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> 21c689b4f1SLaszlo Ersek #include <stdio.h> 22c689b4f1SLaszlo Ersek #include <string.h> 23c689b4f1SLaszlo Ersek #include <sys/stat.h> 24d2baff62SLaszlo Ersek #include <inttypes.h> 25c216e5adSMichael Roth #include "qga/guest-agent-core.h" 26c216e5adSMichael Roth #include "qga-qmp-commands.h" 277b1b5d19SPaolo Bonzini #include "qapi/qmp/qerror.h" 281de7afc9SPaolo Bonzini #include "qemu/queue.h" 291de7afc9SPaolo Bonzini #include "qemu/host-utils.h" 30c216e5adSMichael Roth 312c02cbf6SLuiz Capitulino #ifndef CONFIG_HAS_ENVIRON 32eecae147SAndreas Färber #ifdef __APPLE__ 33eecae147SAndreas Färber #include <crt_externs.h> 34eecae147SAndreas Färber #define environ (*_NSGetEnviron()) 35eecae147SAndreas Färber #else 362c02cbf6SLuiz Capitulino extern char **environ; 372c02cbf6SLuiz Capitulino #endif 38eecae147SAndreas Färber #endif 392c02cbf6SLuiz Capitulino 40e72c3f2eSMichael Roth #if defined(__linux__) 41e72c3f2eSMichael Roth #include <mntent.h> 42e72c3f2eSMichael Roth #include <linux/fs.h> 43e72c3f2eSMichael Roth #include <ifaddrs.h> 44e72c3f2eSMichael Roth #include <arpa/inet.h> 45e72c3f2eSMichael Roth #include <sys/socket.h> 46e72c3f2eSMichael Roth #include <net/if.h> 47e72c3f2eSMichael Roth 48eab5fd59SPaolo Bonzini #ifdef FIFREEZE 49e72c3f2eSMichael Roth #define CONFIG_FSFREEZE 50e72c3f2eSMichael Roth #endif 51eab5fd59SPaolo Bonzini #ifdef FITRIM 52eab5fd59SPaolo Bonzini #define CONFIG_FSTRIM 53eab5fd59SPaolo Bonzini #endif 54e72c3f2eSMichael Roth #endif 55e72c3f2eSMichael Roth 56d220a6dfSLuiz Capitulino static void ga_wait_child(pid_t pid, int *status, Error **err) 57d220a6dfSLuiz Capitulino { 58d220a6dfSLuiz Capitulino pid_t rpid; 59d220a6dfSLuiz Capitulino 60d220a6dfSLuiz Capitulino *status = 0; 61d220a6dfSLuiz Capitulino 62d220a6dfSLuiz Capitulino do { 63d220a6dfSLuiz Capitulino rpid = waitpid(pid, status, 0); 64d220a6dfSLuiz Capitulino } while (rpid == -1 && errno == EINTR); 65d220a6dfSLuiz Capitulino 66d220a6dfSLuiz Capitulino if (rpid == -1) { 67d220a6dfSLuiz Capitulino error_setg_errno(err, errno, "failed to wait for child (pid: %d)", pid); 68d220a6dfSLuiz Capitulino return; 69d220a6dfSLuiz Capitulino } 70d220a6dfSLuiz Capitulino 71d220a6dfSLuiz Capitulino g_assert(rpid == pid); 72d220a6dfSLuiz Capitulino } 73d220a6dfSLuiz Capitulino 74c216e5adSMichael Roth void qmp_guest_shutdown(bool has_mode, const char *mode, Error **err) 75c216e5adSMichael Roth { 76c216e5adSMichael Roth const char *shutdown_flag; 77d220a6dfSLuiz Capitulino Error *local_err = NULL; 78d220a6dfSLuiz Capitulino pid_t pid; 793674838cSLuiz Capitulino int status; 80c216e5adSMichael Roth 81c216e5adSMichael Roth slog("guest-shutdown called, mode: %s", mode); 82c216e5adSMichael Roth if (!has_mode || strcmp(mode, "powerdown") == 0) { 83c216e5adSMichael Roth shutdown_flag = "-P"; 84c216e5adSMichael Roth } else if (strcmp(mode, "halt") == 0) { 85c216e5adSMichael Roth shutdown_flag = "-H"; 86c216e5adSMichael Roth } else if (strcmp(mode, "reboot") == 0) { 87c216e5adSMichael Roth shutdown_flag = "-r"; 88c216e5adSMichael Roth } else { 89d220a6dfSLuiz Capitulino error_setg(err, 90d220a6dfSLuiz Capitulino "mode is invalid (valid values are: halt|powerdown|reboot"); 91c216e5adSMichael Roth return; 92c216e5adSMichael Roth } 93c216e5adSMichael Roth 94d5dd3498SLuiz Capitulino pid = fork(); 95d5dd3498SLuiz Capitulino if (pid == 0) { 96c216e5adSMichael Roth /* child, start the shutdown */ 97c216e5adSMichael Roth setsid(); 983674838cSLuiz Capitulino reopen_fd_to_null(0); 993674838cSLuiz Capitulino reopen_fd_to_null(1); 1003674838cSLuiz Capitulino reopen_fd_to_null(2); 101c216e5adSMichael Roth 102485e741cSwhitearchey execle("/sbin/shutdown", "shutdown", "-h", shutdown_flag, "+0", 1033674838cSLuiz Capitulino "hypervisor initiated shutdown", (char*)NULL, environ); 1043674838cSLuiz Capitulino _exit(EXIT_FAILURE); 105d5dd3498SLuiz Capitulino } else if (pid < 0) { 106d220a6dfSLuiz Capitulino error_setg_errno(err, errno, "failed to create child process"); 107d5dd3498SLuiz Capitulino return; 108d5dd3498SLuiz Capitulino } 109d5dd3498SLuiz Capitulino 110d220a6dfSLuiz Capitulino ga_wait_child(pid, &status, &local_err); 11184d18f06SMarkus Armbruster if (local_err) { 112d220a6dfSLuiz Capitulino error_propagate(err, local_err); 113d220a6dfSLuiz Capitulino return; 114d220a6dfSLuiz Capitulino } 115d220a6dfSLuiz Capitulino 116d220a6dfSLuiz Capitulino if (!WIFEXITED(status)) { 117d220a6dfSLuiz Capitulino error_setg(err, "child process has terminated abnormally"); 118d220a6dfSLuiz Capitulino return; 119d220a6dfSLuiz Capitulino } 120d220a6dfSLuiz Capitulino 121d220a6dfSLuiz Capitulino if (WEXITSTATUS(status)) { 122d220a6dfSLuiz Capitulino error_setg(err, "child process has failed to shutdown"); 123d220a6dfSLuiz Capitulino return; 124d220a6dfSLuiz Capitulino } 125d220a6dfSLuiz Capitulino 126085d8134SPeter Maydell /* succeeded */ 127c216e5adSMichael Roth } 128c216e5adSMichael Roth 1296912e6a9SLei Li int64_t qmp_guest_get_time(Error **errp) 1306912e6a9SLei Li { 1316912e6a9SLei Li int ret; 1326912e6a9SLei Li qemu_timeval tq; 1336912e6a9SLei Li int64_t time_ns; 1346912e6a9SLei Li 1356912e6a9SLei Li ret = qemu_gettimeofday(&tq); 1366912e6a9SLei Li if (ret < 0) { 1376912e6a9SLei Li error_setg_errno(errp, errno, "Failed to get time"); 1386912e6a9SLei Li return -1; 1396912e6a9SLei Li } 1406912e6a9SLei Li 1416912e6a9SLei Li time_ns = tq.tv_sec * 1000000000LL + tq.tv_usec * 1000; 1426912e6a9SLei Li return time_ns; 1436912e6a9SLei Li } 1446912e6a9SLei Li 1452c958923SMichal Privoznik void qmp_guest_set_time(bool has_time, int64_t time_ns, Error **errp) 146a1bca57fSLei Li { 147a1bca57fSLei Li int ret; 148a1bca57fSLei Li int status; 149a1bca57fSLei Li pid_t pid; 150a1bca57fSLei Li Error *local_err = NULL; 151a1bca57fSLei Li struct timeval tv; 152a1bca57fSLei Li 1532c958923SMichal Privoznik /* If user has passed a time, validate and set it. */ 1542c958923SMichal Privoznik if (has_time) { 155a1bca57fSLei Li /* year-2038 will overflow in case time_t is 32bit */ 156a1bca57fSLei Li if (time_ns / 1000000000 != (time_t)(time_ns / 1000000000)) { 157a1bca57fSLei Li error_setg(errp, "Time %" PRId64 " is too large", time_ns); 158a1bca57fSLei Li return; 159a1bca57fSLei Li } 160a1bca57fSLei Li 161a1bca57fSLei Li tv.tv_sec = time_ns / 1000000000; 162a1bca57fSLei Li tv.tv_usec = (time_ns % 1000000000) / 1000; 163a1bca57fSLei Li 164a1bca57fSLei Li ret = settimeofday(&tv, NULL); 165a1bca57fSLei Li if (ret < 0) { 166a1bca57fSLei Li error_setg_errno(errp, errno, "Failed to set time to guest"); 167a1bca57fSLei Li return; 168a1bca57fSLei Li } 1692c958923SMichal Privoznik } 170a1bca57fSLei Li 1712c958923SMichal Privoznik /* Now, if user has passed a time to set and the system time is set, we 1722c958923SMichal Privoznik * just need to synchronize the hardware clock. However, if no time was 1732c958923SMichal Privoznik * passed, user is requesting the opposite: set the system time from the 174*1634df56SAmos Kong * hardware clock (RTC). */ 175a1bca57fSLei Li pid = fork(); 176a1bca57fSLei Li if (pid == 0) { 177a1bca57fSLei Li setsid(); 178a1bca57fSLei Li reopen_fd_to_null(0); 179a1bca57fSLei Li reopen_fd_to_null(1); 180a1bca57fSLei Li reopen_fd_to_null(2); 181a1bca57fSLei Li 1822c958923SMichal Privoznik /* Use '/sbin/hwclock -w' to set RTC from the system time, 1832c958923SMichal Privoznik * or '/sbin/hwclock -s' to set the system time from RTC. */ 1842c958923SMichal Privoznik execle("/sbin/hwclock", "hwclock", has_time ? "-w" : "-s", 1852c958923SMichal Privoznik NULL, environ); 186a1bca57fSLei Li _exit(EXIT_FAILURE); 187a1bca57fSLei Li } else if (pid < 0) { 188a1bca57fSLei Li error_setg_errno(errp, errno, "failed to create child process"); 189a1bca57fSLei Li return; 190a1bca57fSLei Li } 191a1bca57fSLei Li 192a1bca57fSLei Li ga_wait_child(pid, &status, &local_err); 19384d18f06SMarkus Armbruster if (local_err) { 194a1bca57fSLei Li error_propagate(errp, local_err); 195a1bca57fSLei Li return; 196a1bca57fSLei Li } 197a1bca57fSLei Li 198a1bca57fSLei Li if (!WIFEXITED(status)) { 199a1bca57fSLei Li error_setg(errp, "child process has terminated abnormally"); 200a1bca57fSLei Li return; 201a1bca57fSLei Li } 202a1bca57fSLei Li 203a1bca57fSLei Li if (WEXITSTATUS(status)) { 204a1bca57fSLei Li error_setg(errp, "hwclock failed to set hardware clock to system time"); 205a1bca57fSLei Li return; 206a1bca57fSLei Li } 207a1bca57fSLei Li } 208a1bca57fSLei Li 209c216e5adSMichael Roth typedef struct GuestFileHandle { 210c216e5adSMichael Roth uint64_t id; 211c216e5adSMichael Roth FILE *fh; 212c216e5adSMichael Roth QTAILQ_ENTRY(GuestFileHandle) next; 213c216e5adSMichael Roth } GuestFileHandle; 214c216e5adSMichael Roth 215c216e5adSMichael Roth static struct { 216c216e5adSMichael Roth QTAILQ_HEAD(, GuestFileHandle) filehandles; 