1c216e5adSMichael Roth /* 2c216e5adSMichael Roth * QEMU Guest Agent POSIX-specific command implementations 3c216e5adSMichael Roth * 4c216e5adSMichael Roth * Copyright IBM Corp. 2011 5c216e5adSMichael Roth * 6c216e5adSMichael Roth * Authors: 7c216e5adSMichael Roth * Michael Roth <mdroth@linux.vnet.ibm.com> 83424fc9fSMichal Privoznik * Michal Privoznik <mprivozn@redhat.com> 9c216e5adSMichael Roth * 10c216e5adSMichael Roth * This work is licensed under the terms of the GNU GPL, version 2 or later. 11c216e5adSMichael Roth * See the COPYING file in the top-level directory. 12c216e5adSMichael Roth */ 13c216e5adSMichael Roth 144459bf38SPeter Maydell #include "qemu/osdep.h" 15c216e5adSMichael Roth #include <sys/ioctl.h> 169848f797STomáš Golembiovský #include <sys/utsname.h> 172c02cbf6SLuiz Capitulino #include <sys/wait.h> 1846d4c572STomoki Sekiyama #include <dirent.h> 19dc03272dSMichael S. Tsirkin #include "guest-agent-core.h" 20eb815e24SMarkus Armbruster #include "qga-qapi-commands.h" 21e688df6bSMarkus Armbruster #include "qapi/error.h" 227b1b5d19SPaolo Bonzini #include "qapi/qmp/qerror.h" 231de7afc9SPaolo Bonzini #include "qemu/queue.h" 241de7afc9SPaolo Bonzini #include "qemu/host-utils.h" 2512505396SDenis V. Lunev #include "qemu/sockets.h" 26920639caSDaniel P. Berrange #include "qemu/base64.h" 27f348b6d1SVeronia Bahaa #include "qemu/cutils.h" 285d3586b8SPhilippe Mathieu-Daudé #include "commands-common.h" 29c216e5adSMichael Roth 30e674605fSTomáš Golembiovský #ifdef HAVE_UTMPX 31e674605fSTomáš Golembiovský #include <utmpx.h> 32e674605fSTomáš Golembiovský #endif 33e674605fSTomáš Golembiovský 34e72c3f2eSMichael Roth #if defined(__linux__) 35e72c3f2eSMichael Roth #include <mntent.h> 36e72c3f2eSMichael Roth #include <linux/fs.h> 3725b5ff1aSChen Hanxiao #include <sys/statvfs.h> 38e72c3f2eSMichael Roth 39b616105aSTomáš Golembiovský #ifdef CONFIG_LIBUDEV 40b616105aSTomáš Golembiovský #include <libudev.h> 41b616105aSTomáš Golembiovský #endif 42b616105aSTomáš Golembiovský 43eab5fd59SPaolo Bonzini #ifdef FIFREEZE 44e72c3f2eSMichael Roth #define CONFIG_FSFREEZE 45e72c3f2eSMichael Roth #endif 46eab5fd59SPaolo Bonzini #ifdef FITRIM 47eab5fd59SPaolo Bonzini #define CONFIG_FSTRIM 48eab5fd59SPaolo Bonzini #endif 49e72c3f2eSMichael Roth #endif 50e72c3f2eSMichael Roth 5159e35c7bSAndrew Deason #ifdef HAVE_GETIFADDRS 5259e35c7bSAndrew Deason #include <arpa/inet.h> 5359e35c7bSAndrew Deason #include <sys/socket.h> 5459e35c7bSAndrew Deason #include <net/if.h> 5559e35c7bSAndrew Deason #include <sys/types.h> 5659e35c7bSAndrew Deason #include <ifaddrs.h> 5759e35c7bSAndrew Deason #ifdef CONFIG_SOLARIS 5859e35c7bSAndrew Deason #include <sys/sockio.h> 5959e35c7bSAndrew Deason #endif 6059e35c7bSAndrew Deason #endif 6159e35c7bSAndrew Deason 6277dbc81bSMarkus Armbruster static void ga_wait_child(pid_t pid, int *status, Error **errp) 63d220a6dfSLuiz Capitulino { 64d220a6dfSLuiz Capitulino pid_t rpid; 65d220a6dfSLuiz Capitulino 66d220a6dfSLuiz Capitulino *status = 0; 67d220a6dfSLuiz Capitulino 68d220a6dfSLuiz Capitulino do { 69d220a6dfSLuiz Capitulino rpid = waitpid(pid, status, 0); 70d220a6dfSLuiz Capitulino } while (rpid == -1 && errno == EINTR); 71d220a6dfSLuiz Capitulino 72d220a6dfSLuiz Capitulino if (rpid == -1) { 7377dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to wait for child (pid: %d)", 7477dbc81bSMarkus Armbruster pid); 75d220a6dfSLuiz Capitulino return; 76d220a6dfSLuiz Capitulino } 77d220a6dfSLuiz Capitulino 78d220a6dfSLuiz Capitulino g_assert(rpid == pid); 79d220a6dfSLuiz Capitulino } 80d220a6dfSLuiz Capitulino 8177dbc81bSMarkus Armbruster void qmp_guest_shutdown(bool has_mode, const char *mode, Error **errp) 82c216e5adSMichael Roth { 83c216e5adSMichael Roth const char *shutdown_flag; 84d220a6dfSLuiz Capitulino Error *local_err = NULL; 85d220a6dfSLuiz Capitulino pid_t pid; 863674838cSLuiz Capitulino int status; 87c216e5adSMichael Roth 88*c8ec041dSAndrew Deason #ifdef CONFIG_SOLARIS 89*c8ec041dSAndrew Deason const char *powerdown_flag = "-i5"; 90*c8ec041dSAndrew Deason const char *halt_flag = "-i0"; 91*c8ec041dSAndrew Deason const char *reboot_flag = "-i6"; 92*c8ec041dSAndrew Deason #else 93*c8ec041dSAndrew Deason const char *powerdown_flag = "-P"; 94*c8ec041dSAndrew Deason const char *halt_flag = "-H"; 95*c8ec041dSAndrew Deason const char *reboot_flag = "-r"; 96*c8ec041dSAndrew Deason #endif 97*c8ec041dSAndrew Deason 98c216e5adSMichael Roth slog("guest-shutdown called, mode: %s", mode); 99c216e5adSMichael Roth if (!has_mode || strcmp(mode, "powerdown") == 0) { 100*c8ec041dSAndrew Deason shutdown_flag = powerdown_flag; 101c216e5adSMichael Roth } else if (strcmp(mode, "halt") == 0) { 102*c8ec041dSAndrew Deason shutdown_flag = halt_flag; 103c216e5adSMichael Roth } else if (strcmp(mode, "reboot") == 0) { 104*c8ec041dSAndrew Deason shutdown_flag = reboot_flag; 105c216e5adSMichael Roth } else { 10677dbc81bSMarkus Armbruster error_setg(errp, 107d220a6dfSLuiz Capitulino "mode is invalid (valid values are: halt|powerdown|reboot"); 108c216e5adSMichael Roth return; 109c216e5adSMichael Roth } 110c216e5adSMichael Roth 111d5dd3498SLuiz Capitulino pid = fork(); 112d5dd3498SLuiz Capitulino if (pid == 0) { 113c216e5adSMichael Roth /* child, start the shutdown */ 114c216e5adSMichael Roth setsid(); 1153674838cSLuiz Capitulino reopen_fd_to_null(0); 1163674838cSLuiz Capitulino reopen_fd_to_null(1); 1173674838cSLuiz Capitulino reopen_fd_to_null(2); 118c216e5adSMichael Roth 119*c8ec041dSAndrew Deason #ifdef CONFIG_SOLARIS 120*c8ec041dSAndrew Deason execl("/sbin/shutdown", "shutdown", shutdown_flag, "-g0", "-y", 121*c8ec041dSAndrew Deason "hypervisor initiated shutdown", (char *)NULL); 122*c8ec041dSAndrew Deason #else 123fcc41961SMarc-André Lureau execl("/sbin/shutdown", "shutdown", "-h", shutdown_flag, "+0", 124fcc41961SMarc-André Lureau "hypervisor initiated shutdown", (char *)NULL); 125*c8ec041dSAndrew Deason #endif 1263674838cSLuiz Capitulino _exit(EXIT_FAILURE); 127d5dd3498SLuiz Capitulino } else if (pid < 0) { 12877dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to create child process"); 129d5dd3498SLuiz Capitulino return; 130d5dd3498SLuiz Capitulino } 131d5dd3498SLuiz Capitulino 132d220a6dfSLuiz Capitulino ga_wait_child(pid, &status, &local_err); 13384d18f06SMarkus Armbruster if (local_err) { 13477dbc81bSMarkus Armbruster error_propagate(errp, local_err); 135d220a6dfSLuiz Capitulino return; 136d220a6dfSLuiz Capitulino } 137d220a6dfSLuiz Capitulino 138d220a6dfSLuiz Capitulino if (!WIFEXITED(status)) { 13977dbc81bSMarkus Armbruster error_setg(errp, "child process has terminated abnormally"); 140d220a6dfSLuiz Capitulino return; 141d220a6dfSLuiz Capitulino } 142d220a6dfSLuiz Capitulino 143d220a6dfSLuiz Capitulino if (WEXITSTATUS(status)) { 14477dbc81bSMarkus Armbruster error_setg(errp, "child process has failed to shutdown"); 145d220a6dfSLuiz Capitulino return; 146d220a6dfSLuiz Capitulino } 147d220a6dfSLuiz Capitulino 148085d8134SPeter Maydell /* succeeded */ 149c216e5adSMichael Roth } 150c216e5adSMichael Roth 1512c958923SMichal Privoznik void qmp_guest_set_time(bool has_time, int64_t time_ns, Error **errp) 152a1bca57fSLei Li { 153a1bca57fSLei Li int ret; 154a1bca57fSLei Li int status; 155a1bca57fSLei Li pid_t pid; 156a1bca57fSLei Li Error *local_err = NULL; 157a1bca57fSLei Li struct timeval tv; 1585c6096e5SCornelia Huck static const char hwclock_path[] = "/sbin/hwclock"; 1595c6096e5SCornelia Huck static int hwclock_available = -1; 1605c6096e5SCornelia Huck 1615c6096e5SCornelia Huck if (hwclock_available < 0) { 1625c6096e5SCornelia Huck hwclock_available = (access(hwclock_path, X_OK) == 0); 1635c6096e5SCornelia Huck } 1645c6096e5SCornelia Huck 1655c6096e5SCornelia Huck if (!hwclock_available) { 1665c6096e5SCornelia Huck error_setg(errp, QERR_UNSUPPORTED); 1675c6096e5SCornelia Huck return; 1685c6096e5SCornelia Huck } 169a1bca57fSLei Li 1702c958923SMichal Privoznik /* If user has passed a time, validate and set it. */ 1712c958923SMichal Privoznik if (has_time) { 17200d2f370SMarc-André Lureau GDate date = { 0, }; 17300d2f370SMarc-André Lureau 174a1bca57fSLei Li /* year-2038 will overflow in case time_t is 32bit */ 175a1bca57fSLei Li if (time_ns / 1000000000 != (time_t)(time_ns / 1000000000)) { 176a1bca57fSLei Li error_setg(errp, "Time %" PRId64 " is too large", time_ns); 177a1bca57fSLei Li return; 178a1bca57fSLei Li } 179a1bca57fSLei Li 180a1bca57fSLei Li tv.tv_sec = time_ns / 1000000000; 181a1bca57fSLei Li tv.tv_usec = (time_ns % 1000000000) / 1000; 18200d2f370SMarc-André Lureau g_date_set_time_t(&date, tv.tv_sec); 18300d2f370SMarc-André Lureau if (date.year < 1970 || date.year >= 2070) { 18400d2f370SMarc-André Lureau error_setg_errno(errp, errno, "Invalid time"); 18500d2f370SMarc-André Lureau return; 18600d2f370SMarc-André Lureau } 187a1bca57fSLei Li 188a1bca57fSLei Li ret = settimeofday(&tv, NULL); 189a1bca57fSLei Li if (ret < 0) { 190a1bca57fSLei Li error_setg_errno(errp, errno, "Failed to set time to guest"); 191a1bca57fSLei Li return; 192a1bca57fSLei Li } 1932c958923SMichal Privoznik } 194a1bca57fSLei Li 1952c958923SMichal Privoznik /* Now, if user has passed a time to set and the system time is set, we 1962c958923SMichal Privoznik * just need to synchronize the hardware clock. However, if no time was 1972c958923SMichal Privoznik * passed, user is requesting the opposite: set the system time from the 1981634df56SAmos Kong * hardware clock (RTC). */ 199a1bca57fSLei Li pid = fork(); 200a1bca57fSLei Li if (pid == 0) { 201a1bca57fSLei Li setsid(); 202a1bca57fSLei Li reopen_fd_to_null(0); 203a1bca57fSLei Li reopen_fd_to_null(1); 204a1bca57fSLei Li reopen_fd_to_null(2); 205a1bca57fSLei Li 2062c958923SMichal Privoznik /* Use '/sbin/hwclock -w' to set RTC from the system time, 2072c958923SMichal Privoznik * or '/sbin/hwclock -s' to set the system time from RTC. */ 208fcc41961SMarc-André Lureau execl(hwclock_path, "hwclock", has_time ? "-w" : "-s", NULL); 209a1bca57fSLei Li _exit(EXIT_FAILURE); 210a1bca57fSLei Li } else if (pid < 0) { 211a1bca57fSLei Li error_setg_errno(errp, errno, "failed to create child process"); 212a1bca57fSLei Li return; 213a1bca57fSLei Li } 214a1bca57fSLei Li 215a1bca57fSLei Li ga_wait_child(pid, &status, &local_err); 21684d18f06SMarkus Armbruster if (local_err) { 217a1bca57fSLei Li error_propagate(errp, local_err); 218a1bca57fSLei Li return; 219a1bca57fSLei Li } 220a1bca57fSLei Li 221a1bca57fSLei Li if (!WIFEXITED(status)) { 222a1bca57fSLei Li error_setg(errp, "child process has terminated abnormally"); 223a1bca57fSLei Li return; 224a1bca57fSLei Li } 225a1bca57fSLei Li 226a1bca57fSLei Li if (WEXITSTATUS(status)) { 227a1bca57fSLei Li error_setg(errp, "hwclock failed to set hardware clock to system time"); 228a1bca57fSLei Li return; 229a1bca57fSLei Li } 230a1bca57fSLei Li } 231a1bca57fSLei Li 232895b00f6SMarc-André Lureau typedef enum { 233895b00f6SMarc-André Lureau RW_STATE_NEW, 234895b00f6SMarc-André Lureau RW_STATE_READING, 235895b00f6SMarc-André Lureau RW_STATE_WRITING, 236895b00f6SMarc-André Lureau } RwState; 237895b00f6SMarc-André Lureau 2385d3586b8SPhilippe Mathieu-Daudé struct GuestFileHandle { 239c216e5adSMichael Roth uint64_t id; 240c216e5adSMichael Roth FILE *fh; 241895b00f6SMarc-André Lureau RwState state; 242c216e5adSMichael Roth QTAILQ_ENTRY(GuestFileHandle) next; 2435d3586b8SPhilippe Mathieu-Daudé }; 244c216e5adSMichael Roth 245c216e5adSMichael Roth static struct { 246c216e5adSMichael Roth QTAILQ_HEAD(, GuestFileHandle) filehandles; 247b4fe97c8SDenis V. Lunev } guest_file_state = { 248b4fe97c8SDenis V. Lunev .filehandles = QTAILQ_HEAD_INITIALIZER(guest_file_state.filehandles), 249b4fe97c8SDenis V. Lunev }; 250c216e5adSMichael Roth 25139097dafSMichael Roth static int64_t guest_file_handle_add(FILE *fh, Error **errp) 252c216e5adSMichael Roth { 253c216e5adSMichael Roth GuestFileHandle *gfh; 25439097dafSMichael Roth int64_t handle; 25539097dafSMichael Roth 25639097dafSMichael Roth handle = ga_get_fd_handle(ga_state, errp); 257a903f40cSMarkus Armbruster if (handle < 0) { 258a903f40cSMarkus Armbruster return -1; 25939097dafSMichael Roth } 260c216e5adSMichael Roth 261f3a06403SMarkus Armbruster gfh = g_new0(GuestFileHandle, 1); 26239097dafSMichael Roth gfh->id = handle; 263c216e5adSMichael Roth gfh->fh = fh; 264c216e5adSMichael Roth QTAILQ_INSERT_TAIL(&guest_file_state.filehandles, gfh, next); 26539097dafSMichael Roth 26639097dafSMichael Roth return handle; 267c216e5adSMichael Roth } 268c216e5adSMichael Roth 2695d3586b8SPhilippe Mathieu-Daudé GuestFileHandle *guest_file_handle_find(int64_t id, Error **errp) 270c216e5adSMichael Roth { 271c216e5adSMichael Roth GuestFileHandle *gfh; 272c216e5adSMichael Roth 273c216e5adSMichael Roth QTAILQ_FOREACH(gfh, &guest_file_state.filehandles, next) 274c216e5adSMichael Roth { 275c216e5adSMichael Roth if (gfh->id == id) { 276c216e5adSMichael Roth return gfh; 277c216e5adSMichael Roth } 278c216e5adSMichael Roth } 279c216e5adSMichael Roth 28077dbc81bSMarkus Armbruster error_setg(errp, "handle '%" PRId64 "' has not been found", id); 281c216e5adSMichael Roth return NULL; 282c216e5adSMichael Roth } 283c216e5adSMichael Roth 284c689b4f1SLaszlo Ersek typedef const char * const ccpc; 285c689b4f1SLaszlo Ersek 2868fe6bbcaSLaszlo Ersek #ifndef O_BINARY 2878fe6bbcaSLaszlo Ersek #define O_BINARY 0 2888fe6bbcaSLaszlo Ersek #endif 2898fe6bbcaSLaszlo Ersek 290c689b4f1SLaszlo Ersek /* http://pubs.opengroup.org/onlinepubs/9699919799/functions/fopen.html */ 291c689b4f1SLaszlo Ersek static const struct { 292c689b4f1SLaszlo Ersek ccpc *forms; 293c689b4f1SLaszlo Ersek int oflag_base; 294c689b4f1SLaszlo Ersek } guest_file_open_modes[] = { 2958fe6bbcaSLaszlo Ersek { (ccpc[]){ "r", NULL }, O_RDONLY }, 2968fe6bbcaSLaszlo Ersek { (ccpc[]){ "rb", NULL }, O_RDONLY | O_BINARY }, 2978fe6bbcaSLaszlo Ersek { (ccpc[]){ "w", NULL }, O_WRONLY | O_CREAT | O_TRUNC }, 2988fe6bbcaSLaszlo Ersek { (ccpc[]){ "wb", NULL }, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY }, 2998fe6bbcaSLaszlo Ersek { (ccpc[]){ "a", NULL }, O_WRONLY | O_CREAT | O_APPEND }, 3008fe6bbcaSLaszlo Ersek { (ccpc[]){ "ab", NULL }, O_WRONLY | O_CREAT | O_APPEND | O_BINARY }, 3018fe6bbcaSLaszlo Ersek { (ccpc[]){ "r+", NULL }, O_RDWR }, 3028fe6bbcaSLaszlo Ersek { (ccpc[]){ "rb+", "r+b", NULL }, O_RDWR | O_BINARY }, 3038fe6bbcaSLaszlo Ersek { (ccpc[]){ "w+", NULL }, O_RDWR | O_CREAT | O_TRUNC }, 3048fe6bbcaSLaszlo Ersek { (ccpc[]){ "wb+", "w+b", NULL }, O_RDWR | O_CREAT | O_TRUNC | O_BINARY }, 3058fe6bbcaSLaszlo Ersek { (ccpc[]){ "a+", NULL }, O_RDWR | O_CREAT | O_APPEND }, 3068fe6bbcaSLaszlo Ersek { (ccpc[]){ "ab+", "a+b", NULL }, O_RDWR | O_CREAT | O_APPEND | O_BINARY } 307c689b4f1SLaszlo Ersek }; 308c689b4f1SLaszlo Ersek 309c689b4f1SLaszlo Ersek static int 31077dbc81bSMarkus Armbruster find_open_flag(const char *mode_str, Error **errp) 311c689b4f1SLaszlo Ersek { 312c689b4f1SLaszlo Ersek unsigned mode; 313c689b4f1SLaszlo Ersek 314c689b4f1SLaszlo Ersek for (mode = 0; mode < ARRAY_SIZE(guest_file_open_modes); ++mode) { 315c689b4f1SLaszlo Ersek ccpc *form; 316c689b4f1SLaszlo Ersek 317c689b4f1SLaszlo Ersek form = guest_file_open_modes[mode].forms; 318c689b4f1SLaszlo Ersek while (*form != NULL && strcmp(*form, mode_str) != 0) { 319c689b4f1SLaszlo Ersek ++form; 320c689b4f1SLaszlo Ersek } 321c689b4f1SLaszlo Ersek if (*form != NULL) { 322c689b4f1SLaszlo Ersek break; 323c689b4f1SLaszlo Ersek } 324c689b4f1SLaszlo Ersek } 325c689b4f1SLaszlo Ersek 326c689b4f1SLaszlo Ersek if (mode == ARRAY_SIZE(guest_file_open_modes)) { 32777dbc81bSMarkus Armbruster error_setg(errp, "invalid file open mode '%s'", mode_str); 328c689b4f1SLaszlo Ersek return -1; 329c689b4f1SLaszlo Ersek } 330c689b4f1SLaszlo Ersek return guest_file_open_modes[mode].oflag_base | O_NOCTTY | O_NONBLOCK; 331c689b4f1SLaszlo Ersek } 332c689b4f1SLaszlo Ersek 333c689b4f1SLaszlo Ersek #define DEFAULT_NEW_FILE_MODE (S_IRUSR | S_IWUSR | \ 334c689b4f1SLaszlo Ersek S_IRGRP | S_IWGRP | \ 335c689b4f1SLaszlo Ersek S_IROTH | S_IWOTH) 336c689b4f1SLaszlo Ersek 337c689b4f1SLaszlo Ersek static FILE * 33877dbc81bSMarkus Armbruster safe_open_or_create(const char *path, const char *mode, Error **errp) 339c689b4f1SLaszlo Ersek { 340c689b4f1SLaszlo Ersek Error *local_err = NULL; 341c689b4f1SLaszlo Ersek int oflag; 342c689b4f1SLaszlo Ersek 343c689b4f1SLaszlo Ersek oflag = find_open_flag(mode, &local_err); 344c689b4f1SLaszlo Ersek if (local_err == NULL) { 345c689b4f1SLaszlo Ersek int fd; 346c689b4f1SLaszlo Ersek 347c689b4f1SLaszlo Ersek /* If the caller wants / allows creation of a new file, we implement it 348c689b4f1SLaszlo Ersek * with a two step process: open() + (open() / fchmod()). 349c689b4f1SLaszlo Ersek * 350c689b4f1SLaszlo Ersek * First we insist on creating the file exclusively as a new file. If 351c689b4f1SLaszlo Ersek * that succeeds, we're free to set any file-mode bits on it. (The 352c689b4f1SLaszlo Ersek * motivation is that we want to set those file-mode bits independently 353c689b4f1SLaszlo Ersek * of the current umask.) 354c689b4f1SLaszlo Ersek * 355c689b4f1SLaszlo Ersek * If the exclusive creation fails because the file already exists 356c689b4f1SLaszlo Ersek * (EEXIST is not possible for any other reason), we just attempt to 357c689b4f1SLaszlo Ersek * open the file, but in this case we won't be allowed to change the 358c689b4f1SLaszlo Ersek * file-mode bits on the preexistent file. 359c689b4f1SLaszlo Ersek * 360c689b4f1SLaszlo Ersek * The pathname should never disappear between the two open()s in 361c689b4f1SLaszlo Ersek * practice. If it happens, then someone very likely tried to race us. 362c689b4f1SLaszlo Ersek * In this case just go ahead and report the ENOENT from the second 363c689b4f1SLaszlo Ersek * open() to the caller. 364c689b4f1SLaszlo Ersek * 365c689b4f1SLaszlo Ersek * If the caller wants to open a preexistent file, then the first 366c689b4f1SLaszlo Ersek * open() is decisive and its third argument is ignored, and the second 367c689b4f1SLaszlo Ersek * open() and the fchmod() are never called. 