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> 19a8d25326SMarkus Armbruster #include "qemu-common.h" 20dc03272dSMichael S. Tsirkin #include "guest-agent-core.h" 21eb815e24SMarkus Armbruster #include "qga-qapi-commands.h" 22e688df6bSMarkus Armbruster #include "qapi/error.h" 237b1b5d19SPaolo Bonzini #include "qapi/qmp/qerror.h" 241de7afc9SPaolo Bonzini #include "qemu/queue.h" 251de7afc9SPaolo Bonzini #include "qemu/host-utils.h" 2612505396SDenis V. Lunev #include "qemu/sockets.h" 27920639caSDaniel P. Berrange #include "qemu/base64.h" 28f348b6d1SVeronia Bahaa #include "qemu/cutils.h" 295d3586b8SPhilippe Mathieu-Daudé #include "commands-common.h" 30c216e5adSMichael Roth 31e674605fSTomáš Golembiovský #ifdef HAVE_UTMPX 32e674605fSTomáš Golembiovský #include <utmpx.h> 33e674605fSTomáš Golembiovský #endif 34e674605fSTomáš Golembiovský 352c02cbf6SLuiz Capitulino #ifndef CONFIG_HAS_ENVIRON 36eecae147SAndreas Färber #ifdef __APPLE__ 37eecae147SAndreas Färber #include <crt_externs.h> 38eecae147SAndreas Färber #define environ (*_NSGetEnviron()) 39eecae147SAndreas Färber #else 402c02cbf6SLuiz Capitulino extern char **environ; 412c02cbf6SLuiz Capitulino #endif 42eecae147SAndreas Färber #endif 432c02cbf6SLuiz Capitulino 44e72c3f2eSMichael Roth #if defined(__linux__) 45e72c3f2eSMichael Roth #include <mntent.h> 46e72c3f2eSMichael Roth #include <linux/fs.h> 47e72c3f2eSMichael Roth #include <ifaddrs.h> 48e72c3f2eSMichael Roth #include <arpa/inet.h> 49e72c3f2eSMichael Roth #include <sys/socket.h> 50e72c3f2eSMichael Roth #include <net/if.h> 5125b5ff1aSChen Hanxiao #include <sys/statvfs.h> 52e72c3f2eSMichael Roth 53b616105aSTomáš Golembiovský #ifdef CONFIG_LIBUDEV 54b616105aSTomáš Golembiovský #include <libudev.h> 55b616105aSTomáš Golembiovský #endif 56b616105aSTomáš Golembiovský 57eab5fd59SPaolo Bonzini #ifdef FIFREEZE 58e72c3f2eSMichael Roth #define CONFIG_FSFREEZE 59e72c3f2eSMichael Roth #endif 60eab5fd59SPaolo Bonzini #ifdef FITRIM 61eab5fd59SPaolo Bonzini #define CONFIG_FSTRIM 62eab5fd59SPaolo Bonzini #endif 63e72c3f2eSMichael Roth #endif 64e72c3f2eSMichael Roth 6577dbc81bSMarkus Armbruster static void ga_wait_child(pid_t pid, int *status, Error **errp) 66d220a6dfSLuiz Capitulino { 67d220a6dfSLuiz Capitulino pid_t rpid; 68d220a6dfSLuiz Capitulino 69d220a6dfSLuiz Capitulino *status = 0; 70d220a6dfSLuiz Capitulino 71d220a6dfSLuiz Capitulino do { 72d220a6dfSLuiz Capitulino rpid = waitpid(pid, status, 0); 73d220a6dfSLuiz Capitulino } while (rpid == -1 && errno == EINTR); 74d220a6dfSLuiz Capitulino 75d220a6dfSLuiz Capitulino if (rpid == -1) { 7677dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to wait for child (pid: %d)", 7777dbc81bSMarkus Armbruster pid); 78d220a6dfSLuiz Capitulino return; 79d220a6dfSLuiz Capitulino } 80d220a6dfSLuiz Capitulino 81d220a6dfSLuiz Capitulino g_assert(rpid == pid); 82d220a6dfSLuiz Capitulino } 83d220a6dfSLuiz Capitulino 8477dbc81bSMarkus Armbruster void qmp_guest_shutdown(bool has_mode, const char *mode, Error **errp) 85c216e5adSMichael Roth { 86c216e5adSMichael Roth const char *shutdown_flag; 87d220a6dfSLuiz Capitulino Error *local_err = NULL; 88d220a6dfSLuiz Capitulino pid_t pid; 893674838cSLuiz Capitulino int status; 90c216e5adSMichael Roth 91c216e5adSMichael Roth slog("guest-shutdown called, mode: %s", mode); 92c216e5adSMichael Roth if (!has_mode || strcmp(mode, "powerdown") == 0) { 93c216e5adSMichael Roth shutdown_flag = "-P"; 94c216e5adSMichael Roth } else if (strcmp(mode, "halt") == 0) { 95c216e5adSMichael Roth shutdown_flag = "-H"; 96c216e5adSMichael Roth } else if (strcmp(mode, "reboot") == 0) { 97c216e5adSMichael Roth shutdown_flag = "-r"; 98c216e5adSMichael Roth } else { 9977dbc81bSMarkus Armbruster error_setg(errp, 100d220a6dfSLuiz Capitulino "mode is invalid (valid values are: halt|powerdown|reboot"); 101c216e5adSMichael Roth return; 102c216e5adSMichael Roth } 103c216e5adSMichael Roth 104d5dd3498SLuiz Capitulino pid = fork(); 105d5dd3498SLuiz Capitulino if (pid == 0) { 106c216e5adSMichael Roth /* child, start the shutdown */ 107c216e5adSMichael Roth setsid(); 1083674838cSLuiz Capitulino reopen_fd_to_null(0); 1093674838cSLuiz Capitulino reopen_fd_to_null(1); 1103674838cSLuiz Capitulino reopen_fd_to_null(2); 111c216e5adSMichael Roth 112485e741cSwhitearchey execle("/sbin/shutdown", "shutdown", "-h", shutdown_flag, "+0", 1133674838cSLuiz Capitulino "hypervisor initiated shutdown", (char*)NULL, environ); 1143674838cSLuiz Capitulino _exit(EXIT_FAILURE); 115d5dd3498SLuiz Capitulino } else if (pid < 0) { 11677dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to create child process"); 117d5dd3498SLuiz Capitulino return; 118d5dd3498SLuiz Capitulino } 119d5dd3498SLuiz Capitulino 120d220a6dfSLuiz Capitulino ga_wait_child(pid, &status, &local_err); 12184d18f06SMarkus Armbruster if (local_err) { 12277dbc81bSMarkus Armbruster error_propagate(errp, local_err); 123d220a6dfSLuiz Capitulino return; 124d220a6dfSLuiz Capitulino } 125d220a6dfSLuiz Capitulino 126d220a6dfSLuiz Capitulino if (!WIFEXITED(status)) { 12777dbc81bSMarkus Armbruster error_setg(errp, "child process has terminated abnormally"); 128d220a6dfSLuiz Capitulino return; 129d220a6dfSLuiz Capitulino } 130d220a6dfSLuiz Capitulino 131d220a6dfSLuiz Capitulino if (WEXITSTATUS(status)) { 13277dbc81bSMarkus Armbruster error_setg(errp, "child process has failed to shutdown"); 133d220a6dfSLuiz Capitulino return; 134d220a6dfSLuiz Capitulino } 135d220a6dfSLuiz Capitulino 136085d8134SPeter Maydell /* succeeded */ 137c216e5adSMichael Roth } 138c216e5adSMichael Roth 1396912e6a9SLei Li int64_t qmp_guest_get_time(Error **errp) 1406912e6a9SLei Li { 1416912e6a9SLei Li int ret; 1426912e6a9SLei Li qemu_timeval tq; 1436912e6a9SLei Li 1446912e6a9SLei Li ret = qemu_gettimeofday(&tq); 1456912e6a9SLei Li if (ret < 0) { 1466912e6a9SLei Li error_setg_errno(errp, errno, "Failed to get time"); 1476912e6a9SLei Li return -1; 1486912e6a9SLei Li } 1496912e6a9SLei Li 1509be38598SEduardo Habkost return tq.tv_sec * 1000000000LL + tq.tv_usec * 1000; 1516912e6a9SLei Li } 1526912e6a9SLei Li 1532c958923SMichal Privoznik void qmp_guest_set_time(bool has_time, int64_t time_ns, Error **errp) 154a1bca57fSLei Li { 155a1bca57fSLei Li int ret; 156a1bca57fSLei Li int status; 157a1bca57fSLei Li pid_t pid; 158a1bca57fSLei Li Error *local_err = NULL; 159a1bca57fSLei Li struct timeval tv; 1605c6096e5SCornelia Huck static const char hwclock_path[] = "/sbin/hwclock"; 1615c6096e5SCornelia Huck static int hwclock_available = -1; 1625c6096e5SCornelia Huck 1635c6096e5SCornelia Huck if (hwclock_available < 0) { 1645c6096e5SCornelia Huck hwclock_available = (access(hwclock_path, X_OK) == 0); 1655c6096e5SCornelia Huck } 1665c6096e5SCornelia Huck 1675c6096e5SCornelia Huck if (!hwclock_available) { 1685c6096e5SCornelia Huck error_setg(errp, QERR_UNSUPPORTED); 1695c6096e5SCornelia Huck return; 1705c6096e5SCornelia Huck } 171a1bca57fSLei Li 1722c958923SMichal Privoznik /* If user has passed a time, validate and set it. */ 1732c958923SMichal Privoznik if (has_time) { 17400d2f370SMarc-André Lureau GDate date = { 0, }; 17500d2f370SMarc-André Lureau 176a1bca57fSLei Li /* year-2038 will overflow in case time_t is 32bit */ 177a1bca57fSLei Li if (time_ns / 1000000000 != (time_t)(time_ns / 1000000000)) { 178a1bca57fSLei Li error_setg(errp, "Time %" PRId64 " is too large", time_ns); 179a1bca57fSLei Li return; 180a1bca57fSLei Li } 181a1bca57fSLei Li 182a1bca57fSLei Li tv.tv_sec = time_ns / 1000000000; 183a1bca57fSLei Li tv.tv_usec = (time_ns % 1000000000) / 1000; 18400d2f370SMarc-André Lureau g_date_set_time_t(&date, tv.tv_sec); 18500d2f370SMarc-André Lureau if (date.year < 1970 || date.year >= 2070) { 18600d2f370SMarc-André Lureau error_setg_errno(errp, errno, "Invalid time"); 18700d2f370SMarc-André Lureau return; 18800d2f370SMarc-André Lureau } 189a1bca57fSLei Li 190a1bca57fSLei Li ret = settimeofday(&tv, NULL); 191a1bca57fSLei Li if (ret < 0) { 192a1bca57fSLei Li error_setg_errno(errp, errno, "Failed to set time to guest"); 193a1bca57fSLei Li return; 194a1bca57fSLei Li } 1952c958923SMichal Privoznik } 196a1bca57fSLei Li 1972c958923SMichal Privoznik /* Now, if user has passed a time to set and the system time is set, we 1982c958923SMichal Privoznik * just need to synchronize the hardware clock. However, if no time was 1992c958923SMichal Privoznik * passed, user is requesting the opposite: set the system time from the 2001634df56SAmos Kong * hardware clock (RTC). */ 201a1bca57fSLei Li pid = fork(); 202a1bca57fSLei Li if (pid == 0) { 203a1bca57fSLei Li setsid(); 204a1bca57fSLei Li reopen_fd_to_null(0); 205a1bca57fSLei Li reopen_fd_to_null(1); 206a1bca57fSLei Li reopen_fd_to_null(2); 207a1bca57fSLei Li 2082c958923SMichal Privoznik /* Use '/sbin/hwclock -w' to set RTC from the system time, 2092c958923SMichal Privoznik * or '/sbin/hwclock -s' to set the system time from RTC. */ 2105c6096e5SCornelia Huck execle(hwclock_path, "hwclock", has_time ? "-w" : "-s", 2112c958923SMichal Privoznik NULL, environ); 212a1bca57fSLei Li _exit(EXIT_FAILURE); 213a1bca57fSLei Li } else if (pid < 0) { 214a1bca57fSLei Li error_setg_errno(errp, errno, "failed to create child process"); 215a1bca57fSLei Li return; 216a1bca57fSLei Li } 217a1bca57fSLei Li 218a1bca57fSLei Li ga_wait_child(pid, &status, &local_err); 21984d18f06SMarkus Armbruster if (local_err) { 220a1bca57fSLei Li error_propagate(errp, local_err); 221a1bca57fSLei Li return; 222a1bca57fSLei Li } 223a1bca57fSLei Li 224a1bca57fSLei Li if (!WIFEXITED(status)) { 225a1bca57fSLei Li error_setg(errp, "child process has terminated abnormally"); 226a1bca57fSLei Li return; 227a1bca57fSLei Li } 228a1bca57fSLei Li 229a1bca57fSLei Li if (WEXITSTATUS(status)) { 230a1bca57fSLei Li error_setg(errp, "hwclock failed to set hardware clock to system time"); 231a1bca57fSLei Li return; 232a1bca57fSLei Li } 233a1bca57fSLei Li } 234a1bca57fSLei Li 235895b00f6SMarc-André Lureau typedef enum { 236895b00f6SMarc-André Lureau RW_STATE_NEW, 237895b00f6SMarc-André Lureau RW_STATE_READING, 238895b00f6SMarc-André Lureau RW_STATE_WRITING, 239895b00f6SMarc-André Lureau } RwState; 240895b00f6SMarc-André Lureau 2415d3586b8SPhilippe Mathieu-Daudé struct GuestFileHandle { 242c216e5adSMichael Roth uint64_t id; 243c216e5adSMichael Roth FILE *fh; 244895b00f6SMarc-André Lureau RwState state; 245c216e5adSMichael Roth QTAILQ_ENTRY(GuestFileHandle) next; 2465d3586b8SPhilippe Mathieu-Daudé }; 247c216e5adSMichael Roth 248c216e5adSMichael Roth static struct { 249c216e5adSMichael Roth QTAILQ_HEAD(, GuestFileHandle) filehandles; 250b4fe97c8SDenis V. Lunev } guest_file_state = { 251b4fe97c8SDenis V. Lunev .filehandles = QTAILQ_HEAD_INITIALIZER(guest_file_state.filehandles), 252b4fe97c8SDenis V. Lunev }; 253c216e5adSMichael Roth 25439097dafSMichael Roth static int64_t guest_file_handle_add(FILE *fh, Error **errp) 255c216e5adSMichael Roth { 256c216e5adSMichael Roth GuestFileHandle *gfh; 25739097dafSMichael Roth int64_t handle; 25839097dafSMichael Roth 25939097dafSMichael Roth handle = ga_get_fd_handle(ga_state, errp); 260a903f40cSMarkus Armbruster if (handle < 0) { 261a903f40cSMarkus Armbruster return -1; 26239097dafSMichael Roth } 263c216e5adSMichael Roth 264f3a06403SMarkus Armbruster gfh = g_new0(GuestFileHandle, 1); 26539097dafSMichael Roth gfh->id = handle; 266c216e5adSMichael Roth gfh->fh = fh; 267c216e5adSMichael Roth QTAILQ_INSERT_TAIL(&guest_file_state.filehandles, gfh, next); 26839097dafSMichael Roth 26939097dafSMichael Roth return handle; 270c216e5adSMichael Roth } 271c216e5adSMichael Roth 2725d3586b8SPhilippe Mathieu-Daudé GuestFileHandle *guest_file_handle_find(int64_t id, Error **errp) 273c216e5adSMichael Roth { 274c216e5adSMichael Roth GuestFileHandle *gfh; 275c216e5adSMichael Roth 276c216e5adSMichael Roth QTAILQ_FOREACH(gfh, &guest_file_state.filehandles, next) 277c216e5adSMichael Roth { 278c216e5adSMichael Roth if (gfh->id == id) { 279c216e5adSMichael Roth return gfh; 280c216e5adSMichael Roth } 281c216e5adSMichael Roth } 282c216e5adSMichael Roth 28377dbc81bSMarkus Armbruster error_setg(errp, "handle '%" PRId64 "' has not been found", id); 284c216e5adSMichael Roth return NULL; 285c216e5adSMichael Roth } 286c216e5adSMichael Roth 287c689b4f1SLaszlo Ersek typedef const char * const ccpc; 288c689b4f1SLaszlo Ersek 2898fe6bbcaSLaszlo Ersek #ifndef O_BINARY 2908fe6bbcaSLaszlo Ersek #define O_BINARY 0 2918fe6bbcaSLaszlo Ersek #endif 2928fe6bbcaSLaszlo Ersek 293c689b4f1SLaszlo Ersek /* http://pubs.opengroup.org/onlinepubs/9699919799/functions/fopen.html */ 294c689b4f1SLaszlo Ersek static const struct { 295c689b4f1SLaszlo Ersek ccpc *forms; 296c689b4f1SLaszlo Ersek int oflag_base; 297c689b4f1SLaszlo Ersek } guest_file_open_modes[] = { 2988fe6bbcaSLaszlo Ersek { (ccpc[]){ "r", NULL }, O_RDONLY }, 2998fe6bbcaSLaszlo Ersek { (ccpc[]){ "rb", NULL }, O_RDONLY | O_BINARY }, 3008fe6bbcaSLaszlo Ersek { (ccpc[]){ "w", NULL }, O_WRONLY | O_CREAT | O_TRUNC }, 3018fe6bbcaSLaszlo Ersek { (ccpc[]){ "wb", NULL }, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY }, 3028fe6bbcaSLaszlo Ersek { (ccpc[]){ "a", NULL }, O_WRONLY | O_CREAT | O_APPEND }, 3038fe6bbcaSLaszlo Ersek { (ccpc[]){ "ab", NULL }, O_WRONLY | O_CREAT | O_APPEND | O_BINARY }, 3048fe6bbcaSLaszlo Ersek { (ccpc[]){ "r+", NULL }, O_RDWR }, 3058fe6bbcaSLaszlo Ersek { (ccpc[]){ "rb+", "r+b", NULL }, O_RDWR | O_BINARY }, 3068fe6bbcaSLaszlo Ersek { (ccpc[]){ "w+", NULL }, O_RDWR | O_CREAT | O_TRUNC }, 3078fe6bbcaSLaszlo Ersek { (ccpc[]){ "wb+", "w+b", NULL }, O_RDWR | O_CREAT | O_TRUNC | O_BINARY }, 3088fe6bbcaSLaszlo Ersek { (ccpc[]){ "a+", NULL }, O_RDWR | O_CREAT | O_APPEND }, 3098fe6bbcaSLaszlo Ersek { (ccpc[]){ "ab+", "a+b", NULL }, O_RDWR | O_CREAT | O_APPEND | O_BINARY } 310c689b4f1SLaszlo Ersek }; 311c689b4f1SLaszlo Ersek 312c689b4f1SLaszlo Ersek static int 31377dbc81bSMarkus Armbruster find_open_flag(const char *mode_str, Error **errp) 314c689b4f1SLaszlo Ersek { 315c689b4f1SLaszlo Ersek unsigned mode; 316c689b4f1SLaszlo Ersek 317c689b4f1SLaszlo Ersek for (mode = 0; mode < ARRAY_SIZE(guest_file_open_modes); ++mode) { 318c689b4f1SLaszlo Ersek ccpc *form; 319c689b4f1SLaszlo Ersek 320c689b4f1SLaszlo Ersek form = guest_file_open_modes[mode].forms; 321c689b4f1SLaszlo Ersek while (*form != NULL && strcmp(*form, mode_str) != 0) { 322c689b4f1SLaszlo Ersek ++form; 323c689b4f1SLaszlo Ersek } 324c689b4f1SLaszlo Ersek if (*form != NULL) { 325c689b4f1SLaszlo Ersek break; 326c689b4f1SLaszlo Ersek } 327c689b4f1SLaszlo Ersek } 328c689b4f1SLaszlo Ersek 329c689b4f1SLaszlo Ersek if (mode == ARRAY_SIZE(guest_file_open_modes)) { 33077dbc81bSMarkus Armbruster error_setg(errp, "invalid file open mode '%s'", mode_str); 331c689b4f1SLaszlo Ersek return -1; 332c689b4f1SLaszlo Ersek } 333c689b4f1SLaszlo Ersek return guest_file_open_modes[mode].oflag_base | O_NOCTTY | O_NONBLOCK; 334c689b4f1SLaszlo Ersek } 335c689b4f1SLaszlo Ersek 336c689b4f1SLaszlo Ersek #define DEFAULT_NEW_FILE_MODE (S_IRUSR | S_IWUSR | \ 337c689b4f1SLaszlo Ersek S_IRGRP | S_IWGRP | \ 338c689b4f1SLaszlo Ersek S_IROTH | S_IWOTH) 339c689b4f1SLaszlo Ersek 340c689b4f1SLaszlo Ersek static FILE * 34177dbc81bSMarkus Armbruster safe_open_or_create(const char *path, const char *mode, Error **errp) 342c689b4f1SLaszlo Ersek { 343c689b4f1SLaszlo Ersek Error *local_err = NULL; 344c689b4f1SLaszlo Ersek int oflag; 345c689b4f1SLaszlo Ersek 346c689b4f1SLaszlo Ersek oflag = find_open_flag(mode, &local_err); 347c689b4f1SLaszlo Ersek if (local_err == NULL) { 348c689b4f1SLaszlo Ersek int fd; 349c689b4f1SLaszlo Ersek 350c689b4f1SLaszlo Ersek /* If the caller wants / allows creation of a new file, we implement it 351c689b4f1SLaszlo Ersek * with a two step process: open() + (open() / fchmod()). 352c689b4f1SLaszlo Ersek * 353c689b4f1SLaszlo Ersek * First we insist on creating the file exclusively as a new file. If 354c689b4f1SLaszlo Ersek * that succeeds, we're free to set any file-mode bits on it. (The 355c689b4f1SLaszlo Ersek * motivation is that we want to set those file-mode bits independently 356c689b4f1SLaszlo Ersek * of the current umask.) 357c689b4f1SLaszlo Ersek * 358c689b4f1SLaszlo Ersek * If the exclusive creation fails because the file already exists 359c689b4f1SLaszlo Ersek * (EEXIST is not possible for any other reason), we just attempt to 360c689b4f1SLaszlo Ersek * open the file, but in this case we won't be allowed to change the 361c689b4f1SLaszlo Ersek * file-mode bits on the preexistent file. 362c689b4f1SLaszlo Ersek * 363c689b4f1SLaszlo Ersek * The pathname should never disappear between the two open()s in 364c689b4f1SLaszlo Ersek * practice. If it happens, then someone very likely tried to race us. 365c689b4f1SLaszlo Ersek * In this case just go ahead and report the ENOENT from the second 366c689b4f1SLaszlo Ersek * open() to the caller. 367c689b4f1SLaszlo Ersek * 368c689b4f1SLaszlo Ersek * If the caller wants to open a preexistent file, then the first 369c689b4f1SLaszlo Ersek * open() is decisive and its third argument is ignored, and the second 370c689b4f1SLaszlo Ersek * open() and the fchmod() are never called. 371c689b4f1SLaszlo Ersek */ 372c689b4f1SLaszlo Ersek fd = open(path, oflag | ((oflag & O_CREAT) ? O_EXCL : 0), 0); 373c689b4f1SLaszlo Ersek if (fd == -1 && errno == EEXIST) { 374c689b4f1SLaszlo Ersek oflag &= ~(unsigned)O_CREAT; 375c689b4f1SLaszlo Ersek fd = open(path, oflag); 376c689b4f1SLaszlo Ersek } 377c689b4f1SLaszlo Ersek 378c689b4f1SLaszlo Ersek if (fd == -1) { 379c689b4f1SLaszlo Ersek error_setg_errno(&local_err, errno, "failed to open file '%s' " 380c689b4f1SLaszlo Ersek "(mode: '%s')", path, mode); 381c689b4f1SLaszlo Ersek } else { 382c689b4f1SLaszlo Ersek qemu_set_cloexec(fd); 383c689b4f1SLaszlo Ersek 384c689b4f1SLaszlo Ersek if ((oflag & O_CREAT) && fchmod(fd, DEFAULT_NEW_FILE_MODE) == -1) { 385c689b4f1SLaszlo Ersek error_setg_errno(&local_err, errno, "failed to set permission " 386c689b4f1SLaszlo Ersek "0%03o on new file '%s' (mode: '%s')", 387c689b4f1SLaszlo Ersek (unsigned)DEFAULT_NEW_FILE_MODE, path, mode); 388c689b4f1SLaszlo Ersek } else { 389c689b4f1SLaszlo Ersek FILE *f; 390c689b4f1SLaszlo Ersek 391c689b4f1SLaszlo Ersek f = fdopen(fd, mode); 392c689b4f1SLaszlo Ersek if (f == NULL) { 393c689b4f1SLaszlo Ersek error_setg_errno(&local_err, errno, "failed to associate " 394c689b4f1SLaszlo Ersek "stdio stream with file descriptor %d, " 395c689b4f1SLaszlo Ersek "file '%s' (mode: '%s')", fd, path, mode); 396c689b4f1SLaszlo Ersek } else { 397c689b4f1SLaszlo Ersek return f; 398c689b4f1SLaszlo Ersek } 399c689b4f1SLaszlo Ersek } 400c689b4f1SLaszlo Ersek 401c689b4f1SLaszlo Ersek close(fd); 4022b720018SLaszlo Ersek if (oflag & O_CREAT) { 4032b720018SLaszlo Ersek unlink(path); 4042b720018SLaszlo Ersek } 405c689b4f1SLaszlo Ersek } 406c689b4f1SLaszlo Ersek } 407c689b4f1SLaszlo Ersek 40877dbc81bSMarkus Armbruster error_propagate(errp, local_err); 409c689b4f1SLaszlo Ersek return NULL; 410c689b4f1SLaszlo Ersek } 411c689b4f1SLaszlo Ersek 41277dbc81bSMarkus Armbruster int64_t qmp_guest_file_open(const char *path, bool has_mode, const char *mode, 41377dbc81bSMarkus Armbruster Error **errp) 414c216e5adSMichael Roth { 415c216e5adSMichael Roth FILE *fh; 416c689b4f1SLaszlo Ersek Error *local_err = NULL; 41785b6f6f5SSimon Zolin int64_t handle; 418c216e5adSMichael Roth 419c216e5adSMichael Roth if (!has_mode) { 420c216e5adSMichael Roth mode = "r"; 421c216e5adSMichael Roth } 422c216e5adSMichael Roth slog("guest-file-open called, filepath: %s, mode: %s", path, mode); 423c689b4f1SLaszlo Ersek fh = safe_open_or_create(path, mode, &local_err); 424c689b4f1SLaszlo Ersek if (local_err != NULL) { 42577dbc81bSMarkus Armbruster error_propagate(errp, local_err); 426c216e5adSMichael Roth return -1; 427c216e5adSMichael Roth } 428c216e5adSMichael Roth 429c216e5adSMichael Roth /* set fd non-blocking to avoid common use cases (like reading from a 430c216e5adSMichael Roth * named pipe) from hanging the agent 431c216e5adSMichael Roth */ 43212505396SDenis V. Lunev qemu_set_nonblock(fileno(fh)); 433c216e5adSMichael Roth 43477dbc81bSMarkus Armbruster handle = guest_file_handle_add(fh, errp); 435a903f40cSMarkus Armbruster if (handle < 0) { 43639097dafSMichael Roth fclose(fh); 43739097dafSMichael Roth return -1; 43839097dafSMichael Roth } 43939097dafSMichael Roth 440d607a523SStefan Weil slog("guest-file-open, handle: %" PRId64, handle); 44139097dafSMichael Roth return handle; 442c216e5adSMichael Roth } 443c216e5adSMichael Roth 44477dbc81bSMarkus Armbruster void qmp_guest_file_close(int64_t handle, Error **errp) 445c216e5adSMichael Roth { 44677dbc81bSMarkus Armbruster GuestFileHandle *gfh = guest_file_handle_find(handle, errp); 447c216e5adSMichael Roth int ret; 448c216e5adSMichael Roth 449d607a523SStefan Weil slog("guest-file-close called, handle: %" PRId64, handle); 450c216e5adSMichael Roth if (!gfh) { 451c216e5adSMichael Roth return; 452c216e5adSMichael Roth } 453c216e5adSMichael Roth 454c216e5adSMichael Roth ret = fclose(gfh->fh); 4553ac4b7c5SLuiz Capitulino if (ret == EOF) { 45677dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to close handle"); 457c216e5adSMichael Roth return; 458c216e5adSMichael Roth } 