki Sekiyama /* virtio-blk: 1 disk per 1 device */ 93346d4c572STomoki Sekiyama disk->bus_type = GUEST_DISK_BUS_TYPE_VIRTIO; 93446d4c572STomoki Sekiyama } 93546d4c572STomoki Sekiyama } else if (strcmp(driver, "ahci") == 0) { 93646d4c572STomoki Sekiyama /* ahci: 1 host per 1 unit */ 93746d4c572STomoki Sekiyama if (!has_host || !has_tgt) { 93846d4c572STomoki Sekiyama g_debug("invalid sysfs path '%s' (driver '%s')", syspath, driver); 93946d4c572STomoki Sekiyama goto cleanup; 94046d4c572STomoki Sekiyama } 94146d4c572STomoki Sekiyama for (i = 0; i < nhosts; i++) { 94246d4c572STomoki Sekiyama if (host == hosts[i]) { 94346d4c572STomoki Sekiyama disk->unit = i; 94446d4c572STomoki Sekiyama disk->bus_type = GUEST_DISK_BUS_TYPE_SATA; 94546d4c572STomoki Sekiyama break; 94646d4c572STomoki Sekiyama } 94746d4c572STomoki Sekiyama } 94846d4c572STomoki Sekiyama if (i >= nhosts) { 94946d4c572STomoki Sekiyama g_debug("no host for '%s' (driver '%s')", syspath, driver); 95046d4c572STomoki Sekiyama goto cleanup; 95146d4c572STomoki Sekiyama } 95246d4c572STomoki Sekiyama } else { 95346d4c572STomoki Sekiyama g_debug("unknown driver '%s' (sysfs path '%s')", driver, syspath); 95446d4c572STomoki Sekiyama goto cleanup; 95546d4c572STomoki Sekiyama } 95646d4c572STomoki Sekiyama 95746d4c572STomoki Sekiyama list->next = fs->disk; 95846d4c572STomoki Sekiyama fs->disk = list; 95946d4c572STomoki Sekiyama g_free(driver); 96046d4c572STomoki Sekiyama return; 96146d4c572STomoki Sekiyama 96246d4c572STomoki Sekiyama cleanup: 96346d4c572STomoki Sekiyama if (list) { 96446d4c572STomoki Sekiyama qapi_free_GuestDiskAddressList(list); 96546d4c572STomoki Sekiyama } 96646d4c572STomoki Sekiyama g_free(driver); 96746d4c572STomoki Sekiyama } 96846d4c572STomoki Sekiyama 96946d4c572STomoki Sekiyama static void build_guest_fsinfo_for_device(char const *devpath, 97046d4c572STomoki Sekiyama GuestFilesystemInfo *fs, 97146d4c572STomoki Sekiyama Error **errp); 97246d4c572STomoki Sekiyama 97346d4c572STomoki Sekiyama /* Store a list of slave devices of virtual volume specified by @syspath into 97446d4c572STomoki Sekiyama * @fs */ 97546d4c572STomoki Sekiyama static void build_guest_fsinfo_for_virtual_device(char const *syspath, 97646d4c572STomoki Sekiyama GuestFilesystemInfo *fs, 97746d4c572STomoki Sekiyama Error **errp) 97846d4c572STomoki Sekiyama { 97946d4c572STomoki Sekiyama DIR *dir; 98046d4c572STomoki Sekiyama char *dirpath; 981e668d1b8Szhanghailiang struct dirent *entry; 98246d4c572STomoki Sekiyama 98346d4c572STomoki Sekiyama dirpath = g_strdup_printf("%s/slaves", syspath); 98446d4c572STomoki Sekiyama dir = opendir(dirpath); 98546d4c572STomoki Sekiyama if (!dir) { 98646d4c572STomoki Sekiyama error_setg_errno(errp, errno, "opendir(\"%s\")", dirpath); 98746d4c572STomoki Sekiyama g_free(dirpath); 98846d4c572STomoki Sekiyama return; 98946d4c572STomoki Sekiyama } 99046d4c572STomoki Sekiyama 99146d4c572STomoki Sekiyama for (;;) { 992e668d1b8Szhanghailiang errno = 0; 993e668d1b8Szhanghailiang entry = readdir(dir); 994e668d1b8Szhanghailiang if (entry == NULL) { 995e668d1b8Szhanghailiang if (errno) { 996e668d1b8Szhanghailiang error_setg_errno(errp, errno, "readdir(\"%s\")", dirpath); 99746d4c572STomoki Sekiyama } 99846d4c572STomoki Sekiyama break; 99946d4c572STomoki Sekiyama } 100046d4c572STomoki Sekiyama 1001e668d1b8Szhanghailiang if (entry->d_type == DT_LNK) { 1002e668d1b8Szhanghailiang char *path; 1003e668d1b8Szhanghailiang 1004e668d1b8Szhanghailiang g_debug(" slave device '%s'", entry->d_name); 1005e668d1b8Szhanghailiang path = g_strdup_printf("%s/slaves/%s", syspath, entry->d_name); 1006e668d1b8Szhanghailiang build_guest_fsinfo_for_device(path, fs, errp); 1007e668d1b8Szhanghailiang g_free(path); 100846d4c572STomoki Sekiyama 100946d4c572STomoki Sekiyama if (*errp) { 101046d4c572STomoki Sekiyama break; 101146d4c572STomoki Sekiyama } 101246d4c572STomoki Sekiyama } 101346d4c572STomoki Sekiyama } 101446d4c572STomoki Sekiyama 1015e668d1b8Szhanghailiang g_free(dirpath); 101646d4c572STomoki Sekiyama closedir(dir); 101746d4c572STomoki Sekiyama } 101846d4c572STomoki Sekiyama 101946d4c572STomoki Sekiyama /* Dispatch to functions for virtual/real device */ 102046d4c572STomoki Sekiyama static void build_guest_fsinfo_for_device(char const *devpath, 102146d4c572STomoki Sekiyama GuestFilesystemInfo *fs, 102246d4c572STomoki Sekiyama Error **errp) 102346d4c572STomoki Sekiyama { 102446d4c572STomoki Sekiyama char *syspath = realpath(devpath, NULL); 102546d4c572STomoki Sekiyama 102646d4c572STomoki Sekiyama if (!syspath) { 102746d4c572STomoki Sekiyama error_setg_errno(errp, errno, "realpath(\"%s\")", devpath); 102846d4c572STomoki Sekiyama return; 102946d4c572STomoki Sekiyama } 103046d4c572STomoki Sekiyama 103146d4c572STomoki Sekiyama if (!fs->name) { 103246d4c572STomoki Sekiyama fs->name = g_strdup(basename(syspath)); 103346d4c572STomoki Sekiyama } 103446d4c572STomoki Sekiyama 103546d4c572STomoki Sekiyama g_debug(" parse sysfs path '%s'", syspath); 103646d4c572STomoki Sekiyama 103746d4c572STomoki Sekiyama if (strstr(syspath, "/devices/virtual/block/")) { 103846d4c572STomoki Sekiyama build_guest_fsinfo_for_virtual_device(syspath, fs, errp); 103946d4c572STomoki Sekiyama } else { 104046d4c572STomoki Sekiyama build_guest_fsinfo_for_real_device(syspath, fs, errp); 104146d4c572STomoki Sekiyama } 104246d4c572STomoki Sekiyama 104346d4c572STomoki Sekiyama free(syspath); 104446d4c572STomoki Sekiyama } 104546d4c572STomoki Sekiyama 104646d4c572STomoki Sekiyama /* Return a list of the disk device(s)' info which @mount lies on */ 104746d4c572STomoki Sekiyama static GuestFilesystemInfo *build_guest_fsinfo(struct FsMount *mount, 104846d4c572STomoki Sekiyama Error **errp) 104946d4c572STomoki Sekiyama { 105046d4c572STomoki Sekiyama GuestFilesystemInfo *fs = g_malloc0(sizeof(*fs)); 105146d4c572STomoki Sekiyama char *devpath = g_strdup_printf("/sys/dev/block/%u:%u", 105246d4c572STomoki Sekiyama mount->devmajor, mount->devminor); 105346d4c572STomoki Sekiyama 105446d4c572STomoki Sekiyama fs->mountpoint = g_strdup(mount->dirname); 105546d4c572STomoki Sekiyama fs->type = g_strdup(mount->devtype); 105646d4c572STomoki Sekiyama build_guest_fsinfo_for_device(devpath, fs, errp); 105746d4c572STomoki Sekiyama 105846d4c572STomoki Sekiyama g_free(devpath); 105946d4c572STomoki Sekiyama return fs; 106046d4c572STomoki Sekiyama } 106146d4c572STomoki Sekiyama 106246d4c572STomoki Sekiyama GuestFilesystemInfoList *qmp_guest_get_fsinfo(Error **errp) 106346d4c572STomoki Sekiyama { 106446d4c572STomoki Sekiyama FsMountList mounts; 106546d4c572STomoki Sekiyama struct FsMount *mount; 106646d4c572STomoki Sekiyama GuestFilesystemInfoList *new, *ret = NULL; 106746d4c572STomoki Sekiyama Error *local_err = NULL; 106846d4c572STomoki Sekiyama 106946d4c572STomoki Sekiyama QTAILQ_INIT(&mounts); 107046d4c572STomoki Sekiyama build_fs_mount_list(&mounts, &local_err); 107146d4c572STomoki Sekiyama if (local_err) { 107246d4c572STomoki Sekiyama error_propagate(errp, local_err); 107346d4c572STomoki Sekiyama return NULL; 107446d4c572STomoki Sekiyama } 107546d4c572STomoki Sekiyama 107646d4c572STomoki Sekiyama QTAILQ_FOREACH(mount, &mounts, next) { 107746d4c572STomoki Sekiyama g_debug("Building guest fsinfo for '%s'", mount->dirname); 107846d4c572STomoki Sekiyama 107946d4c572STomoki Sekiyama new = g_malloc0(sizeof(*ret)); 108046d4c572STomoki Sekiyama new->value = build_guest_fsinfo(mount, &local_err); 108146d4c572STomoki Sekiyama new->next = ret; 108246d4c572STomoki Sekiyama ret = new; 108346d4c572STomoki Sekiyama if (local_err) { 108446d4c572STomoki Sekiyama error_propagate(errp, local_err); 108546d4c572STomoki Sekiyama qapi_free_GuestFilesystemInfoList(ret); 108646d4c572STomoki Sekiyama ret = NULL; 108746d4c572STomoki Sekiyama break; 108846d4c572STomoki Sekiyama } 108946d4c572STomoki Sekiyama } 109046d4c572STomoki Sekiyama 109146d4c572STomoki Sekiyama free_fs_mount_list(&mounts); 109246d4c572STomoki Sekiyama return ret; 109346d4c572STomoki Sekiyama } 109446d4c572STomoki Sekiyama 109546d4c572STomoki Sekiyama 1096ec0f694cSTomoki Sekiyama typedef enum { 1097ec0f694cSTomoki Sekiyama FSFREEZE_HOOK_THAW = 0, 1098ec0f694cSTomoki Sekiyama FSFREEZE_HOOK_FREEZE, 1099ec0f694cSTomoki Sekiyama } FsfreezeHookArg; 1100ec0f694cSTomoki Sekiyama 110113a439ecSStefan Weil static const char *fsfreeze_hook_arg_string[] = { 1102ec0f694cSTomoki Sekiyama "thaw", 1103ec0f694cSTomoki Sekiyama "freeze", 1104ec0f694cSTomoki Sekiyama }; 1105ec0f694cSTomoki Sekiyama 110677dbc81bSMarkus Armbruster static void execute_fsfreeze_hook(FsfreezeHookArg arg, Error **errp) 1107ec0f694cSTomoki Sekiyama { 1108ec0f694cSTomoki Sekiyama int status; 1109ec0f694cSTomoki Sekiyama pid_t pid; 1110ec0f694cSTomoki Sekiyama const char *hook; 1111ec0f694cSTomoki Sekiyama const char *arg_str = fsfreeze_hook_arg_string[arg]; 1112ec0f694cSTomoki Sekiyama Error *local_err = NULL; 1113ec0f694cSTomoki Sekiyama 1114ec0f694cSTomoki Sekiyama hook = ga_fsfreeze_hook(ga_state); 1115ec0f694cSTomoki Sekiyama if (!hook) { 1116ec0f694cSTomoki Sekiyama return; 1117ec0f694cSTomoki Sekiyama } 1118ec0f694cSTomoki Sekiyama if (access(hook, X_OK) != 0) { 111977dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "can't access fsfreeze hook '%s'", hook); 1120ec0f694cSTomoki Sekiyama return; 1121ec0f694cSTomoki Sekiyama } 1122ec0f694cSTomoki Sekiyama 1123ec0f694cSTomoki Sekiyama slog("executing fsfreeze hook with arg '%s'", arg_str); 1124ec0f694cSTomoki Sekiyama pid = fork(); 1125ec0f694cSTomoki Sekiyama if (pid == 0) { 1126ec0f694cSTomoki Sekiyama setsid(); 1127ec0f694cSTomoki Sekiyama reopen_fd_to_null(0); 1128ec0f694cSTomoki Sekiyama reopen_fd_to_null(1); 1129ec0f694cSTomoki Sekiyama reopen_fd_to_null(2); 1130ec0f694cSTomoki Sekiyama 1131ec0f694cSTomoki Sekiyama