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> 19c216e5adSMichael Roth #include "qga/guest-agent-core.h" 20eb815e24SMarkus Armbruster #include "qga-qapi-commands.h" 21e688df6bSMarkus Armbruster #include "qapi/error.h" 227b1b5d19SPaolo Bonzini #include "qapi/qmp/qerror.h" 231de7afc9SPaolo Bonzini #include "qemu/queue.h" 241de7afc9SPaolo Bonzini #include "qemu/host-utils.h" 2512505396SDenis V. Lunev #include "qemu/sockets.h" 26920639caSDaniel P. Berrange #include "qemu/base64.h" 27f348b6d1SVeronia Bahaa #include "qemu/cutils.h" 28c216e5adSMichael Roth 29e674605fSTomáš Golembiovský #ifdef HAVE_UTMPX 30e674605fSTomáš Golembiovský #include <utmpx.h> 31e674605fSTomáš Golembiovský #endif 32e674605fSTomáš Golembiovský 332c02cbf6SLuiz Capitulino #ifndef CONFIG_HAS_ENVIRON 34eecae147SAndreas Färber #ifdef __APPLE__ 35eecae147SAndreas Färber #include <crt_externs.h> 36eecae147SAndreas Färber #define environ (*_NSGetEnviron()) 37eecae147SAndreas Färber #else 382c02cbf6SLuiz Capitulino extern char **environ; 392c02cbf6SLuiz Capitulino #endif 40eecae147SAndreas Färber #endif 412c02cbf6SLuiz Capitulino 42e72c3f2eSMichael Roth #if defined(__linux__) 43e72c3f2eSMichael Roth #include <mntent.h> 44e72c3f2eSMichael Roth #include <linux/fs.h> 45e72c3f2eSMichael Roth #include <ifaddrs.h> 46e72c3f2eSMichael Roth #include <arpa/inet.h> 47e72c3f2eSMichael Roth #include <sys/socket.h> 48e72c3f2eSMichael Roth #include <net/if.h> 49e72c3f2eSMichael Roth 50eab5fd59SPaolo Bonzini #ifdef FIFREEZE 51e72c3f2eSMichael Roth #define CONFIG_FSFREEZE 52e72c3f2eSMichael Roth #endif 53eab5fd59SPaolo Bonzini #ifdef FITRIM 54eab5fd59SPaolo Bonzini #define CONFIG_FSTRIM 55eab5fd59SPaolo Bonzini #endif 56e72c3f2eSMichael Roth #endif 57e72c3f2eSMichael Roth 5877dbc81bSMarkus Armbruster static void ga_wait_child(pid_t pid, int *status, Error **errp) 59d220a6dfSLuiz Capitulino { 60d220a6dfSLuiz Capitulino pid_t rpid; 61d220a6dfSLuiz Capitulino 62d220a6dfSLuiz Capitulino *status = 0; 63d220a6dfSLuiz Capitulino 64d220a6dfSLuiz Capitulino do { 65d220a6dfSLuiz Capitulino rpid = waitpid(pid, status, 0); 66d220a6dfSLuiz Capitulino } while (rpid == -1 && errno == EINTR); 67d220a6dfSLuiz Capitulino 68d220a6dfSLuiz Capitulino if (rpid == -1) { 6977dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to wait for child (pid: %d)", 7077dbc81bSMarkus Armbruster pid); 71d220a6dfSLuiz Capitulino return; 72d220a6dfSLuiz Capitulino } 73d220a6dfSLuiz Capitulino 74d220a6dfSLuiz Capitulino g_assert(rpid == pid); 75d220a6dfSLuiz Capitulino } 76d220a6dfSLuiz Capitulino 7777dbc81bSMarkus Armbruster void qmp_guest_shutdown(bool has_mode, const char *mode, Error **errp) 78c216e5adSMichael Roth { 79c216e5adSMichael Roth const char *shutdown_flag; 80d220a6dfSLuiz Capitulino Error *local_err = NULL; 81d220a6dfSLuiz Capitulino pid_t pid; 823674838cSLuiz Capitulino int status; 83c216e5adSMichael Roth 84c216e5adSMichael Roth slog("guest-shutdown called, mode: %s", mode); 85c216e5adSMichael Roth if (!has_mode || strcmp(mode, "powerdown") == 0) { 86c216e5adSMichael Roth shutdown_flag = "-P"; 87c216e5adSMichael Roth } else if (strcmp(mode, "halt") == 0) { 88c216e5adSMichael Roth shutdown_flag = "-H"; 89c216e5adSMichael Roth } else if (strcmp(mode, "reboot") == 0) { 90c216e5adSMichael Roth shutdown_flag = "-r"; 91c216e5adSMichael Roth } else { 9277dbc81bSMarkus Armbruster error_setg(errp, 93d220a6dfSLuiz Capitulino "mode is invalid (valid values are: halt|powerdown|reboot"); 94c216e5adSMichael Roth return; 95c216e5adSMichael Roth } 96c216e5adSMichael Roth 97d5dd3498SLuiz Capitulino pid = fork(); 98d5dd3498SLuiz Capitulino if (pid == 0) { 99c216e5adSMichael Roth /* child, start the shutdown */ 100c216e5adSMichael Roth setsid(); 1013674838cSLuiz Capitulino reopen_fd_to_null(0); 1023674838cSLuiz Capitulino reopen_fd_to_null(1); 1033674838cSLuiz Capitulino reopen_fd_to_null(2); 104c216e5adSMichael Roth 105485e741cSwhitearchey execle("/sbin/shutdown", "shutdown", "-h", shutdown_flag, "+0", 1063674838cSLuiz Capitulino "hypervisor initiated shutdown", (char*)NULL, environ); 1073674838cSLuiz Capitulino _exit(EXIT_FAILURE); 108d5dd3498SLuiz Capitulino } else if (pid < 0) { 10977dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to create child process"); 110d5dd3498SLuiz Capitulino return; 111d5dd3498SLuiz Capitulino } 112d5dd3498SLuiz Capitulino 113d220a6dfSLuiz Capitulino ga_wait_child(pid, &status, &local_err); 11484d18f06SMarkus Armbruster if (local_err) { 11577dbc81bSMarkus Armbruster error_propagate(errp, local_err); 116d220a6dfSLuiz Capitulino return; 117d220a6dfSLuiz Capitulino } 118d220a6dfSLuiz Capitulino 119d220a6dfSLuiz Capitulino if (!WIFEXITED(status)) { 12077dbc81bSMarkus Armbruster error_setg(errp, "child process has terminated abnormally"); 121d220a6dfSLuiz Capitulino return; 122d220a6dfSLuiz Capitulino } 123d220a6dfSLuiz Capitulino 124d220a6dfSLuiz Capitulino if (WEXITSTATUS(status)) { 12577dbc81bSMarkus Armbruster error_setg(errp, "child process has failed to shutdown"); 126d220a6dfSLuiz Capitulino return; 127d220a6dfSLuiz Capitulino } 128d220a6dfSLuiz Capitulino 129085d8134SPeter Maydell /* succeeded */ 130c216e5adSMichael Roth } 131c216e5adSMichael Roth 1326912e6a9SLei Li int64_t qmp_guest_get_time(Error **errp) 1336912e6a9SLei Li { 1346912e6a9SLei Li int ret; 1356912e6a9SLei Li qemu_timeval tq; 1366912e6a9SLei Li 1376912e6a9SLei Li ret = qemu_gettimeofday(&tq); 1386912e6a9SLei Li if (ret < 0) { 1396912e6a9SLei Li error_setg_errno(errp, errno, "Failed to get time"); 1406912e6a9SLei Li return -1; 1416912e6a9SLei Li } 1426912e6a9SLei Li 1439be38598SEduardo Habkost return tq.tv_sec * 1000000000LL + tq.tv_usec * 1000; 1446912e6a9SLei Li } 1456912e6a9SLei Li 1462c958923SMichal Privoznik void qmp_guest_set_time(bool has_time, int64_t time_ns, Error **errp) 147a1bca57fSLei Li { 148a1bca57fSLei Li int ret; 149a1bca57fSLei Li int status; 150a1bca57fSLei Li pid_t pid; 151a1bca57fSLei Li Error *local_err = NULL; 152a1bca57fSLei Li struct timeval tv; 153a1bca57fSLei Li 1542c958923SMichal Privoznik /* If user has passed a time, validate and set it. */ 1552c958923SMichal Privoznik if (has_time) { 15600d2f370SMarc-André Lureau GDate date = { 0, }; 15700d2f370SMarc-André Lureau 158a1bca57fSLei Li /* year-2038 will overflow in case time_t is 32bit */ 159a1bca57fSLei Li if (time_ns / 1000000000 != (time_t)(time_ns / 1000000000)) { 160a1bca57fSLei Li error_setg(errp, "Time %" PRId64 " is too large", time_ns); 161a1bca57fSLei Li return; 162a1bca57fSLei Li } 163a1bca57fSLei Li 164a1bca57fSLei Li tv.tv_sec = time_ns / 1000000000; 165a1bca57fSLei Li tv.tv_usec = (time_ns % 1000000000) / 1000; 16600d2f370SMarc-André Lureau g_date_set_time_t(&date, tv.tv_sec); 16700d2f370SMarc-André Lureau if (date.year < 1970 || date.year >= 2070) { 16800d2f370SMarc-André Lureau error_setg_errno(errp, errno, "Invalid time"); 16900d2f370SMarc-André Lureau return; 17000d2f370SMarc-André Lureau } 171a1bca57fSLei Li 172a1bca57fSLei Li ret = settimeofday(&tv, NULL); 173a1bca57fSLei Li if (ret < 0) { 174a1bca57fSLei Li error_setg_errno(errp, errno, "Failed to set time to guest"); 175a1bca57fSLei Li return; 176a1bca57fSLei Li } 1772c958923SMichal Privoznik } 178a1bca57fSLei Li 1792c958923SMichal Privoznik /* Now, if user has passed a time to set and the system time is set, we 1802c958923SMichal Privoznik * just need to synchronize the hardware clock. However, if no time was 1812c958923SMichal Privoznik * passed, user is requesting the opposite: set the system time from the 1821634df56SAmos Kong * hardware clock (RTC). */ 183a1bca57fSLei Li pid = fork(); 184a1bca57fSLei Li if (pid == 0) { 185a1bca57fSLei Li setsid(); 186a1bca57fSLei Li reopen_fd_to_null(0); 187a1bca57fSLei Li reopen_fd_to_null(1); 188a1bca57fSLei Li reopen_fd_to_null(2); 189a1bca57fSLei Li 1902c958923SMichal Privoznik /* Use '/sbin/hwclock -w' to set RTC from the system time, 1912c958923SMichal Privoznik * or '/sbin/hwclock -s' to set the system time from RTC. */ 1922c958923SMichal Privoznik execle("/sbin/hwclock", "hwclock", has_time ? "-w" : "-s", 1932c958923SMichal Privoznik NULL, environ); 194a1bca57fSLei Li _exit(EXIT_FAILURE); 195a1bca57fSLei Li } else if (pid < 0) { 196a1bca57fSLei Li error_setg_errno(errp, errno, "failed to create child process"); 197a1bca57fSLei Li return; 198a1bca57fSLei Li } 199a1bca57fSLei Li 200a1bca57fSLei Li ga_wait_child(pid, &status, &local_err); 20184d18f06SMarkus Armbruster if (local_err) { 202a1bca57fSLei Li error_propagate(errp, local_err); 203a1bca57fSLei Li return; 204a1bca57fSLei Li } 205a1bca57fSLei Li 206a1bca57fSLei Li if (!WIFEXITED(status)) { 207a1bca57fSLei Li error_setg(errp, "child process has terminated abnormally"); 208a1bca57fSLei Li return; 209a1bca57fSLei Li } 210a1bca57fSLei Li 211a1bca57fSLei Li if (WEXITSTATUS(status)) { 212a1bca57fSLei Li error_setg(errp, "hwclock failed to set hardware clock to system time"); 213a1bca57fSLei Li return; 214a1bca57fSLei Li } 215a1bca57fSLei Li } 216a1bca57fSLei Li 217895b00f6SMarc-André Lureau typedef enum { 218895b00f6SMarc-André Lureau RW_STATE_NEW, 219895b00f6SMarc-André Lureau RW_STATE_READING, 220895b00f6SMarc-André Lureau RW_STATE_WRITING, 221895b00f6SMarc-André Lureau } RwState; 222895b00f6SMarc-André Lureau 223c216e5adSMichael Roth typedef struct GuestFileHandle { 224c216e5adSMichael Roth uint64_t id; 225c216e5adSMichael Roth FILE *fh; 226895b00f6SMarc-André Lureau RwState state; 227c216e5adSMichael Roth QTAILQ_ENTRY(GuestFileHandle) next; 228c216e5adSMichael Roth } GuestFileHandle; 229c216e5adSMichael Roth 230c216e5adSMichael Roth static struct { 231c216e5adSMichael Roth QTAILQ_HEAD(, GuestFileHandle) filehandles; 232b4fe97c8SDenis V. Lunev } guest_file_state = { 233b4fe97c8SDenis V. Lunev .filehandles = QTAILQ_HEAD_INITIALIZER(guest_file_state.filehandles), 234b4fe97c8SDenis V. Lunev }; 235c216e5adSMichael Roth 23639097dafSMichael Roth static int64_t guest_file_handle_add(FILE *fh, Error **errp) 237c216e5adSMichael Roth { 238c216e5adSMichael Roth GuestFileHandle *gfh; 23939097dafSMichael Roth int64_t handle; 24039097dafSMichael Roth 24139097dafSMichael Roth handle = ga_get_fd_handle(ga_state, errp); 242a903f40cSMarkus Armbruster if (handle < 0) { 243a903f40cSMarkus Armbruster return -1; 24439097dafSMichael Roth } 245c216e5adSMichael Roth 246f3a06403SMarkus Armbruster gfh = g_new0(GuestFileHandle, 1); 24739097dafSMichael Roth gfh->id = handle; 248c216e5adSMichael Roth gfh->fh = fh; 249c216e5adSMichael Roth QTAILQ_INSERT_TAIL(&guest_file_state.filehandles, gfh, next); 25039097dafSMichael Roth 25139097dafSMichael Roth return handle; 252c216e5adSMichael Roth } 253c216e5adSMichael Roth 25477dbc81bSMarkus Armbruster static GuestFileHandle *guest_file_handle_find(int64_t id, Error **errp) 255c216e5adSMichael Roth { 256c216e5adSMichael Roth GuestFileHandle *gfh; 257c216e5adSMichael Roth 258c216e5adSMichael Roth QTAILQ_FOREACH(gfh, &guest_file_state.filehandles, next) 259c216e5adSMichael Roth { 260c216e5adSMichael Roth if (gfh->id == id) { 261c216e5adSMichael Roth return gfh; 262c216e5adSMichael Roth } 263c216e5adSMichael Roth } 264c216e5adSMichael Roth 26577dbc81bSMarkus Armbruster error_setg(errp, "handle '%" PRId64 "' has not been found", id); 266c216e5adSMichael Roth return NULL; 267c216e5adSMichael Roth } 268c216e5adSMichael Roth 269c689b4f1SLaszlo Ersek typedef const char * const ccpc; 270c689b4f1SLaszlo Ersek 2718fe6bbcaSLaszlo Ersek #ifndef O_BINARY 2728fe6bbcaSLaszlo Ersek #define O_BINARY 0 2738fe6bbcaSLaszlo Ersek #endif 2748fe6bbcaSLaszlo Ersek 275c689b4f1SLaszlo Ersek /* http://pubs.opengroup.org/onlinepubs/9699919799/functions/fopen.html */ 276c689b4f1SLaszlo Ersek static const struct { 277c689b4f1SLaszlo Ersek ccpc *forms; 278c689b4f1SLaszlo Ersek int oflag_base; 279c689b4f1SLaszlo Ersek } guest_file_open_modes[] = { 2808fe6bbcaSLaszlo Ersek { (ccpc[]){ "r", NULL }, O_RDONLY }, 2818fe6bbcaSLaszlo Ersek { (ccpc[]){ "rb", NULL }, O_RDONLY | O_BINARY }, 2828fe6bbcaSLaszlo Ersek { (ccpc[]){ "w", NULL }, O_WRONLY | O_CREAT | O_TRUNC }, 2838fe6bbcaSLaszlo Ersek { (ccpc[]){ "wb", NULL }, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY }, 2848fe6bbcaSLaszlo Ersek { (ccpc[]){ "a", NULL }, O_WRONLY | O_CREAT | O_APPEND }, 2858fe6bbcaSLaszlo Ersek { (ccpc[]){ "ab", NULL }, O_WRONLY | O_CREAT | O_APPEND | O_BINARY }, 2868fe6bbcaSLaszlo Ersek { (ccpc[]){ "r+", NULL }, O_RDWR }, 2878fe6bbcaSLaszlo Ersek { (ccpc[]){ "rb+", "r+b", NULL }, O_RDWR | O_BINARY }, 2888fe6bbcaSLaszlo Ersek { (ccpc[]){ "w+", NULL }, O_RDWR | O_CREAT | O_TRUNC }, 2898fe6bbcaSLaszlo Ersek { (ccpc[]){ "wb+", "w+b", NULL }, O_RDWR | O_CREAT | O_TRUNC | O_BINARY }, 2908fe6bbcaSLaszlo Ersek { (ccpc[]){ "a+", NULL }, O_RDWR | O_CREAT | O_APPEND }, 2918fe6bbcaSLaszlo Ersek { (ccpc[]){ "ab+", "a+b", NULL }, O_RDWR | O_CREAT | O_APPEND | O_BINARY } 292c689b4f1SLaszlo Ersek }; 293c689b4f1SLaszlo Ersek 294c689b4f1SLaszlo Ersek static int 29577dbc81bSMarkus Armbruster find_open_flag(const char *mode_str, Error **errp) 296c689b4f1SLaszlo Ersek { 297c689b4f1SLaszlo Ersek unsigned mode; 298c689b4f1SLaszlo Ersek 299c689b4f1SLaszlo Ersek for (mode = 0; mode < ARRAY_SIZE(guest_file_open_modes); ++mode) { 300c689b4f1SLaszlo Ersek ccpc *form; 301c689b4f1SLaszlo Ersek 302c689b4f1SLaszlo Ersek form = guest_file_open_modes[mode].forms; 303c689b4f1SLaszlo Ersek while (*form != NULL && strcmp(*form, mode_str) != 0) { 304c689b4f1SLaszlo Ersek ++form; 305c689b4f1SLaszlo Ersek } 306c689b4f1SLaszlo Ersek if (*form != NULL) { 307c689b4f1SLaszlo Ersek break; 308c689b4f1SLaszlo Ersek } 309c689b4f1SLaszlo Ersek } 310c689b4f1SLaszlo Ersek 311c689b4f1SLaszlo Ersek if (mode == ARRAY_SIZE(guest_file_open_modes)) { 31277dbc81bSMarkus Armbruster error_setg(errp, "invalid file open mode '%s'", mode_str); 313c689b4f1SLaszlo Ersek return -1; 314c689b4f1SLaszlo Ersek } 315c689b4f1SLaszlo Ersek return guest_file_open_modes[mode].oflag_base | O_NOCTTY | O_NONBLOCK; 316c689b4f1SLaszlo Ersek } 317c689b4f1SLaszlo Ersek 318c689b4f1SLaszlo Ersek #define DEFAULT_NEW_FILE_MODE (S_IRUSR | S_IWUSR | \ 319c689b4f1SLaszlo Ersek S_IRGRP | S_IWGRP | \ 320c689b4f1SLaszlo Ersek S_IROTH | S_IWOTH) 321c689b4f1SLaszlo Ersek 322c689b4f1SLaszlo Ersek static FILE * 32377dbc81bSMarkus Armbruster safe_open_or_create(const char *path, const char *mode, Error **errp) 324c689b4f1SLaszlo Ersek { 325c689b4f1SLaszlo Ersek Error *local_err = NULL; 326c689b4f1SLaszlo Ersek int oflag; 327c689b4f1SLaszlo Ersek 328c689b4f1SLaszlo Ersek oflag = find_open_flag(mode, &local_err); 329c689b4f1SLaszlo Ersek if (local_err == NULL) { 330c689b4f1SLaszlo Ersek int fd; 331c689b4f1SLaszlo Ersek 332c689b4f1SLaszlo Ersek /* If the caller wants / allows creation of a new file, we implement it 333c689b4f1SLaszlo Ersek * with a two step process: open() + (open() / fchmod()). 334c689b4f1SLaszlo Ersek * 335c689b4f1SLaszlo Ersek * First we insist on creating the file exclusively as a new file. If 336c689b4f1SLaszlo Ersek * that succeeds, we're free to set any file-mode bits on it. (The 337c689b4f1SLaszlo Ersek * motivation is that we want to set those file-mode bits independently 338c689b4f1SLaszlo Ersek * of the current umask.) 339c689b4f1SLaszlo Ersek * 340c689b4f1SLaszlo Ersek * If the exclusive creation fails because the file already exists 341c689b4f1SLaszlo Ersek * (EEXIST is not possible for any other reason), we just attempt to 342c689b4f1SLaszlo Ersek * open the file, but in this case we won't be allowed to change the 343c689b4f1SLaszlo Ersek * file-mode bits on the preexistent file. 344c689b4f1SLaszlo Ersek * 345c689b4f1SLaszlo Ersek * The pathname should never disappear between the two open()s in 346c689b4f1SLaszlo Ersek * practice. If it happens, then someone very likely tried to race us. 347c689b4f1SLaszlo Ersek * In this case just go ahead and report the ENOENT from the second 348c689b4f1SLaszlo Ersek * open() to the caller. 349c689b4f1SLaszlo Ersek * 350c689b4f1SLaszlo Ersek * If the caller wants to open a preexistent file, then the first 351c689b4f1SLaszlo Ersek * open() is decisive and its third argument is ignored, and the second 352c689b4f1SLaszlo Ersek * open() and the fchmod() are never called. 