459c216e5adSMichael Roth 460c216e5adSMichael Roth QTAILQ_REMOVE(&guest_file_state.filehandles, gfh, next); 461c216e5adSMichael Roth g_free(gfh); 462c216e5adSMichael Roth } 463c216e5adSMichael Roth 464ead83a13SPhilippe Mathieu-Daudé GuestFileRead *guest_file_read_unsafe(GuestFileHandle *gfh, 46577dbc81bSMarkus Armbruster int64_t count, Error **errp) 466c216e5adSMichael Roth { 467c216e5adSMichael Roth GuestFileRead *read_data = NULL; 468c216e5adSMichael Roth guchar *buf; 469ead83a13SPhilippe Mathieu-Daudé FILE *fh = gfh->fh; 470c216e5adSMichael Roth size_t read_count; 471c216e5adSMichael Roth 472895b00f6SMarc-André Lureau /* explicitly flush when switching from writing to reading */ 473895b00f6SMarc-André Lureau if (gfh->state == RW_STATE_WRITING) { 474895b00f6SMarc-André Lureau int ret = fflush(fh); 475895b00f6SMarc-André Lureau if (ret == EOF) { 476895b00f6SMarc-André Lureau error_setg_errno(errp, errno, "failed to flush file"); 477895b00f6SMarc-André Lureau return NULL; 478895b00f6SMarc-André Lureau } 479895b00f6SMarc-André Lureau gfh->state = RW_STATE_NEW; 480895b00f6SMarc-André Lureau } 481895b00f6SMarc-André Lureau 482c216e5adSMichael Roth buf = g_malloc0(count+1); 483c216e5adSMichael Roth read_count = fread(buf, 1, count, fh); 484c216e5adSMichael Roth if (ferror(fh)) { 48577dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to read file"); 486c216e5adSMichael Roth } else { 487c216e5adSMichael Roth buf[read_count] = 0; 488f3a06403SMarkus Armbruster read_data = g_new0(GuestFileRead, 1); 489c216e5adSMichael Roth read_data->count = read_count; 490c216e5adSMichael Roth read_data->eof = feof(fh); 491c216e5adSMichael Roth if (read_count) { 492c216e5adSMichael Roth read_data->buf_b64 = g_base64_encode(buf, read_count); 493c216e5adSMichael Roth } 494895b00f6SMarc-André Lureau gfh->state = RW_STATE_READING; 495c216e5adSMichael Roth } 496c216e5adSMichael Roth g_free(buf); 497c216e5adSMichael Roth clearerr(fh); 498c216e5adSMichael Roth 499c216e5adSMichael Roth return read_data; 500c216e5adSMichael Roth } 501c216e5adSMichael Roth 502c216e5adSMichael Roth GuestFileWrite *qmp_guest_file_write(int64_t handle, const char *buf_b64, 50377dbc81bSMarkus Armbruster bool has_count, int64_t count, 50477dbc81bSMarkus Armbruster Error **errp) 505c216e5adSMichael Roth { 506c216e5adSMichael Roth GuestFileWrite *write_data = NULL; 507c216e5adSMichael Roth guchar *buf; 508c216e5adSMichael Roth gsize buf_len; 509c216e5adSMichael Roth int write_count; 51077dbc81bSMarkus Armbruster GuestFileHandle *gfh = guest_file_handle_find(handle, errp); 511c216e5adSMichael Roth FILE *fh; 512c216e5adSMichael Roth 513c216e5adSMichael Roth if (!gfh) { 514c216e5adSMichael Roth return NULL; 515c216e5adSMichael Roth } 516c216e5adSMichael Roth 517c216e5adSMichael Roth fh = gfh->fh; 518895b00f6SMarc-André Lureau 519895b00f6SMarc-André Lureau if (gfh->state == RW_STATE_READING) { 520895b00f6SMarc-André Lureau int ret = fseek(fh, 0, SEEK_CUR); 521895b00f6SMarc-André Lureau if (ret == -1) { 522895b00f6SMarc-André Lureau error_setg_errno(errp, errno, "failed to seek file"); 523895b00f6SMarc-André Lureau return NULL; 524895b00f6SMarc-André Lureau } 525895b00f6SMarc-André Lureau gfh->state = RW_STATE_NEW; 526895b00f6SMarc-André Lureau } 527895b00f6SMarc-André Lureau 528920639caSDaniel P. Berrange buf = qbase64_decode(buf_b64, -1, &buf_len, errp); 529920639caSDaniel P. Berrange if (!buf) { 530920639caSDaniel P. Berrange return NULL; 531920639caSDaniel P. Berrange } 532c216e5adSMichael Roth 533c216e5adSMichael Roth if (!has_count) { 534c216e5adSMichael Roth count = buf_len; 535c216e5adSMichael Roth } else if (count < 0 || count > buf_len) { 53677dbc81bSMarkus Armbruster error_setg(errp, "value '%" PRId64 "' is invalid for argument count", 537db3edb66SLuiz Capitulino count); 538c216e5adSMichael Roth g_free(buf); 539c216e5adSMichael Roth return NULL; 540c216e5adSMichael Roth } 541c216e5adSMichael Roth 542c216e5adSMichael Roth write_count = fwrite(buf, 1, count, fh); 543c216e5adSMichael Roth if (ferror(fh)) { 54477dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to write to file"); 545d607a523SStefan Weil slog("guest-file-write failed, handle: %" PRId64, handle); 546c216e5adSMichael Roth } else { 547f3a06403SMarkus Armbruster write_data = g_new0(GuestFileWrite, 1); 548c216e5adSMichael Roth write_data->count = write_count; 549c216e5adSMichael Roth write_data->eof = feof(fh); 550895b00f6SMarc-André Lureau gfh->state = RW_STATE_WRITING; 551c216e5adSMichael Roth } 552c216e5adSMichael Roth g_free(buf); 553c216e5adSMichael Roth clearerr(fh); 554c216e5adSMichael Roth 555c216e5adSMichael Roth return write_data; 556c216e5adSMichael Roth } 557c216e5adSMichael Roth 558c216e5adSMichael Roth struct GuestFileSeek *qmp_guest_file_seek(int64_t handle, int64_t offset, 5590b4b4938SEric Blake GuestFileWhence *whence_code, 5600b4b4938SEric Blake Error **errp) 561c216e5adSMichael Roth { 56277dbc81bSMarkus Armbruster GuestFileHandle *gfh = guest_file_handle_find(handle, errp); 563c216e5adSMichael Roth GuestFileSeek *seek_data = NULL; 564c216e5adSMichael Roth FILE *fh; 565c216e5adSMichael Roth int ret; 5660a982b1bSEric Blake int whence; 5670b4b4938SEric Blake Error *err = NULL; 568c216e5adSMichael Roth 569c216e5adSMichael Roth if (!gfh) { 570c216e5adSMichael Roth return NULL; 571c216e5adSMichael Roth } 572c216e5adSMichael Roth 5730a982b1bSEric Blake /* We stupidly exposed 'whence':'int' in our qapi */ 5740b4b4938SEric Blake whence = ga_parse_whence(whence_code, &err); 5750b4b4938SEric Blake if (err) { 5760b4b4938SEric Blake error_propagate(errp, err); 5770a982b1bSEric Blake return NULL; 5780a982b1bSEric Blake } 5790a982b1bSEric Blake 580c216e5adSMichael Roth fh = gfh->fh; 581c216e5adSMichael Roth ret = fseek(fh, offset, whence); 582c216e5adSMichael Roth if (ret == -1) { 58377dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to seek file"); 584895b00f6SMarc-André Lureau if (errno == ESPIPE) { 585895b00f6SMarc-André Lureau /* file is non-seekable, stdio shouldn't be buffering anyways */ 586895b00f6SMarc-André Lureau gfh->state = RW_STATE_NEW; 587895b00f6SMarc-André Lureau } 588c216e5adSMichael Roth } else { 58910b7c5ddSMarkus Armbruster seek_data = g_new0(GuestFileSeek, 1); 590c216e5adSMichael Roth seek_data->position = ftell(fh); 591c216e5adSMichael Roth seek_data->eof = feof(fh); 592895b00f6SMarc-André Lureau gfh->state = RW_STATE_NEW; 593c216e5adSMichael Roth } 594c216e5adSMichael Roth clearerr(fh); 595c216e5adSMichael Roth 596c216e5adSMichael Roth return seek_data; 597c216e5adSMichael Roth } 598c216e5adSMichael Roth 59977dbc81bSMarkus Armbruster void qmp_guest_file_flush(int64_t handle, Error **errp) 600c216e5adSMichael Roth { 60177dbc81bSMarkus Armbruster GuestFileHandle *gfh = guest_file_handle_find(handle, errp); 602c216e5adSMichael Roth FILE *fh; 603c216e5adSMichael Roth int ret; 604c216e5adSMichael Roth 605c216e5adSMichael Roth if (!gfh) { 606c216e5adSMichael Roth return; 607c216e5adSMichael Roth } 608c216e5adSMichael Roth 609c216e5adSMichael Roth fh = gfh->fh; 610c216e5adSMichael Roth ret = fflush(fh); 611c216e5adSMichael Roth if (ret == EOF) { 61277dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to flush file"); 613895b00f6SMarc-André Lureau } else { 614895b00f6SMarc-André Lureau gfh->state = RW_STATE_NEW; 615c216e5adSMichael Roth } 616c216e5adSMichael Roth } 617c216e5adSMichael Roth 618e72c3f2eSMichael Roth /* linux-specific implementations. avoid this if at all possible. */ 619e72c3f2eSMichael Roth #if defined(__linux__) 620e72c3f2eSMichael Roth 621eab5fd59SPaolo Bonzini #if defined(CONFIG_FSFREEZE) || defined(CONFIG_FSTRIM) 622af02203fSPaolo Bonzini typedef struct FsMount { 623c216e5adSMichael Roth char *dirname; 624c216e5adSMichael Roth char *devtype; 62546d4c572STomoki Sekiyama unsigned int devmajor, devminor; 626af02203fSPaolo Bonzini QTAILQ_ENTRY(FsMount) next; 627af02203fSPaolo Bonzini } FsMount; 628c216e5adSMichael Roth 629e5d9adbdSTomoki Sekiyama typedef QTAILQ_HEAD(FsMountList, FsMount) FsMountList; 6309e8aded4SMichael Roth 631af02203fSPaolo Bonzini static void free_fs_mount_list(FsMountList *mounts) 632c216e5adSMichael Roth { 633af02203fSPaolo Bonzini FsMount *mount, *temp; 634c216e5adSMichael Roth 6359e8aded4SMichael Roth if (!mounts) { 6369e8aded4SMichael Roth return; 6379e8aded4SMichael Roth } 6389e8aded4SMichael Roth 6399e8aded4SMichael Roth QTAILQ_FOREACH_SAFE(mount, mounts, next, temp) { 6409e8aded4SMichael Roth QTAILQ_REMOVE(mounts, mount, next); 641c216e5adSMichael Roth g_free(mount->dirname); 642c216e5adSMichael Roth g_free(mount->devtype); 643c216e5adSMichael Roth g_free(mount); 644c216e5adSMichael Roth } 6459e8aded4SMichael Roth } 6469e8aded4SMichael Roth 64746d4c572STomoki Sekiyama static int dev_major_minor(const char *devpath, 64846d4c572STomoki Sekiyama unsigned int *devmajor, unsigned int *devminor) 64946d4c572STomoki Sekiyama { 65046d4c572STomoki Sekiyama struct stat st; 65146d4c572STomoki Sekiyama 65246d4c572STomoki Sekiyama *devmajor = 0; 65346d4c572STomoki Sekiyama *devminor = 0; 65446d4c572STomoki Sekiyama 65546d4c572STomoki Sekiyama if (stat(devpath, &st) < 0) { 65646d4c572STomoki Sekiyama slog("failed to stat device file '%s': %s", devpath, strerror(errno)); 65746d4c572STomoki Sekiyama return -1; 65846d4c572STomoki Sekiyama } 65946d4c572STomoki Sekiyama if (S_ISDIR(st.st_mode)) { 66046d4c572STomoki Sekiyama /* It is bind mount */ 66146d4c572STomoki Sekiyama return -2; 66246d4c572STomoki Sekiyama } 66346d4c572STomoki Sekiyama if (S_ISBLK(st.st_mode)) { 66446d4c572STomoki Sekiyama *devmajor = major(st.st_rdev); 66546d4c572STomoki Sekiyama *devminor = minor(st.st_rdev); 66646d4c572STomoki Sekiyama return 0; 66746d4c572STomoki Sekiyama } 66846d4c572STomoki Sekiyama return -1; 66946d4c572STomoki Sekiyama } 67046d4c572STomoki Sekiyama 6719e8aded4SMichael Roth /* 6729e8aded4SMichael Roth * Walk the mount table and build a list of local file systems 6739e8aded4SMichael Roth */ 67446d4c572STomoki Sekiyama static void build_fs_mount_list_from_mtab(FsMountList *mounts, Error **errp) 6759e8aded4SMichael Roth { 6769e8aded4SMichael Roth struct mntent *ment; 677af02203fSPaolo Bonzini FsMount *mount; 6789e2fa418SMichael Roth char const *mtab = "/proc/self/mounts"; 6799e8aded4SMichael Roth FILE *fp; 68046d4c572STomoki Sekiyama unsigned int devmajor, devminor; 681c216e5adSMichael Roth 682c216e5adSMichael Roth fp = setmntent(mtab, "r"); 683c216e5adSMichael Roth if (!fp) { 68477dbc81bSMarkus Armbruster error_setg(errp, "failed to open mtab file: '%s'", mtab); 685261551d1SLuiz Capitulino return; 686c216e5adSMichael Roth } 687c216e5adSMichael Roth 688c216e5adSMichael Roth while ((ment = getmntent(fp))) { 689c216e5adSMichael Roth /* 690c216e5adSMichael Roth * An entry which device name doesn't start with a '/' is 691c216e5adSMichael Roth * either a dummy file system or a network file system. 692c216e5adSMichael Roth * Add special handling for smbfs and cifs as is done by 693c216e5adSMichael Roth * coreutils as well. 694c216e5adSMichael Roth */ 695c216e5adSMichael Roth if ((ment->mnt_fsname[0] != '/') || 696c216e5adSMichael Roth (strcmp(ment->mnt_type, "smbfs") == 0) || 697c216e5adSMichael Roth (strcmp(ment->mnt_type, "cifs") == 0)) { 698c216e5adSMichael Roth continue; 699c216e5adSMichael Roth } 70046d4c572STomoki Sekiyama if (dev_major_minor(ment->mnt_fsname, &devmajor, &devminor) == -2) { 70146d4c572STomoki Sekiyama /* Skip bind mounts */ 70246d4c572STomoki Sekiyama continue; 70346d4c572STomoki Sekiyama } 704c216e5adSMichael Roth 705f3a06403SMarkus Armbruster mount = g_new0(FsMount, 1); 706c216e5adSMichael Roth mount->dirname = g_strdup(ment->mnt_dir); 707c216e5adSMichael Roth mount->devtype = g_strdup(ment->mnt_type); 70846d4c572STomoki Sekiyama mount->devmajor = devmajor; 70946d4c572STomoki Sekiyama mount->devminor = devminor; 710c216e5adSMichael Roth 7119e8aded4SMichael Roth QTAILQ_INSERT_TAIL(mounts, mount, next); 712c216e5adSMichael Roth } 713c216e5adSMichael Roth 714c216e5adSMichael Roth endmntent(fp); 715c216e5adSMichael Roth } 71646d4c572STomoki Sekiyama 71746d4c572STomoki Sekiyama static void decode_mntname(char *name, int len) 71846d4c572STomoki Sekiyama { 71946d4c572STomoki Sekiyama int i, j = 0; 72046d4c572STomoki Sekiyama for (i = 0; i <= len; i++) { 72146d4c572STomoki Sekiyama if (name[i] != '\\') { 72246d4c572STomoki Sekiyama name[j++] = name[i]; 72346d4c572STomoki Sekiyama } else if (name[i + 1] == '\\') { 72446d4c572STomoki Sekiyama name[j++] = '\\'; 72546d4c572STomoki Sekiyama i++; 72646d4c572STomoki Sekiyama } else if (name[i + 1] >= '0' && name[i + 1] <= '3' && 72746d4c572STomoki Sekiyama name[i + 2] >= '0' && name[i + 2] <= '7' && 72846d4c572STomoki Sekiyama name[i + 3] >= '0' && name[i + 3] <= '7') { 72946d4c572STomoki Sekiyama name[j++] = (name[i + 1] - '0') * 64 + 73046d4c572STomoki Sekiyama (name[i + 2] - '0') * 8 + 73146d4c572STomoki Sekiyama (name[i + 3] - '0'); 73246d4c572STomoki Sekiyama i += 3; 73346d4c572STomoki Sekiyama } else { 73446d4c572STomoki Sekiyama name[j++] = name[i]; 73546d4c572STomoki Sekiyama } 73646d4c572STomoki Sekiyama } 73746d4c572STomoki Sekiyama } 73846d4c572STomoki Sekiyama 73946d4c572STomoki Sekiyama static void build_fs_mount_list(FsMountList *mounts, Error **errp) 74046d4c572STomoki Sekiyama { 74146d4c572STomoki Sekiyama FsMount *mount; 74246d4c572STomoki Sekiyama char const *mountinfo = "/proc/self/mountinfo"; 74346d4c572STomoki Sekiyama FILE *fp; 74446d4c572STomoki Sekiyama char *line = NULL, *dash; 74546d4c572STomoki Sekiyama size_t n; 74646d4c572STomoki Sekiyama char check; 74746d4c572STomoki Sekiyama unsigned int devmajor, devminor; 74846d4c572STomoki Sekiyama int ret, dir_s, dir_e, type_s, type_e, dev_s, dev_e; 74946d4c572STomoki Sekiyama 75046d4c572STomoki Sekiyama fp = fopen(mountinfo, "r"); 75146d4c572STomoki Sekiyama if (!fp) { 75246d4c572STomoki Sekiyama build_fs_mount_list_from_mtab(mounts, errp); 75346d4c572STomoki Sekiyama return; 75446d4c572STomoki Sekiyama } 75546d4c572STomoki Sekiyama 75646d4c572STomoki Sekiyama while (getline(&line, &n, fp) != -1) { 75746d4c572STomoki Sekiyama ret = sscanf(line, "%*u %*u %u:%u %*s %n%*s%n%c", 75846d4c572STomoki Sekiyama &devmajor, &devminor, &dir_s, &dir_e, &check); 75946d4c572STomoki Sekiyama if (ret < 3) { 76046d4c572STomoki Sekiyama continue; 76146d4c572STomoki Sekiyama } 76246d4c572STomoki Sekiyama dash = strstr(line + dir_e, " - "); 76346d4c572STomoki Sekiyama if (!dash) { 76446d4c572STomoki Sekiyama continue; 76546d4c572STomoki Sekiyama } 76646d4c572STomoki Sekiyama ret = sscanf(dash, " - %n%*s%n %n%*s%n%c", 76746d4c572STomoki Sekiyama &type_s, &type_e, &dev_s, &dev_e, &check); 76846d4c572STomoki Sekiyama if (ret < 1) { 76946d4c572STomoki Sekiyama continue; 77046d4c572STomoki Sekiyama } 77146d4c572STomoki Sekiyama line[dir_e] = 0; 77246d4c572STomoki Sekiyama dash[type_e] = 0; 77346d4c572STomoki Sekiyama dash[dev_e] = 0; 77446d4c572STomoki Sekiyama decode_mntname(line + dir_s, dir_e - dir_s); 77546d4c572STomoki Sekiyama decode_mntname(dash + dev_s, dev_e - dev_s); 77646d4c572STomoki Sekiyama if (devmajor == 0) { 77746d4c572STomoki Sekiyama /* btrfs reports major number = 0 */ 77846d4c572STomoki Sekiyama if (strcmp("btrfs", dash + type_s) != 0 || 77946d4c572STomoki Sekiyama dev_major_minor(dash + dev_s, &devmajor, &devminor) < 0) { 78046d4c572STomoki Sekiyama continue; 78146d4c572STomoki Sekiyama } 78246d4c572STomoki Sekiyama } 78346d4c572STomoki Sekiyama 784f3a06403SMarkus Armbruster mount = g_new0(FsMount, 1); 78546d4c572STomoki Sekiyama mount->dirname = g_strdup(line + dir_s); 78646d4c572STomoki Sekiyama mount->devtype = g_strdup(dash + type_s); 78746d4c572STomoki Sekiyama mount->devmajor = devmajor; 78846d4c572STomoki Sekiyama mount->devminor = devminor; 78946d4c572STomoki Sekiyama 79046d4c572STomoki Sekiyama QTAILQ_INSERT_TAIL(mounts, mount, next); 79146d4c572STomoki Sekiyama } 79246d4c572STomoki Sekiyama free(line); 79346d4c572STomoki Sekiyama 79446d4c572STomoki Sekiyama fclose(fp); 79546d4c572STomoki Sekiyama } 796eab5fd59SPaolo Bonzini #endif 797eab5fd59SPaolo Bonzini 798eab5fd59SPaolo Bonzini #if defined(CONFIG_FSFREEZE) 799c216e5adSMichael Roth 80046d4c572STomoki Sekiyama static char *get_pci_driver(char const *syspath, int pathlen, Error **errp) 80146d4c572STomoki Sekiyama { 80246d4c572STomoki Sekiyama char *path; 80346d4c572STomoki Sekiyama char *dpath; 80446d4c572STomoki Sekiyama char *driver = NULL; 80546d4c572STomoki Sekiyama char buf[PATH_MAX]; 80646d4c572STomoki Sekiyama ssize_t len; 80746d4c572STomoki Sekiyama 80846d4c572STomoki Sekiyama path = g_strndup(syspath, pathlen); 80946d4c572STomoki Sekiyama dpath = g_strdup_printf("%s/driver", path); 81046d4c572STomoki Sekiyama len = readlink(dpath, buf, sizeof(buf) - 1); 81146d4c572STomoki Sekiyama if (len != -1) { 81246d4c572STomoki Sekiyama buf[len] = 0; 8133e015d81SJulia Suvorova driver = g_path_get_basename(buf); 81446d4c572STomoki Sekiyama } 81546d4c572STomoki Sekiyama g_free(dpath); 81646d4c572STomoki Sekiyama g_free(path); 81746d4c572STomoki Sekiyama return driver; 81846d4c572STomoki Sekiyama } 81946d4c572STomoki Sekiyama 82046d4c572STomoki Sekiyama static int compare_uint(const void *_a, const void *_b) 82146d4c572STomoki Sekiyama { 82246d4c572STomoki Sekiyama unsigned int a = *(unsigned int *)_a; 82346d4c572STomoki Sekiyama unsigned int b = *(unsigned int *)_b; 82446d4c572STomoki Sekiyama 82546d4c572STomoki Sekiyama return a < b ? -1 : a > b ? 1 : 0; 82646d4c572STomoki Sekiyama } 82746d4c572STomoki Sekiyama 82846d4c572STomoki Sekiyama /* Walk the specified sysfs and build a sorted list of host or ata numbers */ 82946d4c572STomoki Sekiyama static int build_hosts(char const *syspath, char const *host, bool ata, 83046d4c572STomoki Sekiyama unsigned int *hosts, int hosts_max, Error **errp) 83146d4c572STomoki Sekiyama { 83246d4c572STomoki Sekiyama char *path; 83346d4c572STomoki Sekiyama DIR *dir; 83446d4c572STomoki Sekiyama struct dirent *entry; 83546d4c572STomoki Sekiyama int i = 0; 83646d4c572STomoki Sekiyama 83746d4c572STomoki Sekiyama path = g_strndup(syspath, host - syspath); 83846d4c572STomoki Sekiyama dir = opendir(path); 83946d4c572STomoki Sekiyama if (!dir) { 84046d4c572STomoki Sekiyama error_setg_errno(errp, errno, "opendir(\"%s\")", path); 84146d4c572STomoki Sekiyama g_free(path); 84246d4c572STomoki Sekiyama return -1; 84346d4c572STomoki Sekiyama } 84446d4c572STomoki Sekiyama 84546d4c572STomoki Sekiyama while (i < hosts_max) { 84646d4c572STomoki Sekiyama entry = readdir(dir); 84746d4c572STomoki Sekiyama if (!entry) { 84846d4c572STomoki Sekiyama break; 84946d4c572STomoki Sekiyama } 85046d4c572STomoki Sekiyama if (ata && sscanf(entry->d_name, "ata%d", hosts + i) == 1) { 85146d4c572STomoki Sekiyama ++i; 85246d4c572STomoki Sekiyama } else if (!ata && sscanf(entry->d_name, "host%d", hosts + i) == 1) { 85346d4c572STomoki Sekiyama ++i; 85446d4c572STomoki Sekiyama } 85546d4c572STomoki Sekiyama } 85646d4c572STomoki Sekiyama 85746d4c572STomoki Sekiyama qsort(hosts, i, sizeof(hosts[0]), compare_uint); 85846d4c572STomoki Sekiyama 85946d4c572STomoki Sekiyama g_free(path); 86046d4c572STomoki Sekiyama closedir(dir); 86146d4c572STomoki Sekiyama return i; 86246d4c572STomoki Sekiyama } 86346d4c572STomoki Sekiyama 864d9fe4f0fSThomas Huth /* 865d9fe4f0fSThomas Huth * Store disk device info for devices on the PCI bus. 866d9fe4f0fSThomas Huth * Returns true if information has been stored, or false for failure. 867d9fe4f0fSThomas Huth */ 868d9fe4f0fSThomas Huth static bool build_guest_fsinfo_for_pci_dev(char const *syspath, 869d9fe4f0fSThomas Huth GuestDiskAddress *disk, 87046d4c572STomoki Sekiyama Error **errp) 87146d4c572STomoki Sekiyama { 87246d4c572STomoki Sekiyama unsigned int pci[4], host, hosts[8], tgt[3]; 87346d4c572STomoki Sekiyama int i, nhosts = 0, pcilen; 874d9fe4f0fSThomas Huth GuestPCIAddress *pciaddr = disk->pci_controller; 87546d4c572STomoki Sekiyama bool has_ata = false, has_host = false, has_tgt = false; 87646d4c572STomoki Sekiyama char *p, *q, *driver = NULL; 877d9fe4f0fSThomas Huth bool ret = false; 87846d4c572STomoki Sekiyama 87946d4c572STomoki Sekiyama p = strstr(syspath, "/devices/pci"); 88046d4c572STomoki Sekiyama if (!p || sscanf(p + 12, "%*x:%*x/%x:%x:%x.%x%n", 88146d4c572STomoki Sekiyama pci, pci + 1, pci + 2, pci + 3, &pcilen) < 4) { 882743c71d0SMarc-André Lureau g_debug("only pci device is supported: sysfs path '%s'", syspath); 883d9fe4f0fSThomas Huth return false; 88446d4c572STomoki Sekiyama } 88546d4c572STomoki Sekiyama 886743c71d0SMarc-André Lureau p += 12 + pcilen; 887743c71d0SMarc-André Lureau while (true) { 888743c71d0SMarc-André Lureau driver = get_pci_driver(syspath, p - syspath, errp); 889743c71d0SMarc-André Lureau if (driver && (g_str_equal(driver, "ata_piix") || 890743c71d0SMarc-André Lureau g_str_equal(driver, "sym53c8xx") || 891743c71d0SMarc-André Lureau g_str_equal(driver, "virtio-pci") || 892743c71d0SMarc-André Lureau g_str_equal(driver, "ahci"))) { 893743c71d0SMarc-André Lureau break; 894743c71d0SMarc-André Lureau } 895743c71d0SMarc-André Lureau 896bb23a736SMarc-André Lureau g_free(driver); 897743c71d0SMarc-André Lureau if (sscanf(p, "/%x:%x:%x.