368c689b4f1SLaszlo Ersek */ 369c689b4f1SLaszlo Ersek fd = open(path, oflag | ((oflag & O_CREAT) ? O_EXCL : 0), 0); 370c689b4f1SLaszlo Ersek if (fd == -1 && errno == EEXIST) { 371c689b4f1SLaszlo Ersek oflag &= ~(unsigned)O_CREAT; 372c689b4f1SLaszlo Ersek fd = open(path, oflag); 373c689b4f1SLaszlo Ersek } 374c689b4f1SLaszlo Ersek 375c689b4f1SLaszlo Ersek if (fd == -1) { 376c689b4f1SLaszlo Ersek error_setg_errno(&local_err, errno, "failed to open file '%s' " 377c689b4f1SLaszlo Ersek "(mode: '%s')", path, mode); 378c689b4f1SLaszlo Ersek } else { 379c689b4f1SLaszlo Ersek qemu_set_cloexec(fd); 380c689b4f1SLaszlo Ersek 381c689b4f1SLaszlo Ersek if ((oflag & O_CREAT) && fchmod(fd, DEFAULT_NEW_FILE_MODE) == -1) { 382c689b4f1SLaszlo Ersek error_setg_errno(&local_err, errno, "failed to set permission " 383c689b4f1SLaszlo Ersek "0%03o on new file '%s' (mode: '%s')", 384c689b4f1SLaszlo Ersek (unsigned)DEFAULT_NEW_FILE_MODE, path, mode); 385c689b4f1SLaszlo Ersek } else { 386c689b4f1SLaszlo Ersek FILE *f; 387c689b4f1SLaszlo Ersek 388c689b4f1SLaszlo Ersek f = fdopen(fd, mode); 389c689b4f1SLaszlo Ersek if (f == NULL) { 390c689b4f1SLaszlo Ersek error_setg_errno(&local_err, errno, "failed to associate " 391c689b4f1SLaszlo Ersek "stdio stream with file descriptor %d, " 392c689b4f1SLaszlo Ersek "file '%s' (mode: '%s')", fd, path, mode); 393c689b4f1SLaszlo Ersek } else { 394c689b4f1SLaszlo Ersek return f; 395c689b4f1SLaszlo Ersek } 396c689b4f1SLaszlo Ersek } 397c689b4f1SLaszlo Ersek 398c689b4f1SLaszlo Ersek close(fd); 3992b720018SLaszlo Ersek if (oflag & O_CREAT) { 4002b720018SLaszlo Ersek unlink(path); 4012b720018SLaszlo Ersek } 402c689b4f1SLaszlo Ersek } 403c689b4f1SLaszlo Ersek } 404c689b4f1SLaszlo Ersek 40577dbc81bSMarkus Armbruster error_propagate(errp, local_err); 406c689b4f1SLaszlo Ersek return NULL; 407c689b4f1SLaszlo Ersek } 408c689b4f1SLaszlo Ersek 40977dbc81bSMarkus Armbruster int64_t qmp_guest_file_open(const char *path, bool has_mode, const char *mode, 41077dbc81bSMarkus Armbruster Error **errp) 411c216e5adSMichael Roth { 412c216e5adSMichael Roth FILE *fh; 413c689b4f1SLaszlo Ersek Error *local_err = NULL; 41485b6f6f5SSimon Zolin int64_t handle; 415c216e5adSMichael Roth 416c216e5adSMichael Roth if (!has_mode) { 417c216e5adSMichael Roth mode = "r"; 418c216e5adSMichael Roth } 419c216e5adSMichael Roth slog("guest-file-open called, filepath: %s, mode: %s", path, mode); 420c689b4f1SLaszlo Ersek fh = safe_open_or_create(path, mode, &local_err); 421c689b4f1SLaszlo Ersek if (local_err != NULL) { 42277dbc81bSMarkus Armbruster error_propagate(errp, local_err); 423c216e5adSMichael Roth return -1; 424c216e5adSMichael Roth } 425c216e5adSMichael Roth 426c216e5adSMichael Roth /* set fd non-blocking to avoid common use cases (like reading from a 427c216e5adSMichael Roth * named pipe) from hanging the agent 428c216e5adSMichael Roth */ 429b0a8f9adSMarc-André Lureau if (!g_unix_set_fd_nonblocking(fileno(fh), true, NULL)) { 430b0a8f9adSMarc-André Lureau fclose(fh); 431b0a8f9adSMarc-André Lureau error_setg_errno(errp, errno, "Failed to set FD nonblocking"); 432b0a8f9adSMarc-André Lureau return -1; 433b0a8f9adSMarc-André Lureau } 434c216e5adSMichael Roth 43577dbc81bSMarkus Armbruster handle = guest_file_handle_add(fh, errp); 436a903f40cSMarkus Armbruster if (handle < 0) { 43739097dafSMichael Roth fclose(fh); 43839097dafSMichael Roth return -1; 43939097dafSMichael Roth } 44039097dafSMichael Roth 441d607a523SStefan Weil slog("guest-file-open, handle: %" PRId64, handle); 44239097dafSMichael Roth return handle; 443c216e5adSMichael Roth } 444c216e5adSMichael Roth 44577dbc81bSMarkus Armbruster void qmp_guest_file_close(int64_t handle, Error **errp) 446c216e5adSMichael Roth { 44777dbc81bSMarkus Armbruster GuestFileHandle *gfh = guest_file_handle_find(handle, errp); 448c216e5adSMichael Roth int ret; 449c216e5adSMichael Roth 450d607a523SStefan Weil slog("guest-file-close called, handle: %" PRId64, handle); 451c216e5adSMichael Roth if (!gfh) { 452c216e5adSMichael Roth return; 453c216e5adSMichael Roth } 454c216e5adSMichael Roth 455c216e5adSMichael Roth ret = fclose(gfh->fh); 4563ac4b7c5SLuiz Capitulino if (ret == EOF) { 45777dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to close handle"); 458c216e5adSMichael Roth return; 459c216e5adSMichael Roth } 460c216e5adSMichael Roth 461c216e5adSMichael Roth QTAILQ_REMOVE(&guest_file_state.filehandles, gfh, next); 462c216e5adSMichael Roth g_free(gfh); 463c216e5adSMichael Roth } 464c216e5adSMichael Roth 465ead83a13SPhilippe Mathieu-Daudé GuestFileRead *guest_file_read_unsafe(GuestFileHandle *gfh, 46677dbc81bSMarkus Armbruster int64_t count, Error **errp) 467c216e5adSMichael Roth { 468c216e5adSMichael Roth GuestFileRead *read_data = NULL; 469c216e5adSMichael Roth guchar *buf; 470ead83a13SPhilippe Mathieu-Daudé FILE *fh = gfh->fh; 471c216e5adSMichael Roth size_t read_count; 472c216e5adSMichael Roth 473895b00f6SMarc-André Lureau /* explicitly flush when switching from writing to reading */ 474895b00f6SMarc-André Lureau if (gfh->state == RW_STATE_WRITING) { 475895b00f6SMarc-André Lureau int ret = fflush(fh); 476895b00f6SMarc-André Lureau if (ret == EOF) { 477895b00f6SMarc-André Lureau error_setg_errno(errp, errno, "failed to flush file"); 478895b00f6SMarc-André Lureau return NULL; 479895b00f6SMarc-André Lureau } 480895b00f6SMarc-André Lureau gfh->state = RW_STATE_NEW; 481895b00f6SMarc-André Lureau } 482895b00f6SMarc-André Lureau 483c216e5adSMichael Roth buf = g_malloc0(count + 1); 484c216e5adSMichael Roth read_count = fread(buf, 1, count, fh); 485c216e5adSMichael Roth if (ferror(fh)) { 48677dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to read file"); 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, 5600b4b4938SEric Blake GuestFileWhence *whence_code, 5610b4b4938SEric Blake Error **errp) 562c216e5adSMichael Roth { 56377dbc81bSMarkus Armbruster GuestFileHandle *gfh = guest_file_handle_find(handle, errp); 564c216e5adSMichael Roth GuestFileSeek *seek_data = NULL; 565c216e5adSMichael Roth FILE *fh; 566c216e5adSMichael Roth int ret; 5670a982b1bSEric Blake int whence; 5680b4b4938SEric Blake Error *err = NULL; 569c216e5adSMichael Roth 570c216e5adSMichael Roth if (!gfh) { 571c216e5adSMichael Roth return NULL; 572c216e5adSMichael Roth } 573c216e5adSMichael Roth 5740a982b1bSEric Blake /* We stupidly exposed 'whence':'int' in our qapi */ 5750b4b4938SEric Blake whence = ga_parse_whence(whence_code, &err); 5760b4b4938SEric Blake if (err) { 5770b4b4938SEric Blake error_propagate(errp, err); 5780a982b1bSEric Blake return NULL; 5790a982b1bSEric Blake } 5800a982b1bSEric Blake 581c216e5adSMichael Roth fh = gfh->fh; 582c216e5adSMichael Roth ret = fseek(fh, offset, whence); 583c216e5adSMichael Roth if (ret == -1) { 58477dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to seek file"); 585895b00f6SMarc-André Lureau if (errno == ESPIPE) { 586895b00f6SMarc-André Lureau /* file is non-seekable, stdio shouldn't be buffering anyways */ 587895b00f6SMarc-André Lureau gfh->state = RW_STATE_NEW; 588895b00f6SMarc-André Lureau } 589c216e5adSMichael Roth } else { 59010b7c5ddSMarkus Armbruster seek_data = g_new0(GuestFileSeek, 1); 591c216e5adSMichael Roth seek_data->position = ftell(fh); 592c216e5adSMichael Roth seek_data->eof = feof(fh); 593895b00f6SMarc-André Lureau gfh->state = RW_STATE_NEW; 594c216e5adSMichael Roth } 595c216e5adSMichael Roth clearerr(fh); 596c216e5adSMichael Roth 597c216e5adSMichael Roth return seek_data; 598c216e5adSMichael Roth } 599c216e5adSMichael Roth 60077dbc81bSMarkus Armbruster void qmp_guest_file_flush(int64_t handle, Error **errp) 601c216e5adSMichael Roth { 60277dbc81bSMarkus Armbruster GuestFileHandle *gfh = guest_file_handle_find(handle, errp); 603c216e5adSMichael Roth FILE *fh; 604c216e5adSMichael Roth int ret; 605c216e5adSMichael Roth 606c216e5adSMichael Roth if (!gfh) { 607c216e5adSMichael Roth return; 608c216e5adSMichael Roth } 609c216e5adSMichael Roth 610c216e5adSMichael Roth fh = gfh->fh; 611c216e5adSMichael Roth ret = fflush(fh); 612c216e5adSMichael Roth if (ret == EOF) { 61377dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to flush file"); 614895b00f6SMarc-André Lureau } else { 615895b00f6SMarc-André Lureau gfh->state = RW_STATE_NEW; 616c216e5adSMichael Roth } 617c216e5adSMichael Roth } 618c216e5adSMichael Roth 619e72c3f2eSMichael Roth /* linux-specific implementations. avoid this if at all possible. */ 620e72c3f2eSMichael Roth #if defined(__linux__) 621e72c3f2eSMichael Roth 622eab5fd59SPaolo Bonzini #if defined(CONFIG_FSFREEZE) || defined(CONFIG_FSTRIM) 623af02203fSPaolo Bonzini typedef struct FsMount { 624c216e5adSMichael Roth char *dirname; 625c216e5adSMichael Roth char *devtype; 62646d4c572STomoki Sekiyama unsigned int devmajor, devminor; 627af02203fSPaolo Bonzini QTAILQ_ENTRY(FsMount) next; 628af02203fSPaolo Bonzini } FsMount; 629c216e5adSMichael Roth 630e5d9adbdSTomoki Sekiyama typedef QTAILQ_HEAD(FsMountList, FsMount) FsMountList; 6319e8aded4SMichael Roth 632af02203fSPaolo Bonzini static void free_fs_mount_list(FsMountList *mounts) 633c216e5adSMichael Roth { 634af02203fSPaolo Bonzini FsMount *mount, *temp; 635c216e5adSMichael Roth 6369e8aded4SMichael Roth if (!mounts) { 6379e8aded4SMichael Roth return; 6389e8aded4SMichael Roth } 6399e8aded4SMichael Roth 6409e8aded4SMichael Roth QTAILQ_FOREACH_SAFE(mount, mounts, next, temp) { 6419e8aded4SMichael Roth QTAILQ_REMOVE(mounts, mount, next); 642c216e5adSMichael Roth g_free(mount->dirname); 643c216e5adSMichael Roth g_free(mount->devtype); 644c216e5adSMichael Roth g_free(mount); 645c216e5adSMichael Roth } 6469e8aded4SMichael Roth } 6479e8aded4SMichael Roth 64846d4c572STomoki Sekiyama static int dev_major_minor(const char *devpath, 64946d4c572STomoki Sekiyama unsigned int *devmajor, unsigned int *devminor) 65046d4c572STomoki Sekiyama { 65146d4c572STomoki Sekiyama struct stat st; 65246d4c572STomoki Sekiyama 65346d4c572STomoki Sekiyama *devmajor = 0; 65446d4c572STomoki Sekiyama *devminor = 0; 65546d4c572STomoki Sekiyama 65646d4c572STomoki Sekiyama if (stat(devpath, &st) < 0) { 65746d4c572STomoki Sekiyama slog("failed to stat device file '%s': %s", devpath, strerror(errno)); 65846d4c572STomoki Sekiyama return -1; 65946d4c572STomoki Sekiyama } 66046d4c572STomoki Sekiyama if (S_ISDIR(st.st_mode)) { 66146d4c572STomoki Sekiyama /* It is bind mount */ 66246d4c572STomoki Sekiyama return -2; 66346d4c572STomoki Sekiyama } 66446d4c572STomoki Sekiyama if (S_ISBLK(st.st_mode)) { 66546d4c572STomoki Sekiyama *devmajor = major(st.st_rdev); 66646d4c572STomoki Sekiyama *devminor = minor(st.st_rdev); 66746d4c572STomoki Sekiyama return 0; 66846d4c572STomoki Sekiyama } 66946d4c572STomoki Sekiyama return -1; 67046d4c572STomoki Sekiyama } 67146d4c572STomoki Sekiyama 6729e8aded4SMichael Roth /* 6739e8aded4SMichael Roth * Walk the mount table and build a list of local file systems 6749e8aded4SMichael Roth */ 67546d4c572STomoki Sekiyama static void build_fs_mount_list_from_mtab(FsMountList *mounts, Error **errp) 6769e8aded4SMichael Roth { 6779e8aded4SMichael Roth struct mntent *ment; 678af02203fSPaolo Bonzini FsMount *mount; 6799e2fa418SMichael Roth char const *mtab = "/proc/self/mounts"; 6809e8aded4SMichael Roth FILE *fp; 68146d4c572STomoki Sekiyama unsigned int devmajor, devminor; 682c216e5adSMichael Roth 683c216e5adSMichael Roth fp = setmntent(mtab, "r"); 684c216e5adSMichael Roth if (!fp) { 68577dbc81bSMarkus Armbruster error_setg(errp, "failed to open mtab file: '%s'", mtab); 686261551d1SLuiz Capitulino return; 687c216e5adSMichael Roth } 688c216e5adSMichael Roth 689c216e5adSMichael Roth while ((ment = getmntent(fp))) { 690c216e5adSMichael Roth /* 691c216e5adSMichael Roth * An entry which device name doesn't start with a '/' is 692c216e5adSMichael Roth * either a dummy file system or a network file system. 693c216e5adSMichael Roth * Add special handling for smbfs and cifs as is done by 694c216e5adSMichael Roth * coreutils as well. 695c216e5adSMichael Roth */ 696c216e5adSMichael Roth if ((ment->mnt_fsname[0] != '/') || 697c216e5adSMichael Roth (strcmp(ment->mnt_type, "smbfs") == 0) || 698c216e5adSMichael Roth (strcmp(ment->mnt_type, "cifs") == 0)) { 699c216e5adSMichael Roth continue; 700c216e5adSMichael Roth } 70146d4c572STomoki Sekiyama if (dev_major_minor(ment->mnt_fsname, &devmajor, &devminor) == -2) { 70246d4c572STomoki Sekiyama /* Skip bind mounts */ 70346d4c572STomoki Sekiyama continue; 70446d4c572STomoki Sekiyama } 705c216e5adSMichael Roth 706f3a06403SMarkus Armbruster mount = g_new0(FsMount, 1); 707c216e5adSMichael Roth mount->dirname = g_strdup(ment->mnt_dir); 708c216e5adSMichael Roth mount->devtype = g_strdup(ment->mnt_type); 70946d4c572STomoki Sekiyama mount->devmajor = devmajor; 71046d4c572STomoki Sekiyama mount->devminor = devminor; 711c216e5adSMichael Roth 7129e8aded4SMichael Roth QTAILQ_INSERT_TAIL(mounts, mount, next); 713c216e5adSMichael Roth } 714c216e5adSMichael Roth 715c216e5adSMichael Roth endmntent(fp); 716c216e5adSMichael Roth } 71746d4c572STomoki Sekiyama 71846d4c572STomoki Sekiyama static void decode_mntname(char *name, int len) 71946d4c572STomoki Sekiyama { 72046d4c572STomoki Sekiyama int i, j = 0; 72146d4c572STomoki Sekiyama for (i = 0; i <= len; i++) { 72246d4c572STomoki Sekiyama if (name[i] != '\\') { 72346d4c572STomoki Sekiyama name[j++] = name[i]; 72446d4c572STomoki Sekiyama } else if (name[i + 1] == '\\') { 72546d4c572STomoki Sekiyama name[j++] = '\\'; 72646d4c572STomoki Sekiyama i++; 72746d4c572STomoki Sekiyama } else if (name[i + 1] >= '0' && name[i + 1] <= '3' && 72846d4c572STomoki Sekiyama name[i + 2] >= '0' && name[i + 2] <= '7' && 72946d4c572STomoki Sekiyama name[i + 3] >= '0' && name[i + 3] <= '7') { 73046d4c572STomoki Sekiyama name[j++] = (name[i + 1] - '0') * 64 + 73146d4c572STomoki Sekiyama (name[i + 2] - '0') * 8 + 73246d4c572STomoki Sekiyama (name[i + 3] - '0'); 73346d4c572STomoki Sekiyama i += 3; 73446d4c572STomoki Sekiyama } else { 73546d4c572STomoki Sekiyama name[j++] = name[i]; 73646d4c572STomoki Sekiyama } 73746d4c572STomoki Sekiyama } 73846d4c572STomoki Sekiyama } 73946d4c572STomoki Sekiyama 74046d4c572STomoki Sekiyama static void build_fs_mount_list(FsMountList *mounts, Error **errp) 74146d4c572STomoki Sekiyama { 74246d4c572STomoki Sekiyama FsMount *mount; 74346d4c572STomoki Sekiyama char const *mountinfo = "/proc/self/mountinfo"; 74446d4c572STomoki Sekiyama FILE *fp; 74546d4c572STomoki Sekiyama char *line = NULL, *dash; 74646d4c572STomoki Sekiyama size_t n; 74746d4c572STomoki Sekiyama char check; 74846d4c572STomoki Sekiyama unsigned int devmajor, devminor; 74946d4c572STomoki Sekiyama int ret, dir_s, dir_e, type_s, type_e, dev_s, dev_e; 75046d4c572STomoki Sekiyama 75146d4c572STomoki Sekiyama fp = fopen(mountinfo, "r"); 75246d4c572STomoki Sekiyama if (!fp) { 75346d4c572STomoki Sekiyama build_fs_mount_list_from_mtab(mounts, errp); 75446d4c572STomoki Sekiyama return; 75546d4c572STomoki Sekiyama } 75646d4c572STomoki Sekiyama 75746d4c572STomoki Sekiyama while (getline(&line, &n, fp) != -1) { 75846d4c572STomoki Sekiyama ret = sscanf(line, "%*u %*u %u:%u %*s %n%*s%n%c", 75946d4c572STomoki Sekiyama &devmajor, &devminor, &dir_s, &dir_e, &check); 76046d4c572STomoki Sekiyama if (ret < 3) { 76146d4c572STomoki Sekiyama continue; 76246d4c572STomoki Sekiyama } 76346d4c572STomoki Sekiyama dash = strstr(line + dir_e, " - "); 76446d4c572STomoki Sekiyama if (!dash) { 76546d4c572STomoki Sekiyama continue; 76646d4c572STomoki Sekiyama } 76746d4c572STomoki Sekiyama ret = sscanf(dash, " - %n%*s%n %n%*s%n%c", 76846d4c572STomoki Sekiyama &type_s, &type_e, &dev_s, &dev_e, &check); 76946d4c572STomoki Sekiyama if (ret < 1) { 77046d4c572STomoki Sekiyama continue; 77146d4c572STomoki Sekiyama } 77246d4c572STomoki Sekiyama line[dir_e] = 0; 77346d4c572STomoki Sekiyama dash[type_e] = 0; 77446d4c572STomoki Sekiyama dash[dev_e] = 0; 77546d4c572STomoki Sekiyama decode_mntname(line + dir_s, dir_e - dir_s); 77646d4c572STomoki Sekiyama decode_mntname(dash + dev_s, dev_e - dev_s); 77746d4c572STomoki Sekiyama if (devmajor == 0) { 77846d4c572STomoki Sekiyama /* btrfs reports major number = 0 */ 77946d4c572STomoki Sekiyama if (strcmp("btrfs", dash + type_s) != 0 || 78046d4c572STomoki Sekiyama dev_major_minor(dash + dev_s, &devmajor, &devminor) < 0) { 78146d4c572STomoki Sekiyama continue; 78246d4c572STomoki Sekiyama } 78346d4c572STomoki Sekiyama } 78446d4c572STomoki Sekiyama 785f3a06403SMarkus Armbruster mount = g_new0(FsMount, 1); 78646d4c572STomoki Sekiyama mount->dirname = g_strdup(line + dir_s); 78746d4c572STomoki Sekiyama mount->devtype = g_strdup(dash + type_s); 78846d4c572STomoki Sekiyama mount->devmajor = devmajor; 78946d4c572STomoki Sekiyama mount->devminor = devminor; 79046d4c572STomoki Sekiyama 79146d4c572STomoki Sekiyama QTAILQ_INSERT_TAIL(mounts, mount, next); 79246d4c572STomoki Sekiyama } 79346d4c572STomoki Sekiyama free(line); 79446d4c572STomoki Sekiyama 79546d4c572STomoki Sekiyama fclose(fp); 79646d4c572STomoki Sekiyama } 797eab5fd59SPaolo Bonzini #endif 798eab5fd59SPaolo Bonzini 799eab5fd59SPaolo Bonzini #if defined(CONFIG_FSFREEZE) 800c216e5adSMichael Roth 80146d4c572STomoki Sekiyama static char *get_pci_driver(char const *syspath, int pathlen, Error **errp) 80246d4c572STomoki Sekiyama { 80346d4c572STomoki Sekiyama char *path; 80446d4c572STomoki Sekiyama char *dpath; 80546d4c572STomoki Sekiyama char *driver = NULL; 80646d4c572STomoki Sekiyama char buf[PATH_MAX]; 80746d4c572STomoki Sekiyama ssize_t len; 80846d4c572STomoki Sekiyama 80946d4c572STomoki Sekiyama path = g_strndup(syspath, pathlen); 81046d4c572STomoki Sekiyama dpath = g_strdup_printf("%s/driver", path); 81146d4c572STomoki Sekiyama len = readlink(dpath, buf, sizeof(buf) - 1); 81246d4c572STomoki Sekiyama if (len != -1) { 81346d4c572STomoki Sekiyama buf[len] = 0; 8143e015d81SJulia Suvorova driver = g_path_get_basename(buf); 81546d4c572STomoki Sekiyama } 81646d4c572STomoki Sekiyama g_free(dpath); 81746d4c572STomoki Sekiyama g_free(path); 81846d4c572STomoki Sekiyama return driver; 81946d4c572STomoki Sekiyama } 82046d4c572STomoki Sekiyama 82146d4c572STomoki Sekiyama static int compare_uint(const void *_a, const void *_b) 82246d4c572STomoki Sekiyama { 82346d4c572STomoki Sekiyama unsigned int a = *(unsigned int *)_a; 82446d4c572STomoki Sekiyama unsigned int b = *(unsigned int *)_b; 82546d4c572STomoki Sekiyama 82646d4c572STomoki Sekiyama return a < b ? -1 : a > b ? 1 : 0; 82746d4c572STomoki Sekiyama } 82846d4c572STomoki Sekiyama 82946d4c572STomoki Sekiyama /* Walk the specified sysfs and build a sorted list of host or ata numbers */ 83046d4c572STomoki Sekiyama static int build_hosts(char const *syspath, char const *host, bool ata, 83146d4c572STomoki Sekiyama unsigned int *hosts, int hosts_max, Error **errp) 83246d4c572STomoki Sekiyama { 83346d4c572STomoki Sekiyama char *path; 83446d4c572STomoki Sekiyama DIR *dir; 83546d4c572STomoki Sekiyama struct dirent *entry; 83646d4c572STomoki Sekiyama int i = 0; 83746d4c572STomoki Sekiyama 83846d4c572STomoki Sekiyama path = g_strndup(syspath, host - syspath); 83946d4c572STomoki Sekiyama dir = opendir(path); 84046d4c572STomoki Sekiyama if (!dir) { 84146d4c572STomoki Sekiyama error_setg_errno(errp, errno, "opendir(\"%s\")", path); 84246d4c572STomoki Sekiyama g_free(path); 84346d4c572STomoki Sekiyama return -1; 84446d4c572STomoki Sekiyama } 84546d4c572STomoki Sekiyama 84646d4c572STomoki Sekiyama while (i < hosts_max) { 84746d4c572STomoki Sekiyama entry = readdir(dir); 84846d4c572STomoki Sekiyama if (!entry) { 84946d4c572STomoki Sekiyama break; 85046d4c572STomoki Sekiyama } 85146d4c572STomoki Sekiyama if (ata && sscanf(entry->d_name, "ata%d", hosts + i) == 1) { 85246d4c572STomoki Sekiyama ++i; 85346d4c572STomoki Sekiyama } else if (!ata && sscanf(entry->d_name, "host%d", hosts + i) == 1) { 85446d4c572STomoki Sekiyama ++i; 85546d4c572STomoki Sekiyama } 85646d4c572STomoki Sekiyama } 85746d4c572STomoki Sekiyama 85846d4c572STomoki Sekiyama qsort(hosts, i, sizeof(hosts[0]), compare_uint); 85946d4c572STomoki Sekiyama 86046d4c572STomoki Sekiyama g_free(path); 86146d4c572STomoki Sekiyama closedir(dir); 86246d4c572STomoki Sekiyama return i; 86346d4c572STomoki Sekiyama } 86446d4c572STomoki Sekiyama 865d9fe4f0fSThomas Huth /* 866d9fe4f0fSThomas Huth * Store disk device info for devices on the PCI bus. 867d9fe4f0fSThomas Huth * Returns true if information has been stored, or false for failure. 868d9fe4f0fSThomas Huth */ 869d9fe4f0fSThomas Huth static bool build_guest_fsinfo_for_pci_dev(char const *syspath, 870d9fe4f0fSThomas Huth GuestDiskAddress *disk, 87146d4c572STomoki Sekiyama Error **errp) 87246d4c572STomoki Sekiyama { 87346d4c572STomoki Sekiyama unsigned int pci[4], host, hosts[8], tgt[3]; 87446d4c572STomoki Sekiyama int i, nhosts = 0, pcilen; 875d9fe4f0fSThomas Huth GuestPCIAddress *pciaddr = disk->pci_controller; 87646d4c572STomoki Sekiyama bool has_ata = false, has_host = false, has_tgt = false; 87746d4c572STomoki Sekiyama char *p, *q, *driver = NULL; 878d9fe4f0fSThomas Huth bool ret = false; 87946d4c572STomoki Sekiyama 88046d4c572STomoki Sekiyama p = strstr(syspath, "/devices/pci"); 88146d4c572STomoki Sekiyama if (!p || sscanf(p + 12, "%*x:%*x/%x:%x:%x.%x%n", 88246d4c572STomoki Sekiyama pci, pci + 1, pci + 2, pci + 3, &pcilen) < 4) { 883743c71d0SMarc-André Lureau g_debug("only pci device is supported: sysfs path '%s'", syspath); 884d9fe4f0fSThomas Huth return false; 88546d4c572STomoki Sekiyama } 88646d4c572STomoki Sekiyama 887743c71d0SMarc-André Lureau p += 12 + pcilen; 888743c71d0SMarc-André Lureau while (true) { 889743c71d0SMarc-André Lureau driver = get_pci_driver(syspath, p - syspath, errp); 890743c71d0SMarc-André Lureau if (driver && (g_str_equal(driver, "ata_piix") || 891743c71d0SMarc-André Lureau g_str_equal(driver, "sym53c8xx") || 892743c71d0SMarc-André Lureau g_str_equal(driver, "virtio-pci") || 893743c71d0SMarc-André Lureau g_str_equal(driver, "ahci"))) { 894743c71d0SMarc-André Lureau break; 895743c71d0SMarc-André Lureau } 896743c71d0SMarc-André Lureau 897bb23a736SMarc-André Lureau g_free(driver); 898743c71d0SMarc-André Lureau if (sscanf(p, "/%x:%x:%x.