353c689b4f1SLaszlo Ersek */ 354c689b4f1SLaszlo Ersek fd = open(path, oflag | ((oflag & O_CREAT) ? O_EXCL : 0), 0); 355c689b4f1SLaszlo Ersek if (fd == -1 && errno == EEXIST) { 356c689b4f1SLaszlo Ersek oflag &= ~(unsigned)O_CREAT; 357c689b4f1SLaszlo Ersek fd = open(path, oflag); 358c689b4f1SLaszlo Ersek } 359c689b4f1SLaszlo Ersek 360c689b4f1SLaszlo Ersek if (fd == -1) { 361c689b4f1SLaszlo Ersek error_setg_errno(&local_err, errno, "failed to open file '%s' " 362c689b4f1SLaszlo Ersek "(mode: '%s')", path, mode); 363c689b4f1SLaszlo Ersek } else { 364c689b4f1SLaszlo Ersek qemu_set_cloexec(fd); 365c689b4f1SLaszlo Ersek 366c689b4f1SLaszlo Ersek if ((oflag & O_CREAT) && fchmod(fd, DEFAULT_NEW_FILE_MODE) == -1) { 367c689b4f1SLaszlo Ersek error_setg_errno(&local_err, errno, "failed to set permission " 368c689b4f1SLaszlo Ersek "0%03o on new file '%s' (mode: '%s')", 369c689b4f1SLaszlo Ersek (unsigned)DEFAULT_NEW_FILE_MODE, path, mode); 370c689b4f1SLaszlo Ersek } else { 371c689b4f1SLaszlo Ersek FILE *f; 372c689b4f1SLaszlo Ersek 373c689b4f1SLaszlo Ersek f = fdopen(fd, mode); 374c689b4f1SLaszlo Ersek if (f == NULL) { 375c689b4f1SLaszlo Ersek error_setg_errno(&local_err, errno, "failed to associate " 376c689b4f1SLaszlo Ersek "stdio stream with file descriptor %d, " 377c689b4f1SLaszlo Ersek "file '%s' (mode: '%s')", fd, path, mode); 378c689b4f1SLaszlo Ersek } else { 379c689b4f1SLaszlo Ersek return f; 380c689b4f1SLaszlo Ersek } 381c689b4f1SLaszlo Ersek } 382c689b4f1SLaszlo Ersek 383c689b4f1SLaszlo Ersek close(fd); 3842b720018SLaszlo Ersek if (oflag & O_CREAT) { 3852b720018SLaszlo Ersek unlink(path); 3862b720018SLaszlo Ersek } 387c689b4f1SLaszlo Ersek } 388c689b4f1SLaszlo Ersek } 389c689b4f1SLaszlo Ersek 39077dbc81bSMarkus Armbruster error_propagate(errp, local_err); 391c689b4f1SLaszlo Ersek return NULL; 392c689b4f1SLaszlo Ersek } 393c689b4f1SLaszlo Ersek 39477dbc81bSMarkus Armbruster int64_t qmp_guest_file_open(const char *path, bool has_mode, const char *mode, 39577dbc81bSMarkus Armbruster Error **errp) 396c216e5adSMichael Roth { 397c216e5adSMichael Roth FILE *fh; 398c689b4f1SLaszlo Ersek Error *local_err = NULL; 39985b6f6f5SSimon Zolin int64_t handle; 400c216e5adSMichael Roth 401c216e5adSMichael Roth if (!has_mode) { 402c216e5adSMichael Roth mode = "r"; 403c216e5adSMichael Roth } 404c216e5adSMichael Roth slog("guest-file-open called, filepath: %s, mode: %s", path, mode); 405c689b4f1SLaszlo Ersek fh = safe_open_or_create(path, mode, &local_err); 406c689b4f1SLaszlo Ersek if (local_err != NULL) { 40777dbc81bSMarkus Armbruster error_propagate(errp, local_err); 408c216e5adSMichael Roth return -1; 409c216e5adSMichael Roth } 410c216e5adSMichael Roth 411c216e5adSMichael Roth /* set fd non-blocking to avoid common use cases (like reading from a 412c216e5adSMichael Roth * named pipe) from hanging the agent 413c216e5adSMichael Roth */ 41412505396SDenis V. Lunev qemu_set_nonblock(fileno(fh)); 415c216e5adSMichael Roth 41677dbc81bSMarkus Armbruster handle = guest_file_handle_add(fh, errp); 417a903f40cSMarkus Armbruster if (handle < 0) { 41839097dafSMichael Roth fclose(fh); 41939097dafSMichael Roth return -1; 42039097dafSMichael Roth } 42139097dafSMichael Roth 422d607a523SStefan Weil slog("guest-file-open, handle: %" PRId64, handle); 42339097dafSMichael Roth return handle; 424c216e5adSMichael Roth } 425c216e5adSMichael Roth 42677dbc81bSMarkus Armbruster void qmp_guest_file_close(int64_t handle, Error **errp) 427c216e5adSMichael Roth { 42877dbc81bSMarkus Armbruster GuestFileHandle *gfh = guest_file_handle_find(handle, errp); 429c216e5adSMichael Roth int ret; 430c216e5adSMichael Roth 431d607a523SStefan Weil slog("guest-file-close called, handle: %" PRId64, handle); 432c216e5adSMichael Roth if (!gfh) { 433c216e5adSMichael Roth return; 434c216e5adSMichael Roth } 435c216e5adSMichael Roth 436c216e5adSMichael Roth ret = fclose(gfh->fh); 4373ac4b7c5SLuiz Capitulino if (ret == EOF) { 43877dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to close handle"); 439c216e5adSMichael Roth return; 440c216e5adSMichael Roth } 441c216e5adSMichael Roth 442c216e5adSMichael Roth QTAILQ_REMOVE(&guest_file_state.filehandles, gfh, next); 443c216e5adSMichael Roth g_free(gfh); 444c216e5adSMichael Roth } 445c216e5adSMichael Roth 446c216e5adSMichael Roth struct GuestFileRead *qmp_guest_file_read(int64_t handle, bool has_count, 44777dbc81bSMarkus Armbruster int64_t count, Error **errp) 448c216e5adSMichael Roth { 44977dbc81bSMarkus Armbruster GuestFileHandle *gfh = guest_file_handle_find(handle, errp); 450c216e5adSMichael Roth GuestFileRead *read_data = NULL; 451c216e5adSMichael Roth guchar *buf; 452c216e5adSMichael Roth FILE *fh; 453c216e5adSMichael Roth size_t read_count; 454c216e5adSMichael Roth 455c216e5adSMichael Roth if (!gfh) { 456c216e5adSMichael Roth return NULL; 457c216e5adSMichael Roth } 458c216e5adSMichael Roth 459c216e5adSMichael Roth if (!has_count) { 460c216e5adSMichael Roth count = QGA_READ_COUNT_DEFAULT; 461c216e5adSMichael Roth } else if (count < 0) { 46277dbc81bSMarkus Armbruster error_setg(errp, "value '%" PRId64 "' is invalid for argument count", 463db3edb66SLuiz Capitulino count); 464c216e5adSMichael Roth return NULL; 465c216e5adSMichael Roth } 466c216e5adSMichael Roth 467c216e5adSMichael Roth fh = gfh->fh; 468895b00f6SMarc-André Lureau 469895b00f6SMarc-André Lureau /* explicitly flush when switching from writing to reading */ 470895b00f6SMarc-André Lureau if (gfh->state == RW_STATE_WRITING) { 471895b00f6SMarc-André Lureau int ret = fflush(fh); 472895b00f6SMarc-André Lureau if (ret == EOF) { 473895b00f6SMarc-André Lureau error_setg_errno(errp, errno, "failed to flush file"); 474895b00f6SMarc-André Lureau return NULL; 475895b00f6SMarc-André Lureau } 476895b00f6SMarc-André Lureau gfh->state = RW_STATE_NEW; 477895b00f6SMarc-André Lureau } 478895b00f6SMarc-André Lureau 479c216e5adSMichael Roth buf = g_malloc0(count+1); 480c216e5adSMichael Roth read_count = fread(buf, 1, count, fh); 481c216e5adSMichael Roth if (ferror(fh)) { 48277dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to read file"); 483d607a523SStefan Weil slog("guest-file-read failed, handle: %" PRId64, handle); 484c216e5adSMichael Roth } else { 485c216e5adSMichael Roth buf[read_count] = 0; 486f3a06403SMarkus Armbruster read_data = g_new0(GuestFileRead, 1); 487c216e5adSMichael Roth read_data->count = read_count; 488c216e5adSMichael Roth read_data->eof = feof(fh); 489c216e5adSMichael Roth if (read_count) { 490c216e5adSMichael Roth read_data->buf_b64 = g_base64_encode(buf, read_count); 491c216e5adSMichael Roth } 492895b00f6SMarc-André Lureau gfh->state = RW_STATE_READING; 493c216e5adSMichael Roth } 494c216e5adSMichael Roth g_free(buf); 495c216e5adSMichael Roth clearerr(fh); 496c216e5adSMichael Roth 497c216e5adSMichael Roth return read_data; 498c216e5adSMichael Roth } 499c216e5adSMichael Roth 500c216e5adSMichael Roth GuestFileWrite *qmp_guest_file_write(int64_t handle, const char *buf_b64, 50177dbc81bSMarkus Armbruster bool has_count, int64_t count, 50277dbc81bSMarkus Armbruster Error **errp) 503c216e5adSMichael Roth { 504c216e5adSMichael Roth GuestFileWrite *write_data = NULL; 505c216e5adSMichael Roth guchar *buf; 506c216e5adSMichael Roth gsize buf_len; 507c216e5adSMichael Roth int write_count; 50877dbc81bSMarkus Armbruster GuestFileHandle *gfh = guest_file_handle_find(handle, errp); 509c216e5adSMichael Roth FILE *fh; 510c216e5adSMichael Roth 511c216e5adSMichael Roth if (!gfh) { 512c216e5adSMichael Roth return NULL; 513c216e5adSMichael Roth } 514c216e5adSMichael Roth 515c216e5adSMichael Roth fh = gfh->fh; 516895b00f6SMarc-André Lureau 517895b00f6SMarc-André Lureau if (gfh->state == RW_STATE_READING) { 518895b00f6SMarc-André Lureau int ret = fseek(fh, 0, SEEK_CUR); 519895b00f6SMarc-André Lureau if (ret == -1) { 520895b00f6SMarc-André Lureau error_setg_errno(errp, errno, "failed to seek file"); 521895b00f6SMarc-André Lureau return NULL; 522895b00f6SMarc-André Lureau } 523895b00f6SMarc-André Lureau gfh->state = RW_STATE_NEW; 524895b00f6SMarc-André Lureau } 525895b00f6SMarc-André Lureau 526920639caSDaniel P. Berrange buf = qbase64_decode(buf_b64, -1, &buf_len, errp); 527920639caSDaniel P. Berrange if (!buf) { 528920639caSDaniel P. Berrange return NULL; 529920639caSDaniel P. Berrange } 530c216e5adSMichael Roth 531c216e5adSMichael Roth if (!has_count) { 532c216e5adSMichael Roth count = buf_len; 533c216e5adSMichael Roth } else if (count < 0 || count > buf_len) { 53477dbc81bSMarkus Armbruster error_setg(errp, "value '%" PRId64 "' is invalid for argument count", 535db3edb66SLuiz Capitulino count); 536c216e5adSMichael Roth g_free(buf); 537c216e5adSMichael Roth return NULL; 538c216e5adSMichael Roth } 539c216e5adSMichael Roth 540c216e5adSMichael Roth write_count = fwrite(buf, 1, count, fh); 541c216e5adSMichael Roth if (ferror(fh)) { 54277dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to write to file"); 543d607a523SStefan Weil slog("guest-file-write failed, handle: %" PRId64, handle); 544c216e5adSMichael Roth } else { 545f3a06403SMarkus Armbruster write_data = g_new0(GuestFileWrite, 1); 546c216e5adSMichael Roth write_data->count = write_count; 547c216e5adSMichael Roth write_data->eof = feof(fh); 548895b00f6SMarc-André Lureau gfh->state = RW_STATE_WRITING; 549c216e5adSMichael Roth } 550c216e5adSMichael Roth g_free(buf); 551c216e5adSMichael Roth clearerr(fh); 552c216e5adSMichael Roth 553c216e5adSMichael Roth return write_data; 554c216e5adSMichael Roth } 555c216e5adSMichael Roth 556c216e5adSMichael Roth struct GuestFileSeek *qmp_guest_file_seek(int64_t handle, int64_t offset, 5570b4b4938SEric Blake GuestFileWhence *whence_code, 5580b4b4938SEric Blake Error **errp) 559c216e5adSMichael Roth { 56077dbc81bSMarkus Armbruster GuestFileHandle *gfh = guest_file_handle_find(handle, errp); 561c216e5adSMichael Roth GuestFileSeek *seek_data = NULL; 562c216e5adSMichael Roth FILE *fh; 563c216e5adSMichael Roth int ret; 5640a982b1bSEric Blake int whence; 5650b4b4938SEric Blake Error *err = NULL; 566c216e5adSMichael Roth 567c216e5adSMichael Roth if (!gfh) { 568c216e5adSMichael Roth return NULL; 569c216e5adSMichael Roth } 570c216e5adSMichael Roth 5710a982b1bSEric Blake /* We stupidly exposed 'whence':'int' in our qapi */ 5720b4b4938SEric Blake whence = ga_parse_whence(whence_code, &err); 5730b4b4938SEric Blake if (err) { 5740b4b4938SEric Blake error_propagate(errp, err); 5750a982b1bSEric Blake return NULL; 5760a982b1bSEric Blake } 5770a982b1bSEric Blake 578c216e5adSMichael Roth fh = gfh->fh; 579c216e5adSMichael Roth ret = fseek(fh, offset, whence); 580c216e5adSMichael Roth if (ret == -1) { 58177dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to seek file"); 582895b00f6SMarc-André Lureau if (errno == ESPIPE) { 583895b00f6SMarc-André Lureau /* file is non-seekable, stdio shouldn't be buffering anyways */ 584895b00f6SMarc-André Lureau gfh->state = RW_STATE_NEW; 585895b00f6SMarc-André Lureau } 586c216e5adSMichael Roth } else { 58710b7c5ddSMarkus Armbruster seek_data = g_new0(GuestFileSeek, 1); 588c216e5adSMichael Roth seek_data->position = ftell(fh); 589c216e5adSMichael Roth seek_data->eof = feof(fh); 590895b00f6SMarc-André Lureau gfh->state = RW_STATE_NEW; 591c216e5adSMichael Roth } 592c216e5adSMichael Roth clearerr(fh); 593c216e5adSMichael Roth 594c216e5adSMichael Roth return seek_data; 595c216e5adSMichael Roth } 596c216e5adSMichael Roth 59777dbc81bSMarkus Armbruster void qmp_guest_file_flush(int64_t handle, Error **errp) 598c216e5adSMichael Roth { 59977dbc81bSMarkus Armbruster GuestFileHandle *gfh = guest_file_handle_find(handle, errp); 600c216e5adSMichael Roth FILE *fh; 601c216e5adSMichael Roth int ret; 602c216e5adSMichael Roth 603c216e5adSMichael Roth if (!gfh) { 604c216e5adSMichael Roth return; 605c216e5adSMichael Roth } 606c216e5adSMichael Roth 607c216e5adSMichael Roth fh = gfh->fh; 608c216e5adSMichael Roth ret = fflush(fh); 609c216e5adSMichael Roth if (ret == EOF) { 61077dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to flush file"); 611895b00f6SMarc-André Lureau } else { 612895b00f6SMarc-André Lureau gfh->state = RW_STATE_NEW; 613c216e5adSMichael Roth } 614c216e5adSMichael Roth } 615c216e5adSMichael Roth 616e72c3f2eSMichael Roth /* linux-specific implementations. avoid this if at all possible. */ 617e72c3f2eSMichael Roth #if defined(__linux__) 618e72c3f2eSMichael Roth 619eab5fd59SPaolo Bonzini #if defined(CONFIG_FSFREEZE) || defined(CONFIG_FSTRIM) 620af02203fSPaolo Bonzini typedef struct FsMount { 621c216e5adSMichael Roth char *dirname; 622c216e5adSMichael Roth char *devtype; 62346d4c572STomoki Sekiyama unsigned int devmajor, devminor; 624af02203fSPaolo Bonzini QTAILQ_ENTRY(FsMount) next; 625af02203fSPaolo Bonzini } FsMount; 626c216e5adSMichael Roth 627e5d9adbdSTomoki Sekiyama typedef QTAILQ_HEAD(FsMountList, FsMount) FsMountList; 6289e8aded4SMichael Roth 629af02203fSPaolo Bonzini static void free_fs_mount_list(FsMountList *mounts) 630c216e5adSMichael Roth { 631af02203fSPaolo Bonzini FsMount *mount, *temp; 632c216e5adSMichael Roth 6339e8aded4SMichael Roth if (!mounts) { 6349e8aded4SMichael Roth return; 6359e8aded4SMichael Roth } 6369e8aded4SMichael Roth 6379e8aded4SMichael Roth QTAILQ_FOREACH_SAFE(mount, mounts, next, temp) { 6389e8aded4SMichael Roth QTAILQ_REMOVE(mounts, mount, next); 639c216e5adSMichael Roth g_free(mount->dirname); 640c216e5adSMichael Roth g_free(mount->devtype); 641c216e5adSMichael Roth g_free(mount); 642c216e5adSMichael Roth } 6439e8aded4SMichael Roth } 6449e8aded4SMichael Roth 64546d4c572STomoki Sekiyama static int dev_major_minor(const char *devpath, 64646d4c572STomoki Sekiyama unsigned int *devmajor, unsigned int *devminor) 64746d4c572STomoki Sekiyama { 64846d4c572STomoki Sekiyama struct stat st; 64946d4c572STomoki Sekiyama 65046d4c572STomoki Sekiyama *devmajor = 0; 65146d4c572STomoki Sekiyama *devminor = 0; 65246d4c572STomoki Sekiyama 65346d4c572STomoki Sekiyama if (stat(devpath, &st) < 0) { 65446d4c572STomoki Sekiyama slog("failed to stat device file '%s': %s", devpath, strerror(errno)); 65546d4c572STomoki Sekiyama return -1; 65646d4c572STomoki Sekiyama } 65746d4c572STomoki Sekiyama if (S_ISDIR(st.st_mode)) { 65846d4c572STomoki Sekiyama /* It is bind mount */ 65946d4c572STomoki Sekiyama return -2; 66046d4c572STomoki Sekiyama } 66146d4c572STomoki Sekiyama if (S_ISBLK(st.st_mode)) { 66246d4c572STomoki Sekiyama *devmajor = major(st.st_rdev); 66346d4c572STomoki Sekiyama *devminor = minor(st.st_rdev); 66446d4c572STomoki Sekiyama return 0; 66546d4c572STomoki Sekiyama } 66646d4c572STomoki Sekiyama return -1; 66746d4c572STomoki Sekiyama } 66846d4c572STomoki Sekiyama 6699e8aded4SMichael Roth /* 6709e8aded4SMichael Roth * Walk the mount table and build a list of local file systems 6719e8aded4SMichael Roth */ 67246d4c572STomoki Sekiyama static void build_fs_mount_list_from_mtab(FsMountList *mounts, Error **errp) 6739e8aded4SMichael Roth { 6749e8aded4SMichael Roth struct mntent *ment; 675af02203fSPaolo Bonzini FsMount *mount; 6769e2fa418SMichael Roth char const *mtab = "/proc/self/mounts"; 6779e8aded4SMichael Roth FILE *fp; 67846d4c572STomoki Sekiyama unsigned int devmajor, devminor; 679c216e5adSMichael Roth 680c216e5adSMichael Roth fp = setmntent(mtab, "r"); 681c216e5adSMichael Roth if (!fp) { 68277dbc81bSMarkus Armbruster error_setg(errp, "failed to open mtab file: '%s'", mtab); 683261551d1SLuiz Capitulino return; 684c216e5adSMichael Roth } 685c216e5adSMichael Roth 686c216e5adSMichael Roth while ((ment = getmntent(fp))) { 687c216e5adSMichael Roth /* 688c216e5adSMichael Roth * An entry which device name doesn't start with a '/' is 689c216e5adSMichael Roth * either a dummy file system or a network file system. 690c216e5adSMichael Roth * Add special handling for smbfs and cifs as is done by 691c216e5adSMichael Roth * coreutils as well. 692c216e5adSMichael Roth */ 693c216e5adSMichael Roth if ((ment->mnt_fsname[0] != '/') || 694c216e5adSMichael Roth (strcmp(ment->mnt_type, "smbfs") == 0) || 695c216e5adSMichael Roth (strcmp(ment->mnt_type, "cifs") == 0)) { 696c216e5adSMichael Roth continue; 697c216e5adSMichael Roth } 69846d4c572STomoki Sekiyama if (dev_major_minor(ment->mnt_fsname, &devmajor, &devminor) == -2) { 69946d4c572STomoki Sekiyama /* Skip bind mounts */ 70046d4c572STomoki Sekiyama continue; 70146d4c572STomoki Sekiyama } 702c216e5adSMichael Roth 703f3a06403SMarkus Armbruster mount = g_new0(FsMount, 1); 704c216e5adSMichael Roth mount->dirname = g_strdup(ment->mnt_dir); 705c216e5adSMichael Roth mount->devtype = g_strdup(ment->mnt_type); 70646d4c572STomoki Sekiyama mount->devmajor = devmajor; 70746d4c572STomoki Sekiyama mount->devminor = devminor; 708c216e5adSMichael Roth 7099e8aded4SMichael Roth QTAILQ_INSERT_TAIL(mounts, mount, next); 710c216e5adSMichael Roth } 711c216e5adSMichael Roth 712c216e5adSMichael Roth endmntent(fp); 713c216e5adSMichael Roth } 71446d4c572STomoki Sekiyama 71546d4c572STomoki Sekiyama static void decode_mntname(char *name, int len) 71646d4c572STomoki Sekiyama { 71746d4c572STomoki Sekiyama int i, j = 0; 71846d4c572STomoki Sekiyama for (i = 0; i <= len; i++) { 71946d4c572STomoki Sekiyama if (name[i] != '\\') { 72046d4c572STomoki Sekiyama name[j++] = name[i]; 72146d4c572STomoki Sekiyama } else if (name[i + 1] == '\\') { 72246d4c572STomoki Sekiyama name[j++] = '\\'; 72346d4c572STomoki Sekiyama i++; 72446d4c572STomoki Sekiyama } else if (name[i + 1] >= '0' && name[i + 1] <= '3' && 72546d4c572STomoki Sekiyama name[i + 2] >= '0' && name[i + 2] <= '7' && 72646d4c572STomoki Sekiyama name[i + 3] >= '0' && name[i + 3] <= '7') { 72746d4c572STomoki Sekiyama name[j++] = (name[i + 1] - '0') * 64 + 72846d4c572STomoki Sekiyama (name[i + 2] - '0') * 8 + 72946d4c572STomoki Sekiyama (name[i + 3] - '0'); 73046d4c572STomoki Sekiyama i += 3; 73146d4c572STomoki Sekiyama } else { 73246d4c572STomoki Sekiyama name[j++] = name[i]; 73346d4c572STomoki Sekiyama } 73446d4c572STomoki Sekiyama } 73546d4c572STomoki Sekiyama } 73646d4c572STomoki Sekiyama 73746d4c572STomoki Sekiyama static void build_fs_mount_list(FsMountList *mounts, Error **errp) 73846d4c572STomoki Sekiyama { 73946d4c572STomoki Sekiyama FsMount *mount; 74046d4c572STomoki Sekiyama char const *mountinfo = "/proc/self/mountinfo"; 74146d4c572STomoki Sekiyama FILE *fp; 74246d4c572STomoki Sekiyama char *line = NULL, *dash; 74346d4c572STomoki Sekiyama size_t n; 74446d4c572STomoki