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" 32920639caSDaniel P. Berrange #include "qemu/base64.h" 33c216e5adSMichael Roth 342c02cbf6SLuiz Capitulino #ifndef CONFIG_HAS_ENVIRON 35eecae147SAndreas Färber #ifdef __APPLE__ 36eecae147SAndreas Färber #include <crt_externs.h> 37eecae147SAndreas Färber #define environ (*_NSGetEnviron()) 38eecae147SAndreas Färber #else 392c02cbf6SLuiz Capitulino extern char **environ; 402c02cbf6SLuiz Capitulino #endif 41eecae147SAndreas Färber #endif 422c02cbf6SLuiz Capitulino 43e72c3f2eSMichael Roth #if defined(__linux__) 44e72c3f2eSMichael Roth #include <mntent.h> 45e72c3f2eSMichael Roth #include <linux/fs.h> 46e72c3f2eSMichael Roth #include <ifaddrs.h> 47e72c3f2eSMichael Roth #include <arpa/inet.h> 48e72c3f2eSMichael Roth #include <sys/socket.h> 49e72c3f2eSMichael Roth #include <net/if.h> 50e72c3f2eSMichael Roth 51eab5fd59SPaolo Bonzini #ifdef FIFREEZE 52e72c3f2eSMichael Roth #define CONFIG_FSFREEZE 53e72c3f2eSMichael Roth #endif 54eab5fd59SPaolo Bonzini #ifdef FITRIM 55eab5fd59SPaolo Bonzini #define CONFIG_FSTRIM 56eab5fd59SPaolo Bonzini #endif 57e72c3f2eSMichael Roth #endif 58e72c3f2eSMichael Roth 5977dbc81bSMarkus Armbruster static void ga_wait_child(pid_t pid, int *status, Error **errp) 60d220a6dfSLuiz Capitulino { 61d220a6dfSLuiz Capitulino pid_t rpid; 62d220a6dfSLuiz Capitulino 63d220a6dfSLuiz Capitulino *status = 0; 64d220a6dfSLuiz Capitulino 65d220a6dfSLuiz Capitulino do { 66d220a6dfSLuiz Capitulino rpid = waitpid(pid, status, 0); 67d220a6dfSLuiz Capitulino } while (rpid == -1 && errno == EINTR); 68d220a6dfSLuiz Capitulino 69d220a6dfSLuiz Capitulino if (rpid == -1) { 7077dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to wait for child (pid: %d)", 7177dbc81bSMarkus Armbruster pid); 72d220a6dfSLuiz Capitulino return; 73d220a6dfSLuiz Capitulino } 74d220a6dfSLuiz Capitulino 75d220a6dfSLuiz Capitulino g_assert(rpid == pid); 76d220a6dfSLuiz Capitulino } 77d220a6dfSLuiz Capitulino 7877dbc81bSMarkus Armbruster void qmp_guest_shutdown(bool has_mode, const char *mode, Error **errp) 79c216e5adSMichael Roth { 80c216e5adSMichael Roth const char *shutdown_flag; 81d220a6dfSLuiz Capitulino Error *local_err = NULL; 82d220a6dfSLuiz Capitulino pid_t pid; 833674838cSLuiz Capitulino int status; 84c216e5adSMichael Roth 85c216e5adSMichael Roth slog("guest-shutdown called, mode: %s", mode); 86c216e5adSMichael Roth if (!has_mode || strcmp(mode, "powerdown") == 0) { 87c216e5adSMichael Roth shutdown_flag = "-P"; 88c216e5adSMichael Roth } else if (strcmp(mode, "halt") == 0) { 89c216e5adSMichael Roth shutdown_flag = "-H"; 90c216e5adSMichael Roth } else if (strcmp(mode, "reboot") == 0) { 91c216e5adSMichael Roth shutdown_flag = "-r"; 92c216e5adSMichael Roth } else { 9377dbc81bSMarkus Armbruster error_setg(errp, 94d220a6dfSLuiz Capitulino "mode is invalid (valid values are: halt|powerdown|reboot"); 95c216e5adSMichael Roth return; 96c216e5adSMichael Roth } 97c216e5adSMichael Roth 98d5dd3498SLuiz Capitulino pid = fork(); 99d5dd3498SLuiz Capitulino if (pid == 0) { 100c216e5adSMichael Roth /* child, start the shutdown */ 101c216e5adSMichael Roth setsid(); 1023674838cSLuiz Capitulino reopen_fd_to_null(0); 1033674838cSLuiz Capitulino reopen_fd_to_null(1); 1043674838cSLuiz Capitulino reopen_fd_to_null(2); 105c216e5adSMichael Roth 106485e741cSwhitearchey execle("/sbin/shutdown", "shutdown", "-h", shutdown_flag, "+0", 1073674838cSLuiz Capitulino "hypervisor initiated shutdown", (char*)NULL, environ); 1083674838cSLuiz Capitulino _exit(EXIT_FAILURE); 109d5dd3498SLuiz Capitulino } else if (pid < 0) { 11077dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to create child process"); 111d5dd3498SLuiz Capitulino return; 112d5dd3498SLuiz Capitulino } 113d5dd3498SLuiz Capitulino 114d220a6dfSLuiz Capitulino ga_wait_child(pid, &status, &local_err); 11584d18f06SMarkus Armbruster if (local_err) { 11677dbc81bSMarkus Armbruster error_propagate(errp, local_err); 117d220a6dfSLuiz Capitulino return; 118d220a6dfSLuiz Capitulino } 119d220a6dfSLuiz Capitulino 120d220a6dfSLuiz Capitulino if (!WIFEXITED(status)) { 12177dbc81bSMarkus Armbruster error_setg(errp, "child process has terminated abnormally"); 122d220a6dfSLuiz Capitulino return; 123d220a6dfSLuiz Capitulino } 124d220a6dfSLuiz Capitulino 125d220a6dfSLuiz Capitulino if (WEXITSTATUS(status)) { 12677dbc81bSMarkus Armbruster error_setg(errp, "child process has failed to shutdown"); 127d220a6dfSLuiz Capitulino return; 128d220a6dfSLuiz Capitulino } 129d220a6dfSLuiz Capitulino 130085d8134SPeter Maydell /* succeeded */ 131c216e5adSMichael Roth } 132c216e5adSMichael Roth 1336912e6a9SLei Li int64_t qmp_guest_get_time(Error **errp) 1346912e6a9SLei Li { 1356912e6a9SLei Li int ret; 1366912e6a9SLei Li qemu_timeval tq; 1376912e6a9SLei Li int64_t time_ns; 1386912e6a9SLei Li 1396912e6a9SLei Li ret = qemu_gettimeofday(&tq); 1406912e6a9SLei Li if (ret < 0) { 1416912e6a9SLei Li error_setg_errno(errp, errno, "Failed to get time"); 1426912e6a9SLei Li return -1; 1436912e6a9SLei Li } 1446912e6a9SLei Li 1456912e6a9SLei Li time_ns = tq.tv_sec * 1000000000LL + tq.tv_usec * 1000; 1466912e6a9SLei Li return time_ns; 1476912e6a9SLei Li } 1486912e6a9SLei Li 1492c958923SMichal Privoznik void qmp_guest_set_time(bool has_time, int64_t time_ns, Error **errp) 150a1bca57fSLei Li { 151a1bca57fSLei Li int ret; 152a1bca57fSLei Li int status; 153a1bca57fSLei Li pid_t pid; 154a1bca57fSLei Li Error *local_err = NULL; 155a1bca57fSLei Li struct timeval tv; 156a1bca57fSLei Li 1572c958923SMichal Privoznik /* If user has passed a time, validate and set it. */ 1582c958923SMichal Privoznik if (has_time) { 15900d2f370SMarc-André Lureau GDate date = { 0, }; 16000d2f370SMarc-André Lureau 161a1bca57fSLei Li /* year-2038 will overflow in case time_t is 32bit */ 162a1bca57fSLei Li if (time_ns / 1000000000 != (time_t)(time_ns / 1000000000)) { 163a1bca57fSLei Li error_setg(errp, "Time %" PRId64 " is too large", time_ns); 164a1bca57fSLei Li return; 165a1bca57fSLei Li } 166a1bca57fSLei Li 167a1bca57fSLei Li tv.tv_sec = time_ns / 1000000000; 168a1bca57fSLei Li tv.tv_usec = (time_ns % 1000000000) / 1000; 16900d2f370SMarc-André Lureau g_date_set_time_t(&date, tv.tv_sec); 17000d2f370SMarc-André Lureau if (date.year < 1970 || date.year >= 2070) { 17100d2f370SMarc-André Lureau error_setg_errno(errp, errno, "Invalid time"); 17200d2f370SMarc-André Lureau return; 17300d2f370SMarc-André Lureau } 174a1bca57fSLei Li 175a1bca57fSLei Li ret = settimeofday(&tv, NULL); 176a1bca57fSLei Li if (ret < 0) { 177a1bca57fSLei Li error_setg_errno(errp, errno, "Failed to set time to guest"); 178a1bca57fSLei Li return; 179a1bca57fSLei Li } 1802c958923SMichal Privoznik } 181a1bca57fSLei Li 1822c958923SMichal Privoznik /* Now, if user has passed a time to set and the system time is set, we 1832c958923SMichal Privoznik * just need to synchronize the hardware clock. However, if no time was 1842c958923SMichal Privoznik * passed, user is requesting the opposite: set the system time from the 1851634df56SAmos Kong * hardware clock (RTC). */ 186a1bca57fSLei Li pid = fork(); 187a1bca57fSLei Li if (pid == 0) { 188a1bca57fSLei Li setsid(); 189a1bca57fSLei Li reopen_fd_to_null(0); 190a1bca57fSLei Li reopen_fd_to_null(1); 191a1bca57fSLei Li reopen_fd_to_null(2); 192a1bca57fSLei Li 1932c958923SMichal Privoznik /* Use '/sbin/hwclock -w' to set RTC from the system time, 1942c958923SMichal Privoznik * or '/sbin/hwclock -s' to set the system time from RTC. */ 1952c958923SMichal Privoznik execle("/sbin/hwclock", "hwclock", has_time ? "-w" : "-s", 1962c958923SMichal Privoznik NULL, environ); 197a1bca57fSLei Li _exit(EXIT_FAILURE); 198a1bca57fSLei Li } else if (pid < 0) { 199a1bca57fSLei Li error_setg_errno(errp, errno, "failed to create child process"); 200a1bca57fSLei Li return; 201a1bca57fSLei Li } 202a1bca57fSLei Li 203a1bca57fSLei Li ga_wait_child(pid, &status, &local_err); 20484d18f06SMarkus Armbruster if (local_err) { 205a1bca57fSLei Li error_propagate(errp, local_err); 206a1bca57fSLei Li return; 207a1bca57fSLei Li } 208a1bca57fSLei Li 209a1bca57fSLei Li if (!WIFEXITED(status)) { 210a1bca57fSLei Li error_setg(errp, "child process has terminated abnormally"); 211a1bca57fSLei Li return; 212a1bca57fSLei Li } 213a1bca57fSLei Li 214a1bca57fSLei Li if (WEXITSTATUS(status)) { 215a1bca57fSLei Li error_setg(errp, "hwclock failed to set hardware clock to system time"); 216a1bca57fSLei Li return; 217a1bca57fSLei Li } 218a1bca57fSLei Li } 219a1bca57fSLei Li 220895b00f6SMarc-André Lureau typedef enum { 221895b00f6SMarc-André Lureau RW_STATE_NEW, 222895b00f6SMarc-André Lureau RW_STATE_READING, 223895b00f6SMarc-André Lureau RW_STATE_WRITING, 224895b00f6SMarc-André Lureau } RwState; 225895b00f6SMarc-André Lureau 226c216e5adSMichael Roth typedef struct GuestFileHandle { 227c216e5adSMichael Roth uint64_t id; 228c216e5adSMichael Roth FILE *fh; 229895b00f6SMarc-André Lureau RwState state; 230c216e5adSMichael Roth QTAILQ_ENTRY(GuestFileHandle) next; 231c216e5adSMichael Roth } GuestFileHandle; 232c216e5adSMichael Roth 233c216e5adSMichael Roth static struct { 234c216e5adSMichael Roth QTAILQ_HEAD(, GuestFileHandle) filehandles; 235b4fe97c8SDenis V. Lunev } guest_file_state = { 236b4fe97c8SDenis V. Lunev .filehandles = QTAILQ_HEAD_INITIALIZER(guest_file_state.filehandles), 237b4fe97c8SDenis V. Lunev }; 238c216e5adSMichael Roth 23939097dafSMichael Roth static int64_t guest_file_handle_add(FILE *fh, Error **errp) 240c216e5adSMichael Roth { 241c216e5adSMichael Roth GuestFileHandle *gfh; 24239097dafSMichael Roth int64_t handle; 24339097dafSMichael Roth 24439097dafSMichael Roth handle = ga_get_fd_handle(ga_state, errp); 245a903f40cSMarkus Armbruster if (handle < 0) { 246a903f40cSMarkus Armbruster return -1; 24739097dafSMichael Roth } 248c216e5adSMichael Roth 249f3a06403SMarkus Armbruster gfh = g_new0(GuestFileHandle, 1); 25039097dafSMichael Roth gfh->id = handle; 251c216e5adSMichael Roth gfh->fh = fh; 252c216e5adSMichael Roth QTAILQ_INSERT_TAIL(&guest_file_state.filehandles, gfh, next); 25339097dafSMichael Roth 25439097dafSMichael Roth return handle; 255c216e5adSMichael Roth } 256c216e5adSMichael Roth 25777dbc81bSMarkus Armbruster static GuestFileHandle *guest_file_handle_find(int64_t id, Error **errp) 258c216e5adSMichael Roth { 259c216e5adSMichael Roth GuestFileHandle *gfh; 260c216e5adSMichael Roth 261c216e5adSMichael Roth QTAILQ_FOREACH(gfh, &guest_file_state.filehandles, next) 262c216e5adSMichael Roth { 263c216e5adSMichael Roth if (gfh->id == id) { 264c216e5adSMichael Roth return gfh; 265c216e5adSMichael Roth } 266c216e5adSMichael Roth } 267c216e5adSMichael Roth 26877dbc81bSMarkus Armbruster error_setg(errp, "handle '%" PRId64 "' has not been found", id); 269c216e5adSMichael Roth return NULL; 270c216e5adSMichael Roth } 271c216e5adSMichael Roth 272c689b4f1SLaszlo Ersek typedef const char * const ccpc; 273c689b4f1SLaszlo Ersek 2748fe6bbcaSLaszlo Ersek #ifndef O_BINARY 2758fe6bbcaSLaszlo Ersek #define O_BINARY 0 2768fe6bbcaSLaszlo Ersek #endif 2778fe6bbcaSLaszlo Ersek 278c689b4f1SLaszlo Ersek /* http://pubs.opengroup.org/onlinepubs/9699919799/functions/fopen.html */ 279c689b4f1SLaszlo Ersek static const struct { 280c689b4f1SLaszlo Ersek ccpc *forms; 281c689b4f1SLaszlo Ersek int oflag_base; 282c689b4f1SLaszlo Ersek } guest_file_open_modes[] = { 2838fe6bbcaSLaszlo Ersek { (ccpc[]){ "r", NULL }, O_RDONLY }, 2848fe6bbcaSLaszlo Ersek { (ccpc[]){ "rb", NULL }, O_RDONLY | O_BINARY }, 2858fe6bbcaSLaszlo Ersek { (ccpc[]){ "w", NULL }, O_WRONLY | O_CREAT | O_TRUNC }, 2868fe6bbcaSLaszlo Ersek { (ccpc[]){ "wb", NULL }, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY }, 2878fe6bbcaSLaszlo Ersek { (ccpc[]){ "a", NULL }, O_WRONLY | O_CREAT | O_APPEND }, 2888fe6bbcaSLaszlo Ersek { (ccpc[]){ "ab", NULL }, O_WRONLY | O_CREAT | O_APPEND | O_BINARY }, 2898fe6bbcaSLaszlo Ersek { (ccpc[]){ "r+", NULL }, O_RDWR }, 2908fe6bbcaSLaszlo Ersek { (ccpc[]){ "rb+", "r+b", NULL }, O_RDWR | O_BINARY }, 2918fe6bbcaSLaszlo Ersek { (ccpc[]){ "w+", NULL }, O_RDWR | O_CREAT | O_TRUNC }, 2928fe6bbcaSLaszlo Ersek { (ccpc[]){ "wb+", "w+b", NULL }, O_RDWR | O_CREAT | O_TRUNC | O_BINARY }, 2938fe6bbcaSLaszlo Ersek { (ccpc[]){ "a+", NULL }, O_RDWR | O_CREAT | O_APPEND }, 2948fe6bbcaSLaszlo Ersek { (ccpc[]){ "ab+", "a+b", NULL }, O_RDWR | O_CREAT | O_APPEND | O_BINARY } 295c689b4f1SLaszlo Ersek }; 296c689b4f1SLaszlo Ersek 297c689b4f1SLaszlo Ersek static int 29877dbc81bSMarkus Armbruster find_open_flag(const char *mode_str, Error **errp) 299c689b4f1SLaszlo Ersek { 300c689b4f1SLaszlo Ersek unsigned mode; 301c689b4f1SLaszlo Ersek 302c689b4f1SLaszlo Ersek for (mode = 0; mode < ARRAY_SIZE(guest_file_open_modes); ++mode) { 303c689b4f1SLaszlo Ersek ccpc *form; 304c689b4f1SLaszlo Ersek 305c689b4f1SLaszlo Ersek form = guest_file_open_modes[mode].forms; 306c689b4f1SLaszlo Ersek while (*form != NULL && strcmp(*form, mode_str) != 0) { 307c689b4f1SLaszlo Ersek ++form; 308c689b4f1SLaszlo Ersek } 309c689b4f1SLaszlo Ersek if (*form != NULL) { 310c689b4f1SLaszlo Ersek break; 311c689b4f1SLaszlo Ersek } 312c689b4f1SLaszlo Ersek } 313c689b4f1SLaszlo Ersek 314c689b4f1SLaszlo Ersek if (mode == ARRAY_SIZE(guest_file_open_modes)) { 31577dbc81bSMarkus Armbruster error_setg(errp, "invalid file open mode '%s'", mode_str); 316c689b4f1SLaszlo Ersek return -1; 317c689b4f1SLaszlo Ersek } 318c689b4f1SLaszlo Ersek return guest_file_open_modes[mode].oflag_base | O_NOCTTY | O_NONBLOCK; 319c689b4f1SLaszlo Ersek } 320c689b4f1SLaszlo Ersek 321c689b4f1SLaszlo Ersek #define DEFAULT_NEW_FILE_MODE (S_IRUSR | S_IWUSR | \ 322c689b4f1SLaszlo Ersek S_IRGRP | S_IWGRP | \ 323c689b4f1SLaszlo Ersek S_IROTH | S_IWOTH) 324c689b4f1SLaszlo Ersek 325c689b4f1SLaszlo Ersek static FILE * 32677dbc81bSMarkus Armbruster safe_open_or_create(const char *path, const char *mode, Error **errp) 327c689b4f1SLaszlo Ersek { 328c689b4f1SLaszlo Ersek Error *local_err = NULL; 329c689b4f1SLaszlo Ersek int oflag; 330c689b4f1SLaszlo Ersek 331c689b4f1SLaszlo Ersek oflag = find_open_flag(mode, &local_err); 332c689b4f1SLaszlo Ersek if (local_err == NULL) { 333c689b4f1SLaszlo Ersek int fd; 334c689b4f1SLaszlo Ersek 335c689b4f1SLaszlo Ersek /* If the caller wants / allows creation of a new file, we implement it 336c689b4f1SLaszlo Ersek * with a two step process: open() + (open() / fchmod()). 337c689b4f1SLaszlo Ersek * 338c689b4f1SLaszlo Ersek * First we insist on creating the file exclusively as a new file. If 339c689b4f1SLaszlo Ersek * that succeeds, we're free to set any file-mode bits on it. (The 340c689b4f1SLaszlo Ersek * motivation is that we want to set those file-mode bits independently 341c689b4f1SLaszlo Ersek * of the current umask.) 342c689b4f1SLaszlo Ersek * 343c689b4f1SLaszlo Ersek * If the exclusive creation fails because the file already exists 344c689b4f1SLaszlo Ersek * (EEXIST is not possible for any other reason), we just attempt to 345c689b4f1SLaszlo Ersek * open the file, but in this case we won't be allowed to change the 346c689b4f1SLaszlo Ersek * file-mode bits on the preexistent file. 347c689b4f1SLaszlo Ersek * 348c689b4f1SLaszlo Ersek * The pathname should never disappear between the two open()s in 349c689b4f1SLaszlo Ersek * practice. If it happens, then someone very likely tried to race us. 350c689b4f1SLaszlo Ersek * In this case just go ahead and report the ENOENT from the second 351c689b4f1SLaszlo Ersek * open() to the caller. 