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 144459bf38SPeter Maydell #include "qemu/osdep.h" 15c216e5adSMichael Roth #include <sys/ioctl.h> 169848f797STomáš Golembiovský #include <sys/utsname.h> 172c02cbf6SLuiz Capitulino #include <sys/wait.h> 1846d4c572STomoki Sekiyama #include <dirent.h> 19dc03272dSMichael S. Tsirkin #include "guest-agent-core.h" 20eb815e24SMarkus Armbruster #include "qga-qapi-commands.h" 21e688df6bSMarkus Armbruster #include "qapi/error.h" 227b1b5d19SPaolo Bonzini #include "qapi/qmp/qerror.h" 231de7afc9SPaolo Bonzini #include "qemu/queue.h" 241de7afc9SPaolo Bonzini #include "qemu/host-utils.h" 2512505396SDenis V. Lunev #include "qemu/sockets.h" 26920639caSDaniel P. Berrange #include "qemu/base64.h" 27f348b6d1SVeronia Bahaa #include "qemu/cutils.h" 28c216e5adSMichael Roth 29e674605fSTomáš Golembiovský #ifdef HAVE_UTMPX 30e674605fSTomáš Golembiovský #include <utmpx.h> 31e674605fSTomáš Golembiovský #endif 32e674605fSTomáš Golembiovský 332c02cbf6SLuiz Capitulino #ifndef CONFIG_HAS_ENVIRON 34eecae147SAndreas Färber #ifdef __APPLE__ 35eecae147SAndreas Färber #include <crt_externs.h> 36eecae147SAndreas Färber #define environ (*_NSGetEnviron()) 37eecae147SAndreas Färber #else 382c02cbf6SLuiz Capitulino extern char **environ; 392c02cbf6SLuiz Capitulino #endif 40eecae147SAndreas Färber #endif 412c02cbf6SLuiz Capitulino 42e72c3f2eSMichael Roth #if defined(__linux__) 43e72c3f2eSMichael Roth #include <mntent.h> 44e72c3f2eSMichael Roth #include <linux/fs.h> 45e72c3f2eSMichael Roth #include <ifaddrs.h> 46e72c3f2eSMichael Roth #include <arpa/inet.h> 47e72c3f2eSMichael Roth #include <sys/socket.h> 48e72c3f2eSMichael Roth #include <net/if.h> 4925b5ff1aSChen Hanxiao #include <sys/statvfs.h> 50e72c3f2eSMichael Roth 51eab5fd59SPaolo Bonzini #ifdef FIFREEZE 52e72c3f2eSMichael Roth #define CONFIG_FSFREEZE 53e72c3f2eSMichael Roth #endif 54eab5fd59SPaolo Bonzini #ifdef FITRIM 55eab5fd59SPaolo Bonzini #define CONFIG_FSTRIM 56eab5fd59SPaolo Bonzini #endif 57e72c3f2eSMichael Roth #endif 58e72c3f2eSMichael Roth 5977dbc81bSMarkus Armbruster static void ga_wait_child(pid_t pid, int *status, Error **errp) 60d220a6dfSLuiz Capitulino { 61d220a6dfSLuiz Capitulino pid_t rpid; 62d220a6dfSLuiz Capitulino 63d220a6dfSLuiz Capitulino *status = 0; 64d220a6dfSLuiz Capitulino 65d220a6dfSLuiz Capitulino do { 66d220a6dfSLuiz Capitulino rpid = waitpid(pid, status, 0); 67d220a6dfSLuiz Capitulino } while (rpid == -1 && errno == EINTR); 68d220a6dfSLuiz Capitulino 69d220a6dfSLuiz Capitulino if (rpid == -1) { 7077dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to wait for child (pid: %d)", 7177dbc81bSMarkus Armbruster pid); 72d220a6dfSLuiz Capitulino return; 73d220a6dfSLuiz Capitulino } 74d220a6dfSLuiz Capitulino 75d220a6dfSLuiz Capitulino g_assert(rpid == pid); 76d220a6dfSLuiz Capitulino } 77d220a6dfSLuiz Capitulino 7877dbc81bSMarkus Armbruster void qmp_guest_shutdown(bool has_mode, const char *mode, Error **errp) 79c216e5adSMichael Roth { 80c216e5adSMichael Roth const char *shutdown_flag; 81d220a6dfSLuiz Capitulino Error *local_err = NULL; 82d220a6dfSLuiz Capitulino pid_t pid; 833674838cSLuiz Capitulino int status; 84c216e5adSMichael Roth 85c216e5adSMichael Roth slog("guest-shutdown called, mode: %s", mode); 86c216e5adSMichael Roth if (!has_mode || strcmp(mode, "powerdown") == 0) { 87c216e5adSMichael Roth shutdown_flag = "-P"; 88c216e5adSMichael Roth } else if (strcmp(mode, "halt") == 0) { 89c216e5adSMichael Roth shutdown_flag = "-H"; 90c216e5adSMichael Roth } else if (strcmp(mode, "reboot") == 0) { 91c216e5adSMichael Roth shutdown_flag = "-r"; 92c216e5adSMichael Roth } else { 9377dbc81bSMarkus Armbruster error_setg(errp, 94d220a6dfSLuiz Capitulino "mode is invalid (valid values are: halt|powerdown|reboot"); 95c216e5adSMichael Roth return; 96c216e5adSMichael Roth } 97c216e5adSMichael Roth 98d5dd3498SLuiz Capitulino pid = fork(); 99d5dd3498SLuiz Capitulino if (pid == 0) { 100c216e5adSMichael Roth /* child, start the shutdown */ 101c216e5adSMichael Roth setsid(); 1023674838cSLuiz Capitulino reopen_fd_to_null(0); 1033674838cSLuiz Capitulino reopen_fd_to_null(1); 1043674838cSLuiz Capitulino reopen_fd_to_null(2); 105c216e5adSMichael Roth 106485e741cSwhitearchey execle("/sbin/shutdown", "shutdown", "-h", shutdown_flag, "+0", 1073674838cSLuiz Capitulino "hypervisor initiated shutdown", (char*)NULL, environ); 1083674838cSLuiz Capitulino _exit(EXIT_FAILURE); 109d5dd3498SLuiz Capitulino } else if (pid < 0) { 11077dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to create child process"); 111d5dd3498SLuiz Capitulino return; 112d5dd3498SLuiz Capitulino } 113d5dd3498SLuiz Capitulino 114d220a6dfSLuiz Capitulino ga_wait_child(pid, &status, &local_err); 11584d18f06SMarkus Armbruster if (local_err) { 11677dbc81bSMarkus Armbruster error_propagate(errp, local_err); 117d220a6dfSLuiz Capitulino return; 118d220a6dfSLuiz Capitulino } 119d220a6dfSLuiz Capitulino 120d220a6dfSLuiz Capitulino if (!WIFEXITED(status)) { 12177dbc81bSMarkus Armbruster error_setg(errp, "child process has terminated abnormally"); 122d220a6dfSLuiz Capitulino return; 123d220a6dfSLuiz Capitulino } 124d220a6dfSLuiz Capitulino 125d220a6dfSLuiz Capitulino if (WEXITSTATUS(status)) { 12677dbc81bSMarkus Armbruster error_setg(errp, "child process has failed to shutdown"); 127d220a6dfSLuiz Capitulino return; 128d220a6dfSLuiz Capitulino } 129d220a6dfSLuiz Capitulino 130085d8134SPeter Maydell /* succeeded */ 131c216e5adSMichael Roth } 132c216e5adSMichael Roth 1336912e6a9SLei Li int64_t qmp_guest_get_time(Error **errp) 1346912e6a9SLei Li { 1356912e6a9SLei Li int ret; 1366912e6a9SLei Li qemu_timeval tq; 1376912e6a9SLei Li 1386912e6a9SLei Li ret = qemu_gettimeofday(&tq); 1396912e6a9SLei Li if (ret < 0) { 1406912e6a9SLei Li error_setg_errno(errp, errno, "Failed to get time"); 1416912e6a9SLei Li return -1; 1426912e6a9SLei Li } 1436912e6a9SLei Li 1449be38598SEduardo Habkost return tq.tv_sec * 1000000000LL + tq.tv_usec * 1000; 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 218895b00f6SMarc-André Lureau typedef enum { 219895b00f6SMarc-André Lureau RW_STATE_NEW, 220895b00f6SMarc-André Lureau RW_STATE_READING, 221895b00f6SMarc-André Lureau RW_STATE_WRITING, 222895b00f6SMarc-André Lureau } RwState; 223895b00f6SMarc-André Lureau 224c216e5adSMichael Roth typedef struct GuestFileHandle { 225c216e5adSMichael Roth uint64_t id; 226c216e5adSMichael Roth FILE *fh; 227895b00f6SMarc-André Lureau RwState state; 228c216e5adSMichael Roth QTAILQ_ENTRY(GuestFileHandle) next; 229c216e5adSMichael Roth } GuestFileHandle; 230c216e5adSMichael Roth 231c216e5adSMichael Roth static struct { 232c216e5adSMichael Roth QTAILQ_HEAD(, GuestFileHandle) filehandles; 233b4fe97c8SDenis V. Lunev } guest_file_state = { 234b4fe97c8SDenis V. Lunev .filehandles = QTAILQ_HEAD_INITIALIZER(guest_file_state.filehandles), 235b4fe97c8SDenis V. Lunev }; 236c216e5adSMichael Roth 23739097dafSMichael Roth static int64_t guest_file_handle_add(FILE *fh, Error **errp) 238c216e5adSMichael Roth { 239c216e5adSMichael Roth GuestFileHandle *gfh; 24039097dafSMichael Roth int64_t handle; 24139097dafSMichael Roth 24239097dafSMichael Roth handle = ga_get_fd_handle(ga_state, errp); 243a903f40cSMarkus Armbruster if (handle < 0) { 244a903f40cSMarkus Armbruster return -1; 24539097dafSMichael Roth } 246c216e5adSMichael Roth 247f3a06403SMarkus Armbruster gfh = g_new0(GuestFileHandle, 1); 24839097dafSMichael Roth gfh->id = handle; 249c216e5adSMichael Roth gfh->fh = fh; 250c216e5adSMichael Roth QTAILQ_INSERT_TAIL(&guest_file_state.filehandles, gfh, next); 25139097dafSMichael Roth 25239097dafSMichael Roth return handle; 253c216e5adSMichael Roth } 254c216e5adSMichael Roth 25577dbc81bSMarkus Armbruster static GuestFileHandle *guest_file_handle_find(int64_t id, Error **errp) 256c216e5adSMichael Roth { 257c216e5adSMichael Roth GuestFileHandle *gfh; 258c216e5adSMichael Roth 259c216e5adSMichael Roth QTAILQ_FOREACH(gfh, &guest_file_state.filehandles, next) 260c216e5adSMichael Roth { 261c216e5adSMichael Roth if (gfh->id == id) { 262c216e5adSMichael Roth return gfh; 263c216e5adSMichael Roth } 264c216e5adSMichael Roth } 265c216e5adSMichael Roth 26677dbc81bSMarkus Armbruster error_setg(errp, "handle '%" PRId64 "' has not been found", id); 267c216e5adSMichael Roth return NULL; 268c216e5adSMichael Roth } 269c216e5adSMichael Roth 270c689b4f1SLaszlo Ersek typedef const char * const ccpc; 271c689b4f1SLaszlo Ersek 2728fe6bbcaSLaszlo Ersek #ifndef O_BINARY 2738fe6bbcaSLaszlo Ersek #define O_BINARY 0 2748fe6bbcaSLaszlo Ersek #endif 2758fe6bbcaSLaszlo Ersek 276c689b4f1SLaszlo Ersek /* http://pubs.opengroup.org/onlinepubs/9699919799/functions/fopen.html */ 277c689b4f1SLaszlo Ersek static const struct { 278c689b4f1SLaszlo Ersek ccpc *forms; 279c689b4f1SLaszlo Ersek int oflag_base; 280c689b4f1SLaszlo Ersek } guest_file_open_modes[] = { 2818fe6bbcaSLaszlo Ersek { (ccpc[]){ "r", NULL }, O_RDONLY }, 2828fe6bbcaSLaszlo Ersek { (ccpc[]){ "rb", NULL }, O_RDONLY | O_BINARY }, 2838fe6bbcaSLaszlo Ersek { (ccpc[]){ "w", NULL }, O_WRONLY | O_CREAT | O_TRUNC }, 2848fe6bbcaSLaszlo Ersek { (ccpc[]){ "wb", NULL }, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY }, 2858fe6bbcaSLaszlo Ersek { (ccpc[]){ "a", NULL }, O_WRONLY | O_CREAT | O_APPEND }, 2868fe6bbcaSLaszlo Ersek { (ccpc[]){ "ab", NULL }, O_WRONLY | O_CREAT | O_APPEND | O_BINARY }, 2878fe6bbcaSLaszlo Ersek { (ccpc[]){ "r+", NULL }, O_RDWR }, 2888fe6bbcaSLaszlo Ersek { (ccpc[]){ "rb+", "r+b", NULL }, O_RDWR | O_BINARY }, 2898fe6bbcaSLaszlo Ersek { (ccpc[]){ "w+", NULL }, O_RDWR | O_CREAT | O_TRUNC }, 2908fe6bbcaSLaszlo Ersek { (ccpc[]){ "wb+", "w+b", NULL }, O_RDWR | O_CREAT | O_TRUNC | O_BINARY }, 2918fe6bbcaSLaszlo Ersek { (ccpc[]){ "a+", NULL }, O_RDWR | O_CREAT | O_APPEND }, 2928fe6bbcaSLaszlo Ersek { (ccpc[]){ "ab+", "a+b", NULL }, O_RDWR | O_CREAT | O_APPEND | O_BINARY } 293c689b4f1SLaszlo Ersek }; 294c689b4f1SLaszlo Ersek 295c689b4f1SLaszlo Ersek static int 29677dbc81bSMarkus Armbruster find_open_flag(const char *mode_str, Error **errp) 297c689b4f1SLaszlo Ersek { 298c689b4f1SLaszlo Ersek unsigned mode; 299c689b4f1SLaszlo Ersek 300c689b4f1SLaszlo Ersek for (mode = 0; mode < ARRAY_SIZE(guest_file_open_modes); ++mode) { 301c689b4f1SLaszlo Ersek ccpc *form; 302c689b4f1SLaszlo Ersek 303c689b4f1SLaszlo Ersek form = guest_file_open_modes[mode].forms; 304c689b4f1SLaszlo Ersek while (*form != NULL && strcmp(*form, mode_str) != 0) { 305c689b4f1SLaszlo Ersek ++form; 306c689b4f1SLaszlo Ersek } 307c689b4f1SLaszlo Ersek if (*form != NULL) { 308c689b4f1SLaszlo Ersek break; 309c689b4f1SLaszlo Ersek } 310c689b4f1SLaszlo Ersek } 311c689b4f1SLaszlo Ersek 312c689b4f1SLaszlo Ersek if (mode == ARRAY_SIZE(guest_file_open_modes)) { 31377dbc81bSMarkus Armbruster error_setg(errp, "invalid file open mode '%s'", mode_str); 314c689b4f1SLaszlo Ersek return -1; 315c689b4f1SLaszlo Ersek } 316c689b4f1SLaszlo Ersek return guest_file_open_modes[mode].oflag_base | O_NOCTTY | O_NONBLOCK; 317c689b4f1SLaszlo Ersek } 318c689b4f1SLaszlo Ersek 319c689b4f1SLaszlo Ersek #define DEFAULT_NEW_FILE_MODE (S_IRUSR | S_IWUSR | \ 320c689b4f1SLaszlo Ersek S_IRGRP | S_IWGRP | \ 321c689b4f1SLaszlo Ersek S_IROTH | S_IWOTH) 322c689b4f1SLaszlo Ersek 323c689b4f1SLaszlo Ersek static FILE * 32477dbc81bSMarkus Armbruster safe_open_or_create(const char *path, const char *mode, Error **errp) 325c689b4f1SLaszlo Ersek { 326c689b4f1SLaszlo Ersek Error *local_err = NULL; 327c689b4f1SLaszlo Ersek int oflag; 328c689b4f1SLaszlo Ersek 329c689b4f1SLaszlo Ersek oflag = find_open_flag(mode, &local_err); 330c689b4f1SLaszlo Ersek if (local_err == NULL) { 331c689b4f1SLaszlo Ersek int fd; 332c689b4f1SLaszlo Ersek 333c689b4f1SLaszlo Ersek /* If the caller wants / allows creation of a new file, we implement it 334c689b4f1SLaszlo Ersek * with a two step process: open() + (open() / fchmod()). 335c689b4f1SLaszlo Ersek * 336c689b4f1SLaszlo Ersek * First we insist on creating the file exclusively as a new file. If 337c689b4f1SLaszlo Ersek * that succeeds, we're free to set any file-mode bits on it. (The 338c689b4f1SLaszlo Ersek * motivation is that we want to set those file-mode bits independently 339c689b4f1SLaszlo Ersek * of the current umask.) 340c689b4f1SLaszlo Ersek * 341c689b4f1SLaszlo Ersek * If the exclusive creation fails because the file already exists 342c689b4f1SLaszlo Ersek * (EEXIST is not possible for any other reason), we just attempt to 343c689b4f1SLaszlo Ersek * open the file, but in this case we won't be allowed to change the 344c689b4f1SLaszlo Ersek * file-mode bits on the preexistent file. 345c689b4f1SLaszlo Ersek * 346c689b4f1SLaszlo Ersek * The pathname should never disappear between the two open()s in 347c689b4f1SLaszlo Ersek * practice. If it happens, then someone very likely tried to race us. 348c689b4f1SLaszlo Ersek * In this case just go ahead and report the ENOENT from the second 349c689b4f1SLaszlo Ersek * open() to the caller. 350c689b4f1SLaszlo Ersek * 351c689b4f1SLaszlo Ersek * If the caller wants to open a preexistent file, then the first 352c689b4f1SLaszlo Ersek * open() is decisive and its third argument is ignored, and the second 353c689b4f1SLaszlo Ersek * open() and the fchmod() are never called. 354c689b4f1SLaszlo Ersek */ 355c689b4f1SLaszlo Ersek fd = open(path, oflag | ((oflag & O_CREAT) ? O_EXCL : 0), 0); 356c689b4f1SLaszlo Ersek if (fd == -1 && errno == EEXIST) { 357c689b4f1SLaszlo Ersek oflag &= ~(unsigned)O_CREAT; 358c689b4f1SLaszlo Ersek fd = open(path, oflag); 359c689b4f1SLaszlo Ersek } 360c689b4f1SLaszlo Ersek 361c689b4f1SLaszlo Ersek if (fd == -1) { 362c689b4f1SLaszlo Ersek error_setg_errno(&local_err, errno, "failed to open file '%s' " 363c689b4f1SLaszlo Ersek "(mode: '%s')", path, mode); 364c689b4f1SLaszlo Ersek } else { 365c689b4f1SLaszlo Ersek qemu_set_cloexec(fd); 366c689b4f1SLaszlo Ersek 367c689b4f1SLaszlo Ersek if ((oflag & O_CREAT) && fchmod(fd, DEFAULT_NEW_FILE_MODE) == -1) { 368c689b4f1SLaszlo Ersek error_setg_errno(&local_err, errno, "failed to set permission " 369c689b4f1SLaszlo Ersek "0%03o on new file '%s' (mode: '%s')", 370c689b4f1SLaszlo Ersek (unsigned)DEFAULT_NEW_FILE_MODE, path, mode); 371c689b4f1SLaszlo Ersek } else { 372c689b4f1SLaszlo Ersek FILE *f; 373c689b4f1SLaszlo Ersek 374c689b4f1SLaszlo Ersek f = fdopen(fd, mode); 375c689b4f1SLaszlo Ersek if (f == NULL) { 376c689b4f1SLaszlo Ersek error_setg_errno(&local_err, errno, "failed to associate " 377c689b4f1SLaszlo Ersek "stdio stream with file descriptor %d, " 378c689b4f1SLaszlo Ersek "file '%s' (mode: '%s')", fd, path, mode); 379c689b4f1SLaszlo Ersek } else { 380c689b4f1SLaszlo Ersek return f; 381c689b4f1SLaszlo Ersek } 382c689b4f1SLaszlo Ersek } 383c689b4f1SLaszlo Ersek 384c689b4f1SLaszlo Ersek close(fd); 3852b720018SLaszlo Ersek if (oflag & O_CREAT) { 3862b720018SLaszlo Ersek unlink(path); 3872b720018SLaszlo Ersek } 388c689b4f1SLaszlo Ersek } 389c689b4f1SLaszlo Ersek } 390c689b4f1SLaszlo Ersek 39177dbc81bSMarkus Armbruster error_propagate(errp, local_err); 392c689b4f1SLaszlo Ersek return NULL; 393c689b4f1SLaszlo Ersek } 394c689b4f1SLaszlo Ersek 39577dbc81bSMarkus Armbruster int64_t qmp_guest_file_open(const char *path, bool has_mode, const char *mode, 39677dbc81bSMarkus Armbruster Error **errp) 397c216e5adSMichael Roth { 398c216e5adSMichael Roth FILE *fh; 399c689b4f1SLaszlo Ersek Error *local_err = NULL; 40085b6f6f5SSimon Zolin int64_t handle; 401c216e5adSMichael Roth 402c216e5adSMichael Roth if (!has_mode) { 403c216e5adSMichael Roth mode = "r"; 404c216e5adSMichael Roth } 405c216e5adSMichael Roth slog("guest-file-open called, filepath: %s, mode: %s", path, mode); 406c689b4f1SLaszlo Ersek fh = safe_open_or_create(path, mode, &local_err); 407c689b4f1SLaszlo Ersek if (local_err != NULL) { 40877dbc81bSMarkus Armbruster error_propagate(errp, local_err); 409c216e5adSMichael Roth return -1; 410c216e5adSMichael Roth } 411c216e5adSMichael Roth 412c216e5adSMichael Roth /* set fd non-blocking to avoid common use cases (like reading from a 413c216e5adSMichael Roth * named pipe) from hanging the agent 414c216e5adSMichael Roth */ 41512505396SDenis V. Lunev qemu_set_nonblock(fileno(fh)); 416c216e5adSMichael Roth 41777dbc81bSMarkus Armbruster handle = guest_file_handle_add(fh, errp); 418a903f40cSMarkus Armbruster if (handle < 0) { 41939097dafSMichael Roth fclose(fh); 42039097dafSMichael Roth return -1; 42139097dafSMichael Roth } 42239097dafSMichael Roth 423d607a523SStefan Weil slog("guest-file-open, handle: %" PRId64, handle); 42439097dafSMichael Roth return handle; 425c216e5adSMichael Roth } 426c216e5adSMichael Roth 42777dbc81bSMarkus Armbruster void qmp_guest_file_close(int64_t handle, Error **errp) 428c216e5adSMichael Roth { 42977dbc81bSMarkus Armbruster GuestFileHandle *gfh = guest_file_handle_find(handle, errp); 430c216e5adSMichael Roth int ret; 431c216e5adSMichael Roth 432d607a523SStefan Weil slog("guest-file-close called, handle: %" PRId64, handle); 433c216e5adSMichael Roth if (!gfh) { 434c216e5adSMichael Roth return; 435c216e5adSMichael Roth } 436c216e5adSMichael Roth 437c216e5adSMichael Roth ret = fclose(gfh->fh); 4383ac4b7c5SLuiz Capitulino if (ret == EOF) { 43977dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to close handle"); 440c216e5adSMichael Roth return; 441c216e5adSMichael Roth } 442c216e5adSMichael Roth 443c216e5adSMichael Roth QTAILQ_REMOVE(&guest_file_state.filehandles, gfh, next); 444c216e5adSMichael Roth g_free(gfh); 445c216e5adSMichael Roth } 446c216e5adSMichael Roth 447c216e5adSMichael Roth struct GuestFileRead *qmp_guest_file_read(int64_t handle, bool has_count, 44877dbc81bSMarkus Armbruster int64_t count, Error **errp) 449c216e5adSMichael Roth { 45077dbc81bSMarkus Armbruster GuestFileHandle *gfh = guest_file_handle_find(handle, errp); 451c216e5adSMichael Roth GuestFileRead *read_data = NULL; 452c216e5adSMichael Roth guchar *buf; 453c216e5adSMichael Roth FILE *fh; 454c216e5adSMichael Roth size_t read_count; 455c216e5adSMichael Roth 456c216e5adSMichael Roth if (!gfh) { 457c216e5adSMichael Roth return NULL; 458c216e5adSMichael