Sekiyama char check; 74546d4c572STomoki Sekiyama unsigned int devmajor, devminor; 74646d4c572STomoki Sekiyama int ret, dir_s, dir_e, type_s, type_e, dev_s, dev_e; 74746d4c572STomoki Sekiyama 74846d4c572STomoki Sekiyama fp = fopen(mountinfo, "r"); 74946d4c572STomoki Sekiyama if (!fp) { 75046d4c572STomoki Sekiyama build_fs_mount_list_from_mtab(mounts, errp); 75146d4c572STomoki Sekiyama return; 75246d4c572STomoki Sekiyama } 75346d4c572STomoki Sekiyama 75446d4c572STomoki Sekiyama while (getline(&line, &n, fp) != -1) { 75546d4c572STomoki Sekiyama ret = sscanf(line, "%*u %*u %u:%u %*s %n%*s%n%c", 75646d4c572STomoki Sekiyama &devmajor, &devminor, &dir_s, &dir_e, &check); 75746d4c572STomoki Sekiyama if (ret < 3) { 75846d4c572STomoki Sekiyama continue; 75946d4c572STomoki Sekiyama } 76046d4c572STomoki Sekiyama dash = strstr(line + dir_e, " - "); 76146d4c572STomoki Sekiyama if (!dash) { 76246d4c572STomoki Sekiyama continue; 76346d4c572STomoki Sekiyama } 76446d4c572STomoki Sekiyama ret = sscanf(dash, " - %n%*s%n %n%*s%n%c", 76546d4c572STomoki Sekiyama &type_s, &type_e, &dev_s, &dev_e, &check); 76646d4c572STomoki Sekiyama if (ret < 1) { 76746d4c572STomoki Sekiyama continue; 76846d4c572STomoki Sekiyama } 76946d4c572STomoki Sekiyama line[dir_e] = 0; 77046d4c572STomoki Sekiyama dash[type_e] = 0; 77146d4c572STomoki Sekiyama dash[dev_e] = 0; 77246d4c572STomoki Sekiyama decode_mntname(line + dir_s, dir_e - dir_s); 77346d4c572STomoki Sekiyama decode_mntname(dash + dev_s, dev_e - dev_s); 77446d4c572STomoki Sekiyama if (devmajor == 0) { 77546d4c572STomoki Sekiyama /* btrfs reports major number = 0 */ 77646d4c572STomoki Sekiyama if (strcmp("btrfs", dash + type_s) != 0 || 77746d4c572STomoki Sekiyama dev_major_minor(dash + dev_s, &devmajor, &devminor) < 0) { 77846d4c572STomoki Sekiyama continue; 77946d4c572STomoki Sekiyama } 78046d4c572STomoki Sekiyama } 78146d4c572STomoki Sekiyama 782f3a06403SMarkus Armbruster mount = g_new0(FsMount, 1); 78346d4c572STomoki Sekiyama mount->dirname = g_strdup(line + dir_s); 78446d4c572STomoki Sekiyama mount->devtype = g_strdup(dash + type_s); 78546d4c572STomoki Sekiyama mount->devmajor = devmajor; 78646d4c572STomoki Sekiyama mount->devminor = devminor; 78746d4c572STomoki Sekiyama 78846d4c572STomoki Sekiyama QTAILQ_INSERT_TAIL(mounts, mount, next); 78946d4c572STomoki Sekiyama } 79046d4c572STomoki Sekiyama free(line); 79146d4c572STomoki Sekiyama 79246d4c572STomoki Sekiyama fclose(fp); 79346d4c572STomoki Sekiyama } 794eab5fd59SPaolo Bonzini #endif 795eab5fd59SPaolo Bonzini 796eab5fd59SPaolo Bonzini #if defined(CONFIG_FSFREEZE) 797c216e5adSMichael Roth 79846d4c572STomoki Sekiyama static char *get_pci_driver(char const *syspath, int pathlen, Error **errp) 79946d4c572STomoki Sekiyama { 80046d4c572STomoki Sekiyama char *path; 80146d4c572STomoki Sekiyama char *dpath; 80246d4c572STomoki Sekiyama char *driver = NULL; 80346d4c572STomoki Sekiyama char buf[PATH_MAX]; 80446d4c572STomoki Sekiyama ssize_t len; 80546d4c572STomoki Sekiyama 80646d4c572STomoki Sekiyama path = g_strndup(syspath, pathlen); 80746d4c572STomoki Sekiyama dpath = g_strdup_printf("%s/driver", path); 80846d4c572STomoki Sekiyama len = readlink(dpath, buf, sizeof(buf) - 1); 80946d4c572STomoki Sekiyama if (len != -1) { 81046d4c572STomoki Sekiyama buf[len] = 0; 811*3e015d81SJulia Suvorova driver = g_path_get_basename(buf); 81246d4c572STomoki Sekiyama } 81346d4c572STomoki Sekiyama g_free(dpath); 81446d4c572STomoki Sekiyama g_free(path); 81546d4c572STomoki Sekiyama return driver; 81646d4c572STomoki Sekiyama } 81746d4c572STomoki Sekiyama 81846d4c572STomoki Sekiyama static int compare_uint(const void *_a, const void *_b) 81946d4c572STomoki Sekiyama { 82046d4c572STomoki Sekiyama unsigned int a = *(unsigned int *)_a; 82146d4c572STomoki Sekiyama unsigned int b = *(unsigned int *)_b; 82246d4c572STomoki Sekiyama 82346d4c572STomoki Sekiyama return a < b ? -1 : a > b ? 1 : 0; 82446d4c572STomoki Sekiyama } 82546d4c572STomoki Sekiyama 82646d4c572STomoki Sekiyama /* Walk the specified sysfs and build a sorted list of host or ata numbers */ 82746d4c572STomoki Sekiyama static int build_hosts(char const *syspath, char const *host, bool ata, 82846d4c572STomoki Sekiyama unsigned int *hosts, int hosts_max, Error **errp) 82946d4c572STomoki Sekiyama { 83046d4c572STomoki Sekiyama char *path; 83146d4c572STomoki Sekiyama DIR *dir; 83246d4c572STomoki Sekiyama struct dirent *entry; 83346d4c572STomoki Sekiyama int i = 0; 83446d4c572STomoki Sekiyama 83546d4c572STomoki Sekiyama path = g_strndup(syspath, host - syspath); 83646d4c572STomoki Sekiyama dir = opendir(path); 83746d4c572STomoki Sekiyama if (!dir) { 83846d4c572STomoki Sekiyama error_setg_errno(errp, errno, "opendir(\"%s\")", path); 83946d4c572STomoki Sekiyama g_free(path); 84046d4c572STomoki Sekiyama return -1; 84146d4c572STomoki Sekiyama } 84246d4c572STomoki Sekiyama 84346d4c572STomoki Sekiyama while (i < hosts_max) { 84446d4c572STomoki Sekiyama entry = readdir(dir); 84546d4c572STomoki Sekiyama if (!entry) { 84646d4c572STomoki Sekiyama break; 84746d4c572STomoki Sekiyama } 84846d4c572STomoki Sekiyama if (ata && sscanf(entry->d_name, "ata%d", hosts + i) == 1) { 84946d4c572STomoki Sekiyama ++i; 85046d4c572STomoki Sekiyama } else if (!ata && sscanf(entry->d_name, "host%d", hosts + i) == 1) { 85146d4c572STomoki Sekiyama ++i; 85246d4c572STomoki Sekiyama } 85346d4c572STomoki Sekiyama } 85446d4c572STomoki Sekiyama 85546d4c572STomoki Sekiyama qsort(hosts, i, sizeof(hosts[0]), compare_uint); 85646d4c572STomoki Sekiyama 85746d4c572STomoki Sekiyama g_free(path); 85846d4c572STomoki Sekiyama closedir(dir); 85946d4c572STomoki Sekiyama return i; 86046d4c572STomoki Sekiyama } 86146d4c572STomoki Sekiyama 86246d4c572STomoki Sekiyama /* Store disk device info specified by @sysfs into @fs */ 86346d4c572STomoki Sekiyama static void build_guest_fsinfo_for_real_device(char const *syspath, 86446d4c572STomoki Sekiyama GuestFilesystemInfo *fs, 86546d4c572STomoki Sekiyama Error **errp) 86646d4c572STomoki Sekiyama { 86746d4c572STomoki Sekiyama unsigned int pci[4], host, hosts[8], tgt[3]; 86846d4c572STomoki Sekiyama int i, nhosts = 0, pcilen; 86946d4c572STomoki Sekiyama GuestDiskAddress *disk; 87046d4c572STomoki Sekiyama GuestPCIAddress *pciaddr; 87146d4c572STomoki Sekiyama GuestDiskAddressList *list = NULL; 87246d4c572STomoki Sekiyama bool has_ata = false, has_host = false, has_tgt = false; 87346d4c572STomoki Sekiyama char *p, *q, *driver = NULL; 87446d4c572STomoki Sekiyama 87546d4c572STomoki Sekiyama p = strstr(syspath, "/devices/pci"); 87646d4c572STomoki Sekiyama if (!p || sscanf(p + 12, "%*x:%*x/%x:%x:%x.%x%n", 87746d4c572STomoki Sekiyama pci, pci + 1, pci + 2, pci + 3, &pcilen) < 4) { 87846d4c572STomoki Sekiyama g_debug("only pci device is supported: sysfs path \"%s\"", syspath); 87946d4c572STomoki Sekiyama return; 88046d4c572STomoki Sekiyama } 88146d4c572STomoki Sekiyama 88246d4c572STomoki Sekiyama driver = get_pci_driver(syspath, (p + 12 + pcilen) - syspath, errp); 88346d4c572STomoki Sekiyama if (!driver) { 88446d4c572STomoki Sekiyama goto cleanup; 88546d4c572STomoki Sekiyama } 88646d4c572STomoki Sekiyama 88746d4c572STomoki Sekiyama p = strstr(syspath, "/target"); 88846d4c572STomoki Sekiyama if (p && sscanf(p + 7, "%*u:%*u:%*u/%*u:%u:%u:%u", 88946d4c572STomoki Sekiyama tgt, tgt + 1, tgt + 2) == 3) { 89046d4c572STomoki Sekiyama has_tgt = true; 89146d4c572STomoki Sekiyama } 89246d4c572STomoki Sekiyama 89346d4c572STomoki Sekiyama p = strstr(syspath, "/ata"); 89446d4c572STomoki Sekiyama if (p) { 89546d4c572STomoki Sekiyama q = p + 4; 89646d4c572STomoki Sekiyama has_ata = true; 89746d4c572STomoki Sekiyama } else { 89846d4c572STomoki Sekiyama p = strstr(syspath, "/host"); 89946d4c572STomoki Sekiyama q = p + 5; 90046d4c572STomoki Sekiyama } 90146d4c572STomoki Sekiyama if (p && sscanf(q, "%u", &host) == 1) { 90246d4c572STomoki Sekiyama has_host = true; 90346d4c572STomoki Sekiyama nhosts = build_hosts(syspath, p, has_ata, hosts, 90401a6df1bSPhilippe Mathieu-Daudé ARRAY_SIZE(hosts), errp); 90546d4c572STomoki Sekiyama if (nhosts < 0) { 90646d4c572STomoki Sekiyama goto cleanup; 90746d4c572STomoki Sekiyama } 90846d4c572STomoki Sekiyama } 90946d4c572STomoki Sekiyama 91046d4c572STomoki Sekiyama pciaddr = g_malloc0(sizeof(*pciaddr)); 91146d4c572STomoki Sekiyama pciaddr->domain = pci[0]; 91246d4c572STomoki Sekiyama pciaddr->bus = pci[1]; 91346d4c572STomoki Sekiyama pciaddr->slot = pci[2]; 91446d4c572STomoki Sekiyama pciaddr->function = pci[3]; 91546d4c572STomoki Sekiyama 91646d4c572STomoki Sekiyama disk = g_malloc0(sizeof(*disk)); 91746d4c572STomoki Sekiyama disk->pci_controller = pciaddr; 91846d4c572STomoki Sekiyama 91946d4c572STomoki Sekiyama list = g_malloc0(sizeof(*list)); 92046d4c572STomoki Sekiyama list->value = disk; 92146d4c572STomoki Sekiyama 92246d4c572STomoki Sekiyama if (strcmp(driver, "ata_piix") == 0) { 92346d4c572STomoki Sekiyama /* a host per ide bus, target*:0:<unit>:0 */ 92446d4c572STomoki Sekiyama if (!has_host || !has_tgt) { 92546d4c572STomoki Sekiyama g_debug("invalid sysfs path '%s' (driver '%s')", syspath, driver); 92646d4c572STomoki Sekiyama goto cleanup; 92746d4c572STomoki Sekiyama } 92846d4c572STomoki Sekiyama for (i = 0; i < nhosts; i++) { 92946d4c572STomoki Sekiyama if (host == hosts[i]) { 93046d4c572STomoki Sekiyama disk->bus_type = GUEST_DISK_BUS_TYPE_IDE; 93146d4c572STomoki Sekiyama disk->bus = i; 93246d4c572STomoki Sekiyama disk->unit = tgt[1]; 93346d4c572STomoki Sekiyama break; 93446d4c572STomoki Sekiyama } 93546d4c572STomoki Sekiyama } 93646d4c572STomoki Sekiyama if (i >= nhosts) { 93746d4c572STomoki Sekiyama g_debug("no host for '%s' (driver '%s')", syspath, driver); 93846d4c572STomoki Sekiyama goto cleanup; 93946d4c572STomoki Sekiyama } 94046d4c572STomoki Sekiyama } else if (strcmp(driver, "sym53c8xx") == 0) { 94146d4c572STomoki Sekiyama /* scsi(LSI Logic): target*:0:<unit>:0 */ 94246d4c572STomoki Sekiyama if (!has_tgt) { 94346d4c572STomoki Sekiyama g_debug("invalid sysfs path '%s' (driver '%s')", syspath, driver); 94446d4c572STomoki Sekiyama goto cleanup; 94546d4c572STomoki Sekiyama } 94646d4c572STomoki Sekiyama disk->bus_type = GUEST_DISK_BUS_TYPE_SCSI; 94746d4c572STomoki Sekiyama disk->unit = tgt[1]; 94846d4c572STomoki Sekiyama } else if (strcmp(driver, "virtio-pci") == 0) { 94946d4c572STomoki Sekiyama if (has_tgt) { 95046d4c572STomoki Sekiyama /* virtio-scsi: target*:0:0:<unit> */ 95146d4c572STomoki Sekiyama disk->bus_type = GUEST_DISK_BUS_TYPE_SCSI; 95246d4c572STomoki Sekiyama disk->unit = tgt[2]; 95346d4c572STomoki Sekiyama } else { 95446d4c572STomoki Sekiyama /* virtio-blk: 1 disk per 1 device */ 95546d4c572STomoki Sekiyama disk->bus_type = GUEST_DISK_BUS_TYPE_VIRTIO; 95646d4c572STomoki Sekiyama } 95746d4c572STomoki Sekiyama } else if (strcmp(driver, "ahci") == 0) { 95846d4c572STomoki Sekiyama /* ahci: 1 host per 1 unit */ 95946d4c572STomoki Sekiyama if (!has_host || !has_tgt) { 96046d4c572STomoki Sekiyama g_debug("invalid sysfs path '%s' (driver '%s')", syspath, driver); 96146d4c572STomoki Sekiyama goto cleanup; 96246d4c572STomoki Sekiyama } 96346d4c572STomoki Sekiyama for (i = 0; i < nhosts; i++) { 96446d4c572STomoki Sekiyama if (host == hosts[i]) { 96546d4c572STomoki Sekiyama disk->unit = i; 96646d4c572STomoki Sekiyama disk->bus_type = GUEST_DISK_BUS_TYPE_SATA; 96746d4c572STomoki Sekiyama break; 96846d4c572STomoki Sekiyama } 96946d4c572STomoki Sekiyama } 97046d4c572STomoki Sekiyama if (i >= nhosts) { 97146d4c572STomoki Sekiyama g_debug("no host for '%s' (driver '%s')", syspath, driver); 97246d4c572STomoki Sekiyama goto cleanup; 97346d4c572STomoki Sekiyama } 97446d4c572STomoki Sekiyama } else { 97546d4c572STomoki Sekiyama g_debug("unknown driver '%s' (sysfs path '%s')", driver, syspath); 97646d4c572STomoki Sekiyama goto cleanup; 97746d4c572STomoki Sekiyama } 97846d4c572STomoki Sekiyama 97946d4c572STomoki Sekiyama list->next = fs->disk; 98046d4c572STomoki Sekiyama fs->disk = list; 98146d4c572STomoki Sekiyama g_free(driver); 98246d4c572STomoki Sekiyama return; 98346d4c572STomoki Sekiyama 98446d4c572STomoki Sekiyama cleanup: 98546d4c572STomoki Sekiyama if (list) { 98646d4c572STomoki Sekiyama qapi_free_GuestDiskAddressList(list); 98746d4c572STomoki Sekiyama } 98846d4c572STomoki Sekiyama g_free(driver); 98946d4c572STomoki Sekiyama } 99046d4c572STomoki Sekiyama 99146d4c572STomoki Sekiyama static void build_guest_fsinfo_for_device(char const *devpath, 99246d4c572STomoki Sekiyama GuestFilesystemInfo *fs, 99346d4c572STomoki Sekiyama Error **errp); 99446d4c572STomoki Sekiyama 99546d4c572STomoki Sekiyama /* Store a list of slave devices of virtual volume specified by @syspath into 99646d4c572STomoki Sekiyama * @fs */ 99746d4c572STomoki Sekiyama static void build_guest_fsinfo_for_virtual_device(char const *syspath, 99846d4c572STomoki Sekiyama GuestFilesystemInfo *fs, 99946d4c572STomoki Sekiyama Error **errp) 100046d4c572STomoki Sekiyama { 100146d4c572STomoki Sekiyama DIR *dir; 100246d4c572STomoki Sekiyama char *dirpath; 1003e668d1b8Szhanghailiang struct dirent *entry; 100446d4c572STomoki Sekiyama 100546d4c572STomoki Sekiyama dirpath = g_strdup_printf("%s/slaves", syspath); 100646d4c572STomoki Sekiyama dir = opendir(dirpath); 100746d4c572STomoki Sekiyama if (!dir) { 10088251a72fSMichael Roth if (errno != ENOENT) { 100946d4c572STomoki Sekiyama error_setg_errno(errp, errno, "opendir(\"%s\")", dirpath); 10108251a72fSMichael Roth } 101146d4c572STomoki Sekiyama g_free(dirpath); 101246d4c572STomoki Sekiyama return; 101346d4c572STomoki Sekiyama } 101446d4c572STomoki Sekiyama 101546d4c572STomoki Sekiyama for (;;) { 1016e668d1b8Szhanghailiang errno = 0; 1017e668d1b8Szhanghailiang entry = readdir(dir); 1018e668d1b8Szhanghailiang if (entry == NULL) { 1019e668d1b8Szhanghailiang if (errno) { 1020e668d1b8Szhanghailiang error_setg_errno(errp, errno, "readdir(\"%s\")", dirpath); 102146d4c572STomoki Sekiyama } 102246d4c572STomoki Sekiyama break; 102346d4c572STomoki Sekiyama } 102446d4c572STomoki Sekiyama 1025e668d1b8Szhanghailiang if (entry->d_type == DT_LNK) { 1026e668d1b8Szhanghailiang char *path; 1027e668d1b8Szhanghailiang 1028e668d1b8Szhanghailiang g_debug(" slave device '%s'", entry->d_name); 1029e668d1b8Szhanghailiang path = g_strdup_printf("%s/slaves/%s", syspath, entry->d_name); 1030e668d1b8Szhanghailiang build_guest_fsinfo_for_device(path, fs, errp); 1031e668d1b8Szhanghailiang g_free(path); 103246d4c572STomoki Sekiyama 103346d4c572STomoki Sekiyama if (*errp) { 103446d4c572STomoki Sekiyama break; 103546d4c572STomoki Sekiyama } 103646d4c572STomoki Sekiyama } 103746d4c572STomoki Sekiyama } 103846d4c572STomoki Sekiyama 1039e668d1b8Szhanghailiang g_free(dirpath); 104046d4c572STomoki Sekiyama closedir(dir); 104146d4c572STomoki Sekiyama } 104246d4c572STomoki Sekiyama 104346d4c572STomoki Sekiyama /* Dispatch to functions for virtual/real device */ 104446d4c572STomoki Sekiyama static void build_guest_fsinfo_for_device(char const *devpath, 104546d4c572STomoki Sekiyama GuestFilesystemInfo *fs, 104646d4c572STomoki Sekiyama Error **errp) 104746d4c572STomoki Sekiyama { 104846d4c572STomoki Sekiyama char *syspath = realpath(devpath, NULL); 104946d4c572STomoki Sekiyama 105046d4c572STomoki Sekiyama if (!syspath) { 105146d4c572STomoki Sekiyama error_setg_errno(errp, errno, "realpath(\"%s\")", devpath); 105246d4c572STomoki Sekiyama return; 105346d4c572STomoki Sekiyama } 105446d4c572STomoki Sekiyama 105546d4c572STomoki Sekiyama if (!fs->name) { 1056*3e015d81SJulia Suvorova fs->name = g_path_get_basename(syspath); 105746d4c572STomoki Sekiyama } 105846d4c572STomoki Sekiyama 105946d4c572STomoki Sekiyama g_debug(" parse sysfs path '%s'", syspath); 106046d4c572STomoki Sekiyama 106146d4c572STomoki Sekiyama if (strstr(syspath, "/devices/virtual/block/")) { 106246d4c572STomoki Sekiyama build_guest_fsinfo_for_virtual_device(syspath, fs, errp); 106346d4c572STomoki Sekiyama } else { 106446d4c572STomoki Sekiyama build_guest_fsinfo_for_real_device(syspath, fs, errp); 106546d4c572STomoki Sekiyama } 106646d4c572STomoki Sekiyama 106746d4c572STomoki Sekiyama free(syspath); 106846d4c572STomoki Sekiyama } 106946d4c572STomoki Sekiyama 107046d4c572STomoki Sekiyama /* Return a list of the disk device(s)' info which @mount lies on */ 107146d4c572STomoki Sekiyama static GuestFilesystemInfo *build_guest_fsinfo(struct FsMount *mount, 107246d4c572STomoki Sekiyama Error **errp) 107346d4c572STomoki Sekiyama { 107446d4c572STomoki Sekiyama GuestFilesystemInfo *fs = g_malloc0(sizeof(*fs)); 107546d4c572STomoki Sekiyama char *devpath = g_strdup_printf("/sys/dev/block/%u:%u", 107646d4c572STomoki Sekiyama mount->devmajor, mount->devminor); 107746d4c572STomoki Sekiyama 107846d4c572STomoki Sekiyama fs->mountpoint = g_strdup(mount->dirname); 107946d4c572STomoki Sekiyama fs->type = g_strdup(mount->devtype); 108046d4c572STomoki Sekiyama build_guest_fsinfo_for_device(devpath, fs, errp); 108146d4c572STomoki Sekiyama 108246d4c572STomoki Sekiyama g_free(devpath); 108346d4c572STomoki Sekiyama return fs; 108446d4c572STomoki Sekiyama } 108546d4c572STomoki Sekiyama 108646d4c572STomoki Sekiyama GuestFilesystemInfoList *qmp_guest_get_fsinfo(Error **errp) 108746d4c572STomoki Sekiyama { 108846d4c572STomoki Sekiyama FsMountList mounts; 108946d4c572STomoki Sekiyama struct FsMount *mount; 