217c216e5adSMichael Roth } guest_file_state; 218c216e5adSMichael Roth 21939097dafSMichael Roth static int64_t guest_file_handle_add(FILE *fh, Error **errp) 220c216e5adSMichael Roth { 221c216e5adSMichael Roth GuestFileHandle *gfh; 22239097dafSMichael Roth int64_t handle; 22339097dafSMichael Roth 22439097dafSMichael Roth handle = ga_get_fd_handle(ga_state, errp); 22539097dafSMichael Roth if (error_is_set(errp)) { 22639097dafSMichael Roth return 0; 22739097dafSMichael Roth } 228c216e5adSMichael Roth 229c216e5adSMichael Roth gfh = g_malloc0(sizeof(GuestFileHandle)); 23039097dafSMichael Roth gfh->id = handle; 231c216e5adSMichael Roth gfh->fh = fh; 232c216e5adSMichael Roth QTAILQ_INSERT_TAIL(&guest_file_state.filehandles, gfh, next); 23339097dafSMichael Roth 23439097dafSMichael Roth return handle; 235c216e5adSMichael Roth } 236c216e5adSMichael Roth 237a9de6d01SLuiz Capitulino static GuestFileHandle *guest_file_handle_find(int64_t id, Error **err) 238c216e5adSMichael Roth { 239c216e5adSMichael Roth GuestFileHandle *gfh; 240c216e5adSMichael Roth 241c216e5adSMichael Roth QTAILQ_FOREACH(gfh, &guest_file_state.filehandles, next) 242c216e5adSMichael Roth { 243c216e5adSMichael Roth if (gfh->id == id) { 244c216e5adSMichael Roth return gfh; 245c216e5adSMichael Roth } 246c216e5adSMichael Roth } 247c216e5adSMichael Roth 248a9de6d01SLuiz Capitulino error_setg(err, "handle '%" PRId64 "' has not been found", id); 249c216e5adSMichael Roth return NULL; 250c216e5adSMichael Roth } 251c216e5adSMichael Roth 252c689b4f1SLaszlo Ersek typedef const char * const ccpc; 253c689b4f1SLaszlo Ersek 2548fe6bbcaSLaszlo Ersek #ifndef O_BINARY 2558fe6bbcaSLaszlo Ersek #define O_BINARY 0 2568fe6bbcaSLaszlo Ersek #endif 2578fe6bbcaSLaszlo Ersek 258c689b4f1SLaszlo Ersek /* http://pubs.opengroup.org/onlinepubs/9699919799/functions/fopen.html */ 259c689b4f1SLaszlo Ersek static const struct { 260c689b4f1SLaszlo Ersek ccpc *forms; 261c689b4f1SLaszlo Ersek int oflag_base; 262c689b4f1SLaszlo Ersek } guest_file_open_modes[] = { 2638fe6bbcaSLaszlo Ersek { (ccpc[]){ "r", NULL }, O_RDONLY }, 2648fe6bbcaSLaszlo Ersek { (ccpc[]){ "rb", NULL }, O_RDONLY | O_BINARY }, 2658fe6bbcaSLaszlo Ersek { (ccpc[]){ "w", NULL }, O_WRONLY | O_CREAT | O_TRUNC }, 2668fe6bbcaSLaszlo Ersek { (ccpc[]){ "wb", NULL }, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY }, 2678fe6bbcaSLaszlo Ersek { (ccpc[]){ "a", NULL }, O_WRONLY | O_CREAT | O_APPEND }, 2688fe6bbcaSLaszlo Ersek { (ccpc[]){ "ab", NULL }, O_WRONLY | O_CREAT | O_APPEND | O_BINARY }, 2698fe6bbcaSLaszlo Ersek { (ccpc[]){ "r+", NULL }, O_RDWR }, 2708fe6bbcaSLaszlo Ersek { (ccpc[]){ "rb+", "r+b", NULL }, O_RDWR | O_BINARY }, 2718fe6bbcaSLaszlo Ersek { (ccpc[]){ "w+", NULL }, O_RDWR | O_CREAT | O_TRUNC }, 2728fe6bbcaSLaszlo Ersek { (ccpc[]){ "wb+", "w+b", NULL }, O_RDWR | O_CREAT | O_TRUNC | O_BINARY }, 2738fe6bbcaSLaszlo Ersek { (ccpc[]){ "a+", NULL }, O_RDWR | O_CREAT | O_APPEND }, 2748fe6bbcaSLaszlo Ersek { (ccpc[]){ "ab+", "a+b", NULL }, O_RDWR | O_CREAT | O_APPEND | O_BINARY } 275c689b4f1SLaszlo Ersek }; 276c689b4f1SLaszlo Ersek 277c689b4f1SLaszlo Ersek static int 278c689b4f1SLaszlo Ersek find_open_flag(const char *mode_str, Error **err) 279c689b4f1SLaszlo Ersek { 280c689b4f1SLaszlo Ersek unsigned mode; 281c689b4f1SLaszlo Ersek 282c689b4f1SLaszlo Ersek for (mode = 0; mode < ARRAY_SIZE(guest_file_open_modes); ++mode) { 283c689b4f1SLaszlo Ersek ccpc *form; 284c689b4f1SLaszlo Ersek 285c689b4f1SLaszlo Ersek form = guest_file_open_modes[mode].forms; 286c689b4f1SLaszlo Ersek while (*form != NULL && strcmp(*form, mode_str) != 0) { 287c689b4f1SLaszlo Ersek ++form; 288c689b4f1SLaszlo Ersek } 289c689b4f1SLaszlo Ersek if (*form != NULL) { 290c689b4f1SLaszlo Ersek break; 291c689b4f1SLaszlo Ersek } 292c689b4f1SLaszlo Ersek } 293c689b4f1SLaszlo Ersek 294c689b4f1SLaszlo Ersek if (mode == ARRAY_SIZE(guest_file_open_modes)) { 295c689b4f1SLaszlo Ersek error_setg(err, "invalid file open mode '%s'", mode_str); 296c689b4f1SLaszlo Ersek return -1; 297c689b4f1SLaszlo Ersek } 298c689b4f1SLaszlo Ersek return guest_file_open_modes[mode].oflag_base | O_NOCTTY | O_NONBLOCK; 299c689b4f1SLaszlo Ersek } 300c689b4f1SLaszlo Ersek 301c689b4f1SLaszlo Ersek #define DEFAULT_NEW_FILE_MODE (S_IRUSR | S_IWUSR | \ 302c689b4f1SLaszlo Ersek S_IRGRP | S_IWGRP | \ 303c689b4f1SLaszlo Ersek S_IROTH | S_IWOTH) 304c689b4f1SLaszlo Ersek 305c689b4f1SLaszlo Ersek static FILE * 306c689b4f1SLaszlo Ersek safe_open_or_create(const char *path, const char *mode, Error **err) 307c689b4f1SLaszlo Ersek { 308c689b4f1SLaszlo Ersek Error *local_err = NULL; 309c689b4f1SLaszlo Ersek int oflag; 310c689b4f1SLaszlo Ersek 311c689b4f1SLaszlo Ersek oflag = find_open_flag(mode, &local_err); 312c689b4f1SLaszlo Ersek if (local_err == NULL) { 313c689b4f1SLaszlo Ersek int fd; 314c689b4f1SLaszlo Ersek 315c689b4f1SLaszlo Ersek /* If the caller wants / allows creation of a new file, we implement it 316c689b4f1SLaszlo Ersek * with a two step process: open() + (open() / fchmod()). 317c689b4f1SLaszlo Ersek * 318c689b4f1SLaszlo Ersek * First we insist on creating the file exclusively as a new file. If 319c689b4f1SLaszlo Ersek * that succeeds, we're free to set any file-mode bits on it. (The 320c689b4f1SLaszlo Ersek * motivation is that we want to set those file-mode bits independently 321c689b4f1SLaszlo Ersek * of the current umask.) 322c689b4f1SLaszlo Ersek * 323c689b4f1SLaszlo Ersek * If the exclusive creation fails because the file already exists 324c689b4f1SLaszlo Ersek * (EEXIST is not possible for any other reason), we just attempt to 325c689b4f1SLaszlo Ersek * open the file, but in this case we won't be allowed to change the 326c689b4f1SLaszlo Ersek * file-mode bits on the preexistent file. 327c689b4f1SLaszlo Ersek * 328c689b4f1SLaszlo Ersek * The pathname should never disappear between the two open()s in 329c689b4f1SLaszlo Ersek * practice. If it happens, then someone very likely tried to race us. 330c689b4f1SLaszlo Ersek * In this case just go ahead and report the ENOENT from the second 331c689b4f1SLaszlo Ersek * open() to the caller. 332c689b4f1SLaszlo Ersek * 333c689b4f1SLaszlo Ersek * If the caller wants to open a preexistent file, then the first 334c689b4f1SLaszlo Ersek * open() is decisive and its third argument is ignored, and the second 335c689b4f1SLaszlo Ersek * open() and the fchmod() are never called. 336c689b4f1SLaszlo Ersek */ 337c689b4f1SLaszlo Ersek fd = open(path, oflag | ((oflag & O_CREAT) ? O_EXCL : 0), 0); 338c689b4f1SLaszlo Ersek if (fd == -1 && errno == EEXIST) { 339c689b4f1SLaszlo Ersek oflag &= ~(unsigned)O_CREAT; 340c689b4f1SLaszlo Ersek fd = open(path, oflag); 341c689b4f1SLaszlo Ersek } 342c689b4f1SLaszlo Ersek 343c689b4f1SLaszlo Ersek if (fd == -1) { 344c689b4f1SLaszlo Ersek error_setg_errno(&local_err, errno, "failed to open file '%s' " 345c689b4f1SLaszlo Ersek "(mode: '%s')", path, mode); 346c689b4f1SLaszlo Ersek } else { 347c689b4f1SLaszlo Ersek qemu_set_cloexec(fd); 348c689b4f1SLaszlo Ersek 349c689b4f1SLaszlo Ersek if ((oflag & O_CREAT) && fchmod(fd, DEFAULT_NEW_FILE_MODE) == -1) { 350c689b4f1SLaszlo Ersek error_setg_errno(&local_err, errno, "failed to set permission " 351c689b4f1SLaszlo Ersek "0%03o on new file '%s' (mode: '%s')", 352c689b4f1SLaszlo Ersek (unsigned)DEFAULT_NEW_FILE_MODE, path, mode); 353c689b4f1SLaszlo Ersek } else { 354c689b4f1SLaszlo Ersek FILE *f; 355c689b4f1SLaszlo Ersek 356c689b4f1SLaszlo Ersek f = fdopen(fd, mode); 357c689b4f1SLaszlo Ersek if (f == NULL) { 358c689b4f1SLaszlo Ersek error_setg_errno(&local_err, errno, "failed to associate " 359c689b4f1SLaszlo Ersek "stdio stream with file descriptor %d, " 360c689b4f1SLaszlo Ersek "file '%s' (mode: '%s')", fd, path, mode); 361c689b4f1SLaszlo Ersek } else { 362c689b4f1SLaszlo Ersek return f; 363c689b4f1SLaszlo Ersek } 364c689b4f1SLaszlo Ersek } 365c689b4f1SLaszlo Ersek 366c689b4f1SLaszlo Ersek close(fd); 3672b720018SLaszlo Ersek if (oflag & O_CREAT) { 3682b720018SLaszlo Ersek unlink(path); 3692b720018SLaszlo Ersek } 370c689b4f1SLaszlo Ersek } 371c689b4f1SLaszlo Ersek } 372c689b4f1SLaszlo Ersek 373c689b4f1SLaszlo Ersek error_propagate(err, local_err); 374c689b4f1SLaszlo Ersek return NULL; 375c689b4f1SLaszlo Ersek } 376c689b4f1SLaszlo Ersek 377c216e5adSMichael Roth int64_t qmp_guest_file_open(const char *path, bool has_mode, const char *mode, Error **err) 378c216e5adSMichael Roth { 379c216e5adSMichael Roth FILE *fh; 380c689b4f1SLaszlo Ersek Error *local_err = NULL; 381c216e5adSMichael Roth int fd; 38239097dafSMichael Roth int64_t ret = -1, handle; 383c216e5adSMichael Roth 384c216e5adSMichael Roth if (!has_mode) { 385c216e5adSMichael Roth mode = "r"; 386c216e5adSMichael Roth } 387c216e5adSMichael Roth slog("guest-file-open called, filepath: %s, mode: %s", path, mode); 388c689b4f1SLaszlo Ersek fh = safe_open_or_create(path, mode, &local_err); 