352c689b4f1SLaszlo Ersek * 353c689b4f1SLaszlo Ersek * If the caller wants to open a preexistent file, then the first 354c689b4f1SLaszlo Ersek * open() is decisive and its third argument is ignored, and the second 355c689b4f1SLaszlo Ersek * open() and the fchmod() are never called. 356c689b4f1SLaszlo Ersek */ 357c689b4f1SLaszlo Ersek fd = open(path, oflag | ((oflag & O_CREAT) ? O_EXCL : 0), 0); 358c689b4f1SLaszlo Ersek if (fd == -1 && errno == EEXIST) { 359c689b4f1SLaszlo Ersek oflag &= ~(unsigned)O_CREAT; 360c689b4f1SLaszlo Ersek fd = open(path, oflag); 361c689b4f1SLaszlo Ersek } 362c689b4f1SLaszlo Ersek 363c689b4f1SLaszlo Ersek if (fd == -1) { 364c689b4f1SLaszlo Ersek error_setg_errno(&local_err, errno, "failed to open file '%s' " 365c689b4f1SLaszlo Ersek "(mode: '%s')", path, mode); 366c689b4f1SLaszlo Ersek } else { 367c689b4f1SLaszlo Ersek qemu_set_cloexec(fd); 368c689b4f1SLaszlo Ersek 369c689b4f1SLaszlo Ersek if ((oflag & O_CREAT) && fchmod(fd, DEFAULT_NEW_FILE_MODE) == -1) { 370c689b4f1SLaszlo Ersek error_setg_errno(&local_err, errno, "failed to set permission " 371c689b4f1SLaszlo Ersek "0%03o on new file '%s' (mode: '%s')", 372c689b4f1SLaszlo Ersek (unsigned)DEFAULT_NEW_FILE_MODE, path, mode); 373c689b4f1SLaszlo Ersek } else { 374c689b4f1SLaszlo Ersek FILE *f; 375c689b4f1SLaszlo Ersek 376c689b4f1SLaszlo Ersek f = fdopen(fd, mode); 377c689b4f1SLaszlo Ersek if (f == NULL) { 378c689b4f1SLaszlo Ersek error_setg_errno(&local_err, errno, "failed to associate " 379c689b4f1SLaszlo Ersek "stdio stream with file descriptor %d, " 380c689b4f1SLaszlo Ersek "file '%s' (mode: '%s')", fd, path, mode); 381c689b4f1SLaszlo Ersek } else { 382c689b4f1SLaszlo Ersek return f; 383c689b4f1SLaszlo Ersek } 384c689b4f1SLaszlo Ersek } 385c689b4f1SLaszlo Ersek 386c689b4f1SLaszlo Ersek close(fd); 3872b720018SLaszlo Ersek if (oflag & O_CREAT) { 3882b720018SLaszlo Ersek unlink(path); 3892b720018SLaszlo Ersek } 390c689b4f1SLaszlo Ersek } 391c689b4f1SLaszlo Ersek } 392c689b4f1SLaszlo Ersek 39377dbc81bSMarkus Armbruster error_propagate(errp, local_err); 394c689b4f1SLaszlo Ersek return NULL; 395c689b4f1SLaszlo Ersek } 396c689b4f1SLaszlo Ersek 39777dbc81bSMarkus Armbruster int64_t qmp_guest_file_open(const char *path, bool has_mode, const char *mode, 39877dbc81bSMarkus Armbruster Error **errp) 399c216e5adSMichael Roth { 400c216e5adSMichael Roth FILE *fh; 401c689b4f1SLaszlo Ersek Error *local_err = NULL; 40285b6f6f5SSimon Zolin int64_t handle; 403c216e5adSMichael Roth 404c216e5adSMichael Roth if (!has_mode) { 405c216e5adSMichael Roth mode = "r"; 406c216e5adSMichael Roth } 407c216e5adSMichael Roth slog("guest-file-open called, filepath: %s, mode: %s", path, mode); 408c689b4f1SLaszlo Ersek fh = safe_open_or_create(path, mode, &local_err); 409c689b4f1SLaszlo Ersek if (local_err != NULL) { 41077dbc81bSMarkus Armbruster error_propagate(errp, local_err); 411c216e5adSMichael Roth return -1; 412c216e5adSMichael Roth } 413c216e5adSMichael Roth 414c216e5adSMichael Roth /* set fd non-blocking to avoid common use cases (like reading from a 415c216e5adSMichael Roth * named pipe) from hanging the agent 416c216e5adSMichael Roth */ 41712505396SDenis V. Lunev qemu_set_nonblock(fileno(fh)); 418c216e5adSMichael Roth 41977dbc81bSMarkus Armbruster handle = guest_file_handle_add(fh, errp); 420a903f40cSMarkus Armbruster if (handle < 0) { 42139097dafSMichael Roth fclose(fh); 42239097dafSMichael Roth return -1; 42339097dafSMichael Roth } 42439097dafSMichael Roth 425d607a523SStefan Weil slog("guest-file-open, handle: %" PRId64, handle); 42639097dafSMichael Roth return handle; 427c216e5adSMichael Roth } 428c216e5adSMichael Roth 42977dbc81bSMarkus Armbruster void qmp_guest_file_close(int64_t handle, Error **errp) 430c216e5adSMichael Roth { 43177dbc81bSMarkus Armbruster GuestFileHandle *gfh = guest_file_handle_find(handle, errp); 432c216e5adSMichael Roth int ret; 433c216e5adSMichael Roth 434d607a523SStefan Weil slog("guest-file-close called, handle: %" PRId64, handle); 435c216e5adSMichael Roth if (!gfh) { 436c216e5adSMichael Roth return; 437c216e5adSMichael Roth } 438c216e5adSMichael Roth 439c216e5adSMichael Roth ret = fclose(gfh->fh); 4403ac4b7c5SLuiz Capitulino if (ret == EOF) { 44177dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to close handle"); 442c216e5adSMichael Roth return; 443c216e5adSMichael Roth } 444c216e5adSMichael Roth 445c216e5adSMichael Roth QTAILQ_REMOVE(&guest_file_state.filehandles, gfh, next); 446c216e5adSMichael Roth g_free(gfh); 447c216e5adSMichael Roth } 448c216e5adSMichael Roth 449c216e5adSMichael Roth struct GuestFileRead *qmp_guest_file_read(int64_t handle, bool has_count, 45077dbc81bSMarkus Armbruster int64_t count, Error **errp) 451c216e5adSMichael Roth { 45277dbc81bSMarkus Armbruster GuestFileHandle *gfh = guest_file_handle_find(handle, errp); 453c216e5adSMichael Roth GuestFileRead *read_data = NULL; 454c216e5adSMichael Roth guchar *buf; 455c216e5adSMichael Roth FILE *fh; 456c216e5adSMichael Roth size_t read_count; 457c216e5adSMichael Roth 458c216e5adSMichael Roth if (!gfh) { 459c216e5adSMichael Roth return NULL; 460c216e5adSMichael Roth } 461c216e5adSMichael Roth 462c216e5adSMichael Roth if (!has_count) { 463c216e5adSMichael Roth count = QGA_READ_COUNT_DEFAULT; 464c216e5adSMichael Roth } else if (count < 0) { 46577dbc81bSMarkus Armbruster error_setg(errp, "value '%" PRId64 "' is invalid for argument count", 466db3edb66SLuiz Capitulino count); 467c216e5adSMichael Roth return NULL; 468c216e5adSMichael Roth } 469c216e5adSMichael Roth 470c216e5adSMichael Roth fh = gfh->fh; 471895b00f6SMarc-André Lureau 472895b00f6SMarc-André Lureau /* explicitly flush when switching from writing to reading */ 473895b00f6SMarc-André Lureau if (gfh->state == RW_STATE_WRITING) { 474895b00f6SMarc-André Lureau int ret = fflush(fh); 475895b00f6SMarc-André Lureau if (ret == EOF) { 476895b00f6SMarc-André Lureau error_setg_errno(errp, errno, "failed to flush file"); 477895b00f6SMarc-André Lureau return NULL; 478895b00f6SMarc-André Lureau } 479895b00f6SMarc-André Lureau gfh->state = RW_STATE_NEW; 480895b00f6SMarc-André Lureau } 481895b00f6SMarc-André Lureau 482c216e5adSMichael Roth buf = g_malloc0(count+1); 483c216e5adSMichael Roth read_count = fread(buf, 1, count, fh); 484c216e5adSMichael Roth if (ferror(fh)) { 48577dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to read file"); 486d607a523SStefan Weil slog("guest-file-read failed, handle: %" PRId64, handle); 487c216e5adSMichael Roth } else { 488c216e5adSMichael Roth buf[read_count] = 0; 489f3a06403SMarkus Armbruster read_data = g_new0(GuestFileRead, 1); 490c216e5adSMichael Roth read_data->count = read_count; 491c216e5adSMichael Roth read_data->eof = feof(fh); 492c216e5adSMichael Roth if (read_count) { 493c216e5adSMichael Roth read_data->buf_b64 = g_base64_encode(buf, read_count); 494c216e5adSMichael Roth } 495895b00f6SMarc-André Lureau gfh->state = RW_STATE_READING; 496c216e5adSMichael Roth } 497c216e5adSMichael Roth g_free(buf); 498c216e5adSMichael Roth clearerr(fh); 499c216e5adSMichael Roth 500c216e5adSMichael Roth return read_data; 501c216e5adSMichael Roth } 502c216e5adSMichael Roth 503c216e5adSMichael Roth GuestFileWrite *qmp_guest_file_write(int64_t handle, const char *buf_b64, 50477dbc81bSMarkus Armbruster bool has_count, int64_t count, 50577dbc81bSMarkus Armbruster Error **errp) 506c216e5adSMichael Roth { 507c216e5adSMichael Roth GuestFileWrite *write_data = NULL; 508c216e5adSMichael Roth guchar *buf; 509c216e5adSMichael Roth gsize buf_len; 510c216e5adSMichael Roth int write_count; 51177dbc81bSMarkus Armbruster GuestFileHandle *gfh = guest_file_handle_find(handle, errp); 512c216e5adSMichael Roth FILE *fh; 513c216e5adSMichael Roth 514c216e5adSMichael Roth if (!gfh) { 515c216e5adSMichael Roth return NULL; 516c216e5adSMichael Roth } 517c216e5adSMichael Roth 518c216e5adSMichael Roth fh = gfh->fh; 519895b00f6SMarc-André Lureau 520895b00f6SMarc-André Lureau if (gfh->state == RW_STATE_READING) { 521895b00f6SMarc-André Lureau int ret = fseek(fh, 0, SEEK_CUR); 522895b00f6SMarc-André Lureau if (ret == -1) { 523895b00f6SMarc-André Lureau error_setg_errno(errp, errno, "failed to seek file"); 524895b00f6SMarc-André Lureau return NULL; 525895b00f6SMarc-André Lureau } 526895b00f6SMarc-André Lureau gfh->state = RW_STATE_NEW; 527895b00f6SMarc-André Lureau } 528895b00f6SMarc-André Lureau 529920639caSDaniel P. Berrange buf = qbase64_decode(buf_b64, -1, &buf_len, errp); 530920639caSDaniel P. Berrange if (!buf) { 531920639caSDaniel P. Berrange return NULL; 532920639caSDaniel P. Berrange } 533c216e5adSMichael Roth 534c216e5adSMichael Roth if (!has_count) { 535c216e5adSMichael Roth count = buf_len; 536c216e5adSMichael Roth } else if (count < 0 || count > buf_len) { 53777dbc81bSMarkus Armbruster error_setg(errp, "value '%" PRId64 "' is invalid for argument count", 538db3edb66SLuiz Capitulino count); 539c216e5adSMichael Roth g_free(buf); 540c216e5adSMichael Roth return NULL; 541c216e5adSMichael Roth } 542c216e5adSMichael Roth 543c216e5adSMichael Roth write_count = fwrite(buf, 1, count, fh); 544c216e5adSMichael Roth if (ferror(fh)) { 54577dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to write to file"); 546d607a523SStefan Weil slog("guest-file-write failed, handle: %" PRId64, handle); 547c216e5adSMichael Roth } else { 548f3a06403SMarkus Armbruster write_data = g_new0(GuestFileWrite, 1); 549c216e5adSMichael Roth write_data->count = write_count; 550c216e5adSMichael Roth write_data->eof = feof(fh); 551895b00f6SMarc-André Lureau gfh->state = RW_STATE_WRITING; 552c216e5adSMichael Roth } 553c216e5adSMichael Roth g_free(buf); 554c216e5adSMichael Roth clearerr(fh); 555c216e5adSMichael Roth 556c216e5adSMichael Roth return write_data; 557c216e5adSMichael Roth } 558c216e5adSMichael Roth 559c216e5adSMichael Roth struct GuestFileSeek *qmp_guest_file_seek(int64_t handle, int64_t offset, 5600a982b1bSEric Blake int64_t whence_code, Error **errp) 561c216e5adSMichael Roth { 56277dbc81bSMarkus Armbruster GuestFileHandle *gfh = guest_file_handle_find(handle, errp); 563c216e5adSMichael Roth GuestFileSeek *seek_data = NULL; 564c216e5adSMichael Roth FILE *fh; 565c216e5adSMichael Roth int ret; 5660a982b1bSEric Blake int whence; 567c216e5adSMichael Roth 568c216e5adSMichael Roth if (!gfh) { 569c216e5adSMichael Roth return NULL; 570c216e5adSMichael Roth } 571c216e5adSMichael Roth 5720a982b1bSEric Blake /* We stupidly exposed 'whence':'int' in our qapi */ 5730a982b1bSEric Blake switch (whence_code) { 5740a982b1bSEric Blake case QGA_SEEK_SET: 5750a982b1bSEric Blake whence = SEEK_SET; 5760a982b1bSEric Blake break; 5770a982b1bSEric Blake case QGA_SEEK_CUR: 5780a982b1bSEric Blake whence = SEEK_CUR; 5790a982b1bSEric Blake break; 5800a982b1bSEric Blake case QGA_SEEK_END: 5810a982b1bSEric Blake whence = SEEK_END; 5820a982b1bSEric Blake break; 5830a982b1bSEric Blake default: 5840a982b1bSEric Blake error_setg(errp, "invalid whence code %"PRId64, whence_code); 5850a982b1bSEric Blake return NULL; 5860a982b1bSEric Blake } 5870a982b1bSEric Blake 588c216e5adSMichael Roth fh = gfh->fh; 589c216e5adSMichael Roth ret = fseek(fh, offset, whence); 590c216e5adSMichael Roth if (ret == -1) { 59177dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to seek file"); 592895b00f6SMarc-André Lureau if (errno == ESPIPE) { 593895b00f6SMarc-André Lureau /* file is non-seekable, stdio shouldn't be buffering anyways */ 594895b00f6SMarc-André Lureau gfh->state = RW_STATE_NEW; 595895b00f6SMarc-André Lureau } 596c216e5adSMichael Roth } else { 59710b7c5ddSMarkus Armbruster seek_data = g_new0(GuestFileSeek, 1); 598c216e5adSMichael Roth seek_data->position = ftell(fh); 599c216e5adSMichael Roth seek_data->eof = feof(fh); 600895b00f6SMarc-André Lureau gfh->state = RW_STATE_NEW; 601c216e5adSMichael Roth } 602c216e5adSMichael Roth clearerr(fh); 603c216e5adSMichael Roth 604c216e5adSMichael Roth return seek_data; 605c216e5adSMichael Roth } 606c216e5adSMichael Roth 60777dbc81bSMarkus Armbruster void qmp_guest_file_flush(int64_t handle, Error **errp) 608c216e5adSMichael Roth { 60977dbc81bSMarkus Armbruster GuestFileHandle *gfh = guest_file_handle_find(handle, errp); 610c216e5adSMichael Roth FILE *fh; 611c216e5adSMichael Roth int ret; 612c216e5adSMichael Roth 613c216e5adSMichael Roth if (!gfh) { 614c216e5adSMichael Roth return; 615c216e5adSMichael Roth } 616c216e5adSMichael Roth 617c216e5adSMichael Roth fh = gfh->fh; 618c216e5adSMichael Roth ret = fflush(fh); 619c216e5adSMichael Roth if (ret == EOF) { 62077dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to flush file"); 621895b00f6SMarc-André Lureau } else { 622895b00f6SMarc-André Lureau gfh->state = RW_STATE_NEW; 623c216e5adSMichael Roth } 624c216e5adSMichael Roth } 625c216e5adSMichael Roth 626e72c3f2eSMichael Roth /* linux-specific implementations. avoid this if at all possible. */ 627e72c3f2eSMichael Roth #if defined(__linux__) 628e72c3f2eSMichael Roth 629eab5fd59SPaolo Bonzini #if defined(CONFIG_FSFREEZE) || defined(CONFIG_FSTRIM) 630af02203fSPaolo Bonzini typedef struct FsMount { 631c216e5adSMichael Roth char *dirname; 632c216e5adSMichael Roth char *devtype; 63346d4c572STomoki Sekiyama unsigned int devmajor, devminor; 634af02203fSPaolo Bonzini QTAILQ_ENTRY(FsMount) next; 635af02203fSPaolo Bonzini } FsMount; 636c216e5adSMichael Roth 637e5d9adbdSTomoki Sekiyama typedef QTAILQ_HEAD(FsMountList, FsMount) FsMountList; 6389e8aded4SMichael Roth 639af02203fSPaolo Bonzini static void free_fs_mount_list(FsMountList *mounts) 640c216e5adSMichael Roth { 641af02203fSPaolo Bonzini FsMount *mount, *temp; 642c216e5adSMichael Roth 6439e8aded4SMichael Roth if (!mounts) { 6449e8aded4SMichael Roth return; 6459e8aded4SMichael Roth } 6469e8aded4SMichael Roth 6479e8aded4SMichael Roth QTAILQ_FOREACH_SAFE(mount, mounts, next, temp) { 6489e8aded4SMichael Roth QTAILQ_REMOVE(mounts, mount, next); 649c216e5adSMichael Roth g_free(mount->dirname); 650c216e5adSMichael Roth g_free(mount->devtype); 651c216e5adSMichael Roth g_free(mount); 652c216e5adSMichael Roth } 6539e8aded4SMichael Roth } 6549e8aded4SMichael Roth 65546d4c572STomoki Sekiyama static int dev_major_minor(const char *devpath, 65646d4c572STomoki Sekiyama unsigned int *devmajor, unsigned int *devminor) 65746d4c572STomoki Sekiyama { 65846d4c572STomoki Sekiyama struct stat st; 65946d4c572STomoki Sekiyama 66046d4c572STomoki Sekiyama *devmajor = 0; 66146d4c572STomoki Sekiyama *devminor = 0; 66246d4c572STomoki Sekiyama 66346d4c572STomoki Sekiyama if (stat(devpath, &st) < 0) { 66446d4c572STomoki Sekiyama slog("failed to stat device file '%s': %s", devpath, strerror(errno)); 66546d4c572STomoki Sekiyama return -1; 66646d4c572STomoki Sekiyama } 66746d4c572STomoki Sekiyama if (S_ISDIR(st.st_mode)) { 66846d4c572STomoki Sekiyama /* It is bind mount */ 66946d4c572STomoki Sekiyama return -2; 67046d4c572STomoki Sekiyama } 67146d4c572STomoki Sekiyama if (S_ISBLK(st.st_mode)) { 67246d4c572STomoki Sekiyama *devmajor = major(st.st_rdev); 67346d4c572STomoki Sekiyama *devminor = minor(st.st_rdev); 67446d4c572STomoki Sekiyama return 0; 67546d4c572STomoki Sekiyama } 67646d4c572STomoki Sekiyama return -1; 67746d4c572STomoki Sekiyama } 67846d4c572STomoki Sekiyama 6799e8aded4SMichael Roth /* 6809e8aded4SMichael Roth * Walk the mount table and build a list of local file systems 6819e8aded4SMichael Roth */ 68246d4c572STomoki Sekiyama static void build_fs_mount_list_from_mtab(FsMountList *mounts, Error **errp) 6839e8aded4SMichael Roth { 6849e8aded4SMichael Roth struct mntent *ment; 685af02203fSPaolo Bonzini FsMount *mount; 6869e2fa418SMichael Roth char const *mtab = "/proc/self/mounts"; 6879e8aded4SMichael Roth FILE *fp; 68846d4c572STomoki Sekiyama unsigned int devmajor, devminor; 689c216e5adSMichael Roth 690c216e5adSMichael Roth fp = setmntent(mtab, "r"); 691c216e5adSMichael Roth if (!fp) { 69277dbc81bSMarkus Armbruster error_setg(errp, "failed to open mtab file: '%s'", mtab); 693261551d1SLuiz Capitulino return; 694c216e5adSMichael Roth } 695c216e5adSMichael Roth 696c216e5adSMichael Roth while ((ment = getmntent(fp))) { 697c216e5adSMichael Roth /* 698c216e5adSMichael Roth * An entry which device name doesn't start with a '/' is 699c216e5adSMichael Roth * either a dummy file system or a network file system. 