%x%n", 898743c71d0SMarc-André Lureau pci, pci + 1, pci + 2, pci + 3, &pcilen) == 4) { 899743c71d0SMarc-André Lureau p += pcilen; 900743c71d0SMarc-André Lureau continue; 901743c71d0SMarc-André Lureau } 902743c71d0SMarc-André Lureau 903743c71d0SMarc-André Lureau g_debug("unsupported driver or sysfs path '%s'", syspath); 904d9fe4f0fSThomas Huth return false; 90546d4c572STomoki Sekiyama } 90646d4c572STomoki Sekiyama 90746d4c572STomoki Sekiyama p = strstr(syspath, "/target"); 90846d4c572STomoki Sekiyama if (p && sscanf(p + 7, "%*u:%*u:%*u/%*u:%u:%u:%u", 90946d4c572STomoki Sekiyama tgt, tgt + 1, tgt + 2) == 3) { 91046d4c572STomoki Sekiyama has_tgt = true; 91146d4c572STomoki Sekiyama } 91246d4c572STomoki Sekiyama 91346d4c572STomoki Sekiyama p = strstr(syspath, "/ata"); 91446d4c572STomoki Sekiyama if (p) { 91546d4c572STomoki Sekiyama q = p + 4; 91646d4c572STomoki Sekiyama has_ata = true; 91746d4c572STomoki Sekiyama } else { 91846d4c572STomoki Sekiyama p = strstr(syspath, "/host"); 91946d4c572STomoki Sekiyama q = p + 5; 92046d4c572STomoki Sekiyama } 92146d4c572STomoki Sekiyama if (p && sscanf(q, "%u", &host) == 1) { 92246d4c572STomoki Sekiyama has_host = true; 92346d4c572STomoki Sekiyama nhosts = build_hosts(syspath, p, has_ata, hosts, 92401a6df1bSPhilippe Mathieu-Daudé ARRAY_SIZE(hosts), errp); 92546d4c572STomoki Sekiyama if (nhosts < 0) { 92646d4c572STomoki Sekiyama goto cleanup; 92746d4c572STomoki Sekiyama } 92846d4c572STomoki Sekiyama } 92946d4c572STomoki Sekiyama 93046d4c572STomoki Sekiyama pciaddr->domain = pci[0]; 93146d4c572STomoki Sekiyama pciaddr->bus = pci[1]; 93246d4c572STomoki Sekiyama pciaddr->slot = pci[2]; 93346d4c572STomoki Sekiyama pciaddr->function = pci[3]; 93446d4c572STomoki Sekiyama 93546d4c572STomoki Sekiyama if (strcmp(driver, "ata_piix") == 0) { 93646d4c572STomoki Sekiyama /* a host per ide bus, target*:0:<unit>:0 */ 93746d4c572STomoki Sekiyama if (!has_host || !has_tgt) { 93846d4c572STomoki Sekiyama g_debug("invalid sysfs path '%s' (driver '%s')", syspath, driver); 93946d4c572STomoki Sekiyama goto cleanup; 94046d4c572STomoki Sekiyama } 94146d4c572STomoki Sekiyama for (i = 0; i < nhosts; i++) { 94246d4c572STomoki Sekiyama if (host == hosts[i]) { 94346d4c572STomoki Sekiyama disk->bus_type = GUEST_DISK_BUS_TYPE_IDE; 94446d4c572STomoki Sekiyama disk->bus = i; 94546d4c572STomoki Sekiyama disk->unit = tgt[1]; 94646d4c572STomoki Sekiyama break; 94746d4c572STomoki Sekiyama } 94846d4c572STomoki Sekiyama } 94946d4c572STomoki Sekiyama if (i >= nhosts) { 95046d4c572STomoki Sekiyama g_debug("no host for '%s' (driver '%s')", syspath, driver); 95146d4c572STomoki Sekiyama goto cleanup; 95246d4c572STomoki Sekiyama } 95346d4c572STomoki Sekiyama } else if (strcmp(driver, "sym53c8xx") == 0) { 95446d4c572STomoki Sekiyama /* scsi(LSI Logic): target*:0:<unit>:0 */ 95546d4c572STomoki Sekiyama if (!has_tgt) { 95646d4c572STomoki Sekiyama g_debug("invalid sysfs path '%s' (driver '%s')", syspath, driver); 95746d4c572STomoki Sekiyama goto cleanup; 95846d4c572STomoki Sekiyama } 95946d4c572STomoki Sekiyama disk->bus_type = GUEST_DISK_BUS_TYPE_SCSI; 96046d4c572STomoki Sekiyama disk->unit = tgt[1]; 96146d4c572STomoki Sekiyama } else if (strcmp(driver, "virtio-pci") == 0) { 96246d4c572STomoki Sekiyama if (has_tgt) { 96346d4c572STomoki Sekiyama /* virtio-scsi: target*:0:0:<unit> */ 96446d4c572STomoki Sekiyama disk->bus_type = GUEST_DISK_BUS_TYPE_SCSI; 96546d4c572STomoki Sekiyama disk->unit = tgt[2]; 96646d4c572STomoki Sekiyama } else { 96746d4c572STomoki Sekiyama /* virtio-blk: 1 disk per 1 device */ 96846d4c572STomoki Sekiyama disk->bus_type = GUEST_DISK_BUS_TYPE_VIRTIO; 96946d4c572STomoki Sekiyama } 97046d4c572STomoki Sekiyama } else if (strcmp(driver, "ahci") == 0) { 97146d4c572STomoki Sekiyama /* ahci: 1 host per 1 unit */ 97246d4c572STomoki Sekiyama if (!has_host || !has_tgt) { 97346d4c572STomoki Sekiyama g_debug("invalid sysfs path '%s' (driver '%s')", syspath, driver); 97446d4c572STomoki Sekiyama goto cleanup; 97546d4c572STomoki Sekiyama } 97646d4c572STomoki Sekiyama for (i = 0; i < nhosts; i++) { 97746d4c572STomoki Sekiyama if (host == hosts[i]) { 97846d4c572STomoki Sekiyama disk->unit = i; 97946d4c572STomoki Sekiyama disk->bus_type = GUEST_DISK_BUS_TYPE_SATA; 98046d4c572STomoki Sekiyama break; 98146d4c572STomoki Sekiyama } 98246d4c572STomoki Sekiyama } 98346d4c572STomoki Sekiyama if (i >= nhosts) { 98446d4c572STomoki Sekiyama g_debug("no host for '%s' (driver '%s')", syspath, driver); 98546d4c572STomoki Sekiyama goto cleanup; 98646d4c572STomoki Sekiyama } 98746d4c572STomoki Sekiyama } else { 98846d4c572STomoki Sekiyama g_debug("unknown driver '%s' (sysfs path '%s')", driver, syspath); 98946d4c572STomoki Sekiyama goto cleanup; 99046d4c572STomoki Sekiyama } 99146d4c572STomoki Sekiyama 992d9fe4f0fSThomas Huth ret = true; 99346d4c572STomoki Sekiyama 99446d4c572STomoki Sekiyama cleanup: 99546d4c572STomoki Sekiyama g_free(driver); 996d9fe4f0fSThomas Huth return ret; 997d9fe4f0fSThomas Huth } 998d9fe4f0fSThomas Huth 99923843c12SThomas Huth /* 100023843c12SThomas Huth * Store disk device info for non-PCI virtio devices (for example s390x 100123843c12SThomas Huth * channel I/O devices). Returns true if information has been stored, or 100223843c12SThomas Huth * false for failure. 100323843c12SThomas Huth */ 100423843c12SThomas Huth static bool build_guest_fsinfo_for_nonpci_virtio(char const *syspath, 100523843c12SThomas Huth GuestDiskAddress *disk, 100623843c12SThomas Huth Error **errp) 100723843c12SThomas Huth { 100823843c12SThomas Huth unsigned int tgt[3]; 100923843c12SThomas Huth char *p; 101023843c12SThomas Huth 101123843c12SThomas Huth if (!strstr(syspath, "/virtio") || !strstr(syspath, "/block")) { 101223843c12SThomas Huth g_debug("Unsupported virtio device '%s'", syspath); 101323843c12SThomas Huth return false; 101423843c12SThomas Huth } 101523843c12SThomas Huth 101623843c12SThomas Huth p = strstr(syspath, "/target"); 101723843c12SThomas Huth if (p && sscanf(p + 7, "%*u:%*u:%*u/%*u:%u:%u:%u", 101823843c12SThomas Huth &tgt[0], &tgt[1], &tgt[2]) == 3) { 101923843c12SThomas Huth /* virtio-scsi: target*:0:<target>:<unit> */ 102023843c12SThomas Huth disk->bus_type = GUEST_DISK_BUS_TYPE_SCSI; 102123843c12SThomas Huth disk->bus = tgt[0]; 102223843c12SThomas Huth disk->target = tgt[1]; 102323843c12SThomas Huth disk->unit = tgt[2]; 102423843c12SThomas Huth } else { 102523843c12SThomas Huth /* virtio-blk: 1 disk per 1 device */ 102623843c12SThomas Huth disk->bus_type = GUEST_DISK_BUS_TYPE_VIRTIO; 102723843c12SThomas Huth } 102823843c12SThomas Huth 102923843c12SThomas Huth return true; 103023843c12SThomas Huth } 103123843c12SThomas Huth 10325b723a5dSThomas Huth /* 10335b723a5dSThomas Huth * Store disk device info for CCW devices (s390x channel I/O devices). 10345b723a5dSThomas Huth * Returns true if information has been stored, or false for failure. 10355b723a5dSThomas Huth */ 10365b723a5dSThomas Huth static bool build_guest_fsinfo_for_ccw_dev(char const *syspath, 10375b723a5dSThomas Huth GuestDiskAddress *disk, 10385b723a5dSThomas Huth Error **errp) 10395b723a5dSThomas Huth { 10405b723a5dSThomas Huth unsigned int cssid, ssid, subchno, devno; 10415b723a5dSThomas Huth char *p; 10425b723a5dSThomas Huth 10435b723a5dSThomas Huth p = strstr(syspath, "/devices/css"); 10445b723a5dSThomas Huth if (!p || sscanf(p + 12, "%*x/%x.%x.%x/%*x.%*x.%x/", 10455b723a5dSThomas Huth &cssid, &ssid, &subchno, &devno) < 4) { 10465b723a5dSThomas Huth g_debug("could not parse ccw device sysfs path: %s", syspath); 10475b723a5dSThomas Huth return false; 10485b723a5dSThomas Huth } 10495b723a5dSThomas Huth 10505b723a5dSThomas Huth disk->has_ccw_address = true; 10515b723a5dSThomas Huth disk->ccw_address = g_new0(GuestCCWAddress, 1); 10525b723a5dSThomas Huth disk->ccw_address->cssid = cssid; 10535b723a5dSThomas Huth disk->ccw_address->ssid = ssid; 10545b723a5dSThomas Huth disk->ccw_address->subchno = subchno; 10555b723a5dSThomas Huth disk->ccw_address->devno = devno; 10565b723a5dSThomas Huth 10575b723a5dSThomas Huth if (strstr(p, "/virtio")) { 10585b723a5dSThomas Huth build_guest_fsinfo_for_nonpci_virtio(syspath, disk, errp); 10595b723a5dSThomas Huth } 10605b723a5dSThomas Huth 10615b723a5dSThomas Huth return true; 10625b723a5dSThomas Huth } 10635b723a5dSThomas Huth 1064d9fe4f0fSThomas Huth /* Store disk device info specified by @sysfs into @fs */ 1065d9fe4f0fSThomas Huth static void build_guest_fsinfo_for_real_device(char const *syspath, 1066d9fe4f0fSThomas Huth GuestFilesystemInfo *fs, 1067d9fe4f0fSThomas Huth Error **errp) 1068d9fe4f0fSThomas Huth { 1069d9fe4f0fSThomas Huth GuestDiskAddress *disk; 1070d9fe4f0fSThomas Huth GuestPCIAddress *pciaddr; 1071d9fe4f0fSThomas Huth bool has_hwinf; 107243dadc43SThomas Huth #ifdef CONFIG_LIBUDEV 107343dadc43SThomas Huth struct udev *udev = NULL; 107443dadc43SThomas Huth struct udev_device *udevice = NULL; 107543dadc43SThomas Huth #endif 1076d9fe4f0fSThomas Huth 1077d9fe4f0fSThomas Huth pciaddr = g_new0(GuestPCIAddress, 1); 107843dadc43SThomas Huth pciaddr->domain = -1; /* -1 means field is invalid */ 107943dadc43SThomas Huth pciaddr->bus = -1; 108043dadc43SThomas Huth pciaddr->slot = -1; 108143dadc43SThomas Huth pciaddr->function = -1; 1082d9fe4f0fSThomas Huth 1083d9fe4f0fSThomas Huth disk = g_new0(GuestDiskAddress, 1); 1084d9fe4f0fSThomas Huth disk->pci_controller = pciaddr; 108543dadc43SThomas Huth disk->bus_type = GUEST_DISK_BUS_TYPE_UNKNOWN; 1086d9fe4f0fSThomas Huth 108743dadc43SThomas Huth #ifdef CONFIG_LIBUDEV 108843dadc43SThomas Huth udev = udev_new(); 108943dadc43SThomas Huth udevice = udev_device_new_from_syspath(udev, syspath); 109043dadc43SThomas Huth if (udev == NULL || udevice == NULL) { 109143dadc43SThomas Huth g_debug("failed to query udev"); 109243dadc43SThomas Huth } else { 109343dadc43SThomas Huth const char *devnode, *serial; 109443dadc43SThomas Huth devnode = udev_device_get_devnode(udevice); 109543dadc43SThomas Huth if (devnode != NULL) { 109643dadc43SThomas Huth disk->dev = g_strdup(devnode); 109743dadc43SThomas Huth disk->has_dev = true; 109843dadc43SThomas Huth } 109943dadc43SThomas Huth serial = udev_device_get_property_value(udevice, "ID_SERIAL"); 110043dadc43SThomas Huth if (serial != NULL && *serial != 0) { 110143dadc43SThomas Huth disk->serial = g_strdup(serial); 110243dadc43SThomas Huth disk->has_serial = true; 110343dadc43SThomas Huth } 110443dadc43SThomas Huth } 110543dadc43SThomas Huth 110643dadc43SThomas Huth udev_unref(udev); 110743dadc43SThomas Huth udev_device_unref(udevice); 110843dadc43SThomas Huth #endif 110943dadc43SThomas Huth 111023843c12SThomas Huth if (strstr(syspath, "/devices/pci")) { 1111d9fe4f0fSThomas Huth has_hwinf = build_guest_fsinfo_for_pci_dev(syspath, disk, errp); 11125b723a5dSThomas Huth } else if (strstr(syspath, "/devices/css")) { 11135b723a5dSThomas Huth has_hwinf = build_guest_fsinfo_for_ccw_dev(syspath, disk, errp); 111423843c12SThomas Huth } else if (strstr(syspath, "/virtio")) { 111523843c12SThomas Huth has_hwinf = build_guest_fsinfo_for_nonpci_virtio(syspath, disk, errp); 111623843c12SThomas Huth } else { 111723843c12SThomas Huth g_debug("Unsupported device type for '%s'", syspath); 111823843c12SThomas Huth has_hwinf = false; 111923843c12SThomas Huth } 1120d9fe4f0fSThomas Huth 112143dadc43SThomas Huth if (has_hwinf || disk->has_dev || disk->has_serial) { 112254aa3de7SEric Blake QAPI_LIST_PREPEND(fs->disk, disk); 1123d9fe4f0fSThomas Huth } else { 112454aa3de7SEric Blake qapi_free_GuestDiskAddress(disk); 1125d9fe4f0fSThomas Huth } 112646d4c572STomoki Sekiyama } 112746d4c572STomoki Sekiyama 112846d4c572STomoki Sekiyama static void build_guest_fsinfo_for_device(char const *devpath, 112946d4c572STomoki Sekiyama GuestFilesystemInfo *fs, 113046d4c572STomoki Sekiyama Error **errp); 113146d4c572STomoki Sekiyama 113246d4c572STomoki Sekiyama /* Store a list of slave devices of virtual volume specified by @syspath into 113346d4c572STomoki Sekiyama * @fs */ 113446d4c572STomoki Sekiyama static void build_guest_fsinfo_for_virtual_device(char const *syspath, 113546d4c572STomoki Sekiyama GuestFilesystemInfo *fs, 113646d4c572STomoki Sekiyama Error **errp) 113746d4c572STomoki Sekiyama { 1138292743d9SMarkus Armbruster Error *err = NULL; 113946d4c572STomoki Sekiyama DIR *dir; 114046d4c572STomoki Sekiyama char *dirpath; 1141e668d1b8Szhanghailiang struct dirent *entry; 114246d4c572STomoki Sekiyama 114346d4c572STomoki Sekiyama dirpath = g_strdup_printf("%s/slaves", syspath); 114446d4c572STomoki Sekiyama dir = opendir(dirpath); 114546d4c572STomoki Sekiyama if (!dir) { 11468251a72fSMichael Roth if (errno != ENOENT) { 114746d4c572STomoki Sekiyama error_setg_errno(errp, errno, "opendir(\"%s\")", dirpath); 11488251a72fSMichael Roth } 114946d4c572STomoki Sekiyama g_free(dirpath); 115046d4c572STomoki Sekiyama return; 115146d4c572STomoki Sekiyama } 115246d4c572STomoki Sekiyama 115346d4c572STomoki Sekiyama for (;;) { 1154e668d1b8Szhanghailiang errno = 0; 1155e668d1b8Szhanghailiang entry = readdir(dir); 1156e668d1b8Szhanghailiang if (entry == NULL) { 1157e668d1b8Szhanghailiang if (errno) { 1158e668d1b8Szhanghailiang error_setg_errno(errp, errno, "readdir(\"%s\")", dirpath); 115946d4c572STomoki Sekiyama } 116046d4c572STomoki Sekiyama break; 116146d4c572STomoki Sekiyama } 116246d4c572STomoki Sekiyama 1163e668d1b8Szhanghailiang if (entry->d_type == DT_LNK) { 1164e668d1b8Szhanghailiang char *path; 1165e668d1b8Szhanghailiang 1166e668d1b8Szhanghailiang g_debug(" slave device '%s'", entry->d_name); 1167e668d1b8Szhanghailiang path = g_strdup_printf("%s/slaves/%s", syspath, entry->d_name); 1168292743d9SMarkus Armbruster build_guest_fsinfo_for_device(path, fs, &err); 1169e668d1b8Szhanghailiang g_free(path); 117046d4c572STomoki Sekiyama 1171292743d9SMarkus Armbruster if (err) { 1172292743d9SMarkus Armbruster error_propagate(errp, err); 117346d4c572STomoki Sekiyama break; 117446d4c572STomoki Sekiyama } 117546d4c572STomoki Sekiyama } 117646d4c572STomoki Sekiyama } 117746d4c572STomoki Sekiyama 1178e668d1b8Szhanghailiang g_free(dirpath); 117946d4c572STomoki Sekiyama closedir(dir); 118046d4c572STomoki Sekiyama } 118146d4c572STomoki Sekiyama 1182fed39564STomáš Golembiovský static bool is_disk_virtual(const char *devpath, Error **errp) 1183fed39564STomáš Golembiovský { 1184fed39564STomáš Golembiovský g_autofree char *syspath = realpath(devpath, NULL); 1185fed39564STomáš Golembiovský 1186fed39564STomáš Golembiovský if (!syspath) { 1187fed39564STomáš Golembiovský error_setg_errno(errp, errno, "realpath(\"%s\")", devpath); 1188fed39564STomáš Golembiovský return false; 1189fed39564STomáš Golembiovský } 1190fed39564STomáš Golembiovský return strstr(syspath, "/devices/virtual/block/") != NULL; 1191fed39564STomáš Golembiovský } 1192fed39564STomáš Golembiovský 119346d4c572STomoki Sekiyama /* Dispatch to functions for virtual/real device */ 119446d4c572STomoki Sekiyama static void build_guest_fsinfo_for_device(char const *devpath, 119546d4c572STomoki Sekiyama GuestFilesystemInfo *fs, 119646d4c572STomoki Sekiyama Error **errp) 119746d4c572STomoki Sekiyama { 1198fed39564STomáš Golembiovský ERRP_GUARD(); 1199fed39564STomáš Golembiovský g_autofree char *syspath = NULL; 1200fed39564STomáš Golembiovský bool is_virtual = false; 120146d4c572STomoki Sekiyama 1202fed39564STomáš Golembiovský syspath = realpath(devpath, NULL); 120346d4c572STomoki Sekiyama if (!syspath) { 120446d4c572STomoki Sekiyama error_setg_errno(errp, errno, "realpath(\"%s\")", devpath); 120546d4c572STomoki Sekiyama return; 120646d4c572STomoki Sekiyama } 120746d4c572STomoki Sekiyama 120846d4c572STomoki Sekiyama if (!fs->name) { 12093e015d81SJulia Suvorova fs->name = g_path_get_basename(syspath); 121046d4c572STomoki Sekiyama } 121146d4c572STomoki Sekiyama 121246d4c572STomoki Sekiyama g_debug(" parse sysfs path '%s'", syspath); 1213fed39564STomáš Golembiovský is_virtual = is_disk_virtual(syspath, errp); 1214fed39564STomáš Golembiovský if (*errp != NULL) { 1215fed39564STomáš Golembiovský return; 1216fed39564STomáš Golembiovský } 1217fed39564STomáš Golembiovský if (is_virtual) { 121846d4c572STomoki Sekiyama build_guest_fsinfo_for_virtual_device(syspath, fs, errp); 121946d4c572STomoki Sekiyama } else { 122046d4c572STomoki Sekiyama build_guest_fsinfo_for_real_device(syspath, fs, errp); 122146d4c572STomoki Sekiyama } 122246d4c572STomoki Sekiyama } 122346d4c572STomoki Sekiyama 1224fed39564STomáš Golembiovský #ifdef CONFIG_LIBUDEV 1225fed39564STomáš Golembiovský 1226fed39564STomáš Golembiovský /* 1227fed39564STomáš Golembiovský * Wrapper around build_guest_fsinfo_for_device() for getting just 1228fed39564STomáš Golembiovský * the disk address. 1229fed39564STomáš Golembiovský */ 1230fed39564STomáš Golembiovský static GuestDiskAddress *get_disk_address(const char *syspath, Error **errp) 1231fed39564STomáš Golembiovský { 1232fed39564STomáš Golembiovský g_autoptr(GuestFilesystemInfo) fs = NULL; 1233fed39564STomáš Golembiovský 1234fed39564STomáš Golembiovský fs = g_new0(GuestFilesystemInfo, 1); 1235fed39564STomáš Golembiovský build_guest_fsinfo_for_device(syspath, fs, errp); 1236fed39564STomáš Golembiovský if (fs->disk != NULL) { 1237fed39564STomáš Golembiovský return g_steal_pointer(&fs->disk->value); 1238fed39564STomáš Golembiovský } 1239fed39564STomáš Golembiovský return NULL; 1240fed39564STomáš Golembiovský } 1241fed39564STomáš Golembiovský 1242fed39564STomáš Golembiovský static char *get_alias_for_syspath(const char *syspath) 1243fed39564STomáš Golembiovský { 1244fed39564STomáš Golembiovský struct udev *udev = NULL; 1245fed39564STomáš Golembiovský struct udev_device *udevice = NULL; 1246fed39564STomáš Golembiovský char *ret = NULL; 1247fed39564STomáš Golembiovský 1248fed39564STomáš Golembiovský udev = udev_new(); 1249fed39564STomáš Golembiovský if (udev == NULL) { 1250fed39564STomáš Golembiovský g_debug("failed to query udev"); 1251fed39564STomáš Golembiovský goto out; 1252fed39564STomáš Golembiovský } 1253fed39564STomáš Golembiovský udevice = udev_device_new_from_syspath(udev, syspath); 1254fed39564STomáš Golembiovský if (udevice == NULL) { 1255fed39564STomáš Golembiovský g_debug("failed to query udev for path: %s", syspath); 1256fed39564STomáš Golembiovský goto out; 1257fed39564STomáš Golembiovský } else { 1258fed39564STomáš Golembiovský const char *alias = udev_device_get_property_value( 1259fed39564STomáš Golembiovský udevice, "DM_NAME"); 1260fed39564STomáš Golembiovský /* 1261fed39564STomáš Golembiovský * NULL means there was an error and empty string means there is no 1262fed39564STomáš Golembiovský * alias. In case of no alias we return NULL instead of empty string. 