1c216e5adSMichael Roth /* 2c216e5adSMichael Roth * QEMU Guest Agent POSIX-specific command implementations 3c216e5adSMichael Roth * 4c216e5adSMichael Roth * Copyright IBM Corp. 2011 5c216e5adSMichael Roth * 6c216e5adSMichael Roth * Authors: 7c216e5adSMichael Roth * Michael Roth <mdroth@linux.vnet.ibm.com> 83424fc9fSMichal Privoznik * Michal Privoznik <mprivozn@redhat.com> 9c216e5adSMichael Roth * 10c216e5adSMichael Roth * This work is licensed under the terms of the GNU GPL, version 2 or later. 11c216e5adSMichael Roth * See the COPYING file in the top-level directory. 12c216e5adSMichael Roth */ 13c216e5adSMichael Roth 14c216e5adSMichael Roth #include <glib.h> 15c216e5adSMichael Roth #include <sys/types.h> 16c216e5adSMichael Roth #include <sys/ioctl.h> 172c02cbf6SLuiz Capitulino #include <sys/wait.h> 18d2baff62SLaszlo Ersek #include <unistd.h> 19d2baff62SLaszlo Ersek #include <errno.h> 20d2baff62SLaszlo Ersek #include <fcntl.h> 2146d4c572STomoki Sekiyama #include <dirent.h> 22c689b4f1SLaszlo Ersek #include <stdio.h> 23c689b4f1SLaszlo Ersek #include <string.h> 24c689b4f1SLaszlo Ersek #include <sys/stat.h> 25d2baff62SLaszlo Ersek #include <inttypes.h> 26c216e5adSMichael Roth #include "qga/guest-agent-core.h" 27c216e5adSMichael Roth #include "qga-qmp-commands.h" 287b1b5d19SPaolo Bonzini #include "qapi/qmp/qerror.h" 291de7afc9SPaolo Bonzini #include "qemu/queue.h" 301de7afc9SPaolo Bonzini #include "qemu/host-utils.h" 3112505396SDenis V. Lunev #include "qemu/sockets.h" 32c216e5adSMichael Roth 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 int64_t time_ns; 1376912e6a9SLei Li 1386912e6a9SLei Li ret = qemu_gettimeofday(&tq); 1396912e6a9SLei Li if (ret < 0) { 1406912e6a9SLei Li error_setg_errno(errp, errno, "Failed to get time"); 1416912e6a9SLei Li return -1; 1426912e6a9SLei Li } 1436912e6a9SLei Li 1446912e6a9SLei Li time_ns = tq.tv_sec * 1000000000LL + tq.tv_usec * 1000; 1456912e6a9SLei Li return time_ns; 1466912e6a9SLei Li } 1476912e6a9SLei Li 1482c958923SMichal Privoznik void qmp_guest_set_time(bool has_time, int64_t time_ns, Error **errp) 149a1bca57fSLei Li { 150a1bca57fSLei Li int ret; 151a1bca57fSLei Li int status; 152a1bca57fSLei Li pid_t pid; 153a1bca57fSLei Li Error *local_err = NULL; 154a1bca57fSLei Li struct timeval tv; 155a1bca57fSLei Li 1562c958923SMichal Privoznik /* If user has passed a time, validate and set it. */ 1572c958923SMichal Privoznik if (has_time) { 15800d2f370SMarc-André Lureau GDate date = { 0, }; 15900d2f370SMarc-André Lureau 160a1bca57fSLei Li /* year-2038 will overflow in case time_t is 32bit */ 161a1bca57fSLei Li if (time_ns / 1000000000 != (time_t)(time_ns / 1000000000)) { 162a1bca57fSLei Li error_setg(errp, "Time %" PRId64 " is too large", time_ns); 163a1bca57fSLei Li return; 164a1bca57fSLei Li } 165a1bca57fSLei Li 166a1bca57fSLei Li tv.tv_sec = time_ns / 1000000000; 167a1bca57fSLei Li tv.tv_usec = (time_ns % 1000000000) / 1000; 16800d2f370SMarc-André Lureau g_date_set_time_t(&date, tv.tv_sec); 16900d2f370SMarc-André Lureau if (date.year < 1970 || date.year >= 2070) { 17000d2f370SMarc-André Lureau error_setg_errno(errp, errno, "Invalid time"); 17100d2f370SMarc-André Lureau return; 17200d2f370SMarc-André Lureau } 173a1bca57fSLei Li 174a1bca57fSLei Li ret = settimeofday(&tv, NULL); 175a1bca57fSLei Li if (ret < 0) { 176a1bca57fSLei Li error_setg_errno(errp, errno, "Failed to set time to guest"); 177a1bca57fSLei Li return; 178a1bca57fSLei Li } 1792c958923SMichal Privoznik } 180a1bca57fSLei Li 1812c958923SMichal Privoznik /* Now, if user has passed a time to set and the system time is set, we 1822c958923SMichal Privoznik * just need to synchronize the hardware clock. However, if no time was 1832c958923SMichal Privoznik * passed, user is requesting the opposite: set the system time from the 1841634df56SAmos Kong * hardware clock (RTC). */ 185a1bca57fSLei Li pid = fork(); 186a1bca57fSLei Li if (pid == 0) { 187a1bca57fSLei Li setsid(); 188a1bca57fSLei Li reopen_fd_to_null(0); 189a1bca57fSLei Li reopen_fd_to_null(1); 190a1bca57fSLei Li reopen_fd_to_null(2); 191a1bca57fSLei Li 1922c958923SMichal Privoznik /* Use '/sbin/hwclock -w' to set RTC from the system time, 1932c958923SMichal Privoznik * or '/sbin/hwclock -s' to set the system time from RTC. */ 1942c958923SMichal Privoznik execle("/sbin/hwclock", "hwclock", has_time ? "-w" : "-s", 1952c958923SMichal Privoznik NULL, environ); 196a1bca57fSLei Li _exit(EXIT_FAILURE); 197a1bca57fSLei Li } else if (pid < 0) { 198a1bca57fSLei Li error_setg_errno(errp, errno, "failed to create child process"); 199a1bca57fSLei Li return; 200a1bca57fSLei Li } 201a1bca57fSLei Li 202a1bca57fSLei Li ga_wait_child(pid, &status, &local_err); 20384d18f06SMarkus Armbruster if (local_err) { 204a1bca57fSLei Li error_propagate(errp, local_err); 205a1bca57fSLei Li return; 206a1bca57fSLei Li } 207a1bca57fSLei Li 208a1bca57fSLei Li if (!WIFEXITED(status)) { 209a1bca57fSLei Li error_setg(errp, "child process has terminated abnormally"); 210a1bca57fSLei Li return; 211a1bca57fSLei Li } 212a1bca57fSLei Li 213a1bca57fSLei Li if (WEXITSTATUS(status)) { 214a1bca57fSLei Li error_setg(errp, "hwclock failed to set hardware clock to system time"); 215a1bca57fSLei Li return; 216a1bca57fSLei Li } 217a1bca57fSLei Li } 218a1bca57fSLei Li 219*895b00f6SMarc-André Lureau typedef enum { 220*895b00f6SMarc-André Lureau RW_STATE_NEW, 221*895b00f6SMarc-André Lureau RW_STATE_READING, 222*895b00f6SMarc-André Lureau RW_STATE_WRITING, 223*895b00f6SMarc-André Lureau } RwState; 224*895b00f6SMarc-André Lureau 225c216e5adSMichael Roth typedef struct GuestFileHandle { 226c216e5adSMichael Roth uint64_t id; 227c216e5adSMichael Roth FILE *fh; 228*895b00f6SMarc-André Lureau RwState state; 229c216e5adSMichael Roth QTAILQ_ENTRY(GuestFileHandle) next; 230c216e5adSMichael Roth } GuestFileHandle; 231c216e5adSMichael Roth 232c216e5adSMichael Roth static struct { 233c216e5adSMichael Roth QTAILQ_HEAD(, GuestFileHandle) filehandles; 234b4fe97c8SDenis V. Lunev } guest_file_state = { 235b4fe97c8SDenis V. Lunev .filehandles = QTAILQ_HEAD_INITIALIZER(guest_file_state.filehandles), 236b4fe97c8SDenis V. Lunev }; 237c216e5adSMichael Roth 23839097dafSMichael Roth static int64_t guest_file_handle_add(FILE *fh, Error **errp) 239c216e5adSMichael Roth { 240c216e5adSMichael Roth GuestFileHandle *gfh; 24139097dafSMichael Roth int64_t handle; 24239097dafSMichael Roth 24339097dafSMichael Roth handle = ga_get_fd_handle(ga_state, errp); 244a903f40cSMarkus Armbruster if (handle < 0) { 245a903f40cSMarkus Armbruster return -1; 24639097dafSMichael Roth } 247c216e5adSMichael Roth 248f3a06403SMarkus Armbruster gfh = g_new0(GuestFileHandle, 1); 24939097dafSMichael Roth gfh->id = handle; 250c216e5adSMichael Roth gfh->fh = fh; 251c216e5adSMichael Roth QTAILQ_INSERT_TAIL(&guest_file_state.filehandles, gfh, next); 25239097dafSMichael Roth 25339097dafSMichael Roth return handle; 254c216e5adSMichael Roth } 255c216e5adSMichael Roth 25677dbc81bSMarkus Armbruster static GuestFileHandle *guest_file_handle_find(int64_t id, Error **errp) 257c216e5adSMichael Roth { 258c216e5adSMichael Roth GuestFileHandle *gfh; 259c216e5adSMichael Roth 260c216e5adSMichael Roth QTAILQ_FOREACH(gfh, &guest_file_state.filehandles, next) 261c216e5adSMichael Roth { 262c216e5adSMichael Roth if (gfh->id == id) { 263c216e5adSMichael Roth return gfh; 264c216e5adSMichael Roth } 265c216e5adSMichael Roth } 266c216e5adSMichael Roth 26777dbc81bSMarkus Armbruster error_setg(errp, "handle '%" PRId64 "' has not been found", id); 268c216e5adSMichael Roth return NULL; 269c216e5adSMichael Roth } 270c216e5adSMichael Roth 271c689b4f1SLaszlo Ersek typedef const char * const ccpc; 272c689b4f1SLaszlo Ersek 2738fe6bbcaSLaszlo Ersek #ifndef O_BINARY 2748fe6bbcaSLaszlo Ersek #define O_BINARY 0 2758fe6bbcaSLaszlo Ersek #endif 2768fe6bbcaSLaszlo Ersek 277c689b4f1SLaszlo Ersek /* http://pubs.opengroup.org/onlinepubs/9699919799/functions/fopen.html */ 278c689b4f1SLaszlo Ersek static const struct { 279c689b4f1SLaszlo Ersek ccpc *forms; 280c689b4f1SLaszlo Ersek int oflag_base; 281c689b4f1SLaszlo Ersek } guest_file_open_modes[] = { 2828fe6bbcaSLaszlo Ersek { (ccpc[]){ "r", NULL }, O_RDONLY }, 2838fe6bbcaSLaszlo Ersek { (ccpc[]){ "rb", NULL }, O_RDONLY | O_BINARY }, 2848fe6bbcaSLaszlo Ersek { (ccpc[]){ "w", NULL }, O_WRONLY | O_CREAT | O_TRUNC }, 2858fe6bbcaSLaszlo Ersek { (ccpc[]){ "wb", NULL }, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY }, 2868fe6bbcaSLaszlo Ersek { (ccpc[]){ "a", NULL }, O_WRONLY | O_CREAT | O_APPEND }, 2878fe6bbcaSLaszlo Ersek { (ccpc[]){ "ab", NULL }, O_WRONLY | O_CREAT | O_APPEND | O_BINARY }, 2888fe6bbcaSLaszlo Ersek { (ccpc[]){ "r+", NULL }, O_RDWR }, 2898fe6bbcaSLaszlo Ersek { (ccpc[]){ "rb+", "r+b", NULL }, O_RDWR | O_BINARY }, 2908fe6bbcaSLaszlo Ersek { (ccpc[]){ "w+", NULL }, O_RDWR | O_CREAT | O_TRUNC }, 2918fe6bbcaSLaszlo Ersek { (ccpc[]){ "wb+", "w+b", NULL }, O_RDWR | O_CREAT | O_TRUNC | O_BINARY }, 2928fe6bbcaSLaszlo Ersek { (ccpc[]){ "a+", NULL }, O_RDWR | O_CREAT | O_APPEND }, 2938fe6bbcaSLaszlo Ersek { (ccpc[]){ "ab+", "a+b", NULL }, O_RDWR | O_CREAT | O_APPEND | O_BINARY } 294c689b4f1SLaszlo Ersek }; 295c689b4f1SLaszlo Ersek 296c689b4f1SLaszlo Ersek static int 29777dbc81bSMarkus Armbruster find_open_flag(const char *mode_str, Error **errp) 298c689b4f1SLaszlo Ersek { 299c689b4f1SLaszlo Ersek unsigned mode; 300c689b4f1SLaszlo Ersek 301c689b4f1SLaszlo Ersek for (mode = 0; mode < ARRAY_SIZE(guest_file_open_modes); ++mode) { 302c689b4f1SLaszlo Ersek ccpc *form; 303c689b4f1SLaszlo Ersek 304c689b4f1SLaszlo Ersek form = guest_file_open_modes[mode].forms; 305c689b4f1SLaszlo Ersek while (*form != NULL && strcmp(*form, mode_str) != 0) { 306c689b4f1SLaszlo Ersek ++form; 307c689b4f1SLaszlo Ersek } 308c689b4f1SLaszlo Ersek if (*form != NULL) { 309c689b4f1SLaszlo Ersek break; 310c689b4f1SLaszlo Ersek } 311c689b4f1SLaszlo Ersek } 312c689b4f1SLaszlo Ersek 313c689b4f1SLaszlo Ersek if (mode == ARRAY_SIZE(guest_file_open_modes)) { 31477dbc81bSMarkus Armbruster error_setg(errp, "invalid file open mode '%s'", mode_str); 315c689b4f1SLaszlo Ersek return -1; 316c689b4f1SLaszlo Ersek } 317c689b4f1SLaszlo Ersek return guest_file_open_modes[mode].oflag_base | O_NOCTTY | O_NONBLOCK; 318c689b4f1SLaszlo Ersek } 319c689b4f1SLaszlo Ersek 320c689b4f1SLaszlo Ersek #define DEFAULT_NEW_FILE_MODE (S_IRUSR | S_IWUSR | \ 321c689b4f1SLaszlo Ersek S_IRGRP | S_IWGRP | \ 322c689b4f1SLaszlo Ersek S_IROTH | S_IWOTH) 323c689b4f1SLaszlo Ersek 324c689b4f1SLaszlo Ersek static FILE * 32577dbc81bSMarkus Armbruster safe_open_or_create(const char *path, const char *mode, Error **errp) 326c689b4f1SLaszlo Ersek { 327c689b4f1SLaszlo Ersek Error *local_err = NULL; 328c689b4f1SLaszlo Ersek int oflag; 329c689b4f1SLaszlo Ersek 330c689b4f1SLaszlo Ersek oflag = find_open_flag(mode, &local_err); 331c689b4f1SLaszlo Ersek if (local_err == NULL) { 332c689b4f1SLaszlo Ersek int fd; 333c689b4f1SLaszlo Ersek 334c689b4f1SLaszlo Ersek /* If the caller wants / allows creation of a new file, we implement it 335c689b4f1SLaszlo Ersek * with a two step process: open() + (open() / fchmod()). 336c689b4f1SLaszlo Ersek * 337c689b4f1SLaszlo Ersek * First we insist on creating the file exclusively as a new file. If 338c689b4f1SLaszlo Ersek * that succeeds, we're free to set any file-mode bits on it. (The 339c689b4f1SLaszlo Ersek * motivation is that we want to set those file-mode bits independently 340c689b4f1SLaszlo Ersek * of the current umask.) 341c689b4f1SLaszlo Ersek * 342c689b4f1SLaszlo Ersek * If the exclusive creation fails because the file already exists 343c689b4f1SLaszlo Ersek * (EEXIST is not possible for any other reason), we just attempt to 344c689b4f1SLaszlo Ersek * open the file, but in this case we won't be allowed to change the 345c689b4f1SLaszlo Ersek * file-mode bits on the preexistent file. 346c689b4f1SLaszlo Ersek * 347c689b4f1SLaszlo Ersek * The pathname should never disappear between the two open()s in 348c689b4f1SLaszlo Ersek * practice. If it happens, then someone very likely tried to race us. 349c689b4f1SLaszlo Ersek * In this case just go ahead and report the ENOENT from the second 350c689b4f1SLaszlo Ersek * open() to the caller. 351c689b4f1SLaszlo Ersek * 352c689b4f1SLaszlo Ersek * If the caller wants to open a preexistent file, then the first 353c689b4f1SLaszlo Ersek * open() is decisive and its third argument is ignored, and the second 354c689b4f1SLaszlo Ersek * open() and the fchmod() are never called. 355c689b4f1SLaszlo Ersek */ 356c689b4f1SLaszlo Ersek fd = open(path, oflag | ((oflag & O_CREAT) ? O_EXCL : 0), 0); 357c689b4f1SLaszlo Ersek if (fd == -1 && errno == EEXIST) { 358c689b4f1SLaszlo Ersek oflag &= ~(unsigned)O_CREAT; 359c689b4f1SLaszlo Ersek fd = open(path, oflag); 360c689b4f1SLaszlo Ersek } 361c689b4f1SLaszlo Ersek 362c689b4f1SLaszlo Ersek if (fd == -1) { 363c689b4f1SLaszlo Ersek error_setg_errno(&local_err, errno, "failed to open file '%s' " 364c689b4f1SLaszlo Ersek "(mode: '%s')", path, mode); 365c689b4f1SLaszlo Ersek } else { 366c689b4f1SLaszlo Ersek qemu_set_cloexec(fd); 367c689b4f1SLaszlo Ersek 368c689b4f1SLaszlo Ersek if ((oflag & O_CREAT) && fchmod(fd, DEFAULT_NEW_FILE_MODE) == -1) { 369c689b4f1SLaszlo Ersek error_setg_errno(&local_err, errno, "failed to set permission " 370c689b4f1SLaszlo Ersek "0%03o on new file '%s' (mode: '%s')", 371c689b4f1SLaszlo Ersek (unsigned)DEFAULT_NEW_FILE_MODE, path, mode); 372c689b4f1SLaszlo Ersek } else { 373c689b4f1SLaszlo Ersek FILE *f; 374c689b4f1SLaszlo Ersek 375c689b4f1SLaszlo Ersek f = fdopen(fd, mode); 376c689b4f1SLaszlo Ersek if (f == NULL) { 377c689b4f1SLaszlo Ersek error_setg_errno(&local_err, errno, "failed to associate " 378c689b4f1SLaszlo Ersek "stdio stream with file descriptor %d, " 379c689b4f1SLaszlo Ersek "file '%s' (mode: '%s')", fd, path, mode); 380c689b4f1SLaszlo Ersek } else { 381c689b4f1SLaszlo Ersek return f; 382c689b4f1SLaszlo Ersek } 383c689b4f1SLaszlo Ersek } 384c689b4f1SLaszlo Ersek 385c689b4f1SLaszlo Ersek close(fd); 3862b720018SLaszlo Ersek if (oflag & O_CREAT) { 3872b720018SLaszlo Ersek unlink(path); 3882b720018SLaszlo Ersek } 389c689b4f1SLaszlo Ersek } 390c689b4f1SLaszlo Ersek } 391c689b4f1SLaszlo Ersek 39277dbc81bSMarkus Armbruster error_propagate(errp, local_err); 393c689b4f1SLaszlo Ersek return NULL; 394c689b4f1SLaszlo Ersek } 395c689b4f1SLaszlo Ersek 39677dbc81bSMarkus Armbruster int64_t qmp_guest_file_open(const char *path, bool has_mode, const char *mode, 39777dbc81bSMarkus Armbruster Error **errp) 398c216e5adSMichael Roth { 399c216e5adSMichael Roth FILE *fh; 400c689b4f1SLaszlo Ersek Error *local_err = NULL; 40185b6f6f5SSimon Zolin int64_t handle; 402c216e5adSMichael Roth 403c216e5adSMichael Roth if (!has_mode) { 404c216e5adSMichael Roth mode = "r"; 405c216e5adSMichael Roth } 406c216e5adSMichael Roth slog("guest-file-open called, filepath: %s, mode: %s", path, mode); 