Roth } 459c216e5adSMichael Roth 460c216e5adSMichael Roth if (!has_count) { 461c216e5adSMichael Roth count = QGA_READ_COUNT_DEFAULT; 462141b1974SPrasad J Pandit } else if (count < 0 || count >= UINT32_MAX) { 46377dbc81bSMarkus Armbruster error_setg(errp, "value '%" PRId64 "' is invalid for argument count", 464db3edb66SLuiz Capitulino count); 465c216e5adSMichael Roth return NULL; 466c216e5adSMichael Roth } 467c216e5adSMichael Roth 468c216e5adSMichael Roth fh = gfh->fh; 469895b00f6SMarc-André Lureau 470895b00f6SMarc-André Lureau /* explicitly flush when switching from writing to reading */ 471895b00f6SMarc-André Lureau if (gfh->state == RW_STATE_WRITING) { 472895b00f6SMarc-André Lureau int ret = fflush(fh); 473895b00f6SMarc-André Lureau if (ret == EOF) { 474895b00f6SMarc-André Lureau error_setg_errno(errp, errno, "failed to flush file"); 475895b00f6SMarc-André Lureau return NULL; 476895b00f6SMarc-André Lureau } 477895b00f6SMarc-André Lureau gfh->state = RW_STATE_NEW; 478895b00f6SMarc-André Lureau } 479895b00f6SMarc-André Lureau 480c216e5adSMichael Roth buf = g_malloc0(count+1); 481c216e5adSMichael Roth read_count = fread(buf, 1, count, fh); 482c216e5adSMichael Roth if (ferror(fh)) { 48377dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to read file"); 484d607a523SStefan Weil slog("guest-file-read failed, handle: %" PRId64, handle); 485c216e5adSMichael Roth } else { 486c216e5adSMichael Roth buf[read_count] = 0; 487f3a06403SMarkus Armbruster read_data = g_new0(GuestFileRead, 1); 488c216e5adSMichael Roth read_data->count = read_count; 489c216e5adSMichael Roth read_data->eof = feof(fh); 490c216e5adSMichael Roth if (read_count) { 491c216e5adSMichael Roth read_data->buf_b64 = g_base64_encode(buf, read_count); 492c216e5adSMichael Roth } 493895b00f6SMarc-André Lureau gfh->state = RW_STATE_READING; 494c216e5adSMichael Roth } 495c216e5adSMichael Roth g_free(buf); 496c216e5adSMichael Roth clearerr(fh); 497c216e5adSMichael Roth 498c216e5adSMichael Roth return read_data; 499c216e5adSMichael Roth } 500c216e5adSMichael Roth 501c216e5adSMichael Roth GuestFileWrite *qmp_guest_file_write(int64_t handle, const char *buf_b64, 50277dbc81bSMarkus Armbruster bool has_count, int64_t count, 50377dbc81bSMarkus Armbruster Error **errp) 504c216e5adSMichael Roth { 505c216e5adSMichael Roth GuestFileWrite *write_data = NULL; 506c216e5adSMichael Roth guchar *buf; 507c216e5adSMichael Roth gsize buf_len; 508c216e5adSMichael Roth int write_count; 50977dbc81bSMarkus Armbruster GuestFileHandle *gfh = guest_file_handle_find(handle, errp); 510c216e5adSMichael Roth FILE *fh; 511c216e5adSMichael Roth 512c216e5adSMichael Roth if (!gfh) { 513c216e5adSMichael Roth return NULL; 514c216e5adSMichael Roth } 515c216e5adSMichael Roth 516c216e5adSMichael Roth fh = gfh->fh; 517895b00f6SMarc-André Lureau 518895b00f6SMarc-André Lureau if (gfh->state == RW_STATE_READING) { 519895b00f6SMarc-André Lureau int ret = fseek(fh, 0, SEEK_CUR); 520895b00f6SMarc-André Lureau if (ret == -1) { 521895b00f6SMarc-André Lureau error_setg_errno(errp, errno, "failed to seek file"); 522895b00f6SMarc-André Lureau return NULL; 523895b00f6SMarc-André Lureau } 524895b00f6SMarc-André Lureau gfh->state = RW_STATE_NEW; 525895b00f6SMarc-André Lureau } 526895b00f6SMarc-André Lureau 527920639caSDaniel P. Berrange buf = qbase64_decode(buf_b64, -1, &buf_len, errp); 528920639caSDaniel P. Berrange if (!buf) { 529920639caSDaniel P. Berrange return NULL; 530920639caSDaniel P. Berrange } 531c216e5adSMichael Roth 532c216e5adSMichael Roth if (!has_count) { 533c216e5adSMichael Roth count = buf_len; 534c216e5adSMichael Roth } else if (count < 0 || count > buf_len) { 53577dbc81bSMarkus Armbruster error_setg(errp, "value '%" PRId64 "' is invalid for argument count", 536db3edb66SLuiz Capitulino count); 537c216e5adSMichael Roth g_free(buf); 538c216e5adSMichael Roth return NULL; 539c216e5adSMichael Roth } 540c216e5adSMichael Roth 541c216e5adSMichael Roth write_count = fwrite(buf, 1, count, fh); 542c216e5adSMichael Roth if (ferror(fh)) { 54377dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to write to file"); 544d607a523SStefan Weil slog("guest-file-write failed, handle: %" PRId64, handle); 545c216e5adSMichael Roth } else { 546f3a06403SMarkus Armbruster write_data = g_new0(GuestFileWrite, 1); 547c216e5adSMichael Roth write_data->count = write_count; 548c216e5adSMichael Roth write_data->eof = feof(fh); 549895b00f6SMarc-André Lureau gfh->state = RW_STATE_WRITING; 550c216e5adSMichael Roth } 551c216e5adSMichael Roth g_free(buf); 552c216e5adSMichael Roth clearerr(fh); 553c216e5adSMichael Roth 554c216e5adSMichael Roth return write_data; 555c216e5adSMichael Roth } 556c216e5adSMichael Roth 557c216e5adSMichael Roth struct GuestFileSeek *qmp_guest_file_seek(int64_t handle, int64_t offset, 5580b4b4938SEric Blake GuestFileWhence *whence_code, 5590b4b4938SEric Blake Error **errp) 560c216e5adSMichael Roth { 56177dbc81bSMarkus Armbruster GuestFileHandle *gfh = guest_file_handle_find(handle, errp); 562c216e5adSMichael Roth GuestFileSeek *seek_data = NULL; 563c216e5adSMichael Roth FILE *fh; 564c216e5adSMichael Roth int ret; 5650a982b1bSEric Blake int whence; 5660b4b4938SEric Blake Error *err = NULL; 567c216e5adSMichael Roth 568c216e5adSMichael Roth if (!gfh) { 569c216e5adSMichael Roth return NULL; 570c216e5adSMichael Roth } 571c216e5adSMichael Roth 5720a982b1bSEric Blake /* We stupidly exposed 'whence':'int' in our qapi */ 5730b4b4938SEric Blake whence = ga_parse_whence(whence_code, &err); 5740b4b4938SEric Blake if (err) { 5750b4b4938SEric Blake error_propagate(errp, err); 5760a982b1bSEric Blake return NULL; 5770a982b1bSEric Blake } 5780a982b1bSEric Blake 579c216e5adSMichael Roth fh = gfh->fh; 580c216e5adSMichael Roth ret = fseek(fh, offset, whence); 581c216e5adSMichael Roth if (ret == -1) { 58277dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to seek file"); 583895b00f6SMarc-André Lureau if (errno == ESPIPE) { 584895b00f6SMarc-André Lureau /* file is non-seekable, stdio shouldn't be buffering anyways */ 585895b00f6SMarc-André Lureau gfh->state = RW_STATE_NEW; 586895b00f6SMarc-André Lureau } 587c216e5adSMichael Roth } else { 58810b7c5ddSMarkus Armbruster seek_data = g_new0(GuestFileSeek, 1); 589c216e5adSMichael Roth seek_data->position = ftell(fh); 590c216e5adSMichael Roth seek_data->eof = feof(fh); 591895b00f6SMarc-André Lureau gfh->state = RW_STATE_NEW; 592c216e5adSMichael Roth } 593c216e5adSMichael Roth clearerr(fh); 594c216e5adSMichael Roth 595c216e5adSMichael Roth return seek_data; 596c216e5adSMichael Roth } 597c216e5adSMichael Roth 59877dbc81bSMarkus Armbruster void qmp_guest_file_flush(int64_t handle, Error **errp) 599c216e5adSMichael Roth { 60077dbc81bSMarkus Armbruster GuestFileHandle *gfh = guest_file_handle_find(handle, errp); 601c216e5adSMichael Roth FILE *fh; 602c216e5adSMichael Roth int ret; 603c216e5adSMichael Roth 604c216e5adSMichael Roth if (!gfh) { 605c216e5adSMichael Roth return; 606c216e5adSMichael Roth } 607c216e5adSMichael Roth 608c216e5adSMichael Roth fh = gfh->fh; 609c216e5adSMichael Roth ret = fflush(fh); 610c216e5adSMichael Roth if (ret == EOF) { 61177dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to flush file"); 612895b00f6SMarc-André Lureau } else { 613895b00f6SMarc-André Lureau gfh->state = RW_STATE_NEW; 614c216e5adSMichael Roth } 615c216e5adSMichael Roth } 616c216e5adSMichael Roth 617e72c3f2eSMichael Roth /* linux-specific implementations. avoid this if at all possible. */ 618e72c3f2eSMichael Roth #if defined(__linux__) 619e72c3f2eSMichael Roth 620eab5fd59SPaolo Bonzini #if defined(CONFIG_FSFREEZE) || defined(CONFIG_FSTRIM) 621af02203fSPaolo Bonzini typedef struct FsMount { 622c216e5adSMichael Roth char *dirname; 623c216e5adSMichael Roth char *devtype; 62446d4c572STomoki Sekiyama unsigned int devmajor, devminor; 625af02203fSPaolo Bonzini QTAILQ_ENTRY(FsMount) next; 626af02203fSPaolo Bonzini } FsMount; 627c216e5adSMichael Roth 628e5d9adbdSTomoki Sekiyama typedef QTAILQ_HEAD(FsMountList, FsMount) FsMountList; 6299e8aded4SMichael Roth 630af02203fSPaolo Bonzini static void free_fs_mount_list(FsMountList *mounts) 631c216e5adSMichael Roth { 632af02203fSPaolo Bonzini FsMount *mount, *temp; 633c216e5adSMichael Roth 6349e8aded4SMichael Roth if (!mounts) { 6359e8aded4SMichael Roth return; 6369e8aded4SMichael Roth } 6379e8aded4SMichael Roth 6389e8aded4SMichael Roth QTAILQ_FOREACH_SAFE(mount, mounts, next, temp) { 6399e8aded4SMichael Roth QTAILQ_REMOVE(mounts, mount, next); 640c216e5adSMichael Roth g_free(mount->dirname); 641c216e5adSMichael Roth g_free(mount->devtype); 642c216e5adSMichael Roth g_free(mount); 643c216e5adSMichael Roth } 6449e8aded4SMichael Roth } 6459e8aded4SMichael Roth 64646d4c572STomoki Sekiyama static int dev_major_minor(const char *devpath, 64746d4c572STomoki Sekiyama unsigned int *devmajor, unsigned int *devminor) 64846d4c572STomoki Sekiyama { 64946d4c572STomoki Sekiyama struct stat st; 65046d4c572STomoki Sekiyama 65146d4c572STomoki Sekiyama *devmajor = 0; 65246d4c572STomoki Sekiyama *devminor = 0; 65346d4c572STomoki Sekiyama 65446d4c572STomoki Sekiyama if (stat(devpath, &st) < 0) { 65546d4c572STomoki Sekiyama slog("failed to stat device file '%s': %s", devpath, strerror(errno)); 65646d4c572STomoki Sekiyama return -1; 65746d4c572STomoki Sekiyama } 65846d4c572STomoki Sekiyama if (S_ISDIR(st.st_mode)) { 65946d4c572STomoki Sekiyama /* It is bind mount */ 66046d4c572STomoki Sekiyama return -2; 66146d4c572STomoki Sekiyama } 66246d4c572STomoki Sekiyama if (S_ISBLK(st.st_mode)) { 66346d4c572STomoki Sekiyama *devmajor = major(st.st_rdev); 66446d4c572STomoki Sekiyama *devminor = minor(st.st_rdev); 66546d4c572STomoki Sekiyama return 0; 66646d4c572STomoki Sekiyama } 66746d4c572STomoki Sekiyama return -1; 66846d4c572STomoki Sekiyama } 66946d4c572STomoki Sekiyama 6709e8aded4SMichael Roth /* 6719e8aded4SMichael Roth * Walk the mount table and build a list of local file systems 6729e8aded4SMichael Roth */ 67346d4c572STomoki Sekiyama static void build_fs_mount_list_from_mtab(FsMountList *mounts, Error **errp) 6749e8aded4SMichael Roth { 6759e8aded4SMichael Roth struct mntent *ment; 676af02203fSPaolo Bonzini FsMount *mount; 6779e2fa418SMichael Roth char const *mtab = "/proc/self/mounts"; 6789e8aded4SMichael Roth FILE *fp; 67946d4c572STomoki Sekiyama unsigned int devmajor, devminor; 680c216e5adSMichael Roth 681c216e5adSMichael Roth fp = setmntent(mtab, "r"); 682c216e5adSMichael Roth if (!fp) { 68377dbc81bSMarkus Armbruster error_setg(errp, "failed to open mtab file: '%s'", mtab); 684261551d1SLuiz Capitulino return; 685c216e5adSMichael Roth } 686c216e5adSMichael Roth 687c216e5adSMichael Roth while ((ment = getmntent(fp))) { 688c216e5adSMichael Roth /* 689c216e5adSMichael Roth * An entry which device name doesn't start with a '/' is 690c216e5adSMichael Roth * either a dummy file system or a network file system. 691c216e5adSMichael Roth * Add special handling for smbfs and cifs as is done by 692c216e5adSMichael Roth * coreutils as well. 693c216e5adSMichael Roth */ 694c216e5adSMichael Roth if ((ment->mnt_fsname[0] != '/') || 695c216e5adSMichael Roth (strcmp(ment->mnt_type, "smbfs") == 0) || 696c216e5adSMichael Roth (strcmp(ment->mnt_type, "cifs") == 0)) { 697c216e5adSMichael Roth continue; 698c216e5adSMichael Roth } 69946d4c572STomoki Sekiyama if (dev_major_minor(ment->mnt_fsname, &devmajor, &devminor) == -2) { 70046d4c572STomoki Sekiyama /* Skip bind mounts */ 70146d4c572STomoki Sekiyama continue; 70246d4c572STomoki Sekiyama } 703c216e5adSMichael Roth 704f3a06403SMarkus Armbruster mount = g_new0(FsMount, 1); 705c216e5adSMichael Roth mount->dirname = g_strdup(ment->mnt_dir); 706c216e5adSMichael Roth mount->devtype = g_strdup(ment->mnt_type); 70746d4c572STomoki Sekiyama mount->devmajor = devmajor; 70846d4c572STomoki Sekiyama mount->devminor = devminor; 709c216e5adSMichael Roth 7109e8aded4SMichael Roth QTAILQ_INSERT_TAIL(mounts, mount, next); 711c216e5adSMichael Roth } 712c216e5adSMichael Roth 713c216e5adSMichael Roth endmntent(fp); 714c216e5adSMichael Roth } 71546d4c572STomoki Sekiyama 71646d4c572STomoki Sekiyama static void decode_mntname(char *name, int len) 71746d4c572STomoki Sekiyama { 71846d4c572STomoki Sekiyama int i, j = 0; 71946d4c572STomoki Sekiyama for (i = 0; i <= len; i++) { 72046d4c572STomoki Sekiyama if (name[i] != '\\') { 72146d4c572STomoki Sekiyama name[j++] = name[i]; 72246d4c572STomoki Sekiyama } else if (name[i + 1] == '\\') { 72346d4c572STomoki Sekiyama name[j++] = '\\'; 72446d4c572STomoki Sekiyama i++; 72546d4c572STomoki Sekiyama } else if (name[i + 1] >= '0' && name[i + 1] <= '3' && 72646d4c572STomoki Sekiyama name[i + 2] >= '0' && name[i + 2] <= '7' && 72746d4c572STomoki Sekiyama name[i + 3] >= '0' && name[i + 3] <= '7') { 72846d4c572STomoki Sekiyama name[j++] = (name[i + 1] - '0') * 64 + 72946d4c572STomoki Sekiyama (name[i + 2] - '0') * 8 + 73046d4c572STomoki Sekiyama (name[i + 3] - '0'); 73146d4c572STomoki Sekiyama i += 3; 73246d4c572STomoki Sekiyama } else { 73346d4c572STomoki Sekiyama name[j++] = name[i]; 73446d4c572STomoki Sekiyama } 73546d4c572STomoki Sekiyama } 73646d4c572STomoki Sekiyama } 73746d4c572STomoki Sekiyama 73846d4c572STomoki Sekiyama static void build_fs_mount_list(FsMountList *mounts, Error **errp) 73946d4c572STomoki Sekiyama { 74046d4c572STomoki Sekiyama FsMount *mount; 74146d4c572STomoki Sekiyama char const *mountinfo = "/proc/self/mountinfo"; 74246d4c572STomoki Sekiyama FILE *fp; 74346d4c572STomoki Sekiyama char *line = NULL, *dash; 74446d4c572STomoki Sekiyama size_t n; 74546d4c572STomoki Sekiyama char check; 74646d4c572STomoki Sekiyama unsigned int devmajor, devminor; 74746d4c572STomoki Sekiyama int ret, dir_s, dir_e, type_s, type_e, dev_s, dev_e; 74846d4c572STomoki Sekiyama 74946d4c572STomoki Sekiyama fp = fopen(mountinfo, "r"); 75046d4c572STomoki Sekiyama if (!fp) { 75146d4c572STomoki Sekiyama build_fs_mount_list_from_mtab(mounts, errp); 75246d4c572STomoki Sekiyama return; 75346d4c572STomoki Sekiyama } 75446d4c572STomoki Sekiyama 75546d4c572STomoki Sekiyama while (getline(&line, &n, fp) != -1) { 75646d4c572STomoki Sekiyama ret = sscanf(line, "%*u %*u %u:%u %*s %n%*s%n%c", 75746d4c572STomoki Sekiyama &devmajor, &devminor, &dir_s, &dir_e, &check); 75846d4c572STomoki Sekiyama if (ret < 3) { 75946d4c572STomoki Sekiyama continue; 76046d4c572STomoki Sekiyama } 76146d4c572STomoki Sekiyama dash = strstr(line + dir_e, " - "); 76246d4c572STomoki Sekiyama if (!dash) { 76346d4c572STomoki Sekiyama continue; 76446d4c572STomoki Sekiyama } 76546d4c572STomoki Sekiyama ret = sscanf(dash, " - %n%*s%n %n%*s%n%c", 76646d4c572STomoki Sekiyama &type_s, &type_e, &dev_s, &dev_e, &check); 76746d4c572STomoki Sekiyama if (ret < 1) { 76846d4c572STomoki Sekiyama continue; 76946d4c572STomoki Sekiyama } 77046d4c572STomoki Sekiyama line[dir_e] = 0; 77146d4c572STomoki Sekiyama dash[type_e] = 0; 77246d4c572STomoki Sekiyama dash[dev_e] = 0; 77346d4c572STomoki Sekiyama decode_mntname(line + dir_s, dir_e - dir_s); 77446d4c572STomoki Sekiyama decode_mntname(dash + dev_s, dev_e - dev_s); 77546d4c572STomoki Sekiyama if (devmajor == 0) { 77646d4c572STomoki Sekiyama /* btrfs reports major number = 0 */ 77746d4c572STomoki Sekiyama if (strcmp("btrfs", dash + type_s) != 0 || 77846d4c572STomoki Sekiyama dev_major_minor(dash + dev_s, &devmajor, &devminor) < 0) { 77946d4c572STomoki Sekiyama continue; 78046d4c572STomoki Sekiyama } 78146d4c572STomoki Sekiyama } 78246d4c572STomoki Sekiyama 783f3a06403SMarkus Armbruster mount = g_new0(FsMount, 1); 78446d4c572STomoki Sekiyama mount->dirname = g_strdup(line + dir_s); 78546d4c572STomoki Sekiyama mount->devtype = g_strdup(dash + type_s); 78646d4c572STomoki Sekiyama mount->devmajor = devmajor; 78746d4c572STomoki Sekiyama mount->devminor = devminor; 78846d4c572STomoki Sekiyama 78946d4c572STomoki Sekiyama QTAILQ_INSERT_TAIL(mounts, mount, next); 79046d4c572STomoki Sekiyama } 79146d4c572STomoki Sekiyama free(line); 79246d4c572STomoki Sekiyama 79346d4c572STomoki Sekiyama fclose(fp); 79446d4c572STomoki Sekiyama } 795eab5fd59SPaolo Bonzini #endif 796eab5fd59SPaolo Bonzini 797eab5fd59SPaolo Bonzini #if defined(CONFIG_FSFREEZE) 798c216e5adSMichael Roth 79946d4c572STomoki Sekiyama static char *get_pci_driver(char const *syspath, int pathlen, Error **errp) 80046d4c572STomoki Sekiyama { 80146d4c572STomoki Sekiyama char *path; 80246d4c572STomoki Sekiyama char *dpath; 80346d4c572STomoki Sekiyama char *driver = NULL; 80446d4c572STomoki Sekiyama char buf[PATH_MAX]; 80546d4c572STomoki Sekiyama ssize_t len; 80646d4c572STomoki Sekiyama 80746d4c572STomoki Sekiyama path = g_strndup(syspath, pathlen); 80846d4c572STomoki Sekiyama dpath = g_strdup_printf("%s/driver", path); 80946d4c572STomoki Sekiyama len = readlink(dpath, buf, sizeof(buf) - 1); 81046d4c572STomoki Sekiyama if (len != -1) { 81146d4c572STomoki Sekiyama buf[len] = 0; 8123e015d81SJulia Suvorova driver = g_path_get_basename(buf); 81346d4c572STomoki Sekiyama } 81446d4c572STomoki Sekiyama g_free(dpath); 81546d4c572STomoki Sekiyama g_free(path); 81646d4c572STomoki Sekiyama return driver; 81746d4c572STomoki Sekiyama } 81846d4c572STomoki Sekiyama 81946d4c572STomoki Sekiyama static int compare_uint(const void *_a, const void *_b) 82046d4c572STomoki Sekiyama { 82146d4c572STomoki Sekiyama unsigned int a = *(unsigned int *)_a; 82246d4c572STomoki Sekiyama unsigned int b = *(unsigned int *)_b; 82346d4c572STomoki Sekiyama 82446d4c572STomoki Sekiyama return a < b ? -1 : a > b ? 