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 999*23843c12SThomas Huth /* 1000*23843c12SThomas Huth * Store disk device info for non-PCI virtio devices (for example s390x 1001*23843c12SThomas Huth * channel I/O devices). Returns true if information has been stored, or 1002*23843c12SThomas Huth * false for failure. 1003*23843c12SThomas Huth */ 1004*23843c12SThomas Huth static bool build_guest_fsinfo_for_nonpci_virtio(char const *syspath, 1005*23843c12SThomas Huth GuestDiskAddress *disk, 1006*23843c12SThomas Huth Error **errp) 1007*23843c12SThomas Huth { 1008*23843c12SThomas Huth unsigned int tgt[3]; 1009*23843c12SThomas Huth char *p; 1010*23843c12SThomas Huth 1011*23843c12SThomas Huth if (!strstr(syspath, "/virtio") || !strstr(syspath, "/block")) { 1012*23843c12SThomas Huth g_debug("Unsupported virtio device '%s'", syspath); 1013*23843c12SThomas Huth return false; 1014*23843c12SThomas Huth } 1015*23843c12SThomas Huth 1016*23843c12SThomas Huth p = strstr(syspath, "/target"); 1017*23843c12SThomas Huth if (p && sscanf(p + 7, "%*u:%*u:%*u/%*u:%u:%u:%u", 1018*23843c12SThomas Huth &tgt[0], &tgt[1], &tgt[2]) == 3) { 1019*23843c12SThomas Huth /* virtio-scsi: target*:0:<target>:<unit> */ 1020*23843c12SThomas Huth disk->bus_type = GUEST_DISK_BUS_TYPE_SCSI; 1021*23843c12SThomas Huth disk->bus = tgt[0]; 1022*23843c12SThomas Huth disk->target = tgt[1]; 1023*23843c12SThomas Huth disk->unit = tgt[2]; 1024*23843c12SThomas Huth } else { 1025*23843c12SThomas Huth /* virtio-blk: 1 disk per 1 device */ 1026*23843c12SThomas Huth disk->bus_type = GUEST_DISK_BUS_TYPE_VIRTIO; 1027*23843c12SThomas Huth } 1028*23843c12SThomas Huth 1029*23843c12SThomas Huth return true; 1030*23843c12SThomas Huth } 1031*23843c12SThomas Huth 1032d9fe4f0fSThomas Huth /* Store disk device info specified by @sysfs into @fs */ 1033d9fe4f0fSThomas Huth static void build_guest_fsinfo_for_real_device(char const *syspath, 1034d9fe4f0fSThomas Huth GuestFilesystemInfo *fs, 1035d9fe4f0fSThomas Huth Error **errp) 1036d9fe4f0fSThomas Huth { 1037d9fe4f0fSThomas Huth GuestDiskAddress *disk; 1038d9fe4f0fSThomas Huth GuestPCIAddress *pciaddr; 1039d9fe4f0fSThomas Huth GuestDiskAddressList *list = NULL; 1040d9fe4f0fSThomas Huth bool has_hwinf; 104143dadc43SThomas Huth #ifdef CONFIG_LIBUDEV 104243dadc43SThomas Huth struct udev *udev = NULL; 104343dadc43SThomas Huth struct udev_device *udevice = NULL; 104443dadc43SThomas Huth #endif 1045d9fe4f0fSThomas Huth 1046d9fe4f0fSThomas Huth pciaddr = g_new0(GuestPCIAddress, 1); 104743dadc43SThomas Huth pciaddr->domain = -1; /* -1 means field is invalid */ 104843dadc43SThomas Huth pciaddr->bus = -1; 104943dadc43SThomas Huth pciaddr->slot = -1; 105043dadc43SThomas Huth pciaddr->function = -1; 1051d9fe4f0fSThomas Huth 1052d9fe4f0fSThomas Huth disk = g_new0(GuestDiskAddress, 1); 1053d9fe4f0fSThomas Huth disk->pci_controller = pciaddr; 105443dadc43SThomas Huth disk->bus_type = GUEST_DISK_BUS_TYPE_UNKNOWN; 1055d9fe4f0fSThomas Huth 1056d9fe4f0fSThomas Huth list = g_new0(GuestDiskAddressList, 1); 1057d9fe4f0fSThomas Huth list->value = disk; 1058d9fe4f0fSThomas Huth 105943dadc43SThomas Huth #ifdef CONFIG_LIBUDEV 106043dadc43SThomas Huth udev = udev_new(); 106143dadc43SThomas Huth udevice = udev_device_new_from_syspath(udev, syspath); 106243dadc43SThomas Huth if (udev == NULL || udevice == NULL) { 106343dadc43SThomas Huth g_debug("failed to query udev"); 106443dadc43SThomas Huth } else { 106543dadc43SThomas Huth const char *devnode, *serial; 106643dadc43SThomas Huth devnode = udev_device_get_devnode(udevice); 106743dadc43SThomas Huth if (devnode != NULL) { 106843dadc43SThomas Huth disk->dev = g_strdup(devnode); 106943dadc43SThomas Huth disk->has_dev = true; 107043dadc43SThomas Huth } 107143dadc43SThomas Huth serial = udev_device_get_property_value(udevice, "ID_SERIAL"); 107243dadc43SThomas Huth if (serial != NULL && *serial != 0) { 107343dadc43SThomas Huth disk->serial = g_strdup(serial); 107443dadc43SThomas Huth disk->has_serial = true; 107543dadc43SThomas Huth } 107643dadc43SThomas Huth } 107743dadc43SThomas Huth 107843dadc43SThomas Huth udev_unref(udev); 107943dadc43SThomas Huth udev_device_unref(udevice); 108043dadc43SThomas Huth #endif 108143dadc43SThomas Huth 1082*23843c12SThomas Huth if (strstr(syspath, "/devices/pci")) { 1083d9fe4f0fSThomas Huth has_hwinf = build_guest_fsinfo_for_pci_dev(syspath, disk, errp); 1084*23843c12SThomas Huth } else if (strstr(syspath, "/virtio")) { 1085*23843c12SThomas Huth has_hwinf = build_guest_fsinfo_for_nonpci_virtio(syspath, disk, errp); 1086*23843c12SThomas Huth } else { 1087*23843c12SThomas Huth g_debug("Unsupported device type for '%s'", syspath); 1088*23843c12SThomas Huth has_hwinf = false; 1089*23843c12SThomas Huth } 1090d9fe4f0fSThomas Huth 109143dadc43SThomas Huth if (has_hwinf || disk->has_dev || disk->has_serial) { 1092d9fe4f0fSThomas Huth list->next = fs->disk; 1093d9fe4f0fSThomas Huth fs->disk = list; 1094d9fe4f0fSThomas Huth } else { 1095d9fe4f0fSThomas Huth qapi_free_GuestDiskAddressList(list); 1096d9fe4f0fSThomas Huth } 109746d4c572STomoki Sekiyama } 109846d4c572STomoki Sekiyama 109946d4c572STomoki Sekiyama static void build_guest_fsinfo_for_device(char const *devpath, 110046d4c572STomoki Sekiyama GuestFilesystemInfo *fs, 110146d4c572STomoki Sekiyama Error **errp); 110246d4c572STomoki Sekiyama 110346d4c572STomoki Sekiyama /* Store a list of slave devices of virtual volume specified by @syspath into 110446d4c572STomoki Sekiyama * @fs */ 110546d4c572STomoki Sekiyama static void build_guest_fsinfo_for_virtual_device(char const *syspath, 110646d4c572STomoki Sekiyama GuestFilesystemInfo *fs, 110746d4c572STomoki Sekiyama Error **errp) 110846d4c572STomoki Sekiyama { 1109292743d9SMarkus Armbruster Error *err = NULL; 111046d4c572STomoki Sekiyama DIR *dir; 111146d4c572STomoki Sekiyama char *dirpath; 1112e668d1b8Szhanghailiang struct dirent *entry; 111346d4c572STomoki Sekiyama 111446d4c572STomoki Sekiyama dirpath = g_strdup_printf("%s/slaves", syspath); 111546d4c572STomoki Sekiyama dir = opendir(dirpath); 111646d4c572STomoki Sekiyama if (!dir) { 11178251a72fSMichael Roth if (errno != ENOENT) { 111846d4c572STomoki Sekiyama error_setg_errno(errp, errno, "opendir(\"%s\")", dirpath); 11198251a72fSMichael Roth } 112046d4c572STomoki Sekiyama g_free(dirpath); 112146d4c572STomoki Sekiyama return; 112246d4c572STomoki Sekiyama } 112346d4c572STomoki Sekiyama 112446d4c572STomoki Sekiyama for (;;) { 1125e668d1b8Szhanghailiang errno = 0; 1126e668d1b8Szhanghailiang entry = readdir(dir); 1127e668d1b8Szhanghailiang if (entry == NULL) { 1128e668d1b8Szhanghailiang if (errno) { 1129e668d1b8Szhanghailiang error_setg_errno(errp, errno, "readdir(\"%s\")", dirpath); 113046d4c572STomoki Sekiyama } 113146d4c572STomoki Sekiyama break; 113246d4c572STomoki Sekiyama } 113346d4c572STomoki Sekiyama 1134e668d1b8Szhanghailiang if (entry->d_type == DT_LNK) { 1135e668d1b8Szhanghailiang char *path; 1136e668d1b8Szhanghailiang 1137e668d1b8Szhanghailiang g_debug(" slave device '%s'", entry->d_name); 1138e668d1b8Szhanghailiang path = g_strdup_printf("%s/slaves/%s", syspath, entry->d_name); 1139292743d9SMarkus Armbruster build_guest_fsinfo_for_device(path, fs, &err); 1140e668d1b8Szhanghailiang g_free(path); 114146d4c572STomoki Sekiyama 1142292743d9SMarkus Armbruster if (err) { 1143292743d9SMarkus Armbruster error_propagate(errp, err); 114446d4c572STomoki Sekiyama break; 114546d4c572STomoki Sekiyama } 114646d4c572STomoki Sekiyama } 114746d4c572STomoki Sekiyama } 114846d4c572STomoki Sekiyama 1149e668d1b8Szhanghailiang g_free(dirpath); 115046d4c572STomoki Sekiyama closedir(dir); 115146d4c572STomoki Sekiyama } 115246d4c572STomoki Sekiyama 115346d4c572STomoki Sekiyama /* Dispatch to functions for virtual/real device */ 115446d4c572STomoki Sekiyama static void build_guest_fsinfo_for_device(char const *devpath, 115546d4c572STomoki Sekiyama GuestFilesystemInfo *fs, 115646d4c572STomoki Sekiyama Error **errp) 115746d4c572STomoki Sekiyama { 115846d4c572STomoki Sekiyama char *syspath = realpath(devpath, NULL); 115946d4c572STomoki Sekiyama 116046d4c572STomoki Sekiyama if (!syspath) { 116146d4c572STomoki Sekiyama error_setg_errno(errp, errno, "realpath(\"%s\")", devpath); 116246d4c572STomoki Sekiyama return; 116346d4c572STomoki Sekiyama } 116446d4c572STomoki Sekiyama 116546d4c572STomoki Sekiyama if (!fs->name) { 11663e015d81SJulia Suvorova fs->name = g_path_get_basename(syspath); 116746d4c572STomoki Sekiyama } 116846d4c572STomoki Sekiyama 116946d4c572STomoki Sekiyama g_debug(" parse sysfs path '%s'", syspath); 117046d4c572STomoki Sekiyama 117146d4c572STomoki Sekiyama if (strstr(syspath, "/devices/virtual/block/")) { 117246d4c572STomoki Sekiyama build_guest_fsinfo_for_virtual_device(syspath, fs, errp); 117346d4c572STomoki Sekiyama } else { 117446d4c572STomoki Sekiyama build_guest_fsinfo_for_real_device(syspath, fs, errp); 117546d4c572STomoki Sekiyama } 117646d4c572STomoki Sekiyama 117746d4c572STomoki Sekiyama free(syspath); 117846d4c572STomoki Sekiyama } 117946d4c572STomoki Sekiyama 118046d4c572STomoki Sekiyama /* Return a list of the disk device(s)' info which @mount lies on */ 118146d4c572STomoki Sekiyama static GuestFilesystemInfo *build_guest_fsinfo(struct FsMount *mount, 118246d4c572STomoki Sekiyama Error **errp) 118346d4c572STomoki Sekiyama { 118446d4c572STomoki Sekiyama GuestFilesystemInfo *fs = g_malloc0(sizeof(*fs)); 118525b5ff1aSChen Hanxiao struct statvfs buf; 118625b5ff1aSChen Hanxiao unsigned long used, nonroot_total, fr_size; 118746d4c572STomoki Sekiyama char *devpath = g_strdup_printf("/sys/dev/block/%u:%u", 118846d4c572STomoki Sekiyama mount->devmajor, mount->devminor); 118946d4c572STomoki Sekiyama 119046d4c572STomoki Sekiyama fs->mountpoint = g_strdup(mount->dirname); 119146d4c572STomoki Sekiyama fs->type = g_strdup(mount->devtype); 119246d4c572STomoki Sekiyama build_guest_fsinfo_for_device(devpath, fs, errp); 119346d4c572STomoki Sekiyama 119425b5ff1aSChen Hanxiao if (statvfs(fs->mountpoint, &buf) == 0) { 119525b5ff1aSChen Hanxiao fr_size = buf.f_frsize; 119625b5ff1aSChen Hanxiao used = buf.f_blocks - buf.f_bfree; 119725b5ff1aSChen Hanxiao nonroot_total = used + buf.f_bavail; 119825b5ff1aSChen Hanxiao fs->used_bytes = used * fr_size; 119925b5ff1aSChen Hanxiao fs->total_bytes = nonroot_total * fr_size; 120025b5ff1aSChen Hanxiao 120125b5ff1aSChen Hanxiao fs->has_total_bytes = true; 120225b5ff1aSChen Hanxiao fs->has_used_bytes = true; 120325b5ff1aSChen Hanxiao } 120425b5ff1aSChen Hanxiao 120546d4c572STomoki Sekiyama g_free(devpath); 120625b5ff1aSChen Hanxiao 120746d4c572STomoki Sekiyama return fs; 120846d4c572STomoki Sekiyama } 120946d4c572STomoki Sekiyama 121046d4c572STomoki Sekiyama GuestFilesystemInfoList *qmp_guest_get_fsinfo(Error **errp) 121146d4c572STomoki Sekiyama { 121246d4c572STomoki Sekiyama FsMountList mounts; 121346d4c572STomoki Sekiyama struct FsMount *mount; 121446d4c572STomoki Sekiyama GuestFilesystemInfoList *new, *ret = NULL; 121546d4c572STomoki Sekiyama Error *local_err = NULL; 121646d4c572STomoki Sekiyama 121746d4c572STomoki Sekiyama QTAILQ_INIT(&mounts); 121846d4c572STomoki Sekiyama build_fs_mount_list(&mounts, &local_err); 121946d4c572STomoki Sekiyama if (local_err) { 122046d4c572STomoki Sekiyama error_propagate(errp, local_err); 122146d4c572STomoki Sekiyama return NULL; 122246d4c572STomoki Sekiyama } 122346d4c572STomoki Sekiyama 122446d4c572STomoki Sekiyama QTAILQ_FOREACH(mount, &mounts, next) { 122546d4c572STomoki Sekiyama g_debug("Building guest fsinfo for '%s'", mount->dirname); 122646d4c572STomoki Sekiyama 122746d4c572STomoki Sekiyama new = g_malloc0(sizeof(*ret)); 122846d4c572STomoki Sekiyama new->value = build_guest_fsinfo(mount, &local_err); 122946d4c572STomoki Sekiyama new->next = ret; 123046d4c572STomoki Sekiyama ret = new; 123146d4c572STomoki Sekiyama if (local_err) { 123246d4c572STomoki Sekiyama error_propagate(errp, local_err); 123346d4c572STomoki Sekiyama qapi_free_GuestFilesystemInfoList(ret); 123446d4c572STomoki Sekiyama ret = NULL; 123546d4c572STomoki Sekiyama break; 123646d4c572STomoki Sekiyama } 123746d4c572STomoki Sekiyama } 123846d4c572STomoki Sekiyama 123946d4c572STomoki Sekiyama free_fs_mount_list(&mounts); 124046d4c572STomoki Sekiyama return ret; 124146d4c572STomoki Sekiyama } 124246d4c572STomoki Sekiyama 124346d4c572STomoki Sekiyama 1244ec0f694cSTomoki Sekiyama typedef enum { 1245ec0f694cSTomoki Sekiyama FSFREEZE_HOOK_THAW = 0, 1246ec0f694cSTomoki Sekiyama FSFREEZE_HOOK_FREEZE, 1247ec0f694cSTomoki Sekiyama } FsfreezeHookArg; 1248ec0f694cSTomoki Sekiyama 124913a439ecSStefan Weil static const char *fsfreeze_hook_arg_string[] = { 1250ec0f694cSTomoki Sekiyama "thaw", 1251ec0f694cSTomoki Sekiyama "freeze", 1252ec0f694cSTomoki Sekiyama }; 1253ec0f694cSTomoki Sekiyama 125477dbc81bSMarkus Armbruster static void execute_fsfreeze_hook(FsfreezeHookArg arg, Error **errp) 1255ec0f694cSTomoki Sekiyama { 1256ec0f694cSTomoki Sekiyama int status; 1257ec0f694cSTomoki Sekiyama pid_t pid; 1258ec0f694cSTomoki Sekiyama const char *hook; 1259ec0f694cSTomoki Sekiyama const char *arg_str = fsfreeze_hook_arg_string[arg]; 1260ec0f694cSTomoki Sekiyama Error *local_err = NULL; 1261ec0f694cSTomoki