1263fed39564STomáš Golembiovský */ 1264fed39564STomáš Golembiovský if (alias == NULL) { 1265fed39564STomáš Golembiovský g_debug("failed to query udev for device alias for: %s", 1266fed39564STomáš Golembiovský syspath); 1267fed39564STomáš Golembiovský } else if (*alias != 0) { 1268fed39564STomáš Golembiovský ret = g_strdup(alias); 1269fed39564STomáš Golembiovský } 1270fed39564STomáš Golembiovský } 1271fed39564STomáš Golembiovský 1272fed39564STomáš Golembiovský out: 1273fed39564STomáš Golembiovský udev_unref(udev); 1274fed39564STomáš Golembiovský udev_device_unref(udevice); 1275fed39564STomáš Golembiovský return ret; 1276fed39564STomáš Golembiovský } 1277fed39564STomáš Golembiovský 1278fed39564STomáš Golembiovský static char *get_device_for_syspath(const char *syspath) 1279fed39564STomáš Golembiovský { 1280fed39564STomáš Golembiovský struct udev *udev = NULL; 1281fed39564STomáš Golembiovský struct udev_device *udevice = NULL; 1282fed39564STomáš Golembiovský char *ret = NULL; 1283fed39564STomáš Golembiovský 1284fed39564STomáš Golembiovský udev = udev_new(); 1285fed39564STomáš Golembiovský if (udev == NULL) { 1286fed39564STomáš Golembiovský g_debug("failed to query udev"); 1287fed39564STomáš Golembiovský goto out; 1288fed39564STomáš Golembiovský } 1289fed39564STomáš Golembiovský udevice = udev_device_new_from_syspath(udev, syspath); 1290fed39564STomáš Golembiovský if (udevice == NULL) { 1291fed39564STomáš Golembiovský g_debug("failed to query udev for path: %s", syspath); 1292fed39564STomáš Golembiovský goto out; 1293fed39564STomáš Golembiovský } else { 1294fed39564STomáš Golembiovský ret = g_strdup(udev_device_get_devnode(udevice)); 1295fed39564STomáš Golembiovský } 1296fed39564STomáš Golembiovský 1297fed39564STomáš Golembiovský out: 1298fed39564STomáš Golembiovský udev_unref(udev); 1299fed39564STomáš Golembiovský udev_device_unref(udevice); 1300fed39564STomáš Golembiovský return ret; 1301fed39564STomáš Golembiovský } 1302fed39564STomáš Golembiovský 1303fed39564STomáš Golembiovský static void get_disk_deps(const char *disk_dir, GuestDiskInfo *disk) 1304fed39564STomáš Golembiovský { 1305fed39564STomáš Golembiovský g_autofree char *deps_dir = NULL; 1306fed39564STomáš Golembiovský const gchar *dep; 1307fed39564STomáš Golembiovský GDir *dp_deps = NULL; 1308fed39564STomáš Golembiovský 1309fed39564STomáš Golembiovský /* List dependent disks */ 1310fed39564STomáš Golembiovský deps_dir = g_strdup_printf("%s/slaves", disk_dir); 1311fed39564STomáš Golembiovský g_debug(" listing entries in: %s", deps_dir); 1312fed39564STomáš Golembiovský dp_deps = g_dir_open(deps_dir, 0, NULL); 1313fed39564STomáš Golembiovský if (dp_deps == NULL) { 1314fed39564STomáš Golembiovský g_debug("failed to list entries in %s", deps_dir); 1315fed39564STomáš Golembiovský return; 1316fed39564STomáš Golembiovský } 1317a8aa94b5SMichael Roth disk->has_dependencies = true; 1318fed39564STomáš Golembiovský while ((dep = g_dir_read_name(dp_deps)) != NULL) { 1319fed39564STomáš Golembiovský g_autofree char *dep_dir = NULL; 1320fed39564STomáš Golembiovský char *dev_name; 1321fed39564STomáš Golembiovský 1322fed39564STomáš Golembiovský /* Add dependent disks */ 1323fed39564STomáš Golembiovský dep_dir = g_strdup_printf("%s/%s", deps_dir, dep); 1324fed39564STomáš Golembiovský dev_name = get_device_for_syspath(dep_dir); 1325fed39564STomáš Golembiovský if (dev_name != NULL) { 1326fed39564STomáš Golembiovský g_debug(" adding dependent device: %s", dev_name); 132754aa3de7SEric Blake QAPI_LIST_PREPEND(disk->dependencies, dev_name); 1328fed39564STomáš Golembiovský } 1329fed39564STomáš Golembiovský } 1330fed39564STomáš Golembiovský g_dir_close(dp_deps); 1331fed39564STomáš Golembiovský } 1332fed39564STomáš Golembiovský 1333fed39564STomáš Golembiovský /* 1334fed39564STomáš Golembiovský * Detect partitions subdirectory, name is "<disk_name><number>" or 1335fed39564STomáš Golembiovský * "<disk_name>p<number>" 1336fed39564STomáš Golembiovský * 1337fed39564STomáš Golembiovský * @disk_name -- last component of /sys path (e.g. sda) 1338fed39564STomáš Golembiovský * @disk_dir -- sys path of the disk (e.g. /sys/block/sda) 1339fed39564STomáš Golembiovský * @disk_dev -- device node of the disk (e.g. /dev/sda) 1340fed39564STomáš Golembiovský */ 1341fed39564STomáš Golembiovský static GuestDiskInfoList *get_disk_partitions( 1342fed39564STomáš Golembiovský GuestDiskInfoList *list, 1343fed39564STomáš Golembiovský const char *disk_name, const char *disk_dir, 1344fed39564STomáš Golembiovský const char *disk_dev) 1345fed39564STomáš Golembiovský { 134654aa3de7SEric Blake GuestDiskInfoList *ret = list; 1347fed39564STomáš Golembiovský struct dirent *de_disk; 1348fed39564STomáš Golembiovský DIR *dp_disk = NULL; 1349fed39564STomáš Golembiovský size_t len = strlen(disk_name); 1350fed39564STomáš Golembiovský 1351fed39564STomáš Golembiovský dp_disk = opendir(disk_dir); 1352fed39564STomáš Golembiovský while ((de_disk = readdir(dp_disk)) != NULL) { 1353fed39564STomáš Golembiovský g_autofree char *partition_dir = NULL; 1354fed39564STomáš Golembiovský char *dev_name; 1355fed39564STomáš Golembiovský GuestDiskInfo *partition; 1356fed39564STomáš Golembiovský 1357fed39564STomáš Golembiovský if (!(de_disk->d_type & DT_DIR)) { 1358fed39564STomáš Golembiovský continue; 1359fed39564STomáš Golembiovský } 1360fed39564STomáš Golembiovský 1361fed39564STomáš Golembiovský if (!(strncmp(disk_name, de_disk->d_name, len) == 0 && 1362fed39564STomáš Golembiovský ((*(de_disk->d_name + len) == 'p' && 1363fed39564STomáš Golembiovský isdigit(*(de_disk->d_name + len + 1))) || 1364fed39564STomáš Golembiovský isdigit(*(de_disk->d_name + len))))) { 1365fed39564STomáš Golembiovský continue; 1366fed39564STomáš Golembiovský } 1367fed39564STomáš Golembiovský 1368fed39564STomáš Golembiovský partition_dir = g_strdup_printf("%s/%s", 1369fed39564STomáš Golembiovský disk_dir, de_disk->d_name); 1370fed39564STomáš Golembiovský dev_name = get_device_for_syspath(partition_dir); 1371fed39564STomáš Golembiovský if (dev_name == NULL) { 1372fed39564STomáš Golembiovský g_debug("Failed to get device name for syspath: %s", 1373fed39564STomáš Golembiovský disk_dir); 1374fed39564STomáš Golembiovský continue; 1375fed39564STomáš Golembiovský } 1376fed39564STomáš Golembiovský partition = g_new0(GuestDiskInfo, 1); 1377fed39564STomáš Golembiovský partition->name = dev_name; 1378fed39564STomáš Golembiovský partition->partition = true; 1379fed39564STomáš Golembiovský /* Add parent disk as dependent for easier tracking of hierarchy */ 138054aa3de7SEric Blake QAPI_LIST_PREPEND(partition->dependencies, g_strdup(disk_dev)); 1381fed39564STomáš Golembiovský 138254aa3de7SEric Blake QAPI_LIST_PREPEND(ret, partition); 1383fed39564STomáš Golembiovský } 1384fed39564STomáš Golembiovský closedir(dp_disk); 1385fed39564STomáš Golembiovský 1386fed39564STomáš Golembiovský return ret; 1387fed39564STomáš Golembiovský } 1388fed39564STomáš Golembiovský 1389fed39564STomáš Golembiovský GuestDiskInfoList *qmp_guest_get_disks(Error **errp) 1390fed39564STomáš Golembiovský { 139154aa3de7SEric Blake GuestDiskInfoList *ret = NULL; 1392fed39564STomáš Golembiovský GuestDiskInfo *disk; 1393fed39564STomáš Golembiovský DIR *dp = NULL; 1394fed39564STomáš Golembiovský struct dirent *de = NULL; 1395fed39564STomáš Golembiovský 1396fed39564STomáš Golembiovský g_debug("listing /sys/block directory"); 1397fed39564STomáš Golembiovský dp = opendir("/sys/block"); 1398fed39564STomáš Golembiovský if (dp == NULL) { 1399fed39564STomáš Golembiovský error_setg_errno(errp, errno, "Can't open directory \"/sys/block\""); 1400fed39564STomáš Golembiovský return NULL; 1401fed39564STomáš Golembiovský } 1402fed39564STomáš Golembiovský while ((de = readdir(dp)) != NULL) { 1403fed39564STomáš Golembiovský g_autofree char *disk_dir = NULL, *line = NULL, 1404fed39564STomáš Golembiovský *size_path = NULL; 1405fed39564STomáš Golembiovský char *dev_name; 1406fed39564STomáš Golembiovský Error *local_err = NULL; 1407fed39564STomáš Golembiovský if (de->d_type != DT_LNK) { 1408fed39564STomáš Golembiovský g_debug(" skipping entry: %s", de->d_name); 1409fed39564STomáš Golembiovský continue; 1410fed39564STomáš Golembiovský } 1411fed39564STomáš Golembiovský 1412fed39564STomáš Golembiovský /* Check size and skip zero-sized disks */ 1413fed39564STomáš Golembiovský g_debug(" checking disk size"); 1414fed39564STomáš Golembiovský size_path = g_strdup_printf("/sys/block/%s/size", de->d_name); 1415fed39564STomáš Golembiovský if (!g_file_get_contents(size_path, &line, NULL, NULL)) { 1416fed39564STomáš Golembiovský g_debug(" failed to read disk size"); 1417fed39564STomáš Golembiovský continue; 1418fed39564STomáš Golembiovský } 1419fed39564STomáš Golembiovský if (g_strcmp0(line, "0\n") == 0) { 1420fed39564STomáš Golembiovský g_debug(" skipping zero-sized disk"); 1421fed39564STomáš Golembiovský continue; 1422fed39564STomáš Golembiovský } 1423fed39564STomáš Golembiovský 1424fed39564STomáš Golembiovský g_debug(" adding %s", de->d_name); 1425fed39564STomáš Golembiovský disk_dir = g_strdup_printf("/sys/block/%s", de->d_name); 1426fed39564STomáš Golembiovský dev_name = get_device_for_syspath(disk_dir); 1427fed39564STomáš Golembiovský if (dev_name == NULL) { 1428fed39564STomáš Golembiovský g_debug("Failed to get device name for syspath: %s", 1429fed39564STomáš Golembiovský disk_dir); 1430fed39564STomáš Golembiovský continue; 1431fed39564STomáš Golembiovský } 1432fed39564STomáš Golembiovský disk = g_new0(GuestDiskInfo, 1); 1433fed39564STomáš Golembiovský disk->name = dev_name; 1434fed39564STomáš Golembiovský disk->partition = false; 1435fed39564STomáš Golembiovský disk->alias = get_alias_for_syspath(disk_dir); 1436fed39564STomáš Golembiovský disk->has_alias = (disk->alias != NULL); 143754aa3de7SEric Blake QAPI_LIST_PREPEND(ret, disk); 1438fed39564STomáš Golembiovský 1439fed39564STomáš Golembiovský /* Get address for non-virtual devices */ 1440fed39564STomáš Golembiovský bool is_virtual = is_disk_virtual(disk_dir, &local_err); 1441fed39564STomáš Golembiovský if (local_err != NULL) { 1442fed39564STomáš Golembiovský g_debug(" failed to check disk path, ignoring error: %s", 1443fed39564STomáš Golembiovský error_get_pretty(local_err)); 1444fed39564STomáš Golembiovský error_free(local_err); 1445fed39564STomáš Golembiovský local_err = NULL; 1446fed39564STomáš Golembiovský /* Don't try to get the address */ 1447fed39564STomáš Golembiovský is_virtual = true; 1448fed39564STomáš Golembiovský } 1449fed39564STomáš Golembiovský if (!is_virtual) { 1450fed39564STomáš Golembiovský disk->address = get_disk_address(disk_dir, &local_err); 1451fed39564STomáš Golembiovský if (local_err != NULL) { 1452fed39564STomáš Golembiovský g_debug(" failed to get device info, ignoring error: %s", 1453fed39564STomáš Golembiovský error_get_pretty(local_err)); 1454fed39564STomáš Golembiovský error_free(local_err); 1455fed39564STomáš Golembiovský local_err = NULL; 1456fed39564STomáš Golembiovský } else if (disk->address != NULL) { 1457fed39564STomáš Golembiovský disk->has_address = true; 1458fed39564STomáš Golembiovský } 1459fed39564STomáš Golembiovský } 1460fed39564STomáš Golembiovský 1461fed39564STomáš Golembiovský get_disk_deps(disk_dir, disk); 1462fed39564STomáš Golembiovský ret = get_disk_partitions(ret, de->d_name, disk_dir, dev_name); 1463fed39564STomáš Golembiovský } 1464b1b9ab1cSMichael Roth 1465b1b9ab1cSMichael Roth closedir(dp); 1466b1b9ab1cSMichael Roth 1467fed39564STomáš Golembiovský return ret; 1468fed39564STomáš Golembiovský } 1469fed39564STomáš Golembiovský 1470fed39564STomáš Golembiovský #else 1471fed39564STomáš Golembiovský 1472fed39564STomáš Golembiovský GuestDiskInfoList *qmp_guest_get_disks(Error **errp) 1473fed39564STomáš Golembiovský { 1474fed39564STomáš Golembiovský error_setg(errp, QERR_UNSUPPORTED); 1475fed39564STomáš Golembiovský return NULL; 1476fed39564STomáš Golembiovský } 1477fed39564STomáš Golembiovský 1478fed39564STomáš Golembiovský #endif 1479fed39564STomáš Golembiovský 148046d4c572STomoki Sekiyama /* Return a list of the disk device(s)' info which @mount lies on */ 148146d4c572STomoki Sekiyama static GuestFilesystemInfo *build_guest_fsinfo(struct FsMount *mount, 148246d4c572STomoki Sekiyama Error **errp) 148346d4c572STomoki Sekiyama { 148446d4c572STomoki Sekiyama GuestFilesystemInfo *fs = g_malloc0(sizeof(*fs)); 148525b5ff1aSChen Hanxiao struct statvfs buf; 148625b5ff1aSChen Hanxiao unsigned long used, nonroot_total, fr_size; 148746d4c572STomoki Sekiyama char *devpath = g_strdup_printf("/sys/dev/block/%u:%u", 148846d4c572STomoki Sekiyama mount->devmajor, mount->devminor); 148946d4c572STomoki Sekiyama 149046d4c572STomoki Sekiyama fs->mountpoint = g_strdup(mount->dirname); 149146d4c572STomoki Sekiyama fs->type = g_strdup(mount->devtype); 149246d4c572STomoki Sekiyama build_guest_fsinfo_for_device(devpath, fs, errp); 149346d4c572STomoki Sekiyama 149425b5ff1aSChen Hanxiao if (statvfs(fs->mountpoint, &buf) == 0) { 149525b5ff1aSChen Hanxiao fr_size = buf.f_frsize; 149625b5ff1aSChen Hanxiao used = buf.f_blocks - buf.f_bfree; 149725b5ff1aSChen Hanxiao nonroot_total = used + buf.f_bavail; 149825b5ff1aSChen Hanxiao fs->used_bytes = used * fr_size; 149925b5ff1aSChen Hanxiao fs->total_bytes = nonroot_total * fr_size; 150025b5ff1aSChen Hanxiao 150125b5ff1aSChen Hanxiao fs->has_total_bytes = true; 150225b5ff1aSChen Hanxiao fs->has_used_bytes = true; 150325b5ff1aSChen Hanxiao } 150425b5ff1aSChen Hanxiao 150546d4c572STomoki Sekiyama g_free(devpath); 150625b5ff1aSChen Hanxiao 150746d4c572STomoki Sekiyama return fs; 150846d4c572STomoki Sekiyama } 150946d4c572STomoki Sekiyama 151046d4c572STomoki Sekiyama GuestFilesystemInfoList *qmp_guest_get_fsinfo(Error **errp) 151146d4c572STomoki Sekiyama { 151246d4c572STomoki Sekiyama FsMountList mounts; 151346d4c572STomoki Sekiyama struct FsMount *mount; 151454aa3de7SEric Blake GuestFilesystemInfoList *ret = NULL; 151546d4c572STomoki Sekiyama Error *local_err = NULL; 151646d4c572STomoki Sekiyama 151746d4c572STomoki Sekiyama QTAILQ_INIT(&mounts); 151846d4c572STomoki Sekiyama build_fs_mount_list(&mounts, &local_err); 151946d4c572STomoki Sekiyama if (local_err) { 152046d4c572STomoki Sekiyama error_propagate(errp, local_err); 152146d4c572STomoki Sekiyama return NULL; 152246d4c572STomoki Sekiyama } 152346d4c572STomoki Sekiyama 152446d4c572STomoki Sekiyama QTAILQ_FOREACH(mount, &mounts, next) { 152546d4c572STomoki Sekiyama g_debug("Building guest fsinfo for '%s'", mount->dirname); 152646d4c572STomoki Sekiyama 152754aa3de7SEric Blake QAPI_LIST_PREPEND(ret, build_guest_fsinfo(mount, &local_err)); 152846d4c572STomoki Sekiyama if (local_err) { 152946d4c572STomoki Sekiyama error_propagate(errp, local_err); 153046d4c572STomoki Sekiyama qapi_free_GuestFilesystemInfoList(ret); 153146d4c572STomoki Sekiyama ret = NULL; 153246d4c572STomoki Sekiyama break; 153346d4c572STomoki Sekiyama } 153446d4c572STomoki Sekiyama } 153546d4c572STomoki Sekiyama 153646d4c572STomoki Sekiyama free_fs_mount_list(&mounts); 153746d4c572STomoki Sekiyama return ret; 153846d4c572STomoki Sekiyama } 153946d4c572STomoki Sekiyama 154046d4c572STomoki Sekiyama 1541ec0f694cSTomoki Sekiyama typedef enum { 1542ec0f694cSTomoki Sekiyama FSFREEZE_HOOK_THAW = 0, 1543ec0f694cSTomoki Sekiyama FSFREEZE_HOOK_FREEZE, 1544ec0f694cSTomoki Sekiyama } FsfreezeHookArg; 1545ec0f694cSTomoki Sekiyama 154613a439ecSStefan Weil static const char *fsfreeze_hook_arg_string[] = { 1547ec0f694cSTomoki Sekiyama "thaw", 1548ec0f694cSTomoki Sekiyama "freeze", 1549ec0f694cSTomoki Sekiyama }; 1550ec0f694cSTomoki Sekiyama 155177dbc81bSMarkus Armbruster static void execute_fsfreeze_hook(FsfreezeHookArg arg, Error **errp) 1552ec0f694cSTomoki Sekiyama { 1553ec0f694cSTomoki Sekiyama int status; 1554ec0f694cSTomoki Sekiyama pid_t pid; 1555ec0f694cSTomoki Sekiyama const char *hook; 1556ec0f694cSTomoki Sekiyama const char *arg_str = fsfreeze_hook_arg_string[arg]; 1557ec0f694cSTomoki Sekiyama Error *local_err = NULL; 1558ec0f694cSTomoki Sekiyama 1559ec0f694cSTomoki Sekiyama hook = ga_fsfreeze_hook(ga_state); 1560ec0f694cSTomoki Sekiyama if (!hook) { 1561ec0f694cSTomoki Sekiyama return; 1562ec0f694cSTomoki Sekiyama } 1563ec0f694cSTomoki Sekiyama if (access(hook, X_OK) != 0) { 156477dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "can't access fsfreeze hook '%s'", hook); 1565ec0f694cSTomoki Sekiyama return; 1566ec0f694cSTomoki Sekiyama } 1567ec0f694cSTomoki Sekiyama 1568ec0f694cSTomoki Sekiyama slog("executing fsfreeze hook with arg '%s'", arg_str); 1569ec0f694cSTomoki Sekiyama pid = fork(); 1570ec0f694cSTomoki Sekiyama if (pid == 0) { 1571ec0f694cSTomoki Sekiyama setsid(); 1572ec0f694cSTomoki Sekiyama reopen_fd_to_null(0); 1573ec0f694cSTomoki Sekiyama reopen_fd_to_null(1); 1574ec0f694cSTomoki Sekiyama reopen_fd_to_null(2); 1575ec0f694cSTomoki Sekiyama 1576ec0f694cSTomoki Sekiyama execle(hook, hook, arg_str, NULL, environ); 1577ec0f694cSTomoki Sekiyama _exit(EXIT_FAILURE); 1578ec0f694cSTomoki Sekiyama } else if (pid < 0) { 157977dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to create child process"); 1580ec0f694cSTomoki Sekiyama return; 1581ec0f694cSTomoki Sekiyama } 1582ec0f694cSTomoki Sekiyama 1583ec0f694cSTomoki Sekiyama ga_wait_child(pid, &status, &local_err); 158484d18f06SMarkus Armbruster if (local_err) { 158577dbc81bSMarkus Armbruster error_propagate(errp, local_err); 1586ec0f694cSTomoki Sekiyama return; 1587ec0f694cSTomoki Sekiyama } 1588ec0f694cSTomoki Sekiyama 1589ec0f694cSTomoki Sekiyama if (!WIFEXITED(status)) { 159077dbc81bSMarkus Armbruster error_setg(errp, "fsfreeze hook has terminated abnormally"); 1591ec0f694cSTomoki Sekiyama return; 1592ec0f694cSTomoki Sekiyama } 1593ec0f694cSTomoki Sekiyama 1594ec0f694cSTomoki Sekiyama status = WEXITSTATUS(status); 1595ec0f694cSTomoki Sekiyama if (status) { 159677dbc81bSMarkus Armbruster error_setg(errp, "fsfreeze hook has failed with status %d", status); 1597ec0f694cSTomoki Sekiyama return; 1598ec0f694cSTomoki Sekiyama } 1599ec0f694cSTomoki Sekiyama } 1600ec0f694cSTomoki Sekiyama 1601c216e5adSMichael Roth /* 1602c216e5adSMichael Roth * Return status of freeze/thaw 1603c216e5adSMichael Roth */ 160477dbc81bSMarkus Armbruster GuestFsfreezeStatus qmp_guest_fsfreeze_status(Error **errp) 1605c216e5adSMichael Roth { 1606f22d85e9SMichael Roth if (ga_is_frozen(ga_state)) { 1607f22d85e9SMichael Roth return GUEST_FSFREEZE_STATUS_FROZEN; 1608f22d85e9SMichael Roth } 1609f22d85e9SMichael Roth 1610f22d85e9SMichael Roth return GUEST_FSFREEZE_STATUS_THAWED; 1611c216e5adSMichael Roth } 1612c216e5adSMichael Roth 1613e99bce20STomoki Sekiyama int64_t qmp_guest_fsfreeze_freeze(Error **errp) 1614e99bce20STomoki Sekiyama { 1615e99bce20STomoki Sekiyama return qmp_guest_fsfreeze_freeze_list(false, NULL, errp); 1616e99bce20STomoki Sekiyama } 1617e99bce20STomoki Sekiyama 1618c216e5adSMichael Roth /* 1619c216e5adSMichael Roth * Walk list of mounted file systems in the guest, and freeze the ones which 1620c216e5adSMichael Roth * are real local file systems. 1621c216e5adSMichael Roth */ 1622e99bce20STomoki Sekiyama int64_t qmp_guest_fsfreeze_freeze_list(bool has_mountpoints, 1623e99bce20STomoki Sekiyama strList *mountpoints, 1624e99bce20STomoki Sekiyama Error **errp) 1625c216e5adSMichael Roth { 1626c216e5adSMichael Roth int ret = 0, i = 0; 1627e99bce20STomoki Sekiyama strList *list; 1628af02203fSPaolo Bonzini FsMountList mounts; 1629af02203fSPaolo Bonzini struct FsMount *mount; 1630261551d1SLuiz Capitulino Error *local_err = NULL; 1631c216e5adSMichael Roth int fd; 1632c216e5adSMichael Roth 1633c216e5adSMichael Roth slog("guest-fsfreeze called"); 1634c216e5adSMichael Roth 1635ec0f694cSTomoki Sekiyama execute_fsfreeze_hook(FSFREEZE_HOOK_FREEZE, &local_err); 163684d18f06SMarkus Armbruster if (local_err) { 163777dbc81bSMarkus Armbruster error_propagate(errp, local_err); 1638ec0f694cSTomoki Sekiyama return -1; 1639ec0f694cSTomoki Sekiyama } 1640ec0f694cSTomoki Sekiyama 16419e8aded4SMichael Roth QTAILQ_INIT(&mounts); 1642261551d1SLuiz Capitulino build_fs_mount_list(&mounts, &local_err); 164384d18f06SMarkus Armbruster if (local_err) { 164477dbc81bSMarkus Armbruster error_propagate(errp, local_err); 1645261551d1SLuiz Capitulino return -1; 1646c216e5adSMichael Roth } 1647c216e5adSMichael Roth 1648c216e5adSMichael Roth /* cannot risk guest agent blocking itself on a write in this state */ 1649f22d85e9SMichael Roth ga_set_frozen(ga_state); 1650c216e5adSMichael Roth 1651eae3eb3eSPaolo Bonzini QTAILQ_FOREACH_REVERSE(mount, &mounts, next) { 1652e99bce20STomoki Sekiyama /* To issue fsfreeze in the reverse order of mounts, check if the 1653e99bce20STomoki Sekiyama * mount is listed in the list here */ 1654e99bce20STomoki Sekiyama if (has_mountpoints) { 1655e99bce20STomoki Sekiyama for (list = mountpoints; list; list = list->next) { 1656e99bce20STomoki Sekiyama if (strcmp(list->value, mount->dirname) == 0) { 1657e99bce20STomoki Sekiyama break; 1658e99bce20STomoki Sekiyama } 1659e99bce20STomoki Sekiyama } 1660e99bce20STomoki Sekiyama if (!list) { 1661e99bce20STomoki Sekiyama continue; 1662e99bce20STomoki Sekiyama } 1663e99bce20STomoki Sekiyama } 1664e99bce20STomoki Sekiyama 1665448058aaSDaniel P. Berrangé fd = qemu_open_old(mount->dirname, O_RDONLY); 1666c216e5adSMichael Roth if (fd == -1) { 166777dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to open %s", mount->dirname); 1668c216e5adSMichael Roth goto error; 1669c216e5adSMichael Roth } 1670c216e5adSMichael Roth 1671e35916acSMichael Tokarev /* we try to cull filesystems we know won't work in advance, but other 1672e35916acSMichael Tokarev * filesystems may not implement fsfreeze for less obvious reasons. 16739e8aded4SMichael Roth * these will report EOPNOTSUPP. we simply ignore these when tallying 16749e8aded4SMichael Roth * the number of frozen filesystems. 1675ce2eb6c4SPeter Lieven * if a filesystem is mounted more than once (aka bind mount) a 1676ce2eb6c4SPeter Lieven * consecutive attempt to freeze an already frozen filesystem will 1677ce2eb6c4SPeter Lieven * return EBUSY. 16789e8aded4SMichael Roth * 16799e8aded4SMichael Roth * any other error means a failure to freeze a filesystem we 16809e8aded4SMichael Roth * expect to be freezable, so return an error in those cases 16819e8aded4SMichael Roth * and return system to thawed state. 