109046d4c572STomoki Sekiyama GuestFilesystemInfoList *new, *ret = NULL; 109146d4c572STomoki Sekiyama Error *local_err = NULL; 109246d4c572STomoki Sekiyama 109346d4c572STomoki Sekiyama QTAILQ_INIT(&mounts); 109446d4c572STomoki Sekiyama build_fs_mount_list(&mounts, &local_err); 109546d4c572STomoki Sekiyama if (local_err) { 109646d4c572STomoki Sekiyama error_propagate(errp, local_err); 109746d4c572STomoki Sekiyama return NULL; 109846d4c572STomoki Sekiyama } 109946d4c572STomoki Sekiyama 110046d4c572STomoki Sekiyama QTAILQ_FOREACH(mount, &mounts, next) { 110146d4c572STomoki Sekiyama g_debug("Building guest fsinfo for '%s'", mount->dirname); 110246d4c572STomoki Sekiyama 110346d4c572STomoki Sekiyama new = g_malloc0(sizeof(*ret)); 110446d4c572STomoki Sekiyama new->value = build_guest_fsinfo(mount, &local_err); 110546d4c572STomoki Sekiyama new->next = ret; 110646d4c572STomoki Sekiyama ret = new; 110746d4c572STomoki Sekiyama if (local_err) { 110846d4c572STomoki Sekiyama error_propagate(errp, local_err); 110946d4c572STomoki Sekiyama qapi_free_GuestFilesystemInfoList(ret); 111046d4c572STomoki Sekiyama ret = NULL; 111146d4c572STomoki Sekiyama break; 111246d4c572STomoki Sekiyama } 111346d4c572STomoki Sekiyama } 111446d4c572STomoki Sekiyama 111546d4c572STomoki Sekiyama free_fs_mount_list(&mounts); 111646d4c572STomoki Sekiyama return ret; 111746d4c572STomoki Sekiyama } 111846d4c572STomoki Sekiyama 111946d4c572STomoki Sekiyama 1120ec0f694cSTomoki Sekiyama typedef enum { 1121ec0f694cSTomoki Sekiyama FSFREEZE_HOOK_THAW = 0, 1122ec0f694cSTomoki Sekiyama FSFREEZE_HOOK_FREEZE, 1123ec0f694cSTomoki Sekiyama } FsfreezeHookArg; 1124ec0f694cSTomoki Sekiyama 112513a439ecSStefan Weil static const char *fsfreeze_hook_arg_string[] = { 1126ec0f694cSTomoki Sekiyama "thaw", 1127ec0f694cSTomoki Sekiyama "freeze", 1128ec0f694cSTomoki Sekiyama }; 1129ec0f694cSTomoki Sekiyama 113077dbc81bSMarkus Armbruster static void execute_fsfreeze_hook(FsfreezeHookArg arg, Error **errp) 1131ec0f694cSTomoki Sekiyama { 1132ec0f694cSTomoki Sekiyama int status; 1133ec0f694cSTomoki Sekiyama pid_t pid; 1134ec0f694cSTomoki Sekiyama const char *hook; 1135ec0f694cSTomoki Sekiyama const char *arg_str = fsfreeze_hook_arg_string[arg]; 1136ec0f694cSTomoki Sekiyama Error *local_err = NULL; 1137ec0f694cSTomoki Sekiyama 1138ec0f694cSTomoki Sekiyama hook = ga_fsfreeze_hook(ga_state); 1139ec0f694cSTomoki Sekiyama if (!hook) { 1140ec0f694cSTomoki Sekiyama return; 1141ec0f694cSTomoki Sekiyama } 1142ec0f694cSTomoki Sekiyama if (access(hook, X_OK) != 0) { 114377dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "can't access fsfreeze hook '%s'", hook); 1144ec0f694cSTomoki Sekiyama return; 1145ec0f694cSTomoki Sekiyama } 1146ec0f694cSTomoki Sekiyama 1147ec0f694cSTomoki Sekiyama slog("executing fsfreeze hook with arg '%s'", arg_str); 1148ec0f694cSTomoki Sekiyama pid = fork(); 1149ec0f694cSTomoki Sekiyama if (pid == 0) { 1150ec0f694cSTomoki Sekiyama setsid(); 1151ec0f694cSTomoki Sekiyama reopen_fd_to_null(0); 1152ec0f694cSTomoki Sekiyama reopen_fd_to_null(1); 1153ec0f694cSTomoki Sekiyama reopen_fd_to_null(2); 1154ec0f694cSTomoki Sekiyama 1155ec0f694cSTomoki Sekiyama execle(hook, hook, arg_str, NULL, environ); 1156ec0f694cSTomoki Sekiyama _exit(EXIT_FAILURE); 1157ec0f694cSTomoki Sekiyama } else if (pid < 0) { 115877dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to create child process"); 1159ec0f694cSTomoki Sekiyama return; 1160ec0f694cSTomoki Sekiyama } 1161ec0f694cSTomoki Sekiyama 1162ec0f694cSTomoki Sekiyama ga_wait_child(pid, &status, &local_err); 116384d18f06SMarkus Armbruster if (local_err) { 116477dbc81bSMarkus Armbruster error_propagate(errp, local_err); 1165ec0f694cSTomoki Sekiyama return; 1166ec0f694cSTomoki Sekiyama } 1167ec0f694cSTomoki Sekiyama 1168ec0f694cSTomoki Sekiyama if (!WIFEXITED(status)) { 116977dbc81bSMarkus Armbruster error_setg(errp, "fsfreeze hook has terminated abnormally"); 1170ec0f694cSTomoki Sekiyama return; 1171ec0f694cSTomoki Sekiyama } 1172ec0f694cSTomoki Sekiyama 1173ec0f694cSTomoki Sekiyama status = WEXITSTATUS(status); 1174ec0f694cSTomoki Sekiyama if (status) { 117577dbc81bSMarkus Armbruster error_setg(errp, "fsfreeze hook has failed with status %d", status); 1176ec0f694cSTomoki Sekiyama return; 1177ec0f694cSTomoki Sekiyama } 1178ec0f694cSTomoki Sekiyama } 1179ec0f694cSTomoki Sekiyama 1180c216e5adSMichael Roth /* 1181c216e5adSMichael Roth * Return status of freeze/thaw 1182c216e5adSMichael Roth */ 118377dbc81bSMarkus Armbruster GuestFsfreezeStatus qmp_guest_fsfreeze_status(Error **errp) 1184c216e5adSMichael Roth { 1185f22d85e9SMichael Roth if (ga_is_frozen(ga_state)) { 1186f22d85e9SMichael Roth return GUEST_FSFREEZE_STATUS_FROZEN; 1187f22d85e9SMichael Roth } 1188f22d85e9SMichael Roth 1189f22d85e9SMichael Roth return GUEST_FSFREEZE_STATUS_THAWED; 1190c216e5adSMichael Roth } 1191c216e5adSMichael Roth 1192e99bce20STomoki Sekiyama int64_t qmp_guest_fsfreeze_freeze(Error **errp) 1193e99bce20STomoki Sekiyama { 1194e99bce20STomoki Sekiyama return qmp_guest_fsfreeze_freeze_list(false, NULL, errp); 1195e99bce20STomoki Sekiyama } 1196e99bce20STomoki Sekiyama 1197c216e5adSMichael Roth /* 1198c216e5adSMichael Roth * Walk list of mounted file systems in the guest, and freeze the ones which 1199c216e5adSMichael Roth * are real local file systems. 1200c216e5adSMichael Roth */ 1201e99bce20STomoki Sekiyama int64_t qmp_guest_fsfreeze_freeze_list(bool has_mountpoints, 1202e99bce20STomoki Sekiyama strList *mountpoints, 1203e99bce20STomoki Sekiyama Error **errp) 1204c216e5adSMichael Roth { 1205c216e5adSMichael Roth int ret = 0, i = 0; 1206e99bce20STomoki Sekiyama strList *list; 1207af02203fSPaolo Bonzini FsMountList mounts; 1208af02203fSPaolo Bonzini struct FsMount *mount; 1209261551d1SLuiz Capitulino Error *local_err = NULL; 1210c216e5adSMichael Roth int fd; 1211c216e5adSMichael Roth 1212c216e5adSMichael Roth slog("guest-fsfreeze called"); 1213c216e5adSMichael Roth 1214ec0f694cSTomoki Sekiyama execute_fsfreeze_hook(FSFREEZE_HOOK_FREEZE, &local_err); 121584d18f06SMarkus Armbruster if (local_err) { 121677dbc81bSMarkus Armbruster error_propagate(errp, local_err); 1217ec0f694cSTomoki Sekiyama return -1; 1218ec0f694cSTomoki Sekiyama } 1219ec0f694cSTomoki Sekiyama 12209e8aded4SMichael Roth QTAILQ_INIT(&mounts); 1221261551d1SLuiz Capitulino build_fs_mount_list(&mounts, &local_err); 122284d18f06SMarkus Armbruster if (local_err) { 122377dbc81bSMarkus Armbruster error_propagate(errp, local_err); 1224261551d1SLuiz Capitulino return -1; 1225c216e5adSMichael Roth } 1226c216e5adSMichael Roth 1227c216e5adSMichael Roth /* cannot risk guest agent blocking itself on a write in this state */ 1228f22d85e9SMichael Roth ga_set_frozen(ga_state); 1229c216e5adSMichael Roth 1230e5d9adbdSTomoki Sekiyama QTAILQ_FOREACH_REVERSE(mount, &mounts, FsMountList, next) { 1231e99bce20STomoki Sekiyama /* To issue fsfreeze in the reverse order of mounts, check if the 1232e99bce20STomoki Sekiyama * mount is listed in the list here */ 1233e99bce20STomoki Sekiyama if (has_mountpoints) { 1234e99bce20STomoki Sekiyama for (list = mountpoints; list; list = list->next) { 1235e99bce20STomoki Sekiyama if (strcmp(list->value, mount->dirname) == 0) { 1236e99bce20STomoki Sekiyama break; 1237e99bce20STomoki Sekiyama } 1238e99bce20STomoki Sekiyama } 1239e99bce20STomoki Sekiyama if (!list) { 1240e99bce20STomoki Sekiyama continue; 1241e99bce20STomoki Sekiyama } 1242e99bce20STomoki Sekiyama } 1243e99bce20STomoki Sekiyama 1244c216e5adSMichael Roth fd = qemu_open(mount->dirname, O_RDONLY); 1245c216e5adSMichael Roth if (fd == -1) { 124677dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to open %s", mount->dirname); 1247c216e5adSMichael Roth goto error; 1248c216e5adSMichael Roth } 1249c216e5adSMichael Roth 1250e35916acSMichael Tokarev /* we try to cull filesystems we know won't work in advance, but other 1251e35916acSMichael Tokarev * filesystems may not implement fsfreeze for less obvious reasons. 12529e8aded4SMichael Roth * these will report EOPNOTSUPP. we simply ignore these when tallying 12539e8aded4SMichael Roth * the number of frozen filesystems. 1254ce2eb6c4SPeter Lieven * if a filesystem is mounted more than once (aka bind mount) a 1255ce2eb6c4SPeter Lieven * consecutive attempt to freeze an already frozen filesystem will 1256ce2eb6c4SPeter Lieven * return EBUSY. 12579e8aded4SMichael Roth * 12589e8aded4SMichael Roth * any other error means a failure to freeze a filesystem we 12599e8aded4SMichael Roth * expect to be freezable, so return an error in those cases 12609e8aded4SMichael Roth * and return system to thawed state. 1261c216e5adSMichael Roth */ 1262c216e5adSMichael Roth ret = ioctl(fd, FIFREEZE); 12639e8aded4SMichael Roth if (ret == -1) { 1264ce2eb6c4SPeter Lieven if (errno != EOPNOTSUPP && errno != EBUSY) { 126577dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to freeze %s", 1266617fbbc1SLuiz Capitulino mount->dirname); 1267c216e5adSMichael Roth close(fd); 1268c216e5adSMichael Roth goto error; 1269c216e5adSMichael Roth } 12709e8aded4SMichael Roth } else { 1271c216e5adSMichael Roth i++; 1272c216e5adSMichael Roth } 12739e8aded4SMichael Roth close(fd); 12749e8aded4SMichael Roth } 1275c216e5adSMichael Roth 1276af02203fSPaolo Bonzini free_fs_mount_list(&mounts); 1277c216e5adSMichael Roth return i; 1278c216e5adSMichael Roth 1279c216e5adSMichael Roth error: 1280af02203fSPaolo Bonzini free_fs_mount_list(&mounts); 1281c216e5adSMichael Roth qmp_guest_fsfreeze_thaw(NULL); 1282c216e5adSMichael Roth return 0; 1283c216e5adSMichael Roth } 1284c216e5adSMichael Roth 1285c216e5adSMichael Roth /* 1286c216e5adSMichael Roth * Walk list of frozen file systems in the guest, and thaw them. 1287c216e5adSMichael Roth */ 128877dbc81bSMarkus Armbruster int64_t qmp_guest_fsfreeze_thaw(Error **errp) 1289c216e5adSMichael Roth { 1290c216e5adSMichael Roth int ret; 1291af02203fSPaolo Bonzini FsMountList mounts; 1292af02203fSPaolo Bonzini FsMount *mount; 12939e8aded4SMichael Roth int fd, i = 0, logged; 1294261551d1SLuiz Capitulino Error *local_err = NULL; 1295c216e5adSMichael Roth 12969e8aded4SMichael Roth QTAILQ_INIT(&mounts); 1297261551d1SLuiz Capitulino build_fs_mount_list(&mounts, &local_err); 129884d18f06SMarkus Armbruster if (local_err) { 129977dbc81bSMarkus Armbruster error_propagate(errp, local_err); 13009e8aded4SMichael Roth return 0; 13019e8aded4SMichael Roth } 13029e8aded4SMichael Roth 13039e8aded4SMichael Roth QTAILQ_FOREACH(mount, &mounts, next) { 13049e8aded4SMichael Roth logged = false; 1305c216e5adSMichael Roth fd = qemu_open(mount->dirname, O_RDONLY); 1306c216e5adSMichael Roth if (fd == -1) { 1307c216e5adSMichael Roth continue; 1308c216e5adSMichael Roth } 13099e8aded4SMichael Roth /* we have no way of knowing whether a filesystem was actually unfrozen 13109e8aded4SMichael Roth * as a result of a successful call to FITHAW, only that if an error 13119e8aded4SMichael Roth * was returned the filesystem was *not* unfrozen by that particular 13129e8aded4SMichael Roth * call. 13139e8aded4SMichael Roth * 1314a31f0531SJim Meyering * since multiple preceding FIFREEZEs require multiple calls to FITHAW 13159e8aded4SMichael Roth * to unfreeze, continuing issuing FITHAW until an error is returned, 13169e8aded4SMichael Roth * in which case either the filesystem is in an unfreezable state, or, 13179e8aded4SMichael Roth * more likely, it was thawed previously (and remains so afterward). 13189e8aded4SMichael Roth * 13199e8aded4SMichael Roth * also, since the most recent successful call is the one that did 13209e8aded4SMichael Roth * the actual unfreeze, we can use this to provide an accurate count 13219e8aded4SMichael Roth * of the number of filesystems unfrozen by guest-fsfreeze-thaw, which 13229e8aded4SMichael Roth * may * be useful for determining whether a filesystem was unfrozen 13239e8aded4SMichael Roth * during the freeze/thaw phase by a process other than qemu-ga. 13249e8aded4SMichael Roth */ 13259e8aded4SMichael Roth do { 1326c216e5adSMichael Roth ret = ioctl(fd, FITHAW); 13279e8aded4SMichael Roth if (ret == 0 && !logged) { 1328c216e5adSMichael Roth i++; 13299e8aded4SMichael Roth logged = true; 13309e8aded4SMichael Roth } 13319e8aded4SMichael Roth } while (ret == 0); 13329e8aded4SMichael Roth close(fd); 1333c216e5adSMichael Roth } 1334c216e5adSMichael Roth 1335f22d85e9SMichael Roth ga_unset_frozen(ga_state); 1336af02203fSPaolo Bonzini free_fs_mount_list(&mounts); 1337ec0f694cSTomoki Sekiyama 133877dbc81bSMarkus Armbruster execute_fsfreeze_hook(FSFREEZE_HOOK_THAW, errp); 1339ec0f694cSTomoki Sekiyama 1340c216e5adSMichael Roth return i; 1341c216e5adSMichael Roth } 1342c216e5adSMichael Roth 1343c216e5adSMichael Roth static void guest_fsfreeze_cleanup(void) 1344c216e5adSMichael Roth { 1345c216e5adSMichael Roth Error *err = NULL; 1346c216e5adSMichael Roth 1347f22d85e9SMichael Roth if (ga_is_frozen(ga_state) == GUEST_FSFREEZE_STATUS_FROZEN) { 13486f686749SMarkus Armbruster qmp_guest_fsfreeze_thaw(&err); 13496f686749SMarkus Armbruster if (err) { 13506f686749SMarkus Armbruster slog("failed to clean up frozen filesystems: %s", 13516f686749SMarkus Armbruster error_get_pretty(err)); 13526f686749SMarkus Armbruster error_free(err); 1353c216e5adSMichael Roth } 1354c216e5adSMichael Roth } 1355c216e5adSMichael Roth } 1356e72c3f2eSMichael Roth #endif /* CONFIG_FSFREEZE */ 1357c216e5adSMichael Roth 1358eab5fd59SPaolo Bonzini #if defined(CONFIG_FSTRIM) 1359eab5fd59SPaolo Bonzini /* 1360eab5fd59SPaolo Bonzini * Walk list of mounted file systems in the guest, and trim them. 1361eab5fd59SPaolo Bonzini */ 1362e82855d9SJustin Ossevoort GuestFilesystemTrimResponse * 1363e82855d9SJustin Ossevoort qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **errp) 1364eab5fd59SPaolo Bonzini { 1365e82855d9SJustin Ossevoort GuestFilesystemTrimResponse *response; 1366e82855d9SJustin Ossevoort GuestFilesystemTrimResultList *list; 1367e82855d9SJustin Ossevoort GuestFilesystemTrimResult *result; 1368eab5fd59SPaolo Bonzini int ret = 0; 1369eab5fd59SPaolo Bonzini FsMountList mounts; 1370eab5fd59SPaolo Bonzini struct FsMount *mount; 1371eab5fd59SPaolo Bonzini int fd; 1372261551d1SLuiz Capitulino Error *local_err = NULL; 137373a652a1SJustin Ossevoort struct fstrim_range r; 1374eab5fd59SPaolo Bonzini 1375eab5fd59SPaolo Bonzini slog("guest-fstrim called"); 1376eab5fd59SPaolo Bonzini 1377eab5fd59SPaolo Bonzini QTAILQ_INIT(&mounts); 1378261551d1SLuiz Capitulino build_fs_mount_list(&mounts, &local_err); 137984d18f06SMarkus Armbruster if (local_err) { 138077dbc81bSMarkus Armbruster error_propagate(errp, local_err); 1381e82855d9SJustin Ossevoort return NULL; 1382eab5fd59SPaolo Bonzini } 1383eab5fd59SPaolo Bonzini 1384e82855d9SJustin Ossevoort response = g_malloc0(sizeof(*response)); 1385e82855d9SJustin Ossevoort 1386eab5fd59SPaolo Bonzini QTAILQ_FOREACH(mount, &mounts, next) { 1387e82855d9SJustin Ossevoort result = g_malloc0(sizeof(*result)); 1388e82855d9SJustin Ossevoort result->path = g_strdup(mount->dirname); 1389e82855d9SJustin Ossevoort 1390e82855d9SJustin Ossevoort list = g_malloc0(sizeof(*list)); 1391e82855d9SJustin Ossevoort list->value = result; 1392e82855d9SJustin Ossevoort list->next = response->paths; 1393e82855d9SJustin Ossevoort response->paths = list; 1394e82855d9SJustin Ossevoort 1395eab5fd59SPaolo Bonzini fd = qemu_open(mount->dirname, O_RDONLY); 1396eab5fd59SPaolo Bonzini if (fd == -1) { 1397e82855d9SJustin Ossevoort result->error = g_strdup_printf("failed to open: %s", 1398e82855d9SJustin Ossevoort strerror(errno)); 1399e82855d9SJustin Ossevoort result->has_error = true; 1400e82855d9SJustin Ossevoort continue; 1401eab5fd59SPaolo Bonzini } 1402eab5fd59SPaolo Bonzini 1403e35916acSMichael Tokarev /* We try to cull filesystems we know won't work in advance, but other 1404e35916acSMichael Tokarev * filesystems may not implement fstrim for less obvious reasons. 1405e35916acSMichael Tokarev * These will report EOPNOTSUPP; while in some other cases ENOTTY 1406e35916acSMichael Tokarev * will be reported (e.g. CD-ROMs). 1407e82855d9SJustin Ossevoort * Any other error means an unexpected error. 