Sekiyama 1262ec0f694cSTomoki Sekiyama hook = ga_fsfreeze_hook(ga_state); 1263ec0f694cSTomoki Sekiyama if (!hook) { 1264ec0f694cSTomoki Sekiyama return; 1265ec0f694cSTomoki Sekiyama } 1266ec0f694cSTomoki Sekiyama if (access(hook, X_OK) != 0) { 126777dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "can't access fsfreeze hook '%s'", hook); 1268ec0f694cSTomoki Sekiyama return; 1269ec0f694cSTomoki Sekiyama } 1270ec0f694cSTomoki Sekiyama 1271ec0f694cSTomoki Sekiyama slog("executing fsfreeze hook with arg '%s'", arg_str); 1272ec0f694cSTomoki Sekiyama pid = fork(); 1273ec0f694cSTomoki Sekiyama if (pid == 0) { 1274ec0f694cSTomoki Sekiyama setsid(); 1275ec0f694cSTomoki Sekiyama reopen_fd_to_null(0); 1276ec0f694cSTomoki Sekiyama reopen_fd_to_null(1); 1277ec0f694cSTomoki Sekiyama reopen_fd_to_null(2); 1278ec0f694cSTomoki Sekiyama 1279ec0f694cSTomoki Sekiyama execle(hook, hook, arg_str, NULL, environ); 1280ec0f694cSTomoki Sekiyama _exit(EXIT_FAILURE); 1281ec0f694cSTomoki Sekiyama } else if (pid < 0) { 128277dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to create child process"); 1283ec0f694cSTomoki Sekiyama return; 1284ec0f694cSTomoki Sekiyama } 1285ec0f694cSTomoki Sekiyama 1286ec0f694cSTomoki Sekiyama ga_wait_child(pid, &status, &local_err); 128784d18f06SMarkus Armbruster if (local_err) { 128877dbc81bSMarkus Armbruster error_propagate(errp, local_err); 1289ec0f694cSTomoki Sekiyama return; 1290ec0f694cSTomoki Sekiyama } 1291ec0f694cSTomoki Sekiyama 1292ec0f694cSTomoki Sekiyama if (!WIFEXITED(status)) { 129377dbc81bSMarkus Armbruster error_setg(errp, "fsfreeze hook has terminated abnormally"); 1294ec0f694cSTomoki Sekiyama return; 1295ec0f694cSTomoki Sekiyama } 1296ec0f694cSTomoki Sekiyama 1297ec0f694cSTomoki Sekiyama status = WEXITSTATUS(status); 1298ec0f694cSTomoki Sekiyama if (status) { 129977dbc81bSMarkus Armbruster error_setg(errp, "fsfreeze hook has failed with status %d", status); 1300ec0f694cSTomoki Sekiyama return; 1301ec0f694cSTomoki Sekiyama } 1302ec0f694cSTomoki Sekiyama } 1303ec0f694cSTomoki Sekiyama 1304c216e5adSMichael Roth /* 1305c216e5adSMichael Roth * Return status of freeze/thaw 1306c216e5adSMichael Roth */ 130777dbc81bSMarkus Armbruster GuestFsfreezeStatus qmp_guest_fsfreeze_status(Error **errp) 1308c216e5adSMichael Roth { 1309f22d85e9SMichael Roth if (ga_is_frozen(ga_state)) { 1310f22d85e9SMichael Roth return GUEST_FSFREEZE_STATUS_FROZEN; 1311f22d85e9SMichael Roth } 1312f22d85e9SMichael Roth 1313f22d85e9SMichael Roth return GUEST_FSFREEZE_STATUS_THAWED; 1314c216e5adSMichael Roth } 1315c216e5adSMichael Roth 1316e99bce20STomoki Sekiyama int64_t qmp_guest_fsfreeze_freeze(Error **errp) 1317e99bce20STomoki Sekiyama { 1318e99bce20STomoki Sekiyama return qmp_guest_fsfreeze_freeze_list(false, NULL, errp); 1319e99bce20STomoki Sekiyama } 1320e99bce20STomoki Sekiyama 1321c216e5adSMichael Roth /* 1322c216e5adSMichael Roth * Walk list of mounted file systems in the guest, and freeze the ones which 1323c216e5adSMichael Roth * are real local file systems. 1324c216e5adSMichael Roth */ 1325e99bce20STomoki Sekiyama int64_t qmp_guest_fsfreeze_freeze_list(bool has_mountpoints, 1326e99bce20STomoki Sekiyama strList *mountpoints, 1327e99bce20STomoki Sekiyama Error **errp) 1328c216e5adSMichael Roth { 1329c216e5adSMichael Roth int ret = 0, i = 0; 1330e99bce20STomoki Sekiyama strList *list; 1331af02203fSPaolo Bonzini FsMountList mounts; 1332af02203fSPaolo Bonzini struct FsMount *mount; 1333261551d1SLuiz Capitulino Error *local_err = NULL; 1334c216e5adSMichael Roth int fd; 1335c216e5adSMichael Roth 1336c216e5adSMichael Roth slog("guest-fsfreeze called"); 1337c216e5adSMichael Roth 1338ec0f694cSTomoki Sekiyama execute_fsfreeze_hook(FSFREEZE_HOOK_FREEZE, &local_err); 133984d18f06SMarkus Armbruster if (local_err) { 134077dbc81bSMarkus Armbruster error_propagate(errp, local_err); 1341ec0f694cSTomoki Sekiyama return -1; 1342ec0f694cSTomoki Sekiyama } 1343ec0f694cSTomoki Sekiyama 13449e8aded4SMichael Roth QTAILQ_INIT(&mounts); 1345261551d1SLuiz Capitulino build_fs_mount_list(&mounts, &local_err); 134684d18f06SMarkus Armbruster if (local_err) { 134777dbc81bSMarkus Armbruster error_propagate(errp, local_err); 1348261551d1SLuiz Capitulino return -1; 1349c216e5adSMichael Roth } 1350c216e5adSMichael Roth 1351c216e5adSMichael Roth /* cannot risk guest agent blocking itself on a write in this state */ 1352f22d85e9SMichael Roth ga_set_frozen(ga_state); 1353c216e5adSMichael Roth 1354eae3eb3eSPaolo Bonzini QTAILQ_FOREACH_REVERSE(mount, &mounts, next) { 1355e99bce20STomoki Sekiyama /* To issue fsfreeze in the reverse order of mounts, check if the 1356e99bce20STomoki Sekiyama * mount is listed in the list here */ 1357e99bce20STomoki Sekiyama if (has_mountpoints) { 1358e99bce20STomoki Sekiyama for (list = mountpoints; list; list = list->next) { 1359e99bce20STomoki Sekiyama if (strcmp(list->value, mount->dirname) == 0) { 1360e99bce20STomoki Sekiyama break; 1361e99bce20STomoki Sekiyama } 1362e99bce20STomoki Sekiyama } 1363e99bce20STomoki Sekiyama if (!list) { 1364e99bce20STomoki Sekiyama continue; 1365e99bce20STomoki Sekiyama } 1366e99bce20STomoki Sekiyama } 1367e99bce20STomoki Sekiyama 1368c216e5adSMichael Roth fd = qemu_open(mount->dirname, O_RDONLY); 1369c216e5adSMichael Roth if (fd == -1) { 137077dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to open %s", mount->dirname); 1371c216e5adSMichael Roth goto error; 1372c216e5adSMichael Roth } 1373c216e5adSMichael Roth 1374e35916acSMichael Tokarev /* we try to cull filesystems we know won't work in advance, but other 1375e35916acSMichael Tokarev * filesystems may not implement fsfreeze for less obvious reasons. 13769e8aded4SMichael Roth * these will report EOPNOTSUPP. we simply ignore these when tallying 13779e8aded4SMichael Roth * the number of frozen filesystems. 1378ce2eb6c4SPeter Lieven * if a filesystem is mounted more than once (aka bind mount) a 1379ce2eb6c4SPeter Lieven * consecutive attempt to freeze an already frozen filesystem will 1380ce2eb6c4SPeter Lieven * return EBUSY. 13819e8aded4SMichael Roth * 13829e8aded4SMichael Roth * any other error means a failure to freeze a filesystem we 13839e8aded4SMichael Roth * expect to be freezable, so return an error in those cases 13849e8aded4SMichael Roth * and return system to thawed state. 1385c216e5adSMichael Roth */ 1386c216e5adSMichael Roth ret = ioctl(fd, FIFREEZE); 13879e8aded4SMichael Roth if (ret == -1) { 1388ce2eb6c4SPeter Lieven if (errno != EOPNOTSUPP && errno != EBUSY) { 138977dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to freeze %s", 1390617fbbc1SLuiz Capitulino mount->dirname); 1391c216e5adSMichael Roth close(fd); 1392c216e5adSMichael Roth goto error; 1393c216e5adSMichael Roth } 13949e8aded4SMichael Roth } else { 1395c216e5adSMichael Roth i++; 1396c216e5adSMichael Roth } 13979e8aded4SMichael Roth close(fd); 13989e8aded4SMichael Roth } 1399c216e5adSMichael Roth 1400af02203fSPaolo Bonzini free_fs_mount_list(&mounts); 140165650f01SChen Hanxiao /* We may not issue any FIFREEZE here. 140265650f01SChen Hanxiao * Just unset ga_state here and ready for the next call. 140365650f01SChen Hanxiao */ 140465650f01SChen Hanxiao if (i == 0) { 140565650f01SChen Hanxiao ga_unset_frozen(ga_state); 140665650f01SChen Hanxiao } 1407c216e5adSMichael Roth return i; 1408c216e5adSMichael Roth 1409c216e5adSMichael Roth error: 1410af02203fSPaolo Bonzini free_fs_mount_list(&mounts); 1411c216e5adSMichael Roth qmp_guest_fsfreeze_thaw(NULL); 1412c216e5adSMichael Roth return 0; 1413c216e5adSMichael Roth } 1414c216e5adSMichael Roth 1415c216e5adSMichael Roth /* 1416c216e5adSMichael Roth * Walk list of frozen file systems in the guest, and thaw them. 1417c216e5adSMichael Roth */ 141877dbc81bSMarkus Armbruster int64_t qmp_guest_fsfreeze_thaw(Error **errp) 1419c216e5adSMichael Roth { 1420c216e5adSMichael Roth int ret; 1421af02203fSPaolo Bonzini FsMountList mounts; 1422af02203fSPaolo Bonzini FsMount *mount; 14239e8aded4SMichael Roth int fd, i = 0, logged; 1424261551d1SLuiz Capitulino Error *local_err = NULL; 1425c216e5adSMichael Roth 14269e8aded4SMichael Roth QTAILQ_INIT(&mounts); 1427261551d1SLuiz Capitulino build_fs_mount_list(&mounts, &local_err); 142884d18f06SMarkus Armbruster if (local_err) { 142977dbc81bSMarkus Armbruster error_propagate(errp, local_err); 14309e8aded4SMichael Roth return 0; 14319e8aded4SMichael Roth } 14329e8aded4SMichael Roth 14339e8aded4SMichael Roth QTAILQ_FOREACH(mount, &mounts, next) { 14349e8aded4SMichael Roth logged = false; 1435c216e5adSMichael Roth fd = qemu_open(mount->dirname, O_RDONLY); 1436c216e5adSMichael Roth if (fd == -1) { 1437c216e5adSMichael Roth continue; 1438c216e5adSMichael Roth } 14399e8aded4SMichael Roth /* we have no way of knowing whether a filesystem was actually unfrozen 14409e8aded4SMichael Roth * as a result of a successful call to FITHAW, only that if an error 14419e8aded4SMichael Roth * was returned the filesystem was *not* unfrozen by that particular 14429e8aded4SMichael Roth * call. 14439e8aded4SMichael Roth * 1444a31f0531SJim Meyering * since multiple preceding FIFREEZEs require multiple calls to FITHAW 14459e8aded4SMichael Roth * to unfreeze, continuing issuing FITHAW until an error is returned, 14469e8aded4SMichael Roth * in which case either the filesystem is in an unfreezable state, or, 14479e8aded4SMichael Roth * more likely, it was thawed previously (and remains so afterward). 14489e8aded4SMichael Roth * 14499e8aded4SMichael Roth * also, since the most recent successful call is the one that did 14509e8aded4SMichael Roth * the actual unfreeze, we can use this to provide an accurate count 14519e8aded4SMichael Roth * of the number of filesystems unfrozen by guest-fsfreeze-thaw, which 14529e8aded4SMichael Roth * may * be useful for determining whether a filesystem was unfrozen 14539e8aded4SMichael Roth * during the freeze/thaw phase by a process other than qemu-ga. 14549e8aded4SMichael Roth */ 14559e8aded4SMichael Roth do { 1456c216e5adSMichael Roth ret = ioctl(fd, FITHAW); 14579e8aded4SMichael Roth if (ret == 0 && !logged) { 1458c216e5adSMichael Roth i++; 14599e8aded4SMichael Roth logged = true; 14609e8aded4SMichael Roth } 14619e8aded4SMichael Roth } while (ret == 0); 14629e8aded4SMichael Roth close(fd); 1463c216e5adSMichael Roth } 1464c216e5adSMichael Roth 1465f22d85e9SMichael Roth ga_unset_frozen(ga_state); 1466af02203fSPaolo Bonzini free_fs_mount_list(&mounts); 1467ec0f694cSTomoki Sekiyama 146877dbc81bSMarkus Armbruster execute_fsfreeze_hook(FSFREEZE_HOOK_THAW, errp); 1469ec0f694cSTomoki Sekiyama 1470c216e5adSMichael Roth return i; 1471c216e5adSMichael Roth } 1472c216e5adSMichael Roth 1473c216e5adSMichael Roth static void guest_fsfreeze_cleanup(void) 1474c216e5adSMichael Roth { 1475c216e5adSMichael Roth Error *err = NULL; 1476c216e5adSMichael Roth 1477f22d85e9SMichael Roth if (ga_is_frozen(ga_state) == GUEST_FSFREEZE_STATUS_FROZEN) { 14786f686749SMarkus Armbruster qmp_guest_fsfreeze_thaw(&err); 14796f686749SMarkus Armbruster if (err) { 14806f686749SMarkus Armbruster slog("failed to clean up frozen filesystems: %s", 14816f686749SMarkus Armbruster error_get_pretty(err)); 14826f686749SMarkus Armbruster error_free(err); 1483c216e5adSMichael Roth } 1484c216e5adSMichael Roth } 1485c216e5adSMichael Roth } 1486e72c3f2eSMichael Roth #endif /* CONFIG_FSFREEZE */ 1487c216e5adSMichael Roth 1488eab5fd59SPaolo Bonzini #if defined(CONFIG_FSTRIM) 1489eab5fd59SPaolo Bonzini /* 1490eab5fd59SPaolo Bonzini * Walk list of mounted file systems in the guest, and trim them. 1491eab5fd59SPaolo Bonzini */ 1492e82855d9SJustin Ossevoort GuestFilesystemTrimResponse * 1493e82855d9SJustin Ossevoort qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **errp) 1494eab5fd59SPaolo Bonzini { 1495e82855d9SJustin Ossevoort GuestFilesystemTrimResponse *response; 1496e82855d9SJustin Ossevoort GuestFilesystemTrimResultList *list; 1497e82855d9SJustin Ossevoort GuestFilesystemTrimResult *result; 1498eab5fd59SPaolo Bonzini int ret = 0; 1499eab5fd59SPaolo Bonzini FsMountList mounts; 1500eab5fd59SPaolo Bonzini struct FsMount *mount; 1501eab5fd59SPaolo Bonzini int fd; 1502261551d1SLuiz Capitulino Error *local_err = NULL; 150373a652a1SJustin Ossevoort struct fstrim_range r; 1504eab5fd59SPaolo Bonzini 1505eab5fd59SPaolo Bonzini slog("guest-fstrim called"); 1506eab5fd59SPaolo Bonzini 1507eab5fd59SPaolo Bonzini QTAILQ_INIT(&mounts); 1508261551d1SLuiz Capitulino build_fs_mount_list(&mounts, &local_err); 150984d18f06SMarkus Armbruster if (local_err) { 151077dbc81bSMarkus Armbruster error_propagate(errp, local_err); 1511e82855d9SJustin Ossevoort return NULL; 1512eab5fd59SPaolo Bonzini } 1513eab5fd59SPaolo Bonzini 1514e82855d9SJustin Ossevoort response = g_malloc0(sizeof(*response)); 1515e82855d9SJustin Ossevoort 1516eab5fd59SPaolo Bonzini QTAILQ_FOREACH(mount, &mounts, next) { 1517e82855d9SJustin Ossevoort result = g_malloc0(sizeof(*result)); 1518e82855d9SJustin Ossevoort result->path = g_strdup(mount->dirname); 1519e82855d9SJustin Ossevoort 1520e82855d9SJustin Ossevoort list = g_malloc0(sizeof(*list)); 1521e82855d9SJustin Ossevoort list->value = result; 1522e82855d9SJustin Ossevoort list->next = response->paths; 1523e82855d9SJustin Ossevoort response->paths = list; 1524e82855d9SJustin Ossevoort 1525eab5fd59SPaolo Bonzini fd = qemu_open(mount->dirname, O_RDONLY); 1526eab5fd59SPaolo Bonzini if (fd == -1) { 1527e82855d9SJustin Ossevoort result->error = g_strdup_printf("failed to open: %s", 1528e82855d9SJustin Ossevoort strerror(errno)); 1529e82855d9SJustin Ossevoort result->has_error = true; 1530e82855d9SJustin Ossevoort continue; 1531eab5fd59SPaolo Bonzini } 1532eab5fd59SPaolo Bonzini 1533e35916acSMichael Tokarev /* We try to cull filesystems we know won't work in advance, but other 1534e35916acSMichael Tokarev * filesystems may not implement fstrim for less obvious reasons. 