407c689b4f1SLaszlo Ersek fh = safe_open_or_create(path, mode, &local_err); 408c689b4f1SLaszlo Ersek if (local_err != NULL) { 40977dbc81bSMarkus Armbruster error_propagate(errp, local_err); 410c216e5adSMichael Roth return -1; 411c216e5adSMichael Roth } 412c216e5adSMichael Roth 413c216e5adSMichael Roth /* set fd non-blocking to avoid common use cases (like reading from a 414c216e5adSMichael Roth * named pipe) from hanging the agent 415c216e5adSMichael Roth */ 41612505396SDenis V. Lunev qemu_set_nonblock(fileno(fh)); 417c216e5adSMichael Roth 41877dbc81bSMarkus Armbruster handle = guest_file_handle_add(fh, errp); 419a903f40cSMarkus Armbruster if (handle < 0) { 42039097dafSMichael Roth fclose(fh); 42139097dafSMichael Roth return -1; 42239097dafSMichael Roth } 42339097dafSMichael Roth 424d607a523SStefan Weil slog("guest-file-open, handle: %" PRId64, handle); 42539097dafSMichael Roth return handle; 426c216e5adSMichael Roth } 427c216e5adSMichael Roth 42877dbc81bSMarkus Armbruster void qmp_guest_file_close(int64_t handle, Error **errp) 429c216e5adSMichael Roth { 43077dbc81bSMarkus Armbruster GuestFileHandle *gfh = guest_file_handle_find(handle, errp); 431c216e5adSMichael Roth int ret; 432c216e5adSMichael Roth 433d607a523SStefan Weil slog("guest-file-close called, handle: %" PRId64, handle); 434c216e5adSMichael Roth if (!gfh) { 435c216e5adSMichael Roth return; 436c216e5adSMichael Roth } 437c216e5adSMichael Roth 438c216e5adSMichael Roth ret = fclose(gfh->fh); 4393ac4b7c5SLuiz Capitulino if (ret == EOF) { 44077dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to close handle"); 441c216e5adSMichael Roth return; 442c216e5adSMichael Roth } 443c216e5adSMichael Roth 444c216e5adSMichael Roth QTAILQ_REMOVE(&guest_file_state.filehandles, gfh, next); 445c216e5adSMichael Roth g_free(gfh); 446c216e5adSMichael Roth } 447c216e5adSMichael Roth 448c216e5adSMichael Roth struct GuestFileRead *qmp_guest_file_read(int64_t handle, bool has_count, 44977dbc81bSMarkus Armbruster int64_t count, Error **errp) 450c216e5adSMichael Roth { 45177dbc81bSMarkus Armbruster GuestFileHandle *gfh = guest_file_handle_find(handle, errp); 452c216e5adSMichael Roth GuestFileRead *read_data = NULL; 453c216e5adSMichael Roth guchar *buf; 454c216e5adSMichael Roth FILE *fh; 455c216e5adSMichael Roth size_t read_count; 456c216e5adSMichael Roth 457c216e5adSMichael Roth if (!gfh) { 458c216e5adSMichael Roth return NULL; 459c216e5adSMichael Roth } 460c216e5adSMichael Roth 461c216e5adSMichael Roth if (!has_count) { 462c216e5adSMichael Roth count = QGA_READ_COUNT_DEFAULT; 463c216e5adSMichael Roth } else if (count < 0) { 46477dbc81bSMarkus Armbruster error_setg(errp, "value '%" PRId64 "' is invalid for argument count", 465db3edb66SLuiz Capitulino count); 466c216e5adSMichael Roth return NULL; 467c216e5adSMichael Roth } 468c216e5adSMichael Roth 469c216e5adSMichael Roth fh = gfh->fh; 470*895b00f6SMarc-André Lureau 471*895b00f6SMarc-André Lureau /* explicitly flush when switching from writing to reading */ 472*895b00f6SMarc-André Lureau if (gfh->state == RW_STATE_WRITING) { 473*895b00f6SMarc-André Lureau int ret = fflush(fh); 474*895b00f6SMarc-André Lureau if (ret == EOF) { 475*895b00f6SMarc-André Lureau error_setg_errno(errp, errno, "failed to flush file"); 476*895b00f6SMarc-André Lureau return NULL; 477*895b00f6SMarc-André Lureau } 478*895b00f6SMarc-André Lureau gfh->state = RW_STATE_NEW; 479*895b00f6SMarc-André Lureau } 480*895b00f6SMarc-André Lureau 481c216e5adSMichael Roth buf = g_malloc0(count+1); 482c216e5adSMichael Roth read_count = fread(buf, 1, count, fh); 483c216e5adSMichael Roth if (ferror(fh)) { 48477dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to read file"); 485d607a523SStefan Weil slog("guest-file-read failed, handle: %" PRId64, handle); 486c216e5adSMichael Roth } else { 487c216e5adSMichael Roth buf[read_count] = 0; 488f3a06403SMarkus Armbruster read_data = g_new0(GuestFileRead, 1); 489c216e5adSMichael Roth read_data->count = read_count; 490c216e5adSMichael Roth read_data->eof = feof(fh); 491c216e5adSMichael Roth if (read_count) { 492c216e5adSMichael Roth read_data->buf_b64 = g_base64_encode(buf, read_count); 493c216e5adSMichael Roth } 494*895b00f6SMarc-André Lureau gfh->state = RW_STATE_READING; 495c216e5adSMichael Roth } 496c216e5adSMichael Roth g_free(buf); 497c216e5adSMichael Roth clearerr(fh); 498c216e5adSMichael Roth 499c216e5adSMichael Roth return read_data; 500c216e5adSMichael Roth } 501c216e5adSMichael Roth 502c216e5adSMichael Roth GuestFileWrite *qmp_guest_file_write(int64_t handle, const char *buf_b64, 50377dbc81bSMarkus Armbruster bool has_count, int64_t count, 50477dbc81bSMarkus Armbruster Error **errp) 505c216e5adSMichael Roth { 506c216e5adSMichael Roth GuestFileWrite *write_data = NULL; 507c216e5adSMichael Roth guchar *buf; 508c216e5adSMichael Roth gsize buf_len; 509c216e5adSMichael Roth int write_count; 51077dbc81bSMarkus Armbruster GuestFileHandle *gfh = guest_file_handle_find(handle, errp); 511c216e5adSMichael Roth FILE *fh; 512c216e5adSMichael Roth 513c216e5adSMichael Roth if (!gfh) { 514c216e5adSMichael Roth return NULL; 515c216e5adSMichael Roth } 516c216e5adSMichael Roth 517c216e5adSMichael Roth fh = gfh->fh; 518*895b00f6SMarc-André Lureau 519*895b00f6SMarc-André Lureau if (gfh->state == RW_STATE_READING) { 520*895b00f6SMarc-André Lureau int ret = fseek(fh, 0, SEEK_CUR); 521*895b00f6SMarc-André Lureau if (ret == -1) { 522*895b00f6SMarc-André Lureau error_setg_errno(errp, errno, "failed to seek file"); 523*895b00f6SMarc-André Lureau return NULL; 524*895b00f6SMarc-André Lureau } 525*895b00f6SMarc-André Lureau gfh->state = RW_STATE_NEW; 526*895b00f6SMarc-André Lureau } 527*895b00f6SMarc-André Lureau 528c216e5adSMichael Roth buf = g_base64_decode(buf_b64, &buf_len); 529c216e5adSMichael Roth 530c216e5adSMichael Roth if (!has_count) { 531c216e5adSMichael Roth count = buf_len; 532c216e5adSMichael Roth } else if (count < 0 || count > buf_len) { 53377dbc81bSMarkus Armbruster error_setg(errp, "value '%" PRId64 "' is invalid for argument count", 534db3edb66SLuiz Capitulino count); 535c216e5adSMichael Roth g_free(buf); 536c216e5adSMichael Roth return NULL; 537c216e5adSMichael Roth } 538c216e5adSMichael Roth 539c216e5adSMichael Roth write_count = fwrite(buf, 1, count, fh); 540c216e5adSMichael Roth if (ferror(fh)) { 54177dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to write to file"); 542d607a523SStefan Weil slog("guest-file-write failed, handle: %" PRId64, handle); 543c216e5adSMichael Roth } else { 544f3a06403SMarkus Armbruster write_data = g_new0(GuestFileWrite, 1); 545c216e5adSMichael Roth write_data->count = write_count; 546c216e5adSMichael Roth write_data->eof = feof(fh); 547*895b00f6SMarc-André Lureau gfh->state = RW_STATE_WRITING; 548c216e5adSMichael Roth } 549c216e5adSMichael Roth g_free(buf); 550c216e5adSMichael Roth clearerr(fh); 551c216e5adSMichael Roth 552c216e5adSMichael Roth return write_data; 553c216e5adSMichael Roth } 554c216e5adSMichael Roth 555c216e5adSMichael Roth struct GuestFileSeek *qmp_guest_file_seek(int64_t handle, int64_t offset, 55677dbc81bSMarkus Armbruster int64_t whence, Error **errp) 557c216e5adSMichael Roth { 55877dbc81bSMarkus Armbruster GuestFileHandle *gfh = guest_file_handle_find(handle, errp); 559c216e5adSMichael Roth GuestFileSeek *seek_data = NULL; 560c216e5adSMichael Roth FILE *fh; 561c216e5adSMichael Roth int ret; 562c216e5adSMichael Roth 563c216e5adSMichael Roth if (!gfh) { 564c216e5adSMichael Roth return NULL; 565c216e5adSMichael Roth } 566c216e5adSMichael Roth 567c216e5adSMichael Roth fh = gfh->fh; 568c216e5adSMichael Roth ret = fseek(fh, offset, whence); 569c216e5adSMichael Roth if (ret == -1) { 57077dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to seek file"); 571*895b00f6SMarc-André Lureau if (errno == ESPIPE) { 572*895b00f6SMarc-André Lureau /* file is non-seekable, stdio shouldn't be buffering anyways */ 573*895b00f6SMarc-André Lureau gfh->state = RW_STATE_NEW; 574*895b00f6SMarc-André Lureau } 575c216e5adSMichael Roth } else { 57610b7c5ddSMarkus Armbruster seek_data = g_new0(GuestFileSeek, 1); 577c216e5adSMichael Roth seek_data->position = ftell(fh); 578c216e5adSMichael Roth seek_data->eof = feof(fh); 579*895b00f6SMarc-André Lureau gfh->state = RW_STATE_NEW; 580c216e5adSMichael Roth } 581c216e5adSMichael Roth clearerr(fh); 582c216e5adSMichael Roth 583c216e5adSMichael Roth return seek_data; 584c216e5adSMichael Roth } 585c216e5adSMichael Roth 58677dbc81bSMarkus Armbruster void qmp_guest_file_flush(int64_t handle, Error **errp) 587c216e5adSMichael Roth { 58877dbc81bSMarkus Armbruster GuestFileHandle *gfh = guest_file_handle_find(handle, errp); 589c216e5adSMichael Roth FILE *fh; 590c216e5adSMichael Roth int ret; 591c216e5adSMichael Roth 592c216e5adSMichael Roth if (!gfh) { 593c216e5adSMichael Roth return; 594c216e5adSMichael Roth } 595c216e5adSMichael Roth 596c216e5adSMichael Roth fh = gfh->fh; 597c216e5adSMichael Roth ret = fflush(fh); 598c216e5adSMichael Roth if (ret == EOF) { 59977dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to flush file"); 600*895b00f6SMarc-André Lureau } else { 601*895b00f6SMarc-André Lureau gfh->state = RW_STATE_NEW; 602c216e5adSMichael Roth } 603c216e5adSMichael Roth } 604c216e5adSMichael Roth 605e72c3f2eSMichael Roth /* linux-specific implementations. avoid this if at all possible. */ 606e72c3f2eSMichael Roth #if defined(__linux__) 607e72c3f2eSMichael Roth 608eab5fd59SPaolo Bonzini #if defined(CONFIG_FSFREEZE) || defined(CONFIG_FSTRIM) 609af02203fSPaolo Bonzini typedef struct FsMount { 610c216e5adSMichael Roth char *dirname; 611c216e5adSMichael Roth char *devtype; 61246d4c572STomoki Sekiyama unsigned int devmajor, devminor; 613af02203fSPaolo Bonzini QTAILQ_ENTRY(FsMount) next; 614af02203fSPaolo Bonzini } FsMount; 615c216e5adSMichael Roth 616e5d9adbdSTomoki Sekiyama typedef QTAILQ_HEAD(FsMountList, FsMount) FsMountList; 6179e8aded4SMichael Roth 618af02203fSPaolo Bonzini static void free_fs_mount_list(FsMountList *mounts) 619c216e5adSMichael Roth { 620af02203fSPaolo Bonzini FsMount *mount, *temp; 621c216e5adSMichael Roth 6229e8aded4SMichael Roth if (!mounts) { 6239e8aded4SMichael Roth return; 6249e8aded4SMichael Roth } 6259e8aded4SMichael Roth 6269e8aded4SMichael Roth QTAILQ_FOREACH_SAFE(mount, mounts, next, temp) { 6279e8aded4SMichael Roth QTAILQ_REMOVE(mounts, mount, next); 628c216e5adSMichael Roth g_free(mount->dirname); 629c216e5adSMichael Roth g_free(mount->devtype); 630c216e5adSMichael Roth g_free(mount); 631c216e5adSMichael Roth } 6329e8aded4SMichael Roth } 6339e8aded4SMichael Roth 63446d4c572STomoki Sekiyama static int dev_major_minor(const char *devpath, 63546d4c572STomoki Sekiyama unsigned int *devmajor, unsigned int *devminor) 63646d4c572STomoki Sekiyama { 63746d4c572STomoki Sekiyama struct stat st; 63846d4c572STomoki Sekiyama 63946d4c572STomoki Sekiyama *devmajor = 0; 64046d4c572STomoki Sekiyama *devminor = 0; 64146d4c572STomoki Sekiyama 64246d4c572STomoki Sekiyama if (stat(devpath, &st) < 0) { 64346d4c572STomoki Sekiyama slog("failed to stat device file '%s': %s", devpath, strerror(errno)); 64446d4c572STomoki Sekiyama return -1; 64546d4c572STomoki Sekiyama } 64646d4c572STomoki Sekiyama if (S_ISDIR(st.st_mode)) { 64746d4c572STomoki Sekiyama /* It is bind mount */ 64846d4c572STomoki Sekiyama return -2; 64946d4c572STomoki Sekiyama } 65046d4c572STomoki Sekiyama if (S_ISBLK(st.st_mode)) { 65146d4c572STomoki Sekiyama *devmajor = major(st.st_rdev); 65246d4c572STomoki Sekiyama *devminor = minor(st.st_rdev); 65346d4c572STomoki Sekiyama return 0; 65446d4c572STomoki Sekiyama } 65546d4c572STomoki Sekiyama return -1; 65646d4c572STomoki Sekiyama } 65746d4c572STomoki Sekiyama 6589e8aded4SMichael Roth /* 6599e8aded4SMichael Roth * Walk the mount table and build a list of local file systems 6609e8aded4SMichael Roth */ 66146d4c572STomoki Sekiyama static void build_fs_mount_list_from_mtab(FsMountList *mounts, Error **errp) 6629e8aded4SMichael Roth { 6639e8aded4SMichael Roth struct mntent *ment; 664af02203fSPaolo Bonzini FsMount *mount; 6659e2fa418SMichael Roth char const *mtab = "/proc/self/mounts"; 6669e8aded4SMichael Roth FILE *fp; 66746d4c572STomoki Sekiyama unsigned int devmajor, devminor; 668c216e5adSMichael Roth 669c216e5adSMichael Roth fp = setmntent(mtab, "r"); 670c216e5adSMichael Roth if (!fp) { 67177dbc81bSMarkus Armbruster error_setg(errp, "failed to open mtab file: '%s'", mtab); 672261551d1SLuiz Capitulino return; 673c216e5adSMichael Roth } 674c216e5adSMichael Roth 675c216e5adSMichael Roth while ((ment = getmntent(fp))) { 676c216e5adSMichael Roth /* 677c216e5adSMichael Roth * An entry which device name doesn't start with a '/' is 678c216e5adSMichael Roth * either a dummy file system or a network file system. 