%x%n", 899743c71d0SMarc-André Lureau pci, pci + 1, pci + 2, pci + 3, &pcilen) == 4) { 900743c71d0SMarc-André Lureau p += pcilen; 901743c71d0SMarc-André Lureau continue; 902743c71d0SMarc-André Lureau } 903743c71d0SMarc-André Lureau 904743c71d0SMarc-André Lureau g_debug("unsupported driver or sysfs path '%s'", syspath); 905d9fe4f0fSThomas Huth return false; 90646d4c572STomoki Sekiyama } 90746d4c572STomoki Sekiyama 90846d4c572STomoki Sekiyama p = strstr(syspath, "/target"); 90946d4c572STomoki Sekiyama if (p && sscanf(p + 7, "%*u:%*u:%*u/%*u:%u:%u:%u", 91046d4c572STomoki Sekiyama tgt, tgt + 1, tgt + 2) == 3) { 91146d4c572STomoki Sekiyama has_tgt = true; 91246d4c572STomoki Sekiyama } 91346d4c572STomoki Sekiyama 91446d4c572STomoki Sekiyama p = strstr(syspath, "/ata"); 91546d4c572STomoki Sekiyama if (p) { 91646d4c572STomoki Sekiyama q = p + 4; 91746d4c572STomoki Sekiyama has_ata = true; 91846d4c572STomoki Sekiyama } else { 91946d4c572STomoki Sekiyama p = strstr(syspath, "/host"); 92046d4c572STomoki Sekiyama q = p + 5; 92146d4c572STomoki Sekiyama } 92246d4c572STomoki Sekiyama if (p && sscanf(q, "%u", &host) == 1) { 92346d4c572STomoki Sekiyama has_host = true; 92446d4c572STomoki Sekiyama nhosts = build_hosts(syspath, p, has_ata, hosts, 92501a6df1bSPhilippe Mathieu-Daudé ARRAY_SIZE(hosts), errp); 92646d4c572STomoki Sekiyama if (nhosts < 0) { 92746d4c572STomoki Sekiyama goto cleanup; 92846d4c572STomoki Sekiyama } 92946d4c572STomoki Sekiyama } 93046d4c572STomoki Sekiyama 93146d4c572STomoki Sekiyama pciaddr->domain = pci[0]; 93246d4c572STomoki Sekiyama pciaddr->bus = pci[1]; 93346d4c572STomoki Sekiyama pciaddr->slot = pci[2]; 93446d4c572STomoki Sekiyama pciaddr->function = pci[3]; 93546d4c572STomoki Sekiyama 93646d4c572STomoki Sekiyama if (strcmp(driver, "ata_piix") == 0) { 93746d4c572STomoki Sekiyama /* a host per ide bus, target*:0:<unit>:0 */ 93846d4c572STomoki Sekiyama if (!has_host || !has_tgt) { 93946d4c572STomoki Sekiyama g_debug("invalid sysfs path '%s' (driver '%s')", syspath, driver); 94046d4c572STomoki Sekiyama goto cleanup; 94146d4c572STomoki Sekiyama } 94246d4c572STomoki Sekiyama for (i = 0; i < nhosts; i++) { 94346d4c572STomoki Sekiyama if (host == hosts[i]) { 94446d4c572STomoki Sekiyama disk->bus_type = GUEST_DISK_BUS_TYPE_IDE; 94546d4c572STomoki Sekiyama disk->bus = i; 94646d4c572STomoki Sekiyama disk->unit = tgt[1]; 94746d4c572STomoki Sekiyama break; 94846d4c572STomoki Sekiyama } 94946d4c572STomoki Sekiyama } 95046d4c572STomoki Sekiyama if (i >= nhosts) { 95146d4c572STomoki Sekiyama g_debug("no host for '%s' (driver '%s')", syspath, driver); 95246d4c572STomoki Sekiyama goto cleanup; 95346d4c572STomoki Sekiyama } 95446d4c572STomoki Sekiyama } else if (strcmp(driver, "sym53c8xx") == 0) { 95546d4c572STomoki Sekiyama /* scsi(LSI Logic): target*:0:<unit>:0 */ 95646d4c572STomoki Sekiyama if (!has_tgt) { 95746d4c572STomoki Sekiyama g_debug("invalid sysfs path '%s' (driver '%s')", syspath, driver); 95846d4c572STomoki Sekiyama goto cleanup; 95946d4c572STomoki Sekiyama } 96046d4c572STomoki Sekiyama disk->bus_type = GUEST_DISK_BUS_TYPE_SCSI; 96146d4c572STomoki Sekiyama disk->unit = tgt[1]; 96246d4c572STomoki Sekiyama } else if (strcmp(driver, "virtio-pci") == 0) { 96346d4c572STomoki Sekiyama if (has_tgt) { 96446d4c572STomoki Sekiyama /* virtio-scsi: target*:0:0:<unit> */ 96546d4c572STomoki Sekiyama disk->bus_type = GUEST_DISK_BUS_TYPE_SCSI; 96646d4c572STomoki Sekiyama disk->unit = tgt[2]; 96746d4c572STomoki Sekiyama } else { 96846d4c572STomoki Sekiyama /* virtio-blk: 1 disk per 1 device */ 96946d4c572STomoki Sekiyama disk->bus_type = GUEST_DISK_BUS_TYPE_VIRTIO; 97046d4c572STomoki Sekiyama } 97146d4c572STomoki Sekiyama } else if (strcmp(driver, "ahci") == 0) { 97246d4c572STomoki Sekiyama /* ahci: 1 host per 1 unit */ 97346d4c572STomoki Sekiyama if (!has_host || !has_tgt) { 97446d4c572STomoki Sekiyama g_debug("invalid sysfs path '%s' (driver '%s')", syspath, driver); 97546d4c572STomoki Sekiyama goto cleanup; 97646d4c572STomoki Sekiyama } 97746d4c572STomoki Sekiyama for (i = 0; i < nhosts; i++) { 97846d4c572STomoki Sekiyama if (host == hosts[i]) { 97946d4c572STomoki Sekiyama disk->unit = i; 98046d4c572STomoki Sekiyama disk->bus_type = GUEST_DISK_BUS_TYPE_SATA; 98146d4c572STomoki Sekiyama break; 98246d4c572STomoki Sekiyama } 98346d4c572STomoki Sekiyama } 98446d4c572STomoki Sekiyama if (i >= nhosts) { 98546d4c572STomoki Sekiyama g_debug("no host for '%s' (driver '%s')", syspath, driver); 98646d4c572STomoki Sekiyama goto cleanup; 98746d4c572STomoki Sekiyama } 98846d4c572STomoki Sekiyama } else { 98946d4c572STomoki Sekiyama g_debug("unknown driver '%s' (sysfs path '%s')", driver, syspath); 99046d4c572STomoki Sekiyama goto cleanup; 99146d4c572STomoki Sekiyama } 99246d4c572STomoki Sekiyama 993d9fe4f0fSThomas Huth ret = true; 99446d4c572STomoki Sekiyama 99546d4c572STomoki Sekiyama cleanup: 99646d4c572STomoki Sekiyama g_free(driver); 997d9fe4f0fSThomas Huth return ret; 998d9fe4f0fSThomas Huth } 999d9fe4f0fSThomas Huth 100023843c12SThomas Huth /* 100123843c12SThomas Huth * Store disk device info for non-PCI virtio devices (for example s390x 100223843c12SThomas Huth * channel I/O devices). Returns true if information has been stored, or 100323843c12SThomas Huth * false for failure. 100423843c12SThomas Huth */ 100523843c12SThomas Huth static bool build_guest_fsinfo_for_nonpci_virtio(char const *syspath, 100623843c12SThomas Huth GuestDiskAddress *disk, 100723843c12SThomas Huth Error **errp) 100823843c12SThomas Huth { 100923843c12SThomas Huth unsigned int tgt[3]; 101023843c12SThomas Huth char *p; 101123843c12SThomas Huth 101223843c12SThomas Huth if (!strstr(syspath, "/virtio") || !strstr(syspath, "/block")) { 101323843c12SThomas Huth g_debug("Unsupported virtio device '%s'", syspath); 101423843c12SThomas Huth return false; 101523843c12SThomas Huth } 101623843c12SThomas Huth 101723843c12SThomas Huth p = strstr(syspath, "/target"); 101823843c12SThomas Huth if (p && sscanf(p + 7, "%*u:%*u:%*u/%*u:%u:%u:%u", 101923843c12SThomas Huth &tgt[0], &tgt[1], &tgt[2]) == 3) { 102023843c12SThomas Huth /* virtio-scsi: target*:0:<target>:<unit> */ 102123843c12SThomas Huth disk->bus_type = GUEST_DISK_BUS_TYPE_SCSI; 102223843c12SThomas Huth disk->bus = tgt[0]; 102323843c12SThomas Huth disk->target = tgt[1]; 102423843c12SThomas Huth disk->unit = tgt[2]; 102523843c12SThomas Huth } else { 102623843c12SThomas Huth /* virtio-blk: 1 disk per 1 device */ 102723843c12SThomas Huth disk->bus_type = GUEST_DISK_BUS_TYPE_VIRTIO; 102823843c12SThomas Huth } 102923843c12SThomas Huth 103023843c12SThomas Huth return true; 103123843c12SThomas Huth } 103223843c12SThomas Huth 10335b723a5dSThomas Huth /* 10345b723a5dSThomas Huth * Store disk device info for CCW devices (s390x channel I/O devices). 10355b723a5dSThomas Huth * Returns true if information has been stored, or false for failure. 10365b723a5dSThomas Huth */ 10375b723a5dSThomas Huth static bool build_guest_fsinfo_for_ccw_dev(char const *syspath, 10385b723a5dSThomas Huth GuestDiskAddress *disk, 10395b723a5dSThomas Huth Error **errp) 10405b723a5dSThomas Huth { 10415b723a5dSThomas Huth unsigned int cssid, ssid, subchno, devno; 10425b723a5dSThomas Huth char *p; 10435b723a5dSThomas Huth 10445b723a5dSThomas Huth p = strstr(syspath, "/devices/css"); 10455b723a5dSThomas Huth if (!p || sscanf(p + 12, "%*x/%x.%x.%x/%*x.%*x.%x/", 10465b723a5dSThomas Huth &cssid, &ssid, &subchno, &devno) < 4) { 10475b723a5dSThomas Huth g_debug("could not parse ccw device sysfs path: %s", syspath); 10485b723a5dSThomas Huth return false; 10495b723a5dSThomas Huth } 10505b723a5dSThomas Huth 10515b723a5dSThomas Huth disk->has_ccw_address = true; 10525b723a5dSThomas Huth disk->ccw_address = g_new0(GuestCCWAddress, 1); 10535b723a5dSThomas Huth disk->ccw_address->cssid = cssid; 10545b723a5dSThomas Huth disk->ccw_address->ssid = ssid; 10555b723a5dSThomas Huth disk->ccw_address->subchno = subchno; 10565b723a5dSThomas Huth disk->ccw_address->devno = devno; 10575b723a5dSThomas Huth 10585b723a5dSThomas Huth if (strstr(p, "/virtio")) { 10595b723a5dSThomas Huth build_guest_fsinfo_for_nonpci_virtio(syspath, disk, errp); 10605b723a5dSThomas Huth } 10615b723a5dSThomas Huth 10625b723a5dSThomas Huth return true; 10635b723a5dSThomas Huth } 10645b723a5dSThomas Huth 1065d9fe4f0fSThomas Huth /* Store disk device info specified by @sysfs into @fs */ 1066d9fe4f0fSThomas Huth static void build_guest_fsinfo_for_real_device(char const *syspath, 1067d9fe4f0fSThomas Huth GuestFilesystemInfo *fs, 1068d9fe4f0fSThomas Huth Error **errp) 1069d9fe4f0fSThomas Huth { 1070d9fe4f0fSThomas Huth GuestDiskAddress *disk; 1071d9fe4f0fSThomas Huth GuestPCIAddress *pciaddr; 1072d9fe4f0fSThomas Huth bool has_hwinf; 107343dadc43SThomas Huth #ifdef CONFIG_LIBUDEV 107443dadc43SThomas Huth struct udev *udev = NULL; 107543dadc43SThomas Huth struct udev_device *udevice = NULL; 107643dadc43SThomas Huth #endif 1077d9fe4f0fSThomas Huth 1078d9fe4f0fSThomas Huth pciaddr = g_new0(GuestPCIAddress, 1); 107943dadc43SThomas Huth pciaddr->domain = -1; /* -1 means field is invalid */ 108043dadc43SThomas Huth pciaddr->bus = -1; 108143dadc43SThomas Huth pciaddr->slot = -1; 108243dadc43SThomas Huth pciaddr->function = -1; 1083d9fe4f0fSThomas Huth 1084d9fe4f0fSThomas Huth disk = g_new0(GuestDiskAddress, 1); 1085d9fe4f0fSThomas Huth disk->pci_controller = pciaddr; 108643dadc43SThomas Huth disk->bus_type = GUEST_DISK_BUS_TYPE_UNKNOWN; 1087d9fe4f0fSThomas Huth 108843dadc43SThomas Huth #ifdef CONFIG_LIBUDEV 108943dadc43SThomas Huth udev = udev_new(); 109043dadc43SThomas Huth udevice = udev_device_new_from_syspath(udev, syspath); 109143dadc43SThomas Huth if (udev == NULL || udevice == NULL) { 109243dadc43SThomas Huth g_debug("failed to query udev"); 109343dadc43SThomas Huth } else { 109443dadc43SThomas Huth const char *devnode, *serial; 109543dadc43SThomas Huth devnode = udev_device_get_devnode(udevice); 109643dadc43SThomas Huth if (devnode != NULL) { 109743dadc43SThomas Huth disk->dev = g_strdup(devnode); 109843dadc43SThomas Huth disk->has_dev = true; 109943dadc43SThomas Huth } 110043dadc43SThomas Huth serial = udev_device_get_property_value(udevice, "ID_SERIAL"); 110143dadc43SThomas Huth if (serial != NULL && *serial != 0) { 110243dadc43SThomas Huth disk->serial = g_strdup(serial); 110343dadc43SThomas Huth disk->has_serial = true; 110443dadc43SThomas Huth } 110543dadc43SThomas Huth } 110643dadc43SThomas Huth 110743dadc43SThomas Huth udev_unref(udev); 110843dadc43SThomas Huth udev_device_unref(udevice); 110943dadc43SThomas Huth #endif 111043dadc43SThomas Huth 111123843c12SThomas Huth if (strstr(syspath, "/devices/pci")) { 1112d9fe4f0fSThomas Huth has_hwinf = build_guest_fsinfo_for_pci_dev(syspath, disk, errp); 11135b723a5dSThomas Huth } else if (strstr(syspath, "/devices/css")) { 11145b723a5dSThomas Huth has_hwinf = build_guest_fsinfo_for_ccw_dev(syspath, disk, errp); 111523843c12SThomas Huth } else if (strstr(syspath, "/virtio")) { 111623843c12SThomas Huth has_hwinf = build_guest_fsinfo_for_nonpci_virtio(syspath, disk, errp); 111723843c12SThomas Huth } else { 111823843c12SThomas Huth g_debug("Unsupported device type for '%s'", syspath); 111923843c12SThomas Huth has_hwinf = false; 112023843c12SThomas Huth } 1121d9fe4f0fSThomas Huth 112243dadc43SThomas Huth if (has_hwinf || disk->has_dev || disk->has_serial) { 112354aa3de7SEric Blake QAPI_LIST_PREPEND(fs->disk, disk); 1124d9fe4f0fSThomas Huth } else { 112554aa3de7SEric Blake qapi_free_GuestDiskAddress(disk); 1126d9fe4f0fSThomas Huth } 112746d4c572STomoki Sekiyama } 112846d4c572STomoki Sekiyama 112946d4c572STomoki Sekiyama static void build_guest_fsinfo_for_device(char const *devpath, 113046d4c572STomoki Sekiyama GuestFilesystemInfo *fs, 113146d4c572STomoki Sekiyama Error **errp); 113246d4c572STomoki Sekiyama 113346d4c572STomoki Sekiyama /* Store a list of slave devices of virtual volume specified by @syspath into 113446d4c572STomoki Sekiyama * @fs */ 113546d4c572STomoki Sekiyama static void build_guest_fsinfo_for_virtual_device(char const *syspath, 113646d4c572STomoki Sekiyama GuestFilesystemInfo *fs, 113746d4c572STomoki Sekiyama Error **errp) 113846d4c572STomoki Sekiyama { 1139292743d9SMarkus Armbruster Error *err = NULL; 114046d4c572STomoki Sekiyama DIR *dir; 114146d4c572STomoki Sekiyama char *dirpath; 1142e668d1b8Szhanghailiang struct dirent *entry; 114346d4c572STomoki Sekiyama 114446d4c572STomoki Sekiyama dirpath = g_strdup_printf("%s/slaves", syspath); 114546d4c572STomoki Sekiyama dir = opendir(dirpath); 114646d4c572STomoki Sekiyama if (!dir) { 11478251a72fSMichael Roth if (errno != ENOENT) { 114846d4c572STomoki Sekiyama error_setg_errno(errp, errno, "opendir(\"%s\")", dirpath); 11498251a72fSMichael Roth } 115046d4c572STomoki Sekiyama g_free(dirpath); 115146d4c572STomoki Sekiyama return; 115246d4c572STomoki Sekiyama } 115346d4c572STomoki Sekiyama 115446d4c572STomoki Sekiyama for (;;) { 1155e668d1b8Szhanghailiang errno = 0; 1156e668d1b8Szhanghailiang entry = readdir(dir); 1157e668d1b8Szhanghailiang if (entry == NULL) { 1158e668d1b8Szhanghailiang if (errno) { 1159e668d1b8Szhanghailiang error_setg_errno(errp, errno, "readdir(\"%s\")", dirpath); 116046d4c572STomoki Sekiyama } 116146d4c572STomoki Sekiyama break; 116246d4c572STomoki Sekiyama } 116346d4c572STomoki Sekiyama 1164e668d1b8Szhanghailiang if (entry->d_type == DT_LNK) { 1165e668d1b8Szhanghailiang char *path; 1166e668d1b8Szhanghailiang 1167e668d1b8Szhanghailiang g_debug(" slave device '%s'", entry->d_name); 1168e668d1b8Szhanghailiang path = g_strdup_printf("%s/slaves/%s", syspath, entry->d_name); 1169292743d9SMarkus Armbruster build_guest_fsinfo_for_device(path, fs, &err); 1170e668d1b8Szhanghailiang g_free(path); 117146d4c572STomoki Sekiyama 1172292743d9SMarkus Armbruster if (err) { 1173292743d9SMarkus Armbruster error_propagate(errp, err); 117446d4c572STomoki Sekiyama break; 117546d4c572STomoki Sekiyama } 117646d4c572STomoki Sekiyama } 117746d4c572STomoki Sekiyama } 117846d4c572STomoki Sekiyama 1179e668d1b8Szhanghailiang g_free(dirpath); 118046d4c572STomoki Sekiyama closedir(dir); 118146d4c572STomoki Sekiyama } 118246d4c572STomoki Sekiyama 1183fed39564STomáš Golembiovský static bool is_disk_virtual(const char *devpath, Error **errp) 1184fed39564STomáš Golembiovský { 1185fed39564STomáš Golembiovský g_autofree char *syspath = realpath(devpath, NULL); 1186fed39564STomáš Golembiovský 1187fed39564STomáš Golembiovský if (!syspath) { 1188fed39564STomáš Golembiovský error_setg_errno(errp, errno, "realpath(\"%s\")", devpath); 1189fed39564STomáš Golembiovský return false; 1190fed39564STomáš Golembiovský } 1191fed39564STomáš Golembiovský return strstr(syspath, "/devices/virtual/block/") != NULL; 1192fed39564STomáš Golembiovský } 1193fed39564STomáš Golembiovský 119446d4c572STomoki Sekiyama /* Dispatch to functions for virtual/real device */ 119546d4c572STomoki Sekiyama static void build_guest_fsinfo_for_device(char const *devpath, 119646d4c572STomoki Sekiyama GuestFilesystemInfo *fs, 119746d4c572STomoki Sekiyama Error **errp) 119846d4c572STomoki Sekiyama { 1199fed39564STomáš Golembiovský ERRP_GUARD(); 1200fed39564STomáš Golembiovský g_autofree char *syspath = NULL; 1201fed39564STomáš Golembiovský bool is_virtual = false; 120246d4c572STomoki Sekiyama 1203fed39564STomáš Golembiovský syspath = realpath(devpath, NULL); 120446d4c572STomoki Sekiyama if (!syspath) { 120546d4c572STomoki Sekiyama error_setg_errno(errp, errno, "realpath(\"%s\")", devpath); 120646d4c572STomoki Sekiyama return; 120746d4c572STomoki Sekiyama } 120846d4c572STomoki Sekiyama 120946d4c572STomoki Sekiyama if (!fs->name) { 12103e015d81SJulia Suvorova fs->name = g_path_get_basename(syspath); 121146d4c572STomoki Sekiyama } 121246d4c572STomoki Sekiyama 121346d4c572STomoki Sekiyama g_debug(" parse sysfs path '%s'", syspath); 1214fed39564STomáš Golembiovský is_virtual = is_disk_virtual(syspath, errp); 1215fed39564STomáš Golembiovský if (*errp != NULL) { 1216fed39564STomáš Golembiovský return; 1217fed39564STomáš Golembiovský } 1218fed39564STomáš Golembiovský if (is_virtual) { 121946d4c572STomoki Sekiyama build_guest_fsinfo_for_virtual_device(syspath, fs, errp); 122046d4c572STomoki Sekiyama } else { 122146d4c572STomoki Sekiyama build_guest_fsinfo_for_real_device(syspath, fs, errp); 122246d4c572STomoki Sekiyama } 122346d4c572STomoki Sekiyama } 122446d4c572STomoki Sekiyama 1225fed39564STomáš Golembiovský #ifdef CONFIG_LIBUDEV 1226fed39564STomáš Golembiovský 1227fed39564STomáš Golembiovský /* 1228fed39564STomáš Golembiovský * Wrapper around build_guest_fsinfo_for_device() for getting just 1229fed39564STomáš Golembiovský * the disk address. 1230fed39564STomáš Golembiovský */ 1231fed39564STomáš Golembiovský static GuestDiskAddress *get_disk_address(const char *syspath, Error **errp) 1232fed39564STomáš Golembiovský { 1233fed39564STomáš Golembiovský g_autoptr(GuestFilesystemInfo) fs = NULL; 1234fed39564STomáš Golembiovský 1235fed39564STomáš Golembiovský fs = g_new0(GuestFilesystemInfo, 1); 1236fed39564STomáš Golembiovský build_guest_fsinfo_for_device(syspath, fs, errp); 1237fed39564STomáš Golembiovský if (fs->disk != NULL) { 1238fed39564STomáš Golembiovský return g_steal_pointer(&fs->disk->value); 1239fed39564STomáš Golembiovský } 1240fed39564STomáš Golembiovský return NULL; 1241fed39564STomáš Golembiovský } 1242fed39564STomáš Golembiovský 1243fed39564STomáš Golembiovský static char *get_alias_for_syspath(const char *syspath) 1244fed39564STomáš Golembiovský { 1245fed39564STomáš Golembiovský struct udev *udev = NULL; 1246fed39564STomáš Golembiovský struct udev_device *udevice = NULL; 1247fed39564STomáš Golembiovský char *ret = NULL; 1248fed39564STomáš Golembiovský 1249fed39564STomáš Golembiovský udev = udev_new(); 1250fed39564STomáš Golembiovský if (udev == NULL) { 1251fed39564STomáš Golembiovský g_debug("failed to query udev"); 1252fed39564STomáš Golembiovský goto out; 1253fed39564STomáš Golembiovský } 1254fed39564STomáš Golembiovský udevice = udev_device_new_from_syspath(udev, syspath); 1255fed39564STomáš Golembiovský if (udevice == NULL) { 1256fed39564STomáš Golembiovský g_debug("failed to query udev for path: %s", syspath); 1257fed39564STomáš Golembiovský goto out; 1258fed39564STomáš Golembiovský } else { 1259fed39564STomáš Golembiovský const char *alias = udev_device_get_property_value( 1260fed39564STomáš Golembiovský udevice, "DM_NAME"); 1261fed39564STomáš Golembiovský /* 1262fed39564STomáš Golembiovský * NULL means there was an error and empty string means there is no 1263fed39564STomáš Golembiovský * alias. In case of no alias we return NULL instead of empty string. 1264fed39564STomáš Golembiovský */ 1265fed39564STomáš Golembiovský if (alias == NULL) { 1266fed39564STomáš Golembiovský g_debug("failed to query udev for device alias for: %s", 1267fed39564STomáš Golembiovský syspath); 1268fed39564STomáš Golembiovský } else if (*alias != 0) { 1269fed39564STomáš Golembiovský ret = g_strdup(alias); 1270fed39564STomáš Golembiovský } 1271fed39564STomáš Golembiovský } 1272fed39564STomáš Golembiovský 1273fed39564STomáš Golembiovský out: 1274fed39564STomáš Golembiovský udev_unref(udev); 1275fed39564STomáš Golembiovský udev_device_unref(udevice); 1276fed39564STomáš Golembiovský return ret; 1277fed39564STomáš Golembiovský } 1278fed39564STomáš Golembiovský 1279fed39564STomáš Golembiovský static char *get_device_for_syspath(const char *syspath) 1280fed39564STomáš Golembiovský { 1281fed39564STomáš Golembiovský struct udev *udev = NULL; 1282fed39564STomáš Golembiovský struct udev_device *udevice = NULL; 1283fed39564STomáš Golembiovský char *ret = NULL; 1284fed39564STomáš Golembiovský 1285fed39564STomáš Golembiovský udev = udev_new(); 1286fed39564STomáš Golembiovský if (udev == NULL) { 1287fed39564STomáš Golembiovský g_debug("failed to query udev"); 1288fed39564STomáš Golembiovský goto out; 1289fed39564STomáš Golembiovský } 1290fed39564STomáš Golembiovský udevice = udev_device_new_from_syspath(udev, syspath); 1291fed39564STomáš Golembiovský if (udevice == NULL) { 1292fed39564STomáš Golembiovský g_debug("failed to query udev for path: %s", syspath); 1293fed39564STomáš Golembiovský goto out; 1294fed39564STomáš Golembiovský } else { 1295fed39564STomáš Golembiovský ret = g_strdup(udev_device_get_devnode(udevice)); 1296fed39564STomáš Golembiovský } 1297fed39564STomáš Golembiovský 1298fed39564STomáš Golembiovský out: 1299fed39564STomáš Golembiovský udev_unref(udev); 1300fed39564STomáš Golembiovský udev_device_unref(udevice); 1301fed39564STomáš Golembiovský return ret; 1302fed39564STomáš Golembiovský } 1303fed39564STomáš Golembiovský 1304fed39564STomáš Golembiovský static void get_disk_deps(const char *disk_dir, GuestDiskInfo *disk) 1305fed39564STomáš Golembiovský { 1306fed39564STomáš Golembiovský g_autofree char *deps_dir = NULL; 1307fed39564STomáš Golembiovský const gchar *dep; 1308fed39564STomáš Golembiovský GDir *dp_deps = NULL; 1309fed39564STomáš Golembiovský 1310fed39564STomáš Golembiovský /* List dependent disks */ 1311fed39564STomáš Golembiovský deps_dir = g_strdup_printf("%s/slaves", disk_dir); 1312fed39564STomáš Golembiovský g_debug(" listing entries in: %s", deps_dir); 1313fed39564STomáš Golembiovský dp_deps = g_dir_open(deps_dir, 0, NULL); 1314fed39564STomáš Golembiovský if (dp_deps == NULL) { 1315fed39564STomáš Golembiovský g_debug("failed to list entries in %s", deps_dir); 1316fed39564STomáš Golembiovský return; 1317fed39564STomáš Golembiovský } 1318a8aa94b5SMichael Roth disk->has_dependencies = true; 1319fed39564STomáš Golembiovský while ((dep = g_dir_read_name(dp_deps)) != NULL) { 1320fed39564STomáš Golembiovský g_autofree char *dep_dir = NULL; 1321fed39564STomáš Golembiovský char *dev_name; 1322fed39564STomáš Golembiovský 1323fed39564STomáš Golembiovský /* Add dependent disks */ 1324fed39564STomáš Golembiovský dep_dir = g_strdup_printf("%s/%s", deps_dir, dep); 1325fed39564STomáš Golembiovský dev_name = get_device_for_syspath(dep_dir); 1326fed39564STomáš Golembiovský if (dev_name != NULL) { 1327fed39564STomáš Golembiovský g_debug(" adding dependent device: %s", dev_name); 132854aa3de7SEric Blake QAPI_LIST_PREPEND(disk->dependencies, dev_name); 1329fed39564STomáš Golembiovský } 1330fed39564STomáš Golembiovský } 1331fed39564STomáš Golembiovský g_dir_close(dp_deps); 1332fed39564STomáš Golembiovský } 1333fed39564STomáš Golembiovský 1334fed39564STomáš Golembiovský /* 1335fed39564STomáš Golembiovský * Detect partitions subdirectory, name is "<disk_name><number>" or 1336fed39564STomáš Golembiovský * "<disk_name>p<number>" 1337fed39564STomáš Golembiovský * 1338fed39564STomáš Golembiovský * @disk_name -- last component of /sys path (e.g. sda) 1339fed39564STomáš Golembiovský * @disk_dir -- sys path of the disk (e.g. /sys/block/sda) 1340fed39564STomáš Golembiovský * @disk_dev -- device node of the disk (e.g. /dev/sda) 1341fed39564STomáš Golembiovský */ 1342fed39564STomáš Golembiovský static GuestDiskInfoList *get_disk_partitions( 1343fed39564STomáš Golembiovský GuestDiskInfoList *list, 1344fed39564STomáš Golembiovský const char *disk_name, const char *disk_dir, 1345fed39564STomáš Golembiovský const char *disk_dev) 1346fed39564STomáš Golembiovský { 134754aa3de7SEric Blake GuestDiskInfoList *ret = list; 1348fed39564STomáš Golembiovský struct dirent *de_disk; 1349fed39564STomáš Golembiovský DIR *dp_disk = NULL; 1350fed39564STomáš Golembiovský size_t len = strlen(disk_name); 1351fed39564STomáš Golembiovský 1352fed39564STomáš Golembiovský dp_disk = opendir(disk_dir); 1353fed39564STomáš Golembiovský while ((de_disk = readdir(dp_disk)) != NULL) { 1354fed39564STomáš Golembiovský g_autofree char *partition_dir = NULL; 1355fed39564STomáš Golembiovský char *dev_name; 1356fed39564STomáš Golembiovský GuestDiskInfo *partition; 1357fed39564STomáš Golembiovský 1358fed39564STomáš Golembiovský if (!