1535e35916acSMichael Tokarev * These will report EOPNOTSUPP; while in some other cases ENOTTY 1536e35916acSMichael Tokarev * will be reported (e.g. CD-ROMs). 1537e82855d9SJustin Ossevoort * Any other error means an unexpected error. 1538eab5fd59SPaolo Bonzini */ 153973a652a1SJustin Ossevoort r.start = 0; 154073a652a1SJustin Ossevoort r.len = -1; 154173a652a1SJustin Ossevoort r.minlen = has_minimum ? minimum : 0; 1542eab5fd59SPaolo Bonzini ret = ioctl(fd, FITRIM, &r); 1543eab5fd59SPaolo Bonzini if (ret == -1) { 1544e82855d9SJustin Ossevoort result->has_error = true; 1545e82855d9SJustin Ossevoort if (errno == ENOTTY || errno == EOPNOTSUPP) { 1546e82855d9SJustin Ossevoort result->error = g_strdup("trim not supported"); 1547e82855d9SJustin Ossevoort } else { 1548e82855d9SJustin Ossevoort result->error = g_strdup_printf("failed to trim: %s", 1549e82855d9SJustin Ossevoort strerror(errno)); 1550e82855d9SJustin Ossevoort } 1551eab5fd59SPaolo Bonzini close(fd); 1552e82855d9SJustin Ossevoort continue; 1553eab5fd59SPaolo Bonzini } 1554e82855d9SJustin Ossevoort 1555e82855d9SJustin Ossevoort result->has_minimum = true; 1556e82855d9SJustin Ossevoort result->minimum = r.minlen; 1557e82855d9SJustin Ossevoort result->has_trimmed = true; 1558e82855d9SJustin Ossevoort result->trimmed = r.len; 1559eab5fd59SPaolo Bonzini close(fd); 1560eab5fd59SPaolo Bonzini } 1561eab5fd59SPaolo Bonzini 1562eab5fd59SPaolo Bonzini free_fs_mount_list(&mounts); 1563e82855d9SJustin Ossevoort return response; 1564eab5fd59SPaolo Bonzini } 1565eab5fd59SPaolo Bonzini #endif /* CONFIG_FSTRIM */ 1566eab5fd59SPaolo Bonzini 1567eab5fd59SPaolo Bonzini 156811d0f125SLuiz Capitulino #define LINUX_SYS_STATE_FILE "/sys/power/state" 156911d0f125SLuiz Capitulino #define SUSPEND_SUPPORTED 0 157011d0f125SLuiz Capitulino #define SUSPEND_NOT_SUPPORTED 1 157111d0f125SLuiz Capitulino 15728b020b5eSDaniel Henrique Barboza typedef enum { 15738b020b5eSDaniel Henrique Barboza SUSPEND_MODE_DISK = 0, 15748b020b5eSDaniel Henrique Barboza SUSPEND_MODE_RAM = 1, 15758b020b5eSDaniel Henrique Barboza SUSPEND_MODE_HYBRID = 2, 15768b020b5eSDaniel Henrique Barboza } SuspendMode; 15778b020b5eSDaniel Henrique Barboza 15788b020b5eSDaniel Henrique Barboza /* 15798b020b5eSDaniel Henrique Barboza * Executes a command in a child process using g_spawn_sync, 15808b020b5eSDaniel Henrique Barboza * returning an int >= 0 representing the exit status of the 15818b020b5eSDaniel Henrique Barboza * process. 15828b020b5eSDaniel Henrique Barboza * 15838b020b5eSDaniel Henrique Barboza * If the program wasn't found in path, returns -1. 15848b020b5eSDaniel Henrique Barboza * 15858b020b5eSDaniel Henrique Barboza * If a problem happened when creating the child process, 15868b020b5eSDaniel Henrique Barboza * returns -1 and errp is set. 15878b020b5eSDaniel Henrique Barboza */ 15888b020b5eSDaniel Henrique Barboza static int run_process_child(const char *command[], Error **errp) 15898b020b5eSDaniel Henrique Barboza { 15908b020b5eSDaniel Henrique Barboza int exit_status, spawn_flag; 15918b020b5eSDaniel Henrique Barboza GError *g_err = NULL; 15928b020b5eSDaniel Henrique Barboza bool success; 15938b020b5eSDaniel Henrique Barboza 15948b020b5eSDaniel Henrique Barboza spawn_flag = G_SPAWN_SEARCH_PATH | G_SPAWN_STDOUT_TO_DEV_NULL | 15958b020b5eSDaniel Henrique Barboza G_SPAWN_STDERR_TO_DEV_NULL; 15968b020b5eSDaniel Henrique Barboza 15978b020b5eSDaniel Henrique Barboza success = g_spawn_sync(NULL, (char **)command, environ, spawn_flag, 15988b020b5eSDaniel Henrique Barboza NULL, NULL, NULL, NULL, 15998b020b5eSDaniel Henrique Barboza &exit_status, &g_err); 16008b020b5eSDaniel Henrique Barboza 16018b020b5eSDaniel Henrique Barboza if (success) { 16028b020b5eSDaniel Henrique Barboza return WEXITSTATUS(exit_status); 16038b020b5eSDaniel Henrique Barboza } 16048b020b5eSDaniel Henrique Barboza 16058b020b5eSDaniel Henrique Barboza if (g_err && (g_err->code != G_SPAWN_ERROR_NOENT)) { 16068b020b5eSDaniel Henrique Barboza error_setg(errp, "failed to create child process, error '%s'", 16078b020b5eSDaniel Henrique Barboza g_err->message); 16088b020b5eSDaniel Henrique Barboza } 16098b020b5eSDaniel Henrique Barboza 16108b020b5eSDaniel Henrique Barboza g_error_free(g_err); 16118b020b5eSDaniel Henrique Barboza return -1; 16128b020b5eSDaniel Henrique Barboza } 16138b020b5eSDaniel Henrique Barboza 1614067927d6SDaniel Henrique Barboza static bool systemd_supports_mode(SuspendMode mode, Error **errp) 1615067927d6SDaniel Henrique Barboza { 1616067927d6SDaniel Henrique Barboza const char *systemctl_args[3] = {"systemd-hibernate", "systemd-suspend", 1617067927d6SDaniel Henrique Barboza "systemd-hybrid-sleep"}; 1618067927d6SDaniel Henrique Barboza const char *cmd[4] = {"systemctl", "status", systemctl_args[mode], NULL}; 1619067927d6SDaniel Henrique Barboza int status; 1620067927d6SDaniel Henrique Barboza 1621992861fbSMarkus Armbruster status = run_process_child(cmd, errp); 1622067927d6SDaniel Henrique Barboza 1623067927d6SDaniel Henrique Barboza /* 1624067927d6SDaniel Henrique Barboza * systemctl status uses LSB return codes so we can expect 1625067927d6SDaniel Henrique Barboza * status > 0 and be ok. To assert if the guest has support 1626067927d6SDaniel Henrique Barboza * for the selected suspend mode, status should be < 4. 4 is 1627067927d6SDaniel Henrique Barboza * the code for unknown service status, the return value when 1628067927d6SDaniel Henrique Barboza * the service does not exist. A common value is status = 3 1629067927d6SDaniel Henrique Barboza * (program is not running). 1630067927d6SDaniel Henrique Barboza */ 1631067927d6SDaniel Henrique Barboza if (status > 0 && status < 4) { 1632067927d6SDaniel Henrique Barboza return true; 1633067927d6SDaniel Henrique Barboza } 1634067927d6SDaniel Henrique Barboza 1635067927d6SDaniel Henrique Barboza return false; 1636067927d6SDaniel Henrique Barboza } 1637067927d6SDaniel Henrique Barboza 1638067927d6SDaniel Henrique Barboza static void systemd_suspend(SuspendMode mode, Error **errp) 1639067927d6SDaniel Henrique Barboza { 1640067927d6SDaniel Henrique Barboza Error *local_err = NULL; 1641067927d6SDaniel Henrique Barboza const char *systemctl_args[3] = {"hibernate", "suspend", "hybrid-sleep"}; 1642067927d6SDaniel Henrique Barboza const char *cmd[3] = {"systemctl", systemctl_args[mode], NULL}; 1643067927d6SDaniel Henrique Barboza int status; 1644067927d6SDaniel Henrique Barboza 1645067927d6SDaniel Henrique Barboza status = run_process_child(cmd, &local_err); 1646067927d6SDaniel Henrique Barboza 1647067927d6SDaniel Henrique Barboza if (status == 0) { 1648067927d6SDaniel Henrique Barboza return; 1649067927d6SDaniel Henrique Barboza } 1650067927d6SDaniel Henrique Barboza 1651067927d6SDaniel Henrique Barboza if ((status == -1) && !local_err) { 1652067927d6SDaniel Henrique Barboza error_setg(errp, "the helper program 'systemctl %s' was not found", 1653067927d6SDaniel Henrique Barboza systemctl_args[mode]); 1654067927d6SDaniel Henrique Barboza return; 1655067927d6SDaniel Henrique Barboza } 1656067927d6SDaniel Henrique Barboza 1657067927d6SDaniel Henrique Barboza if (local_err) { 1658067927d6SDaniel Henrique Barboza error_propagate(errp, local_err); 1659067927d6SDaniel Henrique Barboza } else { 1660067927d6SDaniel Henrique Barboza error_setg(errp, "the helper program 'systemctl %s' returned an " 1661067927d6SDaniel Henrique Barboza "unexpected exit status code (%d)", 1662067927d6SDaniel Henrique Barboza systemctl_args[mode], status); 1663067927d6SDaniel Henrique Barboza } 1664067927d6SDaniel Henrique Barboza } 1665067927d6SDaniel Henrique Barboza 16668b020b5eSDaniel Henrique Barboza static bool pmutils_supports_mode(SuspendMode mode, Error **errp) 166711d0f125SLuiz Capitulino { 16686b26e837SLuiz Capitulino Error *local_err = NULL; 16698b020b5eSDaniel Henrique Barboza const char *pmutils_args[3] = {"--hibernate", "--suspend", 16708b020b5eSDaniel Henrique Barboza "--suspend-hybrid"}; 16718b020b5eSDaniel Henrique Barboza const char *cmd[3] = {"pm-is-supported", pmutils_args[mode], NULL}; 1672dc8764f0SLuiz Capitulino int status; 167311d0f125SLuiz Capitulino 16748b020b5eSDaniel Henrique Barboza status = run_process_child(cmd, &local_err); 1675304a0fcbSDaniel Henrique Barboza 16768b020b5eSDaniel Henrique Barboza if (status == SUSPEND_SUPPORTED) { 16778b020b5eSDaniel Henrique Barboza return true; 1678304a0fcbSDaniel Henrique Barboza } 1679304a0fcbSDaniel Henrique Barboza 16808b020b5eSDaniel Henrique Barboza if ((status == -1) && !local_err) { 16818b020b5eSDaniel Henrique Barboza return false; 1682a5fcf0e3SDaniel Henrique Barboza } 168311d0f125SLuiz Capitulino 168484d18f06SMarkus Armbruster if (local_err) { 168577dbc81bSMarkus Armbruster error_propagate(errp, local_err); 16868b020b5eSDaniel Henrique Barboza } else { 168777dbc81bSMarkus Armbruster error_setg(errp, 16888b020b5eSDaniel Henrique Barboza "the helper program '%s' returned an unexpected exit" 16898b020b5eSDaniel Henrique Barboza " status code (%d)", "pm-is-supported", status); 1690dc8764f0SLuiz Capitulino } 169111d0f125SLuiz Capitulino 16928b020b5eSDaniel Henrique Barboza return false; 1693a5fcf0e3SDaniel Henrique Barboza } 1694a5fcf0e3SDaniel Henrique Barboza 16958b020b5eSDaniel Henrique Barboza static void pmutils_suspend(SuspendMode mode, Error **errp) 1696246d76ebSDaniel Henrique Barboza { 1697246d76ebSDaniel Henrique Barboza Error *local_err = NULL; 16988b020b5eSDaniel Henrique Barboza const char *pmutils_binaries[3] = {"pm-hibernate", "pm-suspend", 16998b020b5eSDaniel Henrique Barboza "pm-suspend-hybrid"}; 17008b020b5eSDaniel Henrique Barboza const char *cmd[2] = {pmutils_binaries[mode], NULL}; 1701246d76ebSDaniel Henrique Barboza int status; 1702246d76ebSDaniel Henrique Barboza 17038b020b5eSDaniel Henrique Barboza status = run_process_child(cmd, &local_err); 1704246d76ebSDaniel Henrique Barboza 17058b020b5eSDaniel Henrique Barboza if (status == 0) { 1706246d76ebSDaniel Henrique Barboza return; 1707246d76ebSDaniel Henrique Barboza } 1708246d76ebSDaniel Henrique Barboza 17098b020b5eSDaniel Henrique Barboza if ((status == -1) && !local_err) { 17108b020b5eSDaniel Henrique Barboza error_setg(errp, "the helper program '%s' was not found", 17118b020b5eSDaniel Henrique Barboza pmutils_binaries[mode]); 1712246d76ebSDaniel Henrique Barboza return; 1713246d76ebSDaniel Henrique Barboza } 1714246d76ebSDaniel Henrique Barboza 1715246d76ebSDaniel Henrique Barboza if (local_err) { 1716246d76ebSDaniel Henrique Barboza error_propagate(errp, local_err); 17178b020b5eSDaniel Henrique Barboza } else { 1718246d76ebSDaniel Henrique Barboza error_setg(errp, 17198b020b5eSDaniel Henrique Barboza "the helper program '%s' returned an unexpected exit" 17208b020b5eSDaniel Henrique Barboza " status code (%d)", pmutils_binaries[mode], status); 17218b020b5eSDaniel Henrique Barboza } 1722246d76ebSDaniel Henrique Barboza } 1723246d76ebSDaniel Henrique Barboza 17248b020b5eSDaniel Henrique Barboza static bool linux_sys_state_supports_mode(SuspendMode mode, Error **errp) 1725a5fcf0e3SDaniel Henrique Barboza { 17268b020b5eSDaniel Henrique Barboza const char *sysfile_strs[3] = {"disk", "mem", NULL}; 17278b020b5eSDaniel Henrique Barboza const char *sysfile_str = sysfile_strs[mode]; 1728a5fcf0e3SDaniel Henrique Barboza char buf[32]; /* hopefully big enough */ 1729a5fcf0e3SDaniel Henrique Barboza int fd; 1730a5fcf0e3SDaniel Henrique Barboza ssize_t ret; 1731a5fcf0e3SDaniel Henrique Barboza 17328b020b5eSDaniel Henrique Barboza if (!sysfile_str) { 17338b020b5eSDaniel Henrique Barboza error_setg(errp, "unknown guest suspend mode"); 1734a5fcf0e3SDaniel Henrique Barboza return false; 1735a5fcf0e3SDaniel Henrique Barboza } 1736a5fcf0e3SDaniel Henrique Barboza 1737a5fcf0e3SDaniel Henrique Barboza fd = open(LINUX_SYS_STATE_FILE, O_RDONLY); 1738a5fcf0e3SDaniel Henrique Barboza if (fd < 0) { 1739a5fcf0e3SDaniel Henrique Barboza return false; 1740a5fcf0e3SDaniel Henrique Barboza } 1741a5fcf0e3SDaniel Henrique Barboza 1742a5fcf0e3SDaniel Henrique Barboza ret = read(fd, buf, sizeof(buf) - 1); 1743d9c745c1SPaolo Bonzini close(fd); 1744a5fcf0e3SDaniel Henrique Barboza if (ret <= 0) { 1745a5fcf0e3SDaniel Henrique Barboza return false; 1746a5fcf0e3SDaniel Henrique Barboza } 1747a5fcf0e3SDaniel Henrique Barboza buf[ret] = '\0'; 1748a5fcf0e3SDaniel Henrique Barboza 1749a5fcf0e3SDaniel Henrique Barboza if (strstr(buf, sysfile_str)) { 1750a5fcf0e3SDaniel Henrique Barboza return true; 1751a5fcf0e3SDaniel Henrique Barboza } 