1682c216e5adSMichael Roth */ 1683c216e5adSMichael Roth ret = ioctl(fd, FIFREEZE); 16849e8aded4SMichael Roth if (ret == -1) { 1685ce2eb6c4SPeter Lieven if (errno != EOPNOTSUPP && errno != EBUSY) { 168677dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to freeze %s", 1687617fbbc1SLuiz Capitulino mount->dirname); 1688c216e5adSMichael Roth close(fd); 1689c216e5adSMichael Roth goto error; 1690c216e5adSMichael Roth } 16919e8aded4SMichael Roth } else { 1692c216e5adSMichael Roth i++; 1693c216e5adSMichael Roth } 16949e8aded4SMichael Roth close(fd); 16959e8aded4SMichael Roth } 1696c216e5adSMichael Roth 1697af02203fSPaolo Bonzini free_fs_mount_list(&mounts); 169865650f01SChen Hanxiao /* We may not issue any FIFREEZE here. 169965650f01SChen Hanxiao * Just unset ga_state here and ready for the next call. 170065650f01SChen Hanxiao */ 170165650f01SChen Hanxiao if (i == 0) { 170265650f01SChen Hanxiao ga_unset_frozen(ga_state); 170365650f01SChen Hanxiao } 1704c216e5adSMichael Roth return i; 1705c216e5adSMichael Roth 1706c216e5adSMichael Roth error: 1707af02203fSPaolo Bonzini free_fs_mount_list(&mounts); 1708c216e5adSMichael Roth qmp_guest_fsfreeze_thaw(NULL); 1709c216e5adSMichael Roth return 0; 1710c216e5adSMichael Roth } 1711c216e5adSMichael Roth 1712c216e5adSMichael Roth /* 1713c216e5adSMichael Roth * Walk list of frozen file systems in the guest, and thaw them. 1714c216e5adSMichael Roth */ 171577dbc81bSMarkus Armbruster int64_t qmp_guest_fsfreeze_thaw(Error **errp) 1716c216e5adSMichael Roth { 1717c216e5adSMichael Roth int ret; 1718af02203fSPaolo Bonzini FsMountList mounts; 1719af02203fSPaolo Bonzini FsMount *mount; 17209e8aded4SMichael Roth int fd, i = 0, logged; 1721261551d1SLuiz Capitulino Error *local_err = NULL; 1722c216e5adSMichael Roth 17239e8aded4SMichael Roth QTAILQ_INIT(&mounts); 1724261551d1SLuiz Capitulino build_fs_mount_list(&mounts, &local_err); 172584d18f06SMarkus Armbruster if (local_err) { 172677dbc81bSMarkus Armbruster error_propagate(errp, local_err); 17279e8aded4SMichael Roth return 0; 17289e8aded4SMichael Roth } 17299e8aded4SMichael Roth 17309e8aded4SMichael Roth QTAILQ_FOREACH(mount, &mounts, next) { 17319e8aded4SMichael Roth logged = false; 1732448058aaSDaniel P. Berrangé fd = qemu_open_old(mount->dirname, O_RDONLY); 1733c216e5adSMichael Roth if (fd == -1) { 1734c216e5adSMichael Roth continue; 1735c216e5adSMichael Roth } 17369e8aded4SMichael Roth /* we have no way of knowing whether a filesystem was actually unfrozen 17379e8aded4SMichael Roth * as a result of a successful call to FITHAW, only that if an error 17389e8aded4SMichael Roth * was returned the filesystem was *not* unfrozen by that particular 17399e8aded4SMichael Roth * call. 17409e8aded4SMichael Roth * 1741a31f0531SJim Meyering * since multiple preceding FIFREEZEs require multiple calls to FITHAW 17429e8aded4SMichael Roth * to unfreeze, continuing issuing FITHAW until an error is returned, 17439e8aded4SMichael Roth * in which case either the filesystem is in an unfreezable state, or, 17449e8aded4SMichael Roth * more likely, it was thawed previously (and remains so afterward). 17459e8aded4SMichael Roth * 17469e8aded4SMichael Roth * also, since the most recent successful call is the one that did 17479e8aded4SMichael Roth * the actual unfreeze, we can use this to provide an accurate count 17489e8aded4SMichael Roth * of the number of filesystems unfrozen by guest-fsfreeze-thaw, which 17499e8aded4SMichael Roth * may * be useful for determining whether a filesystem was unfrozen 17509e8aded4SMichael Roth * during the freeze/thaw phase by a process other than qemu-ga. 17519e8aded4SMichael Roth */ 17529e8aded4SMichael Roth do { 1753c216e5adSMichael Roth ret = ioctl(fd, FITHAW); 17549e8aded4SMichael Roth if (ret == 0 && !logged) { 1755c216e5adSMichael Roth i++; 17569e8aded4SMichael Roth logged = true; 17579e8aded4SMichael Roth } 17589e8aded4SMichael Roth } while (ret == 0); 17599e8aded4SMichael Roth close(fd); 1760c216e5adSMichael Roth } 1761c216e5adSMichael Roth 1762f22d85e9SMichael Roth ga_unset_frozen(ga_state); 1763af02203fSPaolo Bonzini free_fs_mount_list(&mounts); 1764ec0f694cSTomoki Sekiyama 176577dbc81bSMarkus Armbruster execute_fsfreeze_hook(FSFREEZE_HOOK_THAW, errp); 1766ec0f694cSTomoki Sekiyama 1767c216e5adSMichael Roth return i; 1768c216e5adSMichael Roth } 1769c216e5adSMichael Roth 1770c216e5adSMichael Roth static void guest_fsfreeze_cleanup(void) 1771c216e5adSMichael Roth { 1772c216e5adSMichael Roth Error *err = NULL; 1773c216e5adSMichael Roth 1774f22d85e9SMichael Roth if (ga_is_frozen(ga_state) == GUEST_FSFREEZE_STATUS_FROZEN) { 17756f686749SMarkus Armbruster qmp_guest_fsfreeze_thaw(&err); 17766f686749SMarkus Armbruster if (err) { 17776f686749SMarkus Armbruster slog("failed to clean up frozen filesystems: %s", 17786f686749SMarkus Armbruster error_get_pretty(err)); 17796f686749SMarkus Armbruster error_free(err); 1780c216e5adSMichael Roth } 1781c216e5adSMichael Roth } 1782c216e5adSMichael Roth } 1783e72c3f2eSMichael Roth #endif /* CONFIG_FSFREEZE */ 1784c216e5adSMichael Roth 1785eab5fd59SPaolo Bonzini #if defined(CONFIG_FSTRIM) 1786eab5fd59SPaolo Bonzini /* 1787eab5fd59SPaolo Bonzini * Walk list of mounted file systems in the guest, and trim them. 1788eab5fd59SPaolo Bonzini */ 1789e82855d9SJustin Ossevoort GuestFilesystemTrimResponse * 1790e82855d9SJustin Ossevoort qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **errp) 1791eab5fd59SPaolo Bonzini { 1792e82855d9SJustin Ossevoort GuestFilesystemTrimResponse *response; 1793e82855d9SJustin Ossevoort GuestFilesystemTrimResult *result; 1794eab5fd59SPaolo Bonzini int ret = 0; 1795eab5fd59SPaolo Bonzini FsMountList mounts; 1796eab5fd59SPaolo Bonzini struct FsMount *mount; 1797eab5fd59SPaolo Bonzini int fd; 1798261551d1SLuiz Capitulino Error *local_err = NULL; 179973a652a1SJustin Ossevoort struct fstrim_range r; 1800eab5fd59SPaolo Bonzini 1801eab5fd59SPaolo Bonzini slog("guest-fstrim called"); 1802eab5fd59SPaolo Bonzini 1803eab5fd59SPaolo Bonzini QTAILQ_INIT(&mounts); 1804261551d1SLuiz Capitulino build_fs_mount_list(&mounts, &local_err); 180584d18f06SMarkus Armbruster if (local_err) { 180677dbc81bSMarkus Armbruster error_propagate(errp, local_err); 1807e82855d9SJustin Ossevoort return NULL; 1808eab5fd59SPaolo Bonzini } 1809eab5fd59SPaolo Bonzini 1810e82855d9SJustin Ossevoort response = g_malloc0(sizeof(*response)); 1811e82855d9SJustin Ossevoort 1812eab5fd59SPaolo Bonzini QTAILQ_FOREACH(mount, &mounts, next) { 1813e82855d9SJustin Ossevoort result = g_malloc0(sizeof(*result)); 1814e82855d9SJustin Ossevoort result->path = g_strdup(mount->dirname); 1815e82855d9SJustin Ossevoort 181654aa3de7SEric Blake QAPI_LIST_PREPEND(response->paths, result); 1817e82855d9SJustin Ossevoort 1818448058aaSDaniel P. Berrangé fd = qemu_open_old(mount->dirname, O_RDONLY); 1819eab5fd59SPaolo Bonzini if (fd == -1) { 1820e82855d9SJustin Ossevoort result->error = g_strdup_printf("failed to open: %s", 1821e82855d9SJustin Ossevoort strerror(errno)); 1822e82855d9SJustin Ossevoort result->has_error = true; 1823e82855d9SJustin Ossevoort continue; 1824eab5fd59SPaolo Bonzini } 1825eab5fd59SPaolo Bonzini 1826e35916acSMichael Tokarev /* We try to cull filesystems we know won't work in advance, but other 1827e35916acSMichael Tokarev * filesystems may not implement fstrim for less obvious reasons. 1828e35916acSMichael Tokarev * These will report EOPNOTSUPP; while in some other cases ENOTTY 1829e35916acSMichael Tokarev * will be reported (e.g. CD-ROMs). 1830e82855d9SJustin Ossevoort * Any other error means an unexpected error. 1831eab5fd59SPaolo Bonzini */ 183273a652a1SJustin Ossevoort r.start = 0; 183373a652a1SJustin Ossevoort r.len = -1; 183473a652a1SJustin Ossevoort r.minlen = has_minimum ? minimum : 0; 1835eab5fd59SPaolo Bonzini ret = ioctl(fd, FITRIM, &r); 1836eab5fd59SPaolo Bonzini if (ret == -1) { 1837e82855d9SJustin Ossevoort result->has_error = true; 1838e82855d9SJustin Ossevoort if (errno == ENOTTY || errno == EOPNOTSUPP) { 1839e82855d9SJustin Ossevoort result->error = g_strdup("trim not supported"); 1840e82855d9SJustin Ossevoort } else { 1841e82855d9SJustin Ossevoort result->error = g_strdup_printf("failed to trim: %s", 1842e82855d9SJustin Ossevoort strerror(errno)); 1843e82855d9SJustin Ossevoort } 1844eab5fd59SPaolo Bonzini close(fd); 1845e82855d9SJustin Ossevoort continue; 1846eab5fd59SPaolo Bonzini } 1847e82855d9SJustin Ossevoort 1848e82855d9SJustin Ossevoort result->has_minimum = true; 1849e82855d9SJustin Ossevoort result->minimum = r.minlen; 1850e82855d9SJustin Ossevoort result->has_trimmed = true; 1851e82855d9SJustin Ossevoort result->trimmed = r.len; 1852eab5fd59SPaolo Bonzini close(fd); 1853eab5fd59SPaolo Bonzini } 1854eab5fd59SPaolo Bonzini 1855eab5fd59SPaolo Bonzini free_fs_mount_list(&mounts); 1856e82855d9SJustin Ossevoort return response; 1857eab5fd59SPaolo Bonzini } 1858eab5fd59SPaolo Bonzini #endif /* CONFIG_FSTRIM */ 1859eab5fd59SPaolo Bonzini 1860eab5fd59SPaolo Bonzini 186111d0f125SLuiz Capitulino #define LINUX_SYS_STATE_FILE "/sys/power/state" 186211d0f125SLuiz Capitulino #define SUSPEND_SUPPORTED 0 186311d0f125SLuiz Capitulino #define SUSPEND_NOT_SUPPORTED 1 186411d0f125SLuiz Capitulino 18658b020b5eSDaniel Henrique Barboza typedef enum { 18668b020b5eSDaniel Henrique Barboza SUSPEND_MODE_DISK = 0, 18678b020b5eSDaniel Henrique Barboza SUSPEND_MODE_RAM = 1, 18688b020b5eSDaniel Henrique Barboza SUSPEND_MODE_HYBRID = 2, 18698b020b5eSDaniel Henrique Barboza } SuspendMode; 18708b020b5eSDaniel Henrique Barboza 18718b020b5eSDaniel Henrique Barboza /* 18728b020b5eSDaniel Henrique Barboza * Executes a command in a child process using g_spawn_sync, 18738b020b5eSDaniel Henrique Barboza * returning an int >= 0 representing the exit status of the 18748b020b5eSDaniel Henrique Barboza * process. 18758b020b5eSDaniel Henrique Barboza * 18768b020b5eSDaniel Henrique Barboza * If the program wasn't found in path, returns -1. 18778b020b5eSDaniel Henrique Barboza * 18788b020b5eSDaniel Henrique Barboza * If a problem happened when creating the child process, 18798b020b5eSDaniel Henrique Barboza * returns -1 and errp is set. 18808b020b5eSDaniel Henrique Barboza */ 18818b020b5eSDaniel Henrique Barboza static int run_process_child(const char *command[], Error **errp) 18828b020b5eSDaniel Henrique Barboza { 18838b020b5eSDaniel Henrique Barboza int exit_status, spawn_flag; 18848b020b5eSDaniel Henrique Barboza GError *g_err = NULL; 18858b020b5eSDaniel Henrique Barboza bool success; 18868b020b5eSDaniel Henrique Barboza 18878b020b5eSDaniel Henrique Barboza spawn_flag = G_SPAWN_SEARCH_PATH | G_SPAWN_STDOUT_TO_DEV_NULL | 18888b020b5eSDaniel Henrique Barboza G_SPAWN_STDERR_TO_DEV_NULL; 18898b020b5eSDaniel Henrique Barboza 18908b020b5eSDaniel Henrique Barboza success = g_spawn_sync(NULL, (char **)command, environ, spawn_flag, 18918b020b5eSDaniel Henrique Barboza NULL, NULL, NULL, NULL, 18928b020b5eSDaniel Henrique Barboza &exit_status, &g_err); 18938b020b5eSDaniel Henrique Barboza 18948b020b5eSDaniel Henrique Barboza if (success) { 18958b020b5eSDaniel Henrique Barboza return WEXITSTATUS(exit_status); 18968b020b5eSDaniel Henrique Barboza } 18978b020b5eSDaniel Henrique Barboza 18988b020b5eSDaniel Henrique Barboza if (g_err && (g_err->code != G_SPAWN_ERROR_NOENT)) { 18998b020b5eSDaniel Henrique Barboza error_setg(errp, "failed to create child process, error '%s'", 19008b020b5eSDaniel Henrique Barboza g_err->message); 19018b020b5eSDaniel Henrique Barboza } 19028b020b5eSDaniel Henrique Barboza 19038b020b5eSDaniel Henrique Barboza g_error_free(g_err); 19048b020b5eSDaniel Henrique Barboza return -1; 19058b020b5eSDaniel Henrique Barboza } 19068b020b5eSDaniel Henrique Barboza 1907067927d6SDaniel Henrique Barboza static bool systemd_supports_mode(SuspendMode mode, Error **errp) 1908067927d6SDaniel Henrique Barboza { 1909067927d6SDaniel Henrique Barboza const char *systemctl_args[3] = {"systemd-hibernate", "systemd-suspend", 1910067927d6SDaniel Henrique Barboza "systemd-hybrid-sleep"}; 1911067927d6SDaniel Henrique Barboza const char *cmd[4] = {"systemctl", "status", systemctl_args[mode], NULL}; 1912067927d6SDaniel Henrique Barboza int status; 1913067927d6SDaniel Henrique Barboza 1914992861fbSMarkus Armbruster status = run_process_child(cmd, errp); 1915067927d6SDaniel Henrique Barboza 1916067927d6SDaniel Henrique Barboza /* 1917067927d6SDaniel Henrique Barboza * systemctl status uses LSB return codes so we can expect 1918067927d6SDaniel Henrique Barboza * status > 0 and be ok. To assert if the guest has support 1919067927d6SDaniel Henrique Barboza * for the selected suspend mode, status should be < 4. 4 is 1920067927d6SDaniel Henrique Barboza * the code for unknown service status, the return value when 1921067927d6SDaniel Henrique Barboza * the service does not exist. A common value is status = 3 1922067927d6SDaniel Henrique Barboza * (program is not running). 1923067927d6SDaniel Henrique Barboza */ 1924067927d6SDaniel Henrique Barboza if (status > 0 && status < 4) { 1925067927d6SDaniel Henrique Barboza return true; 1926067927d6SDaniel Henrique Barboza } 1927067927d6SDaniel Henrique Barboza 1928067927d6SDaniel Henrique Barboza return false; 1929067927d6SDaniel Henrique Barboza } 1930067927d6SDaniel Henrique Barboza 1931067927d6SDaniel Henrique Barboza static void systemd_suspend(SuspendMode mode, Error **errp) 1932067927d6SDaniel Henrique Barboza { 1933067927d6SDaniel Henrique Barboza Error *local_err = NULL; 1934067927d6SDaniel Henrique Barboza const char *systemctl_args[3] = {"hibernate", "suspend", "hybrid-sleep"}; 1935067927d6SDaniel Henrique Barboza const char *cmd[3] = {"systemctl", systemctl_args[mode], NULL}; 1936067927d6SDaniel Henrique Barboza int status; 1937067927d6SDaniel Henrique Barboza 1938067927d6SDaniel Henrique Barboza status = run_process_child(cmd, &local_err); 1939067927d6SDaniel Henrique Barboza 1940067927d6SDaniel Henrique Barboza if (status == 0) { 1941067927d6SDaniel Henrique Barboza return; 1942067927d6SDaniel Henrique Barboza } 1943067927d6SDaniel Henrique Barboza 1944067927d6SDaniel Henrique Barboza if ((status == -1) && !local_err) { 1945067927d6SDaniel Henrique Barboza error_setg(errp, "the helper program 'systemctl %s' was not found", 1946067927d6SDaniel Henrique Barboza systemctl_args[mode]); 1947067927d6SDaniel Henrique Barboza return; 1948067927d6SDaniel Henrique Barboza } 1949067927d6SDaniel Henrique Barboza 1950067927d6SDaniel Henrique Barboza if (local_err) { 1951067927d6SDaniel Henrique Barboza error_propagate(errp, local_err); 1952067927d6SDaniel Henrique Barboza } else { 1953067927d6SDaniel Henrique Barboza error_setg(errp, "the helper program 'systemctl %s' returned an " 1954067927d6SDaniel Henrique Barboza "unexpected exit status code (%d)", 1955067927d6SDaniel Henrique Barboza systemctl_args[mode], status); 1956067927d6SDaniel Henrique Barboza } 1957067927d6SDaniel Henrique Barboza } 1958067927d6SDaniel Henrique Barboza 19598b020b5eSDaniel Henrique Barboza static bool pmutils_supports_mode(SuspendMode mode, Error **errp) 196011d0f125SLuiz Capitulino { 19616b26e837SLuiz Capitulino Error *local_err = NULL; 19628b020b5eSDaniel Henrique Barboza const char *pmutils_args[3] = {"--hibernate", "--suspend", 19638b020b5eSDaniel Henrique Barboza "--suspend-hybrid"}; 19648b020b5eSDaniel Henrique Barboza const char *cmd[3] = {"pm-is-supported", pmutils_args[mode], NULL}; 1965dc8764f0SLuiz Capitulino int status; 196611d0f125SLuiz Capitulino 19678b020b5eSDaniel Henrique Barboza status = run_process_child(cmd, &local_err); 1968304a0fcbSDaniel Henrique Barboza 19698b020b5eSDaniel Henrique Barboza if (status == SUSPEND_SUPPORTED) { 19708b020b5eSDaniel Henrique Barboza return true; 1971304a0fcbSDaniel Henrique Barboza } 1972304a0fcbSDaniel Henrique Barboza 19738b020b5eSDaniel Henrique Barboza if ((status == -1) && !local_err) { 19748b020b5eSDaniel Henrique Barboza return false; 1975a5fcf0e3SDaniel Henrique Barboza } 197611d0f125SLuiz Capitulino 197784d18f06SMarkus Armbruster if (local_err) { 197877dbc81bSMarkus Armbruster error_propagate(errp, local_err); 19798b020b5eSDaniel Henrique Barboza } else { 198077dbc81bSMarkus Armbruster error_setg(errp, 19818b020b5eSDaniel Henrique Barboza "the helper program '%s' returned an unexpected exit" 19828b020b5eSDaniel Henrique Barboza " status code (%d)", "pm-is-supported", status); 1983dc8764f0SLuiz Capitulino } 198411d0f125SLuiz Capitulino 19858b020b5eSDaniel Henrique Barboza return false; 1986a5fcf0e3SDaniel Henrique Barboza } 1987a5fcf0e3SDaniel Henrique Barboza 19888b020b5eSDaniel Henrique Barboza static void pmutils_suspend(SuspendMode mode, Error **errp) 1989246d76ebSDaniel Henrique Barboza { 1990246d76ebSDaniel Henrique Barboza Error *local_err = NULL; 19918b020b5eSDaniel Henrique Barboza const char *pmutils_binaries[3] = {"pm-hibernate", "pm-suspend", 19928b020b5eSDaniel Henrique Barboza "pm-suspend-hybrid"}; 19938b020b5eSDaniel Henrique Barboza const char *cmd[2] = {pmutils_binaries[mode], NULL}; 1994246d76ebSDaniel Henrique Barboza int status; 1995246d76ebSDaniel Henrique Barboza 19968b020b5eSDaniel Henrique Barboza status = run_process_child(cmd, &local_err); 1997246d76ebSDaniel Henrique Barboza 19988b020b5eSDaniel Henrique Barboza if (status == 0) { 1999246d76ebSDaniel Henrique Barboza return; 2000246d76ebSDaniel Henrique Barboza } 2001246d76ebSDaniel Henrique Barboza 20028b020b5eSDaniel Henrique Barboza if ((status == -1) && !local_err) { 20038b020b5eSDaniel Henrique Barboza error_setg(errp, "the helper program '%s' was not found", 20048b020b5eSDaniel Henrique Barboza pmutils_binaries[mode]); 2005246d76ebSDaniel Henrique Barboza return; 2006246d76ebSDaniel Henrique Barboza } 2007246d76ebSDaniel Henrique Barboza 2008246d76ebSDaniel Henrique Barboza if (local_err) { 2009246d76ebSDaniel Henrique Barboza error_propagate(errp, local_err); 20108b020b5eSDaniel Henrique Barboza } else { 2011246d76ebSDaniel Henrique Barboza error_setg(errp, 20128b020b5eSDaniel Henrique Barboza "the helper program '%s' returned an unexpected exit" 20138b020b5eSDaniel Henrique Barboza " status code (%d)", pmutils_binaries[mode], status); 20148b020b5eSDaniel Henrique Barboza } 2015246d76ebSDaniel Henrique Barboza } 2016246d76ebSDaniel Henrique Barboza 20178b020b5eSDaniel Henrique Barboza static bool linux_sys_state_supports_mode(SuspendMode mode, Error **errp) 2018a5fcf0e3SDaniel Henrique Barboza { 20198b020b5eSDaniel Henrique Barboza const char *sysfile_strs[3] = {"disk", "mem", NULL}; 20208b020b5eSDaniel Henrique Barboza const char *sysfile_str = sysfile_strs[mode]; 2021a5fcf0e3SDaniel Henrique Barboza char buf[32]; /* hopefully big enough */ 2022a5fcf0e3SDaniel Henrique Barboza int fd; 2023a5fcf0e3SDaniel Henrique Barboza ssize_t ret; 2024a5fcf0e3SDaniel Henrique Barboza 20258b020b5eSDaniel Henrique Barboza if (!sysfile_str) { 20268b020b5eSDaniel Henrique Barboza error_setg(errp, "unknown guest suspend mode"); 2027a5fcf0e3SDaniel Henrique Barboza return false; 2028a5fcf0e3SDaniel Henrique Barboza } 2029a5fcf0e3SDaniel Henrique Barboza 2030a5fcf0e3SDaniel Henrique Barboza fd = open(LINUX_SYS_STATE_FILE, O_RDONLY); 2031a5fcf0e3SDaniel Henrique Barboza if (fd < 0) { 2032a5fcf0e3SDaniel Henrique Barboza return false; 2033a5fcf0e3SDaniel Henrique Barboza } 2034a5fcf0e3SDaniel Henrique Barboza 2035a5fcf0e3SDaniel Henrique Barboza ret = read(fd, buf, sizeof(buf) - 1); 2036d9c745c1SPaolo Bonzini close(fd); 2037a5fcf0e3SDaniel Henrique Barboza if (ret <= 0) { 2038a5fcf0e3SDaniel Henrique Barboza return false; 2039a5fcf0e3SDaniel Henrique Barboza } 2040a5fcf0e3SDaniel Henrique Barboza buf[ret] = '\0'; 2041a5fcf0e3SDaniel Henrique Barboza 2042a5fcf0e3SDaniel Henrique Barboza if (strstr(buf, sysfile_str)) { 2043a5fcf0e3SDaniel Henrique Barboza return true; 2044a5fcf0e3SDaniel Henrique Barboza } 2045a5fcf0e3SDaniel Henrique Barboza return false; 2046a5fcf0e3SDaniel Henrique Barboza } 2047a5fcf0e3SDaniel Henrique Barboza 20488b020b5eSDaniel Henrique Barboza static void linux_sys_state_suspend(SuspendMode mode, Error **errp) 2049246d76ebSDaniel Henrique Barboza { 2050246d76ebSDaniel Henrique Barboza Error *local_err = NULL; 20518b020b5eSDaniel Henrique Barboza const char *sysfile_strs[3] = {"disk", "mem", NULL}; 20528b020b5eSDaniel Henrique Barboza const char *sysfile_str = sysfile_strs[mode]; 2053246d76ebSDaniel Henrique Barboza pid_t pid; 2054246d76ebSDaniel Henrique Barboza int status; 2055246d76ebSDaniel Henrique Barboza 20568b020b5eSDaniel Henrique Barboza if (!sysfile_str) { 2057246d76ebSDaniel Henrique Barboza error_setg(errp, "unknown guest suspend mode"); 2058246d76ebSDaniel Henrique Barboza return; 2059246d76ebSDaniel Henrique Barboza } 2060246d76ebSDaniel Henrique Barboza 2061246d76ebSDaniel Henrique Barboza pid = fork(); 2062246d76ebSDaniel Henrique Barboza if (!pid) { 2063246d76ebSDaniel Henrique Barboza /* child */ 2064246d76ebSDaniel Henrique Barboza int fd; 2065246d76ebSDaniel Henrique Barboza 2066246d76ebSDaniel Henrique Barboza setsid(); 2067246d76ebSDaniel Henrique Barboza reopen_fd_to_null(0); 2068246d76ebSDaniel Henrique Barboza reopen_fd_to_null(1); 2069246d76ebSDaniel Henrique Barboza reopen_fd_to_null(2); 2070246d76ebSDaniel Henrique Barboza 2071246d76ebSDaniel Henrique Barboza fd = open(LINUX_SYS_STATE_FILE, O_WRONLY); 2072246d76ebSDaniel Henrique Barboza if (fd < 0) { 2073246d76ebSDaniel Henrique Barboza _exit(EXIT_FAILURE); 2074246d76ebSDaniel Henrique Barboza } 2075246d76ebSDaniel Henrique Barboza 2076246d76ebSDaniel Henrique Barboza if (write(fd, sysfile_str, strlen(sysfile_str)) < 0) { 2077246d76ebSDaniel Henrique Barboza _exit(EXIT_FAILURE); 2078246d76ebSDaniel Henrique Barboza } 2079246d76ebSDaniel Henrique Barboza 2080246d76ebSDaniel Henrique Barboza _exit(EXIT_SUCCESS); 2081246d76ebSDaniel Henrique Barboza } else if (pid < 0) { 2082246d76ebSDaniel Henrique Barboza error_setg_errno(errp, errno, "failed to create child process"); 2083246d76ebSDaniel Henrique Barboza return; 2084246d76ebSDaniel Henrique Barboza } 2085246d76ebSDaniel Henrique Barboza 2086246d76ebSDaniel Henrique Barboza ga_wait_child(pid, &status, &local_err); 2087246d76ebSDaniel Henrique Barboza if (local_err) { 2088246d76ebSDaniel Henrique Barboza error_propagate(errp, local_err); 2089246d76ebSDaniel Henrique Barboza return; 2090246d76ebSDaniel Henrique Barboza } 2091246d76ebSDaniel Henrique Barboza 2092246d76ebSDaniel Henrique Barboza if (WEXITSTATUS(status)) { 2093246d76ebSDaniel Henrique Barboza