389c689b4f1SLaszlo Ersek if (local_err != NULL) { 390c689b4f1SLaszlo Ersek error_propagate(err, local_err); 391c216e5adSMichael Roth return -1; 392c216e5adSMichael Roth } 393c216e5adSMichael Roth 394c216e5adSMichael Roth /* set fd non-blocking to avoid common use cases (like reading from a 395c216e5adSMichael Roth * named pipe) from hanging the agent 396c216e5adSMichael Roth */ 397c216e5adSMichael Roth fd = fileno(fh); 398c216e5adSMichael Roth ret = fcntl(fd, F_GETFL); 399c216e5adSMichael Roth ret = fcntl(fd, F_SETFL, ret | O_NONBLOCK); 400c216e5adSMichael Roth if (ret == -1) { 401db3edb66SLuiz Capitulino error_setg_errno(err, errno, "failed to make file '%s' non-blocking", 402db3edb66SLuiz Capitulino path); 403c216e5adSMichael Roth fclose(fh); 404c216e5adSMichael Roth return -1; 405c216e5adSMichael Roth } 406c216e5adSMichael Roth 40739097dafSMichael Roth handle = guest_file_handle_add(fh, err); 40839097dafSMichael Roth if (error_is_set(err)) { 40939097dafSMichael Roth fclose(fh); 41039097dafSMichael Roth return -1; 41139097dafSMichael Roth } 41239097dafSMichael Roth 413d607a523SStefan Weil slog("guest-file-open, handle: %" PRId64, handle); 41439097dafSMichael Roth return handle; 415c216e5adSMichael Roth } 416c216e5adSMichael Roth 417c216e5adSMichael Roth void qmp_guest_file_close(int64_t handle, Error **err) 418c216e5adSMichael Roth { 419a9de6d01SLuiz Capitulino GuestFileHandle *gfh = guest_file_handle_find(handle, err); 420c216e5adSMichael Roth int ret; 421c216e5adSMichael Roth 422d607a523SStefan Weil slog("guest-file-close called, handle: %" PRId64, handle); 423c216e5adSMichael Roth if (!gfh) { 424c216e5adSMichael Roth return; 425c216e5adSMichael Roth } 426c216e5adSMichael Roth 427c216e5adSMichael Roth ret = fclose(gfh->fh); 4283ac4b7c5SLuiz Capitulino if (ret == EOF) { 429db3edb66SLuiz Capitulino error_setg_errno(err, errno, "failed to close handle"); 430c216e5adSMichael Roth return; 431c216e5adSMichael Roth } 432c216e5adSMichael Roth 433c216e5adSMichael Roth QTAILQ_REMOVE(&guest_file_state.filehandles, gfh, next); 434c216e5adSMichael Roth g_free(gfh); 435c216e5adSMichael Roth } 436c216e5adSMichael Roth 437c216e5adSMichael Roth struct GuestFileRead *qmp_guest_file_read(int64_t handle, bool has_count, 438c216e5adSMichael Roth int64_t count, Error **err) 439c216e5adSMichael Roth { 440a9de6d01SLuiz Capitulino GuestFileHandle *gfh = guest_file_handle_find(handle, err); 441c216e5adSMichael Roth GuestFileRead *read_data = NULL; 442c216e5adSMichael Roth guchar *buf; 443c216e5adSMichael Roth FILE *fh; 444c216e5adSMichael Roth size_t read_count; 445c216e5adSMichael Roth 446c216e5adSMichael Roth if (!gfh) { 447c216e5adSMichael Roth return NULL; 448c216e5adSMichael Roth } 449c216e5adSMichael Roth 450c216e5adSMichael Roth if (!has_count) { 451c216e5adSMichael Roth count = QGA_READ_COUNT_DEFAULT; 452c216e5adSMichael Roth } else if (count < 0) { 453db3edb66SLuiz Capitulino error_setg(err, "value '%" PRId64 "' is invalid for argument count", 454db3edb66SLuiz Capitulino count); 455c216e5adSMichael Roth return NULL; 456c216e5adSMichael Roth } 457c216e5adSMichael Roth 458c216e5adSMichael Roth fh = gfh->fh; 459c216e5adSMichael Roth buf = g_malloc0(count+1); 460c216e5adSMichael Roth read_count = fread(buf, 1, count, fh); 461c216e5adSMichael Roth if (ferror(fh)) { 462db3edb66SLuiz Capitulino error_setg_errno(err, errno, "failed to read file"); 463d607a523SStefan Weil slog("guest-file-read failed, handle: %" PRId64, handle); 464c216e5adSMichael Roth } else { 465c216e5adSMichael Roth buf[read_count] = 0; 466c216e5adSMichael Roth read_data = g_malloc0(sizeof(GuestFileRead)); 467c216e5adSMichael Roth read_data->count = read_count; 468c216e5adSMichael Roth read_data->eof = feof(fh); 469c216e5adSMichael Roth if (read_count) { 470c216e5adSMichael Roth read_data->buf_b64 = g_base64_encode(buf, read_count); 471c216e5adSMichael Roth } 472c216e5adSMichael Roth } 473c216e5adSMichael Roth g_free(buf); 474c216e5adSMichael Roth clearerr(fh); 475c216e5adSMichael Roth 476c216e5adSMichael Roth return read_data; 477c216e5adSMichael Roth } 478c216e5adSMichael Roth 479c216e5adSMichael Roth GuestFileWrite *qmp_guest_file_write(int64_t handle, const char *buf_b64, 480c216e5adSMichael Roth bool has_count, int64_t count, Error **err) 481c216e5adSMichael Roth { 482c216e5adSMichael Roth GuestFileWrite *write_data = NULL; 483c216e5adSMichael Roth guchar *buf; 484c216e5adSMichael Roth gsize buf_len; 485c216e5adSMichael Roth int write_count; 486a9de6d01SLuiz Capitulino GuestFileHandle *gfh = guest_file_handle_find(handle, err); 487c216e5adSMichael Roth FILE *fh; 488c216e5adSMichael Roth 489c216e5adSMichael Roth if (!gfh) { 490c216e5adSMichael Roth return NULL; 491c216e5adSMichael Roth } 492c216e5adSMichael Roth 493c216e5adSMichael Roth fh = gfh->fh; 494c216e5adSMichael Roth buf = g_base64_decode(buf_b64, &buf_len); 495c216e5adSMichael Roth 496c216e5adSMichael Roth if (!has_count) { 497c216e5adSMichael Roth count = buf_len; 498c216e5adSMichael Roth } else if (count < 0 || count > buf_len) { 499db3edb66SLuiz Capitulino error_setg(err, "value '%" PRId64 "' is invalid for argument count", 500db3edb66SLuiz Capitulino count); 501c216e5adSMichael Roth g_free(buf); 502c216e5adSMichael Roth return NULL; 503c216e5adSMichael Roth } 504c216e5adSMichael Roth 505c216e5adSMichael Roth write_count = fwrite(buf, 1, count, fh); 506c216e5adSMichael Roth if (ferror(fh)) { 507db3edb66SLuiz Capitulino error_setg_errno(err, errno, "failed to write to file"); 508d607a523SStefan Weil slog("guest-file-write failed, handle: %" PRId64, handle); 509c216e5adSMichael Roth } else { 510c216e5adSMichael Roth write_data = g_malloc0(sizeof(GuestFileWrite)); 511c216e5adSMichael Roth write_data->count = write_count; 512c216e5adSMichael Roth write_data->eof = feof(fh); 513c216e5adSMichael Roth } 514c216e5adSMichael Roth g_free(buf); 515c216e5adSMichael Roth clearerr(fh); 516c216e5adSMichael Roth 517c216e5adSMichael Roth return write_data; 518c216e5adSMichael Roth } 519c216e5adSMichael Roth 520c216e5adSMichael Roth struct GuestFileSeek *qmp_guest_file_seek(int64_t handle, int64_t offset, 521c216e5adSMichael Roth int64_t whence, Error **err) 522c216e5adSMichael Roth { 523a9de6d01SLuiz Capitulino GuestFileHandle *gfh = guest_file_handle_find(handle, err); 524c216e5adSMichael Roth GuestFileSeek *seek_data = NULL; 525c216e5adSMichael Roth FILE *fh; 526c216e5adSMichael Roth int ret; 527c216e5adSMichael Roth 528c216e5adSMichael Roth if (!gfh) { 529c216e5adSMichael Roth return NULL; 530c216e5adSMichael Roth } 531c216e5adSMichael Roth 532c216e5adSMichael Roth fh = gfh->fh; 533c216e5adSMichael Roth ret = fseek(fh, offset, whence); 534c216e5adSMichael Roth if (ret == -1) { 535db3edb66SLuiz Capitulino error_setg_errno(err, errno, "failed to seek file"); 536c216e5adSMichael Roth } else { 53710b7c5ddSMarkus Armbruster seek_data = g_new0(GuestFileSeek, 1); 538c216e5adSMichael Roth seek_data->position = ftell(fh); 539c216e5adSMichael Roth seek_data->eof = feof(fh); 540c216e5adSMichael Roth } 541c216e5adSMichael Roth clearerr(fh); 542c216e5adSMichael Roth 543c216e5adSMichael Roth return seek_data; 544c216e5adSMichael Roth } 545c216e5adSMichael Roth 546c216e5adSMichael Roth void qmp_guest_file_flush(int64_t handle, Error **err) 547c216e5adSMichael Roth { 548a9de6d01SLuiz Capitulino GuestFileHandle *gfh = guest_file_handle_find(handle, err); 549c216e5adSMichael Roth FILE *fh; 550c216e5adSMichael Roth int ret; 551c216e5adSMichael Roth 552c216e5adSMichael Roth if (!gfh) { 553c216e5adSMichael Roth return; 554c216e5adSMichael Roth } 555c216e5adSMichael Roth 556c216e5adSMichael Roth fh = gfh->fh; 557c216e5adSMichael Roth ret = fflush(fh); 558c216e5adSMichael Roth if (ret == EOF) { 559db3edb66SLuiz Capitulino error_setg_errno(err, errno, "failed to flush file"); 560c216e5adSMichael Roth } 561c216e5adSMichael Roth } 562c216e5adSMichael Roth 563c216e5adSMichael Roth static void guest_file_init(void) 564c216e5adSMichael Roth { 565c216e5adSMichael Roth QTAILQ_INIT(&guest_file_state.filehandles); 566c216e5adSMichael Roth } 567c216e5adSMichael Roth 568e72c3f2eSMichael Roth /* linux-specific implementations. avoid this if at all possible. */ 569e72c3f2eSMichael Roth #if defined(__linux__) 570e72c3f2eSMichael Roth 571eab5fd59SPaolo Bonzini #if defined(CONFIG_FSFREEZE) || defined(CONFIG_FSTRIM) 572af02203fSPaolo Bonzini typedef struct FsMount { 573c216e5adSMichael Roth char *dirname; 574c216e5adSMichael Roth char *devtype; 575af02203fSPaolo Bonzini QTAILQ_ENTRY(FsMount) next; 576af02203fSPaolo Bonzini } FsMount; 577c216e5adSMichael Roth 578e5d9adbdSTomoki Sekiyama typedef QTAILQ_HEAD(FsMountList, FsMount) FsMountList; 5799e8aded4SMichael Roth 580af02203fSPaolo Bonzini static void free_fs_mount_list(FsMountList *mounts) 581c216e5adSMichael