700c216e5adSMichael Roth * Add special handling for smbfs and cifs as is done by 701c216e5adSMichael Roth * coreutils as well. 702c216e5adSMichael Roth */ 703c216e5adSMichael Roth if ((ment->mnt_fsname[0] != '/') || 704c216e5adSMichael Roth (strcmp(ment->mnt_type, "smbfs") == 0) || 705c216e5adSMichael Roth (strcmp(ment->mnt_type, "cifs") == 0)) { 706c216e5adSMichael Roth continue; 707c216e5adSMichael Roth } 70846d4c572STomoki Sekiyama if (dev_major_minor(ment->mnt_fsname, &devmajor, &devminor) == -2) { 70946d4c572STomoki Sekiyama /* Skip bind mounts */ 71046d4c572STomoki Sekiyama continue; 71146d4c572STomoki Sekiyama } 712c216e5adSMichael Roth 713f3a06403SMarkus Armbruster mount = g_new0(FsMount, 1); 714c216e5adSMichael Roth mount->dirname = g_strdup(ment->mnt_dir); 715c216e5adSMichael Roth mount->devtype = g_strdup(ment->mnt_type); 71646d4c572STomoki Sekiyama mount->devmajor = devmajor; 71746d4c572STomoki Sekiyama mount->devminor = devminor; 718c216e5adSMichael Roth 7199e8aded4SMichael Roth QTAILQ_INSERT_TAIL(mounts, mount, next); 720c216e5adSMichael Roth } 721c216e5adSMichael Roth 722c216e5adSMichael Roth endmntent(fp); 723c216e5adSMichael Roth } 72446d4c572STomoki Sekiyama 72546d4c572STomoki Sekiyama static void decode_mntname(char *name, int len) 72646d4c572STomoki Sekiyama { 72746d4c572STomoki Sekiyama int i, j = 0; 72846d4c572STomoki Sekiyama for (i = 0; i <= len; i++) { 72946d4c572STomoki Sekiyama if (name[i] != '\\') { 73046d4c572STomoki Sekiyama name[j++] = name[i]; 73146d4c572STomoki Sekiyama } else if (name[i + 1] == '\\') { 73246d4c572STomoki Sekiyama name[j++] = '\\'; 73346d4c572STomoki Sekiyama i++; 73446d4c572STomoki Sekiyama } else if (name[i + 1] >= '0' && name[i + 1] <= '3' && 73546d4c572STomoki Sekiyama name[i + 2] >= '0' && name[i + 2] <= '7' && 73646d4c572STomoki Sekiyama name[i + 3] >= '0' && name[i + 3] <= '7') { 73746d4c572STomoki Sekiyama name[j++] = (name[i + 1] - '0') * 64 + 73846d4c572STomoki Sekiyama (name[i + 2] - '0') * 8 + 73946d4c572STomoki Sekiyama (name[i + 3] - '0'); 74046d4c572STomoki Sekiyama i += 3; 74146d4c572STomoki Sekiyama } else { 74246d4c572STomoki Sekiyama name[j++] = name[i]; 74346d4c572STomoki Sekiyama } 74446d4c572STomoki Sekiyama } 74546d4c572STomoki Sekiyama } 74646d4c572STomoki Sekiyama 74746d4c572STomoki Sekiyama static void build_fs_mount_list(FsMountList *mounts, Error **errp) 74846d4c572STomoki Sekiyama { 74946d4c572STomoki Sekiyama FsMount *mount; 75046d4c572STomoki Sekiyama char const *mountinfo = "/proc/self/mountinfo"; 75146d4c572STomoki Sekiyama FILE *fp; 75246d4c572STomoki Sekiyama char *line = NULL, *dash; 75346d4c572STomoki Sekiyama size_t n; 75446d4c572STomoki Sekiyama char check; 75546d4c572STomoki Sekiyama unsigned int devmajor, devminor; 75646d4c572STomoki Sekiyama int ret, dir_s, dir_e, type_s, type_e, dev_s, dev_e; 75746d4c572STomoki Sekiyama 75846d4c572STomoki Sekiyama fp = fopen(mountinfo, "r"); 75946d4c572STomoki Sekiyama if (!fp) { 76046d4c572STomoki Sekiyama build_fs_mount_list_from_mtab(mounts, errp); 76146d4c572STomoki Sekiyama return; 76246d4c572STomoki Sekiyama } 76346d4c572STomoki Sekiyama 76446d4c572STomoki Sekiyama while (getline(&line, &n, fp) != -1) { 76546d4c572STomoki Sekiyama ret = sscanf(line, "%*u %*u %u:%u %*s %n%*s%n%c", 76646d4c572STomoki Sekiyama &devmajor, &devminor, &dir_s, &dir_e, &check); 76746d4c572STomoki Sekiyama if (ret < 3) { 76846d4c572STomoki Sekiyama continue; 76946d4c572STomoki Sekiyama } 77046d4c572STomoki Sekiyama dash = strstr(line + dir_e, " - "); 77146d4c572STomoki Sekiyama if (!dash) { 77246d4c572STomoki Sekiyama continue; 77346d4c572STomoki Sekiyama } 77446d4c572STomoki Sekiyama ret = sscanf(dash, " - %n%*s%n %n%*s%n%c", 77546d4c572STomoki Sekiyama &type_s, &type_e, &dev_s, &dev_e, &check); 77646d4c572STomoki Sekiyama if (ret < 1) { 77746d4c572STomoki Sekiyama continue; 77846d4c572STomoki Sekiyama } 77946d4c572STomoki Sekiyama line[dir_e] = 0; 78046d4c572STomoki Sekiyama dash[type_e] = 0; 78146d4c572STomoki Sekiyama dash[dev_e] = 0; 78246d4c572STomoki Sekiyama decode_mntname(line + dir_s, dir_e - dir_s); 78346d4c572STomoki Sekiyama decode_mntname(dash + dev_s, dev_e - dev_s); 78446d4c572STomoki Sekiyama if (devmajor == 0) { 78546d4c572STomoki Sekiyama /* btrfs reports major number = 0 */ 78646d4c572STomoki Sekiyama if (strcmp("btrfs", dash + type_s) != 0 || 78746d4c572STomoki Sekiyama dev_major_minor(dash + dev_s, &devmajor, &devminor) < 0) { 78846d4c572STomoki Sekiyama continue; 78946d4c572STomoki Sekiyama } 79046d4c572STomoki Sekiyama } 79146d4c572STomoki Sekiyama 792f3a06403SMarkus Armbruster mount = g_new0(FsMount, 1); 79346d4c572STomoki Sekiyama mount->dirname = g_strdup(line + dir_s); 79446d4c572STomoki Sekiyama mount->devtype = g_strdup(dash + type_s); 79546d4c572STomoki Sekiyama mount->devmajor = devmajor; 79646d4c572STomoki Sekiyama mount->devminor = devminor; 79746d4c572STomoki Sekiyama 79846d4c572STomoki Sekiyama QTAILQ_INSERT_TAIL(mounts, mount, next); 79946d4c572STomoki Sekiyama } 80046d4c572STomoki Sekiyama free(line); 80146d4c572STomoki Sekiyama 80246d4c572STomoki Sekiyama fclose(fp); 80346d4c572STomoki Sekiyama } 804eab5fd59SPaolo Bonzini #endif 805eab5fd59SPaolo Bonzini 806eab5fd59SPaolo Bonzini #if defined(CONFIG_FSFREEZE) 807c216e5adSMichael Roth 80846d4c572STomoki Sekiyama static char *get_pci_driver(char const *syspath, int pathlen, Error **errp) 80946d4c572STomoki Sekiyama { 81046d4c572STomoki Sekiyama char *path; 81146d4c572STomoki Sekiyama char *dpath; 81246d4c572STomoki Sekiyama char *driver = NULL; 81346d4c572STomoki Sekiyama char buf[PATH_MAX]; 81446d4c572STomoki Sekiyama ssize_t len; 81546d4c572STomoki Sekiyama 81646d4c572STomoki Sekiyama path = g_strndup(syspath, pathlen); 81746d4c572STomoki Sekiyama dpath = g_strdup_printf("%s/driver", path); 81846d4c572STomoki Sekiyama len = readlink(dpath, buf, sizeof(buf) - 1); 81946d4c572STomoki Sekiyama if (len != -1) { 82046d4c572STomoki Sekiyama buf[len] = 0; 82146d4c572STomoki Sekiyama driver = g_strdup(basename(buf)); 82246d4c572STomoki Sekiyama } 82346d4c572STomoki Sekiyama g_free(dpath); 82446d4c572STomoki Sekiyama g_free(path); 82546d4c572STomoki Sekiyama return driver; 82646d4c572STomoki Sekiyama } 82746d4c572STomoki Sekiyama 82846d4c572STomoki Sekiyama static int compare_uint(const void *_a, const void *_b) 82946d4c572STomoki Sekiyama { 83046d4c572STomoki Sekiyama unsigned int a = *(unsigned int *)_a; 83146d4c572STomoki Sekiyama unsigned int b = *(unsigned int *)_b; 83246d4c572STomoki Sekiyama 83346d4c572STomoki Sekiyama return a < b ? -1 : a > b ? 1 : 0; 83446d4c572STomoki Sekiyama } 83546d4c572STomoki Sekiyama 83646d4c572STomoki Sekiyama /* Walk the specified sysfs and build a sorted list of host or ata numbers */ 83746d4c572STomoki Sekiyama static int build_hosts(char const *syspath, char const *host, bool ata, 83846d4c572STomoki Sekiyama unsigned int *hosts, int hosts_max, Error **errp) 83946d4c572STomoki Sekiyama { 84046d4c572STomoki Sekiyama char *path; 84146d4c572STomoki Sekiyama DIR *dir; 84246d4c572STomoki Sekiyama struct dirent *entry; 84346d4c572STomoki Sekiyama int i = 0; 84446d4c572STomoki Sekiyama 84546d4c572STomoki Sekiyama path = g_strndup(syspath, host - syspath); 84646d4c572STomoki Sekiyama dir = opendir(path); 84746d4c572STomoki Sekiyama if (!dir) { 84846d4c572STomoki Sekiyama error_setg_errno(errp, errno, "opendir(\"%s\")", path); 84946d4c572STomoki Sekiyama g_free(path); 85046d4c572STomoki Sekiyama return -1; 85146d4c572STomoki Sekiyama } 85246d4c572STomoki Sekiyama 85346d4c572STomoki Sekiyama while (i < hosts_max) { 85446d4c572STomoki Sekiyama entry = readdir(dir); 85546d4c572STomoki Sekiyama if (!entry) { 85646d4c572STomoki Sekiyama break; 85746d4c572STomoki Sekiyama } 85846d4c572STomoki Sekiyama if (ata && sscanf(entry->d_name, "ata%d", hosts + i) == 1) { 85946d4c572STomoki Sekiyama ++i; 86046d4c572STomoki Sekiyama } else if (!ata && sscanf(entry->d_name, "host%d", hosts + i) == 1) { 86146d4c572STomoki Sekiyama ++i; 86246d4c572STomoki Sekiyama } 86346d4c572STomoki Sekiyama } 86446d4c572STomoki Sekiyama 86546d4c572STomoki Sekiyama qsort(hosts, i, sizeof(hosts[0]), compare_uint); 86646d4c572STomoki Sekiyama 86746d4c572STomoki Sekiyama g_free(path); 86846d4c572STomoki Sekiyama closedir(dir); 86946d4c572STomoki Sekiyama return i; 87046d4c572STomoki Sekiyama } 87146d4c572STomoki Sekiyama 87246d4c572STomoki Sekiyama /* Store disk device info specified by @sysfs into @fs */ 87346d4c572STomoki Sekiyama static void build_guest_fsinfo_for_real_device(char const *syspath, 87446d4c572STomoki Sekiyama GuestFilesystemInfo *fs, 87546d4c572STomoki Sekiyama Error **errp) 87646d4c572STomoki Sekiyama { 87746d4c572STomoki Sekiyama unsigned int pci[4], host, hosts[8], tgt[3]; 87846d4c572STomoki Sekiyama int i, nhosts = 0, pcilen; 87946d4c572STomoki Sekiyama GuestDiskAddress *disk; 88046d4c572STomoki Sekiyama GuestPCIAddress *pciaddr; 88146d4c572STomoki Sekiyama GuestDiskAddressList *list = NULL; 88246d4c572STomoki Sekiyama bool has_ata = false, has_host = false, has_tgt = false; 88346d4c572STomoki Sekiyama char *p, *q, *driver = NULL; 88446d4c572STomoki Sekiyama 88546d4c572STomoki Sekiyama p = strstr(syspath, "/devices/pci"); 88646d4c572STomoki Sekiyama if (!p || sscanf(p + 12, "%*x:%*x/%x:%x:%x.%x%n", 88746d4c572STomoki Sekiyama pci, pci + 1, pci + 2, pci + 3, &pcilen) < 4) { 88846d4c572STomoki Sekiyama g_debug("only pci device is supported: sysfs path \"%s\"", syspath); 88946d4c572STomoki Sekiyama return; 89046d4c572STomoki Sekiyama } 89146d4c572STomoki Sekiyama 89246d4c572STomoki Sekiyama driver = get_pci_driver(syspath, (p + 12 + pcilen) - syspath, errp); 89346d4c572STomoki Sekiyama if (!driver) { 89446d4c572STomoki Sekiyama goto cleanup; 89546d4c572STomoki Sekiyama } 89646d4c572STomoki Sekiyama 89746d4c572STomoki Sekiyama p = strstr(syspath, "/target"); 89846d4c572STomoki Sekiyama if (p && sscanf(p + 7, "%*u:%*u:%*u/%*u:%u:%u:%u", 89946d4c572STomoki Sekiyama tgt, tgt + 1, tgt + 2) == 3) { 90046d4c572STomoki Sekiyama has_tgt = true; 90146d4c572STomoki Sekiyama } 90246d4c572STomoki Sekiyama 90346d4c572STomoki Sekiyama p = strstr(syspath, "/ata"); 90446d4c572STomoki Sekiyama if (p) { 90546d4c572STomoki Sekiyama q = p + 4; 90646d4c572STomoki Sekiyama has_ata = true; 90746d4c572STomoki Sekiyama } else { 90846d4c572STomoki Sekiyama p = strstr(syspath, "/host"); 90946d4c572STomoki Sekiyama q = p + 5; 91046d4c572STomoki Sekiyama } 91146d4c572STomoki Sekiyama if (p && sscanf(q, "%u", &host) == 1) { 91246d4c572STomoki Sekiyama has_host = true; 91346d4c572STomoki Sekiyama nhosts = build_hosts(syspath, p, has_ata, hosts, 91446d4c572STomoki Sekiyama sizeof(hosts) / sizeof(hosts[0]), errp); 91546d4c572STomoki Sekiyama if (nhosts < 0) { 91646d4c572STomoki Sekiyama goto cleanup; 91746d4c572STomoki Sekiyama } 91846d4c572STomoki Sekiyama } 91946d4c572STomoki Sekiyama 92046d4c572STomoki Sekiyama pciaddr = g_malloc0(sizeof(*pciaddr)); 92146d4c572STomoki Sekiyama pciaddr->domain = pci[0]; 92246d4c572STomoki Sekiyama pciaddr->bus = pci[1]; 92346d4c572STomoki Sekiyama pciaddr->slot = pci[2]; 92446d4c572STomoki Sekiyama pciaddr->function = pci[3]; 92546d4c572STomoki Sekiyama 92646d4c572STomoki Sekiyama disk = g_malloc0(sizeof(*disk)); 92746d4c572STomoki Sekiyama disk->pci_controller = pciaddr; 92846d4c572STomoki Sekiyama 92946d4c572STomoki Sekiyama list = g_malloc0(sizeof(*list)); 93046d4c572STomoki Sekiyama list->value = disk; 93146d4c572STomoki Sekiyama 93246d4c572STomoki Sekiyama if (strcmp(driver, "ata_piix") == 0) { 93346d4c572STomoki Sekiyama /* a host per ide bus, target*:0:<unit>:0 */ 93446d4c572STomoki Sekiyama if (!has_host || !has_tgt) { 93546d4c572STomoki Sekiyama g_debug("invalid sysfs path '%s' (driver '%s')", syspath, driver); 93646d4c572STomoki Sekiyama goto cleanup; 93746d4c572STomoki Sekiyama } 93846d4c572STomoki Sekiyama for (i = 0; i < nhosts; i++) { 93946d4c572STomoki Sekiyama if (host == hosts[i]) { 94046d4c572STomoki Sekiyama disk->bus_type = GUEST_DISK_BUS_TYPE_IDE; 94146d4c572STomoki Sekiyama disk->bus = i; 94246d4c572STomoki Sekiyama disk->unit = tgt[1]; 94346d4c572STomoki Sekiyama break; 94446d4c572STomoki Sekiyama } 94546d4c572STomoki Sekiyama } 94646d4c572STomoki Sekiyama if (i >= nhosts) { 94746d4c572STomoki Sekiyama g_debug("no host for '%s' (driver '%s')", syspath, driver); 94846d4c572STomoki Sekiyama goto cleanup; 94946d4c572STomoki Sekiyama } 95046d4c572STomoki Sekiyama } else if (strcmp(driver, "sym53c8xx") == 0) { 95146d4c572STomoki Sekiyama /* scsi(LSI Logic): target*:0:<unit>:0 */ 95246d4c572STomoki Sekiyama if (!has_tgt) { 95346d4c572STomoki Sekiyama g_debug("invalid sysfs path '%s' (driver '%s')", syspath, driver); 95446d4c572STomoki Sekiyama goto cleanup; 95546d4c572STomoki Sekiyama } 95646d4c572STomoki Sekiyama disk->bus_type = GUEST_DISK_BUS_TYPE_SCSI; 95746d4c572STomoki Sekiyama disk->unit = tgt[1]; 95846d4c572STomoki Sekiyama } else if (strcmp(driver, "virtio-pci") == 0) { 95946d4c572STomoki Sekiyama if (has_tgt) { 96046d4c572STomoki Sekiyama /* virtio-scsi: target*:0:0:<unit> */ 96146d4c572STomoki Sekiyama disk->bus_type = GUEST_DISK_BUS_TYPE_SCSI; 96246d4c572STomoki Sekiyama disk->unit = tgt[2]; 96346d4c572STomoki Sekiyama } else { 96446d4c572STomoki Sekiyama /* virtio-blk: 1 disk per 1 device */ 96546d4c572STomoki Sekiyama disk->bus_type = GUEST_DISK_BUS_TYPE_VIRTIO; 96646d4c572STomoki Sekiyama } 96746d4c572STomoki Sekiyama } else if (strcmp(driver, "ahci") == 0) { 96846d4c572STomoki Sekiyama /* ahci: 1 host per 1 unit */ 96946d4c572STomoki Sekiyama if (!has_host || !has_tgt) { 97046d4c572STomoki Sekiyama g_debug("invalid sysfs path '%s' (driver '%s')", syspath, driver); 97146d4c572STomoki Sekiyama goto cleanup; 97246d4c572STomoki Sekiyama } 97346d4c572STomoki Sekiyama for (i = 0; i < nhosts; i++) { 97446d4c572STomoki Sekiyama if (host == hosts[i]) { 97546d4c572STomoki Sekiyama disk->unit = i; 97646d4c572STomoki Sekiyama disk->bus_type = GUEST_DISK_BUS_TYPE_SATA; 97746d4c572STomoki Sekiyama break; 97846d4c572STomoki Sekiyama } 97946d4c572STomoki Sekiyama } 98046d4c572STomoki Sekiyama if (i >= nhosts) { 98146d4c572STomoki Sekiyama g_debug("no host for '%s' (driver '%s')", syspath, driver); 98246d4c572STomoki Sekiyama goto cleanup; 98346d4c572STomoki Sekiyama } 98446d4c572STomoki Sekiyama } else { 98546d4c572STomoki Sekiyama g_debug("unknown driver '%s' (sysfs path '%s')", driver, syspath); 98646d4c572STomoki Sekiyama goto cleanup; 98746d4c572STomoki Sekiyama } 98846d4c572STomoki Sekiyama 98946d4c572STomoki