1408eab5fd59SPaolo Bonzini */ 140973a652a1SJustin Ossevoort r.start = 0; 141073a652a1SJustin Ossevoort r.len = -1; 141173a652a1SJustin Ossevoort r.minlen = has_minimum ? minimum : 0; 1412eab5fd59SPaolo Bonzini ret = ioctl(fd, FITRIM, &r); 1413eab5fd59SPaolo Bonzini if (ret == -1) { 1414e82855d9SJustin Ossevoort result->has_error = true; 1415e82855d9SJustin Ossevoort if (errno == ENOTTY || errno == EOPNOTSUPP) { 1416e82855d9SJustin Ossevoort result->error = g_strdup("trim not supported"); 1417e82855d9SJustin Ossevoort } else { 1418e82855d9SJustin Ossevoort result->error = g_strdup_printf("failed to trim: %s", 1419e82855d9SJustin Ossevoort strerror(errno)); 1420e82855d9SJustin Ossevoort } 1421eab5fd59SPaolo Bonzini close(fd); 1422e82855d9SJustin Ossevoort continue; 1423eab5fd59SPaolo Bonzini } 1424e82855d9SJustin Ossevoort 1425e82855d9SJustin Ossevoort result->has_minimum = true; 1426e82855d9SJustin Ossevoort result->minimum = r.minlen; 1427e82855d9SJustin Ossevoort result->has_trimmed = true; 1428e82855d9SJustin Ossevoort result->trimmed = r.len; 1429eab5fd59SPaolo Bonzini close(fd); 1430eab5fd59SPaolo Bonzini } 1431eab5fd59SPaolo Bonzini 1432eab5fd59SPaolo Bonzini free_fs_mount_list(&mounts); 1433e82855d9SJustin Ossevoort return response; 1434eab5fd59SPaolo Bonzini } 1435eab5fd59SPaolo Bonzini #endif /* CONFIG_FSTRIM */ 1436eab5fd59SPaolo Bonzini 1437eab5fd59SPaolo Bonzini 143811d0f125SLuiz Capitulino #define LINUX_SYS_STATE_FILE "/sys/power/state" 143911d0f125SLuiz Capitulino #define SUSPEND_SUPPORTED 0 144011d0f125SLuiz Capitulino #define SUSPEND_NOT_SUPPORTED 1 144111d0f125SLuiz Capitulino 144211d0f125SLuiz Capitulino static void bios_supports_mode(const char *pmutils_bin, const char *pmutils_arg, 144377dbc81bSMarkus Armbruster const char *sysfile_str, Error **errp) 144411d0f125SLuiz Capitulino { 14456b26e837SLuiz Capitulino Error *local_err = NULL; 144611d0f125SLuiz Capitulino char *pmutils_path; 14476b26e837SLuiz Capitulino pid_t pid; 1448dc8764f0SLuiz Capitulino int status; 144911d0f125SLuiz Capitulino 145011d0f125SLuiz Capitulino pmutils_path = g_find_program_in_path(pmutils_bin); 145111d0f125SLuiz Capitulino 145211d0f125SLuiz Capitulino pid = fork(); 145311d0f125SLuiz Capitulino if (!pid) { 1454dc8764f0SLuiz Capitulino char buf[32]; /* hopefully big enough */ 1455dc8764f0SLuiz Capitulino ssize_t ret; 1456dc8764f0SLuiz Capitulino int fd; 145711d0f125SLuiz Capitulino 145811d0f125SLuiz Capitulino setsid(); 145911d0f125SLuiz Capitulino reopen_fd_to_null(0); 146011d0f125SLuiz Capitulino reopen_fd_to_null(1); 146111d0f125SLuiz Capitulino reopen_fd_to_null(2); 146211d0f125SLuiz Capitulino 146311d0f125SLuiz Capitulino if (pmutils_path) { 146411d0f125SLuiz Capitulino execle(pmutils_path, pmutils_bin, pmutils_arg, NULL, environ); 146511d0f125SLuiz Capitulino } 146611d0f125SLuiz Capitulino 146711d0f125SLuiz Capitulino /* 146811d0f125SLuiz Capitulino * If we get here either pm-utils is not installed or execle() has 146911d0f125SLuiz Capitulino * failed. Let's try the manual method if the caller wants it. 147011d0f125SLuiz Capitulino */ 147111d0f125SLuiz Capitulino 147211d0f125SLuiz Capitulino if (!sysfile_str) { 147311d0f125SLuiz Capitulino _exit(SUSPEND_NOT_SUPPORTED); 147411d0f125SLuiz Capitulino } 147511d0f125SLuiz Capitulino 147611d0f125SLuiz Capitulino fd = open(LINUX_SYS_STATE_FILE, O_RDONLY); 147711d0f125SLuiz Capitulino if (fd < 0) { 147811d0f125SLuiz Capitulino _exit(SUSPEND_NOT_SUPPORTED); 147911d0f125SLuiz Capitulino } 148011d0f125SLuiz Capitulino 148111d0f125SLuiz Capitulino ret = read(fd, buf, sizeof(buf)-1); 148211d0f125SLuiz Capitulino if (ret <= 0) { 148311d0f125SLuiz Capitulino _exit(SUSPEND_NOT_SUPPORTED); 148411d0f125SLuiz Capitulino } 148511d0f125SLuiz Capitulino buf[ret] = '\0'; 148611d0f125SLuiz Capitulino 148711d0f125SLuiz Capitulino if (strstr(buf, sysfile_str)) { 148811d0f125SLuiz Capitulino _exit(SUSPEND_SUPPORTED); 148911d0f125SLuiz Capitulino } 149011d0f125SLuiz Capitulino 149111d0f125SLuiz Capitulino _exit(SUSPEND_NOT_SUPPORTED); 14926b26e837SLuiz Capitulino } else if (pid < 0) { 149377dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to create child process"); 14946b26e837SLuiz Capitulino goto out; 149511d0f125SLuiz Capitulino } 149611d0f125SLuiz Capitulino 14976b26e837SLuiz Capitulino ga_wait_child(pid, &status, &local_err); 149884d18f06SMarkus Armbruster if (local_err) { 149977dbc81bSMarkus Armbruster error_propagate(errp, local_err); 15006b26e837SLuiz Capitulino goto out; 150111d0f125SLuiz Capitulino } 150211d0f125SLuiz Capitulino 15036b26e837SLuiz Capitulino if (!WIFEXITED(status)) { 150477dbc81bSMarkus Armbruster error_setg(errp, "child process has terminated abnormally"); 15056b26e837SLuiz Capitulino goto out; 15066b26e837SLuiz Capitulino } 15076b26e837SLuiz Capitulino 1508dc8764f0SLuiz Capitulino switch (WEXITSTATUS(status)) { 1509dc8764f0SLuiz Capitulino case SUSPEND_SUPPORTED: 15106b26e837SLuiz Capitulino goto out; 1511dc8764f0SLuiz Capitulino case SUSPEND_NOT_SUPPORTED: 151277dbc81bSMarkus Armbruster error_setg(errp, 15136b26e837SLuiz Capitulino "the requested suspend mode is not supported by the guest"); 15146b26e837SLuiz Capitulino goto out; 1515dc8764f0SLuiz Capitulino default: 151677dbc81bSMarkus Armbruster error_setg(errp, 15176b26e837SLuiz Capitulino "the helper program '%s' returned an unexpected exit status" 15186b26e837SLuiz Capitulino " code (%d)", pmutils_path, WEXITSTATUS(status)); 15196b26e837SLuiz Capitulino goto out; 1520dc8764f0SLuiz Capitulino } 152111d0f125SLuiz Capitulino 15226b26e837SLuiz Capitulino out: 15236b26e837SLuiz Capitulino g_free(pmutils_path); 152411d0f125SLuiz Capitulino } 152511d0f125SLuiz Capitulino 152611d0f125SLuiz Capitulino static void guest_suspend(const char *pmutils_bin, const char *sysfile_str, 152777dbc81bSMarkus Armbruster Error **errp) 152811d0f125SLuiz Capitulino { 15297b376087SLuiz Capitulino Error *local_err = NULL; 153011d0f125SLuiz Capitulino char *pmutils_path; 15317b376087SLuiz Capitulino pid_t pid; 1532dc8764f0SLuiz Capitulino int status; 153311d0f125SLuiz Capitulino 153411d0f125SLuiz Capitulino pmutils_path = g_find_program_in_path(pmutils_bin); 153511d0f125SLuiz Capitulino 153611d0f125SLuiz Capitulino pid = fork(); 153711d0f125SLuiz Capitulino if (pid == 0) { 153811d0f125SLuiz Capitulino /* child */ 153911d0f125SLuiz Capitulino int fd; 154011d0f125SLuiz Capitulino 154111d0f125SLuiz Capitulino setsid(); 154211d0f125SLuiz Capitulino reopen_fd_to_null(0); 154311d0f125SLuiz Capitulino reopen_fd_to_null(1); 154411d0f125SLuiz Capitulino reopen_fd_to_null(2); 154511d0f125SLuiz Capitulino 154611d0f125SLuiz Capitulino if (pmutils_path) { 154711d0f125SLuiz Capitulino execle(pmutils_path, pmutils_bin, NULL, environ); 154811d0f125SLuiz Capitulino } 154911d0f125SLuiz Capitulino 155011d0f125SLuiz Capitulino /* 155111d0f125SLuiz Capitulino * If we get here either pm-utils is not installed or execle() has 155211d0f125SLuiz Capitulino * failed. Let's try the manual method if the caller wants it. 155311d0f125SLuiz Capitulino */ 155411d0f125SLuiz Capitulino 155511d0f125SLuiz Capitulino if (!sysfile_str) { 155611d0f125SLuiz Capitulino _exit(EXIT_FAILURE); 155711d0f125SLuiz Capitulino } 155811d0f125SLuiz Capitulino 155911d0f125SLuiz Capitulino fd = open(LINUX_SYS_STATE_FILE, O_WRONLY); 156011d0f125SLuiz Capitulino if (fd < 0) { 156111d0f125SLuiz Capitulino _exit(EXIT_FAILURE); 156211d0f125SLuiz Capitulino } 156311d0f125SLuiz Capitulino 156411d0f125SLuiz Capitulino if (write(fd, sysfile_str, strlen(sysfile_str)) < 0) { 156511d0f125SLuiz Capitulino _exit(EXIT_FAILURE); 156611d0f125SLuiz Capitulino } 156711d0f125SLuiz Capitulino 156811d0f125SLuiz Capitulino _exit(EXIT_SUCCESS); 15697b376087SLuiz Capitulino } else if (pid < 0) { 157077dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to create child process"); 15717b376087SLuiz Capitulino goto out; 157211d0f125SLuiz Capitulino } 157311d0f125SLuiz Capitulino 15747b376087SLuiz Capitulino ga_wait_child(pid, &status, &local_err); 157584d18f06SMarkus Armbruster if (local_err) { 157677dbc81bSMarkus Armbruster error_propagate(errp, local_err); 15777b376087SLuiz Capitulino goto out; 15787b376087SLuiz Capitulino } 15797b376087SLuiz Capitulino 15807b376087SLuiz Capitulino if (!WIFEXITED(status)) { 158177dbc81bSMarkus Armbruster error_setg(errp, "child process has terminated abnormally"); 15827b376087SLuiz Capitulino goto out; 15837b376087SLuiz Capitulino } 15847b376087SLuiz Capitulino 15857b376087SLuiz Capitulino if (WEXITSTATUS(status)) { 158677dbc81bSMarkus Armbruster error_setg(errp, "child process has failed to suspend"); 15877b376087SLuiz Capitulino goto out; 15887b376087SLuiz Capitulino } 15897b376087SLuiz Capitulino 15907b376087SLuiz Capitulino out: 159111d0f125SLuiz Capitulino g_free(pmutils_path); 159211d0f125SLuiz Capitulino } 159311d0f125SLuiz Capitulino 159477dbc81bSMarkus Armbruster void qmp_guest_suspend_disk(Error **errp) 159511d0f125SLuiz Capitulino { 15960f230bf7SMarkus Armbruster Error *local_err = NULL; 15970f230bf7SMarkus Armbruster 15980f230bf7SMarkus Armbruster bios_supports_mode("pm-is-supported", "--hibernate", "disk", &local_err); 15990f230bf7SMarkus Armbruster if (local_err) { 16000f230bf7SMarkus Armbruster error_propagate(errp, local_err); 160111d0f125SLuiz Capitulino return; 160211d0f125SLuiz Capitulino } 160311d0f125SLuiz Capitulino 160477dbc81bSMarkus Armbruster guest_suspend("pm-hibernate", "disk", errp); 160511d0f125SLuiz Capitulino } 160611d0f125SLuiz Capitulino 160777dbc81bSMarkus Armbruster void qmp_guest_suspend_ram(Error **errp) 1608fbf42210SLuiz Capitulino { 16090f230bf7SMarkus Armbruster Error *local_err = NULL; 16100f230bf7SMarkus Armbruster 16110f230bf7SMarkus Armbruster bios_supports_mode("pm-is-supported", "--suspend", "mem", &local_err); 16120f230bf7SMarkus Armbruster if (local_err) { 16130f230bf7SMarkus Armbruster error_propagate(errp, local_err); 1614fbf42210SLuiz Capitulino return; 1615fbf42210SLuiz Capitulino } 1616fbf42210SLuiz Capitulino 161777dbc81bSMarkus Armbruster guest_suspend("pm-suspend", "mem", errp); 1618fbf42210SLuiz Capitulino } 1619fbf42210SLuiz Capitulino 162077dbc81bSMarkus Armbruster void qmp_guest_suspend_hybrid(Error **errp) 162195f4f404SLuiz Capitulino { 16220f230bf7SMarkus Armbruster Error *local_err = NULL; 16230f230bf7SMarkus Armbruster 16240f230bf7SMarkus Armbruster bios_supports_mode("pm-is-supported", "--suspend-hybrid", NULL, 16250f230bf7SMarkus Armbruster &local_err); 16260f230bf7SMarkus Armbruster if (local_err) { 16270f230bf7SMarkus Armbruster error_propagate(errp, local_err); 162895f4f404SLuiz Capitulino return; 162995f4f404SLuiz Capitulino } 163095f4f404SLuiz Capitulino 163177dbc81bSMarkus Armbruster guest_suspend("pm-suspend-hybrid", NULL, errp); 163295f4f404SLuiz Capitulino } 163395f4f404SLuiz Capitulino 16343424fc9fSMichal Privoznik static GuestNetworkInterfaceList * 16353424fc9fSMichal Privoznik guest_find_interface(GuestNetworkInterfaceList *head, 16363424fc9fSMichal Privoznik const char *name) 16373424fc9fSMichal Privoznik { 16383424fc9fSMichal Privoznik for (; head; head = head->next) { 16393424fc9fSMichal Privoznik if (strcmp(head->value->name, name) == 0) { 16403424fc9fSMichal Privoznik break; 16413424fc9fSMichal Privoznik } 16423424fc9fSMichal Privoznik } 16433424fc9fSMichal Privoznik 16443424fc9fSMichal Privoznik return head; 16453424fc9fSMichal Privoznik } 16463424fc9fSMichal Privoznik 164753f9fcb2SZhiPeng Lu static int guest_get_network_stats(const char *name, 164853f9fcb2SZhiPeng Lu GuestNetworkInterfaceStat *stats) 164953f9fcb2SZhiPeng Lu { 165053f9fcb2SZhiPeng Lu int name_len; 165153f9fcb2SZhiPeng Lu char const *devinfo = "/proc/net/dev"; 165253f9fcb2SZhiPeng Lu FILE *fp; 165353f9fcb2SZhiPeng Lu char *line = NULL, *colon; 165453f9fcb2SZhiPeng Lu size_t n = 0; 165553f9fcb2SZhiPeng Lu fp = fopen(devinfo, "r"); 165653f9fcb2SZhiPeng Lu if (!fp) { 165753f9fcb2SZhiPeng Lu return -1; 165853f9fcb2SZhiPeng Lu } 165953f9fcb2SZhiPeng Lu name_len = strlen(name); 166053f9fcb2SZhiPeng Lu while (getline(&line, &n, fp) != -1) { 166153f9fcb2SZhiPeng Lu long long dummy; 166253f9fcb2SZhiPeng Lu long long rx_bytes; 166353f9fcb2SZhiPeng Lu long long rx_packets; 166453f9fcb2SZhiPeng Lu long long rx_errs; 166553f9fcb2SZhiPeng Lu long long rx_dropped; 166653f9fcb2SZhiPeng Lu long long tx_bytes; 166753f9fcb2SZhiPeng Lu long long tx_packets; 166853f9fcb2SZhiPeng Lu long long tx_errs; 166953f9fcb2SZhiPeng Lu long long tx_dropped; 167053f9fcb2SZhiPeng Lu char *trim_line; 167153f9fcb2SZhiPeng Lu trim_line = g_strchug(line); 167253f9fcb2SZhiPeng Lu if (trim_line[0] == '\0') { 167353f9fcb2SZhiPeng Lu continue; 167453f9fcb2SZhiPeng Lu } 167553f9fcb2SZhiPeng Lu colon = strchr(trim_line, ':'); 167653f9fcb2SZhiPeng Lu if (!colon) { 167753f9fcb2SZhiPeng Lu continue; 167853f9fcb2SZhiPeng Lu } 167953f9fcb2SZhiPeng Lu if (colon - name_len == trim_line && 168053f9fcb2SZhiPeng Lu strncmp(trim_line, name, name_len) == 0) { 168153f9fcb2SZhiPeng Lu if (sscanf(colon + 1, 168253f9fcb2SZhiPeng Lu "%lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld", 168353f9fcb2SZhiPeng Lu &rx_bytes, &rx_packets, &rx_errs, &rx_dropped, 168453f9fcb2SZhiPeng Lu &dummy, &dummy, &dummy, &dummy, 168553f9fcb2SZhiPeng Lu &tx_bytes, &tx_packets, &tx_errs, &tx_dropped, 168653f9fcb2SZhiPeng Lu &dummy, &dummy, &dummy, &dummy) != 16) { 168753f9fcb2SZhiPeng Lu continue; 168853f9fcb2SZhiPeng Lu } 168953f9fcb2SZhiPeng Lu stats->rx_bytes = rx_bytes; 169053f9fcb2SZhiPeng Lu stats->rx_packets = rx_packets; 169153f9fcb2SZhiPeng Lu stats->rx_errs = rx_errs; 169253f9fcb2SZhiPeng Lu stats->rx_dropped = rx_dropped; 169353f9fcb2SZhiPeng Lu stats->tx_bytes = tx_bytes; 169453f9fcb2SZhiPeng Lu stats->tx_packets = tx_packets; 169553f9fcb2SZhiPeng Lu stats->tx_errs = tx_errs; 169653f9fcb2SZhiPeng Lu stats->tx_dropped = tx_dropped; 169753f9fcb2SZhiPeng Lu fclose(fp); 169853f9fcb2SZhiPeng Lu g_free(line); 169953f9fcb2SZhiPeng Lu return 0; 170053f9fcb2SZhiPeng Lu } 170153f9fcb2SZhiPeng Lu } 170253f9fcb2SZhiPeng Lu fclose(fp); 170353f9fcb2SZhiPeng Lu g_free(line); 170453f9fcb2SZhiPeng Lu g_debug("/proc/net/dev: Interface '%s' not found", name); 170553f9fcb2SZhiPeng Lu return -1; 170653f9fcb2SZhiPeng Lu } 170753f9fcb2SZhiPeng Lu 17083424fc9fSMichal Privoznik /* 17093424fc9fSMichal Privoznik * Build information about guest interfaces 17103424fc9fSMichal Privoznik */ 17113424fc9fSMichal Privoznik GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp) 17123424fc9fSMichal Privoznik { 17133424fc9fSMichal Privoznik GuestNetworkInterfaceList *head = NULL, *cur_item = NULL; 17143424fc9fSMichal Privoznik struct ifaddrs *ifap, *ifa; 17153424fc9fSMichal Privoznik 17163424fc9fSMichal Privoznik if (getifaddrs(&ifap) < 0) { 1717878a0ae0SLuiz Capitulino error_setg_errno(errp, errno, "getifaddrs failed"); 17183424fc9fSMichal Privoznik goto error; 17193424fc9fSMichal Privoznik } 17203424fc9fSMichal Privoznik 17213424fc9fSMichal Privoznik for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 17223424fc9fSMichal Privoznik GuestNetworkInterfaceList *info; 17233424fc9fSMichal Privoznik GuestIpAddressList **address_list = NULL, *address_item = NULL; 172453f9fcb2SZhiPeng Lu GuestNetworkInterfaceStat *interface_stat = NULL; 17253424fc9fSMichal Privoznik char addr4[INET_ADDRSTRLEN]; 17263424fc9fSMichal Privoznik char addr6[INET6_ADDRSTRLEN]; 17273424fc9fSMichal Privoznik int sock; 17283424fc9fSMichal Privoznik struct ifreq ifr; 17293424fc9fSMichal Privoznik unsigned char *mac_addr; 17303424fc9fSMichal Privoznik void *p; 17313424fc9fSMichal Privoznik 17323424fc9fSMichal Privoznik g_debug("Processing %s interface", ifa->ifa_name); 17333424fc9fSMichal Privoznik 17343424fc9fSMichal Privoznik info = guest_find_interface(head, ifa->ifa_name); 17353424fc9fSMichal Privoznik 17363424fc9fSMichal Privoznik if (!info) { 17373424fc9fSMichal Privoznik info = g_malloc0(sizeof(*info)); 17383424fc9fSMichal Privoznik info->value = g_malloc0(sizeof(*info->value)); 17393424fc9fSMichal Privoznik info->value->name = g_strdup(ifa->ifa_name); 17403424fc9fSMichal Privoznik 17413424fc9fSMichal Privoznik if (!cur_item) { 17423424fc9fSMichal Privoznik head = cur_item = info; 17433424fc9fSMichal Privoznik } else { 17443424fc9fSMichal Privoznik cur_item->next = info; 17453424fc9fSMichal Privoznik cur_item = info; 17463424fc9fSMichal Privoznik } 17473424fc9fSMichal Privoznik } 17483424fc9fSMichal Privoznik 17493424fc9fSMichal Privoznik if (!info->value->has_hardware_address && 17503424fc9fSMichal Privoznik ifa->ifa_flags & SIOCGIFHWADDR) { 17513424fc9fSMichal Privoznik /* we haven't obtained HW address yet */ 17523424fc9fSMichal Privoznik sock = socket(PF_INET, SOCK_STREAM, 0); 17533424fc9fSMichal Privoznik if (sock == -1) { 1754878a0ae0SLuiz Capitulino error_setg_errno(errp, errno, "failed to create socket"); 17553424fc9fSMichal Privoznik goto error; 17563424fc9fSMichal Privoznik } 17573424fc9fSMichal Privoznik 17583424fc9fSMichal Privoznik memset(&ifr, 0, sizeof(ifr)); 17591ab516edSJim Meyering pstrcpy(ifr.ifr_name, IF_NAMESIZE, info->value->name); 17603424fc9fSMichal Privoznik if (ioctl(sock, SIOCGIFHWADDR, &ifr) == -1) { 1761878a0ae0SLuiz Capitulino error_setg_errno(errp, errno, 1762878a0ae0SLuiz Capitulino "failed to get MAC address of %s", 1763878a0ae0SLuiz Capitulino ifa->ifa_name); 176410a2158fSMarkus Armbruster close(sock); 17653424fc9fSMichal Privoznik goto error; 17663424fc9fSMichal Privoznik } 17673424fc9fSMichal Privoznik 176810a2158fSMarkus Armbruster close(sock); 17693424fc9fSMichal Privoznik mac_addr = (unsigned char *) &ifr.ifr_hwaddr.sa_data; 17703424fc9fSMichal Privoznik 1771e4ada482SStefan Weil info->value->hardware_address = 1772e4ada482SStefan Weil g_strdup_printf("%02x:%02x:%02x:%02x:%02x:%02x", 17733424fc9fSMichal Privoznik (int) mac_addr[0], (int) mac_addr[1], 17743424fc9fSMichal Privoznik (int) mac_addr[2], (int) mac_addr[3], 1775e4ada482SStefan Weil (int) mac_addr[4], (int) mac_addr[5]); 17763424fc9fSMichal Privoznik 17773424fc9fSMichal Privoznik info->value->has_hardware_address = true; 17783424fc9fSMichal Privoznik } 17793424fc9fSMichal Privoznik 17803424fc9fSMichal Privoznik if (ifa->ifa_addr && 17813424fc9fSMichal Privoznik ifa->ifa_addr->sa_family == AF_INET) { 17823424fc9fSMichal Privoznik /* interface with IPv4 address */ 17833424fc9fSMichal Privoznik p = &((struct sockaddr_in *)ifa->ifa_addr)->sin_addr; 17843424fc9fSMichal Privoznik if (!inet_ntop(AF_INET, p, addr4, sizeof(addr4))) { 1785878a0ae0SLuiz Capitulino error_setg_errno(errp, errno, "inet_ntop failed"); 17863424fc9fSMichal Privoznik goto error; 17873424fc9fSMichal Privoznik } 17883424fc9fSMichal Privoznik 178910a2158fSMarkus Armbruster address_item = g_malloc0(sizeof(*address_item)); 179010a2158fSMarkus Armbruster address_item->value = g_malloc0(sizeof(*address_item->value)); 17913424fc9fSMichal Privoznik address_item->value->ip_address = g_strdup(addr4); 17923424fc9fSMichal Privoznik address_item->value->ip_address_type = GUEST_IP_ADDRESS_TYPE_IPV4; 17933424fc9fSMichal Privoznik 17943424fc9fSMichal Privoznik if (ifa->ifa_netmask) { 17953424fc9fSMichal Privoznik /* Count the number of set bits in netmask. 