Roth { 582af02203fSPaolo Bonzini FsMount *mount, *temp; 583c216e5adSMichael Roth 5849e8aded4SMichael Roth if (!mounts) { 5859e8aded4SMichael Roth return; 5869e8aded4SMichael Roth } 5879e8aded4SMichael Roth 5889e8aded4SMichael Roth QTAILQ_FOREACH_SAFE(mount, mounts, next, temp) { 5899e8aded4SMichael Roth QTAILQ_REMOVE(mounts, mount, next); 590c216e5adSMichael Roth g_free(mount->dirname); 591c216e5adSMichael Roth g_free(mount->devtype); 592c216e5adSMichael Roth g_free(mount); 593c216e5adSMichael Roth } 5949e8aded4SMichael Roth } 5959e8aded4SMichael Roth 5969e8aded4SMichael Roth /* 5979e8aded4SMichael Roth * Walk the mount table and build a list of local file systems 5989e8aded4SMichael Roth */ 599261551d1SLuiz Capitulino static void build_fs_mount_list(FsMountList *mounts, Error **err) 6009e8aded4SMichael Roth { 6019e8aded4SMichael Roth struct mntent *ment; 602af02203fSPaolo Bonzini FsMount *mount; 6039e2fa418SMichael Roth char const *mtab = "/proc/self/mounts"; 6049e8aded4SMichael Roth FILE *fp; 605c216e5adSMichael Roth 606c216e5adSMichael Roth fp = setmntent(mtab, "r"); 607c216e5adSMichael Roth if (!fp) { 608261551d1SLuiz Capitulino error_setg(err, "failed to open mtab file: '%s'", mtab); 609261551d1SLuiz Capitulino return; 610c216e5adSMichael Roth } 611c216e5adSMichael Roth 612c216e5adSMichael Roth while ((ment = getmntent(fp))) { 613c216e5adSMichael Roth /* 614c216e5adSMichael Roth * An entry which device name doesn't start with a '/' is 615c216e5adSMichael Roth * either a dummy file system or a network file system. 616c216e5adSMichael Roth * Add special handling for smbfs and cifs as is done by 617c216e5adSMichael Roth * coreutils as well. 618c216e5adSMichael Roth */ 619c216e5adSMichael Roth if ((ment->mnt_fsname[0] != '/') || 620c216e5adSMichael Roth (strcmp(ment->mnt_type, "smbfs") == 0) || 621c216e5adSMichael Roth (strcmp(ment->mnt_type, "cifs") == 0)) { 622c216e5adSMichael Roth continue; 623c216e5adSMichael Roth } 624c216e5adSMichael Roth 625af02203fSPaolo Bonzini mount = g_malloc0(sizeof(FsMount)); 626c216e5adSMichael Roth mount->dirname = g_strdup(ment->mnt_dir); 627c216e5adSMichael Roth mount->devtype = g_strdup(ment->mnt_type); 628c216e5adSMichael Roth 6299e8aded4SMichael Roth QTAILQ_INSERT_TAIL(mounts, mount, next); 630c216e5adSMichael Roth } 631c216e5adSMichael Roth 632c216e5adSMichael Roth endmntent(fp); 633c216e5adSMichael Roth } 634eab5fd59SPaolo Bonzini #endif 635eab5fd59SPaolo Bonzini 636eab5fd59SPaolo Bonzini #if defined(CONFIG_FSFREEZE) 637c216e5adSMichael Roth 638ec0f694cSTomoki Sekiyama typedef enum { 639ec0f694cSTomoki Sekiyama FSFREEZE_HOOK_THAW = 0, 640ec0f694cSTomoki Sekiyama FSFREEZE_HOOK_FREEZE, 641ec0f694cSTomoki Sekiyama } FsfreezeHookArg; 642ec0f694cSTomoki Sekiyama 643ec0f694cSTomoki Sekiyama const char *fsfreeze_hook_arg_string[] = { 644ec0f694cSTomoki Sekiyama "thaw", 645ec0f694cSTomoki Sekiyama "freeze", 646ec0f694cSTomoki Sekiyama }; 647ec0f694cSTomoki Sekiyama 648ec0f694cSTomoki Sekiyama static void execute_fsfreeze_hook(FsfreezeHookArg arg, Error **err) 649ec0f694cSTomoki Sekiyama { 650ec0f694cSTomoki Sekiyama int status; 651ec0f694cSTomoki Sekiyama pid_t pid; 652ec0f694cSTomoki Sekiyama const char *hook; 653ec0f694cSTomoki Sekiyama const char *arg_str = fsfreeze_hook_arg_string[arg]; 654ec0f694cSTomoki Sekiyama Error *local_err = NULL; 655ec0f694cSTomoki Sekiyama 656ec0f694cSTomoki Sekiyama hook = ga_fsfreeze_hook(ga_state); 657ec0f694cSTomoki Sekiyama if (!hook) { 658ec0f694cSTomoki Sekiyama return; 659ec0f694cSTomoki Sekiyama } 660ec0f694cSTomoki Sekiyama if (access(hook, X_OK) != 0) { 661ec0f694cSTomoki Sekiyama error_setg_errno(err, errno, "can't access fsfreeze hook '%s'", hook); 662ec0f694cSTomoki Sekiyama return; 663ec0f694cSTomoki Sekiyama } 664ec0f694cSTomoki Sekiyama 665ec0f694cSTomoki Sekiyama slog("executing fsfreeze hook with arg '%s'", arg_str); 666ec0f694cSTomoki Sekiyama pid = fork(); 667ec0f694cSTomoki Sekiyama if (pid == 0) { 668ec0f694cSTomoki Sekiyama setsid(); 669ec0f694cSTomoki Sekiyama reopen_fd_to_null(0); 670ec0f694cSTomoki Sekiyama reopen_fd_to_null(1); 671ec0f694cSTomoki Sekiyama reopen_fd_to_null(2); 672ec0f694cSTomoki Sekiyama 673ec0f694cSTomoki Sekiyama execle(hook, hook, arg_str, NULL, environ); 674ec0f694cSTomoki Sekiyama _exit(EXIT_FAILURE); 675ec0f694cSTomoki Sekiyama } else if (pid < 0) { 676ec0f694cSTomoki Sekiyama error_setg_errno(err, errno, "failed to create child process"); 677ec0f694cSTomoki Sekiyama return; 678ec0f694cSTomoki Sekiyama } 679ec0f694cSTomoki Sekiyama 680ec0f694cSTomoki Sekiyama ga_wait_child(pid, &status, &local_err); 68184d18f06SMarkus Armbruster if (local_err) { 682ec0f694cSTomoki Sekiyama error_propagate(err, local_err); 683ec0f694cSTomoki Sekiyama return; 684ec0f694cSTomoki Sekiyama } 685ec0f694cSTomoki Sekiyama 686ec0f694cSTomoki Sekiyama if (!WIFEXITED(status)) { 687ec0f694cSTomoki Sekiyama error_setg(err, "fsfreeze hook has terminated abnormally"); 688ec0f694cSTomoki Sekiyama return; 689ec0f694cSTomoki Sekiyama } 690ec0f694cSTomoki Sekiyama 691ec0f694cSTomoki Sekiyama status = WEXITSTATUS(status); 692ec0f694cSTomoki Sekiyama if (status) { 693ec0f694cSTomoki Sekiyama error_setg(err, "fsfreeze hook has failed with status %d", status); 694ec0f694cSTomoki Sekiyama return; 695ec0f694cSTomoki Sekiyama } 696ec0f694cSTomoki Sekiyama } 697ec0f694cSTomoki Sekiyama 698c216e5adSMichael Roth /* 699c216e5adSMichael Roth * Return status of freeze/thaw 700c216e5adSMichael Roth */ 701c216e5adSMichael Roth GuestFsfreezeStatus qmp_guest_fsfreeze_status(Error **err) 702c216e5adSMichael Roth { 703f22d85e9SMichael Roth if (ga_is_frozen(ga_state)) { 704f22d85e9SMichael Roth return GUEST_FSFREEZE_STATUS_FROZEN; 705f22d85e9SMichael Roth } 706f22d85e9SMichael Roth 707f22d85e9SMichael Roth return GUEST_FSFREEZE_STATUS_THAWED; 708c216e5adSMichael Roth } 709c216e5adSMichael Roth 710c216e5adSMichael Roth /* 711c216e5adSMichael Roth * Walk list of mounted file systems in the guest, and freeze the ones which 712c216e5adSMichael Roth * are real local file systems. 713c216e5adSMichael Roth */ 714c216e5adSMichael Roth int64_t qmp_guest_fsfreeze_freeze(Error **err) 715c216e5adSMichael Roth { 716c216e5adSMichael Roth int ret = 0, i = 0; 717af02203fSPaolo Bonzini FsMountList mounts; 718af02203fSPaolo Bonzini struct FsMount *mount; 719261551d1SLuiz Capitulino Error *local_err = NULL; 720c216e5adSMichael Roth int fd; 721c216e5adSMichael Roth 722c216e5adSMichael Roth slog("guest-fsfreeze called"); 723c216e5adSMichael Roth 724ec0f694cSTomoki Sekiyama execute_fsfreeze_hook(FSFREEZE_HOOK_FREEZE, &local_err); 72584d18f06SMarkus Armbruster if (local_err) { 726ec0f694cSTomoki Sekiyama error_propagate(err, local_err); 727ec0f694cSTomoki Sekiyama return -1; 728ec0f694cSTomoki Sekiyama } 729ec0f694cSTomoki Sekiyama 7309e8aded4SMichael Roth QTAILQ_INIT(&mounts); 731261551d1SLuiz Capitulino build_fs_mount_list(&mounts, &local_err); 73284d18f06SMarkus Armbruster if (local_err) { 733261551d1SLuiz Capitulino error_propagate(err, local_err); 734261551d1SLuiz Capitulino return -1; 735c216e5adSMichael Roth } 736c216e5adSMichael Roth 737c216e5adSMichael Roth /* cannot risk guest agent blocking itself on a write in this state */ 738f22d85e9SMichael Roth ga_set_frozen(ga_state); 739c216e5adSMichael Roth 740e5d9adbdSTomoki Sekiyama QTAILQ_FOREACH_REVERSE(mount, &mounts, FsMountList, next) { 741c216e5adSMichael Roth fd = qemu_open(mount->dirname, O_RDONLY); 742c216e5adSMichael Roth if (fd == -1) { 743617fbbc1SLuiz Capitulino error_setg_errno(err, errno, "failed to open %s", mount->dirname); 744c216e5adSMichael Roth goto error; 745c216e5adSMichael Roth } 746c216e5adSMichael Roth 747c216e5adSMichael Roth /* we try to cull filesytems we know won't work in advance, but other 748c216e5adSMichael Roth * filesytems may not implement fsfreeze for less obvious reasons. 7499e8aded4SMichael Roth * these will report EOPNOTSUPP. we simply ignore these when tallying 7509e8aded4SMichael Roth * the number of frozen filesystems. 7519e8aded4SMichael Roth * 7529e8aded4SMichael Roth * any other error means a failure to freeze a filesystem we 7539e8aded4SMichael Roth * expect to be freezable, so return an error in those cases 7549e8aded4SMichael Roth * and return system to thawed state. 