error_setg(errp, "child process has failed to suspend"); 2094246d76ebSDaniel Henrique Barboza } 2095246d76ebSDaniel Henrique Barboza 2096246d76ebSDaniel Henrique Barboza } 2097246d76ebSDaniel Henrique Barboza 20988b020b5eSDaniel Henrique Barboza static void guest_suspend(SuspendMode mode, Error **errp) 209911d0f125SLuiz Capitulino { 21007b376087SLuiz Capitulino Error *local_err = NULL; 210173e1d8ebSDaniel Henrique Barboza bool mode_supported = false; 210211d0f125SLuiz Capitulino 210373e1d8ebSDaniel Henrique Barboza if (systemd_supports_mode(mode, &local_err)) { 210473e1d8ebSDaniel Henrique Barboza mode_supported = true; 2105067927d6SDaniel Henrique Barboza systemd_suspend(mode, &local_err); 210673e1d8ebSDaniel Henrique Barboza } 210773e1d8ebSDaniel Henrique Barboza 2108067927d6SDaniel Henrique Barboza if (!local_err) { 2109067927d6SDaniel Henrique Barboza return; 2110067927d6SDaniel Henrique Barboza } 2111067927d6SDaniel Henrique Barboza 2112067927d6SDaniel Henrique Barboza error_free(local_err); 21136a4a3853SVladimir Sementsov-Ogievskiy local_err = NULL; 2114067927d6SDaniel Henrique Barboza 211573e1d8ebSDaniel Henrique Barboza if (pmutils_supports_mode(mode, &local_err)) { 211673e1d8ebSDaniel Henrique Barboza mode_supported = true; 21178b020b5eSDaniel Henrique Barboza pmutils_suspend(mode, &local_err); 211873e1d8ebSDaniel Henrique Barboza } 211973e1d8ebSDaniel Henrique Barboza 2120246d76ebSDaniel Henrique Barboza if (!local_err) { 2121304a0fcbSDaniel Henrique Barboza return; 2122304a0fcbSDaniel Henrique Barboza } 2123304a0fcbSDaniel Henrique Barboza 2124246d76ebSDaniel Henrique Barboza error_free(local_err); 21256a4a3853SVladimir Sementsov-Ogievskiy local_err = NULL; 212611d0f125SLuiz Capitulino 212773e1d8ebSDaniel Henrique Barboza if (linux_sys_state_supports_mode(mode, &local_err)) { 212873e1d8ebSDaniel Henrique Barboza mode_supported = true; 21298b020b5eSDaniel Henrique Barboza linux_sys_state_suspend(mode, &local_err); 213073e1d8ebSDaniel Henrique Barboza } 213173e1d8ebSDaniel Henrique Barboza 213273e1d8ebSDaniel Henrique Barboza if (!mode_supported) { 21336a4a3853SVladimir Sementsov-Ogievskiy error_free(local_err); 213473e1d8ebSDaniel Henrique Barboza error_setg(errp, 213573e1d8ebSDaniel Henrique Barboza "the requested suspend mode is not supported by the guest"); 2136b2322003SMarkus Armbruster } else { 213777dbc81bSMarkus Armbruster error_propagate(errp, local_err); 21387b376087SLuiz Capitulino } 213911d0f125SLuiz Capitulino } 214011d0f125SLuiz Capitulino 214177dbc81bSMarkus Armbruster void qmp_guest_suspend_disk(Error **errp) 214211d0f125SLuiz Capitulino { 2143304a0fcbSDaniel Henrique Barboza guest_suspend(SUSPEND_MODE_DISK, errp); 214411d0f125SLuiz Capitulino } 214511d0f125SLuiz Capitulino 214677dbc81bSMarkus Armbruster void qmp_guest_suspend_ram(Error **errp) 2147fbf42210SLuiz Capitulino { 2148304a0fcbSDaniel Henrique Barboza guest_suspend(SUSPEND_MODE_RAM, errp); 2149fbf42210SLuiz Capitulino } 2150fbf42210SLuiz Capitulino 215177dbc81bSMarkus Armbruster void qmp_guest_suspend_hybrid(Error **errp) 215295f4f404SLuiz Capitulino { 2153304a0fcbSDaniel Henrique Barboza guest_suspend(SUSPEND_MODE_HYBRID, errp); 215495f4f404SLuiz Capitulino } 215595f4f404SLuiz Capitulino 21563424fc9fSMichal Privoznik static GuestNetworkInterfaceList * 21573424fc9fSMichal Privoznik guest_find_interface(GuestNetworkInterfaceList *head, 21583424fc9fSMichal Privoznik const char *name) 21593424fc9fSMichal Privoznik { 21603424fc9fSMichal Privoznik for (; head; head = head->next) { 21613424fc9fSMichal Privoznik if (strcmp(head->value->name, name) == 0) { 21623424fc9fSMichal Privoznik break; 21633424fc9fSMichal Privoznik } 21643424fc9fSMichal Privoznik } 21653424fc9fSMichal Privoznik 21663424fc9fSMichal Privoznik return head; 21673424fc9fSMichal Privoznik } 21683424fc9fSMichal Privoznik 216953f9fcb2SZhiPeng Lu static int guest_get_network_stats(const char *name, 217053f9fcb2SZhiPeng Lu GuestNetworkInterfaceStat *stats) 217153f9fcb2SZhiPeng Lu { 217253f9fcb2SZhiPeng Lu int name_len; 217353f9fcb2SZhiPeng Lu char const *devinfo = "/proc/net/dev"; 217453f9fcb2SZhiPeng Lu FILE *fp; 217553f9fcb2SZhiPeng Lu char *line = NULL, *colon; 217653f9fcb2SZhiPeng Lu size_t n = 0; 217753f9fcb2SZhiPeng Lu fp = fopen(devinfo, "r"); 217853f9fcb2SZhiPeng Lu if (!fp) { 217953f9fcb2SZhiPeng Lu return -1; 218053f9fcb2SZhiPeng Lu } 218153f9fcb2SZhiPeng Lu name_len = strlen(name); 218253f9fcb2SZhiPeng Lu while (getline(&line, &n, fp) != -1) { 218353f9fcb2SZhiPeng Lu long long dummy; 218453f9fcb2SZhiPeng Lu long long rx_bytes; 218553f9fcb2SZhiPeng Lu long long rx_packets; 218653f9fcb2SZhiPeng Lu long long rx_errs; 218753f9fcb2SZhiPeng Lu long long rx_dropped; 218853f9fcb2SZhiPeng Lu long long tx_bytes; 218953f9fcb2SZhiPeng Lu long long tx_packets; 219053f9fcb2SZhiPeng Lu long long tx_errs; 219153f9fcb2SZhiPeng Lu long long tx_dropped; 219253f9fcb2SZhiPeng Lu char *trim_line; 219353f9fcb2SZhiPeng Lu trim_line = g_strchug(line); 219453f9fcb2SZhiPeng Lu if (trim_line[0] == '\0') { 219553f9fcb2SZhiPeng Lu continue; 219653f9fcb2SZhiPeng Lu } 219753f9fcb2SZhiPeng Lu colon = strchr(trim_line, ':'); 219853f9fcb2SZhiPeng Lu if (!colon) { 219953f9fcb2SZhiPeng Lu continue; 220053f9fcb2SZhiPeng Lu } 220153f9fcb2SZhiPeng Lu if (colon - name_len == trim_line && 220253f9fcb2SZhiPeng Lu strncmp(trim_line, name, name_len) == 0) { 220353f9fcb2SZhiPeng Lu if (sscanf(colon + 1, 220453f9fcb2SZhiPeng Lu "%lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld", 220553f9fcb2SZhiPeng Lu &rx_bytes, &rx_packets, &rx_errs, &rx_dropped, 220653f9fcb2SZhiPeng Lu &dummy, &dummy, &dummy, &dummy, 220753f9fcb2SZhiPeng Lu &tx_bytes, &tx_packets, &tx_errs, &tx_dropped, 220853f9fcb2SZhiPeng Lu &dummy, &dummy, &dummy, &dummy) != 16) { 220953f9fcb2SZhiPeng Lu continue; 221053f9fcb2SZhiPeng Lu } 221153f9fcb2SZhiPeng Lu stats->rx_bytes = rx_bytes; 221253f9fcb2SZhiPeng Lu stats->rx_packets = rx_packets; 221353f9fcb2SZhiPeng Lu stats->rx_errs = rx_errs; 221453f9fcb2SZhiPeng Lu stats->rx_dropped = rx_dropped; 221553f9fcb2SZhiPeng Lu stats->tx_bytes = tx_bytes; 221653f9fcb2SZhiPeng Lu stats->tx_packets = tx_packets; 221753f9fcb2SZhiPeng Lu stats->tx_errs = tx_errs; 221853f9fcb2SZhiPeng Lu stats->tx_dropped = tx_dropped; 221953f9fcb2SZhiPeng Lu fclose(fp); 222053f9fcb2SZhiPeng Lu g_free(line); 222153f9fcb2SZhiPeng Lu return 0; 222253f9fcb2SZhiPeng Lu } 222353f9fcb2SZhiPeng Lu } 222453f9fcb2SZhiPeng Lu fclose(fp); 222553f9fcb2SZhiPeng Lu g_free(line); 222653f9fcb2SZhiPeng Lu g_debug("/proc/net/dev: Interface '%s' not found", name); 222753f9fcb2SZhiPeng Lu return -1; 222853f9fcb2SZhiPeng Lu } 222953f9fcb2SZhiPeng Lu 22303424fc9fSMichal Privoznik /* 22313424fc9fSMichal Privoznik * Build information about guest interfaces 22323424fc9fSMichal Privoznik */ 22333424fc9fSMichal Privoznik GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp) 22343424fc9fSMichal Privoznik { 22353424fc9fSMichal Privoznik GuestNetworkInterfaceList *head = NULL, *cur_item = NULL; 22363424fc9fSMichal Privoznik struct ifaddrs *ifap, *ifa; 22373424fc9fSMichal Privoznik 22383424fc9fSMichal Privoznik if (getifaddrs(&ifap) < 0) { 2239878a0ae0SLuiz Capitulino error_setg_errno(errp, errno, "getifaddrs failed"); 22403424fc9fSMichal Privoznik goto error; 22413424fc9fSMichal Privoznik } 22423424fc9fSMichal Privoznik 22433424fc9fSMichal Privoznik for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 22443424fc9fSMichal Privoznik GuestNetworkInterfaceList *info; 22453424fc9fSMichal Privoznik GuestIpAddressList **address_list = NULL, *address_item = NULL; 224653f9fcb2SZhiPeng Lu GuestNetworkInterfaceStat *interface_stat = NULL; 22473424fc9fSMichal Privoznik char addr4[INET_ADDRSTRLEN]; 22483424fc9fSMichal Privoznik char addr6[INET6_ADDRSTRLEN]; 22493424fc9fSMichal Privoznik int sock; 22503424fc9fSMichal Privoznik struct ifreq ifr; 22513424fc9fSMichal Privoznik unsigned char *mac_addr; 22523424fc9fSMichal Privoznik void *p; 22533424fc9fSMichal Privoznik 22543424fc9fSMichal Privoznik g_debug("Processing %s interface", ifa->ifa_name); 22553424fc9fSMichal Privoznik 22563424fc9fSMichal Privoznik info = guest_find_interface(head, ifa->ifa_name); 22573424fc9fSMichal Privoznik 22583424fc9fSMichal Privoznik if (!info) { 22593424fc9fSMichal Privoznik info = g_malloc0(sizeof(*info)); 22603424fc9fSMichal Privoznik info->value = g_malloc0(sizeof(*info->value)); 22613424fc9fSMichal Privoznik info->value->name = g_strdup(ifa->ifa_name); 22623424fc9fSMichal Privoznik 22633424fc9fSMichal Privoznik if (!cur_item) { 22643424fc9fSMichal Privoznik head = cur_item = info; 22653424fc9fSMichal Privoznik } else { 22663424fc9fSMichal Privoznik cur_item->next = info; 22673424fc9fSMichal Privoznik cur_item = info; 22683424fc9fSMichal Privoznik } 22693424fc9fSMichal Privoznik } 22703424fc9fSMichal Privoznik 22713424fc9fSMichal Privoznik if (!info->value->has_hardware_address && 22723424fc9fSMichal Privoznik ifa->ifa_flags & SIOCGIFHWADDR) { 22733424fc9fSMichal Privoznik /* we haven't obtained HW address yet */ 22743424fc9fSMichal Privoznik sock = socket(PF_INET, SOCK_STREAM, 0); 22753424fc9fSMichal Privoznik if (sock == -1) { 2276878a0ae0SLuiz Capitulino error_setg_errno(errp, errno, "failed to create socket"); 22773424fc9fSMichal Privoznik goto error; 22783424fc9fSMichal Privoznik } 22793424fc9fSMichal Privoznik 22803424fc9fSMichal Privoznik memset(&ifr, 0, sizeof(ifr)); 22811ab516edSJim Meyering pstrcpy(ifr.ifr_name, IF_NAMESIZE, info->value->name); 22823424fc9fSMichal Privoznik if (ioctl(sock, SIOCGIFHWADDR, &ifr) == -1) { 2283878a0ae0SLuiz Capitulino error_setg_errno(errp, errno, 2284878a0ae0SLuiz Capitulino "failed to get MAC address of %s", 2285878a0ae0SLuiz Capitulino ifa->ifa_name); 228610a2158fSMarkus Armbruster close(sock); 22873424fc9fSMichal Privoznik goto error; 22883424fc9fSMichal Privoznik } 22893424fc9fSMichal Privoznik 229010a2158fSMarkus Armbruster close(sock); 22913424fc9fSMichal Privoznik mac_addr = (unsigned char *) &ifr.ifr_hwaddr.sa_data; 22923424fc9fSMichal Privoznik 2293e4ada482SStefan Weil info->value->hardware_address = 2294e4ada482SStefan Weil g_strdup_printf("%02x:%02x:%02x:%02x:%02x:%02x", 22953424fc9fSMichal Privoznik (int) mac_addr[0], (int) mac_addr[1], 22963424fc9fSMichal Privoznik (int) mac_addr[2], (int) mac_addr[3], 2297e4ada482SStefan Weil (int) mac_addr[4], (int) mac_addr[5]); 22983424fc9fSMichal Privoznik 22993424fc9fSMichal Privoznik info->value->has_hardware_address = true; 23003424fc9fSMichal Privoznik } 23013424fc9fSMichal Privoznik 23023424fc9fSMichal Privoznik if (ifa->ifa_addr && 23033424fc9fSMichal Privoznik ifa->ifa_addr->sa_family == AF_INET) { 23043424fc9fSMichal Privoznik /* interface with IPv4 address */ 23053424fc9fSMichal Privoznik p = &((struct sockaddr_in *)ifa->ifa_addr)->sin_addr; 23063424fc9fSMichal Privoznik if (!inet_ntop(AF_INET, p, addr4, sizeof(addr4))) { 2307878a0ae0SLuiz Capitulino error_setg_errno(errp, errno, "inet_ntop failed"); 23083424fc9fSMichal Privoznik goto error; 23093424fc9fSMichal Privoznik } 23103424fc9fSMichal Privoznik 231110a2158fSMarkus Armbruster address_item = g_malloc0(sizeof(*address_item)); 231210a2158fSMarkus Armbruster address_item->value = g_malloc0(sizeof(*address_item->value)); 23133424fc9fSMichal Privoznik address_item->value->ip_address = g_strdup(addr4); 23143424fc9fSMichal Privoznik address_item->value->ip_address_type = GUEST_IP_ADDRESS_TYPE_IPV4; 23153424fc9fSMichal Privoznik 23163424fc9fSMichal Privoznik if (ifa->ifa_netmask) { 23173424fc9fSMichal Privoznik /* Count the number of set bits in netmask. 23183424fc9fSMichal Privoznik * This is safe as '1' and '0' cannot be shuffled in netmask. */ 23193424fc9fSMichal Privoznik p = &((struct sockaddr_in *)ifa->ifa_netmask)->sin_addr; 23203424fc9fSMichal Privoznik address_item->value->prefix = ctpop32(((uint32_t *) p)[0]); 23213424fc9fSMichal Privoznik } 23223424fc9fSMichal Privoznik } else if (ifa->ifa_addr && 23233424fc9fSMichal Privoznik ifa->ifa_addr->sa_family == AF_INET6) { 23243424fc9fSMichal Privoznik /* interface with IPv6 address */ 23253424fc9fSMichal Privoznik p = &((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_addr; 23263424fc9fSMichal Privoznik if (!inet_ntop(AF_INET6, p, addr6, sizeof(addr6))) { 2327878a0ae0SLuiz Capitulino error_setg_errno(errp, errno, "inet_ntop failed"); 23283424fc9fSMichal Privoznik goto error; 23293424fc9fSMichal Privoznik } 23303424fc9fSMichal Privoznik 233110a2158fSMarkus Armbruster address_item = g_malloc0(sizeof(*address_item)); 233210a2158fSMarkus Armbruster address_item->value = g_malloc0(sizeof(*address_item->value)); 23333424fc9fSMichal Privoznik address_item->value->ip_address = g_strdup(addr6); 23343424fc9fSMichal Privoznik address_item->value->ip_address_type = GUEST_IP_ADDRESS_TYPE_IPV6; 23353424fc9fSMichal Privoznik 23363424fc9fSMichal Privoznik if (ifa->ifa_netmask) { 23373424fc9fSMichal Privoznik /* Count the number of set bits in netmask. 23383424fc9fSMichal Privoznik * This is safe as '1' and '0' cannot be shuffled in netmask. */ 23393424fc9fSMichal Privoznik p = &((struct sockaddr_in6 *)ifa->ifa_netmask)->sin6_addr; 23403424fc9fSMichal Privoznik address_item->value->prefix = 23413424fc9fSMichal Privoznik ctpop32(((uint32_t *) p)[0]) + 23423424fc9fSMichal Privoznik ctpop32(((uint32_t *) p)[1]) + 23433424fc9fSMichal Privoznik ctpop32(((uint32_t *) p)[2]) + 23443424fc9fSMichal Privoznik ctpop32(((uint32_t *) p)[3]); 23453424fc9fSMichal Privoznik } 23463424fc9fSMichal Privoznik } 23473424fc9fSMichal Privoznik 23483424fc9fSMichal Privoznik if (!address_item) { 23493424fc9fSMichal Privoznik continue; 23503424fc9fSMichal Privoznik } 23513424fc9fSMichal Privoznik 23523424fc9fSMichal Privoznik address_list = &info->value->ip_addresses; 23533424fc9fSMichal Privoznik 23543424fc9fSMichal Privoznik while (*address_list && (*address_list)->next) { 23553424fc9fSMichal Privoznik address_list = &(*address_list)->next; 23563424fc9fSMichal Privoznik } 23573424fc9fSMichal Privoznik 23583424fc9fSMichal Privoznik if (!*address_list) { 23593424fc9fSMichal Privoznik *address_list = address_item; 23603424fc9fSMichal Privoznik } else { 23613424fc9fSMichal Privoznik (*address_list)->next = address_item; 23623424fc9fSMichal Privoznik } 23633424fc9fSMichal Privoznik 23643424fc9fSMichal Privoznik info->value->has_ip_addresses = true; 23653424fc9fSMichal Privoznik 236653f9fcb2SZhiPeng Lu if (!info->value->has_statistics) { 236753f9fcb2SZhiPeng Lu interface_stat = g_malloc0(sizeof(*interface_stat)); 236853f9fcb2SZhiPeng Lu if (guest_get_network_stats(info->value->name, 236953f9fcb2SZhiPeng Lu interface_stat) == -1) { 237053f9fcb2SZhiPeng Lu info->value->has_statistics = false; 237153f9fcb2SZhiPeng Lu g_free(interface_stat); 237253f9fcb2SZhiPeng Lu } else { 237353f9fcb2SZhiPeng Lu info->value->statistics = interface_stat; 237453f9fcb2SZhiPeng Lu info->value->has_statistics = true; 237553f9fcb2SZhiPeng Lu } 237653f9fcb2SZhiPeng Lu } 23773424fc9fSMichal Privoznik } 23783424fc9fSMichal Privoznik 23793424fc9fSMichal Privoznik freeifaddrs(ifap); 23803424fc9fSMichal Privoznik return head; 23813424fc9fSMichal Privoznik 23823424fc9fSMichal Privoznik error: 23833424fc9fSMichal Privoznik freeifaddrs(ifap); 23843424fc9fSMichal Privoznik qapi_free_GuestNetworkInterfaceList(head); 23853424fc9fSMichal Privoznik return NULL; 23863424fc9fSMichal Privoznik } 23873424fc9fSMichal Privoznik 238877dbc81bSMarkus Armbruster #define SYSCONF_EXACT(name, errp) sysconf_exact((name), #name, (errp)) 2389d2baff62SLaszlo Ersek 239077dbc81bSMarkus Armbruster static long sysconf_exact(int name, const char *name_str, Error **errp) 2391d2baff62SLaszlo Ersek { 2392d2baff62SLaszlo Ersek long ret; 2393d2baff62SLaszlo Ersek 2394d2baff62SLaszlo Ersek errno = 0; 2395d2baff62SLaszlo Ersek ret = sysconf(name); 2396d2baff62SLaszlo Ersek if (ret == -1) { 2397d2baff62SLaszlo Ersek if (errno == 0) { 239877dbc81bSMarkus Armbruster error_setg(errp, "sysconf(%s): value indefinite", name_str); 2399d2baff62SLaszlo Ersek } else { 240077dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "sysconf(%s)", name_str); 2401d2baff62SLaszlo Ersek } 2402d2baff62SLaszlo Ersek } 2403d2baff62SLaszlo Ersek return ret; 2404d2baff62SLaszlo Ersek } 2405d2baff62SLaszlo Ersek 2406d2baff62SLaszlo Ersek /* Transfer online/offline status between @vcpu and the guest system. 2407d2baff62SLaszlo Ersek * 2408d2baff62SLaszlo Ersek * On input either @errp or *@errp must be NULL. 2409d2baff62SLaszlo Ersek * 2410d2baff62SLaszlo Ersek * In system-to-@vcpu direction, the following @vcpu fields are accessed: 2411d2baff62SLaszlo Ersek * - R: vcpu->logical_id 2412d2baff62SLaszlo Ersek * - W: vcpu->online 2413d2baff62SLaszlo Ersek * - W: vcpu->can_offline 2414d2baff62SLaszlo Ersek * 2415d2baff62SLaszlo Ersek * In @vcpu-to-system direction, the following @vcpu fields are accessed: 2416d2baff62SLaszlo Ersek * - R: vcpu->logical_id 2417d2baff62SLaszlo Ersek * - R: vcpu->online 2418d2baff62SLaszlo Ersek * 2419d2baff62SLaszlo Ersek * Written members remain unmodified on error. 2420d2baff62SLaszlo Ersek */ 2421d2baff62SLaszlo Ersek static void transfer_vcpu(GuestLogicalProcessor *vcpu, bool sys2vcpu, 2422b4bf912aSIgor Mammedov char *dirpath, Error **errp) 2423d2baff62SLaszlo Ersek { 2424b4bf912aSIgor Mammedov int fd; 2425b4bf912aSIgor Mammedov int res; 2426d2baff62SLaszlo Ersek int dirfd; 2427b4bf912aSIgor Mammedov static const char fn[] = "online"; 2428d2baff62SLaszlo Ersek 2429d2baff62SLaszlo Ersek dirfd = open(dirpath, O_RDONLY | O_DIRECTORY); 2430d2baff62SLaszlo Ersek if (dirfd == -1) { 2431d2baff62SLaszlo Ersek error_setg_errno(errp, errno, "open(\"%s\")", dirpath); 2432b4bf912aSIgor Mammedov return; 2433b4bf912aSIgor Mammedov } 2434d2baff62SLaszlo Ersek 2435d2baff62SLaszlo Ersek fd = openat(dirfd, fn, sys2vcpu ? O_RDONLY : O_RDWR); 2436d2baff62SLaszlo Ersek if (fd == -1) { 2437d2baff62SLaszlo Ersek if (errno != ENOENT) { 2438d2baff62SLaszlo Ersek error_setg_errno(errp, errno, "open(\"%s/%s\")", dirpath, fn); 2439d2baff62SLaszlo Ersek } else if (sys2vcpu) { 2440d2baff62SLaszlo Ersek vcpu->online = true; 2441d2baff62SLaszlo Ersek vcpu->can_offline = false; 2442d2baff62SLaszlo Ersek } else if (!vcpu->online) { 2443d2baff62SLaszlo Ersek error_setg(errp, "logical processor #%" PRId64 " can't be " 2444d2baff62SLaszlo Ersek "offlined", vcpu->logical_id); 2445d2baff62SLaszlo Ersek } /* otherwise pretend successful re-onlining */ 2446d2baff62SLaszlo Ersek } else { 2447d2baff62SLaszlo Ersek unsigned char status; 2448d2baff62SLaszlo Ersek 2449d2baff62SLaszlo Ersek res = pread(fd, &status, 1, 0); 2450d2baff62SLaszlo Ersek if (res == -1) { 2451d2baff62SLaszlo Ersek error_setg_errno(errp, errno, "pread(\"%s/%s\")", dirpath, fn); 2452d2baff62SLaszlo Ersek } else if (res == 0) { 2453d2baff62SLaszlo Ersek error_setg(errp, "pread(\"%s/%s\"): unexpected EOF", dirpath, 2454d2baff62SLaszlo Ersek fn); 2455d2baff62SLaszlo Ersek } else if (sys2vcpu) { 2456d2baff62SLaszlo Ersek vcpu->online = (status != '0'); 2457d2baff62SLaszlo Ersek vcpu->can_offline = true; 2458d2baff62SLaszlo Ersek } else if (vcpu->online != (status != '0')) { 2459d2baff62SLaszlo Ersek status = '0' + vcpu->online; 2460d2baff62SLaszlo Ersek if (pwrite(fd, &status, 1, 0) == -1) { 2461d2baff62SLaszlo Ersek error_setg_errno(errp, errno, "pwrite(\"%s/%s\")", dirpath, 2462d2baff62SLaszlo Ersek fn); 2463d2baff62SLaszlo Ersek } 2464d2baff62SLaszlo Ersek } /* otherwise pretend successful re-(on|off)-lining */ 2465d2baff62SLaszlo Ersek 2466d2baff62SLaszlo Ersek res = close(fd); 2467d2baff62SLaszlo Ersek g_assert(res == 0); 2468d2baff62SLaszlo Ersek } 2469d2baff62SLaszlo Ersek 2470d2baff62SLaszlo Ersek res = close(dirfd); 2471d2baff62SLaszlo Ersek g_assert(res == 0); 2472d2baff62SLaszlo Ersek } 2473d2baff62SLaszlo Ersek 2474d2baff62SLaszlo Ersek GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp) 2475d2baff62SLaszlo Ersek { 2476d2baff62SLaszlo Ersek int64_t current; 2477*c3033fd3SEric Blake GuestLogicalProcessorList *head, **tail; 2478d2baff62SLaszlo Ersek long sc_max; 2479d2baff62SLaszlo Ersek Error *local_err = NULL; 2480d2baff62SLaszlo Ersek 2481d2baff62SLaszlo Ersek current = 0; 2482d2baff62SLaszlo Ersek head = NULL; 2483*c3033fd3SEric Blake tail = &head; 2484d2baff62SLaszlo Ersek sc_max = SYSCONF_EXACT(_SC_NPROCESSORS_CONF, &local_err); 2485d2baff62SLaszlo Ersek 2486d2baff62SLaszlo Ersek while (local_err == NULL && current < sc_max) { 2487d2baff62SLaszlo Ersek GuestLogicalProcessor *vcpu; 2488b4bf912aSIgor Mammedov int64_t id = current++; 2489b4bf912aSIgor Mammedov char *path = g_strdup_printf("/sys/devices/system/cpu/cpu%" PRId64 "/", 2490b4bf912aSIgor Mammedov id); 2491d2baff62SLaszlo Ersek 2492b4bf912aSIgor Mammedov if (g_file_test(path, G_FILE_TEST_EXISTS)) { 2493d2baff62SLaszlo Ersek vcpu = g_malloc0(sizeof *vcpu); 2494b4bf912aSIgor Mammedov vcpu->logical_id = id; 2495d2baff62SLaszlo Ersek vcpu->has_can_offline = true; /* lolspeak ftw */ 2496b4bf912aSIgor Mammedov transfer_vcpu(vcpu, true, path, &local_err); 2497*c3033fd3SEric Blake QAPI_LIST_APPEND(tail, vcpu); 2498d2baff62SLaszlo Ersek } 2499b4bf912aSIgor