(de_disk->d_type & DT_DIR)) { 1359fed39564STomáš Golembiovský continue; 1360fed39564STomáš Golembiovský } 1361fed39564STomáš Golembiovský 1362fed39564STomáš Golembiovský if (!(strncmp(disk_name, de_disk->d_name, len) == 0 && 1363fed39564STomáš Golembiovský ((*(de_disk->d_name + len) == 'p' && 1364fed39564STomáš Golembiovský isdigit(*(de_disk->d_name + len + 1))) || 1365fed39564STomáš Golembiovský isdigit(*(de_disk->d_name + len))))) { 1366fed39564STomáš Golembiovský continue; 1367fed39564STomáš Golembiovský } 1368fed39564STomáš Golembiovský 1369fed39564STomáš Golembiovský partition_dir = g_strdup_printf("%s/%s", 1370fed39564STomáš Golembiovský disk_dir, de_disk->d_name); 1371fed39564STomáš Golembiovský dev_name = get_device_for_syspath(partition_dir); 1372fed39564STomáš Golembiovský if (dev_name == NULL) { 1373fed39564STomáš Golembiovský g_debug("Failed to get device name for syspath: %s", 1374fed39564STomáš Golembiovský disk_dir); 1375fed39564STomáš Golembiovský continue; 1376fed39564STomáš Golembiovský } 1377fed39564STomáš Golembiovský partition = g_new0(GuestDiskInfo, 1); 1378fed39564STomáš Golembiovský partition->name = dev_name; 1379fed39564STomáš Golembiovský partition->partition = true; 1380bac9b87bSMarc-André Lureau partition->has_dependencies = true; 1381fed39564STomáš Golembiovský /* Add parent disk as dependent for easier tracking of hierarchy */ 138254aa3de7SEric Blake QAPI_LIST_PREPEND(partition->dependencies, g_strdup(disk_dev)); 1383fed39564STomáš Golembiovský 138454aa3de7SEric Blake QAPI_LIST_PREPEND(ret, partition); 1385fed39564STomáš Golembiovský } 1386fed39564STomáš Golembiovský closedir(dp_disk); 1387fed39564STomáš Golembiovský 1388fed39564STomáš Golembiovský return ret; 1389fed39564STomáš Golembiovský } 1390fed39564STomáš Golembiovský 1391fed39564STomáš Golembiovský GuestDiskInfoList *qmp_guest_get_disks(Error **errp) 1392fed39564STomáš Golembiovský { 139354aa3de7SEric Blake GuestDiskInfoList *ret = NULL; 1394fed39564STomáš Golembiovský GuestDiskInfo *disk; 1395fed39564STomáš Golembiovský DIR *dp = NULL; 1396fed39564STomáš Golembiovský struct dirent *de = NULL; 1397fed39564STomáš Golembiovský 1398fed39564STomáš Golembiovský g_debug("listing /sys/block directory"); 1399fed39564STomáš Golembiovský dp = opendir("/sys/block"); 1400fed39564STomáš Golembiovský if (dp == NULL) { 1401fed39564STomáš Golembiovský error_setg_errno(errp, errno, "Can't open directory \"/sys/block\""); 1402fed39564STomáš Golembiovský return NULL; 1403fed39564STomáš Golembiovský } 1404fed39564STomáš Golembiovský while ((de = readdir(dp)) != NULL) { 1405fed39564STomáš Golembiovský g_autofree char *disk_dir = NULL, *line = NULL, 1406fed39564STomáš Golembiovský *size_path = NULL; 1407fed39564STomáš Golembiovský char *dev_name; 1408fed39564STomáš Golembiovský Error *local_err = NULL; 1409fed39564STomáš Golembiovský if (de->d_type != DT_LNK) { 1410fed39564STomáš Golembiovský g_debug(" skipping entry: %s", de->d_name); 1411fed39564STomáš Golembiovský continue; 1412fed39564STomáš Golembiovský } 1413fed39564STomáš Golembiovský 1414fed39564STomáš Golembiovský /* Check size and skip zero-sized disks */ 1415fed39564STomáš Golembiovský g_debug(" checking disk size"); 1416fed39564STomáš Golembiovský size_path = g_strdup_printf("/sys/block/%s/size", de->d_name); 1417fed39564STomáš Golembiovský if (!g_file_get_contents(size_path, &line, NULL, NULL)) { 1418fed39564STomáš Golembiovský g_debug(" failed to read disk size"); 1419fed39564STomáš Golembiovský continue; 1420fed39564STomáš Golembiovský } 1421fed39564STomáš Golembiovský if (g_strcmp0(line, "0\n") == 0) { 1422fed39564STomáš Golembiovský g_debug(" skipping zero-sized disk"); 1423fed39564STomáš Golembiovský continue; 1424fed39564STomáš Golembiovský } 1425fed39564STomáš Golembiovský 1426fed39564STomáš Golembiovský g_debug(" adding %s", de->d_name); 1427fed39564STomáš Golembiovský disk_dir = g_strdup_printf("/sys/block/%s", de->d_name); 1428fed39564STomáš Golembiovský dev_name = get_device_for_syspath(disk_dir); 1429fed39564STomáš Golembiovský if (dev_name == NULL) { 1430fed39564STomáš Golembiovský g_debug("Failed to get device name for syspath: %s", 1431fed39564STomáš Golembiovský disk_dir); 1432fed39564STomáš Golembiovský continue; 1433fed39564STomáš Golembiovský } 1434fed39564STomáš Golembiovský disk = g_new0(GuestDiskInfo, 1); 1435fed39564STomáš Golembiovský disk->name = dev_name; 1436fed39564STomáš Golembiovský disk->partition = false; 1437fed39564STomáš Golembiovský disk->alias = get_alias_for_syspath(disk_dir); 1438fed39564STomáš Golembiovský disk->has_alias = (disk->alias != NULL); 143954aa3de7SEric Blake QAPI_LIST_PREPEND(ret, disk); 1440fed39564STomáš Golembiovský 1441fed39564STomáš Golembiovský /* Get address for non-virtual devices */ 1442fed39564STomáš Golembiovský bool is_virtual = is_disk_virtual(disk_dir, &local_err); 1443fed39564STomáš Golembiovský if (local_err != NULL) { 1444fed39564STomáš Golembiovský g_debug(" failed to check disk path, ignoring error: %s", 1445fed39564STomáš Golembiovský error_get_pretty(local_err)); 1446fed39564STomáš Golembiovský error_free(local_err); 1447fed39564STomáš Golembiovský local_err = NULL; 1448fed39564STomáš Golembiovský /* Don't try to get the address */ 1449fed39564STomáš Golembiovský is_virtual = true; 1450fed39564STomáš Golembiovský } 1451fed39564STomáš Golembiovský if (!is_virtual) { 1452fed39564STomáš Golembiovský disk->address = get_disk_address(disk_dir, &local_err); 1453fed39564STomáš Golembiovský if (local_err != NULL) { 1454fed39564STomáš Golembiovský g_debug(" failed to get device info, ignoring error: %s", 1455fed39564STomáš Golembiovský error_get_pretty(local_err)); 1456fed39564STomáš Golembiovský error_free(local_err); 1457fed39564STomáš Golembiovský local_err = NULL; 1458fed39564STomáš Golembiovský } else if (disk->address != NULL) { 1459fed39564STomáš Golembiovský disk->has_address = true; 1460fed39564STomáš Golembiovský } 1461fed39564STomáš Golembiovský } 1462fed39564STomáš Golembiovský 1463fed39564STomáš Golembiovský get_disk_deps(disk_dir, disk); 1464fed39564STomáš Golembiovský ret = get_disk_partitions(ret, de->d_name, disk_dir, dev_name); 1465fed39564STomáš Golembiovský } 1466b1b9ab1cSMichael Roth 1467b1b9ab1cSMichael Roth closedir(dp); 1468b1b9ab1cSMichael Roth 1469fed39564STomáš Golembiovský return ret; 1470fed39564STomáš Golembiovský } 1471fed39564STomáš Golembiovský 1472fed39564STomáš Golembiovský #else 1473fed39564STomáš Golembiovský 1474fed39564STomáš Golembiovský GuestDiskInfoList *qmp_guest_get_disks(Error **errp) 1475fed39564STomáš Golembiovský { 1476fed39564STomáš Golembiovský error_setg(errp, QERR_UNSUPPORTED); 1477fed39564STomáš Golembiovský return NULL; 1478fed39564STomáš Golembiovský } 1479fed39564STomáš Golembiovský 1480fed39564STomáš Golembiovský #endif 1481fed39564STomáš Golembiovský 148246d4c572STomoki Sekiyama /* Return a list of the disk device(s)' info which @mount lies on */ 148346d4c572STomoki Sekiyama static GuestFilesystemInfo *build_guest_fsinfo(struct FsMount *mount, 148446d4c572STomoki Sekiyama Error **errp) 148546d4c572STomoki Sekiyama { 148646d4c572STomoki Sekiyama GuestFilesystemInfo *fs = g_malloc0(sizeof(*fs)); 148725b5ff1aSChen Hanxiao struct statvfs buf; 148825b5ff1aSChen Hanxiao unsigned long used, nonroot_total, fr_size; 148946d4c572STomoki Sekiyama char *devpath = g_strdup_printf("/sys/dev/block/%u:%u", 149046d4c572STomoki Sekiyama mount->devmajor, mount->devminor); 149146d4c572STomoki Sekiyama 149246d4c572STomoki Sekiyama fs->mountpoint = g_strdup(mount->dirname); 149346d4c572STomoki Sekiyama fs->type = g_strdup(mount->devtype); 149446d4c572STomoki Sekiyama build_guest_fsinfo_for_device(devpath, fs, errp); 149546d4c572STomoki Sekiyama 149625b5ff1aSChen Hanxiao if (statvfs(fs->mountpoint, &buf) == 0) { 149725b5ff1aSChen Hanxiao fr_size = buf.f_frsize; 149825b5ff1aSChen Hanxiao used = buf.f_blocks - buf.f_bfree; 149925b5ff1aSChen Hanxiao nonroot_total = used + buf.f_bavail; 150025b5ff1aSChen Hanxiao fs->used_bytes = used * fr_size; 150125b5ff1aSChen Hanxiao fs->total_bytes = nonroot_total * fr_size; 150225b5ff1aSChen Hanxiao 150325b5ff1aSChen Hanxiao fs->has_total_bytes = true; 150425b5ff1aSChen Hanxiao fs->has_used_bytes = true; 150525b5ff1aSChen Hanxiao } 150625b5ff1aSChen Hanxiao 150746d4c572STomoki Sekiyama g_free(devpath); 150825b5ff1aSChen Hanxiao 150946d4c572STomoki Sekiyama return fs; 151046d4c572STomoki Sekiyama } 151146d4c572STomoki Sekiyama 151246d4c572STomoki Sekiyama GuestFilesystemInfoList *qmp_guest_get_fsinfo(Error **errp) 151346d4c572STomoki Sekiyama { 151446d4c572STomoki Sekiyama FsMountList mounts; 151546d4c572STomoki Sekiyama struct FsMount *mount; 151654aa3de7SEric Blake GuestFilesystemInfoList *ret = NULL; 151746d4c572STomoki Sekiyama Error *local_err = NULL; 151846d4c572STomoki Sekiyama 151946d4c572STomoki Sekiyama QTAILQ_INIT(&mounts); 152046d4c572STomoki Sekiyama build_fs_mount_list(&mounts, &local_err); 152146d4c572STomoki Sekiyama if (local_err) { 152246d4c572STomoki Sekiyama error_propagate(errp, local_err); 152346d4c572STomoki Sekiyama return NULL; 152446d4c572STomoki Sekiyama } 152546d4c572STomoki Sekiyama 152646d4c572STomoki Sekiyama QTAILQ_FOREACH(mount, &mounts, next) { 152746d4c572STomoki Sekiyama g_debug("Building guest fsinfo for '%s'", mount->dirname); 152846d4c572STomoki Sekiyama 152954aa3de7SEric Blake QAPI_LIST_PREPEND(ret, build_guest_fsinfo(mount, &local_err)); 153046d4c572STomoki Sekiyama if (local_err) { 153146d4c572STomoki Sekiyama error_propagate(errp, local_err); 153246d4c572STomoki Sekiyama qapi_free_GuestFilesystemInfoList(ret); 153346d4c572STomoki Sekiyama ret = NULL; 153446d4c572STomoki Sekiyama break; 153546d4c572STomoki Sekiyama } 153646d4c572STomoki Sekiyama } 153746d4c572STomoki Sekiyama 153846d4c572STomoki Sekiyama free_fs_mount_list(&mounts); 153946d4c572STomoki Sekiyama return ret; 154046d4c572STomoki Sekiyama } 154146d4c572STomoki Sekiyama 154246d4c572STomoki Sekiyama 1543ec0f694cSTomoki Sekiyama typedef enum { 1544ec0f694cSTomoki Sekiyama FSFREEZE_HOOK_THAW = 0, 1545ec0f694cSTomoki Sekiyama FSFREEZE_HOOK_FREEZE, 1546ec0f694cSTomoki Sekiyama } FsfreezeHookArg; 1547ec0f694cSTomoki Sekiyama 154813a439ecSStefan Weil static const char *fsfreeze_hook_arg_string[] = { 1549ec0f694cSTomoki Sekiyama "thaw", 1550ec0f694cSTomoki Sekiyama "freeze", 1551ec0f694cSTomoki Sekiyama }; 1552ec0f694cSTomoki Sekiyama 155377dbc81bSMarkus Armbruster static void execute_fsfreeze_hook(FsfreezeHookArg arg, Error **errp) 1554ec0f694cSTomoki Sekiyama { 1555ec0f694cSTomoki Sekiyama int status; 1556ec0f694cSTomoki Sekiyama pid_t pid; 1557ec0f694cSTomoki Sekiyama const char *hook; 1558ec0f694cSTomoki Sekiyama const char *arg_str = fsfreeze_hook_arg_string[arg]; 1559ec0f694cSTomoki Sekiyama Error *local_err = NULL; 1560ec0f694cSTomoki Sekiyama 1561ec0f694cSTomoki Sekiyama hook = ga_fsfreeze_hook(ga_state); 1562ec0f694cSTomoki Sekiyama if (!hook) { 1563ec0f694cSTomoki Sekiyama return; 1564ec0f694cSTomoki Sekiyama } 1565ec0f694cSTomoki Sekiyama if (access(hook, X_OK) != 0) { 156677dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "can't access fsfreeze hook '%s'", hook); 1567ec0f694cSTomoki Sekiyama return; 1568ec0f694cSTomoki Sekiyama } 1569ec0f694cSTomoki Sekiyama 1570ec0f694cSTomoki Sekiyama slog("executing fsfreeze hook with arg '%s'", arg_str); 1571ec0f694cSTomoki Sekiyama pid = fork(); 1572ec0f694cSTomoki Sekiyama if (pid == 0) { 1573ec0f694cSTomoki Sekiyama setsid(); 1574ec0f694cSTomoki Sekiyama reopen_fd_to_null(0); 1575ec0f694cSTomoki Sekiyama reopen_fd_to_null(1); 1576ec0f694cSTomoki Sekiyama reopen_fd_to_null(2); 1577ec0f694cSTomoki Sekiyama 1578fcc41961SMarc-André Lureau execl(hook, hook, arg_str, NULL); 1579ec0f694cSTomoki Sekiyama _exit(EXIT_FAILURE); 1580ec0f694cSTomoki Sekiyama } else if (pid < 0) { 158177dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to create child process"); 1582ec0f694cSTomoki Sekiyama return; 1583ec0f694cSTomoki Sekiyama } 1584ec0f694cSTomoki Sekiyama 1585ec0f694cSTomoki Sekiyama ga_wait_child(pid, &status, &local_err); 158684d18f06SMarkus Armbruster if (local_err) { 158777dbc81bSMarkus Armbruster error_propagate(errp, local_err); 1588ec0f694cSTomoki Sekiyama return; 1589ec0f694cSTomoki Sekiyama } 1590ec0f694cSTomoki Sekiyama 1591ec0f694cSTomoki Sekiyama if (!WIFEXITED(status)) { 159277dbc81bSMarkus Armbruster error_setg(errp, "fsfreeze hook has terminated abnormally"); 1593ec0f694cSTomoki Sekiyama return; 1594ec0f694cSTomoki Sekiyama } 1595ec0f694cSTomoki Sekiyama 1596ec0f694cSTomoki Sekiyama status = WEXITSTATUS(status); 1597ec0f694cSTomoki Sekiyama if (status) { 159877dbc81bSMarkus Armbruster error_setg(errp, "fsfreeze hook has failed with status %d", status); 1599ec0f694cSTomoki Sekiyama return; 1600ec0f694cSTomoki Sekiyama } 1601ec0f694cSTomoki Sekiyama } 1602ec0f694cSTomoki Sekiyama 1603c216e5adSMichael Roth /* 1604c216e5adSMichael Roth * Return status of freeze/thaw 1605c216e5adSMichael Roth */ 160677dbc81bSMarkus Armbruster GuestFsfreezeStatus qmp_guest_fsfreeze_status(Error **errp) 1607c216e5adSMichael Roth { 1608f22d85e9SMichael Roth if (ga_is_frozen(ga_state)) { 1609f22d85e9SMichael Roth return GUEST_FSFREEZE_STATUS_FROZEN; 1610f22d85e9SMichael Roth } 1611f22d85e9SMichael Roth 1612f22d85e9SMichael Roth return GUEST_FSFREEZE_STATUS_THAWED; 1613c216e5adSMichael Roth } 1614c216e5adSMichael Roth 1615e99bce20STomoki Sekiyama int64_t qmp_guest_fsfreeze_freeze(Error **errp) 1616e99bce20STomoki Sekiyama { 1617e99bce20STomoki Sekiyama return qmp_guest_fsfreeze_freeze_list(false, NULL, errp); 1618e99bce20STomoki Sekiyama } 1619e99bce20STomoki Sekiyama 1620c216e5adSMichael Roth /* 1621c216e5adSMichael Roth * Walk list of mounted file systems in the guest, and freeze the ones which 1622c216e5adSMichael Roth * are real local file systems. 1623c216e5adSMichael Roth */ 1624e99bce20STomoki Sekiyama int64_t qmp_guest_fsfreeze_freeze_list(bool has_mountpoints, 1625e99bce20STomoki Sekiyama strList *mountpoints, 1626e99bce20STomoki Sekiyama Error **errp) 1627c216e5adSMichael Roth { 1628c216e5adSMichael Roth int ret = 0, i = 0; 1629e99bce20STomoki Sekiyama strList *list; 1630af02203fSPaolo Bonzini FsMountList mounts; 1631af02203fSPaolo Bonzini struct FsMount *mount; 1632261551d1SLuiz Capitulino Error *local_err = NULL; 1633c216e5adSMichael Roth int fd; 1634c216e5adSMichael Roth 1635c216e5adSMichael Roth slog("guest-fsfreeze called"); 1636c216e5adSMichael Roth 1637ec0f694cSTomoki Sekiyama execute_fsfreeze_hook(FSFREEZE_HOOK_FREEZE, &local_err); 163884d18f06SMarkus Armbruster if (local_err) { 163977dbc81bSMarkus Armbruster error_propagate(errp, local_err); 1640ec0f694cSTomoki Sekiyama return -1; 1641ec0f694cSTomoki Sekiyama } 1642ec0f694cSTomoki Sekiyama 16439e8aded4SMichael Roth QTAILQ_INIT(&mounts); 1644261551d1SLuiz Capitulino build_fs_mount_list(&mounts, &local_err); 164584d18f06SMarkus Armbruster if (local_err) { 164677dbc81bSMarkus Armbruster error_propagate(errp, local_err); 1647261551d1SLuiz Capitulino return -1; 1648c216e5adSMichael Roth } 1649c216e5adSMichael Roth 1650c216e5adSMichael Roth /* cannot risk guest agent blocking itself on a write in this state */ 1651f22d85e9SMichael Roth ga_set_frozen(ga_state); 1652c216e5adSMichael Roth 1653eae3eb3eSPaolo Bonzini QTAILQ_FOREACH_REVERSE(mount, &mounts, next) { 1654e99bce20STomoki Sekiyama /* To issue fsfreeze in the reverse order of mounts, check if the 1655e99bce20STomoki Sekiyama * mount is listed in the list here */ 1656e99bce20STomoki Sekiyama if (has_mountpoints) { 1657e99bce20STomoki Sekiyama for (list = mountpoints; list; list = list->next) { 1658e99bce20STomoki Sekiyama if (strcmp(list->value, mount->dirname) == 0) { 1659e99bce20STomoki Sekiyama break; 1660e99bce20STomoki Sekiyama } 1661e99bce20STomoki Sekiyama } 1662e99bce20STomoki Sekiyama if (!list) { 1663e99bce20STomoki Sekiyama continue; 1664e99bce20STomoki Sekiyama } 1665e99bce20STomoki Sekiyama } 1666e99bce20STomoki Sekiyama 1667448058aaSDaniel P. Berrangé fd = qemu_open_old(mount->dirname, O_RDONLY); 1668c216e5adSMichael Roth if (fd == -1) { 166977dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to open %s", mount->dirname); 1670c216e5adSMichael Roth goto error; 1671c216e5adSMichael Roth } 1672c216e5adSMichael Roth 1673e35916acSMichael Tokarev /* we try to cull filesystems we know won't work in advance, but other 1674e35916acSMichael Tokarev * filesystems may not implement fsfreeze for less obvious reasons. 16759e8aded4SMichael Roth * these will report EOPNOTSUPP. we simply ignore these when tallying 16769e8aded4SMichael Roth * the number of frozen filesystems. 1677ce2eb6c4SPeter Lieven * if a filesystem is mounted more than once (aka bind mount) a 1678ce2eb6c4SPeter Lieven * consecutive attempt to freeze an already frozen filesystem will 1679ce2eb6c4SPeter Lieven * return EBUSY. 16809e8aded4SMichael Roth * 16819e8aded4SMichael Roth * any other error means a failure to freeze a filesystem we 16829e8aded4SMichael Roth * expect to be freezable, so return an error in those cases 16839e8aded4SMichael Roth * and return system to thawed state. 1684c216e5adSMichael Roth */ 1685c216e5adSMichael Roth ret = ioctl(fd, FIFREEZE); 16869e8aded4SMichael Roth if (ret == -1) { 1687ce2eb6c4SPeter Lieven if (errno != EOPNOTSUPP && errno != EBUSY) { 168877dbc81bSMarkus Armbruster error_setg_errno(errp, errno, "failed to freeze %s", 1689617fbbc1SLuiz Capitulino mount->dirname); 1690c216e5adSMichael Roth close(fd); 1691c216e5adSMichael Roth goto error; 1692c216e5adSMichael Roth } 16939e8aded4SMichael Roth } else { 1694c216e5adSMichael Roth i++; 1695c216e5adSMichael Roth } 16969e8aded4SMichael Roth close(fd); 16979e8aded4SMichael Roth } 1698c216e5adSMichael Roth 1699af02203fSPaolo Bonzini free_fs_mount_list(&mounts); 170065650f01SChen Hanxiao /* We may not issue any FIFREEZE here. 170165650f01SChen Hanxiao * Just unset ga_state here and ready for the next call. 170265650f01SChen Hanxiao */ 170365650f01SChen Hanxiao if (i == 0) { 170465650f01SChen Hanxiao ga_unset_frozen(ga_state); 170565650f01SChen Hanxiao } 1706c216e5adSMichael Roth return i; 1707c216e5adSMichael Roth 1708c216e5adSMichael Roth error: 1709af02203fSPaolo Bonzini free_fs_mount_list(&mounts); 1710c216e5adSMichael Roth qmp_guest_fsfreeze_thaw(NULL); 1711c216e5adSMichael Roth return 0; 1712c216e5adSMichael Roth } 1713c216e5adSMichael Roth 1714c216e5adSMichael Roth /* 1715c216e5adSMichael Roth * Walk list of frozen file systems in the guest, and thaw them. 1716c216e5adSMichael Roth */ 171777dbc81bSMarkus Armbruster int64_t qmp_guest_fsfreeze_thaw(Error **errp) 1718c216e5adSMichael Roth { 1719c216e5adSMichael Roth int ret; 1720af02203fSPaolo Bonzini FsMountList mounts; 1721af02203fSPaolo Bonzini FsMount *mount; 17229e8aded4SMichael Roth int fd, i = 0, logged; 1723261551d1SLuiz Capitulino Error *local_err = NULL; 1724c216e5adSMichael Roth 17259e8aded4SMichael Roth QTAILQ_INIT(&mounts); 1726261551d1SLuiz Capitulino build_fs_mount_list(&mounts, &local_err); 172784d18f06SMarkus Armbruster if (local_err) { 172877dbc81bSMarkus Armbruster error_propagate(errp, local_err); 17299e8aded4SMichael Roth return 0; 17309e8aded4SMichael Roth } 17319e8aded4SMichael Roth 17329e8aded4SMichael Roth QTAILQ_FOREACH(mount, &mounts, next) { 17339e8aded4SMichael Roth logged = false; 1734448058aaSDaniel P. Berrangé fd = qemu_open_old(mount->dirname, O_RDONLY); 1735c216e5adSMichael Roth if (fd == -1) { 1736c216e5adSMichael Roth continue; 1737c216e5adSMichael Roth } 17389e8aded4SMichael Roth /* we have no way of knowing whether a filesystem was actually unfrozen 17399e8aded4SMichael Roth * as a result of a successful call to FITHAW, only that if an error 17409e8aded4SMichael Roth * was returned the filesystem was *not* unfrozen by that particular 17419e8aded4SMichael Roth * call. 17429e8aded4SMichael Roth * 1743a31f0531SJim Meyering * since multiple preceding FIFREEZEs require multiple calls to FITHAW 17449e8aded4SMichael Roth * to unfreeze, continuing issuing FITHAW until an error is returned, 17459e8aded4SMichael Roth * in which case either the filesystem is in an unfreezable state, or, 17469e8aded4SMichael Roth * more likely, it was thawed previously (and remains so afterward). 