755c216e5adSMichael Roth */ 756c216e5adSMichael Roth ret = ioctl(fd, FIFREEZE); 7579e8aded4SMichael Roth if (ret == -1) { 7589e8aded4SMichael Roth if (errno != EOPNOTSUPP) { 759617fbbc1SLuiz Capitulino error_setg_errno(err, errno, "failed to freeze %s", 760617fbbc1SLuiz Capitulino mount->dirname); 761c216e5adSMichael Roth close(fd); 762c216e5adSMichael Roth goto error; 763c216e5adSMichael Roth } 7649e8aded4SMichael Roth } else { 765c216e5adSMichael Roth i++; 766c216e5adSMichael Roth } 7679e8aded4SMichael Roth close(fd); 7689e8aded4SMichael Roth } 769c216e5adSMichael Roth 770af02203fSPaolo Bonzini free_fs_mount_list(&mounts); 771c216e5adSMichael Roth return i; 772c216e5adSMichael Roth 773c216e5adSMichael Roth error: 774af02203fSPaolo Bonzini free_fs_mount_list(&mounts); 775c216e5adSMichael Roth qmp_guest_fsfreeze_thaw(NULL); 776c216e5adSMichael Roth return 0; 777c216e5adSMichael Roth } 778c216e5adSMichael Roth 779c216e5adSMichael Roth /* 780c216e5adSMichael Roth * Walk list of frozen file systems in the guest, and thaw them. 781c216e5adSMichael Roth */ 782c216e5adSMichael Roth int64_t qmp_guest_fsfreeze_thaw(Error **err) 783c216e5adSMichael Roth { 784c216e5adSMichael Roth int ret; 785af02203fSPaolo Bonzini FsMountList mounts; 786af02203fSPaolo Bonzini FsMount *mount; 7879e8aded4SMichael Roth int fd, i = 0, logged; 788261551d1SLuiz Capitulino Error *local_err = NULL; 789c216e5adSMichael Roth 7909e8aded4SMichael Roth QTAILQ_INIT(&mounts); 791261551d1SLuiz Capitulino build_fs_mount_list(&mounts, &local_err); 79284d18f06SMarkus Armbruster if (local_err) { 793261551d1SLuiz Capitulino error_propagate(err, local_err); 7949e8aded4SMichael Roth return 0; 7959e8aded4SMichael Roth } 7969e8aded4SMichael Roth 7979e8aded4SMichael Roth QTAILQ_FOREACH(mount, &mounts, next) { 7989e8aded4SMichael Roth logged = false; 799c216e5adSMichael Roth fd = qemu_open(mount->dirname, O_RDONLY); 800c216e5adSMichael Roth if (fd == -1) { 801c216e5adSMichael Roth continue; 802c216e5adSMichael Roth } 8039e8aded4SMichael Roth /* we have no way of knowing whether a filesystem was actually unfrozen 8049e8aded4SMichael Roth * as a result of a successful call to FITHAW, only that if an error 8059e8aded4SMichael Roth * was returned the filesystem was *not* unfrozen by that particular 8069e8aded4SMichael Roth * call. 8079e8aded4SMichael Roth * 808a31f0531SJim Meyering * since multiple preceding FIFREEZEs require multiple calls to FITHAW 8099e8aded4SMichael Roth * to unfreeze, continuing issuing FITHAW until an error is returned, 8109e8aded4SMichael Roth * in which case either the filesystem is in an unfreezable state, or, 8119e8aded4SMichael Roth * more likely, it was thawed previously (and remains so afterward). 8129e8aded4SMichael Roth * 8139e8aded4SMichael Roth * also, since the most recent successful call is the one that did 8149e8aded4SMichael Roth * the actual unfreeze, we can use this to provide an accurate count 8159e8aded4SMichael Roth * of the number of filesystems unfrozen by guest-fsfreeze-thaw, which 8169e8aded4SMichael Roth * may * be useful for determining whether a filesystem was unfrozen 8179e8aded4SMichael Roth * during the freeze/thaw phase by a process other than qemu-ga. 8189e8aded4SMichael Roth */ 8199e8aded4SMichael Roth do { 820c216e5adSMichael Roth ret = ioctl(fd, FITHAW); 8219e8aded4SMichael Roth if (ret == 0 && !logged) { 822c216e5adSMichael Roth i++; 8239e8aded4SMichael Roth logged = true; 8249e8aded4SMichael Roth } 8259e8aded4SMichael Roth } while (ret == 0); 8269e8aded4SMichael Roth close(fd); 827c216e5adSMichael Roth } 828c216e5adSMichael Roth 829f22d85e9SMichael Roth ga_unset_frozen(ga_state); 830af02203fSPaolo Bonzini free_fs_mount_list(&mounts); 831ec0f694cSTomoki Sekiyama 832ec0f694cSTomoki Sekiyama execute_fsfreeze_hook(FSFREEZE_HOOK_THAW, err); 833ec0f694cSTomoki Sekiyama 834c216e5adSMichael Roth return i; 835c216e5adSMichael Roth } 836c216e5adSMichael Roth 837c216e5adSMichael Roth static void guest_fsfreeze_cleanup(void) 838c216e5adSMichael Roth { 839c216e5adSMichael Roth Error *err = NULL; 840c216e5adSMichael Roth 841f22d85e9SMichael Roth if (ga_is_frozen(ga_state) == GUEST_FSFREEZE_STATUS_FROZEN) { 8426f686749SMarkus Armbruster qmp_guest_fsfreeze_thaw(&err); 8436f686749SMarkus Armbruster if (err) { 8446f686749SMarkus Armbruster slog("failed to clean up frozen filesystems: %s", 8456f686749SMarkus Armbruster error_get_pretty(err)); 8466f686749SMarkus Armbruster error_free(err); 847c216e5adSMichael Roth } 848c216e5adSMichael Roth } 849c216e5adSMichael Roth } 850e72c3f2eSMichael Roth #endif /* CONFIG_FSFREEZE */ 851c216e5adSMichael Roth 852eab5fd59SPaolo Bonzini #if defined(CONFIG_FSTRIM) 853eab5fd59SPaolo Bonzini /* 854eab5fd59SPaolo Bonzini * Walk list of mounted file systems in the guest, and trim them. 855eab5fd59SPaolo Bonzini */ 856eab5fd59SPaolo Bonzini void qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **err) 857eab5fd59SPaolo Bonzini { 858eab5fd59SPaolo Bonzini int ret = 0; 859eab5fd59SPaolo Bonzini FsMountList mounts; 860eab5fd59SPaolo Bonzini struct FsMount *mount; 861eab5fd59SPaolo Bonzini int fd; 862261551d1SLuiz Capitulino Error *local_err = NULL; 863eab5fd59SPaolo Bonzini struct fstrim_range r = { 864eab5fd59SPaolo Bonzini .start = 0, 865eab5fd59SPaolo Bonzini .len = -1, 866eab5fd59SPaolo Bonzini .minlen = has_minimum ? minimum : 0, 867eab5fd59SPaolo Bonzini }; 868eab5fd59SPaolo Bonzini 869eab5fd59SPaolo Bonzini slog("guest-fstrim called"); 870eab5fd59SPaolo Bonzini 871eab5fd59SPaolo Bonzini QTAILQ_INIT(&mounts); 872261551d1SLuiz Capitulino build_fs_mount_list(&mounts, &local_err); 87384d18f06SMarkus Armbruster if (local_err) { 874261551d1SLuiz Capitulino error_propagate(err, local_err); 875eab5fd59SPaolo Bonzini return; 876eab5fd59SPaolo Bonzini } 877eab5fd59SPaolo Bonzini 878eab5fd59SPaolo Bonzini QTAILQ_FOREACH(mount, &mounts, next) { 879eab5fd59SPaolo Bonzini fd = qemu_open(mount->dirname, O_RDONLY); 880eab5fd59SPaolo Bonzini if (fd == -1) { 881071673b0SLuiz Capitulino error_setg_errno(err, errno, "failed to open %s", mount->dirname); 882eab5fd59SPaolo Bonzini goto error; 883eab5fd59SPaolo Bonzini } 884eab5fd59SPaolo Bonzini 885eab5fd59SPaolo Bonzini /* We try to cull filesytems we know won't work in advance, but other 886eab5fd59SPaolo Bonzini * filesytems may not implement fstrim for less obvious reasons. These 887eab5fd59SPaolo Bonzini * will report EOPNOTSUPP; we simply ignore these errors. Any other 888eab5fd59SPaolo Bonzini * error means an unexpected error, so return it in those cases. In 889eab5fd59SPaolo Bonzini * some other cases ENOTTY will be reported (e.g. CD-ROMs). 890eab5fd59SPaolo Bonzini */ 891eab5fd59SPaolo Bonzini ret = ioctl(fd, FITRIM, &r); 892eab5fd59SPaolo Bonzini if (ret == -1) { 893eab5fd59SPaolo Bonzini if (errno != ENOTTY && errno != EOPNOTSUPP) { 894071673b0SLuiz Capitulino error_setg_errno(err, errno, "failed to trim %s", 895071673b0SLuiz Capitulino mount->dirname); 896eab5fd59SPaolo Bonzini close(fd); 897eab5fd59SPaolo Bonzini goto error; 898eab5fd59SPaolo Bonzini } 899eab5fd59SPaolo Bonzini } 900eab5fd59SPaolo Bonzini close(fd); 901eab5fd59SPaolo Bonzini } 902eab5fd59SPaolo Bonzini 903eab5fd59SPaolo Bonzini error: 904eab5fd59SPaolo Bonzini free_fs_mount_list(&mounts); 905eab5fd59SPaolo Bonzini } 906eab5fd59SPaolo Bonzini #endif /* CONFIG_FSTRIM */ 907eab5fd59SPaolo Bonzini 908eab5fd59SPaolo Bonzini 90911d0f125SLuiz Capitulino #define LINUX_SYS_STATE_FILE "/sys/power/state" 91011d0f125SLuiz Capitulino #define SUSPEND_SUPPORTED 0 91111d0f125SLuiz Capitulino #define SUSPEND_NOT_SUPPORTED 1 91211d0f125SLuiz Capitulino 91311d0f125SLuiz Capitulino static void bios_supports_mode(const char *pmutils_bin, const char *pmutils_arg, 91411d0f125SLuiz Capitulino const char *sysfile_str, Error **err) 91511d0f125SLuiz Capitulino { 9166b26e837SLuiz Capitulino Error *local_err = NULL; 91711d0f125SLuiz Capitulino char *pmutils_path; 9186b26e837SLuiz Capitulino pid_t pid; 919dc8764f0SLuiz Capitulino int status; 92011d0f125SLuiz Capitulino 92111d0f125SLuiz Capitulino pmutils_path = g_find_program_in_path(pmutils_bin); 92211d0f125SLuiz Capitulino 92311d0f125SLuiz Capitulino pid = fork(); 92411d0f125SLuiz Capitulino if (!pid) { 925dc8764f0SLuiz Capitulino char buf[32]; /* hopefully big enough */ 926dc8764f0SLuiz Capitulino ssize_t ret; 927dc8764f0SLuiz Capitulino int fd; 92811d0f125SLuiz Capitulino 92911d0f125SLuiz Capitulino setsid(); 93011d0f125SLuiz Capitulino reopen_fd_to_null(0); 93111d0f125SLuiz Capitulino reopen_fd_to_null(1); 93211d0f125SLuiz Capitulino reopen_fd_to_null(2); 93311d0f125SLuiz Capitulino 93411d0f125SLuiz Capitulino if (pmutils_path) { 93511d0f125SLuiz Capitulino execle(pmutils_path, pmutils_bin, pmutils_arg, NULL, environ); 93611d0f125SLuiz Capitulino } 93711d0f125SLuiz Capitulino 93811d0f125SLuiz Capitulino /* 93911d0f125SLuiz Capitulino * If we get here either pm-utils is not installed or execle() has 94011d0f125SLuiz Capitulino * failed. Let's try the manual method if the caller wants it. 94111d0f125SLuiz Capitulino */ 94211d0f125SLuiz Capitulino 94311d0f125SLuiz Capitulino if (!sysfile_str) { 94411d0f125SLuiz Capitulino _exit(SUSPEND_NOT_SUPPORTED); 94511d0f125SLuiz Capitulino } 94611d0f125SLuiz Capitulino 94711d0f125SLuiz Capitulino fd = open(LINUX_SYS_STATE_FILE, O_RDONLY); 94811d0f125SLuiz Capitulino if (fd < 