1 : 0; 82546d4c572STomoki Sekiyama } 82646d4c572STomoki Sekiyama 82746d4c572STomoki Sekiyama /* Walk the specified sysfs and build a sorted list of host or ata numbers */ 82846d4c572STomoki Sekiyama static int build_hosts(char const *syspath, char const *host, bool ata, 82946d4c572STomoki Sekiyama unsigned int *hosts, int hosts_max, Error **errp) 83046d4c572STomoki Sekiyama { 83146d4c572STomoki Sekiyama char *path; 83246d4c572STomoki Sekiyama DIR *dir; 83346d4c572STomoki Sekiyama struct dirent *entry; 83446d4c572STomoki Sekiyama int i = 0; 83546d4c572STomoki Sekiyama 83646d4c572STomoki Sekiyama path = g_strndup(syspath, host - syspath); 83746d4c572STomoki Sekiyama dir = opendir(path); 83846d4c572STomoki Sekiyama if (!dir) { 83946d4c572STomoki Sekiyama error_setg_errno(errp, errno, "opendir(\"%s\")", path); 84046d4c572STomoki Sekiyama g_free(path); 84146d4c572STomoki Sekiyama return -1; 84246d4c572STomoki Sekiyama } 84346d4c572STomoki Sekiyama 84446d4c572STomoki Sekiyama while (i < hosts_max) { 84546d4c572STomoki Sekiyama entry = readdir(dir); 84646d4c572STomoki Sekiyama if (!entry) { 84746d4c572STomoki Sekiyama break; 84846d4c572STomoki Sekiyama } 84946d4c572STomoki Sekiyama if (ata && sscanf(entry->d_name, "ata%d", hosts + i) == 1) { 85046d4c572STomoki Sekiyama ++i; 85146d4c572STomoki Sekiyama } else if (!ata && sscanf(entry->d_name, "host%d", hosts + i) == 1) { 85246d4c572STomoki Sekiyama ++i; 85346d4c572STomoki Sekiyama } 85446d4c572STomoki Sekiyama } 85546d4c572STomoki Sekiyama 85646d4c572STomoki Sekiyama qsort(hosts, i, sizeof(hosts[0]), compare_uint); 85746d4c572STomoki Sekiyama 85846d4c572STomoki Sekiyama g_free(path); 85946d4c572STomoki Sekiyama closedir(dir); 86046d4c572STomoki Sekiyama return i; 86146d4c572STomoki Sekiyama } 86246d4c572STomoki Sekiyama 86346d4c572STomoki Sekiyama /* Store disk device info specified by @sysfs into @fs */ 86446d4c572STomoki Sekiyama static void build_guest_fsinfo_for_real_device(char const *syspath, 86546d4c572STomoki Sekiyama GuestFilesystemInfo *fs, 86646d4c572STomoki Sekiyama Error **errp) 86746d4c572STomoki Sekiyama { 86846d4c572STomoki Sekiyama unsigned int pci[4], host, hosts[8], tgt[3]; 86946d4c572STomoki Sekiyama int i, nhosts = 0, pcilen; 87046d4c572STomoki Sekiyama GuestDiskAddress *disk; 87146d4c572STomoki Sekiyama GuestPCIAddress *pciaddr; 87246d4c572STomoki Sekiyama GuestDiskAddressList *list = NULL; 87346d4c572STomoki Sekiyama bool has_ata = false, has_host = false, has_tgt = false; 87446d4c572STomoki Sekiyama char *p, *q, *driver = NULL; 87546d4c572STomoki Sekiyama 87646d4c572STomoki Sekiyama p = strstr(syspath, "/devices/pci"); 87746d4c572STomoki Sekiyama if (!p || sscanf(p + 12, "%*x:%*x/%x:%x:%x.%x%n", 87846d4c572STomoki Sekiyama pci, pci + 1, pci + 2, pci + 3, &pcilen) < 4) { 879743c71d0SMarc-André Lureau g_debug("only pci device is supported: sysfs path '%s'", syspath); 88046d4c572STomoki Sekiyama return; 88146d4c572STomoki Sekiyama } 88246d4c572STomoki Sekiyama 883743c71d0SMarc-André Lureau p += 12 + pcilen; 884743c71d0SMarc-André Lureau while (true) { 885743c71d0SMarc-André Lureau driver = get_pci_driver(syspath, p - syspath, errp); 886743c71d0SMarc-André Lureau if (driver && (g_str_equal(driver, "ata_piix") || 887743c71d0SMarc-André Lureau g_str_equal(driver, "sym53c8xx") || 888743c71d0SMarc-André Lureau g_str_equal(driver, "virtio-pci") || 889743c71d0SMarc-André Lureau g_str_equal(driver, "ahci"))) { 890743c71d0SMarc-André Lureau break; 891743c71d0SMarc-André Lureau } 892743c71d0SMarc-André Lureau 893743c71d0SMarc-André Lureau if (sscanf(p, "/%x:%x:%x.%x%n", 894743c71d0SMarc-André Lureau pci, pci + 1, pci + 2, pci + 3, &pcilen) == 4) { 895743c71d0SMarc-André Lureau p += pcilen; 896743c71d0SMarc-André Lureau continue; 897743c71d0SMarc-André Lureau } 898743c71d0SMarc-André Lureau 899743c71d0SMarc-André Lureau g_debug("unsupported driver or sysfs path '%s'", syspath); 900743c71d0SMarc-André Lureau return; 90146d4c572STomoki Sekiyama } 90246d4c572STomoki Sekiyama 90346d4c572STomoki Sekiyama p = strstr(syspath, "/target"); 90446d4c572STomoki Sekiyama if (p && sscanf(p + 7, "%*u:%*u:%*u/%*u:%u:%u:%u", 90546d4c572STomoki Sekiyama tgt, tgt + 1, tgt + 2) == 3) { 90646d4c572STomoki Sekiyama has_tgt = true; 90746d4c572STomoki Sekiyama } 90846d4c572STomoki Sekiyama 90946d4c572STomoki Sekiyama p = strstr(syspath, "/ata"); 91046d4c572STomoki Sekiyama if (p) { 91146d4c572STomoki Sekiyama q = p + 4; 91246d4c572STomoki Sekiyama has_ata = true; 91346d4c572STomoki Sekiyama } else { 91446d4c572STomoki Sekiyama p = strstr(syspath, "/host"); 91546d4c572STomoki Sekiyama q = p + 5; 91646d4c572STomoki Sekiyama } 91746d4c572STomoki Sekiyama if (p && sscanf(q, "%u", &host) == 1) { 91846d4c572STomoki Sekiyama has_host = true; 91946d4c572STomoki Sekiyama nhosts = build_hosts(syspath, p, has_ata, hosts, 92001a6df1bSPhilippe Mathieu-Daudé ARRAY_SIZE(hosts), errp); 92146d4c572STomoki Sekiyama if (nhosts < 0) { 92246d4c572STomoki Sekiyama goto cleanup; 92346d4c572STomoki Sekiyama } 92446d4c572STomoki Sekiyama } 92546d4c572STomoki Sekiyama 92646d4c572STomoki Sekiyama pciaddr = g_malloc0(sizeof(*pciaddr)); 92746d4c572STomoki Sekiyama pciaddr->domain = pci[0]; 92846d4c572STomoki Sekiyama pciaddr->bus = pci[1]; 92946d4c572STomoki Sekiyama pciaddr->slot = pci[2]; 93046d4c572STomoki Sekiyama pciaddr->function = pci[3]; 93146d4c572STomoki Sekiyama 93246d4c572STomoki Sekiyama disk = g_malloc0(sizeof(*disk)); 93346d4c572STomoki Sekiyama disk->pci_controller = pciaddr; 93446d4c572STomoki Sekiyama 93546d4c572STomoki Sekiyama list = g_malloc0(sizeof(*list)); 93646d4c572STomoki Sekiyama list->value = disk; 93746d4c572STomoki Sekiyama 93846d4c572STomoki Sekiyama if (strcmp(driver, "ata_piix") == 0) { 93946d4c572STomoki Sekiyama /* a host per ide bus, target*:0:<unit>:0 */ 94046d4c572STomoki Sekiyama if (!has_host || !has_tgt) { 94146d4c572STomoki Sekiyama g_debug("invalid sysfs path '%s' (driver '%s')", syspath, driver); 94246d4c572STomoki Sekiyama goto cleanup; 94346d4c572STomoki Sekiyama } 94446d4c572STomoki Sekiyama for (i = 0; i < nhosts; i++) { 94546d4c572STomoki Sekiyama if (host == hosts[i]) { 94646d4c572STomoki Sekiyama disk->bus_type = GUEST_DISK_BUS_TYPE_IDE; 94746d4c572STomoki Sekiyama disk->bus = i; 94846d4c572STomoki Sekiyama disk->unit = tgt[1]; 94946d4c572STomoki Sekiyama break; 95046d4c572STomoki Sekiyama } 95146d4c572STomoki Sekiyama } 95246d4c572STomoki Sekiyama if (i >= nhosts) { 95346d4c572STomoki Sekiyama g_debug("no host for '%s' (driver '%s')", syspath, driver); 95446d4c572STomoki Sekiyama goto cleanup; 95546d4c572STomoki Sekiyama } 95646d4c572STomoki Sekiyama } else if (strcmp(driver, "sym53c8xx") == 0) { 95746d4c572STomoki Sekiyama /* scsi(LSI Logic): target*:0:<unit>:0 */ 95846d4c572STomoki Sekiyama if (!has_tgt) { 95946d4c572STomoki Sekiyama g_debug("invalid sysfs path '%s' (driver '%s')", syspath, driver); 96046d4c572STomoki Sekiyama goto cleanup; 96146d4c572STomoki Sekiyama } 96246d4c572STomoki Sekiyama disk->bus_type = GUEST_DISK_BUS_TYPE_SCSI; 96346d4c572STomoki Sekiyama disk->unit = tgt[1]; 96446d4c572STomoki Sekiyama } else if (strcmp(driver, "virtio-pci") == 0) { 96546d4c572STomoki Sekiyama if (has_tgt) { 96646d4c572STomoki Sekiyama /* virtio-scsi: target*:0:0:<unit> */ 96746d4c572STomoki Sekiyama disk->bus_type = GUEST_DISK_BUS_TYPE_SCSI; 96846d4c572STomoki Sekiyama disk->unit = tgt[2]; 96946d4c572STomoki Sekiyama } else { 97046d4c572STomoki Sekiyama /* virtio-blk: 1 disk per 1 device */ 97146d4c572STomoki Sekiyama disk->bus_type = GUEST_DISK_BUS_TYPE_VIRTIO; 97246d4c572STomoki Sekiyama } 97346d4c572STomoki Sekiyama } else if (strcmp(driver, "ahci") == 0) { 97446d4c572STomoki Sekiyama /* ahci: 1 host per 1 unit */ 97546d4c572STomoki Sekiyama if (!has_host || !has_tgt) { 97646d4c572STomoki Sekiyama g_debug("invalid sysfs path '%s' (driver '%s')", syspath, driver); 97746d4c572STomoki Sekiyama goto cleanup; 97846d4c572STomoki Sekiyama } 97946d4c572STomoki Sekiyama for (i = 0; i < nhosts; i++) { 98046d4c572STomoki Sekiyama if (host == hosts[i]) { 98146d4c572STomoki Sekiyama disk->unit = i; 98246d4c572STomoki Sekiyama disk->bus_type = GUEST_DISK_BUS_TYPE_SATA; 98346d4c572STomoki Sekiyama break; 98446d4c572STomoki Sekiyama } 98546d4c572STomoki Sekiyama } 98646d4c572STomoki Sekiyama if (i >= nhosts) { 98746d4c572STomoki Sekiyama g_debug("no host for '%s' (driver '%s')", syspath, driver); 98846d4c572STomoki Sekiyama goto cleanup; 98946d4c572STomoki Sekiyama } 99046d4c572STomoki Sekiyama } else { 99146d4c572STomoki Sekiyama g_debug("unknown driver '%s' (sysfs path '%s')", driver, syspath); 99246d4c572STomoki Sekiyama goto cleanup; 99346d4c572STomoki Sekiyama } 99446d4c572STomoki Sekiyama 99546d4c572STomoki Sekiyama list->next = fs->disk; 99646d4c572STomoki Sekiyama fs->disk = list; 99746d4c572STomoki Sekiyama g_free(driver); 99846d4c572STomoki Sekiyama return; 99946d4c572STomoki Sekiyama 100046d4c572STomoki Sekiyama cleanup: 100146d4c572STomoki Sekiyama if (list) { 100246d4c572STomoki Sekiyama qapi_free_GuestDiskAddressList(list); 100346d4c572STomoki Sekiyama } 100446d4c572STomoki Sekiyama g_free(driver); 100546d4c572STomoki Sekiyama } 100646d4c572STomoki Sekiyama 100746d4c572STomoki Sekiyama static void build_guest_fsinfo_for_device(char const *devpath, 100846d4c572STomoki Sekiyama GuestFilesystemInfo *fs, 100946d4c572STomoki Sekiyama Error **errp); 101046d4c572STomoki Sekiyama 101146d4c572STomoki Sekiyama /* Store a list of slave devices of virtual volume specified by @syspath into 101246d4c572STomoki Sekiyama * @fs */ 101346d4c572STomoki Sekiyama static void build_guest_fsinfo_for_virtual_device(char const *syspath, 101446d4c572STomoki Sekiyama GuestFilesystemInfo *fs, 101546d4c572STomoki Sekiyama Error **errp) 101646d4c572STomoki Sekiyama { 101746d4c572STomoki Sekiyama DIR *dir; 101846d4c572STomoki Sekiyama char *dirpath; 1019e668d1b8Szhanghailiang struct dirent *entry; 102046d4c572STomoki Sekiyama 102146d4c572STomoki Sekiyama dirpath = g_strdup_printf("%s/slaves", syspath); 102246d4c572STomoki Sekiyama dir = opendir(dirpath); 102346d4c572STomoki Sekiyama if (!dir) { 10248251a72fSMichael Roth if (errno != ENOENT) { 102546d4c572STomoki Sekiyama error_setg_errno(errp, errno, "opendir(\"%s\")", dirpath); 10268251a72fSMichael Roth } 102746d4c572STomoki Sekiyama g_free(dirpath); 102846d4c572STomoki Sekiyama return; 102946d4c572STomoki Sekiyama } 103046d4c572STomoki Sekiyama 103146d4c572STomoki Sekiyama for (;;) { 1032e668d1b8Szhanghailiang errno = 0; 1033e668d1b8Szhanghailiang entry = readdir(dir); 1034e668d1b8Szhanghailiang if (entry == NULL) { 1035e668d1b8Szhanghailiang if (errno) { 1036e668d1b8Szhanghailiang error_setg_errno(errp, errno, "readdir(\"%s\")", dirpath); 103746d4c572STomoki Sekiyama } 103846d4c572STomoki Sekiyama break; 103946d4c572STomoki Sekiyama } 104046d4c572STomoki Sekiyama 1041e668d1b8Szhanghailiang if (entry->d_type == DT_LNK) { 1042e668d1b8Szhanghailiang char *path; 1043e668d1b8Szhanghailiang 1044e668d1b8Szhanghailiang g_debug(" slave device '%s'", entry->d_name); 1045e668d1b8Szhanghailiang path = g_strdup_printf("%s/slaves/%s", syspath, entry->d_name); 1046e668d1b8Szhanghailiang build_guest_fsinfo_for_device(path, fs, errp); 1047e668d1b8Szhanghailiang g_free(path); 104846d4c572STomoki Sekiyama 104946d4c572STomoki Sekiyama if (*errp) { 105046d4c572STomoki Sekiyama break; 105146d4c572STomoki Sekiyama } 105246d4c572STomoki Sekiyama } 105346d4c572STomoki Sekiyama } 105446d4c572STomoki Sekiyama 1055e668d1b8Szhanghailiang g_free(dirpath); 105646d4c572STomoki Sekiyama closedir(dir); 105746d4c572STomoki Sekiyama } 105846d4c572STomoki Sekiyama 105946d4c572STomoki Sekiyama /* Dispatch to functions for virtual/real device */ 106046d4c572STomoki Sekiyama static void build_guest_fsinfo_for_device(char const *devpath, 106146d4c572STomoki Sekiyama GuestFilesystemInfo *fs, 106246d4c572STomoki Sekiyama Error **errp) 106346d4c572STomoki Sekiyama { 106446d4c572STomoki Sekiyama char *syspath = realpath(devpath, NULL); 106546d4c572STomoki Sekiyama 106646d4c572STomoki Sekiyama if (!syspath) { 106746d4c572STomoki Sekiyama error_setg_errno(errp, errno, "realpath(\"%s\")", devpath); 106846d4c572STomoki Sekiyama return; 106946d4c572STomoki Sekiyama } 107046d4c572STomoki Sekiyama 107146d4c572STomoki Sekiyama if (!fs->name) { 10723e015d81SJulia Suvorova fs->name = g_path_get_basename(syspath); 107346d4c572STomoki Sekiyama } 107446d4c572STomoki Sekiyama 107546d4c572STomoki Sekiyama g_debug(" parse sysfs path '%s'", syspath); 107646d4c572STomoki Sekiyama 107746d4c572STomoki Sekiyama if (strstr(syspath, "/devices/virtual/block/")) { 107846d4c572STomoki Sekiyama build_guest_fsinfo_for_virtual_device(syspath, fs, errp); 107946d4c572STomoki Sekiyama } else { 108046d4c572STomoki Sekiyama build_guest_fsinfo_for_real_device(syspath, fs, errp); 108146d4c572STomoki Sekiyama } 108246d4c572STomoki Sekiyama 108346d4c572STomoki Sekiyama free(syspath); 108446d4c572STomoki Sekiyama } 108546d4c572STomoki Sekiyama 108646d4c572STomoki Sekiyama /* Return a list of the disk device(s)' info which @mount lies on */ 108746d4c572STomoki Sekiyama static GuestFilesystemInfo *build_guest_fsinfo(struct FsMount *mount, 108846d4c572STomoki Sekiyama Error **errp) 108946d4c572STomoki Sekiyama { 109046d4c572STomoki Sekiyama GuestFilesystemInfo *fs = g_malloc0(sizeof(*fs)); 109125b5ff1aSChen Hanxiao struct statvfs buf; 109225b5ff1aSChen Hanxiao unsigned long used, nonroot_total, fr_size; 109346d4c572STomoki Sekiyama char *devpath = g_strdup_printf("/sys/dev/block/%u:%u", 109446d4c572STomoki Sekiyama mount->devmajor, mount->devminor); 109546d4c572STomoki Sekiyama 109646d4c572STomoki Sekiyama fs->mountpoint = g_strdup(mount->dirname); 109746d4c572STomoki Sekiyama fs->type = g_strdup(mount->devtype); 109846d4c572STomoki Sekiyama build_guest_fsinfo_for_device(devpath, fs, errp); 109946d4c572STomoki Sekiyama 110025b5ff1aSChen Hanxiao if (statvfs(fs->mountpoint, &buf) == 0) { 110125b5ff1aSChen Hanxiao fr_size = buf.f_frsize; 110225b5ff1aSChen Hanxiao used = buf.f_blocks - buf.f_bfree; 110325b5ff1aSChen Hanxiao nonroot_total = used + buf.f_bavail; 110425b5ff1aSChen Hanxiao fs->used_bytes = used * fr_size; 110525b5ff1aSChen Hanxiao fs->total_bytes = nonroot_total * fr_size; 110625b5ff1aSChen Hanxiao 110725b5ff1aSChen Hanxiao fs->has_total_bytes = true; 110825b5ff1aSChen Hanxiao fs->has_used_bytes = true; 110925b5ff1aSChen Hanxiao } 111025b5ff1aSChen Hanxiao 111146d4c572STomoki Sekiyama g_free(devpath); 111225b5ff1aSChen Hanxiao 111346d4c572STomoki Sekiyama return fs; 111446d4c572STomoki Sekiyama } 111546d4c572STomoki Sekiyama 111646d4c572STomoki Sekiyama GuestFilesystemInfoList *qmp_guest_get_fsinfo(Error **errp) 111746d4c572STomoki Sekiyama { 111846d4c572STomoki Sekiyama FsMountList mounts; 111946d4c572STomoki Sekiyama struct FsMount *mount; 112046d4c572STomoki Sekiyama GuestFilesystemInfoList *new, *ret = NULL; 112146d4c572STomoki Sekiyama Error *local_err = NULL; 112246d4c572STomoki Sekiyama 112346d4c572STomoki Sekiyama QTAILQ_INIT(&mounts); 112446d4c572STomoki Sekiyama build_fs_mount_list(&mounts, &local_err); 112546d4c572STomoki Sekiyama if (local_err) { 112646d4c572STomoki Sekiyama error_propagate(errp, local_err); 112746d4c572STomoki Sekiyama return NULL; 112846d4c572STomoki Sekiyama } 112946d4c572STomoki Sekiyama 113046d4c572STomoki Sekiyama QTAILQ_FOREACH(mount, &mounts, next) { 113146d4c572STomoki Sekiyama g_debug("Building guest fsinfo for '%s'", mount->dirname); 113246d4c572STomoki Sekiyama 113346d4c572STomoki Sekiyama new = g_malloc0(sizeof(*ret)); 113446d4c572STomoki Sekiyama new->value = build_guest_fsinfo(mount, &local_err); 113546d4c572STomoki Sekiyama new->next = ret; 113646d4c572STomoki Sekiyama ret = new; 113746d4c572STomoki Sekiyama if (local_err) { 113846d4c572STomoki Sekiyama error_propagate(errp, local_err); 113946d4c572STomoki Sekiyama qapi_free_GuestFilesystemInfoList(ret); 114046d4c572STomoki Sekiyama ret = NULL; 114146d4c572STomoki Sekiyama break; 114246d4c572STomoki Sekiyama } 114346d4c572STomoki Sekiyama } 114446d4c572STomoki Sekiyama 114546d4c572STomoki Sekiyama free_fs_mount_list(&mounts); 114646d4c572STomoki Sekiyama return ret; 114746d4c572STomoki Sekiyama } 114846d4c572STomoki Sekiyama 114946d4c572STomoki Sekiyama 1150ec0f694cSTomoki Sekiyama typedef enum { 1151ec0f694cSTomoki Sekiyama FSFREEZE_HOOK_THAW = 0, 1152ec0f694cSTomoki Sekiyama FSFREEZE_HOOK_FREEZE, 1153ec0f694cSTomoki Sekiyama } FsfreezeHookArg; 1154ec0f694cSTomoki Sekiyama 115513a439ecSStefan Weil static const char *fsfreeze_hook_arg_string[] = { 1156ec0f694cSTomoki Sekiyama "thaw", 1157ec0f694cSTomoki Sekiyama "freeze", 1158ec0f694cSTomoki Sekiyama }; 1159ec0f694cSTomoki Sekiyama 116077dbc81bSMarkus Armbruster static void execute_fsfreeze_hook(FsfreezeHookArg arg, Error **errp) 1161ec0f694cSTomoki Sekiyama { 1162ec0f694cSTomoki Sekiyama int status; 1163ec0f694cSTomoki Sekiyama pid_t pid; 1164ec0f694cSTomoki Sekiyama const char *hook; 1165ec0f694cSTomoki Sekiyama const char *arg_str = fsfreeze_hook_arg_string[arg]; 1166ec0f694cSTomoki Sekiyama Error *local_err = NULL; 1167ec0f694cSTomoki Sekiyama 1168ec0f694cSTomoki Sekiyama hook = ga_fsfreeze_hook(ga_state); 1169ec0f694cSTomoki Sekiyama if (!hook) { 1170ec0f694cSTomoki Sekiyama return; 1171ec0f694cSTomoki Sekiyama } 1172ec0f694cSTomoki Sekiyama if (access(hook, X_OK) != 0) { 117377dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "can't access fsfreeze hook '%s'", hook); 1174ec0f694cSTomoki Sekiyama return; 1175ec0f694cSTomoki Sekiyama } 1176ec0f694cSTomoki Sekiyama 1177ec0f694cSTomoki Sekiyama slog("executing fsfreeze hook with arg '%s'", arg_str); 1178ec0f694cSTomoki Sekiyama pid = fork(); 1179ec0f694cSTomoki Sekiyama if (pid == 0) { 1180ec0f694cSTomoki Sekiyama setsid(); 1181ec0f694cSTomoki Sekiyama reopen_fd_to_null(0); 1182ec0f694cSTomoki Sekiyama reopen_fd_to_null(1); 1183ec0f694cSTomoki Sekiyama reopen_fd_to_null(2); 1184ec0f694cSTomoki Sekiyama 1185ec0f694cSTomoki Sekiyama execle(hook, hook, arg_str, NULL, environ); 1186ec0f694cSTomoki Sekiyama _exit(EXIT_FAILURE); 1187ec0f694cSTomoki Sekiyama } else if (pid < 0) { 118877dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to create child process"); 1189ec0f694cSTomoki Sekiyama return; 1190ec0f694cSTomoki Sekiyama } 1191ec0f694cSTomoki Sekiyama 1192ec0f694cSTomoki Sekiyama ga_wait_child(pid, &status, &local_err); 119384d18f06SMarkus Armbruster if (local_err) { 119477dbc81bSMarkus Armbruster error_propagate(errp, local_err); 1195ec0f694cSTomoki Sekiyama return; 1196ec0f694cSTomoki Sekiyama } 1197ec0f694cSTomoki Sekiyama 1198ec0f694cSTomoki Sekiyama if (!WIFEXITED(status)) { 119977dbc81bSMarkus Armbruster error_setg(errp, "fsfreeze hook has terminated abnormally"); 1200ec0f694cSTomoki Sekiyama return; 1201ec0f694cSTomoki Sekiyama } 1202ec0f694cSTomoki Sekiyama 1203ec0f694cSTomoki Sekiyama status = WEXITSTATUS(status); 1204ec0f694cSTomoki Sekiyama if (status) { 120577dbc81bSMarkus Armbruster error_setg(errp, "fsfreeze hook has failed with status %d", status); 1206ec0f694cSTomoki Sekiyama return; 1207ec0f694cSTomoki Sekiyama } 1208ec0f694cSTomoki Sekiyama } 1209ec0f694cSTomoki Sekiyama 1210c216e5adSMichael Roth /* 1211c216e5adSMichael Roth * Return status of freeze/thaw 1212c216e5adSMichael Roth */ 121377dbc81bSMarkus Armbruster GuestFsfreezeStatus qmp_guest_fsfreeze_status(Error **errp) 1214c216e5adSMichael Roth { 1215f22d85e9SMichael Roth if (ga_is_frozen(ga_state)) { 1216f22d85e9SMichael Roth return GUEST_FSFREEZE_STATUS_FROZEN; 1217f22d85e9SMichael Roth } 1218f22d85e9SMichael Roth 1219f22d85e9SMichael Roth return GUEST_FSFREEZE_STATUS_THAWED; 1220c216e5adSMichael Roth } 1221c216e5adSMichael Roth 1222e99bce20STomoki Sekiyama int64_t qmp_guest_fsfreeze_freeze(Error **errp) 1223e99bce20STomoki Sekiyama { 1224e99bce20STomoki Sekiyama return qmp_guest_fsfreeze_freeze_list(false, NULL, errp); 1225e99bce20STomoki Sekiyama } 1226e99bce20STomoki Sekiyama 1227c216e5adSMichael Roth /* 1228c216e5adSMichael Roth * Walk list of mounted file systems in the guest, and freeze the ones which 1229c216e5adSMichael Roth * are real local file systems. 