17479e8aded4SMichael Roth * 17489e8aded4SMichael Roth * also, since the most recent successful call is the one that did 17499e8aded4SMichael Roth * the actual unfreeze, we can use this to provide an accurate count 17509e8aded4SMichael Roth * of the number of filesystems unfrozen by guest-fsfreeze-thaw, which 17519e8aded4SMichael Roth * may * be useful for determining whether a filesystem was unfrozen 17529e8aded4SMichael Roth * during the freeze/thaw phase by a process other than qemu-ga. 17539e8aded4SMichael Roth */ 17549e8aded4SMichael Roth do { 1755c216e5adSMichael Roth ret = ioctl(fd, FITHAW); 17569e8aded4SMichael Roth if (ret == 0 && !logged) { 1757c216e5adSMichael Roth i++; 17589e8aded4SMichael Roth logged = true; 17599e8aded4SMichael Roth } 17609e8aded4SMichael Roth } while (ret == 0); 17619e8aded4SMichael Roth close(fd); 1762c216e5adSMichael Roth } 1763c216e5adSMichael Roth 1764f22d85e9SMichael Roth ga_unset_frozen(ga_state); 1765af02203fSPaolo Bonzini free_fs_mount_list(&mounts); 1766ec0f694cSTomoki Sekiyama 176777dbc81bSMarkus Armbruster execute_fsfreeze_hook(FSFREEZE_HOOK_THAW, errp); 1768ec0f694cSTomoki Sekiyama 1769c216e5adSMichael Roth return i; 1770c216e5adSMichael Roth } 1771c216e5adSMichael Roth 1772c216e5adSMichael Roth static void guest_fsfreeze_cleanup(void) 1773c216e5adSMichael Roth { 1774c216e5adSMichael Roth Error *err = NULL; 1775c216e5adSMichael Roth 1776f22d85e9SMichael Roth if (ga_is_frozen(ga_state) == GUEST_FSFREEZE_STATUS_FROZEN) { 17776f686749SMarkus Armbruster qmp_guest_fsfreeze_thaw(&err); 17786f686749SMarkus Armbruster if (err) { 17796f686749SMarkus Armbruster slog("failed to clean up frozen filesystems: %s", 17806f686749SMarkus Armbruster error_get_pretty(err)); 17816f686749SMarkus Armbruster error_free(err); 1782c216e5adSMichael Roth } 1783c216e5adSMichael Roth } 1784c216e5adSMichael Roth } 1785e72c3f2eSMichael Roth #endif /* CONFIG_FSFREEZE */ 1786c216e5adSMichael Roth 1787eab5fd59SPaolo Bonzini #if defined(CONFIG_FSTRIM) 1788eab5fd59SPaolo Bonzini /* 1789eab5fd59SPaolo Bonzini * Walk list of mounted file systems in the guest, and trim them. 1790eab5fd59SPaolo Bonzini */ 1791e82855d9SJustin Ossevoort GuestFilesystemTrimResponse * 1792e82855d9SJustin Ossevoort qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **errp) 1793eab5fd59SPaolo Bonzini { 1794e82855d9SJustin Ossevoort GuestFilesystemTrimResponse *response; 1795e82855d9SJustin Ossevoort GuestFilesystemTrimResult *result; 1796eab5fd59SPaolo Bonzini int ret = 0; 1797eab5fd59SPaolo Bonzini FsMountList mounts; 1798eab5fd59SPaolo Bonzini struct FsMount *mount; 1799eab5fd59SPaolo Bonzini int fd; 1800261551d1SLuiz Capitulino Error *local_err = NULL; 180173a652a1SJustin Ossevoort struct fstrim_range r; 1802eab5fd59SPaolo Bonzini 1803eab5fd59SPaolo Bonzini slog("guest-fstrim called"); 1804eab5fd59SPaolo Bonzini 1805eab5fd59SPaolo Bonzini QTAILQ_INIT(&mounts); 1806261551d1SLuiz Capitulino build_fs_mount_list(&mounts, &local_err); 180784d18f06SMarkus Armbruster if (local_err) { 180877dbc81bSMarkus Armbruster error_propagate(errp, local_err); 1809e82855d9SJustin Ossevoort return NULL; 1810eab5fd59SPaolo Bonzini } 1811eab5fd59SPaolo Bonzini 1812e82855d9SJustin Ossevoort response = g_malloc0(sizeof(*response)); 1813e82855d9SJustin Ossevoort 1814eab5fd59SPaolo Bonzini QTAILQ_FOREACH(mount, &mounts, next) { 1815e82855d9SJustin Ossevoort result = g_malloc0(sizeof(*result)); 1816e82855d9SJustin Ossevoort result->path = g_strdup(mount->dirname); 1817e82855d9SJustin Ossevoort 181854aa3de7SEric Blake QAPI_LIST_PREPEND(response->paths, result); 1819e82855d9SJustin Ossevoort 1820448058aaSDaniel P. Berrangé fd = qemu_open_old(mount->dirname, O_RDONLY); 1821eab5fd59SPaolo Bonzini if (fd == -1) { 1822e82855d9SJustin Ossevoort result->error = g_strdup_printf("failed to open: %s", 1823e82855d9SJustin Ossevoort strerror(errno)); 1824e82855d9SJustin Ossevoort result->has_error = true; 1825e82855d9SJustin Ossevoort continue; 1826eab5fd59SPaolo Bonzini } 1827eab5fd59SPaolo Bonzini 1828e35916acSMichael Tokarev /* We try to cull filesystems we know won't work in advance, but other 1829e35916acSMichael Tokarev * filesystems may not implement fstrim for less obvious reasons. 1830e35916acSMichael Tokarev * These will report EOPNOTSUPP; while in some other cases ENOTTY 1831e35916acSMichael Tokarev * will be reported (e.g. CD-ROMs). 1832e82855d9SJustin Ossevoort * Any other error means an unexpected error. 1833eab5fd59SPaolo Bonzini */ 183473a652a1SJustin Ossevoort r.start = 0; 183573a652a1SJustin Ossevoort r.len = -1; 183673a652a1SJustin Ossevoort r.minlen = has_minimum ? minimum : 0; 1837eab5fd59SPaolo Bonzini ret = ioctl(fd, FITRIM, &r); 1838eab5fd59SPaolo Bonzini if (ret == -1) { 1839e82855d9SJustin Ossevoort result->has_error = true; 1840e82855d9SJustin Ossevoort if (errno == ENOTTY || errno == EOPNOTSUPP) { 1841e82855d9SJustin Ossevoort result->error = g_strdup("trim not supported"); 1842e82855d9SJustin Ossevoort } else { 1843e82855d9SJustin Ossevoort result->error = g_strdup_printf("failed to trim: %s", 1844e82855d9SJustin Ossevoort strerror(errno)); 1845e82855d9SJustin Ossevoort } 1846eab5fd59SPaolo Bonzini close(fd); 1847e82855d9SJustin Ossevoort continue; 1848eab5fd59SPaolo Bonzini } 1849e82855d9SJustin Ossevoort 1850e82855d9SJustin Ossevoort result->has_minimum = true; 1851e82855d9SJustin Ossevoort result->minimum = r.minlen; 1852e82855d9SJustin Ossevoort result->has_trimmed = true; 1853e82855d9SJustin Ossevoort result->trimmed = r.len; 1854eab5fd59SPaolo Bonzini close(fd); 1855eab5fd59SPaolo Bonzini } 1856eab5fd59SPaolo Bonzini 1857eab5fd59SPaolo Bonzini free_fs_mount_list(&mounts); 1858e82855d9SJustin Ossevoort return response; 1859eab5fd59SPaolo Bonzini } 1860eab5fd59SPaolo Bonzini #endif /* CONFIG_FSTRIM */ 1861eab5fd59SPaolo Bonzini 1862eab5fd59SPaolo Bonzini 186311d0f125SLuiz Capitulino #define LINUX_SYS_STATE_FILE "/sys/power/state" 186411d0f125SLuiz Capitulino #define SUSPEND_SUPPORTED 0 186511d0f125SLuiz Capitulino #define SUSPEND_NOT_SUPPORTED 1 186611d0f125SLuiz Capitulino 18678b020b5eSDaniel Henrique Barboza typedef enum { 18688b020b5eSDaniel Henrique Barboza SUSPEND_MODE_DISK = 0, 18698b020b5eSDaniel Henrique Barboza SUSPEND_MODE_RAM = 1, 18708b020b5eSDaniel Henrique Barboza SUSPEND_MODE_HYBRID = 2, 18718b020b5eSDaniel Henrique Barboza } SuspendMode; 18728b020b5eSDaniel Henrique Barboza 18738b020b5eSDaniel Henrique Barboza /* 18748b020b5eSDaniel Henrique Barboza * Executes a command in a child process using g_spawn_sync, 18758b020b5eSDaniel Henrique Barboza * returning an int >= 0 representing the exit status of the 18768b020b5eSDaniel Henrique Barboza * process. 18778b020b5eSDaniel Henrique Barboza * 18788b020b5eSDaniel Henrique Barboza * If the program wasn't found in path, returns -1. 18798b020b5eSDaniel Henrique Barboza * 18808b020b5eSDaniel Henrique Barboza * If a problem happened when creating the child process, 18818b020b5eSDaniel Henrique Barboza * returns -1 and errp is set. 18828b020b5eSDaniel Henrique Barboza */ 18838b020b5eSDaniel Henrique Barboza static int run_process_child(const char *command[], Error **errp) 18848b020b5eSDaniel Henrique Barboza { 18858b020b5eSDaniel Henrique Barboza int exit_status, spawn_flag; 18868b020b5eSDaniel Henrique Barboza GError *g_err = NULL; 18878b020b5eSDaniel Henrique Barboza bool success; 18888b020b5eSDaniel Henrique Barboza 18898b020b5eSDaniel Henrique Barboza spawn_flag = G_SPAWN_SEARCH_PATH | G_SPAWN_STDOUT_TO_DEV_NULL | 18908b020b5eSDaniel Henrique Barboza G_SPAWN_STDERR_TO_DEV_NULL; 18918b020b5eSDaniel Henrique Barboza 1892fcc41961SMarc-André Lureau success = g_spawn_sync(NULL, (char **)command, NULL, spawn_flag, 18938b020b5eSDaniel Henrique Barboza NULL, NULL, NULL, NULL, 18948b020b5eSDaniel Henrique Barboza &exit_status, &g_err); 18958b020b5eSDaniel Henrique Barboza 18968b020b5eSDaniel Henrique Barboza if (success) { 18978b020b5eSDaniel Henrique Barboza return WEXITSTATUS(exit_status); 18988b020b5eSDaniel Henrique Barboza } 18998b020b5eSDaniel Henrique Barboza 19008b020b5eSDaniel Henrique Barboza if (g_err && (g_err->code != G_SPAWN_ERROR_NOENT)) { 19018b020b5eSDaniel Henrique Barboza error_setg(errp, "failed to create child process, error '%s'", 19028b020b5eSDaniel Henrique Barboza g_err->message); 19038b020b5eSDaniel Henrique Barboza } 19048b020b5eSDaniel Henrique Barboza 19058b020b5eSDaniel Henrique Barboza g_error_free(g_err); 19068b020b5eSDaniel Henrique Barboza return -1; 19078b020b5eSDaniel Henrique Barboza } 19088b020b5eSDaniel Henrique Barboza 1909067927d6SDaniel Henrique Barboza static bool systemd_supports_mode(SuspendMode mode, Error **errp) 1910067927d6SDaniel Henrique Barboza { 1911067927d6SDaniel Henrique Barboza const char *systemctl_args[3] = {"systemd-hibernate", "systemd-suspend", 1912067927d6SDaniel Henrique Barboza "systemd-hybrid-sleep"}; 1913067927d6SDaniel Henrique Barboza const char *cmd[4] = {"systemctl", "status", systemctl_args[mode], NULL}; 1914067927d6SDaniel Henrique Barboza int status; 1915067927d6SDaniel Henrique Barboza 1916992861fbSMarkus Armbruster status = run_process_child(cmd, errp); 1917067927d6SDaniel Henrique Barboza 1918067927d6SDaniel Henrique Barboza /* 1919067927d6SDaniel Henrique Barboza * systemctl status uses LSB return codes so we can expect 1920067927d6SDaniel Henrique Barboza * status > 0 and be ok. To assert if the guest has support 1921067927d6SDaniel Henrique Barboza * for the selected suspend mode, status should be < 4. 4 is 1922067927d6SDaniel Henrique Barboza * the code for unknown service status, the return value when 1923067927d6SDaniel Henrique Barboza * the service does not exist. A common value is status = 3 1924067927d6SDaniel Henrique Barboza * (program is not running). 1925067927d6SDaniel Henrique Barboza */ 1926067927d6SDaniel Henrique Barboza if (status > 0 && status < 4) { 1927067927d6SDaniel Henrique Barboza return true; 1928067927d6SDaniel Henrique Barboza } 1929067927d6SDaniel Henrique Barboza 1930067927d6SDaniel Henrique Barboza return false; 1931067927d6SDaniel Henrique Barboza } 1932067927d6SDaniel Henrique Barboza 1933067927d6SDaniel Henrique Barboza static void systemd_suspend(SuspendMode mode, Error **errp) 1934067927d6SDaniel Henrique Barboza { 1935067927d6SDaniel Henrique Barboza Error *local_err = NULL; 1936067927d6SDaniel Henrique Barboza const char *systemctl_args[3] = {"hibernate", "suspend", "hybrid-sleep"}; 1937067927d6SDaniel Henrique Barboza const char *cmd[3] = {"systemctl", systemctl_args[mode], NULL}; 1938067927d6SDaniel Henrique Barboza int status; 1939067927d6SDaniel Henrique Barboza 1940067927d6SDaniel Henrique Barboza status = run_process_child(cmd, &local_err); 1941067927d6SDaniel Henrique Barboza 1942067927d6SDaniel Henrique Barboza if (status == 0) { 1943067927d6SDaniel Henrique Barboza return; 1944067927d6SDaniel Henrique Barboza } 1945067927d6SDaniel Henrique Barboza 1946067927d6SDaniel Henrique Barboza if ((status == -1) && !local_err) { 1947067927d6SDaniel Henrique Barboza error_setg(errp, "the helper program 'systemctl %s' was not found", 1948067927d6SDaniel Henrique Barboza systemctl_args[mode]); 1949067927d6SDaniel Henrique Barboza return; 1950067927d6SDaniel Henrique Barboza } 1951067927d6SDaniel Henrique Barboza 1952067927d6SDaniel Henrique Barboza if (local_err) { 1953067927d6SDaniel Henrique Barboza error_propagate(errp, local_err); 1954067927d6SDaniel Henrique Barboza } else { 1955067927d6SDaniel Henrique Barboza error_setg(errp, "the helper program 'systemctl %s' returned an " 1956067927d6SDaniel Henrique Barboza "unexpected exit status code (%d)", 1957067927d6SDaniel Henrique Barboza systemctl_args[mode], status); 1958067927d6SDaniel Henrique Barboza } 1959067927d6SDaniel Henrique Barboza } 1960067927d6SDaniel Henrique Barboza 19618b020b5eSDaniel Henrique Barboza static bool pmutils_supports_mode(SuspendMode mode, Error **errp) 196211d0f125SLuiz Capitulino { 19636b26e837SLuiz Capitulino Error *local_err = NULL; 19648b020b5eSDaniel Henrique Barboza const char *pmutils_args[3] = {"--hibernate", "--suspend", 19658b020b5eSDaniel Henrique Barboza "--suspend-hybrid"}; 19668b020b5eSDaniel Henrique Barboza const char *cmd[3] = {"pm-is-supported", pmutils_args[mode], NULL}; 1967dc8764f0SLuiz Capitulino int status; 196811d0f125SLuiz Capitulino 19698b020b5eSDaniel Henrique Barboza status = run_process_child(cmd, &local_err); 1970304a0fcbSDaniel Henrique Barboza 19718b020b5eSDaniel Henrique Barboza if (status == SUSPEND_SUPPORTED) { 19728b020b5eSDaniel Henrique Barboza return true; 1973304a0fcbSDaniel Henrique Barboza } 1974304a0fcbSDaniel Henrique Barboza 19758b020b5eSDaniel Henrique Barboza if ((status == -1) && !local_err) { 19768b020b5eSDaniel Henrique Barboza return false; 1977a5fcf0e3SDaniel Henrique Barboza } 197811d0f125SLuiz Capitulino 197984d18f06SMarkus Armbruster if (local_err) { 198077dbc81bSMarkus Armbruster error_propagate(errp, local_err); 19818b020b5eSDaniel Henrique Barboza } else { 198277dbc81bSMarkus Armbruster error_setg(errp, 19838b020b5eSDaniel Henrique Barboza "the helper program '%s' returned an unexpected exit" 19848b020b5eSDaniel Henrique Barboza " status code (%d)", "pm-is-supported", status); 1985dc8764f0SLuiz Capitulino } 198611d0f125SLuiz Capitulino 19878b020b5eSDaniel Henrique Barboza return false; 1988a5fcf0e3SDaniel Henrique Barboza } 1989a5fcf0e3SDaniel Henrique Barboza 19908b020b5eSDaniel Henrique Barboza static void pmutils_suspend(SuspendMode mode, Error **errp) 1991246d76ebSDaniel Henrique Barboza { 1992246d76ebSDaniel Henrique Barboza Error *local_err = NULL; 19938b020b5eSDaniel Henrique Barboza const char *pmutils_binaries[3] = {"pm-hibernate", "pm-suspend", 19948b020b5eSDaniel Henrique Barboza "pm-suspend-hybrid"}; 19958b020b5eSDaniel Henrique Barboza const char *cmd[2] = {pmutils_binaries[mode], NULL}; 1996246d76ebSDaniel Henrique Barboza int status; 1997246d76ebSDaniel Henrique Barboza 19988b020b5eSDaniel Henrique Barboza status = run_process_child(cmd, &local_err); 1999246d76ebSDaniel Henrique Barboza 20008b020b5eSDaniel Henrique Barboza if (status == 0) { 2001246d76ebSDaniel Henrique Barboza return; 2002246d76ebSDaniel Henrique Barboza } 2003246d76ebSDaniel Henrique Barboza 20048b020b5eSDaniel Henrique Barboza if ((status == -1) && !local_err) { 20058b020b5eSDaniel Henrique Barboza error_setg(errp, "the helper program '%s' was not found", 20068b020b5eSDaniel Henrique Barboza pmutils_binaries[mode]); 2007246d76ebSDaniel Henrique Barboza return; 2008246d76ebSDaniel Henrique Barboza } 2009246d76ebSDaniel Henrique Barboza 2010246d76ebSDaniel Henrique Barboza if (local_err) { 2011246d76ebSDaniel Henrique Barboza error_propagate(errp, local_err); 20128b020b5eSDaniel Henrique Barboza } else { 2013246d76ebSDaniel Henrique Barboza error_setg(errp, 20148b020b5eSDaniel Henrique Barboza "the helper program '%s' returned an unexpected exit" 20158b020b5eSDaniel Henrique Barboza " status code (%d)", pmutils_binaries[mode], status); 20168b020b5eSDaniel Henrique Barboza } 2017246d76ebSDaniel Henrique Barboza } 2018246d76ebSDaniel Henrique Barboza 20198b020b5eSDaniel Henrique Barboza static bool linux_sys_state_supports_mode(SuspendMode mode, Error **errp) 2020a5fcf0e3SDaniel Henrique Barboza { 20218b020b5eSDaniel Henrique Barboza const char *sysfile_strs[3] = {"disk", "mem", NULL}; 20228b020b5eSDaniel Henrique Barboza const char *sysfile_str = sysfile_strs[mode]; 2023a5fcf0e3SDaniel Henrique Barboza char buf[32]; /* hopefully big enough */ 2024a5fcf0e3SDaniel Henrique Barboza int fd; 2025a5fcf0e3SDaniel Henrique Barboza ssize_t ret; 2026a5fcf0e3SDaniel Henrique Barboza 20278b020b5eSDaniel Henrique Barboza if (!sysfile_str) { 20288b020b5eSDaniel Henrique Barboza error_setg(errp, "unknown guest suspend mode"); 2029a5fcf0e3SDaniel Henrique Barboza return false; 2030a5fcf0e3SDaniel Henrique Barboza } 2031a5fcf0e3SDaniel Henrique Barboza 2032a5fcf0e3SDaniel Henrique Barboza fd = open(LINUX_SYS_STATE_FILE, O_RDONLY); 2033a5fcf0e3SDaniel Henrique Barboza if (fd < 0) { 2034a5fcf0e3SDaniel Henrique Barboza return false; 2035a5fcf0e3SDaniel Henrique Barboza } 2036a5fcf0e3SDaniel Henrique Barboza 2037a5fcf0e3SDaniel Henrique Barboza ret = read(fd, buf, sizeof(buf) - 1); 2038d9c745c1SPaolo Bonzini close(fd); 2039a5fcf0e3SDaniel Henrique Barboza if (ret <= 0) { 2040a5fcf0e3SDaniel Henrique Barboza return false; 2041a5fcf0e3SDaniel Henrique Barboza } 2042a5fcf0e3SDaniel Henrique Barboza buf[ret] = '\0'; 2043a5fcf0e3SDaniel Henrique Barboza 2044a5fcf0e3SDaniel Henrique Barboza if (strstr(buf, sysfile_str)) { 2045a5fcf0e3SDaniel Henrique Barboza return true; 2046a5fcf0e3SDaniel Henrique Barboza } 2047a5fcf0e3SDaniel Henrique Barboza return false; 2048a5fcf0e3SDaniel Henrique Barboza } 2049a5fcf0e3SDaniel Henrique Barboza 20508b020b5eSDaniel Henrique Barboza static void linux_sys_state_suspend(SuspendMode mode, Error **errp) 2051246d76ebSDaniel Henrique Barboza { 2052246d76ebSDaniel Henrique Barboza Error *local_err = NULL; 20538b020b5eSDaniel Henrique Barboza const char *sysfile_strs[3] = {"disk", "mem", NULL}; 20548b020b5eSDaniel Henrique Barboza const char *sysfile_str = sysfile_strs[mode]; 2055246d76ebSDaniel Henrique Barboza pid_t pid; 2056246d76ebSDaniel Henrique Barboza int status; 2057246d76ebSDaniel Henrique Barboza 20588b020b5eSDaniel Henrique Barboza if (!sysfile_str) { 2059246d76ebSDaniel Henrique Barboza error_setg(errp, "unknown guest suspend mode"); 2060246d76ebSDaniel Henrique Barboza return; 2061246d76ebSDaniel Henrique Barboza } 2062246d76ebSDaniel Henrique Barboza 2063246d76ebSDaniel Henrique Barboza pid = fork(); 2064246d76ebSDaniel Henrique Barboza if (!pid) { 2065246d76ebSDaniel Henrique Barboza /* child */ 2066246d76ebSDaniel Henrique Barboza int fd; 2067246d76ebSDaniel Henrique Barboza 2068246d76ebSDaniel Henrique Barboza setsid(); 2069246d76ebSDaniel Henrique Barboza reopen_fd_to_null(0); 2070246d76ebSDaniel Henrique Barboza reopen_fd_to_null(1); 2071246d76ebSDaniel Henrique Barboza reopen_fd_to_null(2); 2072246d76ebSDaniel Henrique Barboza 2073246d76ebSDaniel Henrique Barboza fd = open(LINUX_SYS_STATE_FILE, O_WRONLY); 2074246d76ebSDaniel Henrique Barboza if (fd < 0) { 2075246d76ebSDaniel Henrique Barboza _exit(EXIT_FAILURE); 2076246d76ebSDaniel Henrique Barboza } 2077246d76ebSDaniel Henrique Barboza 2078246d76ebSDaniel Henrique Barboza if (write(fd, sysfile_str, strlen(sysfile_str)) < 0) { 2079246d76ebSDaniel Henrique Barboza _exit(EXIT_FAILURE); 2080246d76ebSDaniel Henrique Barboza } 2081246d76ebSDaniel Henrique Barboza 2082246d76ebSDaniel Henrique Barboza _exit(EXIT_SUCCESS); 2083246d76ebSDaniel Henrique Barboza } else if (pid < 0) { 2084246d76ebSDaniel Henrique Barboza error_setg_errno(errp, errno, "failed to create child process"); 2085246d76ebSDaniel Henrique Barboza return; 2086246d76ebSDaniel Henrique Barboza } 2087246d76ebSDaniel Henrique Barboza 2088246d76ebSDaniel Henrique Barboza ga_wait_child(pid, &status, &local_err); 2089246d76ebSDaniel Henrique Barboza if (local_err) { 2090246d76ebSDaniel Henrique Barboza error_propagate(errp, local_err); 2091246d76ebSDaniel Henrique Barboza return; 2092246d76ebSDaniel Henrique Barboza } 2093246d76ebSDaniel Henrique Barboza 2094246d76ebSDaniel Henrique Barboza if (WEXITSTATUS(status)) { 2095246d76ebSDaniel Henrique Barboza error_setg(errp, "child process has failed to suspend"); 2096246d76ebSDaniel Henrique Barboza } 2097246d76ebSDaniel Henrique Barboza 2098246d76ebSDaniel Henrique Barboza } 2099246d76ebSDaniel Henrique Barboza 21008b020b5eSDaniel Henrique Barboza static void guest_suspend(SuspendMode mode, Error **errp) 210111d0f125SLuiz Capitulino { 21027b376087SLuiz Capitulino Error *local_err = NULL; 210373e1d8ebSDaniel Henrique Barboza bool mode_supported = false; 210411d0f125SLuiz Capitulino 210573e1d8ebSDaniel Henrique Barboza if (systemd_supports_mode(mode, &local_err)) { 210673e1d8ebSDaniel Henrique Barboza mode_supported = true; 2107067927d6SDaniel Henrique Barboza systemd_suspend(mode, &local_err); 210873e1d8ebSDaniel Henrique Barboza } 210973e1d8ebSDaniel Henrique Barboza 2110067927d6SDaniel Henrique Barboza if (!local_err) { 2111067927d6SDaniel Henrique Barboza return; 2112067927d6SDaniel Henrique Barboza } 2113067927d6SDaniel Henrique Barboza 2114067927d6SDaniel Henrique Barboza error_free(local_err); 21156a4a3853SVladimir Sementsov-Ogievskiy local_err = NULL; 2116067927d6SDaniel Henrique Barboza 211773e1d8ebSDaniel Henrique Barboza if (pmutils_supports_mode(mode, &local_err)) { 211873e1d8ebSDaniel Henrique Barboza mode_supported = true; 21198b020b5eSDaniel Henrique Barboza pmutils_suspend(mode, &local_err); 212073e1d8ebSDaniel Henrique Barboza } 212173e1d8ebSDaniel Henrique Barboza 2122246d76ebSDaniel Henrique Barboza if (!local_err) { 2123304a0fcbSDaniel Henrique Barboza return; 2124304a0fcbSDaniel Henrique Barboza } 2125304a0fcbSDaniel Henrique Barboza 2126246d76ebSDaniel Henrique Barboza error_free(local_err); 21276a4a3853SVladimir Sementsov-Ogievskiy local_err = NULL; 212811d0f125SLuiz Capitulino 212973e1d8ebSDaniel Henrique Barboza if (linux_sys_state_supports_mode(mode, &local_err)) { 213073e1d8ebSDaniel Henrique Barboza mode_supported = true; 21318b020b5eSDaniel Henrique Barboza linux_sys_state_suspend(mode, &local_err); 213273e1d8ebSDaniel Henrique Barboza } 213373e1d8ebSDaniel Henrique Barboza 213473e1d8ebSDaniel Henrique Barboza if (!mode_supported) { 21356a4a3853SVladimir Sementsov-Ogievskiy error_free(local_err); 213673e1d8ebSDaniel Henrique Barboza error_setg(errp, 213773e1d8ebSDaniel Henrique Barboza "the requested suspend mode is not supported by the guest"); 2138b2322003SMarkus Armbruster } else { 213977dbc81bSMarkus Armbruster error_propagate(errp, local_err); 21407b376087SLuiz Capitulino } 214111d0f125SLuiz Capitulino } 214211d0f125SLuiz Capitulino 214377dbc81bSMarkus Armbruster void qmp_guest_suspend_disk(Error **errp) 214411d0f125SLuiz Capitulino { 2145304a0fcbSDaniel Henrique Barboza guest_suspend(SUSPEND_MODE_DISK, errp); 214611d0f125SLuiz Capitulino } 214711d0f125SLuiz Capitulino 214877dbc81bSMarkus Armbruster void qmp_guest_suspend_ram(Error **errp) 2149fbf42210SLuiz Capitulino { 2150304a0fcbSDaniel Henrique Barboza guest_suspend(SUSPEND_MODE_RAM, errp); 2151fbf42210SLuiz Capitulino } 2152fbf42210SLuiz Capitulino 215377dbc81bSMarkus Armbruster void qmp_guest_suspend_hybrid(Error **errp) 215495f4f404SLuiz Capitulino { 2155304a0fcbSDaniel Henrique Barboza guest_suspend(SUSPEND_MODE_HYBRID, errp); 215695f4f404SLuiz Capitulino } 215795f4f404SLuiz Capitulino 2158d2baff62SLaszlo Ersek /* Transfer online/offline status between @vcpu and the guest system. 