679c216e5adSMichael Roth * Add special handling for smbfs and cifs as is done by 680c216e5adSMichael Roth * coreutils as well. 681c216e5adSMichael Roth */ 682c216e5adSMichael Roth if ((ment->mnt_fsname[0] != '/') || 683c216e5adSMichael Roth (strcmp(ment->mnt_type, "smbfs") == 0) || 684c216e5adSMichael Roth (strcmp(ment->mnt_type, "cifs") == 0)) { 685c216e5adSMichael Roth continue; 686c216e5adSMichael Roth } 68746d4c572STomoki Sekiyama if (dev_major_minor(ment->mnt_fsname, &devmajor, &devminor) == -2) { 68846d4c572STomoki Sekiyama /* Skip bind mounts */ 68946d4c572STomoki Sekiyama continue; 69046d4c572STomoki Sekiyama } 691c216e5adSMichael Roth 692f3a06403SMarkus Armbruster mount = g_new0(FsMount, 1); 693c216e5adSMichael Roth mount->dirname = g_strdup(ment->mnt_dir); 694c216e5adSMichael Roth mount->devtype = g_strdup(ment->mnt_type); 69546d4c572STomoki Sekiyama mount->devmajor = devmajor; 69646d4c572STomoki Sekiyama mount->devminor = devminor; 697c216e5adSMichael Roth 6989e8aded4SMichael Roth QTAILQ_INSERT_TAIL(mounts, mount, next); 699c216e5adSMichael Roth } 700c216e5adSMichael Roth 701c216e5adSMichael Roth endmntent(fp); 702c216e5adSMichael Roth } 70346d4c572STomoki Sekiyama 70446d4c572STomoki Sekiyama static void decode_mntname(char *name, int len) 70546d4c572STomoki Sekiyama { 70646d4c572STomoki Sekiyama int i, j = 0; 70746d4c572STomoki Sekiyama for (i = 0; i <= len; i++) { 70846d4c572STomoki Sekiyama if (name[i] != '\\') { 70946d4c572STomoki Sekiyama name[j++] = name[i]; 71046d4c572STomoki Sekiyama } else if (name[i + 1] == '\\') { 71146d4c572STomoki Sekiyama name[j++] = '\\'; 71246d4c572STomoki Sekiyama i++; 71346d4c572STomoki Sekiyama } else if (name[i + 1] >= '0' && name[i + 1] <= '3' && 71446d4c572STomoki Sekiyama name[i + 2] >= '0' && name[i + 2] <= '7' && 71546d4c572STomoki Sekiyama name[i + 3] >= '0' && name[i + 3] <= '7') { 71646d4c572STomoki Sekiyama name[j++] = (name[i + 1] - '0') * 64 + 71746d4c572STomoki Sekiyama (name[i + 2] - '0') * 8 + 71846d4c572STomoki Sekiyama (name[i + 3] - '0'); 71946d4c572STomoki Sekiyama i += 3; 72046d4c572STomoki Sekiyama } else { 72146d4c572STomoki Sekiyama name[j++] = name[i]; 72246d4c572STomoki Sekiyama } 72346d4c572STomoki Sekiyama } 72446d4c572STomoki Sekiyama } 72546d4c572STomoki Sekiyama 72646d4c572STomoki Sekiyama static void build_fs_mount_list(FsMountList *mounts, Error **errp) 72746d4c572STomoki Sekiyama { 72846d4c572STomoki Sekiyama FsMount *mount; 72946d4c572STomoki Sekiyama char const *mountinfo = "/proc/self/mountinfo"; 73046d4c572STomoki Sekiyama FILE *fp; 73146d4c572STomoki Sekiyama char *line = NULL, *dash; 73246d4c572STomoki Sekiyama size_t n; 73346d4c572STomoki Sekiyama char check; 73446d4c572STomoki Sekiyama unsigned int devmajor, devminor; 73546d4c572STomoki Sekiyama int ret, dir_s, dir_e, type_s, type_e, dev_s, dev_e; 73646d4c572STomoki Sekiyama 73746d4c572STomoki Sekiyama fp = fopen(mountinfo, "r"); 73846d4c572STomoki Sekiyama if (!fp) { 73946d4c572STomoki Sekiyama build_fs_mount_list_from_mtab(mounts, errp); 74046d4c572STomoki Sekiyama return; 74146d4c572STomoki Sekiyama } 74246d4c572STomoki Sekiyama 74346d4c572STomoki Sekiyama while (getline(&line, &n, fp) != -1) { 74446d4c572STomoki Sekiyama ret = sscanf(line, "%*u %*u %u:%u %*s %n%*s%n%c", 74546d4c572STomoki Sekiyama &devmajor, &devminor, &dir_s, &dir_e, &check); 74646d4c572STomoki Sekiyama if (ret < 3) { 74746d4c572STomoki Sekiyama continue; 74846d4c572STomoki Sekiyama } 74946d4c572STomoki Sekiyama dash = strstr(line + dir_e, " - "); 75046d4c572STomoki Sekiyama if (!dash) { 75146d4c572STomoki Sekiyama continue; 75246d4c572STomoki Sekiyama } 75346d4c572STomoki Sekiyama ret = sscanf(dash, " - %n%*s%n %n%*s%n%c", 75446d4c572STomoki Sekiyama &type_s, &type_e, &dev_s, &dev_e, &check); 75546d4c572STomoki Sekiyama if (ret < 1) { 75646d4c572STomoki Sekiyama continue; 75746d4c572STomoki Sekiyama } 75846d4c572STomoki Sekiyama line[dir_e] = 0; 75946d4c572STomoki Sekiyama dash[type_e] = 0; 76046d4c572STomoki Sekiyama dash[dev_e] = 0; 76146d4c572STomoki Sekiyama decode_mntname(line + dir_s, dir_e - dir_s); 76246d4c572STomoki Sekiyama decode_mntname(dash + dev_s, dev_e - dev_s); 76346d4c572STomoki Sekiyama if (devmajor == 0) { 76446d4c572STomoki Sekiyama /* btrfs reports major number = 0 */ 76546d4c572STomoki Sekiyama if (strcmp("btrfs", dash + type_s) != 0 || 76646d4c572STomoki Sekiyama dev_major_minor(dash + dev_s, &devmajor, &devminor) < 0) { 76746d4c572STomoki Sekiyama continue; 76846d4c572STomoki Sekiyama } 76946d4c572STomoki Sekiyama } 77046d4c572STomoki Sekiyama 771f3a06403SMarkus Armbruster mount = g_new0(FsMount, 1); 77246d4c572STomoki Sekiyama mount->dirname = g_strdup(line + dir_s); 77346d4c572STomoki Sekiyama mount->devtype = g_strdup(dash + type_s); 77446d4c572STomoki Sekiyama mount->devmajor = devmajor; 77546d4c572STomoki Sekiyama mount->devminor = devminor; 77646d4c572STomoki Sekiyama 77746d4c572STomoki Sekiyama QTAILQ_INSERT_TAIL(mounts, mount, next); 77846d4c572STomoki Sekiyama } 77946d4c572STomoki Sekiyama free(line); 78046d4c572STomoki Sekiyama 78146d4c572STomoki Sekiyama fclose(fp); 78246d4c572STomoki Sekiyama } 783eab5fd59SPaolo Bonzini #endif 784eab5fd59SPaolo Bonzini 785eab5fd59SPaolo Bonzini #if defined(CONFIG_FSFREEZE) 786c216e5adSMichael Roth 78746d4c572STomoki Sekiyama static char *get_pci_driver(char const *syspath, int pathlen, Error **errp) 78846d4c572STomoki Sekiyama { 78946d4c572STomoki Sekiyama char *path; 79046d4c572STomoki Sekiyama char *dpath; 79146d4c572STomoki Sekiyama char *driver = NULL; 79246d4c572STomoki Sekiyama char buf[PATH_MAX]; 79346d4c572STomoki Sekiyama ssize_t len; 79446d4c572STomoki Sekiyama 79546d4c572STomoki Sekiyama path = g_strndup(syspath, pathlen); 79646d4c572STomoki Sekiyama dpath = g_strdup_printf("%s/driver", path); 79746d4c572STomoki Sekiyama len = readlink(dpath, buf, sizeof(buf) - 1); 79846d4c572STomoki Sekiyama if (len != -1) { 79946d4c572STomoki Sekiyama buf[len] = 0; 80046d4c572STomoki Sekiyama driver = g_strdup(basename(buf)); 80146d4c572STomoki Sekiyama } 80246d4c572STomoki Sekiyama g_free(dpath); 80346d4c572STomoki Sekiyama g_free(path); 80446d4c572STomoki Sekiyama return driver; 80546d4c572STomoki Sekiyama } 80646d4c572STomoki Sekiyama 80746d4c572STomoki Sekiyama static int compare_uint(const void *_a, const void *_b) 80846d4c572STomoki Sekiyama { 80946d4c572STomoki Sekiyama unsigned int a = *(unsigned int *)_a; 81046d4c572STomoki Sekiyama unsigned int b = *(unsigned int *)_b; 81146d4c572STomoki Sekiyama 81246d4c572STomoki Sekiyama return a < b ? -1 : a > b ? 1 : 0; 81346d4c572STomoki Sekiyama } 81446d4c572STomoki Sekiyama 81546d4c572STomoki Sekiyama /* Walk the specified sysfs and build a sorted list of host or ata numbers */ 81646d4c572STomoki Sekiyama static int build_hosts(char const *syspath, char const *host, bool ata, 81746d4c572STomoki Sekiyama unsigned int *hosts, int hosts_max, Error **errp) 81846d4c572STomoki Sekiyama { 81946d4c572STomoki Sekiyama char *path; 82046d4c572STomoki Sekiyama DIR *dir; 82146d4c572STomoki Sekiyama struct dirent *entry; 82246d4c572STomoki Sekiyama int i = 0; 82346d4c572STomoki Sekiyama 82446d4c572STomoki Sekiyama path = g_strndup(syspath, host - syspath); 82546d4c572STomoki Sekiyama dir = opendir(path); 82646d4c572STomoki Sekiyama if (!dir) { 82746d4c572STomoki Sekiyama error_setg_errno(errp, errno, "opendir(\"%s\")", path); 82846d4c572STomoki Sekiyama g_free(path); 82946d4c572STomoki Sekiyama return -1; 83046d4c572STomoki Sekiyama } 83146d4c572STomoki Sekiyama 83246d4c572STomoki Sekiyama while (i < hosts_max) { 83346d4c572STomoki Sekiyama entry = readdir(dir); 83446d4c572STomoki Sekiyama if (!entry) { 83546d4c572STomoki Sekiyama break; 83646d4c572STomoki Sekiyama } 83746d4c572STomoki Sekiyama if (ata && sscanf(entry->d_name, "ata%d", hosts + i) == 1) { 83846d4c572STomoki Sekiyama ++i; 83946d4c572STomoki Sekiyama } else if (!ata && sscanf(entry->d_name, "host%d", hosts + i) == 1) { 84046d4c572STomoki Sekiyama ++i; 84146d4c572STomoki Sekiyama } 84246d4c572STomoki Sekiyama } 84346d4c572STomoki Sekiyama 84446d4c572STomoki Sekiyama qsort(hosts, i, sizeof(hosts[0]), compare_uint); 84546d4c572STomoki Sekiyama 84646d4c572STomoki Sekiyama g_free(path); 84746d4c572STomoki Sekiyama closedir(dir); 84846d4c572STomoki Sekiyama return i; 84946d4c572STomoki Sekiyama } 85046d4c572STomoki Sekiyama 85146d4c572STomoki Sekiyama /* Store disk device info specified by @sysfs into @fs */ 85246d4c572STomoki Sekiyama static void build_guest_fsinfo_for_real_device(char const *syspath, 85346d4c572STomoki Sekiyama GuestFilesystemInfo *fs, 85446d4c572STomoki Sekiyama Error **errp) 85546d4c572STomoki Sekiyama { 85646d4c572STomoki Sekiyama unsigned int pci[4], host, hosts[8], tgt[3]; 85746d4c572STomoki Sekiyama int i, nhosts = 0, pcilen; 85846d4c572STomoki Sekiyama GuestDiskAddress *disk; 85946d4c572STomoki Sekiyama GuestPCIAddress *pciaddr; 86046d4c572STomoki Sekiyama GuestDiskAddressList *list = NULL; 86146d4c572STomoki Sekiyama bool has_ata = false, has_host = false, has_tgt = false; 86246d4c572STomoki Sekiyama char *p, *q, *driver = NULL; 86346d4c572STomoki Sekiyama 86446d4c572STomoki Sekiyama p = strstr(syspath, "/devices/pci"); 86546d4c572STomoki Sekiyama if (!p || sscanf(p + 12, "%*x:%*x/%x:%x:%x.%x%n", 86646d4c572STomoki Sekiyama pci, pci + 1, pci + 2, pci + 3, &pcilen) < 4) { 86746d4c572STomoki Sekiyama g_debug("only pci device is supported: sysfs path \"%s\"", syspath); 86846d4c572STomoki Sekiyama return; 86946d4c572STomoki Sekiyama } 87046d4c572STomoki Sekiyama 87146d4c572STomoki Sekiyama driver = get_pci_driver(syspath, (p + 12 + pcilen) - syspath, errp); 87246d4c572STomoki Sekiyama if (!driver) { 87346d4c572STomoki Sekiyama goto cleanup; 87446d4c572STomoki Sekiyama } 87546d4c572STomoki Sekiyama 87646d4c572STomoki Sekiyama p = strstr(syspath, "/target"); 87746d4c572STomoki Sekiyama if (p && sscanf(p + 7, "%*u:%*u:%*u/%*u:%u:%u:%u", 87846d4c572STomoki Sekiyama tgt, tgt + 1, tgt + 2) == 3) { 87946d4c572STomoki Sekiyama has_tgt = true; 88046d4c572STomoki Sekiyama } 88146d4c572STomoki Sekiyama 88246d4c572STomoki Sekiyama p = strstr(syspath, "/ata"); 88346d4c572STomoki Sekiyama if (p) { 88446d4c572STomoki Sekiyama q = p + 4; 88546d4c572STomoki Sekiyama has_ata = true; 88646d4c572STomoki Sekiyama } else { 88746d4c572STomoki Sekiyama p = strstr(syspath, "/host"); 88846d4c572STomoki Sekiyama q = p + 5; 88946d4c572STomoki Sekiyama } 89046d4c572STomoki Sekiyama if (p && sscanf(q, "%u", &host) == 1) { 89146d4c572STomoki Sekiyama has_host = true; 89246d4c572STomoki Sekiyama nhosts = build_hosts(syspath, p, has_ata, hosts, 89346d4c572STomoki Sekiyama sizeof(hosts) / sizeof(hosts[0]), errp); 89446d4c572STomoki Sekiyama if (nhosts < 0) { 89546d4c572STomoki Sekiyama goto cleanup; 89646d4c572STomoki Sekiyama } 89746d4c572STomoki Sekiyama } 89846d4c572STomoki Sekiyama 89946d4c572STomoki Sekiyama pciaddr = g_malloc0(sizeof(*pciaddr)); 90046d4c572STomoki Sekiyama pciaddr->domain = pci[0]; 90146d4c572STomoki Sekiyama pciaddr->bus = pci[1]; 90246d4c572STomoki Sekiyama pciaddr->slot = pci[2]; 90346d4c572STomoki Sekiyama pciaddr->function = pci[3]; 90446d4c572STomoki Sekiyama 90546d4c572STomoki Sekiyama disk = g_malloc0(sizeof(*disk)); 90646d4c572STomoki Sekiyama disk->pci_controller = pciaddr; 90746d4c572STomoki Sekiyama 90846d4c572STomoki Sekiyama list = g_malloc0(sizeof(*list)); 90946d4c572STomoki Sekiyama list->value = disk; 91046d4c572STomoki Sekiyama 91146d4c572STomoki Sekiyama if (strcmp(driver, "ata_piix") == 0) { 91246d4c572STomoki Sekiyama /* a host per ide bus, target*:0:<unit>:0 */ 91346d4c572STomoki Sekiyama if (!has_host || !has_tgt) { 91446d4c572STomoki Sekiyama g_debug("invalid sysfs path '%s' (driver '%s')", syspath, driver); 91546d4c572STomoki Sekiyama goto cleanup; 91646d4c572STomoki Sekiyama } 91746d4c572STomoki Sekiyama for (i = 0; i < nhosts; i++) { 91846d4c572STomoki Sekiyama if (host == hosts[i]) { 91946d4c572STomoki Sekiyama disk->bus_type = GUEST_DISK_BUS_TYPE_IDE; 92046d4c572STomoki Sekiyama disk->bus = i; 92146d4c572STomoki Sekiyama disk->unit = tgt[1]; 92246d4c572STomoki Sekiyama break; 92346d4c572STomoki Sekiyama } 92446d4c572STomoki Sekiyama } 92546d4c572STomoki Sekiyama if (i >= nhosts) { 92646d4c572STomoki Sekiyama g_debug("no host for '%s' (driver '%s')", syspath, driver); 92746d4c572STomoki Sekiyama goto cleanup; 92846d4c572STomoki Sekiyama } 92946d4c572STomoki Sekiyama } else if (strcmp(driver, "sym53c8xx") == 0) { 93046d4c572STomoki Sekiyama /* scsi(LSI Logic): target*:0:<unit>:0 */ 93146d4c572STomoki Sekiyama if (!has_tgt) { 93246d4c572STomoki Sekiyama g_debug("invalid sysfs path '%s' (driver '%s')", syspath, driver); 93346d4c572STomoki Sekiyama goto cleanup; 93446d4c572STomoki Sekiyama } 93546d4c572STomoki Sekiyama disk->bus_type = GUEST_DISK_BUS_TYPE_SCSI; 93646d4c572STomoki Sekiyama disk->unit = tgt[1]; 93746d4c572STomoki Sekiyama } else if (strcmp(driver, "virtio-pci") == 0) { 93846d4c572STomoki Sekiyama if (has_tgt) { 93946d4c572STomoki Sekiyama /* virtio-scsi: target*:0:0:<unit> */ 94046d4c572STomoki Sekiyama disk->bus_type = GUEST_DISK_BUS_TYPE_SCSI; 94146d4c572STomoki Sekiyama disk->unit = tgt[2]; 94246d4c572STomoki Sekiyama } else { 94346d4c572STomoki Sekiyama /* virtio-blk: 1 disk per 1 device */ 94446d4c572STomoki Sekiyama disk->bus_type = GUEST_DISK_BUS_TYPE_VIRTIO; 94546d4c572STomoki Sekiyama } 94646d4c572STomoki Sekiyama } else if (strcmp(driver, "ahci") == 0) { 94746d4c572STomoki Sekiyama /* ahci: 1 host per 1 unit */ 94846d4c572STomoki Sekiyama if (!has_host || !has_tgt) { 94946d4c572STomoki Sekiyama g_debug("invalid sysfs path '%s' (driver '%s')", syspath, driver); 95046d4c572STomoki Sekiyama goto cleanup; 95146d4c572STomoki Sekiyama } 95246d4c572STomoki Sekiyama for (i = 0; i < nhosts; i++) { 95346d4c572STomoki Sekiyama if (host == hosts[i]) { 95446d4c572STomoki Sekiyama disk->unit = i; 95546d4c572STomoki Sekiyama disk->bus_type = GUEST_DISK_BUS_TYPE_SATA; 95646d4c572STomoki Sekiyama break; 95746d4c572STomoki Sekiyama } 95846d4c572STomoki Sekiyama } 95946d4c572STomoki Sekiyama if (i >= nhosts) { 96046d4c572STomoki Sekiyama g_debug("no host for '%s' (driver '%s')", syspath, driver); 96146d4c572STomoki Sekiyama goto cleanup; 96246d4c572STomoki Sekiyama } 96346d4c572STomoki Sekiyama } else { 96446d4c572STomoki Sekiyama g_debug("unknown driver '%s' (sysfs path '%s')", driver, syspath); 96546d4c572STomoki Sekiyama goto cleanup; 96646d4c572STomoki Sekiyama } 96746d4c572STomoki Sekiyama 96846d4c572STomoki Sekiyama list->next = fs->disk; 96946d4c572STomoki Sekiyama fs->disk = list; 97046d4c572STomoki Sekiyama g_free(driver); 97146d4c572STomoki Sekiyama return; 97246d4c572STomoki Sekiyama 97346d4c572STomoki Sekiyama cleanup: 97446d4c572STomoki Sekiyama if (list) { 97546d4c572STomoki Sekiyama qapi_free_GuestDiskAddressList(list); 97646d4c572STomoki Sekiyama } 97746d4c572STomoki Sekiyama g_free(driver); 97846d4c572STomoki Sekiyama } 97946d4c572STomoki Sekiyama 98046d4c572STomoki Sekiyama static void build_guest_fsinfo_for_device(char const *devpath, 98146d4c572STomoki Sekiyama GuestFilesystemInfo *fs, 98246d4c572STomoki Sekiyama Error **errp); 98346d4c572STomoki Sekiyama 98446d4c572STomoki Sekiyama /* Store a list of slave devices of virtual volume specified by @syspath into 98546d4c572STomoki Sekiyama * @fs */ 98646d4c572STomoki Sekiyama static void build_guest_fsinfo_for_virtual_device(char const *syspath, 98746d4c572STomoki Sekiyama GuestFilesystemInfo *fs, 98846d4c572STomoki Sekiyama Error **errp) 98946d4c572STomoki Sekiyama { 99046d4c572STomoki Sekiyama DIR *dir; 99146d4c572STomoki Sekiyama char *dirpath; 992e668d1b8Szhanghailiang struct dirent *entry; 99346d4c572STomoki Sekiyama 99446d4c572STomoki Sekiyama dirpath = g_strdup_printf("%s/slaves", syspath); 99546d4c572STomoki Sekiyama dir = opendir(dirpath); 99646d4c572STomoki Sekiyama if (!dir) { 99746d4c572STomoki Sekiyama error_setg_errno(errp, errno, "opendir(\"%s\")", dirpath); 99846d4c572STomoki Sekiyama g_free(dirpath); 99946d4c572STomoki Sekiyama return; 100046d4c572STomoki Sekiyama } 100146d4c572STomoki Sekiyama 100246d4c572STomoki Sekiyama for (;;) { 1003e668d1b8Szhanghailiang errno = 0; 1004e668d1b8Szhanghailiang entry = readdir(dir); 1005e668d1b8Szhanghailiang if (entry == NULL) { 1006e668d1b8Szhanghailiang if (errno) { 1007e668d1b8Szhanghailiang error_setg_errno(errp, errno, "readdir(\"%s\")", dirpath); 100846d4c572STomoki Sekiyama } 100946d4c572STomoki Sekiyama break; 101046d4c572STomoki Sekiyama } 101146d4c572STomoki Sekiyama 1012e668d1b8Szhanghailiang if (entry->d_type == DT_LNK) { 1013e668d1b8Szhanghailiang char *path; 1014e668d1b8Szhanghailiang 1015e668d1b8Szhanghailiang g_debug(" slave device '%s'", entry->d_name); 1016e668d1b8Szhanghailiang path = g_strdup_printf("%s/slaves/%s", syspath, entry->d_name); 1017e668d1b8Szhanghailiang build_guest_fsinfo_for_device(path, fs, errp); 1018e668d1b8Szhanghailiang g_free(path); 