Sekiyama list->next = fs->disk; 99046d4c572STomoki Sekiyama fs->disk = list; 99146d4c572STomoki Sekiyama g_free(driver); 99246d4c572STomoki Sekiyama return; 99346d4c572STomoki Sekiyama 99446d4c572STomoki Sekiyama cleanup: 99546d4c572STomoki Sekiyama if (list) { 99646d4c572STomoki Sekiyama qapi_free_GuestDiskAddressList(list); 99746d4c572STomoki Sekiyama } 99846d4c572STomoki Sekiyama g_free(driver); 99946d4c572STomoki Sekiyama } 100046d4c572STomoki Sekiyama 100146d4c572STomoki Sekiyama static void build_guest_fsinfo_for_device(char const *devpath, 100246d4c572STomoki Sekiyama GuestFilesystemInfo *fs, 100346d4c572STomoki Sekiyama Error **errp); 100446d4c572STomoki Sekiyama 100546d4c572STomoki Sekiyama /* Store a list of slave devices of virtual volume specified by @syspath into 100646d4c572STomoki Sekiyama * @fs */ 100746d4c572STomoki Sekiyama static void build_guest_fsinfo_for_virtual_device(char const *syspath, 100846d4c572STomoki Sekiyama GuestFilesystemInfo *fs, 100946d4c572STomoki Sekiyama Error **errp) 101046d4c572STomoki Sekiyama { 101146d4c572STomoki Sekiyama DIR *dir; 101246d4c572STomoki Sekiyama char *dirpath; 1013e668d1b8Szhanghailiang struct dirent *entry; 101446d4c572STomoki Sekiyama 101546d4c572STomoki Sekiyama dirpath = g_strdup_printf("%s/slaves", syspath); 101646d4c572STomoki Sekiyama dir = opendir(dirpath); 101746d4c572STomoki Sekiyama if (!dir) { 101846d4c572STomoki Sekiyama error_setg_errno(errp, errno, "opendir(\"%s\")", dirpath); 101946d4c572STomoki Sekiyama g_free(dirpath); 102046d4c572STomoki Sekiyama return; 102146d4c572STomoki Sekiyama } 102246d4c572STomoki Sekiyama 102346d4c572STomoki Sekiyama for (;;) { 1024e668d1b8Szhanghailiang errno = 0; 1025e668d1b8Szhanghailiang entry = readdir(dir); 1026e668d1b8Szhanghailiang if (entry == NULL) { 1027e668d1b8Szhanghailiang if (errno) { 1028e668d1b8Szhanghailiang error_setg_errno(errp, errno, "readdir(\"%s\")", dirpath); 102946d4c572STomoki Sekiyama } 103046d4c572STomoki Sekiyama break; 103146d4c572STomoki Sekiyama } 103246d4c572STomoki Sekiyama 1033e668d1b8Szhanghailiang if (entry->d_type == DT_LNK) { 1034e668d1b8Szhanghailiang char *path; 1035e668d1b8Szhanghailiang 1036e668d1b8Szhanghailiang g_debug(" slave device '%s'", entry->d_name); 1037e668d1b8Szhanghailiang path = g_strdup_printf("%s/slaves/%s", syspath, entry->d_name); 1038e668d1b8Szhanghailiang build_guest_fsinfo_for_device(path, fs, errp); 1039e668d1b8Szhanghailiang g_free(path); 104046d4c572STomoki Sekiyama 104146d4c572STomoki Sekiyama if (*errp) { 104246d4c572STomoki Sekiyama break; 104346d4c572STomoki Sekiyama } 104446d4c572STomoki Sekiyama } 104546d4c572STomoki Sekiyama } 104646d4c572STomoki Sekiyama 1047e668d1b8Szhanghailiang g_free(dirpath); 104846d4c572STomoki Sekiyama closedir(dir); 104946d4c572STomoki Sekiyama } 105046d4c572STomoki Sekiyama 105146d4c572STomoki Sekiyama /* Dispatch to functions for virtual/real device */ 105246d4c572STomoki Sekiyama static void build_guest_fsinfo_for_device(char const *devpath, 105346d4c572STomoki Sekiyama GuestFilesystemInfo *fs, 105446d4c572STomoki Sekiyama Error **errp) 105546d4c572STomoki Sekiyama { 105646d4c572STomoki Sekiyama char *syspath = realpath(devpath, NULL); 105746d4c572STomoki Sekiyama 105846d4c572STomoki Sekiyama if (!syspath) { 105946d4c572STomoki Sekiyama error_setg_errno(errp, errno, "realpath(\"%s\")", devpath); 106046d4c572STomoki Sekiyama return; 106146d4c572STomoki Sekiyama } 106246d4c572STomoki Sekiyama 106346d4c572STomoki Sekiyama if (!fs->name) { 106446d4c572STomoki Sekiyama fs->name = g_strdup(basename(syspath)); 106546d4c572STomoki Sekiyama } 106646d4c572STomoki Sekiyama 106746d4c572STomoki Sekiyama g_debug(" parse sysfs path '%s'", syspath); 106846d4c572STomoki Sekiyama 106946d4c572STomoki Sekiyama if (strstr(syspath, "/devices/virtual/block/")) { 107046d4c572STomoki Sekiyama build_guest_fsinfo_for_virtual_device(syspath, fs, errp); 107146d4c572STomoki Sekiyama } else { 107246d4c572STomoki Sekiyama build_guest_fsinfo_for_real_device(syspath, fs, errp); 107346d4c572STomoki Sekiyama } 107446d4c572STomoki Sekiyama 107546d4c572STomoki Sekiyama free(syspath); 107646d4c572STomoki Sekiyama } 107746d4c572STomoki Sekiyama 107846d4c572STomoki Sekiyama /* Return a list of the disk device(s)' info which @mount lies on */ 107946d4c572STomoki Sekiyama static GuestFilesystemInfo *build_guest_fsinfo(struct FsMount *mount, 108046d4c572STomoki Sekiyama Error **errp) 108146d4c572STomoki Sekiyama { 108246d4c572STomoki Sekiyama GuestFilesystemInfo *fs = g_malloc0(sizeof(*fs)); 108346d4c572STomoki Sekiyama char *devpath = g_strdup_printf("/sys/dev/block/%u:%u", 108446d4c572STomoki Sekiyama mount->devmajor, mount->devminor); 108546d4c572STomoki Sekiyama 108646d4c572STomoki Sekiyama fs->mountpoint = g_strdup(mount->dirname); 108746d4c572STomoki Sekiyama fs->type = g_strdup(mount->devtype); 108846d4c572STomoki Sekiyama build_guest_fsinfo_for_device(devpath, fs, errp); 108946d4c572STomoki Sekiyama 109046d4c572STomoki Sekiyama g_free(devpath); 109146d4c572STomoki Sekiyama return fs; 109246d4c572STomoki Sekiyama } 109346d4c572STomoki Sekiyama 109446d4c572STomoki Sekiyama GuestFilesystemInfoList *qmp_guest_get_fsinfo(Error **errp) 109546d4c572STomoki Sekiyama { 109646d4c572STomoki Sekiyama FsMountList mounts; 109746d4c572STomoki Sekiyama struct FsMount *mount; 109846d4c572STomoki Sekiyama GuestFilesystemInfoList *new, *ret = NULL; 109946d4c572STomoki Sekiyama Error *local_err = NULL; 110046d4c572STomoki Sekiyama 110146d4c572STomoki Sekiyama QTAILQ_INIT(&mounts); 110246d4c572STomoki Sekiyama build_fs_mount_list(&mounts, &local_err); 110346d4c572STomoki Sekiyama if (local_err) { 110446d4c572STomoki Sekiyama error_propagate(errp, local_err); 110546d4c572STomoki Sekiyama return NULL; 110646d4c572STomoki Sekiyama } 110746d4c572STomoki Sekiyama 110846d4c572STomoki Sekiyama QTAILQ_FOREACH(mount, &mounts, next) { 110946d4c572STomoki Sekiyama g_debug("Building guest fsinfo for '%s'", mount->dirname); 111046d4c572STomoki Sekiyama 111146d4c572STomoki Sekiyama new = g_malloc0(sizeof(*ret)); 111246d4c572STomoki Sekiyama new->value = build_guest_fsinfo(mount, &local_err); 111346d4c572STomoki Sekiyama new->next = ret; 111446d4c572STomoki Sekiyama ret = new; 111546d4c572STomoki Sekiyama if (local_err) { 111646d4c572STomoki Sekiyama error_propagate(errp, local_err); 111746d4c572STomoki Sekiyama qapi_free_GuestFilesystemInfoList(ret); 111846d4c572STomoki Sekiyama ret = NULL; 111946d4c572STomoki Sekiyama break; 112046d4c572STomoki Sekiyama } 112146d4c572STomoki Sekiyama } 112246d4c572STomoki Sekiyama 112346d4c572STomoki Sekiyama free_fs_mount_list(&mounts); 112446d4c572STomoki Sekiyama return ret; 112546d4c572STomoki Sekiyama } 112646d4c572STomoki Sekiyama 112746d4c572STomoki Sekiyama 1128ec0f694cSTomoki Sekiyama typedef enum { 1129ec0f694cSTomoki Sekiyama FSFREEZE_HOOK_THAW = 0, 1130ec0f694cSTomoki Sekiyama FSFREEZE_HOOK_FREEZE, 1131ec0f694cSTomoki Sekiyama } FsfreezeHookArg; 1132ec0f694cSTomoki Sekiyama 113313a439ecSStefan Weil static const char *fsfreeze_hook_arg_string[] = { 1134ec0f694cSTomoki Sekiyama "thaw", 1135ec0f694cSTomoki Sekiyama "freeze", 1136ec0f694cSTomoki Sekiyama }; 1137ec0f694cSTomoki Sekiyama 113877dbc81bSMarkus Armbruster static void execute_fsfreeze_hook(FsfreezeHookArg arg, Error **errp) 1139ec0f694cSTomoki Sekiyama { 1140ec0f694cSTomoki Sekiyama int status; 1141ec0f694cSTomoki Sekiyama pid_t pid; 1142ec0f694cSTomoki Sekiyama const char *hook; 1143ec0f694cSTomoki Sekiyama const char *arg_str = fsfreeze_hook_arg_string[arg]; 1144ec0f694cSTomoki Sekiyama Error *local_err = NULL; 1145ec0f694cSTomoki Sekiyama 1146ec0f694cSTomoki Sekiyama hook = ga_fsfreeze_hook(ga_state); 1147ec0f694cSTomoki Sekiyama if (!hook) { 1148ec0f694cSTomoki Sekiyama return; 1149ec0f694cSTomoki Sekiyama } 1150ec0f694cSTomoki Sekiyama if (access(hook, X_OK) != 0) { 115177dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "can't access fsfreeze hook '%s'", hook); 1152ec0f694cSTomoki Sekiyama return; 1153ec0f694cSTomoki Sekiyama } 1154ec0f694cSTomoki Sekiyama 1155ec0f694cSTomoki Sekiyama slog("executing fsfreeze hook with arg '%s'", arg_str); 1156ec0f694cSTomoki Sekiyama pid = fork(); 1157ec0f694cSTomoki Sekiyama if (pid == 0) { 1158ec0f694cSTomoki Sekiyama setsid(); 1159ec0f694cSTomoki Sekiyama reopen_fd_to_null(0); 1160ec0f694cSTomoki Sekiyama reopen_fd_to_null(1); 1161ec0f694cSTomoki Sekiyama reopen_fd_to_null(2); 1162ec0f694cSTomoki Sekiyama 1163ec0f694cSTomoki Sekiyama execle(hook, hook, arg_str, NULL, environ); 1164ec0f694cSTomoki Sekiyama _exit(EXIT_FAILURE); 1165ec0f694cSTomoki Sekiyama } else if (pid < 0) { 116677dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to create child process"); 1167ec0f694cSTomoki Sekiyama return; 1168ec0f694cSTomoki Sekiyama } 1169ec0f694cSTomoki Sekiyama 1170ec0f694cSTomoki Sekiyama ga_wait_child(pid, &status, &local_err); 117184d18f06SMarkus Armbruster if (local_err) { 117277dbc81bSMarkus Armbruster error_propagate(errp, local_err); 1173ec0f694cSTomoki Sekiyama return; 1174ec0f694cSTomoki Sekiyama } 1175ec0f694cSTomoki Sekiyama 1176ec0f694cSTomoki Sekiyama if (!WIFEXITED(status)) { 117777dbc81bSMarkus Armbruster error_setg(errp, "fsfreeze hook has terminated abnormally"); 1178ec0f694cSTomoki Sekiyama return; 1179ec0f694cSTomoki Sekiyama } 1180ec0f694cSTomoki Sekiyama 1181ec0f694cSTomoki Sekiyama status = WEXITSTATUS(status); 1182ec0f694cSTomoki Sekiyama if (status) { 118377dbc81bSMarkus Armbruster error_setg(errp, "fsfreeze hook has failed with status %d", status); 1184ec0f694cSTomoki Sekiyama return; 1185ec0f694cSTomoki Sekiyama } 1186ec0f694cSTomoki Sekiyama } 1187ec0f694cSTomoki Sekiyama 1188c216e5adSMichael Roth /* 1189c216e5adSMichael Roth * Return status of freeze/thaw 1190c216e5adSMichael Roth */ 119177dbc81bSMarkus Armbruster GuestFsfreezeStatus qmp_guest_fsfreeze_status(Error **errp) 1192c216e5adSMichael Roth { 1193f22d85e9SMichael Roth if (ga_is_frozen(ga_state)) { 1194f22d85e9SMichael Roth return GUEST_FSFREEZE_STATUS_FROZEN; 1195f22d85e9SMichael Roth } 1196f22d85e9SMichael Roth 1197f22d85e9SMichael Roth return GUEST_FSFREEZE_STATUS_THAWED; 1198c216e5adSMichael Roth } 1199c216e5adSMichael Roth 1200e99bce20STomoki Sekiyama int64_t qmp_guest_fsfreeze_freeze(Error **errp) 1201e99bce20STomoki Sekiyama { 1202e99bce20STomoki Sekiyama return qmp_guest_fsfreeze_freeze_list(false, NULL, errp); 1203e99bce20STomoki Sekiyama } 1204e99bce20STomoki Sekiyama 1205c216e5adSMichael Roth /* 1206c216e5adSMichael Roth * Walk list of mounted file systems in the guest, and freeze the ones which 1207c216e5adSMichael Roth * are real local file systems. 1208c216e5adSMichael Roth */ 1209e99bce20STomoki Sekiyama int64_t qmp_guest_fsfreeze_freeze_list(bool has_mountpoints, 1210e99bce20STomoki Sekiyama strList *mountpoints, 1211e99bce20STomoki Sekiyama Error **errp) 1212c216e5adSMichael Roth { 1213c216e5adSMichael Roth int ret = 0, i = 0; 1214e99bce20STomoki Sekiyama strList *list; 1215af02203fSPaolo Bonzini FsMountList mounts; 1216af02203fSPaolo Bonzini struct FsMount *mount; 1217261551d1SLuiz Capitulino Error *local_err = NULL; 1218c216e5adSMichael Roth int fd; 1219c216e5adSMichael Roth 1220c216e5adSMichael Roth slog("guest-fsfreeze called"); 1221c216e5adSMichael Roth 1222ec0f694cSTomoki Sekiyama execute_fsfreeze_hook(FSFREEZE_HOOK_FREEZE, &local_err); 122384d18f06SMarkus Armbruster if (local_err) { 122477dbc81bSMarkus Armbruster error_propagate(errp, local_err); 1225ec0f694cSTomoki Sekiyama return -1; 1226ec0f694cSTomoki Sekiyama } 1227ec0f694cSTomoki Sekiyama 12289e8aded4SMichael Roth QTAILQ_INIT(&mounts); 1229261551d1SLuiz Capitulino build_fs_mount_list(&mounts, &local_err); 123084d18f06SMarkus Armbruster if (local_err) { 123177dbc81bSMarkus Armbruster error_propagate(errp, local_err); 1232261551d1SLuiz Capitulino return -1; 1233c216e5adSMichael Roth } 1234c216e5adSMichael Roth 1235c216e5adSMichael Roth /* cannot risk guest agent blocking itself on a write in this state */ 1236f22d85e9SMichael Roth ga_set_frozen(ga_state); 1237c216e5adSMichael Roth 1238e5d9adbdSTomoki Sekiyama QTAILQ_FOREACH_REVERSE(mount, &mounts, FsMountList, next) { 1239e99bce20STomoki Sekiyama /* To issue fsfreeze in the reverse order of mounts, check if the 1240e99bce20STomoki Sekiyama * mount is listed in the list here */ 1241e99bce20STomoki Sekiyama if (has_mountpoints) { 1242e99bce20STomoki Sekiyama for (list = mountpoints; list; list = list->next) { 1243e99bce20STomoki Sekiyama if (strcmp(list->value, mount->dirname) == 0) { 1244e99bce20STomoki Sekiyama break; 1245e99bce20STomoki Sekiyama } 1246e99bce20STomoki Sekiyama } 1247e99bce20STomoki Sekiyama if (!list) { 1248e99bce20STomoki Sekiyama continue; 1249e99bce20STomoki Sekiyama } 1250e99bce20STomoki Sekiyama } 1251e99bce20STomoki Sekiyama 1252c216e5adSMichael Roth fd = qemu_open(mount->dirname, O_RDONLY); 1253c216e5adSMichael Roth if (fd == -1) { 125477dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to open %s", mount->dirname); 1255c216e5adSMichael Roth goto error; 1256c216e5adSMichael Roth } 1257c216e5adSMichael Roth 1258c216e5adSMichael Roth /* we try to cull filesytems we know won't work in advance, but other 1259c216e5adSMichael Roth * filesytems may not implement fsfreeze for less obvious reasons. 12609e8aded4SMichael Roth * these will report EOPNOTSUPP. we simply ignore these when tallying 12619e8aded4SMichael Roth * the number of frozen filesystems. 12629e8aded4SMichael Roth * 12639e8aded4SMichael Roth * any other error means a failure to freeze a filesystem we 12649e8aded4SMichael Roth * expect to be freezable, so return an error in those cases 12659e8aded4SMichael Roth * and return system to thawed state. 1266c216e5adSMichael Roth */ 1267c216e5adSMichael Roth ret = ioctl(fd, FIFREEZE); 12689e8aded4SMichael Roth if (ret == -1) { 12699e8aded4SMichael Roth if (errno != EOPNOTSUPP) { 127077dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to freeze %s", 1271617fbbc1SLuiz Capitulino mount->dirname); 1272c216e5adSMichael Roth close(fd); 1273c216e5adSMichael Roth goto error; 1274c216e5adSMichael Roth } 12759e8aded4SMichael Roth } else { 1276c216e5adSMichael Roth i++; 1277c216e5adSMichael Roth } 12789e8aded4SMichael Roth close(fd); 12799e8aded4SMichael Roth } 1280c216e5adSMichael Roth 1281af02203fSPaolo Bonzini free_fs_mount_list(&mounts); 1282c216e5adSMichael Roth return i; 1283c216e5adSMichael Roth 1284c216e5adSMichael Roth error: 1285af02203fSPaolo Bonzini free_fs_mount_list(&mounts); 1286c216e5adSMichael Roth qmp_guest_fsfreeze_thaw(NULL); 1287c216e5adSMichael Roth return 0; 1288c216e5adSMichael Roth } 1289c216e5adSMichael Roth 1290c216e5adSMichael Roth /* 1291c216e5adSMichael Roth * Walk list of frozen file systems in the guest, and thaw them. 1292c216e5adSMichael Roth */ 129377dbc81bSMarkus Armbruster int64_t qmp_guest_fsfreeze_thaw(Error **errp) 1294c216e5adSMichael Roth { 1295c216e5adSMichael Roth int ret; 1296af02203fSPaolo Bonzini FsMountList mounts; 1297af02203fSPaolo Bonzini FsMount *mount; 12989e8aded4SMichael Roth int fd, i = 0, logged; 1299261551d1SLuiz Capitulino Error *local_err = NULL; 1300c216e5adSMichael Roth 13019e8aded4SMichael Roth QTAILQ_INIT(&mounts); 1302261551d1SLuiz Capitulino build_fs_mount_list(&mounts, &local_err); 130384d18f06SMarkus Armbruster if (local_err) { 130477dbc81bSMarkus Armbruster error_propagate(errp, local_err); 13059e8aded4SMichael Roth return 0; 13069e8aded4SMichael Roth } 13079e8aded4SMichael Roth 13089e8aded4SMichael Roth QTAILQ_FOREACH(mount, &mounts, next) { 13099e8aded4SMichael Roth logged = false; 1310c216e5adSMichael Roth fd = qemu_open(mount->dirname, O_RDONLY); 1311c216e5adSMichael Roth if (fd == -1) { 1312c216e5adSMichael Roth continue; 1313c216e5adSMichael Roth } 13149e8aded4SMichael Roth /* we have no way of knowing whether a filesystem was actually unfrozen 13159e8aded4SMichael Roth * as a result of a successful call to FITHAW, only that if an error 13169e8aded4SMichael Roth * was returned the filesystem was *not* unfrozen by that particular 13179e8aded4SMichael Roth * call. 13189e8aded4SMichael Roth * 1319a31f0531SJim Meyering * since multiple preceding FIFREEZEs require multiple calls to FITHAW 13209e8aded4SMichael Roth * to unfreeze, continuing issuing FITHAW until an error is returned, 13219e8aded4SMichael Roth * in which case either the filesystem is in an unfreezable state, or, 13229e8aded4SMichael Roth * more likely, it was thawed previously (and remains so afterward). 