17963424fc9fSMichal Privoznik * This is safe as '1' and '0' cannot be shuffled in netmask. */ 17973424fc9fSMichal Privoznik p = &((struct sockaddr_in *)ifa->ifa_netmask)->sin_addr; 17983424fc9fSMichal Privoznik address_item->value->prefix = ctpop32(((uint32_t *) p)[0]); 17993424fc9fSMichal Privoznik } 18003424fc9fSMichal Privoznik } else if (ifa->ifa_addr && 18013424fc9fSMichal Privoznik ifa->ifa_addr->sa_family == AF_INET6) { 18023424fc9fSMichal Privoznik /* interface with IPv6 address */ 18033424fc9fSMichal Privoznik p = &((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_addr; 18043424fc9fSMichal Privoznik if (!inet_ntop(AF_INET6, p, addr6, sizeof(addr6))) { 1805878a0ae0SLuiz Capitulino error_setg_errno(errp, errno, "inet_ntop failed"); 18063424fc9fSMichal Privoznik goto error; 18073424fc9fSMichal Privoznik } 18083424fc9fSMichal Privoznik 180910a2158fSMarkus Armbruster address_item = g_malloc0(sizeof(*address_item)); 181010a2158fSMarkus Armbruster address_item->value = g_malloc0(sizeof(*address_item->value)); 18113424fc9fSMichal Privoznik address_item->value->ip_address = g_strdup(addr6); 18123424fc9fSMichal Privoznik address_item->value->ip_address_type = GUEST_IP_ADDRESS_TYPE_IPV6; 18133424fc9fSMichal Privoznik 18143424fc9fSMichal Privoznik if (ifa->ifa_netmask) { 18153424fc9fSMichal Privoznik /* Count the number of set bits in netmask. 18163424fc9fSMichal Privoznik * This is safe as '1' and '0' cannot be shuffled in netmask. */ 18173424fc9fSMichal Privoznik p = &((struct sockaddr_in6 *)ifa->ifa_netmask)->sin6_addr; 18183424fc9fSMichal Privoznik address_item->value->prefix = 18193424fc9fSMichal Privoznik ctpop32(((uint32_t *) p)[0]) + 18203424fc9fSMichal Privoznik ctpop32(((uint32_t *) p)[1]) + 18213424fc9fSMichal Privoznik ctpop32(((uint32_t *) p)[2]) + 18223424fc9fSMichal Privoznik ctpop32(((uint32_t *) p)[3]); 18233424fc9fSMichal Privoznik } 18243424fc9fSMichal Privoznik } 18253424fc9fSMichal Privoznik 18263424fc9fSMichal Privoznik if (!address_item) { 18273424fc9fSMichal Privoznik continue; 18283424fc9fSMichal Privoznik } 18293424fc9fSMichal Privoznik 18303424fc9fSMichal Privoznik address_list = &info->value->ip_addresses; 18313424fc9fSMichal Privoznik 18323424fc9fSMichal Privoznik while (*address_list && (*address_list)->next) { 18333424fc9fSMichal Privoznik address_list = &(*address_list)->next; 18343424fc9fSMichal Privoznik } 18353424fc9fSMichal Privoznik 18363424fc9fSMichal Privoznik if (!*address_list) { 18373424fc9fSMichal Privoznik *address_list = address_item; 18383424fc9fSMichal Privoznik } else { 18393424fc9fSMichal Privoznik (*address_list)->next = address_item; 18403424fc9fSMichal Privoznik } 18413424fc9fSMichal Privoznik 18423424fc9fSMichal Privoznik info->value->has_ip_addresses = true; 18433424fc9fSMichal Privoznik 184453f9fcb2SZhiPeng Lu if (!info->value->has_statistics) { 184553f9fcb2SZhiPeng Lu interface_stat = g_malloc0(sizeof(*interface_stat)); 184653f9fcb2SZhiPeng Lu if (guest_get_network_stats(info->value->name, 184753f9fcb2SZhiPeng Lu interface_stat) == -1) { 184853f9fcb2SZhiPeng Lu info->value->has_statistics = false; 184953f9fcb2SZhiPeng Lu g_free(interface_stat); 185053f9fcb2SZhiPeng Lu } else { 185153f9fcb2SZhiPeng Lu info->value->statistics = interface_stat; 185253f9fcb2SZhiPeng Lu info->value->has_statistics = true; 185353f9fcb2SZhiPeng Lu } 185453f9fcb2SZhiPeng Lu } 18553424fc9fSMichal Privoznik } 18563424fc9fSMichal Privoznik 18573424fc9fSMichal Privoznik freeifaddrs(ifap); 18583424fc9fSMichal Privoznik return head; 18593424fc9fSMichal Privoznik 18603424fc9fSMichal Privoznik error: 18613424fc9fSMichal Privoznik freeifaddrs(ifap); 18623424fc9fSMichal Privoznik qapi_free_GuestNetworkInterfaceList(head); 18633424fc9fSMichal Privoznik return NULL; 18643424fc9fSMichal Privoznik } 18653424fc9fSMichal Privoznik 186677dbc81bSMarkus Armbruster #define SYSCONF_EXACT(name, errp) sysconf_exact((name), #name, (errp)) 1867d2baff62SLaszlo Ersek 186877dbc81bSMarkus Armbruster static long sysconf_exact(int name, const char *name_str, Error **errp) 1869d2baff62SLaszlo Ersek { 1870d2baff62SLaszlo Ersek long ret; 1871d2baff62SLaszlo Ersek 1872d2baff62SLaszlo Ersek errno = 0; 1873d2baff62SLaszlo Ersek ret = sysconf(name); 1874d2baff62SLaszlo Ersek if (ret == -1) { 1875d2baff62SLaszlo Ersek if (errno == 0) { 187677dbc81bSMarkus Armbruster error_setg(errp, "sysconf(%s): value indefinite", name_str); 1877d2baff62SLaszlo Ersek } else { 187877dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "sysconf(%s)", name_str); 1879d2baff62SLaszlo Ersek } 1880d2baff62SLaszlo Ersek } 1881d2baff62SLaszlo Ersek return ret; 1882d2baff62SLaszlo Ersek } 1883d2baff62SLaszlo Ersek 1884d2baff62SLaszlo Ersek /* Transfer online/offline status between @vcpu and the guest system. 1885d2baff62SLaszlo Ersek * 1886d2baff62SLaszlo Ersek * On input either @errp or *@errp must be NULL. 1887d2baff62SLaszlo Ersek * 1888d2baff62SLaszlo Ersek * In system-to-@vcpu direction, the following @vcpu fields are accessed: 1889d2baff62SLaszlo Ersek * - R: vcpu->logical_id 1890d2baff62SLaszlo Ersek * - W: vcpu->online 1891d2baff62SLaszlo Ersek * - W: vcpu->can_offline 1892d2baff62SLaszlo Ersek * 1893d2baff62SLaszlo Ersek * In @vcpu-to-system direction, the following @vcpu fields are accessed: 1894d2baff62SLaszlo Ersek * - R: vcpu->logical_id 1895d2baff62SLaszlo Ersek * - R: vcpu->online 1896d2baff62SLaszlo Ersek * 1897d2baff62SLaszlo Ersek * Written members remain unmodified on error. 1898d2baff62SLaszlo Ersek */ 1899d2baff62SLaszlo Ersek static void transfer_vcpu(GuestLogicalProcessor *vcpu, bool sys2vcpu, 1900d2baff62SLaszlo Ersek Error **errp) 1901d2baff62SLaszlo Ersek { 1902d2baff62SLaszlo Ersek char *dirpath; 1903d2baff62SLaszlo Ersek int dirfd; 1904d2baff62SLaszlo Ersek 1905d2baff62SLaszlo Ersek dirpath = g_strdup_printf("/sys/devices/system/cpu/cpu%" PRId64 "/", 1906d2baff62SLaszlo Ersek vcpu->logical_id); 1907d2baff62SLaszlo Ersek dirfd = open(dirpath, O_RDONLY | O_DIRECTORY); 1908d2baff62SLaszlo Ersek if (dirfd == -1) { 1909d2baff62SLaszlo Ersek error_setg_errno(errp, errno, "open(\"%s\")", dirpath); 1910d2baff62SLaszlo Ersek } else { 1911d2baff62SLaszlo Ersek static const char fn[] = "online"; 1912d2baff62SLaszlo Ersek int fd; 1913d2baff62SLaszlo Ersek int res; 1914d2baff62SLaszlo Ersek 1915d2baff62SLaszlo Ersek fd = openat(dirfd, fn, sys2vcpu ? O_RDONLY : O_RDWR); 1916d2baff62SLaszlo Ersek if (fd == -1) { 1917d2baff62SLaszlo Ersek if (errno != ENOENT) { 1918d2baff62SLaszlo Ersek error_setg_errno(errp, errno, "open(\"%s/%s\")", dirpath, fn); 1919d2baff62SLaszlo Ersek } else if (sys2vcpu) { 1920d2baff62SLaszlo Ersek vcpu->online = true; 1921d2baff62SLaszlo Ersek vcpu->can_offline = false; 1922d2baff62SLaszlo Ersek } else if (!vcpu->online) { 1923d2baff62SLaszlo Ersek error_setg(errp, "logical processor #%" PRId64 " can't be " 1924d2baff62SLaszlo Ersek "offlined", vcpu->logical_id); 1925d2baff62SLaszlo Ersek } /* otherwise pretend successful re-onlining */ 1926d2baff62SLaszlo Ersek } else { 1927d2baff62SLaszlo Ersek unsigned char status; 1928d2baff62SLaszlo Ersek 1929d2baff62SLaszlo Ersek res = pread(fd, &status, 1, 0); 1930d2baff62SLaszlo Ersek if (res == -1) { 1931d2baff62SLaszlo Ersek error_setg_errno(errp, errno, "pread(\"%s/%s\")", dirpath, fn); 1932d2baff62SLaszlo Ersek } else if (res == 0) { 1933d2baff62SLaszlo Ersek error_setg(errp, "pread(\"%s/%s\"): unexpected EOF", dirpath, 1934d2baff62SLaszlo Ersek fn); 1935d2baff62SLaszlo Ersek } else if (sys2vcpu) { 1936d2baff62SLaszlo Ersek vcpu->online = (status != '0'); 1937d2baff62SLaszlo Ersek vcpu->can_offline = true; 1938d2baff62SLaszlo Ersek } else if (vcpu->online != (status != '0')) { 1939d2baff62SLaszlo Ersek status = '0' + vcpu->online; 1940d2baff62SLaszlo Ersek if (pwrite(fd, &status, 1, 0) == -1) { 1941d2baff62SLaszlo Ersek error_setg_errno(errp, errno, "pwrite(\"%s/%s\")", dirpath, 1942d2baff62SLaszlo Ersek fn); 1943d2baff62SLaszlo Ersek } 1944d2baff62SLaszlo Ersek } /* otherwise pretend successful re-(on|off)-lining */ 1945d2baff62SLaszlo Ersek 1946d2baff62SLaszlo Ersek res = close(fd); 1947d2baff62SLaszlo Ersek g_assert(res == 0); 1948d2baff62SLaszlo Ersek } 1949d2baff62SLaszlo Ersek 1950d2baff62SLaszlo Ersek res = close(dirfd); 1951d2baff62SLaszlo Ersek g_assert(res == 0); 1952d2baff62SLaszlo Ersek } 1953d2baff62SLaszlo Ersek 1954d2baff62SLaszlo Ersek g_free(dirpath); 1955d2baff62SLaszlo Ersek } 1956d2baff62SLaszlo Ersek 1957d2baff62SLaszlo Ersek GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp) 1958d2baff62SLaszlo Ersek { 1959d2baff62SLaszlo Ersek int64_t current; 1960d2baff62SLaszlo Ersek GuestLogicalProcessorList *head, **link; 1961d2baff62SLaszlo Ersek long sc_max; 1962d2baff62SLaszlo Ersek Error *local_err = NULL; 1963d2baff62SLaszlo Ersek 1964d2baff62SLaszlo Ersek current = 0; 1965d2baff62SLaszlo Ersek head = NULL; 1966d2baff62SLaszlo Ersek link = &head; 1967d2baff62SLaszlo Ersek sc_max = SYSCONF_EXACT(_SC_NPROCESSORS_CONF, &local_err); 1968d2baff62SLaszlo Ersek 1969d2baff62SLaszlo Ersek while (local_err == NULL && current < sc_max) { 1970d2baff62SLaszlo Ersek GuestLogicalProcessor *vcpu; 1971d2baff62SLaszlo Ersek GuestLogicalProcessorList *entry; 1972d2baff62SLaszlo Ersek 1973d2baff62SLaszlo Ersek vcpu = g_malloc0(sizeof *vcpu); 1974d2baff62SLaszlo Ersek vcpu->logical_id = current++; 1975d2baff62SLaszlo Ersek vcpu->has_can_offline = true; /* lolspeak ftw */ 1976d2baff62SLaszlo Ersek transfer_vcpu(vcpu, true, &local_err); 1977d2baff62SLaszlo Ersek 1978d2baff62SLaszlo Ersek entry = g_malloc0(sizeof *entry); 1979d2baff62SLaszlo Ersek entry->value = vcpu; 1980d2baff62SLaszlo Ersek 1981d2baff62SLaszlo Ersek *link = entry; 1982d2baff62SLaszlo Ersek link = &entry->next; 1983d2baff62SLaszlo Ersek } 1984d2baff62SLaszlo Ersek 1985d2baff62SLaszlo Ersek if (local_err == NULL) { 1986d2baff62SLaszlo Ersek /* there's no guest with zero VCPUs */ 1987d2baff62SLaszlo Ersek g_assert(head != NULL); 1988d2baff62SLaszlo Ersek return head; 1989d2baff62SLaszlo Ersek } 1990d2baff62SLaszlo Ersek 1991d2baff62SLaszlo Ersek qapi_free_GuestLogicalProcessorList(head); 1992d2baff62SLaszlo Ersek error_propagate(errp, local_err); 1993d2baff62SLaszlo Ersek return NULL; 1994d2baff62SLaszlo Ersek } 1995d2baff62SLaszlo Ersek 1996cbb65fc2SLaszlo Ersek int64_t qmp_guest_set_vcpus(GuestLogicalProcessorList *vcpus, Error **errp) 1997cbb65fc2SLaszlo Ersek { 1998cbb65fc2SLaszlo Ersek int64_t processed; 1999cbb65fc2SLaszlo Ersek Error *local_err = NULL; 2000cbb65fc2SLaszlo Ersek 2001cbb65fc2SLaszlo Ersek processed = 0; 2002cbb65fc2SLaszlo Ersek while (vcpus != NULL) { 2003cbb65fc2SLaszlo Ersek transfer_vcpu(vcpus->value, false, &local_err); 2004cbb65fc2SLaszlo Ersek if (local_err != NULL) { 2005cbb65fc2SLaszlo Ersek break; 2006cbb65fc2SLaszlo Ersek } 2007cbb65fc2SLaszlo Ersek ++processed; 2008cbb65fc2SLaszlo Ersek vcpus = vcpus->next; 2009cbb65fc2SLaszlo Ersek } 2010cbb65fc2SLaszlo Ersek 2011cbb65fc2SLaszlo Ersek if (local_err != NULL) { 2012cbb65fc2SLaszlo Ersek if (processed == 0) { 2013cbb65fc2SLaszlo Ersek error_propagate(errp, local_err); 2014cbb65fc2SLaszlo Ersek } else { 2015cbb65fc2SLaszlo Ersek error_free(local_err); 2016cbb65fc2SLaszlo Ersek } 2017cbb65fc2SLaszlo Ersek } 2018cbb65fc2SLaszlo Ersek 2019cbb65fc2SLaszlo Ersek return processed; 2020cbb65fc2SLaszlo Ersek } 2021cbb65fc2SLaszlo Ersek 2022215a2771SDaniel P. Berrange void qmp_guest_set_user_password(const char *username, 2023215a2771SDaniel P. Berrange const char *password, 2024215a2771SDaniel P. Berrange bool crypted, 2025215a2771SDaniel P. Berrange Error **errp) 2026215a2771SDaniel P. Berrange { 2027215a2771SDaniel P. Berrange Error *local_err = NULL; 2028215a2771SDaniel P. Berrange char *passwd_path = NULL; 2029215a2771SDaniel P. Berrange pid_t pid; 2030215a2771SDaniel P. Berrange int status; 2031215a2771SDaniel P. Berrange int datafd[2] = { -1, -1 }; 2032215a2771SDaniel P. Berrange char *rawpasswddata = NULL; 2033215a2771SDaniel P. Berrange size_t rawpasswdlen; 2034215a2771SDaniel P. Berrange char *chpasswddata = NULL; 2035215a2771SDaniel P. Berrange size_t chpasswdlen; 2036215a2771SDaniel P. Berrange 2037920639caSDaniel P. Berrange rawpasswddata = (char *)qbase64_decode(password, -1, &rawpasswdlen, errp); 2038920639caSDaniel P. Berrange if (!rawpasswddata) { 2039920639caSDaniel P. Berrange return; 2040920639caSDaniel P. Berrange } 2041215a2771SDaniel P. Berrange rawpasswddata = g_renew(char, rawpasswddata, rawpasswdlen + 1); 2042215a2771SDaniel P. Berrange rawpasswddata[rawpasswdlen] = '\0'; 2043215a2771SDaniel P. Berrange 2044215a2771SDaniel P. Berrange if (strchr(rawpasswddata, '\n')) { 2045215a2771SDaniel P. Berrange error_setg(errp, "forbidden characters in raw password"); 2046215a2771SDaniel P. Berrange goto out; 2047215a2771SDaniel P. Berrange } 2048215a2771SDaniel P. Berrange 2049215a2771SDaniel P. Berrange if (strchr(username, '\n') || 2050215a2771SDaniel P. Berrange strchr(username, ':')) { 2051215a2771SDaniel P. Berrange error_setg(errp, "forbidden characters in username"); 2052215a2771SDaniel P. Berrange goto out; 2053215a2771SDaniel P. Berrange } 2054215a2771SDaniel P. Berrange 2055215a2771SDaniel P. Berrange chpasswddata = g_strdup_printf("%s:%s\n", username, rawpasswddata); 2056215a2771SDaniel P. Berrange chpasswdlen = strlen(chpasswddata); 2057215a2771SDaniel P. Berrange 2058215a2771SDaniel P. Berrange passwd_path = g_find_program_in_path("chpasswd"); 2059215a2771SDaniel P. Berrange 2060215a2771SDaniel P. Berrange if (!passwd_path) { 2061215a2771SDaniel P. Berrange error_setg(errp, "cannot find 'passwd' program in PATH"); 2062215a2771SDaniel P. Berrange goto out; 2063215a2771SDaniel P. Berrange } 2064215a2771SDaniel P. Berrange 2065215a2771SDaniel P. Berrange if (pipe(datafd) < 0) { 2066215a2771SDaniel P. Berrange error_setg(errp, "cannot create pipe FDs"); 2067215a2771SDaniel P. Berrange goto out; 2068215a2771SDaniel P. Berrange } 2069215a2771SDaniel P. Berrange 2070215a2771SDaniel P. Berrange pid = fork(); 2071215a2771SDaniel P. Berrange if (pid == 0) { 2072215a2771SDaniel P. Berrange close(datafd[1]); 2073215a2771SDaniel P. Berrange /* child */ 2074215a2771SDaniel P. Berrange setsid(); 2075215a2771SDaniel P. Berrange dup2(datafd[0], 0); 2076215a2771SDaniel P. Berrange reopen_fd_to_null(1); 2077215a2771SDaniel P. Berrange reopen_fd_to_null(2); 2078215a2771SDaniel P. Berrange 2079215a2771SDaniel P. Berrange if (crypted) { 2080215a2771SDaniel P. Berrange execle(passwd_path, "chpasswd", "-e", NULL, environ); 2081215a2771SDaniel P. Berrange } else { 2082215a2771SDaniel P. Berrange execle(passwd_path, "chpasswd", NULL, environ); 2083215a2771SDaniel P. Berrange } 2084215a2771SDaniel P. Berrange _exit(EXIT_FAILURE); 2085215a2771SDaniel P. Berrange } else if (pid < 0) { 2086215a2771SDaniel P. Berrange error_setg_errno(errp, errno, "failed to create child process"); 2087215a2771SDaniel P. Berrange goto out; 2088215a2771SDaniel P. Berrange } 2089215a2771SDaniel P. Berrange close(datafd[0]); 2090215a2771SDaniel P. Berrange datafd[0] = -1; 2091215a2771SDaniel P. Berrange 2092215a2771SDaniel P. Berrange if (qemu_write_full(datafd[1], chpasswddata, chpasswdlen) != chpasswdlen) { 2093215a2771SDaniel P. Berrange error_setg_errno(errp, errno, "cannot write new account password"); 2094215a2771SDaniel P. Berrange goto out; 2095215a2771SDaniel P. Berrange } 2096215a2771SDaniel P. Berrange close(datafd[1]); 2097215a2771SDaniel P. Berrange datafd[1] = -1; 2098215a2771SDaniel P. Berrange 2099215a2771SDaniel P. Berrange ga_wait_child(pid, &status, &local_err); 2100215a2771SDaniel P. Berrange if (local_err) { 2101215a2771SDaniel P. Berrange error_propagate(errp, local_err); 2102215a2771SDaniel P. Berrange goto out; 2103215a2771SDaniel P. Berrange } 2104215a2771SDaniel P. Berrange 2105215a2771SDaniel P. Berrange if (!WIFEXITED(status)) { 2106215a2771SDaniel P. Berrange error_setg(errp, "child process has terminated abnormally"); 2107215a2771SDaniel P. Berrange goto out; 2108215a2771SDaniel P. Berrange } 2109215a2771SDaniel P. Berrange 2110215a2771SDaniel P. Berrange if (WEXITSTATUS(status)) { 2111215a2771SDaniel P. Berrange error_setg(errp, "child process has failed to set user password"); 2112215a2771SDaniel P. Berrange goto out; 2113215a2771SDaniel P. Berrange } 2114215a2771SDaniel P. Berrange 2115215a2771SDaniel P. Berrange out: 2116215a2771SDaniel P. Berrange g_free(chpasswddata); 2117215a2771SDaniel P. Berrange g_free(rawpasswddata); 2118215a2771SDaniel P. Berrange g_free(passwd_path); 2119215a2771SDaniel P. Berrange if (datafd[0] != -1) { 2120215a2771SDaniel P. Berrange close(datafd[0]); 2121215a2771SDaniel P. Berrange } 2122215a2771SDaniel P. Berrange if (datafd[1] != -1) { 2123215a2771SDaniel P. Berrange close(datafd[1]); 2124215a2771SDaniel P. Berrange } 2125215a2771SDaniel P. Berrange } 2126215a2771SDaniel P. Berrange 2127bd240fcaSzhanghailiang static void ga_read_sysfs_file(int dirfd, const char *pathname, char *buf, 2128bd240fcaSzhanghailiang int size, Error **errp) 2129bd240fcaSzhanghailiang { 2130bd240fcaSzhanghailiang int fd; 2131bd240fcaSzhanghailiang int res; 2132bd240fcaSzhanghailiang 2133bd240fcaSzhanghailiang errno = 0; 2134bd240fcaSzhanghailiang fd = openat(dirfd, pathname, O_RDONLY); 2135bd240fcaSzhanghailiang if (fd == -1) { 2136bd240fcaSzhanghailiang error_setg_errno(errp, errno, "open sysfs file \"%s\"", pathname); 2137bd240fcaSzhanghailiang return; 2138bd240fcaSzhanghailiang } 2139bd240fcaSzhanghailiang 2140bd240fcaSzhanghailiang res = pread(fd, buf, size, 0); 2141bd240fcaSzhanghailiang if (res == -1) { 2142bd240fcaSzhanghailiang error_setg_errno(errp, errno, "pread sysfs file \"%s\"", pathname); 2143bd240fcaSzhanghailiang } else if (res == 0) { 2144bd240fcaSzhanghailiang error_setg(errp, "pread sysfs file \"%s\": unexpected EOF", pathname); 2145bd240fcaSzhanghailiang } 2146bd240fcaSzhanghailiang close(fd); 2147bd240fcaSzhanghailiang } 2148bd240fcaSzhanghailiang 2149bd240fcaSzhanghailiang static void ga_write_sysfs_file(int dirfd, const char *pathname, 2150bd240fcaSzhanghailiang const char *buf, int size, Error **errp) 2151bd240fcaSzhanghailiang { 2152bd240fcaSzhanghailiang int fd; 2153bd240fcaSzhanghailiang 2154bd240fcaSzhanghailiang errno = 0; 2155bd240fcaSzhanghailiang fd = openat(dirfd, pathname, O_WRONLY); 2156bd240fcaSzhanghailiang if (fd == -1) { 2157bd240fcaSzhanghailiang error_setg_errno(errp, errno, "open sysfs file \"%s\"", pathname); 2158bd240fcaSzhanghailiang return; 2159bd240fcaSzhanghailiang } 2160bd240fcaSzhanghailiang 2161bd240fcaSzhanghailiang if (pwrite(fd, buf, size, 0) == -1) { 2162bd240fcaSzhanghailiang error_setg_errno(errp, errno, "pwrite sysfs file \"%s\"", pathname); 2163bd240fcaSzhanghailiang } 2164bd240fcaSzhanghailiang 2165bd240fcaSzhanghailiang close(fd); 2166bd240fcaSzhanghailiang } 2167bd240fcaSzhanghailiang 2168bd240fcaSzhanghailiang /* Transfer online/offline status between @mem_blk and the guest system. 