execle(hook, hook, arg_str, NULL, environ); 1132ec0f694cSTomoki Sekiyama _exit(EXIT_FAILURE); 1133ec0f694cSTomoki Sekiyama } else if (pid < 0) { 113477dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to create child process"); 1135ec0f694cSTomoki Sekiyama return; 1136ec0f694cSTomoki Sekiyama } 1137ec0f694cSTomoki Sekiyama 1138ec0f694cSTomoki Sekiyama ga_wait_child(pid, &status, &local_err); 113984d18f06SMarkus Armbruster if (local_err) { 114077dbc81bSMarkus Armbruster error_propagate(errp, local_err); 1141ec0f694cSTomoki Sekiyama return; 1142ec0f694cSTomoki Sekiyama } 1143ec0f694cSTomoki Sekiyama 1144ec0f694cSTomoki Sekiyama if (!WIFEXITED(status)) { 114577dbc81bSMarkus Armbruster error_setg(errp, "fsfreeze hook has terminated abnormally"); 1146ec0f694cSTomoki Sekiyama return; 1147ec0f694cSTomoki Sekiyama } 1148ec0f694cSTomoki Sekiyama 1149ec0f694cSTomoki Sekiyama status = WEXITSTATUS(status); 1150ec0f694cSTomoki Sekiyama if (status) { 115177dbc81bSMarkus Armbruster error_setg(errp, "fsfreeze hook has failed with status %d", status); 1152ec0f694cSTomoki Sekiyama return; 1153ec0f694cSTomoki Sekiyama } 1154ec0f694cSTomoki Sekiyama } 1155ec0f694cSTomoki Sekiyama 1156c216e5adSMichael Roth /* 1157c216e5adSMichael Roth * Return status of freeze/thaw 1158c216e5adSMichael Roth */ 115977dbc81bSMarkus Armbruster GuestFsfreezeStatus qmp_guest_fsfreeze_status(Error **errp) 1160c216e5adSMichael Roth { 1161f22d85e9SMichael Roth if (ga_is_frozen(ga_state)) { 1162f22d85e9SMichael Roth return GUEST_FSFREEZE_STATUS_FROZEN; 1163f22d85e9SMichael Roth } 1164f22d85e9SMichael Roth 1165f22d85e9SMichael Roth return GUEST_FSFREEZE_STATUS_THAWED; 1166c216e5adSMichael Roth } 1167c216e5adSMichael Roth 1168e99bce20STomoki Sekiyama int64_t qmp_guest_fsfreeze_freeze(Error **errp) 1169e99bce20STomoki Sekiyama { 1170e99bce20STomoki Sekiyama return qmp_guest_fsfreeze_freeze_list(false, NULL, errp); 1171e99bce20STomoki Sekiyama } 1172e99bce20STomoki Sekiyama 1173c216e5adSMichael Roth /* 1174c216e5adSMichael Roth * Walk list of mounted file systems in the guest, and freeze the ones which 1175c216e5adSMichael Roth * are real local file systems. 1176c216e5adSMichael Roth */ 1177e99bce20STomoki Sekiyama int64_t qmp_guest_fsfreeze_freeze_list(bool has_mountpoints, 1178e99bce20STomoki Sekiyama strList *mountpoints, 1179e99bce20STomoki Sekiyama Error **errp) 1180c216e5adSMichael Roth { 1181c216e5adSMichael Roth int ret = 0, i = 0; 1182e99bce20STomoki Sekiyama strList *list; 1183af02203fSPaolo Bonzini FsMountList mounts; 1184af02203fSPaolo Bonzini struct FsMount *mount; 1185261551d1SLuiz Capitulino Error *local_err = NULL; 1186c216e5adSMichael Roth int fd; 1187c216e5adSMichael Roth 1188c216e5adSMichael Roth slog("guest-fsfreeze called"); 1189c216e5adSMichael Roth 1190ec0f694cSTomoki Sekiyama execute_fsfreeze_hook(FSFREEZE_HOOK_FREEZE, &local_err); 119184d18f06SMarkus Armbruster if (local_err) { 119277dbc81bSMarkus Armbruster error_propagate(errp, local_err); 1193ec0f694cSTomoki Sekiyama return -1; 1194ec0f694cSTomoki Sekiyama } 1195ec0f694cSTomoki Sekiyama 11969e8aded4SMichael Roth QTAILQ_INIT(&mounts); 1197261551d1SLuiz Capitulino build_fs_mount_list(&mounts, &local_err); 119884d18f06SMarkus Armbruster if (local_err) { 119977dbc81bSMarkus Armbruster error_propagate(errp, local_err); 1200261551d1SLuiz Capitulino return -1; 1201c216e5adSMichael Roth } 1202c216e5adSMichael Roth 1203c216e5adSMichael Roth /* cannot risk guest agent blocking itself on a write in this state */ 1204f22d85e9SMichael Roth ga_set_frozen(ga_state); 1205c216e5adSMichael Roth 1206e5d9adbdSTomoki Sekiyama QTAILQ_FOREACH_REVERSE(mount, &mounts, FsMountList, next) { 1207e99bce20STomoki Sekiyama /* To issue fsfreeze in the reverse order of mounts, check if the 1208e99bce20STomoki Sekiyama * mount is listed in the list here */ 1209e99bce20STomoki Sekiyama if (has_mountpoints) { 1210e99bce20STomoki Sekiyama for (list = mountpoints; list; list = list->next) { 1211e99bce20STomoki Sekiyama if (strcmp(list->value, mount->dirname) == 0) { 1212e99bce20STomoki Sekiyama break; 1213e99bce20STomoki Sekiyama } 1214e99bce20STomoki Sekiyama } 1215e99bce20STomoki Sekiyama if (!list) { 1216e99bce20STomoki Sekiyama continue; 1217e99bce20STomoki Sekiyama } 1218e99bce20STomoki Sekiyama } 1219e99bce20STomoki Sekiyama 1220c216e5adSMichael Roth fd = qemu_open(mount->dirname, O_RDONLY); 1221c216e5adSMichael Roth if (fd == -1) { 122277dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to open %s", mount->dirname); 1223c216e5adSMichael Roth goto error; 1224c216e5adSMichael Roth } 1225c216e5adSMichael Roth 1226c216e5adSMichael Roth /* we try to cull filesytems we know won't work in advance, but other 1227c216e5adSMichael Roth * filesytems may not implement fsfreeze for less obvious reasons. 12289e8aded4SMichael Roth * these will report EOPNOTSUPP. we simply ignore these when tallying 12299e8aded4SMichael Roth * the number of frozen filesystems. 12309e8aded4SMichael Roth * 12319e8aded4SMichael Roth * any other error means a failure to freeze a filesystem we 12329e8aded4SMichael Roth * expect to be freezable, so return an error in those cases 12339e8aded4SMichael Roth * and return system to thawed state. 1234c216e5adSMichael Roth */ 1235c216e5adSMichael Roth ret = ioctl(fd, FIFREEZE); 12369e8aded4SMichael Roth if (ret == -1) { 12379e8aded4SMichael Roth if (errno != EOPNOTSUPP) { 123877dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to freeze %s", 1239617fbbc1SLuiz Capitulino mount->dirname); 1240c216e5adSMichael Roth close(fd); 1241c216e5adSMichael Roth goto error; 1242c216e5adSMichael Roth } 12439e8aded4SMichael Roth } else { 1244c216e5adSMichael Roth i++; 1245c216e5adSMichael Roth } 12469e8aded4SMichael Roth close(fd); 12479e8aded4SMichael Roth } 1248c216e5adSMichael Roth 1249af02203fSPaolo Bonzini free_fs_mount_list(&mounts); 1250c216e5adSMichael Roth return i; 1251c216e5adSMichael Roth 1252c216e5adSMichael Roth error: 1253af02203fSPaolo Bonzini free_fs_mount_list(&mounts); 1254c216e5adSMichael Roth qmp_guest_fsfreeze_thaw(NULL); 1255c216e5adSMichael Roth return 0; 1256c216e5adSMichael Roth } 1257c216e5adSMichael Roth 1258c216e5adSMichael Roth /* 1259c216e5adSMichael Roth * Walk list of frozen file systems in the guest, and thaw them. 1260c216e5adSMichael Roth */ 126177dbc81bSMarkus Armbruster int64_t qmp_guest_fsfreeze_thaw(Error **errp) 1262c216e5adSMichael Roth { 1263c216e5adSMichael Roth int ret; 1264af02203fSPaolo Bonzini FsMountList mounts; 1265af02203fSPaolo Bonzini FsMount *mount; 12669e8aded4SMichael Roth int fd, i = 0, logged; 1267261551d1SLuiz Capitulino Error *local_err = NULL; 1268c216e5adSMichael Roth 12699e8aded4SMichael Roth QTAILQ_INIT(&mounts); 1270261551d1SLuiz Capitulino build_fs_mount_list(&mounts, &local_err); 127184d18f06SMarkus Armbruster if (local_err) { 127277dbc81bSMarkus Armbruster error_propagate(errp, local_err); 12739e8aded4SMichael Roth return 0; 12749e8aded4SMichael Roth } 12759e8aded4SMichael Roth 12769e8aded4SMichael Roth QTAILQ_FOREACH(mount, &mounts, next) { 12779e8aded4SMichael Roth logged = false; 1278c216e5adSMichael Roth fd = qemu_open(mount->dirname, O_RDONLY); 1279c216e5adSMichael Roth if (fd == -1) { 1280c216e5adSMichael Roth continue; 1281c216e5adSMichael Roth } 12829e8aded4SMichael Roth /* we have no way of knowing whether a filesystem was actually unfrozen 12839e8aded4SMichael Roth * as a result of a successful call to FITHAW, only that if an error 12849e8aded4SMichael Roth * was returned the filesystem was *not* unfrozen by that particular 12859e8aded4SMichael Roth * call. 12869e8aded4SMichael Roth * 1287a31f0531SJim Meyering * since multiple preceding FIFREEZEs require multiple calls to FITHAW 12889e8aded4SMichael Roth * to unfreeze, continuing issuing FITHAW until an error is returned, 12899e8aded4SMichael Roth * in which case either the filesystem is in an unfreezable state, or, 12909e8aded4SMichael Roth * more likely, it was thawed previously (and remains so afterward). 12919e8aded4SMichael Roth * 12929e8aded4SMichael Roth * also, since the most recent successful call is the one that did 12939e8aded4SMichael Roth * the actual unfreeze, we can use this to provide an accurate count 12949e8aded4SMichael Roth * of the number of filesystems unfrozen by guest-fsfreeze-thaw, which 12959e8aded4SMichael Roth * may * be useful for determining whether a filesystem was unfrozen 12969e8aded4SMichael Roth * during the freeze/thaw phase by a process other than qemu-ga. 12979e8aded4SMichael Roth */ 12989e8aded4SMichael Roth do { 1299c216e5adSMichael Roth ret = ioctl(fd, FITHAW); 13009e8aded4SMichael Roth if (ret == 0 && !logged) { 1301c216e5adSMichael Roth i++; 13029e8aded4SMichael Roth logged = true; 13039e8aded4SMichael Roth } 13049e8aded4SMichael Roth } while (ret == 0); 13059e8aded4SMichael Roth close(fd); 1306c216e5adSMichael Roth } 1307c216e5adSMichael Roth 1308f22d85e9SMichael Roth ga_unset_frozen(ga_state); 1309af02203fSPaolo Bonzini free_fs_mount_list(&mounts); 1310ec0f694cSTomoki Sekiyama 131177dbc81bSMarkus Armbruster execute_fsfreeze_hook(FSFREEZE_HOOK_THAW, errp); 1312ec0f694cSTomoki Sekiyama 1313c216e5adSMichael Roth return i; 1314c216e5adSMichael Roth } 1315c216e5adSMichael Roth 1316c216e5adSMichael Roth static void guest_fsfreeze_cleanup(void) 1317c216e5adSMichael Roth { 1318c216e5adSMichael Roth Error *err = NULL; 1319c216e5adSMichael Roth 1320f22d85e9SMichael Roth if (ga_is_frozen(ga_state) == GUEST_FSFREEZE_STATUS_FROZEN) { 13216f686749SMarkus Armbruster qmp_guest_fsfreeze_thaw(&err); 13226f686749SMarkus Armbruster if (err) { 13236f686749SMarkus Armbruster slog("failed to clean up frozen filesystems: %s", 13246f686749SMarkus Armbruster error_get_pretty(err)); 13256f686749SMarkus Armbruster error_free(err); 