101946d4c572STomoki Sekiyama 102046d4c572STomoki Sekiyama if (*errp) { 102146d4c572STomoki Sekiyama break; 102246d4c572STomoki Sekiyama } 102346d4c572STomoki Sekiyama } 102446d4c572STomoki Sekiyama } 102546d4c572STomoki Sekiyama 1026e668d1b8Szhanghailiang g_free(dirpath); 102746d4c572STomoki Sekiyama closedir(dir); 102846d4c572STomoki Sekiyama } 102946d4c572STomoki Sekiyama 103046d4c572STomoki Sekiyama /* Dispatch to functions for virtual/real device */ 103146d4c572STomoki Sekiyama static void build_guest_fsinfo_for_device(char const *devpath, 103246d4c572STomoki Sekiyama GuestFilesystemInfo *fs, 103346d4c572STomoki Sekiyama Error **errp) 103446d4c572STomoki Sekiyama { 103546d4c572STomoki Sekiyama char *syspath = realpath(devpath, NULL); 103646d4c572STomoki Sekiyama 103746d4c572STomoki Sekiyama if (!syspath) { 103846d4c572STomoki Sekiyama error_setg_errno(errp, errno, "realpath(\"%s\")", devpath); 103946d4c572STomoki Sekiyama return; 104046d4c572STomoki Sekiyama } 104146d4c572STomoki Sekiyama 104246d4c572STomoki Sekiyama if (!fs->name) { 104346d4c572STomoki Sekiyama fs->name = g_strdup(basename(syspath)); 104446d4c572STomoki Sekiyama } 104546d4c572STomoki Sekiyama 104646d4c572STomoki Sekiyama g_debug(" parse sysfs path '%s'", syspath); 104746d4c572STomoki Sekiyama 104846d4c572STomoki Sekiyama if (strstr(syspath, "/devices/virtual/block/")) { 104946d4c572STomoki Sekiyama build_guest_fsinfo_for_virtual_device(syspath, fs, errp); 105046d4c572STomoki Sekiyama } else { 105146d4c572STomoki Sekiyama build_guest_fsinfo_for_real_device(syspath, fs, errp); 105246d4c572STomoki Sekiyama } 105346d4c572STomoki Sekiyama 105446d4c572STomoki Sekiyama free(syspath); 105546d4c572STomoki Sekiyama } 105646d4c572STomoki Sekiyama 105746d4c572STomoki Sekiyama /* Return a list of the disk device(s)' info which @mount lies on */ 105846d4c572STomoki Sekiyama static GuestFilesystemInfo *build_guest_fsinfo(struct FsMount *mount, 105946d4c572STomoki Sekiyama Error **errp) 106046d4c572STomoki Sekiyama { 106146d4c572STomoki Sekiyama GuestFilesystemInfo *fs = g_malloc0(sizeof(*fs)); 106246d4c572STomoki Sekiyama char *devpath = g_strdup_printf("/sys/dev/block/%u:%u", 106346d4c572STomoki Sekiyama mount->devmajor, mount->devminor); 106446d4c572STomoki Sekiyama 106546d4c572STomoki Sekiyama fs->mountpoint = g_strdup(mount->dirname); 106646d4c572STomoki Sekiyama fs->type = g_strdup(mount->devtype); 106746d4c572STomoki Sekiyama build_guest_fsinfo_for_device(devpath, fs, errp); 106846d4c572STomoki Sekiyama 106946d4c572STomoki Sekiyama g_free(devpath); 107046d4c572STomoki Sekiyama return fs; 107146d4c572STomoki Sekiyama } 107246d4c572STomoki Sekiyama 107346d4c572STomoki Sekiyama GuestFilesystemInfoList *qmp_guest_get_fsinfo(Error **errp) 107446d4c572STomoki Sekiyama { 107546d4c572STomoki Sekiyama FsMountList mounts; 107646d4c572STomoki Sekiyama struct FsMount *mount; 107746d4c572STomoki Sekiyama GuestFilesystemInfoList *new, *ret = NULL; 107846d4c572STomoki Sekiyama Error *local_err = NULL; 107946d4c572STomoki Sekiyama 108046d4c572STomoki Sekiyama QTAILQ_INIT(&mounts); 108146d4c572STomoki Sekiyama build_fs_mount_list(&mounts, &local_err); 108246d4c572STomoki Sekiyama if (local_err) { 108346d4c572STomoki Sekiyama error_propagate(errp, local_err); 108446d4c572STomoki Sekiyama return NULL; 108546d4c572STomoki Sekiyama } 108646d4c572STomoki Sekiyama 108746d4c572STomoki Sekiyama QTAILQ_FOREACH(mount, &mounts, next) { 108846d4c572STomoki Sekiyama g_debug("Building guest fsinfo for '%s'", mount->dirname); 108946d4c572STomoki Sekiyama 109046d4c572STomoki Sekiyama new = g_malloc0(sizeof(*ret)); 109146d4c572STomoki Sekiyama new->value = build_guest_fsinfo(mount, &local_err); 109246d4c572STomoki Sekiyama new->next = ret; 109346d4c572STomoki Sekiyama ret = new; 109446d4c572STomoki Sekiyama if (local_err) { 109546d4c572STomoki Sekiyama error_propagate(errp, local_err); 109646d4c572STomoki Sekiyama qapi_free_GuestFilesystemInfoList(ret); 109746d4c572STomoki Sekiyama ret = NULL; 109846d4c572STomoki Sekiyama break; 109946d4c572STomoki Sekiyama } 110046d4c572STomoki Sekiyama } 110146d4c572STomoki Sekiyama 110246d4c572STomoki Sekiyama free_fs_mount_list(&mounts); 110346d4c572STomoki Sekiyama return ret; 110446d4c572STomoki Sekiyama } 110546d4c572STomoki Sekiyama 110646d4c572STomoki Sekiyama 1107ec0f694cSTomoki Sekiyama typedef enum { 1108ec0f694cSTomoki Sekiyama FSFREEZE_HOOK_THAW = 0, 1109ec0f694cSTomoki Sekiyama FSFREEZE_HOOK_FREEZE, 1110ec0f694cSTomoki Sekiyama } FsfreezeHookArg; 1111ec0f694cSTomoki Sekiyama 111213a439ecSStefan Weil static const char *fsfreeze_hook_arg_string[] = { 1113ec0f694cSTomoki Sekiyama "thaw", 1114ec0f694cSTomoki Sekiyama "freeze", 1115ec0f694cSTomoki Sekiyama }; 1116ec0f694cSTomoki Sekiyama 111777dbc81bSMarkus Armbruster static void execute_fsfreeze_hook(FsfreezeHookArg arg, Error **errp) 1118ec0f694cSTomoki Sekiyama { 1119ec0f694cSTomoki Sekiyama int status; 1120ec0f694cSTomoki Sekiyama pid_t pid; 1121ec0f694cSTomoki Sekiyama const char *hook; 1122ec0f694cSTomoki Sekiyama const char *arg_str = fsfreeze_hook_arg_string[arg]; 1123ec0f694cSTomoki Sekiyama Error *local_err = NULL; 1124ec0f694cSTomoki Sekiyama 1125ec0f694cSTomoki Sekiyama hook = ga_fsfreeze_hook(ga_state); 1126ec0f694cSTomoki Sekiyama if (!hook) { 1127ec0f694cSTomoki Sekiyama return; 1128ec0f694cSTomoki Sekiyama } 1129ec0f694cSTomoki Sekiyama if (access(hook, X_OK) != 0) { 113077dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "can't access fsfreeze hook '%s'", hook); 1131ec0f694cSTomoki Sekiyama return; 1132ec0f694cSTomoki Sekiyama } 1133ec0f694cSTomoki Sekiyama 1134ec0f694cSTomoki Sekiyama slog("executing fsfreeze hook with arg '%s'", arg_str); 1135ec0f694cSTomoki Sekiyama pid = fork(); 1136ec0f694cSTomoki Sekiyama if (pid == 0) { 1137ec0f694cSTomoki Sekiyama setsid(); 1138ec0f694cSTomoki Sekiyama reopen_fd_to_null(0); 1139ec0f694cSTomoki Sekiyama reopen_fd_to_null(1); 1140ec0f694cSTomoki Sekiyama reopen_fd_to_null(2); 1141ec0f694cSTomoki Sekiyama 1142ec0f694cSTomoki Sekiyama execle(hook, hook, arg_str, NULL, environ); 1143ec0f694cSTomoki Sekiyama _exit(EXIT_FAILURE); 1144ec0f694cSTomoki Sekiyama } else if (pid < 0) { 114577dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to create child process"); 1146ec0f694cSTomoki Sekiyama return; 1147ec0f694cSTomoki Sekiyama } 1148ec0f694cSTomoki Sekiyama 1149ec0f694cSTomoki Sekiyama ga_wait_child(pid, &status, &local_err); 115084d18f06SMarkus Armbruster if (local_err) { 115177dbc81bSMarkus Armbruster error_propagate(errp, local_err); 1152ec0f694cSTomoki Sekiyama return; 1153ec0f694cSTomoki Sekiyama } 1154ec0f694cSTomoki Sekiyama 1155ec0f694cSTomoki Sekiyama if (!WIFEXITED(status)) { 115677dbc81bSMarkus Armbruster error_setg(errp, "fsfreeze hook has terminated abnormally"); 1157ec0f694cSTomoki Sekiyama return; 1158ec0f694cSTomoki Sekiyama } 1159ec0f694cSTomoki Sekiyama 1160ec0f694cSTomoki Sekiyama status = WEXITSTATUS(status); 1161ec0f694cSTomoki Sekiyama if (status) { 116277dbc81bSMarkus Armbruster error_setg(errp, "fsfreeze hook has failed with status %d", status); 1163ec0f694cSTomoki Sekiyama return; 1164ec0f694cSTomoki Sekiyama } 1165ec0f694cSTomoki Sekiyama } 1166ec0f694cSTomoki Sekiyama 1167c216e5adSMichael Roth /* 1168c216e5adSMichael Roth * Return status of freeze/thaw 1169c216e5adSMichael Roth */ 117077dbc81bSMarkus Armbruster GuestFsfreezeStatus qmp_guest_fsfreeze_status(Error **errp) 1171c216e5adSMichael Roth { 1172f22d85e9SMichael Roth if (ga_is_frozen(ga_state)) { 1173f22d85e9SMichael Roth return GUEST_FSFREEZE_STATUS_FROZEN; 1174f22d85e9SMichael Roth } 1175f22d85e9SMichael Roth 1176f22d85e9SMichael Roth return GUEST_FSFREEZE_STATUS_THAWED; 1177c216e5adSMichael Roth } 1178c216e5adSMichael Roth 1179e99bce20STomoki Sekiyama int64_t qmp_guest_fsfreeze_freeze(Error **errp) 1180e99bce20STomoki Sekiyama { 1181e99bce20STomoki Sekiyama return qmp_guest_fsfreeze_freeze_list(false, NULL, errp); 1182e99bce20STomoki Sekiyama } 1183e99bce20STomoki Sekiyama 1184c216e5adSMichael Roth /* 1185c216e5adSMichael Roth * Walk list of mounted file systems in the guest, and freeze the ones which 1186c216e5adSMichael Roth * are real local file systems. 1187c216e5adSMichael Roth */ 1188e99bce20STomoki Sekiyama int64_t qmp_guest_fsfreeze_freeze_list(bool has_mountpoints, 1189e99bce20STomoki Sekiyama strList *mountpoints, 1190e99bce20STomoki Sekiyama Error **errp) 1191c216e5adSMichael Roth { 1192c216e5adSMichael Roth int ret = 0, i = 0; 1193e99bce20STomoki Sekiyama strList *list; 1194af02203fSPaolo Bonzini FsMountList mounts; 1195af02203fSPaolo Bonzini struct FsMount *mount; 1196261551d1SLuiz Capitulino Error *local_err = NULL; 1197c216e5adSMichael Roth int fd; 1198c216e5adSMichael Roth 1199c216e5adSMichael Roth slog("guest-fsfreeze called"); 1200c216e5adSMichael Roth 1201ec0f694cSTomoki Sekiyama execute_fsfreeze_hook(FSFREEZE_HOOK_FREEZE, &local_err); 120284d18f06SMarkus Armbruster if (local_err) { 120377dbc81bSMarkus Armbruster error_propagate(errp, local_err); 1204ec0f694cSTomoki Sekiyama return -1; 1205ec0f694cSTomoki Sekiyama } 1206ec0f694cSTomoki Sekiyama 12079e8aded4SMichael Roth QTAILQ_INIT(&mounts); 1208261551d1SLuiz Capitulino build_fs_mount_list(&mounts, &local_err); 120984d18f06SMarkus Armbruster if (local_err) { 121077dbc81bSMarkus Armbruster error_propagate(errp, local_err); 1211261551d1SLuiz Capitulino return -1; 1212c216e5adSMichael Roth } 1213c216e5adSMichael Roth 1214c216e5adSMichael Roth /* cannot risk guest agent blocking itself on a write in this state */ 1215f22d85e9SMichael Roth ga_set_frozen(ga_state); 1216c216e5adSMichael Roth 1217e5d9adbdSTomoki Sekiyama QTAILQ_FOREACH_REVERSE(mount, &mounts, FsMountList, next) { 1218e99bce20STomoki Sekiyama /* To issue fsfreeze in the reverse order of mounts, check if the 1219e99bce20STomoki Sekiyama * mount is listed in the list here */ 1220e99bce20STomoki Sekiyama if (has_mountpoints) { 1221e99bce20STomoki Sekiyama for (list = mountpoints; list; list = list->next) { 1222e99bce20STomoki Sekiyama if (strcmp(list->value, mount->dirname) == 0) { 1223e99bce20STomoki Sekiyama break; 1224e99bce20STomoki Sekiyama } 1225e99bce20STomoki Sekiyama } 1226e99bce20STomoki Sekiyama if (!list) { 1227e99bce20STomoki Sekiyama continue; 1228e99bce20STomoki Sekiyama } 1229e99bce20STomoki Sekiyama } 1230e99bce20STomoki Sekiyama 1231c216e5adSMichael Roth fd = qemu_open(mount->dirname, O_RDONLY); 1232c216e5adSMichael Roth if (fd == -1) { 123377dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to open %s", mount->dirname); 1234c216e5adSMichael Roth goto error; 1235c216e5adSMichael Roth } 1236c216e5adSMichael Roth 1237c216e5adSMichael Roth /* we try to cull filesytems we know won't work in advance, but other 1238c216e5adSMichael Roth * filesytems may not implement fsfreeze for less obvious reasons. 12399e8aded4SMichael Roth * these will report EOPNOTSUPP. we simply ignore these when tallying 12409e8aded4SMichael Roth * the number of frozen filesystems. 12419e8aded4SMichael Roth * 12429e8aded4SMichael Roth * any other error means a failure to freeze a filesystem we 12439e8aded4SMichael Roth * expect to be freezable, so return an error in those cases 12449e8aded4SMichael Roth * and return system to thawed state. 1245c216e5adSMichael Roth */ 1246c216e5adSMichael Roth ret = ioctl(fd, FIFREEZE); 12479e8aded4SMichael Roth if (ret == -1) { 12489e8aded4SMichael Roth if (errno != EOPNOTSUPP) { 124977dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to freeze %s", 1250617fbbc1SLuiz Capitulino mount->dirname); 1251c216e5adSMichael Roth close(fd); 1252c216e5adSMichael Roth goto error; 1253c216e5adSMichael Roth } 12549e8aded4SMichael Roth } else { 1255c216e5adSMichael Roth i++; 1256c216e5adSMichael Roth } 12579e8aded4SMichael Roth close(fd); 12589e8aded4SMichael Roth } 1259c216e5adSMichael Roth 1260af02203fSPaolo Bonzini free_fs_mount_list(&mounts); 1261c216e5adSMichael Roth return i; 1262c216e5adSMichael Roth 1263c216e5adSMichael Roth error: 1264af02203fSPaolo Bonzini free_fs_mount_list(&mounts); 1265c216e5adSMichael Roth qmp_guest_fsfreeze_thaw(NULL); 1266c216e5adSMichael Roth return 0; 1267c216e5adSMichael Roth } 1268c216e5adSMichael Roth 1269c216e5adSMichael Roth /* 1270c216e5adSMichael Roth * Walk list of frozen file systems in the guest, and thaw them. 1271c216e5adSMichael Roth */ 127277dbc81bSMarkus Armbruster int64_t qmp_guest_fsfreeze_thaw(Error **errp) 1273c216e5adSMichael Roth { 1274c216e5adSMichael Roth int ret; 1275af02203fSPaolo Bonzini FsMountList mounts; 1276af02203fSPaolo Bonzini FsMount *mount; 12779e8aded4SMichael Roth int fd, i = 0, logged; 1278261551d1SLuiz Capitulino Error *local_err = NULL; 1279c216e5adSMichael Roth 12809e8aded4SMichael Roth QTAILQ_INIT(&mounts); 1281261551d1SLuiz Capitulino build_fs_mount_list(&mounts, &local_err); 128284d18f06SMarkus Armbruster if (local_err) { 128377dbc81bSMarkus Armbruster error_propagate(errp, local_err); 12849e8aded4SMichael Roth return 0; 12859e8aded4SMichael Roth } 12869e8aded4SMichael Roth 12879e8aded4SMichael Roth QTAILQ_FOREACH(mount, &mounts, next) { 12889e8aded4SMichael Roth logged = false; 1289c216e5adSMichael Roth fd = qemu_open(mount->dirname, O_RDONLY); 1290c216e5adSMichael Roth if (fd == -1) { 1291c216e5adSMichael Roth continue; 1292c216e5adSMichael Roth } 12939e8aded4SMichael Roth /* we have no way of knowing whether a filesystem was actually unfrozen 12949e8aded4SMichael Roth * as a result of a successful call to FITHAW, only that if an error 12959e8aded4SMichael Roth * was returned the filesystem was *not* unfrozen by that particular 12969e8aded4SMichael Roth * call. 12979e8aded4SMichael Roth * 1298a31f0531SJim Meyering * since multiple preceding FIFREEZEs require multiple calls to FITHAW 12999e8aded4SMichael Roth * to unfreeze, continuing issuing FITHAW until an error is returned, 13009e8aded4SMichael Roth * in which case either the filesystem is in an unfreezable state, or, 13019e8aded4SMichael Roth * more likely, it was thawed previously (and remains so afterward). 