1752a5fcf0e3SDaniel Henrique Barboza return false; 1753a5fcf0e3SDaniel Henrique Barboza } 1754a5fcf0e3SDaniel Henrique Barboza 17558b020b5eSDaniel Henrique Barboza static void linux_sys_state_suspend(SuspendMode mode, Error **errp) 1756246d76ebSDaniel Henrique Barboza { 1757246d76ebSDaniel Henrique Barboza Error *local_err = NULL; 17588b020b5eSDaniel Henrique Barboza const char *sysfile_strs[3] = {"disk", "mem", NULL}; 17598b020b5eSDaniel Henrique Barboza const char *sysfile_str = sysfile_strs[mode]; 1760246d76ebSDaniel Henrique Barboza pid_t pid; 1761246d76ebSDaniel Henrique Barboza int status; 1762246d76ebSDaniel Henrique Barboza 17638b020b5eSDaniel Henrique Barboza if (!sysfile_str) { 1764246d76ebSDaniel Henrique Barboza error_setg(errp, "unknown guest suspend mode"); 1765246d76ebSDaniel Henrique Barboza return; 1766246d76ebSDaniel Henrique Barboza } 1767246d76ebSDaniel Henrique Barboza 1768246d76ebSDaniel Henrique Barboza pid = fork(); 1769246d76ebSDaniel Henrique Barboza if (!pid) { 1770246d76ebSDaniel Henrique Barboza /* child */ 1771246d76ebSDaniel Henrique Barboza int fd; 1772246d76ebSDaniel Henrique Barboza 1773246d76ebSDaniel Henrique Barboza setsid(); 1774246d76ebSDaniel Henrique Barboza reopen_fd_to_null(0); 1775246d76ebSDaniel Henrique Barboza reopen_fd_to_null(1); 1776246d76ebSDaniel Henrique Barboza reopen_fd_to_null(2); 1777246d76ebSDaniel Henrique Barboza 1778246d76ebSDaniel Henrique Barboza fd = open(LINUX_SYS_STATE_FILE, O_WRONLY); 1779246d76ebSDaniel Henrique Barboza if (fd < 0) { 1780246d76ebSDaniel Henrique Barboza _exit(EXIT_FAILURE); 1781246d76ebSDaniel Henrique Barboza } 1782246d76ebSDaniel Henrique Barboza 1783246d76ebSDaniel Henrique Barboza if (write(fd, sysfile_str, strlen(sysfile_str)) < 0) { 1784246d76ebSDaniel Henrique Barboza _exit(EXIT_FAILURE); 1785246d76ebSDaniel Henrique Barboza } 1786246d76ebSDaniel Henrique Barboza 1787246d76ebSDaniel Henrique Barboza _exit(EXIT_SUCCESS); 1788246d76ebSDaniel Henrique Barboza } else if (pid < 0) { 1789246d76ebSDaniel Henrique Barboza error_setg_errno(errp, errno, "failed to create child process"); 1790246d76ebSDaniel Henrique Barboza return; 1791246d76ebSDaniel Henrique Barboza } 1792246d76ebSDaniel Henrique Barboza 1793246d76ebSDaniel Henrique Barboza ga_wait_child(pid, &status, &local_err); 1794246d76ebSDaniel Henrique Barboza if (local_err) { 1795246d76ebSDaniel Henrique Barboza error_propagate(errp, local_err); 1796246d76ebSDaniel Henrique Barboza return; 1797246d76ebSDaniel Henrique Barboza } 1798246d76ebSDaniel Henrique Barboza 1799246d76ebSDaniel Henrique Barboza if (WEXITSTATUS(status)) { 1800246d76ebSDaniel Henrique Barboza error_setg(errp, "child process has failed to suspend"); 1801246d76ebSDaniel Henrique Barboza } 1802246d76ebSDaniel Henrique Barboza 1803246d76ebSDaniel Henrique Barboza } 1804246d76ebSDaniel Henrique Barboza 18058b020b5eSDaniel Henrique Barboza static void guest_suspend(SuspendMode mode, Error **errp) 180611d0f125SLuiz Capitulino { 18077b376087SLuiz Capitulino Error *local_err = NULL; 180873e1d8ebSDaniel Henrique Barboza bool mode_supported = false; 180911d0f125SLuiz Capitulino 181073e1d8ebSDaniel Henrique Barboza if (systemd_supports_mode(mode, &local_err)) { 181173e1d8ebSDaniel Henrique Barboza mode_supported = true; 1812067927d6SDaniel Henrique Barboza systemd_suspend(mode, &local_err); 181373e1d8ebSDaniel Henrique Barboza } 181473e1d8ebSDaniel Henrique Barboza 1815067927d6SDaniel Henrique Barboza if (!local_err) { 1816067927d6SDaniel Henrique Barboza return; 1817067927d6SDaniel Henrique Barboza } 1818067927d6SDaniel Henrique Barboza 1819067927d6SDaniel Henrique Barboza error_free(local_err); 18206a4a3853SVladimir Sementsov-Ogievskiy local_err = NULL; 1821067927d6SDaniel Henrique Barboza 182273e1d8ebSDaniel Henrique Barboza if (pmutils_supports_mode(mode, &local_err)) { 182373e1d8ebSDaniel Henrique Barboza mode_supported = true; 18248b020b5eSDaniel Henrique Barboza pmutils_suspend(mode, &local_err); 182573e1d8ebSDaniel Henrique Barboza } 182673e1d8ebSDaniel Henrique Barboza 1827246d76ebSDaniel Henrique Barboza if (!local_err) { 1828304a0fcbSDaniel Henrique Barboza return; 1829304a0fcbSDaniel Henrique Barboza } 1830304a0fcbSDaniel Henrique Barboza 1831246d76ebSDaniel Henrique Barboza error_free(local_err); 18326a4a3853SVladimir Sementsov-Ogievskiy local_err = NULL; 183311d0f125SLuiz Capitulino 183473e1d8ebSDaniel Henrique Barboza if (linux_sys_state_supports_mode(mode, &local_err)) { 183573e1d8ebSDaniel Henrique Barboza mode_supported = true; 18368b020b5eSDaniel Henrique Barboza linux_sys_state_suspend(mode, &local_err); 183773e1d8ebSDaniel Henrique Barboza } 183873e1d8ebSDaniel Henrique Barboza 183973e1d8ebSDaniel Henrique Barboza if (!mode_supported) { 18406a4a3853SVladimir Sementsov-Ogievskiy error_free(local_err); 184173e1d8ebSDaniel Henrique Barboza error_setg(errp, 184273e1d8ebSDaniel Henrique Barboza "the requested suspend mode is not supported by the guest"); 1843b2322003SMarkus Armbruster } else { 184477dbc81bSMarkus Armbruster error_propagate(errp, local_err); 18457b376087SLuiz Capitulino } 184611d0f125SLuiz Capitulino } 184711d0f125SLuiz Capitulino 184877dbc81bSMarkus Armbruster void qmp_guest_suspend_disk(Error **errp) 184911d0f125SLuiz Capitulino { 1850304a0fcbSDaniel Henrique Barboza guest_suspend(SUSPEND_MODE_DISK, errp); 185111d0f125SLuiz Capitulino } 185211d0f125SLuiz Capitulino 185377dbc81bSMarkus Armbruster void qmp_guest_suspend_ram(Error **errp) 1854fbf42210SLuiz Capitulino { 1855304a0fcbSDaniel Henrique Barboza guest_suspend(SUSPEND_MODE_RAM, errp); 1856fbf42210SLuiz Capitulino } 1857fbf42210SLuiz Capitulino 185877dbc81bSMarkus Armbruster void qmp_guest_suspend_hybrid(Error **errp) 185995f4f404SLuiz Capitulino { 1860304a0fcbSDaniel Henrique Barboza guest_suspend(SUSPEND_MODE_HYBRID, errp); 186195f4f404SLuiz Capitulino } 186295f4f404SLuiz Capitulino 18633424fc9fSMichal Privoznik static GuestNetworkInterfaceList * 18643424fc9fSMichal Privoznik guest_find_interface(GuestNetworkInterfaceList *head, 18653424fc9fSMichal Privoznik const char *name) 18663424fc9fSMichal Privoznik { 18673424fc9fSMichal Privoznik for (; head; head = head->next) { 18683424fc9fSMichal Privoznik if (strcmp(head->value->name, name) == 0) { 18693424fc9fSMichal Privoznik break; 18703424fc9fSMichal Privoznik } 18713424fc9fSMichal Privoznik } 18723424fc9fSMichal Privoznik 18733424fc9fSMichal Privoznik return head; 18743424fc9fSMichal Privoznik } 18753424fc9fSMichal Privoznik 187653f9fcb2SZhiPeng Lu static int guest_get_network_stats(const char *name, 187753f9fcb2SZhiPeng Lu GuestNetworkInterfaceStat *stats) 187853f9fcb2SZhiPeng Lu { 187953f9fcb2SZhiPeng Lu int name_len; 188053f9fcb2SZhiPeng Lu char const *devinfo = "/proc/net/dev"; 188153f9fcb2SZhiPeng Lu FILE *fp; 188253f9fcb2SZhiPeng Lu char *line = NULL, *colon; 188353f9fcb2SZhiPeng Lu size_t n = 0; 188453f9fcb2SZhiPeng Lu fp = fopen(devinfo, "r"); 188553f9fcb2SZhiPeng Lu if (!fp) { 188653f9fcb2SZhiPeng Lu return -1; 188753f9fcb2SZhiPeng Lu } 188853f9fcb2SZhiPeng Lu name_len = strlen(name); 188953f9fcb2SZhiPeng Lu while (getline(&line, &n, fp) != -1) { 189053f9fcb2SZhiPeng Lu long long dummy; 189153f9fcb2SZhiPeng Lu long long rx_bytes; 189253f9fcb2SZhiPeng Lu long long rx_packets; 189353f9fcb2SZhiPeng Lu long long rx_errs; 189453f9fcb2SZhiPeng Lu long long rx_dropped; 189553f9fcb2SZhiPeng Lu long long tx_bytes; 189653f9fcb2SZhiPeng Lu long long tx_packets; 189753f9fcb2SZhiPeng Lu long long tx_errs; 189853f9fcb2SZhiPeng Lu long long tx_dropped; 189953f9fcb2SZhiPeng Lu char *trim_line; 190053f9fcb2SZhiPeng Lu trim_line = g_strchug(line); 190153f9fcb2SZhiPeng Lu if (trim_line[0] == '\0') { 190253f9fcb2SZhiPeng Lu continue; 190353f9fcb2SZhiPeng Lu } 190453f9fcb2SZhiPeng Lu colon = strchr(trim_line, ':'); 190553f9fcb2SZhiPeng Lu if (!colon) { 190653f9fcb2SZhiPeng Lu continue; 190753f9fcb2SZhiPeng Lu } 190853f9fcb2SZhiPeng Lu if (colon - name_len == trim_line && 190953f9fcb2SZhiPeng Lu strncmp(trim_line, name, name_len) == 0) { 191053f9fcb2SZhiPeng Lu if (sscanf(colon + 1, 191153f9fcb2SZhiPeng Lu "%lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld", 191253f9fcb2SZhiPeng Lu &rx_bytes, &rx_packets, &rx_errs, &rx_dropped, 191353f9fcb2SZhiPeng Lu &dummy, &dummy, &dummy, &dummy, 191453f9fcb2SZhiPeng Lu &tx_bytes, &tx_packets, &tx_errs, &tx_dropped, 191553f9fcb2SZhiPeng Lu &dummy, &dummy, &dummy, &dummy) != 16) { 191653f9fcb2SZhiPeng Lu continue; 191753f9fcb2SZhiPeng Lu } 191853f9fcb2SZhiPeng Lu stats->rx_bytes = rx_bytes; 191953f9fcb2SZhiPeng Lu stats->rx_packets = rx_packets; 192053f9fcb2SZhiPeng Lu stats->rx_errs = rx_errs; 192153f9fcb2SZhiPeng Lu stats->rx_dropped = rx_dropped; 192253f9fcb2SZhiPeng Lu stats->tx_bytes = tx_bytes; 192353f9fcb2SZhiPeng Lu stats->tx_packets = tx_packets; 192453f9fcb2SZhiPeng Lu stats->tx_errs = tx_errs; 192553f9fcb2SZhiPeng Lu stats->tx_dropped = tx_dropped; 192653f9fcb2SZhiPeng Lu fclose(fp); 192753f9fcb2SZhiPeng Lu g_free(line); 192853f9fcb2SZhiPeng Lu return 0; 192953f9fcb2SZhiPeng Lu } 193053f9fcb2SZhiPeng Lu } 193153f9fcb2SZhiPeng Lu fclose(fp); 193253f9fcb2SZhiPeng Lu g_free(line); 193353f9fcb2SZhiPeng Lu g_debug("/proc/net/dev: Interface '%s' not found", name); 193453f9fcb2SZhiPeng Lu return -1; 193553f9fcb2SZhiPeng Lu } 193653f9fcb2SZhiPeng Lu 19373424fc9fSMichal Privoznik /* 19383424fc9fSMichal Privoznik * Build information about guest interfaces 19393424fc9fSMichal Privoznik */ 19403424fc9fSMichal Privoznik GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp) 19413424fc9fSMichal Privoznik { 19423424fc9fSMichal Privoznik GuestNetworkInterfaceList *head = NULL, *cur_item = NULL; 19433424fc9fSMichal Privoznik struct ifaddrs *ifap, *ifa; 19443424fc9fSMichal Privoznik 19453424fc9fSMichal Privoznik if (getifaddrs(&ifap) < 0) { 1946878a0ae0SLuiz Capitulino error_setg_errno(errp, errno, "getifaddrs failed"); 19473424fc9fSMichal Privoznik goto error; 19483424fc9fSMichal Privoznik } 19493424fc9fSMichal Privoznik 19503424fc9fSMichal Privoznik for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 19513424fc9fSMichal Privoznik GuestNetworkInterfaceList *info; 19523424fc9fSMichal Privoznik GuestIpAddressList **address_list = NULL, *address_item = NULL; 195353f9fcb2SZhiPeng Lu GuestNetworkInterfaceStat *interface_stat = NULL; 19543424fc9fSMichal Privoznik char addr4[INET_ADDRSTRLEN]; 19553424fc9fSMichal Privoznik char addr6[INET6_ADDRSTRLEN]; 19563424fc9fSMichal Privoznik int sock; 19573424fc9fSMichal Privoznik struct ifreq ifr; 19583424fc9fSMichal Privoznik unsigned char *mac_addr; 19593424fc9fSMichal Privoznik void *p; 19603424fc9fSMichal Privoznik 19613424fc9fSMichal Privoznik g_debug("Processing %s interface", ifa->ifa_name); 19623424fc9fSMichal Privoznik 19633424fc9fSMichal Privoznik info = guest_find_interface(head, ifa->ifa_name); 19643424fc9fSMichal Privoznik 19653424fc9fSMichal Privoznik if (!info) { 19663424fc9fSMichal Privoznik info = g_malloc0(sizeof(*info)); 19673424fc9fSMichal Privoznik info->value = g_malloc0(sizeof(*info->value)); 19683424fc9fSMichal Privoznik info->value->name = g_strdup(ifa->ifa_name); 19693424fc9fSMichal Privoznik 19703424fc9fSMichal Privoznik if (!cur_item) { 19713424fc9fSMichal Privoznik head = cur_item = info; 19723424fc9fSMichal Privoznik } else { 19733424fc9fSMichal Privoznik cur_item->next = info; 19743424fc9fSMichal Privoznik cur_item = info; 19753424fc9fSMichal Privoznik } 19763424fc9fSMichal Privoznik } 19773424fc9fSMichal Privoznik 19783424fc9fSMichal Privoznik if (!info->value->has_hardware_address && 19793424fc9fSMichal Privoznik ifa->ifa_flags & SIOCGIFHWADDR) { 19803424fc9fSMichal Privoznik /* we haven't obtained HW address yet */ 19813424fc9fSMichal Privoznik sock = socket(PF_INET, SOCK_STREAM, 0); 19823424fc9fSMichal Privoznik if (sock == -1) { 1983878a0ae0SLuiz Capitulino error_setg_errno(errp, errno, "failed to create socket"); 19843424fc9fSMichal Privoznik goto error; 19853424fc9fSMichal Privoznik } 19863424fc9fSMichal Privoznik 19873424fc9fSMichal Privoznik memset(&ifr, 0, sizeof(ifr)); 19881ab516edSJim Meyering pstrcpy(ifr.ifr_name, IF_NAMESIZE, info->value->name); 19893424fc9fSMichal Privoznik if (ioctl(sock, SIOCGIFHWADDR, &ifr) == -1) { 1990878a0ae0SLuiz Capitulino error_setg_errno(errp, errno, 1991878a0ae0SLuiz Capitulino "failed to get MAC address of %s", 1992878a0ae0SLuiz Capitulino ifa->ifa_name); 199310a2158fSMarkus Armbruster close(sock); 19943424fc9fSMichal Privoznik goto error; 19953424fc9fSMichal Privoznik } 19963424fc9fSMichal Privoznik 199710a2158fSMarkus Armbruster close(sock); 19983424fc9fSMichal Privoznik mac_addr = (unsigned char *) &ifr.ifr_hwaddr.sa_data; 19993424fc9fSMichal Privoznik 2000e4ada482SStefan Weil info->value->hardware_address = 2001e4ada482SStefan Weil g_strdup_printf("%02x:%02x:%02x:%02x:%02x:%02x", 20023424fc9fSMichal Privoznik (int) mac_addr[0], (int) mac_addr[1], 20033424fc9fSMichal Privoznik (int) mac_addr[2], (int) mac_addr[3], 2004e4ada482SStefan Weil (int) mac_addr[4], (int) mac_addr[5]); 20053424fc9fSMichal Privoznik 20063424fc9fSMichal Privoznik info->value->has_hardware_address = true; 20073424fc9fSMichal Privoznik } 20083424fc9fSMichal Privoznik 20093424fc9fSMichal Privoznik if (ifa->ifa_addr && 20103424fc9fSMichal Privoznik ifa->ifa_addr->sa_family == AF_INET) { 20113424fc9fSMichal Privoznik /* interface with IPv4 address */ 20123424fc9fSMichal Privoznik p = &((struct sockaddr_in *)ifa->ifa_addr)->sin_addr; 20133424fc9fSMichal Privoznik if (!inet_ntop(AF_INET, p, addr4, sizeof(addr4))) { 2014878a0ae0SLuiz Capitulino error_setg_errno(errp, errno, "inet_ntop failed"); 20153424fc9fSMichal Privoznik goto error; 20163424fc9fSMichal Privoznik } 20173424fc9fSMichal Privoznik 201810a2158fSMarkus Armbruster address_item = g_malloc0(sizeof(*address_item)); 201910a2158fSMarkus Armbruster address_item->value = g_malloc0(sizeof(*address_item->value)); 20203424fc9fSMichal Privoznik address_item->value->ip_address = g_strdup(addr4); 20213424fc9fSMichal Privoznik address_item->value->ip_address_type = GUEST_IP_ADDRESS_TYPE_IPV4; 20223424fc9fSMichal Privoznik 20233424fc9fSMichal Privoznik if (ifa->ifa_netmask) { 20243424fc9fSMichal Privoznik /* Count the number of set bits in netmask. 