1326c216e5adSMichael Roth } 1327c216e5adSMichael Roth } 1328c216e5adSMichael Roth } 1329e72c3f2eSMichael Roth #endif /* CONFIG_FSFREEZE */ 1330c216e5adSMichael Roth 1331eab5fd59SPaolo Bonzini #if defined(CONFIG_FSTRIM) 1332eab5fd59SPaolo Bonzini /* 1333eab5fd59SPaolo Bonzini * Walk list of mounted file systems in the guest, and trim them. 1334eab5fd59SPaolo Bonzini */ 1335e82855d9SJustin Ossevoort GuestFilesystemTrimResponse * 1336e82855d9SJustin Ossevoort qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **errp) 1337eab5fd59SPaolo Bonzini { 1338e82855d9SJustin Ossevoort GuestFilesystemTrimResponse *response; 1339e82855d9SJustin Ossevoort GuestFilesystemTrimResultList *list; 1340e82855d9SJustin Ossevoort GuestFilesystemTrimResult *result; 1341eab5fd59SPaolo Bonzini int ret = 0; 1342eab5fd59SPaolo Bonzini FsMountList mounts; 1343eab5fd59SPaolo Bonzini struct FsMount *mount; 1344eab5fd59SPaolo Bonzini int fd; 1345261551d1SLuiz Capitulino Error *local_err = NULL; 134673a652a1SJustin Ossevoort struct fstrim_range r; 1347eab5fd59SPaolo Bonzini 1348eab5fd59SPaolo Bonzini slog("guest-fstrim called"); 1349eab5fd59SPaolo Bonzini 1350eab5fd59SPaolo Bonzini QTAILQ_INIT(&mounts); 1351261551d1SLuiz Capitulino build_fs_mount_list(&mounts, &local_err); 135284d18f06SMarkus Armbruster if (local_err) { 135377dbc81bSMarkus Armbruster error_propagate(errp, local_err); 1354e82855d9SJustin Ossevoort return NULL; 1355eab5fd59SPaolo Bonzini } 1356eab5fd59SPaolo Bonzini 1357e82855d9SJustin Ossevoort response = g_malloc0(sizeof(*response)); 1358e82855d9SJustin Ossevoort 1359eab5fd59SPaolo Bonzini QTAILQ_FOREACH(mount, &mounts, next) { 1360e82855d9SJustin Ossevoort result = g_malloc0(sizeof(*result)); 1361e82855d9SJustin Ossevoort result->path = g_strdup(mount->dirname); 1362e82855d9SJustin Ossevoort 1363e82855d9SJustin Ossevoort list = g_malloc0(sizeof(*list)); 1364e82855d9SJustin Ossevoort list->value = result; 1365e82855d9SJustin Ossevoort list->next = response->paths; 1366e82855d9SJustin Ossevoort response->paths = list; 1367e82855d9SJustin Ossevoort 1368eab5fd59SPaolo Bonzini fd = qemu_open(mount->dirname, O_RDONLY); 1369eab5fd59SPaolo Bonzini if (fd == -1) { 1370e82855d9SJustin Ossevoort result->error = g_strdup_printf("failed to open: %s", 1371e82855d9SJustin Ossevoort strerror(errno)); 1372e82855d9SJustin Ossevoort result->has_error = true; 1373e82855d9SJustin Ossevoort continue; 1374eab5fd59SPaolo Bonzini } 1375eab5fd59SPaolo Bonzini 1376eab5fd59SPaolo Bonzini /* We try to cull filesytems we know won't work in advance, but other 1377eab5fd59SPaolo Bonzini * filesytems may not implement fstrim for less obvious reasons. These 1378e82855d9SJustin Ossevoort * will report EOPNOTSUPP; while in some other cases ENOTTY will be 1379e82855d9SJustin Ossevoort * reported (e.g. CD-ROMs). 1380e82855d9SJustin Ossevoort * Any other error means an unexpected error. 1381eab5fd59SPaolo Bonzini */ 138273a652a1SJustin Ossevoort r.start = 0; 138373a652a1SJustin Ossevoort r.len = -1; 138473a652a1SJustin Ossevoort r.minlen = has_minimum ? minimum : 0; 1385eab5fd59SPaolo Bonzini ret = ioctl(fd, FITRIM, &r); 1386eab5fd59SPaolo Bonzini if (ret == -1) { 1387e82855d9SJustin Ossevoort result->has_error = true; 1388e82855d9SJustin Ossevoort if (errno == ENOTTY || errno == EOPNOTSUPP) { 1389e82855d9SJustin Ossevoort result->error = g_strdup("trim not supported"); 1390e82855d9SJustin Ossevoort } else { 1391e82855d9SJustin Ossevoort result->error = g_strdup_printf("failed to trim: %s", 1392e82855d9SJustin Ossevoort strerror(errno)); 1393e82855d9SJustin Ossevoort } 1394eab5fd59SPaolo Bonzini close(fd); 1395e82855d9SJustin Ossevoort continue; 1396eab5fd59SPaolo Bonzini } 1397e82855d9SJustin Ossevoort 1398e82855d9SJustin Ossevoort result->has_minimum = true; 1399e82855d9SJustin Ossevoort result->minimum = r.minlen; 1400e82855d9SJustin Ossevoort result->has_trimmed = true; 1401e82855d9SJustin Ossevoort result->trimmed = r.len; 1402eab5fd59SPaolo Bonzini close(fd); 1403eab5fd59SPaolo Bonzini } 1404eab5fd59SPaolo Bonzini 1405eab5fd59SPaolo Bonzini free_fs_mount_list(&mounts); 1406e82855d9SJustin Ossevoort return response; 1407eab5fd59SPaolo Bonzini } 1408eab5fd59SPaolo Bonzini #endif /* CONFIG_FSTRIM */ 1409eab5fd59SPaolo Bonzini 1410eab5fd59SPaolo Bonzini 141111d0f125SLuiz Capitulino #define LINUX_SYS_STATE_FILE "/sys/power/state" 141211d0f125SLuiz Capitulino #define SUSPEND_SUPPORTED 0 141311d0f125SLuiz Capitulino #define SUSPEND_NOT_SUPPORTED 1 141411d0f125SLuiz Capitulino 141511d0f125SLuiz Capitulino static void bios_supports_mode(const char *pmutils_bin, const char *pmutils_arg, 141677dbc81bSMarkus Armbruster const char *sysfile_str, Error **errp) 141711d0f125SLuiz Capitulino { 14186b26e837SLuiz Capitulino Error *local_err = NULL; 141911d0f125SLuiz Capitulino char *pmutils_path; 14206b26e837SLuiz Capitulino pid_t pid; 1421dc8764f0SLuiz Capitulino int status; 142211d0f125SLuiz Capitulino 142311d0f125SLuiz Capitulino pmutils_path = g_find_program_in_path(pmutils_bin); 142411d0f125SLuiz Capitulino 142511d0f125SLuiz Capitulino pid = fork(); 142611d0f125SLuiz Capitulino if (!pid) { 1427dc8764f0SLuiz Capitulino char buf[32]; /* hopefully big enough */ 1428dc8764f0SLuiz Capitulino ssize_t ret; 1429dc8764f0SLuiz Capitulino int fd; 143011d0f125SLuiz Capitulino 143111d0f125SLuiz Capitulino setsid(); 143211d0f125SLuiz Capitulino reopen_fd_to_null(0); 143311d0f125SLuiz Capitulino reopen_fd_to_null(1); 143411d0f125SLuiz Capitulino reopen_fd_to_null(2); 143511d0f125SLuiz Capitulino 143611d0f125SLuiz Capitulino if (pmutils_path) { 143711d0f125SLuiz Capitulino execle(pmutils_path, pmutils_bin, pmutils_arg, NULL, environ); 143811d0f125SLuiz Capitulino } 143911d0f125SLuiz Capitulino 144011d0f125SLuiz Capitulino /* 144111d0f125SLuiz Capitulino * If we get here either pm-utils is not installed or execle() has 144211d0f125SLuiz Capitulino * failed. Let's try the manual method if the caller wants it. 144311d0f125SLuiz Capitulino */ 144411d0f125SLuiz Capitulino 144511d0f125SLuiz Capitulino if (!sysfile_str) { 144611d0f125SLuiz Capitulino _exit(SUSPEND_NOT_SUPPORTED); 144711d0f125SLuiz Capitulino } 144811d0f125SLuiz Capitulino 144911d0f125SLuiz Capitulino fd = open(LINUX_SYS_STATE_FILE, O_RDONLY); 145011d0f125SLuiz Capitulino if (fd < 0) { 145111d0f125SLuiz Capitulino _exit(SUSPEND_NOT_SUPPORTED); 145211d0f125SLuiz Capitulino } 145311d0f125SLuiz Capitulino 145411d0f125SLuiz Capitulino ret = read(fd, buf, sizeof(buf)-1); 145511d0f125SLuiz Capitulino if (ret <= 0) { 145611d0f125SLuiz Capitulino _exit(SUSPEND_NOT_SUPPORTED); 145711d0f125SLuiz Capitulino } 145811d0f125SLuiz Capitulino buf[ret] = '\0'; 145911d0f125SLuiz Capitulino 146011d0f125SLuiz Capitulino if (strstr(buf, sysfile_str)) { 146111d0f125SLuiz Capitulino _exit(SUSPEND_SUPPORTED); 146211d0f125SLuiz Capitulino } 146311d0f125SLuiz Capitulino 146411d0f125SLuiz Capitulino _exit(SUSPEND_NOT_SUPPORTED); 14656b26e837SLuiz Capitulino } else if (pid < 0) { 146677dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to create child process"); 14676b26e837SLuiz Capitulino goto out; 146811d0f125SLuiz Capitulino } 146911d0f125SLuiz Capitulino 14706b26e837SLuiz Capitulino ga_wait_child(pid, &status, &local_err); 147184d18f06SMarkus Armbruster if (local_err) { 147277dbc81bSMarkus Armbruster error_propagate(errp, local_err); 14736b26e837SLuiz Capitulino goto out; 147411d0f125SLuiz Capitulino } 147511d0f125SLuiz Capitulino 14766b26e837SLuiz Capitulino if (!WIFEXITED(status)) { 147777dbc81bSMarkus Armbruster error_setg(errp, "child process has terminated abnormally"); 14786b26e837SLuiz Capitulino goto out; 14796b26e837SLuiz Capitulino } 14806b26e837SLuiz Capitulino 1481dc8764f0SLuiz Capitulino switch (WEXITSTATUS(status)) { 1482dc8764f0SLuiz Capitulino case SUSPEND_SUPPORTED: 14836b26e837SLuiz Capitulino goto out; 1484dc8764f0SLuiz Capitulino case SUSPEND_NOT_SUPPORTED: 148577dbc81bSMarkus Armbruster error_setg(errp, 14866b26e837SLuiz Capitulino "the requested suspend mode is not supported by the guest"); 14876b26e837SLuiz Capitulino goto out; 1488dc8764f0SLuiz Capitulino default: 148977dbc81bSMarkus Armbruster error_setg(errp, 14906b26e837SLuiz Capitulino "the helper program '%s' returned an unexpected exit status" 14916b26e837SLuiz Capitulino " code (%d)", pmutils_path, WEXITSTATUS(status)); 14926b26e837SLuiz Capitulino goto out; 1493dc8764f0SLuiz Capitulino } 149411d0f125SLuiz Capitulino 14956b26e837SLuiz Capitulino out: 14966b26e837SLuiz Capitulino g_free(pmutils_path); 149711d0f125SLuiz Capitulino } 149811d0f125SLuiz Capitulino 149911d0f125SLuiz Capitulino static void guest_suspend(const char *pmutils_bin, const char *sysfile_str, 150077dbc81bSMarkus Armbruster Error **errp) 150111d0f125SLuiz Capitulino { 15027b376087SLuiz Capitulino Error *local_err = NULL; 150311d0f125SLuiz Capitulino char *pmutils_path; 15047b376087SLuiz Capitulino pid_t pid; 1505dc8764f0SLuiz Capitulino int status; 150611d0f125SLuiz Capitulino 150711d0f125SLuiz Capitulino pmutils_path = g_find_program_in_path(pmutils_bin); 150811d0f125SLuiz Capitulino 150911d0f125SLuiz Capitulino pid = fork(); 151011d0f125SLuiz Capitulino if (pid == 0) { 151111d0f125SLuiz Capitulino /* child */ 151211d0f125SLuiz Capitulino int fd; 151311d0f125SLuiz Capitulino 151411d0f125SLuiz Capitulino setsid(); 151511d0f125SLuiz Capitulino reopen_fd_to_null(0); 151611d0f125SLuiz Capitulino reopen_fd_to_null(1); 151711d0f125SLuiz Capitulino reopen_fd_to_null(2); 151811d0f125SLuiz Capitulino 151911d0f125SLuiz Capitulino if (pmutils_path) { 152011d0f125SLuiz Capitulino execle(pmutils_path, pmutils_bin, NULL, environ); 152111d0f125SLuiz Capitulino } 152211d0f125SLuiz Capitulino 152311d0f125SLuiz Capitulino /* 152411d0f125SLuiz Capitulino * If