Mammedov g_free(path); 2500b4bf912aSIgor Mammedov } 2501d2baff62SLaszlo Ersek 2502d2baff62SLaszlo Ersek if (local_err == NULL) { 2503d2baff62SLaszlo Ersek /* there's no guest with zero VCPUs */ 2504d2baff62SLaszlo Ersek g_assert(head != NULL); 2505d2baff62SLaszlo Ersek return head; 2506d2baff62SLaszlo Ersek } 2507d2baff62SLaszlo Ersek 2508d2baff62SLaszlo Ersek qapi_free_GuestLogicalProcessorList(head); 2509d2baff62SLaszlo Ersek error_propagate(errp, local_err); 2510d2baff62SLaszlo Ersek return NULL; 2511d2baff62SLaszlo Ersek } 2512d2baff62SLaszlo Ersek 2513cbb65fc2SLaszlo Ersek int64_t qmp_guest_set_vcpus(GuestLogicalProcessorList *vcpus, Error **errp) 2514cbb65fc2SLaszlo Ersek { 2515cbb65fc2SLaszlo Ersek int64_t processed; 2516cbb65fc2SLaszlo Ersek Error *local_err = NULL; 2517cbb65fc2SLaszlo Ersek 2518cbb65fc2SLaszlo Ersek processed = 0; 2519cbb65fc2SLaszlo Ersek while (vcpus != NULL) { 2520b4bf912aSIgor Mammedov char *path = g_strdup_printf("/sys/devices/system/cpu/cpu%" PRId64 "/", 2521b4bf912aSIgor Mammedov vcpus->value->logical_id); 2522b4bf912aSIgor Mammedov 2523b4bf912aSIgor Mammedov transfer_vcpu(vcpus->value, false, path, &local_err); 2524b4bf912aSIgor Mammedov g_free(path); 2525cbb65fc2SLaszlo Ersek if (local_err != NULL) { 2526cbb65fc2SLaszlo Ersek break; 2527cbb65fc2SLaszlo Ersek } 2528cbb65fc2SLaszlo Ersek ++processed; 2529cbb65fc2SLaszlo Ersek vcpus = vcpus->next; 2530cbb65fc2SLaszlo Ersek } 2531cbb65fc2SLaszlo Ersek 2532cbb65fc2SLaszlo Ersek if (local_err != NULL) { 2533cbb65fc2SLaszlo Ersek if (processed == 0) { 2534cbb65fc2SLaszlo Ersek error_propagate(errp, local_err); 2535cbb65fc2SLaszlo Ersek } else { 2536cbb65fc2SLaszlo Ersek error_free(local_err); 2537cbb65fc2SLaszlo Ersek } 2538cbb65fc2SLaszlo Ersek } 2539cbb65fc2SLaszlo Ersek 2540cbb65fc2SLaszlo Ersek return processed; 2541cbb65fc2SLaszlo Ersek } 2542cbb65fc2SLaszlo Ersek 2543215a2771SDaniel P. Berrange void qmp_guest_set_user_password(const char *username, 2544215a2771SDaniel P. Berrange const char *password, 2545215a2771SDaniel P. Berrange bool crypted, 2546215a2771SDaniel P. Berrange Error **errp) 2547215a2771SDaniel P. Berrange { 2548215a2771SDaniel P. Berrange Error *local_err = NULL; 2549215a2771SDaniel P. Berrange char *passwd_path = NULL; 2550215a2771SDaniel P. Berrange pid_t pid; 2551215a2771SDaniel P. Berrange int status; 2552215a2771SDaniel P. Berrange int datafd[2] = { -1, -1 }; 2553215a2771SDaniel P. Berrange char *rawpasswddata = NULL; 2554215a2771SDaniel P. Berrange size_t rawpasswdlen; 2555215a2771SDaniel P. Berrange char *chpasswddata = NULL; 2556215a2771SDaniel P. Berrange size_t chpasswdlen; 2557215a2771SDaniel P. Berrange 2558920639caSDaniel P. Berrange rawpasswddata = (char *)qbase64_decode(password, -1, &rawpasswdlen, errp); 2559920639caSDaniel P. Berrange if (!rawpasswddata) { 2560920639caSDaniel P. Berrange return; 2561920639caSDaniel P. Berrange } 2562215a2771SDaniel P. Berrange rawpasswddata = g_renew(char, rawpasswddata, rawpasswdlen + 1); 2563215a2771SDaniel P. Berrange rawpasswddata[rawpasswdlen] = '\0'; 2564215a2771SDaniel P. Berrange 2565215a2771SDaniel P. Berrange if (strchr(rawpasswddata, '\n')) { 2566215a2771SDaniel P. Berrange error_setg(errp, "forbidden characters in raw password"); 2567215a2771SDaniel P. Berrange goto out; 2568215a2771SDaniel P. Berrange } 2569215a2771SDaniel P. Berrange 2570215a2771SDaniel P. Berrange if (strchr(username, '\n') || 2571215a2771SDaniel P. Berrange strchr(username, ':')) { 2572215a2771SDaniel P. Berrange error_setg(errp, "forbidden characters in username"); 2573215a2771SDaniel P. Berrange goto out; 2574215a2771SDaniel P. Berrange } 2575215a2771SDaniel P. Berrange 2576215a2771SDaniel P. Berrange chpasswddata = g_strdup_printf("%s:%s\n", username, rawpasswddata); 2577215a2771SDaniel P. Berrange chpasswdlen = strlen(chpasswddata); 2578215a2771SDaniel P. Berrange 2579215a2771SDaniel P. Berrange passwd_path = g_find_program_in_path("chpasswd"); 2580215a2771SDaniel P. Berrange 2581215a2771SDaniel P. Berrange if (!passwd_path) { 2582215a2771SDaniel P. Berrange error_setg(errp, "cannot find 'passwd' program in PATH"); 2583215a2771SDaniel P. Berrange goto out; 2584215a2771SDaniel P. Berrange } 2585215a2771SDaniel P. Berrange 2586215a2771SDaniel P. Berrange if (pipe(datafd) < 0) { 2587215a2771SDaniel P. Berrange error_setg(errp, "cannot create pipe FDs"); 2588215a2771SDaniel P. Berrange goto out; 2589215a2771SDaniel P. Berrange } 2590215a2771SDaniel P. Berrange 2591215a2771SDaniel P. Berrange pid = fork(); 2592215a2771SDaniel P. Berrange if (pid == 0) { 2593215a2771SDaniel P. Berrange close(datafd[1]); 2594215a2771SDaniel P. Berrange /* child */ 2595215a2771SDaniel P. Berrange setsid(); 2596215a2771SDaniel P. Berrange dup2(datafd[0], 0); 2597215a2771SDaniel P. Berrange reopen_fd_to_null(1); 2598215a2771SDaniel P. Berrange reopen_fd_to_null(2); 2599215a2771SDaniel P. Berrange 2600215a2771SDaniel P. Berrange if (crypted) { 2601215a2771SDaniel P. Berrange execle(passwd_path, "chpasswd", "-e", NULL, environ); 2602215a2771SDaniel P. Berrange } else { 2603215a2771SDaniel P. Berrange execle(passwd_path, "chpasswd", NULL, environ); 2604215a2771SDaniel P. Berrange } 2605215a2771SDaniel P. Berrange _exit(EXIT_FAILURE); 2606215a2771SDaniel P. Berrange } else if (pid < 0) { 2607215a2771SDaniel P. Berrange error_setg_errno(errp, errno, "failed to create child process"); 2608215a2771SDaniel P. Berrange goto out; 2609215a2771SDaniel P. Berrange } 2610215a2771SDaniel P. Berrange close(datafd[0]); 2611215a2771SDaniel P. Berrange datafd[0] = -1; 2612215a2771SDaniel P. Berrange 2613215a2771SDaniel P. Berrange if (qemu_write_full(datafd[1], chpasswddata, chpasswdlen) != chpasswdlen) { 2614215a2771SDaniel P. Berrange error_setg_errno(errp, errno, "cannot write new account password"); 2615215a2771SDaniel P. Berrange goto out; 2616215a2771SDaniel P. Berrange } 2617215a2771SDaniel P. Berrange close(datafd[1]); 2618215a2771SDaniel P. Berrange datafd[1] = -1; 2619215a2771SDaniel P. Berrange 2620215a2771SDaniel P. Berrange ga_wait_child(pid, &status, &local_err); 2621215a2771SDaniel P. Berrange if (local_err) { 2622215a2771SDaniel P. Berrange error_propagate(errp, local_err); 2623215a2771SDaniel P. Berrange goto out; 2624215a2771SDaniel P. Berrange } 2625215a2771SDaniel P. Berrange 2626215a2771SDaniel P. Berrange if (!WIFEXITED(status)) { 2627215a2771SDaniel P. Berrange error_setg(errp, "child process has terminated abnormally"); 2628215a2771SDaniel P. Berrange goto out; 2629215a2771SDaniel P. Berrange } 2630215a2771SDaniel P. Berrange 2631215a2771SDaniel P. Berrange if (WEXITSTATUS(status)) { 2632215a2771SDaniel P. Berrange error_setg(errp, "child process has failed to set user password"); 2633215a2771SDaniel P. Berrange goto out; 2634215a2771SDaniel P. Berrange } 2635215a2771SDaniel P. Berrange 2636215a2771SDaniel P. Berrange out: 2637215a2771SDaniel P. Berrange g_free(chpasswddata); 2638215a2771SDaniel P. Berrange g_free(rawpasswddata); 2639215a2771SDaniel P. Berrange g_free(passwd_path); 2640215a2771SDaniel P. Berrange if (datafd[0] != -1) { 2641215a2771SDaniel P. Berrange close(datafd[0]); 2642215a2771SDaniel P. Berrange } 2643215a2771SDaniel P. Berrange if (datafd[1] != -1) { 2644215a2771SDaniel P. Berrange close(datafd[1]); 2645215a2771SDaniel P. Berrange } 2646215a2771SDaniel P. Berrange } 2647215a2771SDaniel P. Berrange 2648bd240fcaSzhanghailiang static void ga_read_sysfs_file(int dirfd, const char *pathname, char *buf, 2649bd240fcaSzhanghailiang int size, Error **errp) 2650bd240fcaSzhanghailiang { 2651bd240fcaSzhanghailiang int fd; 2652bd240fcaSzhanghailiang int res; 2653bd240fcaSzhanghailiang 2654bd240fcaSzhanghailiang errno = 0; 2655bd240fcaSzhanghailiang fd = openat(dirfd, pathname, O_RDONLY); 2656bd240fcaSzhanghailiang if (fd == -1) { 2657bd240fcaSzhanghailiang error_setg_errno(errp, errno, "open sysfs file \"%s\"", pathname); 2658bd240fcaSzhanghailiang return; 2659bd240fcaSzhanghailiang } 2660bd240fcaSzhanghailiang 2661bd240fcaSzhanghailiang res = pread(fd, buf, size, 0); 2662bd240fcaSzhanghailiang if (res == -1) { 2663bd240fcaSzhanghailiang error_setg_errno(errp, errno, "pread sysfs file \"%s\"", pathname); 2664bd240fcaSzhanghailiang } else if (res == 0) { 2665bd240fcaSzhanghailiang error_setg(errp, "pread sysfs file \"%s\": unexpected EOF", pathname); 2666bd240fcaSzhanghailiang } 2667bd240fcaSzhanghailiang close(fd); 2668bd240fcaSzhanghailiang } 2669bd240fcaSzhanghailiang 2670bd240fcaSzhanghailiang static void ga_write_sysfs_file(int dirfd, const char *pathname, 2671bd240fcaSzhanghailiang const char *buf, int size, Error **errp) 2672bd240fcaSzhanghailiang { 2673bd240fcaSzhanghailiang int fd; 2674bd240fcaSzhanghailiang 2675bd240fcaSzhanghailiang errno = 0; 2676bd240fcaSzhanghailiang fd = openat(dirfd, pathname, O_WRONLY); 2677bd240fcaSzhanghailiang if (fd == -1) { 2678bd240fcaSzhanghailiang error_setg_errno(errp, errno, "open sysfs file \"%s\"", pathname); 2679bd240fcaSzhanghailiang return; 2680bd240fcaSzhanghailiang } 2681bd240fcaSzhanghailiang 2682bd240fcaSzhanghailiang if (pwrite(fd, buf, size, 0) == -1) { 2683bd240fcaSzhanghailiang error_setg_errno(errp, errno, "pwrite sysfs file \"%s\"", pathname); 2684bd240fcaSzhanghailiang } 2685bd240fcaSzhanghailiang 2686bd240fcaSzhanghailiang close(fd); 2687bd240fcaSzhanghailiang } 2688bd240fcaSzhanghailiang 2689bd240fcaSzhanghailiang /* Transfer online/offline status between @mem_blk and the guest system. 2690bd240fcaSzhanghailiang * 2691bd240fcaSzhanghailiang * On input either @errp or *@errp must be NULL. 2692bd240fcaSzhanghailiang * 2693bd240fcaSzhanghailiang * In system-to-@mem_blk direction, the following @mem_blk fields are accessed: 2694bd240fcaSzhanghailiang * - R: mem_blk->phys_index 2695bd240fcaSzhanghailiang * - W: mem_blk->online 2696bd240fcaSzhanghailiang * - W: mem_blk->can_offline 2697bd240fcaSzhanghailiang * 2698bd240fcaSzhanghailiang * In @mem_blk-to-system direction, the following @mem_blk fields are accessed: 2699bd240fcaSzhanghailiang * - R: mem_blk->phys_index 2700bd240fcaSzhanghailiang * - R: mem_blk->online 2701bd240fcaSzhanghailiang *- R: mem_blk->can_offline 2702bd240fcaSzhanghailiang * Written members remain unmodified on error. 2703bd240fcaSzhanghailiang */ 2704bd240fcaSzhanghailiang static void transfer_memory_block(GuestMemoryBlock *mem_blk, bool sys2memblk, 2705bd240fcaSzhanghailiang GuestMemoryBlockResponse *result, 2706bd240fcaSzhanghailiang Error **errp) 2707bd240fcaSzhanghailiang { 2708bd240fcaSzhanghailiang char *dirpath; 2709bd240fcaSzhanghailiang int dirfd; 2710bd240fcaSzhanghailiang char *status; 2711bd240fcaSzhanghailiang Error *local_err = NULL; 2712bd240fcaSzhanghailiang 2713bd240fcaSzhanghailiang if (!sys2memblk) { 2714bd240fcaSzhanghailiang DIR *dp; 2715bd240fcaSzhanghailiang 2716bd240fcaSzhanghailiang if (!result) { 2717bd240fcaSzhanghailiang error_setg(errp, "Internal error, 'result' should not be NULL"); 2718bd240fcaSzhanghailiang return; 2719bd240fcaSzhanghailiang } 2720bd240fcaSzhanghailiang errno = 0; 2721bd240fcaSzhanghailiang dp = opendir("/sys/devices/system/memory/"); 2722bd240fcaSzhanghailiang /* if there is no 'memory' directory in sysfs, 2723bd240fcaSzhanghailiang * we think this VM does not support online/offline memory block, 2724bd240fcaSzhanghailiang * any other solution? 2725bd240fcaSzhanghailiang */ 27269879f5acSPhilippe Mathieu-Daudé if (!dp) { 27279879f5acSPhilippe Mathieu-Daudé if (errno == ENOENT) { 2728bd240fcaSzhanghailiang result->response = 2729bd240fcaSzhanghailiang GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_NOT_SUPPORTED; 27309879f5acSPhilippe Mathieu-Daudé } 2731bd240fcaSzhanghailiang goto out1; 2732bd240fcaSzhanghailiang } 2733bd240fcaSzhanghailiang closedir(dp); 2734bd240fcaSzhanghailiang } 2735bd240fcaSzhanghailiang 2736bd240fcaSzhanghailiang dirpath = g_strdup_printf("/sys/devices/system/memory/memory%" PRId64 "/", 2737bd240fcaSzhanghailiang mem_blk->phys_index); 2738bd240fcaSzhanghailiang dirfd = open(dirpath, O_RDONLY | O_DIRECTORY); 2739bd240fcaSzhanghailiang if (dirfd == -1) { 2740bd240fcaSzhanghailiang if (sys2memblk) { 2741bd240fcaSzhanghailiang error_setg_errno(errp, errno, "open(\"%s\")", dirpath); 2742bd240fcaSzhanghailiang } else { 2743bd240fcaSzhanghailiang if (errno == ENOENT) { 2744bd240fcaSzhanghailiang result->response = GUEST_MEMORY_BLOCK_RESPONSE_TYPE_NOT_FOUND; 2745bd240fcaSzhanghailiang } else { 2746bd240fcaSzhanghailiang result->response = 2747bd240fcaSzhanghailiang GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_FAILED; 2748bd240fcaSzhanghailiang } 2749bd240fcaSzhanghailiang } 2750bd240fcaSzhanghailiang g_free(dirpath); 2751bd240fcaSzhanghailiang goto out1; 2752bd240fcaSzhanghailiang } 2753bd240fcaSzhanghailiang g_free(dirpath); 2754bd240fcaSzhanghailiang 2755bd240fcaSzhanghailiang status = g_malloc0(10); 2756bd240fcaSzhanghailiang ga_read_sysfs_file(dirfd, "state", status, 10, &local_err); 2757bd240fcaSzhanghailiang if (local_err) { 2758bd240fcaSzhanghailiang /* treat with sysfs file that not exist in old kernel */ 2759bd240fcaSzhanghailiang if (errno == ENOENT) { 2760bd240fcaSzhanghailiang error_free(local_err); 2761bd240fcaSzhanghailiang if (sys2memblk) { 2762bd240fcaSzhanghailiang mem_blk->online = true; 2763bd240fcaSzhanghailiang mem_blk->can_offline = false; 2764bd240fcaSzhanghailiang } else if (!mem_blk->online) { 2765bd240fcaSzhanghailiang result->response = 2766bd240fcaSzhanghailiang GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_NOT_SUPPORTED; 2767bd240fcaSzhanghailiang } 2768bd240fcaSzhanghailiang } else { 2769bd240fcaSzhanghailiang if (sys2memblk) { 2770bd240fcaSzhanghailiang error_propagate(errp, local_err); 2771bd240fcaSzhanghailiang } else { 2772b368123dSMarkus Armbruster error_free(local_err); 2773bd240fcaSzhanghailiang result->response = 2774bd240fcaSzhanghailiang GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_FAILED; 2775bd240fcaSzhanghailiang } 2776bd240fcaSzhanghailiang } 2777bd240fcaSzhanghailiang goto out2; 2778bd240fcaSzhanghailiang } 2779bd240fcaSzhanghailiang 2780bd240fcaSzhanghailiang if (sys2memblk) { 2781bd240fcaSzhanghailiang char removable = '0'; 2782bd240fcaSzhanghailiang 2783bd240fcaSzhanghailiang mem_blk->online = (strncmp(status, "online", 6) == 0); 2784bd240fcaSzhanghailiang 2785bd240fcaSzhanghailiang ga_read_sysfs_file(dirfd, "removable", &removable, 1, &local_err); 2786bd240fcaSzhanghailiang if (local_err) { 278767cc32ebSVeres Lajos /* if no 'removable' file, it doesn't support offline mem blk */ 2788bd240fcaSzhanghailiang if (errno == ENOENT) { 2789bd240fcaSzhanghailiang error_free(local_err); 2790bd240fcaSzhanghailiang mem_blk->can_offline = false; 2791bd240fcaSzhanghailiang } else { 2792bd240fcaSzhanghailiang error_propagate(errp, local_err); 2793bd240fcaSzhanghailiang } 2794bd240fcaSzhanghailiang } else { 2795bd240fcaSzhanghailiang mem_blk->can_offline = (removable != '0'); 2796bd240fcaSzhanghailiang } 2797bd240fcaSzhanghailiang } else { 2798bd240fcaSzhanghailiang if (mem_blk->online != (strncmp(status, "online", 6) == 0)) { 27997064024dSMarc-André Lureau const char *new_state = mem_blk->online ? "online" : "offline"; 2800bd240fcaSzhanghailiang 2801bd240fcaSzhanghailiang ga_write_sysfs_file(dirfd, "state", new_state, strlen(new_state), 2802bd240fcaSzhanghailiang &local_err); 2803bd240fcaSzhanghailiang if (local_err) { 2804bd240fcaSzhanghailiang error_free(local_err); 2805bd240fcaSzhanghailiang result->response = 2806bd240fcaSzhanghailiang GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_FAILED; 2807bd240fcaSzhanghailiang goto out2; 2808bd240fcaSzhanghailiang } 2809bd240fcaSzhanghailiang 2810bd240fcaSzhanghailiang result->response = GUEST_MEMORY_BLOCK_RESPONSE_TYPE_SUCCESS; 2811bd240fcaSzhanghailiang result->has_error_code = false; 2812bd240fcaSzhanghailiang } /* otherwise pretend successful re-(on|off)-lining */ 2813bd240fcaSzhanghailiang } 2814bd240fcaSzhanghailiang g_free(status); 2815bd240fcaSzhanghailiang close(dirfd); 2816bd240fcaSzhanghailiang return; 2817bd240fcaSzhanghailiang 2818bd240fcaSzhanghailiang out2: 2819bd240fcaSzhanghailiang g_free(status); 2820bd240fcaSzhanghailiang close(dirfd); 2821bd240fcaSzhanghailiang out1: 2822bd240fcaSzhanghailiang if (!sys2memblk) { 2823bd240fcaSzhanghailiang result->has_error_code = true; 2824bd240fcaSzhanghailiang result->error_code = errno; 2825bd240fcaSzhanghailiang } 2826bd240fcaSzhanghailiang } 2827bd240fcaSzhanghailiang 2828a065aaa9Szhanghailiang GuestMemoryBlockList *qmp_guest_get_memory_blocks(Error **errp) 2829a065aaa9Szhanghailiang { 2830*c3033fd3SEric Blake GuestMemoryBlockList *head, **tail; 2831bd240fcaSzhanghailiang Error *local_err = NULL; 2832bd240fcaSzhanghailiang struct dirent *de; 2833bd240fcaSzhanghailiang DIR *dp; 2834bd240fcaSzhanghailiang 2835bd240fcaSzhanghailiang head = NULL; 2836*c3033fd3SEric Blake tail = &head; 2837bd240fcaSzhanghailiang 2838bd240fcaSzhanghailiang dp = opendir("/sys/devices/system/memory/"); 2839bd240fcaSzhanghailiang if (!dp) { 2840f693fe6eSMichael Roth /* it's ok if this happens to be a system that doesn't expose 2841f693fe6eSMichael Roth * memory blocks via sysfs, but otherwise we should report 2842f693fe6eSMichael Roth * an error 2843f693fe6eSMichael Roth */ 2844f693fe6eSMichael Roth if (errno != ENOENT) { 2845bd240fcaSzhanghailiang error_setg_errno(errp, errno, "Can't open directory" 28469af9e0feSMarkus Armbruster "\"/sys/devices/system/memory/\""); 2847f693fe6eSMichael Roth } 2848bd240fcaSzhanghailiang return NULL; 2849bd240fcaSzhanghailiang } 2850bd240fcaSzhanghailiang 2851bd240fcaSzhanghailiang /* Note: the phys_index of memory block may be discontinuous, 2852bd240fcaSzhanghailiang * this is because a memblk is the unit of the Sparse Memory design, which 2853bd240fcaSzhanghailiang * allows discontinuous memory ranges (ex. NUMA), so here we should 2854bd240fcaSzhanghailiang * traverse the memory block directory. 2855bd240fcaSzhanghailiang */ 2856bd240fcaSzhanghailiang while ((de = readdir(dp)) != NULL) { 2857bd240fcaSzhanghailiang GuestMemoryBlock *mem_blk; 2858bd240fcaSzhanghailiang 2859bd240fcaSzhanghailiang if ((strncmp(de->d_name, "memory", 6) != 0) || 2860bd240fcaSzhanghailiang !