13239e8aded4SMichael Roth * 13249e8aded4SMichael Roth * also, since the most recent successful call is the one that did 13259e8aded4SMichael Roth * the actual unfreeze, we can use this to provide an accurate count 13269e8aded4SMichael Roth * of the number of filesystems unfrozen by guest-fsfreeze-thaw, which 13279e8aded4SMichael Roth * may * be useful for determining whether a filesystem was unfrozen 13289e8aded4SMichael Roth * during the freeze/thaw phase by a process other than qemu-ga. 13299e8aded4SMichael Roth */ 13309e8aded4SMichael Roth do { 1331c216e5adSMichael Roth ret = ioctl(fd, FITHAW); 13329e8aded4SMichael Roth if (ret == 0 && !logged) { 1333c216e5adSMichael Roth i++; 13349e8aded4SMichael Roth logged = true; 13359e8aded4SMichael Roth } 13369e8aded4SMichael Roth } while (ret == 0); 13379e8aded4SMichael Roth close(fd); 1338c216e5adSMichael Roth } 1339c216e5adSMichael Roth 1340f22d85e9SMichael Roth ga_unset_frozen(ga_state); 1341af02203fSPaolo Bonzini free_fs_mount_list(&mounts); 1342ec0f694cSTomoki Sekiyama 134377dbc81bSMarkus Armbruster execute_fsfreeze_hook(FSFREEZE_HOOK_THAW, errp); 1344ec0f694cSTomoki Sekiyama 1345c216e5adSMichael Roth return i; 1346c216e5adSMichael Roth } 1347c216e5adSMichael Roth 1348c216e5adSMichael Roth static void guest_fsfreeze_cleanup(void) 1349c216e5adSMichael Roth { 1350c216e5adSMichael Roth Error *err = NULL; 1351c216e5adSMichael Roth 1352f22d85e9SMichael Roth if (ga_is_frozen(ga_state) == GUEST_FSFREEZE_STATUS_FROZEN) { 13536f686749SMarkus Armbruster qmp_guest_fsfreeze_thaw(&err); 13546f686749SMarkus Armbruster if (err) { 13556f686749SMarkus Armbruster slog("failed to clean up frozen filesystems: %s", 13566f686749SMarkus Armbruster error_get_pretty(err)); 13576f686749SMarkus Armbruster error_free(err); 1358c216e5adSMichael Roth } 1359c216e5adSMichael Roth } 1360c216e5adSMichael Roth } 1361e72c3f2eSMichael Roth #endif /* CONFIG_FSFREEZE */ 1362c216e5adSMichael Roth 1363eab5fd59SPaolo Bonzini #if defined(CONFIG_FSTRIM) 1364eab5fd59SPaolo Bonzini /* 1365eab5fd59SPaolo Bonzini * Walk list of mounted file systems in the guest, and trim them. 1366eab5fd59SPaolo Bonzini */ 1367e82855d9SJustin Ossevoort GuestFilesystemTrimResponse * 1368e82855d9SJustin Ossevoort qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **errp) 1369eab5fd59SPaolo Bonzini { 1370e82855d9SJustin Ossevoort GuestFilesystemTrimResponse *response; 1371e82855d9SJustin Ossevoort GuestFilesystemTrimResultList *list; 1372e82855d9SJustin Ossevoort GuestFilesystemTrimResult *result; 1373eab5fd59SPaolo Bonzini int ret = 0; 1374eab5fd59SPaolo Bonzini FsMountList mounts; 1375eab5fd59SPaolo Bonzini struct FsMount *mount; 1376eab5fd59SPaolo Bonzini int fd; 1377261551d1SLuiz Capitulino Error *local_err = NULL; 137873a652a1SJustin Ossevoort struct fstrim_range r; 1379eab5fd59SPaolo Bonzini 1380eab5fd59SPaolo Bonzini slog("guest-fstrim called"); 1381eab5fd59SPaolo Bonzini 1382eab5fd59SPaolo Bonzini QTAILQ_INIT(&mounts); 1383261551d1SLuiz Capitulino build_fs_mount_list(&mounts, &local_err); 138484d18f06SMarkus Armbruster if (local_err) { 138577dbc81bSMarkus Armbruster error_propagate(errp, local_err); 1386e82855d9SJustin Ossevoort return NULL; 1387eab5fd59SPaolo Bonzini } 1388eab5fd59SPaolo Bonzini 1389e82855d9SJustin Ossevoort response = g_malloc0(sizeof(*response)); 1390e82855d9SJustin Ossevoort 1391eab5fd59SPaolo Bonzini QTAILQ_FOREACH(mount, &mounts, next) { 1392e82855d9SJustin Ossevoort result = g_malloc0(sizeof(*result)); 1393e82855d9SJustin Ossevoort result->path = g_strdup(mount->dirname); 1394e82855d9SJustin Ossevoort 1395e82855d9SJustin Ossevoort list = g_malloc0(sizeof(*list)); 1396e82855d9SJustin Ossevoort list->value = result; 1397e82855d9SJustin Ossevoort list->next = response->paths; 1398e82855d9SJustin Ossevoort response->paths = list; 1399e82855d9SJustin Ossevoort 1400eab5fd59SPaolo Bonzini fd = qemu_open(mount->dirname, O_RDONLY); 1401eab5fd59SPaolo Bonzini if (fd == -1) { 1402e82855d9SJustin Ossevoort result->error = g_strdup_printf("failed to open: %s", 1403e82855d9SJustin Ossevoort strerror(errno)); 1404e82855d9SJustin Ossevoort result->has_error = true; 1405e82855d9SJustin Ossevoort continue; 1406eab5fd59SPaolo Bonzini } 1407eab5fd59SPaolo Bonzini 1408eab5fd59SPaolo Bonzini /* We try to cull filesytems we know won't work in advance, but other 1409eab5fd59SPaolo Bonzini * filesytems may not implement fstrim for less obvious reasons. These 1410e82855d9SJustin Ossevoort * will report EOPNOTSUPP; while in some other cases ENOTTY will be 1411e82855d9SJustin Ossevoort * reported (e.g. CD-ROMs). 1412e82855d9SJustin Ossevoort * Any other error means an unexpected error. 1413eab5fd59SPaolo Bonzini */ 141473a652a1SJustin Ossevoort r.start = 0; 141573a652a1SJustin Ossevoort r.len = -1; 141673a652a1SJustin Ossevoort r.minlen = has_minimum ? minimum : 0; 1417eab5fd59SPaolo Bonzini ret = ioctl(fd, FITRIM, &r); 1418eab5fd59SPaolo Bonzini if (ret == -1) { 1419e82855d9SJustin Ossevoort result->has_error = true; 1420e82855d9SJustin Ossevoort if (errno == ENOTTY || errno == EOPNOTSUPP) { 1421e82855d9SJustin Ossevoort result->error = g_strdup("trim not supported"); 1422e82855d9SJustin Ossevoort } else { 1423e82855d9SJustin Ossevoort result->error = g_strdup_printf("failed to trim: %s", 1424e82855d9SJustin Ossevoort strerror(errno)); 1425e82855d9SJustin Ossevoort } 1426eab5fd59SPaolo Bonzini close(fd); 1427e82855d9SJustin Ossevoort continue; 1428eab5fd59SPaolo Bonzini } 1429e82855d9SJustin Ossevoort 1430e82855d9SJustin Ossevoort result->has_minimum = true; 1431e82855d9SJustin Ossevoort result->minimum = r.minlen; 1432e82855d9SJustin Ossevoort result->has_trimmed = true; 1433e82855d9SJustin Ossevoort result->trimmed = r.len; 1434eab5fd59SPaolo Bonzini close(fd); 1435eab5fd59SPaolo Bonzini } 1436eab5fd59SPaolo Bonzini 1437eab5fd59SPaolo Bonzini free_fs_mount_list(&mounts); 1438e82855d9SJustin Ossevoort return response; 1439eab5fd59SPaolo Bonzini } 1440eab5fd59SPaolo Bonzini #endif /* CONFIG_FSTRIM */ 1441eab5fd59SPaolo Bonzini 1442eab5fd59SPaolo Bonzini 144311d0f125SLuiz Capitulino #define LINUX_SYS_STATE_FILE "/sys/power/state" 144411d0f125SLuiz Capitulino #define SUSPEND_SUPPORTED 0 144511d0f125SLuiz Capitulino #define SUSPEND_NOT_SUPPORTED 1 144611d0f125SLuiz Capitulino 144711d0f125SLuiz Capitulino static void bios_supports_mode(const char *pmutils_bin, const char *pmutils_arg, 144877dbc81bSMarkus Armbruster const char *sysfile_str, Error **errp) 144911d0f125SLuiz Capitulino { 14506b26e837SLuiz Capitulino Error *local_err = NULL; 145111d0f125SLuiz Capitulino char *pmutils_path; 14526b26e837SLuiz Capitulino pid_t pid; 1453dc8764f0SLuiz Capitulino int status; 145411d0f125SLuiz Capitulino 145511d0f125SLuiz Capitulino pmutils_path = g_find_program_in_path(pmutils_bin); 145611d0f125SLuiz Capitulino 145711d0f125SLuiz Capitulino pid = fork(); 145811d0f125SLuiz Capitulino if (!pid) { 1459dc8764f0SLuiz Capitulino char buf[32]; /* hopefully big enough */ 1460dc8764f0SLuiz Capitulino ssize_t ret; 1461dc8764f0SLuiz Capitulino int fd; 146211d0f125SLuiz Capitulino 146311d0f125SLuiz Capitulino setsid(); 146411d0f125SLuiz Capitulino reopen_fd_to_null(0); 146511d0f125SLuiz Capitulino reopen_fd_to_null(1); 146611d0f125SLuiz Capitulino reopen_fd_to_null(2); 146711d0f125SLuiz Capitulino 146811d0f125SLuiz Capitulino if (pmutils_path) { 146911d0f125SLuiz Capitulino execle(pmutils_path, pmutils_bin, pmutils_arg, NULL, environ); 147011d0f125SLuiz Capitulino } 147111d0f125SLuiz Capitulino 147211d0f125SLuiz Capitulino /* 147311d0f125SLuiz Capitulino * If we get here either pm-utils is not installed or execle() has 147411d0f125SLuiz Capitulino * failed. Let's try the manual method if the caller wants it. 147511d0f125SLuiz Capitulino */ 147611d0f125SLuiz Capitulino 147711d0f125SLuiz Capitulino if (!sysfile_str) { 147811d0f125SLuiz Capitulino _exit(SUSPEND_NOT_SUPPORTED); 147911d0f125SLuiz Capitulino } 148011d0f125SLuiz Capitulino 148111d0f125SLuiz Capitulino fd = open(LINUX_SYS_STATE_FILE, O_RDONLY); 148211d0f125SLuiz Capitulino if (fd < 0) { 148311d0f125SLuiz Capitulino _exit(SUSPEND_NOT_SUPPORTED); 148411d0f125SLuiz Capitulino } 148511d0f125SLuiz Capitulino 148611d0f125SLuiz Capitulino ret = read(fd, buf, sizeof(buf)-1); 148711d0f125SLuiz Capitulino if (ret <= 0) { 148811d0f125SLuiz Capitulino _exit(SUSPEND_NOT_SUPPORTED); 148911d0f125SLuiz Capitulino } 149011d0f125SLuiz Capitulino buf[ret] = '\0'; 149111d0f125SLuiz Capitulino 149211d0f125SLuiz Capitulino if (strstr(buf, sysfile_str)) { 149311d0f125SLuiz Capitulino _exit(SUSPEND_SUPPORTED); 149411d0f125SLuiz Capitulino } 149511d0f125SLuiz Capitulino 149611d0f125SLuiz Capitulino _exit(SUSPEND_NOT_SUPPORTED); 14976b26e837SLuiz Capitulino } else if (pid < 0) { 149877dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to create child process"); 14996b26e837SLuiz Capitulino goto out; 150011d0f125SLuiz Capitulino } 150111d0f125SLuiz Capitulino 15026b26e837SLuiz Capitulino ga_wait_child(pid, &status, &local_err); 150384d18f06SMarkus Armbruster if (local_err) { 150477dbc81bSMarkus Armbruster error_propagate(errp, local_err); 15056b26e837SLuiz Capitulino goto out; 150611d0f125SLuiz Capitulino } 150711d0f125SLuiz Capitulino 15086b26e837SLuiz Capitulino if (!WIFEXITED(status)) { 150977dbc81bSMarkus Armbruster error_setg(errp, "child process has terminated abnormally"); 15106b26e837SLuiz Capitulino goto out; 15116b26e837SLuiz Capitulino } 15126b26e837SLuiz Capitulino 1513dc8764f0SLuiz Capitulino switch (WEXITSTATUS(status)) { 1514dc8764f0SLuiz Capitulino case SUSPEND_SUPPORTED: 15156b26e837SLuiz Capitulino goto out; 1516dc8764f0SLuiz Capitulino case SUSPEND_NOT_SUPPORTED: 151777dbc81bSMarkus Armbruster error_setg(errp, 15186b26e837SLuiz Capitulino "the requested suspend mode is not supported by the guest"); 15196b26e837SLuiz Capitulino goto out; 1520dc8764f0SLuiz Capitulino default: 152177dbc81bSMarkus Armbruster error_setg(errp, 15226b26e837SLuiz Capitulino "the helper program '%s' returned an unexpected exit status" 15236b26e837SLuiz Capitulino " code (%d)", pmutils_path, WEXITSTATUS(status)); 15246b26e837SLuiz Capitulino goto out; 1525dc8764f0SLuiz Capitulino } 152611d0f125SLuiz Capitulino 15276b26e837SLuiz Capitulino out: 15286b26e837SLuiz Capitulino g_free(pmutils_path); 152911d0f125SLuiz Capitulino } 153011d0f125SLuiz Capitulino 153111d0f125SLuiz Capitulino static void guest_suspend(const char *pmutils_bin, const char *sysfile_str, 153277dbc81bSMarkus Armbruster Error **errp) 153311d0f125SLuiz Capitulino { 15347b376087SLuiz Capitulino Error *local_err = NULL; 153511d0f125SLuiz Capitulino char *pmutils_path; 15367b376087SLuiz Capitulino pid_t pid; 1537dc8764f0SLuiz Capitulino int status; 153811d0f125SLuiz Capitulino 153911d0f125SLuiz Capitulino pmutils_path = g_find_program_in_path(pmutils_bin); 154011d0f125SLuiz Capitulino 154111d0f125SLuiz Capitulino pid = fork(); 154211d0f125SLuiz Capitulino if (pid == 0) { 154311d0f125SLuiz Capitulino /* child */ 154411d0f125SLuiz Capitulino int fd; 154511d0f125SLuiz Capitulino 154611d0f125SLuiz Capitulino setsid(); 154711d0f125SLuiz Capitulino reopen_fd_to_null(0); 154811d0f125SLuiz Capitulino reopen_fd_to_null(1); 154911d0f125SLuiz Capitulino reopen_fd_to_null(2); 155011d0f125SLuiz Capitulino 155111d0f125SLuiz Capitulino if (pmutils_path) { 155211d0f125SLuiz Capitulino execle(pmutils_path, pmutils_bin, NULL, environ); 155311d0f125SLuiz Capitulino } 155411d0f125SLuiz Capitulino 155511d0f125SLuiz Capitulino /* 155611d0f125SLuiz Capitulino * If we get here either pm-utils is not installed or execle() has 155711d0f125SLuiz Capitulino * failed. Let's try the manual method if the caller wants it. 155811d0f125SLuiz Capitulino */ 155911d0f125SLuiz Capitulino 156011d0f125SLuiz Capitulino if (!sysfile_str) { 156111d0f125SLuiz Capitulino _exit(EXIT_FAILURE); 156211d0f125SLuiz Capitulino } 156311d0f125SLuiz Capitulino 156411d0f125SLuiz Capitulino fd = open(LINUX_SYS_STATE_FILE, O_WRONLY); 156511d0f125SLuiz Capitulino if (fd < 0) { 156611d0f125SLuiz Capitulino _exit(EXIT_FAILURE); 156711d0f125SLuiz Capitulino } 156811d0f125SLuiz Capitulino 156911d0f125SLuiz Capitulino if (write(fd, sysfile_str, strlen(sysfile_str)) < 0) { 157011d0f125SLuiz Capitulino _exit(EXIT_FAILURE); 157111d0f125SLuiz Capitulino } 157211d0f125SLuiz Capitulino 157311d0f125SLuiz Capitulino _exit(EXIT_SUCCESS); 15747b376087SLuiz Capitulino } else if (pid < 0) { 157577dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to create child process"); 15767b376087SLuiz Capitulino goto out; 157711d0f125SLuiz Capitulino } 157811d0f125SLuiz Capitulino 15797b376087SLuiz Capitulino ga_wait_child(pid, &status, &local_err); 158084d18f06SMarkus Armbruster if (local_err) { 158177dbc81bSMarkus Armbruster error_propagate(errp, local_err); 15827b376087SLuiz Capitulino goto out; 15837b376087SLuiz Capitulino } 15847b376087SLuiz Capitulino 15857b376087SLuiz Capitulino if (!WIFEXITED(status)) { 158677dbc81bSMarkus Armbruster error_setg(errp, "child process has terminated abnormally"); 15877b376087SLuiz Capitulino goto out; 15887b376087SLuiz Capitulino } 15897b376087SLuiz Capitulino 15907b376087SLuiz Capitulino if (WEXITSTATUS(status)) { 159177dbc81bSMarkus Armbruster error_setg(errp, "child process has failed to suspend"); 15927b376087SLuiz Capitulino goto out; 15937b376087SLuiz Capitulino } 15947b376087SLuiz Capitulino 15957b376087SLuiz Capitulino out: 159611d0f125SLuiz Capitulino g_free(pmutils_path); 159711d0f125SLuiz Capitulino } 159811d0f125SLuiz Capitulino 159977dbc81bSMarkus Armbruster void qmp_guest_suspend_disk(Error **errp) 160011d0f125SLuiz Capitulino { 16010f230bf7SMarkus Armbruster Error *local_err = NULL; 16020f230bf7SMarkus Armbruster 16030f230bf7SMarkus Armbruster bios_supports_mode("pm-is-supported", "--hibernate", "disk", &local_err); 16040f230bf7SMarkus Armbruster if (local_err) { 16050f230bf7SMarkus Armbruster error_propagate(errp, local_err); 160611d0f125SLuiz Capitulino return; 160711d0f125SLuiz Capitulino } 160811d0f125SLuiz Capitulino 160977dbc81bSMarkus Armbruster guest_suspend("pm-hibernate", "disk", errp); 161011d0f125SLuiz Capitulino } 161111d0f125SLuiz Capitulino 161277dbc81bSMarkus Armbruster void qmp_guest_suspend_ram(Error **errp) 1613fbf42210SLuiz