we get here either pm-utils is not installed or execle() has 152511d0f125SLuiz Capitulino * failed. Let's try the manual method if the caller wants it. 152611d0f125SLuiz Capitulino */ 152711d0f125SLuiz Capitulino 152811d0f125SLuiz Capitulino if (!sysfile_str) { 152911d0f125SLuiz Capitulino _exit(EXIT_FAILURE); 153011d0f125SLuiz Capitulino } 153111d0f125SLuiz Capitulino 153211d0f125SLuiz Capitulino fd = open(LINUX_SYS_STATE_FILE, O_WRONLY); 153311d0f125SLuiz Capitulino if (fd < 0) { 153411d0f125SLuiz Capitulino _exit(EXIT_FAILURE); 153511d0f125SLuiz Capitulino } 153611d0f125SLuiz Capitulino 153711d0f125SLuiz Capitulino if (write(fd, sysfile_str, strlen(sysfile_str)) < 0) { 153811d0f125SLuiz Capitulino _exit(EXIT_FAILURE); 153911d0f125SLuiz Capitulino } 154011d0f125SLuiz Capitulino 154111d0f125SLuiz Capitulino _exit(EXIT_SUCCESS); 15427b376087SLuiz Capitulino } else if (pid < 0) { 154377dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to create child process"); 15447b376087SLuiz Capitulino goto out; 154511d0f125SLuiz Capitulino } 154611d0f125SLuiz Capitulino 15477b376087SLuiz Capitulino ga_wait_child(pid, &status, &local_err); 154884d18f06SMarkus Armbruster if (local_err) { 154977dbc81bSMarkus Armbruster error_propagate(errp, local_err); 15507b376087SLuiz Capitulino goto out; 15517b376087SLuiz Capitulino } 15527b376087SLuiz Capitulino 15537b376087SLuiz Capitulino if (!WIFEXITED(status)) { 155477dbc81bSMarkus Armbruster error_setg(errp, "child process has terminated abnormally"); 15557b376087SLuiz Capitulino goto out; 15567b376087SLuiz Capitulino } 15577b376087SLuiz Capitulino 15587b376087SLuiz Capitulino if (WEXITSTATUS(status)) { 155977dbc81bSMarkus Armbruster error_setg(errp, "child process has failed to suspend"); 15607b376087SLuiz Capitulino goto out; 15617b376087SLuiz Capitulino } 15627b376087SLuiz Capitulino 15637b376087SLuiz Capitulino out: 156411d0f125SLuiz Capitulino g_free(pmutils_path); 156511d0f125SLuiz Capitulino } 156611d0f125SLuiz Capitulino 156777dbc81bSMarkus Armbruster void qmp_guest_suspend_disk(Error **errp) 156811d0f125SLuiz Capitulino { 15690f230bf7SMarkus Armbruster Error *local_err = NULL; 15700f230bf7SMarkus Armbruster 15710f230bf7SMarkus Armbruster bios_supports_mode("pm-is-supported", "--hibernate", "disk", &local_err); 15720f230bf7SMarkus Armbruster if (local_err) { 15730f230bf7SMarkus Armbruster error_propagate(errp, local_err); 157411d0f125SLuiz Capitulino return; 157511d0f125SLuiz Capitulino } 157611d0f125SLuiz Capitulino 157777dbc81bSMarkus Armbruster guest_suspend("pm-hibernate", "disk", errp); 157811d0f125SLuiz Capitulino } 157911d0f125SLuiz Capitulino 158077dbc81bSMarkus Armbruster void qmp_guest_suspend_ram(Error **errp) 1581fbf42210SLuiz Capitulino { 15820f230bf7SMarkus Armbruster Error *local_err = NULL; 15830f230bf7SMarkus Armbruster 15840f230bf7SMarkus Armbruster bios_supports_mode("pm-is-supported", "--suspend", "mem", &local_err); 15850f230bf7SMarkus Armbruster if (local_err) { 15860f230bf7SMarkus Armbruster error_propagate(errp, local_err); 1587fbf42210SLuiz Capitulino return; 1588fbf42210SLuiz Capitulino } 1589fbf42210SLuiz Capitulino 159077dbc81bSMarkus Armbruster guest_suspend("pm-suspend", "mem", errp); 1591fbf42210SLuiz Capitulino } 1592fbf42210SLuiz Capitulino 159377dbc81bSMarkus Armbruster void qmp_guest_suspend_hybrid(Error **errp) 159495f4f404SLuiz Capitulino { 15950f230bf7SMarkus Armbruster Error *local_err = NULL; 15960f230bf7SMarkus Armbruster 15970f230bf7SMarkus Armbruster bios_supports_mode("pm-is-supported", "--suspend-hybrid", NULL, 15980f230bf7SMarkus Armbruster &local_err); 15990f230bf7SMarkus Armbruster if (local_err) { 16000f230bf7SMarkus Armbruster error_propagate(errp, local_err); 160195f4f404SLuiz Capitulino return; 160295f4f404SLuiz Capitulino } 160395f4f404SLuiz Capitulino 160477dbc81bSMarkus Armbruster guest_suspend("pm-suspend-hybrid", NULL, errp); 160595f4f404SLuiz Capitulino } 160695f4f404SLuiz Capitulino 16073424fc9fSMichal Privoznik static GuestNetworkInterfaceList * 16083424fc9fSMichal Privoznik guest_find_interface(GuestNetworkInterfaceList *head, 16093424fc9fSMichal Privoznik const char *name) 16103424fc9fSMichal Privoznik { 16113424fc9fSMichal Privoznik for (; head; head = head->next) { 16123424fc9fSMichal Privoznik if (strcmp(head->value->name, name) == 0) { 16133424fc9fSMichal Privoznik break; 16143424fc9fSMichal Privoznik } 16153424fc9fSMichal Privoznik } 16163424fc9fSMichal Privoznik 16173424fc9fSMichal Privoznik return head; 16183424fc9fSMichal Privoznik } 16193424fc9fSMichal Privoznik 16203424fc9fSMichal Privoznik /* 16213424fc9fSMichal Privoznik * Build information about guest interfaces 16223424fc9fSMichal Privoznik */ 16233424fc9fSMichal Privoznik GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp) 16243424fc9fSMichal Privoznik { 16253424fc9fSMichal Privoznik GuestNetworkInterfaceList *head = NULL, *cur_item = NULL; 16263424fc9fSMichal Privoznik struct ifaddrs *ifap, *ifa; 16273424fc9fSMichal Privoznik 16283424fc9fSMichal Privoznik if (getifaddrs(&ifap) < 0) { 1629878a0ae0SLuiz Capitulino error_setg_errno(errp, errno, "getifaddrs failed"); 16303424fc9fSMichal Privoznik goto error; 16313424fc9fSMichal Privoznik } 16323424fc9fSMichal Privoznik 16333424fc9fSMichal Privoznik for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 16343424fc9fSMichal Privoznik GuestNetworkInterfaceList *info; 16353424fc9fSMichal Privoznik GuestIpAddressList **address_list = NULL, *address_item = NULL; 16363424fc9fSMichal Privoznik char addr4[INET_ADDRSTRLEN]; 16373424fc9fSMichal Privoznik char addr6[INET6_ADDRSTRLEN]; 16383424fc9fSMichal Privoznik int sock; 16393424fc9fSMichal Privoznik struct ifreq ifr; 16403424fc9fSMichal Privoznik unsigned char *mac_addr; 16413424fc9fSMichal Privoznik void *p; 16423424fc9fSMichal Privoznik 16433424fc9fSMichal Privoznik g_debug("Processing %s interface", ifa->ifa_name); 16443424fc9fSMichal Privoznik 16453424fc9fSMichal Privoznik info = guest_find_interface(head, ifa->ifa_name); 16463424fc9fSMichal Privoznik 16473424fc9fSMichal Privoznik if (!info) { 16483424fc9fSMichal Privoznik info = g_malloc0(sizeof(*info)); 16493424fc9fSMichal Privoznik info->value = g_malloc0(sizeof(*info->value)); 16503424fc9fSMichal Privoznik info->value->name = g_strdup(ifa->ifa_name); 16513424fc9fSMichal Privoznik 16523424fc9fSMichal Privoznik if (!cur_item) { 16533424fc9fSMichal Privoznik head = cur_item = info; 16543424fc9fSMichal Privoznik } else { 16553424fc9fSMichal Privoznik cur_item->next = info; 16563424fc9fSMichal Privoznik cur_item = info; 16573424fc9fSMichal Privoznik } 16583424fc9fSMichal Privoznik } 16593424fc9fSMichal Privoznik 16603424fc9fSMichal Privoznik if (!info->value->has_hardware_address && 16613424fc9fSMichal Privoznik ifa->ifa_flags & SIOCGIFHWADDR) { 16623424fc9fSMichal Privoznik /* we haven't obtained HW address yet */ 16633424fc9fSMichal Privoznik sock = socket(PF_INET, SOCK_STREAM, 0); 16643424fc9fSMichal Privoznik if (sock == -1) { 1665878a0ae0SLuiz Capitulino error_setg_errno(errp, errno, "failed to create socket"); 16663424fc9fSMichal Privoznik goto error; 16673424fc9fSMichal Privoznik } 16683424fc9fSMichal Privoznik 16693424fc9fSMichal Privoznik memset(&ifr, 0, sizeof(ifr)); 16701ab516edSJim Meyering pstrcpy(ifr.ifr_name, IF_NAMESIZE, info->value->name); 16713424fc9fSMichal Privoznik if (ioctl(sock, SIOCGIFHWADDR, &ifr) == -1) { 1672878a0ae0SLuiz Capitulino error_setg_errno(errp, errno, 1673878a0ae0SLuiz Capitulino "failed to get MAC address of %s", 1674878a0ae0SLuiz Capitulino ifa->ifa_name); 167510a2158fSMarkus Armbruster close(sock); 16763424fc9fSMichal Privoznik goto error; 16773424fc9fSMichal Privoznik } 16783424fc9fSMichal Privoznik 167910a2158fSMarkus Armbruster close(sock); 16803424fc9fSMichal Privoznik mac_addr = (unsigned char *) &ifr.ifr_hwaddr.sa_data; 16813424fc9fSMichal Privoznik 1682e4ada482SStefan Weil info->value->hardware_address = 1683e4ada482SStefan Weil g_strdup_printf("%02x:%02x:%02x:%02x:%02x:%02x", 16843424fc9fSMichal Privoznik (int) mac_addr[0], (int) mac_addr[1], 16853424fc9fSMichal Privoznik (int) mac_addr[2], (int) mac_addr[3], 1686e4ada482SStefan Weil (int) mac_addr[4], (int) mac_addr[5]); 16873424fc9fSMichal Privoznik 16883424fc9fSMichal Privoznik info->value->has_hardware_address = true; 16893424fc9fSMichal Privoznik } 16903424fc9fSMichal Privoznik 16913424fc9fSMichal Privoznik if (ifa->ifa_addr && 16923424fc9fSMichal Privoznik ifa->ifa_addr->sa_family == AF_INET) { 16933424fc9fSMichal Privoznik /* interface with IPv4 address */ 16943424fc9fSMichal Privoznik p = &((struct sockaddr_in *)ifa->ifa_addr)->sin_addr; 16953424fc9fSMichal Privoznik if (!inet_ntop(AF_INET, p, addr4, sizeof(addr4))) { 1696878a0ae0SLuiz Capitulino error_setg_errno(errp, errno, "inet_ntop failed"); 16973424fc9fSMichal Privoznik goto error; 16983424fc9fSMichal Privoznik } 16993424fc9fSMichal Privoznik 170010a2158fSMarkus Armbruster address_item = g_malloc0(sizeof(*address_item)); 170110a2158fSMarkus Armbruster address_item->value = g_malloc0(sizeof(*address_item->value)); 17023424fc9fSMichal Privoznik address_item->value->ip_address = g_strdup(addr4); 17033424fc9fSMichal Privoznik address_item->value->ip_address_type = GUEST_IP_ADDRESS_TYPE_IPV4; 17043424fc9fSMichal Privoznik 17053424fc9fSMichal Privoznik if (ifa->ifa_netmask) { 17063424fc9fSMichal Privoznik /* Count the number of set bits in netmask. 