2159d2baff62SLaszlo Ersek * 2160d2baff62SLaszlo Ersek * On input either @errp or *@errp must be NULL. 2161d2baff62SLaszlo Ersek * 2162d2baff62SLaszlo Ersek * In system-to-@vcpu direction, the following @vcpu fields are accessed: 2163d2baff62SLaszlo Ersek * - R: vcpu->logical_id 2164d2baff62SLaszlo Ersek * - W: vcpu->online 2165d2baff62SLaszlo Ersek * - W: vcpu->can_offline 2166d2baff62SLaszlo Ersek * 2167d2baff62SLaszlo Ersek * In @vcpu-to-system direction, the following @vcpu fields are accessed: 2168d2baff62SLaszlo Ersek * - R: vcpu->logical_id 2169d2baff62SLaszlo Ersek * - R: vcpu->online 2170d2baff62SLaszlo Ersek * 2171d2baff62SLaszlo Ersek * Written members remain unmodified on error. 2172d2baff62SLaszlo Ersek */ 2173d2baff62SLaszlo Ersek static void transfer_vcpu(GuestLogicalProcessor *vcpu, bool sys2vcpu, 2174b4bf912aSIgor Mammedov char *dirpath, Error **errp) 2175d2baff62SLaszlo Ersek { 2176b4bf912aSIgor Mammedov int fd; 2177b4bf912aSIgor Mammedov int res; 2178d2baff62SLaszlo Ersek int dirfd; 2179b4bf912aSIgor Mammedov static const char fn[] = "online"; 2180d2baff62SLaszlo Ersek 2181d2baff62SLaszlo Ersek dirfd = open(dirpath, O_RDONLY | O_DIRECTORY); 2182d2baff62SLaszlo Ersek if (dirfd == -1) { 2183d2baff62SLaszlo Ersek error_setg_errno(errp, errno, "open(\"%s\")", dirpath); 2184b4bf912aSIgor Mammedov return; 2185b4bf912aSIgor Mammedov } 2186d2baff62SLaszlo Ersek 2187d2baff62SLaszlo Ersek fd = openat(dirfd, fn, sys2vcpu ? O_RDONLY : O_RDWR); 2188d2baff62SLaszlo Ersek if (fd == -1) { 2189d2baff62SLaszlo Ersek if (errno != ENOENT) { 2190d2baff62SLaszlo Ersek error_setg_errno(errp, errno, "open(\"%s/%s\")", dirpath, fn); 2191d2baff62SLaszlo Ersek } else if (sys2vcpu) { 2192d2baff62SLaszlo Ersek vcpu->online = true; 2193d2baff62SLaszlo Ersek vcpu->can_offline = false; 2194d2baff62SLaszlo Ersek } else if (!vcpu->online) { 2195d2baff62SLaszlo Ersek error_setg(errp, "logical processor #%" PRId64 " can't be " 2196d2baff62SLaszlo Ersek "offlined", vcpu->logical_id); 2197d2baff62SLaszlo Ersek } /* otherwise pretend successful re-onlining */ 2198d2baff62SLaszlo Ersek } else { 2199d2baff62SLaszlo Ersek unsigned char status; 2200d2baff62SLaszlo Ersek 2201d2baff62SLaszlo Ersek res = pread(fd, &status, 1, 0); 2202d2baff62SLaszlo Ersek if (res == -1) { 2203d2baff62SLaszlo Ersek error_setg_errno(errp, errno, "pread(\"%s/%s\")", dirpath, fn); 2204d2baff62SLaszlo Ersek } else if (res == 0) { 2205d2baff62SLaszlo Ersek error_setg(errp, "pread(\"%s/%s\"): unexpected EOF", dirpath, 2206d2baff62SLaszlo Ersek fn); 2207d2baff62SLaszlo Ersek } else if (sys2vcpu) { 2208d2baff62SLaszlo Ersek vcpu->online = (status != '0'); 2209d2baff62SLaszlo Ersek vcpu->can_offline = true; 2210d2baff62SLaszlo Ersek } else if (vcpu->online != (status != '0')) { 2211d2baff62SLaszlo Ersek status = '0' + vcpu->online; 2212d2baff62SLaszlo Ersek if (pwrite(fd, &status, 1, 0) == -1) { 2213d2baff62SLaszlo Ersek error_setg_errno(errp, errno, "pwrite(\"%s/%s\")", dirpath, 2214d2baff62SLaszlo Ersek fn); 2215d2baff62SLaszlo Ersek } 2216d2baff62SLaszlo Ersek } /* otherwise pretend successful re-(on|off)-lining */ 2217d2baff62SLaszlo Ersek 2218d2baff62SLaszlo Ersek res = close(fd); 2219d2baff62SLaszlo Ersek g_assert(res == 0); 2220d2baff62SLaszlo Ersek } 2221d2baff62SLaszlo Ersek 2222d2baff62SLaszlo Ersek res = close(dirfd); 2223d2baff62SLaszlo Ersek g_assert(res == 0); 2224d2baff62SLaszlo Ersek } 2225d2baff62SLaszlo Ersek 2226d2baff62SLaszlo Ersek GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp) 2227d2baff62SLaszlo Ersek { 2228c3033fd3SEric Blake GuestLogicalProcessorList *head, **tail; 222927e7de3cSLin Ma const char *cpu_dir = "/sys/devices/system/cpu"; 223027e7de3cSLin Ma const gchar *line; 223127e7de3cSLin Ma g_autoptr(GDir) cpu_gdir = NULL; 2232d2baff62SLaszlo Ersek Error *local_err = NULL; 2233d2baff62SLaszlo Ersek 2234d2baff62SLaszlo Ersek head = NULL; 2235c3033fd3SEric Blake tail = &head; 223627e7de3cSLin Ma cpu_gdir = g_dir_open(cpu_dir, 0, NULL); 2237d2baff62SLaszlo Ersek 223827e7de3cSLin Ma if (cpu_gdir == NULL) { 223927e7de3cSLin Ma error_setg_errno(errp, errno, "failed to list entries: %s", cpu_dir); 224027e7de3cSLin Ma return NULL; 224127e7de3cSLin Ma } 224227e7de3cSLin Ma 224327e7de3cSLin Ma while (local_err == NULL && (line = g_dir_read_name(cpu_gdir)) != NULL) { 2244d2baff62SLaszlo Ersek GuestLogicalProcessor *vcpu; 224527e7de3cSLin Ma int64_t id; 224627e7de3cSLin Ma if (sscanf(line, "cpu%" PRId64, &id)) { 224727e7de3cSLin Ma g_autofree char *path = g_strdup_printf("/sys/devices/system/cpu/" 224827e7de3cSLin Ma "cpu%" PRId64 "/", id); 2249d2baff62SLaszlo Ersek vcpu = g_malloc0(sizeof *vcpu); 2250b4bf912aSIgor Mammedov vcpu->logical_id = id; 2251d2baff62SLaszlo Ersek vcpu->has_can_offline = true; /* lolspeak ftw */ 2252b4bf912aSIgor Mammedov transfer_vcpu(vcpu, true, path, &local_err); 2253c3033fd3SEric Blake QAPI_LIST_APPEND(tail, vcpu); 2254d2baff62SLaszlo Ersek } 2255b4bf912aSIgor Mammedov } 2256d2baff62SLaszlo Ersek 2257d2baff62SLaszlo Ersek if (local_err == NULL) { 2258d2baff62SLaszlo Ersek /* there's no guest with zero VCPUs */ 2259d2baff62SLaszlo Ersek g_assert(head != NULL); 2260d2baff62SLaszlo Ersek return head; 2261d2baff62SLaszlo Ersek } 2262d2baff62SLaszlo Ersek 2263d2baff62SLaszlo Ersek qapi_free_GuestLogicalProcessorList(head); 2264d2baff62SLaszlo Ersek error_propagate(errp, local_err); 2265d2baff62SLaszlo Ersek return NULL; 2266d2baff62SLaszlo Ersek } 2267d2baff62SLaszlo Ersek 2268cbb65fc2SLaszlo Ersek int64_t qmp_guest_set_vcpus(GuestLogicalProcessorList *vcpus, Error **errp) 2269cbb65fc2SLaszlo Ersek { 2270cbb65fc2SLaszlo Ersek int64_t processed; 2271cbb65fc2SLaszlo Ersek Error *local_err = NULL; 2272cbb65fc2SLaszlo Ersek 2273cbb65fc2SLaszlo Ersek processed = 0; 2274cbb65fc2SLaszlo Ersek while (vcpus != NULL) { 2275b4bf912aSIgor Mammedov char *path = g_strdup_printf("/sys/devices/system/cpu/cpu%" PRId64 "/", 2276b4bf912aSIgor Mammedov vcpus->value->logical_id); 2277b4bf912aSIgor Mammedov 2278b4bf912aSIgor Mammedov transfer_vcpu(vcpus->value, false, path, &local_err); 2279b4bf912aSIgor Mammedov g_free(path); 2280cbb65fc2SLaszlo Ersek if (local_err != NULL) { 2281cbb65fc2SLaszlo Ersek break; 2282cbb65fc2SLaszlo Ersek } 2283cbb65fc2SLaszlo Ersek ++processed; 2284cbb65fc2SLaszlo Ersek vcpus = vcpus->next; 2285cbb65fc2SLaszlo Ersek } 2286cbb65fc2SLaszlo Ersek 2287cbb65fc2SLaszlo Ersek if (local_err != NULL) { 2288cbb65fc2SLaszlo Ersek if (processed == 0) { 2289cbb65fc2SLaszlo Ersek error_propagate(errp, local_err); 2290cbb65fc2SLaszlo Ersek } else { 2291cbb65fc2SLaszlo Ersek error_free(local_err); 2292cbb65fc2SLaszlo Ersek } 2293cbb65fc2SLaszlo Ersek } 2294cbb65fc2SLaszlo Ersek 2295cbb65fc2SLaszlo Ersek return processed; 2296cbb65fc2SLaszlo Ersek } 2297cbb65fc2SLaszlo Ersek 2298215a2771SDaniel P. Berrange void qmp_guest_set_user_password(const char *username, 2299215a2771SDaniel P. Berrange const char *password, 2300215a2771SDaniel P. Berrange bool crypted, 2301215a2771SDaniel P. Berrange Error **errp) 2302215a2771SDaniel P. Berrange { 2303215a2771SDaniel P. Berrange Error *local_err = NULL; 2304215a2771SDaniel P. Berrange char *passwd_path = NULL; 2305215a2771SDaniel P. Berrange pid_t pid; 2306215a2771SDaniel P. Berrange int status; 2307215a2771SDaniel P. Berrange int datafd[2] = { -1, -1 }; 2308215a2771SDaniel P. Berrange char *rawpasswddata = NULL; 2309215a2771SDaniel P. Berrange size_t rawpasswdlen; 2310215a2771SDaniel P. Berrange char *chpasswddata = NULL; 2311215a2771SDaniel P. Berrange size_t chpasswdlen; 2312215a2771SDaniel P. Berrange 2313920639caSDaniel P. Berrange rawpasswddata = (char *)qbase64_decode(password, -1, &rawpasswdlen, errp); 2314920639caSDaniel P. Berrange if (!rawpasswddata) { 2315920639caSDaniel P. Berrange return; 2316920639caSDaniel P. Berrange } 2317215a2771SDaniel P. Berrange rawpasswddata = g_renew(char, rawpasswddata, rawpasswdlen + 1); 2318215a2771SDaniel P. Berrange rawpasswddata[rawpasswdlen] = '\0'; 2319215a2771SDaniel P. Berrange 2320215a2771SDaniel P. Berrange if (strchr(rawpasswddata, '\n')) { 2321215a2771SDaniel P. Berrange error_setg(errp, "forbidden characters in raw password"); 2322215a2771SDaniel P. Berrange goto out; 2323215a2771SDaniel P. Berrange } 2324215a2771SDaniel P. Berrange 2325215a2771SDaniel P. Berrange if (strchr(username, '\n') || 2326215a2771SDaniel P. Berrange strchr(username, ':')) { 2327215a2771SDaniel P. Berrange error_setg(errp, "forbidden characters in username"); 2328215a2771SDaniel P. Berrange goto out; 2329215a2771SDaniel P. Berrange } 2330215a2771SDaniel P. Berrange 2331215a2771SDaniel P. Berrange chpasswddata = g_strdup_printf("%s:%s\n", username, rawpasswddata); 2332215a2771SDaniel P. Berrange chpasswdlen = strlen(chpasswddata); 2333215a2771SDaniel P. Berrange 2334215a2771SDaniel P. Berrange passwd_path = g_find_program_in_path("chpasswd"); 2335215a2771SDaniel P. Berrange 2336215a2771SDaniel P. Berrange if (!passwd_path) { 2337215a2771SDaniel P. Berrange error_setg(errp, "cannot find 'passwd' program in PATH"); 2338215a2771SDaniel P. Berrange goto out; 2339215a2771SDaniel P. Berrange } 2340215a2771SDaniel P. Berrange 2341ed78331dSMarc-André Lureau if (!g_unix_open_pipe(datafd, FD_CLOEXEC, NULL)) { 2342215a2771SDaniel P. Berrange error_setg(errp, "cannot create pipe FDs"); 2343215a2771SDaniel P. Berrange goto out; 2344215a2771SDaniel P. Berrange } 2345215a2771SDaniel P. Berrange 2346215a2771SDaniel P. Berrange pid = fork(); 2347215a2771SDaniel P. Berrange if (pid == 0) { 2348215a2771SDaniel P. Berrange close(datafd[1]); 2349215a2771SDaniel P. Berrange /* child */ 2350215a2771SDaniel P. Berrange setsid(); 2351215a2771SDaniel P. Berrange dup2(datafd[0], 0); 2352215a2771SDaniel P. Berrange reopen_fd_to_null(1); 2353215a2771SDaniel P. Berrange reopen_fd_to_null(2); 2354215a2771SDaniel P. Berrange 2355215a2771SDaniel P. Berrange if (crypted) { 2356fcc41961SMarc-André Lureau execl(passwd_path, "chpasswd", "-e", NULL); 2357215a2771SDaniel P. Berrange } else { 2358fcc41961SMarc-André Lureau execl(passwd_path, "chpasswd", NULL); 2359215a2771SDaniel P. Berrange } 2360215a2771SDaniel P. Berrange _exit(EXIT_FAILURE); 2361215a2771SDaniel P. Berrange } else if (pid < 0) { 2362215a2771SDaniel P. Berrange error_setg_errno(errp, errno, "failed to create child process"); 2363215a2771SDaniel P. Berrange goto out; 2364215a2771SDaniel P. Berrange } 2365215a2771SDaniel P. Berrange close(datafd[0]); 2366215a2771SDaniel P. Berrange datafd[0] = -1; 2367215a2771SDaniel P. Berrange 2368215a2771SDaniel P. Berrange if (qemu_write_full(datafd[1], chpasswddata, chpasswdlen) != chpasswdlen) { 2369215a2771SDaniel P. Berrange error_setg_errno(errp, errno, "cannot write new account password"); 2370215a2771SDaniel P. Berrange goto out; 2371215a2771SDaniel P. Berrange } 2372215a2771SDaniel P. Berrange close(datafd[1]); 2373215a2771SDaniel P. Berrange datafd[1] = -1; 2374215a2771SDaniel P. Berrange 2375215a2771SDaniel P. Berrange ga_wait_child(pid, &status, &local_err); 2376215a2771SDaniel P. Berrange if (local_err) { 2377215a2771SDaniel P. Berrange error_propagate(errp, local_err); 2378215a2771SDaniel P. Berrange goto out; 2379215a2771SDaniel P. Berrange } 2380215a2771SDaniel P. Berrange 2381215a2771SDaniel P. Berrange if (!WIFEXITED(status)) { 2382215a2771SDaniel P. Berrange error_setg(errp, "child process has terminated abnormally"); 2383215a2771SDaniel P. Berrange goto out; 2384215a2771SDaniel P. Berrange } 2385215a2771SDaniel P. Berrange 2386215a2771SDaniel P. Berrange if (WEXITSTATUS(status)) { 2387215a2771SDaniel P. Berrange error_setg(errp, "child process has failed to set user password"); 2388215a2771SDaniel P. Berrange goto out; 2389215a2771SDaniel P. Berrange } 2390215a2771SDaniel P. Berrange 2391215a2771SDaniel P. Berrange out: 2392215a2771SDaniel P. Berrange g_free(chpasswddata); 2393215a2771SDaniel P. Berrange g_free(rawpasswddata); 2394215a2771SDaniel P. Berrange g_free(passwd_path); 2395215a2771SDaniel P. Berrange if (datafd[0] != -1) { 2396215a2771SDaniel P. Berrange close(datafd[0]); 2397215a2771SDaniel P. Berrange } 2398215a2771SDaniel P. Berrange if (datafd[1] != -1) { 2399215a2771SDaniel P. Berrange close(datafd[1]); 2400215a2771SDaniel P. Berrange } 2401215a2771SDaniel P. Berrange } 2402215a2771SDaniel P. Berrange 2403bd240fcaSzhanghailiang static void ga_read_sysfs_file(int dirfd, const char *pathname, char *buf, 2404bd240fcaSzhanghailiang int size, Error **errp) 2405bd240fcaSzhanghailiang { 2406bd240fcaSzhanghailiang int fd; 2407bd240fcaSzhanghailiang int res; 2408bd240fcaSzhanghailiang 2409bd240fcaSzhanghailiang errno = 0; 2410bd240fcaSzhanghailiang fd = openat(dirfd, pathname, O_RDONLY); 2411bd240fcaSzhanghailiang if (fd == -1) { 2412bd240fcaSzhanghailiang error_setg_errno(errp, errno, "open sysfs file \"%s\"", pathname); 2413bd240fcaSzhanghailiang return; 2414bd240fcaSzhanghailiang } 2415bd240fcaSzhanghailiang 2416bd240fcaSzhanghailiang res = pread(fd, buf, size, 0); 2417bd240fcaSzhanghailiang if (res == -1) { 2418bd240fcaSzhanghailiang error_setg_errno(errp, errno, "pread sysfs file \"%s\"", pathname); 2419bd240fcaSzhanghailiang } else if (res == 0) { 2420bd240fcaSzhanghailiang error_setg(errp, "pread sysfs file \"%s\": unexpected EOF", pathname); 2421bd240fcaSzhanghailiang } 2422bd240fcaSzhanghailiang close(fd); 2423bd240fcaSzhanghailiang } 2424bd240fcaSzhanghailiang 2425bd240fcaSzhanghailiang static void ga_write_sysfs_file(int dirfd, const char *pathname, 2426bd240fcaSzhanghailiang const char *buf, int size, Error **errp) 2427bd240fcaSzhanghailiang { 2428bd240fcaSzhanghailiang int fd; 2429bd240fcaSzhanghailiang 2430bd240fcaSzhanghailiang errno = 0; 2431bd240fcaSzhanghailiang fd = openat(dirfd, pathname, O_WRONLY); 2432bd240fcaSzhanghailiang if (fd == -1) { 2433bd240fcaSzhanghailiang error_setg_errno(errp, errno, "open sysfs file \"%s\"", pathname); 2434bd240fcaSzhanghailiang return; 2435bd240fcaSzhanghailiang } 2436bd240fcaSzhanghailiang 2437bd240fcaSzhanghailiang if (pwrite(fd, buf, size, 0) == -1) { 2438bd240fcaSzhanghailiang error_setg_errno(errp, errno, "pwrite sysfs file \"%s\"", pathname); 2439bd240fcaSzhanghailiang } 2440bd240fcaSzhanghailiang 2441bd240fcaSzhanghailiang close(fd); 2442bd240fcaSzhanghailiang } 2443bd240fcaSzhanghailiang 2444bd240fcaSzhanghailiang /* Transfer online/offline status between @mem_blk and the guest system. 2445bd240fcaSzhanghailiang * 2446bd240fcaSzhanghailiang * On input either @errp or *@errp must be NULL. 2447bd240fcaSzhanghailiang * 2448bd240fcaSzhanghailiang * In system-to-@mem_blk direction, the following @mem_blk fields are accessed: 2449bd240fcaSzhanghailiang * - R: mem_blk->phys_index 2450bd240fcaSzhanghailiang * - W: mem_blk->online 2451bd240fcaSzhanghailiang * - W: mem_blk->can_offline 2452bd240fcaSzhanghailiang * 2453bd240fcaSzhanghailiang * In @mem_blk-to-system direction, the following @mem_blk fields are accessed: 2454bd240fcaSzhanghailiang * - R: mem_blk->phys_index 2455bd240fcaSzhanghailiang * - R: mem_blk->online 2456bd240fcaSzhanghailiang *- R: mem_blk->can_offline 2457bd240fcaSzhanghailiang * Written members remain unmodified on error. 2458bd240fcaSzhanghailiang */ 2459bd240fcaSzhanghailiang static void transfer_memory_block(GuestMemoryBlock *mem_blk, bool sys2memblk, 2460bd240fcaSzhanghailiang GuestMemoryBlockResponse *result, 2461bd240fcaSzhanghailiang Error **errp) 2462bd240fcaSzhanghailiang { 2463bd240fcaSzhanghailiang char *dirpath; 2464bd240fcaSzhanghailiang int dirfd; 2465bd240fcaSzhanghailiang char *status; 2466bd240fcaSzhanghailiang Error *local_err = NULL; 2467bd240fcaSzhanghailiang 2468bd240fcaSzhanghailiang if (!sys2memblk) { 2469bd240fcaSzhanghailiang DIR *dp; 2470bd240fcaSzhanghailiang 2471bd240fcaSzhanghailiang if (!result) { 2472bd240fcaSzhanghailiang error_setg(errp, "Internal error, 'result' should not be NULL"); 2473bd240fcaSzhanghailiang return; 2474bd240fcaSzhanghailiang } 2475bd240fcaSzhanghailiang errno = 0; 2476bd240fcaSzhanghailiang dp = opendir("/sys/devices/system/memory/"); 2477bd240fcaSzhanghailiang /* if there is no 'memory' directory in sysfs, 2478bd240fcaSzhanghailiang * we think this VM does not support online/offline memory block, 2479bd240fcaSzhanghailiang * any other solution? 