Capitulino { 16140f230bf7SMarkus Armbruster Error *local_err = NULL; 16150f230bf7SMarkus Armbruster 16160f230bf7SMarkus Armbruster bios_supports_mode("pm-is-supported", "--suspend", "mem", &local_err); 16170f230bf7SMarkus Armbruster if (local_err) { 16180f230bf7SMarkus Armbruster error_propagate(errp, local_err); 1619fbf42210SLuiz Capitulino return; 1620fbf42210SLuiz Capitulino } 1621fbf42210SLuiz Capitulino 162277dbc81bSMarkus Armbruster guest_suspend("pm-suspend", "mem", errp); 1623fbf42210SLuiz Capitulino } 1624fbf42210SLuiz Capitulino 162577dbc81bSMarkus Armbruster void qmp_guest_suspend_hybrid(Error **errp) 162695f4f404SLuiz Capitulino { 16270f230bf7SMarkus Armbruster Error *local_err = NULL; 16280f230bf7SMarkus Armbruster 16290f230bf7SMarkus Armbruster bios_supports_mode("pm-is-supported", "--suspend-hybrid", NULL, 16300f230bf7SMarkus Armbruster &local_err); 16310f230bf7SMarkus Armbruster if (local_err) { 16320f230bf7SMarkus Armbruster error_propagate(errp, local_err); 163395f4f404SLuiz Capitulino return; 163495f4f404SLuiz Capitulino } 163595f4f404SLuiz Capitulino 163677dbc81bSMarkus Armbruster guest_suspend("pm-suspend-hybrid", NULL, errp); 163795f4f404SLuiz Capitulino } 163895f4f404SLuiz Capitulino 16393424fc9fSMichal Privoznik static GuestNetworkInterfaceList * 16403424fc9fSMichal Privoznik guest_find_interface(GuestNetworkInterfaceList *head, 16413424fc9fSMichal Privoznik const char *name) 16423424fc9fSMichal Privoznik { 16433424fc9fSMichal Privoznik for (; head; head = head->next) { 16443424fc9fSMichal Privoznik if (strcmp(head->value->name, name) == 0) { 16453424fc9fSMichal Privoznik break; 16463424fc9fSMichal Privoznik } 16473424fc9fSMichal Privoznik } 16483424fc9fSMichal Privoznik 16493424fc9fSMichal Privoznik return head; 16503424fc9fSMichal Privoznik } 16513424fc9fSMichal Privoznik 16523424fc9fSMichal Privoznik /* 16533424fc9fSMichal Privoznik * Build information about guest interfaces 16543424fc9fSMichal Privoznik */ 16553424fc9fSMichal Privoznik GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp) 16563424fc9fSMichal Privoznik { 16573424fc9fSMichal Privoznik GuestNetworkInterfaceList *head = NULL, *cur_item = NULL; 16583424fc9fSMichal Privoznik struct ifaddrs *ifap, *ifa; 16593424fc9fSMichal Privoznik 16603424fc9fSMichal Privoznik if (getifaddrs(&ifap) < 0) { 1661878a0ae0SLuiz Capitulino error_setg_errno(errp, errno, "getifaddrs failed"); 16623424fc9fSMichal Privoznik goto error; 16633424fc9fSMichal Privoznik } 16643424fc9fSMichal Privoznik 16653424fc9fSMichal Privoznik for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 16663424fc9fSMichal Privoznik GuestNetworkInterfaceList *info; 16673424fc9fSMichal Privoznik GuestIpAddressList **address_list = NULL, *address_item = NULL; 16683424fc9fSMichal Privoznik char addr4[INET_ADDRSTRLEN]; 16693424fc9fSMichal Privoznik char addr6[INET6_ADDRSTRLEN]; 16703424fc9fSMichal Privoznik int sock; 16713424fc9fSMichal Privoznik struct ifreq ifr; 16723424fc9fSMichal Privoznik unsigned char *mac_addr; 16733424fc9fSMichal Privoznik void *p; 16743424fc9fSMichal Privoznik 16753424fc9fSMichal Privoznik g_debug("Processing %s interface", ifa->ifa_name); 16763424fc9fSMichal Privoznik 16773424fc9fSMichal Privoznik info = guest_find_interface(head, ifa->ifa_name); 16783424fc9fSMichal Privoznik 16793424fc9fSMichal Privoznik if (!info) { 16803424fc9fSMichal Privoznik info = g_malloc0(sizeof(*info)); 16813424fc9fSMichal Privoznik info->value = g_malloc0(sizeof(*info->value)); 16823424fc9fSMichal Privoznik info->value->name = g_strdup(ifa->ifa_name); 16833424fc9fSMichal Privoznik 16843424fc9fSMichal Privoznik if (!cur_item) { 16853424fc9fSMichal Privoznik head = cur_item = info; 16863424fc9fSMichal Privoznik } else { 16873424fc9fSMichal Privoznik cur_item->next = info; 16883424fc9fSMichal Privoznik cur_item = info; 16893424fc9fSMichal Privoznik } 16903424fc9fSMichal Privoznik } 16913424fc9fSMichal Privoznik 16923424fc9fSMichal Privoznik if (!info->value->has_hardware_address && 16933424fc9fSMichal Privoznik ifa->ifa_flags & SIOCGIFHWADDR) { 16943424fc9fSMichal Privoznik /* we haven't obtained HW address yet */ 16953424fc9fSMichal Privoznik sock = socket(PF_INET, SOCK_STREAM, 0); 16963424fc9fSMichal Privoznik if (sock == -1) { 1697878a0ae0SLuiz Capitulino error_setg_errno(errp, errno, "failed to create socket"); 16983424fc9fSMichal Privoznik goto error; 16993424fc9fSMichal Privoznik } 17003424fc9fSMichal Privoznik 17013424fc9fSMichal Privoznik memset(&ifr, 0, sizeof(ifr)); 17021ab516edSJim Meyering pstrcpy(ifr.ifr_name, IF_NAMESIZE, info->value->name); 17033424fc9fSMichal Privoznik if (ioctl(sock, SIOCGIFHWADDR, &ifr) == -1) { 1704878a0ae0SLuiz Capitulino error_setg_errno(errp, errno, 1705878a0ae0SLuiz Capitulino "failed to get MAC address of %s", 1706878a0ae0SLuiz Capitulino ifa->ifa_name); 170710a2158fSMarkus Armbruster close(sock); 17083424fc9fSMichal Privoznik goto error; 17093424fc9fSMichal Privoznik } 17103424fc9fSMichal Privoznik 171110a2158fSMarkus Armbruster close(sock); 17123424fc9fSMichal Privoznik mac_addr = (unsigned char *) &ifr.ifr_hwaddr.sa_data; 17133424fc9fSMichal Privoznik 1714e4ada482SStefan Weil info->value->hardware_address = 1715e4ada482SStefan Weil g_strdup_printf("%02x:%02x:%02x:%02x:%02x:%02x", 17163424fc9fSMichal Privoznik (int) mac_addr[0], (int) mac_addr[1], 17173424fc9fSMichal Privoznik (int) mac_addr[2], (int) mac_addr[3], 1718e4ada482SStefan Weil (int) mac_addr[4], (int) mac_addr[5]); 17193424fc9fSMichal Privoznik 17203424fc9fSMichal Privoznik info->value->has_hardware_address = true; 17213424fc9fSMichal Privoznik } 17223424fc9fSMichal Privoznik 17233424fc9fSMichal Privoznik if (ifa->ifa_addr && 17243424fc9fSMichal Privoznik ifa->ifa_addr->sa_family == AF_INET) { 17253424fc9fSMichal Privoznik /* interface with IPv4 address */ 17263424fc9fSMichal Privoznik p = &((struct sockaddr_in *)ifa->ifa_addr)->sin_addr; 17273424fc9fSMichal Privoznik if (!inet_ntop(AF_INET, p, addr4, sizeof(addr4))) { 1728878a0ae0SLuiz Capitulino error_setg_errno(errp, errno, "inet_ntop failed"); 17293424fc9fSMichal Privoznik goto error; 17303424fc9fSMichal Privoznik } 17313424fc9fSMichal Privoznik 173210a2158fSMarkus Armbruster address_item = g_malloc0(sizeof(*address_item)); 173310a2158fSMarkus Armbruster address_item->value = g_malloc0(sizeof(*address_item->value)); 17343424fc9fSMichal Privoznik address_item->value->ip_address = g_strdup(addr4); 17353424fc9fSMichal Privoznik address_item->value->ip_address_type = GUEST_IP_ADDRESS_TYPE_IPV4; 17363424fc9fSMichal Privoznik 17373424fc9fSMichal Privoznik if (ifa->ifa_netmask) { 17383424fc9fSMichal Privoznik /* Count the number of set bits in netmask. 17393424fc9fSMichal Privoznik * This is safe as '1' and '0' cannot be shuffled in netmask. */ 17403424fc9fSMichal Privoznik p = &((struct sockaddr_in *)ifa->ifa_netmask)->sin_addr; 17413424fc9fSMichal Privoznik address_item->value->prefix = ctpop32(((uint32_t *) p)[0]); 17423424fc9fSMichal Privoznik } 17433424fc9fSMichal Privoznik } else if (ifa->ifa_addr && 17443424fc9fSMichal Privoznik ifa->ifa_addr->sa_family == AF_INET6) { 17453424fc9fSMichal Privoznik /* interface with IPv6 address */ 17463424fc9fSMichal Privoznik p = &((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_addr; 17473424fc9fSMichal Privoznik if (!inet_ntop(AF_INET6, p, addr6, sizeof(addr6))) { 1748878a0ae0SLuiz Capitulino error_setg_errno(errp, errno, "inet_ntop failed"); 17493424fc9fSMichal Privoznik goto error; 17503424fc9fSMichal Privoznik } 17513424fc9fSMichal Privoznik 175210a2158fSMarkus Armbruster address_item = g_malloc0(sizeof(*address_item)); 175310a2158fSMarkus Armbruster address_item->value = g_malloc0(sizeof(*address_item->value)); 17543424fc9fSMichal Privoznik address_item->value->ip_address = g_strdup(addr6); 17553424fc9fSMichal Privoznik address_item->value->ip_address_type = GUEST_IP_ADDRESS_TYPE_IPV6; 17563424fc9fSMichal Privoznik 17573424fc9fSMichal Privoznik if (ifa->ifa_netmask) { 17583424fc9fSMichal Privoznik /* Count the number of set bits in netmask. 17593424fc9fSMichal Privoznik * This is safe as '1' and '0' cannot be shuffled in netmask. */ 17603424fc9fSMichal Privoznik p = &((struct sockaddr_in6 *)ifa->ifa_netmask)->sin6_addr; 17613424fc9fSMichal Privoznik address_item->value->prefix = 17623424fc9fSMichal Privoznik ctpop32(((uint32_t *) p)[0]) + 17633424fc9fSMichal Privoznik ctpop32(((uint32_t *) p)[1]) + 17643424fc9fSMichal Privoznik ctpop32(((uint32_t *) p)[2]) + 17653424fc9fSMichal Privoznik ctpop32(((uint32_t *) p)[3]); 17663424fc9fSMichal Privoznik } 17673424fc9fSMichal Privoznik } 17683424fc9fSMichal Privoznik 17693424fc9fSMichal Privoznik if (!address_item) { 17703424fc9fSMichal Privoznik continue; 17713424fc9fSMichal Privoznik } 17723424fc9fSMichal Privoznik 17733424fc9fSMichal Privoznik address_list = &info->value->ip_addresses; 17743424fc9fSMichal Privoznik 17753424fc9fSMichal Privoznik while (*address_list && (*address_list)->next) { 17763424fc9fSMichal Privoznik address_list = &(*address_list)->next; 17773424fc9fSMichal Privoznik } 17783424fc9fSMichal Privoznik 17793424fc9fSMichal Privoznik if (!*address_list) { 17803424fc9fSMichal Privoznik *address_list = address_item; 17813424fc9fSMichal Privoznik } else { 17823424fc9fSMichal Privoznik (*address_list)->next = address_item; 17833424fc9fSMichal Privoznik } 17843424fc9fSMichal Privoznik 17853424fc9fSMichal Privoznik info->value->has_ip_addresses = true; 17863424fc9fSMichal Privoznik 17873424fc9fSMichal Privoznik 17883424fc9fSMichal Privoznik } 17893424fc9fSMichal Privoznik 17903424fc9fSMichal Privoznik freeifaddrs(ifap); 17913424fc9fSMichal Privoznik return head; 17923424fc9fSMichal Privoznik 17933424fc9fSMichal Privoznik error: 17943424fc9fSMichal Privoznik freeifaddrs(ifap); 17953424fc9fSMichal Privoznik qapi_free_GuestNetworkInterfaceList(head); 17963424fc9fSMichal Privoznik return NULL; 17973424fc9fSMichal Privoznik } 17983424fc9fSMichal Privoznik 179977dbc81bSMarkus Armbruster #define SYSCONF_EXACT(name, errp) sysconf_exact((name), #name, (errp)) 1800d2baff62SLaszlo Ersek 180177dbc81bSMarkus Armbruster static long sysconf_exact(int name, const char *name_str, Error **errp) 1802d2baff62SLaszlo Ersek { 1803d2baff62SLaszlo Ersek long ret; 1804d2baff62SLaszlo Ersek 1805d2baff62SLaszlo Ersek errno = 0; 1806d2baff62SLaszlo Ersek ret = sysconf(name); 1807d2baff62SLaszlo Ersek if (ret == -1) { 1808d2baff62SLaszlo Ersek if (errno == 0) { 180977dbc81bSMarkus Armbruster error_setg(errp, "sysconf(%s): value indefinite", name_str); 1810d2baff62SLaszlo Ersek } else { 181177dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "sysconf(%s)", name_str); 1812d2baff62SLaszlo Ersek } 1813d2baff62SLaszlo Ersek } 1814d2baff62SLaszlo Ersek return ret; 1815d2baff62SLaszlo Ersek } 1816d2baff62SLaszlo Ersek 1817d2baff62SLaszlo Ersek /* Transfer online/offline status between @vcpu and the guest system. 1818d2baff62SLaszlo Ersek * 1819d2baff62SLaszlo Ersek * On input either @errp or *@errp must be NULL. 1820d2baff62SLaszlo Ersek * 1821d2baff62SLaszlo Ersek * In system-to-@vcpu direction, the following @vcpu fields are accessed: 1822d2baff62SLaszlo Ersek * - R: vcpu->logical_id 1823d2baff62SLaszlo Ersek * - W: vcpu->online 1824d2baff62SLaszlo Ersek * - W: vcpu->can_offline 1825d2baff62SLaszlo Ersek * 1826d2baff62SLaszlo Ersek * In @vcpu-to-system direction, the following @vcpu fields are accessed: 1827d2baff62SLaszlo Ersek * - R: vcpu->logical_id 1828d2baff62SLaszlo Ersek * - R: vcpu->online 1829d2baff62SLaszlo Ersek * 1830d2baff62SLaszlo Ersek * Written members remain unmodified on error. 1831d2baff62SLaszlo Ersek */ 1832d2baff62SLaszlo Ersek static void transfer_vcpu(GuestLogicalProcessor *vcpu, bool sys2vcpu, 1833d2baff62SLaszlo Ersek Error **errp) 1834d2baff62SLaszlo Ersek { 1835d2baff62SLaszlo Ersek char *dirpath; 1836d2baff62SLaszlo Ersek int dirfd; 1837d2baff62SLaszlo Ersek 1838d2baff62SLaszlo Ersek dirpath = g_strdup_printf("/sys/devices/system/cpu/cpu%" PRId64 "/", 1839d2baff62SLaszlo Ersek vcpu->logical_id); 1840d2baff62SLaszlo Ersek dirfd = open(dirpath, O_RDONLY | O_DIRECTORY); 1841d2baff62SLaszlo Ersek if (dirfd == -1) { 1842d2baff62SLaszlo Ersek error_setg_errno(errp, errno, "open(\"%s\")", dirpath); 1843d2baff62SLaszlo Ersek } else { 1844d2baff62SLaszlo Ersek static const char fn[] = "online"; 1845d2baff62SLaszlo Ersek int fd; 1846d2baff62SLaszlo Ersek int res; 1847d2baff62SLaszlo Ersek 1848d2baff62SLaszlo Ersek fd = openat(dirfd, fn, sys2vcpu ? O_RDONLY : O_RDWR); 1849d2baff62SLaszlo Ersek if (fd == -1) { 1850d2baff62SLaszlo Ersek if (errno != ENOENT) { 1851d2baff62SLaszlo Ersek error_setg_errno(errp, errno, "open(\"%s/%s\")", dirpath, fn); 1852d2baff62SLaszlo Ersek } else if (sys2vcpu) { 1853d2baff62SLaszlo Ersek vcpu->online = true; 1854d2baff62SLaszlo Ersek vcpu->can_offline = false; 1855d2baff62SLaszlo Ersek } else if (!vcpu->online) { 1856d2baff62SLaszlo Ersek error_setg(errp, "logical processor #%" PRId64 " can't be " 1857d2baff62SLaszlo Ersek "offlined", vcpu->logical_id); 1858d2baff62SLaszlo Ersek } /* otherwise pretend successful re-onlining */ 1859d2baff62SLaszlo Ersek } else { 1860d2baff62SLaszlo Ersek unsigned char status; 1861d2baff62SLaszlo Ersek 1862d2baff62SLaszlo Ersek res = pread(fd, &status, 1, 0); 1863d2baff62SLaszlo Ersek if (res == -1) { 1864d2baff62SLaszlo Ersek error_setg_errno(errp, errno, "pread(\"%s/%s\")", dirpath, fn); 1865d2baff62SLaszlo Ersek } else if (res == 0) { 1866d2baff62SLaszlo Ersek error_setg(errp, "pread(\"%s/%s\"): unexpected EOF", dirpath, 1867d2baff62SLaszlo Ersek fn); 1868d2baff62SLaszlo Ersek } else if (sys2vcpu) { 1869d2baff62SLaszlo Ersek vcpu->online = (status != '0'); 1870d2baff62SLaszlo Ersek vcpu->can_offline = true; 1871d2baff62SLaszlo Ersek } else if (vcpu->online != (status != '0')) { 1872d2baff62SLaszlo Ersek status = '0' + vcpu->online; 1873d2baff62SLaszlo Ersek if (pwrite(fd, &status, 1, 0) == -1) { 1874d2baff62SLaszlo Ersek error_setg_errno(errp, errno, "pwrite(\"%s/%s\")", dirpath, 1875d2baff62SLaszlo Ersek fn); 1876d2baff62SLaszlo Ersek } 1877d2baff62SLaszlo Ersek } /* otherwise pretend successful re-(on|off)-lining */ 1878d2baff62SLaszlo Ersek 1879d2baff62SLaszlo Ersek res = close(fd); 1880d2baff62SLaszlo Ersek g_assert(res == 0); 1881d2baff62SLaszlo Ersek } 1882d2baff62SLaszlo Ersek 1883d2baff62SLaszlo Ersek res = close(dirfd); 1884d2baff62SLaszlo Ersek g_assert(res == 0); 1885d2baff62SLaszlo Ersek } 1886d2baff62SLaszlo Ersek 1887d2baff62SLaszlo Ersek g_free(dirpath); 1888d2baff62SLaszlo Ersek } 1889d2baff62SLaszlo Ersek 1890d2baff62SLaszlo Ersek GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp) 1891d2baff62SLaszlo Ersek { 1892d2baff62SLaszlo Ersek int64_t current; 1893d2baff62SLaszlo Ersek GuestLogicalProcessorList *head, **link; 1894d2baff62SLaszlo Ersek long sc_max; 1895d2baff62SLaszlo Ersek Error *local_err = NULL; 1896d2baff62SLaszlo Ersek 1897d2baff62SLaszlo Ersek current = 0; 1898d2baff62SLaszlo Ersek head = NULL; 1899d2baff62SLaszlo Ersek link = &head; 1900d2baff62SLaszlo Ersek sc_max = SYSCONF_EXACT(_SC_NPROCESSORS_CONF, &local_err); 1901d2baff62SLaszlo Ersek 1902d2baff62SLaszlo Ersek while (local_err == NULL && current < sc_max) { 1903d2baff62SLaszlo Ersek GuestLogicalProcessor *vcpu; 1904d2baff62SLaszlo Ersek GuestLogicalProcessorList *entry; 1905d2baff62SLaszlo Ersek 