17073424fc9fSMichal Privoznik * This is safe as '1' and '0' cannot be shuffled in netmask. */ 17083424fc9fSMichal Privoznik p = &((struct sockaddr_in *)ifa->ifa_netmask)->sin_addr; 17093424fc9fSMichal Privoznik address_item->value->prefix = ctpop32(((uint32_t *) p)[0]); 17103424fc9fSMichal Privoznik } 17113424fc9fSMichal Privoznik } else if (ifa->ifa_addr && 17123424fc9fSMichal Privoznik ifa->ifa_addr->sa_family == AF_INET6) { 17133424fc9fSMichal Privoznik /* interface with IPv6 address */ 17143424fc9fSMichal Privoznik p = &((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_addr; 17153424fc9fSMichal Privoznik if (!inet_ntop(AF_INET6, p, addr6, sizeof(addr6))) { 1716878a0ae0SLuiz Capitulino error_setg_errno(errp, errno, "inet_ntop failed"); 17173424fc9fSMichal Privoznik goto error; 17183424fc9fSMichal Privoznik } 17193424fc9fSMichal Privoznik 172010a2158fSMarkus Armbruster address_item = g_malloc0(sizeof(*address_item)); 172110a2158fSMarkus Armbruster address_item->value = g_malloc0(sizeof(*address_item->value)); 17223424fc9fSMichal Privoznik address_item->value->ip_address = g_strdup(addr6); 17233424fc9fSMichal Privoznik address_item->value->ip_address_type = GUEST_IP_ADDRESS_TYPE_IPV6; 17243424fc9fSMichal Privoznik 17253424fc9fSMichal Privoznik if (ifa->ifa_netmask) { 17263424fc9fSMichal Privoznik /* Count the number of set bits in netmask. 17273424fc9fSMichal Privoznik * This is safe as '1' and '0' cannot be shuffled in netmask. */ 17283424fc9fSMichal Privoznik p = &((struct sockaddr_in6 *)ifa->ifa_netmask)->sin6_addr; 17293424fc9fSMichal Privoznik address_item->value->prefix = 17303424fc9fSMichal Privoznik ctpop32(((uint32_t *) p)[0]) + 17313424fc9fSMichal Privoznik ctpop32(((uint32_t *) p)[1]) + 17323424fc9fSMichal Privoznik ctpop32(((uint32_t *) p)[2]) + 17333424fc9fSMichal Privoznik ctpop32(((uint32_t *) p)[3]); 17343424fc9fSMichal Privoznik } 17353424fc9fSMichal Privoznik } 17363424fc9fSMichal Privoznik 17373424fc9fSMichal Privoznik if (!address_item) { 17383424fc9fSMichal Privoznik continue; 17393424fc9fSMichal Privoznik } 17403424fc9fSMichal Privoznik 17413424fc9fSMichal Privoznik address_list = &info->value->ip_addresses; 17423424fc9fSMichal Privoznik 17433424fc9fSMichal Privoznik while (*address_list && (*address_list)->next) { 17443424fc9fSMichal Privoznik address_list = &(*address_list)->next; 17453424fc9fSMichal Privoznik } 17463424fc9fSMichal Privoznik 17473424fc9fSMichal Privoznik if (!*address_list) { 17483424fc9fSMichal Privoznik *address_list = address_item; 17493424fc9fSMichal Privoznik } else { 17503424fc9fSMichal Privoznik (*address_list)->next = address_item; 17513424fc9fSMichal Privoznik } 17523424fc9fSMichal Privoznik 17533424fc9fSMichal Privoznik info->value->has_ip_addresses = true; 17543424fc9fSMichal Privoznik 17553424fc9fSMichal Privoznik 17563424fc9fSMichal Privoznik } 17573424fc9fSMichal Privoznik 17583424fc9fSMichal Privoznik freeifaddrs(ifap); 17593424fc9fSMichal Privoznik return head; 17603424fc9fSMichal Privoznik 17613424fc9fSMichal Privoznik error: 17623424fc9fSMichal Privoznik freeifaddrs(ifap); 17633424fc9fSMichal Privoznik qapi_free_GuestNetworkInterfaceList(head); 17643424fc9fSMichal Privoznik return NULL; 17653424fc9fSMichal Privoznik } 17663424fc9fSMichal Privoznik 176777dbc81bSMarkus Armbruster #define SYSCONF_EXACT(name, errp) sysconf_exact((name), #name, (errp)) 1768d2baff62SLaszlo Ersek 176977dbc81bSMarkus Armbruster static long sysconf_exact(int name, const char *name_str, Error **errp) 1770d2baff62SLaszlo Ersek { 1771d2baff62SLaszlo Ersek long ret; 1772d2baff62SLaszlo Ersek 1773d2baff62SLaszlo Ersek errno = 0; 1774d2baff62SLaszlo Ersek ret = sysconf(name); 1775d2baff62SLaszlo Ersek if (ret == -1) { 1776d2baff62SLaszlo Ersek if (errno == 0) { 177777dbc81bSMarkus Armbruster error_setg(errp, "sysconf(%s): value indefinite", name_str); 1778d2baff62SLaszlo Ersek } else { 177977dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "sysconf(%s)", name_str); 1780d2baff62SLaszlo Ersek } 1781d2baff62SLaszlo Ersek } 1782d2baff62SLaszlo Ersek return ret; 1783d2baff62SLaszlo Ersek } 1784d2baff62SLaszlo Ersek 1785d2baff62SLaszlo Ersek /* Transfer online/offline status between @vcpu and the guest system. 1786d2baff62SLaszlo Ersek * 1787d2baff62SLaszlo Ersek * On input either @errp or *@errp must be NULL. 1788d2baff62SLaszlo Ersek * 1789d2baff62SLaszlo Ersek * In system-to-@vcpu direction, the following @vcpu fields are accessed: 1790d2baff62SLaszlo Ersek * - R: vcpu->logical_id 1791d2baff62SLaszlo Ersek * - W: vcpu->online 1792d2baff62SLaszlo Ersek * - W: vcpu->can_offline 1793d2baff62SLaszlo Ersek * 1794d2baff62SLaszlo Ersek * In @vcpu-to-system direction, the following @vcpu fields are accessed: 1795d2baff62SLaszlo Ersek * - R: vcpu->logical_id 1796d2baff62SLaszlo Ersek * - R: vcpu->online 1797d2baff62SLaszlo Ersek * 1798d2baff62SLaszlo Ersek * Written members remain unmodified on error. 1799d2baff62SLaszlo Ersek */ 1800d2baff62SLaszlo Ersek static void transfer_vcpu(GuestLogicalProcessor *vcpu, bool sys2vcpu, 1801d2baff62SLaszlo Ersek Error **errp) 1802d2baff62SLaszlo Ersek { 1803d2baff62SLaszlo Ersek char *dirpath; 1804d2baff62SLaszlo Ersek int dirfd; 1805d2baff62SLaszlo Ersek 1806d2baff62SLaszlo Ersek dirpath = g_strdup_printf("/sys/devices/system/cpu/cpu%" PRId64 "/", 1807d2baff62SLaszlo Ersek vcpu->logical_id); 1808d2baff62SLaszlo Ersek dirfd = open(dirpath, O_RDONLY | O_DIRECTORY); 1809d2baff62SLaszlo Ersek if (dirfd == -1) { 1810d2baff62SLaszlo Ersek error_setg_errno(errp, errno, "open(\"%s\")", dirpath); 1811d2baff62SLaszlo Ersek } else { 1812d2baff62SLaszlo Ersek static const char fn[] = "online"; 1813d2baff62SLaszlo Ersek int fd; 1814d2baff62SLaszlo Ersek int res; 1815d2baff62SLaszlo Ersek 1816d2baff62SLaszlo Ersek fd = openat(dirfd, fn, sys2vcpu ? O_RDONLY : O_RDWR); 1817d2baff62SLaszlo Ersek if (fd == -1) { 1818d2baff62SLaszlo Ersek if (errno != ENOENT) { 1819d2baff62SLaszlo Ersek error_setg_errno(errp, errno, "open(\"%s/%s\")", dirpath, fn); 1820d2baff62SLaszlo Ersek } else if (sys2vcpu) { 1821d2baff62SLaszlo Ersek vcpu->online = true; 1822d2baff62SLaszlo Ersek vcpu->can_offline = false; 1823d2baff62SLaszlo Ersek } else if (!vcpu->online) { 1824d2baff62SLaszlo Ersek error_setg(errp, "logical processor #%" PRId64 " can't be " 1825d2baff62SLaszlo Ersek "offlined", vcpu->logical_id); 1826d2baff62SLaszlo Ersek } /* otherwise pretend successful re-onlining */ 1827d2baff62SLaszlo Ersek } else { 1828d2baff62SLaszlo Ersek unsigned char status; 1829d2baff62SLaszlo Ersek 1830d2baff62SLaszlo Ersek res = pread(fd, &status, 1, 0); 1831d2baff62SLaszlo Ersek if (res == -1) { 1832d2baff62SLaszlo Ersek error_setg_errno(errp, errno, "pread(\"%s/%s\")", dirpath, fn); 1833d2baff62SLaszlo Ersek } else if (res == 0) { 1834d2baff62SLaszlo Ersek error_setg(errp, "pread(\"%s/%s\"): unexpected EOF", dirpath, 1835d2baff62SLaszlo Ersek fn); 1836d2baff62SLaszlo Ersek } else if (sys2vcpu) { 1837d2baff62SLaszlo Ersek vcpu->online = (status != '0'); 1838d2baff62SLaszlo Ersek vcpu->can_offline = true; 1839d2baff62SLaszlo Ersek } else if (vcpu->online != (status != '0')) { 1840d2baff62SLaszlo Ersek status = '0' + vcpu->online; 1841d2baff62SLaszlo Ersek if (pwrite(fd, &status, 1, 0) == -1) { 1842d2baff62SLaszlo Ersek error_setg_errno(errp, errno, "pwrite(\"%s/%s\")", dirpath, 1843d2baff62SLaszlo Ersek fn); 1844d2baff62SLaszlo Ersek } 1845d2baff62SLaszlo Ersek } /* otherwise pretend successful re-(on|off)-lining */ 1846d2baff62SLaszlo Ersek 1847d2baff62SLaszlo Ersek res = close(fd); 1848d2baff62SLaszlo Ersek g_assert(res == 0); 1849d2baff62SLaszlo Ersek } 1850d2baff62SLaszlo Ersek 1851d2baff62SLaszlo Ersek res = close(dirfd); 1852d2baff62SLaszlo Ersek g_assert(res == 0); 1853d2baff62SLaszlo Ersek } 1854d2baff62SLaszlo Ersek 1855d2baff62SLaszlo Ersek g_free(dirpath); 1856d2baff62SLaszlo Ersek } 1857d2baff62SLaszlo Ersek 1858d2baff62SLaszlo Ersek GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp) 1859d2baff62SLaszlo Ersek { 1860d2baff62SLaszlo Ersek int64_t current; 1861d2baff62SLaszlo Ersek GuestLogicalProcessorList *head, **link; 1862d2baff62SLaszlo Ersek long sc_max; 1863d2baff62SLaszlo Ersek Error *local_err = NULL; 1864d2baff62SLaszlo Ersek 1865d2baff62SLaszlo Ersek current = 0; 1866d2baff62SLaszlo Ersek head = NULL; 1867d2baff62SLaszlo Ersek link = &head; 1868d2baff62SLaszlo Ersek sc_max = SYSCONF_EXACT(_SC_NPROCESSORS_CONF, &local_err); 1869d2baff62SLaszlo Ersek 1870d2baff62SLaszlo Ersek while (local_err == NULL && current < sc_max) { 1871d2baff62SLaszlo Ersek GuestLogicalProcessor *vcpu; 1872d2baff62SLaszlo Ersek GuestLogicalProcessorList *entry; 1873d2baff62SLaszlo Ersek 1874d2baff62SLaszlo Ersek vcpu = g_malloc0(sizeof *vcpu); 1875d2baff62SLaszlo Ersek vcpu->logical_id = current++; 1876d2baff62SLaszlo Ersek vcpu->has_can_offline = true; /* lolspeak ftw */ 1877d2baff62SLaszlo Ersek transfer_vcpu(vcpu, true, &local_err); 1878d2baff62SLaszlo Ersek 1879d2baff62SLaszlo Ersek entry = g_malloc0(sizeof *entry); 1880d2baff62SLaszlo Ersek entry->value = vcpu; 1881d2baff62SLaszlo Ersek 1882d2baff62SLaszlo Ersek *link = entry; 1883d2baff62SLaszlo Ersek link = &entry->next; 1884d2baff62SLaszlo Ersek } 1885d2baff62SLaszlo Ersek 1886d2baff62SLaszlo Ersek if (local_err == NULL) { 1887d2baff62SLaszlo Ersek /* there's no guest with zero VCPUs */ 1888d2baff62SLaszlo Ersek g_assert(head != NULL); 1889d2baff62SLaszlo Ersek return head; 1890d2baff62SLaszlo Ersek } 1891d2baff62SLaszlo Ersek 1892d2baff62SLaszlo Ersek qapi_free_GuestLogicalProcessorList(head); 1893d2baff62SLaszlo Ersek error_propagate(errp, local_err); 1894d2baff62SLaszlo Ersek return NULL; 1895d2baff62SLaszlo Ersek } 1896d2baff62SLaszlo Ersek 1897cbb65fc2SLaszlo Ersek int64_t qmp_guest_set_vcpus(GuestLogicalProcessorList *vcpus, Error **errp) 1898cbb65fc2SLaszlo Ersek { 1899cbb65fc2SLaszlo Ersek int64_t processed; 1900cbb65fc2SLaszlo Ersek Error *local_err = NULL; 1901cbb65fc2SLaszlo Ersek 1902cbb65fc2SLaszlo Ersek processed = 0; 1903cbb65fc2SLaszlo Ersek while (vcpus != NULL) { 1904cbb65fc2SLaszlo Ersek