1230c216e5adSMichael Roth */ 1231e99bce20STomoki Sekiyama int64_t qmp_guest_fsfreeze_freeze_list(bool has_mountpoints, 1232e99bce20STomoki Sekiyama strList *mountpoints, 1233e99bce20STomoki Sekiyama Error **errp) 1234c216e5adSMichael Roth { 1235c216e5adSMichael Roth int ret = 0, i = 0; 1236e99bce20STomoki Sekiyama strList *list; 1237af02203fSPaolo Bonzini FsMountList mounts; 1238af02203fSPaolo Bonzini struct FsMount *mount; 1239261551d1SLuiz Capitulino Error *local_err = NULL; 1240c216e5adSMichael Roth int fd; 1241c216e5adSMichael Roth 1242c216e5adSMichael Roth slog("guest-fsfreeze called"); 1243c216e5adSMichael Roth 1244ec0f694cSTomoki Sekiyama execute_fsfreeze_hook(FSFREEZE_HOOK_FREEZE, &local_err); 124584d18f06SMarkus Armbruster if (local_err) { 124677dbc81bSMarkus Armbruster error_propagate(errp, local_err); 1247ec0f694cSTomoki Sekiyama return -1; 1248ec0f694cSTomoki Sekiyama } 1249ec0f694cSTomoki Sekiyama 12509e8aded4SMichael Roth QTAILQ_INIT(&mounts); 1251261551d1SLuiz Capitulino build_fs_mount_list(&mounts, &local_err); 125284d18f06SMarkus Armbruster if (local_err) { 125377dbc81bSMarkus Armbruster error_propagate(errp, local_err); 1254261551d1SLuiz Capitulino return -1; 1255c216e5adSMichael Roth } 1256c216e5adSMichael Roth 1257c216e5adSMichael Roth /* cannot risk guest agent blocking itself on a write in this state */ 1258f22d85e9SMichael Roth ga_set_frozen(ga_state); 1259c216e5adSMichael Roth 1260e5d9adbdSTomoki Sekiyama QTAILQ_FOREACH_REVERSE(mount, &mounts, FsMountList, next) { 1261e99bce20STomoki Sekiyama /* To issue fsfreeze in the reverse order of mounts, check if the 1262e99bce20STomoki Sekiyama * mount is listed in the list here */ 1263e99bce20STomoki Sekiyama if (has_mountpoints) { 1264e99bce20STomoki Sekiyama for (list = mountpoints; list; list = list->next) { 1265e99bce20STomoki Sekiyama if (strcmp(list->value, mount->dirname) == 0) { 1266e99bce20STomoki Sekiyama break; 1267e99bce20STomoki Sekiyama } 1268e99bce20STomoki Sekiyama } 1269e99bce20STomoki Sekiyama if (!list) { 1270e99bce20STomoki Sekiyama continue; 1271e99bce20STomoki Sekiyama } 1272e99bce20STomoki Sekiyama } 1273e99bce20STomoki Sekiyama 1274c216e5adSMichael Roth fd = qemu_open(mount->dirname, O_RDONLY); 1275c216e5adSMichael Roth if (fd == -1) { 127677dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to open %s", mount->dirname); 1277c216e5adSMichael Roth goto error; 1278c216e5adSMichael Roth } 1279c216e5adSMichael Roth 1280e35916acSMichael Tokarev /* we try to cull filesystems we know won't work in advance, but other 1281e35916acSMichael Tokarev * filesystems may not implement fsfreeze for less obvious reasons. 12829e8aded4SMichael Roth * these will report EOPNOTSUPP. we simply ignore these when tallying 12839e8aded4SMichael Roth * the number of frozen filesystems. 1284ce2eb6c4SPeter Lieven * if a filesystem is mounted more than once (aka bind mount) a 1285ce2eb6c4SPeter Lieven * consecutive attempt to freeze an already frozen filesystem will 1286ce2eb6c4SPeter Lieven * return EBUSY. 12879e8aded4SMichael Roth * 12889e8aded4SMichael Roth * any other error means a failure to freeze a filesystem we 12899e8aded4SMichael Roth * expect to be freezable, so return an error in those cases 12909e8aded4SMichael Roth * and return system to thawed state. 1291c216e5adSMichael Roth */ 1292c216e5adSMichael Roth ret = ioctl(fd, FIFREEZE); 12939e8aded4SMichael Roth if (ret == -1) { 1294ce2eb6c4SPeter Lieven if (errno != EOPNOTSUPP && errno != EBUSY) { 129577dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to freeze %s", 1296617fbbc1SLuiz Capitulino mount->dirname); 1297c216e5adSMichael Roth close(fd); 1298c216e5adSMichael Roth goto error; 1299c216e5adSMichael Roth } 13009e8aded4SMichael Roth } else { 1301c216e5adSMichael Roth i++; 1302c216e5adSMichael Roth } 13039e8aded4SMichael Roth close(fd); 13049e8aded4SMichael Roth } 1305c216e5adSMichael Roth 1306af02203fSPaolo Bonzini free_fs_mount_list(&mounts); 130765650f01SChen Hanxiao /* We may not issue any FIFREEZE here. 130865650f01SChen Hanxiao * Just unset ga_state here and ready for the next call. 130965650f01SChen Hanxiao */ 131065650f01SChen Hanxiao if (i == 0) { 131165650f01SChen Hanxiao ga_unset_frozen(ga_state); 131265650f01SChen Hanxiao } 1313c216e5adSMichael Roth return i; 1314c216e5adSMichael Roth 1315c216e5adSMichael Roth error: 1316af02203fSPaolo Bonzini free_fs_mount_list(&mounts); 1317c216e5adSMichael Roth qmp_guest_fsfreeze_thaw(NULL); 1318c216e5adSMichael Roth return 0; 1319c216e5adSMichael Roth } 1320c216e5adSMichael Roth 1321c216e5adSMichael Roth /* 1322c216e5adSMichael Roth * Walk list of frozen file systems in the guest, and thaw them. 1323c216e5adSMichael Roth */ 132477dbc81bSMarkus Armbruster int64_t qmp_guest_fsfreeze_thaw(Error **errp) 1325c216e5adSMichael Roth { 1326c216e5adSMichael Roth int ret; 1327af02203fSPaolo Bonzini FsMountList mounts; 1328af02203fSPaolo Bonzini FsMount *mount; 13299e8aded4SMichael Roth int fd, i = 0, logged; 1330261551d1SLuiz Capitulino Error *local_err = NULL; 1331c216e5adSMichael Roth 13329e8aded4SMichael Roth QTAILQ_INIT(&mounts); 1333261551d1SLuiz Capitulino build_fs_mount_list(&mounts, &local_err); 133484d18f06SMarkus Armbruster if (local_err) { 133577dbc81bSMarkus Armbruster error_propagate(errp, local_err); 13369e8aded4SMichael Roth return 0; 13379e8aded4SMichael Roth } 13389e8aded4SMichael Roth 13399e8aded4SMichael Roth QTAILQ_FOREACH(mount, &mounts, next) { 13409e8aded4SMichael Roth logged = false; 1341c216e5adSMichael Roth fd = qemu_open(mount->dirname, O_RDONLY); 1342c216e5adSMichael Roth if (fd == -1) { 1343c216e5adSMichael Roth continue; 1344c216e5adSMichael Roth } 13459e8aded4SMichael Roth /* we have no way of knowing whether a filesystem was actually unfrozen 13469e8aded4SMichael Roth * as a result of a successful call to FITHAW, only that if an error 13479e8aded4SMichael Roth * was returned the filesystem was *not* unfrozen by that particular 13489e8aded4SMichael Roth * call. 13499e8aded4SMichael Roth * 1350a31f0531SJim Meyering * since multiple preceding FIFREEZEs require multiple calls to FITHAW 13519e8aded4SMichael Roth * to unfreeze, continuing issuing FITHAW until an error is returned, 13529e8aded4SMichael Roth * in which case either the filesystem is in an unfreezable state, or, 13539e8aded4SMichael Roth * more likely, it was thawed previously (and remains so afterward). 13549e8aded4SMichael Roth * 13559e8aded4SMichael Roth * also, since the most recent successful call is the one that did 13569e8aded4SMichael Roth * the actual unfreeze, we can use this to provide an accurate count 13579e8aded4SMichael Roth * of the number of filesystems unfrozen by guest-fsfreeze-thaw, which 13589e8aded4SMichael Roth * may * be useful for determining whether a filesystem was unfrozen 13599e8aded4SMichael Roth * during the freeze/thaw phase by a process other than qemu-ga. 13609e8aded4SMichael Roth */ 13619e8aded4SMichael Roth do { 1362c216e5adSMichael Roth ret = ioctl(fd, FITHAW); 13639e8aded4SMichael Roth if (ret == 0 && !logged) { 1364c216e5adSMichael Roth i++; 13659e8aded4SMichael Roth logged = true; 13669e8aded4SMichael Roth } 13679e8aded4SMichael Roth } while (ret == 0); 13689e8aded4SMichael Roth close(fd); 1369c216e5adSMichael Roth } 1370c216e5adSMichael Roth 1371f22d85e9SMichael Roth ga_unset_frozen(ga_state); 1372af02203fSPaolo Bonzini free_fs_mount_list(&mounts); 1373ec0f694cSTomoki Sekiyama 137477dbc81bSMarkus Armbruster execute_fsfreeze_hook(FSFREEZE_HOOK_THAW, errp); 1375ec0f694cSTomoki Sekiyama 1376c216e5adSMichael Roth return i; 1377c216e5adSMichael Roth } 1378c216e5adSMichael Roth 1379c216e5adSMichael Roth static void guest_fsfreeze_cleanup(void) 1380c216e5adSMichael Roth { 1381c216e5adSMichael Roth Error *err = NULL; 1382c216e5adSMichael Roth 1383f22d85e9SMichael Roth if (ga_is_frozen(ga_state) == GUEST_FSFREEZE_STATUS_FROZEN) { 13846f686749SMarkus Armbruster qmp_guest_fsfreeze_thaw(&err); 13856f686749SMarkus Armbruster if (err) { 13866f686749SMarkus Armbruster slog("failed to clean up frozen filesystems: %s", 13876f686749SMarkus Armbruster error_get_pretty(err)); 13886f686749SMarkus Armbruster error_free(err); 1389c216e5adSMichael Roth } 1390c216e5adSMichael Roth } 1391c216e5adSMichael Roth } 1392e72c3f2eSMichael Roth #endif /* CONFIG_FSFREEZE */ 1393c216e5adSMichael Roth 1394eab5fd59SPaolo Bonzini #if defined(CONFIG_FSTRIM) 1395eab5fd59SPaolo Bonzini /* 1396eab5fd59SPaolo Bonzini * Walk list of mounted file systems in the guest, and trim them. 1397eab5fd59SPaolo Bonzini */ 1398e82855d9SJustin Ossevoort GuestFilesystemTrimResponse * 1399e82855d9SJustin Ossevoort qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **errp) 1400eab5fd59SPaolo Bonzini { 1401e82855d9SJustin Ossevoort GuestFilesystemTrimResponse *response; 1402e82855d9SJustin Ossevoort GuestFilesystemTrimResultList *list; 1403e82855d9SJustin Ossevoort GuestFilesystemTrimResult *result; 1404eab5fd59SPaolo Bonzini int ret = 0; 1405eab5fd59SPaolo Bonzini FsMountList mounts; 1406eab5fd59SPaolo Bonzini struct FsMount *mount; 1407eab5fd59SPaolo Bonzini int fd; 1408261551d1SLuiz Capitulino Error *local_err = NULL; 140973a652a1SJustin Ossevoort struct fstrim_range r; 1410eab5fd59SPaolo Bonzini 1411eab5fd59SPaolo Bonzini slog("guest-fstrim called"); 1412eab5fd59SPaolo Bonzini 1413eab5fd59SPaolo Bonzini QTAILQ_INIT(&mounts); 1414261551d1SLuiz Capitulino build_fs_mount_list(&mounts, &local_err); 141584d18f06SMarkus Armbruster if (local_err) { 141677dbc81bSMarkus Armbruster error_propagate(errp, local_err); 1417e82855d9SJustin Ossevoort return NULL; 1418eab5fd59SPaolo Bonzini } 1419eab5fd59SPaolo Bonzini 1420e82855d9SJustin Ossevoort response = g_malloc0(sizeof(*response)); 1421e82855d9SJustin Ossevoort 1422eab5fd59SPaolo Bonzini QTAILQ_FOREACH(mount, &mounts, next) { 1423e82855d9SJustin Ossevoort result = g_malloc0(sizeof(*result)); 1424e82855d9SJustin Ossevoort result->path = g_strdup(mount->dirname); 1425e82855d9SJustin Ossevoort 1426e82855d9SJustin Ossevoort list = g_malloc0(sizeof(*list)); 1427e82855d9SJustin Ossevoort list->value = result; 1428e82855d9SJustin Ossevoort list->next = response->paths; 1429e82855d9SJustin Ossevoort response->paths = list; 1430e82855d9SJustin Ossevoort 1431eab5fd59SPaolo Bonzini fd = qemu_open(mount->dirname, O_RDONLY); 1432eab5fd59SPaolo Bonzini if (fd == -1) { 1433e82855d9SJustin Ossevoort result->error = g_strdup_printf("failed to open: %s", 1434e82855d9SJustin Ossevoort strerror(errno)); 1435e82855d9SJustin Ossevoort result->has_error = true; 1436e82855d9SJustin Ossevoort continue; 1437eab5fd59SPaolo Bonzini } 1438eab5fd59SPaolo Bonzini 1439e35916acSMichael Tokarev /* We try to cull filesystems we know won't work in advance, but other 1440e35916acSMichael Tokarev * filesystems may not implement fstrim for less obvious reasons. 1441e35916acSMichael Tokarev * These will report EOPNOTSUPP; while in some other cases ENOTTY 1442e35916acSMichael Tokarev * will be reported (e.g. CD-ROMs). 1443e82855d9SJustin Ossevoort * Any other error means an unexpected error. 1444eab5fd59SPaolo Bonzini */ 144573a652a1SJustin Ossevoort r.start = 0; 144673a652a1SJustin Ossevoort r.len = -1; 144773a652a1SJustin Ossevoort r.minlen = has_minimum ? minimum : 0; 1448eab5fd59SPaolo Bonzini ret = ioctl(fd, FITRIM, &r); 1449eab5fd59SPaolo Bonzini if (ret == -1) { 1450e82855d9SJustin Ossevoort result->has_error = true; 1451e82855d9SJustin Ossevoort if (errno == ENOTTY || errno == EOPNOTSUPP) { 1452e82855d9SJustin Ossevoort result->error = g_strdup("trim not supported"); 1453e82855d9SJustin Ossevoort } else { 1454e82855d9SJustin Ossevoort result->error = g_strdup_printf("failed to trim: %s", 1455e82855d9SJustin Ossevoort strerror(errno)); 1456e82855d9SJustin Ossevoort } 1457eab5fd59SPaolo Bonzini close(fd); 1458e82855d9SJustin Ossevoort continue; 1459eab5fd59SPaolo Bonzini } 1460e82855d9SJustin Ossevoort 1461e82855d9SJustin Ossevoort result->has_minimum = true; 1462e82855d9SJustin Ossevoort result->minimum = r.minlen; 1463e82855d9SJustin Ossevoort result->has_trimmed = true; 1464e82855d9SJustin Ossevoort result->trimmed = r.len; 1465eab5fd59SPaolo Bonzini close(fd); 1466eab5fd59SPaolo Bonzini } 1467eab5fd59SPaolo Bonzini 1468eab5fd59SPaolo Bonzini free_fs_mount_list(&mounts); 1469e82855d9SJustin Ossevoort return response; 1470eab5fd59SPaolo Bonzini } 1471eab5fd59SPaolo Bonzini #endif /* CONFIG_FSTRIM */ 1472eab5fd59SPaolo Bonzini 1473eab5fd59SPaolo Bonzini 147411d0f125SLuiz Capitulino #define LINUX_SYS_STATE_FILE "/sys/power/state" 147511d0f125SLuiz Capitulino #define SUSPEND_SUPPORTED 0 147611d0f125SLuiz Capitulino #define SUSPEND_NOT_SUPPORTED 1 147711d0f125SLuiz Capitulino 14788b020b5eSDaniel Henrique Barboza typedef enum { 14798b020b5eSDaniel Henrique Barboza SUSPEND_MODE_DISK = 0, 14808b020b5eSDaniel Henrique Barboza SUSPEND_MODE_RAM = 1, 14818b020b5eSDaniel Henrique Barboza SUSPEND_MODE_HYBRID = 2, 14828b020b5eSDaniel Henrique Barboza } SuspendMode; 14838b020b5eSDaniel Henrique Barboza 14848b020b5eSDaniel Henrique Barboza /* 14858b020b5eSDaniel Henrique Barboza * Executes a command in a child process using g_spawn_sync, 14868b020b5eSDaniel Henrique Barboza * returning an int >= 0 representing the exit status of the 14878b020b5eSDaniel Henrique Barboza * process. 14888b020b5eSDaniel Henrique Barboza * 14898b020b5eSDaniel Henrique Barboza * If the program wasn't found in path, returns -1. 14908b020b5eSDaniel Henrique Barboza * 14918b020b5eSDaniel Henrique Barboza * If a problem happened when creating the child process, 14928b020b5eSDaniel Henrique Barboza * returns -1 and errp is set. 14938b020b5eSDaniel Henrique Barboza */ 14948b020b5eSDaniel Henrique Barboza static int run_process_child(const char *command[], Error **errp) 14958b020b5eSDaniel Henrique Barboza { 14968b020b5eSDaniel Henrique Barboza int exit_status, spawn_flag; 14978b020b5eSDaniel Henrique Barboza GError *g_err = NULL; 14988b020b5eSDaniel Henrique Barboza bool success; 14998b020b5eSDaniel Henrique Barboza 15008b020b5eSDaniel Henrique Barboza spawn_flag = G_SPAWN_SEARCH_PATH | G_SPAWN_STDOUT_TO_DEV_NULL | 15018b020b5eSDaniel Henrique Barboza G_SPAWN_STDERR_TO_DEV_NULL; 15028b020b5eSDaniel Henrique Barboza 15038b020b5eSDaniel Henrique Barboza success = g_spawn_sync(NULL, (char **)command, environ, spawn_flag, 15048b020b5eSDaniel Henrique Barboza NULL, NULL, NULL, NULL, 15058b020b5eSDaniel Henrique Barboza &exit_status, &g_err); 15068b020b5eSDaniel Henrique Barboza 15078b020b5eSDaniel Henrique Barboza if (success) { 15088b020b5eSDaniel Henrique Barboza return WEXITSTATUS(exit_status); 15098b020b5eSDaniel Henrique Barboza } 15108b020b5eSDaniel Henrique Barboza 15118b020b5eSDaniel Henrique Barboza if (g_err && (g_err->code != G_SPAWN_ERROR_NOENT)) { 15128b020b5eSDaniel Henrique Barboza error_setg(errp, "failed to create child process, error '%s'", 15138b020b5eSDaniel Henrique Barboza g_err->message); 15148b020b5eSDaniel Henrique Barboza } 15158b020b5eSDaniel Henrique Barboza 15168b020b5eSDaniel Henrique Barboza g_error_free(g_err); 15178b020b5eSDaniel Henrique Barboza return -1; 15188b020b5eSDaniel Henrique Barboza } 15198b020b5eSDaniel Henrique Barboza 1520067927d6SDaniel Henrique Barboza static bool systemd_supports_mode(SuspendMode mode, Error **errp) 1521067927d6SDaniel Henrique Barboza { 1522067927d6SDaniel Henrique Barboza Error *local_err = NULL; 1523067927d6SDaniel Henrique Barboza const char *systemctl_args[3] = {"systemd-hibernate", "systemd-suspend", 1524067927d6SDaniel Henrique Barboza "systemd-hybrid-sleep"}; 1525067927d6SDaniel Henrique Barboza const char *cmd[4] = {"systemctl", "status", systemctl_args[mode], NULL}; 1526067927d6SDaniel Henrique Barboza int status; 1527067927d6SDaniel Henrique Barboza 1528067927d6SDaniel Henrique Barboza status = run_process_child(cmd, &local_err); 1529067927d6SDaniel Henrique Barboza 1530067927d6SDaniel Henrique Barboza /* 1531067927d6SDaniel Henrique Barboza * systemctl status uses LSB return codes so we can expect 1532067927d6SDaniel Henrique Barboza * status > 0 and be ok. To assert if the guest has support 1533067927d6SDaniel Henrique Barboza * for the selected suspend mode, status should be < 4. 4 is 1534067927d6SDaniel Henrique Barboza * the code for unknown service status, the return value when 1535067927d6SDaniel Henrique Barboza * the service does not exist. A common value is status = 3 1536067927d6SDaniel Henrique Barboza * (program is not running). 