13029e8aded4SMichael Roth * 13039e8aded4SMichael Roth * also, since the most recent successful call is the one that did 13049e8aded4SMichael Roth * the actual unfreeze, we can use this to provide an accurate count 13059e8aded4SMichael Roth * of the number of filesystems unfrozen by guest-fsfreeze-thaw, which 13069e8aded4SMichael Roth * may * be useful for determining whether a filesystem was unfrozen 13079e8aded4SMichael Roth * during the freeze/thaw phase by a process other than qemu-ga. 13089e8aded4SMichael Roth */ 13099e8aded4SMichael Roth do { 1310c216e5adSMichael Roth ret = ioctl(fd, FITHAW); 13119e8aded4SMichael Roth if (ret == 0 && !logged) { 1312c216e5adSMichael Roth i++; 13139e8aded4SMichael Roth logged = true; 13149e8aded4SMichael Roth } 13159e8aded4SMichael Roth } while (ret == 0); 13169e8aded4SMichael Roth close(fd); 1317c216e5adSMichael Roth } 1318c216e5adSMichael Roth 1319f22d85e9SMichael Roth ga_unset_frozen(ga_state); 1320af02203fSPaolo Bonzini free_fs_mount_list(&mounts); 1321ec0f694cSTomoki Sekiyama 132277dbc81bSMarkus Armbruster execute_fsfreeze_hook(FSFREEZE_HOOK_THAW, errp); 1323ec0f694cSTomoki Sekiyama 1324c216e5adSMichael Roth return i; 1325c216e5adSMichael Roth } 1326c216e5adSMichael Roth 1327c216e5adSMichael Roth static void guest_fsfreeze_cleanup(void) 1328c216e5adSMichael Roth { 1329c216e5adSMichael Roth Error *err = NULL; 1330c216e5adSMichael Roth 1331f22d85e9SMichael Roth if (ga_is_frozen(ga_state) == GUEST_FSFREEZE_STATUS_FROZEN) { 13326f686749SMarkus Armbruster qmp_guest_fsfreeze_thaw(&err); 13336f686749SMarkus Armbruster if (err) { 13346f686749SMarkus Armbruster slog("failed to clean up frozen filesystems: %s", 13356f686749SMarkus Armbruster error_get_pretty(err)); 13366f686749SMarkus Armbruster error_free(err); 1337c216e5adSMichael Roth } 1338c216e5adSMichael Roth } 1339c216e5adSMichael Roth } 1340e72c3f2eSMichael Roth #endif /* CONFIG_FSFREEZE */ 1341c216e5adSMichael Roth 1342eab5fd59SPaolo Bonzini #if defined(CONFIG_FSTRIM) 1343eab5fd59SPaolo Bonzini /* 1344eab5fd59SPaolo Bonzini * Walk list of mounted file systems in the guest, and trim them. 1345eab5fd59SPaolo Bonzini */ 1346e82855d9SJustin Ossevoort GuestFilesystemTrimResponse * 1347e82855d9SJustin Ossevoort qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **errp) 1348eab5fd59SPaolo Bonzini { 1349e82855d9SJustin Ossevoort GuestFilesystemTrimResponse *response; 1350e82855d9SJustin Ossevoort GuestFilesystemTrimResultList *list; 1351e82855d9SJustin Ossevoort GuestFilesystemTrimResult *result; 1352eab5fd59SPaolo Bonzini int ret = 0; 1353eab5fd59SPaolo Bonzini FsMountList mounts; 1354eab5fd59SPaolo Bonzini struct FsMount *mount; 1355eab5fd59SPaolo Bonzini int fd; 1356261551d1SLuiz Capitulino Error *local_err = NULL; 135773a652a1SJustin Ossevoort struct fstrim_range r; 1358eab5fd59SPaolo Bonzini 1359eab5fd59SPaolo Bonzini slog("guest-fstrim called"); 1360eab5fd59SPaolo Bonzini 1361eab5fd59SPaolo Bonzini QTAILQ_INIT(&mounts); 1362261551d1SLuiz Capitulino build_fs_mount_list(&mounts, &local_err); 136384d18f06SMarkus Armbruster if (local_err) { 136477dbc81bSMarkus Armbruster error_propagate(errp, local_err); 1365e82855d9SJustin Ossevoort return NULL; 1366eab5fd59SPaolo Bonzini } 1367eab5fd59SPaolo Bonzini 1368e82855d9SJustin Ossevoort response = g_malloc0(sizeof(*response)); 1369e82855d9SJustin Ossevoort 1370eab5fd59SPaolo Bonzini QTAILQ_FOREACH(mount, &mounts, next) { 1371e82855d9SJustin Ossevoort result = g_malloc0(sizeof(*result)); 1372e82855d9SJustin Ossevoort result->path = g_strdup(mount->dirname); 1373e82855d9SJustin Ossevoort 1374e82855d9SJustin Ossevoort list = g_malloc0(sizeof(*list)); 1375e82855d9SJustin Ossevoort list->value = result; 1376e82855d9SJustin Ossevoort list->next = response->paths; 1377e82855d9SJustin Ossevoort response->paths = list; 1378e82855d9SJustin Ossevoort 1379eab5fd59SPaolo Bonzini fd = qemu_open(mount->dirname, O_RDONLY); 1380eab5fd59SPaolo Bonzini if (fd == -1) { 1381e82855d9SJustin Ossevoort result->error = g_strdup_printf("failed to open: %s", 1382e82855d9SJustin Ossevoort strerror(errno)); 1383e82855d9SJustin Ossevoort result->has_error = true; 1384e82855d9SJustin Ossevoort continue; 1385eab5fd59SPaolo Bonzini } 1386eab5fd59SPaolo Bonzini 1387eab5fd59SPaolo Bonzini /* We try to cull filesytems we know won't work in advance, but other 1388eab5fd59SPaolo Bonzini * filesytems may not implement fstrim for less obvious reasons. These 1389e82855d9SJustin Ossevoort * will report EOPNOTSUPP; while in some other cases ENOTTY will be 1390e82855d9SJustin Ossevoort * reported (e.g. CD-ROMs). 1391e82855d9SJustin Ossevoort * Any other error means an unexpected error. 1392eab5fd59SPaolo Bonzini */ 139373a652a1SJustin Ossevoort r.start = 0; 139473a652a1SJustin Ossevoort r.len = -1; 139573a652a1SJustin Ossevoort r.minlen = has_minimum ? minimum : 0; 1396eab5fd59SPaolo Bonzini ret = ioctl(fd, FITRIM, &r); 1397eab5fd59SPaolo Bonzini if (ret == -1) { 1398e82855d9SJustin Ossevoort result->has_error = true; 1399e82855d9SJustin Ossevoort if (errno == ENOTTY || errno == EOPNOTSUPP) { 1400e82855d9SJustin Ossevoort result->error = g_strdup("trim not supported"); 1401e82855d9SJustin Ossevoort } else { 1402e82855d9SJustin Ossevoort result->error = g_strdup_printf("failed to trim: %s", 1403e82855d9SJustin Ossevoort strerror(errno)); 1404e82855d9SJustin Ossevoort } 1405eab5fd59SPaolo Bonzini close(fd); 1406e82855d9SJustin Ossevoort continue; 1407eab5fd59SPaolo Bonzini } 1408e82855d9SJustin Ossevoort 1409e82855d9SJustin Ossevoort result->has_minimum = true; 1410e82855d9SJustin Ossevoort result->minimum = r.minlen; 1411e82855d9SJustin Ossevoort result->has_trimmed = true; 1412e82855d9SJustin Ossevoort result->trimmed = r.len; 1413eab5fd59SPaolo Bonzini close(fd); 1414eab5fd59SPaolo Bonzini } 1415eab5fd59SPaolo Bonzini 1416eab5fd59SPaolo Bonzini free_fs_mount_list(&mounts); 1417e82855d9SJustin Ossevoort return response; 1418eab5fd59SPaolo Bonzini } 1419eab5fd59SPaolo Bonzini #endif /* CONFIG_FSTRIM */ 1420eab5fd59SPaolo Bonzini 1421eab5fd59SPaolo Bonzini 142211d0f125SLuiz Capitulino #define LINUX_SYS_STATE_FILE "/sys/power/state" 142311d0f125SLuiz Capitulino #define SUSPEND_SUPPORTED 0 142411d0f125SLuiz Capitulino #define SUSPEND_NOT_SUPPORTED 1 142511d0f125SLuiz Capitulino 142611d0f125SLuiz Capitulino static void bios_supports_mode(const char *pmutils_bin, const char *pmutils_arg, 142777dbc81bSMarkus Armbruster const char *sysfile_str, Error **errp) 142811d0f125SLuiz Capitulino { 14296b26e837SLuiz Capitulino Error *local_err = NULL; 143011d0f125SLuiz Capitulino char *pmutils_path; 14316b26e837SLuiz Capitulino pid_t pid; 1432dc8764f0SLuiz Capitulino int status; 143311d0f125SLuiz Capitulino 143411d0f125SLuiz Capitulino pmutils_path = g_find_program_in_path(pmutils_bin); 143511d0f125SLuiz Capitulino 143611d0f125SLuiz Capitulino pid = fork(); 143711d0f125SLuiz Capitulino if (!pid) { 1438dc8764f0SLuiz Capitulino char buf[32]; /* hopefully big enough */ 1439dc8764f0SLuiz Capitulino ssize_t ret; 1440dc8764f0SLuiz Capitulino int fd; 144111d0f125SLuiz Capitulino 144211d0f125SLuiz Capitulino setsid(); 144311d0f125SLuiz Capitulino reopen_fd_to_null(0); 144411d0f125SLuiz Capitulino reopen_fd_to_null(1); 144511d0f125SLuiz Capitulino reopen_fd_to_null(2); 144611d0f125SLuiz Capitulino 144711d0f125SLuiz Capitulino if (pmutils_path) { 144811d0f125SLuiz Capitulino execle(pmutils_path, pmutils_bin, pmutils_arg, NULL, environ); 144911d0f125SLuiz Capitulino } 145011d0f125SLuiz Capitulino 145111d0f125SLuiz Capitulino /* 145211d0f125SLuiz Capitulino * If we get here either pm-utils is not installed or execle() has 145311d0f125SLuiz Capitulino * failed. Let's try the manual method if the caller wants it. 145411d0f125SLuiz Capitulino */ 145511d0f125SLuiz Capitulino 145611d0f125SLuiz Capitulino if (!sysfile_str) { 145711d0f125SLuiz Capitulino _exit(SUSPEND_NOT_SUPPORTED); 145811d0f125SLuiz Capitulino } 145911d0f125SLuiz Capitulino 146011d0f125SLuiz Capitulino fd = open(LINUX_SYS_STATE_FILE, O_RDONLY); 146111d0f125SLuiz Capitulino if (fd < 0) { 146211d0f125SLuiz Capitulino _exit(SUSPEND_NOT_SUPPORTED); 146311d0f125SLuiz Capitulino } 146411d0f125SLuiz Capitulino 146511d0f125SLuiz Capitulino ret = read(fd, buf, sizeof(buf)-1); 146611d0f125SLuiz Capitulino if (ret <= 0) { 146711d0f125SLuiz Capitulino _exit(SUSPEND_NOT_SUPPORTED); 146811d0f125SLuiz Capitulino } 146911d0f125SLuiz Capitulino buf[ret] = '\0'; 147011d0f125SLuiz Capitulino 147111d0f125SLuiz Capitulino if (strstr(buf, sysfile_str)) { 147211d0f125SLuiz Capitulino _exit(SUSPEND_SUPPORTED); 147311d0f125SLuiz Capitulino } 147411d0f125SLuiz Capitulino 147511d0f125SLuiz Capitulino _exit(SUSPEND_NOT_SUPPORTED); 14766b26e837SLuiz Capitulino } else if (pid < 0) { 147777dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to create child process"); 14786b26e837SLuiz Capitulino goto out; 147911d0f125SLuiz Capitulino } 148011d0f125SLuiz Capitulino 14816b26e837SLuiz Capitulino ga_wait_child(pid, &status, &local_err); 148284d18f06SMarkus Armbruster if (local_err) { 148377dbc81bSMarkus Armbruster error_propagate(errp, local_err); 14846b26e837SLuiz Capitulino goto out; 148511d0f125SLuiz Capitulino } 148611d0f125SLuiz Capitulino 14876b26e837SLuiz Capitulino if (!WIFEXITED(status)) { 148877dbc81bSMarkus Armbruster error_setg(errp, "child process has terminated abnormally"); 14896b26e837SLuiz Capitulino goto out; 14906b26e837SLuiz Capitulino } 14916b26e837SLuiz Capitulino 1492dc8764f0SLuiz Capitulino switch (WEXITSTATUS(status)) { 1493dc8764f0SLuiz Capitulino case SUSPEND_SUPPORTED: 14946b26e837SLuiz Capitulino goto out; 1495dc8764f0SLuiz Capitulino case SUSPEND_NOT_SUPPORTED: 149677dbc81bSMarkus Armbruster error_setg(errp, 14976b26e837SLuiz Capitulino "the requested suspend mode is not supported by the guest"); 14986b26e837SLuiz Capitulino goto out; 1499dc8764f0SLuiz Capitulino default: 150077dbc81bSMarkus Armbruster error_setg(errp, 15016b26e837SLuiz Capitulino "the helper program '%s' returned an unexpected exit status" 15026b26e837SLuiz Capitulino " code (%d)", pmutils_path, WEXITSTATUS(status)); 15036b26e837SLuiz Capitulino goto out; 1504dc8764f0SLuiz Capitulino } 150511d0f125SLuiz Capitulino 15066b26e837SLuiz Capitulino out: 15076b26e837SLuiz Capitulino g_free(pmutils_path); 150811d0f125SLuiz Capitulino } 150911d0f125SLuiz Capitulino 151011d0f125SLuiz Capitulino static void guest_suspend(const char *pmutils_bin, const char *sysfile_str, 151177dbc81bSMarkus Armbruster Error **errp) 151211d0f125SLuiz Capitulino { 15137b376087SLuiz Capitulino Error *local_err = NULL; 151411d0f125SLuiz Capitulino char *pmutils_path; 15157b376087SLuiz Capitulino pid_t pid; 1516dc8764f0SLuiz Capitulino int status; 151711d0f125SLuiz Capitulino 151811d0f125SLuiz Capitulino pmutils_path = g_find_program_in_path(pmutils_bin); 151911d0f125SLuiz Capitulino 152011d0f125SLuiz Capitulino pid = fork(); 152111d0f125SLuiz Capitulino if (pid == 0) { 152211d0f125SLuiz Capitulino /* child */ 152311d0f125SLuiz Capitulino int fd; 152411d0f125SLuiz Capitulino 152511d0f125SLuiz Capitulino setsid(); 152611d0f125SLuiz Capitulino reopen_fd_to_null(0); 152711d0f125SLuiz Capitulino reopen_fd_to_null(1); 152811d0f125SLuiz Capitulino reopen_fd_to_null(2); 152911d0f125SLuiz Capitulino 153011d0f125SLuiz Capitulino if (pmutils_path) { 153111d0f125SLuiz Capitulino execle(pmutils_path, pmutils_bin, NULL, environ); 153211d0f125SLuiz Capitulino } 153311d0f125SLuiz Capitulino 153411d0f125SLuiz Capitulino /* 153511d0f125SLuiz Capitulino * If we get here either pm-utils is not installed or execle() has 153611d0f125SLuiz Capitulino * failed. Let's try the manual method if the caller wants it. 153711d0f125SLuiz Capitulino */ 153811d0f125SLuiz Capitulino 153911d0f125SLuiz Capitulino if (!sysfile_str) { 154011d0f125SLuiz Capitulino _exit(EXIT_FAILURE); 154111d0f125SLuiz Capitulino } 154211d0f125SLuiz Capitulino 154311d0f125SLuiz Capitulino fd = open(LINUX_SYS_STATE_FILE, O_WRONLY); 154411d0f125SLuiz Capitulino if (fd < 0) { 154511d0f125SLuiz Capitulino _exit(EXIT_FAILURE); 154611d0f125SLuiz Capitulino } 154711d0f125SLuiz Capitulino 154811d0f125SLuiz Capitulino if (write(fd, sysfile_str, strlen(sysfile_str)) < 0) { 154911d0f125SLuiz Capitulino _exit(EXIT_FAILURE); 155011d0f125SLuiz Capitulino } 155111d0f125SLuiz Capitulino 155211d0f125SLuiz Capitulino _exit(EXIT_SUCCESS); 15537b376087SLuiz Capitulino } else if (pid < 0) { 155477dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to create child process"); 15557b376087SLuiz Capitulino goto out; 155611d0f125SLuiz Capitulino } 155711d0f125SLuiz Capitulino 15587b376087SLuiz Capitulino ga_wait_child(pid, &status, &local_err); 155984d18f06SMarkus Armbruster if (local_err) { 156077dbc81bSMarkus Armbruster error_propagate(errp, local_err); 15617b376087SLuiz Capitulino goto out; 15627b376087SLuiz Capitulino } 15637b376087SLuiz Capitulino 15647b376087SLuiz Capitulino if (!WIFEXITED(status)) { 156577dbc81bSMarkus Armbruster error_setg(errp, "child process has terminated abnormally"); 15667b376087SLuiz Capitulino goto out; 15677b376087SLuiz Capitulino } 15687b376087SLuiz Capitulino 15697b376087SLuiz Capitulino if (WEXITSTATUS(status)) { 157077dbc81bSMarkus Armbruster error_setg(errp, "child process has failed to suspend"); 15717b376087SLuiz Capitulino goto out; 15727b376087SLuiz Capitulino } 15737b376087SLuiz Capitulino 15747b376087SLuiz Capitulino out: 157511d0f125SLuiz Capitulino g_free(pmutils_path); 157611d0f125SLuiz Capitulino } 157711d0f125SLuiz Capitulino 157877dbc81bSMarkus Armbruster void qmp_guest_suspend_disk(Error **errp) 157911d0f125SLuiz Capitulino { 15800f230bf7SMarkus Armbruster Error *local_err = NULL; 15810f230bf7SMarkus Armbruster 15820f230bf7SMarkus Armbruster bios_supports_mode("pm-is-supported", "--hibernate", "disk", &local_err); 15830f230bf7SMarkus Armbruster if (local_err) { 15840f230bf7SMarkus Armbruster error_propagate(errp, local_err); 158511d0f125SLuiz Capitulino return; 158611d0f125SLuiz Capitulino } 158711d0f125SLuiz Capitulino 158877dbc81bSMarkus Armbruster guest_suspend("pm-hibernate", "disk", errp); 158911d0f125SLuiz Capitulino } 159011d0f125SLuiz Capitulino 159177dbc81bSMarkus Armbruster void qmp_guest_suspend_ram(Error **errp) 1592fbf42210SLuiz Capitulino { 15930f230bf7SMarkus Armbruster Error *local_err = NULL; 15940f230bf7SMarkus Armbruster 15950f230bf7SMarkus Armbruster bios_supports_mode("pm-is-supported", "--suspend", "mem", &local_err); 15960f230bf7SMarkus Armbruster if (local_err) { 15970f230bf7SMarkus Armbruster error_propagate(errp, local_err); 1598fbf42210SLuiz Capitulino return; 1599fbf42210SLuiz Capitulino } 1600fbf42210SLuiz Capitulino 160177dbc81bSMarkus Armbruster guest_suspend("pm-suspend", "mem", errp); 1602fbf42210SLuiz Capitulino } 1603fbf42210SLuiz Capitulino 160477dbc81bSMarkus Armbruster void qmp_guest_suspend_hybrid(Error **errp) 160595f4f404SLuiz Capitulino { 16060f230bf7SMarkus Armbruster Error *local_err = NULL; 16070f230bf7SMarkus Armbruster 16080f230bf7SMarkus Armbruster bios_supports_mode("pm-is-supported", "--suspend-hybrid", NULL, 16090f230bf7SMarkus Armbruster &local_err); 16100f230bf7SMarkus Armbruster if (local_err) { 16110f230bf7SMarkus Armbruster error_propagate(errp, local_err); 161295f4f404SLuiz Capitulino return; 161395f4f404SLuiz Capitulino } 161495f4f404SLuiz Capitulino 161577dbc81bSMarkus Armbruster guest_suspend("pm-suspend-hybrid", NULL, errp); 161695f4f404SLuiz Capitulino } 161795f4f404SLuiz Capitulino 16183424fc9fSMichal Privoznik static GuestNetworkInterfaceList * 16193424fc9fSMichal Privoznik guest_find_interface(GuestNetworkInterfaceList *head, 16203424fc9fSMichal Privoznik const