0) { 94911d0f125SLuiz Capitulino _exit(SUSPEND_NOT_SUPPORTED); 95011d0f125SLuiz Capitulino } 95111d0f125SLuiz Capitulino 95211d0f125SLuiz Capitulino ret = read(fd, buf, sizeof(buf)-1); 95311d0f125SLuiz Capitulino if (ret <= 0) { 95411d0f125SLuiz Capitulino _exit(SUSPEND_NOT_SUPPORTED); 95511d0f125SLuiz Capitulino } 95611d0f125SLuiz Capitulino buf[ret] = '\0'; 95711d0f125SLuiz Capitulino 95811d0f125SLuiz Capitulino if (strstr(buf, sysfile_str)) { 95911d0f125SLuiz Capitulino _exit(SUSPEND_SUPPORTED); 96011d0f125SLuiz Capitulino } 96111d0f125SLuiz Capitulino 96211d0f125SLuiz Capitulino _exit(SUSPEND_NOT_SUPPORTED); 9636b26e837SLuiz Capitulino } else if (pid < 0) { 9646b26e837SLuiz Capitulino error_setg_errno(err, errno, "failed to create child process"); 9656b26e837SLuiz Capitulino goto out; 96611d0f125SLuiz Capitulino } 96711d0f125SLuiz Capitulino 9686b26e837SLuiz Capitulino ga_wait_child(pid, &status, &local_err); 96984d18f06SMarkus Armbruster if (local_err) { 9706b26e837SLuiz Capitulino error_propagate(err, local_err); 9716b26e837SLuiz Capitulino goto out; 97211d0f125SLuiz Capitulino } 97311d0f125SLuiz Capitulino 9746b26e837SLuiz Capitulino if (!WIFEXITED(status)) { 9756b26e837SLuiz Capitulino error_setg(err, "child process has terminated abnormally"); 9766b26e837SLuiz Capitulino goto out; 9776b26e837SLuiz Capitulino } 9786b26e837SLuiz Capitulino 979dc8764f0SLuiz Capitulino switch (WEXITSTATUS(status)) { 980dc8764f0SLuiz Capitulino case SUSPEND_SUPPORTED: 9816b26e837SLuiz Capitulino goto out; 982dc8764f0SLuiz Capitulino case SUSPEND_NOT_SUPPORTED: 9836b26e837SLuiz Capitulino error_setg(err, 9846b26e837SLuiz Capitulino "the requested suspend mode is not supported by the guest"); 9856b26e837SLuiz Capitulino goto out; 986dc8764f0SLuiz Capitulino default: 9876b26e837SLuiz Capitulino error_setg(err, 9886b26e837SLuiz Capitulino "the helper program '%s' returned an unexpected exit status" 9896b26e837SLuiz Capitulino " code (%d)", pmutils_path, WEXITSTATUS(status)); 9906b26e837SLuiz Capitulino goto out; 991dc8764f0SLuiz Capitulino } 99211d0f125SLuiz Capitulino 9936b26e837SLuiz Capitulino out: 9946b26e837SLuiz Capitulino g_free(pmutils_path); 99511d0f125SLuiz Capitulino } 99611d0f125SLuiz Capitulino 99711d0f125SLuiz Capitulino static void guest_suspend(const char *pmutils_bin, const char *sysfile_str, 99811d0f125SLuiz Capitulino Error **err) 99911d0f125SLuiz Capitulino { 10007b376087SLuiz Capitulino Error *local_err = NULL; 100111d0f125SLuiz Capitulino char *pmutils_path; 10027b376087SLuiz Capitulino pid_t pid; 1003dc8764f0SLuiz Capitulino int status; 100411d0f125SLuiz Capitulino 100511d0f125SLuiz Capitulino pmutils_path = g_find_program_in_path(pmutils_bin); 100611d0f125SLuiz Capitulino 100711d0f125SLuiz Capitulino pid = fork(); 100811d0f125SLuiz Capitulino if (pid == 0) { 100911d0f125SLuiz Capitulino /* child */ 101011d0f125SLuiz Capitulino int fd; 101111d0f125SLuiz Capitulino 101211d0f125SLuiz Capitulino setsid(); 101311d0f125SLuiz Capitulino reopen_fd_to_null(0); 101411d0f125SLuiz Capitulino reopen_fd_to_null(1); 101511d0f125SLuiz Capitulino reopen_fd_to_null(2); 101611d0f125SLuiz Capitulino 101711d0f125SLuiz Capitulino if (pmutils_path) { 101811d0f125SLuiz Capitulino execle(pmutils_path, pmutils_bin, NULL, environ); 101911d0f125SLuiz Capitulino } 102011d0f125SLuiz Capitulino 102111d0f125SLuiz Capitulino /* 102211d0f125SLuiz Capitulino * If we get here either pm-utils is not installed or execle() has 102311d0f125SLuiz Capitulino * failed. Let's try the manual method if the caller wants it. 102411d0f125SLuiz Capitulino */ 102511d0f125SLuiz Capitulino 102611d0f125SLuiz Capitulino if (!sysfile_str) { 102711d0f125SLuiz Capitulino _exit(EXIT_FAILURE); 102811d0f125SLuiz Capitulino } 102911d0f125SLuiz Capitulino 103011d0f125SLuiz Capitulino fd = open(LINUX_SYS_STATE_FILE, O_WRONLY); 103111d0f125SLuiz Capitulino if (fd < 0) { 103211d0f125SLuiz Capitulino _exit(EXIT_FAILURE); 103311d0f125SLuiz Capitulino } 103411d0f125SLuiz Capitulino 103511d0f125SLuiz Capitulino if (write(fd, sysfile_str, strlen(sysfile_str)) < 0) { 103611d0f125SLuiz Capitulino _exit(EXIT_FAILURE); 103711d0f125SLuiz Capitulino } 103811d0f125SLuiz Capitulino 103911d0f125SLuiz Capitulino _exit(EXIT_SUCCESS); 10407b376087SLuiz Capitulino } else if (pid < 0) { 10417b376087SLuiz Capitulino error_setg_errno(err, errno, "failed to create child process"); 10427b376087SLuiz Capitulino goto out; 104311d0f125SLuiz Capitulino } 104411d0f125SLuiz Capitulino 10457b376087SLuiz Capitulino ga_wait_child(pid, &status, &local_err); 104684d18f06SMarkus Armbruster if (local_err) { 10477b376087SLuiz Capitulino error_propagate(err, local_err); 10487b376087SLuiz Capitulino goto out; 10497b376087SLuiz Capitulino } 10507b376087SLuiz Capitulino 10517b376087SLuiz Capitulino if (!WIFEXITED(status)) { 10527b376087SLuiz Capitulino error_setg(err, "child process has terminated abnormally"); 10537b376087SLuiz Capitulino goto out; 10547b376087SLuiz Capitulino } 10557b376087SLuiz Capitulino 10567b376087SLuiz Capitulino if (WEXITSTATUS(status)) { 10577b376087SLuiz Capitulino error_setg(err, "child process has failed to suspend"); 10587b376087SLuiz Capitulino goto out; 10597b376087SLuiz Capitulino } 10607b376087SLuiz Capitulino 10617b376087SLuiz Capitulino out: 106211d0f125SLuiz Capitulino g_free(pmutils_path); 106311d0f125SLuiz Capitulino } 106411d0f125SLuiz Capitulino 106511d0f125SLuiz Capitulino void qmp_guest_suspend_disk(Error **err) 106611d0f125SLuiz Capitulino { 106711d0f125SLuiz Capitulino bios_supports_mode("pm-is-supported", "--hibernate", "disk", err); 106811d0f125SLuiz Capitulino if (error_is_set(err)) { 106911d0f125SLuiz Capitulino return; 107011d0f125SLuiz Capitulino } 107111d0f125SLuiz Capitulino 107211d0f125SLuiz Capitulino guest_suspend("pm-hibernate", "disk", err); 107311d0f125SLuiz Capitulino } 107411d0f125SLuiz Capitulino 1075fbf42210SLuiz Capitulino void qmp_guest_suspend_ram(Error **err) 1076fbf42210SLuiz Capitulino { 1077fbf42210SLuiz Capitulino bios_supports_mode("pm-is-supported", "--suspend", "mem", err); 1078fbf42210SLuiz Capitulino if (error_is_set(err)) { 1079fbf42210SLuiz Capitulino return; 1080fbf42210SLuiz Capitulino } 1081fbf42210SLuiz Capitulino 1082fbf42210SLuiz Capitulino guest_suspend("pm-suspend", "mem", err); 1083fbf42210SLuiz Capitulino } 1084fbf42210SLuiz Capitulino 108595f4f404SLuiz Capitulino void qmp_guest_suspend_hybrid(Error **err) 108695f4f404SLuiz Capitulino { 108795f4f404SLuiz Capitulino bios_supports_mode("pm-is-supported", "--suspend-hybrid", NULL, err); 108895f4f404SLuiz Capitulino if (error_is_set(err)) { 108995f4f404SLuiz Capitulino return; 109095f4f404SLuiz Capitulino } 109195f4f404SLuiz Capitulino 109295f4f404SLuiz Capitulino guest_suspend("pm-suspend-hybrid", NULL, err); 109395f4f404SLuiz Capitulino } 109495f4f404SLuiz Capitulino 10953424fc9fSMichal Privoznik static GuestNetworkInterfaceList * 10963424fc9fSMichal Privoznik guest_find_interface(GuestNetworkInterfaceList *head, 10973424fc9fSMichal Privoznik const char *name) 10983424fc9fSMichal Privoznik { 10993424fc9fSMichal Privoznik for (; head; head = head->next) { 11003424fc9fSMichal Privoznik if (strcmp(head->value->name, name) == 0) { 11013424fc9fSMichal Privoznik break; 11023424fc9fSMichal Privoznik } 11033424fc9fSMichal Privoznik } 11043424fc9fSMichal Privoznik 11053424fc9fSMichal Privoznik return head; 11063424fc9fSMichal Privoznik } 11073424fc9fSMichal Privoznik 11083424fc9fSMichal Privoznik /* 11093424fc9fSMichal Privoznik * Build information about guest interfaces 11103424fc9fSMichal Privoznik */ 11113424fc9fSMichal Privoznik GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp) 11123424fc9fSMichal Privoznik { 11133424fc9fSMichal Privoznik GuestNetworkInterfaceList *head = NULL, *cur_item = NULL; 11143424fc9fSMichal Privoznik struct ifaddrs *ifap, *ifa; 11153424fc9fSMichal Privoznik 11163424fc9fSMichal Privoznik if (getifaddrs(&ifap) < 0) { 1117878a0ae0SLuiz Capitulino error_setg_errno(errp, errno, "getifaddrs failed"); 11183424fc9fSMichal Privoznik goto error; 11193424fc9fSMichal Privoznik } 11203424fc9fSMichal Privoznik 11213424fc9fSMichal Privoznik for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 11223424fc9fSMichal Privoznik GuestNetworkInterfaceList *info; 11233424fc9fSMichal Privoznik GuestIpAddressList **address_list = NULL, *address_item = NULL; 11243424fc9fSMichal Privoznik char addr4[INET_ADDRSTRLEN]; 11253424fc9fSMichal Privoznik char addr6[INET6_ADDRSTRLEN]; 11263424fc9fSMichal Privoznik int sock; 11273424fc9fSMichal Privoznik struct ifreq ifr; 11283424fc9fSMichal Privoznik unsigned char *mac_addr; 11293424fc9fSMichal Privoznik void *p; 11303424fc9fSMichal Privoznik 11313424fc9fSMichal Privoznik g_debug("Processing %s interface", ifa->ifa_name); 11323424fc9fSMichal Privoznik 