1537067927d6SDaniel Henrique Barboza */ 1538067927d6SDaniel Henrique Barboza if (status > 0 && status < 4) { 1539067927d6SDaniel Henrique Barboza return true; 1540067927d6SDaniel Henrique Barboza } 1541067927d6SDaniel Henrique Barboza 1542067927d6SDaniel Henrique Barboza if (local_err) { 1543067927d6SDaniel Henrique Barboza error_propagate(errp, local_err); 1544067927d6SDaniel Henrique Barboza } 1545067927d6SDaniel Henrique Barboza 1546067927d6SDaniel Henrique Barboza return false; 1547067927d6SDaniel Henrique Barboza } 1548067927d6SDaniel Henrique Barboza 1549067927d6SDaniel Henrique Barboza static void systemd_suspend(SuspendMode mode, Error **errp) 1550067927d6SDaniel Henrique Barboza { 1551067927d6SDaniel Henrique Barboza Error *local_err = NULL; 1552067927d6SDaniel Henrique Barboza const char *systemctl_args[3] = {"hibernate", "suspend", "hybrid-sleep"}; 1553067927d6SDaniel Henrique Barboza const char *cmd[3] = {"systemctl", systemctl_args[mode], NULL}; 1554067927d6SDaniel Henrique Barboza int status; 1555067927d6SDaniel Henrique Barboza 1556067927d6SDaniel Henrique Barboza status = run_process_child(cmd, &local_err); 1557067927d6SDaniel Henrique Barboza 1558067927d6SDaniel Henrique Barboza if (status == 0) { 1559067927d6SDaniel Henrique Barboza return; 1560067927d6SDaniel Henrique Barboza } 1561067927d6SDaniel Henrique Barboza 1562067927d6SDaniel Henrique Barboza if ((status == -1) && !local_err) { 1563067927d6SDaniel Henrique Barboza error_setg(errp, "the helper program 'systemctl %s' was not found", 1564067927d6SDaniel Henrique Barboza systemctl_args[mode]); 1565067927d6SDaniel Henrique Barboza return; 1566067927d6SDaniel Henrique Barboza } 1567067927d6SDaniel Henrique Barboza 1568067927d6SDaniel Henrique Barboza if (local_err) { 1569067927d6SDaniel Henrique Barboza error_propagate(errp, local_err); 1570067927d6SDaniel Henrique Barboza } else { 1571067927d6SDaniel Henrique Barboza error_setg(errp, "the helper program 'systemctl %s' returned an " 1572067927d6SDaniel Henrique Barboza "unexpected exit status code (%d)", 1573067927d6SDaniel Henrique Barboza systemctl_args[mode], status); 1574067927d6SDaniel Henrique Barboza } 1575067927d6SDaniel Henrique Barboza } 1576067927d6SDaniel Henrique Barboza 15778b020b5eSDaniel Henrique Barboza static bool pmutils_supports_mode(SuspendMode mode, Error **errp) 157811d0f125SLuiz Capitulino { 15796b26e837SLuiz Capitulino Error *local_err = NULL; 15808b020b5eSDaniel Henrique Barboza const char *pmutils_args[3] = {"--hibernate", "--suspend", 15818b020b5eSDaniel Henrique Barboza "--suspend-hybrid"}; 15828b020b5eSDaniel Henrique Barboza const char *cmd[3] = {"pm-is-supported", pmutils_args[mode], NULL}; 1583dc8764f0SLuiz Capitulino int status; 158411d0f125SLuiz Capitulino 15858b020b5eSDaniel Henrique Barboza status = run_process_child(cmd, &local_err); 1586304a0fcbSDaniel Henrique Barboza 15878b020b5eSDaniel Henrique Barboza if (status == SUSPEND_SUPPORTED) { 15888b020b5eSDaniel Henrique Barboza return true; 1589304a0fcbSDaniel Henrique Barboza } 1590304a0fcbSDaniel Henrique Barboza 15918b020b5eSDaniel Henrique Barboza if ((status == -1) && !local_err) { 15928b020b5eSDaniel Henrique Barboza return false; 1593a5fcf0e3SDaniel Henrique Barboza } 159411d0f125SLuiz Capitulino 159584d18f06SMarkus Armbruster if (local_err) { 159677dbc81bSMarkus Armbruster error_propagate(errp, local_err); 15978b020b5eSDaniel Henrique Barboza } else { 159877dbc81bSMarkus Armbruster error_setg(errp, 15998b020b5eSDaniel Henrique Barboza "the helper program '%s' returned an unexpected exit" 16008b020b5eSDaniel Henrique Barboza " status code (%d)", "pm-is-supported", status); 1601dc8764f0SLuiz Capitulino } 160211d0f125SLuiz Capitulino 16038b020b5eSDaniel Henrique Barboza return false; 1604a5fcf0e3SDaniel Henrique Barboza } 1605a5fcf0e3SDaniel Henrique Barboza 16068b020b5eSDaniel Henrique Barboza static void pmutils_suspend(SuspendMode mode, Error **errp) 1607246d76ebSDaniel Henrique Barboza { 1608246d76ebSDaniel Henrique Barboza Error *local_err = NULL; 16098b020b5eSDaniel Henrique Barboza const char *pmutils_binaries[3] = {"pm-hibernate", "pm-suspend", 16108b020b5eSDaniel Henrique Barboza "pm-suspend-hybrid"}; 16118b020b5eSDaniel Henrique Barboza const char *cmd[2] = {pmutils_binaries[mode], NULL}; 1612246d76ebSDaniel Henrique Barboza int status; 1613246d76ebSDaniel Henrique Barboza 16148b020b5eSDaniel Henrique Barboza status = run_process_child(cmd, &local_err); 1615246d76ebSDaniel Henrique Barboza 16168b020b5eSDaniel Henrique Barboza if (status == 0) { 1617246d76ebSDaniel Henrique Barboza return; 1618246d76ebSDaniel Henrique Barboza } 1619246d76ebSDaniel Henrique Barboza 16208b020b5eSDaniel Henrique Barboza if ((status == -1) && !local_err) { 16218b020b5eSDaniel Henrique Barboza error_setg(errp, "the helper program '%s' was not found", 16228b020b5eSDaniel Henrique Barboza pmutils_binaries[mode]); 1623246d76ebSDaniel Henrique Barboza return; 1624246d76ebSDaniel Henrique Barboza } 1625246d76ebSDaniel Henrique Barboza 1626246d76ebSDaniel Henrique Barboza if (local_err) { 1627246d76ebSDaniel Henrique Barboza error_propagate(errp, local_err); 16288b020b5eSDaniel Henrique Barboza } else { 1629246d76ebSDaniel Henrique Barboza error_setg(errp, 16308b020b5eSDaniel Henrique Barboza "the helper program '%s' returned an unexpected exit" 16318b020b5eSDaniel Henrique Barboza " status code (%d)", pmutils_binaries[mode], status); 16328b020b5eSDaniel Henrique Barboza } 1633246d76ebSDaniel Henrique Barboza } 1634246d76ebSDaniel Henrique Barboza 16358b020b5eSDaniel Henrique Barboza static bool linux_sys_state_supports_mode(SuspendMode mode, Error **errp) 1636a5fcf0e3SDaniel Henrique Barboza { 16378b020b5eSDaniel Henrique Barboza const char *sysfile_strs[3] = {"disk", "mem", NULL}; 16388b020b5eSDaniel Henrique Barboza const char *sysfile_str = sysfile_strs[mode]; 1639a5fcf0e3SDaniel Henrique Barboza char buf[32]; /* hopefully big enough */ 1640a5fcf0e3SDaniel Henrique Barboza int fd; 1641a5fcf0e3SDaniel Henrique Barboza ssize_t ret; 1642a5fcf0e3SDaniel Henrique Barboza 16438b020b5eSDaniel Henrique Barboza if (!sysfile_str) { 16448b020b5eSDaniel Henrique Barboza error_setg(errp, "unknown guest suspend mode"); 1645a5fcf0e3SDaniel Henrique Barboza return false; 1646a5fcf0e3SDaniel Henrique Barboza } 1647a5fcf0e3SDaniel Henrique Barboza 1648a5fcf0e3SDaniel Henrique Barboza fd = open(LINUX_SYS_STATE_FILE, O_RDONLY); 1649a5fcf0e3SDaniel Henrique Barboza if (fd < 0) { 1650a5fcf0e3SDaniel Henrique Barboza return false; 1651a5fcf0e3SDaniel Henrique Barboza } 1652a5fcf0e3SDaniel Henrique Barboza 1653a5fcf0e3SDaniel Henrique Barboza ret = read(fd, buf, sizeof(buf) - 1); 1654a5fcf0e3SDaniel Henrique Barboza if (ret <= 0) { 1655a5fcf0e3SDaniel Henrique Barboza return false; 1656a5fcf0e3SDaniel Henrique Barboza } 1657a5fcf0e3SDaniel Henrique Barboza buf[ret] = '\0'; 1658a5fcf0e3SDaniel Henrique Barboza 1659a5fcf0e3SDaniel Henrique Barboza if (strstr(buf, sysfile_str)) { 1660a5fcf0e3SDaniel Henrique Barboza return true; 1661a5fcf0e3SDaniel Henrique Barboza } 1662a5fcf0e3SDaniel Henrique Barboza return false; 1663a5fcf0e3SDaniel Henrique Barboza } 1664a5fcf0e3SDaniel Henrique Barboza 16658b020b5eSDaniel Henrique Barboza static void linux_sys_state_suspend(SuspendMode mode, Error **errp) 1666246d76ebSDaniel Henrique Barboza { 1667246d76ebSDaniel Henrique Barboza Error *local_err = NULL; 16688b020b5eSDaniel Henrique Barboza const char *sysfile_strs[3] = {"disk", "mem", NULL}; 16698b020b5eSDaniel Henrique Barboza const char *sysfile_str = sysfile_strs[mode]; 1670246d76ebSDaniel Henrique Barboza pid_t pid; 1671246d76ebSDaniel Henrique Barboza int status; 1672246d76ebSDaniel Henrique Barboza 16738b020b5eSDaniel Henrique Barboza if (!sysfile_str) { 1674246d76ebSDaniel Henrique Barboza error_setg(errp, "unknown guest suspend mode"); 1675246d76ebSDaniel Henrique Barboza return; 1676246d76ebSDaniel Henrique Barboza } 1677246d76ebSDaniel Henrique Barboza 1678246d76ebSDaniel Henrique Barboza pid = fork(); 1679246d76ebSDaniel Henrique Barboza if (!pid) { 1680246d76ebSDaniel Henrique Barboza /* child */ 1681246d76ebSDaniel Henrique Barboza int fd; 1682246d76ebSDaniel Henrique Barboza 1683246d76ebSDaniel Henrique Barboza setsid(); 1684246d76ebSDaniel Henrique Barboza reopen_fd_to_null(0); 1685246d76ebSDaniel Henrique Barboza reopen_fd_to_null(1); 1686246d76ebSDaniel Henrique Barboza reopen_fd_to_null(2); 1687246d76ebSDaniel Henrique Barboza 1688246d76ebSDaniel Henrique Barboza fd = open(LINUX_SYS_STATE_FILE, O_WRONLY); 1689246d76ebSDaniel Henrique Barboza if (fd < 0) { 1690246d76ebSDaniel Henrique Barboza _exit(EXIT_FAILURE); 1691246d76ebSDaniel Henrique Barboza } 1692246d76ebSDaniel Henrique Barboza 1693246d76ebSDaniel Henrique Barboza if (write(fd, sysfile_str, strlen(sysfile_str)) < 0) { 1694246d76ebSDaniel Henrique Barboza _exit(EXIT_FAILURE); 1695246d76ebSDaniel Henrique Barboza } 1696246d76ebSDaniel Henrique Barboza 1697246d76ebSDaniel Henrique Barboza _exit(EXIT_SUCCESS); 1698246d76ebSDaniel Henrique Barboza } else if (pid < 0) { 1699246d76ebSDaniel Henrique Barboza error_setg_errno(errp, errno, "failed to create child process"); 1700246d76ebSDaniel Henrique Barboza return; 1701246d76ebSDaniel Henrique Barboza } 1702246d76ebSDaniel Henrique Barboza 1703246d76ebSDaniel Henrique Barboza ga_wait_child(pid, &status, &local_err); 1704246d76ebSDaniel Henrique Barboza if (local_err) { 1705246d76ebSDaniel Henrique Barboza error_propagate(errp, local_err); 1706246d76ebSDaniel Henrique Barboza return; 1707246d76ebSDaniel Henrique Barboza } 1708246d76ebSDaniel Henrique Barboza 1709246d76ebSDaniel Henrique Barboza if (WEXITSTATUS(status)) { 1710246d76ebSDaniel Henrique Barboza error_setg(errp, "child process has failed to suspend"); 1711246d76ebSDaniel Henrique Barboza } 1712246d76ebSDaniel Henrique Barboza 1713246d76ebSDaniel Henrique Barboza } 1714246d76ebSDaniel Henrique Barboza 17158b020b5eSDaniel Henrique Barboza static void guest_suspend(SuspendMode mode, Error **errp) 171611d0f125SLuiz Capitulino { 17177b376087SLuiz Capitulino Error *local_err = NULL; 1718*73e1d8ebSDaniel Henrique Barboza bool mode_supported = false; 171911d0f125SLuiz Capitulino 1720*73e1d8ebSDaniel Henrique Barboza if (systemd_supports_mode(mode, &local_err)) { 1721*73e1d8ebSDaniel Henrique Barboza mode_supported = true; 1722067927d6SDaniel Henrique Barboza systemd_suspend(mode, &local_err); 1723*73e1d8ebSDaniel Henrique Barboza } 1724*73e1d8ebSDaniel Henrique Barboza 1725067927d6SDaniel Henrique Barboza if (!local_err) { 1726067927d6SDaniel Henrique Barboza return; 1727067927d6SDaniel Henrique Barboza } 1728067927d6SDaniel Henrique Barboza 1729067927d6SDaniel Henrique Barboza error_free(local_err); 1730067927d6SDaniel Henrique Barboza 1731*73e1d8ebSDaniel Henrique Barboza if (pmutils_supports_mode(mode, &local_err)) { 1732*73e1d8ebSDaniel Henrique Barboza mode_supported = true; 17338b020b5eSDaniel Henrique Barboza pmutils_suspend(mode, &local_err); 1734*73e1d8ebSDaniel Henrique Barboza } 1735*73e1d8ebSDaniel Henrique Barboza 1736246d76ebSDaniel Henrique Barboza if (!local_err) { 1737304a0fcbSDaniel Henrique Barboza return; 1738304a0fcbSDaniel Henrique Barboza } 1739304a0fcbSDaniel Henrique Barboza 1740246d76ebSDaniel Henrique Barboza error_free(local_err); 174111d0f125SLuiz Capitulino 1742*73e1d8ebSDaniel Henrique Barboza if (linux_sys_state_supports_mode(mode, &local_err)) { 1743*73e1d8ebSDaniel Henrique Barboza mode_supported = true; 17448b020b5eSDaniel Henrique Barboza linux_sys_state_suspend(mode, &local_err); 1745*73e1d8ebSDaniel Henrique Barboza } 1746*73e1d8ebSDaniel Henrique Barboza 1747*73e1d8ebSDaniel Henrique Barboza if (!mode_supported) { 1748*73e1d8ebSDaniel Henrique Barboza error_setg(errp, 1749*73e1d8ebSDaniel Henrique Barboza "the requested suspend mode is not supported by the guest"); 1750*73e1d8ebSDaniel Henrique Barboza } else if (local_err) { 175177dbc81bSMarkus Armbruster error_propagate(errp, local_err); 17527b376087SLuiz Capitulino } 175311d0f125SLuiz Capitulino } 175411d0f125SLuiz Capitulino 175577dbc81bSMarkus Armbruster void qmp_guest_suspend_disk(Error **errp) 175611d0f125SLuiz Capitulino { 1757304a0fcbSDaniel Henrique Barboza guest_suspend(SUSPEND_MODE_DISK, errp); 175811d0f125SLuiz Capitulino } 175911d0f125SLuiz Capitulino 176077dbc81bSMarkus Armbruster void qmp_guest_suspend_ram(Error **errp) 1761fbf42210SLuiz Capitulino { 1762304a0fcbSDaniel Henrique Barboza guest_suspend(SUSPEND_MODE_RAM, errp); 1763fbf42210SLuiz Capitulino } 1764fbf42210SLuiz Capitulino 176577dbc81bSMarkus Armbruster void qmp_guest_suspend_hybrid(Error **errp) 176695f4f404SLuiz Capitulino { 1767304a0fcbSDaniel Henrique Barboza guest_suspend(SUSPEND_MODE_HYBRID, errp); 176895f4f404SLuiz Capitulino } 176995f4f404SLuiz Capitulino 17703424fc9fSMichal Privoznik static GuestNetworkInterfaceList * 17713424fc9fSMichal Privoznik guest_find_interface(GuestNetworkInterfaceList *head, 17723424fc9fSMichal Privoznik const char *name) 17733424fc9fSMichal Privoznik { 17743424fc9fSMichal Privoznik for (; head; head = head->next) { 17753424fc9fSMichal Privoznik if (strcmp(head->value->name, name) == 0) { 17763424fc9fSMichal Privoznik break; 17773424fc9fSMichal Privoznik } 17783424fc9fSMichal Privoznik } 17793424fc9fSMichal Privoznik 17803424fc9fSMichal Privoznik return head; 17813424fc9fSMichal Privoznik } 17823424fc9fSMichal Privoznik 178353f9fcb2SZhiPeng Lu static int guest_get_network_stats(const char *name, 178453f9fcb2SZhiPeng Lu GuestNetworkInterfaceStat *stats) 178553f9fcb2SZhiPeng Lu { 178653f9fcb2SZhiPeng Lu int name_len; 178753f9fcb2SZhiPeng Lu char const *devinfo = "/proc/net/dev"; 178853f9fcb2SZhiPeng Lu FILE *fp; 178953f9fcb2SZhiPeng Lu char *line = NULL, *colon; 179053f9fcb2SZhiPeng Lu size_t n = 0; 179153f9fcb2SZhiPeng Lu fp = fopen(devinfo, "r"); 179253f9fcb2SZhiPeng Lu if (!fp) { 179353f9fcb2SZhiPeng Lu return -1; 179453f9fcb2SZhiPeng Lu } 179553f9fcb2SZhiPeng Lu name_len = strlen(name); 179653f9fcb2SZhiPeng Lu while (getline(&line, &n, fp) != -1) { 179753f9fcb2SZhiPeng Lu long long dummy; 179853f9fcb2SZhiPeng Lu long long rx_bytes; 179953f9fcb2SZhiPeng Lu long long rx_packets; 180053f9fcb2SZhiPeng Lu long long rx_errs; 180153f9fcb2SZhiPeng Lu long long rx_dropped; 180253f9fcb2SZhiPeng Lu long long tx_bytes; 180353f9fcb2SZhiPeng Lu long long tx_packets; 180453f9fcb2SZhiPeng Lu long long tx_errs; 180553f9fcb2SZhiPeng Lu long long tx_dropped; 180653f9fcb2SZhiPeng Lu char *trim_line; 180753f9fcb2SZhiPeng Lu trim_line = g_strchug(line); 180853f9fcb2SZhiPeng Lu if (trim_line[0] == '\0') { 180953f9fcb2SZhiPeng Lu continue; 181053f9fcb2SZhiPeng Lu } 181153f9fcb2SZhiPeng Lu colon = strchr(trim_line, ':'); 181253f9fcb2SZhiPeng Lu if (!colon) { 181353f9fcb2SZhiPeng Lu continue; 181453f9fcb2SZhiPeng Lu } 181553f9fcb2SZhiPeng Lu if (colon - name_len == trim_line && 181653f9fcb2SZhiPeng Lu strncmp(trim_line, name, name_len) == 0) { 181753f9fcb2SZhiPeng Lu if (sscanf(colon + 1, 181853f9fcb2SZhiPeng Lu "%lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld", 181953f9fcb2SZhiPeng Lu &rx_bytes, &rx_packets, &rx_errs, &rx_dropped, 182053f9fcb2SZhiPeng Lu &dummy, &dummy, &dummy, &dummy, 182153f9fcb2SZhiPeng Lu &tx_bytes, &tx_packets, &tx_errs, &tx_dropped, 182253f9fcb2SZhiPeng Lu &dummy, &dummy, &dummy, &dummy) != 16) { 182353f9fcb2SZhiPeng Lu continue; 182453f9fcb2SZhiPeng Lu } 182553f9fcb2SZhiPeng Lu stats->rx_bytes = rx_bytes; 182653f9fcb2SZhiPeng Lu stats->rx_packets = rx_packets; 182753f9fcb2SZhiPeng Lu stats->rx_errs = rx_errs; 182853f9fcb2SZhiPeng Lu stats->rx_dropped = rx_dropped; 182953f9fcb2SZhiPeng Lu stats->tx_bytes = tx_bytes; 183053f9fcb2SZhiPeng Lu stats->tx_packets = tx_packets; 183153f9fcb2SZhiPeng Lu stats->tx_errs = tx_errs; 183253f9fcb2SZhiPeng Lu stats->tx_dropped = tx_dropped; 183353f9fcb2SZhiPeng Lu fclose(fp); 183453f9fcb2SZhiPeng Lu g_free(line); 183553f9fcb2SZhiPeng Lu return 0; 183653f9fcb2SZhiPeng Lu } 183753f9fcb2SZhiPeng Lu } 183853f9fcb2SZhiPeng Lu fclose(fp); 183953f9fcb2SZhiPeng Lu g_free(line); 184053f9fcb2SZhiPeng Lu g_debug("/proc/net/dev: Interface '%s' not found", name); 184153f9fcb2SZhiPeng Lu return -1; 184253f9fcb2SZhiPeng Lu } 184353f9fcb2SZhiPeng Lu 18443424fc9fSMichal Privoznik /* 18453424fc9fSMichal Privoznik * Build information about guest interfaces 18463424fc9fSMichal Privoznik */ 18473424fc9fSMichal Privoznik GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp) 18483424fc9fSMichal Privoznik { 18493424fc9fSMichal Privoznik GuestNetworkInterfaceList *head = NULL, *cur_item = NULL; 18503424fc9fSMichal Privoznik struct ifaddrs *ifap, *ifa; 18513424fc9fSMichal Privoznik 18523424fc9fSMichal Privoznik if (getifaddrs(&ifap) < 0) { 1853878a0ae0SLuiz Capitulino error_setg_errno(errp, errno, "getifaddrs failed"); 18543424fc9fSMichal Privoznik goto error; 18553424fc9fSMichal Privoznik } 18563424fc9fSMichal Privoznik 18573424fc9fSMichal Privoznik for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 18583424fc9fSMichal Privoznik GuestNetworkInterfaceList *info; 18593424fc9fSMichal Privoznik GuestIpAddressList **address_list = NULL, *address_item = NULL; 186053f9fcb2SZhiPeng Lu GuestNetworkInterfaceStat *interface_stat = NULL; 18613424fc9fSMichal Privoznik char addr4[INET_ADDRSTRLEN]; 18623424fc9fSMichal Privoznik char addr6[INET6_ADDRSTRLEN]; 18633424fc9fSMichal Privoznik int sock; 18643424fc9fSMichal Privoznik struct ifreq ifr; 18653424fc9fSMichal Privoznik unsigned char *mac_addr; 18663424fc9fSMichal Privoznik void *p; 18673424fc9fSMichal Privoznik 18683424fc9fSMichal Privoznik g_debug("Processing %s interface", ifa->ifa_name); 18693424fc9fSMichal Privoznik 18703424fc9fSMichal Privoznik info = guest_find_interface(head, ifa->ifa_name); 18713424fc9fSMichal Privoznik 18723424fc9fSMichal Privoznik if (!info) { 18733424fc9fSMichal Privoznik info = g_malloc0(sizeof(*info)); 18743424fc9fSMichal Privoznik info->value = g_malloc0(sizeof(*info->value)); 18753424fc9fSMichal Privoznik info->value->name = g_strdup(ifa->ifa_name); 18763424fc9fSMichal Privoznik 18773424fc9fSMichal