char *name) 16213424fc9fSMichal Privoznik { 16223424fc9fSMichal Privoznik for (; head; head = head->next) { 16233424fc9fSMichal Privoznik if (strcmp(head->value->name, name) == 0) { 16243424fc9fSMichal Privoznik break; 16253424fc9fSMichal Privoznik } 16263424fc9fSMichal Privoznik } 16273424fc9fSMichal Privoznik 16283424fc9fSMichal Privoznik return head; 16293424fc9fSMichal Privoznik } 16303424fc9fSMichal Privoznik 16313424fc9fSMichal Privoznik /* 16323424fc9fSMichal Privoznik * Build information about guest interfaces 16333424fc9fSMichal Privoznik */ 16343424fc9fSMichal Privoznik GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp) 16353424fc9fSMichal Privoznik { 16363424fc9fSMichal Privoznik GuestNetworkInterfaceList *head = NULL, *cur_item = NULL; 16373424fc9fSMichal Privoznik struct ifaddrs *ifap, *ifa; 16383424fc9fSMichal Privoznik 16393424fc9fSMichal Privoznik if (getifaddrs(&ifap) < 0) { 1640878a0ae0SLuiz Capitulino error_setg_errno(errp, errno, "getifaddrs failed"); 16413424fc9fSMichal Privoznik goto error; 16423424fc9fSMichal Privoznik } 16433424fc9fSMichal Privoznik 16443424fc9fSMichal Privoznik for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 16453424fc9fSMichal Privoznik GuestNetworkInterfaceList *info; 16463424fc9fSMichal Privoznik GuestIpAddressList **address_list = NULL, *address_item = NULL; 16473424fc9fSMichal Privoznik char addr4[INET_ADDRSTRLEN]; 16483424fc9fSMichal Privoznik char addr6[INET6_ADDRSTRLEN]; 16493424fc9fSMichal Privoznik int sock; 16503424fc9fSMichal Privoznik struct ifreq ifr; 16513424fc9fSMichal Privoznik unsigned char *mac_addr; 16523424fc9fSMichal Privoznik void *p; 16533424fc9fSMichal Privoznik 16543424fc9fSMichal Privoznik g_debug("Processing %s interface", ifa->ifa_name); 16553424fc9fSMichal Privoznik 16563424fc9fSMichal Privoznik info = guest_find_interface(head, ifa->ifa_name); 16573424fc9fSMichal Privoznik 16583424fc9fSMichal Privoznik if (!info) { 16593424fc9fSMichal Privoznik info = g_malloc0(sizeof(*info)); 16603424fc9fSMichal Privoznik info->value = g_malloc0(sizeof(*info->value)); 16613424fc9fSMichal Privoznik info->value->name = g_strdup(ifa->ifa_name); 16623424fc9fSMichal Privoznik 16633424fc9fSMichal Privoznik if (!cur_item) { 16643424fc9fSMichal Privoznik head = cur_item = info; 16653424fc9fSMichal Privoznik } else { 16663424fc9fSMichal Privoznik cur_item->next = info; 16673424fc9fSMichal Privoznik cur_item = info; 16683424fc9fSMichal Privoznik } 16693424fc9fSMichal Privoznik } 16703424fc9fSMichal Privoznik 16713424fc9fSMichal Privoznik if (!info->value->has_hardware_address && 16723424fc9fSMichal Privoznik ifa->ifa_flags & SIOCGIFHWADDR) { 16733424fc9fSMichal Privoznik /* we haven't obtained HW address yet */ 16743424fc9fSMichal Privoznik sock = socket(PF_INET, SOCK_STREAM, 0); 16753424fc9fSMichal Privoznik if (sock == -1) { 1676878a0ae0SLuiz Capitulino error_setg_errno(errp, errno, "failed to create socket"); 16773424fc9fSMichal Privoznik goto error; 16783424fc9fSMichal Privoznik } 16793424fc9fSMichal Privoznik 16803424fc9fSMichal Privoznik memset(&ifr, 0, sizeof(ifr)); 16811ab516edSJim Meyering pstrcpy(ifr.ifr_name, IF_NAMESIZE, info->value->name); 16823424fc9fSMichal Privoznik if (ioctl(sock, SIOCGIFHWADDR, &ifr) == -1) { 1683878a0ae0SLuiz Capitulino error_setg_errno(errp, errno, 1684878a0ae0SLuiz Capitulino "failed to get MAC address of %s", 1685878a0ae0SLuiz Capitulino ifa->ifa_name); 168610a2158fSMarkus Armbruster close(sock); 16873424fc9fSMichal Privoznik goto error; 16883424fc9fSMichal Privoznik } 16893424fc9fSMichal Privoznik 169010a2158fSMarkus Armbruster close(sock); 16913424fc9fSMichal Privoznik mac_addr = (unsigned char *) &ifr.ifr_hwaddr.sa_data; 16923424fc9fSMichal Privoznik 1693e4ada482SStefan Weil info->value->hardware_address = 1694e4ada482SStefan Weil g_strdup_printf("%02x:%02x:%02x:%02x:%02x:%02x", 16953424fc9fSMichal Privoznik (int) mac_addr[0], (int) mac_addr[1], 16963424fc9fSMichal Privoznik (int) mac_addr[2], (int) mac_addr[3], 1697e4ada482SStefan Weil (int) mac_addr[4], (int) mac_addr[5]); 16983424fc9fSMichal Privoznik 16993424fc9fSMichal Privoznik info->value->has_hardware_address = true; 17003424fc9fSMichal Privoznik } 17013424fc9fSMichal Privoznik 17023424fc9fSMichal Privoznik if (ifa->ifa_addr && 17033424fc9fSMichal Privoznik ifa->ifa_addr->sa_family == AF_INET) { 17043424fc9fSMichal Privoznik /* interface with IPv4 address */ 17053424fc9fSMichal Privoznik p = &((struct sockaddr_in *)ifa->ifa_addr)->sin_addr; 17063424fc9fSMichal Privoznik if (!inet_ntop(AF_INET, p, addr4, sizeof(addr4))) { 1707878a0ae0SLuiz Capitulino error_setg_errno(errp, errno, "inet_ntop failed"); 17083424fc9fSMichal Privoznik goto error; 17093424fc9fSMichal Privoznik } 17103424fc9fSMichal Privoznik 171110a2158fSMarkus Armbruster address_item = g_malloc0(sizeof(*address_item)); 171210a2158fSMarkus Armbruster address_item->value = g_malloc0(sizeof(*address_item->value)); 17133424fc9fSMichal Privoznik address_item->value->ip_address = g_strdup(addr4); 17143424fc9fSMichal Privoznik address_item->value->ip_address_type = GUEST_IP_ADDRESS_TYPE_IPV4; 17153424fc9fSMichal Privoznik 17163424fc9fSMichal Privoznik if (ifa->ifa_netmask) { 17173424fc9fSMichal Privoznik /* Count the number of set bits in netmask. 17183424fc9fSMichal Privoznik * This is safe as '1' and '0' cannot be shuffled in netmask. */ 17193424fc9fSMichal Privoznik p = &((struct sockaddr_in *)ifa->ifa_netmask)->sin_addr; 17203424fc9fSMichal Privoznik address_item->value->prefix = ctpop32(((uint32_t *) p)[0]); 17213424fc9fSMichal Privoznik } 17223424fc9fSMichal Privoznik } else if (ifa->ifa_addr && 17233424fc9fSMichal Privoznik ifa->ifa_addr->sa_family == AF_INET6) { 17243424fc9fSMichal Privoznik /* interface with IPv6 address */ 17253424fc9fSMichal Privoznik p = &((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_addr; 17263424fc9fSMichal Privoznik if (!inet_ntop(AF_INET6, p, addr6, sizeof(addr6))) { 1727878a0ae0SLuiz Capitulino error_setg_errno(errp, errno, "inet_ntop failed"); 17283424fc9fSMichal Privoznik goto error; 17293424fc9fSMichal Privoznik } 17303424fc9fSMichal Privoznik 173110a2158fSMarkus Armbruster address_item = g_malloc0(sizeof(*address_item)); 173210a2158fSMarkus Armbruster address_item->value = g_malloc0(sizeof(*address_item->value)); 17333424fc9fSMichal Privoznik address_item->value->ip_address = g_strdup(addr6); 17343424fc9fSMichal Privoznik address_item->value->ip_address_type = GUEST_IP_ADDRESS_TYPE_IPV6; 17353424fc9fSMichal Privoznik 17363424fc9fSMichal Privoznik if (ifa->ifa_netmask) { 17373424fc9fSMichal Privoznik /* Count the number of set bits in netmask. 17383424fc9fSMichal Privoznik * This is safe as '1' and '0' cannot be shuffled in netmask. */ 17393424fc9fSMichal Privoznik p = &((struct sockaddr_in6 *)ifa->ifa_netmask)->sin6_addr; 17403424fc9fSMichal Privoznik address_item->value->prefix = 17413424fc9fSMichal Privoznik ctpop32(((uint32_t *) p)[0]) + 17423424fc9fSMichal Privoznik ctpop32(((uint32_t *) p)[1]) + 17433424fc9fSMichal Privoznik ctpop32(((uint32_t *) p)[2]) + 17443424fc9fSMichal Privoznik ctpop32(((uint32_t *) p)[3]); 17453424fc9fSMichal Privoznik } 17463424fc9fSMichal Privoznik } 17473424fc9fSMichal Privoznik 17483424fc9fSMichal Privoznik if (!address_item) { 17493424fc9fSMichal Privoznik continue; 17503424fc9fSMichal Privoznik } 17513424fc9fSMichal Privoznik 17523424fc9fSMichal Privoznik address_list = &info->value->ip_addresses; 17533424fc9fSMichal Privoznik 17543424fc9fSMichal Privoznik while (*address_list && (*address_list)->next) { 17553424fc9fSMichal Privoznik address_list = &(*address_list)->next; 17563424fc9fSMichal Privoznik } 17573424fc9fSMichal Privoznik 17583424fc9fSMichal Privoznik if (!*address_list) { 17593424fc9fSMichal Privoznik *address_list = address_item; 17603424fc9fSMichal Privoznik } else { 17613424fc9fSMichal Privoznik (*address_list)->next = address_item; 17623424fc9fSMichal Privoznik } 17633424fc9fSMichal Privoznik 17643424fc9fSMichal Privoznik info->value->has_ip_addresses = true; 17653424fc9fSMichal Privoznik 17663424fc9fSMichal Privoznik 17673424fc9fSMichal Privoznik } 17683424fc9fSMichal Privoznik 17693424fc9fSMichal Privoznik freeifaddrs(ifap); 17703424fc9fSMichal Privoznik return head; 17713424fc9fSMichal Privoznik 17723424fc9fSMichal Privoznik error: 17733424fc9fSMichal Privoznik freeifaddrs(ifap); 17743424fc9fSMichal Privoznik qapi_free_GuestNetworkInterfaceList(head); 17753424fc9fSMichal Privoznik return NULL; 17763424fc9fSMichal Privoznik } 17773424fc9fSMichal Privoznik 177877dbc81bSMarkus Armbruster #define SYSCONF_EXACT(name, errp) sysconf_exact((name), #name, (errp)) 1779d2baff62SLaszlo Ersek 178077dbc81bSMarkus Armbruster static long sysconf_exact(int name, const char *name_str, Error **errp) 1781d2baff62SLaszlo Ersek { 1782d2baff62SLaszlo Ersek long ret; 1783d2baff62SLaszlo Ersek 1784d2baff62SLaszlo Ersek errno = 0; 1785d2baff62SLaszlo Ersek ret = sysconf(name); 1786d2baff62SLaszlo Ersek if (ret == -1) { 1787d2baff62SLaszlo Ersek if (errno == 0) { 178877dbc81bSMarkus Armbruster error_setg(errp, "sysconf(%s): value indefinite", name_str); 1789d2baff62SLaszlo Ersek } else { 179077dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "sysconf(%s)", name_str); 1791d2baff62SLaszlo Ersek } 1792d2baff62SLaszlo Ersek } 1793d2baff62SLaszlo Ersek return ret; 1794d2baff62SLaszlo Ersek } 1795d2baff62SLaszlo Ersek 1796d2baff62SLaszlo Ersek /* Transfer online/offline status between @vcpu and the guest system. 1797d2baff62SLaszlo Ersek * 1798d2baff62SLaszlo Ersek * On input either @errp or *@errp must be NULL. 1799d2baff62SLaszlo Ersek * 1800d2baff62SLaszlo Ersek * In system-to-@vcpu direction, the following @vcpu fields are accessed: 1801d2baff62SLaszlo Ersek * - R: vcpu->logical_id 1802d2baff62SLaszlo Ersek * - W: vcpu->online 1803d2baff62SLaszlo Ersek * - W: vcpu->can_offline 1804d2baff62SLaszlo Ersek * 1805d2baff62SLaszlo Ersek * In @vcpu-to-system direction, the following @vcpu fields are accessed: 1806d2baff62SLaszlo Ersek * - R: vcpu->logical_id 1807d2baff62SLaszlo Ersek * - R: vcpu->online 1808d2baff62SLaszlo Ersek * 1809d2baff62SLaszlo Ersek * Written members remain unmodified on error. 1810d2baff62SLaszlo Ersek */ 1811d2baff62SLaszlo Ersek static void transfer_vcpu(GuestLogicalProcessor *vcpu, bool sys2vcpu, 1812d2baff62SLaszlo Ersek Error **errp) 1813d2baff62SLaszlo Ersek { 1814d2baff62SLaszlo Ersek char *dirpath; 1815d2baff62SLaszlo Ersek int dirfd; 1816d2baff62SLaszlo Ersek 1817d2baff62SLaszlo Ersek dirpath = g_strdup_printf("/sys/devices/system/cpu/cpu%" PRId64 "/", 1818d2baff62SLaszlo Ersek vcpu->logical_id); 1819d2baff62SLaszlo Ersek dirfd = open(dirpath, O_RDONLY | O_DIRECTORY); 1820d2baff62SLaszlo Ersek if (dirfd == -1) { 1821d2baff62SLaszlo Ersek error_setg_errno(errp, errno, "open(\"%s\")", dirpath); 1822d2baff62SLaszlo Ersek } else { 1823d2baff62SLaszlo Ersek static const char fn[] = "online"; 1824d2baff62SLaszlo Ersek int fd; 1825d2baff62SLaszlo Ersek int res; 1826d2baff62SLaszlo Ersek 1827d2baff62SLaszlo Ersek fd = openat(dirfd, fn, sys2vcpu ? O_RDONLY : O_RDWR); 1828d2baff62SLaszlo Ersek if (fd == -1) { 1829d2baff62SLaszlo Ersek if (errno != ENOENT) { 1830d2baff62SLaszlo Ersek error_setg_errno(errp, errno, "open(\"%s/%s\")", dirpath, fn); 1831d2baff62SLaszlo Ersek } else if (sys2vcpu) { 1832d2baff62SLaszlo Ersek vcpu->online = true; 1833d2baff62SLaszlo Ersek vcpu->can_offline = false; 1834d2baff62SLaszlo Ersek } else if (!vcpu->online) { 1835d2baff62SLaszlo Ersek error_setg(errp, "logical processor #%" PRId64 " can't be " 1836d2baff62SLaszlo Ersek "offlined", vcpu->logical_id); 1837d2baff62SLaszlo Ersek } /* otherwise pretend successful re-onlining */ 1838d2baff62SLaszlo Ersek } else { 1839d2baff62SLaszlo Ersek unsigned char status; 1840d2baff62SLaszlo Ersek 1841d2baff62SLaszlo Ersek res = pread(fd, &status, 1, 0); 1842d2baff62SLaszlo Ersek if (res == -1) { 1843d2baff62SLaszlo Ersek error_setg_errno(errp, errno, "pread(\"%s/%s\")", dirpath, fn); 1844d2baff62SLaszlo Ersek } else if (res == 0) { 1845d2baff62SLaszlo Ersek error_setg(errp, "pread(\"%s/%s\"): unexpected EOF", dirpath, 1846d2baff62SLaszlo Ersek fn); 1847d2baff62SLaszlo Ersek } else if (sys2vcpu) { 1848d2baff62SLaszlo Ersek vcpu->online = (status != '0'); 1849d2baff62SLaszlo Ersek vcpu->can_offline = true; 1850d2baff62SLaszlo Ersek } else if (vcpu->online != (status != '0')) { 1851d2baff62SLaszlo Ersek status = '0' + vcpu->online; 1852d2baff62SLaszlo Ersek if (pwrite(fd, &status, 1, 0) == -1) { 1853d2baff62SLaszlo Ersek error_setg_errno(errp, errno, "pwrite(\"%s/%s\")", dirpath, 1854d2baff62SLaszlo Ersek fn); 1855d2baff62SLaszlo Ersek } 1856d2baff62SLaszlo Ersek } /* otherwise pretend successful re-(on|off)-lining */ 1857d2baff62SLaszlo Ersek 1858d2baff62SLaszlo Ersek res = close(fd); 1859d2baff62SLaszlo Ersek g_assert(res == 0); 1860d2baff62SLaszlo Ersek } 1861d2baff62SLaszlo Ersek 1862d2baff62SLaszlo Ersek res = close(dirfd); 1863d2baff62SLaszlo Ersek g_assert(res == 0); 1864d2baff62SLaszlo Ersek } 1865d2baff62SLaszlo Ersek 1866d2baff62SLaszlo Ersek g_free(dirpath); 1867d2baff62SLaszlo Ersek } 1868d2baff62SLaszlo Ersek 1869d2baff62SLaszlo Ersek GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp) 1870d2baff62SLaszlo Ersek { 1871d2baff62SLaszlo Ersek int64_t current; 1872d2baff62SLaszlo Ersek GuestLogicalProcessorList *head, **link; 1873d2baff62SLaszlo Ersek long sc_max; 1874d2baff62SLaszlo Ersek Error *local_err = NULL; 1875d2baff62SLaszlo Ersek 1876d2baff62SLaszlo Ersek current = 0; 1877d2baff62SLaszlo Ersek head = NULL; 1878d2baff62SLaszlo Ersek link = &head; 1879d2baff62SLaszlo Ersek sc_max = SYSCONF_EXACT(_SC_NPROCESSORS_CONF, &local_err); 1880d2baff62SLaszlo Ersek 1881d2baff62SLaszlo Ersek while (local_err == NULL && current < sc_max) { 1882d2baff62SLaszlo Ersek GuestLogicalProcessor *vcpu; 1883d2baff62SLaszlo Ersek GuestLogicalProcessorList *entry; 1884d2baff62SLaszlo Ersek 1885d2baff62SLaszlo Ersek vcpu = g_malloc0(sizeof *vcpu); 1886d2baff62SLaszlo Ersek vcpu->logical_id = current++; 1887d2baff62SLaszlo Ersek vcpu->has_can_offline = true; /* lolspeak ftw */ 1888d2baff62SLaszlo Ersek transfer_vcpu(vcpu, true, &local_err); 1889d2baff62SLaszlo Ersek 1890d2baff62SLaszlo Ersek entry = g_malloc0(sizeof *entry); 1891d2baff62SLaszlo Ersek entry->value = vcpu; 1892d2baff62SLaszlo Ersek 1893d2baff62SLaszlo Ersek *link = entry; 1894d2baff62SLaszlo Ersek link = &entry->next; 1895d2baff62SLaszlo Ersek } 1896d2baff62SLaszlo Ersek 1897d2baff62SLaszlo Ersek if (local_err == NULL) { 1898d2baff62SLaszlo Ersek /* there's no guest with zero VCPUs */ 1899d2baff62SLaszlo Ersek g_assert(head != NULL); 1900d2baff62SLaszlo Ersek return head; 1901d2baff62SLaszlo Ersek } 1902d2baff62SLaszlo Ersek 1903d2baff62SLaszlo Ersek qapi_free_GuestLogicalProcessorList(head); 1904d2baff62SLaszlo Ersek