20253424fc9fSMichal Privoznik * This is safe as '1' and '0' cannot be shuffled in netmask. */ 20263424fc9fSMichal Privoznik p = &((struct sockaddr_in *)ifa->ifa_netmask)->sin_addr; 20273424fc9fSMichal Privoznik address_item->value->prefix = ctpop32(((uint32_t *) p)[0]); 20283424fc9fSMichal Privoznik } 20293424fc9fSMichal Privoznik } else if (ifa->ifa_addr && 20303424fc9fSMichal Privoznik ifa->ifa_addr->sa_family == AF_INET6) { 20313424fc9fSMichal Privoznik /* interface with IPv6 address */ 20323424fc9fSMichal Privoznik p = &((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_addr; 20333424fc9fSMichal Privoznik if (!inet_ntop(AF_INET6, p, addr6, sizeof(addr6))) { 2034878a0ae0SLuiz Capitulino error_setg_errno(errp, errno, "inet_ntop failed"); 20353424fc9fSMichal Privoznik goto error; 20363424fc9fSMichal Privoznik } 20373424fc9fSMichal Privoznik 203810a2158fSMarkus Armbruster address_item = g_malloc0(sizeof(*address_item)); 203910a2158fSMarkus Armbruster address_item->value = g_malloc0(sizeof(*address_item->value)); 20403424fc9fSMichal Privoznik address_item->value->ip_address = g_strdup(addr6); 20413424fc9fSMichal Privoznik address_item->value->ip_address_type = GUEST_IP_ADDRESS_TYPE_IPV6; 20423424fc9fSMichal Privoznik 20433424fc9fSMichal Privoznik if (ifa->ifa_netmask) { 20443424fc9fSMichal Privoznik /* Count the number of set bits in netmask. 20453424fc9fSMichal Privoznik * This is safe as '1' and '0' cannot be shuffled in netmask. */ 20463424fc9fSMichal Privoznik p = &((struct sockaddr_in6 *)ifa->ifa_netmask)->sin6_addr; 20473424fc9fSMichal Privoznik address_item->value->prefix = 20483424fc9fSMichal Privoznik ctpop32(((uint32_t *) p)[0]) + 20493424fc9fSMichal Privoznik ctpop32(((uint32_t *) p)[1]) + 20503424fc9fSMichal Privoznik ctpop32(((uint32_t *) p)[2]) + 20513424fc9fSMichal Privoznik ctpop32(((uint32_t *) p)[3]); 20523424fc9fSMichal Privoznik } 20533424fc9fSMichal Privoznik } 20543424fc9fSMichal Privoznik 20553424fc9fSMichal Privoznik if (!address_item) { 20563424fc9fSMichal Privoznik continue; 20573424fc9fSMichal Privoznik } 20583424fc9fSMichal Privoznik 20593424fc9fSMichal Privoznik address_list = &info->value->ip_addresses; 20603424fc9fSMichal Privoznik 20613424fc9fSMichal Privoznik while (*address_list && (*address_list)->next) { 20623424fc9fSMichal Privoznik address_list = &(*address_list)->next; 20633424fc9fSMichal Privoznik } 20643424fc9fSMichal Privoznik 20653424fc9fSMichal Privoznik if (!*address_list) { 20663424fc9fSMichal Privoznik *address_list = address_item; 20673424fc9fSMichal Privoznik } else { 20683424fc9fSMichal Privoznik (*address_list)->next = address_item; 20693424fc9fSMichal Privoznik } 20703424fc9fSMichal Privoznik 20713424fc9fSMichal Privoznik info->value->has_ip_addresses = true; 20723424fc9fSMichal Privoznik 207353f9fcb2SZhiPeng Lu if (!info->value->has_statistics) { 207453f9fcb2SZhiPeng Lu interface_stat = g_malloc0(sizeof(*interface_stat)); 207553f9fcb2SZhiPeng Lu if (guest_get_network_stats(info->value->name, 207653f9fcb2SZhiPeng Lu interface_stat) == -1) { 207753f9fcb2SZhiPeng Lu info->value->has_statistics = false; 207853f9fcb2SZhiPeng Lu g_free(interface_stat); 207953f9fcb2SZhiPeng Lu } else { 208053f9fcb2SZhiPeng Lu info->value->statistics = interface_stat; 208153f9fcb2SZhiPeng Lu info->value->has_statistics = true; 208253f9fcb2SZhiPeng Lu } 208353f9fcb2SZhiPeng Lu } 20843424fc9fSMichal Privoznik } 20853424fc9fSMichal Privoznik 20863424fc9fSMichal Privoznik freeifaddrs(ifap); 20873424fc9fSMichal Privoznik return head; 20883424fc9fSMichal Privoznik 20893424fc9fSMichal Privoznik error: 20903424fc9fSMichal Privoznik freeifaddrs(ifap); 20913424fc9fSMichal Privoznik qapi_free_GuestNetworkInterfaceList(head); 20923424fc9fSMichal Privoznik return NULL; 20933424fc9fSMichal Privoznik } 20943424fc9fSMichal Privoznik 209577dbc81bSMarkus Armbruster #define SYSCONF_EXACT(name, errp) sysconf_exact((name), #name, (errp)) 2096d2baff62SLaszlo Ersek 209777dbc81bSMarkus Armbruster static long sysconf_exact(int name, const char *name_str, Error **errp) 2098d2baff62SLaszlo Ersek { 2099d2baff62SLaszlo Ersek long ret; 2100d2baff62SLaszlo Ersek 2101d2baff62SLaszlo Ersek errno = 0; 2102d2baff62SLaszlo Ersek ret = sysconf(name); 2103d2baff62SLaszlo Ersek if (ret == -1) { 2104d2baff62SLaszlo Ersek if (errno == 0) { 210577dbc81bSMarkus Armbruster error_setg(errp, "sysconf(%s): value indefinite", name_str); 2106d2baff62SLaszlo Ersek } else { 210777dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "sysconf(%s)", name_str); 2108d2baff62SLaszlo Ersek } 2109d2baff62SLaszlo Ersek } 2110d2baff62SLaszlo Ersek return ret; 2111d2baff62SLaszlo Ersek } 2112d2baff62SLaszlo Ersek 2113d2baff62SLaszlo Ersek /* Transfer online/offline status between @vcpu and the guest system. 2114d2baff62SLaszlo Ersek * 2115d2baff62SLaszlo Ersek * On input either @errp or *@errp must be NULL. 2116d2baff62SLaszlo Ersek * 2117d2baff62SLaszlo Ersek * In system-to-@vcpu direction, the following @vcpu fields are accessed: 2118d2baff62SLaszlo Ersek * - R: vcpu->logical_id 2119d2baff62SLaszlo Ersek * - W: vcpu->online 2120d2baff62SLaszlo Ersek * - W: vcpu->can_offline 2121d2baff62SLaszlo Ersek * 2122d2baff62SLaszlo Ersek * In @vcpu-to-system direction, the following @vcpu fields are accessed: 2123d2baff62SLaszlo Ersek * - R: vcpu->logical_id 2124d2baff62SLaszlo Ersek * - R: vcpu->online 2125d2baff62SLaszlo Ersek * 2126d2baff62SLaszlo Ersek * Written members remain unmodified on error. 2127d2baff62SLaszlo Ersek */ 2128d2baff62SLaszlo Ersek static void transfer_vcpu(GuestLogicalProcessor *vcpu, bool sys2vcpu, 2129b4bf912aSIgor Mammedov char *dirpath, Error **errp) 2130d2baff62SLaszlo Ersek { 2131b4bf912aSIgor Mammedov int fd; 2132b4bf912aSIgor Mammedov int res; 2133d2baff62SLaszlo Ersek int dirfd; 2134b4bf912aSIgor Mammedov static const char fn[] = "online"; 2135d2baff62SLaszlo Ersek 2136d2baff62SLaszlo Ersek dirfd = open(dirpath, O_RDONLY | O_DIRECTORY); 2137d2baff62SLaszlo Ersek if (dirfd == -1) { 2138d2baff62SLaszlo Ersek error_setg_errno(errp, errno, "open(\"%s\")", dirpath); 2139b4bf912aSIgor Mammedov return; 2140b4bf912aSIgor Mammedov } 2141d2baff62SLaszlo Ersek 2142d2baff62SLaszlo Ersek fd = openat(dirfd, fn, sys2vcpu ? O_RDONLY : O_RDWR); 2143d2baff62SLaszlo Ersek if (fd == -1) { 2144d2baff62SLaszlo Ersek if (errno != ENOENT) { 2145d2baff62SLaszlo Ersek error_setg_errno(errp, errno, "open(\"%s/%s\")", dirpath, fn); 2146d2baff62SLaszlo Ersek } else if (sys2vcpu) { 2147d2baff62SLaszlo Ersek vcpu->online = true; 2148d2baff62SLaszlo Ersek vcpu->can_offline = false; 2149d2baff62SLaszlo Ersek } else if (!vcpu->online) { 2150d2baff62SLaszlo Ersek error_setg(errp, "logical processor #%" PRId64 " can't be " 2151d2baff62SLaszlo Ersek "offlined", vcpu->logical_id); 2152d2baff62SLaszlo Ersek } /* otherwise pretend successful re-onlining */ 2153d2baff62SLaszlo Ersek } else { 2154d2baff62SLaszlo Ersek unsigned char status; 2155d2baff62SLaszlo Ersek 2156d2baff62SLaszlo Ersek res = pread(fd, &status, 1, 0); 2157d2baff62SLaszlo Ersek if (res == -1) { 2158d2baff62SLaszlo Ersek error_setg_errno(errp, errno, "pread(\"%s/%s\")", dirpath, fn); 2159d2baff62SLaszlo Ersek } else if (res == 0) { 2160d2baff62SLaszlo Ersek error_setg(errp, "pread(\"%s/%s\"): unexpected EOF", dirpath, 2161d2baff62SLaszlo Ersek fn); 2162d2baff62SLaszlo Ersek } else if (sys2vcpu) { 2163d2baff62SLaszlo Ersek vcpu->online = (status != '0'); 2164d2baff62SLaszlo Ersek vcpu->can_offline = true; 2165d2baff62SLaszlo Ersek } else if (vcpu->online != (status != '0')) { 2166d2baff62SLaszlo Ersek status = '0' + vcpu->online; 2167d2baff62SLaszlo Ersek if (pwrite(fd, &status, 1, 0) == -1) { 2168d2baff62SLaszlo Ersek error_setg_errno(errp, errno, "pwrite(\"%s/%s\")", dirpath, 2169d2baff62SLaszlo Ersek fn); 2170d2baff62SLaszlo Ersek } 2171d2baff62SLaszlo Ersek } /* otherwise pretend successful re-(on|off)-lining */ 2172d2baff62SLaszlo Ersek 2173d2baff62SLaszlo Ersek res = close(fd); 2174d2baff62SLaszlo Ersek g_assert(res == 0); 2175d2baff62SLaszlo Ersek } 2176d2baff62SLaszlo Ersek 2177d2baff62SLaszlo Ersek res = close(dirfd); 2178d2baff62SLaszlo Ersek g_assert(res == 0); 2179d2baff62SLaszlo Ersek } 2180d2baff62SLaszlo Ersek 2181d2baff62SLaszlo Ersek GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp) 2182d2baff62SLaszlo Ersek { 2183d2baff62SLaszlo Ersek int64_t current; 2184d2baff62SLaszlo Ersek GuestLogicalProcessorList *head, **link; 2185d2baff62SLaszlo Ersek long sc_max; 2186d2baff62SLaszlo Ersek Error *local_err = NULL; 2187d2baff62SLaszlo Ersek 2188d2baff62SLaszlo Ersek current = 0; 2189d2baff62SLaszlo Ersek head = NULL; 2190d2baff62SLaszlo Ersek link = &head; 2191d2baff62SLaszlo Ersek sc_max = SYSCONF_EXACT(_SC_NPROCESSORS_CONF, &local_err); 2192d2baff62SLaszlo Ersek 2193d2baff62SLaszlo Ersek while (local_err == NULL && current < sc_max) { 2194d2baff62SLaszlo Ersek GuestLogicalProcessor *vcpu; 2195d2baff62SLaszlo Ersek GuestLogicalProcessorList *entry; 2196b4bf912aSIgor Mammedov int64_t id = current++; 2197b4bf912aSIgor Mammedov char *path = g_strdup_printf("/sys/devices/system/cpu/cpu%" PRId64 "/", 2198b4bf912aSIgor Mammedov id); 2199d2baff62SLaszlo Ersek 2200b4bf912aSIgor Mammedov if (g_file_test(path, G_FILE_TEST_EXISTS)) { 2201d2baff62SLaszlo Ersek vcpu = g_malloc0(sizeof *vcpu); 2202b4bf912aSIgor Mammedov vcpu->logical_id = id; 2203d2baff62SLaszlo Ersek vcpu->has_can_offline = true; /* lolspeak ftw */ 2204b4bf912aSIgor Mammedov transfer_vcpu(vcpu, true, path, &local_err); 2205d2baff62SLaszlo Ersek entry = g_malloc0(sizeof *entry); 2206d2baff62SLaszlo Ersek entry->value = vcpu; 2207d2baff62SLaszlo Ersek *link = entry; 2208d2baff62SLaszlo Ersek link = &entry->next; 2209d2baff62SLaszlo Ersek } 2210b4bf912aSIgor Mammedov g_free(path); 2211b4bf912aSIgor Mammedov } 2212d2baff62SLaszlo Ersek 2213d2baff62SLaszlo Ersek if (local_err == NULL) { 2214d2baff62SLaszlo Ersek /* there's no guest with zero VCPUs */ 2215d2baff62SLaszlo Ersek g_assert(head != NULL); 2216d2baff62SLaszlo Ersek return head; 2217d2baff62SLaszlo Ersek } 2218d2baff62SLaszlo Ersek 2219d2baff62SLaszlo Ersek qapi_free_GuestLogicalProcessorList(head); 2220d2baff62SLaszlo Ersek error_propagate(errp, local_err); 2221d2baff62SLaszlo Ersek return NULL; 2222d2baff62SLaszlo Ersek } 2223d2baff62SLaszlo Ersek 2224cbb65fc2SLaszlo Ersek int64_t qmp_guest_set_vcpus(GuestLogicalProcessorList *vcpus, Error **errp) 2225cbb65fc2SLaszlo Ersek { 2226cbb65fc2SLaszlo Ersek int64_t processed; 2227cbb65fc2SLaszlo Ersek Error *local_err = NULL; 2228cbb65fc2SLaszlo Ersek 2229cbb65fc2SLaszlo Ersek processed = 0; 2230cbb65fc2SLaszlo Ersek while (vcpus != NULL) { 2231b4bf912aSIgor Mammedov char *path = g_strdup_printf("/sys/devices/system/cpu/cpu%" PRId64 "/", 2232b4bf912aSIgor Mammedov vcpus->value->logical_id); 2233b4bf912aSIgor Mammedov 2234b4bf912aSIgor Mammedov transfer_vcpu(vcpus->value, false, path, &local_err); 2235b4bf912aSIgor Mammedov g_free(path); 2236cbb65fc2SLaszlo Ersek if (local_err != NULL) { 2237cbb65fc2SLaszlo Ersek break; 2238cbb65fc2SLaszlo Ersek } 2239cbb65fc2SLaszlo Ersek ++processed; 2240cbb65fc2SLaszlo Ersek vcpus = vcpus->next; 2241cbb65fc2SLaszlo Ersek } 2242cbb65fc2SLaszlo Ersek 2243cbb65fc2SLaszlo Ersek if (local_err != NULL) { 2244cbb65fc2SLaszlo Ersek if (processed == 0) { 2245cbb65fc2SLaszlo Ersek error_propagate(errp, local_err); 2246cbb65fc2SLaszlo Ersek } else { 2247cbb65fc2SLaszlo Ersek error_free(local_err); 2248cbb65fc2SLaszlo Ersek } 2249cbb65fc2SLaszlo Ersek } 2250cbb65fc2SLaszlo Ersek 2251cbb65fc2SLaszlo Ersek return processed; 2252cbb65fc2SLaszlo Ersek } 2253cbb65fc2SLaszlo Ersek 2254215a2771SDaniel P. Berrange void qmp_guest_set_user_password(const char *username, 2255215a2771SDaniel P. Berrange const char *password, 2256215a2771SDaniel P. Berrange bool crypted, 2257215a2771SDaniel P. Berrange Error **errp) 2258215a2771SDaniel P. Berrange { 2259215a2771SDaniel P. Berrange Error *local_err = NULL; 2260215a2771SDaniel P. Berrange char *passwd_path = NULL; 2261215a2771SDaniel P. Berrange pid_t pid; 2262215a2771SDaniel P. Berrange int