Privoznik if (!cur_item) { 18783424fc9fSMichal Privoznik head = cur_item = info; 18793424fc9fSMichal Privoznik } else { 18803424fc9fSMichal Privoznik cur_item->next = info; 18813424fc9fSMichal Privoznik cur_item = info; 18823424fc9fSMichal Privoznik } 18833424fc9fSMichal Privoznik } 18843424fc9fSMichal Privoznik 18853424fc9fSMichal Privoznik if (!info->value->has_hardware_address && 18863424fc9fSMichal Privoznik ifa->ifa_flags & SIOCGIFHWADDR) { 18873424fc9fSMichal Privoznik /* we haven't obtained HW address yet */ 18883424fc9fSMichal Privoznik sock = socket(PF_INET, SOCK_STREAM, 0); 18893424fc9fSMichal Privoznik if (sock == -1) { 1890878a0ae0SLuiz Capitulino error_setg_errno(errp, errno, "failed to create socket"); 18913424fc9fSMichal Privoznik goto error; 18923424fc9fSMichal Privoznik } 18933424fc9fSMichal Privoznik 18943424fc9fSMichal Privoznik memset(&ifr, 0, sizeof(ifr)); 18951ab516edSJim Meyering pstrcpy(ifr.ifr_name, IF_NAMESIZE, info->value->name); 18963424fc9fSMichal Privoznik if (ioctl(sock, SIOCGIFHWADDR, &ifr) == -1) { 1897878a0ae0SLuiz Capitulino error_setg_errno(errp, errno, 1898878a0ae0SLuiz Capitulino "failed to get MAC address of %s", 1899878a0ae0SLuiz Capitulino ifa->ifa_name); 190010a2158fSMarkus Armbruster close(sock); 19013424fc9fSMichal Privoznik goto error; 19023424fc9fSMichal Privoznik } 19033424fc9fSMichal Privoznik 190410a2158fSMarkus Armbruster close(sock); 19053424fc9fSMichal Privoznik mac_addr = (unsigned char *) &ifr.ifr_hwaddr.sa_data; 19063424fc9fSMichal Privoznik 1907e4ada482SStefan Weil info->value->hardware_address = 1908e4ada482SStefan Weil g_strdup_printf("%02x:%02x:%02x:%02x:%02x:%02x", 19093424fc9fSMichal Privoznik (int) mac_addr[0], (int) mac_addr[1], 19103424fc9fSMichal Privoznik (int) mac_addr[2], (int) mac_addr[3], 1911e4ada482SStefan Weil (int) mac_addr[4], (int) mac_addr[5]); 19123424fc9fSMichal Privoznik 19133424fc9fSMichal Privoznik info->value->has_hardware_address = true; 19143424fc9fSMichal Privoznik } 19153424fc9fSMichal Privoznik 19163424fc9fSMichal Privoznik if (ifa->ifa_addr && 19173424fc9fSMichal Privoznik ifa->ifa_addr->sa_family == AF_INET) { 19183424fc9fSMichal Privoznik /* interface with IPv4 address */ 19193424fc9fSMichal Privoznik p = &((struct sockaddr_in *)ifa->ifa_addr)->sin_addr; 19203424fc9fSMichal Privoznik if (!inet_ntop(AF_INET, p, addr4, sizeof(addr4))) { 1921878a0ae0SLuiz Capitulino error_setg_errno(errp, errno, "inet_ntop failed"); 19223424fc9fSMichal Privoznik goto error; 19233424fc9fSMichal Privoznik } 19243424fc9fSMichal Privoznik 192510a2158fSMarkus Armbruster address_item = g_malloc0(sizeof(*address_item)); 192610a2158fSMarkus Armbruster address_item->value = g_malloc0(sizeof(*address_item->value)); 19273424fc9fSMichal Privoznik address_item->value->ip_address = g_strdup(addr4); 19283424fc9fSMichal Privoznik address_item->value->ip_address_type = GUEST_IP_ADDRESS_TYPE_IPV4; 19293424fc9fSMichal Privoznik 19303424fc9fSMichal Privoznik if (ifa->ifa_netmask) { 19313424fc9fSMichal Privoznik /* Count the number of set bits in netmask. 19323424fc9fSMichal Privoznik * This is safe as '1' and '0' cannot be shuffled in netmask. */ 19333424fc9fSMichal Privoznik p = &((struct sockaddr_in *)ifa->ifa_netmask)->sin_addr; 19343424fc9fSMichal Privoznik address_item->value->prefix = ctpop32(((uint32_t *) p)[0]); 19353424fc9fSMichal Privoznik } 19363424fc9fSMichal Privoznik } else if (ifa->ifa_addr && 19373424fc9fSMichal Privoznik ifa->ifa_addr->sa_family == AF_INET6) { 19383424fc9fSMichal Privoznik /* interface with IPv6 address */ 19393424fc9fSMichal Privoznik p = &((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_addr; 19403424fc9fSMichal Privoznik if (!inet_ntop(AF_INET6, p, addr6, sizeof(addr6))) { 1941878a0ae0SLuiz Capitulino error_setg_errno(errp, errno, "inet_ntop failed"); 19423424fc9fSMichal Privoznik goto error; 19433424fc9fSMichal Privoznik } 19443424fc9fSMichal Privoznik 194510a2158fSMarkus Armbruster address_item = g_malloc0(sizeof(*address_item)); 194610a2158fSMarkus Armbruster address_item->value = g_malloc0(sizeof(*address_item->value)); 19473424fc9fSMichal Privoznik address_item->value->ip_address = g_strdup(addr6); 19483424fc9fSMichal Privoznik address_item->value->ip_address_type = GUEST_IP_ADDRESS_TYPE_IPV6; 19493424fc9fSMichal Privoznik 19503424fc9fSMichal Privoznik if (ifa->ifa_netmask) { 19513424fc9fSMichal Privoznik /* Count the number of set bits in netmask. 19523424fc9fSMichal Privoznik * This is safe as '1' and '0' cannot be shuffled in netmask. */ 19533424fc9fSMichal Privoznik p = &((struct sockaddr_in6 *)ifa->ifa_netmask)->sin6_addr; 19543424fc9fSMichal Privoznik address_item->value->prefix = 19553424fc9fSMichal Privoznik ctpop32(((uint32_t *) p)[0]) + 19563424fc9fSMichal Privoznik ctpop32(((uint32_t *) p)[1]) + 19573424fc9fSMichal Privoznik ctpop32(((uint32_t *) p)[2]) + 19583424fc9fSMichal Privoznik ctpop32(((uint32_t *) p)[3]); 19593424fc9fSMichal Privoznik } 19603424fc9fSMichal Privoznik } 19613424fc9fSMichal Privoznik 19623424fc9fSMichal Privoznik if (!address_item) { 19633424fc9fSMichal Privoznik continue; 19643424fc9fSMichal Privoznik } 19653424fc9fSMichal Privoznik 19663424fc9fSMichal Privoznik address_list = &info->value->ip_addresses; 19673424fc9fSMichal Privoznik 19683424fc9fSMichal Privoznik while (*address_list && (*address_list)->next) { 19693424fc9fSMichal Privoznik address_list = &(*address_list)->next; 19703424fc9fSMichal Privoznik } 19713424fc9fSMichal Privoznik 19723424fc9fSMichal Privoznik if (!*address_list) { 19733424fc9fSMichal Privoznik *address_list = address_item; 19743424fc9fSMichal Privoznik } else { 19753424fc9fSMichal Privoznik (*address_list)->next = address_item; 19763424fc9fSMichal Privoznik } 19773424fc9fSMichal Privoznik 19783424fc9fSMichal Privoznik info->value->has_ip_addresses = true; 19793424fc9fSMichal Privoznik 198053f9fcb2SZhiPeng Lu if (!info->value->has_statistics) { 198153f9fcb2SZhiPeng Lu interface_stat = g_malloc0(sizeof(*interface_stat)); 198253f9fcb2SZhiPeng Lu if (guest_get_network_stats(info->value->name, 198353f9fcb2SZhiPeng Lu interface_stat) == -1) { 198453f9fcb2SZhiPeng Lu info->value->has_statistics = false; 198553f9fcb2SZhiPeng Lu g_free(interface_stat); 198653f9fcb2SZhiPeng Lu } else { 198753f9fcb2SZhiPeng Lu info->value->statistics = interface_stat; 198853f9fcb2SZhiPeng Lu info->value->has_statistics = true; 198953f9fcb2SZhiPeng Lu } 199053f9fcb2SZhiPeng Lu } 19913424fc9fSMichal Privoznik } 19923424fc9fSMichal Privoznik 19933424fc9fSMichal Privoznik freeifaddrs(ifap); 19943424fc9fSMichal Privoznik return head; 19953424fc9fSMichal Privoznik 19963424fc9fSMichal Privoznik error: 19973424fc9fSMichal Privoznik freeifaddrs(ifap); 19983424fc9fSMichal Privoznik qapi_free_GuestNetworkInterfaceList(head); 19993424fc9fSMichal Privoznik return NULL; 20003424fc9fSMichal Privoznik } 20013424fc9fSMichal Privoznik 200277dbc81bSMarkus Armbruster #define SYSCONF_EXACT(name, errp) sysconf_exact((name), #name, (errp)) 2003d2baff62SLaszlo Ersek 200477dbc81bSMarkus Armbruster static long sysconf_exact(int name, const char *name_str, Error **errp) 2005d2baff62SLaszlo Ersek { 2006d2baff62SLaszlo Ersek long ret; 2007d2baff62SLaszlo Ersek 2008d2baff62SLaszlo Ersek errno = 0; 2009d2baff62SLaszlo Ersek ret = sysconf(name); 2010d2baff62SLaszlo Ersek if (ret == -1) { 2011d2baff62SLaszlo Ersek if (errno == 0) { 201277dbc81bSMarkus Armbruster error_setg(errp, "sysconf(%s): value indefinite", name_str); 2013d2baff62SLaszlo Ersek } else { 201477dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "sysconf(%s)", name_str); 2015d2baff62SLaszlo Ersek } 2016d2baff62SLaszlo Ersek } 2017d2baff62SLaszlo Ersek return ret; 2018d2baff62SLaszlo Ersek } 2019d2baff62SLaszlo Ersek 2020d2baff62SLaszlo Ersek /* Transfer online/offline status between @vcpu and the guest system. 2021d2baff62SLaszlo Ersek * 2022d2baff62SLaszlo Ersek * On input either @errp or *@errp must be NULL. 2023d2baff62SLaszlo Ersek * 2024d2baff62SLaszlo Ersek * In system-to-@vcpu direction, the following @vcpu fields are accessed: 2025d2baff62SLaszlo Ersek * - R: vcpu->logical_id 2026d2baff62SLaszlo Ersek * - W: vcpu->online 2027d2baff62SLaszlo Ersek * - W: vcpu->can_offline 2028d2baff62SLaszlo Ersek * 2029d2baff62SLaszlo Ersek * In @vcpu-to-system direction, the following @vcpu fields are accessed: 2030d2baff62SLaszlo Ersek * - R: vcpu->logical_id 2031d2baff62SLaszlo Ersek * - R: vcpu->online 2032d2baff62SLaszlo Ersek * 2033d2baff62SLaszlo Ersek * Written members remain unmodified on error. 2034d2baff62SLaszlo Ersek */ 2035d2baff62SLaszlo Ersek static void transfer_vcpu(GuestLogicalProcessor *vcpu, bool sys2vcpu, 2036d2baff62SLaszlo Ersek Error **errp) 2037d2baff62SLaszlo Ersek { 2038d2baff62SLaszlo Ersek char *dirpath; 2039d2baff62SLaszlo Ersek int dirfd; 2040d2baff62SLaszlo Ersek 2041d2baff62SLaszlo Ersek dirpath = g_strdup_printf("/sys/devices/system/cpu/cpu%" PRId64 "/", 2042d2baff62SLaszlo Ersek vcpu->logical_id); 2043d2baff62SLaszlo Ersek dirfd = open(dirpath, O_RDONLY | O_DIRECTORY); 2044d2baff62SLaszlo Ersek if (dirfd == -1) { 2045d2baff62SLaszlo Ersek error_setg_errno(errp, errno, "open(\"%s\")", dirpath); 2046d2baff62SLaszlo Ersek } else { 2047d2baff62SLaszlo Ersek static const char fn[] = "online"; 2048d2baff62SLaszlo Ersek int fd; 2049d2baff62SLaszlo Ersek int res; 2050d2baff62SLaszlo Ersek 2051d2baff62SLaszlo Ersek fd = openat(dirfd, fn, sys2vcpu ? O_RDONLY : O_RDWR); 2052d2baff62SLaszlo Ersek if (fd == -1) { 2053d2baff62SLaszlo Ersek if (errno != ENOENT) { 2054d2baff62SLaszlo Ersek error_setg_errno(errp, errno, "open(\"%s/%s\")", dirpath, fn); 2055d2baff62SLaszlo Ersek } else if (sys2vcpu) { 2056d2baff62SLaszlo Ersek vcpu->online = true; 2057d2baff62SLaszlo Ersek vcpu->can_offline = false; 2058d2baff62SLaszlo Ersek } else if (!vcpu->online) { 2059d2baff62SLaszlo Ersek error_setg(errp, "logical processor #%" PRId64 " can't be " 2060d2baff62SLaszlo Ersek "offlined", vcpu->logical_id); 2061d2baff62SLaszlo Ersek } /* otherwise pretend successful re-onlining */ 2062d2baff62SLaszlo Ersek } else { 2063d2baff62SLaszlo Ersek unsigned char status; 2064d2baff62SLaszlo Ersek 2065d2baff62SLaszlo Ersek res = pread(fd, &status, 1, 0); 2066d2baff62SLaszlo Ersek if (res == -1) { 2067d2baff62SLaszlo Ersek error_setg_errno(errp, errno, "pread(\"%s/%s\")", dirpath, fn); 2068d2baff62SLaszlo Ersek } else if (res == 0) { 2069d2baff62SLaszlo Ersek error_setg(errp, "pread(\"%s/%s\"): unexpected EOF", dirpath, 2070d2baff62SLaszlo Ersek fn); 2071d2baff62SLaszlo Ersek } else if (sys2vcpu) { 2072d2baff62SLaszlo Ersek vcpu->online = (status != '0'); 2073d2baff62SLaszlo Ersek vcpu->can_offline = true; 2074d2baff62SLaszlo Ersek } else if (vcpu->online != (status != '0')) { 2075d2baff62SLaszlo Ersek status = '0' + vcpu->online; 2076d2baff62SLaszlo Ersek if (pwrite(fd, &status, 1, 0) == -1) { 2077d2baff62SLaszlo Ersek error_setg_errno(errp, errno, "pwrite(\"%s/%s\")", dirpath, 2078d2baff62SLaszlo Ersek fn); 2079d2baff62SLaszlo Ersek } 2080d2baff62SLaszlo Ersek } /* otherwise pretend successful re-(on|off)-lining */ 2081d2baff62SLaszlo Ersek 2082d2baff62SLaszlo Ersek res = close(fd); 2083d2baff62SLaszlo Ersek g_assert(res == 0); 2084d2baff62SLaszlo Ersek } 2085d2baff62SLaszlo Ersek 2086d2baff62SLaszlo Ersek res = close(dirfd); 2087d2baff62SLaszlo Ersek g_assert(res == 0); 2088d2baff62SLaszlo Ersek } 2089d2baff62SLaszlo Ersek 2090d2baff62SLaszlo Ersek g_free(dirpath); 2091d2baff62SLaszlo Ersek } 2092d2baff62SLaszlo Ersek 2093d2baff62SLaszlo Ersek GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp) 2094d2baff62SLaszlo Ersek { 2095d2baff62SLaszlo Ersek int64_t current; 2096d2baff62SLaszlo Ersek GuestLogicalProcessorList *head, **link; 2097d2baff62SLaszlo Ersek long sc_max; 2098d2baff62SLaszlo Ersek Error *local_err = NULL; 2099d2baff62SLaszlo Ersek 2100d2baff62SLaszlo Ersek current = 0; 2101d2baff62SLaszlo Ersek head = NULL; 2102d2baff62SLaszlo Ersek link = &head; 2103d2baff62SLaszlo Ersek sc_max = SYSCONF_EXACT(_SC_NPROCESSORS_CONF, &local_err); 2104d2baff62SLaszlo Ersek 2105d2baff62SLaszlo Ersek while (local_err == NULL && current < sc_max) { 2106d2baff62SLaszlo Ersek GuestLogicalProcessor *vcpu; 2107d2baff62SLaszlo Ersek GuestLogicalProcessorList *entry; 2108d2baff62SLaszlo Ersek 2109d2baff62SLaszlo Ersek vcpu = g_malloc0(sizeof *vcpu); 2110d2baff62SLaszlo Ersek vcpu->logical_id = current++; 2111d2baff62SLaszlo Ersek vcpu->has_can_offline = true; /* lolspeak ftw */ 2112d2baff62SLaszlo Ersek transfer_vcpu(vcpu, true, &local_err); 2113d2baff62SLaszlo Ersek 2114d2baff62SLaszlo Ersek entry = g_malloc0(sizeof *entry); 2115d2baff62SLaszlo Ersek entry->value = vcpu; 2116d2baff62SLaszlo Ersek 2117d2baff62SLaszlo Ersek *link = entry; 2118d2baff62SLaszlo Ersek link = &entry->next; 2119d2baff62SLaszlo Ersek } 2120d2baff62SLaszlo Ersek 2121d2baff62SLaszlo Ersek if (local_err == NULL) { 2122d2baff62SLaszlo Ersek /* there's no guest with zero VCPUs */ 2123d2baff62SLaszlo Ersek g_assert(head != NULL); 2124d2baff62SLaszlo Ersek return head; 2125d2baff62SLaszlo Ersek } 2126d2baff62SLaszlo Ersek 2127d2baff62SLaszlo Ersek qapi_free_GuestLogicalProcessorList(head); 2128d2baff62SLaszlo Ersek error_propagate(errp, local_err); 2129d2baff62SLaszlo Ersek return NULL; 2130d2baff62SLaszlo Ersek } 2131d2baff62SLaszlo Ersek 2132cbb65fc2SLaszlo Ersek int64_t qmp_guest_set_vcpus(GuestLogicalProcessorList *vcpus, Error **errp) 2133cbb65fc2SLaszlo Ersek { 2134cbb65fc2SLaszlo Ersek int64_t processed; 2135cbb65fc2SLaszlo Ersek Error *local_err = NULL; 2136cbb65fc2SLaszlo Ersek 2137cbb65fc2SLaszlo Ersek processed = 0; 2138cbb65fc2SLaszlo Ersek while (vcpus != NULL) { 2139cbb65fc2SLaszlo Ersek transfer_vcpu(vcpus->value, false, &local_err); 2140cbb65fc2SLaszlo Ersek if (local_err != NULL) { 2141cbb65fc2SLaszlo Ersek break; 2142cbb65fc2SLaszlo Ersek } 2143cbb65fc2SLaszlo Ersek ++processed; 2144cbb65fc2SLaszlo Ersek vcpus = vcpus->next; 2145cbb65fc2SLaszlo Ersek } 2146cbb65fc2SLaszlo Ersek 2147cbb65fc2SLaszlo Ersek if (local_err != NULL) { 2148cbb65fc2SLaszlo Ersek if (processed == 0) { 2149cbb65fc2SLaszlo Ersek error_propagate(errp, local_err); 2150cbb65fc2SLaszlo Ersek } else { 2151cbb65fc2SLaszlo Ersek error_free(local_err); 2152cbb65fc2SLaszlo Ersek } 2153cbb65fc2SLaszlo Ersek } 2154cbb65fc2SLaszlo Ersek 2155cbb65fc2SLaszlo Ersek return processed; 2156cbb65fc2SLaszlo Ersek } 2157cbb65fc2SLaszlo Ersek 2158215a2771SDaniel P. Berrange void qmp_guest_set_user_password(const char *username, 2159215a2771SDaniel P. Berrange const char *password, 2160215a2771SDaniel P. Berrange bool crypted, 2161215a2771SDaniel P. Berrange Error **errp) 2162215a2771SDaniel P. Berrange { 2163215a2771SDaniel P. Berrange Error *local_err = NULL; 2164215a2771SDaniel P. Berrange char *passwd_path = NULL; 2165215a2771SDaniel P. Berrange pid_t pid; 2166215a2771SDaniel P. Berrange int status; 2167215a2771SDaniel P. Berrange int datafd[2] = { -1, -1 }; 2168215a2771SDaniel P. Berrange char *rawpasswddata = NULL; 2169215a2771SDaniel P. Berrange size_t rawpasswdlen; 2170215a2771SDaniel P. Berrange char *chpasswddata = NULL; 2171215a2771SDaniel P. Berrange size_t chpasswdlen; 2172215a2771SDaniel P. Berrange 2173920639caSDaniel P. Berrange rawpasswddata = (char *)qbase64_decode(password, -1, &rawpasswdlen, errp); 2174920639caSDaniel P. Berrange if (!rawpasswddata) { 2175920639caSDaniel P. Berrange return; 2176920639caSDaniel P. Berrange } 2177215a2771SDaniel P. Berrange rawpasswddata = g_renew(char, rawpasswddata, rawpasswdlen + 1); 2178215a2771SDaniel P. Berrange rawpasswddata[rawpasswdlen] = '\0'; 2179215a2771SDaniel P. Berrange 2180215a2771SDaniel P. Berrange if (strchr(rawpasswddata, '\n')) { 2181215a2771SDaniel P. Berrange error_setg(errp, "forbidden characters in raw password"); 2182215a2771SDaniel P. Berrange goto out; 2183215a2771SDaniel P. Berrange } 2184215a2771SDaniel P. Berrange 2185215a2771SDaniel P. Berrange if (strchr(username, '\n') || 2186215a2771SDaniel P. Berrange strchr(username, ':')) { 2187215a2771SDaniel P. Berrange error_setg(errp, "forbidden characters in username"); 2188215a2771SDaniel P. Berrange goto out; 2189215a2771SDaniel P. Berrange } 2190215a2771SDaniel P. Berrange 2191215a2771SDaniel P. Berrange chpasswddata = g_strdup_printf("%s:%s\n", username, rawpasswddata); 2192215a2771SDaniel P. Berrange chpasswdlen = strlen(chpasswddata); 2193215a2771SDaniel P. Berrange 2194215a2771SDaniel P. Berrange passwd_path = g_find_program_in_path("chpasswd"); 2195215a2771SDaniel P. Berrange 2196215a2771SDaniel P. Berrange if (!passwd_path) { 2197215a2771SDaniel P. Berrange error_setg(errp, "cannot find 'passwd' program in PATH"); 2198215a2771SDaniel P. Berrange goto out; 2199215a2771SDaniel P. Berrange } 2200215a2771SDaniel P. Berrange 2201215a2771SDaniel P. Berrange if (pipe(datafd) < 0) { 2202215a2771SDaniel P. Berrange error_setg(errp, "cannot create pipe FDs"); 2203215a2771SDaniel P. Berrange goto out; 2204215a2771SDaniel P. Berrange } 2205215a2771SDaniel P. Berrange 2206215a2771SDaniel P. Berrange pid = fork(); 2207215a2771SDaniel P. Berrange if (pid == 0) { 2208215a2771SDaniel P. Berrange close(datafd[1]); 2209215a2771SDaniel P. Berrange /* child */ 2210215a2771SDaniel P. Berrange setsid(); 2211215a2771SDaniel P. Berrange dup2(datafd[0], 0); 2212215a2771SDaniel P. Berrange reopen_fd_to_null(1); 2213215a2771SDaniel P. Berrange reopen_fd_to_null(2); 2214215a2771SDaniel P. Berrange 2215215a2771SDaniel P. Berrange if (crypted) { 2216215a2771SDaniel P. Berrange execle(passwd_path, "chpasswd", "-e", NULL, environ); 2217215a2771SDaniel P. Berrange } else { 2218215a2771SDaniel P. Berrange execle(passwd_path, "chpasswd", NULL, environ); 2219215a2771SDaniel P. Berrange } 2220215a2771SDaniel P. Berrange _exit(EXIT_FAILURE); 2221215a2771SDaniel P. Berrange } else if (pid < 0) { 2222215a2771SDaniel P. Berrange error_setg_errno(errp, errno, "failed to create child process"); 2223215a2771SDaniel P. Berrange goto out; 2224215a2771SDaniel P. Berrange } 2225215a2771SDaniel P. Berrange