error_propagate(errp, local_err); 1905d2baff62SLaszlo Ersek return NULL; 1906d2baff62SLaszlo Ersek } 1907d2baff62SLaszlo Ersek 1908cbb65fc2SLaszlo Ersek int64_t qmp_guest_set_vcpus(GuestLogicalProcessorList *vcpus, Error **errp) 1909cbb65fc2SLaszlo Ersek { 1910cbb65fc2SLaszlo Ersek int64_t processed; 1911cbb65fc2SLaszlo Ersek Error *local_err = NULL; 1912cbb65fc2SLaszlo Ersek 1913cbb65fc2SLaszlo Ersek processed = 0; 1914cbb65fc2SLaszlo Ersek while (vcpus != NULL) { 1915cbb65fc2SLaszlo Ersek transfer_vcpu(vcpus->value, false, &local_err); 1916cbb65fc2SLaszlo Ersek if (local_err != NULL) { 1917cbb65fc2SLaszlo Ersek break; 1918cbb65fc2SLaszlo Ersek } 1919cbb65fc2SLaszlo Ersek ++processed; 1920cbb65fc2SLaszlo Ersek vcpus = vcpus->next; 1921cbb65fc2SLaszlo Ersek } 1922cbb65fc2SLaszlo Ersek 1923cbb65fc2SLaszlo Ersek if (local_err != NULL) { 1924cbb65fc2SLaszlo Ersek if (processed == 0) { 1925cbb65fc2SLaszlo Ersek error_propagate(errp, local_err); 1926cbb65fc2SLaszlo Ersek } else { 1927cbb65fc2SLaszlo Ersek error_free(local_err); 1928cbb65fc2SLaszlo Ersek } 1929cbb65fc2SLaszlo Ersek } 1930cbb65fc2SLaszlo Ersek 1931cbb65fc2SLaszlo Ersek return processed; 1932cbb65fc2SLaszlo Ersek } 1933cbb65fc2SLaszlo Ersek 1934215a2771SDaniel P. Berrange void qmp_guest_set_user_password(const char *username, 1935215a2771SDaniel P. Berrange const char *password, 1936215a2771SDaniel P. Berrange bool crypted, 1937215a2771SDaniel P. Berrange Error **errp) 1938215a2771SDaniel P. Berrange { 1939215a2771SDaniel P. Berrange Error *local_err = NULL; 1940215a2771SDaniel P. Berrange char *passwd_path = NULL; 1941215a2771SDaniel P. Berrange pid_t pid; 1942215a2771SDaniel P. Berrange int status; 1943215a2771SDaniel P. Berrange int datafd[2] = { -1, -1 }; 1944215a2771SDaniel P. Berrange char *rawpasswddata = NULL; 1945215a2771SDaniel P. Berrange size_t rawpasswdlen; 1946215a2771SDaniel P. Berrange char *chpasswddata = NULL; 1947215a2771SDaniel P. Berrange size_t chpasswdlen; 1948215a2771SDaniel P. Berrange 1949215a2771SDaniel P. Berrange rawpasswddata = (char *)g_base64_decode(password, &rawpasswdlen); 1950215a2771SDaniel P. Berrange rawpasswddata = g_renew(char, rawpasswddata, rawpasswdlen + 1); 1951215a2771SDaniel P. Berrange rawpasswddata[rawpasswdlen] = '\0'; 1952215a2771SDaniel P. Berrange 1953215a2771SDaniel P. Berrange if (strchr(rawpasswddata, '\n')) { 1954215a2771SDaniel P. Berrange error_setg(errp, "forbidden characters in raw password"); 1955215a2771SDaniel P. Berrange goto out; 1956215a2771SDaniel P. Berrange } 1957215a2771SDaniel P. Berrange 1958215a2771SDaniel P. Berrange if (strchr(username, '\n') || 1959215a2771SDaniel P. Berrange strchr(username, ':')) { 1960215a2771SDaniel P. Berrange error_setg(errp, "forbidden characters in username"); 1961215a2771SDaniel P. Berrange goto out; 1962215a2771SDaniel P. Berrange } 1963215a2771SDaniel P. Berrange 1964215a2771SDaniel P. Berrange chpasswddata = g_strdup_printf("%s:%s\n", username, rawpasswddata); 1965215a2771SDaniel P. Berrange chpasswdlen = strlen(chpasswddata); 1966215a2771SDaniel P. Berrange 1967215a2771SDaniel P. Berrange passwd_path = g_find_program_in_path("chpasswd"); 1968215a2771SDaniel P. Berrange 1969215a2771SDaniel P. Berrange if (!passwd_path) { 1970215a2771SDaniel P. Berrange error_setg(errp, "cannot find 'passwd' program in PATH"); 1971215a2771SDaniel P. Berrange goto out; 1972215a2771SDaniel P. Berrange } 1973215a2771SDaniel P. Berrange 1974215a2771SDaniel P. Berrange if (pipe(datafd) < 0) { 1975215a2771SDaniel P. Berrange error_setg(errp, "cannot create pipe FDs"); 1976215a2771SDaniel P. Berrange goto out; 1977215a2771SDaniel P. Berrange } 1978215a2771SDaniel P. Berrange 1979215a2771SDaniel P. Berrange pid = fork(); 1980215a2771SDaniel P. Berrange if (pid == 0) { 1981215a2771SDaniel P. Berrange close(datafd[1]); 1982215a2771SDaniel P. Berrange /* child */ 1983215a2771SDaniel P. Berrange setsid(); 1984215a2771SDaniel P. Berrange dup2(datafd[0], 0); 1985215a2771SDaniel P. Berrange reopen_fd_to_null(1); 1986215a2771SDaniel P. Berrange reopen_fd_to_null(2); 1987215a2771SDaniel P. Berrange 1988215a2771SDaniel P. Berrange if (crypted) { 1989215a2771SDaniel P. Berrange execle(passwd_path, "chpasswd", "-e", NULL, environ); 1990215a2771SDaniel P. Berrange } else { 1991215a2771SDaniel P. Berrange execle(passwd_path, "chpasswd", NULL, environ); 1992215a2771SDaniel P. Berrange } 1993215a2771SDaniel P. Berrange _exit(EXIT_FAILURE); 1994215a2771SDaniel P. Berrange } else if (pid < 0) { 1995215a2771SDaniel P. Berrange error_setg_errno(errp, errno, "failed to create child process"); 1996215a2771SDaniel P. Berrange goto out; 1997215a2771SDaniel P. Berrange } 1998215a2771SDaniel P. Berrange close(datafd[0]); 1999215a2771SDaniel P. Berrange datafd[0] = -1; 2000215a2771SDaniel P. Berrange 2001215a2771SDaniel P. Berrange if (qemu_write_full(datafd[1], chpasswddata, chpasswdlen) != chpasswdlen) { 2002215a2771SDaniel P. Berrange error_setg_errno(errp, errno, "cannot write new account password"); 2003215a2771SDaniel P. Berrange goto out; 2004215a2771SDaniel P. Berrange } 2005215a2771SDaniel P. Berrange close(datafd[1]); 2006215a2771SDaniel P. Berrange datafd[1] = -1; 2007215a2771SDaniel P. Berrange 2008215a2771SDaniel P. Berrange ga_wait_child(pid, &status, &local_err); 2009215a2771SDaniel P. Berrange if (local_err) { 2010215a2771SDaniel P. Berrange error_propagate(errp, local_err); 2011215a2771SDaniel P. Berrange goto out; 2012215a2771SDaniel P. Berrange } 2013215a2771SDaniel P. Berrange 2014215a2771SDaniel P. Berrange if (!WIFEXITED(status)) { 2015215a2771SDaniel P. Berrange error_setg(errp, "child process has terminated abnormally"); 2016215a2771SDaniel P. Berrange goto out; 2017215a2771SDaniel P. Berrange } 2018215a2771SDaniel P. Berrange 2019215a2771SDaniel P. Berrange if (WEXITSTATUS(status)) { 2020215a2771SDaniel P. Berrange error_setg(errp, "child process has failed to set user password"); 2021215a2771SDaniel P. Berrange goto out; 2022215a2771SDaniel P. Berrange } 2023215a2771SDaniel P. Berrange 2024215a2771SDaniel P. Berrange out: 2025215a2771SDaniel P. Berrange g_free(chpasswddata); 2026215a2771SDaniel P. Berrange g_free(rawpasswddata); 2027215a2771SDaniel P. Berrange g_free(passwd_path); 2028215a2771SDaniel P. Berrange if (datafd[0] != -1) { 2029215a2771SDaniel P. Berrange close(datafd[0]); 2030215a2771SDaniel P. Berrange } 2031215a2771SDaniel P. Berrange if (datafd[1] != -1) { 2032215a2771SDaniel P. Berrange close(datafd[1]); 2033215a2771SDaniel P. Berrange } 2034215a2771SDaniel P. Berrange } 2035215a2771SDaniel P. Berrange 2036bd240fcaSzhanghailiang static void ga_read_sysfs_file(int dirfd, const char *pathname, char *buf, 2037bd240fcaSzhanghailiang int size, Error **errp) 2038bd240fcaSzhanghailiang { 2039bd240fcaSzhanghailiang int fd; 2040bd240fcaSzhanghailiang int res; 2041bd240fcaSzhanghailiang 2042bd240fcaSzhanghailiang errno = 0; 2043bd240fcaSzhanghailiang fd = openat(dirfd, pathname, O_RDONLY); 2044bd240fcaSzhanghailiang if (fd == -1) { 2045bd240fcaSzhanghailiang error_setg_errno(errp, errno, "open sysfs file \"%s\"", pathname); 2046bd240fcaSzhanghailiang return; 2047bd240fcaSzhanghailiang } 2048bd240fcaSzhanghailiang 2049bd240fcaSzhanghailiang res = pread(fd, buf, size, 0); 2050bd240fcaSzhanghailiang if (res == -1) { 2051bd240fcaSzhanghailiang error_setg_errno(errp, errno, "pread sysfs file \"%s\"", pathname); 2052bd240fcaSzhanghailiang } else if (res == 0) { 2053bd240fcaSzhanghailiang error_setg(errp, "pread sysfs file \"%s\": unexpected EOF", pathname); 2054bd240fcaSzhanghailiang } 2055bd240fcaSzhanghailiang close(fd); 2056bd240fcaSzhanghailiang } 2057bd240fcaSzhanghailiang 2058bd240fcaSzhanghailiang static void ga_write_sysfs_file(int dirfd, const char *pathname, 2059bd240fcaSzhanghailiang const char *buf, int size, Error **errp) 2060bd240fcaSzhanghailiang { 2061bd240fcaSzhanghailiang int fd; 2062bd240fcaSzhanghailiang 2063bd240fcaSzhanghailiang errno = 0; 2064bd240fcaSzhanghailiang fd = openat(dirfd, pathname, O_WRONLY); 2065bd240fcaSzhanghailiang if (fd == -1) { 2066bd240fcaSzhanghailiang error_setg_errno(errp, errno, "open sysfs file \"%s\"", pathname); 2067bd240fcaSzhanghailiang return; 2068bd240fcaSzhanghailiang } 2069bd240fcaSzhanghailiang 2070bd240fcaSzhanghailiang if (pwrite(fd, buf, size, 0) == -1) { 2071bd240fcaSzhanghailiang error_setg_errno(errp, errno, "pwrite sysfs file \"%s\"", pathname); 2072bd240fcaSzhanghailiang } 2073bd240fcaSzhanghailiang 2074bd240fcaSzhanghailiang close(fd); 2075bd240fcaSzhanghailiang } 2076bd240fcaSzhanghailiang 2077bd240fcaSzhanghailiang /* Transfer online/offline status between @mem_blk and the guest system. 2078bd240fcaSzhanghailiang * 2079bd240fcaSzhanghailiang * On input either @errp or *@errp must be NULL. 2080bd240fcaSzhanghailiang * 2081bd240fcaSzhanghailiang * In system-to-@mem_blk direction, the following @mem_blk fields are accessed: 2082bd240fcaSzhanghailiang * - R: mem_blk->phys_index 2083bd240fcaSzhanghailiang * - W: mem_blk->online 2084bd240fcaSzhanghailiang * - W: mem_blk->can_offline 2085bd240fcaSzhanghailiang * 2086bd240fcaSzhanghailiang * In @mem_blk-to-system direction, the following @mem_blk fields are accessed: 2087bd240fcaSzhanghailiang * - R: mem_blk->phys_index 2088bd240fcaSzhanghailiang * - R: mem_blk->online 2089bd240fcaSzhanghailiang *- R: mem_blk->can_offline 2090bd240fcaSzhanghailiang * Written members remain unmodified on error. 2091bd240fcaSzhanghailiang */ 2092bd240fcaSzhanghailiang static void transfer_memory_block(GuestMemoryBlock *mem_blk, bool sys2memblk, 2093bd240fcaSzhanghailiang GuestMemoryBlockResponse *result, 2094bd240fcaSzhanghailiang Error **errp) 2095bd240fcaSzhanghailiang { 2096bd240fcaSzhanghailiang char *dirpath; 2097bd240fcaSzhanghailiang int dirfd; 2098bd240fcaSzhanghailiang char *status; 2099bd240fcaSzhanghailiang Error *local_err = NULL; 2100bd240fcaSzhanghailiang 2101bd240fcaSzhanghailiang if (!sys2memblk) { 2102bd240fcaSzhanghailiang DIR *dp; 2103bd240fcaSzhanghailiang 2104bd240fcaSzhanghailiang if (!result) { 2105bd240fcaSzhanghailiang error_setg(errp, "Internal error, 'result' should not be NULL"); 2106bd240fcaSzhanghailiang return; 2107bd240fcaSzhanghailiang } 2108bd240fcaSzhanghailiang errno = 0; 2109bd240fcaSzhanghailiang dp = opendir("/sys/devices/system/memory/"); 2110bd240fcaSzhanghailiang /* if there is no 'memory' directory in sysfs, 2111bd240fcaSzhanghailiang * we think this VM does not support online/offline memory block, 2112bd240fcaSzhanghailiang * any other solution? 2113bd240fcaSzhanghailiang */ 2114bd240fcaSzhanghailiang if (!dp && errno == ENOENT) { 2115bd240fcaSzhanghailiang result->response = 2116bd240fcaSzhanghailiang GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_NOT_SUPPORTED; 2117bd240fcaSzhanghailiang goto out1; 2118bd240fcaSzhanghailiang } 2119bd240fcaSzhanghailiang closedir(dp); 2120bd240fcaSzhanghailiang } 2121bd240fcaSzhanghailiang 2122bd240fcaSzhanghailiang dirpath = g_strdup_printf("/sys/devices/system/memory/memory%" PRId64 "/", 2123bd240fcaSzhanghailiang mem_blk->phys_index); 2124bd240fcaSzhanghailiang dirfd = open(dirpath, O_RDONLY | O_DIRECTORY); 2125bd240fcaSzhanghailiang if (dirfd == -1) { 2126bd240fcaSzhanghailiang if (sys2memblk) { 2127bd240fcaSzhanghailiang error_setg_errno(errp, errno, "open(\"%s\")", dirpath); 2128bd240fcaSzhanghailiang } else { 2129bd240fcaSzhanghailiang if (errno == ENOENT) { 2130bd240fcaSzhanghailiang result->response = GUEST_MEMORY_BLOCK_RESPONSE_TYPE_NOT_FOUND; 2131bd240fcaSzhanghailiang } else { 2132bd240fcaSzhanghailiang result->response = 2133bd240fcaSzhanghailiang GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_FAILED; 2134bd240fcaSzhanghailiang } 2135bd240fcaSzhanghailiang } 2136bd240fcaSzhanghailiang g_free(dirpath); 2137bd240fcaSzhanghailiang goto out1; 2138bd240fcaSzhanghailiang } 2139bd240fcaSzhanghailiang g_free(dirpath); 2140bd240fcaSzhanghailiang 2141bd240fcaSzhanghailiang status = g_malloc0(10); 2142bd240fcaSzhanghailiang ga_read_sysfs_file(dirfd, "state", status, 10, &local_err); 2143bd240fcaSzhanghailiang if (local_err) { 2144bd240fcaSzhanghailiang /* treat with sysfs file that not exist in old kernel */ 2145bd240fcaSzhanghailiang if (errno == ENOENT) { 2146bd240fcaSzhanghailiang error_free(local_err); 2147bd240fcaSzhanghailiang if (sys2memblk) { 2148bd240fcaSzhanghailiang mem_blk->online = true; 2149bd240fcaSzhanghailiang mem_blk->can_offline = false; 2150bd240fcaSzhanghailiang } else if (!mem_blk->online) { 2151bd240fcaSzhanghailiang result->response = 2152bd240fcaSzhanghailiang GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_NOT_SUPPORTED; 2153bd240fcaSzhanghailiang } 2154bd240fcaSzhanghailiang } else { 2155bd240fcaSzhanghailiang if (sys2memblk) { 2156bd240fcaSzhanghailiang error_propagate(errp, local_err); 2157bd240fcaSzhanghailiang } else { 2158bd240fcaSzhanghailiang result->response = 2159bd240fcaSzhanghailiang GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_FAILED; 2160bd240fcaSzhanghailiang } 2161bd240fcaSzhanghailiang } 2162bd240fcaSzhanghailiang goto out2; 2163bd240fcaSzhanghailiang } 2164bd240fcaSzhanghailiang 2165bd240fcaSzhanghailiang if (sys2memblk) { 2166bd240fcaSzhanghailiang char removable = '0'; 2167bd240fcaSzhanghailiang 2168bd240fcaSzhanghailiang mem_blk->online = (strncmp(status, "online", 6) == 0); 2169bd240fcaSzhanghailiang 2170bd240fcaSzhanghailiang ga_read_sysfs_file(dirfd, "removable", &removable, 1, &local_err); 2171bd240fcaSzhanghailiang if (local_err) { 217267cc32ebSVeres Lajos /* if no 'removable' file, it doesn't support offline mem blk */ 2173bd240fcaSzhanghailiang if (errno == ENOENT) { 2174bd240fcaSzhanghailiang error_free(local_err); 2175bd240fcaSzhanghailiang mem_blk->can_offline = false; 2176bd240fcaSzhanghailiang } else { 2177bd240fcaSzhanghailiang error_propagate(errp, local_err); 2178bd240fcaSzhanghailiang } 2179bd240fcaSzhanghailiang } else { 2180bd240fcaSzhanghailiang mem_blk->can_offline = (removable != '0'); 2181bd240fcaSzhanghailiang } 2182bd240fcaSzhanghailiang } else { 2183bd240fcaSzhanghailiang if (mem_blk->online != (strncmp(status, "online", 6) == 0)) { 2184bd240fcaSzhanghailiang char *new_state = mem_blk->online ? g_strdup("online") : 2185bd240fcaSzhanghailiang g_strdup("offline"); 2186bd240fcaSzhanghailiang 2187bd240fcaSzhanghailiang ga_write_sysfs_file(dirfd, "state", new_state, strlen(new_state), 2188bd240fcaSzhanghailiang &local_err); 2189bd240fcaSzhanghailiang g_free(new_state); 2190bd240fcaSzhanghailiang if (local_err) { 2191bd240fcaSzhanghailiang error_free(local_err); 2192bd240fcaSzhanghailiang result->response = 2193bd240fcaSzhanghailiang GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_FAILED; 2194bd240fcaSzhanghailiang goto out2; 2195bd240fcaSzhanghailiang } 2196bd240fcaSzhanghailiang 2197bd240fcaSzhanghailiang result->response = GUEST_MEMORY_BLOCK_RESPONSE_TYPE_SUCCESS; 2198bd240fcaSzhanghailiang result->has_error_code = false; 2199bd240fcaSzhanghailiang } /* otherwise pretend successful re-(on|off)-lining */ 2200bd240fcaSzhanghailiang } 2201bd240fcaSzhanghailiang g_free(status); 2202bd240fcaSzhanghailiang close(dirfd); 2203bd240fcaSzhanghailiang return; 2204bd240fcaSzhanghailiang 2205bd240fcaSzhanghailiang out2: 2206bd240fcaSzhanghailiang g_free(status); 2207bd240fcaSzhanghailiang close(dirfd); 2208bd240fcaSzhanghailiang out1: 2209bd240fcaSzhanghailiang if (!sys2memblk) { 2210bd240fcaSzhanghailiang result->has_error_code = true; 2211bd240fcaSzhanghailiang result->error_code = errno; 2212bd240fcaSzhanghailiang } 2213bd240fcaSzhanghailiang } 2214bd240fcaSzhanghailiang 2215a065aaa9Szhanghailiang GuestMemoryBlockList *qmp_guest_get_memory_blocks(Error **errp) 2216a065aaa9Szhanghailiang { 2217bd240fcaSzhanghailiang GuestMemoryBlockList *head, **link; 2218bd240fcaSzhanghailiang Error *local_err = NULL; 2219bd240fcaSzhanghailiang struct dirent *de; 2220bd240fcaSzhanghailiang DIR *dp; 2221bd240fcaSzhanghailiang 2222bd240fcaSzhanghailiang head = NULL; 2223bd240fcaSzhanghailiang link = &head; 2224bd240fcaSzhanghailiang 2225bd240fcaSzhanghailiang dp = opendir("/sys/devices/system/memory/"); 2226bd240fcaSzhanghailiang if (!dp) { 2227f693fe6eSMichael Roth /* it's ok if this happens to be a system that doesn't expose 2228f693fe6eSMichael Roth * memory blocks via sysfs, but otherwise we should report 2229f693fe6eSMichael Roth * an error 2230f693fe6eSMichael Roth */ 2231f693fe6eSMichael Roth if (errno != ENOENT) { 2232bd240fcaSzhanghailiang error_setg_errno(errp, errno, "Can't open directory" 2233bd240fcaSzhanghailiang "\"/sys/devices/system/memory/\"\n"); 2234f693fe6eSMichael Roth } 2235bd240fcaSzhanghailiang return NULL; 2236bd240fcaSzhanghailiang } 2237bd240fcaSzhanghailiang 2238bd240fcaSzhanghailiang /* Note: the phys_index of memory block may be discontinuous, 2239bd240fcaSzhanghailiang * this is because a memblk is the unit of the Sparse Memory design, which 2240bd240fcaSzhanghailiang * allows discontinuous memory ranges (ex. NUMA), so here we should 2241bd240fcaSzhanghailiang * traverse the memory block directory. 