(de->d_type & DT_DIR)) { 2861bd240fcaSzhanghailiang continue; 2862bd240fcaSzhanghailiang } 2863bd240fcaSzhanghailiang 2864bd240fcaSzhanghailiang mem_blk = g_malloc0(sizeof *mem_blk); 2865bd240fcaSzhanghailiang /* The d_name is "memoryXXX", phys_index is block id, same as XXX */ 2866bd240fcaSzhanghailiang mem_blk->phys_index = strtoul(&de->d_name[6], NULL, 10); 2867bd240fcaSzhanghailiang mem_blk->has_can_offline = true; /* lolspeak ftw */ 2868bd240fcaSzhanghailiang transfer_memory_block(mem_blk, true, NULL, &local_err); 28694155c998SMarkus Armbruster if (local_err) { 28704155c998SMarkus Armbruster break; 28714155c998SMarkus Armbruster } 2872bd240fcaSzhanghailiang 2873*c3033fd3SEric Blake QAPI_LIST_APPEND(tail, mem_blk); 2874bd240fcaSzhanghailiang } 2875bd240fcaSzhanghailiang 2876bd240fcaSzhanghailiang closedir(dp); 2877bd240fcaSzhanghailiang if (local_err == NULL) { 2878bd240fcaSzhanghailiang /* there's no guest with zero memory blocks */ 2879bd240fcaSzhanghailiang if (head == NULL) { 2880bd240fcaSzhanghailiang error_setg(errp, "guest reported zero memory blocks!"); 2881bd240fcaSzhanghailiang } 2882bd240fcaSzhanghailiang return head; 2883bd240fcaSzhanghailiang } 2884bd240fcaSzhanghailiang 2885bd240fcaSzhanghailiang qapi_free_GuestMemoryBlockList(head); 2886bd240fcaSzhanghailiang error_propagate(errp, local_err); 2887a065aaa9Szhanghailiang return NULL; 2888a065aaa9Szhanghailiang } 2889a065aaa9Szhanghailiang 2890a065aaa9Szhanghailiang GuestMemoryBlockResponseList * 2891a065aaa9Szhanghailiang qmp_guest_set_memory_blocks(GuestMemoryBlockList *mem_blks, Error **errp) 2892a065aaa9Szhanghailiang { 2893*c3033fd3SEric Blake GuestMemoryBlockResponseList *head, **tail; 289432ca7927Szhanghailiang Error *local_err = NULL; 289532ca7927Szhanghailiang 289632ca7927Szhanghailiang head = NULL; 2897*c3033fd3SEric Blake tail = &head; 289832ca7927Szhanghailiang 289932ca7927Szhanghailiang while (mem_blks != NULL) { 290032ca7927Szhanghailiang GuestMemoryBlockResponse *result; 290132ca7927Szhanghailiang GuestMemoryBlock *current_mem_blk = mem_blks->value; 290232ca7927Szhanghailiang 290332ca7927Szhanghailiang result = g_malloc0(sizeof(*result)); 290432ca7927Szhanghailiang result->phys_index = current_mem_blk->phys_index; 290532ca7927Szhanghailiang transfer_memory_block(current_mem_blk, false, result, &local_err); 290632ca7927Szhanghailiang if (local_err) { /* should never happen */ 290732ca7927Szhanghailiang goto err; 290832ca7927Szhanghailiang } 290932ca7927Szhanghailiang 2910*c3033fd3SEric Blake QAPI_LIST_APPEND(tail, result); 291132ca7927Szhanghailiang mem_blks = mem_blks->next; 291232ca7927Szhanghailiang } 291332ca7927Szhanghailiang 291432ca7927Szhanghailiang return head; 291532ca7927Szhanghailiang err: 291632ca7927Szhanghailiang qapi_free_GuestMemoryBlockResponseList(head); 291732ca7927Szhanghailiang error_propagate(errp, local_err); 2918a065aaa9Szhanghailiang return NULL; 2919a065aaa9Szhanghailiang } 2920a065aaa9Szhanghailiang 2921a065aaa9Szhanghailiang GuestMemoryBlockInfo *qmp_guest_get_memory_block_info(Error **errp) 2922a065aaa9Szhanghailiang { 2923ef82b60bSzhanghailiang Error *local_err = NULL; 2924ef82b60bSzhanghailiang char *dirpath; 2925ef82b60bSzhanghailiang int dirfd; 2926ef82b60bSzhanghailiang char *buf; 2927ef82b60bSzhanghailiang GuestMemoryBlockInfo *info; 2928ef82b60bSzhanghailiang 2929ef82b60bSzhanghailiang dirpath = g_strdup_printf("/sys/devices/system/memory/"); 2930ef82b60bSzhanghailiang dirfd = open(dirpath, O_RDONLY | O_DIRECTORY); 2931ef82b60bSzhanghailiang if (dirfd == -1) { 2932ef82b60bSzhanghailiang error_setg_errno(errp, errno, "open(\"%s\")", dirpath); 2933ef82b60bSzhanghailiang g_free(dirpath); 2934a065aaa9Szhanghailiang return NULL; 2935a065aaa9Szhanghailiang } 2936ef82b60bSzhanghailiang g_free(dirpath); 2937ef82b60bSzhanghailiang 2938ef82b60bSzhanghailiang buf = g_malloc0(20); 2939ef82b60bSzhanghailiang ga_read_sysfs_file(dirfd, "block_size_bytes", buf, 20, &local_err); 29408ce1ee46SShannon Zhao close(dirfd); 2941ef82b60bSzhanghailiang if (local_err) { 2942ef82b60bSzhanghailiang g_free(buf); 2943ef82b60bSzhanghailiang error_propagate(errp, local_err); 2944ef82b60bSzhanghailiang return NULL; 2945ef82b60bSzhanghailiang } 2946ef82b60bSzhanghailiang 2947ef82b60bSzhanghailiang info = g_new0(GuestMemoryBlockInfo, 1); 2948ef82b60bSzhanghailiang info->size = strtol(buf, NULL, 16); /* the unit is bytes */ 2949ef82b60bSzhanghailiang 2950ef82b60bSzhanghailiang g_free(buf); 2951ef82b60bSzhanghailiang 2952ef82b60bSzhanghailiang return info; 2953ef82b60bSzhanghailiang } 2954a065aaa9Szhanghailiang 2955e72c3f2eSMichael Roth #else /* defined(__linux__) */ 2956e72c3f2eSMichael Roth 295777dbc81bSMarkus Armbruster void qmp_guest_suspend_disk(Error **errp) 2958e72c3f2eSMichael Roth { 2959c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2960e72c3f2eSMichael Roth } 2961e72c3f2eSMichael Roth 296277dbc81bSMarkus Armbruster void qmp_guest_suspend_ram(Error **errp) 2963e72c3f2eSMichael Roth { 2964c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2965e72c3f2eSMichael Roth } 2966e72c3f2eSMichael Roth 296777dbc81bSMarkus Armbruster void qmp_guest_suspend_hybrid(Error **errp) 2968e72c3f2eSMichael Roth { 2969c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2970e72c3f2eSMichael Roth } 2971e72c3f2eSMichael Roth 2972e72c3f2eSMichael Roth GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp) 2973e72c3f2eSMichael Roth { 2974c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2975e72c3f2eSMichael Roth return NULL; 2976e72c3f2eSMichael Roth } 2977e72c3f2eSMichael Roth 2978d2baff62SLaszlo Ersek GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp) 2979d2baff62SLaszlo Ersek { 2980c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2981d2baff62SLaszlo Ersek return NULL; 2982d2baff62SLaszlo Ersek } 2983d2baff62SLaszlo Ersek 2984cbb65fc2SLaszlo Ersek int64_t qmp_guest_set_vcpus(GuestLogicalProcessorList *vcpus, Error **errp) 2985cbb65fc2SLaszlo Ersek { 2986c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2987cbb65fc2SLaszlo Ersek return -1; 2988cbb65fc2SLaszlo Ersek } 2989cbb65fc2SLaszlo Ersek 2990215a2771SDaniel P. Berrange void qmp_guest_set_user_password(const char *username, 2991215a2771SDaniel P. Berrange const char *password, 2992215a2771SDaniel P. Berrange bool crypted, 2993215a2771SDaniel P. Berrange Error **errp) 2994215a2771SDaniel P. Berrange { 2995c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2996215a2771SDaniel P. Berrange } 2997215a2771SDaniel P. Berrange 2998a065aaa9Szhanghailiang GuestMemoryBlockList *qmp_guest_get_memory_blocks(Error **errp) 2999a065aaa9Szhanghailiang { 3000c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 3001a065aaa9Szhanghailiang return NULL; 3002a065aaa9Szhanghailiang } 3003a065aaa9Szhanghailiang 3004a065aaa9Szhanghailiang GuestMemoryBlockResponseList * 3005a065aaa9Szhanghailiang qmp_guest_set_memory_blocks(GuestMemoryBlockList *mem_blks, Error **errp) 3006a065aaa9Szhanghailiang { 3007c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 3008a065aaa9Szhanghailiang return NULL; 3009a065aaa9Szhanghailiang } 3010a065aaa9Szhanghailiang 3011a065aaa9Szhanghailiang GuestMemoryBlockInfo *qmp_guest_get_memory_block_info(Error **errp) 3012a065aaa9Szhanghailiang { 3013c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 3014a065aaa9Szhanghailiang return NULL; 3015a065aaa9Szhanghailiang } 3016a065aaa9Szhanghailiang 3017e72c3f2eSMichael Roth #endif 3018e72c3f2eSMichael Roth 3019d35d4cb5SMichael Roth #if !defined(CONFIG_FSFREEZE) 3020d35d4cb5SMichael Roth 302146d4c572STomoki Sekiyama GuestFilesystemInfoList *qmp_guest_get_fsinfo(Error **errp) 302246d4c572STomoki Sekiyama { 3023c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 302446d4c572STomoki Sekiyama return NULL; 302546d4c572STomoki Sekiyama } 302646d4c572STomoki Sekiyama 302777dbc81bSMarkus Armbruster GuestFsfreezeStatus qmp_guest_fsfreeze_status(Error **errp) 3028d35d4cb5SMichael Roth { 3029c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 3030d35d4cb5SMichael Roth 3031d35d4cb5SMichael Roth return 0; 3032d35d4cb5SMichael Roth } 3033d35d4cb5SMichael Roth 303477dbc81bSMarkus Armbruster int64_t qmp_guest_fsfreeze_freeze(Error **errp) 3035d35d4cb5SMichael Roth { 3036c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 3037d35d4cb5SMichael Roth 3038d35d4cb5SMichael Roth return 0; 3039d35d4cb5SMichael Roth } 3040d35d4cb5SMichael Roth 3041e99bce20STomoki Sekiyama int64_t qmp_guest_fsfreeze_freeze_list(bool has_mountpoints, 3042e99bce20STomoki Sekiyama strList *mountpoints, 3043e99bce20STomoki Sekiyama Error **errp) 3044e99bce20STomoki Sekiyama { 3045c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 3046e99bce20STomoki Sekiyama 3047e99bce20STomoki Sekiyama return 0; 3048e99bce20STomoki Sekiyama } 3049e99bce20STomoki Sekiyama 305077dbc81bSMarkus Armbruster int64_t qmp_guest_fsfreeze_thaw(Error **errp) 3051d35d4cb5SMichael Roth { 3052c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 3053d35d4cb5SMichael Roth 3054d35d4cb5SMichael Roth return 0; 3055d35d4cb5SMichael Roth } 3056fed39564STomáš Golembiovský 3057fed39564STomáš Golembiovský GuestDiskInfoList *qmp_guest_get_disks(Error **errp) 3058fed39564STomáš Golembiovský { 3059fed39564STomáš Golembiovský error_setg(errp, QERR_UNSUPPORTED); 3060fed39564STomáš Golembiovský return NULL; 3061fed39564STomáš Golembiovský } 3062fed39564STomáš Golembiovský 3063eab5fd59SPaolo Bonzini #endif /* CONFIG_FSFREEZE */ 3064d35d4cb5SMichael Roth 3065eab5fd59SPaolo Bonzini #if !defined(CONFIG_FSTRIM) 3066e82855d9SJustin Ossevoort GuestFilesystemTrimResponse * 3067e82855d9SJustin Ossevoort qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **errp) 3068eab5fd59SPaolo Bonzini { 3069c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 3070e82855d9SJustin Ossevoort return NULL; 3071eab5fd59SPaolo Bonzini } 3072d35d4cb5SMichael Roth #endif 3073d35d4cb5SMichael Roth 30741281c08aSTomoki Sekiyama /* add unsupported commands to the blacklist */ 30751281c08aSTomoki Sekiyama GList *ga_command_blacklist_init(GList *blacklist) 30761281c08aSTomoki Sekiyama { 30771281c08aSTomoki Sekiyama #if !defined(__linux__) 30781281c08aSTomoki Sekiyama { 30791281c08aSTomoki Sekiyama const char *list[] = { 30801281c08aSTomoki Sekiyama "guest-suspend-disk", "guest-suspend-ram", 30811281c08aSTomoki Sekiyama "guest-suspend-hybrid", "guest-network-get-interfaces", 30820dd38a03Szhanghailiang "guest-get-vcpus", "guest-set-vcpus", 30830dd38a03Szhanghailiang "guest-get-memory-blocks", "guest-set-memory-blocks", 308428d8dd35SBasil Salman "guest-get-memory-block-size", "guest-get-memory-block-info", 308528d8dd35SBasil Salman NULL}; 30861281c08aSTomoki Sekiyama char **p = (char **)list; 30871281c08aSTomoki Sekiyama 30881281c08aSTomoki Sekiyama while (*p) { 30894bca81ceSMarc-André Lureau blacklist = g_list_append(blacklist, g_strdup(*p++)); 30901281c08aSTomoki Sekiyama } 30911281c08aSTomoki Sekiyama } 30921281c08aSTomoki Sekiyama #endif 30931281c08aSTomoki Sekiyama 30941281c08aSTomoki Sekiyama #if !defined(CONFIG_FSFREEZE) 30951281c08aSTomoki Sekiyama { 30961281c08aSTomoki Sekiyama const char *list[] = { 30971281c08aSTomoki Sekiyama "guest-get-fsinfo", "guest-fsfreeze-status", 30981281c08aSTomoki Sekiyama "guest-fsfreeze-freeze", "guest-fsfreeze-freeze-list", 3099fed39564STomáš Golembiovský "guest-fsfreeze-thaw", "guest-get-fsinfo", 3100fed39564STomáš Golembiovský "guest-get-disks", NULL}; 31011281c08aSTomoki Sekiyama char **p = (char **)list; 31021281c08aSTomoki Sekiyama 31031281c08aSTomoki Sekiyama while (*p) { 31044bca81ceSMarc-André Lureau blacklist = g_list_append(blacklist, g_strdup(*p++)); 31051281c08aSTomoki Sekiyama } 31061281c08aSTomoki Sekiyama } 31071281c08aSTomoki Sekiyama #endif 31081281c08aSTomoki Sekiyama 31091281c08aSTomoki Sekiyama #if !defined(CONFIG_FSTRIM) 31104bca81ceSMarc-André Lureau blacklist = g_list_append(blacklist, g_strdup("guest-fstrim")); 31111281c08aSTomoki Sekiyama #endif 31121281c08aSTomoki Sekiyama 31132e4211ceSTomáš Golembiovský blacklist = g_list_append(blacklist, g_strdup("guest-get-devices")); 31142e4211ceSTomáš Golembiovský 31151281c08aSTomoki Sekiyama return blacklist; 31161281c08aSTomoki Sekiyama } 31171281c08aSTomoki Sekiyama 3118c216e5adSMichael Roth /* register init/cleanup routines for stateful command groups */ 3119c216e5adSMichael Roth void ga_command_state_init(GAState *s, GACommandState *cs) 3120c216e5adSMichael Roth { 3121c216e5adSMichael Roth #if defined(CONFIG_FSFREEZE) 3122f22d85e9SMichael Roth ga_command_state_add(cs, NULL, guest_fsfreeze_cleanup); 3123c216e5adSMichael Roth #endif 3124c216e5adSMichael Roth } 3125161a56a9SVinzenz Feenstra 3126e674605fSTomáš Golembiovský #ifdef HAVE_UTMPX 3127e674605fSTomáš Golembiovský 3128161a56a9SVinzenz Feenstra #define QGA_MICRO_SECOND_TO_SECOND 1000000 3129161a56a9SVinzenz Feenstra 3130161a56a9SVinzenz Feenstra static double ga_get_login_time(struct utmpx *user_info) 3131161a56a9SVinzenz Feenstra { 3132161a56a9SVinzenz Feenstra double seconds = (double)user_info->ut_tv.tv_sec; 3133161a56a9SVinzenz Feenstra double useconds = (double)user_info->ut_tv.tv_usec; 3134161a56a9SVinzenz Feenstra useconds /= QGA_MICRO_SECOND_TO_SECOND; 3135161a56a9SVinzenz Feenstra return seconds + useconds; 3136161a56a9SVinzenz Feenstra } 3137161a56a9SVinzenz Feenstra 3138b90abbacSVladimir Sementsov-Ogievskiy GuestUserList *qmp_guest_get_users(Error **errp) 3139161a56a9SVinzenz Feenstra { 3140161a56a9SVinzenz Feenstra GHashTable *cache = NULL; 3141161a56a9SVinzenz Feenstra GuestUserList *head = NULL, *cur_item = NULL; 3142161a56a9SVinzenz Feenstra struct utmpx *user_info = NULL; 3143161a56a9SVinzenz Feenstra gpointer value = NULL; 3144161a56a9SVinzenz Feenstra GuestUser *user = NULL; 3145161a56a9SVinzenz Feenstra GuestUserList *item = NULL; 3146161a56a9SVinzenz Feenstra double login_time = 0; 3147161a56a9SVinzenz Feenstra 3148161a56a9SVinzenz Feenstra cache = g_hash_table_new(g_str_hash, g_str_equal); 3149161a56a9SVinzenz Feenstra setutxent(); 3150161a56a9SVinzenz Feenstra 3151161a56a9SVinzenz Feenstra for (;;) { 3152161a56a9SVinzenz Feenstra user_info = getutxent(); 3153161a56a9SVinzenz Feenstra if (user_info == NULL) { 3154161a56a9SVinzenz Feenstra break; 3155161a56a9SVinzenz Feenstra } else if (user_info->ut_type != USER_PROCESS) { 3156161a56a9SVinzenz Feenstra continue; 3157161a56a9SVinzenz Feenstra } else if (g_hash_table_contains(cache, user_info->ut_user)) { 3158161a56a9SVinzenz Feenstra value = g_hash_table_lookup(cache, user_info->ut_user); 3159161a56a9SVinzenz Feenstra user = (GuestUser *)value; 3160161a56a9SVinzenz Feenstra login_time = ga_get_login_time(user_info); 3161161a56a9SVinzenz Feenstra /* We're ensuring the earliest login time to be sent */ 3162161a56a9SVinzenz Feenstra if (login_time < user->login_time) { 3163161a56a9SVinzenz Feenstra user->login_time = login_time; 3164161a56a9SVinzenz Feenstra } 3165161a56a9SVinzenz Feenstra continue; 3166161a56a9SVinzenz Feenstra } 3167161a56a9SVinzenz Feenstra 3168161a56a9SVinzenz Feenstra item = g_new0(GuestUserList, 1); 3169161a56a9SVinzenz Feenstra item->value = g_new0(GuestUser, 1); 3170161a56a9SVinzenz Feenstra item->value->user = g_strdup(user_info->ut_user); 3171161a56a9SVinzenz Feenstra item->value->login_time = ga_get_login_time(user_info); 3172161a56a9SVinzenz Feenstra 3173161a56a9SVinzenz Feenstra g_hash_table_insert(cache, item->value->user, item->value); 3174161a56a9SVinzenz Feenstra 3175161a56a9SVinzenz Feenstra if (!cur_item) { 3176161a56a9SVinzenz Feenstra head = cur_item = item; 3177161a56a9SVinzenz Feenstra } else { 3178161a56a9SVinzenz Feenstra cur_item->next = item; 3179161a56a9SVinzenz Feenstra cur_item = item; 3180161a56a9SVinzenz Feenstra } 3181161a56a9SVinzenz Feenstra } 3182161a56a9SVinzenz Feenstra endutxent(); 3183161a56a9SVinzenz Feenstra g_hash_table_destroy(cache); 3184161a56a9SVinzenz Feenstra return head; 3185161a56a9SVinzenz Feenstra } 3186e674605fSTomáš Golembiovský 3187e674605fSTomáš Golembiovský #else 3188e674605fSTomáš Golembiovský 3189e674605fSTomáš Golembiovský GuestUserList *qmp_guest_get_users(Error **errp) 3190e674605fSTomáš Golembiovský { 3191e674605fSTomáš Golembiovský error_setg(errp, QERR_UNSUPPORTED); 3192e674605fSTomáš Golembiovský return NULL; 3193e674605fSTomáš Golembiovský } 3194e674605fSTomáš Golembiovský 3195e674605fSTomáš Golembiovský #endif 31969848f797STomáš Golembiovský 31979848f797STomáš Golembiovský /* Replace escaped special characters with theire real values. The replacement 31989848f797STomáš Golembiovský * is done in place -- returned value is in the original string. 31999848f797STomáš Golembiovský */ 32009848f797STomáš Golembiovský static void ga_osrelease_replace_special(gchar *value) 32019848f797STomáš Golembiovský { 32029848f797STomáš Golembiovský gchar *p, *p2, quote; 32039848f797STomáš Golembiovský 32049848f797STomáš Golembiovský /* Trim the string at first space or semicolon if it is not enclosed in 32059848f797STomáš Golembiovský * single or double quotes. */ 32069848f797STomáš Golembiovský if ((value[0] != '"') || (value[0] == '\'')) { 32079848f797STomáš Golembiovský p = strchr(value, ' '); 32089848f797STomáš Golembiovský if (p != NULL) { 32099848f797STomáš Golembiovský *p = 0; 32109848f797STomáš Golembiovský } 32119848f797STomáš Golembiovský p = strchr(value, ';'); 32129848f797STomáš Golembiovský if (p != NULL) { 32139848f797STomáš Golembiovský *p = 0; 32149848f797STomáš Golembiovský } 32159848f797STomáš Golembiovský return; 32169848f797STomáš Golembiovský } 32179848f797STomáš Golembiovský 32189848f797STomáš Golembiovský quote = value[0]; 32199848f797STomáš Golembiovský p2 = value; 32209848f797STomáš Golembiovský p = value + 1; 32219848f797STomáš Golembiovský while (*p != 0) { 32229848f797STomáš Golembiovský if (*p == '\\') { 32239848f797STomáš Golembiovský p++; 32249848f797STomáš Golembiovský switch (*p) { 32259848f797STomáš Golembiovský case '$': 32269848f797STomáš Golembiovský case '\'': 32279848f797STomáš Golembiovský case '"': 32289848f797STomáš Golembiovský case '\\': 32299848f797STomáš Golembiovský case '`': 32309848f797STomáš Golembiovský break; 32319848f797STomáš Golembiovský default: 32329848f797STomáš Golembiovský /* Keep literal backslash followed by whatever is there */ 32339848f797STomáš Golembiovský p--; 32349848f797STomáš Golembiovský break; 32359848f797STomáš Golembiovský } 32369848f797STomáš Golembiovský } else if (*p == quote) { 32379848f797STomáš Golembiovský *p2 = 0; 32389848f797STomáš Golembiovský break; 32399848f797STomáš Golembiovský } 32409848f797STomáš Golembiovský *(p2++) = *(p++); 32419848f797STomáš Golembiovský } 32429848f797STomáš Golembiovský } 32439848f797STomáš Golembiovský 32449848f797STomáš Golembiovský static GKeyFile *ga_parse_osrelease(const char *fname) 32459848f797STomáš Golembiovský { 32469848f797STomáš Golembiovský gchar *content = NULL; 32479848f797STomáš Golembiovský gchar *content2 = NULL; 32489848f797STomáš Golembiovský GError *err = NULL; 32499848f797STomáš Golembiovský GKeyFile *keys = g_key_file_new(); 32509848f797STomáš Golembiovský const char *group = "[os-release]\n"; 32519848f797STomáš Golembiovský 32529848f797STomáš Golembiovský if (!g_file_get_contents(fname, &content, NULL, &err)) { 32539848f797STomáš Golembiovský slog("failed to read '%s', error: %s", fname, err->message); 32549848f797STomáš Golembiovský goto fail; 32559848f797STomáš Golembiovský } 32569848f797STomáš Golembiovský 32579848f797STomáš Golembiovský if (!g_utf8_validate(content, -1, NULL)) { 32589848f797STomáš Golembiovský slog("file is not utf-8 encoded: %s", fname); 32599848f797STomáš Golembiovský goto fail; 32609848f797STomáš Golembiovský } 32619848f797STomáš Golembiovský content2 = g_strdup_printf("%s%s", group, content); 32629848f797STomáš Golembiovský 32639848f797STomáš Golembiovský if (!g_key_file_load_from_data(keys, content2, -1, G_KEY_FILE_NONE, 32649848f797STomáš Golembiovský &err)) { 32659848f797STomáš Golembiovský slog("failed to parse file '%s', error: %s", fname, err->message); 32669848f797STomáš Golembiovský goto fail; 32679848f797STomáš Golembiovský } 32689848f797STomáš Golembiovský 32699848f797STomáš Golembiovský g_free(content); 32709848f797STomáš Golembiovský g_free(content2); 32719848f797STomáš Golembiovský return keys; 32729848f797STomáš Golembiovský 32739848f797STomáš Golembiovský fail: 32749848f797STomáš Golembiovský g_error_free(err); 32759848f797STomáš Golembiovský g_free(content); 32769848f797STomáš Golembiovský g_free(content2); 32779848f797STomáš Golembiovský g_key_file_free(keys); 32789848f797STomáš Golembiovský return NULL; 32799848f797STomáš Golembiovský } 32809848f797STomáš Golembiovský 32819848f797STomáš Golembiovský GuestOSInfo *qmp_guest_get_osinfo(Error **errp) 32829848f797STomáš Golembiovský { 32839848f797STomáš Golembiovský GuestOSInfo *info = NULL; 32849848f797STomáš Golembiovský struct utsname kinfo; 3285339ca68bSTomáš Golembiovský GKeyFile *osrelease = NULL; 3286339ca68bSTomáš Golembiovský const char *qga_os_release = g_getenv("QGA_OS_RELEASE"); 32879848f797STomáš Golembiovský 32889848f797STomáš Golembiovský info = g_new0(GuestOSInfo, 1); 32899848f797STomáš Golembiovský 32909848f797STomáš Golembiovský if (uname(&kinfo) != 0) { 32919848f797STomáš Golembiovský error_setg_errno(errp, errno, "uname failed"); 32929848f797STomáš Golembiovský } else { 32939848f797STomáš Golembiovský info->has_kernel_version = true; 32949848f797STomáš Golembiovský info->kernel_version = g_strdup(kinfo.version); 32959848f797STomáš Golembiovský info->has_kernel_release = true; 32969848f797STomáš Golembiovský info->kernel_release = g_strdup(kinfo.release); 32979848f797STomáš Golembiovský info->has_machine = true; 32989848f797STomáš Golembiovský info->machine = g_strdup(kinfo.machine); 32999848f797STomáš Golembiovský } 33009848f797STomáš Golembiovský 3301339ca68bSTomáš Golembiovský if (qga_os_release != NULL) { 3302339ca68bSTomáš Golembiovský osrelease = ga_parse_osrelease(qga_os_release); 3303339ca68bSTomáš Golembiovský } else { 33049848f797STomáš Golembiovský osrelease = ga_parse_osrelease("/etc/os-release"); 33059848f797STomáš Golembiovský if (osrelease == NULL) { 33069848f797STomáš Golembiovský osrelease = ga_parse_osrelease("/usr/lib/os-release"); 33079848f797STomáš Golembiovský } 3308339ca68bSTomáš Golembiovský } 33099848f797STomáš Golembiovský 33109848f797STomáš Golembiovský if (osrelease != NULL) { 33119848f797STomáš Golembiovský char *value; 33129848f797STomáš Golembiovský 33139848f797STomáš Golembiovský #define GET_FIELD(field, osfield) do { \ 33149848f797STomáš Golembiovský value = g_key_file_get_value(osrelease, "os-release", osfield, NULL); \ 33159848f797STomáš Golembiovský if (value != NULL) { \ 33169848f797STomáš Golembiovský ga_osrelease_replace_special(value); \ 33179848f797STomáš Golembiovský info->has_ ## field = true; \ 33189848f797STomáš Golembiovský info->field = value; \ 33199848f797STomáš Golembiovský } \ 33209848f797STomáš Golembiovský } while (0) 33219848f797STomáš Golembiovský GET_FIELD(id, "ID"); 33229848f797STomáš Golembiovský GET_FIELD(name, "NAME"); 33239848f797STomáš Golembiovský GET_FIELD(pretty_name, "PRETTY_NAME"); 33249848f797STomáš Golembiovský GET_FIELD(version, "VERSION"); 33259848f797STomáš Golembiovský GET_FIELD(version_id, "VERSION_ID"); 33269848f797STomáš Golembiovský GET_FIELD(variant, "VARIANT"); 33279848f797STomáš Golembiovský GET_FIELD(variant_id, "VARIANT_ID"); 33289848f797STomáš Golembiovský #undef GET_FIELD 33299848f797STomáš Golembiovský 33309848f797STomáš Golembiovský g_key_file_free(osrelease); 33319848f797STomáš Golembiovský } 33329848f797STomáš Golembiovský 33339848f797STomáš Golembiovský return info; 33349848f797STomáš Golembiovský } 33352e4211ceSTomáš Golembiovský 33362e4211ceSTomáš Golembiovský GuestDeviceInfoList *qmp_guest_get_devices(Error **errp) 33372e4211ceSTomáš Golembiovský { 33382e4211ceSTomáš Golembiovský error_setg(errp, QERR_UNSUPPORTED); 33392e4211ceSTomáš Golembiovský 33402e4211ceSTomáš Golembiovský return NULL; 33412e4211ceSTomáš Golembiovský } 3342