close(datafd[0]); 2226215a2771SDaniel P. Berrange datafd[0] = -1; 2227215a2771SDaniel P. Berrange 2228215a2771SDaniel P. Berrange if (qemu_write_full(datafd[1], chpasswddata, chpasswdlen) != chpasswdlen) { 2229215a2771SDaniel P. Berrange error_setg_errno(errp, errno, "cannot write new account password"); 2230215a2771SDaniel P. Berrange goto out; 2231215a2771SDaniel P. Berrange } 2232215a2771SDaniel P. Berrange close(datafd[1]); 2233215a2771SDaniel P. Berrange datafd[1] = -1; 2234215a2771SDaniel P. Berrange 2235215a2771SDaniel P. Berrange ga_wait_child(pid, &status, &local_err); 2236215a2771SDaniel P. Berrange if (local_err) { 2237215a2771SDaniel P. Berrange error_propagate(errp, local_err); 2238215a2771SDaniel P. Berrange goto out; 2239215a2771SDaniel P. Berrange } 2240215a2771SDaniel P. Berrange 2241215a2771SDaniel P. Berrange if (!WIFEXITED(status)) { 2242215a2771SDaniel P. Berrange error_setg(errp, "child process has terminated abnormally"); 2243215a2771SDaniel P. Berrange goto out; 2244215a2771SDaniel P. Berrange } 2245215a2771SDaniel P. Berrange 2246215a2771SDaniel P. Berrange if (WEXITSTATUS(status)) { 2247215a2771SDaniel P. Berrange error_setg(errp, "child process has failed to set user password"); 2248215a2771SDaniel P. Berrange goto out; 2249215a2771SDaniel P. Berrange } 2250215a2771SDaniel P. Berrange 2251215a2771SDaniel P. Berrange out: 2252215a2771SDaniel P. Berrange g_free(chpasswddata); 2253215a2771SDaniel P. Berrange g_free(rawpasswddata); 2254215a2771SDaniel P. Berrange g_free(passwd_path); 2255215a2771SDaniel P. Berrange if (datafd[0] != -1) { 2256215a2771SDaniel P. Berrange close(datafd[0]); 2257215a2771SDaniel P. Berrange } 2258215a2771SDaniel P. Berrange if (datafd[1] != -1) { 2259215a2771SDaniel P. Berrange close(datafd[1]); 2260215a2771SDaniel P. Berrange } 2261215a2771SDaniel P. Berrange } 2262215a2771SDaniel P. Berrange 2263bd240fcaSzhanghailiang static void ga_read_sysfs_file(int dirfd, const char *pathname, char *buf, 2264bd240fcaSzhanghailiang int size, Error **errp) 2265bd240fcaSzhanghailiang { 2266bd240fcaSzhanghailiang int fd; 2267bd240fcaSzhanghailiang int res; 2268bd240fcaSzhanghailiang 2269bd240fcaSzhanghailiang errno = 0; 2270bd240fcaSzhanghailiang fd = openat(dirfd, pathname, O_RDONLY); 2271bd240fcaSzhanghailiang if (fd == -1) { 2272bd240fcaSzhanghailiang error_setg_errno(errp, errno, "open sysfs file \"%s\"", pathname); 2273bd240fcaSzhanghailiang return; 2274bd240fcaSzhanghailiang } 2275bd240fcaSzhanghailiang 2276bd240fcaSzhanghailiang res = pread(fd, buf, size, 0); 2277bd240fcaSzhanghailiang if (res == -1) { 2278bd240fcaSzhanghailiang error_setg_errno(errp, errno, "pread sysfs file \"%s\"", pathname); 2279bd240fcaSzhanghailiang } else if (res == 0) { 2280bd240fcaSzhanghailiang error_setg(errp, "pread sysfs file \"%s\": unexpected EOF", pathname); 2281bd240fcaSzhanghailiang } 2282bd240fcaSzhanghailiang close(fd); 2283bd240fcaSzhanghailiang } 2284bd240fcaSzhanghailiang 2285bd240fcaSzhanghailiang static void ga_write_sysfs_file(int dirfd, const char *pathname, 2286bd240fcaSzhanghailiang const char *buf, int size, Error **errp) 2287bd240fcaSzhanghailiang { 2288bd240fcaSzhanghailiang int fd; 2289bd240fcaSzhanghailiang 2290bd240fcaSzhanghailiang errno = 0; 2291bd240fcaSzhanghailiang fd = openat(dirfd, pathname, O_WRONLY); 2292bd240fcaSzhanghailiang if (fd == -1) { 2293bd240fcaSzhanghailiang error_setg_errno(errp, errno, "open sysfs file \"%s\"", pathname); 2294bd240fcaSzhanghailiang return; 2295bd240fcaSzhanghailiang } 2296bd240fcaSzhanghailiang 2297bd240fcaSzhanghailiang if (pwrite(fd, buf, size, 0) == -1) { 2298bd240fcaSzhanghailiang error_setg_errno(errp, errno, "pwrite sysfs file \"%s\"", pathname); 2299bd240fcaSzhanghailiang } 2300bd240fcaSzhanghailiang 2301bd240fcaSzhanghailiang close(fd); 2302bd240fcaSzhanghailiang } 2303bd240fcaSzhanghailiang 2304bd240fcaSzhanghailiang /* Transfer online/offline status between @mem_blk and the guest system. 2305bd240fcaSzhanghailiang * 2306bd240fcaSzhanghailiang * On input either @errp or *@errp must be NULL. 2307bd240fcaSzhanghailiang * 2308bd240fcaSzhanghailiang * In system-to-@mem_blk direction, the following @mem_blk fields are accessed: 2309bd240fcaSzhanghailiang * - R: mem_blk->phys_index 2310bd240fcaSzhanghailiang * - W: mem_blk->online 2311bd240fcaSzhanghailiang * - W: mem_blk->can_offline 2312bd240fcaSzhanghailiang * 2313bd240fcaSzhanghailiang * In @mem_blk-to-system direction, the following @mem_blk fields are accessed: 2314bd240fcaSzhanghailiang * - R: mem_blk->phys_index 2315bd240fcaSzhanghailiang * - R: mem_blk->online 2316bd240fcaSzhanghailiang *- R: mem_blk->can_offline 2317bd240fcaSzhanghailiang * Written members remain unmodified on error. 2318bd240fcaSzhanghailiang */ 2319bd240fcaSzhanghailiang static void transfer_memory_block(GuestMemoryBlock *mem_blk, bool sys2memblk, 2320bd240fcaSzhanghailiang GuestMemoryBlockResponse *result, 2321bd240fcaSzhanghailiang Error **errp) 2322bd240fcaSzhanghailiang { 2323bd240fcaSzhanghailiang char *dirpath; 2324bd240fcaSzhanghailiang int dirfd; 2325bd240fcaSzhanghailiang char *status; 2326bd240fcaSzhanghailiang Error *local_err = NULL; 2327bd240fcaSzhanghailiang 2328bd240fcaSzhanghailiang if (!sys2memblk) { 2329bd240fcaSzhanghailiang DIR *dp; 2330bd240fcaSzhanghailiang 2331bd240fcaSzhanghailiang if (!result) { 2332bd240fcaSzhanghailiang error_setg(errp, "Internal error, 'result' should not be NULL"); 2333bd240fcaSzhanghailiang return; 2334bd240fcaSzhanghailiang } 2335bd240fcaSzhanghailiang errno = 0; 2336bd240fcaSzhanghailiang dp = opendir("/sys/devices/system/memory/"); 2337bd240fcaSzhanghailiang /* if there is no 'memory' directory in sysfs, 2338bd240fcaSzhanghailiang * we think this VM does not support online/offline memory block, 2339bd240fcaSzhanghailiang * any other solution? 2340bd240fcaSzhanghailiang */ 23419879f5acSPhilippe Mathieu-Daudé if (!dp) { 23429879f5acSPhilippe Mathieu-Daudé if (errno == ENOENT) { 2343bd240fcaSzhanghailiang result->response = 2344bd240fcaSzhanghailiang GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_NOT_SUPPORTED; 23459879f5acSPhilippe Mathieu-Daudé } 2346bd240fcaSzhanghailiang goto out1; 2347bd240fcaSzhanghailiang } 2348bd240fcaSzhanghailiang closedir(dp); 2349bd240fcaSzhanghailiang } 2350bd240fcaSzhanghailiang 2351bd240fcaSzhanghailiang dirpath = g_strdup_printf("/sys/devices/system/memory/memory%" PRId64 "/", 2352bd240fcaSzhanghailiang mem_blk->phys_index); 2353bd240fcaSzhanghailiang dirfd = open(dirpath, O_RDONLY | O_DIRECTORY); 2354bd240fcaSzhanghailiang if (dirfd == -1) { 2355bd240fcaSzhanghailiang if (sys2memblk) { 2356bd240fcaSzhanghailiang error_setg_errno(errp, errno, "open(\"%s\")", dirpath); 2357bd240fcaSzhanghailiang } else { 2358bd240fcaSzhanghailiang if (errno == ENOENT) { 2359bd240fcaSzhanghailiang result->response = GUEST_MEMORY_BLOCK_RESPONSE_TYPE_NOT_FOUND; 2360bd240fcaSzhanghailiang } else { 2361bd240fcaSzhanghailiang result->response = 2362bd240fcaSzhanghailiang GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_FAILED; 2363bd240fcaSzhanghailiang } 2364bd240fcaSzhanghailiang } 2365bd240fcaSzhanghailiang g_free(dirpath); 2366bd240fcaSzhanghailiang goto out1; 2367bd240fcaSzhanghailiang } 2368bd240fcaSzhanghailiang g_free(dirpath); 2369bd240fcaSzhanghailiang 2370bd240fcaSzhanghailiang status = g_malloc0(10); 2371bd240fcaSzhanghailiang ga_read_sysfs_file(dirfd, "state", status, 10, &local_err); 2372bd240fcaSzhanghailiang if (local_err) { 2373bd240fcaSzhanghailiang /* treat with sysfs file that not exist in old kernel */ 2374bd240fcaSzhanghailiang if (errno == ENOENT) { 2375bd240fcaSzhanghailiang error_free(local_err); 2376bd240fcaSzhanghailiang if (sys2memblk) { 2377bd240fcaSzhanghailiang mem_blk->online = true; 2378bd240fcaSzhanghailiang mem_blk->can_offline = false; 2379bd240fcaSzhanghailiang } else if (!mem_blk->online) { 2380bd240fcaSzhanghailiang result->response = 2381bd240fcaSzhanghailiang GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_NOT_SUPPORTED; 2382bd240fcaSzhanghailiang } 2383bd240fcaSzhanghailiang } else { 2384bd240fcaSzhanghailiang if (sys2memblk) { 2385bd240fcaSzhanghailiang error_propagate(errp, local_err); 2386bd240fcaSzhanghailiang } else { 2387bd240fcaSzhanghailiang result->response = 2388bd240fcaSzhanghailiang GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_FAILED; 2389bd240fcaSzhanghailiang } 2390bd240fcaSzhanghailiang } 2391bd240fcaSzhanghailiang goto out2; 2392bd240fcaSzhanghailiang } 2393bd240fcaSzhanghailiang 2394bd240fcaSzhanghailiang if (sys2memblk) { 2395bd240fcaSzhanghailiang char removable = '0'; 2396bd240fcaSzhanghailiang 2397bd240fcaSzhanghailiang mem_blk->online = (strncmp(status, "online", 6) == 0); 2398bd240fcaSzhanghailiang 2399bd240fcaSzhanghailiang ga_read_sysfs_file(dirfd, "removable", &removable, 1, &local_err); 2400bd240fcaSzhanghailiang if (local_err) { 240167cc32ebSVeres Lajos /* if no 'removable' file, it doesn't support offline mem blk */ 2402bd240fcaSzhanghailiang if (errno == ENOENT) { 2403bd240fcaSzhanghailiang error_free(local_err); 2404bd240fcaSzhanghailiang mem_blk->can_offline = false; 2405bd240fcaSzhanghailiang } else { 2406bd240fcaSzhanghailiang error_propagate(errp, local_err); 2407bd240fcaSzhanghailiang } 2408bd240fcaSzhanghailiang } else { 2409bd240fcaSzhanghailiang mem_blk->can_offline = (removable != '0'); 2410bd240fcaSzhanghailiang } 2411bd240fcaSzhanghailiang } else { 2412bd240fcaSzhanghailiang if (mem_blk->online != (strncmp(status, "online", 6) == 0)) { 24137064024dSMarc-André Lureau const char *new_state = mem_blk->online ? "online" : "offline"; 2414bd240fcaSzhanghailiang 2415bd240fcaSzhanghailiang ga_write_sysfs_file(dirfd, "state", new_state, strlen(new_state), 2416bd240fcaSzhanghailiang &local_err); 2417bd240fcaSzhanghailiang if (local_err) { 2418bd240fcaSzhanghailiang error_free(local_err); 2419bd240fcaSzhanghailiang result->response = 2420bd240fcaSzhanghailiang GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_FAILED; 2421bd240fcaSzhanghailiang goto out2; 2422bd240fcaSzhanghailiang } 2423bd240fcaSzhanghailiang 2424bd240fcaSzhanghailiang result->response = GUEST_MEMORY_BLOCK_RESPONSE_TYPE_SUCCESS; 2425bd240fcaSzhanghailiang result->has_error_code = false; 2426bd240fcaSzhanghailiang } /* otherwise pretend successful re-(on|off)-lining */ 2427bd240fcaSzhanghailiang } 2428bd240fcaSzhanghailiang g_free(status); 2429bd240fcaSzhanghailiang close(dirfd); 2430bd240fcaSzhanghailiang return; 2431bd240fcaSzhanghailiang 2432bd240fcaSzhanghailiang out2: 2433bd240fcaSzhanghailiang g_free(status); 2434bd240fcaSzhanghailiang close(dirfd); 2435bd240fcaSzhanghailiang out1: 2436bd240fcaSzhanghailiang if (!sys2memblk) { 2437bd240fcaSzhanghailiang result->has_error_code = true; 2438bd240fcaSzhanghailiang result->error_code = errno; 2439bd240fcaSzhanghailiang } 2440bd240fcaSzhanghailiang } 2441bd240fcaSzhanghailiang 2442a065aaa9Szhanghailiang GuestMemoryBlockList *qmp_guest_get_memory_blocks(Error **errp) 2443a065aaa9Szhanghailiang { 2444bd240fcaSzhanghailiang GuestMemoryBlockList *head, **link; 2445bd240fcaSzhanghailiang Error *local_err = NULL; 2446bd240fcaSzhanghailiang struct dirent *de; 2447bd240fcaSzhanghailiang DIR *dp; 2448bd240fcaSzhanghailiang 2449bd240fcaSzhanghailiang head = NULL; 2450bd240fcaSzhanghailiang link = &head; 2451bd240fcaSzhanghailiang 2452bd240fcaSzhanghailiang dp = opendir("/sys/devices/system/memory/"); 2453bd240fcaSzhanghailiang if (!dp) { 2454f693fe6eSMichael Roth /* it's ok if this happens to be a system that doesn't expose 2455f693fe6eSMichael Roth * memory blocks via sysfs, but otherwise we should report 2456f693fe6eSMichael Roth * an error 2457f693fe6eSMichael Roth */ 2458f693fe6eSMichael Roth if (errno != ENOENT) { 2459bd240fcaSzhanghailiang error_setg_errno(errp, errno, "Can't open directory" 24609af9e0feSMarkus Armbruster "\"/sys/devices/system/memory/\""); 2461f693fe6eSMichael Roth } 2462bd240fcaSzhanghailiang return NULL; 2463bd240fcaSzhanghailiang } 2464bd240fcaSzhanghailiang 2465bd240fcaSzhanghailiang /* Note: the phys_index of memory block may be discontinuous, 2466bd240fcaSzhanghailiang * this is because a memblk is the unit of the Sparse Memory design, which 2467bd240fcaSzhanghailiang * allows discontinuous memory ranges (ex. NUMA), so here we should 2468bd240fcaSzhanghailiang * traverse the memory block directory. 2469bd240fcaSzhanghailiang */ 2470bd240fcaSzhanghailiang while ((de = readdir(dp)) != NULL) { 2471bd240fcaSzhanghailiang GuestMemoryBlock *mem_blk; 2472bd240fcaSzhanghailiang GuestMemoryBlockList *entry; 2473bd240fcaSzhanghailiang 2474bd240fcaSzhanghailiang if ((strncmp(de->d_name, "memory", 6) != 0) || 2475bd240fcaSzhanghailiang !(de->d_type & DT_DIR)) { 2476bd240fcaSzhanghailiang continue; 2477bd240fcaSzhanghailiang } 2478bd240fcaSzhanghailiang 2479bd240fcaSzhanghailiang mem_blk = g_malloc0(sizeof *mem_blk); 2480bd240fcaSzhanghailiang /* The d_name is "memoryXXX", phys_index is block id, same as XXX */ 2481bd240fcaSzhanghailiang mem_blk->phys_index = strtoul(&de->d_name[6], NULL, 10); 2482bd240fcaSzhanghailiang mem_blk->has_can_offline = true; /* lolspeak ftw */ 2483bd240fcaSzhanghailiang transfer_memory_block(mem_blk, true, NULL, &local_err); 2484bd240fcaSzhanghailiang 2485bd240fcaSzhanghailiang entry = g_malloc0(sizeof *entry); 2486bd240fcaSzhanghailiang entry->value = mem_blk; 2487bd240fcaSzhanghailiang 2488bd240fcaSzhanghailiang *link = entry; 2489bd240fcaSzhanghailiang link = &entry->next; 2490bd240fcaSzhanghailiang } 2491bd240fcaSzhanghailiang 2492bd240fcaSzhanghailiang closedir(dp); 2493bd240fcaSzhanghailiang if (local_err == NULL) { 2494bd240fcaSzhanghailiang /* there's no guest with zero memory blocks */ 2495bd240fcaSzhanghailiang if (head == NULL) { 2496bd240fcaSzhanghailiang error_setg(errp, "guest reported zero memory blocks!"); 2497bd240fcaSzhanghailiang } 2498bd240fcaSzhanghailiang return head; 2499bd240fcaSzhanghailiang } 2500bd240fcaSzhanghailiang 2501bd240fcaSzhanghailiang qapi_free_GuestMemoryBlockList(head); 2502bd240fcaSzhanghailiang error_propagate(errp, local_err); 2503a065aaa9Szhanghailiang return NULL; 2504a065aaa9Szhanghailiang } 2505a065aaa9Szhanghailiang 2506a065aaa9Szhanghailiang GuestMemoryBlockResponseList * 2507a065aaa9Szhanghailiang qmp_guest_set_memory_blocks(GuestMemoryBlockList *mem_blks, Error **errp) 2508a065aaa9Szhanghailiang { 250932ca7927Szhanghailiang GuestMemoryBlockResponseList *head, **link; 251032ca7927Szhanghailiang Error *local_err = NULL; 251132ca7927Szhanghailiang 251232ca7927Szhanghailiang head = NULL; 251332ca7927Szhanghailiang link = &head; 251432ca7927Szhanghailiang 251532ca7927Szhanghailiang while (mem_blks != NULL) { 251632ca7927Szhanghailiang GuestMemoryBlockResponse *result; 251732ca7927Szhanghailiang GuestMemoryBlockResponseList *entry; 251832ca7927Szhanghailiang GuestMemoryBlock *current_mem_blk = mem_blks->value; 251932ca7927Szhanghailiang 252032ca7927Szhanghailiang result = g_malloc0(sizeof(*result)); 252132ca7927Szhanghailiang result->phys_index = current_mem_blk->phys_index; 252232ca7927Szhanghailiang transfer_memory_block(current_mem_blk, false, result, &local_err); 252332ca7927Szhanghailiang if (local_err) { /* should never happen */ 252432ca7927Szhanghailiang goto err; 252532ca7927Szhanghailiang } 252632ca7927Szhanghailiang entry = g_malloc0(sizeof *entry); 252732ca7927Szhanghailiang entry->value = result; 252832ca7927Szhanghailiang 252932ca7927Szhanghailiang *link = entry; 253032ca7927Szhanghailiang link = &entry->next; 253132ca7927Szhanghailiang mem_blks = mem_blks->next; 253232ca7927Szhanghailiang } 253332ca7927Szhanghailiang 253432ca7927Szhanghailiang return head; 253532ca7927Szhanghailiang err: 253632ca7927Szhanghailiang qapi_free_GuestMemoryBlockResponseList(head); 253732ca7927Szhanghailiang error_propagate(errp, local_err); 2538a065aaa9Szhanghailiang return NULL; 2539a065aaa9Szhanghailiang } 2540a065aaa9Szhanghailiang 2541a065aaa9Szhanghailiang GuestMemoryBlockInfo *qmp_guest_get_memory_block_info(Error **errp) 2542a065aaa9Szhanghailiang { 2543ef82b60bSzhanghailiang Error *local_err = NULL; 2544ef82b60bSzhanghailiang char *dirpath; 2545ef82b60bSzhanghailiang int dirfd; 2546ef82b60bSzhanghailiang char *buf; 2547ef82b60bSzhanghailiang GuestMemoryBlockInfo *info; 2548ef82b60bSzhanghailiang 2549ef82b60bSzhanghailiang dirpath = g_strdup_printf("/sys/devices/system/memory/"); 2550ef82b60bSzhanghailiang dirfd = open(dirpath, O_RDONLY | O_DIRECTORY); 2551ef82b60bSzhanghailiang if (dirfd == -1) { 2552ef82b60bSzhanghailiang error_setg_errno(errp, errno, "open(\"%s\")", dirpath); 2553ef82b60bSzhanghailiang g_free(dirpath); 2554a065aaa9Szhanghailiang return NULL; 2555a065aaa9Szhanghailiang } 2556ef82b60bSzhanghailiang g_free(dirpath); 2557ef82b60bSzhanghailiang 2558ef82b60bSzhanghailiang buf = g_malloc0(20); 2559ef82b60bSzhanghailiang ga_read_sysfs_file(dirfd, "block_size_bytes", buf, 20, &local_err); 25608ce1ee46SShannon Zhao close(dirfd); 2561ef82b60bSzhanghailiang if (local_err) { 2562ef82b60bSzhanghailiang g_free(buf); 2563ef82b60bSzhanghailiang error_propagate(errp, local_err); 2564ef82b60bSzhanghailiang return NULL; 2565ef82b60bSzhanghailiang } 2566ef82b60bSzhanghailiang 2567ef82b60bSzhanghailiang info = g_new0(GuestMemoryBlockInfo, 1); 2568ef82b60bSzhanghailiang info->size = strtol(buf, NULL, 16); /* the unit is bytes */ 2569ef82b60bSzhanghailiang 2570ef82b60bSzhanghailiang g_free(buf); 2571ef82b60bSzhanghailiang 2572ef82b60bSzhanghailiang return info; 2573ef82b60bSzhanghailiang } 2574a065aaa9Szhanghailiang 2575e72c3f2eSMichael Roth #else /* defined(__linux__) */ 2576e72c3f2eSMichael Roth 257777dbc81bSMarkus Armbruster void qmp_guest_suspend_disk(Error **errp) 2578e72c3f2eSMichael Roth { 2579c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2580e72c3f2eSMichael Roth } 2581e72c3f2eSMichael Roth 258277dbc81bSMarkus Armbruster void qmp_guest_suspend_ram(Error **errp) 2583e72c3f2eSMichael Roth { 2584c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2585e72c3f2eSMichael Roth } 