transfer_vcpu(vcpus->value, false, &local_err); 1905cbb65fc2SLaszlo Ersek if (local_err != NULL) { 1906cbb65fc2SLaszlo Ersek break; 1907cbb65fc2SLaszlo Ersek } 1908cbb65fc2SLaszlo Ersek ++processed; 1909cbb65fc2SLaszlo Ersek vcpus = vcpus->next; 1910cbb65fc2SLaszlo Ersek } 1911cbb65fc2SLaszlo Ersek 1912cbb65fc2SLaszlo Ersek if (local_err != NULL) { 1913cbb65fc2SLaszlo Ersek if (processed == 0) { 1914cbb65fc2SLaszlo Ersek error_propagate(errp, local_err); 1915cbb65fc2SLaszlo Ersek } else { 1916cbb65fc2SLaszlo Ersek error_free(local_err); 1917cbb65fc2SLaszlo Ersek } 1918cbb65fc2SLaszlo Ersek } 1919cbb65fc2SLaszlo Ersek 1920cbb65fc2SLaszlo Ersek return processed; 1921cbb65fc2SLaszlo Ersek } 1922cbb65fc2SLaszlo Ersek 1923215a2771SDaniel P. Berrange void qmp_guest_set_user_password(const char *username, 1924215a2771SDaniel P. Berrange const char *password, 1925215a2771SDaniel P. Berrange bool crypted, 1926215a2771SDaniel P. Berrange Error **errp) 1927215a2771SDaniel P. Berrange { 1928215a2771SDaniel P. Berrange Error *local_err = NULL; 1929215a2771SDaniel P. Berrange char *passwd_path = NULL; 1930215a2771SDaniel P. Berrange pid_t pid; 1931215a2771SDaniel P. Berrange int status; 1932215a2771SDaniel P. Berrange int datafd[2] = { -1, -1 }; 1933215a2771SDaniel P. Berrange char *rawpasswddata = NULL; 1934215a2771SDaniel P. Berrange size_t rawpasswdlen; 1935215a2771SDaniel P. Berrange char *chpasswddata = NULL; 1936215a2771SDaniel P. Berrange size_t chpasswdlen; 1937215a2771SDaniel P. Berrange 1938215a2771SDaniel P. Berrange rawpasswddata = (char *)g_base64_decode(password, &rawpasswdlen); 1939215a2771SDaniel P. Berrange rawpasswddata = g_renew(char, rawpasswddata, rawpasswdlen + 1); 1940215a2771SDaniel P. Berrange rawpasswddata[rawpasswdlen] = '\0'; 1941215a2771SDaniel P. Berrange 1942215a2771SDaniel P. Berrange if (strchr(rawpasswddata, '\n')) { 1943215a2771SDaniel P. Berrange error_setg(errp, "forbidden characters in raw password"); 1944215a2771SDaniel P. Berrange goto out; 1945215a2771SDaniel P. Berrange } 1946215a2771SDaniel P. Berrange 1947215a2771SDaniel P. Berrange if (strchr(username, '\n') || 1948215a2771SDaniel P. Berrange strchr(username, ':')) { 1949215a2771SDaniel P. Berrange error_setg(errp, "forbidden characters in username"); 1950215a2771SDaniel P. Berrange goto out; 1951215a2771SDaniel P. Berrange } 1952215a2771SDaniel P. Berrange 1953215a2771SDaniel P. Berrange chpasswddata = g_strdup_printf("%s:%s\n", username, rawpasswddata); 1954215a2771SDaniel P. Berrange chpasswdlen = strlen(chpasswddata); 1955215a2771SDaniel P. Berrange 1956215a2771SDaniel P. Berrange passwd_path = g_find_program_in_path("chpasswd"); 1957215a2771SDaniel P. Berrange 1958215a2771SDaniel P. Berrange if (!passwd_path) { 1959215a2771SDaniel P. Berrange error_setg(errp, "cannot find 'passwd' program in PATH"); 1960215a2771SDaniel P. Berrange goto out; 1961215a2771SDaniel P. Berrange } 1962215a2771SDaniel P. Berrange 1963215a2771SDaniel P. Berrange if (pipe(datafd) < 0) { 1964215a2771SDaniel P. Berrange error_setg(errp, "cannot create pipe FDs"); 1965215a2771SDaniel P. Berrange goto out; 1966215a2771SDaniel P. Berrange } 1967215a2771SDaniel P. Berrange 1968215a2771SDaniel P. Berrange pid = fork(); 1969215a2771SDaniel P. Berrange if (pid == 0) { 1970215a2771SDaniel P. Berrange close(datafd[1]); 1971215a2771SDaniel P. Berrange /* child */ 1972215a2771SDaniel P. Berrange setsid(); 1973215a2771SDaniel P. Berrange dup2(datafd[0], 0); 1974215a2771SDaniel P. Berrange reopen_fd_to_null(1); 1975215a2771SDaniel P. Berrange reopen_fd_to_null(2); 1976215a2771SDaniel P. Berrange 1977215a2771SDaniel P. Berrange if (crypted) { 1978215a2771SDaniel P. Berrange execle(passwd_path, "chpasswd", "-e", NULL, environ); 1979215a2771SDaniel P. Berrange } else { 1980215a2771SDaniel P. Berrange execle(passwd_path, "chpasswd", NULL, environ); 1981215a2771SDaniel P. Berrange } 1982215a2771SDaniel P. Berrange _exit(EXIT_FAILURE); 1983215a2771SDaniel P. Berrange } else if (pid < 0) { 1984215a2771SDaniel P. Berrange error_setg_errno(errp, errno, "failed to create child process"); 1985215a2771SDaniel P. Berrange goto out; 1986215a2771SDaniel P. Berrange } 1987215a2771SDaniel P. Berrange close(datafd[0]); 1988215a2771SDaniel P. Berrange datafd[0] = -1; 1989215a2771SDaniel P. Berrange 1990215a2771SDaniel P. Berrange if (qemu_write_full(datafd[1], chpasswddata, chpasswdlen) != chpasswdlen) { 1991215a2771SDaniel P. Berrange error_setg_errno(errp, errno, "cannot write new account password"); 1992215a2771SDaniel P. Berrange goto out; 1993215a2771SDaniel P. Berrange } 1994215a2771SDaniel P. Berrange close(datafd[1]); 1995215a2771SDaniel P. Berrange datafd[1] = -1; 1996215a2771SDaniel P. Berrange 1997215a2771SDaniel P. Berrange ga_wait_child(pid, &status, &local_err); 1998215a2771SDaniel P. Berrange if (local_err) { 1999215a2771SDaniel P. Berrange error_propagate(errp, local_err); 2000215a2771SDaniel P. Berrange goto out; 2001215a2771SDaniel P. Berrange } 2002215a2771SDaniel P. Berrange 2003215a2771SDaniel P. Berrange if (!WIFEXITED(status)) { 2004215a2771SDaniel P. Berrange error_setg(errp, "child process has terminated abnormally"); 2005215a2771SDaniel P. Berrange goto out; 2006215a2771SDaniel P. Berrange } 2007215a2771SDaniel P. Berrange 2008215a2771SDaniel P. Berrange if (WEXITSTATUS(status)) { 2009215a2771SDaniel P. Berrange error_setg(errp, "child process has failed to set user password"); 2010215a2771SDaniel P. Berrange goto out; 2011215a2771SDaniel P. Berrange } 2012215a2771SDaniel P. Berrange 2013215a2771SDaniel P. Berrange out: 2014215a2771SDaniel P. Berrange g_free(chpasswddata); 2015215a2771SDaniel P. Berrange g_free(rawpasswddata); 2016215a2771SDaniel P. Berrange g_free(passwd_path); 2017215a2771SDaniel P. Berrange if (datafd[0] != -1) { 2018215a2771SDaniel P. Berrange close(datafd[0]); 2019215a2771SDaniel P. Berrange } 2020215a2771SDaniel P. Berrange if (datafd[1] != -1) { 2021215a2771SDaniel P. Berrange close(datafd[1]); 2022215a2771SDaniel P. Berrange } 2023215a2771SDaniel P. Berrange } 2024215a2771SDaniel P. Berrange 2025bd240fcaSzhanghailiang static void ga_read_sysfs_file(int dirfd, const char *pathname, char *buf, 2026bd240fcaSzhanghailiang int size, Error **errp) 2027bd240fcaSzhanghailiang { 2028bd240fcaSzhanghailiang int fd; 2029bd240fcaSzhanghailiang int res; 2030bd240fcaSzhanghailiang 2031bd240fcaSzhanghailiang errno = 0; 2032bd240fcaSzhanghailiang fd = openat(dirfd, pathname, O_RDONLY); 2033bd240fcaSzhanghailiang if (fd == -1) { 2034bd240fcaSzhanghailiang error_setg_errno(errp, errno, "open sysfs file \"%s\"", pathname); 2035bd240fcaSzhanghailiang return; 2036bd240fcaSzhanghailiang } 2037bd240fcaSzhanghailiang 2038bd240fcaSzhanghailiang res = pread(fd, buf, size, 0); 2039bd240fcaSzhanghailiang if (res == -1) { 2040bd240fcaSzhanghailiang error_setg_errno(errp, errno, "pread sysfs file \"%s\"", pathname); 2041bd240fcaSzhanghailiang } else if (res == 0) { 2042bd240fcaSzhanghailiang error_setg(errp, "pread sysfs file \"%s\": unexpected EOF", pathname); 2043bd240fcaSzhanghailiang } 2044bd240fcaSzhanghailiang close(fd); 2045bd240fcaSzhanghailiang } 2046bd240fcaSzhanghailiang 2047bd240fcaSzhanghailiang static void ga_write_sysfs_file(int dirfd, const char *pathname, 2048bd240fcaSzhanghailiang const char *buf, int size, Error **errp) 2049bd240fcaSzhanghailiang { 2050bd240fcaSzhanghailiang int fd; 2051bd240fcaSzhanghailiang 2052bd240fcaSzhanghailiang errno = 0; 2053bd240fcaSzhanghailiang fd = openat(dirfd, pathname, O_WRONLY); 2054bd240fcaSzhanghailiang if (fd == -1) { 2055bd240fcaSzhanghailiang error_setg_errno(errp, errno, "open sysfs file \"%s\"", pathname); 2056bd240fcaSzhanghailiang return; 2057bd240fcaSzhanghailiang } 2058bd240fcaSzhanghailiang 2059bd240fcaSzhanghailiang if (pwrite(fd, buf, size, 0) == -1) { 2060bd240fcaSzhanghailiang error_setg_errno(errp, errno, "pwrite sysfs file \"%s\"", pathname); 2061bd240fcaSzhanghailiang } 2062bd240fcaSzhanghailiang 2063bd240fcaSzhanghailiang close(fd); 2064bd240fcaSzhanghailiang } 2065bd240fcaSzhanghailiang 2066bd240fcaSzhanghailiang /* Transfer online/offline status between @mem_blk and the guest system. 2067bd240fcaSzhanghailiang * 2068bd240fcaSzhanghailiang * On input either @errp or *@errp must be NULL. 2069bd240fcaSzhanghailiang * 2070bd240fcaSzhanghailiang * In system-to-@mem_blk direction, the following @mem_blk fields are accessed: 2071bd240fcaSzhanghailiang * - R: mem_blk->phys_index 2072bd240fcaSzhanghailiang * - W: mem_blk->online 2073bd240fcaSzhanghailiang * - W: mem_blk->can_offline 2074bd240fcaSzhanghailiang * 2075bd240fcaSzhanghailiang * In @mem_blk-to-system direction, the following @mem_blk fields are accessed: 2076bd240fcaSzhanghailiang * - R: mem_blk->phys_index 2077bd240fcaSzhanghailiang * - R: mem_blk->online 2078bd240fcaSzhanghailiang *- R: mem_blk->can_offline 2079bd240fcaSzhanghailiang * Written members remain unmodified on error. 2080bd240fcaSzhanghailiang */ 2081bd240fcaSzhanghailiang static void transfer_memory_block(GuestMemoryBlock *mem_blk, bool sys2memblk, 2082bd240fcaSzhanghailiang GuestMemoryBlockResponse *result, 2083bd240fcaSzhanghailiang Error **errp) 2084bd240fcaSzhanghailiang { 2085bd240fcaSzhanghailiang char *dirpath; 2086bd240fcaSzhanghailiang int dirfd; 2087bd240fcaSzhanghailiang char *status; 2088bd240fcaSzhanghailiang Error *local_err = NULL; 2089bd240fcaSzhanghailiang 2090bd240fcaSzhanghailiang if (!sys2memblk) { 2091bd240fcaSzhanghailiang DIR *dp; 2092bd240fcaSzhanghailiang 2093bd240fcaSzhanghailiang if (!result) { 2094bd240fcaSzhanghailiang error_setg(errp, "Internal error, 'result' should not be NULL"); 2095bd240fcaSzhanghailiang return; 2096bd240fcaSzhanghailiang } 2097bd240fcaSzhanghailiang errno = 0; 2098bd240fcaSzhanghailiang dp = opendir("/sys/devices/system/memory/"); 2099bd240fcaSzhanghailiang /* if there is no 'memory' directory in sysfs, 2100bd240fcaSzhanghailiang * we think this VM does not support online/offline memory block, 2101bd240fcaSzhanghailiang * any other solution? 