1906d2baff62SLaszlo Ersek vcpu = g_malloc0(sizeof *vcpu); 1907d2baff62SLaszlo Ersek vcpu->logical_id = current++; 1908d2baff62SLaszlo Ersek vcpu->has_can_offline = true; /* lolspeak ftw */ 1909d2baff62SLaszlo Ersek transfer_vcpu(vcpu, true, &local_err); 1910d2baff62SLaszlo Ersek 1911d2baff62SLaszlo Ersek entry = g_malloc0(sizeof *entry); 1912d2baff62SLaszlo Ersek entry->value = vcpu; 1913d2baff62SLaszlo Ersek 1914d2baff62SLaszlo Ersek *link = entry; 1915d2baff62SLaszlo Ersek link = &entry->next; 1916d2baff62SLaszlo Ersek } 1917d2baff62SLaszlo Ersek 1918d2baff62SLaszlo Ersek if (local_err == NULL) { 1919d2baff62SLaszlo Ersek /* there's no guest with zero VCPUs */ 1920d2baff62SLaszlo Ersek g_assert(head != NULL); 1921d2baff62SLaszlo Ersek return head; 1922d2baff62SLaszlo Ersek } 1923d2baff62SLaszlo Ersek 1924d2baff62SLaszlo Ersek qapi_free_GuestLogicalProcessorList(head); 1925d2baff62SLaszlo Ersek error_propagate(errp, local_err); 1926d2baff62SLaszlo Ersek return NULL; 1927d2baff62SLaszlo Ersek } 1928d2baff62SLaszlo Ersek 1929cbb65fc2SLaszlo Ersek int64_t qmp_guest_set_vcpus(GuestLogicalProcessorList *vcpus, Error **errp) 1930cbb65fc2SLaszlo Ersek { 1931cbb65fc2SLaszlo Ersek int64_t processed; 1932cbb65fc2SLaszlo Ersek Error *local_err = NULL; 1933cbb65fc2SLaszlo Ersek 1934cbb65fc2SLaszlo Ersek processed = 0; 1935cbb65fc2SLaszlo Ersek while (vcpus != NULL) { 1936cbb65fc2SLaszlo Ersek transfer_vcpu(vcpus->value, false, &local_err); 1937cbb65fc2SLaszlo Ersek if (local_err != NULL) { 1938cbb65fc2SLaszlo Ersek break; 1939cbb65fc2SLaszlo Ersek } 1940cbb65fc2SLaszlo Ersek ++processed; 1941cbb65fc2SLaszlo Ersek vcpus = vcpus->next; 1942cbb65fc2SLaszlo Ersek } 1943cbb65fc2SLaszlo Ersek 1944cbb65fc2SLaszlo Ersek if (local_err != NULL) { 1945cbb65fc2SLaszlo Ersek if (processed == 0) { 1946cbb65fc2SLaszlo Ersek error_propagate(errp, local_err); 1947cbb65fc2SLaszlo Ersek } else { 1948cbb65fc2SLaszlo Ersek error_free(local_err); 1949cbb65fc2SLaszlo Ersek } 1950cbb65fc2SLaszlo Ersek } 1951cbb65fc2SLaszlo Ersek 1952cbb65fc2SLaszlo Ersek return processed; 1953cbb65fc2SLaszlo Ersek } 1954cbb65fc2SLaszlo Ersek 1955215a2771SDaniel P. Berrange void qmp_guest_set_user_password(const char *username, 1956215a2771SDaniel P. Berrange const char *password, 1957215a2771SDaniel P. Berrange bool crypted, 1958215a2771SDaniel P. Berrange Error **errp) 1959215a2771SDaniel P. Berrange { 1960215a2771SDaniel P. Berrange Error *local_err = NULL; 1961215a2771SDaniel P. Berrange char *passwd_path = NULL; 1962215a2771SDaniel P. Berrange pid_t pid; 1963215a2771SDaniel P. Berrange int status; 1964215a2771SDaniel P. Berrange int datafd[2] = { -1, -1 }; 1965215a2771SDaniel P. Berrange char *rawpasswddata = NULL; 1966215a2771SDaniel P. Berrange size_t rawpasswdlen; 1967215a2771SDaniel P. Berrange char *chpasswddata = NULL; 1968215a2771SDaniel P. Berrange size_t chpasswdlen; 1969215a2771SDaniel P. Berrange 1970920639caSDaniel P. Berrange rawpasswddata = (char *)qbase64_decode(password, -1, &rawpasswdlen, errp); 1971920639caSDaniel P. Berrange if (!rawpasswddata) { 1972920639caSDaniel P. Berrange return; 1973920639caSDaniel P. Berrange } 1974215a2771SDaniel P. Berrange rawpasswddata = g_renew(char, rawpasswddata, rawpasswdlen + 1); 1975215a2771SDaniel P. Berrange rawpasswddata[rawpasswdlen] = '\0'; 1976215a2771SDaniel P. Berrange 1977215a2771SDaniel P. Berrange if (strchr(rawpasswddata, '\n')) { 1978215a2771SDaniel P. Berrange error_setg(errp, "forbidden characters in raw password"); 1979215a2771SDaniel P. Berrange goto out; 1980215a2771SDaniel P. Berrange } 1981215a2771SDaniel P. Berrange 1982215a2771SDaniel P. Berrange if (strchr(username, '\n') || 1983215a2771SDaniel P. Berrange strchr(username, ':')) { 1984215a2771SDaniel P. Berrange error_setg(errp, "forbidden characters in username"); 1985215a2771SDaniel P. Berrange goto out; 1986215a2771SDaniel P. Berrange } 1987215a2771SDaniel P. Berrange 1988215a2771SDaniel P. Berrange chpasswddata = g_strdup_printf("%s:%s\n", username, rawpasswddata); 1989215a2771SDaniel P. Berrange chpasswdlen = strlen(chpasswddata); 1990215a2771SDaniel P. Berrange 1991215a2771SDaniel P. Berrange passwd_path = g_find_program_in_path("chpasswd"); 1992215a2771SDaniel P. Berrange 1993215a2771SDaniel P. Berrange if (!passwd_path) { 1994215a2771SDaniel P. Berrange error_setg(errp, "cannot find 'passwd' program in PATH"); 1995215a2771SDaniel P. Berrange goto out; 1996215a2771SDaniel P. Berrange } 1997215a2771SDaniel P. Berrange 1998215a2771SDaniel P. Berrange if (pipe(datafd) < 0) { 1999215a2771SDaniel P. Berrange error_setg(errp, "cannot create pipe FDs"); 2000215a2771SDaniel P. Berrange goto out; 2001215a2771SDaniel P. Berrange } 2002215a2771SDaniel P. Berrange 2003215a2771SDaniel P. Berrange pid = fork(); 2004215a2771SDaniel P. Berrange if (pid == 0) { 2005215a2771SDaniel P. Berrange close(datafd[1]); 2006215a2771SDaniel P. Berrange /* child */ 2007215a2771SDaniel P. Berrange setsid(); 2008215a2771SDaniel P. Berrange dup2(datafd[0], 0); 2009215a2771SDaniel P. Berrange reopen_fd_to_null(1); 2010215a2771SDaniel P. Berrange reopen_fd_to_null(2); 2011215a2771SDaniel P. Berrange 2012215a2771SDaniel P. Berrange if (crypted) { 2013215a2771SDaniel P. Berrange execle(passwd_path, "chpasswd", "-e", NULL, environ); 2014215a2771SDaniel P. Berrange } else { 2015215a2771SDaniel P. Berrange execle(passwd_path, "chpasswd", NULL, environ); 2016215a2771SDaniel P. Berrange } 2017215a2771SDaniel P. Berrange _exit(EXIT_FAILURE); 2018215a2771SDaniel P. Berrange } else if (pid < 0) { 2019215a2771SDaniel P. Berrange error_setg_errno(errp, errno, "failed to create child process"); 2020215a2771SDaniel P. Berrange goto out; 2021215a2771SDaniel P. Berrange } 2022215a2771SDaniel P. Berrange close(datafd[0]); 2023215a2771SDaniel P. Berrange datafd[0] = -1; 2024215a2771SDaniel P. Berrange 2025215a2771SDaniel P. Berrange if (qemu_write_full(datafd[1], chpasswddata, chpasswdlen) != chpasswdlen) { 2026215a2771SDaniel P. Berrange error_setg_errno(errp, errno, "cannot write new account password"); 2027215a2771SDaniel P. Berrange goto out; 2028215a2771SDaniel P. Berrange } 2029215a2771SDaniel P. Berrange close(datafd[1]); 2030215a2771SDaniel P. Berrange datafd[1] = -1; 2031215a2771SDaniel P. Berrange 2032215a2771SDaniel P. Berrange ga_wait_child(pid, &status, &local_err); 2033215a2771SDaniel P. Berrange if (local_err) { 2034215a2771SDaniel P. Berrange error_propagate(errp, local_err); 2035215a2771SDaniel P. Berrange goto out; 2036215a2771SDaniel P. Berrange } 2037215a2771SDaniel P. Berrange 2038215a2771SDaniel P. Berrange if (!WIFEXITED(status)) { 2039215a2771SDaniel P. Berrange error_setg(errp, "child process has terminated abnormally"); 2040215a2771SDaniel P. Berrange goto out; 2041215a2771SDaniel P. Berrange } 2042215a2771SDaniel P. Berrange 2043215a2771SDaniel P. Berrange if (WEXITSTATUS(status)) { 2044215a2771SDaniel P. Berrange error_setg(errp, "child process has failed to set user password"); 2045215a2771SDaniel P. Berrange goto out; 2046215a2771SDaniel P. Berrange } 2047215a2771SDaniel P. Berrange 2048215a2771SDaniel P. Berrange out: 2049215a2771SDaniel P. Berrange g_free(chpasswddata); 2050215a2771SDaniel P. Berrange g_free(rawpasswddata); 2051215a2771SDaniel P. Berrange g_free(passwd_path); 2052215a2771SDaniel P. Berrange if (datafd[0] != -1) { 2053215a2771SDaniel P. Berrange close(datafd[0]); 2054215a2771SDaniel P. Berrange } 2055215a2771SDaniel P. Berrange if (datafd[1] != -1) { 2056215a2771SDaniel P. Berrange close(datafd[1]); 2057215a2771SDaniel P. Berrange } 2058215a2771SDaniel P. Berrange } 2059215a2771SDaniel P. Berrange 2060bd240fcaSzhanghailiang static void ga_read_sysfs_file(int dirfd, const char *pathname, char *buf, 2061bd240fcaSzhanghailiang int size, Error **errp) 2062bd240fcaSzhanghailiang { 2063bd240fcaSzhanghailiang int fd; 2064bd240fcaSzhanghailiang int res; 2065bd240fcaSzhanghailiang 2066bd240fcaSzhanghailiang errno = 0; 2067bd240fcaSzhanghailiang fd = openat(dirfd, pathname, O_RDONLY); 2068bd240fcaSzhanghailiang if (fd == -1) { 2069bd240fcaSzhanghailiang error_setg_errno(errp, errno, "open sysfs file \"%s\"", pathname); 2070bd240fcaSzhanghailiang return; 2071bd240fcaSzhanghailiang } 2072bd240fcaSzhanghailiang 2073bd240fcaSzhanghailiang res = pread(fd, buf, size, 0); 2074bd240fcaSzhanghailiang if (res == -1) { 2075bd240fcaSzhanghailiang error_setg_errno(errp, errno, "pread sysfs file \"%s\"", pathname); 2076bd240fcaSzhanghailiang } else if (res == 0) { 2077bd240fcaSzhanghailiang error_setg(errp, "pread sysfs file \"%s\": unexpected EOF", pathname); 2078bd240fcaSzhanghailiang } 2079bd240fcaSzhanghailiang close(fd); 2080bd240fcaSzhanghailiang } 2081bd240fcaSzhanghailiang 2082bd240fcaSzhanghailiang static void ga_write_sysfs_file(int dirfd, const char *pathname, 2083bd240fcaSzhanghailiang const char *buf, int size, Error **errp) 2084bd240fcaSzhanghailiang { 2085bd240fcaSzhanghailiang int fd; 2086bd240fcaSzhanghailiang 2087bd240fcaSzhanghailiang errno = 0; 2088bd240fcaSzhanghailiang fd = openat(dirfd, pathname, O_WRONLY); 2089bd240fcaSzhanghailiang if (fd == -1) { 2090bd240fcaSzhanghailiang error_setg_errno(errp, errno, "open sysfs file \"%s\"", pathname); 2091bd240fcaSzhanghailiang return; 2092bd240fcaSzhanghailiang } 2093bd240fcaSzhanghailiang 2094bd240fcaSzhanghailiang if (pwrite(fd, buf, size, 0) == -1) { 2095bd240fcaSzhanghailiang error_setg_errno(errp, errno, "pwrite sysfs file \"%s\"", pathname); 2096bd240fcaSzhanghailiang } 2097bd240fcaSzhanghailiang 2098bd240fcaSzhanghailiang close(fd); 2099bd240fcaSzhanghailiang } 2100bd240fcaSzhanghailiang 2101bd240fcaSzhanghailiang /* Transfer online/offline status between @mem_blk and the guest system. 2102bd240fcaSzhanghailiang * 2103bd240fcaSzhanghailiang * On input either @errp or *@errp must be NULL. 2104bd240fcaSzhanghailiang * 2105bd240fcaSzhanghailiang * In system-to-@mem_blk direction, the following @mem_blk fields are accessed: 2106bd240fcaSzhanghailiang * - R: mem_blk->phys_index 2107bd240fcaSzhanghailiang * - W: mem_blk->online 2108bd240fcaSzhanghailiang * - W: mem_blk->can_offline 2109bd240fcaSzhanghailiang * 2110bd240fcaSzhanghailiang * In @mem_blk-to-system direction, the following @mem_blk fields are accessed: 2111bd240fcaSzhanghailiang * - R: mem_blk->phys_index 2112bd240fcaSzhanghailiang * - R: mem_blk->online 2113bd240fcaSzhanghailiang *- R: mem_blk->can_offline 2114bd240fcaSzhanghailiang * Written members remain unmodified on error. 2115bd240fcaSzhanghailiang */ 2116bd240fcaSzhanghailiang static void transfer_memory_block(GuestMemoryBlock *mem_blk, bool sys2memblk, 2117bd240fcaSzhanghailiang GuestMemoryBlockResponse *result, 2118bd240fcaSzhanghailiang Error **errp) 2119bd240fcaSzhanghailiang { 2120bd240fcaSzhanghailiang char *dirpath; 2121bd240fcaSzhanghailiang int dirfd; 2122bd240fcaSzhanghailiang char *status; 2123bd240fcaSzhanghailiang Error *local_err = NULL; 2124bd240fcaSzhanghailiang 2125bd240fcaSzhanghailiang if (!sys2memblk) { 2126bd240fcaSzhanghailiang DIR *dp; 2127bd240fcaSzhanghailiang 2128bd240fcaSzhanghailiang if (!result) { 2129bd240fcaSzhanghailiang error_setg(errp, "Internal error, 'result' should not be NULL"); 2130bd240fcaSzhanghailiang return; 2131bd240fcaSzhanghailiang } 2132bd240fcaSzhanghailiang errno = 0; 2133bd240fcaSzhanghailiang dp = opendir("/sys/devices/system/memory/"); 2134bd240fcaSzhanghailiang /* if there is no 'memory' directory in sysfs, 2135bd240fcaSzhanghailiang * we think this VM does not support online/offline memory block, 2136bd240fcaSzhanghailiang * any other solution? 2137bd240fcaSzhanghailiang */ 2138bd240fcaSzhanghailiang if (!dp && errno == ENOENT) { 2139bd240fcaSzhanghailiang result->response = 2140bd240fcaSzhanghailiang GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_NOT_SUPPORTED; 2141bd240fcaSzhanghailiang goto out1; 2142bd240fcaSzhanghailiang } 2143bd240fcaSzhanghailiang closedir(dp); 2144bd240fcaSzhanghailiang } 2145bd240fcaSzhanghailiang 2146bd240fcaSzhanghailiang dirpath = g_strdup_printf("/sys/devices/system/memory/memory%" PRId64 "/", 2147bd240fcaSzhanghailiang mem_blk->phys_index); 2148bd240fcaSzhanghailiang dirfd = open(dirpath, O_RDONLY | O_DIRECTORY); 2149bd240fcaSzhanghailiang if (dirfd == -1) { 2150bd240fcaSzhanghailiang if (sys2memblk) { 2151bd240fcaSzhanghailiang error_setg_errno(errp, errno, "open(\"%s\")", dirpath); 2152bd240fcaSzhanghailiang } else { 2153bd240fcaSzhanghailiang if (errno == ENOENT) { 2154bd240fcaSzhanghailiang result->response = GUEST_MEMORY_BLOCK_RESPONSE_TYPE_NOT_FOUND; 2155bd240fcaSzhanghailiang } else { 2156bd240fcaSzhanghailiang result->response = 2157bd240fcaSzhanghailiang GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_FAILED; 2158bd240fcaSzhanghailiang } 2159bd240fcaSzhanghailiang } 2160bd240fcaSzhanghailiang g_free(dirpath); 2161bd240fcaSzhanghailiang goto out1; 2162bd240fcaSzhanghailiang } 2163bd240fcaSzhanghailiang g_free(dirpath); 2164bd240fcaSzhanghailiang 2165bd240fcaSzhanghailiang status = g_malloc0(10); 2166bd240fcaSzhanghailiang ga_read_sysfs_file(dirfd, "state", status, 10, &local_err); 2167bd240fcaSzhanghailiang if (local_err) { 2168bd240fcaSzhanghailiang /* treat with sysfs file that not exist in old kernel */ 2169bd240fcaSzhanghailiang if (errno == ENOENT) { 2170bd240fcaSzhanghailiang error_free(local_err); 2171bd240fcaSzhanghailiang if (sys2memblk) { 2172bd240fcaSzhanghailiang mem_blk->online = true; 2173bd240fcaSzhanghailiang mem_blk->can_offline = false; 2174bd240fcaSzhanghailiang } else if (!mem_blk->online) { 2175bd240fcaSzhanghailiang result->response = 2176bd240fcaSzhanghailiang GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_NOT_SUPPORTED; 2177bd240fcaSzhanghailiang } 2178bd240fcaSzhanghailiang } else { 2179bd240fcaSzhanghailiang if (sys2memblk) { 2180bd240fcaSzhanghailiang error_propagate(errp, local_err); 2181bd240fcaSzhanghailiang } else { 2182bd240fcaSzhanghailiang result->response = 2183bd240fcaSzhanghailiang GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_FAILED; 2184bd240fcaSzhanghailiang } 2185bd240fcaSzhanghailiang } 2186bd240fcaSzhanghailiang goto out2; 2187bd240fcaSzhanghailiang } 2188bd240fcaSzhanghailiang 2189bd240fcaSzhanghailiang if (sys2memblk) { 2190bd240fcaSzhanghailiang char removable = '0'; 2191bd240fcaSzhanghailiang 2192bd240fcaSzhanghailiang mem_blk->online = (strncmp(status, "online", 6) == 0); 2193bd240fcaSzhanghailiang 2194bd240fcaSzhanghailiang ga_read_sysfs_file(dirfd, "removable", &removable, 1, &local_err); 2195bd240fcaSzhanghailiang if (local_err) { 219667cc32ebSVeres Lajos /* if no 'removable' file, it doesn't support offline mem blk */ 2197bd240fcaSzhanghailiang if (errno == ENOENT) { 2198bd240fcaSzhanghailiang error_free(local_err); 2199bd240fcaSzhanghailiang mem_blk->can_offline = false; 2200bd240fcaSzhanghailiang } else { 2201bd240fcaSzhanghailiang error_propagate(errp, local_err); 2202bd240fcaSzhanghailiang } 2203bd240fcaSzhanghailiang } else { 2204bd240fcaSzhanghailiang mem_blk->can_offline = (removable != '0'); 2205bd240fcaSzhanghailiang } 2206bd240fcaSzhanghailiang } else { 2207bd240fcaSzhanghailiang if (mem_blk->online != (strncmp(status, "online", 6) == 0)) { 2208bd240fcaSzhanghailiang char *new_state = mem_blk->online ? g_strdup("online") : 2209bd240fcaSzhanghailiang g_strdup("offline"); 2210bd240fcaSzhanghailiang 2211bd240fcaSzhanghailiang