2586e72c3f2eSMichael Roth 258777dbc81bSMarkus Armbruster void qmp_guest_suspend_hybrid(Error **errp) 2588e72c3f2eSMichael Roth { 2589c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2590e72c3f2eSMichael Roth } 2591e72c3f2eSMichael Roth 2592e72c3f2eSMichael Roth GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp) 2593e72c3f2eSMichael Roth { 2594c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2595e72c3f2eSMichael Roth return NULL; 2596e72c3f2eSMichael Roth } 2597e72c3f2eSMichael Roth 2598d2baff62SLaszlo Ersek GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp) 2599d2baff62SLaszlo Ersek { 2600c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2601d2baff62SLaszlo Ersek return NULL; 2602d2baff62SLaszlo Ersek } 2603d2baff62SLaszlo Ersek 2604cbb65fc2SLaszlo Ersek int64_t qmp_guest_set_vcpus(GuestLogicalProcessorList *vcpus, Error **errp) 2605cbb65fc2SLaszlo Ersek { 2606c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2607cbb65fc2SLaszlo Ersek return -1; 2608cbb65fc2SLaszlo Ersek } 2609cbb65fc2SLaszlo Ersek 2610215a2771SDaniel P. Berrange void qmp_guest_set_user_password(const char *username, 2611215a2771SDaniel P. Berrange const char *password, 2612215a2771SDaniel P. Berrange bool crypted, 2613215a2771SDaniel P. Berrange Error **errp) 2614215a2771SDaniel P. Berrange { 2615c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2616215a2771SDaniel P. Berrange } 2617215a2771SDaniel P. Berrange 2618a065aaa9Szhanghailiang GuestMemoryBlockList *qmp_guest_get_memory_blocks(Error **errp) 2619a065aaa9Szhanghailiang { 2620c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2621a065aaa9Szhanghailiang return NULL; 2622a065aaa9Szhanghailiang } 2623a065aaa9Szhanghailiang 2624a065aaa9Szhanghailiang GuestMemoryBlockResponseList * 2625a065aaa9Szhanghailiang qmp_guest_set_memory_blocks(GuestMemoryBlockList *mem_blks, Error **errp) 2626a065aaa9Szhanghailiang { 2627c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2628a065aaa9Szhanghailiang return NULL; 2629a065aaa9Szhanghailiang } 2630a065aaa9Szhanghailiang 2631a065aaa9Szhanghailiang GuestMemoryBlockInfo *qmp_guest_get_memory_block_info(Error **errp) 2632a065aaa9Szhanghailiang { 2633c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2634a065aaa9Szhanghailiang return NULL; 2635a065aaa9Szhanghailiang } 2636a065aaa9Szhanghailiang 2637e72c3f2eSMichael Roth #endif 2638e72c3f2eSMichael Roth 2639d35d4cb5SMichael Roth #if !defined(CONFIG_FSFREEZE) 2640d35d4cb5SMichael Roth 264146d4c572STomoki Sekiyama GuestFilesystemInfoList *qmp_guest_get_fsinfo(Error **errp) 264246d4c572STomoki Sekiyama { 2643c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 264446d4c572STomoki Sekiyama return NULL; 264546d4c572STomoki Sekiyama } 264646d4c572STomoki Sekiyama 264777dbc81bSMarkus Armbruster GuestFsfreezeStatus qmp_guest_fsfreeze_status(Error **errp) 2648d35d4cb5SMichael Roth { 2649c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2650d35d4cb5SMichael Roth 2651d35d4cb5SMichael Roth return 0; 2652d35d4cb5SMichael Roth } 2653d35d4cb5SMichael Roth 265477dbc81bSMarkus Armbruster int64_t qmp_guest_fsfreeze_freeze(Error **errp) 2655d35d4cb5SMichael Roth { 2656c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2657d35d4cb5SMichael Roth 2658d35d4cb5SMichael Roth return 0; 2659d35d4cb5SMichael Roth } 2660d35d4cb5SMichael Roth 2661e99bce20STomoki Sekiyama int64_t qmp_guest_fsfreeze_freeze_list(bool has_mountpoints, 2662e99bce20STomoki Sekiyama strList *mountpoints, 2663e99bce20STomoki Sekiyama Error **errp) 2664e99bce20STomoki Sekiyama { 2665c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2666e99bce20STomoki Sekiyama 2667e99bce20STomoki Sekiyama return 0; 2668e99bce20STomoki Sekiyama } 2669e99bce20STomoki Sekiyama 267077dbc81bSMarkus Armbruster int64_t qmp_guest_fsfreeze_thaw(Error **errp) 2671d35d4cb5SMichael Roth { 2672c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2673d35d4cb5SMichael Roth 2674d35d4cb5SMichael Roth return 0; 2675d35d4cb5SMichael Roth } 2676eab5fd59SPaolo Bonzini #endif /* CONFIG_FSFREEZE */ 2677d35d4cb5SMichael Roth 2678eab5fd59SPaolo Bonzini #if !defined(CONFIG_FSTRIM) 2679e82855d9SJustin Ossevoort GuestFilesystemTrimResponse * 2680e82855d9SJustin Ossevoort qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **errp) 2681eab5fd59SPaolo Bonzini { 2682c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2683e82855d9SJustin Ossevoort return NULL; 2684eab5fd59SPaolo Bonzini } 2685d35d4cb5SMichael Roth #endif 2686d35d4cb5SMichael Roth 26871281c08aSTomoki Sekiyama /* add unsupported commands to the blacklist */ 26881281c08aSTomoki Sekiyama GList *ga_command_blacklist_init(GList *blacklist) 26891281c08aSTomoki Sekiyama { 26901281c08aSTomoki Sekiyama #if !defined(__linux__) 26911281c08aSTomoki Sekiyama { 26921281c08aSTomoki Sekiyama const char *list[] = { 26931281c08aSTomoki Sekiyama "guest-suspend-disk", "guest-suspend-ram", 26941281c08aSTomoki Sekiyama "guest-suspend-hybrid", "guest-network-get-interfaces", 26950dd38a03Szhanghailiang "guest-get-vcpus", "guest-set-vcpus", 26960dd38a03Szhanghailiang "guest-get-memory-blocks", "guest-set-memory-blocks", 26970dd38a03Szhanghailiang "guest-get-memory-block-size", NULL}; 26981281c08aSTomoki Sekiyama char **p = (char **)list; 26991281c08aSTomoki Sekiyama 27001281c08aSTomoki Sekiyama while (*p) { 27014bca81ceSMarc-André Lureau blacklist = g_list_append(blacklist, g_strdup(*p++)); 27021281c08aSTomoki Sekiyama } 27031281c08aSTomoki Sekiyama } 27041281c08aSTomoki Sekiyama #endif 27051281c08aSTomoki Sekiyama 27061281c08aSTomoki Sekiyama #if !defined(CONFIG_FSFREEZE) 27071281c08aSTomoki Sekiyama { 27081281c08aSTomoki Sekiyama const char *list[] = { 27091281c08aSTomoki Sekiyama "guest-get-fsinfo", "guest-fsfreeze-status", 27101281c08aSTomoki Sekiyama "guest-fsfreeze-freeze", "guest-fsfreeze-freeze-list", 27111281c08aSTomoki Sekiyama "guest-fsfreeze-thaw", "guest-get-fsinfo", NULL}; 27121281c08aSTomoki Sekiyama char **p = (char **)list; 27131281c08aSTomoki Sekiyama 27141281c08aSTomoki Sekiyama while (*p) { 27154bca81ceSMarc-André Lureau blacklist = g_list_append(blacklist, g_strdup(*p++)); 27161281c08aSTomoki Sekiyama } 27171281c08aSTomoki Sekiyama } 27181281c08aSTomoki Sekiyama #endif 27191281c08aSTomoki Sekiyama 27201281c08aSTomoki Sekiyama #if !defined(CONFIG_FSTRIM) 27214bca81ceSMarc-André Lureau blacklist = g_list_append(blacklist, g_strdup("guest-fstrim")); 27221281c08aSTomoki Sekiyama #endif 27231281c08aSTomoki Sekiyama 27241281c08aSTomoki Sekiyama return blacklist; 27251281c08aSTomoki Sekiyama } 27261281c08aSTomoki Sekiyama 2727c216e5adSMichael Roth /* register init/cleanup routines for stateful command groups */ 2728c216e5adSMichael Roth void ga_command_state_init(GAState *s, GACommandState *cs) 2729c216e5adSMichael Roth { 2730c216e5adSMichael Roth #if defined(CONFIG_FSFREEZE) 2731f22d85e9SMichael Roth ga_command_state_add(cs, NULL, guest_fsfreeze_cleanup); 2732c216e5adSMichael Roth #endif 2733c216e5adSMichael Roth } 2734161a56a9SVinzenz Feenstra 2735e674605fSTomáš Golembiovský #ifdef HAVE_UTMPX 2736e674605fSTomáš Golembiovský 2737161a56a9SVinzenz Feenstra #define QGA_MICRO_SECOND_TO_SECOND 1000000 2738161a56a9SVinzenz Feenstra 2739161a56a9SVinzenz Feenstra static double ga_get_login_time(struct utmpx *user_info) 2740161a56a9SVinzenz Feenstra { 2741161a56a9SVinzenz Feenstra double seconds = (double)user_info->ut_tv.tv_sec; 2742161a56a9SVinzenz Feenstra double useconds = (double)user_info->ut_tv.tv_usec; 2743161a56a9SVinzenz Feenstra useconds /= QGA_MICRO_SECOND_TO_SECOND; 2744161a56a9SVinzenz Feenstra return seconds + useconds; 2745161a56a9SVinzenz Feenstra } 2746161a56a9SVinzenz Feenstra 2747161a56a9SVinzenz Feenstra GuestUserList *qmp_guest_get_users(Error **err) 2748161a56a9SVinzenz Feenstra { 2749161a56a9SVinzenz Feenstra GHashTable *cache = NULL; 2750161a56a9SVinzenz Feenstra GuestUserList *head = NULL, *cur_item = NULL; 2751161a56a9SVinzenz Feenstra struct utmpx *user_info = NULL; 2752161a56a9SVinzenz Feenstra gpointer value = NULL; 2753161a56a9SVinzenz Feenstra GuestUser *user = NULL; 2754161a56a9SVinzenz Feenstra GuestUserList *item = NULL; 2755161a56a9SVinzenz Feenstra double login_time = 0; 2756161a56a9SVinzenz Feenstra 2757161a56a9SVinzenz Feenstra cache = g_hash_table_new(g_str_hash, g_str_equal); 2758161a56a9SVinzenz Feenstra setutxent(); 2759161a56a9SVinzenz Feenstra 2760161a56a9SVinzenz Feenstra for (;;) { 2761161a56a9SVinzenz Feenstra user_info = getutxent(); 2762161a56a9SVinzenz Feenstra if (user_info == NULL) { 2763161a56a9SVinzenz Feenstra break; 2764161a56a9SVinzenz Feenstra } else if (user_info->ut_type != USER_PROCESS) { 2765161a56a9SVinzenz Feenstra continue; 2766161a56a9SVinzenz Feenstra } else if (g_hash_table_contains(cache, user_info->ut_user)) { 2767161a56a9SVinzenz Feenstra value = g_hash_table_lookup(cache, user_info->ut_user); 2768161a56a9SVinzenz Feenstra user = (GuestUser *)value; 2769161a56a9SVinzenz Feenstra login_time = ga_get_login_time(user_info); 2770161a56a9SVinzenz Feenstra /* We're ensuring the earliest login time to be sent */ 2771161a56a9SVinzenz Feenstra if (login_time < user->login_time) { 2772161a56a9SVinzenz Feenstra user->login_time = login_time; 2773161a56a9SVinzenz Feenstra } 2774161a56a9SVinzenz Feenstra continue; 2775161a56a9SVinzenz Feenstra } 2776161a56a9SVinzenz Feenstra 2777161a56a9SVinzenz Feenstra item = g_new0(GuestUserList, 1); 2778161a56a9SVinzenz Feenstra item->value = g_new0(GuestUser, 1); 2779161a56a9SVinzenz Feenstra item->value->user = g_strdup(user_info->ut_user); 2780161a56a9SVinzenz Feenstra item->value->login_time = ga_get_login_time(user_info); 2781161a56a9SVinzenz Feenstra 2782161a56a9SVinzenz Feenstra g_hash_table_insert(cache, item->value->user, item->value); 2783161a56a9SVinzenz Feenstra 2784161a56a9SVinzenz Feenstra if (!cur_item) { 2785161a56a9SVinzenz Feenstra head = cur_item = item; 2786161a56a9SVinzenz Feenstra } else { 2787161a56a9SVinzenz Feenstra cur_item->next = item; 2788161a56a9SVinzenz Feenstra cur_item = item; 2789161a56a9SVinzenz Feenstra } 2790161a56a9SVinzenz Feenstra } 2791161a56a9SVinzenz Feenstra endutxent(); 2792161a56a9SVinzenz Feenstra g_hash_table_destroy(cache); 2793161a56a9SVinzenz Feenstra return head; 2794161a56a9SVinzenz Feenstra } 2795e674605fSTomáš Golembiovský 2796e674605fSTomáš Golembiovský #else 2797e674605fSTomáš Golembiovský 2798e674605fSTomáš Golembiovský GuestUserList *qmp_guest_get_users(Error **errp) 2799e674605fSTomáš Golembiovský { 2800e674605fSTomáš Golembiovský error_setg(errp, QERR_UNSUPPORTED); 2801e674605fSTomáš Golembiovský return NULL; 2802e674605fSTomáš Golembiovský } 2803e674605fSTomáš Golembiovský 2804e674605fSTomáš Golembiovský #endif 28059848f797STomáš Golembiovský 28069848f797STomáš Golembiovský /* Replace escaped special characters with theire real values. The replacement 28079848f797STomáš Golembiovský * is done in place -- returned value is in the original string. 28089848f797STomáš Golembiovský */ 28099848f797STomáš Golembiovský static void ga_osrelease_replace_special(gchar *value) 28109848f797STomáš Golembiovský { 28119848f797STomáš Golembiovský gchar *p, *p2, quote; 28129848f797STomáš Golembiovský 28139848f797STomáš Golembiovský /* Trim the string at first space or semicolon if it is not enclosed in 28149848f797STomáš Golembiovský * single or double quotes. */ 28159848f797STomáš Golembiovský if ((value[0] != '"') || (value[0] == '\'')) { 28169848f797STomáš Golembiovský p = strchr(value, ' '); 28179848f797STomáš Golembiovský if (p != NULL) { 28189848f797STomáš Golembiovský *p = 0; 28199848f797STomáš Golembiovský } 28209848f797STomáš Golembiovský p = strchr(value, ';'); 28219848f797STomáš Golembiovský if (p != NULL) { 28229848f797STomáš Golembiovský *p = 0; 28239848f797STomáš Golembiovský } 28249848f797STomáš Golembiovský return; 28259848f797STomáš Golembiovský } 28269848f797STomáš Golembiovský 28279848f797STomáš Golembiovský quote = value[0]; 28289848f797STomáš Golembiovský p2 = value; 28299848f797STomáš Golembiovský p = value + 1; 28309848f797STomáš Golembiovský while (*p != 0) { 28319848f797STomáš Golembiovský if (*p == '\\') { 28329848f797STomáš Golembiovský p++; 28339848f797STomáš Golembiovský switch (*p) { 28349848f797STomáš Golembiovský case '$': 28359848f797STomáš Golembiovský case '\'': 28369848f797STomáš Golembiovský case '"': 28379848f797STomáš Golembiovský case '\\': 28389848f797STomáš Golembiovský case '`': 28399848f797STomáš Golembiovský break; 28409848f797STomáš Golembiovský default: 28419848f797STomáš Golembiovský /* Keep literal backslash followed by whatever is there */ 28429848f797STomáš Golembiovský p--; 28439848f797STomáš Golembiovský break; 28449848f797STomáš Golembiovský } 28459848f797STomáš Golembiovský } else if (*p == quote) { 28469848f797STomáš Golembiovský *p2 = 0; 28479848f797STomáš Golembiovský break; 28489848f797STomáš Golembiovský } 28499848f797STomáš Golembiovský *(p2++) = *(p++); 28509848f797STomáš Golembiovský } 28519848f797STomáš Golembiovský } 28529848f797STomáš Golembiovský 28539848f797STomáš Golembiovský static GKeyFile *ga_parse_osrelease(const char *fname) 28549848f797STomáš Golembiovský { 28559848f797STomáš Golembiovský gchar *content = NULL; 28569848f797STomáš Golembiovský gchar *content2 = NULL; 28579848f797STomáš Golembiovský GError *err = NULL; 28589848f797STomáš Golembiovský GKeyFile *keys = g_key_file_new(); 28599848f797STomáš Golembiovský const char *group = "[os-release]\n"; 28609848f797STomáš Golembiovský 28619848f797STomáš Golembiovský if (!g_file_get_contents(fname, &content, NULL, &err)) { 28629848f797STomáš Golembiovský slog("failed to read '%s', error: %s", fname, err->message); 28639848f797STomáš Golembiovský goto fail; 28649848f797STomáš Golembiovský } 28659848f797STomáš Golembiovský 28669848f797STomáš Golembiovský if (!g_utf8_validate(content, -1, NULL)) { 28679848f797STomáš Golembiovský slog("file is not utf-8 encoded: %s", fname); 28689848f797STomáš Golembiovský goto fail; 28699848f797STomáš Golembiovský } 28709848f797STomáš Golembiovský content2 = g_strdup_printf("%s%s", group, content); 28719848f797STomáš Golembiovský 28729848f797STomáš Golembiovský if (!g_key_file_load_from_data(keys, content2, -1, G_KEY_FILE_NONE, 28739848f797STomáš Golembiovský &err)) { 28749848f797STomáš Golembiovský slog("failed to parse file '%s', error: %s", fname, err->message); 28759848f797STomáš Golembiovský goto fail; 28769848f797STomáš Golembiovský } 28779848f797STomáš Golembiovský 28789848f797STomáš Golembiovský g_free(content); 28799848f797STomáš Golembiovský g_free(content2); 28809848f797STomáš Golembiovský return keys; 28819848f797STomáš Golembiovský 28829848f797STomáš Golembiovský fail: 28839848f797STomáš Golembiovský g_error_free(err); 28849848f797STomáš Golembiovský g_free(content); 28859848f797STomáš Golembiovský g_free(content2); 28869848f797STomáš Golembiovský g_key_file_free(keys); 28879848f797STomáš Golembiovský return NULL; 28889848f797STomáš Golembiovský } 28899848f797STomáš Golembiovský 28909848f797STomáš Golembiovský GuestOSInfo *qmp_guest_get_osinfo(Error **errp) 28919848f797STomáš Golembiovský { 28929848f797STomáš Golembiovský GuestOSInfo *info = NULL; 28939848f797STomáš Golembiovský struct utsname kinfo; 2894339ca68bSTomáš Golembiovský GKeyFile *osrelease = NULL; 2895339ca68bSTomáš Golembiovský const char *qga_os_release = g_getenv("QGA_OS_RELEASE"); 28969848f797STomáš Golembiovský 28979848f797STomáš Golembiovský info = g_new0(GuestOSInfo, 1); 28989848f797STomáš Golembiovský 28999848f797STomáš Golembiovský if (uname(&kinfo) != 0) { 29009848f797STomáš Golembiovský error_setg_errno(errp, errno, "uname failed"); 29019848f797STomáš Golembiovský } else { 29029848f797STomáš Golembiovský info->has_kernel_version = true; 29039848f797STomáš Golembiovský info->kernel_version = g_strdup(kinfo.version); 29049848f797STomáš Golembiovský info->has_kernel_release = true; 29059848f797STomáš Golembiovský info->kernel_release = g_strdup(kinfo.release); 29069848f797STomáš Golembiovský info->has_machine = true; 29079848f797STomáš Golembiovský info->machine = g_strdup(kinfo.machine); 29089848f797STomáš Golembiovský } 29099848f797STomáš Golembiovský 2910339ca68bSTomáš Golembiovský if (qga_os_release != NULL) { 2911339ca68bSTomáš Golembiovský osrelease = ga_parse_osrelease(qga_os_release); 2912339ca68bSTomáš Golembiovský } else { 29139848f797STomáš Golembiovský osrelease = ga_parse_osrelease("/etc/os-release"); 29149848f797STomáš Golembiovský if (osrelease == NULL) { 29159848f797STomáš Golembiovský osrelease = ga_parse_osrelease("/usr/lib/os-release"); 29169848f797STomáš Golembiovský } 2917339ca68bSTomáš Golembiovský } 29189848f797STomáš Golembiovský 29199848f797STomáš Golembiovský if (osrelease != NULL) { 29209848f797STomáš Golembiovský char *value; 29219848f797STomáš Golembiovský 29229848f797STomáš Golembiovský #define GET_FIELD(field, osfield) do { \ 29239848f797STomáš Golembiovský value = g_key_file_get_value(osrelease, "os-release", osfield, NULL); \ 29249848f797STomáš Golembiovský if (value != NULL) { \ 29259848f797STomáš Golembiovský ga_osrelease_replace_special(value); \ 29269848f797STomáš Golembiovský info->has_ ## field = true; \ 29279848f797STomáš Golembiovský info->field = value; \ 29289848f797STomáš Golembiovský } \ 29299848f797STomáš Golembiovský } while (0) 29309848f797STomáš Golembiovský GET_FIELD(id, "ID"); 29319848f797STomáš Golembiovský GET_FIELD(name, "NAME"); 29329848f797STomáš Golembiovský GET_FIELD(pretty_name, "PRETTY_NAME"); 29339848f797STomáš Golembiovský GET_FIELD(version, "VERSION"); 29349848f797STomáš Golembiovský GET_FIELD(version_id, "VERSION_ID"); 29359848f797STomáš Golembiovský GET_FIELD(variant, "VARIANT"); 29369848f797STomáš Golembiovský GET_FIELD(variant_id, "VARIANT_ID"); 29379848f797STomáš Golembiovský #undef GET_FIELD 29389848f797STomáš Golembiovský 29399848f797STomáš Golembiovský g_key_file_free(osrelease); 29409848f797STomáš Golembiovský } 29419848f797STomáš Golembiovský 29429848f797STomáš Golembiovský return info; 29439848f797STomáš Golembiovský } 2944