2169bd240fcaSzhanghailiang * 2170bd240fcaSzhanghailiang * On input either @errp or *@errp must be NULL. 2171bd240fcaSzhanghailiang * 2172bd240fcaSzhanghailiang * In system-to-@mem_blk direction, the following @mem_blk fields are accessed: 2173bd240fcaSzhanghailiang * - R: mem_blk->phys_index 2174bd240fcaSzhanghailiang * - W: mem_blk->online 2175bd240fcaSzhanghailiang * - W: mem_blk->can_offline 2176bd240fcaSzhanghailiang * 2177bd240fcaSzhanghailiang * In @mem_blk-to-system direction, the following @mem_blk fields are accessed: 2178bd240fcaSzhanghailiang * - R: mem_blk->phys_index 2179bd240fcaSzhanghailiang * - R: mem_blk->online 2180bd240fcaSzhanghailiang *- R: mem_blk->can_offline 2181bd240fcaSzhanghailiang * Written members remain unmodified on error. 2182bd240fcaSzhanghailiang */ 2183bd240fcaSzhanghailiang static void transfer_memory_block(GuestMemoryBlock *mem_blk, bool sys2memblk, 2184bd240fcaSzhanghailiang GuestMemoryBlockResponse *result, 2185bd240fcaSzhanghailiang Error **errp) 2186bd240fcaSzhanghailiang { 2187bd240fcaSzhanghailiang char *dirpath; 2188bd240fcaSzhanghailiang int dirfd; 2189bd240fcaSzhanghailiang char *status; 2190bd240fcaSzhanghailiang Error *local_err = NULL; 2191bd240fcaSzhanghailiang 2192bd240fcaSzhanghailiang if (!sys2memblk) { 2193bd240fcaSzhanghailiang DIR *dp; 2194bd240fcaSzhanghailiang 2195bd240fcaSzhanghailiang if (!result) { 2196bd240fcaSzhanghailiang error_setg(errp, "Internal error, 'result' should not be NULL"); 2197bd240fcaSzhanghailiang return; 2198bd240fcaSzhanghailiang } 2199bd240fcaSzhanghailiang errno = 0; 2200bd240fcaSzhanghailiang dp = opendir("/sys/devices/system/memory/"); 2201bd240fcaSzhanghailiang /* if there is no 'memory' directory in sysfs, 2202bd240fcaSzhanghailiang * we think this VM does not support online/offline memory block, 2203bd240fcaSzhanghailiang * any other solution? 2204bd240fcaSzhanghailiang */ 22059879f5acSPhilippe Mathieu-Daudé if (!dp) { 22069879f5acSPhilippe Mathieu-Daudé if (errno == ENOENT) { 2207bd240fcaSzhanghailiang result->response = 2208bd240fcaSzhanghailiang GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_NOT_SUPPORTED; 22099879f5acSPhilippe Mathieu-Daudé } 2210bd240fcaSzhanghailiang goto out1; 2211bd240fcaSzhanghailiang } 2212bd240fcaSzhanghailiang closedir(dp); 2213bd240fcaSzhanghailiang } 2214bd240fcaSzhanghailiang 2215bd240fcaSzhanghailiang dirpath = g_strdup_printf("/sys/devices/system/memory/memory%" PRId64 "/", 2216bd240fcaSzhanghailiang mem_blk->phys_index); 2217bd240fcaSzhanghailiang dirfd = open(dirpath, O_RDONLY | O_DIRECTORY); 2218bd240fcaSzhanghailiang if (dirfd == -1) { 2219bd240fcaSzhanghailiang if (sys2memblk) { 2220bd240fcaSzhanghailiang error_setg_errno(errp, errno, "open(\"%s\")", dirpath); 2221bd240fcaSzhanghailiang } else { 2222bd240fcaSzhanghailiang if (errno == ENOENT) { 2223bd240fcaSzhanghailiang result->response = GUEST_MEMORY_BLOCK_RESPONSE_TYPE_NOT_FOUND; 2224bd240fcaSzhanghailiang } else { 2225bd240fcaSzhanghailiang result->response = 2226bd240fcaSzhanghailiang GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_FAILED; 2227bd240fcaSzhanghailiang } 2228bd240fcaSzhanghailiang } 2229bd240fcaSzhanghailiang g_free(dirpath); 2230bd240fcaSzhanghailiang goto out1; 2231bd240fcaSzhanghailiang } 2232bd240fcaSzhanghailiang g_free(dirpath); 2233bd240fcaSzhanghailiang 2234bd240fcaSzhanghailiang status = g_malloc0(10); 2235bd240fcaSzhanghailiang ga_read_sysfs_file(dirfd, "state", status, 10, &local_err); 2236bd240fcaSzhanghailiang if (local_err) { 2237bd240fcaSzhanghailiang /* treat with sysfs file that not exist in old kernel */ 2238bd240fcaSzhanghailiang if (errno == ENOENT) { 2239bd240fcaSzhanghailiang error_free(local_err); 2240bd240fcaSzhanghailiang if (sys2memblk) { 2241bd240fcaSzhanghailiang mem_blk->online = true; 2242bd240fcaSzhanghailiang mem_blk->can_offline = false; 2243bd240fcaSzhanghailiang } else if (!mem_blk->online) { 2244bd240fcaSzhanghailiang result->response = 2245bd240fcaSzhanghailiang GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_NOT_SUPPORTED; 2246bd240fcaSzhanghailiang } 2247bd240fcaSzhanghailiang } else { 2248bd240fcaSzhanghailiang if (sys2memblk) { 2249bd240fcaSzhanghailiang error_propagate(errp, local_err); 2250bd240fcaSzhanghailiang } else { 2251bd240fcaSzhanghailiang result->response = 2252bd240fcaSzhanghailiang GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_FAILED; 2253bd240fcaSzhanghailiang } 2254bd240fcaSzhanghailiang } 2255bd240fcaSzhanghailiang goto out2; 2256bd240fcaSzhanghailiang } 2257bd240fcaSzhanghailiang 2258bd240fcaSzhanghailiang if (sys2memblk) { 2259bd240fcaSzhanghailiang char removable = '0'; 2260bd240fcaSzhanghailiang 2261bd240fcaSzhanghailiang mem_blk->online = (strncmp(status, "online", 6) == 0); 2262bd240fcaSzhanghailiang 2263bd240fcaSzhanghailiang ga_read_sysfs_file(dirfd, "removable", &removable, 1, &local_err); 2264bd240fcaSzhanghailiang if (local_err) { 226567cc32ebSVeres Lajos /* if no 'removable' file, it doesn't support offline mem blk */ 2266bd240fcaSzhanghailiang if (errno == ENOENT) { 2267bd240fcaSzhanghailiang error_free(local_err); 2268bd240fcaSzhanghailiang mem_blk->can_offline = false; 2269bd240fcaSzhanghailiang } else { 2270bd240fcaSzhanghailiang error_propagate(errp, local_err); 2271bd240fcaSzhanghailiang } 2272bd240fcaSzhanghailiang } else { 2273bd240fcaSzhanghailiang mem_blk->can_offline = (removable != '0'); 2274bd240fcaSzhanghailiang } 2275bd240fcaSzhanghailiang } else { 2276bd240fcaSzhanghailiang if (mem_blk->online != (strncmp(status, "online", 6) == 0)) { 22777064024dSMarc-André Lureau const char *new_state = mem_blk->online ? "online" : "offline"; 2278bd240fcaSzhanghailiang 2279bd240fcaSzhanghailiang ga_write_sysfs_file(dirfd, "state", new_state, strlen(new_state), 2280bd240fcaSzhanghailiang &local_err); 2281bd240fcaSzhanghailiang if (local_err) { 2282bd240fcaSzhanghailiang error_free(local_err); 2283bd240fcaSzhanghailiang result->response = 2284bd240fcaSzhanghailiang GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_FAILED; 2285bd240fcaSzhanghailiang goto out2; 2286bd240fcaSzhanghailiang } 2287bd240fcaSzhanghailiang 2288bd240fcaSzhanghailiang result->response = GUEST_MEMORY_BLOCK_RESPONSE_TYPE_SUCCESS; 2289bd240fcaSzhanghailiang result->has_error_code = false; 2290bd240fcaSzhanghailiang } /* otherwise pretend successful re-(on|off)-lining */ 2291bd240fcaSzhanghailiang } 2292bd240fcaSzhanghailiang g_free(status); 2293bd240fcaSzhanghailiang close(dirfd); 2294bd240fcaSzhanghailiang return; 2295bd240fcaSzhanghailiang 2296bd240fcaSzhanghailiang out2: 2297bd240fcaSzhanghailiang g_free(status); 2298bd240fcaSzhanghailiang close(dirfd); 2299bd240fcaSzhanghailiang out1: 2300bd240fcaSzhanghailiang if (!sys2memblk) { 2301bd240fcaSzhanghailiang result->has_error_code = true; 2302bd240fcaSzhanghailiang result->error_code = errno; 2303bd240fcaSzhanghailiang } 2304bd240fcaSzhanghailiang } 2305bd240fcaSzhanghailiang 2306a065aaa9Szhanghailiang GuestMemoryBlockList *qmp_guest_get_memory_blocks(Error **errp) 2307a065aaa9Szhanghailiang { 2308bd240fcaSzhanghailiang GuestMemoryBlockList *head, **link; 2309bd240fcaSzhanghailiang Error *local_err = NULL; 2310bd240fcaSzhanghailiang struct dirent *de; 2311bd240fcaSzhanghailiang DIR *dp; 2312bd240fcaSzhanghailiang 2313bd240fcaSzhanghailiang head = NULL; 2314bd240fcaSzhanghailiang link = &head; 2315bd240fcaSzhanghailiang 2316bd240fcaSzhanghailiang dp = opendir("/sys/devices/system/memory/"); 2317bd240fcaSzhanghailiang if (!dp) { 2318f693fe6eSMichael Roth /* it's ok if this happens to be a system that doesn't expose 2319f693fe6eSMichael Roth * memory blocks via sysfs, but otherwise we should report 2320f693fe6eSMichael Roth * an error 2321f693fe6eSMichael Roth */ 2322f693fe6eSMichael Roth if (errno != ENOENT) { 2323bd240fcaSzhanghailiang error_setg_errno(errp, errno, "Can't open directory" 23249af9e0feSMarkus Armbruster "\"/sys/devices/system/memory/\""); 2325f693fe6eSMichael Roth } 2326bd240fcaSzhanghailiang return NULL; 2327bd240fcaSzhanghailiang } 2328bd240fcaSzhanghailiang 2329bd240fcaSzhanghailiang /* Note: the phys_index of memory block may be discontinuous, 2330bd240fcaSzhanghailiang * this is because a memblk is the unit of the Sparse Memory design, which 2331bd240fcaSzhanghailiang * allows discontinuous memory ranges (ex. NUMA), so here we should 2332bd240fcaSzhanghailiang * traverse the memory block directory. 2333bd240fcaSzhanghailiang */ 2334bd240fcaSzhanghailiang while ((de = readdir(dp)) != NULL) { 2335bd240fcaSzhanghailiang GuestMemoryBlock *mem_blk; 2336bd240fcaSzhanghailiang GuestMemoryBlockList *entry; 2337bd240fcaSzhanghailiang 2338bd240fcaSzhanghailiang if ((strncmp(de->d_name, "memory", 6) != 0) || 2339bd240fcaSzhanghailiang !(de->d_type & DT_DIR)) { 2340bd240fcaSzhanghailiang continue; 2341bd240fcaSzhanghailiang } 2342bd240fcaSzhanghailiang 2343bd240fcaSzhanghailiang mem_blk = g_malloc0(sizeof *mem_blk); 2344bd240fcaSzhanghailiang /* The d_name is "memoryXXX", phys_index is block id, same as XXX */ 2345bd240fcaSzhanghailiang mem_blk->phys_index = strtoul(&de->d_name[6], NULL, 10); 2346bd240fcaSzhanghailiang mem_blk->has_can_offline = true; /* lolspeak ftw */ 2347bd240fcaSzhanghailiang transfer_memory_block(mem_blk, true, NULL, &local_err); 2348bd240fcaSzhanghailiang 2349bd240fcaSzhanghailiang entry = g_malloc0(sizeof *entry); 2350bd240fcaSzhanghailiang entry->value = mem_blk; 2351bd240fcaSzhanghailiang 2352bd240fcaSzhanghailiang *link = entry; 2353bd240fcaSzhanghailiang link = &entry->next; 2354bd240fcaSzhanghailiang } 2355bd240fcaSzhanghailiang 2356bd240fcaSzhanghailiang closedir(dp); 2357bd240fcaSzhanghailiang if (local_err == NULL) { 2358bd240fcaSzhanghailiang /* there's no guest with zero memory blocks */ 2359bd240fcaSzhanghailiang if (head == NULL) { 2360bd240fcaSzhanghailiang error_setg(errp, "guest reported zero memory blocks!"); 2361bd240fcaSzhanghailiang } 2362bd240fcaSzhanghailiang return head; 2363bd240fcaSzhanghailiang } 2364bd240fcaSzhanghailiang 2365bd240fcaSzhanghailiang qapi_free_GuestMemoryBlockList(head); 2366bd240fcaSzhanghailiang error_propagate(errp, local_err); 2367a065aaa9Szhanghailiang return NULL; 2368a065aaa9Szhanghailiang } 2369a065aaa9Szhanghailiang 2370a065aaa9Szhanghailiang GuestMemoryBlockResponseList * 2371a065aaa9Szhanghailiang qmp_guest_set_memory_blocks(GuestMemoryBlockList *mem_blks, Error **errp) 2372a065aaa9Szhanghailiang { 237332ca7927Szhanghailiang GuestMemoryBlockResponseList *head, **link; 237432ca7927Szhanghailiang Error *local_err = NULL; 237532ca7927Szhanghailiang 237632ca7927Szhanghailiang head = NULL; 237732ca7927Szhanghailiang link = &head; 237832ca7927Szhanghailiang 237932ca7927Szhanghailiang while (mem_blks != NULL) { 238032ca7927Szhanghailiang GuestMemoryBlockResponse *result; 238132ca7927Szhanghailiang GuestMemoryBlockResponseList *entry; 238232ca7927Szhanghailiang GuestMemoryBlock *current_mem_blk = mem_blks->value; 238332ca7927Szhanghailiang 238432ca7927Szhanghailiang result = g_malloc0(sizeof(*result)); 238532ca7927Szhanghailiang result->phys_index = current_mem_blk->phys_index; 238632ca7927Szhanghailiang transfer_memory_block(current_mem_blk, false, result, &local_err); 238732ca7927Szhanghailiang if (local_err) { /* should never happen */ 238832ca7927Szhanghailiang goto err; 238932ca7927Szhanghailiang } 239032ca7927Szhanghailiang entry = g_malloc0(sizeof *entry); 239132ca7927Szhanghailiang entry->value = result; 239232ca7927Szhanghailiang 239332ca7927Szhanghailiang *link = entry; 239432ca7927Szhanghailiang link = &entry->next; 239532ca7927Szhanghailiang mem_blks = mem_blks->next; 239632ca7927Szhanghailiang } 239732ca7927Szhanghailiang 239832ca7927Szhanghailiang return head; 239932ca7927Szhanghailiang err: 240032ca7927Szhanghailiang qapi_free_GuestMemoryBlockResponseList(head); 240132ca7927Szhanghailiang error_propagate(errp, local_err); 2402a065aaa9Szhanghailiang return NULL; 2403a065aaa9Szhanghailiang } 2404a065aaa9Szhanghailiang 2405a065aaa9Szhanghailiang GuestMemoryBlockInfo *qmp_guest_get_memory_block_info(Error **errp) 2406a065aaa9Szhanghailiang { 2407ef82b60bSzhanghailiang Error *local_err = NULL; 2408ef82b60bSzhanghailiang char *dirpath; 2409ef82b60bSzhanghailiang int dirfd; 2410ef82b60bSzhanghailiang char *buf; 2411ef82b60bSzhanghailiang GuestMemoryBlockInfo *info; 2412ef82b60bSzhanghailiang 2413ef82b60bSzhanghailiang dirpath = g_strdup_printf("/sys/devices/system/memory/"); 2414ef82b60bSzhanghailiang dirfd = open(dirpath, O_RDONLY | O_DIRECTORY); 2415ef82b60bSzhanghailiang if (dirfd == -1) { 2416ef82b60bSzhanghailiang error_setg_errno(errp, errno, "open(\"%s\")", dirpath); 2417ef82b60bSzhanghailiang g_free(dirpath); 2418a065aaa9Szhanghailiang return NULL; 2419a065aaa9Szhanghailiang } 2420ef82b60bSzhanghailiang g_free(dirpath); 2421ef82b60bSzhanghailiang 2422ef82b60bSzhanghailiang buf = g_malloc0(20); 2423ef82b60bSzhanghailiang ga_read_sysfs_file(dirfd, "block_size_bytes", buf, 20, &local_err); 24248ce1ee46SShannon Zhao close(dirfd); 2425ef82b60bSzhanghailiang if (local_err) { 2426ef82b60bSzhanghailiang g_free(buf); 2427ef82b60bSzhanghailiang error_propagate(errp, local_err); 2428ef82b60bSzhanghailiang return NULL; 2429ef82b60bSzhanghailiang } 2430ef82b60bSzhanghailiang 2431ef82b60bSzhanghailiang info = g_new0(GuestMemoryBlockInfo, 1); 2432ef82b60bSzhanghailiang info->size = strtol(buf, NULL, 16); /* the unit is bytes */ 2433ef82b60bSzhanghailiang 2434ef82b60bSzhanghailiang g_free(buf); 2435ef82b60bSzhanghailiang 2436ef82b60bSzhanghailiang return info; 2437ef82b60bSzhanghailiang } 2438a065aaa9Szhanghailiang 2439e72c3f2eSMichael Roth #else /* defined(__linux__) */ 2440e72c3f2eSMichael Roth 244177dbc81bSMarkus Armbruster void qmp_guest_suspend_disk(Error **errp) 2442e72c3f2eSMichael Roth { 2443c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2444e72c3f2eSMichael Roth } 2445e72c3f2eSMichael Roth 244677dbc81bSMarkus Armbruster void qmp_guest_suspend_ram(Error **errp) 2447e72c3f2eSMichael Roth { 2448c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2449e72c3f2eSMichael Roth } 2450e72c3f2eSMichael Roth 245177dbc81bSMarkus Armbruster void qmp_guest_suspend_hybrid(Error **errp) 2452e72c3f2eSMichael Roth { 2453c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2454e72c3f2eSMichael Roth } 2455e72c3f2eSMichael Roth 2456e72c3f2eSMichael Roth GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp) 2457e72c3f2eSMichael Roth { 2458c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2459e72c3f2eSMichael Roth return NULL; 2460e72c3f2eSMichael Roth } 2461e72c3f2eSMichael Roth 2462d2baff62SLaszlo Ersek GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp) 2463d2baff62SLaszlo Ersek { 2464c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2465d2baff62SLaszlo Ersek return NULL; 2466d2baff62SLaszlo Ersek } 2467d2baff62SLaszlo Ersek 2468cbb65fc2SLaszlo