status; 2263215a2771SDaniel P. Berrange int datafd[2] = { -1, -1 }; 2264215a2771SDaniel P. Berrange char *rawpasswddata = NULL; 2265215a2771SDaniel P. Berrange size_t rawpasswdlen; 2266215a2771SDaniel P. Berrange char *chpasswddata = NULL; 2267215a2771SDaniel P. Berrange size_t chpasswdlen; 2268215a2771SDaniel P. Berrange 2269920639caSDaniel P. Berrange rawpasswddata = (char *)qbase64_decode(password, -1, &rawpasswdlen, errp); 2270920639caSDaniel P. Berrange if (!rawpasswddata) { 2271920639caSDaniel P. Berrange return; 2272920639caSDaniel P. Berrange } 2273215a2771SDaniel P. Berrange rawpasswddata = g_renew(char, rawpasswddata, rawpasswdlen + 1); 2274215a2771SDaniel P. Berrange rawpasswddata[rawpasswdlen] = '\0'; 2275215a2771SDaniel P. Berrange 2276215a2771SDaniel P. Berrange if (strchr(rawpasswddata, '\n')) { 2277215a2771SDaniel P. Berrange error_setg(errp, "forbidden characters in raw password"); 2278215a2771SDaniel P. Berrange goto out; 2279215a2771SDaniel P. Berrange } 2280215a2771SDaniel P. Berrange 2281215a2771SDaniel P. Berrange if (strchr(username, '\n') || 2282215a2771SDaniel P. Berrange strchr(username, ':')) { 2283215a2771SDaniel P. Berrange error_setg(errp, "forbidden characters in username"); 2284215a2771SDaniel P. Berrange goto out; 2285215a2771SDaniel P. Berrange } 2286215a2771SDaniel P. Berrange 2287215a2771SDaniel P. Berrange chpasswddata = g_strdup_printf("%s:%s\n", username, rawpasswddata); 2288215a2771SDaniel P. Berrange chpasswdlen = strlen(chpasswddata); 2289215a2771SDaniel P. Berrange 2290215a2771SDaniel P. Berrange passwd_path = g_find_program_in_path("chpasswd"); 2291215a2771SDaniel P. Berrange 2292215a2771SDaniel P. Berrange if (!passwd_path) { 2293215a2771SDaniel P. Berrange error_setg(errp, "cannot find 'passwd' program in PATH"); 2294215a2771SDaniel P. Berrange goto out; 2295215a2771SDaniel P. Berrange } 2296215a2771SDaniel P. Berrange 2297215a2771SDaniel P. Berrange if (pipe(datafd) < 0) { 2298215a2771SDaniel P. Berrange error_setg(errp, "cannot create pipe FDs"); 2299215a2771SDaniel P. Berrange goto out; 2300215a2771SDaniel P. Berrange } 2301215a2771SDaniel P. Berrange 2302215a2771SDaniel P. Berrange pid = fork(); 2303215a2771SDaniel P. Berrange if (pid == 0) { 2304215a2771SDaniel P. Berrange close(datafd[1]); 2305215a2771SDaniel P. Berrange /* child */ 2306215a2771SDaniel P. Berrange setsid(); 2307215a2771SDaniel P. Berrange dup2(datafd[0], 0); 2308215a2771SDaniel P. Berrange reopen_fd_to_null(1); 2309215a2771SDaniel P. Berrange reopen_fd_to_null(2); 2310215a2771SDaniel P. Berrange 2311215a2771SDaniel P. Berrange if (crypted) { 2312215a2771SDaniel P. Berrange execle(passwd_path, "chpasswd", "-e", NULL, environ); 2313215a2771SDaniel P. Berrange } else { 2314215a2771SDaniel P. Berrange execle(passwd_path, "chpasswd", NULL, environ); 2315215a2771SDaniel P. Berrange } 2316215a2771SDaniel P. Berrange _exit(EXIT_FAILURE); 2317215a2771SDaniel P. Berrange } else if (pid < 0) { 2318215a2771SDaniel P. Berrange error_setg_errno(errp, errno, "failed to create child process"); 2319215a2771SDaniel P. Berrange goto out; 2320215a2771SDaniel P. Berrange } 2321215a2771SDaniel P. Berrange close(datafd[0]); 2322215a2771SDaniel P. Berrange datafd[0] = -1; 2323215a2771SDaniel P. Berrange 2324215a2771SDaniel P. Berrange if (qemu_write_full(datafd[1], chpasswddata, chpasswdlen) != chpasswdlen) { 2325215a2771SDaniel P. Berrange error_setg_errno(errp, errno, "cannot write new account password"); 2326215a2771SDaniel P. Berrange goto out; 2327215a2771SDaniel P. Berrange } 2328215a2771SDaniel P. Berrange close(datafd[1]); 2329215a2771SDaniel P. Berrange datafd[1] = -1; 2330215a2771SDaniel P. Berrange 2331215a2771SDaniel P. Berrange ga_wait_child(pid, &status, &local_err); 2332215a2771SDaniel P. Berrange if (local_err) { 2333215a2771SDaniel P. Berrange error_propagate(errp, local_err); 2334215a2771SDaniel P. Berrange goto out; 2335215a2771SDaniel P. Berrange } 2336215a2771SDaniel P. Berrange 2337215a2771SDaniel P. Berrange if (!WIFEXITED(status)) { 2338215a2771SDaniel P. Berrange error_setg(errp, "child process has terminated abnormally"); 2339215a2771SDaniel P. Berrange goto out; 2340215a2771SDaniel P. Berrange } 2341215a2771SDaniel P. Berrange 2342215a2771SDaniel P. Berrange if (WEXITSTATUS(status)) { 2343215a2771SDaniel P. Berrange error_setg(errp, "child process has failed to set user password"); 2344215a2771SDaniel P. Berrange goto out; 2345215a2771SDaniel P. Berrange } 2346215a2771SDaniel P. Berrange 2347215a2771SDaniel P. Berrange out: 2348215a2771SDaniel P. Berrange g_free(chpasswddata); 2349215a2771SDaniel P. Berrange g_free(rawpasswddata); 2350215a2771SDaniel P. Berrange g_free(passwd_path); 2351215a2771SDaniel P. Berrange if (datafd[0] != -1) { 2352215a2771SDaniel P. Berrange close(datafd[0]); 2353215a2771SDaniel P. Berrange } 2354215a2771SDaniel P. Berrange if (datafd[1] != -1) { 2355215a2771SDaniel P. Berrange close(datafd[1]); 2356215a2771SDaniel P. Berrange } 2357215a2771SDaniel P. Berrange } 2358215a2771SDaniel P. Berrange 2359bd240fcaSzhanghailiang static void ga_read_sysfs_file(int dirfd, const char *pathname, char *buf, 2360bd240fcaSzhanghailiang int size, Error **errp) 2361bd240fcaSzhanghailiang { 2362bd240fcaSzhanghailiang int fd; 2363bd240fcaSzhanghailiang int res; 2364bd240fcaSzhanghailiang 2365bd240fcaSzhanghailiang errno = 0; 2366bd240fcaSzhanghailiang fd = openat(dirfd, pathname, O_RDONLY); 2367bd240fcaSzhanghailiang if (fd == -1) { 2368bd240fcaSzhanghailiang error_setg_errno(errp, errno, "open sysfs file \"%s\"", pathname); 2369bd240fcaSzhanghailiang return; 2370bd240fcaSzhanghailiang } 2371bd240fcaSzhanghailiang 2372bd240fcaSzhanghailiang res = pread(fd, buf, size, 0); 2373bd240fcaSzhanghailiang if (res == -1) { 2374bd240fcaSzhanghailiang error_setg_errno(errp, errno, "pread sysfs file \"%s\"", pathname); 2375bd240fcaSzhanghailiang } else if (res == 0) { 2376bd240fcaSzhanghailiang error_setg(errp, "pread sysfs file \"%s\": unexpected EOF", pathname); 2377bd240fcaSzhanghailiang } 2378bd240fcaSzhanghailiang close(fd); 2379bd240fcaSzhanghailiang } 2380bd240fcaSzhanghailiang 2381bd240fcaSzhanghailiang static void ga_write_sysfs_file(int dirfd, const char *pathname, 2382bd240fcaSzhanghailiang const char *buf, int size, Error **errp) 2383bd240fcaSzhanghailiang { 2384bd240fcaSzhanghailiang int fd; 2385bd240fcaSzhanghailiang 2386bd240fcaSzhanghailiang errno = 0; 2387bd240fcaSzhanghailiang fd = openat(dirfd, pathname, O_WRONLY); 2388bd240fcaSzhanghailiang if (fd == -1) { 2389bd240fcaSzhanghailiang error_setg_errno(errp, errno, "open sysfs file \"%s\"", pathname); 2390bd240fcaSzhanghailiang return; 2391bd240fcaSzhanghailiang } 2392bd240fcaSzhanghailiang 2393bd240fcaSzhanghailiang if (pwrite(fd, buf, size, 0) == -1) { 2394bd240fcaSzhanghailiang error_setg_errno(errp, errno, "pwrite sysfs file \"%s\"", pathname); 2395bd240fcaSzhanghailiang } 2396bd240fcaSzhanghailiang 2397bd240fcaSzhanghailiang close(fd); 2398bd240fcaSzhanghailiang } 2399bd240fcaSzhanghailiang 2400bd240fcaSzhanghailiang /* Transfer online/offline status between @mem_blk and the guest system. 2401bd240fcaSzhanghailiang * 2402bd240fcaSzhanghailiang * On input either @errp or *@errp must be NULL. 2403bd240fcaSzhanghailiang * 2404bd240fcaSzhanghailiang * In system-to-@mem_blk direction, the following @mem_blk fields are accessed: 2405bd240fcaSzhanghailiang * - R: mem_blk->phys_index 2406bd240fcaSzhanghailiang * - W: mem_blk->online 2407bd240fcaSzhanghailiang * - W: mem_blk->can_offline 2408bd240fcaSzhanghailiang * 2409bd240fcaSzhanghailiang * In @mem_blk-to-system direction, the following @mem_blk fields are accessed: 2410bd240fcaSzhanghailiang * - R: mem_blk->phys_index 2411bd240fcaSzhanghailiang * - R: mem_blk->online 2412bd240fcaSzhanghailiang *- R: mem_blk->can_offline 2413bd240fcaSzhanghailiang * Written members remain unmodified on error. 2414bd240fcaSzhanghailiang */ 2415bd240fcaSzhanghailiang static void transfer_memory_block(GuestMemoryBlock *mem_blk, bool sys2memblk, 2416bd240fcaSzhanghailiang GuestMemoryBlockResponse *result, 2417bd240fcaSzhanghailiang Error **errp) 2418bd240fcaSzhanghailiang { 2419bd240fcaSzhanghailiang char *dirpath; 2420bd240fcaSzhanghailiang int dirfd; 2421bd240fcaSzhanghailiang char *status; 2422bd240fcaSzhanghailiang Error *local_err = NULL; 2423bd240fcaSzhanghailiang 2424bd240fcaSzhanghailiang if (!sys2memblk) { 2425bd240fcaSzhanghailiang DIR *dp; 2426bd240fcaSzhanghailiang 2427bd240fcaSzhanghailiang if (!result) { 2428bd240fcaSzhanghailiang error_setg(errp, "Internal error, 'result' should not be NULL"); 2429bd240fcaSzhanghailiang return; 2430bd240fcaSzhanghailiang } 2431bd240fcaSzhanghailiang errno = 0; 2432bd240fcaSzhanghailiang dp = opendir("/sys/devices/system/memory/"); 2433bd240fcaSzhanghailiang /* if there is no 'memory' directory in sysfs, 2434bd240fcaSzhanghailiang * we think this VM does not support online/offline memory block, 2435bd240fcaSzhanghailiang * any other solution? 2436bd240fcaSzhanghailiang */ 24379879f5acSPhilippe Mathieu-Daudé if (!dp) { 24389879f5acSPhilippe Mathieu-Daudé if (errno == ENOENT) { 2439bd240fcaSzhanghailiang result->response = 2440bd240fcaSzhanghailiang GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_NOT_SUPPORTED; 24419879f5acSPhilippe Mathieu-Daudé } 2442bd240fcaSzhanghailiang goto out1; 2443bd240fcaSzhanghailiang } 2444bd240fcaSzhanghailiang closedir(dp); 2445bd240fcaSzhanghailiang } 2446bd240fcaSzhanghailiang 2447bd240fcaSzhanghailiang dirpath = g_strdup_printf("/sys/devices/system/memory/memory%" PRId64 "/", 2448bd240fcaSzhanghailiang mem_blk->phys_index); 2449bd240fcaSzhanghailiang dirfd = open(dirpath, O_RDONLY | O_DIRECTORY); 2450bd240fcaSzhanghailiang if (dirfd == -1) { 2451bd240fcaSzhanghailiang if (sys2memblk) { 2452bd240fcaSzhanghailiang error_setg_errno(errp, errno, "open(\"%s\")", dirpath); 2453bd240fcaSzhanghailiang } else { 2454bd240fcaSzhanghailiang if (errno == ENOENT) { 2455bd240fcaSzhanghailiang result->response = GUEST_MEMORY_BLOCK_RESPONSE_TYPE_NOT_FOUND; 2456bd240fcaSzhanghailiang } else { 2457bd240fcaSzhanghailiang result->response = 2458bd240fcaSzhanghailiang GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_FAILED; 2459bd240fcaSzhanghailiang } 2460bd240fcaSzhanghailiang } 2461bd240fcaSzhanghailiang g_free(dirpath); 2462bd240fcaSzhanghailiang goto out1; 2463bd240fcaSzhanghailiang } 2464bd240fcaSzhanghailiang g_free(dirpath); 2465bd240fcaSzhanghailiang 2466bd240fcaSzhanghailiang status = g_malloc0(10); 2467bd240fcaSzhanghailiang ga_read_sysfs_file(dirfd, "state", status, 10, &local_err); 2468bd240fcaSzhanghailiang if (local_err) { 2469bd240fcaSzhanghailiang /* treat with sysfs file that not exist in old kernel */ 2470bd240fcaSzhanghailiang if (errno == ENOENT) { 2471bd240fcaSzhanghailiang error_free(local_err); 2472bd240fcaSzhanghailiang if (sys2memblk) { 2473bd240fcaSzhanghailiang mem_blk->online = true; 2474bd240fcaSzhanghailiang mem_blk->can_offline = false; 2475bd240fcaSzhanghailiang } else if (!mem_blk->online) { 2476bd240fcaSzhanghailiang result->response = 2477bd240fcaSzhanghailiang GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_NOT_SUPPORTED; 2478bd240fcaSzhanghailiang } 2479bd240fcaSzhanghailiang } else { 2480bd240fcaSzhanghailiang if (sys2memblk) { 2481bd240fcaSzhanghailiang error_propagate(errp, local_err); 2482bd240fcaSzhanghailiang } else { 2483b368123dSMarkus Armbruster error_free(local_err); 2484bd240fcaSzhanghailiang result->response = 2485bd240fcaSzhanghailiang GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_FAILED; 2486bd240fcaSzhanghailiang } 2487bd240fcaSzhanghailiang } 2488bd240fcaSzhanghailiang goto out2; 2489bd240fcaSzhanghailiang } 2490bd240fcaSzhanghailiang 2491bd240fcaSzhanghailiang if (sys2memblk) { 2492bd240fcaSzhanghailiang char removable = '0'; 2493bd240fcaSzhanghailiang 2494bd240fcaSzhanghailiang mem_blk->online = (strncmp(status, "online", 6) == 0); 2495bd240fcaSzhanghailiang 2496bd240fcaSzhanghailiang ga_read_sysfs_file(dirfd, "removable", &removable, 1, &local_err); 2497bd240fcaSzhanghailiang if (local_err) { 249867cc32ebSVeres Lajos /* if no 'removable' file, it doesn't support offline mem blk */ 2499bd240fcaSzhanghailiang if (errno == ENOENT) { 2500bd240fcaSzhanghailiang error_free(local_err); 2501bd240fcaSzhanghailiang mem_blk->can_offline = false; 2502bd240fcaSzhanghailiang } else { 2503bd240fcaSzhanghailiang error_propagate(errp, local_err); 2504bd240fcaSzhanghailiang } 2505bd240fcaSzhanghailiang } else { 2506bd240fcaSzhanghailiang mem_blk->can_offline = (removable != '0'); 2507bd240fcaSzhanghailiang } 2508bd240fcaSzhanghailiang } else { 2509bd240fcaSzhanghailiang if (mem_blk->online != (strncmp(status, "online", 6) == 0)) { 25107064024dSMarc-André Lureau const char *new_state = mem_blk->online ? "online" : "offline"; 2511bd240fcaSzhanghailiang 2512bd240fcaSzhanghailiang ga_write_sysfs_file(dirfd, "state", new_state, strlen(new_state), 2513bd240fcaSzhanghailiang &local_err); 2514bd240fcaSzhanghailiang if (local_err) { 2515bd240fcaSzhanghailiang error_free(local_err); 2516bd240fcaSzhanghailiang result->response = 2517bd240fcaSzhanghailiang GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_FAILED; 2518bd240fcaSzhanghailiang goto out2; 2519bd240fcaSzhanghailiang } 2520bd240fcaSzhanghailiang 2521bd240fcaSzhanghailiang result->response = GUEST_MEMORY_BLOCK_RESPONSE_TYPE_SUCCESS; 2522bd240fcaSzhanghailiang result->has_error_code = false; 2523bd240fcaSzhanghailiang } /* otherwise pretend successful re-(on|off)-lining */ 2524bd240fcaSzhanghailiang } 2525bd240fcaSzhanghailiang g_free(status); 2526bd240fcaSzhanghailiang close(dirfd); 2527bd240fcaSzhanghailiang return; 2528bd240fcaSzhanghailiang 2529bd240fcaSzhanghailiang out2: 2530bd240fcaSzhanghailiang g_free(status); 2531bd240fcaSzhanghailiang close(dirfd); 2532bd240fcaSzhanghailiang out1: 2533bd240fcaSzhanghailiang if (!sys2memblk) { 2534bd240fcaSzhanghailiang result->has_error_code = true; 2535bd240fcaSzhanghailiang result->error_code = errno; 2536bd240fcaSzhanghailiang } 2537bd240fcaSzhanghailiang } 2538bd240fcaSzhanghailiang 2539a065aaa9Szhanghailiang GuestMemoryBlockList *qmp_guest_get_memory_blocks(Error **errp) 2540a065aaa9Szhanghailiang { 2541bd240fcaSzhanghailiang GuestMemoryBlockList *head, **link; 2542bd240fcaSzhanghailiang Error *local_err = NULL; 2543bd240fcaSzhanghailiang struct dirent *de; 2544bd240fcaSzhanghailiang DIR *dp; 2545bd240fcaSzhanghailiang 2546bd240fcaSzhanghailiang head = NULL; 2547bd240fcaSzhanghailiang link = &head; 2548bd240fcaSzhanghailiang 2549bd240fcaSzhanghailiang dp = opendir("/sys/devices/system/memory/"); 2550bd240fcaSzhanghailiang if (!dp) { 2551f693fe6eSMichael Roth /* it's ok if this happens to be a system that doesn't expose 2552f693fe6eSMichael Roth * memory blocks via sysfs, but otherwise we should report 2553f693fe6eSMichael Roth * an error 2554f693fe6eSMichael Roth */ 2555f693fe6eSMichael Roth if (errno != ENOENT) { 2556bd240fcaSzhanghailiang error_setg_errno(errp, errno, "Can't open directory" 25579af9e0feSMarkus Armbruster "\"/sys/devices/system/memory/\""); 2558f693fe6eSMichael Roth } 2559bd240fcaSzhanghailiang return NULL; 2560bd240fcaSzhanghailiang } 2561bd240fcaSzhanghailiang 2562bd240fcaSzhanghailiang /* Note: the phys_index of memory block may be discontinuous, 2563bd240fcaSzhanghailiang * this is because a memblk is the unit of the Sparse Memory design, which 2564bd240fcaSzhanghailiang * allows discontinuous memory ranges (ex. NUMA), so here we should 2565bd240fcaSzhanghailiang * traverse the memory block directory. 2566bd240fcaSzhanghailiang */ 2567bd240fcaSzhanghailiang while ((de = readdir(dp)) != NULL) { 2568bd240fcaSzhanghailiang GuestMemoryBlock *mem_blk; 2569bd240fcaSzhanghailiang GuestMemoryBlockList *entry; 2570bd240fcaSzhanghailiang 2571bd240fcaSzhanghailiang if ((strncmp(de->d_name, "memory", 6) != 0) || 2572bd240fcaSzhanghailiang !(de->d_type & DT_DIR)) { 2573bd240fcaSzhanghailiang continue; 2574bd240fcaSzhanghailiang } 2575bd240fcaSzhanghailiang 2576bd240fcaSzhanghailiang mem_blk = g_malloc0(sizeof *mem_blk); 2577bd240fcaSzhanghailiang /* The d_name is "memoryXXX", phys_index is block id, same as XXX */ 2578bd240fcaSzhanghailiang mem_blk->phys_index = strtoul(&de->d_name[6], NULL, 10); 2579bd240fcaSzhanghailiang mem_blk->has_can_offline = true; /* lolspeak ftw */ 2580bd240fcaSzhanghailiang transfer_memory_block(mem_blk, true, NULL, &local_err); 25814155c998SMarkus Armbruster if (local_err) { 25824155c998SMarkus Armbruster break; 25834155c998SMarkus Armbruster } 2584bd240fcaSzhanghailiang 2585bd240fcaSzhanghailiang entry = g_malloc0(sizeof *entry); 2586bd240fcaSzhanghailiang entry->value = mem_blk; 2587bd240fcaSzhanghailiang 2588bd240fcaSzhanghailiang *link = entry; 2589bd240fcaSzhanghailiang link = &entry->next; 2590bd240fcaSzhanghailiang } 2591bd240fcaSzhanghailiang 2592bd240fcaSzhanghailiang closedir(dp); 2593bd240fcaSzhanghailiang if (local_err == NULL) { 2594bd240fcaSzhanghailiang /* there's no guest with zero memory blocks */ 2595bd240fcaSzhanghailiang if (head == NULL) { 2596bd240fcaSzhanghailiang error_setg(errp, "guest reported zero memory blocks!"); 2597bd240fcaSzhanghailiang } 2598bd240fcaSzhanghailiang return head; 2599bd240fcaSzhanghailiang } 2600bd240fcaSzhanghailiang 2601bd240fcaSzhanghailiang qapi_free_GuestMemoryBlockList(head); 2602bd240fcaSzhanghailiang error_propagate(errp, local_err); 2603a065aaa9Szhanghailiang return NULL; 2604a065aaa9Szhanghailiang } 2605a065aaa9Szhanghailiang 2606a065aaa9Szhanghailiang GuestMemoryBlockResponseList * 2607a065aaa9Szhanghailiang qmp_guest_set_memory_blocks(GuestMemoryBlockList *mem_blks, Error **errp) 2608a065aaa9Szhanghailiang { 260932ca7927Szhanghailiang GuestMemoryBlockResponseList *head, **link; 261032ca7927Szhanghailiang Error *local_err = NULL; 261132ca7927Szhanghailiang 261232ca7927Szhanghailiang head = NULL; 261332ca7927Szhanghailiang link = &head; 261432ca7927Szhanghailiang 261532ca7927Szhanghailiang while (mem_blks != NULL) { 261632ca7927Szhanghailiang GuestMemoryBlockResponse *result; 261732ca7927Szhanghailiang GuestMemoryBlockResponseList *entry; 261832ca7927Szhanghailiang GuestMemoryBlock *current_mem_blk = mem_blks->value; 261932ca7927Szhanghailiang 262032ca7927Szhanghailiang result = g_malloc0(sizeof(*result)); 262132ca7927Szhanghailiang result->phys_index = current_mem_blk->phys_index; 262232ca7927Szhanghailiang transfer_memory_block(current_mem_blk, false, result, &local_err); 262332ca7927Szhanghailiang if (local_err) { /* should never happen */ 262432ca7927Szhanghailiang goto err; 262532ca7927Szhanghailiang } 262632ca7927Szhanghailiang entry = g_malloc0(sizeof *entry); 262732ca7927Szhanghailiang entry->value = result; 262832ca7927Szhanghailiang 262932ca7927Szhanghailiang *link = entry; 263032ca7927Szhanghailiang link = &entry->next; 263132ca7927Szhanghailiang mem_blks = mem_blks->next; 263232ca7927Szhanghailiang } 263332ca7927Szhanghailiang 263432ca7927Szhanghailiang return head; 263532ca7927Szhanghailiang err: 263632ca7927Szhanghailiang qapi_free_GuestMemoryBlockResponseList(head); 263732ca7927Szhanghailiang error_propagate(errp, local_err); 2638a065aaa9Szhanghailiang return NULL; 2639a065aaa9Szhanghailiang } 2640a065aaa9Szhanghailiang 2641a065aaa9Szhanghailiang GuestMemoryBlockInfo *qmp_guest_get_memory_block_info(Error **errp) 2642a065aaa9Szhanghailiang { 2643ef82b60bSzhanghailiang Error *local_err = NULL; 2644ef82b60bSzhanghailiang char *dirpath; 2645ef82b60bSzhanghailiang int dirfd; 2646ef82b60bSzhanghailiang char *buf; 2647ef82b60bSzhanghailiang GuestMemoryBlockInfo *info; 2648ef82b60bSzhanghailiang 2649ef82b60bSzhanghailiang dirpath = g_strdup_printf("/sys/devices/system/memory/"); 2650ef82b60bSzhanghailiang dirfd = open(dirpath, O_RDONLY | O_DIRECTORY); 2651ef82b60bSzhanghailiang if (dirfd == -1) { 2652ef82b60bSzhanghailiang error_setg_errno(errp, errno, "open(\"%s\")", dirpath); 2653ef82b60bSzhanghailiang g_free(dirpath); 2654a065aaa9Szhanghailiang return NULL; 2655a065aaa9Szhanghailiang } 2656ef82b60bSzhanghailiang g_free(dirpath); 2657ef82b60bSzhanghailiang 2658ef82b60bSzhanghailiang buf = g_malloc0(20); 2659ef82b60bSzhanghailiang ga_read_sysfs_file(dirfd, "block_size_bytes", buf, 20, &local_err); 26608ce1ee46SShannon Zhao close(dirfd); 2661ef82b60bSzhanghailiang if (local_err) { 2662ef82b60bSzhanghailiang g_free(buf); 2663ef82b60bSzhanghailiang error_propagate(errp, local_err); 2664ef82b60bSzhanghailiang return NULL; 2665ef82b60bSzhanghailiang } 2666ef82b60bSzhanghailiang 2667ef82b60bSzhanghailiang info = g_new0(GuestMemoryBlockInfo, 1); 2668ef82b60bSzhanghailiang info->size = strtol(buf, NULL, 16); /* the unit is bytes */ 2669ef82b60bSzhanghailiang 2670ef82b60bSzhanghailiang g_free(buf); 2671ef82b60bSzhanghailiang 2672ef82b60bSzhanghailiang return info; 2673ef82b60bSzhanghailiang } 2674a065aaa9Szhanghailiang 2675e72c3f2eSMichael Roth #else /* defined(__linux__) */ 2676e72c3f2eSMichael Roth 267777dbc81bSMarkus Armbruster void qmp_guest_suspend_disk(Error **errp) 2678e72c3f2eSMichael Roth { 2679c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2680e72c3f2eSMichael Roth } 2681e72c3f2eSMichael Roth 268277dbc81bSMarkus Armbruster void qmp_guest_suspend_ram(Error **errp) 2683e72c3f2eSMichael Roth { 2684c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2685e72c3f2eSMichael Roth } 2686e72c3f2eSMichael Roth 268777dbc81bSMarkus Armbruster void qmp_guest_suspend_hybrid(Error **errp) 2688e72c3f2eSMichael Roth { 2689c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2690e72c3f2eSMichael Roth } 2691e72c3f2eSMichael Roth 2692e72c3f2eSMichael Roth GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp) 2693e72c3f2eSMichael Roth { 2694c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2695e72c3f2eSMichael Roth return NULL; 2696e72c3f2eSMichael Roth } 2697e72c3f2eSMichael Roth 2698d2baff62SLaszlo Ersek GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp) 2699d2baff62SLaszlo Ersek { 2700c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2701d2baff62SLaszlo Ersek return NULL; 2702d2baff62SLaszlo Ersek } 2703d2baff62SLaszlo Ersek 2704cbb65fc2SLaszlo Ersek int64_t qmp_guest_set_vcpus(GuestLogicalProcessorList *vcpus, Error **errp) 2705cbb65fc2SLaszlo Ersek { 2706c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2707cbb65fc2SLaszlo Ersek return -1; 2708cbb65fc2SLaszlo Ersek } 2709cbb65fc2SLaszlo Ersek 2710215a2771SDaniel P. Berrange void qmp_guest_set_user_password(const char *username, 2711215a2771SDaniel P. Berrange const char *password, 2712215a2771SDaniel P. Berrange bool crypted, 2713215a2771SDaniel P. Berrange Error **errp) 2714215a2771SDaniel P. Berrange { 2715c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2716215a2771SDaniel P. Berrange } 2717215a2771SDaniel P. Berrange 2718a065aaa9Szhanghailiang GuestMemoryBlockList *qmp_guest_get_memory_blocks(Error **errp) 2719a065aaa9Szhanghailiang { 2720c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2721a065aaa9Szhanghailiang return NULL; 2722a065aaa9Szhanghailiang } 2723a065aaa9Szhanghailiang 2724a065aaa9Szhanghailiang GuestMemoryBlockResponseList * 2725a065aaa9Szhanghailiang qmp_guest_set_memory_blocks(GuestMemoryBlockList *mem_blks, Error **errp) 2726a065aaa9Szhanghailiang { 2727c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2728a065aaa9Szhanghailiang return NULL; 2729a065aaa9Szhanghailiang } 2730a065aaa9Szhanghailiang 2731a065aaa9Szhanghailiang GuestMemoryBlockInfo *qmp_guest_get_memory_block_info(Error **errp) 2732a065aaa9Szhanghailiang { 2733c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2734a065aaa9Szhanghailiang return NULL; 2735a065aaa9Szhanghailiang } 2736a065aaa9Szhanghailiang 2737e72c3f2eSMichael Roth #endif 2738e72c3f2eSMichael Roth 2739d35d4cb5SMichael Roth #if !defined(CONFIG_FSFREEZE) 2740d35d4cb5SMichael Roth 274146d4c572STomoki Sekiyama GuestFilesystemInfoList *qmp_guest_get_fsinfo(Error **errp) 274246d4c572STomoki Sekiyama { 2743c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 274446d4c572STomoki Sekiyama return NULL; 274546d4c572STomoki Sekiyama } 274646d4c572STomoki Sekiyama 274777dbc81bSMarkus Armbruster GuestFsfreezeStatus qmp_guest_fsfreeze_status(Error **errp) 2748d35d4cb5SMichael Roth { 2749c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2750d35d4cb5SMichael Roth 2751d35d4cb5SMichael Roth return 0; 2752d35d4cb5SMichael Roth } 2753d35d4cb5SMichael Roth 275477dbc81bSMarkus Armbruster int64_t qmp_guest_fsfreeze_freeze(Error **errp) 2755d35d4cb5SMichael Roth { 2756c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2757d35d4cb5SMichael Roth 2758d35d4cb5SMichael Roth return 0; 2759d35d4cb5SMichael Roth } 2760d35d4cb5SMichael Roth 2761e99bce20STomoki Sekiyama int64_t qmp_guest_fsfreeze_freeze_list(bool has_mountpoints, 2762e99bce20STomoki Sekiyama strList *mountpoints, 2763e99bce20STomoki Sekiyama Error **errp) 2764e99bce20STomoki Sekiyama { 2765c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2766e99bce20STomoki Sekiyama 2767e99bce20STomoki Sekiyama return 0; 2768e99bce20STomoki Sekiyama } 2769e99bce20STomoki Sekiyama 277077dbc81bSMarkus Armbruster int64_t qmp_guest_fsfreeze_thaw(Error **errp) 2771d35d4cb5SMichael Roth { 2772c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2773d35d4cb5SMichael Roth 2774d35d4cb5SMichael Roth return 0; 2775d35d4cb5SMichael Roth } 2776eab5fd59SPaolo Bonzini #endif /* CONFIG_FSFREEZE */ 2777d35d4cb5SMichael Roth 2778eab5fd59SPaolo Bonzini #if !defined(CONFIG_FSTRIM) 2779e82855d9SJustin Ossevoort GuestFilesystemTrimResponse * 2780e82855d9SJustin Ossevoort qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **errp) 2781eab5fd59SPaolo Bonzini { 2782c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2783e82855d9SJustin Ossevoort return NULL; 2784eab5fd59SPaolo Bonzini } 2785d35d4cb5SMichael Roth #endif 2786d35d4cb5SMichael Roth 27871281c08aSTomoki Sekiyama /* add unsupported commands to the blacklist */ 27881281c08aSTomoki Sekiyama GList *ga_command_blacklist_init(GList *blacklist) 27891281c08aSTomoki Sekiyama { 27901281c08aSTomoki Sekiyama #if !defined(__linux__) 27911281c08aSTomoki Sekiyama { 27921281c08aSTomoki Sekiyama const char *list[] = { 27931281c08aSTomoki Sekiyama "guest-suspend-disk", "guest-suspend-ram", 27941281c08aSTomoki Sekiyama "guest-suspend-hybrid", "guest-network-get-interfaces", 