ga_write_sysfs_file(dirfd, "state", new_state, strlen(new_state), 2212bd240fcaSzhanghailiang &local_err); 2213bd240fcaSzhanghailiang g_free(new_state); 2214bd240fcaSzhanghailiang if (local_err) { 2215bd240fcaSzhanghailiang error_free(local_err); 2216bd240fcaSzhanghailiang result->response = 2217bd240fcaSzhanghailiang GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_FAILED; 2218bd240fcaSzhanghailiang goto out2; 2219bd240fcaSzhanghailiang } 2220bd240fcaSzhanghailiang 2221bd240fcaSzhanghailiang result->response = GUEST_MEMORY_BLOCK_RESPONSE_TYPE_SUCCESS; 2222bd240fcaSzhanghailiang result->has_error_code = false; 2223bd240fcaSzhanghailiang } /* otherwise pretend successful re-(on|off)-lining */ 2224bd240fcaSzhanghailiang } 2225bd240fcaSzhanghailiang g_free(status); 2226bd240fcaSzhanghailiang close(dirfd); 2227bd240fcaSzhanghailiang return; 2228bd240fcaSzhanghailiang 2229bd240fcaSzhanghailiang out2: 2230bd240fcaSzhanghailiang g_free(status); 2231bd240fcaSzhanghailiang close(dirfd); 2232bd240fcaSzhanghailiang out1: 2233bd240fcaSzhanghailiang if (!sys2memblk) { 2234bd240fcaSzhanghailiang result->has_error_code = true; 2235bd240fcaSzhanghailiang result->error_code = errno; 2236bd240fcaSzhanghailiang } 2237bd240fcaSzhanghailiang } 2238bd240fcaSzhanghailiang 2239a065aaa9Szhanghailiang GuestMemoryBlockList *qmp_guest_get_memory_blocks(Error **errp) 2240a065aaa9Szhanghailiang { 2241bd240fcaSzhanghailiang GuestMemoryBlockList *head, **link; 2242bd240fcaSzhanghailiang Error *local_err = NULL; 2243bd240fcaSzhanghailiang struct dirent *de; 2244bd240fcaSzhanghailiang DIR *dp; 2245bd240fcaSzhanghailiang 2246bd240fcaSzhanghailiang head = NULL; 2247bd240fcaSzhanghailiang link = &head; 2248bd240fcaSzhanghailiang 2249bd240fcaSzhanghailiang dp = opendir("/sys/devices/system/memory/"); 2250bd240fcaSzhanghailiang if (!dp) { 2251f693fe6eSMichael Roth /* it's ok if this happens to be a system that doesn't expose 2252f693fe6eSMichael Roth * memory blocks via sysfs, but otherwise we should report 2253f693fe6eSMichael Roth * an error 2254f693fe6eSMichael Roth */ 2255f693fe6eSMichael Roth if (errno != ENOENT) { 2256bd240fcaSzhanghailiang error_setg_errno(errp, errno, "Can't open directory" 2257*9af9e0feSMarkus Armbruster "\"/sys/devices/system/memory/\""); 2258f693fe6eSMichael Roth } 2259bd240fcaSzhanghailiang return NULL; 2260bd240fcaSzhanghailiang } 2261bd240fcaSzhanghailiang 2262bd240fcaSzhanghailiang /* Note: the phys_index of memory block may be discontinuous, 2263bd240fcaSzhanghailiang * this is because a memblk is the unit of the Sparse Memory design, which 2264bd240fcaSzhanghailiang * allows discontinuous memory ranges (ex. NUMA), so here we should 2265bd240fcaSzhanghailiang * traverse the memory block directory. 2266bd240fcaSzhanghailiang */ 2267bd240fcaSzhanghailiang while ((de = readdir(dp)) != NULL) { 2268bd240fcaSzhanghailiang GuestMemoryBlock *mem_blk; 2269bd240fcaSzhanghailiang GuestMemoryBlockList *entry; 2270bd240fcaSzhanghailiang 2271bd240fcaSzhanghailiang if ((strncmp(de->d_name, "memory", 6) != 0) || 2272bd240fcaSzhanghailiang !(de->d_type & DT_DIR)) { 2273bd240fcaSzhanghailiang continue; 2274bd240fcaSzhanghailiang } 2275bd240fcaSzhanghailiang 2276bd240fcaSzhanghailiang mem_blk = g_malloc0(sizeof *mem_blk); 2277bd240fcaSzhanghailiang /* The d_name is "memoryXXX", phys_index is block id, same as XXX */ 2278bd240fcaSzhanghailiang mem_blk->phys_index = strtoul(&de->d_name[6], NULL, 10); 2279bd240fcaSzhanghailiang mem_blk->has_can_offline = true; /* lolspeak ftw */ 2280bd240fcaSzhanghailiang transfer_memory_block(mem_blk, true, NULL, &local_err); 2281bd240fcaSzhanghailiang 2282bd240fcaSzhanghailiang entry = g_malloc0(sizeof *entry); 2283bd240fcaSzhanghailiang entry->value = mem_blk; 2284bd240fcaSzhanghailiang 2285bd240fcaSzhanghailiang *link = entry; 2286bd240fcaSzhanghailiang link = &entry->next; 2287bd240fcaSzhanghailiang } 2288bd240fcaSzhanghailiang 2289bd240fcaSzhanghailiang closedir(dp); 2290bd240fcaSzhanghailiang if (local_err == NULL) { 2291bd240fcaSzhanghailiang /* there's no guest with zero memory blocks */ 2292bd240fcaSzhanghailiang if (head == NULL) { 2293bd240fcaSzhanghailiang error_setg(errp, "guest reported zero memory blocks!"); 2294bd240fcaSzhanghailiang } 2295bd240fcaSzhanghailiang return head; 2296bd240fcaSzhanghailiang } 2297bd240fcaSzhanghailiang 2298bd240fcaSzhanghailiang qapi_free_GuestMemoryBlockList(head); 2299bd240fcaSzhanghailiang error_propagate(errp, local_err); 2300a065aaa9Szhanghailiang return NULL; 2301a065aaa9Szhanghailiang } 2302a065aaa9Szhanghailiang 2303a065aaa9Szhanghailiang GuestMemoryBlockResponseList * 2304a065aaa9Szhanghailiang qmp_guest_set_memory_blocks(GuestMemoryBlockList *mem_blks, Error **errp) 2305a065aaa9Szhanghailiang { 230632ca7927Szhanghailiang GuestMemoryBlockResponseList *head, **link; 230732ca7927Szhanghailiang Error *local_err = NULL; 230832ca7927Szhanghailiang 230932ca7927Szhanghailiang head = NULL; 231032ca7927Szhanghailiang link = &head; 231132ca7927Szhanghailiang 231232ca7927Szhanghailiang while (mem_blks != NULL) { 231332ca7927Szhanghailiang GuestMemoryBlockResponse *result; 231432ca7927Szhanghailiang GuestMemoryBlockResponseList *entry; 231532ca7927Szhanghailiang GuestMemoryBlock *current_mem_blk = mem_blks->value; 231632ca7927Szhanghailiang 231732ca7927Szhanghailiang result = g_malloc0(sizeof(*result)); 231832ca7927Szhanghailiang result->phys_index = current_mem_blk->phys_index; 231932ca7927Szhanghailiang transfer_memory_block(current_mem_blk, false, result, &local_err); 232032ca7927Szhanghailiang if (local_err) { /* should never happen */ 232132ca7927Szhanghailiang goto err; 232232ca7927Szhanghailiang } 232332ca7927Szhanghailiang entry = g_malloc0(sizeof *entry); 232432ca7927Szhanghailiang entry->value = result; 232532ca7927Szhanghailiang 232632ca7927Szhanghailiang *link = entry; 232732ca7927Szhanghailiang link = &entry->next; 232832ca7927Szhanghailiang mem_blks = mem_blks->next; 232932ca7927Szhanghailiang } 233032ca7927Szhanghailiang 233132ca7927Szhanghailiang return head; 233232ca7927Szhanghailiang err: 233332ca7927Szhanghailiang qapi_free_GuestMemoryBlockResponseList(head); 233432ca7927Szhanghailiang error_propagate(errp, local_err); 2335a065aaa9Szhanghailiang return NULL; 2336a065aaa9Szhanghailiang } 2337a065aaa9Szhanghailiang 2338a065aaa9Szhanghailiang GuestMemoryBlockInfo *qmp_guest_get_memory_block_info(Error **errp) 2339a065aaa9Szhanghailiang { 2340ef82b60bSzhanghailiang Error *local_err = NULL; 2341ef82b60bSzhanghailiang char *dirpath; 2342ef82b60bSzhanghailiang int dirfd; 2343ef82b60bSzhanghailiang char *buf; 2344ef82b60bSzhanghailiang GuestMemoryBlockInfo *info; 2345ef82b60bSzhanghailiang 2346ef82b60bSzhanghailiang dirpath = g_strdup_printf("/sys/devices/system/memory/"); 2347ef82b60bSzhanghailiang dirfd = open(dirpath, O_RDONLY | O_DIRECTORY); 2348ef82b60bSzhanghailiang if (dirfd == -1) { 2349ef82b60bSzhanghailiang error_setg_errno(errp, errno, "open(\"%s\")", dirpath); 2350ef82b60bSzhanghailiang g_free(dirpath); 2351a065aaa9Szhanghailiang return NULL; 2352a065aaa9Szhanghailiang } 2353ef82b60bSzhanghailiang g_free(dirpath); 2354ef82b60bSzhanghailiang 2355ef82b60bSzhanghailiang buf = g_malloc0(20); 2356ef82b60bSzhanghailiang ga_read_sysfs_file(dirfd, "block_size_bytes", buf, 20, &local_err); 23578ce1ee46SShannon Zhao close(dirfd); 2358ef82b60bSzhanghailiang if (local_err) { 2359ef82b60bSzhanghailiang g_free(buf); 2360ef82b60bSzhanghailiang error_propagate(errp, local_err); 2361ef82b60bSzhanghailiang return NULL; 2362ef82b60bSzhanghailiang } 2363ef82b60bSzhanghailiang 2364ef82b60bSzhanghailiang info = g_new0(GuestMemoryBlockInfo, 1); 2365ef82b60bSzhanghailiang info->size = strtol(buf, NULL, 16); /* the unit is bytes */ 2366ef82b60bSzhanghailiang 2367ef82b60bSzhanghailiang g_free(buf); 2368ef82b60bSzhanghailiang 2369ef82b60bSzhanghailiang return info; 2370ef82b60bSzhanghailiang } 2371a065aaa9Szhanghailiang 2372e72c3f2eSMichael Roth #else /* defined(__linux__) */ 2373e72c3f2eSMichael Roth 237477dbc81bSMarkus Armbruster void qmp_guest_suspend_disk(Error **errp) 2375e72c3f2eSMichael Roth { 2376c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2377e72c3f2eSMichael Roth } 2378e72c3f2eSMichael Roth 237977dbc81bSMarkus Armbruster void qmp_guest_suspend_ram(Error **errp) 2380e72c3f2eSMichael Roth { 2381c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2382e72c3f2eSMichael Roth } 2383e72c3f2eSMichael Roth 238477dbc81bSMarkus Armbruster void qmp_guest_suspend_hybrid(Error **errp) 2385e72c3f2eSMichael Roth { 2386c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2387e72c3f2eSMichael Roth } 2388e72c3f2eSMichael Roth 2389e72c3f2eSMichael Roth GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp) 2390e72c3f2eSMichael Roth { 2391c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2392e72c3f2eSMichael Roth return NULL; 2393e72c3f2eSMichael Roth } 2394e72c3f2eSMichael Roth 2395d2baff62SLaszlo Ersek GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp) 2396d2baff62SLaszlo Ersek { 2397c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2398d2baff62SLaszlo Ersek return NULL; 2399d2baff62SLaszlo Ersek } 2400d2baff62SLaszlo Ersek 2401cbb65fc2SLaszlo Ersek int64_t qmp_guest_set_vcpus(GuestLogicalProcessorList *vcpus, Error **errp) 2402cbb65fc2SLaszlo Ersek { 2403c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2404cbb65fc2SLaszlo Ersek return -1; 2405cbb65fc2SLaszlo Ersek } 2406cbb65fc2SLaszlo Ersek 2407215a2771SDaniel P. Berrange void qmp_guest_set_user_password(const char *username, 2408215a2771SDaniel P. Berrange const char *password, 2409215a2771SDaniel P. Berrange bool crypted, 2410215a2771SDaniel P. Berrange Error **errp) 2411215a2771SDaniel P. Berrange { 2412c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2413215a2771SDaniel P. Berrange } 2414215a2771SDaniel P. Berrange 2415a065aaa9Szhanghailiang GuestMemoryBlockList *qmp_guest_get_memory_blocks(Error **errp) 2416a065aaa9Szhanghailiang { 2417c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2418a065aaa9Szhanghailiang return NULL; 2419a065aaa9Szhanghailiang } 2420a065aaa9Szhanghailiang 2421a065aaa9Szhanghailiang GuestMemoryBlockResponseList * 2422a065aaa9Szhanghailiang qmp_guest_set_memory_blocks(GuestMemoryBlockList *mem_blks, Error **errp) 2423a065aaa9Szhanghailiang { 2424c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2425a065aaa9Szhanghailiang return NULL; 2426a065aaa9Szhanghailiang } 2427a065aaa9Szhanghailiang 2428a065aaa9Szhanghailiang GuestMemoryBlockInfo *qmp_guest_get_memory_block_info(Error **errp) 2429a065aaa9Szhanghailiang { 2430c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2431a065aaa9Szhanghailiang return NULL; 2432a065aaa9Szhanghailiang } 2433a065aaa9Szhanghailiang 2434e72c3f2eSMichael Roth #endif 2435e72c3f2eSMichael Roth 2436d35d4cb5SMichael Roth #if !defined(CONFIG_FSFREEZE) 2437d35d4cb5SMichael Roth 243846d4c572STomoki Sekiyama GuestFilesystemInfoList *qmp_guest_get_fsinfo(Error **errp) 243946d4c572STomoki Sekiyama { 2440c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 244146d4c572STomoki Sekiyama return NULL; 244246d4c572STomoki Sekiyama } 244346d4c572STomoki Sekiyama 244477dbc81bSMarkus Armbruster GuestFsfreezeStatus qmp_guest_fsfreeze_status(Error **errp) 2445d35d4cb5SMichael Roth { 2446c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2447d35d4cb5SMichael Roth 2448d35d4cb5SMichael Roth return 0; 2449d35d4cb5SMichael Roth } 2450d35d4cb5SMichael Roth 245177dbc81bSMarkus Armbruster int64_t qmp_guest_fsfreeze_freeze(Error **errp) 2452d35d4cb5SMichael Roth { 2453c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2454d35d4cb5SMichael Roth 2455d35d4cb5SMichael Roth return 0; 2456d35d4cb5SMichael Roth } 2457d35d4cb5SMichael Roth 2458e99bce20STomoki Sekiyama int64_t qmp_guest_fsfreeze_freeze_list(bool has_mountpoints, 2459e99bce20STomoki Sekiyama strList *mountpoints, 2460e99bce20STomoki Sekiyama Error **errp) 2461e99bce20STomoki Sekiyama { 2462c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2463e99bce20STomoki Sekiyama 2464e99bce20STomoki Sekiyama return 0; 2465e99bce20STomoki Sekiyama } 2466e99bce20STomoki Sekiyama 246777dbc81bSMarkus Armbruster int64_t qmp_guest_fsfreeze_thaw(Error **errp) 2468d35d4cb5SMichael Roth { 2469c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2470d35d4cb5SMichael Roth 2471d35d4cb5SMichael Roth return 0; 2472d35d4cb5SMichael Roth } 2473eab5fd59SPaolo Bonzini #endif /* CONFIG_FSFREEZE */ 2474d35d4cb5SMichael Roth 2475eab5fd59SPaolo Bonzini #if !defined(CONFIG_FSTRIM) 2476e82855d9SJustin Ossevoort GuestFilesystemTrimResponse * 2477e82855d9SJustin Ossevoort qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **errp) 2478eab5fd59SPaolo Bonzini { 2479c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2480e82855d9SJustin Ossevoort return NULL; 2481eab5fd59SPaolo Bonzini } 2482d35d4cb5SMichael Roth #endif 2483d35d4cb5SMichael Roth 24841281c08aSTomoki Sekiyama /* add unsupported commands to the blacklist */ 24851281c08aSTomoki Sekiyama GList *ga_command_blacklist_init(GList *blacklist) 24861281c08aSTomoki Sekiyama { 24871281c08aSTomoki Sekiyama #if !defined(__linux__) 24881281c08aSTomoki Sekiyama { 24891281c08aSTomoki Sekiyama const char *list[] = { 24901281c08aSTomoki Sekiyama "guest-suspend-disk", "guest-suspend-ram", 24911281c08aSTomoki Sekiyama "guest-suspend-hybrid", "guest-network-get-interfaces", 24920dd38a03Szhanghailiang "guest-get-vcpus", "guest-set-vcpus", 24930dd38a03Szhanghailiang "guest-get-memory-blocks", "guest-set-memory-blocks", 24940dd38a03Szhanghailiang "guest-get-memory-block-size", NULL}; 24951281c08aSTomoki Sekiyama char **p = (char **)list; 24961281c08aSTomoki Sekiyama 24971281c08aSTomoki Sekiyama while (*p) { 24984bca81ceSMarc-André Lureau blacklist = g_list_append(blacklist, g_strdup(*p++)); 24991281c08aSTomoki Sekiyama } 25001281c08aSTomoki Sekiyama } 25011281c08aSTomoki Sekiyama #endif 25021281c08aSTomoki Sekiyama 25031281c08aSTomoki Sekiyama #if !defined(CONFIG_FSFREEZE) 25041281c08aSTomoki Sekiyama { 25051281c08aSTomoki Sekiyama const char *list[] = { 25061281c08aSTomoki Sekiyama "guest-get-fsinfo", "guest-fsfreeze-status", 25071281c08aSTomoki Sekiyama "guest-fsfreeze-freeze", "guest-fsfreeze-freeze-list", 25081281c08aSTomoki Sekiyama "guest-fsfreeze-thaw", "guest-get-fsinfo", NULL}; 25091281c08aSTomoki Sekiyama char **p = (char **)list; 25101281c08aSTomoki Sekiyama 25111281c08aSTomoki Sekiyama while (*p) { 25124bca81ceSMarc-André Lureau blacklist = g_list_append(blacklist, g_strdup(*p++)); 25131281c08aSTomoki Sekiyama } 25141281c08aSTomoki Sekiyama } 25151281c08aSTomoki Sekiyama #endif 25161281c08aSTomoki Sekiyama 25171281c08aSTomoki Sekiyama #if !defined(CONFIG_FSTRIM) 25184bca81ceSMarc-André Lureau blacklist = g_list_append(blacklist, g_strdup("guest-fstrim")); 25191281c08aSTomoki Sekiyama #endif 25201281c08aSTomoki Sekiyama 25211281c08aSTomoki Sekiyama return blacklist; 25221281c08aSTomoki Sekiyama } 25231281c08aSTomoki Sekiyama 2524c216e5adSMichael Roth /* register init/cleanup routines for stateful command groups */ 2525c216e5adSMichael Roth void ga_command_state_init(GAState *s, GACommandState *cs) 2526c216e5adSMichael Roth { 2527c216e5adSMichael Roth #if defined(CONFIG_FSFREEZE) 2528f22d85e9SMichael Roth ga_command_state_add(cs, NULL, guest_fsfreeze_cleanup); 2529c216e5adSMichael Roth #endif 2530c216e5adSMichael Roth } 2531