Ersek int64_t qmp_guest_set_vcpus(GuestLogicalProcessorList *vcpus, Error **errp) 2469cbb65fc2SLaszlo Ersek { 2470c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2471cbb65fc2SLaszlo Ersek return -1; 2472cbb65fc2SLaszlo Ersek } 2473cbb65fc2SLaszlo Ersek 2474215a2771SDaniel P. Berrange void qmp_guest_set_user_password(const char *username, 2475215a2771SDaniel P. Berrange const char *password, 2476215a2771SDaniel P. Berrange bool crypted, 2477215a2771SDaniel P. Berrange Error **errp) 2478215a2771SDaniel P. Berrange { 2479c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2480215a2771SDaniel P. Berrange } 2481215a2771SDaniel P. Berrange 2482a065aaa9Szhanghailiang GuestMemoryBlockList *qmp_guest_get_memory_blocks(Error **errp) 2483a065aaa9Szhanghailiang { 2484c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2485a065aaa9Szhanghailiang return NULL; 2486a065aaa9Szhanghailiang } 2487a065aaa9Szhanghailiang 2488a065aaa9Szhanghailiang GuestMemoryBlockResponseList * 2489a065aaa9Szhanghailiang qmp_guest_set_memory_blocks(GuestMemoryBlockList *mem_blks, Error **errp) 2490a065aaa9Szhanghailiang { 2491c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2492a065aaa9Szhanghailiang return NULL; 2493a065aaa9Szhanghailiang } 2494a065aaa9Szhanghailiang 2495a065aaa9Szhanghailiang GuestMemoryBlockInfo *qmp_guest_get_memory_block_info(Error **errp) 2496a065aaa9Szhanghailiang { 2497c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2498a065aaa9Szhanghailiang return NULL; 2499a065aaa9Szhanghailiang } 2500a065aaa9Szhanghailiang 2501e72c3f2eSMichael Roth #endif 2502e72c3f2eSMichael Roth 2503d35d4cb5SMichael Roth #if !defined(CONFIG_FSFREEZE) 2504d35d4cb5SMichael Roth 250546d4c572STomoki Sekiyama GuestFilesystemInfoList *qmp_guest_get_fsinfo(Error **errp) 250646d4c572STomoki Sekiyama { 2507c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 250846d4c572STomoki Sekiyama return NULL; 250946d4c572STomoki Sekiyama } 251046d4c572STomoki Sekiyama 251177dbc81bSMarkus Armbruster GuestFsfreezeStatus qmp_guest_fsfreeze_status(Error **errp) 2512d35d4cb5SMichael Roth { 2513c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2514d35d4cb5SMichael Roth 2515d35d4cb5SMichael Roth return 0; 2516d35d4cb5SMichael Roth } 2517d35d4cb5SMichael Roth 251877dbc81bSMarkus Armbruster int64_t qmp_guest_fsfreeze_freeze(Error **errp) 2519d35d4cb5SMichael Roth { 2520c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2521d35d4cb5SMichael Roth 2522d35d4cb5SMichael Roth return 0; 2523d35d4cb5SMichael Roth } 2524d35d4cb5SMichael Roth 2525e99bce20STomoki Sekiyama int64_t qmp_guest_fsfreeze_freeze_list(bool has_mountpoints, 2526e99bce20STomoki Sekiyama strList *mountpoints, 2527e99bce20STomoki Sekiyama Error **errp) 2528e99bce20STomoki Sekiyama { 2529c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2530e99bce20STomoki Sekiyama 2531e99bce20STomoki Sekiyama return 0; 2532e99bce20STomoki Sekiyama } 2533e99bce20STomoki Sekiyama 253477dbc81bSMarkus Armbruster int64_t qmp_guest_fsfreeze_thaw(Error **errp) 2535d35d4cb5SMichael Roth { 2536c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2537d35d4cb5SMichael Roth 2538d35d4cb5SMichael Roth return 0; 2539d35d4cb5SMichael Roth } 2540eab5fd59SPaolo Bonzini #endif /* CONFIG_FSFREEZE */ 2541d35d4cb5SMichael Roth 2542eab5fd59SPaolo Bonzini #if !defined(CONFIG_FSTRIM) 2543e82855d9SJustin Ossevoort GuestFilesystemTrimResponse * 2544e82855d9SJustin Ossevoort qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **errp) 2545eab5fd59SPaolo Bonzini { 2546c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2547e82855d9SJustin Ossevoort return NULL; 2548eab5fd59SPaolo Bonzini } 2549d35d4cb5SMichael Roth #endif 2550d35d4cb5SMichael Roth 25511281c08aSTomoki Sekiyama /* add unsupported commands to the blacklist */ 25521281c08aSTomoki Sekiyama GList *ga_command_blacklist_init(GList *blacklist) 25531281c08aSTomoki Sekiyama { 25541281c08aSTomoki Sekiyama #if !defined(__linux__) 25551281c08aSTomoki Sekiyama { 25561281c08aSTomoki Sekiyama const char *list[] = { 25571281c08aSTomoki Sekiyama "guest-suspend-disk", "guest-suspend-ram", 25581281c08aSTomoki Sekiyama "guest-suspend-hybrid", "guest-network-get-interfaces", 25590dd38a03Szhanghailiang "guest-get-vcpus", "guest-set-vcpus", 25600dd38a03Szhanghailiang "guest-get-memory-blocks", "guest-set-memory-blocks", 25610dd38a03Szhanghailiang "guest-get-memory-block-size", NULL}; 25621281c08aSTomoki Sekiyama char **p = (char **)list; 25631281c08aSTomoki Sekiyama 25641281c08aSTomoki Sekiyama while (*p) { 25654bca81ceSMarc-André Lureau blacklist = g_list_append(blacklist, g_strdup(*p++)); 25661281c08aSTomoki Sekiyama } 25671281c08aSTomoki Sekiyama } 25681281c08aSTomoki Sekiyama #endif 25691281c08aSTomoki Sekiyama 25701281c08aSTomoki Sekiyama #if !defined(CONFIG_FSFREEZE) 25711281c08aSTomoki Sekiyama { 25721281c08aSTomoki Sekiyama const char *list[] = { 25731281c08aSTomoki Sekiyama "guest-get-fsinfo", "guest-fsfreeze-status", 25741281c08aSTomoki Sekiyama "guest-fsfreeze-freeze", "guest-fsfreeze-freeze-list", 25751281c08aSTomoki Sekiyama "guest-fsfreeze-thaw", "guest-get-fsinfo", NULL}; 25761281c08aSTomoki Sekiyama char **p = (char **)list; 25771281c08aSTomoki Sekiyama 25781281c08aSTomoki Sekiyama while (*p) { 25794bca81ceSMarc-André Lureau blacklist = g_list_append(blacklist, g_strdup(*p++)); 25801281c08aSTomoki Sekiyama } 25811281c08aSTomoki Sekiyama } 25821281c08aSTomoki Sekiyama #endif 25831281c08aSTomoki Sekiyama 25841281c08aSTomoki Sekiyama #if !defined(CONFIG_FSTRIM) 25854bca81ceSMarc-André Lureau blacklist = g_list_append(blacklist, g_strdup("guest-fstrim")); 25861281c08aSTomoki Sekiyama #endif 25871281c08aSTomoki Sekiyama 25881281c08aSTomoki Sekiyama return blacklist; 25891281c08aSTomoki Sekiyama } 25901281c08aSTomoki Sekiyama 2591c216e5adSMichael Roth /* register init/cleanup routines for stateful command groups */ 2592c216e5adSMichael Roth void ga_command_state_init(GAState *s, GACommandState *cs) 2593c216e5adSMichael Roth { 2594c216e5adSMichael Roth #if defined(CONFIG_FSFREEZE) 2595f22d85e9SMichael Roth ga_command_state_add(cs, NULL, guest_fsfreeze_cleanup); 2596c216e5adSMichael Roth #endif 2597c216e5adSMichael Roth } 2598161a56a9SVinzenz Feenstra 2599e674605fSTomáš Golembiovský #ifdef HAVE_UTMPX 2600e674605fSTomáš Golembiovský 2601161a56a9SVinzenz Feenstra #define QGA_MICRO_SECOND_TO_SECOND 1000000 2602161a56a9SVinzenz Feenstra 2603161a56a9SVinzenz Feenstra static double ga_get_login_time(struct utmpx *user_info) 2604161a56a9SVinzenz Feenstra { 2605161a56a9SVinzenz Feenstra double seconds = (double)user_info->ut_tv.tv_sec; 2606161a56a9SVinzenz Feenstra double useconds = (double)user_info->ut_tv.tv_usec; 2607161a56a9SVinzenz Feenstra useconds /= QGA_MICRO_SECOND_TO_SECOND; 2608161a56a9SVinzenz Feenstra return seconds + useconds; 2609161a56a9SVinzenz Feenstra } 2610161a56a9SVinzenz Feenstra 2611161a56a9SVinzenz Feenstra GuestUserList *qmp_guest_get_users(Error **err) 2612161a56a9SVinzenz Feenstra { 2613161a56a9SVinzenz Feenstra GHashTable *cache = NULL; 2614161a56a9SVinzenz Feenstra GuestUserList *head = NULL, *cur_item = NULL; 2615161a56a9SVinzenz Feenstra struct utmpx *user_info = NULL; 2616161a56a9SVinzenz Feenstra gpointer value = NULL; 2617161a56a9SVinzenz Feenstra GuestUser *user = NULL; 2618161a56a9SVinzenz Feenstra GuestUserList *item = NULL; 2619161a56a9SVinzenz Feenstra double login_time = 0; 2620161a56a9SVinzenz Feenstra 2621161a56a9SVinzenz Feenstra cache = g_hash_table_new(g_str_hash, g_str_equal); 2622161a56a9SVinzenz Feenstra setutxent(); 2623161a56a9SVinzenz Feenstra 2624161a56a9SVinzenz Feenstra for (;;) { 2625161a56a9SVinzenz Feenstra user_info = getutxent(); 2626161a56a9SVinzenz Feenstra if (user_info == NULL) { 2627161a56a9SVinzenz Feenstra break; 2628161a56a9SVinzenz Feenstra } else if (user_info->ut_type != USER_PROCESS) { 2629161a56a9SVinzenz Feenstra continue; 2630161a56a9SVinzenz Feenstra } else if (g_hash_table_contains(cache, user_info->ut_user)) { 2631161a56a9SVinzenz Feenstra value = g_hash_table_lookup(cache, user_info->ut_user); 2632161a56a9SVinzenz Feenstra user = (GuestUser *)value; 2633161a56a9SVinzenz Feenstra login_time = ga_get_login_time(user_info); 2634161a56a9SVinzenz Feenstra /* We're ensuring the earliest login time to be sent */ 2635161a56a9SVinzenz Feenstra if (login_time < user->login_time) { 2636161a56a9SVinzenz Feenstra user->login_time = login_time; 2637161a56a9SVinzenz Feenstra } 2638161a56a9SVinzenz Feenstra continue; 2639161a56a9SVinzenz Feenstra } 2640161a56a9SVinzenz Feenstra 2641161a56a9SVinzenz Feenstra item = g_new0(GuestUserList, 1); 2642161a56a9SVinzenz Feenstra item->value = g_new0(GuestUser, 1); 2643161a56a9SVinzenz Feenstra item->value->user = g_strdup(user_info->ut_user); 2644161a56a9SVinzenz Feenstra item->value->login_time = ga_get_login_time(user_info); 2645161a56a9SVinzenz Feenstra 2646161a56a9SVinzenz Feenstra g_hash_table_insert(cache, item->value->user, item->value); 2647161a56a9SVinzenz Feenstra 2648161a56a9SVinzenz Feenstra if (!cur_item) { 2649161a56a9SVinzenz Feenstra head = cur_item = item; 2650161a56a9SVinzenz Feenstra } else { 2651161a56a9SVinzenz Feenstra cur_item->next = item; 2652161a56a9SVinzenz Feenstra cur_item = item; 2653161a56a9SVinzenz Feenstra } 2654161a56a9SVinzenz Feenstra } 2655161a56a9SVinzenz Feenstra endutxent(); 2656161a56a9SVinzenz Feenstra g_hash_table_destroy(cache); 2657161a56a9SVinzenz Feenstra return head; 2658161a56a9SVinzenz Feenstra } 2659e674605fSTomáš Golembiovský 2660e674605fSTomáš Golembiovský #else 2661e674605fSTomáš Golembiovský 2662e674605fSTomáš Golembiovský GuestUserList *qmp_guest_get_users(Error **errp) 2663e674605fSTomáš Golembiovský { 2664e674605fSTomáš Golembiovský error_setg(errp, QERR_UNSUPPORTED); 2665e674605fSTomáš Golembiovský return NULL; 2666e674605fSTomáš Golembiovský } 2667e674605fSTomáš Golembiovský 2668e674605fSTomáš Golembiovský #endif 26699848f797STomáš Golembiovský 26709848f797STomáš Golembiovský /* Replace escaped special characters with theire real values. The replacement 26719848f797STomáš Golembiovský * is done in place -- returned value is in the original string. 26729848f797STomáš Golembiovský */ 26739848f797STomáš Golembiovský static void ga_osrelease_replace_special(gchar *value) 26749848f797STomáš Golembiovský { 26759848f797STomáš Golembiovský gchar *p, *p2, quote; 26769848f797STomáš Golembiovský 26779848f797STomáš Golembiovský /* Trim the string at first space or semicolon if it is not enclosed in 26789848f797STomáš Golembiovský * single or double quotes. */ 26799848f797STomáš Golembiovský if ((value[0] != '"') || (value[0] == '\'')) { 26809848f797STomáš Golembiovský p = strchr(value, ' '); 26819848f797STomáš Golembiovský if (p != NULL) { 26829848f797STomáš Golembiovský *p = 0; 26839848f797STomáš Golembiovský } 26849848f797STomáš Golembiovský p = strchr(value, ';'); 26859848f797STomáš Golembiovský if (p != NULL) { 26869848f797STomáš Golembiovský *p = 0; 26879848f797STomáš Golembiovský } 26889848f797STomáš Golembiovský return; 26899848f797STomáš Golembiovský } 26909848f797STomáš Golembiovský 26919848f797STomáš Golembiovský quote = value[0]; 26929848f797STomáš Golembiovský p2 = value; 26939848f797STomáš Golembiovský p = value + 1; 26949848f797STomáš Golembiovský while (*p != 0) { 26959848f797STomáš Golembiovský if (*p == '\\') { 26969848f797STomáš Golembiovský p++; 26979848f797STomáš Golembiovský switch (*p) { 26989848f797STomáš Golembiovský case '$': 26999848f797STomáš Golembiovský case '\'': 27009848f797STomáš Golembiovský case '"': 27019848f797STomáš Golembiovský case '\\': 27029848f797STomáš Golembiovský case '`': 27039848f797STomáš Golembiovský break; 27049848f797STomáš Golembiovský default: 27059848f797STomáš Golembiovský /* Keep literal backslash followed by whatever is there */ 27069848f797STomáš Golembiovský p--; 27079848f797STomáš Golembiovský break; 27089848f797STomáš Golembiovský } 27099848f797STomáš Golembiovský } else if (*p == quote) { 27109848f797STomáš Golembiovský *p2 = 0; 27119848f797STomáš Golembiovský break; 27129848f797STomáš Golembiovský } 27139848f797STomáš Golembiovský *(p2++) = *(p++); 27149848f797STomáš Golembiovský } 27159848f797STomáš Golembiovský } 27169848f797STomáš Golembiovský 27179848f797STomáš Golembiovský static GKeyFile *ga_parse_osrelease(const char *fname) 27189848f797STomáš Golembiovský { 27199848f797STomáš Golembiovský gchar *content = NULL; 27209848f797STomáš Golembiovský gchar *content2 = NULL; 27219848f797STomáš Golembiovský GError *err = NULL; 27229848f797STomáš Golembiovský GKeyFile *keys = g_key_file_new(); 27239848f797STomáš Golembiovský const char *group = "[os-release]\n"; 27249848f797STomáš Golembiovský 27259848f797STomáš Golembiovský if (!g_file_get_contents(fname, &content, NULL, &err)) { 27269848f797STomáš Golembiovský slog("failed to read '%s', error: %s", fname, err->message); 27279848f797STomáš Golembiovský goto fail; 27289848f797STomáš Golembiovský } 27299848f797STomáš Golembiovský 27309848f797STomáš Golembiovský if (!g_utf8_validate(content, -1, NULL)) { 27319848f797STomáš Golembiovský slog("file is not utf-8 encoded: %s", fname); 27329848f797STomáš Golembiovský goto fail; 27339848f797STomáš Golembiovský } 27349848f797STomáš Golembiovský content2 = g_strdup_printf("%s%s", group, content); 27359848f797STomáš Golembiovský 27369848f797STomáš Golembiovský if (!g_key_file_load_from_data(keys, content2, -1, G_KEY_FILE_NONE, 27379848f797STomáš Golembiovský &err)) { 27389848f797STomáš Golembiovský slog("failed to parse file '%s', error: %s", fname, err->message); 27399848f797STomáš Golembiovský goto fail; 27409848f797STomáš Golembiovský } 27419848f797STomáš Golembiovský 27429848f797STomáš Golembiovský g_free(content); 27439848f797STomáš Golembiovský g_free(content2); 27449848f797STomáš Golembiovský return keys; 27459848f797STomáš Golembiovský 27469848f797STomáš Golembiovský fail: 27479848f797STomáš Golembiovský g_error_free(err); 27489848f797STomáš Golembiovský g_free(content); 27499848f797STomáš Golembiovský g_free(content2); 27509848f797STomáš Golembiovský g_key_file_free(keys); 27519848f797STomáš Golembiovský return NULL; 27529848f797STomáš Golembiovský } 27539848f797STomáš Golembiovský 27549848f797STomáš Golembiovský GuestOSInfo *qmp_guest_get_osinfo(Error **errp) 27559848f797STomáš Golembiovský { 27569848f797STomáš Golembiovský GuestOSInfo *info = NULL; 27579848f797STomáš Golembiovský struct utsname kinfo; 2758339ca68bSTomáš Golembiovský GKeyFile *osrelease = NULL; 2759339ca68bSTomáš Golembiovský const char *qga_os_release = g_getenv("QGA_OS_RELEASE"); 27609848f797STomáš Golembiovský 27619848f797STomáš Golembiovský info = g_new0(GuestOSInfo, 1); 27629848f797STomáš Golembiovský 27639848f797STomáš Golembiovský if (uname(&kinfo) != 0) { 27649848f797STomáš Golembiovský error_setg_errno(errp, errno, "uname failed"); 27659848f797STomáš Golembiovský } else { 27669848f797STomáš Golembiovský info->has_kernel_version = true; 27679848f797STomáš Golembiovský info->kernel_version = g_strdup(kinfo.version); 27689848f797STomáš Golembiovský info->has_kernel_release = true; 27699848f797STomáš Golembiovský info->kernel_release = g_strdup(kinfo.release); 27709848f797STomáš Golembiovský info->has_machine = true; 27719848f797STomáš Golembiovský info->machine = g_strdup(kinfo.machine); 27729848f797STomáš Golembiovský } 27739848f797STomáš Golembiovský 2774339ca68bSTomáš Golembiovský if (qga_os_release != NULL) { 2775339ca68bSTomáš Golembiovský osrelease = ga_parse_osrelease(qga_os_release); 2776339ca68bSTomáš Golembiovský } else { 27779848f797STomáš Golembiovský osrelease = ga_parse_osrelease("/etc/os-release"); 27789848f797STomáš Golembiovský if (osrelease == NULL) { 27799848f797STomáš Golembiovský osrelease = ga_parse_osrelease("/usr/lib/os-release"); 27809848f797STomáš Golembiovský } 2781339ca68bSTomáš Golembiovský } 27829848f797STomáš Golembiovský 27839848f797STomáš Golembiovský if (osrelease != NULL) { 27849848f797STomáš Golembiovský char *value; 27859848f797STomáš Golembiovský 27869848f797STomáš Golembiovský #define GET_FIELD(field, osfield) do { \ 27879848f797STomáš Golembiovský value = g_key_file_get_value(osrelease, "os-release", osfield, NULL); \ 27889848f797STomáš Golembiovský if (value != NULL) { \ 27899848f797STomáš Golembiovský ga_osrelease_replace_special(value); \ 27909848f797STomáš Golembiovský info->has_ ## field = true; \ 27919848f797STomáš Golembiovský info->field = value; \ 27929848f797STomáš Golembiovský } \ 27939848f797STomáš Golembiovský } while (0) 27949848f797STomáš Golembiovský GET_FIELD(id, "ID"); 27959848f797STomáš Golembiovský GET_FIELD(name, "NAME"); 27969848f797STomáš Golembiovský GET_FIELD(pretty_name, "PRETTY_NAME"); 27979848f797STomáš Golembiovský GET_FIELD(version, "VERSION"); 27989848f797STomáš Golembiovský GET_FIELD(version_id, "VERSION_ID"); 27999848f797STomáš Golembiovský GET_FIELD(variant, "VARIANT"); 28009848f797STomáš Golembiovský GET_FIELD(variant_id, "VARIANT_ID"); 28019848f797STomáš Golembiovský #undef GET_FIELD 28029848f797STomáš Golembiovský 28039848f797STomáš Golembiovský g_key_file_free(osrelease); 28049848f797STomáš Golembiovský } 28059848f797STomáš Golembiovský 28069848f797STomáš Golembiovský return info; 28079848f797STomáš Golembiovský } 2808