27950dd38a03Szhanghailiang "guest-get-vcpus", "guest-set-vcpus", 27960dd38a03Szhanghailiang "guest-get-memory-blocks", "guest-set-memory-blocks", 279728d8dd35SBasil Salman "guest-get-memory-block-size", "guest-get-memory-block-info", 279828d8dd35SBasil Salman NULL}; 27991281c08aSTomoki Sekiyama char **p = (char **)list; 28001281c08aSTomoki Sekiyama 28011281c08aSTomoki Sekiyama while (*p) { 28024bca81ceSMarc-André Lureau blacklist = g_list_append(blacklist, g_strdup(*p++)); 28031281c08aSTomoki Sekiyama } 28041281c08aSTomoki Sekiyama } 28051281c08aSTomoki Sekiyama #endif 28061281c08aSTomoki Sekiyama 28071281c08aSTomoki Sekiyama #if !defined(CONFIG_FSFREEZE) 28081281c08aSTomoki Sekiyama { 28091281c08aSTomoki Sekiyama const char *list[] = { 28101281c08aSTomoki Sekiyama "guest-get-fsinfo", "guest-fsfreeze-status", 28111281c08aSTomoki Sekiyama "guest-fsfreeze-freeze", "guest-fsfreeze-freeze-list", 28121281c08aSTomoki Sekiyama "guest-fsfreeze-thaw", "guest-get-fsinfo", NULL}; 28131281c08aSTomoki Sekiyama char **p = (char **)list; 28141281c08aSTomoki Sekiyama 28151281c08aSTomoki Sekiyama while (*p) { 28164bca81ceSMarc-André Lureau blacklist = g_list_append(blacklist, g_strdup(*p++)); 28171281c08aSTomoki Sekiyama } 28181281c08aSTomoki Sekiyama } 28191281c08aSTomoki Sekiyama #endif 28201281c08aSTomoki Sekiyama 28211281c08aSTomoki Sekiyama #if !defined(CONFIG_FSTRIM) 28224bca81ceSMarc-André Lureau blacklist = g_list_append(blacklist, g_strdup("guest-fstrim")); 28231281c08aSTomoki Sekiyama #endif 28241281c08aSTomoki Sekiyama 28251281c08aSTomoki Sekiyama return blacklist; 28261281c08aSTomoki Sekiyama } 28271281c08aSTomoki Sekiyama 2828c216e5adSMichael Roth /* register init/cleanup routines for stateful command groups */ 2829c216e5adSMichael Roth void ga_command_state_init(GAState *s, GACommandState *cs) 2830c216e5adSMichael Roth { 2831c216e5adSMichael Roth #if defined(CONFIG_FSFREEZE) 2832f22d85e9SMichael Roth ga_command_state_add(cs, NULL, guest_fsfreeze_cleanup); 2833c216e5adSMichael Roth #endif 2834c216e5adSMichael Roth } 2835161a56a9SVinzenz Feenstra 2836e674605fSTomáš Golembiovský #ifdef HAVE_UTMPX 2837e674605fSTomáš Golembiovský 2838161a56a9SVinzenz Feenstra #define QGA_MICRO_SECOND_TO_SECOND 1000000 2839161a56a9SVinzenz Feenstra 2840161a56a9SVinzenz Feenstra static double ga_get_login_time(struct utmpx *user_info) 2841161a56a9SVinzenz Feenstra { 2842161a56a9SVinzenz Feenstra double seconds = (double)user_info->ut_tv.tv_sec; 2843161a56a9SVinzenz Feenstra double useconds = (double)user_info->ut_tv.tv_usec; 2844161a56a9SVinzenz Feenstra useconds /= QGA_MICRO_SECOND_TO_SECOND; 2845161a56a9SVinzenz Feenstra return seconds + useconds; 2846161a56a9SVinzenz Feenstra } 2847161a56a9SVinzenz Feenstra 2848b90abbacSVladimir Sementsov-Ogievskiy GuestUserList *qmp_guest_get_users(Error **errp) 2849161a56a9SVinzenz Feenstra { 2850161a56a9SVinzenz Feenstra GHashTable *cache = NULL; 2851161a56a9SVinzenz Feenstra GuestUserList *head = NULL, *cur_item = NULL; 2852161a56a9SVinzenz Feenstra struct utmpx *user_info = NULL; 2853161a56a9SVinzenz Feenstra gpointer value = NULL; 2854161a56a9SVinzenz Feenstra GuestUser *user = NULL; 2855161a56a9SVinzenz Feenstra GuestUserList *item = NULL; 2856161a56a9SVinzenz Feenstra double login_time = 0; 2857161a56a9SVinzenz Feenstra 2858161a56a9SVinzenz Feenstra cache = g_hash_table_new(g_str_hash, g_str_equal); 2859161a56a9SVinzenz Feenstra setutxent(); 2860161a56a9SVinzenz Feenstra 2861161a56a9SVinzenz Feenstra for (;;) { 2862161a56a9SVinzenz Feenstra user_info = getutxent(); 2863161a56a9SVinzenz Feenstra if (user_info == NULL) { 2864161a56a9SVinzenz Feenstra break; 2865161a56a9SVinzenz Feenstra } else if (user_info->ut_type != USER_PROCESS) { 2866161a56a9SVinzenz Feenstra continue; 2867161a56a9SVinzenz Feenstra } else if (g_hash_table_contains(cache, user_info->ut_user)) { 2868161a56a9SVinzenz Feenstra value = g_hash_table_lookup(cache, user_info->ut_user); 2869161a56a9SVinzenz Feenstra user = (GuestUser *)value; 2870161a56a9SVinzenz Feenstra login_time = ga_get_login_time(user_info); 2871161a56a9SVinzenz Feenstra /* We're ensuring the earliest login time to be sent */ 2872161a56a9SVinzenz Feenstra if (login_time < user->login_time) { 2873161a56a9SVinzenz Feenstra user->login_time = login_time; 2874161a56a9SVinzenz Feenstra } 2875161a56a9SVinzenz Feenstra continue; 2876161a56a9SVinzenz Feenstra } 2877161a56a9SVinzenz Feenstra 2878161a56a9SVinzenz Feenstra item = g_new0(GuestUserList, 1); 2879161a56a9SVinzenz Feenstra item->value = g_new0(GuestUser, 1); 2880161a56a9SVinzenz Feenstra item->value->user = g_strdup(user_info->ut_user); 2881161a56a9SVinzenz Feenstra item->value->login_time = ga_get_login_time(user_info); 2882161a56a9SVinzenz Feenstra 2883161a56a9SVinzenz Feenstra g_hash_table_insert(cache, item->value->user, item->value); 2884161a56a9SVinzenz Feenstra 2885161a56a9SVinzenz Feenstra if (!cur_item) { 2886161a56a9SVinzenz Feenstra head = cur_item = item; 2887161a56a9SVinzenz Feenstra } else { 2888161a56a9SVinzenz Feenstra cur_item->next = item; 2889161a56a9SVinzenz Feenstra cur_item = item; 2890161a56a9SVinzenz Feenstra } 2891161a56a9SVinzenz Feenstra } 2892161a56a9SVinzenz Feenstra endutxent(); 2893161a56a9SVinzenz Feenstra g_hash_table_destroy(cache); 2894161a56a9SVinzenz Feenstra return head; 2895161a56a9SVinzenz Feenstra } 2896e674605fSTomáš Golembiovský 2897e674605fSTomáš Golembiovský #else 2898e674605fSTomáš Golembiovský 2899e674605fSTomáš Golembiovský GuestUserList *qmp_guest_get_users(Error **errp) 2900e674605fSTomáš Golembiovský { 2901e674605fSTomáš Golembiovský error_setg(errp, QERR_UNSUPPORTED); 2902e674605fSTomáš Golembiovský return NULL; 2903e674605fSTomáš Golembiovský } 2904e674605fSTomáš Golembiovský 2905e674605fSTomáš Golembiovský #endif 29069848f797STomáš Golembiovský 29079848f797STomáš Golembiovský /* Replace escaped special characters with theire real values. The replacement 29089848f797STomáš Golembiovský * is done in place -- returned value is in the original string. 29099848f797STomáš Golembiovský */ 29109848f797STomáš Golembiovský static void ga_osrelease_replace_special(gchar *value) 29119848f797STomáš Golembiovský { 29129848f797STomáš Golembiovský gchar *p, *p2, quote; 29139848f797STomáš Golembiovský 29149848f797STomáš Golembiovský /* Trim the string at first space or semicolon if it is not enclosed in 29159848f797STomáš Golembiovský * single or double quotes. */ 29169848f797STomáš Golembiovský if ((value[0] != '"') || (value[0] == '\'')) { 29179848f797STomáš Golembiovský p = strchr(value, ' '); 29189848f797STomáš Golembiovský if (p != NULL) { 29199848f797STomáš Golembiovský *p = 0; 29209848f797STomáš Golembiovský } 29219848f797STomáš Golembiovský p = strchr(value, ';'); 29229848f797STomáš Golembiovský if (p != NULL) { 29239848f797STomáš Golembiovský *p = 0; 29249848f797STomáš Golembiovský } 29259848f797STomáš Golembiovský return; 29269848f797STomáš Golembiovský } 29279848f797STomáš Golembiovský 29289848f797STomáš Golembiovský quote = value[0]; 29299848f797STomáš Golembiovský p2 = value; 29309848f797STomáš Golembiovský p = value + 1; 29319848f797STomáš Golembiovský while (*p != 0) { 29329848f797STomáš Golembiovský if (*p == '\\') { 29339848f797STomáš Golembiovský p++; 29349848f797STomáš Golembiovský switch (*p) { 29359848f797STomáš Golembiovský case '$': 29369848f797STomáš Golembiovský case '\'': 29379848f797STomáš Golembiovský case '"': 29389848f797STomáš Golembiovský case '\\': 29399848f797STomáš Golembiovský case '`': 29409848f797STomáš Golembiovský break; 29419848f797STomáš Golembiovský default: 29429848f797STomáš Golembiovský /* Keep literal backslash followed by whatever is there */ 29439848f797STomáš Golembiovský p--; 29449848f797STomáš Golembiovský break; 29459848f797STomáš Golembiovský } 29469848f797STomáš Golembiovský } else if (*p == quote) { 29479848f797STomáš Golembiovský *p2 = 0; 29489848f797STomáš Golembiovský break; 29499848f797STomáš Golembiovský } 29509848f797STomáš Golembiovský *(p2++) = *(p++); 29519848f797STomáš Golembiovský } 29529848f797STomáš Golembiovský } 29539848f797STomáš Golembiovský 29549848f797STomáš Golembiovský static GKeyFile *ga_parse_osrelease(const char *fname) 29559848f797STomáš Golembiovský { 29569848f797STomáš Golembiovský gchar *content = NULL; 29579848f797STomáš Golembiovský gchar *content2 = NULL; 29589848f797STomáš Golembiovský GError *err = NULL; 29599848f797STomáš Golembiovský GKeyFile *keys = g_key_file_new(); 29609848f797STomáš Golembiovský const char *group = "[os-release]\n"; 29619848f797STomáš Golembiovský 29629848f797STomáš Golembiovský if (!g_file_get_contents(fname, &content, NULL, &err)) { 29639848f797STomáš Golembiovský slog("failed to read '%s', error: %s", fname, err->message); 29649848f797STomáš Golembiovský goto fail; 29659848f797STomáš Golembiovský } 29669848f797STomáš Golembiovský 29679848f797STomáš Golembiovský if (!g_utf8_validate(content, -1, NULL)) { 29689848f797STomáš Golembiovský slog("file is not utf-8 encoded: %s", fname); 29699848f797STomáš Golembiovský goto fail; 29709848f797STomáš Golembiovský } 29719848f797STomáš Golembiovský content2 = g_strdup_printf("%s%s", group, content); 29729848f797STomáš Golembiovský 29739848f797STomáš Golembiovský if (!g_key_file_load_from_data(keys, content2, -1, G_KEY_FILE_NONE, 29749848f797STomáš Golembiovský &err)) { 29759848f797STomáš Golembiovský slog("failed to parse file '%s', error: %s", fname, err->message); 29769848f797STomáš Golembiovský goto fail; 29779848f797STomáš Golembiovský } 29789848f797STomáš Golembiovský 29799848f797STomáš Golembiovský g_free(content); 29809848f797STomáš Golembiovský g_free(content2); 29819848f797STomáš Golembiovský return keys; 29829848f797STomáš Golembiovský 29839848f797STomáš Golembiovský fail: 29849848f797STomáš Golembiovský g_error_free(err); 29859848f797STomáš Golembiovský g_free(content); 29869848f797STomáš Golembiovský g_free(content2); 29879848f797STomáš Golembiovský g_key_file_free(keys); 29889848f797STomáš Golembiovský return NULL; 29899848f797STomáš Golembiovský } 29909848f797STomáš Golembiovský 29919848f797STomáš Golembiovský GuestOSInfo *qmp_guest_get_osinfo(Error **errp) 29929848f797STomáš Golembiovský { 29939848f797STomáš Golembiovský GuestOSInfo *info = NULL; 29949848f797STomáš Golembiovský struct utsname kinfo; 2995339ca68bSTomáš Golembiovský GKeyFile *osrelease = NULL; 2996339ca68bSTomáš Golembiovský const char *qga_os_release = g_getenv("QGA_OS_RELEASE"); 29979848f797STomáš Golembiovský 29989848f797STomáš Golembiovský info = g_new0(GuestOSInfo, 1); 29999848f797STomáš Golembiovský 30009848f797STomáš Golembiovský if (uname(&kinfo) != 0) { 30019848f797STomáš Golembiovský error_setg_errno(errp, errno, "uname failed"); 30029848f797STomáš Golembiovský } else { 30039848f797STomáš Golembiovský info->has_kernel_version = true; 30049848f797STomáš Golembiovský info->kernel_version = g_strdup(kinfo.version); 30059848f797STomáš Golembiovský info->has_kernel_release = true; 30069848f797STomáš Golembiovský info->kernel_release = g_strdup(kinfo.release); 30079848f797STomáš Golembiovský info->has_machine = true; 30089848f797STomáš Golembiovský info->machine = g_strdup(kinfo.machine); 30099848f797STomáš Golembiovský } 30109848f797STomáš Golembiovský 3011339ca68bSTomáš Golembiovský if (qga_os_release != NULL) { 3012339ca68bSTomáš Golembiovský osrelease = ga_parse_osrelease(qga_os_release); 3013339ca68bSTomáš Golembiovský } else { 30149848f797STomáš Golembiovský osrelease = ga_parse_osrelease("/etc/os-release"); 30159848f797STomáš Golembiovský if (osrelease == NULL) { 30169848f797STomáš Golembiovský osrelease = ga_parse_osrelease("/usr/lib/os-release"); 30179848f797STomáš Golembiovský } 3018339ca68bSTomáš Golembiovský } 30199848f797STomáš Golembiovský 30209848f797STomáš Golembiovský if (osrelease != NULL) { 30219848f797STomáš Golembiovský char *value; 30229848f797STomáš Golembiovský 30239848f797STomáš Golembiovský #define GET_FIELD(field, osfield) do { \ 30249848f797STomáš Golembiovský value = g_key_file_get_value(osrelease, "os-release", osfield, NULL); \ 30259848f797STomáš Golembiovský if (value != NULL) { \ 30269848f797STomáš Golembiovský ga_osrelease_replace_special(value); \ 30279848f797STomáš Golembiovský info->has_ ## field = true; \ 30289848f797STomáš Golembiovský info->field = value; \ 30299848f797STomáš Golembiovský } \ 30309848f797STomáš Golembiovský } while (0) 30319848f797STomáš Golembiovský GET_FIELD(id, "ID"); 30329848f797STomáš Golembiovský GET_FIELD(name, "NAME"); 30339848f797STomáš Golembiovský GET_FIELD(pretty_name, "PRETTY_NAME"); 30349848f797STomáš Golembiovský GET_FIELD(version, "VERSION"); 30359848f797STomáš Golembiovský GET_FIELD(version_id, "VERSION_ID"); 30369848f797STomáš Golembiovský GET_FIELD(variant, "VARIANT"); 30379848f797STomáš Golembiovský GET_FIELD(variant_id, "VARIANT_ID"); 30389848f797STomáš Golembiovský #undef GET_FIELD 30399848f797STomáš Golembiovský 30409848f797STomáš Golembiovský g_key_file_free(osrelease); 30419848f797STomáš Golembiovský } 30429848f797STomáš Golembiovský 30439848f797STomáš Golembiovský return info; 30449848f797STomáš Golembiovský } 3045