2102bd240fcaSzhanghailiang */ 2103bd240fcaSzhanghailiang if (!dp && errno == ENOENT) { 2104bd240fcaSzhanghailiang result->response = 2105bd240fcaSzhanghailiang GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_NOT_SUPPORTED; 2106bd240fcaSzhanghailiang goto out1; 2107bd240fcaSzhanghailiang } 2108bd240fcaSzhanghailiang closedir(dp); 2109bd240fcaSzhanghailiang } 2110bd240fcaSzhanghailiang 2111bd240fcaSzhanghailiang dirpath = g_strdup_printf("/sys/devices/system/memory/memory%" PRId64 "/", 2112bd240fcaSzhanghailiang mem_blk->phys_index); 2113bd240fcaSzhanghailiang dirfd = open(dirpath, O_RDONLY | O_DIRECTORY); 2114bd240fcaSzhanghailiang if (dirfd == -1) { 2115bd240fcaSzhanghailiang if (sys2memblk) { 2116bd240fcaSzhanghailiang error_setg_errno(errp, errno, "open(\"%s\")", dirpath); 2117bd240fcaSzhanghailiang } else { 2118bd240fcaSzhanghailiang if (errno == ENOENT) { 2119bd240fcaSzhanghailiang result->response = GUEST_MEMORY_BLOCK_RESPONSE_TYPE_NOT_FOUND; 2120bd240fcaSzhanghailiang } else { 2121bd240fcaSzhanghailiang result->response = 2122bd240fcaSzhanghailiang GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_FAILED; 2123bd240fcaSzhanghailiang } 2124bd240fcaSzhanghailiang } 2125bd240fcaSzhanghailiang g_free(dirpath); 2126bd240fcaSzhanghailiang goto out1; 2127bd240fcaSzhanghailiang } 2128bd240fcaSzhanghailiang g_free(dirpath); 2129bd240fcaSzhanghailiang 2130bd240fcaSzhanghailiang status = g_malloc0(10); 2131bd240fcaSzhanghailiang ga_read_sysfs_file(dirfd, "state", status, 10, &local_err); 2132bd240fcaSzhanghailiang if (local_err) { 2133bd240fcaSzhanghailiang /* treat with sysfs file that not exist in old kernel */ 2134bd240fcaSzhanghailiang if (errno == ENOENT) { 2135bd240fcaSzhanghailiang error_free(local_err); 2136bd240fcaSzhanghailiang if (sys2memblk) { 2137bd240fcaSzhanghailiang mem_blk->online = true; 2138bd240fcaSzhanghailiang mem_blk->can_offline = false; 2139bd240fcaSzhanghailiang } else if (!mem_blk->online) { 2140bd240fcaSzhanghailiang result->response = 2141bd240fcaSzhanghailiang GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_NOT_SUPPORTED; 2142bd240fcaSzhanghailiang } 2143bd240fcaSzhanghailiang } else { 2144bd240fcaSzhanghailiang if (sys2memblk) { 2145bd240fcaSzhanghailiang error_propagate(errp, local_err); 2146bd240fcaSzhanghailiang } else { 2147bd240fcaSzhanghailiang result->response = 2148bd240fcaSzhanghailiang GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_FAILED; 2149bd240fcaSzhanghailiang } 2150bd240fcaSzhanghailiang } 2151bd240fcaSzhanghailiang goto out2; 2152bd240fcaSzhanghailiang } 2153bd240fcaSzhanghailiang 2154bd240fcaSzhanghailiang if (sys2memblk) { 2155bd240fcaSzhanghailiang char removable = '0'; 2156bd240fcaSzhanghailiang 2157bd240fcaSzhanghailiang mem_blk->online = (strncmp(status, "online", 6) == 0); 2158bd240fcaSzhanghailiang 2159bd240fcaSzhanghailiang ga_read_sysfs_file(dirfd, "removable", &removable, 1, &local_err); 2160bd240fcaSzhanghailiang if (local_err) { 216167cc32ebSVeres Lajos /* if no 'removable' file, it doesn't support offline mem blk */ 2162bd240fcaSzhanghailiang if (errno == ENOENT) { 2163bd240fcaSzhanghailiang error_free(local_err); 2164bd240fcaSzhanghailiang mem_blk->can_offline = false; 2165bd240fcaSzhanghailiang } else { 2166bd240fcaSzhanghailiang error_propagate(errp, local_err); 2167bd240fcaSzhanghailiang } 2168bd240fcaSzhanghailiang } else { 2169bd240fcaSzhanghailiang mem_blk->can_offline = (removable != '0'); 2170bd240fcaSzhanghailiang } 2171bd240fcaSzhanghailiang } else { 2172bd240fcaSzhanghailiang if (mem_blk->online != (strncmp(status, "online", 6) == 0)) { 2173bd240fcaSzhanghailiang char *new_state = mem_blk->online ? g_strdup("online") : 2174bd240fcaSzhanghailiang g_strdup("offline"); 2175bd240fcaSzhanghailiang 2176bd240fcaSzhanghailiang ga_write_sysfs_file(dirfd, "state", new_state, strlen(new_state), 2177bd240fcaSzhanghailiang &local_err); 2178bd240fcaSzhanghailiang g_free(new_state); 2179bd240fcaSzhanghailiang if (local_err) { 2180bd240fcaSzhanghailiang error_free(local_err); 2181bd240fcaSzhanghailiang result->response = 2182bd240fcaSzhanghailiang GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_FAILED; 2183bd240fcaSzhanghailiang goto out2; 2184bd240fcaSzhanghailiang } 2185bd240fcaSzhanghailiang 2186bd240fcaSzhanghailiang result->response = GUEST_MEMORY_BLOCK_RESPONSE_TYPE_SUCCESS; 2187bd240fcaSzhanghailiang result->has_error_code = false; 2188bd240fcaSzhanghailiang } /* otherwise pretend successful re-(on|off)-lining */ 2189bd240fcaSzhanghailiang } 2190bd240fcaSzhanghailiang g_free(status); 2191bd240fcaSzhanghailiang close(dirfd); 2192bd240fcaSzhanghailiang return; 2193bd240fcaSzhanghailiang 2194bd240fcaSzhanghailiang out2: 2195bd240fcaSzhanghailiang g_free(status); 2196bd240fcaSzhanghailiang close(dirfd); 2197bd240fcaSzhanghailiang out1: 2198bd240fcaSzhanghailiang if (!sys2memblk) { 2199bd240fcaSzhanghailiang result->has_error_code = true; 2200bd240fcaSzhanghailiang result->error_code = errno; 2201bd240fcaSzhanghailiang } 2202bd240fcaSzhanghailiang } 2203bd240fcaSzhanghailiang 2204a065aaa9Szhanghailiang GuestMemoryBlockList *qmp_guest_get_memory_blocks(Error **errp) 2205a065aaa9Szhanghailiang { 2206bd240fcaSzhanghailiang GuestMemoryBlockList *head, **link; 2207bd240fcaSzhanghailiang Error *local_err = NULL; 2208bd240fcaSzhanghailiang struct dirent *de; 2209bd240fcaSzhanghailiang DIR *dp; 2210bd240fcaSzhanghailiang 2211bd240fcaSzhanghailiang head = NULL; 2212bd240fcaSzhanghailiang link = &head; 2213bd240fcaSzhanghailiang 2214bd240fcaSzhanghailiang dp = opendir("/sys/devices/system/memory/"); 2215bd240fcaSzhanghailiang if (!dp) { 2216*f693fe6eSMichael Roth /* it's ok if this happens to be a system that doesn't expose 2217*f693fe6eSMichael Roth * memory blocks via sysfs, but otherwise we should report 2218*f693fe6eSMichael Roth * an error 2219*f693fe6eSMichael Roth */ 2220*f693fe6eSMichael Roth if (errno != ENOENT) { 2221bd240fcaSzhanghailiang error_setg_errno(errp, errno, "Can't open directory" 2222bd240fcaSzhanghailiang "\"/sys/devices/system/memory/\"\n"); 2223*f693fe6eSMichael Roth } 2224bd240fcaSzhanghailiang return NULL; 2225bd240fcaSzhanghailiang } 2226bd240fcaSzhanghailiang 2227bd240fcaSzhanghailiang /* Note: the phys_index of memory block may be discontinuous, 2228bd240fcaSzhanghailiang * this is because a memblk is the unit of the Sparse Memory design, which 2229bd240fcaSzhanghailiang * allows discontinuous memory ranges (ex. NUMA), so here we should 2230bd240fcaSzhanghailiang * traverse the memory block directory. 2231bd240fcaSzhanghailiang */ 2232bd240fcaSzhanghailiang while ((de = readdir(dp)) != NULL) { 2233bd240fcaSzhanghailiang GuestMemoryBlock *mem_blk; 2234bd240fcaSzhanghailiang GuestMemoryBlockList *entry; 2235bd240fcaSzhanghailiang 2236bd240fcaSzhanghailiang if ((strncmp(de->d_name, "memory", 6) != 0) || 2237bd240fcaSzhanghailiang !(de->d_type & DT_DIR)) { 2238bd240fcaSzhanghailiang continue; 2239bd240fcaSzhanghailiang } 2240bd240fcaSzhanghailiang 2241bd240fcaSzhanghailiang mem_blk = g_malloc0(sizeof *mem_blk); 2242bd240fcaSzhanghailiang /* The d_name is "memoryXXX", phys_index is block id, same as XXX */ 2243bd240fcaSzhanghailiang mem_blk->phys_index = strtoul(&de->d_name[6], NULL, 10); 2244bd240fcaSzhanghailiang mem_blk->has_can_offline = true; /* lolspeak ftw */ 2245bd240fcaSzhanghailiang transfer_memory_block(mem_blk, true, NULL, &local_err); 2246bd240fcaSzhanghailiang 2247bd240fcaSzhanghailiang entry = g_malloc0(sizeof *entry); 2248bd240fcaSzhanghailiang entry->value = mem_blk; 2249bd240fcaSzhanghailiang 2250bd240fcaSzhanghailiang *link = entry; 2251bd240fcaSzhanghailiang link = &entry->next; 2252bd240fcaSzhanghailiang } 2253bd240fcaSzhanghailiang 2254bd240fcaSzhanghailiang closedir(dp); 2255bd240fcaSzhanghailiang if (local_err == NULL) { 2256bd240fcaSzhanghailiang /* there's no guest with zero memory blocks */ 2257bd240fcaSzhanghailiang if (head == NULL) { 2258bd240fcaSzhanghailiang error_setg(errp, "guest reported zero memory blocks!"); 2259bd240fcaSzhanghailiang } 2260bd240fcaSzhanghailiang return head; 2261bd240fcaSzhanghailiang } 2262bd240fcaSzhanghailiang 2263bd240fcaSzhanghailiang qapi_free_GuestMemoryBlockList(head); 2264bd240fcaSzhanghailiang error_propagate(errp, local_err); 2265a065aaa9Szhanghailiang return NULL; 2266a065aaa9Szhanghailiang } 2267a065aaa9Szhanghailiang 2268a065aaa9Szhanghailiang GuestMemoryBlockResponseList * 2269a065aaa9Szhanghailiang qmp_guest_set_memory_blocks(GuestMemoryBlockList *mem_blks, Error **errp) 2270a065aaa9Szhanghailiang { 227132ca7927Szhanghailiang GuestMemoryBlockResponseList *head, **link; 227232ca7927Szhanghailiang Error *local_err = NULL; 227332ca7927Szhanghailiang 227432ca7927Szhanghailiang head = NULL; 227532ca7927Szhanghailiang link = &head; 227632ca7927Szhanghailiang 227732ca7927Szhanghailiang while (mem_blks != NULL) { 227832ca7927Szhanghailiang GuestMemoryBlockResponse *result; 227932ca7927Szhanghailiang GuestMemoryBlockResponseList *entry; 228032ca7927Szhanghailiang GuestMemoryBlock *current_mem_blk = mem_blks->value; 228132ca7927Szhanghailiang 228232ca7927Szhanghailiang result = g_malloc0(sizeof(*result)); 228332ca7927Szhanghailiang result->phys_index = current_mem_blk->phys_index; 228432ca7927Szhanghailiang transfer_memory_block(current_mem_blk, false, result, &local_err); 228532ca7927Szhanghailiang if (local_err) { /* should never happen */ 228632ca7927Szhanghailiang goto err; 228732ca7927Szhanghailiang } 228832ca7927Szhanghailiang entry = g_malloc0(sizeof *entry); 228932ca7927Szhanghailiang entry->value = result; 229032ca7927Szhanghailiang 229132ca7927Szhanghailiang *link = entry; 229232ca7927Szhanghailiang link = &entry->next; 229332ca7927Szhanghailiang mem_blks = mem_blks->next; 229432ca7927Szhanghailiang } 229532ca7927Szhanghailiang 229632ca7927Szhanghailiang return head; 229732ca7927Szhanghailiang err: 229832ca7927Szhanghailiang qapi_free_GuestMemoryBlockResponseList(head); 229932ca7927Szhanghailiang error_propagate(errp, local_err); 2300a065aaa9Szhanghailiang return NULL; 2301a065aaa9Szhanghailiang } 2302a065aaa9Szhanghailiang 2303a065aaa9Szhanghailiang GuestMemoryBlockInfo *qmp_guest_get_memory_block_info(Error **errp) 2304a065aaa9Szhanghailiang { 2305ef82b60bSzhanghailiang Error *local_err = NULL; 2306ef82b60bSzhanghailiang char *dirpath; 2307ef82b60bSzhanghailiang int dirfd; 2308ef82b60bSzhanghailiang char *buf; 2309ef82b60bSzhanghailiang GuestMemoryBlockInfo *info; 2310ef82b60bSzhanghailiang 2311ef82b60bSzhanghailiang dirpath = g_strdup_printf("/sys/devices/system/memory/"); 2312ef82b60bSzhanghailiang dirfd = open(dirpath, O_RDONLY | O_DIRECTORY); 2313ef82b60bSzhanghailiang if (dirfd == -1) { 2314ef82b60bSzhanghailiang error_setg_errno(errp, errno, "open(\"%s\")", dirpath); 2315ef82b60bSzhanghailiang g_free(dirpath); 2316a065aaa9Szhanghailiang return NULL; 2317a065aaa9Szhanghailiang } 2318ef82b60bSzhanghailiang g_free(dirpath); 2319ef82b60bSzhanghailiang 2320ef82b60bSzhanghailiang buf = g_malloc0(20); 2321ef82b60bSzhanghailiang ga_read_sysfs_file(dirfd, "block_size_bytes", buf, 20, &local_err); 23228ce1ee46SShannon Zhao close(dirfd); 2323ef82b60bSzhanghailiang if (local_err) { 2324ef82b60bSzhanghailiang g_free(buf); 2325ef82b60bSzhanghailiang error_propagate(errp, local_err); 2326ef82b60bSzhanghailiang return NULL; 2327ef82b60bSzhanghailiang } 2328ef82b60bSzhanghailiang 2329ef82b60bSzhanghailiang info = g_new0(GuestMemoryBlockInfo, 1); 2330ef82b60bSzhanghailiang info->size = strtol(buf, NULL, 16); /* the unit is bytes */ 2331ef82b60bSzhanghailiang 2332ef82b60bSzhanghailiang g_free(buf); 2333ef82b60bSzhanghailiang 2334ef82b60bSzhanghailiang return info; 2335ef82b60bSzhanghailiang } 2336a065aaa9Szhanghailiang 2337e72c3f2eSMichael Roth #else /* defined(__linux__) */ 2338e72c3f2eSMichael Roth 233977dbc81bSMarkus Armbruster void qmp_guest_suspend_disk(Error **errp) 2340e72c3f2eSMichael Roth { 2341c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2342e72c3f2eSMichael Roth } 2343e72c3f2eSMichael Roth 234477dbc81bSMarkus Armbruster void qmp_guest_suspend_ram(Error **errp) 2345e72c3f2eSMichael Roth { 2346c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2347e72c3f2eSMichael Roth } 2348e72c3f2eSMichael Roth 234977dbc81bSMarkus Armbruster void qmp_guest_suspend_hybrid(Error **errp) 2350e72c3f2eSMichael Roth { 2351c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2352e72c3f2eSMichael Roth } 2353e72c3f2eSMichael Roth 2354e72c3f2eSMichael Roth GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp) 2355e72c3f2eSMichael Roth { 2356c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2357e72c3f2eSMichael Roth return NULL; 2358e72c3f2eSMichael Roth } 2359e72c3f2eSMichael Roth 2360d2baff62SLaszlo Ersek GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp) 2361d2baff62SLaszlo Ersek { 2362c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2363d2baff62SLaszlo Ersek return NULL; 2364d2baff62SLaszlo Ersek } 2365d2baff62SLaszlo Ersek 2366cbb65fc2SLaszlo Ersek int64_t qmp_guest_set_vcpus(GuestLogicalProcessorList *vcpus, Error **errp) 2367cbb65fc2SLaszlo Ersek { 2368c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2369cbb65fc2SLaszlo Ersek return -1; 2370cbb65fc2SLaszlo Ersek } 2371cbb65fc2SLaszlo Ersek 2372215a2771SDaniel P. Berrange void qmp_guest_set_user_password(const char *username, 2373215a2771SDaniel P. Berrange const char *password, 2374215a2771SDaniel P. Berrange bool crypted, 2375215a2771SDaniel P. Berrange Error **errp) 2376215a2771SDaniel P. Berrange { 2377c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2378215a2771SDaniel P. Berrange } 2379215a2771SDaniel P. Berrange 2380a065aaa9Szhanghailiang GuestMemoryBlockList *qmp_guest_get_memory_blocks(Error **errp) 2381a065aaa9Szhanghailiang { 2382c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2383a065aaa9Szhanghailiang return NULL; 2384a065aaa9Szhanghailiang } 2385a065aaa9Szhanghailiang 2386a065aaa9Szhanghailiang GuestMemoryBlockResponseList * 2387a065aaa9Szhanghailiang qmp_guest_set_memory_blocks(GuestMemoryBlockList *mem_blks, Error **errp) 2388a065aaa9Szhanghailiang { 2389c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2390a065aaa9Szhanghailiang return NULL; 2391a065aaa9Szhanghailiang } 2392a065aaa9Szhanghailiang 2393a065aaa9Szhanghailiang GuestMemoryBlockInfo *qmp_guest_get_memory_block_info(Error **errp) 2394a065aaa9Szhanghailiang { 2395c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2396a065aaa9Szhanghailiang return NULL; 2397a065aaa9Szhanghailiang } 2398a065aaa9Szhanghailiang 2399e72c3f2eSMichael Roth #endif 2400e72c3f2eSMichael Roth 2401d35d4cb5SMichael Roth #if !defined(CONFIG_FSFREEZE) 2402d35d4cb5SMichael Roth 240346d4c572STomoki Sekiyama GuestFilesystemInfoList *qmp_guest_get_fsinfo(Error **errp) 240446d4c572STomoki Sekiyama { 2405c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 240646d4c572STomoki Sekiyama return NULL; 240746d4c572STomoki Sekiyama } 240846d4c572STomoki Sekiyama 240977dbc81bSMarkus Armbruster GuestFsfreezeStatus qmp_guest_fsfreeze_status(Error **errp) 2410d35d4cb5SMichael Roth { 2411c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2412d35d4cb5SMichael Roth 2413d35d4cb5SMichael Roth return 0; 2414d35d4cb5SMichael Roth } 2415d35d4cb5SMichael Roth 241677dbc81bSMarkus Armbruster int64_t qmp_guest_fsfreeze_freeze(Error **errp) 2417d35d4cb5SMichael Roth { 2418c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2419d35d4cb5SMichael Roth 2420d35d4cb5SMichael Roth return 0; 2421d35d4cb5SMichael Roth } 2422d35d4cb5SMichael Roth 2423e99bce20STomoki Sekiyama int64_t qmp_guest_fsfreeze_freeze_list(bool has_mountpoints, 2424e99bce20STomoki Sekiyama strList *mountpoints, 2425e99bce20STomoki Sekiyama Error **errp) 2426e99bce20STomoki Sekiyama { 2427c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2428e99bce20STomoki Sekiyama 2429e99bce20STomoki Sekiyama return 0; 2430e99bce20STomoki Sekiyama } 2431e99bce20STomoki Sekiyama 243277dbc81bSMarkus Armbruster int64_t qmp_guest_fsfreeze_thaw(Error **errp) 2433d35d4cb5SMichael Roth { 2434c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2435d35d4cb5SMichael Roth 2436d35d4cb5SMichael Roth return 0; 2437d35d4cb5SMichael Roth } 2438eab5fd59SPaolo Bonzini #endif /* CONFIG_FSFREEZE */ 2439d35d4cb5SMichael Roth 2440eab5fd59SPaolo Bonzini #if !defined(CONFIG_FSTRIM) 2441e82855d9SJustin Ossevoort GuestFilesystemTrimResponse * 2442e82855d9SJustin Ossevoort qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **errp) 2443eab5fd59SPaolo Bonzini { 2444c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2445e82855d9SJustin Ossevoort return NULL; 2446eab5fd59SPaolo Bonzini } 2447d35d4cb5SMichael Roth #endif 2448d35d4cb5SMichael Roth 24491281c08aSTomoki Sekiyama /* add unsupported commands to the blacklist */ 24501281c08aSTomoki Sekiyama GList *ga_command_blacklist_init(GList *blacklist) 24511281c08aSTomoki Sekiyama { 24521281c08aSTomoki Sekiyama #if !defined(__linux__) 24531281c08aSTomoki Sekiyama { 24541281c08aSTomoki Sekiyama const char *list[] = { 24551281c08aSTomoki Sekiyama "guest-suspend-disk", "guest-suspend-ram", 24561281c08aSTomoki Sekiyama "guest-suspend-hybrid", "guest-network-get-interfaces", 24570dd38a03Szhanghailiang "guest-get-vcpus", "guest-set-vcpus", 24580dd38a03Szhanghailiang "guest-get-memory-blocks", "guest-set-memory-blocks", 24590dd38a03Szhanghailiang "guest-get-memory-block-size", NULL}; 24601281c08aSTomoki Sekiyama char **p = (char **)list; 24611281c08aSTomoki Sekiyama 24621281c08aSTomoki Sekiyama while (*p) { 24634bca81ceSMarc-André Lureau blacklist = g_list_append(blacklist, g_strdup(*p++)); 24641281c08aSTomoki Sekiyama } 24651281c08aSTomoki Sekiyama } 24661281c08aSTomoki Sekiyama #endif 24671281c08aSTomoki Sekiyama 24681281c08aSTomoki Sekiyama #if !defined(CONFIG_FSFREEZE) 24691281c08aSTomoki Sekiyama { 24701281c08aSTomoki Sekiyama const char *list[] = { 24711281c08aSTomoki Sekiyama "guest-get-fsinfo", "guest-fsfreeze-status", 24721281c08aSTomoki Sekiyama "guest-fsfreeze-freeze", "guest-fsfreeze-freeze-list", 24731281c08aSTomoki Sekiyama "guest-fsfreeze-thaw", "guest-get-fsinfo", NULL}; 24741281c08aSTomoki Sekiyama char **p = (char **)list; 24751281c08aSTomoki Sekiyama 24761281c08aSTomoki Sekiyama while (*p) { 24774bca81ceSMarc-André Lureau blacklist = g_list_append(blacklist, g_strdup(*p++)); 24781281c08aSTomoki Sekiyama } 24791281c08aSTomoki Sekiyama } 24801281c08aSTomoki Sekiyama #endif 24811281c08aSTomoki Sekiyama 24821281c08aSTomoki Sekiyama #if !defined(CONFIG_FSTRIM) 24834bca81ceSMarc-André Lureau blacklist = g_list_append(blacklist, g_strdup("guest-fstrim")); 24841281c08aSTomoki Sekiyama #endif 24851281c08aSTomoki Sekiyama 24861281c08aSTomoki Sekiyama return blacklist; 24871281c08aSTomoki Sekiyama } 24881281c08aSTomoki Sekiyama 2489c216e5adSMichael Roth /* register init/cleanup routines for stateful command groups */ 2490c216e5adSMichael Roth void ga_command_state_init(GAState *s, GACommandState *cs) 2491c216e5adSMichael Roth { 2492c216e5adSMichael Roth #if defined(CONFIG_FSFREEZE) 2493f22d85e9SMichael Roth ga_command_state_add(cs, NULL, guest_fsfreeze_cleanup); 2494c216e5adSMichael Roth #endif 2495c216e5adSMichael Roth ga_command_state_add(cs, guest_file_init, NULL); 2496c216e5adSMichael Roth } 2497