11333424fc9fSMichal Privoznik info = guest_find_interface(head, ifa->ifa_name); 11343424fc9fSMichal Privoznik 11353424fc9fSMichal Privoznik if (!info) { 11363424fc9fSMichal Privoznik info = g_malloc0(sizeof(*info)); 11373424fc9fSMichal Privoznik info->value = g_malloc0(sizeof(*info->value)); 11383424fc9fSMichal Privoznik info->value->name = g_strdup(ifa->ifa_name); 11393424fc9fSMichal Privoznik 11403424fc9fSMichal Privoznik if (!cur_item) { 11413424fc9fSMichal Privoznik head = cur_item = info; 11423424fc9fSMichal Privoznik } else { 11433424fc9fSMichal Privoznik cur_item->next = info; 11443424fc9fSMichal Privoznik cur_item = info; 11453424fc9fSMichal Privoznik } 11463424fc9fSMichal Privoznik } 11473424fc9fSMichal Privoznik 11483424fc9fSMichal Privoznik if (!info->value->has_hardware_address && 11493424fc9fSMichal Privoznik ifa->ifa_flags & SIOCGIFHWADDR) { 11503424fc9fSMichal Privoznik /* we haven't obtained HW address yet */ 11513424fc9fSMichal Privoznik sock = socket(PF_INET, SOCK_STREAM, 0); 11523424fc9fSMichal Privoznik if (sock == -1) { 1153878a0ae0SLuiz Capitulino error_setg_errno(errp, errno, "failed to create socket"); 11543424fc9fSMichal Privoznik goto error; 11553424fc9fSMichal Privoznik } 11563424fc9fSMichal Privoznik 11573424fc9fSMichal Privoznik memset(&ifr, 0, sizeof(ifr)); 11581ab516edSJim Meyering pstrcpy(ifr.ifr_name, IF_NAMESIZE, info->value->name); 11593424fc9fSMichal Privoznik if (ioctl(sock, SIOCGIFHWADDR, &ifr) == -1) { 1160878a0ae0SLuiz Capitulino error_setg_errno(errp, errno, 1161878a0ae0SLuiz Capitulino "failed to get MAC address of %s", 1162878a0ae0SLuiz Capitulino ifa->ifa_name); 116310a2158fSMarkus Armbruster close(sock); 11643424fc9fSMichal Privoznik goto error; 11653424fc9fSMichal Privoznik } 11663424fc9fSMichal Privoznik 116710a2158fSMarkus Armbruster close(sock); 11683424fc9fSMichal Privoznik mac_addr = (unsigned char *) &ifr.ifr_hwaddr.sa_data; 11693424fc9fSMichal Privoznik 1170e4ada482SStefan Weil info->value->hardware_address = 1171e4ada482SStefan Weil g_strdup_printf("%02x:%02x:%02x:%02x:%02x:%02x", 11723424fc9fSMichal Privoznik (int) mac_addr[0], (int) mac_addr[1], 11733424fc9fSMichal Privoznik (int) mac_addr[2], (int) mac_addr[3], 1174e4ada482SStefan Weil (int) mac_addr[4], (int) mac_addr[5]); 11753424fc9fSMichal Privoznik 11763424fc9fSMichal Privoznik info->value->has_hardware_address = true; 11773424fc9fSMichal Privoznik } 11783424fc9fSMichal Privoznik 11793424fc9fSMichal Privoznik if (ifa->ifa_addr && 11803424fc9fSMichal Privoznik ifa->ifa_addr->sa_family == AF_INET) { 11813424fc9fSMichal Privoznik /* interface with IPv4 address */ 11823424fc9fSMichal Privoznik p = &((struct sockaddr_in *)ifa->ifa_addr)->sin_addr; 11833424fc9fSMichal Privoznik if (!inet_ntop(AF_INET, p, addr4, sizeof(addr4))) { 1184878a0ae0SLuiz Capitulino error_setg_errno(errp, errno, "inet_ntop failed"); 11853424fc9fSMichal Privoznik goto error; 11863424fc9fSMichal Privoznik } 11873424fc9fSMichal Privoznik 118810a2158fSMarkus Armbruster address_item = g_malloc0(sizeof(*address_item)); 118910a2158fSMarkus Armbruster address_item->value = g_malloc0(sizeof(*address_item->value)); 11903424fc9fSMichal Privoznik address_item->value->ip_address = g_strdup(addr4); 11913424fc9fSMichal Privoznik address_item->value->ip_address_type = GUEST_IP_ADDRESS_TYPE_IPV4; 11923424fc9fSMichal Privoznik 11933424fc9fSMichal Privoznik if (ifa->ifa_netmask) { 11943424fc9fSMichal Privoznik /* Count the number of set bits in netmask. 11953424fc9fSMichal Privoznik * This is safe as '1' and '0' cannot be shuffled in netmask. */ 11963424fc9fSMichal Privoznik p = &((struct sockaddr_in *)ifa->ifa_netmask)->sin_addr; 11973424fc9fSMichal Privoznik address_item->value->prefix = ctpop32(((uint32_t *) p)[0]); 11983424fc9fSMichal Privoznik } 11993424fc9fSMichal Privoznik } else if (ifa->ifa_addr && 12003424fc9fSMichal Privoznik ifa->ifa_addr->sa_family == AF_INET6) { 12013424fc9fSMichal Privoznik /* interface with IPv6 address */ 12023424fc9fSMichal Privoznik p = &((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_addr; 12033424fc9fSMichal Privoznik if (!inet_ntop(AF_INET6, p, addr6, sizeof(addr6))) { 1204878a0ae0SLuiz Capitulino error_setg_errno(errp, errno, "inet_ntop failed"); 12053424fc9fSMichal Privoznik goto error; 12063424fc9fSMichal Privoznik } 12073424fc9fSMichal Privoznik 120810a2158fSMarkus Armbruster address_item = g_malloc0(sizeof(*address_item)); 120910a2158fSMarkus Armbruster address_item->value = g_malloc0(sizeof(*address_item->value)); 12103424fc9fSMichal Privoznik address_item->value->ip_address = g_strdup(addr6); 12113424fc9fSMichal Privoznik address_item->value->ip_address_type = GUEST_IP_ADDRESS_TYPE_IPV6; 12123424fc9fSMichal Privoznik 12133424fc9fSMichal Privoznik if (ifa->ifa_netmask) { 12143424fc9fSMichal Privoznik /* Count the number of set bits in netmask. 12153424fc9fSMichal Privoznik * This is safe as '1' and '0' cannot be shuffled in netmask. */ 12163424fc9fSMichal Privoznik p = &((struct sockaddr_in6 *)ifa->ifa_netmask)->sin6_addr; 12173424fc9fSMichal Privoznik address_item->value->prefix = 12183424fc9fSMichal Privoznik ctpop32(((uint32_t *) p)[0]) + 12193424fc9fSMichal Privoznik ctpop32(((uint32_t *) p)[1]) + 12203424fc9fSMichal Privoznik ctpop32(((uint32_t *) p)[2]) + 12213424fc9fSMichal Privoznik ctpop32(((uint32_t *) p)[3]); 12223424fc9fSMichal Privoznik } 12233424fc9fSMichal Privoznik } 12243424fc9fSMichal Privoznik 12253424fc9fSMichal Privoznik if (!address_item) { 12263424fc9fSMichal Privoznik continue; 12273424fc9fSMichal Privoznik } 12283424fc9fSMichal Privoznik 12293424fc9fSMichal Privoznik address_list = &info->value->ip_addresses; 12303424fc9fSMichal Privoznik 12313424fc9fSMichal Privoznik while (*address_list && (*address_list)->next) { 12323424fc9fSMichal Privoznik address_list = &(*address_list)->next; 12333424fc9fSMichal Privoznik } 12343424fc9fSMichal Privoznik 12353424fc9fSMichal Privoznik if (!*address_list) { 12363424fc9fSMichal Privoznik *address_list = address_item; 12373424fc9fSMichal Privoznik } else { 12383424fc9fSMichal Privoznik (*address_list)->next = address_item; 12393424fc9fSMichal Privoznik } 12403424fc9fSMichal Privoznik 12413424fc9fSMichal Privoznik info->value->has_ip_addresses = true; 12423424fc9fSMichal Privoznik 12433424fc9fSMichal Privoznik 12443424fc9fSMichal Privoznik } 12453424fc9fSMichal Privoznik 12463424fc9fSMichal Privoznik freeifaddrs(ifap); 12473424fc9fSMichal Privoznik return head; 12483424fc9fSMichal Privoznik 12493424fc9fSMichal Privoznik error: 12503424fc9fSMichal Privoznik freeifaddrs(ifap); 12513424fc9fSMichal Privoznik qapi_free_GuestNetworkInterfaceList(head); 12523424fc9fSMichal Privoznik return NULL; 12533424fc9fSMichal Privoznik } 12543424fc9fSMichal Privoznik 1255d2baff62SLaszlo Ersek #define SYSCONF_EXACT(name, err) sysconf_exact((name), #name, (err)) 1256d2baff62SLaszlo Ersek 1257d2baff62SLaszlo Ersek static long sysconf_exact(int name, const char *name_str, Error **err) 1258d2baff62SLaszlo Ersek { 1259d2baff62SLaszlo Ersek long ret; 1260d2baff62SLaszlo Ersek 1261d2baff62SLaszlo Ersek errno = 0; 1262d2baff62SLaszlo Ersek ret = sysconf(name); 1263d2baff62SLaszlo Ersek if (ret == -1) { 1264d2baff62SLaszlo Ersek if (errno == 0) { 1265d2baff62SLaszlo Ersek error_setg(err, "sysconf(%s): value indefinite", name_str); 1266d2baff62SLaszlo Ersek } else { 1267d2baff62SLaszlo Ersek error_setg_errno(err, errno, "sysconf(%s)", name_str); 1268d2baff62SLaszlo Ersek } 1269d2baff62SLaszlo Ersek } 1270d2baff62SLaszlo Ersek return ret; 1271d2baff62SLaszlo Ersek } 1272d2baff62SLaszlo Ersek 1273d2baff62SLaszlo Ersek /* Transfer online/offline status between @vcpu and the guest system. 1274d2baff62SLaszlo Ersek * 1275d2baff62SLaszlo Ersek * On input either @errp or *@errp must be NULL. 1276d2baff62SLaszlo Ersek * 1277d2baff62SLaszlo Ersek * In system-to-@vcpu direction, the following @vcpu fields are accessed: 1278d2baff62SLaszlo Ersek * - R: vcpu->logical_id 1279d2baff62SLaszlo Ersek * - W: vcpu->online 1280d2baff62SLaszlo Ersek * - W: vcpu->can_offline 1281d2baff62SLaszlo Ersek * 1282d2baff62SLaszlo Ersek * In @vcpu-to-system direction, the following @vcpu fields are accessed: 1283d2baff62SLaszlo Ersek * - R: vcpu->logical_id 1284d2baff62SLaszlo Ersek * - R: vcpu->online 1285d2baff62SLaszlo Ersek * 1286d2baff62SLaszlo Ersek * Written members remain unmodified on error. 