2480bd240fcaSzhanghailiang */ 24819879f5acSPhilippe Mathieu-Daudé if (!dp) { 24829879f5acSPhilippe Mathieu-Daudé if (errno == ENOENT) { 2483bd240fcaSzhanghailiang result->response = 2484bd240fcaSzhanghailiang GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_NOT_SUPPORTED; 24859879f5acSPhilippe Mathieu-Daudé } 2486bd240fcaSzhanghailiang goto out1; 2487bd240fcaSzhanghailiang } 2488bd240fcaSzhanghailiang closedir(dp); 2489bd240fcaSzhanghailiang } 2490bd240fcaSzhanghailiang 2491bd240fcaSzhanghailiang dirpath = g_strdup_printf("/sys/devices/system/memory/memory%" PRId64 "/", 2492bd240fcaSzhanghailiang mem_blk->phys_index); 2493bd240fcaSzhanghailiang dirfd = open(dirpath, O_RDONLY | O_DIRECTORY); 2494bd240fcaSzhanghailiang if (dirfd == -1) { 2495bd240fcaSzhanghailiang if (sys2memblk) { 2496bd240fcaSzhanghailiang error_setg_errno(errp, errno, "open(\"%s\")", dirpath); 2497bd240fcaSzhanghailiang } else { 2498bd240fcaSzhanghailiang if (errno == ENOENT) { 2499bd240fcaSzhanghailiang result->response = GUEST_MEMORY_BLOCK_RESPONSE_TYPE_NOT_FOUND; 2500bd240fcaSzhanghailiang } else { 2501bd240fcaSzhanghailiang result->response = 2502bd240fcaSzhanghailiang GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_FAILED; 2503bd240fcaSzhanghailiang } 2504bd240fcaSzhanghailiang } 2505bd240fcaSzhanghailiang g_free(dirpath); 2506bd240fcaSzhanghailiang goto out1; 2507bd240fcaSzhanghailiang } 2508bd240fcaSzhanghailiang g_free(dirpath); 2509bd240fcaSzhanghailiang 2510bd240fcaSzhanghailiang status = g_malloc0(10); 2511bd240fcaSzhanghailiang ga_read_sysfs_file(dirfd, "state", status, 10, &local_err); 2512bd240fcaSzhanghailiang if (local_err) { 2513bd240fcaSzhanghailiang /* treat with sysfs file that not exist in old kernel */ 2514bd240fcaSzhanghailiang if (errno == ENOENT) { 2515bd240fcaSzhanghailiang error_free(local_err); 2516bd240fcaSzhanghailiang if (sys2memblk) { 2517bd240fcaSzhanghailiang mem_blk->online = true; 2518bd240fcaSzhanghailiang mem_blk->can_offline = false; 2519bd240fcaSzhanghailiang } else if (!mem_blk->online) { 2520bd240fcaSzhanghailiang result->response = 2521bd240fcaSzhanghailiang GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_NOT_SUPPORTED; 2522bd240fcaSzhanghailiang } 2523bd240fcaSzhanghailiang } else { 2524bd240fcaSzhanghailiang if (sys2memblk) { 2525bd240fcaSzhanghailiang error_propagate(errp, local_err); 2526bd240fcaSzhanghailiang } else { 2527b368123dSMarkus Armbruster error_free(local_err); 2528bd240fcaSzhanghailiang result->response = 2529bd240fcaSzhanghailiang GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_FAILED; 2530bd240fcaSzhanghailiang } 2531bd240fcaSzhanghailiang } 2532bd240fcaSzhanghailiang goto out2; 2533bd240fcaSzhanghailiang } 2534bd240fcaSzhanghailiang 2535bd240fcaSzhanghailiang if (sys2memblk) { 2536bd240fcaSzhanghailiang char removable = '0'; 2537bd240fcaSzhanghailiang 2538bd240fcaSzhanghailiang mem_blk->online = (strncmp(status, "online", 6) == 0); 2539bd240fcaSzhanghailiang 2540bd240fcaSzhanghailiang ga_read_sysfs_file(dirfd, "removable", &removable, 1, &local_err); 2541bd240fcaSzhanghailiang if (local_err) { 254267cc32ebSVeres Lajos /* if no 'removable' file, it doesn't support offline mem blk */ 2543bd240fcaSzhanghailiang if (errno == ENOENT) { 2544bd240fcaSzhanghailiang error_free(local_err); 2545bd240fcaSzhanghailiang mem_blk->can_offline = false; 2546bd240fcaSzhanghailiang } else { 2547bd240fcaSzhanghailiang error_propagate(errp, local_err); 2548bd240fcaSzhanghailiang } 2549bd240fcaSzhanghailiang } else { 2550bd240fcaSzhanghailiang mem_blk->can_offline = (removable != '0'); 2551bd240fcaSzhanghailiang } 2552bd240fcaSzhanghailiang } else { 2553bd240fcaSzhanghailiang if (mem_blk->online != (strncmp(status, "online", 6) == 0)) { 25547064024dSMarc-André Lureau const char *new_state = mem_blk->online ? "online" : "offline"; 2555bd240fcaSzhanghailiang 2556bd240fcaSzhanghailiang ga_write_sysfs_file(dirfd, "state", new_state, strlen(new_state), 2557bd240fcaSzhanghailiang &local_err); 2558bd240fcaSzhanghailiang if (local_err) { 2559bd240fcaSzhanghailiang error_free(local_err); 2560bd240fcaSzhanghailiang result->response = 2561bd240fcaSzhanghailiang GUEST_MEMORY_BLOCK_RESPONSE_TYPE_OPERATION_FAILED; 2562bd240fcaSzhanghailiang goto out2; 2563bd240fcaSzhanghailiang } 2564bd240fcaSzhanghailiang 2565bd240fcaSzhanghailiang result->response = GUEST_MEMORY_BLOCK_RESPONSE_TYPE_SUCCESS; 2566bd240fcaSzhanghailiang result->has_error_code = false; 2567bd240fcaSzhanghailiang } /* otherwise pretend successful re-(on|off)-lining */ 2568bd240fcaSzhanghailiang } 2569bd240fcaSzhanghailiang g_free(status); 2570bd240fcaSzhanghailiang close(dirfd); 2571bd240fcaSzhanghailiang return; 2572bd240fcaSzhanghailiang 2573bd240fcaSzhanghailiang out2: 2574bd240fcaSzhanghailiang g_free(status); 2575bd240fcaSzhanghailiang close(dirfd); 2576bd240fcaSzhanghailiang out1: 2577bd240fcaSzhanghailiang if (!sys2memblk) { 2578bd240fcaSzhanghailiang result->has_error_code = true; 2579bd240fcaSzhanghailiang result->error_code = errno; 2580bd240fcaSzhanghailiang } 2581bd240fcaSzhanghailiang } 2582bd240fcaSzhanghailiang 2583a065aaa9Szhanghailiang GuestMemoryBlockList *qmp_guest_get_memory_blocks(Error **errp) 2584a065aaa9Szhanghailiang { 2585c3033fd3SEric Blake GuestMemoryBlockList *head, **tail; 2586bd240fcaSzhanghailiang Error *local_err = NULL; 2587bd240fcaSzhanghailiang struct dirent *de; 2588bd240fcaSzhanghailiang DIR *dp; 2589bd240fcaSzhanghailiang 2590bd240fcaSzhanghailiang head = NULL; 2591c3033fd3SEric Blake tail = &head; 2592bd240fcaSzhanghailiang 2593bd240fcaSzhanghailiang dp = opendir("/sys/devices/system/memory/"); 2594bd240fcaSzhanghailiang if (!dp) { 2595f693fe6eSMichael Roth /* it's ok if this happens to be a system that doesn't expose 2596f693fe6eSMichael Roth * memory blocks via sysfs, but otherwise we should report 2597f693fe6eSMichael Roth * an error 2598f693fe6eSMichael Roth */ 2599f693fe6eSMichael Roth if (errno != ENOENT) { 2600bd240fcaSzhanghailiang error_setg_errno(errp, errno, "Can't open directory" 26019af9e0feSMarkus Armbruster "\"/sys/devices/system/memory/\""); 2602f693fe6eSMichael Roth } 2603bd240fcaSzhanghailiang return NULL; 2604bd240fcaSzhanghailiang } 2605bd240fcaSzhanghailiang 2606bd240fcaSzhanghailiang /* Note: the phys_index of memory block may be discontinuous, 2607bd240fcaSzhanghailiang * this is because a memblk is the unit of the Sparse Memory design, which 2608bd240fcaSzhanghailiang * allows discontinuous memory ranges (ex. NUMA), so here we should 2609bd240fcaSzhanghailiang * traverse the memory block directory. 2610bd240fcaSzhanghailiang */ 2611bd240fcaSzhanghailiang while ((de = readdir(dp)) != NULL) { 2612bd240fcaSzhanghailiang GuestMemoryBlock *mem_blk; 2613bd240fcaSzhanghailiang 2614bd240fcaSzhanghailiang if ((strncmp(de->d_name, "memory", 6) != 0) || 2615bd240fcaSzhanghailiang !(de->d_type & DT_DIR)) { 2616bd240fcaSzhanghailiang continue; 2617bd240fcaSzhanghailiang } 2618bd240fcaSzhanghailiang 2619bd240fcaSzhanghailiang mem_blk = g_malloc0(sizeof *mem_blk); 2620bd240fcaSzhanghailiang /* The d_name is "memoryXXX", phys_index is block id, same as XXX */ 2621bd240fcaSzhanghailiang mem_blk->phys_index = strtoul(&de->d_name[6], NULL, 10); 2622bd240fcaSzhanghailiang mem_blk->has_can_offline = true; /* lolspeak ftw */ 2623bd240fcaSzhanghailiang transfer_memory_block(mem_blk, true, NULL, &local_err); 26244155c998SMarkus Armbruster if (local_err) { 26254155c998SMarkus Armbruster break; 26264155c998SMarkus Armbruster } 2627bd240fcaSzhanghailiang 2628c3033fd3SEric Blake QAPI_LIST_APPEND(tail, mem_blk); 2629bd240fcaSzhanghailiang } 2630bd240fcaSzhanghailiang 2631bd240fcaSzhanghailiang closedir(dp); 2632bd240fcaSzhanghailiang if (local_err == NULL) { 2633bd240fcaSzhanghailiang /* there's no guest with zero memory blocks */ 2634bd240fcaSzhanghailiang if (head == NULL) { 2635bd240fcaSzhanghailiang error_setg(errp, "guest reported zero memory blocks!"); 2636bd240fcaSzhanghailiang } 2637bd240fcaSzhanghailiang return head; 2638bd240fcaSzhanghailiang } 2639bd240fcaSzhanghailiang 2640bd240fcaSzhanghailiang qapi_free_GuestMemoryBlockList(head); 2641bd240fcaSzhanghailiang error_propagate(errp, local_err); 2642a065aaa9Szhanghailiang return NULL; 2643a065aaa9Szhanghailiang } 2644a065aaa9Szhanghailiang 2645a065aaa9Szhanghailiang GuestMemoryBlockResponseList * 2646a065aaa9Szhanghailiang qmp_guest_set_memory_blocks(GuestMemoryBlockList *mem_blks, Error **errp) 2647a065aaa9Szhanghailiang { 2648c3033fd3SEric Blake GuestMemoryBlockResponseList *head, **tail; 264932ca7927Szhanghailiang Error *local_err = NULL; 265032ca7927Szhanghailiang 265132ca7927Szhanghailiang head = NULL; 2652c3033fd3SEric Blake tail = &head; 265332ca7927Szhanghailiang 265432ca7927Szhanghailiang while (mem_blks != NULL) { 265532ca7927Szhanghailiang GuestMemoryBlockResponse *result; 265632ca7927Szhanghailiang GuestMemoryBlock *current_mem_blk = mem_blks->value; 265732ca7927Szhanghailiang 265832ca7927Szhanghailiang result = g_malloc0(sizeof(*result)); 265932ca7927Szhanghailiang result->phys_index = current_mem_blk->phys_index; 266032ca7927Szhanghailiang transfer_memory_block(current_mem_blk, false, result, &local_err); 266132ca7927Szhanghailiang if (local_err) { /* should never happen */ 266232ca7927Szhanghailiang goto err; 266332ca7927Szhanghailiang } 266432ca7927Szhanghailiang 2665c3033fd3SEric Blake QAPI_LIST_APPEND(tail, result); 266632ca7927Szhanghailiang mem_blks = mem_blks->next; 266732ca7927Szhanghailiang } 266832ca7927Szhanghailiang 266932ca7927Szhanghailiang return head; 267032ca7927Szhanghailiang err: 267132ca7927Szhanghailiang qapi_free_GuestMemoryBlockResponseList(head); 267232ca7927Szhanghailiang error_propagate(errp, local_err); 2673a065aaa9Szhanghailiang return NULL; 2674a065aaa9Szhanghailiang } 2675a065aaa9Szhanghailiang 2676a065aaa9Szhanghailiang GuestMemoryBlockInfo *qmp_guest_get_memory_block_info(Error **errp) 2677a065aaa9Szhanghailiang { 2678ef82b60bSzhanghailiang Error *local_err = NULL; 2679ef82b60bSzhanghailiang char *dirpath; 2680ef82b60bSzhanghailiang int dirfd; 2681ef82b60bSzhanghailiang char *buf; 2682ef82b60bSzhanghailiang GuestMemoryBlockInfo *info; 2683ef82b60bSzhanghailiang 2684ef82b60bSzhanghailiang dirpath = g_strdup_printf("/sys/devices/system/memory/"); 2685ef82b60bSzhanghailiang dirfd = open(dirpath, O_RDONLY | O_DIRECTORY); 2686ef82b60bSzhanghailiang if (dirfd == -1) { 2687ef82b60bSzhanghailiang error_setg_errno(errp, errno, "open(\"%s\")", dirpath); 2688ef82b60bSzhanghailiang g_free(dirpath); 2689a065aaa9Szhanghailiang return NULL; 2690a065aaa9Szhanghailiang } 2691ef82b60bSzhanghailiang g_free(dirpath); 2692ef82b60bSzhanghailiang 2693ef82b60bSzhanghailiang buf = g_malloc0(20); 2694ef82b60bSzhanghailiang ga_read_sysfs_file(dirfd, "block_size_bytes", buf, 20, &local_err); 26958ce1ee46SShannon Zhao close(dirfd); 2696ef82b60bSzhanghailiang if (local_err) { 2697ef82b60bSzhanghailiang g_free(buf); 2698ef82b60bSzhanghailiang error_propagate(errp, local_err); 2699ef82b60bSzhanghailiang return NULL; 2700ef82b60bSzhanghailiang } 2701ef82b60bSzhanghailiang 2702ef82b60bSzhanghailiang info = g_new0(GuestMemoryBlockInfo, 1); 2703ef82b60bSzhanghailiang info->size = strtol(buf, NULL, 16); /* the unit is bytes */ 2704ef82b60bSzhanghailiang 2705ef82b60bSzhanghailiang g_free(buf); 2706ef82b60bSzhanghailiang 2707ef82b60bSzhanghailiang return info; 2708ef82b60bSzhanghailiang } 2709a065aaa9Szhanghailiang 2710e72c3f2eSMichael Roth #else /* defined(__linux__) */ 2711e72c3f2eSMichael Roth 271277dbc81bSMarkus Armbruster void qmp_guest_suspend_disk(Error **errp) 2713e72c3f2eSMichael Roth { 2714c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2715e72c3f2eSMichael Roth } 2716e72c3f2eSMichael Roth 271777dbc81bSMarkus Armbruster void qmp_guest_suspend_ram(Error **errp) 2718e72c3f2eSMichael Roth { 2719c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2720e72c3f2eSMichael Roth } 2721e72c3f2eSMichael Roth 272277dbc81bSMarkus Armbruster void qmp_guest_suspend_hybrid(Error **errp) 2723e72c3f2eSMichael Roth { 2724c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2725e72c3f2eSMichael Roth } 2726e72c3f2eSMichael Roth 2727d2baff62SLaszlo Ersek GuestLogicalProcessorList *qmp_guest_get_vcpus(Error **errp) 2728d2baff62SLaszlo Ersek { 2729c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2730d2baff62SLaszlo Ersek return NULL; 2731d2baff62SLaszlo Ersek } 2732d2baff62SLaszlo Ersek 2733cbb65fc2SLaszlo Ersek int64_t qmp_guest_set_vcpus(GuestLogicalProcessorList *vcpus, Error **errp) 2734cbb65fc2SLaszlo Ersek { 2735c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2736cbb65fc2SLaszlo Ersek return -1; 2737cbb65fc2SLaszlo Ersek } 2738cbb65fc2SLaszlo Ersek 2739215a2771SDaniel P. Berrange void qmp_guest_set_user_password(const char *username, 2740215a2771SDaniel P. Berrange const char *password, 2741215a2771SDaniel P. Berrange bool crypted, 2742215a2771SDaniel P. Berrange Error **errp) 2743215a2771SDaniel P. Berrange { 2744c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2745215a2771SDaniel P. Berrange } 2746215a2771SDaniel P. Berrange 2747a065aaa9Szhanghailiang GuestMemoryBlockList *qmp_guest_get_memory_blocks(Error **errp) 2748a065aaa9Szhanghailiang { 2749c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2750a065aaa9Szhanghailiang return NULL; 2751a065aaa9Szhanghailiang } 2752a065aaa9Szhanghailiang 2753a065aaa9Szhanghailiang GuestMemoryBlockResponseList * 2754a065aaa9Szhanghailiang qmp_guest_set_memory_blocks(GuestMemoryBlockList *mem_blks, Error **errp) 2755a065aaa9Szhanghailiang { 2756c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2757a065aaa9Szhanghailiang return NULL; 2758a065aaa9Szhanghailiang } 2759a065aaa9Szhanghailiang 2760a065aaa9Szhanghailiang GuestMemoryBlockInfo *qmp_guest_get_memory_block_info(Error **errp) 2761a065aaa9Szhanghailiang { 2762c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 2763a065aaa9Szhanghailiang return NULL; 2764a065aaa9Szhanghailiang } 2765a065aaa9Szhanghailiang 2766e72c3f2eSMichael Roth #endif 2767e72c3f2eSMichael Roth 276859e35c7bSAndrew Deason #ifdef HAVE_GETIFADDRS 276959e35c7bSAndrew Deason static GuestNetworkInterface * 277059e35c7bSAndrew Deason guest_find_interface(GuestNetworkInterfaceList *head, 277159e35c7bSAndrew Deason const char *name) 277259e35c7bSAndrew Deason { 277359e35c7bSAndrew Deason for (; head; head = head->next) { 277459e35c7bSAndrew Deason if (strcmp(head->value->name, name) == 0) { 277559e35c7bSAndrew Deason return head->value; 277659e35c7bSAndrew Deason } 277759e35c7bSAndrew Deason } 277859e35c7bSAndrew Deason 277959e35c7bSAndrew Deason return NULL; 278059e35c7bSAndrew Deason } 278159e35c7bSAndrew Deason 278259e35c7bSAndrew Deason static int guest_get_network_stats(const char *name, 278359e35c7bSAndrew Deason GuestNetworkInterfaceStat *stats) 278459e35c7bSAndrew Deason { 278570335c46SAndrew Deason #ifdef CONFIG_LINUX 278659e35c7bSAndrew Deason int name_len; 278759e35c7bSAndrew Deason char const *devinfo = "/proc/net/dev"; 278859e35c7bSAndrew Deason FILE *fp; 278959e35c7bSAndrew Deason char *line = NULL, *colon; 279059e35c7bSAndrew Deason size_t n = 0; 279159e35c7bSAndrew Deason fp = fopen(devinfo, "r"); 279259e35c7bSAndrew Deason if (!fp) { 2793a539dc8aSAndrew Deason g_debug("failed to open network stats %s: %s", devinfo, 2794a539dc8aSAndrew Deason g_strerror(errno)); 279559e35c7bSAndrew Deason return -1; 279659e35c7bSAndrew Deason } 279759e35c7bSAndrew Deason name_len = strlen(name); 279859e35c7bSAndrew Deason while (getline(&line, &n, fp) != -1) { 279959e35c7bSAndrew Deason long long dummy; 280059e35c7bSAndrew Deason long long rx_bytes; 280159e35c7bSAndrew Deason long long rx_packets; 280259e35c7bSAndrew Deason long long rx_errs; 280359e35c7bSAndrew Deason long long rx_dropped; 280459e35c7bSAndrew Deason long long tx_bytes; 280559e35c7bSAndrew Deason long long tx_packets; 280659e35c7bSAndrew Deason long long tx_errs; 280759e35c7bSAndrew Deason long long tx_dropped; 280859e35c7bSAndrew Deason char *trim_line; 280959e35c7bSAndrew Deason trim_line = g_strchug(line); 281059e35c7bSAndrew Deason if (trim_line[0] == '\0') { 281159e35c7bSAndrew Deason continue; 281259e35c7bSAndrew Deason } 281359e35c7bSAndrew Deason colon = strchr(trim_line, ':'); 281459e35c7bSAndrew Deason if (!colon) { 281559e35c7bSAndrew Deason continue; 281659e35c7bSAndrew Deason } 281759e35c7bSAndrew Deason if (colon - name_len == trim_line && 281859e35c7bSAndrew Deason strncmp(trim_line, name, name_len) == 0) { 281959e35c7bSAndrew Deason if (sscanf(colon + 1, 282059e35c7bSAndrew Deason "%lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld", 282159e35c7bSAndrew Deason &rx_bytes, &rx_packets, &rx_errs, &rx_dropped, 282259e35c7bSAndrew Deason &dummy, &dummy, &dummy, &dummy, 282359e35c7bSAndrew Deason &tx_bytes, &tx_packets, &tx_errs, &tx_dropped, 282459e35c7bSAndrew Deason &dummy, &dummy, &dummy, &dummy) != 16) { 282559e35c7bSAndrew Deason continue; 282659e35c7bSAndrew Deason } 282759e35c7bSAndrew Deason stats->rx_bytes = rx_bytes; 282859e35c7bSAndrew Deason stats->rx_packets = rx_packets; 282959e35c7bSAndrew Deason stats->rx_errs = rx_errs; 283059e35c7bSAndrew Deason stats->rx_dropped = rx_dropped; 283159e35c7bSAndrew Deason stats->tx_bytes = tx_bytes; 283259e35c7bSAndrew Deason stats->tx_packets = tx_packets; 283359e35c7bSAndrew Deason stats->tx_errs = tx_errs; 283459e35c7bSAndrew Deason stats->tx_dropped = tx_dropped; 283559e35c7bSAndrew Deason fclose(fp); 283659e35c7bSAndrew Deason g_free(line); 283759e35c7bSAndrew Deason return 0; 283859e35c7bSAndrew Deason } 283959e35c7bSAndrew Deason } 284059e35c7bSAndrew Deason fclose(fp); 284159e35c7bSAndrew Deason g_free(line); 284259e35c7bSAndrew Deason g_debug("/proc/net/dev: Interface '%s' not found", name); 2843a539dc8aSAndrew Deason #else /* !CONFIG_LINUX */ 2844a539dc8aSAndrew Deason g_debug("Network stats reporting available only for Linux"); 2845a539dc8aSAndrew Deason #endif /* !CONFIG_LINUX */ 284659e35c7bSAndrew Deason return -1; 284759e35c7bSAndrew Deason } 284859e35c7bSAndrew Deason 284959e35c7bSAndrew Deason /* 285059e35c7bSAndrew Deason * Build information about guest interfaces 285159e35c7bSAndrew Deason */ 285259e35c7bSAndrew Deason GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp) 285359e35c7bSAndrew Deason { 285459e35c7bSAndrew Deason GuestNetworkInterfaceList *head = NULL, **tail = &head; 285559e35c7bSAndrew Deason struct ifaddrs *ifap, *ifa; 285659e35c7bSAndrew Deason 285759e35c7bSAndrew Deason if (getifaddrs(&ifap) < 0) { 285859e35c7bSAndrew Deason error_setg_errno(errp, errno, "getifaddrs failed"); 285959e35c7bSAndrew Deason goto error; 286059e35c7bSAndrew Deason } 286159e35c7bSAndrew Deason 286259e35c7bSAndrew Deason for (ifa = ifap; ifa; ifa = ifa->ifa_next) { 286359e35c7bSAndrew Deason GuestNetworkInterface *info; 286459e35c7bSAndrew Deason GuestIpAddressList **address_tail; 286559e35c7bSAndrew Deason GuestIpAddress *address_item = NULL; 286659e35c7bSAndrew Deason GuestNetworkInterfaceStat *interface_stat = NULL; 286759e35c7bSAndrew Deason char addr4[INET_ADDRSTRLEN]; 286859e35c7bSAndrew Deason char addr6[INET6_ADDRSTRLEN]; 286959e35c7bSAndrew Deason int sock; 287059e35c7bSAndrew Deason struct ifreq ifr; 287159e35c7bSAndrew Deason unsigned char *mac_addr; 287259e35c7bSAndrew Deason void *p; 287359e35c7bSAndrew Deason 287459e35c7bSAndrew Deason g_debug("Processing %s interface", ifa->ifa_name); 287559e35c7bSAndrew Deason 287659e35c7bSAndrew Deason info = guest_find_interface(head, ifa->ifa_name); 287759e35c7bSAndrew Deason 287859e35c7bSAndrew Deason if (!info) { 287959e35c7bSAndrew Deason info = g_malloc0(sizeof(*info)); 288059e35c7bSAndrew Deason info->name = g_strdup(ifa->ifa_name); 288159e35c7bSAndrew Deason 288259e35c7bSAndrew Deason QAPI_LIST_APPEND(tail, info); 288359e35c7bSAndrew Deason } 288459e35c7bSAndrew Deason 2885aec0730eSAndrew Deason if (!info->has_hardware_address) { 288659e35c7bSAndrew Deason /* we haven't obtained HW address yet */ 288759e35c7bSAndrew Deason sock = socket(PF_INET, SOCK_STREAM, 0); 288859e35c7bSAndrew Deason if (sock == -1) { 288959e35c7bSAndrew Deason error_setg_errno(errp, errno, "failed to create socket"); 289059e35c7bSAndrew Deason goto error; 289159e35c7bSAndrew Deason } 289259e35c7bSAndrew Deason 289359e35c7bSAndrew Deason memset(&ifr, 0, sizeof(ifr)); 289459e35c7bSAndrew Deason pstrcpy(ifr.ifr_name, IF_NAMESIZE, info->name); 289559e35c7bSAndrew Deason if (ioctl(sock, SIOCGIFHWADDR, &ifr) == -1) { 2896aec0730eSAndrew Deason /* 2897aec0730eSAndrew Deason * We can't get the hw addr of this interface, but that's not a 2898aec0730eSAndrew Deason * fatal error. Don't set info->hardware_address, but keep 2899aec0730eSAndrew Deason * going. 2900aec0730eSAndrew Deason */ 2901aec0730eSAndrew Deason if (errno == EADDRNOTAVAIL) { 2902aec0730eSAndrew Deason /* The interface doesn't have a hw addr (e.g. loopback). */ 2903aec0730eSAndrew Deason g_debug("failed to get MAC address of %s: %s", 2904aec0730eSAndrew Deason ifa->ifa_name, strerror(errno)); 2905aec0730eSAndrew Deason } else{ 2906aec0730eSAndrew Deason g_warning("failed to get MAC address of %s: %s", 2907aec0730eSAndrew Deason ifa->ifa_name, strerror(errno)); 290859e35c7bSAndrew Deason } 290959e35c7bSAndrew Deason 2910aec0730eSAndrew Deason } else { 291170335c46SAndrew Deason #ifdef CONFIG_SOLARIS 291270335c46SAndrew Deason mac_addr = (unsigned char *) &ifr.ifr_addr.sa_data; 291370335c46SAndrew Deason #else 291459e35c7bSAndrew Deason mac_addr = (unsigned char *) &ifr.ifr_hwaddr.sa_data; 291570335c46SAndrew Deason #endif 291659e35c7bSAndrew Deason info->hardware_address = 291759e35c7bSAndrew Deason g_strdup_printf("%02x:%02x:%02x:%02x:%02x:%02x", 291859e35c7bSAndrew Deason (int) mac_addr[0], (int) mac_addr[1], 291959e35c7bSAndrew Deason (int) mac_addr[2], (int) mac_addr[3], 292059e35c7bSAndrew Deason (int) mac_addr[4], (int) mac_addr[5]); 292159e35c7bSAndrew Deason 292259e35c7bSAndrew Deason info->has_hardware_address = true; 292359e35c7bSAndrew Deason } 2924aec0730eSAndrew Deason close(sock); 2925aec0730eSAndrew Deason } 292659e35c7bSAndrew Deason 292759e35c7bSAndrew Deason if (ifa->ifa_addr && 292859e35c7bSAndrew Deason ifa->ifa_addr->sa_family == AF_INET) { 292959e35c7bSAndrew Deason /* interface with IPv4 address */ 293059e35c7bSAndrew Deason p = &((struct sockaddr_in *)ifa->ifa_addr)->sin_addr; 293159e35c7bSAndrew Deason if (!inet_ntop(AF_INET, p, addr4, sizeof(addr4))) { 293259e35c7bSAndrew Deason error_setg_errno(errp, errno, "inet_ntop failed"); 293359e35c7bSAndrew Deason goto error; 293459e35c7bSAndrew Deason } 293559e35c7bSAndrew Deason 293659e35c7bSAndrew Deason address_item = g_malloc0(sizeof(*address_item)); 293759e35c7bSAndrew Deason address_item->ip_address = g_strdup(addr4); 293859e35c7bSAndrew Deason address_item->ip_address_type = GUEST_IP_ADDRESS_TYPE_IPV4; 293959e35c7bSAndrew Deason 294059e35c7bSAndrew Deason if (ifa->ifa_netmask) { 294159e35c7bSAndrew Deason /* Count the number of set bits in netmask. 294259e35c7bSAndrew Deason * This is safe as '1' and '0' cannot be shuffled in netmask. */ 294359e35c7bSAndrew Deason p = &((struct sockaddr_in *)ifa->ifa_netmask)->sin_addr; 294459e35c7bSAndrew Deason address_item->prefix = ctpop32(((uint32_t *) p)[0]); 294559e35c7bSAndrew Deason } 294659e35c7bSAndrew Deason } else if (ifa->ifa_addr && 294759e35c7bSAndrew Deason ifa->ifa_addr->sa_family == AF_INET6) { 294859e35c7bSAndrew Deason /* interface with IPv6 address */ 294959e35c7bSAndrew Deason p = &((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_addr; 295059e35c7bSAndrew Deason if (!inet_ntop(AF_INET6, p, addr6, sizeof(addr6))) { 295159e35c7bSAndrew Deason error_setg_errno(errp, errno, "inet_ntop failed"); 295259e35c7bSAndrew Deason goto error; 295359e35c7bSAndrew Deason } 295459e35c7bSAndrew Deason 295559e35c7bSAndrew Deason address_item = g_malloc0(sizeof(*address_item)); 295659e35c7bSAndrew Deason address_item->ip_address = g_strdup(addr6); 295759e35c7bSAndrew Deason address_item->ip_address_type = GUEST_IP_ADDRESS_TYPE_IPV6; 295859e35c7bSAndrew Deason 295959e35c7bSAndrew Deason if (ifa->ifa_netmask) { 296059e35c7bSAndrew Deason /* Count the number of set bits in netmask. 