2242bd240fcaSzhanghailiang */ 2243bd240fcaSzhanghailiang while ((de = readdir(dp)) != NULL) { 2244bd240fcaSzhanghailiang GuestMemoryBlock *mem_blk; 2245bd240fcaSzhanghailiang GuestMemoryBlockList *entry; 2246bd240fcaSzhanghailiang 2247bd240fcaSzhanghailiang if ((strncmp(de->d_name, "memory", 6) != 0) || 2248bd240fcaSzhanghailiang !(de->d_type & DT_DIR)) { 2249bd240fcaSzhanghailiang continue; 2250bd240fcaSzhanghailiang } 2251bd240fcaSzhanghailiang 2252bd240fcaSzhanghailiang mem_blk = g_malloc0(sizeof *mem_blk); 2253bd240fcaSzhanghailiang /* The d_name is "memoryXXX", phys_index is block id, same as XXX */ 2254bd240fcaSzhanghailiang mem_blk->phys_index = strtoul(&de->d_name[6], NULL, 10); 2255bd240fcaSzhanghailiang mem_blk->has_can_offline = true; /* lolspeak ftw */ 2256bd240fcaSzhanghailiang transfer_memory_block(mem_blk, true, NULL, &local_err); 2257bd240fcaSzhanghailiang 2258bd240fcaSzhanghailiang entry = g_malloc0(sizeof *entry); 2259bd240fcaSzhanghailiang entry->value = mem_blk; 2260bd240fcaSzhanghailiang 2261bd240fcaSzhanghailiang *link = entry; 2262bd240fcaSzhanghailiang link = &entry->next; 2263bd240fcaSzhanghailiang } 2264bd240fcaSzhanghailiang 2265bd240fcaSzhanghailiang closedir(dp); 2266bd240fcaSzhanghailiang if (local_err == NULL) { 2267bd240fcaSzhanghailiang /* there's no guest with zero memory blocks */ 2268bd240fcaSzhanghailiang if (head == NULL) { 2269bd240fcaSzhanghailiang error_setg(errp, "guest reported zero memory blocks!"); 2270bd240fcaSzhanghailiang } 2271bd240fcaSzhanghailiang return head; 2272bd240fcaSzhanghailiang } 2273bd240fcaSzhanghailiang 2274bd240fcaSzhanghailiang qapi_free_GuestMemoryBlockList(head); 2275bd240fcaSzhanghailiang error_propagate(errp, local_err); 2276a065aaa9Szhanghailiang return NULL; 2277a065aaa9Szhanghailiang } 2278a065aaa9Szhanghailiang 2279a065aaa9Szhanghailiang GuestMemoryBlockResponseList * 2280a065aaa9Szhanghailiang qmp_guest_set_memory_blocks(GuestMemoryBlockList *mem_blks, Error **errp) 2281a065aaa9Szhanghailiang { 228232ca7927Szhanghailiang GuestMemoryBlockResponseList *head, **link; 228332ca7927Szhanghailiang Error *local_err = NULL; 228432ca7927Szhanghailiang 228532ca7927Szhanghailiang head = NULL; 228632ca7927Szhanghailiang link = &head; 228732ca7927Szhanghailiang 228832ca7927Szhanghailiang while (mem_blks != NULL) { 228932ca7927Szhanghailiang GuestMemoryBlockResponse *result; 229032ca7927Szhanghailiang GuestMemoryBlockResponseList *entry; 229132ca7927Szhanghailiang GuestMemoryBlock *current_mem_blk = mem_blks->value; 229232ca7927Szhanghailiang 229332ca7927Szhanghailiang result = g_malloc0(sizeof(*result)); 229432ca7927Szhanghailiang result->phys_index = current_mem_blk->phys_index; 229532ca7927Szhanghailiang transfer_memory_block(current_mem_blk, false, result, &local_err); 229632ca7927Szhanghailiang if (local_err) { /* should never happen */ 229732ca7927Szhanghailiang goto err; 229832ca7927Szhanghailiang } 229932ca7927Szhanghailiang entry = g_malloc0(sizeof *entry); 230032ca7927Szhanghailiang entry->value = result; 230132ca7927Szhanghailiang 230232ca7927Szhanghailiang *link = entry; 230332ca7927Szhanghailiang link = &entry->next; 230432ca7927Szhanghailiang mem_blks = mem_blks->next; 230532ca7927Szhanghailiang } 230632ca7927Szhanghailiang 230732ca7927Szhanghailiang return head; 230832ca7927Szhanghailiang err: 230932ca7927Szhanghailiang qapi_free_GuestMemoryBlockResponseList(head); 231032ca7927Szhanghailiang error_propagate(errp, local_err); 2311a065aaa9Szhanghailiang return NULL; 2312a065aaa9Szhanghailiang } 2313a065aaa9Szhanghailiang 2314a065aaa9Szhanghailiang GuestMemoryBlockInfo *qmp_guest_get_memory_block_info(Error **errp) 2315a065aaa9Szhanghailiang { 2316ef82b60bSzhanghailiang Error *local_err = NULL; 2317ef82b60bSzhanghailiang char *dirpath; 2318ef82b60bSzhanghailiang int dirfd; 2319ef82b60bSzhanghailiang char *buf; 2320ef82b60bSzhanghailiang GuestMemoryBlockInfo *info; 2321ef82b60bSzhanghailiang 2322ef82b60bSzhanghailiang dirpath = g_strdup_printf("/sys/devices/system/memory/"); 2323ef82b60bSzhanghailiang dirfd = open(dirpath, O_RDONLY | O_DIRECTORY); 2324ef82b60bSzhanghailiang if (dirfd == -1) { 2325ef82b60bSzhanghailiang error_setg_errno(errp, errno, "open(\"%s\")", dirpath); 2326ef82b60bSzhanghailiang g_free(dirpath); 2327a065aaa9Szhanghailiang return NULL; 2328a065aaa9Szhanghailiang } 2329ef82b60bSzhanghailiang g_free(dirpath); 2330ef82b60bSzhanghailiang 2331ef82b60bSzhanghailiang buf = g_malloc0(20); 2332ef82b60bSzhanghailiang ga_read_sysfs_file(dirfd, "block_size_bytes", buf, 20, &local_err); 23338ce1ee46SShannon Zhao close(dirfd); 2334ef82b60bSzhanghailiang if (local_err) { 2335ef82b60bSzhanghailiang g_free(buf); 2336ef82b60bSzhanghailiang error_propagate(errp, local_err); 2337ef82b60bSzhanghailiang return NULL; 2338ef82b60bSzhanghailiang } 2339ef82b60bSzhanghailiang 2340ef82b60bSzhanghailiang info = g_new0(GuestMemoryBlockInfo, 1); 2341ef82b60bSzhanghailiang info->size = strtol(buf, NULL, 16); /* the unit is bytes */ 2342ef82b60bSzhanghailiang 2343ef82b60bSzhanghailiang g_free(buf); 2344ef82b60bSzhanghailiang 2345ef82b60bSzhanghailiang return info; 2346ef82b60bSzhanghailiang } 2347a065aaa9Szhanghailiang 2348e72c3f2eSMichael Roth #else /* defined(__linux__) */ 2349e72c3f2eSMichael Roth 235077dbc81bSMarkus Armbruster void qmp_guest_suspend_disk(Error **errp) 2351e72c3f2eSMichael Roth { 2352c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2353e72c3f2eSMichael Roth } 2354e72c3f2eSMichael Roth 235577dbc81bSMarkus Armbruster void qmp_guest_suspend_ram(Error **errp) 2356e72c3f2eSMichael Roth { 2357c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2358e72c3f2eSMichael Roth } 2359e72c3f2eSMichael Roth 236077dbc81bSMarkus Armbruster void qmp_guest_suspend_hybrid(Error **errp) 2361e72c3f2eSMichael Roth { 2362c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2363e72c3f2eSMichael Roth } 2364e72c3f2eSMichael Roth 2365e72c3f2eSMichael Roth GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp) 2366e72c3f2eSMichael Roth { 2367c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2368e72c3f2eSMichael Roth return NULL; 2369e72c3f2eSMichael Roth } 2370e72c3f2eSMichael Roth 2371d2baff62SLaszlo Ersek GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp) 2372d2baff62SLaszlo Ersek { 2373c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2374d2baff62SLaszlo Ersek return NULL; 2375d2baff62SLaszlo Ersek } 2376d2baff62SLaszlo Ersek 2377cbb65fc2SLaszlo Ersek int64_t qmp_guest_set_vcpus(GuestLogicalProcessorList *vcpus, Error **errp) 2378cbb65fc2SLaszlo Ersek { 2379c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2380cbb65fc2SLaszlo Ersek return -1; 2381cbb65fc2SLaszlo Ersek } 2382cbb65fc2SLaszlo Ersek 2383215a2771SDaniel P. Berrange void qmp_guest_set_user_password(const char *username, 2384215a2771SDaniel P. Berrange const char *password, 2385215a2771SDaniel P. Berrange bool crypted, 2386215a2771SDaniel P. Berrange Error **errp) 2387215a2771SDaniel P. Berrange { 2388c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2389215a2771SDaniel P. Berrange } 2390215a2771SDaniel P. Berrange 2391a065aaa9Szhanghailiang GuestMemoryBlockList *qmp_guest_get_memory_blocks(Error **errp) 2392a065aaa9Szhanghailiang { 2393c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2394a065aaa9Szhanghailiang return NULL; 2395a065aaa9Szhanghailiang } 2396a065aaa9Szhanghailiang 2397a065aaa9Szhanghailiang GuestMemoryBlockResponseList * 2398a065aaa9Szhanghailiang qmp_guest_set_memory_blocks(GuestMemoryBlockList *mem_blks, Error **errp) 2399a065aaa9Szhanghailiang { 2400c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2401a065aaa9Szhanghailiang return NULL; 2402a065aaa9Szhanghailiang } 2403a065aaa9Szhanghailiang 2404a065aaa9Szhanghailiang GuestMemoryBlockInfo *qmp_guest_get_memory_block_info(Error **errp) 2405a065aaa9Szhanghailiang { 2406c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2407a065aaa9Szhanghailiang return NULL; 2408a065aaa9Szhanghailiang } 2409a065aaa9Szhanghailiang 2410e72c3f2eSMichael Roth #endif 2411e72c3f2eSMichael Roth 2412d35d4cb5SMichael Roth #if !defined(CONFIG_FSFREEZE) 2413d35d4cb5SMichael Roth 241446d4c572STomoki Sekiyama GuestFilesystemInfoList *qmp_guest_get_fsinfo(Error **errp) 241546d4c572STomoki Sekiyama { 2416c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 241746d4c572STomoki Sekiyama return NULL; 241846d4c572STomoki Sekiyama } 241946d4c572STomoki Sekiyama 242077dbc81bSMarkus Armbruster GuestFsfreezeStatus qmp_guest_fsfreeze_status(Error **errp) 2421d35d4cb5SMichael Roth { 2422c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2423d35d4cb5SMichael Roth 2424d35d4cb5SMichael Roth return 0; 2425d35d4cb5SMichael Roth } 2426d35d4cb5SMichael Roth 242777dbc81bSMarkus Armbruster int64_t qmp_guest_fsfreeze_freeze(Error **errp) 2428d35d4cb5SMichael Roth { 2429c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2430d35d4cb5SMichael Roth 2431d35d4cb5SMichael Roth return 0; 2432d35d4cb5SMichael Roth } 2433d35d4cb5SMichael Roth 2434e99bce20STomoki Sekiyama int64_t qmp_guest_fsfreeze_freeze_list(bool has_mountpoints, 2435e99bce20STomoki Sekiyama strList *mountpoints, 2436e99bce20STomoki Sekiyama Error **errp) 2437e99bce20STomoki Sekiyama { 2438c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2439e99bce20STomoki Sekiyama 2440e99bce20STomoki Sekiyama return 0; 2441e99bce20STomoki Sekiyama } 2442e99bce20STomoki Sekiyama 244377dbc81bSMarkus Armbruster int64_t qmp_guest_fsfreeze_thaw(Error **errp) 2444d35d4cb5SMichael Roth { 2445c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2446d35d4cb5SMichael Roth 2447d35d4cb5SMichael Roth return 0; 2448d35d4cb5SMichael Roth } 2449eab5fd59SPaolo Bonzini #endif /* CONFIG_FSFREEZE */ 2450d35d4cb5SMichael Roth 2451eab5fd59SPaolo Bonzini #if !defined(CONFIG_FSTRIM) 2452e82855d9SJustin Ossevoort GuestFilesystemTrimResponse * 2453e82855d9SJustin Ossevoort qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **errp) 2454eab5fd59SPaolo Bonzini { 2455c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2456e82855d9SJustin Ossevoort return NULL; 2457eab5fd59SPaolo Bonzini } 2458d35d4cb5SMichael Roth #endif 2459d35d4cb5SMichael Roth 24601281c08aSTomoki Sekiyama /* add unsupported commands to the blacklist */ 24611281c08aSTomoki Sekiyama GList *ga_command_blacklist_init(GList *blacklist) 24621281c08aSTomoki Sekiyama { 24631281c08aSTomoki Sekiyama #if !defined(__linux__) 24641281c08aSTomoki Sekiyama { 24651281c08aSTomoki Sekiyama const char *list[] = { 24661281c08aSTomoki Sekiyama "guest-suspend-disk", "guest-suspend-ram", 24671281c08aSTomoki Sekiyama "guest-suspend-hybrid", "guest-network-get-interfaces", 24680dd38a03Szhanghailiang "guest-get-vcpus", "guest-set-vcpus", 24690dd38a03Szhanghailiang "guest-get-memory-blocks", "guest-set-memory-blocks", 24700dd38a03Szhanghailiang "guest-get-memory-block-size", NULL}; 24711281c08aSTomoki Sekiyama char **p = (char **)list; 24721281c08aSTomoki Sekiyama 24731281c08aSTomoki Sekiyama while (*p) { 24744bca81ceSMarc-André Lureau blacklist = g_list_append(blacklist, g_strdup(*p++)); 24751281c08aSTomoki Sekiyama } 24761281c08aSTomoki Sekiyama } 24771281c08aSTomoki Sekiyama #endif 24781281c08aSTomoki Sekiyama 24791281c08aSTomoki Sekiyama #if !defined(CONFIG_FSFREEZE) 24801281c08aSTomoki Sekiyama { 24811281c08aSTomoki Sekiyama const char *list[] = { 24821281c08aSTomoki Sekiyama "guest-get-fsinfo", "guest-fsfreeze-status", 24831281c08aSTomoki Sekiyama "guest-fsfreeze-freeze", "guest-fsfreeze-freeze-list", 24841281c08aSTomoki Sekiyama "guest-fsfreeze-thaw", "guest-get-fsinfo", NULL}; 24851281c08aSTomoki Sekiyama char **p = (char **)list; 24861281c08aSTomoki Sekiyama 24871281c08aSTomoki Sekiyama while (*p) { 24884bca81ceSMarc-André Lureau blacklist = g_list_append(blacklist, g_strdup(*p++)); 24891281c08aSTomoki Sekiyama } 24901281c08aSTomoki Sekiyama } 24911281c08aSTomoki Sekiyama #endif 24921281c08aSTomoki Sekiyama 24931281c08aSTomoki Sekiyama #if !defined(CONFIG_FSTRIM) 24944bca81ceSMarc-André Lureau blacklist = g_list_append(blacklist, g_strdup("guest-fstrim")); 24951281c08aSTomoki Sekiyama #endif 24961281c08aSTomoki Sekiyama 24971281c08aSTomoki Sekiyama return blacklist; 24981281c08aSTomoki Sekiyama } 24991281c08aSTomoki Sekiyama 2500c216e5adSMichael Roth /* register init/cleanup routines for stateful command groups */ 2501c216e5adSMichael Roth void ga_command_state_init(GAState *s, GACommandState *cs) 2502c216e5adSMichael Roth { 2503c216e5adSMichael Roth #if defined(CONFIG_FSFREEZE) 2504f22d85e9SMichael Roth ga_command_state_add(cs, NULL, guest_fsfreeze_cleanup); 2505c216e5adSMichael Roth #endif 2506c216e5adSMichael Roth } 2507