1287d2baff62SLaszlo Ersek */ 1288d2baff62SLaszlo Ersek static void transfer_vcpu(GuestLogicalProcessor *vcpu, bool sys2vcpu, 1289d2baff62SLaszlo Ersek Error **errp) 1290d2baff62SLaszlo Ersek { 1291d2baff62SLaszlo Ersek char *dirpath; 1292d2baff62SLaszlo Ersek int dirfd; 1293d2baff62SLaszlo Ersek 1294d2baff62SLaszlo Ersek dirpath = g_strdup_printf("/sys/devices/system/cpu/cpu%" PRId64 "/", 1295d2baff62SLaszlo Ersek vcpu->logical_id); 1296d2baff62SLaszlo Ersek dirfd = open(dirpath, O_RDONLY | O_DIRECTORY); 1297d2baff62SLaszlo Ersek if (dirfd == -1) { 1298d2baff62SLaszlo Ersek error_setg_errno(errp, errno, "open(\"%s\")", dirpath); 1299d2baff62SLaszlo Ersek } else { 1300d2baff62SLaszlo Ersek static const char fn[] = "online"; 1301d2baff62SLaszlo Ersek int fd; 1302d2baff62SLaszlo Ersek int res; 1303d2baff62SLaszlo Ersek 1304d2baff62SLaszlo Ersek fd = openat(dirfd, fn, sys2vcpu ? O_RDONLY : O_RDWR); 1305d2baff62SLaszlo Ersek if (fd == -1) { 1306d2baff62SLaszlo Ersek if (errno != ENOENT) { 1307d2baff62SLaszlo Ersek error_setg_errno(errp, errno, "open(\"%s/%s\")", dirpath, fn); 1308d2baff62SLaszlo Ersek } else if (sys2vcpu) { 1309d2baff62SLaszlo Ersek vcpu->online = true; 1310d2baff62SLaszlo Ersek vcpu->can_offline = false; 1311d2baff62SLaszlo Ersek } else if (!vcpu->online) { 1312d2baff62SLaszlo Ersek error_setg(errp, "logical processor #%" PRId64 " can't be " 1313d2baff62SLaszlo Ersek "offlined", vcpu->logical_id); 1314d2baff62SLaszlo Ersek } /* otherwise pretend successful re-onlining */ 1315d2baff62SLaszlo Ersek } else { 1316d2baff62SLaszlo Ersek unsigned char status; 1317d2baff62SLaszlo Ersek 1318d2baff62SLaszlo Ersek res = pread(fd, &status, 1, 0); 1319d2baff62SLaszlo Ersek if (res == -1) { 1320d2baff62SLaszlo Ersek error_setg_errno(errp, errno, "pread(\"%s/%s\")", dirpath, fn); 1321d2baff62SLaszlo Ersek } else if (res == 0) { 1322d2baff62SLaszlo Ersek error_setg(errp, "pread(\"%s/%s\"): unexpected EOF", dirpath, 1323d2baff62SLaszlo Ersek fn); 1324d2baff62SLaszlo Ersek } else if (sys2vcpu) { 1325d2baff62SLaszlo Ersek vcpu->online = (status != '0'); 1326d2baff62SLaszlo Ersek vcpu->can_offline = true; 1327d2baff62SLaszlo Ersek } else if (vcpu->online != (status != '0')) { 1328d2baff62SLaszlo Ersek status = '0' + vcpu->online; 1329d2baff62SLaszlo Ersek if (pwrite(fd, &status, 1, 0) == -1) { 1330d2baff62SLaszlo Ersek error_setg_errno(errp, errno, "pwrite(\"%s/%s\")", dirpath, 1331d2baff62SLaszlo Ersek fn); 1332d2baff62SLaszlo Ersek } 1333d2baff62SLaszlo Ersek } /* otherwise pretend successful re-(on|off)-lining */ 1334d2baff62SLaszlo Ersek 1335d2baff62SLaszlo Ersek res = close(fd); 1336d2baff62SLaszlo Ersek g_assert(res == 0); 1337d2baff62SLaszlo Ersek } 1338d2baff62SLaszlo Ersek 1339d2baff62SLaszlo Ersek res = close(dirfd); 1340d2baff62SLaszlo Ersek g_assert(res == 0); 1341d2baff62SLaszlo Ersek } 1342d2baff62SLaszlo Ersek 1343d2baff62SLaszlo Ersek g_free(dirpath); 1344d2baff62SLaszlo Ersek } 1345d2baff62SLaszlo Ersek 1346d2baff62SLaszlo Ersek GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp) 1347d2baff62SLaszlo Ersek { 1348d2baff62SLaszlo Ersek int64_t current; 1349d2baff62SLaszlo Ersek GuestLogicalProcessorList *head, **link; 1350d2baff62SLaszlo Ersek long sc_max; 1351d2baff62SLaszlo Ersek Error *local_err = NULL; 1352d2baff62SLaszlo Ersek 1353d2baff62SLaszlo Ersek current = 0; 1354d2baff62SLaszlo Ersek head = NULL; 1355d2baff62SLaszlo Ersek link = &head; 1356d2baff62SLaszlo Ersek sc_max = SYSCONF_EXACT(_SC_NPROCESSORS_CONF, &local_err); 1357d2baff62SLaszlo Ersek 1358d2baff62SLaszlo Ersek while (local_err == NULL && current < sc_max) { 1359d2baff62SLaszlo Ersek GuestLogicalProcessor *vcpu; 1360d2baff62SLaszlo Ersek GuestLogicalProcessorList *entry; 1361d2baff62SLaszlo Ersek 1362d2baff62SLaszlo Ersek vcpu = g_malloc0(sizeof *vcpu); 1363d2baff62SLaszlo Ersek vcpu->logical_id = current++; 1364d2baff62SLaszlo Ersek vcpu->has_can_offline = true; /* lolspeak ftw */ 1365d2baff62SLaszlo Ersek transfer_vcpu(vcpu, true, &local_err); 1366d2baff62SLaszlo Ersek 1367d2baff62SLaszlo Ersek entry = g_malloc0(sizeof *entry); 1368d2baff62SLaszlo Ersek entry->value = vcpu; 1369d2baff62SLaszlo Ersek 1370d2baff62SLaszlo Ersek *link = entry; 1371d2baff62SLaszlo Ersek link = &entry->next; 1372d2baff62SLaszlo Ersek } 1373d2baff62SLaszlo Ersek 1374d2baff62SLaszlo Ersek if (local_err == NULL) { 1375d2baff62SLaszlo Ersek /* there's no guest with zero VCPUs */ 1376d2baff62SLaszlo Ersek g_assert(head != NULL); 1377d2baff62SLaszlo Ersek return head; 1378d2baff62SLaszlo Ersek } 1379d2baff62SLaszlo Ersek 1380d2baff62SLaszlo Ersek qapi_free_GuestLogicalProcessorList(head); 1381d2baff62SLaszlo Ersek error_propagate(errp, local_err); 1382d2baff62SLaszlo Ersek return NULL; 1383d2baff62SLaszlo Ersek } 1384d2baff62SLaszlo Ersek 1385cbb65fc2SLaszlo Ersek int64_t qmp_guest_set_vcpus(GuestLogicalProcessorList *vcpus, Error **errp) 1386cbb65fc2SLaszlo Ersek { 1387cbb65fc2SLaszlo Ersek int64_t processed; 1388cbb65fc2SLaszlo Ersek Error *local_err = NULL; 1389cbb65fc2SLaszlo Ersek 1390cbb65fc2SLaszlo Ersek processed = 0; 1391cbb65fc2SLaszlo Ersek while (vcpus != NULL) { 1392cbb65fc2SLaszlo Ersek transfer_vcpu(vcpus->value, false, &local_err); 1393cbb65fc2SLaszlo Ersek if (local_err != NULL) { 1394cbb65fc2SLaszlo Ersek break; 1395cbb65fc2SLaszlo Ersek } 1396cbb65fc2SLaszlo Ersek ++processed; 1397cbb65fc2SLaszlo Ersek vcpus = vcpus->next; 1398cbb65fc2SLaszlo Ersek } 1399cbb65fc2SLaszlo Ersek 1400cbb65fc2SLaszlo Ersek if (local_err != NULL) { 1401cbb65fc2SLaszlo Ersek if (processed == 0) { 1402cbb65fc2SLaszlo Ersek error_propagate(errp, local_err); 1403cbb65fc2SLaszlo Ersek } else { 1404cbb65fc2SLaszlo Ersek error_free(local_err); 1405cbb65fc2SLaszlo Ersek } 1406cbb65fc2SLaszlo Ersek } 1407cbb65fc2SLaszlo Ersek 1408cbb65fc2SLaszlo Ersek return processed; 1409cbb65fc2SLaszlo Ersek } 1410cbb65fc2SLaszlo Ersek 1411e72c3f2eSMichael Roth #else /* defined(__linux__) */ 1412e72c3f2eSMichael Roth 1413e72c3f2eSMichael Roth void qmp_guest_suspend_disk(Error **err) 1414e72c3f2eSMichael Roth { 1415e72c3f2eSMichael Roth error_set(err, QERR_UNSUPPORTED); 1416e72c3f2eSMichael Roth } 1417e72c3f2eSMichael Roth 1418e72c3f2eSMichael Roth void qmp_guest_suspend_ram(Error **err) 1419e72c3f2eSMichael Roth { 1420e72c3f2eSMichael Roth error_set(err, QERR_UNSUPPORTED); 1421e72c3f2eSMichael Roth } 1422e72c3f2eSMichael Roth 1423e72c3f2eSMichael Roth void qmp_guest_suspend_hybrid(Error **err) 1424e72c3f2eSMichael Roth { 1425e72c3f2eSMichael Roth error_set(err, QERR_UNSUPPORTED); 1426e72c3f2eSMichael Roth } 1427e72c3f2eSMichael Roth 1428e72c3f2eSMichael Roth GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp) 1429e72c3f2eSMichael Roth { 1430e72c3f2eSMichael Roth error_set(errp, QERR_UNSUPPORTED); 1431e72c3f2eSMichael Roth return NULL; 1432e72c3f2eSMichael Roth } 1433e72c3f2eSMichael Roth 1434d2baff62SLaszlo Ersek GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp) 1435d2baff62SLaszlo Ersek { 1436d2baff62SLaszlo Ersek error_set(errp, QERR_UNSUPPORTED); 1437d2baff62SLaszlo Ersek return NULL; 1438d2baff62SLaszlo Ersek } 1439d2baff62SLaszlo Ersek 1440cbb65fc2SLaszlo Ersek int64_t qmp_guest_set_vcpus(GuestLogicalProcessorList *vcpus, Error **errp) 1441cbb65fc2SLaszlo Ersek { 1442cbb65fc2SLaszlo Ersek error_set(errp, QERR_UNSUPPORTED); 1443cbb65fc2SLaszlo Ersek return -1; 1444cbb65fc2SLaszlo Ersek } 1445cbb65fc2SLaszlo Ersek 1446e72c3f2eSMichael Roth #endif 1447e72c3f2eSMichael Roth 1448d35d4cb5SMichael Roth #if !defined(CONFIG_FSFREEZE) 1449d35d4cb5SMichael Roth 1450d35d4cb5SMichael Roth GuestFsfreezeStatus qmp_guest_fsfreeze_status(Error **err) 1451d35d4cb5SMichael Roth { 1452d35d4cb5SMichael Roth error_set(err, QERR_UNSUPPORTED); 1453d35d4cb5SMichael Roth 1454d35d4cb5SMichael Roth return 0; 1455d35d4cb5SMichael Roth } 1456d35d4cb5SMichael Roth 1457d35d4cb5SMichael Roth int64_t qmp_guest_fsfreeze_freeze(Error **err) 1458d35d4cb5SMichael Roth { 1459d35d4cb5SMichael Roth error_set(err, QERR_UNSUPPORTED); 1460d35d4cb5SMichael Roth 1461d35d4cb5SMichael Roth return 0; 1462d35d4cb5SMichael Roth } 1463d35d4cb5SMichael Roth 1464d35d4cb5SMichael Roth int64_t qmp_guest_fsfreeze_thaw(Error **err) 1465d35d4cb5SMichael Roth { 1466d35d4cb5SMichael Roth error_set(err, QERR_UNSUPPORTED); 1467d35d4cb5SMichael Roth 1468d35d4cb5SMichael Roth return 0; 1469d35d4cb5SMichael Roth } 1470eab5fd59SPaolo Bonzini #endif /* CONFIG_FSFREEZE */ 1471d35d4cb5SMichael Roth 1472eab5fd59SPaolo Bonzini #if !defined(CONFIG_FSTRIM) 1473eab5fd59SPaolo Bonzini void qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **err) 1474eab5fd59SPaolo Bonzini { 1475eab5fd59SPaolo Bonzini error_set(err, QERR_UNSUPPORTED); 1476eab5fd59SPaolo Bonzini } 1477d35d4cb5SMichael Roth #endif 1478d35d4cb5SMichael Roth 1479c216e5adSMichael Roth /* register init/cleanup routines for stateful command groups */ 1480c216e5adSMichael Roth void ga_command_state_init(GAState *s, GACommandState *cs) 1481c216e5adSMichael Roth { 1482c216e5adSMichael Roth #if defined(CONFIG_FSFREEZE) 1483f22d85e9SMichael Roth ga_command_state_add(cs, NULL, guest_fsfreeze_cleanup); 1484c216e5adSMichael Roth #endif 1485c216e5adSMichael Roth ga_command_state_add(cs, guest_file_init, NULL); 1486c216e5adSMichael Roth } 1487