296159e35c7bSAndrew Deason * This is safe as '1' and '0' cannot be shuffled in netmask. */ 296259e35c7bSAndrew Deason p = &((struct sockaddr_in6 *)ifa->ifa_netmask)->sin6_addr; 296359e35c7bSAndrew Deason address_item->prefix = 296459e35c7bSAndrew Deason ctpop32(((uint32_t *) p)[0]) + 296559e35c7bSAndrew Deason ctpop32(((uint32_t *) p)[1]) + 296659e35c7bSAndrew Deason ctpop32(((uint32_t *) p)[2]) + 296759e35c7bSAndrew Deason ctpop32(((uint32_t *) p)[3]); 296859e35c7bSAndrew Deason } 296959e35c7bSAndrew Deason } 297059e35c7bSAndrew Deason 297159e35c7bSAndrew Deason if (!address_item) { 297259e35c7bSAndrew Deason continue; 297359e35c7bSAndrew Deason } 297459e35c7bSAndrew Deason 297559e35c7bSAndrew Deason address_tail = &info->ip_addresses; 297659e35c7bSAndrew Deason while (*address_tail) { 297759e35c7bSAndrew Deason address_tail = &(*address_tail)->next; 297859e35c7bSAndrew Deason } 297959e35c7bSAndrew Deason QAPI_LIST_APPEND(address_tail, address_item); 298059e35c7bSAndrew Deason 298159e35c7bSAndrew Deason info->has_ip_addresses = true; 298259e35c7bSAndrew Deason 298359e35c7bSAndrew Deason if (!info->has_statistics) { 298459e35c7bSAndrew Deason interface_stat = g_malloc0(sizeof(*interface_stat)); 298559e35c7bSAndrew Deason if (guest_get_network_stats(info->name, interface_stat) == -1) { 298659e35c7bSAndrew Deason info->has_statistics = false; 298759e35c7bSAndrew Deason g_free(interface_stat); 298859e35c7bSAndrew Deason } else { 298959e35c7bSAndrew Deason info->statistics = interface_stat; 299059e35c7bSAndrew Deason info->has_statistics = true; 299159e35c7bSAndrew Deason } 299259e35c7bSAndrew Deason } 299359e35c7bSAndrew Deason } 299459e35c7bSAndrew Deason 299559e35c7bSAndrew Deason freeifaddrs(ifap); 299659e35c7bSAndrew Deason return head; 299759e35c7bSAndrew Deason 299859e35c7bSAndrew Deason error: 299959e35c7bSAndrew Deason freeifaddrs(ifap); 300059e35c7bSAndrew Deason qapi_free_GuestNetworkInterfaceList(head); 300159e35c7bSAndrew Deason return NULL; 300259e35c7bSAndrew Deason } 300359e35c7bSAndrew Deason 300459e35c7bSAndrew Deason #else 300559e35c7bSAndrew Deason 300659e35c7bSAndrew Deason GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp) 300759e35c7bSAndrew Deason { 300859e35c7bSAndrew Deason error_setg(errp, QERR_UNSUPPORTED); 300959e35c7bSAndrew Deason return NULL; 301059e35c7bSAndrew Deason } 301159e35c7bSAndrew Deason 301259e35c7bSAndrew Deason #endif /* HAVE_GETIFADDRS */ 301359e35c7bSAndrew Deason 3014d35d4cb5SMichael Roth #if !defined(CONFIG_FSFREEZE) 3015d35d4cb5SMichael Roth 301646d4c572STomoki Sekiyama GuestFilesystemInfoList *qmp_guest_get_fsinfo(Error **errp) 301746d4c572STomoki Sekiyama { 3018c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 301946d4c572STomoki Sekiyama return NULL; 302046d4c572STomoki Sekiyama } 302146d4c572STomoki Sekiyama 302277dbc81bSMarkus Armbruster GuestFsfreezeStatus qmp_guest_fsfreeze_status(Error **errp) 3023d35d4cb5SMichael Roth { 3024c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 3025d35d4cb5SMichael Roth 3026d35d4cb5SMichael Roth return 0; 3027d35d4cb5SMichael Roth } 3028d35d4cb5SMichael Roth 302977dbc81bSMarkus Armbruster int64_t qmp_guest_fsfreeze_freeze(Error **errp) 3030d35d4cb5SMichael Roth { 3031c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 3032d35d4cb5SMichael Roth 3033d35d4cb5SMichael Roth return 0; 3034d35d4cb5SMichael Roth } 3035d35d4cb5SMichael Roth 3036e99bce20STomoki Sekiyama int64_t qmp_guest_fsfreeze_freeze_list(bool has_mountpoints, 3037e99bce20STomoki Sekiyama strList *mountpoints, 3038e99bce20STomoki Sekiyama Error **errp) 3039e99bce20STomoki Sekiyama { 3040c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 3041e99bce20STomoki Sekiyama 3042e99bce20STomoki Sekiyama return 0; 3043e99bce20STomoki Sekiyama } 3044e99bce20STomoki Sekiyama 304577dbc81bSMarkus Armbruster int64_t qmp_guest_fsfreeze_thaw(Error **errp) 3046d35d4cb5SMichael Roth { 3047c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 3048d35d4cb5SMichael Roth 3049d35d4cb5SMichael Roth return 0; 3050d35d4cb5SMichael Roth } 3051fed39564STomáš Golembiovský 3052fed39564STomáš Golembiovský GuestDiskInfoList *qmp_guest_get_disks(Error **errp) 3053fed39564STomáš Golembiovský { 3054fed39564STomáš Golembiovský error_setg(errp, QERR_UNSUPPORTED); 3055fed39564STomáš Golembiovský return NULL; 3056fed39564STomáš Golembiovský } 3057fed39564STomáš Golembiovský 3058eab5fd59SPaolo Bonzini #endif /* CONFIG_FSFREEZE */ 3059d35d4cb5SMichael Roth 3060eab5fd59SPaolo Bonzini #if !defined(CONFIG_FSTRIM) 3061e82855d9SJustin Ossevoort GuestFilesystemTrimResponse * 3062e82855d9SJustin Ossevoort qmp_guest_fstrim(bool has_minimum, int64_t minimum, Error **errp) 3063eab5fd59SPaolo Bonzini { 3064c6bd8c70SMarkus Armbruster error_setg(errp, QERR_UNSUPPORTED); 3065e82855d9SJustin Ossevoort return NULL; 3066eab5fd59SPaolo Bonzini } 3067d35d4cb5SMichael Roth #endif 3068d35d4cb5SMichael Roth 30691281c08aSTomoki Sekiyama /* add unsupported commands to the blacklist */ 30701281c08aSTomoki Sekiyama GList *ga_command_blacklist_init(GList *blacklist) 30711281c08aSTomoki Sekiyama { 30721281c08aSTomoki Sekiyama #if !defined(__linux__) 30731281c08aSTomoki Sekiyama { 30741281c08aSTomoki Sekiyama const char *list[] = { 30751281c08aSTomoki Sekiyama "guest-suspend-disk", "guest-suspend-ram", 307659e35c7bSAndrew Deason "guest-suspend-hybrid", "guest-get-vcpus", "guest-set-vcpus", 30770dd38a03Szhanghailiang "guest-get-memory-blocks", "guest-set-memory-blocks", 307828d8dd35SBasil Salman "guest-get-memory-block-size", "guest-get-memory-block-info", 307928d8dd35SBasil Salman NULL}; 30801281c08aSTomoki Sekiyama char **p = (char **)list; 30811281c08aSTomoki Sekiyama 30821281c08aSTomoki Sekiyama while (*p) { 30834bca81ceSMarc-André Lureau blacklist = g_list_append(blacklist, g_strdup(*p++)); 30841281c08aSTomoki Sekiyama } 30851281c08aSTomoki Sekiyama } 30861281c08aSTomoki Sekiyama #endif 30871281c08aSTomoki Sekiyama 308859e35c7bSAndrew Deason #if !defined(HAVE_GETIFADDRS) 308959e35c7bSAndrew Deason blacklist = g_list_append(blacklist, 309059e35c7bSAndrew Deason g_strdup("guest-network-get-interfaces")); 309159e35c7bSAndrew Deason #endif 309259e35c7bSAndrew Deason 30931281c08aSTomoki Sekiyama #if !defined(CONFIG_FSFREEZE) 30941281c08aSTomoki Sekiyama { 30951281c08aSTomoki Sekiyama const char *list[] = { 30961281c08aSTomoki Sekiyama "guest-get-fsinfo", "guest-fsfreeze-status", 30971281c08aSTomoki Sekiyama "guest-fsfreeze-freeze", "guest-fsfreeze-freeze-list", 3098fed39564STomáš Golembiovský "guest-fsfreeze-thaw", "guest-get-fsinfo", 3099fed39564STomáš Golembiovský "guest-get-disks", NULL}; 31001281c08aSTomoki Sekiyama char **p = (char **)list; 31011281c08aSTomoki Sekiyama 31021281c08aSTomoki Sekiyama while (*p) { 31034bca81ceSMarc-André Lureau blacklist = g_list_append(blacklist, g_strdup(*p++)); 31041281c08aSTomoki Sekiyama } 31051281c08aSTomoki Sekiyama } 31061281c08aSTomoki Sekiyama #endif 31071281c08aSTomoki Sekiyama 31081281c08aSTomoki Sekiyama #if !defined(CONFIG_FSTRIM) 31094bca81ceSMarc-André Lureau blacklist = g_list_append(blacklist, g_strdup("guest-fstrim")); 31101281c08aSTomoki Sekiyama #endif 31111281c08aSTomoki Sekiyama 31122e4211ceSTomáš Golembiovský blacklist = g_list_append(blacklist, g_strdup("guest-get-devices")); 31132e4211ceSTomáš Golembiovský 31141281c08aSTomoki Sekiyama return blacklist; 31151281c08aSTomoki Sekiyama } 31161281c08aSTomoki Sekiyama 3117c216e5adSMichael Roth /* register init/cleanup routines for stateful command groups */ 3118c216e5adSMichael Roth void ga_command_state_init(GAState *s, GACommandState *cs) 3119c216e5adSMichael Roth { 3120c216e5adSMichael Roth #if defined(CONFIG_FSFREEZE) 3121f22d85e9SMichael Roth ga_command_state_add(cs, NULL, guest_fsfreeze_cleanup); 3122c216e5adSMichael Roth #endif 3123c216e5adSMichael Roth } 3124161a56a9SVinzenz Feenstra 3125e674605fSTomáš Golembiovský #ifdef HAVE_UTMPX 3126e674605fSTomáš Golembiovský 3127161a56a9SVinzenz Feenstra #define QGA_MICRO_SECOND_TO_SECOND 1000000 3128161a56a9SVinzenz Feenstra 3129161a56a9SVinzenz Feenstra static double ga_get_login_time(struct utmpx *user_info) 3130161a56a9SVinzenz Feenstra { 3131161a56a9SVinzenz Feenstra double seconds = (double)user_info->ut_tv.tv_sec; 3132161a56a9SVinzenz Feenstra double useconds = (double)user_info->ut_tv.tv_usec; 3133161a56a9SVinzenz Feenstra useconds /= QGA_MICRO_SECOND_TO_SECOND; 3134161a56a9SVinzenz Feenstra return seconds + useconds; 3135161a56a9SVinzenz Feenstra } 3136161a56a9SVinzenz Feenstra 3137b90abbacSVladimir Sementsov-Ogievskiy GuestUserList *qmp_guest_get_users(Error **errp) 3138161a56a9SVinzenz Feenstra { 3139161a56a9SVinzenz Feenstra GHashTable *cache = NULL; 314095b3a8c8SEric Blake GuestUserList *head = NULL, **tail = &head; 3141161a56a9SVinzenz Feenstra struct utmpx *user_info = NULL; 3142161a56a9SVinzenz Feenstra gpointer value = NULL; 3143161a56a9SVinzenz Feenstra GuestUser *user = NULL; 3144161a56a9SVinzenz Feenstra double login_time = 0; 3145161a56a9SVinzenz Feenstra 3146161a56a9SVinzenz Feenstra cache = g_hash_table_new(g_str_hash, g_str_equal); 3147161a56a9SVinzenz Feenstra setutxent(); 3148161a56a9SVinzenz Feenstra 3149161a56a9SVinzenz Feenstra for (;;) { 3150161a56a9SVinzenz Feenstra user_info = getutxent(); 3151161a56a9SVinzenz Feenstra if (user_info == NULL) { 3152161a56a9SVinzenz Feenstra break; 3153161a56a9SVinzenz Feenstra } else if (user_info->ut_type != USER_PROCESS) { 3154161a56a9SVinzenz Feenstra continue; 3155161a56a9SVinzenz Feenstra } else if (g_hash_table_contains(cache, user_info->ut_user)) { 3156161a56a9SVinzenz Feenstra value = g_hash_table_lookup(cache, user_info->ut_user); 3157161a56a9SVinzenz Feenstra user = (GuestUser *)value; 3158161a56a9SVinzenz Feenstra login_time = ga_get_login_time(user_info); 3159161a56a9SVinzenz Feenstra /* We're ensuring the earliest login time to be sent */ 3160161a56a9SVinzenz Feenstra if (login_time < user->login_time) { 3161161a56a9SVinzenz Feenstra user->login_time = login_time; 3162161a56a9SVinzenz Feenstra } 3163161a56a9SVinzenz Feenstra continue; 3164161a56a9SVinzenz Feenstra } 3165161a56a9SVinzenz Feenstra 316695b3a8c8SEric Blake user = g_new0(GuestUser, 1); 316795b3a8c8SEric Blake user->user = g_strdup(user_info->ut_user); 316895b3a8c8SEric Blake user->login_time = ga_get_login_time(user_info); 3169161a56a9SVinzenz Feenstra 317095b3a8c8SEric Blake g_hash_table_insert(cache, user->user, user); 3171161a56a9SVinzenz Feenstra 317295b3a8c8SEric Blake QAPI_LIST_APPEND(tail, user); 3173161a56a9SVinzenz Feenstra } 3174161a56a9SVinzenz Feenstra endutxent(); 3175161a56a9SVinzenz Feenstra g_hash_table_destroy(cache); 3176161a56a9SVinzenz Feenstra return head; 3177161a56a9SVinzenz Feenstra } 3178e674605fSTomáš Golembiovský 3179e674605fSTomáš Golembiovský #else 3180e674605fSTomáš Golembiovský 3181e674605fSTomáš Golembiovský GuestUserList *qmp_guest_get_users(Error **errp) 3182e674605fSTomáš Golembiovský { 3183e674605fSTomáš Golembiovský error_setg(errp, QERR_UNSUPPORTED); 3184e674605fSTomáš Golembiovský return NULL; 3185e674605fSTomáš Golembiovský } 3186e674605fSTomáš Golembiovský 3187e674605fSTomáš Golembiovský #endif 31889848f797STomáš Golembiovský 31899848f797STomáš Golembiovský /* Replace escaped special characters with theire real values. The replacement 31909848f797STomáš Golembiovský * is done in place -- returned value is in the original string. 31919848f797STomáš Golembiovský */ 31929848f797STomáš Golembiovský static void ga_osrelease_replace_special(gchar *value) 31939848f797STomáš Golembiovský { 31949848f797STomáš Golembiovský gchar *p, *p2, quote; 31959848f797STomáš Golembiovský 31969848f797STomáš Golembiovský /* Trim the string at first space or semicolon if it is not enclosed in 31979848f797STomáš Golembiovský * single or double quotes. */ 31989848f797STomáš Golembiovský if ((value[0] != '"') || (value[0] == '\'')) { 31999848f797STomáš Golembiovský p = strchr(value, ' '); 32009848f797STomáš Golembiovský if (p != NULL) { 32019848f797STomáš Golembiovský *p = 0; 32029848f797STomáš Golembiovský } 32039848f797STomáš Golembiovský p = strchr(value, ';'); 32049848f797STomáš Golembiovský if (p != NULL) { 32059848f797STomáš Golembiovský *p = 0; 32069848f797STomáš Golembiovský } 32079848f797STomáš Golembiovský return; 32089848f797STomáš Golembiovský } 32099848f797STomáš Golembiovský 32109848f797STomáš Golembiovský quote = value[0]; 32119848f797STomáš Golembiovský p2 = value; 32129848f797STomáš Golembiovský p = value + 1; 32139848f797STomáš Golembiovský while (*p != 0) { 32149848f797STomáš Golembiovský if (*p == '\\') { 32159848f797STomáš Golembiovský p++; 32169848f797STomáš Golembiovský switch (*p) { 32179848f797STomáš Golembiovský case '$': 32189848f797STomáš Golembiovský case '\'': 32199848f797STomáš Golembiovský case '"': 32209848f797STomáš Golembiovský case '\\': 32219848f797STomáš Golembiovský case '`': 32229848f797STomáš Golembiovský break; 32239848f797STomáš Golembiovský default: 32249848f797STomáš Golembiovský /* Keep literal backslash followed by whatever is there */ 32259848f797STomáš Golembiovský p--; 32269848f797STomáš Golembiovský break; 32279848f797STomáš Golembiovský } 32289848f797STomáš Golembiovský } else if (*p == quote) { 32299848f797STomáš Golembiovský *p2 = 0; 32309848f797STomáš Golembiovský break; 32319848f797STomáš Golembiovský } 32329848f797STomáš Golembiovský *(p2++) = *(p++); 32339848f797STomáš Golembiovský } 32349848f797STomáš Golembiovský } 32359848f797STomáš Golembiovský 32369848f797STomáš Golembiovský static GKeyFile *ga_parse_osrelease(const char *fname) 32379848f797STomáš Golembiovský { 32389848f797STomáš Golembiovský gchar *content = NULL; 32399848f797STomáš Golembiovský gchar *content2 = NULL; 32409848f797STomáš Golembiovský GError *err = NULL; 32419848f797STomáš Golembiovský GKeyFile *keys = g_key_file_new(); 32429848f797STomáš Golembiovský const char *group = "[os-release]\n"; 32439848f797STomáš Golembiovský 32449848f797STomáš Golembiovský if (!g_file_get_contents(fname, &content, NULL, &err)) { 32459848f797STomáš Golembiovský slog("failed to read '%s', error: %s", fname, err->message); 32469848f797STomáš Golembiovský goto fail; 32479848f797STomáš Golembiovský } 32489848f797STomáš Golembiovský 32499848f797STomáš Golembiovský if (!g_utf8_validate(content, -1, NULL)) { 32509848f797STomáš Golembiovský slog("file is not utf-8 encoded: %s", fname); 32519848f797STomáš Golembiovský goto fail; 32529848f797STomáš Golembiovský } 32539848f797STomáš Golembiovský content2 = g_strdup_printf("%s%s", group, content); 32549848f797STomáš Golembiovský 32559848f797STomáš Golembiovský if (!g_key_file_load_from_data(keys, content2, -1, G_KEY_FILE_NONE, 32569848f797STomáš Golembiovský &err)) { 32579848f797STomáš Golembiovský slog("failed to parse file '%s', error: %s", fname, err->message); 32589848f797STomáš Golembiovský goto fail; 32599848f797STomáš Golembiovský } 32609848f797STomáš Golembiovský 32619848f797STomáš Golembiovský g_free(content); 32629848f797STomáš Golembiovský g_free(content2); 32639848f797STomáš Golembiovský return keys; 32649848f797STomáš Golembiovský 32659848f797STomáš Golembiovský fail: 32669848f797STomáš Golembiovský g_error_free(err); 32679848f797STomáš Golembiovský g_free(content); 32689848f797STomáš Golembiovský g_free(content2); 32699848f797STomáš Golembiovský g_key_file_free(keys); 32709848f797STomáš Golembiovský return NULL; 32719848f797STomáš Golembiovský } 32729848f797STomáš Golembiovský 32739848f797STomáš Golembiovský GuestOSInfo *qmp_guest_get_osinfo(Error **errp) 32749848f797STomáš Golembiovský { 32759848f797STomáš Golembiovský GuestOSInfo *info = NULL; 32769848f797STomáš Golembiovský struct utsname kinfo; 3277339ca68bSTomáš Golembiovský GKeyFile *osrelease = NULL; 3278339ca68bSTomáš Golembiovský const char *qga_os_release = g_getenv("QGA_OS_RELEASE"); 32799848f797STomáš Golembiovský 32809848f797STomáš Golembiovský info = g_new0(GuestOSInfo, 1); 32819848f797STomáš Golembiovský 32829848f797STomáš Golembiovský if (uname(&kinfo) != 0) { 32839848f797STomáš Golembiovský error_setg_errno(errp, errno, "uname failed"); 32849848f797STomáš Golembiovský } else { 32859848f797STomáš Golembiovský info->has_kernel_version = true; 32869848f797STomáš Golembiovský info->kernel_version = g_strdup(kinfo.version); 32879848f797STomáš Golembiovský info->has_kernel_release = true; 32889848f797STomáš Golembiovský info->kernel_release = g_strdup(kinfo.release); 32899848f797STomáš Golembiovský info->has_machine = true; 32909848f797STomáš Golembiovský info->machine = g_strdup(kinfo.machine); 32919848f797STomáš Golembiovský } 32929848f797STomáš Golembiovský 3293339ca68bSTomáš Golembiovský if (qga_os_release != NULL) { 3294339ca68bSTomáš Golembiovský osrelease = ga_parse_osrelease(qga_os_release); 3295339ca68bSTomáš Golembiovský } else { 32969848f797STomáš Golembiovský osrelease = ga_parse_osrelease("/etc/os-release"); 32979848f797STomáš Golembiovský if (osrelease == NULL) { 32989848f797STomáš Golembiovský osrelease = ga_parse_osrelease("/usr/lib/os-release"); 32999848f797STomáš Golembiovský } 3300339ca68bSTomáš Golembiovský } 33019848f797STomáš Golembiovský 33029848f797STomáš Golembiovský if (osrelease != NULL) { 33039848f797STomáš Golembiovský char *value; 33049848f797STomáš Golembiovský 33059848f797STomáš Golembiovský #define GET_FIELD(field, osfield) do { \ 33069848f797STomáš Golembiovský value = g_key_file_get_value(osrelease, "os-release", osfield, NULL); \ 33079848f797STomáš Golembiovský if (value != NULL) { \ 33089848f797STomáš Golembiovský ga_osrelease_replace_special(value); \ 33099848f797STomáš Golembiovský info->has_ ## field = true; \ 33109848f797STomáš Golembiovský info->field = value; \ 33119848f797STomáš Golembiovský } \ 33129848f797STomáš Golembiovský } while (0) 33139848f797STomáš Golembiovský GET_FIELD(id, "ID"); 33149848f797STomáš Golembiovský GET_FIELD(name, "NAME"); 33159848f797STomáš Golembiovský GET_FIELD(pretty_name, "PRETTY_NAME"); 33169848f797STomáš Golembiovský GET_FIELD(version, "VERSION"); 33179848f797STomáš Golembiovský GET_FIELD(version_id, "VERSION_ID"); 33189848f797STomáš Golembiovský GET_FIELD(variant, "VARIANT"); 33199848f797STomáš Golembiovský GET_FIELD(variant_id, "VARIANT_ID"); 33209848f797STomáš Golembiovský #undef GET_FIELD 33219848f797STomáš Golembiovský 33229848f797STomáš Golembiovský g_key_file_free(osrelease); 33239848f797STomáš Golembiovský } 33249848f797STomáš Golembiovský 33259848f797STomáš Golembiovský return info; 33269848f797STomáš Golembiovský } 33272e4211ceSTomáš Golembiovský 33282e4211ceSTomáš Golembiovský GuestDeviceInfoList *qmp_guest_get_devices(Error **errp) 33292e4211ceSTomáš Golembiovský { 33302e4211ceSTomáš Golembiovský error_setg(errp, QERR_UNSUPPORTED); 33312e4211ceSTomáš Golembiovský 33322e4211ceSTomáš Golembiovský return NULL; 33332e4211ceSTomáš Golembiovský } 3334548fb0daSMarc-André Lureau 3335548fb0daSMarc-André Lureau #ifndef HOST_NAME_MAX 3336548fb0daSMarc-André Lureau # ifdef _POSIX_HOST_NAME_MAX 3337548fb0daSMarc-André Lureau # define HOST_NAME_MAX _POSIX_HOST_NAME_MAX 3338548fb0daSMarc-André Lureau # else 3339548fb0daSMarc-André Lureau # define HOST_NAME_MAX 255 3340548fb0daSMarc-André Lureau # endif 3341548fb0daSMarc-André Lureau #endif 3342548fb0daSMarc-André Lureau 3343548fb0daSMarc-André Lureau char *qga_get_host_name(Error **errp) 3344548fb0daSMarc-André Lureau { 3345548fb0daSMarc-André Lureau long len = -1; 3346548fb0daSMarc-André Lureau g_autofree char *hostname = NULL; 3347548fb0daSMarc-André Lureau 3348548fb0daSMarc-André Lureau #ifdef _SC_HOST_NAME_MAX 3349548fb0daSMarc-André Lureau len = sysconf(_SC_HOST_NAME_MAX); 3350548fb0daSMarc-André Lureau #endif /* _SC_HOST_NAME_MAX */ 3351548fb0daSMarc-André Lureau 3352548fb0daSMarc-André Lureau if (len < 0) { 3353548fb0daSMarc-André Lureau len = HOST_NAME_MAX; 3354548fb0daSMarc-André Lureau } 3355548fb0daSMarc-André Lureau 3356548fb0daSMarc-André Lureau /* Unfortunately, gethostname() below does not guarantee a 3357548fb0daSMarc-André Lureau * NULL terminated string. Therefore, allocate one byte more 3358548fb0daSMarc-André Lureau * to be sure. */ 3359548fb0daSMarc-André Lureau hostname = g_new0(char, len + 1); 3360548fb0daSMarc-André Lureau 3361548fb0daSMarc-André Lureau if (gethostname(hostname, len) < 0) { 3362548fb0daSMarc-André Lureau error_setg_errno(errp, errno, 3363548fb0daSMarc-André Lureau "cannot get hostname"); 3364548fb0daSMarc-André Lureau return NULL; 3365548fb0daSMarc-André Lureau } 3366548fb0daSMarc-André Lureau 3367548fb0daSMarc-André Lureau return g_steal_pointer(&hostname); 3368548fb0daSMarc-André Lureau } 3369